source: mainline/uspace/srv/hid/input/layout.c@ fa942bc

topic/simplify-dev-export
Last change on this file since fa942bc was 28a5ebd, checked in by Martin Decky <martin@…>, 5 years ago

Use char32_t instead of wchat_t to represent UTF-32 strings

The intention of the native HelenOS string API has been always to
support Unicode in the UTF-8 and UTF-32 encodings as the sole character
representations and ignore the obsolete mess of older single-byte and
multibyte character encodings. Before C11, the wchar_t type has been
slightly misused for the purpose of the UTF-32 strings. The newer
char32_t type is obviously a much more suitable option. The standard
defines char32_t as uint_least32_t, thus we can take the liberty to fix
it to uint32_t.

To maintain compatilibity with the C Standard, the putwchar(wchar_t)
functions has been replaced by our custom putuchar(char32_t) functions
where appropriate.

  • Property mode set to 100644
File size: 2.2 KB
Line 
1/*
2 * Copyright (c) 2011 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/**
30 * @addtogroup inputgen generic
31 * @brief Keyboard layouts
32 * @ingroup input
33 * @{
34 */
35/** @file
36 */
37
38#include <errno.h>
39#include <stdlib.h>
40#include "input.h"
41#include "layout.h"
42
43/** Create a new layout instance. */
44layout_t *layout_create(layout_ops_t *ops)
45{
46 layout_t *layout;
47
48 layout = calloc(1, sizeof(layout_t));
49 if (layout == NULL) {
50 printf("%s: Out of memory.\n", NAME);
51 return NULL;
52 }
53
54 layout->ops = ops;
55 if ((*ops->create)(layout) != EOK) {
56 free(layout);
57 return NULL;
58 }
59
60 return layout;
61}
62
63/** Destroy layout instance. */
64void layout_destroy(layout_t *layout)
65{
66 (*layout->ops->destroy)(layout);
67 free(layout);
68}
69
70/** Parse keyboard event. */
71char32_t layout_parse_ev(layout_t *layout, kbd_event_t *ev)
72{
73 return (*layout->ops->parse_ev)(layout, ev);
74}
75
76/**
77 * @}
78 */
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