CODEWITHSUNDEEP
c#regex
user2609980
user2609980

Reputation: 10474

Regex trouble: how to get everything between the last two forward slashes

I have a string with a variable amount of backslashes. Now I want to collect only the part (letters) between the last two backslashes.

So if I have /this/is/a/string/blablablablabla I want to capture string and if I have /this/is/a/longer/string/than/the/one/before/baba I want to capture before.

What I have tried is:

 Regex.Match(myString, @"/(.*)/.*$").Groups[0].Value

but this captures everything between the first slash and also things after the last, and I want it to be between the one-before-last till the last. I am quite new to regexes and hope someone can help me out.

The last answer of leon is/([^/]*)/[^/]*$, but this captures everything after the last / as well, and also includes the first /.

How can I fix this?

Upvotes: 0

Views: 2530

Answers (3)

Robin
Robin

Reputation: 9644

If there is only one such pattern in your string, you can just use

/(\w+)/[^/]*$

Your data is in the first captured group.

[^/] will match anything BUT /, \w is short for [0-9a-zA-Z_].

EDIT: Comment from OP

Groups[1] was the first capturing group. So the answer in C# was: 

answer = Regex.Match(myString, @"/(\w+)/[^/]*$").Groups[1].Value;

Let's go through it: / states we match the /, then we capture with (\w+) one or more words and we stop at a /. Then we do not match the slash itself with [^/] and we match everything till the end (*$)

Upvotes: 3

decPL
decPL

Reputation: 5402

A direct answer to your question would be:

/([^/]*)/[^/]*$

Or, since your strings are pretty straightforward, you can avoid regexes altogether:

if (input.EndsWith("/"))
    return input.Split('/').Last();
else
    return input.Split('/').Reverse().Skip(1).First();

Upvotes: 1

leon.io
leon.io

Reputation: 2824

Try this http://regexr.com?38c43

(?:[a-z/]+)/([a-z]+)

Look in the first (and only) group, it'll have the last item.

Upvotes: 0

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