530 lines
11 KiB
C
530 lines
11 KiB
C
/*-
|
|
* 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
|
|
#if 0
|
|
static char sccsid[] = "@(#)parse.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
#endif /* not lint */
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include "hexdump.h"
|
|
|
|
FU *endfu; /* format at end-of-data */
|
|
|
|
void
|
|
addfile(const char *name)
|
|
{
|
|
unsigned char *p;
|
|
FILE *fp;
|
|
int ch;
|
|
char buf[2048 + 1];
|
|
|
|
if ((fp = fopen(name, "r")) == NULL)
|
|
err(1, "%s", name);
|
|
while (fgets(buf, sizeof(buf), fp)) {
|
|
if (!(p = strchr(buf, '\n'))) {
|
|
warnx("line too long");
|
|
while ((ch = getchar()) != '\n' && ch != EOF);
|
|
continue;
|
|
}
|
|
*p = '\0';
|
|
for (p = buf; *p && isspace(*p); ++p);
|
|
if (!*p || *p == '#')
|
|
continue;
|
|
add(p);
|
|
}
|
|
(void)fclose(fp);
|
|
}
|
|
|
|
void
|
|
add(const char *fmt)
|
|
{
|
|
unsigned const char *p, *savep;
|
|
static FS **nextfs;
|
|
FS *tfs;
|
|
FU *tfu, **nextfu;
|
|
|
|
/* start new linked list of format units */
|
|
if ((tfs = calloc(1, sizeof(FS))) == NULL)
|
|
err(1, NULL);
|
|
if (!fshead)
|
|
fshead = tfs;
|
|
else
|
|
*nextfs = tfs;
|
|
nextfs = &tfs->nextfs;
|
|
nextfu = &tfs->nextfu;
|
|
|
|
/* take the format string and break it up into format units */
|
|
for (p = fmt;;) {
|
|
/* skip leading white space */
|
|
for (; isspace(*p); ++p);
|
|
if (!*p)
|
|
break;
|
|
|
|
/* allocate a new format unit and link it in */
|
|
if ((tfu = calloc(1, sizeof(FU))) == NULL)
|
|
err(1, NULL);
|
|
*nextfu = tfu;
|
|
nextfu = &tfu->nextfu;
|
|
tfu->reps = 1;
|
|
|
|
/* if leading digit, repetition count */
|
|
if (isdigit(*p)) {
|
|
for (savep = p; isdigit(*p); ++p);
|
|
if (!isspace(*p) && *p != '/')
|
|
badfmt(fmt);
|
|
/* may overwrite either white space or slash */
|
|
tfu->reps = atoi(savep);
|
|
tfu->flags = F_SETREP;
|
|
/* skip trailing white space */
|
|
for (++p; isspace(*p); ++p);
|
|
}
|
|
|
|
/* skip slash and trailing white space */
|
|
if (*p == '/')
|
|
while (isspace(*++p));
|
|
|
|
/* byte count */
|
|
if (isdigit(*p)) {
|
|
for (savep = p; isdigit(*p); ++p);
|
|
if (!isspace(*p))
|
|
badfmt(fmt);
|
|
tfu->bcnt = atoi(savep);
|
|
/* skip trailing white space */
|
|
for (++p; isspace(*p); ++p);
|
|
}
|
|
|
|
/* format */
|
|
if (*p != '"')
|
|
badfmt(fmt);
|
|
for (savep = ++p; *p != '"';)
|
|
if (*p++ == 0)
|
|
badfmt(fmt);
|
|
if (!(tfu->fmt = malloc(p - savep + 1)))
|
|
err(1, NULL);
|
|
(void) strlcpy(tfu->fmt, savep, p - savep + 1);
|
|
escape(tfu->fmt);
|
|
p++;
|
|
}
|
|
}
|
|
|
|
static const char *spec = ".#-+ 0123456789";
|
|
|
|
int
|
|
size(FS *fs)
|
|
{
|
|
FU *fu;
|
|
int bcnt, cursize;
|
|
unsigned char *fmt;
|
|
int prec;
|
|
|
|
/* figure out the data block size needed for each format unit */
|
|
for (cursize = 0, fu = fs->nextfu; fu; fu = fu->nextfu) {
|
|
if (fu->bcnt) {
|
|
cursize += fu->bcnt * fu->reps;
|
|
continue;
|
|
}
|
|
for (bcnt = prec = 0, fmt = fu->fmt; *fmt; ++fmt) {
|
|
if (*fmt != '%')
|
|
continue;
|
|
/*
|
|
* skip any special chars -- save precision in
|
|
* case it's a %s format.
|
|
*/
|
|
while (*++fmt != 0 && strchr(spec + 1, *fmt) != NULL)
|
|
;
|
|
if (*fmt == 0)
|
|
badnoconv();
|
|
if (*fmt == '.' && isdigit(*++fmt)) {
|
|
prec = atoi(fmt);
|
|
while (isdigit(*++fmt));
|
|
}
|
|
switch(*fmt) {
|
|
case 'c':
|
|
bcnt += 1;
|
|
break;
|
|
case 'd': case 'i': case 'o': case 'u':
|
|
case 'x': case 'X':
|
|
bcnt += 4;
|
|
break;
|
|
case 'e': case 'E': case 'f': case 'g': case 'G':
|
|
bcnt += 8;
|
|
break;
|
|
case 's':
|
|
bcnt += prec;
|
|
break;
|
|
case '_':
|
|
switch(*++fmt) {
|
|
case 'c': case 'p': case 'u':
|
|
bcnt += 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
cursize += bcnt * fu->reps;
|
|
}
|
|
return (cursize);
|
|
}
|
|
|
|
void
|
|
rewrite(FS *fs)
|
|
{
|
|
enum { NOTOKAY, USEBCNT, USEPREC } sokay;
|
|
PR *pr, **nextpr;
|
|
FU *fu;
|
|
unsigned char *p1, *p2, *fmtp;
|
|
char savech, cs[3];
|
|
int nconv, prec;
|
|
|
|
prec = 0;
|
|
|
|
for (fu = fs->nextfu; fu; fu = fu->nextfu) {
|
|
/*
|
|
* Break each format unit into print units; each conversion
|
|
* character gets its own.
|
|
*/
|
|
nextpr = &fu->nextpr;
|
|
for (nconv = 0, fmtp = fu->fmt; *fmtp; nextpr = &pr->nextpr) {
|
|
if ((pr = calloc(1, sizeof(PR))) == NULL)
|
|
err(1, NULL);
|
|
*nextpr = pr;
|
|
|
|
/* Skip preceding text and up to the next % sign. */
|
|
for (p1 = fmtp; *p1 && *p1 != '%'; ++p1);
|
|
|
|
/* Only text in the string. */
|
|
if (!*p1) {
|
|
pr->fmt = fmtp;
|
|
pr->flags = F_TEXT;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Get precision for %s -- if have a byte count, don't
|
|
* need it.
|
|
*/
|
|
if (fu->bcnt) {
|
|
sokay = USEBCNT;
|
|
/* Skip to conversion character. */
|
|
while (*++p1 != 0 && strchr(spec, *p1) != NULL)
|
|
;
|
|
if (*p1 == 0)
|
|
badnoconv();
|
|
} else {
|
|
/* Skip any special chars, field width. */
|
|
while (*++p1 != 0 && strchr(spec + 1, *p1) != NULL)
|
|
;
|
|
if (*p1 == 0)
|
|
badnoconv();
|
|
if (*p1 == '.' && isdigit(*++p1)) {
|
|
sokay = USEPREC;
|
|
prec = atoi(p1);
|
|
while (isdigit(*++p1));
|
|
} else
|
|
sokay = NOTOKAY;
|
|
}
|
|
|
|
p2 = *p1 ? p1 + 1 : p1; /* Set end pointer -- make sure
|
|
* that it's non-NUL/-NULL first
|
|
* though. */
|
|
cs[0] = *p1; /* Set conversion string. */
|
|
cs[1] = '\0';
|
|
|
|
/*
|
|
* Figure out the byte count for each conversion;
|
|
* rewrite the format as necessary, set up blank-
|
|
* padding for end of data.
|
|
*/
|
|
switch(cs[0]) {
|
|
case 'c':
|
|
pr->flags = F_CHAR;
|
|
switch(fu->bcnt) {
|
|
case 0: case 1:
|
|
pr->bcnt = 1;
|
|
break;
|
|
default:
|
|
p1[1] = '\0';
|
|
badcnt(p1);
|
|
}
|
|
break;
|
|
case 'd': case 'i':
|
|
pr->flags = F_INT;
|
|
goto isint;
|
|
case 'o': case 'u': case 'x': case 'X':
|
|
pr->flags = F_UINT;
|
|
isint: cs[2] = '\0';
|
|
cs[1] = cs[0];
|
|
cs[0] = 'q';
|
|
switch(fu->bcnt) {
|
|
case 0: case 4:
|
|
pr->bcnt = 4;
|
|
break;
|
|
case 1:
|
|
pr->bcnt = 1;
|
|
break;
|
|
case 2:
|
|
pr->bcnt = 2;
|
|
break;
|
|
default:
|
|
p1[1] = '\0';
|
|
badcnt(p1);
|
|
}
|
|
break;
|
|
case 'e': case 'E': case 'f': case 'g': case 'G':
|
|
pr->flags = F_DBL;
|
|
switch(fu->bcnt) {
|
|
case 0: case 8:
|
|
pr->bcnt = 8;
|
|
break;
|
|
case 4:
|
|
pr->bcnt = 4;
|
|
break;
|
|
default:
|
|
if (fu->bcnt == sizeof(long double)) {
|
|
cs[2] = '\0';
|
|
cs[1] = cs[0];
|
|
cs[0] = 'L';
|
|
pr->bcnt = sizeof(long double);
|
|
} else {
|
|
p1[1] = '\0';
|
|
badcnt(p1);
|
|
}
|
|
}
|
|
break;
|
|
case 's':
|
|
pr->flags = F_STR;
|
|
switch(sokay) {
|
|
case NOTOKAY:
|
|
badsfmt();
|
|
case USEBCNT:
|
|
pr->bcnt = fu->bcnt;
|
|
break;
|
|
case USEPREC:
|
|
pr->bcnt = prec;
|
|
break;
|
|
}
|
|
break;
|
|
case '_':
|
|
++p2;
|
|
switch(p1[1]) {
|
|
case 'A':
|
|
endfu = fu;
|
|
fu->flags |= F_IGNORE;
|
|
/* FALLTHROUGH */
|
|
case 'a':
|
|
pr->flags = F_ADDRESS;
|
|
++p2;
|
|
switch(p1[2]) {
|
|
case 'd': case 'o': case'x':
|
|
cs[0] = 'q';
|
|
cs[1] = p1[2];
|
|
cs[2] = '\0';
|
|
break;
|
|
default:
|
|
p1[3] = '\0';
|
|
badconv(p1);
|
|
}
|
|
break;
|
|
case 'c':
|
|
pr->flags = F_C;
|
|
/* cs[0] = 'c'; set in conv_c */
|
|
goto isint2;
|
|
case 'p':
|
|
pr->flags = F_P;
|
|
cs[0] = 'c';
|
|
goto isint2;
|
|
case 'u':
|
|
pr->flags = F_U;
|
|
/* cs[0] = 'c'; set in conv_u */
|
|
isint2: switch(fu->bcnt) {
|
|
case 0: case 1:
|
|
pr->bcnt = 1;
|
|
break;
|
|
default:
|
|
p1[2] = '\0';
|
|
badcnt(p1);
|
|
}
|
|
break;
|
|
default:
|
|
p1[2] = '\0';
|
|
badconv(p1);
|
|
}
|
|
break;
|
|
default:
|
|
p1[1] = '\0';
|
|
badconv(p1);
|
|
}
|
|
|
|
/*
|
|
* Copy to PR format string, set conversion character
|
|
* pointer, update original.
|
|
*/
|
|
savech = *p2;
|
|
p1[0] = '\0';
|
|
if (asprintf(&pr->fmt, "%s%s", fmtp, cs) == -1)
|
|
err(1, NULL);
|
|
*p2 = savech;
|
|
pr->cchar = pr->fmt + (p1 - fmtp);
|
|
fmtp = p2;
|
|
|
|
/* Only one conversion character if byte count. */
|
|
if (!(pr->flags&F_ADDRESS) && fu->bcnt && nconv++)
|
|
errx(1, "byte count with multiple conversion characters");
|
|
}
|
|
/*
|
|
* If format unit byte count not specified, figure it out
|
|
* so can adjust rep count later.
|
|
*/
|
|
if (!fu->bcnt)
|
|
for (pr = fu->nextpr; pr; pr = pr->nextpr)
|
|
fu->bcnt += pr->bcnt;
|
|
}
|
|
/*
|
|
* If the format string interprets any data at all, and it's
|
|
* not the same as the blocksize, and its last format unit
|
|
* interprets any data at all, and has no iteration count,
|
|
* repeat it as necessary.
|
|
*
|
|
* If, rep count is greater than 1, no trailing whitespace
|
|
* gets output from the last iteration of the format unit.
|
|
*/
|
|
for (fu = fs->nextfu; fu; fu = fu->nextfu) {
|
|
if (!fu->nextfu && fs->bcnt < blocksize &&
|
|
!(fu->flags&F_SETREP) && fu->bcnt)
|
|
fu->reps += (blocksize - fs->bcnt) / fu->bcnt;
|
|
if (fu->reps > 1) {
|
|
for (pr = fu->nextpr;; pr = pr->nextpr)
|
|
if (!pr->nextpr)
|
|
break;
|
|
for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
|
|
p2 = isspace(*p1) ? p1 : NULL;
|
|
if (p2)
|
|
pr->nospace = p2;
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
for (fu = fs->nextfu; fu; fu = fu->nextfu) {
|
|
(void)printf("fmt:");
|
|
for (pr = fu->nextpr; pr; pr = pr->nextpr)
|
|
(void)printf(" {%s}", pr->fmt);
|
|
(void)printf("\n");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void
|
|
escape(char *p1)
|
|
{
|
|
char *p2;
|
|
|
|
/* alphabetic escape sequences have to be done in place */
|
|
for (p2 = p1;; p1++, p2++) {
|
|
if (*p1 == '\\') {
|
|
p1++;
|
|
switch(*p1) {
|
|
case '\0':
|
|
*p2 = '\\';
|
|
*++p2 = '\0';
|
|
return;
|
|
case 'a':
|
|
/* *p2 = '\a'; */
|
|
*p2 = '\007';
|
|
break;
|
|
case 'b':
|
|
*p2 = '\b';
|
|
break;
|
|
case 'f':
|
|
*p2 = '\f';
|
|
break;
|
|
case 'n':
|
|
*p2 = '\n';
|
|
break;
|
|
case 'r':
|
|
*p2 = '\r';
|
|
break;
|
|
case 't':
|
|
*p2 = '\t';
|
|
break;
|
|
case 'v':
|
|
*p2 = '\v';
|
|
break;
|
|
default:
|
|
*p2 = *p1;
|
|
break;
|
|
}
|
|
} else {
|
|
*p2 = *p1;
|
|
if (*p1 == '\0')
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
badcnt(const char *s)
|
|
{
|
|
errx(1, "%s: bad byte count", s);
|
|
}
|
|
|
|
void
|
|
badsfmt(void)
|
|
{
|
|
errx(1, "%%s: requires a precision or a byte count");
|
|
}
|
|
|
|
void
|
|
badfmt(const char *fmt)
|
|
{
|
|
errx(1, "\"%s\": bad format", fmt);
|
|
}
|
|
|
|
void
|
|
badconv(const char *ch)
|
|
{
|
|
errx(1, "%%%s: bad conversion character", ch);
|
|
}
|
|
|
|
void
|
|
badnoconv(void)
|
|
{
|
|
errx(1, "missing conversion character");
|
|
}
|