env.c

/*
 * Example of how an application can allow free-form key=value strings as settings,
 * e.g., custom environment variables the program should set for child processes.
 *
 * env.conf:
 *     env {
 *          foo = bar
 *          baz = foo
 *     }
 */
#include <err.h>
#include <confuse.h>
#include <stdio.h>
 
int main(int argc, char *argv[])
{
    const char *file = "env.conf";
    cfg_opt_t opts[] = {
        CFG_SEC("env", NULL, CFGF_KEYSTRVAL),
        CFG_END()
    };
    cfg_t *cfg, *sec;
    int rc;
 
    if (argc > 1)
        file = argv[1];
 
    cfg = cfg_init(opts, 0);
    if (!cfg)
        err(1, "Failed cfg_init()");
 
    rc = cfg_parse(cfg, file);
    if (rc != CFG_SUCCESS) {
        if (rc == CFG_FILE_ERROR)
            err(1, "Failed opening %s", file);
 
        errx(1, "Failed parsing %s", file);
    }
 
    sec = cfg_getsec(cfg, "env");
    if (sec) {
        unsigned int i;
 
        for (i = 0; i < cfg_num(sec); i++) {
            cfg_opt_t *opt = cfg_getnopt(sec, i);
 
            printf("%s = \"%s\"\n", cfg_opt_name(opt), cfg_opt_getstr(opt));
        }
    }
 
//  cfg_print(cfg, stdout);
    cfg_free(cfg);
 
    return 0;
}