1 /* vi: set sw=4 ts=4: */
3 * Mini uniq implementation for busybox
6 * Copyright (C) 1999,2000,2001 by Lineo, inc.
7 * Written by John Beppu <beppu@lineo.com>
8 * Rewritten by Matt Kraai <kraai@alumni.carnegiemellon.edu>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33 static int print_count;
34 static int print_uniq = 1;
35 static int print_duplicates = 1;
37 static void print_line(char *line, int count, FILE *fp)
39 if ((print_duplicates && count > 1) || (print_uniq && count == 1)) {
41 fprintf(fp, "%7d\t%s", count, line);
47 int uniq_main(int argc, char **argv)
49 FILE *in = stdin, *out = stdout;
50 char *lastline = NULL, *input;
54 while ((opt = getopt(argc, argv, "cdu")) > 0) {
70 if (argv[optind] != NULL) {
71 in = xfopen(argv[optind], "r");
72 if (argv[optind+1] != NULL)
73 out = xfopen(argv[optind+1], "w");
76 while ((input = get_line_from_file(in)) != NULL) {
77 if (lastline == NULL || strcmp(input, lastline) != 0) {
78 print_line(lastline, count, out);
85 print_line(lastline, count, out);