| [3181] | 1 | /* perlio.h
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| 2 | *
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| 3 | * Copyright (C) 1996, 1997, 1999, 2000, 2001, 2002, 2003,
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| 4 | * by Larry Wall and others
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| 5 | *
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| 6 | * You may distribute under the terms of either the GNU General Public
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| 7 | * License or the Artistic License, as specified in the README file.
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| 8 | *
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| 9 | */
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| 10 |
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| 11 | #ifndef _PERLIO_H
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| 12 | #define _PERLIO_H
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| 13 | /*
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| 14 | Interface for perl to IO functions.
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| 15 | There is a hierarchy of Configure determined #define controls:
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| 16 | USE_STDIO - forces PerlIO_xxx() to be #define-d onto stdio functions.
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| 17 | This is used for x2p subdirectory and for conservative
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| 18 | builds - "just like perl5.00X used to be".
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| 19 | This dominates over the others.
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| 20 |
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| 21 | USE_PERLIO - The primary Configure variable that enables PerlIO.
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| 22 | If USE_PERLIO is _NOT_ set
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| 23 | then USE_STDIO above will be set to be conservative.
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| 24 | If USE_PERLIO is set
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| 25 | then there are two modes determined by USE_SFIO:
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| 26 |
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| 27 | USE_SFIO - If set causes PerlIO_xxx() to be #define-d onto sfio functions.
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| 28 | A backward compatability mode for some specialist applications.
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| 29 |
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| 30 | If USE_SFIO is not set then PerlIO_xxx() are real functions
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| 31 | defined in perlio.c which implement extra functionality
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| 32 | required for utf8 support.
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| 33 |
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| 34 | One further note - the table-of-functions scheme controlled
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| 35 | by PERL_IMPLICIT_SYS turns on USE_PERLIO so that iperlsys.h can
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| 36 | #define PerlIO_xxx() to go via the function table, without having
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| 37 | to #undef them from (say) stdio forms.
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| 38 |
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| 39 | */
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| 40 |
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| 41 | #if defined(PERL_IMPLICIT_SYS)
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| 42 | #ifndef USE_PERLIO
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| 43 | #ifndef NETWARE
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| 44 | /* # define USE_PERLIO */
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| 45 | #endif
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| 46 | #endif
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| 47 | #endif
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| 48 |
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| 49 | #ifndef USE_PERLIO
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| 50 | # define USE_STDIO
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| 51 | #endif
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| 52 |
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| 53 | #ifdef USE_STDIO
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| 54 | # ifndef PERLIO_IS_STDIO
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| 55 | # define PERLIO_IS_STDIO
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| 56 | # endif
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| 57 | #endif
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| 58 |
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| 59 | /* -------------------- End of Configure controls ---------------------------- */
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| 60 |
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| 61 | /*
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| 62 | * Although we may not want stdio to be used including <stdio.h> here
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| 63 | * avoids issues where stdio.h has strange side effects
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| 64 | */
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| 65 | #include <stdio.h>
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| 66 |
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| 67 | #ifdef __BEOS__
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| 68 | int fseeko(FILE *stream, off_t offset, int whence);
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| 69 | off_t ftello(FILE *stream);
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| 70 | #endif
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| 71 |
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| 72 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FTELLO) && !defined(USE_FTELL64)
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| 73 | #define ftell ftello
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| 74 | #endif
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| 75 |
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| 76 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FSEEKO) && !defined(USE_FSEEK64)
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