Merge pull request #75 from jnm2/documentation_file_already_exists

Skip copying documentation file when target already exists
tunnelvisionlabs · Jan 3, 2020 · 52022df · 52022df
2 parents 7c75c5d + 890b117
commit 52022df
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Showing 2 changed files with 22 additions and 2 deletions.
diff --git a/TunnelVisionLabs.ReferenceAssemblyAnnotator/AnnotatorBuildTask.cs b/TunnelVisionLabs.ReferenceAssemblyAnnotator/AnnotatorBuildTask.cs
@@ -101,9 +101,16 @@ public override bool Execute()
 
             string sourceDocumentation = Path.ChangeExtension(unannotatedReferenceAssembly, ".xml");
             string targetDocumentation = Path.ChangeExtension(outputAssembly, ".xml");
-            if (File.Exists(sourceDocumentation))
+            if (File.Exists(sourceDocumentation) && !File.Exists(targetDocumentation))
             {
-                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,
+    }
+}