1 files changed, 0 insertions, 73 deletions
diff --git a/lib/htmlpurifier/library/HTMLPurifier/AttrDef/Lang.php b/lib/htmlpurifier/library/HTMLPurifier/AttrDef/Lang.php
deleted file mode 100644
index 10e6da56d..000000000
--- a/lib/htmlpurifier/library/HTMLPurifier/AttrDef/Lang.php
+++ /dev/null
@@ -1,73 +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
-{
-
-    public function validate($string, $config, $context) {
-
-        $string = trim($string);
-        if (!$string) return false;
-
-        $subtags = explode('-', $string);
-        $num_subtags = count($subtags);
-
-        if ($num_subtags == 0) return false; // sanity check
-
-        // 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