curds: Add exception handling for invalid tracks

Users might have images or ripping logs mixed in with their tracks, so
let's make sure we don't crash if we try to scan one of these.

Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

.gitignore

@@ -2,3 +2,4 @@
 *.ogg
 *.coverage
 *.ui~
+*.txt

curds/tags.py

@@ -74,7 +74,10 @@ class Track(Tag):
                           self.tracknumber, self.discnumber))
 
     def lookup(path):
-        return Tag.lookup(Track(path), "new-track")
+        try:
+            return Tag.lookup(Track(path), "new-track")
+        except Exception as e:
+            return None
 
 
 def save():

curds/test_tags_track.py

@@ -62,6 +62,10 @@ class TestTrackTag(unittest.TestCase):
         self.assertEqual(tags.Track(join(test_tracks, "09 - Test {Disc 02}.ogg")).discnumber,    2)
         self.assertEqual(tags.Track(join(test_tracks, "10 - Test {Disc 20}.ogg")).discnumber,   20)
 
+    def test_track_exceptiddon(self):
+        self.assertIsNone(tags.Track.lookup(os.path.join(test_tracks, "text.txt")))
+        self.assertIsNone(tags.Track.lookup(os.path.join(test_tracks, "test.txt")))
+
     def on_new_track(self, track):
         self.cb_track = track
 

trier/generate_tracks.py

@@ -50,6 +50,8 @@ generate_track(60, "Test Album/11 - Test Track 11.ogg", { "Title" : "Test Track
                                                           "album" : "Test Album 11",
                                                           "discnumber"  : "1/1",
                                                           "tracknumber" : "11/100" })
+with open(os.path.join(trier, "Test Album/text.txt"), 'w') as f:
+    f.write("Test Text")
 
 # Create a giant library for testing
 for artistno in range(1, 26):