/*
* strings implementation for busybox
*
- * Copyright Tito Ragusa <farmatito@tiscali.it>
+ * Copyright 2003 Tito Ragusa <farmatito@tiscali.it>
*
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-#include <getopt.h>
+//usage:#define strings_trivial_usage
+//usage: "[-afo] [-n LEN] [FILE]..."
+//usage:#define strings_full_usage "\n\n"
+//usage: "Display printable strings in a binary file\n"
+//usage: "\n -a Scan whole file (default)"
+//usage: "\n -f Precede strings with filenames"
+//usage: "\n -n LEN At least LEN characters form a string (default 4)"
+//usage: "\n -o Precede strings with decimal offsets"
#include "libbb.h"
-#define WHOLE_FILE 1
-#define PRINT_NAME 2
-#define PRINT_OFFSET 4
-#define SIZE 8
+#define WHOLE_FILE 1
+#define PRINT_NAME 2
+#define PRINT_OFFSET 4
+#define SIZE 8
-int strings_main(int argc, char **argv);
-int strings_main(int argc, char **argv)
+int strings_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int strings_main(int argc UNUSED_PARAM, char **argv)
{
- int n, c, i = 0, status = EXIT_SUCCESS;
- unsigned opt;
- unsigned long count;
- FILE *file = stdin;
+ int n, c, status = EXIT_SUCCESS;
+ unsigned count;
+ off_t offset;
+ FILE *file;
char *string;
const char *fmt = "%s: ";
const char *n_arg = "4";
- opt = getopt32(argc, argv, "afon:", &n_arg);
+ getopt32(argv, "afon:", &n_arg);
/* -a is our default behaviour */
-
- argc -= optind;
+ /*argc -= optind;*/
argv += optind;
- n = xatoul_range(n_arg, 1, INT_MAX);
+ n = xatou_range(n_arg, 1, INT_MAX);
string = xzalloc(n + 1);
n--;
- if (argc == 0) {
+ if (!*argv) {
fmt = "{%s}: ";
- *argv = (char *)bb_msg_standard_input;
- goto PIPE;
+ *--argv = (char *)bb_msg_standard_input;
}
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) {
+ file = fopen_or_warn_stdin(*argv);
+ if (!file) {
+ status = EXIT_FAILURE;
+ continue;
+ }
+ offset = 0;
+ count = 0;
+ do {
+ c = fgetc(file);
+ if (isprint_asciionly(c) || c == '\t') {
+ if (count > n) {
+ bb_putchar(c);
+ } else {
+ string[count] = c;
+ if (count == n) {
+ if (option_mask32 & PRINT_NAME) {
printf(fmt, *argv);
}
- if (opt & PRINT_OFFSET) {
- printf("%7lo ", count - n);
+ if (option_mask32 & PRINT_OFFSET) {
+ printf("%7"OFF_FMT"o ", offset - n);
}
- printf("%s", string);
+ fputs(string, stdout);
}
- i++;
- } else {
- if (i > n) {
- putchar('\n');
- }
- i = 0;
+ count++;
}
- count++;
- } while (c != EOF);
- fclose_if_not_stdin(file);
- } else {
- status = EXIT_FAILURE;
- }
- } while (--argc > 0);
+ } 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);