private static ulong ReadRawVarInt64(ref MemorySpan span, int maxSize)
{
List <byte> bytes = new List <byte>();
ulong result = 0;
int j = 0;
int b0;
do
{
b0 = span.ReadByte();
bytes.Add((byte)b0);
if (b0 < 0)
{
throw new EndOfStreamException("Not enough bytes for VarInt");
}
result |= (ulong)(b0 & 0x7f) << j++ *7;
if (j > maxSize)
{
throw new OverflowException("VarInt too big");
}
} while ((b0 & 0x80) == 0x80);
byte[] byteArray = bytes.ToArray();
return(result);
}
public BinaryStream(byte[] buffer, bool reset = true)
{
this.buffer = new MemorySpan(buffer);
if (reset)
{
this.Reset();
}
}
private static void WriteRawVarInt64(ref MemorySpan span, ulong value)
{
while ((value & 0xFFFFFFFFFFFFFF80) != 0)
{
span.WriteByte((byte)((value & 0x7F) | 0x80));
value >>= 7;
}
span.WriteByte((byte)value);
}
private static void WriteRawVarInt32(ref MemorySpan span, uint value)
{
while ((value & -128) != 0)
{
span.WriteByte((byte)((value & 0x7F) | 0x80));
value >>= 7;
}
span.WriteByte((byte)value);
}
public static ushort ReadLShort(ref MemorySpan span)
{
byte[] bytes = span.ReadBytes(2);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
return(BitConverter.ToUInt16(bytes, 0));
}
public static void WriteUShort(ref MemorySpan span, ushort value)
{
byte[] bytes = BitConverter.GetBytes(value);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
span.WriteBytes(bytes);
}
public static void WriteString(ref MemorySpan span, string value)
{
byte[] buf = Encoding.UTF8.GetBytes(value);
if (string.IsNullOrEmpty(value))
{
WriteUVarInt(ref span, 0);
return;
}
WriteUVarInt(ref span, (uint)buf.Length);
WriteBytes(ref span, buf);
}
public static void WriteFixedString(ref MemorySpan span, string value)
{
if (string.IsNullOrEmpty(value))
{
WriteShort(ref span, 0);
return;
}
WriteShort(ref span, (short)value.Length);
WriteBytes(ref span, Encoding.UTF8.GetBytes(value));
}
public static void WriteLDouble(ref MemorySpan span, double value)
{
byte[] bytes = BitConverter.GetBytes(value);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
span.WriteBytes(bytes);
}
public static double ReadLDouble(ref MemorySpan span)
{
byte[] bytes = span.ReadBytes(8);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
return(BitConverter.ToDouble(bytes, 0));
}
public static float ReadLFloat(ref MemorySpan span)
{
byte[] bytes = span.ReadBytes(4);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
return(BitConverter.ToSingle(bytes, 0));
}
public static ulong ReadLLong(ref MemorySpan span)
{
byte[] bytes = span.ReadBytes(8);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
return(BitConverter.ToUInt64(bytes, 0));
}
public static uint ReadLInt(ref MemorySpan span)
{
byte[] bytes = span.ReadBytes(4);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
return(BitConverter.ToUInt32(bytes, 0));
}
public static string ReadString(ref MemorySpan span)
{
uint len = ReadUVarInt(ref span);
if (len == 0)
{
return("");
}
byte[] b = ReadBytes(ref span, (int)len);
return(Encoding.UTF8.GetString(b));
}
public static string ReadFixedString(ref MemorySpan span)
{
short len = ReadShort(ref span);
if (len <= 0)
{
return("");
}
byte[] b = ReadBytes(ref span, len);
return(Encoding.UTF8.GetString(b));
}
public static void WriteLTriad(ref MemorySpan span, int value)
{
if (value > Int24_Max)
{
throw new OverflowException("Not Int24 Value!");
}
byte[] bytes = new byte[3]
{
(byte)value,
((byte)(value >> 8)),
((byte)(value >> 16))
};
span.WriteBytes(bytes);
}
public static byte[][] SplitBytes(MemorySpan span, int length)
{
List <byte[]> splits = new List <byte[]>();
while (span.Offset < span.Length)
{
if ((span.Length - span.Offset) >= length)
{
splits.Add(span.ReadBytes(length));
}
else
{
splits.Add(span.ReadBytes());
}
}
return(splits.ToArray());
}
private static uint ReadRawVarInt32(ref MemorySpan span, int maxSize)
{
uint result = 0;
int j = 0;
int b0;
do
{
b0 = span.ReadByte();
if (b0 < 0)
{
throw new EndOfStreamException("Not enough bytes for VarInt");
}
result |= (uint)(b0 & 0x7f) << j++ *7;
if (j > maxSize)
{
throw new OverflowException("VarInt too big");
}
} while ((b0 & 0x80) == 0x80);
return(result);
}
public static void WriteSInt32(ref MemorySpan span, int value)
{
WriteRawVarInt32(ref span, EncodeZigZag32(value));
}
public static int ReadInt32(ref MemorySpan span)
{
return((int)ReadRawVarInt32(ref span, 5));
}
public static ulong ReadUInt64(ref MemorySpan span)
{
return(ReadRawVarInt64(ref span, 10));
}
public static long ReadSInt64(ref MemorySpan span)
{
return(DecodeZigZag64(ReadRawVarInt64(ref span, 10)));
}
public static void WriteUInt64(ref MemorySpan span, ulong value)
{
WriteRawVarInt64(ref span, value);
}
public static void WriteSInt64(ref MemorySpan span, long value)
{
WriteRawVarInt64(ref span, EncodeZigZag64(value));
}
public static long ReadInt64(ref MemorySpan span)
{
return((long)ReadRawVarInt64(ref span, 10));
}
public static void WriteInt64(ref MemorySpan span, long value)
{
WriteRawVarInt64(ref span, (ulong)value);
}
public static uint ReadUInt32(ref MemorySpan span)
{
return(ReadRawVarInt32(ref span, 5));
}
public static void WriteUInt32(ref MemorySpan span, uint value)
{
WriteRawVarInt32(ref span, value);
}
public void SetBuffer(byte[] buffer)
{
this.buffer = new MemorySpan(buffer);
this.Reset();
}
public static int ReadSInt32(ref MemorySpan span)
{
return(DecodeZigZag32(ReadRawVarInt32(ref span, 5)));
}
