Regular Expression: Get file extension from string

Question

I have a link (string) which contains a filename. I need to extract the format of the filename but I am unfortunately not able to do that. An example link is given below

www.xyz.com/private/videos/89FDJKDKFgrFTD-MUyKE9Sn/source?file-name=SampleAudio_0.4mb.mp3&token=exp=1591202847~acl=/private/videos/8OJFREFJOIJFREJ-MUyKE9Sn/source*~hmac=aef161514cdfodsjfodsjorjef081b4c849b8c29c6a37339803866badfd4a16

I have tried multiple ways like to look for .(dot) until & but since I am new to this I couldn't make this work. I got the filename through name=([^&]*) but could not get the extension. Is there a way to do this?

Doruk Eren Aktaş · Accepted Answer · 2020-06-03T19:20:34.100

1

You can use this regex:

(?:file-name=.*)(\..+)(?:&)

Also see working example: https://regex101.com/r/CJDXLW/2

edited Jun 03 '20 at 19:20

answered Jun 03 '20 at 19:17

Doruk Eren Aktaş

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I just need the extension. This gives the complete filename – Ali Turab Abbasi Jun 03 '20 at 19:20
I updated the answer check it again please. – Doruk Eren Aktaş Jun 03 '20 at 19:20
Works now. Thanks – Ali Turab Abbasi Jun 03 '20 at 19:28
Np :) Accepted answer will be appreciated. – Doruk Eren Aktaş Jun 03 '20 at 19:29

Regular Expression: Get file extension from string

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