正则表达式检测 Zalgo

Question

我正在创建一个消息过滤系统，它检测 z???a???l???g???o???。

我当前的正则表达式是，/([^\u0009-\u02b7\u2000-\u20bf\u2122\u0308]|(?![^aeiouy])\u0308)/gm 但这也捕获表情符号。

正则表达式应该过滤所有 w???e???i???r???d??? ？？？文本？？？？？？喜欢？？？？？？这个？？？或 t?e?x?t? ？喜欢？?t?h?i?s?，但不应捕捉表情符号。

Answer 1

以下是测试方法

const re = /%CC%/g
const hasZalgo = txt => re.test(encodeURIComponent(txt));  

console.log(hasZalgo("w???2e???i???r???d??? ???t???e???x???t??? ???l???i???k???e??? ???t???h???i???s??? 222 "))
console.log(hasZalgo("Weird text like %CC% this "))

这是转换方法

console.log(
  decodeURIComponent(
    encodeURIComponent("w???2e???i???r???d??? ???t???e???x???t??? ???l???i???k???e??? ???t???h???i???s??? 222 ")
    .replace(/%CC(%[A-Z0-9]{2})+%20/g," ") // replace space
    .replace(/%CC(%[A-Z0-9]{2})+(\w)/g,"$2") // replace anything else
  )
)