Implement fixes for my favorite pet peeves in Vanilla (#714)

* Ignore Visual Studio's cache.

* If only one of (ARTIST, ALBUMARTIST) is present, populate the other.
This is only natural and most applications that implement media library population do this.

* On completion of the queue, rewind to the beginning of the queue, so that a subsequent Play command will play the whole queue again.

* Correct <plurals> values according to the best practices and add a CLDR rules link for translators to look for their language's specific informaiton.

.gitignore

@@ -37,3 +37,6 @@ proguard/
 *.iml
 out
 .settings/
+
+# Visual Studio 2015 cache/options directory
+.vs/

res/values/translatable.xml

@@ -82,24 +82,35 @@ THE SOFTWARE.
 	<string name="go_home">Home directory</string>
 	<string name="jumping_to_song">Song is already in queue, jumping…</string>
 
+	<!--
+		As a developer, you should always supply "one" and "other"
+		strings. Your translators will know which strings are actually
+		needed for their language. Always include %d in "one" because
+		translators will need to use %d for languages where "one"
+		doesn't mean 1 (as explained above).
+
+		Translators should use http://unicode.org/reports/tr35/tr35-numbers.html#Language_Plural_Rules and
+		http://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html, Type cardinal,
+		to see which categories apply to integer numbers in their languages
+	-->
 	<plurals name="playing">
-		<item quantity="one">1 track playing.</item>
+		<item quantity="one">%d track playing.</item>
 		<item quantity="other">%d tracks playing.</item>
 	</plurals>
 	<plurals name="enqueued">
-		<item quantity="one">1 track enqueued.</item>
+		<item quantity="one">%d track enqueued.</item>
 		<item quantity="other">%d tracks enqueued.</item>
 	</plurals>
 	<plurals name="added_to_playlist">
-		<item quantity="one">1 track added to playlist %2$s.</item>
+		<item quantity="one">%1$d track added to playlist %2$s.</item>
 		<item quantity="other">%1$d tracks added to playlist %2$s.</item>
 	</plurals>
 	<plurals name="removed_from_playlist">
-		<item quantity="one">1 track removed from playlist %2$s.</item>
+		<item quantity="one">%1$d track removed from playlist %2$s.</item>
 		<item quantity="other">%1$d tracks removed from playlist %2$s.</item>
 	</plurals>
 	<plurals name="deleted">
-		<item quantity="one">1 track deleted.</item>
+		<item quantity="one">%d track deleted.</item>
 		<item quantity="other">%d tracks deleted.</item>
 	</plurals>
 	<string name="delete_file_failed">Failed to delete %s.</string>

src/ch/blinkenlights/android/medialibrary/MediaMetadataExtractor.java

@@ -292,8 +292,8 @@ public class MediaMetadataExtractor extends HashMap<String, ArrayList<String>> {
 			Log.v("VanillaMusic", "Error creating fis for "+path+": "+e);
 		}
 
-		// Check if this is an useable audio file
+		// Check if this is a usable audio file
-		if (nativelyReadable == false ||
+		if (!nativelyReadable ||
 		    mediaTags.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_AUDIO) == null ||
 		    mediaTags.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO) != null ||
 		    mediaTags.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION) == null) {
@@ -339,7 +339,7 @@ public class MediaMetadataExtractor extends HashMap<String, ArrayList<String>> {
 		convertNumericGenre();
 
 		// We consider this a media file if it has some common tags OR
-		// if bastp was able to parse it (which is stricter than Androids own parser)
+		// if bastp was able to parse it (which is stricter than Android's own parser)
 		mIsMediaFile = (containsKey(TITLE) || containsKey(ALBUM) || containsKey(ARTIST) || !bastpType.equals(""));
 
 		mediaTags.release();
@@ -369,6 +369,14 @@ public class MediaMetadataExtractor extends HashMap<String, ArrayList<String>> {
 			}
 		}
 
+		// If only one of (ARTIST, ALBUMARTIST) is present, populate the other
+		if (!containsKey(ARTIST) && containsKey(ALBUMARTIST)) {
+			put(ARTIST, get(ALBUMARTIST));
+		}
+		if (containsKey(ARTIST) && !containsKey(ALBUMARTIST)) {
+			put(ALBUMARTIST, get(ARTIST));
+		}
+
 		// Try to guess YEAR from date field if only DATE was specified
 		// We expect it to match \d{4}
 		if (!containsKey(YEAR) && bastp.containsKey("DATE")) {

src/ch/blinkenlights/android/vanilla/PlaybackService.java

@@ -176,7 +176,7 @@ public final class PlaybackService extends Service
 	 */
 	public static final String ACTION_CYCLE_REPEAT = "ch.blinkenlights.android.vanilla.CYCLE_REPEAT";
 	/**
-	 * Pause music and hide the notifcation.
+	 * Pause music and hide the notification.
 	 */
 	public static final String ACTION_CLOSE_NOTIFICATION = "ch.blinkenlights.android.vanilla.CLOSE_NOTIFICATION";
 	/**
@@ -1420,7 +1420,7 @@ public final class PlaybackService extends Service
 
 			/* Automatically advance to next song IF we are currently playing or already did skip something
 			 * This will stop after skipping 10 songs to avoid endless loops (queue full of broken stuff */
-			if(mTimeline.isEndOfQueue() == false && getSong(1) != null && (playing || (mSkipBroken > 0 && mSkipBroken < 10))) {
+			if(!mTimeline.isEndOfQueue() && getSong(1) != null && (playing || (mSkipBroken > 0 && mSkipBroken < 10))) {
 				mSkipBroken++;
 				mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_SKIP_BROKEN_SONG, getTimelinePosition(), 0), 1000);
 			}
@@ -1443,9 +1443,10 @@ public final class PlaybackService extends Service
 		} else if (finishAction(mState) == SongTimeline.FINISH_STOP_CURRENT) {
 			unsetFlag(FLAG_PLAYING);
 			setCurrentSong(+1);
-		} else if (mTimeline.isEndOfQueue()) {
-			unsetFlag(FLAG_PLAYING);
 		} else {
+			if (mTimeline.isEndOfQueue()) {
+				unsetFlag(FLAG_PLAYING);
+			}
 			setCurrentSong(+1);
 		}
 	}