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