confuse: simple.c

confuse 3.0

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simple.c
#define _GNU_SOURCE
#include <string.h>
#include <stdlib.h>
#include <locale.h>
#include "confuse.h"
int main(void)
{
static cfg_bool_t verbose = cfg_false;
static char *server = NULL;
static double delay = 1.356e-32;
static char *username = NULL;
/* Although the macro used to specify an integer option is called
* CFG_SIMPLE_INT(), it actually expects a long int. On a 64 bit system
* where ints are 32 bit and longs 64 bit (such as the x86-64 or amd64
* architectures), you will get weird effects if you use an int here.
*
* If you use the regular (non-"simple") options, ie CFG_INT() and use
* cfg_getint(), this is not a problem as the data types are implicitly
* cast.
*/
static long int debug = 1;
cfg_opt_t opts[] = {
CFG_SIMPLE_BOOL("verbose", &verbose),
CFG_SIMPLE_STR("server", &server),
CFG_SIMPLE_STR("user", &username),
CFG_SIMPLE_INT("debug", &debug),
CFG_SIMPLE_FLOAT("delay", &delay),
CFG_END()
};
cfg_t *cfg;
/* Localize messages & types according to environment, since v2.9 */
setlocale(LC_MESSAGES, "");
setlocale(LC_CTYPE, "");
/* set default value for the server option */
server = strdup("gazonk");
cfg = cfg_init(opts, 0);
cfg_parse(cfg, "simple.conf");
printf("verbose: %s\n", verbose ? "true" : "false");
printf("server: %s\n", server);
printf("username: %s\n", username);
printf("debug: %ld\n", debug);
printf("delay: %G\n", delay);
printf("setting username to 'foo'\n");
/* using cfg_setstr here is not necessary at all, the equivalent
* code is:
* free(username);
* username = strdup("foo");
*/
cfg_setstr(cfg, "user", "foo");
printf("username: %s\n", username);
/* print the parsed values to another file */
{
FILE *fp = fopen("simple.conf.out", "w");
cfg_print(cfg, fp);
fclose(fp);
}
cfg_free(cfg);
/* You are responsible for freeing string values. */
free(server);
free(username);
return 0;
}