Skip copying documentation file when target already exists

tunnelvisionlabs · Jan 3, 2020 · fe47e42 · fe47e42
1 parent 8b67de6
commit fe47e42
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Showing 2 changed files with 21 additions and 1 deletion.
diff --git a/TunnelVisionLabs.ReferenceAssemblyAnnotator/AnnotatorBuildTask.cs b/TunnelVisionLabs.ReferenceAssemblyAnnotator/AnnotatorBuildTask.cs
@@ -104,7 +104,14 @@ public override bool Execute()
             string targetDocumentation = Path.ChangeExtension(outputAssembly, ".xml");
             if (File.Exists(sourceDocumentation))
             {
-                File.Copy(sourceDocumentation, targetDocumentation);
+                try
+                {
+                    File.Copy(sourceDocumentation, targetDocumentation);
+                }
+                catch (IOException ex) when ((WindowsErrorCode)ex.HResult == WindowsErrorCode.FileExists)
+                {
+                }
+
                 GeneratedDocumentationFiles = new[] { new TaskItem(targetDocumentation) };
             }
             else

diff --git a/TunnelVisionLabs.ReferenceAssemblyAnnotator/WindowsErrorCode.cs b/TunnelVisionLabs.ReferenceAssemblyAnnotator/WindowsErrorCode.cs
@@ -0,0 +1,13 @@
+// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+
+namespace TunnelVisionLabs.ReferenceAssemblyAnnotator
+{
+    internal enum WindowsErrorCode : ushort
+    {
+        /// <summary>
+        /// https://docs.microsoft.com/en-us/windows/win32/debug/system-error-codes--0-499-#error_file_exists
+        /// </summary>
+        FileExists = 80,
+    }
+}