Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 276 insertions, 0 deletions

diff --git a/third_party/libwebrtc/build/toolchain/win/rc/rc.py b/third_party/libwebrtc/build/toolchain/win/rc/rc.py
new file mode 100755
index 0000000000..2ab41225fb
--- /dev/null
+++ b/third_party/libwebrtc/build/toolchain/win/rc/rc.py
@@ -0,0 +1,276 @@
+#!/usr/bin/env python
+# Copyright 2017 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""usage: rc.py [options] input.res
+A resource compiler for .rc files.
+
+options:
+-h, --help     Print this message.
+-I<dir>        Add include path, used for both headers and resources.
+-imsvc<dir>    Add system include path, used for preprocessing only.
+/winsysroot<d> Set winsysroot, used for preprocessing only.
+-D<sym>        Define a macro for the preprocessor.
+/fo<out>       Set path of output .res file.
+/nologo        Ignored (rc.py doesn't print a logo by default).
+/showIncludes  Print referenced header and resource files."""
+
+from __future__ import print_function
+from collections import namedtuple
+import codecs
+import os
+import re
+import subprocess
+import sys
+import tempfile
+
+
+THIS_DIR = os.path.abspath(os.path.dirname(__file__))
+SRC_DIR = \
+    os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(THIS_DIR))))
+
+
+def ParseFlags():
+  """Parses flags off sys.argv and returns the parsed flags."""
+  # Can't use optparse / argparse because of /fo flag :-/
+  includes = []
+  imsvcs = []
+  winsysroot = []
+  defines = []
+  output = None
+  input = None
+  show_includes = False
+  # Parse.
+  for flag in sys.argv[1:]:
+    if flag == '-h' or flag == '--help':
+      print(__doc__)
+      sys.exit(0)
+    if flag.startswith('-I'):
+      includes.append(flag)
+    elif flag.startswith('-imsvc'):
+      imsvcs.append(flag)
+    elif flag.startswith('/winsysroot'):
+      winsysroot = [flag]
+    elif flag.startswith('-D'):
+      defines.append(flag)
+    elif flag.startswith('/fo'):
+      if output:
+        print('rc.py: error: multiple /fo flags', '/fo' + output, flag,
+              file=sys.stderr)
+        sys.exit(1)
+      output = flag[3:]
+    elif flag == '/nologo':
+      pass
+    elif flag == '/showIncludes':
+      show_includes = True
+    elif (flag.startswith('-') or
+          (flag.startswith('/') and not os.path.exists(flag))):
+      print('rc.py: error: unknown flag', flag, file=sys.stderr)
+      print(__doc__, file=sys.stderr)
+      sys.exit(1)
+    else:
+      if input:
+        print('rc.py: error: multiple inputs:', input, flag, file=sys.stderr)
+        sys.exit(1)
+      input = flag
+  # Validate and set default values.
+  if not input:
+    print('rc.py: error: no input file', file=sys.stderr)
+    sys.exit(1)
+  if not output:
+    output = os.path.splitext(input)[0] + '.res'
+  Flags = namedtuple('Flags', [
+      'includes', 'defines', 'output', 'imsvcs', 'winsysroot', 'input',
+      'show_includes'
+  ])
+  return Flags(includes=includes,
+               defines=defines,
+               output=output,
+               imsvcs=imsvcs,
+               winsysroot=winsysroot,
+               input=input,
+               show_includes=show_includes)
+
+
+def ReadInput(input):
+  """"Reads input and returns it. For UTF-16LEBOM input, converts to UTF-8."""
+  # Microsoft's rc.exe only supports unicode in the form of UTF-16LE with a BOM.
+  # Our rc binary sniffs for UTF-16LE.  If that's not found, if /utf-8 is
+  # passed, the input is treated as UTF-8.  If /utf-8 is not passed and the
+  # input is not UTF-16LE, then our rc errors out on characters outside of
+  # 7-bit ASCII.  Since the driver always converts UTF-16LE to UTF-8 here (for
+  # the preprocessor, which doesn't support UTF-16LE), our rc will either see
+  # UTF-8 with the /utf-8 flag (for UTF-16LE input), or ASCII input.
+  # This is compatible with Microsoft rc.exe.  If we wanted, we could expose
+  # a /utf-8 flag for the driver for UTF-8 .rc inputs too.
+  # TODO(thakis): Microsoft's rc.exe supports BOM-less UTF-16LE. We currently
+  # don't, but for chrome it currently doesn't matter.
+  is_utf8 = False
+  try:
+    with open(input, 'rb') as rc_file:
+      rc_file_data = rc_file.read()
+      if rc_file_data.startswith(codecs.BOM_UTF16_LE):
+        rc_file_data = rc_file_data[2:].decode('utf-16le').encode('utf-8')
+        is_utf8 = True
+  except IOError:
+    print('rc.py: failed to open', input, file=sys.stderr)
+    sys.exit(1)
+  except UnicodeDecodeError:
+    print('rc.py: failed to decode UTF-16 despite BOM', input, file=sys.stderr)
+    sys.exit(1)
+  return rc_file_data, is_utf8
+
+
+def Preprocess(rc_file_data, flags):
+  """Runs the input file through the preprocessor."""
+  clang = os.path.join(SRC_DIR, 'third_party', 'llvm-build',
+                       'Release+Asserts', 'bin', 'clang-cl')
+  # Let preprocessor write to a temp file so that it doesn't interfere
+  # with /showIncludes output on stdout.
+  if sys.platform == 'win32':
+    clang += '.exe'
+  temp_handle, temp_file = tempfile.mkstemp(suffix='.i')
+  # Closing temp_handle immediately defeats the purpose of mkstemp(), but I
+  # can't figure out how to let write to the temp file on Windows otherwise.
+  os.close(temp_handle)
+  clang_cmd = [clang, '/P', '/DRC_INVOKED', '/TC', '-', '/Fi' + temp_file]
+  if flags.imsvcs:
+    clang_cmd += ['/X']
+  if os.path.dirname(flags.input):
+    # This must precede flags.includes.
+    clang_cmd.append('-I' + os.path.dirname(flags.input))
+  if flags.show_includes:
+    clang_cmd.append('/showIncludes')
+  clang_cmd += flags.imsvcs + flags.winsysroot + flags.includes + flags.defines
+  p = subprocess.Popen(clang_cmd, stdin=subprocess.PIPE)
+  p.communicate(input=rc_file_data)
+  if p.returncode != 0:
+    sys.exit(p.returncode)
+  preprocessed_output = open(temp_file, 'rb').read()
+  os.remove(temp_file)
+
+  # rc.exe has a wacko preprocessor:
+  # https://msdn.microsoft.com/en-us/library/windows/desktop/aa381033(v=vs.85).aspx
+  # """RC treats files with the .c and .h extensions in a special manner. It
+  # assumes that a file with one of these extensions does not contain
+  # resources. If a file has the .c or .h file name extension, RC ignores all
+  # lines in the file except the preprocessor directives."""
+  # Thankfully, the Microsoft headers are mostly good about putting everything
+  # in the system headers behind `if !defined(RC_INVOKED)`, so regular
+  # preprocessing with RC_INVOKED defined works.
+  return preprocessed_output
+
+
+def RunRc(preprocessed_output, is_utf8, flags):
+  if sys.platform.startswith('linux'):
+    rc = os.path.join(THIS_DIR, 'linux64', 'rc')
+  elif sys.platform == 'darwin':
+    rc = os.path.join(THIS_DIR, 'mac', 'rc')
+  elif sys.platform == 'win32':
+    rc = os.path.join(THIS_DIR, 'win', 'rc.exe')
+  else:
+    print('rc.py: error: unsupported platform', sys.platform, file=sys.stderr)
+    sys.exit(1)
+  rc_cmd = [rc]
+  # Make sure rc-relative resources can be found:
+  if os.path.dirname(flags.input):
+    rc_cmd.append('/cd' + os.path.dirname(flags.input))
+  rc_cmd.append('/fo' + flags.output)
+  if is_utf8:
+    rc_cmd.append('/utf-8')
+  # TODO(thakis): cl currently always prints full paths for /showIncludes,
+  # but clang-cl /P doesn't.  Which one is right?
+  if flags.show_includes:
+    rc_cmd.append('/showIncludes')
+  # Microsoft rc.exe searches for referenced files relative to -I flags in
+  # addition to the pwd, so -I flags need to be passed both to both
+  # the preprocessor and rc.
+  rc_cmd += flags.includes
+  p = subprocess.Popen(rc_cmd, stdin=subprocess.PIPE)
+  p.communicate(input=preprocessed_output)
+
+  if flags.show_includes and p.returncode == 0:
+    TOOL_DIR = os.path.dirname(os.path.relpath(THIS_DIR)).replace("\\", "/")
+    # Since tool("rc") can't have deps, add deps on this script and on rc.py
+    # and its deps here, so that rc edges become dirty if rc.py changes.
+    print('Note: including file: {}/tool_wrapper.py'.format(TOOL_DIR))
+    print('Note: including file: {}/rc/rc.py'.format(TOOL_DIR))
+    print(
+        'Note: including file: {}/rc/linux64/rc.sha1'.format(TOOL_DIR))
+    print('Note: including file: {}/rc/mac/rc.sha1'.format(TOOL_DIR))
+    print(
+        'Note: including file: {}/rc/win/rc.exe.sha1'.format(TOOL_DIR))
+
+  return p.returncode
+
+
+def CompareToMsRcOutput(preprocessed_output, is_utf8, flags):
+  msrc_in = flags.output + '.preprocessed.rc'
+
+  # Strip preprocessor line markers.
+  preprocessed_output = re.sub(br'^#.*$', b'', preprocessed_output, flags=re.M)
+  if is_utf8:
+    preprocessed_output = preprocessed_output.decode('utf-8').encode('utf-16le')
+  with open(msrc_in, 'wb') as f:
+    f.write(preprocessed_output)
+
+  msrc_out = flags.output + '_ms_rc'
+  msrc_cmd = ['rc', '/nologo', '/x', '/fo' + msrc_out]
+
+  # Make sure rc-relative resources can be found. rc.exe looks for external
+  # resource files next to the file, but the preprocessed file isn't where the
+  # input was.
+  # Note that rc searches external resource files in the order of
+  # 1. next to the input file
+  # 2. relative to cwd
+  # 3. next to -I directories
+  # Changing the cwd means we'd have to rewrite all -I flags, so just add
+  # the input file dir as -I flag. That technically gets the order of 1 and 2
+  # wrong, but in Chromium's build the cwd is the gn out dir, and generated
+  # files there are in obj/ and gen/, so this difference doesn't matter in
+  # practice.
+  if os.path.dirname(flags.input):
+    msrc_cmd += [ '-I' + os.path.dirname(flags.input) ]
+
+  # Microsoft rc.exe searches for referenced files relative to -I flags in
+  # addition to the pwd, so -I flags need to be passed both to both
+  # the preprocessor and rc.
+  msrc_cmd += flags.includes
+
+  # Input must come last.
+  msrc_cmd += [ msrc_in ]
+
+  rc_exe_exit_code = subprocess.call(msrc_cmd)
+  # Assert Microsoft rc.exe and rc.py produced identical .res files.
+  if rc_exe_exit_code == 0:
+    import filecmp
+    assert filecmp.cmp(msrc_out, flags.output)
+  return rc_exe_exit_code
+
+
+def main():
+  # This driver has to do these things:
+  # 1. Parse flags.
+  # 2. Convert the input from UTF-16LE to UTF-8 if needed.
+  # 3. Pass the input through a preprocessor (and clean up the preprocessor's
+  #    output in minor ways).
+  # 4. Call rc for the heavy lifting.
+  flags = ParseFlags()
+  rc_file_data, is_utf8 = ReadInput(flags.input)
+  preprocessed_output = Preprocess(rc_file_data, flags)
+  rc_exe_exit_code = RunRc(preprocessed_output, is_utf8, flags)
+
+  # 5. On Windows, we also call Microsoft's rc.exe and check that we produced
+  #   the same output.
+  # Since Microsoft's rc has a preprocessor that only accepts 32 characters
+  # for macro names, feed the clang-preprocessed source into it instead
+  # of using ms rc's preprocessor.
+  if sys.platform == 'win32' and rc_exe_exit_code == 0:
+    rc_exe_exit_code = CompareToMsRcOutput(preprocessed_output, is_utf8, flags)
+
+  return rc_exe_exit_code
+
+
+if __name__ == '__main__':
+  sys.exit(main())