Add workspace_maitenance.py including the implementation
of generate_name_for_obsolete_backup()

Signed-off-by: Ashley E Desimone <ashley.e.desimone@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Puja Pandya <puja.pandya@intel.com>
Cc: Erik Bjorge <erik.c.bjorge@intel.com>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Prince Agyeman <prince.agyeman@intel.com>
---
 .../workspace_maitenance/workspace_maitenance.py   | 30 ++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 edkrepo/common/workspace_maitenance/workspace_maitenance.py

diff --git a/edkrepo/common/workspace_maitenance/workspace_maitenance.py b/edkrepo/common/workspace_maitenance/workspace_maitenance.py
new file mode 100644
index 0000000..83204f8
--- /dev/null
+++ b/edkrepo/common/workspace_maitenance/workspace_maitenance.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+#
+## @file
+# workspace_maitenance.py
+#
+# Copyright (c) 2017- 2020, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+
+''' Contains shared workspace maitenance functions. '''
+
+import os
+
+def generate_name_for_obsolete_backup(absolute_path):
+    if not os.path.exists(absolute_path):
+        raise ValueError("{} does not exist".format(absolute_path))
+    original_name = os.path.basename(absolute_path)
+    dir_name = os.path.dirname(absolute_path)
+    unique_name = ""
+    unique_name_found = False
+    index = 1
+    while not unique_name_found:
+        if index == 1:
+            unique_name = "{}_old".format(original_name)
+        else:
+            unique_name = "{}_old{}".format(original_name, index)
+        if not os.path.exists(os.path.join(dir_name, unique_name)):
+            unique_name_found = True
+        index += 1
+    return unique_name
\ No newline at end of file
-- 
2.16.2.windows.1


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