From: Lukasz Kosewski <lkosewsk@gmail.com>
Date: Sun, 10 Jan 2010 09:07:10 +0000 (-0500)
Subject: index.py:  os.rename() fails on Windows if dstfile already exists.
X-Git-Url: https://git.michaelhowe.org/gitweb/?a=commitdiff_plain;h=49f195951697ef5597336469bb7cbe680d283fc2;p=packages%2Fb%2Fbup.git

index.py:  os.rename() fails on Windows if dstfile already exists.

Hence, we perform an os.unlink on the dstfile if os.rename() receives
an OSError exception, and try again.
---

diff --git a/index.py b/index.py
index 3860087..10ec093 100644
--- a/index.py
+++ b/index.py
@@ -195,7 +195,12 @@ class Writer:
         self.f = None
         if f:
             f.close()
-            os.rename(self.tmpname, self.filename)
+            try:
+                os.rename(self.tmpname, self.filename)
+            except OSError:
+                if os.path.exists(self.filename):
+                    os.unlink(self.filename)
+                os.rename(self.tmpname, self.filename)
 
     def _write(self, data):
         self.f.write(data)