1 files changed, 118 insertions, 0 deletions

diff --git a/src/WixToolset.BuildTasks/RefreshGeneratedFile.cs b/src/WixToolset.BuildTasks/RefreshGeneratedFile.cs
new file mode 100644
index 00000000..fdfc4774
--- /dev/null
+++ b/src/WixToolset.BuildTasks/RefreshGeneratedFile.cs
@@ -0,0 +1,118 @@
+// 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.BuildTasks
+{
+    using System;
+    using System.Collections;
+    using System.Globalization;
+    using System.IO;
+    using System.Text.RegularExpressions;
+    using System.Xml;
+    using Microsoft.Build.Framework;
+    using Microsoft.Build.Utilities;
+
+    /// <summary>
+    /// This task refreshes the generated file that contains ComponentGroupRefs
+    /// to harvested output.
+    /// </summary>
+    public class RefreshGeneratedFile : Task
+    {
+        private static readonly Regex AddPrefix = new Regex(@"^[^a-zA-Z_]", RegexOptions.Compiled);
+        private static readonly Regex IllegalIdentifierCharacters = new Regex(@"[^A-Za-z0-9_\.]|\.{2,}", RegexOptions.Compiled); // non 'words' and assorted valid characters
+
+        private ITaskItem[] generatedFiles;
+        private ITaskItem[] projectReferencePaths;
+
+        /// <summary>
+        /// The list of files to generate.
+        /// </summary>
+        [Required]
+        public ITaskItem[] GeneratedFiles
+        {
+            get { return this.generatedFiles; }
+            set { this.generatedFiles = value; }
+        }
+
+        /// <summary>
+        /// All the project references in the project.
+        /// </summary>
+        [Required]
+        public ITaskItem[] ProjectReferencePaths
+        {
+            get { return this.projectReferencePaths; }
+            set { this.projectReferencePaths = value; }
+        }
+
+        /// <summary>
+        /// Gets a complete list of external cabs referenced by the given installer database file.
+        /// </summary>
+        /// <returns>True upon completion of the task execution.</returns>
+        public override bool Execute()
+        {
+            ArrayList componentGroupRefs = new ArrayList();
+            for (int i = 0; i < this.ProjectReferencePaths.Length; i++)
+            {
+                ITaskItem item = this.ProjectReferencePaths[i];
+
+                if (!String.IsNullOrEmpty(item.GetMetadata(Common.DoNotHarvest)))
+                {
+                    continue;
+                }
+
+                string projectPath = CreateProjectReferenceDefineConstants.GetProjectPath(this.ProjectReferencePaths, i);
+                string projectName = Path.GetFileNameWithoutExtension(projectPath);
+                string referenceName = Common.GetIdentifierFromName(CreateProjectReferenceDefineConstants.GetReferenceName(item, projectName));
+
+                string[] pogs = item.GetMetadata("RefProjectOutputGroups").Split(';');
+                foreach (string pog in pogs)
+                {
+                    if (!String.IsNullOrEmpty(pog))
+                    {
+                        componentGroupRefs.Add(String.Format(CultureInfo.InvariantCulture, "{0}.{1}", referenceName, pog));
+                    }
+                }
+            }
+
+            XmlDocument doc = new XmlDocument();
+
+            XmlProcessingInstruction head = doc.CreateProcessingInstruction("xml", "version='1.0' encoding='UTF-8'");
+            doc.AppendChild(head);
+
+            XmlElement rootElement = doc.CreateElement("Wix");
+            rootElement.SetAttribute("xmlns", "http://wixtoolset.org/schemas/v4/wxs");
+            doc.AppendChild(rootElement);
+
+            XmlElement fragment = doc.CreateElement("Fragment");
+            rootElement.AppendChild(fragment);
+
+            XmlElement componentGroup = doc.CreateElement("ComponentGroup");
+            componentGroup.SetAttribute("Id", "Product.Generated");
+            fragment.AppendChild(componentGroup);
+
+            foreach (string componentGroupRef in componentGroupRefs)
+            {
+                XmlElement componentGroupRefElement = doc.CreateElement("ComponentGroupRef");
+                componentGroupRefElement.SetAttribute("Id", componentGroupRef);
+                componentGroup.AppendChild(componentGroupRefElement);
+            }
+
+            foreach (ITaskItem item in this.GeneratedFiles)
+            {
+                string fullPath = item.GetMetadata("FullPath");
+
+                componentGroup.SetAttribute("Id", Path.GetFileNameWithoutExtension(fullPath));
+                try
+                {
+                    doc.Save(fullPath);
+                }
+                catch (Exception e)
+                {
+                    // e.Message will be something like: "Access to the path 'fullPath' is denied."
+                    this.Log.LogMessage(MessageImportance.High, "Unable to save generated file to '{0}'. {1}", fullPath, e.Message);
+                }
+            }
+
+            return true;
+        }
+    }
+}