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author | Glenn L McGrath <bug1@ihug.co.nz> | 2001-11-02 11:39:46 +0000 |
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committer | Glenn L McGrath <bug1@ihug.co.nz> | 2001-11-02 11:39:46 +0000 |
commit | 60281118d022a702c62c9047ba6998ef873917d4 (patch) | |
tree | c84573dea7b7461c7d2174391911075b1470e86e /coreutils/od.c | |
parent | b89637a037c362a4bfef26375bb8cd1ddfdc98e0 (diff) | |
download | busybox-w32-60281118d022a702c62c9047ba6998ef873917d4.tar.gz busybox-w32-60281118d022a702c62c9047ba6998ef873917d4.tar.bz2 busybox-w32-60281118d022a702c62c9047ba6998ef873917d4.zip |
Introduce od and hexdump applets
Diffstat (limited to 'coreutils/od.c')
-rw-r--r-- | coreutils/od.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/coreutils/od.c b/coreutils/od.c new file mode 100644 index 000000000..681af5c45 --- /dev/null +++ b/coreutils/od.c | |||
@@ -0,0 +1,270 @@ | |||
1 | /* | ||
2 | * od implementation for busybox | ||
3 | * Based on code from util-linux v 2.11l | ||
4 | * | ||
5 | * Copyright (c) 1990 | ||
6 | * The Regents of the University of California. All rights reserved. | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License as published by | ||
10 | * the Free Software Foundation; either version 2 of the License, or | ||
11 | * (at your option) any later version. | ||
12 | * | ||
13 | * This program is distributed in the hope that it will be useful, | ||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
16 | * General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU General Public License | ||
19 | * along with this program; if not, write to the Free Software | ||
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
21 | * | ||
22 | * Original copyright notice is retained at the end of this file. | ||
23 | */ | ||
24 | |||
25 | #include <ctype.h> | ||
26 | #include <getopt.h> | ||
27 | #include <stdlib.h> | ||
28 | #include "dump.h" | ||
29 | #include "busybox.h" | ||
30 | |||
31 | extern FS *fshead; /* head of format strings */ | ||
32 | extern int blocksize; /* data block size */ | ||
33 | extern int length; /* max bytes to read */ | ||
34 | |||
35 | #define ishexdigit(c) \ | ||
36 | ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F')) | ||
37 | |||
38 | static void | ||
39 | odoffset(int argc, char ***argvp) | ||
40 | { | ||
41 | extern off_t skip; | ||
42 | register char *num, *p; | ||
43 | int base; | ||
44 | char *end; | ||
45 | |||
46 | /* | ||
47 | * The offset syntax of od(1) was genuinely bizarre. First, if | ||
48 | * it started with a plus it had to be an offset. Otherwise, if | ||
49 | * there were at least two arguments, a number or lower-case 'x' | ||
50 | * followed by a number makes it an offset. By default it was | ||
51 | * octal; if it started with 'x' or '0x' it was hex. If it ended | ||
52 | * in a '.', it was decimal. If a 'b' or 'B' was appended, it | ||
53 | * multiplied the number by 512 or 1024 byte units. There was | ||
54 | * no way to assign a block count to a hex offset. | ||
55 | * | ||
56 | * We assumes it's a file if the offset is bad. | ||
57 | */ | ||
58 | p = **argvp; | ||
59 | if (*p != '+' && (argc < 2 || | ||
60 | (!isdigit(p[0]) && (p[0] != 'x' || !ishexdigit(p[1]))))) | ||
61 | return; | ||
62 | |||
63 | base = 0; | ||
64 | /* | ||
65 | * skip over leading '+', 'x[0-9a-fA-f]' or '0x', and | ||
66 | * set base. | ||
67 | */ | ||
68 | if (p[0] == '+') | ||
69 | ++p; | ||
70 | if (p[0] == 'x' && ishexdigit(p[1])) { | ||
71 | ++p; | ||
72 | base = 16; | ||
73 | } else if (p[0] == '0' && p[1] == 'x') { | ||
74 | p += 2; | ||
75 | base = 16; | ||
76 | } | ||
77 | |||
78 | /* skip over the number */ | ||
79 | if (base == 16) | ||
80 | for (num = p; ishexdigit(*p); ++p); | ||
81 | else | ||
82 | for (num = p; isdigit(*p); ++p); | ||
83 | |||
84 | /* check for no number */ | ||
85 | if (num == p) | ||
86 | return; | ||
87 | |||
88 | /* if terminates with a '.', base is decimal */ | ||
89 | if (*p == '.') { | ||
90 | if (base) | ||
91 | return; | ||
92 | base = 10; | ||
93 | } | ||
94 | |||
95 | skip = strtol(num, &end, base ? base : 8); | ||
96 | |||
97 | /* if end isn't the same as p, we got a non-octal digit */ | ||
98 | if (end != p) | ||
99 | skip = 0; | ||
100 | else { | ||
101 | if (*p) { | ||
102 | if (*p == 'b') | ||
103 | skip *= 512; | ||
104 | else if (*p == 'B') | ||
105 | skip *= 1024; | ||
106 | ++p; | ||
107 | } | ||
108 | if (*p) | ||
109 | skip = 0; | ||
110 | else { | ||
111 | ++*argvp; | ||
112 | /* | ||
113 | * If the offset uses a non-octal base, the base of | ||
114 | * the offset is changed as well. This isn't pretty, | ||
115 | * but it's easy. | ||
116 | */ | ||
117 | #define TYPE_OFFSET 7 | ||
118 | if (base == 16) { | ||
119 | fshead->nextfu->fmt[TYPE_OFFSET] = 'x'; | ||
120 | fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x'; | ||
121 | } else if (base == 10) { | ||
122 | fshead->nextfu->fmt[TYPE_OFFSET] = 'd'; | ||
123 | fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd'; | ||
124 | } | ||
125 | } | ||
126 | } | ||
127 | } | ||
128 | |||
129 | static void odprecede(void) | ||
130 | { | ||
131 | static int first = 1; | ||
132 | |||
133 | if (first) { | ||
134 | first = 0; | ||
135 | add("\"%07.7_Ao\n\""); | ||
136 | add("\"%07.7_ao \""); | ||
137 | } else | ||
138 | add("\" \""); | ||
139 | } | ||
140 | |||
141 | int od_main(int argc, char **argv) | ||
142 | { | ||
143 | int ch; | ||
144 | extern enum _vflag vflag; | ||
145 | vflag = FIRST; | ||
146 | length = -1; | ||
147 | |||
148 | while ((ch = getopt(argc, argv, "aBbcDdeFfHhIiLlOoPpswvXx")) != EOF) | ||
149 | switch (ch) { | ||
150 | case 'a': | ||
151 | odprecede(); | ||
152 | add("16/1 \"%3_u \" \"\\n\""); | ||
153 | break; | ||
154 | case 'B': | ||
155 | case 'o': | ||
156 | odprecede(); | ||
157 | add("8/2 \" %06o \" \"\\n\""); | ||
158 | break; | ||
159 | case 'b': | ||
160 | odprecede(); | ||
161 | add("16/1 \"%03o \" \"\\n\""); | ||
162 | break; | ||
163 | case 'c': | ||
164 | odprecede(); | ||
165 | add("16/1 \"%3_c \" \"\\n\""); | ||
166 | break; | ||
167 | case 'd': | ||
168 | odprecede(); | ||
169 | add("8/2 \" %05u \" \"\\n\""); | ||
170 | break; | ||
171 | case 'D': | ||
172 | odprecede(); | ||
173 | add("4/4 \" %010u \" \"\\n\""); | ||
174 | break; | ||
175 | case 'e': /* undocumented in od */ | ||
176 | case 'F': | ||
177 | odprecede(); | ||
178 | add("2/8 \" %21.14e \" \"\\n\""); | ||
179 | break; | ||
180 | |||
181 | case 'f': | ||
182 | odprecede(); | ||
183 | add("4/4 \" %14.7e \" \"\\n\""); | ||
184 | break; | ||
185 | case 'H': | ||
186 | case 'X': | ||
187 | odprecede(); | ||
188 | add("4/4 \" %08x \" \"\\n\""); | ||
189 | break; | ||
190 | case 'h': | ||
191 | case 'x': | ||
192 | odprecede(); | ||
193 | add("8/2 \" %04x \" \"\\n\""); | ||
194 | break; | ||
195 | case 'I': | ||
196 | case 'L': | ||
197 | case 'l': | ||
198 | odprecede(); | ||
199 | add("4/4 \" %11d \" \"\\n\""); | ||
200 | break; | ||
201 | case 'i': | ||
202 | odprecede(); | ||
203 | add("8/2 \" %6d \" \"\\n\""); | ||
204 | break; | ||
205 | case 'O': | ||
206 | odprecede(); | ||
207 | add("4/4 \" %011o \" \"\\n\""); | ||
208 | break; | ||
209 | case 'v': | ||
210 | vflag = ALL; | ||
211 | break; | ||
212 | case 'P': | ||
213 | case 'p': | ||
214 | case 's': | ||
215 | case 'w': | ||
216 | case '?': | ||
217 | default: | ||
218 | error_msg("od: od(1) has been deprecated for hexdump(1).\n"); | ||
219 | if (ch != '?') { | ||
220 | error_msg("od: hexdump(1) compatibility doesn't support the -%c option%s\n", | ||
221 | ch, ch == 's' ? "; see strings(1)." : "."); | ||
222 | } | ||
223 | show_usage(); | ||
224 | } | ||
225 | |||
226 | if (!fshead) { | ||
227 | add("\"%07.7_Ao\n\""); | ||
228 | add("\"%07.7_ao \" 8/2 \"%06o \" \"\\n\""); | ||
229 | } | ||
230 | |||
231 | argc -= optind; | ||
232 | argv += optind; | ||
233 | |||
234 | odoffset(argc, &argv); | ||
235 | |||
236 | return(dump(argv)); | ||
237 | } | ||
238 | |||
239 | /*- | ||
240 | * Copyright (c) 1990 The Regents of the University of California. | ||
241 | * All rights reserved. | ||
242 | * | ||
243 | * Redistribution and use in source and binary forms, with or without | ||
244 | * modification, are permitted provided that the following conditions | ||
245 | * are met: | ||
246 | * 1. Redistributions of source code must retain the above copyright | ||
247 | * notice, this list of conditions and the following disclaimer. | ||
248 | * 2. Redistributions in binary form must reproduce the above copyright | ||
249 | * notice, this list of conditions and the following disclaimer in the | ||
250 | * documentation and/or other materials provided with the distribution. | ||
251 | * 3. All advertising materials mentioning features or use of this software | ||
252 | * must display the following acknowledgement: | ||
253 | * This product includes software developed by the University of | ||
254 | * California, Berkeley and its contributors. | ||
255 | * 4. Neither the name of the University nor the names of its contributors | ||
256 | * may be used to endorse or promote products derived from this software | ||
257 | * without specific prior written permission. | ||
258 | * | ||
259 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
260 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
261 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
262 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
263 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
264 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
265 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
266 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
267 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
268 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
269 | * SUCH DAMAGE. | ||
270 | */ | ||