| #!/usr/bin/python |
| |
| # Copyright (C) 2018 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """Drives mojom typemapping generator. |
| |
| Usage: |
| |
| % python libchrome_tools/mojom_generate_type_mappings.py \ |
| --output ${output_type_mapping_file_path} \ |
| ${list of .typemap files} |
| """ |
| |
| import argparse |
| import os |
| import subprocess |
| import sys |
| |
| |
| try: |
| # ../build cannot be loaded if cwd is other directories |
| # e.g. when emerge libchrome |
| sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), '..')) |
| from build import gn_helpers |
| except ImportError: |
| # gn_helpers is located at the same directory when building other packages |
| # in system directory. |
| import gn_helpers |
| |
| # script in libchrome repositority is used when emerge libchrome. |
| _GENERATE_TYPE_MAPPINGS_PATH = os.path.join( |
| os.path.dirname(__file__), |
| '../mojo/public/tools/bindings/generate_type_mappings.py') |
| if not os.path.isfile(_GENERATE_TYPE_MAPPINGS_PATH): |
| # use system script in the same dir when building other packages. |
| _GENERATE_TYPE_MAPPINGS_PATH = os.path.join( |
| os.path.dirname(__file__), |
| 'generate_type_mappings.py') |
| |
| def _read_typemap_config(path): |
| """Reads .typemap file. |
| |
| Args: |
| path: File path to the .typemap location. |
| |
| Returns: |
| A dictionary holding values in .typemap file. |
| """ |
| |
| with open(path) as f: |
| # gn_helpers does not handle comment lines. |
| content = [line for line in f if not line.strip().startswith('#')] |
| return gn_helpers.FromGNArgs(''.join(content)) |
| |
| |
| def _generate_type_mappings(input_paths, output): |
| """Generates __type_mappings file from given .typemap files. |
| |
| Builds a command line to run generate_type_mappings.py, and executes it. |
| |
| Args: |
| input_paths: a list of file paths for .typemap files. |
| output: a path to output __type_mappings file. |
| """ |
| command = [_GENERATE_TYPE_MAPPINGS_PATH, '--output', output] |
| |
| # TODO(hidehiko): Add dependency handling. |
| |
| for path in input_paths: |
| typemap_config = _read_typemap_config(path) |
| command.append('--start-typemap') |
| for public_header in typemap_config.get('public_headers', []): |
| command.append('public_headers=' + public_header) |
| for traits_header in typemap_config.get('traits_headers', []): |
| command.append('traits_headers=' + traits_header) |
| for type_mapping in typemap_config.get('type_mappings', []): |
| command.append('type_mappings=' + type_mapping) |
| |
| subprocess.check_call(command) |
| |
| |
| def _parse_args(): |
| parser = argparse.ArgumentParser() |
| parser.add_argument('--output', help='Output file path') |
| parser.add_argument('input_paths', metavar="INPUT-PATH", nargs='+', |
| help='Input typemap files.') |
| return parser.parse_args() |
| |
| |
| def main(): |
| args = _parse_args() |
| _generate_type_mappings(args.input_paths, args.output) |
| |
| |
| if __name__ == '__main__': |
| main() |