util.py 文件源码

def sub_str(value, length, suffix=r'...'):

        result = []
        strlen = 0

        for val in value:

            if(unicodedata.east_asian_width(val) in (r'A',r'F',r'W')):
                strlen += 2
            else:
                strlen += 1

            if(strlen > length):

                if(suffix):
                    result.append(suffix)

                break

            result.append(val)

        return r''.join(result)