45 lines
953 B
Go
45 lines
953 B
Go
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package godirwalk
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import "sort"
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type scanner interface {
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Dirent() (*Dirent, error)
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Err() error
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Name() string
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Scan() bool
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}
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// sortedScanner enumerates through a directory's contents after reading the
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// entire directory and sorting the entries by name. Used by walk to simplify
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// its implementation.
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type sortedScanner struct {
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dd []*Dirent
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de *Dirent
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}
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func newSortedScanner(osPathname string, scratchBuffer []byte) (*sortedScanner, error) {
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deChildren, err := ReadDirents(osPathname, scratchBuffer)
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if err != nil {
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return nil, err
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}
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sort.Sort(deChildren)
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return &sortedScanner{dd: deChildren}, nil
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}
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func (d *sortedScanner) Err() error {
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d.dd, d.de = nil, nil
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return nil
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}
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func (d *sortedScanner) Dirent() (*Dirent, error) { return d.de, nil }
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func (d *sortedScanner) Name() string { return d.de.name }
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func (d *sortedScanner) Scan() bool {
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if len(d.dd) > 0 {
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d.de, d.dd = d.dd[0], d.dd[1:]
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return true
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}
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return false
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}
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