Commit Multiple AttrDef, forms scaffolding for a few more CSS properties.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@272 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/AttrDef/Multiple.php

@@ -0,0 +1,36 @@
+<?php
+
+require_once 'HTMLPurifier/AttrDef.php';
+
+class HTMLPurifier_AttrDef_Multiple extends HTMLPurifier_AttrDef
+{
+    
+    var $single;
+    var $max;
+    
+    function HTMLPurifier_AttrDef_Multiple($single, $max = 4) {
+        $this->single = $single;
+        $this->max = $max;
+    }
+    
+    function validate($string, $config, &$context) {
+        $string = $this->parseCDATA($string);
+        if ($string === '') return false;
+        $parts = explode(' ', $string); // parseCDATA replaced \r, \t and \n
+        $length = count($parts);
+        $final = '';
+        for ($i = 0, $num = 0; $i < $length && $num < $this->max; $i++) {
+            if (ctype_space($parts[$i])) continue;
+            $result = $this->single->validate($parts[$i], $config, $context);
+            if ($result !== false) {
+                $final .= $result . ' ';
+                $num++;
+            }
+        }
+        if ($final === '') return false;
+        return rtrim($final);
+    }
+    
+}
+
+?>