forked from extern/egroupware
102 lines
2.6 KiB
PHP
102 lines
2.6 KiB
PHP
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<?php
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/**
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* Class Minify_Build
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* @package Minify
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*/
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/**
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* Maintain a single last modification time for a group of Minify sources to
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* allow use of far off Expires headers in Minify.
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*
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* <code>
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* // in config file
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* $groupSources = array(
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* 'js' => array('file1.js', 'file2.js')
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* ,'css' => array('file1.css', 'file2.css', 'file3.css')
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* )
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*
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* // during HTML generation
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* $jsBuild = new Minify_Build($groupSources['js']);
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* $cssBuild = new Minify_Build($groupSources['css']);
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*
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* $script = "<script type='text/javascript' src='"
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* . $jsBuild->uri('/min.php/js') . "'></script>";
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* $link = "<link rel='stylesheet' type='text/css' href='"
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* . $cssBuild->uri('/min.php/css') . "'>";
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*
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* // in min.php
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* Minify::serve('Groups', array(
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* 'groups' => $groupSources
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* ,'setExpires' => (time() + 86400 * 365)
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* ));
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* </code>
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*
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* @package Minify
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* @author Stephen Clay <steve@mrclay.org>
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*/
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class Minify_Build {
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/**
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* Last modification time of all files in the build
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*
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* @var int
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*/
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public $lastModified = 0;
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/**
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* String to use as ampersand in uri(). Set this to '&' if
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* you are not HTML-escaping URIs.
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*
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* @var string
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*/
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public static $ampersand = '&';
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/**
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* Get a time-stamped URI
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*
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* <code>
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* echo $b->uri('/site.js');
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* // outputs "/site.js?1678242"
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*
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* echo $b->uri('/scriptaculous.js?load=effects');
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* // outputs "/scriptaculous.js?load=effects&1678242"
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* </code>
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*
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* @param string $uri
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* @param boolean $forceAmpersand (default = false) Force the use of ampersand to
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* append the timestamp to the URI.
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* @return string
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*/
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public function uri($uri, $forceAmpersand = false) {
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$sep = ($forceAmpersand || strpos($uri, '?') !== false)
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? self::$ampersand
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: '?';
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return "{$uri}{$sep}{$this->lastModified}";
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}
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/**
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* Create a build object
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*
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* @param array $sources array of Minify_Source objects and/or file paths
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*
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* @return null
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*/
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public function __construct($sources)
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{
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$max = 0;
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foreach ((array)$sources as $source) {
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if ($source instanceof Minify_Source) {
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$max = max($max, $source->lastModified);
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} elseif (is_string($source)) {
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if (0 === strpos($source, '//')) {
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$source = $_SERVER['DOCUMENT_ROOT'] . substr($source, 1);
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}
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if (is_file($source)) {
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$max = max($max, filemtime($source));
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}
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}
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}
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$this->lastModified = $max;
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}
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}
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