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#include <unistd.h>

#include <string.h>

#include <getopt.h>

/* Written 2000 by Werner Almesberger */

static const char *__resume;

int getopt_long(int argc,char *const argv[],const char *optstring,

  const struct option *longopts,int *longindex)

{

    char *here;

    optarg = NULL;

    if (!__resume) {

        if (argc == optind || *argv[optind] != '-') return -1;

        if (argv[optind][1] == '-') {

            const struct option *opt;

            optarg = strchr(argv[optind],'=');

            if (optarg) optarg++;

            for (opt = longopts; opt->name &&

              (optarg || strcmp(opt->name,argv[optind]+2)) &&

              (!optarg || strlen(opt->name) != optarg-argv[optind]-3 ||

              strncmp(opt->name,argv[optind]+2,optarg-argv[optind]-3));

              opt++);

            optind++;

            if (!opt->name) return '?';

            if ((opt->has_arg == no_argument && optarg) ||

              (opt->has_arg == required_argument && !optarg)) return ':';

            if (longindex) *longindex = opt-longopts;

            if (!opt->flag) return opt->val;

            *opt->flag = opt->val;

            return 0;

        }

        else {

            __resume = argv[optind]+1;

        }

    }

    here = strchr(optstring,*__resume);

    if (!here) {

        optind++;

        __resume = NULL;

        return '?';

    }

    if (here[1] != ':') {

        if (!*++__resume) __resume = NULL;

    }

    else {

        if (__resume[1]) optarg = (char *) __resume+1;

        else {

            optarg = (char *) argv[++optind];

            if (optind == argc || *argv[optind] == '-') {

                optind++;

                __resume = NULL;

                return ':';

            }

        }

        __resume = NULL;

    }

    if (!__resume) optind++;

    return *here;

}