Regex to check ending of URL query parameter

Question

I have following test strings:

I'm looking for a regex that only matches path=a/b/c.png(the path query parameter without the trailing slash). The path query parameter can be in the beginning, middle or end of the row.

So far I have following regex path=[^#&]*:

You can see it here: https://regex101.com/r/v4DqDx/1/

Thanks for any help!

EDIT: To be more clear, the query parameter in row 1 and 4 with the trailing slash should not match.

Community · Accepted Answer · 2020-06-20 09:12:55Z

2

Code

See regex in use here: Uses m flag for multiline

\bpath=[^#&\n]*\.\w+(?=[&#]|$)

If the content is not multiline use this instead:

\bpath=[^#&]*\.\w+(?=[&#]|$)

Explanation

\b Assert position as a word boundary. A word boundary is a location that matches (^\w|\w$|\W\w|\w\W)
path= Match this literally
[^#&\n]* Match any character except #&\n any number of times
\. Matches a literal dot
\w+ Matches one or more word characters
(?=[&#]|$) Positive lookahead ensuring either a character in the set &# matches or it's the end of the line.

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Jan 12, 2018 at 16:08

ctwheels

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6 Comments

ctwheels Over a year ago

@RomanPerekhrest did you even read my answer? I specifically put a note for this. I include a link to regex101. This 100% works.

ctwheels Over a year ago

@RomanPerekhrest edited to prevent further confusion. If you wouldn't mind cleaning up your comments after too (to prevent confusion for future viewers)

Koji Over a year ago

Thanks for your help but I'm looking for a regex that doesn't match the query parameter in row 1 and 4 (ignores the query parameter with a trailing slash).

ctwheels Over a year ago

@Koji maybe that should've been specified in the question then give me a moment

ctwheels Over a year ago

@RomanPerekhrest you're missing the m flag. Why don't you just click on the regex101 link I created to see it in use instead of trying to get it to work yourself?

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