+# -*- coding: utf-8 -*-
# SPDX-FileCopyrightText: 2012-2023 kaliko <kaliko@azylum.org>
# SPDX-FileCopyrightText: 2021 Wonko der Verständige <wonko@hanstool.org>
# SPDX-FileCopyrightText: 2019 Naglis Jonaitis <naglis@mailbox.org>
# SPDX-FileCopyrightText: 2019 Bart Van Loon <bbb@bbbart.be>
# SPDX-FileCopyrightText: 2008-2010 J. Alexander Treuman <jat@spatialrift.net>
# SPDX-License-Identifier: LGPL-3.0-or-later
-"""python-musicpd: Python Music Player Daemon client library"""
+"""Python Music Player Daemon client library"""
import socket
ERROR_PREFIX = "ACK "
SUCCESS = "OK"
NEXT = "list_OK"
+#: Module version
VERSION = '0.9.0b0'
#: Seconds before a connection attempt times out
-#: (overriden by MPD_TIMEOUT env. var.)
+#: (overriden by :envvar:`MPD_TIMEOUT` env. var.)
CONNECTION_TIMEOUT = 30
#: Socket timeout in second (Default is None for no timeout)
SOCKET_TIMEOUT = None
class MPDError(Exception):
- pass
+ """Main musicpd Exception"""
class ConnectionError(MPDError):
- pass
+ """Fatal Connection Error, cannot recover from it."""
class ProtocolError(MPDError):
- pass
+ """Fatal Protocol Error, cannot recover from it"""
class CommandError(MPDError):
- pass
+ """Malformed command, socket should be fine, can reuse it"""
class CommandListError(MPDError):
- pass
+ """"""
class PendingCommandError(MPDError):
- pass
+ """"""
class IteratingError(MPDError):
- pass
+ """"""
class Range:
def __init__(self, tpl):
self.tpl = tpl
+ self.lower = ''
+ self.upper = ''
self._check()
def __str__(self):
- if len(self.tpl) == 0:
- return ':'
- if len(self.tpl) == 1:
- return '{0}:'.format(self.tpl[0])
- return '{0[0]}:{0[1]}'.format(self.tpl)
+ return f'{self.lower}:{self.upper}'
def __repr__(self):
- return 'Range({0})'.format(self.tpl)
+ return f'Range({self.tpl})'
+
+ def _check_element(self, item):
+ if item is None or item == '':
+ return ''
+ try:
+ return str(int(item))
+ except (TypeError, ValueError) as err:
+ raise CommandError(f'Not an integer: "{item}"') from err
+ return item
def _check(self):
if not isinstance(self.tpl, tuple):
raise CommandError('Wrong type, provide a tuple')
- if len(self.tpl) not in [0, 1, 2]:
- raise CommandError('length not in [0, 1, 2]')
- for index in self.tpl:
- try:
- index = int(index)
- except (TypeError, ValueError) as err:
- raise CommandError('Not a tuple of int') from err
+ if len(self.tpl) == 0:
+ return
+ if len(self.tpl) == 1:
+ self.lower = self._check_element(self.tpl[0])
+ return
+ if len(self.tpl) != 2:
+ raise CommandError('Range wrong size (0, 1 or 2 allowed)')
+ self.lower = self._check_element(self.tpl[0])
+ self.upper = self._check_element(self.tpl[1])
+ if self.lower == '' and self.upper != '':
+ raise CommandError(f'Integer expected to start the range: {self.tpl}')
+ if self.upper.isdigit() and self.lower.isdigit():
+ if int(self.lower) > int(self.upper):
+ raise CommandError(f'Wrong range: {self.lower} > {self.upper}')
class _NotConnected:
class MPDClient:
- """MPDClient instance will look for ``MPD_HOST``/``MPD_PORT``/``XDG_RUNTIME_DIR`` environment
- variables and set instance attribute ``host``, ``port`` and ``pwd``
- accordingly. Regarding ``MPD_HOST`` format to expose password refer
- MPD client manual :manpage:`mpc (1)`.
+ """MPDClient instance will look for :envvar:`MPD_HOST`/:envvar:`MPD_PORT`/:envvar:`XDG_RUNTIME_DIR` environment
+ variables and set instance attribute :py:attr:`host`, :py:attr:`port` and :py:obj:`pwd`
+ accordingly.
- Then :py:obj:`musicpd.MPDClient.connect` will use ``host`` and ``port`` as defaults if not provided as args.
+ Then :py:obj:`musicpd.MPDClient.connect` will use :py:obj:`host` and
+ :py:obj:`port` as defaults if not provided as args.
- Cf. :py:obj:`musicpd.MPDClient.connect` for details.
+ Regarding :envvar:`MPD_HOST` format to expose password refer this module
+ documentation or MPD client manual :manpage:`mpc (1)`.
>>> from os import environ
>>> environ['MPD_HOST'] = 'pass@mpdhost'
True
>>> cli.connect() # will use host/port as set in MPD_HOST/MPD_PORT
- :ivar str host: host used with the current connection
- :ivar str,int port: port used with the current connection
- :ivar str pwd: password detected in ``MPD_HOST`` environment variable
+ .. note::
- .. warning:: Instance attribute host/port/pwd
+ default host:
+ * use :envvar:`MPD_HOST` environment variable if set, extract password if present,
+ * else use :envvar:`XDG_RUNTIME_DIR` to looks for an existing file in ``${XDG_RUNTIME_DIR:-/run/}/mpd/socket``
+ * else set host to ``localhost``
- While :py:attr:`musicpd.MPDClient().host` and
- :py:attr:`musicpd.MPDClient().port` keep track of current connection
- host and port, :py:attr:`musicpd.MPDClient().pwd` is set once with
+ default port:
+ * use :envvar:`MPD_PORT` environment variable is set
+ * else use ``6600``
+
+ .. warning:: **Instance attribute host/port/pwd**
+
+ While :py:attr:`musicpd.MPDClient.host` and
+ :py:attr:`musicpd.MPDClient.port` keep track of current connection
+ host and port, :py:attr:`musicpd.MPDClient.pwd` is set once with
password extracted from environment variable.
- Calling :py:meth:`musicpd.MPDClient().password()` with a new password
- won't update :py:attr:`musicpd.MPDClient().pwd` value.
+ Calling :py:meth:`password` methode with a new password
+ won't update :py:attr:`musicpd.MPDClient.pwd` value.
- Moreover, :py:attr:`musicpd.MPDClient().pwd` is only an helper attribute
- exposing password extracted from ``MPD_HOST`` environment variable, it
+ Moreover, :py:attr:`musicpd.MPDClient.pwd` is only an helper attribute
+ exposing password extracted from :envvar:`MPD_HOST` environment variable, it
will not be used as default value for the :py:meth:`password` method
"""
"readmessages": self._fetch_messages,
"sendmessage": self._fetch_nothing,
}
+ #: host used with the current connection (:py:obj:`str`)
+ self.host = None
+ #: password detected in :envvar:`MPD_HOST` environment variable (:py:obj:`str`)
+ self.pwd = None
+ #: port used with the current connection (:py:obj:`int`, :py:obj:`str`)
+ self.port = None
self._get_envvars()
def _get_envvars(self):
"""
- Retrieve MPD env. var. to overrides "localhost:6600"
- Use MPD_HOST/MPD_PORT if set
- else use MPD_HOST=${XDG_RUNTIME_DIR:-/run/}/mpd/socket if file exists
+ Retrieve MPD env. var. to overrides default "localhost:6600"
"""
+ # Set some defaults
self.host = 'localhost'
- self.pwd = None
self.port = os.getenv('MPD_PORT', '6600')
_host = os.getenv('MPD_HOST', '')
if _host:
def connect(self, host=None, port=None):
"""Connects the MPD server
- :param str host: hostname, IP or FQDN (defaults to `localhost` or socket, see below for details)
- :param port: port number (defaults to 6600)
+ :param str host: hostname, IP or FQDN (defaults to *localhost* or socket)
+ :param port: port number (defaults to *6600*)
:type port: str or int
- The connect method honors MPD_HOST/MPD_PORT environment variables.
+ If host/port are :py:obj:`None` the socket uses :py:attr:`host`/:py:attr:`port`
+ attributes as defaults. Cf. :py:obj:`MPDClient` for the logic behind default host/port.
- The underlying socket also honors MPD_TIMEOUT environment variable
+ The underlying socket also honors :envvar:`MPD_TIMEOUT` environment variable
and defaults to :py:obj:`musicpd.CONNECTION_TIMEOUT` (connect command only).
If you want to have a timeout for each command once you got connected,
set its value in :py:obj:`MPDClient.socket_timeout` (in second) or at
module level in :py:obj:`musicpd.SOCKET_TIMEOUT`.
-
- .. note:: Default host/port
-
- If host evaluate to :py:obj:`False`
- * use ``MPD_HOST`` environment variable if set, extract password if present,
- * else looks for an existing file in ``${XDG_RUNTIME_DIR:-/run/}/mpd/socket``
- * else set host to ``localhost``
-
- If port evaluate to :py:obj:`False`
- * if ``MPD_PORT`` environment variable is set, use it for port
- * else use ``6600``
"""
if not host:
host = self.host
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