ByteArrary(优化数据存储和数据流) - 纳金网

public class ByteArray
{
private MemoryStream m_Stream = new MemoryStream();
private BinaryReader m_Reader = null;
private BinaryWriter m_Writer = null;
public ByteArray()
{
Init();
}
public ByteArray(MemoryStream ms)
{
m_Stream = ms;
Init();
}
public ByteArray(byte[] buffer)
{
m_Stream = new MemoryStream(buffer);
Init();
}
private void Init()
{
m_Writer = new BinaryWriter(m_Stream);
m_Reader = new BinaryReader(m_Stream);
}
public int Length
{
get { return (int)m_Stream.Length; }
}
public int Postion
{
get { return (int)m_Stream.Position; }
set { m_Stream.Position = value; }
}
public byte[] Buffer
{
get { return m_Stream.GetBuffer(); }
}
internal MemoryStream MemoryStream { get { return m_Stream; } }
public bool ReadBoolean()
{
return m_Reader.ReadBoolean();
}
public byte ReadByte()
{
return m_Reader.ReadByte();
}
public void ReadBytes(byte[] bytes, uint offset, uint length)
{
byte[] tmp = m_Reader.ReadBytes((int)length);
for (int i = 0; i < tmp.Length; i++)
bytes[i + offset] = tmp[i];
//m_Reader.ReadBytes(bytes, offset, length);
}
public double ReadDouble()
{
return m_Reader.ReadDouble();
}
public float ReadFloat()
{
byte[] bytes = m_Reader.ReadBytes(4);
byte[] invertedBytes = new byte[4];
//Grab the bytes in reverse order from the backwards index
for (int i = 3, j = 0; i >= 0; i--, j++)
{
invertedBytes[j] = bytes[i];
}
float value = BitConverter.ToSingle(invertedBytes, 0);
return value;
// return m_Reader.ReadFloat();
}
public int ReadInt()
{
return m_Reader.ReadInt32();
}
public short ReadShort()
{
return m_Reader.ReadInt16();
}
public byte ReadUnsignedByte()
{
return m_Reader.ReadByte();
}
public uint ReadUnsignedInt()
{
return (uint)m_Reader.ReadInt32();
}
public ushort ReadUnsignedShort()
{
return m_Reader.ReadUInt16();
}
public string ReadUTF()
{
return m_Reader.ReadString();
}
public string ReadUTFBytes(uint length)
{
if (length == 0)
return string.Empty;
UTF8Encoding utf8 = new UTF8Encoding(false, true);
byte[] encodedBytes = m_Reader.ReadBytes((int)length);
string decodedString = utf8.GetString(encodedBytes, 0, encodedBytes.Length);
return decodedString;
}
public void WriteBoolean(bool value)
{
m_Writer.BaseStream.WriteByte(value ? ((byte)1) : ((byte)0));
// m_Writer.WriteBoolean(value);
}
public void WriteByte(byte value)
{
m_Writer.BaseStream.WriteByte(value);
// m_Writer.WriteByte(value);
}
public void WriteBytes(byte[] buffer)
{
for (int i = 0; buffer != null && i < buffer.Length; i++)
m_Writer.BaseStream.WriteByte(buffer[i]);
}
public void WriteBytes(byte[] bytes, int offset, int length)
{
for (int i = offset; i < offset + length; i++)
m_Writer.BaseStream.WriteByte(bytes[i]);
}
public void WriteDouble(double value)
{
byte[] bytes = BitConverter.GetBytes(value);
WriteBigEndian(bytes);
}
public void WriteFloat(float value)
{
byte[] bytes = BitConverter.GetBytes(value);
WriteBigEndian(bytes);
}
private void WriteBigEndian(byte[] bytes)
{
if (bytes == null)
return;
for (int i = bytes.Length - 1; i >= 0; i--)
{
m_Writer.BaseStream.WriteByte(bytes[i]);
}
}
public void WriteInt32(int value)
{
byte[] bytes = BitConverter.GetBytes(value);
WriteBigEndian(bytes);
}
public void WriteInt(int value)
{
WriteInt32(value);
}
public void WriteShort(int value)
{
byte[] bytes = BitConverter.GetBytes((ushort)value);
WriteBigEndian(bytes);
}
public void WriteUnsignedInt(uint value)
{
WriteInt32((int)value);
}
public void WriteUTF(string value)
{
UTF8Encoding utf8Encoding = new UTF8Encoding();
int byteCount = utf8Encoding.GetByteCount(value);
byte[] buffer = utf8Encoding.GetBytes(value);
WriteShort(byteCount);
if (buffer.Length > 0)
m_Writer.Write(buffer);
}
public void WriteUTFBytes(string value)
{
UTF8Encoding utf8Encoding = new UTF8Encoding();
byte[] buffer = utf8Encoding.GetBytes(value);
if (buffer.Length > 0)
m_Writer.Write(buffer);
}
public void WriteStringBytes(string value)
{
UTF8Encoding utf8Encoding = new UTF8Encoding();
byte[] buffer = utf8Encoding.GetBytes(value);
if (buffer.Length > 0)
{
m_Writer.Write(buffer.Length);
m_Writer.Write(buffer);
}
}
}

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