local.h
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上传日期:2007-04-14
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文件大小:3k
- /*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
- *
- * from: @(#)local.h 5.3 (Berkeley) 5/6/93
- * $Id$
- */
- /*
- * Information local to this implementation of stdio,
- * in particular, macros and private variables.
- */
- #include <sys/types.h>
- #include <stddef.h>
- extern FILE *__sfp __P_((void));
- extern int __sflush __P_((FILE *));
- extern int __srefill __P_((FILE *));
- extern int __swrite __P_((FILE *, const char *, int));
- extern int __sread __P_((FILE *, char *, int));
- extern fpos_t __sseek __P_((FILE *, off_t, int));
- extern int __sclose __P_((FILE *));
- extern void __sinit __P_((void));
- extern void _cleanup __P_((void));
- extern void __smakebuf __P_((FILE *));
- extern int __swhatbuf __P_((FILE *, size_t *, int *));
- extern int __swalk_sflush __P_(());
- extern int __swsetup __P_((FILE *));
- extern int __sflags __P_((const char *, int *));
- extern void (*__cleanup) __P_((void));
- /*
- * Return true iff the given FILE cannot be written now.
- */
- #define cantwrite(fp)
- ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) &&
- __swsetup(fp))
- /*
- * Test whether the given stdio file has an active ungetc buffer;
- * release such a buffer, without restoring ordinary unread data.
- */
- #define HASUB(fp) ((fp)->_ub._base != NULL)
- #define FREEUB(fp) {
- if ((fp)->_ub._base != (fp)->_ubuf)
- free((char *)(fp)->_ub._base);
- (fp)->_ub._base = NULL;
- }
- /*
- * test for an fgetline() buffer.
- */
- #define HASLB(fp) ((fp)->_lb._base != NULL)
- #define FREELB(fp) {
- free((char *)(fp)->_lb._base);
- (fp)->_lb._base = NULL;
- }