1 files changed, 148 insertions, 0 deletions

diff --git a/src/wixext/DifxAppCompiler.cs b/src/wixext/DifxAppCompiler.cs
new file mode 100644
index 00000000..63396932
--- /dev/null
+++ b/src/wixext/DifxAppCompiler.cs
@@ -0,0 +1,148 @@
+// 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.Extensions
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Xml.Linq;
+    using WixToolset.Data;
+    using WixToolset.Extensibility;
+
+    /// <summary>
+    /// The compiler for the WiX Toolset Driver Install Frameworks for Applications Extension.
+    /// </summary>
+    public sealed class DifxAppCompiler : CompilerExtension
+    {
+        private HashSet<string> components;
+
+        /// <summary>
+        /// Instantiate a new DifxAppCompiler.
+        /// </summary>
+        public DifxAppCompiler()
+        {
+            this.Namespace = "http://wixtoolset.org/schemas/v4/wxs/difxapp";
+            this.components = new HashSet<string>();
+        }
+
+        /// <summary>
+        /// Processes an element for the Compiler.
+        /// </summary>
+        /// <param name="sourceLineNumbers">Source line number for the parent element.</param>
+        /// <param name="parentElement">Parent element of element to process.</param>
+        /// <param name="element">Element to process.</param>
+        /// <param name="contextValues">Extra information about the context in which this element is being parsed.</param>
+        public override void ParseElement(XElement parentElement, XElement element, IDictionary<string, string> context)
+        {
+            switch (parentElement.Name.LocalName)
+            {
+                case "Component":
+                    string componentId = context["ComponentId"];
+                    string directoryId = context["DirectoryId"];
+
+                    switch (element.Name.LocalName)
+                    {
+                        case "Driver":
+                            this.ParseDriverElement(element, componentId);
+                            break;
+                        default:
+                            this.Core.UnexpectedElement(parentElement, element);
+                            break;
+                    }
+                    break;
+                default:
+                    this.Core.UnexpectedElement(parentElement, element);
+                    break;
+            }
+        }
+
+        /// <summary>
+        /// Parses a Driver element.
+        /// </summary>
+        /// <param name="node">Element to parse.</param>
+        /// <param name="componentId">Identifier for parent component.</param>
+        private void ParseDriverElement(XElement node, string componentId)
+        {
+            SourceLineNumber sourceLineNumbers = Preprocessor.GetSourceLineNumbers(node);
+            int attributes = 0;
+            int sequence = CompilerConstants.IntegerNotSet;
+
+            // check the number of times a Driver element has been nested under this Component element
+            if (null != componentId)
+            {
+                if (this.components.Contains(componentId))
+                {
+                    this.Core.OnMessage(WixErrors.TooManyElements(sourceLineNumbers, "Component", node.Name.LocalName, 1));
+                }
+                else
+                {
+                    this.components.Add(componentId);
+                }
+            }
+
+            foreach (XAttribute attrib in node.Attributes())
+            {
+                if (String.IsNullOrEmpty(attrib.Name.NamespaceName) || this.Namespace == attrib.Name.Namespace)
+                {
+                    switch (attrib.Name.LocalName)
+                    {
+                    case "AddRemovePrograms":
+                        if (YesNoType.No == this.Core.GetAttributeYesNoValue(sourceLineNumbers, attrib))
+                        {
+                            attributes |= 0x4;
+                        }
+                        break;
+                    case "DeleteFiles":
+                        if (YesNoType.Yes == this.Core.GetAttributeYesNoValue(sourceLineNumbers, attrib))
+                        {
+                            attributes |= 0x10;
+                        }
+                        break;
+                    case "ForceInstall":
+                        if (YesNoType.Yes == this.Core.GetAttributeYesNoValue(sourceLineNumbers, attrib))
+                        {
+                            attributes |= 0x1;
+                        }
+                        break;
+                    case "Legacy":
+                        if (YesNoType.Yes == this.Core.GetAttributeYesNoValue(sourceLineNumbers, attrib))
+                        {
+                            attributes |= 0x8;
+                        }
+                        break;
+                    case "PlugAndPlayPrompt":
+                        if (YesNoType.No == this.Core.GetAttributeYesNoValue(sourceLineNumbers, attrib))
+                        {
+                            attributes |= 0x2;
+                        }
+                        break;
+                    case "Sequence":
+                        sequence = this.Core.GetAttributeIntegerValue(sourceLineNumbers, attrib, 0, int.MaxValue);
+                        break;
+                    default:
+                        this.Core.UnexpectedAttribute(node, attrib);
+                        break;
+                    }
+                }
+                else
+                {
+                    this.Core.ParseExtensionAttribute(node, attrib);
+                }
+            }
+
+            this.Core.ParseForExtensionElements(node);
+
+            if (!this.Core.EncounteredError)
+            {
+                Row row = this.Core.CreateRow(sourceLineNumbers, "MsiDriverPackages");
+                row[0] = componentId;
+                row[1] = attributes;
+                if (CompilerConstants.IntegerNotSet != sequence)
+                {
+                    row[2] = sequence;
+                }
+
+                this.Core.CreateSimpleReference(sourceLineNumbers, "CustomAction", "MsiProcessDrivers");
+            }
+        }
+    }
+}