/// <summary>
/// Construct an object writer for the specified repository.
/// </summary>
/// <param name="repo"> </param>
public ObjectWriter(Repository repo)
{
_r = repo;
_buf = new byte[0x2000];
_md = new MessageDigest();
_def = new Deflater(_r.Config.getCore().getCompression());
}
public WalkFetchConnection(IWalkTransport t, WalkRemoteObjectDatabase w)
{
_idBuffer = new MutableObjectId();
_objectDigest = Constants.newMessageDigest();
var wt = (Transport)t;
_local = wt.Local;
_objCheck = wt.CheckFetchedObjects ? new ObjectChecker() : null;
_remotes = new List<WalkRemoteObjectDatabase> { w };
_unfetchedPacks = new LinkedList<RemotePack>();
_packsConsidered = new List<string>();
_noPacksYet = new LinkedList<WalkRemoteObjectDatabase>();
_noPacksYet.AddFirst(w);
_noAlternatesYet = new LinkedList<WalkRemoteObjectDatabase>();
_noAlternatesYet.AddFirst(w);
_fetchErrors = new Dictionary<ObjectId, List<Exception>>();
_packLocks = new List<PackLock>(4);
_revWalk = new RevWalk.RevWalk(_local);
_treeWalk = new TreeWalk.TreeWalk(_local);
COMPLETE = _revWalk.newFlag("COMPLETE");
IN_WORK_QUEUE = _revWalk.newFlag("IN_WORK_QUEUE");
LOCALLY_SEEN = _revWalk.newFlag("LOCALLY_SEEN");
_localCommitQueue = new DateRevQueue();
_workQueue = new LinkedList<ObjectId>();
}
public ObjectWriter(Repository repo)
{
this.r = repo;
buf = new byte[8192];
md = new MessageDigest(); // [henon] Sha1 hash digest generator
def = new Deflater(r.Config.Core.Compression);
}
public DigestOutputStream(Stream stream, MessageDigest digest)
: base()
{
m_digest = digest;
m_stream = stream;
}
private void InitializeDigest()
{
if (_contentDigest != null) return;
if (Parent == null)
{
_contentReadBuffer = new byte[BufferSize];
_contentDigest = Constants.newMessageDigest();
}
else
{
var p = (WorkingTreeIterator)Parent;
p.InitializeDigest();
_contentReadBuffer = p._contentReadBuffer;
_contentDigest = p._contentDigest;
}
}
public PackOutputStream(Stream stream)
{
_crc = new Crc32();
_md = Constants.newMessageDigest();
_stream = stream;
}
public DirCacheEntry(byte[] sharedInfo, int infoAt, Stream @in, MessageDigest md)
{
info = sharedInfo;
infoOffset = infoAt;
NB.ReadFully(@in, info, infoOffset, INFO_LEN);
md.Update(info, infoOffset, INFO_LEN);
int pathLen = NB.decodeUInt16(info, infoOffset + P_FLAGS) & NAME_MASK;
int skipped = 0;
if (pathLen < NAME_MASK)
{
path = new byte[pathLen];
NB.ReadFully(@in, path, 0, pathLen);
md.Update(path, 0, pathLen);
}
else
{
var tmp = new BinaryWriter(new MemoryStream());
{
byte[] buf = new byte[NAME_MASK];
NB.ReadFully(@in, buf, 0, NAME_MASK);
tmp.Write(buf);
}
for (; ; )
{
int c = @in.ReadByte();
if (c < 0)
throw new EndOfStreamException("Short read of block.");
if (c == 0)
break;
tmp.Write(c);
}
path = (tmp.BaseStream as MemoryStream).ToArray();
pathLen = path.Length;
skipped = 1; // we already skipped 1 '\0' above to break the loop.
md.Update(path, 0, pathLen);
md.Update((byte)0);
}
// Index records are padded out to the next 8 byte alignment
// for historical reasons related to how C Git read the files.
//
int actLen = INFO_LEN + pathLen;
int expLen = (actLen + 8) & ~7;
int padLen = expLen - actLen - skipped;
if (padLen > 0)
{
NB.skipFully(@in, padLen);
md.Update(nullpad, 0, padLen);
}
}
public IndexPack(Repository db, Stream src, FileInfo dstBase)
{
_repo = db;
_stream = src;
_crc = new Crc32();
_inflater = InflaterCache.Instance.get();
_windowCursor = new WindowCursor();
_buffer = new byte[BUFFER_SIZE];
_objectData = new byte[BUFFER_SIZE];
_objectDigest = Constants.newMessageDigest();
_tempObjectId = new MutableObjectId();
_packDigest = Constants.newMessageDigest();
if (dstBase != null)
{
DirectoryInfo dir = dstBase.Directory;
string nam = dstBase.Name;
_dstPack = new FileInfo(Path.Combine(dir.ToString(), GetPackFileName(nam)));
_dstIdx = new FileInfo(Path.Combine(dir.ToString(), GetIndexFileName(nam)));
_packOut = _dstPack.Create();
}
else
{
_dstPack = null;
_dstIdx = null;
}
}
public void index(ProgressMonitor progress)
{
progress.Start(2 /* tasks */);
try
{
try
{
ReadPackHeader();
_entries = new PackedObjectInfo[(int)_objectCount];
_baseById = new ObjectIdSubclassMap<DeltaChain>();
_baseByPos = new Dictionary<long, UnresolvedDelta>();
progress.BeginTask(PROGRESS_DOWNLOAD, (int)_objectCount);
for (int done = 0; done < _objectCount; done++)
{
IndexOneObject();
progress.Update(1);
if (progress.IsCancelled)
{
throw new IOException("Download cancelled");
}
}
ReadPackFooter();
EndInput();
progress.EndTask();
if (_deltaCount > 0)
{
if (_packOut == null)
{
throw new IOException("need packOut");
}
ResolveDeltas(progress);
if (_entryCount < _objectCount)
{
if (!_fixThin)
{
throw new IOException("pack has " + (_objectCount - _entryCount) + " unresolved deltas");
}
FixThinPack(progress);
}
}
if (_packOut != null && (_keepEmpty || _entryCount > 0))
{
_packOut.Flush();
}
_packDigest = null;
_baseById = null;
_baseByPos = null;
if (_dstIdx != null && (_keepEmpty || _entryCount > 0))
{
WriteIdx();
}
}
finally
{
try
{
InflaterCache.Instance.release(_inflater);
}
finally
{
_inflater = null;
}
_windowCursor = WindowCursor.Release(_windowCursor);
progress.EndTask();
if (_packOut != null)
{
_packOut.Close();
}
}
if (_keepEmpty || _entryCount > 0)
{
if (_dstPack != null)
{
_dstPack.IsReadOnly = true;
}
if (_dstIdx != null)
{
_dstIdx.IsReadOnly = true;
}
}
}
catch (IOException)
{
if (_dstPack != null) _dstPack.Delete();
if (_dstIdx != null) _dstIdx.Delete();
throw;
}
}
private void initializeDigest()
{
if (contentDigest != null)
return;
if (parent == null)
{
contentReadBuffer = new byte[BUFFER_SIZE];
contentDigest = Constants.newMessageDigest();
}
else
{
WorkingTreeIterator p = (WorkingTreeIterator)parent;
p.initializeDigest();
contentReadBuffer = p.contentReadBuffer;
contentDigest = p.contentDigest;
}
}
public DirCacheEntry(byte[] sharedInfo, int infoAt, Stream @in, MessageDigest md)
{
_info = sharedInfo;
_infoOffset = infoAt;
NB.ReadFully(@in, _info, _infoOffset, INFO_LEN);
md.Update(_info, _infoOffset, INFO_LEN);
int pathLen = NB.decodeUInt16(_info, _infoOffset + PFlags) & NameMask;
int skipped = 0;
if (pathLen < NameMask)
{
_path = new byte[pathLen];
NB.ReadFully(@in, _path, 0, pathLen);
md.Update(_path, 0, pathLen);
}
else
{
var tmp = new MemoryStream();
{
var buf = new byte[NameMask];
NB.ReadFully(@in, buf, 0, NameMask);
tmp.Write(buf, 0, buf.Length);
}
while (true)
{
int c = @in.ReadByte();
if (c < 0)
{
throw new EndOfStreamException("Short Read of block.");
}
if (c == 0) break;
tmp.Write(new[] { (byte)c }, 0, 1);
}
_path = tmp.ToArray();
pathLen = _path.Length;
skipped = 1; // we already skipped 1 '\0' above to break the loop.
md.Update(_path, 0, pathLen);
md.Update(0);
}
// Index records are padded out to the next 8 byte alignment
// for historical reasons related to how C Git Read the files.
//
int actLen = INFO_LEN + pathLen;
int expLen = (actLen + 8) & ~7;
int padLen = expLen - actLen - skipped;
if (padLen > 0)
{
NB.skipFully(@in, padLen);
md.Update(NullPad, 0, padLen);
}
}
