[1.6.0] Add support for name transformation to id

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@921 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/AttrTransform/Name.php

@@ -0,0 +1,31 @@
+<?php
+
+require_once 'HTMLPurifier/AttrTransform.php';
+
+/**
+ * Pre-transform that changes deprecated name attribute to ID if necessary
+ */
+class HTMLPurifier_AttrTransform_Name extends HTMLPurifier_AttrTransform
+{
+    
+    function transform($attr, $config, &$context) {
+        
+        if (!isset($attr['name'])) return $attr;
+        
+        $name = $attr['name'];
+        unset($attr['name']);
+        
+        if (isset($attr['id'])) {
+            // ID already set, discard name
+            return $attr;
+        }
+        
+        $attr['id'] = $name;
+        
+        return $attr;
+        
+    }
+    
+}
+
+?>