quakeforge-old/common/cvar.c

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/*
cvar.c - dynamic variable tracking
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Copyright (C) 1996-1997 Id Software, Inc.
Portions Copyright (C) 1999,2000 Nelson Rush.
Copyright (C) 1999,2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
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This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
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#include <zone.h>
#include <qtypes.h>
#include <qstructs.h>
#include <lib_replace.h>
#include <console.h>
#include <cmd.h>
#include <client.h>
#include <stdlib.h>
#if defined(UQUAKE) || defined(SERVERONLY)
#include <server.h>
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#endif
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#include <string.h>
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#if !defined(HAVE_SNPRINTF) && defined(HAVE__SNPRINTF)
# define snprintf _snprintf
#endif
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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 (!Q_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 = Q_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 (!Q_strncmp (partial,cvar->name, len))
return cvar->name;
return NULL;
}
#ifdef SERVERONLY
void SV_SendServerInfoChange(char *key, char *value);
#endif
/*
============
Cvar_Set
============
*/
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#if defined(QUAKEWORLD)
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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->flags&CVAR_ROM) return;
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#ifdef SERVERONLY
if (var->flags&CVAR_SERVERINFO)
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{
Info_SetValueForKey (svs.info, var_name, value, MAX_SERVERINFO_STRING);
SV_SendServerInfoChange(var_name, value);
// SV_BroadcastCommand ("fullserverinfo \"%s\"\n", svs.info);
}
#else
if (var->flags&CVAR_USERINFO)
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{
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));
}
}
#endif
Z_Free (var->string); // free the old value string
var->string = Z_Malloc (Q_strlen(value)+1);
Q_strcpy (var->string, value);
var->value = Q_atof (var->string);
}
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#elif defined(UQUAKE)
void Cvar_Set (char *var_name, char *value)
{
cvar_t *var;
qboolean changed;
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;
}
// Don't change if this is a CVAR_ROM
if(var->flags&CVAR_ROM) return;
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changed = Q_strcmp(var->string, value);
Z_Free (var->string); // free the old value string
var->string = Z_Malloc (Q_strlen(value)+1);
Q_strcpy (var->string, value);
var->value = Q_atof (var->string);
if (var->flags&CVAR_USERINFO && changed)
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{
if (sv.active)
SV_BroadcastPrintf ("\"%s\" changed to \"%s\"\n", var->name, var->string);
}
}
#endif
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/*
============
Cvar_Command
Handles variable inspection and changing from the console
============
*/
qboolean 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 (QFile *f)
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{
cvar_t *var;
for (var = cvar_vars ; var ; var = var->next)
if (var->flags&CVAR_ARCHIVE)
Qprintf (f, "%s \"%s\"\n", var->name, var->string);
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}
void Cvar_Set_f(void)
{
cvar_t *var;
char *value;
char *var_name;
if (Cmd_Argc() != 3)
{
Con_Printf ("usage: set <cvar> <value>\n");
return;
}
var_name = Cmd_Argv (1);
value = Cmd_Argv (2);
var = Cvar_FindVar (var_name);
if (var)
{
Cvar_Set (var->name, value);
}
else
{
var = Cvar_Get (var_name, value, CVAR_USER_CREATED|CVAR_HEAP,
"User created cvar");
}
}
void Cvar_Help_f (void)
{
char *cvar_name;
cvar_t *var;
if (Cmd_Argc() != 2)
{
Con_Printf ("usage: help <cvar>\n");
return;
}
cvar_name = Cmd_Argv (1);
if((var = Cvar_FindVar(cvar_name)) != NULL)
{
Con_Printf ("description: %s\nvalue: %s\n",var->description,
var->string);
return;
}
Con_Printf ("variable not found\n");
}
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void Cvar_CvarList_f (void)
{
cvar_t *var;
for (var = cvar_vars; var ; var = var->next)
{
Con_Printf("%s\n",var->name);
}
}
void Cvar_Init()
{
Cmd_AddCommand ("set", Cvar_Set_f);
Cmd_AddCommand ("help",Cvar_Help_f);
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Cmd_AddCommand ("cvarlist",Cvar_CvarList_f);
}
void Cvar_Shutdown (void)
{
cvar_t *var,*next;
var = cvar_vars;
while(var)
{
next = var->next;
free(var->description);
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Z_Free(var->string);
free(var->name);
free(var);
var = next;
}
}
cvar_t *Cvar_Get(char *name, char *string, int cvarflags, char *description)
{
cvar_t *v;
if (Cmd_Exists (name))
{
Con_Printf ("Cvar_Get: %s is a command\n",name);
return NULL;
}
v = Cvar_FindVar(name);
if (!v)
{
v = (cvar_t *) malloc(sizeof(cvar_t));
// Cvar doesn't exist, so we create it
v->next = cvar_vars;
cvar_vars = v;
v->name = strdup(name);
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v->string = Z_Malloc (Q_strlen(string)+1);
Q_strcpy (v->string, string);
v->flags = cvarflags;
v->description = strdup(description);
v->value = Q_atof (v->string);
return v;
}
// Cvar does exist, so we update the flags and return.
v->flags |= cvarflags;
v->flags ^= CVAR_USER_CREATED;
return v;
}