Add drop option to FtInTitlePlugin

beetsplug/ftintitle.py

@@ -48,7 +48,7 @@ def contains_feat(title):
     ))
 
 
-def update_metadata(item, feat_part):
+def update_metadata(item, feat_part, drop_feat):
     """Choose how to add new artists to the title and set the new
     metadata. Also, print out messages about any changes that are made.
     """
@@ -60,14 +60,14 @@ def update_metadata(item, feat_part):
         item.artist_sort, _ = split_on_feat(item.artist_sort)
 
     # Only update the title if it does not already contain a featured
-    # artist.
-    if not contains_feat(item.title):
+    # artist and if we do not drop featuring information.
+    if not drop_feat and not contains_feat(item.title):
         new_title = u"{0} feat. {1}".format(item.title, feat_part)
         ui.print_(u'title: {0} -> {1}'.format(item.title, new_title))
         item.title = new_title
 
 
-def ft_in_title(item):
+def ft_in_title(item, drop_feat):
     """Look for featured artists in the item's artist fields and move
     them to the title.
     """
@@ -104,24 +104,42 @@ def ft_in_title(item):
 
         # If we have a featuring artist, move it to the title.
         if feat_part:
-            update_metadata(item, feat_part)
+            update_metadata(item, feat_part, drop_feat)
         else:
             ui.print_(u'no featuring artists found')
 
         ui.print_()
 
 
 class FtInTitlePlugin(BeetsPlugin):
+    def __init__(self):
+        super(FtInTitlePlugin, self).__init__()
+
+        self.config.add({
+            'drop_feat': False
+        })
+
+        self._command = ui.Subcommand(
+            'ftintitle',
+            help='move featured artists to the title field')
+
+        self._command.parser.add_option(
+            '-d', '--drop', dest='drop_feat',
+            action='store_true', default=False,
+            help='drop featuring from artists and ignore title update')
+
     def commands(self):
-        cmd = ui.Subcommand('ftintitle',
-                            help='move featured artists to the title field')
 
         def func(lib, opts, args):
+            self.config.set_args(opts)
+            drop_feat = self.config['drop_feat'].get(bool)
             write = config['import']['write'].get(bool)
+
             for item in lib.items(ui.decargs(args)):
-                ft_in_title(item)
+                ft_in_title(item, drop_feat)
                 item.store()
                 if write:
                     item.try_write()
-        cmd.func = func
-        return [cmd]
+
+        self._command.func = func
+        return [self._command]

docs/plugins/ftintitle.rst

@@ -17,4 +17,7 @@ To use the plugin, just enable it and run the command::
 The query is optional; if it's left off, the transformation will be applied to
 your entire collection.
 
+The ``-d`` option drop only featuring information from the ``artist`` field. The
+``title`` field will not be updated.
+
 .. _MusicBrainz style: http://musicbrainz.org/doc/Style