mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-14 17:01:22 +00:00
727 lines
15 KiB
C
727 lines
15 KiB
C
/*
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cvar.c
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dynamic variable tracking
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 1999,2000 contributors of the QuakeForge project
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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
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static __attribute__ ((used)) const char rcsid[] =
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"$Id$";
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include "QF/cmd.h"
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#include "QF/cvar.h"
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#include "QF/hash.h"
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#include "QF/mathlib.h"
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#include "QF/qargs.h"
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#include "QF/quakefs.h"
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#include "QF/sys.h"
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#include "QF/va.h"
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#include "compat.h"
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#define USER_RO_CVAR "User-created READ-ONLY Cvar"
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#define USER_CVAR "User-created cvar"
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VISIBLE cvar_t *developer;
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VISIBLE cvar_t *cvar_vars;
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static const char *cvar_null_string = "";
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static cvar_alias_t *calias_vars;
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static hashtab_t *cvar_hash;
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static hashtab_t *calias_hash;
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VISIBLE cvar_t *
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Cvar_FindVar (const char *var_name)
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{
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return (cvar_t*) Hash_Find (cvar_hash, var_name);
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}
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VISIBLE cvar_t *
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Cvar_FindAlias (const char *alias_name)
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{
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cvar_alias_t *alias;
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alias = (cvar_alias_t *) Hash_Find (calias_hash, alias_name);
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if (alias)
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return alias->cvar;
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return 0;
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}
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cvar_t *
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Cvar_MakeAlias (const char *name, cvar_t *cvar)
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{
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cvar_alias_t *alias;
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cvar_t *var;
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if (Cmd_Exists (name)) {
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Sys_Printf ("Cvar_MakeAlias: %s is a command\n", name);
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return 0;
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}
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if (Cvar_FindVar (name)) {
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Sys_Printf ("Cvar_MakeAlias: %s is a cvar\n",
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name);
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return 0;
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}
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var = Cvar_FindAlias (name);
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if (var && var != cvar) {
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Sys_Printf ("Cvar_MakeAlias: %s is an alias to %s\n",
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name, var->name);
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return 0;
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}
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if (!var) {
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alias = (cvar_alias_t *) calloc (1, sizeof (cvar_alias_t));
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alias->next = calias_vars;
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calias_vars = alias;
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alias->name = strdup (name);
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alias->cvar = cvar;
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Hash_Add (calias_hash, alias);
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}
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return cvar;
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}
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cvar_t *
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Cvar_RemoveAlias (const char *name)
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{
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cvar_alias_t *alias;
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cvar_t *var;
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alias = (cvar_alias_t *) Hash_Find (calias_hash, name);
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if (!alias) {
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Sys_Printf ("Cvar_RemoveAlias: %s is not an alias\n", name);
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return 0;
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}
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var = alias->cvar;
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Hash_Free (calias_hash, Hash_Del (calias_hash, name));
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return var;
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}
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VISIBLE float
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Cvar_VariableValue (const char *var_name)
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{
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cvar_t *var;
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var = Cvar_FindVar (var_name);
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if (!var)
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var = Cvar_FindAlias (var_name);
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if (!var)
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return 0;
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return atof (var->string);
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}
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VISIBLE const char *
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Cvar_VariableString (const char *var_name)
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{
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cvar_t *var;
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var = Cvar_FindVar (var_name);
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if (!var)
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var = Cvar_FindAlias (var_name);
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if (!var)
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return cvar_null_string;
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return var->string;
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}
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VISIBLE const char *
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Cvar_CompleteVariable (const char *partial)
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{
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cvar_t *cvar;
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cvar_alias_t *alias;
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int len;
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len = strlen (partial);
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if (!len)
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return NULL;
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// check exact match
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for (cvar = cvar_vars; cvar; cvar = cvar->next)
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if (!strcmp (partial, cvar->name))
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return cvar->name;
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// check aliases too :)
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for (alias = calias_vars; alias; alias = alias->next)
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if (!strcmp (partial, alias->name))
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return alias->name;
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// check partial match
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for (cvar = cvar_vars; cvar; cvar = cvar->next)
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if (!strncmp (partial, cvar->name, len))
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return cvar->name;
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// check aliases too :)
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for (alias = calias_vars; alias; alias = alias->next)
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if (!strncmp (partial, alias->name, len))
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return alias->name;
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return NULL;
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}
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/*
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CVar_CompleteCountPossible
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New function for tab-completion system
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Added by EvilTypeGuy
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Thanks to Fett erich@heintz.com
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*/
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VISIBLE int
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Cvar_CompleteCountPossible (const char *partial)
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{
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cvar_t *cvar;
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int len;
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int h;
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h = 0;
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len = strlen(partial);
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if (!len)
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return 0;
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// Loop through the cvars and count all possible matches
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for (cvar = cvar_vars; cvar; cvar = cvar->next)
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if (!strncmp(partial, cvar->name, len))
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h++;
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return h;
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}
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/*
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CVar_CompleteBuildList
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New function for tab-completion system
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Added by EvilTypeGuy
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Thanks to Fett erich@heintz.com
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Thanks to taniwha
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*/
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VISIBLE const char **
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Cvar_CompleteBuildList (const char *partial)
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{
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cvar_t *cvar;
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int len = 0;
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int bpos = 0;
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int sizeofbuf = (Cvar_CompleteCountPossible (partial) + 1) *
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sizeof (char *);
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const char **buf;
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len = strlen(partial);
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buf = malloc(sizeofbuf + sizeof (char *));
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SYS_CHECKMEM (buf);
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// Loop through the alias list and print all matches
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for (cvar = cvar_vars; cvar; cvar = cvar->next)
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if (!strncmp(partial, cvar->name, len))
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buf[bpos++] = cvar->name;
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buf[bpos] = NULL;
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return buf;
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}
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VISIBLE void
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Cvar_Set (cvar_t *var, const char *value)
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{
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int changed;
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int vals;
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if (!var)
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return;
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if (var->flags & CVAR_ROM) {
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Sys_MaskPrintf (SYS_DEV, "Cvar \"%s\" is read-only, cannot modify\n",
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var->name);
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return;
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}
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changed = !strequal (var->string, value);
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free ((char*)var->string); // free the old value string
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var->string = strdup (value);
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var->value = atof (var->string);
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var->int_val = atoi (var->string);
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VectorZero (var->vec);
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vals = sscanf (var->string, "%f %f %f",
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&var->vec[0], &var->vec[1], &var->vec[2]);
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if (vals == 1)
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var->vec[2] = var->vec[1] = var->vec[0];
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if (changed && var->callback)
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var->callback (var);
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}
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/*
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Cvar_SetROM
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doesn't check for CVAR_ROM flag
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*/
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void
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Cvar_SetROM (cvar_t *var, const char *value)
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{
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int changed;
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if (!var)
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return;
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changed = !strequal (var->string, value);
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free ((char*)var->string); // free the old value string
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var->string = strdup (value);
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var->value = atof (var->string);
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var->int_val = atoi (var->string);
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sscanf (var->string, "%f %f %f", &var->vec[0], &var->vec[1], &var->vec[2]);
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if (changed && var->callback)
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var->callback (var);
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}
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VISIBLE void
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Cvar_SetValue (cvar_t *var, float value)
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{
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Cvar_Set (var, va ("%g", value));
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}
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/*
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Cvar_Command
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Handles variable inspection and changing from the console
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*/
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VISIBLE qboolean
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Cvar_Command (void)
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{
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cvar_t *v;
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// check variables
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v = Cvar_FindVar (Cmd_Argv (0));
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if (!v)
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v = Cvar_FindAlias (Cmd_Argv (0));
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if (!v)
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return false;
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// perform a variable print or set
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if (Cmd_Argc () == 1) {
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Sys_Printf ("\"%s\" is \"%s\"\n", v->name, v->string);
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return true;
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}
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Cvar_Set (v, Cmd_Argv (1));
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return true;
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}
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/*
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Cvar_WriteVariables
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Writes lines containing "seta variable value" for all variables
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with the archive flag set to true.
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*/
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VISIBLE void
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Cvar_WriteVariables (QFile *f)
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{
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cvar_t *var;
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for (var = cvar_vars; var; var = var->next)
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if (var->flags & CVAR_ARCHIVE)
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Qprintf (f, "seta %s \"%s\"\n", var->name, var->string);
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}
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static void
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set_cvar (const char *cmd, int orflags)
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{
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cvar_t *var;
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const char *value;
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const char *var_name;
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if (Cmd_Argc () != 3) {
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Sys_Printf ("usage: %s <cvar> <value>\n", cmd);
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return;
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}
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var_name = Cmd_Argv (1);
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value = Cmd_Argv (2);
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var = Cvar_FindVar (var_name);
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if (!var)
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var = Cvar_FindAlias (var_name);
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if (var) {
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if (var->flags & CVAR_ROM) {
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Sys_MaskPrintf (SYS_DEV,
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"Cvar \"%s\" is read-only, cannot modify\n",
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var_name);
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} else {
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Cvar_Set (var, value);
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Cvar_SetFlags (var, var->flags | orflags);
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}
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} else {
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var = Cvar_Get (var_name, value, CVAR_USER_CREATED | orflags, NULL,
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USER_CVAR);
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}
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}
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static void
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Cvar_Set_f (void)
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{
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set_cvar ("set", CVAR_NONE);
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}
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static void
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Cvar_Setrom_f (void)
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{
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set_cvar ("setrom", CVAR_ROM);
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}
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static void
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Cvar_Seta_f (void)
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{
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set_cvar ("seta", CVAR_ARCHIVE);
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}
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static void
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Cvar_Inc_f (void)
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{
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cvar_t *var;
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float inc = 1;
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const char *name;
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switch (Cmd_Argc ()) {
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default:
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case 1:
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Sys_Printf ("inc <cvar> [amount] : increment cvar\n");
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return;
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case 3:
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inc = atof (Cmd_Argv (2));
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case 2:
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name = Cmd_Argv (1);
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var = Cvar_FindVar (name);
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if (!var)
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var = Cvar_FindAlias (name);
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if (!var)
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Sys_Printf ("Unknown variable \"%s\"\n", name);
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break;
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}
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Cvar_SetValue (var, var->value + inc);
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}
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static void
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Cvar_Toggle_f (void)
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{
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cvar_t *var;
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if (Cmd_Argc () != 2) {
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Sys_Printf ("toggle <cvar> : toggle a cvar on/off\n");
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return;
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}
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var = Cvar_FindVar (Cmd_Argv (1));
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if (!var)
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var = Cvar_FindAlias (Cmd_Argv (1));
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if (!var) {
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Sys_Printf ("Unknown variable \"%s\"\n", Cmd_Argv (1));
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return;
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}
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Cvar_Set (var, var->int_val ? "0" : "1");
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}
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static void
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Cvar_Cycle_f (void)
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{
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int i;
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const char *name;
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cvar_t *var;
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if (Cmd_Argc () < 3) {
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Sys_Printf ("cycle <cvar> <value list>: cycle cvar through a list of "
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"values\n");
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return;
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}
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name = Cmd_Argv (1);
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var = Cvar_FindVar (name);
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if (!var)
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var = Cvar_FindAlias (name);
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if (!var) {
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var = Cvar_Get (name, Cmd_Argv (Cmd_Argc () - 1), CVAR_USER_CREATED,
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0, USER_CVAR);
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}
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// loop through the args until you find one that matches the current cvar
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// value. yes, this will get stuck on a list that contains the same value
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// twice. it's not worth dealing with, and i'm not even sure it can be
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// dealt with -- johnfitz
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for (i = 2; i < Cmd_Argc (); i++) {
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// zero is assumed to be a string, even though it could actually be
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// zero. The worst case is that the first time you call this command,
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// it won't match on zero when it should, but after that, it will be
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// comparing string that all had the same source (the user) so it will
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// work.
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if (atof (Cmd_Argv (i)) == 0) {
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if (!strcmp (Cmd_Argv (i), var->string))
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break;
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} else {
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if (atof (Cmd_Argv (i)) == var->value)
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break;
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}
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}
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if (i == Cmd_Argc ())
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Cvar_Set (var, Cmd_Argv (2)); // no match
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else if (i + 1 == Cmd_Argc ())
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Cvar_Set (var, Cmd_Argv (2)); // matched last value in list
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else
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Cvar_Set (var, Cmd_Argv (i + 1)); // matched earlier in list
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}
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static void
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Cvar_Reset_f (void)
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{
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cvar_t *var;
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const char *name;
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switch (Cmd_Argc ()) {
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default:
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case 1:
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Sys_Printf ("reset <cvar> : reset cvar to default\n");
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break;
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case 2:
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name = Cmd_Argv (1);
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var = Cvar_FindVar (name);
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if (!var)
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var = Cvar_FindAlias (name);
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if (!var)
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Sys_Printf ("Unknown variable \"%s\"\n", name);
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else
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Cvar_Reset (var);
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break;
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}
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}
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static void Cvar_ResetAll_f (void)
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{
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cvar_t *var;
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for (var = cvar_vars; var; var = var->next)
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if (!(var->flags & CVAR_ROM))
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Cvar_Reset (var);
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}
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static void
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Cvar_CvarList_f (void)
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{
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cvar_t *var;
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int i;
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int showhelp = 0;
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const char *flags;
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if (Cmd_Argc () > 1) {
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showhelp = 1;
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if (strequal (Cmd_Argv (1), "cfg"))
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showhelp++;
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}
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for (var = cvar_vars, i = 0; var; var = var->next, i++) {
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flags = va ("%c%c%c%c",
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var->flags & CVAR_ROM ? 'r' : ' ',
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var->flags & CVAR_ARCHIVE ? '*' : ' ',
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var->flags & CVAR_USERINFO ? 'u' : ' ',
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var->flags & CVAR_SERVERINFO ? 's' : ' ');
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if (showhelp == 2)
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Sys_Printf ("//%s %s\n%s \"%s\"\n\n", flags, var->description,
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var->name, var->string);
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else if (showhelp)
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Sys_Printf ("%s %-20s : %s\n", flags, var->name, var->description);
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else
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Sys_Printf ("%s %s\n", flags, var->name);
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}
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|
|
|
Sys_Printf ("------------\n%d variables\n", i);
|
|
}
|
|
|
|
static void
|
|
cvar_free (void *c, void *unused)
|
|
{
|
|
cvar_t *cvar = (cvar_t*)c;
|
|
free ((char*)cvar->name);
|
|
free ((char*)cvar->string);
|
|
free (cvar);
|
|
}
|
|
|
|
static const char *
|
|
cvar_get_key (void *c, void *unused)
|
|
{
|
|
cvar_t *cvar = (cvar_t*)c;
|
|
return cvar->name;
|
|
}
|
|
|
|
static void
|
|
calias_free (void *c, void *unused)
|
|
{
|
|
cvar_alias_t *calias = (cvar_alias_t *) c;
|
|
free (calias->name);
|
|
free (calias);
|
|
}
|
|
|
|
static const char *
|
|
calias_get_key (void *c, void *unused)
|
|
{
|
|
cvar_alias_t *calias = (cvar_alias_t *) c;
|
|
return calias->name;
|
|
}
|
|
|
|
VISIBLE void
|
|
Cvar_Init_Hash (void)
|
|
{
|
|
cvar_hash = Hash_NewTable (1021, cvar_get_key, cvar_free, 0);
|
|
calias_hash = Hash_NewTable (1021, calias_get_key, calias_free, 0);
|
|
}
|
|
|
|
VISIBLE void
|
|
Cvar_Init (void)
|
|
{
|
|
developer = Cvar_Get ("developer", "0", CVAR_NONE, NULL,
|
|
"set to enable extra debugging information");
|
|
|
|
Cmd_AddCommand ("set", Cvar_Set_f, "Set the selected variable, useful on "
|
|
"the command line (+set variablename setting)");
|
|
Cmd_AddCommand ("setrom", Cvar_Setrom_f, "Set the selected variable and "
|
|
"make it read-only, useful on the command line. "
|
|
"(+setrom variablename setting)");
|
|
Cmd_AddCommand ("seta", Cvar_Seta_f, "Set the selected variable, and make "
|
|
"it archived, useful on the command line (+seta "
|
|
"variablename setting)");
|
|
Cmd_AddCommand ("toggle", Cvar_Toggle_f, "Toggle a cvar on or off");
|
|
Cmd_AddCommand ("cvarlist", Cvar_CvarList_f, "List all cvars");
|
|
Cmd_AddCommand ("cycle", Cvar_Cycle_f,
|
|
"Cycle a cvar through a list of values");
|
|
Cmd_AddCommand ("inc", Cvar_Inc_f, "Increment a cvar");
|
|
Cmd_AddCommand ("reset", Cvar_Reset_f, "Reset a cvar");
|
|
Cmd_AddCommand ("resetall", Cvar_ResetAll_f, "Reset all cvars");
|
|
}
|
|
|
|
void
|
|
Cvar_Shutdown (void)
|
|
{
|
|
cvar_t *var, *next;
|
|
cvar_alias_t *alias, *nextalias;
|
|
|
|
// Free cvars
|
|
var = cvar_vars;
|
|
while (var) {
|
|
next = var->next;
|
|
free ((char*)var->string);
|
|
free ((char*)var->name);
|
|
free (var);
|
|
var = next;
|
|
}
|
|
// Free aliases
|
|
alias = calias_vars;
|
|
while (alias) {
|
|
nextalias = alias->next;
|
|
free ((char*)alias->name);
|
|
free (alias);
|
|
alias = nextalias;
|
|
}
|
|
}
|
|
|
|
VISIBLE cvar_t *
|
|
Cvar_Get (const char *name, const char *string, int cvarflags,
|
|
void (*callback)(cvar_t*), const char *description)
|
|
{
|
|
|
|
cvar_t *var;
|
|
|
|
if (Cmd_Exists (name)) {
|
|
Sys_Printf ("Cvar_Get: %s is a command\n", name);
|
|
return NULL;
|
|
}
|
|
var = Cvar_FindVar (name);
|
|
if (!var) {
|
|
cvar_t **v;
|
|
var = (cvar_t *) calloc (1, sizeof (cvar_t));
|
|
|
|
// Cvar doesn't exist, so we create it
|
|
var->name = strdup (name);
|
|
var->string = strdup (string);
|
|
var->default_string = strdup (string);
|
|
var->flags = cvarflags;
|
|
var->callback = callback;
|
|
var->description = description;
|
|
var->value = atof (var->string);
|
|
var->int_val = atoi (var->string);
|
|
sscanf (var->string, "%f %f %f",
|
|
&var->vec[0], &var->vec[1], &var->vec[2]);
|
|
Hash_Add (cvar_hash, var);
|
|
|
|
for (v = &cvar_vars; *v; v = &(*v)->next)
|
|
if (strcmp ((*v)->name, var->name) >= 0)
|
|
break;
|
|
var->next = *v;
|
|
*v = var;
|
|
} else {
|
|
// Cvar does exist, so we update the flags and return.
|
|
var->flags &= ~CVAR_USER_CREATED;
|
|
var->flags |= cvarflags;
|
|
if (!var->callback)
|
|
var->callback = callback;
|
|
if (!var->description
|
|
|| strequal (var->description, USER_RO_CVAR)
|
|
|| strequal (var->description, USER_CVAR))
|
|
var->description = description;
|
|
if (!var->default_string)
|
|
var->default_string = strdup (string);
|
|
}
|
|
if (var->callback)
|
|
var->callback (var);
|
|
|
|
return var;
|
|
}
|
|
|
|
/*
|
|
Cvar_SetFlags
|
|
|
|
sets a Cvar's flags simply and easily
|
|
*/
|
|
VISIBLE void
|
|
Cvar_SetFlags (cvar_t *var, int cvarflags)
|
|
{
|
|
if (var == NULL)
|
|
return;
|
|
|
|
var->flags = cvarflags;
|
|
}
|
|
|
|
VISIBLE void
|
|
Cvar_Reset (cvar_t *var)
|
|
{
|
|
Cvar_Set (var, var->default_string);
|
|
}
|