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#ifndef _PERLIOL_H
#define _PERLIOL_H
struct _PerlIO_funcs
{
char * name;
Size_t size;
IV kind;
IV (*Fileno)(PerlIO *f);
PerlIO * (*Fdopen)(PerlIO_funcs *tab, int fd, const char *mode);
PerlIO * (*Open)(PerlIO_funcs *tab, const char *path, const char *mode);
int (*Reopen)(const char *path, const char *mode, PerlIO *f);
IV (*Pushed)(PerlIO *f,const char *mode);
IV (*Popped)(PerlIO *f);
/* Unix-like functions - cf sfio line disciplines */
SSize_t (*Read)(PerlIO *f, void *vbuf, Size_t count);
SSize_t (*Unread)(PerlIO *f, const void *vbuf, Size_t count);
SSize_t (*Write)(PerlIO *f, const void *vbuf, Size_t count);
IV (*Seek)(PerlIO *f, Off_t offset, int whence);
Off_t (*Tell)(PerlIO *f);
IV (*Close)(PerlIO *f);
/* Stdio-like buffered IO functions */
IV (*Flush)(PerlIO *f);
IV (*Fill)(PerlIO *f);
IV (*Eof)(PerlIO *f);
IV (*Error)(PerlIO *f);
void (*Clearerr)(PerlIO *f);
void (*Setlinebuf)(PerlIO *f);
/* Perl's snooping functions */
STDCHAR * (*Get_base)(PerlIO *f);
Size_t (*Get_bufsiz)(PerlIO *f);
STDCHAR * (*Get_ptr)(PerlIO *f);
SSize_t (*Get_cnt)(PerlIO *f);
void (*Set_ptrcnt)(PerlIO *f,STDCHAR *ptr,SSize_t cnt);
};
struct _PerlIO
{
PerlIOl * next; /* Lower layer */
PerlIO_funcs * tab; /* Functions for this layer */
IV flags; /* Various flags for state */
};
/*--------------------------------------------------------------------------------------*/
/* Flag values */
#define PERLIO_F_EOF 0x00010000
#define PERLIO_F_CANWRITE 0x00020000
#define PERLIO_F_CANREAD 0x00040000
#define PERLIO_F_ERROR 0x00080000
#define PERLIO_F_TRUNCATE 0x00100000
#define PERLIO_F_APPEND 0x00200000
#define PERLIO_F_BINARY 0x00400000
#define PERLIO_F_UTF8 0x00800000
#define PERLIO_F_LINEBUF 0x01000000
#define PERLIO_F_WRBUF 0x02000000
#define PERLIO_F_RDBUF 0x04000000
#define PERLIO_F_TEMP 0x08000000
#define PERLIO_F_OPEN 0x10000000
#define PerlIOBase(f) (*(f))
#define PerlIOSelf(f,type) ((type *)PerlIOBase(f))
#define PerlIONext(f) (&(PerlIOBase(f)->next))
/*--------------------------------------------------------------------------------------*/
extern PerlIO_funcs PerlIO_unix;
extern PerlIO_funcs PerlIO_perlio;
extern PerlIO_funcs PerlIO_stdio;
#ifdef HAS_MMAP
extern PerlIO_funcs PerlIO_mmap;
#endif
extern PerlIO *PerlIO_allocate(void);
/*--------------------------------------------------------------------------------------*/
/* Generic, or stub layer functions */
extern IV PerlIOBase_fileno (PerlIO *f);
extern IV PerlIOBase_pushed (PerlIO *f, const char *mode);
extern IV PerlIOBase_popped (PerlIO *f);
extern SSize_t PerlIOBase_unread (PerlIO *f, const void *vbuf, Size_t count);
extern IV PerlIOBase_eof (PerlIO *f);
extern IV PerlIOBase_error (PerlIO *f);
extern void PerlIOBase_clearerr (PerlIO *f);
extern IV PerlIOBase_flush (PerlIO *f);
extern IV PerlIOBase_fill (PerlIO *f);
extern IV PerlIOBase_close (PerlIO *f);
extern void PerlIOBase_setlinebuf(PerlIO *f);
extern IV PerlIOBase_noop_ok (PerlIO *f);
extern IV PerlIOBase_noop_fail (PerlIO *f);
/*--------------------------------------------------------------------------------------*/
/* perlio buffer layer
As this is reasonably generic its struct and "methods" are declared here
so they can be used to "inherit" from it.
*/
typedef struct
{
struct _PerlIO base; /* Base "class" info */
STDCHAR * buf; /* Start of buffer */
STDCHAR * end; /* End of valid part of buffer */
STDCHAR * ptr; /* Current position in buffer */
Off_t posn; /* Offset of buf into the file */
Size_t bufsiz; /* Real size of buffer */
IV oneword; /* Emergency buffer */
} PerlIOBuf;
extern PerlIO * PerlIOBuf_fdopen (PerlIO_funcs *self, int fd, const char *mode);
extern PerlIO * PerlIOBuf_open (PerlIO_funcs *self, const char *path, const char *mode);
extern int PerlIOBuf_reopen (const char *path, const char *mode, PerlIO *f);
extern SSize_t PerlIOBuf_read (PerlIO *f, void *vbuf, Size_t count);
extern SSize_t PerlIOBuf_unread (PerlIO *f, const void *vbuf, Size_t count);
extern SSize_t PerlIOBuf_write (PerlIO *f, const void *vbuf, Size_t count);
extern IV PerlIOBuf_seek (PerlIO *f, Off_t offset, int whence);
extern Off_t PerlIOBuf_tell (PerlIO *f);
extern IV PerlIOBuf_close (PerlIO *f);
extern IV PerlIOBuf_flush (PerlIO *f);
extern IV PerlIOBuf_fill (PerlIO *f);
extern void PerlIOBuf_setlinebuf (PerlIO *f);
extern STDCHAR *PerlIOBuf_get_base (PerlIO *f);
extern Size_t PerlIOBuf_bufsiz (PerlIO *f);
extern STDCHAR *PerlIOBuf_get_ptr (PerlIO *f);
extern SSize_t PerlIOBuf_get_cnt (PerlIO *f);
extern void PerlIOBuf_set_ptrcnt (PerlIO *f, STDCHAR *ptr, SSize_t cnt);
/*--------------------------------------------------------------------------------------*/
#endif /* _PERLIOL_H */
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