1 # -*- coding: utf-8 -*-
2 # Copyright (c) 2013, 2014 Jack Kaliko <kaliko@azylum.org>
4 # This file is part of sima
6 # sima is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 3 of the License, or
9 # (at your option) any later version.
11 # sima is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with sima. If not, see <http://www.gnu.org/licenses/>.
20 """MPD client for Sima
22 This client is built above python-musicpd a fork of python-mpd
24 # pylint: disable=C0111
26 # standard library import
27 from difflib import get_close_matches
28 from itertools import dropwhile
29 from select import select
31 # third parties components
33 from musicpd import (MPDClient, MPDError, CommandError)
34 except ImportError as err:
35 from sys import exit as sexit
36 print('ERROR: missing python-musicpd?\n{0}'.format(err))
40 from .lib.player import Player
41 from .lib.track import Track
42 from .lib.meta import Album
43 from .lib.simastr import SimaStr
44 from .utils.leven import levenshtein_ratio
47 class PlayerError(Exception):
48 """Fatal error in poller."""
50 class PlayerCommandError(PlayerError):
53 PlayerUnHandledError = MPDError # pylint: disable=C0103
56 def blacklist(artist=False, album=False, track=False):
57 #pylint: disable=C0111,W0212
58 field = (artist, album, track)
60 def wrapper(*args, **kwargs):
61 if not args[0].database:
62 return func(*args, **kwargs)
64 boolgen = (bl for bl in field)
65 bl_fun = (cls.database.get_bl_artist,
66 cls.database.get_bl_album,
67 cls.database.get_bl_track,)
68 #bl_getter = next(fn for fn, bl in zip(bl_fun, boolgen) if bl is True)
69 bl_getter = next(dropwhile(lambda _: not next(boolgen), bl_fun))
70 #cls.log.debug('using {0} as bl filter'.format(bl_getter.__name__))
72 for elem in func(*args, **kwargs):
73 if bl_getter(elem, add_not=True):
74 cls.log.debug('Blacklisted "{0}"'.format(elem))
76 if track and cls.database.get_bl_album(elem, add_not=True):
77 # filter album as well in track mode
78 # (artist have already been)
79 cls.log.debug('Blacklisted alb. "{0.album}"'.format(elem))
86 class PlayerClient(Player):
90 _fetch_item single str
91 _fetch_object single dict
92 _fetch_list list of str
93 _fetch_playlist list of str
94 _fetch_changes list of dict
95 _fetch_database list of dict
96 _fetch_songs list of dict, especially tracks
98 TODO: handle exception in command not going through _client_wrapper() (ie.
101 database = None # sima database (history, blacklist)
103 def __init__(self, host="localhost", port="6600", password=None):
105 self._comm = self._args = None
106 self._mpd = host, port, password
107 self._client = MPDClient()
108 self._client.iterate = True
111 def __getattr__(self, attr):
113 wrapper = self._execute
114 return lambda *args: wrapper(command, args)
116 def _execute(self, command, args):
117 self._write_command(command, args)
118 return self._client_wrapper()
120 def _write_command(self, command, args=None):
124 self._args.append(arg)
126 def _client_wrapper(self):
127 func = self._client.__getattr__(self._comm)
129 ans = func(*self._args)
130 # WARNING: MPDError is an ancestor class of # CommandError
131 except CommandError as err:
132 raise PlayerCommandError('MPD command error: %s' % err)
133 except (MPDError, IOError) as err:
134 raise PlayerError(err)
135 return self._track_format(ans)
137 def _track_format(self, ans):
139 unicode_obj = ["idle", "listplaylist", "list", "sticker list",
140 "commands", "notcommands", "tagtypes", "urlhandlers",]
142 # TODO: ain't working for "sticker find" and "sticker list"
143 tracks_listing = ["playlistfind", "playlistid", "playlistinfo",
144 "playlistsearch", "plchanges", "listplaylistinfo", "find",
145 "search", "sticker find",]
146 track_obj = ['currentsong']
147 if self._comm in tracks_listing + track_obj:
148 # pylint: disable=w0142
149 if isinstance(ans, list):
150 return [Track(**track) for track in ans]
151 elif isinstance(ans, dict):
155 def __skipped_track(self, old_curr):
156 if (self.state == 'stop'
157 or not hasattr(old_curr, 'id')
158 or not hasattr(self.current, 'id')):
160 return self.current.id != old_curr.id # pylint: disable=no-member
162 def _flush_cache(self):
164 Both flushes and instantiates _cache
166 if isinstance(self._cache, dict):
167 self.log.info('Player: Flushing cache!')
169 self.log.info('Player: Initialising cache!')
173 self._cache['artists'] = frozenset(self._client.list('artist'))
175 @blacklist(track=True)
176 def find_track(self, artist, title=None):
177 #return getattr(self, 'find')('artist', artist, 'title', title)
179 return self.find('artist', artist, 'title', title)
180 return self.find('artist', artist)
182 @blacklist(track=True)
183 def fuzzy_find_track(self, artist, title):
184 # Retrieve all tracks from artist
185 all_tracks = self.find('artist', artist)
186 # Get all titles (filter missing titles set to 'None')
187 all_artist_titles = frozenset([tr.title for tr in all_tracks
188 if tr.title is not None])
189 match = get_close_matches(title, all_artist_titles, 50, 0.78)
193 leven = levenshtein_ratio(title.lower(), title_.lower())
196 elif leven >= 0.79: # PARAM
197 self.log.debug('title: "%s" should match "%s" (lr=%1.3f)' %
198 (title_, title, leven))
200 self.log.debug('title: "%s" does not match "%s" (lr=%1.3f)' %
201 (title_, title, leven))
203 return self.find('artist', artist, 'title', title_)
205 @blacklist(artist=True)
206 def fuzzy_find_artist(self, art):
208 Controls presence of artist in music library.
209 Crosschecking artist names with SimaStr objects / difflib / levenshtein
211 TODO: proceed crosschecking even when an artist matched !!!
212 Not because we found "The Doors" as "The Doors" that there is no
213 remaining entries as "Doors" :/
214 not straight forward, need probably heavy refactoring.
216 matching_artists = list()
217 artist = SimaStr(art)
219 # Check against the actual string in artist list
220 if artist.orig in self.artists:
221 self.log.debug('found exact match for "%s"' % artist)
223 # Then proceed with fuzzy matching if got nothing
224 match = get_close_matches(artist.orig, self.artists, 50, 0.73)
227 self.log.debug('found close match for "%s": %s' %
228 (artist, '/'.join(match)))
229 # Does not perform fuzzy matching on short and single word strings
230 # Only lowercased comparison
231 if ' ' not in artist.orig and len(artist) < 8:
232 for fuzz_art in match:
233 # Regular string comparison SimaStr().lower is regular string
234 if artist.lower() == fuzz_art.lower():
235 matching_artists.append(fuzz_art)
236 self.log.debug('"%s" matches "%s".' % (fuzz_art, artist))
237 return matching_artists
238 for fuzz_art in match:
239 # Regular string comparison SimaStr().lower is regular string
240 if artist.lower() == fuzz_art.lower():
241 matching_artists.append(fuzz_art)
242 self.log.debug('"%s" matches "%s".' % (fuzz_art, artist))
243 return matching_artists
244 # SimaStr string __eq__ (not regular string comparison here)
245 if artist == fuzz_art:
246 matching_artists.append(fuzz_art)
247 self.log.info('"%s" quite probably matches "%s" (SimaStr)' %
250 self.log.debug('FZZZ: "%s" does not match "%s"' %
252 return matching_artists
254 def find_album(self, artist, album):
256 Special wrapper around album search:
257 Album lookup is made through AlbumArtist/Album instead of Artist/Album
259 alb_art_search = self.find('albumartist', artist, 'album', album)
261 return alb_art_search
262 return self.find('artist', artist, 'album', album)
264 @blacklist(album=True)
265 def find_albums(self, artist):
267 Fetch all albums for "AlbumArtist" == artist
268 Filter albums returned for "artist" == artist since MPD returns any
269 album containing at least a single track for artist
272 kwalbart = {'albumartist':artist, 'artist':artist}
273 for album in self.list('album', 'albumartist', artist):
274 if album not in albums:
275 albums.append(Album(name=album, **kwalbart))
276 for album in self.list('album', 'artist', artist):
277 album_trks = [trk for trk in self.find('album', album)]
278 if 'Various Artists' in [tr.albumartist for tr in album_trks]:
279 self.log.debug('Discarding {0} ("Various Artists" set)'.format(album))
281 arts = set([trk.artist for trk in album_trks])
282 if len(set(arts)) < 2: # TODO: better heuristic, use a ratio instead
283 if album not in albums:
284 albums.append(Album(name=album, albumartist=artist))
285 elif album and album not in albums:
286 self.log.debug('"{0}" probably not an album of "{1}"'.format(
287 album, artist) + '({0})'.format('/'.join(arts)))
293 self.send_idle('database', 'playlist', 'player', 'options')
294 select([self._client], [], [], 60)
295 ret = self.fetch_idle()
296 if self.__skipped_track(curr):
297 ret.append('skipped')
298 if 'database' in ret:
301 except (MPDError, IOError) as err:
302 raise PlayerError("Couldn't init idle: %s" % err)
305 """Clean blocking event (idle) and pending commands
307 if 'idle' in self._client._pending:
308 self._client.noidle()
309 elif self._client._pending:
310 self.log.warning('pending commands: {}'.format(self._client._pending))
312 def remove(self, position=0):
313 self.delete(position)
315 def add(self, track):
316 """Overriding MPD's add method to accept add signature with a Track
318 self._client.add(track.file)
322 return self._cache.get('artists')
326 return str(self.status().get('state'))
330 return self.currentsong()
336 return [trk for trk in plst if int(trk.pos) > int(self.current.pos)]
341 Override deprecated MPD playlist command
343 return self.playlistinfo()
346 host, port, password = self._mpd
349 self._client.connect(host, port)
351 # Catch socket errors
352 except IOError as err:
353 raise PlayerError('Could not connect to "%s:%s": %s' %
354 (host, port, err.strerror))
356 # Catch all other possible errors
357 # ConnectionError and ProtocolError are always fatal. Others may not
358 # be, but we don't know how to handle them here, so treat them as if
359 # they are instead of ignoring them.
360 except MPDError as err:
361 raise PlayerError('Could not connect to "%s:%s": %s' %
366 self._client.password(password)
368 # Catch errors with the password command (e.g., wrong password)
369 except CommandError as err:
370 raise PlayerError("Could not connect to '%s': "
371 "password command failed: %s" %
374 # Catch all other possible errors
375 except (MPDError, IOError) as err:
376 raise PlayerError("Could not connect to '%s': "
377 "error with password command: %s" %
379 # Controls we have sufficient rights
380 needed_cmds = ['status', 'stats', 'add', 'find', \
381 'search', 'currentsong', 'ping']
383 available_cmd = self._client.commands()
384 for nddcmd in needed_cmds:
385 if nddcmd not in available_cmd:
387 raise PlayerError('Could connect to "%s", '
388 'but command "%s" not available' %
392 def disconnect(self):
393 # Try to tell MPD we're closing the connection first
395 self._client.noidle()
397 # If that fails, don't worry, just ignore it and disconnect
398 except (MPDError, IOError):
401 self._client.disconnect()
402 # Disconnecting failed, so use a new client object instead
403 # This should never happen. If it does, something is seriously broken,
404 # and the client object shouldn't be trusted to be re-used.
405 except (MPDError, IOError):
406 self._client = MPDClient()
409 # vim: ai ts=4 sw=4 sts=4 expandtab