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NetDataWriter.cs
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422 lines (371 loc) · 11.7 KB
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using System;
using System.Text;
namespace LiteNetLib.Utils
{
public class NetDataWriter
{
protected byte[] _data;
protected int _position;
private int _maxLength;
private readonly bool _autoResize;
public int Capacity
{
get { return _data.Length; }
}
public NetDataWriter()
{
_maxLength = 64;
_data = new byte[_maxLength];
_autoResize = true;
}
public NetDataWriter(bool autoResize)
{
_maxLength = 64;
_data = new byte[_maxLength];
_autoResize = autoResize;
}
public NetDataWriter(bool autoResize, int initialSize)
{
_maxLength = initialSize;
_data = new byte[_maxLength];
_autoResize = autoResize;
}
/// <summary>
/// Creates NetDataWriter from existing ByteArray
/// </summary>
/// <param name="bytes">Source byte array</param>
/// <param name="copy">Copy array to new location or use existing</param>
public static NetDataWriter FromBytes(byte[] bytes, bool copy)
{
if (copy)
{
var netDataWriter = new NetDataWriter(true, bytes.Length);
netDataWriter.Put(bytes);
return netDataWriter;
}
return new NetDataWriter(true, 0) {_data = bytes};
}
/// <summary>
/// Creates NetDataWriter from existing ByteArray (always copied data)
/// </summary>
/// <param name="bytes">Source byte array</param>
/// <param name="offset">Offset of array</param>
/// <param name="length">Length of array</param>
public static NetDataWriter FromBytes(byte[] bytes, int offset, int length)
{
var netDataWriter = new NetDataWriter(true, bytes.Length);
netDataWriter.Put(bytes, offset, length);
return netDataWriter;
}
public static NetDataWriter FromString(string value)
{
var netDataWriter = new NetDataWriter();
netDataWriter.Put(value);
return netDataWriter;
}
public void ResizeIfNeed(int newSize)
{
if (_maxLength < newSize)
{
while (_maxLength < newSize)
{
_maxLength *= 2;
}
Array.Resize(ref _data, _maxLength);
}
}
public void Reset(int size)
{
ResizeIfNeed(size);
_position = 0;
}
public void Reset()
{
_position = 0;
}
public byte[] CopyData()
{
byte[] resultData = new byte[_position];
Buffer.BlockCopy(_data, 0, resultData, 0, _position);
return resultData;
}
public byte[] Data
{
get { return _data; }
}
public int Length
{
get { return _position; }
}
public void Put(float value)
{
if (_autoResize)
ResizeIfNeed(_position + 4);
FastBitConverter.GetBytes(_data, _position, value);
_position += 4;
}
public void Put(double value)
{
if (_autoResize)
ResizeIfNeed(_position + 8);
FastBitConverter.GetBytes(_data, _position, value);
_position += 8;
}
public void Put(long value)
{
if (_autoResize)
ResizeIfNeed(_position + 8);
FastBitConverter.GetBytes(_data, _position, value);
_position += 8;
}
public void Put(ulong value)
{
if (_autoResize)
ResizeIfNeed(_position + 8);
FastBitConverter.GetBytes(_data, _position, value);
_position += 8;
}
public void Put(int value)
{
if (_autoResize)
ResizeIfNeed(_position + 4);
FastBitConverter.GetBytes(_data, _position, value);
_position += 4;
}
public void Put(uint value)
{
if (_autoResize)
ResizeIfNeed(_position + 4);
FastBitConverter.GetBytes(_data, _position, value);
_position += 4;
}
public void Put(char value)
{
if (_autoResize)
ResizeIfNeed(_position + 2);
FastBitConverter.GetBytes(_data, _position, value);
_position += 2;
}
public void Put(ushort value)
{
if (_autoResize)
ResizeIfNeed(_position + 2);
FastBitConverter.GetBytes(_data, _position, value);
_position += 2;
}
public void Put(short value)
{
if (_autoResize)
ResizeIfNeed(_position + 2);
FastBitConverter.GetBytes(_data, _position, value);
_position += 2;
}
public void Put(sbyte value)
{
if (_autoResize)
ResizeIfNeed(_position + 1);
_data[_position] = (byte)value;
_position++;
}
public void Put(byte value)
{
if (_autoResize)
ResizeIfNeed(_position + 1);
_data[_position] = value;
_position++;
}
public void Put(byte[] data, int offset, int length)
{
if (_autoResize)
ResizeIfNeed(_position + length);
Buffer.BlockCopy(data, offset, _data, _position, length);
_position += length;
}
public void Put(byte[] data)
{
if (_autoResize)
ResizeIfNeed(_position + data.Length);
Buffer.BlockCopy(data, 0, _data, _position, data.Length);
_position += data.Length;
}
public void PutBytesWithLength(byte[] data, int offset, int length)
{
if (_autoResize)
ResizeIfNeed(_position + length + 4);
FastBitConverter.GetBytes(_data, _position, length);
Buffer.BlockCopy(data, offset, _data, _position + 4, length);
_position += length + 4;
}
public void PutBytesWithLength(byte[] data)
{
if (_autoResize)
ResizeIfNeed(_position + data.Length + 4);
FastBitConverter.GetBytes(_data, _position, data.Length);
Buffer.BlockCopy(data, 0, _data, _position + 4, data.Length);
_position += data.Length + 4;
}
public void Put(bool value)
{
if (_autoResize)
ResizeIfNeed(_position + 1);
_data[_position] = (byte)(value ? 1 : 0);
_position++;
}
public void PutArray(float[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
if (_autoResize)
ResizeIfNeed(_position + len * 4 + 2);
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(double[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
if (_autoResize)
ResizeIfNeed(_position + len * 8 + 2);
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(long[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
if (_autoResize)
ResizeIfNeed(_position + len * 8 + 2);
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(ulong[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
if (_autoResize)
ResizeIfNeed(_position + len * 8 + 2);
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(int[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
if (_autoResize)
ResizeIfNeed(_position + len * 4 + 2);
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(uint[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
if (_autoResize)
ResizeIfNeed(_position + len * 4 + 2);
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(ushort[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
if (_autoResize)
ResizeIfNeed(_position + len * 2 + 2);
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(short[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
if (_autoResize)
ResizeIfNeed(_position + len * 2 + 2);
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(bool[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
if (_autoResize)
ResizeIfNeed(_position + len + 2);
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(string[] value)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i]);
}
}
public void PutArray(string[] value, int maxLength)
{
ushort len = value == null ? (ushort)0 : (ushort)value.Length;
Put(len);
for (int i = 0; i < len; i++)
{
Put(value[i], maxLength);
}
}
public void Put(NetEndPoint endPoint)
{
Put(endPoint.Host);
Put(endPoint.Port);
}
public void Put(string value)
{
if (string.IsNullOrEmpty(value))
{
Put(0);
return;
}
//put bytes count
int bytesCount = Encoding.UTF8.GetByteCount(value);
if (_autoResize)
ResizeIfNeed(_position + bytesCount + 4);
Put(bytesCount);
//put string
Encoding.UTF8.GetBytes(value, 0, value.Length, _data, _position);
_position += bytesCount;
}
public void Put(string value, int maxLength)
{
if (string.IsNullOrEmpty(value))
{
Put(0);
return;
}
int length = value.Length > maxLength ? maxLength : value.Length;
//calculate max count
int bytesCount = Encoding.UTF8.GetByteCount(value);
if (_autoResize)
ResizeIfNeed(_position + bytesCount + 4);
//put bytes count
Put(bytesCount);
//put string
Encoding.UTF8.GetBytes(value, 0, length, _data, _position);
_position += bytesCount;
}
}
}