273 lines
6.8 KiB
C
273 lines
6.8 KiB
C
/*
|
|
* od implementation for busybox
|
|
* Based on code from util-linux v 2.11l
|
|
*
|
|
* Copyright (c) 1990
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* Original copyright notice is retained at the end of this file.
|
|
*/
|
|
|
|
#include <ctype.h>
|
|
#include <getopt.h>
|
|
#include <stdlib.h>
|
|
#include "dump.h"
|
|
#include "busybox.h"
|
|
|
|
extern FS *fshead; /* head of format strings */
|
|
extern int blocksize; /* data block size */
|
|
extern int length; /* max bytes to read */
|
|
|
|
#define ishexdigit(c) \
|
|
((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'))
|
|
|
|
static void
|
|
odoffset(int argc, char ***argvp)
|
|
{
|
|
extern off_t skip;
|
|
register char *num, *p;
|
|
int base;
|
|
char *end;
|
|
|
|
/*
|
|
* The offset syntax of od(1) was genuinely bizarre. First, if
|
|
* it started with a plus it had to be an offset. Otherwise, if
|
|
* there were at least two arguments, a number or lower-case 'x'
|
|
* followed by a number makes it an offset. By default it was
|
|
* octal; if it started with 'x' or '0x' it was hex. If it ended
|
|
* in a '.', it was decimal. If a 'b' or 'B' was appended, it
|
|
* multiplied the number by 512 or 1024 byte units. There was
|
|
* no way to assign a block count to a hex offset.
|
|
*
|
|
* We assumes it's a file if the offset is bad.
|
|
*/
|
|
p = **argvp;
|
|
|
|
if (!p) {
|
|
/* hey someone is probably piping to us ... */
|
|
return;
|
|
}
|
|
|
|
if (*p != '+' && (argc < 2 ||
|
|
(!isdigit(p[0]) && (p[0] != 'x' || !ishexdigit(p[1])))))
|
|
return;
|
|
|
|
base = 0;
|
|
/*
|
|
* skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
|
|
* set base.
|
|
*/
|
|
if (p[0] == '+')
|
|
++p;
|
|
if (p[0] == 'x' && ishexdigit(p[1])) {
|
|
++p;
|
|
base = 16;
|
|
} else if (p[0] == '0' && p[1] == 'x') {
|
|
p += 2;
|
|
base = 16;
|
|
}
|
|
|
|
/* skip over the number */
|
|
if (base == 16)
|
|
for (num = p; ishexdigit(*p); ++p);
|
|
else
|
|
for (num = p; isdigit(*p); ++p);
|
|
|
|
/* check for no number */
|
|
if (num == p)
|
|
return;
|
|
|
|
/* if terminates with a '.', base is decimal */
|
|
if (*p == '.') {
|
|
if (base)
|
|
return;
|
|
base = 10;
|
|
}
|
|
|
|
skip = strtol(num, &end, base ? base : 8);
|
|
|
|
/* if end isn't the same as p, we got a non-octal digit */
|
|
if (end != p)
|
|
skip = 0;
|
|
else {
|
|
if (*p) {
|
|
if (*p == 'b')
|
|
skip *= 512;
|
|
else if (*p == 'B')
|
|
skip *= 1024;
|
|
++p;
|
|
}
|
|
if (*p)
|
|
skip = 0;
|
|
else {
|
|
++*argvp;
|
|
/*
|
|
* If the offset uses a non-octal base, the base of
|
|
* the offset is changed as well. This isn't pretty,
|
|
* but it's easy.
|
|
*/
|
|
#define TYPE_OFFSET 7
|
|
if (base == 16) {
|
|
fshead->nextfu->fmt[TYPE_OFFSET] = 'x';
|
|
fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x';
|
|
} else if (base == 10) {
|
|
fshead->nextfu->fmt[TYPE_OFFSET] = 'd';
|
|
fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void odprecede(void)
|
|
{
|
|
static int first = 1;
|
|
|
|
if (first) {
|
|
first = 0;
|
|
add("\"%07.7_Ao\n\"");
|
|
add("\"%07.7_ao \"");
|
|
} else
|
|
add("\" \"");
|
|
}
|
|
|
|
int od_main(int argc, char **argv)
|
|
{
|
|
int ch;
|
|
extern enum _vflag vflag;
|
|
vflag = FIRST;
|
|
length = -1;
|
|
|
|
while ((ch = getopt(argc, argv, "aBbcDdeFfHhIiLlOoPpswvXx")) != EOF)
|
|
switch (ch) {
|
|
case 'a':
|
|
odprecede();
|
|
add("16/1 \"%3_u \" \"\\n\"");
|
|
break;
|
|
case 'B':
|
|
case 'o':
|
|
odprecede();
|
|
add("8/2 \" %06o \" \"\\n\"");
|
|
break;
|
|
case 'b':
|
|
odprecede();
|
|
add("16/1 \"%03o \" \"\\n\"");
|
|
break;
|
|
case 'c':
|
|
odprecede();
|
|
add("16/1 \"%3_c \" \"\\n\"");
|
|
break;
|
|
case 'd':
|
|
odprecede();
|
|
add("8/2 \" %05u \" \"\\n\"");
|
|
break;
|
|
case 'D':
|
|
odprecede();
|
|
add("4/4 \" %010u \" \"\\n\"");
|
|
break;
|
|
case 'e': /* undocumented in od */
|
|
case 'F':
|
|
odprecede();
|
|
add("2/8 \" %21.14e \" \"\\n\"");
|
|
break;
|
|
|
|
case 'f':
|
|
odprecede();
|
|
add("4/4 \" %14.7e \" \"\\n\"");
|
|
break;
|
|
case 'H':
|
|
case 'X':
|
|
odprecede();
|
|
add("4/4 \" %08x \" \"\\n\"");
|
|
break;
|
|
case 'h':
|
|
case 'x':
|
|
odprecede();
|
|
add("8/2 \" %04x \" \"\\n\"");
|
|
break;
|
|
case 'I':
|
|
case 'L':
|
|
case 'l':
|
|
odprecede();
|
|
add("4/4 \" %11d \" \"\\n\"");
|
|
break;
|
|
case 'i':
|
|
odprecede();
|
|
add("8/2 \" %6d \" \"\\n\"");
|
|
break;
|
|
case 'O':
|
|
odprecede();
|
|
add("4/4 \" %011o \" \"\\n\"");
|
|
break;
|
|
case 'v':
|
|
vflag = ALL;
|
|
break;
|
|
case 'P':
|
|
case 'p':
|
|
case 's':
|
|
case 'w':
|
|
case '?':
|
|
default:
|
|
error_msg("od: od(1) has been deprecated for hexdump(1).\n");
|
|
if (ch != '?') {
|
|
error_msg("od: hexdump(1) compatibility doesn't support the -%c option%s\n",
|
|
ch, ch == 's' ? "; see strings(1)." : ".");
|
|
}
|
|
show_usage();
|
|
}
|
|
|
|
if (!fshead) {
|
|
add("\"%07.7_Ao\n\"");
|
|
add("\"%07.7_ao \" 8/2 \"%06o \" \"\\n\"");
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
odoffset(argc, &argv);
|
|
|
|
return(dump(argv));
|
|
}
|
|
|
|
/*-
|
|
* Copyright (c) 1990 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.
|
|
*/
|