diff options
Diffstat (limited to 'lib/libc/stdio/local.h')
| -rw-r--r-- | lib/libc/stdio/local.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/lib/libc/stdio/local.h b/lib/libc/stdio/local.h new file mode 100644 index 000000000000..cbc07a9d727b --- /dev/null +++ b/lib/libc/stdio/local.h @@ -0,0 +1,87 @@ +/*- + * Copyright (c) 1990, 1993 + * 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. + * + * @(#)local.h 8.3 (Berkeley) 7/3/94 + */ + +/* + * Information local to this implementation of stdio, + * in particular, macros and private variables. + */ + +extern int __sflush __P((FILE *)); +extern FILE *__sfp __P((void)); +extern int __srefill __P((FILE *)); +extern int __sread __P((void *, char *, int)); +extern int __swrite __P((void *, char const *, int)); +extern fpos_t __sseek __P((void *, fpos_t, int)); +extern int __sclose __P((void *)); +extern void __sinit __P((void)); +extern void _cleanup __P((void)); +extern void (*__cleanup) __P((void)); +extern void __smakebuf __P((FILE *)); +extern int __swhatbuf __P((FILE *, size_t *, int *)); +extern int _fwalk __P((int (*)(FILE *))); +extern int __swsetup __P((FILE *)); +extern int __sflags __P((const char *, int *)); + +extern int __sdidinit; + +/* + * 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 fgetln() buffer. + */ +#define HASLB(fp) ((fp)->_lb._base != NULL) +#define FREELB(fp) { \ + free((char *)(fp)->_lb._base); \ + (fp)->_lb._base = NULL; \ +} |