internal static float ReadVarSingle(BinaryReader reader)
{
var input = reader.ReadByte();
var buff = SharedArray.Get();
var embedded = (input & FlagEmbedded) == FlagEmbedded;
if (embedded)
{
SharedArray.ClearArray4();
// last byte
buff[3] = (byte)(input & MaskEmbedded);
return(BitConverter.ToSingle(buff, 0));
}
int length = input;
if (length < 4)
{
SharedArray.ClearArray4();
}
reader.Read(buff, 4 - length, length);
return(BitConverter.ToSingle(buff, 0));
}
internal static double ReadVarDouble(BinaryReader reader)
{
var input = reader.ReadByte();
var buff = SharedArray.Get();
var embedded = (input & FlagEmbedded) == FlagEmbedded;
if (embedded)
{
SharedArray.ClearArray8();
// last byte
buff[7] = (byte)(input & MaskEmbedded);
return(BitConverter.ToDouble(buff, 0));
}
int length = input;
if (length < 8)
{
SharedArray.ClearArray8();
}
reader.Read(buff, 8 - length, length);
return(BitConverter.ToDouble(buff, 0));
}
//private static byte[] ConvertToVarBinary(long value, out byte length)
//{
// var buff = SharedArray.Get();
// buff[0] = (byte)value;
// buff[1] = unchecked((byte)(value >> 8));
// buff[2] = unchecked((byte)(value >> 16));
// buff[3] = unchecked((byte)(value >> 24));
// buff[4] = unchecked((byte)(value >> 32));
// buff[5] = unchecked((byte)(value >> 40));
// buff[6] = unchecked((byte)(value >> 48));
// buff[7] = unchecked((byte)(value >> 56));
// for (int i = 8 - 1; i >= 0; i--)
// {
// if (buff[i] > 0)
// {
// length = (byte)(i + 1);
// //if (length != 8)
// // Array.Resize(ref buff, length);
// return buff;
// }
// }
// length = 1;
// return new byte[] { 0 };
//}
private static byte[] ConvertToVarBinary(ulong value, out byte length)
{
var buff = SharedArray.Get();
buff[0] = (byte)value;
buff[1] = unchecked ((byte)(value >> 8));
buff[2] = unchecked ((byte)(value >> 16));
buff[3] = unchecked ((byte)(value >> 24));
buff[4] = unchecked ((byte)(value >> 32));
buff[5] = unchecked ((byte)(value >> 40));
buff[6] = unchecked ((byte)(value >> 48));
buff[7] = unchecked ((byte)(value >> 56));
for (int i = 8 - 1; i >= 0; i--)
{
if (buff[i] > 0)
{
length = (byte)(i + 1);
return(buff);
}
}
length = 1;
return(new byte[] { 0 });
}
private static byte[] ConvertToVarBinary(int value, out byte length)
{
if (value < 0)
{
length = 4;
var buff = SharedArray.Get();
buff[0] = (byte)value;
buff[1] = unchecked ((byte)(value >> 8));
buff[2] = unchecked ((byte)(value >> 16));
buff[3] = unchecked ((byte)(value >> 24));
return(buff);
}
else
{
var buff = SharedArray.Get();
SharedArray.ClearArray4();
var num1 = (byte)value;
var num2 = unchecked ((byte)(value >> 8));
var num3 = unchecked ((byte)(value >> 16));
var num4 = unchecked ((byte)(value >> 24));
buff[0] = num1;
if (num2 > 0)
{
buff[1] = num2;
}
else if (num3 == 0 && num4 == 0)
{
length = 1;
return(buff);
}
if (num3 > 0)
{
buff[2] = num3;
}
else if (num4 == 0)
{
length = 2;
return(buff);
}
if (num4 > 0)
{
buff[3] = num4;
}
else
{
length = 3;
return(buff);
}
length = 4;
return(buff);
}
}
private static byte[] ConvertToVarBinaryZigzag(int value, out byte length)
{
var buff = SharedArray.Get();
length = 0;
var zigZagEncoded = unchecked ((uint)((value << 1) ^ (value >> 31)));
while ((zigZagEncoded & ~0x7F) != 0)
{
buff[length++] = (byte)((zigZagEncoded | 0x80) & 0xFF);
zigZagEncoded >>= 7;
}
buff[length++] = (byte)zigZagEncoded;
return(buff);
}
private static byte[] ConvertToVarBinary(decimal value, out byte length)
{
var bits = decimal.GetBits(value);
var bitsArray = SharedArray.Get();
for (byte i = 0; i < bits.Length; i++)
{
var bytes = BitConverter.GetBytes(bits[i]);
Array.Copy(bytes, 0, bitsArray, i * 4, 4);
}
// finding the empty characters
for (int i = bitsArray.Length - 1; i >= 0; i--)
{
if (bitsArray[i] > 0)
{
length = (byte)(i + 1);
return(bitsArray);
}
}
length = 1;
return(new byte[] { 0 });
}
