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