utils.py 文件源码

def asciiconvert(user_input, enable_spechar=True):
    """
    Converts user-input string into ASCII.

    Returns a string with ASCII chars only
    """
    SPECHAR_RE = r'[\s.?!:;§*^¨%$\|\[\]\(\)\{\}+=`~\'\"\\&]*'
    accented_chars = [(r'[àäâ]*', 'a'),
                      (r'[éèëê]*', 'e'),
                      (r'[ìîï]*', 'i'),
                      (r'[òöô]*', 'o'),
                      (r'[ùûü]*', 'u'),
                      (r'[ÿ??]*', 'y')]

    if not enable_spechar:
        spechar = re.compile(SPECHAR_RE)
        ans = spechar.findall(user_input)
        if ans:
            # Replacing all occurrences by an empty string
            user_input = spechar.sub('', user_input, count=0)
            re.purge()

    for pattern, repl in accented_chars:
        accented = re.compile(pattern)
        # Replacing all occurrences by a non-accented char
        user_input = accented.sub(repl, user_input, count=0)
        re.purge()

    return user_input