Let's say I have urls like these

1. https://example.com/link
2. https://example.com/link?code=1234
3. https://example.com/link/with/longer/path

What I need is to match accordingly:

1. link
2. link
3. link/with/longer/path

This regex: ^(?:[^/]*(?:/(?:/[^/]*/?)?)?([^?] )(?:\??. )?)$ is able to group a path, but because of a tool I use, I need to match preciesliy just that one group - this regex matches whole URLs.

Can I make it match just the first group? Or maybe there is something smarter to do it?

CodePudding user response：

You can use

(?<=(?<!/)/)(?!/)[^?] 

See the regex demo. Details:

• (?<=(?<!/)/) - a positive lookbehind that fails the match if there is a / char immediately to the left of the current location that is not immediately preceded with another / char (the check if performed with a (?<!/) negative lookbehind)
• (?!/) - a negative lookahead that fails the match if there is a / char immediately to the right of the current location
• [^?] - one or more chars other than a ? char.