1 files changed, 101 insertions, 0 deletions

diff --git a/src/api/burn/WixToolset.Mba.Core/BootstrapperApplicationData.cs b/src/api/burn/WixToolset.Mba.Core/BootstrapperApplicationData.cs
new file mode 100644
index 00000000..739a08bb
--- /dev/null
+++ b/src/api/burn/WixToolset.Mba.Core/BootstrapperApplicationData.cs
@@ -0,0 +1,101 @@
+// 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.Mba.Core
+{
+    using System;
+    using System.IO;
+    using System.Xml.XPath;
+
+    /// <summary>
+    /// Utility class for reading BootstrapperApplicationData.xml.
+    /// </summary>
+    public class BootstrapperApplicationData : IBootstrapperApplicationData
+    {
+        /// <summary>
+        /// 
+        /// </summary>
+        public const string DefaultFileName = "BootstrapperApplicationData.xml";
+
+        /// <summary>
+        /// 
+        /// </summary>
+        public const string XMLNamespace = "http://wixtoolset.org/schemas/v4/BootstrapperApplicationData";
+
+        /// <summary>
+        /// The default path of where the BA was extracted to.
+        /// </summary>
+        public static readonly DirectoryInfo DefaultFolder;
+
+        /// <summary>
+        /// The default path to BootstrapperApplicationData.xml.
+        /// </summary>
+        public static readonly FileInfo DefaultFile;
+
+        static BootstrapperApplicationData()
+        {
+            DefaultFolder = new DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory);
+            DefaultFile = new FileInfo(Path.Combine(DefaultFolder.FullName, DefaultFileName));
+        }
+
+        /// <inheritdoc/>
+        public FileInfo BADataFile { get; private set; }
+
+        /// <inheritdoc/>
+        public IBundleInfo Bundle { get; private set; }
+
+        /// <summary>
+        /// Uses the default location for BootstrapperApplicationData.xml.
+        /// </summary>
+        public BootstrapperApplicationData() : this(DefaultFile) { }
+
+        /// <summary>
+        /// Uses the given file for BootstrapperApplicationData.xml.
+        /// </summary>
+        /// <param name="baDataFile"></param>
+        public BootstrapperApplicationData(FileInfo baDataFile)
+        {
+            this.BADataFile = baDataFile;
+
+            using (FileStream fs = this.BADataFile.OpenRead())
+            {
+                this.Bundle = BundleInfo.ParseBundleFromStream(fs);
+            }
+        }
+
+        /// <summary>
+        /// Utility method for parsing BootstrapperApplicationData.xml.
+        /// </summary>
+        /// <param name="node"></param>
+        /// <param name="attributeName"></param>
+        /// <returns></returns>
+        public static string GetAttribute(XPathNavigator node, string attributeName)
+        {
+            XPathNavigator attribute = node.SelectSingleNode("@" + attributeName);
+
+            if (attribute == null)
+            {
+                return null;
+            }
+
+            return attribute.Value;
+        }
+
+        /// <summary>
+        /// Utility method for parsing BootstrapperApplicationData.xml.
+        /// </summary>
+        /// <param name="node"></param>
+        /// <param name="attributeName"></param>
+        /// <returns></returns>
+        public static bool? GetYesNoAttribute(XPathNavigator node, string attributeName)
+        {
+            string attributeValue = GetAttribute(node, attributeName);
+
+            if (attributeValue == null)
+            {
+                return null;
+            }
+
+            return attributeValue.Equals("yes", StringComparison.InvariantCulture);
+        }
+    }
+}