freebsd-dev/usr.bin/hexdump/conv.c

/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#ifndef lint
static const char sccsid[] = "@(#)conv.c	8.1 (Berkeley) 6/6/93";
#endif /* not lint */

#include <sys/types.h>

#include <stdio.h>
#include <ctype.h>
#include "hexdump.h"

void
conv_c(pr, p)
	PR *pr;
	u_char *p;
{
	extern int deprecated;
	char buf[10], *str;
	static char nul[] = "\\0";
	static char alarm[] = "\\a";
	static char backspace[] = "\\b";
	static char formfeed[] = "\\f";
	static char newline[] = "\\n";
	static char carriageret[] = "\\r";
	static char verticaltab[] = "\\v";
	static char tab[] = "\\t";

	switch(*p) {
	case '\0':
		str = nul;
		goto strpr;
	/* case '\a': */
	case '\007':
		if (deprecated)		/* od didn't know about \a */
			break;
		str = alarm;
		goto strpr;
	case '\b':
		str = backspace;
		goto strpr;
	case '\f':
		str = formfeed;
		goto strpr;
	case '\n':
		str = newline;
		goto strpr;
	case '\r':
		str = carriageret;
		goto strpr;
	case '\t':
		str = tab;
		goto strpr;
	case '\v':
		if (deprecated)
			break;
		str = verticaltab;
		goto strpr;
	default:
		break;
	}
	if (isprint(*p)) {
		*pr->cchar = 'c';
		(void)printf(pr->fmt, *p);
	} else {
		(void)sprintf(str = buf, "%03o", (int)*p);
strpr:		*pr->cchar = 's';
		(void)printf(pr->fmt, str);
	}
}

void
conv_u(pr, p)
	PR *pr;
	u_char *p;
{
	extern int deprecated;
	static const char *list[] = {
		"nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel",
		 "bs",  "ht",  "lf",  "vt",  "ff",  "cr",  "so",  "si",
		"dle", "dcl", "dc2", "dc3", "dc4", "nak", "syn", "etb",
		"can",  "em", "sub", "esc",  "fs",  "gs",  "rs",  "us",
	};

						/* od used nl, not lf */
	if (*p <= 0x1f) {
		*pr->cchar = 's';
		if (deprecated && *p == 0x0a)
			(void)printf(pr->fmt, "nl");
		else
			(void)printf(pr->fmt, list[*p]);
	} else if (*p == 0x7f) {
		*pr->cchar = 's';
		(void)printf(pr->fmt, "del");
	} else if (deprecated && *p == 0x20) {	/* od replaced space with sp */
		*pr->cchar = 's';
		(void)printf(pr->fmt, " sp");
	} else if (isprint(*p)) {
		*pr->cchar = 'c';
		(void)printf(pr->fmt, *p);
	} else {
		*pr->cchar = 'x';
		(void)printf(pr->fmt, (int)*p);
	}
}