exception.cpp

经常用到的 socketAPI

#include "exception.h"
#include <iostream>
using namespace std;
namespace mylib{
#if defined(WIN32)

char g_errstring[1024];

const char* PrintError(DWORD errnumber)
{
	memset(g_errstring,0,1024);
   FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
		NULL,
		errnumber,
		LANG_NEUTRAL,
		g_errstring,
		1024,
		NULL );
   return g_errstring;
}

const char* STRERROR_WIN(int type)
{
	switch (type)
	{
	case WIN32_SYS:
         return PrintError(GetLastError());
		 break;
    case WIN32_SYS_WINSOCK:
		 return  PrintError(WSAGetLastError());
		 break;
	default:
	     return "noerr";
	}

}

#endif

//void my_new_handler()
//{
//	cerr<<"not enough mem!\n";
//	throw std::bad_alloc();
//   exit(-1);
//}

//new_handler Old_Handler_ = set_new_handler(my_new_handler);





CException::CException(int iErrorNo, const char* sErrorMsg, const char* sFile, int iLine)
{
	m_iErrorNo = iErrorNo;
	if (sErrorMsg)
		m_strErrorMsg = sErrorMsg;
	if (sFile)
		m_strFile = sFile;
	m_iLine = iLine;
}


CException::CException(const char* sErrorMsg, const char* sFile, int iLine)
{
	m_iErrorNo = EMPTY_ERROR_NO;
	if (sErrorMsg)
		m_strErrorMsg = sErrorMsg;
	if (sFile)
		m_strFile = sFile;
	m_iLine = iLine;	
}


ostream& operator << (ostream& os, const CException& e)
{
	if (e.m_iErrorNo != CException::EMPTY_ERROR_NO)
		os << e.m_iErrorNo << ":";
		
	os << e.m_strErrorMsg;
	
	if (!e.m_strFile.empty() && e.m_iLine != CException::EMPTY_ERROR_NO)
		os << " [" << e.m_strFile << ":" << e.m_iLine << "]";
		
	return os;
}


ostream& operator << (ostream& os, CNoMemException& e)
{
	return os << (CException&)e;
}

ostream& operator << (ostream& os, CEOutOfBounds& e)
{
	return os << (CException&)e;
}

ostream& operator << (ostream& os, CSocketException& e)
{
	return os << (CException&)e;
}

ostream& operator << (ostream& os, CThreadException& e)
{
	return os << (CException&)e;
}
}