config/nsinstall.py

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this
   3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 # This is a partial python port of nsinstall.
   6 # It's intended to be used when there's no natively compile nsinstall
   7 # available, and doesn't intend to be fully equivalent.
   8 # Its major use is for l10n repackaging on systems that don't have
   9 # a full build environment set up.
  10 # The basic limitation is, it doesn't even try to link and ignores
  11 # all related options.
  12 from __future__ import print_function
  13 from optparse import OptionParser
  14 import mozfile
  15 import os
  16 import os.path
  17 import sys
  18 import shutil
  19
  20
  21 def _nsinstall_internal(argv):
  22     usage = "usage: %prog [options] arg1 [arg2 ...] target-directory"
  23     p = OptionParser(usage=usage)
  24
  25     p.add_option('-D', action="store_true",
  26                  help="Create a single directory only")
  27     p.add_option('-t', action="store_true",
  28                  help="Preserve time stamp")
  29     p.add_option('-m', action="store",
  30                  help="Set mode", metavar="mode")
  31     p.add_option('-d', action="store_true",
  32                  help="Create directories in target")
  33     p.add_option('-R', action="store_true",
  34                  help="Use relative symbolic links (ignored)")
  35     p.add_option('-L', action="store", metavar="linkprefix",
  36                  help="Link prefix (ignored)")
  37     p.add_option('-X', action="append", metavar="file",
  38                  help="Ignore a file when installing a directory recursively.")
  39
  40     # The remaining arguments are not used in our tree, thus they're not
  41     # implented.
  42     def BadArg(option, opt, value, parser):
  43         parser.error('option not supported: {0}'.format(opt))
  44
  45     p.add_option('-C', action="callback", metavar="CWD",
  46                  callback=BadArg,
  47                  help="NOT SUPPORTED")
  48     p.add_option('-o', action="callback", callback=BadArg,
  49                  help="Set owner (NOT SUPPORTED)", metavar="owner")
  50     p.add_option('-g', action="callback", callback=BadArg,
  51                  help="Set group (NOT SUPPORTED)", metavar="group")
  52
  53     (options, args) = p.parse_args(argv)
  54
  55     if options.m:
  56         # mode is specified
  57         try:
  58             options.m = int(options.m, 8)
  59         except Exception:
  60             sys.stderr.write('nsinstall: {0} is not a valid mode\n'
  61                              .format(options.m))
  62             return 1
  63
  64     # just create one directory?
  65     def maybe_create_dir(dir, mode, try_again):
  66         dir = os.path.abspath(dir)
  67         if os.path.exists(dir):
  68             if not os.path.isdir(dir):
  69                 print('nsinstall: {0} is not a directory'.format(dir), file=sys.stderr)
  70                 return 1
  71             if mode:
  72                 os.chmod(dir, mode)
  73             return 0
  74
  75         try:
  76             if mode:
  77                 os.makedirs(dir, mode)
  78             else:
  79                 os.makedirs(dir)
  80         except Exception as e:
  81             # We might have hit EEXIST due to a race condition (see bug 463411) -- try again once
  82             if try_again:
  83                 return maybe_create_dir(dir, mode, False)
  84             print(
  85                 "nsinstall: failed to create directory {0}: {1}".format(dir, e))
  86             return 1
  87         else:
  88             return 0
  89
  90     if options.X:
  91         options.X = [os.path.abspath(path) for path in options.X]
  92
  93     if options.D:
  94         return maybe_create_dir(args[0], options.m, True)
  95
  96     # nsinstall arg1 [...] directory
  97     if len(args) < 2:
  98         p.error('not enough arguments')
  99
 100     def copy_all_entries(entries, target):
 101         for e in entries:
 102             e = os.path.abspath(e)
 103             if options.X and e in options.X:
 104                 continue
 105
 106             dest = os.path.join(target, os.path.basename(e))
 107             dest = os.path.abspath(dest)
 108             handleTarget(e, dest)
 109             if options.m:
 110                 os.chmod(dest, options.m)
 111
 112     # set up handler
 113     if options.d:
 114         # we're supposed to create directories
 115         def handleTarget(srcpath, targetpath):
 116             # target directory was already created, just use mkdir
 117             os.mkdir(targetpath)
 118     else:
 119         # we're supposed to copy files
 120         def handleTarget(srcpath, targetpath):
 121             if os.path.isdir(srcpath):
 122                 if not os.path.exists(targetpath):
 123                     os.mkdir(targetpath)
 124                 entries = [os.path.join(srcpath, e)
 125                            for e in os.listdir(srcpath)]
 126                 copy_all_entries(entries, targetpath)
 127                 # options.t is not relevant for directories
 128                 if options.m:
 129                     os.chmod(targetpath, options.m)
 130             else:
 131                 if os.path.exists(targetpath):
 132                     if sys.platform == "win32":
 133                         mozfile.remove(targetpath)
 134                     else:
 135                         os.remove(targetpath)
 136                 if options.t:
 137                     shutil.copy2(srcpath, targetpath)
 138                 else:
 139                     shutil.copy(srcpath, targetpath)
 140
 141     # the last argument is the target directory
 142     target = args.pop()
 143     # ensure target directory (importantly, we do not apply a mode to the directory
 144     # because we want to copy files into it and the mode might be read-only)
 145     rv = maybe_create_dir(target, None, True)
 146     if rv != 0:
 147         return rv
 148
 149     copy_all_entries(args, target)
 150     return 0
 151
 152 # nsinstall as a native command is always UTF-8
 153
 154
 155 def nsinstall(argv):
 156     return _nsinstall_internal([unicode(arg, "utf-8") for arg in argv])
 157
 158
 159 if __name__ == '__main__':
 160     # sys.argv corrupts characters outside the system code page on Windows
 161     # <http://bugs.python.org/issue2128>. Use ctypes instead. This is also
 162     # useful because switching to Unicode strings makes python use the wide
 163     # Windows APIs, which is what we want here since the wide APIs normally do a
 164     # better job at handling long paths and such.
 165     if sys.platform == "win32":
 166         import ctypes
 167         from ctypes import wintypes
 168         GetCommandLine = ctypes.windll.kernel32.GetCommandLineW
 169         GetCommandLine.argtypes = []
 170         GetCommandLine.restype = wintypes.LPWSTR
 171
 172         CommandLineToArgv = ctypes.windll.shell32.CommandLineToArgvW
 173         CommandLineToArgv.argtypes = [
 174             wintypes.LPWSTR, ctypes.POINTER(ctypes.c_int)]
 175         CommandLineToArgv.restype = ctypes.POINTER(wintypes.LPWSTR)
 176
 177         argc = ctypes.c_int(0)
 178         argv_arr = CommandLineToArgv(GetCommandLine(), ctypes.byref(argc))
 179         # The first argv will be "python", the second will be the .py file
 180         argv = argv_arr[1:argc.value]
 181     else:
 182         # For consistency, do it on Unix as well
 183         if sys.stdin.encoding is not None:
 184             argv = [unicode(arg, sys.stdin.encoding) for arg in sys.argv]
 185         else:
 186             argv = [unicode(arg) for arg in sys.argv]
 187
 188     sys.exit(_nsinstall_internal(argv[1:]))