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2 | pj | 1 | /*- |
2 | * Copyright (c) 1990, 1993 |
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3 | * The Regents of the University of California. All rights reserved. |
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4 | * |
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5 | * This code is derived from software contributed to Berkeley by |
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6 | * Chris Torek. |
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7 | * |
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8 | * Redistribution and use in source and binary forms, with or without |
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9 | * modification, are permitted provided that the following conditions |
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10 | * are met: |
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11 | * 1. Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * 3. All advertising materials mentioning features or use of this software |
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17 | * must display the following acknowledgement: |
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18 | * This product includes software developed by the University of |
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19 | * California, Berkeley and its contributors. |
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20 | * 4. Neither the name of the University nor the names of its contributors |
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21 | * may be used to endorse or promote products derived from this software |
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22 | * without specific prior written permission. |
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23 | * |
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24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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34 | * SUCH DAMAGE. |
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35 | * |
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36 | * @(#)local.h 8.2 (Berkeley) 1/2/94 |
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37 | */ |
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38 | |||
39 | /* |
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40 | * Information local to this implementation of stdio, |
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41 | * in particular, macros and private variables. |
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42 | */ |
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43 | |||
44 | int __sflush __P((FILE *)); |
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45 | FILE *__sfp __P((void)); |
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46 | int __srefill __P((FILE *)); |
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47 | int __sread __P((void *, char *, int)); |
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48 | int __swrite __P((void *, char const *, int)); |
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49 | fpos_t __sseek __P((void *, fpos_t, int)); |
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50 | int __sclose __P((void *)); |
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51 | void __sinit __P((void)); |
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52 | void _cleanup __P((void)); |
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53 | void (*__cleanup) __P((void)); |
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54 | void __smakebuf __P((FILE *)); |
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55 | int __swhatbuf __P((FILE *, size_t *, int *)); |
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56 | int _fwalk __P((int (*)(FILE *))); |
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57 | int __swsetup __P((FILE *)); |
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58 | int __sflags __P((const char *, int *)); |
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59 | |||
60 | extern int __sdidinit; |
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61 | |||
62 | /* |
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63 | * Return true iff the given FILE cannot be written now. |
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64 | */ |
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65 | #define cantwrite(fp) \ |
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66 | ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ |
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67 | __swsetup(fp)) |
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68 | |||
69 | /* |
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70 | * Test whether the given stdio file has an active ungetc buffer; |
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71 | * release such a buffer, without restoring ordinary unread data. |
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72 | */ |
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73 | #define HASUB(fp) ((fp)->_ub._base != NULL) |
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74 | #define FREEUB(fp) { \ |
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75 | if ((fp)->_ub._base != (fp)->_ubuf) \ |
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76 | free((char *)(fp)->_ub._base); \ |
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77 | (fp)->_ub._base = NULL; \ |
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78 | } |
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79 | |||
80 | /* |
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81 | * test for an fgetln() buffer. |
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82 | */ |
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83 | #define HASLB(fp) ((fp)->_lb._base != NULL) |
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84 | #define FREELB(fp) { \ |
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85 | free((char *)(fp)->_lb._base); \ |
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86 | (fp)->_lb._base = NULL; \ |
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87 | } |