* Start compressing archives

4 files changed, 30 insertions, 34 deletions

diff --git a/OpenSim/Region/Environment/Modules/World/Archiver/ArchiveReadRequest.cs b/OpenSim/Region/Environment/Modules/World/Archiver/ArchiveReadRequest.cs
index 0f179f4..0e37197 100644
--- a/OpenSim/Region/Environment/Modules/World/Archiver/ArchiveReadRequest.cs
+++ b/OpenSim/Region/Environment/Modules/World/Archiver/ArchiveReadRequest.cs
@@ -32,6 +32,7 @@ using OpenSim.Region.Environment.Modules.World.Terrain;
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.IO.Compression;
 using System.Reflection;
 using System.Xml;
 using libsecondlife;
@@ -60,8 +61,10 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
         }
 
         protected void DearchiveRegion()
-        {
-            TarArchiveReader archive = new TarArchiveReader(m_loadPath);
+        {            
+            TarArchiveReader archive 
+                = new TarArchiveReader(
+                    new GZipStream(new FileStream(m_loadPath, FileMode.Open), CompressionMode.Decompress));           
             //AssetsDearchiver dearchiver = new AssetsDearchiver(m_scene.AssetCache);
 
             List<string> serialisedSceneObjects = new List<string>();
diff --git a/OpenSim/Region/Environment/Modules/World/Archiver/ArchiveWriteRequestExecution.cs b/OpenSim/Region/Environment/Modules/World/Archiver/ArchiveWriteRequestExecution.cs
index f8c8b73..e980650 100644
--- a/OpenSim/Region/Environment/Modules/World/Archiver/ArchiveWriteRequestExecution.cs
+++ b/OpenSim/Region/Environment/Modules/World/Archiver/ArchiveWriteRequestExecution.cs
@@ -28,6 +28,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.IO.Compression;
 using System.Reflection;
 using System.Xml;
 using libsecondlife;
@@ -110,7 +111,7 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
             AssetsArchiver assetsArchiver = new AssetsArchiver(assets);
             assetsArchiver.Archive(archive);
 
-            archive.WriteTar(m_savePath);
+            archive.WriteTar(new GZipStream(new FileStream(m_savePath, FileMode.Create), CompressionMode.Compress));
 
             m_log.InfoFormat("[ARCHIVER]: Wrote out OpenSimulator archive {0}", m_savePath);
         }   
diff --git a/OpenSim/Region/Environment/Modules/World/Archiver/TarArchiveReader.cs b/OpenSim/Region/Environment/Modules/World/Archiver/TarArchiveReader.cs
index 463e172..67f27b8 100644
--- a/OpenSim/Region/Environment/Modules/World/Archiver/TarArchiveReader.cs
+++ b/OpenSim/Region/Environment/Modules/World/Archiver/TarArchiveReader.cs
@@ -52,23 +52,13 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
         /// </summary>
         protected char[] m_nullCharArray = new char[] { '\0' };
 
-        public TarArchiveReader(string archivePath)
-        {
-            m_br = new BinaryReader(new FileStream(archivePath, FileMode.Open));
-        }
-
         /// <summary>
-        /// Are we at the end of the archive?
+        /// Generate a tar reader which reads from the given stream.
         /// </summary>
-        /// <returns></returns>
-        public bool AtEof()
+        /// <param name="s"></param>
+        public TarArchiveReader(Stream s)
         {
-            // If we've reached the end of the archive we'll be in null block territory, which means
-            // the next byte will be 0
-            if (m_br.PeekChar() == 0)
-                return true;
-
-            return false;
+            m_br = new BinaryReader(s);
         }
 
         /// <summary>
@@ -79,11 +69,11 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
         public byte[] ReadEntry(out string filePath)
         {
             filePath = String.Empty;
-
-            if (AtEof())
-                return null;
-
+            
             TarHeader header = ReadHeader();
+            
+            if (null == header)
+                return null;
 
             filePath = header.FilePath;
             byte[] data = m_br.ReadBytes(header.FileSize);
@@ -105,14 +95,18 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
 
         /// <summary>
         /// Read the next 512 byte chunk of data as a tar header.
-        /// This method assumes we are not at the end of the archive
         /// </summary>
-        /// <returns>A tar header struct.</returns>
+        /// <returns>A tar header struct.  null if we have reached the end of the archive.</returns>
         protected TarHeader ReadHeader()
-        {
-            TarHeader tarHeader = new TarHeader();
-
+        {            
             byte[] header = m_br.ReadBytes(512);
+            
+            // If we've reached the end of the archive we'll be in null block territory, which means
+            // the next byte will be 0            
+            if (header[0] == 0)
+                return null;
+            
+            TarHeader tarHeader = new TarHeader();
 
             tarHeader.FilePath = m_asciiEncoding.GetString(header, 0, 100);
             tarHeader.FilePath = tarHeader.FilePath.Trim(m_nullCharArray);
@@ -147,7 +141,7 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
         }
     }
 
-    public struct TarHeader
+    public class TarHeader
     {
         public string FilePath;
         public int FileSize;
diff --git a/OpenSim/Region/Environment/Modules/World/Archiver/TarArchiveWriter.cs b/OpenSim/Region/Environment/Modules/World/Archiver/TarArchiveWriter.cs
index 1301eb3..afb0a91 100644
--- a/OpenSim/Region/Environment/Modules/World/Archiver/TarArchiveWriter.cs
+++ b/OpenSim/Region/Environment/Modules/World/Archiver/TarArchiveWriter.cs
@@ -79,21 +79,19 @@ namespace OpenSim.Region.Environment
         }
 
         /// <summary>
-        /// Write the raw tar archive data to a file
+        /// Write the raw tar archive data to a stream.  The stream will be closed on completion.
         /// </summary>
+        /// <param name="s">Stream to which to write the data</param>
         /// <returns></returns>
-        public void WriteTar(string archivePath)
+        public void WriteTar(Stream s)
         {
-            BinaryWriter bw = new BinaryWriter(new FileStream(archivePath, FileMode.Create));
+            BinaryWriter bw = new BinaryWriter(s);
 
             foreach (string filePath in m_files.Keys)
             {
                 byte[] header = new byte[512];
                 byte[] data = m_files[filePath];
 
-                //string filePath = "test.txt";
-                //byte[] data = m_asciiEncoding.GetBytes("hello\n");
-
                 // file path field (100)
                 byte[] nameBytes = m_asciiEncoding.GetBytes(filePath);
                 int nameSize = (nameBytes.Length >= 100) ? 100 : nameBytes.Length;
@@ -149,7 +147,6 @@ namespace OpenSim.Region.Environment
                 m_log.DebugFormat("[TAR ARCHIVE WRITER]: Decimal header checksum is {0}", checksum);
 
                 byte[] checkSumBytes = ConvertDecimalToPaddedOctalBytes(checksum, 6);
-                //byte[] checkSumBytes = m_asciiEncoding.GetBytes("007520");
 
                 Array.Copy(checkSumBytes, 0, header, 148, 6);
 
@@ -176,6 +173,7 @@ namespace OpenSim.Region.Environment
             byte[] finalZeroPadding = new byte[1024];
             bw.Write(finalZeroPadding);
 
+            bw.Flush();
             bw.Close();
         }