1 function CheckChinese(s)  2     local ret = {}; 3     local f = '[%z\1-\127\194-\244][\128-\191]*'; 4     local line, lastLine, isBreak = '', false, false; 5     for v in s:gfind(f) do 6         table.insert(ret, {c=v,isChinese=(#v~=1)}); 7     end 8     return ret; 9 end10 for k, v in ipairs(CheckChinese('a中文b+')) do 11     print(k,v.c,#v.c,v.isChinese);12 end13 -------------------14 1    a    1    false15 2    中    3    true16 3    文    3    true17 4    b    1    false18 5    +    1    false

贴一段匹配中英文混合输入的代码

1 function dlg:onBtnOKClick() 2     local input = self:getInputNewContent() 3     if input == "" then  4         flytip("输入不能为空") 5         return 6     end 7     if self.pattern then 8         if self.isContainChinese then 9             local charCount = 010             for i, v in ipairs(self:CheckChinese(input)) do 11                 if v.isChinese then12                     charCount = charCount + 213                 else14                     charCount = charCount + 115                     if string.find(v.c, self.pattern) == nil then16                         flytip("抱歉，您输入的内容含有非法字符或屏蔽词，请重新输入。")17                         return18                     end19                 end20             end21             if self.characterLimit then22                 if charCount > self.characterLimit then23                     flytip("抱歉，您输入的字符长度有误，请重新输入。")24                     return25                 end26             end27         else 28             if string.find(input, self.pattern) == nil then29                 flytip("抱歉，您输入的内容含有非法字符或屏蔽词，请重新输入。")30                 return31             end32         end33     end34     35     self:Hide()36     if self._onOK then37         self._onOK()38     end39 end