108 lines
3.4 KiB
Python
108 lines
3.4 KiB
Python
|
#!/usr/bin/env python
|
||
|
|
# Copyright (c) 2012 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.
|
||
|
|
|
||
|
|
"""
|
||
|
|
Generates shim headers that mirror the directory structure of bundled headers,
|
||
|
|
but just forward to the system ones.
|
||
|
|
|
||
|
|
This allows seamless compilation against system headers with no changes
|
||
|
|
to our source code.
|
||
|
|
"""
|
||
|
|
|
||
|
|
|
||
|
|
import optparse
|
||
|
|
import os.path
|
||
|
|
import sys
|
||
|
|
|
||
|
|
|
||
|
|
SHIM_TEMPLATE = """
|
||
|
|
#if defined(OFFICIAL_BUILD)
|
||
|
|
#error shim headers must not be used in official builds!
|
||
|
|
#endif
|
||
|
|
"""
|
||
|
|
|
||
|
|
|
||
|
|
def GeneratorMain(argv):
|
||
|
|
parser = optparse.OptionParser()
|
||
|
|
parser.add_option('--headers-root', action='append')
|
||
|
|
parser.add_option('--define', action='append')
|
||
|
|
parser.add_option('--output-directory')
|
||
|
|
parser.add_option('--prefix', default='')
|
||
|
|
parser.add_option('--use-include-next', action='store_true')
|
||
|
|
parser.add_option('--outputs', action='store_true')
|
||
|
|
parser.add_option('--generate', action='store_true')
|
||
|
|
|
||
|
|
options, args = parser.parse_args(argv)
|
||
|
|
|
||
|
|
if not options.headers_root:
|
||
|
|
parser.error('Missing --headers-root parameter.')
|
||
|
|
if not options.output_directory:
|
||
|
|
parser.error('Missing --output-directory parameter.')
|
||
|
|
if not args:
|
||
|
|
parser.error('Missing arguments - header file names.')
|
||
|
|
|
||
|
|
source_tree_root = os.path.abspath(
|
||
|
|
os.path.join(os.path.dirname(__file__), '..', '..'))
|
||
|
|
|
||
|
|
for root in options.headers_root:
|
||
|
|
target_directory = os.path.join(
|
||
|
|
options.output_directory,
|
||
|
|
os.path.relpath(root, source_tree_root))
|
||
|
|
if options.generate and not os.path.exists(target_directory):
|
||
|
|
os.makedirs(target_directory)
|
||
|
|
|
||
|
|
for header_spec in args:
|
||
|
|
if ';' in header_spec:
|
||
|
|
(header_filename,
|
||
|
|
include_before,
|
||
|
|
include_after) = header_spec.split(';', 2)
|
||
|
|
else:
|
||
|
|
header_filename = header_spec
|
||
|
|
include_before = ''
|
||
|
|
include_after = ''
|
||
|
|
if options.outputs:
|
||
|
|
yield os.path.join(target_directory, header_filename)
|
||
|
|
if options.generate:
|
||
|
|
with open(os.path.join(target_directory, header_filename), 'w') as f:
|
||
|
|
f.write(SHIM_TEMPLATE)
|
||
|
|
|
||
|
|
if options.define:
|
||
|
|
for define in options.define:
|
||
|
|
key, value = define.split('=', 1)
|
||
|
|
# This non-standard push_macro extension is supported
|
||
|
|
# by compilers we support (GCC, clang).
|
||
|
|
f.write('#pragma push_macro("%s")\n' % key)
|
||
|
|
f.write('#undef %s\n' % key)
|
||
|
|
f.write('#define %s %s\n' % (key, value))
|
||
|
|
|
||
|
|
if include_before:
|
||
|
|
for header in include_before.split(':'):
|
||
|
|
f.write('#include %s\n' % header)
|
||
|
|
|
||
|
|
include_target = options.prefix + header_filename
|
||
|
|
if options.use_include_next:
|
||
|
|
f.write('#include_next <%s>\n' % include_target)
|
||
|
|
else:
|
||
|
|
f.write('#include <%s>\n' % include_target)
|
||
|
|
|
||
|
|
if include_after:
|
||
|
|
for header in include_after.split(':'):
|
||
|
|
f.write('#include %s\n' % header)
|
||
|
|
|
||
|
|
if options.define:
|
||
|
|
for define in options.define:
|
||
|
|
key, value = define.split('=', 1)
|
||
|
|
# This non-standard pop_macro extension is supported
|
||
|
|
# by compilers we support (GCC, clang).
|
||
|
|
f.write('#pragma pop_macro("%s")\n' % key)
|
||
|
|
|
||
|
|
|
||
|
|
def DoMain(argv):
|
||
|
|
return '\n'.join(GeneratorMain(argv))
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
DoMain(sys.argv[1:])
|