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/*-
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 * Copyright (c) 1990, 1993
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 *      The Regents of the University of California.  All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Chris Torek.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *      This product includes software developed by the University of
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 *      California, Berkeley and its contributors.
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 * 4. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 *      @(#)local.h     8.2 (Berkeley) 1/2/94
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 */
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/*
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 * Information local to this implementation of stdio,
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 * in particular, macros and private variables.
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 */
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int     __sflush __P((FILE *));
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FILE    *__sfp __P((void));
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int     __srefill __P((FILE *));
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int     __sread __P((void *, char *, int));
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int     __swrite __P((void *, char const *, int));
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fpos_t  __sseek __P((void *, fpos_t, int));
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int     __sclose __P((void *));
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void    __sinit __P((void));
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void    _cleanup __P((void));
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void    (*__cleanup) __P((void));
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void    __smakebuf __P((FILE *));
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int     __swhatbuf __P((FILE *, size_t *, int *));
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int     _fwalk __P((int (*)(FILE *)));
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int     __swsetup __P((FILE *));
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int     __sflags __P((const char *, int *));
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extern int __sdidinit;
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/*
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 * Return true iff the given FILE cannot be written now.
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 */
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#define cantwrite(fp) \
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        ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
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         __swsetup(fp))
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/*
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 * Test whether the given stdio file has an active ungetc buffer;
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 * release such a buffer, without restoring ordinary unread data.
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 */
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#define HASUB(fp) ((fp)->_ub._base != NULL)
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#define FREEUB(fp) { \
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        if ((fp)->_ub._base != (fp)->_ubuf) \
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                free((char *)(fp)->_ub._base); \
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        (fp)->_ub._base = NULL; \
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}
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/*
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 * test for an fgetln() buffer.
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 */
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#define HASLB(fp) ((fp)->_lb._base != NULL)
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#define FREELB(fp) { \
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        free((char *)(fp)->_lb._base); \
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        (fp)->_lb._base = NULL; \
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}