| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2015-2019 The Khronos Group Inc. |
| # Copyright (c) 2015-2019 Valve Corporation |
| # Copyright (c) 2015-2019 LunarG, Inc. |
| # Copyright (c) 2015-2019 Google Inc. |
| # |
| # 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. |
| # |
| # Author: Cort Stratton <cort@google.com> |
| # Author: Jean-Francois Roy <jfroy@google.com> |
| |
| import argparse |
| import hashlib |
| import subprocess |
| import uuid |
| import json |
| |
| def generate(symbol_name, commit_id, output_header_file): |
| # Write commit ID to output header file |
| with open(output_header_file, "w") as header_file: |
| # File Comment |
| file_comment = '// *** THIS FILE IS GENERATED - DO NOT EDIT ***\n' |
| file_comment += '// See external_revision_generator.py for modifications\n' |
| header_file.write(file_comment) |
| # Copyright Notice |
| copyright = '' |
| copyright += '\n' |
| copyright += '/***************************************************************************\n' |
| copyright += ' *\n' |
| copyright += ' * Copyright (c) 2015-2019 The Khronos Group Inc.\n' |
| copyright += ' * Copyright (c) 2015-2019 Valve Corporation\n' |
| copyright += ' * Copyright (c) 2015-2019 LunarG, Inc.\n' |
| copyright += ' * Copyright (c) 2015-2019 Google Inc.\n' |
| copyright += ' *\n' |
| copyright += ' * Licensed under the Apache License, Version 2.0 (the "License");\n' |
| copyright += ' * you may not use this file except in compliance with the License.\n' |
| copyright += ' * You may obtain a copy of the License at\n' |
| copyright += ' *\n' |
| copyright += ' * http://www.apache.org/licenses/LICENSE-2.0\n' |
| copyright += ' *\n' |
| copyright += ' * Unless required by applicable law or agreed to in writing, software\n' |
| copyright += ' * distributed under the License is distributed on an "AS IS" BASIS,\n' |
| copyright += ' * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n' |
| copyright += ' * See the License for the specific language governing permissions and\n' |
| copyright += ' * limitations under the License.\n' |
| copyright += ' *\n' |
| copyright += ' * Author: Chris Forbes <chrisforbes@google.com>\n' |
| copyright += ' * Author: Cort Stratton <cort@google.com>\n' |
| copyright += ' *\n' |
| copyright += ' ****************************************************************************/\n' |
| header_file.write(copyright) |
| # Contents |
| contents = '#pragma once\n\n' |
| contents += '#define %s "%s"\n' % (symbol_name, commit_id) |
| header_file.write(contents) |
| |
| def get_commit_id_from_git(git_binary, source_dir): |
| value = subprocess.check_output([git_binary, "rev-parse", "HEAD"], cwd=source_dir).decode('utf-8').strip() |
| return value |
| |
| def is_sha1(str): |
| try: str_as_int = int(str, 16) |
| except ValueError: return False |
| return len(str) == 40 |
| |
| def get_commit_id_from_file(rev_file): |
| with open(rev_file, 'r') as rev_stream: |
| rev_contents = rev_stream.read() |
| rev_contents_stripped = rev_contents.strip() |
| if is_sha1(rev_contents_stripped): |
| return rev_contents_stripped; |
| # otherwise, SHA1 the entire (unstripped) file contents |
| sha1 = hashlib.sha1(); |
| sha1.update(rev_contents.encode('utf-8')) |
| return sha1.hexdigest() |
| |
| def get_commit_id_from_uuid(): |
| unique_uuid = str(uuid.uuid4()) |
| sha1 = hashlib.sha1(); |
| sha1.update(unique_uuid.encode()) |
| return sha1.hexdigest() |
| |
| def get_commit_id_from_json(json_file, json_keys): |
| with open(json_file) as json_stream: |
| json_data = json.load(json_stream) |
| for key in json_keys.split(','): |
| if type(json_data) == list: |
| json_data = json_data[int(key)] |
| else: |
| json_data = json_data[key] |
| return json_data |
| |
| def main(): |
| parser = argparse.ArgumentParser() |
| rev_method_group = parser.add_mutually_exclusive_group(required=True) |
| rev_method_group.add_argument("--git_dir", metavar="SOURCE_DIR", help="git working copy directory") |
| rev_method_group.add_argument("--rev_file", metavar="REVISION_FILE", help="source revision file path (must contain a SHA1 hash") |
| rev_method_group.add_argument("--from_uuid", action='store_true', help="base SHA1 on a dynamically generated UUID") |
| rev_method_group.add_argument("--json_file", metavar="JSON_FILE", help="path to json file") |
| parser.add_argument("-s", "--symbol_name", metavar="SYMBOL_NAME", required=True, help="C symbol name") |
| parser.add_argument("-o", "--output_header_file", metavar="OUTPUT_HEADER_FILE", required=True, help="output header file path") |
| parser.add_argument("--json_keys", action='store', metavar="JSON_KEYS", help="comma-separated list of keys specifying SHA1 location in root json object for --json_file option") |
| args = parser.parse_args() |
| |
| if ('json_file' in args) != ('json_keys' in args): |
| parser.error('--json_file and --json_keys must be provided together') |
| |
| # We can either parse the latest Git commit ID out of the specified repository (preferred where possible), |
| # or computing the SHA1 hash of the contents of a file passed on the command line and (where necessary -- |
| # e.g. when building the layers outside of a Git environment). |
| if args.git_dir is not None: |
| # Extract commit ID from the specified source directory |
| try: |
| commit_id = get_commit_id_from_git('git', args.git_dir) |
| except WindowsError: |
| # Call git.bat on Windows for compatibility. |
| commit_id = get_commit_id_from_git('git.bat', args.git_dir) |
| elif args.rev_file is not None: |
| # Read the commit ID from a file. |
| commit_id = get_commit_id_from_file(args.rev_file) |
| elif args.json_file is not None: |
| commit_id = get_commit_id_from_json(args.json_file, args.json_keys) |
| elif args.from_uuid: |
| commit_id = get_commit_id_from_uuid() |
| |
| if not is_sha1(commit_id): |
| raise ValueError("commit ID for " + args.symbol_name + " must be a SHA1 hash.") |
| |
| generate(args.symbol_name, commit_id, args.output_header_file) |
| |
| if __name__ == '__main__': |
| main() |