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                 self.folder = self.loc2name(plist["Music Folder"])
  48                 pl_tracks = plist["Tracks"]
  49                 self.playlists = {}
  50                 for pl_playlist in plist["Playlists"]:
  51                         playlist = self.make_playlist(pl_playlist, pl_tracks)
  52                         if not playlist:
  53                                 continue
  54                         yield "Read playlist: " + playlist.name
  55                         self.playlists[playlist.pid] = playlist
  56
  57         def loc2name(self, location):
  58                 return urllib.splithost(urllib.splittype(urllib.unquote(location))[1])[1]
  59
  60         def make_playlist(self, pl_playlist, pl_tracks):
  61                 if int(pl_playlist.get("Master", 0)):
  62                         return
  63                 kind = int(pl_playlist.get("Distinguished Kind", -1))
  64                 if kind == 26:
  65                         # Don't do genius
  66                         return
  67
  68                 name = pl_playlist["Name"]
  69                 pid = pl_playlist["Playlist Persistent ID"]
  70                 if kind > 0:
  71                         ptype = {
  72                                 2: "movies",
  73                                 3: "tv-shows",
  74                                 4: "music",
  75                                 5: "books",
  76                                 10: "podcasts",
  77                                 19: "purchased",
  78                                 22: "itunes-dj",
  79                                 31: "itunes-u",
  80                         }.get(kind, "playlist")
  81                 elif pl_playlist.has_key("Smart Info"):
  82                         ptype = "smart-playlist"
  83                 elif int(pl_playlist.get("Folder", 0)):
  84                         ptype = "folder"
  85                 else:
  86                         ptype = "playlist"
  87
  88                 parent = None
  89                 try:
  90                         parent_pid = pl_playlist["Parent Persistent ID"]
  91                         parent = self.playlists.get(parent_pid)
  92                 except KeyError:
  93                         pass
  94                 tracks = []
  95                 for item in pl_playlist.get("Playlist Items", []):
  96                         trackID = item["Track ID"]
  97                         filename = str(pl_tracks[str(trackID)]["Location"])
  98                         filename = self.loc2name(filename)
  99                         filename = filename.decode("utf-8")
 100                         if not filename.startswith(self.folder):
 101                                 logging.warn("Skipping: " + filename)
 102                                 continue
 103                         filename = strip_prefix(filename, self.folder)
 104                         tracks.append(filename)
 105                 playlist = Playlist.alloc().init()
 106                 playlist.set(name, pid, ptype, tracks, parent)
 107                 return playlist
 108
 109         def has_playlist_name(self, name):
 110                 for p in self.get_playlists():
 111                         if p.name == name:
 112                                 return True
 113                 return False
 114
 115         def get_playlist_name(self, name):
 116                 for playlist in self.get_playlists():
 117                         if playlist.name == name:
 118                                 return playlist
 119
 120         def get_playlist_pid(self, pid):
 121                 for playlist in self.get_playlists():
 122                         if playlist.pid == pid:
 123                                 return playlist
 124
 125         def get_playlists(self):
 126                 return self.playlists.values()
 127
 128
 129 encoded_names = {}
 130 valid_chars = frozenset("\\/-_.() abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
 131 def encode_filename(filename):
 132         try:
 133                 return encoded_names[filename]
 134         except KeyError:
 135                 pass
 136         orig_filename = filename
 137         filename = filename.encode("ascii", "ignore")
 138         filename = "".join(c for c in filename if c in valid_chars)
 139         if filename in encoded_names:
 140                 a, b = os.path.splitext(filename)
 141                 a += "-dup"
 142                 filename = a + b
 143         encoded_names[orig_filename] = filename
 144         return filename
 145
 146 def strip_prefix(s, prefix):
 147         assert s.startswith(prefix)
 148         s = s[len(prefix):]
 149         if s.startswith("/"):
 150                 s = s[1:]
 151         return s
 152
 153 def mkdirhier(path):
 154         if os.path.isdir(path):
 155                 return
 156         paths = [path]
 157         while path != "/":
 158                 path = os.path.split(path)[0]
 159                 paths.append(path)
 160         for path in reversed(paths):
 161                 try:
 162                         os.mkdir(path)
 163                 except OSError:
 164                         pass
 165
 166 def export_m3u(dry_run, dest, path_prefix, playlist_name, files):
 167         if dry_run:
 168                 return
 169         if not path_prefix:
 170                 path_prefix = "../"
 171         playlist_file = os.path.join(dest, "-Playlists-", playlist_name) + ".m3u"
 172         mkdirhier(os.path.dirname(playlist_file))
 173         logging.info("Writing: " + playlist_file)
 174         f = open(playlist_file, "w")
 175         for filename in files:
 176                 if path_prefix.find("\\") > 0:
 177                         filename = filename.replace("/", "\\")
 178                 filename = encode_filename(filename)
 179                 f.write("%s%s\n" % (path_prefix, filename))
 180         f.close()
 181
 182 def sync(dry_run, source, dest, files_to_copy):
 183         join = os.path.join
 184
 185         logging.info("Calculating files to sync and deleting old files")
 186         source = source.encode("utf-8")
 187         dest = dest.encode("utf-8")
 188         filemap = {}
 189         class SyncFile(object): pass
 190         for f in files_to_copy:
 191                 sf = SyncFile()
 192                 sf.orig_filename = f.encode("utf-8")
 193                 sf.encoded_filename = encode_filename(f)
 194                 filemap[sf.encoded_filename.lower()] = sf
 195         files_to_copy = set(filemap)
 196
 197         for dirpath, dirnames, filenames in os.walk(dest):
 198                 full_dirpath = dirpath
 199                 dirpath = strip_prefix(dirpath, dest)
 200
 201                 for filename in filenames:
 202                         filename = join(dirpath, filename)
 203
 204                         # Whenever 'file' is deleted OSX will helpfully remove '._file'
 205                         if not os.path.exists(join(dest, filename)):
 206                                 continue
 207
 208                         if filename.lower() in files_to_copy:
 209                                 source_filename = filemap[filename.lower()].orig_filename
 210                                 sourcestat = os.stat(join(source, source_filename))
 211                                 deststat = os.stat(join(dest, filename))
 212                                 same_time = abs(sourcestat.st_mtime - deststat.st_mtime) < 5
 213                                 same_size = sourcestat.st_size == deststat.st_size
 214                                 if same_time and same_size:
 215                                         files_to_copy.remove(filename.lower())
 216                                         yield "Keep: " + filename
 217                                 else:
 218                                         yield "Update: " + filename
 219
 220                         elif not filename.startswith("-Playlists-"):
 221                                 yield "Delete: " + filename
 222                                 if not dry_run:
 223                                         os.unlink(join(dest, filename))
 224
 225                 if len(os.listdir(full_dirpath)) == 0:
 226                         yield "Delete: " + dirpath
 227                         if not dry_run:
 228                                 os.rmdir(full_dirpath)
 229
 230
 231         logging.info("Copying new files")
 232         files_to_copy = list(files_to_copy)
 233         files_to_copy.sort()
 234         for filename in files_to_copy:
 235                 yield "Copy: " + filemap[filename].orig_filename
 236                 if not dry_run:
 237                         source_file = join(source, filemap[filename].orig_filename)
 238                         dest_file = join(dest, filemap[filename].encoded_filename)
 239                         mkdirhier(os.path.dirname(dest_file))
 240                         shutil.copy2(source_file, dest_file)
 241
 242