code.delx.au - notipod/blob - libnotipod.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, ptype, tracks, parent):
  31                 self.name = name
  32                 self.pid = pid
  33                 self.ptype = ptype
  34                 self.children = []
  35                 self.tracks = tracks
  36                 self.parent = parent
  37                 if parent is not None:
  38                         parent.children.append(self)
  39
  40 class ITunesLibrary(NSObject):
  41         def load_(self, filename):
  42                 if filename is None:
  43                         filename = "~/Music/iTunes/iTunes Music Library.xml"
  44                 filename = os.path.expanduser(filename)
  45                 yield "Reading library..."
  46                 plist = read_plist(os.path.expanduser(filename))
  47                 if plist is None:
  48                         raise Exception("Could not find music library: " + filename)
  49                 self.folder = self.loc2name(plist["Music Folder"])
  50                 pl_tracks = plist["Tracks"]
  51                 pl_lookup = {}
  52                 self.playlists = []
  53                 for pl_playlist in plist["Playlists"]:
  54                         playlist = self.make_playlist(pl_playlist, pl_tracks, pl_lookup)
  55                         if not playlist:
  56                                 continue
  57                         yield "Read playlist: " + playlist.name
  58                         self.playlists.append(playlist)
  59                         pl_lookup[playlist.pid] = playlist
  60
  61         def loc2name(self, location):
  62                 return urllib.splithost(urllib.splittype(urllib.unquote(location))[1])[1]
  63
  64         def make_playlist(self, pl_playlist, pl_tracks, pl_lookup):
  65                 if int(pl_playlist.get("Master", 0)):
  66                         return
  67                 kind = int(pl_playlist.get("Distinguished Kind", -1))
  68                 if kind == 26:
  69                         # Don't do genius
  70                         return
  71
  72                 name = pl_playlist["Name"]
  73                 pid = pl_playlist["Playlist Persistent ID"]
  74                 if kind > 0:
  75                         ptype = {
  76                                 2: "movies",
  77                                 3: "tv-shows",
  78                                 4: "music",
  79                                 5: "books",
  80                                 10: "podcasts",
  81                                 19: "purchased",
  82                                 22: "itunes-dj",
  83                                 31: "itunes-u",
  84                         }.get(kind, "playlist")
  85                 elif pl_playlist.has_key("Smart Info"):
  86                         ptype = "smart-playlist"
  87                 elif int(pl_playlist.get("Folder", 0)):
  88                         ptype = "folder"
  89                 else:
  90                         ptype = "playlist"
  91
  92                 parent = None
  93                 try:
  94                         parent_pid = pl_playlist["Parent Persistent ID"]
  95                         parent = pl_lookup[parent_pid]
  96                 except KeyError:
  97                         pass
  98                 tracks = []
  99                 for item in pl_playlist.get("Playlist Items", []):
 100                         trackID = item["Track ID"]
 101                         filename = str(pl_tracks[str(trackID)]["Location"])
 102                         filename = self.loc2name(filename)
 103                         filename = filename.decode("utf-8")
 104                         if not filename.startswith(self.folder):
 105                                 logging.warn("Skipping: " + filename)
 106                                 continue
 107                         filename = strip_prefix(filename, self.folder)
 108                         tracks.append(filename)
 109                 playlist = Playlist.alloc().init()
 110                 playlist.set(name, pid, ptype, tracks, parent)
 111                 return playlist
 112
 113         def has_playlist_name(self, name):
 114                 for p in self.get_playlists():
 115                         if p.name == name:
 116                                 return True
 117                 return False
 118
 119         def get_playlist_name(self, name):
 120                 for playlist in self.get_playlists():
 121                         if playlist.name == name:
 122                                 return playlist
 123
 124         def get_playlist_pid(self, pid):
 125                 for playlist in self.get_playlists():
 126                         if playlist.pid == pid:
 127                                 return playlist
 128
 129         def get_playlists(self):
 130                 return self.playlists
 131
 132
 133 encoded_names = {}
 134 valid_chars = frozenset("\\/-_.() abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
 135 def encode_filename(filename):
 136         try:
 137                 return encoded_names[filename]
 138         except KeyError:
 139                 pass
 140         orig_filename = filename
 141         filename = filename.encode("ascii", "ignore")
 142         filename = "".join(c for c in filename if c in valid_chars)
 143         if filename in encoded_names:
 144                 a, b = os.path.splitext(filename)
 145                 a += "-dup"
 146                 filename = a + b
 147         encoded_names[orig_filename] = filename
 148         return filename
 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 export_m3u(dry_run, dest, path_prefix, playlist_name, files):
 171         if dry_run:
 172                 return
 173         if not path_prefix:
 174                 path_prefix = "../"
 175         playlist_file = os.path.join(dest, "-Playlists-", playlist_name) + ".m3u"
 176         playlist_file = encode_filename(playlist_file)
 177         mkdirhier(os.path.dirname(playlist_file))
 178         logging.info("Writing: " + playlist_file)
 179         f = open(playlist_file, "w")
 180         for filename in files:
 181                 if path_prefix.find("\\") > 0:
 182                         filename = filename.replace("/", "\\")
 183                 filename = encode_filename(filename)
 184                 f.write("%s%s\n" % (path_prefix, filename))
 185         f.close()
 186
 187 def sync(dry_run, source, dest, files_to_copy):
 188         join = os.path.join
 189
 190         logging.info("Calculating files to sync and deleting old files")
 191         source = source.encode("utf-8")
 192         dest = dest.encode("utf-8")
 193         filemap = {}
 194         class SyncFile(object): pass
 195         for f in files_to_copy:
 196                 sf = SyncFile()
 197                 sf.orig_filename = f.encode("utf-8")
 198                 sf.encoded_filename = encode_filename(f)
 199                 filemap[sf.encoded_filename.lower()] = sf
 200         files_to_copy = set(filemap)
 201
 202         for dirpath, dirnames, filenames in os.walk(dest):
 203                 full_dirpath = dirpath
 204                 dirpath = strip_prefix(dirpath, dest)
 205
 206                 for filename in filenames:
 207                         filename = join(dirpath, filename)
 208
 209                         # Whenever 'file' is deleted OSX will helpfully remove '._file'
 210                         if not os.path.exists(join(dest, filename)):
 211                                 continue
 212
 213                         if filename.lower() in files_to_copy:
 214                                 source_filename = filemap[filename.lower()].orig_filename
 215                                 sourcestat = os.stat(join(source, source_filename))
 216                                 deststat = os.stat(join(dest, filename))
 217                                 same_time = abs(sourcestat.st_mtime - deststat.st_mtime) < 5
 218                                 same_size = sourcestat.st_size == deststat.st_size
 219                                 if same_time and same_size:
 220                                         files_to_copy.remove(filename.lower())
 221                                         yield "Keep: " + filename
 222                                 else:
 223                                         yield "Update: " + filename
 224
 225                         elif not filename.startswith("-Playlists-"):
 226                                 yield "Delete: " + filename
 227                                 if not dry_run:
 228                                         os.unlink(join(dest, filename))
 229
 230                 if len(os.listdir(full_dirpath)) == 0:
 231                         yield "Delete: " + dirpath
 232                         if not dry_run:
 233                                 os.rmdir(full_dirpath)
 234
 235
 236         logging.info("Copying new files")
 237         files_to_copy = list(files_to_copy)
 238         files_to_copy.sort()
 239         for filename in files_to_copy:
 240                 yield "Copy: " + filemap[filename].orig_filename
 241                 if not dry_run:
 242                         source_file = join(source, filemap[filename].orig_filename)
 243                         dest_file = join(dest, filemap[filename].encoded_filename)
 244                         mkdirhier(os.path.dirname(dest_file))
 245                         shutil.copy2(source_file, dest_file)
 246
 247