1 files changed, 103 insertions, 0 deletions
diff --git a/mod/minify/lib/min/lib/Minify/Build.php b/mod/minify/lib/min/lib/Minify/Build.php
new file mode 100644
index 000000000..e625165e5
--- /dev/null
+++ b/mod/minify/lib/min/lib/Minify/Build.php
@@ -0,0 +1,103 @@
+<?php
+/**
+ * Class Minify_Build  
+ * @package Minify
+ */
+
+require_once 'Minify/Source.php';
+
+/**
+ * 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 = '&amp;';
+    
+    /**
+     * 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&amp1678242"
+     * </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;
+    }
+}