How to find the url which comes before the first backbone.js token in the given text. I tried all possibilities but not able to do so

Question

How to find the url which comes before the first backbone.js token in the given text. I tried all possibilities but not able to do so.

Ref: https://regex101.com/r/rJ1oA8/4

Text: dfjSKsfkfkSFKfdvsfdvsdv https://text.com from https://test2.com sdjgdsdh https://backbone.js from jfsjfskf https://backbone.js jsvdywfiwqkbfs sfgsaifiwf sfasfk https://fggfgf.com

Expected output: https://test2.com

Text can have any number of urls

What is the expected output? `https://test2.com`? – Wiktor Stribiżew Sep 10 '15 at 07:46 — Wiktor Stribiżew, Sep 10 '15 at 07:46
as a example I given this, yes it should be backbone.js – kalki Sep 10 '15 at 07:46 — kalki, Sep 10 '15 at 07:46
yes, expected output is https://test2.com – kalki Sep 10 '15 at 07:47 — kalki, Sep 10 '15 at 07:47

score 1 · Accepted Answer · edited May 23 '17 at 12:14

1

I can suggest this regex:

\bhttps?:\/\/\S*(?=(?:(?!http)[\s\S])*https?:\/\/\S*backbone\.com)

The (?:(?!http)[\s\S])* is a tempered greedy token that ensures the smallest possible window between a URL and another URL with backbone.com.

In JS, to match any character, even a newline, you need to use [\s\S] character class, or a JS-specific [^]. For portabililty reasons, I prefer [\s\S].

See demo

For a better URL regex, you can see this SO post or see my previous answer with Diego Perini's URL regex.

edited May 23 '17 at 12:14

Community

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answered Sep 10 '15 at 07:58

Wiktor Stribiżew

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But it is not working if the text contains new line charterers inbetween, ref: https://regex101.com/r/rJ1oA8/7 – kalki Sep 10 '15 at 09:01

Neil Villareal · Answer 2 · 2015-09-10T08:28:18.877

0

You might want to try this

https?\:\/\/(?!backbone)\S+\.com(?=(?:(?!http)[^])*https?\:\/\/backbone.js)

Demo here(https://regex101.com/r/xP3rR5/1)

edited Sep 10 '15 at 08:28

answered Sep 10 '15 at 08:16

Neil Villareal

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How to find the url which comes before the first backbone.js token in the given text. I tried all possibilities but not able to do so

2 Answers2