C++ FS_FCloseFile函数代码示例

void QGL_EnableLogging( bool enable ) {
	static bool isEnabled;

	// return if we're already active
	if ( isEnabled && enable ) {
		// decrement log counter and stop if it has reached 0
		Cvar_Set( "r_logFile", va( "%d", r_logFile->integer - 1 ) );
		if ( r_logFile->integer ) {
			return;
		}
		enable = false;
	}

	// return if we're already disabled
	if ( !enable && !isEnabled ) {
		return;
	}

	isEnabled = enable;

	if ( enable ) {
		if ( !log_fp ) {
			struct tm* newtime;
			time_t aclock;

			time( &aclock );
			newtime = localtime( &aclock );

			log_fp = FS_FOpenFileWrite( "gl.log" );

			QGL_Log( "%s\n", asctime( newtime ) );
		}

#define GLF_0( r, n )             qgl ## n = log ## n;
#define GLF_V0( n )               qgl ## n = log ## n;
#define GLF_1( r, n, t1, p1 )     qgl ## n = log ## n;
#define GLF_V1( n, t1, p1 )       qgl ## n = log ## n;
#define GLF_V2( n, t1, p1, t2, p2 )   qgl ## n = log ## n;
#define GLF_3( r, n, t1, p1, t2, p2, t3, p3 ) qgl ## n = log ## n;
#define GLF_V3( n, t1, p1, t2, p2, t3, p3 )   qgl ## n = log ## n;
#define GLF_V4( n, t1, p1, t2, p2, t3, p3, t4, p4 )   qgl ## n = log ## n;
#define GLF_V5( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5 )   qgl ## n = log ## n;
#define GLF_V6( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6 )   qgl ## n = log ## n;
#define GLF_V7( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6, t7, p7 )   qgl ## n = log ## n;
#define GLF_V8( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6, t7, p7, t8, p8 )   qgl ## n = log ## n;
#define GLF_V9( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6, t7, p7, t8, p8, t9, p9 )   qgl ## n = log ## n;
#define GLF_V10( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6, t7, p7, t8, p8, t9, p9, t10, p10 )    qgl ## n = log ## n;
#include "qgl_functions.h"
#undef GLF_0
#undef GLF_V0
#undef GLF_1
#undef GLF_V1
#undef GLF_V2
#undef GLF_3
#undef GLF_V3
#undef GLF_V4
#undef GLF_V5
#undef GLF_V6
#undef GLF_V7
#undef GLF_V8
#undef GLF_V9
#undef GLF_V10
	} else {
		if ( log_fp ) {
			QGL_Log( "*** CLOSING LOG ***\n" );
			FS_FCloseFile( log_fp );
			log_fp = 0;
		}

#define GLF_0( r, n )             qgl ## n = gl ## n;
#define GLF_V0( n )               qgl ## n = gl ## n;
#define GLF_1( r, n, t1, p1 )     qgl ## n = gl ## n;
#define GLF_V1( n, t1, p1 )       qgl ## n = gl ## n;
#define GLF_V2( n, t1, p1, t2, p2 )   qgl ## n = gl ## n;
#define GLF_3( r, n, t1, p1, t2, p2, t3, p3 ) qgl ## n = gl ## n;
#define GLF_V3( n, t1, p1, t2, p2, t3, p3 )   qgl ## n = gl ## n;
#define GLF_V4( n, t1, p1, t2, p2, t3, p3, t4, p4 )   qgl ## n = gl ## n;
#define GLF_V5( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5 )   qgl ## n = gl ## n;
#define GLF_V6( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6 )   qgl ## n = gl ## n;
#define GLF_V7( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6, t7, p7 )   qgl ## n = gl ## n;
#define GLF_V8( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6, t7, p7, t8, p8 )   qgl ## n = gl ## n;
#define GLF_V9( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6, t7, p7, t8, p8, t9, p9 )   qgl ## n = gl ## n;
#define GLF_V10( n, t1, p1, t2, p2, t3, p3, t4, p4, t5, p5, t6, p6, t7, p7, t8, p8, t9, p9, t10, p10 )    qgl ## n = gl ## n;
#include "qgl_functions.h"
#undef GLF_0
#undef GLF_V0
#undef GLF_1
#undef GLF_V1
#undef GLF_V2
#undef GLF_3
#undef GLF_V3
#undef GLF_V4
#undef GLF_V5
#undef GLF_V6
#undef GLF_V7
#undef GLF_V8
#undef GLF_V9
#undef GLF_V10
	}
}

/*
====================
CL_CgameSystemCalls

The cgame module is making a system call
====================
*/
intptr_t CL_CgameSystemCalls( intptr_t *args ) {
	switch ( args[0] ) {
	case CG_PRINT:
		Com_Printf( "%s", (const char*)VMA(1) );
		return 0;
	case CG_ERROR:
		Com_Error( ERR_DROP, "%s", (const char*)VMA(1) );
		return 0;
	case CG_MILLISECONDS:
		return Sys_Milliseconds();
	case CG_CVAR_REGISTER:
		Cvar_Register( VMA( 1 ), VMA( 2 ), VMA( 3 ), args[4] );
		return 0;
	case CG_CVAR_UPDATE:
		Cvar_Update( VMA( 1 ) );
		return 0;
	case CG_CVAR_SET:
		Cvar_SetSafe( VMA(1), VMA(2) );
		return 0;
	case CG_CVAR_VARIABLESTRINGBUFFER:
		Cvar_VariableStringBuffer( VMA( 1 ), VMA( 2 ), args[3] );
		return 0;
	case CG_ARGC:
		return Cmd_Argc();
	case CG_ARGV:
		Cmd_ArgvBuffer( args[1], VMA( 2 ), args[3] );
		return 0;
	case CG_ARGS:
		Cmd_ArgsBuffer( VMA( 1 ), args[2] );
		return 0;
	case CG_FS_FOPENFILE:
		return FS_FOpenFileByMode( VMA( 1 ), VMA( 2 ), args[3] );
	case CG_FS_READ:
		FS_Read( VMA( 1 ), args[2], args[3] );
		return 0;
	case CG_FS_WRITE:
		return FS_Write( VMA( 1 ), args[2], args[3] );
	case CG_FS_FCLOSEFILE:
		FS_FCloseFile( args[1] );
		return 0;
	case CG_SENDCONSOLECOMMAND:
		Cbuf_AddText( VMA( 1 ) );
		return 0;
	case CG_ADDCOMMAND:
		CL_AddCgameCommand( VMA( 1 ) );
		return 0;
	case CG_REMOVECOMMAND:
		Cmd_RemoveCommandSafe( VMA(1) );
		return 0;
	case CG_SENDCLIENTCOMMAND:
		CL_AddReliableCommand(VMA(1), qfalse);
		return 0;
	case CG_UPDATESCREEN:
		// this is used during lengthy level loading, so pump message loop
//		Com_EventLoop();	// FIXME: if a server restarts here, BAD THINGS HAPPEN!
// We can't call Com_EventLoop here, a restart will crash and this _does_ happen
// if there is a map change while we are downloading at pk3.
// ZOID
		SCR_UpdateScreen();
		return 0;
	case CG_CM_LOADMAP:
		CL_CM_LoadMap( VMA( 1 ) );
		return 0;
	case CG_CM_NUMINLINEMODELS:
		return CM_NumInlineModels();
	case CG_CM_INLINEMODEL:
		return CM_InlineModel( args[1] );
	case CG_CM_TEMPBOXMODEL:
		return CM_TempBoxModel( VMA( 1 ), VMA( 2 ), qfalse );
	case CG_CM_TEMPCAPSULEMODEL:
		return CM_TempBoxModel( VMA( 1 ), VMA( 2 ), qtrue );
	case CG_CM_POINTCONTENTS:
		return CM_PointContents( VMA( 1 ), args[2] );
	case CG_CM_TRANSFORMEDPOINTCONTENTS:
		return CM_TransformedPointContents( VMA( 1 ), args[2], VMA( 3 ), VMA( 4 ) );
	case CG_CM_BOXTRACE:
		CM_BoxTrace( VMA( 1 ), VMA( 2 ), VMA( 3 ), VMA( 4 ), VMA( 5 ), args[6], args[7], /*int capsule*/ qfalse );
		return 0;
	case CG_CM_TRANSFORMEDBOXTRACE:
		CM_TransformedBoxTrace( VMA( 1 ), VMA( 2 ), VMA( 3 ), VMA( 4 ), VMA( 5 ), args[6], args[7], VMA( 8 ), VMA( 9 ), /*int capsule*/ qfalse );
		return 0;
	case CG_CM_CAPSULETRACE:
		CM_BoxTrace( VMA( 1 ), VMA( 2 ), VMA( 3 ), VMA( 4 ), VMA( 5 ), args[6], args[7], /*int capsule*/ qtrue );
		return 0;
	case CG_CM_TRANSFORMEDCAPSULETRACE:
		CM_TransformedBoxTrace( VMA( 1 ), VMA( 2 ), VMA( 3 ), VMA( 4 ), VMA( 5 ), args[6], args[7], VMA( 8 ), VMA( 9 ), /*int capsule*/ qtrue );
		return 0;
	case CG_CM_MARKFRAGMENTS:
		return re.MarkFragments( args[1], VMA( 2 ), VMA( 3 ), args[4], VMA( 5 ), args[6], VMA( 7 ) );
	case CG_S_STARTSOUND:
		S_StartSound( VMA( 1 ), args[2], args[3], args[4] );
		return 0;
//----(SA)	added
//.........这里部分代码省略.........

/*
================
SV_SpawnServer

Change the server to a new map, taking all connected
clients along with it.

================
*/
void SV_SpawnServer (char *server, char *spawnpoint, server_state_t serverstate, qboolean attractloop, qboolean loadgame)
{
	int			i;
	unsigned	checksum;

	if (attractloop)
		Cvar_Set ("paused", "0");

	Com_Printf ("------- Server Initialization -------\n");

	Com_DPrintf ("SpawnServer: %s\n",server);
	if (sv.demofile)
		FS_FCloseFile (sv.demofile);

	svs.spawncount++;		// any partially connected client will be
							// restarted
	sv.state = ss_dead;
	Com_SetServerState (sv.state);

	// wipe the entire per-level structure
	memset (&sv, 0, sizeof(sv));
	svs.realtime = 0;
	sv.loadgame = loadgame;
	sv.attractloop = attractloop;

	// save name for levels that don't set message
	strcpy (sv.configstrings[CS_NAME], server);
	if (Cvar_VariableValue ("deathmatch"))
	{
		sprintf(sv.configstrings[CS_AIRACCEL], "%g", sv_airaccelerate->value);
		pm_airaccelerate = sv_airaccelerate->value;
	}
	else
	{
		strcpy(sv.configstrings[CS_AIRACCEL], "0");
		pm_airaccelerate = 0;
	}

	SZ_Init (&sv.multicast, sv.multicast_buf, sizeof(sv.multicast_buf));

	strcpy (sv.name, server);

	// leave slots at start for clients only
	for (i=0 ; i<maxclients->value ; i++)
	{
		// needs to reconnect
		if (svs.clients[i].state > cs_connected)
			svs.clients[i].state = cs_connected;
		svs.clients[i].lastframe = -1;
	}

	sv.time = 1000;
	
	strcpy (sv.name, server);
	strcpy (sv.configstrings[CS_NAME], server);

	if (serverstate != ss_game)
	{
		sv.models[1] = CM_LoadMap ("", false, &checksum);	// no real map
	}
	else
	{
		Com_sprintf (sv.configstrings[CS_MODELS+1],sizeof(sv.configstrings[CS_MODELS+1]),
			"maps/%s.bsp", server);
		sv.models[1] = CM_LoadMap (sv.configstrings[CS_MODELS+1], false, &checksum);
	}
	Com_sprintf (sv.configstrings[CS_MAPCHECKSUM],sizeof(sv.configstrings[CS_MAPCHECKSUM]),
		"%i", checksum);

	//
	// clear physics interaction links
	//
	SV_ClearWorld ();
	
	for (i=1 ; i< CM_NumInlineModels() ; i++)
	{
		Com_sprintf (sv.configstrings[CS_MODELS+1+i], sizeof(sv.configstrings[CS_MODELS+1+i]),
			"*%i", i);
		sv.models[i+1] = CM_InlineModel (sv.configstrings[CS_MODELS+1+i]);
	}

	//
	// spawn the rest of the entities on the map
	//	

	// precache and static commands can be issued during
	// map initialization
	sv.state = ss_loading;
	Com_SetServerState (sv.state);

	// load and spawn all other entities
//.........这里部分代码省略.........

/*
====================
CL_CgameSystemCalls

The cgame module is making a system call
====================
*/
intptr_t CL_CgameSystemCalls( intptr_t *args ) {
	switch( args[0] ) {
	case CG_PRINT:
		Com_Printf( "%s", (const char*)VMA(1) );
		return 0;
	case CG_ERROR:
		Com_Error( ERR_DROP, "%s", (const char*)VMA(1) );
		return 0;
	case CG_MILLISECONDS:
		return Sys_Milliseconds();
	case CG_CVAR_REGISTER:
		Cvar_Register( VMA(1), VMA(2), VMA(3), args[4] );
		return 0;
	case CG_CVAR_UPDATE:
		Cvar_Update( VMA(1) );
		return 0;
	case CG_CVAR_SET:
		Cvar_Set( VMA(1), VMA(2) );
		return 0;
	case CG_CVAR_VARIABLESTRINGBUFFER:
		Cvar_VariableStringBuffer( VMA(1), VMA(2), args[3] );
		return 0;
	case CG_ARGC:
		return Cmd_Argc();
	case CG_ARGV:
		Cmd_ArgvBuffer( args[1], VMA(2), args[3] );
		return 0;
	case CG_ARGS:
		Cmd_ArgsBuffer( VMA(1), args[2] );
		return 0;
	case CG_FS_FOPENFILE:
		return FS_FOpenFileByMode( VMA(1), VMA(2), args[3] );
	case CG_FS_READ:
		FS_Read2( VMA(1), args[2], args[3] );
		return 0;
	case CG_FS_WRITE:
		FS_Write( VMA(1), args[2], args[3] );
		return 0;
	case CG_FS_FCLOSEFILE:
		FS_FCloseFile( args[1] );
		return 0;
	case CG_FS_SEEK:
		return FS_Seek( args[1], args[2], args[3] );
	case CG_SENDCONSOLECOMMAND:
		Cbuf_AddText( VMA(1) );
		return 0;
	case CG_ADDCOMMAND:
		CL_AddCgameCommand( VMA(1) );
		return 0;
	case CG_REMOVECOMMAND:
		Cmd_RemoveCommand( VMA(1) );
		return 0;
	case CG_SENDCLIENTCOMMAND:
		CL_AddReliableCommand( VMA(1) );
		return 0;
	case CG_UPDATESCREEN:
		// this is used during lengthy level loading, so pump message loop
//		Com_EventLoop();	// FIXME: if a server restarts here, BAD THINGS HAPPEN!
// We can't call Com_EventLoop here, a restart will crash and this _does_ happen
// if there is a map change while we are downloading at pk3.
// ZOID
		SCR_UpdateScreen();
		return 0;
	case CG_CM_LOADMAP:
		CL_CM_LoadMap( VMA(1) );
		return 0;
	case CG_CM_NUMINLINEMODELS:
		return CM_NumInlineModels();
	case CG_CM_INLINEMODEL:
		return CM_InlineModel( args[1] );
	case CG_CM_TEMPBOXMODEL:
		return CM_TempBoxModel( VMA(1), VMA(2), /*int capsule*/ qfalse );
	case CG_CM_TEMPCAPSULEMODEL:
		return CM_TempBoxModel( VMA(1), VMA(2), /*int capsule*/ qtrue );
	case CG_CM_POINTCONTENTS:
		return CM_PointContents( VMA(1), args[2] );
	case CG_CM_TRANSFORMEDPOINTCONTENTS:
		return CM_TransformedPointContents( VMA(1), args[2], VMA(3), VMA(4) );
	case CG_CM_BOXTRACE:
		CM_BoxTrace( VMA(1), VMA(2), VMA(3), VMA(4), VMA(5), args[6], args[7], /*int capsule*/ qfalse );
		return 0;
	case CG_CM_CAPSULETRACE:
		CM_BoxTrace( VMA(1), VMA(2), VMA(3), VMA(4), VMA(5), args[6], args[7], /*int capsule*/ qtrue );
		return 0;
	case CG_CM_TRANSFORMEDBOXTRACE:
		CM_TransformedBoxTrace( VMA(1), VMA(2), VMA(3), VMA(4), VMA(5), args[6], args[7], VMA(8), VMA(9), /*int capsule*/ qfalse );
		return 0;
	case CG_CM_TRANSFORMEDCAPSULETRACE:
		CM_TransformedBoxTrace( VMA(1), VMA(2), VMA(3), VMA(4), VMA(5), args[6], args[7], VMA(8), VMA(9), /*int capsule*/ qtrue );
		return 0;
	case CG_CM_MARKFRAGMENTS:
		return re.MarkFragments( args[1], VMA(2), VMA(3), args[4], VMA(5), args[6], VMA(7) );
	case CG_S_STARTSOUND:
//.........这里部分代码省略.........

/**
 * @brief The ui module is making a system call
 * @param[in] args
 * @return
 */
intptr_t CL_UISystemCalls(intptr_t *args)
{
    switch (args[0])
    {
    case UI_ERROR:
        Com_Error(ERR_DROP, "%s", (char *)VMA(1));
    case UI_PRINT:
        Com_Printf("%s", (char *)VMA(1));
        return 0;
    case UI_MILLISECONDS:
        return Sys_Milliseconds();
    case UI_CVAR_REGISTER:
        Cvar_Register(VMA(1), VMA(2), VMA(3), args[4]);
        return 0;
    case UI_CVAR_UPDATE:
        Cvar_Update(VMA(1));
        return 0;
    case UI_CVAR_SET:
        Cvar_SetSafe(VMA(1), VMA(2));
        return 0;
    case UI_CVAR_VARIABLEVALUE:
        return FloatAsInt(Cvar_VariableValue(VMA(1)));
    case UI_CVAR_VARIABLESTRINGBUFFER:
        Cvar_VariableStringBuffer(VMA(1), VMA(2), args[3]);
        return 0;
    case UI_CVAR_LATCHEDVARIABLESTRINGBUFFER:
        Cvar_LatchedVariableStringBuffer(VMA(1), VMA(2), args[3]);
        return 0;
    case UI_CVAR_SETVALUE:
        Cvar_SetValueSafe(VMA(1), VMF(2));
        return 0;
    case UI_CVAR_RESET:
        Cvar_Reset(VMA(1));
        return 0;
    case UI_CVAR_CREATE:
        Cvar_Register(NULL, VMA(1), VMA(2), args[3]);
        return 0;
    case UI_CVAR_INFOSTRINGBUFFER:
        Cvar_InfoStringBuffer(args[1], VMA(2), args[3]);
        return 0;
    case UI_ARGC:
        return Cmd_Argc();
    case UI_ARGV:
        Cmd_ArgvBuffer(args[1], VMA(2), args[3]);
        return 0;
    case UI_CMD_EXECUTETEXT:
        if (args[1] == EXEC_NOW
                && (!strncmp(VMA(2), "snd_restart", 11)
                    || !strncmp(VMA(2), "vid_restart", 11)
                    || !strncmp(VMA(2), "quit", 5)))
        {
            Com_Printf(S_COLOR_YELLOW "turning EXEC_NOW '%.11s' into EXEC_INSERT\n", (const char *)VMA(2));
            args[1] = EXEC_INSERT;
        }
        Cbuf_ExecuteText(args[1], VMA(2));
        return 0;
    case UI_ADDCOMMAND:
        Cmd_AddCommand(VMA(1));
        return 0;
    case UI_FS_FOPENFILE:
        return FS_FOpenFileByMode(VMA(1), VMA(2), (fsMode_t)args[3]);
    case UI_FS_READ:
        FS_Read(VMA(1), args[2], args[3]);
        return 0;
    case UI_FS_WRITE:
        FS_Write(VMA(1), args[2], args[3]);
        return 0;
    case UI_FS_FCLOSEFILE:
        FS_FCloseFile(args[1]);
        return 0;
    case UI_FS_DELETEFILE:
        return FS_Delete(VMA(1));
    case UI_FS_GETFILELIST:
        return FS_GetFileList(VMA(1), VMA(2), VMA(3), args[4]);
    case UI_R_REGISTERMODEL:
        return re.RegisterModel(VMA(1));
    case UI_R_REGISTERSKIN:
        return re.RegisterSkin(VMA(1));
    case UI_R_REGISTERSHADERNOMIP:
        return re.RegisterShaderNoMip(VMA(1));
    case UI_R_CLEARSCENE:
        re.ClearScene();
        return 0;
    case UI_R_ADDREFENTITYTOSCENE:
        re.AddRefEntityToScene(VMA(1));
        return 0;
    case UI_R_ADDPOLYTOSCENE:
        re.AddPolyToScene(args[1], args[2], VMA(3));
        return 0;
    case UI_R_ADDPOLYSTOSCENE:
        re.AddPolysToScene(args[1], args[2], VMA(3), args[4]);
        return 0;
    case UI_R_ADDLIGHTTOSCENE:
        // new dlight code
        re.AddLightToScene(VMA(1), VMF(2), VMF(3), VMF(4), VMF(5), VMF(6), args[7], args[8]);
//.........这里部分代码省略.........

/*
=================
S_CodecUtilClose
=================
*/
void S_CodecUtilClose(snd_stream_t *stream)
{
	FS_FCloseFile(stream->file);
	Z_Free(stream);
}

//.........这里部分代码省略.........
									"The Team Arena mission pack can be found in your local game store.", cl->downloadName);
				}
				else
				{
					Com_sprintf(errorMessage, sizeof(errorMessage), "Cannot autodownload id pk3 file \"%s\"", cl->downloadName);
				}
			}
			else if ( !sv_allowDownload->integer ) {
				Com_Printf("clientDownload: %d : \"%s\" download disabled\n", (int) (cl - svs.clients), cl->downloadName);
				if (sv_pure->integer) {
					Com_sprintf(errorMessage, sizeof(errorMessage), "Could not download \"%s\" because autodownloading is disabled on the server.\n\n"
										"You will need to get this file elsewhere before you "
										"can connect to this pure server.\n", cl->downloadName);
				} else {
					Com_sprintf(errorMessage, sizeof(errorMessage), "Could not download \"%s\" because autodownloading is disabled on the server.\n\n"
                    "The server you are connecting to is not a pure server, "
                    "set autodownload to No in your settings and you might be "
                    "able to join the game anyway.\n", cl->downloadName);
				}
			} else {
        // NOTE TTimo this is NOT supposed to happen unless bug in our filesystem scheme?
        //   if the pk3 is referenced, it must have been found somewhere in the filesystem
				Com_Printf("clientDownload: %d : \"%s\" file not found on server\n", (int) (cl - svs.clients), cl->downloadName);
				Com_sprintf(errorMessage, sizeof(errorMessage), "File \"%s\" not found on server for autodownloading.\n", cl->downloadName);
			}
			MSG_WriteByte( msg, svc_download );
			MSG_WriteShort( msg, 0 ); // client is expecting block zero
			MSG_WriteLong( msg, -1 ); // illegal file size
			MSG_WriteString( msg, errorMessage );

			*cl->downloadName = 0;

			if(cl->download)
				FS_FCloseFile(cl->download);

			return;
		}

		Com_Printf( "clientDownload: %d : beginning \"%s\"\n", (int) (cl - svs.clients), cl->downloadName );

		// Init
		cl->downloadCurrentBlock = cl->downloadClientBlock = cl->downloadXmitBlock = 0;
		cl->downloadCount = 0;
		cl->downloadEOF = qfalse;
	}

	// Perform any reads that we need to
	while (cl->downloadCurrentBlock - cl->downloadClientBlock < MAX_DOWNLOAD_WINDOW &&
		cl->downloadSize != cl->downloadCount) {

		curindex = (cl->downloadCurrentBlock % MAX_DOWNLOAD_WINDOW);

		if (!cl->downloadBlocks[curindex])
			cl->downloadBlocks[curindex] = (unsigned char *)Z_Malloc( MAX_DOWNLOAD_BLKSIZE, TAG_DOWNLOAD, qtrue );

		cl->downloadBlockSize[curindex] = FS_Read( cl->downloadBlocks[curindex], MAX_DOWNLOAD_BLKSIZE, cl->download );

		if (cl->downloadBlockSize[curindex] < 0) {
			// EOF right now
			cl->downloadCount = cl->downloadSize;
			break;
		}

		cl->downloadCount += cl->downloadBlockSize[curindex];

		// Load in next block

//.........这里部分代码省略.........

			return;
		}
		else
		{
			// server keeps sending that message till we ack it, eat and ignore
			//MSG_ReadLong( msg );
			MSG_ReadString( msg );
			MSG_ReadLong( msg );
			MSG_ReadLong( msg );
			return;
		}
	}

	if ( !block )
	{
		// block zero is special, contains file size
		clc.downloadSize = MSG_ReadLong( msg );

        downloadLogger.Debug("Starting new direct download of size %i for '%s'", clc.downloadSize, cls.downloadTempName);
		Cvar_SetValue( "cl_downloadSize", clc.downloadSize );

		if ( clc.downloadSize < 0 )
		{
			Com_Error( ERR_DROP, "%s", MSG_ReadString( msg ) );
		}
	}

	size = MSG_ReadShort( msg );

	if ( size < 0 || size > (int) sizeof( data ) )
	{
		Com_Error( ERR_DROP, "CL_ParseDownload: Invalid size %d for download chunk.", size );
	}

    downloadLogger.Debug("Received block of size %i", size);

	MSG_ReadData( msg, data, size );

	if ( clc.downloadBlock != block )
	{
		downloadLogger.Debug( "CL_ParseDownload: Expected block %i, got %i", clc.downloadBlock, block );
		return;
	}

	// open the file if not opened yet
	if ( !clc.download )
	{
		clc.download = FS_SV_FOpenFileWrite( cls.downloadTempName );

		if ( !clc.download )
		{
			Com_Printf( "Could not create %s\n", cls.downloadTempName );
			CL_AddReliableCommand( "stopdl" );
			CL_NextDownload();
			return;
		}
	}

	if ( size )
	{
		FS_Write( data, size, clc.download );
	}

	CL_AddReliableCommand( va( "nextdl %d", clc.downloadBlock ) );
	clc.downloadBlock++;

	clc.downloadCount += size;

	// So UI gets access to it
	Cvar_SetValue( "cl_downloadCount", clc.downloadCount );

	if ( !size )
	{
        downloadLogger.Debug("Received EOF, closing '%s'", cls.downloadTempName);
		// A zero length block means EOF
		if ( clc.download )
		{
			FS_FCloseFile( clc.download );
			clc.download = 0;

			// rename the file
			FS_SV_Rename( cls.downloadTempName, cls.downloadName );
		}

		*cls.downloadTempName = *cls.downloadName = 0;
		Cvar_Set( "cl_downloadName", "" );

		// send intentions now
		// We need this because without it, we would hold the last nextdl and then start
		// loading right away.  If we take a while to load, the server is happily trying
		// to send us that last block over and over.
		// Write it twice to help make sure we acknowledge the download
		CL_WritePacket();
		CL_WritePacket();

		// get another file if needed
		CL_NextDownload();
	}
}

/**
 * @brief This updates the "hunkusage.dat" file with the current map and it's hunk usage count
 *
 * This is used for level loading, so we can show a percentage bar dependant on the amount
 * of hunk memory allocated so far
 *
 * This will be slightly inaccurate if some settings like sound quality are changed, but these
 * things should only account for a small variation (hopefully)
 */
void CL_UpdateLevelHunkUsage(void)
{
	int        handle;
	const char *memlistfile = "hunkusage.dat";
	char       outstr[256];
	int        len, memusage;

	memusage = Cvar_VariableIntegerValue("com_hunkused");

	len = FS_FOpenFileByMode(memlistfile, &handle, FS_READ);
	if (len >= 0)     // the file exists, so read it in, strip out the current entry for this map, and save it out, so we can append the new value
	{
		char *buftrav, *outbuftrav;
		char *outbuf;
		char *token;
		char *buf;

		buf = (char *)Z_Malloc(len + 1);
		Com_Memset(buf, 0, len + 1);
		outbuf = (char *)Z_Malloc(len + 1);
		Com_Memset(outbuf, 0, len + 1);

		(void) FS_Read((void *)buf, len, handle);
		FS_FCloseFile(handle);

		// now parse the file, filtering out the current map
		buftrav       = buf;
		outbuftrav    = outbuf;
		outbuftrav[0] = '\0';

		COM_BeginParseSession("CL_UpdateLevelHunkUsage");
		while ((token = COM_Parse(&buftrav)) != NULL && token[0])
		{
			if (!Q_stricmp(token, cl.mapname))
			{
				// found a match
				token = COM_Parse(&buftrav); // read the size
				if (token && token[0])
				{
					if (atoi(token) == memusage) // if it is the same, abort this process
					{
						Z_Free(buf);
						Z_Free(outbuf);
						return;
					}
				}
			}
			else // send it to the outbuf
			{
				Q_strcat(outbuftrav, len + 1, token);
				Q_strcat(outbuftrav, len + 1, " ");
				token = COM_Parse(&buftrav);    // read the size
				if (token && token[0])
				{
					Q_strcat(outbuftrav, len + 1, token);
					Q_strcat(outbuftrav, len + 1, "\n");
				}
				else
				{
					//Com_Error does memory clean up
					//Z_Free(buf);
					//Z_Free(outbuf);
					Com_Error(ERR_DROP, "hunkusage.dat file is corrupt");
				}
			}
		}

		handle = FS_FOpenFileWrite(memlistfile);
		if (handle < 0)
		{
			Com_Error(ERR_DROP, "cannot create %s", memlistfile);
		}
		// input file is parsed, now output to the new file
		len = strlen(outbuf);
		if (FS_Write((void *)outbuf, len, handle) != len)
		{
			Com_Error(ERR_DROP, "cannot write to %s", memlistfile);
		}
		FS_FCloseFile(handle);

		Z_Free(buf);
		Z_Free(outbuf);
	}
	// now append the current map to the current file
	(void) FS_FOpenFileByMode(memlistfile, &handle, FS_APPEND);
	if (handle < 0)
	{
		Com_Error(ERR_DROP, "cannot write to hunkusage.dat, check disk full");
	}
	Com_sprintf(outstr, sizeof(outstr), "%s %i\n", cl.mapname, memusage);
	(void) FS_Write(outstr, strlen(outstr), handle);
//.........这里部分代码省略.........

/*
======================
S_StartBackgroundTrack
======================
*/
void S_StartBackgroundTrack( const char *intro, const char *loop )
{
    int		len;
    char	dump[16];
    char	name[MAX_QPATH];

    if ( !intro )
    {
        intro = "";
    }
    if ( !loop || !loop[0] )
    {
        loop = intro;
    }
    Com_DPrintf( "S_StartBackgroundTrack( %s, %s )\n", intro, loop );

    Q_strncpyz( name, intro, sizeof( name ) - 4 );
    COM_DefaultExtension( name, sizeof( name ), ".wav" );

    if ( !intro[0] )
    {
        return;
    }

    Q_strncpyz( s_backgroundLoop, loop, sizeof( s_backgroundLoop ) );

    // close the background track, but DON'T reset s_rawend
    // if restarting the same back ground track
    if ( s_backgroundFile )
    {
        Sys_EndStreamedFile( s_backgroundFile );
        FS_FCloseFile( s_backgroundFile );
        s_backgroundFile = 0;
    }

    //
    // open up a wav file and get all the info
    //
    FS_FOpenFileRead( name, &s_backgroundFile, qtrue );
    if ( !s_backgroundFile )
    {
        Com_Printf( S_COLOR_YELLOW "WARNING: couldn't open music file %s\n", name );
        return;
    }

    // skip the riff wav header

    FS_Read(dump, 12, s_backgroundFile);

    if ( !S_FindWavChunk( s_backgroundFile, "fmt " ) )
    {
        Com_Printf( "No fmt chunk in %s\n", name );
        FS_FCloseFile( s_backgroundFile );
        s_backgroundFile = 0;
        return;
    }

    // save name for soundinfo
    s_backgroundInfo.format = FGetLittleShort( s_backgroundFile );
    s_backgroundInfo.channels = FGetLittleShort( s_backgroundFile );
    s_backgroundInfo.rate = FGetLittleLong( s_backgroundFile );
    FGetLittleLong(  s_backgroundFile );
    FGetLittleShort(  s_backgroundFile );
    s_backgroundInfo.width = FGetLittleShort( s_backgroundFile ) / 8;

    if ( s_backgroundInfo.format != WAV_FORMAT_PCM )
    {
        FS_FCloseFile( s_backgroundFile );
        s_backgroundFile = 0;
        Com_Printf("Not a microsoft PCM format wav: %s\n", name);
        return;
    }

    if ( s_backgroundInfo.channels != 2 || s_backgroundInfo.rate != 22050 )
    {
        Com_Printf(S_COLOR_YELLOW "WARNING: music file %s is not 22k stereo\n", name );
    }

    if ( ( len = S_FindWavChunk( s_backgroundFile, "data" ) ) == 0 )
    {
        FS_FCloseFile( s_backgroundFile );
        s_backgroundFile = 0;
        Com_Printf("No data chunk in %s\n", name);
        return;
    }

    s_backgroundInfo.samples = len / (s_backgroundInfo.width * s_backgroundInfo.channels);

    s_backgroundSamples = s_backgroundInfo.samples;

    //
    // start the background streaming
    //
    Sys_BeginStreamedFile( s_backgroundFile, 0x10000 );
}

/*
======================
S_UpdateBackgroundTrack
======================
*/
void S_UpdateBackgroundTrack( void )
{
    int		bufferSamples;
    int		fileSamples;
    byte	raw[30000];		// just enough to fit in a mac stack frame
    int		fileBytes;
    int		r;
    static	float	musicVolume = 0.5f;

    if ( !s_backgroundFile )
    {
        return;
    }

    // graeme see if this is OK
    musicVolume = (musicVolume + (s_musicVolume->value * 2))/4.0f;

    // don't bother playing anything if musicvolume is 0
    if ( musicVolume <= 0 )
    {
        return;
    }

    // see how many samples should be copied into the raw buffer
    if ( s_rawend < s_soundtime )
    {
        s_rawend = s_soundtime;
    }

    while ( s_rawend < s_soundtime + MAX_RAW_SAMPLES )
    {
        bufferSamples = MAX_RAW_SAMPLES - (s_rawend - s_soundtime);

        // decide how much data needs to be read from the file
        fileSamples = bufferSamples * s_backgroundInfo.rate / dma.speed;

        // don't try and read past the end of the file
        if ( fileSamples > s_backgroundSamples )
        {
            fileSamples = s_backgroundSamples;
        }

        // our max buffer size
        fileBytes = fileSamples * (s_backgroundInfo.width * s_backgroundInfo.channels);
        if ( fileBytes > sizeof(raw) )
        {
            fileBytes = sizeof(raw);
            fileSamples = fileBytes / (s_backgroundInfo.width * s_backgroundInfo.channels);
        }

        r = Sys_StreamedRead( raw, 1, fileBytes, s_backgroundFile );
        if ( r != fileBytes )
        {
            Com_Printf("StreamedRead failure on music track\n");
            S_StopBackgroundTrack();
            return;
        }

        // byte swap if needed
        S_ByteSwapRawSamples( fileSamples, s_backgroundInfo.width, s_backgroundInfo.channels, raw );

        // add to raw buffer
        S_RawSamples( fileSamples, s_backgroundInfo.rate,
                      s_backgroundInfo.width, s_backgroundInfo.channels, raw, musicVolume );

        s_backgroundSamples -= fileSamples;
        if ( !s_backgroundSamples )
        {
            // loop
            if (s_backgroundLoop[0])
            {
                Sys_EndStreamedFile( s_backgroundFile );
                FS_FCloseFile( s_backgroundFile );
                s_backgroundFile = 0;
                S_StartBackgroundTrack( s_backgroundLoop, s_backgroundLoop );
                if ( !s_backgroundFile )
                {
                    return;		// loop failed to restart
                }
            }
            else
            {
                s_backgroundFile = 0;
                return;
            }
        }
    }
}

static mufont_t *SCR_LoadMUFont( const char *name, size_t len )
{
	size_t filename_size;
	char *filename;
	qbyte *buf;
	char *ptr, *token, *start;
	int filenum;
	int length;
	mufont_t *font;
	struct shader_s *shader;
	int numchar;
	int x, y, w, h;

	filename_size = strlen( "fonts/" ) + len + strlen( ".tga" ) + 1;
	filename = Mem_TempMalloc( filename_size );
	Q_snprintfz( filename, filename_size, "fonts/%s", name );

	// load the shader
	COM_ReplaceExtension( filename, ".tga", filename_size );

	shader = R_RegisterPic( filename );
	if( !shader )
	{
		Mem_TempFree( filename );
		return NULL;
	}

	// load the font description
	COM_ReplaceExtension( filename, ".wfd", filename_size );

	// load the file
	length = FS_FOpenFile( filename, &filenum, FS_READ );
	if( length == -1 )
	{
		Mem_TempFree( filename );
		return NULL;
	}

	Mem_TempFree( filename );

	buf = Mem_TempMalloc( length + 1 );
	length = FS_Read( buf, length, filenum );
	FS_FCloseFile( filenum );
	if( !length )
	{
		Mem_TempFree( buf );
		return NULL;
	}

	// seems to be valid. Allocate it
	font = (mufont_t *)Font_Alloc( sizeof( mufont_t ) );
	font->shader = shader;
	font->name = Font_Alloc( len + 1 );
	Q_strncpyz( font->name, name, len + 1 );

	// proceed
	ptr = ( char * )buf;

	// get texture width and height
	token = COM_Parse( &ptr );
	if( !token[0] )
		goto error;
	font->imagewidth = atoi( token );

	token = COM_Parse( &ptr );
	if( !token[0] )
		goto error;
	font->imageheight = atoi( token );

	font->numchars = MIN_FONT_CHARS;

	// get the number of chars
	start = ptr;
	while( ptr )
	{
		// "<char>" "<x>" "<y>" "<width>" "<height>"
		token = COM_Parse( &ptr );
		if( !token[0] )
			break;
		numchar = atoi( token );
		if( numchar <= 0 )
			break;

		x = atoi( COM_Parse( &ptr ) ), y = atoi( COM_Parse( &ptr ) );
		w = atoi( COM_Parse( &ptr ) ), h = atoi( COM_Parse( &ptr ) );

		if( numchar < 32 || numchar >= MAX_FONT_CHARS )
			continue;
		if( ( unsigned int )( numchar + 1 ) > font->numchars )
			font->numchars = ( unsigned int )numchar + 1;
	}

	if( !font->numchars )
		goto error;

	font->chars = Font_Alloc( font->numchars * sizeof( muchar_t ) );

	// get the chars
	ptr = start;
	while( ptr )
//.........这里部分代码省略.........

void DL_End( CURLcode res, CURLMcode resm )
{
	CURLMsg *msg;
	int msgs;

	if( dl_verbose->integer == 0 && dl_showprogress->integer == 2 && !curlm )
		Com_Printf( "\n" );
	
	if( curlm )
	{	
		// res = final download result
		while( ( msg = curl_multi_info_read( curlm, &msgs ) ) )
		{
			if( msg->msg != CURLMSG_DONE )
			{
				if( dl_error[0] == '\0' )
					Q_strncpyz( dl_error, "Download Interrupted.", sizeof(dl_error) );
			}
			else if( msg->easy_handle == curl )
			{
				if( msg->data.result != CURLE_OK );
					res = msg->data.result;
			}
			else
			{
				Com_Printf( "Invalid cURL handle.\n" );
			}
		}

		curl_multi_cleanup( curlm );
		curlm = NULL;		
	}

	if( curl )
	{
		curl_easy_cleanup( curl );
		curl = NULL;
	}

	// get possible error messages
	if( !*dl_error && res != CURLE_OK )
		Q_strncpyz( dl_error, curl_easy_strerror(res), sizeof(dl_error) );
	if( !*dl_error && resm != CURLM_OK )
		Q_strncpyz( dl_error, curl_multi_strerror(resm), sizeof(dl_error) );
	if( !*dl_error && !f )
		Q_strncpyz( dl_error, "File is not opened.", sizeof(dl_error) );

	if (f) {
		FS_FCloseFile(f);
		f = 0;
		if (!*dl_error) {	// download succeeded
			char dest[MAX_OSPATH];
			Com_Printf("Download complete, restarting filesystem.\n");
			Q_strncpyz(dest, path, strlen(path)-3);	// -4 +1 for the trailing \0
			Q_strcat(dest, sizeof(dest), ".pk3");
			if (!FS_FileExists(dest)) {
				FS_SV_Rename(path, dest);
				FS_Restart(clc.checksumFeed);
				if (dl_showmotd->integer && *motd) {
					Com_Printf("Server motd: %s\n", motd);
				}
			} else {
				// normally such errors should be caught upon starting the transfer. Anyway better do
				// it here again - the filesystem might have changed, plus this may help contain some
				// bugs / exploitable flaws in the code.
				Com_Printf("Failed to copy downloaded file to its location - file already exists.\n");
				FS_HomeRemove(path);
			}
		} else {
			FS_HomeRemove(path);
		}
	}

	Cvar_Set( "cl_downloadName", "" );  // hide the ui downloading screen
	Cvar_SetValue( "cl_downloadSize", 0 );
	Cvar_SetValue( "cl_downloadCount", 0 );
	Cvar_SetValue( "cl_downloadTime", 0 );
	Cvar_Set( "cl_downloadMotd", "" );

	if( *dl_error )
	{
		if( clc.state == CA_CONNECTED )
			Com_Error( ERR_DROP, "%s\n", dl_error ); // download error while connecting, can not continue loading
		else
			Com_Printf( "%s\n", dl_error ); // download error while in game, do not disconnect

		*dl_error = '\0';
	}
	else
	{
		if (strlen(Cvar_VariableString("cl_downloadDemo"))) {
			Cbuf_AddText( va("demo %s\n", Cvar_VariableString("cl_downloadDemo") ) );
		// download completed, request new gamestate to check possible new map if we are not already in game
		} else if( clc.state == CA_CONNECTED)
			CL_AddReliableCommand( "donedl", qfalse); // get new gamestate info from server
	}
}

/*
====================
CL_UISystemCalls

The ui module is making a system call
====================
*/
intptr_t CL_UISystemCalls( intptr_t *args ) {
	switch ( args[0] ) {
	case UI_ERROR:
		Com_Error( ERR_DROP, "%s", VMA( 1 ) );
		return 0;

	case UI_PRINT:
		Com_Printf( "%s", VMA( 1 ) );
		return 0;

	case UI_MILLISECONDS:
		return Sys_Milliseconds();

	case UI_CVAR_REGISTER:
		Cvar_Register( VMA( 1 ), VMA( 2 ), VMA( 3 ), args[4] );
		return 0;

	case UI_CVAR_UPDATE:
		Cvar_Update( VMA( 1 ) );
		return 0;

	case UI_CVAR_SET:
		Cvar_Set( VMA( 1 ), VMA( 2 ) );
		return 0;

	case UI_CVAR_VARIABLEVALUE:
		return FloatAsInt( Cvar_VariableValue( VMA( 1 ) ) );

	case UI_CVAR_VARIABLESTRINGBUFFER:
		Cvar_VariableStringBuffer( VMA( 1 ), VMA( 2 ), args[3] );
		return 0;

	case UI_CVAR_SETVALUE:
		Cvar_SetValue( VMA( 1 ), VMF( 2 ) );
		return 0;

	case UI_CVAR_RESET:
		Cvar_Reset( VMA( 1 ) );
		return 0;

	case UI_CVAR_CREATE:
		Cvar_Get( VMA( 1 ), VMA( 2 ), args[3] );
		return 0;

	case UI_CVAR_INFOSTRINGBUFFER:
		Cvar_InfoStringBuffer( args[1], VMA( 2 ), args[3] );
		return 0;

	case UI_ARGC:
		return Cmd_Argc();

	case UI_ARGV:
		Cmd_ArgvBuffer( args[1], VMA( 2 ), args[3] );
		return 0;

	case UI_CMD_EXECUTETEXT:
		Cbuf_ExecuteText( args[1], VMA( 2 ) );
		return 0;

	case UI_FS_FOPENFILE:
		return FS_FOpenFileByMode( VMA( 1 ), VMA( 2 ), args[3] );

	case UI_FS_READ:
		FS_Read( VMA( 1 ), args[2], args[3] );
		return 0;

	case UI_FS_WRITE:
		FS_Write( VMA( 1 ), args[2], args[3] );
		return 0;

	case UI_FS_FCLOSEFILE:
		FS_FCloseFile( args[1] );
		return 0;

	case UI_FS_DELETEFILE:
		return FS_Delete( VMA( 1 ) );

	case UI_FS_GETFILELIST:
		return FS_GetFileList( VMA( 1 ), VMA( 2 ), VMA( 3 ), args[4] );

	case UI_R_REGISTERMODEL:
		return re.RegisterModel( VMA( 1 ) );

	case UI_R_REGISTERSKIN:
		return re.RegisterSkin( VMA( 1 ) );

	case UI_R_REGISTERSHADERNOMIP:
		return re.RegisterShaderNoMip( VMA( 1 ) );

	case UI_R_CLEARSCENE:
		re.ClearScene();
		return 0;

//.........这里部分代码省略.........

static void logfile_write(print_type_t type, const char *s)
{
    char text[MAXPRINTMSG];
    char buf[MAX_QPATH];
    char *p, *maxp;
    size_t len;
    ssize_t ret;
    int c;

    if (logfile_prefix->string[0]) {
        p = strchr(logfile_prefix->string, '@');
        if (p) {
            // expand it in place, hacky
            switch (type) {
            case PRINT_TALK:      *p = 'T'; break;
            case PRINT_DEVELOPER: *p = 'D'; break;
            case PRINT_WARNING:   *p = 'W'; break;
            case PRINT_ERROR:     *p = 'E'; break;
            case PRINT_NOTICE:    *p = 'N'; break;
            default:              *p = 'A'; break;
            }
        }
        len = format_local_time(buf, sizeof(buf), logfile_prefix->string);
        if (p) {
            *p = '@';
        }
    } else {
        len = 0;
    }

    p = text;
    maxp = text + sizeof(text) - 1;
    while (*s) {
        if (com_logNewline) {
            if (len > 0 && p + len < maxp) {
                memcpy(p, buf, len);
                p += len;
            }
            com_logNewline = qfalse;
        }

        if (p == maxp) {
            break;
        }

        c = *s++;
        if (c == '\n') {
            com_logNewline = qtrue;
        } else {
            c = Q_charascii(c);
        }

        *p++ = c;
    }
    *p = 0;

    len = p - text;
    ret = FS_Write(text, len, com_logFile);
    if (ret != len) {
        // zero handle BEFORE doing anything else to avoid recursion
        qhandle_t tmp = com_logFile;
        com_logFile = 0;
        FS_FCloseFile(tmp);
        Com_EPrintf("Couldn't write console log: %s\n", Q_ErrorString(ret));
        Cvar_Set("logfile", "0");
    }
}