lib/python/Components/Playlist.py

   1 from ServiceReference import ServiceReference
   2
   3 class PlaylistIO:
   4         def __init__(self):
   5                 self.list = []
   6
   7         # returns a list of services or None if filename is not a valid playlist
   8         def open(self, filename):
   9                 return None
  10
  11         OK = 0
  12         FILEEXISTS = 1
  13         WRITEERROR = 2
  14         ERROR = 3
  15         UNSUPPORTED_FILES_IN_PLAYLIST = 4
  16
  17         def save(self, filename = None):
  18                 return self.ERROR
  19
  20         def clear(self):
  21                 del self.list[:]
  22
  23         def addService(self, service):
  24                 self.list.append(service)
  25
  26
  27 class PlaylistIOInternal(PlaylistIO):
  28         def __init__(self):
  29                 PlaylistIO.__init__(self)
  30
  31         def open(self, filename):
  32                 self.clear()
  33                 try:
  34                         file = open(filename, "r")
  35                 except IOError:
  36                         return None
  37                 while True:
  38                         entry = file.readline().strip()
  39                         if entry == "":
  40                                 break
  41                         self.addService(ServiceReference(entry))
  42                 file.close()
  43                 return self.list
  44
  45         def save(self, filename = None):
  46                 print "Writing playlist into file", filename
  47                 file = open(filename, "w")
  48                 for x in self.list:
  49                         file.write(str(x) + "\n")
  50                 file.close()
  51
  52                 return self.OK