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