9 IV (*Fileno)(PerlIO *f);
10 PerlIO * (*Fdopen)(PerlIO_funcs *tab, int fd, const char *mode);
11 PerlIO * (*Open)(PerlIO_funcs *tab, const char *path, const char *mode);
12 int (*Reopen)(const char *path, const char *mode, PerlIO *f);
13 IV (*Pushed)(PerlIO *f,const char *mode);
14 IV (*Popped)(PerlIO *f);
15 /* Unix-like functions - cf sfio line disciplines */
16 SSize_t (*Read)(PerlIO *f, void *vbuf, Size_t count);
17 SSize_t (*Unread)(PerlIO *f, const void *vbuf, Size_t count);
18 SSize_t (*Write)(PerlIO *f, const void *vbuf, Size_t count);
19 IV (*Seek)(PerlIO *f, Off_t offset, int whence);
20 Off_t (*Tell)(PerlIO *f);
21 IV (*Close)(PerlIO *f);
22 /* Stdio-like buffered IO functions */
23 IV (*Flush)(PerlIO *f);
24 IV (*Fill)(PerlIO *f);
26 IV (*Error)(PerlIO *f);
27 void (*Clearerr)(PerlIO *f);
28 void (*Setlinebuf)(PerlIO *f);
29 /* Perl's snooping functions */
30 STDCHAR * (*Get_base)(PerlIO *f);
31 Size_t (*Get_bufsiz)(PerlIO *f);
32 STDCHAR * (*Get_ptr)(PerlIO *f);
33 SSize_t (*Get_cnt)(PerlIO *f);
34 void (*Set_ptrcnt)(PerlIO *f,STDCHAR *ptr,SSize_t cnt);
39 PerlIOl * next; /* Lower layer */
40 PerlIO_funcs * tab; /* Functions for this layer */
41 IV flags; /* Various flags for state */
44 /*--------------------------------------------------------------------------------------*/
47 #define PERLIO_F_EOF 0x00010000
48 #define PERLIO_F_CANWRITE 0x00020000
49 #define PERLIO_F_CANREAD 0x00040000
50 #define PERLIO_F_ERROR 0x00080000
51 #define PERLIO_F_TRUNCATE 0x00100000
52 #define PERLIO_F_APPEND 0x00200000
53 #define PERLIO_F_BINARY 0x00400000
54 #define PERLIO_F_UTF8 0x00800000
55 #define PERLIO_F_LINEBUF 0x01000000
56 #define PERLIO_F_WRBUF 0x02000000
57 #define PERLIO_F_RDBUF 0x04000000
58 #define PERLIO_F_TEMP 0x08000000
59 #define PERLIO_F_OPEN 0x10000000
61 #define PerlIOBase(f) (*(f))
62 #define PerlIOSelf(f,type) ((type *)PerlIOBase(f))
63 #define PerlIONext(f) (&(PerlIOBase(f)->next))
65 /*--------------------------------------------------------------------------------------*/
67 extern PerlIO_funcs PerlIO_unix;
68 extern PerlIO_funcs PerlIO_perlio;
69 extern PerlIO_funcs PerlIO_stdio;
70 extern PerlIO_funcs PerlIO_crlf;
72 extern PerlIO_funcs PerlIO_mmap;
75 extern PerlIO *PerlIO_allocate(void);
77 /*--------------------------------------------------------------------------------------*/
78 /* Generic, or stub layer functions */
80 extern IV PerlIOBase_fileno (PerlIO *f);
81 extern IV PerlIOBase_pushed (PerlIO *f, const char *mode);
82 extern IV PerlIOBase_popped (PerlIO *f);
83 extern SSize_t PerlIOBase_unread (PerlIO *f, const void *vbuf, Size_t count);
84 extern IV PerlIOBase_eof (PerlIO *f);
85 extern IV PerlIOBase_error (PerlIO *f);
86 extern void PerlIOBase_clearerr (PerlIO *f);
87 extern IV PerlIOBase_flush (PerlIO *f);
88 extern IV PerlIOBase_fill (PerlIO *f);
89 extern IV PerlIOBase_close (PerlIO *f);
90 extern void PerlIOBase_setlinebuf(PerlIO *f);
92 extern IV PerlIOBase_noop_ok (PerlIO *f);
93 extern IV PerlIOBase_noop_fail (PerlIO *f);
95 /*--------------------------------------------------------------------------------------*/
96 /* perlio buffer layer
97 As this is reasonably generic its struct and "methods" are declared here
98 so they can be used to "inherit" from it.
103 struct _PerlIO base; /* Base "class" info */
104 STDCHAR * buf; /* Start of buffer */
105 STDCHAR * end; /* End of valid part of buffer */
106 STDCHAR * ptr; /* Current position in buffer */
107 Off_t posn; /* Offset of buf into the file */
108 Size_t bufsiz; /* Real size of buffer */
109 IV oneword; /* Emergency buffer */
112 extern PerlIO * PerlIOBuf_fdopen (PerlIO_funcs *self, int fd, const char *mode);
113 extern PerlIO * PerlIOBuf_open (PerlIO_funcs *self, const char *path, const char *mode);
114 extern int PerlIOBuf_reopen (const char *path, const char *mode, PerlIO *f);
115 extern SSize_t PerlIOBuf_read (PerlIO *f, void *vbuf, Size_t count);
116 extern SSize_t PerlIOBuf_unread (PerlIO *f, const void *vbuf, Size_t count);
117 extern SSize_t PerlIOBuf_write (PerlIO *f, const void *vbuf, Size_t count);
118 extern IV PerlIOBuf_seek (PerlIO *f, Off_t offset, int whence);
119 extern Off_t PerlIOBuf_tell (PerlIO *f);
120 extern IV PerlIOBuf_close (PerlIO *f);
121 extern IV PerlIOBuf_flush (PerlIO *f);
122 extern IV PerlIOBuf_fill (PerlIO *f);
123 extern void PerlIOBuf_setlinebuf (PerlIO *f);
124 extern STDCHAR *PerlIOBuf_get_base (PerlIO *f);
125 extern Size_t PerlIOBuf_bufsiz (PerlIO *f);
126 extern STDCHAR *PerlIOBuf_get_ptr (PerlIO *f);
127 extern SSize_t PerlIOBuf_get_cnt (PerlIO *f);
128 extern void PerlIOBuf_set_ptrcnt (PerlIO *f, STDCHAR *ptr, SSize_t cnt);
130 /*--------------------------------------------------------------------------------------*/
132 #endif /* _PERLIOL_H */