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# -*- coding: utf-8 -*-
#
# Picard, the next-generation MusicBrainz tagger
# Copyright (C) 2006-2007 Lukáš Lalinský
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
import re
import unicodedata
from zmusic.picard.util import format_time, load_release_type_scores
MULTI_VALUED_JOINER = '; '
class Metadata(object):
"""List of metadata items with dict-like access."""
__weights = [
('title', 22),
('artist', 6),
('album', 12),
('tracknumber', 6),
('totaltracks', 5),
]
def __init__(self):
super(Metadata, self).__init__()
self._items = {}
self.images = []
self.length = 0
def add_image(self, mime, data, filename=None):
self.images.append((mime, data, filename))
def __repr__(self):
return repr(self._items)
def copy(self, other):
self._items = {}
for key, values in other.rawitems():
self._items[key] = values[:]
self.images = other.images[:]
self.length = other.length
def update(self, other):
for name, values in other.rawitems():
self._items[name] = values[:]
if other.images:
self.images = other.images[:]
if other.length:
self.length = other.length
def clear(self):
self._items = {}
self.images = []
self.length = 0
def __get(self, name, default=None):
values = self._items.get(name, None)
if values:
if len(values) > 1:
return MULTI_VALUED_JOINER.join(map(str, values))
else:
return values[0]
else:
return default
def __set(self, name, values):
if not isinstance(values, list):
values = [values]
values = [v for v in values if v or v == 0]
if len(values):
self._items[name] = values
def getall(self, name):
return self._items.get(name, [])
def get(self, name, default=None):
return self.__get(name, default)
def __getitem__(self, name):
return self.__get(name, u'')
def set(self, name, value):
self.__set(name, value)
def __setitem__(self, name, value):
self.__set(name, value)
def add(self, name, value):
if value or value == 0:
self._items.setdefault(name, []).append(value)
def add_unique(self, name, value):
if value not in self.getall(name):
self.add(name, value)
def keys(self):
return self._items.keys()
def items(self):
for name, values in self._items.items():
for value in values:
yield name, value
def items(self):
"""Returns the metadata items.
>>> m.items()
[("key1", "value1"), ("key1", "value2"), ("key2", "value3")]
"""
return list(self.items())
def rawitems(self):
"""Returns the metadata items.
>>> m.rawitems()
[("key1", ["value1", "value2"]), ("key2", ["value3"])]
"""
return self._items.items()
def __contains__(self, name):
return name in self._items
def __delitem__(self, name):
del self._items[name]
def apply_func(self, func):
new = Metadata()
for key, values in self.rawitems():
if not key.startswith("~"):
new[key] = map(func, values)
self.update(new)
def strip_whitespace(self):
"""Strip leading/trailing whitespace.
>>> m = Metadata()
>>> m["foo"] = " bar "
>>> m["foo"]
" bar "
>>> m.strip_whitespace()
>>> m["foo"]
"bar"
"""
self.apply_func(lambda s: s.strip())
def pop(self, key):
return self._items.pop(key, None)
_album_metadata_processors = []
_track_metadata_processors = []
def register_album_metadata_processor(function):
"""Registers new album-level metadata processor."""
_album_metadata_processors.append(function)
def register_track_metadata_processor(function):
"""Registers new track-level metadata processor."""
_track_metadata_processors.append(function)
def run_album_metadata_processors(tagger, metadata, release):
for processor in _album_metadata_processors:
processor(tagger, metadata, release)
def run_track_metadata_processors(tagger, metadata, release, track):
for processor in _track_metadata_processors:
processor(tagger, metadata, track, release)
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