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a6e5201ff3
This is 'the big one', which touches every file so that it all conforms to the given standard.
129 lines
4 KiB
Python
129 lines
4 KiB
Python
# This file is part of beets.
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# Copyright 2016, 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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import os
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import socket
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from beets import config
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from beets.plugins import BeetsPlugin
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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:
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"""Socket abstraction that allows reading by line."""
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def __init__(self, host, port, sep=b"\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 = b""
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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 self.sep 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 b""
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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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class MPDUpdatePlugin(BeetsPlugin):
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def __init__(self):
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super().__init__()
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config["mpd"].add(
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{
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"host": os.environ.get("MPD_HOST", "localhost"),
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"port": int(os.environ.get("MPD_PORT", 6600)),
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"password": "",
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}
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)
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config["mpd"]["password"].redact = True
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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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self.register_listener("database_change", self.db_change)
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def db_change(self, lib, model):
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self.register_listener("cli_exit", self.update)
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def update(self, lib):
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self.update_mpd(
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config["mpd"]["host"].as_str(),
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config["mpd"]["port"].get(int),
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config["mpd"]["password"].as_str(),
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)
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def update_mpd(self, 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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self._log.info("Updating MPD database...")
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try:
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s = BufferedSocket(host, port)
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except OSError as e:
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self._log.warning("MPD connection failed: {0}", str(e.strerror))
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return
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resp = s.readline()
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if b"OK MPD" not in resp:
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self._log.warning("MPD connection failed: {0!r}", resp)
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return
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if password:
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s.send(b'password "%s"\n' % password.encode("utf8"))
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resp = s.readline()
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if b"OK" not in resp:
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self._log.warning("Authentication failed: {0!r}", resp)
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s.send(b"close\n")
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s.close()
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return
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s.send(b"update\n")
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resp = s.readline()
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if b"updating_db" not in resp:
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self._log.warning("Update failed: {0!r}", resp)
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s.send(b"close\n")
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s.close()
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self._log.info("Database updated.")
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