1 files changed, 53 insertions, 0 deletions

diff --git a/src/WixToolset.Core/Bind/ExtractEmbeddedFilesCommand.cs b/src/WixToolset.Core/Bind/ExtractEmbeddedFilesCommand.cs
new file mode 100644
index 00000000..68bfd8d7
--- /dev/null
+++ b/src/WixToolset.Core/Bind/ExtractEmbeddedFilesCommand.cs
@@ -0,0 +1,53 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Bind
+{
+    using System.IO;
+    using System.Reflection;
+    using WixToolset.Data;
+
+    internal class ExtractEmbeddedFilesCommand : ICommand
+    {
+        public ExtractEmbeddedFiles FilesWithEmbeddedFiles { private get; set; }
+
+        public void Execute()
+        {
+            foreach (var baseUri in this.FilesWithEmbeddedFiles.Uris)
+            {
+                Stream stream = null;
+                try
+                {
+                    // If the embedded files are stored in an assembly resource stream (usually
+                    // a .wixlib embedded in a WixExtension).
+                    if ("embeddedresource" == baseUri.Scheme)
+                    {
+                        string assemblyPath = Path.GetFullPath(baseUri.LocalPath);
+                        string resourceName = baseUri.Fragment.TrimStart('#');
+
+                        Assembly assembly = Assembly.LoadFile(assemblyPath);
+                        stream = assembly.GetManifestResourceStream(resourceName);
+                    }
+                    else // normal file (usually a binary .wixlib on disk).
+                    {
+                        stream = File.OpenRead(baseUri.LocalPath);
+                    }
+
+                    using (FileStructure fs = FileStructure.Read(stream))
+                    {
+                        foreach (var embeddedFile in this.FilesWithEmbeddedFiles.GetExtractFilesForUri(baseUri))
+                        {
+                            fs.ExtractEmbeddedFile(embeddedFile.EmbeddedFileIndex, embeddedFile.OutputPath);
+                        }
+                    }
+                }
+                finally
+                {
+                    if (null != stream)
+                    {
+                        stream.Close();
+                    }
+                }
+            }
+        }
+    }
+}