ENH: implement cleandb feature

rss2email/command.py

@@ -65,6 +65,23 @@ def run(feeds, args):
     finally:
         feeds.save()
 
+def cleandb(feeds, args):
+    "Keep only last seen entries in the database"
+    args.send = False
+    if not args.index:
+        args.index = range(len(feeds))
+    try:
+        for index in args.index:
+            feed = feeds.index(index)
+            _LOG.info('resetting feed {}'.format(feed))
+            feed.reset()
+            try:
+                feed.run(send=args.send)
+            except _error.RSS2EmailError as e:
+                e.log()
+    finally:
+        feeds.save()
+
 def list(feeds, args):
     "List all the feeds in the database"
     for i,feed in enumerate(feeds):

rss2email/main.py

@@ -88,6 +88,13 @@ def run(*args, **kwargs):
         'email', nargs='?',
         help='target email for the new feed')
 
+    cleandb_parser = subparsers.add_parser(
+        'cleandb', help=_command.cleandb.__doc__.splitlines()[0])
+    cleandb_parser.set_defaults(func=_command.cleandb)
+    cleandb_parser.add_argument(
+        'index', nargs='*',
+        help='feeds to clean in the database (defaults to cleaning all feeds)')
+
     run_parser = subparsers.add_parser(
         'run', help=_command.run.__doc__.splitlines()[0])
     run_parser.set_defaults(func=_command.run)