/usr/lib/python2.7/dist-packages/mpd.py is in python-mpd 0.3.0-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 | # python-mpd: Python MPD client library
# Copyright (C) 2008-2010 J. Alexander Treuman <jat@spatialrift.net>
#
# python-mpd is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# python-mpd is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with python-mpd. If not, see <http://www.gnu.org/licenses/>.
import socket
HELLO_PREFIX = "OK MPD "
ERROR_PREFIX = "ACK "
SUCCESS = "OK"
NEXT = "list_OK"
class MPDError(Exception):
pass
class ConnectionError(MPDError):
pass
class ProtocolError(MPDError):
pass
class CommandError(MPDError):
pass
class CommandListError(MPDError):
pass
class PendingCommandError(MPDError):
pass
class IteratingError(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 = {
# Status Commands
"clearerror": self._fetch_nothing,
"currentsong": self._fetch_object,
"idle": self._fetch_list,
"noidle": None,
"status": self._fetch_object,
"stats": self._fetch_object,
# Playback Option Commands
"consume": self._fetch_nothing,
"crossfade": self._fetch_nothing,
"mixrampdb": self._fetch_nothing,
"mixrampdelay": self._fetch_nothing,
"random": self._fetch_nothing,
"repeat": self._fetch_nothing,
"setvol": self._fetch_nothing,
"single": self._fetch_nothing,
"replay_gain_mode": self._fetch_nothing,
"replay_gain_status": self._fetch_item,
"volume": self._fetch_nothing,
# Playback Control Commands
"next": self._fetch_nothing,
"pause": self._fetch_nothing,
"play": self._fetch_nothing,
"playid": self._fetch_nothing,
"previous": self._fetch_nothing,
"seek": self._fetch_nothing,
"seekid": self._fetch_nothing,
"stop": self._fetch_nothing,
# Playlist Commands
"add": self._fetch_nothing,
"addid": self._fetch_item,
"clear": self._fetch_nothing,
"delete": self._fetch_nothing,
"deleteid": self._fetch_nothing,
"move": self._fetch_nothing,
"moveid": self._fetch_nothing,
"playlist": self._fetch_playlist,
"playlistfind": self._fetch_songs,
"playlistid": self._fetch_songs,
"playlistinfo": self._fetch_songs,
"playlistsearch": self._fetch_songs,
"plchanges": self._fetch_songs,
"plchangesposid": self._fetch_changes,
"shuffle": self._fetch_nothing,
"swap": self._fetch_nothing,
"swapid": self._fetch_nothing,
# Stored Playlist Commands
"listplaylist": self._fetch_list,
"listplaylistinfo": self._fetch_songs,
"listplaylists": self._fetch_playlists,
"load": self._fetch_nothing,
"playlistadd": self._fetch_nothing,
"playlistclear": self._fetch_nothing,
"playlistdelete": self._fetch_nothing,
"playlistmove": self._fetch_nothing,
"rename": self._fetch_nothing,
"rm": self._fetch_nothing,
"save": self._fetch_nothing,
# Database Commands
"count": self._fetch_object,
"find": self._fetch_songs,
"findadd": self._fetch_nothing,
"list": self._fetch_list,
"listall": self._fetch_database,
"listallinfo": self._fetch_database,
"lsinfo": self._fetch_database,
"search": self._fetch_songs,
"update": self._fetch_item,
"rescan": self._fetch_item,
# Sticker Commands
"sticker get": self._fetch_item,
"sticker set": self._fetch_nothing,
"sticker delete": self._fetch_nothing,
"sticker list": self._fetch_list,
"sticker find": self._fetch_songs,
# Connection Commands
"close": None,
"kill": None,
"password": self._fetch_nothing,
"ping": self._fetch_nothing,
# Audio Output Commands
"disableoutput": self._fetch_nothing,
"enableoutput": self._fetch_nothing,
"outputs": self._fetch_outputs,
# Reflection Commands
"commands": self._fetch_list,
"notcommands": self._fetch_list,
"tagtypes": self._fetch_list,
"urlhandlers": self._fetch_list,
"decoders": self._fetch_plugins,
}
def __getattr__(self, attr):
if attr.startswith("send_"):
command = attr.replace("send_", "", 1)
wrapper = self._send
elif attr.startswith("fetch_"):
command = attr.replace("fetch_", "", 1)
wrapper = self._fetch
else:
command = attr
wrapper = self._execute
if command not in self._commands:
command = command.replace("_", " ")
if command not in self._commands:
raise AttributeError("'%s' object has no attribute '%s'" %
(self.__class__.__name__, attr))
return lambda *args: wrapper(command, args)
def _send(self, command, args):
if self._command_list is not None:
raise CommandListError("Cannot use send_%s in a command list" %
command.replace(" ", "_"))
self._write_command(command, args)
retval = self._commands[command]
if retval is not None:
self._pending.append(command)
def _fetch(self, command, args=None):
if self._command_list is not None:
raise CommandListError("Cannot use fetch_%s in a command list" %
command.replace(" ", "_"))
if self._iterating:
raise IteratingError("Cannot use fetch_%s while iterating" %
command.replace(" ", "_"))
if not self._pending:
raise PendingCommandError("No pending commands to fetch")
if self._pending[0] != command:
raise PendingCommandError("'%s' is not the currently "
"pending command" % command)
del self._pending[0]
retval = self._commands[command]
if callable(retval):
return retval()
return retval
def _execute(self, command, args):
if self._iterating:
raise IteratingError("Cannot execute '%s' while iterating" %
command)
if self._pending:
raise PendingCommandError("Cannot execute '%s' with "
"pending commands" % command)
retval = self._commands[command]
if self._command_list is not None:
if not callable(retval):
raise CommandListError("'%s' not allowed in command list" %
command)
self._write_command(command, args)
self._command_list.append(retval)
else:
self._write_command(command, args)
if callable(retval):
return retval()
return retval
def _write_line(self, line):
self._wfile.write("%s\n" % line)
self._wfile.flush()
def _write_command(self, command, args=[]):
parts = [command]
for arg in args:
parts.append('"%s"' % escape(str(arg)))
self._write_line(" ".join(parts))
def _read_line(self):
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)
if self._command_list is not None:
if line == NEXT:
return
if line == SUCCESS:
raise ProtocolError("Got unexpected '%s'" % SUCCESS)
elif line == SUCCESS:
return
return line
def _read_pair(self, separator):
line = self._read_line()
if line is None:
return
pair = line.split(separator, 1)
if len(pair) < 2:
raise ProtocolError("Could not parse pair: '%s'" % line)
return pair
def _read_pairs(self, separator=": "):
pair = self._read_pair(separator)
while pair:
yield pair
pair = self._read_pair(separator)
def _read_list(self):
seen = None
for key, value in self._read_pairs():
if key != seen:
if seen is not None:
raise ProtocolError("Expected key '%s', got '%s'" %
(seen, key))
seen = key
yield value
def _read_playlist(self):
for key, value in self._read_pairs(":"):
yield value
def _read_objects(self, delimiters=[]):
obj = {}
for key, value in self._read_pairs():
key = key.lower()
if obj:
if key in delimiters:
yield obj
obj = {}
elif key in obj:
if not isinstance(obj[key], list):
obj[key] = [obj[key], value]
else:
obj[key].append(value)
continue
obj[key] = value
if obj:
yield obj
def _read_command_list(self):
try:
for retval in self._command_list:
yield retval()
finally:
self._command_list = None
self._fetch_nothing()
def _iterator_wrapper(self, iterator):
try:
for item in iterator:
yield item
finally:
self._iterating = False
def _wrap_iterator(self, iterator):
if not self.iterate:
return list(iterator)
self._iterating = True
return self._iterator_wrapper(iterator)
def _fetch_nothing(self):
line = self._read_line()
if line is not None:
raise ProtocolError("Got unexpected return value: '%s'" % line)
def _fetch_item(self):
pairs = list(self._read_pairs())
if len(pairs) != 1:
return
return pairs[0][1]
def _fetch_list(self):
return self._wrap_iterator(self._read_list())
def _fetch_playlist(self):
return self._wrap_iterator(self._read_playlist())
def _fetch_object(self):
objs = list(self._read_objects())
if not objs:
return {}
return objs[0]
def _fetch_objects(self, delimiters):
return self._wrap_iterator(self._read_objects(delimiters))
def _fetch_changes(self):
return self._fetch_objects(["cpos"])
def _fetch_songs(self):
return self._fetch_objects(["file"])
def _fetch_playlists(self):
return self._fetch_objects(["playlist"])
def _fetch_database(self):
return self._fetch_objects(["file", "directory", "playlist"])
def _fetch_outputs(self):
return self._fetch_objects(["outputid"])
def _fetch_plugins(self):
return self._fetch_objects(["plugin"])
def _fetch_command_list(self):
return self._wrap_iterator(self._read_command_list())
def _hello(self):
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)
self.mpd_version = line[len(HELLO_PREFIX):].strip()
def _reset(self):
self.mpd_version = None
self._iterating = False
self._pending = []
self._command_list = None
self._sock = None
self._rfile = _NotConnected()
self._wfile = _NotConnected()
def _connect_unix(self, path):
if not hasattr(socket, "AF_UNIX"):
raise ConnectionError("Unix domain sockets not supported "
"on this platform")
sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
sock.connect(path)
return sock
def _connect_tcp(self, host, port):
try:
flags = socket.AI_ADDRCONFIG
except AttributeError:
flags = 0
err = None
for res in socket.getaddrinfo(host, port, socket.AF_UNSPEC,
socket.SOCK_STREAM, socket.IPPROTO_TCP,
flags):
af, socktype, proto, canonname, sa = res
sock = None
try:
sock = socket.socket(af, socktype, proto)
sock.connect(sa)
return sock
except socket.error, err:
if sock is not None:
sock.close()
if err is not None:
raise err
else:
raise ConnectionError("getaddrinfo returns an empty list")
def connect(self, host, port):
if self._sock is not None:
raise ConnectionError("Already connected")
if host.startswith("/"):
self._sock = self._connect_unix(host)
else:
self._sock = self._connect_tcp(host, port)
self._rfile = self._sock.makefile("rb")
self._wfile = self._sock.makefile("wb")
try:
self._hello()
except:
self.disconnect()
raise
def disconnect(self):
self._rfile.close()
self._wfile.close()
self._sock.close()
self._reset()
def fileno(self):
if self._sock is None:
raise ConnectionError("Not connected")
return self._sock.fileno()
def command_list_ok_begin(self):
if self._command_list is not None:
raise CommandListError("Already in command list")
if self._iterating:
raise IteratingError("Cannot begin command list while iterating")
if self._pending:
raise PendingCommandError("Cannot begin command list "
"with pending commands")
self._write_command("command_list_ok_begin")
self._command_list = []
def command_list_end(self):
if self._command_list is None:
raise CommandListError("Not in command list")
if self._iterating:
raise IteratingError("Already iterating over a command list")
self._write_command("command_list_end")
return self._fetch_command_list()
def escape(text):
return text.replace("\\", "\\\\").replace('"', '\\"')
# vim: set expandtab shiftwidth=4 softtabstop=4 textwidth=79:
|