/* od -- dump files in octal and other formats
- Copyright (C) 92, 1995-2000 Free Software Foundation, Inc.
+ Copyright (C) 92, 1995-2003 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
#include <getopt.h>
#include <sys/types.h>
#include "system.h"
-#include "closeout.h"
#include "error.h"
+#include "posixver.h"
#include "xstrtol.h"
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "od"
-#define AUTHORS "Jim Meyering"
+#define WRITTEN_BY _("Written by Jim Meyering.")
#if defined(__GNUC__) || defined(STDC_HEADERS)
# include <float.h>
typedef double LONG_DOUBLE;
#endif
-#if HAVE_VALUES_H
-# include <values.h>
-#endif
-
/* The default number of input bytes per output line. */
#define DEFAULT_BYTES_PER_BLOCK 16
# define LDBL_DIG DBL_DIG
#endif
+#if HAVE_UNSIGNED_LONG_LONG
+typedef unsigned long long ulonglong_t;
+#else
+/* This is just a place-holder to avoid a few `#if' directives.
+ In this case, the type isn't actually used. */
+typedef unsigned long int ulonglong_t;
+#endif
+
enum size_spec
{
NO_SIZE,
/* FIXME: add INTMAX support, too */
FLOAT_SINGLE,
FLOAT_DOUBLE,
- FLOAT_LONG_DOUBLE
+ FLOAT_LONG_DOUBLE,
+ N_SIZE_SPECS
};
enum output_format
CHARACTER
};
-/* Each output format specification (from POSIX `-t spec' or from
+/* 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) ();
+ void (*print_function) (size_t, const char *, const char *);
char *fmt_string;
int hexl_mode_trailer;
int field_width;
sizeof (short int),
sizeof (int),
sizeof (long int),
+ sizeof (ulonglong_t),
sizeof (float),
sizeof (double),
sizeof (LONG_DOUBLE)
};
+/* 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 *const charname[33] =
{
"sp"
};
-/* A printf control string for printing a file offset. */
-static const char *output_address_fmt_string;
+/* Address base (8, 10 or 16). */
+static int address_base;
-/* FIXME: make this the number of octal digits in an unsigned long. */
-#define MAX_ADDRESS_LENGTH 13
+/* 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)
-/* 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];
+/* Width of a normal address. */
+static int address_pad_len;
-static unsigned long int string_min;
-static unsigned long int flag_dump_strings;
+static size_t string_min;
+static int flag_dump_strings;
-/* Non-zero if we should recognize the pre-POSIX non-option arguments
+/* 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 long int flag_pseudo_start;
+static 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;
+static uintmax_t pseudo_offset;
-/* Function to format an address and optionally an additional parenthesized
- pseudo-address; it returns the formatted string. */
-static const char *(*format_address) PARAMS ((long unsigned int));
+/* 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 off_t n_bytes_to_skip = 0;
+static uintmax_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. */
+/* 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. This
- value is used only when LIMIT_BYTES_TO_FORMAT is nonzero. */
-static off_t max_bytes_to_format;
+/* 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
static struct tspec *spec;
/* The number of format specs. */
-static unsigned int n_specs;
+static size_t n_specs;
/* The allocated length of SPEC. */
-static unsigned int n_specs_allocated;
+static size_t 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;
+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.
- If no file-arguments were specified, this variable is initialized
- to { "-", NULL }. */
+/* 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;
-#ifdef HAVE_UNSIGNED_LONG_LONG
-# define LONGEST_INTEGRAL_TYPE unsigned long long
-#else
-# define LONGEST_INTEGRAL_TYPE long int
-#endif
-
-#define MAX_INTEGRAL_TYPE_SIZE sizeof(LONGEST_INTEGRAL_TYPE)
+#define MAX_INTEGRAL_TYPE_SIZE sizeof (ulonglong_t)
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];
+#define COMMON_SHORT_OPTIONS "A:N:abcdfhij:lot:vx"
+
+/* 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 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'},
+ {"traditional", no_argument, NULL, TRADITIONAL_OPTION},
{"width", optional_argument, NULL, 'w'},
{GETOPT_HELP_OPTION_DECL},
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\
+ fputs (_("\n\
+Write an unambiguous representation, octal bytes by default,\n\
+of FILE to standard output. With more than one FILE argument,\n\
+concatenate them in the listed order to form the input.\n\
+With no FILE, or when FILE is -, read standard input.\n\
\n\
+"), stdout);
+ fputs (_("\
+All arguments to long options are mandatory for short options.\n\
+"), stdout);
+ fputs (_("\
-A, --address-radix=RADIX decide how file offsets are printed\n\
- -j, --skip-bytes=BYTES skip BYTES input bytes first on each file\n\
- -N, --read-bytes=BYTES limit dump to BYTES input bytes per file\n\
+ -j, --skip-bytes=BYTES skip BYTES input bytes first\n\
+"), stdout);
+ fputs (_("\
+ -N, --read-bytes=BYTES limit dump to BYTES input bytes\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\
+ --traditional accept arguments in traditional form\n\
+"), stdout);
+ fputs (HELP_OPTION_DESCRIPTION, stdout);
+ fputs (VERSION_OPTION_DESCRIPTION, stdout);
+ fputs (_("\
\n\
-Pre-POSIX format specifications may be intermixed, they accumulate:\n\
+Traditional 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\
+"), stdout);
+ fputs (_("\
-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 (_("\
+"), stdout);
+ fputs (_("\
\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\
+hexadecimal, suffixes may be . for octal and b for 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\
+"), stdout);
+ fputs (_("\
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\
+"), stdout);
+ fputs (_("\
\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\
+"), stdout);
+ fputs (_("\
\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. Adding a z suffix to\n\
any type adds a display of printable characters to the end of each line\n\
-of output. -s without a number implies 3. -w without a number implies 32.\n\
-By default, od uses -A o -t d2 -w 16.\n\
-"));
- puts (_("\nReport bugs to <bug-textutils@gnu.org>."));
+of output. \
+"), stdout);
+ fputs (_("\
+--string without a number implies 3. --width without a number\n\
+implies 32. By default, od uses -A o -t d2 -w 16.\n\
+"), stdout);
+ printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
exit (status == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
}
static void
-print_s_char (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_s_char (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
+ size_t i;
for (i = n_bytes; i > 0; i--)
{
int tmp = (unsigned) *(const unsigned char *) block;
}
static void
-print_char (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_char (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
+ size_t i;
for (i = n_bytes; i > 0; i--)
{
unsigned int tmp = *(const unsigned char *) block;
}
static void
-print_s_short (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_s_short (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
+ size_t i;
for (i = n_bytes / sizeof (unsigned short); i > 0; i--)
{
int tmp = (unsigned) *(const unsigned short *) block;
}
static void
-print_short (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_short (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
+ size_t i;
for (i = n_bytes / sizeof (unsigned short); i > 0; i--)
{
unsigned int tmp = *(const unsigned short *) block;
}
static void
-print_int (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_int (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
+ size_t i;
for (i = n_bytes / sizeof (unsigned int); i > 0; i--)
{
unsigned int tmp = *(const unsigned int *) block;
}
static void
-print_long (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_long (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
+ size_t i;
for (i = n_bytes / sizeof (unsigned long); i > 0; i--)
{
unsigned long tmp = *(const unsigned long *) block;
}
}
-#ifdef HAVE_UNSIGNED_LONG_LONG
static void
-print_long_long (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_long_long (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
- for (i = n_bytes / sizeof (unsigned long long); i > 0; i--)
+ size_t i;
+ for (i = n_bytes / sizeof (ulonglong_t); i > 0; i--)
{
- unsigned long long tmp = *(const unsigned long long *) block;
+ ulonglong_t tmp = *(const ulonglong_t *) block;
printf (fmt_string, tmp);
- block += sizeof (unsigned long long);
+ block += sizeof (ulonglong_t);
}
}
-#endif
static void
-print_float (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_float (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
+ size_t i;
for (i = n_bytes / sizeof (float); i > 0; i--)
{
float tmp = *(const float *) block;
}
static void
-print_double (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_double (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
+ size_t i;
for (i = n_bytes / sizeof (double); i > 0; i--)
{
double tmp = *(const double *) block;
#ifdef HAVE_LONG_DOUBLE
static void
-print_long_double (long unsigned int n_bytes, const char *block,
- const char *fmt_string)
+print_long_double (size_t n_bytes, const char *block, const char *fmt_string)
{
- int i;
+ size_t i;
for (i = n_bytes / sizeof (LONG_DOUBLE); i > 0; i--)
{
LONG_DOUBLE tmp = *(const LONG_DOUBLE *) block;
#endif
static void
-dump_hexl_mode_trailer (long unsigned int n_bytes, const char *block)
+dump_hexl_mode_trailer (size_t n_bytes, const char *block)
{
- int i;
+ size_t i;
fputs (" >", stdout);
for (i = n_bytes; i > 0; i--)
{
}
static void
-print_named_ascii (long unsigned int n_bytes, const char *block,
- const char *unused_fmt_string)
+print_named_ascii (size_t n_bytes, const char *block,
+ const char *unused_fmt_string ATTRIBUTE_UNUSED)
{
- int i;
+ size_t i;
for (i = n_bytes; i > 0; i--)
{
unsigned int c = *(const unsigned char *) block;
}
static void
-print_ascii (long unsigned int n_bytes, const char *block,
- const char *unused_fmt_string)
+print_ascii (size_t n_bytes, const char *block,
+ const char *unused_fmt_string ATTRIBUTE_UNUSED)
{
- int i;
+ size_t i;
for (i = n_bytes; i > 0; i--)
{
unsigned int c = *(const unsigned char *) block;
return 0;
}
-/* If S points to a single valid POSIX-style od format string, put
+/* 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,
enum output_format fmt;
const char *pre_fmt_string;
char *fmt_string;
- void (*print_function) ();
+ void (*print_function) (size_t, const char *, const char *);
const char *p;
unsigned int c;
unsigned int field_width = 0;
size = sizeof (int);
else
{
- if (size > MAX_INTEGRAL_TYPE_SIZE
+ if (MAX_INTEGRAL_TYPE_SIZE < size
|| integral_type_size[size] == NO_SIZE)
{
error (0, 0, _("invalid type string `%s';\n\
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);
{
case 'd':
fmt = SIGNED_DECIMAL;
- sprintf (fmt_string, " %%%u%sd",
+ sprintf (fmt_string, " %%%u%s",
(field_width = bytes_to_signed_dec_digits[size]),
- (size_spec == LONG ? "l"
- : (size_spec == LONG_LONG ? "ll"
- : "")));
+ ISPEC_TO_FORMAT (size_spec, "d", "ld", PRIdMAX));
break;
case 'o':
fmt = OCTAL;
- sprintf (fmt_string, " %%0%u%so",
+ sprintf (fmt_string, " %%0%u%s",
(field_width = bytes_to_oct_digits[size]),
- (size_spec == LONG ? "l" : ""));
+ ISPEC_TO_FORMAT (size_spec, "o", "lo", PRIoMAX));
break;
case 'u':
fmt = UNSIGNED_DECIMAL;
- sprintf (fmt_string, " %%%u%su",
+ sprintf (fmt_string, " %%%u%s",
(field_width = bytes_to_unsigned_dec_digits[size]),
- (size_spec == LONG ? "l" : ""));
+ ISPEC_TO_FORMAT (size_spec, "u", "lu", PRIuMAX));
break;
case 'x':
fmt = HEXADECIMAL;
- sprintf (fmt_string, " %%0%u%sx",
+ sprintf (fmt_string, " %%0%u%s",
(field_width = bytes_to_hex_digits[size]),
- (size_spec == LONG ? "l" : ""));
+ ISPEC_TO_FORMAT (size_spec, "x", "lx", PRIxMAX));
break;
default:
return 0;
}
-/* Decode the POSIX-style od format string S. Append the decoded
+/* 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 (STREQ (input_filename, "-"))
+ {
+ input_filename = _("standard input");
+ in_stream = stdin;
+ have_read_stdin = 1;
+ }
+ else
+ {
+ in_stream = fopen (input_filename, "r");
+ if (in_stream == NULL)
+ {
+ error (0, errno, "%s", input_filename);
+ err = 1;
+ }
+ }
+ }
+ while (in_stream == NULL);
+
+ if (limit_bytes_to_format && !flag_dump_strings)
+ SETVBUF (in_stream, NULL, _IONBF, 0);
+ SET_BINARY (fileno (in_stream));
+
+ 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))
+ {
+ error (0, in_errno, _("%s: read error"), 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;
+ }
+
+ in_stream = NULL;
+ }
+
+ if (ferror (stdout))
+ {
+ error (0, 0, _("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. */
if (n_specs >= n_specs_allocated)
{
n_specs_allocated = 1 + (3 * n_specs_allocated) / 2;
- spec = (struct tspec *) xrealloc ((char *) spec,
- (n_specs_allocated
- * sizeof (struct tspec)));
+ spec = xrealloc (spec, (n_specs_allocated * sizeof (struct tspec)));
}
memcpy ((char *) &spec[n_specs], (char *) &tspec,
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. */
+ nonzero. When possible, use seek rather than read operations to
+ advance IN_STREAM. */
static int
-skip (off_t n_skip)
+skip (uintmax_t n_skip)
{
- int err;
+ int err = 0;
+ int in_errno = 0;
- err = 0;
- for ( /* empty */ ; *file_list != NULL; ++file_list)
+ if (n_skip == 0)
+ return 0;
+
+ while (in_stream != NULL) /* EOF. */
{
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;
- }
- }
- SET_BINARY (fileno (in_stream));
-
- if (n_skip == 0)
- break;
/* First try seeking. For large offsets, this extra work is
worthwhile. If the offset is below some threshold it may be
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))
+ if (fstat (fileno (in_stream), &file_stats) == 0)
{
- error (0, errno, "%s", input_filename);
- err = 1;
- continue;
- }
+ /* 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. */
- /* 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))
- {
- if (n_skip >= file_stats.st_size)
+ if (S_ISREG (file_stats.st_mode) && 0 <= file_stats.st_size)
{
- n_skip -= file_stats.st_size;
- if (in_stream != stdin && fclose (in_stream) == EOF)
+ if ((uintmax_t) file_stats.st_size <= n_skip)
+ n_skip -= file_stats.st_size;
+ else
{
- error (0, errno, "%s", input_filename);
- err = 1;
+ if (fseeko (in_stream, n_skip, SEEK_CUR) != 0)
+ {
+ in_errno = errno;
+ err = 1;
+ }
+ n_skip = 0;
}
- continue;
}
+
+ /* If it's not a regular file with nonnegative size,
+ position the file pointer by reading. */
+
else
{
- if (0 <= lseek (fileno (in_stream), n_skip, SEEK_CUR))
+ char buf[BUFSIZ];
+ size_t n_bytes_read, n_bytes_to_read = BUFSIZ;
+
+ while (0 < n_skip)
{
- n_skip = 0;
- break;
+ 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;
+ }
}
}
- }
- /* Seek didn't work or wasn't attempted; position the file pointer
- by reading. */
+ if (n_skip == 0)
+ break;
+ }
- for (j = n_skip / BUFSIZ; j >= 0; j--)
+ else /* cannot fstat() file */
{
- 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;
+ error (0, errno, "%s", input_filename);
+ err = 1;
}
- if (n_skip == 0)
- break;
+ err |= check_and_close (in_errno);
+
+ err |= open_next_file ();
}
if (n_skip != 0)
return err;
}
-static const char *
-format_address_none (long unsigned int address)
+static void
+format_address_none (uintmax_t address ATTRIBUTE_UNUSED, char c ATTRIBUTE_UNUSED)
{
- return "";
}
-static const char *
-format_address_std (long unsigned int address)
+static void
+format_address_std (uintmax_t address, char c)
{
- const char *address_string;
+ char buf[MAX_ADDRESS_LENGTH + 2];
+ char *p = buf + sizeof buf;
+ char const *pbound;
+
+ *--p = '\0';
+ *--p = c;
+ pbound = p - address_pad_len;
+
+ /* Use a special case of the code for each base. This is measurably
+ faster than generic code. */
+ switch (address_base)
+ {
+ case 8:
+ do
+ *--p = '0' + (address & 7);
+ while ((address >>= 3) != 0);
+ break;
- sprintf (address_fmt_buffer, output_address_fmt_string, address);
- address_string = address_fmt_buffer;
- return address_string;
+ case 10:
+ do
+ *--p = '0' + (address % 10);
+ while ((address /= 10) != 0);
+ break;
+
+ case 16:
+ do
+ *--p = "0123456789abcdef"[address & 15];
+ while ((address >>= 4) != 0);
+ break;
+ }
+
+ while (pbound < p)
+ *--p = '0';
+
+ fputs (p, stdout);
}
-static const char *
-format_address_label (long unsigned int address)
+static void
+format_address_paren (uintmax_t address, char c)
{
- const char *address_string;
- assert (output_address_fmt_string != NULL);
+ putchar ('(');
+ format_address_std (address, ')');
+ putchar (c);
+}
- sprintf (address_fmt_buffer, output_address_fmt_string,
- address, address + pseudo_offset);
- address_string = address_fmt_buffer;
- return address_string;
+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
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,
+write_block (uintmax_t current_offset, size_t n_bytes,
const char *prev_block, const char *curr_block)
{
static int first = 1;
}
else
{
- unsigned int i;
+ size_t i;
prev_pair_equal = 0;
for (i = 0; i < n_specs; i++)
{
- const char *addr_or_pad = (i == 0
- ? format_address (current_offset)
- : address_pad);
-
- fputs (addr_or_pad, stdout);
+ 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)
{
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. */
+ 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;
+ int err = 0;
- if (*file_list == NULL)
- {
- *c = EOF;
- return 0;
- }
+ *c = EOF;
- err = 0;
- while (1)
+ while (in_stream != NULL) /* EOF. */
{
*c = fgetc (in_stream);
if (*c != EOF)
- return err;
+ break;
- err |= check_and_close ();
+ err |= check_and_close (errno);
- 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;
- }
- }
- SET_BINARY (fileno (in_stream));
- }
- while (in_stream == NULL);
+ 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 *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. */
+ 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;
+ int err = 0;
- assert (n > 0 && n <= bytes_per_block);
+ assert (0 < n && 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)
+ while (in_stream != NULL) /* EOF. */
{
size_t n_needed;
size_t n_read;
*n_bytes_in_buffer += n_read;
if (n_read == n_needed)
- return err;
+ break;
- err |= check_and_close ();
+ err |= check_and_close (errno);
- 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;
- }
- }
- SET_BINARY (fileno (in_stream));
- }
- while (in_stream == NULL);
+ err |= open_next_file ();
}
+
+ return err;
}
/* Return the least common multiple of the sizes associated
static int
get_lcm (void)
{
- unsigned int i;
+ size_t i;
int l_c_m = 1;
for (i = 0; i < n_specs; i++)
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. */
+/* If S is a valid traditional offset specification with an optional
+ leading '+' return nonzero and set *OFFSET to the offset it denotes. */
-off_t
-parse_old_offset (const char *s)
+static int
+parse_old_offset (const char *s, uintmax_t *offset)
{
int radix;
- off_t offset;
enum strtol_error s_err;
- long unsigned int tmp;
if (*s == '\0')
- return -1;
+ return 0;
/* Skip over any leading '+'. */
if (s[0] == '+')
radix = 8;
}
- s_err = xstrtoul (s, NULL, radix, &tmp, "Bb");
+ s_err = xstrtoumax (s, NULL, radix, offset, "Bb");
if (s_err != LONGINT_OK)
{
STRTOL_FAIL_WARN (s, _("old-style offset"), s_err);
- return -1;
+ return 0;
}
- offset = tmp;
- return offset;
+ return 1;
}
/* Read a chunk of size BYTES_PER_BLOCK from the input files, write the
dump (void)
{
char *block[2];
- off_t current_offset;
- off_t end_offset IF_LINT (= 0);
+ uintmax_t current_offset;
int idx;
int err;
size_t n_bytes_read;
- block[0] = (char *) alloca (bytes_per_block);
- block[1] = (char *) alloca (bytes_per_block);
+ block[0] = alloca (bytes_per_block);
+ block[1] = alloca (bytes_per_block);
current_offset = n_bytes_to_skip;
err = 0;
if (limit_bytes_to_format)
{
- end_offset = n_bytes_to_skip + max_bytes_to_format;
-
while (1)
{
size_t n_needed;
break;
}
n_needed = MIN (end_offset - current_offset,
- (off_t) bytes_per_block);
+ (uintmax_t) bytes_per_block);
err |= read_block (n_needed, block[idx], &n_bytes_read);
if (n_bytes_read < bytes_per_block)
break;
/* 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);
+ 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,
current_offset += n_bytes_read;
}
- if (output_address_fmt_string != NULL)
- printf ("%s\n", format_address (current_offset));
+ format_address (current_offset, '\n');
- if (limit_bytes_to_format && current_offset > end_offset)
- err |= check_and_close ();
+ if (limit_bytes_to_format && current_offset >= end_offset)
+ err |= check_and_close (0);
return err;
}
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
+ traditional version of od. Return nonzero if an error
occurs. Otherwise, return zero. */
static int
{
size_t bufsize = MAX (100, string_min);
char *buf = xmalloc (bufsize);
- off_t address = n_bytes_to_skip;
+ uintmax_t address = n_bytes_to_skip;
int err;
err = 0;
while (1)
{
- unsigned int i;
+ size_t 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 -
- (off_t) string_min))
+ && (end_offset < string_min || end_offset - string_min <= address))
break;
for (i = 0; i < string_min; i++)
/* 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)
+ while (!limit_bytes_to_format || address < end_offset)
{
if (i == bufsize)
{
/* 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));
- }
+ format_address (address - i - 1, ' ');
+
for (i = 0; (c = buf[i]); i++)
{
switch (c)
}
/* We reach this point only if we search through
- (max_bytes_to_format - string_min) bytes before reachine EOF. */
+ (max_bytes_to_format - string_min) bytes before reaching EOF. */
free (buf);
- err |= check_and_close ();
+ err |= check_and_close (0);
return err;
}
{
int c;
int n_files;
- unsigned int i;
- unsigned int l_c_m;
- unsigned int address_pad_len;
- unsigned long int desired_width;
+ size_t i;
+ int l_c_m;
+ size_t desired_width IF_LINT (= 0);
int width_specified = 0;
int n_failed_decodes = 0;
int err;
+ char const *short_options = (posix2_version () < 200112
+ ? COMMON_SHORT_OPTIONS "s::w::"
+ : COMMON_SHORT_OPTIONS "s:w:");
/* The old-style `pseudo starting address' to be printed in parentheses
after any true address. */
- long int pseudo_start IF_LINT (= 0);
+ uintmax_t pseudo_start IF_LINT (= 0);
+ initialize_main (&argc, &argv);
program_name = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
integral_type_size[sizeof (short int)] = SHORT;
integral_type_size[sizeof (int)] = INT;
integral_type_size[sizeof (long int)] = LONG;
-#ifdef HAVE_UNSIGNED_LONG_LONG
- integral_type_size[sizeof (long long)] = LONG_LONG;
+#if HAVE_UNSIGNED_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;
#endif
for (i = 0; i <= MAX_FP_TYPE_SIZE; i++)
n_specs = 0;
n_specs_allocated = 5;
- spec = (struct tspec *) xmalloc (n_specs_allocated * sizeof (struct tspec));
+ spec = xmalloc (n_specs_allocated * sizeof (struct tspec));
- output_address_fmt_string = "%07o";
format_address = format_address_std;
+ address_base = 8;
address_pad_len = 7;
flag_dump_strings = 0;
- while ((c = getopt_long (argc, argv, "abcdfhilos::xw::A:j:N:t:v",
- long_options, NULL)) != -1)
+ while ((c = getopt_long (argc, argv, short_options, long_options, NULL))
+ != -1)
{
- unsigned long int tmp;
+ uintmax_t tmp;
enum strtol_error s_err;
switch (c)
switch (optarg[0])
{
case 'd':
- output_address_fmt_string = "%07d";
format_address = format_address_std;
+ address_base = 10;
address_pad_len = 7;
break;
case 'o':
- output_address_fmt_string = "%07o";
format_address = format_address_std;
+ address_base = 8;
address_pad_len = 7;
break;
case 'x':
- output_address_fmt_string = "%06x";
format_address = format_address_std;
+ address_base = 16;
address_pad_len = 6;
break;
case 'n':
- output_address_fmt_string = NULL;
format_address = format_address_none;
address_pad_len = 0;
break;
break;
case 'j':
- s_err = xstrtoul (optarg, NULL, 0, &tmp, "bkm");
- n_bytes_to_skip = tmp;
+ s_err = xstrtoumax (optarg, NULL, 0, &n_bytes_to_skip, "bkm");
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;
+ s_err = xstrtoumax (optarg, NULL, 0, &max_bytes_to_format, "bkm");
if (s_err != LONGINT_OK)
STRTOL_FATAL_ERROR (optarg, _("limit argument"), s_err);
-
- if (tmp > LONG_MAX)
- error (EXIT_FAILURE, 0,
- _("specified number of bytes `%s' is larger than \
-the maximum\nrepresentable value of type `long'"), optarg);
break;
case 's':
string_min = 3;
else
{
- s_err = xstrtoul (optarg, NULL, 0, &string_min, "bkm");
+ s_err = xstrtoumax (optarg, NULL, 0, &tmp, "bkm");
if (s_err != LONGINT_OK)
STRTOL_FATAL_ERROR (optarg, _("minimum string length"), s_err);
+
+ /* The minimum string length may be no larger than SIZE_MAX,
+ since we may allocate a buffer of this size. */
+ if (SIZE_MAX < tmp)
+ error (EXIT_FAILURE, 0, _("%s is too large"), optarg);
+
+ string_min = tmp;
}
- ++flag_dump_strings;
+ flag_dump_strings = 1;
break;
case 't':
abbreviate_duplicate_blocks = 0;
break;
- case 'B':
+ case TRADITIONAL_OPTION:
traditional = 1;
break;
- /* The next several cases map the old, pre-POSIX format
- specification options to the corresponding POSIX format
+ /* 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. */
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':
}
else
{
- s_err = xstrtoul (optarg, NULL, 10, &desired_width, "");
+ uintmax_t w_tmp;
+ s_err = xstrtoumax (optarg, NULL, 10, &w_tmp, "");
if (s_err != LONGINT_OK)
STRTOL_FATAL_ERROR (optarg, _("width specification"), s_err);
+ if (SIZE_MAX < w_tmp)
+ error (EXIT_FAILURE, 0, _("%s is too large"), optarg);
+ desired_width = w_tmp;
}
break;
case_GETOPT_HELP_CHAR;
- case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+ case_GETOPT_VERSION_CHAR (PROGRAM_NAME, WRITTEN_BY);
default:
- usage (1);
+ usage (EXIT_FAILURE);
break;
}
}
n_files = argc - optind;
- /* If the --backward-compatible option is used, there may be from
+ /* 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. */
+ 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)
{
- off_t offset;
+ uintmax_t offset;
if (n_files == 1)
{
- if ((offset = parse_old_offset (argv[optind])) >= 0)
+ if (parse_old_offset (argv[optind], &offset))
{
n_bytes_to_skip = offset;
--n_files;
}
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)
+ 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;
argv += 2;
n_files -= 2;
}
- else if ((o2 = parse_old_offset (argv[optind + 1])) >= 0)
+ else if (parse_old_offset (argv[optind + 1], &o2))
{
n_bytes_to_skip = o2;
--n_files;
error (0, 0,
_("invalid second operand in compatibility mode `%s'"),
argv[optind + 1]);
- usage (1);
+ usage (EXIT_FAILURE);
}
}
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)
+ 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;
{
error (0, 0,
_("in compatibility mode, the last two arguments must be offsets"));
- usage (1);
+ usage (EXIT_FAILURE);
}
}
else if (n_files > 3)
{
error (0, 0,
_("compatibility mode supports at most three arguments"));
- usage (1);
+ usage (EXIT_FAILURE);
}
if (flag_pseudo_start)
{
- static char buf[10];
-
- if (output_address_fmt_string == NULL)
+ if (format_address == format_address_none)
{
- output_address_fmt_string = "(%07o)";
- format_address = format_address_std;
+ address_base = 8;
+ address_pad_len = 7;
+ format_address = format_address_paren;
}
else
- {
- sprintf (buf, "%s (%s)",
- output_address_fmt_string,
- output_address_fmt_string);
- output_address_fmt_string = buf;
- format_address = format_address_label;
- }
+ 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 (limit_bytes_to_format)
+ {
+ end_offset = n_bytes_to_skip + max_bytes_to_format;
+ if (end_offset < n_bytes_to_skip)
+ error (EXIT_FAILURE, 0, _("skip-bytes + read-bytes is too large"));
+ }
if (n_specs == 0)
{
}
if (n_files > 0)
- file_list = (char const *const *) &argv[optind];
+ {
+ /* 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
{
- /* 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};
+ /* 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;
else
{
error (0, 0, _("warning: invalid width %lu; using %d instead"),
- desired_width, l_c_m);
+ (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 * (int) (DEFAULT_BYTES_PER_BLOCK / l_c_m);
+ bytes_per_block = l_c_m * (DEFAULT_BYTES_PER_BLOCK / l_c_m);
else
bytes_per_block = l_c_m;
}
projects / platform / upstream / coreutils.git / blobdiff