[add] HTML Purifier added to clean code

1 files changed, 70 insertions, 0 deletions

diff --git a/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/Nmtokens.php b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/Nmtokens.php
new file mode 100644
index 00000000..ecb070c3
--- /dev/null
+++ b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/Nmtokens.php
@@ -0,0 +1,70 @@
+<?php

+

+/**

+ * Validates contents based on NMTOKENS attribute type.

+ */

+class HTMLPurifier_AttrDef_HTML_Nmtokens extends HTMLPurifier_AttrDef

+{

+

+    /**

+     * @param string $string

+     * @param HTMLPurifier_Config $config

+     * @param HTMLPurifier_Context $context

+     * @return bool|string

+     */

+    public function validate($string, $config, $context)

+    {

+        $string = trim($string);

+

+        // early abort: '' and '0' (strings that convert to false) are invalid

+        if (!$string) {

+            return false;

+        }

+

+        $tokens = $this->split($string, $config, $context);

+        $tokens = $this->filter($tokens, $config, $context);

+        if (empty($tokens)) {

+            return false;

+        }

+        return implode(' ', $tokens);

+    }

+

+    /**

+     * Splits a space separated list of tokens into its constituent parts.

+     * @param string $string

+     * @param HTMLPurifier_Config $config

+     * @param HTMLPurifier_Context $context

+     * @return array

+     */

+    protected function split($string, $config, $context)

+    {

+        // OPTIMIZABLE!

+        // do the preg_match, capture all subpatterns for reformulation

+

+        // we don't support U+00A1 and up codepoints or

+        // escaping because I don't know how to do that with regexps

+        // and plus it would complicate optimization efforts (you never

+        // see that anyway).

+        $pattern = '/(?:(?<=\s)|\A)' . // look behind for space or string start

+            '((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)' .

+            '(?:(?=\s)|\z)/'; // look ahead for space or string end

+        preg_match_all($pattern, $string, $matches);

+        return $matches[1];

+    }

+

+    /**

+     * Template method for removing certain tokens based on arbitrary criteria.

+     * @note If we wanted to be really functional, we'd do an array_filter

+     *       with a callback. But... we're not.

+     * @param array $tokens

+     * @param HTMLPurifier_Config $config

+     * @param HTMLPurifier_Context $context

+     * @return array

+     */

+    protected function filter($tokens, $config, $context)

+    {

+        return $tokens;

+    }

+}

+

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