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local.h revision 1.15 
      1 /*	$NetBSD: local.h,v 1.15 2003/03/07 07:11:38 tshiozak Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Chris Torek.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *	@(#)local.h	8.3 (Berkeley) 7/3/94
     39  */
     40 
     41 #include "wcio.h"
     42 #include "fileext.h"
     43 
     44 /*
     45  * Information local to this implementation of stdio,
     46  * in particular, macros and private variables.
     47  */
     48 
     49 extern int	__sflush __P((FILE *));
     50 extern FILE	*__sfp __P((void));
     51 extern int	__srefill __P((FILE *));
     52 extern int	__sread __P((void *, char *, int));
     53 extern int	__swrite __P((void *, char const *, int));
     54 extern fpos_t	__sseek __P((void *, fpos_t, int));
     55 extern int	__sclose __P((void *));
     56 extern void	__sinit __P((void));
     57 extern void	_cleanup __P((void));
     58 extern void	(*__cleanup) __P((void));
     59 extern void	__smakebuf __P((FILE *));
     60 extern int	__swhatbuf __P((FILE *, size_t *, int *));
     61 extern int	_fwalk __P((int (*)(FILE *)));
     62 extern char	*_mktemp __P((char *));
     63 extern int	__swsetup __P((FILE *));
     64 extern int	__sflags __P((const char *, int *));
     65 extern int	__svfscanf __P((FILE * __restrict, const char * __restrict,
     66 		    _BSD_VA_LIST_))
     67 		    __attribute__((__format__(__scanf__, 2, 0)));
     68 extern int	__svfscanf_unlocked __P((FILE * __restrict, const char * __restrict,
     69 		    _BSD_VA_LIST_))
     70 		    __attribute__((__format__(__scanf__, 2, 0)));
     71 
     72 extern int	__sdidinit;
     73 
     74 extern int	__gettemp __P((char *, int *, int));
     75 
     76 extern wint_t	__fgetwc_unlock __P((FILE *));
     77 extern wint_t	__fputwc_unlock __P((wchar_t, FILE *));
     78 /*
     79  * Return true iff the given FILE cannot be written now.
     80  */
     81 #define	cantwrite(fp) \
     82 	((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
     83 	 __swsetup(fp))
     84 
     85 /*
     86  * Test whether the given stdio file has an active ungetc buffer;
     87  * release such a buffer, without restoring ordinary unread data.
     88  */
     89 #define	HASUB(fp) (_UB(fp)._base != NULL)
     90 #define	FREEUB(fp) { \
     91 	if (_UB(fp)._base != (fp)->_ubuf) \
     92 		free((char *)_UB(fp)._base); \
     93 	_UB(fp)._base = NULL; \
     94 }
     95 
     96 /*
     97  * test for an fgetln() buffer.
     98  */
     99 #define	HASLB(fp) ((fp)->_lb._base != NULL)
    100 #define	FREELB(fp) { \
    101 	free((char *)(fp)->_lb._base); \
    102 	(fp)->_lb._base = NULL; \
    103 }
    104 
    105