From 449108671e2e7885eaad75d22bf5b17dafce8cf3 Mon Sep 17 00:00:00 2001
From: Harald Wolff <haraldwolff@skyoffice>
Date: Wed, 27 Mar 2019 11:32:29 +0100
Subject: [PATCH] WIP

---
 FileLogger.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/FileLogger.cs b/FileLogger.cs
index 007d368..dd92128 100644
--- a/FileLogger.cs
+++ b/FileLogger.cs
@@ -15,7 +15,14 @@ namespace ln.logging
 
         private void openLogFile(string filename)
         {
-            fileStream = new FileStream(filename, FileMode.Append);
+            if (File.Exists(filename))
+            {
+                String oldfn = String.Format("{0}.old", filename);
+                if (File.Exists(oldfn))
+                    File.Delete(oldfn);
+                File.Move(filename, oldfn);
+            }
+            fileStream = new FileStream(filename, FileMode.Create);
             writer = new StreamWriter(fileStream);
         }