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make PL_perlio an array of PerlIOl, not PerlIO *
[perl5.git] / perliol.h
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1#ifndef _PERLIOL_H
2#define _PERLIOL_H
3
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4typedef struct {
5 PerlIO_funcs *funcs;
6 SV *arg;
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7} PerlIO_pair_t;
8
3a1ee7e8 9struct PerlIO_list_s {
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10 IV refcnt;
11 IV cur;
12 IV len;
13 PerlIO_pair_t *array;
3a1ee7e8 14};
fcf2db38 15
14a5cf38 16struct _PerlIO_funcs {
2dc2558e 17 Size_t fsize;
e1ec3a88 18 const char *name;
14a5cf38 19 Size_t size;
c9e984e3 20 U32 kind;
2dc2558e 21 IV (*Pushed) (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
f62ce20a 22 IV (*Popped) (pTHX_ PerlIO *f);
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23 PerlIO *(*Open) (pTHX_ PerlIO_funcs *tab,
24 PerlIO_list_t *layers, IV n,
25 const char *mode,
26 int fd, int imode, int perm,
27 PerlIO *old, int narg, SV **args);
86e05cf2 28 IV (*Binmode)(pTHX_ PerlIO *f);
ecdeb87c 29 SV *(*Getarg) (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags);
f62ce20a 30 IV (*Fileno) (pTHX_ PerlIO *f);
ecdeb87c 31 PerlIO *(*Dup) (pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
14a5cf38 32 /* Unix-like functions - cf sfio line disciplines */
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33 SSize_t(*Read) (pTHX_ PerlIO *f, void *vbuf, Size_t count);
34 SSize_t(*Unread) (pTHX_ PerlIO *f, const void *vbuf, Size_t count);
35 SSize_t(*Write) (pTHX_ PerlIO *f, const void *vbuf, Size_t count);
94a175e1 36 IV (*Seek) (pTHX_ PerlIO *f, Off_t offset, int whence);
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37 Off_t(*Tell) (pTHX_ PerlIO *f);
38 IV (*Close) (pTHX_ PerlIO *f);
14a5cf38 39 /* Stdio-like buffered IO functions */
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40 IV (*Flush) (pTHX_ PerlIO *f);
41 IV (*Fill) (pTHX_ PerlIO *f);
42 IV (*Eof) (pTHX_ PerlIO *f);
43 IV (*Error) (pTHX_ PerlIO *f);
44 void (*Clearerr) (pTHX_ PerlIO *f);
45 void (*Setlinebuf) (pTHX_ PerlIO *f);
14a5cf38 46 /* Perl's snooping functions */
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47 STDCHAR *(*Get_base) (pTHX_ PerlIO *f);
48 Size_t(*Get_bufsiz) (pTHX_ PerlIO *f);
49 STDCHAR *(*Get_ptr) (pTHX_ PerlIO *f);
50 SSize_t(*Get_cnt) (pTHX_ PerlIO *f);
51 void (*Set_ptrcnt) (pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt);
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52};
53
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54/*--------------------------------------------------------------------------------------*/
55/* Kind values */
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56#define PERLIO_K_RAW 0x00000001
57#define PERLIO_K_BUFFERED 0x00000002
f5b9d040 58#define PERLIO_K_CANCRLF 0x00000004
5e2ab84b 59#define PERLIO_K_FASTGETS 0x00000008
dfebf958 60#define PERLIO_K_DUMMY 0x00000010
26fb694e 61#define PERLIO_K_UTF8 0x00008000
13621cfb 62#define PERLIO_K_DESTRUCT 0x00010000
7cf31beb 63#define PERLIO_K_MULTIARG 0x00020000
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64
65/*--------------------------------------------------------------------------------------*/
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66struct _PerlIO {
67 PerlIOl *next; /* Lower layer */
68 PerlIO_funcs *tab; /* Functions for this layer */
4b069b44 69 U32 flags; /* Various flags for state */
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70};
71
72/*--------------------------------------------------------------------------------------*/
73
74/* Flag values */
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75#define PERLIO_F_EOF 0x00000100
76#define PERLIO_F_CANWRITE 0x00000200
77#define PERLIO_F_CANREAD 0x00000400
78#define PERLIO_F_ERROR 0x00000800
79#define PERLIO_F_TRUNCATE 0x00001000
80#define PERLIO_F_APPEND 0x00002000
81#define PERLIO_F_CRLF 0x00004000
82#define PERLIO_F_UTF8 0x00008000
83#define PERLIO_F_UNBUF 0x00010000
84#define PERLIO_F_WRBUF 0x00020000
85#define PERLIO_F_RDBUF 0x00040000
86#define PERLIO_F_LINEBUF 0x00080000
87#define PERLIO_F_TEMP 0x00100000
88#define PERLIO_F_OPEN 0x00200000
89#define PERLIO_F_FASTGETS 0x00400000
a9c883f6 90#define PERLIO_F_TTY 0x00800000
6caa5a9c 91#define PERLIO_F_NOTREG 0x01000000
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92
93#define PerlIOBase(f) (*(f))
94#define PerlIOSelf(f,type) ((type *)PerlIOBase(f))
95#define PerlIONext(f) (&(PerlIOBase(f)->next))
04892f78 96#define PerlIOValid(f) ((f) && *(f))
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97
98/*--------------------------------------------------------------------------------------*/
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99/* Data exports - EXTCONST rather than extern is needed for Cygwin */
100#undef EXTPERLIO
101#ifdef PERLIO_FUNCS_CONST
102#define EXTPERLIO EXTCONST
103#else
104#define EXTPERLIO EXT
105#endif
106EXTPERLIO PerlIO_funcs PerlIO_unix;
107EXTPERLIO PerlIO_funcs PerlIO_perlio;
108EXTPERLIO PerlIO_funcs PerlIO_stdio;
109EXTPERLIO PerlIO_funcs PerlIO_crlf;
110EXTPERLIO PerlIO_funcs PerlIO_utf8;
111EXTPERLIO PerlIO_funcs PerlIO_byte;
112EXTPERLIO PerlIO_funcs PerlIO_raw;
113EXTPERLIO PerlIO_funcs PerlIO_pending;
76ced9ad 114#ifdef HAS_MMAP
27da23d5 115EXTPERLIO PerlIO_funcs PerlIO_mmap;
76ced9ad 116#endif
0c4128ad 117#ifdef WIN32
27da23d5 118EXTPERLIO PerlIO_funcs PerlIO_win32;
0c4128ad 119#endif
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120PERL_EXPORT_C PerlIO *PerlIO_allocate(pTHX);
121PERL_EXPORT_C SV *PerlIO_arg_fetch(PerlIO_list_t *av, IV n);
fcf2db38 122#define PerlIOArg PerlIO_arg_fetch(layers,n)
76ced9ad 123
35990314 124#ifdef PERLIO_USING_CRLF
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125#define PERLIO_STDTEXT "t"
126#else
127#define PERLIO_STDTEXT ""
128#endif
129
76ced9ad 130/*--------------------------------------------------------------------------------------*/
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131/* perlio buffer layer
132 As this is reasonably generic its struct and "methods" are declared here
133 so they can be used to "inherit" from it.
134*/
135
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136typedef struct {
137 struct _PerlIO base; /* Base "class" info */
138 STDCHAR *buf; /* Start of buffer */
139 STDCHAR *end; /* End of valid part of buffer */
140 STDCHAR *ptr; /* Current position in buffer */
141 Off_t posn; /* Offset of buf into the file */
142 Size_t bufsiz; /* Real size of buffer */
143 IV oneword; /* Emergency buffer */
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144} PerlIOBuf;
145
27da23d5 146PERL_EXPORT_C int PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode,
d9dac8cd 147 PerlIO_list_t *layers, IV n, IV max);
27da23d5 148PERL_EXPORT_C int PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names);
27da23d5 149PERL_EXPORT_C PerlIO_funcs *PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def);
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150
151
27da23d5 152PERL_EXPORT_C SV *PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param);
303f2dc3 153PERL_EXPORT_C void PerlIO_cleantable(pTHX_ PerlIOl **tablep);
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154PERL_EXPORT_C SV * PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab);
155PERL_EXPORT_C void PerlIO_default_buffer(pTHX_ PerlIO_list_t *av);
156PERL_EXPORT_C void PerlIO_stdstreams(pTHX);
157PERL_EXPORT_C int PerlIO__close(pTHX_ PerlIO *f);
158PERL_EXPORT_C PerlIO_list_t * PerlIO_resolve_layers(pTHX_ const char *layers, const char *mode, int narg, SV **args);
159PERL_EXPORT_C PerlIO_funcs * PerlIO_default_layer(pTHX_ I32 n);
160PERL_EXPORT_C PerlIO_list_t * PerlIO_default_layers(pTHX);
161PERL_EXPORT_C PerlIO * PerlIO_reopen(const char *path, const char *mode, PerlIO *f);
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162PERL_EXPORT_C int PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap)
163 __attribute__format__(__printf__,3,0);
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164
165PERL_EXPORT_C PerlIO_list_t *PerlIO_list_alloc(pTHX);
166PERL_EXPORT_C PerlIO_list_t *PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param);
167PERL_EXPORT_C void PerlIO_list_free(pTHX_ PerlIO_list_t *list);
168PERL_EXPORT_C void PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg);
169PERL_EXPORT_C void PerlIO_list_free(pTHX_ PerlIO_list_t *list);
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170
171/* PerlIO_teardown doesn't need exporting, but the EXTERN_C is needed
172 * for compiling as C++. Must also match with what perl.h says. */
0934c9d9 173EXTERN_C void PerlIO_teardown(void);
0c4128ad 174
76ced9ad 175/*--------------------------------------------------------------------------------------*/
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176/* Generic, or stub layer functions */
177
178PERL_EXPORT_C IV PerlIOBase_binmode(pTHX_ PerlIO *f);
179PERL_EXPORT_C void PerlIOBase_clearerr(pTHX_ PerlIO *f);
180PERL_EXPORT_C IV PerlIOBase_close(pTHX_ PerlIO *f);
181PERL_EXPORT_C PerlIO * PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
182PERL_EXPORT_C IV PerlIOBase_eof(pTHX_ PerlIO *f);
183PERL_EXPORT_C IV PerlIOBase_error(pTHX_ PerlIO *f);
184PERL_EXPORT_C IV PerlIOBase_fileno(pTHX_ PerlIO *f);
185PERL_EXPORT_C void PerlIOBase_flush_linebuf(pTHX);
186PERL_EXPORT_C IV PerlIOBase_noop_fail(pTHX_ PerlIO *f);
187PERL_EXPORT_C IV PerlIOBase_noop_ok(pTHX_ PerlIO *f);
188PERL_EXPORT_C IV PerlIOBase_popped(pTHX_ PerlIO *f);
189PERL_EXPORT_C IV PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
190PERL_EXPORT_C SSize_t PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
191PERL_EXPORT_C void PerlIOBase_setlinebuf(pTHX_ PerlIO *f);
192PERL_EXPORT_C SSize_t PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
193
194/* Buf */
195PERL_EXPORT_C Size_t PerlIOBuf_bufsiz(pTHX_ PerlIO *f);
196PERL_EXPORT_C IV PerlIOBuf_close(pTHX_ PerlIO *f);
197PERL_EXPORT_C PerlIO * PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
198PERL_EXPORT_C IV PerlIOBuf_fill(pTHX_ PerlIO *f);
199PERL_EXPORT_C IV PerlIOBuf_flush(pTHX_ PerlIO *f);
200PERL_EXPORT_C STDCHAR * PerlIOBuf_get_base(pTHX_ PerlIO *f);
201PERL_EXPORT_C SSize_t PerlIOBuf_get_cnt(pTHX_ PerlIO *f);
202PERL_EXPORT_C STDCHAR * PerlIOBuf_get_ptr(pTHX_ PerlIO *f);
203PERL_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);
204PERL_EXPORT_C IV PerlIOBuf_popped(pTHX_ PerlIO *f);
205PERL_EXPORT_C IV PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
206PERL_EXPORT_C SSize_t PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
207PERL_EXPORT_C IV PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence);
208PERL_EXPORT_C void PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt);
209PERL_EXPORT_C Off_t PerlIOBuf_tell(pTHX_ PerlIO *f);
210PERL_EXPORT_C SSize_t PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
211PERL_EXPORT_C SSize_t PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
212
213/* Crlf */
214PERL_EXPORT_C IV PerlIOCrlf_binmode(pTHX_ PerlIO *f);
215PERL_EXPORT_C IV PerlIOCrlf_flush(pTHX_ PerlIO *f);
216PERL_EXPORT_C SSize_t PerlIOCrlf_get_cnt(pTHX_ PerlIO *f);
217PERL_EXPORT_C IV PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
218PERL_EXPORT_C void PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt);
219PERL_EXPORT_C SSize_t PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
220PERL_EXPORT_C SSize_t PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
221PERL_EXPORT_C SSize_t PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
222
223/* Mmap */
224PERL_EXPORT_C IV PerlIOMmap_close(pTHX_ PerlIO *f);
225PERL_EXPORT_C PerlIO * PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
226PERL_EXPORT_C IV PerlIOMmap_fill(pTHX_ PerlIO *f);
227PERL_EXPORT_C IV PerlIOMmap_flush(pTHX_ PerlIO *f);
228PERL_EXPORT_C STDCHAR * PerlIOMmap_get_base(pTHX_ PerlIO *f);
229PERL_EXPORT_C IV PerlIOMmap_map(pTHX_ PerlIO *f);
230PERL_EXPORT_C IV PerlIOMmap_unmap(pTHX_ PerlIO *f);
231PERL_EXPORT_C SSize_t PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
232PERL_EXPORT_C SSize_t PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
233
234/* Pending */
235PERL_EXPORT_C IV PerlIOPending_close(pTHX_ PerlIO *f);
236PERL_EXPORT_C IV PerlIOPending_fill(pTHX_ PerlIO *f);
237PERL_EXPORT_C IV PerlIOPending_flush(pTHX_ PerlIO *f);
238PERL_EXPORT_C IV PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
239PERL_EXPORT_C SSize_t PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
240PERL_EXPORT_C IV PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence);
241PERL_EXPORT_C void PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt);
242
243/* Pop */
244PERL_EXPORT_C IV PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
245
246/* Raw */
247PERL_EXPORT_C PerlIO * PerlIORaw_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);
248PERL_EXPORT_C IV PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
249
250/* Stdio */
251PERL_EXPORT_C void PerlIOStdio_clearerr(pTHX_ PerlIO *f);
252PERL_EXPORT_C IV PerlIOStdio_close(pTHX_ PerlIO *f);
253PERL_EXPORT_C PerlIO * PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
254PERL_EXPORT_C IV PerlIOStdio_eof(pTHX_ PerlIO *f);
255PERL_EXPORT_C IV PerlIOStdio_error(pTHX_ PerlIO *f);
256PERL_EXPORT_C IV PerlIOStdio_fileno(pTHX_ PerlIO *f);
257PERL_EXPORT_C IV PerlIOStdio_fill(pTHX_ PerlIO *f);
258PERL_EXPORT_C IV PerlIOStdio_flush(pTHX_ PerlIO *f);
259PERL_EXPORT_C STDCHAR * PerlIOStdio_get_base(pTHX_ PerlIO *f);
260PERL_EXPORT_C char * PerlIOStdio_mode(const char *mode, char *tmode);
261PERL_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);
262PERL_EXPORT_C IV PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
263PERL_EXPORT_C SSize_t PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
264PERL_EXPORT_C IV PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence);
265PERL_EXPORT_C void PerlIOStdio_setlinebuf(pTHX_ PerlIO *f);
266PERL_EXPORT_C Off_t PerlIOStdio_tell(pTHX_ PerlIO *f);
267PERL_EXPORT_C SSize_t PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
268PERL_EXPORT_C SSize_t PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
269
270/* Unix */
271PERL_EXPORT_C IV PerlIOUnix_close(pTHX_ PerlIO *f);
272PERL_EXPORT_C PerlIO * PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags);
273PERL_EXPORT_C IV PerlIOUnix_fileno(pTHX_ PerlIO *f);
274PERL_EXPORT_C int PerlIOUnix_oflags(const char *mode);
275PERL_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);
276PERL_EXPORT_C IV PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
277PERL_EXPORT_C SSize_t PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count);
278PERL_EXPORT_C int PerlIOUnix_refcnt_dec(int fd);
279PERL_EXPORT_C void PerlIOUnix_refcnt_inc(int fd);
280PERL_EXPORT_C IV PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence);
281PERL_EXPORT_C Off_t PerlIOUnix_tell(pTHX_ PerlIO *f);
282PERL_EXPORT_C SSize_t PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count);
283
284/* Utf8 */
285PERL_EXPORT_C IV PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab);
76ced9ad 286
14a5cf38 287#endif /* _PERLIOL_H */
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288
289/*
290 * Local variables:
291 * c-indentation-style: bsd
292 * c-basic-offset: 4
293 * indent-tabs-mode: t
294 * End:
295 *
296 * ex: set ts=8 sts=4 sw=4 noet:
297 */