create_extracts.py 文件源码

def process_extract(extract):

        extract_file = os.path.join(target_dir, extract.extract + '.mbtiles')
        print('Create extract {}'.format(extract_file))

        # Instead of patching copy over the patch source as target and
        # write directly to it (since that works concurrently).
        patch_src = args['--patch-from']
        if patch_src:
            print('Use patch from {} as base'.format(patch_src))
            shutil.copyfile(patch_src, extract_file)

        try:
            create_extract(extract, source_file, extract_file)
        except subprocess.CalledProcessError as e:
            # Failing extracts should not interrupt
            # the entire process
            print(e, file=sys.stderr)
            return

        print('Update metadata {}'.format(extract_file))
        update_metadata(extract_file, extract.metadata(extract_file))