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760ac839 |
1 | /* perlio.c |
2 | * |
1761cee5 |
3 | * Copyright (c) 1996-2000, Nick Ing-Simmons |
760ac839 |
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 | |
6f9d8c32 |
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 |
88b61e10 |
23 | * which are not #defined in perlio.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 | |
ac27b0f5 |
31 | #ifndef PERLIO_LAYERS |
32 | int |
33 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
34 | { |
95c70f20 |
35 | if (!names || !*names || strEQ(names,":crlf") || strEQ(names,":raw")) |
36 | { |
37 | return 0; |
88b61e10 |
38 | } |
ac27b0f5 |
39 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl",names); |
5a2dd417 |
40 | /* NOTREACHED */ |
88b61e10 |
41 | return -1; |
ac27b0f5 |
42 | } |
43 | #endif |
44 | |
32e30700 |
45 | #if !defined(PERL_IMPLICIT_SYS) |
46 | |
6f9d8c32 |
47 | #ifdef PERLIO_IS_STDIO |
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48 | |
49 | void |
8ac85365 |
50 | PerlIO_init(void) |
760ac839 |
51 | { |
6f9d8c32 |
52 | /* Does nothing (yet) except force this file to be included |
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53 | in perl binary. That allows this file to force inclusion |
6f9d8c32 |
54 | of other functions that may be required by loadable |
55 | extensions e.g. for FileHandle::tmpfile |
760ac839 |
56 | */ |
57 | } |
58 | |
33dcbb9a |
59 | #undef PerlIO_tmpfile |
60 | PerlIO * |
8ac85365 |
61 | PerlIO_tmpfile(void) |
33dcbb9a |
62 | { |
63 | return tmpfile(); |
64 | } |
65 | |
760ac839 |
66 | #else /* PERLIO_IS_STDIO */ |
67 | |
68 | #ifdef USE_SFIO |
69 | |
70 | #undef HAS_FSETPOS |
71 | #undef HAS_FGETPOS |
72 | |
6f9d8c32 |
73 | /* This section is just to make sure these functions |
760ac839 |
74 | get pulled in from libsfio.a |
75 | */ |
76 | |
77 | #undef PerlIO_tmpfile |
78 | PerlIO * |
c78749f2 |
79 | PerlIO_tmpfile(void) |
760ac839 |
80 | { |
81 | return sftmp(0); |
82 | } |
83 | |
84 | void |
c78749f2 |
85 | PerlIO_init(void) |
760ac839 |
86 | { |
6f9d8c32 |
87 | /* Force this file to be included in perl binary. Which allows |
88 | * this file to force inclusion of other functions that may be |
89 | * required by loadable extensions e.g. for FileHandle::tmpfile |
760ac839 |
90 | */ |
91 | |
92 | /* Hack |
93 | * sfio does its own 'autoflush' on stdout in common cases. |
6f9d8c32 |
94 | * Flush results in a lot of lseek()s to regular files and |
760ac839 |
95 | * lot of small writes to pipes. |
96 | */ |
97 | sfset(sfstdout,SF_SHARE,0); |
98 | } |
99 | |
17c3b450 |
100 | #else /* USE_SFIO */ |
6f9d8c32 |
101 | /*======================================================================================*/ |
6f9d8c32 |
102 | /* Implement all the PerlIO interface ourselves. |
9e353e3b |
103 | */ |
760ac839 |
104 | |
76ced9ad |
105 | #include "perliol.h" |
106 | |
b1ef6e3b |
107 | /* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */ |
02f66e2f |
108 | #ifdef I_UNISTD |
109 | #include <unistd.h> |
110 | #endif |
06da4f11 |
111 | #ifdef HAS_MMAP |
112 | #include <sys/mman.h> |
113 | #endif |
114 | |
f3862f8b |
115 | #include "XSUB.h" |
02f66e2f |
116 | |
88b61e10 |
117 | void PerlIO_debug(const char *fmt,...) __attribute__((format(__printf__,1,2))); |
6f9d8c32 |
118 | |
6f9d8c32 |
119 | void |
88b61e10 |
120 | PerlIO_debug(const char *fmt,...) |
6f9d8c32 |
121 | { |
122 | static int dbg = 0; |
88b61e10 |
123 | va_list ap; |
124 | va_start(ap,fmt); |
6f9d8c32 |
125 | if (!dbg) |
126 | { |
00b02797 |
127 | char *s = PerlEnv_getenv("PERLIO_DEBUG"); |
6f9d8c32 |
128 | if (s && *s) |
00b02797 |
129 | dbg = PerlLIO_open3(s,O_WRONLY|O_CREAT|O_APPEND,0666); |
6f9d8c32 |
130 | else |
131 | dbg = -1; |
132 | } |
133 | if (dbg > 0) |
134 | { |
135 | dTHX; |
6f9d8c32 |
136 | SV *sv = newSVpvn("",0); |
137 | char *s; |
138 | STRLEN len; |
05d1247b |
139 | s = CopFILE(PL_curcop); |
140 | if (!s) |
141 | s = "(none)"; |
142 | Perl_sv_catpvf(aTHX_ sv, "%s:%"IVdf" ", s, (IV)CopLINE(PL_curcop)); |
c7fc522f |
143 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
144 | |
6f9d8c32 |
145 | s = SvPV(sv,len); |
00b02797 |
146 | PerlLIO_write(dbg,s,len); |
6f9d8c32 |
147 | SvREFCNT_dec(sv); |
148 | } |
88b61e10 |
149 | va_end(ap); |
6f9d8c32 |
150 | } |
151 | |
9e353e3b |
152 | /*--------------------------------------------------------------------------------------*/ |
153 | |
9e353e3b |
154 | /* Inner level routines */ |
155 | |
b1ef6e3b |
156 | /* Table of pointers to the PerlIO structs (malloc'ed) */ |
05d1247b |
157 | PerlIO *_perlio = NULL; |
158 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 |
159 | |
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160 | PerlIO * |
6f9d8c32 |
161 | PerlIO_allocate(void) |
162 | { |
f3862f8b |
163 | /* Find a free slot in the table, allocating new table as necessary */ |
05d1247b |
164 | PerlIO **last = &_perlio; |
6f9d8c32 |
165 | PerlIO *f; |
05d1247b |
166 | while ((f = *last)) |
6f9d8c32 |
167 | { |
05d1247b |
168 | int i; |
169 | last = (PerlIO **)(f); |
170 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
6f9d8c32 |
171 | { |
05d1247b |
172 | if (!*++f) |
6f9d8c32 |
173 | { |
6f9d8c32 |
174 | return f; |
175 | } |
6f9d8c32 |
176 | } |
6f9d8c32 |
177 | } |
05d1247b |
178 | Newz('I',f,PERLIO_TABLE_SIZE,PerlIO); |
179 | if (!f) |
180 | return NULL; |
181 | *last = f; |
182 | return f+1; |
183 | } |
184 | |
185 | void |
186 | PerlIO_cleantable(PerlIO **tablep) |
187 | { |
188 | PerlIO *table = *tablep; |
189 | if (table) |
190 | { |
191 | int i; |
192 | PerlIO_cleantable((PerlIO **) &(table[0])); |
193 | for (i=PERLIO_TABLE_SIZE-1; i > 0; i--) |
194 | { |
195 | PerlIO *f = table+i; |
196 | if (*f) |
197 | PerlIO_close(f); |
198 | } |
199 | Safefree(table); |
200 | *tablep = NULL; |
201 | } |
202 | } |
203 | |
4a4a6116 |
204 | HV *PerlIO_layer_hv; |
205 | AV *PerlIO_layer_av; |
206 | |
05d1247b |
207 | void |
208 | PerlIO_cleanup(void) |
209 | { |
210 | PerlIO_cleantable(&_perlio); |
6f9d8c32 |
211 | } |
212 | |
9e353e3b |
213 | void |
214 | PerlIO_pop(PerlIO *f) |
760ac839 |
215 | { |
9e353e3b |
216 | PerlIOl *l = *f; |
217 | if (l) |
6f9d8c32 |
218 | { |
06da4f11 |
219 | (*l->tab->Popped)(f); |
9e353e3b |
220 | *f = l->next; |
221 | Safefree(l); |
6f9d8c32 |
222 | } |
6f9d8c32 |
223 | } |
224 | |
9e353e3b |
225 | /*--------------------------------------------------------------------------------------*/ |
b931b1d9 |
226 | /* XS Interface for perl code */ |
9e353e3b |
227 | |
b931b1d9 |
228 | XS(XS_perlio_import) |
f3862f8b |
229 | { |
230 | dXSARGS; |
231 | GV *gv = CvGV(cv); |
232 | char *s = GvNAME(gv); |
233 | STRLEN l = GvNAMELEN(gv); |
234 | PerlIO_debug("%.*s\n",(int) l,s); |
235 | XSRETURN_EMPTY; |
236 | } |
237 | |
b931b1d9 |
238 | XS(XS_perlio_unimport) |
f3862f8b |
239 | { |
240 | dXSARGS; |
241 | GV *gv = CvGV(cv); |
242 | char *s = GvNAME(gv); |
243 | STRLEN l = GvNAMELEN(gv); |
244 | PerlIO_debug("%.*s\n",(int) l,s); |
245 | XSRETURN_EMPTY; |
246 | } |
247 | |
f3862f8b |
248 | SV * |
ac27b0f5 |
249 | PerlIO_find_layer(const char *name, STRLEN len) |
f3862f8b |
250 | { |
251 | dTHX; |
252 | SV **svp; |
253 | SV *sv; |
254 | if (len <= 0) |
255 | len = strlen(name); |
256 | svp = hv_fetch(PerlIO_layer_hv,name,len,0); |
257 | if (svp && (sv = *svp) && SvROK(sv)) |
258 | return *svp; |
259 | return NULL; |
260 | } |
261 | |
b13b2135 |
262 | |
263 | static int |
264 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) |
265 | { |
266 | if (SvROK(sv)) |
267 | { |
b931b1d9 |
268 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 |
269 | PerlIO *ifp = IoIFP(io); |
270 | PerlIO *ofp = IoOFP(io); |
271 | AV *av = (AV *) mg->mg_obj; |
272 | Perl_warn(aTHX_ "set %_ %p %p %p",sv,io,ifp,ofp); |
273 | } |
274 | return 0; |
275 | } |
276 | |
277 | static int |
278 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) |
279 | { |
280 | if (SvROK(sv)) |
281 | { |
b931b1d9 |
282 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 |
283 | PerlIO *ifp = IoIFP(io); |
284 | PerlIO *ofp = IoOFP(io); |
285 | AV *av = (AV *) mg->mg_obj; |
286 | Perl_warn(aTHX_ "get %_ %p %p %p",sv,io,ifp,ofp); |
287 | } |
288 | return 0; |
289 | } |
290 | |
291 | static int |
292 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) |
293 | { |
294 | Perl_warn(aTHX_ "clear %_",sv); |
295 | return 0; |
296 | } |
297 | |
298 | static int |
299 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) |
300 | { |
301 | Perl_warn(aTHX_ "free %_",sv); |
302 | return 0; |
303 | } |
304 | |
305 | MGVTBL perlio_vtab = { |
306 | perlio_mg_get, |
307 | perlio_mg_set, |
308 | NULL, /* len */ |
309 | NULL, |
310 | perlio_mg_free |
311 | }; |
312 | |
313 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
314 | { |
315 | dXSARGS; |
316 | SV *sv = SvRV(ST(1)); |
317 | AV *av = newAV(); |
318 | MAGIC *mg; |
319 | int count = 0; |
320 | int i; |
321 | sv_magic(sv, (SV *)av, '~', NULL, 0); |
322 | SvRMAGICAL_off(sv); |
323 | mg = mg_find(sv,'~'); |
324 | mg->mg_virtual = &perlio_vtab; |
325 | mg_magical(sv); |
326 | Perl_warn(aTHX_ "attrib %_",sv); |
327 | for (i=2; i < items; i++) |
328 | { |
329 | STRLEN len; |
ac27b0f5 |
330 | const char *name = SvPV(ST(i),len); |
b13b2135 |
331 | SV *layer = PerlIO_find_layer(name,len); |
332 | if (layer) |
333 | { |
334 | av_push(av,SvREFCNT_inc(layer)); |
335 | } |
336 | else |
337 | { |
338 | ST(count) = ST(i); |
339 | count++; |
340 | } |
341 | } |
342 | SvREFCNT_dec(av); |
343 | XSRETURN(count); |
344 | } |
345 | |
f3862f8b |
346 | void |
347 | PerlIO_define_layer(PerlIO_funcs *tab) |
348 | { |
349 | dTHX; |
b931b1d9 |
350 | HV *stash = gv_stashpv("perlio::Layer", TRUE); |
e7778b43 |
351 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash); |
f3862f8b |
352 | hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),sv,0); |
353 | } |
354 | |
355 | PerlIO_funcs * |
356 | PerlIO_default_layer(I32 n) |
357 | { |
358 | dTHX; |
359 | SV **svp; |
360 | SV *layer; |
361 | PerlIO_funcs *tab = &PerlIO_stdio; |
362 | int len; |
363 | if (!PerlIO_layer_hv) |
364 | { |
ac27b0f5 |
365 | const char *s = PerlEnv_getenv("PERLIO"); |
b931b1d9 |
366 | newXS("perlio::import",XS_perlio_import,__FILE__); |
367 | newXS("perlio::unimport",XS_perlio_unimport,__FILE__); |
368 | #if 0 |
b13b2135 |
369 | newXS("io::MODIFY_SCALAR_ATTRIBUTES",XS_io_MODIFY_SCALAR_ATTRIBUTES,__FILE__); |
b931b1d9 |
370 | #endif |
371 | PerlIO_layer_hv = get_hv("open::layers",GV_ADD|GV_ADDMULTI); |
372 | PerlIO_layer_av = get_av("open::layers",GV_ADD|GV_ADDMULTI); |
f3862f8b |
373 | PerlIO_define_layer(&PerlIO_unix); |
f3862f8b |
374 | PerlIO_define_layer(&PerlIO_perlio); |
375 | PerlIO_define_layer(&PerlIO_stdio); |
66ecd56b |
376 | PerlIO_define_layer(&PerlIO_crlf); |
06da4f11 |
377 | #ifdef HAS_MMAP |
378 | PerlIO_define_layer(&PerlIO_mmap); |
379 | #endif |
f3862f8b |
380 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_unix.name,0))); |
381 | if (s) |
382 | { |
383 | while (*s) |
384 | { |
00b02797 |
385 | while (*s && isSPACE((unsigned char)*s)) |
f3862f8b |
386 | s++; |
387 | if (*s) |
388 | { |
ac27b0f5 |
389 | const char *e = s; |
f3862f8b |
390 | SV *layer; |
00b02797 |
391 | while (*e && !isSPACE((unsigned char)*e)) |
f3862f8b |
392 | e++; |
ac27b0f5 |
393 | if (*s == ':') |
394 | s++; |
f3862f8b |
395 | layer = PerlIO_find_layer(s,e-s); |
396 | if (layer) |
397 | { |
398 | PerlIO_debug("Pushing %.*s\n",(e-s),s); |
399 | av_push(PerlIO_layer_av,SvREFCNT_inc(layer)); |
400 | } |
401 | else |
ef0f9817 |
402 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(e-s),s); |
f3862f8b |
403 | s = e; |
404 | } |
405 | } |
406 | } |
407 | } |
408 | len = av_len(PerlIO_layer_av); |
409 | if (len < 1) |
410 | { |
411 | if (PerlIO_stdio.Set_ptrcnt) |
412 | { |
413 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_stdio.name,0))); |
414 | } |
415 | else |
416 | { |
417 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_perlio.name,0))); |
418 | } |
419 | len = av_len(PerlIO_layer_av); |
420 | } |
421 | if (n < 0) |
422 | n += len+1; |
423 | svp = av_fetch(PerlIO_layer_av,n,0); |
424 | if (svp && (layer = *svp) && SvROK(layer) && SvIOK((layer = SvRV(layer)))) |
425 | { |
e7778b43 |
426 | tab = INT2PTR(PerlIO_funcs *, SvIV(layer)); |
f3862f8b |
427 | } |
428 | /* PerlIO_debug("Layer %d is %s\n",n,tab->name); */ |
429 | return tab; |
430 | } |
431 | |
ac27b0f5 |
432 | int |
433 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
434 | { |
435 | if (names) |
436 | { |
437 | const char *s = names; |
438 | while (*s) |
439 | { |
440 | while (isSPACE(*s)) |
441 | s++; |
442 | if (*s == ':') |
443 | s++; |
444 | if (*s) |
445 | { |
446 | const char *e = s; |
447 | while (*e && *e != ':' && !isSPACE(*e)) |
448 | e++; |
449 | if (e > s) |
450 | { |
451 | SV *layer = PerlIO_find_layer(s,e-s); |
452 | if (layer) |
453 | { |
66ecd56b |
454 | PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer))); |
ac27b0f5 |
455 | if (tab) |
456 | { |
457 | PerlIO *new = PerlIO_push(f,tab,mode); |
458 | if (!new) |
459 | return -1; |
460 | } |
461 | } |
462 | else |
463 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(e-s),s); |
464 | } |
465 | s = e; |
466 | } |
467 | } |
468 | } |
469 | return 0; |
470 | } |
471 | |
f3862f8b |
472 | #define PerlIO_default_top() PerlIO_default_layer(-1) |
473 | #define PerlIO_default_btm() PerlIO_default_layer(0) |
474 | |
475 | void |
476 | PerlIO_stdstreams() |
477 | { |
478 | if (!_perlio) |
479 | { |
480 | PerlIO_allocate(); |
481 | PerlIO_fdopen(0,"Ir"); |
482 | PerlIO_fdopen(1,"Iw"); |
483 | PerlIO_fdopen(2,"Iw"); |
484 | } |
485 | } |
9e353e3b |
486 | |
76ced9ad |
487 | PerlIO * |
488 | PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode) |
489 | { |
490 | PerlIOl *l = NULL; |
491 | Newc('L',l,tab->size,char,PerlIOl); |
492 | if (l) |
493 | { |
494 | Zero(l,tab->size,char); |
495 | l->next = *f; |
496 | l->tab = tab; |
497 | *f = l; |
498 | if ((*l->tab->Pushed)(f,mode) != 0) |
499 | { |
500 | PerlIO_pop(f); |
501 | return NULL; |
502 | } |
503 | } |
504 | return f; |
505 | } |
506 | |
b931b1d9 |
507 | /*--------------------------------------------------------------------------------------*/ |
508 | /* Given the abstraction above the public API functions */ |
509 | |
510 | #undef PerlIO_close |
511 | int |
512 | PerlIO_close(PerlIO *f) |
513 | { |
514 | int code = (*PerlIOBase(f)->tab->Close)(f); |
515 | while (*f) |
516 | { |
517 | PerlIO_pop(f); |
518 | } |
519 | return code; |
520 | } |
521 | |
522 | #undef PerlIO_fileno |
523 | int |
524 | PerlIO_fileno(PerlIO *f) |
525 | { |
526 | return (*PerlIOBase(f)->tab->Fileno)(f); |
527 | } |
528 | |
529 | |
530 | |
9e353e3b |
531 | #undef PerlIO_fdopen |
532 | PerlIO * |
533 | PerlIO_fdopen(int fd, const char *mode) |
534 | { |
535 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
536 | if (!_perlio) |
537 | PerlIO_stdstreams(); |
06da4f11 |
538 | return (*tab->Fdopen)(tab,fd,mode); |
9e353e3b |
539 | } |
540 | |
6f9d8c32 |
541 | #undef PerlIO_open |
542 | PerlIO * |
543 | PerlIO_open(const char *path, const char *mode) |
544 | { |
9e353e3b |
545 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
546 | if (!_perlio) |
547 | PerlIO_stdstreams(); |
06da4f11 |
548 | return (*tab->Open)(tab,path,mode); |
6f9d8c32 |
549 | } |
550 | |
9e353e3b |
551 | #undef PerlIO_reopen |
552 | PerlIO * |
553 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) |
6f9d8c32 |
554 | { |
9e353e3b |
555 | if (f) |
6f9d8c32 |
556 | { |
9e353e3b |
557 | PerlIO_flush(f); |
558 | if ((*PerlIOBase(f)->tab->Reopen)(path,mode,f) == 0) |
559 | { |
06da4f11 |
560 | if ((*PerlIOBase(f)->tab->Pushed)(f,mode) == 0) |
561 | return f; |
9e353e3b |
562 | } |
563 | return NULL; |
6f9d8c32 |
564 | } |
9e353e3b |
565 | else |
566 | return PerlIO_open(path,mode); |
760ac839 |
567 | } |
568 | |
9e353e3b |
569 | #undef PerlIO_read |
570 | SSize_t |
571 | PerlIO_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
572 | { |
9e353e3b |
573 | return (*PerlIOBase(f)->tab->Read)(f,vbuf,count); |
760ac839 |
574 | } |
575 | |
313ca112 |
576 | #undef PerlIO_unread |
577 | SSize_t |
578 | PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
579 | { |
313ca112 |
580 | return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count); |
760ac839 |
581 | } |
582 | |
9e353e3b |
583 | #undef PerlIO_write |
584 | SSize_t |
585 | PerlIO_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
586 | { |
9e353e3b |
587 | return (*PerlIOBase(f)->tab->Write)(f,vbuf,count); |
760ac839 |
588 | } |
589 | |
9e353e3b |
590 | #undef PerlIO_seek |
6f9d8c32 |
591 | int |
9e353e3b |
592 | PerlIO_seek(PerlIO *f, Off_t offset, int whence) |
760ac839 |
593 | { |
9e353e3b |
594 | return (*PerlIOBase(f)->tab->Seek)(f,offset,whence); |
760ac839 |
595 | } |
596 | |
9e353e3b |
597 | #undef PerlIO_tell |
598 | Off_t |
599 | PerlIO_tell(PerlIO *f) |
760ac839 |
600 | { |
9e353e3b |
601 | return (*PerlIOBase(f)->tab->Tell)(f); |
760ac839 |
602 | } |
603 | |
9e353e3b |
604 | #undef PerlIO_flush |
6f9d8c32 |
605 | int |
9e353e3b |
606 | PerlIO_flush(PerlIO *f) |
760ac839 |
607 | { |
6f9d8c32 |
608 | if (f) |
609 | { |
9e353e3b |
610 | return (*PerlIOBase(f)->tab->Flush)(f); |
6f9d8c32 |
611 | } |
9e353e3b |
612 | else |
6f9d8c32 |
613 | { |
05d1247b |
614 | PerlIO **table = &_perlio; |
9e353e3b |
615 | int code = 0; |
05d1247b |
616 | while ((f = *table)) |
6f9d8c32 |
617 | { |
05d1247b |
618 | int i; |
619 | table = (PerlIO **)(f++); |
620 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
9e353e3b |
621 | { |
622 | if (*f && PerlIO_flush(f) != 0) |
623 | code = -1; |
05d1247b |
624 | f++; |
9e353e3b |
625 | } |
6f9d8c32 |
626 | } |
9e353e3b |
627 | return code; |
6f9d8c32 |
628 | } |
760ac839 |
629 | } |
630 | |
06da4f11 |
631 | #undef PerlIO_fill |
632 | int |
633 | PerlIO_fill(PerlIO *f) |
634 | { |
635 | return (*PerlIOBase(f)->tab->Fill)(f); |
636 | } |
637 | |
f3862f8b |
638 | #undef PerlIO_isutf8 |
639 | int |
640 | PerlIO_isutf8(PerlIO *f) |
641 | { |
642 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; |
643 | } |
644 | |
9e353e3b |
645 | #undef PerlIO_eof |
6f9d8c32 |
646 | int |
9e353e3b |
647 | PerlIO_eof(PerlIO *f) |
760ac839 |
648 | { |
9e353e3b |
649 | return (*PerlIOBase(f)->tab->Eof)(f); |
650 | } |
651 | |
652 | #undef PerlIO_error |
653 | int |
654 | PerlIO_error(PerlIO *f) |
655 | { |
656 | return (*PerlIOBase(f)->tab->Error)(f); |
657 | } |
658 | |
659 | #undef PerlIO_clearerr |
660 | void |
661 | PerlIO_clearerr(PerlIO *f) |
662 | { |
663 | (*PerlIOBase(f)->tab->Clearerr)(f); |
664 | } |
665 | |
666 | #undef PerlIO_setlinebuf |
667 | void |
668 | PerlIO_setlinebuf(PerlIO *f) |
669 | { |
670 | (*PerlIOBase(f)->tab->Setlinebuf)(f); |
671 | } |
672 | |
673 | #undef PerlIO_has_base |
674 | int |
675 | PerlIO_has_base(PerlIO *f) |
676 | { |
677 | if (f && *f) |
6f9d8c32 |
678 | { |
9e353e3b |
679 | return (PerlIOBase(f)->tab->Get_base != NULL); |
6f9d8c32 |
680 | } |
9e353e3b |
681 | return 0; |
760ac839 |
682 | } |
683 | |
9e353e3b |
684 | #undef PerlIO_fast_gets |
685 | int |
686 | PerlIO_fast_gets(PerlIO *f) |
760ac839 |
687 | { |
9e353e3b |
688 | if (f && *f) |
6f9d8c32 |
689 | { |
c7fc522f |
690 | PerlIOl *l = PerlIOBase(f); |
691 | return (l->tab->Set_ptrcnt != NULL); |
6f9d8c32 |
692 | } |
9e353e3b |
693 | return 0; |
694 | } |
695 | |
696 | #undef PerlIO_has_cntptr |
697 | int |
698 | PerlIO_has_cntptr(PerlIO *f) |
699 | { |
700 | if (f && *f) |
701 | { |
702 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
703 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); |
704 | } |
705 | return 0; |
706 | } |
707 | |
708 | #undef PerlIO_canset_cnt |
709 | int |
710 | PerlIO_canset_cnt(PerlIO *f) |
711 | { |
712 | if (f && *f) |
713 | { |
c7fc522f |
714 | PerlIOl *l = PerlIOBase(f); |
715 | return (l->tab->Set_ptrcnt != NULL); |
9e353e3b |
716 | } |
c7fc522f |
717 | return 0; |
760ac839 |
718 | } |
719 | |
720 | #undef PerlIO_get_base |
888911fc |
721 | STDCHAR * |
a20bf0c3 |
722 | PerlIO_get_base(PerlIO *f) |
760ac839 |
723 | { |
9e353e3b |
724 | return (*PerlIOBase(f)->tab->Get_base)(f); |
725 | } |
726 | |
727 | #undef PerlIO_get_bufsiz |
728 | int |
729 | PerlIO_get_bufsiz(PerlIO *f) |
730 | { |
731 | return (*PerlIOBase(f)->tab->Get_bufsiz)(f); |
732 | } |
733 | |
734 | #undef PerlIO_get_ptr |
735 | STDCHAR * |
736 | PerlIO_get_ptr(PerlIO *f) |
737 | { |
738 | return (*PerlIOBase(f)->tab->Get_ptr)(f); |
739 | } |
740 | |
741 | #undef PerlIO_get_cnt |
05d1247b |
742 | int |
9e353e3b |
743 | PerlIO_get_cnt(PerlIO *f) |
744 | { |
745 | return (*PerlIOBase(f)->tab->Get_cnt)(f); |
746 | } |
747 | |
748 | #undef PerlIO_set_cnt |
749 | void |
05d1247b |
750 | PerlIO_set_cnt(PerlIO *f,int cnt) |
9e353e3b |
751 | { |
f3862f8b |
752 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt); |
9e353e3b |
753 | } |
754 | |
755 | #undef PerlIO_set_ptrcnt |
756 | void |
05d1247b |
757 | PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) |
9e353e3b |
758 | { |
f3862f8b |
759 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt); |
9e353e3b |
760 | } |
761 | |
762 | /*--------------------------------------------------------------------------------------*/ |
763 | /* "Methods" of the "base class" */ |
764 | |
765 | IV |
766 | PerlIOBase_fileno(PerlIO *f) |
767 | { |
768 | return PerlIO_fileno(PerlIONext(f)); |
769 | } |
770 | |
76ced9ad |
771 | IV |
772 | PerlIOBase_pushed(PerlIO *f, const char *mode) |
9e353e3b |
773 | { |
76ced9ad |
774 | PerlIOl *l = PerlIOBase(f); |
775 | l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
776 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); |
777 | if (mode) |
6f9d8c32 |
778 | { |
76ced9ad |
779 | switch (*mode++) |
06da4f11 |
780 | { |
76ced9ad |
781 | case 'r': |
782 | l->flags = PERLIO_F_CANREAD; |
783 | break; |
784 | case 'a': |
785 | l->flags = PERLIO_F_APPEND|PERLIO_F_CANWRITE; |
786 | break; |
787 | case 'w': |
788 | l->flags = PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE; |
789 | break; |
790 | default: |
791 | errno = EINVAL; |
792 | return -1; |
793 | } |
794 | while (*mode) |
795 | { |
796 | switch (*mode++) |
797 | { |
798 | case '+': |
799 | l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE; |
800 | break; |
801 | case 'b': |
802 | l->flags |= PERLIO_F_BINARY; |
803 | break; |
804 | default: |
805 | errno = EINVAL; |
806 | return -1; |
807 | } |
06da4f11 |
808 | } |
6f9d8c32 |
809 | } |
76ced9ad |
810 | else |
811 | { |
812 | if (l->next) |
813 | { |
814 | l->flags |= l->next->flags & |
815 | (PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
816 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); |
817 | } |
818 | } |
819 | return 0; |
820 | } |
821 | |
822 | IV |
823 | PerlIOBase_popped(PerlIO *f) |
824 | { |
825 | return 0; |
760ac839 |
826 | } |
827 | |
9e353e3b |
828 | SSize_t |
829 | PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count) |
830 | { |
831 | Off_t old = PerlIO_tell(f); |
832 | if (PerlIO_seek(f,-((Off_t)count),SEEK_CUR) == 0) |
833 | { |
834 | Off_t new = PerlIO_tell(f); |
835 | return old - new; |
836 | } |
837 | return 0; |
838 | } |
839 | |
840 | IV |
06da4f11 |
841 | PerlIOBase_noop_ok(PerlIO *f) |
9e353e3b |
842 | { |
843 | return 0; |
844 | } |
845 | |
846 | IV |
06da4f11 |
847 | PerlIOBase_noop_fail(PerlIO *f) |
848 | { |
849 | return -1; |
850 | } |
851 | |
852 | IV |
9e353e3b |
853 | PerlIOBase_close(PerlIO *f) |
854 | { |
855 | IV code = 0; |
856 | if (PerlIO_flush(f) != 0) |
857 | code = -1; |
858 | if (PerlIO_close(PerlIONext(f)) != 0) |
859 | code = -1; |
860 | PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN); |
861 | return code; |
862 | } |
863 | |
864 | IV |
865 | PerlIOBase_eof(PerlIO *f) |
866 | { |
867 | if (f && *f) |
868 | { |
869 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
870 | } |
871 | return 1; |
872 | } |
873 | |
874 | IV |
875 | PerlIOBase_error(PerlIO *f) |
876 | { |
877 | if (f && *f) |
878 | { |
879 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
880 | } |
881 | return 1; |
882 | } |
883 | |
884 | void |
885 | PerlIOBase_clearerr(PerlIO *f) |
886 | { |
887 | if (f && *f) |
888 | { |
889 | PerlIOBase(f)->flags &= ~PERLIO_F_ERROR; |
890 | } |
891 | } |
892 | |
893 | void |
894 | PerlIOBase_setlinebuf(PerlIO *f) |
895 | { |
896 | |
897 | } |
898 | |
9e353e3b |
899 | /*--------------------------------------------------------------------------------------*/ |
900 | /* Bottom-most level for UNIX-like case */ |
901 | |
902 | typedef struct |
903 | { |
904 | struct _PerlIO base; /* The generic part */ |
905 | int fd; /* UNIX like file descriptor */ |
906 | int oflags; /* open/fcntl flags */ |
907 | } PerlIOUnix; |
908 | |
6f9d8c32 |
909 | int |
9e353e3b |
910 | PerlIOUnix_oflags(const char *mode) |
760ac839 |
911 | { |
9e353e3b |
912 | int oflags = -1; |
913 | switch(*mode) |
914 | { |
915 | case 'r': |
916 | oflags = O_RDONLY; |
917 | if (*++mode == '+') |
918 | { |
919 | oflags = O_RDWR; |
920 | mode++; |
921 | } |
922 | break; |
923 | |
924 | case 'w': |
925 | oflags = O_CREAT|O_TRUNC; |
926 | if (*++mode == '+') |
927 | { |
928 | oflags |= O_RDWR; |
929 | mode++; |
930 | } |
931 | else |
932 | oflags |= O_WRONLY; |
933 | break; |
934 | |
935 | case 'a': |
936 | oflags = O_CREAT|O_APPEND; |
937 | if (*++mode == '+') |
938 | { |
939 | oflags |= O_RDWR; |
940 | mode++; |
941 | } |
942 | else |
943 | oflags |= O_WRONLY; |
944 | break; |
945 | } |
83b075c3 |
946 | if (*mode == 'b') |
947 | { |
948 | oflags |= O_BINARY; |
949 | mode++; |
950 | } |
9e353e3b |
951 | if (*mode || oflags == -1) |
6f9d8c32 |
952 | { |
9e353e3b |
953 | errno = EINVAL; |
954 | oflags = -1; |
6f9d8c32 |
955 | } |
9e353e3b |
956 | return oflags; |
957 | } |
958 | |
959 | IV |
960 | PerlIOUnix_fileno(PerlIO *f) |
961 | { |
962 | return PerlIOSelf(f,PerlIOUnix)->fd; |
963 | } |
964 | |
965 | PerlIO * |
06da4f11 |
966 | PerlIOUnix_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
967 | { |
968 | PerlIO *f = NULL; |
c7fc522f |
969 | if (*mode == 'I') |
970 | mode++; |
9e353e3b |
971 | if (fd >= 0) |
972 | { |
973 | int oflags = PerlIOUnix_oflags(mode); |
974 | if (oflags != -1) |
975 | { |
06da4f11 |
976 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); |
9e353e3b |
977 | s->fd = fd; |
978 | s->oflags = oflags; |
979 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
980 | } |
981 | } |
982 | return f; |
983 | } |
984 | |
985 | PerlIO * |
06da4f11 |
986 | PerlIOUnix_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
987 | { |
988 | PerlIO *f = NULL; |
989 | int oflags = PerlIOUnix_oflags(mode); |
990 | if (oflags != -1) |
991 | { |
00b02797 |
992 | int fd = PerlLIO_open3(path,oflags,0666); |
9e353e3b |
993 | if (fd >= 0) |
994 | { |
06da4f11 |
995 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); |
9e353e3b |
996 | s->fd = fd; |
997 | s->oflags = oflags; |
998 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
999 | } |
1000 | } |
1001 | return f; |
760ac839 |
1002 | } |
1003 | |
760ac839 |
1004 | int |
9e353e3b |
1005 | PerlIOUnix_reopen(const char *path, const char *mode, PerlIO *f) |
760ac839 |
1006 | { |
9e353e3b |
1007 | PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix); |
1008 | int oflags = PerlIOUnix_oflags(mode); |
1009 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
1010 | (*PerlIOBase(f)->tab->Close)(f); |
1011 | if (oflags != -1) |
1012 | { |
00b02797 |
1013 | int fd = PerlLIO_open3(path,oflags,0666); |
9e353e3b |
1014 | if (fd >= 0) |
1015 | { |
1016 | s->fd = fd; |
1017 | s->oflags = oflags; |
1018 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
1019 | return 0; |
1020 | } |
1021 | } |
1022 | return -1; |
1023 | } |
1024 | |
1025 | SSize_t |
1026 | PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count) |
1027 | { |
1028 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
8f24bd79 |
1029 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
1030 | return 0; |
9e353e3b |
1031 | while (1) |
1032 | { |
00b02797 |
1033 | SSize_t len = PerlLIO_read(fd,vbuf,count); |
9e353e3b |
1034 | if (len >= 0 || errno != EINTR) |
06da4f11 |
1035 | { |
1036 | if (len < 0) |
1037 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1038 | else if (len == 0 && count != 0) |
1039 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
1040 | return len; |
1041 | } |
9e353e3b |
1042 | } |
1043 | } |
1044 | |
1045 | SSize_t |
1046 | PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count) |
1047 | { |
1048 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1049 | while (1) |
1050 | { |
00b02797 |
1051 | SSize_t len = PerlLIO_write(fd,vbuf,count); |
9e353e3b |
1052 | if (len >= 0 || errno != EINTR) |
06da4f11 |
1053 | { |
1054 | if (len < 0) |
1055 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1056 | return len; |
1057 | } |
9e353e3b |
1058 | } |
1059 | } |
1060 | |
1061 | IV |
1062 | PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence) |
1063 | { |
00b02797 |
1064 | Off_t new = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence); |
06da4f11 |
1065 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
9e353e3b |
1066 | return (new == (Off_t) -1) ? -1 : 0; |
1067 | } |
1068 | |
1069 | Off_t |
1070 | PerlIOUnix_tell(PerlIO *f) |
1071 | { |
00b02797 |
1072 | return PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
9e353e3b |
1073 | } |
1074 | |
1075 | IV |
1076 | PerlIOUnix_close(PerlIO *f) |
1077 | { |
1078 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1079 | int code = 0; |
00b02797 |
1080 | while (PerlLIO_close(fd) != 0) |
9e353e3b |
1081 | { |
1082 | if (errno != EINTR) |
1083 | { |
1084 | code = -1; |
1085 | break; |
1086 | } |
1087 | } |
1088 | if (code == 0) |
1089 | { |
1090 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
1091 | } |
1092 | return code; |
1093 | } |
1094 | |
1095 | PerlIO_funcs PerlIO_unix = { |
1096 | "unix", |
1097 | sizeof(PerlIOUnix), |
1098 | 0, |
1099 | PerlIOUnix_fileno, |
1100 | PerlIOUnix_fdopen, |
1101 | PerlIOUnix_open, |
1102 | PerlIOUnix_reopen, |
06da4f11 |
1103 | PerlIOBase_pushed, |
1104 | PerlIOBase_noop_ok, |
9e353e3b |
1105 | PerlIOUnix_read, |
1106 | PerlIOBase_unread, |
1107 | PerlIOUnix_write, |
1108 | PerlIOUnix_seek, |
1109 | PerlIOUnix_tell, |
1110 | PerlIOUnix_close, |
76ced9ad |
1111 | PerlIOBase_noop_ok, /* flush */ |
1112 | PerlIOBase_noop_fail, /* fill */ |
9e353e3b |
1113 | PerlIOBase_eof, |
1114 | PerlIOBase_error, |
1115 | PerlIOBase_clearerr, |
1116 | PerlIOBase_setlinebuf, |
1117 | NULL, /* get_base */ |
1118 | NULL, /* get_bufsiz */ |
1119 | NULL, /* get_ptr */ |
1120 | NULL, /* get_cnt */ |
1121 | NULL, /* set_ptrcnt */ |
1122 | }; |
1123 | |
1124 | /*--------------------------------------------------------------------------------------*/ |
1125 | /* stdio as a layer */ |
1126 | |
1127 | typedef struct |
1128 | { |
1129 | struct _PerlIO base; |
1130 | FILE * stdio; /* The stream */ |
1131 | } PerlIOStdio; |
1132 | |
1133 | IV |
1134 | PerlIOStdio_fileno(PerlIO *f) |
1135 | { |
1136 | return fileno(PerlIOSelf(f,PerlIOStdio)->stdio); |
1137 | } |
1138 | |
1139 | |
1140 | PerlIO * |
06da4f11 |
1141 | PerlIOStdio_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
1142 | { |
1143 | PerlIO *f = NULL; |
c7fc522f |
1144 | int init = 0; |
1145 | if (*mode == 'I') |
1146 | { |
1147 | init = 1; |
1148 | mode++; |
1149 | } |
9e353e3b |
1150 | if (fd >= 0) |
1151 | { |
c7fc522f |
1152 | FILE *stdio = NULL; |
1153 | if (init) |
1154 | { |
1155 | switch(fd) |
1156 | { |
1157 | case 0: |
1158 | stdio = stdin; |
1159 | break; |
1160 | case 1: |
1161 | stdio = stdout; |
1162 | break; |
1163 | case 2: |
1164 | stdio = stderr; |
1165 | break; |
1166 | } |
1167 | } |
1168 | else |
1169 | stdio = fdopen(fd,mode); |
9e353e3b |
1170 | if (stdio) |
1171 | { |
06da4f11 |
1172 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); |
9e353e3b |
1173 | s->stdio = stdio; |
1174 | } |
1175 | } |
1176 | return f; |
1177 | } |
1178 | |
1179 | #undef PerlIO_importFILE |
1180 | PerlIO * |
1181 | PerlIO_importFILE(FILE *stdio, int fl) |
1182 | { |
1183 | PerlIO *f = NULL; |
1184 | if (stdio) |
1185 | { |
1186 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,"r+"),PerlIOStdio); |
1187 | s->stdio = stdio; |
1188 | } |
1189 | return f; |
1190 | } |
1191 | |
1192 | PerlIO * |
06da4f11 |
1193 | PerlIOStdio_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
1194 | { |
1195 | PerlIO *f = NULL; |
1196 | FILE *stdio = fopen(path,mode); |
1197 | if (stdio) |
1198 | { |
06da4f11 |
1199 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); |
9e353e3b |
1200 | s->stdio = stdio; |
1201 | } |
1202 | return f; |
760ac839 |
1203 | } |
1204 | |
6f9d8c32 |
1205 | int |
9e353e3b |
1206 | PerlIOStdio_reopen(const char *path, const char *mode, PerlIO *f) |
1207 | { |
1208 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); |
1209 | FILE *stdio = freopen(path,mode,s->stdio); |
1210 | if (!s->stdio) |
1211 | return -1; |
1212 | s->stdio = stdio; |
1213 | return 0; |
1214 | } |
1215 | |
1216 | SSize_t |
1217 | PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count) |
1218 | { |
1219 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
c7fc522f |
1220 | SSize_t got = 0; |
9e353e3b |
1221 | if (count == 1) |
1222 | { |
1223 | STDCHAR *buf = (STDCHAR *) vbuf; |
1224 | /* Perl is expecting PerlIO_getc() to fill the buffer |
1225 | * Linux's stdio does not do that for fread() |
1226 | */ |
1227 | int ch = fgetc(s); |
1228 | if (ch != EOF) |
1229 | { |
1230 | *buf = ch; |
c7fc522f |
1231 | got = 1; |
9e353e3b |
1232 | } |
9e353e3b |
1233 | } |
c7fc522f |
1234 | else |
1235 | got = fread(vbuf,1,count,s); |
1236 | return got; |
9e353e3b |
1237 | } |
1238 | |
1239 | SSize_t |
1240 | PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count) |
1241 | { |
1242 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
1243 | STDCHAR *buf = ((STDCHAR *)vbuf)+count-1; |
1244 | SSize_t unread = 0; |
1245 | while (count > 0) |
1246 | { |
1247 | int ch = *buf-- & 0xff; |
1248 | if (ungetc(ch,s) != ch) |
1249 | break; |
1250 | unread++; |
1251 | count--; |
1252 | } |
1253 | return unread; |
1254 | } |
1255 | |
1256 | SSize_t |
1257 | PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count) |
1258 | { |
1259 | return fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio); |
1260 | } |
1261 | |
1262 | IV |
1263 | PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence) |
1264 | { |
c7fc522f |
1265 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1266 | return fseek(stdio,offset,whence); |
9e353e3b |
1267 | } |
1268 | |
1269 | Off_t |
1270 | PerlIOStdio_tell(PerlIO *f) |
1271 | { |
c7fc522f |
1272 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1273 | return ftell(stdio); |
9e353e3b |
1274 | } |
1275 | |
1276 | IV |
1277 | PerlIOStdio_close(PerlIO *f) |
1278 | { |
1279 | return fclose(PerlIOSelf(f,PerlIOStdio)->stdio); |
1280 | } |
1281 | |
1282 | IV |
1283 | PerlIOStdio_flush(PerlIO *f) |
1284 | { |
1285 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
88b61e10 |
1286 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) |
1287 | { |
1288 | return fflush(stdio); |
1289 | } |
1290 | else |
1291 | { |
1292 | #if 0 |
1293 | /* FIXME: This discards ungetc() and pre-read stuff which is |
1294 | not right if this is just a "sync" from a layer above |
1295 | Suspect right design is to do _this_ but not have layer above |
1296 | flush this layer read-to-read |
1297 | */ |
1298 | /* Not writeable - sync by attempting a seek */ |
1299 | int err = errno; |
1300 | if (fseek(stdio,(Off_t) 0, SEEK_CUR) != 0) |
1301 | errno = err; |
1302 | #endif |
1303 | } |
1304 | return 0; |
9e353e3b |
1305 | } |
1306 | |
1307 | IV |
06da4f11 |
1308 | PerlIOStdio_fill(PerlIO *f) |
1309 | { |
1310 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1311 | int c; |
1312 | if (fflush(stdio) != 0) |
1313 | return EOF; |
1314 | c = fgetc(stdio); |
1315 | if (c == EOF || ungetc(c,stdio) != c) |
1316 | return EOF; |
1317 | return 0; |
1318 | } |
1319 | |
1320 | IV |
9e353e3b |
1321 | PerlIOStdio_eof(PerlIO *f) |
1322 | { |
1323 | return feof(PerlIOSelf(f,PerlIOStdio)->stdio); |
1324 | } |
1325 | |
1326 | IV |
1327 | PerlIOStdio_error(PerlIO *f) |
1328 | { |
1329 | return ferror(PerlIOSelf(f,PerlIOStdio)->stdio); |
1330 | } |
1331 | |
1332 | void |
1333 | PerlIOStdio_clearerr(PerlIO *f) |
1334 | { |
1335 | clearerr(PerlIOSelf(f,PerlIOStdio)->stdio); |
1336 | } |
1337 | |
1338 | void |
1339 | PerlIOStdio_setlinebuf(PerlIO *f) |
1340 | { |
1341 | #ifdef HAS_SETLINEBUF |
1342 | setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio); |
1343 | #else |
1344 | setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0); |
1345 | #endif |
1346 | } |
1347 | |
1348 | #ifdef FILE_base |
1349 | STDCHAR * |
1350 | PerlIOStdio_get_base(PerlIO *f) |
1351 | { |
1352 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1353 | return FILE_base(stdio); |
1354 | } |
1355 | |
1356 | Size_t |
1357 | PerlIOStdio_get_bufsiz(PerlIO *f) |
1358 | { |
1359 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1360 | return FILE_bufsiz(stdio); |
1361 | } |
1362 | #endif |
1363 | |
1364 | #ifdef USE_STDIO_PTR |
1365 | STDCHAR * |
1366 | PerlIOStdio_get_ptr(PerlIO *f) |
1367 | { |
1368 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1369 | return FILE_ptr(stdio); |
1370 | } |
1371 | |
1372 | SSize_t |
1373 | PerlIOStdio_get_cnt(PerlIO *f) |
1374 | { |
1375 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1376 | return FILE_cnt(stdio); |
1377 | } |
1378 | |
1379 | void |
1380 | PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt) |
1381 | { |
1382 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1383 | if (ptr != NULL) |
1384 | { |
1385 | #ifdef STDIO_PTR_LVALUE |
1386 | FILE_ptr(stdio) = ptr; |
1387 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
1388 | if (FILE_cnt(stdio) != (cnt)) |
1389 | { |
1390 | dTHX; |
1391 | assert(FILE_cnt(stdio) == (cnt)); |
1392 | } |
1393 | #endif |
1394 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) |
1395 | /* Setting ptr _does_ change cnt - we are done */ |
1396 | return; |
1397 | #endif |
1398 | #else /* STDIO_PTR_LVALUE */ |
1399 | abort(); |
1400 | #endif /* STDIO_PTR_LVALUE */ |
1401 | } |
1402 | /* Now (or only) set cnt */ |
1403 | #ifdef STDIO_CNT_LVALUE |
1404 | FILE_cnt(stdio) = cnt; |
1405 | #else /* STDIO_CNT_LVALUE */ |
1406 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
1407 | FILE_ptr(stdio) = FILE_ptr(stdio)+(FILE_cnt(stdio)-cnt); |
1408 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
1409 | abort(); |
1410 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
1411 | #endif /* STDIO_CNT_LVALUE */ |
1412 | } |
1413 | |
1414 | #endif |
1415 | |
1416 | PerlIO_funcs PerlIO_stdio = { |
1417 | "stdio", |
1418 | sizeof(PerlIOStdio), |
1419 | 0, |
1420 | PerlIOStdio_fileno, |
1421 | PerlIOStdio_fdopen, |
1422 | PerlIOStdio_open, |
1423 | PerlIOStdio_reopen, |
06da4f11 |
1424 | PerlIOBase_pushed, |
1425 | PerlIOBase_noop_ok, |
9e353e3b |
1426 | PerlIOStdio_read, |
1427 | PerlIOStdio_unread, |
1428 | PerlIOStdio_write, |
1429 | PerlIOStdio_seek, |
1430 | PerlIOStdio_tell, |
1431 | PerlIOStdio_close, |
1432 | PerlIOStdio_flush, |
06da4f11 |
1433 | PerlIOStdio_fill, |
9e353e3b |
1434 | PerlIOStdio_eof, |
1435 | PerlIOStdio_error, |
1436 | PerlIOStdio_clearerr, |
1437 | PerlIOStdio_setlinebuf, |
1438 | #ifdef FILE_base |
1439 | PerlIOStdio_get_base, |
1440 | PerlIOStdio_get_bufsiz, |
1441 | #else |
1442 | NULL, |
1443 | NULL, |
1444 | #endif |
1445 | #ifdef USE_STDIO_PTR |
1446 | PerlIOStdio_get_ptr, |
1447 | PerlIOStdio_get_cnt, |
0eb1d8a4 |
1448 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) |
9e353e3b |
1449 | PerlIOStdio_set_ptrcnt |
1450 | #else /* STDIO_PTR_LVALUE */ |
1451 | NULL |
1452 | #endif /* STDIO_PTR_LVALUE */ |
1453 | #else /* USE_STDIO_PTR */ |
1454 | NULL, |
1455 | NULL, |
1456 | NULL |
1457 | #endif /* USE_STDIO_PTR */ |
1458 | }; |
1459 | |
1460 | #undef PerlIO_exportFILE |
1461 | FILE * |
1462 | PerlIO_exportFILE(PerlIO *f, int fl) |
1463 | { |
1464 | PerlIO_flush(f); |
1465 | /* Should really push stdio discipline when we have them */ |
1466 | return fdopen(PerlIO_fileno(f),"r+"); |
1467 | } |
1468 | |
1469 | #undef PerlIO_findFILE |
1470 | FILE * |
1471 | PerlIO_findFILE(PerlIO *f) |
1472 | { |
1473 | return PerlIO_exportFILE(f,0); |
1474 | } |
1475 | |
1476 | #undef PerlIO_releaseFILE |
1477 | void |
1478 | PerlIO_releaseFILE(PerlIO *p, FILE *f) |
1479 | { |
1480 | } |
1481 | |
1482 | /*--------------------------------------------------------------------------------------*/ |
1483 | /* perlio buffer layer */ |
1484 | |
9e353e3b |
1485 | PerlIO * |
06da4f11 |
1486 | PerlIOBuf_fdopen(PerlIO_funcs *self, int fd, const char *mode) |
9e353e3b |
1487 | { |
1488 | PerlIO_funcs *tab = PerlIO_default_btm(); |
c7fc522f |
1489 | int init = 0; |
1490 | PerlIO *f; |
1491 | if (*mode == 'I') |
1492 | { |
1493 | init = 1; |
1494 | mode++; |
1495 | } |
06da4f11 |
1496 | f = (*tab->Fdopen)(tab,fd,mode); |
6f9d8c32 |
1497 | if (f) |
1498 | { |
c7fc522f |
1499 | /* Initial stderr is unbuffered */ |
1500 | if (!init || fd != 2) |
1501 | { |
06da4f11 |
1502 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); |
c7fc522f |
1503 | b->posn = PerlIO_tell(PerlIONext(f)); |
1504 | } |
6f9d8c32 |
1505 | } |
9e353e3b |
1506 | return f; |
760ac839 |
1507 | } |
1508 | |
9e353e3b |
1509 | PerlIO * |
06da4f11 |
1510 | PerlIOBuf_open(PerlIO_funcs *self, const char *path, const char *mode) |
8c86a920 |
1511 | { |
9e353e3b |
1512 | PerlIO_funcs *tab = PerlIO_default_btm(); |
06da4f11 |
1513 | PerlIO *f = (*tab->Open)(tab,path,mode); |
9e353e3b |
1514 | if (f) |
1515 | { |
06da4f11 |
1516 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); |
c3d7c7c9 |
1517 | b->posn = PerlIO_tell(PerlIONext(f)); |
9e353e3b |
1518 | } |
1519 | return f; |
1520 | } |
1521 | |
1522 | int |
c3d7c7c9 |
1523 | PerlIOBuf_reopen(const char *path, const char *mode, PerlIO *f) |
9e353e3b |
1524 | { |
c3d7c7c9 |
1525 | PerlIO *next = PerlIONext(f); |
1526 | int code = (*PerlIOBase(next)->tab->Reopen)(path,mode,next); |
1527 | if (code = 0) |
1528 | code = (*PerlIOBase(f)->tab->Pushed)(f,mode); |
1529 | if (code == 0) |
1530 | { |
1531 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1532 | b->posn = PerlIO_tell(PerlIONext(f)); |
1533 | } |
1534 | return code; |
9e353e3b |
1535 | } |
1536 | |
9e353e3b |
1537 | /* This "flush" is akin to sfio's sync in that it handles files in either |
1538 | read or write state |
1539 | */ |
1540 | IV |
1541 | PerlIOBuf_flush(PerlIO *f) |
6f9d8c32 |
1542 | { |
9e353e3b |
1543 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1544 | int code = 0; |
1545 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1546 | { |
1547 | /* write() the buffer */ |
1548 | STDCHAR *p = b->buf; |
1549 | int count; |
1550 | while (p < b->ptr) |
1551 | { |
1552 | count = PerlIO_write(PerlIONext(f),p,b->ptr - p); |
1553 | if (count > 0) |
1554 | { |
1555 | p += count; |
1556 | } |
1557 | else if (count < 0) |
1558 | { |
1559 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1560 | code = -1; |
1561 | break; |
1562 | } |
1563 | } |
1564 | b->posn += (p - b->buf); |
1565 | } |
1566 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
6f9d8c32 |
1567 | { |
9e353e3b |
1568 | /* Note position change */ |
1569 | b->posn += (b->ptr - b->buf); |
1570 | if (b->ptr < b->end) |
1571 | { |
1572 | /* We did not consume all of it */ |
1573 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0) |
1574 | { |
1575 | b->posn = PerlIO_tell(PerlIONext(f)); |
1576 | } |
1577 | } |
6f9d8c32 |
1578 | } |
9e353e3b |
1579 | b->ptr = b->end = b->buf; |
1580 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
88b61e10 |
1581 | /* FIXME: Is this right for read case ? */ |
9e353e3b |
1582 | if (PerlIO_flush(PerlIONext(f)) != 0) |
1583 | code = -1; |
1584 | return code; |
6f9d8c32 |
1585 | } |
1586 | |
06da4f11 |
1587 | IV |
1588 | PerlIOBuf_fill(PerlIO *f) |
1589 | { |
1590 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
88b61e10 |
1591 | PerlIO *n = PerlIONext(f); |
06da4f11 |
1592 | SSize_t avail; |
88b61e10 |
1593 | /* FIXME: doing the down-stream flush is a bad idea if it causes |
1594 | pre-read data in stdio buffer to be discarded |
1595 | but this is too simplistic - as it skips _our_ hosekeeping |
1596 | and breaks tell tests. |
1597 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
1598 | { |
1599 | } |
1600 | */ |
06da4f11 |
1601 | if (PerlIO_flush(f) != 0) |
1602 | return -1; |
88b61e10 |
1603 | |
06da4f11 |
1604 | b->ptr = b->end = b->buf; |
88b61e10 |
1605 | if (PerlIO_fast_gets(n)) |
1606 | { |
1607 | /* Layer below is also buffered |
1608 | * We do _NOT_ want to call its ->Read() because that will loop |
1609 | * till it gets what we asked for which may hang on a pipe etc. |
1610 | * Instead take anything it has to hand, or ask it to fill _once_. |
1611 | */ |
1612 | avail = PerlIO_get_cnt(n); |
1613 | if (avail <= 0) |
1614 | { |
1615 | avail = PerlIO_fill(n); |
1616 | if (avail == 0) |
1617 | avail = PerlIO_get_cnt(n); |
1618 | else |
1619 | { |
1620 | if (!PerlIO_error(n) && PerlIO_eof(n)) |
1621 | avail = 0; |
1622 | } |
1623 | } |
1624 | if (avail > 0) |
1625 | { |
1626 | STDCHAR *ptr = PerlIO_get_ptr(n); |
1627 | SSize_t cnt = avail; |
1628 | if (avail > b->bufsiz) |
1629 | avail = b->bufsiz; |
1630 | Copy(ptr,b->buf,avail,STDCHAR); |
1631 | PerlIO_set_ptrcnt(n,ptr+avail,cnt-avail); |
1632 | } |
1633 | } |
1634 | else |
1635 | { |
1636 | avail = PerlIO_read(n,b->ptr,b->bufsiz); |
1637 | } |
06da4f11 |
1638 | if (avail <= 0) |
1639 | { |
1640 | if (avail == 0) |
1641 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
1642 | else |
1643 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1644 | return -1; |
1645 | } |
1646 | b->end = b->buf+avail; |
1647 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
1648 | return 0; |
1649 | } |
1650 | |
6f9d8c32 |
1651 | SSize_t |
9e353e3b |
1652 | PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
1653 | { |
9e353e3b |
1654 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
6f9d8c32 |
1655 | STDCHAR *buf = (STDCHAR *) vbuf; |
1656 | if (f) |
1657 | { |
1658 | Size_t got = 0; |
9e353e3b |
1659 | if (!b->ptr) |
06da4f11 |
1660 | PerlIO_get_base(f); |
9e353e3b |
1661 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
f89522bf |
1662 | return 0; |
6f9d8c32 |
1663 | while (count > 0) |
1664 | { |
9e353e3b |
1665 | SSize_t avail = (b->end - b->ptr); |
6f9d8c32 |
1666 | if ((SSize_t) count < avail) |
1667 | avail = count; |
1668 | if (avail > 0) |
1669 | { |
88b61e10 |
1670 | Copy(b->ptr,buf,avail,STDCHAR); |
6f9d8c32 |
1671 | got += avail; |
9e353e3b |
1672 | b->ptr += avail; |
6f9d8c32 |
1673 | count -= avail; |
1674 | buf += avail; |
1675 | } |
9e353e3b |
1676 | if (count && (b->ptr >= b->end)) |
6f9d8c32 |
1677 | { |
06da4f11 |
1678 | if (PerlIO_fill(f) != 0) |
1679 | break; |
6f9d8c32 |
1680 | } |
1681 | } |
1682 | return got; |
1683 | } |
1684 | return 0; |
1685 | } |
1686 | |
9e353e3b |
1687 | SSize_t |
1688 | PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
1689 | { |
9e353e3b |
1690 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
1691 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1692 | SSize_t unread = 0; |
1693 | SSize_t avail; |
9e353e3b |
1694 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1695 | PerlIO_flush(f); |
06da4f11 |
1696 | if (!b->buf) |
1697 | PerlIO_get_base(f); |
9e353e3b |
1698 | if (b->buf) |
1699 | { |
1700 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
1701 | { |
1702 | avail = (b->ptr - b->buf); |
1703 | if (avail > (SSize_t) count) |
1704 | avail = count; |
1705 | b->ptr -= avail; |
1706 | } |
1707 | else |
1708 | { |
1709 | avail = b->bufsiz; |
1710 | if (avail > (SSize_t) count) |
1711 | avail = count; |
1712 | b->end = b->ptr + avail; |
1713 | } |
1714 | if (avail > 0) |
1715 | { |
1716 | buf -= avail; |
1717 | if (buf != b->ptr) |
1718 | { |
88b61e10 |
1719 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b |
1720 | } |
1721 | count -= avail; |
1722 | unread += avail; |
1723 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
1724 | } |
1725 | } |
1726 | return unread; |
760ac839 |
1727 | } |
1728 | |
9e353e3b |
1729 | SSize_t |
1730 | PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
1731 | { |
9e353e3b |
1732 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1733 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
1734 | Size_t written = 0; |
1735 | if (!b->buf) |
06da4f11 |
1736 | PerlIO_get_base(f); |
9e353e3b |
1737 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
1738 | return 0; |
1739 | while (count > 0) |
1740 | { |
1741 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); |
1742 | if ((SSize_t) count < avail) |
1743 | avail = count; |
1744 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
1745 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) |
1746 | { |
1747 | while (avail > 0) |
1748 | { |
1749 | int ch = *buf++; |
1750 | *(b->ptr)++ = ch; |
1751 | count--; |
1752 | avail--; |
1753 | written++; |
1754 | if (ch == '\n') |
1755 | { |
1756 | PerlIO_flush(f); |
1757 | break; |
1758 | } |
1759 | } |
1760 | } |
1761 | else |
1762 | { |
1763 | if (avail) |
1764 | { |
88b61e10 |
1765 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b |
1766 | count -= avail; |
1767 | buf += avail; |
1768 | written += avail; |
1769 | b->ptr += avail; |
1770 | } |
1771 | } |
1772 | if (b->ptr >= (b->buf + b->bufsiz)) |
1773 | PerlIO_flush(f); |
1774 | } |
1775 | return written; |
1776 | } |
1777 | |
1778 | IV |
1779 | PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence) |
1780 | { |
1781 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
06da4f11 |
1782 | int code = PerlIO_flush(f); |
9e353e3b |
1783 | if (code == 0) |
1784 | { |
1785 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
1786 | code = PerlIO_seek(PerlIONext(f),offset,whence); |
1787 | if (code == 0) |
1788 | { |
1789 | b->posn = PerlIO_tell(PerlIONext(f)); |
1790 | } |
1791 | } |
1792 | return code; |
1793 | } |
1794 | |
1795 | Off_t |
1796 | PerlIOBuf_tell(PerlIO *f) |
1797 | { |
1798 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1799 | Off_t posn = b->posn; |
1800 | if (b->buf) |
1801 | posn += (b->ptr - b->buf); |
1802 | return posn; |
1803 | } |
1804 | |
1805 | IV |
1806 | PerlIOBuf_close(PerlIO *f) |
1807 | { |
1808 | IV code = PerlIOBase_close(f); |
1809 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1810 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) |
6f9d8c32 |
1811 | { |
9e353e3b |
1812 | Safefree(b->buf); |
6f9d8c32 |
1813 | } |
9e353e3b |
1814 | b->buf = NULL; |
1815 | b->ptr = b->end = b->buf; |
1816 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
1817 | return code; |
760ac839 |
1818 | } |
1819 | |
760ac839 |
1820 | void |
9e353e3b |
1821 | PerlIOBuf_setlinebuf(PerlIO *f) |
760ac839 |
1822 | { |
6f9d8c32 |
1823 | if (f) |
1824 | { |
9e353e3b |
1825 | PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF; |
6f9d8c32 |
1826 | } |
760ac839 |
1827 | } |
1828 | |
9e353e3b |
1829 | STDCHAR * |
1830 | PerlIOBuf_get_ptr(PerlIO *f) |
1831 | { |
1832 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1833 | if (!b->buf) |
06da4f11 |
1834 | PerlIO_get_base(f); |
9e353e3b |
1835 | return b->ptr; |
1836 | } |
1837 | |
05d1247b |
1838 | SSize_t |
9e353e3b |
1839 | PerlIOBuf_get_cnt(PerlIO *f) |
1840 | { |
1841 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1842 | if (!b->buf) |
06da4f11 |
1843 | PerlIO_get_base(f); |
9e353e3b |
1844 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
1845 | return (b->end - b->ptr); |
1846 | return 0; |
1847 | } |
1848 | |
1849 | STDCHAR * |
1850 | PerlIOBuf_get_base(PerlIO *f) |
1851 | { |
1852 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1853 | if (!b->buf) |
06da4f11 |
1854 | { |
1855 | if (!b->bufsiz) |
1856 | b->bufsiz = 4096; |
1857 | New('B',b->buf,b->bufsiz,STDCHAR); |
1858 | if (!b->buf) |
1859 | { |
1860 | b->buf = (STDCHAR *)&b->oneword; |
1861 | b->bufsiz = sizeof(b->oneword); |
1862 | } |
1863 | b->ptr = b->buf; |
1864 | b->end = b->ptr; |
1865 | } |
9e353e3b |
1866 | return b->buf; |
1867 | } |
1868 | |
1869 | Size_t |
1870 | PerlIOBuf_bufsiz(PerlIO *f) |
1871 | { |
1872 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1873 | if (!b->buf) |
06da4f11 |
1874 | PerlIO_get_base(f); |
9e353e3b |
1875 | return (b->end - b->buf); |
1876 | } |
1877 | |
1878 | void |
05d1247b |
1879 | PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
9e353e3b |
1880 | { |
1881 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1882 | if (!b->buf) |
06da4f11 |
1883 | PerlIO_get_base(f); |
9e353e3b |
1884 | b->ptr = ptr; |
1885 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) |
6f9d8c32 |
1886 | { |
9e353e3b |
1887 | dTHX; |
1888 | assert(PerlIO_get_cnt(f) == cnt); |
1889 | assert(b->ptr >= b->buf); |
6f9d8c32 |
1890 | } |
9e353e3b |
1891 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 |
1892 | } |
1893 | |
9e353e3b |
1894 | PerlIO_funcs PerlIO_perlio = { |
1895 | "perlio", |
1896 | sizeof(PerlIOBuf), |
1897 | 0, |
1898 | PerlIOBase_fileno, |
1899 | PerlIOBuf_fdopen, |
1900 | PerlIOBuf_open, |
c3d7c7c9 |
1901 | PerlIOBuf_reopen, |
06da4f11 |
1902 | PerlIOBase_pushed, |
1903 | PerlIOBase_noop_ok, |
9e353e3b |
1904 | PerlIOBuf_read, |
1905 | PerlIOBuf_unread, |
1906 | PerlIOBuf_write, |
1907 | PerlIOBuf_seek, |
1908 | PerlIOBuf_tell, |
1909 | PerlIOBuf_close, |
1910 | PerlIOBuf_flush, |
06da4f11 |
1911 | PerlIOBuf_fill, |
9e353e3b |
1912 | PerlIOBase_eof, |
1913 | PerlIOBase_error, |
1914 | PerlIOBase_clearerr, |
1915 | PerlIOBuf_setlinebuf, |
1916 | PerlIOBuf_get_base, |
1917 | PerlIOBuf_bufsiz, |
1918 | PerlIOBuf_get_ptr, |
1919 | PerlIOBuf_get_cnt, |
1920 | PerlIOBuf_set_ptrcnt, |
1921 | }; |
1922 | |
66ecd56b |
1923 | /*--------------------------------------------------------------------------------------*/ |
1924 | /* crlf - translation currently just a copy of perlio to prove |
1925 | that extra buffering which real one will do is not an issue. |
1926 | */ |
1927 | |
1928 | PerlIO_funcs PerlIO_crlf = { |
1929 | "crlf", |
1930 | sizeof(PerlIOBuf), |
1931 | 0, |
1932 | PerlIOBase_fileno, |
1933 | PerlIOBuf_fdopen, |
1934 | PerlIOBuf_open, |
1935 | PerlIOBuf_reopen, |
1936 | PerlIOBase_pushed, |
1937 | PerlIOBase_noop_ok, |
1938 | PerlIOBuf_read, |
1939 | PerlIOBuf_unread, |
1940 | PerlIOBuf_write, |
1941 | PerlIOBuf_seek, |
1942 | PerlIOBuf_tell, |
1943 | PerlIOBuf_close, |
1944 | PerlIOBuf_flush, |
1945 | PerlIOBuf_fill, |
1946 | PerlIOBase_eof, |
1947 | PerlIOBase_error, |
1948 | PerlIOBase_clearerr, |
1949 | PerlIOBuf_setlinebuf, |
1950 | PerlIOBuf_get_base, |
1951 | PerlIOBuf_bufsiz, |
1952 | PerlIOBuf_get_ptr, |
1953 | PerlIOBuf_get_cnt, |
1954 | PerlIOBuf_set_ptrcnt, |
1955 | }; |
1956 | |
06da4f11 |
1957 | #ifdef HAS_MMAP |
1958 | /*--------------------------------------------------------------------------------------*/ |
1959 | /* mmap as "buffer" layer */ |
1960 | |
1961 | typedef struct |
1962 | { |
1963 | PerlIOBuf base; /* PerlIOBuf stuff */ |
c3d7c7c9 |
1964 | Mmap_t mptr; /* Mapped address */ |
06da4f11 |
1965 | Size_t len; /* mapped length */ |
1966 | STDCHAR *bbuf; /* malloced buffer if map fails */ |
c3d7c7c9 |
1967 | |
06da4f11 |
1968 | } PerlIOMmap; |
1969 | |
c3d7c7c9 |
1970 | static size_t page_size = 0; |
1971 | |
06da4f11 |
1972 | IV |
1973 | PerlIOMmap_map(PerlIO *f) |
1974 | { |
68d873c6 |
1975 | dTHX; |
06da4f11 |
1976 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1977 | PerlIOBuf *b = &m->base; |
1978 | IV flags = PerlIOBase(f)->flags; |
1979 | IV code = 0; |
1980 | if (m->len) |
1981 | abort(); |
1982 | if (flags & PERLIO_F_CANREAD) |
1983 | { |
1984 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1985 | int fd = PerlIO_fileno(f); |
1986 | struct stat st; |
1987 | code = fstat(fd,&st); |
1988 | if (code == 0 && S_ISREG(st.st_mode)) |
1989 | { |
1990 | SSize_t len = st.st_size - b->posn; |
1991 | if (len > 0) |
1992 | { |
c3d7c7c9 |
1993 | Off_t posn; |
68d873c6 |
1994 | if (!page_size) { |
1995 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE)) |
1996 | { |
1997 | SETERRNO(0,SS$_NORMAL); |
1998 | # ifdef _SC_PAGESIZE |
1999 | page_size = sysconf(_SC_PAGESIZE); |
2000 | # else |
2001 | page_size = sysconf(_SC_PAGE_SIZE); |
14aaf8e8 |
2002 | # endif |
68d873c6 |
2003 | if ((long)page_size < 0) { |
2004 | if (errno) { |
2005 | SV *error = ERRSV; |
2006 | char *msg; |
2007 | STRLEN n_a; |
2008 | (void)SvUPGRADE(error, SVt_PV); |
2009 | msg = SvPVx(error, n_a); |
14aaf8e8 |
2010 | Perl_croak(aTHX_ "panic: sysconf: %s", msg); |
68d873c6 |
2011 | } |
2012 | else |
14aaf8e8 |
2013 | Perl_croak(aTHX_ "panic: sysconf: pagesize unknown"); |
68d873c6 |
2014 | } |
2015 | } |
2016 | #else |
2017 | # ifdef HAS_GETPAGESIZE |
c3d7c7c9 |
2018 | page_size = getpagesize(); |
68d873c6 |
2019 | # else |
2020 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
2021 | page_size = PAGESIZE; /* compiletime, bad */ |
2022 | # endif |
2023 | # endif |
2024 | #endif |
2025 | if ((IV)page_size <= 0) |
14aaf8e8 |
2026 | Perl_croak(aTHX_ "panic: bad pagesize %"IVdf, (IV)page_size); |
68d873c6 |
2027 | } |
c3d7c7c9 |
2028 | if (b->posn < 0) |
2029 | { |
2030 | /* This is a hack - should never happen - open should have set it ! */ |
2031 | b->posn = PerlIO_tell(PerlIONext(f)); |
2032 | } |
2033 | posn = (b->posn / page_size) * page_size; |
2034 | len = st.st_size - posn; |
2035 | m->mptr = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, posn); |
2036 | if (m->mptr && m->mptr != (Mmap_t) -1) |
06da4f11 |
2037 | { |
2038 | #if defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
c3d7c7c9 |
2039 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 |
2040 | #endif |
c3d7c7c9 |
2041 | PerlIOBase(f)->flags = (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; |
2042 | b->end = ((STDCHAR *)m->mptr) + len; |
2043 | b->buf = ((STDCHAR *)m->mptr) + (b->posn - posn); |
2044 | b->ptr = b->buf; |
2045 | m->len = len; |
06da4f11 |
2046 | } |
2047 | else |
2048 | { |
2049 | b->buf = NULL; |
2050 | } |
2051 | } |
2052 | else |
2053 | { |
2054 | PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF; |
2055 | b->buf = NULL; |
2056 | b->ptr = b->end = b->ptr; |
2057 | code = -1; |
2058 | } |
2059 | } |
2060 | } |
2061 | return code; |
2062 | } |
2063 | |
2064 | IV |
2065 | PerlIOMmap_unmap(PerlIO *f) |
2066 | { |
2067 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2068 | PerlIOBuf *b = &m->base; |
2069 | IV code = 0; |
2070 | if (m->len) |
2071 | { |
2072 | if (b->buf) |
2073 | { |
c3d7c7c9 |
2074 | code = munmap(m->mptr, m->len); |
2075 | b->buf = NULL; |
2076 | m->len = 0; |
2077 | m->mptr = NULL; |
06da4f11 |
2078 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0) |
2079 | code = -1; |
06da4f11 |
2080 | } |
2081 | b->ptr = b->end = b->buf; |
2082 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
2083 | } |
2084 | return code; |
2085 | } |
2086 | |
2087 | STDCHAR * |
2088 | PerlIOMmap_get_base(PerlIO *f) |
2089 | { |
2090 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2091 | PerlIOBuf *b = &m->base; |
2092 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
2093 | { |
2094 | /* Already have a readbuffer in progress */ |
2095 | return b->buf; |
2096 | } |
2097 | if (b->buf) |
2098 | { |
2099 | /* We have a write buffer or flushed PerlIOBuf read buffer */ |
2100 | m->bbuf = b->buf; /* save it in case we need it again */ |
2101 | b->buf = NULL; /* Clear to trigger below */ |
2102 | } |
2103 | if (!b->buf) |
2104 | { |
2105 | PerlIOMmap_map(f); /* Try and map it */ |
2106 | if (!b->buf) |
2107 | { |
2108 | /* Map did not work - recover PerlIOBuf buffer if we have one */ |
2109 | b->buf = m->bbuf; |
2110 | } |
2111 | } |
2112 | b->ptr = b->end = b->buf; |
2113 | if (b->buf) |
2114 | return b->buf; |
2115 | return PerlIOBuf_get_base(f); |
2116 | } |
2117 | |
2118 | SSize_t |
2119 | PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count) |
2120 | { |
2121 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2122 | PerlIOBuf *b = &m->base; |
2123 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
2124 | PerlIO_flush(f); |
2125 | if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count)) |
2126 | { |
2127 | b->ptr -= count; |
2128 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
2129 | return count; |
2130 | } |
2131 | if (m->len) |
2132 | { |
4a4a6116 |
2133 | /* Loose the unwritable mapped buffer */ |
06da4f11 |
2134 | PerlIO_flush(f); |
c3d7c7c9 |
2135 | /* If flush took the "buffer" see if we have one from before */ |
2136 | if (!b->buf && m->bbuf) |
2137 | b->buf = m->bbuf; |
2138 | if (!b->buf) |
2139 | { |
2140 | PerlIOBuf_get_base(f); |
2141 | m->bbuf = b->buf; |
2142 | } |
06da4f11 |
2143 | } |
2144 | return PerlIOBuf_unread(f,vbuf,count); |
2145 | } |
2146 | |
2147 | SSize_t |
2148 | PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count) |
2149 | { |
2150 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2151 | PerlIOBuf *b = &m->base; |
2152 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) |
2153 | { |
2154 | /* No, or wrong sort of, buffer */ |
2155 | if (m->len) |
2156 | { |
2157 | if (PerlIOMmap_unmap(f) != 0) |
2158 | return 0; |
2159 | } |
2160 | /* If unmap took the "buffer" see if we have one from before */ |
2161 | if (!b->buf && m->bbuf) |
2162 | b->buf = m->bbuf; |
2163 | if (!b->buf) |
2164 | { |
2165 | PerlIOBuf_get_base(f); |
2166 | m->bbuf = b->buf; |
2167 | } |
2168 | } |
2169 | return PerlIOBuf_write(f,vbuf,count); |
2170 | } |
2171 | |
2172 | IV |
2173 | PerlIOMmap_flush(PerlIO *f) |
2174 | { |
2175 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2176 | PerlIOBuf *b = &m->base; |
2177 | IV code = PerlIOBuf_flush(f); |
2178 | /* Now we are "synced" at PerlIOBuf level */ |
2179 | if (b->buf) |
2180 | { |
2181 | if (m->len) |
2182 | { |
2183 | /* Unmap the buffer */ |
2184 | if (PerlIOMmap_unmap(f) != 0) |
2185 | code = -1; |
2186 | } |
2187 | else |
2188 | { |
2189 | /* We seem to have a PerlIOBuf buffer which was not mapped |
2190 | * remember it in case we need one later |
2191 | */ |
2192 | m->bbuf = b->buf; |
2193 | } |
2194 | } |
06da4f11 |
2195 | return code; |
2196 | } |
2197 | |
2198 | IV |
2199 | PerlIOMmap_fill(PerlIO *f) |
2200 | { |
2201 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2202 | IV code = PerlIO_flush(f); |
06da4f11 |
2203 | if (code == 0 && !b->buf) |
2204 | { |
2205 | code = PerlIOMmap_map(f); |
06da4f11 |
2206 | } |
2207 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
2208 | { |
2209 | code = PerlIOBuf_fill(f); |
06da4f11 |
2210 | } |
2211 | return code; |
2212 | } |
2213 | |
2214 | IV |
2215 | PerlIOMmap_close(PerlIO *f) |
2216 | { |
2217 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2218 | PerlIOBuf *b = &m->base; |
2219 | IV code = PerlIO_flush(f); |
2220 | if (m->bbuf) |
2221 | { |
2222 | b->buf = m->bbuf; |
2223 | m->bbuf = NULL; |
2224 | b->ptr = b->end = b->buf; |
2225 | } |
2226 | if (PerlIOBuf_close(f) != 0) |
2227 | code = -1; |
06da4f11 |
2228 | return code; |
2229 | } |
2230 | |
2231 | |
2232 | PerlIO_funcs PerlIO_mmap = { |
2233 | "mmap", |
2234 | sizeof(PerlIOMmap), |
2235 | 0, |
2236 | PerlIOBase_fileno, |
2237 | PerlIOBuf_fdopen, |
2238 | PerlIOBuf_open, |
c3d7c7c9 |
2239 | PerlIOBuf_reopen, |
06da4f11 |
2240 | PerlIOBase_pushed, |
2241 | PerlIOBase_noop_ok, |
2242 | PerlIOBuf_read, |
2243 | PerlIOMmap_unread, |
2244 | PerlIOMmap_write, |
2245 | PerlIOBuf_seek, |
2246 | PerlIOBuf_tell, |
2247 | PerlIOBuf_close, |
2248 | PerlIOMmap_flush, |
2249 | PerlIOMmap_fill, |
2250 | PerlIOBase_eof, |
2251 | PerlIOBase_error, |
2252 | PerlIOBase_clearerr, |
2253 | PerlIOBuf_setlinebuf, |
2254 | PerlIOMmap_get_base, |
2255 | PerlIOBuf_bufsiz, |
2256 | PerlIOBuf_get_ptr, |
2257 | PerlIOBuf_get_cnt, |
2258 | PerlIOBuf_set_ptrcnt, |
2259 | }; |
2260 | |
2261 | #endif /* HAS_MMAP */ |
2262 | |
9e353e3b |
2263 | void |
2264 | PerlIO_init(void) |
760ac839 |
2265 | { |
9e353e3b |
2266 | if (!_perlio) |
6f9d8c32 |
2267 | { |
9e353e3b |
2268 | atexit(&PerlIO_cleanup); |
6f9d8c32 |
2269 | } |
760ac839 |
2270 | } |
2271 | |
9e353e3b |
2272 | #undef PerlIO_stdin |
2273 | PerlIO * |
2274 | PerlIO_stdin(void) |
2275 | { |
2276 | if (!_perlio) |
f3862f8b |
2277 | PerlIO_stdstreams(); |
05d1247b |
2278 | return &_perlio[1]; |
9e353e3b |
2279 | } |
2280 | |
2281 | #undef PerlIO_stdout |
2282 | PerlIO * |
2283 | PerlIO_stdout(void) |
2284 | { |
2285 | if (!_perlio) |
f3862f8b |
2286 | PerlIO_stdstreams(); |
05d1247b |
2287 | return &_perlio[2]; |
9e353e3b |
2288 | } |
2289 | |
2290 | #undef PerlIO_stderr |
2291 | PerlIO * |
2292 | PerlIO_stderr(void) |
2293 | { |
2294 | if (!_perlio) |
f3862f8b |
2295 | PerlIO_stdstreams(); |
05d1247b |
2296 | return &_perlio[3]; |
9e353e3b |
2297 | } |
2298 | |
2299 | /*--------------------------------------------------------------------------------------*/ |
2300 | |
2301 | #undef PerlIO_getname |
2302 | char * |
2303 | PerlIO_getname(PerlIO *f, char *buf) |
2304 | { |
2305 | dTHX; |
2306 | Perl_croak(aTHX_ "Don't know how to get file name"); |
2307 | return NULL; |
2308 | } |
2309 | |
2310 | |
2311 | /*--------------------------------------------------------------------------------------*/ |
2312 | /* Functions which can be called on any kind of PerlIO implemented |
2313 | in terms of above |
2314 | */ |
2315 | |
2316 | #undef PerlIO_getc |
6f9d8c32 |
2317 | int |
9e353e3b |
2318 | PerlIO_getc(PerlIO *f) |
760ac839 |
2319 | { |
313ca112 |
2320 | STDCHAR buf[1]; |
2321 | SSize_t count = PerlIO_read(f,buf,1); |
9e353e3b |
2322 | if (count == 1) |
313ca112 |
2323 | { |
2324 | return (unsigned char) buf[0]; |
2325 | } |
2326 | return EOF; |
2327 | } |
2328 | |
2329 | #undef PerlIO_ungetc |
2330 | int |
2331 | PerlIO_ungetc(PerlIO *f, int ch) |
2332 | { |
2333 | if (ch != EOF) |
2334 | { |
2335 | STDCHAR buf = ch; |
2336 | if (PerlIO_unread(f,&buf,1) == 1) |
2337 | return ch; |
2338 | } |
2339 | return EOF; |
760ac839 |
2340 | } |
2341 | |
9e353e3b |
2342 | #undef PerlIO_putc |
2343 | int |
2344 | PerlIO_putc(PerlIO *f, int ch) |
760ac839 |
2345 | { |
9e353e3b |
2346 | STDCHAR buf = ch; |
2347 | return PerlIO_write(f,&buf,1); |
760ac839 |
2348 | } |
2349 | |
9e353e3b |
2350 | #undef PerlIO_puts |
760ac839 |
2351 | int |
9e353e3b |
2352 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 |
2353 | { |
9e353e3b |
2354 | STRLEN len = strlen(s); |
2355 | return PerlIO_write(f,s,len); |
760ac839 |
2356 | } |
2357 | |
2358 | #undef PerlIO_rewind |
2359 | void |
c78749f2 |
2360 | PerlIO_rewind(PerlIO *f) |
760ac839 |
2361 | { |
6f9d8c32 |
2362 | PerlIO_seek(f,(Off_t)0,SEEK_SET); |
9e353e3b |
2363 | PerlIO_clearerr(f); |
6f9d8c32 |
2364 | } |
2365 | |
2366 | #undef PerlIO_vprintf |
2367 | int |
2368 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) |
2369 | { |
2370 | dTHX; |
bb9950b7 |
2371 | SV *sv = newSVpvn("",0); |
6f9d8c32 |
2372 | char *s; |
2373 | STRLEN len; |
2cc61e15 |
2374 | #ifdef NEED_VA_COPY |
2375 | va_list apc; |
2376 | Perl_va_copy(ap, apc); |
2377 | sv_vcatpvf(sv, fmt, &apc); |
2378 | #else |
6f9d8c32 |
2379 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 |
2380 | #endif |
6f9d8c32 |
2381 | s = SvPV(sv,len); |
bb9950b7 |
2382 | return PerlIO_write(f,s,len); |
760ac839 |
2383 | } |
2384 | |
2385 | #undef PerlIO_printf |
6f9d8c32 |
2386 | int |
760ac839 |
2387 | PerlIO_printf(PerlIO *f,const char *fmt,...) |
760ac839 |
2388 | { |
2389 | va_list ap; |
2390 | int result; |
760ac839 |
2391 | va_start(ap,fmt); |
6f9d8c32 |
2392 | result = PerlIO_vprintf(f,fmt,ap); |
760ac839 |
2393 | va_end(ap); |
2394 | return result; |
2395 | } |
2396 | |
2397 | #undef PerlIO_stdoutf |
6f9d8c32 |
2398 | int |
760ac839 |
2399 | PerlIO_stdoutf(const char *fmt,...) |
760ac839 |
2400 | { |
2401 | va_list ap; |
2402 | int result; |
760ac839 |
2403 | va_start(ap,fmt); |
760ac839 |
2404 | result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); |
2405 | va_end(ap); |
2406 | return result; |
2407 | } |
2408 | |
2409 | #undef PerlIO_tmpfile |
2410 | PerlIO * |
c78749f2 |
2411 | PerlIO_tmpfile(void) |
760ac839 |
2412 | { |
b1ef6e3b |
2413 | /* I have no idea how portable mkstemp() is ... */ |
83b075c3 |
2414 | #if defined(WIN32) || !defined(HAVE_MKSTEMP) |
2415 | PerlIO *f = NULL; |
2416 | FILE *stdio = tmpfile(); |
2417 | if (stdio) |
2418 | { |
2419 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,"w+"),PerlIOStdio); |
2420 | s->stdio = stdio; |
2421 | } |
2422 | return f; |
2423 | #else |
2424 | dTHX; |
6f9d8c32 |
2425 | SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0); |
2426 | int fd = mkstemp(SvPVX(sv)); |
2427 | PerlIO *f = NULL; |
2428 | if (fd >= 0) |
2429 | { |
b1ef6e3b |
2430 | f = PerlIO_fdopen(fd,"w+"); |
6f9d8c32 |
2431 | if (f) |
2432 | { |
9e353e3b |
2433 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; |
6f9d8c32 |
2434 | } |
00b02797 |
2435 | PerlLIO_unlink(SvPVX(sv)); |
6f9d8c32 |
2436 | SvREFCNT_dec(sv); |
2437 | } |
2438 | return f; |
83b075c3 |
2439 | #endif |
760ac839 |
2440 | } |
2441 | |
6f9d8c32 |
2442 | #undef HAS_FSETPOS |
2443 | #undef HAS_FGETPOS |
2444 | |
760ac839 |
2445 | #endif /* USE_SFIO */ |
2446 | #endif /* PERLIO_IS_STDIO */ |
2447 | |
9e353e3b |
2448 | /*======================================================================================*/ |
2449 | /* Now some functions in terms of above which may be needed even if |
2450 | we are not in true PerlIO mode |
2451 | */ |
2452 | |
760ac839 |
2453 | #ifndef HAS_FSETPOS |
2454 | #undef PerlIO_setpos |
2455 | int |
c78749f2 |
2456 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
760ac839 |
2457 | { |
6f9d8c32 |
2458 | return PerlIO_seek(f,*pos,0); |
760ac839 |
2459 | } |
c411622e |
2460 | #else |
2461 | #ifndef PERLIO_IS_STDIO |
2462 | #undef PerlIO_setpos |
2463 | int |
c78749f2 |
2464 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
c411622e |
2465 | { |
2d4389e4 |
2466 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
2467 | return fsetpos64(f, pos); |
2468 | #else |
c411622e |
2469 | return fsetpos(f, pos); |
d9b3e12d |
2470 | #endif |
c411622e |
2471 | } |
2472 | #endif |
760ac839 |
2473 | #endif |
2474 | |
2475 | #ifndef HAS_FGETPOS |
2476 | #undef PerlIO_getpos |
2477 | int |
c78749f2 |
2478 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
760ac839 |
2479 | { |
2480 | *pos = PerlIO_tell(f); |
a17c7222 |
2481 | return *pos == -1 ? -1 : 0; |
760ac839 |
2482 | } |
c411622e |
2483 | #else |
2484 | #ifndef PERLIO_IS_STDIO |
2485 | #undef PerlIO_getpos |
2486 | int |
c78749f2 |
2487 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
c411622e |
2488 | { |
2d4389e4 |
2489 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
2490 | return fgetpos64(f, pos); |
2491 | #else |
c411622e |
2492 | return fgetpos(f, pos); |
d9b3e12d |
2493 | #endif |
c411622e |
2494 | } |
2495 | #endif |
760ac839 |
2496 | #endif |
2497 | |
2498 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) |
2499 | |
2500 | int |
c78749f2 |
2501 | vprintf(char *pat, char *args) |
662a7e3f |
2502 | { |
2503 | _doprnt(pat, args, stdout); |
2504 | return 0; /* wrong, but perl doesn't use the return value */ |
2505 | } |
2506 | |
2507 | int |
c78749f2 |
2508 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 |
2509 | { |
2510 | _doprnt(pat, args, fd); |
2511 | return 0; /* wrong, but perl doesn't use the return value */ |
2512 | } |
2513 | |
2514 | #endif |
2515 | |
2516 | #ifndef PerlIO_vsprintf |
6f9d8c32 |
2517 | int |
8ac85365 |
2518 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 |
2519 | { |
2520 | int val = vsprintf(s, fmt, ap); |
2521 | if (n >= 0) |
2522 | { |
8c86a920 |
2523 | if (strlen(s) >= (STRLEN)n) |
760ac839 |
2524 | { |
bf49b057 |
2525 | dTHX; |
fb4a9925 |
2526 | (void)PerlIO_puts(Perl_error_log, |
2527 | "panic: sprintf overflow - memory corrupted!\n"); |
bf49b057 |
2528 | my_exit(1); |
760ac839 |
2529 | } |
2530 | } |
2531 | return val; |
2532 | } |
2533 | #endif |
2534 | |
2535 | #ifndef PerlIO_sprintf |
6f9d8c32 |
2536 | int |
760ac839 |
2537 | PerlIO_sprintf(char *s, int n, const char *fmt,...) |
760ac839 |
2538 | { |
2539 | va_list ap; |
2540 | int result; |
760ac839 |
2541 | va_start(ap,fmt); |
760ac839 |
2542 | result = PerlIO_vsprintf(s, n, fmt, ap); |
2543 | va_end(ap); |
2544 | return result; |
2545 | } |
2546 | #endif |
2547 | |
c5be433b |
2548 | #endif /* !PERL_IMPLICIT_SYS */ |
2549 | |