public static bool TryReadParent(Stream stream, out GitObjectId parent)
{
// Format: "parent ef079ebcca375f6fd54aa0cb9f35e3ecc2bb66e7\n"
parent = GitObjectId.Empty;
Span <byte> line = stackalloc byte[ParentLineLength];
if (stream.Read(line) != ParentLineLength)
{
return(false);
}
if (!line.Slice(0, ParentStart.Length).SequenceEqual(ParentStart))
{
return(false);
}
if (line[ParentLineLength - 1] != (byte)'\n')
{
return(false);
}
parent = GitObjectId.ParseHex(line.Slice(ParentStart.Length, 40));
return(true);
}
public GitObjectId ResolveReference(string reference)
{
using (var stream = File.OpenRead(Path.Combine(this.GitDirectory, reference)))
{
Span <byte> objectId = stackalloc byte[40];
stream.Read(objectId);
return(GitObjectId.ParseHex(objectId));
}
}
public static GitObjectId ReadTree(Stream stream)
{
// Format: tree d8329fc1cc938780ffdd9f94e0d364e0ea74f579\n
// 47 bytes:
// tree: 5 bytes
// space: 1 byte
// hash: 40 bytes
// \n: 1 byte
Span <byte> line = stackalloc byte[TreeLineLength];
stream.Read(line);
Debug.Assert(line.Slice(0, TreeStart.Length).SequenceEqual(TreeStart));
Debug.Assert(line[TreeLineLength - 1] == (byte)'\n');
return(GitObjectId.ParseHex(line.Slice(TreeStart.Length, 40)));
}