3pp/protobuf-cpp-21/fetch.py

#!/usr/bin/env python3
# Copyright 2019 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import argparse
import json
import sys


# Protobuf v21 is no longer being updated, so freeze the release version.
LATEST = '21.12'


def do_latest():
  print(LATEST)


def get_download_url():
  print(
      json.dumps({
          # This URL corresponds to the frozen release version LATEST.
          "url": [
              "https://github.com/protocolbuffers/protobuf/releases/download/v21.12/protobuf-cpp-3.21.12.zip"
          ],
          "ext": ".zip"
      }))


def main():
  ap = argparse.ArgumentParser()
  sub = ap.add_subparsers(dest='action', required=True)

  latest = sub.add_parser("latest")
  latest.set_defaults(func=lambda _opts: do_latest())

  download = sub.add_parser("get_url")
  download.set_defaults(
      func=lambda opts: get_download_url())

  opts = ap.parse_args()
  return opts.func(opts)


if __name__ == '__main__':
  sys.exit(main())