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/* 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 "busybox.h"
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <ctype.h>
#define WHOLE_FILE 1
#define PRINT_NAME 2
#define PRINT_OFFSET 4
#define SIZE 8
int strings_main(int argc, char **argv)
{
int n, c, i = 0, status = EXIT_SUCCESS;
unsigned opt;
unsigned long count;
FILE *file = stdin;
char *string;
const char *fmt = "%s: ";
const char *n_arg = "4";
opt = getopt32(argc, argv, "afon:", &n_arg);
/* -a is our default behaviour */
argc -= optind;
argv += optind;
n = xatoul_range(n_arg, 1, INT_MAX);
string = xzalloc(n + 1);
n--;
if (argc == 0) {
fmt = "{%s}: ";
*argv = (char *)bb_msg_standard_input;
goto PIPE;
}
do {
file = fopen_or_warn(*argv, "r");
if (file) {
PIPE:
count = 0;
do {
c = fgetc(file);
if (isprint(c) || c == '\t') {
if (i <= n) {
string[i] = c;
} else {
putchar(c);
}
if (i == n) {
if (opt & PRINT_NAME) {
printf(fmt, *argv);
}
if (opt & PRINT_OFFSET) {
printf("%7lo ", count - n);
}
printf("%s", string);
}
i++;
} else {
if (i > n) {
putchar('\n');
}
i = 0;
}
count++;
} while (c != EOF);
fclose_if_not_stdin(file);
} else {
status = EXIT_FAILURE;
}
} while (--argc > 0);
if (ENABLE_FEATURE_CLEAN_UP)
free(string);
fflush_stdout_and_exit(status);
}
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