C++ Q_vsnprintf函数代码示例

/**
 * @brief Sends a reliable command string to be interpreted by the client game
 * module: "cp", "print", "chat", etc
 *
 * A NULL client will broadcast to all clients
 */
void QDECL SV_SendServerCommand(client_t *cl, const char *fmt, ...)
{
	va_list  argptr;
	byte     message[MAX_MSGLEN];
	client_t *client;
	int      j;

	va_start(argptr, fmt);
	Q_vsnprintf((char *)message, sizeof(message), fmt, argptr);
	va_end(argptr);

	// do not forward server command messages that would be too big to clients
	// ( q3infoboom / q3msgboom stuff )
	// see http://aluigi.altervista.org/adv/q3msgboom-adv.txt
	if (strlen((char *)message) > 1022)
	{
		SV_WriteAttackLog("Warning: q3infoboom/q3msgboom exploit attack.\n"); // FIXME: add client slot
		return;
	}

	if (cl != NULL)
	{
		SV_AddServerCommand(cl, (char *)message);
		return;
	}

	// hack to echo broadcast prints to console
	if (com_dedicated->integer && !strncmp((char *)message, "print", 5))
	{
		Com_Printf("broadcast: %s\n", SV_ExpandNewlines((char *)message));
	}

	// send the data to all relevent clients
	for (j = 0, client = svs.clients; j < sv_maxclients->integer ; j++, client++)
	{
		if (client->state < CS_PRIMED)
		{
			continue;
		}
		// don't need to send messages to AI
		if (client->gentity && (client->gentity->r.svFlags & SVF_BOT))
		{
			continue;
		}

		SV_AddServerCommand(client, (char *)message);
	}
}

void dMessage (int num, const char *msg, ...)
{
  va_list ap;
  char buf[2048];

  va_start (ap, msg);
  Q_vsnprintf(buf, sizeof(buf), msg, ap);
  va_end(ap);

  if(num)
  {
    Com_PrintError("\nODE Message %d: %s\n", num, buf);
  }else{
    Com_PrintError("\nODE Message: %s\n", buf);
  }
}

///////////////////////////////////////////////////////////////////////
// botsafe centerprintf
///////////////////////////////////////////////////////////////////////
void safe_centerprintf (edict_t *ent, char *fmt, ...)
{
	char	bigbuffer[0x10000];
	va_list		argptr;
	int len;

	if (!ent->inuse || ent->is_bot)
		return;
	
	va_start (argptr, fmt);
	len = Q_vsnprintf (bigbuffer, sizeof(bigbuffer), fmt, argptr);
	va_end (argptr);
	
	gi.centerprintf(ent, "%s", bigbuffer);
	//gi.centerprintf(ent, bigbuffer);
}

void QDECL SV_RefPrintf( int print_level, const char *fmt, ...) {
	va_list		argptr;
	char		msg[MAXPRINTMSG];
	
	va_start (argptr,fmt);
	Q_vsnprintf(msg, sizeof(msg), fmt, argptr);
	va_end (argptr);

	if ( print_level == PRINT_ALL ) {
		Com_Printf ("%s", msg);
	} else if ( print_level == PRINT_WARNING ) {
		Com_Printf (S_COLOR_YELLOW "%s", msg);		// yellow
	} else if ( print_level == PRINT_DEVELOPER ) {
		Com_DPrintf (S_COLOR_RED "%s", msg);		// red
	}
}

void QDECL Com_Printf(const char *msg, ...) {
	va_list argptr;
	char    text[1024];

	va_start(argptr, msg);
	Q_vsnprintf(text, sizeof (text), msg, argptr);
	va_end(argptr);

#ifdef CGAMEDLL
	CG_Printf("%s", text);
#elif defined GAMEDLL
	G_Printf("%s", text);
#else
	trap_Print(va("%s", text));
#endif
}

	void SetValue( const char *pValue, ... )
	{
		char valueString[4096];
		va_list marker;
		va_start( marker, pValue );
		Q_vsnprintf( valueString, sizeof( valueString ), pValue, marker );
		va_end( marker );

#ifdef WIN32
		char str[4096];
		Q_snprintf( str, sizeof( str ), "%s=%s", m_pVarName, valueString );
		_putenv( str );
#else
		setenv( m_pVarName, valueString, 1 );
#endif
	}

void udtContext::LogError(UDT_PRINTF_FORMAT_ARG const char* format, ...) const
{
	if(!_messageCallback)
	{
		return;
	}

	char msg[MAXPRINTMSG];

	va_list argptr;
	va_start(argptr, format);
	Q_vsnprintf(msg, sizeof(msg) - 1, format, argptr);
	va_end(argptr);

	(*_messageCallback)(2, msg);
}

/* <35f03> ../engine/host.c:646 */
void Host_ClientCommands(const char *fmt, ...)
{
	va_list argptr;
	char string[1024];

	va_start(argptr, fmt);
	if (!host_client->fakeclient)
	{
		Q_vsnprintf(string, sizeof(string), fmt, argptr);
		string[sizeof(string) - 1] = 0;

		MSG_WriteByte(&host_client->netchan.message, svc_stufftext);
		MSG_WriteString(&host_client->netchan.message, string);
	}
	va_end(argptr);
}

void VID_Printf (int print_level, char *fmt, ...)
{
	va_list		argptr;
	char		msg[MAXPRINTMSG];
//	static qboolean	inupdate;

	va_start (argptr, fmt);
//	vsprintf (msg, fmt, argptr);
	Q_vsnprintf (msg, sizeof(msg), fmt, argptr);
	va_end (argptr);

	if (print_level == PRINT_ALL)
		Com_Printf ("%s", msg);
	else
		Com_DPrintf ("%s", msg);
}

void dError (int num, const char *msg, ...)
{
  va_list ap;
  char buf[2048];

  va_start (ap, msg);
  Q_vsnprintf(buf, sizeof(buf), msg, ap);
  va_end(ap);

  if(num)
  {
    Com_Error(ERR_FATAL, "\nODE Error %d: %s\n", num, buf);
  }else{
    Com_Error(ERR_FATAL, "\nODE Error: %s\n", buf);
  }
}

/**
 * @note Both client and server can use this, and it will output
 * to the appropriate place.
 */
void Com_vPrintf (const char* fmt, va_list ap)
{
	char msg[MAXPRINTMSG];

	Q_vsnprintf(msg, sizeof(msg), fmt, ap);

	/* redirect the output? */
	if (rd_buffer) {
		if ((strlen(msg) + strlen(rd_buffer)) > (rd_buffersize - 1)) {
			NET_OOB_Printf(rd_stream, SV_CMD_PRINT "\n%s", rd_buffer);
			rd_buffer[0] = '\0';
		}
		Q_strcat(rd_buffer, sizeof(char) * rd_buffersize, "%s", msg);
		return;
	}

	Con_Print(msg);

	/* also echo to debugging console */
	Sys_ConsoleOutput(msg);

	/* logfile */
	if (logfile_active && logfile_active->integer) {
		if (!logfile.f) {
			if (logfile_active->integer > 2)
				FS_OpenFile(consoleLogName, &logfile, FILE_APPEND);
			else
				FS_OpenFile(consoleLogName, &logfile, FILE_WRITE);
		}
		if (logfile.f) {
			/* strip color codes */
			const char* output = msg;

			if (output[strlen(output) - 1] == '\n') {
				char timestamp[40];
				Com_MakeTimestamp(timestamp, sizeof(timestamp));
				FS_Write(timestamp, strlen(timestamp), &logfile);
				FS_Write(" ", 1, &logfile);
			}

			FS_Write(output, strlen(output), &logfile);

			if (logfile_active->integer > 1)
				fflush(logfile.f);	/* force it to save every time */
		}
	}
}

/**
 * @note Both client and server can use this, and it will
 * do the appropriate things.
 */
void Com_Error (int code, const char* fmt, ...)
{
	va_list argptr;
	static char msg[MAXPRINTMSG];
	static bool recursive = false;

	if (recursive)
		Sys_Error("recursive error after: %s", msg);
	recursive = true;

	va_start(argptr, fmt);
	Q_vsnprintf(msg, sizeof(msg), fmt, argptr);
	va_end(argptr);

	switch (code) {
	case ERR_DISCONNECT:
		Com_Printf("%s\n", msg);
		CL_Drop();
		recursive = false;
		Com_Drop();
	case ERR_DROP:
		Com_Printf("********************\n");
		Com_Printf("ERROR: %s\n", msg);
		Com_Printf("********************\n");
		Sys_Backtrace();
		SV_Shutdown("Server crashed.", false);
		CL_Drop();
		recursive = false;
		Com_Drop();
	default:
		Com_Printf("%s\n", msg);
		SV_Shutdown("Server fatal crashed", false);

		/* send an receive net messages a last time */
		NET_Wait(0);

		FS_CloseFile(&logfile);
		if (pipefile.f != nullptr) {
			FS_CloseFile(&pipefile);
			FS_RemoveFile(va("%s/%s", FS_Gamedir(), pipefile.name));
		}

		CL_Shutdown();
		Qcommon_Shutdown();
		Sys_Error("Shutdown");
	}
}

void CBaseGameStats::StatsLog( char const *fmt, ... )
{
	if ( !m_bLogging && !m_bLoggingToFile )
		return;

	char buf[ 2048 ];
	va_list argptr;
	va_start( argptr, fmt );
	Q_vsnprintf( buf, sizeof( buf ), fmt, argptr );
	va_end( argptr );

	// Prepend timestamp and spew it

	// Prepend the time.
	time_t aclock;
	time( &aclock );
	struct tm *newtime = localtime( &aclock );

	
	char timeString[ 128 ];
	Q_strncpy( timeString, asctime( newtime ), sizeof( timeString ) );
	// Get rid of the \n.
	char *pEnd = strstr( timeString, "\n" );
	if ( pEnd )
	{
		*pEnd = 0;
	}

	if ( m_bLogging )
	{
		DevMsg( "[GS %s - %7.2f] %s", timeString, gpGlobals->realtime, buf );
	}

	if ( m_bLoggingToFile )
	{
		if ( FILESYSTEM_INVALID_HANDLE == g_LogFileHandle )
		{
			g_LogFileHandle = filesystem->Open( GAMESTATS_LOG_FILE, "a", GAMESTATS_PATHID );
		}

		if ( FILESYSTEM_INVALID_HANDLE != g_LogFileHandle )
		{
			filesystem->FPrintf( g_LogFileHandle, "[GS %s - %7.2f] %s", timeString, gpGlobals->realtime, buf );
			filesystem->Flush( g_LogFileHandle );
		}
	}
}

/* <2d4b0a> ../game_shared/shared_util.cpp:68 */
char *SharedVarArgs(char *format, ...)
{
	va_list argptr;
	const int BufLen = 1024;
	const int NumBuffers = 4;

	static char string[ NumBuffers ][ BufLen ];
	static int curstring = 0;

	curstring = (curstring + 1) % NumBuffers;

	va_start(argptr, format);
	Q_vsnprintf(string[ curstring ], BufLen, format, argptr);
	va_end(argptr);

	return string[ curstring ];
}

/* <35e4e> ../engine/host.c:594 */
void SV_ClientPrintf(const char *fmt, ...)
{
	va_list va;
	char string[1024];

	if (!host_client->fakeclient)
	{
		va_start(va, fmt);
		Q_vsnprintf(string, ARRAYSIZE(string) - 1, fmt, va);
		va_end(va);

		string[ARRAYSIZE(string) - 1] = 0;

		MSG_WriteByte(&host_client->netchan.message, svc_print);
		MSG_WriteString(&host_client->netchan.message, string);
	}
}