76 lines
2.0 KiB
Go
76 lines
2.0 KiB
Go
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// Copyright 2021 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package convert
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import (
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"database/sql"
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"fmt"
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"reflect"
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"strconv"
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)
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// AsString converts interface as string
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func AsString(src interface{}) string {
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switch v := src.(type) {
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case string:
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return v
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case []byte:
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return string(v)
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case *sql.NullString:
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return v.String
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case *sql.NullInt32:
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return fmt.Sprintf("%d", v.Int32)
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case *sql.NullInt64:
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return fmt.Sprintf("%d", v.Int64)
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}
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rv := reflect.ValueOf(src)
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switch rv.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return strconv.FormatInt(rv.Int(), 10)
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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return strconv.FormatUint(rv.Uint(), 10)
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case reflect.Float64:
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return strconv.FormatFloat(rv.Float(), 'g', -1, 64)
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case reflect.Float32:
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return strconv.FormatFloat(rv.Float(), 'g', -1, 32)
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case reflect.Bool:
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return strconv.FormatBool(rv.Bool())
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}
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return fmt.Sprintf("%v", src)
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}
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// AsBytes converts interface as bytes
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func AsBytes(src interface{}) ([]byte, bool) {
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switch t := src.(type) {
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case []byte:
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return t, true
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case *sql.NullString:
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if !t.Valid {
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return nil, true
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}
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return []byte(t.String), true
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case *sql.RawBytes:
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return *t, true
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}
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rv := reflect.ValueOf(src)
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switch rv.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return strconv.AppendInt(nil, rv.Int(), 10), true
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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return strconv.AppendUint(nil, rv.Uint(), 10), true
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case reflect.Float32:
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return strconv.AppendFloat(nil, rv.Float(), 'g', -1, 32), true
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case reflect.Float64:
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return strconv.AppendFloat(nil, rv.Float(), 'g', -1, 64), true
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case reflect.Bool:
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return strconv.AppendBool(nil, rv.Bool()), true
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case reflect.String:
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return []byte(rv.String()), true
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}
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return nil, false
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}
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