// max obj size
/// <exception cref="System.IO.IOException"></exception>
private void PackHeader(TemporaryBuffer.Heap tinyPack, int cnt)
{
byte[] hdr = new byte[8];
NB.EncodeInt32(hdr, 0, 2);
NB.EncodeInt32(hdr, 4, cnt);
tinyPack.Write(Constants.PACK_SIGNATURE);
tinyPack.Write(hdr, 0, 8);
}
/// <exception cref="System.IO.IOException"></exception>
private void Digest(TemporaryBuffer.Heap buf)
{
MessageDigest md = Constants.NewMessageDigest();
md.Update(buf.ToByteArray());
buf.Write(md.Digest());
}
/// <exception cref="System.IO.IOException"></exception>
private void ObjectHeader(TemporaryBuffer.Heap pack, int type, int sz)
{
byte[] buf = new byte[8];
int nextLength = (int)(((uint)sz) >> 4);
buf[0] = unchecked((byte)((nextLength > 0 ? unchecked((int)(0x80)) : unchecked((int
)(0x00))) | (type << 4) | (sz & unchecked((int)(0x0F)))));
sz = nextLength;
int n = 1;
while (sz > 0)
{
nextLength = (int)(((uint)nextLength) >> 7);
buf[n++] = unchecked((byte)((nextLength > 0 ? unchecked((int)(0x80)) : unchecked(
(int)(0x00))) | (sz & unchecked((int)(0x7F)))));
sz = nextLength;
}
pack.Write(buf, 0, n);
}
/// <exception cref="System.IO.IOException"></exception>
private void Deflate(TemporaryBuffer.Heap tinyPack, byte[] content)
{
Deflater deflater = new Deflater();
byte[] buf = new byte[128];
deflater.SetInput(content, 0, content.Length);
deflater.Finish();
do
{
int n = deflater.Deflate(buf, 0, buf.Length);
if (n > 0)
{
tinyPack.Write(buf, 0, n);
}
}
while (!deflater.IsFinished);
}
/// <exception cref="System.IO.IOException"></exception>
private void Copy(TemporaryBuffer.Heap tinyPack, ObjectLoader ldr)
{
byte[] buf = new byte[64];
byte[] content = ldr.GetCachedBytes();
int dataLength = content.Length;
int nextLength = (int)(((uint)dataLength) >> 4);
int size = 0;
buf[size++] = unchecked((byte)((nextLength > 0 ? unchecked((int)(0x80)) : unchecked(
(int)(0x00))) | (ldr.GetType() << 4) | (dataLength & unchecked((int)(0x0F)))));
dataLength = nextLength;
while (dataLength > 0)
{
nextLength = (int)(((uint)nextLength) >> 7);
buf[size++] = unchecked((byte)((nextLength > 0 ? unchecked((int)(0x80)) : unchecked(
(int)(0x00))) | (dataLength & unchecked((int)(0x7F)))));
dataLength = nextLength;
}
tinyPack.Write(buf, 0, size);
Deflate(tinyPack, content);
}
