snprintf/fileext.h

   1 /*      $OpenBSD: fileext.h,v 1.2 2005/06/17 20:40:32 espie Exp $       */
   2 /* $NetBSD: fileext.h,v 1.5 2003/07/18 21:46:41 nathanw 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 /*
  33  * file extension
  34  */
  35 struct __sfileext {
  36         struct  __sbuf _ub; /* ungetc buffer */
  37         struct wchar_io_data _wcio;     /* wide char io status */
  38 };
  39
  40 #define _EXT(fp) ((struct __sfileext *)((fp)->_ext._base))
  41 #define _UB(fp) _EXT(fp)->_ub
  42
  43 #define _FILEEXT_INIT(fp) \
  44 do { \
  45         _UB(fp)._base = NULL; \
  46         _UB(fp)._size = 0; \
  47         WCIO_INIT(fp); \
  48 } while (0)
  49
  50 #define _FILEEXT_SETUP(f, fext) \
  51 do { \
  52         (f)->_ext._base = (unsigned char *)(fext); \
  53         _FILEEXT_INIT(f); \
  54 } while (0)