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| eb1102fc |
1 | /* perlio.h |
| 2 | * |
| 4c79ee7a |
3 | * Copyright (c) 1997-2003, Larry Wall |
| eb1102fc |
4 | * |
| 5 | * You may distribute under the terms of either the GNU General Public |
| 6 | * License or the Artistic License, as specified in the README file. |
| 7 | * |
| 8 | */ |
| 9 | |
| 76ced9ad |
10 | #ifndef _PERLIO_H |
| 11 | #define _PERLIO_H |
| 12 | /* |
| 13 | Interface for perl to IO functions. |
| 14 | There is a hierachy of Configure determined #define controls: |
| 15 | USE_STDIO - forces PerlIO_xxx() to be #define-d onto stdio functions. |
| 16 | This is used for x2p subdirectory and for conservative |
| 17 | builds - "just like perl5.00X used to be". |
| 18 | This dominates over the others. |
| 19 | |
| 20 | USE_PERLIO - The primary Configure variable that enables PerlIO. |
| 21 | If USE_PERLIO is _NOT_ set |
| 22 | then USE_STDIO above will be set to be conservative. |
| 23 | If USE_PERLIO is set |
| 24 | then there are two modes determined by USE_SFIO: |
| 25 | |
| 26 | USE_SFIO - If set causes PerlIO_xxx() to be #define-d onto sfio functions. |
| 27 | A backward compatability mode for some specialist applications. |
| 28 | |
| 29 | If USE_SFIO is not set then PerlIO_xxx() are real functions |
| 30 | defined in perlio.c which implement extra functionality |
| 31 | required for utf8 support. |
| 32 | |
| 33 | One further note - the table-of-functions scheme controlled |
| 34 | by PERL_IMPLICIT_SYS turns on USE_PERLIO so that iperlsys.h can |
| 35 | #define PerlIO_xxx() to go via the function table, without having |
| 36 | to #undef them from (say) stdio forms. |
| 37 | |
| 38 | */ |
| 39 | |
| 40 | #if defined(PERL_IMPLICIT_SYS) |
| 41 | #ifndef USE_PERLIO |
| 2986a63f |
42 | #ifndef NETWARE |
| 2cbbe5a1 |
43 | /* # define USE_PERLIO */ |
| 76ced9ad |
44 | #endif |
| 45 | #endif |
| 2986a63f |
46 | #endif |
| 76ced9ad |
47 | |
| 48 | #ifndef USE_PERLIO |
| 49 | # define USE_STDIO |
| 50 | #endif |
| 51 | |
| 52 | #ifdef USE_STDIO |
| 53 | # ifndef PERLIO_IS_STDIO |
| 54 | # define PERLIO_IS_STDIO |
| 55 | # endif |
| 56 | #endif |
| 57 | |
| 58 | /* -------------------- End of Configure controls ---------------------------- */ |
| 59 | |
| 60 | /* |
| 61 | * Although we may not want stdio to be used including <stdio.h> here |
| 62 | * avoids issues where stdio.h has strange side effects |
| 63 | */ |
| 64 | #include <stdio.h> |
| 65 | |
| 2a15cca7 |
66 | #ifdef __BEOS__ |
| 67 | int fseeko(FILE *stream, off_t offset, int whence); |
| 68 | off_t ftello(FILE *stream); |
| 69 | #endif |
| 70 | |
| 76ced9ad |
71 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FTELLO) && !defined(USE_FTELL64) |
| 72 | #define ftell ftello |
| 73 | #endif |
| 74 | |
| 75 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FSEEKO) && !defined(USE_FSEEK64) |
| 76 | #define fseek fseeko |
| 77 | #endif |
| 78 | |
| 6f2bd249 |
79 | /* BS2000 includes are sometimes a bit non standard :-( */ |
| 80 | #if defined(POSIX_BC) && defined(O_BINARY) && !defined(O_TEXT) |
| 81 | #undef O_BINARY |
| 82 | #endif |
| 83 | |
| 76ced9ad |
84 | #ifdef PERLIO_IS_STDIO |
| 85 | /* #define PerlIO_xxxx() as equivalent stdio function */ |
| 86 | #include "perlsdio.h" |
| 14a5cf38 |
87 | #else /* PERLIO_IS_STDIO */ |
| 76ced9ad |
88 | #ifdef USE_SFIO |
| 89 | /* #define PerlIO_xxxx() as equivalent sfio function */ |
| 90 | #include "perlsfio.h" |
| 14a5cf38 |
91 | #endif /* USE_SFIO */ |
| 92 | #endif /* PERLIO_IS_STDIO */ |
| 76ced9ad |
93 | |
| 94 | #ifndef PerlIO |
| 95 | /* ----------- PerlIO implementation ---------- */ |
| 96 | /* PerlIO not #define-d to something else - define the implementation */ |
| 97 | |
| 98 | typedef struct _PerlIO PerlIOl; |
| 99 | typedef struct _PerlIO_funcs PerlIO_funcs; |
| 100 | typedef PerlIOl *PerlIO; |
| 101 | #define PerlIO PerlIO |
| a1d180c4 |
102 | #define PERLIO_LAYERS 1 |
| 76ced9ad |
103 | |
| 14a5cf38 |
104 | extern void PerlIO_define_layer(pTHX_ PerlIO_funcs *tab); |
| 105 | extern PerlIO_funcs *PerlIO_find_layer(pTHX_ const char *name, STRLEN len, |
| 106 | int load); |
| 107 | extern PerlIO *PerlIO_push(pTHX_ PerlIO *f, PerlIO_funcs *tab, |
| 108 | const char *mode, SV *arg); |
| 109 | extern void PerlIO_pop(pTHX_ PerlIO *f); |
| 39f7a870 |
110 | extern AV* PerlIO_get_layers(pTHX_ PerlIO *f); |
| 3a1ee7e8 |
111 | extern void PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param); |
| 76ced9ad |
112 | |
| 14a5cf38 |
113 | #endif /* PerlIO */ |
| 76ced9ad |
114 | |
| 115 | /* ----------- End of implementation choices ---------- */ |
| 116 | |
| 117 | #ifndef PERLIO_IS_STDIO |
| 118 | /* Not using stdio _directly_ as PerlIO */ |
| 119 | |
| 120 | /* We now need to determine what happens if source trys to use stdio. |
| 121 | * There are three cases based on PERLIO_NOT_STDIO which XS code |
| 122 | * can set how it wants. |
| 123 | */ |
| 124 | |
| 125 | #ifdef PERL_CORE |
| 126 | /* Make a choice for perl core code |
| 127 | - currently this is set to try and catch lingering raw stdio calls. |
| 128 | This is a known issue with some non UNIX ports which still use |
| 129 | "native" stdio features. |
| 130 | */ |
| 131 | #ifndef PERLIO_NOT_STDIO |
| 132 | #define PERLIO_NOT_STDIO 1 |
| 133 | #endif |
| f7e7eb72 |
134 | #else |
| 135 | #ifndef PERLIO_NOT_STDIO |
| 136 | #define PERLIO_NOT_STDIO 0 |
| 137 | #endif |
| 76ced9ad |
138 | #endif |
| 139 | |
| 140 | #ifdef PERLIO_NOT_STDIO |
| 141 | #if PERLIO_NOT_STDIO |
| 142 | /* |
| 143 | * PERLIO_NOT_STDIO #define'd as 1 |
| 144 | * Case 1: Strong denial of stdio - make all stdio calls (we can think of) errors |
| 145 | */ |
| 146 | #include "nostdio.h" |
| 14a5cf38 |
147 | #else /* if PERLIO_NOT_STDIO */ |
| 76ced9ad |
148 | /* |
| 149 | * PERLIO_NOT_STDIO #define'd as 0 |
| 150 | * Case 2: Declares that both PerlIO and stdio can be used |
| 151 | */ |
| 14a5cf38 |
152 | #endif /* if PERLIO_NOT_STDIO */ |
| 153 | #else /* ifdef PERLIO_NOT_STDIO */ |
| 76ced9ad |
154 | /* |
| 155 | * PERLIO_NOT_STDIO not defined |
| 156 | * Case 3: Try and fake stdio calls as PerlIO calls |
| 157 | */ |
| 158 | #include "fakesdio.h" |
| 14a5cf38 |
159 | #endif /* ifndef PERLIO_NOT_STDIO */ |
| 160 | #endif /* PERLIO_IS_STDIO */ |
| 76ced9ad |
161 | |
| b47b7e59 |
162 | #define specialCopIO(sv) ((sv) == Nullsv) |
| ac27b0f5 |
163 | |
| 76ced9ad |
164 | /* ----------- fill in things that have not got #define'd ---------- */ |
| 165 | |
| 166 | #ifndef Fpos_t |
| 167 | #define Fpos_t Off_t |
| 168 | #endif |
| 169 | |
| 170 | #ifndef EOF |
| 171 | #define EOF (-1) |
| 172 | #endif |
| 173 | |
| 174 | /* This is to catch case with no stdio */ |
| 175 | #ifndef BUFSIZ |
| 176 | #define BUFSIZ 1024 |
| 177 | #endif |
| 178 | |
| 179 | #ifndef SEEK_SET |
| 180 | #define SEEK_SET 0 |
| 181 | #endif |
| 182 | |
| 183 | #ifndef SEEK_CUR |
| 184 | #define SEEK_CUR 1 |
| 185 | #endif |
| 186 | |
| 187 | #ifndef SEEK_END |
| 188 | #define SEEK_END 2 |
| 189 | #endif |
| 190 | |
| ecdeb87c |
191 | #define PERLIO_DUP_CLONE 1 |
| 192 | #define PERLIO_DUP_FD 2 |
| 193 | |
| 76ced9ad |
194 | /* --------------------- Now prototypes for functions --------------- */ |
| 195 | |
| adb71456 |
196 | START_EXTERN_C |
| 76ced9ad |
197 | #ifndef NEXT30_NO_ATTRIBUTE |
| 14a5cf38 |
198 | #ifndef HASATTRIBUTE /* disable GNU-cc attribute checking? */ |
| 199 | #ifdef __attribute__ /* Avoid possible redefinition errors */ |
| 76ced9ad |
200 | #undef __attribute__ |
| 201 | #endif |
| 202 | #define __attribute__(attr) |
| 203 | #endif |
| 204 | #endif |
| 76ced9ad |
205 | #ifndef PerlIO_init |
| 3a1ee7e8 |
206 | extern void PerlIO_init(pTHX); |
| 76ced9ad |
207 | #endif |
| 208 | #ifndef PerlIO_stdoutf |
| 14a5cf38 |
209 | extern int PerlIO_stdoutf(const char *, ...) |
| 1e56004e |
210 | #ifdef CHECK_FORMAT |
| 211 | __attribute__ ((__format__(__printf__, 1, 2))) |
| 212 | #endif |
| 213 | ; |
| 76ced9ad |
214 | #endif |
| 215 | #ifndef PerlIO_puts |
| 14a5cf38 |
216 | extern int PerlIO_puts(PerlIO *, const char *); |
| 76ced9ad |
217 | #endif |
| 218 | #ifndef PerlIO_open |
| 14a5cf38 |
219 | extern PerlIO *PerlIO_open(const char *, const char *); |
| 76ced9ad |
220 | #endif |
| 6e60e805 |
221 | #ifndef PerlIO_openn |
| 14a5cf38 |
222 | extern PerlIO *PerlIO_openn(pTHX_ const char *layers, const char *mode, |
| 223 | int fd, int imode, int perm, PerlIO *old, |
| 224 | int narg, SV **arg); |
| ee518936 |
225 | #endif |
| 76ced9ad |
226 | #ifndef PerlIO_eof |
| 14a5cf38 |
227 | extern int PerlIO_eof(PerlIO *); |
| 76ced9ad |
228 | #endif |
| 229 | #ifndef PerlIO_error |
| 14a5cf38 |
230 | extern int PerlIO_error(PerlIO *); |
| 76ced9ad |
231 | #endif |
| 232 | #ifndef PerlIO_clearerr |
| 14a5cf38 |
233 | extern void PerlIO_clearerr(PerlIO *); |
| 76ced9ad |
234 | #endif |
| 235 | #ifndef PerlIO_getc |
| 14a5cf38 |
236 | extern int PerlIO_getc(PerlIO *); |
| 76ced9ad |
237 | #endif |
| 238 | #ifndef PerlIO_putc |
| 14a5cf38 |
239 | extern int PerlIO_putc(PerlIO *, int); |
| 76ced9ad |
240 | #endif |
| 76ced9ad |
241 | #ifndef PerlIO_ungetc |
| 14a5cf38 |
242 | extern int PerlIO_ungetc(PerlIO *, int); |
| 76ced9ad |
243 | #endif |
| 76ced9ad |
244 | #ifndef PerlIO_fdopen |
| 14a5cf38 |
245 | extern PerlIO *PerlIO_fdopen(int, const char *); |
| 76ced9ad |
246 | #endif |
| 247 | #ifndef PerlIO_importFILE |
| 4b069b44 |
248 | extern PerlIO *PerlIO_importFILE(FILE *, const char *); |
| 76ced9ad |
249 | #endif |
| 250 | #ifndef PerlIO_exportFILE |
| 4b069b44 |
251 | extern FILE *PerlIO_exportFILE(PerlIO *, const char *); |
| 76ced9ad |
252 | #endif |
| 253 | #ifndef PerlIO_findFILE |
| 14a5cf38 |
254 | extern FILE *PerlIO_findFILE(PerlIO *); |
| 76ced9ad |
255 | #endif |
| 256 | #ifndef PerlIO_releaseFILE |
| 14a5cf38 |
257 | extern void PerlIO_releaseFILE(PerlIO *, FILE *); |
| 76ced9ad |
258 | #endif |
| 259 | #ifndef PerlIO_read |
| 14a5cf38 |
260 | extern SSize_t PerlIO_read(PerlIO *, void *, Size_t); |
| 76ced9ad |
261 | #endif |
| a15cef0c |
262 | #ifndef PerlIO_unread |
| 14a5cf38 |
263 | extern SSize_t PerlIO_unread(PerlIO *, const void *, Size_t); |
| a15cef0c |
264 | #endif |
| 76ced9ad |
265 | #ifndef PerlIO_write |
| 14a5cf38 |
266 | extern SSize_t PerlIO_write(PerlIO *, const void *, Size_t); |
| 76ced9ad |
267 | #endif |
| 268 | #ifndef PerlIO_setlinebuf |
| 14a5cf38 |
269 | extern void PerlIO_setlinebuf(PerlIO *); |
| 76ced9ad |
270 | #endif |
| 271 | #ifndef PerlIO_printf |
| 14a5cf38 |
272 | extern int PerlIO_printf(PerlIO *, const char *, ...) |
| 1e56004e |
273 | #ifdef CHECK_FORMAT |
| 274 | __attribute__ ((__format__(__printf__, 2, 3))) |
| 275 | #endif |
| 276 | ; |
| 76ced9ad |
277 | #endif |
| 278 | #ifndef PerlIO_sprintf |
| 14a5cf38 |
279 | extern int PerlIO_sprintf(char *, int, const char *, ...) |
| 1e56004e |
280 | #ifdef CHECK_FORMAT |
| 281 | __attribute__ ((__format__(__printf__, 3, 4))) |
| 282 | #endif |
| 283 | ; |
| 76ced9ad |
284 | #endif |
| 285 | #ifndef PerlIO_vprintf |
| 14a5cf38 |
286 | extern int PerlIO_vprintf(PerlIO *, const char *, va_list); |
| 76ced9ad |
287 | #endif |
| 288 | #ifndef PerlIO_tell |
| 14a5cf38 |
289 | extern Off_t PerlIO_tell(PerlIO *); |
| 76ced9ad |
290 | #endif |
| 291 | #ifndef PerlIO_seek |
| 14a5cf38 |
292 | extern int PerlIO_seek(PerlIO *, Off_t, int); |
| 76ced9ad |
293 | #endif |
| 294 | #ifndef PerlIO_rewind |
| 14a5cf38 |
295 | extern void PerlIO_rewind(PerlIO *); |
| 76ced9ad |
296 | #endif |
| 297 | #ifndef PerlIO_has_base |
| 14a5cf38 |
298 | extern int PerlIO_has_base(PerlIO *); |
| 76ced9ad |
299 | #endif |
| 300 | #ifndef PerlIO_has_cntptr |
| 14a5cf38 |
301 | extern int PerlIO_has_cntptr(PerlIO *); |
| 76ced9ad |
302 | #endif |
| 303 | #ifndef PerlIO_fast_gets |
| 14a5cf38 |
304 | extern int PerlIO_fast_gets(PerlIO *); |
| 76ced9ad |
305 | #endif |
| 306 | #ifndef PerlIO_canset_cnt |
| 14a5cf38 |
307 | extern int PerlIO_canset_cnt(PerlIO *); |
| 76ced9ad |
308 | #endif |
| 309 | #ifndef PerlIO_get_ptr |
| 14a5cf38 |
310 | extern STDCHAR *PerlIO_get_ptr(PerlIO *); |
| 76ced9ad |
311 | #endif |
| 312 | #ifndef PerlIO_get_cnt |
| 14a5cf38 |
313 | extern int PerlIO_get_cnt(PerlIO *); |
| 76ced9ad |
314 | #endif |
| 315 | #ifndef PerlIO_set_cnt |
| 14a5cf38 |
316 | extern void PerlIO_set_cnt(PerlIO *, int); |
| 76ced9ad |
317 | #endif |
| 318 | #ifndef PerlIO_set_ptrcnt |
| 14a5cf38 |
319 | extern void PerlIO_set_ptrcnt(PerlIO *, STDCHAR *, int); |
| 76ced9ad |
320 | #endif |
| 321 | #ifndef PerlIO_get_base |
| 14a5cf38 |
322 | extern STDCHAR *PerlIO_get_base(PerlIO *); |
| 76ced9ad |
323 | #endif |
| 324 | #ifndef PerlIO_get_bufsiz |
| 14a5cf38 |
325 | extern int PerlIO_get_bufsiz(PerlIO *); |
| 76ced9ad |
326 | #endif |
| 327 | #ifndef PerlIO_tmpfile |
| 14a5cf38 |
328 | extern PerlIO *PerlIO_tmpfile(void); |
| 76ced9ad |
329 | #endif |
| 330 | #ifndef PerlIO_stdin |
| 14a5cf38 |
331 | extern PerlIO *PerlIO_stdin(void); |
| 76ced9ad |
332 | #endif |
| 333 | #ifndef PerlIO_stdout |
| 14a5cf38 |
334 | extern PerlIO *PerlIO_stdout(void); |
| 76ced9ad |
335 | #endif |
| 336 | #ifndef PerlIO_stderr |
| 14a5cf38 |
337 | extern PerlIO *PerlIO_stderr(void); |
| 76ced9ad |
338 | #endif |
| 339 | #ifndef PerlIO_getpos |
| 14a5cf38 |
340 | extern int PerlIO_getpos(PerlIO *, SV *); |
| 76ced9ad |
341 | #endif |
| 342 | #ifndef PerlIO_setpos |
| 14a5cf38 |
343 | extern int PerlIO_setpos(PerlIO *, SV *); |
| 76ced9ad |
344 | #endif |
| 345 | #ifndef PerlIO_fdupopen |
| ecdeb87c |
346 | extern PerlIO *PerlIO_fdupopen(pTHX_ PerlIO *, CLONE_PARAMS *, int); |
| 5f1a76d0 |
347 | #endif |
| 11ae941d |
348 | #if !defined(PerlIO_modestr) && !defined(PERLIO_IS_STDIO) |
| 14a5cf38 |
349 | extern char *PerlIO_modestr(PerlIO *, char *buf); |
| 76ced9ad |
350 | #endif |
| 351 | #ifndef PerlIO_isutf8 |
| 14a5cf38 |
352 | extern int PerlIO_isutf8(PerlIO *); |
| 76ced9ad |
353 | #endif |
| 156e9b51 |
354 | #ifndef PerlIO_apply_layers |
| 14a5cf38 |
355 | extern int PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, |
| 356 | const char *names); |
| 60382766 |
357 | #endif |
| 358 | #ifndef PerlIO_binmode |
| 14a5cf38 |
359 | extern int PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int omode, |
| 360 | const char *names); |
| ac27b0f5 |
361 | #endif |
| a15cef0c |
362 | #ifndef PerlIO_getname |
| 14a5cf38 |
363 | extern char *PerlIO_getname(PerlIO *, char *); |
| a15cef0c |
364 | #endif |
| 76ced9ad |
365 | |
| 13621cfb |
366 | extern void PerlIO_destruct(pTHX); |
| 367 | |
| 06c7082d |
368 | extern int PerlIO_intmode2str(int rawmode, char *mode, int *writing); |
| 369 | |
| 3a1ee7e8 |
370 | #ifdef PERLIO_LAYERS |
| 371 | extern void PerlIO_cleanup(pTHX); |
| adb71456 |
372 | |
| 14a5cf38 |
373 | extern void PerlIO_debug(const char *fmt, ...); |
| 3a1ee7e8 |
374 | typedef struct PerlIO_list_s PerlIO_list_t; |
| 375 | |
| 88b61e10 |
376 | |
| 11ae941d |
377 | #endif |
| 378 | |
| adb71456 |
379 | END_EXTERN_C |
| 14a5cf38 |
380 | #endif /* _PERLIO_H */ |
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