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84 lines
2.8 KiB
Python
Executable File
84 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright 2014 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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"""
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Clang tools on Windows are still a bit busted. The tooling can't handle
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backslashes in paths, doesn't understand how to read .rsp files, etc. In
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addition, ninja generates compile commands prefixed with the ninja msvc helper,
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which also confuses clang. This script generates a compile DB that should mostly
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work until clang tooling can be improved upstream.
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"""
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import os
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import re
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import json
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import shlex
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import subprocess
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import sys
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_NINJA_MSVC_WRAPPER = re.compile('ninja -t msvc -e .+? -- ')
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_RSP_RE = re.compile(r' (@(.+?\.rsp)) ')
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def _ProcessEntry(e):
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# Strip off the ninja -t msvc wrapper.
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e['command'] = _NINJA_MSVC_WRAPPER.sub('', e['command'])
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# Prepend --driver-mode=cl to the command's arguments.
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# Escape backslashes so shlex doesn't try to interpret them.
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escaped_command = e['command'].replace('\\', '\\\\')
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split_command = shlex.split(escaped_command)
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e['command'] = ' '.join(
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split_command[:1] + ['--driver-mode=cl'] + split_command[1:])
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# Expand the contents of the response file, if any.
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# http://llvm.org/bugs/show_bug.cgi?id=21634
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try:
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match = _RSP_RE.search(e['command'])
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rsp_path = os.path.join(e['directory'], match.group(2))
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rsp_contents = file(rsp_path).read()
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e['command'] = ''.join([
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e['command'][:match.start(1)],
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rsp_contents,
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e['command'][match.end(1):]])
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except IOError:
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pass
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# TODO(dcheng): This should be implemented in Clang tooling.
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# http://llvm.org/bugs/show_bug.cgi?id=19687
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# Finally, use slashes instead of backslashes to avoid bad escaping by the
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# tooling. This should really only matter for command, but we do it for all
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# keys for consistency.
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e['directory'] = e['directory'].replace('\\', '/')
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e['command'] = e['command'].replace('\\', '/')
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e['file'] = e['file'].replace('\\', '/')
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return e
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def main(argv):
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# First, generate the compile database.
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print 'Generating compile DB with ninja...'
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compile_db_as_json = subprocess.check_output(shlex.split(
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'ninja -C out/Debug -t compdb cc cxx objc objcxx'))
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compile_db = json.loads(compile_db_as_json)
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print 'Read in %d entries from the compile db' % len(compile_db)
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compile_db = [_ProcessEntry(e) for e in compile_db]
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original_length = len(compile_db)
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# Filter out NaCl stuff. The clang tooling chokes on them.
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compile_db = [e for e in compile_db if '_nacl.cc.pdb' not in e['command']
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and '_nacl_win64.cc.pdb' not in e['command']]
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print 'Filtered out %d entries...' % (original_length - len(compile_db))
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f = file('out/Debug/compile_commands.json', 'w')
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f.write(json.dumps(compile_db, indent=2))
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print 'Done!'
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if __name__ == '__main__':
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sys.exit(main(sys.argv[1:]))
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