gonzui

    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: 
   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(WCIO_GET(fp), 0, sizeof(struct wchar_io_data))
   80: 
   81: #endif /*_WCIO_H_*/