common.py 文件源码

def format_description(description, prefix, prefixes, prefix_format_func=None):
    if prefix is not None and prefix_format_func is not None:
        prefix = prefix_format_func(prefix)

    # Default multi -> '' if no format func given
    if prefix_format_func is None and prefix == cr_constants.MULTI_REFS_PREFIX:
        prefix = ''

    if '%s' in description:
        # Escape stray percents
        description = re.sub('%([^s])', '%%\\1', description)

        # Only add the prefix if there are multiple possibilities
        s = str(prefix) if len(prefixes) > 1 and prefix else ''
        description = description % s

    # Collapse whitespace
    description = re.sub('\s+', ' ', description)

    return description