| 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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| 5 | * Copyright (c) 1980, 1987
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| 6 | * The Regents of the University of California. All rights reserved.
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| 7 | *
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| 8 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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| 9 | *
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| 10 | * Original copyright notice is retained at the end of this file.
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| 11 | *
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| 12 | * Modified for BusyBox by Erik Andersen <andersen@codepoet.org>
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| 13 | * Badly hacked by Tito Ragusa <farmatito@tiscali.it>
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| 14 | */
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| 15 |
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| 16 | #include "busybox.h"
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| 17 | #include <stdio.h>
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| 18 | #include <stdlib.h>
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| 19 | #include <getopt.h>
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| 20 | #include <ctype.h>
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| 21 |
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| 22 | #define WHOLE_FILE 1
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| 23 | #define PRINT_NAME 2
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| 24 | #define PRINT_OFFSET 4
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| 25 | #define SIZE 8
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| 26 |
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| 27 | int strings_main(int argc, char **argv)
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| 28 | {
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| 29 | int n, c, i = 0, status = EXIT_SUCCESS;
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| 30 | unsigned long opt;
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| 31 | unsigned long count;
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| 32 | FILE *file = stdin;
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| 33 | char *string;
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| 34 | const char *fmt = "%s: ";
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| 35 | char *n_arg = "4";
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| 36 |
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| 37 | opt = bb_getopt_ulflags(argc, argv, "afon:", &n_arg);
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| 38 | /* -a is our default behaviour */
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| 39 |
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| 40 | argc -= optind;
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| 41 | argv += optind;
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| 42 |
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| 43 | n = bb_xgetlarg(n_arg, 10, 1, INT_MAX);
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| 44 | string = xzalloc(n + 1);
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| 45 | n--;
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| 46 |
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| 47 | if (argc == 0) {
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| 48 | fmt = "{%s}: ";
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| 49 | *argv = (char *)bb_msg_standard_input;
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| 50 | goto PIPE;
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| 51 | }
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| 52 |
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| 53 | do {
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| 54 | if ((file = bb_wfopen(*argv, "r"))) {
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| 55 | PIPE:
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| 56 | count = 0;
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| 57 | do {
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| 58 | c = fgetc(file);
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| 59 | if (isprint(c) || c == '\t') {
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| 60 | if (i <= n) {
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| 61 | string[i] = c;
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| 62 | } else {
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| 63 | putchar(c);
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| 64 | }
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| 65 | if (i == n) {
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| 66 | if (opt & PRINT_NAME) {
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| 67 | printf(fmt, *argv);
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| 68 | }
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| 69 | if (opt & PRINT_OFFSET) {
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| 70 | printf("%7lo ", count - n);
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| 71 | }
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| 72 | printf("%s", string);
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| 73 | }
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| 74 | i++;
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| 75 | } else {
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| 76 | if (i > n) {
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| 77 | putchar('\n');
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| 78 | }
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| 79 | i = 0;
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| 80 | }
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| 81 | count++;
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| 82 | } while (c != EOF);
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| 83 | bb_fclose_nonstdin(file);
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| 84 | } else {
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| 85 | status = EXIT_FAILURE;
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| 86 | }
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| 87 | } while (--argc > 0);
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| 88 |
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| 89 | if (ENABLE_FEATURE_CLEAN_UP)
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| 90 | free(string);
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| 91 |
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| 92 | bb_fflush_stdout_and_exit(status);
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| 93 | }
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| 94 |
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| 95 | /*
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| 96 | * Copyright (c) 1980, 1987
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| 97 | * The Regents of the University of California. All rights reserved.
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| 98 | *
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| 99 | * Redistribution and use in source and binary forms, with or without
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| 100 | * modification, are permitted provided that the following conditions
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| 101 | * are met:
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| 102 | * 1. Redistributions of source code must retain the above copyright
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| 103 | * notice, this list of conditions and the following disclaimer.
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| 104 | * 2. Redistributions in binary form must reproduce the above copyright
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| 105 | * notice, this list of conditions and the following disclaimer in the
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| 106 | * documentation and/or other materials provided with the distribution.
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| 107 | *
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| 108 | * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
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| 109 | * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
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| 110 | *
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| 111 | * 4. Neither the name of the University nor the names of its contributors
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| 112 | * may be used to endorse or promote products derived from this software
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| 113 | * without specific prior written permission.
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| 114 | *
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| 115 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 116 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 117 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 118 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 119 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 120 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 121 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 122 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 123 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 124 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 125 | * SUCH DAMAGE.
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| 126 | */
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