2 * Mini grep implementation for busybox
5 * Copyright (C) 1999 by Lineo, inc.
6 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
34 static const char grep_usage[] =
35 "grep [-ihn]... PATTERN [FILE]...\n"
36 "Search for PATTERN in each FILE or standard input.\n\n"
37 "\t-h\tsuppress the prefixing filename on output\n"
38 "\t-i\tignore case distinctions\n"
39 "\t-n\tprint line number with output lines\n\n"
41 "This version of grep matches full regexps.\n";
43 "This version of grep matches strings (not regexps).\n";
47 static void do_grep(FILE *fp, char* needle, char *fileName, int tellName, int ignoreCase, int tellLine)
51 char haystack[BUF_SIZE];
53 while (fgets (haystack, sizeof (haystack), fp)) {
55 cp = &haystack[strlen (haystack) - 1];
58 fprintf (stderr, "%s: Line too long\n", fileName);
60 if (find_match(haystack, needle, ignoreCase) == TRUE) {
62 printf ("%s:", fileName);
65 printf ("%ld:", line);
67 fputs (haystack, stdout);
73 extern int grep_main (int argc, char **argv)
120 do_grep( stdin, needle, "stdin", FALSE, ignoreCase, tellLine);
125 fp = fopen (fileName, "r");
131 do_grep( fp, needle, fileName, tellName, ignoreCase, tellLine);