usr.bin/hexdump/hexdump.c

   1 /*
   2  * Copyright (c) 1989, 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  * @(#) Copyright (c) 1989, 1993 The Regents of the University of California.  All rights reserved.
  30  * @(#)hexdump.c        8.1 (Berkeley) 6/6/93
  31  * $FreeBSD: src/usr.bin/hexdump/hexdump.c,v 1.4.2.2 2002/07/23 14:27:06 tjr Exp $
  32  * $DragonFly: src/usr.bin/hexdump/hexdump.c,v 1.5 2005/04/10 20:55:38 drhodus Exp $
  33  */
  34
  35 #include <sys/types.h>
  36 #include <locale.h>
  37 #include <stdlib.h>
  38 #include <stdio.h>
  39 #include <string.h>
  40 #include "hexdump.h"
  41
  42 FS *fshead;                             /* head of format strings */
  43 int blocksize;                          /* data block size */
  44 int exitval;                            /* final exit value */
  45 int length = -1;                        /* max bytes to read */
  46
  47 int
  48 main(int argc, char **argv)
  49 {
  50         FS *tfs;
  51         char *p;
  52
  53         (void)setlocale(LC_ALL, "");
  54
  55         if (!(p = strrchr(argv[0], 'o')) || strcmp(p, "od"))
  56                 newsyntax(argc, &argv);
  57         else
  58                 oldsyntax(argc, &argv);
  59
  60         /* figure out the data block size */
  61         for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
  62                 tfs->bcnt = size(tfs);
  63                 if (blocksize < tfs->bcnt)
  64                         blocksize = tfs->bcnt;
  65         }
  66         /* rewrite the rules, do syntax checking */
  67         for (tfs = fshead; tfs; tfs = tfs->nextfs)
  68                 rewrite(tfs);
  69
  70         (void)next(argv);
  71         display();
  72         exit(exitval);
  73 }