code.delx.au - notipod/blob - libsyncitunes.py

   1 #!/usr/bin/env python
   2 # Copyright 2009 James Bunton <jamesbunton@fastmail.fm>
   3 # Licensed for distribution under the GPL version 2, check COPYING for details
   4
   5 import logging
   6 import os
   7 import shutil
   8 import urllib
   9
  10 from Foundation import *
  11
  12
  13 def read_plist(filename):
  14         try:
  15                 data = buffer(open(filename).read())
  16         except IOError:
  17                 return None
  18         plist, fmt, err = NSPropertyListSerialization.propertyListFromData_mutabilityOption_format_errorDescription_(data, NSPropertyListMutableContainers, None, None)
  19         if err is not None:
  20                 errStr = err.encode("utf-8")
  21                 err.release() # Doesn't follow Cocoa conventions for some reason
  22                 raise TypeError(errStr)
  23         return plist
  24
  25 class Playlist(NSObject):
  26         def init(self):
  27                 return self
  28
  29         def set(self, name, pid, tracks, parent):
  30                 self.name = name
  31                 self.pid = pid
  32                 self.children = []
  33                 self.tracks = []
  34                 self.parent = parent
  35                 if parent is not None:
  36                         parent.children.append(self)
  37
  38 class ITunesLibrary(NSObject):
  39         def init(self):
  40                 return self.initWithFilename_("~/Music/iTunes/iTunes Music Library.xml")
  41
  42         def initWithFilename_(self, filename):
  43                 filename = os.path.expanduser(filename)
  44                 plist = read_plist(os.path.expanduser(filename))
  45                 self.folder = self.loc2name(plist["Music Folder"])
  46                 pl_tracks = plist["Tracks"]
  47                 self.playlists = {}
  48                 for pl_playlist in plist["Playlists"]:
  49                         playlist = self.make_playlist(pl_playlist, pl_tracks)
  50                         self.playlists[playlist.pid] = playlist
  51                 return self
  52
  53         def loc2name(self, location):
  54                 return urllib.splithost(urllib.splittype(urllib.unquote(location))[1])[1]
  55
  56         def make_playlist(self, pl_playlist, pl_tracks):
  57 ###             print pl_playlist
  58                 name = pl_playlist["Name"]
  59                 pid = pl_playlist["Playlist Persistent ID"]
  60                 parent = None
  61                 try:
  62                         parent_pid = pl_playlist["Parent Persistent ID"]
  63                         parent = self.playlists.get(parent_pid)
  64                 except KeyError:
  65                         pass
  66                 tracks = []
  67                 for item in pl_playlist.get("Playlist Items", []):
  68                         trackID = item["Track ID"]
  69                         filename = str(pl_tracks[str(trackID)]["Location"])
  70                         filename = self.loc2name(filename)
  71                         filename = eval(repr(filename).lstrip("u")).decode("utf-8")
  72                         tracks.append(filename)
  73                 playlist = Playlist.alloc().init()
  74                 playlist.set(name, pid, tracks, parent)
  75                 return playlist
  76
  77         def has_playlist(self, playlist):
  78                 for p in self.playlists:
  79                         if p.name == playlist:
  80                                 return True
  81                 return False
  82
  83         def get_playlist(self, name):
  84                 playlist = [p for p in self.playlists if p.name == name][0]
  85                 return playlist.tracks
  86
  87         def get_playlists(self):
  88                 return self.playlists.values()
  89
  90         def outlineView_numberOfChildrenOfItem_(self, view, item):
  91                 if item == None:
  92                         return len(self.playlists)
  93                 else:
  94                         return 0
  95
  96         def outlineView_isItemExpandable_(self, view, item):
  97                 return False
  98
  99         def outlineView_child_ofItem_(self, view, index, item):
 100                 if item == None:
 101                         return self.playlists[index]
 102                 else:
 103                         return None
 104
 105         def outlineView_objectValueForTableColumn_byItem_(self, view, column, item):
 106                 return item.name
 107
 108
 109 def export_m3u(dry_run, dest, drive_letter, music_dir, playlist_name, files):
 110         if dry_run:
 111                 return
 112         f = open(os.path.join(dest, playlist_name) + ".m3u", "w")
 113         for filename in files:
 114                 filename = filename.replace("/", "\\").encode("utf-8")
 115                 f.write("%s:\\%s\\%s\n" % (drive_letter, music_dir, filename))
 116         f.close()
 117
 118 def strip_prefix(s, prefix):
 119         assert s.startswith(prefix)
 120         s = s[len(prefix):]
 121         if s.startswith("/"):
 122                 s = s[1:]
 123         return s
 124
 125 def mkdirhier(path):
 126         if os.path.isdir(path):
 127                 return
 128         paths = [path]
 129         while path != "/":
 130                 path = os.path.split(path)[0]
 131                 paths.append(path)
 132         for path in reversed(paths):
 133                 try:
 134                         os.mkdir(path)
 135                 except OSError:
 136                         pass
 137
 138 def sync(dry_run, source, dest, files):
 139         join = os.path.join
 140
 141         logging.info("Calculating files to sync and deleting old files")
 142         files = set(files)
 143         for dirpath, dirnames, filenames in os.walk(dest):
 144                 full_dirpath = dirpath
 145                 dirpath = strip_prefix(dirpath, dest)
 146
 147                 for filename in filenames:
 148                         filename = join(dirpath, filename).decode("utf-8")
 149
 150                         # Whenever 'file' is deleted OSX will helpfully remove '._file'
 151                         if not os.path.exists(join(dest, filename)):
 152                                 continue
 153
 154                         if filename in files:
 155                                 sourcestat = os.stat(join(source, filename))
 156                                 deststat = os.stat(join(dest, filename))
 157                                 same_time = abs(sourcestat.st_mtime - deststat.st_mtime) < 5
 158                                 same_size = sourcestat.st_size == deststat.st_size
 159                                 if same_time and same_size:
 160                                         files.remove(filename)
 161                                         logging.debug("keep: " + filename)
 162                                 else:
 163                                         logging.debug("update: " + filename)
 164
 165                         elif not filename.startswith("Playlists/"):
 166                                 logging.debug("delete: " + filename)
 167                                 if not dry_run:
 168                                         os.unlink(join(dest, filename))
 169
 170                 if len(os.listdir(full_dirpath)) == 0:
 171                         logging.debug("rmdir: " + dirpath)
 172                         if not dry_run:
 173                                 os.rmdir(full_dirpath)
 174
 175
 176         logging.info("Copying new files")
 177         files = list(files)
 178         files.sort()
 179         for filename in files:
 180                 logging.debug("copy: " + filename)
 181                 if not dry_run:
 182                         mkdirhier(os.path.dirname(join(dest, filename)))
 183                         shutil.copy2(join(source, filename), join(dest, filename))
 184
 185