xref: /original-bsd/usr.bin/hexdump/hexdump.c (revision 8c1e77f1)

/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1989, 1993\n\
	The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)hexdump.c	8.1 (Berkeley) 06/06/93";
#endif /* not lint */

#include <sys/types.h>

#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "hexdump.h"

FS *fshead;				/* head of format strings */
int blocksize;				/* data block size */
int exitval;				/* final exit value */
int length = -1;			/* max bytes to read */

int
main(argc, argv)
	int argc;
	char *argv[];
{
	register FS *tfs;
	char *p;

	if (!(p = rindex(argv[0], 'o')) || strcmp(p, "od"))
		newsyntax(argc, &argv);
	else
		oldsyntax(argc, &argv);

	/* figure out the data block size */
	for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
		tfs->bcnt = size(tfs);
		if (blocksize < tfs->bcnt)
			blocksize = tfs->bcnt;
	}
	/* rewrite the rules, do syntax checking */
	for (tfs = fshead; tfs; tfs = tfs->nextfs)
		rewrite(tfs);

	(void)next(argv);
	display();
	exit(exitval);
}

#if __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif

void
#if __STDC__
err(const char *fmt, ...)
#else
err(fmt, va_alist)
	char *fmt;
        va_dcl
#endif
{
	va_list ap;
#if __STDC__
	va_start(ap, fmt);
#else
	va_start(ap);
#endif
	(void)fprintf(stderr, "hexdump: ");
	(void)vfprintf(stderr, fmt, ap);
	va_end(ap);
	(void)fprintf(stderr, "\n");
	exit(1);
	/* NOTREACHED */
}