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[perl5.git] / perlio.c
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14a5cf38 1/*
71200d45 2 * perlio.c Copyright (c) 1996-2001, Nick Ing-Simmons You may distribute
14a5cf38 3 * under the terms of either the GNU General Public License or the
71200d45 4 * Artistic License, as specified in the README file.
760ac839
LW
5 */
6
14a5cf38 7/*
71200d45 8 * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get
14a5cf38 9 * at the dispatch tables, even when we do not need it for other reasons.
71200d45 10 * Invent a dSYS macro to abstract this out
14a5cf38 11 */
7bcba3d4
NIS
12#ifdef PERL_IMPLICIT_SYS
13#define dSYS dTHX
14#else
15#define dSYS dNOOP
16#endif
17
760ac839 18#define VOIDUSED 1
12ae5dfc
JH
19#ifdef PERL_MICRO
20# include "uconfig.h"
21#else
22# include "config.h"
23#endif
760ac839 24
6f9d8c32 25#define PERLIO_NOT_STDIO 0
760ac839 26#if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO)
14a5cf38 27/*
71200d45 28 * #define PerlIO FILE
14a5cf38 29 */
760ac839
LW
30#endif
31/*
6f9d8c32 32 * This file provides those parts of PerlIO abstraction
88b61e10 33 * which are not #defined in perlio.h.
6f9d8c32 34 * Which these are depends on various Configure #ifdef's
760ac839
LW
35 */
36
37#include "EXTERN.h"
864dbfa3 38#define PERL_IN_PERLIO_C
760ac839
LW
39#include "perl.h"
40
0c4f7ff0
NIS
41#include "XSUB.h"
42
5f1a76d0
NIS
43#undef PerlMemShared_calloc
44#define PerlMemShared_calloc(x,y) calloc(x,y)
45#undef PerlMemShared_free
46#define PerlMemShared_free(x) free(x)
47
60382766 48int
f5b9d040 49perlsio_binmode(FILE *fp, int iotype, int mode)
60382766 50{
14a5cf38 51 /*
71200d45 52 * This used to be contents of do_binmode in doio.c
14a5cf38 53 */
60382766
NIS
54#ifdef DOSISH
55# if defined(atarist) || defined(__MINT__)
f5b9d040 56 if (!fflush(fp)) {
60382766 57 if (mode & O_BINARY)
14a5cf38 58 ((FILE *) fp)->_flag |= _IOBIN;
60382766 59 else
14a5cf38 60 ((FILE *) fp)->_flag &= ~_IOBIN;
60382766
NIS
61 return 1;
62 }
63 return 0;
64# else
eb73beca 65 dTHX;
14a5cf38
JH
66#ifdef NETWARE
67 if (PerlLIO_setmode(fp, mode) != -1) {
68#else
f5b9d040 69 if (PerlLIO_setmode(fileno(fp), mode) != -1) {
14a5cf38 70#endif
60382766 71# if defined(WIN32) && defined(__BORLANDC__)
14a5cf38 72 /*
71200d45 73 * The translation mode of the stream is maintained independent of
14a5cf38 74 * the translation mode of the fd in the Borland RTL (heavy
71200d45 75 * digging through their runtime sources reveal). User has to set
14a5cf38 76 * the mode explicitly for the stream (though they don't document
71200d45 77 * this anywhere). GSAR 97-5-24
60382766 78 */
14a5cf38 79 fseek(fp, 0L, 0);
60382766 80 if (mode & O_BINARY)
f5b9d040 81 fp->flags |= _F_BIN;
60382766 82 else
14a5cf38 83 fp->flags &= ~_F_BIN;
60382766
NIS
84# endif
85 return 1;
86 }
87 else
88 return 0;
89# endif
90#else
91# if defined(USEMYBINMODE)
92 if (my_binmode(fp, iotype, mode) != FALSE)
93 return 1;
94 else
95 return 0;
96# else
97 return 1;
98# endif
99#endif
100}
101
eb73beca
NIS
102#ifndef PERLIO_LAYERS
103int
104PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names)
105{
14a5cf38
JH
106 if (!names || !*names || strEQ(names, ":crlf") || strEQ(names, ":raw")) {
107 return 0;
108 }
109 Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names);
110 /*
71200d45 111 * NOTREACHED
14a5cf38
JH
112 */
113 return -1;
eb73beca
NIS
114}
115
13621cfb
NIS
116void
117PerlIO_destruct(pTHX)
118{
119}
120
f5b9d040
NIS
121int
122PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names)
123{
92bff44d 124#ifdef USE_SFIO
14a5cf38 125 return 1;
92bff44d 126#else
14a5cf38 127 return perlsio_binmode(fp, iotype, mode);
92bff44d 128#endif
f5b9d040 129}
60382766 130
14a5cf38 131/*
71200d45 132 * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries
14a5cf38 133 */
ee518936
NIS
134
135PerlIO *
14a5cf38
JH
136PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd,
137 int imode, int perm, PerlIO *old, int narg, SV **args)
138{
139 if (narg == 1) {
140 if (*args == &PL_sv_undef)
141 return PerlIO_tmpfile();
142 else {
143 char *name = SvPV_nolen(*args);
144 if (*mode == '#') {
145 fd = PerlLIO_open3(name, imode, perm);
146 if (fd >= 0)
147 return PerlIO_fdopen(fd, (char *) mode + 1);
148 }
149 else if (old) {
150 return PerlIO_reopen(name, mode, old);
151 }
152 else {
153 return PerlIO_open(name, mode);
154 }
155 }
156 }
157 else {
158 return PerlIO_fdopen(fd, (char *) mode);
159 }
160 return NULL;
ee518936
NIS
161}
162
0c4f7ff0
NIS
163XS(XS_PerlIO__Layer__find)
164{
14a5cf38
JH
165 dXSARGS;
166 if (items < 2)
167 Perl_croak(aTHX_ "Usage class->find(name[,load])");
168 else {
169 char *name = SvPV_nolen(ST(1));
170 ST(0) = (strEQ(name, "crlf")
171 || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef;
172 XSRETURN(1);
173 }
0c4f7ff0
NIS
174}
175
176
177void
178Perl_boot_core_PerlIO(pTHX)
179{
14a5cf38 180 newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__);
0c4f7ff0
NIS
181}
182
ac27b0f5
NIS
183#endif
184
32e30700 185
6f9d8c32 186#ifdef PERLIO_IS_STDIO
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187
188void
8ac85365 189PerlIO_init(void)
760ac839 190{
14a5cf38
JH
191 /*
192 * Does nothing (yet) except force this file to be included in perl
71200d45 193 * binary. That allows this file to force inclusion of other functions
14a5cf38 194 * that may be required by loadable extensions e.g. for
71200d45 195 * FileHandle::tmpfile
14a5cf38 196 */
760ac839
LW
197}
198
33dcbb9a
PP
199#undef PerlIO_tmpfile
200PerlIO *
8ac85365 201PerlIO_tmpfile(void)
33dcbb9a 202{
14a5cf38 203 return tmpfile();
33dcbb9a
PP
204}
205
14a5cf38 206#else /* PERLIO_IS_STDIO */
760ac839
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207
208#ifdef USE_SFIO
209
210#undef HAS_FSETPOS
211#undef HAS_FGETPOS
212
14a5cf38
JH
213/*
214 * This section is just to make sure these functions get pulled in from
71200d45 215 * libsfio.a
14a5cf38 216 */
760ac839
LW
217
218#undef PerlIO_tmpfile
219PerlIO *
c78749f2 220PerlIO_tmpfile(void)
760ac839 221{
14a5cf38 222 return sftmp(0);
760ac839
LW
223}
224
225void
c78749f2 226PerlIO_init(void)
760ac839 227{
14a5cf38
JH
228 /*
229 * Force this file to be included in perl binary. Which allows this
230 * file to force inclusion of other functions that may be required by
71200d45 231 * loadable extensions e.g. for FileHandle::tmpfile
14a5cf38 232 */
760ac839 233
14a5cf38 234 /*
71200d45 235 * Hack sfio does its own 'autoflush' on stdout in common cases. Flush
14a5cf38 236 * results in a lot of lseek()s to regular files and lot of small
71200d45 237 * writes to pipes.
14a5cf38
JH
238 */
239 sfset(sfstdout, SF_SHARE, 0);
760ac839
LW
240}
241
92bff44d
NIS
242PerlIO *
243PerlIO_importFILE(FILE *stdio, int fl)
244{
14a5cf38
JH
245 int fd = fileno(stdio);
246 PerlIO *r = PerlIO_fdopen(fd, "r+");
247 return r;
92bff44d
NIS
248}
249
250FILE *
251PerlIO_findFILE(PerlIO *pio)
252{
14a5cf38
JH
253 int fd = PerlIO_fileno(pio);
254 FILE *f = fdopen(fd, "r+");
255 PerlIO_flush(pio);
256 if (!f && errno == EINVAL)
257 f = fdopen(fd, "w");
258 if (!f && errno == EINVAL)
259 f = fdopen(fd, "r");
260 return f;
92bff44d
NIS
261}
262
263
14a5cf38 264#else /* USE_SFIO */
6f9d8c32 265/*======================================================================================*/
14a5cf38 266/*
71200d45 267 * Implement all the PerlIO interface ourselves.
9e353e3b 268 */
760ac839 269
76ced9ad
NIS
270#include "perliol.h"
271
14a5cf38
JH
272/*
273 * We _MUST_ have <unistd.h> if we are using lseek() and may have large
71200d45 274 * files
14a5cf38 275 */
02f66e2f
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276#ifdef I_UNISTD
277#include <unistd.h>
278#endif
06da4f11
NIS
279#ifdef HAS_MMAP
280#include <sys/mman.h>
281#endif
282
02f66e2f 283
14a5cf38
JH
284void PerlIO_debug(const char *fmt, ...)
285 __attribute__ ((format(__printf__, 1, 2)));
6f9d8c32 286
6f9d8c32 287void
14a5cf38
JH
288PerlIO_debug(const char *fmt, ...)
289{
290 static int dbg = 0;
291 va_list ap;
292 dSYS;
293 va_start(ap, fmt);
294 if (!dbg) {
295 char *s = PerlEnv_getenv("PERLIO_DEBUG");
296 if (s && *s)
297 dbg = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666);
298 else
299 dbg = -1;
300 }
301 if (dbg > 0) {
302 dTHX;
303 SV *sv = newSVpvn("", 0);
304 char *s;
305 STRLEN len;
306 s = CopFILE(PL_curcop);
307 if (!s)
308 s = "(none)";
309 Perl_sv_catpvf(aTHX_ sv, "%s:%" IVdf " ", s,
310 (IV) CopLINE(PL_curcop));
311 Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap);
312
313 s = SvPV(sv, len);
314 PerlLIO_write(dbg, s, len);
315 SvREFCNT_dec(sv);
316 }
317 va_end(ap);
6f9d8c32
NIS
318}
319
9e353e3b
NIS
320/*--------------------------------------------------------------------------------------*/
321
14a5cf38 322/*
71200d45 323 * Inner level routines
14a5cf38 324 */
9e353e3b 325
14a5cf38 326/*
71200d45 327 * Table of pointers to the PerlIO structs (malloc'ed)
14a5cf38
JH
328 */
329PerlIO *_perlio = NULL;
05d1247b 330#define PERLIO_TABLE_SIZE 64
6f9d8c32 331
e3f3bf95
NIS
332
333
760ac839 334PerlIO *
5f1a76d0 335PerlIO_allocate(pTHX)
6f9d8c32 336{
14a5cf38 337 /*
71200d45 338 * Find a free slot in the table, allocating new table as necessary
14a5cf38
JH
339 */
340 PerlIO **last;
341 PerlIO *f;
342 last = &_perlio;
343 while ((f = *last)) {
344 int i;
345 last = (PerlIO **) (f);
346 for (i = 1; i < PERLIO_TABLE_SIZE; i++) {
347 if (!*++f) {
348 return f;
349 }
350 }
351 }
352 f = PerlMemShared_calloc(PERLIO_TABLE_SIZE, sizeof(PerlIO));
353 if (!f) {
354 return NULL;
355 }
356 *last = f;
357 return f + 1;
05d1247b
NIS
358}
359
360void
5f1a76d0 361PerlIO_cleantable(pTHX_ PerlIO **tablep)
05d1247b 362{
14a5cf38
JH
363 PerlIO *table = *tablep;
364 if (table) {
365 int i;
366 PerlIO_cleantable(aTHX_(PerlIO **) & (table[0]));
367 for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) {
368 PerlIO *f = table + i;
369 if (*f) {
370 PerlIO_close(f);
371 }
372 }
373 PerlMemShared_free(table);
374 *tablep = NULL;
05d1247b 375 }
05d1247b
NIS
376}
377
fcf2db38
NIS
378PerlIO_list_t *PerlIO_known_layers;
379PerlIO_list_t *PerlIO_def_layerlist;
380
381PerlIO_list_t *
382PerlIO_list_alloc(void)
383{
14a5cf38
JH
384 PerlIO_list_t *list;
385 Newz('L', list, 1, PerlIO_list_t);
386 list->refcnt = 1;
387 return list;
fcf2db38
NIS
388}
389
390void
391PerlIO_list_free(PerlIO_list_t *list)
392{
14a5cf38
JH
393 if (list) {
394 if (--list->refcnt == 0) {
395 if (list->array) {
396 dTHX;
397 IV i;
398 for (i = 0; i < list->cur; i++) {
399 if (list->array[i].arg)
400 SvREFCNT_dec(list->array[i].arg);
401 }
402 Safefree(list->array);
403 }
404 Safefree(list);
405 }
406 }
fcf2db38
NIS
407}
408
409void
14a5cf38
JH
410PerlIO_list_push(PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg)
411{
412 dTHX;
413 PerlIO_pair_t *p;
414 if (list->cur >= list->len) {
415 list->len += 8;
416 if (list->array)
417 Renew(list->array, list->len, PerlIO_pair_t);
418 else
419 New('l', list->array, list->len, PerlIO_pair_t);
420 }
421 p = &(list->array[list->cur++]);
422 p->funcs = funcs;
423 if ((p->arg = arg)) {
424 SvREFCNT_inc(arg);
425 }
fcf2db38
NIS
426}
427
4a4a6116 428
05d1247b 429void
acfe0abc 430PerlIO_cleanup_layers(pTHX_ void *data)
9a6404c5 431{
fcf2db38 432#if 0
14a5cf38
JH
433 PerlIO_known_layers = Nullhv;
434 PerlIO_def_layerlist = Nullav;
fcf2db38 435#endif
9a6404c5
DM
436}
437
438void
5f1a76d0 439PerlIO_cleanup()
05d1247b 440{
14a5cf38
JH
441 dTHX;
442 PerlIO_cleantable(aTHX_ & _perlio);
6f9d8c32
NIS
443}
444
9e353e3b 445void
13621cfb
NIS
446PerlIO_destruct(pTHX)
447{
14a5cf38
JH
448 PerlIO **table = &_perlio;
449 PerlIO *f;
450 while ((f = *table)) {
451 int i;
452 table = (PerlIO **) (f++);
453 for (i = 1; i < PERLIO_TABLE_SIZE; i++) {
454 PerlIO *x = f;
455 PerlIOl *l;
456 while ((l = *x)) {
457 if (l->tab->kind & PERLIO_K_DESTRUCT) {
458 PerlIO_debug("Destruct popping %s\n", l->tab->name);
459 PerlIO_flush(x);
460 PerlIO_pop(aTHX_ x);
461 }
462 else {
463 x = PerlIONext(x);
464 }
465 }
466 f++;
467 }
468 }
13621cfb
NIS
469}
470
471void
a999f61b 472PerlIO_pop(pTHX_ PerlIO *f)
760ac839 473{
14a5cf38
JH
474 PerlIOl *l = *f;
475 if (l) {
476 PerlIO_debug("PerlIO_pop f=%p %s\n", f, l->tab->name);
477 if (l->tab->Popped) {
478 /*
479 * If popped returns non-zero do not free its layer structure
480 * it has either done so itself, or it is shared and still in
71200d45 481 * use
14a5cf38
JH
482 */
483 if ((*l->tab->Popped) (f) != 0)
484 return;
485 }
486 *f = l->next;;
487 PerlMemShared_free(l);
a8c08ecd 488 }
6f9d8c32
NIS
489}
490
9e353e3b 491/*--------------------------------------------------------------------------------------*/
14a5cf38 492/*
71200d45 493 * XS Interface for perl code
14a5cf38 494 */
9e353e3b 495
fcf2db38 496PerlIO_funcs *
2edd7e44 497PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load)
f3862f8b 498{
14a5cf38
JH
499 IV i;
500 if ((SSize_t) len <= 0)
501 len = strlen(name);
502 for (i = 0; i < PerlIO_known_layers->cur; i++) {
503 PerlIO_funcs *f = PerlIO_known_layers->array[i].funcs;
504 if (memEQ(f->name, name, len)) {
505 PerlIO_debug("%.*s => %p\n", (int) len, name, f);
506 return f;
507 }
508 }
509 if (load && PL_subname && PerlIO_def_layerlist
510 && PerlIO_def_layerlist->cur >= 2) {
511 SV *pkgsv = newSVpvn("PerlIO", 6);
512 SV *layer = newSVpvn(name, len);
513 ENTER;
514 /*
71200d45 515 * The two SVs are magically freed by load_module
14a5cf38
JH
516 */
517 Perl_load_module(aTHX_ 0, pkgsv, Nullsv, layer, Nullsv);
518 LEAVE;
519 return PerlIO_find_layer(aTHX_ name, len, 0);
520 }
521 PerlIO_debug("Cannot find %.*s\n", (int) len, name);
522 return NULL;
f3862f8b
NIS
523}
524
2a1bc955 525#ifdef USE_ATTRIBUTES_FOR_PERLIO
b13b2135
NIS
526
527static int
528perlio_mg_set(pTHX_ SV *sv, MAGIC *mg)
529{
14a5cf38
JH
530 if (SvROK(sv)) {
531 IO *io = GvIOn((GV *) SvRV(sv));
532 PerlIO *ifp = IoIFP(io);
533 PerlIO *ofp = IoOFP(io);
534 Perl_warn(aTHX_ "set %" SVf " %p %p %p", sv, io, ifp, ofp);
535 }
536 return 0;
b13b2135
NIS
537}
538
539static int
540perlio_mg_get(pTHX_ SV *sv, MAGIC *mg)
541{
14a5cf38
JH
542 if (SvROK(sv)) {
543 IO *io = GvIOn((GV *) SvRV(sv));
544 PerlIO *ifp = IoIFP(io);
545 PerlIO *ofp = IoOFP(io);
546 Perl_warn(aTHX_ "get %" SVf " %p %p %p", sv, io, ifp, ofp);
547 }
548 return 0;
b13b2135
NIS
549}
550
551static int
552perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg)
553{
14a5cf38
JH
554 Perl_warn(aTHX_ "clear %" SVf, sv);
555 return 0;
b13b2135
NIS
556}
557
558static int
559perlio_mg_free(pTHX_ SV *sv, MAGIC *mg)
560{
14a5cf38
JH
561 Perl_warn(aTHX_ "free %" SVf, sv);
562 return 0;
b13b2135
NIS
563}
564
565MGVTBL perlio_vtab = {
14a5cf38
JH
566 perlio_mg_get,
567 perlio_mg_set,
568 NULL, /* len */
569 perlio_mg_clear,
570 perlio_mg_free
b13b2135
NIS
571};
572
573XS(XS_io_MODIFY_SCALAR_ATTRIBUTES)
574{
14a5cf38
JH
575 dXSARGS;
576 SV *sv = SvRV(ST(1));
577 AV *av = newAV();
578 MAGIC *mg;
579 int count = 0;
580 int i;
581 sv_magic(sv, (SV *) av, PERL_MAGIC_ext, NULL, 0);
582 SvRMAGICAL_off(sv);
583 mg = mg_find(sv, PERL_MAGIC_ext);
584 mg->mg_virtual = &perlio_vtab;
585 mg_magical(sv);
586 Perl_warn(aTHX_ "attrib %" SVf, sv);
587 for (i = 2; i < items; i++) {
588 STRLEN len;
589 const char *name = SvPV(ST(i), len);
590 SV *layer = PerlIO_find_layer(aTHX_ name, len, 1);
591 if (layer) {
592 av_push(av, SvREFCNT_inc(layer));
593 }
594 else {
595 ST(count) = ST(i);
596 count++;
597 }
598 }
599 SvREFCNT_dec(av);
600 XSRETURN(count);
601}
602
603#endif /* USE_ATTIBUTES_FOR_PERLIO */
2a1bc955 604
e3f3bf95
NIS
605SV *
606PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab)
f3862f8b 607{
14a5cf38
JH
608 HV *stash = gv_stashpv("PerlIO::Layer", TRUE);
609 SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash);
610 return sv;
e3f3bf95
NIS
611}
612
0c4f7ff0
NIS
613XS(XS_PerlIO__Layer__find)
614{
14a5cf38
JH
615 dXSARGS;
616 if (items < 2)
617 Perl_croak(aTHX_ "Usage class->find(name[,load])");
618 else {
619 STRLEN len = 0;
620 char *name = SvPV(ST(1), len);
621 bool load = (items > 2) ? SvTRUE(ST(2)) : 0;
622 PerlIO_funcs *layer = PerlIO_find_layer(aTHX_ name, len, load);
623 ST(0) =
624 (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) :
625 &PL_sv_undef;
626 XSRETURN(1);
627 }
0c4f7ff0
NIS
628}
629
e3f3bf95
NIS
630void
631PerlIO_define_layer(pTHX_ PerlIO_funcs *tab)
632{
14a5cf38
JH
633 if (!PerlIO_known_layers)
634 PerlIO_known_layers = PerlIO_list_alloc();
635 PerlIO_list_push(PerlIO_known_layers, tab, Nullsv);
636 PerlIO_debug("define %s %p\n", tab->name, tab);
f3862f8b
NIS
637}
638
1141d9f8 639int
fcf2db38 640PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names)
1141d9f8 641{
14a5cf38
JH
642 if (names) {
643 const char *s = names;
644 while (*s) {
645 while (isSPACE(*s) || *s == ':')
646 s++;
647 if (*s) {
648 STRLEN llen = 0;
649 const char *e = s;
650 const char *as = Nullch;
651 STRLEN alen = 0;
652 if (!isIDFIRST(*s)) {
653 /*
654 * Message is consistent with how attribute lists are
655 * passed. Even though this means "foo : : bar" is
71200d45 656 * seen as an invalid separator character.
14a5cf38
JH
657 */
658 char q = ((*s == '\'') ? '"' : '\'');
659 Perl_warn(aTHX_
660 "perlio: invalid separator character %c%c%c in layer specification list",
661 q, *s, q);
662 return -1;
663 }
664 do {
665 e++;
666 } while (isALNUM(*e));
667 llen = e - s;
668 if (*e == '(') {
669 int nesting = 1;
670 as = ++e;
671 while (nesting) {
672 switch (*e++) {
673 case ')':
674 if (--nesting == 0)
675 alen = (e - 1) - as;
676 break;
677 case '(':
678 ++nesting;
679 break;
680 case '\\':
681 /*
682 * It's a nul terminated string, not allowed
683 * to \ the terminating null. Anything other
71200d45 684 * character is passed over.
14a5cf38
JH
685 */
686 if (*e++) {
687 break;
688 }
689 /*
71200d45 690 * Drop through
14a5cf38
JH
691 */
692 case '\0':
693 e--;
694 Perl_warn(aTHX_
695 "perlio: argument list not closed for layer \"%.*s\"",
696 (int) (e - s), s);
697 return -1;
698 default:
699 /*
71200d45 700 * boring.
14a5cf38
JH
701 */
702 break;
703 }
704 }
705 }
706 if (e > s) {
707 PerlIO_funcs *layer =
708 PerlIO_find_layer(aTHX_ s, llen, 1);
709 if (layer) {
710 PerlIO_list_push(av, layer,
711 (as) ? newSVpvn(as,
712 alen) :
713 &PL_sv_undef);
714 }
715 else {
716 Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",
717 (int) llen, s);
718 return -1;
719 }
720 }
721 s = e;
722 }
723 }
724 }
725 return 0;
1141d9f8
NIS
726}
727
dfebf958 728void
fcf2db38 729PerlIO_default_buffer(pTHX_ PerlIO_list_t *av)
dfebf958 730{
14a5cf38
JH
731 PerlIO_funcs *tab = &PerlIO_perlio;
732 if (O_BINARY != O_TEXT) {
733 tab = &PerlIO_crlf;
734 }
735 else {
736 if (PerlIO_stdio.Set_ptrcnt) {
737 tab = &PerlIO_stdio;
738 }
dfebf958 739 }
14a5cf38
JH
740 PerlIO_debug("Pushing %s\n", tab->name);
741 PerlIO_list_push(av, PerlIO_find_layer(aTHX_ tab->name, 0, 0),
742 &PL_sv_undef);
dfebf958
NIS
743}
744
e3f3bf95 745SV *
14a5cf38 746PerlIO_arg_fetch(PerlIO_list_t *av, IV n)
e3f3bf95 747{
14a5cf38 748 return av->array[n].arg;
e3f3bf95
NIS
749}
750
f3862f8b 751PerlIO_funcs *
14a5cf38 752PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def)
f3862f8b 753{
14a5cf38
JH
754 if (n >= 0 && n < av->cur) {
755 PerlIO_debug("Layer %" IVdf " is %s\n", n,
756 av->array[n].funcs->name);
757 return av->array[n].funcs;
758 }
759 if (!def)
760 Perl_croak(aTHX_ "panic: PerlIO layer array corrupt");
761 return def;
e3f3bf95
NIS
762}
763
fcf2db38 764PerlIO_list_t *
e3f3bf95
NIS
765PerlIO_default_layers(pTHX)
766{
14a5cf38
JH
767 if (!PerlIO_def_layerlist) {
768 const char *s = (PL_tainting) ? Nullch : PerlEnv_getenv("PERLIO");
769 PerlIO_funcs *osLayer = &PerlIO_unix;
770 PerlIO_def_layerlist = PerlIO_list_alloc();
771 PerlIO_define_layer(aTHX_ & PerlIO_unix);
e1caacb4 772#if defined(WIN32) && !defined(UNDER_CE)
14a5cf38 773 PerlIO_define_layer(aTHX_ & PerlIO_win32);
2f8118af 774#if 0
14a5cf38 775 osLayer = &PerlIO_win32;
0c4128ad 776#endif
2f8118af 777#endif
14a5cf38
JH
778 PerlIO_define_layer(aTHX_ & PerlIO_raw);
779 PerlIO_define_layer(aTHX_ & PerlIO_perlio);
780 PerlIO_define_layer(aTHX_ & PerlIO_stdio);
781 PerlIO_define_layer(aTHX_ & PerlIO_crlf);
06da4f11 782#ifdef HAS_MMAP
14a5cf38 783 PerlIO_define_layer(aTHX_ & PerlIO_mmap);
06da4f11 784#endif
14a5cf38
JH
785 PerlIO_define_layer(aTHX_ & PerlIO_utf8);
786 PerlIO_define_layer(aTHX_ & PerlIO_byte);
787 PerlIO_list_push(PerlIO_def_layerlist,
788 PerlIO_find_layer(aTHX_ osLayer->name, 0, 0),
789 &PL_sv_undef);
790 if (s) {
791 PerlIO_parse_layers(aTHX_ PerlIO_def_layerlist, s);
792 }
793 else {
794 PerlIO_default_buffer(aTHX_ PerlIO_def_layerlist);
795 }
1141d9f8 796 }
14a5cf38
JH
797 if (PerlIO_def_layerlist->cur < 2) {
798 PerlIO_default_buffer(aTHX_ PerlIO_def_layerlist);
f3862f8b 799 }
14a5cf38 800 return PerlIO_def_layerlist;
e3f3bf95
NIS
801}
802
0c4f7ff0
NIS
803void
804Perl_boot_core_PerlIO(pTHX)
805{
806#ifdef USE_ATTRIBUTES_FOR_PERLIO
14a5cf38
JH
807 newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES,
808 __FILE__);
0c4f7ff0 809#endif
14a5cf38 810 newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__);
0c4f7ff0 811}
e3f3bf95
NIS
812
813PerlIO_funcs *
814PerlIO_default_layer(pTHX_ I32 n)
815{
14a5cf38
JH
816 PerlIO_list_t *av = PerlIO_default_layers(aTHX);
817 if (n < 0)
818 n += av->cur;
819 return PerlIO_layer_fetch(aTHX_ av, n, &PerlIO_stdio);
f3862f8b
NIS
820}
821
a999f61b
NIS
822#define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1)
823#define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0)
60382766
NIS
824
825void
1141d9f8 826PerlIO_stdstreams(pTHX)
60382766 827{
14a5cf38
JH
828 if (!_perlio) {
829 PerlIO_allocate(aTHX);
830 PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT);
831 PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT);
832 PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT);
833 }
60382766
NIS
834}
835
836PerlIO *
14a5cf38
JH
837PerlIO_push(pTHX_ PerlIO *f, PerlIO_funcs *tab, const char *mode, SV *arg)
838{
839 PerlIOl *l = NULL;
840 l = PerlMemShared_calloc(tab->size, sizeof(char));
841 if (l) {
842 Zero(l, tab->size, char);
843 l->next = *f;
844 l->tab = tab;
845 *f = l;
846 PerlIO_debug("PerlIO_push f=%p %s %s %p\n", f, tab->name,
847 (mode) ? mode : "(Null)", arg);
848 if ((*l->tab->Pushed) (f, mode, arg) != 0) {
849 PerlIO_pop(aTHX_ f);
850 return NULL;
851 }
852 }
853 return f;
60382766
NIS
854}
855
dfebf958 856IV
e3f3bf95 857PerlIOPop_pushed(PerlIO *f, const char *mode, SV *arg)
4b803d04 858{
14a5cf38
JH
859 dTHX;
860 PerlIO_pop(aTHX_ f);
861 if (*f) {
862 PerlIO_flush(f);
863 PerlIO_pop(aTHX_ f);
864 return 0;
865 }
866 return -1;
4b803d04
NIS
867}
868
869IV
e3f3bf95 870PerlIORaw_pushed(PerlIO *f, const char *mode, SV *arg)
dfebf958 871{
14a5cf38 872 /*
71200d45 873 * Remove the dummy layer
14a5cf38
JH
874 */
875 dTHX;
876 PerlIO_pop(aTHX_ f);
877 /*
71200d45 878 * Pop back to bottom layer
14a5cf38
JH
879 */
880 if (f && *f) {
881 PerlIO_flush(f);
882 while (!(PerlIOBase(f)->tab->kind & PERLIO_K_RAW)) {
883 if (*PerlIONext(f)) {
884 PerlIO_pop(aTHX_ f);
885 }
886 else {
887 /*
71200d45 888 * Nothing bellow - push unix on top then remove it
14a5cf38
JH
889 */
890 if (PerlIO_push(aTHX_ f, PerlIO_default_btm(), mode, arg)) {
891 PerlIO_pop(aTHX_ PerlIONext(f));
892 }
893 break;
894 }
895 }
896 PerlIO_debug(":raw f=%p :%s\n", f, PerlIOBase(f)->tab->name);
897 return 0;
898 }
899 return -1;
dfebf958
NIS
900}
901
ac27b0f5 902int
14a5cf38
JH
903PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode,
904 PerlIO_list_t *layers, IV n)
905{
906 IV max = layers->cur;
907 int code = 0;
908 while (n < max) {
909 PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL);
910 if (tab) {
911 if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) {
912 code = -1;
913 break;
914 }
915 }
916 n++;
917 }
918 return code;
e3f3bf95
NIS
919}
920
921int
ac27b0f5
NIS
922PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names)
923{
14a5cf38
JH
924 int code = 0;
925 if (names) {
926 PerlIO_list_t *layers = PerlIO_list_alloc();
927 code = PerlIO_parse_layers(aTHX_ layers, names);
928 if (code == 0) {
929 code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0);
930 }
931 PerlIO_list_free(layers);
ac27b0f5 932 }
14a5cf38 933 return code;
ac27b0f5
NIS
934}
935
f3862f8b 936
60382766 937/*--------------------------------------------------------------------------------------*/
14a5cf38 938/*
71200d45 939 * Given the abstraction above the public API functions
14a5cf38 940 */
60382766
NIS
941
942int
f5b9d040 943PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names)
76ced9ad 944{
14a5cf38
JH
945 PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n",
946 f, PerlIOBase(f)->tab->name, iotype, mode,
947 (names) ? names : "(Null)");
89aec743 948 PerlIO_flush(f);
14a5cf38
JH
949 if (!names && (O_TEXT != O_BINARY && (mode & O_BINARY))) {
950 PerlIO *top = f;
951 while (*top) {
952 if (PerlIOBase(top)->tab == &PerlIO_crlf) {
14a5cf38
JH
953 PerlIOBase(top)->flags &= ~PERLIO_F_CRLF;
954 break;
955 }
956 top = PerlIONext(top);
89aec743 957 PerlIO_flush(top);
14a5cf38
JH
958 }
959 }
960 return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE;
f5b9d040
NIS
961}
962
963#undef PerlIO__close
964int
965PerlIO__close(PerlIO *f)
966{
14a5cf38
JH
967 if (f && *f)
968 return (*PerlIOBase(f)->tab->Close) (f);
969 else {
970 SETERRNO(EBADF, SS$_IVCHAN);
971 return -1;
972 }
76ced9ad
NIS
973}
974
5f1a76d0
NIS
975#undef PerlIO_fdupopen
976PerlIO *
8cf8f3d1 977PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param)
5f1a76d0 978{
14a5cf38 979 if (f && *f) {
8cf8f3d1 980 PerlIO_funcs *tab = PerlIOBase(f)->tab;
a8fc9800
NIS
981 PerlIO *new;
982 PerlIO_debug("fdupopen f=%p param=%p\n",f,param);
983 new = (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX),f,param);
14a5cf38
JH
984 return new;
985 }
986 else {
987 SETERRNO(EBADF, SS$_IVCHAN);
988 return NULL;
989 }
5f1a76d0 990}
f5b9d040 991
b931b1d9
NIS
992#undef PerlIO_close
993int
994PerlIO_close(PerlIO *f)
995{
14a5cf38
JH
996 dTHX;
997 int code = -1;
998 if (f && *f) {
999 code = (*PerlIOBase(f)->tab->Close) (f);
1000 while (*f) {
1001 PerlIO_pop(aTHX_ f);
1002 }
f6c77cf1 1003 }
14a5cf38 1004 return code;
b931b1d9
NIS
1005}
1006
1007#undef PerlIO_fileno
1008int
1009PerlIO_fileno(PerlIO *f)
1010{
14a5cf38
JH
1011 if (f && *f)
1012 return (*PerlIOBase(f)->tab->Fileno) (f);
1013 else {
1014 SETERRNO(EBADF, SS$_IVCHAN);
1015 return -1;
1016 }
b931b1d9
NIS
1017}
1018
1141d9f8
NIS
1019static const char *
1020PerlIO_context_layers(pTHX_ const char *mode)
1021{
14a5cf38
JH
1022 const char *type = NULL;
1023 /*
71200d45 1024 * Need to supply default layer info from open.pm
14a5cf38
JH
1025 */
1026 if (PL_curcop) {
1027 SV *layers = PL_curcop->cop_io;
1028 if (layers) {
1029 STRLEN len;
1030 type = SvPV(layers, len);
1031 if (type && mode[0] != 'r') {
1032 /*
71200d45 1033 * Skip to write part
14a5cf38
JH
1034 */
1035 const char *s = strchr(type, 0);
1036 if (s && (s - type) < len) {
1037 type = s + 1;
1038 }
1039 }
1040 }
1041 }
1042 return type;
1141d9f8
NIS
1043}
1044
fcf2db38 1045static PerlIO_funcs *
2edd7e44
NIS
1046PerlIO_layer_from_ref(pTHX_ SV *sv)
1047{
14a5cf38 1048 /*
71200d45 1049 * For any scalar type load the handler which is bundled with perl
14a5cf38
JH
1050 */
1051 if (SvTYPE(sv) < SVt_PVAV)
1052 return PerlIO_find_layer(aTHX_ "Scalar", 6, 1);
1053
1054 /*
71200d45 1055 * For other types allow if layer is known but don't try and load it
14a5cf38
JH
1056 */
1057 switch (SvTYPE(sv)) {
1058 case SVt_PVAV:
1059 return PerlIO_find_layer(aTHX_ "Array", 5, 0);
1060 case SVt_PVHV:
1061 return PerlIO_find_layer(aTHX_ "Hash", 4, 0);
1062 case SVt_PVCV:
1063 return PerlIO_find_layer(aTHX_ "Code", 4, 0);
1064 case SVt_PVGV:
1065 return PerlIO_find_layer(aTHX_ "Glob", 4, 0);
1066 }
1067 return NULL;
2edd7e44
NIS
1068}
1069
fcf2db38 1070PerlIO_list_t *
14a5cf38
JH
1071PerlIO_resolve_layers(pTHX_ const char *layers,
1072 const char *mode, int narg, SV **args)
1073{
1074 PerlIO_list_t *def = PerlIO_default_layers(aTHX);
1075 int incdef = 1;
1076 if (!_perlio)
1077 PerlIO_stdstreams(aTHX);
1078 if (narg) {
1079 SV *arg = *args;
1080 /*
71200d45
NIS
1081 * If it is a reference but not an object see if we have a handler
1082 * for it
14a5cf38
JH
1083 */
1084 if (SvROK(arg) && !sv_isobject(arg)) {
1085 PerlIO_funcs *handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg));
1086 if (handler) {
1087 def = PerlIO_list_alloc();
1088 PerlIO_list_push(def, handler, &PL_sv_undef);
1089 incdef = 0;
1090 }
1091 /*
71200d45 1092 * Don't fail if handler cannot be found :Via(...) etc. may do
14a5cf38 1093 * something sensible else we will just stringfy and open
71200d45 1094 * resulting string.
14a5cf38
JH
1095 */
1096 }
1097 }
1098 if (!layers)
1099 layers = PerlIO_context_layers(aTHX_ mode);
1100 if (layers && *layers) {
1101 PerlIO_list_t *av;
1102 if (incdef) {
1103 IV i = def->cur;
1104 av = PerlIO_list_alloc();
1105 for (i = 0; i < def->cur; i++) {
1106 PerlIO_list_push(av, def->array[i].funcs,
1107 def->array[i].arg);
1108 }
1109 }
1110 else {
1111 av = def;
1112 }
1113 PerlIO_parse_layers(aTHX_ av, layers);
1114 return av;
1115 }
1116 else {
1117 if (incdef)
1118 def->refcnt++;
1119 return def;
1120 }
ee518936
NIS
1121}
1122
1123PerlIO *
14a5cf38
JH
1124PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd,
1125 int imode, int perm, PerlIO *f, int narg, SV **args)
1126{
1127 if (!f && narg == 1 && *args == &PL_sv_undef) {
1128 if ((f = PerlIO_tmpfile())) {
1129 if (!layers)
1130 layers = PerlIO_context_layers(aTHX_ mode);
1131 if (layers && *layers)
1132 PerlIO_apply_layers(aTHX_ f, mode, layers);
1133 }
1134 }
1135 else {
1136 PerlIO_list_t *layera = NULL;
1137 IV n;
1138 PerlIO_funcs *tab = NULL;
1139 if (f && *f) {
1140 /*
71200d45
NIS
1141 * This is "reopen" - it is not tested as perl does not use it
1142 * yet
14a5cf38
JH
1143 */
1144 PerlIOl *l = *f;
1145 layera = PerlIO_list_alloc();
1146 while (l) {
1147 SV *arg =
1148 (l->tab->Getarg) ? (*l->tab->
1149 Getarg) (&l) : &PL_sv_undef;
1150 PerlIO_list_push(layera, l->tab, arg);
1151 l = *PerlIONext(&l);
1152 }
1153 }
1154 else {
1155 layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args);
1156 }
1157 /*
71200d45 1158 * Start at "top" of layer stack
14a5cf38
JH
1159 */
1160 n = layera->cur - 1;
1161 while (n >= 0) {
1162 PerlIO_funcs *t = PerlIO_layer_fetch(aTHX_ layera, n, NULL);
1163 if (t && t->Open) {
1164 tab = t;
1165 break;
1166 }
1167 n--;
1168 }
1169 if (tab) {
1170 /*
71200d45 1171 * Found that layer 'n' can do opens - call it
14a5cf38
JH
1172 */
1173 PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n",
1174 tab->name, layers, mode, fd, imode, perm, f, narg,
1175 args);
1176 f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm,
1177 f, narg, args);
1178 if (f) {
1179 if (n + 1 < layera->cur) {
1180 /*
1181 * More layers above the one that we used to open -
71200d45 1182 * apply them now
14a5cf38
JH
1183 */
1184 if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1)
1185 != 0) {
1186 f = NULL;
1187 }
1188 }
1189 }
1190 }
1191 PerlIO_list_free(layera);
1192 }
1193 return f;
ee518936 1194}
b931b1d9
NIS
1195
1196
9e353e3b
NIS
1197#undef PerlIO_fdopen
1198PerlIO *
1199PerlIO_fdopen(int fd, const char *mode)
1200{
14a5cf38
JH
1201 dTHX;
1202 return PerlIO_openn(aTHX_ Nullch, mode, fd, 0, 0, NULL, 0, NULL);
9e353e3b
NIS
1203}
1204
6f9d8c32
NIS
1205#undef PerlIO_open
1206PerlIO *
1207PerlIO_open(const char *path, const char *mode)
1208{
14a5cf38
JH
1209 dTHX;
1210 SV *name = sv_2mortal(newSVpvn(path, strlen(path)));
1211 return PerlIO_openn(aTHX_ Nullch, mode, -1, 0, 0, NULL, 1, &name);
6f9d8c32
NIS
1212}
1213
9e353e3b
NIS
1214#undef PerlIO_reopen
1215PerlIO *
1216PerlIO_reopen(const char *path, const char *mode, PerlIO *f)
6f9d8c32 1217{
14a5cf38
JH
1218 dTHX;
1219 SV *name = sv_2mortal(newSVpvn(path, strlen(path)));
1220 return PerlIO_openn(aTHX_ Nullch, mode, -1, 0, 0, f, 1, &name);
760ac839
LW
1221}
1222
9e353e3b
NIS
1223#undef PerlIO_read
1224SSize_t
1225PerlIO_read(PerlIO *f, void *vbuf, Size_t count)
6f9d8c32 1226{
14a5cf38
JH
1227 if (f && *f)
1228 return (*PerlIOBase(f)->tab->Read) (f, vbuf, count);
1229 else {
1230 SETERRNO(EBADF, SS$_IVCHAN);
1231 return -1;
1232 }
760ac839
LW
1233}
1234
313ca112
NIS
1235#undef PerlIO_unread
1236SSize_t
1237PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count)
760ac839 1238{
14a5cf38
JH
1239 if (f && *f)
1240 return (*PerlIOBase(f)->tab->Unread) (f, vbuf, count);
1241 else {
1242 SETERRNO(EBADF, SS$_IVCHAN);
1243 return -1;
1244 }
760ac839
LW
1245}
1246
9e353e3b
NIS
1247#undef PerlIO_write
1248SSize_t
1249PerlIO_write(PerlIO *f, const void *vbuf, Size_t count)
760ac839 1250{
14a5cf38
JH
1251 if (f && *f)
1252 return (*PerlIOBase(f)->tab->Write) (f, vbuf, count);
1253 else {
1254 SETERRNO(EBADF, SS$_IVCHAN);
1255 return -1;
1256 }
760ac839
LW
1257}
1258
9e353e3b 1259#undef PerlIO_seek
6f9d8c32 1260int
9e353e3b 1261PerlIO_seek(PerlIO *f, Off_t offset, int whence)
760ac839 1262{
14a5cf38
JH
1263 if (f && *f)
1264 return (*PerlIOBase(f)->tab->Seek) (f, offset, whence);
1265 else {
1266 SETERRNO(EBADF, SS$_IVCHAN);
1267 return -1;
1268 }
760ac839
LW
1269}
1270
9e353e3b
NIS
1271#undef PerlIO_tell
1272Off_t
1273PerlIO_tell(PerlIO *f)
760ac839 1274{
14a5cf38
JH
1275 if (f && *f)
1276 return (*PerlIOBase(f)->tab->Tell) (f);
1277 else {
1278 SETERRNO(EBADF, SS$_IVCHAN);
1279 return -1;
1280 }
760ac839
LW
1281}
1282
9e353e3b 1283#undef PerlIO_flush
6f9d8c32 1284int
9e353e3b 1285PerlIO_flush(PerlIO *f)
760ac839 1286{
14a5cf38
JH
1287 if (f) {
1288 if (*f) {
1289 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1290 if (tab && tab->Flush) {
1291 return (*tab->Flush) (f);
1292 }
1293 else {
1294 PerlIO_debug("Cannot flush f=%p :%s\n", f, tab->name);
1295 SETERRNO(EBADF, SS$_IVCHAN);
1296 return -1;
1297 }
1298 }
1299 else {
1300 PerlIO_debug("Cannot flush f=%p\n", f);
1301 SETERRNO(EBADF, SS$_IVCHAN);
1302 return -1;
1303 }
1304 }
1305 else {
1306 /*
1307 * Is it good API design to do flush-all on NULL, a potentially
1308 * errorneous input? Maybe some magical value (PerlIO*
1309 * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar
1310 * things on fflush(NULL), but should we be bound by their design
71200d45 1311 * decisions? --jhi
14a5cf38
JH
1312 */
1313 PerlIO **table = &_perlio;
1314 int code = 0;
1315 while ((f = *table)) {
1316 int i;
1317 table = (PerlIO **) (f++);
1318 for (i = 1; i < PERLIO_TABLE_SIZE; i++) {
1319 if (*f && PerlIO_flush(f) != 0)
1320 code = -1;
1321 f++;
1322 }
1323 }
1324 return code;
1325 }
760ac839
LW
1326}
1327
a9c883f6
NIS
1328void
1329PerlIOBase_flush_linebuf()
1330{
14a5cf38
JH
1331 PerlIO **table = &_perlio;
1332 PerlIO *f;
1333 while ((f = *table)) {
1334 int i;
1335 table = (PerlIO **) (f++);
1336 for (i = 1; i < PERLIO_TABLE_SIZE; i++) {
1337 if (*f
1338 && (PerlIOBase(f)->
1339 flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE))
1340 == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE))
1341 PerlIO_flush(f);
1342 f++;
1343 }
a9c883f6 1344 }
a9c883f6
NIS
1345}
1346
06da4f11
NIS
1347#undef PerlIO_fill
1348int
1349PerlIO_fill(PerlIO *f)
1350{
14a5cf38
JH
1351 if (f && *f)
1352 return (*PerlIOBase(f)->tab->Fill) (f);
1353 else {
1354 SETERRNO(EBADF, SS$_IVCHAN);
1355 return -1;
1356 }
06da4f11
NIS
1357}
1358
f3862f8b
NIS
1359#undef PerlIO_isutf8
1360int
1361PerlIO_isutf8(PerlIO *f)
1362{
14a5cf38
JH
1363 if (f && *f)
1364 return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0;
1365 else {
1366 SETERRNO(EBADF, SS$_IVCHAN);
1367 return -1;
1368 }
f3862f8b
NIS
1369}
1370
9e353e3b 1371#undef PerlIO_eof
6f9d8c32 1372int
9e353e3b 1373PerlIO_eof(PerlIO *f)
760ac839 1374{
14a5cf38
JH
1375 if (f && *f)
1376 return (*PerlIOBase(f)->tab->Eof) (f);
1377 else {
1378 SETERRNO(EBADF, SS$_IVCHAN);
1379 return -1;
1380 }
9e353e3b
NIS
1381}
1382
1383#undef PerlIO_error
1384int
1385PerlIO_error(PerlIO *f)
1386{
14a5cf38
JH
1387 if (f && *f)
1388 return (*PerlIOBase(f)->tab->Error) (f);
1389 else {
1390 SETERRNO(EBADF, SS$_IVCHAN);
1391 return -1;
1392 }
9e353e3b
NIS
1393}
1394
1395#undef PerlIO_clearerr
1396void
1397PerlIO_clearerr(PerlIO *f)
1398{
14a5cf38
JH
1399 if (f && *f)
1400 (*PerlIOBase(f)->tab->Clearerr) (f);
1401 else
1402 SETERRNO(EBADF, SS$_IVCHAN);
9e353e3b
NIS
1403}
1404
1405#undef PerlIO_setlinebuf
1406void
1407PerlIO_setlinebuf(PerlIO *f)
1408{
14a5cf38
JH
1409 if (f && *f)
1410 (*PerlIOBase(f)->tab->Setlinebuf) (f);
1411 else
1412 SETERRNO(EBADF, SS$_IVCHAN);
9e353e3b
NIS
1413}
1414
1415#undef PerlIO_has_base
1416int
1417PerlIO_has_base(PerlIO *f)
1418{
14a5cf38
JH
1419 if (f && *f) {
1420 return (PerlIOBase(f)->tab->Get_base != NULL);
1421 }
1422 return 0;
760ac839
LW
1423}
1424
9e353e3b
NIS
1425#undef PerlIO_fast_gets
1426int
1427PerlIO_fast_gets(PerlIO *f)
760ac839 1428{
14a5cf38
JH
1429 if (f && *f && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) {
1430 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1431 return (tab->Set_ptrcnt != NULL);
1432 }
1433 return 0;
9e353e3b
NIS
1434}
1435
1436#undef PerlIO_has_cntptr
1437int
1438PerlIO_has_cntptr(PerlIO *f)
1439{
14a5cf38
JH
1440 if (f && *f) {
1441 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1442 return (tab->Get_ptr != NULL && tab->Get_cnt != NULL);
1443 }
1444 return 0;
9e353e3b
NIS
1445}
1446
1447#undef PerlIO_canset_cnt
1448int
1449PerlIO_canset_cnt(PerlIO *f)
1450{
14a5cf38
JH
1451 if (f && *f) {
1452 PerlIOl *l = PerlIOBase(f);
1453 return (l->tab->Set_ptrcnt != NULL);
1454 }
1455 return 0;
760ac839
LW
1456}
1457
1458#undef PerlIO_get_base
888911fc 1459STDCHAR *
a20bf0c3 1460PerlIO_get_base(PerlIO *f)
760ac839 1461{
14a5cf38
JH
1462 if (f && *f)
1463 return (*PerlIOBase(f)->tab->Get_base) (f);
1464 return NULL;
9e353e3b
NIS
1465}
1466
1467#undef PerlIO_get_bufsiz
1468int
1469PerlIO_get_bufsiz(PerlIO *f)
1470{
14a5cf38
JH
1471 if (f && *f)
1472 return (*PerlIOBase(f)->tab->Get_bufsiz) (f);
1473 return 0;
9e353e3b
NIS
1474}
1475
1476#undef PerlIO_get_ptr
1477STDCHAR *
1478PerlIO_get_ptr(PerlIO *f)
1479{
14a5cf38
JH
1480 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1481 if (tab->Get_ptr == NULL)
1482 return NULL;
1483 return (*tab->Get_ptr) (f);
9e353e3b
NIS
1484}
1485
1486#undef PerlIO_get_cnt
05d1247b 1487int
9e353e3b
NIS
1488PerlIO_get_cnt(PerlIO *f)
1489{
14a5cf38
JH
1490 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1491 if (tab->Get_cnt == NULL)
1492 return 0;
1493 return (*tab->Get_cnt) (f);
9e353e3b
NIS
1494}
1495
1496#undef PerlIO_set_cnt
1497void
14a5cf38 1498PerlIO_set_cnt(PerlIO *f, int cnt)
9e353e3b 1499{
14a5cf38 1500 (*PerlIOBase(f)->tab->Set_ptrcnt) (f, NULL, cnt);
9e353e3b
NIS
1501}
1502
1503#undef PerlIO_set_ptrcnt
1504void
14a5cf38 1505PerlIO_set_ptrcnt(PerlIO *f, STDCHAR * ptr, int cnt)
9e353e3b 1506{
14a5cf38
JH
1507 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1508 if (tab->Set_ptrcnt == NULL) {
1509 dTHX;
1510 Perl_croak(aTHX_ "PerlIO buffer snooping abuse");
1511 }
1512 (*PerlIOBase(f)->tab->Set_ptrcnt) (f, ptr, cnt);
9e353e3b
NIS
1513}
1514
1515/*--------------------------------------------------------------------------------------*/
14a5cf38 1516/*
71200d45 1517 * utf8 and raw dummy layers
14a5cf38 1518 */
dfebf958 1519
26fb694e 1520IV
e3f3bf95 1521PerlIOUtf8_pushed(PerlIO *f, const char *mode, SV *arg)
26fb694e 1522{
14a5cf38
JH
1523 if (PerlIONext(f)) {
1524 dTHX;
1525 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1526 PerlIO_pop(aTHX_ f);
1527 if (tab->kind & PERLIO_K_UTF8)
1528 PerlIOBase(f)->flags |= PERLIO_F_UTF8;
1529 else
1530 PerlIOBase(f)->flags &= ~PERLIO_F_UTF8;
1531 return 0;
1532 }
1533 return -1;
26fb694e
NIS
1534}
1535
dfebf958 1536PerlIO_funcs PerlIO_utf8 = {
14a5cf38
JH
1537 "utf8",
1538 sizeof(PerlIOl),
1539 PERLIO_K_DUMMY | PERLIO_F_UTF8,
1540 PerlIOUtf8_pushed,
1541 NULL,
1542 NULL,
1543 NULL,
1544 NULL,
1545 NULL,
1546 NULL,
1547 NULL,
1548 NULL,
1549 NULL,
1550 NULL,
1551 NULL, /* flush */
1552 NULL, /* fill */
1553 NULL,
1554 NULL,
1555 NULL,
1556 NULL,
1557 NULL, /* get_base */
1558 NULL, /* get_bufsiz */
1559 NULL, /* get_ptr */
1560 NULL, /* get_cnt */
1561 NULL, /* set_ptrcnt */
26fb694e
NIS
1562};
1563
1564PerlIO_funcs PerlIO_byte = {
14a5cf38
JH
1565 "bytes",
1566 sizeof(PerlIOl),
1567 PERLIO_K_DUMMY,
1568 PerlIOUtf8_pushed,
1569 NULL,
1570 NULL,
1571 NULL,
1572 NULL,
1573 NULL,
1574 NULL,
1575 NULL,
1576 NULL,
1577 NULL,
1578 NULL,
1579 NULL, /* flush */
1580 NULL, /* fill */
1581 NULL,
1582 NULL,
1583 NULL,
1584 NULL,
1585 NULL, /* get_base */
1586 NULL, /* get_bufsiz */
1587 NULL, /* get_ptr */
1588 NULL, /* get_cnt */
1589 NULL, /* set_ptrcnt */
dfebf958
NIS
1590};
1591
1592PerlIO *
14a5cf38
JH
1593PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers,
1594 IV n, const char *mode, int fd, int imode, int perm,
1595 PerlIO *old, int narg, SV **args)
dfebf958 1596{
14a5cf38
JH
1597 PerlIO_funcs *tab = PerlIO_default_btm();
1598 return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm,
1599 old, narg, args);
dfebf958
NIS
1600}
1601
1602PerlIO_funcs PerlIO_raw = {
14a5cf38
JH
1603 "raw",
1604 sizeof(PerlIOl),
1605 PERLIO_K_DUMMY,
1606 PerlIORaw_pushed,
1607 PerlIOBase_popped,
1608 PerlIORaw_open,
1609 NULL,
1610 NULL,
1611 NULL,
1612 NULL,
1613 NULL,
1614 NULL,
1615 NULL,
1616 NULL,
1617 NULL, /* flush */
1618 NULL, /* fill */
1619 NULL,
1620 NULL,
1621 NULL,
1622 NULL,
1623 NULL, /* get_base */
1624 NULL, /* get_bufsiz */
1625 NULL, /* get_ptr */
1626 NULL, /* get_cnt */
1627 NULL, /* set_ptrcnt */
dfebf958
NIS
1628};
1629/*--------------------------------------------------------------------------------------*/
1630/*--------------------------------------------------------------------------------------*/
14a5cf38 1631/*
71200d45 1632 * "Methods" of the "base class"
14a5cf38 1633 */
9e353e3b
NIS
1634
1635IV
1636PerlIOBase_fileno(PerlIO *f)
1637{
14a5cf38 1638 return PerlIO_fileno(PerlIONext(f));
9e353e3b
NIS
1639}
1640
f5b9d040 1641char *
14a5cf38
JH
1642PerlIO_modestr(PerlIO *f, char *buf)
1643{
1644 char *s = buf;
1645 IV flags = PerlIOBase(f)->flags;
1646 if (flags & PERLIO_F_APPEND) {
1647 *s++ = 'a';
1648 if (flags & PERLIO_F_CANREAD) {
1649 *s++ = '+';
1650 }
1651 }
1652 else if (flags & PERLIO_F_CANREAD) {
1653 *s++ = 'r';
1654 if (flags & PERLIO_F_CANWRITE)
1655 *s++ = '+';
1656 }
1657 else if (flags & PERLIO_F_CANWRITE) {
1658 *s++ = 'w';
1659 if (flags & PERLIO_F_CANREAD) {
1660 *s++ = '+';
1661 }
1662 }
5f1a76d0 1663#if O_TEXT != O_BINARY
14a5cf38
JH
1664 if (!(flags & PERLIO_F_CRLF))
1665 *s++ = 'b';
5f1a76d0 1666#endif
14a5cf38
JH
1667 *s = '\0';
1668 return buf;
f5b9d040
NIS
1669}
1670
76ced9ad 1671IV
e3f3bf95 1672PerlIOBase_pushed(PerlIO *f, const char *mode, SV *arg)
9e353e3b 1673{
14a5cf38 1674 PerlIOl *l = PerlIOBase(f);
b7953727 1675#if 0
14a5cf38
JH
1676 const char *omode = mode;
1677 char temp[8];
b7953727 1678#endif
14a5cf38
JH
1679 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1680 l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE |
1681 PERLIO_F_TRUNCATE | PERLIO_F_APPEND);
1682 if (tab->Set_ptrcnt != NULL)
1683 l->flags |= PERLIO_F_FASTGETS;
1684 if (mode) {
1685 if (*mode == '#' || *mode == 'I')
1686 mode++;
1687 switch (*mode++) {
1688 case 'r':
1689 l->flags |= PERLIO_F_CANREAD;
1690 break;
1691 case 'a':
1692 l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE;
1693 break;
1694 case 'w':
1695 l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE;
1696 break;
1697 default:
1698 SETERRNO(EINVAL, LIB$_INVARG);
1699 return -1;
1700 }
1701 while (*mode) {
1702 switch (*mode++) {
1703 case '+':
1704 l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE;
1705 break;
1706 case 'b':
1707 l->flags &= ~PERLIO_F_CRLF;
1708 break;
1709 case 't':
1710 l->flags |= PERLIO_F_CRLF;
1711 break;
1712 default:
1713 SETERRNO(EINVAL, LIB$_INVARG);
1714 return -1;
1715 }
1716 }
1717 }
1718 else {
1719 if (l->next) {
1720 l->flags |= l->next->flags &
1721 (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE |
1722 PERLIO_F_APPEND);
1723 }
1724 }
5e2ab84b 1725#if 0
14a5cf38
JH
1726 PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n",
1727 f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)",
1728 l->flags, PerlIO_modestr(f, temp));
5e2ab84b 1729#endif
14a5cf38 1730 return 0;
76ced9ad
NIS
1731}
1732
1733IV
1734PerlIOBase_popped(PerlIO *f)
1735{
14a5cf38 1736 return 0;
760ac839
LW
1737}
1738
9e353e3b
NIS
1739SSize_t
1740PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count)
1741{
14a5cf38
JH
1742 dTHX;
1743 /*
71200d45 1744 * Save the position as current head considers it
14a5cf38
JH
1745 */
1746 Off_t old = PerlIO_tell(f);
1747 SSize_t done;
1748 PerlIO_push(aTHX_ f, &PerlIO_pending, "r", Nullsv);
1749 PerlIOSelf(f, PerlIOBuf)->posn = old;
1750 done = PerlIOBuf_unread(f, vbuf, count);
1751 return done;
9e353e3b
NIS
1752}
1753
f6c77cf1
NIS
1754SSize_t
1755PerlIOBase_read(PerlIO *f, void *vbuf, Size_t count)
1756{
14a5cf38
JH
1757 STDCHAR *buf = (STDCHAR *) vbuf;
1758 if (f) {
1759 if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD))
1760 return 0;
1761 while (count > 0) {
1762 SSize_t avail = PerlIO_get_cnt(f);
1763 SSize_t take = 0;
1764 if (avail > 0)
1765 take = (count < avail) ? count : avail;
1766 if (take > 0) {
1767 STDCHAR *ptr = PerlIO_get_ptr(f);
1768 Copy(ptr, buf, take, STDCHAR);
1769 PerlIO_set_ptrcnt(f, ptr + take, (avail -= take));
1770 count -= take;
1771 buf += take;
1772 }
1773 if (count > 0 && avail <= 0) {
1774 if (PerlIO_fill(f) != 0)
1775 break;
1776 }
1777 }
1778 return (buf - (STDCHAR *) vbuf);
1779 }
f6c77cf1 1780 return 0;
f6c77cf1
NIS
1781}
1782
9e353e3b 1783IV
06da4f11 1784PerlIOBase_noop_ok(PerlIO *f)
9e353e3b 1785{
14a5cf38 1786 return 0;
9e353e3b
NIS
1787}
1788
1789IV
06da4f11
NIS
1790PerlIOBase_noop_fail(PerlIO *f)
1791{
14a5cf38 1792 return -1;
06da4f11
NIS
1793}
1794
1795IV
9e353e3b
NIS
1796PerlIOBase_close(PerlIO *f)
1797{
14a5cf38
JH
1798 IV code = 0;
1799 PerlIO *n = PerlIONext(f);
1800 if (PerlIO_flush(f) != 0)
1801 code = -1;
1802 if (n && *n && (*PerlIOBase(n)->tab->Close) (n) != 0)
1803 code = -1;
1804 PerlIOBase(f)->flags &=
1805 ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN);
1806 return code;
9e353e3b
NIS
1807}
1808
1809IV
1810PerlIOBase_eof(PerlIO *f)
1811{
14a5cf38
JH
1812 if (f && *f) {
1813 return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0;
1814 }
1815 return 1;
9e353e3b
NIS
1816}
1817
1818IV
1819PerlIOBase_error(PerlIO *f)
1820{
14a5cf38
JH
1821 if (f && *f) {
1822 return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0;
1823 }
1824 return 1;
9e353e3b
NIS
1825}
1826
1827void
1828PerlIOBase_clearerr(PerlIO *f)
1829{
14a5cf38
JH
1830 if (f && *f) {
1831 PerlIO *n = PerlIONext(f);
1832 PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF);
1833 if (n)
1834 PerlIO_clearerr(n);
1835 }
9e353e3b
NIS
1836}
1837
1838void
1839PerlIOBase_setlinebuf(PerlIO *f)
1840{
14a5cf38
JH
1841 if (f) {
1842 PerlIOBase(f)->flags |= PERLIO_F_LINEBUF;
1843 }
9e353e3b
NIS
1844}
1845
9e353e3b 1846/*--------------------------------------------------------------------------------------*/
14a5cf38 1847/*
71200d45 1848 * Bottom-most level for UNIX-like case
14a5cf38 1849 */
9e353e3b 1850
14a5cf38
JH
1851typedef struct {
1852 struct _PerlIO base; /* The generic part */
1853 int fd; /* UNIX like file descriptor */
1854 int oflags; /* open/fcntl flags */
9e353e3b
NIS
1855} PerlIOUnix;
1856
6f9d8c32 1857int
9e353e3b 1858PerlIOUnix_oflags(const char *mode)
760ac839 1859{
14a5cf38
JH
1860 int oflags = -1;
1861 if (*mode == 'I' || *mode == '#')
1862 mode++;
1863 switch (*mode) {
1864 case 'r':
1865 oflags = O_RDONLY;
1866 if (*++mode == '+') {
1867 oflags = O_RDWR;
1868 mode++;
1869 }
1870 break;
1871
1872 case 'w':
1873 oflags = O_CREAT | O_TRUNC;
1874 if (*++mode == '+') {
1875 oflags |= O_RDWR;
1876 mode++;
1877 }
1878 else
1879 oflags |= O_WRONLY;
1880 break;
1881
1882 case 'a':
1883 oflags = O_CREAT | O_APPEND;
1884 if (*++mode == '+') {
1885 oflags |= O_RDWR;
1886 mode++;
1887 }
1888 else
1889 oflags |= O_WRONLY;
1890 break;
1891 }
1892 if (*mode == 'b') {
1893 oflags |= O_BINARY;
1894 oflags &= ~O_TEXT;
1895 mode++;
1896 }
1897 else if (*mode == 't') {
1898 oflags |= O_TEXT;
1899 oflags &= ~O_BINARY;
1900 mode++;
1901 }
1902 /*
71200d45 1903 * Always open in binary mode
14a5cf38
JH
1904 */
1905 oflags |= O_BINARY;
1906 if (*mode || oflags == -1) {
1907 SETERRNO(EINVAL, LIB$_INVARG);
1908 oflags = -1;
1909 }
1910 return oflags;
9e353e3b
NIS
1911}
1912
1913IV
1914PerlIOUnix_fileno(PerlIO *f)
1915{
14a5cf38 1916 return PerlIOSelf(f, PerlIOUnix)->fd;
9e353e3b
NIS
1917}
1918
4b803d04 1919IV
e3f3bf95 1920PerlIOUnix_pushed(PerlIO *f, const char *mode, SV *arg)
4b803d04 1921{
14a5cf38
JH
1922 IV code = PerlIOBase_pushed(f, mode, arg);
1923 if (*PerlIONext(f)) {
1924 PerlIOUnix *s = PerlIOSelf(f, PerlIOUnix);
1925 s->fd = PerlIO_fileno(PerlIONext(f));
1926 /*
71200d45 1927 * XXX could (or should) we retrieve the oflags from the open file
14a5cf38 1928 * handle rather than believing the "mode" we are passed in? XXX
71200d45 1929 * Should the value on NULL mode be 0 or -1?
14a5cf38
JH
1930 */
1931 s->oflags = mode ? PerlIOUnix_oflags(mode) : -1;
1932 }
1933 PerlIOBase(f)->flags |= PERLIO_F_OPEN;
1934 return code;
4b803d04
NIS
1935}
1936
9e353e3b 1937PerlIO *
14a5cf38
JH
1938PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers,
1939 IV n, const char *mode, int fd, int imode,
1940 int perm, PerlIO *f, int narg, SV **args)
1941{
1942 if (f) {
1943 if (PerlIOBase(f)->flags & PERLIO_F_OPEN)
1944 (*PerlIOBase(f)->tab->Close) (f);
1945 }
1946 if (narg > 0) {
1947 char *path = SvPV_nolen(*args);
1948 if (*mode == '#')
1949 mode++;
1950 else {
1951 imode = PerlIOUnix_oflags(mode);
1952 perm = 0666;
1953 }
1954 if (imode != -1) {
1955 fd = PerlLIO_open3(path, imode, perm);
1956 }
1957 }
1958 if (fd >= 0) {
1959 PerlIOUnix *s;
1960 if (*mode == 'I')
1961 mode++;
1962 if (!f) {
1963 f = PerlIO_allocate(aTHX);
1964 s = PerlIOSelf(PerlIO_push(aTHX_ f, self, mode, PerlIOArg),
1965 PerlIOUnix);
1966 }
1967 else
1968 s = PerlIOSelf(f, PerlIOUnix);
1969 s->fd = fd;
1970 s->oflags = imode;
1971 PerlIOBase(f)->flags |= PERLIO_F_OPEN;
1972 return f;
1973 }
1974 else {
1975 if (f) {
1976 /*
71200d45 1977 * FIXME: pop layers ???
14a5cf38
JH
1978 */
1979 }
1980 return NULL;
1981 }
9e353e3b
NIS
1982}
1983
8cf8f3d1
NIS
1984SV *
1985PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param)
71200d45 1986{
8cf8f3d1
NIS
1987 if (!arg)
1988 return Nullsv;
71200d45 1989#ifdef sv_dup
8cf8f3d1
NIS
1990 if (param) {
1991 return sv_dup(arg, param);
1992 }
1993 else {
1994 return newSVsv(arg);
1995 }
1996#else
1997 return newSVsv(arg);
71200d45 1998#endif
8cf8f3d1
NIS
1999}
2000
2001PerlIO *
2002PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
2003{
2004 PerlIO *nexto = PerlIONext(o);
a8fc9800 2005 PerlIO_debug("PerlIOBase_dup f=%p o=%p param=%p\n",f,o,param);
8cf8f3d1
NIS
2006 if (*nexto) {
2007 PerlIO_funcs *tab = PerlIOBase(nexto)->tab;
2008 f = (*tab->Dup)(aTHX_ f, nexto, param);
71200d45 2009 }
8cf8f3d1
NIS
2010 if (f) {
2011 PerlIO_funcs *self = PerlIOBase(o)->tab;
2012 SV *arg = Nullsv;
2013 char buf[8];
2014 if (self->Getarg) {
2015 arg = (*self->Getarg)(o);
2016 if (arg) {
2017 arg = PerlIO_sv_dup(aTHX_ arg, param);
2018 }
2019 }
2020 f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg);
2021 if (!f && arg) {
2022 SvREFCNT_dec(arg);
2023 }
71200d45 2024 }
71200d45
NIS
2025 return f;
2026}
2027
2028PerlIO *
8cf8f3d1 2029PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
71200d45
NIS
2030{
2031 PerlIOUnix *os = PerlIOSelf(o, PerlIOUnix);
2032 int fd = PerlLIO_dup(os->fd);
2033 if (fd >= 0) {
2034 f = PerlIOBase_dup(aTHX_ f, o, param);
2035 if (f) {
2036 /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */
2037 PerlIOUnix *s = PerlIOSelf(f, PerlIOUnix);
2038 s->fd = fd;
2039 return f;
2040 }
2041 else {
2042 PerlLIO_close(fd);
2043 }
2044 }
2045 return NULL;
2046}
2047
2048
9e353e3b
NIS
2049SSize_t
2050PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count)
2051{
14a5cf38
JH
2052 dTHX;
2053 int fd = PerlIOSelf(f, PerlIOUnix)->fd;
2054 if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD))
2055 return 0;
2056 while (1) {
2057 SSize_t len = PerlLIO_read(fd, vbuf, count);
2058 if (len >= 0 || errno != EINTR) {
2059 if (len < 0)
2060 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2061 else if (len == 0 && count != 0)
2062 PerlIOBase(f)->flags |= PERLIO_F_EOF;
2063 return len;
2064 }
2065 PERL_ASYNC_CHECK();
2066 }
9e353e3b
NIS
2067}
2068
2069SSize_t
2070PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count)
2071{
14a5cf38
JH
2072 dTHX;
2073 int fd = PerlIOSelf(f, PerlIOUnix)->fd;
2074 while (1) {
2075 SSize_t len = PerlLIO_write(fd, vbuf, count);
2076 if (len >= 0 || errno != EINTR) {
2077 if (len < 0)
2078 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2079 return len;
2080 }
2081 PERL_ASYNC_CHECK();
06da4f11 2082 }
9e353e3b
NIS
2083}
2084
2085IV
2086PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence)
2087{
14a5cf38
JH
2088 dSYS;
2089 Off_t new =
2090 PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, offset, whence);
2091 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
2092 return (new == (Off_t) - 1) ? -1 : 0;
9e353e3b
NIS
2093}
2094
2095Off_t
2096PerlIOUnix_tell(PerlIO *f)
2097{
14a5cf38
JH
2098 dSYS;
2099 return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR);
9e353e3b
NIS
2100}
2101
71200d45 2102
9e353e3b
NIS
2103IV
2104PerlIOUnix_close(PerlIO *f)
2105{
14a5cf38
JH
2106 dTHX;
2107 int fd = PerlIOSelf(f, PerlIOUnix)->fd;
2108 int code = 0;
2109 while (PerlLIO_close(fd) != 0) {
2110 if (errno != EINTR) {
2111 code = -1;
2112 break;
2113 }
2114 PERL_ASYNC_CHECK();
2115 }
2116 if (code == 0) {
2117 PerlIOBase(f)->flags &= ~PERLIO_F_OPEN;
2118 }
2119 return code;
9e353e3b
NIS
2120}
2121
2122PerlIO_funcs PerlIO_unix = {
14a5cf38
JH
2123 "unix",
2124 sizeof(PerlIOUnix),
2125 PERLIO_K_RAW,
2126 PerlIOUnix_pushed,
2127 PerlIOBase_noop_ok,
2128 PerlIOUnix_open,
2129 NULL,
2130 PerlIOUnix_fileno,
71200d45 2131 PerlIOUnix_dup,
14a5cf38
JH
2132 PerlIOUnix_read,
2133 PerlIOBase_unread,
2134 PerlIOUnix_write,
2135 PerlIOUnix_seek,
2136 PerlIOUnix_tell,
2137 PerlIOUnix_close,
2138 PerlIOBase_noop_ok, /* flush */
2139 PerlIOBase_noop_fail, /* fill */
2140 PerlIOBase_eof,
2141 PerlIOBase_error,
2142 PerlIOBase_clearerr,
2143 PerlIOBase_setlinebuf,
2144 NULL, /* get_base */
2145 NULL, /* get_bufsiz */
2146 NULL, /* get_ptr */
2147 NULL, /* get_cnt */
2148 NULL, /* set_ptrcnt */
9e353e3b
NIS
2149};
2150
2151/*--------------------------------------------------------------------------------------*/
14a5cf38 2152/*
71200d45 2153 * stdio as a layer
14a5cf38 2154 */
9e353e3b 2155
14a5cf38
JH
2156typedef struct {
2157 struct _PerlIO base;
2158 FILE *stdio; /* The stream */
9e353e3b
NIS
2159} PerlIOStdio;
2160
2161IV
2162PerlIOStdio_fileno(PerlIO *f)
2163{
14a5cf38
JH
2164 dSYS;
2165 return PerlSIO_fileno(PerlIOSelf(f, PerlIOStdio)->stdio);
9e353e3b
NIS
2166}
2167
766a733e 2168char *
14a5cf38
JH
2169PerlIOStdio_mode(const char *mode, char *tmode)
2170{
2171 char *ret = tmode;
2172 while (*mode) {
2173 *tmode++ = *mode++;
2174 }
2175 if (O_BINARY != O_TEXT) {
2176 *tmode++ = 'b';
2177 }
2178 *tmode = '\0';
2179 return ret;
2180}
2181
2182/*
71200d45 2183 * This isn't used yet ...
14a5cf38 2184 */
4b803d04 2185IV
e3f3bf95 2186PerlIOStdio_pushed(PerlIO *f, const char *mode, SV *arg)
4b803d04 2187{
14a5cf38
JH
2188 if (*PerlIONext(f)) {
2189 dSYS;
2190 PerlIOStdio *s = PerlIOSelf(f, PerlIOStdio);
2191 char tmode[8];
2192 FILE *stdio =
2193 PerlSIO_fdopen(PerlIO_fileno(PerlIONext(f)), mode =
2194 PerlIOStdio_mode(mode, tmode));
2195 if (stdio)
2196 s->stdio = stdio;
2197 else
2198 return -1;
2199 }
2200 return PerlIOBase_pushed(f, mode, arg);
4b803d04
NIS
2201}
2202
9e353e3b
NIS
2203#undef PerlIO_importFILE
2204PerlIO *
2205PerlIO_importFILE(FILE *stdio, int fl)
2206{
14a5cf38
JH
2207 dTHX;
2208 PerlIO *f = NULL;
2209 if (stdio) {
2210 PerlIOStdio *s =
2211 PerlIOSelf(PerlIO_push
2212 (aTHX_(f = PerlIO_allocate(aTHX)), &PerlIO_stdio,
2213 "r+", Nullsv), PerlIOStdio);
2214 s->stdio = stdio;
2215 }
2216 return f;
9e353e3b
NIS
2217}
2218
2219PerlIO *
14a5cf38
JH
2220PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers,
2221 IV n, const char *mode, int fd, int imode,
2222 int perm, PerlIO *f, int narg, SV **args)
2223{
2224 char tmode[8];
2225 if (f) {
2226 char *path = SvPV_nolen(*args);
2227 PerlIOStdio *s = PerlIOSelf(f, PerlIOStdio);
2228 FILE *stdio =
2229 PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)),
2230 s->stdio);
2231 if (!s->stdio)
2232 return NULL;
2233 s->stdio = stdio;
2234 return f;
2235 }
2236 else {
2237 if (narg > 0) {
2238 char *path = SvPV_nolen(*args);
2239 if (*mode == '#') {
2240 mode++;
2241 fd = PerlLIO_open3(path, imode, perm);
2242 }
2243 else {
2244 FILE *stdio = PerlSIO_fopen(path, mode);
2245 if (stdio) {
2246 PerlIOStdio *s =
2247 PerlIOSelf(PerlIO_push
2248 (aTHX_(f = PerlIO_allocate(aTHX)), self,
2249 (mode = PerlIOStdio_mode(mode, tmode)),
2250 PerlIOArg),
2251 PerlIOStdio);
2252 s->stdio = stdio;
2253 }
2254 return f;
2255 }
2256 }
2257 if (fd >= 0) {
2258 FILE *stdio = NULL;
2259 int init = 0;
2260 if (*mode == 'I') {
2261 init = 1;
2262 mode++;
2263 }
2264 if (init) {
2265 switch (fd) {
2266 case 0:
2267 stdio = PerlSIO_stdin;
2268 break;
2269 case 1:
2270 stdio = PerlSIO_stdout;
2271 break;
2272 case 2:
2273 stdio = PerlSIO_stderr;
2274 break;
2275 }
2276 }
2277 else {
2278 stdio = PerlSIO_fdopen(fd, mode =
2279 PerlIOStdio_mode(mode, tmode));
2280 }
2281 if (stdio) {
2282 PerlIOStdio *s =
2283 PerlIOSelf(PerlIO_push
2284 (aTHX_(f = PerlIO_allocate(aTHX)), self,
2285 mode, PerlIOArg), PerlIOStdio);
2286 s->stdio = stdio;
2287 return f;
2288 }
2289 }
2290 }
ee518936 2291 return NULL;
9e353e3b
NIS
2292}
2293
2294SSize_t
2295PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count)
2296{
14a5cf38
JH
2297 dSYS;
2298 FILE *s = PerlIOSelf(f, PerlIOStdio)->stdio;
2299 SSize_t got = 0;
2300 if (count == 1) {
2301 STDCHAR *buf = (STDCHAR *) vbuf;
2302 /*
2303 * Perl is expecting PerlIO_getc() to fill the buffer Linux's
71200d45 2304 * stdio does not do that for fread()
14a5cf38
JH
2305 */
2306 int ch = PerlSIO_fgetc(s);
2307 if (ch != EOF) {
2308 *buf = ch;
2309 got = 1;
2310 }
2311 }
2312 else
2313 got = PerlSIO_fread(vbuf, 1, count, s);
2314 return got;
9e353e3b
NIS
2315}
2316
2317SSize_t
2318PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count)
2319{
14a5cf38
JH
2320 dSYS;
2321 FILE *s = PerlIOSelf(f, PerlIOStdio)->stdio;
2322 STDCHAR *buf = ((STDCHAR *) vbuf) + count - 1;
2323 SSize_t unread = 0;
2324 while (count > 0) {
2325 int ch = *buf-- & 0xff;
2326 if (PerlSIO_ungetc(ch, s) != ch)
2327 break;
2328 unread++;
2329 count--;
2330 }
2331 return unread;
9e353e3b
NIS
2332}
2333
2334SSize_t
2335PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count)
2336{
14a5cf38
JH
2337 dSYS;
2338 return PerlSIO_fwrite(vbuf, 1, count,
2339 PerlIOSelf(f, PerlIOStdio)->stdio);
9e353e3b
NIS
2340}
2341
2342IV
2343PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence)
2344{
14a5cf38
JH
2345 dSYS;
2346 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2347 return PerlSIO_fseek(stdio, offset, whence);
9e353e3b
NIS
2348}
2349
2350Off_t
2351PerlIOStdio_tell(PerlIO *f)
2352{
14a5cf38
JH
2353 dSYS;
2354 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2355 return PerlSIO_ftell(stdio);
9e353e3b
NIS
2356}
2357
2358IV
2359PerlIOStdio_close(PerlIO *f)
2360{
14a5cf38 2361 dSYS;
af130d45 2362#ifdef SOCKS5_VERSION_NAME
14a5cf38
JH
2363 int optval;
2364 Sock_size_t optlen = sizeof(int);
8e4bc33b 2365#endif
14a5cf38
JH
2366 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2367 return (
af130d45 2368#ifdef SOCKS5_VERSION_NAME
14a5cf38
JH
2369 (getsockopt
2370 (PerlIO_fileno(f), SOL_SOCKET, SO_TYPE, (void *) &optval,
2371 &optlen) <
2372 0) ? PerlSIO_fclose(stdio) : close(PerlIO_fileno(f))
8e4bc33b 2373#else
14a5cf38 2374 PerlSIO_fclose(stdio)
8e4bc33b 2375#endif
14a5cf38 2376 );
8e4bc33b 2377
9e353e3b
NIS
2378}
2379
2380IV
2381PerlIOStdio_flush(PerlIO *f)
2382{
14a5cf38
JH
2383 dSYS;
2384 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2385 if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) {
2386 return PerlSIO_fflush(stdio);
2387 }
2388 else {
88b61e10 2389#if 0
14a5cf38
JH
2390 /*
2391 * FIXME: This discards ungetc() and pre-read stuff which is not
71200d45 2392 * right if this is just a "sync" from a layer above Suspect right
14a5cf38 2393 * design is to do _this_ but not have layer above flush this
71200d45 2394 * layer read-to-read
14a5cf38
JH
2395 */
2396 /*
71200d45 2397 * Not writeable - sync by attempting a seek
14a5cf38
JH
2398 */
2399 int err = errno;
2400 if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0)
2401 errno = err;
88b61e10 2402#endif
14a5cf38
JH
2403 }
2404 return 0;
9e353e3b
NIS
2405}
2406
2407IV
06da4f11
NIS
2408PerlIOStdio_fill(PerlIO *f)
2409{
14a5cf38
JH
2410 dSYS;
2411 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2412 int c;
2413 /*
71200d45 2414 * fflush()ing read-only streams can cause trouble on some stdio-s
14a5cf38
JH
2415 */
2416 if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) {
2417 if (PerlSIO_fflush(stdio) != 0)
2418 return EOF;
2419 }
2420 c = PerlSIO_fgetc(stdio);
2421 if (c == EOF || PerlSIO_ungetc(c, stdio) != c)
2422 return EOF;
2423 return 0;
06da4f11
NIS
2424}
2425
2426IV
9e353e3b
NIS
2427PerlIOStdio_eof(PerlIO *f)
2428{
14a5cf38
JH
2429 dSYS;
2430 return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio);
9e353e3b
NIS
2431}
2432
2433IV
2434PerlIOStdio_error(PerlIO *f)
2435{
14a5cf38
JH
2436 dSYS;
2437 return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio);
9e353e3b
NIS
2438}
2439
2440void
2441PerlIOStdio_clearerr(PerlIO *f)
2442{
14a5cf38
JH
2443 dSYS;
2444 PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio);
9e353e3b
NIS
2445}
2446
2447void
2448PerlIOStdio_setlinebuf(PerlIO *f)
2449{
14a5cf38 2450 dSYS;
9e353e3b 2451#ifdef HAS_SETLINEBUF
14a5cf38 2452 PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio);
9e353e3b 2453#else
14a5cf38 2454 PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, Nullch, _IOLBF, 0);
9e353e3b
NIS
2455#endif
2456}
2457
2458#ifdef FILE_base
2459STDCHAR *
2460PerlIOStdio_get_base(PerlIO *f)
2461{
14a5cf38
JH
2462 dSYS;
2463 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2464 return PerlSIO_get_base(stdio);
9e353e3b
NIS
2465}
2466
2467Size_t
2468PerlIOStdio_get_bufsiz(PerlIO *f)
2469{
14a5cf38
JH
2470 dSYS;
2471 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2472 return PerlSIO_get_bufsiz(stdio);
9e353e3b
NIS
2473}
2474#endif
2475
2476#ifdef USE_STDIO_PTR
2477STDCHAR *
2478PerlIOStdio_get_ptr(PerlIO *f)
2479{
14a5cf38
JH
2480 dSYS;
2481 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2482 return PerlSIO_get_ptr(stdio);
9e353e3b
NIS
2483}
2484
2485SSize_t
2486PerlIOStdio_get_cnt(PerlIO *f)
2487{
14a5cf38
JH
2488 dSYS;
2489 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2490 return PerlSIO_get_cnt(stdio);
9e353e3b
NIS
2491}
2492
2493void
14a5cf38 2494PerlIOStdio_set_ptrcnt(PerlIO *f, STDCHAR * ptr, SSize_t cnt)
9e353e3b 2495{
14a5cf38
JH
2496 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2497 dSYS;
2498 if (ptr != NULL) {
9e353e3b 2499#ifdef STDIO_PTR_LVALUE
14a5cf38 2500 PerlSIO_set_ptr(stdio, ptr);
9e353e3b 2501#ifdef STDIO_PTR_LVAL_SETS_CNT
14a5cf38
JH
2502 if (PerlSIO_get_cnt(stdio) != (cnt)) {
2503 dTHX;
2504 assert(PerlSIO_get_cnt(stdio) == (cnt));
2505 }
9e353e3b
NIS
2506#endif
2507#if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT))
14a5cf38 2508 /*
71200d45 2509 * Setting ptr _does_ change cnt - we are done
14a5cf38
JH
2510 */
2511 return;
9e353e3b 2512#endif
14a5cf38
JH
2513#else /* STDIO_PTR_LVALUE */
2514 PerlProc_abort();
2515#endif /* STDIO_PTR_LVALUE */
2516 }
2517 /*
71200d45 2518 * Now (or only) set cnt
14a5cf38 2519 */
9e353e3b 2520#ifdef STDIO_CNT_LVALUE
14a5cf38
JH
2521 PerlSIO_set_cnt(stdio, cnt);
2522#else /* STDIO_CNT_LVALUE */
9e353e3b 2523#if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT))
14a5cf38
JH
2524 PerlSIO_set_ptr(stdio,
2525 PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) -
2526 cnt));
2527#else /* STDIO_PTR_LVAL_SETS_CNT */
2528 PerlProc_abort();
2529#endif /* STDIO_PTR_LVAL_SETS_CNT */
2530#endif /* STDIO_CNT_LVALUE */
9e353e3b
NIS
2531}
2532
2533#endif
2534
71200d45 2535PerlIO *
8cf8f3d1 2536PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
71200d45 2537{
a8fc9800 2538 return PerlIOBase_dup(aTHX_ f, o, param);
71200d45
NIS
2539}
2540
9e353e3b 2541PerlIO_funcs PerlIO_stdio = {
14a5cf38
JH
2542 "stdio",
2543 sizeof(PerlIOStdio),
2544 PERLIO_K_BUFFERED,
2545 PerlIOBase_pushed,
2546 PerlIOBase_noop_ok,
2547 PerlIOStdio_open,
2548 NULL,
2549 PerlIOStdio_fileno,
71200d45 2550 PerlIOStdio_dup,
14a5cf38
JH
2551 PerlIOStdio_read,
2552 PerlIOStdio_unread,
2553 PerlIOStdio_write,
2554 PerlIOStdio_seek,
2555 PerlIOStdio_tell,
2556 PerlIOStdio_close,
2557 PerlIOStdio_flush,
2558 PerlIOStdio_fill,
2559 PerlIOStdio_eof,
2560 PerlIOStdio_error,
2561 PerlIOStdio_clearerr,
2562 PerlIOStdio_setlinebuf,
9e353e3b 2563#ifdef FILE_base
14a5cf38
JH
2564 PerlIOStdio_get_base,
2565 PerlIOStdio_get_bufsiz,
9e353e3b 2566#else
14a5cf38
JH
2567 NULL,
2568 NULL,
9e353e3b
NIS
2569#endif
2570#ifdef USE_STDIO_PTR
14a5cf38
JH
2571 PerlIOStdio_get_ptr,
2572 PerlIOStdio_get_cnt,
0eb1d8a4 2573#if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT)))
14a5cf38
JH
2574 PerlIOStdio_set_ptrcnt
2575#else /* STDIO_PTR_LVALUE */
2576 NULL
2577#endif /* STDIO_PTR_LVALUE */
2578#else /* USE_STDIO_PTR */
2579 NULL,
2580 NULL,
2581 NULL
2582#endif /* USE_STDIO_PTR */
9e353e3b
NIS
2583};
2584
2585#undef PerlIO_exportFILE
2586FILE *
2587PerlIO_exportFILE(PerlIO *f, int fl)
2588{
14a5cf38
JH
2589 FILE *stdio;
2590 PerlIO_flush(f);
2591 stdio = fdopen(PerlIO_fileno(f), "r+");
2592 if (stdio) {
2593 dTHX;
2594 PerlIOStdio *s =
2595 PerlIOSelf(PerlIO_push(aTHX_ f, &PerlIO_stdio, "r+", Nullsv),
2596 PerlIOStdio);
2597 s->stdio = stdio;
2598 }
2599 return stdio;
9e353e3b
NIS
2600}
2601
2602#undef PerlIO_findFILE
2603FILE *
2604PerlIO_findFILE(PerlIO *f)
2605{
14a5cf38
JH
2606 PerlIOl *l = *f;
2607 while (l) {
2608 if (l->tab == &PerlIO_stdio) {
2609 PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio);
2610 return s->stdio;
2611 }
2612 l = *PerlIONext(&l);
f7e7eb72 2613 }
14a5cf38 2614 return PerlIO_exportFILE(f, 0);
9e353e3b
NIS
2615}
2616
2617#undef PerlIO_releaseFILE
2618void
2619PerlIO_releaseFILE(PerlIO *p, FILE *f)
2620{
2621}
2622
2623/*--------------------------------------------------------------------------------------*/
14a5cf38 2624/*
71200d45 2625 * perlio buffer layer
14a5cf38 2626 */
9e353e3b 2627
5e2ab84b 2628IV
e3f3bf95 2629PerlIOBuf_pushed(PerlIO *f, const char *mode, SV *arg)
5e2ab84b 2630{
14a5cf38
JH
2631 dSYS;
2632 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2633 int fd = PerlIO_fileno(f);
2634 Off_t posn;
2635 if (fd >= 0 && PerlLIO_isatty(fd)) {
2636 PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY;
2637 }
2638 posn = PerlIO_tell(PerlIONext(f));
2639 if (posn != (Off_t) - 1) {
2640 b->posn = posn;
2641 }
2642 return PerlIOBase_pushed(f, mode, arg);
5e2ab84b
NIS
2643}
2644
9e353e3b 2645PerlIO *
14a5cf38
JH
2646PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers,
2647 IV n, const char *mode, int fd, int imode, int perm,
2648 PerlIO *f, int narg, SV **args)
2649{
2650 if (f) {
2651 PerlIO *next = PerlIONext(f);
2652 PerlIO_funcs *tab =
2653 PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab);
2654 next =
2655 (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm,
2656 next, narg, args);
2657 if (!next
2658 || (*PerlIOBase(f)->tab->Pushed) (f, mode, PerlIOArg) != 0) {
2659 return NULL;
2660 }
2661 }
2662 else {
2663 PerlIO_funcs *tab =
2664 PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm());
2665 int init = 0;
2666 if (*mode == 'I') {
2667 init = 1;
2668 /*
71200d45 2669 * mode++;
14a5cf38
JH
2670 */
2671 }
2672 f = (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm,
2673 NULL, narg, args);
2674 if (f) {
2675 PerlIO_push(aTHX_ f, self, mode, PerlIOArg);
2676 fd = PerlIO_fileno(f);
ee518936 2677#if O_BINARY != O_TEXT
14a5cf38 2678 /*
71200d45 2679 * do something about failing setmode()? --jhi
14a5cf38
JH
2680 */
2681 PerlLIO_setmode(fd, O_BINARY);
ee518936 2682#endif
14a5cf38
JH
2683 if (init && fd == 2) {
2684 /*
71200d45 2685 * Initial stderr is unbuffered
14a5cf38
JH
2686 */
2687 PerlIOBase(f)->flags |= PERLIO_F_UNBUF;
2688 }
2689 }
ee518936 2690 }
14a5cf38 2691 return f;
9e353e3b
NIS
2692}
2693
14a5cf38
JH
2694/*
2695 * This "flush" is akin to sfio's sync in that it handles files in either
71200d45 2696 * read or write state
14a5cf38 2697 */
9e353e3b
NIS
2698IV
2699PerlIOBuf_flush(PerlIO *f)
6f9d8c32 2700{
14a5cf38
JH
2701 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2702 int code = 0;
2703 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) {
2704 /*
71200d45 2705 * write() the buffer
14a5cf38
JH
2706 */
2707 STDCHAR *buf = b->buf;
2708 STDCHAR *p = buf;
2709 PerlIO *n = PerlIONext(f);
2710 while (p < b->ptr) {
2711 SSize_t count = PerlIO_write(n, p, b->ptr - p);
2712 if (count > 0) {
2713 p += count;
2714 }
2715 else if (count < 0 || PerlIO_error(n)) {
2716 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2717 code = -1;
2718 break;
2719 }
2720 }
2721 b->posn += (p - buf);
2722 }
2723 else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) {
2724 STDCHAR *buf = PerlIO_get_base(f);
2725 /*
71200d45 2726 * Note position change
14a5cf38
JH
2727 */
2728 b->posn += (b->ptr - buf);
2729 if (b->ptr < b->end) {
2730 /*
71200d45 2731 * We did not consume all of it
14a5cf38
JH
2732 */
2733 if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) == 0) {
2734 b->posn = PerlIO_tell(PerlIONext(f));
2735 }
2736 }
2737 }
2738 b->ptr = b->end = b->buf;
2739 PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF);
2740 /*
71200d45 2741 * FIXME: Is this right for read case ?
14a5cf38
JH
2742 */
2743 if (PerlIO_flush(PerlIONext(f)) != 0)
2744 code = -1;
2745 return code;
6f9d8c32
NIS
2746}
2747
06da4f11
NIS
2748IV
2749PerlIOBuf_fill(PerlIO *f)
2750{
14a5cf38
JH
2751 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2752 PerlIO *n = PerlIONext(f);
2753 SSize_t avail;
2754 /*
2755 * FIXME: doing the down-stream flush is a bad idea if it causes
2756 * pre-read data in stdio buffer to be discarded but this is too
2757 * simplistic - as it skips _our_ hosekeeping and breaks tell tests.
71200d45 2758 * if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { }
14a5cf38
JH
2759 */
2760 if (PerlIO_flush(f) != 0)
2761 return -1;
2762 if (PerlIOBase(f)->flags & PERLIO_F_TTY)
2763 PerlIOBase_flush_linebuf();
2764
2765 if (!b->buf)
2766 PerlIO_get_base(f); /* allocate via vtable */
2767
2768 b->ptr = b->end = b->buf;
2769 if (PerlIO_fast_gets(n)) {
2770 /*
2771 * Layer below is also buffered We do _NOT_ want to call its
2772 * ->Read() because that will loop till it gets what we asked for
2773 * which may hang on a pipe etc. Instead take anything it has to
71200d45 2774 * hand, or ask it to fill _once_.
14a5cf38
JH
2775 */
2776 avail = PerlIO_get_cnt(n);
2777 if (avail <= 0) {
2778 avail = PerlIO_fill(n);
2779 if (avail == 0)
2780 avail = PerlIO_get_cnt(n);
2781 else {
2782 if (!PerlIO_error(n) && PerlIO_eof(n))
2783 avail = 0;
2784 }
2785 }
2786 if (avail > 0) {
2787 STDCHAR *ptr = PerlIO_get_ptr(n);
2788 SSize_t cnt = avail;
2789 if (avail > b->bufsiz)
2790 avail = b->bufsiz;
2791 Copy(ptr, b->buf, avail, STDCHAR);
2792 PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail);
2793 }
2794 }
2795 else {
2796 avail = PerlIO_read(n, b->ptr, b->bufsiz);
2797 }
2798 if (avail <= 0) {
2799 if (avail == 0)
2800 PerlIOBase(f)->flags |= PERLIO_F_EOF;
2801 else
2802 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2803 return -1;
2804 }
2805 b->end = b->buf + avail;
2806 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
2807 return 0;
06da4f11
NIS
2808}
2809
6f9d8c32 2810SSize_t
9e353e3b 2811PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count)
6f9d8c32 2812{
14a5cf38
JH
2813 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2814 if (f) {
2815 if (!b->ptr)
2816 PerlIO_get_base(f);
2817 return PerlIOBase_read(f, vbuf, count);
2818 }
2819 return 0;
6f9d8c32
NIS
2820}
2821
9e353e3b
NIS
2822SSize_t
2823PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count)
760ac839 2824{
14a5cf38
JH
2825 const STDCHAR *buf = (const STDCHAR *) vbuf + count;
2826 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2827 SSize_t unread = 0;
2828 SSize_t avail;
2829 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
2830 PerlIO_flush(f);
2831 if (!b->buf)
2832 PerlIO_get_base(f);
2833 if (b->buf) {
2834 if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) {
2835 /*
2836 * Buffer is already a read buffer, we can overwrite any chars
71200d45 2837 * which have been read back to buffer start
14a5cf38
JH
2838 */
2839 avail = (b->ptr - b->buf);
2840 }
2841 else {
2842 /*
2843 * Buffer is idle, set it up so whole buffer is available for
71200d45 2844 * unread
14a5cf38
JH
2845 */
2846 avail = b->bufsiz;
2847 b->end = b->buf + avail;
2848 b->ptr = b->end;
2849 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
2850 /*
71200d45 2851 * Buffer extends _back_ from where we are now
14a5cf38
JH
2852 */
2853 b->posn -= b->bufsiz;
2854 }
2855 if (avail > (SSize_t) count) {
2856 /*
71200d45 2857 * If we have space for more than count, just move count
14a5cf38
JH
2858 */
2859 avail = count;
2860 }
2861 if (avail > 0) {
2862 b->ptr -= avail;
2863 buf -= avail;
2864 /*
2865 * In simple stdio-like ungetc() case chars will be already
71200d45 2866 * there
14a5cf38
JH
2867 */
2868 if (buf != b->ptr) {
2869 Copy(buf, b->ptr, avail, STDCHAR);
2870 }
2871 count -= avail;
2872 unread += avail;
2873 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
2874 }
2875 }
2876 return unread;
760ac839
LW
2877}
2878
9e353e3b
NIS
2879SSize_t
2880PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count)
760ac839 2881{
14a5cf38
JH
2882 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2883 const STDCHAR *buf = (const STDCHAR *) vbuf;
2884 Size_t written = 0;
2885 if (!b->buf)
2886 PerlIO_get_base(f);
2887 if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE))
2888 return 0;
2889 while (count > 0) {
2890 SSize_t avail = b->bufsiz - (b->ptr - b->buf);
2891 if ((SSize_t) count < avail)
2892 avail = count;
2893 PerlIOBase(f)->flags |= PERLIO_F_WRBUF;
2894 if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) {
2895 while (avail > 0) {
2896 int ch = *buf++;
2897 *(b->ptr)++ = ch;
2898 count--;
2899 avail--;
2900 written++;
2901 if (ch == '\n') {
2902 PerlIO_flush(f);
2903 break;
2904 }
2905 }
2906 }
2907 else {
2908 if (avail) {
2909 Copy(buf, b->ptr, avail, STDCHAR);
2910 count -= avail;
2911 buf += avail;
2912 written += avail;
2913 b->ptr += avail;
2914 }
2915 }
2916 if (b->ptr >= (b->buf + b->bufsiz))
2917 PerlIO_flush(f);
2918 }
2919 if (PerlIOBase(f)->flags & PERLIO_F_UNBUF)
2920 PerlIO_flush(f);
2921 return written;
9e353e3b
NIS
2922}
2923
2924IV
2925PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence)
2926{
14a5cf38
JH
2927 IV code;
2928 if ((code = PerlIO_flush(f)) == 0) {
2929 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2930 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
2931 code = PerlIO_seek(PerlIONext(f), offset, whence);
2932 if (code == 0) {
2933 b->posn = PerlIO_tell(PerlIONext(f));
2934 }
9e353e3b 2935 }
14a5cf38 2936 return code;
9e353e3b
NIS
2937}
2938
2939Off_t
2940PerlIOBuf_tell(PerlIO *f)
2941{
14a5cf38
JH
2942 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2943 /*
71200d45 2944 * b->posn is file position where b->buf was read, or will be written
14a5cf38
JH
2945 */
2946 Off_t posn = b->posn;
2947 if (b->buf) {
2948 /*
71200d45 2949 * If buffer is valid adjust position by amount in buffer
14a5cf38
JH
2950 */
2951 posn += (b->ptr - b->buf);
2952 }
2953 return posn;
9e353e3b
NIS
2954}
2955
2956IV
2957PerlIOBuf_close(PerlIO *f)
2958{
14a5cf38
JH
2959 IV code = PerlIOBase_close(f);
2960 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2961 if (b->buf && b->buf != (STDCHAR *) & b->oneword) {
2962 PerlMemShared_free(b->buf);
2963 }
2964 b->buf = NULL;
2965 b->ptr = b->end = b->buf;
2966 PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF);
2967 return code;
760ac839
LW
2968}
2969
9e353e3b
NIS
2970STDCHAR *
2971PerlIOBuf_get_ptr(PerlIO *f)
2972{
14a5cf38
JH
2973 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2974 if (!b->buf)
2975 PerlIO_get_base(f);
2976 return b->ptr;
9e353e3b
NIS
2977}
2978
05d1247b 2979SSize_t
9e353e3b
NIS
2980PerlIOBuf_get_cnt(PerlIO *f)
2981{
14a5cf38
JH
2982 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2983 if (!b->buf)
2984 PerlIO_get_base(f);
2985 if (PerlIOBase(f)->flags & PERLIO_F_RDBUF)
2986 return (b->end - b->ptr);
2987 return 0;
9e353e3b
NIS
2988}
2989
2990STDCHAR *
2991PerlIOBuf_get_base(PerlIO *f)
2992{
14a5cf38
JH
2993 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2994 if (!b->buf) {
2995 if (!b->bufsiz)
2996 b->bufsiz = 4096;
2997 b->buf = PerlMemShared_calloc(b->bufsiz, sizeof(STDCHAR));
2998 if (!b->buf) {
2999 b->buf = (STDCHAR *) & b->oneword;
3000 b->bufsiz = sizeof(b->oneword);
3001 }
3002 b->ptr = b->buf;
3003 b->end = b->ptr;
06da4f11 3004 }
14a5cf38 3005 return b->buf;
9e353e3b
NIS
3006}
3007
3008Size_t
3009PerlIOBuf_bufsiz(PerlIO *f)
3010{
14a5cf38
JH
3011 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3012 if (!b->buf)
3013 PerlIO_get_base(f);
3014 return (b->end - b->buf);
9e353e3b
NIS
3015}
3016
3017void
14a5cf38 3018PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR * ptr, SSize_t cnt)
9e353e3b 3019{
14a5cf38
JH
3020 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3021 if (!b->buf)
3022 PerlIO_get_base(f);
3023 b->ptr = ptr;
3024 if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) {
3025 dTHX;
3026 assert(PerlIO_get_cnt(f) == cnt);
3027 assert(b->ptr >= b->buf);
3028 }
3029 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
760ac839
LW
3030}
3031
71200d45 3032PerlIO *
8cf8f3d1 3033PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
71200d45 3034{
a8fc9800 3035 return PerlIOBase_dup(aTHX_ f, o, param);
71200d45
NIS
3036}
3037
3038
3039
9e353e3b 3040PerlIO_funcs PerlIO_perlio = {
14a5cf38
JH
3041 "perlio",
3042 sizeof(PerlIOBuf),
3043 PERLIO_K_BUFFERED,
3044 PerlIOBuf_pushed,
3045 PerlIOBase_noop_ok,
3046 PerlIOBuf_open,
3047 NULL,
3048 PerlIOBase_fileno,
71200d45 3049 PerlIOBuf_dup,
14a5cf38
JH
3050 PerlIOBuf_read,
3051 PerlIOBuf_unread,
3052 PerlIOBuf_write,
3053 PerlIOBuf_seek,
3054 PerlIOBuf_tell,
3055 PerlIOBuf_close,
3056 PerlIOBuf_flush,
3057 PerlIOBuf_fill,
3058 PerlIOBase_eof,
3059 PerlIOBase_error,
3060 PerlIOBase_clearerr,
3061 PerlIOBase_setlinebuf,
3062 PerlIOBuf_get_base,
3063 PerlIOBuf_bufsiz,
3064 PerlIOBuf_get_ptr,
3065 PerlIOBuf_get_cnt,
3066 PerlIOBuf_set_ptrcnt,
9e353e3b
NIS
3067};
3068
66ecd56b 3069/*--------------------------------------------------------------------------------------*/
14a5cf38 3070/*
71200d45 3071 * Temp layer to hold unread chars when cannot do it any other way
14a5cf38 3072 */
5e2ab84b
NIS
3073
3074IV
3075PerlIOPending_fill(PerlIO *f)
3076{
14a5cf38 3077 /*
71200d45 3078 * Should never happen
14a5cf38
JH
3079 */
3080 PerlIO_flush(f);
3081 return 0;
5e2ab84b
NIS
3082}
3083
3084IV
3085PerlIOPending_close(PerlIO *f)
3086{
14a5cf38 3087 /*
71200d45 3088 * A tad tricky - flush pops us, then we close new top
14a5cf38
JH
3089 */
3090 PerlIO_flush(f);
3091 return PerlIO_close(f);
5e2ab84b
NIS
3092}
3093
3094IV
3095PerlIOPending_seek(PerlIO *f, Off_t offset, int whence)
3096{
14a5cf38 3097 /*
71200d45 3098 * A tad tricky - flush pops us, then we seek new top
14a5cf38
JH
3099 */
3100 PerlIO_flush(f);
3101 return PerlIO_seek(f, offset, whence);
5e2ab84b
NIS
3102}
3103
3104
3105IV
3106PerlIOPending_flush(PerlIO *f)
3107{
14a5cf38
JH
3108 dTHX;
3109 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3110 if (b->buf && b->buf != (STDCHAR *) & b->oneword) {
3111 PerlMemShared_free(b->buf);
3112 b->buf = NULL;
3113 }
3114 PerlIO_pop(aTHX_ f);
3115 return 0;
5e2ab84b
NIS
3116}
3117
3118void
14a5cf38 3119PerlIOPending_set_ptrcnt(PerlIO *f, STDCHAR * ptr, SSize_t cnt)
5e2ab84b 3120{
14a5cf38
JH
3121 if (cnt <= 0) {
3122 PerlIO_flush(f);
3123 }
3124 else {
3125 PerlIOBuf_set_ptrcnt(f, ptr, cnt);
3126 }
5e2ab84b
NIS
3127}
3128
3129IV
14a5cf38 3130PerlIOPending_pushed(PerlIO *f, const char *mode, SV *arg)
5e2ab84b 3131{
14a5cf38
JH
3132 IV code = PerlIOBase_pushed(f, mode, arg);
3133 PerlIOl *l = PerlIOBase(f);
3134 /*
71200d45
NIS
3135 * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets()
3136 * etc. get muddled when it changes mid-string when we auto-pop.
14a5cf38
JH
3137 */
3138 l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) |
3139 (PerlIOBase(PerlIONext(f))->
3140 flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8));
3141 return code;
5e2ab84b
NIS
3142}
3143
3144SSize_t
3145PerlIOPending_read(PerlIO *f, void *vbuf, Size_t count)
3146{
14a5cf38
JH
3147 SSize_t avail = PerlIO_get_cnt(f);
3148 SSize_t got = 0;
3149 if (count < avail)
3150 avail = count;
3151 if (avail > 0)
3152 got = PerlIOBuf_read(f, vbuf, avail);
3153 if (got >= 0 && got < count) {
3154 SSize_t more =
3155 PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got);
3156 if (more >= 0 || got == 0)
3157 got += more;
3158 }
3159 return got;
5e2ab84b
NIS
3160}
3161
5e2ab84b 3162PerlIO_funcs PerlIO_pending = {
14a5cf38
JH
3163 "pending",
3164 sizeof(PerlIOBuf),
3165 PERLIO_K_BUFFERED,
3166 PerlIOPending_pushed,
3167 PerlIOBase_noop_ok,
3168 NULL,
3169 NULL,
3170 PerlIOBase_fileno,
71200d45 3171 PerlIOBuf_dup,
14a5cf38
JH
3172 PerlIOPending_read,
3173 PerlIOBuf_unread,
3174 PerlIOBuf_write,
3175 PerlIOPending_seek,
3176 PerlIOBuf_tell,
3177 PerlIOPending_close,
3178 PerlIOPending_flush,
3179 PerlIOPending_fill,
3180 PerlIOBase_eof,
3181 PerlIOBase_error,
3182 PerlIOBase_clearerr,
3183 PerlIOBase_setlinebuf,
3184 PerlIOBuf_get_base,
3185 PerlIOBuf_bufsiz,
3186 PerlIOBuf_get_ptr,
3187 PerlIOBuf_get_cnt,
3188 PerlIOPending_set_ptrcnt,
5e2ab84b
NIS
3189};
3190
3191
3192
3193/*--------------------------------------------------------------------------------------*/
14a5cf38
JH
3194/*
3195 * crlf - translation On read translate CR,LF to "\n" we do this by
3196 * overriding ptr/cnt entries to hand back a line at a time and keeping a
71200d45 3197 * record of which nl we "lied" about. On write translate "\n" to CR,LF
66ecd56b
NIS
3198 */
3199
14a5cf38
JH
3200typedef struct {
3201 PerlIOBuf base; /* PerlIOBuf stuff */
71200d45 3202 STDCHAR *nl; /* Position of crlf we "lied" about in the
14a5cf38 3203 * buffer */
99efab12
NIS
3204} PerlIOCrlf;
3205
f5b9d040 3206IV
14a5cf38 3207PerlIOCrlf_pushed(PerlIO *f, const char *mode, SV *arg)
f5b9d040 3208{
14a5cf38
JH
3209 IV code;
3210 PerlIOBase(f)->flags |= PERLIO_F_CRLF;
3211 code = PerlIOBuf_pushed(f, mode, arg);
5e2ab84b 3212#if 0
14a5cf38
JH
3213 PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n",
3214 f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)",
3215 PerlIOBase(f)->flags);
5e2ab84b 3216#endif
14a5cf38 3217 return code;
f5b9d040
NIS
3218}
3219
3220
99efab12
NIS
3221SSize_t
3222PerlIOCrlf_unread(PerlIO *f, const void *vbuf, Size_t count)
3223{
14a5cf38
JH
3224 PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf);
3225 if (c->nl) {
3226 *(c->nl) = 0xd;
3227 c->nl = NULL;
3228 }
3229 if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF))
3230 return PerlIOBuf_unread(f, vbuf, count);
3231 else {
3232 const STDCHAR *buf = (const STDCHAR *) vbuf + count;
3233 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3234 SSize_t unread = 0;
3235 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
3236 PerlIO_flush(f);
3237 if (!b->buf)
3238 PerlIO_get_base(f);
3239 if (b->buf) {
3240 if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) {
3241 b->end = b->ptr = b->buf + b->bufsiz;
3242 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
3243 b->posn -= b->bufsiz;
3244 }
3245 while (count > 0 && b->ptr > b->buf) {
3246 int ch = *--buf;
3247 if (ch == '\n') {
3248 if (b->ptr - 2 >= b->buf) {
3249 *--(b->ptr) = 0xa;
3250 *--(b->ptr) = 0xd;
3251 unread++;
3252 count--;
3253 }
3254 else {
3255 buf++;
3256 break;
3257 }
3258 }
3259 else {
3260 *--(b->ptr) = ch;
3261 unread++;
3262 count--;
3263 }
3264 }
3265 }
3266 return unread;
3267 }
99efab12
NIS
3268}
3269
3270SSize_t
3271PerlIOCrlf_get_cnt(PerlIO *f)
3272{
14a5cf38
JH
3273 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3274 if (!b->buf)
3275 PerlIO_get_base(f);
3276 if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) {
3277 PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf);
3278 if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && !c->nl) {
3279 STDCHAR *nl = b->ptr;
3280 scan:
3281 while (nl < b->end && *nl != 0xd)
3282 nl++;
3283 if (nl < b->end && *nl == 0xd) {
3284 test:
3285 if (nl + 1 < b->end) {
3286 if (nl[1] == 0xa) {
3287 *nl = '\n';
3288 c->nl = nl;
3289 }
3290 else {
3291 /*
71200d45 3292 * Not CR,LF but just CR
14a5cf38
JH
3293 */
3294 nl++;
3295 goto scan;
3296 }
3297 }
3298 else {
3299 /*
71200d45 3300 * Blast - found CR as last char in buffer
14a5cf38
JH
3301 */
3302 if (b->ptr < nl) {
3303 /*
3304 * They may not care, defer work as long as
71200d45 3305 * possible
14a5cf38
JH
3306 */
3307 return (nl - b->ptr);
3308 }
3309 else {
3310 int code;
3311 b->ptr++; /* say we have read it as far as
3312 * flush() is concerned */
3313 b->buf++; /* Leave space an front of buffer */
3314 b->bufsiz--; /* Buffer is thus smaller */
3315 code = PerlIO_fill(f); /* Fetch some more */
3316 b->bufsiz++; /* Restore size for next time */
3317 b->buf--; /* Point at space */
3318 b->ptr = nl = b->buf; /* Which is what we hand
3319 * off */
3320 b->posn--; /* Buffer starts here */
3321 *nl = 0xd; /* Fill in the CR */
3322 if (code == 0)
3323 goto test; /* fill() call worked */
3324 /*
71200d45 3325 * CR at EOF - just fall through
14a5cf38
JH
3326 */
3327 }
3328 }
3329 }
3330 }
3331 return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr);
3332 }
3333 return 0;
99efab12
NIS
3334}
3335
3336void
14a5cf38
JH
3337PerlIOCrlf_set_ptrcnt(PerlIO *f, STDCHAR * ptr, SSize_t cnt)
3338{
3339 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3340 PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf);
3341 IV flags = PerlIOBase(f)->flags;
3342 if (!b->buf)
3343 PerlIO_get_base(f);
3344 if (!ptr) {
3345 if (c->nl)
3346 ptr = c->nl + 1;
3347 else {
3348 ptr = b->end;
3349 if ((flags & PERLIO_F_CRLF) && ptr > b->buf && ptr[-1] == 0xd)
3350 ptr--;
3351 }
3352 ptr -= cnt;
3353 }
3354 else {
3355 /*
71200d45 3356 * Test code - delete when it works ...
14a5cf38
JH
3357 */
3358 STDCHAR *chk;
3359 if (c->nl)
3360 chk = c->nl + 1;
3361 else {
3362 chk = b->end;
3363 if ((flags & PERLIO_F_CRLF) && chk > b->buf && chk[-1] == 0xd)
3364 chk--;
3365 }
3366 chk -= cnt;
3367
3368 if (ptr != chk) {
3369 dTHX;
3370 Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf
3371 " nl=%p e=%p for %d", ptr, chk, flags, c->nl,
3372 b->end, cnt);
3373 }
3374 }
3375 if (c->nl) {
3376 if (ptr > c->nl) {
3377 /*
71200d45 3378 * They have taken what we lied about
14a5cf38
JH
3379 */
3380 *(c->nl) = 0xd;
3381 c->nl = NULL;
3382 ptr++;
3383 }
3384 }
3385 b->ptr = ptr;
3386 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
99efab12
NIS
3387}
3388
3389SSize_t
3390PerlIOCrlf_write(PerlIO *f, const void *vbuf, Size_t count)
3391{
14a5cf38
JH
3392 if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF))
3393 return PerlIOBuf_write(f, vbuf, count);
3394 else {
3395 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3396 const STDCHAR *buf = (const STDCHAR *) vbuf;
3397 const STDCHAR *ebuf = buf + count;
3398 if (!b->buf)
3399 PerlIO_get_base(f);
3400 if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE))
3401 return 0;
3402 while (buf < ebuf) {
3403 STDCHAR *eptr = b->buf + b->bufsiz;
3404 PerlIOBase(f)->flags |= PERLIO_F_WRBUF;
3405 while (buf < ebuf && b->ptr < eptr) {
3406 if (*buf == '\n') {
3407 if ((b->ptr + 2) > eptr) {
3408 /*
71200d45 3409 * Not room for both
14a5cf38
JH
3410 */
3411 PerlIO_flush(f);
3412 break;
3413 }
3414 else {
3415 *(b->ptr)++ = 0xd; /* CR */
3416 *(b->ptr)++ = 0xa; /* LF */
3417 buf++;
3418 if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) {
3419 PerlIO_flush(f);
3420 break;
3421 }
3422 }
3423 }
3424 else {
3425 int ch = *buf++;
3426 *(b->ptr)++ = ch;
3427 }
3428 if (b->ptr >= eptr) {
3429 PerlIO_flush(f);
3430 break;
3431 }
3432 }
3433 }
3434 if (PerlIOBase(f)->flags & PERLIO_F_UNBUF)
3435 PerlIO_flush(f);
3436 return (buf - (STDCHAR *) vbuf);
3437 }
99efab12
NIS
3438}
3439
3440IV
3441PerlIOCrlf_flush(PerlIO *f)
3442{
14a5cf38
JH
3443 PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf);
3444 if (c->nl) {
3445 *(c->nl) = 0xd;
3446 c->nl = NULL;
3447 }
3448 return PerlIOBuf_flush(f);
99efab12
NIS
3449}
3450
66ecd56b 3451PerlIO_funcs PerlIO_crlf = {
14a5cf38
JH
3452 "crlf",
3453 sizeof(PerlIOCrlf),
3454 PERLIO_K_BUFFERED | PERLIO_K_CANCRLF,
3455 PerlIOCrlf_pushed,
3456 PerlIOBase_noop_ok, /* popped */
3457 PerlIOBuf_open,
3458 NULL,
3459 PerlIOBase_fileno,
71200d45 3460 PerlIOBuf_dup,
14a5cf38
JH
3461 PerlIOBuf_read, /* generic read works with ptr/cnt lies
3462 * ... */
3463 PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */
3464 PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */
3465 PerlIOBuf_seek,
3466 PerlIOBuf_tell,
3467 PerlIOBuf_close,
3468 PerlIOCrlf_flush,
3469 PerlIOBuf_fill,
3470 PerlIOBase_eof,
3471 PerlIOBase_error,
3472 PerlIOBase_clearerr,
3473 PerlIOBase_setlinebuf,
3474 PerlIOBuf_get_base,
3475 PerlIOBuf_bufsiz,
3476 PerlIOBuf_get_ptr,
3477 PerlIOCrlf_get_cnt,
3478 PerlIOCrlf_set_ptrcnt,
66ecd56b
NIS
3479};
3480
06da4f11
NIS
3481#ifdef HAS_MMAP
3482/*--------------------------------------------------------------------------------------*/
14a5cf38 3483/*
71200d45 3484 * mmap as "buffer" layer
14a5cf38 3485 */
06da4f11 3486
14a5cf38
JH
3487typedef struct {
3488 PerlIOBuf base; /* PerlIOBuf stuff */
3489 Mmap_t mptr; /* Mapped address */
3490 Size_t len; /* mapped length */
3491 STDCHAR *bbuf; /* malloced buffer if map fails */
06da4f11
NIS
3492} PerlIOMmap;
3493
c3d7c7c9
NIS
3494static size_t page_size = 0;
3495
06da4f11
NIS
3496IV
3497PerlIOMmap_map(PerlIO *f)
3498{
14a5cf38
JH
3499 dTHX;
3500 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3501 IV flags = PerlIOBase(f)->flags;
3502 IV code = 0;
3503 if (m->len)
3504 abort();
3505 if (flags & PERLIO_F_CANREAD) {
3506 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3507 int fd = PerlIO_fileno(f);
3508 struct stat st;
3509 code = fstat(fd, &st);
3510 if (code == 0 && S_ISREG(st.st_mode)) {
3511 SSize_t len = st.st_size - b->posn;
3512 if (len > 0) {
3513 Off_t posn;
3514 if (!page_size) {
68d873c6 3515#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE))
14a5cf38
JH
3516 {
3517 SETERRNO(0, SS$_NORMAL);
68d873c6 3518# ifdef _SC_PAGESIZE
14a5cf38 3519 page_size = sysconf(_SC_PAGESIZE);
68d873c6 3520# else
14a5cf38 3521 page_size = sysconf(_SC_PAGE_SIZE);
14aaf8e8 3522# endif
14a5cf38
JH
3523 if ((long) page_size < 0) {
3524 if (errno) {
3525 SV *error = ERRSV;
3526 char *msg;
3527 STRLEN n_a;
3528 (void) SvUPGRADE(error, SVt_PV);
3529 msg = SvPVx(error, n_a);
3530 Perl_croak(aTHX_ "panic: sysconf: %s",
3531 msg);
3532 }
3533 else
3534 Perl_croak(aTHX_
3535 "panic: sysconf: pagesize unknown");
3536 }
3537 }
68d873c6
JH
3538#else
3539# ifdef HAS_GETPAGESIZE
14a5cf38 3540 page_size = getpagesize();
68d873c6
JH
3541# else
3542# if defined(I_SYS_PARAM) && defined(PAGESIZE)
14a5cf38 3543 page_size = PAGESIZE; /* compiletime, bad */
68d873c6
JH
3544# endif
3545# endif
3546#endif
14a5cf38
JH
3547 if ((IV) page_size <= 0)
3548 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
3549 (IV) page_size);
3550 }
3551 if (b->posn < 0) {
3552 /*
3553 * This is a hack - should never happen - open should
71200d45 3554 * have set it !
14a5cf38
JH
3555 */
3556 b->posn = PerlIO_tell(PerlIONext(f));
3557 }
3558 posn = (b->posn / page_size) * page_size;
3559 len = st.st_size - posn;
3560 m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn);
3561 if (m->mptr && m->mptr != (Mmap_t) - 1) {
a5262162 3562#if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL)
14a5cf38 3563 madvise(m->mptr, len, MADV_SEQUENTIAL);
06da4f11 3564#endif
a5262162 3565#if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED)
14a5cf38 3566 madvise(m->mptr, len, MADV_WILLNEED);
a5262162 3567#endif
14a5cf38
JH
3568 PerlIOBase(f)->flags =
3569 (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF;
3570 b->end = ((STDCHAR *) m->mptr) + len;
3571 b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn);
3572 b->ptr = b->buf;
3573 m->len = len;
3574 }
3575 else {
3576 b->buf = NULL;
3577 }
3578 }
3579 else {
3580 PerlIOBase(f)->flags =
3581 flags | PERLIO_F_EOF | PERLIO_F_RDBUF;
3582 b->buf = NULL;
3583 b->ptr = b->end = b->ptr;
3584 code = -1;
3585 }
3586 }
3587 }
3588 return code;
06da4f11
NIS
3589}
3590
3591IV
3592PerlIOMmap_unmap(PerlIO *f)
3593{
14a5cf38
JH
3594 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3595 PerlIOBuf *b = &m->base;
3596 IV code = 0;
3597 if (m->len) {
3598 if (b->buf) {
3599 code = munmap(m->mptr, m->len);
3600 b->buf = NULL;
3601 m->len = 0;
3602 m->mptr = NULL;
3603 if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0)
3604 code = -1;
3605 }
3606 b->ptr = b->end = b->buf;
3607 PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF);
3608 }
3609 return code;
06da4f11
NIS
3610}
3611
3612STDCHAR *
3613PerlIOMmap_get_base(PerlIO *f)
3614{
14a5cf38
JH
3615 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3616 PerlIOBuf *b = &m->base;
3617 if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) {
3618 /*
71200d45 3619 * Already have a readbuffer in progress
14a5cf38
JH
3620 */
3621 return b->buf;
3622 }
3623 if (b->buf) {
3624 /*
71200d45 3625 * We have a write buffer or flushed PerlIOBuf read buffer
14a5cf38
JH
3626 */
3627 m->bbuf = b->buf; /* save it in case we need it again */
3628 b->buf = NULL; /* Clear to trigger below */
3629 }
3630 if (!b->buf) {
3631 PerlIOMmap_map(f); /* Try and map it */
3632 if (!b->buf) {
3633 /*
71200d45 3634 * Map did not work - recover PerlIOBuf buffer if we have one
14a5cf38
JH
3635 */
3636 b->buf = m->bbuf;
3637 }
3638 }
3639 b->ptr = b->end = b->buf;
3640 if (b->buf)
3641 return b->buf;
3642 return PerlIOBuf_get_base(f);
06da4f11
NIS
3643}
3644
3645SSize_t
3646PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count)
3647{
14a5cf38
JH
3648 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3649 PerlIOBuf *b = &m->base;
3650 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
3651 PerlIO_flush(f);
3652 if (b->ptr && (b->ptr - count) >= b->buf
3653 && memEQ(b->ptr - count, vbuf, count)) {
3654 b->ptr -= count;
3655 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
3656 return count;
3657 }
3658 if (m->len) {
3659 /*
71200d45 3660 * Loose the unwritable mapped buffer
14a5cf38
JH
3661 */
3662 PerlIO_flush(f);
3663 /*
71200d45 3664 * If flush took the "buffer" see if we have one from before
14a5cf38
JH
3665 */
3666 if (!b->buf && m->bbuf)
3667 b->buf = m->bbuf;
3668 if (!b->buf) {
3669 PerlIOBuf_get_base(f);
3670 m->bbuf = b->buf;
3671 }
3672 }
3673 return PerlIOBuf_unread(f, vbuf, count);
06da4f11
NIS
3674}
3675
3676SSize_t
3677PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count)
3678{
14a5cf38
JH
3679 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3680 PerlIOBuf *b = &m->base;
3681 if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) {
3682 /*
71200d45 3683 * No, or wrong sort of, buffer
14a5cf38
JH
3684 */
3685 if (m->len) {
3686 if (PerlIOMmap_unmap(f) != 0)
3687 return 0;
3688 }
3689 /*
71200d45 3690 * If unmap took the "buffer" see if we have one from before
14a5cf38
JH
3691 */
3692 if (!b->buf && m->bbuf)
3693 b->buf = m->bbuf;
3694 if (!b->buf) {
3695 PerlIOBuf_get_base(f);
3696 m->bbuf = b->buf;
3697 }
06da4f11 3698 }
14a5cf38 3699 return PerlIOBuf_write(f, vbuf, count);
06da4f11
NIS
3700}
3701
3702IV
3703PerlIOMmap_flush(PerlIO *f)
3704{
14a5cf38
JH
3705 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3706 PerlIOBuf *b = &m->base;
3707 IV code = PerlIOBuf_flush(f);
3708 /*
71200d45 3709 * Now we are "synced" at PerlIOBuf level
14a5cf38
JH
3710 */
3711 if (b->buf) {
3712 if (m->len) {
3713 /*
71200d45 3714 * Unmap the buffer
14a5cf38
JH
3715 */
3716 if (PerlIOMmap_unmap(f) != 0)
3717 code = -1;
3718 }
3719 else {
3720 /*
3721 * We seem to have a PerlIOBuf buffer which was not mapped
71200d45 3722 * remember it in case we need one later
14a5cf38
JH
3723 */
3724 m->bbuf = b->buf;
3725 }
3726 }
3727 return code;
06da4f11
NIS
3728}
3729
3730IV
3731PerlIOMmap_fill(PerlIO *f)
3732{
14a5cf38
JH
3733 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3734 IV code = PerlIO_flush(f);
3735 if (code == 0 && !b->buf) {
3736 code = PerlIOMmap_map(f);
3737 }
3738 if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) {
3739 code = PerlIOBuf_fill(f);
3740 }
3741 return code;
06da4f11
NIS
3742}
3743
3744IV
3745PerlIOMmap_close(PerlIO *f)
3746{
14a5cf38
JH
3747 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3748 PerlIOBuf *b = &m->base;
3749 IV code = PerlIO_flush(f);
3750 if (m->bbuf) {
3751 b->buf = m->bbuf;
3752 m->bbuf = NULL;
3753 b->ptr = b->end = b->buf;
3754 }
3755 if (PerlIOBuf_close(f) != 0)
3756 code = -1;
3757 return code;
06da4f11
NIS
3758}
3759
71200d45 3760PerlIO *
8cf8f3d1 3761PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
71200d45 3762{
a8fc9800 3763 return PerlIOBase_dup(aTHX_ f, o, param);
71200d45
NIS
3764}
3765
06da4f11
NIS
3766
3767PerlIO_funcs PerlIO_mmap = {
14a5cf38
JH
3768 "mmap",
3769 sizeof(PerlIOMmap),
3770 PERLIO_K_BUFFERED,
3771 PerlIOBuf_pushed,
3772 PerlIOBase_noop_ok,
3773 PerlIOBuf_open,
3774 NULL,
3775 PerlIOBase_fileno,
71200d45 3776 PerlIOMmap_dup,
14a5cf38
JH
3777 PerlIOBuf_read,
3778 PerlIOMmap_unread,
3779 PerlIOMmap_write,
3780 PerlIOBuf_seek,
3781 PerlIOBuf_tell,
3782 PerlIOBuf_close,
3783 PerlIOMmap_flush,
3784 PerlIOMmap_fill,
3785 PerlIOBase_eof,
3786 PerlIOBase_error,
3787 PerlIOBase_clearerr,
3788 PerlIOBase_setlinebuf,
3789 PerlIOMmap_get_base,
3790 PerlIOBuf_bufsiz,
3791 PerlIOBuf_get_ptr,
3792 PerlIOBuf_get_cnt,
3793 PerlIOBuf_set_ptrcnt,
06da4f11
NIS
3794};
3795
14a5cf38 3796#endif /* HAS_MMAP */
06da4f11 3797
9e353e3b
NIS
3798void
3799PerlIO_init(void)
760ac839 3800{
14a5cf38 3801 dTHX;
43c11ae3 3802#ifndef WIN32
14a5cf38 3803 call_atexit(PerlIO_cleanup_layers, NULL);
43c11ae3 3804#endif
14a5cf38 3805 if (!_perlio) {
be696b0a 3806#ifndef WIN32
14a5cf38 3807 atexit(&PerlIO_cleanup);
be696b0a 3808#endif
14a5cf38 3809 }
760ac839
LW
3810}
3811
9e353e3b
NIS
3812#undef PerlIO_stdin
3813PerlIO *
3814PerlIO_stdin(void)
3815{
14a5cf38
JH
3816 if (!_perlio) {
3817 dTHX;
3818 PerlIO_stdstreams(aTHX);
3819 }
3820 return &_perlio[1];
9e353e3b
NIS
3821}
3822
3823#undef PerlIO_stdout
3824PerlIO *
3825PerlIO_stdout(void)
3826{
14a5cf38
JH
3827 if (!_perlio) {
3828 dTHX;
3829 PerlIO_stdstreams(aTHX);
3830 }
3831 return &_perlio[2];
9e353e3b
NIS
3832}
3833
3834#undef PerlIO_stderr
3835PerlIO *
3836PerlIO_stderr(void)
3837{
14a5cf38
JH
3838 if (!_perlio) {
3839 dTHX;
3840 PerlIO_stdstreams(aTHX);
3841 }
3842 return &_perlio[3];
9e353e3b
NIS
3843}
3844
3845/*--------------------------------------------------------------------------------------*/
3846
3847#undef PerlIO_getname
3848char *
3849PerlIO_getname(PerlIO *f, char *buf)
3850{
14a5cf38
JH
3851 dTHX;
3852 char *name = NULL;
a15cef0c 3853#ifdef VMS
14a5cf38
JH
3854 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
3855 if (stdio)
3856 name = fgetname(stdio, buf);
a15cef0c 3857#else
14a5cf38 3858 Perl_croak(aTHX_ "Don't know how to get file name");
a15cef0c 3859#endif
14a5cf38 3860 return name;
9e353e3b
NIS
3861}
3862
3863
3864/*--------------------------------------------------------------------------------------*/
14a5cf38
JH
3865/*
3866 * Functions which can be called on any kind of PerlIO implemented in
71200d45 3867 * terms of above
14a5cf38 3868 */
9e353e3b
NIS
3869
3870#undef PerlIO_getc
6f9d8c32 3871int
9e353e3b 3872PerlIO_getc(PerlIO *f)
760ac839 3873{
14a5cf38
JH
3874 STDCHAR buf[1];
3875 SSize_t count = PerlIO_read(f, buf, 1);
3876 if (count == 1) {
3877 return (unsigned char) buf[0];
3878 }
3879 return EOF;
313ca112
NIS
3880}
3881
3882#undef PerlIO_ungetc
3883int
3884PerlIO_ungetc(PerlIO *f, int ch)
3885{
14a5cf38
JH
3886 if (ch != EOF) {
3887 STDCHAR buf = ch;
3888 if (PerlIO_unread(f, &buf, 1) == 1)
3889 return ch;
3890 }
3891 return EOF;
760ac839
LW
3892}
3893
9e353e3b
NIS
3894#undef PerlIO_putc
3895int
3896PerlIO_putc(PerlIO *f, int ch)
760ac839 3897{
14a5cf38
JH
3898 STDCHAR buf = ch;
3899 return PerlIO_write(f, &buf, 1);
760ac839
LW
3900}
3901
9e353e3b 3902#undef PerlIO_puts
760ac839 3903int
9e353e3b 3904PerlIO_puts(PerlIO *f, const char *s)
760ac839 3905{
14a5cf38
JH
3906 STRLEN len = strlen(s);
3907 return PerlIO_write(f, s, len);
760ac839
LW
3908}
3909
3910#undef PerlIO_rewind
3911void
c78749f2 3912PerlIO_rewind(PerlIO *f)
760ac839 3913{
14a5cf38
JH
3914 PerlIO_seek(f, (Off_t) 0, SEEK_SET);
3915 PerlIO_clearerr(f);
6f9d8c32
NIS
3916}
3917
3918#undef PerlIO_vprintf
3919int
3920PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap)
3921{
14a5cf38
JH
3922 dTHX;
3923 SV *sv = newSVpvn("", 0);
3924 char *s;
3925 STRLEN len;
3926 SSize_t wrote;
2cc61e15 3927#ifdef NEED_VA_COPY
14a5cf38
JH
3928 va_list apc;
3929 Perl_va_copy(ap, apc);
3930 sv_vcatpvf(sv, fmt, &apc);
2cc61e15 3931#else
14a5cf38 3932 sv_vcatpvf(sv, fmt, &ap);
2cc61e15 3933#endif
14a5cf38
JH
3934 s = SvPV(sv, len);
3935 wrote = PerlIO_write(f, s, len);
3936 SvREFCNT_dec(sv);
3937 return wrote;
760ac839
LW
3938}
3939
3940#undef PerlIO_printf
6f9d8c32 3941int
14a5cf38 3942PerlIO_printf(PerlIO *f, const char *fmt, ...)
760ac839 3943{
14a5cf38
JH
3944 va_list ap;
3945 int result;
3946 va_start(ap, fmt);
3947 result = PerlIO_vprintf(f, fmt, ap);
3948 va_end(ap);
3949 return result;
760ac839
LW
3950}
3951
3952#undef PerlIO_stdoutf
6f9d8c32 3953int
14a5cf38 3954PerlIO_stdoutf(const char *fmt, ...)
760ac839 3955{
14a5cf38
JH
3956 va_list ap;
3957 int result;
3958 va_start(ap, fmt);
3959 result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap);
3960 va_end(ap);
3961 return result;
760ac839
LW
3962}
3963
3964#undef PerlIO_tmpfile
3965PerlIO *
c78749f2 3966PerlIO_tmpfile(void)
760ac839 3967{
14a5cf38 3968 /*
71200d45 3969 * I have no idea how portable mkstemp() is ...
14a5cf38 3970 */
83b075c3 3971#if defined(WIN32) || !defined(HAVE_MKSTEMP)
14a5cf38
JH
3972 dTHX;
3973 PerlIO *f = NULL;
3974 FILE *stdio = PerlSIO_tmpfile();
3975 if (stdio) {
3976 PerlIOStdio *s =
3977 PerlIOSelf(PerlIO_push
3978 (aTHX_(f = PerlIO_allocate(aTHX)), &PerlIO_stdio,
3979 "w+", Nullsv), PerlIOStdio);
3980 s->stdio = stdio;
3981 }
3982 return f;
83b075c3 3983#else
14a5cf38
JH
3984 dTHX;
3985 SV *sv = newSVpv("/tmp/PerlIO_XXXXXX", 0);
3986 int fd = mkstemp(SvPVX(sv));
3987 PerlIO *f = NULL;
3988 if (fd >= 0) {
3989 f = PerlIO_fdopen(fd, "w+");
3990 if (f) {
3991 PerlIOBase(f)->flags |= PERLIO_F_TEMP;
3992 }
3993 PerlLIO_unlink(SvPVX(sv));
3994 SvREFCNT_dec(sv);
3995 }
3996 return f;
83b075c3 3997#endif
760ac839
LW
3998}
3999
6f9d8c32
NIS
4000#undef HAS_FSETPOS
4001#undef HAS_FGETPOS
4002
14a5cf38
JH
4003#endif /* USE_SFIO */
4004#endif /* PERLIO_IS_STDIO */
760ac839 4005
9e353e3b 4006/*======================================================================================*/
14a5cf38 4007/*
71200d45
NIS
4008 * Now some functions in terms of above which may be needed even if we are
4009 * not in true PerlIO mode
9e353e3b
NIS
4010 */
4011
760ac839
LW
4012#ifndef HAS_FSETPOS
4013#undef PerlIO_setpos
4014int
766a733e 4015PerlIO_setpos(PerlIO *f, SV *pos)
760ac839 4016{
14a5cf38
JH
4017 dTHX;
4018 if (SvOK(pos)) {
4019 STRLEN len;
4020 Off_t *posn = (Off_t *) SvPV(pos, len);
4021 if (f && len == sizeof(Off_t))
4022 return PerlIO_seek(f, *posn, SEEK_SET);
4023 }
4024 SETERRNO(EINVAL, SS$_IVCHAN);
4025 return -1;
760ac839 4026}
c411622e 4027#else
c411622e
PP
4028#undef PerlIO_setpos
4029int
766a733e 4030PerlIO_setpos(PerlIO *f, SV *pos)
c411622e 4031{
14a5cf38
JH
4032 dTHX;
4033 if (SvOK(pos)) {
4034 STRLEN len;
4035 Fpos_t *fpos = (Fpos_t *) SvPV(pos, len);
4036 if (f && len == sizeof(Fpos_t)) {
2d4389e4 4037#if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64)
14a5cf38 4038 return fsetpos64(f, fpos);
d9b3e12d 4039#else
14a5cf38 4040 return fsetpos(f, fpos);
d9b3e12d 4041#endif
14a5cf38 4042 }
766a733e 4043 }
14a5cf38
JH
4044 SETERRNO(EINVAL, SS$_IVCHAN);
4045 return -1;
c411622e
PP
4046}
4047#endif
760ac839