diff options
Diffstat (limited to 'lib/libc/stdio/wcio.h')
| -rw-r--r-- | lib/libc/stdio/wcio.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/lib/libc/stdio/wcio.h b/lib/libc/stdio/wcio.h new file mode 100644 index 00000000000..1b41ec971d2 --- /dev/null +++ b/lib/libc/stdio/wcio.h @@ -0,0 +1,81 @@ +/* $OpenBSD: wcio.h,v 1.1 2005/06/17 20:40:32 espie Exp $ */ +/* $NetBSD: wcio.h,v 1.3 2003/01/18 11:30:00 thorpej Exp $ */ + +/*- + * Copyright (c)2001 Citrus Project, + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Citrus$ + */ + +#ifndef _WCIO_H_ +#define _WCIO_H_ + +/* minimal requirement of SUSv2 */ +#define WCIO_UNGETWC_BUFSIZE 1 + +struct wchar_io_data { + mbstate_t wcio_mbstate_in; + mbstate_t wcio_mbstate_out; + + wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE]; + size_t wcio_ungetwc_inbuf; + + int wcio_mode; /* orientation */ +}; + +#define WCIO_GET(fp) \ + (_EXT(fp) ? &(_EXT(fp)->_wcio) : (struct wchar_io_data *)0) + +#define _SET_ORIENTATION(fp, mode) \ +do {\ + struct wchar_io_data *_wcio = WCIO_GET(fp); \ + if (_wcio && _wcio->wcio_mode == 0) \ + _wcio->wcio_mode = (mode);\ +} while (0) + +/* + * WCIO_FREE should be called by fclose + */ +#define WCIO_FREE(fp) \ +do {\ + struct wchar_io_data *_wcio = WCIO_GET(fp); \ + if (_wcio) { \ + _wcio->wcio_mode = 0;\ + _wcio->wcio_ungetwc_inbuf = 0;\ + } \ +} while (0) + +#define WCIO_FREEUB(fp) \ +do {\ + struct wchar_io_data *_wcio = WCIO_GET(fp); \ + if (_wcio) { \ + _wcio->wcio_ungetwc_inbuf = 0;\ + } \ +} while (0) + +#define WCIO_INIT(fp) \ + memset(WCIO_GET(fp), 0, sizeof(struct wchar_io_data)) + +#endif /*_WCIO_H_*/ |