projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 8f953e65 CP |
1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * Chris Torek. | |
| 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 | * 3. All advertising materials mentioning features or use of this software | |
| 17 | * must display the following acknowledgement: | |
| 18 | * This product includes software developed by the University of | |
| 19 | * California, Berkeley and its contributors. | |
| 20 | * 4. Neither the name of the University nor the names of its contributors | |
| 21 | * may be used to endorse or promote products derived from this software | |
| 22 | * without specific prior written permission. | |
| 23 | * | |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 34 | * SUCH DAMAGE. | |
| 35 | * | |
| 36 | * from: @(#)local.h 5.3 (Berkeley) 5/6/93 | |
| 37 | * $Id: local.h,v 1.15 1994/01/27 06:10:29 proven Exp $ | |
| 38 | */ | |
| 39 | ||
| 40 | /* | |
| 41 | * Information local to this implementation of stdio, | |
| 42 | * in particular, macros and private variables. | |
| 43 | */ | |
| 44 | ||
| 45 | FILE *__sfp __P((void)); | |
| 46 | int __sflush __P((FILE *)); | |
| 47 | int __srefill __P((FILE *)); | |
| 48 | int __swrite __P((FILE *, const char *, int)); | |
| 49 | int __sread __P((FILE *, char *, int)); | |
| 50 | fpos_t __sseek __P((FILE *, fpos_t, int)); | |
| 51 | int __sclose __P((FILE *)); | |
| 52 | void __sinit __P((void)); | |
| 53 | void _cleanup __P((void)); | |
| 54 | void (*__cleanup) __P((void)); | |
| 55 | void __smakebuf __P((FILE *)); | |
| 56 | int __swhatbuf __P((FILE *, size_t *, int *)); | |
| 57 | int __swalk_sflush __P(()); | |
| 58 | int __swsetup __P((FILE *)); | |
| 59 | int __sflags __P((const char *, int *)); | |
| 60 | ||
| 61 | extern int __sdidinit; | |
| 62 | ||
| 63 | /* | |
| 64 | * Return true iff the given FILE cannot be written now. | |
| 65 | */ | |
| 66 | #define cantwrite(fp) \ | |
| 67 | ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ | |
| 68 | __swsetup(fp)) | |
| 69 | ||
| 70 | /* | |
| 71 | * Test whether the given stdio file has an active ungetc buffer; | |
| 72 | * release such a buffer, without restoring ordinary unread data. | |
| 73 | */ | |
| 74 | #define HASUB(fp) ((fp)->_ub._base != NULL) | |
| 75 | #define FREEUB(fp) { \ | |
| 76 | if ((fp)->_ub._base != (fp)->_ubuf) \ | |
| 77 | free((char *)(fp)->_ub._base); \ | |
| 78 | (fp)->_ub._base = NULL; \ | |
| 79 | } | |
| 80 | ||
| 81 | /* | |
| 82 | * test for an fgetline() buffer. | |
| 83 | */ | |
| 84 | #define HASLB(fp) ((fp)->_lb._base != NULL) | |
| 85 | #define FREELB(fp) { \ | |
| 86 | free((char *)(fp)->_lb._base); \ | |
| 87 | (fp)->_lb._base = NULL; \ | |
| 88 | } |