From 7ba4a429e22bf36c98ccefc076110837c0a9e9fd Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien.potencier@gmail.com>
Date: Thu, 19 Sep 2013 13:43:59 +0200
Subject: [PATCH] made escaping work on hhvm

---
 lib/Twig/Extension/Core.php |   47 +++++++++++++++++++++++++++---------------
 1 files changed, 30 insertions(+), 17 deletions(-)

diff --git a/lib/Twig/Extension/Core.php b/lib/Twig/Extension/Core.php
index 21f4c97..62bf8f3 100644
--- a/lib/Twig/Extension/Core.php
+++ b/lib/Twig/Extension/Core.php
@@ -1,7 +1,12 @@
 <?php
 
 if (!defined('ENT_SUBSTITUTE')) {
-    define('ENT_SUBSTITUTE', 8);
+    if ('hiphop' === substr(PHP_VERSION, -6)) {
+        // hhvm does not support this and worst, 8 is taken by another flag
+        define('ENT_SUBSTITUTE', 0);
+    } else {
+        define('ENT_SUBSTITUTE', 8);
+    }
 }
 
 /*
@@ -892,22 +897,30 @@ function twig_escape_filter(Twig_Environment $env, $string, $strategy = 'html',
             // Using a static variable to avoid initializing the array
             // each time the function is called. Moving the declaration on the
             // top of the function slow downs other escaping strategies.
-            static $htmlspecialcharsCharsets = array(
-                'ISO-8859-1' => true, 'ISO8859-1' => true,
-                'ISO-8859-15' => true, 'ISO8859-15' => true,
-                'utf-8' => true, 'UTF-8' => true,
-                'CP866' => true, 'IBM866' => true, '866' => true,
-                'CP1251' => true, 'WINDOWS-1251' => true, 'WIN-1251' => true,
-                '1251' => true,
-                'CP1252' => true, 'WINDOWS-1252' => true, '1252' => true,
-                'KOI8-R' => true, 'KOI8-RU' => true, 'KOI8R' => true,
-                'BIG5' => true, '950' => true,
-                'GB2312' => true, '936' => true,
-                'BIG5-HKSCS' => true,
-                'SHIFT_JIS' => true, 'SJIS' => true, '932' => true,
-                'EUC-JP' => true, 'EUCJP' => true,
-                'ISO8859-5' => true, 'ISO-8859-5' => true, 'MACROMAN' => true,
-            );
+            static $htmlspecialcharsCharsets;
+
+            if (null === $htmlspecialcharsCharsets) {
+                if ('hiphop' === substr(PHP_VERSION, -6)) {
+                    $htmlspecialcharsCharsets = array('utf-8' => true, 'UTF-8' => true);
+                } else {
+                    $htmlspecialcharsCharsets = array(
+                        'ISO-8859-1' => true, 'ISO8859-1' => true,
+                        'ISO-8859-15' => true, 'ISO8859-15' => true,
+                        'utf-8' => true, 'UTF-8' => true,
+                        'CP866' => true, 'IBM866' => true, '866' => true,
+                        'CP1251' => true, 'WINDOWS-1251' => true, 'WIN-1251' => true,
+                        '1251' => true,
+                        'CP1252' => true, 'WINDOWS-1252' => true, '1252' => true,
+                        'KOI8-R' => true, 'KOI8-RU' => true, 'KOI8R' => true,
+                        'BIG5' => true, '950' => true,
+                        'GB2312' => true, '936' => true,
+                        'BIG5-HKSCS' => true,
+                        'SHIFT_JIS' => true, 'SJIS' => true, '932' => true,
+                        'EUC-JP' => true, 'EUCJP' => true,
+                        'ISO8859-5' => true, 'ISO-8859-5' => true, 'MACROMAN' => true,
+                    );
+                }
+            }
 
             if (isset($htmlspecialcharsCharsets[$charset])) {
                 return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
-- 
1.7.2.5