| 1 | /* |
| 2 | * This file is part of DisOrder |
| 3 | * Copyright (C) 2006 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 18 | * USA |
| 19 | */ |
| 20 | |
| 21 | #include <config.h> |
| 22 | #include "types.h" |
| 23 | |
| 24 | #include "mem.h" |
| 25 | #include "hash.h" |
| 26 | #include "selection.h" |
| 27 | |
| 28 | hash *selection_new(void) { |
| 29 | return hash_new(sizeof (int)); |
| 30 | } |
| 31 | |
| 32 | void selection_set(hash *h, const char *key, int selected) { |
| 33 | if(selected) |
| 34 | hash_add(h, key, xmalloc_noptr(sizeof (int)), HASH_INSERT_OR_REPLACE); |
| 35 | else |
| 36 | hash_remove(h, key); |
| 37 | } |
| 38 | |
| 39 | int selection_selected(hash *h, const char *key) { |
| 40 | return hash_find(h, key) != 0; |
| 41 | } |
| 42 | |
| 43 | void selection_flip(hash *h, const char *key) { |
| 44 | selection_set(h, key, !selection_selected(h, key)); |
| 45 | } |
| 46 | |
| 47 | void selection_live(hash *h, const char *key) { |
| 48 | int *ptr = hash_find(h, key); |
| 49 | |
| 50 | if(ptr) |
| 51 | *ptr = 1; |
| 52 | } |
| 53 | |
| 54 | static int selection_cleanup_callback(const char *key, |
| 55 | void *value, |
| 56 | void *v) { |
| 57 | if(*(int *)value) |
| 58 | *(int *)value = 0; |
| 59 | else |
| 60 | hash_remove((hash *)v, key); |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | void selection_cleanup(hash *h) { |
| 65 | hash_foreach(h, selection_cleanup_callback, h); |
| 66 | } |
| 67 | |
| 68 | static int selection_empty_callback(const char *key, |
| 69 | void attribute((unused)) *value, |
| 70 | void *v) { |
| 71 | hash_remove((hash *)v, key); |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | void selection_empty(hash *h) { |
| 76 | hash_foreach(h, selection_empty_callback, h); |
| 77 | } |
| 78 | |
| 79 | /* |
| 80 | Local Variables: |
| 81 | c-basic-offset:2 |
| 82 | comment-column:40 |
| 83 | fill-column:79 |
| 84 | indent-tabs-mode:nil |
| 85 | End: |
| 86 | */ |