golang regex to find urls in a string

Question

I am tring to find all links in a string and then hyperlink them
like this js lib https://github.com/bryanwoods/autolink-js

i tried to use alot of regex but i always got too many errors
http://play.golang.org/p/iQiccXvFiB
i don't know if go has a different regex syntax

so, what regex that works in go that is good to match urls in strings

thanks

mvdan · Accepted Answer · 2018-03-31 13:56:50Z

11

You can use xurls:

import "mvdan.cc/xurls"

func main() {
        xurls.Relaxed().FindString("Do gophers live in golang.org?")
        // "golang.org"
        xurls.Relaxed().FindAllString("foo.com is http://foo.com/.", -1)
        // ["foo.com", "http://foo.com/"]
        xurls.Strict().FindAllString("foo.com is http://foo.com/.", -1)
        // ["http://foo.com/"]
}

edited Mar 31, 2018 at 13:56

answered May 23, 2015 at 9:19

mvdan

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Comments

thwd · Accepted Answer · 2014-10-25 10:52:14Z

2

Use back-ticks instead of double-quotes for your string literals. Back-slashes inside double-quotes start escape sequences, which you don't need/want for this use case.

Additionally, how did you expect this to work?

"<a href="$0">$0</a>"

answered Oct 25, 2014 at 10:52

thwd

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3 Comments

Marwan Over a year ago

i solved it using \\, but the core problem is like you said (using double-quotes), so using back-ticks is what i need, thanks. what do you mean with (how did you expect this to work?), what's wrong, i give the output that i want

thwd Over a year ago

This "<a href="$0">$0</a>" is a string literal "<a href=", followed by $0 (which means nothing in Go), followed by the string ">$0</a>". If you're going to use double-quotes, then you can't use double quotes inside of the string, unless you escape them.

Marwan Over a year ago

right, i already changed it to '<a href="$0" targe="_blank" rel="nofollow">$0</a>', thanks

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