1 # -*- coding: utf-8 -*-
2 # Copyright (c) 2013, 2014 Jack Kaliko <kaliko@azylum.org>
4 # This file is part of sima
6 # sima is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 3 of the License, or
9 # (at your option) any later version.
11 # sima is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with sima. If not, see <http://www.gnu.org/licenses/>.
21 Defines some object to handle audio file metadata
24 from .simastr import SimaStr
26 class MetaException(Exception):
27 """Generic Meta Exception"""
30 class NotSameArtist(MetaException):
35 """Generic Class for Meta object"""
37 def __init__(self, **kwargs):
40 if 'name' not in kwargs:
41 raise MetaException('need at least a "name" argument')
42 self.__dict__.update(kwargs)
45 fmt = '{0}(name="{1.name}", mbid="{1.mbid}")'
46 return fmt.format(self.__class__.__name__, self)
51 def __eq__(self, other):
53 Perform mbid equality test if present,
54 else fallback on fuzzy equality
56 if hasattr(other, 'mbid'):
57 if other.mbid and self.mbid:
58 return self.mbid == other.mbid
59 return SimaStr(str(self)) == SimaStr(str(other))
62 if self.mbid is not None:
63 return hash(self.mbid)
69 __hash__ = Meta.__hash__
71 def __init__(self, **kwargs):
72 super().__init__(**kwargs)
74 def __eq__(self, other):
76 Perform mbid equality test if present,
77 else fallback on self.name equality
79 if hasattr(other, 'mbid'):
80 if other.mbid and self.mbid:
81 return self.mbid == other.mbid
82 return str(self) == str(other)
91 def __init__(self, **kwargs):
93 super().__init__(**kwargs)
95 def append(self, name):
96 self._aliases.append(name)
100 return self._aliases + [self.name]
102 def __add__(self, other):
103 if isinstance(other, Artist):
104 if self.mbid == other.mbid:
105 res = Artist(**self.__dict__)
106 res._aliases.extend(other.names)
109 raise NotSameArtist('different mbids: {0} and {1}'.format(self, other))
111 # vim: ai ts=4 sw=4 sts=4 expandtab