busybox/coreutils/od.c

/* 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 tarball for details.
 *
 * Original copyright notice is retained at the end of this file.
 */


#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"

#define isdecdigit(c) isdigit(c)
#define ishexdigit(c) (isxdigit)(c)

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
			|| (!isdecdigit(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)
			continue;
	else
		for (num = p; isdecdigit(*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.
 */
1	niro	532	/* vi: set sw=4 ts=4: */
2			/*
3			* od implementation for busybox
4			* Based on code from util-linux v 2.11l
5			*
6			* Copyright (c) 1990
7			* The Regents of the University of California. All rights reserved.
8			*
9			* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
10			*
11			* Original copyright notice is retained at the end of this file.
12			*/
13
14
15	niro	816	#include "libbb.h"
16	niro	532	#if ENABLE_DESKTOP
17			/* This one provides -t (busybox's own build script needs it) */
18			#include "od_bloaty.c"
19			#else
20
21			#include "dump.h"
22
23			#define isdecdigit(c) isdigit(c)
24			#define ishexdigit(c) (isxdigit)(c)
25
26			static void
27	niro	816	odoffset(dumper_t dumper, int argc, char **argvp)
28	niro	532	{
29			char num, p;
30			int base;
31			char *end;
32
33			/*
34			* The offset syntax of od(1) was genuinely bizarre. First, if
35			* it started with a plus it had to be an offset. Otherwise, if
36			* there were at least two arguments, a number or lower-case 'x'
37			* followed by a number makes it an offset. By default it was
38			* octal; if it started with 'x' or '0x' it was hex. If it ended
39			* in a '.', it was decimal. If a 'b' or 'B' was appended, it
40			* multiplied the number by 512 or 1024 byte units. There was
41			* no way to assign a block count to a hex offset.
42			*
43			* We assumes it's a file if the offset is bad.
44			*/
45			p = **argvp;
46
47			if (!p) {
48			/* hey someone is probably piping to us ... */
49			return;
50			}
51
52			if ((*p != '+')
53			&& (argc < 2
54			\|\| (!isdecdigit(p[0])
55			&& ((p[0] != 'x') \|\| !ishexdigit(p[1])))))
56			return;
57
58			base = 0;
59			/*
60	niro	816	* skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
61	niro	532	* set base.
62			*/
63			if (p[0] == '+')
64			++p;
65			if (p[0] == 'x' && ishexdigit(p[1])) {
66			++p;
67			base = 16;
68			} else if (p[0] == '0' && p[1] == 'x') {
69			p += 2;
70			base = 16;
71			}
72
73	niro	816	/* skip over the number */
74	niro	532	if (base == 16)
75	niro	816	for (num = p; ishexdigit(*p); ++p)
76			continue;
77	niro	532	else
78	niro	816	for (num = p; isdecdigit(*p); ++p)
79			continue;
80	niro	532
81			/* check for no number */
82			if (num == p)
83			return;
84
85			/* if terminates with a '.', base is decimal */
86			if (*p == '.') {
87			if (base)
88			return;
89			base = 10;
90			}
91
92	niro	816	dumper->dump_skip = strtol(num, &end, base ? base : 8);
93	niro	532
94			/* if end isn't the same as p, we got a non-octal digit */
95			if (end != p)
96	niro	816	dumper->dump_skip = 0;
97	niro	532	else {
98			if (*p) {
99			if (*p == 'b') {
100	niro	816	dumper->dump_skip *= 512;
101	niro	532	++p;
102			} else if (*p == 'B') {
103	niro	816	dumper->dump_skip *= 1024;
104	niro	532	++p;
105			}
106			}
107			if (*p)
108	niro	816	dumper->dump_skip = 0;
109	niro	532	else {
110			++*argvp;
111			/*
112			* If the offset uses a non-octal base, the base of
113			* the offset is changed as well. This isn't pretty,
114			* but it's easy.
115			*/
116			#define TYPE_OFFSET 7
117			{
118			char x_or_d;
119			if (base == 16) {
120			x_or_d = 'x';
121			goto DO_X_OR_D;
122			}
123			if (base == 10) {
124			x_or_d = 'd';
125	niro	816	DO_X_OR_D:
126			dumper->fshead->nextfu->fmt[TYPE_OFFSET]
127			= dumper->fshead->nextfs->nextfu->fmt[TYPE_OFFSET]
128	niro	532	= x_or_d;
129			}
130			}
131			}
132			}
133			}
134
135	niro	816	static const char *const add_strings[] = {
136	niro	532	"16/1 \"%3_u \" \"\\n\"", /* a */
137			"8/2 \" %06o \" \"\\n\"", /* B, o */
138			"16/1 \"%03o \" \"\\n\"", /* b */
139			"16/1 \"%3_c \" \"\\n\"", /* c */
140			"8/2 \" %05u \" \"\\n\"", /* d */
141			"4/4 \" %010u \" \"\\n\"", /* D */
142			"2/8 \" %21.14e \" \"\\n\"", /* e (undocumented in od), F */
143			"4/4 \" %14.7e \" \"\\n\"", /* f */
144			"4/4 \" %08x \" \"\\n\"", /* H, X */
145			"8/2 \" %04x \" \"\\n\"", /* h, x */
146			"4/4 \" %11d \" \"\\n\"", /* I, L, l */
147			"8/2 \" %6d \" \"\\n\"", /* i */
148			"4/4 \" %011o \" \"\\n\"", /* O */
149			};
150
151	niro	816	static const char od_opts[] ALIGN1 = "aBbcDdeFfHhIiLlOoXxv";
152	niro	532
153	niro	816	static const char od_o2si[] ALIGN1 = {
154	niro	532	0, 1, 2, 3, 5,
155			4, 6, 6, 7, 8,
156			9, 0xa, 0xb, 0xa, 0xa,
157			0xb, 1, 8, 9,
158			};
159
160	niro	816	int od_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
161	niro	532	int od_main(int argc, char **argv)
162			{
163			int ch;
164			int first = 1;
165			char *p;
166	niro	816	dumper_t *dumper = alloc_dumper();
167	niro	532
168			while ((ch = getopt(argc, argv, od_opts)) > 0) {
169			if (ch == 'v') {
170	niro	816	dumper->dump_vflag = ALL;
171	niro	532	} else if (((p = strchr(od_opts, ch)) != NULL) && (*p != '\0')) {
172			if (first) {
173			first = 0;
174	niro	816	bb_dump_add(dumper, "\"%07.7_Ao\n\"");
175			bb_dump_add(dumper, "\"%07.7_ao \"");
176	niro	532	} else {
177	niro	816	bb_dump_add(dumper, "\" \"");
178	niro	532	}
179	niro	816	bb_dump_add(dumper, add_strings[(int)od_o2si[(p - od_opts)]]);
180	niro	532	} else { /* P, p, s, w, or other unhandled */
181			bb_show_usage();
182			}
183			}
184	niro	816	if (!dumper->fshead) {
185			bb_dump_add(dumper, "\"%07.7_Ao\n\"");
186			bb_dump_add(dumper, "\"%07.7_ao \" 8/2 \"%06o \" \"\\n\"");
187	niro	532	}
188
189			argc -= optind;
190			argv += optind;
191
192	niro	816	odoffset(dumper, argc, &argv);
193	niro	532
194	niro	816	return bb_dump_dump(dumper, argv);
195	niro	532	}
196			#endif /* ENABLE_DESKTOP */
197
198			/*-
199			* Copyright (c) 1990 The Regents of the University of California.
200			* All rights reserved.
201			*
202			* Redistribution and use in source and binary forms, with or without
203			* modification, are permitted provided that the following conditions
204			* are met:
205			* 1. Redistributions of source code must retain the above copyright
206			* notice, this list of conditions and the following disclaimer.
207			* 2. Redistributions in binary form must reproduce the above copyright
208			* notice, this list of conditions and the following disclaimer in the
209			* documentation and/or other materials provided with the distribution.
210			* 3. Neither the name of the University nor the names of its contributors
211			* may be used to endorse or promote products derived from this software
212			* without specific prior written permission.
213			*
214			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
215			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
216			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
217			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
218			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
219			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
220			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
221			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
222			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
223			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
224			* SUCH DAMAGE.
225			*/