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 sys
   9 import urllib
  10
  11 from Foundation import *
  12
  13
  14 def read_plist(filename):
  15         try:
  16                 data = buffer(open(filename).read())
  17         except IOError:
  18                 return None
  19         plist, fmt, err = NSPropertyListSerialization.propertyListFromData_mutabilityOption_format_errorDescription_(data, NSPropertyListMutableContainers, None, None)
  20         if err is not None:
  21                 errStr = err.encode("utf-8")
  22                 err.release() # Doesn't follow Cocoa conventions for some reason
  23                 raise TypeError(errStr)
  24         return plist
  25
  26 class Playlist(NSObject):
  27         def init(self):
  28                 return self
  29
  30         def set(self, name, pid, tracks, parent):
  31                 self.name = name
  32                 self.pid = pid
  33                 self.children = []
  34                 self.tracks = tracks
  35                 self.parent = parent
  36                 if parent is not None:
  37                         parent.children.append(self)
  38
  39 class ITunesLibrary(NSObject):
  40         def init(self):
  41                 return self.initWithFilename_("~/Music/iTunes/iTunes Music Library.xml")
  42
  43         def initWithFilename_(self, filename):
  44                 filename = os.path.expanduser(filename)
  45                 plist = read_plist(os.path.expanduser(filename))
  46                 self.folder = self.loc2name(plist["Music Folder"])
  47                 pl_tracks = plist["Tracks"]
  48                 self.playlists = {}
  49                 for pl_playlist in plist["Playlists"]:
  50                         playlist = self.make_playlist(pl_playlist, pl_tracks)
  51                         self.playlists[playlist.pid] = playlist
  52                 return self
  53
  54         def loc2name(self, location):
  55                 return urllib.splithost(urllib.splittype(urllib.unquote(location))[1])[1]
  56
  57         def make_playlist(self, pl_playlist, pl_tracks):
  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 = filename.decode("utf-8")
  72 ###                     filename = eval(repr(filename).lstrip("u")).decode("utf-8")
  73                         if not filename.startswith(self.folder):
  74                                 logging.warn("Skipping: " + filename)
  75                                 continue
  76                         filename = strip_prefix(filename, self.folder)
  77                         tracks.append(filename)
  78                 playlist = Playlist.alloc().init()
  79                 playlist.set(name, pid, tracks, parent)
  80                 return playlist
  81
  82         def has_playlist_name(self, name):
  83                 for p in self.get_playlists():
  84                         if p.name == name:
  85                                 return True
  86                 return False
  87
  88         def get_playlist_name(self, name):
  89                 for playlist in self.get_playlists():
  90                         if playlist.name == name:
  91                                 return playlist
  92
  93         def get_playlist_pid(self, pid):
  94                 for playlist in self.get_playlists():
  95                         if playlist.pid == pid:
  96                                 return playlist
  97
  98         def get_playlists(self):
  99                 return self.playlists.values()
 100
 101         def outlineView_numberOfChildrenOfItem_(self, view, item):
 102                 if item == None:
 103                         return len(self.playlists)
 104                 else:
 105                         return 0
 106
 107         def outlineView_isItemExpandable_(self, view, item):
 108                 return False
 109
 110         def outlineView_child_ofItem_(self, view, index, item):
 111                 if item == None:
 112                         return self.playlists[index]
 113                 else:
 114                         return None
 115
 116         def outlineView_objectValueForTableColumn_byItem_(self, view, column, item):
 117                 return item.name
 118
 119
 120 encoded_names = {}
 121 valid_chars = frozenset("\\/-_.() abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
 122 def encode_filename(filename):
 123         try:
 124                 return encoded_names[filename]
 125         except KeyError:
 126                 pass
 127         orig_filename = filename
 128         filename = filename.encode("ascii", "ignore")
 129         filename = "".join(c for c in filename if c in valid_chars)
 130         if filename in encoded_names:
 131                 a, b = os.path.splitext(filename)
 132                 a += "-dup"
 133                 filename = a + b
 134         encoded_names[orig_filename] = filename
 135         return filename
 136
 137 def export_m3u(dry_run, dest, path_prefix, playlist_name, files):
 138         if dry_run:
 139                 return
 140         playlist_file = os.path.join(dest, playlist_name) + ".m3u"
 141         logging.info("Writing: " + playlist_file)
 142         f = open(playlist_file, "w")
 143         for filename in files:
 144                 if path_prefix.find("\\") > 0:
 145                         filename = filename.replace("/", "\\")
 146                 filename = encode_filename(filename)
 147                 f.write("%s%s\n" % (path_prefix, filename))
 148         f.close()
 149
 150 def strip_prefix(s, prefix):
 151         assert s.startswith(prefix)
 152         s = s[len(prefix):]
 153         if s.startswith("/"):
 154                 s = s[1:]
 155         return s
 156
 157 def mkdirhier(path):
 158         if os.path.isdir(path):
 159                 return
 160         paths = [path]
 161         while path != "/":
 162                 path = os.path.split(path)[0]
 163                 paths.append(path)
 164         for path in reversed(paths):
 165                 try:
 166                         os.mkdir(path)
 167                 except OSError:
 168                         pass
 169
 170 def sync(dry_run, source, dest, files):
 171         join = os.path.join
 172
 173         logging.info("Calculating files to sync and deleting old files")
 174         source = source.encode("utf-8")
 175         dest = dest.encode("utf-8")
 176         filemap = {}
 177         for f in files:
 178                 filemap[encode_filename(f)] = f.encode("utf-8")
 179         files = set(filemap.keys())
 180         for dirpath, dirnames, filenames in os.walk(dest):
 181                 full_dirpath = dirpath
 182                 dirpath = strip_prefix(dirpath, dest)
 183
 184                 for filename in filenames:
 185                         filename = join(dirpath, filename)
 186
 187                         # Whenever 'file' is deleted OSX will helpfully remove '._file'
 188                         if not os.path.exists(join(dest, filename)):
 189                                 continue
 190
 191                         if filename in files:
 192                                 sourcestat = os.stat(join(source, filename))
 193                                 deststat = os.stat(join(dest, filename))
 194                                 same_time = abs(sourcestat.st_mtime - deststat.st_mtime) < 5
 195                                 same_size = sourcestat.st_size == deststat.st_size
 196                                 if same_time and same_size:
 197                                         files.remove(filename)
 198                                         logging.debug("keep: " + filename)
 199                                 else:
 200                                         logging.debug("update: " + filename)
 201
 202                         elif not filename.endswith(".m3u"):
 203                                 logging.debug("delete: " + filename)
 204                                 if not dry_run:
 205                                         os.unlink(join(dest, filename))
 206
 207                 if len(os.listdir(full_dirpath)) == 0:
 208                         logging.debug("rmdir: " + dirpath)
 209                         if not dry_run:
 210                                 os.rmdir(full_dirpath)
 211
 212
 213         logging.info("Copying new files")
 214         files = list(files)
 215         files.sort()
 216         for filename in files:
 217                 logging.debug("copy: " + filename)
 218                 if not dry_run:
 219                         mkdirhier(os.path.dirname(join(dest, filename)))
 220                         shutil.copy2(join(source, filemap[filename]), join(dest, filename))
 221
 222