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BytePacketWriter.cs
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BytePacketWriter.cs
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/*
Copyright (c) Luchunpen (bwolf88). All rights reserved.
Date: 17/01/2016 11:17
*/
using System;
using System.Text;
namespace Nano3
{
public class BytePacketWriter
{
private byte[] _items;
private int _ptr;
private int _bufferSize;
public BytePacketWriter()
{
_items = new byte[4];
_bufferSize = 4;
}
public BytePacketWriter(int size)
{
_items = new byte[size];
_bufferSize = size;
}
public byte[] GetPacket()
{
if (_ptr == _bufferSize) return _items;
else
{
byte[] b = new byte[_ptr];
Array.Copy(_items, b, _ptr);
return b;
}
}
public int CurrentPosition
{
get { return _ptr; }
set { _ptr = value < 0 ? 0 : value > _items.Length ? _items.Length : value; }
}
private void Resize(int addsize = 0)
{
if (addsize == 0)
{
byte[] newBuffer = new byte[_bufferSize * 2];
Array.Copy(_items, newBuffer, _bufferSize);
_items = newBuffer;
_bufferSize = _bufferSize * 2;
}
else
{
byte[] newBuffer = new byte[_bufferSize + addsize];
Array.Copy(_items, newBuffer, _bufferSize);
_items = newBuffer;
_bufferSize = _bufferSize + addsize;
}
}
public void Write(bool value)
{
if (_ptr + 1 >= _bufferSize) { Resize(1); }
if (value) _items[_ptr] = 1;
_ptr++;
}
public void Write(byte value)
{
if (_ptr + 1 >= _bufferSize) { Resize(1); }
_items[_ptr] = value;
_ptr++;
}
public void Write(sbyte value)
{
if (_ptr + 1 >= _bufferSize) { Resize(1); }
_items[_ptr] = (byte)value;
_ptr++;
}
public void Write(short value)
{
if (_ptr + 2 >= _bufferSize) { Resize(2); }
_items[_ptr++] = (byte)value;
_items[_ptr++] = (byte)(value >> 8);
}
public void Write(ushort value)
{
if (_ptr + 2 >= _bufferSize) { Resize(2); }
_items[_ptr++] = (byte)value;
_items[_ptr++] = (byte)(value >> 8);
}
public void Write(int value)
{
if (_ptr + 4 >= _bufferSize) { Resize(4); }
_items[_ptr++] = (byte)value;
_items[_ptr++] = (byte)(value >> 8);
_items[_ptr++] = (byte)(value >> 16);
_items[_ptr++] = (byte)(value >> 24);
}
public void Write(uint value)
{
if (_ptr + 4 >= _bufferSize) { Resize(4); }
_items[_ptr++] = (byte)value;
_items[_ptr++] = (byte)(value >> 8);
_items[_ptr++] = (byte)(value >> 16);
_items[_ptr++] = (byte)(value >> 24);
}
public void Write(long value)
{
if (_ptr + 8 >= _bufferSize) { Resize(8); }
_items[_ptr++] = (byte)value;
_items[_ptr++] = (byte)(value >> 8);
_items[_ptr++] = (byte)(value >> 16);
_items[_ptr++] = (byte)(value >> 24);
_items[_ptr++] = (byte)(value >> 32);
_items[_ptr++] = (byte)(value >> 40);
_items[_ptr++] = (byte)(value >> 48);
_items[_ptr++] = (byte)(value >> 56);
}
public void Write(ulong value)
{
if (_ptr + 8 >= _bufferSize) { Resize(8); }
_items[_ptr++] = (byte)value;
_items[_ptr++] = (byte)(value >> 8);
_items[_ptr++] = (byte)(value >> 16);
_items[_ptr++] = (byte)(value >> 24);
_items[_ptr++] = (byte)(value >> 32);
_items[_ptr++] = (byte)(value >> 40);
_items[_ptr++] = (byte)(value >> 48);
_items[_ptr++] = (byte)(value >> 56);
}
public void Write(float value)
{
if (_ptr + 4 >= _bufferSize) { Resize(4); }
FloatInt fi = new FloatInt(); fi.fvalue = value;
int val = fi.ivalue;
_items[_ptr++] = (byte)val;
_items[_ptr++] = (byte)(val >> 8);
_items[_ptr++] = (byte)(val >> 16);
_items[_ptr++] = (byte)(val >> 24);
}
public void Write(double value)
{
if (_ptr + 8 >= _bufferSize) { Resize(8); }
DoubleLong dl = new DoubleLong(); dl.dvalue = value;
long val = dl.lvalue;
_items[_ptr++] = (byte)val;
_items[_ptr++] = (byte)(val >> 8);
_items[_ptr++] = (byte)(val >> 16);
_items[_ptr++] = (byte)(val >> 24);
_items[_ptr++] = (byte)(val >> 32);
_items[_ptr++] = (byte)(val >> 40);
_items[_ptr++] = (byte)(val >> 48);
_items[_ptr++] = (byte)(val >> 56);
}
public void Write(string value)
{
if (!string.IsNullOrEmpty(value))
{
byte[] b = Encoding.UTF8.GetBytes(value);
int blenght = b.Length;
Write(blenght);
if (_ptr + blenght >= _bufferSize) { Resize(blenght); }
Buffer.BlockCopy(b, 0, _items, _ptr, blenght);
_ptr += blenght;
}
else { Write(0); }
}
public void Write(byte[] value)
{
if (value == null) return;
int lenght = value.Length;
Write(lenght);
if (_ptr + lenght >= _bufferSize) { Resize(lenght); }
Buffer.BlockCopy(value, 0, _items, _ptr, lenght);
_ptr += lenght;
}
public void WritePacketAsIs(byte[] packet)
{
if (packet == null) return;
int lenght = packet.Length;
if (_ptr + lenght >= _bufferSize) { Resize(lenght); }
Buffer.BlockCopy(packet, 0, _items, _ptr, lenght);
_ptr += lenght;
}
}
}