Labrys 1111074dc3 Update beets to 1.3.18:
Dependencies:
* PyYAML 3.11
* Unidecode 0.4.19
* beets 1.3.18
* colorama 0.3.7
* enum34 1.1.6
* jellyfish 0.5.4
* munkres 1.0.7
* musicbrainzngs 0.6
* mutagen 1.32
2016-06-06 12:08:52 -04:00

76 lines
2.8 KiB
Python

# -*- coding: utf-8 -*-
# This file is part of beets.
# Copyright 2016, Adrian Sampson.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
"""Uses user-specified rewriting rules to canonicalize names for path
formats.
"""
from __future__ import division, absolute_import, print_function
import re
from collections import defaultdict
from beets.plugins import BeetsPlugin
from beets import ui
from beets import library
def rewriter(field, rules):
"""Create a template field function that rewrites the given field
with the given rewriting rules. ``rules`` must be a list of
(pattern, replacement) pairs.
"""
def fieldfunc(item):
value = item._values_fixed[field]
for pattern, replacement in rules:
if pattern.match(value.lower()):
# Rewrite activated.
return replacement
# Not activated; return original value.
return value
return fieldfunc
class RewritePlugin(BeetsPlugin):
def __init__(self):
super(RewritePlugin, self).__init__()
self.config.add({})
# Gather all the rewrite rules for each field.
rules = defaultdict(list)
for key, view in self.config.items():
value = view.get(unicode)
try:
fieldname, pattern = key.split(None, 1)
except ValueError:
raise ui.UserError(u"invalid rewrite specification")
if fieldname not in library.Item._fields:
raise ui.UserError(u"invalid field name (%s) in rewriter" %
fieldname)
self._log.debug(u'adding template field {0}', key)
pattern = re.compile(pattern.lower())
rules[fieldname].append((pattern, value))
if fieldname == 'artist':
# Special case for the artist field: apply the same
# rewrite for "albumartist" as well.
rules['albumartist'].append((pattern, value))
# Replace each template field with the new rewriter function.
for fieldname, fieldrules in rules.iteritems():
getter = rewriter(fieldname, fieldrules)
self.template_fields[fieldname] = getter
if fieldname in library.Album._fields:
self.album_template_fields[fieldname] = getter