1 files changed, 0 insertions, 86 deletions
diff --git a/library/HTMLPurifier/AttrDef/Lang.php b/library/HTMLPurifier/AttrDef/Lang.php
deleted file mode 100644
index 2a55cea64..000000000
--- a/library/HTMLPurifier/AttrDef/Lang.php
+++ /dev/null
@@ -1,86 +0,0 @@
-<?php
-
-/**
- * Validates the HTML attribute lang, effectively a language code.
- * @note Built according to RFC 3066, which obsoleted RFC 1766
- */
-class HTMLPurifier_AttrDef_Lang 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);
-        if (!$string) {
-            return false;
-        }
-
-        $subtags = explode('-', $string);
-        $num_subtags = count($subtags);
-
-        if ($num_subtags == 0) { // sanity check
-            return false;
-        }
-
-        // process primary subtag : $subtags[0]
-        $length = strlen($subtags[0]);
-        switch ($length) {
-            case 0:
-                return false;
-            case 1:
-                if (!($subtags[0] == 'x' || $subtags[0] == 'i')) {
-                    return false;
-                }
-                break;
-            case 2:
-            case 3:
-                if (!ctype_alpha($subtags[0])) {
-                    return false;
-                } elseif (!ctype_lower($subtags[0])) {
-                    $subtags[0] = strtolower($subtags[0]);
-                }
-                break;
-            default:
-                return false;
-        }
-
-        $new_string = $subtags[0];
-        if ($num_subtags == 1) {
-            return $new_string;
-        }
-
-        // process second subtag : $subtags[1]
-        $length = strlen($subtags[1]);
-        if ($length == 0 || ($length == 1 && $subtags[1] != 'x') || $length > 8 || !ctype_alnum($subtags[1])) {
-            return $new_string;
-        }
-        if (!ctype_lower($subtags[1])) {
-            $subtags[1] = strtolower($subtags[1]);
-        }
-
-        $new_string .= '-' . $subtags[1];
-        if ($num_subtags == 2) {
-            return $new_string;
-        }
-
-        // process all other subtags, index 2 and up
-        for ($i = 2; $i < $num_subtags; $i++) {
-            $length = strlen($subtags[$i]);
-            if ($length == 0 || $length > 8 || !ctype_alnum($subtags[$i])) {
-                return $new_string;
-            }
-            if (!ctype_lower($subtags[$i])) {
-                $subtags[$i] = strtolower($subtags[$i]);
-            }
-            $new_string .= '-' . $subtags[$i];
-        }
-        return $new_string;
-    }
-}
-
-// vim: et sw=4 sts=4