正则表达式匹配除一个以外的所有网站

Question

I am trying to create a regex query to match ALL possible websites excluding one.

(https?:\/\/)?+(www)?([^:\/]+\.)?mysite\.[a-zA-Z]{1,3}

unfortunately example below will only work for search for ONLY that domain.

I tried adding (.mysite) but that doesn't work? Any ideas?

Playground https://regex101.com/r/Q4QmVZ/1

Answer 1

With a negative look ahead you can exclude the domain you don't want.

\b(https?:\/\/)?(www\.)?(?!mysite)[\w-]+\.[a-z]{2,3}\b

It passes all the tests given but not sure about others.

Answer 2

You can use a negative lookbehind to exclude your website and do something like this:

\b(?:https?:\/\/)?(?:www\.)?[a-zA-Z0-9-]+(?<!\bmysite\b)\.[a-zA-Z]{2,4}\b