64 строки
2.5 KiB
Python
64 строки
2.5 KiB
Python
# Copyright 2015 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Runs the Microsoft Message Compiler (mc.exe). This Python adapter is for the
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# GN build, which can only run Python and not native binaries.
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#
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# Usage: message_compiler.py <environment_file> [<args to mc.exe>*]
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import os
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import subprocess
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import sys
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def main():
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# Read the environment block from the file. This is stored in the format used
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# by CreateProcess. Drop last 2 NULs, one for list terminator, one for
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# trailing vs. separator.
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env_pairs = open(sys.argv[1]).read()[:-2].split('\0')
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env_dict = dict([item.split('=', 1) for item in env_pairs])
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# mc writes to stderr, so this explicitly redirects to stdout and eats it.
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try:
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# This needs shell=True to search the path in env_dict for the mc
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# executable.
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rest = sys.argv[2:]
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subprocess.check_output(['mc.exe'] + rest,
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env=env_dict,
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stderr=subprocess.STDOUT,
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shell=True)
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# We require all source code (in particular, the header generated here) to
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# be UTF-8. jinja can output the intermediate .mc file in UTF-8 or UTF-16LE.
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# However, mc.exe only supports Unicode via the -u flag, and it assumes when
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# that is specified that the input is UTF-16LE (and errors out on UTF-8
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# files, assuming they're ANSI). Even with -u specified and UTF16-LE input,
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# it generates an ANSI header, and includes broken versions of the message
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# text in the comment before the value. To work around this, for any invalid
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# // comment lines, we simply drop the line in the header after building it.
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header_dir = None
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input_file = None
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for i, arg in enumerate(rest):
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if arg == '-h' and len(rest) > i + 1:
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assert header_dir == None
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header_dir = rest[i + 1]
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elif arg.endswith('.mc') or arg.endswith('.man'):
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assert input_file == None
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input_file = arg
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if header_dir:
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header_file = os.path.join(
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header_dir, os.path.splitext(os.path.basename(input_file))[0] + '.h')
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header_contents = []
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with open(header_file, 'rb') as f:
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for line in f.readlines():
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if line.startswith('//') and '?' in line:
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continue
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header_contents.append(line)
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with open(header_file, 'wb') as f:
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f.write(''.join(header_contents))
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except subprocess.CalledProcessError as e:
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print e.output
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sys.exit(e.returncode)
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if __name__ == '__main__':
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main()
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