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1 | /* perlio.c |
2 | * |
1761cee5 |
3 | * Copyright (c) 1996-2000, Nick Ing-Simmons |
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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 | |
10 | #define VOIDUSED 1 |
12ae5dfc |
11 | #ifdef PERL_MICRO |
12 | # include "uconfig.h" |
13 | #else |
14 | # include "config.h" |
15 | #endif |
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16 | |
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17 | #define PERLIO_NOT_STDIO 0 |
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18 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
6f9d8c32 |
19 | /* #define PerlIO FILE */ |
760ac839 |
20 | #endif |
21 | /* |
6f9d8c32 |
22 | * This file provides those parts of PerlIO abstraction |
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23 | * which are not #defined in iperlsys.h. |
6f9d8c32 |
24 | * Which these are depends on various Configure #ifdef's |
760ac839 |
25 | */ |
26 | |
27 | #include "EXTERN.h" |
864dbfa3 |
28 | #define PERL_IN_PERLIO_C |
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29 | #include "perl.h" |
30 | |
32e30700 |
31 | #if !defined(PERL_IMPLICIT_SYS) |
32 | |
6f9d8c32 |
33 | #ifdef PERLIO_IS_STDIO |
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34 | |
35 | void |
8ac85365 |
36 | PerlIO_init(void) |
760ac839 |
37 | { |
6f9d8c32 |
38 | /* Does nothing (yet) except force this file to be included |
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39 | in perl binary. That allows this file to force inclusion |
6f9d8c32 |
40 | of other functions that may be required by loadable |
41 | extensions e.g. for FileHandle::tmpfile |
760ac839 |
42 | */ |
43 | } |
44 | |
33dcbb9a |
45 | #undef PerlIO_tmpfile |
46 | PerlIO * |
8ac85365 |
47 | PerlIO_tmpfile(void) |
33dcbb9a |
48 | { |
49 | return tmpfile(); |
50 | } |
51 | |
760ac839 |
52 | #else /* PERLIO_IS_STDIO */ |
53 | |
54 | #ifdef USE_SFIO |
55 | |
56 | #undef HAS_FSETPOS |
57 | #undef HAS_FGETPOS |
58 | |
6f9d8c32 |
59 | /* This section is just to make sure these functions |
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60 | get pulled in from libsfio.a |
61 | */ |
62 | |
63 | #undef PerlIO_tmpfile |
64 | PerlIO * |
c78749f2 |
65 | PerlIO_tmpfile(void) |
760ac839 |
66 | { |
67 | return sftmp(0); |
68 | } |
69 | |
70 | void |
c78749f2 |
71 | PerlIO_init(void) |
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72 | { |
6f9d8c32 |
73 | /* Force this file to be included in perl binary. Which allows |
74 | * this file to force inclusion of other functions that may be |
75 | * required by loadable extensions e.g. for FileHandle::tmpfile |
760ac839 |
76 | */ |
77 | |
78 | /* Hack |
79 | * sfio does its own 'autoflush' on stdout in common cases. |
6f9d8c32 |
80 | * Flush results in a lot of lseek()s to regular files and |
760ac839 |
81 | * lot of small writes to pipes. |
82 | */ |
83 | sfset(sfstdout,SF_SHARE,0); |
84 | } |
85 | |
17c3b450 |
86 | #else /* USE_SFIO */ |
6f9d8c32 |
87 | /*======================================================================================*/ |
6f9d8c32 |
88 | /* Implement all the PerlIO interface ourselves. |
9e353e3b |
89 | */ |
760ac839 |
90 | |
76ced9ad |
91 | #include "perliol.h" |
92 | |
b1ef6e3b |
93 | /* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */ |
02f66e2f |
94 | #ifdef I_UNISTD |
95 | #include <unistd.h> |
96 | #endif |
06da4f11 |
97 | #ifdef HAS_MMAP |
98 | #include <sys/mman.h> |
99 | #endif |
100 | |
f3862f8b |
101 | #include "XSUB.h" |
02f66e2f |
102 | |
76ced9ad |
103 | void PerlIO_debug(char *fmt,...) __attribute__((format(__printf__,1,2))); |
6f9d8c32 |
104 | |
6f9d8c32 |
105 | void |
106 | PerlIO_debug(char *fmt,...) |
107 | { |
108 | static int dbg = 0; |
109 | if (!dbg) |
110 | { |
00b02797 |
111 | char *s = PerlEnv_getenv("PERLIO_DEBUG"); |
6f9d8c32 |
112 | if (s && *s) |
00b02797 |
113 | dbg = PerlLIO_open3(s,O_WRONLY|O_CREAT|O_APPEND,0666); |
6f9d8c32 |
114 | else |
115 | dbg = -1; |
116 | } |
117 | if (dbg > 0) |
118 | { |
119 | dTHX; |
120 | va_list ap; |
121 | SV *sv = newSVpvn("",0); |
122 | char *s; |
123 | STRLEN len; |
124 | va_start(ap,fmt); |
05d1247b |
125 | s = CopFILE(PL_curcop); |
126 | if (!s) |
127 | s = "(none)"; |
128 | Perl_sv_catpvf(aTHX_ sv, "%s:%"IVdf" ", s, (IV)CopLINE(PL_curcop)); |
c7fc522f |
129 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
130 | |
6f9d8c32 |
131 | s = SvPV(sv,len); |
00b02797 |
132 | PerlLIO_write(dbg,s,len); |
6f9d8c32 |
133 | va_end(ap); |
134 | SvREFCNT_dec(sv); |
135 | } |
136 | } |
137 | |
9e353e3b |
138 | /*--------------------------------------------------------------------------------------*/ |
139 | |
9e353e3b |
140 | /* Inner level routines */ |
141 | |
b1ef6e3b |
142 | /* Table of pointers to the PerlIO structs (malloc'ed) */ |
05d1247b |
143 | PerlIO *_perlio = NULL; |
144 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 |
145 | |
760ac839 |
146 | PerlIO * |
6f9d8c32 |
147 | PerlIO_allocate(void) |
148 | { |
f3862f8b |
149 | /* Find a free slot in the table, allocating new table as necessary */ |
05d1247b |
150 | PerlIO **last = &_perlio; |
6f9d8c32 |
151 | PerlIO *f; |
05d1247b |
152 | while ((f = *last)) |
6f9d8c32 |
153 | { |
05d1247b |
154 | int i; |
155 | last = (PerlIO **)(f); |
156 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
6f9d8c32 |
157 | { |
05d1247b |
158 | if (!*++f) |
6f9d8c32 |
159 | { |
6f9d8c32 |
160 | return f; |
161 | } |
6f9d8c32 |
162 | } |
6f9d8c32 |
163 | } |
05d1247b |
164 | Newz('I',f,PERLIO_TABLE_SIZE,PerlIO); |
165 | if (!f) |
166 | return NULL; |
167 | *last = f; |
168 | return f+1; |
169 | } |
170 | |
171 | void |
172 | PerlIO_cleantable(PerlIO **tablep) |
173 | { |
174 | PerlIO *table = *tablep; |
175 | if (table) |
176 | { |
177 | int i; |
178 | PerlIO_cleantable((PerlIO **) &(table[0])); |
179 | for (i=PERLIO_TABLE_SIZE-1; i > 0; i--) |
180 | { |
181 | PerlIO *f = table+i; |
182 | if (*f) |
183 | PerlIO_close(f); |
184 | } |
185 | Safefree(table); |
186 | *tablep = NULL; |
187 | } |
188 | } |
189 | |
4a4a6116 |
190 | HV *PerlIO_layer_hv; |
191 | AV *PerlIO_layer_av; |
192 | |
05d1247b |
193 | void |
194 | PerlIO_cleanup(void) |
195 | { |
196 | PerlIO_cleantable(&_perlio); |
6f9d8c32 |
197 | } |
198 | |
9e353e3b |
199 | void |
200 | PerlIO_pop(PerlIO *f) |
760ac839 |
201 | { |
9e353e3b |
202 | PerlIOl *l = *f; |
203 | if (l) |
6f9d8c32 |
204 | { |
06da4f11 |
205 | (*l->tab->Popped)(f); |
9e353e3b |
206 | *f = l->next; |
207 | Safefree(l); |
6f9d8c32 |
208 | } |
6f9d8c32 |
209 | } |
210 | |
211 | #undef PerlIO_close |
212 | int |
213 | PerlIO_close(PerlIO *f) |
214 | { |
9e353e3b |
215 | int code = (*PerlIOBase(f)->tab->Close)(f); |
216 | while (*f) |
6f9d8c32 |
217 | { |
9e353e3b |
218 | PerlIO_pop(f); |
6f9d8c32 |
219 | } |
220 | return code; |
221 | } |
222 | |
9e353e3b |
223 | |
224 | /*--------------------------------------------------------------------------------------*/ |
225 | /* Given the abstraction above the public API functions */ |
226 | |
227 | #undef PerlIO_fileno |
228 | int |
229 | PerlIO_fileno(PerlIO *f) |
230 | { |
231 | return (*PerlIOBase(f)->tab->Fileno)(f); |
232 | } |
233 | |
f3862f8b |
234 | XS(XS_perlio_import) |
235 | { |
236 | dXSARGS; |
237 | GV *gv = CvGV(cv); |
238 | char *s = GvNAME(gv); |
239 | STRLEN l = GvNAMELEN(gv); |
240 | PerlIO_debug("%.*s\n",(int) l,s); |
241 | XSRETURN_EMPTY; |
242 | } |
243 | |
244 | XS(XS_perlio_unimport) |
245 | { |
246 | dXSARGS; |
247 | GV *gv = CvGV(cv); |
248 | char *s = GvNAME(gv); |
249 | STRLEN l = GvNAMELEN(gv); |
250 | PerlIO_debug("%.*s\n",(int) l,s); |
251 | XSRETURN_EMPTY; |
252 | } |
253 | |
f3862f8b |
254 | SV * |
255 | PerlIO_find_layer(char *name, STRLEN len) |
256 | { |
257 | dTHX; |
258 | SV **svp; |
259 | SV *sv; |
260 | if (len <= 0) |
261 | len = strlen(name); |
262 | svp = hv_fetch(PerlIO_layer_hv,name,len,0); |
263 | if (svp && (sv = *svp) && SvROK(sv)) |
264 | return *svp; |
265 | return NULL; |
266 | } |
267 | |
268 | void |
269 | PerlIO_define_layer(PerlIO_funcs *tab) |
270 | { |
271 | dTHX; |
272 | HV *stash = gv_stashpv("perlio::Layer", TRUE); |
e7778b43 |
273 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash); |
f3862f8b |
274 | hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),sv,0); |
275 | } |
276 | |
277 | PerlIO_funcs * |
278 | PerlIO_default_layer(I32 n) |
279 | { |
280 | dTHX; |
281 | SV **svp; |
282 | SV *layer; |
283 | PerlIO_funcs *tab = &PerlIO_stdio; |
284 | int len; |
285 | if (!PerlIO_layer_hv) |
286 | { |
00b02797 |
287 | char *s = PerlEnv_getenv("PERLIO"); |
f3862f8b |
288 | newXS("perlio::import",XS_perlio_import,__FILE__); |
289 | newXS("perlio::unimport",XS_perlio_unimport,__FILE__); |
a1d180c4 |
290 | PerlIO_layer_hv = get_hv("open::layers",GV_ADD|GV_ADDMULTI); |
291 | PerlIO_layer_av = get_av("open::layers",GV_ADD|GV_ADDMULTI); |
f3862f8b |
292 | PerlIO_define_layer(&PerlIO_unix); |
f3862f8b |
293 | PerlIO_define_layer(&PerlIO_perlio); |
294 | PerlIO_define_layer(&PerlIO_stdio); |
06da4f11 |
295 | #ifdef HAS_MMAP |
296 | PerlIO_define_layer(&PerlIO_mmap); |
297 | #endif |
f3862f8b |
298 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_unix.name,0))); |
299 | if (s) |
300 | { |
301 | while (*s) |
302 | { |
00b02797 |
303 | while (*s && isSPACE((unsigned char)*s)) |
f3862f8b |
304 | s++; |
305 | if (*s) |
306 | { |
307 | char *e = s; |
308 | SV *layer; |
00b02797 |
309 | while (*e && !isSPACE((unsigned char)*e)) |
f3862f8b |
310 | e++; |
311 | layer = PerlIO_find_layer(s,e-s); |
312 | if (layer) |
313 | { |
314 | PerlIO_debug("Pushing %.*s\n",(e-s),s); |
315 | av_push(PerlIO_layer_av,SvREFCNT_inc(layer)); |
316 | } |
317 | else |
ef0f9817 |
318 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(e-s),s); |
f3862f8b |
319 | s = e; |
320 | } |
321 | } |
322 | } |
323 | } |
324 | len = av_len(PerlIO_layer_av); |
325 | if (len < 1) |
326 | { |
327 | if (PerlIO_stdio.Set_ptrcnt) |
328 | { |
329 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_stdio.name,0))); |
330 | } |
331 | else |
332 | { |
333 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_perlio.name,0))); |
334 | } |
335 | len = av_len(PerlIO_layer_av); |
336 | } |
337 | if (n < 0) |
338 | n += len+1; |
339 | svp = av_fetch(PerlIO_layer_av,n,0); |
340 | if (svp && (layer = *svp) && SvROK(layer) && SvIOK((layer = SvRV(layer)))) |
341 | { |
e7778b43 |
342 | tab = INT2PTR(PerlIO_funcs *, SvIV(layer)); |
f3862f8b |
343 | } |
344 | /* PerlIO_debug("Layer %d is %s\n",n,tab->name); */ |
345 | return tab; |
346 | } |
347 | |
348 | #define PerlIO_default_top() PerlIO_default_layer(-1) |
349 | #define PerlIO_default_btm() PerlIO_default_layer(0) |
350 | |
351 | void |
352 | PerlIO_stdstreams() |
353 | { |
354 | if (!_perlio) |
355 | { |
356 | PerlIO_allocate(); |
357 | PerlIO_fdopen(0,"Ir"); |
358 | PerlIO_fdopen(1,"Iw"); |
359 | PerlIO_fdopen(2,"Iw"); |
360 | } |
361 | } |
9e353e3b |
362 | |
76ced9ad |
363 | PerlIO * |
364 | PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode) |
365 | { |
366 | PerlIOl *l = NULL; |
367 | Newc('L',l,tab->size,char,PerlIOl); |
368 | if (l) |
369 | { |
370 | Zero(l,tab->size,char); |
371 | l->next = *f; |
372 | l->tab = tab; |
373 | *f = l; |
374 | if ((*l->tab->Pushed)(f,mode) != 0) |
375 | { |
376 | PerlIO_pop(f); |
377 | return NULL; |
378 | } |
379 | } |
380 | return f; |
381 | } |
382 | |
9e353e3b |
383 | #undef PerlIO_fdopen |
384 | PerlIO * |
385 | PerlIO_fdopen(int fd, const char *mode) |
386 | { |
387 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
388 | if (!_perlio) |
389 | PerlIO_stdstreams(); |
06da4f11 |
390 | return (*tab->Fdopen)(tab,fd,mode); |
9e353e3b |
391 | } |
392 | |
6f9d8c32 |
393 | #undef PerlIO_open |
394 | PerlIO * |
395 | PerlIO_open(const char *path, const char *mode) |
396 | { |
9e353e3b |
397 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
398 | if (!_perlio) |
399 | PerlIO_stdstreams(); |
06da4f11 |
400 | return (*tab->Open)(tab,path,mode); |
6f9d8c32 |
401 | } |
402 | |
9e353e3b |
403 | #undef PerlIO_reopen |
404 | PerlIO * |
405 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) |
6f9d8c32 |
406 | { |
9e353e3b |
407 | if (f) |
6f9d8c32 |
408 | { |
9e353e3b |
409 | PerlIO_flush(f); |
410 | if ((*PerlIOBase(f)->tab->Reopen)(path,mode,f) == 0) |
411 | { |
06da4f11 |
412 | if ((*PerlIOBase(f)->tab->Pushed)(f,mode) == 0) |
413 | return f; |
9e353e3b |
414 | } |
415 | return NULL; |
6f9d8c32 |
416 | } |
9e353e3b |
417 | else |
418 | return PerlIO_open(path,mode); |
760ac839 |
419 | } |
420 | |
9e353e3b |
421 | #undef PerlIO_read |
422 | SSize_t |
423 | PerlIO_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
424 | { |
9e353e3b |
425 | return (*PerlIOBase(f)->tab->Read)(f,vbuf,count); |
760ac839 |
426 | } |
427 | |
313ca112 |
428 | #undef PerlIO_unread |
429 | SSize_t |
430 | PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
431 | { |
313ca112 |
432 | return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count); |
760ac839 |
433 | } |
434 | |
9e353e3b |
435 | #undef PerlIO_write |
436 | SSize_t |
437 | PerlIO_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
438 | { |
9e353e3b |
439 | return (*PerlIOBase(f)->tab->Write)(f,vbuf,count); |
760ac839 |
440 | } |
441 | |
9e353e3b |
442 | #undef PerlIO_seek |
6f9d8c32 |
443 | int |
9e353e3b |
444 | PerlIO_seek(PerlIO *f, Off_t offset, int whence) |
760ac839 |
445 | { |
9e353e3b |
446 | return (*PerlIOBase(f)->tab->Seek)(f,offset,whence); |
760ac839 |
447 | } |
448 | |
9e353e3b |
449 | #undef PerlIO_tell |
450 | Off_t |
451 | PerlIO_tell(PerlIO *f) |
760ac839 |
452 | { |
9e353e3b |
453 | return (*PerlIOBase(f)->tab->Tell)(f); |
760ac839 |
454 | } |
455 | |
9e353e3b |
456 | #undef PerlIO_flush |
6f9d8c32 |
457 | int |
9e353e3b |
458 | PerlIO_flush(PerlIO *f) |
760ac839 |
459 | { |
6f9d8c32 |
460 | if (f) |
461 | { |
9e353e3b |
462 | return (*PerlIOBase(f)->tab->Flush)(f); |
6f9d8c32 |
463 | } |
9e353e3b |
464 | else |
6f9d8c32 |
465 | { |
05d1247b |
466 | PerlIO **table = &_perlio; |
9e353e3b |
467 | int code = 0; |
05d1247b |
468 | while ((f = *table)) |
6f9d8c32 |
469 | { |
05d1247b |
470 | int i; |
471 | table = (PerlIO **)(f++); |
472 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
9e353e3b |
473 | { |
474 | if (*f && PerlIO_flush(f) != 0) |
475 | code = -1; |
05d1247b |
476 | f++; |
9e353e3b |
477 | } |
6f9d8c32 |
478 | } |
9e353e3b |
479 | return code; |
6f9d8c32 |
480 | } |
760ac839 |
481 | } |
482 | |
06da4f11 |
483 | #undef PerlIO_fill |
484 | int |
485 | PerlIO_fill(PerlIO *f) |
486 | { |
487 | return (*PerlIOBase(f)->tab->Fill)(f); |
488 | } |
489 | |
f3862f8b |
490 | #undef PerlIO_isutf8 |
491 | int |
492 | PerlIO_isutf8(PerlIO *f) |
493 | { |
494 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; |
495 | } |
496 | |
9e353e3b |
497 | #undef PerlIO_eof |
6f9d8c32 |
498 | int |
9e353e3b |
499 | PerlIO_eof(PerlIO *f) |
760ac839 |
500 | { |
9e353e3b |
501 | return (*PerlIOBase(f)->tab->Eof)(f); |
502 | } |
503 | |
504 | #undef PerlIO_error |
505 | int |
506 | PerlIO_error(PerlIO *f) |
507 | { |
508 | return (*PerlIOBase(f)->tab->Error)(f); |
509 | } |
510 | |
511 | #undef PerlIO_clearerr |
512 | void |
513 | PerlIO_clearerr(PerlIO *f) |
514 | { |
515 | (*PerlIOBase(f)->tab->Clearerr)(f); |
516 | } |
517 | |
518 | #undef PerlIO_setlinebuf |
519 | void |
520 | PerlIO_setlinebuf(PerlIO *f) |
521 | { |
522 | (*PerlIOBase(f)->tab->Setlinebuf)(f); |
523 | } |
524 | |
525 | #undef PerlIO_has_base |
526 | int |
527 | PerlIO_has_base(PerlIO *f) |
528 | { |
529 | if (f && *f) |
6f9d8c32 |
530 | { |
9e353e3b |
531 | return (PerlIOBase(f)->tab->Get_base != NULL); |
6f9d8c32 |
532 | } |
9e353e3b |
533 | return 0; |
760ac839 |
534 | } |
535 | |
9e353e3b |
536 | #undef PerlIO_fast_gets |
537 | int |
538 | PerlIO_fast_gets(PerlIO *f) |
760ac839 |
539 | { |
9e353e3b |
540 | if (f && *f) |
6f9d8c32 |
541 | { |
c7fc522f |
542 | PerlIOl *l = PerlIOBase(f); |
543 | return (l->tab->Set_ptrcnt != NULL); |
6f9d8c32 |
544 | } |
9e353e3b |
545 | return 0; |
546 | } |
547 | |
548 | #undef PerlIO_has_cntptr |
549 | int |
550 | PerlIO_has_cntptr(PerlIO *f) |
551 | { |
552 | if (f && *f) |
553 | { |
554 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
555 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); |
556 | } |
557 | return 0; |
558 | } |
559 | |
560 | #undef PerlIO_canset_cnt |
561 | int |
562 | PerlIO_canset_cnt(PerlIO *f) |
563 | { |
564 | if (f && *f) |
565 | { |
c7fc522f |
566 | PerlIOl *l = PerlIOBase(f); |
567 | return (l->tab->Set_ptrcnt != NULL); |
9e353e3b |
568 | } |
c7fc522f |
569 | return 0; |
760ac839 |
570 | } |
571 | |
572 | #undef PerlIO_get_base |
888911fc |
573 | STDCHAR * |
a20bf0c3 |
574 | PerlIO_get_base(PerlIO *f) |
760ac839 |
575 | { |
9e353e3b |
576 | return (*PerlIOBase(f)->tab->Get_base)(f); |
577 | } |
578 | |
579 | #undef PerlIO_get_bufsiz |
580 | int |
581 | PerlIO_get_bufsiz(PerlIO *f) |
582 | { |
583 | return (*PerlIOBase(f)->tab->Get_bufsiz)(f); |
584 | } |
585 | |
586 | #undef PerlIO_get_ptr |
587 | STDCHAR * |
588 | PerlIO_get_ptr(PerlIO *f) |
589 | { |
590 | return (*PerlIOBase(f)->tab->Get_ptr)(f); |
591 | } |
592 | |
593 | #undef PerlIO_get_cnt |
05d1247b |
594 | int |
9e353e3b |
595 | PerlIO_get_cnt(PerlIO *f) |
596 | { |
597 | return (*PerlIOBase(f)->tab->Get_cnt)(f); |
598 | } |
599 | |
600 | #undef PerlIO_set_cnt |
601 | void |
05d1247b |
602 | PerlIO_set_cnt(PerlIO *f,int cnt) |
9e353e3b |
603 | { |
f3862f8b |
604 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt); |
9e353e3b |
605 | } |
606 | |
607 | #undef PerlIO_set_ptrcnt |
608 | void |
05d1247b |
609 | PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) |
9e353e3b |
610 | { |
f3862f8b |
611 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt); |
9e353e3b |
612 | } |
613 | |
614 | /*--------------------------------------------------------------------------------------*/ |
615 | /* "Methods" of the "base class" */ |
616 | |
617 | IV |
618 | PerlIOBase_fileno(PerlIO *f) |
619 | { |
620 | return PerlIO_fileno(PerlIONext(f)); |
621 | } |
622 | |
76ced9ad |
623 | IV |
624 | PerlIOBase_pushed(PerlIO *f, const char *mode) |
9e353e3b |
625 | { |
76ced9ad |
626 | PerlIOl *l = PerlIOBase(f); |
627 | l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
628 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); |
629 | if (mode) |
6f9d8c32 |
630 | { |
76ced9ad |
631 | switch (*mode++) |
06da4f11 |
632 | { |
76ced9ad |
633 | case 'r': |
634 | l->flags = PERLIO_F_CANREAD; |
635 | break; |
636 | case 'a': |
637 | l->flags = PERLIO_F_APPEND|PERLIO_F_CANWRITE; |
638 | break; |
639 | case 'w': |
640 | l->flags = PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE; |
641 | break; |
642 | default: |
643 | errno = EINVAL; |
644 | return -1; |
645 | } |
646 | while (*mode) |
647 | { |
648 | switch (*mode++) |
649 | { |
650 | case '+': |
651 | l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE; |
652 | break; |
653 | case 'b': |
654 | l->flags |= PERLIO_F_BINARY; |
655 | break; |
656 | default: |
657 | errno = EINVAL; |
658 | return -1; |
659 | } |
06da4f11 |
660 | } |
6f9d8c32 |
661 | } |
76ced9ad |
662 | else |
663 | { |
664 | if (l->next) |
665 | { |
666 | l->flags |= l->next->flags & |
667 | (PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
668 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); |
669 | } |
670 | } |
671 | return 0; |
672 | } |
673 | |
674 | IV |
675 | PerlIOBase_popped(PerlIO *f) |
676 | { |
677 | return 0; |
760ac839 |
678 | } |
679 | |
9e353e3b |
680 | SSize_t |
681 | PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count) |
682 | { |
683 | Off_t old = PerlIO_tell(f); |
684 | if (PerlIO_seek(f,-((Off_t)count),SEEK_CUR) == 0) |
685 | { |
686 | Off_t new = PerlIO_tell(f); |
687 | return old - new; |
688 | } |
689 | return 0; |
690 | } |
691 | |
692 | IV |
06da4f11 |
693 | PerlIOBase_noop_ok(PerlIO *f) |
9e353e3b |
694 | { |
695 | return 0; |
696 | } |
697 | |
698 | IV |
06da4f11 |
699 | PerlIOBase_noop_fail(PerlIO *f) |
700 | { |
701 | return -1; |
702 | } |
703 | |
704 | IV |
9e353e3b |
705 | PerlIOBase_close(PerlIO *f) |
706 | { |
707 | IV code = 0; |
708 | if (PerlIO_flush(f) != 0) |
709 | code = -1; |
710 | if (PerlIO_close(PerlIONext(f)) != 0) |
711 | code = -1; |
712 | PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN); |
713 | return code; |
714 | } |
715 | |
716 | IV |
717 | PerlIOBase_eof(PerlIO *f) |
718 | { |
719 | if (f && *f) |
720 | { |
721 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
722 | } |
723 | return 1; |
724 | } |
725 | |
726 | IV |
727 | PerlIOBase_error(PerlIO *f) |
728 | { |
729 | if (f && *f) |
730 | { |
731 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
732 | } |
733 | return 1; |
734 | } |
735 | |
736 | void |
737 | PerlIOBase_clearerr(PerlIO *f) |
738 | { |
739 | if (f && *f) |
740 | { |
741 | PerlIOBase(f)->flags &= ~PERLIO_F_ERROR; |
742 | } |
743 | } |
744 | |
745 | void |
746 | PerlIOBase_setlinebuf(PerlIO *f) |
747 | { |
748 | |
749 | } |
750 | |
9e353e3b |
751 | /*--------------------------------------------------------------------------------------*/ |
752 | /* Bottom-most level for UNIX-like case */ |
753 | |
754 | typedef struct |
755 | { |
756 | struct _PerlIO base; /* The generic part */ |
757 | int fd; /* UNIX like file descriptor */ |
758 | int oflags; /* open/fcntl flags */ |
759 | } PerlIOUnix; |
760 | |
6f9d8c32 |
761 | int |
9e353e3b |
762 | PerlIOUnix_oflags(const char *mode) |
760ac839 |
763 | { |
9e353e3b |
764 | int oflags = -1; |
765 | switch(*mode) |
766 | { |
767 | case 'r': |
768 | oflags = O_RDONLY; |
769 | if (*++mode == '+') |
770 | { |
771 | oflags = O_RDWR; |
772 | mode++; |
773 | } |
774 | break; |
775 | |
776 | case 'w': |
777 | oflags = O_CREAT|O_TRUNC; |
778 | if (*++mode == '+') |
779 | { |
780 | oflags |= O_RDWR; |
781 | mode++; |
782 | } |
783 | else |
784 | oflags |= O_WRONLY; |
785 | break; |
786 | |
787 | case 'a': |
788 | oflags = O_CREAT|O_APPEND; |
789 | if (*++mode == '+') |
790 | { |
791 | oflags |= O_RDWR; |
792 | mode++; |
793 | } |
794 | else |
795 | oflags |= O_WRONLY; |
796 | break; |
797 | } |
798 | if (*mode || oflags == -1) |
6f9d8c32 |
799 | { |
9e353e3b |
800 | errno = EINVAL; |
801 | oflags = -1; |
6f9d8c32 |
802 | } |
9e353e3b |
803 | return oflags; |
804 | } |
805 | |
806 | IV |
807 | PerlIOUnix_fileno(PerlIO *f) |
808 | { |
809 | return PerlIOSelf(f,PerlIOUnix)->fd; |
810 | } |
811 | |
812 | PerlIO * |
06da4f11 |
813 | PerlIOUnix_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
814 | { |
815 | PerlIO *f = NULL; |
c7fc522f |
816 | if (*mode == 'I') |
817 | mode++; |
9e353e3b |
818 | if (fd >= 0) |
819 | { |
820 | int oflags = PerlIOUnix_oflags(mode); |
821 | if (oflags != -1) |
822 | { |
06da4f11 |
823 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); |
9e353e3b |
824 | s->fd = fd; |
825 | s->oflags = oflags; |
826 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
827 | } |
828 | } |
829 | return f; |
830 | } |
831 | |
832 | PerlIO * |
06da4f11 |
833 | PerlIOUnix_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
834 | { |
835 | PerlIO *f = NULL; |
836 | int oflags = PerlIOUnix_oflags(mode); |
837 | if (oflags != -1) |
838 | { |
00b02797 |
839 | int fd = PerlLIO_open3(path,oflags,0666); |
9e353e3b |
840 | if (fd >= 0) |
841 | { |
06da4f11 |
842 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); |
9e353e3b |
843 | s->fd = fd; |
844 | s->oflags = oflags; |
845 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
846 | } |
847 | } |
848 | return f; |
760ac839 |
849 | } |
850 | |
760ac839 |
851 | int |
9e353e3b |
852 | PerlIOUnix_reopen(const char *path, const char *mode, PerlIO *f) |
760ac839 |
853 | { |
9e353e3b |
854 | PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix); |
855 | int oflags = PerlIOUnix_oflags(mode); |
856 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
857 | (*PerlIOBase(f)->tab->Close)(f); |
858 | if (oflags != -1) |
859 | { |
00b02797 |
860 | int fd = PerlLIO_open3(path,oflags,0666); |
9e353e3b |
861 | if (fd >= 0) |
862 | { |
863 | s->fd = fd; |
864 | s->oflags = oflags; |
865 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
866 | return 0; |
867 | } |
868 | } |
869 | return -1; |
870 | } |
871 | |
872 | SSize_t |
873 | PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count) |
874 | { |
875 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
8f24bd79 |
876 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
877 | return 0; |
9e353e3b |
878 | while (1) |
879 | { |
00b02797 |
880 | SSize_t len = PerlLIO_read(fd,vbuf,count); |
9e353e3b |
881 | if (len >= 0 || errno != EINTR) |
06da4f11 |
882 | { |
883 | if (len < 0) |
884 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
885 | else if (len == 0 && count != 0) |
886 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
887 | return len; |
888 | } |
9e353e3b |
889 | } |
890 | } |
891 | |
892 | SSize_t |
893 | PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count) |
894 | { |
895 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
896 | while (1) |
897 | { |
00b02797 |
898 | SSize_t len = PerlLIO_write(fd,vbuf,count); |
9e353e3b |
899 | if (len >= 0 || errno != EINTR) |
06da4f11 |
900 | { |
901 | if (len < 0) |
902 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
903 | return len; |
904 | } |
9e353e3b |
905 | } |
906 | } |
907 | |
908 | IV |
909 | PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence) |
910 | { |
00b02797 |
911 | Off_t new = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence); |
06da4f11 |
912 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
9e353e3b |
913 | return (new == (Off_t) -1) ? -1 : 0; |
914 | } |
915 | |
916 | Off_t |
917 | PerlIOUnix_tell(PerlIO *f) |
918 | { |
00b02797 |
919 | return PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
9e353e3b |
920 | } |
921 | |
922 | IV |
923 | PerlIOUnix_close(PerlIO *f) |
924 | { |
925 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
926 | int code = 0; |
00b02797 |
927 | while (PerlLIO_close(fd) != 0) |
9e353e3b |
928 | { |
929 | if (errno != EINTR) |
930 | { |
931 | code = -1; |
932 | break; |
933 | } |
934 | } |
935 | if (code == 0) |
936 | { |
937 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
938 | } |
939 | return code; |
940 | } |
941 | |
942 | PerlIO_funcs PerlIO_unix = { |
943 | "unix", |
944 | sizeof(PerlIOUnix), |
945 | 0, |
946 | PerlIOUnix_fileno, |
947 | PerlIOUnix_fdopen, |
948 | PerlIOUnix_open, |
949 | PerlIOUnix_reopen, |
06da4f11 |
950 | PerlIOBase_pushed, |
951 | PerlIOBase_noop_ok, |
9e353e3b |
952 | PerlIOUnix_read, |
953 | PerlIOBase_unread, |
954 | PerlIOUnix_write, |
955 | PerlIOUnix_seek, |
956 | PerlIOUnix_tell, |
957 | PerlIOUnix_close, |
76ced9ad |
958 | PerlIOBase_noop_ok, /* flush */ |
959 | PerlIOBase_noop_fail, /* fill */ |
9e353e3b |
960 | PerlIOBase_eof, |
961 | PerlIOBase_error, |
962 | PerlIOBase_clearerr, |
963 | PerlIOBase_setlinebuf, |
964 | NULL, /* get_base */ |
965 | NULL, /* get_bufsiz */ |
966 | NULL, /* get_ptr */ |
967 | NULL, /* get_cnt */ |
968 | NULL, /* set_ptrcnt */ |
969 | }; |
970 | |
971 | /*--------------------------------------------------------------------------------------*/ |
972 | /* stdio as a layer */ |
973 | |
974 | typedef struct |
975 | { |
976 | struct _PerlIO base; |
977 | FILE * stdio; /* The stream */ |
978 | } PerlIOStdio; |
979 | |
980 | IV |
981 | PerlIOStdio_fileno(PerlIO *f) |
982 | { |
983 | return fileno(PerlIOSelf(f,PerlIOStdio)->stdio); |
984 | } |
985 | |
986 | |
987 | PerlIO * |
06da4f11 |
988 | PerlIOStdio_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
989 | { |
990 | PerlIO *f = NULL; |
c7fc522f |
991 | int init = 0; |
992 | if (*mode == 'I') |
993 | { |
994 | init = 1; |
995 | mode++; |
996 | } |
9e353e3b |
997 | if (fd >= 0) |
998 | { |
c7fc522f |
999 | FILE *stdio = NULL; |
1000 | if (init) |
1001 | { |
1002 | switch(fd) |
1003 | { |
1004 | case 0: |
1005 | stdio = stdin; |
1006 | break; |
1007 | case 1: |
1008 | stdio = stdout; |
1009 | break; |
1010 | case 2: |
1011 | stdio = stderr; |
1012 | break; |
1013 | } |
1014 | } |
1015 | else |
1016 | stdio = fdopen(fd,mode); |
9e353e3b |
1017 | if (stdio) |
1018 | { |
06da4f11 |
1019 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); |
9e353e3b |
1020 | s->stdio = stdio; |
1021 | } |
1022 | } |
1023 | return f; |
1024 | } |
1025 | |
1026 | #undef PerlIO_importFILE |
1027 | PerlIO * |
1028 | PerlIO_importFILE(FILE *stdio, int fl) |
1029 | { |
1030 | PerlIO *f = NULL; |
1031 | if (stdio) |
1032 | { |
1033 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,"r+"),PerlIOStdio); |
1034 | s->stdio = stdio; |
1035 | } |
1036 | return f; |
1037 | } |
1038 | |
1039 | PerlIO * |
06da4f11 |
1040 | PerlIOStdio_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
1041 | { |
1042 | PerlIO *f = NULL; |
1043 | FILE *stdio = fopen(path,mode); |
1044 | if (stdio) |
1045 | { |
06da4f11 |
1046 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); |
9e353e3b |
1047 | s->stdio = stdio; |
1048 | } |
1049 | return f; |
760ac839 |
1050 | } |
1051 | |
6f9d8c32 |
1052 | int |
9e353e3b |
1053 | PerlIOStdio_reopen(const char *path, const char *mode, PerlIO *f) |
1054 | { |
1055 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); |
1056 | FILE *stdio = freopen(path,mode,s->stdio); |
1057 | if (!s->stdio) |
1058 | return -1; |
1059 | s->stdio = stdio; |
1060 | return 0; |
1061 | } |
1062 | |
1063 | SSize_t |
1064 | PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count) |
1065 | { |
1066 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
c7fc522f |
1067 | SSize_t got = 0; |
9e353e3b |
1068 | if (count == 1) |
1069 | { |
1070 | STDCHAR *buf = (STDCHAR *) vbuf; |
1071 | /* Perl is expecting PerlIO_getc() to fill the buffer |
1072 | * Linux's stdio does not do that for fread() |
1073 | */ |
1074 | int ch = fgetc(s); |
1075 | if (ch != EOF) |
1076 | { |
1077 | *buf = ch; |
c7fc522f |
1078 | got = 1; |
9e353e3b |
1079 | } |
9e353e3b |
1080 | } |
c7fc522f |
1081 | else |
1082 | got = fread(vbuf,1,count,s); |
1083 | return got; |
9e353e3b |
1084 | } |
1085 | |
1086 | SSize_t |
1087 | PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count) |
1088 | { |
1089 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
1090 | STDCHAR *buf = ((STDCHAR *)vbuf)+count-1; |
1091 | SSize_t unread = 0; |
1092 | while (count > 0) |
1093 | { |
1094 | int ch = *buf-- & 0xff; |
1095 | if (ungetc(ch,s) != ch) |
1096 | break; |
1097 | unread++; |
1098 | count--; |
1099 | } |
1100 | return unread; |
1101 | } |
1102 | |
1103 | SSize_t |
1104 | PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count) |
1105 | { |
1106 | return fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio); |
1107 | } |
1108 | |
1109 | IV |
1110 | PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence) |
1111 | { |
c7fc522f |
1112 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1113 | return fseek(stdio,offset,whence); |
9e353e3b |
1114 | } |
1115 | |
1116 | Off_t |
1117 | PerlIOStdio_tell(PerlIO *f) |
1118 | { |
c7fc522f |
1119 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1120 | return ftell(stdio); |
9e353e3b |
1121 | } |
1122 | |
1123 | IV |
1124 | PerlIOStdio_close(PerlIO *f) |
1125 | { |
1126 | return fclose(PerlIOSelf(f,PerlIOStdio)->stdio); |
1127 | } |
1128 | |
1129 | IV |
1130 | PerlIOStdio_flush(PerlIO *f) |
1131 | { |
1132 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1133 | return fflush(stdio); |
1134 | } |
1135 | |
1136 | IV |
06da4f11 |
1137 | PerlIOStdio_fill(PerlIO *f) |
1138 | { |
1139 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1140 | int c; |
1141 | if (fflush(stdio) != 0) |
1142 | return EOF; |
1143 | c = fgetc(stdio); |
1144 | if (c == EOF || ungetc(c,stdio) != c) |
1145 | return EOF; |
1146 | return 0; |
1147 | } |
1148 | |
1149 | IV |
9e353e3b |
1150 | PerlIOStdio_eof(PerlIO *f) |
1151 | { |
1152 | return feof(PerlIOSelf(f,PerlIOStdio)->stdio); |
1153 | } |
1154 | |
1155 | IV |
1156 | PerlIOStdio_error(PerlIO *f) |
1157 | { |
1158 | return ferror(PerlIOSelf(f,PerlIOStdio)->stdio); |
1159 | } |
1160 | |
1161 | void |
1162 | PerlIOStdio_clearerr(PerlIO *f) |
1163 | { |
1164 | clearerr(PerlIOSelf(f,PerlIOStdio)->stdio); |
1165 | } |
1166 | |
1167 | void |
1168 | PerlIOStdio_setlinebuf(PerlIO *f) |
1169 | { |
1170 | #ifdef HAS_SETLINEBUF |
1171 | setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio); |
1172 | #else |
1173 | setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0); |
1174 | #endif |
1175 | } |
1176 | |
1177 | #ifdef FILE_base |
1178 | STDCHAR * |
1179 | PerlIOStdio_get_base(PerlIO *f) |
1180 | { |
1181 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1182 | return FILE_base(stdio); |
1183 | } |
1184 | |
1185 | Size_t |
1186 | PerlIOStdio_get_bufsiz(PerlIO *f) |
1187 | { |
1188 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1189 | return FILE_bufsiz(stdio); |
1190 | } |
1191 | #endif |
1192 | |
1193 | #ifdef USE_STDIO_PTR |
1194 | STDCHAR * |
1195 | PerlIOStdio_get_ptr(PerlIO *f) |
1196 | { |
1197 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1198 | return FILE_ptr(stdio); |
1199 | } |
1200 | |
1201 | SSize_t |
1202 | PerlIOStdio_get_cnt(PerlIO *f) |
1203 | { |
1204 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1205 | return FILE_cnt(stdio); |
1206 | } |
1207 | |
1208 | void |
1209 | PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt) |
1210 | { |
1211 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1212 | if (ptr != NULL) |
1213 | { |
1214 | #ifdef STDIO_PTR_LVALUE |
1215 | FILE_ptr(stdio) = ptr; |
1216 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
1217 | if (FILE_cnt(stdio) != (cnt)) |
1218 | { |
1219 | dTHX; |
1220 | assert(FILE_cnt(stdio) == (cnt)); |
1221 | } |
1222 | #endif |
1223 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) |
1224 | /* Setting ptr _does_ change cnt - we are done */ |
1225 | return; |
1226 | #endif |
1227 | #else /* STDIO_PTR_LVALUE */ |
1228 | abort(); |
1229 | #endif /* STDIO_PTR_LVALUE */ |
1230 | } |
1231 | /* Now (or only) set cnt */ |
1232 | #ifdef STDIO_CNT_LVALUE |
1233 | FILE_cnt(stdio) = cnt; |
1234 | #else /* STDIO_CNT_LVALUE */ |
1235 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
1236 | FILE_ptr(stdio) = FILE_ptr(stdio)+(FILE_cnt(stdio)-cnt); |
1237 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
1238 | abort(); |
1239 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
1240 | #endif /* STDIO_CNT_LVALUE */ |
1241 | } |
1242 | |
1243 | #endif |
1244 | |
1245 | PerlIO_funcs PerlIO_stdio = { |
1246 | "stdio", |
1247 | sizeof(PerlIOStdio), |
1248 | 0, |
1249 | PerlIOStdio_fileno, |
1250 | PerlIOStdio_fdopen, |
1251 | PerlIOStdio_open, |
1252 | PerlIOStdio_reopen, |
06da4f11 |
1253 | PerlIOBase_pushed, |
1254 | PerlIOBase_noop_ok, |
9e353e3b |
1255 | PerlIOStdio_read, |
1256 | PerlIOStdio_unread, |
1257 | PerlIOStdio_write, |
1258 | PerlIOStdio_seek, |
1259 | PerlIOStdio_tell, |
1260 | PerlIOStdio_close, |
1261 | PerlIOStdio_flush, |
06da4f11 |
1262 | PerlIOStdio_fill, |
9e353e3b |
1263 | PerlIOStdio_eof, |
1264 | PerlIOStdio_error, |
1265 | PerlIOStdio_clearerr, |
1266 | PerlIOStdio_setlinebuf, |
1267 | #ifdef FILE_base |
1268 | PerlIOStdio_get_base, |
1269 | PerlIOStdio_get_bufsiz, |
1270 | #else |
1271 | NULL, |
1272 | NULL, |
1273 | #endif |
1274 | #ifdef USE_STDIO_PTR |
1275 | PerlIOStdio_get_ptr, |
1276 | PerlIOStdio_get_cnt, |
0eb1d8a4 |
1277 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) |
9e353e3b |
1278 | PerlIOStdio_set_ptrcnt |
1279 | #else /* STDIO_PTR_LVALUE */ |
1280 | NULL |
1281 | #endif /* STDIO_PTR_LVALUE */ |
1282 | #else /* USE_STDIO_PTR */ |
1283 | NULL, |
1284 | NULL, |
1285 | NULL |
1286 | #endif /* USE_STDIO_PTR */ |
1287 | }; |
1288 | |
1289 | #undef PerlIO_exportFILE |
1290 | FILE * |
1291 | PerlIO_exportFILE(PerlIO *f, int fl) |
1292 | { |
1293 | PerlIO_flush(f); |
1294 | /* Should really push stdio discipline when we have them */ |
1295 | return fdopen(PerlIO_fileno(f),"r+"); |
1296 | } |
1297 | |
1298 | #undef PerlIO_findFILE |
1299 | FILE * |
1300 | PerlIO_findFILE(PerlIO *f) |
1301 | { |
1302 | return PerlIO_exportFILE(f,0); |
1303 | } |
1304 | |
1305 | #undef PerlIO_releaseFILE |
1306 | void |
1307 | PerlIO_releaseFILE(PerlIO *p, FILE *f) |
1308 | { |
1309 | } |
1310 | |
1311 | /*--------------------------------------------------------------------------------------*/ |
1312 | /* perlio buffer layer */ |
1313 | |
9e353e3b |
1314 | PerlIO * |
06da4f11 |
1315 | PerlIOBuf_fdopen(PerlIO_funcs *self, int fd, const char *mode) |
9e353e3b |
1316 | { |
1317 | PerlIO_funcs *tab = PerlIO_default_btm(); |
c7fc522f |
1318 | int init = 0; |
1319 | PerlIO *f; |
1320 | if (*mode == 'I') |
1321 | { |
1322 | init = 1; |
1323 | mode++; |
1324 | } |
06da4f11 |
1325 | f = (*tab->Fdopen)(tab,fd,mode); |
6f9d8c32 |
1326 | if (f) |
1327 | { |
c7fc522f |
1328 | /* Initial stderr is unbuffered */ |
1329 | if (!init || fd != 2) |
1330 | { |
06da4f11 |
1331 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); |
c7fc522f |
1332 | b->posn = PerlIO_tell(PerlIONext(f)); |
1333 | } |
6f9d8c32 |
1334 | } |
9e353e3b |
1335 | return f; |
760ac839 |
1336 | } |
1337 | |
9e353e3b |
1338 | PerlIO * |
06da4f11 |
1339 | PerlIOBuf_open(PerlIO_funcs *self, const char *path, const char *mode) |
8c86a920 |
1340 | { |
9e353e3b |
1341 | PerlIO_funcs *tab = PerlIO_default_btm(); |
06da4f11 |
1342 | PerlIO *f = (*tab->Open)(tab,path,mode); |
9e353e3b |
1343 | if (f) |
1344 | { |
06da4f11 |
1345 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); |
c3d7c7c9 |
1346 | b->posn = PerlIO_tell(PerlIONext(f)); |
9e353e3b |
1347 | } |
1348 | return f; |
1349 | } |
1350 | |
1351 | int |
c3d7c7c9 |
1352 | PerlIOBuf_reopen(const char *path, const char *mode, PerlIO *f) |
9e353e3b |
1353 | { |
c3d7c7c9 |
1354 | PerlIO *next = PerlIONext(f); |
1355 | int code = (*PerlIOBase(next)->tab->Reopen)(path,mode,next); |
1356 | if (code = 0) |
1357 | code = (*PerlIOBase(f)->tab->Pushed)(f,mode); |
1358 | if (code == 0) |
1359 | { |
1360 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1361 | b->posn = PerlIO_tell(PerlIONext(f)); |
1362 | } |
1363 | return code; |
9e353e3b |
1364 | } |
1365 | |
9e353e3b |
1366 | /* This "flush" is akin to sfio's sync in that it handles files in either |
1367 | read or write state |
1368 | */ |
1369 | IV |
1370 | PerlIOBuf_flush(PerlIO *f) |
6f9d8c32 |
1371 | { |
9e353e3b |
1372 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1373 | int code = 0; |
1374 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1375 | { |
1376 | /* write() the buffer */ |
1377 | STDCHAR *p = b->buf; |
1378 | int count; |
1379 | while (p < b->ptr) |
1380 | { |
1381 | count = PerlIO_write(PerlIONext(f),p,b->ptr - p); |
1382 | if (count > 0) |
1383 | { |
1384 | p += count; |
1385 | } |
1386 | else if (count < 0) |
1387 | { |
1388 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1389 | code = -1; |
1390 | break; |
1391 | } |
1392 | } |
1393 | b->posn += (p - b->buf); |
1394 | } |
1395 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
6f9d8c32 |
1396 | { |
9e353e3b |
1397 | /* Note position change */ |
1398 | b->posn += (b->ptr - b->buf); |
1399 | if (b->ptr < b->end) |
1400 | { |
1401 | /* We did not consume all of it */ |
1402 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0) |
1403 | { |
1404 | b->posn = PerlIO_tell(PerlIONext(f)); |
1405 | } |
1406 | } |
6f9d8c32 |
1407 | } |
9e353e3b |
1408 | b->ptr = b->end = b->buf; |
1409 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
1410 | if (PerlIO_flush(PerlIONext(f)) != 0) |
1411 | code = -1; |
1412 | return code; |
6f9d8c32 |
1413 | } |
1414 | |
06da4f11 |
1415 | IV |
1416 | PerlIOBuf_fill(PerlIO *f) |
1417 | { |
1418 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1419 | SSize_t avail; |
1420 | if (PerlIO_flush(f) != 0) |
1421 | return -1; |
1422 | b->ptr = b->end = b->buf; |
1423 | avail = PerlIO_read(PerlIONext(f),b->ptr,b->bufsiz); |
1424 | if (avail <= 0) |
1425 | { |
1426 | if (avail == 0) |
1427 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
1428 | else |
1429 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1430 | return -1; |
1431 | } |
1432 | b->end = b->buf+avail; |
1433 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
1434 | return 0; |
1435 | } |
1436 | |
6f9d8c32 |
1437 | SSize_t |
9e353e3b |
1438 | PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
1439 | { |
9e353e3b |
1440 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
6f9d8c32 |
1441 | STDCHAR *buf = (STDCHAR *) vbuf; |
1442 | if (f) |
1443 | { |
1444 | Size_t got = 0; |
9e353e3b |
1445 | if (!b->ptr) |
06da4f11 |
1446 | PerlIO_get_base(f); |
9e353e3b |
1447 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
f89522bf |
1448 | return 0; |
6f9d8c32 |
1449 | while (count > 0) |
1450 | { |
9e353e3b |
1451 | SSize_t avail = (b->end - b->ptr); |
6f9d8c32 |
1452 | if ((SSize_t) count < avail) |
1453 | avail = count; |
1454 | if (avail > 0) |
1455 | { |
9e353e3b |
1456 | Copy(b->ptr,buf,avail,char); |
6f9d8c32 |
1457 | got += avail; |
9e353e3b |
1458 | b->ptr += avail; |
6f9d8c32 |
1459 | count -= avail; |
1460 | buf += avail; |
1461 | } |
9e353e3b |
1462 | if (count && (b->ptr >= b->end)) |
6f9d8c32 |
1463 | { |
06da4f11 |
1464 | if (PerlIO_fill(f) != 0) |
1465 | break; |
6f9d8c32 |
1466 | } |
1467 | } |
1468 | return got; |
1469 | } |
1470 | return 0; |
1471 | } |
1472 | |
9e353e3b |
1473 | SSize_t |
1474 | PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
1475 | { |
9e353e3b |
1476 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
1477 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1478 | SSize_t unread = 0; |
1479 | SSize_t avail; |
9e353e3b |
1480 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1481 | PerlIO_flush(f); |
06da4f11 |
1482 | if (!b->buf) |
1483 | PerlIO_get_base(f); |
9e353e3b |
1484 | if (b->buf) |
1485 | { |
1486 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
1487 | { |
1488 | avail = (b->ptr - b->buf); |
1489 | if (avail > (SSize_t) count) |
1490 | avail = count; |
1491 | b->ptr -= avail; |
1492 | } |
1493 | else |
1494 | { |
1495 | avail = b->bufsiz; |
1496 | if (avail > (SSize_t) count) |
1497 | avail = count; |
1498 | b->end = b->ptr + avail; |
1499 | } |
1500 | if (avail > 0) |
1501 | { |
1502 | buf -= avail; |
1503 | if (buf != b->ptr) |
1504 | { |
1505 | Copy(buf,b->ptr,avail,char); |
1506 | } |
1507 | count -= avail; |
1508 | unread += avail; |
1509 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
1510 | } |
1511 | } |
1512 | return unread; |
760ac839 |
1513 | } |
1514 | |
9e353e3b |
1515 | SSize_t |
1516 | PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
1517 | { |
9e353e3b |
1518 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1519 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
1520 | Size_t written = 0; |
1521 | if (!b->buf) |
06da4f11 |
1522 | PerlIO_get_base(f); |
9e353e3b |
1523 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
1524 | return 0; |
1525 | while (count > 0) |
1526 | { |
1527 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); |
1528 | if ((SSize_t) count < avail) |
1529 | avail = count; |
1530 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
1531 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) |
1532 | { |
1533 | while (avail > 0) |
1534 | { |
1535 | int ch = *buf++; |
1536 | *(b->ptr)++ = ch; |
1537 | count--; |
1538 | avail--; |
1539 | written++; |
1540 | if (ch == '\n') |
1541 | { |
1542 | PerlIO_flush(f); |
1543 | break; |
1544 | } |
1545 | } |
1546 | } |
1547 | else |
1548 | { |
1549 | if (avail) |
1550 | { |
1551 | Copy(buf,b->ptr,avail,char); |
1552 | count -= avail; |
1553 | buf += avail; |
1554 | written += avail; |
1555 | b->ptr += avail; |
1556 | } |
1557 | } |
1558 | if (b->ptr >= (b->buf + b->bufsiz)) |
1559 | PerlIO_flush(f); |
1560 | } |
1561 | return written; |
1562 | } |
1563 | |
1564 | IV |
1565 | PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence) |
1566 | { |
1567 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
06da4f11 |
1568 | int code = PerlIO_flush(f); |
9e353e3b |
1569 | if (code == 0) |
1570 | { |
1571 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
1572 | code = PerlIO_seek(PerlIONext(f),offset,whence); |
1573 | if (code == 0) |
1574 | { |
1575 | b->posn = PerlIO_tell(PerlIONext(f)); |
1576 | } |
1577 | } |
1578 | return code; |
1579 | } |
1580 | |
1581 | Off_t |
1582 | PerlIOBuf_tell(PerlIO *f) |
1583 | { |
1584 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1585 | Off_t posn = b->posn; |
1586 | if (b->buf) |
1587 | posn += (b->ptr - b->buf); |
1588 | return posn; |
1589 | } |
1590 | |
1591 | IV |
1592 | PerlIOBuf_close(PerlIO *f) |
1593 | { |
1594 | IV code = PerlIOBase_close(f); |
1595 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1596 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) |
6f9d8c32 |
1597 | { |
9e353e3b |
1598 | Safefree(b->buf); |
6f9d8c32 |
1599 | } |
9e353e3b |
1600 | b->buf = NULL; |
1601 | b->ptr = b->end = b->buf; |
1602 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
1603 | return code; |
760ac839 |
1604 | } |
1605 | |
760ac839 |
1606 | void |
9e353e3b |
1607 | PerlIOBuf_setlinebuf(PerlIO *f) |
760ac839 |
1608 | { |
6f9d8c32 |
1609 | if (f) |
1610 | { |
9e353e3b |
1611 | PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF; |
6f9d8c32 |
1612 | } |
760ac839 |
1613 | } |
1614 | |
9e353e3b |
1615 | STDCHAR * |
1616 | PerlIOBuf_get_ptr(PerlIO *f) |
1617 | { |
1618 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1619 | if (!b->buf) |
06da4f11 |
1620 | PerlIO_get_base(f); |
9e353e3b |
1621 | return b->ptr; |
1622 | } |
1623 | |
05d1247b |
1624 | SSize_t |
9e353e3b |
1625 | PerlIOBuf_get_cnt(PerlIO *f) |
1626 | { |
1627 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1628 | if (!b->buf) |
06da4f11 |
1629 | PerlIO_get_base(f); |
9e353e3b |
1630 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
1631 | return (b->end - b->ptr); |
1632 | return 0; |
1633 | } |
1634 | |
1635 | STDCHAR * |
1636 | PerlIOBuf_get_base(PerlIO *f) |
1637 | { |
1638 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1639 | if (!b->buf) |
06da4f11 |
1640 | { |
1641 | if (!b->bufsiz) |
1642 | b->bufsiz = 4096; |
1643 | New('B',b->buf,b->bufsiz,STDCHAR); |
1644 | if (!b->buf) |
1645 | { |
1646 | b->buf = (STDCHAR *)&b->oneword; |
1647 | b->bufsiz = sizeof(b->oneword); |
1648 | } |
1649 | b->ptr = b->buf; |
1650 | b->end = b->ptr; |
1651 | } |
9e353e3b |
1652 | return b->buf; |
1653 | } |
1654 | |
1655 | Size_t |
1656 | PerlIOBuf_bufsiz(PerlIO *f) |
1657 | { |
1658 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1659 | if (!b->buf) |
06da4f11 |
1660 | PerlIO_get_base(f); |
9e353e3b |
1661 | return (b->end - b->buf); |
1662 | } |
1663 | |
1664 | void |
05d1247b |
1665 | PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
9e353e3b |
1666 | { |
1667 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1668 | if (!b->buf) |
06da4f11 |
1669 | PerlIO_get_base(f); |
9e353e3b |
1670 | b->ptr = ptr; |
1671 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) |
6f9d8c32 |
1672 | { |
9e353e3b |
1673 | dTHX; |
1674 | assert(PerlIO_get_cnt(f) == cnt); |
1675 | assert(b->ptr >= b->buf); |
6f9d8c32 |
1676 | } |
9e353e3b |
1677 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 |
1678 | } |
1679 | |
9e353e3b |
1680 | PerlIO_funcs PerlIO_perlio = { |
1681 | "perlio", |
1682 | sizeof(PerlIOBuf), |
1683 | 0, |
1684 | PerlIOBase_fileno, |
1685 | PerlIOBuf_fdopen, |
1686 | PerlIOBuf_open, |
c3d7c7c9 |
1687 | PerlIOBuf_reopen, |
06da4f11 |
1688 | PerlIOBase_pushed, |
1689 | PerlIOBase_noop_ok, |
9e353e3b |
1690 | PerlIOBuf_read, |
1691 | PerlIOBuf_unread, |
1692 | PerlIOBuf_write, |
1693 | PerlIOBuf_seek, |
1694 | PerlIOBuf_tell, |
1695 | PerlIOBuf_close, |
1696 | PerlIOBuf_flush, |
06da4f11 |
1697 | PerlIOBuf_fill, |
9e353e3b |
1698 | PerlIOBase_eof, |
1699 | PerlIOBase_error, |
1700 | PerlIOBase_clearerr, |
1701 | PerlIOBuf_setlinebuf, |
1702 | PerlIOBuf_get_base, |
1703 | PerlIOBuf_bufsiz, |
1704 | PerlIOBuf_get_ptr, |
1705 | PerlIOBuf_get_cnt, |
1706 | PerlIOBuf_set_ptrcnt, |
1707 | }; |
1708 | |
06da4f11 |
1709 | #ifdef HAS_MMAP |
1710 | /*--------------------------------------------------------------------------------------*/ |
1711 | /* mmap as "buffer" layer */ |
1712 | |
1713 | typedef struct |
1714 | { |
1715 | PerlIOBuf base; /* PerlIOBuf stuff */ |
c3d7c7c9 |
1716 | Mmap_t mptr; /* Mapped address */ |
06da4f11 |
1717 | Size_t len; /* mapped length */ |
1718 | STDCHAR *bbuf; /* malloced buffer if map fails */ |
c3d7c7c9 |
1719 | |
06da4f11 |
1720 | } PerlIOMmap; |
1721 | |
c3d7c7c9 |
1722 | static size_t page_size = 0; |
1723 | |
06da4f11 |
1724 | IV |
1725 | PerlIOMmap_map(PerlIO *f) |
1726 | { |
68d873c6 |
1727 | dTHX; |
06da4f11 |
1728 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1729 | PerlIOBuf *b = &m->base; |
1730 | IV flags = PerlIOBase(f)->flags; |
1731 | IV code = 0; |
1732 | if (m->len) |
1733 | abort(); |
1734 | if (flags & PERLIO_F_CANREAD) |
1735 | { |
1736 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1737 | int fd = PerlIO_fileno(f); |
1738 | struct stat st; |
1739 | code = fstat(fd,&st); |
1740 | if (code == 0 && S_ISREG(st.st_mode)) |
1741 | { |
1742 | SSize_t len = st.st_size - b->posn; |
1743 | if (len > 0) |
1744 | { |
c3d7c7c9 |
1745 | Off_t posn; |
68d873c6 |
1746 | if (!page_size) { |
1747 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE)) |
1748 | { |
1749 | SETERRNO(0,SS$_NORMAL); |
1750 | # ifdef _SC_PAGESIZE |
1751 | page_size = sysconf(_SC_PAGESIZE); |
1752 | # else |
1753 | page_size = sysconf(_SC_PAGE_SIZE); |
14aaf8e8 |
1754 | # endif |
68d873c6 |
1755 | if ((long)page_size < 0) { |
1756 | if (errno) { |
1757 | SV *error = ERRSV; |
1758 | char *msg; |
1759 | STRLEN n_a; |
1760 | (void)SvUPGRADE(error, SVt_PV); |
1761 | msg = SvPVx(error, n_a); |
14aaf8e8 |
1762 | Perl_croak(aTHX_ "panic: sysconf: %s", msg); |
68d873c6 |
1763 | } |
1764 | else |
14aaf8e8 |
1765 | Perl_croak(aTHX_ "panic: sysconf: pagesize unknown"); |
68d873c6 |
1766 | } |
1767 | } |
1768 | #else |
1769 | # ifdef HAS_GETPAGESIZE |
c3d7c7c9 |
1770 | page_size = getpagesize(); |
68d873c6 |
1771 | # else |
1772 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
1773 | page_size = PAGESIZE; /* compiletime, bad */ |
1774 | # endif |
1775 | # endif |
1776 | #endif |
1777 | if ((IV)page_size <= 0) |
14aaf8e8 |
1778 | Perl_croak(aTHX_ "panic: bad pagesize %"IVdf, (IV)page_size); |
68d873c6 |
1779 | } |
c3d7c7c9 |
1780 | if (b->posn < 0) |
1781 | { |
1782 | /* This is a hack - should never happen - open should have set it ! */ |
1783 | b->posn = PerlIO_tell(PerlIONext(f)); |
1784 | } |
1785 | posn = (b->posn / page_size) * page_size; |
1786 | len = st.st_size - posn; |
1787 | m->mptr = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, posn); |
1788 | if (m->mptr && m->mptr != (Mmap_t) -1) |
06da4f11 |
1789 | { |
1790 | #if defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
c3d7c7c9 |
1791 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 |
1792 | #endif |
c3d7c7c9 |
1793 | PerlIOBase(f)->flags = (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; |
1794 | b->end = ((STDCHAR *)m->mptr) + len; |
1795 | b->buf = ((STDCHAR *)m->mptr) + (b->posn - posn); |
1796 | b->ptr = b->buf; |
1797 | m->len = len; |
06da4f11 |
1798 | } |
1799 | else |
1800 | { |
1801 | b->buf = NULL; |
1802 | } |
1803 | } |
1804 | else |
1805 | { |
1806 | PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF; |
1807 | b->buf = NULL; |
1808 | b->ptr = b->end = b->ptr; |
1809 | code = -1; |
1810 | } |
1811 | } |
1812 | } |
1813 | return code; |
1814 | } |
1815 | |
1816 | IV |
1817 | PerlIOMmap_unmap(PerlIO *f) |
1818 | { |
1819 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1820 | PerlIOBuf *b = &m->base; |
1821 | IV code = 0; |
1822 | if (m->len) |
1823 | { |
1824 | if (b->buf) |
1825 | { |
c3d7c7c9 |
1826 | code = munmap(m->mptr, m->len); |
1827 | b->buf = NULL; |
1828 | m->len = 0; |
1829 | m->mptr = NULL; |
06da4f11 |
1830 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0) |
1831 | code = -1; |
06da4f11 |
1832 | } |
1833 | b->ptr = b->end = b->buf; |
1834 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
1835 | } |
1836 | return code; |
1837 | } |
1838 | |
1839 | STDCHAR * |
1840 | PerlIOMmap_get_base(PerlIO *f) |
1841 | { |
1842 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1843 | PerlIOBuf *b = &m->base; |
1844 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
1845 | { |
1846 | /* Already have a readbuffer in progress */ |
1847 | return b->buf; |
1848 | } |
1849 | if (b->buf) |
1850 | { |
1851 | /* We have a write buffer or flushed PerlIOBuf read buffer */ |
1852 | m->bbuf = b->buf; /* save it in case we need it again */ |
1853 | b->buf = NULL; /* Clear to trigger below */ |
1854 | } |
1855 | if (!b->buf) |
1856 | { |
1857 | PerlIOMmap_map(f); /* Try and map it */ |
1858 | if (!b->buf) |
1859 | { |
1860 | /* Map did not work - recover PerlIOBuf buffer if we have one */ |
1861 | b->buf = m->bbuf; |
1862 | } |
1863 | } |
1864 | b->ptr = b->end = b->buf; |
1865 | if (b->buf) |
1866 | return b->buf; |
1867 | return PerlIOBuf_get_base(f); |
1868 | } |
1869 | |
1870 | SSize_t |
1871 | PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count) |
1872 | { |
1873 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1874 | PerlIOBuf *b = &m->base; |
1875 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1876 | PerlIO_flush(f); |
1877 | if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count)) |
1878 | { |
1879 | b->ptr -= count; |
1880 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
1881 | return count; |
1882 | } |
1883 | if (m->len) |
1884 | { |
4a4a6116 |
1885 | /* Loose the unwritable mapped buffer */ |
06da4f11 |
1886 | PerlIO_flush(f); |
c3d7c7c9 |
1887 | /* If flush took the "buffer" see if we have one from before */ |
1888 | if (!b->buf && m->bbuf) |
1889 | b->buf = m->bbuf; |
1890 | if (!b->buf) |
1891 | { |
1892 | PerlIOBuf_get_base(f); |
1893 | m->bbuf = b->buf; |
1894 | } |
06da4f11 |
1895 | } |
1896 | return PerlIOBuf_unread(f,vbuf,count); |
1897 | } |
1898 | |
1899 | SSize_t |
1900 | PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count) |
1901 | { |
1902 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1903 | PerlIOBuf *b = &m->base; |
1904 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) |
1905 | { |
1906 | /* No, or wrong sort of, buffer */ |
1907 | if (m->len) |
1908 | { |
1909 | if (PerlIOMmap_unmap(f) != 0) |
1910 | return 0; |
1911 | } |
1912 | /* If unmap took the "buffer" see if we have one from before */ |
1913 | if (!b->buf && m->bbuf) |
1914 | b->buf = m->bbuf; |
1915 | if (!b->buf) |
1916 | { |
1917 | PerlIOBuf_get_base(f); |
1918 | m->bbuf = b->buf; |
1919 | } |
1920 | } |
1921 | return PerlIOBuf_write(f,vbuf,count); |
1922 | } |
1923 | |
1924 | IV |
1925 | PerlIOMmap_flush(PerlIO *f) |
1926 | { |
1927 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1928 | PerlIOBuf *b = &m->base; |
1929 | IV code = PerlIOBuf_flush(f); |
1930 | /* Now we are "synced" at PerlIOBuf level */ |
1931 | if (b->buf) |
1932 | { |
1933 | if (m->len) |
1934 | { |
1935 | /* Unmap the buffer */ |
1936 | if (PerlIOMmap_unmap(f) != 0) |
1937 | code = -1; |
1938 | } |
1939 | else |
1940 | { |
1941 | /* We seem to have a PerlIOBuf buffer which was not mapped |
1942 | * remember it in case we need one later |
1943 | */ |
1944 | m->bbuf = b->buf; |
1945 | } |
1946 | } |
06da4f11 |
1947 | return code; |
1948 | } |
1949 | |
1950 | IV |
1951 | PerlIOMmap_fill(PerlIO *f) |
1952 | { |
1953 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1954 | IV code = PerlIO_flush(f); |
06da4f11 |
1955 | if (code == 0 && !b->buf) |
1956 | { |
1957 | code = PerlIOMmap_map(f); |
06da4f11 |
1958 | } |
1959 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
1960 | { |
1961 | code = PerlIOBuf_fill(f); |
06da4f11 |
1962 | } |
1963 | return code; |
1964 | } |
1965 | |
1966 | IV |
1967 | PerlIOMmap_close(PerlIO *f) |
1968 | { |
1969 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1970 | PerlIOBuf *b = &m->base; |
1971 | IV code = PerlIO_flush(f); |
1972 | if (m->bbuf) |
1973 | { |
1974 | b->buf = m->bbuf; |
1975 | m->bbuf = NULL; |
1976 | b->ptr = b->end = b->buf; |
1977 | } |
1978 | if (PerlIOBuf_close(f) != 0) |
1979 | code = -1; |
06da4f11 |
1980 | return code; |
1981 | } |
1982 | |
1983 | |
1984 | PerlIO_funcs PerlIO_mmap = { |
1985 | "mmap", |
1986 | sizeof(PerlIOMmap), |
1987 | 0, |
1988 | PerlIOBase_fileno, |
1989 | PerlIOBuf_fdopen, |
1990 | PerlIOBuf_open, |
c3d7c7c9 |
1991 | PerlIOBuf_reopen, |
06da4f11 |
1992 | PerlIOBase_pushed, |
1993 | PerlIOBase_noop_ok, |
1994 | PerlIOBuf_read, |
1995 | PerlIOMmap_unread, |
1996 | PerlIOMmap_write, |
1997 | PerlIOBuf_seek, |
1998 | PerlIOBuf_tell, |
1999 | PerlIOBuf_close, |
2000 | PerlIOMmap_flush, |
2001 | PerlIOMmap_fill, |
2002 | PerlIOBase_eof, |
2003 | PerlIOBase_error, |
2004 | PerlIOBase_clearerr, |
2005 | PerlIOBuf_setlinebuf, |
2006 | PerlIOMmap_get_base, |
2007 | PerlIOBuf_bufsiz, |
2008 | PerlIOBuf_get_ptr, |
2009 | PerlIOBuf_get_cnt, |
2010 | PerlIOBuf_set_ptrcnt, |
2011 | }; |
2012 | |
2013 | #endif /* HAS_MMAP */ |
2014 | |
9e353e3b |
2015 | void |
2016 | PerlIO_init(void) |
760ac839 |
2017 | { |
9e353e3b |
2018 | if (!_perlio) |
6f9d8c32 |
2019 | { |
9e353e3b |
2020 | atexit(&PerlIO_cleanup); |
6f9d8c32 |
2021 | } |
760ac839 |
2022 | } |
2023 | |
9e353e3b |
2024 | #undef PerlIO_stdin |
2025 | PerlIO * |
2026 | PerlIO_stdin(void) |
2027 | { |
2028 | if (!_perlio) |
f3862f8b |
2029 | PerlIO_stdstreams(); |
05d1247b |
2030 | return &_perlio[1]; |
9e353e3b |
2031 | } |
2032 | |
2033 | #undef PerlIO_stdout |
2034 | PerlIO * |
2035 | PerlIO_stdout(void) |
2036 | { |
2037 | if (!_perlio) |
f3862f8b |
2038 | PerlIO_stdstreams(); |
05d1247b |
2039 | return &_perlio[2]; |
9e353e3b |
2040 | } |
2041 | |
2042 | #undef PerlIO_stderr |
2043 | PerlIO * |
2044 | PerlIO_stderr(void) |
2045 | { |
2046 | if (!_perlio) |
f3862f8b |
2047 | PerlIO_stdstreams(); |
05d1247b |
2048 | return &_perlio[3]; |
9e353e3b |
2049 | } |
2050 | |
2051 | /*--------------------------------------------------------------------------------------*/ |
2052 | |
2053 | #undef PerlIO_getname |
2054 | char * |
2055 | PerlIO_getname(PerlIO *f, char *buf) |
2056 | { |
2057 | dTHX; |
2058 | Perl_croak(aTHX_ "Don't know how to get file name"); |
2059 | return NULL; |
2060 | } |
2061 | |
2062 | |
2063 | /*--------------------------------------------------------------------------------------*/ |
2064 | /* Functions which can be called on any kind of PerlIO implemented |
2065 | in terms of above |
2066 | */ |
2067 | |
2068 | #undef PerlIO_getc |
6f9d8c32 |
2069 | int |
9e353e3b |
2070 | PerlIO_getc(PerlIO *f) |
760ac839 |
2071 | { |
313ca112 |
2072 | STDCHAR buf[1]; |
2073 | SSize_t count = PerlIO_read(f,buf,1); |
9e353e3b |
2074 | if (count == 1) |
313ca112 |
2075 | { |
2076 | return (unsigned char) buf[0]; |
2077 | } |
2078 | return EOF; |
2079 | } |
2080 | |
2081 | #undef PerlIO_ungetc |
2082 | int |
2083 | PerlIO_ungetc(PerlIO *f, int ch) |
2084 | { |
2085 | if (ch != EOF) |
2086 | { |
2087 | STDCHAR buf = ch; |
2088 | if (PerlIO_unread(f,&buf,1) == 1) |
2089 | return ch; |
2090 | } |
2091 | return EOF; |
760ac839 |
2092 | } |
2093 | |
9e353e3b |
2094 | #undef PerlIO_putc |
2095 | int |
2096 | PerlIO_putc(PerlIO *f, int ch) |
760ac839 |
2097 | { |
9e353e3b |
2098 | STDCHAR buf = ch; |
2099 | return PerlIO_write(f,&buf,1); |
760ac839 |
2100 | } |
2101 | |
9e353e3b |
2102 | #undef PerlIO_puts |
760ac839 |
2103 | int |
9e353e3b |
2104 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 |
2105 | { |
9e353e3b |
2106 | STRLEN len = strlen(s); |
2107 | return PerlIO_write(f,s,len); |
760ac839 |
2108 | } |
2109 | |
2110 | #undef PerlIO_rewind |
2111 | void |
c78749f2 |
2112 | PerlIO_rewind(PerlIO *f) |
760ac839 |
2113 | { |
6f9d8c32 |
2114 | PerlIO_seek(f,(Off_t)0,SEEK_SET); |
9e353e3b |
2115 | PerlIO_clearerr(f); |
6f9d8c32 |
2116 | } |
2117 | |
2118 | #undef PerlIO_vprintf |
2119 | int |
2120 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) |
2121 | { |
2122 | dTHX; |
bb9950b7 |
2123 | SV *sv = newSVpvn("",0); |
6f9d8c32 |
2124 | char *s; |
2125 | STRLEN len; |
2126 | sv_vcatpvf(sv, fmt, &ap); |
2127 | s = SvPV(sv,len); |
bb9950b7 |
2128 | return PerlIO_write(f,s,len); |
760ac839 |
2129 | } |
2130 | |
2131 | #undef PerlIO_printf |
6f9d8c32 |
2132 | int |
760ac839 |
2133 | PerlIO_printf(PerlIO *f,const char *fmt,...) |
760ac839 |
2134 | { |
2135 | va_list ap; |
2136 | int result; |
760ac839 |
2137 | va_start(ap,fmt); |
6f9d8c32 |
2138 | result = PerlIO_vprintf(f,fmt,ap); |
760ac839 |
2139 | va_end(ap); |
2140 | return result; |
2141 | } |
2142 | |
2143 | #undef PerlIO_stdoutf |
6f9d8c32 |
2144 | int |
760ac839 |
2145 | PerlIO_stdoutf(const char *fmt,...) |
760ac839 |
2146 | { |
2147 | va_list ap; |
2148 | int result; |
760ac839 |
2149 | va_start(ap,fmt); |
760ac839 |
2150 | result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); |
2151 | va_end(ap); |
2152 | return result; |
2153 | } |
2154 | |
2155 | #undef PerlIO_tmpfile |
2156 | PerlIO * |
c78749f2 |
2157 | PerlIO_tmpfile(void) |
760ac839 |
2158 | { |
6f9d8c32 |
2159 | dTHX; |
b1ef6e3b |
2160 | /* I have no idea how portable mkstemp() is ... */ |
6f9d8c32 |
2161 | SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0); |
2162 | int fd = mkstemp(SvPVX(sv)); |
2163 | PerlIO *f = NULL; |
2164 | if (fd >= 0) |
2165 | { |
b1ef6e3b |
2166 | f = PerlIO_fdopen(fd,"w+"); |
6f9d8c32 |
2167 | if (f) |
2168 | { |
9e353e3b |
2169 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; |
6f9d8c32 |
2170 | } |
00b02797 |
2171 | PerlLIO_unlink(SvPVX(sv)); |
6f9d8c32 |
2172 | SvREFCNT_dec(sv); |
2173 | } |
2174 | return f; |
760ac839 |
2175 | } |
2176 | |
6f9d8c32 |
2177 | #undef HAS_FSETPOS |
2178 | #undef HAS_FGETPOS |
2179 | |
760ac839 |
2180 | #endif /* USE_SFIO */ |
2181 | #endif /* PERLIO_IS_STDIO */ |
2182 | |
9e353e3b |
2183 | /*======================================================================================*/ |
2184 | /* Now some functions in terms of above which may be needed even if |
2185 | we are not in true PerlIO mode |
2186 | */ |
2187 | |
760ac839 |
2188 | #ifndef HAS_FSETPOS |
2189 | #undef PerlIO_setpos |
2190 | int |
c78749f2 |
2191 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
760ac839 |
2192 | { |
6f9d8c32 |
2193 | return PerlIO_seek(f,*pos,0); |
760ac839 |
2194 | } |
c411622e |
2195 | #else |
2196 | #ifndef PERLIO_IS_STDIO |
2197 | #undef PerlIO_setpos |
2198 | int |
c78749f2 |
2199 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
c411622e |
2200 | { |
2d4389e4 |
2201 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
2202 | return fsetpos64(f, pos); |
2203 | #else |
c411622e |
2204 | return fsetpos(f, pos); |
d9b3e12d |
2205 | #endif |
c411622e |
2206 | } |
2207 | #endif |
760ac839 |
2208 | #endif |
2209 | |
2210 | #ifndef HAS_FGETPOS |
2211 | #undef PerlIO_getpos |
2212 | int |
c78749f2 |
2213 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
760ac839 |
2214 | { |
2215 | *pos = PerlIO_tell(f); |
a17c7222 |
2216 | return *pos == -1 ? -1 : 0; |
760ac839 |
2217 | } |
c411622e |
2218 | #else |
2219 | #ifndef PERLIO_IS_STDIO |
2220 | #undef PerlIO_getpos |
2221 | int |
c78749f2 |
2222 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
c411622e |
2223 | { |
2d4389e4 |
2224 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
2225 | return fgetpos64(f, pos); |
2226 | #else |
c411622e |
2227 | return fgetpos(f, pos); |
d9b3e12d |
2228 | #endif |
c411622e |
2229 | } |
2230 | #endif |
760ac839 |
2231 | #endif |
2232 | |
2233 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) |
2234 | |
2235 | int |
c78749f2 |
2236 | vprintf(char *pat, char *args) |
662a7e3f |
2237 | { |
2238 | _doprnt(pat, args, stdout); |
2239 | return 0; /* wrong, but perl doesn't use the return value */ |
2240 | } |
2241 | |
2242 | int |
c78749f2 |
2243 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 |
2244 | { |
2245 | _doprnt(pat, args, fd); |
2246 | return 0; /* wrong, but perl doesn't use the return value */ |
2247 | } |
2248 | |
2249 | #endif |
2250 | |
2251 | #ifndef PerlIO_vsprintf |
6f9d8c32 |
2252 | int |
8ac85365 |
2253 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 |
2254 | { |
2255 | int val = vsprintf(s, fmt, ap); |
2256 | if (n >= 0) |
2257 | { |
8c86a920 |
2258 | if (strlen(s) >= (STRLEN)n) |
760ac839 |
2259 | { |
bf49b057 |
2260 | dTHX; |
fb4a9925 |
2261 | (void)PerlIO_puts(Perl_error_log, |
2262 | "panic: sprintf overflow - memory corrupted!\n"); |
bf49b057 |
2263 | my_exit(1); |
760ac839 |
2264 | } |
2265 | } |
2266 | return val; |
2267 | } |
2268 | #endif |
2269 | |
2270 | #ifndef PerlIO_sprintf |
6f9d8c32 |
2271 | int |
760ac839 |
2272 | PerlIO_sprintf(char *s, int n, const char *fmt,...) |
760ac839 |
2273 | { |
2274 | va_list ap; |
2275 | int result; |
760ac839 |
2276 | va_start(ap,fmt); |
760ac839 |
2277 | result = PerlIO_vsprintf(s, n, fmt, ap); |
2278 | va_end(ap); |
2279 | return result; |
2280 | } |
2281 | #endif |
2282 | |
c5be433b |
2283 | #endif /* !PERL_IMPLICIT_SYS */ |
2284 | |