X-Git-Url: http://git.kaliko.me/?p=python-musicpd.git;a=blobdiff_plain;f=mpd.py;h=3a5d8675ba195f617bd8c0e37880da071e4c8bf2;hp=a5e1877e5fcfa45f156a982122980163b9bf4335;hb=c465a35a2b587e14f3f86be3d983d5b074ed375d;hpb=451513fe311d9957467c1ca17c7883bf3e8017b9 diff --git a/mpd.py b/mpd.py index a5e1877..3a5d867 100644 --- a/mpd.py +++ b/mpd.py @@ -26,6 +26,9 @@ NEXT = "list_OK" class MPDError(Exception): pass +class ConnectionError(MPDError): + pass + class ProtocolError(MPDError): pass @@ -36,93 +39,104 @@ class CommandListError(MPDError): pass +class _NotConnected(object): + def __getattr__(self, attr): + return self._dummy + + def _dummy(*args): + raise ConnectionError("Not connected") + class MPDClient(object): def __init__(self): self.iterate = False self._reset() self._commands = { - # Admin Commands - "disableoutput": self._getnone, - "enableoutput": self._getnone, - "kill": None, - "update": self._getitem, - # Informational Commands + # Status Commands + "clearerror": self._getnone, + "currentsong": self._getobject, "status": self._getobject, "stats": self._getobject, - "outputs": self._getoutputs, - "commands": self._getlist, - "notcommands": self._getlist, - "tagtypes": self._getlist, - "urlhandlers": self._getlist, - # Database Commands - "find": self._getsongs, - "list": self._getlist, - "listall": self._getdatabase, - "listallinfo": self._getdatabase, - "lsinfo": self._getdatabase, - "search": self._getsongs, - "count": self._getobject, + # Playback Option Commands + "crossfade": self._getnone, + "random": self._getnone, + "repeat": self._getnone, + "setvol": self._getnone, + "volume": self._getnone, + # Playback Control Commands + "next": self._getnone, + "pause": self._getnone, + "play": self._getnone, + "playid": self._getnone, + "previous": self._getnone, + "seek": self._getnone, + "seekid": self._getnone, + "stop": self._getnone, # Playlist Commands "add": self._getnone, "addid": self._getitem, "clear": self._getnone, - "currentsong": self._getobject, "delete": self._getnone, "deleteid": self._getnone, - "load": self._getnone, - "rename": self._getnone, "move": self._getnone, "moveid": self._getnone, "playlist": self._getplaylist, - "playlistinfo": self._getsongs, + "playlistfind": self._getsongs, "playlistid": self._getsongs, + "playlistinfo": self._getsongs, + "playlistsearch": self._getsongs, "plchanges": self._getsongs, "plchangesposid": self._getchanges, - "rm": self._getnone, - "save": self._getnone, "shuffle": self._getnone, "swap": self._getnone, "swapid": self._getnone, + # Stored Playlist Commands "listplaylist": self._getlist, "listplaylistinfo": self._getsongs, + "listplaylists": self._getplaylists, + "load": self._getnone, "playlistadd": self._getnone, "playlistclear": self._getnone, "playlistdelete": self._getnone, "playlistmove": self._getnone, - "playlistfind": self._getsongs, - "playlistsearch": self._getsongs, - # Playback Commands - "crossfade": self._getnone, - "next": self._getnone, - "pause": self._getnone, - "play": self._getnone, - "playid": self._getnone, - "previous": self._getnone, - "random": self._getnone, - "repeat": self._getnone, - "seek": self._getnone, - "seekid": self._getnone, - "setvol": self._getnone, - "stop": self._getnone, - "volume": self._getnone, - # Miscellaneous Commands - "clearerror": self._getnone, + "rename": self._getnone, + "rm": self._getnone, + "save": self._getnone, + # Database Commands + "count": self._getobject, + "find": self._getsongs, + "list": self._getlist, + "listall": self._getdatabase, + "listallinfo": self._getdatabase, + "lsinfo": self._getdatabase, + "search": self._getsongs, + "update": self._getitem, + # Connection Commands "close": None, + "kill": None, "password": self._getnone, "ping": self._getnone, + # Audio Output Commands + "disableoutput": self._getnone, + "enableoutput": self._getnone, + "outputs": self._getoutputs, + # Reflection Commands + "commands": self._getlist, + "notcommands": self._getlist, + "tagtypes": self._getlist, + "urlhandlers": self._getlist, } def __getattr__(self, attr): try: retval = self._commands[attr] except KeyError: - raise AttributeError, "'%s' object has no attribute '%s'" % \ - (self.__class__.__name__, attr) + raise AttributeError("'%s' object has no attribute '%s'" % + (self.__class__.__name__, attr)) return lambda *args: self._docommand(attr, args, retval) def _docommand(self, command, args, retval): if self._commandlist is not None and not callable(retval): - raise CommandListError, "%s not allowed in command list" % command + raise CommandListError("%s not allowed in command list" % command) self._writecommand(command, args) if self._commandlist is None: if callable(retval): @@ -131,8 +145,8 @@ class MPDClient(object): self._commandlist.append(retval) def _writeline(self, line): - self._sockfile.write("%s\n" % line) - self._sockfile.flush() + self._wfile.write("%s\n" % line) + self._wfile.flush() def _writecommand(self, command, args=[]): parts = [command] @@ -141,15 +155,18 @@ class MPDClient(object): self._writeline(" ".join(parts)) def _readline(self): - line = self._sockfile.readline().rstrip("\n") + line = self._rfile.readline() + if not line.endswith("\n"): + raise ConnectionError("Connection lost while reading line") + line = line.rstrip("\n") if line.startswith(ERROR_PREFIX): error = line[len(ERROR_PREFIX):].strip() - raise CommandError, error + raise CommandError(error) if self._commandlist is not None: if line == NEXT: return if line == SUCCESS: - raise ProtocolError, "Got unexpected '%s'" % SUCCESS + raise ProtocolError("Got unexpected '%s'" % SUCCESS) elif line == SUCCESS: return return line @@ -160,7 +177,7 @@ class MPDClient(object): return item = line.split(separator, 1) if len(item) < 2: - raise ProtocolError, "Could not parse item: '%s'" % line + raise ProtocolError("Could not parse item: '%s'" % line) return item def _readitems(self, separator=": "): @@ -175,8 +192,8 @@ class MPDClient(object): for key, value in self._readitems(): if key != seen: if seen is not None: - raise ProtocolError, "Expected key '%s', got '%s'" % \ - (seen, key) + raise ProtocolError("Expected key '%s', got '%s'" % + (seen, key)) seen = key yield value raise StopIteration @@ -220,12 +237,12 @@ class MPDClient(object): def _getnone(self): line = self._readline() if line is not None: - raise ProtocolError, "Got unexpected return value: '%s'" % line + raise ProtocolError("Got unexpected return value: '%s'" % line) def _getitem(self): items = list(self._readitems()) if len(items) != 1: - raise ProtocolError, "Expected 1 item, got %i" % len(items) + return return items[0][1] def _getlist(self): @@ -246,6 +263,9 @@ class MPDClient(object): def _getsongs(self): return self._getobjects(["file"]) + def _getplaylists(self): + return self._getobjects(["playlist"]) + def _getdatabase(self): return self._getobjects(["file", "directory", "playlist"]) @@ -259,36 +279,67 @@ class MPDClient(object): return self._wrapiterator(self._readcommandlist()) def _hello(self): - line = self._sockfile.readline().rstrip("\n") + line = self._rfile.readline() + if not line.endswith("\n"): + raise ConnectionError("Connection lost while reading MPD hello") + line = line.rstrip("\n") if not line.startswith(HELLO_PREFIX): - raise ProtocolError, "Got invalid MPD hello: '%s'" % line + raise ProtocolError("Got invalid MPD hello: '%s'" % line) self.mpd_version = line[len(HELLO_PREFIX):].strip() def _reset(self): self.mpd_version = None self._commandlist = None - self._sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) - self._sockfile = self._sock.makefile("rb+") + self._sock = None + self._rfile = _NotConnected() + self._wfile = _NotConnected() def connect(self, host, port): - self.disconnect() - self._sock.connect((host, port)) - self._hello() + if self._sock: + raise ConnectionError("Already connected") + msg = "getaddrinfo returns an empty list" + try: + flags = socket.AI_ADDRCONFIG + except AttributeError: + flags = 0 + for res in socket.getaddrinfo(host, port, socket.AF_UNSPEC, + socket.SOCK_STREAM, socket.IPPROTO_TCP, + flags): + af, socktype, proto, canonname, sa = res + try: + self._sock = socket.socket(af, socktype, proto) + self._sock.connect(sa) + except socket.error, msg: + if self._sock: + self._sock.close() + self._sock = None + continue + break + if not self._sock: + raise socket.error(msg) + self._rfile = self._sock.makefile("rb") + self._wfile = self._sock.makefile("wb") + try: + self._hello() + except: + self.disconnect() + raise def disconnect(self): - self._sockfile.close() + self._rfile.close() + self._wfile.close() self._sock.close() self._reset() def command_list_ok_begin(self): if self._commandlist is not None: - raise CommandListError, "Already in command list" + raise CommandListError("Already in command list") self._writecommand("command_list_ok_begin") self._commandlist = [] def command_list_end(self): if self._commandlist is None: - raise CommandListError, "Not in command list" + raise CommandListError("Not in command list") self._writecommand("command_list_end") return self._getcommandlist()