121 lines
3.2 KiB
Go
121 lines
3.2 KiB
Go
package scanner
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import (
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"context"
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"io/ioutil"
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"os"
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"path/filepath"
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"time"
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"github.com/deluan/navidrome/consts"
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"github.com/deluan/navidrome/log"
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"github.com/deluan/navidrome/utils"
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)
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type (
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dirMapValue struct {
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modTime time.Time
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hasImages bool
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hasPlaylist bool
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hasAudioFiles bool
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}
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dirMap = map[string]dirMapValue
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)
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func loadDirTree(ctx context.Context, rootFolder string) (dirMap, error) {
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newMap := make(dirMap)
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err := loadMap(ctx, rootFolder, rootFolder, newMap)
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if err != nil {
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log.Error(ctx, "Error loading directory tree", err)
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}
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return newMap, err
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}
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func loadMap(ctx context.Context, rootPath string, currentFolder string, dirMap dirMap) error {
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children, dirMapValue, err := loadDir(ctx, currentFolder)
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if err != nil {
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return err
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}
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for _, c := range children {
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err := loadMap(ctx, rootPath, c, dirMap)
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if err != nil {
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return err
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}
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}
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dir := filepath.Clean(currentFolder)
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dirMap[dir] = dirMapValue
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return nil
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}
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func loadDir(ctx context.Context, dirPath string) (children []string, info dirMapValue, err error) {
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dirInfo, err := os.Stat(dirPath)
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if err != nil {
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log.Error(ctx, "Error stating dir", "path", dirPath, err)
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return
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}
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info.modTime = dirInfo.ModTime()
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files, err := ioutil.ReadDir(dirPath)
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if err != nil {
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log.Error(ctx, "Error reading dir", "path", dirPath, err)
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return
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}
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for _, f := range files {
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isDir, err := isDirOrSymlinkToDir(dirPath, f)
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// Skip invalid symlinks
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if err != nil {
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continue
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}
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if isDir && !isDirIgnored(dirPath, f) && isDirReadable(dirPath, f) {
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children = append(children, filepath.Join(dirPath, f.Name()))
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} else {
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if f.ModTime().After(info.modTime) {
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info.modTime = f.ModTime()
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}
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info.hasImages = info.hasImages || utils.IsImageFile(f.Name())
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info.hasPlaylist = info.hasPlaylist || utils.IsPlaylist(f.Name())
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info.hasAudioFiles = info.hasAudioFiles || utils.IsAudioFile(f.Name())
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}
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}
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return
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}
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// isDirOrSymlinkToDir returns true if and only if the dirInfo represents a file
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// system directory, or a symbolic link to a directory. Note that if the dirInfo
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// is not a directory but is a symbolic link, this method will resolve by
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// sending a request to the operating system to follow the symbolic link.
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// Copied from github.com/karrick/godirwalk
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func isDirOrSymlinkToDir(baseDir string, dirInfo os.FileInfo) (bool, error) {
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if dirInfo.IsDir() {
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return true, nil
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}
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if dirInfo.Mode()&os.ModeSymlink == 0 {
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return false, nil
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}
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// Does this symlink point to a directory?
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dirInfo, err := os.Stat(filepath.Join(baseDir, dirInfo.Name()))
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if err != nil {
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return false, err
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}
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return dirInfo.IsDir(), nil
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}
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// isDirIgnored returns true if the directory represented by dirInfo contains an
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// `ignore` file (named after consts.SkipScanFile)
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func isDirIgnored(baseDir string, dirInfo os.FileInfo) bool {
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_, err := os.Stat(filepath.Join(baseDir, dirInfo.Name(), consts.SkipScanFile))
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return err == nil
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}
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// isDirReadable returns true if the directory represented by dirInfo is readable
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func isDirReadable(baseDir string, dirInfo os.FileInfo) bool {
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path := filepath.Join(baseDir, dirInfo.Name())
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res, err := utils.IsDirReadable(path)
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if !res {
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log.Debug("Warning: Skipping unreadable directory", "path", path, err)
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}
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return res
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}
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