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/*
* cfgfile.c -- misc reads from the config file
*
* Copyright (C) 2008-2012 O.Sezer <sezero@users.sourceforge.net>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "quakedef.h"
static fshandle_t *cfg_file;
/*
===================
CFG_ReadCvars
used for doing early reads from config.cfg searching the list
of given cvar names for the user-set values. a temporary
solution until we merge a better cvar system.
the num_vars argument must be the exact number of strings in the
array, otherwise I have nothing against going out of bounds.
===================
*/
void CFG_ReadCvars (const char **vars, int num_vars)
{
char buff[1024], *tmp;
int i, j;
if (!cfg_file || num_vars < 1)
return;
j = 0;
do {
i = 0;
memset (buff, 0, sizeof(buff));
// we expect a line in the format that Cvar_WriteVariables
// writes to the config file. although I'm trying to be as
// much cautious as possible, if the user screws it up by
// editing it, it's his fault.
if (FS_fgets(buff, sizeof(buff), cfg_file))
{
// remove end-of-line characters
while (buff[i])
{
if (buff[i] == '\r' || buff[i] == '\n')
buff[i] = '\0';
// while we're here, replace tabs with spaces
if (buff[i] == '\t')
buff[i] = ' ';
i++;
}
// go to the last character
while (buff[i] == 0 && i > 0)
i--;
// remove trailing spaces
while (i > 0)
{
if (buff[i] == ' ')
{
buff[i] = '\0';
i--;
}
else
break;
}
// the line must end with a quotation mark
if (buff[i] != '\"')
continue;
buff[i] = '\0';
for (i = 0; i < num_vars && vars[i]; i++)
{
// look for the cvar name + one space
tmp = strstr(buff, va("%s ",vars[i]));
if (tmp != buff)
continue;
// locate the first quotation mark
tmp = strchr(buff, '\"');
if (tmp)
{
Cvar_Set (vars[i], tmp + 1);
j++;
break;
}
}
}
if (j == num_vars)
break;
} while (!FS_feof(cfg_file) && !FS_ferror(cfg_file));
FS_rewind (cfg_file);
}
/*
===================
CFG_ReadCvarOverrides
convenience function, reading the "+" command line override
values of cvars in the given list. doesn't do anything with
the config file.
===================
*/
void CFG_ReadCvarOverrides (const char **vars, int num_vars)
{
char buff[64];
int i, j;
if (num_vars < 1)
return;
buff[0] = '+';
for (i = 0; i < num_vars; i++)
{
q_strlcpy (&buff[1], vars[i], sizeof(buff) - 1);
j = COM_CheckParm(buff);
if (j != 0 && j < com_argc - 1)
{
if (com_argv[j + 1][0] != '-' && com_argv[j + 1][0] != '+')
Cvar_Set(vars[i], com_argv[j + 1]);
}
}
}
void CFG_CloseConfig (void)
{
if (cfg_file)
{
FS_fclose(cfg_file);
Z_Free(cfg_file);
cfg_file = NULL;
}
}
int CFG_OpenConfig (const char *cfg_name)
{
FILE *f;
long length;
qboolean pak;
CFG_CloseConfig ();
length = (long) COM_FOpenFile (cfg_name, &f, NULL);
pak = file_from_pak;
if (length == -1)
return -1;
cfg_file = (fshandle_t *) Z_Malloc(sizeof(fshandle_t));
cfg_file->file = f;
cfg_file->start = ftell(f);
cfg_file->pos = 0;
cfg_file->length = length;
cfg_file->pak = pak;
return 0;
}
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