Consider the following string:
(first group) (second group) (third group)hello example (words(more words) here) something
The desired matches would be:
(first group)
(second group)
(third group)
(words(more words) here)
I've tried to build a regex as follows:
/\(.*?\)/g
But it matches the following:
(first group)
(second group)
(third group)
(words(more words)
Any ideas?
Since this needs to be done in JavaScript, we have two options:
a) specify a pattern with a fixed nesting depth (this seems to be case here):
\((?:[^()]|\([^()]*\))*\)
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}`);
});
}Or use XRegexp (or a similar library) that implements recursive matching:
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/[email protected]/xregexp-all.js"></script>Maybe this could work in your case. \((?:[^()]|\([^()]+\))+\).
Side note: Not too proud of how I did this.
Can you please try out the below regular expression which uses recursion
\(([^()]|(?R))*\)
