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diff --git a/src/dtf/WixToolset.Dtf.Compression/ArchiveProgressEventArgs.cs b/src/dtf/WixToolset.Dtf.Compression/ArchiveProgressEventArgs.cs
new file mode 100644
index 00000000..5d96d714
--- /dev/null
+++ b/src/dtf/WixToolset.Dtf.Compression/ArchiveProgressEventArgs.cs
@@ -0,0 +1,307 @@
+// 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.Dtf.Compression
+{
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+    /// <summary>
+    /// Contains the data reported in an archive progress event.
+    /// </summary>
+    public class ArchiveProgressEventArgs : EventArgs
+    {
+        private ArchiveProgressType progressType;
+
+        private string currentFileName;
+        private int currentFileNumber;
+        private int totalFiles;
+        private long currentFileBytesProcessed;
+        private long currentFileTotalBytes;
+
+        private string currentArchiveName;
+        private short currentArchiveNumber;
+        private short totalArchives;
+        private long currentArchiveBytesProcessed;
+        private long currentArchiveTotalBytes;
+
+        private long fileBytesProcessed;
+        private long totalFileBytes;
+
+        /// <summary>
+        /// Creates a new ArchiveProgressEventArgs object from specified event parameters.
+        /// </summary>
+        /// <param name="progressType">type of status message</param>
+        /// <param name="currentFileName">name of the file being processed</param>
+        /// <param name="currentFileNumber">number of the current file being processed</param>
+        /// <param name="totalFiles">total number of files to be processed</param>
+        /// <param name="currentFileBytesProcessed">number of bytes processed so far when compressing or extracting a file</param>
+        /// <param name="currentFileTotalBytes">total number of bytes in the current file</param>
+        /// <param name="currentArchiveName">name of the current Archive</param>
+        /// <param name="currentArchiveNumber">current Archive number, when processing a chained set of Archives</param>
+        /// <param name="totalArchives">total number of Archives in a chained set</param>
+        /// <param name="currentArchiveBytesProcessed">number of compressed bytes processed so far during an extraction</param>
+        /// <param name="currentArchiveTotalBytes">total number of compressed bytes to be processed during an extraction</param>
+        /// <param name="fileBytesProcessed">number of uncompressed file bytes processed so far</param>
+        /// <param name="totalFileBytes">total number of uncompressed file bytes to be processed</param>
+        public ArchiveProgressEventArgs(
+            ArchiveProgressType progressType,
+            string currentFileName,
+            int currentFileNumber,
+            int totalFiles,
+            long currentFileBytesProcessed,
+            long currentFileTotalBytes,
+            string currentArchiveName,
+            int currentArchiveNumber,
+            int totalArchives,
+            long currentArchiveBytesProcessed,
+            long currentArchiveTotalBytes,
+            long fileBytesProcessed,
+            long totalFileBytes)
+        {
+            this.progressType = progressType;
+            this.currentFileName = currentFileName;
+            this.currentFileNumber = currentFileNumber;
+            this.totalFiles = totalFiles;
+            this.currentFileBytesProcessed = currentFileBytesProcessed;
+            this.currentFileTotalBytes = currentFileTotalBytes;
+            this.currentArchiveName = currentArchiveName;
+            this.currentArchiveNumber = (short) currentArchiveNumber;
+            this.totalArchives = (short) totalArchives;
+            this.currentArchiveBytesProcessed = currentArchiveBytesProcessed;
+            this.currentArchiveTotalBytes = currentArchiveTotalBytes;
+            this.fileBytesProcessed = fileBytesProcessed;
+            this.totalFileBytes = totalFileBytes;
+        }
+
+        /// <summary>
+        /// Gets the type of status message.
+        /// </summary>
+        /// <value>A <see cref="ArchiveProgressType"/> value indicating what type of progress event occurred.</value>
+        /// <remarks>
+        /// The handler may choose to ignore some types of progress events.
+        /// For example, if the handler will only list each file as it is
+        /// compressed/extracted, it can ignore events that
+        /// are not of type <see cref="ArchiveProgressType.FinishFile"/>.
+        /// </remarks>
+        public ArchiveProgressType ProgressType
+        {
+            get
+            {
+                return this.progressType;
+            }
+        }
+
+        /// <summary>
+        /// Gets the name of the file being processed. (The name of the file within the Archive; not the external
+        /// file path.) Also includes the internal path of the file, if any.  Valid for
+        /// <see cref="ArchiveProgressType.StartFile"/>, <see cref="ArchiveProgressType.PartialFile"/>,
+        /// and <see cref="ArchiveProgressType.FinishFile"/> messages.
+        /// </summary>
+        /// <value>The name of the file currently being processed, or null if processing
+        /// is currently at the stream or archive level.</value>
+        public string CurrentFileName
+        {
+            get
+            {
+                return this.currentFileName;
+            }
+        }
+
+        /// <summary>
+        /// Gets the number of the current file being processed. The first file is number 0, and the last file
+        /// is <see cref="TotalFiles"/>-1. Valid for <see cref="ArchiveProgressType.StartFile"/>,
+        /// <see cref="ArchiveProgressType.PartialFile"/>, and <see cref="ArchiveProgressType.FinishFile"/> messages.
+        /// </summary>
+        /// <value>The number of the file currently being processed, or the most recent
+        /// file processed if processing is currently at the stream or archive level.</value>
+        public int CurrentFileNumber
+        {
+            get
+            {
+                return this.currentFileNumber;
+            }
+        }
+
+        /// <summary>
+        /// Gets the total number of files to be processed.  Valid for all message types.
+        /// </summary>
+        /// <value>The total number of files to be processed that are known so far.</value>
+        public int TotalFiles
+        {
+            get
+            {
+                return this.totalFiles;
+            }
+        }
+
+        /// <summary>
+        /// Gets the number of bytes processed so far when compressing or extracting a file.  Valid for
+        /// <see cref="ArchiveProgressType.StartFile"/>, <see cref="ArchiveProgressType.PartialFile"/>,
+        /// and <see cref="ArchiveProgressType.FinishFile"/> messages.
+        /// </summary>
+        /// <value>The number of uncompressed bytes processed so far for the current file,
+        /// or 0 if processing is currently at the stream or archive level.</value>
+        public long CurrentFileBytesProcessed
+        {
+            get
+            {
+                return this.currentFileBytesProcessed;
+            }
+        }
+
+        /// <summary>
+        /// Gets the total number of bytes in the current file.  Valid for <see cref="ArchiveProgressType.StartFile"/>,
+        /// <see cref="ArchiveProgressType.PartialFile"/>, and <see cref="ArchiveProgressType.FinishFile"/> messages.
+        /// </summary>
+        /// <value>The uncompressed size of the current file being processed,
+        /// or 0 if processing is currently at the stream or archive level.</value>
+        public long CurrentFileTotalBytes
+        {
+            get
+            {
+                return this.currentFileTotalBytes;
+            }
+        }
+
+        /// <summary>
+        /// Gets the name of the current archive.  Not necessarily the name of the archive on disk.
+        /// Valid for all message types.
+        /// </summary>
+        /// <value>The name of the current archive, or an empty string if no name was specified.</value>
+        public string CurrentArchiveName
+        {
+            get
+            {
+                return this.currentArchiveName;
+            }
+        }
+
+        /// <summary>
+        /// Gets the current archive number, when processing a chained set of archives. Valid for all message types.
+        /// </summary>
+        /// <value>The number of the current archive.</value>
+        /// <remarks>The first archive is number 0, and the last archive is
+        /// <see cref="TotalArchives"/>-1.</remarks>
+        public int CurrentArchiveNumber
+        {
+            get
+            {
+                return this.currentArchiveNumber;
+            }
+        }
+
+        /// <summary>
+        /// Gets the total number of known archives in a chained set. Valid for all message types.
+        /// </summary>
+        /// <value>The total number of known archives in a chained set.</value>
+        /// <remarks>
+        /// When using the compression option to auto-split into multiple archives based on data size,
+        /// this value will not be accurate until the end.
+        /// </remarks>
+        public int TotalArchives
+        {
+            get
+            {
+                return this.totalArchives;
+            }
+        }
+
+        /// <summary>
+        /// Gets the number of compressed bytes processed so far during extraction
+        /// of the current archive. Valid for all extraction messages.
+        /// </summary>
+        /// <value>The number of compressed bytes processed so far during extraction
+        /// of the current archive.</value>
+        public long CurrentArchiveBytesProcessed
+        {
+            get
+            {
+                return this.currentArchiveBytesProcessed;
+            }
+        }
+
+        /// <summary>
+        /// Gets the total number of compressed bytes to be processed during extraction
+        /// of the current archive. Valid for all extraction messages.
+        /// </summary>
+        /// <value>The total number of compressed bytes to be processed during extraction
+        /// of the current archive.</value>
+        public long CurrentArchiveTotalBytes
+        {
+            get
+            {
+                return this.currentArchiveTotalBytes;
+            }
+        }
+
+        /// <summary>
+        /// Gets the number of uncompressed bytes processed so far among all files. Valid for all message types.  
+        /// </summary>
+        /// <value>The number of uncompressed file bytes processed so far among all files.</value>
+        /// <remarks>
+        /// When compared to <see cref="TotalFileBytes"/>, this can be used as a measure of overall progress.
+        /// </remarks>
+        public long FileBytesProcessed
+        {
+            get
+            {
+                return this.fileBytesProcessed;
+            }
+        }
+
+        /// <summary>
+        /// Gets the total number of uncompressed file bytes to be processed.  Valid for all message types.
+        /// </summary>
+        /// <value>The total number of uncompressed bytes to be processed among all files.</value>
+        public long TotalFileBytes
+        {
+            get
+            {
+                return this.totalFileBytes;
+            }
+        }
+
+#if DEBUG
+
+    /// <summary>
+    /// Creates a string representation of the progress event.
+    /// </summary>
+    /// <returns>a listing of all event parameters and values</returns>
+    public override string ToString()
+    {
+        string formatString =
+            "{0}\n" +
+            "\t CurrentFileName              = {1}\n" +
+            "\t CurrentFileNumber            = {2}\n" +
+            "\t TotalFiles                   = {3}\n" +
+            "\t CurrentFileBytesProcessed    = {4}\n" +
+            "\t CurrentFileTotalBytes        = {5}\n" +
+            "\t CurrentArchiveName           = {6}\n" +
+            "\t CurrentArchiveNumber         = {7}\n" +
+            "\t TotalArchives                = {8}\n" +
+            "\t CurrentArchiveBytesProcessed = {9}\n" +
+            "\t CurrentArchiveTotalBytes     = {10}\n" +
+            "\t FileBytesProcessed           = {11}\n" +
+            "\t TotalFileBytes               = {12}\n";
+        return String.Format(
+            System.Globalization.CultureInfo.InvariantCulture,
+            formatString,
+            this.ProgressType,
+            this.CurrentFileName,
+            this.CurrentFileNumber,
+            this.TotalFiles,
+            this.CurrentFileBytesProcessed,
+            this.CurrentFileTotalBytes,
+            this.CurrentArchiveName,
+            this.CurrentArchiveNumber,
+            this.TotalArchives,
+            this.CurrentArchiveBytesProcessed,
+            this.CurrentArchiveTotalBytes,
+            this.FileBytesProcessed,
+            this.TotalFileBytes);
+    }
+
+#endif
+    }
+}