config/nsinstall.py
author Emilio Cobos Álvarez <emilio@crisal.io>
Sun, 17 Dec 2017 22:29:10 +0100
changeset 396857 13faabcf8e965cca857e3cc8fdbea289a09c7ea0
parent 308936 9c5103b414491be921f00ef2210968d5b6c3d0a9
child 419629 fba6f974041a3d3c22ef95c44f6e4262e8e5c52f
permissions -rwxr-xr-x
Bug 1425769: Base class for ShadowRoot and Document to manage style state. r=smaug This also removes some confusing comments around nsIDocument regarding some kind of "special" stylesheets, which don't seem to exist anymore, and consolidates StyleSheetList so that we only have one implementation. I think that fixes a potential leak on the shadow root code (even though the API is v0 only), given the pointer from the ShadowRootStyleSheetList to the ShadowRoot wasn't being CCd. Also, more stuff could be renamed, methods removed, etc, feel free to suggest more cleanup, I've done mostly the minimal. Next steps are moving the stylesets there and stop using the proto binding sheet list / resources. MozReview-Commit-ID: D9hnDgPQAS5

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# This is a partial python port of nsinstall.
# It's intended to be used when there's no natively compile nsinstall
# available, and doesn't intend to be fully equivalent.
# Its major use is for l10n repackaging on systems that don't have
# a full build environment set up.
# The basic limitation is, it doesn't even try to link and ignores
# all related options.
from __future__ import print_function
from optparse import OptionParser
import mozfile
import os
import os.path
import sys
import shutil
import stat

def _nsinstall_internal(argv):
  usage = "usage: %prog [options] arg1 [arg2 ...] target-directory"
  p = OptionParser(usage=usage)

  p.add_option('-D', action="store_true",
               help="Create a single directory only")
  p.add_option('-t', action="store_true",
               help="Preserve time stamp")
  p.add_option('-m', action="store",
               help="Set mode", metavar="mode")
  p.add_option('-d', action="store_true",
               help="Create directories in target")
  p.add_option('-R', action="store_true",
               help="Use relative symbolic links (ignored)")
  p.add_option('-L', action="store", metavar="linkprefix",
               help="Link prefix (ignored)")
  p.add_option('-X', action="append", metavar="file",
               help="Ignore a file when installing a directory recursively.")

  # The remaining arguments are not used in our tree, thus they're not
  # implented.
  def BadArg(option, opt, value, parser):
    parser.error('option not supported: {0}'.format(opt))

  p.add_option('-C', action="callback", metavar="CWD",
               callback=BadArg,
               help="NOT SUPPORTED")
  p.add_option('-o', action="callback", callback=BadArg,
               help="Set owner (NOT SUPPORTED)", metavar="owner")
  p.add_option('-g', action="callback", callback=BadArg,
               help="Set group (NOT SUPPORTED)", metavar="group")

  (options, args) = p.parse_args(argv)

  if options.m:
    # mode is specified
    try:
      options.m = int(options.m, 8)
    except:
      sys.stderr.write('nsinstall: {0} is not a valid mode\n'
                       .format(options.m))
      return 1

  # just create one directory?
  def maybe_create_dir(dir, mode, try_again):
    dir = os.path.abspath(dir)
    if os.path.exists(dir):
      if not os.path.isdir(dir):
        print('nsinstall: {0} is not a directory'.format(dir), file=sys.stderr)
        return 1
      if mode:
        os.chmod(dir, mode)
      return 0

    try:
      if mode:
        os.makedirs(dir, mode)
      else:
        os.makedirs(dir)
    except Exception as e:
      # We might have hit EEXIST due to a race condition (see bug 463411) -- try again once
      if try_again:
        return maybe_create_dir(dir, mode, False)
      print("nsinstall: failed to create directory {0}: {1}".format(dir, e))
      return 1
    else:
      return 0

  if options.X:
    options.X = [os.path.abspath(p) for p in options.X]

  if options.D:
    return maybe_create_dir(args[0], options.m, True)

  # nsinstall arg1 [...] directory
  if len(args) < 2:
    p.error('not enough arguments')

  def copy_all_entries(entries, target):
    for e in entries:
      e = os.path.abspath(e)
      if options.X and e in options.X:
        continue

      dest = os.path.join(target, os.path.basename(e))
      dest = os.path.abspath(dest)
      handleTarget(e, dest)
      if options.m:
        os.chmod(dest, options.m)

  # set up handler
  if options.d:
    # we're supposed to create directories
    def handleTarget(srcpath, targetpath):
      # target directory was already created, just use mkdir
      os.mkdir(targetpath)
  else:
    # we're supposed to copy files
    def handleTarget(srcpath, targetpath):
      if os.path.isdir(srcpath):
        if not os.path.exists(targetpath):
          os.mkdir(targetpath)
        entries = [os.path.join(srcpath, e) for e in os.listdir(srcpath)]
        copy_all_entries(entries, targetpath)
        # options.t is not relevant for directories
        if options.m:
          os.chmod(targetpath, options.m)
      else:
        if os.path.exists(targetpath):
          if sys.platform == "win32":
            mozfile.remove(targetpath)
          else:
            os.remove(targetpath)
        if options.t:
          shutil.copy2(srcpath, targetpath)
        else:
          shutil.copy(srcpath, targetpath)

  # the last argument is the target directory
  target = args.pop()
  # ensure target directory (importantly, we do not apply a mode to the directory
  # because we want to copy files into it and the mode might be read-only)
  rv = maybe_create_dir(target, None, True)
  if rv != 0:
    return rv

  copy_all_entries(args, target)
  return 0

# nsinstall as a native command is always UTF-8
def nsinstall(argv):
  return _nsinstall_internal([unicode(arg, "utf-8") for arg in argv])

if __name__ == '__main__':
  # sys.argv corrupts characters outside the system code page on Windows
  # <http://bugs.python.org/issue2128>. Use ctypes instead. This is also
  # useful because switching to Unicode strings makes python use the wide
  # Windows APIs, which is what we want here since the wide APIs normally do a
  # better job at handling long paths and such.
  if sys.platform == "win32":
    import ctypes
    from ctypes import wintypes
    GetCommandLine = ctypes.windll.kernel32.GetCommandLineW
    GetCommandLine.argtypes = []
    GetCommandLine.restype = wintypes.LPWSTR

    CommandLineToArgv = ctypes.windll.shell32.CommandLineToArgvW
    CommandLineToArgv.argtypes = [wintypes.LPWSTR, ctypes.POINTER(ctypes.c_int)]
    CommandLineToArgv.restype = ctypes.POINTER(wintypes.LPWSTR)

    argc = ctypes.c_int(0)
    argv_arr = CommandLineToArgv(GetCommandLine(), ctypes.byref(argc))
    # The first argv will be "python", the second will be the .py file
    argv = argv_arr[1:argc.value]
  else:
    # For consistency, do it on Unix as well
    if sys.stdin.encoding is not None:
      argv = [unicode(arg, sys.stdin.encoding) for arg in sys.argv]
    else:
      argv = [unicode(arg) for arg in sys.argv]

  sys.exit(_nsinstall_internal(argv[1:]))