fatbase

portable OpenBSD tools
git clone git@git.2f30.org/fatbase.git
Log | Files | Refs

hexdump.c (2752B)


      1 /*	$OpenBSD: hexdump.c,v 1.16 2011/09/22 09:09:42 stsp Exp $	*/
      2 /*	$NetBSD: hexdump.c,v 1.7 1997/10/19 02:34:06 lukem Exp $	*/
      3 
      4 /*
      5  * Copyright (c) 1989, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. Neither the name of the University nor the names of its contributors
     17  *    may be used to endorse or promote products derived from this software
     18  *    without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/param.h>
     34 #include <err.h>
     35 #include <stdio.h>
     36 #include <stdlib.h>
     37 #include <string.h>
     38 #include "hexdump.h"
     39 
     40 FS *fshead;				/* head of format strings */
     41 int blocksize;				/* data block size */
     42 int exitval;				/* final exit value */
     43 long length = -1;			/* max bytes to read */
     44 char *iobuf;				/* stdio I/O buffer */
     45 size_t iobufsiz;			/* size of stdio I/O buffer */
     46 
     47 int	main(int, char **);
     48 
     49 int
     50 main(int argc, char *argv[])
     51 {
     52 	FS *tfs;
     53 	char *p;
     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 	if (length != -1) {
     67 		iobufsiz = MIN(length, blocksize);
     68 		if ((iobuf = malloc(iobufsiz)) == NULL)
     69 			err(1, NULL);
     70 	}
     71 	/* rewrite the rules, do syntax checking */
     72 	for (tfs = fshead; tfs; tfs = tfs->nextfs)
     73 		rewrite(tfs);
     74 
     75 	(void)next(argv);
     76 	display();
     77 	exit(exitval);
     78 }