--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/smarty/internals/core.write_cache_file.php	Sun Mar 23 14:59:33 2008 -0400
@@ -0,0 +1,96 @@
+<?php
+/**
+ * Smarty plugin
+ * @package Smarty
+ * @subpackage plugins
+ */
+
+/**
+ * Prepend the cache information to the cache file
+ * and write it
+ *
+ * @param string $tpl_file
+ * @param string $cache_id
+ * @param string $compile_id
+ * @param string $results
+ * @return true|null
+ */
+
+ // $tpl_file, $cache_id, $compile_id, $results
+
+function smarty_core_write_cache_file($params, &$smarty)
+{
+
+    // put timestamp in cache header
+    $smarty->_cache_info['timestamp'] = time();
+    if ($smarty->cache_lifetime > -1){
+        // expiration set
+        $smarty->_cache_info['expires'] = $smarty->_cache_info['timestamp'] + $smarty->cache_lifetime;
+    } else {
+        // cache will never expire
+        $smarty->_cache_info['expires'] = -1;
+    }
+
+    // collapse nocache.../nocache-tags
+    if (preg_match_all('!\{(/?)nocache\:[0-9a-f]{32}#\d+\}!', $params['results'], $match, PREG_PATTERN_ORDER)) {
+        // remove everything between every pair of outermost noache.../nocache-tags
+        // and replace it by a single nocache-tag
+        // this new nocache-tag will be replaced by dynamic contents in
+        // smarty_core_process_compiled_includes() on a cache-read
+        
+        $match_count = count($match[0]);
+        $results = preg_split('!(\{/?nocache\:[0-9a-f]{32}#\d+\})!', $params['results'], -1, PREG_SPLIT_DELIM_CAPTURE);
+        
+        $level = 0;
+        $j = 0;
+        for ($i=0, $results_count = count($results); $i < $results_count && $j < $match_count; $i++) {
+            if ($results[$i] == $match[0][$j]) {
+                // nocache tag
+                if ($match[1][$j]) { // closing tag
+                    $level--;
+                    unset($results[$i]);
+                } else { // opening tag
+                    if ($level++ > 0) unset($results[$i]);
+                }
+                $j++;
+            } elseif ($level > 0) {
+                unset($results[$i]);
+            }
+        }
+        $params['results'] = implode('', $results);
+    }
+    $smarty->_cache_info['cache_serials'] = $smarty->_cache_serials;
+
+    // prepend the cache header info into cache file
+    $_cache_info = serialize($smarty->_cache_info);
+    $params['results'] = strlen($_cache_info) . "\n" . $_cache_info . $params['results'];
+
+    if (!empty($smarty->cache_handler_func)) {
+        // use cache_handler function
+        call_user_func_array($smarty->cache_handler_func,
+                             array('write', &$smarty, &$params['results'], $params['tpl_file'], $params['cache_id'], $params['compile_id'], null));
+    } else {
+        // use local cache file
+
+        if(!@is_writable($smarty->cache_dir)) {
+            // cache_dir not writable, see if it exists
+            if(!@is_dir($smarty->cache_dir)) {
+                $smarty->trigger_error('the $cache_dir \'' . $smarty->cache_dir . '\' does not exist, or is not a directory.', E_USER_ERROR);
+                return false;
+            }
+            $smarty->trigger_error('unable to write to $cache_dir \'' . realpath($smarty->cache_dir) . '\'. Be sure $cache_dir is writable by the web server user.', E_USER_ERROR);
+            return false;
+        }
+
+        $_auto_id = $smarty->_get_auto_id($params['cache_id'], $params['compile_id']);
+        $_cache_file = $smarty->_get_auto_filename($smarty->cache_dir, $params['tpl_file'], $_auto_id);
+        $_params = array('filename' => $_cache_file, 'contents' => $params['results'], 'create_dirs' => true);
+        require_once(SMARTY_CORE_DIR . 'core.write_file.php');
+        smarty_core_write_file($_params, $smarty);
+        return true;
+    }
+}
+
+/* vim: set expandtab: */
+
+?>