photoprism/pkg/fs/walk.go

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package fs
import (
"os"
"path/filepath"
)
// SkipWalk returns true if the file or directory should be skipped in godirwalk.Walk()
func SkipWalk(fileName string, isDir, isSymlink bool, done Done, ignore *IgnoreList) (skip bool, result error) {
isDone := done[fileName].Exists()
isIgnored := ignore.Ignore(fileName)
if isSymlink {
// Symlink points to directory?
if link, err := os.Stat(fileName); err == nil && link.IsDir() {
// Skip directories.
skip = true
resolved, err := filepath.EvalSymlinks(fileName)
if err != nil || isIgnored || isDone || done[resolved].Exists() {
result = filepath.SkipDir
} else {
// Flag the symlink target as processed.
done[resolved] = Found
}
} else if err != nil {
// Also skip on error.
skip = true
result = filepath.SkipDir
}
} else if isDir {
skip = true
if isIgnored || isDone {
// Don't traverse directories if they are hidden or already done...
result = filepath.SkipDir
}
} else if isIgnored || isDone {
// Skip files that are hidden or already done...
skip = true
}
if skip {
done[fileName] = Found
}
return skip, result
}