Imgur ID match using Regex in ASP.NET C#

Question

I am pretty inexperienced when it comes to regular expressions and wondered if anyone can help me achieve the following.

I need a regular expression that will validate if a certain URL is a valid imgur image and return the ID of the image.

 Match imgurMatch = imgurRegex.Match(URL);
 if(imgurMatch.Success)
    id = imgurMatch.Groups[0].Value

Here are some examples:

https://i.stack.imgur.com/1uGCs.jpg (ID = qtPdb)

https://i.stack.imgur.com/skRRh.jpg (ID = RcVIa)

(Could be of type .jpg, .png, .gif)

https://i.stack.imgur.com/3o0jW.jpg (ID = 3ZZuG)

I think a regular expression that can handle the above and return the correct ID would be good enough for me, since even if validation fails for some reason, I will be able to handle it in another way.

Please let me know if any more details is needed.

Thanks!

Tribe84

Bob Vale · Accepted Answer · 2011-08-15T22:23:12.147

6

Regex imgurRegex=new Regex(@"http://(?:i\.imgur\.com/(?<id>.*?)\.(?:jpg|png|gif)|imgur\.com/(?:gallery/)?(?<id>.*))$");
Match imgurMatch = imgurRegex.Match(URL);
if(imgurMatch.Success)
   id = imgurMatch.Groups["id"].Value

edited Aug 15 '11 at 22:23

answered Aug 15 '11 at 22:13

Bob Vale

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Note imgur also hosts PNG and GIF images, so the test for the .jpg part should be made to account for that generically. – kprobst Aug 15 '11 at 22:16
ahh I don't know the url format I was just matching your question, now updated the answer – Bob Vale Aug 15 '11 at 22:24
Thanks Bob, how as stated above, how would I change that it can handle PNG or GIF images too? I will award you the answer regardless. – tribe84 Aug 15 '11 at 22:25
Answer now handles extra file types – Bob Vale Aug 15 '11 at 22:26
Great! Thanks, I have edited my question to include the other file types and awarded you the answer! – tribe84 Aug 15 '11 at 22:27
Make sure that you account for the lesser-used 'jpeg' format. Exactly the same as 'jpg', just a pain in the ass sometimes ;) – Steffan Donal Jan 26 '12 at 11:58

Imgur ID match using Regex in ASP.NET C#

1 Answers1