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