1 files changed, 48 insertions, 0 deletions

diff --git a/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrTransform/ImgRequired.php b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrTransform/ImgRequired.php
new file mode 100644
index 00000000..561b4d9d
--- /dev/null
+++ b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrTransform/ImgRequired.php
@@ -0,0 +1,48 @@
+<?php

+

+// must be called POST validation

+

+/**

+ * Transform that supplies default values for the src and alt attributes

+ * in img tags, as well as prevents the img tag from being removed

+ * because of a missing alt tag. This needs to be registered as both

+ * a pre and post attribute transform.

+ */

+class HTMLPurifier_AttrTransform_ImgRequired extends HTMLPurifier_AttrTransform

+{

+

+    /**

+     * @param array $attr

+     * @param HTMLPurifier_Config $config

+     * @param HTMLPurifier_Context $context

+     * @return array

+     */

+    public function transform($attr, $config, $context)

+    {

+        $src = true;

+        if (!isset($attr['src'])) {

+            if ($config->get('Core.RemoveInvalidImg')) {

+                return $attr;

+            }

+            $attr['src'] = $config->get('Attr.DefaultInvalidImage');

+            $src = false;

+        }

+

+        if (!isset($attr['alt'])) {

+            if ($src) {

+                $alt = $config->get('Attr.DefaultImageAlt');

+                if ($alt === null) {

+                    // truncate if the alt is too long

+                    $attr['alt'] = substr(basename($attr['src']), 0, 40);

+                } else {

+                    $attr['alt'] = $alt;

+                }

+            } else {

+                $attr['alt'] = $config->get('Attr.DefaultInvalidImageAlt');

+            }

+        }

+        return $attr;

+    }

+}

+

+// vim: et sw=4 sts=4