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