Add a truncate filter to the Twig helpers

kolber · Apr 5, 2013 · 95b5dea · 95b5dea
1 parent d2e3331
commit 95b5dea
Showing 1 changed file with 14 additions and 1 deletion.
diff --git a/extensions/twig-extensions.inc.php b/extensions/twig-extensions.inc.php
@@ -14,7 +14,8 @@ public function getFilters() {
     # custom twig filters
     return array(
       'absolute' => new Twig_Filter_Method($this, 'absolute'),
-      'context' => new Twig_Filter_Method($this, 'context')
+      'context' => new Twig_Filter_Method($this, 'context'),
+      'truncate' => new Twig_Filter_Method($this, 'truncate')
     );
   }
 
@@ -169,6 +170,18 @@ function absolute($relative_path) {
     return $server_name.str_replace('/index.php', $relative_path, $_SERVER['SCRIPT_NAME']);
   }
 
+  function truncate($value, $length = 30, $preserve = false, $separator = '...') {
+    if (strlen($value) > $length) {
+      if ($preserve) {
+        if (false !== ($breakpoint = strpos($value, ' ', $length))) {
+          $length = $breakpoint;
+        }
+      }
+      return substr($value, 0, $length) . $separator;
+    }
+    return $value;
+  }
+
 }
 
 ?>