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[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * strings implementation for busybox
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| 4 | *
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[1765] | 5 | * Copyright Tito Ragusa <farmatito@tiscali.it>
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[821] | 6 | *
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| 7 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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| 8 | */
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| 9 |
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| 10 | #include <getopt.h>
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| 11 |
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[1765] | 12 | #include "libbb.h"
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| 13 |
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[821] | 14 | #define WHOLE_FILE 1
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| 15 | #define PRINT_NAME 2
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| 16 | #define PRINT_OFFSET 4
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| 17 | #define SIZE 8
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| 18 |
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[1765] | 19 | int strings_main(int argc, char **argv);
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[821] | 20 | int strings_main(int argc, char **argv)
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| 21 | {
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[1765] | 22 | int n, c, status = EXIT_SUCCESS;
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| 23 | unsigned opt;
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| 24 | unsigned count;
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| 25 | off_t offset;
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[821] | 26 | FILE *file = stdin;
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| 27 | char *string;
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| 28 | const char *fmt = "%s: ";
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[1765] | 29 | const char *n_arg = "4";
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[821] | 30 |
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[1765] | 31 | opt = getopt32(argv, "afon:", &n_arg);
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[821] | 32 | /* -a is our default behaviour */
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[1765] | 33 | /*argc -= optind;*/
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[821] | 34 | argv += optind;
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| 35 |
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[1765] | 36 | n = xatou_range(n_arg, 1, INT_MAX);
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[821] | 37 | string = xzalloc(n + 1);
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| 38 | n--;
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| 39 |
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[1765] | 40 | if (!*argv) {
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[821] | 41 | fmt = "{%s}: ";
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[1765] | 42 | *--argv = (char *)bb_msg_standard_input;
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[821] | 43 | goto PIPE;
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| 44 | }
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| 45 |
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| 46 | do {
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[1765] | 47 | file = fopen_or_warn(*argv, "r");
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| 48 | if (!file) {
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| 49 | status = EXIT_FAILURE;
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| 50 | continue;
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| 51 | }
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| 52 | PIPE:
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| 53 | offset = 0;
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| 54 | count = 0;
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| 55 | do {
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| 56 | c = fgetc(file);
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| 57 | if (isprint(c) || c == '\t') {
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| 58 | if (count > n) {
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| 59 | putchar(c);
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| 60 | } else {
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| 61 | string[count] = c;
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| 62 | if (count == n) {
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[821] | 63 | if (opt & PRINT_NAME) {
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| 64 | printf(fmt, *argv);
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| 65 | }
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| 66 | if (opt & PRINT_OFFSET) {
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[1765] | 67 | printf("%7"OFF_FMT"o ", offset - n);
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[821] | 68 | }
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[1765] | 69 | fputs(string, stdout);
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[821] | 70 | }
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[1765] | 71 | count++;
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[821] | 72 | }
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[1765] | 73 | } else {
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| 74 | if (count > n) {
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| 75 | putchar('\n');
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| 76 | }
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| 77 | count = 0;
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| 78 | }
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| 79 | offset++;
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| 80 | } while (c != EOF);
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| 81 | fclose_if_not_stdin(file);
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| 82 | } while (*++argv);
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[821] | 83 |
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| 84 | if (ENABLE_FEATURE_CLEAN_UP)
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| 85 | free(string);
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| 86 |
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[1765] | 87 | fflush_stdout_and_exit(status);
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[821] | 88 | }
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