text-utils/hexdump.c

   1 /*
   2  * Copyright (c) 1989 The Regents of the University of California.
   3  * 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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 char copyright[] =
  36 "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
  37  All rights reserved.\n";
  38 #endif /* not lint */
  39
  40 #ifndef lint
  41 static char sccsid[] = "@(#)hexdump.c   5.5 (Berkeley) 6/1/90";
  42 #endif /* not lint */
  43
  44 #include <sys/types.h>
  45 #include <stdio.h>
  46 #include "hexdump.h"
  47
  48 FS *fshead;                             /* head of format strings */
  49 int blocksize;                          /* data block size */
  50 int exitval;                            /* final exit value */
  51 int length = -1;                        /* max bytes to read */
  52
  53 main(argc, argv)
  54         int argc;
  55         char **argv;
  56 {
  57         extern int errno;
  58         register FS *tfs;
  59         char *p, *rindex();
  60
  61         if (!(p = rindex(argv[0], 'o')) || strcmp(p, "od"))
  62                 newsyntax(argc, &argv);
  63         else
  64                 oldsyntax(argc, &argv);
  65
  66         /* figure out the data block size */
  67         for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
  68                 tfs->bcnt = size(tfs);
  69                 if (blocksize < tfs->bcnt)
  70                         blocksize = tfs->bcnt;
  71         }
  72         /* rewrite the rules, do syntax checking */
  73         for (tfs = fshead; tfs; tfs = tfs->nextfs)
  74                 rewrite(tfs);
  75
  76         (void)next(argv);
  77         display();
  78         exit(exitval);
  79 }