clSong.py

   1 from PyQt4 import QtCore
   2 from misc import ORGNAME, APPNAME, sec2min
   3 import os
   4
   5 # compare two songs with respect to their album
   6 def isSameAlbum(song1, song2):
   7     return song1.getAlbum()==song2.getAlbum() \
   8             and song1.getTag('date')==song2.getTag('date')
   9
  10 class Song:
  11     """The Song class offers an abstraction of a song."""
  12     _data=None
  13
  14     def __init__(self, data):
  15         self._data=data
  16         if 'id' in self._data:
  17             self._data['id']=int(self._data['id'])
  18         if 'track' in self._data:
  19             # make sure the track is a valid number!
  20             t=self._data['track']
  21             for i in xrange(len(t)):
  22                 if ord(t[i])<ord('0') or ord(t[i])>ord('9'):
  23                     try:
  24                         self._data['track']=int(t[0:i])
  25                     except TypeError:
  26                         self._data['track']=-1
  27                     break
  28             self._data['track']=int(self._data['track'])
  29
  30         # ensure all string-values are utf-8 encoded
  31         for tag in self._data.keys():
  32             if isinstance(self._data[tag], str):
  33                 self._data[tag]=unicode(self._data[tag], "utf-8")
  34         if 'time' in self._data:
  35             self._data['time']   = int(self._data['time'])
  36             self._data['timems'] = '%i:%i'%(self._data['time'] / 60, self._data['time'] % 60)
  37             self._data['length'] = sec2min(self._data['time'])
  38
  39     def getID(self):
  40         """Get the ID."""
  41         return self.getTag('id', -1)
  42
  43     def getTitle(self):
  44         """Get the title."""
  45         return self.getTag('title', self._data['file'])
  46
  47     def getArtist(self):
  48         """Get the artist."""
  49         return self.getTag('artist', self._data['file'])
  50
  51     def getTrack(self):
  52         """Get the track."""
  53         return self.getTag('track')
  54
  55     def getAlbum(self):
  56         """Get the album."""
  57         return self.getTag('album')
  58
  59     def getFilepath(self):
  60         """Get the filepath."""
  61         return self._data['file']
  62
  63     def match(self, str):
  64         """Checks if the string str matches this song. Assumes str is lowercase."""
  65         return str.__str__() in self.__str__().lower()
  66
  67     def __str__(self):
  68         return "%s - %s [%s]" % (self.getTag('artist'), self.getTag('title'), self.getTag('album'))
  69
  70     def getTag(self, tag, default=''):
  71         """Get a tag. If it doesn't exist, return $default."""
  72         if tag in self._data:
  73             return self._data[tag]
  74         if tag=='song':
  75             return self.__str__()
  76
  77         return default
  78
  79     def expand_tags(self, str):
  80         """Expands tags in form $tag in str."""
  81         ret = str
  82         for tag in self._data:
  83             ret = ret.replace('$' + tag, unicode(self._data[tag]))
  84         return ret
  85