gam.py 文件源码

def doGAMCheckForUpdates(forceCheck=False):
  import calendar

  def _gamLatestVersionNotAvailable():
    if forceCheck:
      systemErrorExit(NETWORK_ERROR_RC, Msg.GAM_LATEST_VERSION_NOT_AVAILABLE)

  current_version = __version__
  now_time = calendar.timegm(time.gmtime())
  if forceCheck:
    check_url = GAM_ALL_RELEASES # includes pre-releases
  else:
    last_check_time_str = readFile(GM.Globals[GM.LAST_UPDATE_CHECK_TXT], continueOnError=True, displayError=False)
    last_check_time = int(last_check_time_str) if last_check_time_str and last_check_time_str.isdigit() else 0
    if last_check_time > now_time-604800:
      return
    check_url = GAM_LATEST_RELEASE # latest full release
  try:
    _, c = httplib2.Http(disable_ssl_certificate_validation=GC.Values[GC.NO_VERIFY_SSL]).request(check_url, u'GET', headers={u'Accept': u'application/vnd.github.v3.text+json'})
    try:
      release_data = json.loads(c)
    except ValueError:
      _gamLatestVersionNotAvailable()
      return
    if isinstance(release_data, list):
      release_data = release_data[0] # only care about latest release
    if not isinstance(release_data, dict) or u'tag_name' not in release_data:
      _gamLatestVersionNotAvailable()
      return
    latest_version = release_data[u'tag_name']
    if latest_version[0].lower() == u'v':
      latest_version = latest_version[1:]
    if forceCheck or (latest_version > current_version):
      printKeyValueList([u'Version Check', None])
      Ind.Increment()
      printKeyValueList([u'Current', current_version])
      printKeyValueList([u' Latest', latest_version])
      Ind.Decrement()
    if latest_version <= current_version:
      writeFile(GM.Globals[GM.LAST_UPDATE_CHECK_TXT], str(now_time), continueOnError=True, displayError=forceCheck)
      return
    announcement = release_data.get(u'body_text', u'No details about this release')
    writeStderr(u'\nGAM %s release notes:\n\n' % latest_version)
    writeStderr(announcement)
    try:
      printLine(Msg.HIT_CONTROL_C_TO_UPDATE)
      time.sleep(15)
    except KeyboardInterrupt:
      import webbrowser
      webbrowser.open(release_data[u'html_url'])
      printLine(Msg.GAM_EXITING_FOR_UPDATE)
      sys.exit(0)
    writeFile(GM.Globals[GM.LAST_UPDATE_CHECK_TXT], str(now_time), continueOnError=True, displayError=forceCheck)
    return
  except (httplib2.HttpLib2Error, httplib2.ServerNotFoundError, httplib2.CertificateValidationUnsupported):
    return