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 collections
   6 import logging
   7 import os
   8 import shutil
   9 import sys
  10 import urllib
  11
  12 from Foundation import *
  13
  14
  15 def read_plist(filename):
  16         try:
  17                 data = buffer(open(filename).read())
  18         except IOError:
  19                 return None
  20         plist, fmt, err = NSPropertyListSerialization.propertyListFromData_mutabilityOption_format_errorDescription_(data, NSPropertyListMutableContainers, None, None)
  21         if err is not None:
  22                 errStr = err.encode("utf-8")
  23                 err.release() # Doesn't follow Cocoa conventions for some reason
  24                 raise TypeError(errStr)
  25         return plist
  26
  27 class Playlist(NSObject):
  28         def init(self):
  29                 return self
  30
  31         def set(self, name, pid, ptype, tracks, parent):
  32                 self.name = name
  33                 self.pid = pid
  34                 self.ptype = ptype
  35                 self.children = []
  36                 self.tracks = tracks
  37                 self.parent = parent
  38                 if parent is not None:
  39                         parent.children.append(self)
  40
  41 class ITunesLibrary(NSObject):
  42         def load_(self, filename):
  43                 if filename is None:
  44                         filename = "~/Music/iTunes/iTunes Music Library.xml"
  45                 filename = os.path.expanduser(filename)
  46                 yield "Reading library..."
  47                 plist = read_plist(os.path.expanduser(filename))
  48                 if plist is None:
  49                         raise Exception("Could not find music library: " + filename)
  50                 self.folder = self.loc2name(plist["Music Folder"])
  51                 pl_tracks = plist["Tracks"]
  52                 pl_lookup = {}
  53                 self.playlists = []
  54                 self.track2playlist = collections.defaultdict(set)
  55                 self.track2filename = {}
  56                 for pl_playlist in plist["Playlists"]:
  57                         playlist = self.make_playlist(pl_playlist, pl_tracks, pl_lookup)
  58                         if not playlist:
  59                                 continue
  60                         yield "Read playlist: " + playlist.name
  61                         self.playlists.append(playlist)
  62                         pl_lookup[playlist.pid] = playlist
  63
  64         def loc2name(self, location):
  65                 return urllib.splithost(urllib.splittype(urllib.unquote(location))[1])[1]
  66
  67         def make_playlist(self, pl_playlist, pl_tracks, pl_lookup):
  68                 if int(pl_playlist.get("Master", 0)):
  69                         return
  70                 kind = int(pl_playlist.get("Distinguished Kind", -1))
  71                 if kind == 26:
  72                         # Don't do genius
  73                         return
  74
  75                 name = pl_playlist["Name"]
  76                 pid = pl_playlist["Playlist Persistent ID"]
  77                 if kind > 0:
  78                         ptype = {
  79                                 2: "movies",
  80                                 3: "tv-shows",
  81                                 4: "music",
  82                                 5: "books",
  83                                 10: "podcasts",
  84                                 19: "purchased",
  85                                 22: "itunes-dj",
  86                                 31: "itunes-u",
  87                         }.get(kind, "playlist")
  88                 elif pl_playlist.has_key("Smart Info"):
  89                         ptype = "smart-playlist"
  90                 elif int(pl_playlist.get("Folder", 0)):
  91                         ptype = "folder"
  92                 else:
  93                         ptype = "playlist"
  94
  95                 parent = None
  96                 try:
  97                         parent_pid = pl_playlist["Parent Persistent ID"]
  98                         parent = pl_lookup[parent_pid]
  99                 except KeyError:
 100                         pass
 101
 102                 tracks = []
 103                 for item in pl_playlist.get("Playlist Items", []):
 104                         trackID = item["Track ID"]
 105                         item = pl_tracks[str(trackID)]
 106                         self.track2playlist[trackID].add(pid)
 107                         tracks.append(trackID)
 108                         if trackID not in self.track2filename:
 109                                 if item["Track Type"] != "File":
 110                                         continue
 111                                 filename = str(item["Location"])
 112                                 filename = self.loc2name(filename)
 113                                 filename = filename.decode("utf-8")
 114                                 if not filename.startswith(self.folder):
 115                                         logging.warn("Skipping: " + filename)
 116                                         continue
 117                                 filename = strip_prefix(filename, self.folder)
 118                                 self.track2filename[trackID] = filename
 119
 120                 playlist = Playlist.alloc().init()
 121                 playlist.set(name, pid, ptype, tracks, parent)
 122                 return playlist
 123
 124         def has_playlist_name(self, name):
 125                 for p in self.get_playlists():
 126                         if p.name == name:
 127                                 return True
 128                 return False
 129
 130         def get_playlist_name(self, name):
 131                 for playlist in self.get_playlists():
 132                         if playlist.name == name:
 133                                 return playlist
 134
 135         def get_playlist_pid(self, pid):
 136                 for playlist in self.get_playlists():
 137                         if playlist.pid == pid:
 138                                 return playlist
 139
 140         def get_track_filename(self, trackID):
 141                 return self.track2filename.get(trackID, None)
 142
 143         def get_track_playlists(self, trackID):
 144                 return self.track2playlist.get(trackID, [])
 145
 146         def get_playlists(self):
 147                 return self.playlists
 148
 149
 150 encoded_names = {}
 151 valid_chars = frozenset("\\/-_.() abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
 152 def encode_filename(filename):
 153         try:
 154                 return encoded_names[filename]
 155         except KeyError:
 156                 pass
 157         orig_filename = filename
 158         filename = filename.encode("ascii", "ignore")
 159         filename = "".join(c for c in filename if c in valid_chars)
 160         if filename in encoded_names:
 161                 a, b = os.path.splitext(filename)
 162                 a += "-dup"
 163                 filename = a + b
 164         encoded_names[orig_filename] = filename
 165         return filename
 166
 167 def strip_prefix(s, prefix):
 168         assert s.startswith(prefix)
 169         s = s[len(prefix):]
 170         if s.startswith("/"):
 171                 s = s[1:]
 172         return s
 173
 174 def mkdirhier(path):
 175         if os.path.isdir(path):
 176                 return
 177         paths = [path]
 178         while path != "/":
 179                 path = os.path.split(path)[0]
 180                 paths.append(path)
 181         for path in reversed(paths):
 182                 try:
 183                         os.mkdir(path)
 184                 except OSError:
 185                         pass
 186
 187 def export_m3u(dry_run, dest, path_prefix, playlist_name, files):
 188         if dry_run:
 189                 return
 190         dest = os.path.join(dest, "-Playlists-")
 191         if not path_prefix:
 192                 try:
 193                         f = open(os.path.join(dest, ".path_prefix"))
 194                         path_prefix = f.read().strip()
 195                 except:
 196                         path_prefix = "../"
 197         playlist_file = os.path.join(dest, playlist_name) + ".m3u"
 198         playlist_file = encode_filename(playlist_file)
 199         mkdirhier(os.path.dirname(playlist_file))
 200         logging.info("Writing: " + playlist_file)
 201         f = open(playlist_file, "w")
 202         for filename in files:
 203                 if path_prefix.find("\\") > 0:
 204                         filename = filename.replace("/", "\\")
 205                 filename = encode_filename(filename)
 206                 f.write("%s%s\n" % (path_prefix, filename))
 207         f.close()
 208
 209 def sync(dry_run, source, dest, files_to_copy):
 210         join = os.path.join
 211
 212         logging.info("Calculating files to sync and deleting old files")
 213         source = source.encode("utf-8")
 214         dest = dest.encode("utf-8")
 215         filemap = {}
 216         class SyncFile(object): pass
 217         for f in files_to_copy:
 218                 sf = SyncFile()
 219                 sf.orig_filename = f.encode("utf-8")
 220                 sf.encoded_filename = encode_filename(f)
 221                 filemap[sf.encoded_filename.lower()] = sf
 222         files_to_copy = set(filemap)
 223
 224         for dirpath, dirnames, filenames in os.walk(dest):
 225                 full_dirpath = dirpath
 226                 dirpath = strip_prefix(dirpath, dest)
 227
 228                 for filename in filenames:
 229                         filename = join(dirpath, filename)
 230
 231                         # Whenever 'file' is deleted OSX will helpfully remove '._file'
 232                         if not os.path.exists(join(dest, filename)):
 233                                 continue
 234
 235                         if filename.lower() in files_to_copy:
 236                                 source_filename = filemap[filename.lower()].orig_filename
 237                                 sourcestat = os.stat(join(source, source_filename))
 238                                 deststat = os.stat(join(dest, filename))
 239                                 same_time = abs(sourcestat.st_mtime - deststat.st_mtime) < 5
 240                                 same_size = sourcestat.st_size == deststat.st_size
 241                                 if same_time and same_size:
 242                                         files_to_copy.remove(filename.lower())
 243                                         yield "Keep: " + filename
 244                                 else:
 245                                         yield "Update: " + filename
 246
 247                         elif not filename.startswith("-Playlists-"):
 248                                 yield "Delete: " + filename
 249                                 if not dry_run:
 250                                         os.unlink(join(dest, filename))
 251
 252                 if len(os.listdir(full_dirpath)) == 0:
 253                         yield "Delete: " + dirpath
 254                         if not dry_run:
 255                                 os.rmdir(full_dirpath)
 256
 257
 258         logging.info("Copying new files")
 259         files_to_copy = list(files_to_copy)
 260         files_to_copy.sort()
 261         for filename in files_to_copy:
 262                 yield "Copy: " + filemap[filename].orig_filename
 263                 if not dry_run:
 264                         source_file = join(source, filemap[filename].orig_filename)
 265                         dest_file = join(dest, filemap[filename].encoded_filename)
 266                         mkdirhier(os.path.dirname(dest_file))
 267                         shutil.copy2(source_file, dest_file)
 268
 269