| 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 | * SPDX-License-Identifier: BSD-2-Clause |
| 6 | * |
| 7 | * Copyright (C)2001 Citrus Project, |
| 8 | * All rights reserved. |
| 9 | * |
| 10 | * $Citrus$ |
| 11 | */ |
| 12 | |
| 13 | #ifndef _WCIO_H_ |
| 14 | #define _WCIO_H_ |
| 15 | |
| 16 | #include <stddef.h> |
| 17 | #include <wchar.h> |
| 18 | |
| 19 | /* minimal requirement of SUSv2 */ |
| 20 | #define WCIO_UNGETWC_BUFSIZE 1 |
| 21 | |
| 22 | struct wchar_io_data { |
| 23 | mbstate_t wcio_mbstate_in; |
| 24 | mbstate_t wcio_mbstate_out; |
| 25 | |
| 26 | wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE]; |
| 27 | size_t wcio_ungetwc_inbuf; |
| 28 | |
| 29 | int wcio_mode; /* orientation */ |
| 30 | }; |
| 31 | |
| 32 | #define WCIO_GET(fp) \ |
| 33 | (_EXT(fp) ? &(_EXT(fp)->_wcio) : (struct wchar_io_data *)0) |
| 34 | |
| 35 | #define WCIO_GET_NONULL(fp) \ |
| 36 | (&(_EXT(fp)->_wcio)) |
| 37 | |
| 38 | #define _SET_ORIENTATION(fp, mode) \ |
| 39 | do {\ |
| 40 | struct wchar_io_data *_wcio = WCIO_GET(fp); \ |
| 41 | if (_wcio && _wcio->wcio_mode == 0) \ |
| 42 | _wcio->wcio_mode = (mode);\ |
| 43 | } while (0) |
| 44 | |
| 45 | /* |
| 46 | * WCIO_FREE should be called by fclose |
| 47 | */ |
| 48 | #define WCIO_FREE(fp) \ |
| 49 | do {\ |
| 50 | struct wchar_io_data *_wcio = WCIO_GET(fp); \ |
| 51 | if (_wcio) { \ |
| 52 | _wcio->wcio_mode = 0;\ |
| 53 | _wcio->wcio_ungetwc_inbuf = 0;\ |
| 54 | } \ |
| 55 | } while (0) |
| 56 | |
| 57 | #define WCIO_FREEUB(fp) \ |
| 58 | do {\ |
| 59 | struct wchar_io_data *_wcio = WCIO_GET(fp); \ |
| 60 | if (_wcio) { \ |
| 61 | _wcio->wcio_ungetwc_inbuf = 0;\ |
| 62 | } \ |
| 63 | } while (0) |
| 64 | |
| 65 | #define WCIO_INIT(fp) \ |
| 66 | memset(WCIO_GET_NONULL(fp), 0, sizeof(struct wchar_io_data)) |
| 67 | |
| 68 | #endif /*_WCIO_H_*/ |