diff -r 000000000000 -r c63de9eb7045 smarty/internals/core.write_file.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/smarty/internals/core.write_file.php	Sun Mar 23 14:59:33 2008 -0400
@@ -0,0 +1,54 @@
+<?php
+/**
+ * Smarty plugin
+ * @package Smarty
+ * @subpackage plugins
+ */
+
+/**
+ * write out a file to disk
+ *
+ * @param string $filename
+ * @param string $contents
+ * @param boolean $create_dirs
+ * @return boolean
+ */
+function smarty_core_write_file($params, &$smarty)
+{
+    $_dirname = dirname($params['filename']);
+
+    if ($params['create_dirs']) {
+        $_params = array('dir' => $_dirname);
+        require_once(SMARTY_CORE_DIR . 'core.create_dir_structure.php');
+        smarty_core_create_dir_structure($_params, $smarty);
+    }
+
+    // write to tmp file, then rename it to avoid file locking race condition
+    $_tmp_file = tempnam($_dirname, 'wrt');
+
+    if (!($fd = @fopen($_tmp_file, 'wb'))) {
+        $_tmp_file = $_dirname . DIRECTORY_SEPARATOR . uniqid('wrt');
+        if (!($fd = @fopen($_tmp_file, 'wb'))) {
+            $smarty->trigger_error("problem writing temporary file '$_tmp_file'");
+            return false;
+        }
+    }
+
+    fwrite($fd, $params['contents']);
+    fclose($fd);
+
+    if (DIRECTORY_SEPARATOR == '\\' || !@rename($_tmp_file, $params['filename'])) {
+        // On platforms and filesystems that cannot overwrite with rename() 
+        // delete the file before renaming it -- because windows always suffers
+        // this, it is short-circuited to avoid the initial rename() attempt
+        @unlink($params['filename']);
+        @rename($_tmp_file, $params['filename']);
+    }
+    @chmod($params['filename'], $smarty->_file_perms);
+
+    return true;
+}
+
+/* vim: set expandtab: */
+
+?>
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