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f6f974ec87
We might consider renaming `Item._fields` to `Item.fields` since other parts of beets use it as a replacement for `ITEM_KEYS`. See also #650.
95 lines
3.4 KiB
Python
95 lines
3.4 KiB
Python
# This file is part of beets.
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# Copyright 2013, Blemjhoo Tezoulbr <baobab@heresiarch.info>.
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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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""" Clears tag fields in media files."""
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import re
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import logging
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from beets.plugins import BeetsPlugin
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from beets.library import Item
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from beets.importer import action
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from beets.util import confit
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__author__ = 'baobab@heresiarch.info'
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__version__ = '0.10'
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class ZeroPlugin(BeetsPlugin):
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_instance = None
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_log = logging.getLogger('beets')
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def __init__(self):
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super(ZeroPlugin, self).__init__()
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# Listeners.
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self.register_listener('write', self.write_event)
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self.register_listener('import_task_choice',
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self.import_task_choice_event)
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self.config.add({
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'fields': [],
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})
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self.patterns = {}
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self.warned = False
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for f in self.config['fields'].as_str_seq():
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if f not in Item._fields.keys():
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self._log.error(u'[zero] invalid field: {0}'.format(f))
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else:
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try:
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self.patterns[f] = self.config[f].as_str_seq()
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except confit.NotFoundError:
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self.patterns[f] = [u'']
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def import_task_choice_event(self, session, task):
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"""Listen for import_task_choice event."""
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if task.choice_flag == action.ASIS and not self.warned:
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self._log.warn(u'[zero] cannot zero in \"as-is\" mode')
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self.warned = True
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# TODO request write in as-is mode
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@classmethod
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def match_patterns(cls, field, patterns):
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"""Check if field (as string) is matching any of the patterns in
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the list.
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"""
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for p in patterns:
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if re.search(p, unicode(field), flags=re.IGNORECASE):
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return True
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return False
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def write_event(self, item):
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"""Listen for write event."""
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if not self.patterns:
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self._log.warn(u'[zero] no fields, nothing to do')
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return
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for fn, patterns in self.patterns.items():
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try:
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fval = getattr(item, fn)
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except AttributeError:
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self._log.error(u'[zero] no such field: {0}'.format(fn))
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else:
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if not self.match_patterns(fval, patterns):
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self._log.debug(u'[zero] \"{0}\" ({1}) not match: {2}'
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.format(fval, fn,
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' '.join(patterns)))
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continue
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self._log.debug(u'[zero] \"{0}\" ({1}) match: {2}'
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.format(fval, fn, ' '.join(patterns)))
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new_val = None if fval is None else type(fval)()
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setattr(item, fn, new_val)
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self._log.debug(u'[zero] {0}={1}'
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.format(fn, getattr(item, fn)))
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