mirror of
https://git.busybox.net/busybox.git
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127 lines
3.5 KiB
C
127 lines
3.5 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 (c) 1980, 1987
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* The Regents of the University of California. All rights reserved.
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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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* Original copyright notice is retained at the end of this file.
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*
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* Modified for BusyBox by Erik Andersen <andersen@codepoet.org>
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* Badly hacked by Tito Ragusa <farmatito@tiscali.it>
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*/
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#include "busybox.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include <ctype.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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{
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int n, c, i = 0, status = EXIT_SUCCESS;
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unsigned long opt;
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unsigned long count;
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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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char *n_arg = "4";
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opt = bb_getopt_ulflags(argc, 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 = bb_xgetlarg(n_arg, 10, 1, INT_MAX);
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string = xzalloc(n + 1);
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n--;
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if (argc == 0) {
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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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if ((file = bb_wfopen(*argv, "r"))) {
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PIPE:
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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 (i <= n) {
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string[i] = c;
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} else {
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putchar(c);
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}
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if (i == 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("%7lo ", count - n);
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}
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printf("%s", string);
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}
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i++;
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} else {
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if (i > n) {
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putchar('\n');
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}
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i = 0;
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}
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count++;
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} while (c != EOF);
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bb_fclose_nonstdin(file);
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} else {
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status = EXIT_FAILURE;
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}
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} while (--argc > 0);
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if (ENABLE_FEATURE_CLEAN_UP)
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free(string);
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bb_fflush_stdout_and_exit(status);
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}
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/*
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* Copyright (c) 1980, 1987
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
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* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
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*
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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