bazel_rules_fuchsia/fuchsia/tools/rebase_image_json.py

# Copyright 2022 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Rebases relative paths in images.json from the assembly working directory

into absolute paths.
"""

import argparse
import json
import os


def parse_args():
    """Parses command-line arguments."""
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "--image-json-path",
        help="Path to image json",
        required=True,
    )
    parser.add_argument(
        "--output",
        help="Path to output images.json file",
        required=True,
    )
    return parser.parse_args()


def main():
    args = parse_args()
    image_json_path = args.image_json_path
    with open(image_json_path, "r") as f:
        images = json.load(f)

    images_manifest = []
    for image in images:
        newimage = image.copy()
        newimage["path"] = os.path.abspath(newimage["path"])
        images_manifest.append(newimage)
    with open(args.output, "w") as f:
        json.dump(images_manifest, f, indent=2)


if __name__ == "__main__":
    main()