Merge "Update GetTargetFilesZipForCustomImagesUpdates zip2zip call" am:...

  Returns:

    The filename of a target-files.zip which has renamed the custom images in

    the IMAGS/ to their partition names.

    the IMAGES/ to their partition names.

  """

  # Use zip2zip to avoid extracting the zipfile.

  # First pass: use zip2zip to copy the target files contents, excluding

  # the "custom" images that will be replaced.

  target_file = common.MakeTempFile(prefix="targetfiles-", suffix=".zip")

  cmd = ['zip2zip', '-i', input_file, '-o', target_file]

  with zipfile.ZipFile(input_file, allowZip64=True) as input_zip:

    namelist = input_zip.namelist()

  # Write {custom_image}.img as {custom_partition}.img.

  images = {}

  for custom_partition, custom_image in custom_images.items():

    default_custom_image = '{}.img'.format(custom_partition)

    if default_custom_image != custom_image:

      logger.info("Update custom partition '%s' with '%s'",

                  custom_partition, custom_image)

      # Default custom image need to be deleted first.

      namelist.remove('IMAGES/{}'.format(default_custom_image))

      # IMAGES/{custom_image}.img:IMAGES/{custom_partition}.img.

      cmd.extend(['IMAGES/{}:IMAGES/{}'.format(custom_image,

                                               default_custom_image)])

  cmd.extend(['{}:{}'.format(name, name) for name in namelist])

      src = 'IMAGES/' + custom_image

      dst = 'IMAGES/' + default_custom_image

      cmd.extend(['-x', dst])

      images[dst] = src

  common.RunAndCheckOutput(cmd)

  # Second pass: write {custom_image}.img as {custom_partition}.img.

  with zipfile.ZipFile(input_file, allowZip64=True) as input_zip:

    with zipfile.ZipFile(target_file, 'a', allowZip64=True) as output_zip:

      for dst, src in images.items():

        data = input_zip.read(src)

        logger.info("Update custom partition '%s'", dst)

        common.ZipWriteStr(output_zip, dst, data)

      output_zip.close()

  return target_file