| 1 | /* perlio.h |
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| 2 | * |
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| 3 | * Copyright (c) 1997-2002, Larry Wall |
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| 4 | * |
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| 5 | * You may distribute under the terms of either the GNU General Public |
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| 6 | * License or the Artistic License, as specified in the README file. |
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| 7 | * |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef _PERLIO_H |
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| 11 | #define _PERLIO_H |
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| 12 | /* |
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| 13 | Interface for perl to IO functions. |
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| 14 | There is a hierachy of Configure determined #define controls: |
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| 15 | USE_STDIO - forces PerlIO_xxx() to be #define-d onto stdio functions. |
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| 16 | This is used for x2p subdirectory and for conservative |
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| 17 | builds - "just like perl5.00X used to be". |
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| 18 | This dominates over the others. |
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| 19 | |
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| 20 | USE_PERLIO - The primary Configure variable that enables PerlIO. |
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| 21 | If USE_PERLIO is _NOT_ set |
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| 22 | then USE_STDIO above will be set to be conservative. |
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| 23 | If USE_PERLIO is set |
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| 24 | then there are two modes determined by USE_SFIO: |
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| 25 | |
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| 26 | USE_SFIO - If set causes PerlIO_xxx() to be #define-d onto sfio functions. |
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| 27 | A backward compatability mode for some specialist applications. |
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| 28 | |
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| 29 | If USE_SFIO is not set then PerlIO_xxx() are real functions |
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| 30 | defined in perlio.c which implement extra functionality |
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| 31 | required for utf8 support. |
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| 32 | |
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| 33 | One further note - the table-of-functions scheme controlled |
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| 34 | by PERL_IMPLICIT_SYS turns on USE_PERLIO so that iperlsys.h can |
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| 35 | #define PerlIO_xxx() to go via the function table, without having |
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| 36 | to #undef them from (say) stdio forms. |
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| 37 | |
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| 38 | */ |
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| 39 | |
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| 40 | #if defined(PERL_IMPLICIT_SYS) |
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| 41 | #ifndef USE_PERLIO |
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| 42 | #ifndef NETWARE |
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| 43 | /* # define USE_PERLIO */ |
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| 44 | #endif |
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| 45 | #endif |
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| 46 | #endif |
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| 47 | |
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| 48 | #ifndef USE_PERLIO |
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| 49 | # define USE_STDIO |
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| 50 | #endif |
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| 51 | |
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| 52 | #ifdef USE_STDIO |
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| 53 | # ifndef PERLIO_IS_STDIO |
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| 54 | # define PERLIO_IS_STDIO |
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| 55 | # endif |
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| 56 | #endif |
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| 57 | |
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| 58 | /* -------------------- End of Configure controls ---------------------------- */ |
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| 59 | |
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| 60 | /* |
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| 61 | * Although we may not want stdio to be used including <stdio.h> here |
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| 62 | * avoids issues where stdio.h has strange side effects |
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| 63 | */ |
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| 64 | #include <stdio.h> |
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| 65 | |
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| 66 | #ifdef __BEOS__ |
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| 67 | int fseeko(FILE *stream, off_t offset, int whence); |
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| 68 | off_t ftello(FILE *stream); |
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| 69 | #endif |
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| 70 | |
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| 71 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FTELLO) && !defined(USE_FTELL64) |
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| 72 | #define ftell ftello |
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| 73 | #endif |
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| 74 | |
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| 75 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FSEEKO) && !defined(USE_FSEEK64) |
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| 76 | #define fseek fseeko |
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| 77 | #endif |
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| 78 | |
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| 79 | /* BS2000 includes are sometimes a bit non standard :-( */ |
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| 80 | #if defined(POSIX_BC) && defined(O_BINARY) && !defined(O_TEXT) |
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| 81 | #undef O_BINARY |
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| 82 | #endif |
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| 83 | |
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| 84 | #ifdef PERLIO_IS_STDIO |
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| 85 | /* #define PerlIO_xxxx() as equivalent stdio function */ |
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| 86 | #include "perlsdio.h" |
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| 87 | #else /* PERLIO_IS_STDIO */ |
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| 88 | #ifdef USE_SFIO |
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| 89 | /* #define PerlIO_xxxx() as equivalent sfio function */ |
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| 90 | #include "perlsfio.h" |
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| 91 | #endif /* USE_SFIO */ |
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| 92 | #endif /* PERLIO_IS_STDIO */ |
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| 93 | |
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| 94 | #ifndef PerlIO |
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| 95 | /* ----------- PerlIO implementation ---------- */ |
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| 96 | /* PerlIO not #define-d to something else - define the implementation */ |
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| 97 | |
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| 98 | typedef struct _PerlIO PerlIOl; |
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| 99 | typedef struct _PerlIO_funcs PerlIO_funcs; |
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| 100 | typedef PerlIOl *PerlIO; |
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| 101 | #define PerlIO PerlIO |
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| 102 | #define PERLIO_LAYERS 1 |
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| 103 | |
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| 104 | extern void PerlIO_define_layer(pTHX_ PerlIO_funcs *tab); |
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| 105 | extern PerlIO_funcs *PerlIO_find_layer(pTHX_ const char *name, STRLEN len, |
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| 106 | int load); |
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| 107 | extern PerlIO *PerlIO_push(pTHX_ PerlIO *f, PerlIO_funcs *tab, |
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| 108 | const char *mode, SV *arg); |
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| 109 | extern void PerlIO_pop(pTHX_ PerlIO *f); |
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| 110 | extern void PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param); |
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| 111 | |
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| 112 | #endif /* PerlIO */ |
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| 113 | |
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| 114 | /* ----------- End of implementation choices ---------- */ |
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| 115 | |
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| 116 | #ifndef PERLIO_IS_STDIO |
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| 117 | /* Not using stdio _directly_ as PerlIO */ |
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| 118 | |
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| 119 | /* We now need to determine what happens if source trys to use stdio. |
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| 120 | * There are three cases based on PERLIO_NOT_STDIO which XS code |
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| 121 | * can set how it wants. |
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| 122 | */ |
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| 123 | |
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| 124 | #ifdef PERL_CORE |
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| 125 | /* Make a choice for perl core code |
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| 126 | - currently this is set to try and catch lingering raw stdio calls. |
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| 127 | This is a known issue with some non UNIX ports which still use |
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| 128 | "native" stdio features. |
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| 129 | */ |
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| 130 | #ifndef PERLIO_NOT_STDIO |
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| 131 | #define PERLIO_NOT_STDIO 1 |
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| 132 | #endif |
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| 133 | #else |
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| 134 | #ifndef PERLIO_NOT_STDIO |
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| 135 | #define PERLIO_NOT_STDIO 0 |
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| 136 | #endif |
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| 137 | #endif |
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| 138 | |
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| 139 | #ifdef PERLIO_NOT_STDIO |
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| 140 | #if PERLIO_NOT_STDIO |
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| 141 | /* |
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| 142 | * PERLIO_NOT_STDIO #define'd as 1 |
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| 143 | * Case 1: Strong denial of stdio - make all stdio calls (we can think of) errors |
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| 144 | */ |
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| 145 | #include "nostdio.h" |
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| 146 | #else /* if PERLIO_NOT_STDIO */ |
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| 147 | /* |
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| 148 | * PERLIO_NOT_STDIO #define'd as 0 |
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| 149 | * Case 2: Declares that both PerlIO and stdio can be used |
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| 150 | */ |
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| 151 | #endif /* if PERLIO_NOT_STDIO */ |
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| 152 | #else /* ifdef PERLIO_NOT_STDIO */ |
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| 153 | /* |
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| 154 | * PERLIO_NOT_STDIO not defined |
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| 155 | * Case 3: Try and fake stdio calls as PerlIO calls |
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| 156 | */ |
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| 157 | #include "fakesdio.h" |
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| 158 | #endif /* ifndef PERLIO_NOT_STDIO */ |
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| 159 | #endif /* PERLIO_IS_STDIO */ |
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| 160 | |
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| 161 | #define specialCopIO(sv) ((sv) == Nullsv) |
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| 162 | |
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| 163 | /* ----------- fill in things that have not got #define'd ---------- */ |
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| 164 | |
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| 165 | #ifndef Fpos_t |
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| 166 | #define Fpos_t Off_t |
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| 167 | #endif |
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| 168 | |
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| 169 | #ifndef EOF |
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| 170 | #define EOF (-1) |
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| 171 | #endif |
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| 172 | |
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| 173 | /* This is to catch case with no stdio */ |
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| 174 | #ifndef BUFSIZ |
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| 175 | #define BUFSIZ 1024 |
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| 176 | #endif |
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| 177 | |
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| 178 | #ifndef SEEK_SET |
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| 179 | #define SEEK_SET 0 |
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| 180 | #endif |
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| 181 | |
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| 182 | #ifndef SEEK_CUR |
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| 183 | #define SEEK_CUR 1 |
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| 184 | #endif |
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| 185 | |
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| 186 | #ifndef SEEK_END |
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| 187 | #define SEEK_END 2 |
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| 188 | #endif |
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| 189 | |
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| 190 | #define PERLIO_DUP_CLONE 1 |
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| 191 | #define PERLIO_DUP_FD 2 |
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| 192 | |
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| 193 | /* --------------------- Now prototypes for functions --------------- */ |
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| 194 | |
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| 195 | START_EXTERN_C |
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| 196 | #ifndef NEXT30_NO_ATTRIBUTE |
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| 197 | #ifndef HASATTRIBUTE /* disable GNU-cc attribute checking? */ |
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| 198 | #ifdef __attribute__ /* Avoid possible redefinition errors */ |
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| 199 | #undef __attribute__ |
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| 200 | #endif |
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| 201 | #define __attribute__(attr) |
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| 202 | #endif |
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| 203 | #endif |
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| 204 | #ifndef PerlIO_init |
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| 205 | extern void PerlIO_init(pTHX); |
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| 206 | #endif |
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| 207 | #ifndef PerlIO_stdoutf |
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| 208 | extern int PerlIO_stdoutf(const char *, ...) |
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| 209 | __attribute__ ((__format__(__printf__, 1, 2))); |
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| 210 | #endif |
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| 211 | #ifndef PerlIO_puts |
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| 212 | extern int PerlIO_puts(PerlIO *, const char *); |
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| 213 | #endif |
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| 214 | #ifndef PerlIO_open |
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| 215 | extern PerlIO *PerlIO_open(const char *, const char *); |
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| 216 | #endif |
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| 217 | #ifndef PerlIO_openn |
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| 218 | extern PerlIO *PerlIO_openn(pTHX_ const char *layers, const char *mode, |
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| 219 | int fd, int imode, int perm, PerlIO *old, |
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| 220 | int narg, SV **arg); |
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| 221 | #endif |
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| 222 | #ifndef PerlIO_eof |
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| 223 | extern int PerlIO_eof(PerlIO *); |
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| 224 | #endif |
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| 225 | #ifndef PerlIO_error |
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| 226 | extern int PerlIO_error(PerlIO *); |
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| 227 | #endif |
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| 228 | #ifndef PerlIO_clearerr |
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| 229 | extern void PerlIO_clearerr(PerlIO *); |
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| 230 | #endif |
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| 231 | #ifndef PerlIO_getc |
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| 232 | extern int PerlIO_getc(PerlIO *); |
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| 233 | #endif |
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| 234 | #ifndef PerlIO_putc |
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| 235 | extern int PerlIO_putc(PerlIO *, int); |
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| 236 | #endif |
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| 237 | #ifndef PerlIO_ungetc |
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| 238 | extern int PerlIO_ungetc(PerlIO *, int); |
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| 239 | #endif |
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| 240 | #ifndef PerlIO_fdopen |
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| 241 | extern PerlIO *PerlIO_fdopen(int, const char *); |
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| 242 | #endif |
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| 243 | #ifndef PerlIO_importFILE |
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| 244 | extern PerlIO *PerlIO_importFILE(FILE *, const char *); |
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| 245 | #endif |
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| 246 | #ifndef PerlIO_exportFILE |
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| 247 | extern FILE *PerlIO_exportFILE(PerlIO *, const char *); |
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| 248 | #endif |
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| 249 | #ifndef PerlIO_findFILE |
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| 250 | extern FILE *PerlIO_findFILE(PerlIO *); |
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| 251 | #endif |
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| 252 | #ifndef PerlIO_releaseFILE |
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| 253 | extern void PerlIO_releaseFILE(PerlIO *, FILE *); |
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| 254 | #endif |
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| 255 | #ifndef PerlIO_read |
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| 256 | extern SSize_t PerlIO_read(PerlIO *, void *, Size_t); |
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| 257 | #endif |
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| 258 | #ifndef PerlIO_unread |
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| 259 | extern SSize_t PerlIO_unread(PerlIO *, const void *, Size_t); |
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| 260 | #endif |
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| 261 | #ifndef PerlIO_write |
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| 262 | extern SSize_t PerlIO_write(PerlIO *, const void *, Size_t); |
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| 263 | #endif |
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| 264 | #ifndef PerlIO_setlinebuf |
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| 265 | extern void PerlIO_setlinebuf(PerlIO *); |
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| 266 | #endif |
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| 267 | #ifndef PerlIO_printf |
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| 268 | extern int PerlIO_printf(PerlIO *, const char *, ...) |
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| 269 | __attribute__ ((__format__(__printf__, 2, 3))); |
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| 270 | #endif |
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| 271 | #ifndef PerlIO_sprintf |
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| 272 | extern int PerlIO_sprintf(char *, int, const char *, ...) |
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| 273 | __attribute__ ((__format__(__printf__, 3, 4))); |
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| 274 | #endif |
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| 275 | #ifndef PerlIO_vprintf |
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| 276 | extern int PerlIO_vprintf(PerlIO *, const char *, va_list); |
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| 277 | #endif |
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| 278 | #ifndef PerlIO_tell |
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| 279 | extern Off_t PerlIO_tell(PerlIO *); |
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| 280 | #endif |
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| 281 | #ifndef PerlIO_seek |
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| 282 | extern int PerlIO_seek(PerlIO *, Off_t, int); |
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| 283 | #endif |
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| 284 | #ifndef PerlIO_rewind |
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| 285 | extern void PerlIO_rewind(PerlIO *); |
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| 286 | #endif |
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| 287 | #ifndef PerlIO_has_base |
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| 288 | extern int PerlIO_has_base(PerlIO *); |
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| 289 | #endif |
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| 290 | #ifndef PerlIO_has_cntptr |
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| 291 | extern int PerlIO_has_cntptr(PerlIO *); |
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| 292 | #endif |
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| 293 | #ifndef PerlIO_fast_gets |
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| 294 | extern int PerlIO_fast_gets(PerlIO *); |
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| 295 | #endif |
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| 296 | #ifndef PerlIO_canset_cnt |
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| 297 | extern int PerlIO_canset_cnt(PerlIO *); |
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| 298 | #endif |
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| 299 | #ifndef PerlIO_get_ptr |
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| 300 | extern STDCHAR *PerlIO_get_ptr(PerlIO *); |
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| 301 | #endif |
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| 302 | #ifndef PerlIO_get_cnt |
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| 303 | extern int PerlIO_get_cnt(PerlIO *); |
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| 304 | #endif |
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| 305 | #ifndef PerlIO_set_cnt |
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| 306 | extern void PerlIO_set_cnt(PerlIO *, int); |
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| 307 | #endif |
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| 308 | #ifndef PerlIO_set_ptrcnt |
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| 309 | extern void PerlIO_set_ptrcnt(PerlIO *, STDCHAR *, int); |
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| 310 | #endif |
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| 311 | #ifndef PerlIO_get_base |
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| 312 | extern STDCHAR *PerlIO_get_base(PerlIO *); |
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| 313 | #endif |
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| 314 | #ifndef PerlIO_get_bufsiz |
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| 315 | extern int PerlIO_get_bufsiz(PerlIO *); |
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| 316 | #endif |
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| 317 | #ifndef PerlIO_tmpfile |
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| 318 | extern PerlIO *PerlIO_tmpfile(void); |
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| 319 | #endif |
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| 320 | #ifndef PerlIO_stdin |
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| 321 | extern PerlIO *PerlIO_stdin(void); |
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| 322 | #endif |
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| 323 | #ifndef PerlIO_stdout |
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| 324 | extern PerlIO *PerlIO_stdout(void); |
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| 325 | #endif |
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| 326 | #ifndef PerlIO_stderr |
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| 327 | extern PerlIO *PerlIO_stderr(void); |
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| 328 | #endif |
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| 329 | #ifndef PerlIO_getpos |
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| 330 | extern int PerlIO_getpos(PerlIO *, SV *); |
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| 331 | #endif |
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| 332 | #ifndef PerlIO_setpos |
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| 333 | extern int PerlIO_setpos(PerlIO *, SV *); |
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| 334 | #endif |
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| 335 | #ifndef PerlIO_fdupopen |
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| 336 | extern PerlIO *PerlIO_fdupopen(pTHX_ PerlIO *, CLONE_PARAMS *, int); |
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| 337 | #endif |
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| 338 | #if !defined(PerlIO_modestr) && !defined(PERLIO_IS_STDIO) |
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| 339 | extern char *PerlIO_modestr(PerlIO *, char *buf); |
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| 340 | #endif |
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| 341 | #ifndef PerlIO_isutf8 |
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| 342 | extern int PerlIO_isutf8(PerlIO *); |
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| 343 | #endif |
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| 344 | #ifndef PerlIO_apply_layers |
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| 345 | extern int PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, |
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| 346 | const char *names); |
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| 347 | #endif |
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| 348 | #ifndef PerlIO_binmode |
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| 349 | extern int PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int omode, |
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| 350 | const char *names); |
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| 351 | #endif |
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| 352 | #ifndef PerlIO_getname |
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| 353 | extern char *PerlIO_getname(PerlIO *, char *); |
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| 354 | #endif |
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| 355 | |
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| 356 | extern void PerlIO_destruct(pTHX); |
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| 357 | |
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| 358 | extern int PerlIO_intmode2str(int rawmode, char *mode, int *writing); |
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| 359 | |
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| 360 | #ifdef PERLIO_LAYERS |
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| 361 | extern void PerlIO_cleanup(pTHX); |
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| 362 | |
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| 363 | extern void PerlIO_debug(const char *fmt, ...); |
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| 364 | typedef struct PerlIO_list_s PerlIO_list_t; |
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| 365 | |
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| 366 | |
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| 367 | #endif |
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| 368 | |
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| 369 | END_EXTERN_C |
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| 370 | #endif /* _PERLIO_H */ |
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