93ee7356b2
Been moving away from using this functionality in favor of either Grunt or Gulp. Dropped functionality for minification of CSS and JS but left the dynamic reference logic intact. This will be moved to the HTML class eventually and expanded to support the generation of the HTML tags as well as injecting the URI with a timestamp.
99 lines
3 KiB
PHP
99 lines
3 KiB
PHP
<?php
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/**
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* Dynamic Content Class File for PICKLES
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*
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* PHP version 5
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*
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* Licensed under The MIT License
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* Redistribution of these files must retain the above copyright notice.
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*
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* @author Josh Sherman <josh@gravityblvd.com>
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* @copyright Copyright 2007-2014, Josh Sherman
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* @license http://www.opensource.org/licenses/mit-license.html
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* @package PICKLES
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* @link https://github.com/joshtronic/pickles
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*/
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/**
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* Dynamic Class
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*
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* Handles generating links to static content that are a timestamp injected as
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* to avoid hard caching. Also minifies content where applicable.
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*
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* Note: you will want to add a mod_rewrite line to your .htaccess to support
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* the routing to the filenames with the timestamp injected:
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*
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* RewriteRule ^(.+)\.([\d]+)\.(css|js|gif|png|jpg|jpeg)$ /$1.$3 [NC,QSA]
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*/
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class Dynamic extends Object
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{
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/**
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* Generate Reference
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*
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* Appends a dynamic piece of information to the passed reference in the
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* form of a UNIX timestamp added to the query string.
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*
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* @param string $reference URI reference of the file
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* @param string $failover URI reference to use if the reference can't be found
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* @return string URI reference reference with dynamic content
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*/
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public function reference($reference, $failover = false)
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{
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// Checks if the URI reference is absolute, and not relative
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if (substr($reference, 0, 1) == '/')
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{
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$query_string = '';
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// Checks for ? and extracts query string
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if (strstr($reference, '?'))
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{
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list($reference, $query_string) = explode('?', $reference);
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}
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// Adds the dot so the file functions can find the file
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$file = '.' . $reference;
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if (file_exists($file))
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{
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// Replaces the extension with time().extension
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$parts = explode('.', $reference);
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if (count($parts) == 1)
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{
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throw new Exception('Filename must have an extension (e.g. /path/to/file.png)');
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}
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else
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{
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end($parts);
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$parts[key($parts)] = filemtime($file) . '.' . current($parts);
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$reference = implode('.', $parts);
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}
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// Adds the query string back
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if ($query_string != '')
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{
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$reference .= '?' . $query_string;
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}
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}
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else
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{
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if ($failover != false)
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{
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$reference = $failover;
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}
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else
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{
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throw new Exception('Supplied reference does not exist (' . $reference . ')');
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}
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}
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}
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else
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{
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throw new Exception('Reference value must be absolute (e.g. /path/to/file.png)');
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}
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return $reference;
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}
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}
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