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root |
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/* perlio.h |
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* |
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* Copyright (C) 1996, 1997, 1999, 2000, 2001, 2002, 2003, |
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* by Larry Wall and others |
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* |
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* You may distribute under the terms of either the GNU General Public |
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* License or the Artistic License, as specified in the README file. |
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* |
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*/ |
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#ifndef _PERLIO_H |
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#define _PERLIO_H |
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/* |
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Interface for perl to IO functions. |
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There is a hierarchy of Configure determined #define controls: |
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USE_STDIO - forces PerlIO_xxx() to be #define-d onto stdio functions. |
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This is used for x2p subdirectory and for conservative |
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builds - "just like perl5.00X used to be". |
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This dominates over the others. |
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USE_PERLIO - The primary Configure variable that enables PerlIO. |
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If USE_PERLIO is _NOT_ set |
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then USE_STDIO above will be set to be conservative. |
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If USE_PERLIO is set |
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then there are two modes determined by USE_SFIO: |
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USE_SFIO - If set causes PerlIO_xxx() to be #define-d onto sfio functions. |
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A backward compatability mode for some specialist applications. |
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If USE_SFIO is not set then PerlIO_xxx() are real functions |
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defined in perlio.c which implement extra functionality |
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required for utf8 support. |
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One further note - the table-of-functions scheme controlled |
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by PERL_IMPLICIT_SYS turns on USE_PERLIO so that iperlsys.h can |
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#define PerlIO_xxx() to go via the function table, without having |
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to #undef them from (say) stdio forms. |
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*/ |
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#if defined(PERL_IMPLICIT_SYS) |
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#ifndef USE_PERLIO |
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#ifndef NETWARE |
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/* # define USE_PERLIO */ |
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#endif |
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#endif |
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#endif |
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#ifndef USE_PERLIO |
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# define USE_STDIO |
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#endif |
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#ifdef USE_STDIO |
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# ifndef PERLIO_IS_STDIO |
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# define PERLIO_IS_STDIO |
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# endif |
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#endif |
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/* -------------------- End of Configure controls ---------------------------- */ |
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/* |
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* Although we may not want stdio to be used including <stdio.h> here |
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* avoids issues where stdio.h has strange side effects |
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*/ |
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#include <stdio.h> |
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#ifdef __BEOS__ |
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int fseeko(FILE *stream, off_t offset, int whence); |
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off_t ftello(FILE *stream); |
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#endif |
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#if defined(USE_64_BIT_STDIO) && defined(HAS_FTELLO) && !defined(USE_FTELL64) |
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#define ftell ftello |
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#endif |
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#if defined(USE_64_BIT_STDIO) && defined(HAS_FSEEKO) && !defined(USE_FSEEK64) |
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#define fseek fseeko |
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#endif |
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/* BS2000 includes are sometimes a bit non standard :-( */ |
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#if defined(POSIX_BC) && defined(O_BINARY) && !defined(O_TEXT) |
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#undef O_BINARY |
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#endif |
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#ifdef PERLIO_IS_STDIO |
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/* #define PerlIO_xxxx() as equivalent stdio function */ |
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#include "perlsdio.h" |
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#else /* PERLIO_IS_STDIO */ |
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#ifdef USE_SFIO |
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/* #define PerlIO_xxxx() as equivalent sfio function */ |
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#include "perlsfio.h" |
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#endif /* USE_SFIO */ |
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#endif /* PERLIO_IS_STDIO */ |
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#ifndef PerlIO |
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/* ----------- PerlIO implementation ---------- */ |
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/* PerlIO not #define-d to something else - define the implementation */ |
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typedef struct _PerlIO PerlIOl; |
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typedef struct _PerlIO_funcs PerlIO_funcs; |
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typedef PerlIOl *PerlIO; |
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#define PerlIO PerlIO |
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#define PERLIO_LAYERS 1 |
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extern void PerlIO_define_layer(pTHX_ PerlIO_funcs *tab); |
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extern PerlIO_funcs *PerlIO_find_layer(pTHX_ const char *name, STRLEN len, |
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int load); |
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extern PerlIO *PerlIO_push(pTHX_ PerlIO *f, PerlIO_funcs *tab, |
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const char *mode, SV *arg); |
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extern void PerlIO_pop(pTHX_ PerlIO *f); |
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extern AV* PerlIO_get_layers(pTHX_ PerlIO *f); |
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extern void PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param); |
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#endif /* PerlIO */ |
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/* ----------- End of implementation choices ---------- */ |
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#ifndef PERLIO_IS_STDIO |
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/* Not using stdio _directly_ as PerlIO */ |
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/* We now need to determine what happens if source trys to use stdio. |
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* There are three cases based on PERLIO_NOT_STDIO which XS code |
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* can set how it wants. |
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*/ |
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#ifdef PERL_CORE |
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/* Make a choice for perl core code |
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- currently this is set to try and catch lingering raw stdio calls. |
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This is a known issue with some non UNIX ports which still use |
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"native" stdio features. |
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*/ |
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#ifndef PERLIO_NOT_STDIO |
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#define PERLIO_NOT_STDIO 1 |
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#endif |
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#else |
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#ifndef PERLIO_NOT_STDIO |
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#define PERLIO_NOT_STDIO 0 |
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#endif |
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#endif |
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#ifdef PERLIO_NOT_STDIO |
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#if PERLIO_NOT_STDIO |
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/* |
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* PERLIO_NOT_STDIO #define'd as 1 |
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* Case 1: Strong denial of stdio - make all stdio calls (we can think of) errors |
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*/ |
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#include "nostdio.h" |
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#else /* if PERLIO_NOT_STDIO */ |
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/* |
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* PERLIO_NOT_STDIO #define'd as 0 |
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* Case 2: Declares that both PerlIO and stdio can be used |
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*/ |
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#endif /* if PERLIO_NOT_STDIO */ |
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#else /* ifdef PERLIO_NOT_STDIO */ |
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/* |
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* PERLIO_NOT_STDIO not defined |
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* Case 3: Try and fake stdio calls as PerlIO calls |
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*/ |
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#include "fakesdio.h" |
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#endif /* ifndef PERLIO_NOT_STDIO */ |
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#endif /* PERLIO_IS_STDIO */ |
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#define specialCopIO(sv) ((sv) == Nullsv) |
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/* ----------- fill in things that have not got #define'd ---------- */ |
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#ifndef Fpos_t |
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#define Fpos_t Off_t |
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#endif |
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#ifndef EOF |
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#define EOF (-1) |
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#endif |
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/* This is to catch case with no stdio */ |
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#ifndef BUFSIZ |
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#define BUFSIZ 1024 |
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#endif |
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#ifndef SEEK_SET |
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#define SEEK_SET 0 |
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#endif |
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#ifndef SEEK_CUR |
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#define SEEK_CUR 1 |
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#endif |
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#ifndef SEEK_END |
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#define SEEK_END 2 |
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#endif |
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#define PERLIO_DUP_CLONE 1 |
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#define PERLIO_DUP_FD 2 |
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/* --------------------- Now prototypes for functions --------------- */ |
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START_EXTERN_C |
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#ifndef __attribute__format__ |
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#ifdef CHECK_FORMAT |
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#define __attribute__format__(x,y,z) __attribute__((__format__(x,y,z))) |
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#else |
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#define __attribute__format__(x,y,z) |
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#endif |
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#endif |
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#ifndef NEXT30_NO_ATTRIBUTE |
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#ifndef HASATTRIBUTE /* disable GNU-cc attribute checking? */ |
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#ifdef __attribute__ /* Avoid possible redefinition errors */ |
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#undef __attribute__ |
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#endif |
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#define __attribute__(attr) |
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#endif |
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#endif |
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#ifndef PerlIO_init |
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extern void PerlIO_init(pTHX); |
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#endif |
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#ifndef PerlIO_stdoutf |
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extern int PerlIO_stdoutf(const char *, ...) |
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__attribute__format__(__printf__, 1, 2); |
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#endif |
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#ifndef PerlIO_puts |
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extern int PerlIO_puts(PerlIO *, const char *); |
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#endif |
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#ifndef PerlIO_open |
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extern PerlIO *PerlIO_open(const char *, const char *); |
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#endif |
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#ifndef PerlIO_openn |
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extern PerlIO *PerlIO_openn(pTHX_ const char *layers, const char *mode, |
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int fd, int imode, int perm, PerlIO *old, |
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int narg, SV **arg); |
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#endif |
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#ifndef PerlIO_eof |
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extern int PerlIO_eof(PerlIO *); |
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#endif |
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#ifndef PerlIO_error |
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extern int PerlIO_error(PerlIO *); |
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#endif |
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#ifndef PerlIO_clearerr |
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extern void PerlIO_clearerr(PerlIO *); |
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#endif |
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#ifndef PerlIO_getc |
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extern int PerlIO_getc(PerlIO *); |
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#endif |
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#ifndef PerlIO_putc |
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extern int PerlIO_putc(PerlIO *, int); |
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#endif |
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#ifndef PerlIO_ungetc |
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extern int PerlIO_ungetc(PerlIO *, int); |
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#endif |
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#ifndef PerlIO_fdopen |
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extern PerlIO *PerlIO_fdopen(int, const char *); |
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#endif |
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#ifndef PerlIO_importFILE |
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extern PerlIO *PerlIO_importFILE(FILE *, const char *); |
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#endif |
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#ifndef PerlIO_exportFILE |
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extern FILE *PerlIO_exportFILE(PerlIO *, const char *); |
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#endif |
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#ifndef PerlIO_findFILE |
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extern FILE *PerlIO_findFILE(PerlIO *); |
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#endif |
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#ifndef PerlIO_releaseFILE |
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extern void PerlIO_releaseFILE(PerlIO *, FILE *); |
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#endif |
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#ifndef PerlIO_read |
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extern SSize_t PerlIO_read(PerlIO *, void *, Size_t); |
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#endif |
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#ifndef PerlIO_unread |
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extern SSize_t PerlIO_unread(PerlIO *, const void *, Size_t); |
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#endif |
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#ifndef PerlIO_write |
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extern SSize_t PerlIO_write(PerlIO *, const void *, Size_t); |
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#endif |
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#ifndef PerlIO_setlinebuf |
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extern void PerlIO_setlinebuf(PerlIO *); |
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#endif |
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#ifndef PerlIO_printf |
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extern int PerlIO_printf(PerlIO *, const char *, ...) |
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__attribute__format__(__printf__, 2, 3); |
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#endif |
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#ifndef PerlIO_sprintf |
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extern int PerlIO_sprintf(char *, int, const char *, ...) |
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__attribute__format__(__printf__, 3, 4); |
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#endif |
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#ifndef PerlIO_vprintf |
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extern int PerlIO_vprintf(PerlIO *, const char *, va_list); |
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#endif |
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#ifndef PerlIO_tell |
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extern Off_t PerlIO_tell(PerlIO *); |
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#endif |
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#ifndef PerlIO_seek |
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extern int PerlIO_seek(PerlIO *, Off_t, int); |
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#endif |
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#ifndef PerlIO_rewind |
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extern void PerlIO_rewind(PerlIO *); |
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#endif |
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#ifndef PerlIO_has_base |
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extern int PerlIO_has_base(PerlIO *); |
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#endif |
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#ifndef PerlIO_has_cntptr |
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extern int PerlIO_has_cntptr(PerlIO *); |
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#endif |
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#ifndef PerlIO_fast_gets |
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extern int PerlIO_fast_gets(PerlIO *); |
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#endif |
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#ifndef PerlIO_canset_cnt |
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extern int PerlIO_canset_cnt(PerlIO *); |
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#endif |
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#ifndef PerlIO_get_ptr |
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extern STDCHAR *PerlIO_get_ptr(PerlIO *); |
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#endif |
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#ifndef PerlIO_get_cnt |
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extern int PerlIO_get_cnt(PerlIO *); |
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#endif |
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#ifndef PerlIO_set_cnt |
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extern void PerlIO_set_cnt(PerlIO *, int); |
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#endif |
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#ifndef PerlIO_set_ptrcnt |
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extern void PerlIO_set_ptrcnt(PerlIO *, STDCHAR *, int); |
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#endif |
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#ifndef PerlIO_get_base |
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extern STDCHAR *PerlIO_get_base(PerlIO *); |
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#endif |
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#ifndef PerlIO_get_bufsiz |
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extern int PerlIO_get_bufsiz(PerlIO *); |
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#endif |
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#ifndef PerlIO_tmpfile |
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extern PerlIO *PerlIO_tmpfile(void); |
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#endif |
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#ifndef PerlIO_stdin |
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extern PerlIO *PerlIO_stdin(void); |
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#endif |
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#ifndef PerlIO_stdout |
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extern PerlIO *PerlIO_stdout(void); |
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#endif |
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#ifndef PerlIO_stderr |
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extern PerlIO *PerlIO_stderr(void); |
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#endif |
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#ifndef PerlIO_getpos |
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extern int PerlIO_getpos(PerlIO *, SV *); |
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#endif |
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#ifndef PerlIO_setpos |
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extern int PerlIO_setpos(PerlIO *, SV *); |
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#endif |
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#ifndef PerlIO_fdupopen |
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extern PerlIO *PerlIO_fdupopen(pTHX_ PerlIO *, CLONE_PARAMS *, int); |
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#endif |
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#if !defined(PerlIO_modestr) && !defined(PERLIO_IS_STDIO) |
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extern char *PerlIO_modestr(PerlIO *, char *buf); |
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#endif |
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#ifndef PerlIO_isutf8 |
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extern int PerlIO_isutf8(PerlIO *); |
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#endif |
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#ifndef PerlIO_apply_layers |
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extern int PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, |
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const char *names); |
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#endif |
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#ifndef PerlIO_binmode |
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extern int PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int omode, |
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const char *names); |
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#endif |
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#ifndef PerlIO_getname |
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extern char *PerlIO_getname(PerlIO *, char *); |
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#endif |
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extern void PerlIO_destruct(pTHX); |
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extern int PerlIO_intmode2str(int rawmode, char *mode, int *writing); |
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#ifdef PERLIO_LAYERS |
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extern void PerlIO_cleanup(pTHX); |
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extern void PerlIO_debug(const char *fmt, ...); |
| 373 |
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typedef struct PerlIO_list_s PerlIO_list_t; |
| 374 |
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| 375 |
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| 376 |
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#endif |
| 377 |
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| 378 |
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END_EXTERN_C |
| 379 |
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#endif /* _PERLIO_H */ |
