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1 | #ifndef _PERLIOL_H |
2 | #define _PERLIOL_H |
3 | |
4 | struct _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 | |
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37 | /*--------------------------------------------------------------------------------------*/ |
38 | /* Kind values */ |
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39 | #define PERLIO_K_RAW 0x00000001 |
40 | #define PERLIO_K_BUFFERED 0x00000002 |
f5b9d040 |
41 | #define PERLIO_K_CANCRLF 0x00000004 |
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42 | #define PERLIO_K_FASTGETS 0x00000008 |
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43 | |
44 | /*--------------------------------------------------------------------------------------*/ |
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45 | struct _PerlIO |
46 | { |
47 | PerlIOl * next; /* Lower layer */ |
48 | PerlIO_funcs * tab; /* Functions for this layer */ |
49 | IV flags; /* Various flags for state */ |
50 | }; |
51 | |
52 | /*--------------------------------------------------------------------------------------*/ |
53 | |
54 | /* Flag values */ |
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55 | #define PERLIO_F_EOF 0x00000100 |
56 | #define PERLIO_F_CANWRITE 0x00000200 |
57 | #define PERLIO_F_CANREAD 0x00000400 |
58 | #define PERLIO_F_ERROR 0x00000800 |
59 | #define PERLIO_F_TRUNCATE 0x00001000 |
60 | #define PERLIO_F_APPEND 0x00002000 |
61 | #define PERLIO_F_CRLF 0x00004000 |
62 | #define PERLIO_F_UTF8 0x00008000 |
63 | #define PERLIO_F_UNBUF 0x00010000 |
64 | #define PERLIO_F_WRBUF 0x00020000 |
65 | #define PERLIO_F_RDBUF 0x00040000 |
66 | #define PERLIO_F_LINEBUF 0x00080000 |
67 | #define PERLIO_F_TEMP 0x00100000 |
68 | #define PERLIO_F_OPEN 0x00200000 |
69 | #define PERLIO_F_FASTGETS 0x00400000 |
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70 | |
71 | #define PerlIOBase(f) (*(f)) |
72 | #define PerlIOSelf(f,type) ((type *)PerlIOBase(f)) |
73 | #define PerlIONext(f) (&(PerlIOBase(f)->next)) |
74 | |
75 | /*--------------------------------------------------------------------------------------*/ |
76 | |
77 | extern PerlIO_funcs PerlIO_unix; |
78 | extern PerlIO_funcs PerlIO_perlio; |
79 | extern PerlIO_funcs PerlIO_stdio; |
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80 | extern PerlIO_funcs PerlIO_crlf; |
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81 | #ifdef HAS_MMAP |
82 | extern PerlIO_funcs PerlIO_mmap; |
83 | #endif |
84 | |
85 | extern PerlIO *PerlIO_allocate(void); |
86 | |
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87 | #if O_BINARY != O_TEXT |
88 | #define PERLIO_STDTEXT "t" |
89 | #else |
90 | #define PERLIO_STDTEXT "" |
91 | #endif |
92 | |
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93 | /*--------------------------------------------------------------------------------------*/ |
94 | /* Generic, or stub layer functions */ |
95 | |
96 | extern IV PerlIOBase_fileno (PerlIO *f); |
97 | extern IV PerlIOBase_pushed (PerlIO *f, const char *mode); |
98 | extern IV PerlIOBase_popped (PerlIO *f); |
99 | extern SSize_t PerlIOBase_unread (PerlIO *f, const void *vbuf, Size_t count); |
100 | extern IV PerlIOBase_eof (PerlIO *f); |
101 | extern IV PerlIOBase_error (PerlIO *f); |
102 | extern void PerlIOBase_clearerr (PerlIO *f); |
103 | extern IV PerlIOBase_flush (PerlIO *f); |
104 | extern IV PerlIOBase_fill (PerlIO *f); |
105 | extern IV PerlIOBase_close (PerlIO *f); |
106 | extern void PerlIOBase_setlinebuf(PerlIO *f); |
107 | |
108 | extern IV PerlIOBase_noop_ok (PerlIO *f); |
109 | extern IV PerlIOBase_noop_fail (PerlIO *f); |
110 | |
111 | /*--------------------------------------------------------------------------------------*/ |
112 | /* perlio buffer layer |
113 | As this is reasonably generic its struct and "methods" are declared here |
114 | so they can be used to "inherit" from it. |
115 | */ |
116 | |
117 | typedef struct |
118 | { |
119 | struct _PerlIO base; /* Base "class" info */ |
120 | STDCHAR * buf; /* Start of buffer */ |
121 | STDCHAR * end; /* End of valid part of buffer */ |
122 | STDCHAR * ptr; /* Current position in buffer */ |
123 | Off_t posn; /* Offset of buf into the file */ |
124 | Size_t bufsiz; /* Real size of buffer */ |
125 | IV oneword; /* Emergency buffer */ |
126 | } PerlIOBuf; |
127 | |
128 | extern PerlIO * PerlIOBuf_fdopen (PerlIO_funcs *self, int fd, const char *mode); |
129 | extern PerlIO * PerlIOBuf_open (PerlIO_funcs *self, const char *path, const char *mode); |
130 | extern int PerlIOBuf_reopen (const char *path, const char *mode, PerlIO *f); |
131 | extern SSize_t PerlIOBuf_read (PerlIO *f, void *vbuf, Size_t count); |
132 | extern SSize_t PerlIOBuf_unread (PerlIO *f, const void *vbuf, Size_t count); |
133 | extern SSize_t PerlIOBuf_write (PerlIO *f, const void *vbuf, Size_t count); |
134 | extern IV PerlIOBuf_seek (PerlIO *f, Off_t offset, int whence); |
135 | extern Off_t PerlIOBuf_tell (PerlIO *f); |
136 | extern IV PerlIOBuf_close (PerlIO *f); |
137 | extern IV PerlIOBuf_flush (PerlIO *f); |
138 | extern IV PerlIOBuf_fill (PerlIO *f); |
139 | extern void PerlIOBuf_setlinebuf (PerlIO *f); |
140 | extern STDCHAR *PerlIOBuf_get_base (PerlIO *f); |
141 | extern Size_t PerlIOBuf_bufsiz (PerlIO *f); |
142 | extern STDCHAR *PerlIOBuf_get_ptr (PerlIO *f); |
143 | extern SSize_t PerlIOBuf_get_cnt (PerlIO *f); |
144 | extern void PerlIOBuf_set_ptrcnt (PerlIO *f, STDCHAR *ptr, SSize_t cnt); |
145 | |
146 | /*--------------------------------------------------------------------------------------*/ |
147 | |
148 | #endif /* _PERLIOL_H */ |