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 six
  19 import sys
  20 import shutil
  21
  22
  23 def _nsinstall_internal(argv):
  24     usage = "usage: %prog [options] arg1 [arg2 ...] target-directory"
  25     p = OptionParser(usage=usage)
  26
  27     p.add_option('-D', action="store_true",
  28                  help="Create a single directory only")
  29     p.add_option('-t', action="store_true",
  30                  help="Preserve time stamp")
  31     p.add_option('-m', action="store",
  32                  help="Set mode", metavar="mode")
  33     p.add_option('-d', action="store_true",
  34                  help="Create directories in target")
  35     p.add_option('-R', action="store_true",
  36                  help="Use relative symbolic links (ignored)")
  37     p.add_option('-L', action="store", metavar="linkprefix",
  38                  help="Link prefix (ignored)")
  39     p.add_option('-X', action="append", metavar="file",
  40                  help="Ignore a file when installing a directory recursively.")
  41
  42     # The remaining arguments are not used in our tree, thus they're not
  43     # implented.
  44     def BadArg(option, opt, value, parser):
  45         parser.error('option not supported: {0}'.format(opt))
  46
  47     p.add_option('-C', action="callback", metavar="CWD",
  48                  callback=BadArg,
  49                  help="NOT SUPPORTED")
  50     p.add_option('-o', action="callback", callback=BadArg,
  51                  help="Set owner (NOT SUPPORTED)", metavar="owner")
  52     p.add_option('-g', action="callback", callback=BadArg,
  53                  help="Set group (NOT SUPPORTED)", metavar="group")
  54
  55     (options, args) = p.parse_args(argv)
  56
  57     if options.m:
  58         # mode is specified
  59         try:
  60             options.m = int(options.m, 8)
  61         except Exception:
  62             sys.stderr.write('nsinstall: {0} is not a valid mode\n'
  63                              .format(options.m))
  64             return 1
  65
  66     # just create one directory?
  67     def maybe_create_dir(dir, mode, try_again):
  68         dir = os.path.abspath(dir)
  69         if os.path.exists(dir):
  70             if not os.path.isdir(dir):
  71                 print('nsinstall: {0} is not a directory'.format(dir), file=sys.stderr)
  72                 return 1
  73             if mode:
  74                 os.chmod(dir, mode)
  75             return 0
  76
  77         try:
  78             if mode:
  79                 os.makedirs(dir, mode)
  80             else:
  81                 os.makedirs(dir)
  82         except Exception as e:
  83             # We might have hit EEXIST due to a race condition (see bug 463411) -- try again once
  84             if try_again:
  85                 return maybe_create_dir(dir, mode, False)
  86             print(
  87                 "nsinstall: failed to create directory {0}: {1}".format(dir, e))
  88             return 1
  89         else:
  90             return 0
  91
  92     if options.X:
  93         options.X = [os.path.abspath(path) for path in options.X]
  94
  95     if options.D:
  96         return maybe_create_dir(args[0], options.m, True)
  97
  98     # nsinstall arg1 [...] directory
  99     if len(args) < 2:
 100         p.error('not enough arguments')
 101
 102     def copy_all_entries(entries, target):
 103         for e in entries:
 104             e = os.path.abspath(e)
 105             if options.X and e in options.X:
 106                 continue
 107
 108             dest = os.path.join(target, os.path.basename(e))
 109             dest = os.path.abspath(dest)
 110             handleTarget(e, dest)
 111             if options.m:
 112                 os.chmod(dest, options.m)
 113
 114     # set up handler
 115     if options.d:
 116         # we're supposed to create directories
 117         def handleTarget(srcpath, targetpath):
 118             # target directory was already created, just use mkdir
 119             os.mkdir(targetpath)
 120     else:
 121         # we're supposed to copy files
 122         def handleTarget(srcpath, targetpath):
 123             if os.path.isdir(srcpath):
 124                 if not os.path.exists(targetpath):
 125                     os.mkdir(targetpath)
 126                 entries = [os.path.join(srcpath, e)
 127                            for e in os.listdir(srcpath)]
 128                 copy_all_entries(entries, targetpath)
 129                 # options.t is not relevant for directories
 130                 if options.m:
 131                     os.chmod(targetpath, options.m)
 132             else:
 133                 if os.path.exists(targetpath):
 134                     if sys.platform == "win32":
 135                         mozfile.remove(targetpath)
 136                     else:
 137                         os.remove(targetpath)
 138                 if options.t:
 139                     shutil.copy2(srcpath, targetpath)
 140                 else:
 141                     shutil.copy(srcpath, targetpath)
 142
 143     # the last argument is the target directory
 144     target = args.pop()
 145     # ensure target directory (importantly, we do not apply a mode to the directory
 146     # because we want to copy files into it and the mode might be read-only)
 147     rv = maybe_create_dir(target, None, True)
 148     if rv != 0:
 149         return rv
 150
 151     copy_all_entries(args, target)
 152     return 0
 153
 154 # nsinstall as a native command is always UTF-8
 155
 156
 157 def nsinstall(argv):
 158     return _nsinstall_internal([six.ensure_text(arg, "utf-8") for arg in argv])
 159
 160
 161 if __name__ == '__main__':
 162     sys.exit(_nsinstall_internal(sys.argv[1:]))