/// <inheritdoc />
public override int ReadPrefix(string shortSha, out LibGit2Sharp.ObjectId oid, out UnmanagedMemoryStream data, out ObjectType objectType)
{
var lastItem = _lastItem; // Thread safety
if (lastItem?.Sha.StartsWith(shortSha, StringComparison.OrdinalIgnoreCase) ?? false)
{
oid = new LibGit2Sharp.ObjectId(lastItem.Sha);
data = AllocateAndBuildFrom(lastItem.Data);
objectType = lastItem.ObjectType;
return((int)ReturnCode.GIT_OK);
}
var entries = _database.FileStorage.Find(shortSha).ToList();
if (entries.Count == 1)
{
ExtractData(entries[0], out oid, out data, out objectType);
return((int)ReturnCode.GIT_OK);
}
else
{
oid = default;
data = default;
objectType = default;
return((int)(entries.Count == 0 ? ReturnCode.GIT_ENOTFOUND : ReturnCode.GIT_EAMBIGUOUS));
}
}
private static void ExtractData(LiteFileInfo file, out LibGit2Sharp.ObjectId oid, out int length, out ObjectType objectType)
{
using (var reader = new BinaryReader(file.OpenRead()))
{
oid = new LibGit2Sharp.ObjectId(reader.ReadString());
objectType = (ObjectType)reader.ReadInt32();
length = reader.ReadInt32();
}
}
private static void WriteData(LibGit2Sharp.ObjectId id, ObjectType objectType, byte[] data, LiteFileStream stream)
{
using (var writer = new BinaryWriter(stream, Encoding.Default, leaveOpen: true))
{
writer.Write(id.Sha);
writer.Write((int)objectType);
writer.Write(data.Length);
writer.Write(data);
}
}
/// <inheritdoc />
public override int Write(LibGit2Sharp.ObjectId id, Stream dataStream, long length, ObjectType objectType)
{
var data = (byte[])Array.CreateInstance(typeof(byte), length);
dataStream.Read(data, 0, (int)length);
using (var stream = _database.FileStorage.OpenWrite(id.Sha, null))
{
WriteData(id, objectType, data, stream);
_lastItem = new StoreItem(id.Sha, objectType, data);
}
return((int)ReturnCode.GIT_OK);
}
private void ExtractData(LiteFileInfo file, out LibGit2Sharp.ObjectId oid, out UnmanagedMemoryStream data, out ObjectType objectType)
{
using (var reader = new BinaryReader(file.OpenRead()))
{
oid = new LibGit2Sharp.ObjectId(reader.ReadString());
objectType = (ObjectType)reader.ReadInt32();
var length = reader.ReadInt32();
var bytes = reader.ReadBytes(length);
data = AllocateAndBuildFrom(bytes);
// Update last item
_lastItem = new StoreItem(oid.Sha, objectType, bytes);
}
}
/// <inheritdoc />
public override int ReadStream(LibGit2Sharp.ObjectId id, out OdbBackendStream stream)
{
var lastItem = _lastItem; // Thread safety
if (lastItem?.Sha.Equals(id.Sha, StringComparison.OrdinalIgnoreCase) ?? false)
{
stream = new LiteDbOdbBackendStream(this, new MemoryStream(lastItem.Data));
return((int)ReturnCode.GIT_OK);
}
var entry = _database.FileStorage.FindById(id.Sha);
if (entry != null)
{
stream = new LiteDbOdbBackendStream(this, entry.OpenRead());
return((int)ReturnCode.GIT_OK);
}
else
{
stream = default;
return((int)ReturnCode.GIT_ENOTFOUND);
}
}
/// <inheritdoc />
public override int ExistsPrefix(string shortSha, out LibGit2Sharp.ObjectId found)
{
var lastItem = _lastItem; // Thread safety
if (lastItem?.Sha.StartsWith(shortSha, StringComparison.OrdinalIgnoreCase) ?? false)
{
found = new LibGit2Sharp.ObjectId(lastItem.Sha);
return((int)ReturnCode.GIT_OK);
}
var entries = _database.FileStorage.Find(shortSha).ToList();
if (entries.Count == 1)
{
ExtractData(entries[0], out found, out int _, out var __);
return((int)ReturnCode.GIT_OK);
}
else
{
found = default;
return((int)(entries.Count == 0 ? ReturnCode.GIT_ENOTFOUND : ReturnCode.GIT_EAMBIGUOUS));
}
}
/// <inheritdoc />
public override int Read(LibGit2Sharp.ObjectId id, out UnmanagedMemoryStream data, out ObjectType objectType)
{
var lastItem = _lastItem; // Thread safety
if (lastItem?.Sha.Equals(id.Sha, StringComparison.OrdinalIgnoreCase) ?? false)
{
data = AllocateAndBuildFrom(lastItem.Data);
objectType = lastItem.ObjectType;
return((int)ReturnCode.GIT_OK);
}
var entry = _database.FileStorage.FindById(id.Sha);
if (entry != null)
{
ExtractData(entry, out var _, out data, out objectType);
return((int)ReturnCode.GIT_OK);
}
else
{
data = default;
objectType = default;
return((int)ReturnCode.GIT_ENOTFOUND);
}
}
/// <inheritdoc />
public override int ReadHeader(LibGit2Sharp.ObjectId id, out int length, out ObjectType objectType)
{
var lastItem = _lastItem; // Thread safety
if (lastItem?.Sha.Equals(id.Sha, StringComparison.OrdinalIgnoreCase) ?? false)
{
length = lastItem.Data.Length;
objectType = lastItem.ObjectType;
return((int)ReturnCode.GIT_OK);
}
var entry = _database.FileStorage.FindById(id.Sha);
if (entry != null)
{
ExtractData(entry, out var _, out length, out objectType);
return((int)ReturnCode.GIT_OK);
}
else
{
length = default;
objectType = default;
return((int)ReturnCode.GIT_ENOTFOUND);
}
}
public void SetRepositoryData(GitObjectDb.Git.RepositoryDescription repositoryDescription, LibGit2Sharp.ObjectId commitId)
{
RepositoryDescription = repositoryDescription ?? throw new ArgumentNullException(nameof(repositoryDescription));
CommitId = commitId ?? throw new ArgumentNullException(nameof(commitId));
}
public override int FinalizeWrite(LibGit2Sharp.ObjectId id)
{
_stream.Seek(0L, SeekOrigin.Begin);
return(Backend.Write(id, _stream, _length, _objectType));
}
/// <inheritdoc /> public override bool Exists(LibGit2Sharp.ObjectId id) => (_lastItem?.Sha.Equals(id.Sha, StringComparison.OrdinalIgnoreCase) ?? false) || _database.FileStorage.Exists(id.Sha);
internal Stash(Repository repo, ObjectId targetId, int index)
: base(repo, new DirectReference(string.Format("stash@{{{0}}}", index), repo, targetId), r => r.CanonicalName)
{
}
/// <summary>
/// Retrieves the header of a GitObject from the object database. The header contains the Size
/// and Type of the object. Note that most backends do not support reading only the header
/// of an object, so the whole object will be read and then size would be returned.
/// </summary>
/// <param name="objectId">Object Id of the queried object</param>
/// <returns>GitObjectMetadata object instance containg object header information</returns>
public virtual GitObjectMetadata RetrieveObjectMetadata(ObjectId objectId)
{
Ensure.ArgumentNotNull(objectId, "objectId");
return(Proxy.git_odb_read_header(handle, objectId));
}
/// <summary>
/// Determines if the given object can be found in the object database.
/// </summary>
/// <param name="objectId">Identifier of the object being searched for.</param>
/// <returns>True if the object has been found; false otherwise.</returns>
public virtual bool Contains(ObjectId objectId)
{
Ensure.ArgumentNotNull(objectId, "objectId");
return(Proxy.git_odb_exists(handle, objectId));
}
internal TagAnnotation(ObjectId id)
: base(id)
{
}