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#ifndef _PERLIOL_H
#define _PERLIOL_H
struct _PerlIO_funcs
{
char * name;
Size_t size;
IV kind;
IV (*Pushed)(PerlIO *f,const char *mode,SV *arg);
IV (*Popped)(PerlIO *f);
PerlIO * (*Open)(pTHX_ PerlIO_funcs *tab,
AV *layers, IV n,
const char *mode,
int fd, int imode, int perm,
PerlIO *old,
int narg, SV **args);
SV * (*Getarg)(PerlIO *f);
IV (*Fileno)(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);
};
/*--------------------------------------------------------------------------------------*/
/* Kind values */
#define PERLIO_K_RAW 0x00000001
#define PERLIO_K_BUFFERED 0x00000002
#define PERLIO_K_CANCRLF 0x00000004
#define PERLIO_K_FASTGETS 0x00000008
#define PERLIO_K_DUMMY 0x00000010
#define PERLIO_K_UTF8 0x00008000
#define PERLIO_K_DESTRUCT 0x00010000
/*--------------------------------------------------------------------------------------*/
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 0x00000100
#define PERLIO_F_CANWRITE 0x00000200
#define PERLIO_F_CANREAD 0x00000400
#define PERLIO_F_ERROR 0x00000800
#define PERLIO_F_TRUNCATE 0x00001000
#define PERLIO_F_APPEND 0x00002000
#define PERLIO_F_CRLF 0x00004000
#define PERLIO_F_UTF8 0x00008000
#define PERLIO_F_UNBUF 0x00010000
#define PERLIO_F_WRBUF 0x00020000
#define PERLIO_F_RDBUF 0x00040000
#define PERLIO_F_LINEBUF 0x00080000
#define PERLIO_F_TEMP 0x00100000
#define PERLIO_F_OPEN 0x00200000
#define PERLIO_F_FASTGETS 0x00400000
#define PerlIOBase(f) (*(f))
#define PerlIOSelf(f,type) ((type *)PerlIOBase(f))
#define PerlIONext(f) (&(PerlIOBase(f)->next))
/*--------------------------------------------------------------------------------------*/
/* Data exports - EXT rather than extern is needed for Cygwin */
EXT PerlIO_funcs PerlIO_unix;
EXT PerlIO_funcs PerlIO_perlio;
EXT PerlIO_funcs PerlIO_stdio;
EXT PerlIO_funcs PerlIO_crlf;
EXT PerlIO_funcs PerlIO_utf8;
EXT PerlIO_funcs PerlIO_byte;
EXT PerlIO_funcs PerlIO_raw;
EXT PerlIO_funcs PerlIO_pending;
#ifdef HAS_MMAP
EXT PerlIO_funcs PerlIO_mmap;
#endif
extern PerlIO *PerlIO_allocate(pTHX);
extern SV *PerlIO_arg_fetch(pTHX_ AV *av,IV n);
#define PerlIOArg PerlIO_arg_fetch(aTHX_ layers,n+1)
#if O_BINARY != O_TEXT
#define PERLIO_STDTEXT "t"
#else
#define PERLIO_STDTEXT ""
#endif
/*--------------------------------------------------------------------------------------*/
/* Generic, or stub layer functions */
extern IV PerlIOBase_fileno (PerlIO *f);
extern IV PerlIOBase_pushed (PerlIO *f, const char *mode,SV *arg);
extern IV PerlIOBase_popped (PerlIO *f);
extern SSize_t PerlIOBase_read (PerlIO *f, void *vbuf, Size_t count);
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_open (pTHX_ PerlIO_funcs *self, AV *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args);
extern IV PerlIOBuf_pushed (PerlIO *f, const char *mode,SV *arg);
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 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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