usr.bin/hexdump/hexsyntax.c

   1 /*-
   2  * Copyright (c) 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)hexsyntax.c      8.2 (Berkeley) 5/4/95
  30  * $FreeBSD: src/usr.bin/hexdump/hexsyntax.c,v 1.8.2.1 2002/07/23 14:27:06 tjr Exp $
  31  * $DragonFly: src/usr.bin/hexdump/hexsyntax.c,v 1.4 2004/08/30 18:06:49 eirikn Exp $
  32  */
  33
  34 #include <sys/types.h>
  35
  36 #include <err.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <unistd.h>
  41
  42 #include "hexdump.h"
  43
  44 off_t skip;                             /* bytes to skip */
  45
  46 void
  47 newsyntax(int argc, char ***argvp)
  48 {
  49         int ch;
  50         char *p, **argv;
  51
  52         argv = *argvp;
  53         if ((p = strrchr(argv[0], 'h')) != NULL &&
  54             strcmp(p, "hd") == 0) {
  55                 /* "Canonical" format, implies -C. */
  56                 add("\"%08.8_Ax\n\"");
  57                 add("\"%08.8_ax  \" 8/1 \"%02x \" \"  \" 8/1 \"%02x \" ");
  58                 add("\"  |\" 16/1 \"%_p\" \"|\\n\"");
  59         }
  60         while ((ch = getopt(argc, argv, "bcCde:f:n:os:vx")) != -1)
  61                 switch (ch) {
  62                 case 'b':
  63                         add("\"%07.7_Ax\n\"");
  64                         add("\"%07.7_ax \" 16/1 \"%03o \" \"\\n\"");
  65                         break;
  66                 case 'c':
  67                         add("\"%07.7_Ax\n\"");
  68                         add("\"%07.7_ax \" 16/1 \"%3_c \" \"\\n\"");
  69                         break;
  70                 case 'C':
  71                         add("\"%08.8_Ax\n\"");
  72                         add("\"%08.8_ax  \" 8/1 \"%02x \" \"  \" 8/1 \"%02x \" ");
  73                         add("\"  |\" 16/1 \"%_p\" \"|\\n\"");
  74                         break;
  75                 case 'd':
  76                         add("\"%07.7_Ax\n\"");
  77                         add("\"%07.7_ax \" 8/2 \"  %05u \" \"\\n\"");
  78                         break;
  79                 case 'e':
  80                         add(optarg);
  81                         break;
  82                 case 'f':
  83                         addfile(optarg);
  84                         break;
  85                 case 'n':
  86                         if ((length = atoi(optarg)) < 0)
  87                                 errx(1, "%s: bad length value", optarg);
  88                         break;
  89                 case 'o':
  90                         add("\"%07.7_Ax\n\"");
  91                         add("\"%07.7_ax \" 8/2 \" %06o \" \"\\n\"");
  92                         break;
  93                 case 's':
  94                         if ((skip = strtoll(optarg, &p, 0)) < 0)
  95                                 errx(1, "%s: bad skip value", optarg);
  96                         switch(*p) {
  97                         case 'b':
  98                                 skip *= 512;
  99                                 break;
 100                         case 'k':
 101                                 skip *= 1024;
 102                                 break;
 103                         case 'm':
 104                                 skip *= 1048576;
 105                                 break;
 106                         }
 107                         break;
 108                 case 'v':
 109                         vflag = ALL;
 110                         break;
 111                 case 'x':
 112                         add("\"%07.7_Ax\n\"");
 113                         add("\"%07.7_ax \" 8/2 \"   %04x \" \"\\n\"");
 114                         break;
 115                 case '?':
 116                         usage();
 117                 }
 118
 119         if (!fshead) {
 120                 add("\"%07.7_Ax\n\"");
 121                 add("\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
 122         }
 123
 124         *argvp += optind;
 125 }
 126
 127 void
 128 usage(void)
 129 {
 130         (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
 131 "usage: hexdump [-bcCdovx] [-e fmt] [-f fmt_file] [-n length]",
 132 "               [-s skip] [file ...]",
 133 "       hd      [-bcdovx]  [-e fmt] [-f fmt_file] [-n length]",
 134 "               [-s skip] [file ...]");
 135         exit(1);
 136 }