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
25 18-Dec-1999 Konstantin Boldyshev <konst@voshod.com>
27 + -q option (be quiet)
28 + exit code depending on grep result (TRUE or FALSE)
42 static const char grep_usage[] =
43 "grep [OPTIONS]... PATTERN [FILE]...\n\n"
44 "Search for PATTERN in each FILE or standard input.\n\n"
46 "\t-h\tsuppress the prefixing filename on output\n"
47 "\t-i\tignore case distinctions\n"
48 "\t-n\tprint line number with output lines\n"
49 "\t-q\tbe quiet. Returns 0 if result was found, 1 otherwise\n\n"
51 "This version of grep matches full regular expresions.\n";
53 "This version of grep matches strings (not regular expresions).\n";
56 static int match = FALSE, beQuiet = FALSE;
58 static void do_grep(FILE *fp, char* needle, char *fileName, int tellName, int ignoreCase, int tellLine)
62 char haystack[BUF_SIZE];
64 while (fgets (haystack, sizeof (haystack), fp)) {
66 cp = &haystack[strlen (haystack) - 1];
69 fprintf (stderr, "%s: Line too long\n", fileName);
71 if (find_match(haystack, needle, ignoreCase) == TRUE) {
73 printf ("%s:", fileName);
76 printf ("%ld:", line);
79 fputs (haystack, stdout);
87 extern int grep_main (int argc, char **argv)
138 do_grep( stdin, needle, "stdin", FALSE, ignoreCase, tellLine);
140 /* Never print the filename for just one file */
146 fp = fopen (fileName, "r");
152 do_grep( fp, needle, fileName, tellName, ignoreCase, tellLine);