updated .drone.yml

Reviewed-on: #1

.drone.yml

@@ -1,118 +1,109 @@
 ---
 kind: pipeline
 type: docker
-name: cleanup-before
+name: build-linux-amd64
 
-steps:
+platform:
-  - name: clean
+  os: linux
-    image: alpine
+  arch: amd64
-    commands:
-      - rm -rf /build/*
-    volumes:
-      - name: build
-        path: /build
-    when:
-      event: tag
-
-volumes:
-  - name: build
-    host:
-      path: /tmp/qrz/build
-
----
-kind: pipeline
-type: docker
-name: default-linux-amd64
 
 steps:
   - name: build
-    image: golang
+    image: golang:1.23
     commands:
-      - ./ci-build.sh build
+      - go build -o $PROJECTNAME $GOOPTIONS $SRCFILES
     environment:
+      CGO_ENABLED: 1
       GOOS: linux
       GOARCH: amd64
-    volumes:
+      GOOPTIONS: -mod=vendor
-      - name: build
+      SRCFILES: cmd/qrz/*.go
-        path: /build
+      PROJECTNAME: qrz
-
-volumes:
-  - name: build
-    host:
-      path: /tmp/qrz/build
-
-depends_on:
-  - cleanup-before
-
----
-kind: pipeline
-type: docker
-name: gitea-release
-
-steps:
-  - name: move
-    image: alpine
-    commands:
-      - mv build/* ./
-    volumes:
-      - name: build
-        path: /drone/src/build
     when:
-      event: tag
+      event:
+        exclude:
+          - tag
+
   - name: release
+    image: golang:1.23
+    commands:
+      - go build -o $PROJECTNAME $GOOPTIONS $SRCFILES
+      - tar -czvf $PROJECTNAME-$DRONE_TAG-$GOOS-$GOARCH.tar.gz $PROJECTNAME
+      - echo $PROJECTNAME $DRONE_TAG > VERSION
+    environment:
+      CGO_ENABLED: 1
+      GOOS: linux
+      GOARCH: amd64
+      GOOPTIONS: -mod=vendor
+      SRCFILES: cmd/qrz/*.go
+      PROJECTNAME: qrz
+    when:
+      event:
+        - tag
+
+  - name: publish
     image: plugins/gitea-release
     settings:
       base_url: https://git.paulbsd.com
       api_key:
         from_secret: gitea_token
       files: "*.tar.gz"
-      checksum:
-        - sha256
-        - sha512
       title: VERSION
-    volumes:
-      - name: build
-        path: /drone/src/build
     when:
-      event: tag
+      event:
-  - name: ls
+        - tag
-    image: alpine
-    commands:
-      - find .
-    volumes:
-      - name: build
-        path: /drone/src/build
-    when:
-      event: tag
-
-volumes:
-  - name: build
-    host:
-      path: /tmp/qrz/build
-
-depends_on:
-  - default-linux-amd64
 
 ---
 kind: pipeline
 type: docker
-name: cleanup-after
+name: build-linux-arm64
+
+platform:
+  os: linux
+  arch: arm64
 
 steps:
-  - name: clean
-    image: alpine
-    commands:
-      - rm -rf /build/*
-    volumes:
-      - name: build
-        path: /build
-    when:
-      event: tag
-
-volumes:
   - name: build
-    host:
+    image: golang:1.23
-      path: /tmp/qrz/build
+    commands:
+      - go build -o $PROJECTNAME $GOOPTIONS $SRCFILES
+    environment:
+      CGO_ENABLED: 1
+      GOOS: linux
+      GOARCH: arm64
+      GOOPTIONS: -mod=vendor
+      SRCFILES: cmd/qrz/*.go
+      PROJECTNAME: qrz
+    when:
+      event:
+        exclude:
+          - tag
 
-depends_on:
+  - name: release
-  - gitea-release
+    image: golang:1.23
+    commands:
+      - go build -o $PROJECTNAME $GOOPTIONS $SRCFILES
+      - tar -czvf $PROJECTNAME-$DRONE_TAG-$GOOS-$GOARCH.tar.gz $PROJECTNAME
+      - echo $PROJECTNAME $DRONE_TAG > VERSION
+    environment:
+      CGO_ENABLED: 1
+      GOOS: linux
+      GOARCH: arm64
+      GOOPTIONS: -mod=vendor
+      SRCFILES: cmd/qrz/*.go
+      PROJECTNAME: qrz
+    when:
+      event:
+        - tag
+
+  - name: publish
+    image: plugins/gitea-release
+    settings:
+      base_url: https://git.paulbsd.com
+      api_key:
+        from_secret: gitea_token
+      files: "*.tar.gz"
+      title: VERSION
+    when:
+      event:
+        - tag

.gitignore

@@ -3,7 +3,5 @@
 *.swp
 /*.tar.gz
 /dist
-/packr2
-/packrd
 /qrz
-/main-packr
+/db

Makefile

@@ -1,18 +0,0 @@
-# qrz Makefile
-
-GOCMD=go
-GOBUILDCMD=${GOCMD} build
-GOOPTIONS=-mod=vendor -ldflags="-s -w"
-
-RMCMD=rm
-BINNAME=qrz
-
-SRCFILES=cmd/qrz/*.go
-
-all: build
-
-build:
-	${GOBUILDCMD} ${GOOPTIONS} ${SRCFILES}
-
-clean:
-	${RMCMD} -f ${BINNAME}

README.md

@@ -35,7 +35,7 @@ cron="@every 1h"
 ## License
 
 ```text
-Copyright (c) 2020, 2021 PaulBSD
+Copyright (c) 2020, 2021, 2022 PaulBSD
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

ci-build.sh

@@ -1,66 +0,0 @@
-#!/bin/bash
-
-set -e
-
-PROJECTNAME=qrz
-RELEASENAME=${PROJECTNAME}
-VERSION="0"
-
-GOOPTIONS="-mod=vendor"
-SRCFILES=cmd/${PROJECTNAME}/*.go
-
-build() {
-  echo "Begin of build"
-  if [[ ! -z ${DRONE_TAG} ]]
-  then
-    echo "Drone tag set, let's do a release"
-    VERSION=${DRONE_TAG}
-    echo "${PROJECTNAME} ${VERSION}" > /build/VERSION
-  else
-    echo "Drone not set, let's only do a build"
-    VERSION=${DRONE_COMMIT}
-  fi
-
-  if [[ ! -z ${VERSION} && ! -z ${GOOS} && ! -z ${GOARCH} ]]
-  then
-    echo "Let's set a release name"
-    RELEASENAME=${PROJECTNAME}-${VERSION}-${GOOS}-${GOARCH}
-  fi
-
-  echo "Building project"
-  go generate ${SRCFILES}
-  go build -o ${PROJECTNAME} ${GOOPTIONS} ${SRCFILES}
-  
-  if [[ ! -z ${DRONE_TAG} ]]
-  then
-    echo "Let's make archives"
-    mkdir -p /build
-    tar -czvf /build/${RELEASENAME}.tar.gz ${PROJECTNAME}
-  fi
-
-  echo "Removing binary file"
-  rm ${PROJECTNAME}
-
-  echo "End of build"
-}
-
-clean() {
-  rm -rf ${RELEASEDIR}
-  for i in ${PROJECTNAME} "cmd/${PROJECTNAME}/packrd" "cmd/${PROJECTNAME}/main-packr.go"
-  do
-    rm -rf ${i}
-  done
-}
-
-case $1 in
-  "build")
-    build
-  ;;
-  "clean")
-    clean
-  ;;
-  *)
-    echo "No options choosen"
-    exit 1
-  ;;
-esac

cmd/qrz/qrz.go

@@ -1,5 +1,3 @@
-//go:generate go run github.com/gobuffalo/packr/v2/packr2@latest -v
-
 package main
 
 import (
@@ -9,42 +7,36 @@ import (
 	"git.paulbsd.com/paulbsd/qrz/src/database"
 	"git.paulbsd.com/paulbsd/qrz/src/qrz"
 	"git.paulbsd.com/paulbsd/qrz/src/qrzws"
-	"github.com/gobuffalo/packr/v2"
+	_ "github.com/go-sql-driver/mysql"
-	_ "github.com/gobuffalo/packr/v2/file/resolver"
 	_ "github.com/lib/pq"
-	_ "github.com/spf13/cobra"
+	_ "github.com/mattn/go-sqlite3"
 )
 
 var version string
 
 func main() {
+	var err error
 	var cfg config.Config
 	cfg.GetConfig()
 
 	cfg.Version = version
 
-	// Generate static files embedding
+	// Initialize database
-	PackrGen()
+	err = database.Initialize(&cfg)
-
-	err := database.Initialize(&cfg)
 	if err != nil {
 		log.Fatalln(err)
 	}
 	defer cfg.Db.Close()
 
+	// Initialize qrz cron
 	err = qrz.InitCronConfig(cfg)
 	if err != nil {
 		log.Println(err)
 	}
 
+	// Run qrzws server
 	err = qrzws.RunServer(cfg)
 	if err != nil {
 		log.Println(err)
 	}
 }
-
-// PackrGen act as an assets bundle maker
-func PackrGen() {
-	packr.New("static", "../../static")
-	packr.New("templates", "../../templates")
-}

embed.go

@@ -0,0 +1,7 @@
+package embedded
+
+import "embed"
+
+//go:embed templates/*.html
+//go:embed static/**
+var Files embed.FS

go.mod

@@ -1,53 +1,39 @@
 module git.paulbsd.com/paulbsd/qrz
 
-go 1.17
+go 1.23
 
 require (
-	github.com/antchfx/htmlquery v1.2.3
+	github.com/antchfx/htmlquery v1.3.3
-	github.com/antchfx/xpath v1.2.0 // indirect
+	github.com/antchfx/xpath v1.3.2 // indirect
-	github.com/gobuffalo/here v0.6.2 // indirect
-	github.com/gobuffalo/packr/v2 v2.8.1
 	github.com/golang/snappy v0.0.4 // indirect
-	github.com/gopherjs/gopherjs v0.0.0-20210825203111-a709d8e111b3 // indirect
+	github.com/labstack/echo/v4 v4.12.0
-	github.com/karrick/godirwalk v1.16.1 // indirect
+	github.com/lib/pq v1.10.9
-	github.com/labstack/echo/v4 v4.5.0
+	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/lib/pq v1.10.2
+	github.com/mattn/go-sqlite3 v1.14.24
-	github.com/markbates/pkger v0.17.1
+	github.com/onsi/ginkgo v1.16.5 // indirect
-	github.com/mattn/go-colorable v0.1.8 // indirect
+	github.com/onsi/gomega v1.23.0 // indirect
-	github.com/mattn/go-sqlite3 v2.0.3+incompatible // indirect
-	github.com/onsi/ginkgo v1.16.4 // indirect
-	github.com/onsi/gomega v1.16.0 // indirect
 	github.com/robfig/cron v1.2.0
-	github.com/rogpeppe/go-internal v1.8.0 // indirect
+	golang.org/x/crypto v0.28.0 // indirect
-	github.com/sirupsen/logrus v1.8.1 // indirect
+	golang.org/x/net v0.30.0
-	github.com/smartystreets/assertions v1.2.0 // indirect
+	golang.org/x/sys v0.26.0 // indirect
-	github.com/spf13/cobra v1.2.1
+	golang.org/x/text v0.19.0 // indirect
-	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect
+	gopkg.in/ini.v1 v1.67.0
-	golang.org/x/net v0.0.0-20210825183410-e898025ed96a
+	xorm.io/builder v0.3.13 // indirect
-	golang.org/x/sys v0.0.0-20210823070655-63515b42dcdf // indirect
+	xorm.io/xorm v1.3.9
-	golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b // indirect
-	golang.org/x/text v0.3.7 // indirect
-	gopkg.in/ini.v1 v1.62.0
-	xorm.io/builder v0.3.9 // indirect
-	xorm.io/xorm v1.2.3
 )
 
+require github.com/go-sql-driver/mysql v1.8.1
+
 require (
-	github.com/gobuffalo/logger v1.0.4 // indirect
+	filippo.io/edwards25519 v1.1.0 // indirect
-	github.com/gobuffalo/packd v1.0.0 // indirect
+	github.com/goccy/go-json v0.10.3 // indirect
-	github.com/goccy/go-json v0.7.7 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/json-iterator/go v1.1.11 // indirect
+	github.com/labstack/gommon v0.4.2 // indirect
-	github.com/labstack/gommon v0.3.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/markbates/errx v1.1.0 // indirect
-	github.com/markbates/oncer v1.0.0 // indirect
-	github.com/markbates/safe v1.0.1 // indirect
-	github.com/mattn/go-isatty v0.0.13 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/syndtr/goleveldb v1.0.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	github.com/valyala/fasttemplate v1.2.1 // indirect
+	github.com/valyala/fasttemplate v1.2.2 // indirect
 )

src/config/main.go

@@ -13,12 +13,14 @@ func (config *Config) GetConfig() error {
 	var configfile string
 	var nofeed bool
 	var debug bool
+	var host string
 	var port int
 
 	flag.Usage = utils.Usage
 
 	flag.StringVar(&configfile, "configfile", "qrz.ini", "config file to use with qrz section")
-	flag.IntVar(&port, "port", 8080, "http port to use")
+	flag.StringVar(&host, "host", "[::]", "http host to bind to")
+	flag.IntVar(&port, "port", 8087, "http port to use")
 	flag.BoolVar(&nofeed, "nofeed", false, "do not feed table with entries at first launch")
 	flag.BoolVar(&debug, "debug", false, "enable debug")
 	flag.Parse()
@@ -30,6 +32,7 @@ func (config *Config) GetConfig() error {
 
 	qrzsection := cfg.Section("qrz")
 
+	config.Host = host
 	config.Port = port
 	config.NoFeed = nofeed
 	config.Debug = debug
@@ -40,8 +43,8 @@ func (config *Config) GetConfig() error {
 	config.DbPassword = qrzsection.Key("db_password").MustString("password")
 	config.Cron = qrzsection.Key("cron").MustString("@every 1h")
 
-	config.URLBase = `http://groupe-frs.hamstation.eu/index_qrz_liste_%s.php`
+	config.URLBase = `https://groupe-frs.hamstation.eu/index_qrz_liste_%s.php`
-	config.URLBaseForGroups = "http://groupe-frs.hamstation.eu/bdd/menu_listing_division.php"
+	config.URLBaseForGroups = "https://groupe-frs.hamstation.eu/bdd/menu_listing_division.php"
 
 	config.QrzGroups = []string{}
 
@@ -60,6 +63,7 @@ type Config struct {
 	URLBaseForGroups string
 	QrzGroups        []string
 	Cron             string
+	Host             string
 	Port             int
 	NoFeed           bool
 	Debug            bool

src/database/main.go

@@ -3,10 +3,10 @@ package database
 import (
 	"fmt"
 	"log"
+	"time"
 
 	"git.paulbsd.com/paulbsd/qrz/src/config"
 	"git.paulbsd.com/paulbsd/qrz/src/qrz"
-	_ "github.com/lib/pq"
 	"xorm.io/xorm"
 	"xorm.io/xorm/names"
 )
@@ -15,6 +15,8 @@ import (
 func Initialize(config *config.Config) (err error) {
 	var connstr string
 	switch config.DbType {
+	case "sqlite3":
+		connstr = fmt.Sprintf("%s", config.DbName)
 	case "mysql":
 		connstr = fmt.Sprintf("%s:%s@%s/%s",
 			config.DbUsername,
@@ -30,9 +32,15 @@ func Initialize(config *config.Config) (err error) {
 			config.DbHostname,
 			config.DbName)
 	}
-	config.Db, err = xorm.NewEngine(config.DbType, connstr)
+
-	if err != nil {
+	for {
-		log.Fatalln(err)
+		log.Println("connecting to database")
+		config.Db, err = xorm.NewEngine(config.DbType, connstr)
+		if err != nil {
+			time.Sleep(1 * time.Second)
+		} else {
+			break
+		}
 	}
 
 	config.Db.SetMapper(names.GonicMapper{})

src/qrz/main.go

@@ -2,7 +2,7 @@ package qrz
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"regexp"
@@ -14,6 +14,13 @@ import (
 	"golang.org/x/net/html"
 )
 
+const gxpath = "//center/form/select/*"
+const agent = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36"
+
+var frsre = regexp.MustCompile(`^   [0-9]{1,4}\s[A-Z]{1,5}\s[0-9]{1,5}`)
+var gre1 = regexp.MustCompile(`.*document.write\('(.*)'\).*`)
+var gre2 = regexp.MustCompile(`.*_(\d{1,3})\.php$`)
+
 // InitCronConfig create task schedules
 func InitCronConfig(config config.Config) (err error) {
 	cr := cron.New()
@@ -33,10 +40,9 @@ func Run(config config.Config) (err error) {
 
 	for _, group := range groups {
 		url := fmt.Sprintf(config.URLBase, group)
-		log.Println(
+		log.Printf("Processing the %s group with URL %s",
-			fmt.Sprintf("Processing the %s group with URL %s",
+			group,
-				group,
+			url)
-				url))
 
 		bodyStr, err := getBody(url)
 		if err != nil {
@@ -63,42 +69,46 @@ func Run(config config.Config) (err error) {
 				continue
 			}
 		} else {
-			log.Println(
+			log.Printf("No entry to insert in database for group %s",
-				fmt.Sprintf("No entry to insert in database for group %s",
+				group)
-					group))
 		}
 	}
 	return
 }
 
 func getGroups(urlbase string) (groups []string, err error) {
-	re1 := regexp.MustCompile(`.*document.write\('(.*)'\).*`)
+	client := &http.Client{}
-	re2 := regexp.MustCompile(`.*_(\d{1,3})\.php$`)
+	req, _ := http.NewRequest("GET", urlbase, nil)
-	xpath := `//center/form/select/*`
+	req.Header.Set("User-Agent", agent)
 
-	clt := &http.Client{}
+	resp, err := client.Do(req)
-	resp, err := clt.Get(urlbase)
 	if err != nil {
 		log.Println(err)
 	}
-	pagebody, err := ioutil.ReadAll(resp.Body)
+	pagebody, err := io.ReadAll(resp.Body)
 	if err != nil {
 		log.Println(err)
 	}
 	retstr := string(pagebody)
 
-	b := re1.FindStringSubmatch(retstr)
+	var body string
-	body := b[1]
+	res := gre1.FindStringSubmatch(retstr)
+	if len(res) > 0 {
+		body = res[1]
+	} else {
+		log.Printf("error getting body for url %s\n", urlbase)
+		return
+	}
 
 	htmlpage, err := htmlquery.Parse(strings.NewReader(body))
 	if err != nil {
 		return
 	}
 
-	query := htmlquery.Find(htmlpage, xpath)
+	query := htmlquery.Find(htmlpage, gxpath)
 
 	for _, opt := range query {
-		rematch := re2.FindStringSubmatch(opt.Attr[0].Val)
+		rematch := gre2.FindStringSubmatch(opt.Attr[0].Val)
 		if len(rematch) > 1 {
 			groups = append(groups, rematch[1])
 		}
@@ -109,14 +119,16 @@ func getGroups(urlbase string) (groups []string, err error) {
 
 // getBody fetch html page
 func getBody(url string) (string, error) {
-	var client http.Client
+	client := &http.Client{}
+	req, _ := http.NewRequest("GET", url, nil)
+	req.Header.Set("User-Agent", agent)
 
-	resp, err := client.Get(url)
+	resp, err := client.Do(req)
 	if err != nil {
 		return "", err
 	}
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return "", err
 	}
@@ -133,7 +145,6 @@ func getBody(url string) (string, error) {
 // getFrsEntries get FRS entries from html body
 func getFrsEntries(config config.Config, body string) (frsentries map[string]Qrz, err error) {
 	frsentries = make(map[string]Qrz)
-	re := regexp.MustCompile(`^   [0-9]{1,4}\s[A-Z]{1,5}\s[0-9]{1,5}`)
 
 	htmlpage, err := htmlquery.Parse(strings.NewReader(body))
 	if err != nil {
@@ -144,7 +155,7 @@ func getFrsEntries(config config.Config, body string) (frsentries map[string]Qrz
 		td := htmlquery.Find(n, "//td")
 
 		if len(td) >= 6 {
-			if re.MatchString(htmlquery.InnerText(td[1])) {
+			if frsre.MatchString(htmlquery.InnerText(td[1])) {
 				frs := Qrz{
 					DMRID:   getColumn(td[0]),
 					QRZ:     getColumn(td[1]),
@@ -153,7 +164,7 @@ func getFrsEntries(config config.Config, body string) (frsentries map[string]Qrz
 					Dept:    getColumn(td[4]),
 					Country: getColumn(td[5])}
 				frsentries[frs.QRZ] = frs
-			} else if re.MatchString(htmlquery.InnerText(td[0])) {
+			} else if frsre.MatchString(htmlquery.InnerText(td[0])) {
 				frs := Qrz{
 					QRZ:     getColumn(td[0]),
 					Name:    getColumn(td[1]),
@@ -198,9 +209,8 @@ func insertFrsEntryToDB(config config.Config, frsPeople map[string]Qrz) (err err
 
 	var qrzNum int
 
-	log.Println(
+	log.Printf("Starting insert of %d entries",
-		fmt.Sprintf("Starting insert of %d entries",
+		len(frsPeople))
-			len(frsPeople)))
 
 	for _, frs := range frsPeople {
 		_, err = session.Insert(&frs)
@@ -220,7 +230,7 @@ func insertFrsEntryToDB(config config.Config, frsPeople map[string]Qrz) (err err
 	if err != nil {
 		return err
 	}
-	log.Println(fmt.Sprintf("Committed %d qrz entries", qrzNum))
+	log.Printf("Committed %d qrz entries", qrzNum)
 
 	return nil
 }
@@ -252,9 +262,9 @@ func ToSlice(qrz Qrz) (out []string) {
 type Qrz struct {
 	ID      int    `db:"id" xorm:"pk autoincr"`
 	QRZ     string `db:"qrz" xorm:"index notnull"`
-	DMRID   string `db:"dmrid" xorm:"notnull"`
+	DMRID   string `db:"dmrid" xorm:"index notnull"`
 	Name    string `db:"name" xorm:"index notnull"`
-	Address string `db:"address" xorm:"notnull"`
+	Address string `db:"address" xorm:"index notnull"`
 	City    string `db:"city" xorm:"index notnull"`
 	Zipcode string `db:"zipcode" xorm:"index varchar(5) notnull"`
 	Dept    string `db:"dept" xorm:"index notnull"`

src/qrzws/main.go

@@ -1,32 +1,34 @@
-//go:generate packr2 -v
-
 package qrzws
 
 import (
 	"fmt"
 	"log"
 	"net/http"
+	"reflect"
 	"regexp"
 	"strings"
 
+	root "git.paulbsd.com/paulbsd/qrz"
 	"git.paulbsd.com/paulbsd/qrz/src/config"
 	"git.paulbsd.com/paulbsd/qrz/src/page"
 	"git.paulbsd.com/paulbsd/qrz/src/qrz"
 	"git.paulbsd.com/paulbsd/qrz/src/static"
 	"git.paulbsd.com/paulbsd/qrz/src/templates"
-	"github.com/gobuffalo/packr/v2"
 
 	"github.com/labstack/echo/v4"
 )
 
+var tablename = strings.ToLower(strings.Split(fmt.Sprintf("%v", reflect.TypeOf(qrz.Qrz{})), ".")[1])
+
+var colre = regexp.MustCompile(`^[A-Za-z0-9]+$`)
+var orderre = regexp.MustCompile(`^(ASC|asc|DESC|desc)$`)
+var intre = regexp.MustCompile(`^[0-9]+$`)
+
 // RunServer runs the main echo server
 func RunServer(config config.Config) (err error) {
 	var p page.Page
 
-	templatesbox := packr.New("templates", "../../templates")
+	builtTemplates, err := templates.BuildTemplates(&root.Files)
-	staticbox := packr.New("static", "../../static")
-
-	builtTemplates, err := templates.BuildTemplates(templatesbox)
 	if err != nil {
 		log.Println(err)
 	}
@@ -37,7 +39,7 @@ func RunServer(config config.Config) (err error) {
 
 	e.GET("/", p.Index)
 	e.GET("/static/*", func(c echo.Context) error {
-		return static.GetStatic(staticbox, c)
+		return static.GetStatic(&root.Files, c)
 	})
 	e.POST("/qrzws", func(c echo.Context) (err error) {
 		res, err := Run(c, config)
@@ -48,18 +50,18 @@ func RunServer(config config.Config) (err error) {
 		return c.JSON(http.StatusOK, res)
 	})
 	e.GET("/export_frs.csv", func(c echo.Context) (err error) {
-		data, mime, err := RunCSVExport(c, config)
+		data, err := RunCSVExport(c, config)
 		if err != nil {
 			return c.String(http.StatusInternalServerError,
 				fmt.Sprintf("Error 500 %s", err))
 		}
-		return c.Blob(http.StatusOK, mime, data)
+		return c.Blob(http.StatusOK, "text/csv", data)
 	})
 
 	if !config.NoFeed {
 		go qrz.Run(config)
 	}
-	e.Logger.Fatal(e.Start(fmt.Sprintf(":%d", config.Port)))
+	e.Logger.Fatal(e.Start(fmt.Sprintf("%s:%d", config.Host, config.Port)))
 	return
 }
 
@@ -141,8 +143,11 @@ func BuildQuery(config config.Config, qrzdt *QrzDatatableInput) (qrz []qrz.Qrz,
 // BuildQCntFil builds query for counting filtered
 func BuildQCntFil(config config.Config, qrzdt *QrzDatatableInput) (cnt int64, err error) {
 	searchstatement, err := SetSearchLike(config, qrzdt)
+	if err != nil {
+		log.Println(err)
+	}
 	cnt, err = config.Db.SQL(
-		fmt.Sprintf("SELECT COUNT(*) FROM qrz WHERE %s",
+		fmt.Sprintf("SELECT COUNT(*) FROM %s WHERE %s", tablename,
 			searchstatement)).Count()
 
 	return
@@ -159,7 +164,6 @@ func BuildQCntTot(config config.Config, qrzdt *QrzDatatableInput) (cnt int64, er
 // SetSelect build the sql select statement part
 func SetSelect(config config.Config, qrzdt *QrzDatatableInput) (selectstatement string, err error) {
 	var cols []string
-	colre := regexp.MustCompile(`^[A-Za-z0-9]+$`)
 
 	if len(qrzdt.Columns) > 0 {
 		for _, col := range qrzdt.Columns {
@@ -167,7 +171,7 @@ func SetSelect(config config.Config, qrzdt *QrzDatatableInput) (selectstatement
 			if valid {
 				cols = append(cols, col.Name)
 			} else {
-				err = fmt.Errorf("String does not match prerequisites")
+				err = fmt.Errorf("string does not match prerequisites")
 				return
 			}
 		}
@@ -181,17 +185,13 @@ func SetSelect(config config.Config, qrzdt *QrzDatatableInput) (selectstatement
 
 // SetOrder build the sql order statement part
 func SetOrder(config config.Config, qrzdt *QrzDatatableInput) (orderdir string, ordercols []string, err error) {
-	colre := regexp.MustCompile(`^[A-Za-z0-9]+$`)
-	orderre := regexp.MustCompile(`^(ASC|asc|DESC|desc)$`)
-
 	for _, col := range qrzdt.Order {
 		if colre.MatchString(qrzdt.Columns[col.Column].Name) &&
 			orderre.MatchString(col.Dir) {
-			ordercols = append(ordercols,
+			ordercols = append(ordercols, qrzdt.Columns[col.Column].Name)
-				fmt.Sprintf("%s", qrzdt.Columns[col.Column].Name))
 			orderdir = col.Dir
 		} else {
-			err = fmt.Errorf("Order statements does not match prerequisites")
+			err = fmt.Errorf("order statements does not match prerequisites")
 			return
 		}
 	}
@@ -201,7 +201,6 @@ func SetOrder(config config.Config, qrzdt *QrzDatatableInput) (orderdir string,
 
 // SetLimit build the sql limit
 func SetLimit(config config.Config, qrzdt *QrzDatatableInput) (limit int, offset int, err error) {
-	intre := regexp.MustCompile(`^[0-9]+$`)
 
 	if qrzdt.Length < 1 {
 		qrzdt.Length = 50
@@ -213,7 +212,7 @@ func SetLimit(config config.Config, qrzdt *QrzDatatableInput) (limit int, offset
 		limit = qrzdt.Length
 		offset = qrzdt.Start
 	} else {
-		err = fmt.Errorf("Limit statements does not match prerequisites")
+		err = fmt.Errorf("limit statements does not match prerequisites")
 		return
 	}
 
@@ -224,9 +223,20 @@ func SetLimit(config config.Config, qrzdt *QrzDatatableInput) (limit int, offset
 func SetSearchLike(config config.Config, qrzdt *QrzDatatableInput) (searchstmt string, err error) {
 	var searchstmtslice []string
 	if len(qrzdt.Columns) > 0 {
+		var searchstr string
+		switch config.DbType {
+		case "sqlite3":
+			searchstr = "%s LIKE '%s%%'"
+		case "mysql":
+			searchstr = "%s LIKE '%s%%'"
+		case "postgresql":
+			searchstr = "%s ~* '%s'"
+		default:
+			searchstr = "%s ~* '%s'"
+		}
 		for id, i := range qrzdt.Columns {
 			searchstmtslice = append(searchstmtslice,
-				fmt.Sprintf("%s ILIKE '%%%s%%'", i.Name, qrzdt.Search.Value))
+				fmt.Sprintf(searchstr, i.Name, qrzdt.Search.Value))
 			if id < len(qrzdt.Columns)-1 {
 				searchstmtslice = append(searchstmtslice, "OR")
 			}
@@ -242,12 +252,10 @@ func SetSearchLike(config config.Config, qrzdt *QrzDatatableInput) (searchstmt s
 }
 
 // RunCSVExport runs the main loop
-func RunCSVExport(c echo.Context, config config.Config) (data []byte, mime string, err error) {
+func RunCSVExport(c echo.Context, config config.Config) (data []byte, err error) {
-	mime = "text/csv"
 	var q []qrz.Qrz
-	var res []string
+	var res = []string{"QRZ,Name,City,Dept,Country,DMRID"}
 	err = config.Db.Asc("qrz").Find(&q)
-	res = append(res, "QRZ,Name,City,Dept,Country,DMRID")
 	for _, item := range q {
 		res = append(res, strings.Join(qrz.ToSlice(item), ","))
 	}

src/static/main.go

@@ -1,29 +1,36 @@
-//go:generate packr2 -v
-
 package static
 
 import (
+	"embed"
+	"fmt"
 	"log"
 	"net/http"
 	"strings"
 
-	"github.com/gobuffalo/packr/v2"
 	"github.com/labstack/echo/v4"
 )
 
 // GetStatic returns static file content
-func GetStatic(box *packr.Box, c echo.Context) (err error) {
+func GetStatic(fs *embed.FS, c echo.Context) (err error) {
-	name := c.Param("*")
+	var basedir = "static"
-	cnt, err := box.FindString(name)
+	var name = c.Param("*")
+	if strings.HasSuffix(name, ".map") {
+		return c.String(http.StatusNotFound, "")
+	}
+
+	cnt, err := fs.ReadFile(fmt.Sprintf("%s/%s", basedir, name))
 	if err != nil {
 		log.Println(err)
+		return c.String(http.StatusNotFound, "")
 	}
+
 	if strings.HasSuffix(name, ".js") {
 		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJavaScript)
 	} else if strings.HasSuffix(name, ".css") {
 		c.Response().Header().Set(echo.HeaderContentType, "text/css")
 	}
-	return c.String(http.StatusOK, cnt)
+	c.Response().Header().Add("Cache-Control", "max-age=172800")
+	return c.String(http.StatusOK, string(cnt))
 }
 
 // Static defines static file

src/templates/main.go

@@ -1,18 +1,14 @@
-//go:generate packr2 -v
-
 package templates
 
 import (
+	"embed"
+	"fmt"
 	"html/template"
 	"io"
-	"io/ioutil"
 	"log"
-	"os"
 	"strings"
 
-	"github.com/gobuffalo/packr/v2"
 	"github.com/labstack/echo/v4"
-	"github.com/markbates/pkger"
 )
 
 // Render is a method that render templates
@@ -20,48 +16,26 @@ func (t *Template) Render(w io.Writer, name string, data interface{}, c echo.Con
 	if strings.HasSuffix(name, ".html") {
 		c.Response().Header().Set(echo.HeaderContentType, echo.MIMETextHTMLCharsetUTF8)
 	}
+	c.Response().Header().Add("Cache-Control", "max-age=172800")
 	return t.templates.ExecuteTemplate(w, name, data)
 }
 
 // BuildTemplates converts packr packages to html/template
-func BuildTemplates(box *packr.Box) (builttemplates *Template, err error) {
+func BuildTemplates(fs *embed.FS) (builttemplates *Template, err error) {
-	tmpl := template.New("templates")
+	basedir := "templates"
+	tmpl := template.New(basedir)
 
-	for _, filename := range box.List() {
+	dir, err := fs.ReadDir(basedir)
-		tmplContent, err := box.FindString(filename)
-		if err != nil {
-			log.Println(err)
-		}
-		tmpl.New(filename).Parse(tmplContent)
-	}
-
-	builttemplate := &Template{
-		templates: tmpl,
-	}
-
-	return builttemplate, nil
-}
-
-// BuildTemplatesDir converts packr packages to html/template
-func BuildTemplatesDir(dir string) (builttemplates *Template, err error) {
-	tmpl := template.New("templates")
-
-	err = pkger.Walk(dir, func(path string, info os.FileInfo, err error) error {
-		if err != nil {
-			return err
-		}
-		freader, err := pkger.Open(path)
-		if err != nil {
-			log.Println(err)
-		}
-		tmplContent, err := ioutil.ReadAll(freader)
-		tmpl.New(info.Name()).Parse(string(tmplContent))
-		log.Println(info.Name(), tmplContent)
-		return err
-	})
 	if err != nil {
 		log.Println(err)
 	}
+	for _, filename := range dir {
+		tmplContent, err := fs.ReadFile(fmt.Sprintf("%s/%s", basedir, filename.Name()))
+		if err != nil {
+			log.Println(err)
+		}
+		tmpl.New(filename.Name()).Parse(string(tmplContent))
+	}
 
 	builttemplate := &Template{
 		templates: tmpl,

static/css/dataTables.foundation.css

@@ -1,118 +0,0 @@
-table.dataTable {
-  clear: both;
-  margin: 0.5em 0 !important;
-  max-width: none !important;
-  width: 100%;
-}
-table.dataTable td,
-table.dataTable th {
-  -webkit-box-sizing: content-box;
-  box-sizing: content-box;
-}
-table.dataTable td.dataTables_empty,
-table.dataTable th.dataTables_empty {
-  text-align: center;
-}
-table.dataTable.nowrap th, table.dataTable.nowrap td {
-  white-space: nowrap;
-}
-
-div.dataTables_wrapper {
-  position: relative;
-}
-div.dataTables_wrapper div.dataTables_length label {
-  float: left;
-  text-align: left;
-  margin-bottom: 0;
-}
-div.dataTables_wrapper div.dataTables_length select {
-  width: 75px;
-  margin-bottom: 0;
-}
-div.dataTables_wrapper div.dataTables_filter label {
-  float: right;
-  margin-bottom: 0;
-}
-div.dataTables_wrapper div.dataTables_filter input {
-  display: inline-block !important;
-  width: auto !important;
-  margin-bottom: 0;
-  margin-left: 0.5em;
-}
-div.dataTables_wrapper div.dataTables_info {
-  padding-top: 2px;
-}
-div.dataTables_wrapper div.dataTables_paginate {
-  float: right;
-  margin: 0;
-}
-div.dataTables_wrapper div.dataTables_processing {
-  position: absolute;
-  top: 50%;
-  left: 50%;
-  width: 200px;
-  margin-left: -100px;
-  margin-top: -26px;
-  text-align: center;
-  padding: 1rem 0;
-}
-
-table.dataTable thead > tr > th.sorting_asc, table.dataTable thead > tr > th.sorting_desc, table.dataTable thead > tr > th.sorting,
-table.dataTable thead > tr > td.sorting_asc,
-table.dataTable thead > tr > td.sorting_desc,
-table.dataTable thead > tr > td.sorting {
-  padding-right: 1.5rem;
-}
-table.dataTable thead > tr > th:active,
-table.dataTable thead > tr > td:active {
-  outline: none;
-}
-table.dataTable thead .sorting,
-table.dataTable thead .sorting_asc,
-table.dataTable thead .sorting_desc,
-table.dataTable thead .sorting_asc_disabled,
-table.dataTable thead .sorting_desc_disabled {
-  cursor: pointer;
-}
-table.dataTable thead .sorting,
-table.dataTable thead .sorting_asc,
-table.dataTable thead .sorting_desc,
-table.dataTable thead .sorting_asc_disabled,
-table.dataTable thead .sorting_desc_disabled {
-  background-repeat: no-repeat;
-  background-position: center right;
-}
-table.dataTable thead .sorting {
-  background-image: url("../images/sort_both.png");
-}
-table.dataTable thead .sorting_asc {
-  background-image: url("../images/sort_asc.png");
-}
-table.dataTable thead .sorting_desc {
-  background-image: url("../images/sort_desc.png");
-}
-table.dataTable thead .sorting_asc_disabled {
-  background-image: url("../images/sort_asc_disabled.png");
-}
-table.dataTable thead .sorting_desc_disabled {
-  background-image: url("../images/sort_desc_disabled.png");
-}
-
-div.dataTables_scrollHead table {
-  margin-bottom: 0 !important;
-}
-
-div.dataTables_scrollBody table {
-  border-top: none;
-  margin-top: 0 !important;
-  margin-bottom: 0 !important;
-}
-div.dataTables_scrollBody table tbody tr:first-child th,
-div.dataTables_scrollBody table tbody tr:first-child td {
-  border-top: none;
-}
-
-div.dataTables_scrollFoot table {
-  margin-top: 0 !important;
-  border-top: none;
-}

static/css/dataTables.material.css

@@ -1,126 +0,0 @@
-div.dataTables_wrapper div.dataTables_filter {
-  text-align: right;
-}
-div.dataTables_wrapper div.dataTables_filter input {
-  margin-left: 0.5em;
-}
-div.dataTables_wrapper div.dataTables_info {
-  padding-top: 10px;
-  white-space: nowrap;
-}
-div.dataTables_wrapper div.dataTables_processing {
-  position: absolute;
-  top: 50%;
-  left: 50%;
-  width: 200px;
-  margin-left: -100px;
-  text-align: center;
-}
-div.dataTables_wrapper div.dataTables_paginate {
-  text-align: right;
-}
-div.dataTables_wrapper div.mdc-grid.dt-table {
-  padding-top: 0;
-  padding-bottom: 0;
-}
-div.dataTables_wrapper div.mdc-grid.dt-table > div.mdc-cell {
-  margin-top: 0;
-  margin-bottom: 0;
-}
-div.dataTables_wrapper table.mdc-data-table__table {
-  table-layout: auto;
-}
-div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_asc, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_desc {
-  padding-right: 30px;
-}
-div.dataTables_wrapper table.mdc-data-table__table thead tr th:active {
-  outline: none;
-}
-div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_asc, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_desc, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting {
-  cursor: pointer;
-  position: relative;
-}
-div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_asc:before, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_asc:after, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_desc:before, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_desc:after, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting:before, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting:after {
-  position: absolute;
-  display: block;
-  opacity: 0.3;
-  right: 1em;
-  line-height: 9px;
-  font-size: 0.9em;
-}
-div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_asc:before, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_desc:before, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting:before {
-  bottom: 50%;
-  content: "\25B4";
-}
-div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_asc:after, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_desc:after, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting:after {
-  top: 50%;
-  content: "\25BE";
-}
-div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_asc:before, div.dataTables_wrapper table.mdc-data-table__table thead tr th.sorting_desc:after {
-  opacity: 0.8;
-}
-div.dataTables_wrapper .mdc-data-table__cell {
-  border: 1px solid rgba(0, 0, 0, 0.12);
-}
-div.dataTables_wrapper div.mdc-layout-grid {
-  margin: 0px;
-  padding: 5px;
-}
-
-table.dataTable thead > tr > th.sorting_asc, table.dataTable thead > tr > th.sorting_desc, table.dataTable thead > tr > th.sorting,
-table.dataTable thead > tr > td.sorting_asc,
-table.dataTable thead > tr > td.sorting_desc,
-table.dataTable thead > tr > td.sorting {
-  padding-right: 30px;
-}
-table.dataTable thead > tr > th:active,
-table.dataTable thead > tr > td:active {
-  outline: none;
-}
-table.dataTable thead .sorting,
-table.dataTable thead .sorting_asc,
-table.dataTable thead .sorting_desc,
-table.dataTable thead .sorting_asc_disabled,
-table.dataTable thead .sorting_desc_disabled {
-  cursor: pointer;
-  position: relative;
-}
-table.dataTable thead .sorting:before, table.dataTable thead .sorting:after,
-table.dataTable thead .sorting_asc:before,
-table.dataTable thead .sorting_asc:after,
-table.dataTable thead .sorting_desc:before,
-table.dataTable thead .sorting_desc:after,
-table.dataTable thead .sorting_asc_disabled:before,
-table.dataTable thead .sorting_asc_disabled:after,
-table.dataTable thead .sorting_desc_disabled:before,
-table.dataTable thead .sorting_desc_disabled:after {
-  position: absolute;
-  bottom: 11px;
-  display: block;
-  opacity: 0.3;
-  font-size: 1.3em;
-}
-table.dataTable thead .sorting:before,
-table.dataTable thead .sorting_asc:before,
-table.dataTable thead .sorting_desc:before,
-table.dataTable thead .sorting_asc_disabled:before,
-table.dataTable thead .sorting_desc_disabled:before {
-  right: 1em;
-  content: "\2191";
-}
-table.dataTable thead .sorting:after,
-table.dataTable thead .sorting_asc:after,
-table.dataTable thead .sorting_desc:after,
-table.dataTable thead .sorting_asc_disabled:after,
-table.dataTable thead .sorting_desc_disabled:after {
-  right: 0.5em;
-  content: "\2193";
-}
-table.dataTable thead .sorting_asc:before,
-table.dataTable thead .sorting_desc:after {
-  opacity: 1;
-}
-table.dataTable thead .sorting_asc_disabled:before,
-table.dataTable thead .sorting_desc_disabled:after {
-  opacity: 0;
-}

static/css/dataTables.semanticui.css

@@ -1,102 +0,0 @@
-/*
- * Styling for DataTables with Semantic UI
- */
-table.dataTable.table {
-  margin: 0;
-}
-table.dataTable.table thead th,
-table.dataTable.table thead td {
-  position: relative;
-}
-table.dataTable.table thead th.sorting, table.dataTable.table thead th.sorting_asc, table.dataTable.table thead th.sorting_desc,
-table.dataTable.table thead td.sorting,
-table.dataTable.table thead td.sorting_asc,
-table.dataTable.table thead td.sorting_desc {
-  padding-right: 20px;
-}
-table.dataTable.table thead th.sorting:after, table.dataTable.table thead th.sorting_asc:after, table.dataTable.table thead th.sorting_desc:after,
-table.dataTable.table thead td.sorting:after,
-table.dataTable.table thead td.sorting_asc:after,
-table.dataTable.table thead td.sorting_desc:after {
-  position: absolute;
-  top: 12px;
-  right: 8px;
-  display: block;
-  font-family: Icons;
-}
-table.dataTable.table thead th.sorting:after,
-table.dataTable.table thead td.sorting:after {
-  content: "\f0dc";
-  color: #ddd;
-  font-size: 0.8em;
-}
-table.dataTable.table thead th.sorting_asc:after,
-table.dataTable.table thead td.sorting_asc:after {
-  content: "\f0de";
-}
-table.dataTable.table thead th.sorting_desc:after,
-table.dataTable.table thead td.sorting_desc:after {
-  content: "\f0dd";
-}
-table.dataTable.table td,
-table.dataTable.table th {
-  -webkit-box-sizing: content-box;
-  box-sizing: content-box;
-}
-table.dataTable.table td.dataTables_empty,
-table.dataTable.table th.dataTables_empty {
-  text-align: center;
-}
-table.dataTable.table.nowrap th,
-table.dataTable.table.nowrap td {
-  white-space: nowrap;
-}
-
-div.dataTables_wrapper div.dataTables_length select {
-  vertical-align: middle;
-  min-height: 2.7142em;
-}
-div.dataTables_wrapper div.dataTables_length .ui.selection.dropdown {
-  min-width: 0;
-}
-div.dataTables_wrapper div.dataTables_filter span.input {
-  margin-left: 0.5em;
-}
-div.dataTables_wrapper div.dataTables_info {
-  padding-top: 13px;
-  white-space: nowrap;
-}
-div.dataTables_wrapper div.dataTables_processing {
-  position: absolute;
-  top: 50%;
-  left: 50%;
-  width: 200px;
-  margin-left: -100px;
-  text-align: center;
-}
-div.dataTables_wrapper div.row.dt-table {
-  padding: 0;
-}
-div.dataTables_wrapper div.dataTables_scrollHead table.dataTable {
-  border-bottom-right-radius: 0;
-  border-bottom-left-radius: 0;
-  border-bottom: none;
-}
-div.dataTables_wrapper div.dataTables_scrollBody thead .sorting:after,
-div.dataTables_wrapper div.dataTables_scrollBody thead .sorting_asc:after,
-div.dataTables_wrapper div.dataTables_scrollBody thead .sorting_desc:after {
-  display: none;
-}
-div.dataTables_wrapper div.dataTables_scrollBody table.dataTable {
-  border-radius: 0;
-  border-top: none;
-  border-bottom-width: 0;
-}
-div.dataTables_wrapper div.dataTables_scrollBody table.dataTable.no-footer {
-  border-bottom-width: 1px;
-}
-div.dataTables_wrapper div.dataTables_scrollFoot table.dataTable {
-  border-top-right-radius: 0;
-  border-top-left-radius: 0;
-  border-top: none;
-}

static/css/dataTables.uikit.css

@@ -1,164 +0,0 @@
-table.dataTable {
-  clear: both;
-}
-table.dataTable td,
-table.dataTable th {
-  -webkit-box-sizing: content-box;
-  box-sizing: content-box;
-}
-table.dataTable td.dataTables_empty,
-table.dataTable th.dataTables_empty {
-  text-align: center;
-}
-table.dataTable.nowrap th,
-table.dataTable.nowrap td {
-  white-space: nowrap;
-}
-
-div.dataTables_wrapper div.row.uk-grid.dt-merge-grid {
-  margin-top: 5px;
-}
-div.dataTables_wrapper div.dataTables_length label {
-  font-weight: normal;
-  text-align: left;
-  white-space: nowrap;
-}
-div.dataTables_wrapper div.dataTables_length select {
-  width: 75px;
-  display: inline-block;
-}
-div.dataTables_wrapper div.dataTables_filter {
-  text-align: right;
-}
-div.dataTables_wrapper div.dataTables_filter label {
-  font-weight: normal;
-  white-space: nowrap;
-  text-align: left;
-}
-div.dataTables_wrapper div.dataTables_filter input {
-  margin-left: 0.5em;
-  display: inline-block;
-  width: auto;
-}
-div.dataTables_wrapper div.dataTables_info {
-  padding-top: 8px;
-  white-space: nowrap;
-}
-div.dataTables_wrapper div.dataTables_paginate {
-  margin: 0;
-  white-space: nowrap;
-  text-align: right;
-}
-div.dataTables_wrapper div.dataTables_paginate ul.pagination {
-  margin: 2px 0;
-  white-space: nowrap;
-}
-div.dataTables_wrapper div.dataTables_processing {
-  position: absolute;
-  top: 50%;
-  left: 50%;
-  width: 200px;
-  margin-left: -100px;
-  margin-top: -26px;
-  text-align: center;
-  padding: 1em 0;
-}
-
-table.dataTable thead > tr > th.sorting_asc, table.dataTable thead > tr > th.sorting_desc, table.dataTable thead > tr > th.sorting,
-table.dataTable thead > tr > td.sorting_asc,
-table.dataTable thead > tr > td.sorting_desc,
-table.dataTable thead > tr > td.sorting {
-  padding-right: 30px;
-}
-table.dataTable thead > tr > th:active,
-table.dataTable thead > tr > td:active {
-  outline: none;
-}
-table.dataTable thead .sorting,
-table.dataTable thead .sorting_asc,
-table.dataTable thead .sorting_desc,
-table.dataTable thead .sorting_asc_disabled,
-table.dataTable thead .sorting_desc_disabled {
-  cursor: pointer;
-  position: relative;
-}
-table.dataTable thead .sorting:before, table.dataTable thead .sorting:after,
-table.dataTable thead .sorting_asc:before,
-table.dataTable thead .sorting_asc:after,
-table.dataTable thead .sorting_desc:before,
-table.dataTable thead .sorting_desc:after,
-table.dataTable thead .sorting_asc_disabled:before,
-table.dataTable thead .sorting_asc_disabled:after,
-table.dataTable thead .sorting_desc_disabled:before,
-table.dataTable thead .sorting_desc_disabled:after {
-  position: absolute;
-  bottom: 1.2em;
-  display: block;
-  opacity: 0.3;
-}
-table.dataTable thead .sorting:before,
-table.dataTable thead .sorting_asc:before,
-table.dataTable thead .sorting_desc:before,
-table.dataTable thead .sorting_asc_disabled:before,
-table.dataTable thead .sorting_desc_disabled:before {
-  right: 1em;
-  content: "\2191";
-}
-table.dataTable thead .sorting:after,
-table.dataTable thead .sorting_asc:after,
-table.dataTable thead .sorting_desc:after,
-table.dataTable thead .sorting_asc_disabled:after,
-table.dataTable thead .sorting_desc_disabled:after {
-  right: 0.5em;
-  content: "\2193";
-}
-table.dataTable thead .sorting_asc:before,
-table.dataTable thead .sorting_desc:after {
-  opacity: 1;
-}
-table.dataTable thead .sorting_asc_disabled:before,
-table.dataTable thead .sorting_desc_disabled:after {
-  opacity: 0;
-}
-
-div.dataTables_scrollHead table.dataTable {
-  margin-bottom: 0 !important;
-}
-
-div.dataTables_scrollBody table {
-  border-top: none;
-  margin-top: 0 !important;
-  margin-bottom: 0 !important;
-}
-div.dataTables_scrollBody table thead .sorting:after,
-div.dataTables_scrollBody table thead .sorting_asc:after,
-div.dataTables_scrollBody table thead .sorting_desc:after {
-  display: none;
-}
-div.dataTables_scrollBody table tbody tr:first-child th,
-div.dataTables_scrollBody table tbody tr:first-child td {
-  border-top: none;
-}
-
-div.dataTables_scrollFoot table {
-  margin-top: 0 !important;
-  border-top: none;
-}
-
-@media screen and (max-width: 767px) {
-  div.dataTables_wrapper div.dataTables_length,
-  div.dataTables_wrapper div.dataTables_filter,
-  div.dataTables_wrapper div.dataTables_info,
-  div.dataTables_wrapper div.dataTables_paginate {
-    text-align: center;
-  }
-}
-table.dataTable.uk-table-condensed > thead > tr > th {
-  padding-right: 20px;
-}
-table.dataTable.uk-table-condensed .sorting:after,
-table.dataTable.uk-table-condensed .sorting_asc:after,
-table.dataTable.uk-table-condensed .sorting_desc:after {
-  top: 6px;
-  right: 6px;
-}

static/css/jquery.dataTables.css

@@ -1,448 +0,0 @@
-/*
- * Table styles
- */
-table.dataTable {
-  width: 100%;
-  margin: 0 auto;
-  clear: both;
-  border-collapse: separate;
-  border-spacing: 0;
-  /*
-   * Header and footer styles
-   */
-  /*
-   * Body styles
-   */
-}
-table.dataTable thead th,
-table.dataTable tfoot th {
-  font-weight: bold;
-}
-table.dataTable thead th,
-table.dataTable thead td {
-  padding: 10px 18px;
-  border-bottom: 1px solid #111;
-}
-table.dataTable thead th:active,
-table.dataTable thead td:active {
-  outline: none;
-}
-table.dataTable tfoot th,
-table.dataTable tfoot td {
-  padding: 10px 18px 6px 18px;
-  border-top: 1px solid #111;
-}
-table.dataTable thead .sorting,
-table.dataTable thead .sorting_asc,
-table.dataTable thead .sorting_desc,
-table.dataTable thead .sorting_asc_disabled,
-table.dataTable thead .sorting_desc_disabled {
-  cursor: pointer;
-  *cursor: hand;
-  background-repeat: no-repeat;
-  background-position: center right;
-}
-table.dataTable thead .sorting {
-  background-image: url("../images/sort_both.png");
-}
-table.dataTable thead .sorting_asc {
-  background-image: url("../images/sort_asc.png");
-}
-table.dataTable thead .sorting_desc {
-  background-image: url("../images/sort_desc.png");
-}
-table.dataTable thead .sorting_asc_disabled {
-  background-image: url("../images/sort_asc_disabled.png");
-}
-table.dataTable thead .sorting_desc_disabled {
-  background-image: url("../images/sort_desc_disabled.png");
-}
-table.dataTable tbody tr {
-  background-color: #ffffff;
-}
-table.dataTable tbody tr.selected {
-  background-color: #B0BED9;
-}
-table.dataTable tbody th,
-table.dataTable tbody td {
-  padding: 8px 10px;
-}
-table.dataTable.row-border tbody th, table.dataTable.row-border tbody td, table.dataTable.display tbody th, table.dataTable.display tbody td {
-  border-top: 1px solid #ddd;
-}
-table.dataTable.row-border tbody tr:first-child th,
-table.dataTable.row-border tbody tr:first-child td, table.dataTable.display tbody tr:first-child th,
-table.dataTable.display tbody tr:first-child td {
-  border-top: none;
-}
-table.dataTable.cell-border tbody th, table.dataTable.cell-border tbody td {
-  border-top: 1px solid #ddd;
-  border-right: 1px solid #ddd;
-}
-table.dataTable.cell-border tbody tr th:first-child,
-table.dataTable.cell-border tbody tr td:first-child {
-  border-left: 1px solid #ddd;
-}
-table.dataTable.cell-border tbody tr:first-child th,
-table.dataTable.cell-border tbody tr:first-child td {
-  border-top: none;
-}
-table.dataTable.stripe tbody tr.odd, table.dataTable.display tbody tr.odd {
-  background-color: #f9f9f9;
-}
-table.dataTable.stripe tbody tr.odd.selected, table.dataTable.display tbody tr.odd.selected {
-  background-color: #acbad4;
-}
-table.dataTable.hover tbody tr:hover, table.dataTable.display tbody tr:hover {
-  background-color: #f6f6f6;
-}
-table.dataTable.hover tbody tr:hover.selected, table.dataTable.display tbody tr:hover.selected {
-  background-color: #aab7d1;
-}
-table.dataTable.order-column tbody tr > .sorting_1,
-table.dataTable.order-column tbody tr > .sorting_2,
-table.dataTable.order-column tbody tr > .sorting_3, table.dataTable.display tbody tr > .sorting_1,
-table.dataTable.display tbody tr > .sorting_2,
-table.dataTable.display tbody tr > .sorting_3 {
-  background-color: #fafafa;
-}
-table.dataTable.order-column tbody tr.selected > .sorting_1,
-table.dataTable.order-column tbody tr.selected > .sorting_2,
-table.dataTable.order-column tbody tr.selected > .sorting_3, table.dataTable.display tbody tr.selected > .sorting_1,
-table.dataTable.display tbody tr.selected > .sorting_2,
-table.dataTable.display tbody tr.selected > .sorting_3 {
-  background-color: #acbad5;
-}
-table.dataTable.display tbody tr.odd > .sorting_1, table.dataTable.order-column.stripe tbody tr.odd > .sorting_1 {
-  background-color: #f1f1f1;
-}
-table.dataTable.display tbody tr.odd > .sorting_2, table.dataTable.order-column.stripe tbody tr.odd > .sorting_2 {
-  background-color: #f3f3f3;
-}
-table.dataTable.display tbody tr.odd > .sorting_3, table.dataTable.order-column.stripe tbody tr.odd > .sorting_3 {
-  background-color: whitesmoke;
-}
-table.dataTable.display tbody tr.odd.selected > .sorting_1, table.dataTable.order-column.stripe tbody tr.odd.selected > .sorting_1 {
-  background-color: #a6b4cd;
-}
-table.dataTable.display tbody tr.odd.selected > .sorting_2, table.dataTable.order-column.stripe tbody tr.odd.selected > .sorting_2 {
-  background-color: #a8b5cf;
-}
-table.dataTable.display tbody tr.odd.selected > .sorting_3, table.dataTable.order-column.stripe tbody tr.odd.selected > .sorting_3 {
-  background-color: #a9b7d1;
-}
-table.dataTable.display tbody tr.even > .sorting_1, table.dataTable.order-column.stripe tbody tr.even > .sorting_1 {
-  background-color: #fafafa;
-}
-table.dataTable.display tbody tr.even > .sorting_2, table.dataTable.order-column.stripe tbody tr.even > .sorting_2 {
-  background-color: #fcfcfc;
-}
-table.dataTable.display tbody tr.even > .sorting_3, table.dataTable.order-column.stripe tbody tr.even > .sorting_3 {
-  background-color: #fefefe;
-}
-table.dataTable.display tbody tr.even.selected > .sorting_1, table.dataTable.order-column.stripe tbody tr.even.selected > .sorting_1 {
-  background-color: #acbad5;
-}
-table.dataTable.display tbody tr.even.selected > .sorting_2, table.dataTable.order-column.stripe tbody tr.even.selected > .sorting_2 {
-  background-color: #aebcd6;
-}
-table.dataTable.display tbody tr.even.selected > .sorting_3, table.dataTable.order-column.stripe tbody tr.even.selected > .sorting_3 {
-  background-color: #afbdd8;
-}
-table.dataTable.display tbody tr:hover > .sorting_1, table.dataTable.order-column.hover tbody tr:hover > .sorting_1 {
-  background-color: #eaeaea;
-}
-table.dataTable.display tbody tr:hover > .sorting_2, table.dataTable.order-column.hover tbody tr:hover > .sorting_2 {
-  background-color: #ececec;
-}
-table.dataTable.display tbody tr:hover > .sorting_3, table.dataTable.order-column.hover tbody tr:hover > .sorting_3 {
-  background-color: #efefef;
-}
-table.dataTable.display tbody tr:hover.selected > .sorting_1, table.dataTable.order-column.hover tbody tr:hover.selected > .sorting_1 {
-  background-color: #a2aec7;
-}
-table.dataTable.display tbody tr:hover.selected > .sorting_2, table.dataTable.order-column.hover tbody tr:hover.selected > .sorting_2 {
-  background-color: #a3b0c9;
-}
-table.dataTable.display tbody tr:hover.selected > .sorting_3, table.dataTable.order-column.hover tbody tr:hover.selected > .sorting_3 {
-  background-color: #a5b2cb;
-}
-table.dataTable.no-footer {
-  border-bottom: 1px solid #111;
-}
-table.dataTable.nowrap th, table.dataTable.nowrap td {
-  white-space: nowrap;
-}
-table.dataTable.compact thead th,
-table.dataTable.compact thead td {
-  padding: 4px 17px;
-}
-table.dataTable.compact tfoot th,
-table.dataTable.compact tfoot td {
-  padding: 4px;
-}
-table.dataTable.compact tbody th,
-table.dataTable.compact tbody td {
-  padding: 4px;
-}
-table.dataTable th.dt-left,
-table.dataTable td.dt-left {
-  text-align: left;
-}
-table.dataTable th.dt-center,
-table.dataTable td.dt-center,
-table.dataTable td.dataTables_empty {
-  text-align: center;
-}
-table.dataTable th.dt-right,
-table.dataTable td.dt-right {
-  text-align: right;
-}
-table.dataTable th.dt-justify,
-table.dataTable td.dt-justify {
-  text-align: justify;
-}
-table.dataTable th.dt-nowrap,
-table.dataTable td.dt-nowrap {
-  white-space: nowrap;
-}
-table.dataTable thead th.dt-head-left,
-table.dataTable thead td.dt-head-left,
-table.dataTable tfoot th.dt-head-left,
-table.dataTable tfoot td.dt-head-left {
-  text-align: left;
-}
-table.dataTable thead th.dt-head-center,
-table.dataTable thead td.dt-head-center,
-table.dataTable tfoot th.dt-head-center,
-table.dataTable tfoot td.dt-head-center {
-  text-align: center;
-}
-table.dataTable thead th.dt-head-right,
-table.dataTable thead td.dt-head-right,
-table.dataTable tfoot th.dt-head-right,
-table.dataTable tfoot td.dt-head-right {
-  text-align: right;
-}
-table.dataTable thead th.dt-head-justify,
-table.dataTable thead td.dt-head-justify,
-table.dataTable tfoot th.dt-head-justify,
-table.dataTable tfoot td.dt-head-justify {
-  text-align: justify;
-}
-table.dataTable thead th.dt-head-nowrap,
-table.dataTable thead td.dt-head-nowrap,
-table.dataTable tfoot th.dt-head-nowrap,
-table.dataTable tfoot td.dt-head-nowrap {
-  white-space: nowrap;
-}
-table.dataTable tbody th.dt-body-left,
-table.dataTable tbody td.dt-body-left {
-  text-align: left;
-}
-table.dataTable tbody th.dt-body-center,
-table.dataTable tbody td.dt-body-center {
-  text-align: center;
-}
-table.dataTable tbody th.dt-body-right,
-table.dataTable tbody td.dt-body-right {
-  text-align: right;
-}
-table.dataTable tbody th.dt-body-justify,
-table.dataTable tbody td.dt-body-justify {
-  text-align: justify;
-}
-table.dataTable tbody th.dt-body-nowrap,
-table.dataTable tbody td.dt-body-nowrap {
-  white-space: nowrap;
-}
-
-table.dataTable,
-table.dataTable th,
-table.dataTable td {
-  box-sizing: content-box;
-}
-
-/*
- * Control feature layout
- */
-.dataTables_wrapper {
-  position: relative;
-  clear: both;
-  *zoom: 1;
-  zoom: 1;
-}
-.dataTables_wrapper .dataTables_length {
-  float: left;
-}
-.dataTables_wrapper .dataTables_filter {
-  float: right;
-  text-align: right;
-}
-.dataTables_wrapper .dataTables_filter input {
-  margin-left: 0.5em;
-}
-.dataTables_wrapper .dataTables_info {
-  clear: both;
-  float: left;
-  padding-top: 0.755em;
-}
-.dataTables_wrapper .dataTables_paginate {
-  float: right;
-  text-align: right;
-  padding-top: 0.25em;
-}
-.dataTables_wrapper .dataTables_paginate .paginate_button {
-  box-sizing: border-box;
-  display: inline-block;
-  min-width: 1.5em;
-  padding: 0.5em 1em;
-  margin-left: 2px;
-  text-align: center;
-  text-decoration: none !important;
-  cursor: pointer;
-  *cursor: hand;
-  color: #333 !important;
-  border: 1px solid transparent;
-  border-radius: 2px;
-}
-.dataTables_wrapper .dataTables_paginate .paginate_button.current, .dataTables_wrapper .dataTables_paginate .paginate_button.current:hover {
-  color: #333 !important;
-  border: 1px solid #979797;
-  background-color: white;
-  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, white), color-stop(100%, #dcdcdc));
-  /* Chrome,Safari4+ */
-  background: -webkit-linear-gradient(top, white 0%, #dcdcdc 100%);
-  /* Chrome10+,Safari5.1+ */
-  background: -moz-linear-gradient(top, white 0%, #dcdcdc 100%);
-  /* FF3.6+ */
-  background: -ms-linear-gradient(top, white 0%, #dcdcdc 100%);
-  /* IE10+ */
-  background: -o-linear-gradient(top, white 0%, #dcdcdc 100%);
-  /* Opera 11.10+ */
-  background: linear-gradient(to bottom, white 0%, #dcdcdc 100%);
-  /* W3C */
-}
-.dataTables_wrapper .dataTables_paginate .paginate_button.disabled, .dataTables_wrapper .dataTables_paginate .paginate_button.disabled:hover, .dataTables_wrapper .dataTables_paginate .paginate_button.disabled:active {
-  cursor: default;
-  color: #666 !important;
-  border: 1px solid transparent;
-  background: transparent;
-  box-shadow: none;
-}
-.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
-  color: white !important;
-  border: 1px solid #111;
-  background-color: #585858;
-  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #585858), color-stop(100%, #111));
-  /* Chrome,Safari4+ */
-  background: -webkit-linear-gradient(top, #585858 0%, #111 100%);
-  /* Chrome10+,Safari5.1+ */
-  background: -moz-linear-gradient(top, #585858 0%, #111 100%);
-  /* FF3.6+ */
-  background: -ms-linear-gradient(top, #585858 0%, #111 100%);
-  /* IE10+ */
-  background: -o-linear-gradient(top, #585858 0%, #111 100%);
-  /* Opera 11.10+ */
-  background: linear-gradient(to bottom, #585858 0%, #111 100%);
-  /* W3C */
-}
-.dataTables_wrapper .dataTables_paginate .paginate_button:active {
-  outline: none;
-  background-color: #2b2b2b;
-  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #2b2b2b), color-stop(100%, #0c0c0c));
-  /* Chrome,Safari4+ */
-  background: -webkit-linear-gradient(top, #2b2b2b 0%, #0c0c0c 100%);
-  /* Chrome10+,Safari5.1+ */
-  background: -moz-linear-gradient(top, #2b2b2b 0%, #0c0c0c 100%);
-  /* FF3.6+ */
-  background: -ms-linear-gradient(top, #2b2b2b 0%, #0c0c0c 100%);
-  /* IE10+ */
-  background: -o-linear-gradient(top, #2b2b2b 0%, #0c0c0c 100%);
-  /* Opera 11.10+ */
-  background: linear-gradient(to bottom, #2b2b2b 0%, #0c0c0c 100%);
-  /* W3C */
-  box-shadow: inset 0 0 3px #111;
-}
-.dataTables_wrapper .dataTables_paginate .ellipsis {
-  padding: 0 1em;
-}
-.dataTables_wrapper .dataTables_processing {
-  position: absolute;
-  top: 50%;
-  left: 50%;
-  width: 100%;
-  height: 40px;
-  margin-left: -50%;
-  margin-top: -25px;
-  padding-top: 20px;
-  text-align: center;
-  font-size: 1.2em;
-  background-color: white;
-  background: -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(25%, rgba(255, 255, 255, 0.9)), color-stop(75%, rgba(255, 255, 255, 0.9)), color-stop(100%, rgba(255, 255, 255, 0)));
-  background: -webkit-linear-gradient(left, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-  background: -moz-linear-gradient(left, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-  background: -ms-linear-gradient(left, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-  background: -o-linear-gradient(left, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-  background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-}
-.dataTables_wrapper .dataTables_length,
-.dataTables_wrapper .dataTables_filter,
-.dataTables_wrapper .dataTables_info,
-.dataTables_wrapper .dataTables_processing,
-.dataTables_wrapper .dataTables_paginate {
-  color: #333;
-}
-.dataTables_wrapper .dataTables_scroll {
-  clear: both;
-}
-.dataTables_wrapper .dataTables_scroll div.dataTables_scrollBody {
-  *margin-top: -1px;
-  -webkit-overflow-scrolling: touch;
-}
-.dataTables_wrapper .dataTables_scroll div.dataTables_scrollBody > table > thead > tr > th, .dataTables_wrapper .dataTables_scroll div.dataTables_scrollBody > table > thead > tr > td, .dataTables_wrapper .dataTables_scroll div.dataTables_scrollBody > table > tbody > tr > th, .dataTables_wrapper .dataTables_scroll div.dataTables_scrollBody > table > tbody > tr > td {
-  vertical-align: middle;
-}
-.dataTables_wrapper .dataTables_scroll div.dataTables_scrollBody > table > thead > tr > th > div.dataTables_sizing,
-.dataTables_wrapper .dataTables_scroll div.dataTables_scrollBody > table > thead > tr > td > div.dataTables_sizing, .dataTables_wrapper .dataTables_scroll div.dataTables_scrollBody > table > tbody > tr > th > div.dataTables_sizing,
-.dataTables_wrapper .dataTables_scroll div.dataTables_scrollBody > table > tbody > tr > td > div.dataTables_sizing {
-  height: 0;
-  overflow: hidden;
-  margin: 0 !important;
-  padding: 0 !important;
-}
-.dataTables_wrapper.no-footer .dataTables_scrollBody {
-  border-bottom: 1px solid #111;
-}
-.dataTables_wrapper.no-footer div.dataTables_scrollHead table.dataTable,
-.dataTables_wrapper.no-footer div.dataTables_scrollBody > table {
-  border-bottom: none;
-}
-.dataTables_wrapper:after {
-  visibility: hidden;
-  display: block;
-  content: "";
-  clear: both;
-  height: 0;
-}
-
-@media screen and (max-width: 767px) {
-  .dataTables_wrapper .dataTables_info,
-  .dataTables_wrapper .dataTables_paginate {
-    float: none;
-    text-align: center;
-  }
-  .dataTables_wrapper .dataTables_paginate {
-    margin-top: 0.5em;
-  }
-}
-@media screen and (max-width: 640px) {
-  .dataTables_wrapper .dataTables_length,
-  .dataTables_wrapper .dataTables_filter {
-    float: none;
-    text-align: center;
-  }
-  .dataTables_wrapper .dataTables_filter {
-    margin-top: 0.5em;
-  }
-}

static/css/jquery.dataTables_themeroller.css

@@ -1,416 +0,0 @@
-/*
- * Table styles
- */
-table.dataTable {
-  width: 100%;
-  margin: 0 auto;
-  clear: both;
-  border-collapse: separate;
-  border-spacing: 0;
-  /*
-   * Header and footer styles
-   */
-  /*
-   * Body styles
-   */
-}
-table.dataTable thead th,
-table.dataTable thead td,
-table.dataTable tfoot th,
-table.dataTable tfoot td {
-  padding: 4px 10px;
-}
-table.dataTable thead th,
-table.dataTable tfoot th {
-  font-weight: bold;
-}
-table.dataTable thead th:active,
-table.dataTable thead td:active {
-  outline: none;
-}
-table.dataTable thead .sorting_asc,
-table.dataTable thead .sorting_desc,
-table.dataTable thead .sorting {
-  cursor: pointer;
-  *cursor: hand;
-}
-table.dataTable thead th div.DataTables_sort_wrapper {
-  position: relative;
-  padding-right: 10px;
-}
-table.dataTable thead th div.DataTables_sort_wrapper span {
-  position: absolute;
-  top: 50%;
-  margin-top: -8px;
-  right: -5px;
-}
-table.dataTable thead th.ui-state-default {
-  border-right-width: 0;
-}
-table.dataTable thead th.ui-state-default:last-child {
-  border-right-width: 1px;
-}
-table.dataTable tbody tr {
-  background-color: #ffffff;
-}
-table.dataTable tbody tr.selected {
-  background-color: #B0BED9;
-}
-table.dataTable tbody th,
-table.dataTable tbody td {
-  padding: 8px 10px;
-}
-table.dataTable th.center,
-table.dataTable td.center,
-table.dataTable td.dataTables_empty {
-  text-align: center;
-}
-table.dataTable th.right,
-table.dataTable td.right {
-  text-align: right;
-}
-table.dataTable.row-border tbody th, table.dataTable.row-border tbody td, table.dataTable.display tbody th, table.dataTable.display tbody td {
-  border-top: 1px solid #ddd;
-}
-table.dataTable.row-border tbody tr:first-child th,
-table.dataTable.row-border tbody tr:first-child td, table.dataTable.display tbody tr:first-child th,
-table.dataTable.display tbody tr:first-child td {
-  border-top: none;
-}
-table.dataTable.cell-border tbody th, table.dataTable.cell-border tbody td {
-  border-top: 1px solid #ddd;
-  border-right: 1px solid #ddd;
-}
-table.dataTable.cell-border tbody tr th:first-child,
-table.dataTable.cell-border tbody tr td:first-child {
-  border-left: 1px solid #ddd;
-}
-table.dataTable.cell-border tbody tr:first-child th,
-table.dataTable.cell-border tbody tr:first-child td {
-  border-top: none;
-}
-table.dataTable.stripe tbody tr.odd, table.dataTable.display tbody tr.odd {
-  background-color: #f9f9f9;
-}
-table.dataTable.stripe tbody tr.odd.selected, table.dataTable.display tbody tr.odd.selected {
-  background-color: #abb9d3;
-}
-table.dataTable.hover tbody tr:hover,
-table.dataTable.hover tbody tr.odd:hover,
-table.dataTable.hover tbody tr.even:hover, table.dataTable.display tbody tr:hover,
-table.dataTable.display tbody tr.odd:hover,
-table.dataTable.display tbody tr.even:hover {
-  background-color: whitesmoke;
-}
-table.dataTable.hover tbody tr:hover.selected,
-table.dataTable.hover tbody tr.odd:hover.selected,
-table.dataTable.hover tbody tr.even:hover.selected, table.dataTable.display tbody tr:hover.selected,
-table.dataTable.display tbody tr.odd:hover.selected,
-table.dataTable.display tbody tr.even:hover.selected {
-  background-color: #a9b7d1;
-}
-table.dataTable.order-column tbody tr > .sorting_1,
-table.dataTable.order-column tbody tr > .sorting_2,
-table.dataTable.order-column tbody tr > .sorting_3, table.dataTable.display tbody tr > .sorting_1,
-table.dataTable.display tbody tr > .sorting_2,
-table.dataTable.display tbody tr > .sorting_3 {
-  background-color: #f9f9f9;
-}
-table.dataTable.order-column tbody tr.selected > .sorting_1,
-table.dataTable.order-column tbody tr.selected > .sorting_2,
-table.dataTable.order-column tbody tr.selected > .sorting_3, table.dataTable.display tbody tr.selected > .sorting_1,
-table.dataTable.display tbody tr.selected > .sorting_2,
-table.dataTable.display tbody tr.selected > .sorting_3 {
-  background-color: #acbad4;
-}
-table.dataTable.display tbody tr.odd > .sorting_1, table.dataTable.order-column.stripe tbody tr.odd > .sorting_1 {
-  background-color: #f1f1f1;
-}
-table.dataTable.display tbody tr.odd > .sorting_2, table.dataTable.order-column.stripe tbody tr.odd > .sorting_2 {
-  background-color: #f3f3f3;
-}
-table.dataTable.display tbody tr.odd > .sorting_3, table.dataTable.order-column.stripe tbody tr.odd > .sorting_3 {
-  background-color: whitesmoke;
-}
-table.dataTable.display tbody tr.odd.selected > .sorting_1, table.dataTable.order-column.stripe tbody tr.odd.selected > .sorting_1 {
-  background-color: #a6b3cd;
-}
-table.dataTable.display tbody tr.odd.selected > .sorting_2, table.dataTable.order-column.stripe tbody tr.odd.selected > .sorting_2 {
-  background-color: #a7b5ce;
-}
-table.dataTable.display tbody tr.odd.selected > .sorting_3, table.dataTable.order-column.stripe tbody tr.odd.selected > .sorting_3 {
-  background-color: #a9b6d0;
-}
-table.dataTable.display tbody tr.even > .sorting_1, table.dataTable.order-column.stripe tbody tr.even > .sorting_1 {
-  background-color: #f9f9f9;
-}
-table.dataTable.display tbody tr.even > .sorting_2, table.dataTable.order-column.stripe tbody tr.even > .sorting_2 {
-  background-color: #fbfbfb;
-}
-table.dataTable.display tbody tr.even > .sorting_3, table.dataTable.order-column.stripe tbody tr.even > .sorting_3 {
-  background-color: #fdfdfd;
-}
-table.dataTable.display tbody tr.even.selected > .sorting_1, table.dataTable.order-column.stripe tbody tr.even.selected > .sorting_1 {
-  background-color: #acbad4;
-}
-table.dataTable.display tbody tr.even.selected > .sorting_2, table.dataTable.order-column.stripe tbody tr.even.selected > .sorting_2 {
-  background-color: #adbbd6;
-}
-table.dataTable.display tbody tr.even.selected > .sorting_3, table.dataTable.order-column.stripe tbody tr.even.selected > .sorting_3 {
-  background-color: #afbdd8;
-}
-table.dataTable.display tbody tr:hover > .sorting_1,
-table.dataTable.display tbody tr.odd:hover > .sorting_1,
-table.dataTable.display tbody tr.even:hover > .sorting_1, table.dataTable.order-column.hover tbody tr:hover > .sorting_1,
-table.dataTable.order-column.hover tbody tr.odd:hover > .sorting_1,
-table.dataTable.order-column.hover tbody tr.even:hover > .sorting_1 {
-  background-color: #eaeaea;
-}
-table.dataTable.display tbody tr:hover > .sorting_2,
-table.dataTable.display tbody tr.odd:hover > .sorting_2,
-table.dataTable.display tbody tr.even:hover > .sorting_2, table.dataTable.order-column.hover tbody tr:hover > .sorting_2,
-table.dataTable.order-column.hover tbody tr.odd:hover > .sorting_2,
-table.dataTable.order-column.hover tbody tr.even:hover > .sorting_2 {
-  background-color: #ebebeb;
-}
-table.dataTable.display tbody tr:hover > .sorting_3,
-table.dataTable.display tbody tr.odd:hover > .sorting_3,
-table.dataTable.display tbody tr.even:hover > .sorting_3, table.dataTable.order-column.hover tbody tr:hover > .sorting_3,
-table.dataTable.order-column.hover tbody tr.odd:hover > .sorting_3,
-table.dataTable.order-column.hover tbody tr.even:hover > .sorting_3 {
-  background-color: #eeeeee;
-}
-table.dataTable.display tbody tr:hover.selected > .sorting_1,
-table.dataTable.display tbody tr.odd:hover.selected > .sorting_1,
-table.dataTable.display tbody tr.even:hover.selected > .sorting_1, table.dataTable.order-column.hover tbody tr:hover.selected > .sorting_1,
-table.dataTable.order-column.hover tbody tr.odd:hover.selected > .sorting_1,
-table.dataTable.order-column.hover tbody tr.even:hover.selected > .sorting_1 {
-  background-color: #a1aec7;
-}
-table.dataTable.display tbody tr:hover.selected > .sorting_2,
-table.dataTable.display tbody tr.odd:hover.selected > .sorting_2,
-table.dataTable.display tbody tr.even:hover.selected > .sorting_2, table.dataTable.order-column.hover tbody tr:hover.selected > .sorting_2,
-table.dataTable.order-column.hover tbody tr.odd:hover.selected > .sorting_2,
-table.dataTable.order-column.hover tbody tr.even:hover.selected > .sorting_2 {
-  background-color: #a2afc8;
-}
-table.dataTable.display tbody tr:hover.selected > .sorting_3,
-table.dataTable.display tbody tr.odd:hover.selected > .sorting_3,
-table.dataTable.display tbody tr.even:hover.selected > .sorting_3, table.dataTable.order-column.hover tbody tr:hover.selected > .sorting_3,
-table.dataTable.order-column.hover tbody tr.odd:hover.selected > .sorting_3,
-table.dataTable.order-column.hover tbody tr.even:hover.selected > .sorting_3 {
-  background-color: #a4b2cb;
-}
-table.dataTable.nowrap th, table.dataTable.nowrap td {
-  white-space: nowrap;
-}
-table.dataTable.compact thead th,
-table.dataTable.compact thead td {
-  padding: 5px 9px;
-}
-table.dataTable.compact tfoot th,
-table.dataTable.compact tfoot td {
-  padding: 5px 9px 3px 9px;
-}
-table.dataTable.compact tbody th,
-table.dataTable.compact tbody td {
-  padding: 4px 5px;
-}
-table.dataTable th.dt-left,
-table.dataTable td.dt-left {
-  text-align: left;
-}
-table.dataTable th.dt-center,
-table.dataTable td.dt-center,
-table.dataTable td.dataTables_empty {
-  text-align: center;
-}
-table.dataTable th.dt-right,
-table.dataTable td.dt-right {
-  text-align: right;
-}
-table.dataTable th.dt-justify,
-table.dataTable td.dt-justify {
-  text-align: justify;
-}
-table.dataTable th.dt-nowrap,
-table.dataTable td.dt-nowrap {
-  white-space: nowrap;
-}
-table.dataTable thead th.dt-head-left,
-table.dataTable thead td.dt-head-left,
-table.dataTable tfoot th.dt-head-left,
-table.dataTable tfoot td.dt-head-left {
-  text-align: left;
-}
-table.dataTable thead th.dt-head-center,
-table.dataTable thead td.dt-head-center,
-table.dataTable tfoot th.dt-head-center,
-table.dataTable tfoot td.dt-head-center {
-  text-align: center;
-}
-table.dataTable thead th.dt-head-right,
-table.dataTable thead td.dt-head-right,
-table.dataTable tfoot th.dt-head-right,
-table.dataTable tfoot td.dt-head-right {
-  text-align: right;
-}
-table.dataTable thead th.dt-head-justify,
-table.dataTable thead td.dt-head-justify,
-table.dataTable tfoot th.dt-head-justify,
-table.dataTable tfoot td.dt-head-justify {
-  text-align: justify;
-}
-table.dataTable thead th.dt-head-nowrap,
-table.dataTable thead td.dt-head-nowrap,
-table.dataTable tfoot th.dt-head-nowrap,
-table.dataTable tfoot td.dt-head-nowrap {
-  white-space: nowrap;
-}
-table.dataTable tbody th.dt-body-left,
-table.dataTable tbody td.dt-body-left {
-  text-align: left;
-}
-table.dataTable tbody th.dt-body-center,
-table.dataTable tbody td.dt-body-center {
-  text-align: center;
-}
-table.dataTable tbody th.dt-body-right,
-table.dataTable tbody td.dt-body-right {
-  text-align: right;
-}
-table.dataTable tbody th.dt-body-justify,
-table.dataTable tbody td.dt-body-justify {
-  text-align: justify;
-}
-table.dataTable tbody th.dt-body-nowrap,
-table.dataTable tbody td.dt-body-nowrap {
-  white-space: nowrap;
-}
-
-table.dataTable,
-table.dataTable th,
-table.dataTable td {
-  -webkit-box-sizing: content-box;
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
-}
-
-/*
- * Control feature layout
- */
-.dataTables_wrapper {
-  position: relative;
-  clear: both;
-  *zoom: 1;
-  zoom: 1;
-}
-.dataTables_wrapper .dataTables_length {
-  float: left;
-}
-.dataTables_wrapper .dataTables_filter {
-  float: right;
-  text-align: right;
-}
-.dataTables_wrapper .dataTables_filter input {
-  margin-left: 0.5em;
-}
-.dataTables_wrapper .dataTables_info {
-  clear: both;
-  float: left;
-  padding-top: 0.55em;
-}
-.dataTables_wrapper .dataTables_paginate {
-  float: right;
-  text-align: right;
-}
-.dataTables_wrapper .dataTables_paginate .fg-button {
-  box-sizing: border-box;
-  display: inline-block;
-  min-width: 1.5em;
-  padding: 0.5em;
-  margin-left: 2px;
-  text-align: center;
-  text-decoration: none !important;
-  cursor: pointer;
-  *cursor: hand;
-  color: #333 !important;
-  border: 1px solid transparent;
-}
-.dataTables_wrapper .dataTables_paginate .fg-button:active {
-  outline: none;
-}
-.dataTables_wrapper .dataTables_paginate .fg-button:first-child {
-  border-top-left-radius: 3px;
-  border-bottom-left-radius: 3px;
-}
-.dataTables_wrapper .dataTables_paginate .fg-button:last-child {
-  border-top-right-radius: 3px;
-  border-bottom-right-radius: 3px;
-}
-.dataTables_wrapper .dataTables_processing {
-  position: absolute;
-  top: 50%;
-  left: 50%;
-  width: 100%;
-  height: 40px;
-  margin-left: -50%;
-  margin-top: -25px;
-  padding-top: 20px;
-  text-align: center;
-  font-size: 1.2em;
-  background-color: white;
-  background: -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(25%, rgba(255, 255, 255, 0.9)), color-stop(75%, rgba(255, 255, 255, 0.9)), color-stop(100%, rgba(255, 255, 255, 0)));
-  /* Chrome,Safari4+ */
-  background: -webkit-linear-gradient(left, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-  /* Chrome10+,Safari5.1+ */
-  background: -moz-linear-gradient(left, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-  /* FF3.6+ */
-  background: -ms-linear-gradient(left, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-  /* IE10+ */
-  background: -o-linear-gradient(left, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-  /* Opera 11.10+ */
-  background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.9) 25%, rgba(255, 255, 255, 0.9) 75%, rgba(255, 255, 255, 0) 100%);
-  /* W3C */
-}
-.dataTables_wrapper .dataTables_length,
-.dataTables_wrapper .dataTables_filter,
-.dataTables_wrapper .dataTables_info,
-.dataTables_wrapper .dataTables_processing,
-.dataTables_wrapper .dataTables_paginate {
-  color: #333;
-}
-.dataTables_wrapper .dataTables_scroll {
-  clear: both;
-}
-.dataTables_wrapper .dataTables_scrollBody {
-  *margin-top: -1px;
-  -webkit-overflow-scrolling: touch;
-}
-.dataTables_wrapper .ui-widget-header {
-  font-weight: normal;
-}
-.dataTables_wrapper .ui-toolbar {
-  padding: 8px;
-}
-.dataTables_wrapper:after {
-  visibility: hidden;
-  display: block;
-  content: "";
-  clear: both;
-  height: 0;
-}
-
-@media screen and (max-width: 767px) {
-  .dataTables_wrapper .dataTables_length,
-  .dataTables_wrapper .dataTables_filter,
-  .dataTables_wrapper .dataTables_info,
-  .dataTables_wrapper .dataTables_paginate {
-    float: none;
-    text-align: center;
-  }
-  .dataTables_wrapper .dataTables_filter,
-  .dataTables_wrapper .dataTables_paginate {
-    margin-top: 0.5em;
-  }
-}

static/css/main.css

@@ -1,16 +1,20 @@
-body
+body {
-{
   font-family: "Helvetica Neue", "HelveticaNeue", "Helvetica", "Arial", "sans-serif";
 }
 
-#main_table_length
+#main_table_wrapper {
-{
+  margin-left: 10px;
+  margin-right: 10px;
+}
+
+#main_table {
+  width: 100%;
+}
+
+#main_table_length {
   float: left;
 }
 
-#main_table_filter
+#main_table_filter {
-{
   float: right;
 }
-
-#main_table_paginate

static/js/dataTables.bootstrap.js

@@ -1,182 +0,0 @@
-/*! DataTables Bootstrap 3 integration
- * ©2011-2015 SpryMedia Ltd - datatables.net/license
- */
-
-/**
- * DataTables integration for Bootstrap 3. This requires Bootstrap 3 and
- * DataTables 1.10 or newer.
- *
- * This file sets the defaults and adds options to DataTables to style its
- * controls using Bootstrap. See http://datatables.net/manual/styling/bootstrap
- * for further information.
- */
-(function( factory ){
-	if ( typeof define === 'function' && define.amd ) {
-		// AMD
-		define( ['jquery', 'datatables.net'], function ( $ ) {
-			return factory( $, window, document );
-		} );
-	}
-	else if ( typeof exports === 'object' ) {
-		// CommonJS
-		module.exports = function (root, $) {
-			if ( ! root ) {
-				root = window;
-			}
-
-			if ( ! $ || ! $.fn.dataTable ) {
-				// Require DataTables, which attaches to jQuery, including
-				// jQuery if needed and have a $ property so we can access the
-				// jQuery object that is used
-				$ = require('datatables.net')(root, $).$;
-			}
-
-			return factory( $, root, root.document );
-		};
-	}
-	else {
-		// Browser
-		factory( jQuery, window, document );
-	}
-}(function( $, window, document, undefined ) {
-'use strict';
-var DataTable = $.fn.dataTable;
-
-
-/* Set the defaults for DataTables initialisation */
-$.extend( true, DataTable.defaults, {
-	dom:
-		"<'row'<'col-sm-6'l><'col-sm-6'f>>" +
-		"<'row'<'col-sm-12'tr>>" +
-		"<'row'<'col-sm-5'i><'col-sm-7'p>>",
-	renderer: 'bootstrap'
-} );
-
-
-/* Default class modification */
-$.extend( DataTable.ext.classes, {
-	sWrapper:      "dataTables_wrapper form-inline dt-bootstrap",
-	sFilterInput:  "form-control input-sm",
-	sLengthSelect: "form-control input-sm",
-	sProcessing:   "dataTables_processing panel panel-default"
-} );
-
-
-/* Bootstrap paging button renderer */
-DataTable.ext.renderer.pageButton.bootstrap = function ( settings, host, idx, buttons, page, pages ) {
-	var api     = new DataTable.Api( settings );
-	var classes = settings.oClasses;
-	var lang    = settings.oLanguage.oPaginate;
-	var aria = settings.oLanguage.oAria.paginate || {};
-	var btnDisplay, btnClass, counter=0;
-
-	var attach = function( container, buttons ) {
-		var i, ien, node, button;
-		var clickHandler = function ( e ) {
-			e.preventDefault();
-			if ( !$(e.currentTarget).hasClass('disabled') && api.page() != e.data.action ) {
-				api.page( e.data.action ).draw( 'page' );
-			}
-		};
-
-		for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
-			button = buttons[i];
-
-			if ( $.isArray( button ) ) {
-				attach( container, button );
-			}
-			else {
-				btnDisplay = '';
-				btnClass = '';
-
-				switch ( button ) {
-					case 'ellipsis':
-						btnDisplay = '&#x2026;';
-						btnClass = 'disabled';
-						break;
-
-					case 'first':
-						btnDisplay = lang.sFirst;
-						btnClass = button + (page > 0 ?
-							'' : ' disabled');
-						break;
-
-					case 'previous':
-						btnDisplay = lang.sPrevious;
-						btnClass = button + (page > 0 ?
-							'' : ' disabled');
-						break;
-
-					case 'next':
-						btnDisplay = lang.sNext;
-						btnClass = button + (page < pages-1 ?
-							'' : ' disabled');
-						break;
-
-					case 'last':
-						btnDisplay = lang.sLast;
-						btnClass = button + (page < pages-1 ?
-							'' : ' disabled');
-						break;
-
-					default:
-						btnDisplay = button + 1;
-						btnClass = page === button ?
-							'active' : '';
-						break;
-				}
-
-				if ( btnDisplay ) {
-					node = $('<li>', {
-							'class': classes.sPageButton+' '+btnClass,
-							'id': idx === 0 && typeof button === 'string' ?
-								settings.sTableId +'_'+ button :
-								null
-						} )
-						.append( $('<a>', {
-								'href': '#',
-								'aria-controls': settings.sTableId,
-								'aria-label': aria[ button ],
-								'data-dt-idx': counter,
-								'tabindex': settings.iTabIndex
-							} )
-							.html( btnDisplay )
-						)
-						.appendTo( container );
-
-					settings.oApi._fnBindAction(
-						node, {action: button}, clickHandler
-					);
-
-					counter++;
-				}
-			}
-		}
-	};
-
-	// IE9 throws an 'unknown error' if document.activeElement is used
-	// inside an iframe or frame. 
-	var activeEl;
-
-	try {
-		// Because this approach is destroying and recreating the paging
-		// elements, focus is lost on the select button which is bad for
-		// accessibility. So we want to restore focus once the draw has
-		// completed
-		activeEl = $(host).find(document.activeElement).data('dt-idx');
-	}
-	catch (e) {}
-
-	attach(
-		$(host).empty().html('<ul class="pagination"/>').children('ul'),
-		buttons
-	);
-
-	if ( activeEl !== undefined ) {
-		$(host).find( '[data-dt-idx='+activeEl+']' ).focus();
-	}
-};
-
-
-return DataTable;
-}));

static/js/dataTables.dataTables.js

@@ -1,37 +0,0 @@
-/*! DataTables styling integration
- * ©2018 SpryMedia Ltd - datatables.net/license
- */
-
-(function( factory ){
-	if ( typeof define === 'function' && define.amd ) {
-		// AMD
-		define( ['jquery', 'datatables.net'], function ( $ ) {
-			return factory( $, window, document );
-		} );
-	}
-	else if ( typeof exports === 'object' ) {
-		// CommonJS
-		module.exports = function (root, $) {
-			if ( ! root ) {
-				root = window;
-			}
-
-			if ( ! $ || ! $.fn.dataTable ) {
-				// Require DataTables, which attaches to jQuery, including
-				// jQuery if needed and have a $ property so we can access the
-				// jQuery object that is used
-				$ = require('datatables.net')(root, $).$;
-			}
-
-			return factory( $, root, root.document );
-		};
-	}
-	else {
-		// Browser
-		factory( jQuery, window, document );
-	}
-}(function( $, window, document, undefined ) {
-
-return $.fn.dataTable;
-
-}));

static/js/dataTables.foundation.js

@@ -1,174 +0,0 @@
-/*! DataTables Foundation integration
- * ©2011-2015 SpryMedia Ltd - datatables.net/license
- */
-
-/**
- * DataTables integration for Foundation. This requires Foundation 5 and
- * DataTables 1.10 or newer.
- *
- * This file sets the defaults and adds options to DataTables to style its
- * controls using Foundation. See http://datatables.net/manual/styling/foundation
- * for further information.
- */
-(function( factory ){
-	if ( typeof define === 'function' && define.amd ) {
-		// AMD
-		define( ['jquery', 'datatables.net'], function ( $ ) {
-			return factory( $, window, document );
-		} );
-	}
-	else if ( typeof exports === 'object' ) {
-		// CommonJS
-		module.exports = function (root, $) {
-			if ( ! root ) {
-				root = window;
-			}
-
-			if ( ! $ || ! $.fn.dataTable ) {
-				$ = require('datatables.net')(root, $).$;
-			}
-
-			return factory( $, root, root.document );
-		};
-	}
-	else {
-		// Browser
-		factory( jQuery, window, document );
-	}
-}(function( $, window, document, undefined ) {
-'use strict';
-var DataTable = $.fn.dataTable;
-
-// Detect Foundation 5 / 6 as they have different element and class requirements
-var meta = $('<meta class="foundation-mq"/>').appendTo('head');
-DataTable.ext.foundationVersion = meta.css('font-family').match(/small|medium|large/) ? 6 : 5;
-meta.remove();
-
-
-$.extend( DataTable.ext.classes, {
-	sWrapper:    "dataTables_wrapper dt-foundation",
-	sProcessing: "dataTables_processing panel callout"
-} );
-
-
-/* Set the defaults for DataTables initialisation */
-$.extend( true, DataTable.defaults, {
-	dom:
-		"<'row grid-x'<'small-6 columns cell'l><'small-6 columns cell'f>r>"+
-		"t"+
-		"<'row grid-x'<'small-6 columns cell'i><'small-6 columns cell'p>>",
-	renderer: 'foundation'
-} );
-
-
-/* Page button renderer */
-DataTable.ext.renderer.pageButton.foundation = function ( settings, host, idx, buttons, page, pages ) {
-	var api = new DataTable.Api( settings );
-	var classes = settings.oClasses;
-	var lang = settings.oLanguage.oPaginate;
-	var aria = settings.oLanguage.oAria.paginate || {};
-	var btnDisplay, btnClass;
-	var tag;
-	var v5 = DataTable.ext.foundationVersion === 5;
-
-	var attach = function( container, buttons ) {
-		var i, ien, node, button;
-		var clickHandler = function ( e ) {
-			e.preventDefault();
-			if ( !$(e.currentTarget).hasClass('unavailable') && api.page() != e.data.action ) {
-				api.page( e.data.action ).draw( 'page' );
-			}
-		};
-
-		for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
-			button = buttons[i];
-
-			if ( $.isArray( button ) ) {
-				attach( container, button );
-			}
-			else {
-				btnDisplay = '';
-				btnClass = '';
-				tag = null;
-
-				switch ( button ) {
-					case 'ellipsis':
-						btnDisplay = '&#x2026;';
-						btnClass = 'unavailable disabled';
-						tag = null;
-						break;
-
-					case 'first':
-						btnDisplay = lang.sFirst;
-						btnClass = button + (page > 0 ?
-							'' : ' unavailable disabled');
-						tag = page > 0 ? 'a' : null;
-						break;
-
-					case 'previous':
-						btnDisplay = lang.sPrevious;
-						btnClass = button + (page > 0 ?
-							'' : ' unavailable disabled');
-						tag = page > 0 ? 'a' : null;
-						break;
-
-					case 'next':
-						btnDisplay = lang.sNext;
-						btnClass = button + (page < pages-1 ?
-							'' : ' unavailable disabled');
-						tag = page < pages-1 ? 'a' : null;
-						break;
-
-					case 'last':
-						btnDisplay = lang.sLast;
-						btnClass = button + (page < pages-1 ?
-							'' : ' unavailable disabled');
-						tag = page < pages-1 ? 'a' : null;
-						break;
-
-					default:
-						btnDisplay = button + 1;
-						btnClass = page === button ?
-							'current' : '';
-						tag = page === button ?
-							null : 'a';
-						break;
-				}
-
-				if ( v5 ) {
-					tag = 'a';
-				}
-
-				if ( btnDisplay ) {
-					node = $('<li>', {
-							'class': classes.sPageButton+' '+btnClass,
-							'aria-controls': settings.sTableId,
-							'aria-label': aria[ button ],
-							'tabindex': settings.iTabIndex,
-							'id': idx === 0 && typeof button === 'string' ?
-								settings.sTableId +'_'+ button :
-								null
-						} )
-						.append( tag ?
-							$('<'+tag+'/>', {'href': '#'} ).html( btnDisplay ) :
-							btnDisplay
-						)
-						.appendTo( container );
-
-					settings.oApi._fnBindAction(
-						node, {action: button}, clickHandler
-					);
-				}
-			}
-		}
-	};
-
-	attach(
-		$(host).empty().html('<ul class="pagination"/>').children('ul'),
-		buttons
-	);
-};
-
-
-return DataTable;
-}));

static/js/dataTables.jqueryui.js

@@ -1,164 +0,0 @@
-/*! DataTables jQuery UI integration
- * ©2011-2014 SpryMedia Ltd - datatables.net/license
- */
-
-/**
- * DataTables integration for jQuery UI. This requires jQuery UI and
- * DataTables 1.10 or newer.
- *
- * This file sets the defaults and adds options to DataTables to style its
- * controls using jQuery UI. See http://datatables.net/manual/styling/jqueryui
- * for further information.
- */
-(function( factory ){
-	if ( typeof define === 'function' && define.amd ) {
-		// AMD
-		define( ['jquery', 'datatables.net'], function ( $ ) {
-			return factory( $, window, document );
-		} );
-	}
-	else if ( typeof exports === 'object' ) {
-		// CommonJS
-		module.exports = function (root, $) {
-			if ( ! root ) {
-				root = window;
-			}
-
-			if ( ! $ || ! $.fn.dataTable ) {
-				$ = require('datatables.net')(root, $).$;
-			}
-
-			return factory( $, root, root.document );
-		};
-	}
-	else {
-		// Browser
-		factory( jQuery, window, document );
-	}
-}(function( $, window, document, undefined ) {
-'use strict';
-var DataTable = $.fn.dataTable;
-
-
-var sort_prefix = 'css_right ui-icon ui-icon-';
-var toolbar_prefix = 'fg-toolbar ui-toolbar ui-widget-header ui-helper-clearfix ui-corner-';
-
-/* Set the defaults for DataTables initialisation */
-$.extend( true, DataTable.defaults, {
-	dom:
-		'<"'+toolbar_prefix+'tl ui-corner-tr"lfr>'+
-		't'+
-		'<"'+toolbar_prefix+'bl ui-corner-br"ip>',
-	renderer: 'jqueryui'
-} );
-
-
-$.extend( DataTable.ext.classes, {
-	"sWrapper":            "dataTables_wrapper dt-jqueryui",
-
-	/* Full numbers paging buttons */
-	"sPageButton":         "fg-button ui-button ui-state-default",
-	"sPageButtonActive":   "ui-state-disabled",
-	"sPageButtonDisabled": "ui-state-disabled",
-
-	/* Features */
-	"sPaging": "dataTables_paginate fg-buttonset ui-buttonset fg-buttonset-multi "+
-		"ui-buttonset-multi paging_", /* Note that the type is postfixed */
-
-	/* Sorting */
-	"sSortAsc":            "ui-state-default sorting_asc",
-	"sSortDesc":           "ui-state-default sorting_desc",
-	"sSortable":           "ui-state-default sorting",
-	"sSortableAsc":        "ui-state-default sorting_asc_disabled",
-	"sSortableDesc":       "ui-state-default sorting_desc_disabled",
-	"sSortableNone":       "ui-state-default sorting_disabled",
-	"sSortIcon":           "DataTables_sort_icon",
-
-	/* Scrolling */
-	"sScrollHead": "dataTables_scrollHead "+"ui-state-default",
-	"sScrollFoot": "dataTables_scrollFoot "+"ui-state-default",
-
-	/* Misc */
-	"sHeaderTH":  "ui-state-default",
-	"sFooterTH":  "ui-state-default"
-} );
-
-
-DataTable.ext.renderer.header.jqueryui = function ( settings, cell, column, classes ) {
-	// Calculate what the unsorted class should be
-	var noSortAppliedClass = sort_prefix+'caret-2-n-s';
-	var asc = $.inArray('asc', column.asSorting) !== -1;
-	var desc = $.inArray('desc', column.asSorting) !== -1;
-
-	if ( !column.bSortable || (!asc && !desc) ) {
-		noSortAppliedClass = '';
-	}
-	else if ( asc && !desc ) {
-		noSortAppliedClass = sort_prefix+'caret-1-n';
-	}
-	else if ( !asc && desc ) {
-		noSortAppliedClass = sort_prefix+'caret-1-s';
-	}
-
-	// Setup the DOM structure
-	$('<div/>')
-		.addClass( 'DataTables_sort_wrapper' )
-		.append( cell.contents() )
-		.append( $('<span/>')
-			.addClass( classes.sSortIcon+' '+noSortAppliedClass )
-		)
-		.appendTo( cell );
-
-	// Attach a sort listener to update on sort
-	$(settings.nTable).on( 'order.dt', function ( e, ctx, sorting, columns ) {
-		if ( settings !== ctx ) {
-			return;
-		}
-
-		var colIdx = column.idx;
-
-		cell
-			.removeClass( classes.sSortAsc +" "+classes.sSortDesc )
-			.addClass( columns[ colIdx ] == 'asc' ?
-				classes.sSortAsc : columns[ colIdx ] == 'desc' ?
-					classes.sSortDesc :
-					column.sSortingClass
-			);
-
-		cell
-			.find( 'span.'+classes.sSortIcon )
-			.removeClass(
-				sort_prefix+'triangle-1-n' +" "+
-				sort_prefix+'triangle-1-s' +" "+
-				sort_prefix+'caret-2-n-s' +" "+
-				sort_prefix+'caret-1-n' +" "+
-				sort_prefix+'caret-1-s'
-			)
-			.addClass( columns[ colIdx ] == 'asc' ?
-				sort_prefix+'triangle-1-n' : columns[ colIdx ] == 'desc' ?
-					sort_prefix+'triangle-1-s' :
-					noSortAppliedClass
-			);
-	} );
-};
-
-
-/*
- * TableTools jQuery UI compatibility
- * Required TableTools 2.1+
- */
-if ( DataTable.TableTools ) {
-	$.extend( true, DataTable.TableTools.classes, {
-		"container": "DTTT_container ui-buttonset ui-buttonset-multi",
-		"buttons": {
-			"normal": "DTTT_button ui-button ui-state-default"
-		},
-		"collection": {
-			"container": "DTTT_collection ui-buttonset ui-buttonset-multi"
-		}
-	} );
-}
-
-
-return DataTable;
-}));

static/js/dataTables.material.js

@@ -1,250 +0,0 @@
-/*! DataTables Bootstrap 3 integration
- * ©2011-2015 SpryMedia Ltd - datatables.net/license
- */
-
-/**
- * DataTables integration for Bootstrap 3. This requires Bootstrap 3 and
- * DataTables 1.10 or newer.
- *
- * This file sets the defaults and adds options to DataTables to style its
- * controls using Bootstrap. See http://datatables.net/manual/styling/bootstrap
- * for further information.
- */
-(function( factory ){
-	if ( typeof define === 'function' && define.amd ) {
-		// AMD
-		define( ['jquery', 'datatables.net'], function ( $ ) {
-			return factory( $, window, document );
-		} );
-	}
-	else if ( typeof exports === 'object' ) {
-		// CommonJS
-		module.exports = function (root, $) {
-			if ( ! root ) {
-				root = window;
-			}
-
-			if ( ! $ || ! $.fn.dataTable ) {
-				// Require DataTables, which attaches to jQuery, including
-				// jQuery if needed and have a $ property so we can access the
-				// jQuery object that is used
-				$ = require('datatables.net')(root, $).$;
-			}
-
-			return factory( $, root, root.document );
-		};
-	}
-	else {
-		// Browser
-		factory( jQuery, window, document );
-	}
-}(function( $, window, document, undefined ) {
-'use strict';
-var DataTable = $.fn.dataTable;
-
-
-/* Set the defaults for DataTables initialisation */
-$.extend( true, DataTable.defaults, {
-	dom:
-		"<'mdc-layout-grid'<'mdc-layout-grid__inner'"+
-			"<'mdc-cell mdc-layout-grid__cell--span-6'l>"+
-			"<'mdc-cell mdc-layout-grid__cell--span-6'f>"+
-		">>"+
-		"<'mdc-layout-grid dt-table'<'mdc-layout-grid__inner'"+
-			"<'mdc-cell mdc-layout-grid__cell--span-12'tr>"+
-		">>"+
-		"<'mdc-layout-grid'<'mdc-layout-grid__inner'"+
-			"<'mdc-cell mdc-layout-grid__cell--span-4'i>"+
-			"<'mdc-cell mdc-layout-grid__cell--span-8'p>"+
-		">>",
-	renderer: 'material'
-} );
-
-
-/* Default class modification */
-$.extend( DataTable.ext.classes, {
-	sTable: 		"mdc-data-table__table",
-	sHeaderTH:		"mdc-data-table__header-row",
-	sWrapper:       "dataTables_wrapper form-inline dt-material mdc-data-table",
-	sFilterInput:   "form-control input-sm",
-	sLengthSelect:  "form-control input-sm",
-	sProcessing:    "dataTables_processing panel panel-default"
-} );
-
-
-/* Bootstrap paging button renderer */
-DataTable.ext.renderer.pageButton.material = function ( settings, host, idx, buttons, page, pages ) {
-	var api     = new DataTable.Api( settings );
-	var classes = settings.oClasses;
-	var lang    = settings.oLanguage.oPaginate;
-	var aria = settings.oLanguage.oAria.paginate || {};
-	var btnDisplay, btnClass, counter=0;
-
-	var attach = function( container, buttons ) {
-		var i, ien, node, button, disabled, active;
-		var clickHandler = function ( e ) {
-			e.preventDefault();
-			if ( !$(e.currentTarget).hasClass('disabled') && api.page() != e.data.action ) {
-				api.page( e.data.action ).draw( 'page' );
-			}
-		};
-
-		for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
-			button = buttons[i];
-
-			if ( $.isArray( button ) ) {
-				attach( container, button );
-			}
-			else {
-				btnDisplay = '';
-				active = false;
-
-				switch ( button ) {
-					case 'ellipsis':
-						btnDisplay = '&#x2026;';
-						btnClass = 'disabled';
-						break;
-
-					case 'first':
-						btnDisplay = lang.sFirst;
-						btnClass = button + (page > 0 ?
-							'' : ' disabled');
-						break;
-
-					case 'previous':
-						btnDisplay = lang.sPrevious;
-						btnClass = button + (page > 0 ?
-							'' : ' disabled');
-						break;
-
-					case 'next':
-						btnDisplay = lang.sNext;
-						btnClass = button + (page < pages-1 ?
-							'' : ' disabled');
-						break;
-
-					case 'last':
-						btnDisplay = lang.sLast;
-						btnClass = button + (page < pages-1 ?
-							'' : ' disabled');
-						break;
-
-					default:
-						btnDisplay = button + 1;
-						btnClass = '';
-						active = page === button;
-						break;
-				}
-
-				if ( active ) {
-					btnClass += ' mdc-button--raised mdc-button--colored';
-				}
-
-				if ( btnDisplay ) {
-					node = $('<button>', {
-							'class': 'mdc-button '+btnClass,
-							'id': idx === 0 && typeof button === 'string' ?
-								settings.sTableId +'_'+ button :
-								null,
-							'aria-controls': settings.sTableId,
-							'aria-label': aria[ button ],
-							'data-dt-idx': counter,
-							'tabindex': settings.iTabIndex,
-							'disabled': btnClass.indexOf('disabled') !== -1
-						} )
-						.html( btnDisplay )
-						.appendTo( container );
-
-					settings.oApi._fnBindAction(
-						node, {action: button}, clickHandler
-					);
-
-					counter++;
-				}
-			}
-		}
-	};
-
-	// IE9 throws an 'unknown error' if document.activeElement is used
-	// inside an iframe or frame. 
-	var activeEl;
-
-	try {
-		// Because this approach is destroying and recreating the paging
-		// elements, focus is lost on the select button which is bad for
-		// accessibility. So we want to restore focus once the draw has
-		// completed
-		activeEl = $(host).find(document.activeElement).data('dt-idx');
-	}
-	catch (e) {}
-
-	attach(
-		$(host).empty().html('<div class="pagination"/>').children(),
-		buttons
-	);
-
-	if ( activeEl !== undefined ) {
-		$(host).find( '[data-dt-idx='+activeEl+']' ).focus();
-	}
-};
-
-$(document).on('init.dt', function(e, ctx) {
-	if (e.namespace !== 'dt') {
-		return;
-	}
-
-	var api = new $.fn.dataTable.Api(ctx);
-
-	applyFormatting();
-})
-
-$(document).on('draw.dt', function(e, ctx) {
-	if (e.namespace !== 'dt') {
-		return;
-	}
-
-	var api = new $.fn.dataTable.Api(ctx);
-
-	applyFormatting();
-})
-
-function applyFormatting(){
-	var kid = $('table.mdc-data-table__table').children();
-	for(var i = 0; i < kid.length; i++){
-		if(kid[i].tagName === 'THEAD'){
-			var rows = $(kid[i]).children();
-			console.log(rows)
-			for(var j = 0; j < rows.length; j++){
-				if (rows[j].tagName === 'TR') {
-					$(rows[j]).addClass('mdc-data-table__header-row')
-					var ths = $(rows[j]).children();
-					for(var k = 0; k < ths.length; k++) {
-						if (ths[k].tagName === 'TH') {
-							$(ths[k]).addClass('mdc-data-table__header-cell')
-						}
-					}
-				}
-			}
-		}
-		else if(kid[i].tagName === 'TBODY'){
-			$(kid[i]).addClass('mdc-data-table__content')
-			var rows = $(kid[i]).children();
-			for(var j = 0; j < rows.length; j++){
-				if (rows[j].tagName === 'TR') {
-					$(rows[j]).addClass('mdc-data-table__row')
-					var ths = $(rows[j]).children();
-					for(var k = 0; k < ths.length; k++) {
-						if (ths[k].tagName === 'TD') {
-							$(ths[k]).addClass('mdc-data-table__cell')
-						}
-					}
-				}
-			}
-		}
-	}
-	console.log(kid)
-}
-
-
-return DataTable;
-}));

static/js/dataTables.semanticui.js

@@ -1,212 +0,0 @@
-/*! DataTables Bootstrap 3 integration
- * ©2011-2015 SpryMedia Ltd - datatables.net/license
- */
-
-/**
- * DataTables integration for Bootstrap 3. This requires Bootstrap 3 and
- * DataTables 1.10 or newer.
- *
- * This file sets the defaults and adds options to DataTables to style its
- * controls using Bootstrap. See http://datatables.net/manual/styling/bootstrap
- * for further information.
- */
-(function( factory ){
-	if ( typeof define === 'function' && define.amd ) {
-		// AMD
-		define( ['jquery', 'datatables.net'], function ( $ ) {
-			return factory( $, window, document );
-		} );
-	}
-	else if ( typeof exports === 'object' ) {
-		// CommonJS
-		module.exports = function (root, $) {
-			if ( ! root ) {
-				root = window;
-			}
-
-			if ( ! $ || ! $.fn.dataTable ) {
-				// Require DataTables, which attaches to jQuery, including
-				// jQuery if needed and have a $ property so we can access the
-				// jQuery object that is used
-				$ = require('datatables.net')(root, $).$;
-			}
-
-			return factory( $, root, root.document );
-		};
-	}
-	else {
-		// Browser
-		factory( jQuery, window, document );
-	}
-}(function( $, window, document, undefined ) {
-'use strict';
-var DataTable = $.fn.dataTable;
-
-
-/* Set the defaults for DataTables initialisation */
-$.extend( true, DataTable.defaults, {
-	dom:
-		"<'ui stackable grid'"+
-			"<'row'"+
-				"<'eight wide column'l>"+
-				"<'right aligned eight wide column'f>"+
-			">"+
-			"<'row dt-table'"+
-				"<'sixteen wide column'tr>"+
-			">"+
-			"<'row'"+
-				"<'seven wide column'i>"+
-				"<'right aligned nine wide column'p>"+
-			">"+
-		">",
-	renderer: 'semanticUI'
-} );
-
-
-/* Default class modification */
-$.extend( DataTable.ext.classes, {
-	sWrapper:      "dataTables_wrapper dt-semanticUI",
-	sFilter:       "dataTables_filter ui input",
-	sProcessing:   "dataTables_processing ui segment",
-	sPageButton:   "paginate_button item"
-} );
-
-
-/* Bootstrap paging button renderer */
-DataTable.ext.renderer.pageButton.semanticUI = function ( settings, host, idx, buttons, page, pages ) {
-	var api     = new DataTable.Api( settings );
-	var classes = settings.oClasses;
-	var lang    = settings.oLanguage.oPaginate;
-	var aria = settings.oLanguage.oAria.paginate || {};
-	var btnDisplay, btnClass, counter=0;
-
-	var attach = function( container, buttons ) {
-		var i, ien, node, button;
-		var clickHandler = function ( e ) {
-			e.preventDefault();
-			if ( !$(e.currentTarget).hasClass('disabled') && api.page() != e.data.action ) {
-				api.page( e.data.action ).draw( 'page' );
-			}
-		};
-
-		for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
-			button = buttons[i];
-
-			if ( $.isArray( button ) ) {
-				attach( container, button );
-			}
-			else {
-				btnDisplay = '';
-				btnClass = '';
-
-				switch ( button ) {
-					case 'ellipsis':
-						btnDisplay = '&#x2026;';
-						btnClass = 'disabled';
-						break;
-
-					case 'first':
-						btnDisplay = lang.sFirst;
-						btnClass = button + (page > 0 ?
-							'' : ' disabled');
-						break;
-
-					case 'previous':
-						btnDisplay = lang.sPrevious;
-						btnClass = button + (page > 0 ?
-							'' : ' disabled');
-						break;
-
-					case 'next':
-						btnDisplay = lang.sNext;
-						btnClass = button + (page < pages-1 ?
-							'' : ' disabled');
-						break;
-
-					case 'last':
-						btnDisplay = lang.sLast;
-						btnClass = button + (page < pages-1 ?
-							'' : ' disabled');
-						break;
-
-					default:
-						btnDisplay = button + 1;
-						btnClass = page === button ?
-							'active' : '';
-						break;
-				}
-
-				var tag = btnClass.indexOf( 'disabled' ) === -1 ?
-					'a' :
-					'div';
-
-				if ( btnDisplay ) {
-					node = $('<'+tag+'>', {
-							'class': classes.sPageButton+' '+btnClass,
-							'id': idx === 0 && typeof button === 'string' ?
-								settings.sTableId +'_'+ button :
-								null,
-							'href': '#',
-							'aria-controls': settings.sTableId,
-							'aria-label': aria[ button ],
-							'data-dt-idx': counter,
-							'tabindex': settings.iTabIndex
-						} )
-						.html( btnDisplay )
-						.appendTo( container );
-
-					settings.oApi._fnBindAction(
-						node, {action: button}, clickHandler
-					);
-
-					counter++;
-				}
-			}
-		}
-	};
-
-	// IE9 throws an 'unknown error' if document.activeElement is used
-	// inside an iframe or frame. 
-	var activeEl;
-
-	try {
-		// Because this approach is destroying and recreating the paging
-		// elements, focus is lost on the select button which is bad for
-		// accessibility. So we want to restore focus once the draw has
-		// completed
-		activeEl = $(host).find(document.activeElement).data('dt-idx');
-	}
-	catch (e) {}
-
-	attach(
-		$(host).empty().html('<div class="ui stackable pagination menu"/>').children(),
-		buttons
-	);
-
-	if ( activeEl !== undefined ) {
-		$(host).find( '[data-dt-idx='+activeEl+']' ).focus();
-	}
-};
-
-
-// Javascript enhancements on table initialisation
-$(document).on( 'init.dt', function (e, ctx) {
-	if ( e.namespace !== 'dt' ) {
-		return;
-	}
-
-	var api = new $.fn.dataTable.Api( ctx );
-
-	// Length menu drop down
-	if ( $.fn.dropdown ) {
-		$( 'div.dataTables_length select', api.table().container() ).dropdown();
-	}
-
-	// Filtering input
-	$( 'div.dataTables_filter.ui.input', api.table().container() ).removeClass('input').addClass('form');
-	$( 'div.dataTables_filter input', api.table().container() ).wrap( '<span class="ui input" />' );
-} );
-
-
-return DataTable;
-}));

static/js/dataTables.uikit.js

@@ -1,176 +0,0 @@
-/*! DataTables UIkit 3 integration
- */
-
-/**
- * This is a tech preview of UIKit integration with DataTables.
- */
-(function( factory ){
-	if ( typeof define === 'function' && define.amd ) {
-		// AMD
-		define( ['jquery', 'datatables.net'], function ( $ ) {
-			return factory( $, window, document );
-		} );
-	}
-	else if ( typeof exports === 'object' ) {
-		// CommonJS
-		module.exports = function (root, $) {
-			if ( ! root ) {
-				root = window;
-			}
-
-			if ( ! $ || ! $.fn.dataTable ) {
-				// Require DataTables, which attaches to jQuery, including
-				// jQuery if needed and have a $ property so we can access the
-				// jQuery object that is used
-				$ = require('datatables.net')(root, $).$;
-			}
-
-			return factory( $, root, root.document );
-		};
-	}
-	else {
-		// Browser
-		factory( jQuery, window, document );
-	}
-}(function( $, window, document, undefined ) {
-'use strict';
-var DataTable = $.fn.dataTable;
-
-
-/* Set the defaults for DataTables initialisation */
-$.extend( true, DataTable.defaults, {
-	dom:
-		"<'row uk-grid'<'uk-width-1-2'l><'uk-width-1-2'f>>" +
-		"<'row uk-grid dt-merge-grid'<'uk-width-1-1'tr>>" +
-		"<'row uk-grid dt-merge-grid'<'uk-width-2-5'i><'uk-width-3-5'p>>",
-	renderer: 'uikit'
-} );
-
-
-/* Default class modification */
-$.extend( DataTable.ext.classes, {
-	sWrapper:      "dataTables_wrapper uk-form dt-uikit",
-	sFilterInput:  "uk-form-small uk-input",
-	sLengthSelect: "uk-form-small uk-select",
-	sProcessing:   "dataTables_processing uk-panel"
-} );
-
-
-/* UIkit paging button renderer */
-DataTable.ext.renderer.pageButton.uikit = function ( settings, host, idx, buttons, page, pages ) {
-	var api     = new DataTable.Api( settings );
-	var classes = settings.oClasses;
-	var lang    = settings.oLanguage.oPaginate;
-	var aria = settings.oLanguage.oAria.paginate || {};
-	var btnDisplay, btnClass, counter=0;
-
-	var attach = function( container, buttons ) {
-		var i, ien, node, button;
-		var clickHandler = function ( e ) {
-			e.preventDefault();
-			if ( !$(e.currentTarget).hasClass('disabled') && api.page() != e.data.action ) {
-				api.page( e.data.action ).draw( 'page' );
-			}
-		};
-
-		for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
-			button = buttons[i];
-
-			if ( $.isArray( button ) ) {
-				attach( container, button );
-			}
-			else {
-				btnDisplay = '';
-				btnClass = '';
-
-				switch ( button ) {
-					case 'ellipsis':
-						btnDisplay = '<i class="uk-icon-ellipsis-h"></i>';
-						btnClass = 'uk-disabled disabled';
-						break;
-
-					case 'first':
-						btnDisplay = '<i class="uk-icon-angle-double-left"></i> ' + lang.sFirst;
-						btnClass = (page > 0 ?
-							'' : ' uk-disabled disabled');
-						break;
-
-					case 'previous':
-						btnDisplay = '<i class="uk-icon-angle-left"></i> ' + lang.sPrevious;
-						btnClass = (page > 0 ?
-							'' : 'uk-disabled disabled');
-						break;
-
-					case 'next':
-						btnDisplay = lang.sNext + ' <i class="uk-icon-angle-right"></i>';
-						btnClass = (page < pages-1 ?
-							'' : 'uk-disabled disabled');
-						break;
-
-					case 'last':
-						btnDisplay = lang.sLast + ' <i class="uk-icon-angle-double-right"></i>';
-						btnClass = (page < pages-1 ?
-							'' : ' uk-disabled disabled');
-						break;
-
-					default:
-						btnDisplay = button + 1;
-						btnClass = page === button ?
-							'uk-active' : '';
-						break;
-				}
-
-				if ( btnDisplay ) {
-					node = $('<li>', {
-							'class': classes.sPageButton+' '+btnClass,
-							'id': idx === 0 && typeof button === 'string' ?
-								settings.sTableId +'_'+ button :
-								null
-						} )
-						.append( $(( -1 != btnClass.indexOf('disabled') || -1 != btnClass.indexOf('active') ) ? '<span>' : '<a>', {
-								'href': '#',
-								'aria-controls': settings.sTableId,
-								'aria-label': aria[ button ],
-								'data-dt-idx': counter,
-								'tabindex': settings.iTabIndex
-							} )
-							.html( btnDisplay )
-						)
-						.appendTo( container );
-
-					settings.oApi._fnBindAction(
-						node, {action: button}, clickHandler
-					);
-
-					counter++;
-				}
-			}
-		}
-	};
-
-	// IE9 throws an 'unknown error' if document.activeElement is used
-	// inside an iframe or frame. 
-	var activeEl;
-
-	try {
-		// Because this approach is destroying and recreating the paging
-		// elements, focus is lost on the select button which is bad for
-		// accessibility. So we want to restore focus once the draw has
-		// completed
-		activeEl = $(host).find(document.activeElement).data('dt-idx');
-	}
-	catch (e) {}
-
-	attach(
-		$(host).empty().html('<ul class="uk-pagination uk-pagination-right uk-flex-right"/>').children('ul'),
-		buttons
-	);
-
-	if ( activeEl ) {
-		$(host).find( '[data-dt-idx='+activeEl+']' ).focus();
-	}
-};
-
-
-return DataTable;
-}));

static/js/functions.js

@@ -1,14 +1,3 @@
 function export_frs() {
-    var w = window.location.href = "/export_frs.csv";
+    window.location.href = "/export_frs.csv";
 }
-
-new Vue({
-    el: '#countries',
-    data: {
-        selected: "France",
-        options: [{
-            text: 'France',
-            value: 'france'
-        }, ]
-    }
-})

templates/index.html

@@ -1,29 +1,25 @@
+<!DOCTYPE html>
 <html>
 
 <head>
+  <title>QRZ FRS users database</title>
+  <link rel="icon" href="static/images/favicon.ico"/>
   <link rel="stylesheet" type="text/css" href="static/css/main.css" media="screen">
-  <link rel="stylesheet" type="text/css" href="static/css/font-awesome/all.css">
   <link rel="stylesheet" type="text/css" href="static/css/bootstrap.css">
   <link rel="stylesheet" type="text/css" href="static/css/dataTables.bootstrap4.min.css">
-  <link rel="stylesheet" type="text/css" href="static/css/responsive.dataTables.min.css">
-  <link rel="stylesheet" type="text/css" href="static/css/rowReorder.dataTables.min.css">
 
-
+  <script src="static/js/jquery.js"></script>
-  <script type="text/javascript" src="static/js/jquery.js"></script>
+  <script src="static/js/jquery.dataTables.js"></script>
-  <script type="text/javascript" src="static/js/jquery.dataTables.min.js"></script>
+  <script src="static/js/dataTables.bootstrap4.min.js"></script>
-  <script type="text/javascript" src="static/js/bootstrap.min.js"></script>
+  <script src="static/js/datatable.js"></script>
-  <script type="text/javascript" src="static/js/dataTables.bootstrap4.min.js"></script>
+  <script src="static/js/functions.js"></script>
-  <script type="text/javascript" src="static/js/axios.min.js"></script>
-  <script type="text/javascript" src="static/js/vue.min.js"></script>
-  <script type="text/javascript" src="static/js/datatable.min.js"></script>
-  <script type="text/javascript" src="static/js/functions.js"></script>
 </head>
 
 <body>
   <h1 class="display-3">QRZ FRS users database</h1>
   <p>Indexed mirror of <a href="http://groupe-frs.hamstation.eu">http://groupe-frs.hamstation.eu</a> list of users</p>
   <div>
-    <table id="main_table" class="display table table-hover">
+    <table id="main_table" class="display table table-hover" style="width: 100%;">
       <thead class="thead-dark">
         <tr>
           <td>QRZ</td>
@@ -39,11 +35,6 @@
     </table>
   </div>
   <div>
-    <!--<select id="countries" v-model="selected">
-      <option v-for="option in options" v-bind:value="option.value">
-        {{ "{{ option.text }}" }}
-      </option>
-    </select>-->
     <input type="button" value="Export CSV" onclick="export_frs()">
   </div>
 </body>

utils/main.go

@@ -8,5 +8,5 @@ import (
 // Usage displays possible arguments
 func Usage() {
 	flag.PrintDefaults()
-	os.Exit(1)
+	os.Exit(0)
 }

vendor/filippo.io/edwards25519/README.md

@@ -0,0 +1,14 @@
+# filippo.io/edwards25519
+
+```
+import "filippo.io/edwards25519"
+```
+
+This library implements the edwards25519 elliptic curve, exposing the necessary APIs to build a wide array of higher-level primitives.
+Read the docs at [pkg.go.dev/filippo.io/edwards25519](https://pkg.go.dev/filippo.io/edwards25519).
+
+The code is originally derived from Adam Langley's internal implementation in the Go standard library, and includes George Tankersley's [performance improvements](https://golang.org/cl/71950). It was then further developed by Henry de Valence for use in ristretto255, and was finally [merged back into the Go standard library](https://golang.org/cl/276272) as of Go 1.17. It now tracks the upstream codebase and extends it with additional functionality.
+
+Most users don't need this package, and should instead use `crypto/ed25519` for signatures, `golang.org/x/crypto/curve25519` for Diffie-Hellman, or `github.com/gtank/ristretto255` for prime order group logic. However, for anyone currently using a fork of `crypto/internal/edwards25519`/`crypto/ed25519/internal/edwards25519` or `github.com/agl/edwards25519`, this package should be a safer, faster, and more powerful alternative.
+
+Since this package is meant to curb proliferation of edwards25519 implementations in the Go ecosystem, it welcomes requests for new APIs or reviewable performance improvements.

vendor/filippo.io/edwards25519/doc.go

@@ -0,0 +1,20 @@
+// Copyright (c) 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package edwards25519 implements group logic for the twisted Edwards curve
+//
+//	-x^2 + y^2 = 1 + -(121665/121666)*x^2*y^2
+//
+// This is better known as the Edwards curve equivalent to Curve25519, and is
+// the curve used by the Ed25519 signature scheme.
+//
+// Most users don't need this package, and should instead use crypto/ed25519 for
+// signatures, golang.org/x/crypto/curve25519 for Diffie-Hellman, or
+// github.com/gtank/ristretto255 for prime order group logic.
+//
+// However, developers who do need to interact with low-level edwards25519
+// operations can use this package, which is an extended version of
+// crypto/internal/edwards25519 from the standard library repackaged as
+// an importable module.
+package edwards25519

vendor/filippo.io/edwards25519/edwards25519.go

@@ -0,0 +1,427 @@
+// Copyright (c) 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+import (
+	"errors"
+
+	"filippo.io/edwards25519/field"
+)
+
+// Point types.
+
+type projP1xP1 struct {
+	X, Y, Z, T field.Element
+}
+
+type projP2 struct {
+	X, Y, Z field.Element
+}
+
+// Point represents a point on the edwards25519 curve.
+//
+// This type works similarly to math/big.Int, and all arguments and receivers
+// are allowed to alias.
+//
+// The zero value is NOT valid, and it may be used only as a receiver.
+type Point struct {
+	// Make the type not comparable (i.e. used with == or as a map key), as
+	// equivalent points can be represented by different Go values.
+	_ incomparable
+
+	// The point is internally represented in extended coordinates (X, Y, Z, T)
+	// where x = X/Z, y = Y/Z, and xy = T/Z per https://eprint.iacr.org/2008/522.
+	x, y, z, t field.Element
+}
+
+type incomparable [0]func()
+
+func checkInitialized(points ...*Point) {
+	for _, p := range points {
+		if p.x == (field.Element{}) && p.y == (field.Element{}) {
+			panic("edwards25519: use of uninitialized Point")
+		}
+	}
+}
+
+type projCached struct {
+	YplusX, YminusX, Z, T2d field.Element
+}
+
+type affineCached struct {
+	YplusX, YminusX, T2d field.Element
+}
+
+// Constructors.
+
+func (v *projP2) Zero() *projP2 {
+	v.X.Zero()
+	v.Y.One()
+	v.Z.One()
+	return v
+}
+
+// identity is the point at infinity.
+var identity, _ = new(Point).SetBytes([]byte{
+	1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
+
+// NewIdentityPoint returns a new Point set to the identity.
+func NewIdentityPoint() *Point {
+	return new(Point).Set(identity)
+}
+
+// generator is the canonical curve basepoint. See TestGenerator for the
+// correspondence of this encoding with the values in RFC 8032.
+var generator, _ = new(Point).SetBytes([]byte{
+	0x58, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+	0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+	0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+	0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66})
+
+// NewGeneratorPoint returns a new Point set to the canonical generator.
+func NewGeneratorPoint() *Point {
+	return new(Point).Set(generator)
+}
+
+func (v *projCached) Zero() *projCached {
+	v.YplusX.One()
+	v.YminusX.One()
+	v.Z.One()
+	v.T2d.Zero()
+	return v
+}
+
+func (v *affineCached) Zero() *affineCached {
+	v.YplusX.One()
+	v.YminusX.One()
+	v.T2d.Zero()
+	return v
+}
+
+// Assignments.
+
+// Set sets v = u, and returns v.
+func (v *Point) Set(u *Point) *Point {
+	*v = *u
+	return v
+}
+
+// Encoding.
+
+// Bytes returns the canonical 32-byte encoding of v, according to RFC 8032,
+// Section 5.1.2.
+func (v *Point) Bytes() []byte {
+	// This function is outlined to make the allocations inline in the caller
+	// rather than happen on the heap.
+	var buf [32]byte
+	return v.bytes(&buf)
+}
+
+func (v *Point) bytes(buf *[32]byte) []byte {
+	checkInitialized(v)
+
+	var zInv, x, y field.Element
+	zInv.Invert(&v.z)       // zInv = 1 / Z
+	x.Multiply(&v.x, &zInv) // x = X / Z
+	y.Multiply(&v.y, &zInv) // y = Y / Z
+
+	out := copyFieldElement(buf, &y)
+	out[31] |= byte(x.IsNegative() << 7)
+	return out
+}
+
+var feOne = new(field.Element).One()
+
+// SetBytes sets v = x, where x is a 32-byte encoding of v. If x does not
+// represent a valid point on the curve, SetBytes returns nil and an error and
+// the receiver is unchanged. Otherwise, SetBytes returns v.
+//
+// Note that SetBytes accepts all non-canonical encodings of valid points.
+// That is, it follows decoding rules that match most implementations in
+// the ecosystem rather than RFC 8032.
+func (v *Point) SetBytes(x []byte) (*Point, error) {
+	// Specifically, the non-canonical encodings that are accepted are
+	//   1) the ones where the field element is not reduced (see the
+	//      (*field.Element).SetBytes docs) and
+	//   2) the ones where the x-coordinate is zero and the sign bit is set.
+	//
+	// Read more at https://hdevalence.ca/blog/2020-10-04-its-25519am,
+	// specifically the "Canonical A, R" section.
+
+	y, err := new(field.Element).SetBytes(x)
+	if err != nil {
+		return nil, errors.New("edwards25519: invalid point encoding length")
+	}
+
+	// -x² + y² = 1 + dx²y²
+	// x² + dx²y² = x²(dy² + 1) = y² - 1
+	// x² = (y² - 1) / (dy² + 1)
+
+	// u = y² - 1
+	y2 := new(field.Element).Square(y)
+	u := new(field.Element).Subtract(y2, feOne)
+
+	// v = dy² + 1
+	vv := new(field.Element).Multiply(y2, d)
+	vv = vv.Add(vv, feOne)
+
+	// x = +√(u/v)
+	xx, wasSquare := new(field.Element).SqrtRatio(u, vv)
+	if wasSquare == 0 {
+		return nil, errors.New("edwards25519: invalid point encoding")
+	}
+
+	// Select the negative square root if the sign bit is set.
+	xxNeg := new(field.Element).Negate(xx)
+	xx = xx.Select(xxNeg, xx, int(x[31]>>7))
+
+	v.x.Set(xx)
+	v.y.Set(y)
+	v.z.One()
+	v.t.Multiply(xx, y) // xy = T / Z
+
+	return v, nil
+}
+
+func copyFieldElement(buf *[32]byte, v *field.Element) []byte {
+	copy(buf[:], v.Bytes())
+	return buf[:]
+}
+
+// Conversions.
+
+func (v *projP2) FromP1xP1(p *projP1xP1) *projP2 {
+	v.X.Multiply(&p.X, &p.T)
+	v.Y.Multiply(&p.Y, &p.Z)
+	v.Z.Multiply(&p.Z, &p.T)
+	return v
+}
+
+func (v *projP2) FromP3(p *Point) *projP2 {
+	v.X.Set(&p.x)
+	v.Y.Set(&p.y)
+	v.Z.Set(&p.z)
+	return v
+}
+
+func (v *Point) fromP1xP1(p *projP1xP1) *Point {
+	v.x.Multiply(&p.X, &p.T)
+	v.y.Multiply(&p.Y, &p.Z)
+	v.z.Multiply(&p.Z, &p.T)
+	v.t.Multiply(&p.X, &p.Y)
+	return v
+}
+
+func (v *Point) fromP2(p *projP2) *Point {
+	v.x.Multiply(&p.X, &p.Z)
+	v.y.Multiply(&p.Y, &p.Z)
+	v.z.Square(&p.Z)
+	v.t.Multiply(&p.X, &p.Y)
+	return v
+}
+
+// d is a constant in the curve equation.
+var d, _ = new(field.Element).SetBytes([]byte{
+	0xa3, 0x78, 0x59, 0x13, 0xca, 0x4d, 0xeb, 0x75,
+	0xab, 0xd8, 0x41, 0x41, 0x4d, 0x0a, 0x70, 0x00,
+	0x98, 0xe8, 0x79, 0x77, 0x79, 0x40, 0xc7, 0x8c,
+	0x73, 0xfe, 0x6f, 0x2b, 0xee, 0x6c, 0x03, 0x52})
+var d2 = new(field.Element).Add(d, d)
+
+func (v *projCached) FromP3(p *Point) *projCached {
+	v.YplusX.Add(&p.y, &p.x)
+	v.YminusX.Subtract(&p.y, &p.x)
+	v.Z.Set(&p.z)
+	v.T2d.Multiply(&p.t, d2)
+	return v
+}
+
+func (v *affineCached) FromP3(p *Point) *affineCached {
+	v.YplusX.Add(&p.y, &p.x)
+	v.YminusX.Subtract(&p.y, &p.x)
+	v.T2d.Multiply(&p.t, d2)
+
+	var invZ field.Element
+	invZ.Invert(&p.z)
+	v.YplusX.Multiply(&v.YplusX, &invZ)
+	v.YminusX.Multiply(&v.YminusX, &invZ)
+	v.T2d.Multiply(&v.T2d, &invZ)
+	return v
+}
+
+// (Re)addition and subtraction.
+
+// Add sets v = p + q, and returns v.
+func (v *Point) Add(p, q *Point) *Point {
+	checkInitialized(p, q)
+	qCached := new(projCached).FromP3(q)
+	result := new(projP1xP1).Add(p, qCached)
+	return v.fromP1xP1(result)
+}
+
+// Subtract sets v = p - q, and returns v.
+func (v *Point) Subtract(p, q *Point) *Point {
+	checkInitialized(p, q)
+	qCached := new(projCached).FromP3(q)
+	result := new(projP1xP1).Sub(p, qCached)
+	return v.fromP1xP1(result)
+}
+
+func (v *projP1xP1) Add(p *Point, q *projCached) *projP1xP1 {
+	var YplusX, YminusX, PP, MM, TT2d, ZZ2 field.Element
+
+	YplusX.Add(&p.y, &p.x)
+	YminusX.Subtract(&p.y, &p.x)
+
+	PP.Multiply(&YplusX, &q.YplusX)
+	MM.Multiply(&YminusX, &q.YminusX)
+	TT2d.Multiply(&p.t, &q.T2d)
+	ZZ2.Multiply(&p.z, &q.Z)
+
+	ZZ2.Add(&ZZ2, &ZZ2)
+
+	v.X.Subtract(&PP, &MM)
+	v.Y.Add(&PP, &MM)
+	v.Z.Add(&ZZ2, &TT2d)
+	v.T.Subtract(&ZZ2, &TT2d)
+	return v
+}
+
+func (v *projP1xP1) Sub(p *Point, q *projCached) *projP1xP1 {
+	var YplusX, YminusX, PP, MM, TT2d, ZZ2 field.Element
+
+	YplusX.Add(&p.y, &p.x)
+	YminusX.Subtract(&p.y, &p.x)
+
+	PP.Multiply(&YplusX, &q.YminusX) // flipped sign
+	MM.Multiply(&YminusX, &q.YplusX) // flipped sign
+	TT2d.Multiply(&p.t, &q.T2d)
+	ZZ2.Multiply(&p.z, &q.Z)
+
+	ZZ2.Add(&ZZ2, &ZZ2)
+
+	v.X.Subtract(&PP, &MM)
+	v.Y.Add(&PP, &MM)
+	v.Z.Subtract(&ZZ2, &TT2d) // flipped sign
+	v.T.Add(&ZZ2, &TT2d)      // flipped sign
+	return v
+}
+
+func (v *projP1xP1) AddAffine(p *Point, q *affineCached) *projP1xP1 {
+	var YplusX, YminusX, PP, MM, TT2d, Z2 field.Element
+
+	YplusX.Add(&p.y, &p.x)
+	YminusX.Subtract(&p.y, &p.x)
+
+	PP.Multiply(&YplusX, &q.YplusX)
+	MM.Multiply(&YminusX, &q.YminusX)
+	TT2d.Multiply(&p.t, &q.T2d)
+
+	Z2.Add(&p.z, &p.z)
+
+	v.X.Subtract(&PP, &MM)
+	v.Y.Add(&PP, &MM)
+	v.Z.Add(&Z2, &TT2d)
+	v.T.Subtract(&Z2, &TT2d)
+	return v
+}
+
+func (v *projP1xP1) SubAffine(p *Point, q *affineCached) *projP1xP1 {
+	var YplusX, YminusX, PP, MM, TT2d, Z2 field.Element
+
+	YplusX.Add(&p.y, &p.x)
+	YminusX.Subtract(&p.y, &p.x)
+
+	PP.Multiply(&YplusX, &q.YminusX) // flipped sign
+	MM.Multiply(&YminusX, &q.YplusX) // flipped sign
+	TT2d.Multiply(&p.t, &q.T2d)
+
+	Z2.Add(&p.z, &p.z)
+
+	v.X.Subtract(&PP, &MM)
+	v.Y.Add(&PP, &MM)
+	v.Z.Subtract(&Z2, &TT2d) // flipped sign
+	v.T.Add(&Z2, &TT2d)      // flipped sign
+	return v
+}
+
+// Doubling.
+
+func (v *projP1xP1) Double(p *projP2) *projP1xP1 {
+	var XX, YY, ZZ2, XplusYsq field.Element
+
+	XX.Square(&p.X)
+	YY.Square(&p.Y)
+	ZZ2.Square(&p.Z)
+	ZZ2.Add(&ZZ2, &ZZ2)
+	XplusYsq.Add(&p.X, &p.Y)
+	XplusYsq.Square(&XplusYsq)
+
+	v.Y.Add(&YY, &XX)
+	v.Z.Subtract(&YY, &XX)
+
+	v.X.Subtract(&XplusYsq, &v.Y)
+	v.T.Subtract(&ZZ2, &v.Z)
+	return v
+}
+
+// Negation.
+
+// Negate sets v = -p, and returns v.
+func (v *Point) Negate(p *Point) *Point {
+	checkInitialized(p)
+	v.x.Negate(&p.x)
+	v.y.Set(&p.y)
+	v.z.Set(&p.z)
+	v.t.Negate(&p.t)
+	return v
+}
+
+// Equal returns 1 if v is equivalent to u, and 0 otherwise.
+func (v *Point) Equal(u *Point) int {
+	checkInitialized(v, u)
+
+	var t1, t2, t3, t4 field.Element
+	t1.Multiply(&v.x, &u.z)
+	t2.Multiply(&u.x, &v.z)
+	t3.Multiply(&v.y, &u.z)
+	t4.Multiply(&u.y, &v.z)
+
+	return t1.Equal(&t2) & t3.Equal(&t4)
+}
+
+// Constant-time operations
+
+// Select sets v to a if cond == 1 and to b if cond == 0.
+func (v *projCached) Select(a, b *projCached, cond int) *projCached {
+	v.YplusX.Select(&a.YplusX, &b.YplusX, cond)
+	v.YminusX.Select(&a.YminusX, &b.YminusX, cond)
+	v.Z.Select(&a.Z, &b.Z, cond)
+	v.T2d.Select(&a.T2d, &b.T2d, cond)
+	return v
+}
+
+// Select sets v to a if cond == 1 and to b if cond == 0.
+func (v *affineCached) Select(a, b *affineCached, cond int) *affineCached {
+	v.YplusX.Select(&a.YplusX, &b.YplusX, cond)
+	v.YminusX.Select(&a.YminusX, &b.YminusX, cond)
+	v.T2d.Select(&a.T2d, &b.T2d, cond)
+	return v
+}
+
+// CondNeg negates v if cond == 1 and leaves it unchanged if cond == 0.
+func (v *projCached) CondNeg(cond int) *projCached {
+	v.YplusX.Swap(&v.YminusX, cond)
+	v.T2d.Select(new(field.Element).Negate(&v.T2d), &v.T2d, cond)
+	return v
+}
+
+// CondNeg negates v if cond == 1 and leaves it unchanged if cond == 0.
+func (v *affineCached) CondNeg(cond int) *affineCached {
+	v.YplusX.Swap(&v.YminusX, cond)
+	v.T2d.Select(new(field.Element).Negate(&v.T2d), &v.T2d, cond)
+	return v
+}

vendor/filippo.io/edwards25519/extra.go

@@ -0,0 +1,349 @@
+// Copyright (c) 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+// This file contains additional functionality that is not included in the
+// upstream crypto/internal/edwards25519 package.
+
+import (
+	"errors"
+
+	"filippo.io/edwards25519/field"
+)
+
+// ExtendedCoordinates returns v in extended coordinates (X:Y:Z:T) where
+// x = X/Z, y = Y/Z, and xy = T/Z as in https://eprint.iacr.org/2008/522.
+func (v *Point) ExtendedCoordinates() (X, Y, Z, T *field.Element) {
+	// This function is outlined to make the allocations inline in the caller
+	// rather than happen on the heap. Don't change the style without making
+	// sure it doesn't increase the inliner cost.
+	var e [4]field.Element
+	X, Y, Z, T = v.extendedCoordinates(&e)
+	return
+}
+
+func (v *Point) extendedCoordinates(e *[4]field.Element) (X, Y, Z, T *field.Element) {
+	checkInitialized(v)
+	X = e[0].Set(&v.x)
+	Y = e[1].Set(&v.y)
+	Z = e[2].Set(&v.z)
+	T = e[3].Set(&v.t)
+	return
+}
+
+// SetExtendedCoordinates sets v = (X:Y:Z:T) in extended coordinates where
+// x = X/Z, y = Y/Z, and xy = T/Z as in https://eprint.iacr.org/2008/522.
+//
+// If the coordinates are invalid or don't represent a valid point on the curve,
+// SetExtendedCoordinates returns nil and an error and the receiver is
+// unchanged. Otherwise, SetExtendedCoordinates returns v.
+func (v *Point) SetExtendedCoordinates(X, Y, Z, T *field.Element) (*Point, error) {
+	if !isOnCurve(X, Y, Z, T) {
+		return nil, errors.New("edwards25519: invalid point coordinates")
+	}
+	v.x.Set(X)
+	v.y.Set(Y)
+	v.z.Set(Z)
+	v.t.Set(T)
+	return v, nil
+}
+
+func isOnCurve(X, Y, Z, T *field.Element) bool {
+	var lhs, rhs field.Element
+	XX := new(field.Element).Square(X)
+	YY := new(field.Element).Square(Y)
+	ZZ := new(field.Element).Square(Z)
+	TT := new(field.Element).Square(T)
+	// -x² + y² = 1 + dx²y²
+	// -(X/Z)² + (Y/Z)² = 1 + d(T/Z)²
+	// -X² + Y² = Z² + dT²
+	lhs.Subtract(YY, XX)
+	rhs.Multiply(d, TT).Add(&rhs, ZZ)
+	if lhs.Equal(&rhs) != 1 {
+		return false
+	}
+	// xy = T/Z
+	// XY/Z² = T/Z
+	// XY = TZ
+	lhs.Multiply(X, Y)
+	rhs.Multiply(T, Z)
+	return lhs.Equal(&rhs) == 1
+}
+
+// BytesMontgomery converts v to a point on the birationally-equivalent
+// Curve25519 Montgomery curve, and returns its canonical 32 bytes encoding
+// according to RFC 7748.
+//
+// Note that BytesMontgomery only encodes the u-coordinate, so v and -v encode
+// to the same value. If v is the identity point, BytesMontgomery returns 32
+// zero bytes, analogously to the X25519 function.
+//
+// The lack of an inverse operation (such as SetMontgomeryBytes) is deliberate:
+// while every valid edwards25519 point has a unique u-coordinate Montgomery
+// encoding, X25519 accepts inputs on the quadratic twist, which don't correspond
+// to any edwards25519 point, and every other X25519 input corresponds to two
+// edwards25519 points.
+func (v *Point) BytesMontgomery() []byte {
+	// This function is outlined to make the allocations inline in the caller
+	// rather than happen on the heap.
+	var buf [32]byte
+	return v.bytesMontgomery(&buf)
+}
+
+func (v *Point) bytesMontgomery(buf *[32]byte) []byte {
+	checkInitialized(v)
+
+	// RFC 7748, Section 4.1 provides the bilinear map to calculate the
+	// Montgomery u-coordinate
+	//
+	//              u = (1 + y) / (1 - y)
+	//
+	// where y = Y / Z.
+
+	var y, recip, u field.Element
+
+	y.Multiply(&v.y, y.Invert(&v.z))        // y = Y / Z
+	recip.Invert(recip.Subtract(feOne, &y)) // r = 1/(1 - y)
+	u.Multiply(u.Add(feOne, &y), &recip)    // u = (1 + y)*r
+
+	return copyFieldElement(buf, &u)
+}
+
+// MultByCofactor sets v = 8 * p, and returns v.
+func (v *Point) MultByCofactor(p *Point) *Point {
+	checkInitialized(p)
+	result := projP1xP1{}
+	pp := (&projP2{}).FromP3(p)
+	result.Double(pp)
+	pp.FromP1xP1(&result)
+	result.Double(pp)
+	pp.FromP1xP1(&result)
+	result.Double(pp)
+	return v.fromP1xP1(&result)
+}
+
+// Given k > 0, set s = s**(2*i).
+func (s *Scalar) pow2k(k int) {
+	for i := 0; i < k; i++ {
+		s.Multiply(s, s)
+	}
+}
+
+// Invert sets s to the inverse of a nonzero scalar v, and returns s.
+//
+// If t is zero, Invert returns zero.
+func (s *Scalar) Invert(t *Scalar) *Scalar {
+	// Uses a hardcoded sliding window of width 4.
+	var table [8]Scalar
+	var tt Scalar
+	tt.Multiply(t, t)
+	table[0] = *t
+	for i := 0; i < 7; i++ {
+		table[i+1].Multiply(&table[i], &tt)
+	}
+	// Now table = [t**1, t**3, t**5, t**7, t**9, t**11, t**13, t**15]
+	// so t**k = t[k/2] for odd k
+
+	// To compute the sliding window digits, use the following Sage script:
+
+	// sage: import itertools
+	// sage: def sliding_window(w,k):
+	// ....:     digits = []
+	// ....:     while k > 0:
+	// ....:         if k % 2 == 1:
+	// ....:             kmod = k % (2**w)
+	// ....:             digits.append(kmod)
+	// ....:             k = k - kmod
+	// ....:         else:
+	// ....:             digits.append(0)
+	// ....:         k = k // 2
+	// ....:     return digits
+
+	// Now we can compute s roughly as follows:
+
+	// sage: s = 1
+	// sage: for coeff in reversed(sliding_window(4,l-2)):
+	// ....:     s = s*s
+	// ....:     if coeff > 0 :
+	// ....:         s = s*t**coeff
+
+	// This works on one bit at a time, with many runs of zeros.
+	// The digits can be collapsed into [(count, coeff)] as follows:
+
+	// sage: [(len(list(group)),d) for d,group in itertools.groupby(sliding_window(4,l-2))]
+
+	// Entries of the form (k, 0) turn into pow2k(k)
+	// Entries of the form (1, coeff) turn into a squaring and then a table lookup.
+	// We can fold the squaring into the previous pow2k(k) as pow2k(k+1).
+
+	*s = table[1/2]
+	s.pow2k(127 + 1)
+	s.Multiply(s, &table[1/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[9/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[11/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[13/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[7/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[5/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[1/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[7/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[11/2])
+	s.pow2k(5 + 1)
+	s.Multiply(s, &table[11/2])
+	s.pow2k(9 + 1)
+	s.Multiply(s, &table[9/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[9/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[7/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[3/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[13/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[7/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[9/2])
+	s.pow2k(3 + 1)
+	s.Multiply(s, &table[15/2])
+	s.pow2k(4 + 1)
+	s.Multiply(s, &table[11/2])
+
+	return s
+}
+
+// MultiScalarMult sets v = sum(scalars[i] * points[i]), and returns v.
+//
+// Execution time depends only on the lengths of the two slices, which must match.
+func (v *Point) MultiScalarMult(scalars []*Scalar, points []*Point) *Point {
+	if len(scalars) != len(points) {
+		panic("edwards25519: called MultiScalarMult with different size inputs")
+	}
+	checkInitialized(points...)
+
+	// Proceed as in the single-base case, but share doublings
+	// between each point in the multiscalar equation.
+
+	// Build lookup tables for each point
+	tables := make([]projLookupTable, len(points))
+	for i := range tables {
+		tables[i].FromP3(points[i])
+	}
+	// Compute signed radix-16 digits for each scalar
+	digits := make([][64]int8, len(scalars))
+	for i := range digits {
+		digits[i] = scalars[i].signedRadix16()
+	}
+
+	// Unwrap first loop iteration to save computing 16*identity
+	multiple := &projCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+	// Lookup-and-add the appropriate multiple of each input point
+	for j := range tables {
+		tables[j].SelectInto(multiple, digits[j][63])
+		tmp1.Add(v, multiple) // tmp1 = v + x_(j,63)*Q in P1xP1 coords
+		v.fromP1xP1(tmp1)     // update v
+	}
+	tmp2.FromP3(v) // set up tmp2 = v in P2 coords for next iteration
+	for i := 62; i >= 0; i-- {
+		tmp1.Double(tmp2)    // tmp1 =  2*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  2*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  4*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  4*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  8*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  8*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 = 16*(prev) in P1xP1 coords
+		v.fromP1xP1(tmp1)    //    v = 16*(prev) in P3 coords
+		// Lookup-and-add the appropriate multiple of each input point
+		for j := range tables {
+			tables[j].SelectInto(multiple, digits[j][i])
+			tmp1.Add(v, multiple) // tmp1 = v + x_(j,i)*Q in P1xP1 coords
+			v.fromP1xP1(tmp1)     // update v
+		}
+		tmp2.FromP3(v) // set up tmp2 = v in P2 coords for next iteration
+	}
+	return v
+}
+
+// VarTimeMultiScalarMult sets v = sum(scalars[i] * points[i]), and returns v.
+//
+// Execution time depends on the inputs.
+func (v *Point) VarTimeMultiScalarMult(scalars []*Scalar, points []*Point) *Point {
+	if len(scalars) != len(points) {
+		panic("edwards25519: called VarTimeMultiScalarMult with different size inputs")
+	}
+	checkInitialized(points...)
+
+	// Generalize double-base NAF computation to arbitrary sizes.
+	// Here all the points are dynamic, so we only use the smaller
+	// tables.
+
+	// Build lookup tables for each point
+	tables := make([]nafLookupTable5, len(points))
+	for i := range tables {
+		tables[i].FromP3(points[i])
+	}
+	// Compute a NAF for each scalar
+	nafs := make([][256]int8, len(scalars))
+	for i := range nafs {
+		nafs[i] = scalars[i].nonAdjacentForm(5)
+	}
+
+	multiple := &projCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+	tmp2.Zero()
+
+	// Move from high to low bits, doubling the accumulator
+	// at each iteration and checking whether there is a nonzero
+	// coefficient to look up a multiple of.
+	//
+	// Skip trying to find the first nonzero coefficent, because
+	// searching might be more work than a few extra doublings.
+	for i := 255; i >= 0; i-- {
+		tmp1.Double(tmp2)
+
+		for j := range nafs {
+			if nafs[j][i] > 0 {
+				v.fromP1xP1(tmp1)
+				tables[j].SelectInto(multiple, nafs[j][i])
+				tmp1.Add(v, multiple)
+			} else if nafs[j][i] < 0 {
+				v.fromP1xP1(tmp1)
+				tables[j].SelectInto(multiple, -nafs[j][i])
+				tmp1.Sub(v, multiple)
+			}
+		}
+
+		tmp2.FromP1xP1(tmp1)
+	}
+
+	v.fromP2(tmp2)
+	return v
+}

vendor/filippo.io/edwards25519/field/fe.go

@@ -0,0 +1,420 @@
+// Copyright (c) 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package field implements fast arithmetic modulo 2^255-19.
+package field
+
+import (
+	"crypto/subtle"
+	"encoding/binary"
+	"errors"
+	"math/bits"
+)
+
+// Element represents an element of the field GF(2^255-19). Note that this
+// is not a cryptographically secure group, and should only be used to interact
+// with edwards25519.Point coordinates.
+//
+// This type works similarly to math/big.Int, and all arguments and receivers
+// are allowed to alias.
+//
+// The zero value is a valid zero element.
+type Element struct {
+	// An element t represents the integer
+	//     t.l0 + t.l1*2^51 + t.l2*2^102 + t.l3*2^153 + t.l4*2^204
+	//
+	// Between operations, all limbs are expected to be lower than 2^52.
+	l0 uint64
+	l1 uint64
+	l2 uint64
+	l3 uint64
+	l4 uint64
+}
+
+const maskLow51Bits uint64 = (1 << 51) - 1
+
+var feZero = &Element{0, 0, 0, 0, 0}
+
+// Zero sets v = 0, and returns v.
+func (v *Element) Zero() *Element {
+	*v = *feZero
+	return v
+}
+
+var feOne = &Element{1, 0, 0, 0, 0}
+
+// One sets v = 1, and returns v.
+func (v *Element) One() *Element {
+	*v = *feOne
+	return v
+}
+
+// reduce reduces v modulo 2^255 - 19 and returns it.
+func (v *Element) reduce() *Element {
+	v.carryPropagate()
+
+	// After the light reduction we now have a field element representation
+	// v < 2^255 + 2^13 * 19, but need v < 2^255 - 19.
+
+	// If v >= 2^255 - 19, then v + 19 >= 2^255, which would overflow 2^255 - 1,
+	// generating a carry. That is, c will be 0 if v < 2^255 - 19, and 1 otherwise.
+	c := (v.l0 + 19) >> 51
+	c = (v.l1 + c) >> 51
+	c = (v.l2 + c) >> 51
+	c = (v.l3 + c) >> 51
+	c = (v.l4 + c) >> 51
+
+	// If v < 2^255 - 19 and c = 0, this will be a no-op. Otherwise, it's
+	// effectively applying the reduction identity to the carry.
+	v.l0 += 19 * c
+
+	v.l1 += v.l0 >> 51
+	v.l0 = v.l0 & maskLow51Bits
+	v.l2 += v.l1 >> 51
+	v.l1 = v.l1 & maskLow51Bits
+	v.l3 += v.l2 >> 51
+	v.l2 = v.l2 & maskLow51Bits
+	v.l4 += v.l3 >> 51
+	v.l3 = v.l3 & maskLow51Bits
+	// no additional carry
+	v.l4 = v.l4 & maskLow51Bits
+
+	return v
+}
+
+// Add sets v = a + b, and returns v.
+func (v *Element) Add(a, b *Element) *Element {
+	v.l0 = a.l0 + b.l0
+	v.l1 = a.l1 + b.l1
+	v.l2 = a.l2 + b.l2
+	v.l3 = a.l3 + b.l3
+	v.l4 = a.l4 + b.l4
+	// Using the generic implementation here is actually faster than the
+	// assembly. Probably because the body of this function is so simple that
+	// the compiler can figure out better optimizations by inlining the carry
+	// propagation.
+	return v.carryPropagateGeneric()
+}
+
+// Subtract sets v = a - b, and returns v.
+func (v *Element) Subtract(a, b *Element) *Element {
+	// We first add 2 * p, to guarantee the subtraction won't underflow, and
+	// then subtract b (which can be up to 2^255 + 2^13 * 19).
+	v.l0 = (a.l0 + 0xFFFFFFFFFFFDA) - b.l0
+	v.l1 = (a.l1 + 0xFFFFFFFFFFFFE) - b.l1
+	v.l2 = (a.l2 + 0xFFFFFFFFFFFFE) - b.l2
+	v.l3 = (a.l3 + 0xFFFFFFFFFFFFE) - b.l3
+	v.l4 = (a.l4 + 0xFFFFFFFFFFFFE) - b.l4
+	return v.carryPropagate()
+}
+
+// Negate sets v = -a, and returns v.
+func (v *Element) Negate(a *Element) *Element {
+	return v.Subtract(feZero, a)
+}
+
+// Invert sets v = 1/z mod p, and returns v.
+//
+// If z == 0, Invert returns v = 0.
+func (v *Element) Invert(z *Element) *Element {
+	// Inversion is implemented as exponentiation with exponent p − 2. It uses the
+	// same sequence of 255 squarings and 11 multiplications as [Curve25519].
+	var z2, z9, z11, z2_5_0, z2_10_0, z2_20_0, z2_50_0, z2_100_0, t Element
+
+	z2.Square(z)             // 2
+	t.Square(&z2)            // 4
+	t.Square(&t)             // 8
+	z9.Multiply(&t, z)       // 9
+	z11.Multiply(&z9, &z2)   // 11
+	t.Square(&z11)           // 22
+	z2_5_0.Multiply(&t, &z9) // 31 = 2^5 - 2^0
+
+	t.Square(&z2_5_0) // 2^6 - 2^1
+	for i := 0; i < 4; i++ {
+		t.Square(&t) // 2^10 - 2^5
+	}
+	z2_10_0.Multiply(&t, &z2_5_0) // 2^10 - 2^0
+
+	t.Square(&z2_10_0) // 2^11 - 2^1
+	for i := 0; i < 9; i++ {
+		t.Square(&t) // 2^20 - 2^10
+	}
+	z2_20_0.Multiply(&t, &z2_10_0) // 2^20 - 2^0
+
+	t.Square(&z2_20_0) // 2^21 - 2^1
+	for i := 0; i < 19; i++ {
+		t.Square(&t) // 2^40 - 2^20
+	}
+	t.Multiply(&t, &z2_20_0) // 2^40 - 2^0
+
+	t.Square(&t) // 2^41 - 2^1
+	for i := 0; i < 9; i++ {
+		t.Square(&t) // 2^50 - 2^10
+	}
+	z2_50_0.Multiply(&t, &z2_10_0) // 2^50 - 2^0
+
+	t.Square(&z2_50_0) // 2^51 - 2^1
+	for i := 0; i < 49; i++ {
+		t.Square(&t) // 2^100 - 2^50
+	}
+	z2_100_0.Multiply(&t, &z2_50_0) // 2^100 - 2^0
+
+	t.Square(&z2_100_0) // 2^101 - 2^1
+	for i := 0; i < 99; i++ {
+		t.Square(&t) // 2^200 - 2^100
+	}
+	t.Multiply(&t, &z2_100_0) // 2^200 - 2^0
+
+	t.Square(&t) // 2^201 - 2^1
+	for i := 0; i < 49; i++ {
+		t.Square(&t) // 2^250 - 2^50
+	}
+	t.Multiply(&t, &z2_50_0) // 2^250 - 2^0
+
+	t.Square(&t) // 2^251 - 2^1
+	t.Square(&t) // 2^252 - 2^2
+	t.Square(&t) // 2^253 - 2^3
+	t.Square(&t) // 2^254 - 2^4
+	t.Square(&t) // 2^255 - 2^5
+
+	return v.Multiply(&t, &z11) // 2^255 - 21
+}
+
+// Set sets v = a, and returns v.
+func (v *Element) Set(a *Element) *Element {
+	*v = *a
+	return v
+}
+
+// SetBytes sets v to x, where x is a 32-byte little-endian encoding. If x is
+// not of the right length, SetBytes returns nil and an error, and the
+// receiver is unchanged.
+//
+// Consistent with RFC 7748, the most significant bit (the high bit of the
+// last byte) is ignored, and non-canonical values (2^255-19 through 2^255-1)
+// are accepted. Note that this is laxer than specified by RFC 8032, but
+// consistent with most Ed25519 implementations.
+func (v *Element) SetBytes(x []byte) (*Element, error) {
+	if len(x) != 32 {
+		return nil, errors.New("edwards25519: invalid field element input size")
+	}
+
+	// Bits 0:51 (bytes 0:8, bits 0:64, shift 0, mask 51).
+	v.l0 = binary.LittleEndian.Uint64(x[0:8])
+	v.l0 &= maskLow51Bits
+	// Bits 51:102 (bytes 6:14, bits 48:112, shift 3, mask 51).
+	v.l1 = binary.LittleEndian.Uint64(x[6:14]) >> 3
+	v.l1 &= maskLow51Bits
+	// Bits 102:153 (bytes 12:20, bits 96:160, shift 6, mask 51).
+	v.l2 = binary.LittleEndian.Uint64(x[12:20]) >> 6
+	v.l2 &= maskLow51Bits
+	// Bits 153:204 (bytes 19:27, bits 152:216, shift 1, mask 51).
+	v.l3 = binary.LittleEndian.Uint64(x[19:27]) >> 1
+	v.l3 &= maskLow51Bits
+	// Bits 204:255 (bytes 24:32, bits 192:256, shift 12, mask 51).
+	// Note: not bytes 25:33, shift 4, to avoid overread.
+	v.l4 = binary.LittleEndian.Uint64(x[24:32]) >> 12
+	v.l4 &= maskLow51Bits
+
+	return v, nil
+}
+
+// Bytes returns the canonical 32-byte little-endian encoding of v.
+func (v *Element) Bytes() []byte {
+	// This function is outlined to make the allocations inline in the caller
+	// rather than happen on the heap.
+	var out [32]byte
+	return v.bytes(&out)
+}
+
+func (v *Element) bytes(out *[32]byte) []byte {
+	t := *v
+	t.reduce()
+
+	var buf [8]byte
+	for i, l := range [5]uint64{t.l0, t.l1, t.l2, t.l3, t.l4} {
+		bitsOffset := i * 51
+		binary.LittleEndian.PutUint64(buf[:], l<<uint(bitsOffset%8))
+		for i, bb := range buf {
+			off := bitsOffset/8 + i
+			if off >= len(out) {
+				break
+			}
+			out[off] |= bb
+		}
+	}
+
+	return out[:]
+}
+
+// Equal returns 1 if v and u are equal, and 0 otherwise.
+func (v *Element) Equal(u *Element) int {
+	sa, sv := u.Bytes(), v.Bytes()
+	return subtle.ConstantTimeCompare(sa, sv)
+}
+
+// mask64Bits returns 0xffffffff if cond is 1, and 0 otherwise.
+func mask64Bits(cond int) uint64 { return ^(uint64(cond) - 1) }
+
+// Select sets v to a if cond == 1, and to b if cond == 0.
+func (v *Element) Select(a, b *Element, cond int) *Element {
+	m := mask64Bits(cond)
+	v.l0 = (m & a.l0) | (^m & b.l0)
+	v.l1 = (m & a.l1) | (^m & b.l1)
+	v.l2 = (m & a.l2) | (^m & b.l2)
+	v.l3 = (m & a.l3) | (^m & b.l3)
+	v.l4 = (m & a.l4) | (^m & b.l4)
+	return v
+}
+
+// Swap swaps v and u if cond == 1 or leaves them unchanged if cond == 0, and returns v.
+func (v *Element) Swap(u *Element, cond int) {
+	m := mask64Bits(cond)
+	t := m & (v.l0 ^ u.l0)
+	v.l0 ^= t
+	u.l0 ^= t
+	t = m & (v.l1 ^ u.l1)
+	v.l1 ^= t
+	u.l1 ^= t
+	t = m & (v.l2 ^ u.l2)
+	v.l2 ^= t
+	u.l2 ^= t
+	t = m & (v.l3 ^ u.l3)
+	v.l3 ^= t
+	u.l3 ^= t
+	t = m & (v.l4 ^ u.l4)
+	v.l4 ^= t
+	u.l4 ^= t
+}
+
+// IsNegative returns 1 if v is negative, and 0 otherwise.
+func (v *Element) IsNegative() int {
+	return int(v.Bytes()[0] & 1)
+}
+
+// Absolute sets v to |u|, and returns v.
+func (v *Element) Absolute(u *Element) *Element {
+	return v.Select(new(Element).Negate(u), u, u.IsNegative())
+}
+
+// Multiply sets v = x * y, and returns v.
+func (v *Element) Multiply(x, y *Element) *Element {
+	feMul(v, x, y)
+	return v
+}
+
+// Square sets v = x * x, and returns v.
+func (v *Element) Square(x *Element) *Element {
+	feSquare(v, x)
+	return v
+}
+
+// Mult32 sets v = x * y, and returns v.
+func (v *Element) Mult32(x *Element, y uint32) *Element {
+	x0lo, x0hi := mul51(x.l0, y)
+	x1lo, x1hi := mul51(x.l1, y)
+	x2lo, x2hi := mul51(x.l2, y)
+	x3lo, x3hi := mul51(x.l3, y)
+	x4lo, x4hi := mul51(x.l4, y)
+	v.l0 = x0lo + 19*x4hi // carried over per the reduction identity
+	v.l1 = x1lo + x0hi
+	v.l2 = x2lo + x1hi
+	v.l3 = x3lo + x2hi
+	v.l4 = x4lo + x3hi
+	// The hi portions are going to be only 32 bits, plus any previous excess,
+	// so we can skip the carry propagation.
+	return v
+}
+
+// mul51 returns lo + hi * 2⁵¹ = a * b.
+func mul51(a uint64, b uint32) (lo uint64, hi uint64) {
+	mh, ml := bits.Mul64(a, uint64(b))
+	lo = ml & maskLow51Bits
+	hi = (mh << 13) | (ml >> 51)
+	return
+}
+
+// Pow22523 set v = x^((p-5)/8), and returns v. (p-5)/8 is 2^252-3.
+func (v *Element) Pow22523(x *Element) *Element {
+	var t0, t1, t2 Element
+
+	t0.Square(x)             // x^2
+	t1.Square(&t0)           // x^4
+	t1.Square(&t1)           // x^8
+	t1.Multiply(x, &t1)      // x^9
+	t0.Multiply(&t0, &t1)    // x^11
+	t0.Square(&t0)           // x^22
+	t0.Multiply(&t1, &t0)    // x^31
+	t1.Square(&t0)           // x^62
+	for i := 1; i < 5; i++ { // x^992
+		t1.Square(&t1)
+	}
+	t0.Multiply(&t1, &t0)     // x^1023 -> 1023 = 2^10 - 1
+	t1.Square(&t0)            // 2^11 - 2
+	for i := 1; i < 10; i++ { // 2^20 - 2^10
+		t1.Square(&t1)
+	}
+	t1.Multiply(&t1, &t0)     // 2^20 - 1
+	t2.Square(&t1)            // 2^21 - 2
+	for i := 1; i < 20; i++ { // 2^40 - 2^20
+		t2.Square(&t2)
+	}
+	t1.Multiply(&t2, &t1)     // 2^40 - 1
+	t1.Square(&t1)            // 2^41 - 2
+	for i := 1; i < 10; i++ { // 2^50 - 2^10
+		t1.Square(&t1)
+	}
+	t0.Multiply(&t1, &t0)     // 2^50 - 1
+	t1.Square(&t0)            // 2^51 - 2
+	for i := 1; i < 50; i++ { // 2^100 - 2^50
+		t1.Square(&t1)
+	}
+	t1.Multiply(&t1, &t0)      // 2^100 - 1
+	t2.Square(&t1)             // 2^101 - 2
+	for i := 1; i < 100; i++ { // 2^200 - 2^100
+		t2.Square(&t2)
+	}
+	t1.Multiply(&t2, &t1)     // 2^200 - 1
+	t1.Square(&t1)            // 2^201 - 2
+	for i := 1; i < 50; i++ { // 2^250 - 2^50
+		t1.Square(&t1)
+	}
+	t0.Multiply(&t1, &t0)     // 2^250 - 1
+	t0.Square(&t0)            // 2^251 - 2
+	t0.Square(&t0)            // 2^252 - 4
+	return v.Multiply(&t0, x) // 2^252 - 3 -> x^(2^252-3)
+}
+
+// sqrtM1 is 2^((p-1)/4), which squared is equal to -1 by Euler's Criterion.
+var sqrtM1 = &Element{1718705420411056, 234908883556509,
+	2233514472574048, 2117202627021982, 765476049583133}
+
+// SqrtRatio sets r to the non-negative square root of the ratio of u and v.
+//
+// If u/v is square, SqrtRatio returns r and 1. If u/v is not square, SqrtRatio
+// sets r according to Section 4.3 of draft-irtf-cfrg-ristretto255-decaf448-00,
+// and returns r and 0.
+func (r *Element) SqrtRatio(u, v *Element) (R *Element, wasSquare int) {
+	t0 := new(Element)
+
+	// r = (u * v3) * (u * v7)^((p-5)/8)
+	v2 := new(Element).Square(v)
+	uv3 := new(Element).Multiply(u, t0.Multiply(v2, v))
+	uv7 := new(Element).Multiply(uv3, t0.Square(v2))
+	rr := new(Element).Multiply(uv3, t0.Pow22523(uv7))
+
+	check := new(Element).Multiply(v, t0.Square(rr)) // check = v * r^2
+
+	uNeg := new(Element).Negate(u)
+	correctSignSqrt := check.Equal(u)
+	flippedSignSqrt := check.Equal(uNeg)
+	flippedSignSqrtI := check.Equal(t0.Multiply(uNeg, sqrtM1))
+
+	rPrime := new(Element).Multiply(rr, sqrtM1) // r_prime = SQRT_M1 * r
+	// r = CT_SELECT(r_prime IF flipped_sign_sqrt | flipped_sign_sqrt_i ELSE r)
+	rr.Select(rPrime, rr, flippedSignSqrt|flippedSignSqrtI)
+
+	r.Absolute(rr) // Choose the nonnegative square root.
+	return r, correctSignSqrt | flippedSignSqrt
+}

vendor/filippo.io/edwards25519/field/fe_amd64.go

@@ -0,0 +1,16 @@
+// Code generated by command: go run fe_amd64_asm.go -out ../fe_amd64.s -stubs ../fe_amd64.go -pkg field. DO NOT EDIT.
+
+//go:build amd64 && gc && !purego
+// +build amd64,gc,!purego
+
+package field
+
+// feMul sets out = a * b. It works like feMulGeneric.
+//
+//go:noescape
+func feMul(out *Element, a *Element, b *Element)
+
+// feSquare sets out = a * a. It works like feSquareGeneric.
+//
+//go:noescape
+func feSquare(out *Element, a *Element)

vendor/filippo.io/edwards25519/field/fe_amd64.s

@@ -0,0 +1,379 @@
+// Code generated by command: go run fe_amd64_asm.go -out ../fe_amd64.s -stubs ../fe_amd64.go -pkg field. DO NOT EDIT.
+
+//go:build amd64 && gc && !purego
+// +build amd64,gc,!purego
+
+#include "textflag.h"
+
+// func feMul(out *Element, a *Element, b *Element)
+TEXT ·feMul(SB), NOSPLIT, $0-24
+	MOVQ a+8(FP), CX
+	MOVQ b+16(FP), BX
+
+	// r0 = a0×b0
+	MOVQ (CX), AX
+	MULQ (BX)
+	MOVQ AX, DI
+	MOVQ DX, SI
+
+	// r0 += 19×a1×b4
+	MOVQ   8(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(BX)
+	ADDQ   AX, DI
+	ADCQ   DX, SI
+
+	// r0 += 19×a2×b3
+	MOVQ   16(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   24(BX)
+	ADDQ   AX, DI
+	ADCQ   DX, SI
+
+	// r0 += 19×a3×b2
+	MOVQ   24(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   16(BX)
+	ADDQ   AX, DI
+	ADCQ   DX, SI
+
+	// r0 += 19×a4×b1
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   8(BX)
+	ADDQ   AX, DI
+	ADCQ   DX, SI
+
+	// r1 = a0×b1
+	MOVQ (CX), AX
+	MULQ 8(BX)
+	MOVQ AX, R9
+	MOVQ DX, R8
+
+	// r1 += a1×b0
+	MOVQ 8(CX), AX
+	MULQ (BX)
+	ADDQ AX, R9
+	ADCQ DX, R8
+
+	// r1 += 19×a2×b4
+	MOVQ   16(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(BX)
+	ADDQ   AX, R9
+	ADCQ   DX, R8
+
+	// r1 += 19×a3×b3
+	MOVQ   24(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   24(BX)
+	ADDQ   AX, R9
+	ADCQ   DX, R8
+
+	// r1 += 19×a4×b2
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   16(BX)
+	ADDQ   AX, R9
+	ADCQ   DX, R8
+
+	// r2 = a0×b2
+	MOVQ (CX), AX
+	MULQ 16(BX)
+	MOVQ AX, R11
+	MOVQ DX, R10
+
+	// r2 += a1×b1
+	MOVQ 8(CX), AX
+	MULQ 8(BX)
+	ADDQ AX, R11
+	ADCQ DX, R10
+
+	// r2 += a2×b0
+	MOVQ 16(CX), AX
+	MULQ (BX)
+	ADDQ AX, R11
+	ADCQ DX, R10
+
+	// r2 += 19×a3×b4
+	MOVQ   24(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(BX)
+	ADDQ   AX, R11
+	ADCQ   DX, R10
+
+	// r2 += 19×a4×b3
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   24(BX)
+	ADDQ   AX, R11
+	ADCQ   DX, R10
+
+	// r3 = a0×b3
+	MOVQ (CX), AX
+	MULQ 24(BX)
+	MOVQ AX, R13
+	MOVQ DX, R12
+
+	// r3 += a1×b2
+	MOVQ 8(CX), AX
+	MULQ 16(BX)
+	ADDQ AX, R13
+	ADCQ DX, R12
+
+	// r3 += a2×b1
+	MOVQ 16(CX), AX
+	MULQ 8(BX)
+	ADDQ AX, R13
+	ADCQ DX, R12
+
+	// r3 += a3×b0
+	MOVQ 24(CX), AX
+	MULQ (BX)
+	ADDQ AX, R13
+	ADCQ DX, R12
+
+	// r3 += 19×a4×b4
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(BX)
+	ADDQ   AX, R13
+	ADCQ   DX, R12
+
+	// r4 = a0×b4
+	MOVQ (CX), AX
+	MULQ 32(BX)
+	MOVQ AX, R15
+	MOVQ DX, R14
+
+	// r4 += a1×b3
+	MOVQ 8(CX), AX
+	MULQ 24(BX)
+	ADDQ AX, R15
+	ADCQ DX, R14
+
+	// r4 += a2×b2
+	MOVQ 16(CX), AX
+	MULQ 16(BX)
+	ADDQ AX, R15
+	ADCQ DX, R14
+
+	// r4 += a3×b1
+	MOVQ 24(CX), AX
+	MULQ 8(BX)
+	ADDQ AX, R15
+	ADCQ DX, R14
+
+	// r4 += a4×b0
+	MOVQ 32(CX), AX
+	MULQ (BX)
+	ADDQ AX, R15
+	ADCQ DX, R14
+
+	// First reduction chain
+	MOVQ   $0x0007ffffffffffff, AX
+	SHLQ   $0x0d, DI, SI
+	SHLQ   $0x0d, R9, R8
+	SHLQ   $0x0d, R11, R10
+	SHLQ   $0x0d, R13, R12
+	SHLQ   $0x0d, R15, R14
+	ANDQ   AX, DI
+	IMUL3Q $0x13, R14, R14
+	ADDQ   R14, DI
+	ANDQ   AX, R9
+	ADDQ   SI, R9
+	ANDQ   AX, R11
+	ADDQ   R8, R11
+	ANDQ   AX, R13
+	ADDQ   R10, R13
+	ANDQ   AX, R15
+	ADDQ   R12, R15
+
+	// Second reduction chain (carryPropagate)
+	MOVQ   DI, SI
+	SHRQ   $0x33, SI
+	MOVQ   R9, R8
+	SHRQ   $0x33, R8
+	MOVQ   R11, R10
+	SHRQ   $0x33, R10
+	MOVQ   R13, R12
+	SHRQ   $0x33, R12
+	MOVQ   R15, R14
+	SHRQ   $0x33, R14
+	ANDQ   AX, DI
+	IMUL3Q $0x13, R14, R14
+	ADDQ   R14, DI
+	ANDQ   AX, R9
+	ADDQ   SI, R9
+	ANDQ   AX, R11
+	ADDQ   R8, R11
+	ANDQ   AX, R13
+	ADDQ   R10, R13
+	ANDQ   AX, R15
+	ADDQ   R12, R15
+
+	// Store output
+	MOVQ out+0(FP), AX
+	MOVQ DI, (AX)
+	MOVQ R9, 8(AX)
+	MOVQ R11, 16(AX)
+	MOVQ R13, 24(AX)
+	MOVQ R15, 32(AX)
+	RET
+
+// func feSquare(out *Element, a *Element)
+TEXT ·feSquare(SB), NOSPLIT, $0-16
+	MOVQ a+8(FP), CX
+
+	// r0 = l0×l0
+	MOVQ (CX), AX
+	MULQ (CX)
+	MOVQ AX, SI
+	MOVQ DX, BX
+
+	// r0 += 38×l1×l4
+	MOVQ   8(CX), AX
+	IMUL3Q $0x26, AX, AX
+	MULQ   32(CX)
+	ADDQ   AX, SI
+	ADCQ   DX, BX
+
+	// r0 += 38×l2×l3
+	MOVQ   16(CX), AX
+	IMUL3Q $0x26, AX, AX
+	MULQ   24(CX)
+	ADDQ   AX, SI
+	ADCQ   DX, BX
+
+	// r1 = 2×l0×l1
+	MOVQ (CX), AX
+	SHLQ $0x01, AX
+	MULQ 8(CX)
+	MOVQ AX, R8
+	MOVQ DX, DI
+
+	// r1 += 38×l2×l4
+	MOVQ   16(CX), AX
+	IMUL3Q $0x26, AX, AX
+	MULQ   32(CX)
+	ADDQ   AX, R8
+	ADCQ   DX, DI
+
+	// r1 += 19×l3×l3
+	MOVQ   24(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   24(CX)
+	ADDQ   AX, R8
+	ADCQ   DX, DI
+
+	// r2 = 2×l0×l2
+	MOVQ (CX), AX
+	SHLQ $0x01, AX
+	MULQ 16(CX)
+	MOVQ AX, R10
+	MOVQ DX, R9
+
+	// r2 += l1×l1
+	MOVQ 8(CX), AX
+	MULQ 8(CX)
+	ADDQ AX, R10
+	ADCQ DX, R9
+
+	// r2 += 38×l3×l4
+	MOVQ   24(CX), AX
+	IMUL3Q $0x26, AX, AX
+	MULQ   32(CX)
+	ADDQ   AX, R10
+	ADCQ   DX, R9
+
+	// r3 = 2×l0×l3
+	MOVQ (CX), AX
+	SHLQ $0x01, AX
+	MULQ 24(CX)
+	MOVQ AX, R12
+	MOVQ DX, R11
+
+	// r3 += 2×l1×l2
+	MOVQ   8(CX), AX
+	IMUL3Q $0x02, AX, AX
+	MULQ   16(CX)
+	ADDQ   AX, R12
+	ADCQ   DX, R11
+
+	// r3 += 19×l4×l4
+	MOVQ   32(CX), AX
+	IMUL3Q $0x13, AX, AX
+	MULQ   32(CX)
+	ADDQ   AX, R12
+	ADCQ   DX, R11
+
+	// r4 = 2×l0×l4
+	MOVQ (CX), AX
+	SHLQ $0x01, AX
+	MULQ 32(CX)
+	MOVQ AX, R14
+	MOVQ DX, R13
+
+	// r4 += 2×l1×l3
+	MOVQ   8(CX), AX
+	IMUL3Q $0x02, AX, AX
+	MULQ   24(CX)
+	ADDQ   AX, R14
+	ADCQ   DX, R13
+
+	// r4 += l2×l2
+	MOVQ 16(CX), AX
+	MULQ 16(CX)
+	ADDQ AX, R14
+	ADCQ DX, R13
+
+	// First reduction chain
+	MOVQ   $0x0007ffffffffffff, AX
+	SHLQ   $0x0d, SI, BX
+	SHLQ   $0x0d, R8, DI
+	SHLQ   $0x0d, R10, R9
+	SHLQ   $0x0d, R12, R11
+	SHLQ   $0x0d, R14, R13
+	ANDQ   AX, SI
+	IMUL3Q $0x13, R13, R13
+	ADDQ   R13, SI
+	ANDQ   AX, R8
+	ADDQ   BX, R8
+	ANDQ   AX, R10
+	ADDQ   DI, R10
+	ANDQ   AX, R12
+	ADDQ   R9, R12
+	ANDQ   AX, R14
+	ADDQ   R11, R14
+
+	// Second reduction chain (carryPropagate)
+	MOVQ   SI, BX
+	SHRQ   $0x33, BX
+	MOVQ   R8, DI
+	SHRQ   $0x33, DI
+	MOVQ   R10, R9
+	SHRQ   $0x33, R9
+	MOVQ   R12, R11
+	SHRQ   $0x33, R11
+	MOVQ   R14, R13
+	SHRQ   $0x33, R13
+	ANDQ   AX, SI
+	IMUL3Q $0x13, R13, R13
+	ADDQ   R13, SI
+	ANDQ   AX, R8
+	ADDQ   BX, R8
+	ANDQ   AX, R10
+	ADDQ   DI, R10
+	ANDQ   AX, R12
+	ADDQ   R9, R12
+	ANDQ   AX, R14
+	ADDQ   R11, R14
+
+	// Store output
+	MOVQ out+0(FP), AX
+	MOVQ SI, (AX)
+	MOVQ R8, 8(AX)
+	MOVQ R10, 16(AX)
+	MOVQ R12, 24(AX)
+	MOVQ R14, 32(AX)
+	RET

vendor/filippo.io/edwards25519/field/fe_amd64_noasm.go

@@ -0,0 +1,12 @@
+// Copyright (c) 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !amd64 || !gc || purego
+// +build !amd64 !gc purego
+
+package field
+
+func feMul(v, x, y *Element) { feMulGeneric(v, x, y) }
+
+func feSquare(v, x *Element) { feSquareGeneric(v, x) }

vendor/filippo.io/edwards25519/field/fe_arm64.go

@@ -0,0 +1,16 @@
+// Copyright (c) 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build arm64 && gc && !purego
+// +build arm64,gc,!purego
+
+package field
+
+//go:noescape
+func carryPropagate(v *Element)
+
+func (v *Element) carryPropagate() *Element {
+	carryPropagate(v)
+	return v
+}

vendor/filippo.io/edwards25519/field/fe_arm64.s

@@ -0,0 +1,42 @@
+// Copyright (c) 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build arm64 && gc && !purego
+
+#include "textflag.h"
+
+// carryPropagate works exactly like carryPropagateGeneric and uses the
+// same AND, ADD, and LSR+MADD instructions emitted by the compiler, but
+// avoids loading R0-R4 twice and uses LDP and STP.
+//
+// See https://golang.org/issues/43145 for the main compiler issue.
+//
+// func carryPropagate(v *Element)
+TEXT ·carryPropagate(SB),NOFRAME|NOSPLIT,$0-8
+	MOVD v+0(FP), R20
+
+	LDP 0(R20), (R0, R1)
+	LDP 16(R20), (R2, R3)
+	MOVD 32(R20), R4
+
+	AND $0x7ffffffffffff, R0, R10
+	AND $0x7ffffffffffff, R1, R11
+	AND $0x7ffffffffffff, R2, R12
+	AND $0x7ffffffffffff, R3, R13
+	AND $0x7ffffffffffff, R4, R14
+
+	ADD R0>>51, R11, R11
+	ADD R1>>51, R12, R12
+	ADD R2>>51, R13, R13
+	ADD R3>>51, R14, R14
+	// R4>>51 * 19 + R10 -> R10
+	LSR $51, R4, R21
+	MOVD $19, R22
+	MADD R22, R10, R21, R10
+
+	STP (R10, R11), 0(R20)
+	STP (R12, R13), 16(R20)
+	MOVD R14, 32(R20)
+
+	RET

vendor/filippo.io/edwards25519/field/fe_arm64_noasm.go

@@ -0,0 +1,12 @@
+// Copyright (c) 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !arm64 || !gc || purego
+// +build !arm64 !gc purego
+
+package field
+
+func (v *Element) carryPropagate() *Element {
+	return v.carryPropagateGeneric()
+}

vendor/filippo.io/edwards25519/field/fe_extra.go

@@ -0,0 +1,50 @@
+// Copyright (c) 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package field
+
+import "errors"
+
+// This file contains additional functionality that is not included in the
+// upstream crypto/ed25519/edwards25519/field package.
+
+// SetWideBytes sets v to x, where x is a 64-byte little-endian encoding, which
+// is reduced modulo the field order. If x is not of the right length,
+// SetWideBytes returns nil and an error, and the receiver is unchanged.
+//
+// SetWideBytes is not necessary to select a uniformly distributed value, and is
+// only provided for compatibility: SetBytes can be used instead as the chance
+// of bias is less than 2⁻²⁵⁰.
+func (v *Element) SetWideBytes(x []byte) (*Element, error) {
+	if len(x) != 64 {
+		return nil, errors.New("edwards25519: invalid SetWideBytes input size")
+	}
+
+	// Split the 64 bytes into two elements, and extract the most significant
+	// bit of each, which is ignored by SetBytes.
+	lo, _ := new(Element).SetBytes(x[:32])
+	loMSB := uint64(x[31] >> 7)
+	hi, _ := new(Element).SetBytes(x[32:])
+	hiMSB := uint64(x[63] >> 7)
+
+	// The output we want is
+	//
+	//   v = lo + loMSB * 2²⁵⁵ + hi * 2²⁵⁶ + hiMSB * 2⁵¹¹
+	//
+	// which applying the reduction identity comes out to
+	//
+	//   v = lo + loMSB * 19 + hi * 2 * 19 + hiMSB * 2 * 19²
+	//
+	// l0 will be the sum of a 52 bits value (lo.l0), plus a 5 bits value
+	// (loMSB * 19), a 6 bits value (hi.l0 * 2 * 19), and a 10 bits value
+	// (hiMSB * 2 * 19²), so it fits in a uint64.
+
+	v.l0 = lo.l0 + loMSB*19 + hi.l0*2*19 + hiMSB*2*19*19
+	v.l1 = lo.l1 + hi.l1*2*19
+	v.l2 = lo.l2 + hi.l2*2*19
+	v.l3 = lo.l3 + hi.l3*2*19
+	v.l4 = lo.l4 + hi.l4*2*19
+
+	return v.carryPropagate(), nil
+}

vendor/filippo.io/edwards25519/field/fe_generic.go

@@ -0,0 +1,266 @@
+// Copyright (c) 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package field
+
+import "math/bits"
+
+// uint128 holds a 128-bit number as two 64-bit limbs, for use with the
+// bits.Mul64 and bits.Add64 intrinsics.
+type uint128 struct {
+	lo, hi uint64
+}
+
+// mul64 returns a * b.
+func mul64(a, b uint64) uint128 {
+	hi, lo := bits.Mul64(a, b)
+	return uint128{lo, hi}
+}
+
+// addMul64 returns v + a * b.
+func addMul64(v uint128, a, b uint64) uint128 {
+	hi, lo := bits.Mul64(a, b)
+	lo, c := bits.Add64(lo, v.lo, 0)
+	hi, _ = bits.Add64(hi, v.hi, c)
+	return uint128{lo, hi}
+}
+
+// shiftRightBy51 returns a >> 51. a is assumed to be at most 115 bits.
+func shiftRightBy51(a uint128) uint64 {
+	return (a.hi << (64 - 51)) | (a.lo >> 51)
+}
+
+func feMulGeneric(v, a, b *Element) {
+	a0 := a.l0
+	a1 := a.l1
+	a2 := a.l2
+	a3 := a.l3
+	a4 := a.l4
+
+	b0 := b.l0
+	b1 := b.l1
+	b2 := b.l2
+	b3 := b.l3
+	b4 := b.l4
+
+	// Limb multiplication works like pen-and-paper columnar multiplication, but
+	// with 51-bit limbs instead of digits.
+	//
+	//                          a4   a3   a2   a1   a0  x
+	//                          b4   b3   b2   b1   b0  =
+	//                         ------------------------
+	//                        a4b0 a3b0 a2b0 a1b0 a0b0  +
+	//                   a4b1 a3b1 a2b1 a1b1 a0b1       +
+	//              a4b2 a3b2 a2b2 a1b2 a0b2            +
+	//         a4b3 a3b3 a2b3 a1b3 a0b3                 +
+	//    a4b4 a3b4 a2b4 a1b4 a0b4                      =
+	//   ----------------------------------------------
+	//      r8   r7   r6   r5   r4   r3   r2   r1   r0
+	//
+	// We can then use the reduction identity (a * 2²⁵⁵ + b = a * 19 + b) to
+	// reduce the limbs that would overflow 255 bits. r5 * 2²⁵⁵ becomes 19 * r5,
+	// r6 * 2³⁰⁶ becomes 19 * r6 * 2⁵¹, etc.
+	//
+	// Reduction can be carried out simultaneously to multiplication. For
+	// example, we do not compute r5: whenever the result of a multiplication
+	// belongs to r5, like a1b4, we multiply it by 19 and add the result to r0.
+	//
+	//            a4b0    a3b0    a2b0    a1b0    a0b0  +
+	//            a3b1    a2b1    a1b1    a0b1 19×a4b1  +
+	//            a2b2    a1b2    a0b2 19×a4b2 19×a3b2  +
+	//            a1b3    a0b3 19×a4b3 19×a3b3 19×a2b3  +
+	//            a0b4 19×a4b4 19×a3b4 19×a2b4 19×a1b4  =
+	//           --------------------------------------
+	//              r4      r3      r2      r1      r0
+	//
+	// Finally we add up the columns into wide, overlapping limbs.
+
+	a1_19 := a1 * 19
+	a2_19 := a2 * 19
+	a3_19 := a3 * 19
+	a4_19 := a4 * 19
+
+	// r0 = a0×b0 + 19×(a1×b4 + a2×b3 + a3×b2 + a4×b1)
+	r0 := mul64(a0, b0)
+	r0 = addMul64(r0, a1_19, b4)
+	r0 = addMul64(r0, a2_19, b3)
+	r0 = addMul64(r0, a3_19, b2)
+	r0 = addMul64(r0, a4_19, b1)
+
+	// r1 = a0×b1 + a1×b0 + 19×(a2×b4 + a3×b3 + a4×b2)
+	r1 := mul64(a0, b1)
+	r1 = addMul64(r1, a1, b0)
+	r1 = addMul64(r1, a2_19, b4)
+	r1 = addMul64(r1, a3_19, b3)
+	r1 = addMul64(r1, a4_19, b2)
+
+	// r2 = a0×b2 + a1×b1 + a2×b0 + 19×(a3×b4 + a4×b3)
+	r2 := mul64(a0, b2)
+	r2 = addMul64(r2, a1, b1)
+	r2 = addMul64(r2, a2, b0)
+	r2 = addMul64(r2, a3_19, b4)
+	r2 = addMul64(r2, a4_19, b3)
+
+	// r3 = a0×b3 + a1×b2 + a2×b1 + a3×b0 + 19×a4×b4
+	r3 := mul64(a0, b3)
+	r3 = addMul64(r3, a1, b2)
+	r3 = addMul64(r3, a2, b1)
+	r3 = addMul64(r3, a3, b0)
+	r3 = addMul64(r3, a4_19, b4)
+
+	// r4 = a0×b4 + a1×b3 + a2×b2 + a3×b1 + a4×b0
+	r4 := mul64(a0, b4)
+	r4 = addMul64(r4, a1, b3)
+	r4 = addMul64(r4, a2, b2)
+	r4 = addMul64(r4, a3, b1)
+	r4 = addMul64(r4, a4, b0)
+
+	// After the multiplication, we need to reduce (carry) the five coefficients
+	// to obtain a result with limbs that are at most slightly larger than 2⁵¹,
+	// to respect the Element invariant.
+	//
+	// Overall, the reduction works the same as carryPropagate, except with
+	// wider inputs: we take the carry for each coefficient by shifting it right
+	// by 51, and add it to the limb above it. The top carry is multiplied by 19
+	// according to the reduction identity and added to the lowest limb.
+	//
+	// The largest coefficient (r0) will be at most 111 bits, which guarantees
+	// that all carries are at most 111 - 51 = 60 bits, which fits in a uint64.
+	//
+	//     r0 = a0×b0 + 19×(a1×b4 + a2×b3 + a3×b2 + a4×b1)
+	//     r0 < 2⁵²×2⁵² + 19×(2⁵²×2⁵² + 2⁵²×2⁵² + 2⁵²×2⁵² + 2⁵²×2⁵²)
+	//     r0 < (1 + 19 × 4) × 2⁵² × 2⁵²
+	//     r0 < 2⁷ × 2⁵² × 2⁵²
+	//     r0 < 2¹¹¹
+	//
+	// Moreover, the top coefficient (r4) is at most 107 bits, so c4 is at most
+	// 56 bits, and c4 * 19 is at most 61 bits, which again fits in a uint64 and
+	// allows us to easily apply the reduction identity.
+	//
+	//     r4 = a0×b4 + a1×b3 + a2×b2 + a3×b1 + a4×b0
+	//     r4 < 5 × 2⁵² × 2⁵²
+	//     r4 < 2¹⁰⁷
+	//
+
+	c0 := shiftRightBy51(r0)
+	c1 := shiftRightBy51(r1)
+	c2 := shiftRightBy51(r2)
+	c3 := shiftRightBy51(r3)
+	c4 := shiftRightBy51(r4)
+
+	rr0 := r0.lo&maskLow51Bits + c4*19
+	rr1 := r1.lo&maskLow51Bits + c0
+	rr2 := r2.lo&maskLow51Bits + c1
+	rr3 := r3.lo&maskLow51Bits + c2
+	rr4 := r4.lo&maskLow51Bits + c3
+
+	// Now all coefficients fit into 64-bit registers but are still too large to
+	// be passed around as an Element. We therefore do one last carry chain,
+	// where the carries will be small enough to fit in the wiggle room above 2⁵¹.
+	*v = Element{rr0, rr1, rr2, rr3, rr4}
+	v.carryPropagate()
+}
+
+func feSquareGeneric(v, a *Element) {
+	l0 := a.l0
+	l1 := a.l1
+	l2 := a.l2
+	l3 := a.l3
+	l4 := a.l4
+
+	// Squaring works precisely like multiplication above, but thanks to its
+	// symmetry we get to group a few terms together.
+	//
+	//                          l4   l3   l2   l1   l0  x
+	//                          l4   l3   l2   l1   l0  =
+	//                         ------------------------
+	//                        l4l0 l3l0 l2l0 l1l0 l0l0  +
+	//                   l4l1 l3l1 l2l1 l1l1 l0l1       +
+	//              l4l2 l3l2 l2l2 l1l2 l0l2            +
+	//         l4l3 l3l3 l2l3 l1l3 l0l3                 +
+	//    l4l4 l3l4 l2l4 l1l4 l0l4                      =
+	//   ----------------------------------------------
+	//      r8   r7   r6   r5   r4   r3   r2   r1   r0
+	//
+	//            l4l0    l3l0    l2l0    l1l0    l0l0  +
+	//            l3l1    l2l1    l1l1    l0l1 19×l4l1  +
+	//            l2l2    l1l2    l0l2 19×l4l2 19×l3l2  +
+	//            l1l3    l0l3 19×l4l3 19×l3l3 19×l2l3  +
+	//            l0l4 19×l4l4 19×l3l4 19×l2l4 19×l1l4  =
+	//           --------------------------------------
+	//              r4      r3      r2      r1      r0
+	//
+	// With precomputed 2×, 19×, and 2×19× terms, we can compute each limb with
+	// only three Mul64 and four Add64, instead of five and eight.
+
+	l0_2 := l0 * 2
+	l1_2 := l1 * 2
+
+	l1_38 := l1 * 38
+	l2_38 := l2 * 38
+	l3_38 := l3 * 38
+
+	l3_19 := l3 * 19
+	l4_19 := l4 * 19
+
+	// r0 = l0×l0 + 19×(l1×l4 + l2×l3 + l3×l2 + l4×l1) = l0×l0 + 19×2×(l1×l4 + l2×l3)
+	r0 := mul64(l0, l0)
+	r0 = addMul64(r0, l1_38, l4)
+	r0 = addMul64(r0, l2_38, l3)
+
+	// r1 = l0×l1 + l1×l0 + 19×(l2×l4 + l3×l3 + l4×l2) = 2×l0×l1 + 19×2×l2×l4 + 19×l3×l3
+	r1 := mul64(l0_2, l1)
+	r1 = addMul64(r1, l2_38, l4)
+	r1 = addMul64(r1, l3_19, l3)
+
+	// r2 = l0×l2 + l1×l1 + l2×l0 + 19×(l3×l4 + l4×l3) = 2×l0×l2 + l1×l1 + 19×2×l3×l4
+	r2 := mul64(l0_2, l2)
+	r2 = addMul64(r2, l1, l1)
+	r2 = addMul64(r2, l3_38, l4)
+
+	// r3 = l0×l3 + l1×l2 + l2×l1 + l3×l0 + 19×l4×l4 = 2×l0×l3 + 2×l1×l2 + 19×l4×l4
+	r3 := mul64(l0_2, l3)
+	r3 = addMul64(r3, l1_2, l2)
+	r3 = addMul64(r3, l4_19, l4)
+
+	// r4 = l0×l4 + l1×l3 + l2×l2 + l3×l1 + l4×l0 = 2×l0×l4 + 2×l1×l3 + l2×l2
+	r4 := mul64(l0_2, l4)
+	r4 = addMul64(r4, l1_2, l3)
+	r4 = addMul64(r4, l2, l2)
+
+	c0 := shiftRightBy51(r0)
+	c1 := shiftRightBy51(r1)
+	c2 := shiftRightBy51(r2)
+	c3 := shiftRightBy51(r3)
+	c4 := shiftRightBy51(r4)
+
+	rr0 := r0.lo&maskLow51Bits + c4*19
+	rr1 := r1.lo&maskLow51Bits + c0
+	rr2 := r2.lo&maskLow51Bits + c1
+	rr3 := r3.lo&maskLow51Bits + c2
+	rr4 := r4.lo&maskLow51Bits + c3
+
+	*v = Element{rr0, rr1, rr2, rr3, rr4}
+	v.carryPropagate()
+}
+
+// carryPropagateGeneric brings the limbs below 52 bits by applying the reduction
+// identity (a * 2²⁵⁵ + b = a * 19 + b) to the l4 carry.
+func (v *Element) carryPropagateGeneric() *Element {
+	c0 := v.l0 >> 51
+	c1 := v.l1 >> 51
+	c2 := v.l2 >> 51
+	c3 := v.l3 >> 51
+	c4 := v.l4 >> 51
+
+	// c4 is at most 64 - 51 = 13 bits, so c4*19 is at most 18 bits, and
+	// the final l0 will be at most 52 bits. Similarly for the rest.
+	v.l0 = v.l0&maskLow51Bits + c4*19
+	v.l1 = v.l1&maskLow51Bits + c0
+	v.l2 = v.l2&maskLow51Bits + c1
+	v.l3 = v.l3&maskLow51Bits + c2
+	v.l4 = v.l4&maskLow51Bits + c3
+
+	return v
+}

vendor/filippo.io/edwards25519/scalar.go

@@ -0,0 +1,343 @@
+// Copyright (c) 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+import (
+	"encoding/binary"
+	"errors"
+)
+
+// A Scalar is an integer modulo
+//
+//	l = 2^252 + 27742317777372353535851937790883648493
+//
+// which is the prime order of the edwards25519 group.
+//
+// This type works similarly to math/big.Int, and all arguments and
+// receivers are allowed to alias.
+//
+// The zero value is a valid zero element.
+type Scalar struct {
+	// s is the scalar in the Montgomery domain, in the format of the
+	// fiat-crypto implementation.
+	s fiatScalarMontgomeryDomainFieldElement
+}
+
+// The field implementation in scalar_fiat.go is generated by the fiat-crypto
+// project (https://github.com/mit-plv/fiat-crypto) at version v0.0.9 (23d2dbc)
+// from a formally verified model.
+//
+// fiat-crypto code comes under the following license.
+//
+//     Copyright (c) 2015-2020 The fiat-crypto Authors. All rights reserved.
+//
+//     Redistribution and use in source and binary forms, with or without
+//     modification, are permitted provided that the following conditions are
+//     met:
+//
+//         1. Redistributions of source code must retain the above copyright
+//         notice, this list of conditions and the following disclaimer.
+//
+//     THIS SOFTWARE IS PROVIDED BY the fiat-crypto authors "AS IS"
+//     AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+//     THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+//     PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design,
+//     Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+//     EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+//     PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+//     PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+//     LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+//     NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+//     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+// NewScalar returns a new zero Scalar.
+func NewScalar() *Scalar {
+	return &Scalar{}
+}
+
+// MultiplyAdd sets s = x * y + z mod l, and returns s. It is equivalent to
+// using Multiply and then Add.
+func (s *Scalar) MultiplyAdd(x, y, z *Scalar) *Scalar {
+	// Make a copy of z in case it aliases s.
+	zCopy := new(Scalar).Set(z)
+	return s.Multiply(x, y).Add(s, zCopy)
+}
+
+// Add sets s = x + y mod l, and returns s.
+func (s *Scalar) Add(x, y *Scalar) *Scalar {
+	// s = 1 * x + y mod l
+	fiatScalarAdd(&s.s, &x.s, &y.s)
+	return s
+}
+
+// Subtract sets s = x - y mod l, and returns s.
+func (s *Scalar) Subtract(x, y *Scalar) *Scalar {
+	// s = -1 * y + x mod l
+	fiatScalarSub(&s.s, &x.s, &y.s)
+	return s
+}
+
+// Negate sets s = -x mod l, and returns s.
+func (s *Scalar) Negate(x *Scalar) *Scalar {
+	// s = -1 * x + 0 mod l
+	fiatScalarOpp(&s.s, &x.s)
+	return s
+}
+
+// Multiply sets s = x * y mod l, and returns s.
+func (s *Scalar) Multiply(x, y *Scalar) *Scalar {
+	// s = x * y + 0 mod l
+	fiatScalarMul(&s.s, &x.s, &y.s)
+	return s
+}
+
+// Set sets s = x, and returns s.
+func (s *Scalar) Set(x *Scalar) *Scalar {
+	*s = *x
+	return s
+}
+
+// SetUniformBytes sets s = x mod l, where x is a 64-byte little-endian integer.
+// If x is not of the right length, SetUniformBytes returns nil and an error,
+// and the receiver is unchanged.
+//
+// SetUniformBytes can be used to set s to a uniformly distributed value given
+// 64 uniformly distributed random bytes.
+func (s *Scalar) SetUniformBytes(x []byte) (*Scalar, error) {
+	if len(x) != 64 {
+		return nil, errors.New("edwards25519: invalid SetUniformBytes input length")
+	}
+
+	// We have a value x of 512 bits, but our fiatScalarFromBytes function
+	// expects an input lower than l, which is a little over 252 bits.
+	//
+	// Instead of writing a reduction function that operates on wider inputs, we
+	// can interpret x as the sum of three shorter values a, b, and c.
+	//
+	//    x = a + b * 2^168 + c * 2^336  mod l
+	//
+	// We then precompute 2^168 and 2^336 modulo l, and perform the reduction
+	// with two multiplications and two additions.
+
+	s.setShortBytes(x[:21])
+	t := new(Scalar).setShortBytes(x[21:42])
+	s.Add(s, t.Multiply(t, scalarTwo168))
+	t.setShortBytes(x[42:])
+	s.Add(s, t.Multiply(t, scalarTwo336))
+
+	return s, nil
+}
+
+// scalarTwo168 and scalarTwo336 are 2^168 and 2^336 modulo l, encoded as a
+// fiatScalarMontgomeryDomainFieldElement, which is a little-endian 4-limb value
+// in the 2^256 Montgomery domain.
+var scalarTwo168 = &Scalar{s: [4]uint64{0x5b8ab432eac74798, 0x38afddd6de59d5d7,
+	0xa2c131b399411b7c, 0x6329a7ed9ce5a30}}
+var scalarTwo336 = &Scalar{s: [4]uint64{0xbd3d108e2b35ecc5, 0x5c3a3718bdf9c90b,
+	0x63aa97a331b4f2ee, 0x3d217f5be65cb5c}}
+
+// setShortBytes sets s = x mod l, where x is a little-endian integer shorter
+// than 32 bytes.
+func (s *Scalar) setShortBytes(x []byte) *Scalar {
+	if len(x) >= 32 {
+		panic("edwards25519: internal error: setShortBytes called with a long string")
+	}
+	var buf [32]byte
+	copy(buf[:], x)
+	fiatScalarFromBytes((*[4]uint64)(&s.s), &buf)
+	fiatScalarToMontgomery(&s.s, (*fiatScalarNonMontgomeryDomainFieldElement)(&s.s))
+	return s
+}
+
+// SetCanonicalBytes sets s = x, where x is a 32-byte little-endian encoding of
+// s, and returns s. If x is not a canonical encoding of s, SetCanonicalBytes
+// returns nil and an error, and the receiver is unchanged.
+func (s *Scalar) SetCanonicalBytes(x []byte) (*Scalar, error) {
+	if len(x) != 32 {
+		return nil, errors.New("invalid scalar length")
+	}
+	if !isReduced(x) {
+		return nil, errors.New("invalid scalar encoding")
+	}
+
+	fiatScalarFromBytes((*[4]uint64)(&s.s), (*[32]byte)(x))
+	fiatScalarToMontgomery(&s.s, (*fiatScalarNonMontgomeryDomainFieldElement)(&s.s))
+
+	return s, nil
+}
+
+// scalarMinusOneBytes is l - 1 in little endian.
+var scalarMinusOneBytes = [32]byte{236, 211, 245, 92, 26, 99, 18, 88, 214, 156, 247, 162, 222, 249, 222, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16}
+
+// isReduced returns whether the given scalar in 32-byte little endian encoded
+// form is reduced modulo l.
+func isReduced(s []byte) bool {
+	if len(s) != 32 {
+		return false
+	}
+
+	for i := len(s) - 1; i >= 0; i-- {
+		switch {
+		case s[i] > scalarMinusOneBytes[i]:
+			return false
+		case s[i] < scalarMinusOneBytes[i]:
+			return true
+		}
+	}
+	return true
+}
+
+// SetBytesWithClamping applies the buffer pruning described in RFC 8032,
+// Section 5.1.5 (also known as clamping) and sets s to the result. The input
+// must be 32 bytes, and it is not modified. If x is not of the right length,
+// SetBytesWithClamping returns nil and an error, and the receiver is unchanged.
+//
+// Note that since Scalar values are always reduced modulo the prime order of
+// the curve, the resulting value will not preserve any of the cofactor-clearing
+// properties that clamping is meant to provide. It will however work as
+// expected as long as it is applied to points on the prime order subgroup, like
+// in Ed25519. In fact, it is lost to history why RFC 8032 adopted the
+// irrelevant RFC 7748 clamping, but it is now required for compatibility.
+func (s *Scalar) SetBytesWithClamping(x []byte) (*Scalar, error) {
+	// The description above omits the purpose of the high bits of the clamping
+	// for brevity, but those are also lost to reductions, and are also
+	// irrelevant to edwards25519 as they protect against a specific
+	// implementation bug that was once observed in a generic Montgomery ladder.
+	if len(x) != 32 {
+		return nil, errors.New("edwards25519: invalid SetBytesWithClamping input length")
+	}
+
+	// We need to use the wide reduction from SetUniformBytes, since clamping
+	// sets the 2^254 bit, making the value higher than the order.
+	var wideBytes [64]byte
+	copy(wideBytes[:], x[:])
+	wideBytes[0] &= 248
+	wideBytes[31] &= 63
+	wideBytes[31] |= 64
+	return s.SetUniformBytes(wideBytes[:])
+}
+
+// Bytes returns the canonical 32-byte little-endian encoding of s.
+func (s *Scalar) Bytes() []byte {
+	// This function is outlined to make the allocations inline in the caller
+	// rather than happen on the heap.
+	var encoded [32]byte
+	return s.bytes(&encoded)
+}
+
+func (s *Scalar) bytes(out *[32]byte) []byte {
+	var ss fiatScalarNonMontgomeryDomainFieldElement
+	fiatScalarFromMontgomery(&ss, &s.s)
+	fiatScalarToBytes(out, (*[4]uint64)(&ss))
+	return out[:]
+}
+
+// Equal returns 1 if s and t are equal, and 0 otherwise.
+func (s *Scalar) Equal(t *Scalar) int {
+	var diff fiatScalarMontgomeryDomainFieldElement
+	fiatScalarSub(&diff, &s.s, &t.s)
+	var nonzero uint64
+	fiatScalarNonzero(&nonzero, (*[4]uint64)(&diff))
+	nonzero |= nonzero >> 32
+	nonzero |= nonzero >> 16
+	nonzero |= nonzero >> 8
+	nonzero |= nonzero >> 4
+	nonzero |= nonzero >> 2
+	nonzero |= nonzero >> 1
+	return int(^nonzero) & 1
+}
+
+// nonAdjacentForm computes a width-w non-adjacent form for this scalar.
+//
+// w must be between 2 and 8, or nonAdjacentForm will panic.
+func (s *Scalar) nonAdjacentForm(w uint) [256]int8 {
+	// This implementation is adapted from the one
+	// in curve25519-dalek and is documented there:
+	// https://github.com/dalek-cryptography/curve25519-dalek/blob/f630041af28e9a405255f98a8a93adca18e4315b/src/scalar.rs#L800-L871
+	b := s.Bytes()
+	if b[31] > 127 {
+		panic("scalar has high bit set illegally")
+	}
+	if w < 2 {
+		panic("w must be at least 2 by the definition of NAF")
+	} else if w > 8 {
+		panic("NAF digits must fit in int8")
+	}
+
+	var naf [256]int8
+	var digits [5]uint64
+
+	for i := 0; i < 4; i++ {
+		digits[i] = binary.LittleEndian.Uint64(b[i*8:])
+	}
+
+	width := uint64(1 << w)
+	windowMask := uint64(width - 1)
+
+	pos := uint(0)
+	carry := uint64(0)
+	for pos < 256 {
+		indexU64 := pos / 64
+		indexBit := pos % 64
+		var bitBuf uint64
+		if indexBit < 64-w {
+			// This window's bits are contained in a single u64
+			bitBuf = digits[indexU64] >> indexBit
+		} else {
+			// Combine the current 64 bits with bits from the next 64
+			bitBuf = (digits[indexU64] >> indexBit) | (digits[1+indexU64] << (64 - indexBit))
+		}
+
+		// Add carry into the current window
+		window := carry + (bitBuf & windowMask)
+
+		if window&1 == 0 {
+			// If the window value is even, preserve the carry and continue.
+			// Why is the carry preserved?
+			// If carry == 0 and window & 1 == 0,
+			//    then the next carry should be 0
+			// If carry == 1 and window & 1 == 0,
+			//    then bit_buf & 1 == 1 so the next carry should be 1
+			pos += 1
+			continue
+		}
+
+		if window < width/2 {
+			carry = 0
+			naf[pos] = int8(window)
+		} else {
+			carry = 1
+			naf[pos] = int8(window) - int8(width)
+		}
+
+		pos += w
+	}
+	return naf
+}
+
+func (s *Scalar) signedRadix16() [64]int8 {
+	b := s.Bytes()
+	if b[31] > 127 {
+		panic("scalar has high bit set illegally")
+	}
+
+	var digits [64]int8
+
+	// Compute unsigned radix-16 digits:
+	for i := 0; i < 32; i++ {
+		digits[2*i] = int8(b[i] & 15)
+		digits[2*i+1] = int8((b[i] >> 4) & 15)
+	}
+
+	// Recenter coefficients:
+	for i := 0; i < 63; i++ {
+		carry := (digits[i] + 8) >> 4
+		digits[i] -= carry << 4
+		digits[i+1] += carry
+	}
+
+	return digits
+}

vendor/filippo.io/edwards25519/scalarmult.go

@@ -0,0 +1,214 @@
+// Copyright (c) 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+import "sync"
+
+// basepointTable is a set of 32 affineLookupTables, where table i is generated
+// from 256i * basepoint. It is precomputed the first time it's used.
+func basepointTable() *[32]affineLookupTable {
+	basepointTablePrecomp.initOnce.Do(func() {
+		p := NewGeneratorPoint()
+		for i := 0; i < 32; i++ {
+			basepointTablePrecomp.table[i].FromP3(p)
+			for j := 0; j < 8; j++ {
+				p.Add(p, p)
+			}
+		}
+	})
+	return &basepointTablePrecomp.table
+}
+
+var basepointTablePrecomp struct {
+	table    [32]affineLookupTable
+	initOnce sync.Once
+}
+
+// ScalarBaseMult sets v = x * B, where B is the canonical generator, and
+// returns v.
+//
+// The scalar multiplication is done in constant time.
+func (v *Point) ScalarBaseMult(x *Scalar) *Point {
+	basepointTable := basepointTable()
+
+	// Write x = sum(x_i * 16^i) so  x*B = sum( B*x_i*16^i )
+	// as described in the Ed25519 paper
+	//
+	// Group even and odd coefficients
+	// x*B     = x_0*16^0*B + x_2*16^2*B + ... + x_62*16^62*B
+	//         + x_1*16^1*B + x_3*16^3*B + ... + x_63*16^63*B
+	// x*B     = x_0*16^0*B + x_2*16^2*B + ... + x_62*16^62*B
+	//    + 16*( x_1*16^0*B + x_3*16^2*B + ... + x_63*16^62*B)
+	//
+	// We use a lookup table for each i to get x_i*16^(2*i)*B
+	// and do four doublings to multiply by 16.
+	digits := x.signedRadix16()
+
+	multiple := &affineCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+
+	// Accumulate the odd components first
+	v.Set(NewIdentityPoint())
+	for i := 1; i < 64; i += 2 {
+		basepointTable[i/2].SelectInto(multiple, digits[i])
+		tmp1.AddAffine(v, multiple)
+		v.fromP1xP1(tmp1)
+	}
+
+	// Multiply by 16
+	tmp2.FromP3(v)       // tmp2 =    v in P2 coords
+	tmp1.Double(tmp2)    // tmp1 =  2*v in P1xP1 coords
+	tmp2.FromP1xP1(tmp1) // tmp2 =  2*v in P2 coords
+	tmp1.Double(tmp2)    // tmp1 =  4*v in P1xP1 coords
+	tmp2.FromP1xP1(tmp1) // tmp2 =  4*v in P2 coords
+	tmp1.Double(tmp2)    // tmp1 =  8*v in P1xP1 coords
+	tmp2.FromP1xP1(tmp1) // tmp2 =  8*v in P2 coords
+	tmp1.Double(tmp2)    // tmp1 = 16*v in P1xP1 coords
+	v.fromP1xP1(tmp1)    // now v = 16*(odd components)
+
+	// Accumulate the even components
+	for i := 0; i < 64; i += 2 {
+		basepointTable[i/2].SelectInto(multiple, digits[i])
+		tmp1.AddAffine(v, multiple)
+		v.fromP1xP1(tmp1)
+	}
+
+	return v
+}
+
+// ScalarMult sets v = x * q, and returns v.
+//
+// The scalar multiplication is done in constant time.
+func (v *Point) ScalarMult(x *Scalar, q *Point) *Point {
+	checkInitialized(q)
+
+	var table projLookupTable
+	table.FromP3(q)
+
+	// Write x = sum(x_i * 16^i)
+	// so  x*Q = sum( Q*x_i*16^i )
+	//         = Q*x_0 + 16*(Q*x_1 + 16*( ... + Q*x_63) ... )
+	//           <------compute inside out---------
+	//
+	// We use the lookup table to get the x_i*Q values
+	// and do four doublings to compute 16*Q
+	digits := x.signedRadix16()
+
+	// Unwrap first loop iteration to save computing 16*identity
+	multiple := &projCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+	table.SelectInto(multiple, digits[63])
+
+	v.Set(NewIdentityPoint())
+	tmp1.Add(v, multiple) // tmp1 = x_63*Q in P1xP1 coords
+	for i := 62; i >= 0; i-- {
+		tmp2.FromP1xP1(tmp1) // tmp2 =    (prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  2*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  2*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  4*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  4*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 =  8*(prev) in P1xP1 coords
+		tmp2.FromP1xP1(tmp1) // tmp2 =  8*(prev) in P2 coords
+		tmp1.Double(tmp2)    // tmp1 = 16*(prev) in P1xP1 coords
+		v.fromP1xP1(tmp1)    //    v = 16*(prev) in P3 coords
+		table.SelectInto(multiple, digits[i])
+		tmp1.Add(v, multiple) // tmp1 = x_i*Q + 16*(prev) in P1xP1 coords
+	}
+	v.fromP1xP1(tmp1)
+	return v
+}
+
+// basepointNafTable is the nafLookupTable8 for the basepoint.
+// It is precomputed the first time it's used.
+func basepointNafTable() *nafLookupTable8 {
+	basepointNafTablePrecomp.initOnce.Do(func() {
+		basepointNafTablePrecomp.table.FromP3(NewGeneratorPoint())
+	})
+	return &basepointNafTablePrecomp.table
+}
+
+var basepointNafTablePrecomp struct {
+	table    nafLookupTable8
+	initOnce sync.Once
+}
+
+// VarTimeDoubleScalarBaseMult sets v = a * A + b * B, where B is the canonical
+// generator, and returns v.
+//
+// Execution time depends on the inputs.
+func (v *Point) VarTimeDoubleScalarBaseMult(a *Scalar, A *Point, b *Scalar) *Point {
+	checkInitialized(A)
+
+	// Similarly to the single variable-base approach, we compute
+	// digits and use them with a lookup table.  However, because
+	// we are allowed to do variable-time operations, we don't
+	// need constant-time lookups or constant-time digit
+	// computations.
+	//
+	// So we use a non-adjacent form of some width w instead of
+	// radix 16.  This is like a binary representation (one digit
+	// for each binary place) but we allow the digits to grow in
+	// magnitude up to 2^{w-1} so that the nonzero digits are as
+	// sparse as possible.  Intuitively, this "condenses" the
+	// "mass" of the scalar onto sparse coefficients (meaning
+	// fewer additions).
+
+	basepointNafTable := basepointNafTable()
+	var aTable nafLookupTable5
+	aTable.FromP3(A)
+	// Because the basepoint is fixed, we can use a wider NAF
+	// corresponding to a bigger table.
+	aNaf := a.nonAdjacentForm(5)
+	bNaf := b.nonAdjacentForm(8)
+
+	// Find the first nonzero coefficient.
+	i := 255
+	for j := i; j >= 0; j-- {
+		if aNaf[j] != 0 || bNaf[j] != 0 {
+			break
+		}
+	}
+
+	multA := &projCached{}
+	multB := &affineCached{}
+	tmp1 := &projP1xP1{}
+	tmp2 := &projP2{}
+	tmp2.Zero()
+
+	// Move from high to low bits, doubling the accumulator
+	// at each iteration and checking whether there is a nonzero
+	// coefficient to look up a multiple of.
+	for ; i >= 0; i-- {
+		tmp1.Double(tmp2)
+
+		// Only update v if we have a nonzero coeff to add in.
+		if aNaf[i] > 0 {
+			v.fromP1xP1(tmp1)
+			aTable.SelectInto(multA, aNaf[i])
+			tmp1.Add(v, multA)
+		} else if aNaf[i] < 0 {
+			v.fromP1xP1(tmp1)
+			aTable.SelectInto(multA, -aNaf[i])
+			tmp1.Sub(v, multA)
+		}
+
+		if bNaf[i] > 0 {
+			v.fromP1xP1(tmp1)
+			basepointNafTable.SelectInto(multB, bNaf[i])
+			tmp1.AddAffine(v, multB)
+		} else if bNaf[i] < 0 {
+			v.fromP1xP1(tmp1)
+			basepointNafTable.SelectInto(multB, -bNaf[i])
+			tmp1.SubAffine(v, multB)
+		}
+
+		tmp2.FromP1xP1(tmp1)
+	}
+
+	v.fromP2(tmp2)
+	return v
+}

vendor/filippo.io/edwards25519/tables.go

@@ -0,0 +1,129 @@
+// Copyright (c) 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+import (
+	"crypto/subtle"
+)
+
+// A dynamic lookup table for variable-base, constant-time scalar muls.
+type projLookupTable struct {
+	points [8]projCached
+}
+
+// A precomputed lookup table for fixed-base, constant-time scalar muls.
+type affineLookupTable struct {
+	points [8]affineCached
+}
+
+// A dynamic lookup table for variable-base, variable-time scalar muls.
+type nafLookupTable5 struct {
+	points [8]projCached
+}
+
+// A precomputed lookup table for fixed-base, variable-time scalar muls.
+type nafLookupTable8 struct {
+	points [64]affineCached
+}
+
+// Constructors.
+
+// Builds a lookup table at runtime. Fast.
+func (v *projLookupTable) FromP3(q *Point) {
+	// Goal: v.points[i] = (i+1)*Q, i.e., Q, 2Q, ..., 8Q
+	// This allows lookup of -8Q, ..., -Q, 0, Q, ..., 8Q
+	v.points[0].FromP3(q)
+	tmpP3 := Point{}
+	tmpP1xP1 := projP1xP1{}
+	for i := 0; i < 7; i++ {
+		// Compute (i+1)*Q as Q + i*Q and convert to a projCached
+		// This is needlessly complicated because the API has explicit
+		// receivers instead of creating stack objects and relying on RVO
+		v.points[i+1].FromP3(tmpP3.fromP1xP1(tmpP1xP1.Add(q, &v.points[i])))
+	}
+}
+
+// This is not optimised for speed; fixed-base tables should be precomputed.
+func (v *affineLookupTable) FromP3(q *Point) {
+	// Goal: v.points[i] = (i+1)*Q, i.e., Q, 2Q, ..., 8Q
+	// This allows lookup of -8Q, ..., -Q, 0, Q, ..., 8Q
+	v.points[0].FromP3(q)
+	tmpP3 := Point{}
+	tmpP1xP1 := projP1xP1{}
+	for i := 0; i < 7; i++ {
+		// Compute (i+1)*Q as Q + i*Q and convert to affineCached
+		v.points[i+1].FromP3(tmpP3.fromP1xP1(tmpP1xP1.AddAffine(q, &v.points[i])))
+	}
+}
+
+// Builds a lookup table at runtime. Fast.
+func (v *nafLookupTable5) FromP3(q *Point) {
+	// Goal: v.points[i] = (2*i+1)*Q, i.e., Q, 3Q, 5Q, ..., 15Q
+	// This allows lookup of -15Q, ..., -3Q, -Q, 0, Q, 3Q, ..., 15Q
+	v.points[0].FromP3(q)
+	q2 := Point{}
+	q2.Add(q, q)
+	tmpP3 := Point{}
+	tmpP1xP1 := projP1xP1{}
+	for i := 0; i < 7; i++ {
+		v.points[i+1].FromP3(tmpP3.fromP1xP1(tmpP1xP1.Add(&q2, &v.points[i])))
+	}
+}
+
+// This is not optimised for speed; fixed-base tables should be precomputed.
+func (v *nafLookupTable8) FromP3(q *Point) {
+	v.points[0].FromP3(q)
+	q2 := Point{}
+	q2.Add(q, q)
+	tmpP3 := Point{}
+	tmpP1xP1 := projP1xP1{}
+	for i := 0; i < 63; i++ {
+		v.points[i+1].FromP3(tmpP3.fromP1xP1(tmpP1xP1.AddAffine(&q2, &v.points[i])))
+	}
+}
+
+// Selectors.
+
+// Set dest to x*Q, where -8 <= x <= 8, in constant time.
+func (v *projLookupTable) SelectInto(dest *projCached, x int8) {
+	// Compute xabs = |x|
+	xmask := x >> 7
+	xabs := uint8((x + xmask) ^ xmask)
+
+	dest.Zero()
+	for j := 1; j <= 8; j++ {
+		// Set dest = j*Q if |x| = j
+		cond := subtle.ConstantTimeByteEq(xabs, uint8(j))
+		dest.Select(&v.points[j-1], dest, cond)
+	}
+	// Now dest = |x|*Q, conditionally negate to get x*Q
+	dest.CondNeg(int(xmask & 1))
+}
+
+// Set dest to x*Q, where -8 <= x <= 8, in constant time.
+func (v *affineLookupTable) SelectInto(dest *affineCached, x int8) {
+	// Compute xabs = |x|
+	xmask := x >> 7
+	xabs := uint8((x + xmask) ^ xmask)
+
+	dest.Zero()
+	for j := 1; j <= 8; j++ {
+		// Set dest = j*Q if |x| = j
+		cond := subtle.ConstantTimeByteEq(xabs, uint8(j))
+		dest.Select(&v.points[j-1], dest, cond)
+	}
+	// Now dest = |x|*Q, conditionally negate to get x*Q
+	dest.CondNeg(int(xmask & 1))
+}
+
+// Given odd x with 0 < x < 2^4, return x*Q (in variable time).
+func (v *nafLookupTable5) SelectInto(dest *projCached, x int8) {
+	*dest = v.points[x/2]
+}
+
+// Given odd x with 0 < x < 2^7, return x*Q (in variable time).
+func (v *nafLookupTable8) SelectInto(dest *affineCached, x int8) {
+	*dest = v.points[x/2]
+}

vendor/github.com/antchfx/htmlquery/.travis.yml

@@ -1,16 +0,0 @@
-language: go
-
-go:
-  - 1.9.x
-  - 1.12.x
-  - 1.13.x
-
-install:
-  - go get golang.org/x/net/html/charset
-  - go get golang.org/x/net/html
-  - go get github.com/antchfx/xpath
-  - go get github.com/mattn/goveralls
-  - go get github.com/golang/groupcache
-
-script:
-  - $HOME/gopath/bin/goveralls -service=travis-ci

vendor/github.com/antchfx/htmlquery/README.md

@@ -1,26 +1,32 @@
-htmlquery
+# htmlquery
-====
+
-[![Build Status](https://travis-ci.org/antchfx/htmlquery.svg?branch=master)](https://travis-ci.org/antchfx/htmlquery)
+[![Build Status](https://github.com/antchfx/htmlquery/actions/workflows/testing.yml/badge.svg)](https://github.com/antchfx/htmlquery/actions/workflows/testing.yml)
-[![Coverage Status](https://coveralls.io/repos/github/antchfx/htmlquery/badge.svg?branch=master)](https://coveralls.io/github/antchfx/htmlquery?branch=master)
 [![GoDoc](https://godoc.org/github.com/antchfx/htmlquery?status.svg)](https://godoc.org/github.com/antchfx/htmlquery)
 [![Go Report Card](https://goreportcard.com/badge/github.com/antchfx/htmlquery)](https://goreportcard.com/report/github.com/antchfx/htmlquery)
 
-Overview
+# Overview
-====
 
 `htmlquery` is an XPath query package for HTML, lets you extract data or evaluate from HTML documents by an XPath expression.
 
-`htmlquery` built-in the query object caching feature based on [LRU](https://godoc.org/github.com/golang/groupcache/lru), this feature will caching the recently used XPATH query string. Enable query caching can avoid re-compile XPath expression each query. 
+`htmlquery` built-in the query object caching feature based on [LRU](https://godoc.org/github.com/golang/groupcache/lru), this feature will caching the recently used XPATH query string. Enable query caching can avoid re-compile XPath expression each query.
 
-Installation
+You can visit this page to learn about the supported XPath(1.0/2.0) syntax. https://github.com/antchfx/xpath
-====
+
+# XPath query packages for Go
+
+| Name                                              | Description                               |
+| ------------------------------------------------- | ----------------------------------------- |
+| [htmlquery](https://github.com/antchfx/htmlquery) | XPath query package for the HTML document |
+| [xmlquery](https://github.com/antchfx/xmlquery)   | XPath query package for the XML document  |
+| [jsonquery](https://github.com/antchfx/jsonquery) | XPath query package for the JSON document |
+
+# Installation
 
 ```
 go get github.com/antchfx/htmlquery
 ```
 
-Getting Started
+# Getting Started
-====
 
 #### Query, returns matched elements or error.
 
@@ -60,15 +66,15 @@ list := htmlquery.Find(doc, "//a")
 #### Find all A elements that have `href` attribute.
 
 ```go
-list := range htmlquery.Find(doc, "//a[@href]")	
+list := htmlquery.Find(doc, "//a[@href]")
 ```
 
 #### Find all A elements with `href` attribute and only return `href` value.
 
 ```go
-list := range htmlquery.Find(doc, "//a/@href")	
+list := htmlquery.Find(doc, "//a/@href")
-for n := range list{
+for _ , n := range list{
-	fmt.Println(htmlquery.InnerText(n)) // output @href value without A element.
+	fmt.Println(htmlquery.InnerText(n)) // output @href value
 }
 ```
 
@@ -78,6 +84,14 @@ for n := range list{
 a := htmlquery.FindOne(doc, "//a[3]")
 ```
 
+### Find children element (img) under A `href` and print the source
+
+```go
+a := htmlquery.FindOne(doc, "//a")
+img := htmlquery.FindOne(a, "//img")
+fmt.Prinln(htmlquery.SelectAttr(img, "src")) // output @src value
+```
+
 #### Evaluate the number of all IMG element.
 
 ```go
@@ -86,9 +100,29 @@ v := expr.Evaluate(htmlquery.CreateXPathNavigator(doc)).(float64)
 fmt.Printf("total count is %f", v)
 ```
 
+# Quick Starts
 
-FAQ
+```go
-====
+func main() {
+	doc, err := htmlquery.LoadURL("https://www.bing.com/search?q=golang")
+	if err != nil {
+		panic(err)
+	}
+	// Find all news item.
+	list, err := htmlquery.QueryAll(doc, "//ol/li")
+	if err != nil {
+		panic(err)
+	}
+	for i, n := range list {
+		a := htmlquery.FindOne(n, "//a")
+		if a != nil {
+		    fmt.Printf("%d %s(%s)\n", i, htmlquery.InnerText(a), htmlquery.SelectAttr(a, "href"))
+		}
+	}
+}
+```
+
+# FAQ
 
 #### `Find()` vs `QueryAll()`, which is better?
 
@@ -117,52 +151,6 @@ BenchmarkDisableSelectorCache-4           500000              3162 ns/op
 htmlquery.DisableSelectorCache = true
 ```
 
-Changelogs
+# Questions
-===
 
-2019-11-19 
-- Add built-in query object cache feature, avoid re-compilation for the same query string. [#16](https://github.com/antchfx/htmlquery/issues/16)
-- Added LoadDoc [18](https://github.com/antchfx/htmlquery/pull/18)
-
-2019-10-05 
-- Add new methods that compatible with invalid XPath expression error: `QueryAll` and `Query`.
-- Add `QuerySelector` and `QuerySelectorAll` methods, supported reused your query object.
-
-2019-02-04
-- [#7](https://github.com/antchfx/htmlquery/issues/7) Removed deprecated `FindEach()` and `FindEachWithBreak()` methods.
-
-2018-12-28
-- Avoid adding duplicate elements to list for `Find()` method. [#6](https://github.com/antchfx/htmlquery/issues/6)
-
-Tutorial
-===
-
-```go
-func main() {
-	doc, err := htmlquery.LoadURL("https://www.bing.com/search?q=golang")
-	if err != nil {
-		panic(err)
-	}
-	// Find all news item.
-	list, err := htmlquery.QueryAll(doc, "//ol/li")
-	if err != nil {
-		panic(err)
-	}
-	for i, n := range list {
-		a := htmlquery.FindOne(n, "//a")
-		fmt.Printf("%d %s(%s)\n", i, htmlquery.InnerText(a), htmlquery.SelectAttr(a, "href"))
-	}
-}
-```
-
-List of supported XPath query packages
-===
-| Name                                              | Description                               |
-| ------------------------------------------------- | ----------------------------------------- |
-| [htmlquery](https://github.com/antchfx/htmlquery) | XPath query package for the HTML document |
-| [xmlquery](https://github.com/antchfx/xmlquery)   | XPath query package for the XML document  |
-| [jsonquery](https://github.com/antchfx/jsonquery) | XPath query package for the JSON document |
-
-Questions
-===
 Please let me know if you have any questions.

vendor/github.com/antchfx/htmlquery/query.go

@@ -5,11 +5,13 @@ package htmlquery
 
 import (
 	"bufio"
-	"bytes"
+	"compress/gzip"
+	"compress/zlib"
 	"fmt"
 	"io"
 	"net/http"
 	"os"
+	"strings"
 
 	"github.com/antchfx/xpath"
 	"golang.org/x/net/html"
@@ -55,10 +57,10 @@ func QueryAll(top *html.Node, expr string) ([]*html.Node, error) {
 	return nodes, nil
 }
 
-// Query searches the html.Node that matches by the specified XPath expr,
+// Query runs the given XPath expression against the given html.Node and
-// and return the first element of matched html.Node.
+// returns the first matching html.Node, or nil if no matches are found.
 //
-// Return an error if the expression `expr` cannot be parsed.
+// Returns an error if the expression `expr` cannot be parsed.
 func Query(top *html.Node, expr string) (*html.Node, error) {
 	exp, err := getQuery(expr)
 	if err != nil {
@@ -83,25 +85,49 @@ func QuerySelectorAll(top *html.Node, selector *xpath.Expr) []*html.Node {
 	for t.MoveNext() {
 		nav := t.Current().(*NodeNavigator)
 		n := getCurrentNode(nav)
-		// avoid adding duplicate nodes.
-		if len(elems) > 0 && (elems[0] == n || (nav.NodeType() == xpath.AttributeNode &&
-			nav.LocalName() == elems[0].Data && nav.Value() == InnerText(elems[0]))) {
-			continue
-		}
 		elems = append(elems, n)
 	}
 	return elems
 }
 
-// LoadURL loads the HTML document from the specified URL.
+// LoadURL loads the HTML document from the specified URL. Default enabling gzip on a HTTP request.
 func LoadURL(url string) (*html.Node, error) {
-	resp, err := http.Get(url)
+	req, err := http.NewRequest("GET", url, nil)
 	if err != nil {
 		return nil, err
 	}
-	defer resp.Body.Close()
+	// Enable gzip compression.
+	req.Header.Add("Accept-Encoding", "gzip")
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	var reader io.ReadCloser
 
-	r, err := charset.NewReader(resp.Body, resp.Header.Get("Content-Type"))
+	defer func() {
+		if reader != nil {
+			reader.Close()
+		}
+	}()
+	encoding := resp.Header.Get("Content-Encoding")
+	switch encoding {
+	case "gzip":
+		reader, err = gzip.NewReader(resp.Body)
+		if err != nil {
+			return nil, err
+		}
+	case "deflate":
+		reader, err = zlib.NewReader(resp.Body)
+		if err != nil {
+			return nil, err
+		}
+	case "":
+		reader = resp.Body
+	default:
+		return nil, fmt.Errorf("%s compression is not support", encoding)
+	}
+
+	r, err := charset.NewReader(reader, resp.Header.Get("Content-Type"))
 	if err != nil {
 		return nil, err
 	}
@@ -143,23 +169,23 @@ func Parse(r io.Reader) (*html.Node, error) {
 
 // InnerText returns the text between the start and end tags of the object.
 func InnerText(n *html.Node) string {
-	var output func(*bytes.Buffer, *html.Node)
+	var output func(*strings.Builder, *html.Node)
-	output = func(buf *bytes.Buffer, n *html.Node) {
+	output = func(b *strings.Builder, n *html.Node) {
 		switch n.Type {
 		case html.TextNode:
-			buf.WriteString(n.Data)
+			b.WriteString(n.Data)
 			return
 		case html.CommentNode:
 			return
 		}
 		for child := n.FirstChild; child != nil; child = child.NextSibling {
-			output(buf, child)
+			output(b, child)
 		}
 	}
 
-	var buf bytes.Buffer
+	var b strings.Builder
-	output(&buf, n)
+	output(&b, n)
-	return buf.String()
+	return b.String()
 }
 
 // SelectAttr returns the attribute value with the specified name.
@@ -179,17 +205,30 @@ func SelectAttr(n *html.Node, name string) (val string) {
 	return
 }
 
-// OutputHTML returns the text including tags name.
+// ExistsAttr returns whether attribute with specified name exists.
-func OutputHTML(n *html.Node, self bool) string {
+func ExistsAttr(n *html.Node, name string) bool {
-	var buf bytes.Buffer
+	if n == nil {
-	if self {
+		return false
-		html.Render(&buf, n)
+	}
-	} else {
+	for _, attr := range n.Attr {
-		for n := n.FirstChild; n != nil; n = n.NextSibling {
+		if attr.Key == name {
-			html.Render(&buf, n)
+			return true
 		}
 	}
-	return buf.String()
+	return false
+}
+
+// OutputHTML returns the text including tags name.
+func OutputHTML(n *html.Node, self bool) string {
+	var b strings.Builder
+	if self {
+		html.Render(&b, n)
+	} else {
+		for n := n.FirstChild; n != nil; n = n.NextSibling {
+			html.Render(&b, n)
+		}
+	}
+	return b.String()
 }
 
 type NodeNavigator struct {

vendor/github.com/antchfx/xpath/.travis.yml

@@ -1,12 +0,0 @@
-language: go
-
-go:
-  - 1.6
-  - 1.9
-  - '1.10'
-
-install:
-  - go get github.com/mattn/goveralls
-
-script:
-  - $HOME/gopath/bin/goveralls -service=travis-ci

vendor/github.com/antchfx/xpath/README.md

@@ -1,14 +1,13 @@
-XPath
+# XPath
-====
+
 [![GoDoc](https://godoc.org/github.com/antchfx/xpath?status.svg)](https://godoc.org/github.com/antchfx/xpath)
 [![Coverage Status](https://coveralls.io/repos/github/antchfx/xpath/badge.svg?branch=master)](https://coveralls.io/github/antchfx/xpath?branch=master)
-[![Build Status](https://travis-ci.org/antchfx/xpath.svg?branch=master)](https://travis-ci.org/antchfx/xpath)
+[![Build Status](https://github.com/antchfx/xpath/actions/workflows/testing.yml/badge.svg)](https://github.com/antchfx/xpath/actions/workflows/testing.yml)
 [![Go Report Card](https://goreportcard.com/badge/github.com/antchfx/xpath)](https://goreportcard.com/report/github.com/antchfx/xpath)
 
 XPath is Go package provides selecting nodes from XML, HTML or other documents using XPath expression.
 
-Implementation
+# Implementation
-===
 
 - [htmlquery](https://github.com/antchfx/htmlquery) - an XPath query package for HTML document
 
@@ -16,8 +15,7 @@ Implementation
 
 - [jsonquery](https://github.com/antchfx/jsonquery) - an XPath query package for JSON document
 
-Supported Features
+# Supported Features
-===
 
 #### The basic XPath patterns.
 
@@ -49,7 +47,7 @@ Supported Features
 
 - `a/b` : For each node matching a, add the nodes matching b to the result.
 
-- `a//b` : For each node matching a, add the descendant nodes matching b to the result. 
+- `a//b` : For each node matching a, add the descendant nodes matching b to the result.
 
 - `//b` : Returns elements in the entire document matching b.
 
@@ -57,24 +55,28 @@ Supported Features
 
 - `(a, b, c)` : Evaluates each of its operands and concatenates the resulting sequences, in order, into a single result sequence
 
+- `(a/b)` : Selects all matches nodes as grouping set.
 
-#### Node Axes 
+#### Node Axes
 
 - `child::*` : The child axis selects children of the current node.
 
+  - `child::node()`: Selects all the children of the context node.
+  - `child::text()`: Selects all text node children of the context node.
+
 - `descendant::*` : The descendant axis selects descendants of the current node. It is equivalent to '//'.
 
 - `descendant-or-self::*` : Selects descendants including the current node.
 
-- `attribute::*` : Selects attributes of the current element. It is equivalent to @*
+- `attribute::*` : Selects attributes of the current element. It is equivalent to @\*
 
 - `following-sibling::*` : Selects nodes after the current node.
 
 - `preceding-sibling::*` : Selects nodes before the current node.
 
-- `following::*` : Selects the first matching node following in document order, excluding descendants. 
+- `following::*` : Selects the first matching node following in document order, excluding descendants.
 
-- `preceding::*` : Selects the first matching node preceding in document order, excluding ancestors. 
+- `preceding::*` : Selects the first matching node preceding in document order, excluding ancestors.
 
 - `parent::*` : Selects the parent if it matches. The '..' pattern from the core is equivalent to 'parent::node()'.
 
@@ -86,27 +88,27 @@ Supported Features
 
 #### Expressions
 
- The gxpath supported three types: number, boolean, string.
+The gxpath supported three types: number, boolean, string.
 
 - `path` : Selects nodes based on the path.
 
 - `a = b` : Standard comparisons.
 
-    * a = b	    True if a equals b.
+  - `a = b` : True if a equals b.
-    * a != b	True if a is not equal to b.
+  - `a != b` : True if a is not equal to b.
-    * a < b	    True if a is less than b.
+  - `a < b` : True if a is less than b.
-    * a <= b	True if a is less than or equal to b.
+  - `a <= b` : True if a is less than or equal to b.
-    * a > b	    True if a is greater than b.
+  - `a > b` : True if a is greater than b.
-    * a >= b	True if a is greater than or equal to b.
+  - `a >= b` : True if a is greater than or equal to b.
 
 - `a + b` : Arithmetic expressions.
 
-    * `- a`	Unary minus
+  - `- a` Unary minus
-    * a + b	Add
+  - `a + b` : Addition
-    * a - b	Substract
+  - `a - b` : Subtraction
-    * a * b	Multiply
+  - `a * b` : Multiplication
-    * a div b	Divide
+  - `a div b` : Division
-    * a mod b	Floating point mod, like Java.
+  - `a mod b` : Modulus (division remainder)
 
 - `a or b` : Boolean `or` operation.
 
@@ -116,58 +118,50 @@ Supported Features
 
 - `fun(arg1, ..., argn)` : Function calls:
 
-| Function | Supported |
+| Function                | Supported |
-| --- | --- |
+| ----------------------- | --------- |
-`boolean()`| ✓ |
+| `boolean()`             | ✓         |
-`ceiling()`| ✓ |
+| `ceiling()`             | ✓         |
-`choose()`| ✗ |
+| `choose()`              | ✗         |
-`concat()`| ✓ |
+| `concat()`              | ✓         |
-`contains()`| ✓ |
+| `contains()`            | ✓         |
-`count()`| ✓ |
+| `count()`               | ✓         |
-`current()`| ✗ |
+| `current()`             | ✗         |
-`document()`| ✗ |
+| `document()`            | ✗         |
-`element-available()`| ✗ |
+| `element-available()`   | ✗         |
-`ends-with()`| ✓ |
+| `ends-with()`           | ✓         |
-`false()`| ✓ |
+| `false()`               | ✓         |
-`floor()`| ✓ |
+| `floor()`               | ✓         |
-`format-number()`| ✗ |
+| `format-number()`       | ✗         |
-`function-available()`| ✗ |
+| `function-available()`  | ✗         |
-`generate-id()`| ✗ |
+| `generate-id()`         | ✗         |
-`id()`| ✗ |
+| `id()`                  | ✗         |
-`key()`| ✗ |
+| `key()`                 | ✗         |
-`lang()`| ✗ |
+| `lang()`                | ✗         |
-`last()`| ✓ |
+| `last()`                | ✓         |
-`local-name()`| ✓ |
+| `local-name()`          | ✓         |
-`matches()`| ✓ |
+| `lower-case()`[^1]      | ✓         |
-`name()`| ✓ |
+| `matches()`             | ✓         |
-`namespace-uri()`| ✓ |
+| `name()`                | ✓         |
-`normalize-space()`| ✓ |
+| `namespace-uri()`       | ✓         |
-`not()`| ✓ |
+| `normalize-space()`     | ✓         |
-`number()`| ✓ |
+| `not()`                 | ✓         |
-`position()`| ✓ |
+| `number()`              | ✓         |
-`replace()`| ✓ |
+| `position()`            | ✓         |
-`reverse()`| ✓ |
+| `replace()`             | ✓         |
-`round()`| ✓ |
+| `reverse()`             | ✓         |
-`starts-with()`| ✓ |
+| `round()`               | ✓         |
-`string()`| ✓ |
+| `starts-with()`         | ✓         |
-`string-length()`| ✓ |
+| `string()`              | ✓         |
-`substring()`| ✓ |
+| `string-join()`[^1]     | ✓         |
-`substring-after()`| ✓ |
+| `string-length()`       | ✓         |
-`substring-before()`| ✓ |
+| `substring()`           | ✓         |
-`sum()`| ✓ |
+| `substring-after()`     | ✓         |
-`system-property()`| ✗ |
+| `substring-before()`    | ✓         |
-`translate()`| ✓ |
+| `sum()`                 | ✓         |
-`true()`| ✓ |
+| `system-property()`     | ✗         |
-`unparsed-entity-url()` | ✗ |
+| `translate()`           | ✓         |
+| `true()`                | ✓         |
+| `unparsed-entity-url()` | ✗         |
 
-Changelogs
+[^1]: XPath-2.0 expression
-===
-
-2019-03-19 
-- optimize XPath `|` operation performance. [#33](https://github.com/antchfx/xpath/issues/33). Tips: suggest split into multiple subquery if you have a lot of `|` operations.
-
-2019-01-29
--  improvement `normalize-space` function. [#32](https://github.com/antchfx/xpath/issues/32)
-
-2018-12-07
--  supports XPath 2.0 Sequence expressions. [#30](https://github.com/antchfx/xpath/pull/30) by [@minherz](https://github.com/minherz).

vendor/github.com/antchfx/xpath/build.go

@@ -7,43 +7,54 @@ import (
 
 type flag int
 
-const (
+var flagsEnum = struct {
-	noneFlag flag = iota
+	None      flag
-	filterFlag
+	SmartDesc flag
-)
+	PosFilter flag
+	Filter    flag
+	Condition flag
+}{
+	None:      0,
+	SmartDesc: 1,
+	PosFilter: 2,
+	Filter:    4,
+	Condition: 8,
+}
+
+type builderProp int
+
+var builderProps = struct {
+	None        builderProp
+	PosFilter   builderProp
+	HasPosition builderProp
+	HasLast     builderProp
+	NonFlat     builderProp
+}{
+	None:        0,
+	PosFilter:   1,
+	HasPosition: 2,
+	HasLast:     4,
+	NonFlat:     8,
+}
 
 // builder provides building an XPath expressions.
 type builder struct {
-	depth      int
+	parseDepth int
-	flag       flag
 	firstInput query
 }
 
 // axisPredicate creates a predicate to predicating for this axis node.
 func axisPredicate(root *axisNode) func(NodeNavigator) bool {
-	// get current axix node type.
-	typ := ElementNode
-	switch root.AxeType {
-	case "attribute":
-		typ = AttributeNode
-	case "self", "parent":
-		typ = allNode
-	default:
-		switch root.Prop {
-		case "comment":
-			typ = CommentNode
-		case "text":
-			typ = TextNode
-			//	case "processing-instruction":
-		//	typ = ProcessingInstructionNode
-		case "node":
-			typ = allNode
-		}
-	}
 	nametest := root.LocalName != "" || root.Prefix != ""
 	predicate := func(n NodeNavigator) bool {
-		if typ == n.NodeType() || typ == allNode || typ == TextNode {
+		if root.typeTest == n.NodeType() || root.typeTest == allNode {
 			if nametest {
+				type namespaceURL interface {
+					NamespaceURL() string
+				}
+				if ns, ok := n.(namespaceURL); ok && root.hasNamespaceURI {
+					return root.LocalName == n.LocalName() && root.namespaceURI == ns.NamespaceURL()
+				}
 				if root.LocalName == n.LocalName() && root.Prefix == n.Prefix() {
 					return true
 				}
@@ -57,80 +68,88 @@ func axisPredicate(root *axisNode) func(NodeNavigator) bool {
 	return predicate
 }
 
-// processAxisNode processes a query for the XPath axis node.
+// processAxis processes a query for the XPath axis node.
-func (b *builder) processAxisNode(root *axisNode) (query, error) {
+func (b *builder) processAxis(root *axisNode, flags flag, props *builderProp) (query, error) {
 	var (
-		err       error
+		err      error
-		qyInput   query
+		qyInput  query
-		qyOutput  query
+		qyOutput query
-		predicate = axisPredicate(root)
 	)
+	b.firstInput = nil
+	predicate := axisPredicate(root)
 
 	if root.Input == nil {
 		qyInput = &contextQuery{}
+		*props = builderProps.None
 	} else {
-		if root.AxeType == "child" && (root.Input.Type() == nodeAxis) {
+		inputFlags := flagsEnum.None
-			if input := root.Input.(*axisNode); input.AxeType == "descendant-or-self" {
+		if (flags & flagsEnum.Filter) == 0 {
-				var qyGrandInput query
+			if root.AxisType == "child" && (root.Input.Type() == nodeAxis) {
-				if input.Input != nil {
+				if input := root.Input.(*axisNode); input.AxisType == "descendant-or-self" {
-					qyGrandInput, _ = b.processNode(input.Input)
+					var qyGrandInput query
-				} else {
+					if input.Input != nil {
-					qyGrandInput = &contextQuery{}
+						qyGrandInput, err = b.processNode(input.Input, flagsEnum.SmartDesc, props)
-				}
+						if err != nil {
-				// fix #20: https://github.com/antchfx/htmlquery/issues/20
+							return nil, err
-				filter := func(n NodeNavigator) bool {
+						}
-					v := predicate(n)
+					} else {
-					switch root.Prop {
+						qyGrandInput = &contextQuery{}
-					case "text":
-						v = v && n.NodeType() == TextNode
-					case "comment":
-						v = v && n.NodeType() == CommentNode
 					}
-					return v
+					qyOutput = &descendantQuery{name: root.LocalName, Input: qyGrandInput, Predicate: predicate, Self: false}
+					*props |= builderProps.NonFlat
+					return qyOutput, nil
 				}
-				qyOutput = &descendantQuery{Input: qyGrandInput, Predicate: filter, Self: true}
+			}
-				return qyOutput, nil
+			if root.AxisType == "descendant" || root.AxisType == "descendant-or-self" {
+				inputFlags |= flagsEnum.SmartDesc
 			}
 		}
-		qyInput, err = b.processNode(root.Input)
+
+		qyInput, err = b.processNode(root.Input, inputFlags, props)
 		if err != nil {
 			return nil, err
 		}
 	}
 
-	switch root.AxeType {
+	switch root.AxisType {
 	case "ancestor":
-		qyOutput = &ancestorQuery{Input: qyInput, Predicate: predicate}
+		qyOutput = &ancestorQuery{name: root.LocalName, Input: qyInput, Predicate: predicate}
+		*props |= builderProps.NonFlat
 	case "ancestor-or-self":
-		qyOutput = &ancestorQuery{Input: qyInput, Predicate: predicate, Self: true}
+		qyOutput = &ancestorQuery{name: root.LocalName, Input: qyInput, Predicate: predicate, Self: true}
+		*props |= builderProps.NonFlat
 	case "attribute":
-		qyOutput = &attributeQuery{Input: qyInput, Predicate: predicate}
+		qyOutput = &attributeQuery{name: root.LocalName, Input: qyInput, Predicate: predicate}
 	case "child":
-		filter := func(n NodeNavigator) bool {
+		if (*props & builderProps.NonFlat) == 0 {
-			v := predicate(n)
+			qyOutput = &childQuery{name: root.LocalName, Input: qyInput, Predicate: predicate}
-			switch root.Prop {
+		} else {
-			case "text":
+			qyOutput = &cachedChildQuery{name: root.LocalName, Input: qyInput, Predicate: predicate}
-				v = v && n.NodeType() == TextNode
-			case "node":
-				v = v && (n.NodeType() == ElementNode || n.NodeType() == TextNode)
-			case "comment":
-				v = v && n.NodeType() == CommentNode
-			}
-			return v
 		}
-		qyOutput = &childQuery{Input: qyInput, Predicate: filter}
 	case "descendant":
-		qyOutput = &descendantQuery{Input: qyInput, Predicate: predicate}
+		if (flags & flagsEnum.SmartDesc) != flagsEnum.None {
+			qyOutput = &descendantOverDescendantQuery{name: root.LocalName, Input: qyInput, MatchSelf: false, Predicate: predicate}
+		} else {
+			qyOutput = &descendantQuery{name: root.LocalName, Input: qyInput, Predicate: predicate}
+		}
+		*props |= builderProps.NonFlat
 	case "descendant-or-self":
-		qyOutput = &descendantQuery{Input: qyInput, Predicate: predicate, Self: true}
+		if (flags & flagsEnum.SmartDesc) != flagsEnum.None {
+			qyOutput = &descendantOverDescendantQuery{name: root.LocalName, Input: qyInput, MatchSelf: true, Predicate: predicate}
+		} else {
+			qyOutput = &descendantQuery{name: root.LocalName, Input: qyInput, Predicate: predicate, Self: true}
+		}
+		*props |= builderProps.NonFlat
 	case "following":
 		qyOutput = &followingQuery{Input: qyInput, Predicate: predicate}
+		*props |= builderProps.NonFlat
 	case "following-sibling":
 		qyOutput = &followingQuery{Input: qyInput, Predicate: predicate, Sibling: true}
 	case "parent":
 		qyOutput = &parentQuery{Input: qyInput, Predicate: predicate}
 	case "preceding":
 		qyOutput = &precedingQuery{Input: qyInput, Predicate: predicate}
+		*props |= builderProps.NonFlat
 	case "preceding-sibling":
 		qyOutput = &precedingQuery{Input: qyInput, Predicate: predicate, Sibling: true}
 	case "self":
@@ -138,62 +157,187 @@ func (b *builder) processAxisNode(root *axisNode) (query, error) {
 	case "namespace":
 		// haha,what will you do someting??
 	default:
-		err = fmt.Errorf("unknown axe type: %s", root.AxeType)
+		err = fmt.Errorf("unknown axe type: %s", root.AxisType)
 		return nil, err
 	}
 	return qyOutput, nil
 }
 
+func canBeNumber(q query) bool {
+	if q.ValueType() != xpathResultType.Any {
+		return q.ValueType() == xpathResultType.Number
+	}
+	return true
+}
+
 // processFilterNode builds query for the XPath filter predicate.
-func (b *builder) processFilterNode(root *filterNode) (query, error) {
+func (b *builder) processFilter(root *filterNode, flags flag, props *builderProp) (query, error) {
-	b.flag |= filterFlag
+	first := (flags & flagsEnum.Filter) == 0
 
-	qyInput, err := b.processNode(root.Input)
+	qyInput, err := b.processNode(root.Input, (flags | flagsEnum.Filter), props)
 	if err != nil {
 		return nil, err
 	}
-	qyCond, err := b.processNode(root.Condition)
+	firstInput := b.firstInput
+
+	var propsCond builderProp
+	cond, err := b.processNode(root.Condition, flags, &propsCond)
 	if err != nil {
 		return nil, err
 	}
-	qyOutput := &filterQuery{Input: qyInput, Predicate: qyCond}
+
-	return qyOutput, nil
+	// Checking whether is number
+	if canBeNumber(cond) || ((propsCond & (builderProps.HasPosition | builderProps.HasLast)) != 0) {
+		propsCond |= builderProps.HasPosition
+		flags |= flagsEnum.PosFilter
+	}
+
+	if root.Input.Type() != nodeFilter {
+		*props &= ^builderProps.PosFilter
+	}
+
+	if (propsCond & builderProps.HasPosition) != 0 {
+		*props |= builderProps.PosFilter
+	}
+
+	if (propsCond & builderProps.HasPosition) != builderProps.None {
+		if (propsCond & builderProps.HasLast) != 0 {
+			// https://github.com/antchfx/xpath/issues/76
+			// https://github.com/antchfx/xpath/issues/78
+			if qyFunc, ok := cond.(*functionQuery); ok {
+				switch qyFunc.Input.(type) {
+				case *filterQuery:
+					cond = &lastFuncQuery{Input: qyFunc.Input}
+				}
+			}
+		}
+	}
+
+	merge := (qyInput.Properties() & queryProps.Merge) != 0
+	if first && firstInput != nil {
+		if merge && ((*props & builderProps.PosFilter) != 0) {
+			var (
+				rootQuery = &contextQuery{}
+				parent    query
+			)
+			switch axisQuery := firstInput.(type) {
+			case *ancestorQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *attributeQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *childQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *cachedChildQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *descendantQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *followingQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *precedingQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *parentQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *selfQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *groupQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			case *descendantOverDescendantQuery:
+				if _, ok := axisQuery.Input.(*contextQuery); !ok {
+					parent = axisQuery.Input
+					axisQuery.Input = rootQuery
+				}
+			}
+			b.firstInput = nil
+			child := &filterQuery{Input: qyInput, Predicate: cond, NoPosition: false}
+			if parent != nil {
+				return &mergeQuery{Input: parent, Child: child}, nil
+			}
+			return child, nil
+		}
+		b.firstInput = nil
+	}
+
+	resultQuery := &filterQuery{
+		Input:      qyInput,
+		Predicate:  cond,
+		NoPosition: (propsCond & builderProps.HasPosition) == 0,
+	}
+	return resultQuery, nil
 }
 
 // processFunctionNode processes query for the XPath function node.
-func (b *builder) processFunctionNode(root *functionNode) (query, error) {
+func (b *builder) processFunction(root *functionNode, props *builderProp) (query, error) {
+	// Reset builder props
+	*props = builderProps.None
+
 	var qyOutput query
 	switch root.FuncName {
+	case "lower-case":
+		arg, err := b.processNode(root.Args[0], flagsEnum.None, props)
+		if err != nil {
+			return nil, err
+		}
+		qyOutput = &functionQuery{Func: lowerCaseFunc(arg)}
 	case "starts-with":
-		arg1, err := b.processNode(root.Args[0])
+		arg1, err := b.processNode(root.Args[0], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		arg2, err := b.processNode(root.Args[1])
+		arg2, err := b.processNode(root.Args[1], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: b.firstInput, Func: startwithFunc(arg1, arg2)}
+		qyOutput = &functionQuery{Func: startwithFunc(arg1, arg2)}
 	case "ends-with":
-		arg1, err := b.processNode(root.Args[0])
+		arg1, err := b.processNode(root.Args[0], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		arg2, err := b.processNode(root.Args[1])
+		arg2, err := b.processNode(root.Args[1], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: b.firstInput, Func: endwithFunc(arg1, arg2)}
+		qyOutput = &functionQuery{Func: endwithFunc(arg1, arg2)}
 	case "contains":
-		arg1, err := b.processNode(root.Args[0])
+		arg1, err := b.processNode(root.Args[0], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		arg2, err := b.processNode(root.Args[1])
+		arg2, err := b.processNode(root.Args[1], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: b.firstInput, Func: containsFunc(arg1, arg2)}
+		qyOutput = &functionQuery{Func: containsFunc(arg1, arg2)}
 	case "matches":
 		//matches(string , pattern)
 		if len(root.Args) != 2 {
@@ -203,13 +347,19 @@ func (b *builder) processFunctionNode(root *functionNode) (query, error) {
 			arg1, arg2 query
 			err        error
 		)
-		if arg1, err = b.processNode(root.Args[0]); err != nil {
+		if arg1, err = b.processNode(root.Args[0], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		if arg2, err = b.processNode(root.Args[1]); err != nil {
+		if arg2, err = b.processNode(root.Args[1], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: b.firstInput, Func: matchesFunc(arg1, arg2)}
+		// Issue #92, testing the regular expression before.
+		if q, ok := arg2.(*constantQuery); ok {
+			if _, err = getRegexp(q.Val.(string)); err != nil {
+				return nil, fmt.Errorf("matches() got error. %v", err)
+			}
+		}
+		qyOutput = &functionQuery{Func: matchesFunc(arg1, arg2)}
 	case "substring":
 		//substring( string , start [, length] )
 		if len(root.Args) < 2 {
@@ -219,18 +369,18 @@ func (b *builder) processFunctionNode(root *functionNode) (query, error) {
 			arg1, arg2, arg3 query
 			err              error
 		)
-		if arg1, err = b.processNode(root.Args[0]); err != nil {
+		if arg1, err = b.processNode(root.Args[0], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		if arg2, err = b.processNode(root.Args[1]); err != nil {
+		if arg2, err = b.processNode(root.Args[1], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
 		if len(root.Args) == 3 {
-			if arg3, err = b.processNode(root.Args[2]); err != nil {
+			if arg3, err = b.processNode(root.Args[2], flagsEnum.None, props); err != nil {
 				return nil, err
 			}
 		}
-		qyOutput = &functionQuery{Input: b.firstInput, Func: substringFunc(arg1, arg2, arg3)}
+		qyOutput = &functionQuery{Func: substringFunc(arg1, arg2, arg3)}
 	case "substring-before", "substring-after":
 		//substring-xxxx( haystack, needle )
 		if len(root.Args) != 2 {
@@ -240,35 +390,37 @@ func (b *builder) processFunctionNode(root *functionNode) (query, error) {
 			arg1, arg2 query
 			err        error
 		)
-		if arg1, err = b.processNode(root.Args[0]); err != nil {
+		if arg1, err = b.processNode(root.Args[0], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		if arg2, err = b.processNode(root.Args[1]); err != nil {
+		if arg2, err = b.processNode(root.Args[1], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
 		qyOutput = &functionQuery{
-			Input: b.firstInput,
+			Func: substringIndFunc(arg1, arg2, root.FuncName == "substring-after"),
-			Func:  substringIndFunc(arg1, arg2, root.FuncName == "substring-after"),
 		}
 	case "string-length":
 		// string-length( [string] )
 		if len(root.Args) < 1 {
 			return nil, errors.New("xpath: string-length function must have at least one parameter")
 		}
-		arg1, err := b.processNode(root.Args[0])
+		arg1, err := b.processNode(root.Args[0], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: b.firstInput, Func: stringLengthFunc(arg1)}
+		qyOutput = &functionQuery{Func: stringLengthFunc(arg1)}
 	case "normalize-space":
-		if len(root.Args) == 0 {
+		var arg node
-			return nil, errors.New("xpath: normalize-space function must have at least one parameter")
+		if len(root.Args) > 0 {
+			arg = root.Args[0]
+		} else {
+			arg = newAxisNode("self", allNode, "", "", "", nil)
 		}
-		argQuery, err := b.processNode(root.Args[0])
+		arg1, err := b.processNode(arg, flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: argQuery, Func: normalizespaceFunc}
+		qyOutput = &functionQuery{Func: normalizespaceFunc(arg1)}
 	case "replace":
 		//replace( string , string, string )
 		if len(root.Args) != 3 {
@@ -278,16 +430,16 @@ func (b *builder) processFunctionNode(root *functionNode) (query, error) {
 			arg1, arg2, arg3 query
 			err              error
 		)
-		if arg1, err = b.processNode(root.Args[0]); err != nil {
+		if arg1, err = b.processNode(root.Args[0], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		if arg2, err = b.processNode(root.Args[1]); err != nil {
+		if arg2, err = b.processNode(root.Args[1], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		if arg3, err = b.processNode(root.Args[2]); err != nil {
+		if arg3, err = b.processNode(root.Args[2], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: b.firstInput, Func: replaceFunc(arg1, arg2, arg3)}
+		qyOutput = &functionQuery{Func: replaceFunc(arg1, arg2, arg3)}
 	case "translate":
 		//translate( string , string, string )
 		if len(root.Args) != 3 {
@@ -297,25 +449,25 @@ func (b *builder) processFunctionNode(root *functionNode) (query, error) {
 			arg1, arg2, arg3 query
 			err              error
 		)
-		if arg1, err = b.processNode(root.Args[0]); err != nil {
+		if arg1, err = b.processNode(root.Args[0], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		if arg2, err = b.processNode(root.Args[1]); err != nil {
+		if arg2, err = b.processNode(root.Args[1], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		if arg3, err = b.processNode(root.Args[2]); err != nil {
+		if arg3, err = b.processNode(root.Args[2], flagsEnum.None, props); err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: b.firstInput, Func: translateFunc(arg1, arg2, arg3)}
+		qyOutput = &functionQuery{Func: translateFunc(arg1, arg2, arg3)}
 	case "not":
 		if len(root.Args) == 0 {
 			return nil, errors.New("xpath: not function must have at least one parameter")
 		}
-		argQuery, err := b.processNode(root.Args[0])
+		argQuery, err := b.processNode(root.Args[0], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: argQuery, Func: notFunc}
+		qyOutput = &functionQuery{Func: notFunc(argQuery)}
 	case "name", "local-name", "namespace-uri":
 		if len(root.Args) > 1 {
 			return nil, fmt.Errorf("xpath: %s function must have at most one parameter", root.FuncName)
@@ -325,133 +477,147 @@ func (b *builder) processFunctionNode(root *functionNode) (query, error) {
 			err error
 		)
 		if len(root.Args) == 1 {
-			arg, err = b.processNode(root.Args[0])
+			arg, err = b.processNode(root.Args[0], flagsEnum.None, props)
 			if err != nil {
 				return nil, err
 			}
 		}
 		switch root.FuncName {
 		case "name":
-			qyOutput = &functionQuery{Input: b.firstInput, Func: nameFunc(arg)}
+			qyOutput = &functionQuery{Func: nameFunc(arg)}
 		case "local-name":
-			qyOutput = &functionQuery{Input: b.firstInput, Func: localNameFunc(arg)}
+			qyOutput = &functionQuery{Func: localNameFunc(arg)}
 		case "namespace-uri":
-			qyOutput = &functionQuery{Input: b.firstInput, Func: namespaceFunc(arg)}
+			qyOutput = &functionQuery{Func: namespaceFunc(arg)}
 		}
 	case "true", "false":
 		val := root.FuncName == "true"
 		qyOutput = &functionQuery{
-			Input: b.firstInput,
 			Func: func(_ query, _ iterator) interface{} {
 				return val
 			},
 		}
 	case "last":
-		qyOutput = &functionQuery{Input: b.firstInput, Func: lastFunc}
+		qyOutput = &functionQuery{Input: b.firstInput, Func: lastFunc()}
+		*props |= builderProps.HasLast
 	case "position":
-		qyOutput = &functionQuery{Input: b.firstInput, Func: positionFunc}
+		qyOutput = &functionQuery{Input: b.firstInput, Func: positionFunc()}
+		*props |= builderProps.HasPosition
 	case "boolean", "number", "string":
-		inp := b.firstInput
+		var inp query
 		if len(root.Args) > 1 {
 			return nil, fmt.Errorf("xpath: %s function must have at most one parameter", root.FuncName)
 		}
 		if len(root.Args) == 1 {
-			argQuery, err := b.processNode(root.Args[0])
+			argQuery, err := b.processNode(root.Args[0], flagsEnum.None, props)
 			if err != nil {
 				return nil, err
 			}
 			inp = argQuery
 		}
-		f := &functionQuery{Input: inp}
 		switch root.FuncName {
 		case "boolean":
-			f.Func = booleanFunc
+			qyOutput = &functionQuery{Func: booleanFunc(inp)}
 		case "string":
-			f.Func = stringFunc
+			qyOutput = &functionQuery{Func: stringFunc(inp)}
 		case "number":
-			f.Func = numberFunc
+			qyOutput = &functionQuery{Func: numberFunc(inp)}
 		}
-		qyOutput = f
 	case "count":
-		//if b.firstInput == nil {
-		//	return nil, errors.New("xpath: expression must evaluate to node-set")
-		//}
 		if len(root.Args) == 0 {
 			return nil, fmt.Errorf("xpath: count(node-sets) function must with have parameters node-sets")
 		}
-		argQuery, err := b.processNode(root.Args[0])
+		argQuery, err := b.processNode(root.Args[0], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: argQuery, Func: countFunc}
+		qyOutput = &functionQuery{Func: countFunc(argQuery)}
 	case "sum":
 		if len(root.Args) == 0 {
 			return nil, fmt.Errorf("xpath: sum(node-sets) function must with have parameters node-sets")
 		}
-		argQuery, err := b.processNode(root.Args[0])
+		argQuery, err := b.processNode(root.Args[0], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		qyOutput = &functionQuery{Input: argQuery, Func: sumFunc}
+		qyOutput = &functionQuery{Func: sumFunc(argQuery)}
 	case "ceiling", "floor", "round":
 		if len(root.Args) == 0 {
 			return nil, fmt.Errorf("xpath: ceiling(node-sets) function must with have parameters node-sets")
 		}
-		argQuery, err := b.processNode(root.Args[0])
+		argQuery, err := b.processNode(root.Args[0], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
-		f := &functionQuery{Input: argQuery}
 		switch root.FuncName {
 		case "ceiling":
-			f.Func = ceilingFunc
+			qyOutput = &functionQuery{Func: ceilingFunc(argQuery)}
 		case "floor":
-			f.Func = floorFunc
+			qyOutput = &functionQuery{Func: floorFunc(argQuery)}
 		case "round":
-			f.Func = roundFunc
+			qyOutput = &functionQuery{Func: roundFunc(argQuery)}
 		}
-		qyOutput = f
 	case "concat":
 		if len(root.Args) < 2 {
 			return nil, fmt.Errorf("xpath: concat() must have at least two arguments")
 		}
 		var args []query
 		for _, v := range root.Args {
-			q, err := b.processNode(v)
+			q, err := b.processNode(v, flagsEnum.None, props)
 			if err != nil {
 				return nil, err
 			}
 			args = append(args, q)
 		}
-		qyOutput = &functionQuery{Input: b.firstInput, Func: concatFunc(args...)}
+		qyOutput = &functionQuery{Func: concatFunc(args...)}
 	case "reverse":
 		if len(root.Args) == 0 {
 			return nil, fmt.Errorf("xpath: reverse(node-sets) function must with have parameters node-sets")
 		}
-		argQuery, err := b.processNode(root.Args[0])
+		argQuery, err := b.processNode(root.Args[0], flagsEnum.None, props)
 		if err != nil {
 			return nil, err
 		}
 		qyOutput = &transformFunctionQuery{Input: argQuery, Func: reverseFunc}
+	case "string-join":
+		if len(root.Args) != 2 {
+			return nil, fmt.Errorf("xpath: string-join(node-sets, separator) function requires node-set and argument")
+		}
+		input, err := b.processNode(root.Args[0], flagsEnum.None, props)
+		if err != nil {
+			return nil, err
+		}
+		arg1, err := b.processNode(root.Args[1], flagsEnum.None, props)
+		if err != nil {
+			return nil, err
+		}
+		qyOutput = &functionQuery{Func: stringJoinFunc(input, arg1)}
 	default:
 		return nil, fmt.Errorf("not yet support this function %s()", root.FuncName)
 	}
 	return qyOutput, nil
 }
 
-func (b *builder) processOperatorNode(root *operatorNode) (query, error) {
+func (b *builder) processOperator(root *operatorNode, props *builderProp) (query, error) {
-	left, err := b.processNode(root.Left)
+	var (
+		leftProp  builderProp
+		rightProp builderProp
+	)
+
+	left, err := b.processNode(root.Left, flagsEnum.None, &leftProp)
 	if err != nil {
 		return nil, err
 	}
-	right, err := b.processNode(root.Right)
+	right, err := b.processNode(root.Right, flagsEnum.None, &rightProp)
 	if err != nil {
 		return nil, err
 	}
+	*props = leftProp | rightProp
+
 	var qyOutput query
 	switch root.Op {
 	case "+", "-", "*", "div", "mod": // Numeric operator
-		var exprFunc func(interface{}, interface{}) interface{}
+		var exprFunc func(iterator, interface{}, interface{}) interface{}
 		switch root.Op {
 		case "+":
 			exprFunc = plusFunc
@@ -489,44 +655,50 @@ func (b *builder) processOperatorNode(root *operatorNode) (query, error) {
 		}
 		qyOutput = &booleanQuery{Left: left, Right: right, IsOr: isOr}
 	case "|":
+		*props |= builderProps.NonFlat
 		qyOutput = &unionQuery{Left: left, Right: right}
 	}
 	return qyOutput, nil
 }
 
-func (b *builder) processNode(root node) (q query, err error) {
+func (b *builder) processNode(root node, flags flag, props *builderProp) (q query, err error) {
-	if b.depth = b.depth + 1; b.depth > 1024 {
+	if b.parseDepth = b.parseDepth + 1; b.parseDepth > 1024 {
 		err = errors.New("the xpath expressions is too complex")
 		return
 	}
-
+	*props = builderProps.None
 	switch root.Type() {
 	case nodeConstantOperand:
 		n := root.(*operandNode)
 		q = &constantQuery{Val: n.Val}
 	case nodeRoot:
-		q = &contextQuery{Root: true}
+		q = &absoluteQuery{}
 	case nodeAxis:
-		q, err = b.processAxisNode(root.(*axisNode))
+		q, err = b.processAxis(root.(*axisNode), flags, props)
 		b.firstInput = q
 	case nodeFilter:
-		q, err = b.processFilterNode(root.(*filterNode))
+		q, err = b.processFilter(root.(*filterNode), flags, props)
+		b.firstInput = q
 	case nodeFunction:
-		q, err = b.processFunctionNode(root.(*functionNode))
+		q, err = b.processFunction(root.(*functionNode), props)
 	case nodeOperator:
-		q, err = b.processOperatorNode(root.(*operatorNode))
+		q, err = b.processOperator(root.(*operatorNode), props)
 	case nodeGroup:
-		q, err = b.processNode(root.(*groupNode).Input)
+		q, err = b.processNode(root.(*groupNode).Input, flagsEnum.None, props)
 		if err != nil {
 			return
 		}
 		q = &groupQuery{Input: q}
+		if b.firstInput == nil {
+			b.firstInput = q
+		}
 	}
+	b.parseDepth--
 	return
 }
 
 // build builds a specified XPath expressions expr.
-func build(expr string) (q query, err error) {
+func build(expr string, namespaces map[string]string) (q query, err error) {
 	defer func() {
 		if e := recover(); e != nil {
 			switch x := e.(type) {
@@ -539,7 +711,8 @@ func build(expr string) (q query, err error) {
 			}
 		}
 	}()
-	root := parse(expr)
+	root := parse(expr, namespaces)
 	b := &builder{}
-	return b.processNode(root)
+	props := builderProps.None
+	return b.processNode(root, flagsEnum.None, &props)
 }

vendor/github.com/antchfx/xpath/func.go

@@ -37,75 +37,83 @@ func predicate(q query) func(NodeNavigator) bool {
 }
 
 // positionFunc is a XPath Node Set functions position().
-func positionFunc(q query, t iterator) interface{} {
+func positionFunc() func(query, iterator) interface{} {
-	var (
+	return func(q query, t iterator) interface{} {
-		count = 1
+		var (
-		node  = t.Current().Copy()
+			count = 1
-	)
+			node  = t.Current().Copy()
-	test := predicate(q)
+		)
-	for node.MoveToPrevious() {
+		test := predicate(q)
-		if test(node) {
+		for node.MoveToPrevious() {
-			count++
-		}
-	}
-	return float64(count)
-}
-
-// lastFunc is a XPath Node Set functions last().
-func lastFunc(q query, t iterator) interface{} {
-	var (
-		count = 0
-		node  = t.Current().Copy()
-	)
-	node.MoveToFirst()
-	test := predicate(q)
-	for {
-		if test(node) {
-			count++
-		}
-		if !node.MoveToNext() {
-			break
-		}
-	}
-	return float64(count)
-}
-
-// countFunc is a XPath Node Set functions count(node-set).
-func countFunc(q query, t iterator) interface{} {
-	var count = 0
-	q = functionArgs(q)
-	test := predicate(q)
-	switch typ := q.Evaluate(t).(type) {
-	case query:
-		for node := typ.Select(t); node != nil; node = typ.Select(t) {
 			if test(node) {
 				count++
 			}
 		}
+		return float64(count)
+	}
+}
+
+// lastFunc is a XPath Node Set functions last().
+func lastFunc() func(query, iterator) interface{} {
+	return func(q query, t iterator) interface{} {
+		var (
+			count = 0
+			node  = t.Current().Copy()
+		)
+		test := predicate(q)
+		node.MoveToFirst()
+		for {
+			if test(node) {
+				count++
+			}
+			if !node.MoveToNext() {
+				break
+			}
+		}
+		return float64(count)
+	}
+}
+
+// countFunc is a XPath Node Set functions count(node-set).
+func countFunc(arg query) func(query, iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
+		var count = 0
+		q := functionArgs(arg)
+		test := predicate(q)
+		switch typ := q.Evaluate(t).(type) {
+		case query:
+			for node := typ.Select(t); node != nil; node = typ.Select(t) {
+				if test(node) {
+					count++
+				}
+			}
+		}
+		return float64(count)
 	}
-	return float64(count)
 }
 
 // sumFunc is a XPath Node Set functions sum(node-set).
-func sumFunc(q query, t iterator) interface{} {
+func sumFunc(arg query) func(query, iterator) interface{} {
-	var sum float64
+	return func(_ query, t iterator) interface{} {
-	switch typ := functionArgs(q).Evaluate(t).(type) {
+		var sum float64
-	case query:
+		switch typ := functionArgs(arg).Evaluate(t).(type) {
-		for node := typ.Select(t); node != nil; node = typ.Select(t) {
+		case query:
-			if v, err := strconv.ParseFloat(node.Value(), 64); err == nil {
+			for node := typ.Select(t); node != nil; node = typ.Select(t) {
-				sum += v
+				if v, err := strconv.ParseFloat(node.Value(), 64); err == nil {
+					sum += v
+				}
 			}
+		case float64:
+			sum = typ
+		case string:
+			v, err := strconv.ParseFloat(typ, 64)
+			if err != nil {
+				panic(errors.New("sum() function argument type must be a node-set or number"))
+			}
+			sum = v
 		}
-	case float64:
+		return sum
-		sum = typ
-	case string:
-		v, err := strconv.ParseFloat(typ, 64)
-		if err != nil {
-			panic(errors.New("sum() function argument type must be a node-set or number"))
-		}
-		sum = v
 	}
-	return sum
 }
 
 func asNumber(t iterator, o interface{}) float64 {
@@ -113,7 +121,7 @@ func asNumber(t iterator, o interface{}) float64 {
 	case query:
 		node := typ.Select(t)
 		if node == nil {
-			return float64(0)
+			return math.NaN()
 		}
 		if v, err := strconv.ParseFloat(node.Value(), 64); err == nil {
 			return v
@@ -122,36 +130,44 @@ func asNumber(t iterator, o interface{}) float64 {
 		return typ
 	case string:
 		v, err := strconv.ParseFloat(typ, 64)
-		if err != nil {
+		if err == nil {
-			panic(errors.New("ceiling() function argument type must be a node-set or number"))
+			return v
 		}
-		return v
 	}
-	return 0
+	return math.NaN()
 }
 
 // ceilingFunc is a XPath Node Set functions ceiling(node-set).
-func ceilingFunc(q query, t iterator) interface{} {
+func ceilingFunc(arg query) func(query, iterator) interface{} {
-	val := asNumber(t, functionArgs(q).Evaluate(t))
+	return func(_ query, t iterator) interface{} {
-	return math.Ceil(val)
+		val := asNumber(t, functionArgs(arg).Evaluate(t))
+		// if math.IsNaN(val) {
+		// 	panic(errors.New("ceiling() function argument type must be a valid number"))
+		// }
+		return math.Ceil(val)
+	}
 }
 
 // floorFunc is a XPath Node Set functions floor(node-set).
-func floorFunc(q query, t iterator) interface{} {
+func floorFunc(arg query) func(query, iterator) interface{} {
-	val := asNumber(t, functionArgs(q).Evaluate(t))
+	return func(_ query, t iterator) interface{} {
-	return math.Floor(val)
+		val := asNumber(t, functionArgs(arg).Evaluate(t))
+		return math.Floor(val)
+	}
 }
 
 // roundFunc is a XPath Node Set functions round(node-set).
-func roundFunc(q query, t iterator) interface{} {
+func roundFunc(arg query) func(query, iterator) interface{} {
-	val := asNumber(t, functionArgs(q).Evaluate(t))
+	return func(_ query, t iterator) interface{} {
-	//return math.Round(val)
+		val := asNumber(t, functionArgs(arg).Evaluate(t))
-	return round(val)
+		//return math.Round(val)
+		return round(val)
+	}
 }
 
 // nameFunc is a XPath functions name([node-set]).
 func nameFunc(arg query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		var v NodeNavigator
 		if arg == nil {
 			v = t.Current()
@@ -171,7 +187,7 @@ func nameFunc(arg query) func(query, iterator) interface{} {
 
 // localNameFunc is a XPath functions local-name([node-set]).
 func localNameFunc(arg query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		var v NodeNavigator
 		if arg == nil {
 			v = t.Current()
@@ -187,7 +203,7 @@ func localNameFunc(arg query) func(query, iterator) interface{} {
 
 // namespaceFunc is a XPath functions namespace-uri([node-set]).
 func namespaceFunc(arg query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		var v NodeNavigator
 		if arg == nil {
 			v = t.Current()
@@ -254,26 +270,32 @@ func asString(t iterator, v interface{}) string {
 }
 
 // booleanFunc is a XPath functions boolean([node-set]).
-func booleanFunc(q query, t iterator) interface{} {
+func booleanFunc(arg1 query) func(query, iterator) interface{} {
-	v := functionArgs(q).Evaluate(t)
+	return func(_ query, t iterator) interface{} {
-	return asBool(t, v)
+		v := functionArgs(arg1).Evaluate(t)
+		return asBool(t, v)
+	}
 }
 
 // numberFunc is a XPath functions number([node-set]).
-func numberFunc(q query, t iterator) interface{} {
+func numberFunc(arg1 query) func(query, iterator) interface{} {
-	v := functionArgs(q).Evaluate(t)
+	return func(_ query, t iterator) interface{} {
-	return asNumber(t, v)
+		v := functionArgs(arg1).Evaluate(t)
+		return asNumber(t, v)
+	}
 }
 
 // stringFunc is a XPath functions string([node-set]).
-func stringFunc(q query, t iterator) interface{} {
+func stringFunc(arg1 query) func(query, iterator) interface{} {
-	v := functionArgs(q).Evaluate(t)
+	return func(_ query, t iterator) interface{} {
-	return asString(t, v)
+		v := functionArgs(arg1).Evaluate(t)
+		return asString(t, v)
+	}
 }
 
 // startwithFunc is a XPath functions starts-with(string, string).
 func startwithFunc(arg1, arg2 query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		var (
 			m, n string
 			ok   bool
@@ -300,7 +322,7 @@ func startwithFunc(arg1, arg2 query) func(query, iterator) interface{} {
 
 // endwithFunc is a XPath functions ends-with(string, string).
 func endwithFunc(arg1, arg2 query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		var (
 			m, n string
 			ok   bool
@@ -327,7 +349,7 @@ func endwithFunc(arg1, arg2 query) func(query, iterator) interface{} {
 
 // containsFunc is a XPath functions contains(string or @attr, string).
 func containsFunc(arg1, arg2 query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		var (
 			m, n string
 			ok   bool
@@ -358,7 +380,7 @@ func containsFunc(arg1, arg2 query) func(query, iterator) interface{} {
 // Note: does not support https://www.w3.org/TR/xpath-functions-31/#func-matches 3rd optional `flags` argument; if
 // needed, directly put flags in the regexp pattern, such as `(?i)^pattern$` for `i` flag.
 func matchesFunc(arg1, arg2 query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		var s string
 		switch typ := functionArgs(arg1).Evaluate(t).(type) {
 		case string:
@@ -384,43 +406,45 @@ func matchesFunc(arg1, arg2 query) func(query, iterator) interface{} {
 }
 
 // normalizespaceFunc is XPath functions normalize-space(string?)
-func normalizespaceFunc(q query, t iterator) interface{} {
+func normalizespaceFunc(arg1 query) func(query, iterator) interface{} {
-	var m string
+	return func(_ query, t iterator) interface{} {
-	switch typ := functionArgs(q).Evaluate(t).(type) {
+		var m string
-	case string:
+		switch typ := functionArgs(arg1).Evaluate(t).(type) {
-		m = typ
+		case string:
-	case query:
+			m = typ
-		node := typ.Select(t)
+		case query:
-		if node == nil {
+			node := typ.Select(t)
-			return ""
+			if node == nil {
-		}
+				return ""
-		m = node.Value()
-	}
-	var b = builderPool.Get().(stringBuilder)
-	b.Grow(len(m))
-
-	runeStr := []rune(strings.TrimSpace(m))
-	l := len(runeStr)
-	for i := range runeStr {
-		r := runeStr[i]
-		isSpace := unicode.IsSpace(r)
-		if !(isSpace && (i+1 < l && unicode.IsSpace(runeStr[i+1]))) {
-			if isSpace {
-				r = ' '
 			}
-			b.WriteRune(r)
+			m = node.Value()
 		}
-	}
+		var b = builderPool.Get().(stringBuilder)
-	result := b.String()
+		b.Grow(len(m))
-	b.Reset()
-	builderPool.Put(b)
 
-	return result
+		runeStr := []rune(strings.TrimSpace(m))
+		l := len(runeStr)
+		for i := range runeStr {
+			r := runeStr[i]
+			isSpace := unicode.IsSpace(r)
+			if !(isSpace && (i+1 < l && unicode.IsSpace(runeStr[i+1]))) {
+				if isSpace {
+					r = ' '
+				}
+				b.WriteRune(r)
+			}
+		}
+		result := b.String()
+		b.Reset()
+		builderPool.Put(b)
+
+		return result
+	}
 }
 
 // substringFunc is XPath functions substring function returns a part of a given string.
 func substringFunc(arg1, arg2, arg3 query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		var m string
 		switch typ := functionArgs(arg1).Evaluate(t).(type) {
 		case string:
@@ -459,7 +483,7 @@ func substringFunc(arg1, arg2, arg3 query) func(query, iterator) interface{} {
 
 // substringIndFunc is XPath functions substring-before/substring-after function returns a part of a given string.
 func substringIndFunc(arg1, arg2 query, after bool) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		var str string
 		switch v := functionArgs(arg1).Evaluate(t).(type) {
 		case string:
@@ -500,7 +524,7 @@ func substringIndFunc(arg1, arg2 query, after bool) func(query, iterator) interf
 // stringLengthFunc is XPATH string-length( [string] ) function that returns a number
 // equal to the number of characters in a given string.
 func stringLengthFunc(arg1 query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		switch v := functionArgs(arg1).Evaluate(t).(type) {
 		case string:
 			return float64(len(v))
@@ -517,7 +541,7 @@ func stringLengthFunc(arg1 query) func(query, iterator) interface{} {
 
 // translateFunc is XPath functions translate() function returns a replaced string.
 func translateFunc(arg1, arg2, arg3 query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		str := asString(t, functionArgs(arg1).Evaluate(t))
 		src := asString(t, functionArgs(arg2).Evaluate(t))
 		dst := asString(t, functionArgs(arg3).Evaluate(t))
@@ -536,7 +560,7 @@ func translateFunc(arg1, arg2, arg3 query) func(query, iterator) interface{} {
 
 // replaceFunc is XPath functions replace() function returns a replaced string.
 func replaceFunc(arg1, arg2, arg3 query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		str := asString(t, functionArgs(arg1).Evaluate(t))
 		src := asString(t, functionArgs(arg2).Evaluate(t))
 		dst := asString(t, functionArgs(arg3).Evaluate(t))
@@ -546,15 +570,17 @@ func replaceFunc(arg1, arg2, arg3 query) func(query, iterator) interface{} {
 }
 
 // notFunc is XPATH functions not(expression) function operation.
-func notFunc(q query, t iterator) interface{} {
+func notFunc(arg1 query) func(query, iterator) interface{} {
-	switch v := functionArgs(q).Evaluate(t).(type) {
+	return func(_ query, t iterator) interface{} {
-	case bool:
+		switch v := functionArgs(arg1).Evaluate(t).(type) {
-		return !v
+		case bool:
-	case query:
+			return !v
-		node := v.Select(t)
+		case query:
-		return node == nil
+			node := v.Select(t)
-	default:
+			return node == nil
-		return false
+		default:
+			return false
+		}
 	}
 }
 
@@ -562,7 +588,7 @@ func notFunc(q query, t iterator) interface{} {
 // strings and returns the resulting string.
 // concat( string1 , string2 [, stringn]* )
 func concatFunc(args ...query) func(query, iterator) interface{} {
-	return func(q query, t iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
 		b := builderPool.Get().(stringBuilder)
 		for _, v := range args {
 			v = functionArgs(v)
@@ -612,3 +638,42 @@ func reverseFunc(q query, t iterator) func() NodeNavigator {
 		return node
 	}
 }
+
+// string-join is a XPath Node Set functions string-join(node-set, separator).
+func stringJoinFunc(q, arg1 query) func(query, iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
+		var separator string
+		switch v := functionArgs(arg1).Evaluate(t).(type) {
+		case string:
+			separator = v
+		case query:
+			node := v.Select(t)
+			if node != nil {
+				separator = node.Value()
+			}
+		}
+
+		q = functionArgs(q)
+		test := predicate(q)
+		var parts []string
+		switch v := q.Evaluate(t).(type) {
+		case string:
+			return v
+		case query:
+			for node := v.Select(t); node != nil; node = v.Select(t) {
+				if test(node) {
+					parts = append(parts, node.Value())
+				}
+			}
+		}
+		return strings.Join(parts, separator)
+	}
+}
+
+// lower-case is XPATH function that converts a string to lower case.
+func lowerCaseFunc(arg1 query) func(query, iterator) interface{} {
+	return func(_ query, t iterator) interface{} {
+		v := functionArgs(arg1).Evaluate(t)
+		return strings.ToLower(asString(t, v))
+	}
+}

vendor/github.com/antchfx/xpath/func_go110.go

@@ -11,6 +11,6 @@ func round(f float64) int {
 	return int(math.Round(f))
 }
 
-func newStringBuilder() stringBuilder{ 
+func newStringBuilder() stringBuilder {
 	return &strings.Builder{}
 }

vendor/github.com/antchfx/xpath/operator.go

@@ -1,40 +1,11 @@
 package xpath
 
 import (
-	"fmt"
-	"reflect"
 	"strconv"
 )
 
 // The XPath number operator function list.
 
-// valueType is a return value type.
-type valueType int
-
-const (
-	booleanType valueType = iota
-	numberType
-	stringType
-	nodeSetType
-)
-
-func getValueType(i interface{}) valueType {
-	v := reflect.ValueOf(i)
-	switch v.Kind() {
-	case reflect.Float64:
-		return numberType
-	case reflect.String:
-		return stringType
-	case reflect.Bool:
-		return booleanType
-	default:
-		if _, ok := i.(query); ok {
-			return nodeSetType
-		}
-	}
-	panic(fmt.Errorf("xpath unknown value type: %v", v.Kind()))
-}
-
 type logical func(iterator, string, interface{}, interface{}) bool
 
 var logicalFuncs = [][]logical{
@@ -165,15 +136,28 @@ func cmpNodeSetString(t iterator, op string, m, n interface{}) bool {
 func cmpNodeSetNodeSet(t iterator, op string, m, n interface{}) bool {
 	a := m.(query)
 	b := n.(query)
-	x := a.Select(t)
+	for {
-	if x == nil {
+		x := a.Select(t)
-		return false
+		if x == nil {
+			return false
+		}
+
+		y := b.Select(t)
+		if y == nil {
+			return false
+		}
+
+		for {
+			if cmpStringStringF(op, x.Value(), y.Value()) {
+				return true
+			}
+			if y = b.Select(t); y == nil {
+				break
+			}
+		}
+		// reset
+		b.Evaluate(t)
 	}
-	y := b.Select(t)
-	if y == nil {
-		return false
-	}
-	return cmpStringStringF(op, x.Value(), y.Value())
 }
 
 func cmpStringNumeric(t iterator, op string, m, n interface{}) bool {
@@ -215,91 +199,90 @@ func cmpBooleanBoolean(t iterator, op string, m, n interface{}) bool {
 
 // eqFunc is an `=` operator.
 func eqFunc(t iterator, m, n interface{}) interface{} {
-	t1 := getValueType(m)
+	t1 := getXPathType(m)
-	t2 := getValueType(n)
+	t2 := getXPathType(n)
 	return logicalFuncs[t1][t2](t, "=", m, n)
 }
 
 // gtFunc is an `>` operator.
 func gtFunc(t iterator, m, n interface{}) interface{} {
-	t1 := getValueType(m)
+	t1 := getXPathType(m)
-	t2 := getValueType(n)
+	t2 := getXPathType(n)
 	return logicalFuncs[t1][t2](t, ">", m, n)
 }
 
 // geFunc is an `>=` operator.
 func geFunc(t iterator, m, n interface{}) interface{} {
-	t1 := getValueType(m)
+	t1 := getXPathType(m)
-	t2 := getValueType(n)
+	t2 := getXPathType(n)
 	return logicalFuncs[t1][t2](t, ">=", m, n)
 }
 
 // ltFunc is an `<` operator.
 func ltFunc(t iterator, m, n interface{}) interface{} {
-	t1 := getValueType(m)
+	t1 := getXPathType(m)
-	t2 := getValueType(n)
+	t2 := getXPathType(n)
 	return logicalFuncs[t1][t2](t, "<", m, n)
 }
 
 // leFunc is an `<=` operator.
 func leFunc(t iterator, m, n interface{}) interface{} {
-	t1 := getValueType(m)
+	t1 := getXPathType(m)
-	t2 := getValueType(n)
+	t2 := getXPathType(n)
 	return logicalFuncs[t1][t2](t, "<=", m, n)
 }
 
 // neFunc is an `!=` operator.
 func neFunc(t iterator, m, n interface{}) interface{} {
-	t1 := getValueType(m)
+	t1 := getXPathType(m)
-	t2 := getValueType(n)
+	t2 := getXPathType(n)
 	return logicalFuncs[t1][t2](t, "!=", m, n)
 }
 
 // orFunc is an `or` operator.
 var orFunc = func(t iterator, m, n interface{}) interface{} {
-	t1 := getValueType(m)
+	t1 := getXPathType(m)
-	t2 := getValueType(n)
+	t2 := getXPathType(n)
 	return logicalFuncs[t1][t2](t, "or", m, n)
 }
 
-func numericExpr(m, n interface{}, cb func(float64, float64) float64) float64 {
+func numericExpr(t iterator, m, n interface{}, cb func(float64, float64) float64) float64 {
-	typ := reflect.TypeOf(float64(0))
+	a := asNumber(t, m)
-	a := reflect.ValueOf(m).Convert(typ)
+	b := asNumber(t, n)
-	b := reflect.ValueOf(n).Convert(typ)
+	return cb(a, b)
-	return cb(a.Float(), b.Float())
 }
 
 // plusFunc is an `+` operator.
-var plusFunc = func(m, n interface{}) interface{} {
+var plusFunc = func(t iterator, m, n interface{}) interface{} {
-	return numericExpr(m, n, func(a, b float64) float64 {
+	return numericExpr(t, m, n, func(a, b float64) float64 {
 		return a + b
 	})
 }
 
 // minusFunc is an `-` operator.
-var minusFunc = func(m, n interface{}) interface{} {
+var minusFunc = func(t iterator, m, n interface{}) interface{} {
-	return numericExpr(m, n, func(a, b float64) float64 {
+	return numericExpr(t, m, n, func(a, b float64) float64 {
 		return a - b
 	})
 }
 
 // mulFunc is an `*` operator.
-var mulFunc = func(m, n interface{}) interface{} {
+var mulFunc = func(t iterator, m, n interface{}) interface{} {
-	return numericExpr(m, n, func(a, b float64) float64 {
+	return numericExpr(t, m, n, func(a, b float64) float64 {
 		return a * b
 	})
 }
 
 // divFunc is an `DIV` operator.
-var divFunc = func(m, n interface{}) interface{} {
+var divFunc = func(t iterator, m, n interface{}) interface{} {
-	return numericExpr(m, n, func(a, b float64) float64 {
+	return numericExpr(t, m, n, func(a, b float64) float64 {
 		return a / b
 	})
 }
 
 // modFunc is an 'MOD' operator.
-var modFunc = func(m, n interface{}) interface{} {
+var modFunc = func(t iterator, m, n interface{}) interface{} {
-	return numericExpr(m, n, func(a, b float64) float64 {
+	return numericExpr(t, m, n, func(a, b float64) float64 {
 		return float64(int(a) % int(b))
 	})
 }

vendor/github.com/antchfx/xpath/parse.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"strconv"
 	"unicode"
+	"unicode/utf8"
 )
 
 // A XPath expression token type.
@@ -69,8 +70,9 @@ const (
 )
 
 type parser struct {
-	r *scanner
+	r          *scanner
-	d int
+	d          int
+	namespaces map[string]string
 }
 
 // newOperatorNode returns new operator node OperatorNode.
@@ -84,15 +86,20 @@ func newOperandNode(v interface{}) node {
 }
 
 // newAxisNode returns new axis node AxisNode.
-func newAxisNode(axeTyp, localName, prefix, prop string, n node) node {
+func newAxisNode(axisType string, typeTest NodeType, localName, prefix, prop string, n node, opts ...func(p *axisNode)) node {
-	return &axisNode{
+	a := axisNode{
 		nodeType:  nodeAxis,
+		typeTest:  typeTest,
 		LocalName: localName,
 		Prefix:    prefix,
-		AxeType:   axeTyp,
+		AxisType:  axisType,
 		Prop:      prop,
 		Input:     n,
 	}
+	for _, o := range opts {
+		o(&a)
+	}
+	return &a
 }
 
 // newVariableNode returns new variable node VariableNode.
@@ -223,8 +230,9 @@ Loop:
 }
 
 // RelationalExpr ::= AdditiveExpr	| RelationalExpr '<' AdditiveExpr | RelationalExpr '>' AdditiveExpr
-//					| RelationalExpr '<=' AdditiveExpr
+//
-//					| RelationalExpr '>=' AdditiveExpr
+//	| RelationalExpr '<=' AdditiveExpr
+//	| RelationalExpr '>=' AdditiveExpr
 func (p *parser) parseRelationalExpr(n node) node {
 	opnd := p.parseAdditiveExpr(n)
 Loop:
@@ -269,7 +277,8 @@ Loop:
 }
 
 // MultiplicativeExpr ::= UnaryExpr	| MultiplicativeExpr MultiplyOperator(*) UnaryExpr
-//						| MultiplicativeExpr 'div' UnaryExpr | MultiplicativeExpr 'mod' UnaryExpr
+//
+//	| MultiplicativeExpr 'div' UnaryExpr | MultiplicativeExpr 'mod' UnaryExpr
 func (p *parser) parseMultiplicativeExpr(n node) node {
 	opnd := p.parseUnaryExpr(n)
 Loop:
@@ -303,7 +312,7 @@ func (p *parser) parseUnaryExpr(n node) node {
 	return opnd
 }
 
-// 	UnionExpr ::= PathExpr | UnionExpr '|' PathExpr
+// UnionExpr ::= PathExpr | UnionExpr '|' PathExpr
 func (p *parser) parseUnionExpr(n node) node {
 	opnd := p.parsePathExpr(n)
 Loop:
@@ -330,7 +339,7 @@ func (p *parser) parsePathExpr(n node) node {
 			opnd = p.parseRelativeLocationPath(opnd)
 		case itemSlashSlash:
 			p.next()
-			opnd = p.parseRelativeLocationPath(newAxisNode("descendant-or-self", "", "", "", opnd))
+			opnd = p.parseRelativeLocationPath(newAxisNode("descendant-or-self", allNode, "", "", "", opnd))
 		}
 	} else {
 		opnd = p.parseLocationPath(nil)
@@ -347,7 +356,7 @@ func (p *parser) parseFilterExpr(n node) node {
 	return opnd
 }
 
-// 	Predicate ::=  '[' PredicateExpr ']'
+// Predicate ::=  '[' PredicateExpr ']'
 func (p *parser) parsePredicate(n node) node {
 	p.skipItem(itemLBracket)
 	opnd := p.parseExpression(n)
@@ -367,7 +376,7 @@ func (p *parser) parseLocationPath(n node) (opnd node) {
 	case itemSlashSlash:
 		p.next()
 		opnd = newRootNode("//")
-		opnd = p.parseRelativeLocationPath(newAxisNode("descendant-or-self", "", "", "", opnd))
+		opnd = p.parseRelativeLocationPath(newAxisNode("descendant-or-self", allNode, "", "", "", opnd))
 	default:
 		opnd = p.parseRelativeLocationPath(n)
 	}
@@ -383,7 +392,7 @@ Loop:
 		switch p.r.typ {
 		case itemSlashSlash:
 			p.next()
-			opnd = newAxisNode("descendant-or-self", "", "", "", opnd)
+			opnd = newAxisNode("descendant-or-self", allNode, "", "", "", opnd)
 		case itemSlash:
 			p.next()
 		default:
@@ -395,30 +404,33 @@ Loop:
 
 // Step	::= AxisSpecifier NodeTest Predicate* | AbbreviatedStep
 func (p *parser) parseStep(n node) (opnd node) {
-	axeTyp := "child" // default axes value.
 	if p.r.typ == itemDot || p.r.typ == itemDotDot {
 		if p.r.typ == itemDot {
-			axeTyp = "self"
+			opnd = newAxisNode("self", allNode, "", "", "", n)
 		} else {
-			axeTyp = "parent"
+			opnd = newAxisNode("parent", allNode, "", "", "", n)
 		}
 		p.next()
-		opnd = newAxisNode(axeTyp, "", "", "", n)
 		if p.r.typ != itemLBracket {
 			return opnd
 		}
 	} else {
+		axisType := "child" // default axes value.
 		switch p.r.typ {
 		case itemAt:
+			axisType = "attribute"
 			p.next()
-			axeTyp = "attribute"
 		case itemAxe:
-			axeTyp = p.r.name
+			axisType = p.r.name
 			p.next()
 		case itemLParens:
 			return p.parseSequence(n)
 		}
-		opnd = p.parseNodeTest(n, axeTyp)
+		matchType := ElementNode
+		if axisType == "attribute" {
+			matchType = AttributeNode
+		}
+		opnd = p.parseNodeTest(n, axisType, matchType)
 	}
 	for p.r.typ == itemLBracket {
 		opnd = newFilterNode(opnd, p.parsePredicate(opnd))
@@ -442,8 +454,8 @@ func (p *parser) parseSequence(n node) (opnd node) {
 	return opnd
 }
 
-// 	NodeTest ::= NameTest | nodeType '(' ')' | 'processing-instruction' '(' Literal ')'
+// NodeTest ::= NameTest | nodeType '(' ')' | 'processing-instruction' '(' Literal ')'
-func (p *parser) parseNodeTest(n node, axeTyp string) (opnd node) {
+func (p *parser) parseNodeTest(n node, axeTyp string, matchType NodeType) (opnd node) {
 	switch p.r.typ {
 	case itemName:
 		if p.r.canBeFunc && isNodeType(p.r) {
@@ -461,7 +473,19 @@ func (p *parser) parseNodeTest(n node, axeTyp string) (opnd node) {
 				p.next()
 			}
 			p.skipItem(itemRParens)
-			opnd = newAxisNode(axeTyp, name, "", prop, n)
+			switch prop {
+			case "comment":
+				matchType = CommentNode
+			case "text":
+				matchType = TextNode
+			case "processing-instruction":
+			case "node":
+				matchType = allNode
+			default:
+				matchType = RootNode
+			}
+
+			opnd = newAxisNode(axeTyp, matchType, name, "", prop, n)
 		} else {
 			prefix := p.r.prefix
 			name := p.r.name
@@ -469,10 +493,19 @@ func (p *parser) parseNodeTest(n node, axeTyp string) (opnd node) {
 			if p.r.name == "*" {
 				name = ""
 			}
-			opnd = newAxisNode(axeTyp, name, prefix, "", n)
+			opnd = newAxisNode(axeTyp, matchType, name, prefix, "", n, func(a *axisNode) {
+				if prefix != "" && p.namespaces != nil {
+					if ns, ok := p.namespaces[prefix]; ok {
+						a.hasNamespaceURI = true
+						a.namespaceURI = ns
+					} else {
+						panic(fmt.Sprintf("prefix %s not defined.", prefix))
+					}
+				}
+			})
 		}
 	case itemStar:
-		opnd = newAxisNode(axeTyp, "", "", "", n)
+		opnd = newAxisNode(axeTyp, matchType, "", "", "", n)
 		p.next()
 	default:
 		panic("expression must evaluate to a node-set")
@@ -531,11 +564,11 @@ func (p *parser) parseMethod(n node) node {
 }
 
 // Parse parsing the XPath express string expr and returns a tree node.
-func parse(expr string) node {
+func parse(expr string, namespaces map[string]string) node {
 	r := &scanner{text: expr}
 	r.nextChar()
 	r.nextItem()
-	p := &parser{r: r}
+	p := &parser{r: r, namespaces: namespaces}
 	return p.parseExpression(nil)
 }
 
@@ -563,17 +596,20 @@ func (o *operatorNode) String() string {
 // axisNode holds a location step.
 type axisNode struct {
 	nodeType
-	Input     node
+	Input           node
-	Prop      string // node-test name.[comment|text|processing-instruction|node]
+	Prop            string // node-test name.[comment|text|processing-instruction|node]
-	AxeType   string // name of the axes.[attribute|ancestor|child|....]
+	AxisType        string // name of the axis.[attribute|ancestor|child|....]
-	LocalName string // local part name of node.
+	LocalName       string // local part name of node.
-	Prefix    string // prefix name of node.
+	Prefix          string // prefix name of node.
+	namespaceURI    string // namespace URI of node
+	hasNamespaceURI bool   // if namespace URI is set (can be "")
+	typeTest        NodeType
 }
 
 func (a *axisNode) String() string {
 	var b bytes.Buffer
-	if a.AxeType != "" {
+	if a.AxisType != "" {
-		b.Write([]byte(a.AxeType + "::"))
+		b.Write([]byte(a.AxisType + "::"))
 	}
 	if a.Prefix != "" {
 		b.Write([]byte(a.Prefix + ":"))
@@ -656,6 +692,7 @@ type scanner struct {
 
 	pos       int
 	curr      rune
+	currSize  int
 	typ       itemType
 	strval    string  // text value at current pos
 	numval    float64 // number value at current pos
@@ -665,10 +702,18 @@ type scanner struct {
 func (s *scanner) nextChar() bool {
 	if s.pos >= len(s.text) {
 		s.curr = rune(0)
+		s.currSize = 1
 		return false
 	}
-	s.curr = rune(s.text[s.pos])
+
-	s.pos++
+	r, size := rune(s.text[s.pos]), 1
+	if r >= 0x80 { // handle multi-byte runes
+		r, size = utf8.DecodeRuneInString(s.text[s.pos:])
+	}
+
+	s.curr = r
+	s.currSize = size
+	s.pos += size
 	return true
 }
 
@@ -827,12 +872,15 @@ func (s *scanner) scanString() string {
 		end = s.curr
 	)
 	s.nextChar()
-	i := s.pos - 1
+	i := s.pos - s.currSize
+	if s.currSize > 1 {
+		c++
+	}
 	for s.curr != end {
 		if !s.nextChar() {
 			panic(errors.New("xpath: scanString got unclosed string"))
 		}
-		c++
+		c += s.currSize
 	}
 	s.nextChar()
 	return s.text[i : i+c]
@@ -840,14 +888,18 @@ func (s *scanner) scanString() string {
 
 func (s *scanner) scanName() string {
 	var (
-		c int
+		c = s.currSize - 1
-		i = s.pos - 1
+		i = s.pos - s.currSize
 	)
+
+	// Detect current rune size
+
 	for isName(s.curr) {
-		c++
 		if !s.nextChar() {
+			c += s.currSize
 			break
 		}
+		c += s.currSize
 	}
 	return s.text[i : i+c]
 }

vendor/github.com/antchfx/xpath/query.go

@@ -7,6 +7,44 @@ import (
 	"reflect"
 )
 
+// The return type of the XPath expression.
+type resultType int
+
+var xpathResultType = struct {
+	Boolean resultType
+	// A numeric value
+	Number resultType
+	String resultType
+	// A node collection.
+	NodeSet resultType
+	// Any of the XPath node types.
+	Any resultType
+}{
+	Boolean: 0,
+	Number:  1,
+	String:  2,
+	NodeSet: 3,
+	Any:     4,
+}
+
+type queryProp int
+
+var queryProps = struct {
+	None     queryProp
+	Position queryProp
+	Count    queryProp
+	Cached   queryProp
+	Reverse  queryProp
+	Merge    queryProp
+}{
+	None:     0,
+	Position: 1,
+	Count:    2,
+	Cached:   4,
+	Reverse:  8,
+	Merge:    16,
+}
+
 type iterator interface {
 	Current() NodeNavigator
 }
@@ -20,12 +58,15 @@ type query interface {
 	Evaluate(iterator) interface{}
 
 	Clone() query
+
+	// ValueType returns the value type of the current query.
+	ValueType() resultType
+
+	Properties() queryProp
 }
 
 // nopQuery is an empty query that always return nil for any query.
-type nopQuery struct {
+type nopQuery struct{}
-	query
-}
 
 func (nopQuery) Select(iterator) NodeNavigator { return nil }
 
@@ -33,21 +74,23 @@ func (nopQuery) Evaluate(iterator) interface{} { return nil }
 
 func (nopQuery) Clone() query { return nopQuery{} }
 
+func (nopQuery) ValueType() resultType { return xpathResultType.NodeSet }
+
+func (nopQuery) Properties() queryProp {
+	return queryProps.Merge | queryProps.Position | queryProps.Count | queryProps.Cached
+}
+
 // contextQuery is returns current node on the iterator object query.
 type contextQuery struct {
 	count int
-	Root  bool // Moving to root-level node in the current context iterator.
 }
 
-func (c *contextQuery) Select(t iterator) (n NodeNavigator) {
+func (c *contextQuery) Select(t iterator) NodeNavigator {
-	if c.count == 0 {
+	if c.count > 0 {
-		c.count++
+		return nil
-		n = t.Current().Copy()
-		if c.Root {
-			n.MoveToRoot()
-		}
 	}
-	return n
+	c.count++
+	return t.Current().Copy()
 }
 
 func (c *contextQuery) Evaluate(iterator) interface{} {
@@ -56,12 +99,53 @@ func (c *contextQuery) Evaluate(iterator) interface{} {
 }
 
 func (c *contextQuery) Clone() query {
-	return &contextQuery{count: 0, Root: c.Root}
+	return &contextQuery{}
+}
+
+func (c *contextQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (c *contextQuery) Properties() queryProp {
+	return queryProps.Merge | queryProps.Position | queryProps.Count | queryProps.Cached
+}
+
+type absoluteQuery struct {
+	count int
+}
+
+func (a *absoluteQuery) Select(t iterator) (n NodeNavigator) {
+	if a.count > 0 {
+		return
+	}
+	a.count++
+	n = t.Current().Copy()
+	n.MoveToRoot()
+	return
+}
+
+func (a *absoluteQuery) Evaluate(t iterator) interface{} {
+	a.count = 0
+	return a
+}
+
+func (a *absoluteQuery) Clone() query {
+	return &absoluteQuery{}
+}
+
+func (a *absoluteQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (a *absoluteQuery) Properties() queryProp {
+	return queryProps.Merge | queryProps.Position | queryProps.Count | queryProps.Cached
 }
 
 // ancestorQuery is an XPath ancestor node query.(ancestor::*|ancestor-self::*)
 type ancestorQuery struct {
+	name     string
 	iterator func() NodeNavigator
+	table    map[uint64]bool
 
 	Self      bool
 	Input     query
@@ -69,6 +153,10 @@ type ancestorQuery struct {
 }
 
 func (a *ancestorQuery) Select(t iterator) NodeNavigator {
+	if a.table == nil {
+		a.table = make(map[uint64]bool)
+	}
+
 	for {
 		if a.iterator == nil {
 			node := a.Input.Select(t)
@@ -78,24 +166,27 @@ func (a *ancestorQuery) Select(t iterator) NodeNavigator {
 			first := true
 			node = node.Copy()
 			a.iterator = func() NodeNavigator {
-				if first && a.Self {
+				if first {
 					first = false
-					if a.Predicate(node) {
+					if a.Self && a.Predicate(node) {
 						return node
 					}
 				}
 				for node.MoveToParent() {
-					if !a.Predicate(node) {
+					if a.Predicate(node) {
-						continue
+						return node
 					}
-					return node
 				}
 				return nil
 			}
 		}
 
-		if node := a.iterator(); node != nil {
+		for node := a.iterator(); node != nil; node = a.iterator() {
-			return node
+			node_id := getHashCode(node.Copy())
+			if _, ok := a.table[node_id]; !ok {
+				a.table[node_id] = true
+				return node
+			}
 		}
 		a.iterator = nil
 	}
@@ -112,11 +203,20 @@ func (a *ancestorQuery) Test(n NodeNavigator) bool {
 }
 
 func (a *ancestorQuery) Clone() query {
-	return &ancestorQuery{Self: a.Self, Input: a.Input.Clone(), Predicate: a.Predicate}
+	return &ancestorQuery{name: a.name, Self: a.Self, Input: a.Input.Clone(), Predicate: a.Predicate}
+}
+
+func (a *ancestorQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (a *ancestorQuery) Properties() queryProp {
+	return queryProps.Position | queryProps.Count | queryProps.Cached | queryProps.Merge | queryProps.Reverse
 }
 
 // attributeQuery is an XPath attribute node query.(@*)
 type attributeQuery struct {
+	name     string
 	iterator func() NodeNavigator
 
 	Input     query
@@ -162,11 +262,20 @@ func (a *attributeQuery) Test(n NodeNavigator) bool {
 }
 
 func (a *attributeQuery) Clone() query {
-	return &attributeQuery{Input: a.Input.Clone(), Predicate: a.Predicate}
+	return &attributeQuery{name: a.name, Input: a.Input.Clone(), Predicate: a.Predicate}
+}
+
+func (a *attributeQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (a *attributeQuery) Properties() queryProp {
+	return queryProps.Merge
 }
 
 // childQuery is an XPath child node query.(child::*)
 type childQuery struct {
+	name     string
 	posit    int
 	iterator func() NodeNavigator
 
@@ -216,7 +325,15 @@ func (c *childQuery) Test(n NodeNavigator) bool {
 }
 
 func (c *childQuery) Clone() query {
-	return &childQuery{Input: c.Input.Clone(), Predicate: c.Predicate}
+	return &childQuery{name: c.name, Input: c.Input.Clone(), Predicate: c.Predicate}
+}
+
+func (c *childQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (c *childQuery) Properties() queryProp {
+	return queryProps.Merge
 }
 
 // position returns a position of current NodeNavigator.
@@ -224,8 +341,75 @@ func (c *childQuery) position() int {
 	return c.posit
 }
 
+type cachedChildQuery struct {
+	name     string
+	posit    int
+	iterator func() NodeNavigator
+
+	Input     query
+	Predicate func(NodeNavigator) bool
+}
+
+func (c *cachedChildQuery) Select(t iterator) NodeNavigator {
+	for {
+		if c.iterator == nil {
+			c.posit = 0
+			node := c.Input.Select(t)
+			if node == nil {
+				return nil
+			}
+			node = node.Copy()
+			first := true
+			c.iterator = func() NodeNavigator {
+				for {
+					if (first && !node.MoveToChild()) || (!first && !node.MoveToNext()) {
+						return nil
+					}
+					first = false
+					if c.Predicate(node) {
+						return node
+					}
+				}
+			}
+		}
+
+		if node := c.iterator(); node != nil {
+			c.posit++
+			return node
+		}
+		c.iterator = nil
+	}
+}
+
+func (c *cachedChildQuery) Evaluate(t iterator) interface{} {
+	c.Input.Evaluate(t)
+	c.iterator = nil
+	return c
+}
+
+func (c *cachedChildQuery) position() int {
+	return c.posit
+}
+
+func (c *cachedChildQuery) Test(n NodeNavigator) bool {
+	return c.Predicate(n)
+}
+
+func (c *cachedChildQuery) Clone() query {
+	return &childQuery{name: c.name, Input: c.Input.Clone(), Predicate: c.Predicate}
+}
+
+func (c *cachedChildQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (c *cachedChildQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
 // descendantQuery is an XPath descendant node query.(descendant::* | descendant-or-self::*)
 type descendantQuery struct {
+	name     string
 	iterator func() NodeNavigator
 	posit    int
 	level    int
@@ -245,14 +429,11 @@ func (d *descendantQuery) Select(t iterator) NodeNavigator {
 			}
 			node = node.Copy()
 			d.level = 0
-			positmap := make(map[int]int)
 			first := true
 			d.iterator = func() NodeNavigator {
-				if first && d.Self {
+				if first {
 					first = false
-					if d.Predicate(node) {
+					if d.Self && d.Predicate(node) {
-						d.posit = 1
-						positmap[d.level] = 1
 						return node
 					}
 				}
@@ -260,7 +441,6 @@ func (d *descendantQuery) Select(t iterator) NodeNavigator {
 				for {
 					if node.MoveToChild() {
 						d.level = d.level + 1
-						positmap[d.level] = 0
 					} else {
 						for {
 							if d.level == 0 {
@@ -274,8 +454,6 @@ func (d *descendantQuery) Select(t iterator) NodeNavigator {
 						}
 					}
 					if d.Predicate(node) {
-						positmap[d.level]++
-						d.posit = positmap[d.level]
 						return node
 					}
 				}
@@ -283,6 +461,7 @@ func (d *descendantQuery) Select(t iterator) NodeNavigator {
 		}
 
 		if node := d.iterator(); node != nil {
+			d.posit++
 			return node
 		}
 		d.iterator = nil
@@ -309,7 +488,15 @@ func (d *descendantQuery) depth() int {
 }
 
 func (d *descendantQuery) Clone() query {
-	return &descendantQuery{Self: d.Self, Input: d.Input.Clone(), Predicate: d.Predicate}
+	return &descendantQuery{name: d.name, Self: d.Self, Input: d.Input.Clone(), Predicate: d.Predicate}
+}
+
+func (d *descendantQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (d *descendantQuery) Properties() queryProp {
+	return queryProps.Merge
 }
 
 // followingQuery is an XPath following node query.(following::*|following-sibling::*)
@@ -390,6 +577,14 @@ func (f *followingQuery) Clone() query {
 	return &followingQuery{Input: f.Input.Clone(), Sibling: f.Sibling, Predicate: f.Predicate}
 }
 
+func (f *followingQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (f *followingQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
 func (f *followingQuery) position() int {
 	return f.posit
 }
@@ -471,6 +666,14 @@ func (p *precedingQuery) Clone() query {
 	return &precedingQuery{Input: p.Input.Clone(), Sibling: p.Sibling, Predicate: p.Predicate}
 }
 
+func (p *precedingQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (p *precedingQuery) Properties() queryProp {
+	return queryProps.Merge | queryProps.Reverse
+}
+
 func (p *precedingQuery) position() int {
 	return p.posit
 }
@@ -503,6 +706,14 @@ func (p *parentQuery) Clone() query {
 	return &parentQuery{Input: p.Input.Clone(), Predicate: p.Predicate}
 }
 
+func (p *parentQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (p *parentQuery) Properties() queryProp {
+	return queryProps.Position | queryProps.Count | queryProps.Cached | queryProps.Merge
+}
+
 func (p *parentQuery) Test(n NodeNavigator) bool {
 	return p.Predicate(n)
 }
@@ -539,12 +750,22 @@ func (s *selfQuery) Clone() query {
 	return &selfQuery{Input: s.Input.Clone(), Predicate: s.Predicate}
 }
 
+func (s *selfQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (s *selfQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
 // filterQuery is an XPath query for predicate filter.
 type filterQuery struct {
-	Input     query
+	Input      query
-	Predicate query
+	Predicate  query
-	posit     int
+	NoPosition bool
-	positmap  map[int]int
+
+	posit    int
+	positmap map[int]int
 }
 
 func (f *filterQuery) do(t iterator) bool {
@@ -558,8 +779,8 @@ func (f *filterQuery) do(t iterator) bool {
 		pt := getNodePosition(f.Input)
 		return int(val.Float()) == pt
 	default:
-		if q, ok := f.Predicate.(query); ok {
+		if f.Predicate != nil {
-			return q.Select(t) != nil
+			return f.Predicate.Select(t) != nil
 		}
 	}
 	return false
@@ -577,7 +798,7 @@ func (f *filterQuery) Select(t iterator) NodeNavigator {
 
 		node := f.Input.Select(t)
 		if node == nil {
-			return node
+			return nil
 		}
 		node = node.Copy()
 
@@ -602,6 +823,14 @@ func (f *filterQuery) Clone() query {
 	return &filterQuery{Input: f.Input.Clone(), Predicate: f.Predicate.Clone()}
 }
 
+func (f *filterQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (f *filterQuery) Properties() queryProp {
+	return (queryProps.Position | f.Input.Properties()) & (queryProps.Reverse | queryProps.Merge)
+}
+
 // functionQuery is an XPath function that returns a computed value for
 // the Evaluate call of the current NodeNavigator node. Select call isn't
 // applicable for functionQuery.
@@ -621,9 +850,20 @@ func (f *functionQuery) Evaluate(t iterator) interface{} {
 }
 
 func (f *functionQuery) Clone() query {
+	if f.Input == nil {
+		return &functionQuery{Func: f.Func}
+	}
 	return &functionQuery{Input: f.Input.Clone(), Func: f.Func}
 }
 
+func (f *functionQuery) ValueType() resultType {
+	return xpathResultType.Any
+}
+
+func (f *functionQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
 // transformFunctionQuery diffs from functionQuery where the latter computes a scalar
 // value (number,string,boolean) for the current NodeNavigator node while the former
 // (transformFunctionQuery) performs a mapping or transform of the current NodeNavigator
@@ -652,6 +892,14 @@ func (f *transformFunctionQuery) Clone() query {
 	return &transformFunctionQuery{Input: f.Input.Clone(), Func: f.Func}
 }
 
+func (f *transformFunctionQuery) ValueType() resultType {
+	return xpathResultType.Any
+}
+
+func (f *transformFunctionQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
 // constantQuery is an XPath constant operand.
 type constantQuery struct {
 	Val interface{}
@@ -669,6 +917,14 @@ func (c *constantQuery) Clone() query {
 	return c
 }
 
+func (c *constantQuery) ValueType() resultType {
+	return getXPathType(c.Val)
+}
+
+func (c *constantQuery) Properties() queryProp {
+	return queryProps.Position | queryProps.Count | queryProps.Cached | queryProps.Merge
+}
+
 type groupQuery struct {
 	posit int
 
@@ -676,14 +932,12 @@ type groupQuery struct {
 }
 
 func (g *groupQuery) Select(t iterator) NodeNavigator {
-	for {
+	node := g.Input.Select(t)
-		node := g.Input.Select(t)
+	if node == nil {
-		if node == nil {
+		return nil
-			return nil
-		}
-		g.posit++
-		return node.Copy()
 	}
+	g.posit++
+	return node
 }
 
 func (g *groupQuery) Evaluate(t iterator) interface{} {
@@ -691,7 +945,15 @@ func (g *groupQuery) Evaluate(t iterator) interface{} {
 }
 
 func (g *groupQuery) Clone() query {
-	return &groupQuery{Input: g.Input}
+	return &groupQuery{Input: g.Input.Clone()}
+}
+
+func (g *groupQuery) ValueType() resultType {
+	return g.Input.ValueType()
+}
+
+func (g *groupQuery) Properties() queryProp {
+	return queryProps.Position
 }
 
 func (g *groupQuery) position() int {
@@ -728,11 +990,19 @@ func (l *logicalQuery) Clone() query {
 	return &logicalQuery{Left: l.Left.Clone(), Right: l.Right.Clone(), Do: l.Do}
 }
 
+func (l *logicalQuery) ValueType() resultType {
+	return xpathResultType.Boolean
+}
+
+func (l *logicalQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
 // numericQuery is an XPath numeric operator expression.
 type numericQuery struct {
 	Left, Right query
 
-	Do func(interface{}, interface{}) interface{}
+	Do func(iterator, interface{}, interface{}) interface{}
 }
 
 func (n *numericQuery) Select(t iterator) NodeNavigator {
@@ -742,13 +1012,21 @@ func (n *numericQuery) Select(t iterator) NodeNavigator {
 func (n *numericQuery) Evaluate(t iterator) interface{} {
 	m := n.Left.Evaluate(t)
 	k := n.Right.Evaluate(t)
-	return n.Do(m, k)
+	return n.Do(t, m, k)
 }
 
 func (n *numericQuery) Clone() query {
 	return &numericQuery{Left: n.Left.Clone(), Right: n.Right.Clone(), Do: n.Do}
 }
 
+func (n *numericQuery) ValueType() resultType {
+	return xpathResultType.Number
+}
+
+func (n *numericQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
 type booleanQuery struct {
 	IsOr        bool
 	Left, Right query
@@ -820,6 +1098,8 @@ func (b *booleanQuery) Select(t iterator) NodeNavigator {
 }
 
 func (b *booleanQuery) Evaluate(t iterator) interface{} {
+	n := t.Current().Copy()
+
 	m := b.Left.Evaluate(t)
 	left := asBool(t, m)
 	if b.IsOr && left {
@@ -827,6 +1107,8 @@ func (b *booleanQuery) Evaluate(t iterator) interface{} {
 	} else if !b.IsOr && !left {
 		return false
 	}
+
+	t.Current().MoveTo(n)
 	m = b.Right.Evaluate(t)
 	return asBool(t, m)
 }
@@ -835,6 +1117,14 @@ func (b *booleanQuery) Clone() query {
 	return &booleanQuery{IsOr: b.IsOr, Left: b.Left.Clone(), Right: b.Right.Clone()}
 }
 
+func (b *booleanQuery) ValueType() resultType {
+	return xpathResultType.Boolean
+}
+
+func (b *booleanQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
 type unionQuery struct {
 	Left, Right query
 	iterator    func() NodeNavigator
@@ -892,6 +1182,184 @@ func (u *unionQuery) Clone() query {
 	return &unionQuery{Left: u.Left.Clone(), Right: u.Right.Clone()}
 }
 
+func (u *unionQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (u *unionQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
+type lastFuncQuery struct {
+	buffer  []NodeNavigator
+	counted bool
+
+	Input query
+}
+
+func (q *lastFuncQuery) Select(t iterator) NodeNavigator {
+	return nil
+}
+
+func (q *lastFuncQuery) Evaluate(t iterator) interface{} {
+	if !q.counted {
+		for {
+			node := q.Input.Select(t)
+			if node == nil {
+				break
+			}
+			q.buffer = append(q.buffer, node.Copy())
+		}
+		q.counted = true
+	}
+	return float64(len(q.buffer))
+}
+
+func (q *lastFuncQuery) Clone() query {
+	return &lastFuncQuery{Input: q.Input.Clone()}
+}
+
+func (q *lastFuncQuery) ValueType() resultType {
+	return xpathResultType.Number
+}
+
+func (q *lastFuncQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
+type descendantOverDescendantQuery struct {
+	name        string
+	level       int
+	posit       int
+	currentNode NodeNavigator
+
+	Input     query
+	MatchSelf bool
+	Predicate func(NodeNavigator) bool
+}
+
+func (d *descendantOverDescendantQuery) moveToFirstChild() bool {
+	if d.currentNode.MoveToChild() {
+		d.level++
+		return true
+	}
+	return false
+}
+
+func (d *descendantOverDescendantQuery) moveUpUntilNext() bool {
+	for !d.currentNode.MoveToNext() {
+		d.level--
+		if d.level == 0 {
+			return false
+		}
+		d.currentNode.MoveToParent()
+	}
+	return true
+}
+
+func (d *descendantOverDescendantQuery) Select(t iterator) NodeNavigator {
+	for {
+		if d.level == 0 {
+			node := d.Input.Select(t)
+			if node == nil {
+				return nil
+			}
+			d.currentNode = node.Copy()
+			d.posit = 0
+			if d.MatchSelf && d.Predicate(d.currentNode) {
+				d.posit = 1
+				return d.currentNode
+			}
+			d.moveToFirstChild()
+		} else if !d.moveUpUntilNext() {
+			continue
+		}
+		for ok := true; ok; ok = d.moveToFirstChild() {
+			if d.Predicate(d.currentNode) {
+				d.posit++
+				return d.currentNode
+			}
+		}
+	}
+}
+
+func (d *descendantOverDescendantQuery) Evaluate(t iterator) interface{} {
+	d.Input.Evaluate(t)
+	return d
+}
+
+func (d *descendantOverDescendantQuery) Clone() query {
+	return &descendantOverDescendantQuery{Input: d.Input.Clone(), Predicate: d.Predicate, MatchSelf: d.MatchSelf}
+}
+
+func (d *descendantOverDescendantQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (d *descendantOverDescendantQuery) Properties() queryProp {
+	return queryProps.Merge
+}
+
+func (d *descendantOverDescendantQuery) position() int {
+	return d.posit
+}
+
+type mergeQuery struct {
+	Input query
+	Child query
+
+	iterator func() NodeNavigator
+}
+
+func (m *mergeQuery) Select(t iterator) NodeNavigator {
+	for {
+		if m.iterator == nil {
+			root := m.Input.Select(t)
+			if root == nil {
+				return nil
+			}
+			m.Child.Evaluate(t)
+			root = root.Copy()
+			t.Current().MoveTo(root)
+			var list []NodeNavigator
+			for node := m.Child.Select(t); node != nil; node = m.Child.Select(t) {
+				list = append(list, node.Copy())
+			}
+			i := 0
+			m.iterator = func() NodeNavigator {
+				if i >= len(list) {
+					return nil
+				}
+				result := list[i]
+				i++
+				return result
+			}
+		}
+
+		if node := m.iterator(); node != nil {
+			return node
+		}
+		m.iterator = nil
+	}
+}
+
+func (m *mergeQuery) Evaluate(t iterator) interface{} {
+	m.Input.Evaluate(t)
+	return m
+}
+
+func (m *mergeQuery) Clone() query {
+	return &mergeQuery{Input: m.Input.Clone(), Child: m.Child.Clone()}
+}
+
+func (m *mergeQuery) ValueType() resultType {
+	return xpathResultType.NodeSet
+}
+
+func (m *mergeQuery) Properties() queryProp {
+	return queryProps.Position | queryProps.Count | queryProps.Cached | queryProps.Merge
+}
+
 func getHashCode(n NodeNavigator) uint64 {
 	var sb bytes.Buffer
 	switch n.NodeType() {
@@ -927,7 +1395,7 @@ func getHashCode(n NodeNavigator) uint64 {
 		}
 	}
 	h := fnv.New64a()
-	h.Write([]byte(sb.String()))
+	h.Write(sb.Bytes())
 	return h.Sum64()
 }
 
@@ -950,3 +1418,20 @@ func getNodeDepth(q query) int {
 	}
 	return 0
 }
+
+func getXPathType(i interface{}) resultType {
+	v := reflect.ValueOf(i)
+	switch v.Kind() {
+	case reflect.Float64:
+		return xpathResultType.Number
+	case reflect.String:
+		return xpathResultType.String
+	case reflect.Bool:
+		return xpathResultType.Boolean
+	default:
+		if _, ok := i.(query); ok {
+			return xpathResultType.NodeSet
+		}
+	}
+	panic(fmt.Errorf("xpath unknown value type: %v", v.Kind()))
+}

vendor/github.com/antchfx/xpath/xpath.go

@@ -84,13 +84,13 @@ func (t *NodeIterator) Current() NodeNavigator {
 // MoveNext moves Navigator to the next match node.
 func (t *NodeIterator) MoveNext() bool {
 	n := t.query.Select(t)
-	if n != nil {
+	if n == nil {
-		if !t.node.MoveTo(n) {
+		return false
-			t.node = n.Copy()
-		}
-		return true
 	}
-	return false
+	if !t.node.MoveTo(n) {
+		t.node = n.Copy()
+	}
+	return true
 }
 
 // Select selects a node set using the specified XPath expression.
@@ -141,7 +141,7 @@ func Compile(expr string) (*Expr, error) {
 	if expr == "" {
 		return nil, errors.New("expr expression is nil")
 	}
-	qy, err := build(expr)
+	qy, err := build(expr, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -159,3 +159,18 @@ func MustCompile(expr string) *Expr {
 	}
 	return exp
 }
+
+// CompileWithNS compiles an XPath expression string, using given namespaces map.
+func CompileWithNS(expr string, namespaces map[string]string) (*Expr, error) {
+	if expr == "" {
+		return nil, errors.New("expr expression is nil")
+	}
+	qy, err := build(expr, namespaces)
+	if err != nil {
+		return nil, err
+	}
+	if qy == nil {
+		return nil, fmt.Errorf(fmt.Sprintf("undeclared variable in XPath expression: %s", expr))
+	}
+	return &Expr{s: expr, q: qy}, nil
+}

vendor/github.com/go-sql-driver/mysql/.gitignore

@@ -0,0 +1,9 @@
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+Icon?
+ehthumbs.db
+Thumbs.db
+.idea

vendor/github.com/go-sql-driver/mysql/AUTHORS

@@ -0,0 +1,142 @@
+# This is the official list of Go-MySQL-Driver authors for copyright purposes.
+
+# If you are submitting a patch, please add your name or the name of the
+# organization which holds the copyright to this list in alphabetical order.
+
+# Names should be added to this file as
+#	Name <email address>
+# The email address is not required for organizations.
+# Please keep the list sorted.
+
+
+# Individual Persons
+
+Aaron Hopkins <go-sql-driver at die.net>
+Achille Roussel <achille.roussel at gmail.com>
+Aidan <aidan.liu at pingcap.com>
+Alex Snast <alexsn at fb.com>
+Alexey Palazhchenko <alexey.palazhchenko at gmail.com>
+Andrew Reid <andrew.reid at tixtrack.com>
+Animesh Ray <mail.rayanimesh at gmail.com>
+Arne Hormann <arnehormann at gmail.com>
+Ariel Mashraki <ariel at mashraki.co.il>
+Asta Xie <xiemengjun at gmail.com>
+Brian Hendriks <brian at dolthub.com>
+Bulat Gaifullin <gaifullinbf at gmail.com>
+Caine Jette <jette at alum.mit.edu>
+Carlos Nieto <jose.carlos at menteslibres.net>
+Chris Kirkland <chriskirkland at github.com>
+Chris Moos <chris at tech9computers.com>
+Craig Wilson <craiggwilson at gmail.com>
+Daemonxiao <735462752 at qq.com>
+Daniel Montoya <dsmontoyam at gmail.com>
+Daniel Nichter <nil at codenode.com>
+Daniël van Eeden <git at myname.nl>
+Dave Protasowski <dprotaso at gmail.com>
+DisposaBoy <disposaboy at dby.me>
+Egor Smolyakov <egorsmkv at gmail.com>
+Erwan Martin <hello at erwan.io>
+Evan Elias <evan at skeema.net>
+Evan Shaw <evan at vendhq.com>
+Frederick Mayle <frederickmayle at gmail.com>
+Gustavo Kristic <gkristic at gmail.com>
+Gusted <postmaster at gusted.xyz>
+Hajime Nakagami <nakagami at gmail.com>
+Hanno Braun <mail at hannobraun.com>
+Henri Yandell <flamefew at gmail.com>
+Hirotaka Yamamoto <ymmt2005 at gmail.com>
+Huyiguang <hyg at webterren.com>
+ICHINOSE Shogo <shogo82148 at gmail.com>
+Ilia Cimpoes <ichimpoesh at gmail.com>
+INADA Naoki <songofacandy at gmail.com>
+Jacek Szwec <szwec.jacek at gmail.com>
+James Harr <james.harr at gmail.com>
+Janek Vedock <janekvedock at comcast.net>
+Jason Ng <oblitorum at gmail.com>
+Jean-Yves Pellé <jy at pelle.link>
+Jeff Hodges <jeff at somethingsimilar.com>
+Jeffrey Charles <jeffreycharles at gmail.com>
+Jennifer Purevsuren <jennifer at dolthub.com>
+Jerome Meyer <jxmeyer at gmail.com>
+Jiajia Zhong <zhong2plus at gmail.com>
+Jian Zhen <zhenjl at gmail.com>
+Joshua Prunier <joshua.prunier at gmail.com>
+Julien Lefevre <julien.lefevr at gmail.com>
+Julien Schmidt <go-sql-driver at julienschmidt.com>
+Justin Li <jli at j-li.net>
+Justin Nuß <nuss.justin at gmail.com>
+Kamil Dziedzic <kamil at klecza.pl>
+Kei Kamikawa <x00.x7f.x86 at gmail.com>
+Kevin Malachowski <kevin at chowski.com>
+Kieron Woodhouse <kieron.woodhouse at infosum.com>
+Lance Tian <lance6716 at gmail.com>
+Lennart Rudolph <lrudolph at hmc.edu>
+Leonardo YongUk Kim <dalinaum at gmail.com>
+Linh Tran Tuan <linhduonggnu at gmail.com>
+Lion Yang <lion at aosc.xyz>
+Luca Looz <luca.looz92 at gmail.com>
+Lucas Liu <extrafliu at gmail.com>
+Lunny Xiao <xiaolunwen at gmail.com>
+Luke Scott <luke at webconnex.com>
+Maciej Zimnoch <maciej.zimnoch at codilime.com>
+Michael Woolnough <michael.woolnough at gmail.com>
+Nathanial Murphy <nathanial.murphy at gmail.com>
+Nicola Peduzzi <thenikso at gmail.com>
+Oliver Bone <owbone at github.com>
+Olivier Mengué <dolmen at cpan.org>
+oscarzhao <oscarzhaosl at gmail.com>
+Paul Bonser <misterpib at gmail.com>
+Paulius Lozys <pauliuslozys at gmail.com>
+Peter Schultz <peter.schultz at classmarkets.com>
+Phil Porada <philporada at gmail.com>
+Rebecca Chin <rchin at pivotal.io>
+Reed Allman <rdallman10 at gmail.com>
+Richard Wilkes <wilkes at me.com>
+Robert Russell <robert at rrbrussell.com>
+Runrioter Wung <runrioter at gmail.com>
+Samantha Frank <hello at entropy.cat>
+Santhosh Kumar Tekuri <santhosh.tekuri at gmail.com>
+Sho Iizuka <sho.i518 at gmail.com>
+Sho Ikeda <suicaicoca at gmail.com>
+Shuode Li <elemount at qq.com>
+Simon J Mudd <sjmudd at pobox.com>
+Soroush Pour <me at soroushjp.com>
+Stan Putrya <root.vagner at gmail.com>
+Stanley Gunawan <gunawan.stanley at gmail.com>
+Steven Hartland <steven.hartland at multiplay.co.uk>
+Tan Jinhua <312841925 at qq.com>
+Tetsuro Aoki <t.aoki1130 at gmail.com>
+Thomas Wodarek <wodarekwebpage at gmail.com>
+Tim Ruffles <timruffles at gmail.com>
+Tom Jenkinson <tom at tjenkinson.me>
+Vladimir Kovpak <cn007b at gmail.com>
+Vladyslav Zhelezniak <zhvladi at gmail.com>
+Xiangyu Hu <xiangyu.hu at outlook.com>
+Xiaobing Jiang <s7v7nislands at gmail.com>
+Xiuming Chen <cc at cxm.cc>
+Xuehong Chan <chanxuehong at gmail.com>
+Zhang Xiang <angwerzx at 126.com>
+Zhenye Xie <xiezhenye at gmail.com>
+Zhixin Wen <john.wenzhixin at gmail.com>
+Ziheng Lyu <zihenglv at gmail.com>
+
+# Organizations
+
+Barracuda Networks, Inc.
+Counting Ltd.
+DigitalOcean Inc.
+Dolthub Inc.
+dyves labs AG
+Facebook Inc.
+GitHub Inc.
+Google Inc.
+InfoSum Ltd.
+Keybase Inc.
+Microsoft Corp.
+Multiplay Ltd.
+Percona LLC
+PingCAP Inc.
+Pivotal Inc.
+Shattered Silicon Ltd.
+Stripe Inc.
+Zendesk Inc.

vendor/github.com/go-sql-driver/mysql/CHANGELOG.md

@@ -0,0 +1,308 @@
+## Version 1.8.1 (2024-03-26)
+
+Bugfixes:
+
+- fix race condition when context is canceled in [#1562](https://github.com/go-sql-driver/mysql/pull/1562) and [#1570](https://github.com/go-sql-driver/mysql/pull/1570)
+
+## Version 1.8.0 (2024-03-09)
+
+Major Changes:
+
+- Use `SET NAMES charset COLLATE collation`. by @methane in [#1437](https://github.com/go-sql-driver/mysql/pull/1437)
+  - Older go-mysql-driver used `collation_id` in the handshake packet. But it caused collation mismatch in some situation.
+  - If you don't specify charset nor collation, go-mysql-driver sends `SET NAMES utf8mb4` for new connection. This uses server's default collation for utf8mb4.
+  - If you specify charset, go-mysql-driver sends `SET NAMES <charset>`. This uses the server's default collation for `<charset>`.
+  - If you specify collation and/or charset, go-mysql-driver sends `SET NAMES charset COLLATE collation`.
+- PathEscape dbname in DSN. by @methane in [#1432](https://github.com/go-sql-driver/mysql/pull/1432)
+  - This is backward incompatible in rare case. Check your DSN.
+- Drop Go 1.13-17 support by @methane in [#1420](https://github.com/go-sql-driver/mysql/pull/1420)
+  - Use Go 1.18+
+- Parse numbers on text protocol too by @methane in [#1452](https://github.com/go-sql-driver/mysql/pull/1452)
+  - When text protocol is used, go-mysql-driver passed bare `[]byte` to database/sql for avoid unnecessary allocation and conversion.
+  - If user specified `*any` to `Scan()`, database/sql passed the `[]byte` into the target variable.
+  - This confused users because most user doesn't know when text/binary protocol used.
+  - go-mysql-driver 1.8 converts integer/float values into int64/double even in text protocol. This doesn't increase allocation compared to `[]byte` and conversion cost is negatable.
+- New options start using the Functional Option Pattern to avoid increasing technical debt in the Config object. Future version may introduce Functional Option for existing options, but not for now.
+  - Make TimeTruncate functional option by @methane in [1552](https://github.com/go-sql-driver/mysql/pull/1552)
+  - Add BeforeConnect callback to configuration object by @ItalyPaleAle in [#1469](https://github.com/go-sql-driver/mysql/pull/1469)
+
+
+Other changes:
+
+- Adding DeregisterDialContext to prevent memory leaks with dialers we don't need anymore by @jypelle in https://github.com/go-sql-driver/mysql/pull/1422
+- Make logger configurable per connection by @frozenbonito in https://github.com/go-sql-driver/mysql/pull/1408
+- Fix ColumnType.DatabaseTypeName for mediumint unsigned by @evanelias in https://github.com/go-sql-driver/mysql/pull/1428
+- Add connection attributes by @Daemonxiao in https://github.com/go-sql-driver/mysql/pull/1389
+- Stop `ColumnTypeScanType()` from returning `sql.RawBytes` by @methane in https://github.com/go-sql-driver/mysql/pull/1424
+- Exec() now provides access to status of multiple statements. by @mherr-google in https://github.com/go-sql-driver/mysql/pull/1309
+- Allow to change (or disable) the default driver name for registration by @dolmen in https://github.com/go-sql-driver/mysql/pull/1499
+- Add default connection attribute '_server_host' by @oblitorum in https://github.com/go-sql-driver/mysql/pull/1506
+- QueryUnescape DSN ConnectionAttribute value by @zhangyangyu in https://github.com/go-sql-driver/mysql/pull/1470
+- Add client_ed25519 authentication by @Gusted in https://github.com/go-sql-driver/mysql/pull/1518
+
+## Version 1.7.1 (2023-04-25)
+
+Changes:
+
+  - bump actions/checkout@v3 and actions/setup-go@v3 (#1375)
+  - Add go1.20 and mariadb10.11 to the testing matrix (#1403)
+  - Increase default maxAllowedPacket size. (#1411)
+
+Bugfixes:
+
+  - Use SET syntax as specified in the MySQL documentation (#1402)
+
+
+## Version 1.7 (2022-11-29)
+
+Changes:
+
+  - Drop support of Go 1.12 (#1211)
+  - Refactoring `(*textRows).readRow` in a more clear way (#1230)
+  - util: Reduce boundary check in escape functions. (#1316)
+  - enhancement for mysqlConn handleAuthResult (#1250)
+
+New Features:
+
+  - support Is comparison on MySQLError (#1210)
+  - return unsigned in database type name when necessary (#1238)
+  - Add API to express like a --ssl-mode=PREFERRED MySQL client (#1370)
+  - Add SQLState to MySQLError (#1321)
+
+Bugfixes:
+
+  -  Fix parsing 0 year. (#1257)
+
+
+## Version 1.6 (2021-04-01)
+
+Changes:
+
+  - Migrate the CI service from travis-ci to GitHub Actions (#1176, #1183, #1190)
+  - `NullTime` is deprecated (#960, #1144)
+  - Reduce allocations when building SET command (#1111)
+  - Performance improvement for time formatting (#1118)
+  - Performance improvement for time parsing (#1098, #1113)
+
+New Features:
+
+  - Implement `driver.Validator` interface (#1106, #1174)
+  - Support returning `uint64` from `Valuer` in `ConvertValue` (#1143)
+  - Add `json.RawMessage` for converter and prepared statement (#1059)
+  - Interpolate `json.RawMessage` as `string` (#1058)
+  - Implements `CheckNamedValue` (#1090)
+
+Bugfixes:
+
+  - Stop rounding times (#1121, #1172)
+  - Put zero filler into the SSL handshake packet (#1066)
+  - Fix checking cancelled connections back into the connection pool (#1095)
+  - Fix remove last 0 byte for mysql_old_password when password is empty (#1133)
+
+
+## Version 1.5 (2020-01-07)
+
+Changes:
+
+  - Dropped support Go 1.9 and lower (#823, #829, #886, #1016, #1017)
+  - Improve buffer handling (#890)
+  - Document potentially insecure TLS configs (#901)
+  - Use a double-buffering scheme to prevent data races (#943)
+  - Pass uint64 values without converting them to string (#838, #955)
+  - Update collations and make utf8mb4 default (#877, #1054)
+  - Make NullTime compatible with sql.NullTime in Go 1.13+ (#995)
+  - Removed CloudSQL support (#993, #1007)
+  - Add Go Module support (#1003)
+
+New Features:
+
+  - Implement support of optional TLS (#900)
+  - Check connection liveness (#934, #964, #997, #1048, #1051, #1052)
+  - Implement Connector Interface (#941, #958, #1020, #1035)
+
+Bugfixes:
+
+  - Mark connections as bad on error during ping (#875)
+  - Mark connections as bad on error during dial (#867)
+  - Fix connection leak caused by rapid context cancellation (#1024)
+  - Mark connections as bad on error during Conn.Prepare (#1030)
+
+
+## Version 1.4.1 (2018-11-14)
+
+Bugfixes:
+
+ - Fix TIME format for binary columns (#818)
+ - Fix handling of empty auth plugin names (#835)
+ - Fix caching_sha2_password with empty password (#826)
+ - Fix canceled context broke mysqlConn (#862)
+ - Fix OldAuthSwitchRequest support (#870)
+ - Fix Auth Response packet for cleartext password (#887)
+
+## Version 1.4 (2018-06-03)
+
+Changes:
+
+ - Documentation fixes (#530, #535, #567)
+ - Refactoring (#575, #579, #580, #581, #603, #615, #704)
+ - Cache column names (#444)
+ - Sort the DSN parameters in DSNs generated from a config (#637)
+ - Allow native password authentication by default (#644)
+ - Use the default port if it is missing in the DSN (#668)
+ - Removed the `strict` mode (#676)
+ - Do not query `max_allowed_packet` by default (#680)
+ - Dropped support Go 1.6 and lower (#696)
+ - Updated `ConvertValue()` to match the database/sql/driver implementation (#760)
+ - Document the usage of `0000-00-00T00:00:00` as the time.Time zero value (#783)
+ - Improved the compatibility of the authentication system (#807)
+
+New Features:
+
+ - Multi-Results support (#537)
+ - `rejectReadOnly` DSN option (#604)
+ - `context.Context` support (#608, #612, #627, #761)
+ - Transaction isolation level support (#619, #744)
+ - Read-Only transactions support (#618, #634)
+ - `NewConfig` function which initializes a config with default values (#679)
+ - Implemented the `ColumnType` interfaces (#667, #724)
+ - Support for custom string types in `ConvertValue` (#623)
+ - Implemented `NamedValueChecker`, improving support for uint64 with high bit set (#690, #709, #710)
+ - `caching_sha2_password` authentication plugin support (#794, #800, #801, #802)
+ - Implemented `driver.SessionResetter` (#779)
+ - `sha256_password` authentication plugin support (#808)
+
+Bugfixes:
+
+ - Use the DSN hostname as TLS default ServerName if `tls=true` (#564, #718)
+ - Fixed LOAD LOCAL DATA INFILE for empty files (#590)
+ - Removed columns definition cache since it sometimes cached invalid data (#592)
+ - Don't mutate registered TLS configs (#600)
+ - Make RegisterTLSConfig concurrency-safe (#613)
+ - Handle missing auth data in the handshake packet correctly (#646)
+ - Do not retry queries when data was written to avoid data corruption (#302, #736)
+ - Cache the connection pointer for error handling before invalidating it (#678)
+ - Fixed imports for appengine/cloudsql (#700)
+ - Fix sending STMT_LONG_DATA for 0 byte data (#734)
+ - Set correct capacity for []bytes read from length-encoded strings (#766)
+ - Make RegisterDial concurrency-safe (#773)
+
+
+## Version 1.3 (2016-12-01)
+
+Changes:
+
+ - Go 1.1 is no longer supported
+ - Use decimals fields in MySQL to format time types (#249)
+ - Buffer optimizations (#269)
+ - TLS ServerName defaults to the host (#283)
+ - Refactoring (#400, #410, #437)
+ - Adjusted documentation for second generation CloudSQL (#485)
+ - Documented DSN system var quoting rules (#502)
+ - Made statement.Close() calls idempotent to avoid errors in Go 1.6+ (#512)
+
+New Features:
+
+ - Enable microsecond resolution on TIME, DATETIME and TIMESTAMP (#249)
+ - Support for returning table alias on Columns() (#289, #359, #382)
+ - Placeholder interpolation, can be activated with the DSN parameter `interpolateParams=true` (#309, #318, #490)
+ - Support for uint64 parameters with high bit set (#332, #345)
+ - Cleartext authentication plugin support (#327)
+ - Exported ParseDSN function and the Config struct (#403, #419, #429)
+ - Read / Write timeouts (#401)
+ - Support for JSON field type (#414)
+ - Support for multi-statements and multi-results (#411, #431)
+ - DSN parameter to set the driver-side max_allowed_packet value manually (#489)
+ - Native password authentication plugin support (#494, #524)
+
+Bugfixes:
+
+ - Fixed handling of queries without columns and rows (#255)
+ - Fixed a panic when SetKeepAlive() failed (#298)
+ - Handle ERR packets while reading rows (#321)
+ - Fixed reading NULL length-encoded integers in MySQL 5.6+ (#349)
+ - Fixed absolute paths support in LOAD LOCAL DATA INFILE (#356)
+ - Actually zero out bytes in handshake response (#378)
+ - Fixed race condition in registering LOAD DATA INFILE handler (#383)
+ - Fixed tests with MySQL 5.7.9+ (#380)
+ - QueryUnescape TLS config names (#397)
+ - Fixed "broken pipe" error by writing to closed socket (#390)
+ - Fixed LOAD LOCAL DATA INFILE buffering (#424)
+ - Fixed parsing of floats into float64 when placeholders are used (#434)
+ - Fixed DSN tests with Go 1.7+ (#459)
+ - Handle ERR packets while waiting for EOF (#473)
+ - Invalidate connection on error while discarding additional results (#513)
+ - Allow terminating packets of length 0 (#516)
+
+
+## Version 1.2 (2014-06-03)
+
+Changes:
+
+ - We switched back to a "rolling release". `go get` installs the current master branch again
+ - Version v1 of the driver will not be maintained anymore. Go 1.0 is no longer supported by this driver
+ - Exported errors to allow easy checking from application code
+ - Enabled TCP Keepalives on TCP connections
+ - Optimized INFILE handling (better buffer size calculation, lazy init, ...)
+ - The DSN parser also checks for a missing separating slash
+ - Faster binary date / datetime to string formatting
+ - Also exported the MySQLWarning type
+ - mysqlConn.Close returns the first error encountered instead of ignoring all errors
+ - writePacket() automatically writes the packet size to the header
+ - readPacket() uses an iterative approach instead of the recursive approach to merge split packets
+
+New Features:
+
+ - `RegisterDial` allows the usage of a custom dial function to establish the network connection
+ - Setting the connection collation is possible with the `collation` DSN parameter. This parameter should be preferred over the `charset` parameter
+ - Logging of critical errors is configurable with `SetLogger`
+ - Google CloudSQL support
+
+Bugfixes:
+
+ - Allow more than 32 parameters in prepared statements
+ - Various old_password fixes
+ - Fixed TestConcurrent test to pass Go's race detection
+ - Fixed appendLengthEncodedInteger for large numbers
+ - Renamed readLengthEnodedString to readLengthEncodedString and skipLengthEnodedString to skipLengthEncodedString (fixed typo)
+
+
+## Version 1.1 (2013-11-02)
+
+Changes:
+
+  - Go-MySQL-Driver now requires Go 1.1
+  - Connections now use the collation `utf8_general_ci` by default. Adding `&charset=UTF8` to the DSN should not be necessary anymore
+  - Made closing rows and connections error tolerant. This allows for example deferring rows.Close() without checking for errors
+  - `[]byte(nil)` is now treated as a NULL value. Before, it was treated like an empty string / `[]byte("")`
+  - DSN parameter values must now be url.QueryEscape'ed. This allows text values to contain special characters, such as '&'.
+  - Use the IO buffer also for writing. This results in zero allocations (by the driver) for most queries
+  - Optimized the buffer for reading
+  - stmt.Query now caches column metadata
+  - New Logo
+  - Changed the copyright header to include all contributors
+  - Improved the LOAD INFILE documentation
+  - The driver struct is now exported to make the driver directly accessible
+  - Refactored the driver tests
+  - Added more benchmarks and moved all to a separate file
+  - Other small refactoring
+
+New Features:
+
+  - Added *old_passwords* support: Required in some cases, but must be enabled by adding `allowOldPasswords=true` to the DSN since it is insecure
+  - Added a `clientFoundRows` parameter: Return the number of matching rows instead of the number of rows changed on UPDATEs
+  - Added TLS/SSL support: Use a TLS/SSL encrypted connection to the server. Custom TLS configs can be registered and used
+
+Bugfixes:
+
+  - Fixed MySQL 4.1 support: MySQL 4.1 sends packets with lengths which differ from the specification
+  - Convert to DB timezone when inserting `time.Time`
+  - Split packets (more than 16MB) are now merged correctly
+  - Fixed false positive `io.EOF` errors when the data was fully read
+  - Avoid panics on reuse of closed connections
+  - Fixed empty string producing false nil values
+  - Fixed sign byte for positive TIME fields
+
+
+## Version 1.0 (2013-05-14)
+
+Initial Release

vendor/github.com/go-sql-driver/mysql/LICENSE

@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in 
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.

vendor/github.com/go-sql-driver/mysql/README.md

@@ -0,0 +1,581 @@
+# Go-MySQL-Driver
+
+A MySQL-Driver for Go's [database/sql](https://golang.org/pkg/database/sql/) package
+
+![Go-MySQL-Driver logo](https://raw.github.com/wiki/go-sql-driver/mysql/gomysql_m.png "Golang Gopher holding the MySQL Dolphin")
+
+---------------------------------------
+  * [Features](#features)
+  * [Requirements](#requirements)
+  * [Installation](#installation)
+  * [Usage](#usage)
+    * [DSN (Data Source Name)](#dsn-data-source-name)
+      * [Password](#password)
+      * [Protocol](#protocol)
+      * [Address](#address)
+      * [Parameters](#parameters)
+      * [Examples](#examples)
+    * [Connection pool and timeouts](#connection-pool-and-timeouts)
+    * [context.Context Support](#contextcontext-support)
+    * [ColumnType Support](#columntype-support)
+    * [LOAD DATA LOCAL INFILE support](#load-data-local-infile-support)
+    * [time.Time support](#timetime-support)
+    * [Unicode support](#unicode-support)
+  * [Testing / Development](#testing--development)
+  * [License](#license)
+
+---------------------------------------
+
+## Features
+  * Lightweight and [fast](https://github.com/go-sql-driver/sql-benchmark "golang MySQL-Driver performance")
+  * Native Go implementation. No C-bindings, just pure Go
+  * Connections over TCP/IPv4, TCP/IPv6, Unix domain sockets or [custom protocols](https://godoc.org/github.com/go-sql-driver/mysql#DialFunc)
+  * Automatic handling of broken connections
+  * Automatic Connection Pooling *(by database/sql package)*
+  * Supports queries larger than 16MB
+  * Full [`sql.RawBytes`](https://golang.org/pkg/database/sql/#RawBytes) support.
+  * Intelligent `LONG DATA` handling in prepared statements
+  * Secure `LOAD DATA LOCAL INFILE` support with file allowlisting and `io.Reader` support
+  * Optional `time.Time` parsing
+  * Optional placeholder interpolation
+
+## Requirements
+
+* Go 1.19 or higher. We aim to support the 3 latest versions of Go.
+* MySQL (5.7+) and MariaDB (10.3+) are supported.
+* [TiDB](https://github.com/pingcap/tidb) is supported by PingCAP.
+  * Do not ask questions about TiDB in our issue tracker or forum.
+  * [Document](https://docs.pingcap.com/tidb/v6.1/dev-guide-sample-application-golang)
+  * [Forum](https://ask.pingcap.com/)
+* go-mysql would work with Percona Server, Google CloudSQL or Sphinx (2.2.3+).
+  * Maintainers won't support them. Do not expect issues are investigated and resolved by maintainers.
+  * Investigate issues yourself and please send a pull request to fix it.
+
+---------------------------------------
+
+## Installation
+Simple install the package to your [$GOPATH](https://github.com/golang/go/wiki/GOPATH "GOPATH") with the [go tool](https://golang.org/cmd/go/ "go command") from shell:
+```bash
+go get -u github.com/go-sql-driver/mysql
+```
+Make sure [Git is installed](https://git-scm.com/downloads) on your machine and in your system's `PATH`.
+
+## Usage
+_Go MySQL Driver_ is an implementation of Go's `database/sql/driver` interface. You only need to import the driver and can use the full [`database/sql`](https://golang.org/pkg/database/sql/) API then.
+
+Use `mysql` as `driverName` and a valid [DSN](#dsn-data-source-name)  as `dataSourceName`:
+
+```go
+import (
+	"database/sql"
+	"time"
+
+	_ "github.com/go-sql-driver/mysql"
+)
+
+// ...
+
+db, err := sql.Open("mysql", "user:password@/dbname")
+if err != nil {
+	panic(err)
+}
+// See "Important settings" section.
+db.SetConnMaxLifetime(time.Minute * 3)
+db.SetMaxOpenConns(10)
+db.SetMaxIdleConns(10)
+```
+
+[Examples are available in our Wiki](https://github.com/go-sql-driver/mysql/wiki/Examples "Go-MySQL-Driver Examples").
+
+### Important settings
+
+`db.SetConnMaxLifetime()` is required to ensure connections are closed by the driver safely before connection is closed by MySQL server, OS, or other middlewares. Since some middlewares close idle connections by 5 minutes, we recommend timeout shorter than 5 minutes. This setting helps load balancing and changing system variables too.
+
+`db.SetMaxOpenConns()` is highly recommended to limit the number of connection used by the application. There is no recommended limit number because it depends on application and MySQL server.
+
+`db.SetMaxIdleConns()` is recommended to be set same to `db.SetMaxOpenConns()`. When it is smaller than `SetMaxOpenConns()`, connections can be opened and closed much more frequently than you expect. Idle connections can be closed by the `db.SetConnMaxLifetime()`. If you want to close idle connections more rapidly, you can use `db.SetConnMaxIdleTime()` since Go 1.15.
+
+
+### DSN (Data Source Name)
+
+The Data Source Name has a common format, like e.g. [PEAR DB](http://pear.php.net/manual/en/package.database.db.intro-dsn.php) uses it, but without type-prefix (optional parts marked by squared brackets):
+```
+[username[:password]@][protocol[(address)]]/dbname[?param1=value1&...&paramN=valueN]
+```
+
+A DSN in its fullest form:
+```
+username:password@protocol(address)/dbname?param=value
+```
+
+Except for the databasename, all values are optional. So the minimal DSN is:
+```
+/dbname
+```
+
+If you do not want to preselect a database, leave `dbname` empty:
+```
+/
+```
+This has the same effect as an empty DSN string:
+```
+
+```
+
+`dbname` is escaped by [PathEscape()](https://pkg.go.dev/net/url#PathEscape) since v1.8.0. If your database name is `dbname/withslash`, it becomes:
+
+```
+/dbname%2Fwithslash
+```
+
+Alternatively, [Config.FormatDSN](https://godoc.org/github.com/go-sql-driver/mysql#Config.FormatDSN) can be used to create a DSN string by filling a struct.
+
+#### Password
+Passwords can consist of any character. Escaping is **not** necessary.
+
+#### Protocol
+See [net.Dial](https://golang.org/pkg/net/#Dial) for more information which networks are available.
+In general you should use a Unix domain socket if available and TCP otherwise for best performance.
+
+#### Address
+For TCP and UDP networks, addresses have the form `host[:port]`.
+If `port` is omitted, the default port will be used.
+If `host` is a literal IPv6 address, it must be enclosed in square brackets.
+The functions [net.JoinHostPort](https://golang.org/pkg/net/#JoinHostPort) and [net.SplitHostPort](https://golang.org/pkg/net/#SplitHostPort) manipulate addresses in this form.
+
+For Unix domain sockets the address is the absolute path to the MySQL-Server-socket, e.g. `/var/run/mysqld/mysqld.sock` or `/tmp/mysql.sock`.
+
+#### Parameters
+*Parameters are case-sensitive!*
+
+Notice that any of `true`, `TRUE`, `True` or `1` is accepted to stand for a true boolean value. Not surprisingly, false can be specified as any of: `false`, `FALSE`, `False` or `0`.
+
+##### `allowAllFiles`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+
+`allowAllFiles=true` disables the file allowlist for `LOAD DATA LOCAL INFILE` and allows *all* files.
+[*Might be insecure!*](https://dev.mysql.com/doc/refman/8.0/en/load-data.html#load-data-local)
+
+##### `allowCleartextPasswords`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+
+`allowCleartextPasswords=true` allows using the [cleartext client side plugin](https://dev.mysql.com/doc/en/cleartext-pluggable-authentication.html) if required by an account, such as one defined with the [PAM authentication plugin](http://dev.mysql.com/doc/en/pam-authentication-plugin.html). Sending passwords in clear text may be a security problem in some configurations. To avoid problems if there is any possibility that the password would be intercepted, clients should connect to MySQL Server using a method that protects the password. Possibilities include [TLS / SSL](#tls), IPsec, or a private network.
+
+
+##### `allowFallbackToPlaintext`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+
+`allowFallbackToPlaintext=true` acts like a `--ssl-mode=PREFERRED` MySQL client as described in [Command Options for Connecting to the Server](https://dev.mysql.com/doc/refman/5.7/en/connection-options.html#option_general_ssl-mode)
+
+##### `allowNativePasswords`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        true
+```
+`allowNativePasswords=false` disallows the usage of MySQL native password method.
+
+##### `allowOldPasswords`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+`allowOldPasswords=true` allows the usage of the insecure old password method. This should be avoided, but is necessary in some cases. See also [the old_passwords wiki page](https://github.com/go-sql-driver/mysql/wiki/old_passwords).
+
+##### `charset`
+
+```
+Type:           string
+Valid Values:   <name>
+Default:        none
+```
+
+Sets the charset used for client-server interaction (`"SET NAMES <value>"`). If multiple charsets are set (separated by a comma), the following charset is used if setting the charset fails. This enables for example support for `utf8mb4` ([introduced in MySQL 5.5.3](http://dev.mysql.com/doc/refman/5.5/en/charset-unicode-utf8mb4.html)) with fallback to `utf8` for older servers (`charset=utf8mb4,utf8`).
+
+See also [Unicode Support](#unicode-support).
+
+##### `checkConnLiveness`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        true
+```
+
+On supported platforms connections retrieved from the connection pool are checked for liveness before using them. If the check fails, the respective connection is marked as bad and the query retried with another connection.
+`checkConnLiveness=false` disables this liveness check of connections.
+
+##### `collation`
+
+```
+Type:           string
+Valid Values:   <name>
+Default:        utf8mb4_general_ci
+```
+
+Sets the collation used for client-server interaction on connection. In contrast to `charset`, `collation` does not issue additional queries. If the specified collation is unavailable on the target server, the connection will fail.
+
+A list of valid charsets for a server is retrievable with `SHOW COLLATION`.
+
+The default collation (`utf8mb4_general_ci`) is supported from MySQL 5.5.  You should use an older collation (e.g. `utf8_general_ci`) for older MySQL.
+
+Collations for charset "ucs2", "utf16", "utf16le", and "utf32" can not be used ([ref](https://dev.mysql.com/doc/refman/5.7/en/charset-connection.html#charset-connection-impermissible-client-charset)).
+
+See also [Unicode Support](#unicode-support).
+
+##### `clientFoundRows`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+
+`clientFoundRows=true` causes an UPDATE to return the number of matching rows instead of the number of rows changed.
+
+##### `columnsWithAlias`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+
+When `columnsWithAlias` is true, calls to `sql.Rows.Columns()` will return the table alias and the column name separated by a dot. For example:
+
+```
+SELECT u.id FROM users as u
+```
+
+will return `u.id` instead of just `id` if `columnsWithAlias=true`.
+
+##### `interpolateParams`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+
+If `interpolateParams` is true, placeholders (`?`) in calls to `db.Query()` and `db.Exec()` are interpolated into a single query string with given parameters. This reduces the number of roundtrips, since the driver has to prepare a statement, execute it with given parameters and close the statement again with `interpolateParams=false`.
+
+*This can not be used together with the multibyte encodings BIG5, CP932, GB2312, GBK or SJIS. These are rejected as they may [introduce a SQL injection vulnerability](http://stackoverflow.com/a/12118602/3430118)!*
+
+##### `loc`
+
+```
+Type:           string
+Valid Values:   <escaped name>
+Default:        UTC
+```
+
+Sets the location for time.Time values (when using `parseTime=true`). *"Local"* sets the system's location. See [time.LoadLocation](https://golang.org/pkg/time/#LoadLocation) for details.
+
+Note that this sets the location for time.Time values but does not change MySQL's [time_zone setting](https://dev.mysql.com/doc/refman/5.5/en/time-zone-support.html). For that see the [time_zone system variable](#system-variables), which can also be set as a DSN parameter.
+
+Please keep in mind, that param values must be [url.QueryEscape](https://golang.org/pkg/net/url/#QueryEscape)'ed. Alternatively you can manually replace the `/` with `%2F`. For example `US/Pacific` would be `loc=US%2FPacific`.
+
+##### `timeTruncate`
+
+```
+Type:           duration
+Default:        0
+```
+
+[Truncate time values](https://pkg.go.dev/time#Duration.Truncate) to the specified duration. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
+
+##### `maxAllowedPacket`
+```
+Type:          decimal number
+Default:       64*1024*1024
+```
+
+Max packet size allowed in bytes. The default value is 64 MiB and should be adjusted to match the server settings. `maxAllowedPacket=0` can be used to automatically fetch the `max_allowed_packet` variable from server *on every connection*.
+
+##### `multiStatements`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+
+Allow multiple statements in one query. This can be used to bach multiple queries. Use [Rows.NextResultSet()](https://pkg.go.dev/database/sql#Rows.NextResultSet) to get result of the second and subsequent queries.
+
+When `multiStatements` is used, `?` parameters must only be used in the first statement. [interpolateParams](#interpolateparams) can be used to avoid this limitation unless prepared statement is used explicitly.
+
+It's possible to access the last inserted ID and number of affected rows for multiple statements by using `sql.Conn.Raw()` and the `mysql.Result`. For example:
+
+```go
+conn, _ := db.Conn(ctx)
+conn.Raw(func(conn any) error {
+  ex := conn.(driver.Execer)
+  res, err := ex.Exec(`
+  UPDATE point SET x = 1 WHERE y = 2;
+  UPDATE point SET x = 2 WHERE y = 3;
+  `, nil)
+  // Both slices have 2 elements.
+  log.Print(res.(mysql.Result).AllRowsAffected())
+  log.Print(res.(mysql.Result).AllLastInsertIds())
+})
+```
+
+##### `parseTime`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+
+`parseTime=true` changes the output type of `DATE` and `DATETIME` values to `time.Time` instead of `[]byte` / `string`
+The date or datetime like `0000-00-00 00:00:00` is converted into zero value of `time.Time`.
+
+
+##### `readTimeout`
+
+```
+Type:           duration
+Default:        0
+```
+
+I/O read timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
+
+##### `rejectReadOnly`
+
+```
+Type:           bool
+Valid Values:   true, false
+Default:        false
+```
+
+
+`rejectReadOnly=true` causes the driver to reject read-only connections. This
+is for a possible race condition during an automatic failover, where the mysql
+client gets connected to a read-only replica after the failover.
+
+Note that this should be a fairly rare case, as an automatic failover normally
+happens when the primary is down, and the race condition shouldn't happen
+unless it comes back up online as soon as the failover is kicked off. On the
+other hand, when this happens, a MySQL application can get stuck on a
+read-only connection until restarted. It is however fairly easy to reproduce,
+for example, using a manual failover on AWS Aurora's MySQL-compatible cluster.
+
+If you are not relying on read-only transactions to reject writes that aren't
+supposed to happen, setting this on some MySQL providers (such as AWS Aurora)
+is safer for failovers.
+
+Note that ERROR 1290 can be returned for a `read-only` server and this option will
+cause a retry for that error. However the same error number is used for some
+other cases. You should ensure your application will never cause an ERROR 1290
+except for `read-only` mode when enabling this option.
+
+
+##### `serverPubKey`
+
+```
+Type:           string
+Valid Values:   <name>
+Default:        none
+```
+
+Server public keys can be registered with [`mysql.RegisterServerPubKey`](https://godoc.org/github.com/go-sql-driver/mysql#RegisterServerPubKey), which can then be used by the assigned name in the DSN.
+Public keys are used to transmit encrypted data, e.g. for authentication.
+If the server's public key is known, it should be set manually to avoid expensive and potentially insecure transmissions of the public key from the server to the client each time it is required.
+
+
+##### `timeout`
+
+```
+Type:           duration
+Default:        OS default
+```
+
+Timeout for establishing connections, aka dial timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
+
+
+##### `tls`
+
+```
+Type:           bool / string
+Valid Values:   true, false, skip-verify, preferred, <name>
+Default:        false
+```
+
+`tls=true` enables TLS / SSL encrypted connection to the server. Use `skip-verify` if you want to use a self-signed or invalid certificate (server side) or use `preferred` to use TLS only when advertised by the server. This is similar to `skip-verify`, but additionally allows a fallback to a connection which is not encrypted. Neither `skip-verify` nor `preferred` add any reliable security. You can use a custom TLS config after registering it with [`mysql.RegisterTLSConfig`](https://godoc.org/github.com/go-sql-driver/mysql#RegisterTLSConfig).
+
+
+##### `writeTimeout`
+
+```
+Type:           duration
+Default:        0
+```
+
+I/O write timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
+
+##### `connectionAttributes`
+
+```
+Type:           comma-delimited string of user-defined "key:value" pairs
+Valid Values:   (<name1>:<value1>,<name2>:<value2>,...)
+Default:        none
+```
+
+[Connection attributes](https://dev.mysql.com/doc/refman/8.0/en/performance-schema-connection-attribute-tables.html) are key-value pairs that application programs can pass to the server at connect time.
+
+##### System Variables
+
+Any other parameters are interpreted as system variables:
+  * `<boolean_var>=<value>`: `SET <boolean_var>=<value>`
+  * `<enum_var>=<value>`: `SET <enum_var>=<value>`
+  * `<string_var>=%27<value>%27`: `SET <string_var>='<value>'`
+
+Rules:
+* The values for string variables must be quoted with `'`.
+* The values must also be [url.QueryEscape](http://golang.org/pkg/net/url/#QueryEscape)'ed!
+ (which implies values of string variables must be wrapped with `%27`).
+
+Examples:
+  * `autocommit=1`: `SET autocommit=1`
+  * [`time_zone=%27Europe%2FParis%27`](https://dev.mysql.com/doc/refman/5.5/en/time-zone-support.html): `SET time_zone='Europe/Paris'`
+  * [`transaction_isolation=%27REPEATABLE-READ%27`](https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_transaction_isolation): `SET transaction_isolation='REPEATABLE-READ'`
+
+
+#### Examples
+```
+user@unix(/path/to/socket)/dbname
+```
+
+```
+root:pw@unix(/tmp/mysql.sock)/myDatabase?loc=Local
+```
+
+```
+user:password@tcp(localhost:5555)/dbname?tls=skip-verify&autocommit=true
+```
+
+Treat warnings as errors by setting the system variable [`sql_mode`](https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html):
+```
+user:password@/dbname?sql_mode=TRADITIONAL
+```
+
+TCP via IPv6:
+```
+user:password@tcp([de:ad:be:ef::ca:fe]:80)/dbname?timeout=90s&collation=utf8mb4_unicode_ci
+```
+
+TCP on a remote host, e.g. Amazon RDS:
+```
+id:password@tcp(your-amazonaws-uri.com:3306)/dbname
+```
+
+Google Cloud SQL on App Engine:
+```
+user:password@unix(/cloudsql/project-id:region-name:instance-name)/dbname
+```
+
+TCP using default port (3306) on localhost:
+```
+user:password@tcp/dbname?charset=utf8mb4,utf8&sys_var=esc%40ped
+```
+
+Use the default protocol (tcp) and host (localhost:3306):
+```
+user:password@/dbname
+```
+
+No Database preselected:
+```
+user:password@/
+```
+
+
+### Connection pool and timeouts
+The connection pool is managed by Go's database/sql package. For details on how to configure the size of the pool and how long connections stay in the pool see `*DB.SetMaxOpenConns`, `*DB.SetMaxIdleConns`, and `*DB.SetConnMaxLifetime` in the [database/sql documentation](https://golang.org/pkg/database/sql/). The read, write, and dial timeouts for each individual connection are configured with the DSN parameters [`readTimeout`](#readtimeout), [`writeTimeout`](#writetimeout), and [`timeout`](#timeout), respectively.
+
+## `ColumnType` Support
+This driver supports the [`ColumnType` interface](https://golang.org/pkg/database/sql/#ColumnType) introduced in Go 1.8, with the exception of [`ColumnType.Length()`](https://golang.org/pkg/database/sql/#ColumnType.Length), which is currently not supported. All Unsigned database type names will be returned `UNSIGNED ` with `INT`, `TINYINT`, `SMALLINT`, `MEDIUMINT`, `BIGINT`.
+
+## `context.Context` Support
+Go 1.8 added `database/sql` support for `context.Context`. This driver supports query timeouts and cancellation via contexts.
+See [context support in the database/sql package](https://golang.org/doc/go1.8#database_sql) for more details.
+
+
+### `LOAD DATA LOCAL INFILE` support
+For this feature you need direct access to the package. Therefore you must change the import path (no `_`):
+```go
+import "github.com/go-sql-driver/mysql"
+```
+
+Files must be explicitly allowed by registering them with `mysql.RegisterLocalFile(filepath)` (recommended) or the allowlist check must be deactivated by using the DSN parameter `allowAllFiles=true` ([*Might be insecure!*](https://dev.mysql.com/doc/refman/8.0/en/load-data.html#load-data-local)).
+
+To use a `io.Reader` a handler function must be registered with `mysql.RegisterReaderHandler(name, handler)` which returns a `io.Reader` or `io.ReadCloser`. The Reader is available with the filepath `Reader::<name>` then. Choose different names for different handlers and `DeregisterReaderHandler` when you don't need it anymore.
+
+See the [godoc of Go-MySQL-Driver](https://godoc.org/github.com/go-sql-driver/mysql "golang mysql driver documentation") for details.
+
+
+### `time.Time` support
+The default internal output type of MySQL `DATE` and `DATETIME` values is `[]byte` which allows you to scan the value into a `[]byte`, `string` or `sql.RawBytes` variable in your program.
+
+However, many want to scan MySQL `DATE` and `DATETIME` values into `time.Time` variables, which is the logical equivalent in Go to `DATE` and `DATETIME` in MySQL. You can do that by changing the internal output type from `[]byte` to `time.Time` with the DSN parameter `parseTime=true`. You can set the default [`time.Time` location](https://golang.org/pkg/time/#Location) with the `loc` DSN parameter.
+
+**Caution:** As of Go 1.1, this makes `time.Time` the only variable type you can scan `DATE` and `DATETIME` values into. This breaks for example [`sql.RawBytes` support](https://github.com/go-sql-driver/mysql/wiki/Examples#rawbytes).
+
+
+### Unicode support
+Since version 1.5 Go-MySQL-Driver automatically uses the collation ` utf8mb4_general_ci` by default.
+
+Other charsets / collations can be set using the [`charset`](#charset) or [`collation`](#collation) DSN parameter.
+
+- When only the `charset` is specified, the `SET NAMES <charset>` query is sent and the server's default collation is used.
+- When both the `charset` and `collation` are specified, the `SET NAMES <charset> COLLATE <collation>` query is sent.
+- When only the `collation` is specified, the collation is specified in the protocol handshake and the `SET NAMES` query is not sent. This can save one roundtrip, but note that the server may ignore the specified collation silently and use the server's default charset/collation instead.
+
+See http://dev.mysql.com/doc/refman/8.0/en/charset-unicode.html for more details on MySQL's Unicode support.
+
+## Testing / Development
+To run the driver tests you may need to adjust the configuration. See the [Testing Wiki-Page](https://github.com/go-sql-driver/mysql/wiki/Testing "Testing") for details.
+
+Go-MySQL-Driver is not feature-complete yet. Your help is very appreciated.
+If you want to contribute, you can work on an [open issue](https://github.com/go-sql-driver/mysql/issues?state=open) or review a [pull request](https://github.com/go-sql-driver/mysql/pulls).
+
+See the [Contribution Guidelines](https://github.com/go-sql-driver/mysql/blob/master/.github/CONTRIBUTING.md) for details.
+
+---------------------------------------
+
+## License
+Go-MySQL-Driver is licensed under the [Mozilla Public License Version 2.0](https://raw.github.com/go-sql-driver/mysql/master/LICENSE)
+
+Mozilla summarizes the license scope as follows:
+> MPL: The copyleft applies to any files containing MPLed code.
+
+
+That means:
+  * You can **use** the **unchanged** source code both in private and commercially.
+  * When distributing, you **must publish** the source code of any **changed files** licensed under the MPL 2.0 under a) the MPL 2.0 itself or b) a compatible license (e.g. GPL 3.0 or Apache License 2.0).
+  * You **needn't publish** the source code of your library as long as the files licensed under the MPL 2.0 are **unchanged**.
+
+Please read the [MPL 2.0 FAQ](https://www.mozilla.org/en-US/MPL/2.0/FAQ/) if you have further questions regarding the license.
+
+You can read the full terms here: [LICENSE](https://raw.github.com/go-sql-driver/mysql/master/LICENSE).
+
+![Go Gopher and MySQL Dolphin](https://raw.github.com/wiki/go-sql-driver/mysql/go-mysql-driver_m.jpg "Golang Gopher transporting the MySQL Dolphin in a wheelbarrow")

vendor/github.com/go-sql-driver/mysql/atomic_bool.go

@@ -0,0 +1,19 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package.
+//
+// Copyright 2022 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+//go:build go1.19
+// +build go1.19
+
+package mysql
+
+import "sync/atomic"
+
+/******************************************************************************
+*                               Sync utils                                    *
+******************************************************************************/
+
+type atomicBool = atomic.Bool

vendor/github.com/go-sql-driver/mysql/atomic_bool_go118.go

@@ -0,0 +1,47 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package.
+//
+// Copyright 2022 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+//go:build !go1.19
+// +build !go1.19
+
+package mysql
+
+import "sync/atomic"
+
+/******************************************************************************
+*                               Sync utils                                    *
+******************************************************************************/
+
+// atomicBool is an implementation of atomic.Bool for older version of Go.
+// it is a wrapper around uint32 for usage as a boolean value with
+// atomic access.
+type atomicBool struct {
+	_     noCopy
+	value uint32
+}
+
+// Load returns whether the current boolean value is true
+func (ab *atomicBool) Load() bool {
+	return atomic.LoadUint32(&ab.value) > 0
+}
+
+// Store sets the value of the bool regardless of the previous value
+func (ab *atomicBool) Store(value bool) {
+	if value {
+		atomic.StoreUint32(&ab.value, 1)
+	} else {
+		atomic.StoreUint32(&ab.value, 0)
+	}
+}
+
+// Swap sets the value of the bool and returns the old value.
+func (ab *atomicBool) Swap(value bool) bool {
+	if value {
+		return atomic.SwapUint32(&ab.value, 1) > 0
+	}
+	return atomic.SwapUint32(&ab.value, 0) > 0
+}

vendor/github.com/go-sql-driver/mysql/auth.go

@@ -0,0 +1,484 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2018 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/sha1"
+	"crypto/sha256"
+	"crypto/sha512"
+	"crypto/x509"
+	"encoding/pem"
+	"fmt"
+	"sync"
+
+	"filippo.io/edwards25519"
+)
+
+// server pub keys registry
+var (
+	serverPubKeyLock     sync.RWMutex
+	serverPubKeyRegistry map[string]*rsa.PublicKey
+)
+
+// RegisterServerPubKey registers a server RSA public key which can be used to
+// send data in a secure manner to the server without receiving the public key
+// in a potentially insecure way from the server first.
+// Registered keys can afterwards be used adding serverPubKey=<name> to the DSN.
+//
+// Note: The provided rsa.PublicKey instance is exclusively owned by the driver
+// after registering it and may not be modified.
+//
+//	data, err := os.ReadFile("mykey.pem")
+//	if err != nil {
+//		log.Fatal(err)
+//	}
+//
+//	block, _ := pem.Decode(data)
+//	if block == nil || block.Type != "PUBLIC KEY" {
+//		log.Fatal("failed to decode PEM block containing public key")
+//	}
+//
+//	pub, err := x509.ParsePKIXPublicKey(block.Bytes)
+//	if err != nil {
+//		log.Fatal(err)
+//	}
+//
+//	if rsaPubKey, ok := pub.(*rsa.PublicKey); ok {
+//		mysql.RegisterServerPubKey("mykey", rsaPubKey)
+//	} else {
+//		log.Fatal("not a RSA public key")
+//	}
+func RegisterServerPubKey(name string, pubKey *rsa.PublicKey) {
+	serverPubKeyLock.Lock()
+	if serverPubKeyRegistry == nil {
+		serverPubKeyRegistry = make(map[string]*rsa.PublicKey)
+	}
+
+	serverPubKeyRegistry[name] = pubKey
+	serverPubKeyLock.Unlock()
+}
+
+// DeregisterServerPubKey removes the public key registered with the given name.
+func DeregisterServerPubKey(name string) {
+	serverPubKeyLock.Lock()
+	if serverPubKeyRegistry != nil {
+		delete(serverPubKeyRegistry, name)
+	}
+	serverPubKeyLock.Unlock()
+}
+
+func getServerPubKey(name string) (pubKey *rsa.PublicKey) {
+	serverPubKeyLock.RLock()
+	if v, ok := serverPubKeyRegistry[name]; ok {
+		pubKey = v
+	}
+	serverPubKeyLock.RUnlock()
+	return
+}
+
+// Hash password using pre 4.1 (old password) method
+// https://github.com/atcurtis/mariadb/blob/master/mysys/my_rnd.c
+type myRnd struct {
+	seed1, seed2 uint32
+}
+
+const myRndMaxVal = 0x3FFFFFFF
+
+// Pseudo random number generator
+func newMyRnd(seed1, seed2 uint32) *myRnd {
+	return &myRnd{
+		seed1: seed1 % myRndMaxVal,
+		seed2: seed2 % myRndMaxVal,
+	}
+}
+
+// Tested to be equivalent to MariaDB's floating point variant
+// http://play.golang.org/p/QHvhd4qved
+// http://play.golang.org/p/RG0q4ElWDx
+func (r *myRnd) NextByte() byte {
+	r.seed1 = (r.seed1*3 + r.seed2) % myRndMaxVal
+	r.seed2 = (r.seed1 + r.seed2 + 33) % myRndMaxVal
+
+	return byte(uint64(r.seed1) * 31 / myRndMaxVal)
+}
+
+// Generate binary hash from byte string using insecure pre 4.1 method
+func pwHash(password []byte) (result [2]uint32) {
+	var add uint32 = 7
+	var tmp uint32
+
+	result[0] = 1345345333
+	result[1] = 0x12345671
+
+	for _, c := range password {
+		// skip spaces and tabs in password
+		if c == ' ' || c == '\t' {
+			continue
+		}
+
+		tmp = uint32(c)
+		result[0] ^= (((result[0] & 63) + add) * tmp) + (result[0] << 8)
+		result[1] += (result[1] << 8) ^ result[0]
+		add += tmp
+	}
+
+	// Remove sign bit (1<<31)-1)
+	result[0] &= 0x7FFFFFFF
+	result[1] &= 0x7FFFFFFF
+
+	return
+}
+
+// Hash password using insecure pre 4.1 method
+func scrambleOldPassword(scramble []byte, password string) []byte {
+	scramble = scramble[:8]
+
+	hashPw := pwHash([]byte(password))
+	hashSc := pwHash(scramble)
+
+	r := newMyRnd(hashPw[0]^hashSc[0], hashPw[1]^hashSc[1])
+
+	var out [8]byte
+	for i := range out {
+		out[i] = r.NextByte() + 64
+	}
+
+	mask := r.NextByte()
+	for i := range out {
+		out[i] ^= mask
+	}
+
+	return out[:]
+}
+
+// Hash password using 4.1+ method (SHA1)
+func scramblePassword(scramble []byte, password string) []byte {
+	if len(password) == 0 {
+		return nil
+	}
+
+	// stage1Hash = SHA1(password)
+	crypt := sha1.New()
+	crypt.Write([]byte(password))
+	stage1 := crypt.Sum(nil)
+
+	// scrambleHash = SHA1(scramble + SHA1(stage1Hash))
+	// inner Hash
+	crypt.Reset()
+	crypt.Write(stage1)
+	hash := crypt.Sum(nil)
+
+	// outer Hash
+	crypt.Reset()
+	crypt.Write(scramble)
+	crypt.Write(hash)
+	scramble = crypt.Sum(nil)
+
+	// token = scrambleHash XOR stage1Hash
+	for i := range scramble {
+		scramble[i] ^= stage1[i]
+	}
+	return scramble
+}
+
+// Hash password using MySQL 8+ method (SHA256)
+func scrambleSHA256Password(scramble []byte, password string) []byte {
+	if len(password) == 0 {
+		return nil
+	}
+
+	// XOR(SHA256(password), SHA256(SHA256(SHA256(password)), scramble))
+
+	crypt := sha256.New()
+	crypt.Write([]byte(password))
+	message1 := crypt.Sum(nil)
+
+	crypt.Reset()
+	crypt.Write(message1)
+	message1Hash := crypt.Sum(nil)
+
+	crypt.Reset()
+	crypt.Write(message1Hash)
+	crypt.Write(scramble)
+	message2 := crypt.Sum(nil)
+
+	for i := range message1 {
+		message1[i] ^= message2[i]
+	}
+
+	return message1
+}
+
+func encryptPassword(password string, seed []byte, pub *rsa.PublicKey) ([]byte, error) {
+	plain := make([]byte, len(password)+1)
+	copy(plain, password)
+	for i := range plain {
+		j := i % len(seed)
+		plain[i] ^= seed[j]
+	}
+	sha1 := sha1.New()
+	return rsa.EncryptOAEP(sha1, rand.Reader, pub, plain, nil)
+}
+
+// authEd25519 does ed25519 authentication used by MariaDB.
+func authEd25519(scramble []byte, password string) ([]byte, error) {
+	// Derived from https://github.com/MariaDB/server/blob/d8e6bb00888b1f82c031938f4c8ac5d97f6874c3/plugin/auth_ed25519/ref10/sign.c
+	// Code style is from https://cs.opensource.google/go/go/+/refs/tags/go1.21.5:src/crypto/ed25519/ed25519.go;l=207
+	h := sha512.Sum512([]byte(password))
+
+	s, err := edwards25519.NewScalar().SetBytesWithClamping(h[:32])
+	if err != nil {
+		return nil, err
+	}
+	A := (&edwards25519.Point{}).ScalarBaseMult(s)
+
+	mh := sha512.New()
+	mh.Write(h[32:])
+	mh.Write(scramble)
+	messageDigest := mh.Sum(nil)
+	r, err := edwards25519.NewScalar().SetUniformBytes(messageDigest)
+	if err != nil {
+		return nil, err
+	}
+
+	R := (&edwards25519.Point{}).ScalarBaseMult(r)
+
+	kh := sha512.New()
+	kh.Write(R.Bytes())
+	kh.Write(A.Bytes())
+	kh.Write(scramble)
+	hramDigest := kh.Sum(nil)
+	k, err := edwards25519.NewScalar().SetUniformBytes(hramDigest)
+	if err != nil {
+		return nil, err
+	}
+
+	S := k.MultiplyAdd(k, s, r)
+
+	return append(R.Bytes(), S.Bytes()...), nil
+}
+
+func (mc *mysqlConn) sendEncryptedPassword(seed []byte, pub *rsa.PublicKey) error {
+	enc, err := encryptPassword(mc.cfg.Passwd, seed, pub)
+	if err != nil {
+		return err
+	}
+	return mc.writeAuthSwitchPacket(enc)
+}
+
+func (mc *mysqlConn) auth(authData []byte, plugin string) ([]byte, error) {
+	switch plugin {
+	case "caching_sha2_password":
+		authResp := scrambleSHA256Password(authData, mc.cfg.Passwd)
+		return authResp, nil
+
+	case "mysql_old_password":
+		if !mc.cfg.AllowOldPasswords {
+			return nil, ErrOldPassword
+		}
+		if len(mc.cfg.Passwd) == 0 {
+			return nil, nil
+		}
+		// Note: there are edge cases where this should work but doesn't;
+		// this is currently "wontfix":
+		// https://github.com/go-sql-driver/mysql/issues/184
+		authResp := append(scrambleOldPassword(authData[:8], mc.cfg.Passwd), 0)
+		return authResp, nil
+
+	case "mysql_clear_password":
+		if !mc.cfg.AllowCleartextPasswords {
+			return nil, ErrCleartextPassword
+		}
+		// http://dev.mysql.com/doc/refman/5.7/en/cleartext-authentication-plugin.html
+		// http://dev.mysql.com/doc/refman/5.7/en/pam-authentication-plugin.html
+		return append([]byte(mc.cfg.Passwd), 0), nil
+
+	case "mysql_native_password":
+		if !mc.cfg.AllowNativePasswords {
+			return nil, ErrNativePassword
+		}
+		// https://dev.mysql.com/doc/internals/en/secure-password-authentication.html
+		// Native password authentication only need and will need 20-byte challenge.
+		authResp := scramblePassword(authData[:20], mc.cfg.Passwd)
+		return authResp, nil
+
+	case "sha256_password":
+		if len(mc.cfg.Passwd) == 0 {
+			return []byte{0}, nil
+		}
+		// unlike caching_sha2_password, sha256_password does not accept
+		// cleartext password on unix transport.
+		if mc.cfg.TLS != nil {
+			// write cleartext auth packet
+			return append([]byte(mc.cfg.Passwd), 0), nil
+		}
+
+		pubKey := mc.cfg.pubKey
+		if pubKey == nil {
+			// request public key from server
+			return []byte{1}, nil
+		}
+
+		// encrypted password
+		enc, err := encryptPassword(mc.cfg.Passwd, authData, pubKey)
+		return enc, err
+
+	case "client_ed25519":
+		if len(authData) != 32 {
+			return nil, ErrMalformPkt
+		}
+		return authEd25519(authData, mc.cfg.Passwd)
+
+	default:
+		mc.log("unknown auth plugin:", plugin)
+		return nil, ErrUnknownPlugin
+	}
+}
+
+func (mc *mysqlConn) handleAuthResult(oldAuthData []byte, plugin string) error {
+	// Read Result Packet
+	authData, newPlugin, err := mc.readAuthResult()
+	if err != nil {
+		return err
+	}
+
+	// handle auth plugin switch, if requested
+	if newPlugin != "" {
+		// If CLIENT_PLUGIN_AUTH capability is not supported, no new cipher is
+		// sent and we have to keep using the cipher sent in the init packet.
+		if authData == nil {
+			authData = oldAuthData
+		} else {
+			// copy data from read buffer to owned slice
+			copy(oldAuthData, authData)
+		}
+
+		plugin = newPlugin
+
+		authResp, err := mc.auth(authData, plugin)
+		if err != nil {
+			return err
+		}
+		if err = mc.writeAuthSwitchPacket(authResp); err != nil {
+			return err
+		}
+
+		// Read Result Packet
+		authData, newPlugin, err = mc.readAuthResult()
+		if err != nil {
+			return err
+		}
+
+		// Do not allow to change the auth plugin more than once
+		if newPlugin != "" {
+			return ErrMalformPkt
+		}
+	}
+
+	switch plugin {
+
+	// https://dev.mysql.com/blog-archive/preparing-your-community-connector-for-mysql-8-part-2-sha256/
+	case "caching_sha2_password":
+		switch len(authData) {
+		case 0:
+			return nil // auth successful
+		case 1:
+			switch authData[0] {
+			case cachingSha2PasswordFastAuthSuccess:
+				if err = mc.resultUnchanged().readResultOK(); err == nil {
+					return nil // auth successful
+				}
+
+			case cachingSha2PasswordPerformFullAuthentication:
+				if mc.cfg.TLS != nil || mc.cfg.Net == "unix" {
+					// write cleartext auth packet
+					err = mc.writeAuthSwitchPacket(append([]byte(mc.cfg.Passwd), 0))
+					if err != nil {
+						return err
+					}
+				} else {
+					pubKey := mc.cfg.pubKey
+					if pubKey == nil {
+						// request public key from server
+						data, err := mc.buf.takeSmallBuffer(4 + 1)
+						if err != nil {
+							return err
+						}
+						data[4] = cachingSha2PasswordRequestPublicKey
+						err = mc.writePacket(data)
+						if err != nil {
+							return err
+						}
+
+						if data, err = mc.readPacket(); err != nil {
+							return err
+						}
+
+						if data[0] != iAuthMoreData {
+							return fmt.Errorf("unexpected resp from server for caching_sha2_password, perform full authentication")
+						}
+
+						// parse public key
+						block, rest := pem.Decode(data[1:])
+						if block == nil {
+							return fmt.Errorf("no pem data found, data: %s", rest)
+						}
+						pkix, err := x509.ParsePKIXPublicKey(block.Bytes)
+						if err != nil {
+							return err
+						}
+						pubKey = pkix.(*rsa.PublicKey)
+					}
+
+					// send encrypted password
+					err = mc.sendEncryptedPassword(oldAuthData, pubKey)
+					if err != nil {
+						return err
+					}
+				}
+				return mc.resultUnchanged().readResultOK()
+
+			default:
+				return ErrMalformPkt
+			}
+		default:
+			return ErrMalformPkt
+		}
+
+	case "sha256_password":
+		switch len(authData) {
+		case 0:
+			return nil // auth successful
+		default:
+			block, _ := pem.Decode(authData)
+			if block == nil {
+				return fmt.Errorf("no Pem data found, data: %s", authData)
+			}
+
+			pub, err := x509.ParsePKIXPublicKey(block.Bytes)
+			if err != nil {
+				return err
+			}
+
+			// send encrypted password
+			err = mc.sendEncryptedPassword(oldAuthData, pub.(*rsa.PublicKey))
+			if err != nil {
+				return err
+			}
+			return mc.resultUnchanged().readResultOK()
+		}
+
+	default:
+		return nil // auth successful
+	}
+
+	return err
+}

vendor/github.com/go-sql-driver/mysql/buffer.go

@@ -0,0 +1,182 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"io"
+	"net"
+	"time"
+)
+
+const defaultBufSize = 4096
+const maxCachedBufSize = 256 * 1024
+
+// A buffer which is used for both reading and writing.
+// This is possible since communication on each connection is synchronous.
+// In other words, we can't write and read simultaneously on the same connection.
+// The buffer is similar to bufio.Reader / Writer but zero-copy-ish
+// Also highly optimized for this particular use case.
+// This buffer is backed by two byte slices in a double-buffering scheme
+type buffer struct {
+	buf     []byte // buf is a byte buffer who's length and capacity are equal.
+	nc      net.Conn
+	idx     int
+	length  int
+	timeout time.Duration
+	dbuf    [2][]byte // dbuf is an array with the two byte slices that back this buffer
+	flipcnt uint      // flipccnt is the current buffer counter for double-buffering
+}
+
+// newBuffer allocates and returns a new buffer.
+func newBuffer(nc net.Conn) buffer {
+	fg := make([]byte, defaultBufSize)
+	return buffer{
+		buf:  fg,
+		nc:   nc,
+		dbuf: [2][]byte{fg, nil},
+	}
+}
+
+// flip replaces the active buffer with the background buffer
+// this is a delayed flip that simply increases the buffer counter;
+// the actual flip will be performed the next time we call `buffer.fill`
+func (b *buffer) flip() {
+	b.flipcnt += 1
+}
+
+// fill reads into the buffer until at least _need_ bytes are in it
+func (b *buffer) fill(need int) error {
+	n := b.length
+	// fill data into its double-buffering target: if we've called
+	// flip on this buffer, we'll be copying to the background buffer,
+	// and then filling it with network data; otherwise we'll just move
+	// the contents of the current buffer to the front before filling it
+	dest := b.dbuf[b.flipcnt&1]
+
+	// grow buffer if necessary to fit the whole packet.
+	if need > len(dest) {
+		// Round up to the next multiple of the default size
+		dest = make([]byte, ((need/defaultBufSize)+1)*defaultBufSize)
+
+		// if the allocated buffer is not too large, move it to backing storage
+		// to prevent extra allocations on applications that perform large reads
+		if len(dest) <= maxCachedBufSize {
+			b.dbuf[b.flipcnt&1] = dest
+		}
+	}
+
+	// if we're filling the fg buffer, move the existing data to the start of it.
+	// if we're filling the bg buffer, copy over the data
+	if n > 0 {
+		copy(dest[:n], b.buf[b.idx:])
+	}
+
+	b.buf = dest
+	b.idx = 0
+
+	for {
+		if b.timeout > 0 {
+			if err := b.nc.SetReadDeadline(time.Now().Add(b.timeout)); err != nil {
+				return err
+			}
+		}
+
+		nn, err := b.nc.Read(b.buf[n:])
+		n += nn
+
+		switch err {
+		case nil:
+			if n < need {
+				continue
+			}
+			b.length = n
+			return nil
+
+		case io.EOF:
+			if n >= need {
+				b.length = n
+				return nil
+			}
+			return io.ErrUnexpectedEOF
+
+		default:
+			return err
+		}
+	}
+}
+
+// returns next N bytes from buffer.
+// The returned slice is only guaranteed to be valid until the next read
+func (b *buffer) readNext(need int) ([]byte, error) {
+	if b.length < need {
+		// refill
+		if err := b.fill(need); err != nil {
+			return nil, err
+		}
+	}
+
+	offset := b.idx
+	b.idx += need
+	b.length -= need
+	return b.buf[offset:b.idx], nil
+}
+
+// takeBuffer returns a buffer with the requested size.
+// If possible, a slice from the existing buffer is returned.
+// Otherwise a bigger buffer is made.
+// Only one buffer (total) can be used at a time.
+func (b *buffer) takeBuffer(length int) ([]byte, error) {
+	if b.length > 0 {
+		return nil, ErrBusyBuffer
+	}
+
+	// test (cheap) general case first
+	if length <= cap(b.buf) {
+		return b.buf[:length], nil
+	}
+
+	if length < maxPacketSize {
+		b.buf = make([]byte, length)
+		return b.buf, nil
+	}
+
+	// buffer is larger than we want to store.
+	return make([]byte, length), nil
+}
+
+// takeSmallBuffer is shortcut which can be used if length is
+// known to be smaller than defaultBufSize.
+// Only one buffer (total) can be used at a time.
+func (b *buffer) takeSmallBuffer(length int) ([]byte, error) {
+	if b.length > 0 {
+		return nil, ErrBusyBuffer
+	}
+	return b.buf[:length], nil
+}
+
+// takeCompleteBuffer returns the complete existing buffer.
+// This can be used if the necessary buffer size is unknown.
+// cap and len of the returned buffer will be equal.
+// Only one buffer (total) can be used at a time.
+func (b *buffer) takeCompleteBuffer() ([]byte, error) {
+	if b.length > 0 {
+		return nil, ErrBusyBuffer
+	}
+	return b.buf, nil
+}
+
+// store stores buf, an updated buffer, if its suitable to do so.
+func (b *buffer) store(buf []byte) error {
+	if b.length > 0 {
+		return ErrBusyBuffer
+	} else if cap(buf) <= maxPacketSize && cap(buf) > cap(b.buf) {
+		b.buf = buf[:cap(buf)]
+	}
+	return nil
+}

vendor/github.com/go-sql-driver/mysql/collations.go

@@ -0,0 +1,266 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2014 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+const defaultCollation = "utf8mb4_general_ci"
+const binaryCollationID = 63
+
+// A list of available collations mapped to the internal ID.
+// To update this map use the following MySQL query:
+//
+//	SELECT COLLATION_NAME, ID FROM information_schema.COLLATIONS WHERE ID<256 ORDER BY ID
+//
+// Handshake packet have only 1 byte for collation_id.  So we can't use collations with ID > 255.
+//
+// ucs2, utf16, and utf32 can't be used for connection charset.
+// https://dev.mysql.com/doc/refman/5.7/en/charset-connection.html#charset-connection-impermissible-client-charset
+// They are commented out to reduce this map.
+var collations = map[string]byte{
+	"big5_chinese_ci":      1,
+	"latin2_czech_cs":      2,
+	"dec8_swedish_ci":      3,
+	"cp850_general_ci":     4,
+	"latin1_german1_ci":    5,
+	"hp8_english_ci":       6,
+	"koi8r_general_ci":     7,
+	"latin1_swedish_ci":    8,
+	"latin2_general_ci":    9,
+	"swe7_swedish_ci":      10,
+	"ascii_general_ci":     11,
+	"ujis_japanese_ci":     12,
+	"sjis_japanese_ci":     13,
+	"cp1251_bulgarian_ci":  14,
+	"latin1_danish_ci":     15,
+	"hebrew_general_ci":    16,
+	"tis620_thai_ci":       18,
+	"euckr_korean_ci":      19,
+	"latin7_estonian_cs":   20,
+	"latin2_hungarian_ci":  21,
+	"koi8u_general_ci":     22,
+	"cp1251_ukrainian_ci":  23,
+	"gb2312_chinese_ci":    24,
+	"greek_general_ci":     25,
+	"cp1250_general_ci":    26,
+	"latin2_croatian_ci":   27,
+	"gbk_chinese_ci":       28,
+	"cp1257_lithuanian_ci": 29,
+	"latin5_turkish_ci":    30,
+	"latin1_german2_ci":    31,
+	"armscii8_general_ci":  32,
+	"utf8_general_ci":      33,
+	"cp1250_czech_cs":      34,
+	//"ucs2_general_ci":          35,
+	"cp866_general_ci":    36,
+	"keybcs2_general_ci":  37,
+	"macce_general_ci":    38,
+	"macroman_general_ci": 39,
+	"cp852_general_ci":    40,
+	"latin7_general_ci":   41,
+	"latin7_general_cs":   42,
+	"macce_bin":           43,
+	"cp1250_croatian_ci":  44,
+	"utf8mb4_general_ci":  45,
+	"utf8mb4_bin":         46,
+	"latin1_bin":          47,
+	"latin1_general_ci":   48,
+	"latin1_general_cs":   49,
+	"cp1251_bin":          50,
+	"cp1251_general_ci":   51,
+	"cp1251_general_cs":   52,
+	"macroman_bin":        53,
+	//"utf16_general_ci":         54,
+	//"utf16_bin":                55,
+	//"utf16le_general_ci":       56,
+	"cp1256_general_ci": 57,
+	"cp1257_bin":        58,
+	"cp1257_general_ci": 59,
+	//"utf32_general_ci":         60,
+	//"utf32_bin":                61,
+	//"utf16le_bin":              62,
+	"binary":          63,
+	"armscii8_bin":    64,
+	"ascii_bin":       65,
+	"cp1250_bin":      66,
+	"cp1256_bin":      67,
+	"cp866_bin":       68,
+	"dec8_bin":        69,
+	"greek_bin":       70,
+	"hebrew_bin":      71,
+	"hp8_bin":         72,
+	"keybcs2_bin":     73,
+	"koi8r_bin":       74,
+	"koi8u_bin":       75,
+	"utf8_tolower_ci": 76,
+	"latin2_bin":      77,
+	"latin5_bin":      78,
+	"latin7_bin":      79,
+	"cp850_bin":       80,
+	"cp852_bin":       81,
+	"swe7_bin":        82,
+	"utf8_bin":        83,
+	"big5_bin":        84,
+	"euckr_bin":       85,
+	"gb2312_bin":      86,
+	"gbk_bin":         87,
+	"sjis_bin":        88,
+	"tis620_bin":      89,
+	//"ucs2_bin":                 90,
+	"ujis_bin":            91,
+	"geostd8_general_ci":  92,
+	"geostd8_bin":         93,
+	"latin1_spanish_ci":   94,
+	"cp932_japanese_ci":   95,
+	"cp932_bin":           96,
+	"eucjpms_japanese_ci": 97,
+	"eucjpms_bin":         98,
+	"cp1250_polish_ci":    99,
+	//"utf16_unicode_ci":         101,
+	//"utf16_icelandic_ci":       102,
+	//"utf16_latvian_ci":         103,
+	//"utf16_romanian_ci":        104,
+	//"utf16_slovenian_ci":       105,
+	//"utf16_polish_ci":          106,
+	//"utf16_estonian_ci":        107,
+	//"utf16_spanish_ci":         108,
+	//"utf16_swedish_ci":         109,
+	//"utf16_turkish_ci":         110,
+	//"utf16_czech_ci":           111,
+	//"utf16_danish_ci":          112,
+	//"utf16_lithuanian_ci":      113,
+	//"utf16_slovak_ci":          114,
+	//"utf16_spanish2_ci":        115,
+	//"utf16_roman_ci":           116,
+	//"utf16_persian_ci":         117,
+	//"utf16_esperanto_ci":       118,
+	//"utf16_hungarian_ci":       119,
+	//"utf16_sinhala_ci":         120,
+	//"utf16_german2_ci":         121,
+	//"utf16_croatian_ci":        122,
+	//"utf16_unicode_520_ci":     123,
+	//"utf16_vietnamese_ci":      124,
+	//"ucs2_unicode_ci":          128,
+	//"ucs2_icelandic_ci":        129,
+	//"ucs2_latvian_ci":          130,
+	//"ucs2_romanian_ci":         131,
+	//"ucs2_slovenian_ci":        132,
+	//"ucs2_polish_ci":           133,
+	//"ucs2_estonian_ci":         134,
+	//"ucs2_spanish_ci":          135,
+	//"ucs2_swedish_ci":          136,
+	//"ucs2_turkish_ci":          137,
+	//"ucs2_czech_ci":            138,
+	//"ucs2_danish_ci":           139,
+	//"ucs2_lithuanian_ci":       140,
+	//"ucs2_slovak_ci":           141,
+	//"ucs2_spanish2_ci":         142,
+	//"ucs2_roman_ci":            143,
+	//"ucs2_persian_ci":          144,
+	//"ucs2_esperanto_ci":        145,
+	//"ucs2_hungarian_ci":        146,
+	//"ucs2_sinhala_ci":          147,
+	//"ucs2_german2_ci":          148,
+	//"ucs2_croatian_ci":         149,
+	//"ucs2_unicode_520_ci":      150,
+	//"ucs2_vietnamese_ci":       151,
+	//"ucs2_general_mysql500_ci": 159,
+	//"utf32_unicode_ci":         160,
+	//"utf32_icelandic_ci":       161,
+	//"utf32_latvian_ci":         162,
+	//"utf32_romanian_ci":        163,
+	//"utf32_slovenian_ci":       164,
+	//"utf32_polish_ci":          165,
+	//"utf32_estonian_ci":        166,
+	//"utf32_spanish_ci":         167,
+	//"utf32_swedish_ci":         168,
+	//"utf32_turkish_ci":         169,
+	//"utf32_czech_ci":           170,
+	//"utf32_danish_ci":          171,
+	//"utf32_lithuanian_ci":      172,
+	//"utf32_slovak_ci":          173,
+	//"utf32_spanish2_ci":        174,
+	//"utf32_roman_ci":           175,
+	//"utf32_persian_ci":         176,
+	//"utf32_esperanto_ci":       177,
+	//"utf32_hungarian_ci":       178,
+	//"utf32_sinhala_ci":         179,
+	//"utf32_german2_ci":         180,
+	//"utf32_croatian_ci":        181,
+	//"utf32_unicode_520_ci":     182,
+	//"utf32_vietnamese_ci":      183,
+	"utf8_unicode_ci":          192,
+	"utf8_icelandic_ci":        193,
+	"utf8_latvian_ci":          194,
+	"utf8_romanian_ci":         195,
+	"utf8_slovenian_ci":        196,
+	"utf8_polish_ci":           197,
+	"utf8_estonian_ci":         198,
+	"utf8_spanish_ci":          199,
+	"utf8_swedish_ci":          200,
+	"utf8_turkish_ci":          201,
+	"utf8_czech_ci":            202,
+	"utf8_danish_ci":           203,
+	"utf8_lithuanian_ci":       204,
+	"utf8_slovak_ci":           205,
+	"utf8_spanish2_ci":         206,
+	"utf8_roman_ci":            207,
+	"utf8_persian_ci":          208,
+	"utf8_esperanto_ci":        209,
+	"utf8_hungarian_ci":        210,
+	"utf8_sinhala_ci":          211,
+	"utf8_german2_ci":          212,
+	"utf8_croatian_ci":         213,
+	"utf8_unicode_520_ci":      214,
+	"utf8_vietnamese_ci":       215,
+	"utf8_general_mysql500_ci": 223,
+	"utf8mb4_unicode_ci":       224,
+	"utf8mb4_icelandic_ci":     225,
+	"utf8mb4_latvian_ci":       226,
+	"utf8mb4_romanian_ci":      227,
+	"utf8mb4_slovenian_ci":     228,
+	"utf8mb4_polish_ci":        229,
+	"utf8mb4_estonian_ci":      230,
+	"utf8mb4_spanish_ci":       231,
+	"utf8mb4_swedish_ci":       232,
+	"utf8mb4_turkish_ci":       233,
+	"utf8mb4_czech_ci":         234,
+	"utf8mb4_danish_ci":        235,
+	"utf8mb4_lithuanian_ci":    236,
+	"utf8mb4_slovak_ci":        237,
+	"utf8mb4_spanish2_ci":      238,
+	"utf8mb4_roman_ci":         239,
+	"utf8mb4_persian_ci":       240,
+	"utf8mb4_esperanto_ci":     241,
+	"utf8mb4_hungarian_ci":     242,
+	"utf8mb4_sinhala_ci":       243,
+	"utf8mb4_german2_ci":       244,
+	"utf8mb4_croatian_ci":      245,
+	"utf8mb4_unicode_520_ci":   246,
+	"utf8mb4_vietnamese_ci":    247,
+	"gb18030_chinese_ci":       248,
+	"gb18030_bin":              249,
+	"gb18030_unicode_520_ci":   250,
+	"utf8mb4_0900_ai_ci":       255,
+}
+
+// A denylist of collations which is unsafe to interpolate parameters.
+// These multibyte encodings may contains 0x5c (`\`) in their trailing bytes.
+var unsafeCollations = map[string]bool{
+	"big5_chinese_ci":        true,
+	"sjis_japanese_ci":       true,
+	"gbk_chinese_ci":         true,
+	"big5_bin":               true,
+	"gb2312_bin":             true,
+	"gbk_bin":                true,
+	"sjis_bin":               true,
+	"cp932_japanese_ci":      true,
+	"cp932_bin":              true,
+	"gb18030_chinese_ci":     true,
+	"gb18030_bin":            true,
+	"gb18030_unicode_520_ci": true,
+}

vendor/github.com/go-sql-driver/mysql/conncheck.go

@@ -0,0 +1,55 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2019 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+//go:build linux || darwin || dragonfly || freebsd || netbsd || openbsd || solaris || illumos
+// +build linux darwin dragonfly freebsd netbsd openbsd solaris illumos
+
+package mysql
+
+import (
+	"errors"
+	"io"
+	"net"
+	"syscall"
+)
+
+var errUnexpectedRead = errors.New("unexpected read from socket")
+
+func connCheck(conn net.Conn) error {
+	var sysErr error
+
+	sysConn, ok := conn.(syscall.Conn)
+	if !ok {
+		return nil
+	}
+	rawConn, err := sysConn.SyscallConn()
+	if err != nil {
+		return err
+	}
+
+	err = rawConn.Read(func(fd uintptr) bool {
+		var buf [1]byte
+		n, err := syscall.Read(int(fd), buf[:])
+		switch {
+		case n == 0 && err == nil:
+			sysErr = io.EOF
+		case n > 0:
+			sysErr = errUnexpectedRead
+		case err == syscall.EAGAIN || err == syscall.EWOULDBLOCK:
+			sysErr = nil
+		default:
+			sysErr = err
+		}
+		return true
+	})
+	if err != nil {
+		return err
+	}
+
+	return sysErr
+}

vendor/github.com/go-sql-driver/mysql/conncheck_dummy.go

@@ -0,0 +1,18 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2019 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+//go:build !linux && !darwin && !dragonfly && !freebsd && !netbsd && !openbsd && !solaris && !illumos
+// +build !linux,!darwin,!dragonfly,!freebsd,!netbsd,!openbsd,!solaris,!illumos
+
+package mysql
+
+import "net"
+
+func connCheck(conn net.Conn) error {
+	return nil
+}

vendor/github.com/go-sql-driver/mysql/connection.go

@@ -0,0 +1,688 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"encoding/json"
+	"io"
+	"net"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type mysqlConn struct {
+	buf              buffer
+	netConn          net.Conn
+	rawConn          net.Conn    // underlying connection when netConn is TLS connection.
+	result           mysqlResult // managed by clearResult() and handleOkPacket().
+	cfg              *Config
+	connector        *connector
+	maxAllowedPacket int
+	maxWriteSize     int
+	writeTimeout     time.Duration
+	flags            clientFlag
+	status           statusFlag
+	sequence         uint8
+	parseTime        bool
+
+	// for context support (Go 1.8+)
+	watching bool
+	watcher  chan<- context.Context
+	closech  chan struct{}
+	finished chan<- struct{}
+	canceled atomicError // set non-nil if conn is canceled
+	closed   atomicBool  // set when conn is closed, before closech is closed
+}
+
+// Helper function to call per-connection logger.
+func (mc *mysqlConn) log(v ...any) {
+	mc.cfg.Logger.Print(v...)
+}
+
+// Handles parameters set in DSN after the connection is established
+func (mc *mysqlConn) handleParams() (err error) {
+	var cmdSet strings.Builder
+
+	for param, val := range mc.cfg.Params {
+		switch param {
+		// Charset: character_set_connection, character_set_client, character_set_results
+		case "charset":
+			charsets := strings.Split(val, ",")
+			for _, cs := range charsets {
+				// ignore errors here - a charset may not exist
+				if mc.cfg.Collation != "" {
+					err = mc.exec("SET NAMES " + cs + " COLLATE " + mc.cfg.Collation)
+				} else {
+					err = mc.exec("SET NAMES " + cs)
+				}
+				if err == nil {
+					break
+				}
+			}
+			if err != nil {
+				return
+			}
+
+		// Other system vars accumulated in a single SET command
+		default:
+			if cmdSet.Len() == 0 {
+				// Heuristic: 29 chars for each other key=value to reduce reallocations
+				cmdSet.Grow(4 + len(param) + 3 + len(val) + 30*(len(mc.cfg.Params)-1))
+				cmdSet.WriteString("SET ")
+			} else {
+				cmdSet.WriteString(", ")
+			}
+			cmdSet.WriteString(param)
+			cmdSet.WriteString(" = ")
+			cmdSet.WriteString(val)
+		}
+	}
+
+	if cmdSet.Len() > 0 {
+		err = mc.exec(cmdSet.String())
+		if err != nil {
+			return
+		}
+	}
+
+	return
+}
+
+func (mc *mysqlConn) markBadConn(err error) error {
+	if mc == nil {
+		return err
+	}
+	if err != errBadConnNoWrite {
+		return err
+	}
+	return driver.ErrBadConn
+}
+
+func (mc *mysqlConn) Begin() (driver.Tx, error) {
+	return mc.begin(false)
+}
+
+func (mc *mysqlConn) begin(readOnly bool) (driver.Tx, error) {
+	if mc.closed.Load() {
+		mc.log(ErrInvalidConn)
+		return nil, driver.ErrBadConn
+	}
+	var q string
+	if readOnly {
+		q = "START TRANSACTION READ ONLY"
+	} else {
+		q = "START TRANSACTION"
+	}
+	err := mc.exec(q)
+	if err == nil {
+		return &mysqlTx{mc}, err
+	}
+	return nil, mc.markBadConn(err)
+}
+
+func (mc *mysqlConn) Close() (err error) {
+	// Makes Close idempotent
+	if !mc.closed.Load() {
+		err = mc.writeCommandPacket(comQuit)
+	}
+
+	mc.cleanup()
+	mc.clearResult()
+	return
+}
+
+// Closes the network connection and unsets internal variables. Do not call this
+// function after successfully authentication, call Close instead. This function
+// is called before auth or on auth failure because MySQL will have already
+// closed the network connection.
+func (mc *mysqlConn) cleanup() {
+	if mc.closed.Swap(true) {
+		return
+	}
+
+	// Makes cleanup idempotent
+	close(mc.closech)
+	conn := mc.rawConn
+	if conn == nil {
+		return
+	}
+	if err := conn.Close(); err != nil {
+		mc.log(err)
+	}
+	// This function can be called from multiple goroutines.
+	// So we can not mc.clearResult() here.
+	// Caller should do it if they are in safe goroutine.
+}
+
+func (mc *mysqlConn) error() error {
+	if mc.closed.Load() {
+		if err := mc.canceled.Value(); err != nil {
+			return err
+		}
+		return ErrInvalidConn
+	}
+	return nil
+}
+
+func (mc *mysqlConn) Prepare(query string) (driver.Stmt, error) {
+	if mc.closed.Load() {
+		mc.log(ErrInvalidConn)
+		return nil, driver.ErrBadConn
+	}
+	// Send command
+	err := mc.writeCommandPacketStr(comStmtPrepare, query)
+	if err != nil {
+		// STMT_PREPARE is safe to retry.  So we can return ErrBadConn here.
+		mc.log(err)
+		return nil, driver.ErrBadConn
+	}
+
+	stmt := &mysqlStmt{
+		mc: mc,
+	}
+
+	// Read Result
+	columnCount, err := stmt.readPrepareResultPacket()
+	if err == nil {
+		if stmt.paramCount > 0 {
+			if err = mc.readUntilEOF(); err != nil {
+				return nil, err
+			}
+		}
+
+		if columnCount > 0 {
+			err = mc.readUntilEOF()
+		}
+	}
+
+	return stmt, err
+}
+
+func (mc *mysqlConn) interpolateParams(query string, args []driver.Value) (string, error) {
+	// Number of ? should be same to len(args)
+	if strings.Count(query, "?") != len(args) {
+		return "", driver.ErrSkip
+	}
+
+	buf, err := mc.buf.takeCompleteBuffer()
+	if err != nil {
+		// can not take the buffer. Something must be wrong with the connection
+		mc.log(err)
+		return "", ErrInvalidConn
+	}
+	buf = buf[:0]
+	argPos := 0
+
+	for i := 0; i < len(query); i++ {
+		q := strings.IndexByte(query[i:], '?')
+		if q == -1 {
+			buf = append(buf, query[i:]...)
+			break
+		}
+		buf = append(buf, query[i:i+q]...)
+		i += q
+
+		arg := args[argPos]
+		argPos++
+
+		if arg == nil {
+			buf = append(buf, "NULL"...)
+			continue
+		}
+
+		switch v := arg.(type) {
+		case int64:
+			buf = strconv.AppendInt(buf, v, 10)
+		case uint64:
+			// Handle uint64 explicitly because our custom ConvertValue emits unsigned values
+			buf = strconv.AppendUint(buf, v, 10)
+		case float64:
+			buf = strconv.AppendFloat(buf, v, 'g', -1, 64)
+		case bool:
+			if v {
+				buf = append(buf, '1')
+			} else {
+				buf = append(buf, '0')
+			}
+		case time.Time:
+			if v.IsZero() {
+				buf = append(buf, "'0000-00-00'"...)
+			} else {
+				buf = append(buf, '\'')
+				buf, err = appendDateTime(buf, v.In(mc.cfg.Loc), mc.cfg.timeTruncate)
+				if err != nil {
+					return "", err
+				}
+				buf = append(buf, '\'')
+			}
+		case json.RawMessage:
+			buf = append(buf, '\'')
+			if mc.status&statusNoBackslashEscapes == 0 {
+				buf = escapeBytesBackslash(buf, v)
+			} else {
+				buf = escapeBytesQuotes(buf, v)
+			}
+			buf = append(buf, '\'')
+		case []byte:
+			if v == nil {
+				buf = append(buf, "NULL"...)
+			} else {
+				buf = append(buf, "_binary'"...)
+				if mc.status&statusNoBackslashEscapes == 0 {
+					buf = escapeBytesBackslash(buf, v)
+				} else {
+					buf = escapeBytesQuotes(buf, v)
+				}
+				buf = append(buf, '\'')
+			}
+		case string:
+			buf = append(buf, '\'')
+			if mc.status&statusNoBackslashEscapes == 0 {
+				buf = escapeStringBackslash(buf, v)
+			} else {
+				buf = escapeStringQuotes(buf, v)
+			}
+			buf = append(buf, '\'')
+		default:
+			return "", driver.ErrSkip
+		}
+
+		if len(buf)+4 > mc.maxAllowedPacket {
+			return "", driver.ErrSkip
+		}
+	}
+	if argPos != len(args) {
+		return "", driver.ErrSkip
+	}
+	return string(buf), nil
+}
+
+func (mc *mysqlConn) Exec(query string, args []driver.Value) (driver.Result, error) {
+	if mc.closed.Load() {
+		mc.log(ErrInvalidConn)
+		return nil, driver.ErrBadConn
+	}
+	if len(args) != 0 {
+		if !mc.cfg.InterpolateParams {
+			return nil, driver.ErrSkip
+		}
+		// try to interpolate the parameters to save extra roundtrips for preparing and closing a statement
+		prepared, err := mc.interpolateParams(query, args)
+		if err != nil {
+			return nil, err
+		}
+		query = prepared
+	}
+
+	err := mc.exec(query)
+	if err == nil {
+		copied := mc.result
+		return &copied, err
+	}
+	return nil, mc.markBadConn(err)
+}
+
+// Internal function to execute commands
+func (mc *mysqlConn) exec(query string) error {
+	handleOk := mc.clearResult()
+	// Send command
+	if err := mc.writeCommandPacketStr(comQuery, query); err != nil {
+		return mc.markBadConn(err)
+	}
+
+	// Read Result
+	resLen, err := handleOk.readResultSetHeaderPacket()
+	if err != nil {
+		return err
+	}
+
+	if resLen > 0 {
+		// columns
+		if err := mc.readUntilEOF(); err != nil {
+			return err
+		}
+
+		// rows
+		if err := mc.readUntilEOF(); err != nil {
+			return err
+		}
+	}
+
+	return handleOk.discardResults()
+}
+
+func (mc *mysqlConn) Query(query string, args []driver.Value) (driver.Rows, error) {
+	return mc.query(query, args)
+}
+
+func (mc *mysqlConn) query(query string, args []driver.Value) (*textRows, error) {
+	handleOk := mc.clearResult()
+
+	if mc.closed.Load() {
+		mc.log(ErrInvalidConn)
+		return nil, driver.ErrBadConn
+	}
+	if len(args) != 0 {
+		if !mc.cfg.InterpolateParams {
+			return nil, driver.ErrSkip
+		}
+		// try client-side prepare to reduce roundtrip
+		prepared, err := mc.interpolateParams(query, args)
+		if err != nil {
+			return nil, err
+		}
+		query = prepared
+	}
+	// Send command
+	err := mc.writeCommandPacketStr(comQuery, query)
+	if err == nil {
+		// Read Result
+		var resLen int
+		resLen, err = handleOk.readResultSetHeaderPacket()
+		if err == nil {
+			rows := new(textRows)
+			rows.mc = mc
+
+			if resLen == 0 {
+				rows.rs.done = true
+
+				switch err := rows.NextResultSet(); err {
+				case nil, io.EOF:
+					return rows, nil
+				default:
+					return nil, err
+				}
+			}
+
+			// Columns
+			rows.rs.columns, err = mc.readColumns(resLen)
+			return rows, err
+		}
+	}
+	return nil, mc.markBadConn(err)
+}
+
+// Gets the value of the given MySQL System Variable
+// The returned byte slice is only valid until the next read
+func (mc *mysqlConn) getSystemVar(name string) ([]byte, error) {
+	// Send command
+	handleOk := mc.clearResult()
+	if err := mc.writeCommandPacketStr(comQuery, "SELECT @@"+name); err != nil {
+		return nil, err
+	}
+
+	// Read Result
+	resLen, err := handleOk.readResultSetHeaderPacket()
+	if err == nil {
+		rows := new(textRows)
+		rows.mc = mc
+		rows.rs.columns = []mysqlField{{fieldType: fieldTypeVarChar}}
+
+		if resLen > 0 {
+			// Columns
+			if err := mc.readUntilEOF(); err != nil {
+				return nil, err
+			}
+		}
+
+		dest := make([]driver.Value, resLen)
+		if err = rows.readRow(dest); err == nil {
+			return dest[0].([]byte), mc.readUntilEOF()
+		}
+	}
+	return nil, err
+}
+
+// finish is called when the query has canceled.
+func (mc *mysqlConn) cancel(err error) {
+	mc.canceled.Set(err)
+	mc.cleanup()
+}
+
+// finish is called when the query has succeeded.
+func (mc *mysqlConn) finish() {
+	if !mc.watching || mc.finished == nil {
+		return
+	}
+	select {
+	case mc.finished <- struct{}{}:
+		mc.watching = false
+	case <-mc.closech:
+	}
+}
+
+// Ping implements driver.Pinger interface
+func (mc *mysqlConn) Ping(ctx context.Context) (err error) {
+	if mc.closed.Load() {
+		mc.log(ErrInvalidConn)
+		return driver.ErrBadConn
+	}
+
+	if err = mc.watchCancel(ctx); err != nil {
+		return
+	}
+	defer mc.finish()
+
+	handleOk := mc.clearResult()
+	if err = mc.writeCommandPacket(comPing); err != nil {
+		return mc.markBadConn(err)
+	}
+
+	return handleOk.readResultOK()
+}
+
+// BeginTx implements driver.ConnBeginTx interface
+func (mc *mysqlConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
+	if mc.closed.Load() {
+		return nil, driver.ErrBadConn
+	}
+
+	if err := mc.watchCancel(ctx); err != nil {
+		return nil, err
+	}
+	defer mc.finish()
+
+	if sql.IsolationLevel(opts.Isolation) != sql.LevelDefault {
+		level, err := mapIsolationLevel(opts.Isolation)
+		if err != nil {
+			return nil, err
+		}
+		err = mc.exec("SET TRANSACTION ISOLATION LEVEL " + level)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return mc.begin(opts.ReadOnly)
+}
+
+func (mc *mysqlConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
+	dargs, err := namedValueToValue(args)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := mc.watchCancel(ctx); err != nil {
+		return nil, err
+	}
+
+	rows, err := mc.query(query, dargs)
+	if err != nil {
+		mc.finish()
+		return nil, err
+	}
+	rows.finish = mc.finish
+	return rows, err
+}
+
+func (mc *mysqlConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
+	dargs, err := namedValueToValue(args)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := mc.watchCancel(ctx); err != nil {
+		return nil, err
+	}
+	defer mc.finish()
+
+	return mc.Exec(query, dargs)
+}
+
+func (mc *mysqlConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
+	if err := mc.watchCancel(ctx); err != nil {
+		return nil, err
+	}
+
+	stmt, err := mc.Prepare(query)
+	mc.finish()
+	if err != nil {
+		return nil, err
+	}
+
+	select {
+	default:
+	case <-ctx.Done():
+		stmt.Close()
+		return nil, ctx.Err()
+	}
+	return stmt, nil
+}
+
+func (stmt *mysqlStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
+	dargs, err := namedValueToValue(args)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := stmt.mc.watchCancel(ctx); err != nil {
+		return nil, err
+	}
+
+	rows, err := stmt.query(dargs)
+	if err != nil {
+		stmt.mc.finish()
+		return nil, err
+	}
+	rows.finish = stmt.mc.finish
+	return rows, err
+}
+
+func (stmt *mysqlStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) {
+	dargs, err := namedValueToValue(args)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := stmt.mc.watchCancel(ctx); err != nil {
+		return nil, err
+	}
+	defer stmt.mc.finish()
+
+	return stmt.Exec(dargs)
+}
+
+func (mc *mysqlConn) watchCancel(ctx context.Context) error {
+	if mc.watching {
+		// Reach here if canceled,
+		// so the connection is already invalid
+		mc.cleanup()
+		return nil
+	}
+	// When ctx is already cancelled, don't watch it.
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+	// When ctx is not cancellable, don't watch it.
+	if ctx.Done() == nil {
+		return nil
+	}
+	// When watcher is not alive, can't watch it.
+	if mc.watcher == nil {
+		return nil
+	}
+
+	mc.watching = true
+	mc.watcher <- ctx
+	return nil
+}
+
+func (mc *mysqlConn) startWatcher() {
+	watcher := make(chan context.Context, 1)
+	mc.watcher = watcher
+	finished := make(chan struct{})
+	mc.finished = finished
+	go func() {
+		for {
+			var ctx context.Context
+			select {
+			case ctx = <-watcher:
+			case <-mc.closech:
+				return
+			}
+
+			select {
+			case <-ctx.Done():
+				mc.cancel(ctx.Err())
+			case <-finished:
+			case <-mc.closech:
+				return
+			}
+		}
+	}()
+}
+
+func (mc *mysqlConn) CheckNamedValue(nv *driver.NamedValue) (err error) {
+	nv.Value, err = converter{}.ConvertValue(nv.Value)
+	return
+}
+
+// ResetSession implements driver.SessionResetter.
+// (From Go 1.10)
+func (mc *mysqlConn) ResetSession(ctx context.Context) error {
+	if mc.closed.Load() {
+		return driver.ErrBadConn
+	}
+
+	// Perform a stale connection check. We only perform this check for
+	// the first query on a connection that has been checked out of the
+	// connection pool: a fresh connection from the pool is more likely
+	// to be stale, and it has not performed any previous writes that
+	// could cause data corruption, so it's safe to return ErrBadConn
+	// if the check fails.
+	if mc.cfg.CheckConnLiveness {
+		conn := mc.netConn
+		if mc.rawConn != nil {
+			conn = mc.rawConn
+		}
+		var err error
+		if mc.cfg.ReadTimeout != 0 {
+			err = conn.SetReadDeadline(time.Now().Add(mc.cfg.ReadTimeout))
+		}
+		if err == nil {
+			err = connCheck(conn)
+		}
+		if err != nil {
+			mc.log("closing bad idle connection: ", err)
+			return driver.ErrBadConn
+		}
+	}
+
+	return nil
+}
+
+// IsValid implements driver.Validator interface
+// (From Go 1.15)
+func (mc *mysqlConn) IsValid() bool {
+	return !mc.closed.Load()
+}

vendor/github.com/go-sql-driver/mysql/connector.go

@@ -0,0 +1,197 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2018 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"context"
+	"database/sql/driver"
+	"net"
+	"os"
+	"strconv"
+	"strings"
+)
+
+type connector struct {
+	cfg               *Config // immutable private copy.
+	encodedAttributes string  // Encoded connection attributes.
+}
+
+func encodeConnectionAttributes(cfg *Config) string {
+	connAttrsBuf := make([]byte, 0)
+
+	// default connection attributes
+	connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrClientName)
+	connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrClientNameValue)
+	connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrOS)
+	connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrOSValue)
+	connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrPlatform)
+	connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrPlatformValue)
+	connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrPid)
+	connAttrsBuf = appendLengthEncodedString(connAttrsBuf, strconv.Itoa(os.Getpid()))
+	serverHost, _, _ := net.SplitHostPort(cfg.Addr)
+	if serverHost != "" {
+		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrServerHost)
+		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, serverHost)
+	}
+
+	// user-defined connection attributes
+	for _, connAttr := range strings.Split(cfg.ConnectionAttributes, ",") {
+		k, v, found := strings.Cut(connAttr, ":")
+		if !found {
+			continue
+		}
+		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, k)
+		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, v)
+	}
+
+	return string(connAttrsBuf)
+}
+
+func newConnector(cfg *Config) *connector {
+	encodedAttributes := encodeConnectionAttributes(cfg)
+	return &connector{
+		cfg:               cfg,
+		encodedAttributes: encodedAttributes,
+	}
+}
+
+// Connect implements driver.Connector interface.
+// Connect returns a connection to the database.
+func (c *connector) Connect(ctx context.Context) (driver.Conn, error) {
+	var err error
+
+	// Invoke beforeConnect if present, with a copy of the configuration
+	cfg := c.cfg
+	if c.cfg.beforeConnect != nil {
+		cfg = c.cfg.Clone()
+		err = c.cfg.beforeConnect(ctx, cfg)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// New mysqlConn
+	mc := &mysqlConn{
+		maxAllowedPacket: maxPacketSize,
+		maxWriteSize:     maxPacketSize - 1,
+		closech:          make(chan struct{}),
+		cfg:              cfg,
+		connector:        c,
+	}
+	mc.parseTime = mc.cfg.ParseTime
+
+	// Connect to Server
+	dialsLock.RLock()
+	dial, ok := dials[mc.cfg.Net]
+	dialsLock.RUnlock()
+	if ok {
+		dctx := ctx
+		if mc.cfg.Timeout > 0 {
+			var cancel context.CancelFunc
+			dctx, cancel = context.WithTimeout(ctx, c.cfg.Timeout)
+			defer cancel()
+		}
+		mc.netConn, err = dial(dctx, mc.cfg.Addr)
+	} else {
+		nd := net.Dialer{Timeout: mc.cfg.Timeout}
+		mc.netConn, err = nd.DialContext(ctx, mc.cfg.Net, mc.cfg.Addr)
+	}
+	if err != nil {
+		return nil, err
+	}
+	mc.rawConn = mc.netConn
+
+	// Enable TCP Keepalives on TCP connections
+	if tc, ok := mc.netConn.(*net.TCPConn); ok {
+		if err := tc.SetKeepAlive(true); err != nil {
+			c.cfg.Logger.Print(err)
+		}
+	}
+
+	// Call startWatcher for context support (From Go 1.8)
+	mc.startWatcher()
+	if err := mc.watchCancel(ctx); err != nil {
+		mc.cleanup()
+		return nil, err
+	}
+	defer mc.finish()
+
+	mc.buf = newBuffer(mc.netConn)
+
+	// Set I/O timeouts
+	mc.buf.timeout = mc.cfg.ReadTimeout
+	mc.writeTimeout = mc.cfg.WriteTimeout
+
+	// Reading Handshake Initialization Packet
+	authData, plugin, err := mc.readHandshakePacket()
+	if err != nil {
+		mc.cleanup()
+		return nil, err
+	}
+
+	if plugin == "" {
+		plugin = defaultAuthPlugin
+	}
+
+	// Send Client Authentication Packet
+	authResp, err := mc.auth(authData, plugin)
+	if err != nil {
+		// try the default auth plugin, if using the requested plugin failed
+		c.cfg.Logger.Print("could not use requested auth plugin '"+plugin+"': ", err.Error())
+		plugin = defaultAuthPlugin
+		authResp, err = mc.auth(authData, plugin)
+		if err != nil {
+			mc.cleanup()
+			return nil, err
+		}
+	}
+	if err = mc.writeHandshakeResponsePacket(authResp, plugin); err != nil {
+		mc.cleanup()
+		return nil, err
+	}
+
+	// Handle response to auth packet, switch methods if possible
+	if err = mc.handleAuthResult(authData, plugin); err != nil {
+		// Authentication failed and MySQL has already closed the connection
+		// (https://dev.mysql.com/doc/internals/en/authentication-fails.html).
+		// Do not send COM_QUIT, just cleanup and return the error.
+		mc.cleanup()
+		return nil, err
+	}
+
+	if mc.cfg.MaxAllowedPacket > 0 {
+		mc.maxAllowedPacket = mc.cfg.MaxAllowedPacket
+	} else {
+		// Get max allowed packet size
+		maxap, err := mc.getSystemVar("max_allowed_packet")
+		if err != nil {
+			mc.Close()
+			return nil, err
+		}
+		mc.maxAllowedPacket = stringToInt(maxap) - 1
+	}
+	if mc.maxAllowedPacket < maxPacketSize {
+		mc.maxWriteSize = mc.maxAllowedPacket
+	}
+
+	// Handle DSN Params
+	err = mc.handleParams()
+	if err != nil {
+		mc.Close()
+		return nil, err
+	}
+
+	return mc, nil
+}
+
+// Driver implements driver.Connector interface.
+// Driver returns &MySQLDriver{}.
+func (c *connector) Driver() driver.Driver {
+	return &MySQLDriver{}
+}

vendor/github.com/go-sql-driver/mysql/const.go

@@ -0,0 +1,187 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import "runtime"
+
+const (
+	defaultAuthPlugin       = "mysql_native_password"
+	defaultMaxAllowedPacket = 64 << 20 // 64 MiB. See https://github.com/go-sql-driver/mysql/issues/1355
+	minProtocolVersion      = 10
+	maxPacketSize           = 1<<24 - 1
+	timeFormat              = "2006-01-02 15:04:05.999999"
+
+	// Connection attributes
+	// See https://dev.mysql.com/doc/refman/8.0/en/performance-schema-connection-attribute-tables.html#performance-schema-connection-attributes-available
+	connAttrClientName      = "_client_name"
+	connAttrClientNameValue = "Go-MySQL-Driver"
+	connAttrOS              = "_os"
+	connAttrOSValue         = runtime.GOOS
+	connAttrPlatform        = "_platform"
+	connAttrPlatformValue   = runtime.GOARCH
+	connAttrPid             = "_pid"
+	connAttrServerHost      = "_server_host"
+)
+
+// MySQL constants documentation:
+// http://dev.mysql.com/doc/internals/en/client-server-protocol.html
+
+const (
+	iOK           byte = 0x00
+	iAuthMoreData byte = 0x01
+	iLocalInFile  byte = 0xfb
+	iEOF          byte = 0xfe
+	iERR          byte = 0xff
+)
+
+// https://dev.mysql.com/doc/internals/en/capability-flags.html#packet-Protocol::CapabilityFlags
+type clientFlag uint32
+
+const (
+	clientLongPassword clientFlag = 1 << iota
+	clientFoundRows
+	clientLongFlag
+	clientConnectWithDB
+	clientNoSchema
+	clientCompress
+	clientODBC
+	clientLocalFiles
+	clientIgnoreSpace
+	clientProtocol41
+	clientInteractive
+	clientSSL
+	clientIgnoreSIGPIPE
+	clientTransactions
+	clientReserved
+	clientSecureConn
+	clientMultiStatements
+	clientMultiResults
+	clientPSMultiResults
+	clientPluginAuth
+	clientConnectAttrs
+	clientPluginAuthLenEncClientData
+	clientCanHandleExpiredPasswords
+	clientSessionTrack
+	clientDeprecateEOF
+)
+
+const (
+	comQuit byte = iota + 1
+	comInitDB
+	comQuery
+	comFieldList
+	comCreateDB
+	comDropDB
+	comRefresh
+	comShutdown
+	comStatistics
+	comProcessInfo
+	comConnect
+	comProcessKill
+	comDebug
+	comPing
+	comTime
+	comDelayedInsert
+	comChangeUser
+	comBinlogDump
+	comTableDump
+	comConnectOut
+	comRegisterSlave
+	comStmtPrepare
+	comStmtExecute
+	comStmtSendLongData
+	comStmtClose
+	comStmtReset
+	comSetOption
+	comStmtFetch
+)
+
+// https://dev.mysql.com/doc/internals/en/com-query-response.html#packet-Protocol::ColumnType
+type fieldType byte
+
+const (
+	fieldTypeDecimal fieldType = iota
+	fieldTypeTiny
+	fieldTypeShort
+	fieldTypeLong
+	fieldTypeFloat
+	fieldTypeDouble
+	fieldTypeNULL
+	fieldTypeTimestamp
+	fieldTypeLongLong
+	fieldTypeInt24
+	fieldTypeDate
+	fieldTypeTime
+	fieldTypeDateTime
+	fieldTypeYear
+	fieldTypeNewDate
+	fieldTypeVarChar
+	fieldTypeBit
+)
+const (
+	fieldTypeJSON fieldType = iota + 0xf5
+	fieldTypeNewDecimal
+	fieldTypeEnum
+	fieldTypeSet
+	fieldTypeTinyBLOB
+	fieldTypeMediumBLOB
+	fieldTypeLongBLOB
+	fieldTypeBLOB
+	fieldTypeVarString
+	fieldTypeString
+	fieldTypeGeometry
+)
+
+type fieldFlag uint16
+
+const (
+	flagNotNULL fieldFlag = 1 << iota
+	flagPriKey
+	flagUniqueKey
+	flagMultipleKey
+	flagBLOB
+	flagUnsigned
+	flagZeroFill
+	flagBinary
+	flagEnum
+	flagAutoIncrement
+	flagTimestamp
+	flagSet
+	flagUnknown1
+	flagUnknown2
+	flagUnknown3
+	flagUnknown4
+)
+
+// http://dev.mysql.com/doc/internals/en/status-flags.html
+type statusFlag uint16
+
+const (
+	statusInTrans statusFlag = 1 << iota
+	statusInAutocommit
+	statusReserved // Not in documentation
+	statusMoreResultsExists
+	statusNoGoodIndexUsed
+	statusNoIndexUsed
+	statusCursorExists
+	statusLastRowSent
+	statusDbDropped
+	statusNoBackslashEscapes
+	statusMetadataChanged
+	statusQueryWasSlow
+	statusPsOutParams
+	statusInTransReadonly
+	statusSessionStateChanged
+)
+
+const (
+	cachingSha2PasswordRequestPublicKey          = 2
+	cachingSha2PasswordFastAuthSuccess           = 3
+	cachingSha2PasswordPerformFullAuthentication = 4
+)

vendor/github.com/go-sql-driver/mysql/driver.go

@@ -0,0 +1,118 @@
+// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// Package mysql provides a MySQL driver for Go's database/sql package.
+//
+// The driver should be used via the database/sql package:
+//
+//	import "database/sql"
+//	import _ "github.com/go-sql-driver/mysql"
+//
+//	db, err := sql.Open("mysql", "user:password@/dbname")
+//
+// See https://github.com/go-sql-driver/mysql#usage for details
+package mysql
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"net"
+	"sync"
+)
+
+// MySQLDriver is exported to make the driver directly accessible.
+// In general the driver is used via the database/sql package.
+type MySQLDriver struct{}
+
+// DialFunc is a function which can be used to establish the network connection.
+// Custom dial functions must be registered with RegisterDial
+//
+// Deprecated: users should register a DialContextFunc instead
+type DialFunc func(addr string) (net.Conn, error)
+
+// DialContextFunc is a function which can be used to establish the network connection.
+// Custom dial functions must be registered with RegisterDialContext
+type DialContextFunc func(ctx context.Context, addr string) (net.Conn, error)
+
+var (
+	dialsLock sync.RWMutex
+	dials     map[string]DialContextFunc
+)
+
+// RegisterDialContext registers a custom dial function. It can then be used by the
+// network address mynet(addr), where mynet is the registered new network.
+// The current context for the connection and its address is passed to the dial function.
+func RegisterDialContext(net string, dial DialContextFunc) {
+	dialsLock.Lock()
+	defer dialsLock.Unlock()
+	if dials == nil {
+		dials = make(map[string]DialContextFunc)
+	}
+	dials[net] = dial
+}
+
+// DeregisterDialContext removes the custom dial function registered with the given net.
+func DeregisterDialContext(net string) {
+	dialsLock.Lock()
+	defer dialsLock.Unlock()
+	if dials != nil {
+		delete(dials, net)
+	}
+}
+
+// RegisterDial registers a custom dial function. It can then be used by the
+// network address mynet(addr), where mynet is the registered new network.
+// addr is passed as a parameter to the dial function.
+//
+// Deprecated: users should call RegisterDialContext instead
+func RegisterDial(network string, dial DialFunc) {
+	RegisterDialContext(network, func(_ context.Context, addr string) (net.Conn, error) {
+		return dial(addr)
+	})
+}
+
+// Open new Connection.
+// See https://github.com/go-sql-driver/mysql#dsn-data-source-name for how
+// the DSN string is formatted
+func (d MySQLDriver) Open(dsn string) (driver.Conn, error) {
+	cfg, err := ParseDSN(dsn)
+	if err != nil {
+		return nil, err
+	}
+	c := newConnector(cfg)
+	return c.Connect(context.Background())
+}
+
+// This variable can be replaced with -ldflags like below:
+// go build "-ldflags=-X github.com/go-sql-driver/mysql.driverName=custom"
+var driverName = "mysql"
+
+func init() {
+	if driverName != "" {
+		sql.Register(driverName, &MySQLDriver{})
+	}
+}
+
+// NewConnector returns new driver.Connector.
+func NewConnector(cfg *Config) (driver.Connector, error) {
+	cfg = cfg.Clone()
+	// normalize the contents of cfg so calls to NewConnector have the same
+	// behavior as MySQLDriver.OpenConnector
+	if err := cfg.normalize(); err != nil {
+		return nil, err
+	}
+	return newConnector(cfg), nil
+}
+
+// OpenConnector implements driver.DriverContext.
+func (d MySQLDriver) OpenConnector(dsn string) (driver.Connector, error) {
+	cfg, err := ParseDSN(dsn)
+	if err != nil {
+		return nil, err
+	}
+	return newConnector(cfg), nil
+}

vendor/github.com/go-sql-driver/mysql/dsn.go

@@ -0,0 +1,653 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2016 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"bytes"
+	"context"
+	"crypto/rsa"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"math/big"
+	"net"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var (
+	errInvalidDSNUnescaped       = errors.New("invalid DSN: did you forget to escape a param value?")
+	errInvalidDSNAddr            = errors.New("invalid DSN: network address not terminated (missing closing brace)")
+	errInvalidDSNNoSlash         = errors.New("invalid DSN: missing the slash separating the database name")
+	errInvalidDSNUnsafeCollation = errors.New("invalid DSN: interpolateParams can not be used with unsafe collations")
+)
+
+// Config is a configuration parsed from a DSN string.
+// If a new Config is created instead of being parsed from a DSN string,
+// the NewConfig function should be used, which sets default values.
+type Config struct {
+	// non boolean fields
+
+	User                 string            // Username
+	Passwd               string            // Password (requires User)
+	Net                  string            // Network (e.g. "tcp", "tcp6", "unix". default: "tcp")
+	Addr                 string            // Address (default: "127.0.0.1:3306" for "tcp" and "/tmp/mysql.sock" for "unix")
+	DBName               string            // Database name
+	Params               map[string]string // Connection parameters
+	ConnectionAttributes string            // Connection Attributes, comma-delimited string of user-defined "key:value" pairs
+	Collation            string            // Connection collation
+	Loc                  *time.Location    // Location for time.Time values
+	MaxAllowedPacket     int               // Max packet size allowed
+	ServerPubKey         string            // Server public key name
+	TLSConfig            string            // TLS configuration name
+	TLS                  *tls.Config       // TLS configuration, its priority is higher than TLSConfig
+	Timeout              time.Duration     // Dial timeout
+	ReadTimeout          time.Duration     // I/O read timeout
+	WriteTimeout         time.Duration     // I/O write timeout
+	Logger               Logger            // Logger
+
+	// boolean fields
+
+	AllowAllFiles            bool // Allow all files to be used with LOAD DATA LOCAL INFILE
+	AllowCleartextPasswords  bool // Allows the cleartext client side plugin
+	AllowFallbackToPlaintext bool // Allows fallback to unencrypted connection if server does not support TLS
+	AllowNativePasswords     bool // Allows the native password authentication method
+	AllowOldPasswords        bool // Allows the old insecure password method
+	CheckConnLiveness        bool // Check connections for liveness before using them
+	ClientFoundRows          bool // Return number of matching rows instead of rows changed
+	ColumnsWithAlias         bool // Prepend table alias to column names
+	InterpolateParams        bool // Interpolate placeholders into query string
+	MultiStatements          bool // Allow multiple statements in one query
+	ParseTime                bool // Parse time values to time.Time
+	RejectReadOnly           bool // Reject read-only connections
+
+	// unexported fields. new options should be come here
+
+	beforeConnect func(context.Context, *Config) error // Invoked before a connection is established
+	pubKey        *rsa.PublicKey                       // Server public key
+	timeTruncate  time.Duration                        // Truncate time.Time values to the specified duration
+}
+
+// Functional Options Pattern
+// https://dave.cheney.net/2014/10/17/functional-options-for-friendly-apis
+type Option func(*Config) error
+
+// NewConfig creates a new Config and sets default values.
+func NewConfig() *Config {
+	cfg := &Config{
+		Loc:                  time.UTC,
+		MaxAllowedPacket:     defaultMaxAllowedPacket,
+		Logger:               defaultLogger,
+		AllowNativePasswords: true,
+		CheckConnLiveness:    true,
+	}
+
+	return cfg
+}
+
+// Apply applies the given options to the Config object.
+func (c *Config) Apply(opts ...Option) error {
+	for _, opt := range opts {
+		err := opt(c)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// TimeTruncate sets the time duration to truncate time.Time values in
+// query parameters.
+func TimeTruncate(d time.Duration) Option {
+	return func(cfg *Config) error {
+		cfg.timeTruncate = d
+		return nil
+	}
+}
+
+// BeforeConnect sets the function to be invoked before a connection is established.
+func BeforeConnect(fn func(context.Context, *Config) error) Option {
+	return func(cfg *Config) error {
+		cfg.beforeConnect = fn
+		return nil
+	}
+}
+
+func (cfg *Config) Clone() *Config {
+	cp := *cfg
+	if cp.TLS != nil {
+		cp.TLS = cfg.TLS.Clone()
+	}
+	if len(cp.Params) > 0 {
+		cp.Params = make(map[string]string, len(cfg.Params))
+		for k, v := range cfg.Params {
+			cp.Params[k] = v
+		}
+	}
+	if cfg.pubKey != nil {
+		cp.pubKey = &rsa.PublicKey{
+			N: new(big.Int).Set(cfg.pubKey.N),
+			E: cfg.pubKey.E,
+		}
+	}
+	return &cp
+}
+
+func (cfg *Config) normalize() error {
+	if cfg.InterpolateParams && cfg.Collation != "" && unsafeCollations[cfg.Collation] {
+		return errInvalidDSNUnsafeCollation
+	}
+
+	// Set default network if empty
+	if cfg.Net == "" {
+		cfg.Net = "tcp"
+	}
+
+	// Set default address if empty
+	if cfg.Addr == "" {
+		switch cfg.Net {
+		case "tcp":
+			cfg.Addr = "127.0.0.1:3306"
+		case "unix":
+			cfg.Addr = "/tmp/mysql.sock"
+		default:
+			return errors.New("default addr for network '" + cfg.Net + "' unknown")
+		}
+	} else if cfg.Net == "tcp" {
+		cfg.Addr = ensureHavePort(cfg.Addr)
+	}
+
+	if cfg.TLS == nil {
+		switch cfg.TLSConfig {
+		case "false", "":
+			// don't set anything
+		case "true":
+			cfg.TLS = &tls.Config{}
+		case "skip-verify":
+			cfg.TLS = &tls.Config{InsecureSkipVerify: true}
+		case "preferred":
+			cfg.TLS = &tls.Config{InsecureSkipVerify: true}
+			cfg.AllowFallbackToPlaintext = true
+		default:
+			cfg.TLS = getTLSConfigClone(cfg.TLSConfig)
+			if cfg.TLS == nil {
+				return errors.New("invalid value / unknown config name: " + cfg.TLSConfig)
+			}
+		}
+	}
+
+	if cfg.TLS != nil && cfg.TLS.ServerName == "" && !cfg.TLS.InsecureSkipVerify {
+		host, _, err := net.SplitHostPort(cfg.Addr)
+		if err == nil {
+			cfg.TLS.ServerName = host
+		}
+	}
+
+	if cfg.ServerPubKey != "" {
+		cfg.pubKey = getServerPubKey(cfg.ServerPubKey)
+		if cfg.pubKey == nil {
+			return errors.New("invalid value / unknown server pub key name: " + cfg.ServerPubKey)
+		}
+	}
+
+	if cfg.Logger == nil {
+		cfg.Logger = defaultLogger
+	}
+
+	return nil
+}
+
+func writeDSNParam(buf *bytes.Buffer, hasParam *bool, name, value string) {
+	buf.Grow(1 + len(name) + 1 + len(value))
+	if !*hasParam {
+		*hasParam = true
+		buf.WriteByte('?')
+	} else {
+		buf.WriteByte('&')
+	}
+	buf.WriteString(name)
+	buf.WriteByte('=')
+	buf.WriteString(value)
+}
+
+// FormatDSN formats the given Config into a DSN string which can be passed to
+// the driver.
+//
+// Note: use [NewConnector] and [database/sql.OpenDB] to open a connection from a [*Config].
+func (cfg *Config) FormatDSN() string {
+	var buf bytes.Buffer
+
+	// [username[:password]@]
+	if len(cfg.User) > 0 {
+		buf.WriteString(cfg.User)
+		if len(cfg.Passwd) > 0 {
+			buf.WriteByte(':')
+			buf.WriteString(cfg.Passwd)
+		}
+		buf.WriteByte('@')
+	}
+
+	// [protocol[(address)]]
+	if len(cfg.Net) > 0 {
+		buf.WriteString(cfg.Net)
+		if len(cfg.Addr) > 0 {
+			buf.WriteByte('(')
+			buf.WriteString(cfg.Addr)
+			buf.WriteByte(')')
+		}
+	}
+
+	// /dbname
+	buf.WriteByte('/')
+	buf.WriteString(url.PathEscape(cfg.DBName))
+
+	// [?param1=value1&...&paramN=valueN]
+	hasParam := false
+
+	if cfg.AllowAllFiles {
+		hasParam = true
+		buf.WriteString("?allowAllFiles=true")
+	}
+
+	if cfg.AllowCleartextPasswords {
+		writeDSNParam(&buf, &hasParam, "allowCleartextPasswords", "true")
+	}
+
+	if cfg.AllowFallbackToPlaintext {
+		writeDSNParam(&buf, &hasParam, "allowFallbackToPlaintext", "true")
+	}
+
+	if !cfg.AllowNativePasswords {
+		writeDSNParam(&buf, &hasParam, "allowNativePasswords", "false")
+	}
+
+	if cfg.AllowOldPasswords {
+		writeDSNParam(&buf, &hasParam, "allowOldPasswords", "true")
+	}
+
+	if !cfg.CheckConnLiveness {
+		writeDSNParam(&buf, &hasParam, "checkConnLiveness", "false")
+	}
+
+	if cfg.ClientFoundRows {
+		writeDSNParam(&buf, &hasParam, "clientFoundRows", "true")
+	}
+
+	if col := cfg.Collation; col != "" {
+		writeDSNParam(&buf, &hasParam, "collation", col)
+	}
+
+	if cfg.ColumnsWithAlias {
+		writeDSNParam(&buf, &hasParam, "columnsWithAlias", "true")
+	}
+
+	if cfg.InterpolateParams {
+		writeDSNParam(&buf, &hasParam, "interpolateParams", "true")
+	}
+
+	if cfg.Loc != time.UTC && cfg.Loc != nil {
+		writeDSNParam(&buf, &hasParam, "loc", url.QueryEscape(cfg.Loc.String()))
+	}
+
+	if cfg.MultiStatements {
+		writeDSNParam(&buf, &hasParam, "multiStatements", "true")
+	}
+
+	if cfg.ParseTime {
+		writeDSNParam(&buf, &hasParam, "parseTime", "true")
+	}
+
+	if cfg.timeTruncate > 0 {
+		writeDSNParam(&buf, &hasParam, "timeTruncate", cfg.timeTruncate.String())
+	}
+
+	if cfg.ReadTimeout > 0 {
+		writeDSNParam(&buf, &hasParam, "readTimeout", cfg.ReadTimeout.String())
+	}
+
+	if cfg.RejectReadOnly {
+		writeDSNParam(&buf, &hasParam, "rejectReadOnly", "true")
+	}
+
+	if len(cfg.ServerPubKey) > 0 {
+		writeDSNParam(&buf, &hasParam, "serverPubKey", url.QueryEscape(cfg.ServerPubKey))
+	}
+
+	if cfg.Timeout > 0 {
+		writeDSNParam(&buf, &hasParam, "timeout", cfg.Timeout.String())
+	}
+
+	if len(cfg.TLSConfig) > 0 {
+		writeDSNParam(&buf, &hasParam, "tls", url.QueryEscape(cfg.TLSConfig))
+	}
+
+	if cfg.WriteTimeout > 0 {
+		writeDSNParam(&buf, &hasParam, "writeTimeout", cfg.WriteTimeout.String())
+	}
+
+	if cfg.MaxAllowedPacket != defaultMaxAllowedPacket {
+		writeDSNParam(&buf, &hasParam, "maxAllowedPacket", strconv.Itoa(cfg.MaxAllowedPacket))
+	}
+
+	// other params
+	if cfg.Params != nil {
+		var params []string
+		for param := range cfg.Params {
+			params = append(params, param)
+		}
+		sort.Strings(params)
+		for _, param := range params {
+			writeDSNParam(&buf, &hasParam, param, url.QueryEscape(cfg.Params[param]))
+		}
+	}
+
+	return buf.String()
+}
+
+// ParseDSN parses the DSN string to a Config
+func ParseDSN(dsn string) (cfg *Config, err error) {
+	// New config with some default values
+	cfg = NewConfig()
+
+	// [user[:password]@][net[(addr)]]/dbname[?param1=value1&paramN=valueN]
+	// Find the last '/' (since the password or the net addr might contain a '/')
+	foundSlash := false
+	for i := len(dsn) - 1; i >= 0; i-- {
+		if dsn[i] == '/' {
+			foundSlash = true
+			var j, k int
+
+			// left part is empty if i <= 0
+			if i > 0 {
+				// [username[:password]@][protocol[(address)]]
+				// Find the last '@' in dsn[:i]
+				for j = i; j >= 0; j-- {
+					if dsn[j] == '@' {
+						// username[:password]
+						// Find the first ':' in dsn[:j]
+						for k = 0; k < j; k++ {
+							if dsn[k] == ':' {
+								cfg.Passwd = dsn[k+1 : j]
+								break
+							}
+						}
+						cfg.User = dsn[:k]
+
+						break
+					}
+				}
+
+				// [protocol[(address)]]
+				// Find the first '(' in dsn[j+1:i]
+				for k = j + 1; k < i; k++ {
+					if dsn[k] == '(' {
+						// dsn[i-1] must be == ')' if an address is specified
+						if dsn[i-1] != ')' {
+							if strings.ContainsRune(dsn[k+1:i], ')') {
+								return nil, errInvalidDSNUnescaped
+							}
+							return nil, errInvalidDSNAddr
+						}
+						cfg.Addr = dsn[k+1 : i-1]
+						break
+					}
+				}
+				cfg.Net = dsn[j+1 : k]
+			}
+
+			// dbname[?param1=value1&...&paramN=valueN]
+			// Find the first '?' in dsn[i+1:]
+			for j = i + 1; j < len(dsn); j++ {
+				if dsn[j] == '?' {
+					if err = parseDSNParams(cfg, dsn[j+1:]); err != nil {
+						return
+					}
+					break
+				}
+			}
+
+			dbname := dsn[i+1 : j]
+			if cfg.DBName, err = url.PathUnescape(dbname); err != nil {
+				return nil, fmt.Errorf("invalid dbname %q: %w", dbname, err)
+			}
+
+			break
+		}
+	}
+
+	if !foundSlash && len(dsn) > 0 {
+		return nil, errInvalidDSNNoSlash
+	}
+
+	if err = cfg.normalize(); err != nil {
+		return nil, err
+	}
+	return
+}
+
+// parseDSNParams parses the DSN "query string"
+// Values must be url.QueryEscape'ed
+func parseDSNParams(cfg *Config, params string) (err error) {
+	for _, v := range strings.Split(params, "&") {
+		key, value, found := strings.Cut(v, "=")
+		if !found {
+			continue
+		}
+
+		// cfg params
+		switch key {
+		// Disable INFILE allowlist / enable all files
+		case "allowAllFiles":
+			var isBool bool
+			cfg.AllowAllFiles, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Use cleartext authentication mode (MySQL 5.5.10+)
+		case "allowCleartextPasswords":
+			var isBool bool
+			cfg.AllowCleartextPasswords, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Allow fallback to unencrypted connection if server does not support TLS
+		case "allowFallbackToPlaintext":
+			var isBool bool
+			cfg.AllowFallbackToPlaintext, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Use native password authentication
+		case "allowNativePasswords":
+			var isBool bool
+			cfg.AllowNativePasswords, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Use old authentication mode (pre MySQL 4.1)
+		case "allowOldPasswords":
+			var isBool bool
+			cfg.AllowOldPasswords, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Check connections for Liveness before using them
+		case "checkConnLiveness":
+			var isBool bool
+			cfg.CheckConnLiveness, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Switch "rowsAffected" mode
+		case "clientFoundRows":
+			var isBool bool
+			cfg.ClientFoundRows, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Collation
+		case "collation":
+			cfg.Collation = value
+
+		case "columnsWithAlias":
+			var isBool bool
+			cfg.ColumnsWithAlias, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Compression
+		case "compress":
+			return errors.New("compression not implemented yet")
+
+		// Enable client side placeholder substitution
+		case "interpolateParams":
+			var isBool bool
+			cfg.InterpolateParams, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Time Location
+		case "loc":
+			if value, err = url.QueryUnescape(value); err != nil {
+				return
+			}
+			cfg.Loc, err = time.LoadLocation(value)
+			if err != nil {
+				return
+			}
+
+		// multiple statements in one query
+		case "multiStatements":
+			var isBool bool
+			cfg.MultiStatements, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// time.Time parsing
+		case "parseTime":
+			var isBool bool
+			cfg.ParseTime, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// time.Time truncation
+		case "timeTruncate":
+			cfg.timeTruncate, err = time.ParseDuration(value)
+			if err != nil {
+				return fmt.Errorf("invalid timeTruncate value: %v, error: %w", value, err)
+			}
+
+		// I/O read Timeout
+		case "readTimeout":
+			cfg.ReadTimeout, err = time.ParseDuration(value)
+			if err != nil {
+				return
+			}
+
+		// Reject read-only connections
+		case "rejectReadOnly":
+			var isBool bool
+			cfg.RejectReadOnly, isBool = readBool(value)
+			if !isBool {
+				return errors.New("invalid bool value: " + value)
+			}
+
+		// Server public key
+		case "serverPubKey":
+			name, err := url.QueryUnescape(value)
+			if err != nil {
+				return fmt.Errorf("invalid value for server pub key name: %v", err)
+			}
+			cfg.ServerPubKey = name
+
+		// Strict mode
+		case "strict":
+			panic("strict mode has been removed. See https://github.com/go-sql-driver/mysql/wiki/strict-mode")
+
+		// Dial Timeout
+		case "timeout":
+			cfg.Timeout, err = time.ParseDuration(value)
+			if err != nil {
+				return
+			}
+
+		// TLS-Encryption
+		case "tls":
+			boolValue, isBool := readBool(value)
+			if isBool {
+				if boolValue {
+					cfg.TLSConfig = "true"
+				} else {
+					cfg.TLSConfig = "false"
+				}
+			} else if vl := strings.ToLower(value); vl == "skip-verify" || vl == "preferred" {
+				cfg.TLSConfig = vl
+			} else {
+				name, err := url.QueryUnescape(value)
+				if err != nil {
+					return fmt.Errorf("invalid value for TLS config name: %v", err)
+				}
+				cfg.TLSConfig = name
+			}
+
+		// I/O write Timeout
+		case "writeTimeout":
+			cfg.WriteTimeout, err = time.ParseDuration(value)
+			if err != nil {
+				return
+			}
+		case "maxAllowedPacket":
+			cfg.MaxAllowedPacket, err = strconv.Atoi(value)
+			if err != nil {
+				return
+			}
+
+		// Connection attributes
+		case "connectionAttributes":
+			connectionAttributes, err := url.QueryUnescape(value)
+			if err != nil {
+				return fmt.Errorf("invalid connectionAttributes value: %v", err)
+			}
+			cfg.ConnectionAttributes = connectionAttributes
+
+		default:
+			// lazy init
+			if cfg.Params == nil {
+				cfg.Params = make(map[string]string)
+			}
+
+			if cfg.Params[key], err = url.QueryUnescape(value); err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}
+
+func ensureHavePort(addr string) string {
+	if _, _, err := net.SplitHostPort(addr); err != nil {
+		return net.JoinHostPort(addr, "3306")
+	}
+	return addr
+}

vendor/github.com/go-sql-driver/mysql/errors.go

@@ -0,0 +1,83 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"os"
+)
+
+// Various errors the driver might return. Can change between driver versions.
+var (
+	ErrInvalidConn       = errors.New("invalid connection")
+	ErrMalformPkt        = errors.New("malformed packet")
+	ErrNoTLS             = errors.New("TLS requested but server does not support TLS")
+	ErrCleartextPassword = errors.New("this user requires clear text authentication. If you still want to use it, please add 'allowCleartextPasswords=1' to your DSN")
+	ErrNativePassword    = errors.New("this user requires mysql native password authentication")
+	ErrOldPassword       = errors.New("this user requires old password authentication. If you still want to use it, please add 'allowOldPasswords=1' to your DSN. See also https://github.com/go-sql-driver/mysql/wiki/old_passwords")
+	ErrUnknownPlugin     = errors.New("this authentication plugin is not supported")
+	ErrOldProtocol       = errors.New("MySQL server does not support required protocol 41+")
+	ErrPktSync           = errors.New("commands out of sync. You can't run this command now")
+	ErrPktSyncMul        = errors.New("commands out of sync. Did you run multiple statements at once?")
+	ErrPktTooLarge       = errors.New("packet for query is too large. Try adjusting the `Config.MaxAllowedPacket`")
+	ErrBusyBuffer        = errors.New("busy buffer")
+
+	// errBadConnNoWrite is used for connection errors where nothing was sent to the database yet.
+	// If this happens first in a function starting a database interaction, it should be replaced by driver.ErrBadConn
+	// to trigger a resend.
+	// See https://github.com/go-sql-driver/mysql/pull/302
+	errBadConnNoWrite = errors.New("bad connection")
+)
+
+var defaultLogger = Logger(log.New(os.Stderr, "[mysql] ", log.Ldate|log.Ltime|log.Lshortfile))
+
+// Logger is used to log critical error messages.
+type Logger interface {
+	Print(v ...any)
+}
+
+// NopLogger is a nop implementation of the Logger interface.
+type NopLogger struct{}
+
+// Print implements Logger interface.
+func (nl *NopLogger) Print(_ ...any) {}
+
+// SetLogger is used to set the default logger for critical errors.
+// The initial logger is os.Stderr.
+func SetLogger(logger Logger) error {
+	if logger == nil {
+		return errors.New("logger is nil")
+	}
+	defaultLogger = logger
+	return nil
+}
+
+// MySQLError is an error type which represents a single MySQL error
+type MySQLError struct {
+	Number   uint16
+	SQLState [5]byte
+	Message  string
+}
+
+func (me *MySQLError) Error() string {
+	if me.SQLState != [5]byte{} {
+		return fmt.Sprintf("Error %d (%s): %s", me.Number, me.SQLState, me.Message)
+	}
+
+	return fmt.Sprintf("Error %d: %s", me.Number, me.Message)
+}
+
+func (me *MySQLError) Is(err error) bool {
+	if merr, ok := err.(*MySQLError); ok {
+		return merr.Number == me.Number
+	}
+	return false
+}

vendor/github.com/go-sql-driver/mysql/fields.go

@@ -0,0 +1,222 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2017 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"database/sql"
+	"reflect"
+)
+
+func (mf *mysqlField) typeDatabaseName() string {
+	switch mf.fieldType {
+	case fieldTypeBit:
+		return "BIT"
+	case fieldTypeBLOB:
+		if mf.charSet != binaryCollationID {
+			return "TEXT"
+		}
+		return "BLOB"
+	case fieldTypeDate:
+		return "DATE"
+	case fieldTypeDateTime:
+		return "DATETIME"
+	case fieldTypeDecimal:
+		return "DECIMAL"
+	case fieldTypeDouble:
+		return "DOUBLE"
+	case fieldTypeEnum:
+		return "ENUM"
+	case fieldTypeFloat:
+		return "FLOAT"
+	case fieldTypeGeometry:
+		return "GEOMETRY"
+	case fieldTypeInt24:
+		if mf.flags&flagUnsigned != 0 {
+			return "UNSIGNED MEDIUMINT"
+		}
+		return "MEDIUMINT"
+	case fieldTypeJSON:
+		return "JSON"
+	case fieldTypeLong:
+		if mf.flags&flagUnsigned != 0 {
+			return "UNSIGNED INT"
+		}
+		return "INT"
+	case fieldTypeLongBLOB:
+		if mf.charSet != binaryCollationID {
+			return "LONGTEXT"
+		}
+		return "LONGBLOB"
+	case fieldTypeLongLong:
+		if mf.flags&flagUnsigned != 0 {
+			return "UNSIGNED BIGINT"
+		}
+		return "BIGINT"
+	case fieldTypeMediumBLOB:
+		if mf.charSet != binaryCollationID {
+			return "MEDIUMTEXT"
+		}
+		return "MEDIUMBLOB"
+	case fieldTypeNewDate:
+		return "DATE"
+	case fieldTypeNewDecimal:
+		return "DECIMAL"
+	case fieldTypeNULL:
+		return "NULL"
+	case fieldTypeSet:
+		return "SET"
+	case fieldTypeShort:
+		if mf.flags&flagUnsigned != 0 {
+			return "UNSIGNED SMALLINT"
+		}
+		return "SMALLINT"
+	case fieldTypeString:
+		if mf.flags&flagEnum != 0 {
+			return "ENUM"
+		} else if mf.flags&flagSet != 0 {
+			return "SET"
+		}
+		if mf.charSet == binaryCollationID {
+			return "BINARY"
+		}
+		return "CHAR"
+	case fieldTypeTime:
+		return "TIME"
+	case fieldTypeTimestamp:
+		return "TIMESTAMP"
+	case fieldTypeTiny:
+		if mf.flags&flagUnsigned != 0 {
+			return "UNSIGNED TINYINT"
+		}
+		return "TINYINT"
+	case fieldTypeTinyBLOB:
+		if mf.charSet != binaryCollationID {
+			return "TINYTEXT"
+		}
+		return "TINYBLOB"
+	case fieldTypeVarChar:
+		if mf.charSet == binaryCollationID {
+			return "VARBINARY"
+		}
+		return "VARCHAR"
+	case fieldTypeVarString:
+		if mf.charSet == binaryCollationID {
+			return "VARBINARY"
+		}
+		return "VARCHAR"
+	case fieldTypeYear:
+		return "YEAR"
+	default:
+		return ""
+	}
+}
+
+var (
+	scanTypeFloat32    = reflect.TypeOf(float32(0))
+	scanTypeFloat64    = reflect.TypeOf(float64(0))
+	scanTypeInt8       = reflect.TypeOf(int8(0))
+	scanTypeInt16      = reflect.TypeOf(int16(0))
+	scanTypeInt32      = reflect.TypeOf(int32(0))
+	scanTypeInt64      = reflect.TypeOf(int64(0))
+	scanTypeNullFloat  = reflect.TypeOf(sql.NullFloat64{})
+	scanTypeNullInt    = reflect.TypeOf(sql.NullInt64{})
+	scanTypeNullTime   = reflect.TypeOf(sql.NullTime{})
+	scanTypeUint8      = reflect.TypeOf(uint8(0))
+	scanTypeUint16     = reflect.TypeOf(uint16(0))
+	scanTypeUint32     = reflect.TypeOf(uint32(0))
+	scanTypeUint64     = reflect.TypeOf(uint64(0))
+	scanTypeString     = reflect.TypeOf("")
+	scanTypeNullString = reflect.TypeOf(sql.NullString{})
+	scanTypeBytes      = reflect.TypeOf([]byte{})
+	scanTypeUnknown    = reflect.TypeOf(new(any))
+)
+
+type mysqlField struct {
+	tableName string
+	name      string
+	length    uint32
+	flags     fieldFlag
+	fieldType fieldType
+	decimals  byte
+	charSet   uint8
+}
+
+func (mf *mysqlField) scanType() reflect.Type {
+	switch mf.fieldType {
+	case fieldTypeTiny:
+		if mf.flags&flagNotNULL != 0 {
+			if mf.flags&flagUnsigned != 0 {
+				return scanTypeUint8
+			}
+			return scanTypeInt8
+		}
+		return scanTypeNullInt
+
+	case fieldTypeShort, fieldTypeYear:
+		if mf.flags&flagNotNULL != 0 {
+			if mf.flags&flagUnsigned != 0 {
+				return scanTypeUint16
+			}
+			return scanTypeInt16
+		}
+		return scanTypeNullInt
+
+	case fieldTypeInt24, fieldTypeLong:
+		if mf.flags&flagNotNULL != 0 {
+			if mf.flags&flagUnsigned != 0 {
+				return scanTypeUint32
+			}
+			return scanTypeInt32
+		}
+		return scanTypeNullInt
+
+	case fieldTypeLongLong:
+		if mf.flags&flagNotNULL != 0 {
+			if mf.flags&flagUnsigned != 0 {
+				return scanTypeUint64
+			}
+			return scanTypeInt64
+		}
+		return scanTypeNullInt
+
+	case fieldTypeFloat:
+		if mf.flags&flagNotNULL != 0 {
+			return scanTypeFloat32
+		}
+		return scanTypeNullFloat
+
+	case fieldTypeDouble:
+		if mf.flags&flagNotNULL != 0 {
+			return scanTypeFloat64
+		}
+		return scanTypeNullFloat
+
+	case fieldTypeBit, fieldTypeTinyBLOB, fieldTypeMediumBLOB, fieldTypeLongBLOB,
+		fieldTypeBLOB, fieldTypeVarString, fieldTypeString, fieldTypeGeometry:
+		if mf.charSet == binaryCollationID {
+			return scanTypeBytes
+		}
+		fallthrough
+	case fieldTypeDecimal, fieldTypeNewDecimal, fieldTypeVarChar,
+		fieldTypeEnum, fieldTypeSet, fieldTypeJSON, fieldTypeTime:
+		if mf.flags&flagNotNULL != 0 {
+			return scanTypeString
+		}
+		return scanTypeNullString
+
+	case fieldTypeDate, fieldTypeNewDate,
+		fieldTypeTimestamp, fieldTypeDateTime:
+		// NullTime is always returned for more consistent behavior as it can
+		// handle both cases of parseTime regardless if the field is nullable.
+		return scanTypeNullTime
+
+	default:
+		return scanTypeUnknown
+	}
+}

vendor/github.com/go-sql-driver/mysql/infile.go

@@ -0,0 +1,182 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"sync"
+)
+
+var (
+	fileRegister       map[string]bool
+	fileRegisterLock   sync.RWMutex
+	readerRegister     map[string]func() io.Reader
+	readerRegisterLock sync.RWMutex
+)
+
+// RegisterLocalFile adds the given file to the file allowlist,
+// so that it can be used by "LOAD DATA LOCAL INFILE <filepath>".
+// Alternatively you can allow the use of all local files with
+// the DSN parameter 'allowAllFiles=true'
+//
+//	filePath := "/home/gopher/data.csv"
+//	mysql.RegisterLocalFile(filePath)
+//	err := db.Exec("LOAD DATA LOCAL INFILE '" + filePath + "' INTO TABLE foo")
+//	if err != nil {
+//	...
+func RegisterLocalFile(filePath string) {
+	fileRegisterLock.Lock()
+	// lazy map init
+	if fileRegister == nil {
+		fileRegister = make(map[string]bool)
+	}
+
+	fileRegister[strings.Trim(filePath, `"`)] = true
+	fileRegisterLock.Unlock()
+}
+
+// DeregisterLocalFile removes the given filepath from the allowlist.
+func DeregisterLocalFile(filePath string) {
+	fileRegisterLock.Lock()
+	delete(fileRegister, strings.Trim(filePath, `"`))
+	fileRegisterLock.Unlock()
+}
+
+// RegisterReaderHandler registers a handler function which is used
+// to receive a io.Reader.
+// The Reader can be used by "LOAD DATA LOCAL INFILE Reader::<name>".
+// If the handler returns a io.ReadCloser Close() is called when the
+// request is finished.
+//
+//	mysql.RegisterReaderHandler("data", func() io.Reader {
+//		var csvReader io.Reader // Some Reader that returns CSV data
+//		... // Open Reader here
+//		return csvReader
+//	})
+//	err := db.Exec("LOAD DATA LOCAL INFILE 'Reader::data' INTO TABLE foo")
+//	if err != nil {
+//	...
+func RegisterReaderHandler(name string, handler func() io.Reader) {
+	readerRegisterLock.Lock()
+	// lazy map init
+	if readerRegister == nil {
+		readerRegister = make(map[string]func() io.Reader)
+	}
+
+	readerRegister[name] = handler
+	readerRegisterLock.Unlock()
+}
+
+// DeregisterReaderHandler removes the ReaderHandler function with
+// the given name from the registry.
+func DeregisterReaderHandler(name string) {
+	readerRegisterLock.Lock()
+	delete(readerRegister, name)
+	readerRegisterLock.Unlock()
+}
+
+func deferredClose(err *error, closer io.Closer) {
+	closeErr := closer.Close()
+	if *err == nil {
+		*err = closeErr
+	}
+}
+
+const defaultPacketSize = 16 * 1024 // 16KB is small enough for disk readahead and large enough for TCP
+
+func (mc *okHandler) handleInFileRequest(name string) (err error) {
+	var rdr io.Reader
+	var data []byte
+	packetSize := defaultPacketSize
+	if mc.maxWriteSize < packetSize {
+		packetSize = mc.maxWriteSize
+	}
+
+	if idx := strings.Index(name, "Reader::"); idx == 0 || (idx > 0 && name[idx-1] == '/') { // io.Reader
+		// The server might return an an absolute path. See issue #355.
+		name = name[idx+8:]
+
+		readerRegisterLock.RLock()
+		handler, inMap := readerRegister[name]
+		readerRegisterLock.RUnlock()
+
+		if inMap {
+			rdr = handler()
+			if rdr != nil {
+				if cl, ok := rdr.(io.Closer); ok {
+					defer deferredClose(&err, cl)
+				}
+			} else {
+				err = fmt.Errorf("reader '%s' is <nil>", name)
+			}
+		} else {
+			err = fmt.Errorf("reader '%s' is not registered", name)
+		}
+	} else { // File
+		name = strings.Trim(name, `"`)
+		fileRegisterLock.RLock()
+		fr := fileRegister[name]
+		fileRegisterLock.RUnlock()
+		if mc.cfg.AllowAllFiles || fr {
+			var file *os.File
+			var fi os.FileInfo
+
+			if file, err = os.Open(name); err == nil {
+				defer deferredClose(&err, file)
+
+				// get file size
+				if fi, err = file.Stat(); err == nil {
+					rdr = file
+					if fileSize := int(fi.Size()); fileSize < packetSize {
+						packetSize = fileSize
+					}
+				}
+			}
+		} else {
+			err = fmt.Errorf("local file '%s' is not registered", name)
+		}
+	}
+
+	// send content packets
+	// if packetSize == 0, the Reader contains no data
+	if err == nil && packetSize > 0 {
+		data := make([]byte, 4+packetSize)
+		var n int
+		for err == nil {
+			n, err = rdr.Read(data[4:])
+			if n > 0 {
+				if ioErr := mc.conn().writePacket(data[:4+n]); ioErr != nil {
+					return ioErr
+				}
+			}
+		}
+		if err == io.EOF {
+			err = nil
+		}
+	}
+
+	// send empty packet (termination)
+	if data == nil {
+		data = make([]byte, 4)
+	}
+	if ioErr := mc.conn().writePacket(data[:4]); ioErr != nil {
+		return ioErr
+	}
+
+	// read OK packet
+	if err == nil {
+		return mc.readResultOK()
+	}
+
+	mc.conn().readPacket()
+	return err
+}

vendor/github.com/go-sql-driver/mysql/nulltime.go

@@ -0,0 +1,71 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"database/sql"
+	"database/sql/driver"
+	"fmt"
+	"time"
+)
+
+// NullTime represents a time.Time that may be NULL.
+// NullTime implements the Scanner interface so
+// it can be used as a scan destination:
+//
+//	var nt NullTime
+//	err := db.QueryRow("SELECT time FROM foo WHERE id=?", id).Scan(&nt)
+//	...
+//	if nt.Valid {
+//	   // use nt.Time
+//	} else {
+//	   // NULL value
+//	}
+//
+// # This NullTime implementation is not driver-specific
+//
+// Deprecated: NullTime doesn't honor the loc DSN parameter.
+// NullTime.Scan interprets a time as UTC, not the loc DSN parameter.
+// Use sql.NullTime instead.
+type NullTime sql.NullTime
+
+// Scan implements the Scanner interface.
+// The value type must be time.Time or string / []byte (formatted time-string),
+// otherwise Scan fails.
+func (nt *NullTime) Scan(value any) (err error) {
+	if value == nil {
+		nt.Time, nt.Valid = time.Time{}, false
+		return
+	}
+
+	switch v := value.(type) {
+	case time.Time:
+		nt.Time, nt.Valid = v, true
+		return
+	case []byte:
+		nt.Time, err = parseDateTime(v, time.UTC)
+		nt.Valid = (err == nil)
+		return
+	case string:
+		nt.Time, err = parseDateTime([]byte(v), time.UTC)
+		nt.Valid = (err == nil)
+		return
+	}
+
+	nt.Valid = false
+	return fmt.Errorf("can't convert %T to time.Time", value)
+}
+
+// Value implements the driver Valuer interface.
+func (nt NullTime) Value() (driver.Value, error) {
+	if !nt.Valid {
+		return nil, nil
+	}
+	return nt.Time, nil
+}

vendor/github.com/go-sql-driver/mysql/result.go

@@ -0,0 +1,50 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import "database/sql/driver"
+
+// Result exposes data not available through *connection.Result.
+//
+// This is accessible by executing statements using sql.Conn.Raw() and
+// downcasting the returned result:
+//
+//	res, err := rawConn.Exec(...)
+//	res.(mysql.Result).AllRowsAffected()
+type Result interface {
+	driver.Result
+	// AllRowsAffected returns a slice containing the affected rows for each
+	// executed statement.
+	AllRowsAffected() []int64
+	// AllLastInsertIds returns a slice containing the last inserted ID for each
+	// executed statement.
+	AllLastInsertIds() []int64
+}
+
+type mysqlResult struct {
+	// One entry in both slices is created for every executed statement result.
+	affectedRows []int64
+	insertIds    []int64
+}
+
+func (res *mysqlResult) LastInsertId() (int64, error) {
+	return res.insertIds[len(res.insertIds)-1], nil
+}
+
+func (res *mysqlResult) RowsAffected() (int64, error) {
+	return res.affectedRows[len(res.affectedRows)-1], nil
+}
+
+func (res *mysqlResult) AllLastInsertIds() []int64 {
+	return append([]int64{}, res.insertIds...) // defensive copy
+}
+
+func (res *mysqlResult) AllRowsAffected() []int64 {
+	return append([]int64{}, res.affectedRows...) // defensive copy
+}

vendor/github.com/go-sql-driver/mysql/rows.go

@@ -0,0 +1,232 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"database/sql/driver"
+	"io"
+	"math"
+	"reflect"
+)
+
+type resultSet struct {
+	columns     []mysqlField
+	columnNames []string
+	done        bool
+}
+
+type mysqlRows struct {
+	mc     *mysqlConn
+	rs     resultSet
+	finish func()
+}
+
+type binaryRows struct {
+	mysqlRows
+}
+
+type textRows struct {
+	mysqlRows
+}
+
+func (rows *mysqlRows) Columns() []string {
+	if rows.rs.columnNames != nil {
+		return rows.rs.columnNames
+	}
+
+	columns := make([]string, len(rows.rs.columns))
+	if rows.mc != nil && rows.mc.cfg.ColumnsWithAlias {
+		for i := range columns {
+			if tableName := rows.rs.columns[i].tableName; len(tableName) > 0 {
+				columns[i] = tableName + "." + rows.rs.columns[i].name
+			} else {
+				columns[i] = rows.rs.columns[i].name
+			}
+		}
+	} else {
+		for i := range columns {
+			columns[i] = rows.rs.columns[i].name
+		}
+	}
+
+	rows.rs.columnNames = columns
+	return columns
+}
+
+func (rows *mysqlRows) ColumnTypeDatabaseTypeName(i int) string {
+	return rows.rs.columns[i].typeDatabaseName()
+}
+
+// func (rows *mysqlRows) ColumnTypeLength(i int) (length int64, ok bool) {
+// 	return int64(rows.rs.columns[i].length), true
+// }
+
+func (rows *mysqlRows) ColumnTypeNullable(i int) (nullable, ok bool) {
+	return rows.rs.columns[i].flags&flagNotNULL == 0, true
+}
+
+func (rows *mysqlRows) ColumnTypePrecisionScale(i int) (int64, int64, bool) {
+	column := rows.rs.columns[i]
+	decimals := int64(column.decimals)
+
+	switch column.fieldType {
+	case fieldTypeDecimal, fieldTypeNewDecimal:
+		if decimals > 0 {
+			return int64(column.length) - 2, decimals, true
+		}
+		return int64(column.length) - 1, decimals, true
+	case fieldTypeTimestamp, fieldTypeDateTime, fieldTypeTime:
+		return decimals, decimals, true
+	case fieldTypeFloat, fieldTypeDouble:
+		if decimals == 0x1f {
+			return math.MaxInt64, math.MaxInt64, true
+		}
+		return math.MaxInt64, decimals, true
+	}
+
+	return 0, 0, false
+}
+
+func (rows *mysqlRows) ColumnTypeScanType(i int) reflect.Type {
+	return rows.rs.columns[i].scanType()
+}
+
+func (rows *mysqlRows) Close() (err error) {
+	if f := rows.finish; f != nil {
+		f()
+		rows.finish = nil
+	}
+
+	mc := rows.mc
+	if mc == nil {
+		return nil
+	}
+	if err := mc.error(); err != nil {
+		return err
+	}
+
+	// flip the buffer for this connection if we need to drain it.
+	// note that for a successful query (i.e. one where rows.next()
+	// has been called until it returns false), `rows.mc` will be nil
+	// by the time the user calls `(*Rows).Close`, so we won't reach this
+	// see: https://github.com/golang/go/commit/651ddbdb5056ded455f47f9c494c67b389622a47
+	mc.buf.flip()
+
+	// Remove unread packets from stream
+	if !rows.rs.done {
+		err = mc.readUntilEOF()
+	}
+	if err == nil {
+		handleOk := mc.clearResult()
+		if err = handleOk.discardResults(); err != nil {
+			return err
+		}
+	}
+
+	rows.mc = nil
+	return err
+}
+
+func (rows *mysqlRows) HasNextResultSet() (b bool) {
+	if rows.mc == nil {
+		return false
+	}
+	return rows.mc.status&statusMoreResultsExists != 0
+}
+
+func (rows *mysqlRows) nextResultSet() (int, error) {
+	if rows.mc == nil {
+		return 0, io.EOF
+	}
+	if err := rows.mc.error(); err != nil {
+		return 0, err
+	}
+
+	// Remove unread packets from stream
+	if !rows.rs.done {
+		if err := rows.mc.readUntilEOF(); err != nil {
+			return 0, err
+		}
+		rows.rs.done = true
+	}
+
+	if !rows.HasNextResultSet() {
+		rows.mc = nil
+		return 0, io.EOF
+	}
+	rows.rs = resultSet{}
+	// rows.mc.affectedRows and rows.mc.insertIds accumulate on each call to
+	// nextResultSet.
+	resLen, err := rows.mc.resultUnchanged().readResultSetHeaderPacket()
+	if err != nil {
+		// Clean up about multi-results flag
+		rows.rs.done = true
+		rows.mc.status = rows.mc.status & (^statusMoreResultsExists)
+	}
+	return resLen, err
+}
+
+func (rows *mysqlRows) nextNotEmptyResultSet() (int, error) {
+	for {
+		resLen, err := rows.nextResultSet()
+		if err != nil {
+			return 0, err
+		}
+
+		if resLen > 0 {
+			return resLen, nil
+		}
+
+		rows.rs.done = true
+	}
+}
+
+func (rows *binaryRows) NextResultSet() error {
+	resLen, err := rows.nextNotEmptyResultSet()
+	if err != nil {
+		return err
+	}
+
+	rows.rs.columns, err = rows.mc.readColumns(resLen)
+	return err
+}
+
+func (rows *binaryRows) Next(dest []driver.Value) error {
+	if mc := rows.mc; mc != nil {
+		if err := mc.error(); err != nil {
+			return err
+		}
+
+		// Fetch next row from stream
+		return rows.readRow(dest)
+	}
+	return io.EOF
+}
+
+func (rows *textRows) NextResultSet() (err error) {
+	resLen, err := rows.nextNotEmptyResultSet()
+	if err != nil {
+		return err
+	}
+
+	rows.rs.columns, err = rows.mc.readColumns(resLen)
+	return err
+}
+
+func (rows *textRows) Next(dest []driver.Value) error {
+	if mc := rows.mc; mc != nil {
+		if err := mc.error(); err != nil {
+			return err
+		}
+
+		// Fetch next row from stream
+		return rows.readRow(dest)
+	}
+	return io.EOF
+}

vendor/github.com/go-sql-driver/mysql/statement.go

@@ -0,0 +1,217 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"fmt"
+	"io"
+	"reflect"
+)
+
+type mysqlStmt struct {
+	mc         *mysqlConn
+	id         uint32
+	paramCount int
+}
+
+func (stmt *mysqlStmt) Close() error {
+	if stmt.mc == nil || stmt.mc.closed.Load() {
+		// driver.Stmt.Close can be called more than once, thus this function
+		// has to be idempotent.
+		// See also Issue #450 and golang/go#16019.
+		//errLog.Print(ErrInvalidConn)
+		return driver.ErrBadConn
+	}
+
+	err := stmt.mc.writeCommandPacketUint32(comStmtClose, stmt.id)
+	stmt.mc = nil
+	return err
+}
+
+func (stmt *mysqlStmt) NumInput() int {
+	return stmt.paramCount
+}
+
+func (stmt *mysqlStmt) ColumnConverter(idx int) driver.ValueConverter {
+	return converter{}
+}
+
+func (stmt *mysqlStmt) CheckNamedValue(nv *driver.NamedValue) (err error) {
+	nv.Value, err = converter{}.ConvertValue(nv.Value)
+	return
+}
+
+func (stmt *mysqlStmt) Exec(args []driver.Value) (driver.Result, error) {
+	if stmt.mc.closed.Load() {
+		stmt.mc.log(ErrInvalidConn)
+		return nil, driver.ErrBadConn
+	}
+	// Send command
+	err := stmt.writeExecutePacket(args)
+	if err != nil {
+		return nil, stmt.mc.markBadConn(err)
+	}
+
+	mc := stmt.mc
+	handleOk := stmt.mc.clearResult()
+
+	// Read Result
+	resLen, err := handleOk.readResultSetHeaderPacket()
+	if err != nil {
+		return nil, err
+	}
+
+	if resLen > 0 {
+		// Columns
+		if err = mc.readUntilEOF(); err != nil {
+			return nil, err
+		}
+
+		// Rows
+		if err := mc.readUntilEOF(); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := handleOk.discardResults(); err != nil {
+		return nil, err
+	}
+
+	copied := mc.result
+	return &copied, nil
+}
+
+func (stmt *mysqlStmt) Query(args []driver.Value) (driver.Rows, error) {
+	return stmt.query(args)
+}
+
+func (stmt *mysqlStmt) query(args []driver.Value) (*binaryRows, error) {
+	if stmt.mc.closed.Load() {
+		stmt.mc.log(ErrInvalidConn)
+		return nil, driver.ErrBadConn
+	}
+	// Send command
+	err := stmt.writeExecutePacket(args)
+	if err != nil {
+		return nil, stmt.mc.markBadConn(err)
+	}
+
+	mc := stmt.mc
+
+	// Read Result
+	handleOk := stmt.mc.clearResult()
+	resLen, err := handleOk.readResultSetHeaderPacket()
+	if err != nil {
+		return nil, err
+	}
+
+	rows := new(binaryRows)
+
+	if resLen > 0 {
+		rows.mc = mc
+		rows.rs.columns, err = mc.readColumns(resLen)
+	} else {
+		rows.rs.done = true
+
+		switch err := rows.NextResultSet(); err {
+		case nil, io.EOF:
+			return rows, nil
+		default:
+			return nil, err
+		}
+	}
+
+	return rows, err
+}
+
+var jsonType = reflect.TypeOf(json.RawMessage{})
+
+type converter struct{}
+
+// ConvertValue mirrors the reference/default converter in database/sql/driver
+// with _one_ exception.  We support uint64 with their high bit and the default
+// implementation does not.  This function should be kept in sync with
+// database/sql/driver defaultConverter.ConvertValue() except for that
+// deliberate difference.
+func (c converter) ConvertValue(v any) (driver.Value, error) {
+	if driver.IsValue(v) {
+		return v, nil
+	}
+
+	if vr, ok := v.(driver.Valuer); ok {
+		sv, err := callValuerValue(vr)
+		if err != nil {
+			return nil, err
+		}
+		if driver.IsValue(sv) {
+			return sv, nil
+		}
+		// A value returned from the Valuer interface can be "a type handled by
+		// a database driver's NamedValueChecker interface" so we should accept
+		// uint64 here as well.
+		if u, ok := sv.(uint64); ok {
+			return u, nil
+		}
+		return nil, fmt.Errorf("non-Value type %T returned from Value", sv)
+	}
+	rv := reflect.ValueOf(v)
+	switch rv.Kind() {
+	case reflect.Ptr:
+		// indirect pointers
+		if rv.IsNil() {
+			return nil, nil
+		} else {
+			return c.ConvertValue(rv.Elem().Interface())
+		}
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return rv.Int(), nil
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		return rv.Uint(), nil
+	case reflect.Float32, reflect.Float64:
+		return rv.Float(), nil
+	case reflect.Bool:
+		return rv.Bool(), nil
+	case reflect.Slice:
+		switch t := rv.Type(); {
+		case t == jsonType:
+			return v, nil
+		case t.Elem().Kind() == reflect.Uint8:
+			return rv.Bytes(), nil
+		default:
+			return nil, fmt.Errorf("unsupported type %T, a slice of %s", v, t.Elem().Kind())
+		}
+	case reflect.String:
+		return rv.String(), nil
+	}
+	return nil, fmt.Errorf("unsupported type %T, a %s", v, rv.Kind())
+}
+
+var valuerReflectType = reflect.TypeOf((*driver.Valuer)(nil)).Elem()
+
+// callValuerValue returns vr.Value(), with one exception:
+// If vr.Value is an auto-generated method on a pointer type and the
+// pointer is nil, it would panic at runtime in the panicwrap
+// method. Treat it like nil instead.
+//
+// This is so people can implement driver.Value on value types and
+// still use nil pointers to those types to mean nil/NULL, just like
+// string/*string.
+//
+// This is an exact copy of the same-named unexported function from the
+// database/sql package.
+func callValuerValue(vr driver.Valuer) (v driver.Value, err error) {
+	if rv := reflect.ValueOf(vr); rv.Kind() == reflect.Ptr &&
+		rv.IsNil() &&
+		rv.Type().Elem().Implements(valuerReflectType) {
+		return nil, nil
+	}
+	return vr.Value()
+}

vendor/github.com/go-sql-driver/mysql/transaction.go

@@ -0,0 +1,31 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+type mysqlTx struct {
+	mc *mysqlConn
+}
+
+func (tx *mysqlTx) Commit() (err error) {
+	if tx.mc == nil || tx.mc.closed.Load() {
+		return ErrInvalidConn
+	}
+	err = tx.mc.exec("COMMIT")
+	tx.mc = nil
+	return
+}
+
+func (tx *mysqlTx) Rollback() (err error) {
+	if tx.mc == nil || tx.mc.closed.Load() {
+		return ErrInvalidConn
+	}
+	err = tx.mc.exec("ROLLBACK")
+	tx.mc = nil
+	return
+}

vendor/github.com/go-sql-driver/mysql/utils.go

@@ -0,0 +1,843 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
+//
+// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package mysql
+
+import (
+	"crypto/tls"
+	"database/sql"
+	"database/sql/driver"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+// Registry for custom tls.Configs
+var (
+	tlsConfigLock     sync.RWMutex
+	tlsConfigRegistry map[string]*tls.Config
+)
+
+// RegisterTLSConfig registers a custom tls.Config to be used with sql.Open.
+// Use the key as a value in the DSN where tls=value.
+//
+// Note: The provided tls.Config is exclusively owned by the driver after
+// registering it.
+//
+//	rootCertPool := x509.NewCertPool()
+//	pem, err := os.ReadFile("/path/ca-cert.pem")
+//	if err != nil {
+//	    log.Fatal(err)
+//	}
+//	if ok := rootCertPool.AppendCertsFromPEM(pem); !ok {
+//	    log.Fatal("Failed to append PEM.")
+//	}
+//	clientCert := make([]tls.Certificate, 0, 1)
+//	certs, err := tls.LoadX509KeyPair("/path/client-cert.pem", "/path/client-key.pem")
+//	if err != nil {
+//	    log.Fatal(err)
+//	}
+//	clientCert = append(clientCert, certs)
+//	mysql.RegisterTLSConfig("custom", &tls.Config{
+//	    RootCAs: rootCertPool,
+//	    Certificates: clientCert,
+//	})
+//	db, err := sql.Open("mysql", "user@tcp(localhost:3306)/test?tls=custom")
+func RegisterTLSConfig(key string, config *tls.Config) error {
+	if _, isBool := readBool(key); isBool || strings.ToLower(key) == "skip-verify" || strings.ToLower(key) == "preferred" {
+		return fmt.Errorf("key '%s' is reserved", key)
+	}
+
+	tlsConfigLock.Lock()
+	if tlsConfigRegistry == nil {
+		tlsConfigRegistry = make(map[string]*tls.Config)
+	}
+
+	tlsConfigRegistry[key] = config
+	tlsConfigLock.Unlock()
+	return nil
+}
+
+// DeregisterTLSConfig removes the tls.Config associated with key.
+func DeregisterTLSConfig(key string) {
+	tlsConfigLock.Lock()
+	if tlsConfigRegistry != nil {
+		delete(tlsConfigRegistry, key)
+	}
+	tlsConfigLock.Unlock()
+}
+
+func getTLSConfigClone(key string) (config *tls.Config) {
+	tlsConfigLock.RLock()
+	if v, ok := tlsConfigRegistry[key]; ok {
+		config = v.Clone()
+	}
+	tlsConfigLock.RUnlock()
+	return
+}
+
+// Returns the bool value of the input.
+// The 2nd return value indicates if the input was a valid bool value
+func readBool(input string) (value bool, valid bool) {
+	switch input {
+	case "1", "true", "TRUE", "True":
+		return true, true
+	case "0", "false", "FALSE", "False":
+		return false, true
+	}
+
+	// Not a valid bool value
+	return
+}
+
+/******************************************************************************
+*                           Time related utils                                *
+******************************************************************************/
+
+func parseDateTime(b []byte, loc *time.Location) (time.Time, error) {
+	const base = "0000-00-00 00:00:00.000000"
+	switch len(b) {
+	case 10, 19, 21, 22, 23, 24, 25, 26: // up to "YYYY-MM-DD HH:MM:SS.MMMMMM"
+		if string(b) == base[:len(b)] {
+			return time.Time{}, nil
+		}
+
+		year, err := parseByteYear(b)
+		if err != nil {
+			return time.Time{}, err
+		}
+		if b[4] != '-' {
+			return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[4])
+		}
+
+		m, err := parseByte2Digits(b[5], b[6])
+		if err != nil {
+			return time.Time{}, err
+		}
+		month := time.Month(m)
+
+		if b[7] != '-' {
+			return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[7])
+		}
+
+		day, err := parseByte2Digits(b[8], b[9])
+		if err != nil {
+			return time.Time{}, err
+		}
+		if len(b) == 10 {
+			return time.Date(year, month, day, 0, 0, 0, 0, loc), nil
+		}
+
+		if b[10] != ' ' {
+			return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[10])
+		}
+
+		hour, err := parseByte2Digits(b[11], b[12])
+		if err != nil {
+			return time.Time{}, err
+		}
+		if b[13] != ':' {
+			return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[13])
+		}
+
+		min, err := parseByte2Digits(b[14], b[15])
+		if err != nil {
+			return time.Time{}, err
+		}
+		if b[16] != ':' {
+			return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[16])
+		}
+
+		sec, err := parseByte2Digits(b[17], b[18])
+		if err != nil {
+			return time.Time{}, err
+		}
+		if len(b) == 19 {
+			return time.Date(year, month, day, hour, min, sec, 0, loc), nil
+		}
+
+		if b[19] != '.' {
+			return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[19])
+		}
+		nsec, err := parseByteNanoSec(b[20:])
+		if err != nil {
+			return time.Time{}, err
+		}
+		return time.Date(year, month, day, hour, min, sec, nsec, loc), nil
+	default:
+		return time.Time{}, fmt.Errorf("invalid time bytes: %s", b)
+	}
+}
+
+func parseByteYear(b []byte) (int, error) {
+	year, n := 0, 1000
+	for i := 0; i < 4; i++ {
+		v, err := bToi(b[i])
+		if err != nil {
+			return 0, err
+		}
+		year += v * n
+		n /= 10
+	}
+	return year, nil
+}
+
+func parseByte2Digits(b1, b2 byte) (int, error) {
+	d1, err := bToi(b1)
+	if err != nil {
+		return 0, err
+	}
+	d2, err := bToi(b2)
+	if err != nil {
+		return 0, err
+	}
+	return d1*10 + d2, nil
+}
+
+func parseByteNanoSec(b []byte) (int, error) {
+	ns, digit := 0, 100000 // max is 6-digits
+	for i := 0; i < len(b); i++ {
+		v, err := bToi(b[i])
+		if err != nil {
+			return 0, err
+		}
+		ns += v * digit
+		digit /= 10
+	}
+	// nanoseconds has 10-digits. (needs to scale digits)
+	// 10 - 6 = 4, so we have to multiple 1000.
+	return ns * 1000, nil
+}
+
+func bToi(b byte) (int, error) {
+	if b < '0' || b > '9' {
+		return 0, errors.New("not [0-9]")
+	}
+	return int(b - '0'), nil
+}
+
+func parseBinaryDateTime(num uint64, data []byte, loc *time.Location) (driver.Value, error) {
+	switch num {
+	case 0:
+		return time.Time{}, nil
+	case 4:
+		return time.Date(
+			int(binary.LittleEndian.Uint16(data[:2])), // year
+			time.Month(data[2]),                       // month
+			int(data[3]),                              // day
+			0, 0, 0, 0,
+			loc,
+		), nil
+	case 7:
+		return time.Date(
+			int(binary.LittleEndian.Uint16(data[:2])), // year
+			time.Month(data[2]),                       // month
+			int(data[3]),                              // day
+			int(data[4]),                              // hour
+			int(data[5]),                              // minutes
+			int(data[6]),                              // seconds
+			0,
+			loc,
+		), nil
+	case 11:
+		return time.Date(
+			int(binary.LittleEndian.Uint16(data[:2])), // year
+			time.Month(data[2]),                       // month
+			int(data[3]),                              // day
+			int(data[4]),                              // hour
+			int(data[5]),                              // minutes
+			int(data[6]),                              // seconds
+			int(binary.LittleEndian.Uint32(data[7:11]))*1000, // nanoseconds
+			loc,
+		), nil
+	}
+	return nil, fmt.Errorf("invalid DATETIME packet length %d", num)
+}
+
+func appendDateTime(buf []byte, t time.Time, timeTruncate time.Duration) ([]byte, error) {
+	if timeTruncate > 0 {
+		t = t.Truncate(timeTruncate)
+	}
+
+	year, month, day := t.Date()
+	hour, min, sec := t.Clock()
+	nsec := t.Nanosecond()
+
+	if year < 1 || year > 9999 {
+		return buf, errors.New("year is not in the range [1, 9999]: " + strconv.Itoa(year)) // use errors.New instead of fmt.Errorf to avoid year escape to heap
+	}
+	year100 := year / 100
+	year1 := year % 100
+
+	var localBuf [len("2006-01-02T15:04:05.999999999")]byte // does not escape
+	localBuf[0], localBuf[1], localBuf[2], localBuf[3] = digits10[year100], digits01[year100], digits10[year1], digits01[year1]
+	localBuf[4] = '-'
+	localBuf[5], localBuf[6] = digits10[month], digits01[month]
+	localBuf[7] = '-'
+	localBuf[8], localBuf[9] = digits10[day], digits01[day]
+
+	if hour == 0 && min == 0 && sec == 0 && nsec == 0 {
+		return append(buf, localBuf[:10]...), nil
+	}
+
+	localBuf[10] = ' '
+	localBuf[11], localBuf[12] = digits10[hour], digits01[hour]
+	localBuf[13] = ':'
+	localBuf[14], localBuf[15] = digits10[min], digits01[min]
+	localBuf[16] = ':'
+	localBuf[17], localBuf[18] = digits10[sec], digits01[sec]
+
+	if nsec == 0 {
+		return append(buf, localBuf[:19]...), nil
+	}
+	nsec100000000 := nsec / 100000000
+	nsec1000000 := (nsec / 1000000) % 100
+	nsec10000 := (nsec / 10000) % 100
+	nsec100 := (nsec / 100) % 100
+	nsec1 := nsec % 100
+	localBuf[19] = '.'
+
+	// milli second
+	localBuf[20], localBuf[21], localBuf[22] =
+		digits01[nsec100000000], digits10[nsec1000000], digits01[nsec1000000]
+	// micro second
+	localBuf[23], localBuf[24], localBuf[25] =
+		digits10[nsec10000], digits01[nsec10000], digits10[nsec100]
+	// nano second
+	localBuf[26], localBuf[27], localBuf[28] =
+		digits01[nsec100], digits10[nsec1], digits01[nsec1]
+
+	// trim trailing zeros
+	n := len(localBuf)
+	for n > 0 && localBuf[n-1] == '0' {
+		n--
+	}
+
+	return append(buf, localBuf[:n]...), nil
+}
+
+// zeroDateTime is used in formatBinaryDateTime to avoid an allocation
+// if the DATE or DATETIME has the zero value.
+// It must never be changed.
+// The current behavior depends on database/sql copying the result.
+var zeroDateTime = []byte("0000-00-00 00:00:00.000000")
+
+const digits01 = "0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789"
+const digits10 = "0000000000111111111122222222223333333333444444444455555555556666666666777777777788888888889999999999"
+
+func appendMicrosecs(dst, src []byte, decimals int) []byte {
+	if decimals <= 0 {
+		return dst
+	}
+	if len(src) == 0 {
+		return append(dst, ".000000"[:decimals+1]...)
+	}
+
+	microsecs := binary.LittleEndian.Uint32(src[:4])
+	p1 := byte(microsecs / 10000)
+	microsecs -= 10000 * uint32(p1)
+	p2 := byte(microsecs / 100)
+	microsecs -= 100 * uint32(p2)
+	p3 := byte(microsecs)
+
+	switch decimals {
+	default:
+		return append(dst, '.',
+			digits10[p1], digits01[p1],
+			digits10[p2], digits01[p2],
+			digits10[p3], digits01[p3],
+		)
+	case 1:
+		return append(dst, '.',
+			digits10[p1],
+		)
+	case 2:
+		return append(dst, '.',
+			digits10[p1], digits01[p1],
+		)
+	case 3:
+		return append(dst, '.',
+			digits10[p1], digits01[p1],
+			digits10[p2],
+		)
+	case 4:
+		return append(dst, '.',
+			digits10[p1], digits01[p1],
+			digits10[p2], digits01[p2],
+		)
+	case 5:
+		return append(dst, '.',
+			digits10[p1], digits01[p1],
+			digits10[p2], digits01[p2],
+			digits10[p3],
+		)
+	}
+}
+
+func formatBinaryDateTime(src []byte, length uint8) (driver.Value, error) {
+	// length expects the deterministic length of the zero value,
+	// negative time and 100+ hours are automatically added if needed
+	if len(src) == 0 {
+		return zeroDateTime[:length], nil
+	}
+	var dst []byte      // return value
+	var p1, p2, p3 byte // current digit pair
+
+	switch length {
+	case 10, 19, 21, 22, 23, 24, 25, 26:
+	default:
+		t := "DATE"
+		if length > 10 {
+			t += "TIME"
+		}
+		return nil, fmt.Errorf("illegal %s length %d", t, length)
+	}
+	switch len(src) {
+	case 4, 7, 11:
+	default:
+		t := "DATE"
+		if length > 10 {
+			t += "TIME"
+		}
+		return nil, fmt.Errorf("illegal %s packet length %d", t, len(src))
+	}
+	dst = make([]byte, 0, length)
+	// start with the date
+	year := binary.LittleEndian.Uint16(src[:2])
+	pt := year / 100
+	p1 = byte(year - 100*uint16(pt))
+	p2, p3 = src[2], src[3]
+	dst = append(dst,
+		digits10[pt], digits01[pt],
+		digits10[p1], digits01[p1], '-',
+		digits10[p2], digits01[p2], '-',
+		digits10[p3], digits01[p3],
+	)
+	if length == 10 {
+		return dst, nil
+	}
+	if len(src) == 4 {
+		return append(dst, zeroDateTime[10:length]...), nil
+	}
+	dst = append(dst, ' ')
+	p1 = src[4] // hour
+	src = src[5:]
+
+	// p1 is 2-digit hour, src is after hour
+	p2, p3 = src[0], src[1]
+	dst = append(dst,
+		digits10[p1], digits01[p1], ':',
+		digits10[p2], digits01[p2], ':',
+		digits10[p3], digits01[p3],
+	)
+	return appendMicrosecs(dst, src[2:], int(length)-20), nil
+}
+
+func formatBinaryTime(src []byte, length uint8) (driver.Value, error) {
+	// length expects the deterministic length of the zero value,
+	// negative time and 100+ hours are automatically added if needed
+	if len(src) == 0 {
+		return zeroDateTime[11 : 11+length], nil
+	}
+	var dst []byte // return value
+
+	switch length {
+	case
+		8,                      // time (can be up to 10 when negative and 100+ hours)
+		10, 11, 12, 13, 14, 15: // time with fractional seconds
+	default:
+		return nil, fmt.Errorf("illegal TIME length %d", length)
+	}
+	switch len(src) {
+	case 8, 12:
+	default:
+		return nil, fmt.Errorf("invalid TIME packet length %d", len(src))
+	}
+	// +2 to enable negative time and 100+ hours
+	dst = make([]byte, 0, length+2)
+	if src[0] == 1 {
+		dst = append(dst, '-')
+	}
+	days := binary.LittleEndian.Uint32(src[1:5])
+	hours := int64(days)*24 + int64(src[5])
+
+	if hours >= 100 {
+		dst = strconv.AppendInt(dst, hours, 10)
+	} else {
+		dst = append(dst, digits10[hours], digits01[hours])
+	}
+
+	min, sec := src[6], src[7]
+	dst = append(dst, ':',
+		digits10[min], digits01[min], ':',
+		digits10[sec], digits01[sec],
+	)
+	return appendMicrosecs(dst, src[8:], int(length)-9), nil
+}
+
+/******************************************************************************
+*                       Convert from and to bytes                             *
+******************************************************************************/
+
+func uint64ToBytes(n uint64) []byte {
+	return []byte{
+		byte(n),
+		byte(n >> 8),
+		byte(n >> 16),
+		byte(n >> 24),
+		byte(n >> 32),
+		byte(n >> 40),
+		byte(n >> 48),
+		byte(n >> 56),
+	}
+}
+
+func uint64ToString(n uint64) []byte {
+	var a [20]byte
+	i := 20
+
+	// U+0030 = 0
+	// ...
+	// U+0039 = 9
+
+	var q uint64
+	for n >= 10 {
+		i--
+		q = n / 10
+		a[i] = uint8(n-q*10) + 0x30
+		n = q
+	}
+
+	i--
+	a[i] = uint8(n) + 0x30
+
+	return a[i:]
+}
+
+// treats string value as unsigned integer representation
+func stringToInt(b []byte) int {
+	val := 0
+	for i := range b {
+		val *= 10
+		val += int(b[i] - 0x30)
+	}
+	return val
+}
+
+// returns the string read as a bytes slice, whether the value is NULL,
+// the number of bytes read and an error, in case the string is longer than
+// the input slice
+func readLengthEncodedString(b []byte) ([]byte, bool, int, error) {
+	// Get length
+	num, isNull, n := readLengthEncodedInteger(b)
+	if num < 1 {
+		return b[n:n], isNull, n, nil
+	}
+
+	n += int(num)
+
+	// Check data length
+	if len(b) >= n {
+		return b[n-int(num) : n : n], false, n, nil
+	}
+	return nil, false, n, io.EOF
+}
+
+// returns the number of bytes skipped and an error, in case the string is
+// longer than the input slice
+func skipLengthEncodedString(b []byte) (int, error) {
+	// Get length
+	num, _, n := readLengthEncodedInteger(b)
+	if num < 1 {
+		return n, nil
+	}
+
+	n += int(num)
+
+	// Check data length
+	if len(b) >= n {
+		return n, nil
+	}
+	return n, io.EOF
+}
+
+// returns the number read, whether the value is NULL and the number of bytes read
+func readLengthEncodedInteger(b []byte) (uint64, bool, int) {
+	// See issue #349
+	if len(b) == 0 {
+		return 0, true, 1
+	}
+
+	switch b[0] {
+	// 251: NULL
+	case 0xfb:
+		return 0, true, 1
+
+	// 252: value of following 2
+	case 0xfc:
+		return uint64(b[1]) | uint64(b[2])<<8, false, 3
+
+	// 253: value of following 3
+	case 0xfd:
+		return uint64(b[1]) | uint64(b[2])<<8 | uint64(b[3])<<16, false, 4
+
+	// 254: value of following 8
+	case 0xfe:
+		return uint64(b[1]) | uint64(b[2])<<8 | uint64(b[3])<<16 |
+				uint64(b[4])<<24 | uint64(b[5])<<32 | uint64(b[6])<<40 |
+				uint64(b[7])<<48 | uint64(b[8])<<56,
+			false, 9
+	}
+
+	// 0-250: value of first byte
+	return uint64(b[0]), false, 1
+}
+
+// encodes a uint64 value and appends it to the given bytes slice
+func appendLengthEncodedInteger(b []byte, n uint64) []byte {
+	switch {
+	case n <= 250:
+		return append(b, byte(n))
+
+	case n <= 0xffff:
+		return append(b, 0xfc, byte(n), byte(n>>8))
+
+	case n <= 0xffffff:
+		return append(b, 0xfd, byte(n), byte(n>>8), byte(n>>16))
+	}
+	return append(b, 0xfe, byte(n), byte(n>>8), byte(n>>16), byte(n>>24),
+		byte(n>>32), byte(n>>40), byte(n>>48), byte(n>>56))
+}
+
+func appendLengthEncodedString(b []byte, s string) []byte {
+	b = appendLengthEncodedInteger(b, uint64(len(s)))
+	return append(b, s...)
+}
+
+// reserveBuffer checks cap(buf) and expand buffer to len(buf) + appendSize.
+// If cap(buf) is not enough, reallocate new buffer.
+func reserveBuffer(buf []byte, appendSize int) []byte {
+	newSize := len(buf) + appendSize
+	if cap(buf) < newSize {
+		// Grow buffer exponentially
+		newBuf := make([]byte, len(buf)*2+appendSize)
+		copy(newBuf, buf)
+		buf = newBuf
+	}
+	return buf[:newSize]
+}
+
+// escapeBytesBackslash escapes []byte with backslashes (\)
+// This escapes the contents of a string (provided as []byte) by adding backslashes before special
+// characters, and turning others into specific escape sequences, such as
+// turning newlines into \n and null bytes into \0.
+// https://github.com/mysql/mysql-server/blob/mysql-5.7.5/mysys/charset.c#L823-L932
+func escapeBytesBackslash(buf, v []byte) []byte {
+	pos := len(buf)
+	buf = reserveBuffer(buf, len(v)*2)
+
+	for _, c := range v {
+		switch c {
+		case '\x00':
+			buf[pos+1] = '0'
+			buf[pos] = '\\'
+			pos += 2
+		case '\n':
+			buf[pos+1] = 'n'
+			buf[pos] = '\\'
+			pos += 2
+		case '\r':
+			buf[pos+1] = 'r'
+			buf[pos] = '\\'
+			pos += 2
+		case '\x1a':
+			buf[pos+1] = 'Z'
+			buf[pos] = '\\'
+			pos += 2
+		case '\'':
+			buf[pos+1] = '\''
+			buf[pos] = '\\'
+			pos += 2
+		case '"':
+			buf[pos+1] = '"'
+			buf[pos] = '\\'
+			pos += 2
+		case '\\':
+			buf[pos+1] = '\\'
+			buf[pos] = '\\'
+			pos += 2
+		default:
+			buf[pos] = c
+			pos++
+		}
+	}
+
+	return buf[:pos]
+}
+
+// escapeStringBackslash is similar to escapeBytesBackslash but for string.
+func escapeStringBackslash(buf []byte, v string) []byte {
+	pos := len(buf)
+	buf = reserveBuffer(buf, len(v)*2)
+
+	for i := 0; i < len(v); i++ {
+		c := v[i]
+		switch c {
+		case '\x00':
+			buf[pos+1] = '0'
+			buf[pos] = '\\'
+			pos += 2
+		case '\n':
+			buf[pos+1] = 'n'
+			buf[pos] = '\\'
+			pos += 2
+		case '\r':
+			buf[pos+1] = 'r'
+			buf[pos] = '\\'
+			pos += 2
+		case '\x1a':
+			buf[pos+1] = 'Z'
+			buf[pos] = '\\'
+			pos += 2
+		case '\'':
+			buf[pos+1] = '\''
+			buf[pos] = '\\'
+			pos += 2
+		case '"':
+			buf[pos+1] = '"'
+			buf[pos] = '\\'
+			pos += 2
+		case '\\':
+			buf[pos+1] = '\\'
+			buf[pos] = '\\'
+			pos += 2
+		default:
+			buf[pos] = c
+			pos++
+		}
+	}
+
+	return buf[:pos]
+}
+
+// escapeBytesQuotes escapes apostrophes in []byte by doubling them up.
+// This escapes the contents of a string by doubling up any apostrophes that
+// it contains. This is used when the NO_BACKSLASH_ESCAPES SQL_MODE is in
+// effect on the server.
+// https://github.com/mysql/mysql-server/blob/mysql-5.7.5/mysys/charset.c#L963-L1038
+func escapeBytesQuotes(buf, v []byte) []byte {
+	pos := len(buf)
+	buf = reserveBuffer(buf, len(v)*2)
+
+	for _, c := range v {
+		if c == '\'' {
+			buf[pos+1] = '\''
+			buf[pos] = '\''
+			pos += 2
+		} else {
+			buf[pos] = c
+			pos++
+		}
+	}
+
+	return buf[:pos]
+}
+
+// escapeStringQuotes is similar to escapeBytesQuotes but for string.
+func escapeStringQuotes(buf []byte, v string) []byte {
+	pos := len(buf)
+	buf = reserveBuffer(buf, len(v)*2)
+
+	for i := 0; i < len(v); i++ {
+		c := v[i]
+		if c == '\'' {
+			buf[pos+1] = '\''
+			buf[pos] = '\''
+			pos += 2
+		} else {
+			buf[pos] = c
+			pos++
+		}
+	}
+
+	return buf[:pos]
+}
+
+/******************************************************************************
+*                               Sync utils                                    *
+******************************************************************************/
+
+// noCopy may be embedded into structs which must not be copied
+// after the first use.
+//
+// See https://github.com/golang/go/issues/8005#issuecomment-190753527
+// for details.
+type noCopy struct{}
+
+// Lock is a no-op used by -copylocks checker from `go vet`.
+func (*noCopy) Lock() {}
+
+// Unlock is a no-op used by -copylocks checker from `go vet`.
+// noCopy should implement sync.Locker from Go 1.11
+// https://github.com/golang/go/commit/c2eba53e7f80df21d51285879d51ab81bcfbf6bc
+// https://github.com/golang/go/issues/26165
+func (*noCopy) Unlock() {}
+
+// atomicError is a wrapper for atomically accessed error values
+type atomicError struct {
+	_     noCopy
+	value atomic.Value
+}
+
+// Set sets the error value regardless of the previous value.
+// The value must not be nil
+func (ae *atomicError) Set(value error) {
+	ae.value.Store(value)
+}
+
+// Value returns the current error value
+func (ae *atomicError) Value() error {
+	if v := ae.value.Load(); v != nil {
+		// this will panic if the value doesn't implement the error interface
+		return v.(error)
+	}
+	return nil
+}
+
+func namedValueToValue(named []driver.NamedValue) ([]driver.Value, error) {
+	dargs := make([]driver.Value, len(named))
+	for n, param := range named {
+		if len(param.Name) > 0 {
+			// TODO: support the use of Named Parameters #561
+			return nil, errors.New("mysql: driver does not support the use of Named Parameters")
+		}
+		dargs[n] = param.Value
+	}
+	return dargs, nil
+}
+
+func mapIsolationLevel(level driver.IsolationLevel) (string, error) {
+	switch sql.IsolationLevel(level) {
+	case sql.LevelRepeatableRead:
+		return "REPEATABLE READ", nil
+	case sql.LevelReadCommitted:
+		return "READ COMMITTED", nil
+	case sql.LevelReadUncommitted:
+		return "READ UNCOMMITTED", nil
+	case sql.LevelSerializable:
+		return "SERIALIZABLE", nil
+	default:
+		return "", fmt.Errorf("mysql: unsupported isolation level: %v", level)
+	}
+}

vendor/github.com/gobuffalo/here/.gitignore

@@ -1,28 +0,0 @@
-*.log
-.DS_Store
-doc
-tmp
-pkg
-*.pid
-coverage
-coverage.data
-build/*
-*.pbxuser
-*.mode1v3
-.svn
-profile
-.console_history
-.sass-cache/*
-solr/
-.jhw-cache/
-jhw.*
-*.sublime*
-node_modules/
-dist/
-generated/
-.vendor/
-bin/*
-gin-bin
-.idea/
-.vscode
-cover.out

vendor/github.com/gobuffalo/here/.goreleaser.yml

@@ -1,45 +0,0 @@
-builds:
-  -
-    main: ./cmd/here/main.go
-    env:
-      - CGO_ENABLED=0
-    ldflags:
-      - -s -w -X "github.com/gobuffalo/here.Version={{.Tag}}"
-    goos:
-      - darwin
-      - linux
-      - windows
-    goarch:
-      - amd64
-      - 386
-      - arm
-      - arm64
-    goarm:
-      - 6
-      - 7
-archives:
-  -
-    replacements:
-      '386': i386
-      darwin: Darwin
-      linux: Linux
-      windows: Windows
-      amd64: x86_64
-checksum:
-  name_template: checksums.txt
-snapshot:
-  name_template: '{{ .Tag }}-next'
-changelog:
-  sort: asc
-  filters:
-    exclude:
-      - '^docs:'
-      - '^test:'
-brews:
-  -
-    name: 'here'
-    github:
-      owner: 'gobuffalo'
-      name: 'homebrew-tap'
-    install: |
-      bin.install "here"

vendor/github.com/gobuffalo/here/LICENSE

@@ -1,21 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) 2019 Mark Bates
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

vendor/github.com/gobuffalo/here/Makefile

@@ -1,50 +0,0 @@
-TAGS ?= ""
-GO_BIN ?= "go"
-
-
-install: tidy
-	cd ./cmd/here && $(GO_BIN) install -tags ${TAGS} -v .
-	make tidy
-
-tidy:
-	$(GO_BIN) mod tidy -v
-
-build: tidy
-	$(GO_BIN) build -v .
-	make tidy
-
-test: tidy
-	$(GO_BIN) test -count 1 -cover -tags ${TAGS} -timeout 10s ./...
-	make tidy
-
-cov:
-	$(GO_BIN) test -coverprofile cover.out -count 1 -tags ${TAGS} ./...
-	go tool cover -html cover.out
-	make tidy
-
-ci-test:
-	$(GO_BIN) test -tags ${TAGS} -race ./...
-
-lint:
-	go get github.com/golangci/golangci-lint/cmd/golangci-lint
-	golangci-lint run --enable-all
-	make tidy
-
-update:
-	rm go.*
-	$(GO_BIN) mod init
-	$(GO_BIN) mod tidy
-	make test
-	make install
-	make tidy
-
-release-test:
-	$(GO_BIN) test -tags ${TAGS} -race ./...
-	make tidy
-
-release:
-	make tidy
-	release -y -f version.go --skip-packr
-	make tidy
-
-

vendor/github.com/gobuffalo/here/README.md

@@ -1,277 +0,0 @@
-# Here
-
-[![](https://github.com/gobuffalo/here/workflows/Tests/badge.svg)](https://github.com/gobuffalo/here/actions)
-[![GoDoc](https://godoc.org/github.com/gobuffalo/here?status.svg)](https://godoc.org/github.com/gobuffalo/here)
-
-Here will get you **accurate** Go information about the directory of package requested.
-
-### Requirements
-
-* Go 1.13+
-* Go Modules
-
-## CLI
-
-While you can use the tool via its API, you can also use the CLI to get a JSON version of the data.
-
-### Installation
-
-```bash
-$ go get github.com/gobuffalo/here/cmd/here
-```
-
-### Usage
-
-#### Default
-
-```bash
-$ here
-
-{
-  "Dir": "$GOPATH/src/github.com/gobuffalo/here",
-  "ImportPath": "github.com/gobuffalo/here",
-  "Name": "here",
-  "Doc": "",
-  "Target": "$GOPATH/pkg/darwin_amd64/github.com/gobuffalo/here.a",
-  "Root": "$GOPATH",
-  "Match": [
-    "."
-  ],
-  "Stale": true,
-  "StaleReason": "not installed but available in build cache",
-  "GoFiles": [
-    "current.go",
-    "dir.go",
-    "here.go",
-    "info.go",
-    "info_map.go",
-    "module.go",
-    "pkg.go",
-    "version.go"
-  ],
-  "Imports": [
-    "bytes",
-    "encoding/json",
-    "fmt",
-    "os",
-    "os/exec",
-    "path/filepath",
-    "regexp",
-    "sync"
-  ],
-  "Deps": [
-    "bytes",
-    "context",
-    "encoding",
-    "encoding/base64",
-    "encoding/binary",
-    "encoding/json",
-    "errors",
-    "fmt",
-    "internal/bytealg",
-    "internal/cpu",
-    "internal/fmtsort",
-    "internal/oserror",
-    "internal/poll",
-    "internal/race",
-    "internal/reflectlite",
-    "internal/syscall/unix",
-    "internal/testlog",
-    "io",
-    "math",
-    "math/bits",
-    "os",
-    "os/exec",
-    "path/filepath",
-    "reflect",
-    "regexp",
-    "regexp/syntax",
-    "runtime",
-    "runtime/internal/atomic",
-    "runtime/internal/math",
-    "runtime/internal/sys",
-    "sort",
-    "strconv",
-    "strings",
-    "sync",
-    "sync/atomic",
-    "syscall",
-    "time",
-    "unicode",
-    "unicode/utf16",
-    "unicode/utf8",
-    "unsafe"
-  ],
-  "TestGoFiles": [
-    "current_test.go",
-    "dir_test.go",
-    "here_test.go",
-    "info_test.go",
-    "module_test.go",
-    "pkg_test.go"
-  ],
-  "TestImports": [
-    "github.com/stretchr/testify/require",
-    "os",
-    "path/filepath",
-    "testing"
-  ],
-  "Module": {
-    "Path": "github.com/gobuffalo/here",
-    "Main": true,
-    "Dir": "$GOPATH/src/github.com/gobuffalo/here",
-    "GoMod": "$GOPATH/src/github.com/gobuffalo/here/go.mod",
-    "GoVersion": "1.13"
-  }
-}
-```
-
-#### By Directory
-
-```bash
-$ here cmd/here
-
-{
-  "Dir": "$GOPATH/src/github.com/gobuffalo/here/cmd/here",
-  "ImportPath": "github.com/gobuffalo/here/cmd/here",
-  "Name": "main",
-  "Doc": "",
-  "Target": "$GOPATH/bin/here",
-  "Root": "$GOPATH",
-  "Match": [
-    "."
-  ],
-  "Stale": false,
-  "StaleReason": "",
-  "GoFiles": [
-    "main.go"
-  ],
-  "Imports": [
-    "fmt",
-    "github.com/gobuffalo/here",
-    "log",
-    "os",
-    "os/exec"
-  ],
-  "Deps": [
-    "bytes",
-    "context",
-    "encoding",
-    "encoding/base64",
-    "encoding/binary",
-    "encoding/json",
-    "errors",
-    "fmt",
-    "github.com/gobuffalo/here",
-    "internal/bytealg",
-    "internal/cpu",
-    "internal/fmtsort",
-    "internal/oserror",
-    "internal/poll",
-    "internal/race",
-    "internal/reflectlite",
-    "internal/syscall/unix",
-    "internal/testlog",
-    "io",
-    "log",
-    "math",
-    "math/bits",
-    "os",
-    "os/exec",
-    "path/filepath",
-    "reflect",
-    "regexp",
-    "regexp/syntax",
-    "runtime",
-    "runtime/internal/atomic",
-    "runtime/internal/math",
-    "runtime/internal/sys",
-    "sort",
-    "strconv",
-    "strings",
-    "sync",
-    "sync/atomic",
-    "syscall",
-    "time",
-    "unicode",
-    "unicode/utf16",
-    "unicode/utf8",
-    "unsafe"
-  ],
-  "TestGoFiles": null,
-  "TestImports": null,
-  "Module": {
-    "Path": "github.com/gobuffalo/here",
-    "Main": true,
-    "Dir": "$GOPATH/src/github.com/gobuffalo/here",
-    "GoMod": "$GOPATH/src/github.com/gobuffalo/here/go.mod",
-    "GoVersion": "1.13"
-  }
-}
-```
-
-#### By Package
-
-```bash
-$ here pkg github.com/gobuffalo/genny
-
-{
-  "Dir": "$GOPATH/pkg/mod/github.com/gobuffalo/genny@v0.4.1",
-  "ImportPath": "github.com/gobuffalo/genny",
-  "Name": "genny",
-  "Doc": "Package genny is a _framework_ for writing modular generators, it however, doesn't actually generate anything.",
-  "Target": "",
-  "Root": "$GOPATH/pkg/mod/github.com/gobuffalo/genny@v0.4.1",
-  "Match": [
-    "github.com/gobuffalo/genny"
-  ],
-  "Stale": true,
-  "StaleReason": "build ID mismatch",
-  "GoFiles": [
-    "confirm.go",
-    "dir.go",
-    "disk.go",
-    "dry_runner.go",
-    "events.go",
-    "file.go",
-    "force.go",
-    "generator.go",
-    "genny.go",
-    "group.go",
-    "helpers.go",
-    "logger.go",
-    "replacer.go",
-    "results.go",
-    "runner.go",
-    "step.go",
-    "transformer.go",
-    "version.go",
-    "wet_runner.go"
-  ],
-  "Imports": null,
-  "Deps": null,
-  "TestGoFiles": [
-    "dry_runner_test.go",
-    "file_test.go",
-    "force_test.go",
-    "generator_test.go",
-    "genny_test.go",
-    "group_test.go",
-    "helpers_test.go",
-    "replacer_test.go",
-    "results_test.go",
-    "runner_test.go",
-    "step_test.go",
-    "transformer_test.go",
-    "wet_runner_test.go"
-  ],
-  "TestImports": null,
-  "Module": {
-    "Path": "github.com/gobuffalo/genny",
-    "Main": false,
-    "Dir": "$GOPATH/pkg/mod/github.com/gobuffalo/genny@v0.4.1",
-    "GoMod": "$GOPATH/pkg/mod/cache/download/github.com/gobuffalo/genny/@v/v0.4.1.mod",
-    "GoVersion": "1.13"
-  }
-}
-```

vendor/github.com/gobuffalo/here/SHOULDERS.md

@@ -1,24 +0,0 @@
-# github.com/gobuffalo/here Stands on the Shoulders of Giants
-
-github.com/gobuffalo/here does not try to reinvent the wheel! Instead, it uses the already great wheels developed by the Go community and puts them all together in the best way possible. Without these giants, this project would not be possible. Please make sure to check them out and thank them for all of their hard work.
-
-Thank you to the following **GIANTS**:
-
-
-* [github.com/davecgh/go-spew](https://godoc.org/github.com/davecgh/go-spew)
-
-* [github.com/kr/pretty](https://godoc.org/github.com/kr/pretty)
-
-* [github.com/kr/pty](https://godoc.org/github.com/kr/pty)
-
-* [github.com/kr/text](https://godoc.org/github.com/kr/text)
-
-* [github.com/pmezard/go-difflib](https://godoc.org/github.com/pmezard/go-difflib)
-
-* [github.com/stretchr/objx](https://godoc.org/github.com/stretchr/objx)
-
-* [github.com/stretchr/testify](https://godoc.org/github.com/stretchr/testify)
-
-* [gopkg.in/check.v1](https://godoc.org/gopkg.in/check.v1)
-
-* [gopkg.in/yaml.v2](https://godoc.org/gopkg.in/yaml.v2)

vendor/github.com/gobuffalo/here/current.go

@@ -1,31 +0,0 @@
-package here
-
-import (
-	"path/filepath"
-)
-
-// Current returns the Info representing the current Go module
-func (h Here) Current() (Info, error) {
-	hp := &h
-	(&hp.curOnce).Do(func() {
-		b, err := run("go", "env", "GOMOD")
-		if err != nil {
-			hp.curErr = err
-			return
-		}
-		root := filepath.Dir(string(b))
-		i, err := h.Dir(root)
-		if err != nil {
-			hp.curErr = err
-			return
-		}
-		hp.current = i
-	})
-
-	return h.current, h.curErr
-}
-
-// Current returns the Info representing the current Go module
-func Current() (Info, error) {
-	return New().Current()
-}