busybox/miscutils/strings.c
Denis Vlasenko 62a90cdd74 *: shrink by using [f]open_or_warn_stdin where appropriate
function                                             old     new   delta
lsattr_main                                           62     143     +81
open_or_warn_stdin                                     -      36     +36
fclose_if_not_stdin                                   20      47     +27
xfopen_stdin                                           -      20     +20
tac_main                                             336     356     +20
cksum_main                                           249     259     +10
bb_argv_dash                                           -       8      +8
su_main                                              448     455      +7
cmp_main                                             630     633      +3
passwd_main                                         1072    1074      +2
uudecode_main                                        317     315      -2
text_yank                                            110     108      -2
handle_incoming_and_exit                            2653    2651      -2
flags                                                  5       1      -4
write_leases                                         235     230      -5
fopen_or_warn_stdin                                   48      42      -6
fold_main                                            648     642      -6
static.argv_dash                                       8       -      -8
sum_main                                             142     128     -14
tail_main                                           1237    1221     -16
sed_main                                             711     695     -16
cmp_xfopen_input                                      17       -     -17
bb_cat                                               113      96     -17
catv_main                                            328     306     -22
strings_main                                         457     434     -23
hash_file                                            298     274     -24
sum_file                                             353     325     -28
sort_main                                            904     859     -45
expand_main                                          736     686     -50
cut_main                                            1116    1065     -51
md5_sha1_sum_main                                    549     493     -56
lsattr_args                                           90       -     -90
read_stduu                                           408     255    -153
------------------------------------------------------------------------------
(add/remove: 3/3 grow/shrink: 7/20 up/down: 214/-657)        Total: -443 bytes
   text    data     bss     dec     hex filename
 797417     658    7428  805503   c4a7f busybox_old
 796973     658    7428  805059   c48c3 busybox_unstripped
2008-03-17 09:07:36 +00:00

87 lines
1.6 KiB
C

/* vi: set sw=4 ts=4: */
/*
* strings implementation for busybox
*
* Copyright Tito Ragusa <farmatito@tiscali.it>
*
* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
#include <getopt.h>
#include "libbb.h"
#define WHOLE_FILE 1
#define PRINT_NAME 2
#define PRINT_OFFSET 4
#define SIZE 8
int strings_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int strings_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
int n, c, status = EXIT_SUCCESS;
unsigned opt;
unsigned count;
off_t offset;
FILE *file;
char *string;
const char *fmt = "%s: ";
const char *n_arg = "4";
opt = getopt32(argv, "afon:", &n_arg);
/* -a is our default behaviour */
/*argc -= optind;*/
argv += optind;
n = xatou_range(n_arg, 1, INT_MAX);
string = xzalloc(n + 1);
n--;
if (!*argv) {
fmt = "{%s}: ";
*--argv = (char *)bb_msg_standard_input;
}
do {
file = fopen_or_warn_stdin(*argv);
if (!file) {
status = EXIT_FAILURE;
continue;
}
offset = 0;
count = 0;
do {
c = fgetc(file);
if (isprint(c) || c == '\t') {
if (count > n) {
bb_putchar(c);
} else {
string[count] = c;
if (count == n) {
if (opt & PRINT_NAME) {
printf(fmt, *argv);
}
if (opt & PRINT_OFFSET) {
printf("%7"OFF_FMT"o ", offset - n);
}
fputs(string, stdout);
}
count++;
}
} else {
if (count > n) {
bb_putchar('\n');
}
count = 0;
}
offset++;
} while (c != EOF);
fclose_if_not_stdin(file);
} while (*++argv);
if (ENABLE_FEATURE_CLEAN_UP)
free(string);
fflush_stdout_and_exit(status);
}