Prefer UTF-8 fields when present

cmd/torrent/metainfo.go

@@ -77,6 +77,7 @@ func pprintMetainfo(metainfo *metainfo.MetaInfo, flags pprintMetainfoFlags) erro
 	}
 	d := map[string]interface{}{
 		"Name":         info.Name,
+		"Name.Utf8":    info.NameUtf8,
 		"NumPieces":    info.NumPieces(),
 		"PieceLength":  info.PieceLength,
 		"InfoHash":     metainfo.HashInfoBytes().HexString(),

metainfo/fileinfo.go

@@ -6,14 +6,14 @@ import "strings"
 type FileInfo struct {
 	Length   int64    `bencode:"length"` // BEP3
 	Path     []string `bencode:"path"`   // BEP3
-	PathUTF8 []string `bencode:"path.utf-8,omitempty"`
+	PathUtf8 []string `bencode:"path.utf-8,omitempty"`
 }
 
 func (fi *FileInfo) DisplayPath(info *Info) string {
 	if info.IsDir() {
-		return strings.Join(fi.Path, "/")
+		return strings.Join(fi.BestPath(), "/")
 	} else {
-		return info.Name
+		return info.BestName()
 	}
 }
 
@@ -26,3 +26,10 @@ func (me FileInfo) Offset(info *Info) (ret int64) {
 	}
 	panic("not found")
 }
+
+func (fi FileInfo) BestPath() []string {
+	if len(fi.PathUtf8) != 0 {
+		return fi.PathUtf8
+	}
+	return fi.Path
+}

metainfo/info.go

@@ -153,3 +153,10 @@ func (info *Info) UpvertedFiles() []FileInfo {
 func (info *Info) Piece(index int) Piece {
 	return Piece{info, pieceIndex(index)}
 }
+
+func (info Info) BestName() string {
+	if info.NameUtf8 != "" {
+		return info.NameUtf8
+	}
+	return info.Name
+}

t.go

@@ -211,23 +211,13 @@ func (t *Torrent) initFiles() {
 	var offset int64
 	t.files = new([]*File)
 	for _, fi := range t.info.UpvertedFiles() {
-		var path []string
-		if len(fi.PathUTF8) != 0 {
-			path = fi.PathUTF8
-		} else {
-			path = fi.Path
-		}
-		dp := t.info.Name
-		if len(fi.Path) != 0 {
-			dp = strings.Join(fi.Path, "/")
-		}
 		*t.files = append(*t.files, &File{
 			t,
-			strings.Join(append([]string{t.info.Name}, path...), "/"),
+			strings.Join(append([]string{t.info.BestName()}, fi.BestPath()...), "/"),
 			offset,
 			fi.Length,
 			fi,
-			dp,
+			fi.DisplayPath(t.info),
 			PiecePriorityNone,
 		})
 		offset += fi.Length