Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 2 | /* |
Erik Andersen | 0b874ed | 2000-01-06 01:14:56 +0000 | [diff] [blame] | 3 | * Mini uniq implementation for busybox |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 4 | * |
| 5 | * |
Erik Andersen | 61677fe | 2000-04-13 01:18:56 +0000 | [diff] [blame] | 6 | * Copyright (C) 1999,2000 by Lineo, inc. |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 7 | * Written by John Beppu <beppu@lineo.com> |
Matt Kraai | e0bcce0 | 2000-09-27 02:29:39 +0000 | [diff] [blame] | 8 | * Rewritten by Matt Kraai <kraai@alumni.carnegiemellon.edu> |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 9 | * |
| 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. |
| 14 | * |
| 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. |
| 19 | * |
| 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 |
| 23 | * |
| 24 | */ |
| 25 | |
Eric Andersen | 3570a34 | 2000-09-25 21:45:58 +0000 | [diff] [blame] | 26 | #include "busybox.h" |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 27 | #include <stdio.h> |
John Beppu | 96f1f33 | 2000-01-06 23:49:21 +0000 | [diff] [blame] | 28 | #include <string.h> |
| 29 | #include <errno.h> |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 30 | |
Eric Andersen | 5b5db38 | 2000-12-09 16:37:53 +0000 | [diff] [blame^] | 31 | static int print_count; |
| 32 | static int print_uniq = 1; |
| 33 | static int print_duplicates = 1; |
| 34 | |
| 35 | static void print_line(char *line, int count, FILE *fp) |
| 36 | { |
| 37 | if ((print_duplicates && count > 1) || (print_uniq && count == 1)) { |
| 38 | if (print_count) |
| 39 | fprintf(fp, "%7d\t%s", count, line); |
| 40 | else |
| 41 | fputs(line, fp); |
| 42 | } |
| 43 | } |
| 44 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 45 | int uniq_main(int argc, char **argv) |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 46 | { |
Matt Kraai | e0bcce0 | 2000-09-27 02:29:39 +0000 | [diff] [blame] | 47 | FILE *in = stdin, *out = stdout; |
| 48 | char *lastline = NULL, *input; |
Eric Andersen | 5b5db38 | 2000-12-09 16:37:53 +0000 | [diff] [blame^] | 49 | int opt, count = 0; |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 50 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 51 | /* parse argv[] */ |
Eric Andersen | 5b5db38 | 2000-12-09 16:37:53 +0000 | [diff] [blame^] | 52 | while ((opt = getopt(argc, argv, "cdu")) > 0) { |
| 53 | switch (opt) { |
| 54 | case 'c': |
| 55 | print_count = 1; |
| 56 | break; |
| 57 | case 'd': |
| 58 | print_duplicates = 1; |
| 59 | print_uniq = 0; |
| 60 | break; |
| 61 | case 'u': |
| 62 | print_duplicates = 0; |
| 63 | print_uniq = 1; |
| 64 | break; |
| 65 | } |
| 66 | } |
Matt Kraai | e0bcce0 | 2000-09-27 02:29:39 +0000 | [diff] [blame] | 67 | |
Eric Andersen | 5b5db38 | 2000-12-09 16:37:53 +0000 | [diff] [blame^] | 68 | if (argv[optind] != NULL) { |
| 69 | in = xfopen(argv[optind], "r"); |
| 70 | if (argv[optind+1] != NULL) |
| 71 | out = xfopen(argv[optind+1], "w"); |
Matt Kraai | e0bcce0 | 2000-09-27 02:29:39 +0000 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | while ((input = get_line_from_file(in)) != NULL) { |
| 75 | if (lastline == NULL || strcmp(input, lastline) != 0) { |
Eric Andersen | 5b5db38 | 2000-12-09 16:37:53 +0000 | [diff] [blame^] | 76 | print_line(lastline, count, out); |
Matt Kraai | e0bcce0 | 2000-09-27 02:29:39 +0000 | [diff] [blame] | 77 | free(lastline); |
| 78 | lastline = input; |
Eric Andersen | 5b5db38 | 2000-12-09 16:37:53 +0000 | [diff] [blame^] | 79 | count = 0; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 80 | } |
Eric Andersen | 5b5db38 | 2000-12-09 16:37:53 +0000 | [diff] [blame^] | 81 | count++; |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 82 | } |
Eric Andersen | 5b5db38 | 2000-12-09 16:37:53 +0000 | [diff] [blame^] | 83 | print_line(lastline, count, out); |
Matt Kraai | e0bcce0 | 2000-09-27 02:29:39 +0000 | [diff] [blame] | 84 | free(lastline); |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 85 | |
Matt Kraai | e0bcce0 | 2000-09-27 02:29:39 +0000 | [diff] [blame] | 86 | return EXIT_SUCCESS; |
John Beppu | abb4772 | 2000-01-06 00:48:21 +0000 | [diff] [blame] | 87 | } |