1 files changed, 45 insertions, 0 deletions
diff --git a/library/HTMLPurifier/Injector/PurifierLinkify.php b/library/HTMLPurifier/Injector/PurifierLinkify.php
new file mode 100644
index 000000000..ad2455a91
--- /dev/null
+++ b/library/HTMLPurifier/Injector/PurifierLinkify.php
@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * Injector that converts configuration directive syntax %Namespace.Directive
+ * to links
+ */
+class HTMLPurifier_Injector_PurifierLinkify extends HTMLPurifier_Injector
+{
+
+    public $name = 'PurifierLinkify';
+    public $docURL;
+    public $needed = array('a' => array('href'));
+
+    public function prepare($config, $context) {
+        $this->docURL = $config->get('AutoFormat.PurifierLinkify.DocURL');
+        return parent::prepare($config, $context);
+    }
+
+    public function handleText(&$token) {
+        if (!$this->allowsElement('a')) return;
+        if (strpos($token->data, '%') === false) return;
+
+        $bits = preg_split('#%([a-z0-9]+\.[a-z0-9]+)#Si', $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
+        $token = array();
+
+        // $i = index
+        // $c = count
+        // $l = is link
+        for ($i = 0, $c = count($bits), $l = false; $i < $c; $i++, $l = !$l) {
+            if (!$l) {
+                if ($bits[$i] === '') continue;
+                $token[] = new HTMLPurifier_Token_Text($bits[$i]);
+            } else {
+                $token[] = new HTMLPurifier_Token_Start('a',
+                    array('href' => str_replace('%s', $bits[$i], $this->docURL)));
+                $token[] = new HTMLPurifier_Token_Text('%' . $bits[$i]);
+                $token[] = new HTMLPurifier_Token_End('a');
+            }
+        }
+
+    }
+
+}
+
+// vim: et sw=4 sts=4