1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
#ifndef _PERLIOL_H
#define _PERLIOL_H
typedef struct {
PerlIO_funcs *funcs;
SV *arg;
} PerlIO_pair_t;
typedef struct {
IV refcnt;
IV cur;
IV len;
PerlIO_pair_t *array;
} PerlIO_list_t;
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,
PerlIO_list_t *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);
PerlIO *(*Dup) (pTHX_ PerlIO *f, PerlIO *o, clone_params *param);
/* 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 PERLIO_F_TTY 0x00800000
#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
#ifdef WIN32
EXT PerlIO_funcs PerlIO_win32;
#endif
extern PerlIO *PerlIO_allocate(pTHX);
extern SV *PerlIO_arg_fetch(PerlIO_list_t *av, IV n);
#define PerlIOArg PerlIO_arg_fetch(layers,n)
#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 PerlIO *PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, clone_params *param);
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_close(PerlIO *f);
extern void PerlIOBase_setlinebuf(PerlIO *f);
extern void PerlIOBase_flush_linebuf(void);
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,
PerlIO_list_t *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);
extern int PerlIOUnix_oflags(const char *mode);
/*--------------------------------------------------------------------------------------*/
#endif /* _PERLIOL_H */
|
