Fix multiple id3v2.4 genres appearing as one big concatenated genre

scanner/metadata/taglib.go

@@ -32,13 +32,11 @@ func (e *taglibExtractor) extractMetadata(filePath string) (*Tags, error) {
 	}
 
 	tags := NewTags(filePath, parsedTags, map[string][]string{
-		"title":    {"_track", "titlesort"},
-		"album":    {"_album", "albumsort"},
-		"artist":   {"_artist", "artistsort"},
-		"genre":    {"_genre"},
-		"date":     {"_year"},
-		"track":    {"_track"},
-		"duration": {"length"},
+		"title":  {"_track", "titlesort"},
+		"album":  {"_album", "albumsort"},
+		"artist": {"_artist", "artistsort"},
+		"date":   {"_year"},
+		"track":  {"_track"},
 	})
 
 	return tags, nil

scanner/metadata/taglib/taglib_parser.cpp

@@ -23,7 +23,7 @@ int taglib_read(const char *filename, unsigned long id) {
 
   // Add audio properties to the tags
   const TagLib::AudioProperties *props(f.audioProperties());
-  go_map_put_int(id, (char *)"length", props->length());
+  go_map_put_int(id, (char *)"duration", props->length());
   go_map_put_int(id, (char *)"bitrate", props->bitrate());
 
   TagLib::PropertyMap tags = f.file()->properties();
@@ -40,9 +40,6 @@ int taglib_read(const char *filename, unsigned long id) {
     if (!basic->album().isEmpty()) {
       tags.insert("_album", basic->album());
     }
-    if (!basic->genre().isEmpty()) {
-      tags.insert("_genre", basic->genre());
-    }
     if (basic->year() > 0) {
       tags.insert("_year", TagLib::String::number(basic->year()));
     }
@@ -64,7 +61,6 @@ int taglib_read(const char *filename, unsigned long id) {
     }
   }
 
-  // Get only the first occurrence of each tag (for now)
   for (TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end();
        ++i) {
     for (TagLib::StringList::ConstIterator j = i->second.begin();

scanner/metadata/taglib_test.go

@@ -19,7 +19,7 @@ var _ = Describe("taglibExtractor", func() {
 			Expect(m.Artist()).To(Equal("Artist"))
 			Expect(m.AlbumArtist()).To(Equal("Album Artist"))
 			Expect(m.Compilation()).To(BeTrue())
-			Expect(m.Genres()).To(ConsistOf("Rock", "Rock"))
+			Expect(m.Genres()).To(ConsistOf("Rock"))
 			Expect(m.Year()).To(Equal(2014))
 			n, t := m.TrackNumber()
 			Expect(n).To(Equal(2))