projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| e9ce8d39 A |
1 | /* |
| 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * The contents of this file constitute Original Code as defined in and | |
| 7 | * are subject to the Apple Public Source License Version 1.1 (the | |
| 8 | * "License"). You may not use this file except in compliance with the | |
| 9 | * License. Please obtain a copy of the License at | |
| 10 | * http://www.apple.com/publicsource and read it before using this file. | |
| 11 | * | |
| 12 | * This Original Code and all software distributed under the License are | |
| 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the | |
| 17 | * License for the specific language governing rights and limitations | |
| 18 | * under the License. | |
| 19 | * | |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 22 | /* | |
| 23 | * Copyright (c) 1990, 1993 | |
| 24 | * The Regents of the University of California. All rights reserved. | |
| 25 | * | |
| 26 | * This code is derived from software contributed to Berkeley by | |
| 27 | * Chris Torek. | |
| 28 | * | |
| 29 | * Redistribution and use in source and binary forms, with or without | |
| 30 | * modification, are permitted provided that the following conditions | |
| 31 | * are met: | |
| 32 | * 1. Redistributions of source code must retain the above copyright | |
| 33 | * notice, this list of conditions and the following disclaimer. | |
| 34 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 35 | * notice, this list of conditions and the following disclaimer in the | |
| 36 | * documentation and/or other materials provided with the distribution. | |
| 37 | * 3. All advertising materials mentioning features or use of this software | |
| 38 | * must display the following acknowledgement: | |
| 39 | * This product includes software developed by the University of | |
| 40 | * California, Berkeley and its contributors. | |
| 41 | * 4. Neither the name of the University nor the names of its contributors | |
| 42 | * may be used to endorse or promote products derived from this software | |
| 43 | * without specific prior written permission. | |
| 44 | * | |
| 45 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 46 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 47 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 48 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 49 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 50 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 51 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 52 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 53 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 54 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 55 | * SUCH DAMAGE. | |
| 56 | */ | |
| 57 | ||
| 58 | /* | |
| 59 | * Information local to this implementation of stdio, | |
| 60 | * in particular, macros and private variables. | |
| 61 | */ | |
| 62 | ||
| 63 | extern int __sflush __P((FILE *)); | |
| 64 | extern FILE *__sfp __P((void)); | |
| 65 | extern int __srefill __P((FILE *)); | |
| 66 | extern int __sread __P((void *, char *, int)); | |
| 67 | extern int __swrite __P((void *, char const *, int)); | |
| 68 | extern fpos_t __sseek __P((void *, fpos_t, int)); | |
| 69 | extern int __sclose __P((void *)); | |
| 70 | extern void __sinit __P((void)); | |
| 71 | extern void _cleanup __P((void)); | |
| 72 | extern void (*__cleanup) __P((void)); | |
| 73 | extern void __smakebuf __P((FILE *)); | |
| 74 | extern int __swhatbuf __P((FILE *, size_t *, int *)); | |
| 75 | extern int _fwalk __P((int (*)(FILE *))); | |
| 76 | extern int __swsetup __P((FILE *)); | |
| 77 | extern int __sflags __P((const char *, int *)); | |
| 78 | ||
| 79 | extern int __sdidinit; | |
| 80 | extern void (*__cleanup) __P((void)); | |
| 81 | ||
| 82 | /* | |
| 83 | * Return true iff the given FILE cannot be written now. | |
| 84 | */ | |
| 85 | #define cantwrite(fp) \ | |
| 86 | ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ | |
| 87 | __swsetup(fp)) | |
| 88 | ||
| 89 | /* | |
| 90 | * Test whether the given stdio file has an active ungetc buffer; | |
| 91 | * release such a buffer, without restoring ordinary unread data. | |
| 92 | */ | |
| 93 | #define HASUB(fp) ((fp)->_ub._base != NULL) | |
| 94 | #define FREEUB(fp) { \ | |
| 95 | if ((fp)->_ub._base != (fp)->_ubuf) \ | |
| 96 | free((char *)(fp)->_ub._base); \ | |
| 97 | (fp)->_ub._base = NULL; \ | |
| 98 | } | |
| 99 | ||
| 100 | /* | |
| 101 | * test for an fgetln() buffer. | |
| 102 | */ | |
| 103 | #define HASLB(fp) ((fp)->_lb._base != NULL) | |
| 104 | #define FREELB(fp) { \ | |
| 105 | free((char *)(fp)->_lb._base); \ | |
| 106 | (fp)->_lb._base = NULL; \ | |
| 107 | } |