/* 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 <andersee@debian.org> */ #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. */