BOUND regex opcodes (\b, \B) could try to scan zero length UTF-8.
[p5sagit/p5-mst-13.2.git] / perliol.h
CommitLineData
76ced9ad 1#ifndef _PERLIOL_H
2#define _PERLIOL_H
3
4struct _PerlIO_funcs
5{
6 char * name;
7 Size_t size;
8 IV kind;
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);
25 IV (*Eof)(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);
35};
36
f5b9d040 37/*--------------------------------------------------------------------------------------*/
38/* Kind values */
39#define PERLIO_K_RAW 0x00000001
40#define PERLIO_K_BUFFERED 0x00000002
41#define PERLIO_K_CANCRLF 0x00000004
42
43/*--------------------------------------------------------------------------------------*/
76ced9ad 44struct _PerlIO
45{
46 PerlIOl * next; /* Lower layer */
47 PerlIO_funcs * tab; /* Functions for this layer */
48 IV flags; /* Various flags for state */
49};
50
51/*--------------------------------------------------------------------------------------*/
52
53/* Flag values */
54#define PERLIO_F_EOF 0x00010000
55#define PERLIO_F_CANWRITE 0x00020000
56#define PERLIO_F_CANREAD 0x00040000
57#define PERLIO_F_ERROR 0x00080000
58#define PERLIO_F_TRUNCATE 0x00100000
59#define PERLIO_F_APPEND 0x00200000
f5b9d040 60#define PERLIO_F_CRLF 0x00400000
76ced9ad 61#define PERLIO_F_UTF8 0x00800000
f5b9d040 62#define PERLIO_F_UNBUF 0x01000000
76ced9ad 63#define PERLIO_F_WRBUF 0x02000000
64#define PERLIO_F_RDBUF 0x04000000
f5b9d040 65#define PERLIO_F_LINEBUF 0x08000000
66#define PERLIO_F_TEMP 0x10000000
67#define PERLIO_F_OPEN 0x20000000
76ced9ad 68
69#define PerlIOBase(f) (*(f))
70#define PerlIOSelf(f,type) ((type *)PerlIOBase(f))
71#define PerlIONext(f) (&(PerlIOBase(f)->next))
72
73/*--------------------------------------------------------------------------------------*/
74
75extern PerlIO_funcs PerlIO_unix;
76extern PerlIO_funcs PerlIO_perlio;
77extern PerlIO_funcs PerlIO_stdio;
66ecd56b 78extern PerlIO_funcs PerlIO_crlf;
76ced9ad 79#ifdef HAS_MMAP
80extern PerlIO_funcs PerlIO_mmap;
81#endif
82
83extern PerlIO *PerlIO_allocate(void);
84
f5b9d040 85#if O_BINARY != O_TEXT
86#define PERLIO_STDTEXT "t"
87#else
88#define PERLIO_STDTEXT ""
89#endif
90
76ced9ad 91/*--------------------------------------------------------------------------------------*/
92/* Generic, or stub layer functions */
93
94extern IV PerlIOBase_fileno (PerlIO *f);
95extern IV PerlIOBase_pushed (PerlIO *f, const char *mode);
96extern IV PerlIOBase_popped (PerlIO *f);
97extern SSize_t PerlIOBase_unread (PerlIO *f, const void *vbuf, Size_t count);
98extern IV PerlIOBase_eof (PerlIO *f);
99extern IV PerlIOBase_error (PerlIO *f);
100extern void PerlIOBase_clearerr (PerlIO *f);
101extern IV PerlIOBase_flush (PerlIO *f);
102extern IV PerlIOBase_fill (PerlIO *f);
103extern IV PerlIOBase_close (PerlIO *f);
104extern void PerlIOBase_setlinebuf(PerlIO *f);
105
106extern IV PerlIOBase_noop_ok (PerlIO *f);
107extern IV PerlIOBase_noop_fail (PerlIO *f);
108
109/*--------------------------------------------------------------------------------------*/
110/* perlio buffer layer
111 As this is reasonably generic its struct and "methods" are declared here
112 so they can be used to "inherit" from it.
113*/
114
115typedef struct
116{
117 struct _PerlIO base; /* Base "class" info */
118 STDCHAR * buf; /* Start of buffer */
119 STDCHAR * end; /* End of valid part of buffer */
120 STDCHAR * ptr; /* Current position in buffer */
121 Off_t posn; /* Offset of buf into the file */
122 Size_t bufsiz; /* Real size of buffer */
123 IV oneword; /* Emergency buffer */
124} PerlIOBuf;
125
126extern PerlIO * PerlIOBuf_fdopen (PerlIO_funcs *self, int fd, const char *mode);
127extern PerlIO * PerlIOBuf_open (PerlIO_funcs *self, const char *path, const char *mode);
128extern int PerlIOBuf_reopen (const char *path, const char *mode, PerlIO *f);
129extern SSize_t PerlIOBuf_read (PerlIO *f, void *vbuf, Size_t count);
130extern SSize_t PerlIOBuf_unread (PerlIO *f, const void *vbuf, Size_t count);
131extern SSize_t PerlIOBuf_write (PerlIO *f, const void *vbuf, Size_t count);
132extern IV PerlIOBuf_seek (PerlIO *f, Off_t offset, int whence);
133extern Off_t PerlIOBuf_tell (PerlIO *f);
134extern IV PerlIOBuf_close (PerlIO *f);
135extern IV PerlIOBuf_flush (PerlIO *f);
136extern IV PerlIOBuf_fill (PerlIO *f);
137extern void PerlIOBuf_setlinebuf (PerlIO *f);
138extern STDCHAR *PerlIOBuf_get_base (PerlIO *f);
139extern Size_t PerlIOBuf_bufsiz (PerlIO *f);
140extern STDCHAR *PerlIOBuf_get_ptr (PerlIO *f);
141extern SSize_t PerlIOBuf_get_cnt (PerlIO *f);
142extern void PerlIOBuf_set_ptrcnt (PerlIO *f, STDCHAR *ptr, SSize_t cnt);
143
144/*--------------------------------------------------------------------------------------*/
145
146#endif /* _PERLIOL_H */