/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <sys/types.h>

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

#include "hexdump.h"

off_t skip;                             /* bytes to skip */

void
newsyntax(int argc, char ***argvp)
{
        int ch;
        char *p, **argv;

        argv = *argvp;
        if ((p = strrchr(argv[0], 'h')) != NULL &&
            strcmp(p, "hd") == 0) {
                /* "Canonical" format, implies -C. */
                add("\"%08.8_Ax\n\"");
                add("\"%08.8_ax  \" 8/1 \"%02x \" \"  \" 8/1 \"%02x \" ");
                add("\"  |\" 16/1 \"%_p\" \"|\\n\"");
        }
        while ((ch = getopt(argc, argv, "bcCde:f:n:os:vx")) != -1)
                switch (ch) {
                case 'b':
                        add("\"%07.7_Ax\n\"");
                        add("\"%07.7_ax \" 16/1 \"%03o \" \"\\n\"");
                        break;
                case 'c':
                        add("\"%07.7_Ax\n\"");
                        add("\"%07.7_ax \" 16/1 \"%3_c \" \"\\n\"");
                        break;
                case 'C':
                        add("\"%08.8_Ax\n\"");
                        add("\"%08.8_ax  \" 8/1 \"%02x \" \"  \" 8/1 \"%02x \" ");
                        add("\"  |\" 16/1 \"%_p\" \"|\\n\"");
                        break;
                case 'd':
                        add("\"%07.7_Ax\n\"");
                        add("\"%07.7_ax \" 8/2 \"  %05u \" \"\\n\"");
                        break;
                case 'e':
                        add(optarg);
                        break;
                case 'f':
                        addfile(optarg);
                        break;
                case 'n':
                        if ((length = atoi(optarg)) < 0)
                                errx(1, "%s: bad length value", optarg);
                        break;
                case 'o':
                        add("\"%07.7_Ax\n\"");
                        add("\"%07.7_ax \" 8/2 \" %06o \" \"\\n\"");
                        break;
                case 's':
                        if ((skip = strtoll(optarg, &p, 0)) < 0)
                                errx(1, "%s: bad skip value", optarg);
                        switch(*p) {
                        case 'b':
                                skip *= 512;
                                break;
                        case 'k':
                                skip *= 1024;
                                break;
                        case 'm':
                                skip *= 1048576;
                                break;
                        }
                        break;
                case 'v':
                        vflag = ALL;
                        break;
                case 'x':
                        add("\"%07.7_Ax\n\"");
                        add("\"%07.7_ax \" 8/2 \"   %04x \" \"\\n\"");
                        break;
                case '?':
                        usage();
                }

        if (!fshead) {
                add("\"%07.7_Ax\n\"");
                add("\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
        }

        *argvp += optind;
}

void
usage(void)
{
        (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
"usage: hexdump [-bcCdovx] [-e fmt] [-f fmt_file] [-n length]",
"               [-s skip] [file ...]",
"       hd      [-bcdovx]  [-e fmt] [-f fmt_file] [-n length]",
"               [-s skip] [file ...]");
        exit(1);
}