tools/run_android_emulator

#!/usr/bin/env python
# Copyright (C) 2017 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.

import argparse
import os
import shutil
import sys


def Main():
  parser = argparse.ArgumentParser()
  parser.add_argument('--verbose', '-v', action='store_true')
  parser.add_argument('--pid', help='(optional) save pid into given file')
  parser.add_argument('image', help='arm|arm64 (see //tools/android_emulators)')
  args = parser.parse_args()

  root_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
  ini = os.path.join(root_dir, 'tools', 'android_emulators', args.image + '.ini')
  assert os.path.exists(ini), 'File not found: ' + ini

  avd_dir = os.path.join(root_dir, 'buildtools', 'emulator_images')
  if not os.path.exists(avd_dir):
    os.makedirs(avd_dir)

  emu_img_dir = os.path.join(avd_dir, args.image + '.avd')
  if not os.path.exists(emu_img_dir):
    os.makedirs(emu_img_dir)
  shutil.copyfile(ini, os.path.join(emu_img_dir, 'config.ini'))

  with open(os.path.join(avd_dir, args.image + '.ini'), 'w') as f:
    f.write('path=' + emu_img_dir)

  sdk_dir = os.path.join(root_dir, 'buildtools', 'android_sdk')
  env = {
      # Travis CI doesn't set this and causes the emulator to fallback in
      # 32-bit mode with a "Cannot decide host bitness because $SHELL" error.
      'SHELL': '/bin/bash',
      'ANDROID_EMULATOR_DEBUG': '1' if args.verbose else '0',
      'ANDROID_SDK_ROOT': sdk_dir,
      'ANDROID_AVD_HOME': avd_dir,
      'DYLD_LIBRARY_PATH': os.path.join(sdk_dir, 'tools', 'lib64', 'qt', 'lib'),
  }
  emulator_bin = os.path.join(sdk_dir, 'tools', 'emulator')
  emulator_args = ['-no-window', '-no-snapshot',  '-gpu', 'off', '-wipe-data',
                   '-avd', args.image]
  print '\n'.join('='.join(x) for x in env.items())
  print ' '.join([emulator_bin] + emulator_args)
  if args.pid:
    with open(args.pid, 'w') as f:
      f.write(str(os.getpid()))
  os.execve(emulator_bin, [emulator_bin] + emulator_args, env)


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