#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <confuse.h>

#define CONFFILE "hello.conf"

int main(int argc, char *argv[])
{
    cfg_opt_t opts[] =
    {
        CFG_STR("target", "World", CFGF_NONE),
        CFG_FUNC("include", &cfg_include),
        CFG_END()
    };
    cfg_t *cfg;
    char *buff;
    struct stat statbuf;
    int fd;

    cfg = cfg_init(opts, CFGF_NONE);

    if (argc > 1) {
        if (strcmp(argv[1], "--buffer") == 0) {
            if (stat (CONFFILE, &statbuf) == 0) {
                buff = calloc(statbuf.st_size + 1, 1);
                fd = open (CONFFILE, O_RDONLY);
                read (fd, buff, statbuf.st_size);
                close(fd);
                if (cfg_parse_buf(cfg, buff) == CFG_PARSE_ERROR) {
                    printf ("ERROR: cfg_parse_buf failed\n");
                    return 1;
                }
            } else {
                printf ("ERROR: missing %s\n", CONFFILE);
                return 1;
            }
        } else {
            printf("USAGE: %s [OPTIONS]\n", argv[0]);
            printf("\n");
            printf("\t-h, --help\tPrint help and exit\n");
            printf("\t--buffer\tRead configuration into a buffer\n");
            printf("\n");
            return 0;
        }
    } else {
        if (cfg_parse(cfg, CONFFILE) == CFG_PARSE_ERROR) {
            printf ("ERROR: cfg_parse failed\n");
            return 1;
        }
    }

    printf("Hello, %s!\n", cfg_getstr(cfg, "target"));

    cfg_free(cfg);
    return 0;
}