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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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/** |
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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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|
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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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/** |
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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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/** |
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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, $forceAmpersand = false) |
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{ |
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$sep = ($forceAmpersand || strpos($uri, '?') !== false) ? 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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/** |
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* Create a build object |
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* |
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* @param array $sources array of Minify_Source objects and/or file paths |
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* |
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*/ |
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public function __construct($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, $source->getLastModified()); |
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} elseif (is_string($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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|
