Changed logic of ScanDirectory() func.

cmd/dwelling-files/main.go

@@ -100,7 +100,7 @@ func Index(w http.ResponseWriter, r *http.Request) {
 		path += "/"
 	}
 
-	entries, stats, err := files.ScanDirectory(*directoryPath+path, path)
+	entries, stats, err := files.ScanDirectory(*directoryPath, path)
 	if err != nil {
 		log.Println("Error directory scan:", err)
 		http.Error(w, "Not found", http.StatusNotFound)

pkg/files/files.go

@@ -22,8 +22,14 @@ type DirEntry struct {
 	Size     string
 }
 
-func ScanDirectory(path, urlBase string) (entries []DirEntry, stats DirStat, err error) {
+// ScanDirectory returns entries of directory which is located by its relative
-	dir, err := os.ReadDir(path)
+// path within a base directory.
+//
+// rel path should start/end with a / symbol.
+func ScanDirectory(base, rel string) (entries []DirEntry, stats DirStat, err error) {
+	abs := base + rel
+
+	dir, err := os.ReadDir(abs)
 	if err != nil {
 		return
 	}
@@ -37,7 +43,7 @@ func ScanDirectory(path, urlBase string) (entries []DirEntry, stats DirStat, err
 
 		var isDirLink bool
 		if entry.Mode().Type()&os.ModeSymlink != 0 {
-			if slp, err := filepath.EvalSymlinks(filepath.Join(path, entry.Name())); err == nil {
+			if slp, err := filepath.EvalSymlinks(filepath.Join(abs, entry.Name())); err == nil {
 				lStat, _ := os.Lstat(slp)
 				isDirLink = lStat.IsDir()
 			}
@@ -54,7 +60,7 @@ func ScanDirectory(path, urlBase string) (entries []DirEntry, stats DirStat, err
 		} else {
 			fileEntries = append(fileEntries, DirEntry{
 				Name:     entry.Name(),
-				Link:     "/file" + urlBase + url.PathEscape(entry.Name()),
+				Link:     "/file" + rel + url.PathEscape(entry.Name()),
 				Datetime: entry.ModTime(),
 				Size:     convertFileSize(entry.Size()),
 			})