| @@ -0,0 +1,1594 @@ |
| + | /* od -- dump files in octal and other formats |
| + | Copyright (C) 92, 1995-2004 Free Software Foundation, Inc. |
| + | |
| + | This program is free software; you can redistribute it and/or modify |
| + | it under the terms of the GNU General Public License as published by |
| + | the Free Software Foundation; either version 2, or (at your option) |
| + | any later version. |
| + | |
| + | This program is distributed in the hope that it will be useful, |
| + | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| + | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| + | GNU General Public License for more details. |
| + | |
| + | You should have received a copy of the GNU General Public License |
| + | along with this program; if not, write to the Free Software Foundation, |
| + | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| + | |
| + | /* Written by Jim Meyering. */ |
| + | |
| + | /* Busyboxed by Denis Vlasenko |
| + | ** Based on od.c from coreutils-5.2.1 |
| + | ** Top bloat sources: |
| + | ** get_lcm 111 |
| + | ** print_ascii 145 |
| + | ** format_address_std 159 |
| + | ** check_and_close 160 |
| + | ** open_next_file 170 |
| + | ** write_block 368 |
| + | ** decode_format_string 1169 |
| + | ** od_main 2623 |
| + | ** TODO: get rid of getopt() |
| + | */ |
| + | |
| + | #include "busybox.h" |
| + | #include <getopt.h> |
| + | |
| + | #define assert(a) ((void)0) |
| + | #define ISPRINT(c) ((c)>=' ') |
| + | |
| + | typedef long double longdouble_t; |
| + | typedef unsigned long long ulonglong_t; |
| + | #define xstrtoumax_sfx xstrtoul_sfx |
| + | #define xstrtoumax_range_sfx xstrtoul_range_sfx |
| + | |
| + | /* The default number of input bytes per output line. */ |
| + | #define DEFAULT_BYTES_PER_BLOCK 16 |
| + | |
| + | /* The number of decimal digits of precision in a float. */ |
| + | #ifndef FLT_DIG |
| + | # define FLT_DIG 7 |
| + | #endif |
| + | |
| + | /* The number of decimal digits of precision in a double. */ |
| + | #ifndef DBL_DIG |
| + | # define DBL_DIG 15 |
| + | #endif |
| + | |
| + | /* The number of decimal digits of precision in a long double. */ |
| + | #ifndef LDBL_DIG |
| + | # define LDBL_DIG DBL_DIG |
| + | #endif |
| + | |
| + | enum size_spec { |
| + | NO_SIZE, |
| + | CHAR, |
| + | SHORT, |
| + | INT, |
| + | LONG, |
| + | LONG_LONG, |
| + | /* FIXME: add INTMAX support, too */ |
| + | FLOAT_SINGLE, |
| + | FLOAT_DOUBLE, |
| + | FLOAT_LONG_DOUBLE, |
| + | N_SIZE_SPECS |
| + | }; |
| + | |
| + | enum output_format { |
| + | SIGNED_DECIMAL, |
| + | UNSIGNED_DECIMAL, |
| + | OCTAL, |
| + | HEXADECIMAL, |
| + | FLOATING_POINT, |
| + | NAMED_CHARACTER, |
| + | CHARACTER |
| + | }; |
| + | |
| + | /* Each output format specification (from '-t spec' or from |
| + | old-style options) is represented by one of these structures. */ |
| + | struct tspec { |
| + | enum output_format fmt; |
| + | enum size_spec size; |
| + | void (*print_function) (size_t, const char *, const char *); |
| + | char *fmt_string; |
| + | int hexl_mode_trailer; |
| + | int field_width; |
| + | }; |
| + | |
| + | /* Convert the number of 8-bit bytes of a binary representation to |
| + | the number of characters (digits + sign if the type is signed) |
| + | required to represent the same quantity in the specified base/type. |
| + | For example, a 32-bit (4-byte) quantity may require a field width |
| + | as wide as the following for these types: |
| + | 11 unsigned octal |
| + | 11 signed decimal |
| + | 10 unsigned decimal |
| + | 8 unsigned hexadecimal */ |
| + | |
| + | static const unsigned char bytes_to_oct_digits[] = |
| + | {0, 3, 6, 8, 11, 14, 16, 19, 22, 25, 27, 30, 32, 35, 38, 41, 43}; |
| + | |
| + | static const unsigned char bytes_to_signed_dec_digits[] = |
| + | {1, 4, 6, 8, 11, 13, 16, 18, 20, 23, 25, 28, 30, 33, 35, 37, 40}; |
| + | |
| + | static const unsigned char bytes_to_unsigned_dec_digits[] = |
| + | {0, 3, 5, 8, 10, 13, 15, 17, 20, 22, 25, 27, 29, 32, 34, 37, 39}; |
| + | |
| + | static const unsigned char bytes_to_hex_digits[] = |
| + | {0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32}; |
| + | |
| + | /* Convert enum size_spec to the size of the named type. */ |
| + | static const signed char width_bytes[] = { |
| + | -1, |
| + | sizeof(char), |
| + | sizeof(short), |
| + | sizeof(int), |
| + | sizeof(long), |
| + | sizeof(ulonglong_t), |
| + | sizeof(float), |
| + | sizeof(double), |
| + | sizeof(longdouble_t) |
| + | }; |
| + | |
| + | /* Ensure that for each member of 'enum size_spec' there is an |
| + | initializer in the width_bytes array. */ |
| + | struct dummy { |
| + | int assert_width_bytes_matches_size_spec_decl |
| + | [sizeof width_bytes / sizeof width_bytes[0] == N_SIZE_SPECS ? 1 : -1]; |
| + | }; |
| + | |
| + | /* Names for some non-printing characters. */ |
| + | static const char charname[33][4] = { |
| + | "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel", |
| + | "bs", "ht", "nl", "vt", "ff", "cr", "so", "si", |
| + | "dle", "dc1", "dc2", "dc3", "dc4", "nak", "syn", "etb", |
| + | "can", "em", "sub", "esc", "fs", "gs", "rs", "us", |
| + | "sp" |
| + | }; |
| + | |
| + | /* Address base (8, 10 or 16). */ |
| + | static int address_base; |
| + | |
| + | /* The number of octal digits required to represent the largest |
| + | address value. */ |
| + | #define MAX_ADDRESS_LENGTH \ |
| + | ((sizeof(uintmax_t) * CHAR_BIT + CHAR_BIT - 1) / 3) |
| + | |
| + | /* Width of a normal address. */ |
| + | static int address_pad_len; |
| + | |
| + | static size_t string_min; |
| + | static int flag_dump_strings; |
| + | |
| + | /* Non-zero if we should recognize the older non-option arguments |
| + | that specified at most one file and optional arguments specifying |
| + | offset and pseudo-start address. */ |
| + | static int traditional; |
| + | |
| + | /* Non-zero if an old-style 'pseudo-address' was specified. */ |
| + | static int flag_pseudo_start; |
| + | |
| + | /* The difference between the old-style pseudo starting address and |
| + | the number of bytes to skip. */ |
| + | static uintmax_t pseudo_offset; |
| + | |
| + | /* Function that accepts an address and an optional following char, |
| + | and prints the address and char to stdout. */ |
| + | static void (*format_address) (uintmax_t, char); |
| + | |
| + | /* The number of input bytes to skip before formatting and writing. */ |
| + | static uintmax_t n_bytes_to_skip; // = 0; |
| + | |
| + | /* When zero, MAX_BYTES_TO_FORMAT and END_OFFSET are ignored, and all |
| + | input is formatted. */ |
| + | static int limit_bytes_to_format; // = 0; |
| + | |
| + | /* The maximum number of bytes that will be formatted. */ |
| + | static uintmax_t max_bytes_to_format; |
| + | |
| + | /* The offset of the first byte after the last byte to be formatted. */ |
| + | static uintmax_t end_offset; |
| + | |
| + | /* When nonzero and two or more consecutive blocks are equal, format |
| + | only the first block and output an asterisk alone on the following |
| + | line to indicate that identical blocks have been elided. */ |
| + | static int abbreviate_duplicate_blocks = 1; |
| + | |
| + | /* An array of specs describing how to format each input block. */ |
| + | static struct tspec *spec; |
| + | |
| + | /* The number of format specs. */ |
| + | static size_t n_specs; |
| + | |
| + | /* The number of input bytes formatted per output line. It must be |
| + | a multiple of the least common multiple of the sizes associated with |
| + | the specified output types. It should be as large as possible, but |
| + | no larger than 16 -- unless specified with the -w option. */ |
| + | static size_t bytes_per_block; |
| + | |
| + | /* Human-readable representation of *file_list (for error messages). |
| + | It differs from *file_list only when *file_list is "-". */ |
| + | static char const *input_filename; |
| + | |
| + | /* A NULL-terminated list of the file-arguments from the command line. */ |
| + | static char const *const *file_list; |
| + | |
| + | /* Initializer for file_list if no file-arguments |
| + | were specified on the command line. */ |
| + | static char const *const default_file_list[] = {"-", NULL}; |
| + | |
| + | /* The input stream associated with the current file. */ |
| + | static FILE *in_stream; |
| + | |
| + | /* If nonzero, at least one of the files we read was standard input. */ |
| + | static int have_read_stdin; |
| + | |
| + | #define MAX_INTEGRAL_TYPE_SIZE sizeof(ulonglong_t) |
| + | static unsigned char integral_type_size[MAX_INTEGRAL_TYPE_SIZE + 1]; |
| + | |
| + | #define MAX_FP_TYPE_SIZE sizeof(longdouble_t) |
| + | static unsigned char fp_type_size[MAX_FP_TYPE_SIZE + 1]; |
| + | |
| + | |
| + | /* For long options that have no equivalent short option, use a |
| + | non-character as a pseudo short option, starting with CHAR_MAX + 1. */ |
| + | enum { |
| + | TRADITIONAL_OPTION = CHAR_MAX + 1 |
| + | }; |
| + | |
| + | |
| + | static unsigned |
| + | gcd(unsigned u, unsigned v) |
| + | { |
| + | unsigned t; |
| + | while (v != 0) { |
| + | t = u % v; |
| + | u = v; |
| + | v = t; |
| + | } |
| + | return u; |
| + | } |
| + | |
| + | /* Compute the least common multiple of U and V. */ |
| + | static unsigned |
| + | lcm(unsigned u, unsigned v) { |
| + | unsigned t = gcd(u, v); |
| + | if (t == 0) |
| + | return 0; |
| + | return u * v / t; |
| + | } |
| + | |
| + | static void |
| + | print_s_char(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes; i > 0; i--) { |
| + | int tmp = (unsigned) *(unsigned char *) block; |
| + | if (tmp > SCHAR_MAX) |
| + | tmp -= SCHAR_MAX - SCHAR_MIN + 1; |
| + | assert(tmp <= SCHAR_MAX); |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(unsigned char); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_char(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes; i > 0; i--) { |
| + | unsigned tmp = *(unsigned char *) block; |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(unsigned char); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_s_short(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes / sizeof(unsigned short); i > 0; i--) { |
| + | int tmp = (unsigned) *(unsigned short *) block; |
| + | if (tmp > SHRT_MAX) |
| + | tmp -= SHRT_MAX - SHRT_MIN + 1; |
| + | assert(tmp <= SHRT_MAX); |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(unsigned short); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_short(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes / sizeof(unsigned short); i > 0; i--) { |
| + | unsigned tmp = *(unsigned short *) block; |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(unsigned short); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_int(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes / sizeof(unsigned); i > 0; i--) { |
| + | unsigned tmp = *(unsigned *) block; |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(unsigned); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_long(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes / sizeof(unsigned long); i > 0; i--) { |
| + | unsigned long tmp = *(unsigned long *) block; |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(unsigned long); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_long_long(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes / sizeof(ulonglong_t); i > 0; i--) { |
| + | ulonglong_t tmp = *(ulonglong_t *) block; |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(ulonglong_t); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_float(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes / sizeof(float); i > 0; i--) { |
| + | float tmp = *(float *) block; |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(float); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_double(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes / sizeof(double); i > 0; i--) { |
| + | double tmp = *(double *) block; |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(double); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_long_double(size_t n_bytes, const char *block, const char *fmt_string) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes / sizeof(longdouble_t); i > 0; i--) { |
| + | longdouble_t tmp = *(longdouble_t *) block; |
| + | printf(fmt_string, tmp); |
| + | block += sizeof(longdouble_t); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | dump_hexl_mode_trailer(size_t n_bytes, const char *block) |
| + | { |
| + | size_t i; |
| + | fputs(" >", stdout); |
| + | for (i = n_bytes; i > 0; i--) { |
| + | unsigned c = *(unsigned char *) block; |
| + | unsigned c2 = (ISPRINT(c) ? c : '.'); |
| + | putchar(c2); |
| + | block += sizeof(unsigned char); |
| + | } |
| + | putchar('<'); |
| + | } |
| + | |
| + | static void |
| + | print_named_ascii(size_t n_bytes, const char *block, |
| + | const char *unused_fmt_string ATTRIBUTE_UNUSED) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes; i > 0; i--) { |
| + | unsigned c = *(unsigned char *) block; |
| + | unsigned masked_c = (0x7f & c); |
| + | const char *s; |
| + | char buf[5]; |
| + | |
| + | if (masked_c == 127) |
| + | s = "del"; |
| + | else if (masked_c <= 040) |
| + | s = charname[masked_c]; |
| + | else { |
| + | sprintf(buf, " %c", masked_c); |
| + | s = buf; |
| + | } |
| + | |
| + | printf(" %3s", s); |
| + | block += sizeof(unsigned char); |
| + | } |
| + | } |
| + | |
| + | static void |
| + | print_ascii(size_t n_bytes, const char *block, |
| + | const char *unused_fmt_string ATTRIBUTE_UNUSED) |
| + | { |
| + | size_t i; |
| + | for (i = n_bytes; i > 0; i--) { |
| + | unsigned c = *(unsigned char *) block; |
| + | const char *s; |
| + | char buf[5]; |
| + | |
| + | switch (c) { |
| + | case '\0': |
| + | s = " \\0"; |
| + | break; |
| + | case '\007': |
| + | s = " \\a"; |
| + | break; |
| + | case '\b': |
| + | s = " \\b"; |
| + | break; |
| + | case '\f': |
| + | s = " \\f"; |
| + | break; |
| + | case '\n': |
| + | s = " \\n"; |
| + | break; |
| + | case '\r': |
| + | s = " \\r"; |
| + | break; |
| + | case '\t': |
| + | s = " \\t"; |
| + | break; |
| + | case '\v': |
| + | s = " \\v"; |
| + | break; |
| + | default: |
| + | sprintf(buf, (ISPRINT(c) ? " %c" : "%03o"), c); |
| + | s = (const char *) buf; |
| + | } |
| + | |
| + | printf(" %3s", s); |
| + | block += sizeof(unsigned char); |
| + | } |
| + | } |
| + | |
| + | /* If S points to a single valid modern od format string, put |
| + | a description of that format in *TSPEC, make *NEXT point at the |
| + | character following the just-decoded format (if *NEXT is non-NULL), |
| + | and return zero. If S is not valid, don't modify *NEXT or *TSPEC, |
| + | give a diagnostic, and return nonzero. For example, if S were |
| + | "d4afL" *NEXT would be set to "afL" and *TSPEC would be |
| + | { |
| + | fmt = SIGNED_DECIMAL; |
| + | size = INT or LONG; (whichever integral_type_size[4] resolves to) |
| + | print_function = print_int; (assuming size == INT) |
| + | fmt_string = "%011d%c"; |
| + | } |
| + | S_ORIG is solely for reporting errors. It should be the full format |
| + | string argument. |
| + | */ |
| + | |
| + | static int |
| + | decode_one_format(const char *s_orig, const char *s, const char **next, |
| + | struct tspec *tspec) |
| + | { |
| + | enum size_spec size_spec; |
| + | unsigned long size; |
| + | enum output_format fmt; |
| + | const char *pre_fmt_string; |
| + | char *end; |
| + | char *fmt_string; |
| + | void (*print_function) (size_t, const char *, const char *); |
| + | unsigned c; |
| + | unsigned field_width = 0; |
| + | |
| + | assert(tspec != NULL); |
| + | |
| + | switch (*s) { |
| + | case 'd': |
| + | case 'o': |
| + | case 'u': |
| + | case 'x': |
| + | c = *s; |
| + | ++s; |
| + | switch (*s) { |
| + | case 'C': |
| + | ++s; |
| + | size = sizeof(char); |
| + | break; |
| + | case 'S': |
| + | ++s; |
| + | size = sizeof(short); |
| + | break; |
| + | case 'I': |
| + | ++s; |
| + | size = sizeof(int); |
| + | break; |
| + | case 'L': |
| + | ++s; |
| + | size = sizeof(long); |
| + | break; |
| + | default: |
| + | size = sizeof(int); |
| + | if (isdigit(s[0])) { |
| + | size = strtoul(s, &end, 0); |
| + | if (end[0] || MAX_INTEGRAL_TYPE_SIZE < size |
| + | || integral_type_size[size] == NO_SIZE |
| + | ) { |
| + | bb_error_msg("invalid type string '%s'; " |
| + | "%lu-byte integral type is not spported", s_orig, size); |
| + | return 1; |
| + | } |
| + | s = end; |
| + | } |
| + | break; |
| + | } |
| + | |
| + | #define ISPEC_TO_FORMAT(Spec, Min_format, Long_format, Max_format) \ |
| + | ((Spec) == LONG_LONG ? (Max_format) \ |
| + | : ((Spec) == LONG ? (Long_format) : (Min_format))) |
| + | |
| + | #define FMT_BYTES_ALLOCATED 9 |
| + | fmt_string = xmalloc(FMT_BYTES_ALLOCATED); |
| + | |
| + | size_spec = integral_type_size[size]; |
| + | |
| + | switch (c) { |
| + | case 'd': |
| + | fmt = SIGNED_DECIMAL; |
| + | sprintf(fmt_string, " %%%u%s", |
| + | (field_width = bytes_to_signed_dec_digits[size]), |
| + | ISPEC_TO_FORMAT(size_spec, "d", "ld", PRIdMAX)); |
| + | break; |
| + | case 'o': |
| + | fmt = OCTAL; |
| + | sprintf(fmt_string, " %%0%u%s", |
| + | (field_width = bytes_to_oct_digits[size]), |
| + | ISPEC_TO_FORMAT(size_spec, "o", "lo", PRIoMAX)); |
| + | break; |
| + | case 'u': |
| + | fmt = UNSIGNED_DECIMAL; |
| + | sprintf(fmt_string, " %%%u%s", |
| + | (field_width = bytes_to_unsigned_dec_digits[size]), |
| + | ISPEC_TO_FORMAT(size_spec, "u", "lu", PRIuMAX)); |
| + | break; |
| + | case 'x': |
| + | fmt = HEXADECIMAL; |
| + | sprintf(fmt_string, " %%0%u%s", |
| + | (field_width = bytes_to_hex_digits[size]), |
| + | ISPEC_TO_FORMAT(size_spec, "x", "lx", PRIxMAX)); |
| + | break; |
| + | default: |
| + | abort(); |
| + | } |
| + | |
| + | assert(strlen(fmt_string) < FMT_BYTES_ALLOCATED); |
| + | |
| + | switch (size_spec) { |
| + | case CHAR: |
| + | print_function = (fmt == SIGNED_DECIMAL |
| + | ? print_s_char |
| + | : print_char); |
| + | break; |
| + | case SHORT: |
| + | print_function = (fmt == SIGNED_DECIMAL |
| + | ? print_s_short |
| + | : print_short); |
| + | break; |
| + | case INT: |
| + | print_function = print_int; |
| + | break; |
| + | case LONG: |
| + | print_function = print_long; |
| + | break; |
| + | case LONG_LONG: |
| + | print_function = print_long_long; |
| + | break; |
| + | default: |
| + | abort(); |
| + | } |
| + | break; |
| + | |
| + | case 'f': |
| + | fmt = FLOATING_POINT; |
| + | ++s; |
| + | switch (*s) { |
| + | case 'F': |
| + | ++s; |
| + | size = sizeof(float); |
| + | break; |
| + | case 'D': |
| + | ++s; |
| + | size = sizeof(double); |
| + | break; |
| + | case 'L': |
| + | ++s; |
| + | size = sizeof(longdouble_t); |
| + | break; |
| + | default: |
| + | size = sizeof(double); |
| + | if (isdigit(s[0])) { |
| + | size = strtoul(s, &end, 0); |
| + | if (end[0] || size > MAX_FP_TYPE_SIZE |
| + | || fp_type_size[size] == NO_SIZE |
| + | ) { |
| + | bb_error_msg("invalid type string '%s'; " |
| + | "%lu-byte floating point type is not supported", s_orig, size); |
| + | return 1; |
| + | } |
| + | s = end; |
| + | } |
| + | break; |
| + | } |
| + | size_spec = fp_type_size[size]; |
| + | |
| + | switch (size_spec) { |
| + | case FLOAT_SINGLE: |
| + | print_function = print_float; |
| + | /* Don't use %#e; not all systems support it. */ |
| + | pre_fmt_string = " %%%d.%de"; |
| + | fmt_string = xmalloc(strlen(pre_fmt_string)); |
| + | sprintf(fmt_string, pre_fmt_string, |
| + | (field_width = FLT_DIG + 8), FLT_DIG); |
| + | break; |
| + | case FLOAT_DOUBLE: |
| + | print_function = print_double; |
| + | pre_fmt_string = " %%%d.%de"; |
| + | fmt_string = xmalloc(strlen(pre_fmt_string)); |
| + | sprintf(fmt_string, pre_fmt_string, |
| + | (field_width = DBL_DIG + 8), DBL_DIG); |
| + | break; |
| + | case FLOAT_LONG_DOUBLE: |
| + | print_function = print_long_double; |
| + | pre_fmt_string = " %%%d.%dLe"; |
| + | fmt_string = xmalloc(strlen(pre_fmt_string)); |
| + | sprintf(fmt_string, pre_fmt_string, |
| + | (field_width = LDBL_DIG + 8), LDBL_DIG); |
| + | break; |
| + | default: |
| + | abort(); |
| + | } |
| + | break; |
| + | |
| + | case 'a': |
| + | ++s; |
| + | fmt = NAMED_CHARACTER; |
| + | size_spec = CHAR; |
| + | fmt_string = NULL; |
| + | print_function = print_named_ascii; |
| + | field_width = 3; |
| + | break; |
| + | case 'c': |
| + | ++s; |
| + | fmt = CHARACTER; |
| + | size_spec = CHAR; |
| + | fmt_string = NULL; |
| + | print_function = print_ascii; |
| + | field_width = 3; |
| + | break; |
| + | default: |
| + | bb_error_msg("invalid character '%c' in type string '%s'", *s, s_orig); |
| + | return 1; |
| + | } |
| + | |
| + | tspec->size = size_spec; |
| + | tspec->fmt = fmt; |
| + | tspec->print_function = print_function; |
| + | tspec->fmt_string = fmt_string; |
| + | |
| + | tspec->field_width = field_width; |
| + | tspec->hexl_mode_trailer = (*s == 'z'); |
| + | if (tspec->hexl_mode_trailer) |
| + | s++; |
| + | |
| + | if (next != NULL) |
| + | *next = s; |
| + | |
| + | return 0; |
| + | } |
| + | |
| + | /* Given a list of one or more input filenames FILE_LIST, set the global |
| + | file pointer IN_STREAM and the global string INPUT_FILENAME to the |
| + | first one that can be successfully opened. Modify FILE_LIST to |
| + | reference the next filename in the list. A file name of "-" is |
| + | interpreted as standard input. If any file open fails, give an error |
| + | message and return nonzero. */ |
| + | |
| + | static int |
| + | open_next_file(void) |
| + | { |
| + | int err = 0; |
| + | |
| + | do { |
| + | input_filename = *file_list; |
| + | if (input_filename == NULL) |
| + | return err; |
| + | ++file_list; |
| + | |
| + | if (input_filename[0] == '-' && !input_filename[1]) { |
| + | input_filename = "standard input"; |
| + | in_stream = stdin; |
| + | have_read_stdin = 1; |
| + | } else { |
| + | in_stream = fopen(input_filename, "r"); |
| + | if (in_stream == NULL) { |
| + | bb_perror_msg("%s", input_filename); |
| + | err = 1; |
| + | } |
| + | } |
| + | } while (in_stream == NULL); |
| + | |
| + | if (limit_bytes_to_format && !flag_dump_strings) |
| + | setbuf(in_stream, NULL); |
| + | |
| + | return err; |
| + | } |
| + | |
| + | /* Test whether there have been errors on in_stream, and close it if |
| + | it is not standard input. Return nonzero if there has been an error |
| + | on in_stream or stdout; return zero otherwise. This function will |
| + | report more than one error only if both a read and a write error |
| + | have occurred. IN_ERRNO, if nonzero, is the error number |
| + | corresponding to the most recent action for IN_STREAM. */ |
| + | |
| + | static int |
| + | check_and_close(int in_errno) |
| + | { |
| + | int err = 0; |
| + | |
| + | if (in_stream != NULL) { |
| + | if (ferror(in_stream)) { |
| + | bb_error_msg("%s: read error", input_filename); |
| + | if (in_stream != stdin) |
| + | fclose(in_stream); |
| + | err = 1; |
| + | } else if (in_stream != stdin && fclose(in_stream) == EOF) { |
| + | bb_perror_msg("%s", input_filename); |
| + | err = 1; |
| + | } |
| + | in_stream = NULL; |
| + | } |
| + | |
| + | if (ferror(stdout)) { |
| + | bb_error_msg("write error"); |
| + | err = 1; |
| + | } |
| + | |
| + | return err; |
| + | } |
| + | |
| + | /* Decode the modern od format string S. Append the decoded |
| + | representation to the global array SPEC, reallocating SPEC if |
| + | necessary. Return zero if S is valid, nonzero otherwise. */ |
| + | |
| + | static int |
| + | decode_format_string(const char *s) |
| + | { |
| + | const char *s_orig = s; |
| + | assert(s != NULL); |
| + | |
| + | while (*s != '\0') { |
| + | struct tspec tspec; |
| + | const char *next; |
| + | |
| + | if (decode_one_format(s_orig, s, &next, &tspec)) |
| + | return 1; |
| + | |
| + | assert(s != next); |
| + | s = next; |
| + | n_specs++; |
| + | spec = xrealloc(spec, n_specs * sizeof(*spec)); |
| + | memcpy(&spec[n_specs-1], &tspec, sizeof *spec); |
| + | } |
| + | |
| + | return 0; |
| + | } |
| + | |
| + | /* Given a list of one or more input filenames FILE_LIST, set the global |
| + | file pointer IN_STREAM to position N_SKIP in the concatenation of |
| + | those files. If any file operation fails or if there are fewer than |
| + | N_SKIP bytes in the combined input, give an error message and return |
| + | nonzero. When possible, use seek rather than read operations to |
| + | advance IN_STREAM. */ |
| + | |
| + | static int |
| + | skip(uintmax_t n_skip) |
| + | { |
| + | int err = 0; |
| + | int in_errno = 0; |
| + | |
| + | if (n_skip == 0) |
| + | return 0; |
| + | |
| + | while (in_stream != NULL) { /* EOF */ |
| + | struct stat file_stats; |
| + | |
| + | /* First try seeking. For large offsets, this extra work is |
| + | worthwhile. If the offset is below some threshold it may be |
| + | more efficient to move the pointer by reading. There are two |
| + | issues when trying to seek: |
| + | - the file must be seekable. |
| + | - before seeking to the specified position, make sure |
| + | that the new position is in the current file. |
| + | Try to do that by getting file's size using fstat. |
| + | But that will work only for regular files. */ |
| + | |
| + | if (fstat(fileno(in_stream), &file_stats) == 0) { |
| + | /* The st_size field is valid only for regular files |
| + | (and for symbolic links, which cannot occur here). |
| + | If the number of bytes left to skip is at least |
| + | as large as the size of the current file, we can |
| + | decrement n_skip and go on to the next file. */ |
| + | |
| + | if (S_ISREG(file_stats.st_mode) && 0 <= file_stats.st_size) { |
| + | if ((uintmax_t) file_stats.st_size <= n_skip) |
| + | n_skip -= file_stats.st_size; |
| + | else { |
| + | if (fseeko(in_stream, n_skip, SEEK_CUR) != 0) { |
| + | in_errno = errno; |
| + | err = 1; |
| + | } |
| + | n_skip = 0; |
| + | } |
| + | } else { |
| + | |
| + | /* If it's not a regular file with nonnegative size, |
| + | position the file pointer by reading. */ |
| + | char buf[BUFSIZ]; |
| + | size_t n_bytes_read, n_bytes_to_read = BUFSIZ; |
| + | |
| + | while (0 < n_skip) { |
| + | if (n_skip < n_bytes_to_read) |
| + | n_bytes_to_read = n_skip; |
| + | n_bytes_read = fread(buf, 1, n_bytes_to_read, in_stream); |
| + | n_skip -= n_bytes_read; |
| + | if (n_bytes_read != n_bytes_to_read) { |
| + | in_errno = errno; |
| + | err = 1; |
| + | n_skip = 0; |
| + | break; |
| + | } |
| + | } |
| + | } |
| + | if (n_skip == 0) |
| + | break; |
| + | } else { /* cannot fstat() file */ |
| + | bb_perror_msg("%s", input_filename); |
| + | err = 1; |
| + | } |
| + | |
| + | err |= check_and_close(in_errno); |
| + | err |= open_next_file(); |
| + | } |
| + | |
| + | if (n_skip != 0) |
| + | bb_error_msg_and_die("cannot skip past end of combined input"); |
| + | return err; |
| + | } |
| + | |
| + | static void |
| + | format_address_none(uintmax_t address ATTRIBUTE_UNUSED, char c ATTRIBUTE_UNUSED) |
| + | { |
| + | } |
| + | |
| + | static void |
| + | format_address_std(uintmax_t address, char c) |
| + | { |
| + | char buf[MAX_ADDRESS_LENGTH + 2]; |
| + | char *p = buf + sizeof(buf)-1; |
| + | char const *pbound; |
| + | |
| + | *p = '\0'; |
| + | *--p = c; |
| + | pbound = p - address_pad_len; |
| + | |
| + | do { |
| + | *--p = "0123456789abcdef"[address % address_base]; |
| + | address /= address_base; |
| + | } while (address); |
| + | |
| + | while (pbound < p) |
| + | *--p = '0'; |
| + | fputs(p, stdout); |
| + | } |
| + | |
| + | static void |
| + | format_address_paren(uintmax_t address, char c) |
| + | { |
| + | putchar('('); |
| + | format_address_std(address, ')'); |
| + | putchar(c); |
| + | } |
| + | |
| + | static void |
| + | format_address_label(uintmax_t address, char c) |
| + | { |
| + | format_address_std(address, ' '); |
| + | format_address_paren(address + pseudo_offset, c); |
| + | } |
| + | |
| + | /* Write N_BYTES bytes from CURR_BLOCK to standard output once for each |
| + | of the N_SPEC format specs. CURRENT_OFFSET is the byte address of |
| + | CURR_BLOCK in the concatenation of input files, and it is printed |
| + | (optionally) only before the output line associated with the first |
| + | format spec. When duplicate blocks are being abbreviated, the output |
| + | for a sequence of identical input blocks is the output for the first |
| + | block followed by an asterisk alone on a line. It is valid to compare |
| + | the blocks PREV_BLOCK and CURR_BLOCK only when N_BYTES == BYTES_PER_BLOCK. |
| + | That condition may be false only for the last input block -- and then |
| + | only when it has not been padded to length BYTES_PER_BLOCK. */ |
| + | |
| + | static void |
| + | write_block(uintmax_t current_offset, size_t n_bytes, |
| + | const char *prev_block, const char *curr_block) |
| + | { |
| + | static int first = 1; |
| + | static int prev_pair_equal = 0; |
| + | |
| + | if (abbreviate_duplicate_blocks |
| + | && !first |
| + | && n_bytes == bytes_per_block |
| + | && memcmp(prev_block, curr_block, bytes_per_block) == 0 |
| + | ) { |
| + | if (prev_pair_equal) { |
| + | /* The two preceding blocks were equal, and the current |
| + | block is the same as the last one, so print nothing. */ |
| + | } else { |
| + | puts("*"); |
| + | prev_pair_equal = 1; |
| + | } |
| + | } else { |
| + | size_t i; |
| + | |
| + | prev_pair_equal = 0; |
| + | for (i = 0; i < n_specs; i++) { |
| + | if (i == 0) |
| + | format_address(current_offset, '\0'); |
| + | else |
| + | printf("%*s", address_pad_len, ""); |
| + | (*spec[i].print_function) (n_bytes, curr_block, spec[i].fmt_string); |
| + | if (spec[i].hexl_mode_trailer) { |
| + | /* space-pad out to full line width, then dump the trailer */ |
| + | int datum_width = width_bytes[spec[i].size]; |
| + | int blank_fields = (bytes_per_block - n_bytes) / datum_width; |
| + | int field_width = spec[i].field_width + 1; |
| + | printf("%*s", blank_fields * field_width, ""); |
| + | dump_hexl_mode_trailer(n_bytes, curr_block); |
| + | } |
| + | putchar('\n'); |
| + | } |
| + | } |
| + | first = 0; |
| + | } |
| + | |
| + | /* Read a single byte into *C from the concatenation of the input files |
| + | named in the global array FILE_LIST. On the first call to this |
| + | function, the global variable IN_STREAM is expected to be an open |
| + | stream associated with the input file INPUT_FILENAME. If IN_STREAM |
| + | is at end-of-file, close it and update the global variables IN_STREAM |
| + | and INPUT_FILENAME so they correspond to the next file in the list. |
| + | Then try to read a byte from the newly opened file. Repeat if |
| + | necessary until EOF is reached for the last file in FILE_LIST, then |
| + | set *C to EOF and return. Subsequent calls do likewise. The return |
| + | value is nonzero if any errors occured, zero otherwise. */ |
| + | |
| + | static int |
| + | read_char(int *c) |
| + | { |
| + | int err = 0; |
| + | |
| + | *c = EOF; |
| + | |
| + | while (in_stream != NULL) { /* EOF. */ |
| + | *c = fgetc(in_stream); |
| + | if (*c != EOF) |
| + | break; |
| + | err |= check_and_close(errno); |
| + | err |= open_next_file(); |
| + | } |
| + | |
| + | return err; |
| + | } |
| + | |
| + | /* Read N bytes into BLOCK from the concatenation of the input files |
| + | named in the global array FILE_LIST. On the first call to this |
| + | function, the global variable IN_STREAM is expected to be an open |
| + | stream associated with the input file INPUT_FILENAME. If all N |
| + | bytes cannot be read from IN_STREAM, close IN_STREAM and update |
| + | the global variables IN_STREAM and INPUT_FILENAME. Then try to |
| + | read the remaining bytes from the newly opened file. Repeat if |
| + | necessary until EOF is reached for the last file in FILE_LIST. |
| + | On subsequent calls, don't modify BLOCK and return zero. Set |
| + | *N_BYTES_IN_BUFFER to the number of bytes read. If an error occurs, |
| + | it will be detected through ferror when the stream is about to be |
| + | closed. If there is an error, give a message but continue reading |
| + | as usual and return nonzero. Otherwise return zero. */ |
| + | |
| + | static int |
| + | read_block(size_t n, char *block, size_t *n_bytes_in_buffer) |
| + | { |
| + | int err = 0; |
| + | |
| + | assert(0 < n && n <= bytes_per_block); |
| + | |
| + | *n_bytes_in_buffer = 0; |
| + | |
| + | if (n == 0) |
| + | return 0; |
| + | |
| + | while (in_stream != NULL) { /* EOF. */ |
| + | size_t n_needed; |
| + | size_t n_read; |
| + | |
| + | n_needed = n - *n_bytes_in_buffer; |
| + | n_read = fread(block + *n_bytes_in_buffer, 1, n_needed, in_stream); |
| + | *n_bytes_in_buffer += n_read; |
| + | if (n_read == n_needed) |
| + | break; |
| + | err |= check_and_close(errno); |
| + | err |= open_next_file(); |
| + | } |
| + | |
| + | return err; |
| + | } |
| + | |
| + | /* Return the least common multiple of the sizes associated |
| + | with the format specs. */ |
| + | |
| + | static int |
| + | get_lcm(void) |
| + | { |
| + | size_t i; |
| + | int l_c_m = 1; |
| + | |
| + | for (i = 0; i < n_specs; i++) |
| + | l_c_m = lcm(l_c_m, width_bytes[(int) spec[i].size]); |
| + | return l_c_m; |
| + | } |
| + | |
| + | /* If S is a valid traditional offset specification with an optional |
| + | leading '+' return nonzero and set *OFFSET to the offset it denotes. */ |
| + | |
| + | static int |
| + | parse_old_offset(const char *s, uintmax_t *offset) |
| + | { |
| + | static const struct suffix_mult Bb[] = { |
| + | { "B", 1024 }, |
| + | { "b", 512 }, |
| + | { NULL, 0 } |
| + | }; |
| + | |
| + | int radix; |
| + | |
| + | if (*s == '\0') |
| + | return 0; |
| + | |
| + | /* Skip over any leading '+'. */ |
| + | if (s[0] == '+') |
| + | ++s; |
| + | |
| + | /* Determine the radix we'll use to interpret S. If there is a '.', |
| + | it's decimal, otherwise, if the string begins with '0X'or '0x', |
| + | it's hexadecimal, else octal. */ |
| + | if (strchr(s, '.') != NULL) |
| + | radix = 10; |
| + | else { |
| + | if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) |
| + | radix = 16; |
| + | else |
| + | radix = 8; |
| + | } |
| + | |
| + | *offset = xstrtoumax_sfx(s, radix, Bb); |
| + | return 1; |
| + | } |
| + | |
| + | /* Read a chunk of size BYTES_PER_BLOCK from the input files, write the |
| + | formatted block to standard output, and repeat until the specified |
| + | maximum number of bytes has been read or until all input has been |
| + | processed. If the last block read is smaller than BYTES_PER_BLOCK |
| + | and its size is not a multiple of the size associated with a format |
| + | spec, extend the input block with zero bytes until its length is a |
| + | multiple of all format spec sizes. Write the final block. Finally, |
| + | write on a line by itself the offset of the byte after the last byte |
| + | read. Accumulate return values from calls to read_block and |
| + | check_and_close, and if any was nonzero, return nonzero. |
| + | Otherwise, return zero. */ |
| + | |
| + | static int |
| + | dump(void) |
| + | { |
| + | char *block[2]; |
| + | uintmax_t current_offset; |
| + | int idx; |
| + | int err; |
| + | size_t n_bytes_read; |
| + | |
| + | block[0] = xmalloc(2*bytes_per_block); |
| + | block[1] = block[0] + bytes_per_block; |
| + | |
| + | current_offset = n_bytes_to_skip; |
| + | |
| + | idx = 0; |
| + | err = 0; |
| + | if (limit_bytes_to_format) { |
| + | while (1) { |
| + | size_t n_needed; |
| + | if (current_offset >= end_offset) { |
| + | n_bytes_read = 0; |
| + | break; |
| + | } |
| + | n_needed = MIN(end_offset - current_offset, |
| + | (uintmax_t) bytes_per_block); |
| + | err |= read_block(n_needed, block[idx], &n_bytes_read); |
| + | if (n_bytes_read < bytes_per_block) |
| + | break; |
| + | assert(n_bytes_read == bytes_per_block); |
| + | write_block(current_offset, n_bytes_read, |
| + | block[!idx], block[idx]); |
| + | current_offset += n_bytes_read; |
| + | idx = !idx; |
| + | } |
| + | } else { |
| + | while (1) { |
| + | err |= read_block(bytes_per_block, block[idx], &n_bytes_read); |
| + | if (n_bytes_read < bytes_per_block) |
| + | break; |
| + | assert(n_bytes_read == bytes_per_block); |
| + | write_block(current_offset, n_bytes_read, |
| + | block[!idx], block[idx]); |
| + | current_offset += n_bytes_read; |
| + | idx = !idx; |
| + | } |
| + | } |
| + | |
| + | if (n_bytes_read > 0) { |
| + | int l_c_m; |
| + | size_t bytes_to_write; |
| + | |
| + | l_c_m = get_lcm(); |
| + | |
| + | /* Make bytes_to_write the smallest multiple of l_c_m that |
| + | is at least as large as n_bytes_read. */ |
| + | bytes_to_write = l_c_m * ((n_bytes_read + l_c_m - 1) / l_c_m); |
| + | |
| + | memset(block[idx] + n_bytes_read, 0, bytes_to_write - n_bytes_read); |
| + | write_block(current_offset, bytes_to_write, |
| + | block[!idx], block[idx]); |
| + | current_offset += n_bytes_read; |
| + | } |
| + | |
| + | format_address(current_offset, '\n'); |
| + | |
| + | if (limit_bytes_to_format && current_offset >= end_offset) |
| + | err |= check_and_close(0); |
| + | |
| + | free(block[0]); |
| + | |
| + | return err; |
| + | } |
| + | |
| + | /* STRINGS mode. Find each "string constant" in the input. |
| + | A string constant is a run of at least 'string_min' ASCII |
| + | graphic (or formatting) characters terminated by a null. |
| + | Based on a function written by Richard Stallman for a |
| + | traditional version of od. Return nonzero if an error |
| + | occurs. Otherwise, return zero. */ |
| + | |
| + | static int |
| + | dump_strings(void) |
| + | { |
| + | size_t bufsize = MAX(100, string_min); |
| + | char *buf = xmalloc(bufsize); |
| + | uintmax_t address = n_bytes_to_skip; |
| + | int err; |
| + | |
| + | err = 0; |
| + | while (1) { |
| + | size_t i; |
| + | int c; |
| + | |
| + | /* See if the next 'string_min' chars are all printing chars. */ |
| + | tryline: |
| + | |
| + | if (limit_bytes_to_format |
| + | && (end_offset < string_min || end_offset - string_min <= address) |
| + | ) { |
| + | break; |
| + | } |
| + | |
| + | for (i = 0; i < string_min; i++) { |
| + | err |= read_char(&c); |
| + | address++; |
| + | if (c < 0) { |
| + | free(buf); |
| + | return err; |
| + | } |
| + | if (!ISPRINT(c)) |
| + | /* Found a non-printing. Try again starting with next char. */ |
| + | goto tryline; |
| + | buf[i] = c; |
| + | } |
| + | |
| + | /* We found a run of 'string_min' printable characters. |
| + | Now see if it is terminated with a null byte. */ |
| + | while (!limit_bytes_to_format || address < end_offset) { |
| + | if (i == bufsize) { |
| + | bufsize *= 2; |
| + | buf = xrealloc(buf, bufsize * sizeof(*buf)); |
| + | } |
| + | err |= read_char(&c); |
| + | address++; |
| + | if (c < 0) { |
| + | free(buf); |
| + | return err; |
| + | } |
| + | if (c == '\0') |
| + | break; /* It is; print this string. */ |
| + | if (!ISPRINT(c)) |
| + | goto tryline; /* It isn't; give up on this string. */ |
| + | buf[i++] = c; /* String continues; store it all. */ |
| + | } |
| + | |
| + | /* If we get here, the string is all printable and null-terminated, |
| + | so print it. It is all in 'buf' and 'i' is its length. */ |
| + | buf[i] = 0; |
| + | format_address(address - i - 1, ' '); |
| + | |
| + | for (i = 0; (c = buf[i]); i++) { |
| + | switch (c) { |
| + | case '\007': |
| + | fputs("\\a", stdout); |
| + | break; |
| + | |
| + | case '\b': |
| + | fputs("\\b", stdout); |
| + | break; |
| + | |
| + | case '\f': |
| + | fputs("\\f", stdout); |
| + | break; |
| + | |
| + | case '\n': |
| + | fputs("\\n", stdout); |
| + | break; |
| + | |
| + | case '\r': |
| + | fputs("\\r", stdout); |
| + | break; |
| + | |
| + | case '\t': |
| + | fputs("\\t", stdout); |
| + | break; |
| + | |
| + | case '\v': |
| + | fputs("\\v", stdout); |
| + | break; |
| + | |
| + | default: |
| + | putc(c, stdout); |
| + | } |
| + | } |
| + | putchar('\n'); |
| + | } |
| + | |
| + | /* We reach this point only if we search through |
| + | (max_bytes_to_format - string_min) bytes before reaching EOF. */ |
| + | |
| + | free(buf); |
| + | |
| + | err |= check_and_close(0); |
| + | return err; |
| + | } |
| + | |
| + | int |
| + | od_main(int argc, char **argv) |
| + | { |
| + | static const struct suffix_mult bkm[] = { |
| + | { "b", 512 }, |
| + | { "k", 1024 }, |
| + | { "m", 1024*1024 }, |
| + | { NULL, 0 } |
| + | }; |
| + | static const struct option long_options[] = { |
| + | { "skip-bytes", required_argument, NULL, 'j' }, |
| + | { "address-radix", required_argument, NULL, 'A' }, |
| + | { "read-bytes", required_argument, NULL, 'N' }, |
| + | { "format", required_argument, NULL, 't' }, |
| + | { "output-duplicates", no_argument, NULL, 'v' }, |
| + | { "strings", optional_argument, NULL, 's' }, |
| + | { "traditional", no_argument, NULL, TRADITIONAL_OPTION }, |
| + | { "width", optional_argument, NULL, 'w' }, |
| + | { NULL, 0, NULL, 0 } |
| + | }; |
| + | |
| + | int c; |
| + | int n_files; |
| + | int l_c_m; |
| + | size_t desired_width = 0; // only for gcc |
| + | int width_specified = 0; |
| + | int n_failed_decodes = 0; |
| + | int err; |
| + | |
| + | /* The old-style 'pseudo starting address' to be printed in parentheses |
| + | after any true address. */ |
| + | uintmax_t pseudo_start = 0; // only for gcc |
| + | |
| + | err = 0; |
| + | |
| + | integral_type_size[sizeof(char)] = CHAR; |
| + | integral_type_size[sizeof(short)] = SHORT; |
| + | integral_type_size[sizeof(int)] = INT; |
| + | integral_type_size[sizeof(long)] = LONG; |
| + | /* If 'long' and 'long long' have the same size, it's fine |
| + | to overwrite the entry for 'long' with this one. */ |
| + | integral_type_size[sizeof(ulonglong_t)] = LONG_LONG; |
| + | |
| + | fp_type_size[sizeof(float)] = FLOAT_SINGLE; |
| + | /* The array entry for 'double' is filled in after that for longdouble_t |
| + | so that if 'long double' is the same type or if long double isn't |
| + | supported FLOAT_LONG_DOUBLE will never be used. */ |
| + | fp_type_size[sizeof(longdouble_t)] = FLOAT_LONG_DOUBLE; |
| + | fp_type_size[sizeof(double)] = FLOAT_DOUBLE; |
| + | |
| + | spec = NULL; |
| + | |
| + | format_address = format_address_std; |
| + | address_base = 8; |
| + | address_pad_len = 7; |
| + | flag_dump_strings = 0; |
| + | |
| + | while ((c = getopt_long(argc, argv, "A:N:abcdfhij:lot:vxs:w:", long_options, NULL)) != -1) { |
| + | switch (c) { |
| + | case 0: |
| + | break; |
| + | case 'A': |
| + | switch (optarg[0]) { |
| + | case 'd': |
| + | format_address = format_address_std; |
| + | address_base = 10; |
| + | address_pad_len = 7; |
| + | break; |
| + | case 'o': |
| + | format_address = format_address_std; |
| + | address_base = 8; |
| + | address_pad_len = 7; |
| + | break; |
| + | case 'x': |
| + | format_address = format_address_std; |
| + | address_base = 16; |
| + | address_pad_len = 6; |
| + | break; |
| + | case 'n': |
| + | format_address = format_address_none; |
| + | address_pad_len = 0; |
| + | break; |
| + | default: |
| + | bb_error_msg_and_die("bad output address radix '%c' " |
| + | "(must be [doxn])", optarg[0]); |
| + | break; |
| + | } |
| + | break; |
| + | |
| + | case 'j': |
| + | n_bytes_to_skip = xstrtoumax_sfx(optarg, 0, bkm); |
| + | break; |
| + | case 'N': |
| + | limit_bytes_to_format = 1; |
| + | |
| + | max_bytes_to_format = xstrtoumax_sfx(optarg, 0, bkm); |
| + | break; |
| + | case 's': |
| + | if (optarg == NULL) |
| + | string_min = 3; |
| + | else { |
| + | string_min = xstrtoumax_range_sfx(optarg, 0, 0, SIZE_MAX, bkm); |
| + | } |
| + | flag_dump_strings = 1; |
| + | break; |
| + | case 't': |
| + | if (decode_format_string(optarg)) |
| + | ++n_failed_decodes; |
| + | break; |
| + | case 'v': |
| + | abbreviate_duplicate_blocks = 0; |
| + | break; |
| + | case TRADITIONAL_OPTION: |
| + | traditional = 1; |
| + | break; |
| + | |
| + | /* The next several cases map the traditional format |
| + | specification options to the corresponding modern format |
| + | specs. GNU od accepts any combination of old- and |
| + | new-style options. Format specification options accumulate. */ |
| + | |
| + | #define CASE_OLD_ARG(old_char,new_string) \ |
| + | case old_char: \ |
| + | if (decode_format_string(new_string)) \ |
| + | ++n_failed_decodes; \ |
| + | break |
| + | |
| + | CASE_OLD_ARG('a', "a"); |
| + | CASE_OLD_ARG('b', "oC"); |
| + | CASE_OLD_ARG('c', "c"); |
| + | CASE_OLD_ARG('d', "u2"); |
| + | CASE_OLD_ARG('f', "fF"); |
| + | CASE_OLD_ARG('h', "x2"); |
| + | CASE_OLD_ARG('i', "d2"); |
| + | CASE_OLD_ARG('l', "d4"); |
| + | CASE_OLD_ARG('o', "o2"); |
| + | CASE_OLD_ARG('x', "x2"); |
| + | |
| + | /* FIXME: POSIX 1003.1-2001 with XSI requires this: |
| + | CASE_OLD_ARG('s', "d2"); |
| + | for the traditional syntax, but this conflicts with case |
| + | 's' above. */ |
| + | |
| + | #undef CASE_OLD_ARG |
| + | |
| + | case 'w': |
| + | width_specified = 1; |
| + | desired_width = 32; |
| + | if (optarg) |
| + | desired_width = xatoul_range(optarg, 0, SIZE_MAX); |
| + | break; |
| + | default: |
| + | bb_show_usage(); |
| + | break; |
| + | } |
| + | } |
| + | |
| + | if (n_failed_decodes > 0) |
| + | exit(EXIT_FAILURE); |
| + | |
| + | if (flag_dump_strings && n_specs > 0) |
| + | bb_error_msg_and_die("no type may be specified when dumping strings"); |
| + | |
| + | n_files = argc - optind; |
| + | |
| + | /* If the --traditional option is used, there may be from |
| + | 0 to 3 remaining command line arguments; handle each case |
| + | separately. |
| + | od [file] [[+]offset[.][b] [[+]label[.][b]]] |
| + | The offset and pseudo_start have the same syntax. |
| + | |
| + | FIXME: POSIX 1003.1-2001 with XSI requires support for the |
| + | traditional syntax even if --traditional is not given. */ |
| + | |
| + | if (traditional) { |
| + | uintmax_t offset; |
| + | |
| + | if (n_files == 1) { |
| + | if (parse_old_offset(argv[optind], &offset)) { |
| + | n_bytes_to_skip = offset; |
| + | --n_files; |
| + | ++argv; |
| + | } |
| + | } else if (n_files == 2) { |
| + | uintmax_t o1, o2; |
| + | |
| + | if (parse_old_offset(argv[optind], &o1) |
| + | && parse_old_offset(argv[optind + 1], &o2) |
| + | ) { |
| + | n_bytes_to_skip = o1; |
| + | flag_pseudo_start = 1; |
| + | pseudo_start = o2; |
| + | argv += 2; |
| + | n_files -= 2; |
| + | } else if (parse_old_offset(argv[optind + 1], &o2)) { |
| + | n_bytes_to_skip = o2; |
| + | --n_files; |
| + | argv[optind + 1] = argv[optind]; |
| + | ++argv; |
| + | } else { |
| + | bb_error_msg_and_die("invalid second operand " |
| + | "in compatibility mode '%s'", argv[optind + 1]); |
| + | } |
| + | } else if (n_files == 3) { |
| + | uintmax_t o1, o2; |
| + | if (parse_old_offset(argv[optind + 1], &o1) |
| + | && parse_old_offset(argv[optind + 2], &o2) |
| + | ) { |
| + | n_bytes_to_skip = o1; |
| + | flag_pseudo_start = 1; |
| + | pseudo_start = o2; |
| + | argv[optind + 2] = argv[optind]; |
| + | argv += 2; |
| + | n_files -= 2; |
| + | } else { |
| + | bb_error_msg_and_die("in compatibility mode " |
| + | "the last two arguments must be offsets"); |
| + | } |
| + | } else if (n_files > 3) { |
| + | bb_error_msg_and_die("compatibility mode supports " |
| + | "at most three arguments"); |
| + | } |
| + | |
| + | if (flag_pseudo_start) { |
| + | if (format_address == format_address_none) { |
| + | address_base = 8; |
| + | address_pad_len = 7; |
| + | format_address = format_address_paren; |
| + | } else |
| + | format_address = format_address_label; |
| + | } |
| + | } |
| + | |
| + | if (limit_bytes_to_format) { |
| + | end_offset = n_bytes_to_skip + max_bytes_to_format; |
| + | if (end_offset < n_bytes_to_skip) |
| + | bb_error_msg_and_die("skip-bytes + read-bytes is too large"); |
| + | } |
| + | |
| + | if (n_specs == 0) { |
| + | if (decode_format_string("o2")) { |
| + | /* This happens on Cray systems that don't have a 2-byte |
| + | integral type. */ |
| + | exit(EXIT_FAILURE); |
| + | } |
| + | n_specs = 1; |
| + | } |
| + | |
| + | if (n_files > 0) { |
| + | /* Set the global pointer FILE_LIST so that it |
| + | references the first file-argument on the command-line. */ |
| + | file_list = (char const *const *) &argv[optind]; |
| + | } else { |
| + | /* No files were listed on the command line. |
| + | Set the global pointer FILE_LIST so that it |
| + | references the null-terminated list of one name: "-". */ |
| + | file_list = default_file_list; |
| + | } |
| + | |
| + | /* open the first input file */ |
| + | err |= open_next_file(); |
| + | if (in_stream == NULL) |
| + | goto cleanup; |
| + | |
| + | /* skip over any unwanted header bytes */ |
| + | err |= skip(n_bytes_to_skip); |
| + | if (in_stream == NULL) |
| + | goto cleanup; |
| + | |
| + | pseudo_offset = (flag_pseudo_start ? pseudo_start - n_bytes_to_skip : 0); |
| + | |
| + | /* Compute output block length. */ |
| + | l_c_m = get_lcm(); |
| + | |
| + | if (width_specified) { |
| + | if (desired_width != 0 && desired_width % l_c_m == 0) |
| + | bytes_per_block = desired_width; |
| + | else { |
| + | bb_error_msg("warning: invalid width %lu; using %d instead", |
| + | (unsigned long) desired_width, l_c_m); |
| + | bytes_per_block = l_c_m; |
| + | } |
| + | } else { |
| + | if (l_c_m < DEFAULT_BYTES_PER_BLOCK) |
| + | bytes_per_block = l_c_m * (DEFAULT_BYTES_PER_BLOCK / l_c_m); |
| + | else |
| + | bytes_per_block = l_c_m; |
| + | } |
| + | |
| + | #ifdef DEBUG |
| + | for (i = 0; i < n_specs; i++) { |
| + | printf("%d: fmt=\"%s\" width=%d\n", |
| + | i, spec[i].fmt_string, width_bytes[spec[i].size]); |
| + | } |
| + | #endif |
| + | |
| + | err |= (flag_dump_strings ? dump_strings() : dump()); |
| + | |
| + | cleanup: |
| + | |
| + | if (have_read_stdin && fclose(stdin) == EOF) |
| + | bb_perror_msg_and_die("standard input"); |
| + | |
| + | exit(err == 0 ? EXIT_SUCCESS : EXIT_FAILURE); |
| + | } |