C++ Cbuf_Execute函数代码示例

void Com_ExecuteCfg(void)
{
	Cbuf_ExecuteText(EXEC_NOW, "exec default.cfg\n");
	Cbuf_Execute(); // Always execute after exec to prevent text buffer overflowing

	if(!Com_SafeMode())
	{
		// skip the q3config.cfg and autoexec.cfg if "safe" is on the command line
		Cbuf_ExecuteText(EXEC_NOW, "exec " Q3CONFIG_NAME "\n");
		Cbuf_Execute();
		Cbuf_ExecuteText(EXEC_NOW, "exec autoexec_sp.cfg\n");
		Cbuf_Execute();
	}
}

void Sys_AddDefaultConfig(void)
{
    FILE *fp;
    struct stat st;
    size_t len, r;

    fp = fopen(SYS_SITE_CFG, "r");
    if (!fp) {
        return;
    }

    if (fstat(fileno(fp), &st) == 0) {
        len = st.st_size;
        if (len >= cmd_buffer.maxsize) {
            len = cmd_buffer.maxsize - 1;
        }

        r = fread(cmd_buffer.text, 1, len, fp);
        cmd_buffer.text[r] = 0;

        cmd_buffer.cursize = COM_Compress(cmd_buffer.text);
    }

    fclose(fp);

    if (cmd_buffer.cursize) {
        Com_Printf("Execing %s\n", SYS_SITE_CFG);
        Cbuf_Execute(&cmd_buffer);
    }
}

static void ControlsResetDefaultsFunc (void *unused)
{
	Cbuf_AddText ("exec default.cfg\n");
	Cbuf_Execute ();

	ControlsSetMenuItemValues ();
}

/*
==================
Host_Frame

Runs all active servers
==================
*/
void _Host_Frame (float time)
{
	if (setjmp (host_abortserver))
		return;			// something bad happened, or the server disconnected

// keep the random time dependent
	rand ();

// decide the simulation time
	if (!Host_FilterTime (time))
		return;			// don't run too fast, or packets will flood out

// get new key events
	Sys_SendKeyEvents ();

// process console commands
	Cbuf_Execute ();

	NET_Poll();

// check for commands typed to the host
	Host_GetConsoleCommands ();

	if (sv.active)
		Host_ServerFrame ();
}

/*
============
Cbuf_ExecuteText
============
*/
void Cbuf_ExecuteText(int exec_when, const char *text)
{
	switch (exec_when)
	{
	case EXEC_NOW:
		if (text && strlen(text) > 0)
		{
			Com_DPrintf(S_COLOR_YELLOW "EXEC_NOW %s\n", text);
			Cmd_ExecuteString(text);
		}
		else
		{
			Com_DPrintf(S_COLOR_YELLOW "EXEC_NOW %s\n", cmd_text.data);
			Cbuf_Execute();
		}
		break;
	case EXEC_INSERT:
		Cbuf_InsertText(text);
		break;
	case EXEC_APPEND:
		Cbuf_AddText(text);
		break;
	default:
		Com_Error(ERR_FATAL, "Cbuf_ExecuteText: bad exec_when");
	}
}

void CServerRemoteAccess::SetValue(const char *variable, const char *value)
{
	FileHandle_t f;
	struct cvar_s *var;

	if (!Q_stricmp(variable, "map"))
	{
		Cbuf_AddText("changelevel ");
		Cbuf_AddText((char*)value);
		Cbuf_AddText("\n");
		Cbuf_Execute();
	}
	else if (!Q_stricmp(variable, "mapcycle"))
	{
		f = FS_Open(mapcyclefile.string, "wt");
		if (!f)
		{
			Con_Printf("Couldn't write to read-only file %s, using file _dev_mapcycle.txt instead.\n", mapcyclefile.string);
			Cvar_DirectSet(&mapcyclefile, "_temp_mapcycle.txt");
			f = FS_Open(mapcyclefile.string, "wt");
		}

		if (f)
		{
			FS_Write(value, Q_strlen(value) + 1, 1, f);
			FS_Close(f);
		}
	}
	else
	{
		var = Cvar_FindVar(variable);
		if (var)
			Cvar_DirectSet(var, value);
	}
}

/**
 * @brief Console command to load a savegame
 * @sa SAV_GameLoad
 */
static void SAV_GameLoad_f (void)
{
	const char *error = NULL;

	/* get argument */
	if (Cmd_Argc() < 2) {
		Com_Printf("Usage: %s <filename>\n", Cmd_Argv(0));
		return;
	}

	/* Check if savegame exists */
	if (FS_CheckFile("save/%s.%s", Cmd_Argv(1), SAVEGAME_EXTENSION) <= 0) {
		Com_Printf("savegame file '%s' doesn't exist or an empty file\n", Cmd_Argv(1));
		return;
	}

	Com_DPrintf(DEBUG_CLIENT, "load file '%s'\n", Cmd_Argv(1));

	/* load and go to map */
	if (!SAV_GameLoad(Cmd_Argv(1), &error)) {
		Cbuf_Execute(); /* wipe outstanding campaign commands */
		cgi->UI_Popup(_("Error"), "%s\n%s", _("Error loading game."), error ? error : "");
		Cmd_ExecuteString("game_exit");
	}
}

/*
=================
Com_AddLateCommands

Adds command line parameters as script statements
Commands lead with a + and continue until another +

Returns qtrue if any late commands were added, which
will keep the demoloop from immediately starting

Assumes +set commands are already filtered out
=================
*/
static qboolean Com_AddLateCommands(void)
{
    int     i;
    char    *s;
    qboolean ret = qfalse;

    for (i = 1; i < com_argc; i++) {
        s = com_argv[i];
        if (!s) {
            continue;
        }
        if (*s == '+') {
            if (ret) {
                Cbuf_AddText(&cmd_buffer, "\n");
            }
            s++;
        } else if (ret) {
            Cbuf_AddText(&cmd_buffer, " ");
        }
        Cbuf_AddText(&cmd_buffer, s);
        ret = qtrue;
    }

    if (ret) {
        Cbuf_AddText(&cmd_buffer, "\n");
        Cbuf_Execute(&cmd_buffer);
    }

    return ret;
}

/*
====================
SV_Init
====================
*/
void SV_Init (void)
{
	Sys_Printf ("Host_Init\n");

	Memory_Init (host_parms->membase, host_parms->memsize);
	Cbuf_Init ();
	Cmd_Init ();

	COM_Init ();
	FS_Init ();

	PR_Init ();
	Mod_Init ();

	SV_InitNet ();

	SV_InitLocal ();
	Pmove_Init ();

	Hunk_AllocName (0, "-HOST_HUNKLEVEL-");
	host_hunklevel = Hunk_LowMark ();

	Cbuf_InsertText ("exec server.cfg\n");
	Cbuf_Execute ();
	// unlock the early-set cvars after init
	Cvar_UnlockAll ();

	host_initialized = true;

	Con_Printf ("Exe: "__TIME__" "__DATE__"\n");
	Con_Printf ("%4.1f megabyte heap\n", host_parms->memsize/(1024*1024.0));
	Con_Printf ("======== HexenWorld Initialized ========\n");

	// process command line arguments
	Cmd_StuffCmds_f ();
	Cbuf_Execute ();

	// if a map wasn't specified on the command line, spawn demo1.map
	if (sv.state == ss_dead)
		Cmd_ExecuteString ("map demo1", src_command);
	if (sv.state == ss_dead)
		SV_Error ("Couldn't spawn a server");
}

/*
==================
SV_Frame

==================
*/
void SV_Frame (float time)
{
	static double	start, end;

	start = Sys_DoubleTime ();
	svs.stats.idle += start - end;

// keep the random time dependent
	rand ();

// decide the simulation time
	realtime += time;
	sv.time += time;

// check timeouts
	SV_CheckTimeouts ();

// toggle the log buffer if full
	SV_CheckLog ();

// move autonomous things around if enough time has passed
	SV_Physics ();

// get packets
	SV_ReadPackets ();

// check for commands typed to the host
	SV_GetConsoleCommands ();

// process console commands
	Cbuf_Execute ();

	SV_CheckVars ();

// send messages back to the clients that had packets read this frame
	SV_SendClientMessages ();

// send a heartbeat to the master if needed
	Master_Heartbeat ();

// collect timing statistics
	end = Sys_DoubleTime ();
	svs.stats.active += end-start;
	if (++svs.stats.count == STATFRAMES)
	{
		svs.stats.latched_active = svs.stats.active;
		svs.stats.latched_idle = svs.stats.idle;
		svs.stats.latched_packets = svs.stats.packets;
		svs.stats.active = 0;
		svs.stats.idle = 0;
		svs.stats.packets = 0;
		svs.stats.count = 0;
	}
}

void Com_AddConfigFile(const char *name, unsigned flags)
{
    qerror_t ret;

    ret = Cmd_ExecuteFile(name, flags);
    if (ret == Q_ERR_SUCCESS) {
        Cbuf_Execute(&cmd_buffer);
    } else if (ret != Q_ERR_NOENT) {
        Com_WPrintf("Couldn't exec %s: %s\n", name, Q_ErrorString(ret));
    }
}

void Host_Quit (void)
{
	// execute user's trigger
	TP_ExecTrigger ("f_exit");
	Cbuf_Execute();
	
	// save config (conditional)
	Config_QuitSave();

	// turn off
	Host_Shutdown ();
	Sys_Quit ();
}

//-----------------------------------------------------------------------------
// Purpose: Sets a cvar or value
//-----------------------------------------------------------------------------
void CServerRemoteAccess::SetValue(const char *variable, const char *value)
{
	// check for special types
	if (!stricmp(variable, "map"))
	{
		// push a map change command
		Cbuf_AddText( va( "changelevel %s\n", value ) );
		Cbuf_Execute();
	}
	else if (!stricmp(variable, "mapcycle"))
	{
		// write out a new mapcycle file
		ConVarRef mapcycle( "mapcyclefile" );
		if ( mapcycle.IsValid() )
		{
			FileHandle_t f = g_pFileSystem->Open(mapcycle.GetString(), "wt");
			if (!f)
			{
				// mapcycle file probably read only, fall pack to temporary file
				Msg("Couldn't write to read-only file %s, using file _temp_mapcycle.txt instead.\n", mapcycle.GetString());
				mapcycle.SetValue("_temp_mapcycle.txt" );
				f = g_pFileSystem->Open(mapcycle.GetString(), "wt");
				if (!f)
				{
					return;
				}
			}
			g_pFileSystem->Write(value, Q_strlen(value) + 1, f);
			g_pFileSystem->Close(f);
		}
	}
	else
	{
		// Stick the cvar set in the command string, so client notification, replication, etc happens
		Cbuf_AddText( va("%s %s", variable, value) );
		Cbuf_AddText("\n");
		Cbuf_Execute();
	}
}

/*
* CL_UserInputFrame
*/
void CL_UserInputFrame( void )
{
	// let the mouse activate or deactivate
	IN_Frame();

	// get new key events
	Sys_SendKeyEvents();

	// get new key events from mice or external controllers
	IN_Commands();

	// process console commands
	Cbuf_Execute();
}

/*
==================
CL_NextDemo

Called when a demo or cinematic finishes
If the "nextdemo" cvar is set, that command will be issued
==================
*/
void CL_NextDemo( void ) {
	char	v[MAX_STRING_CHARS];

	Q_strncpyz( v, Cvar_VariableString ("nextdemo"), sizeof(v) );
	v[MAX_STRING_CHARS-1] = 0;
	Com_DPrintf("CL_NextDemo: %s\n", v );
	if (!v[0]) {
		return;
	}

	Cvar_Set ("nextdemo","");
	Cbuf_AddText (v);
	Cbuf_AddText ("\n");
	Cbuf_Execute();
}