chiark / gitweb /
multicast_loop option
[disorder] / lib / selection.c
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460b9539 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
28hash *selection_new(void) {
29 return hash_new(sizeof (int));
30}
31
32void 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
39int selection_selected(hash *h, const char *key) {
40 return hash_find(h, key) != 0;
41}
42
43void selection_flip(hash *h, const char *key) {
44 selection_set(h, key, !selection_selected(h, key));
45}
46
47void selection_live(hash *h, const char *key) {
48 int *ptr = hash_find(h, key);
49
50 if(ptr)
51 *ptr = 1;
52}
53
54static 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
64void selection_cleanup(hash *h) {
65 hash_foreach(h, selection_cleanup_callback, h);
66}
67
68static 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
75void selection_empty(hash *h) {
76 hash_foreach(h, selection_empty_callback, h);
77}
78
79/*
80Local Variables:
81c-basic-offset:2
82comment-column:40
83fill-column:79
84indent-tabs-mode:nil
85End:
86*/