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1 | /* $OpenBSD: wcio.h,v 1.1 2005/06/17 20:40:32 espie Exp $ */ |
2 | /* $NetBSD: wcio.h,v 1.3 2003/01/18 11:30:00 thorpej Exp $ */ | |
3 | ||
4 | /*- | |
5 | * Copyright (c)2001 Citrus Project, | |
6 | * All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
27 | * SUCH DAMAGE. | |
28 | * | |
29 | * $Citrus$ | |
30 | */ | |
31 | ||
32 | #ifndef _WCIO_H_ | |
33 | #define _WCIO_H_ | |
34 | ||
b4051ad8 | 35 | #include <stddef.h> |
9f18918b | 36 | #include <wchar.h> |
b4051ad8 | 37 | |
bf0d695d PMF |
38 | /* minimal requirement of SUSv2 */ |
39 | #define WCIO_UNGETWC_BUFSIZE 1 | |
40 | ||
41 | struct wchar_io_data { | |
42 | mbstate_t wcio_mbstate_in; | |
43 | mbstate_t wcio_mbstate_out; | |
44 | ||
45 | wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE]; | |
46 | size_t wcio_ungetwc_inbuf; | |
47 | ||
48 | int wcio_mode; /* orientation */ | |
49 | }; | |
50 | ||
51 | #define WCIO_GET(fp) \ | |
52 | (_EXT(fp) ? &(_EXT(fp)->_wcio) : (struct wchar_io_data *)0) | |
53 | ||
240578ad PMF |
54 | #define WCIO_GET_NONULL(fp) \ |
55 | (&(_EXT(fp)->_wcio)) | |
56 | ||
bf0d695d PMF |
57 | #define _SET_ORIENTATION(fp, mode) \ |
58 | do {\ | |
59 | struct wchar_io_data *_wcio = WCIO_GET(fp); \ | |
60 | if (_wcio && _wcio->wcio_mode == 0) \ | |
61 | _wcio->wcio_mode = (mode);\ | |
62 | } while (0) | |
63 | ||
64 | /* | |
65 | * WCIO_FREE should be called by fclose | |
66 | */ | |
67 | #define WCIO_FREE(fp) \ | |
68 | do {\ | |
69 | struct wchar_io_data *_wcio = WCIO_GET(fp); \ | |
70 | if (_wcio) { \ | |
71 | _wcio->wcio_mode = 0;\ | |
72 | _wcio->wcio_ungetwc_inbuf = 0;\ | |
73 | } \ | |
74 | } while (0) | |
75 | ||
76 | #define WCIO_FREEUB(fp) \ | |
77 | do {\ | |
78 | struct wchar_io_data *_wcio = WCIO_GET(fp); \ | |
79 | if (_wcio) { \ | |
80 | _wcio->wcio_ungetwc_inbuf = 0;\ | |
81 | } \ | |
82 | } while (0) | |
83 | ||
84 | #define WCIO_INIT(fp) \ | |
240578ad | 85 | memset(WCIO_GET_NONULL(fp), 0, sizeof(struct wchar_io_data)) |
bf0d695d PMF |
86 | |
87 | #endif /*_WCIO_H_*/ |