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 absolute_import
  13 from __future__ import print_function
  14 from optparse import OptionParser
  15 import mozfile
  16 import os
  17 import os.path
  18 import sys
  19 import shutil
  20
  21
  22 def _nsinstall_internal(argv):
  23     usage = "usage: %prog [options] arg1 [arg2 ...] target-directory"
  24     p = OptionParser(usage=usage)
  25
  26     p.add_option('-D', action="store_true",
  27                  help="Create a single directory only")
  28     p.add_option('-t', action="store_true",
  29                  help="Preserve time stamp")
  30     p.add_option('-m', action="store",
  31                  help="Set mode", metavar="mode")
  32     p.add_option('-d', action="store_true",
  33                  help="Create directories in target")
  34     p.add_option('-R', action="store_true",
  35                  help="Use relative symbolic links (ignored)")
  36     p.add_option('-L', action="store", metavar="linkprefix",
  37                  help="Link prefix (ignored)")
  38     p.add_option('-X', action="append", metavar="file",
  39                  help="Ignore a file when installing a directory recursively.")
  40
  41     # The remaining arguments are not used in our tree, thus they're not
  42     # implented.
  43     def BadArg(option, opt, value, parser):
  44         parser.error('option not supported: {0}'.format(opt))
  45
  46     p.add_option('-C', action="callback", metavar="CWD",
  47                  callback=BadArg,
  48                  help="NOT SUPPORTED")
  49     p.add_option('-o', action="callback", callback=BadArg,
  50                  help="Set owner (NOT SUPPORTED)", metavar="owner")
  51     p.add_option('-g', action="callback", callback=BadArg,
  52                  help="Set group (NOT SUPPORTED)", metavar="group")
  53
  54     (options, args) = p.parse_args(argv)
  55
  56     if options.m:
  57         # mode is specified
  58         try:
  59             options.m = int(options.m, 8)
  60         except Exception:
  61             sys.stderr.write('nsinstall: {0} is not a valid mode\n'
  62                              .format(options.m))
  63             return 1
  64
  65     # just create one directory?
  66     def maybe_create_dir(dir, mode, try_again):
  67         dir = os.path.abspath(dir)
  68         if os.path.exists(dir):
  69             if not os.path.isdir(dir):
  70                 print('nsinstall: {0} is not a directory'.format(dir), file=sys.stderr)
  71                 return 1
  72             if mode:
  73                 os.chmod(dir, mode)
  74             return 0
  75
  76         try:
  77             if mode:
  78                 os.makedirs(dir, mode)
  79             else:
  80                 os.makedirs(dir)
  81         except Exception as e:
  82             # We might have hit EEXIST due to a race condition (see bug 463411) -- try again once
  83             if try_again:
  84                 return maybe_create_dir(dir, mode, False)
  85             print(
  86                 "nsinstall: failed to create directory {0}: {1}".format(dir, e))
  87             return 1
  88         else:
  89             return 0
  90
  91     if options.X:
  92         options.X = [os.path.abspath(path) for path in options.X]
  93
  94     if options.D:
  95         return maybe_create_dir(args[0], options.m, True)
  96
  97     # nsinstall arg1 [...] directory
  98     if len(args) < 2:
  99         p.error('not enough arguments')
 100
 101     def copy_all_entries(entries, target):
 102         for e in entries:
 103             e = os.path.abspath(e)
 104             if options.X and e in options.X:
 105                 continue
 106
 107             dest = os.path.join(target, os.path.basename(e))
 108             dest = os.path.abspath(dest)
 109             handleTarget(e, dest)
 110             if options.m:
 111                 os.chmod(dest, options.m)
 112
 113     # set up handler
 114     if options.d:
 115         # we're supposed to create directories
 116         def handleTarget(srcpath, targetpath):
 117             # target directory was already created, just use mkdir
 118             os.mkdir(targetpath)
 119     else:
 120         # we're supposed to copy files
 121         def handleTarget(srcpath, targetpath):
 122             if os.path.isdir(srcpath):
 123                 if not os.path.exists(targetpath):
 124                     os.mkdir(targetpath)
 125                 entries = [os.path.join(srcpath, e)
 126                            for e in os.listdir(srcpath)]
 127                 copy_all_entries(entries, targetpath)
 128                 # options.t is not relevant for directories
 129                 if options.m:
 130                     os.chmod(targetpath, options.m)
 131             else:
 132                 if os.path.exists(targetpath):
 133                     if sys.platform == "win32":
 134                         mozfile.remove(targetpath)
 135                     else:
 136                         os.remove(targetpath)
 137                 if options.t:
 138                     shutil.copy2(srcpath, targetpath)
 139                 else:
 140                     shutil.copy(srcpath, targetpath)
 141
 142     # the last argument is the target directory
 143     target = args.pop()
 144     # ensure target directory (importantly, we do not apply a mode to the directory
 145     # because we want to copy files into it and the mode might be read-only)
 146     rv = maybe_create_dir(target, None, True)
 147     if rv != 0:
 148         return rv
 149
 150     copy_all_entries(args, target)
 151     return 0
 152
 153 # nsinstall as a native command is always UTF-8
 154
 155
 156 def nsinstall(argv):
 157     return _nsinstall_internal([unicode(arg, "utf-8") for arg in argv])
 158
 159
 160 if __name__ == '__main__':
 161     # sys.argv corrupts characters outside the system code page on Windows
 162     # <http://bugs.python.org/issue2128>. Use ctypes instead. This is also
 163     # useful because switching to Unicode strings makes python use the wide
 164     # Windows APIs, which is what we want here since the wide APIs normally do a
 165     # better job at handling long paths and such.
 166     if sys.platform == "win32":
 167         import ctypes
 168         from ctypes import wintypes
 169         GetCommandLine = ctypes.windll.kernel32.GetCommandLineW
 170         GetCommandLine.argtypes = []
 171         GetCommandLine.restype = wintypes.LPWSTR
 172
 173         CommandLineToArgv = ctypes.windll.shell32.CommandLineToArgvW
 174         CommandLineToArgv.argtypes = [
 175             wintypes.LPWSTR, ctypes.POINTER(ctypes.c_int)]
 176         CommandLineToArgv.restype = ctypes.POINTER(wintypes.LPWSTR)
 177
 178         argc = ctypes.c_int(0)
 179         argv_arr = CommandLineToArgv(GetCommandLine(), ctypes.byref(argc))
 180         # The first argv will be "python", the second will be the .py file
 181         argv = argv_arr[1:argc.value]
 182     else:
 183         # For consistency, do it on Unix as well
 184         if sys.stdin.encoding is not None:
 185             argv = [unicode(arg, sys.stdin.encoding) for arg in sys.argv]
 186         else:
 187             argv = [unicode(arg) for arg in sys.argv]
 188
 189     sys.exit(_nsinstall_internal(argv[1:]))