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#pragma once
#include "../cSocket.h"
#include "../PacketID.h"
#define PACKET_INCOMPLETE -2
#define PACKET_ERROR -1
// Use this macro to simplify handling several ReadXXX in a row. It assumes that you want [a_Data, a_Size] parsed (which is true for all Parse() functions)
#define HANDLE_PACKET_READ(Proc, Var, TotalBytes) \
{ \
int res = Proc(a_Data + TotalBytes, a_Size - TotalBytes, Var); \
if (res < 0) \
{ \
return res; \
} \
TotalBytes += res; \
}
class cPacket
{
public:
cPacket()
: m_PacketID( 0 )
{}
virtual ~cPacket() {}
/// Called to parse the packet. Packet type has already been read and the correct packet type created. Return the number of characters processed, PACKET_INCOMPLETE for incomplete data, PACKET_ERROR for error
virtual int Parse(const char * a_Data, int a_Size)
{
LOGERROR("Undefined Parse function for packet type 0x%x\n", m_PacketID );
ASSERT(!"Undefined Parse function");
return -1;
}
/// Called to serialize the packet into a string. Append all packet data to a_Data, including the packet type!
virtual void Serialize(AString & a_Data) const
{
LOGERROR("Undefined Serialize function for packet type 0x%x\n", m_PacketID );
ASSERT(!"Undefined Serialize function");
}
virtual cPacket * Clone() const = 0;
unsigned char m_PacketID;
protected:
// These return the number of characters processed, PACKET_INCOMPLETE for incomplete data, PACKET_ERROR for error:
static int ReadString16(const char * a_Data, int a_Size, AString & a_OutString );
static int ReadShort (const char * a_Data, int a_Size, short & a_Short );
static int ReadInteger (const char * a_Data, int a_Size, int & a_OutInteger );
static int ReadInteger (const char * a_Data, int a_Size, unsigned int & a_OutInteger );
static int ReadFloat (const char * a_Data, int a_Size, float & a_OutFloat );
static int ReadDouble (const char * a_Data, int a_Size, double & a_OutDouble );
static int ReadByte (const char * a_Data, int a_Size, char & a_OutByte );
static int ReadByte (const char * a_Data, int a_Size, unsigned char & a_OutByte );
static int ReadLong (const char * a_Data, int a_Size, long long & a_OutLong );
static int ReadBool (const char * a_Data, int a_Size, bool & a_OutBool );
// These append the data into the a_Dst string:
static void AppendString ( AString & a_Dst, const AString & a_String);
static void AppendString16( AString & a_Dst, const AString & a_String);
static void AppendShort ( AString & a_Dst, short a_Short);
static void AppendShort ( AString & a_Dst, unsigned short a_Short);
static void AppendInteger ( AString & a_Dst, int a_Integer);
static void AppendInteger ( AString & a_Dst, unsigned int a_Integer);
static void AppendFloat ( AString & a_Dst, float a_Float);
static void AppendDouble ( AString & a_Dst, const double & a_Double);
static void AppendByte ( AString & a_Dst, char a_Byte);
static void AppendLong ( AString & a_Dst, const long long & a_Long);
static void AppendBool ( AString & a_Dst, bool a_Bool);
static void AppendData ( AString & a_Dst, const char * a_Data, unsigned int a_Size);
};
typedef std::list <cPacket*> PacketList;
typedef std::deque<cPacket *> PacketQueue;
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