def gbk2big5(chars):
out = '<STR_LIT>'<EOL>for char in chars:<EOL><INDENT>if char in _cd.GBK:<EOL><INDENT>out += _cd.BIG5[_cd.GBK.index(char)]<EOL><DEDENT>else:<EOL><INDENT>out += char<EOL><DEDENT><DEDENT>return out<EOL>
Convert from gbk format to big5 representation of chars.