From 47cc3158fdc358ded066a5f83d54eaeacdb09955 Mon Sep 17 00:00:00 2001
From: Dion Moult <dion@thinkmoult.com>
Date: Fri, 16 Jun 2023 13:22:33 +1000
Subject: [PATCH] IfcPatch can now support patches that write to arbitrary
 files or have no output.

---
 src/ifcpatch/ifcpatch/__init__.py | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/ifcpatch/ifcpatch/__init__.py b/src/ifcpatch/ifcpatch/__init__.py
index 3ad25ee8b3..549990e06a 100644
--- a/src/ifcpatch/ifcpatch/__init__.py
+++ b/src/ifcpatch/ifcpatch/__init__.py
@@ -18,9 +18,9 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with IfcPatch.  If not, see <http://www.gnu.org/licenses/>.
 
+import os
 import ifcopenshell
 import logging
-import os
 import typing
 import inspect
 import collections
@@ -95,9 +95,14 @@ def write(output, filepath):
     :return: None
     :rtype: None
     """
-    if isinstance(output, str):
-        with open(filepath, "w") as text_file:
-            text_file.write(output)
+    if output is None:
+        return
+    elif isinstance(output, str):
+        if os.path.exists(output):
+            os.rename(output, filepath)
+        else:
+            with open(filepath, "w") as text_file:
+                text_file.write(output)
     else:
         output.write(filepath)