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- /* od -- dump files in octal and other formats
- Copyright (C) 92, 95, 1996 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. */
-
- /* AIX requires this to be the first thing in the file. */
- #include <config.h>
-
- #ifdef __GNUC__
- #define alloca __builtin_alloca
- #else /* not __GNUC__ */
- #if HAVE_ALLOCA_H
- #include <alloca.h>
- #else /* not HAVE_ALLOCA_H */
- #ifdef _AIX
- #pragma alloca
- #else /* not _AIX */
- #ifdef _WIN32
- #include <malloc.h>
- #include <io.h>
- #else
- char *alloca ();
- #endif /* not _WIN32 */
- #endif /* not _AIX */
- #endif /* not HAVE_ALLOCA_H */
- #endif /* not __GNUC__ */
-
- #include <stdio.h>
- #include <assert.h>
- #include <getopt.h>
- #include <sys/types.h>
- #include "system.h"
- #include "xstrtoul.h"
- #include "error.h"
-
- #if defined(__GNUC__) || defined(STDC_HEADERS)
- #include <float.h>
- #endif
-
- #ifdef HAVE_LONG_DOUBLE
- typedef long double LONG_DOUBLE;
- #else
- typedef double LONG_DOUBLE;
- #endif
-
- #if HAVE_LIMITS_H
- # include <limits.h>
- #endif
- #ifndef SCHAR_MAX
- # define SCHAR_MAX 127
- #endif
- #ifndef SCHAR_MIN
- # define SCHAR_MIN (-128)
- #endif
- #ifndef SHRT_MAX
- # define SHRT_MAX 32767
- #endif
- #ifndef SHRT_MIN
- # define SHRT_MIN (-32768)
- #endif
- #ifndef ULONG_MAX
- # define ULONG_MAX ((unsigned long) ~(unsigned long) 0)
- #endif
-
- #if HAVE_VALUES_H
- # include <values.h>
- #endif
-
- #ifndef BITSPERBYTE
- # define BITSPERBYTE 8
- #endif
-
- #ifndef OFF_T_MAX
- # define OFF_T_MAX ((off_t)(~((off_t)1 << (sizeof (off_t) * BITSPERBYTE - 1))))
- #endif
-
- #define STREQ(a,b) (strcmp((a), (b)) == 0)
-
- #ifndef MAX
- # define MAX(a, b) ((a) > (b) ? (a) : (b))
- #endif
-
- #ifndef MIN
- # define MIN(a,b) (((a) < (b)) ? (a) : (b))
- #endif
-
- #if defined (_WIN32) && defined (_O_BINARY)
- # define WINDOWS_SETFILEMODE_BINARY(IN_STREAM, FILENAME) \
- do \
- { /* Turn off DOS text file modes, "rb" doesn't work on stdin. */\
- if (_setmode (_fileno ((IN_STREAM)), _O_BINARY) == -1) \
- { \
- error (0, errno, "%s", (FILENAME)); \
- err = 1; \
- continue; \
- } \
- } \
- while (0)
- #else
- # define WINDOWS_SETFILEMODE_BINARY(IN_STREAM, FILENAME) /* empty */
- #endif
-
- /* 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
-
- char *xmalloc ();
- char *xrealloc ();
-
- enum size_spec
- {
- NO_SIZE,
- CHAR,
- SHORT,
- INT,
- LONG,
- FLOAT_SINGLE,
- FLOAT_DOUBLE,
- FLOAT_LONG_DOUBLE
- };
-
- enum output_format
- {
- SIGNED_DECIMAL,
- UNSIGNED_DECIMAL,
- OCTAL,
- HEXADECIMAL,
- FLOATING_POINT,
- NAMED_CHARACTER,
- CHARACTER
- };
-
- /* Each output format specification (from POSIX `-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) ();
- char *fmt_string;
- };
-
- /* The name this program was run with. */
- char *program_name;
-
- /* 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 int bytes_to_oct_digits[] =
- {0, 3, 6, 8, 11, 14, 16, 19, 22, 25, 27, 30, 32, 35, 38, 41, 43};
-
- static const unsigned int 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 int 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 int 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 int width_bytes[] =
- {
- -1,
- sizeof (char),
- sizeof (short int),
- sizeof (int),
- sizeof (long int),
- sizeof (float),
- sizeof (double),
- sizeof (LONG_DOUBLE)
- };
-
- /* Names for some non-printing characters. */
- static const char *const charname[33] =
- {
- "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"
- };
-
- /* A printf control string for printing a file offset. */
- static const char *output_address_fmt_string;
-
- /* FIXME: make this the number of octal digits in an unsigned long. */
- #define MAX_ADDRESS_LENGTH 13
-
- /* Space for a normal address, a space, a pseudo address, parentheses
- around the pseudo address, and a trailing zero byte. */
- static char address_fmt_buffer[2 * MAX_ADDRESS_LENGTH + 4];
- static char address_pad[MAX_ADDRESS_LENGTH + 1];
-
- static unsigned long int string_min;
- static unsigned long int flag_dump_strings;
-
- /* Non-zero if we should recognize the pre-POSIX 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 long int flag_pseudo_start;
-
- /* The difference between the old-style pseudo starting address and
- the number of bytes to skip. */
- static long int pseudo_offset;
-
- /* Function to format an address and optionally an additional parenthesized
- pseudo-address; it returns the formatted string. */
- static const char *(*format_address) __P ((long unsigned int));
-
- /* The number of input bytes to skip before formatting and writing. */
- static off_t n_bytes_to_skip = 0;
-
- /* When nonzero, MAX_BYTES_TO_FORMAT is the maximum number of bytes
- to be read and formatted. Otherwise all input is formatted. */
- static int limit_bytes_to_format = 0;
-
- /* The maximum number of bytes that will be formatted. This
- value is used only when LIMIT_BYTES_TO_FORMAT is nonzero. */
- static off_t max_bytes_to_format;
-
- /* 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 unsigned int n_specs;
-
- /* The allocated length of SPEC. */
- static unsigned int n_specs_allocated;
-
- /* 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 unsigned int 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.
- If no file-arguments were specified, this variable is initialized
- to { "-", NULL }. */
- static char const *const *file_list;
-
- /* 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 LONGEST_INTEGRAL_TYPE long int
-
- #define MAX_INTEGRAL_TYPE_SIZE sizeof(LONGEST_INTEGRAL_TYPE)
- static enum size_spec integral_type_size[MAX_INTEGRAL_TYPE_SIZE + 1];
-
- #define MAX_FP_TYPE_SIZE sizeof(LONG_DOUBLE)
- static enum size_spec fp_type_size[MAX_FP_TYPE_SIZE + 1];
-
- /* If nonzero, display usage information and exit. */
- static int show_help;
-
- /* If nonzero, print the version on standard output then exit. */
- static int show_version;
-
- static struct option const long_options[] =
- {
- /* POSIX 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'},
-
- /* non-POSIX options. */
- {"strings", optional_argument, NULL, 's'},
- {"traditional", no_argument, NULL, 'B'},
- {"width", optional_argument, NULL, 'w'},
- {"help", no_argument, &show_help, 1},
- {"version", no_argument, &show_version, 1},
- {NULL, 0, NULL, 0}
- };
-
- static void
- usage (int status)
- {
- if (status != 0)
- fprintf (stderr, _("Try `%s --help' for more information.\n"),
- program_name);
- else
- {
- printf (_("\
- Usage: %s [OPTION]... [FILE]...\n\
- or: %s --traditional [FILE] [[+]OFFSET [[+]LABEL]]\n\
- "),
- program_name, program_name);
- printf (_("\
- Write an unambiguous representation, octal bytes by default, of FILE\n\
- to standard output. With no FILE, or when FILE is -, read standard input.\n\
- \n\
- -A, --address-radix=RADIX decide how file offsets are printed\n\
- -N, --read-bytes=BYTES limit dump to BYTES input bytes per file\n\
- -j, --skip-bytes=BYTES skip BYTES input bytes first on each file\n\
- -s, --strings[=BYTES] output strings of at least BYTES graphic chars\n\
- -t, --format=TYPE select output format or formats\n\
- -v, --output-duplicates do not use * to mark line suppression\n\
- -w, --width[=BYTES] output BYTES bytes per output line\n\
- --traditional accept arguments in pre-POSIX form\n\
- --help display this help and exit\n\
- --version output version information and exit\n\
- \n\
- Pre-POSIX format specifications may be intermixed, they accumulate:\n\
- -a same as -t a, select named characters\n\
- -b same as -t oC, select octal bytes\n\
- -c same as -t c, select ASCII characters or backslash escapes\n\
- -d same as -t u2, select unsigned decimal shorts\n\
- -f same as -t fF, select floats\n\
- -h same as -t x2, select hexadecimal shorts\n\
- -i same as -t d2, select decimal shorts\n\
- -l same as -t d4, select decimal longs\n\
- -o same as -t o2, select octal shorts\n\
- -x same as -t x2, select hexadecimal shorts\n\
- "));
- printf (_("\
- \n\
- For older syntax (second call format), OFFSET means -j OFFSET. LABEL\n\
- is the pseudo-address at first byte printed, incremented when dump is\n\
- progressing. For OFFSET and LABEL, a 0x or 0X prefix indicates\n\
- hexadecimal, suffixes maybe . for octal and b multiply by 512.\n\
- \n\
- TYPE is made up of one or more of these specifications:\n\
- \n\
- a named character\n\
- c ASCII character or backslash escape\n\
- d[SIZE] signed decimal, SIZE bytes per integer\n\
- f[SIZE] floating point, SIZE bytes per integer\n\
- o[SIZE] octal, SIZE bytes per integer\n\
- u[SIZE] unsigned decimal, SIZE bytes per integer\n\
- x[SIZE] hexadecimal, SIZE bytes per integer\n\
- \n\
- SIZE is a number. For TYPE in doux, SIZE may also be C for\n\
- sizeof(char), S for sizeof(short), I for sizeof(int) or L for\n\
- sizeof(long). If TYPE is f, SIZE may also be F for sizeof(float), D\n\
- for sizeof(double) or L for sizeof(long double).\n\
- \n\
- RADIX is d for decimal, o for octal, x for hexadecimal or n for none.\n\
- BYTES is hexadecimal with 0x or 0X prefix, it is multiplied by 512\n\
- with b suffix, by 1024 with k and by 1048576 with m. -s without a\n\
- number implies 3. -w without a number implies 32. By default, od\n\
- uses -A o -t d2 -w 16.\n\
- "));
- }
- exit (status == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
- }
-
- /* Compute the greatest common denominator of U and V
- using Euclid's algorithm. */
-
- static unsigned int
- gcd (unsigned int u, unsigned int v)
- {
- unsigned int t;
- while (v != 0)
- {
- t = u % v;
- u = v;
- v = t;
- }
- return u;
- }
-
- /* Compute the least common multiple of U and V. */
-
- static unsigned int
- lcm (unsigned int u, unsigned int v)
- {
- unsigned int t = gcd (u, v);
- if (t == 0)
- return 0;
- return u * v / t;
- }
-
- static void
- print_s_char (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
- {
- int i;
- for (i = n_bytes; i > 0; i--)
- {
- int tmp = (unsigned) *(const unsigned char *) block;
- if (tmp > SCHAR_MAX)
- tmp -= SCHAR_MAX - SCHAR_MIN + 1;
- assert (tmp <= SCHAR_MAX);
- printf (fmt_string, tmp, (i == 1 ? '\n' : ' '));
- block += sizeof (unsigned char);
- }
- }
-
- static void
- print_char (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
- {
- int i;
- for (i = n_bytes; i > 0; i--)
- {
- unsigned int tmp = *(const unsigned char *) block;
- printf (fmt_string, tmp, (i == 1 ? '\n' : ' '));
- block += sizeof (unsigned char);
- }
- }
-
- static void
- print_s_short (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
- {
- int i;
- for (i = n_bytes / sizeof (unsigned short); i > 0; i--)
- {
- int tmp = (unsigned) *(const unsigned short *) block;
- if (tmp > SHRT_MAX)
- tmp -= SHRT_MAX - SHRT_MIN + 1;
- assert (tmp <= SHRT_MAX);
- printf (fmt_string, tmp, (i == 1 ? '\n' : ' '));
- block += sizeof (unsigned short);
- }
- }
- static void
- print_short (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
- {
- int i;
- for (i = n_bytes / sizeof (unsigned short); i > 0; i--)
- {
- unsigned int tmp = *(const unsigned short *) block;
- printf (fmt_string, tmp, (i == 1 ? '\n' : ' '));
- block += sizeof (unsigned short);
- }
- }
-
- static void
- print_int (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
- {
- int i;
- for (i = n_bytes / sizeof (unsigned int); i > 0; i--)
- {
- unsigned int tmp = *(const unsigned int *) block;
- printf (fmt_string, tmp, (i == 1 ? '\n' : ' '));
- block += sizeof (unsigned int);
- }
- }
-
- static void
- print_long (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
- {
- int i;
- for (i = n_bytes / sizeof (unsigned long); i > 0; i--)
- {
- unsigned long tmp = *(const unsigned long *) block;
- printf (fmt_string, tmp, (i == 1 ? '\n' : ' '));
- block += sizeof (unsigned long);
- }
- }
-
- static void
- print_float (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
- {
- int i;
- for (i = n_bytes / sizeof (float); i > 0; i--)
- {
- float tmp = *(const float *) block;
- printf (fmt_string, tmp, (i == 1 ? '\n' : ' '));
- block += sizeof (float);
- }
- }
-
- static void
- print_double (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
- {
- int i;
- for (i = n_bytes / sizeof (double); i > 0; i--)
- {
- double tmp = *(const double *) block;
- printf (fmt_string, tmp, (i == 1 ? '\n' : ' '));
- block += sizeof (double);
- }
- }
-
- #ifdef HAVE_LONG_DOUBLE
- static void
- print_long_double (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
- {
- int i;
- for (i = n_bytes / sizeof (LONG_DOUBLE); i > 0; i--)
- {
- LONG_DOUBLE tmp = *(const LONG_DOUBLE *) block;
- printf (fmt_string, tmp, (i == 1 ? '\n' : ' '));
- block += sizeof (LONG_DOUBLE);
- }
- }
-
- #endif
-
- static void
- print_named_ascii (long unsigned int n_bytes, const char *block,
- const char *unused_fmt_string)
- {
- int i;
- for (i = n_bytes; i > 0; i--)
- {
- unsigned int c = *(const unsigned char *) block;
- unsigned int 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%c", s, (i == 1 ? '\n' : ' '));
- block += sizeof (unsigned char);
- }
- }
-
- static void
- print_ascii (long unsigned int n_bytes, const char *block,
- const char *unused_fmt_string)
- {
- int i;
- for (i = n_bytes; i > 0; i--)
- {
- unsigned int c = *(const 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%c", s, (i == 1 ? '\n' : ' '));
- block += sizeof (unsigned char);
- }
- }
-
- /* Convert a null-terminated (possibly zero-length) string S to an
- unsigned long integer value. If S points to a non-digit set *P to S,
- *VAL to 0, and return 0. Otherwise, accumulate the integer value of
- the string of digits. If the string of digits represents a value
- larger than ULONG_MAX, don't modify *VAL or *P and return nonzero.
- Otherwise, advance *P to the first non-digit after S, set *VAL to
- the result of the conversion and return zero. */
-
- static int
- simple_strtoul (const char *s, const char **p, long unsigned int *val)
- {
- unsigned long int sum;
-
- sum = 0;
- while (ISDIGIT (*s))
- {
- unsigned int c = *s++ - '0';
- if (sum > (ULONG_MAX - c) / 10)
- return 1;
- sum = sum * 10 + c;
- }
- *p = s;
- *val = sum;
- return 0;
- }
-
- /* If S points to a single valid POSIX-style 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 int size;
- enum output_format fmt;
- const char *pre_fmt_string;
- char *fmt_string;
- void (*print_function) ();
- const char *p;
- unsigned int c;
-
- 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 int);
- break;
-
- default:
- if (simple_strtoul (s, &p, &size) != 0)
- {
- /* The integer at P in S would overflow an unsigned long.
- A digit string that long is sufficiently odd looking
- that the following diagnostic is sufficient. */
- error (0, 0, _("invalid type string `%s'"), s_orig);
- return 1;
- }
- if (p == s)
- size = sizeof (int);
- else
- {
- if (size > MAX_INTEGRAL_TYPE_SIZE
- || integral_type_size[size] == NO_SIZE)
- {
- error (0, 0, _("invalid type string `%s';\n\
- this system doesn't provide a %lu-byte integral type"), s_orig, size);
- return 1;
- }
- s = p;
- }
- break;
- }
-
- #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%sd%%c",
- bytes_to_signed_dec_digits[size],
- (size_spec == LONG ? "l" : ""));
- break;
-
- case 'o':
- fmt = OCTAL;
- sprintf (fmt_string, "%%0%u%so%%c",
- bytes_to_oct_digits[size],
- (size_spec == LONG ? "l" : ""));
- break;
-
- case 'u':
- fmt = UNSIGNED_DECIMAL;
- sprintf (fmt_string, "%%%u%su%%c",
- bytes_to_unsigned_dec_digits[size],
- (size_spec == LONG ? "l" : ""));
- break;
-
- case 'x':
- fmt = HEXADECIMAL;
- sprintf (fmt_string, "%%0%u%sx%%c",
- bytes_to_hex_digits[size],
- (size_spec == LONG ? "l" : ""));
- 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;
-
- 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 (LONG_DOUBLE);
- break;
-
- default:
- if (simple_strtoul (s, &p, &size) != 0)
- {
- /* The integer at P in S would overflow an unsigned long.
- A digit string that long is sufficiently odd looking
- that the following diagnostic is sufficient. */
- error (0, 0, _("invalid type string `%s'"), s_orig);
- return 1;
- }
- if (p == s)
- size = sizeof (double);
- else
- {
- if (size > MAX_FP_TYPE_SIZE
- || fp_type_size[size] == NO_SIZE)
- {
- error (0, 0, _("invalid type string `%s';\n\
- this system doesn't provide a %lu-byte floating point type"), s_orig, size);
- return 1;
- }
- s = p;
- }
- 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%%c";
- fmt_string = xmalloc (strlen (pre_fmt_string));
- sprintf (fmt_string, pre_fmt_string,
- FLT_DIG + 8, FLT_DIG);
- break;
-
- case FLOAT_DOUBLE:
- print_function = print_double;
- pre_fmt_string = "%%%d.%de%%c";
- fmt_string = xmalloc (strlen (pre_fmt_string));
- sprintf (fmt_string, pre_fmt_string,
- DBL_DIG + 8, DBL_DIG);
- break;
-
- #ifdef HAVE_LONG_DOUBLE
- case FLOAT_LONG_DOUBLE:
- print_function = print_long_double;
- pre_fmt_string = "%%%d.%dLe%%c";
- fmt_string = xmalloc (strlen (pre_fmt_string));
- sprintf (fmt_string, pre_fmt_string,
- LDBL_DIG + 8, LDBL_DIG);
- break;
- #endif
-
- default:
- abort ();
- }
- break;
-
- case 'a':
- ++s;
- fmt = NAMED_CHARACTER;
- size_spec = CHAR;
- fmt_string = NULL;
- print_function = print_named_ascii;
- break;
-
- case 'c':
- ++s;
- fmt = CHARACTER;
- size_spec = CHAR;
- fmt_string = NULL;
- print_function = print_ascii;
- break;
-
- default:
- error (0, 0, _("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;
-
- if (next != NULL)
- *next = s;
-
- return 0;
- }
-
- /* Decode the POSIX-style 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;
-
- if (n_specs >= n_specs_allocated)
- {
- n_specs_allocated = 1 + (3 * n_specs_allocated) / 2;
- spec = (struct tspec *) xrealloc (spec, (n_specs_allocated
- * sizeof (struct tspec)));
- }
-
- memcpy ((char *) &spec[n_specs], (char *) &tspec,
- sizeof (struct tspec));
- ++n_specs;
- }
-
- 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. A file name of "-" is interpreted as standard
- input. */
-
- static int
- skip (off_t n_skip)
- {
- int err;
-
- err = 0;
- for ( /* empty */ ; *file_list != NULL; ++file_list)
- {
- struct stat file_stats;
- int j;
-
- if (STREQ (*file_list, "-"))
- {
- input_filename = _("standard input");
- in_stream = stdin;
- have_read_stdin = 1;
- }
- else
- {
- input_filename = *file_list;
- in_stream = fopen (input_filename, "r");
- if (in_stream == NULL)
- {
- error (0, errno, "%s", input_filename);
- err = 1;
- continue;
- }
- }
- WINDOWS_SETFILEMODE_BINARY (in_stream, input_filename);
-
- if (n_skip == 0)
- break;
-
- /* First try using fseek. 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 use fseek:
- - 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 and dirs. */
-
- if (fstat (fileno (in_stream), &file_stats))
- {
- error (0, errno, "%s", input_filename);
- err = 1;
- continue;
- }
-
- /* The st_size field is valid only for regular files and
- directories. FIXME: is the preceding true?
- 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) || S_ISDIR (file_stats.st_mode))
- {
- if (n_skip >= file_stats.st_size)
- {
- n_skip -= file_stats.st_size;
- if (in_stream != stdin && fclose (in_stream) == EOF)
- {
- error (0, errno, "%s", input_filename);
- err = 1;
- }
- continue;
- }
- else
- {
- /* fseek may work on some streams for which lseek doesn't.
- But fseek's offset argument is restricted to the range
- of type `long'. So if N_SKIP is too large or if fseek
- fails, try lseek. */
- if ((n_skip <= LONG_MAX
- && fseek (in_stream, (long) n_skip, SEEK_SET) == 0)
- || lseek (fileno (in_stream), n_skip, SEEK_SET) >= 0)
- {
- n_skip = 0;
- break;
- }
- }
- }
-
- /* Seek didn't work or wasn't attempted; position the file pointer
- by reading. */
-
- for (j = n_skip / BUFSIZ; j >= 0; j--)
- {
- char buf[BUFSIZ];
- size_t n_bytes_to_read = (j > 0
- ? BUFSIZ
- : n_skip % BUFSIZ);
- size_t n_bytes_read;
- 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)
- break;
- }
-
- if (n_skip == 0)
- break;
- }
-
- if (n_skip != 0)
- error (EXIT_FAILURE, 0, _("cannot skip past end of combined input"));
-
- return err;
- }
-
- static const char *
- format_address_none (long unsigned int address)
- {
- return "";
- }
-
- static const char *
- format_address_std (long unsigned int address)
- {
- const char *address_string;
-
- sprintf (address_fmt_buffer, output_address_fmt_string, address);
- address_string = address_fmt_buffer;
- return address_string;
- }
-
- static const char *
- format_address_label (long unsigned int address)
- {
- const char *address_string;
- assert (output_address_fmt_string != NULL);
-
- sprintf (address_fmt_buffer, output_address_fmt_string,
- address, address + pseudo_offset);
- address_string = address_fmt_buffer;
- return address_string;
- }
-
- /* 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 (long unsigned int current_offset, long unsigned int n_bytes,
- const char *prev_block, const char *curr_block)
- {
- static int first = 1;
- static int prev_pair_equal = 0;
-
- #define EQUAL_BLOCKS(b1, b2) (memcmp ((b1), (b2), bytes_per_block) == 0)
-
- if (abbreviate_duplicate_blocks
- && !first && n_bytes == bytes_per_block
- && EQUAL_BLOCKS (prev_block, curr_block))
- {
- 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
- {
- printf ("*\n");
- prev_pair_equal = 1;
- }
- }
- else
- {
- unsigned int i;
-
- prev_pair_equal = 0;
- for (i = 0; i < n_specs; i++)
- {
- printf ("%s ", (i == 0
- ? format_address (current_offset)
- : address_pad));
- (*spec[i].print_function) (n_bytes, curr_block, spec[i].fmt_string);
- }
- }
- first = 0;
- }
-
- /* 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. */
-
- static int
- check_and_close (void)
- {
- int err;
-
- err = 0;
- if (ferror (in_stream))
- {
- error (0, errno, "%s", input_filename);
- if (in_stream != stdin)
- fclose (in_stream);
- err = 1;
- }
- else if (in_stream != stdin && fclose (in_stream) == EOF)
- {
- error (0, errno, "%s", input_filename);
- err = 1;
- }
-
- if (ferror (stdout))
- {
- error (0, errno, _("standard output"));
- err = 1;
- }
-
- return err;
- }
-
- /* 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 *FILE_LIST. If IN_STREAM is
- at end-of-file, close it and update the global variables IN_STREAM,
- FILE_LIST, 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 *FILE_LIST is NULL. When EOF is reached
- for the last file in FILE_LIST, 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;
-
- if (*file_list == NULL)
- {
- *c = EOF;
- return 0;
- }
-
- err = 0;
- while (1)
- {
- *c = fgetc (in_stream);
-
- if (*c != EOF)
- return err;
-
- err |= check_and_close ();
-
- do
- {
- ++file_list;
- if (*file_list == NULL)
- return err;
-
- if (STREQ (*file_list, "-"))
- {
- input_filename = _("standard input");
- in_stream = stdin;
- have_read_stdin = 1;
- }
- else
- {
- input_filename = *file_list;
- in_stream = fopen (input_filename, "r");
- if (in_stream == NULL)
- {
- error (0, errno, "%s", input_filename);
- err = 1;
- }
- }
- WINDOWS_SETFILEMODE_BINARY (in_stream, input_filename);
- }
- while (in_stream == NULL);
- }
- }
-
- /* 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 *FILE_LIST. On subsequent
- calls, if *FILE_LIST is NULL, don't modify BLOCK and return zero.
- If all N bytes cannot be read from IN_STREAM, close IN_STREAM and
- update the global variables IN_STREAM, FILE_LIST, and INPUT_FILENAME.
- Then try to read the remaining bytes from the newly opened file.
- Repeat if necessary until *FILE_LIST is NULL. 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;
-
- assert (n > 0 && n <= bytes_per_block);
-
- *n_bytes_in_buffer = 0;
-
- if (n == 0)
- return 0;
-
- if (*file_list == NULL)
- return 0; /* EOF. */
-
- err = 0;
- while (1)
- {
- 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)
- return err;
-
- err |= check_and_close ();
-
- do
- {
- ++file_list;
- if (*file_list == NULL)
- return err;
-
- if (STREQ (*file_list, "-"))
- {
- input_filename = _("standard input");
- in_stream = stdin;
- have_read_stdin = 1;
- }
- else
- {
- input_filename = *file_list;
- in_stream = fopen (input_filename, "r");
- if (in_stream == NULL)
- {
- error (0, errno, "%s", input_filename);
- err = 1;
- }
- }
- WINDOWS_SETFILEMODE_BINARY (in_stream, input_filename);
- }
- while (in_stream == NULL);
- }
- }
-
- /* Return the least common multiple of the sizes associated
- with the format specs. */
-
- static int
- get_lcm (void)
- {
- unsigned int 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 pre-POSIX offset specification with an optional leading '+'
- return the offset it denotes. Otherwise, return -1. */
-
- off_t
- parse_old_offset (const char *s)
- {
- int radix;
- off_t offset;
- enum strtol_error s_err;
- long unsigned int tmp;
-
- if (*s == '\0')
- return -1;
-
- /* 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;
- }
-
- s_err = xstrtoul (s, NULL, radix, &tmp, "Bb");
- if (s_err != LONGINT_OK)
- {
- STRTOL_FAIL_WARN (s, _("old-style offset"), s_err);
- return -1;
- }
- offset = tmp;
- return offset;
- }
-
- /* 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];
- off_t current_offset;
- off_t end_offset;
- int idx;
- int err;
- size_t n_bytes_read;
-
- #ifdef lint /* Suppress `used before initialized' warning. */
- end_offset = 0;
- #endif
-
- block[0] = (char *) alloca (bytes_per_block);
- block[1] = (char *) alloca (bytes_per_block);
-
- current_offset = n_bytes_to_skip;
-
- idx = 0;
- err = 0;
- if (limit_bytes_to_format)
- {
- end_offset = n_bytes_to_skip + max_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,
- (off_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 * (int) ((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;
- }
-
- if (output_address_fmt_string != NULL)
- printf ("%s\n", format_address (current_offset));
-
- if (limit_bytes_to_format && current_offset > end_offset)
- err |= check_and_close ();
-
- 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
- pre-POSIX 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);
- off_t address = n_bytes_to_skip;
- int err;
-
- err = 0;
- while (1)
- {
- unsigned int i;
- int c;
-
- /* See if the next `string_min' chars are all printing chars. */
- tryline:
-
- if (limit_bytes_to_format
- && address >= (n_bytes_to_skip + max_bytes_to_format - string_min))
- 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 < n_bytes_to_skip + max_bytes_to_format)
- {
- if (i == bufsize)
- {
- bufsize = 1 + 3 * bufsize / 2;
- buf = xrealloc (buf, bufsize);
- }
- 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;
- if (output_address_fmt_string != NULL)
- {
- printf ("%s ", 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 reachine EOF. */
-
- free (buf);
-
- err |= check_and_close ();
- return err;
- }
-
- int
- main (int argc, char **argv)
- {
- int c;
- int n_files;
- unsigned int i;
- unsigned int l_c_m;
- unsigned int address_pad_len;
- unsigned long int desired_width;
- 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. */
- long int pseudo_start;
-
- #ifdef lint /* Suppress `used before initialized' warning. */
- pseudo_start = 0;
- #endif
-
- program_name = argv[0];
- setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
-
- err = 0;
-
- for (i = 0; i <= MAX_INTEGRAL_TYPE_SIZE; i++)
- integral_type_size[i] = NO_SIZE;
-
- integral_type_size[sizeof (char)] = CHAR;
- integral_type_size[sizeof (short int)] = SHORT;
- integral_type_size[sizeof (int)] = INT;
- integral_type_size[sizeof (long int)] = LONG;
-
- for (i = 0; i <= MAX_FP_TYPE_SIZE; i++)
- fp_type_size[i] = NO_SIZE;
-
- fp_type_size[sizeof (float)] = FLOAT_SINGLE;
- /* The array entry for `double' is filled in after that for LONG_DOUBLE
- 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 (LONG_DOUBLE)] = FLOAT_LONG_DOUBLE;
- fp_type_size[sizeof (double)] = FLOAT_DOUBLE;
-
- n_specs = 0;
- n_specs_allocated = 5;
- spec = (struct tspec *) xmalloc (n_specs_allocated * sizeof (struct tspec));
-
- output_address_fmt_string = "%07o";
- format_address = format_address_std;
- address_pad_len = 7;
- flag_dump_strings = 0;
-
- while ((c = getopt_long (argc, argv, "abcdfhilos::xw::A:j:N:t:v",
- long_options, (int *) 0))
- != EOF)
- {
- unsigned long int tmp;
- enum strtol_error s_err;
-
- switch (c)
- {
- case 0:
- break;
-
- case 'A':
- switch (optarg[0])
- {
- case 'd':
- output_address_fmt_string = "%07d";
- format_address = format_address_std;
- address_pad_len = 7;
- break;
- case 'o':
- output_address_fmt_string = "%07o";
- format_address = format_address_std;
- address_pad_len = 7;
- break;
- case 'x':
- output_address_fmt_string = "%06x";
- format_address = format_address_std;
- address_pad_len = 6;
- break;
- case 'n':
- output_address_fmt_string = NULL;
- format_address = format_address_none;
- address_pad_len = 0;
- break;
- default:
- error (EXIT_FAILURE, 0,
- _("invalid output address radix `%c'; \
- it must be one character from [doxn]"),
- optarg[0]);
- break;
- }
- break;
-
- case 'j':
- s_err = xstrtoul (optarg, NULL, 0, &tmp, "bkm");
- n_bytes_to_skip = tmp;
- if (s_err != LONGINT_OK)
- STRTOL_FATAL_ERROR (optarg, _("skip argument"), s_err);
- break;
-
- case 'N':
- limit_bytes_to_format = 1;
-
- /* FIXME: if off_t is long long and that's an 8-byte type,
- use xstrtouq here. */
- s_err = xstrtoul (optarg, NULL, 0, &tmp, "bkm");
- max_bytes_to_format = tmp;
- if (s_err != LONGINT_OK)
- STRTOL_FATAL_ERROR (optarg, _("limit argument"), s_err);
-
- if (tmp > OFF_T_MAX)
- error (EXIT_FAILURE, 0,
- _("specified number of bytes `%s' is larger than \
- the maximum\nrepresentable value of type off_t"), optarg);
- break;
-
- case 's':
- if (optarg == NULL)
- string_min = 3;
- else
- {
- s_err = xstrtoul (optarg, NULL, 0, &string_min, "bkm");
- if (s_err != LONGINT_OK)
- STRTOL_FATAL_ERROR (optarg, _("minimum string length"), s_err);
- }
- ++flag_dump_strings;
- break;
-
- case 't':
- if (decode_format_string (optarg))
- ++n_failed_decodes;
- break;
-
- case 'v':
- abbreviate_duplicate_blocks = 0;
- break;
-
- case 'B':
- traditional = 1;
- break;
-
- /* The next several cases map the old, pre-POSIX format
- specification options to the corresponding POSIX 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");
-
- #undef CASE_OLD_ARG
-
- case 'w':
- width_specified = 1;
- if (optarg == NULL)
- {
- desired_width = 32;
- }
- else
- {
- s_err = xstrtoul (optarg, NULL, 10, &desired_width, NULL);
- if (s_err != LONGINT_OK)
- STRTOL_FATAL_ERROR (optarg, _("width specification"), s_err);
- }
- break;
-
- default:
- usage (1);
- break;
- }
- }
-
- if (n_failed_decodes > 0)
- exit (EXIT_FAILURE);
-
- if (show_version)
- {
- printf ("od - %s\n", PACKAGE_VERSION);
- exit (EXIT_SUCCESS);
- }
-
- if (show_help)
- usage (0);
-
- if (flag_dump_strings && n_specs > 0)
- error (EXIT_FAILURE, 0,
- _("no type may be specified when dumping strings"));
-
- n_files = argc - optind;
-
- /* If the --backward-compatible 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. */
-
- if (traditional)
- {
- off_t offset;
-
- if (n_files == 1)
- {
- if ((offset = parse_old_offset (argv[optind])) >= 0)
- {
- n_bytes_to_skip = offset;
- --n_files;
- ++argv;
- }
- }
- else if (n_files == 2)
- {
- off_t o1, o2;
- if ((o1 = parse_old_offset (argv[optind])) >= 0
- && (o2 = parse_old_offset (argv[optind + 1])) >= 0)
- {
- n_bytes_to_skip = o1;
- flag_pseudo_start = 1;
- pseudo_start = o2;
- argv += 2;
- n_files -= 2;
- }
- else if ((o2 = parse_old_offset (argv[optind + 1])) >= 0)
- {
- n_bytes_to_skip = o2;
- --n_files;
- argv[optind + 1] = argv[optind];
- ++argv;
- }
- else
- {
- error (0, 0,
- _("invalid second operand in compatibility mode `%s'"),
- argv[optind + 1]);
- usage (1);
- }
- }
- else if (n_files == 3)
- {
- off_t o1, o2;
- if ((o1 = parse_old_offset (argv[optind + 1])) >= 0
- && (o2 = parse_old_offset (argv[optind + 2])) >= 0)
- {
- n_bytes_to_skip = o1;
- flag_pseudo_start = 1;
- pseudo_start = o2;
- argv[optind + 2] = argv[optind];
- argv += 2;
- n_files -= 2;
- }
- else
- {
- error (0, 0,
- _("in compatibility mode the last 2 arguments must be offsets"));
- usage (1);
- }
- }
- else
- {
- error (0, 0,
- _("in compatibility mode there may be no more than 3 arguments"));
- usage (1);
- }
-
- if (flag_pseudo_start)
- {
- static char buf[10];
-
- if (output_address_fmt_string == NULL)
- {
- output_address_fmt_string = "(%07o)";
- format_address = format_address_std;
- }
- else
- {
- sprintf (buf, "%s (%s)",
- output_address_fmt_string,
- output_address_fmt_string);
- output_address_fmt_string = buf;
- format_address = format_address_label;
- }
- }
- }
-
- assert (address_pad_len <= MAX_ADDRESS_LENGTH);
- for (i = 0; i < address_pad_len; i++)
- address_pad[i] = ' ';
- address_pad[address_pad_len] = '\0';
-
- if (n_specs == 0)
- {
- if (decode_one_format ("o2", "o2", NULL, &(spec[0])))
- {
- /* This happens on Cray systems that don't have a 2-byte
- integral type. */
- exit (EXIT_FAILURE);
- }
-
- n_specs = 1;
- }
-
- if (n_files > 0)
- file_list = (char const *const *) &argv[optind];
- else
- {
- /* If no files were listed on the command line, set up the
- global array FILE_LIST so that it contains the null-terminated
- list of one name: "-". */
- static char const *const default_file_list[] = {"-", NULL};
-
- file_list = default_file_list;
- }
-
- 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
- {
- error (0, 0, _("warning: invalid width %lu; using %d instead"),
- 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 * (int) (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)
- error (EXIT_FAILURE, errno, _("standard input"));
-
- if (fclose (stdout) == EOF)
- error (EXIT_FAILURE, errno, _("write error"));
-
- exit (err == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
- }
-