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