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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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. 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.
*/
#ifndef lint
static const char sccsid[] = "@(#)conv.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <assert.h>
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <wctype.h>
#include "hexdump.h"
void
conv_c(PR *pr, u_char *p, size_t bufsize)
{
char buf[10];
char const *str;
wchar_t wc;
size_t clen, oclen;
int converr, pad, width;
u_char peekbuf[MB_LEN_MAX];
u_char *op;
op = NULL;
if (pr->mbleft > 0) {
str = "**";
pr->mbleft--;
goto strpr;
}
switch(*p) {
case '\0':
str = "\\0";
goto strpr;
/* case '\a': */
case '\007':
str = "\\a";
goto strpr;
case '\b':
str = "\\b";
goto strpr;
case '\f':
str = "\\f";
goto strpr;
case '\n':
str = "\\n";
goto strpr;
case '\r':
str = "\\r";
goto strpr;
case '\t':
str = "\\t";
goto strpr;
case '\v':
str = "\\v";
goto strpr;
default:
break;
}
/*
* Multibyte characters are disabled for hexdump(1) for backwards
* compatibility and consistency (none of its other output formats
* recognize them correctly).
*/
converr = 0;
if (odmode && MB_CUR_MAX > 1) {
oclen = 0;
retry:
clen = mbrtowc(&wc, p, bufsize, &pr->mbstate);
if (clen == 0)
clen = 1;
else if (clen == (size_t)-1 || (clen == (size_t)-2 &&
p == peekbuf)) {
memset(&pr->mbstate, 0, sizeof(pr->mbstate));
if (p == peekbuf) {
/*
* We peeked ahead, but that didn't help --
* we either got an illegal sequence or still
* can't complete; restore original character.
*/
oclen = 0;
p = op;
}
wc = *p;
clen = 1;
converr = 1;
} else if (clen == (size_t)-2) {
/*
* Incomplete character; peek ahead and see if we
* can complete it.
*/
oclen = bufsize;
op = p;
bufsize = peek(p = peekbuf, MB_CUR_MAX);
goto retry;
}
clen += oclen;
} else {
wc = *p;
clen = 1;
}
if (!converr && iswprint(wc)) {
if (!odmode) {
*pr->cchar = 'c';
(void)printf(pr->fmt, (int)wc);
} else {
*pr->cchar = 'C';
assert(strcmp(pr->fmt, "%3C") == 0);
width = wcwidth(wc);
assert(width >= 0);
pad = 3 - width;
if (pad < 0)
pad = 0;
(void)printf("%*s%C", pad, "", wc);
pr->mbleft = clen - 1;
}
} else {
(void)sprintf(buf, "%03o", (int)*p);
str = buf;
strpr: *pr->cchar = 's';
(void)printf(pr->fmt, str);
}
}
void
conv_u(PR *pr, u_char *p)
{
static char const * list[] = {
"nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel",
"bs", "ht", "lf", "vt", "ff", "cr", "so", "si",
"dle", "dc1", "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 (odmode && *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 (odmode && *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);
}
}