1 files changed, 42 insertions, 17 deletions

diff --git a/library/Smarty/libs/plugins/modifier.capitalize.php b/library/Smarty/libs/plugins/modifier.capitalize.php
index a78e3632a..a8ad76370 100644
--- a/library/Smarty/libs/plugins/modifier.capitalize.php
+++ b/library/Smarty/libs/plugins/modifier.capitalize.php
@@ -1,25 +1,24 @@
 <?php
 /**
  * Smarty plugin
- * 
- * @package Smarty
+ *
+ * @package    Smarty
  * @subpackage PluginsModifier
  */
 
 /**
  * Smarty capitalize modifier plugin
- * 
  * Type:     modifier<br>
  * Name:     capitalize<br>
  * Purpose:  capitalize words in the string
- *
  * {@internal {$string|capitalize:true:true} is the fastest option for MBString enabled systems }}
  *
  * @param string  $string    string to capitalize
  * @param boolean $uc_digits also capitalize "x123" to "X123"
  * @param boolean $lc_rest   capitalize first letters, lowercase all following letters "aAa" to "Aaa"
+ *
  * @return string capitalized string
- * @author Monte Ohrt <monte at ohrt dot com> 
+ * @author Monte Ohrt <monte at ohrt dot com>
  * @author Rodney Rehm
  */
 function smarty_modifier_capitalize($string, $uc_digits = false, $lc_rest = false)
@@ -27,39 +26,65 @@ function smarty_modifier_capitalize($string, $uc_digits = false, $lc_rest = fals
     if (Smarty::$_MBSTRING) {
         if ($lc_rest) {
             // uppercase (including hyphenated words)
-            $upper_string = mb_convert_case( $string, MB_CASE_TITLE, Smarty::$_CHARSET );
+            $upper_string = mb_convert_case($string, MB_CASE_TITLE, Smarty::$_CHARSET);
         } else {
             // uppercase word breaks
-            $upper_string = preg_replace("!(^|[^\p{L}'])([\p{Ll}])!eS" . Smarty::$_UTF8_MODIFIER, "stripslashes('\\1').mb_convert_case(stripslashes('\\2'),MB_CASE_UPPER, '" . addslashes(Smarty::$_CHARSET) . "')", $string);
+            $upper_string = preg_replace_callback("!(^|[^\p{L}'])([\p{Ll}])!S" . Smarty::$_UTF8_MODIFIER, 'smarty_mod_cap_mbconvert_cb', $string);
         }
         // check uc_digits case
         if (!$uc_digits) {
             if (preg_match_all("!\b([\p{L}]*[\p{N}]+[\p{L}]*)\b!" . Smarty::$_UTF8_MODIFIER, $string, $matches, PREG_OFFSET_CAPTURE)) {
-                foreach($matches[1] as $match) {
+                foreach ($matches[1] as $match) {
                     $upper_string = substr_replace($upper_string, mb_strtolower($match[0], Smarty::$_CHARSET), $match[1], strlen($match[0]));
                 }
-            } 
+            }
         }
-        $upper_string = preg_replace("!((^|\s)['\"])(\w)!e" . Smarty::$_UTF8_MODIFIER, "stripslashes('\\1').mb_convert_case(stripslashes('\\3'),MB_CASE_UPPER, '" . addslashes(Smarty::$_CHARSET) . "')", $upper_string);
+        $upper_string = preg_replace_callback("!((^|\s)['\"])(\w)!" . Smarty::$_UTF8_MODIFIER, 'smarty_mod_cap_mbconvert2_cb', $upper_string);
         return $upper_string;
     }
-    
+
     // lowercase first
     if ($lc_rest) {
         $string = strtolower($string);
     }
     // uppercase (including hyphenated words)
-    $upper_string = preg_replace("!(^|[^\p{L}'])([\p{Ll}])!eS" . Smarty::$_UTF8_MODIFIER, "stripslashes('\\1').ucfirst(stripslashes('\\2'))", $string); 
+    $upper_string = preg_replace_callback("!(^|[^\p{L}'])([\p{Ll}])!S" . Smarty::$_UTF8_MODIFIER, 'smarty_mod_cap_ucfirst_cb', $string);
     // check uc_digits case
     if (!$uc_digits) {
         if (preg_match_all("!\b([\p{L}]*[\p{N}]+[\p{L}]*)\b!" . Smarty::$_UTF8_MODIFIER, $string, $matches, PREG_OFFSET_CAPTURE)) {
-            foreach($matches[1] as $match) {
+            foreach ($matches[1] as $match) {
                 $upper_string = substr_replace($upper_string, strtolower($match[0]), $match[1], strlen($match[0]));
             }
-        } 
+        }
     }
-    $upper_string = preg_replace("!((^|\s)['\"])(\w)!e" . Smarty::$_UTF8_MODIFIER, "stripslashes('\\1').strtoupper(stripslashes('\\3'))", $upper_string);
+    $upper_string = preg_replace_callback("!((^|\s)['\"])(\w)!" . Smarty::$_UTF8_MODIFIER, 'smarty_mod_cap_ucfirst2_cb', $upper_string);
     return $upper_string;
-} 
+}
+
+/* 
+ *
+ * Bug: create_function() use exhausts memory when used in long loops
+ * Fix: use declared functions for callbacks instead of using create_function()
+ * Note: This can be fixed using anonymous functions instead, but that requires PHP >= 5.3
+ *
+ * @author Kyle Renfrow
+ */
+function smarty_mod_cap_mbconvert_cb($matches)
+{
+    return stripslashes($matches[1]) . mb_convert_case(stripslashes($matches[2]), MB_CASE_UPPER, Smarty::$_CHARSET);
+}
+
+function smarty_mod_cap_mbconvert2_cb($matches)
+{
+    return stripslashes($matches[1]) . mb_convert_case(stripslashes($matches[3]), MB_CASE_UPPER, Smarty::$_CHARSET);
+}
+
+function smarty_mod_cap_ucfirst_cb($matches)
+{
+    return stripslashes($matches[1]) . ucfirst(stripslashes($matches[2]));
+}
 
-?>
\ No newline at end of file
+function smarty_mod_cap_ucfirst2_cb($matches)
+{
+    return stripslashes($matches[1]) . ucfirst(stripslashes($matches[3]));
+}