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129 lines
3.8 KiB
Python
129 lines
3.8 KiB
Python
# This file is part of beets.
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# Copyright 2015, Adrian Sampson.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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"""Updates an MPD index whenever the library is changed.
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Put something like the following in your config.yaml to configure:
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mpd:
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host: localhost
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port: 6600
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password: seekrit
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"""
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from __future__ import print_function
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from beets.plugins import BeetsPlugin
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import os
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import socket
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from beets import config
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# Global variable so that mpdupdate can detect database changes and run only
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# once before beets exits.
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database_changed = False
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# No need to introduce a dependency on an MPD library for such a
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# simple use case. Here's a simple socket abstraction to make things
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# easier.
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class BufferedSocket(object):
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"""Socket abstraction that allows reading by line."""
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def __init__(self, host, port, sep='\n'):
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if host[0] in ['/', '~']:
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self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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self.sock.connect(os.path.expanduser(host))
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else:
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.sock.connect((host, port))
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self.buf = ''
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self.sep = sep
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def readline(self):
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while self.sep not in self.buf:
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data = self.sock.recv(1024)
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if not data:
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break
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self.buf += data
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if '\n' in self.buf:
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res, self.buf = self.buf.split(self.sep, 1)
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return res + self.sep
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else:
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return ''
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def send(self, data):
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self.sock.send(data)
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def close(self):
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self.sock.close()
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def update_mpd(host='localhost', port=6600, password=None):
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"""Sends the "update" command to the MPD server indicated,
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possibly authenticating with a password first.
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"""
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print('Updating MPD database...')
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s = BufferedSocket(host, port)
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resp = s.readline()
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if 'OK MPD' not in resp:
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print('MPD connection failed:', repr(resp))
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return
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if password:
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s.send('password "%s"\n' % password)
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resp = s.readline()
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if 'OK' not in resp:
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print('Authentication failed:', repr(resp))
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s.send('close\n')
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s.close()
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return
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s.send('update\n')
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resp = s.readline()
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if 'updating_db' not in resp:
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print('Update failed:', repr(resp))
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s.send('close\n')
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s.close()
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print('... updated.')
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class MPDUpdatePlugin(BeetsPlugin):
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def __init__(self):
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super(MPDUpdatePlugin, self).__init__()
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config['mpd'].add({
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'host': u'localhost',
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'port': 6600,
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'password': u'',
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})
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# For backwards compatibility, use any values from the
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# plugin-specific "mpdupdate" section.
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for key in config['mpd'].keys():
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if self.config[key].exists():
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config['mpd'][key] = self.config[key].get()
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@MPDUpdatePlugin.listen('database_change')
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def handle_change(lib=None):
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global database_changed
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database_changed = True
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@MPDUpdatePlugin.listen('cli_exit')
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def update(lib=None):
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if database_changed:
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update_mpd(
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config['mpd']['host'].get(unicode),
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config['mpd']['port'].get(int),
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config['mpd']['password'].get(unicode),
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)
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