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a6e5201ff3
This is 'the big one', which touches every file so that it all conforms to the given standard.
75 lines
2.7 KiB
Python
75 lines
2.7 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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"""Uses user-specified rewriting rules to canonicalize names for path
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formats.
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"""
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import re
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from collections import defaultdict
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from beets import library, ui
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from beets.plugins import BeetsPlugin
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def rewriter(field, rules):
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"""Create a template field function that rewrites the given field
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with the given rewriting rules. ``rules`` must be a list of
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(pattern, replacement) pairs.
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"""
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def fieldfunc(item):
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value = item._values_fixed[field]
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for pattern, replacement in rules:
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if pattern.match(value.lower()):
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# Rewrite activated.
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return replacement
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# Not activated; return original value.
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return value
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return fieldfunc
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class RewritePlugin(BeetsPlugin):
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def __init__(self):
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super().__init__()
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self.config.add({})
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# Gather all the rewrite rules for each field.
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rules = defaultdict(list)
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for key, view in self.config.items():
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value = view.as_str()
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try:
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fieldname, pattern = key.split(None, 1)
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except ValueError:
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raise ui.UserError("invalid rewrite specification")
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if fieldname not in library.Item._fields:
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raise ui.UserError(
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"invalid field name (%s) in rewriter" % fieldname
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)
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self._log.debug("adding template field {0}", key)
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pattern = re.compile(pattern.lower())
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rules[fieldname].append((pattern, value))
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if fieldname == "artist":
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# Special case for the artist field: apply the same
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# rewrite for "albumartist" as well.
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rules["albumartist"].append((pattern, value))
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# Replace each template field with the new rewriter function.
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for fieldname, fieldrules in rules.items():
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getter = rewriter(fieldname, fieldrules)
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self.template_fields[fieldname] = getter
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if fieldname in library.Album._fields:
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self.album_template_fields[fieldname] = getter
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