/*      $NetBSD: h_getopt.c,v 1.1 2011/01/01 23:56:49 pgoyette Exp $    */

/*-
 * Copyright (c) 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Christos Zoulas.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <err.h>

#define WS      "\t\n "
#define debug   0

int
main(int argc, char *argv[])
{
        size_t len, lineno = 0;
        char *line, *ptr, *optstring = NULL, *result = NULL;
        char buf[1024];
        char *args[100];
        char arg[100];
        int nargs = -1;
        int c;

        while ((line = fparseln(stdin, &len, &lineno, NULL, 0)) != NULL) {
                if (strncmp(line, "load:", 5) == 0) {
                        if (optstring)
                                free(optstring);
                        optstring = strtok(&line[6], WS);
                        if (optstring == NULL)
                            errx(1, "missing optstring at line %ld",
                                (unsigned long)lineno);
                        optstring = strdup(optstring);
                        if (debug)
                                fprintf(stderr, "optstring = %s\n", optstring);
                } else if (strncmp(line, "args:", 5) == 0) {
                        for (; nargs >= 0; nargs--) {
                                if (args[nargs] != NULL)
                                        free(args[nargs]);
                        }
                        args[nargs = 0] = strtok(&line[6], WS);
                        if (args[nargs] == NULL)
                                errx(1, "missing args at line %ld",
                                    (unsigned long)lineno);

                        args[nargs] = strdup(args[nargs]);
                        while ((args[++nargs] = strtok(NULL, WS)) != NULL)
                                args[nargs] = strdup(args[nargs]);
                        if (debug) {
                                int i = 0;
                                for (i = 0; i < nargs; i++)
                                        fprintf(stderr, "argv[%d] = %s\n", i,
                                            args[i]);
                        }
                } else if (strncmp(line, "result:", 7) == 0) {
                        buf[0] = '\0';
                        optind = optreset = 1;
                        if (result)
                                free(result);
                        result = strtok(&line[8], WS);
                        if (result == NULL)
                                errx(1, "missing result at line %ld",
                                    (unsigned long)lineno);
                        result = strdup(result);
                        if (nargs == -1)
                                errx(1, "result: without args:");
                        if (debug)
                                fprintf(stderr, "result = %s\n", result);
                        while ((c = getopt(nargs, args, optstring)) != -1)  {
                                if (c == ':')
                                        err(1, "`:' found as argument char");
                                if ((ptr = strchr(optstring, c)) == NULL) {
                                        snprintf(arg, sizeof(arg), "!%c,", c);
                                        strcat(buf, arg);
                                        continue;
                                }
                                if (ptr[1] != ':')
                                        snprintf(arg, sizeof(arg), "%c,", c);
                                else
                                        snprintf(arg, sizeof(arg), "%c=%s,",
                                            c, optarg);
                                strcat(buf, arg);
                        }
                        len = strlen(buf);
                        if (len > 0) {
                                buf[len - 1] = '|';
                                buf[len] = '\0';
                        } else {
                                buf[0] = '|';
                                buf[1] = '\0';
                        }
                        snprintf(arg, sizeof(arg), "%d", nargs - optind);
                        strcat(buf, arg);
                        if (strcmp(buf, result) != 0)
                                errx(1, "`%s' != `%s'", buf, result);
                }
                free(line);
        }
        return 0;
}