1 /* $OpenBSD: wcio.h,v 1.2 2013/04/17 17:40:35 tedu 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 35 /* minimal requirement of SUSv2 */ 36 #define WCIO_UNGETWC_BUFSIZE 1 37 38 struct wchar_io_data { 39 mbstate_t wcio_mbstate_in; 40 mbstate_t wcio_mbstate_out; 41 42 wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE]; 43 size_t wcio_ungetwc_inbuf; 44 45 int wcio_mode; /* orientation */ 46 }; 47 48 #define WCIO_GET(fp) \ 49 (_EXT(fp) ? &(_EXT(fp)->_wcio) : (struct wchar_io_data *)0) 50 51 #define _SET_ORIENTATION(fp, mode) \ 52 do {\ 53 struct wchar_io_data *_wcio = WCIO_GET(fp); \ 54 if (_wcio && _wcio->wcio_mode == 0) \ 55 _wcio->wcio_mode = (mode);\ 56 } while (0) 57 58 /* 59 * WCIO_FREE should be called by fclose 60 */ 61 #define WCIO_FREE(fp) \ 62 do {\ 63 struct wchar_io_data *_wcio = WCIO_GET(fp); \ 64 if (_wcio) { \ 65 _wcio->wcio_mode = 0;\ 66 _wcio->wcio_ungetwc_inbuf = 0;\ 67 } \ 68 } while (0) 69 70 #define WCIO_FREEUB(fp) \ 71 do {\ 72 struct wchar_io_data *_wcio = WCIO_GET(fp); \ 73 if (_wcio) { \ 74 _wcio->wcio_ungetwc_inbuf = 0;\ 75 } \ 76 } while (0) 77 78 #define WCIO_INIT(fp) \ 79 memset(&(_EXT(fp)->_wcio), 0, sizeof(struct wchar_io_data)) 80 81 #endif /*_WCIO_H_*/ 82