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/* vi: set sw=4 ts=4: */
/*
* 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.
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
* Original copyright notice is retained at the end of this file.
*/
//usage:#define od_trivial_usage
//usage: "[-aBbcDdeFfHhIiLlOovXx] " IF_DESKTOP("[-t TYPE] ") "[FILE]"
//usage:#define od_full_usage "\n\n"
//usage: "Write an unambiguous representation, octal bytes by default, of FILE\n"
//usage: "(or stdin) to stdout"
#include "libbb.h"
#if ENABLE_DESKTOP
/* This one provides -t (busybox's own build script needs it) */
#include "od_bloaty.c"
#else
#include "dump.h"
static void
odoffset(dumper_t *dumper, int argc, char ***argvp)
{
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') || !isxdigit(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' && isxdigit(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; isxdigit(*p); ++p)
continue;
else
for (num = p; isdigit(*p); ++p)
continue;
/* check for no number */
if (num == p)
return;
/* if terminates with a '.', base is decimal */
if (*p == '.') {
if (base)
return;
base = 10;
}
dumper->dump_skip = strtol(num, &end, base ? base : 8);
/* if end isn't the same as p, we got a non-octal digit */
if (end != p)
dumper->dump_skip = 0;
else {
if (*p) {
if (*p == 'b') {
dumper->dump_skip *= 512;
++p;
} else if (*p == 'B') {
dumper->dump_skip *= 1024;
++p;
}
}
if (*p)
dumper->dump_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
{
char x_or_d;
if (base == 16) {
x_or_d = 'x';
goto DO_X_OR_D;
}
if (base == 10) {
x_or_d = 'd';
DO_X_OR_D:
dumper->fshead->nextfu->fmt[TYPE_OFFSET]
= dumper->fshead->nextfs->nextfu->fmt[TYPE_OFFSET]
= x_or_d;
}
}
}
}
}
static const char *const add_strings[] = {
"16/1 \"%3_u \" \"\\n\"", /* a */
"8/2 \" %06o \" \"\\n\"", /* B, o */
"16/1 \"%03o \" \"\\n\"", /* b */
"16/1 \"%3_c \" \"\\n\"", /* c */
"8/2 \" %05u \" \"\\n\"", /* d */
"4/4 \" %010u \" \"\\n\"", /* D */
"2/8 \" %21.14e \" \"\\n\"", /* e (undocumented in od), F */
"4/4 \" %14.7e \" \"\\n\"", /* f */
"4/4 \" %08x \" \"\\n\"", /* H, X */
"8/2 \" %04x \" \"\\n\"", /* h, x */
"4/4 \" %11d \" \"\\n\"", /* I, L, l */
"8/2 \" %6d \" \"\\n\"", /* i */
"4/4 \" %011o \" \"\\n\"", /* O */
};
static const char od_opts[] ALIGN1 = "aBbcDdeFfHhIiLlOoXxv";
static const char od_o2si[] ALIGN1 = {
0, 1, 2, 3, 5,
4, 6, 6, 7, 8,
9, 0xa, 0xb, 0xa, 0xa,
0xb, 1, 8, 9,
};
int od_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int od_main(int argc, char **argv)
{
int ch;
int first = 1;
char *p;
dumper_t *dumper = alloc_dumper();
while ((ch = getopt(argc, argv, od_opts)) > 0) {
if (ch == 'v') {
dumper->dump_vflag = ALL;
} else if (((p = strchr(od_opts, ch)) != NULL) && (*p != '\0')) {
if (first) {
first = 0;
bb_dump_add(dumper, "\"%07.7_Ao\n\"");
bb_dump_add(dumper, "\"%07.7_ao \"");
} else {
bb_dump_add(dumper, "\" \"");
}
bb_dump_add(dumper, add_strings[(int)od_o2si[(p - od_opts)]]);
} else { /* P, p, s, w, or other unhandled */
bb_show_usage();
}
}
if (!dumper->fshead) {
bb_dump_add(dumper, "\"%07.7_Ao\n\"");
bb_dump_add(dumper, "\"%07.7_ao \" 8/2 \"%06o \" \"\\n\"");
}
argc -= optind;
argv += optind;
odoffset(dumper, argc, &argv);
return bb_dump_dump(dumper, argv);
}
#endif /* ENABLE_DESKTOP */
/*-
* 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.
*/
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