<?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
 * 
 * As a shortcut, the controller will replace "//" at the beginning
 * of a filename with $_SERVER['DOCUMENT_ROOT'] . '/'.
 * 
 * @package Minify
 * @author Stephen Clay <steve@mrclay.org>
 */
class Minify_Controller_Groups extends Minify_Controller_Base {
 
 /**
 * Set up groups of files as sources
 * 
 * @param array $options controller and Minify options
 *
 * 'groups': (required) array mapping PATH_INFO strings to arrays
 * of complete file paths. @see Minify_Controller_Groups
 *
 * @return array Minify options
 */
 public function setupSources($options) {
 // strip controller options
 $groups = $options['groups'];
 unset($options['groups']);
 
 // mod_fcgid places PATH_INFO in ORIG_PATH_INFO
 $pi = isset($_SERVER['ORIG_PATH_INFO'])
 ? substr($_SERVER['ORIG_PATH_INFO'], 1) 
 : (isset($_SERVER['PATH_INFO'])
 ? substr($_SERVER['PATH_INFO'], 1) 
 : false
 );
 if (false === $pi || ! isset($groups[$pi])) {
 // no PATH_INFO or not a valid group
 $this->log("Missing PATH_INFO or no group set for \"$pi\"");
 return $options;
 }
 $sources = array();
 
 $files = $groups[$pi];
 // if $files is a single object, casting will break it
 if (is_object($files)) {
 $files = array($files);
 } elseif (! is_array($files)) {
 $files = (array)$files;
 }
 foreach ($files as $file) {
 if ($file instanceof Minify_Source) {
 $sources[] = $file;
 continue;
 }
 if (0 === strpos($file, '//')) {
 $file = $_SERVER['DOCUMENT_ROOT'] . substr($file, 1);
 }
 $realPath = realpath($file);
 if (is_file($realPath)) {
 $sources[] = new Minify_Source(array(
 'filepath' => $realPath
 )); 
 } else {
 $this->log("The path \"{$file}\" could not be found (or was not a file)");
 return $options;
 }
 }
 if ($sources) {
 $this->sources = $sources;
 }
 return $options;
 }
}