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config.c
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config.c
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/*
Copyright (C) 2000 Jason C. Garcowski(jcg5@po.cwru.edu),
Ryan Glasnapp(rglasnap@nmt.edu)
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.
*/
#ifdef HAVE_CONFIG_H
# include <autoconf.h>
#endif /* HAVE_CONFIG_H */
#ifdef HAVE_ERRNO_H
# include <errno.h>
#endif /* HAVE_STDIO_H */
#ifdef HAVE_STDIO_H
# include <stdio.h>
#endif /* HAVE_STDIO_H */
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif /* HAVE_STDLIB_H */
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include "config.h"
#include "parse.h"
extern struct config *configdata;
#define init_config_cleanup() \
{ \
if (configfile != NULL) \
{ \
fclose (configfile); \
configfile = NULL; \
} \
}
#define init_config_error(a) \
{ \
perror (a); \
init_config_cleanup (); \
return (errno); \
}
int init_config (char *filename)
{
FILE *configfile = NULL;
char buffer[BUFF_SIZE];
char bangdate[BUFF_SIZE];
if ((configdata =
(struct config *) malloc (sizeof (struct config))) == NULL)
{
fprintf (stderr,
"Unable to allocate enough memory for configuration data\n");
exit (-1);
}
configfile = fopen (filename, "rb");
if (configfile == NULL)
{
init_config_error (filename);
/*
I don't like the way this works. I think that if it can't find a config
then it generates a config.data.default file, tells the user and closes.
This allows the user to rename the config.data.default file to config.data
and re-run the program.
*/
/*
fprintf(stdout, "Can't find config.data file. Generating config.data.default file, rename to config.data and re-run.\n");
fclose(configfile);
configdata->turnsperday = TURNS_PER_DAY;
configdata->maxwarps = MAX_WARPS;
configdata->startingcredits = START_CREDITS;
configdata->startingfighters = START_FIGHTERS ;
configdata->startingholds = START_HOLDS ;
configdata->processinterval = PROCESS_INTERVAL;
configdata->autosave = AUTOSAVE;
configdata->max_players = MAX_PLAYERS ;
configdata->max_ships = MAX_SHIPS;
configdata->max_ports = MAX_PORTS;
configdata->max_planets = MAX_TOTAL_PLANETS / 2 ;
configdata->max_total_planets = MAX_TOTAL_PLANETS ;
configdata->max_safe_planets = MAX_TOTAL_PLANETS / 2 ;
configdata->max_citadel_level = MAX_CITADEL_LEVEL;
configdata->number_of_planet_types = NUMBER_OF_PLANET_TYPES;
configdata->max_ship_name_length = MAX_SHIP_NAME;
configdata->ship_type_count = SHIP_TYPES;
time_t datenow;
datenow = time(NULL);
configdata->bangdate = (unsigned long)datenow;
configdata->numnodes = DEFAULT_NODES;
saveconfig("config.data.default");
exit (1);
*/
}
if (fgets (buffer, BUFF_SIZE, configfile))
{
configdata->turnsperday = popint (buffer, ":");
configdata->maxwarps = popint(buffer, ":");
configdata->startingcredits = popint (buffer, ":");
configdata->startingfighters = popint (buffer, ":");
configdata->startingholds = popint (buffer, ":");
configdata->processinterval = popint (buffer, ":");
configdata->autosave = popint (buffer, ":");
configdata->max_players = popint(buffer, ":");
configdata->max_ships = popint(buffer, ":");
configdata->max_ports = popint(buffer, ":");
configdata->max_planets = popint(buffer, ":");
configdata->max_total_planets = popint(buffer, ":");
configdata->max_safe_planets = popint(buffer, ":");
configdata->max_citadel_level = popint(buffer, ":");
configdata->number_of_planet_types = popint(buffer, ":");
configdata->max_ship_name_length = popint(buffer, ":");
configdata->ship_type_count = popint(buffer, ":");
popstring(buffer, bangdate, ":", BUFF_SIZE);
configdata->bangdate = strtoul(bangdate,NULL,10);
configdata->numnodes = popint(buffer, ":");
fclose(configfile);
}
return (1);
}
int saveconfig(char *filename)
{
FILE *configfile = NULL;
char *buffer = (char *)malloc(sizeof(char)*BUFF_SIZE);
char *bdate = (char *)malloc(sizeof(char)*BUFF_SIZE);
int loop=0;
configfile = fopen (filename, "w");
strcpy(buffer, "\0");
strcpy(bdate, "\0");
addint(buffer, configdata->turnsperday, ':', BUFF_SIZE);
addint(buffer, configdata->maxwarps, ':', BUFF_SIZE);
addint(buffer, configdata->startingcredits, ':', BUFF_SIZE);
addint(buffer, configdata->startingfighters, ':', BUFF_SIZE);
addint(buffer, configdata->startingholds, ':', BUFF_SIZE);
addint(buffer, configdata->processinterval, ':', BUFF_SIZE);
addint(buffer, configdata->autosave, ':', BUFF_SIZE);
addint(buffer, configdata->max_players, ':', BUFF_SIZE);
addint(buffer, configdata->max_ships, ':', BUFF_SIZE);
addint(buffer, configdata->max_ports, ':', BUFF_SIZE);
addint(buffer, configdata->max_planets, ':', BUFF_SIZE);
addint(buffer, configdata->max_total_planets, ':', BUFF_SIZE);
addint(buffer, configdata->max_safe_planets, ':', BUFF_SIZE);
addint(buffer, configdata->max_citadel_level, ':', BUFF_SIZE);
addint(buffer, configdata->number_of_planet_types, ':', BUFF_SIZE);
addint(buffer, configdata->max_ship_name_length, ':', BUFF_SIZE);
addint(buffer, configdata->ship_type_count, ':', BUFF_SIZE);
sprintf(bdate, "%ld", configdata->bangdate);
addstring(buffer, bdate, ':', BUFF_SIZE);
addint(buffer, configdata->numnodes, ':', BUFF_SIZE);
for (loop=0; loop < 199 - strlen(buffer); loop++)
strcat(buffer, " ");
strcat(buffer, "\n");
fprintf(configfile, "%s", buffer);
fclose(configfile);
free(buffer);
free(bdate);
return (1);
}