usr.bin/hexdump/hexdump.c

   1 /*      $NetBSD: hexdump.c,v 1.18 2012/07/06 09:06:43 wiz Exp $ */
   2
   3 /*
   4  * Copyright (c) 1989, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #if HAVE_NBTOOL_CONFIG_H
  33 #include "nbtool_config.h"
  34 #endif
  35
  36 #include <sys/cdefs.h>
  37 #if !defined(lint)
  38 __COPYRIGHT("@(#) Copyright (c) 1989, 1993\
  39  The Regents of the University of California.  All rights reserved.");
  40 #if 0
  41 static char sccsid[] = "@(#)hexdump.c   8.1 (Berkeley) 6/6/93";
  42 #else
  43 __RCSID("$NetBSD: hexdump.c,v 1.18 2012/07/06 09:06:43 wiz Exp $");
  44 #endif
  45 #endif /* not lint */
  46
  47 #include <sys/types.h>
  48
  49 #include <errno.h>
  50 #include <locale.h>
  51 #include <stdlib.h>
  52 #include <stdio.h>
  53 #include <string.h>
  54
  55 #include "hexdump.h"
  56
  57 FS *fshead;                             /* head of format strings */
  58 int blocksize;                          /* data block size */
  59 int exitval;                            /* final exit value */
  60 int length = -1;                        /* max bytes to read */
  61 static int isod = 0;
  62
  63 int
  64 main(int argc, char *argv[])
  65 {
  66         FS *tfs;
  67         char *p;
  68
  69         setlocale(LC_ALL, "");
  70
  71         isod = 0;
  72         p = strrchr(argv[0], 'o');
  73         if (p != NULL && strcmp(p, "od") == 0)
  74                 isod = 1;
  75
  76         if (isod)
  77                 odsyntax(argc, &argv);
  78         else
  79                 hexsyntax(argc, &argv);
  80
  81         /* figure out the data block size */
  82         for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
  83                 tfs->bcnt = size(tfs);
  84                 if (blocksize < tfs->bcnt)
  85                         blocksize = tfs->bcnt;
  86         }
  87         /* rewrite the rules, do syntax checking */
  88         for (tfs = fshead; tfs; tfs = tfs->nextfs)
  89                 rewrite(tfs);
  90
  91         (void)next(argv);
  92         display();
  93         exit(exitval);
  94 }
  95
  96 void
  97 usage(void)
  98 {
  99         const char *pname = getprogname();
 100
 101         (void)fprintf(stderr, "usage: %s ", pname);
 102         if (isod)
 103                 (void)fprintf(stderr, "[-aBbcDdeFfHhIiLlOovXx] [-A base] "
 104                     "[-j skip] [-N length] [-t type_string] [[+]offset[.][Bb]] "
 105                     "[file ...]\n");
 106         else
 107                 (void)fprintf(stderr, "[-bCcdovx] [-e format_string] [-f format_file] "
 108                     "[-n length] [-s skip] [file ...]\n");
 109         exit(1);
 110 }