Implemented plugin architecture.

plugins/modifier.truncate.php

@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * Smarty plugin
+ * -------------------------------------------------------------
+ * Type:     modifier
+ * Name:     truncate
+ * Purpose:  Truncate a string to a certain length if necessary,
+ *           optionally splitting in the middle of a word, and 
+ *           appending the $etc string.
+ * -------------------------------------------------------------
+ */
+function smarty_modifier_truncate($string, $length = 80, $etc = '...',
+                                  $break_words = false)
+{
+    if ($length == 0)
+        return '';
+
+    if (strlen($string) > $length) {
+        $length -= strlen($etc);
+        $fragment = substr($string, 0, $length+1);
+        if ($break_words)
+            $fragment = substr($fragment, 0, -1);
+        else
+            $fragment = preg_replace('/\s+(\S+)?$/', '', $fragment);
+        return $fragment.$etc;
+    } else
+        return $string;
+}
+
+/* vim: set expandtab: */
+
+?>