Updated: January 16th, 2010

Introduction

I love Delicious. It allows me to store my bookmarks, tag and search them, and, best of all, have access to them from anywhere on the web.

Searching bookmarks by keyword is easy – just enter a bunch of keywords into the search page and off you go but what if you want to confine your results to a certain domain? The main reason I wanted to do it personally is so that I could see all pages of my site bookmarked by Delicious users and the corresponding number of bookmarks. However, the only url based search Delicious offered was a full url lookup:

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This search is very limited – it accepts only a full url to …

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Quick Perl Snippet: Finding If A File Has A Media Extension Using Regex


Posted by Artem Russakovskii on March 21st, 2008 in Programming

Updated: May 1st, 2008

Sometimes in my line of work, I need to figure out if a url or filename point to a media file by checking for the file extension. If it's a url, however, it may be followed by various parameters. Not to overcomplicate things, I came up with the following Perl code:

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#!/usr/bin/perl -w
use strict;
my $name = "some_file.flv"; # or http://example.com/file.mp4?foo=bar
my $is_media_type = ($name =~ /\.(wmv|avi|flv|mov|mkv|mp..?|swf|ra.?|rm|as.|m4[av]|smi.?)\b/i);
if($is_media_type){
  print "media extension found\n";
}
else{
  print "not a media file\n";
}

This gets the job done without triggering any false positives (at least for the files/urls I've been dealing with so far). Am I missing any obvious types? Do you …

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