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// test.cpp : 定义控制台应用程序的入口点。

//

 

 

 

 

 

#pragma  pack(push,1)

 

struct SOCKPACKET

{

WORD wSize;

WORD byType;

char pData[0];

};

 

struct SOCKHEAD

{

WORD wSize;

WORD byType;

};

 

 

#pragma  pack(pop)

 

 

 

 

 

 

char* __stdcall ReadPacketV( char * packet,va_list va)

{

char * format = va_arg(va, char* );

for( ; ; )

{

switch( *format++ )

{

case 'b':

*va_arg(va,char* ) = *packet++;

break;

case 'B':

*va_arg(va,int* ) = *packet++;

case 'd'"

*va_arg(va,DWORD* ) = *(DWORD*)packet;

packet += sizeof(DWORD);

break;

case 's':

*va_arg(va,char**) = packet;

for( ; *packet++!=0 ; );

break;

case 'S':

char* str = va_arg(va,char*);

for(;(*str++ = *packet++)!= 0;);

break;

case 'm':

{

char *ptr = va_arg(va,char* );

int size = va_arg(va,int);

memcpy( ptr,packet,size);

packe t+= size;

}

break;

case 'M':

char** ptr = va_arg(va,char**);

int size = va_arg(va,int);

*ptr = packet;

packet+=size;

break;

case 0:

return packet;

default:

break;

}

}

}

 

 

 

char* ReadPacket(int iCode,char* packet, const char* lpszFormat,...)

{

SOCKPACKET *lpstPacket = (SOCKET*) packet;

 

int size = lpstPacket->wSize;

va_list va;

va_start(va,packet);

packet = ReadPacketV(packet,va);

va_end(va);

 

return packet;

 

}