Regex:匹配的嵌套圆括号

Question

考虑以下字符串：

(first group) (second group) (third group)hello example (words(more words) here) something

想要的匹配是：

(first group)
(second group)
(third group)
(words(more words) here)

我尝试构建如下regex：

/(.*?)/g

但它与以下内容相匹配：

(first group)
(second group)
(third group)
(words(more words)

有什么想法吗？

Answer 1

由于这需要在JavaScript中完成，我们有两个选项：

a( 指定一个具有固定嵌套深度的模式(这里似乎是这样(：

((?:[^()]|([^()]*))*)

const regex = /((?:[^()]|([^()]*))*)/g;
const str = `(first group) (econd group) (third group)hello example (words(more words) here) something`;
let m;
while ((m = regex.exec(str)) !== null) {
    // This is necessary to avoid infinite loops with zero-width matches
    if (m.index === regex.lastIndex) {
        regex.lastIndex++;
    }
    
    // The result can be accessed through the `m`-variable.
    m.forEach((match, groupIndex) => {
        console.log(`Found match, group ${groupIndex}: ${match}`);
    });
}

或者使用XRegexp(或类似的库(来实现递归匹配：

const str = `(first group) (econd group) (third group)hello example (words(more words) here) something`;
console.log(XRegExp.matchRecursive(str, '\(', '\)', 'g'));

<script src="https://cdn.jsdelivr.net/npm/xregexp@4.3.0/xregexp-all.js"></script>

Answer 2

也许这对您的情况有效。CCD_ 1。

旁注：我对自己的表现并不感到骄傲。

Answer 3

你能试试下面使用递归的正则表达式吗

(([^()]|(?R))*)