public override long FindCRC32(AnyObjectId objId)
{
int levelOne = objId.GetFirstByte();
int levelTwo = BinarySearchLevelTwo(objId, levelOne);
if (levelTwo == -1)
{
throw new MissingObjectException(objId.Copy(), ObjectType.Unknown);
}
return(NB.DecodeUInt32(_crc32[levelOne], levelTwo << 2));
}
public override long FindOffset(AnyObjectId objId)
{
int levelOne = objId.GetFirstByte();
int levelTwo = BinarySearchLevelTwo(objId, levelOne);
if (levelTwo == -1)
{
return(-1);
}
long p = NB.DecodeUInt32(_offset32[levelOne], levelTwo << 2);
if ((p & IS_O64) != 0)
{
return(NB.DecodeUInt64(_offset64, (8 * (int)(p & ~IS_O64))));
}
return(p);
}
public override long FindOffset(AnyObjectId objId)
{
int levelOne = objId.GetFirstByte();
byte[] data = _idxdata[levelOne];
if (data == null)
{
return(-1);
}
int high = data.Length / (4 + AnyObjectId.ObjectIdLength);
int low = 0;
do
{
int mid = (low + high) / 2;
int pos = ((4 + AnyObjectId.ObjectIdLength) * mid) + 4;
int cmp = objId.CompareTo(data, pos);
if (cmp < 0)
{
high = mid;
}
else if (cmp == 0)
{
uint b0 = data[pos - 4] & (uint)0xff;
uint b1 = data[pos - 3] & (uint)0xff;
uint b2 = data[pos - 2] & (uint)0xff;
uint b3 = data[pos - 1] & (uint)0xff;
return((((long)b0) << 24) | (b1 << 16) | (b2 << 8) | (b3));
}
else
{
low = mid + 1;
}
} while (low < high);
return(-1);
}