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#!/usr/bin/env python
# Copyright 2025 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
'''Generate an extension manifest based on a template.'''
import argparse
import io
import json
import os
import sys
src_dir_path = os.path.normpath(
os.path.join(os.path.abspath(__file__), *[os.path.pardir] * 6))
jinja2_path = os.path.normpath(
os.path.join(src_dir_path, 'third_party'))
nom_path = os.path.normpath(
os.path.join(src_dir_path, 'tools/json_comment_eater'))
version_py_path = os.path.normpath(
os.path.join(src_dir_path, 'build/util'))
sys.path.insert(0, jinja2_path)
sys.path.insert(0, nom_path)
sys.path.insert(0, version_py_path)
import jinja2
import json_comment_eater
import version
def process_jinja_template(input_file, output_file, context):
""" Processes a jinja2 template.
Uses Jinja2 to convert a template into an output file.
Args:
input_file: path to template file as string.
output_file: path to output file as string.
context: variables available in the template as dict.
"""
(template_path, template_name) = os.path.split(input_file)
env = jinja2.Environment(
loader=jinja2.FileSystemLoader(template_path), trim_blocks=True)
template = env.get_template(template_name)
rendered = template.render(context)
rendered_without_comments = json_comment_eater.Nom(rendered)
# Simply for validation.
json.loads(rendered_without_comments)
with io.open(output_file, 'w', encoding='utf-8') as manifest_file:
manifest_file.write(rendered_without_comments)
def main():
parser = argparse.ArgumentParser()
parser.add_argument(
'-o',
'--output_manifest',
help='File to place generated manifest')
parser.add_argument(
'--is_manifest_v3',
default='0',
help='Whether to generate a manifest using manifest version 3')
parser.add_argument('input_file')
args = parser.parse_args()
if args.output_manifest is None:
print('--output_manifest option must be specified', file=sys.stderr)
sys.exit(1)
context = {'is_manifest_v3': args.is_manifest_v3}
process_jinja_template(args.input_file, args.output_manifest, context)
if __name__ == '__main__':
main()
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