lib/python/Tools/Directories.py

   1 # -*- coding: utf-8 -*-
   2
   3 from os import path as os_path, mkdir, rmdir, system, walk, stat as os_stat, listdir, readlink, makedirs, error as os_error, symlink, access, F_OK, R_OK, W_OK
   4 from stat import S_IMODE
   5 from re import compile
   6
   7 try:
   8         from os import chmod
   9         have_chmod = True
  10 except:
  11         have_chmod = False
  12
  13 try:
  14         from os import utime
  15         have_utime = True
  16 except:
  17         have_utime = False
  18
  19 SCOPE_TRANSPONDERDATA = 0
  20 SCOPE_SYSETC = 1
  21 SCOPE_FONTS = 2
  22 SCOPE_SKIN = 3
  23 SCOPE_SKIN_IMAGE = 4
  24 SCOPE_USERETC = 5
  25 SCOPE_CONFIG = 6
  26 SCOPE_LANGUAGE = 7
  27 SCOPE_HDD = 8
  28 SCOPE_PLUGINS = 9
  29 SCOPE_MEDIA = 10
  30 SCOPE_PLAYLIST = 11
  31 SCOPE_CURRENT_SKIN = 12
  32 SCOPE_DEFAULTDIR = 13
  33 SCOPE_DEFAULTPARTITION = 14
  34 SCOPE_DEFAULTPARTITIONMOUNTDIR = 14
  35
  36 PATH_CREATE = 0
  37 PATH_DONTCREATE = 1
  38 PATH_FALLBACK = 2
  39 defaultPaths = {
  40                 SCOPE_TRANSPONDERDATA: ("/etc/", PATH_DONTCREATE),
  41                 SCOPE_SYSETC: ("/etc/", PATH_DONTCREATE),
  42                 SCOPE_FONTS: ("/usr/share/fonts/", PATH_DONTCREATE),
  43                 SCOPE_CONFIG: ("/etc/enigma2/", PATH_CREATE),
  44                 SCOPE_PLUGINS: ("/usr/lib/enigma2/python/Plugins/", PATH_CREATE),
  45
  46                 SCOPE_LANGUAGE: ("/usr/share/enigma2/po/", PATH_DONTCREATE),
  47
  48                 SCOPE_SKIN: ("/usr/share/enigma2/", PATH_DONTCREATE),
  49                 SCOPE_SKIN_IMAGE: ("/usr/share/enigma2/", PATH_DONTCREATE),
  50                 SCOPE_HDD: ("/hdd/movie/", PATH_DONTCREATE),
  51                 SCOPE_MEDIA: ("/media/", PATH_DONTCREATE),
  52                 SCOPE_PLAYLIST: ("/etc/enigma2/playlist/", PATH_CREATE),
  53
  54                 SCOPE_USERETC: ("", PATH_DONTCREATE), # user home directory
  55
  56                 SCOPE_DEFAULTDIR: ("/usr/share/enigma2/defaults/", PATH_CREATE),
  57                 SCOPE_DEFAULTPARTITION: ("/dev/mtdblock/6", PATH_DONTCREATE),
  58                 SCOPE_DEFAULTPARTITIONMOUNTDIR: ("/usr/share/enigma2/dealer", PATH_CREATE),
  59         }
  60
  61 FILE_COPY = 0 # copy files from fallback dir to the basedir
  62 FILE_MOVE = 1 # move files
  63 PATH_COPY = 2 # copy the complete fallback dir to the basedir
  64 PATH_MOVE = 3 # move the fallback dir to the basedir (can be used for changes in paths)
  65 fallbackPaths = {
  66                 SCOPE_CONFIG: [("/home/root/", FILE_MOVE),
  67                                            ("/usr/share/enigma2/defaults/", FILE_COPY)],
  68                 SCOPE_HDD: [("/hdd/movies", PATH_MOVE)]
  69         }
  70
  71 def resolveFilename(scope, base = "", path_prefix = None):
  72         if base[0:2] == "~/":
  73                 # you can only use the ~/ if we have a prefix directory
  74                 assert path_prefix is not None
  75                 base = os_path.join(path_prefix, base[2:])
  76
  77         # don't resolve absolute paths
  78         if base[0:1] == '/':
  79                 return base
  80
  81         if scope == SCOPE_CURRENT_SKIN:
  82                 from Components.config import config
  83                 tmp = defaultPaths[SCOPE_SKIN]
  84                 pos = config.skin.primary_skin.value.rfind('/')
  85                 if pos != -1:
  86                         path = tmp[0]+config.skin.primary_skin.value[:pos+1]
  87                 else:
  88                         path = tmp[0]
  89         else:
  90                 tmp = defaultPaths[scope]
  91                 path = tmp[0]
  92
  93         flags = tmp[1]
  94
  95         if flags == PATH_CREATE:
  96                 if not pathExists(path):
  97                         mkdir(path)
  98
  99         fallbackPath = fallbackPaths.get(scope)
 100
 101         if fallbackPath and not fileExists(path + base):
 102                 for x in fallbackPath:
 103                         if x[1] == FILE_COPY:
 104                                 if fileExists(x[0] + base):
 105                                         system("cp " + x[0] + base + " " + path + base)
 106                                         break
 107                         elif x[1] == FILE_MOVE:
 108                                 if fileExists(x[0] + base):
 109                                         system("mv " + x[0] + base + " " + path + base)
 110                                         break
 111                         elif x[1] == PATH_COPY:
 112                                 if pathExists(x[0]):
 113                                         if not pathExists(defaultPaths[scope][0]):
 114                                                 mkdir(path)
 115                                         system("cp -a " + x[0] + "* " + path)
 116                                         break
 117                         elif x[1] == PATH_MOVE:
 118                                 if pathExists(x[0]):
 119                                         system("mv " + x[0] + " " + path)
 120                                         break
 121
 122         # FIXME: we also have to handle DATADIR etc. here.
 123         return path + base
 124         # this is only the BASE - an extension must be added later.
 125
 126 def pathExists(path):
 127         return os_path.exists(path)
 128
 129 def isMount(path):
 130         return os_path.ismount(path)
 131
 132 def createDir(path, makeParents = False):
 133         try:
 134                 if makeParents:
 135                         makedirs(path)
 136                 else:
 137                         mkdir(path)
 138         except:
 139                 ret = 0
 140         else:
 141                 ret = 1
 142         return ret
 143
 144 def removeDir(path):
 145         try:
 146                 rmdir(path)
 147         except:
 148                 ret = 0
 149         else:
 150                 ret = 1
 151         return ret
 152
 153 def fileExists(f, mode='r'):
 154         if mode == 'r':
 155                 acc_mode = R_OK
 156         elif mode == 'w':
 157                 acc_mode = W_OK
 158         else:
 159                 acc_mode = F_OK
 160         return access(f, acc_mode)
 161
 162 def getRecordingFilename(basename, dirname = None):
 163         # filter out non-allowed characters
 164         non_allowed_characters = "/.\\:*?<>|\""
 165         filename = ""
 166
 167         basename = basename.replace('\xc2\x86', '').replace('\xc2\x87', '')
 168
 169         for c in basename:
 170                 if c in non_allowed_characters or ord(c) < 32:
 171                         c = "_"
 172                 filename += c
 173
 174         if dirname is not None:
 175                 filename = ''.join((dirname, filename))
 176
 177         i = 0
 178         while True:
 179                 path = resolveFilename(SCOPE_HDD, filename)
 180                 if i > 0:
 181                         path += "_%03d" % i
 182                 try:
 183                         open(path + ".ts")
 184                         i += 1
 185                 except IOError:
 186                         return path
 187
 188 # this is clearly a hack:
 189 def InitFallbackFiles():
 190         resolveFilename(SCOPE_CONFIG, "userbouquet.favourites.tv")
 191         resolveFilename(SCOPE_CONFIG, "bouquets.tv")
 192         resolveFilename(SCOPE_CONFIG, "userbouquet.favourites.radio")
 193         resolveFilename(SCOPE_CONFIG, "bouquets.radio")
 194
 195 # returns a list of tuples containing pathname and filename matching the given pattern
 196 # example-pattern: match all txt-files: ".*\.txt$"
 197 def crawlDirectory(directory, pattern):
 198         expression = compile(pattern)
 199         list = []
 200         for root, dirs, files in walk(directory):
 201                 for file in files:
 202                         if expression.match(file) is not None:
 203                                 list.append((root, file))
 204         return list
 205
 206 def copyfile(src, dst):
 207         try:
 208                 f1 = open(src, "rb")
 209                 if os_path.isdir(dst):
 210                         dst = os_path.join(dst, os_path.basename(src))
 211                 f2 = open(dst, "w+b")
 212                 while True:
 213                         buf = f1.read(16*1024)
 214                         if not buf:
 215                                 break
 216                         f2.write(buf)
 217                 st = os_stat(src)
 218                 mode = S_IMODE(st.st_mode)
 219                 if have_chmod:
 220                         chmod(dst, mode)
 221                 if have_utime:
 222                         utime(dst, (st.st_atime, st.st_mtime))
 223         except:
 224                 print "copy", src, "to", dst, "failed!"
 225                 return -1
 226         return 0
 227
 228 def copytree(src, dst, symlinks=False):
 229         names = listdir(src)
 230         if os_path.isdir(dst):
 231                 dst = os_path.join(dst, os_path.basename(src))
 232                 if not os_path.isdir(dst):
 233                         mkdir(dst)
 234         else:
 235                 makedirs(dst)
 236         for name in names:
 237                 srcname = os_path.join(src, name)
 238                 dstname = os_path.join(dst, name)
 239                 try:
 240                         if symlinks and os_path.islink(srcname):
 241                                 linkto = readlink(srcname)
 242                                 symlink(linkto, dstname)
 243                         elif os_path.isdir(srcname):
 244                                 copytree(srcname, dstname, symlinks)
 245                         else:
 246                                 copyfile(srcname, dstname)
 247                 except:
 248                         print "dont copy srcname (no file or link or folder)"
 249         try:
 250                 st = os_stat(src)
 251                 mode = S_IMODE(st.st_mode)
 252                 if have_chmod:
 253                         chmod(dst, mode)
 254                 if have_utime:
 255                         utime(dst, (st.st_atime, st.st_mtime))
 256         except:
 257                 print "copy stats for", src, "failed!"