araby.py 文件源码

def normalize_ligature(text):
    """Normalize Lam Alef ligatures into two letters (LAM and ALEF), 
     and Tand return a result text.
    Some systems present lamAlef ligature as a single letter,  
    this function convert it into two letters, 
    The converted letters into  LAM and ALEF are :
        - LAM_ALEF,  LAM_ALEF_HAMZA_ABOVE,  LAM_ALEF_HAMZA_BELOW,  LAM_ALEF_MADDA_ABOVE
    Example:
        >>> text = u"????? ???? ???????"
        >>> normalizeLigature(text)
        ????? ???? ???????

    @param text: arabic text.
    @type text: unicode.
    @return: return a converted text.
    @rtype: unicode.
    """
    if text:
        return LIGUATURES_PATTERN.sub(u'%s%s'%(LAM, ALEF),  text)
    return text