shithub: qk1

ref: db9b193ab08b9e033e80887e31ac7cca8203d906
dir: /qw/cvar.c/

// cvar.c -- dynamic variable tracking

#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "quakedef.h"

cvar_t	*cvar_vars;
char	*cvar_null_string = "";

/*
============
Cvar_FindVar
============
*/
cvar_t *Cvar_FindVar (char *var_name)
{
	cvar_t	*var;
	
	for (var=cvar_vars ; var ; var=var->next)
		if (!strcmp (var_name, var->name))
			return var;

	return NULL;
}

/*
============
Cvar_VariableValue
============
*/
float	Cvar_VariableValue (char *var_name)
{
	cvar_t	*var;
	
	var = Cvar_FindVar (var_name);
	if (!var)
		return 0;
	return Q_atof (var->string);
}


/*
============
Cvar_VariableString
============
*/
char *Cvar_VariableString (char *var_name)
{
	cvar_t *var;
	
	var = Cvar_FindVar (var_name);
	if (!var)
		return cvar_null_string;
	return var->string;
}


/*
============
Cvar_CompleteVariable
============
*/
char *Cvar_CompleteVariable (char *partial)
{
	cvar_t		*cvar;
	int			len;
	
	len = strlen(partial);
	
	if (!len)
		return NULL;
		
	// check exact match
	for (cvar=cvar_vars ; cvar ; cvar=cvar->next)
		if (!strcmp (partial,cvar->name))
			return cvar->name;

	// check partial match
	for (cvar=cvar_vars ; cvar ; cvar=cvar->next)
		if (!strncmp (partial,cvar->name, len))
			return cvar->name;

	return NULL;
}


/*
============
Cvar_Set
============
*/
void Cvar_Set (char *var_name, char *value)
{
	cvar_t	*var;
	
	var = Cvar_FindVar (var_name);
	if (!var)
	{	// there is an error in C code if this happens
		Con_Printf ("Cvar_Set: variable %s not found\n", var_name);
		return;
	}

	if(var->info){
		if(svonly){
			Info_SetValueForKey(svs.info, var_name, value, MAX_SERVERINFO_STRING);
			SV_SendServerInfoChange(var_name, value);
//			SV_BroadcastCommand("fullserverinfo \"%s\"\n", svs.info);
		}else{
			Info_SetValueForKey(cls.userinfo, var_name, value, MAX_INFO_STRING);
			if(cls.state >= ca_connected){
				MSG_WriteByte(&cls.netchan.message, clc_stringcmd);
				SZ_Print(&cls.netchan.message, va("setinfo \"%s\" \"%s\"\n", var_name, value));
			}
		}
	}
	
	Z_Free (var->string);	// free the old value string
	
	var->string = Z_Malloc (strlen(value)+1);
	strcpy (var->string, value);
	var->value = Q_atof (var->string);
}

/*
============
Cvar_SetValue
============
*/
void Cvar_SetValue (char *var_name, float value)
{
	char	val[32];
	
	sprintf (val, "%f",value);
	Cvar_Set (var_name, val);
}


/*
============
Cvar_RegisterVariable

Adds a freestanding variable to the variable list.
============
*/
void Cvar_RegisterVariable (cvar_t *variable)
{
	char	value[512];

// first check to see if it has allready been defined
	if (Cvar_FindVar (variable->name))
	{
		Con_Printf ("Can't register variable %s, allready defined\n", variable->name);
		return;
	}
	
// check for overlap with a command
	if (Cmd_Exists (variable->name))
	{
		Con_Printf ("Cvar_RegisterVariable: %s is a command\n", variable->name);
		return;
	}
		
// link the variable in
	variable->next = cvar_vars;
	cvar_vars = variable;

// copy the value off, because future sets will Z_Free it
	strcpy (value, variable->string);
	variable->string = Z_Malloc (1);	
	
// set it through the function to be consistant
	Cvar_Set (variable->name, value);
}

/*
============
Cvar_Command

Handles variable inspection and changing from the console
============
*/
bool	Cvar_Command (void)
{
	cvar_t			*v;

// check variables
	v = Cvar_FindVar (Cmd_Argv(0));
	if (!v)
		return false;
		
// perform a variable print or set
	if (Cmd_Argc() == 1)
	{
		Con_Printf ("\"%s\" is \"%s\"\n", v->name, v->string);
		return true;
	}

	Cvar_Set (v->name, Cmd_Argv(1));
	return true;
}


/*
============
Cvar_WriteVariables

Writes lines containing "set variable value" for all variables
with the archive flag set to true.
============
*/
void Cvar_WriteVariables (FILE *f)
{
	cvar_t	*var;
	
	for (var = cvar_vars ; var ; var = var->next)
		if (var->archive)
			fprintf (f, "%s \"%s\"\n", var->name, var->string);
}