Exemple #1
0
        /// <summary>Generate and write the bundle to the output stream.</summary>
        /// <remarks>
        /// Generate and write the bundle to the output stream.
        /// <p>
        /// This method can only be called once per BundleWriter instance.
        /// </remarks>
        /// <param name="monitor">progress monitor to report bundle writing status to.</param>
        /// <param name="os">
        /// the stream the bundle is written to. The stream should be
        /// buffered by the caller. The caller is responsible for closing
        /// the stream.
        /// </param>
        /// <exception cref="System.IO.IOException">
        /// an error occurred reading a local object's data to include in
        /// the bundle, or writing compressed object data to the output
        /// stream.
        /// </exception>
        public virtual void WriteBundle(ProgressMonitor monitor, OutputStream os)
        {
            PackConfig pc = packConfig;

            if (pc == null)
            {
                pc = new PackConfig(db);
            }
            PackWriter packWriter = new PackWriter(pc, db.NewObjectReader());

            try
            {
                HashSet <ObjectId> inc = new HashSet <ObjectId>();
                HashSet <ObjectId> exc = new HashSet <ObjectId>();
                Sharpen.Collections.AddAll(inc, include.Values);
                foreach (RevCommit r in assume)
                {
                    exc.AddItem(r.Id);
                }
                packWriter.SetDeltaBaseAsOffset(true);
                packWriter.SetThin(exc.Count > 0);
                packWriter.SetReuseValidatingObjects(false);
                if (exc.Count == 0)
                {
                    packWriter.SetTagTargets(tagTargets);
                }
                packWriter.PreparePack(monitor, inc, exc);
                TextWriter w = new OutputStreamWriter(os, Constants.CHARSET);
                w.Write(NGit.Transport.TransportBundleConstants.V2_BUNDLE_SIGNATURE);
                w.Write('\n');
                char[] tmp = new char[Constants.OBJECT_ID_STRING_LENGTH];
                foreach (RevCommit a in assume)
                {
                    w.Write('-');
                    a.CopyTo(tmp, w);
                    if (a.RawBuffer != null)
                    {
                        w.Write(' ');
                        w.Write(a.GetShortMessage());
                    }
                    w.Write('\n');
                }
                foreach (KeyValuePair <string, ObjectId> e in include.EntrySet())
                {
                    e.Value.CopyTo(tmp, w);
                    w.Write(' ');
                    w.Write(e.Key);
                    w.Write('\n');
                }
                w.Write('\n');
                w.Flush();
                packWriter.WritePack(monitor, monitor, os);
            }
            finally
            {
                packWriter.Release();
            }
        }
Exemple #2
0
		/// <summary>Generate and write the bundle to the output stream.</summary>
		/// <remarks>
		/// Generate and write the bundle to the output stream.
		/// <p>
		/// This method can only be called once per BundleWriter instance.
		/// </remarks>
		/// <param name="monitor">progress monitor to report bundle writing status to.</param>
		/// <param name="os">
		/// the stream the bundle is written to. The stream should be
		/// buffered by the caller. The caller is responsible for closing
		/// the stream.
		/// </param>
		/// <exception cref="System.IO.IOException">
		/// an error occurred reading a local object's data to include in
		/// the bundle, or writing compressed object data to the output
		/// stream.
		/// </exception>
		public virtual void WriteBundle(ProgressMonitor monitor, OutputStream os)
		{
			PackConfig pc = packConfig;
			if (pc == null)
			{
				pc = new PackConfig(db);
			}
			PackWriter packWriter = new PackWriter(pc, db.NewObjectReader());
			try
			{
				HashSet<ObjectId> inc = new HashSet<ObjectId>();
				HashSet<ObjectId> exc = new HashSet<ObjectId>();
				Sharpen.Collections.AddAll(inc, include.Values);
				foreach (RevCommit r in assume)
				{
					exc.AddItem(r.Id);
				}
				packWriter.SetDeltaBaseAsOffset(true);
				packWriter.SetThin(exc.Count > 0);
				packWriter.SetReuseValidatingObjects(false);
				if (exc.Count == 0)
				{
					packWriter.SetTagTargets(tagTargets);
				}
				packWriter.PreparePack(monitor, inc, exc);
				TextWriter w = new OutputStreamWriter(os, Constants.CHARSET);
				w.Write(NGit.Transport.TransportBundleConstants.V2_BUNDLE_SIGNATURE);
				w.Write('\n');
				char[] tmp = new char[Constants.OBJECT_ID_STRING_LENGTH];
				foreach (RevCommit a in assume)
				{
					w.Write('-');
					a.CopyTo(tmp, w);
					if (a.RawBuffer != null)
					{
						w.Write(' ');
						w.Write(a.GetShortMessage());
					}
					w.Write('\n');
				}
				foreach (KeyValuePair<string, ObjectId> e in include.EntrySet())
				{
					e.Value.CopyTo(tmp, w);
					w.Write(' ');
					w.Write(e.Key);
					w.Write('\n');
				}
				w.Write('\n');
				w.Flush();
				packWriter.WritePack(monitor, monitor, os);
			}
			finally
			{
				packWriter.Release();
			}
		}
Exemple #3
0
		/// <exception cref="System.IO.IOException"></exception>
		private void SendPack(bool sideband)
		{
			ProgressMonitor pm = NullProgressMonitor.INSTANCE;
			OutputStream packOut = rawOut;
			SideBandOutputStream msgOut = null;
			if (sideband)
			{
				int bufsz = SideBandOutputStream.SMALL_BUF;
				if (options.Contains(OPTION_SIDE_BAND_64K))
				{
					bufsz = SideBandOutputStream.MAX_BUF;
				}
				packOut = new SideBandOutputStream(SideBandOutputStream.CH_DATA, bufsz, rawOut);
				if (!options.Contains(OPTION_NO_PROGRESS))
				{
					msgOut = new SideBandOutputStream(SideBandOutputStream.CH_PROGRESS, bufsz, rawOut
						);
					pm = new SideBandProgressMonitor(msgOut);
				}
			}
			try
			{
				if (wantAll.IsEmpty())
				{
					preUploadHook.OnSendPack(this, wantIds, commonBase);
				}
				else
				{
					preUploadHook.OnSendPack(this, wantAll, commonBase);
				}
			}
			catch (ServiceMayNotContinueException noPack)
			{
				if (sideband && noPack.Message != null)
				{
					noPack.SetOutput();
					SideBandOutputStream err = new SideBandOutputStream(SideBandOutputStream.CH_ERROR
						, SideBandOutputStream.SMALL_BUF, rawOut);
					err.Write(Constants.Encode(noPack.Message));
					err.Flush();
				}
				throw;
			}
			PackConfig cfg = packConfig;
			if (cfg == null)
			{
				cfg = new PackConfig(db);
			}
			PackWriter pw = new PackWriter(cfg, walk.GetObjectReader());
			try
			{
				pw.SetUseCachedPacks(true);
				pw.SetReuseDeltaCommits(true);
				pw.SetDeltaBaseAsOffset(options.Contains(OPTION_OFS_DELTA));
				pw.SetThin(options.Contains(OPTION_THIN_PACK));
				pw.SetReuseValidatingObjects(false);
				if (commonBase.IsEmpty() && refs != null)
				{
					ICollection<ObjectId> tagTargets = new HashSet<ObjectId>();
					foreach (Ref @ref in refs.Values)
					{
						if (@ref.GetPeeledObjectId() != null)
						{
							tagTargets.AddItem(@ref.GetPeeledObjectId());
						}
						else
						{
							if (@ref.GetObjectId() == null)
							{
								continue;
							}
							else
							{
								if (@ref.GetName().StartsWith(Constants.R_HEADS))
								{
									tagTargets.AddItem(@ref.GetObjectId());
								}
							}
						}
					}
					pw.SetTagTargets(tagTargets);
				}
				if (depth > 0)
				{
					pw.SetShallowPack(depth, unshallowCommits);
				}
				RevWalk rw = walk;
				if (wantAll.IsEmpty())
				{
					pw.PreparePack(pm, wantIds, commonBase);
				}
				else
				{
					walk.Reset();
					ObjectWalk ow = walk.ToObjectWalkWithSameObjects();
					pw.PreparePack(pm, ow, wantAll, commonBase);
					rw = ow;
				}
				if (options.Contains(OPTION_INCLUDE_TAG) && refs != null)
				{
					foreach (Ref vref in refs.Values)
					{
						Ref @ref = vref;
						ObjectId objectId = @ref.GetObjectId();
						// If the object was already requested, skip it.
						if (wantAll.IsEmpty())
						{
							if (wantIds.Contains(objectId))
							{
								continue;
							}
						}
						else
						{
							RevObject obj = rw.LookupOrNull(objectId);
							if (obj != null && obj.Has(WANT))
							{
								continue;
							}
						}
						if ([email protected]())
						{
							@ref = db.Peel(@ref);
						}
						ObjectId peeledId = @ref.GetPeeledObjectId();
						if (peeledId == null)
						{
							continue;
						}
						objectId = @ref.GetObjectId();
						if (pw.WillInclude(peeledId) && !pw.WillInclude(objectId))
						{
							pw.AddObject(rw.ParseAny(objectId));
						}
					}
				}
				pw.WritePack(pm, NullProgressMonitor.INSTANCE, packOut);
				statistics = pw.GetStatistics();
				if (msgOut != null)
				{
					string msg = pw.GetStatistics().GetMessage() + '\n';
					msgOut.Write(Constants.Encode(msg));
					msgOut.Flush();
				}
			}
			finally
			{
				pw.Release();
			}
			if (sideband)
			{
				pckOut.End();
			}
			if (statistics != null)
			{
				logger.OnPackStatistics(statistics);
			}
		}
Exemple #4
0
        /// <exception cref="System.IO.IOException"></exception>
        private void SendPack()
        {
            bool sideband = options.Contains(OPTION_SIDE_BAND) || options.Contains(OPTION_SIDE_BAND_64K
                                                                                   );
            ProgressMonitor      pm      = NullProgressMonitor.INSTANCE;
            OutputStream         packOut = rawOut;
            SideBandOutputStream msgOut  = null;

            if (sideband)
            {
                int bufsz = SideBandOutputStream.SMALL_BUF;
                if (options.Contains(OPTION_SIDE_BAND_64K))
                {
                    bufsz = SideBandOutputStream.MAX_BUF;
                }
                packOut = new SideBandOutputStream(SideBandOutputStream.CH_DATA, bufsz, rawOut);
                if (!options.Contains(OPTION_NO_PROGRESS))
                {
                    msgOut = new SideBandOutputStream(SideBandOutputStream.CH_PROGRESS, bufsz, rawOut
                                                      );
                    pm = new SideBandProgressMonitor(msgOut);
                }
            }
            PackConfig cfg = packConfig;

            if (cfg == null)
            {
                cfg = new PackConfig(db);
            }
            PackWriter pw = new PackWriter(cfg, walk.GetObjectReader());

            try
            {
                pw.SetUseCachedPacks(true);
                pw.SetReuseDeltaCommits(true);
                pw.SetDeltaBaseAsOffset(options.Contains(OPTION_OFS_DELTA));
                pw.SetThin(options.Contains(OPTION_THIN_PACK));
                pw.SetReuseValidatingObjects(false);
                if (commonBase.IsEmpty())
                {
                    ICollection <ObjectId> tagTargets = new HashSet <ObjectId>();
                    foreach (Ref @ref in refs.Values)
                    {
                        if (@ref.GetPeeledObjectId() != null)
                        {
                            tagTargets.AddItem(@ref.GetPeeledObjectId());
                        }
                        else
                        {
                            if (@ref.GetObjectId() == null)
                            {
                                continue;
                            }
                            else
                            {
                                if (@ref.GetName().StartsWith(Constants.R_HEADS))
                                {
                                    tagTargets.AddItem(@ref.GetObjectId());
                                }
                            }
                        }
                    }
                    pw.SetTagTargets(tagTargets);
                }
                RevWalk rw = walk;
                if (wantAll.IsEmpty())
                {
                    pw.PreparePack(pm, wantIds, commonBase);
                }
                else
                {
                    walk.Reset();
                    ObjectWalk ow = walk.ToObjectWalkWithSameObjects();
                    pw.PreparePack(pm, ow, wantAll, commonBase);
                    rw = ow;
                }
                if (options.Contains(OPTION_INCLUDE_TAG))
                {
                    foreach (Ref vref in refs.Values)
                    {
                        Ref      @ref     = vref;
                        ObjectId objectId = @ref.GetObjectId();
                        // If the object was already requested, skip it.
                        if (wantAll.IsEmpty())
                        {
                            if (wantIds.Contains(objectId))
                            {
                                continue;
                            }
                        }
                        else
                        {
                            RevObject obj = rw.LookupOrNull(objectId);
                            if (obj != null && obj.Has(WANT))
                            {
                                continue;
                            }
                        }
                        if ([email protected]())
                        {
                            @ref = db.Peel(@ref);
                        }
                        ObjectId peeledId = @ref.GetPeeledObjectId();
                        if (peeledId == null)
                        {
                            continue;
                        }
                        objectId = @ref.GetObjectId();
                        if (pw.WillInclude(peeledId) && !pw.WillInclude(objectId))
                        {
                            pw.AddObject(rw.ParseAny(objectId));
                        }
                    }
                }
                pw.WritePack(pm, NullProgressMonitor.INSTANCE, packOut);
                statistics = pw.GetStatistics();
                if (msgOut != null)
                {
                    string msg = pw.GetStatistics().GetMessage() + '\n';
                    msgOut.Write(Constants.Encode(msg));
                    msgOut.Flush();
                }
            }
            finally
            {
                pw.Release();
            }
            if (sideband)
            {
                pckOut.End();
            }
            if (logger != null && statistics != null)
            {
                logger.OnPackStatistics(statistics);
            }
        }
Exemple #5
0
        /// <exception cref="System.IO.IOException"></exception>
        private void SendPack()
        {
            bool sideband = options.Contains(OPTION_SIDE_BAND) || options.Contains(OPTION_SIDE_BAND_64K
                                                                                   );

            if (!biDirectionalPipe)
            {
                // Ensure the request was fully consumed. Any remaining input must
                // be a protocol error. If we aren't at EOF the implementation is broken.
                int eof = rawIn.Read();
                if (0 <= eof)
                {
                    throw new CorruptObjectException(MessageFormat.Format(JGitText.Get().expectedEOFReceived
                                                                          , "\\x" + Sharpen.Extensions.ToHexString(eof)));
                }
            }
            ProgressMonitor      pm      = NullProgressMonitor.INSTANCE;
            OutputStream         packOut = rawOut;
            SideBandOutputStream msgOut  = null;

            if (sideband)
            {
                int bufsz = SideBandOutputStream.SMALL_BUF;
                if (options.Contains(OPTION_SIDE_BAND_64K))
                {
                    bufsz = SideBandOutputStream.MAX_BUF;
                }
                packOut = new SideBandOutputStream(SideBandOutputStream.CH_DATA, bufsz, rawOut);
                if (!options.Contains(OPTION_NO_PROGRESS))
                {
                    msgOut = new SideBandOutputStream(SideBandOutputStream.CH_PROGRESS, bufsz, rawOut
                                                      );
                    pm = new SideBandProgressMonitor(msgOut);
                }
            }
            try
            {
                if (wantAll.IsEmpty())
                {
                    preUploadHook.OnSendPack(this, wantIds, commonBase);
                }
                else
                {
                    preUploadHook.OnSendPack(this, wantAll, commonBase);
                }
            }
            catch (UploadPackMayNotContinueException noPack)
            {
                if (sideband && noPack.Message != null)
                {
                    noPack.SetOutput();
                    SideBandOutputStream err = new SideBandOutputStream(SideBandOutputStream.CH_ERROR
                                                                        , SideBandOutputStream.SMALL_BUF, rawOut);
                    err.Write(Constants.Encode(noPack.Message));
                    err.Flush();
                }
                throw;
            }
            PackConfig cfg = packConfig;

            if (cfg == null)
            {
                cfg = new PackConfig(db);
            }
            PackWriter pw = new PackWriter(cfg, walk.GetObjectReader());

            try
            {
                pw.SetUseCachedPacks(true);
                pw.SetReuseDeltaCommits(true);
                pw.SetDeltaBaseAsOffset(options.Contains(OPTION_OFS_DELTA));
                pw.SetThin(options.Contains(OPTION_THIN_PACK));
                pw.SetReuseValidatingObjects(false);
                if (commonBase.IsEmpty())
                {
                    ICollection <ObjectId> tagTargets = new HashSet <ObjectId>();
                    foreach (Ref @ref in refs.Values)
                    {
                        if (@ref.GetPeeledObjectId() != null)
                        {
                            tagTargets.AddItem(@ref.GetPeeledObjectId());
                        }
                        else
                        {
                            if (@ref.GetObjectId() == null)
                            {
                                continue;
                            }
                            else
                            {
                                if (@ref.GetName().StartsWith(Constants.R_HEADS))
                                {
                                    tagTargets.AddItem(@ref.GetObjectId());
                                }
                            }
                        }
                    }
                    pw.SetTagTargets(tagTargets);
                }
                RevWalk rw = walk;
                if (wantAll.IsEmpty())
                {
                    pw.PreparePack(pm, wantIds, commonBase);
                }
                else
                {
                    walk.Reset();
                    ObjectWalk ow = walk.ToObjectWalkWithSameObjects();
                    pw.PreparePack(pm, ow, wantAll, commonBase);
                    rw = ow;
                }
                if (options.Contains(OPTION_INCLUDE_TAG))
                {
                    foreach (Ref vref in refs.Values)
                    {
                        Ref      @ref     = vref;
                        ObjectId objectId = @ref.GetObjectId();
                        // If the object was already requested, skip it.
                        if (wantAll.IsEmpty())
                        {
                            if (wantIds.Contains(objectId))
                            {
                                continue;
                            }
                        }
                        else
                        {
                            RevObject obj = rw.LookupOrNull(objectId);
                            if (obj != null && obj.Has(WANT))
                            {
                                continue;
                            }
                        }
                        if ([email protected]())
                        {
                            @ref = db.Peel(@ref);
                        }
                        ObjectId peeledId = @ref.GetPeeledObjectId();
                        if (peeledId == null)
                        {
                            continue;
                        }
                        objectId = @ref.GetObjectId();
                        if (pw.WillInclude(peeledId) && !pw.WillInclude(objectId))
                        {
                            pw.AddObject(rw.ParseAny(objectId));
                        }
                    }
                }
                pw.WritePack(pm, NullProgressMonitor.INSTANCE, packOut);
                statistics = pw.GetStatistics();
                if (msgOut != null)
                {
                    string msg = pw.GetStatistics().GetMessage() + '\n';
                    msgOut.Write(Constants.Encode(msg));
                    msgOut.Flush();
                }
            }
            finally
            {
                pw.Release();
            }
            if (sideband)
            {
                pckOut.End();
            }
            if (logger != null && statistics != null)
            {
                logger.OnPackStatistics(statistics);
            }
        }
Exemple #6
0
        /// <exception cref="System.IO.IOException"></exception>
        private PackFile WritePack <_T0, _T1>(ICollection <_T0> want, ICollection <_T1> have
                                              , ICollection <ObjectId> tagTargets, IList <PackIndex> excludeObjects) where _T0 : ObjectId
            where _T1 : ObjectId
        {
            FilePath   tmpPack = null;
            FilePath   tmpIdx  = null;
            PackWriter pw      = new PackWriter(repo);

            try
            {
                // prepare the PackWriter
                pw.SetDeltaBaseAsOffset(true);
                pw.SetReuseDeltaCommits(false);
                if (tagTargets != null)
                {
                    pw.SetTagTargets(tagTargets);
                }
                if (excludeObjects != null)
                {
                    foreach (PackIndex idx in excludeObjects)
                    {
                        pw.ExcludeObjects(idx);
                    }
                }
                pw.PreparePack(pm, want, have);
                if (pw.GetObjectCount() == 0)
                {
                    return(null);
                }
                // create temporary files
                string   id      = pw.ComputeName().GetName();
                FilePath packdir = new FilePath(repo.ObjectsDirectory, "pack");
                tmpPack = FilePath.CreateTempFile("gc_", ".pack_tmp", packdir);
                tmpIdx  = new FilePath(packdir, Sharpen.Runtime.Substring(tmpPack.GetName(), 0, tmpPack
                                                                          .GetName().LastIndexOf('.')) + ".idx_tmp");
                if (!tmpIdx.CreateNewFile())
                {
                    throw new IOException(MessageFormat.Format(JGitText.Get().cannotCreateIndexfile,
                                                               tmpIdx.GetPath()));
                }
                // write the packfile
                FileChannel  channel       = new FileOutputStream(tmpPack).GetChannel();
                OutputStream channelStream = Channels.NewOutputStream(channel);
                try
                {
                    pw.WritePack(pm, pm, channelStream);
                }
                finally
                {
                    channel.Force(true);
                    channelStream.Close();
                    channel.Close();
                }
                // write the packindex
                FileChannel  idxChannel = new FileOutputStream(tmpIdx).GetChannel();
                OutputStream idxStream  = Channels.NewOutputStream(idxChannel);
                try
                {
                    pw.WriteIndex(idxStream);
                }
                finally
                {
                    idxChannel.Force(true);
                    idxStream.Close();
                    idxChannel.Close();
                }
                // rename the temporary files to real files
                FilePath realPack = NameFor(id, ".pack");
                tmpPack.SetReadOnly();
                FilePath realIdx = NameFor(id, ".idx");
                realIdx.SetReadOnly();
                bool delete = true;
                try
                {
                    if (!tmpPack.RenameTo(realPack))
                    {
                        return(null);
                    }
                    delete = false;
                    if (!tmpIdx.RenameTo(realIdx))
                    {
                        FilePath newIdx = new FilePath(realIdx.GetParentFile(), realIdx.GetName() + ".new"
                                                       );
                        if (!tmpIdx.RenameTo(newIdx))
                        {
                            newIdx = tmpIdx;
                        }
                        throw new IOException(MessageFormat.Format(JGitText.Get().panicCantRenameIndexFile
                                                                   , newIdx, realIdx));
                    }
                }
                finally
                {
                    if (delete && tmpPack.Exists())
                    {
                        tmpPack.Delete();
                    }
                    if (delete && tmpIdx.Exists())
                    {
                        tmpIdx.Delete();
                    }
                }
                return(((ObjectDirectory)repo.ObjectDatabase).OpenPack(realPack, realIdx));
            }
            finally
            {
                pw.Release();
                if (tmpPack != null && tmpPack.Exists())
                {
                    tmpPack.Delete();
                }
                if (tmpIdx != null && tmpIdx.Exists())
                {
                    tmpIdx.Delete();
                }
            }
        }
Exemple #7
0
		/// <exception cref="System.IO.IOException"></exception>
		private void SendPack()
		{
			bool sideband = options.Contains(OPTION_SIDE_BAND) || options.Contains(OPTION_SIDE_BAND_64K
				);
			if (!biDirectionalPipe)
			{
				// Ensure the request was fully consumed. Any remaining input must
				// be a protocol error. If we aren't at EOF the implementation is broken.
				int eof = rawIn.Read();
				if (0 <= eof)
				{
					throw new CorruptObjectException(MessageFormat.Format(JGitText.Get().expectedEOFReceived
						, "\\x" + Sharpen.Extensions.ToHexString(eof)));
				}
			}
			ProgressMonitor pm = NullProgressMonitor.INSTANCE;
			OutputStream packOut = rawOut;
			SideBandOutputStream msgOut = null;
			if (sideband)
			{
				int bufsz = SideBandOutputStream.SMALL_BUF;
				if (options.Contains(OPTION_SIDE_BAND_64K))
				{
					bufsz = SideBandOutputStream.MAX_BUF;
				}
				packOut = new SideBandOutputStream(SideBandOutputStream.CH_DATA, bufsz, rawOut);
				if (!options.Contains(OPTION_NO_PROGRESS))
				{
					msgOut = new SideBandOutputStream(SideBandOutputStream.CH_PROGRESS, bufsz, rawOut
						);
					pm = new SideBandProgressMonitor(msgOut);
				}
			}
			try
			{
				if (wantAll.IsEmpty())
				{
					preUploadHook.OnSendPack(this, wantIds, commonBase);
				}
				else
				{
					preUploadHook.OnSendPack(this, wantAll, commonBase);
				}
			}
			catch (UploadPackMayNotContinueException noPack)
			{
				if (sideband && noPack.Message != null)
				{
					noPack.SetOutput();
					SideBandOutputStream err = new SideBandOutputStream(SideBandOutputStream.CH_ERROR
						, SideBandOutputStream.SMALL_BUF, rawOut);
					err.Write(Constants.Encode(noPack.Message));
					err.Flush();
				}
				throw;
			}
			PackConfig cfg = packConfig;
			if (cfg == null)
			{
				cfg = new PackConfig(db);
			}
			PackWriter pw = new PackWriter(cfg, walk.GetObjectReader());
			try
			{
				pw.SetUseCachedPacks(true);
				pw.SetReuseDeltaCommits(true);
				pw.SetDeltaBaseAsOffset(options.Contains(OPTION_OFS_DELTA));
				pw.SetThin(options.Contains(OPTION_THIN_PACK));
				pw.SetReuseValidatingObjects(false);
				if (commonBase.IsEmpty())
				{
					ICollection<ObjectId> tagTargets = new HashSet<ObjectId>();
					foreach (Ref @ref in refs.Values)
					{
						if (@ref.GetPeeledObjectId() != null)
						{
							tagTargets.AddItem(@ref.GetPeeledObjectId());
						}
						else
						{
							if (@ref.GetObjectId() == null)
							{
								continue;
							}
							else
							{
								if (@ref.GetName().StartsWith(Constants.R_HEADS))
								{
									tagTargets.AddItem(@ref.GetObjectId());
								}
							}
						}
					}
					pw.SetTagTargets(tagTargets);
				}
				RevWalk rw = walk;
				if (wantAll.IsEmpty())
				{
					pw.PreparePack(pm, wantIds, commonBase);
				}
				else
				{
					walk.Reset();
					ObjectWalk ow = walk.ToObjectWalkWithSameObjects();
					pw.PreparePack(pm, ow, wantAll, commonBase);
					rw = ow;
				}
				if (options.Contains(OPTION_INCLUDE_TAG))
				{
					foreach (Ref vref in refs.Values)
					{
						Ref @ref = vref;
						ObjectId objectId = @ref.GetObjectId();
						// If the object was already requested, skip it.
						if (wantAll.IsEmpty())
						{
							if (wantIds.Contains(objectId))
							{
								continue;
							}
						}
						else
						{
							RevObject obj = rw.LookupOrNull(objectId);
							if (obj != null && obj.Has(WANT))
							{
								continue;
							}
						}
						if ([email protected]())
						{
							@ref = db.Peel(@ref);
						}
						ObjectId peeledId = @ref.GetPeeledObjectId();
						if (peeledId == null)
						{
							continue;
						}
						objectId = @ref.GetObjectId();
						if (pw.WillInclude(peeledId) && !pw.WillInclude(objectId))
						{
							pw.AddObject(rw.ParseAny(objectId));
						}
					}
				}
				pw.WritePack(pm, NullProgressMonitor.INSTANCE, packOut);
				statistics = pw.GetStatistics();
				if (msgOut != null)
				{
					string msg = pw.GetStatistics().GetMessage() + '\n';
					msgOut.Write(Constants.Encode(msg));
					msgOut.Flush();
				}
			}
			finally
			{
				pw.Release();
			}
			if (sideband)
			{
				pckOut.End();
			}
			if (logger != null && statistics != null)
			{
				logger.OnPackStatistics(statistics);
			}
		}