#49 Add files URL template filter

template/filter/url.php

@@ -0,0 +1,66 @@
+<?php
+/**
+ * Joomlatools Framework - https://www.joomlatools.com/developer/framework/
+ *
+ * @copyright   Copyright (C) 2007 Johan Janssens and Timble CVBA. (http://www.timble.net)
+ * @license     GNU GPLv3 <http://www.gnu.org/licenses/gpl.html>
+ * @link        https://github.com/joomlatools/joomlatools-framework for the canonical source repository
+ */
+
+/**
+ * Url Template Filter
+ *
+ * Filter allows to create url schemes that are replaced on compile and render.
+ *
+ * @author  Arunas Mazeika <https://github.com/amazeika>
+ * @package Koowa\Component\Koowa\Template\Filter
+ */
+class ComFilesTemplateFilterUrl extends KTemplateFilterAbstract
+{
+    protected function _initialize(KObjectConfig $config)
+    {
+        $config->append(array('base_path' => $this->getObject('request')->getBasePath()));
+
+        parent::_initialize($config);
+    }
+
+    public function filter(&$text)
+    {
+        $pattern = '~files://(.+)/([^\s"\']+?)~isU';
+
+        $matches = array();
+
+        preg_match_all($pattern, $text, $matches, PREG_SET_ORDER);
+
+        foreach ($matches as $match)
+        {
+           $container = $this->getObject('com:files.model.containers')->slug($match[1])->fetch();
+
+            if (!$container->isNew())
+            {
+                if ($base = $this->_getBasePath($container))
+                {
+                    $url = sprintf('/%s/%s', $base, $match[2]);
+
+                    $text = str_replace($match[0], $this->_getCleanBasePath($url), $text);
+                }
+            }
+        }
+    }
+
+    protected function _getBasePath($container)
+    {
+        return $this->_getCleanBasePath(trim(sprintf('%s/%s', $this->getConfig()->base_path, $container->path), '/'));
+    }
+
+    protected function _getCleanBasePath($path)
+    {
+        $folders = explode('/', $path);
+
+        foreach ($folders as &$folder) {
+            $folder = rawurlencode($folder);
+        }
+
+        return implode('/', $folders);
+    }
+}