From 74a89c9a28c9a102efb2e58e40ef46f5e5d42ba5 Mon Sep 17 00:00:00 2001
From: Harris Wong <hwong@ocad.ca>
Date: Fri, 8 Oct 2010 18:42:19 +0000
Subject: [PATCH]

---
 .../classes/ContentOutputParser.class.php     | 87 +++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 docs/include/classes/ContentOutputParser.class.php

diff --git a/docs/include/classes/ContentOutputParser.class.php b/docs/include/classes/ContentOutputParser.class.php
new file mode 100644
index 0000000..b756030
--- /dev/null
+++ b/docs/include/classes/ContentOutputParser.class.php
@@ -0,0 +1,87 @@
+<?php
+/************************************************************************/
+/* ATutor                                                               */
+/************************************************************************/
+/* Copyright (c) 2002 - 2009                                            */
+/* Inclusive Design Institute                                           */
+/*                                                                      */
+/* This program is free software. You can redistribute it and/or        */
+/* modify it under the terms of the GNU General Public License          */
+/* as published by the Free Software Foundation.                        */
+/************************************************************************/
+// $Id: ContentOutputParser.class.php 10278 2010-10-04 16:47:45Z hwong $
+
+class ContentOutputParser {
+    function ContentOutputParser(){}
+    function openHandler(& $parser,$name,$attrs) {
+		global $my_files;
+
+		$name = strtolower($name);
+		$attrs = array_change_key_case($attrs, CASE_LOWER);
+
+        /*
+            the following resources are to be identified:
+            even if some of these can't be images, they can still be files in the content dir.
+            theoretically the only urls we wouldn't deal with would be for a <!DOCTYPE and <form>
+
+            img		=> src
+            a		=> href				// ignore if href doesn't exist (ie. <a name>)
+            object	=> data | classid	// probably only want data
+            applet	=> classid | archive			// whatever these two are should double check to see if it's a valid file (not a dir)
+            link	=> href
+            script	=> src
+            form	=> action
+            input	=> src
+            iframe	=> src
+
+        */
+		$elements = array(	'img'		=> 'src',
+							'a'			=> 'href',				
+							'object'	=> array('data', 'classid'),
+							'applet'	=> array('classid', 'archive'),
+							'link'		=> 'href',
+							'script'	=> 'src',
+							'form'		=> 'action',
+							'input'		=> 'src',
+							'iframe'	=> 'src',
+							'embed'		=> 'src',
+							'param'		=> 'value');
+	
+		/* check if this attribute specifies the files in different ways: (ie. java) */
+		if (is_array($elements[$name])) {
+			$items = $elements[$name];
+			foreach ($items as $item) {
+				if ($attrs[$item] != '') {
+
+					/* some attributes allow a listing of files to include seperated by commas (ie. applet->archive). */
+					if (strpos($attrs[$item], ',') !== false) {
+						$files = explode(',', $attrs[$item]);
+						foreach ($files as $file) {
+							$my_files[] = trim($file);
+						}
+					} else {
+						$my_files[] = $attrs[$item];
+					}
+				}
+			}
+		} else if (isset($elements[$name]) && ($attrs[$elements[$name]] != '')) {
+			//hack, if param[name]=src or none <param> tag, extract. Skip all other <param> attributes.  
+			if ($name!='param' || $attrs['name']=='src'){
+				//skip glossary.html, tweak to accomodate atutor imscp; also skip repeated entries.
+				//skip javascript: links, void();, #, mailto:
+				if (strpos($attrs[$elements[$name]], 'glossary.html')===false 
+				    && !in_array($attrs[$elements[$name]], $my_files)
+				    && $attrs[$elements[$name]]!='#'
+				    && strpos($attrs[$elements[$name]], 'javascript:')===false 
+				    && strpos($attrs[$elements[$name]], 'mailto:')===false 
+				    && strpos($attrs[$elements[$name]], 'void(')===false 
+				   ){
+					$my_files[] = $attrs[$elements[$name]];
+				}
+			}
+		}
+	}
+	
+	function closeHandler(& $parser,$name) { }
+}
+?>
\ No newline at end of file
-- 
2.17.1