summaryrefslogtreecommitdiff
path: root/perliol.h
blob: 3bce866f490f41259fbbdcc8f9af30d491b60309 (plain)
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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
#ifndef _PERLIOL_H
#define _PERLIOL_H

typedef struct {
    PerlIO_funcs *funcs;
    SV *arg;
} PerlIO_pair_t;

struct PerlIO_list_s {
    IV refcnt;
    IV cur;
    IV len;
    PerlIO_pair_t *array;
};

struct _PerlIO_funcs {
    Size_t fsize;
    const char *name;
    Size_t size;
    U32 kind;
    IV (*Pushed) (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
    IV (*Popped) (pTHX_ 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);
    IV (*Binmode)(pTHX_ PerlIO *f);
    SV *(*Getarg) (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags);
    IV (*Fileno) (pTHX_ PerlIO *f);
    PerlIO *(*Dup) (pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
    /* Unix-like functions - cf sfio line disciplines */
     SSize_t(*Read) (pTHX_ PerlIO *f, void *vbuf, Size_t count);
     SSize_t(*Unread) (pTHX_ PerlIO *f, const void *vbuf, Size_t count);
     SSize_t(*Write) (pTHX_ PerlIO *f, const void *vbuf, Size_t count);
    IV (*Seek) (pTHX_ PerlIO *f, Off_t offset, int whence);
     Off_t(*Tell) (pTHX_ PerlIO *f);
    IV (*Close) (pTHX_ PerlIO *f);
    /* Stdio-like buffered IO functions */
    IV (*Flush) (pTHX_ PerlIO *f);
    IV (*Fill) (pTHX_ PerlIO *f);
    IV (*Eof) (pTHX_ PerlIO *f);
    IV (*Error) (pTHX_ PerlIO *f);
    void (*Clearerr) (pTHX_ PerlIO *f);
    void (*Setlinebuf) (pTHX_ PerlIO *f);
    /* Perl's snooping functions */
    STDCHAR *(*Get_base) (pTHX_ PerlIO *f);
     Size_t(*Get_bufsiz) (pTHX_ PerlIO *f);
    STDCHAR *(*Get_ptr) (pTHX_ PerlIO *f);
     SSize_t(*Get_cnt) (pTHX_ PerlIO *f);
    void (*Set_ptrcnt) (pTHX_ 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
#define PERLIO_K_MULTIARG	0x00020000

/*--------------------------------------------------------------------------------------*/
struct _PerlIO {
    PerlIOl *next;		/* Lower layer */
    PerlIO_funcs *tab;		/* Functions for this layer */
    U32 flags;			/* Various flags for state */
    PerlIOl *head;		/* our ultimate parent pointer */
};

/*--------------------------------------------------------------------------------------*/

/* 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 PERLIO_F_NOTREG         0x01000000   
#define PERLIO_F_CLEARED        0x02000000 /* layer cleared but not freed */

#define PerlIOBase(f)      (*(f))
#define PerlIOSelf(f,type) ((type *)PerlIOBase(f))
#define PerlIONext(f)      (&(PerlIOBase(f)->next))
#define PerlIOValid(f)     ((f) && *(f))

/*--------------------------------------------------------------------------------------*/
/* Data exports - EXTCONST rather than extern is needed for Cygwin */
#undef EXTPERLIO 
#ifdef PERLIO_FUNCS_CONST
#define EXTPERLIO EXTCONST
#else
#define EXTPERLIO EXT
#endif
EXTPERLIO PerlIO_funcs PerlIO_unix;
EXTPERLIO PerlIO_funcs PerlIO_perlio;
EXTPERLIO PerlIO_funcs PerlIO_stdio;
EXTPERLIO PerlIO_funcs PerlIO_crlf;
EXTPERLIO PerlIO_funcs PerlIO_utf8;
EXTPERLIO PerlIO_funcs PerlIO_byte;
EXTPERLIO PerlIO_funcs PerlIO_raw;
EXTPERLIO PerlIO_funcs PerlIO_pending;
#ifdef WIN32
EXTPERLIO PerlIO_funcs PerlIO_win32;
#endif
PERL_EXPORT_C PerlIO *PerlIO_allocate(pTHX);
PERL_EXPORT_C SV *PerlIO_arg_fetch(PerlIO_list_t *av, IV n);
#define PerlIOArg PerlIO_arg_fetch(layers,n)

#ifdef PERLIO_USING_CRLF
#define PERLIO_STDTEXT "t"
#else
#define PERLIO_STDTEXT ""
#endif

/*--------------------------------------------------------------------------------------*/
/* 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;

PERL_EXPORT_C int PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode,
		    PerlIO_list_t *layers, IV n, IV max);
PERL_EXPORT_C int PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names);
PERL_EXPORT_C PerlIO_funcs *PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def);


PERL_EXPORT_C SV *PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param);
PERL_EXPORT_C void PerlIO_cleantable(pTHX_ PerlIOl **tablep);
PERL_EXPORT_C SV * PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab);
PERL_EXPORT_C void PerlIO_default_buffer(pTHX_ PerlIO_list_t *av);
PERL_EXPORT_C void PerlIO_stdstreams(pTHX);
PERL_EXPORT_C int PerlIO__close(pTHX_ PerlIO *f);
PERL_EXPORT_C PerlIO_list_t * PerlIO_resolve_layers(pTHX_ const char *layers, const char *mode, int narg, SV **args);
PERL_EXPORT_C PerlIO_funcs * PerlIO_default_layer(pTHX_ I32 n);
PERL_EXPORT_C PerlIO_list_t * PerlIO_default_layers(pTHX);
PERL_EXPORT_C PerlIO * PerlIO_reopen(const char *path, const char *mode, PerlIO *f);
PERL_EXPORT_C int PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap)
                __attribute__format__(__printf__,3,0);

PERL_EXPORT_C PerlIO_list_t *PerlIO_list_alloc(pTHX);
PERL_EXPORT_C PerlIO_list_t *PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param);
PERL_EXPORT_C void PerlIO_list_free(pTHX_ PerlIO_list_t *list);
PERL_EXPORT_C void PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg);
PERL_EXPORT_C void PerlIO_list_free(pTHX_ PerlIO_list_t *list);

/* PerlIO_teardown doesn't need exporting, but the EXTERN_C is needed
 * for compiling as C++.  Must also match with what perl.h says. */
EXTERN_C void PerlIO_teardown(void);

/*--------------------------------------------------------------------------------------*/
/* Generic, or stub layer functions */

PERL_EXPORT_C IV        PerlIOBase_binmode(pTHX_ PerlIO *f);
PERL_EXPORT_C void      PerlIOBase_clearerr(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOBase_close(pTHX_ PerlIO *f);
PERL_EXPORT_C PerlIO *  PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
PERL_EXPORT_C IV        PerlIOBase_eof(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOBase_error(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOBase_fileno(pTHX_ PerlIO *f);
PERL_EXPORT_C void      PerlIOBase_flush_linebuf(pTHX);
PERL_EXPORT_C IV        PerlIOBase_noop_fail(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOBase_noop_ok(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOBase_popped(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
PERL_EXPORT_C PerlIO *  PerlIOBase_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);
PERL_EXPORT_C SSize_t   PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
PERL_EXPORT_C void      PerlIOBase_setlinebuf(pTHX_ PerlIO *f);
PERL_EXPORT_C SSize_t   PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);

/* Buf */
PERL_EXPORT_C Size_t    PerlIOBuf_bufsiz(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOBuf_close(pTHX_ PerlIO *f);
PERL_EXPORT_C PerlIO *  PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
PERL_EXPORT_C IV        PerlIOBuf_fill(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOBuf_flush(pTHX_ PerlIO *f);
PERL_EXPORT_C STDCHAR * PerlIOBuf_get_base(pTHX_ PerlIO *f);
PERL_EXPORT_C SSize_t   PerlIOBuf_get_cnt(pTHX_ PerlIO *f);
PERL_EXPORT_C STDCHAR * PerlIOBuf_get_ptr(pTHX_ PerlIO *f);
PERL_EXPORT_C 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);
PERL_EXPORT_C IV        PerlIOBuf_popped(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
PERL_EXPORT_C SSize_t   PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
PERL_EXPORT_C IV        PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence);
PERL_EXPORT_C void      PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt);
PERL_EXPORT_C Off_t     PerlIOBuf_tell(pTHX_ PerlIO *f);
PERL_EXPORT_C SSize_t   PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
PERL_EXPORT_C SSize_t   PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count);

/* Crlf */
PERL_EXPORT_C IV        PerlIOCrlf_binmode(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOCrlf_flush(pTHX_ PerlIO *f);
PERL_EXPORT_C SSize_t   PerlIOCrlf_get_cnt(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
PERL_EXPORT_C void      PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt);
PERL_EXPORT_C SSize_t   PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
PERL_EXPORT_C SSize_t   PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
PERL_EXPORT_C SSize_t   PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count);

/* Pending */
PERL_EXPORT_C IV        PerlIOPending_close(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOPending_fill(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOPending_flush(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
PERL_EXPORT_C SSize_t   PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
PERL_EXPORT_C IV        PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence);
PERL_EXPORT_C void      PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt);

/* Pop */
PERL_EXPORT_C IV        PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);

/* Raw */
PERL_EXPORT_C IV        PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);

/* Stdio */
PERL_EXPORT_C void      PerlIOStdio_clearerr(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOStdio_close(pTHX_ PerlIO *f);
PERL_EXPORT_C PerlIO *  PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
PERL_EXPORT_C IV        PerlIOStdio_eof(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOStdio_error(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOStdio_fileno(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOStdio_fill(pTHX_ PerlIO *f);
PERL_EXPORT_C IV        PerlIOStdio_flush(pTHX_ PerlIO *f);
PERL_EXPORT_C STDCHAR * PerlIOStdio_get_base(pTHX_ PerlIO *f);
PERL_EXPORT_C char *    PerlIOStdio_mode(const char *mode, char *tmode);
PERL_EXPORT_C PerlIO *  PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args);
PERL_EXPORT_C IV        PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
PERL_EXPORT_C SSize_t   PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
PERL_EXPORT_C IV        PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence);
PERL_EXPORT_C void      PerlIOStdio_setlinebuf(pTHX_ PerlIO *f);
PERL_EXPORT_C Off_t     PerlIOStdio_tell(pTHX_ PerlIO *f);
PERL_EXPORT_C SSize_t   PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
PERL_EXPORT_C SSize_t   PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count);

/* Unix */
PERL_EXPORT_C IV        PerlIOUnix_close(pTHX_ PerlIO *f);
PERL_EXPORT_C PerlIO *  PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
PERL_EXPORT_C IV        PerlIOUnix_fileno(pTHX_ PerlIO *f);
PERL_EXPORT_C int       PerlIOUnix_oflags(const char *mode);
PERL_EXPORT_C PerlIO *  PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args);
PERL_EXPORT_C IV        PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
PERL_EXPORT_C SSize_t   PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
PERL_EXPORT_C int       PerlIOUnix_refcnt_dec(int fd);
PERL_EXPORT_C void      PerlIOUnix_refcnt_inc(int fd);
PERL_EXPORT_C int       PerlIOUnix_refcnt(int fd);
PERL_EXPORT_C IV        PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence);
PERL_EXPORT_C Off_t     PerlIOUnix_tell(pTHX_ PerlIO *f);
PERL_EXPORT_C SSize_t   PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count);

/* Utf8 */
PERL_EXPORT_C IV        PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);

#endif				/* _PERLIOL_H */

/*
 * Local variables:
 * c-indentation-style: bsd
 * c-basic-offset: 4
 * indent-tabs-mode: t
 * End:
 *
 * ex: set ts=8 sts=4 sw=4 noet:
 */