388 lines
9.1 KiB
C#
388 lines
9.1 KiB
C#
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using System;
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using System.Text;
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public class Packet : Base
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{
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// 4 for the package lenght in short ,one for package ID in byte ,and one for policy id in byte
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protected int ReservedSize = 0;
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protected int InitSize = 30;
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internal byte[] buffer;
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protected int pos;
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protected int size;
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//协议号
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protected UInt32 m_ProtocolCode;
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//public byte policyId
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//{
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// get { return m_ProtocolCode; }
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// set { m_ProtocolCode = value; }
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//}
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public int Position
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{
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get
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{
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return this.pos;
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}
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set
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{
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this.pos = value;
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}
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}
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public int Size
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{
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get
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{
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return this.size;
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}
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}
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public int Capability
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{
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get
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{
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return this.buffer.Length;
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}
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}
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public int Remaining
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{
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get
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{
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return this.size - this.pos;
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}
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}
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public byte[] Buffer
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{
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get
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{
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return this.buffer;
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}
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}
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public Packet Copy()
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{
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Packet p = new Packet();
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p.pos = pos;
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p.buffer = new byte[buffer.Length];
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Array.Copy(buffer, p.buffer, buffer.Length);
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p.size = size;
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return p;
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}
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public Packet()
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{
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}
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public Packet(int reservedSize)
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{
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ReservedSize = reservedSize;
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}
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public Packet(byte[] bytes)
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{
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Init(bytes);
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}
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protected void Init(byte[] bytes)
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{
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this.pos = 0;
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this.buffer = new byte[bytes.Length];
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Array.Copy(bytes, this.buffer, bytes.Length);
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this.size = bytes.Length;
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}
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public Packet(string str)
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{
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byte[] bytes = Encoding.UTF8.GetBytes(str);
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int len = bytes.Length;
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this.buffer = new byte[len + bytes.Length];
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byte[] lenbytes = DBitConverter.GetBytes(len, false);
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Array.Copy(lenbytes, 0, this.buffer, this.pos, 4);
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this.pos += 2;
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Array.Copy(bytes, 0, this.buffer, this.pos, len);
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this.pos += len;
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this.size = this.pos;
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}
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public void BeginPacket(UInt32 protocolCode)
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{
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m_ProtocolCode = protocolCode;
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EnsureCapacity(0);
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this.EnsureCapacity(2);
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byte[] bytes = DBitConverter.GetBytes(m_ProtocolCode, false);
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Array.Copy(bytes, 0, this.buffer, 4, 2);
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//buffer[5] = m_ProtocolCode;
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}
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public void SetPacketId(int packetId)
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{
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buffer[4] = (byte)packetId;
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}
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public void EndPacket()
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{
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int packetLen = (int)(pos - 4);
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byte[] bPackLen = DBitConverter.GetBytes(packetLen, false);
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buffer[0] = bPackLen[0];
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buffer[1] = bPackLen[1];
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buffer[2] = bPackLen[2];
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buffer[3] = bPackLen[3];
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}
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public byte[] GetData()
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{
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byte[] array = new byte[this.size];
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Array.Copy(this.buffer, array, this.size);
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return array;
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}
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public byte readByte()
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{
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if (buffer.Length - pos < 1)
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{
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LogError("Invalid Length");
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return 0;
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}
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byte result = buffer[pos];
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pos += 1;
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return result;
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}
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public byte[] readBytes(int len)
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{
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byte[] array = new byte[len];
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Array.Copy(this.buffer, this.pos, array, 0, len);
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pos += len;
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return array;
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}
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public byte[] readBytes()
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{
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var len = size - pos;
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byte[] array = new byte[len];
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Array.Copy(this.buffer, this.pos, array, 0, len);
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pos += len;
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return array;
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}
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public void writeByte(byte b)
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{
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this.EnsureCapacity(1);
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byte[] bytes = DBitConverter.GetBytes(b);
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Array.Copy(bytes, 0, this.buffer, this.pos, bytes.Length);
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this.pos += bytes.Length;
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if (this.size < this.pos)
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{
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this.size = this.pos;
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}
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}
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public void writeBytes(byte[] bytes)
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{
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// 确保缓冲区有足够的容量
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this.EnsureCapacity(bytes.Length);
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// 将字节数组复制到缓冲区
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Array.Copy(bytes, 0, this.buffer, this.pos, bytes.Length);
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// 更新位置指针
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this.pos += bytes.Length;
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// 更新缓冲区大小（如果需要）
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if (this.size < this.pos)
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this.size = this.pos;
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}
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public SByte readSByte()
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{
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if (buffer.Length - pos < 1)
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{
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LogError("Invalid Length");
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return 0;
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}
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SByte result = (SByte)buffer[pos];
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pos += 1;
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return result;
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}
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public void writeShort(short value)
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{
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this.EnsureCapacity(2);
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byte[] bytes = DBitConverter.GetBytes(value, false);
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Array.Copy(bytes, 0, this.buffer, this.pos, 2);
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this.pos += 2;
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if (this.size < this.pos)
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{
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this.size = this.pos;
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}
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}
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public void writeUshort(ushort value)
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{
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this.EnsureCapacity(2);
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byte[] bytes = DBitConverter.GetBytes(value, false);
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Array.Copy(bytes, 0, this.buffer, this.pos, 2);
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this.pos += 2;
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if (this.size < this.pos)
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{
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this.size = this.pos;
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}
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}
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public short readShort()
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{
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short result = DBitConverter.ToShort(this.buffer, this.pos, false);
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this.pos += 2;
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return result;
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}
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public ushort readUshort(bool asc = false)
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{
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ushort result = DBitConverter.ToUshort(this.buffer, this.pos, asc);
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this.pos += 2;
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return result;
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}
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public void writeInt(int value)
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{
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this.EnsureCapacity(4);
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byte[] bytes = DBitConverter.GetBytes(value, false);
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Array.Copy(bytes, 0, this.buffer, this.pos, 4);
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this.pos += 4;
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if (this.size < this.pos)
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{
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this.size = this.pos;
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}
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}
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public void writeUint(uint value)
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{
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this.EnsureCapacity(4);
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byte[] bytes = DBitConverter.GetBytes(value, false);
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Array.Copy(bytes, 0, this.buffer, this.pos, 4);
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this.pos += 4;
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if (this.size < this.pos)
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{
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this.size = this.pos;
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}
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}
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public int readInt()
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{
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int result = DBitConverter.ToInt(this.buffer, this.pos, false);
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this.pos += 4;
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return result;
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}
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public uint readUint()
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{
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uint result = DBitConverter.ToUint(this.buffer, this.pos, false);
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this.pos += 4;
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return result;
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}
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public void writeLong(long value)
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{
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this.EnsureCapacity(8);
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byte[] bytes = DBitConverter.GetBytes(value, false);
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Array.Copy(bytes, 0, this.buffer, this.pos, 8);
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this.pos += 8;
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if (this.size < this.pos)
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{
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this.size = this.pos;
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}
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}
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public long readLong()
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{
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long result = DBitConverter.ToLong(this.buffer, this.pos, false);
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this.pos += 8;
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return result;
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}
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public string readUUID()
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{
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long result = DBitConverter.ToLong(this.buffer, this.pos, false);
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this.pos += 8;
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return result.ToString();
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}
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public void writeFloat(float value)
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{
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this.EnsureCapacity(4);
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byte[] bytes = DBitConverter.GetBytes(value, false);
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Array.Copy(bytes, 0, this.buffer, this.pos, 4);
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this.pos += 4;
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if (this.size < this.pos)
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{
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this.size = this.pos;
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}
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}
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public float readFloat()
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{
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float result = DBitConverter.ToFloat(this.buffer, this.pos, false);
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this.pos += 4;
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return result;
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}
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public void writeString(string value)
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{
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byte[] bytes = Encoding.UTF8.GetBytes(value);
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int len = bytes.Length;
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this.EnsureCapacity(4 + len);
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this.writeInt((int)len);
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if (len <= 0)
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return;
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Array.Copy(bytes, 0, this.buffer, this.pos, len);
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this.pos += len;
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if (this.size < this.pos)
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{
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this.size = this.pos;
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}
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}
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public string readString()
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{
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int len = this.readInt();
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if (len == 0)
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{
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return string.Empty;
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}
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string result = Encoding.UTF8.GetString(this.buffer, this.pos, (int)len);
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this.pos += (int)len;
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return result;
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}
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public string[] readUTFP()
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{
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string oriStr = this.readString();
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byte paramsNum = this.readByte();
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string[] res = new string[paramsNum + 1];
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res[0] = oriStr;
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for (int i = 0; i < paramsNum; ++i)
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{
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res[i + 1] = this.readString();
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}
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return res;
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}
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protected void EnsureCapacity(int increament)
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{
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if (buffer == null)
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{
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buffer = new byte[InitSize + ReservedSize];
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pos = ReservedSize;
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size = ReservedSize;
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}
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int len = buffer.Length;
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if (len - pos >= increament)
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{
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return;
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}
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int count = (increament - (len - pos)) / InitSize;
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count += 1;
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byte[] tempBuff = new byte[len + InitSize * count];
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Array.Copy(buffer, 0, tempBuff, 0, len);
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buffer = tempBuff;
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}
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public bool hasRead()
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{
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return this.pos < size;
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}
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}
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