Collapse "min" into project root and get unit tests working.

Fixes #472

lib/Minify/Controller/Groups.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Class Minify_Controller_Groups  
+ * @package Minify
+ */
+
+/**
+ * Controller class for serving predetermined groups of minimized sets, selected
+ * by PATH_INFO
+ * 
+ * <code>
+ * Minify::serve('Groups', array( 
+ *     'groups' => array(
+ *         'css' => array('//css/type.css', '//css/layout.css')
+ *        ,'js' => array('//js/jquery.js', '//js/site.js')
+ *     )
+ * ));
+ * </code>
+ * 
+ * If the above code were placed in /serve.php, it would enable the URLs
+ * /serve.php/js and /serve.php/css
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_Groups extends Minify_Controller_Files {
+    
+    /**
+     * Set up groups of files as sources
+     * 
+     * @param array $options controller and Minify options
+     *
+     * 'groups': (required) array mapping PATH_INFO strings to arrays
+     * of complete file paths. @see Minify_Controller_Groups
+     *
+     * @return array Minify options
+     */
+    public function createConfiguration(array $options) {
+        // strip controller options
+        $groups = $options['groups'];
+        unset($options['groups']);
+
+        $server = $this->env->server();
+        
+        // mod_fcgid places PATH_INFO in ORIG_PATH_INFO
+        $pathInfo = isset($server['ORIG_PATH_INFO'])
+            ? substr($server['ORIG_PATH_INFO'], 1)
+            : (isset($server['PATH_INFO'])
+                ? substr($server['PATH_INFO'], 1)
+                : false
+            );
+        if (false === $pathInfo || ! isset($groups[$pathInfo])) {
+            // no PATH_INFO or not a valid group
+            $this->log("Missing PATH_INFO or no group set for \"$pathInfo\"");
+            return new Minify_ServeConfiguration($options);
+        }
+
+        $files = $groups[$pathInfo];
+        // if $files is a single object, casting will break it
+        if (is_object($files)) {
+            $files = array($files);
+        } elseif (! is_array($files)) {
+            $files = (array)$files;
+        }
+
+        $options['files'] = $files;
+
+        return parent::createConfiguration($options);
+    }
+}
+