Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1 | /* od -- dump files in octal and other formats |
| 2 | Copyright (C) 92, 1995-2004 Free Software Foundation, Inc. |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU General Public License as published by |
| 6 | the Free Software Foundation; either version 2, or (at your option) |
| 7 | any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, write to the Free Software Foundation, |
| 16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 17 | |
| 18 | /* Written by Jim Meyering. */ |
| 19 | |
Denis Vlasenko | d18f52b | 2008-03-02 12:53:15 +0000 | [diff] [blame] | 20 | /* Busyboxed by Denys Vlasenko |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 21 | |
| 22 | Based on od.c from coreutils-5.2.1 |
| 23 | Top bloat sources: |
| 24 | |
| 25 | 00000073 t parse_old_offset |
| 26 | 0000007b t get_lcm |
| 27 | 00000090 r long_options |
| 28 | 00000092 t print_named_ascii |
| 29 | 000000bf t print_ascii |
| 30 | 00000168 t write_block |
| 31 | 00000366 t decode_format_string |
| 32 | 00000a71 T od_main |
| 33 | |
| 34 | Tested for compat with coreutils 6.3 |
| 35 | using this script. Minor differences fixed. |
| 36 | |
| 37 | #!/bin/sh |
| 38 | echo STD |
| 39 | time /path/to/coreutils/od \ |
| 40 | ...params... \ |
| 41 | >std |
| 42 | echo Exit code $? |
| 43 | echo BBOX |
| 44 | time ./busybox od \ |
| 45 | ...params... \ |
| 46 | >bbox |
| 47 | echo Exit code $? |
| 48 | diff -u -a std bbox >bbox.diff || { echo Different!; sleep 1; } |
| 49 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 50 | */ |
| 51 | |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 52 | #include "libbb.h" |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 53 | |
| 54 | #define assert(a) ((void)0) |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 55 | |
| 56 | /* Check for 0x7f is a coreutils 6.3 addition */ |
| 57 | #define ISPRINT(c) (((c)>=' ') && (c) != 0x7f) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 58 | |
| 59 | typedef long double longdouble_t; |
| 60 | typedef unsigned long long ulonglong_t; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 61 | typedef long long llong; |
| 62 | |
| 63 | #if ENABLE_LFS |
| 64 | # define xstrtooff_sfx xstrtoull_sfx |
| 65 | #else |
| 66 | # define xstrtooff_sfx xstrtoul_sfx |
| 67 | #endif |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 68 | |
| 69 | /* The default number of input bytes per output line. */ |
| 70 | #define DEFAULT_BYTES_PER_BLOCK 16 |
| 71 | |
| 72 | /* The number of decimal digits of precision in a float. */ |
| 73 | #ifndef FLT_DIG |
| 74 | # define FLT_DIG 7 |
| 75 | #endif |
| 76 | |
| 77 | /* The number of decimal digits of precision in a double. */ |
| 78 | #ifndef DBL_DIG |
| 79 | # define DBL_DIG 15 |
| 80 | #endif |
| 81 | |
| 82 | /* The number of decimal digits of precision in a long double. */ |
| 83 | #ifndef LDBL_DIG |
| 84 | # define LDBL_DIG DBL_DIG |
| 85 | #endif |
| 86 | |
| 87 | enum size_spec { |
| 88 | NO_SIZE, |
| 89 | CHAR, |
| 90 | SHORT, |
| 91 | INT, |
| 92 | LONG, |
| 93 | LONG_LONG, |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 94 | FLOAT_SINGLE, |
| 95 | FLOAT_DOUBLE, |
| 96 | FLOAT_LONG_DOUBLE, |
| 97 | N_SIZE_SPECS |
| 98 | }; |
| 99 | |
| 100 | enum output_format { |
| 101 | SIGNED_DECIMAL, |
| 102 | UNSIGNED_DECIMAL, |
| 103 | OCTAL, |
| 104 | HEXADECIMAL, |
| 105 | FLOATING_POINT, |
| 106 | NAMED_CHARACTER, |
| 107 | CHARACTER |
| 108 | }; |
| 109 | |
| 110 | /* Each output format specification (from '-t spec' or from |
| 111 | old-style options) is represented by one of these structures. */ |
| 112 | struct tspec { |
| 113 | enum output_format fmt; |
| 114 | enum size_spec size; |
| 115 | void (*print_function) (size_t, const char *, const char *); |
| 116 | char *fmt_string; |
| 117 | int hexl_mode_trailer; |
| 118 | int field_width; |
| 119 | }; |
| 120 | |
| 121 | /* Convert the number of 8-bit bytes of a binary representation to |
| 122 | the number of characters (digits + sign if the type is signed) |
| 123 | required to represent the same quantity in the specified base/type. |
| 124 | For example, a 32-bit (4-byte) quantity may require a field width |
| 125 | as wide as the following for these types: |
| 126 | 11 unsigned octal |
| 127 | 11 signed decimal |
| 128 | 10 unsigned decimal |
| 129 | 8 unsigned hexadecimal */ |
| 130 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 131 | static const uint8_t bytes_to_oct_digits[] ALIGN1 = |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 132 | {0, 3, 6, 8, 11, 14, 16, 19, 22, 25, 27, 30, 32, 35, 38, 41, 43}; |
| 133 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 134 | static const uint8_t bytes_to_signed_dec_digits[] ALIGN1 = |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 135 | {1, 4, 6, 8, 11, 13, 16, 18, 20, 23, 25, 28, 30, 33, 35, 37, 40}; |
| 136 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 137 | static const uint8_t bytes_to_unsigned_dec_digits[] ALIGN1 = |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 138 | {0, 3, 5, 8, 10, 13, 15, 17, 20, 22, 25, 27, 29, 32, 34, 37, 39}; |
| 139 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 140 | static const uint8_t bytes_to_hex_digits[] ALIGN1 = |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 141 | {0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32}; |
| 142 | |
| 143 | /* Convert enum size_spec to the size of the named type. */ |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 144 | static const signed char width_bytes[] ALIGN1 = { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 145 | -1, |
| 146 | sizeof(char), |
| 147 | sizeof(short), |
| 148 | sizeof(int), |
| 149 | sizeof(long), |
| 150 | sizeof(ulonglong_t), |
| 151 | sizeof(float), |
| 152 | sizeof(double), |
| 153 | sizeof(longdouble_t) |
| 154 | }; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 155 | /* Ensure that for each member of 'enum size_spec' there is an |
| 156 | initializer in the width_bytes array. */ |
Denis Vlasenko | 45946f8 | 2007-08-20 17:27:40 +0000 | [diff] [blame] | 157 | struct ERR_width_bytes_has_bad_size { |
| 158 | char ERR_width_bytes_has_bad_size[ARRAY_SIZE(width_bytes) == N_SIZE_SPECS ? 1 : -1]; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 159 | }; |
| 160 | |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 161 | static smallint flag_dump_strings; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 162 | /* Non-zero if an old-style 'pseudo-address' was specified. */ |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 163 | static smallint flag_pseudo_start; |
| 164 | static smallint limit_bytes_to_format; |
| 165 | /* When zero and two or more consecutive blocks are equal, format |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 166 | only the first block and output an asterisk alone on the following |
| 167 | line to indicate that identical blocks have been elided. */ |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 168 | static smallint verbose; |
| 169 | static smallint ioerror; |
| 170 | |
| 171 | static size_t string_min; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 172 | |
| 173 | /* An array of specs describing how to format each input block. */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 174 | static size_t n_specs; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 175 | static struct tspec *spec; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 176 | |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 177 | /* Function that accepts an address and an optional following char, |
| 178 | and prints the address and char to stdout. */ |
| 179 | static void (*format_address)(off_t, char); |
| 180 | /* The difference between the old-style pseudo starting address and |
| 181 | the number of bytes to skip. */ |
| 182 | static off_t pseudo_offset; |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 183 | /* When zero, MAX_BYTES_TO_FORMAT and END_OFFSET are ignored, and all |
| 184 | input is formatted. */ |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 185 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 186 | /* The number of input bytes formatted per output line. It must be |
| 187 | a multiple of the least common multiple of the sizes associated with |
| 188 | the specified output types. It should be as large as possible, but |
| 189 | no larger than 16 -- unless specified with the -w option. */ |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 190 | static unsigned bytes_per_block = 32; /* have to use unsigned, not size_t */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 191 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 192 | /* A NULL-terminated list of the file-arguments from the command line. */ |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 193 | static const char *const *file_list; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 194 | |
| 195 | /* The input stream associated with the current file. */ |
| 196 | static FILE *in_stream; |
| 197 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 198 | #define MAX_INTEGRAL_TYPE_SIZE sizeof(ulonglong_t) |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 199 | static const unsigned char integral_type_size[MAX_INTEGRAL_TYPE_SIZE + 1] ALIGN1 = { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 200 | [sizeof(char)] = CHAR, |
| 201 | #if USHRT_MAX != UCHAR_MAX |
| 202 | [sizeof(short)] = SHORT, |
| 203 | #endif |
| 204 | #if UINT_MAX != USHRT_MAX |
| 205 | [sizeof(int)] = INT, |
| 206 | #endif |
| 207 | #if ULONG_MAX != UINT_MAX |
| 208 | [sizeof(long)] = LONG, |
| 209 | #endif |
| 210 | #if ULLONG_MAX != ULONG_MAX |
| 211 | [sizeof(ulonglong_t)] = LONG_LONG, |
| 212 | #endif |
| 213 | }; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 214 | |
| 215 | #define MAX_FP_TYPE_SIZE sizeof(longdouble_t) |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 216 | static const unsigned char fp_type_size[MAX_FP_TYPE_SIZE + 1] ALIGN1 = { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 217 | /* gcc seems to allow repeated indexes. Last one stays */ |
| 218 | [sizeof(longdouble_t)] = FLOAT_LONG_DOUBLE, |
| 219 | [sizeof(double)] = FLOAT_DOUBLE, |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 220 | [sizeof(float)] = FLOAT_SINGLE |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 221 | }; |
| 222 | |
| 223 | |
| 224 | static unsigned |
| 225 | gcd(unsigned u, unsigned v) |
| 226 | { |
| 227 | unsigned t; |
| 228 | while (v != 0) { |
| 229 | t = u % v; |
| 230 | u = v; |
| 231 | v = t; |
| 232 | } |
| 233 | return u; |
| 234 | } |
| 235 | |
| 236 | /* Compute the least common multiple of U and V. */ |
| 237 | static unsigned |
| 238 | lcm(unsigned u, unsigned v) { |
| 239 | unsigned t = gcd(u, v); |
| 240 | if (t == 0) |
| 241 | return 0; |
| 242 | return u * v / t; |
| 243 | } |
| 244 | |
| 245 | static void |
| 246 | print_s_char(size_t n_bytes, const char *block, const char *fmt_string) |
| 247 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 248 | while (n_bytes--) { |
| 249 | int tmp = *(signed char *) block; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 250 | printf(fmt_string, tmp); |
| 251 | block += sizeof(unsigned char); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | static void |
| 256 | print_char(size_t n_bytes, const char *block, const char *fmt_string) |
| 257 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 258 | while (n_bytes--) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 259 | unsigned tmp = *(unsigned char *) block; |
| 260 | printf(fmt_string, tmp); |
| 261 | block += sizeof(unsigned char); |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | static void |
| 266 | print_s_short(size_t n_bytes, const char *block, const char *fmt_string) |
| 267 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 268 | n_bytes /= sizeof(signed short); |
| 269 | while (n_bytes--) { |
| 270 | int tmp = *(signed short *) block; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 271 | printf(fmt_string, tmp); |
| 272 | block += sizeof(unsigned short); |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | static void |
| 277 | print_short(size_t n_bytes, const char *block, const char *fmt_string) |
| 278 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 279 | n_bytes /= sizeof(unsigned short); |
| 280 | while (n_bytes--) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 281 | unsigned tmp = *(unsigned short *) block; |
| 282 | printf(fmt_string, tmp); |
| 283 | block += sizeof(unsigned short); |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | static void |
| 288 | print_int(size_t n_bytes, const char *block, const char *fmt_string) |
| 289 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 290 | n_bytes /= sizeof(unsigned); |
| 291 | while (n_bytes--) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 292 | unsigned tmp = *(unsigned *) block; |
| 293 | printf(fmt_string, tmp); |
| 294 | block += sizeof(unsigned); |
| 295 | } |
| 296 | } |
| 297 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 298 | #if UINT_MAX == ULONG_MAX |
| 299 | # define print_long print_int |
| 300 | #else |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 301 | static void |
| 302 | print_long(size_t n_bytes, const char *block, const char *fmt_string) |
| 303 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 304 | n_bytes /= sizeof(unsigned long); |
| 305 | while (n_bytes--) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 306 | unsigned long tmp = *(unsigned long *) block; |
| 307 | printf(fmt_string, tmp); |
| 308 | block += sizeof(unsigned long); |
| 309 | } |
| 310 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 311 | #endif |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 312 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 313 | #if ULONG_MAX == ULLONG_MAX |
| 314 | # define print_long_long print_long |
| 315 | #else |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 316 | static void |
| 317 | print_long_long(size_t n_bytes, const char *block, const char *fmt_string) |
| 318 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 319 | n_bytes /= sizeof(ulonglong_t); |
| 320 | while (n_bytes--) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 321 | ulonglong_t tmp = *(ulonglong_t *) block; |
| 322 | printf(fmt_string, tmp); |
| 323 | block += sizeof(ulonglong_t); |
| 324 | } |
| 325 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 326 | #endif |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 327 | |
| 328 | static void |
| 329 | print_float(size_t n_bytes, const char *block, const char *fmt_string) |
| 330 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 331 | n_bytes /= sizeof(float); |
| 332 | while (n_bytes--) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 333 | float tmp = *(float *) block; |
| 334 | printf(fmt_string, tmp); |
| 335 | block += sizeof(float); |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | static void |
| 340 | print_double(size_t n_bytes, const char *block, const char *fmt_string) |
| 341 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 342 | n_bytes /= sizeof(double); |
| 343 | while (n_bytes--) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 344 | double tmp = *(double *) block; |
| 345 | printf(fmt_string, tmp); |
| 346 | block += sizeof(double); |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | static void |
| 351 | print_long_double(size_t n_bytes, const char *block, const char *fmt_string) |
| 352 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 353 | n_bytes /= sizeof(longdouble_t); |
| 354 | while (n_bytes--) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 355 | longdouble_t tmp = *(longdouble_t *) block; |
| 356 | printf(fmt_string, tmp); |
| 357 | block += sizeof(longdouble_t); |
| 358 | } |
| 359 | } |
| 360 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 361 | /* print_[named]_ascii are optimized for speed. |
Bernhard Reutner-Fischer | a985d30 | 2008-02-11 11:44:38 +0000 | [diff] [blame] | 362 | * Remember, someday you may want to pump gigabytes through this thing. |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 363 | * Saving a dozen of .text bytes here is counter-productive */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 364 | |
| 365 | static void |
| 366 | print_named_ascii(size_t n_bytes, const char *block, |
| 367 | const char *unused_fmt_string ATTRIBUTE_UNUSED) |
| 368 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 369 | /* Names for some non-printing characters. */ |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 370 | static const char charname[33][3] ALIGN1 = { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 371 | "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel", |
| 372 | " bs", " ht", " nl", " vt", " ff", " cr", " so", " si", |
| 373 | "dle", "dc1", "dc2", "dc3", "dc4", "nak", "syn", "etb", |
| 374 | "can", " em", "sub", "esc", " fs", " gs", " rs", " us", |
| 375 | " sp" |
| 376 | }; |
| 377 | // buf[N] pos: 01234 56789 |
| 378 | char buf[12] = " x\0 0xx\0"; |
| 379 | // actually " x\0 xxx\0", but I want to share the string with below. |
| 380 | // [12] because we take three 32bit stack slots anyway, and |
| 381 | // gcc is too dumb to initialize with constant stores, |
| 382 | // it copies initializer from rodata. Oh well. |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 383 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 384 | while (n_bytes--) { |
| 385 | unsigned masked_c = *(unsigned char *) block++; |
| 386 | |
| 387 | masked_c &= 0x7f; |
| 388 | if (masked_c == 0x7f) { |
| 389 | fputs(" del", stdout); |
| 390 | continue; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 391 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 392 | if (masked_c > ' ') { |
| 393 | buf[3] = masked_c; |
| 394 | fputs(buf, stdout); |
| 395 | continue; |
| 396 | } |
| 397 | /* Why? Because printf(" %3.3s") is much slower... */ |
| 398 | buf[6] = charname[masked_c][0]; |
| 399 | buf[7] = charname[masked_c][1]; |
| 400 | buf[8] = charname[masked_c][2]; |
| 401 | fputs(buf+5, stdout); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 402 | } |
| 403 | } |
| 404 | |
| 405 | static void |
| 406 | print_ascii(size_t n_bytes, const char *block, |
| 407 | const char *unused_fmt_string ATTRIBUTE_UNUSED) |
| 408 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 409 | // buf[N] pos: 01234 56789 |
| 410 | char buf[12] = " x\0 0xx\0"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 411 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 412 | while (n_bytes--) { |
| 413 | const char *s; |
| 414 | unsigned c = *(unsigned char *) block++; |
| 415 | |
| 416 | if (ISPRINT(c)) { |
| 417 | buf[3] = c; |
| 418 | fputs(buf, stdout); |
| 419 | continue; |
| 420 | } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 421 | switch (c) { |
| 422 | case '\0': |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 423 | s = " \\0"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 424 | break; |
| 425 | case '\007': |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 426 | s = " \\a"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 427 | break; |
| 428 | case '\b': |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 429 | s = " \\b"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 430 | break; |
| 431 | case '\f': |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 432 | s = " \\f"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 433 | break; |
| 434 | case '\n': |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 435 | s = " \\n"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 436 | break; |
| 437 | case '\r': |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 438 | s = " \\r"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 439 | break; |
| 440 | case '\t': |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 441 | s = " \\t"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 442 | break; |
| 443 | case '\v': |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 444 | s = " \\v"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 445 | break; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 446 | case '\x7f': |
| 447 | s = " 177"; |
| 448 | break; |
| 449 | default: /* c is never larger than 040 */ |
| 450 | buf[7] = (c >> 3) + '0'; |
| 451 | buf[8] = (c & 7) + '0'; |
| 452 | s = buf + 5; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 453 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 454 | fputs(s, stdout); |
| 455 | } |
| 456 | } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 457 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 458 | /* Given a list of one or more input filenames FILE_LIST, set the global |
| 459 | file pointer IN_STREAM and the global string INPUT_FILENAME to the |
| 460 | first one that can be successfully opened. Modify FILE_LIST to |
| 461 | reference the next filename in the list. A file name of "-" is |
| 462 | interpreted as standard input. If any file open fails, give an error |
| 463 | message and return nonzero. */ |
| 464 | |
| 465 | static void |
| 466 | open_next_file(void) |
| 467 | { |
Denis Vlasenko | bf0a201 | 2006-12-26 10:42:51 +0000 | [diff] [blame] | 468 | while (1) { |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 469 | if (!*file_list) |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 470 | return; |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 471 | in_stream = fopen_or_warn_stdin(*file_list++); |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 472 | if (in_stream) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 473 | break; |
| 474 | } |
| 475 | ioerror = 1; |
| 476 | } |
| 477 | |
| 478 | if (limit_bytes_to_format && !flag_dump_strings) |
| 479 | setbuf(in_stream, NULL); |
| 480 | } |
| 481 | |
| 482 | /* Test whether there have been errors on in_stream, and close it if |
| 483 | it is not standard input. Return nonzero if there has been an error |
| 484 | on in_stream or stdout; return zero otherwise. This function will |
| 485 | report more than one error only if both a read and a write error |
| 486 | have occurred. IN_ERRNO, if nonzero, is the error number |
| 487 | corresponding to the most recent action for IN_STREAM. */ |
| 488 | |
| 489 | static void |
| 490 | check_and_close(void) |
| 491 | { |
| 492 | if (in_stream) { |
| 493 | if (ferror(in_stream)) { |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 494 | bb_error_msg("%s: read error", (in_stream == stdin) |
| 495 | ? bb_msg_standard_input |
| 496 | : file_list[-1] |
| 497 | ); |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 498 | ioerror = 1; |
| 499 | } |
| 500 | fclose_if_not_stdin(in_stream); |
| 501 | in_stream = NULL; |
| 502 | } |
| 503 | |
| 504 | if (ferror(stdout)) { |
| 505 | bb_error_msg("write error"); |
| 506 | ioerror = 1; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 507 | } |
| 508 | } |
| 509 | |
| 510 | /* If S points to a single valid modern od format string, put |
| 511 | a description of that format in *TSPEC, make *NEXT point at the |
| 512 | character following the just-decoded format (if *NEXT is non-NULL), |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 513 | and return zero. For example, if S were "d4afL" |
| 514 | *NEXT would be set to "afL" and *TSPEC would be |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 515 | { |
| 516 | fmt = SIGNED_DECIMAL; |
| 517 | size = INT or LONG; (whichever integral_type_size[4] resolves to) |
| 518 | print_function = print_int; (assuming size == INT) |
Denis Vlasenko | 8e858e2 | 2007-03-07 09:35:43 +0000 | [diff] [blame] | 519 | fmt_string = "%011d%c"; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 520 | } |
| 521 | S_ORIG is solely for reporting errors. It should be the full format |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 522 | string argument. */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 523 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 524 | static void |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 525 | decode_one_format(const char *s_orig, const char *s, const char **next, |
| 526 | struct tspec *tspec) |
| 527 | { |
| 528 | enum size_spec size_spec; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 529 | unsigned size; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 530 | enum output_format fmt; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 531 | const char *p; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 532 | char *end; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 533 | char *fmt_string = NULL; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 534 | void (*print_function) (size_t, const char *, const char *); |
| 535 | unsigned c; |
| 536 | unsigned field_width = 0; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 537 | int pos; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 538 | |
| 539 | assert(tspec != NULL); |
| 540 | |
| 541 | switch (*s) { |
| 542 | case 'd': |
| 543 | case 'o': |
| 544 | case 'u': |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 545 | case 'x': { |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 546 | static const char CSIL[] ALIGN1 = "CSIL"; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 547 | |
| 548 | c = *s++; |
| 549 | p = strchr(CSIL, *s); |
| 550 | if (!p) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 551 | size = sizeof(int); |
| 552 | if (isdigit(s[0])) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 553 | size = bb_strtou(s, &end, 0); |
| 554 | if (errno == ERANGE |
| 555 | || MAX_INTEGRAL_TYPE_SIZE < size |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 556 | || integral_type_size[size] == NO_SIZE |
| 557 | ) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 558 | bb_error_msg_and_die("invalid type string '%s'; " |
| 559 | "%u-byte %s type is not supported", |
| 560 | s_orig, size, "integral"); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 561 | } |
| 562 | s = end; |
| 563 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 564 | } else { |
| 565 | static const uint8_t CSIL_sizeof[] = { |
| 566 | sizeof(char), |
| 567 | sizeof(short), |
| 568 | sizeof(int), |
| 569 | sizeof(long), |
| 570 | }; |
| 571 | size = CSIL_sizeof[p - CSIL]; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 572 | } |
| 573 | |
| 574 | #define ISPEC_TO_FORMAT(Spec, Min_format, Long_format, Max_format) \ |
| 575 | ((Spec) == LONG_LONG ? (Max_format) \ |
| 576 | : ((Spec) == LONG ? (Long_format) : (Min_format))) |
| 577 | |
| 578 | #define FMT_BYTES_ALLOCATED 9 |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 579 | size_spec = integral_type_size[size]; |
| 580 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 581 | { |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 582 | static const char doux[] ALIGN1 = "doux"; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 583 | static const char doux_fmt_letter[][4] = { |
| 584 | "lld", "llo", "llu", "llx" |
| 585 | }; |
| 586 | static const enum output_format doux_fmt[] = { |
| 587 | SIGNED_DECIMAL, |
| 588 | OCTAL, |
| 589 | UNSIGNED_DECIMAL, |
| 590 | HEXADECIMAL, |
| 591 | }; |
| 592 | static const uint8_t *const doux_bytes_to_XXX[] = { |
| 593 | bytes_to_signed_dec_digits, |
| 594 | bytes_to_oct_digits, |
| 595 | bytes_to_unsigned_dec_digits, |
| 596 | bytes_to_hex_digits, |
| 597 | }; |
| 598 | static const char doux_fmtstring[][sizeof(" %%0%u%s")] = { |
| 599 | " %%%u%s", |
| 600 | " %%0%u%s", |
| 601 | " %%%u%s", |
| 602 | " %%0%u%s", |
| 603 | }; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 604 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 605 | pos = strchr(doux, c) - doux; |
| 606 | fmt = doux_fmt[pos]; |
| 607 | field_width = doux_bytes_to_XXX[pos][size]; |
| 608 | p = doux_fmt_letter[pos] + 2; |
| 609 | if (size_spec == LONG) p--; |
| 610 | if (size_spec == LONG_LONG) p -= 2; |
| 611 | fmt_string = xasprintf(doux_fmtstring[pos], field_width, p); |
| 612 | } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 613 | |
| 614 | switch (size_spec) { |
| 615 | case CHAR: |
| 616 | print_function = (fmt == SIGNED_DECIMAL |
| 617 | ? print_s_char |
| 618 | : print_char); |
| 619 | break; |
| 620 | case SHORT: |
| 621 | print_function = (fmt == SIGNED_DECIMAL |
| 622 | ? print_s_short |
| 623 | : print_short); |
| 624 | break; |
| 625 | case INT: |
| 626 | print_function = print_int; |
| 627 | break; |
| 628 | case LONG: |
| 629 | print_function = print_long; |
| 630 | break; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 631 | default: /* case LONG_LONG: */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 632 | print_function = print_long_long; |
| 633 | break; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 634 | } |
| 635 | break; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 636 | } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 637 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 638 | case 'f': { |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 639 | static const char FDL[] ALIGN1 = "FDL"; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 640 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 641 | fmt = FLOATING_POINT; |
| 642 | ++s; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 643 | p = strchr(FDL, *s); |
| 644 | if (!p) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 645 | size = sizeof(double); |
| 646 | if (isdigit(s[0])) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 647 | size = bb_strtou(s, &end, 0); |
| 648 | if (errno == ERANGE || size > MAX_FP_TYPE_SIZE |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 649 | || fp_type_size[size] == NO_SIZE |
| 650 | ) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 651 | bb_error_msg_and_die("invalid type string '%s'; " |
| 652 | "%u-byte %s type is not supported", |
| 653 | s_orig, size, "floating point"); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 654 | } |
| 655 | s = end; |
| 656 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 657 | } else { |
| 658 | static const uint8_t FDL_sizeof[] = { |
| 659 | sizeof(float), |
| 660 | sizeof(double), |
| 661 | sizeof(longdouble_t), |
| 662 | }; |
| 663 | |
| 664 | size = FDL_sizeof[p - FDL]; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 665 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 666 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 667 | size_spec = fp_type_size[size]; |
| 668 | |
| 669 | switch (size_spec) { |
| 670 | case FLOAT_SINGLE: |
| 671 | print_function = print_float; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 672 | field_width = FLT_DIG + 8; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 673 | /* Don't use %#e; not all systems support it. */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 674 | fmt_string = xasprintf(" %%%d.%de", field_width, FLT_DIG); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 675 | break; |
| 676 | case FLOAT_DOUBLE: |
| 677 | print_function = print_double; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 678 | field_width = DBL_DIG + 8; |
| 679 | fmt_string = xasprintf(" %%%d.%de", field_width, DBL_DIG); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 680 | break; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 681 | default: /* case FLOAT_LONG_DOUBLE: */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 682 | print_function = print_long_double; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 683 | field_width = LDBL_DIG + 8; |
| 684 | fmt_string = xasprintf(" %%%d.%dLe", field_width, LDBL_DIG); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 685 | break; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 686 | } |
| 687 | break; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 688 | } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 689 | |
| 690 | case 'a': |
| 691 | ++s; |
| 692 | fmt = NAMED_CHARACTER; |
| 693 | size_spec = CHAR; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 694 | print_function = print_named_ascii; |
| 695 | field_width = 3; |
| 696 | break; |
| 697 | case 'c': |
| 698 | ++s; |
| 699 | fmt = CHARACTER; |
| 700 | size_spec = CHAR; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 701 | print_function = print_ascii; |
| 702 | field_width = 3; |
| 703 | break; |
| 704 | default: |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 705 | bb_error_msg_and_die("invalid character '%c' " |
| 706 | "in type string '%s'", *s, s_orig); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 707 | } |
| 708 | |
| 709 | tspec->size = size_spec; |
| 710 | tspec->fmt = fmt; |
| 711 | tspec->print_function = print_function; |
| 712 | tspec->fmt_string = fmt_string; |
| 713 | |
| 714 | tspec->field_width = field_width; |
| 715 | tspec->hexl_mode_trailer = (*s == 'z'); |
| 716 | if (tspec->hexl_mode_trailer) |
| 717 | s++; |
| 718 | |
| 719 | if (next != NULL) |
| 720 | *next = s; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 721 | } |
| 722 | |
| 723 | /* Decode the modern od format string S. Append the decoded |
| 724 | representation to the global array SPEC, reallocating SPEC if |
Denis Vlasenko | 97bd0e0 | 2008-02-08 15:41:01 +0000 | [diff] [blame] | 725 | necessary. */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 726 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 727 | static void |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 728 | decode_format_string(const char *s) |
| 729 | { |
| 730 | const char *s_orig = s; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 731 | |
| 732 | while (*s != '\0') { |
| 733 | struct tspec tspec; |
| 734 | const char *next; |
| 735 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 736 | decode_one_format(s_orig, s, &next, &tspec); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 737 | |
| 738 | assert(s != next); |
| 739 | s = next; |
| 740 | n_specs++; |
| 741 | spec = xrealloc(spec, n_specs * sizeof(*spec)); |
| 742 | memcpy(&spec[n_specs-1], &tspec, sizeof *spec); |
| 743 | } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 744 | } |
| 745 | |
| 746 | /* Given a list of one or more input filenames FILE_LIST, set the global |
| 747 | file pointer IN_STREAM to position N_SKIP in the concatenation of |
| 748 | those files. If any file operation fails or if there are fewer than |
| 749 | N_SKIP bytes in the combined input, give an error message and return |
| 750 | nonzero. When possible, use seek rather than read operations to |
| 751 | advance IN_STREAM. */ |
| 752 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 753 | static void |
| 754 | skip(off_t n_skip) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 755 | { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 756 | if (n_skip == 0) |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 757 | return; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 758 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 759 | while (in_stream) { /* !EOF */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 760 | struct stat file_stats; |
| 761 | |
| 762 | /* First try seeking. For large offsets, this extra work is |
| 763 | worthwhile. If the offset is below some threshold it may be |
| 764 | more efficient to move the pointer by reading. There are two |
| 765 | issues when trying to seek: |
| 766 | - the file must be seekable. |
| 767 | - before seeking to the specified position, make sure |
| 768 | that the new position is in the current file. |
| 769 | Try to do that by getting file's size using fstat. |
| 770 | But that will work only for regular files. */ |
| 771 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 772 | /* The st_size field is valid only for regular files |
| 773 | (and for symbolic links, which cannot occur here). |
| 774 | If the number of bytes left to skip is at least |
| 775 | as large as the size of the current file, we can |
| 776 | decrement n_skip and go on to the next file. */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 777 | if (fstat(fileno(in_stream), &file_stats) == 0 |
Denis Vlasenko | 97bd0e0 | 2008-02-08 15:41:01 +0000 | [diff] [blame] | 778 | && S_ISREG(file_stats.st_mode) && file_stats.st_size > 0 |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 779 | ) { |
| 780 | if (file_stats.st_size < n_skip) { |
| 781 | n_skip -= file_stats.st_size; |
Denis Vlasenko | 97bd0e0 | 2008-02-08 15:41:01 +0000 | [diff] [blame] | 782 | /* take "check & close / open_next" route */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 783 | } else { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 784 | if (fseeko(in_stream, n_skip, SEEK_CUR) != 0) |
| 785 | ioerror = 1; |
| 786 | return; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 787 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 788 | } else { |
Denis Vlasenko | 97bd0e0 | 2008-02-08 15:41:01 +0000 | [diff] [blame] | 789 | /* If it's not a regular file with positive size, |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 790 | position the file pointer by reading. */ |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 791 | char buf[1024]; |
| 792 | size_t n_bytes_to_read = 1024; |
| 793 | size_t n_bytes_read; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 794 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 795 | while (n_skip > 0) { |
| 796 | if (n_skip < n_bytes_to_read) |
| 797 | n_bytes_to_read = n_skip; |
| 798 | n_bytes_read = fread(buf, 1, n_bytes_to_read, in_stream); |
| 799 | n_skip -= n_bytes_read; |
| 800 | if (n_bytes_read != n_bytes_to_read) |
Denis Vlasenko | 8e858e2 | 2007-03-07 09:35:43 +0000 | [diff] [blame] | 801 | break; /* EOF on this file or error */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 802 | } |
| 803 | } |
| 804 | if (n_skip == 0) |
| 805 | return; |
| 806 | |
| 807 | check_and_close(); |
| 808 | open_next_file(); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 809 | } |
| 810 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 811 | if (n_skip) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 812 | bb_error_msg_and_die("cannot skip past end of combined input"); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 813 | } |
| 814 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 815 | |
| 816 | typedef void FN_format_address(off_t address, char c); |
| 817 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 818 | static void |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 819 | format_address_none(off_t address ATTRIBUTE_UNUSED, char c ATTRIBUTE_UNUSED) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 820 | { |
| 821 | } |
| 822 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 823 | static char address_fmt[] ALIGN1 = "%0n"OFF_FMT"xc"; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 824 | /* Corresponds to 'x' above */ |
| 825 | #define address_base_char address_fmt[sizeof(address_fmt)-3] |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 826 | /* Corresponds to 'n' above */ |
| 827 | #define address_pad_len_char address_fmt[2] |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 828 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 829 | static void |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 830 | format_address_std(off_t address, char c) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 831 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 832 | /* Corresponds to 'c' */ |
| 833 | address_fmt[sizeof(address_fmt)-2] = c; |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 834 | printf(address_fmt, address); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 835 | } |
| 836 | |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 837 | #if ENABLE_GETOPT_LONG |
| 838 | /* only used with --traditional */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 839 | static void |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 840 | format_address_paren(off_t address, char c) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 841 | { |
| 842 | putchar('('); |
| 843 | format_address_std(address, ')'); |
Denis Vlasenko | 0f5905e | 2006-12-17 19:21:13 +0000 | [diff] [blame] | 844 | if (c) putchar(c); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | static void |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 848 | format_address_label(off_t address, char c) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 849 | { |
| 850 | format_address_std(address, ' '); |
| 851 | format_address_paren(address + pseudo_offset, c); |
| 852 | } |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 853 | #endif |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 854 | |
| 855 | static void |
| 856 | dump_hexl_mode_trailer(size_t n_bytes, const char *block) |
| 857 | { |
| 858 | fputs(" >", stdout); |
| 859 | while (n_bytes--) { |
| 860 | unsigned c = *(unsigned char *) block++; |
| 861 | c = (ISPRINT(c) ? c : '.'); |
| 862 | putchar(c); |
| 863 | } |
| 864 | putchar('<'); |
| 865 | } |
| 866 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 867 | /* Write N_BYTES bytes from CURR_BLOCK to standard output once for each |
| 868 | of the N_SPEC format specs. CURRENT_OFFSET is the byte address of |
| 869 | CURR_BLOCK in the concatenation of input files, and it is printed |
| 870 | (optionally) only before the output line associated with the first |
| 871 | format spec. When duplicate blocks are being abbreviated, the output |
| 872 | for a sequence of identical input blocks is the output for the first |
| 873 | block followed by an asterisk alone on a line. It is valid to compare |
| 874 | the blocks PREV_BLOCK and CURR_BLOCK only when N_BYTES == BYTES_PER_BLOCK. |
| 875 | That condition may be false only for the last input block -- and then |
| 876 | only when it has not been padded to length BYTES_PER_BLOCK. */ |
| 877 | |
| 878 | static void |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 879 | write_block(off_t current_offset, size_t n_bytes, |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 880 | const char *prev_block, const char *curr_block) |
| 881 | { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 882 | static char first = 1; |
| 883 | static char prev_pair_equal = 0; |
| 884 | size_t i; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 885 | |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 886 | if (!verbose && !first |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 887 | && n_bytes == bytes_per_block |
| 888 | && memcmp(prev_block, curr_block, bytes_per_block) == 0 |
| 889 | ) { |
| 890 | if (prev_pair_equal) { |
| 891 | /* The two preceding blocks were equal, and the current |
| 892 | block is the same as the last one, so print nothing. */ |
| 893 | } else { |
| 894 | puts("*"); |
| 895 | prev_pair_equal = 1; |
| 896 | } |
| 897 | } else { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 898 | first = 0; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 899 | prev_pair_equal = 0; |
| 900 | for (i = 0; i < n_specs; i++) { |
| 901 | if (i == 0) |
| 902 | format_address(current_offset, '\0'); |
| 903 | else |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 904 | printf("%*s", address_pad_len_char - '0', ""); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 905 | (*spec[i].print_function) (n_bytes, curr_block, spec[i].fmt_string); |
| 906 | if (spec[i].hexl_mode_trailer) { |
| 907 | /* space-pad out to full line width, then dump the trailer */ |
| 908 | int datum_width = width_bytes[spec[i].size]; |
| 909 | int blank_fields = (bytes_per_block - n_bytes) / datum_width; |
| 910 | int field_width = spec[i].field_width + 1; |
| 911 | printf("%*s", blank_fields * field_width, ""); |
| 912 | dump_hexl_mode_trailer(n_bytes, curr_block); |
| 913 | } |
| 914 | putchar('\n'); |
| 915 | } |
| 916 | } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 917 | } |
| 918 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 919 | static void |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 920 | read_block(size_t n, char *block, size_t *n_bytes_in_buffer) |
| 921 | { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 922 | assert(0 < n && n <= bytes_per_block); |
| 923 | |
| 924 | *n_bytes_in_buffer = 0; |
| 925 | |
| 926 | if (n == 0) |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 927 | return; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 928 | |
| 929 | while (in_stream != NULL) { /* EOF. */ |
| 930 | size_t n_needed; |
| 931 | size_t n_read; |
| 932 | |
| 933 | n_needed = n - *n_bytes_in_buffer; |
| 934 | n_read = fread(block + *n_bytes_in_buffer, 1, n_needed, in_stream); |
| 935 | *n_bytes_in_buffer += n_read; |
| 936 | if (n_read == n_needed) |
| 937 | break; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 938 | /* error check is done in check_and_close */ |
| 939 | check_and_close(); |
| 940 | open_next_file(); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 941 | } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 942 | } |
| 943 | |
| 944 | /* Return the least common multiple of the sizes associated |
| 945 | with the format specs. */ |
| 946 | |
| 947 | static int |
| 948 | get_lcm(void) |
| 949 | { |
| 950 | size_t i; |
| 951 | int l_c_m = 1; |
| 952 | |
| 953 | for (i = 0; i < n_specs; i++) |
| 954 | l_c_m = lcm(l_c_m, width_bytes[(int) spec[i].size]); |
| 955 | return l_c_m; |
| 956 | } |
| 957 | |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 958 | #if ENABLE_GETOPT_LONG |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 959 | /* If S is a valid traditional offset specification with an optional |
| 960 | leading '+' return nonzero and set *OFFSET to the offset it denotes. */ |
| 961 | |
| 962 | static int |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 963 | parse_old_offset(const char *s, off_t *offset) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 964 | { |
| 965 | static const struct suffix_mult Bb[] = { |
| 966 | { "B", 1024 }, |
| 967 | { "b", 512 }, |
Denis Vlasenko | f868963 | 2007-07-27 15:06:25 +0000 | [diff] [blame] | 968 | { } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 969 | }; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 970 | char *p; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 971 | int radix; |
| 972 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 973 | /* Skip over any leading '+'. */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 974 | if (s[0] == '+') ++s; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 975 | |
| 976 | /* Determine the radix we'll use to interpret S. If there is a '.', |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 977 | * it's decimal, otherwise, if the string begins with '0X'or '0x', |
| 978 | * it's hexadecimal, else octal. */ |
| 979 | p = strchr(s, '.'); |
| 980 | radix = 8; |
| 981 | if (p) { |
| 982 | p[0] = '\0'; /* cheating */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 983 | radix = 10; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 984 | } else if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) |
| 985 | radix = 16; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 986 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 987 | *offset = xstrtooff_sfx(s, radix, Bb); |
| 988 | if (p) p[0] = '.'; |
| 989 | |
| 990 | return (*offset >= 0); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 991 | } |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 992 | #endif |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 993 | |
| 994 | /* Read a chunk of size BYTES_PER_BLOCK from the input files, write the |
| 995 | formatted block to standard output, and repeat until the specified |
| 996 | maximum number of bytes has been read or until all input has been |
| 997 | processed. If the last block read is smaller than BYTES_PER_BLOCK |
| 998 | and its size is not a multiple of the size associated with a format |
| 999 | spec, extend the input block with zero bytes until its length is a |
| 1000 | multiple of all format spec sizes. Write the final block. Finally, |
| 1001 | write on a line by itself the offset of the byte after the last byte |
Denis Vlasenko | 97bd0e0 | 2008-02-08 15:41:01 +0000 | [diff] [blame] | 1002 | read. */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1003 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1004 | static void |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 1005 | dump(off_t current_offset, off_t end_offset) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1006 | { |
| 1007 | char *block[2]; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1008 | int idx; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1009 | size_t n_bytes_read; |
| 1010 | |
| 1011 | block[0] = xmalloc(2*bytes_per_block); |
| 1012 | block[1] = block[0] + bytes_per_block; |
| 1013 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1014 | idx = 0; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1015 | if (limit_bytes_to_format) { |
| 1016 | while (1) { |
| 1017 | size_t n_needed; |
| 1018 | if (current_offset >= end_offset) { |
| 1019 | n_bytes_read = 0; |
| 1020 | break; |
| 1021 | } |
| 1022 | n_needed = MIN(end_offset - current_offset, |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1023 | (off_t) bytes_per_block); |
| 1024 | read_block(n_needed, block[idx], &n_bytes_read); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1025 | if (n_bytes_read < bytes_per_block) |
| 1026 | break; |
| 1027 | assert(n_bytes_read == bytes_per_block); |
| 1028 | write_block(current_offset, n_bytes_read, |
| 1029 | block[!idx], block[idx]); |
| 1030 | current_offset += n_bytes_read; |
| 1031 | idx = !idx; |
| 1032 | } |
| 1033 | } else { |
| 1034 | while (1) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1035 | read_block(bytes_per_block, block[idx], &n_bytes_read); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1036 | if (n_bytes_read < bytes_per_block) |
| 1037 | break; |
| 1038 | assert(n_bytes_read == bytes_per_block); |
| 1039 | write_block(current_offset, n_bytes_read, |
| 1040 | block[!idx], block[idx]); |
| 1041 | current_offset += n_bytes_read; |
| 1042 | idx = !idx; |
| 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | if (n_bytes_read > 0) { |
| 1047 | int l_c_m; |
| 1048 | size_t bytes_to_write; |
| 1049 | |
| 1050 | l_c_m = get_lcm(); |
| 1051 | |
| 1052 | /* Make bytes_to_write the smallest multiple of l_c_m that |
| 1053 | is at least as large as n_bytes_read. */ |
| 1054 | bytes_to_write = l_c_m * ((n_bytes_read + l_c_m - 1) / l_c_m); |
| 1055 | |
| 1056 | memset(block[idx] + n_bytes_read, 0, bytes_to_write - n_bytes_read); |
| 1057 | write_block(current_offset, bytes_to_write, |
| 1058 | block[!idx], block[idx]); |
| 1059 | current_offset += n_bytes_read; |
| 1060 | } |
| 1061 | |
| 1062 | format_address(current_offset, '\n'); |
| 1063 | |
| 1064 | if (limit_bytes_to_format && current_offset >= end_offset) |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1065 | check_and_close(); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1066 | |
| 1067 | free(block[0]); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1068 | } |
| 1069 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1070 | /* Read a single byte into *C from the concatenation of the input files |
| 1071 | named in the global array FILE_LIST. On the first call to this |
| 1072 | function, the global variable IN_STREAM is expected to be an open |
| 1073 | stream associated with the input file INPUT_FILENAME. If IN_STREAM |
| 1074 | is at end-of-file, close it and update the global variables IN_STREAM |
| 1075 | and INPUT_FILENAME so they correspond to the next file in the list. |
| 1076 | Then try to read a byte from the newly opened file. Repeat if |
| 1077 | necessary until EOF is reached for the last file in FILE_LIST, then |
Denis Vlasenko | 97bd0e0 | 2008-02-08 15:41:01 +0000 | [diff] [blame] | 1078 | set *C to EOF and return. Subsequent calls do likewise. */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1079 | |
| 1080 | static void |
| 1081 | read_char(int *c) |
| 1082 | { |
| 1083 | while (in_stream) { /* !EOF */ |
| 1084 | *c = fgetc(in_stream); |
| 1085 | if (*c != EOF) |
| 1086 | return; |
| 1087 | check_and_close(); |
| 1088 | open_next_file(); |
| 1089 | } |
| 1090 | *c = EOF; |
| 1091 | } |
| 1092 | |
| 1093 | /* Read N bytes into BLOCK from the concatenation of the input files |
| 1094 | named in the global array FILE_LIST. On the first call to this |
| 1095 | function, the global variable IN_STREAM is expected to be an open |
| 1096 | stream associated with the input file INPUT_FILENAME. If all N |
| 1097 | bytes cannot be read from IN_STREAM, close IN_STREAM and update |
| 1098 | the global variables IN_STREAM and INPUT_FILENAME. Then try to |
| 1099 | read the remaining bytes from the newly opened file. Repeat if |
| 1100 | necessary until EOF is reached for the last file in FILE_LIST. |
| 1101 | On subsequent calls, don't modify BLOCK and return zero. Set |
| 1102 | *N_BYTES_IN_BUFFER to the number of bytes read. If an error occurs, |
| 1103 | it will be detected through ferror when the stream is about to be |
| 1104 | closed. If there is an error, give a message but continue reading |
| 1105 | as usual and return nonzero. Otherwise return zero. */ |
| 1106 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1107 | /* STRINGS mode. Find each "string constant" in the input. |
| 1108 | A string constant is a run of at least 'string_min' ASCII |
| 1109 | graphic (or formatting) characters terminated by a null. |
| 1110 | Based on a function written by Richard Stallman for a |
Denis Vlasenko | 97bd0e0 | 2008-02-08 15:41:01 +0000 | [diff] [blame] | 1111 | traditional version of od. */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1112 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1113 | static void |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 1114 | dump_strings(off_t address, off_t end_offset) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1115 | { |
| 1116 | size_t bufsize = MAX(100, string_min); |
| 1117 | char *buf = xmalloc(bufsize); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1118 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1119 | while (1) { |
| 1120 | size_t i; |
| 1121 | int c; |
| 1122 | |
| 1123 | /* See if the next 'string_min' chars are all printing chars. */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1124 | tryline: |
| 1125 | if (limit_bytes_to_format && (end_offset - string_min <= address)) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1126 | break; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1127 | i = 0; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1128 | while (!limit_bytes_to_format || address < end_offset) { |
| 1129 | if (i == bufsize) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1130 | bufsize += bufsize/8; |
| 1131 | buf = xrealloc(buf, bufsize); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1132 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1133 | read_char(&c); |
| 1134 | if (c < 0) { /* EOF */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1135 | free(buf); |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1136 | return; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1137 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1138 | address++; |
| 1139 | if (!c) |
| 1140 | break; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1141 | if (!ISPRINT(c)) |
| 1142 | goto tryline; /* It isn't; give up on this string. */ |
| 1143 | buf[i++] = c; /* String continues; store it all. */ |
| 1144 | } |
| 1145 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1146 | if (i < string_min) /* Too short! */ |
| 1147 | goto tryline; |
| 1148 | |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 1149 | /* If we get here, the string is all printable and NUL-terminated, |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1150 | * so print it. It is all in 'buf' and 'i' is its length. */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1151 | buf[i] = 0; |
| 1152 | format_address(address - i - 1, ' '); |
| 1153 | |
| 1154 | for (i = 0; (c = buf[i]); i++) { |
| 1155 | switch (c) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1156 | case '\007': fputs("\\a", stdout); break; |
| 1157 | case '\b': fputs("\\b", stdout); break; |
| 1158 | case '\f': fputs("\\f", stdout); break; |
| 1159 | case '\n': fputs("\\n", stdout); break; |
| 1160 | case '\r': fputs("\\r", stdout); break; |
| 1161 | case '\t': fputs("\\t", stdout); break; |
| 1162 | case '\v': fputs("\\v", stdout); break; |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 1163 | default: putchar(c); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1164 | } |
| 1165 | } |
| 1166 | putchar('\n'); |
| 1167 | } |
| 1168 | |
| 1169 | /* We reach this point only if we search through |
| 1170 | (max_bytes_to_format - string_min) bytes before reaching EOF. */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1171 | free(buf); |
| 1172 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1173 | check_and_close(); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1174 | } |
| 1175 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 1176 | int od_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 06af216 | 2007-02-03 17:28:39 +0000 | [diff] [blame] | 1177 | int od_main(int argc, char **argv) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1178 | { |
| 1179 | static const struct suffix_mult bkm[] = { |
| 1180 | { "b", 512 }, |
| 1181 | { "k", 1024 }, |
| 1182 | { "m", 1024*1024 }, |
Denis Vlasenko | f868963 | 2007-07-27 15:06:25 +0000 | [diff] [blame] | 1183 | { } |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1184 | }; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1185 | enum { |
| 1186 | OPT_A = 1 << 0, |
| 1187 | OPT_N = 1 << 1, |
| 1188 | OPT_a = 1 << 2, |
| 1189 | OPT_b = 1 << 3, |
| 1190 | OPT_c = 1 << 4, |
| 1191 | OPT_d = 1 << 5, |
| 1192 | OPT_f = 1 << 6, |
| 1193 | OPT_h = 1 << 7, |
| 1194 | OPT_i = 1 << 8, |
| 1195 | OPT_j = 1 << 9, |
| 1196 | OPT_l = 1 << 10, |
| 1197 | OPT_o = 1 << 11, |
| 1198 | OPT_t = 1 << 12, |
| 1199 | OPT_v = 1 << 13, |
| 1200 | OPT_x = 1 << 14, |
| 1201 | OPT_s = 1 << 15, |
| 1202 | OPT_S = 1 << 16, |
| 1203 | OPT_w = 1 << 17, |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 1204 | OPT_traditional = (1 << 18) * ENABLE_GETOPT_LONG, |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1205 | }; |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 1206 | #if ENABLE_GETOPT_LONG |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 1207 | static const char od_longopts[] ALIGN1 = |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 1208 | "skip-bytes\0" Required_argument "j" |
| 1209 | "address-radix\0" Required_argument "A" |
| 1210 | "read-bytes\0" Required_argument "N" |
| 1211 | "format\0" Required_argument "t" |
| 1212 | "output-duplicates\0" No_argument "v" |
| 1213 | "strings\0" Optional_argument "S" |
| 1214 | "width\0" Optional_argument "w" |
| 1215 | "traditional\0" No_argument "\xff" |
Denis Vlasenko | 990d0f6 | 2007-07-24 15:54:42 +0000 | [diff] [blame] | 1216 | ; |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 1217 | #endif |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1218 | char *str_A, *str_N, *str_j, *str_S; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1219 | llist_t *lst_t = NULL; |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 1220 | unsigned opt; |
| 1221 | int l_c_m; |
| 1222 | /* The old-style 'pseudo starting address' to be printed in parentheses |
| 1223 | after any true address. */ |
| 1224 | off_t pseudo_start = pseudo_start; // for gcc |
| 1225 | /* The number of input bytes to skip before formatting and writing. */ |
| 1226 | off_t n_bytes_to_skip = 0; |
| 1227 | /* The offset of the first byte after the last byte to be formatted. */ |
| 1228 | off_t end_offset = 0; |
| 1229 | /* The maximum number of bytes that will be formatted. */ |
| 1230 | off_t max_bytes_to_format = 0; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1231 | |
| 1232 | spec = NULL; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1233 | format_address = format_address_std; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1234 | address_base_char = 'o'; |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 1235 | address_pad_len_char = '7'; |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 1236 | /* flag_dump_strings = 0; - already is */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1237 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1238 | /* Parse command line */ |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 1239 | opt_complementary = "w+:t::"; /* -w N, -t is a list */ |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 1240 | #if ENABLE_GETOPT_LONG |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 1241 | applet_long_options = od_longopts; |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 1242 | #endif |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 1243 | opt = getopt32(argv, "A:N:abcdfhij:lot:vxsS:" |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1244 | "w::", // -w with optional param |
| 1245 | // -S was -s and also had optional parameter |
| 1246 | // but in coreutils 6.3 it was renamed and now has |
| 1247 | // _mandatory_ parameter |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 1248 | &str_A, &str_N, &str_j, &lst_t, &str_S, &bytes_per_block); |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1249 | argc -= optind; |
| 1250 | argv += optind; |
| 1251 | if (opt & OPT_A) { |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 1252 | static const char doxn[] ALIGN1 = "doxn"; |
| 1253 | static const char doxn_address_base_char[] ALIGN1 = { |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 1254 | 'u', 'o', 'x', /* '?' fourth one is not important */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1255 | }; |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 1256 | static const uint8_t doxn_address_pad_len_char[] ALIGN1 = { |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 1257 | '7', '7', '6', /* '?' */ |
| 1258 | }; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1259 | char *p; |
| 1260 | int pos; |
| 1261 | p = strchr(doxn, str_A[0]); |
| 1262 | if (!p) |
| 1263 | bb_error_msg_and_die("bad output address radix " |
| 1264 | "'%c' (must be [doxn])", str_A[0]); |
| 1265 | pos = p - doxn; |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 1266 | if (pos == 3) format_address = format_address_none; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1267 | address_base_char = doxn_address_base_char[pos]; |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 1268 | address_pad_len_char = doxn_address_pad_len_char[pos]; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1269 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1270 | if (opt & OPT_N) { |
| 1271 | limit_bytes_to_format = 1; |
| 1272 | max_bytes_to_format = xstrtooff_sfx(str_N, 0, bkm); |
| 1273 | } |
| 1274 | if (opt & OPT_a) decode_format_string("a"); |
| 1275 | if (opt & OPT_b) decode_format_string("oC"); |
| 1276 | if (opt & OPT_c) decode_format_string("c"); |
| 1277 | if (opt & OPT_d) decode_format_string("u2"); |
| 1278 | if (opt & OPT_f) decode_format_string("fF"); |
| 1279 | if (opt & OPT_h) decode_format_string("x2"); |
| 1280 | if (opt & OPT_i) decode_format_string("d2"); |
| 1281 | if (opt & OPT_j) n_bytes_to_skip = xstrtooff_sfx(str_j, 0, bkm); |
| 1282 | if (opt & OPT_l) decode_format_string("d4"); |
| 1283 | if (opt & OPT_o) decode_format_string("o2"); |
| 1284 | //if (opt & OPT_t)... |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1285 | while (lst_t) { |
| 1286 | decode_format_string(lst_t->data); |
| 1287 | lst_t = lst_t->link; |
| 1288 | } |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 1289 | if (opt & OPT_v) verbose = 1; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1290 | if (opt & OPT_x) decode_format_string("x2"); |
| 1291 | if (opt & OPT_s) decode_format_string("d2"); |
| 1292 | if (opt & OPT_S) { |
| 1293 | string_min = 3; |
| 1294 | string_min = xstrtou_sfx(str_S, 0, bkm); |
| 1295 | flag_dump_strings = 1; |
| 1296 | } |
| 1297 | //if (opt & OPT_w)... |
| 1298 | //if (opt & OPT_traditional)... |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1299 | |
| 1300 | if (flag_dump_strings && n_specs > 0) |
| 1301 | bb_error_msg_and_die("no type may be specified when dumping strings"); |
| 1302 | |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1303 | /* If the --traditional option is used, there may be from |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1304 | * 0 to 3 remaining command line arguments; handle each case |
| 1305 | * separately. |
Denis Vlasenko | 8e858e2 | 2007-03-07 09:35:43 +0000 | [diff] [blame] | 1306 | * od [file] [[+]offset[.][b] [[+]label[.][b]]] |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1307 | * The offset and pseudo_start have the same syntax. |
| 1308 | * |
| 1309 | * FIXME: POSIX 1003.1-2001 with XSI requires support for the |
| 1310 | * traditional syntax even if --traditional is not given. */ |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1311 | |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 1312 | #if ENABLE_GETOPT_LONG |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1313 | if (opt & OPT_traditional) { |
| 1314 | off_t o1, o2; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1315 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1316 | if (argc == 1) { |
| 1317 | if (parse_old_offset(argv[0], &o1)) { |
| 1318 | n_bytes_to_skip = o1; |
| 1319 | --argc; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1320 | ++argv; |
| 1321 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1322 | } else if (argc == 2) { |
| 1323 | if (parse_old_offset(argv[0], &o1) |
| 1324 | && parse_old_offset(argv[1], &o2) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1325 | ) { |
| 1326 | n_bytes_to_skip = o1; |
| 1327 | flag_pseudo_start = 1; |
| 1328 | pseudo_start = o2; |
| 1329 | argv += 2; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1330 | argc -= 2; |
| 1331 | } else if (parse_old_offset(argv[1], &o2)) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1332 | n_bytes_to_skip = o2; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1333 | --argc; |
| 1334 | argv[1] = argv[0]; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1335 | ++argv; |
| 1336 | } else { |
| 1337 | bb_error_msg_and_die("invalid second operand " |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1338 | "in compatibility mode '%s'", argv[1]); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1339 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1340 | } else if (argc == 3) { |
| 1341 | if (parse_old_offset(argv[1], &o1) |
| 1342 | && parse_old_offset(argv[2], &o2) |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1343 | ) { |
| 1344 | n_bytes_to_skip = o1; |
| 1345 | flag_pseudo_start = 1; |
| 1346 | pseudo_start = o2; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1347 | argv[2] = argv[0]; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1348 | argv += 2; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1349 | argc -= 2; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1350 | } else { |
| 1351 | bb_error_msg_and_die("in compatibility mode " |
| 1352 | "the last two arguments must be offsets"); |
| 1353 | } |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1354 | } else if (argc > 3) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1355 | bb_error_msg_and_die("compatibility mode supports " |
| 1356 | "at most three arguments"); |
| 1357 | } |
| 1358 | |
| 1359 | if (flag_pseudo_start) { |
| 1360 | if (format_address == format_address_none) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1361 | address_base_char = 'o'; |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 1362 | address_pad_len_char = '7'; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1363 | format_address = format_address_paren; |
Denis Vlasenko | 2425bdc | 2006-11-29 14:32:01 +0000 | [diff] [blame] | 1364 | } else |
| 1365 | format_address = format_address_label; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1366 | } |
| 1367 | } |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 1368 | #endif |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1369 | |
| 1370 | if (limit_bytes_to_format) { |
| 1371 | end_offset = n_bytes_to_skip + max_bytes_to_format; |
| 1372 | if (end_offset < n_bytes_to_skip) |
| 1373 | bb_error_msg_and_die("skip-bytes + read-bytes is too large"); |
| 1374 | } |
| 1375 | |
| 1376 | if (n_specs == 0) { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1377 | decode_format_string("o2"); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1378 | n_specs = 1; |
| 1379 | } |
| 1380 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1381 | /* If no files were listed on the command line, |
| 1382 | set the global pointer FILE_LIST so that it |
| 1383 | references the null-terminated list of one name: "-". */ |
Denis Vlasenko | d0a071a | 2008-03-17 09:33:45 +0000 | [diff] [blame] | 1384 | file_list = bb_argv_dash; |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1385 | if (argc > 0) { |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1386 | /* Set the global pointer FILE_LIST so that it |
| 1387 | references the first file-argument on the command-line. */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1388 | file_list = (char const *const *) argv; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1389 | } |
| 1390 | |
| 1391 | /* open the first input file */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1392 | open_next_file(); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1393 | /* skip over any unwanted header bytes */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1394 | skip(n_bytes_to_skip); |
| 1395 | if (!in_stream) |
Bernhard Reutner-Fischer | 7c2db5c | 2007-11-16 12:39:16 +0000 | [diff] [blame] | 1396 | return EXIT_FAILURE; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1397 | |
| 1398 | pseudo_offset = (flag_pseudo_start ? pseudo_start - n_bytes_to_skip : 0); |
| 1399 | |
| 1400 | /* Compute output block length. */ |
| 1401 | l_c_m = get_lcm(); |
| 1402 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1403 | if (opt & OPT_w) { /* -w: width */ |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1404 | if (!bytes_per_block || bytes_per_block % l_c_m != 0) { |
Denis Vlasenko | 97bd0e0 | 2008-02-08 15:41:01 +0000 | [diff] [blame] | 1405 | bb_error_msg("warning: invalid width %u; using %d instead", |
| 1406 | (unsigned)bytes_per_block, l_c_m); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1407 | bytes_per_block = l_c_m; |
| 1408 | } |
| 1409 | } else { |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1410 | bytes_per_block = l_c_m; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1411 | if (l_c_m < DEFAULT_BYTES_PER_BLOCK) |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1412 | bytes_per_block *= DEFAULT_BYTES_PER_BLOCK / l_c_m; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1413 | } |
| 1414 | |
| 1415 | #ifdef DEBUG |
| 1416 | for (i = 0; i < n_specs; i++) { |
| 1417 | printf("%d: fmt=\"%s\" width=%d\n", |
| 1418 | i, spec[i].fmt_string, width_bytes[spec[i].size]); |
| 1419 | } |
| 1420 | #endif |
| 1421 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1422 | if (flag_dump_strings) |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 1423 | dump_strings(n_bytes_to_skip, end_offset); |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1424 | else |
Denis Vlasenko | e4bc603 | 2007-12-24 12:14:24 +0000 | [diff] [blame] | 1425 | dump(n_bytes_to_skip, end_offset); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1426 | |
Denis Vlasenko | 601ae13 | 2006-11-28 23:37:46 +0000 | [diff] [blame] | 1427 | if (fclose(stdin) == EOF) |
| 1428 | bb_perror_msg_and_die(bb_msg_standard_input); |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1429 | |
Denis Vlasenko | bcb66ec | 2007-07-24 12:28:03 +0000 | [diff] [blame] | 1430 | return ioerror; |
Denis Vlasenko | 1114de7 | 2006-10-10 23:26:05 +0000 | [diff] [blame] | 1431 | } |