Boost RegEx to parse url (RFC 1738) to extract domain name

Question

Can someone please post a regex to extract domain from a url confirming RFC 1738 (http://www.ietf.org/rfc/rfc1738.txt)?

PROTOCOL://USERNAME:PASSWORD@DOMAINNAME:PORT/QUERYSTRING

Example:

Thanks, Sumit

I think you should go ahead and summarize the character sets for the specific parts of the URL for someone with Regex experience to put a correct pattern together.. — Oliver
– Oliver, Commented May 13, 2011 at 23:00
Hi Michael, I found a post "stackoverflow.com/questions/3624651/…" to extract domain name but the regex doesn't work for other types of urls like: — user3802925
– user3802925, Commented May 13, 2011 at 23:11
abc:[email protected]:777/question/… answers.yahoo.com:777/question/index abc:[email protected]/question/… answers.yahoo.com/question/index?qid=20100728205639 abc:[email protected]:777 — user3802925
– user3802925, Commented May 13, 2011 at 23:11

Community · Accepted Answer · 2017-05-23 11:55:36Z

0

You can find one such regular expression here. You can probably simplify it, but that depends entirely on your needs.

You can also use a library which provides functions for parsing URLs. A good starting point is this Stack Overflow thread: Easy way to parse a url in C++ cross platform?

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answered May 13, 2011 at 22:59

Boaz Yaniv

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