CODEWITHSUNDEEP
rubyregex
Daniel Jacob Archer
Daniel Jacob Archer

Reputation: 63

Ruby Regular Expression for matching any subdomains and the top level domain

I'm trying to create a regex that will optionally match any subdomains, and match the TLD. For example, it should match…

It should not match…

I have this so far, which matches subdomains, but does not match when at the top level domain. (\A|(https?:\/\/))?(\w*|\S*)\.{1}example\.com

Upvotes: 1

Views: 667

Answers (1)

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 627190

You may use

/\A(?:https?:\/\/)?(?:\S*\.)?example\.com\z/

See the regex demo

Details

  • \A - start of string
  • (?:https?:\/\/)? - an optional (as the ? quantifier at the end repeats 1 or 0 times) non-capturing group matching http, an optional s and then // substring
  • (?:\S*\.)? - an optional non-capturing group matching 1 or 0 occurrences of 0 or more non-whitespace chars (with \S*) and then a dot (\.)
  • example\.com - an example.com substring
  • \z - end of string.

Upvotes: 3

Related Questions