PerlIO #include and #ifdef re-work.

p4raw-id: //depot/perlio@7684

1 files changed, 131 insertions, 0 deletions

diff --git a/perliol.h b/perliol.h
new file mode 100644
index 0000000000..58fad634d6
--- /dev/null
+++ b/perliol.h
@@ -0,0 +1,131 @@
+#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 */