From 7a40f4354b32809af3d0cfd6e3af0eda02ab0e0a Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Sat, 12 May 2012 17:57:41 -0700
Subject: some important stuff we'll need

---
 .../library/HTMLPurifier/StringHash.php            | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 lib/htmlpurifier/library/HTMLPurifier/StringHash.php

(limited to 'lib/htmlpurifier/library/HTMLPurifier/StringHash.php')

diff --git a/lib/htmlpurifier/library/HTMLPurifier/StringHash.php b/lib/htmlpurifier/library/HTMLPurifier/StringHash.php
new file mode 100644
index 000000000..62085c5c2
--- /dev/null
+++ b/lib/htmlpurifier/library/HTMLPurifier/StringHash.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * This is in almost every respect equivalent to an array except
+ * that it keeps track of which keys were accessed.
+ *
+ * @warning For the sake of backwards compatibility with early versions
+ *     of PHP 5, you must not use the $hash[$key] syntax; if you do
+ *     our version of offsetGet is never called.
+ */
+class HTMLPurifier_StringHash extends ArrayObject
+{
+    protected $accessed = array();
+
+    /**
+     * Retrieves a value, and logs the access.
+     */
+    public function offsetGet($index) {
+        $this->accessed[$index] = true;
+        return parent::offsetGet($index);
+    }
+
+    /**
+     * Returns a lookup array of all array indexes that have been accessed.
+     * @return Array in form array($index => true).
+     */
+    public function getAccessed() {
+        return $this->accessed;
+    }
+
+    /**
+     * Resets the access array.
+     */
+    public function resetAccessed() {
+        $this->accessed = array();
+    }
+}
+
+// vim: et sw=4 sts=4
-- 
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