ef5e8f8de
Eric Andersen
2002-11-07
Subject
Implement a small strings applet
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include/applets.h +3 -0include/usage.h +9 -0miscutils/Makefile.in +1 -0miscutils/config.in +1 -0miscutils/strings.c +142 -0
include/applets.h+3 -0
| @@ -440,6 +440,9 @@ | |
| #ifdef CONFIG_START_STOP_DAEMON | |
| APPLET_ODDNAME("start-stop-daemon", start_stop_daemon_main, _BB_DIR_SBIN, _BB_SUID_NEVER, start_stop_daemon) | |
| #endif | |
| + | #ifdef CONFIG_STRINGS |
| + | APPLET(strings, strings_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER) |
| + | #endif |
| #ifdef CONFIG_STTY | |
| APPLET(stty, stty_main, _BB_DIR_BIN, _BB_SUID_NEVER) | |
| #endif | |
include/usage.h+9 -0
| @@ -1681,6 +1681,15 @@ | |
| "-s <signal>\t\tsignal to send (default 15)\n"\ | |
| "-a <pathname>\t\tprogram to start (default <executable>)\n" | |
| + | #define strings_trivial_usage \ |
| + | "[-afo] [-n length] [file ... ]" |
| + | #define strings_full_usage \ |
| + | "Display printable strings in a binary file." \ |
| + | "\n\nOptions:" \ |
| + | "\n\t-f\tPrecede each string with the name of the file where it was found." \ |
| + | "\n\t-n N\tSpecifies that at least N characters forms a sequence (default 4)" \ |
| + | "\n\t-o\tEach string is preceded by its decimal offset in the file." |
| + | |
| #define stty_trivial_usage \ | |
| "[-a|g] [-F DEVICE] [SETTING]..." | |
| #define stty_full_usage \ | |
miscutils/Makefile.in+1 -0
| @@ -33,6 +33,7 @@ MISCUTILS-$(CONFIG_MAKEDEVS) += makedevs.o | |
| MISCUTILS-$(CONFIG_MKTEMP) += mktemp.o | |
| MISCUTILS-$(CONFIG_MT) += mt.o | |
| MISCUTILS-$(CONFIG_READLINK) += readlink.o | |
| + | MISCUTILS-$(CONFIG_STRINGS) += strings.o |
| MISCUTILS-$(CONFIG_TIME) += time.o | |
| MISCUTILS-$(CONFIG_UPDATE) += update.o | |
| MISCUTILS-$(CONFIG_WATCHDOG) += watchdog.o | |
miscutils/config.in+1 -0
| @@ -15,6 +15,7 @@ bool 'makedevs' CONFIG_MAKEDEVS | |
| bool 'mktemp' CONFIG_MKTEMP | |
| bool 'mt' CONFIG_MT | |
| bool 'readlink' CONFIG_READLINK | |
| + | bool 'strings' CONFIG_STRINGS |
| bool 'time' CONFIG_TIME | |
| bool 'update' CONFIG_UPDATE | |
| bool 'watchdog' CONFIG_WATCHDOG | |
miscutils/strings.c+142 -0
| @@ -0,0 +1,142 @@ | |
| + | /* vi: set sw=4 ts=4: */ |
| + | /* |
| + | * strings implementation for busybox |
| + | * |
| + | * Copyright (c) 1980, 1987 |
| + | * The Regents of the University of California. All rights reserved. |
| + | * |
| + | * This program is free software; you can redistribute it and/or modify |
| + | * it under the terms of the GNU General Public License as published by |
| + | * the Free Software Foundation; either version 2 of the License, or |
| + | * (at your option) any later version. |
| + | * |
| + | * This program is distributed in the hope that it will be useful, |
| + | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| + | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| + | * General Public License for more details. |
| + | * |
| + | * You should have received a copy of the GNU General Public License |
| + | * along with this program; if not, write to the Free Software |
| + | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| + | * |
| + | * Original copyright notice is retained at the end of this file. |
| + | * |
| + | * Modified for BusyBox by Erik Andersen <[email protected]> |
| + | */ |
| + | |
| + | #include <stdio.h> |
| + | #include <stdlib.h> |
| + | #include <string.h> |
| + | #include <getopt.h> |
| + | #include <unistd.h> |
| + | #include <ctype.h> |
| + | #include "busybox.h" |
| + | |
| + | #define ISSTR(ch) (isprint(ch) || ch == '\t') |
| + | |
| + | int strings_main(int argc, char **argv) |
| + | { |
| + | extern char *optarg; |
| + | extern int optind; |
| + | int ch, cnt; |
| + | int exitcode; |
| + | int oflg, fflg; |
| + | char *file; |
| + | size_t foff, minlen; |
| + | unsigned char *bfr, *C; |
| + | |
| + | |
| + | exitcode = fflg = oflg = 0; |
| + | minlen = -1; |
| + | while ((ch = getopt(argc, argv, "an:of")) > 0) |
| + | switch(ch) { |
| + | case '-': |
| + | break; |
| + | case 'f': |
| + | fflg = 1; |
| + | break; |
| + | case 'n': |
| + | minlen = atoi(optarg); |
| + | break; |
| + | case 'o': |
| + | oflg = 1; |
| + | break; |
| + | default: |
| + | show_usage(); |
| + | } |
| + | argc -= optind; |
| + | argv += optind; |
| + | |
| + | if (minlen == -1) |
| + | minlen = 4; |
| + | |
| + | bfr = xmalloc(minlen); |
| + | bfr[minlen] = '\0'; |
| + | file = "stdin"; |
| + | do { |
| + | if (*argv) { |
| + | fprintf(stderr, "opening '%s'\n", *argv); |
| + | file = *argv++; |
| + | if (!freopen(file, "r", stdin)) { |
| + | perror_msg("%s", file); |
| + | exitcode = EXIT_FAILURE; |
| + | continue; |
| + | } |
| + | } |
| + | foff = 0; |
| + | |
| + | for (cnt = 0; (ch = getchar()) != EOF;) { |
| + | if (ISSTR(ch)) { |
| + | if (!cnt) |
| + | C = bfr; |
| + | *C++ = ch; |
| + | if (++cnt < minlen) |
| + | continue; |
| + | if (fflg) |
| + | printf("%s:", file); |
| + | if (oflg) |
| + | printf("%07ld %s", (long)(foff - minlen), (char *)bfr); |
| + | else |
| + | printf("%s", bfr); |
| + | while ((ch = getchar()) != EOF && ISSTR(ch)) |
| + | putchar((char)ch); |
| + | putchar('\n'); |
| + | } |
| + | cnt = 0; |
| + | } |
| + | } while (*argv); |
| + | exit(exitcode); |
| + | } |
| + | |
| + | /* |
| + | * Copyright (c) 1980, 1987 |
| + | * The Regents of the University of California. All rights reserved. |
| + | * |
| + | * Redistribution and use in source and binary forms, with or without |
| + | * modification, are permitted provided that the following conditions |
| + | * are met: |
| + | * 1. Redistributions of source code must retain the above copyright |
| + | * notice, this list of conditions and the following disclaimer. |
| + | * 2. Redistributions in binary form must reproduce the above copyright |
| + | * notice, this list of conditions and the following disclaimer in the |
| + | * documentation and/or other materials provided with the distribution. |
| + | * |
| + | * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change |
| + | * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change> |
| + | * |
| + | * 4. Neither the name of the University nor the names of its contributors |
| + | * may be used to endorse or promote products derived from this software |
| + | * without specific prior written permission. |
| + | * |
| + | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| + | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| + | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| + | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| + | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| + | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| + | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| + | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| + | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| + | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| + | * SUCH DAMAGE. |
| + | */ |