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authorGravatar Eric Andersen <andersen@codepoet.org>2002-11-07 02:09:37 +0000
committerGravatar Eric Andersen <andersen@codepoet.org>2002-11-07 02:09:37 +0000
commitef5e8f8de04af2f87a77738bfbad2ac1e58605d9 (patch)
tree5a406cd39982e815c69cdbeb1c739c774cb13d62 /miscutils/strings.c
parentf9496d4e44f41b0964ec82377ab0a688ff0d06df (diff)
downloadbusybox-ef5e8f8de04af2f87a77738bfbad2ac1e58605d9.tar.gz
busybox-ef5e8f8de04af2f87a77738bfbad2ac1e58605d9.tar.bz2
Implement a small strings applet
Diffstat (limited to 'miscutils/strings.c')
-rw-r--r--miscutils/strings.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/miscutils/strings.c b/miscutils/strings.c
new file mode 100644
index 000000000..043d6b8c1
--- /dev/null
+++ b/miscutils/strings.c
@@ -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 <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.
+ */