use atomic write in it::file_put

1 files changed, 6 insertions, 3 deletions

diff --git a/it.class b/it.class
index 3dc2fcd..fc1930c 100644
--- a/it.class
+++ b/it.class
@@ -998,9 +998,9 @@ static function file_get($filename, $p = array())
 }
 
 /**
- * Write data to a file with several serialization modes
+ * Atomically write data to a file with several serialization modes
  * @param $filename name of file to write or - for stdout
- * @param $data data to write
+ * @param $data data to write, string by default
  * @param $p['keyval'] $data must be an assoc array and is written as tab-separated lines
  * @param $p['lines'] write array of lines, appending newline
  */
@@ -1011,7 +1011,10 @@ static function file_put($filename, $data, $p = array())
 	else if ($p['lines'])
 		$data = count((array)$data) ? join("\n", (array)$data) ."\n" : "";
 
-	return ($out = fopen($filename == "-" ? "php://stdout" : $filename, "w")) && (fputs($out, $data) === strlen($data)) && fclose($out);
+	if (($result = file_put_contents($filename == "-" ? "php://stdout" : "$filename.tmp." . getmypid(), $data)) !== false && $filename != "-")
+			$result = rename("$filename.tmp." . getmypid(), $filename);
+
+	return $result;
 }
 
 /**