/* strings -- print the strings of printable characters in files
- Copyright (C) 1993, 94 Free Software Foundation, Inc.
+ Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+ 2002 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
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
\f
/* Usage: strings [options] file...
-o Like -to. (Some other implementations have -o like -to,
others like -td. We chose one arbitrarily.)
+ --encoding={s,b,l,B,L}
+ -e {s,b,l,B,L}
+ Select character encoding: single-byte, bigendian 16-bit,
+ littleendian 16-bit, bigendian 32-bit, littleendian 32-bit
+
--target=BFDNAME
Specify a non-default object file format.
Written by Richard Stallman <rms@gnu.ai.mit.edu>
and David MacKenzie <djm@gnu.ai.mit.edu>. */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "bfd.h"
#include <stdio.h>
#include <getopt.h>
-#include <ctype.h>
#include <errno.h>
-#include "bfd.h"
#include "bucomm.h"
-
-#ifdef isascii
-#define isgraphic(c) (isascii (c) && isprint (c))
+#include "libiberty.h"
+#include "safe-ctype.h"
+
+/* Some platforms need to put stdin into binary mode, to read
+ binary files. */
+#ifdef HAVE_SETMODE
+#ifndef O_BINARY
+#ifdef _O_BINARY
+#define O_BINARY _O_BINARY
+#define setmode _setmode
#else
-#define isgraphic(c) (isprint (c))
+#define O_BINARY 0
+#endif
#endif
+#if O_BINARY
+#include <io.h>
+#define SET_BINARY(f) do { if (!isatty(f)) setmode(f,O_BINARY); } while (0)
+#endif
+#endif
+
+#define isgraphic(c) (ISPRINT (c) || (c) == '\t')
#ifndef errno
extern int errno;
#endif
/* The BFD section flags that identify an initialized data section. */
-#define DATA_FLAGS (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)
+#define DATA_FLAGS (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)
+
+#ifdef HAVE_FOPEN64
+typedef off64_t file_off;
+#define file_open(s,m) fopen64(s,m)
+#else
+typedef off_t file_off;
+#define file_open(s,m) fopen(s,m)
+#endif
/* Radix for printing addresses (must be 8, 10 or 16). */
static int address_radix;
/* The BFD object file format. */
static char *target;
-extern char *program_version;
+/* The character encoding format. */
+static char encoding;
+static int encoding_bytes;
static struct option long_options[] =
{
{"print-file-name", no_argument, NULL, 'f'},
{"bytes", required_argument, NULL, 'n'},
{"radix", required_argument, NULL, 't'},
+ {"encoding", required_argument, NULL, 'e'},
{"target", required_argument, NULL, 'T'},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{NULL, 0, NULL, 0}
};
+static void strings_a_section PARAMS ((bfd *, asection *, PTR));
+static boolean strings_object_file PARAMS ((const char *));
static boolean strings_file PARAMS ((char *file));
static int integer_arg PARAMS ((char *s));
-static void print_strings PARAMS ((char *filename, FILE *stream,
- file_ptr address, int stop_point,
+static void print_strings PARAMS ((const char *filename, FILE *stream,
+ file_off address, int stop_point,
int magiccount, char *magic));
static void usage PARAMS ((FILE *stream, int status));
+static long get_char PARAMS ((FILE *stream, file_off *address,
+ int *magiccount, char **magic));
\f
-void
+int main PARAMS ((int, char **));
+
+int
main (argc, argv)
int argc;
char **argv;
int exit_status = 0;
boolean files_given = false;
+#if defined (HAVE_SETLOCALE)
+ setlocale (LC_ALL, "");
+#endif
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
program_name = argv[0];
+ xmalloc_set_program_name (program_name);
string_min = -1;
print_addresses = false;
print_filenames = false;
datasection_only = true;
target = NULL;
+ encoding = 's';
- while ((optc = getopt_long (argc, argv, "afn:ot:v0123456789",
+ while ((optc = getopt_long (argc, argv, "afhHn:ot:e:Vv0123456789",
long_options, (int *) 0)) != EOF)
{
switch (optc)
print_filenames = true;
break;
+ case 'H':
case 'h':
usage (stdout, 0);
string_min = integer_arg (optarg);
if (string_min < 1)
{
- fprintf (stderr, "%s: invalid number %s\n",
- program_name, optarg);
- exit (1);
+ fatal (_("invalid number %s"), optarg);
}
break;
target = optarg;
break;
+ case 'e':
+ if (optarg[1] != '\0')
+ usage (stderr, 1);
+ encoding = optarg[0];
+ break;
+
+ case 'V':
case 'v':
- printf ("GNU %s version %s\n", program_name, program_version);
- exit (0);
+ print_version ("strings");
+ break;
case '?':
usage (stderr, 1);
default:
if (string_min < 0)
- string_min = optc;
+ string_min = optc - '0';
else
string_min = string_min * 10 + optc - '0';
break;
if (string_min < 0)
string_min = 4;
+ switch (encoding)
+ {
+ case 's':
+ encoding_bytes = 1;
+ break;
+ case 'b':
+ case 'l':
+ encoding_bytes = 2;
+ break;
+ case 'B':
+ case 'L':
+ encoding_bytes = 4;
+ break;
+ default:
+ usage (stderr, 1);
+ }
+
bfd_init ();
+ set_default_bfd_target ();
- for (; optind < argc; ++optind)
+ if (optind >= argc)
{
- if (!strcmp (argv[optind], "-"))
- datasection_only = false;
- else
+ datasection_only = false;
+#ifdef SET_BINARY
+ SET_BINARY (fileno (stdin));
+#endif
+ print_strings ("{standard input}", stdin, 0, 0, 0, (char *) NULL);
+ files_given = true;
+ }
+ else
+ {
+ for (; optind < argc; ++optind)
{
- files_given = true;
- exit_status |= (strings_file (argv[optind]) == false);
+ if (strcmp (argv[optind], "-") == 0)
+ datasection_only = false;
+ else
+ {
+ files_given = true;
+ exit_status |= (strings_file (argv[optind]) == false);
+ }
}
}
if (files_given == false)
usage (stderr, 1);
- exit (exit_status);
+ return (exit_status);
}
\f
/* Scan section SECT of the file ABFD, whose printable name is FILE.
set `got_a_section' and print the strings in it. */
static void
-strings_a_section (abfd, sect, file)
+strings_a_section (abfd, sect, filearg)
bfd *abfd;
asection *sect;
- PTR file;
+ PTR filearg;
{
+ const char *file = (const char *) filearg;
+
if ((sect->flags & DATA_FLAGS) == DATA_FLAGS)
{
bfd_size_type sz = bfd_get_section_size_before_reloc (sect);
static boolean
strings_object_file (file)
- char *file;
+ const char *file;
{
bfd *abfd = bfd_openr (file, target);
}
got_a_section = false;
- bfd_map_over_sections (abfd, strings_a_section, file);
+ bfd_map_over_sections (abfd, strings_a_section, (PTR) file);
if (!bfd_close (abfd))
{
{
FILE *stream;
- stream = fopen (file, "r");
+ stream = file_open (file, FOPEN_RB);
if (stream == NULL)
{
fprintf (stderr, "%s: ", program_name);
return false;
}
- print_strings (file, stream, (file_ptr) 0, 0, 0, (char *) 0);
+ print_strings (file, stream, (file_off) 0, 0, 0, (char *) 0);
if (fclose (stream) == EOF)
{
return true;
}
\f
+/* Read the next character, return EOF if none available.
+ Assume that STREAM is positioned so that the next byte read
+ is at address ADDRESS in the file.
+
+ If STREAM is NULL, do not read from it.
+ The caller can supply a buffer of characters
+ to be processed before the data in STREAM.
+ MAGIC is the address of the buffer and
+ MAGICCOUNT is how many characters are in it. */
+
+static long
+get_char (stream, address, magiccount, magic)
+ FILE *stream;
+ file_off *address;
+ int *magiccount;
+ char **magic;
+{
+ int c, i;
+ long r = EOF;
+ unsigned char buf[4];
+
+ for (i = 0; i < encoding_bytes; i++)
+ {
+ if (*magiccount)
+ {
+ (*magiccount)--;
+ c = *(*magic)++;
+ }
+ else
+ {
+ if (stream == NULL)
+ return EOF;
+#ifdef HAVE_GETC_UNLOCKED
+ c = getc_unlocked (stream);
+#else
+ c = getc (stream);
+#endif
+ if (c == EOF)
+ return EOF;
+ }
+
+ (*address)++;
+ buf[i] = c;
+ }
+
+ switch (encoding)
+ {
+ case 's':
+ r = buf[0];
+ break;
+ case 'b':
+ r = (buf[0] << 8) | buf[1];
+ break;
+ case 'l':
+ r = buf[0] | (buf[1] << 8);
+ break;
+ case 'B':
+ r = ((long) buf[0] << 24) | ((long) buf[1] << 16) |
+ ((long) buf[2] << 8) | buf[3];
+ break;
+ case 'L':
+ r = buf[0] | ((long) buf[1] << 8) | ((long) buf[2] << 16) |
+ ((long) buf[3] << 24);
+ break;
+ }
+
+ if (r == EOF)
+ return 0;
+
+ return r;
+}
+\f
/* Find the strings in file FILENAME, read from STREAM.
Assume that STREAM is positioned so that the next byte read
is at address ADDRESS in the file.
static void
print_strings (filename, stream, address, stop_point, magiccount, magic)
- char *filename;
+ const char *filename;
FILE *stream;
- file_ptr address;
+ file_off address;
int stop_point;
int magiccount;
char *magic;
{
- int bufsize = 100;
- char *buf = (char *) xmalloc (bufsize);
+ char *buf = (char *) xmalloc (sizeof (char) * (string_min + 1));
while (1)
{
+ file_off start;
int i;
- int c;
+ long c;
/* See if the next `string_min' chars are all graphic chars. */
tryline:
if (stop_point && address >= stop_point)
break;
+ start = address;
for (i = 0; i < string_min; i++)
{
- if (magiccount)
- {
- magiccount--;
- c = *magic++;
- }
- else
- {
- if (stream == NULL)
- return;
- c = getc (stream);
- if (c < 0)
- return;
- }
- address++;
- if (!isgraphic (c))
+ c = get_char (stream, &address, &magiccount, &magic);
+ if (c == EOF)
+ return;
+ if (c > 255 || c < 0 || !isgraphic (c))
/* Found a non-graphic. Try again starting with next char. */
goto tryline;
buf[i] = c;
}
- /* We found a run of `string_min' graphic characters.
- Now see if it is terminated with a NUL byte or a newline. */
- while (1)
- {
- if (i == bufsize)
- {
- bufsize *= 2;
- buf = (char *) xrealloc (buf, bufsize);
- }
- if (magiccount)
- {
- magiccount--;
- c = *magic++;
- }
- else
- {
- if (stream == NULL)
- return;
- c = getc (stream);
- if (c < 0)
- return;
- }
- address++;
- if (c == '\0' || c == '\n')
- break; /* It is; print this string. */
- if (!isgraphic (c))
- goto tryline; /* It isn't; give up on this string. */
- buf[i++] = c; /* The string continues; store it all. */
- }
+ /* We found a run of `string_min' graphic characters. Print up
+ to the next non-graphic character. */
- /* If we get here, the string is all graphics and properly terminated,
- so print it. It is all in `buf' and `i' is its length. */
- buf[i] = '\0';
if (print_filenames)
printf ("%s: ", filename);
if (print_addresses)
switch (address_radix)
{
case 8:
- printf ("%7lo ", (unsigned long) (address - i - 1));
+#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
+ if (sizeof (start) > sizeof (long))
+ printf ("%7Lo ", (unsigned long long) start);
+ else
+#else
+# if !BFD_HOST_64BIT_LONG
+ if (start != (unsigned long) start)
+ printf ("++%7lo ", (unsigned long) start);
+ else
+# endif
+#endif
+ printf ("%7lo ", (unsigned long) start);
break;
case 10:
- printf ("%7ld ", (long) (address - i - 1));
+#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
+ if (sizeof (start) > sizeof (long))
+ printf ("%7Ld ", (unsigned long long) start);
+ else
+#else
+# if !BFD_HOST_64BIT_LONG
+ if (start != (unsigned long) start)
+ printf ("++%7ld ", (unsigned long) start);
+ else
+# endif
+#endif
+ printf ("%7ld ", (long) start);
break;
case 16:
- printf ("%7lx ", (unsigned long) (address - i - 1));
+#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
+ if (sizeof (start) > sizeof (long))
+ printf ("%7Lx ", (unsigned long long) start);
+ else
+#else
+# if !BFD_HOST_64BIT_LONG
+ if (start != (unsigned long) start)
+ printf ("%lx%8.8lx ", start >> 32, start & 0xffffffff);
+ else
+# endif
+#endif
+ printf ("%7lx ", (unsigned long) start);
break;
}
- for (i = 0; (c = buf[i]) != '\0'; i++)
- switch (c)
- {
- case '\n':
- printf ("\\n");
- break;
- case '\t':
- printf ("\\t");
- break;
- case '\f':
- printf ("\\f");
- break;
- case '\b':
- printf ("\\b");
+ buf[i] = '\0';
+ fputs (buf, stdout);
+
+ while (1)
+ {
+ c = get_char (stream, &address, &magiccount, &magic);
+ if (c == EOF)
break;
- case '\r':
- printf ("\\r");
+ if (c > 255 || c < 0 || !isgraphic (c))
break;
- default:
- putchar (c);
- }
+ putchar (c);
+ }
+
putchar ('\n');
}
}
if (*p)
{
- fprintf (stderr, "%s: invalid integer argument %s\n", program_name, s);
- exit (1);
+ fatal (_("invalid integer argument %s"), s);
}
return value;
}
FILE *stream;
int status;
{
- fprintf (stream, "\
-Usage: %s [-afov] [-n min-len] [-min-len] [-t {o,x,d}] [-]\n\
- [--all] [--print-file-name] [--bytes=min-len] [--radix={o,x,d}]\n\
- [--target=bfdname] [--help] [--version] file...\n",
- program_name);
+ fprintf (stream, _("Usage: %s [option(s)] [file(s)]\n"), program_name);
+ fprintf (stream, _(" Display printable strings in [file(s)] (stdin by default)\n"));
+ fprintf (stream, _(" The options are:\n\
+ -a - --all Scan the entire file, not just the data section\n\
+ -f --print-file-name Print the name of the file before each string\n\
+ -n --bytes=[number] Locate & print any NUL-terminated sequence of at\n\
+ -<number> least [number] characters (default 4).\n\
+ -t --radix={o,x,d} Print the location of the string in base 8, 10 or 16\n\
+ -o An alias for --radix=o\n\
+ -T --target=<BFDNAME> Specify the binary file format\n\
+ -e --encoding={s,b,l,B,L} Select character size and endianness:\n\
+ s = 8-bit, {b,l} = 16-bit, {B,L} = 32-bit\n\
+ -h --help Display this information\n\
+ -v --version Print the program's version number\n"));
+ list_supported_targets (program_name, stream);
+ if (status == 0)
+ fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
exit (status);
}
projects / deliverable / binutils-gdb.git / blobdiff