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Fix open.pm to work via XS-implemented method calls rather
[perl5.git] / perlio.c
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1/* perlio.c
2 *
26fb694e 3 * Copyright (c) 1996-2001, Nick Ing-Simmons
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4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
8 */
9
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NIS
10/* If we have ActivePerl-like PERL_IMPLICIT_SYS then we need
11 a dTHX to get at the dispatch tables, even when we do not
12 need it for other reasons.
13 Invent a dSYS macro to abstract this out
14*/
15#ifdef PERL_IMPLICIT_SYS
16#define dSYS dTHX
17#else
18#define dSYS dNOOP
19#endif
20
760ac839 21#define VOIDUSED 1
12ae5dfc
JH
22#ifdef PERL_MICRO
23# include "uconfig.h"
24#else
25# include "config.h"
26#endif
760ac839 27
6f9d8c32 28#define PERLIO_NOT_STDIO 0
760ac839 29#if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO)
6f9d8c32 30/* #define PerlIO FILE */
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31#endif
32/*
6f9d8c32 33 * This file provides those parts of PerlIO abstraction
88b61e10 34 * which are not #defined in perlio.h.
6f9d8c32 35 * Which these are depends on various Configure #ifdef's
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36 */
37
38#include "EXTERN.h"
864dbfa3 39#define PERL_IN_PERLIO_C
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40#include "perl.h"
41
0c4f7ff0
NIS
42#include "XSUB.h"
43
5f1a76d0
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44#undef PerlMemShared_calloc
45#define PerlMemShared_calloc(x,y) calloc(x,y)
46#undef PerlMemShared_free
47#define PerlMemShared_free(x) free(x)
48
60382766 49int
f5b9d040 50perlsio_binmode(FILE *fp, int iotype, int mode)
60382766
NIS
51{
52/* This used to be contents of do_binmode in doio.c */
53#ifdef DOSISH
54# if defined(atarist) || defined(__MINT__)
f5b9d040 55 if (!fflush(fp)) {
60382766
NIS
56 if (mode & O_BINARY)
57 ((FILE*)fp)->_flag |= _IOBIN;
58 else
59 ((FILE*)fp)->_flag &= ~ _IOBIN;
60 return 1;
61 }
62 return 0;
63# else
eb73beca 64 dTHX;
f5b9d040 65 if (PerlLIO_setmode(fileno(fp), mode) != -1) {
60382766
NIS
66# if defined(WIN32) && defined(__BORLANDC__)
67 /* The translation mode of the stream is maintained independent
68 * of the translation mode of the fd in the Borland RTL (heavy
69 * digging through their runtime sources reveal). User has to
70 * set the mode explicitly for the stream (though they don't
71 * document this anywhere). GSAR 97-5-24
72 */
f5b9d040 73 fseek(fp,0L,0);
60382766 74 if (mode & O_BINARY)
f5b9d040 75 fp->flags |= _F_BIN;
60382766 76 else
f5b9d040 77 fp->flags &= ~ _F_BIN;
60382766
NIS
78# endif
79 return 1;
80 }
81 else
82 return 0;
83# endif
84#else
85# if defined(USEMYBINMODE)
86 if (my_binmode(fp, iotype, mode) != FALSE)
87 return 1;
88 else
89 return 0;
90# else
91 return 1;
92# endif
93#endif
94}
95
eb73beca
NIS
96#ifndef PERLIO_LAYERS
97int
98PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names)
99{
100 if (!names || !*names || strEQ(names,":crlf") || strEQ(names,":raw"))
101 {
102 return 0;
103 }
104 Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl",names);
105 /* NOTREACHED */
106 return -1;
107}
108
13621cfb
NIS
109void
110PerlIO_destruct(pTHX)
111{
112}
113
f5b9d040
NIS
114int
115PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names)
116{
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117#ifdef USE_SFIO
118 return 1;
119#else
f5b9d040 120 return perlsio_binmode(fp,iotype,mode);
92bff44d 121#endif
f5b9d040 122}
60382766 123
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NIS
124/* De-mux PerlIO_openn() into fdopen, freopen and fopen type entries */
125
126PerlIO *
127PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args)
128{
129 if (narg == 1)
130 {
f6c77cf1
NIS
131 if (*args == &PL_sv_undef)
132 return PerlIO_tmpfile();
ee518936
NIS
133 else
134 {
f6c77cf1
NIS
135 char *name = SvPV_nolen(*args);
136 if (*mode == '#')
137 {
138 fd = PerlLIO_open3(name,imode,perm);
139 if (fd >= 0)
0dac06c4 140 return PerlIO_fdopen(fd,(char *)mode+1);
f6c77cf1
NIS
141 }
142 else if (old)
143 {
144 return PerlIO_reopen(name,mode,old);
145 }
146 else
147 {
148 return PerlIO_open(name,mode);
149 }
ee518936
NIS
150 }
151 }
152 else
153 {
0dac06c4 154 return PerlIO_fdopen(fd,(char *)mode);
ee518936
NIS
155 }
156 return NULL;
157}
158
0c4f7ff0
NIS
159XS(XS_PerlIO__Layer__find)
160{
161 dXSARGS;
162 if (items < 2)
163 Perl_croak(aTHX_ "Usage class->find(name[,load])");
164 else
165 {
166 char *name = SvPV_nolen(ST(1));
167 ST(0) = (strEQ(name,"crlf") || strEQ(name,"raw")) ? &PL_sv_yes : &PL_sv_undef;
168 XSRETURN(1);
169 }
170}
171
172
173void
174Perl_boot_core_PerlIO(pTHX)
175{
176 newXS("PerlIO::Layer::find",XS_PerlIO__Layer__find,__FILE__);
177}
178
ac27b0f5
NIS
179#endif
180
32e30700 181
6f9d8c32 182#ifdef PERLIO_IS_STDIO
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183
184void
8ac85365 185PerlIO_init(void)
760ac839 186{
6f9d8c32 187 /* Does nothing (yet) except force this file to be included
760ac839 188 in perl binary. That allows this file to force inclusion
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NIS
189 of other functions that may be required by loadable
190 extensions e.g. for FileHandle::tmpfile
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191 */
192}
193
33dcbb9a
PP
194#undef PerlIO_tmpfile
195PerlIO *
8ac85365 196PerlIO_tmpfile(void)
33dcbb9a
PP
197{
198 return tmpfile();
199}
200
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201#else /* PERLIO_IS_STDIO */
202
203#ifdef USE_SFIO
204
205#undef HAS_FSETPOS
206#undef HAS_FGETPOS
207
6f9d8c32 208/* This section is just to make sure these functions
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209 get pulled in from libsfio.a
210*/
211
212#undef PerlIO_tmpfile
213PerlIO *
c78749f2 214PerlIO_tmpfile(void)
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215{
216 return sftmp(0);
217}
218
219void
c78749f2 220PerlIO_init(void)
760ac839 221{
6f9d8c32
NIS
222 /* Force this file to be included in perl binary. Which allows
223 * this file to force inclusion of other functions that may be
224 * required by loadable extensions e.g. for FileHandle::tmpfile
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225 */
226
227 /* Hack
228 * sfio does its own 'autoflush' on stdout in common cases.
6f9d8c32 229 * Flush results in a lot of lseek()s to regular files and
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230 * lot of small writes to pipes.
231 */
232 sfset(sfstdout,SF_SHARE,0);
233}
234
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NIS
235PerlIO *
236PerlIO_importFILE(FILE *stdio, int fl)
237{
238 int fd = fileno(stdio);
239 PerlIO *r = PerlIO_fdopen(fd,"r+");
240 return r;
241}
242
243FILE *
244PerlIO_findFILE(PerlIO *pio)
245{
246 int fd = PerlIO_fileno(pio);
247 FILE *f = fdopen(fd,"r+");
248 PerlIO_flush(pio);
249 if (!f && errno == EINVAL)
250 f = fdopen(fd,"w");
251 if (!f && errno == EINVAL)
252 f = fdopen(fd,"r");
253 return f;
254}
255
256
17c3b450 257#else /* USE_SFIO */
6f9d8c32 258/*======================================================================================*/
6f9d8c32 259/* Implement all the PerlIO interface ourselves.
9e353e3b 260 */
760ac839 261
76ced9ad
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262#include "perliol.h"
263
b1ef6e3b 264/* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */
02f66e2f
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265#ifdef I_UNISTD
266#include <unistd.h>
267#endif
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NIS
268#ifdef HAS_MMAP
269#include <sys/mman.h>
270#endif
271
02f66e2f 272
88b61e10 273void PerlIO_debug(const char *fmt,...) __attribute__((format(__printf__,1,2)));
6f9d8c32 274
6f9d8c32 275void
88b61e10 276PerlIO_debug(const char *fmt,...)
6f9d8c32
NIS
277{
278 static int dbg = 0;
88b61e10 279 va_list ap;
7bcba3d4 280 dSYS;
88b61e10 281 va_start(ap,fmt);
6f9d8c32
NIS
282 if (!dbg)
283 {
00b02797 284 char *s = PerlEnv_getenv("PERLIO_DEBUG");
6f9d8c32 285 if (s && *s)
00b02797 286 dbg = PerlLIO_open3(s,O_WRONLY|O_CREAT|O_APPEND,0666);
6f9d8c32
NIS
287 else
288 dbg = -1;
289 }
290 if (dbg > 0)
291 {
292 dTHX;
6f9d8c32
NIS
293 SV *sv = newSVpvn("",0);
294 char *s;
295 STRLEN len;
05d1247b
NIS
296 s = CopFILE(PL_curcop);
297 if (!s)
298 s = "(none)";
299 Perl_sv_catpvf(aTHX_ sv, "%s:%"IVdf" ", s, (IV)CopLINE(PL_curcop));
c7fc522f
NIS
300 Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap);
301
6f9d8c32 302 s = SvPV(sv,len);
00b02797 303 PerlLIO_write(dbg,s,len);
6f9d8c32
NIS
304 SvREFCNT_dec(sv);
305 }
88b61e10 306 va_end(ap);
6f9d8c32
NIS
307}
308
9e353e3b
NIS
309/*--------------------------------------------------------------------------------------*/
310
9e353e3b
NIS
311/* Inner level routines */
312
b1ef6e3b 313/* Table of pointers to the PerlIO structs (malloc'ed) */
05d1247b
NIS
314PerlIO *_perlio = NULL;
315#define PERLIO_TABLE_SIZE 64
6f9d8c32 316
e3f3bf95
NIS
317
318
760ac839 319PerlIO *
5f1a76d0 320PerlIO_allocate(pTHX)
6f9d8c32 321{
f3862f8b 322 /* Find a free slot in the table, allocating new table as necessary */
5f1a76d0 323 PerlIO **last;
6f9d8c32 324 PerlIO *f;
5f1a76d0 325 last = &_perlio;
05d1247b 326 while ((f = *last))
6f9d8c32 327 {
05d1247b
NIS
328 int i;
329 last = (PerlIO **)(f);
330 for (i=1; i < PERLIO_TABLE_SIZE; i++)
6f9d8c32 331 {
05d1247b 332 if (!*++f)
6f9d8c32 333 {
6f9d8c32
NIS
334 return f;
335 }
6f9d8c32 336 }
6f9d8c32 337 }
5f1a76d0 338 f = PerlMemShared_calloc(PERLIO_TABLE_SIZE,sizeof(PerlIO));
05d1247b 339 if (!f)
5f1a76d0
NIS
340 {
341 return NULL;
766a733e 342 }
05d1247b
NIS
343 *last = f;
344 return f+1;
345}
346
347void
5f1a76d0 348PerlIO_cleantable(pTHX_ PerlIO **tablep)
05d1247b
NIS
349{
350 PerlIO *table = *tablep;
351 if (table)
352 {
353 int i;
5f1a76d0 354 PerlIO_cleantable(aTHX_ (PerlIO **) &(table[0]));
05d1247b
NIS
355 for (i=PERLIO_TABLE_SIZE-1; i > 0; i--)
356 {
357 PerlIO *f = table+i;
60382766 358 if (*f)
3789aae2
NIS
359 {
360 PerlIO_close(f);
361 }
05d1247b 362 }
5f1a76d0 363 PerlMemShared_free(table);
05d1247b
NIS
364 *tablep = NULL;
365 }
366}
367
fcf2db38
NIS
368PerlIO_list_t *PerlIO_known_layers;
369PerlIO_list_t *PerlIO_def_layerlist;
370
371PerlIO_list_t *
372PerlIO_list_alloc(void)
373{
374 PerlIO_list_t *list;
375 Newz('L',list,1,PerlIO_list_t);
376 list->refcnt = 1;
377 return list;
378}
379
380void
381PerlIO_list_free(PerlIO_list_t *list)
382{
383 if (list)
384 {
385 if (--list->refcnt == 0)
386 {
387 if (list->array)
388 {
389 dTHX;
390 IV i;
391 for (i=0; i < list->cur; i++)
392 {
393 if (list->array[i].arg)
394 SvREFCNT_dec(list->array[i].arg);
395 }
396 Safefree(list->array);
397 }
398 Safefree(list);
399 }
400 }
401}
402
403void
404PerlIO_list_push(PerlIO_list_t *list,PerlIO_funcs *funcs,SV *arg)
405{
8bdaa535 406 dTHX;
fcf2db38
NIS
407 PerlIO_pair_t *p;
408 if (list->cur >= list->len)
409 {
410 list->len += 8;
411 if (list->array)
412 Renew(list->array,list->len,PerlIO_pair_t);
413 else
414 New('l',list->array,list->len,PerlIO_pair_t);
415 }
416 p = &(list->array[list->cur++]);
417 p->funcs = funcs;
e06a3afb 418 if ((p->arg = arg)) {
fcf2db38 419 SvREFCNT_inc(arg);
e06a3afb 420 }
fcf2db38
NIS
421}
422
4a4a6116 423
05d1247b 424void
9a6404c5
DM
425PerlIO_cleanup_layers(pTHXo_ void *data)
426{
fcf2db38
NIS
427#if 0
428 PerlIO_known_layers = Nullhv;
429 PerlIO_def_layerlist = Nullav;
430#endif
9a6404c5
DM
431}
432
433void
5f1a76d0 434PerlIO_cleanup()
05d1247b 435{
5f1a76d0
NIS
436 dTHX;
437 PerlIO_cleantable(aTHX_ &_perlio);
6f9d8c32
NIS
438}
439
9e353e3b 440void
13621cfb
NIS
441PerlIO_destruct(pTHX)
442{
443 PerlIO **table = &_perlio;
444 PerlIO *f;
445 while ((f = *table))
446 {
447 int i;
448 table = (PerlIO **)(f++);
449 for (i=1; i < PERLIO_TABLE_SIZE; i++)
450 {
451 PerlIO *x = f;
452 PerlIOl *l;
453 while ((l = *x))
454 {
455 if (l->tab->kind & PERLIO_K_DESTRUCT)
456 {
457 PerlIO_debug("Destruct popping %s\n",l->tab->name);
458 PerlIO_flush(x);
459 PerlIO_pop(aTHX_ x);
460 }
461 else
462 {
463 x = PerlIONext(x);
464 }
465 }
466 f++;
467 }
468 }
469}
470
471void
a999f61b 472PerlIO_pop(pTHX_ PerlIO *f)
760ac839 473{
9e353e3b
NIS
474 PerlIOl *l = *f;
475 if (l)
6f9d8c32 476 {
86295796 477 PerlIO_debug("PerlIO_pop f=%p %s\n",f,l->tab->name);
26fb694e
NIS
478 if (l->tab->Popped)
479 (*l->tab->Popped)(f);
9e353e3b 480 *f = l->next;
5f1a76d0 481 PerlMemShared_free(l);
6f9d8c32 482 }
6f9d8c32
NIS
483}
484
9e353e3b 485/*--------------------------------------------------------------------------------------*/
b931b1d9 486/* XS Interface for perl code */
9e353e3b 487
fcf2db38 488PerlIO_funcs *
2edd7e44 489PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load)
f3862f8b 490{
fcf2db38 491 IV i;
766a733e 492 if ((SSize_t) len <= 0)
f3862f8b 493 len = strlen(name);
fcf2db38
NIS
494 for (i=0; i < PerlIO_known_layers->cur; i++)
495 {
496 PerlIO_funcs *f = PerlIO_known_layers->array[i].funcs;
497 if (strEQ(f->name,name))
498 {
499 PerlIO_debug("%.*s => %p\n",(int)len,name,f);
500 return f;
501 }
502 }
503 if (load && PL_subname && PerlIO_def_layerlist && PerlIO_def_layerlist->cur >= 2)
1141d9f8
NIS
504 {
505 SV *pkgsv = newSVpvn("PerlIO",6);
506 SV *layer = newSVpvn(name,len);
507 ENTER;
508 /* The two SVs are magically freed by load_module */
509 Perl_load_module(aTHX_ 0, pkgsv, Nullsv, layer, Nullsv);
510 LEAVE;
fcf2db38 511 return PerlIO_find_layer(aTHX_ name,len,0);
1141d9f8 512 }
fcf2db38
NIS
513 PerlIO_debug("Cannot find %.*s\n",(int)len,name);
514 return NULL;
f3862f8b
NIS
515}
516
2a1bc955 517#ifdef USE_ATTRIBUTES_FOR_PERLIO
b13b2135
NIS
518
519static int
520perlio_mg_set(pTHX_ SV *sv, MAGIC *mg)
521{
522 if (SvROK(sv))
523 {
b931b1d9 524 IO *io = GvIOn((GV *)SvRV(sv));
b13b2135
NIS
525 PerlIO *ifp = IoIFP(io);
526 PerlIO *ofp = IoOFP(io);
4659c93f 527 Perl_warn(aTHX_ "set %"SVf" %p %p %p",sv,io,ifp,ofp);
b13b2135
NIS
528 }
529 return 0;
530}
531
532static int
533perlio_mg_get(pTHX_ SV *sv, MAGIC *mg)
534{
535 if (SvROK(sv))
536 {
b931b1d9 537 IO *io = GvIOn((GV *)SvRV(sv));
b13b2135
NIS
538 PerlIO *ifp = IoIFP(io);
539 PerlIO *ofp = IoOFP(io);
4659c93f 540 Perl_warn(aTHX_ "get %"SVf" %p %p %p",sv,io,ifp,ofp);
b13b2135
NIS
541 }
542 return 0;
543}
544
545static int
546perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg)
547{
4659c93f 548 Perl_warn(aTHX_ "clear %"SVf,sv);
b13b2135
NIS
549 return 0;
550}
551
552static int
553perlio_mg_free(pTHX_ SV *sv, MAGIC *mg)
554{
4659c93f 555 Perl_warn(aTHX_ "free %"SVf,sv);
b13b2135
NIS
556 return 0;
557}
558
559MGVTBL perlio_vtab = {
560 perlio_mg_get,
561 perlio_mg_set,
562 NULL, /* len */
2a1bc955 563 perlio_mg_clear,
b13b2135
NIS
564 perlio_mg_free
565};
566
567XS(XS_io_MODIFY_SCALAR_ATTRIBUTES)
568{
569 dXSARGS;
570 SV *sv = SvRV(ST(1));
571 AV *av = newAV();
572 MAGIC *mg;
573 int count = 0;
574 int i;
14befaf4 575 sv_magic(sv, (SV *)av, PERL_MAGIC_ext, NULL, 0);
b13b2135 576 SvRMAGICAL_off(sv);
14befaf4 577 mg = mg_find(sv, PERL_MAGIC_ext);
b13b2135
NIS
578 mg->mg_virtual = &perlio_vtab;
579 mg_magical(sv);
4659c93f 580 Perl_warn(aTHX_ "attrib %"SVf,sv);
b13b2135
NIS
581 for (i=2; i < items; i++)
582 {
583 STRLEN len;
ac27b0f5 584 const char *name = SvPV(ST(i),len);
2edd7e44 585 SV *layer = PerlIO_find_layer(aTHX_ name,len,1);
b13b2135
NIS
586 if (layer)
587 {
588 av_push(av,SvREFCNT_inc(layer));
589 }
590 else
591 {
592 ST(count) = ST(i);
593 count++;
594 }
595 }
596 SvREFCNT_dec(av);
597 XSRETURN(count);
598}
599
2a1bc955
NIS
600#endif /* USE_ATTIBUTES_FOR_PERLIO */
601
e3f3bf95
NIS
602SV *
603PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab)
f3862f8b 604{
7d3b96bb 605 HV *stash = gv_stashpv("PerlIO::Layer", TRUE);
e7778b43 606 SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash);
e3f3bf95
NIS
607 return sv;
608}
609
0c4f7ff0
NIS
610XS(XS_PerlIO__Layer__find)
611{
612 dXSARGS;
613 if (items < 2)
614 Perl_croak(aTHX_ "Usage class->find(name[,load])");
615 else
616 {
617 STRLEN len = 0;
618 char *name = SvPV(ST(1),len);
619 bool load = (items > 2) ? SvTRUE(ST(2)) : 0;
620 PerlIO_funcs *layer = PerlIO_find_layer(aTHX_ name, len, load);
621 ST(0) = (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : &PL_sv_undef;
622 XSRETURN(1);
623 }
624}
625
e3f3bf95
NIS
626void
627PerlIO_define_layer(pTHX_ PerlIO_funcs *tab)
628{
fcf2db38
NIS
629 if (!PerlIO_known_layers)
630 PerlIO_known_layers = PerlIO_list_alloc();
631 PerlIO_list_push(PerlIO_known_layers,tab,Nullsv);
dfebf958 632 PerlIO_debug("define %s %p\n",tab->name,tab);
f3862f8b
NIS
633}
634
1141d9f8 635int
fcf2db38 636PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names)
1141d9f8
NIS
637{
638 if (names)
639 {
640 const char *s = names;
641 while (*s)
642 {
643 while (isSPACE(*s) || *s == ':')
644 s++;
645 if (*s)
646 {
647 STRLEN llen = 0;
648 const char *e = s;
649 const char *as = Nullch;
650 STRLEN alen = 0;
651 if (!isIDFIRST(*s))
652 {
653 /* Message is consistent with how attribute lists are passed.
654 Even though this means "foo : : bar" is seen as an invalid separator
655 character. */
656 char q = ((*s == '\'') ? '"' : '\'');
657 Perl_warn(aTHX_ "perlio: invalid separator character %c%c%c in layer specification list", q, *s, q);
658 return -1;
659 }
660 do
661 {
662 e++;
663 } while (isALNUM(*e));
664 llen = e-s;
665 if (*e == '(')
666 {
667 int nesting = 1;
668 as = ++e;
669 while (nesting)
670 {
671 switch (*e++)
672 {
673 case ')':
674 if (--nesting == 0)
675 alen = (e-1)-as;
676 break;
677 case '(':
678 ++nesting;
679 break;
680 case '\\':
681 /* It's a nul terminated string, not allowed to \ the terminating null.
682 Anything other character is passed over. */
683 if (*e++)
684 {
685 break;
686 }
687 /* Drop through */
688 case '\0':
689 e--;
690 Perl_warn(aTHX_ "perlio: argument list not closed for layer \"%.*s\"",(int)(e - s),s);
691 return -1;
692 default:
693 /* boring. */
694 break;
695 }
696 }
697 }
698 if (e > s)
699 {
fcf2db38 700 PerlIO_funcs *layer = PerlIO_find_layer(aTHX_ s,llen,1);
1141d9f8
NIS
701 if (layer)
702 {
fcf2db38 703 PerlIO_list_push(av, layer, (as) ? newSVpvn(as,alen) : &PL_sv_undef);
1141d9f8
NIS
704 }
705 else {
706 Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(int)llen,s);
707 return -1;
708 }
709 }
710 s = e;
711 }
712 }
713 }
714 return 0;
715}
716
dfebf958 717void
fcf2db38 718PerlIO_default_buffer(pTHX_ PerlIO_list_t *av)
dfebf958
NIS
719{
720 PerlIO_funcs *tab = &PerlIO_perlio;
721 if (O_BINARY != O_TEXT)
722 {
723 tab = &PerlIO_crlf;
724 }
725 else
726 {
727 if (PerlIO_stdio.Set_ptrcnt)
728 {
729 tab = &PerlIO_stdio;
730 }
731 }
732 PerlIO_debug("Pushing %s\n",tab->name);
fcf2db38 733 PerlIO_list_push(av,PerlIO_find_layer(aTHX_ tab->name,0,0),&PL_sv_undef);
dfebf958
NIS
734}
735
e3f3bf95 736SV *
fcf2db38 737PerlIO_arg_fetch(PerlIO_list_t *av,IV n)
e3f3bf95 738{
fcf2db38 739 return av->array[n].arg;
e3f3bf95
NIS
740}
741
f3862f8b 742PerlIO_funcs *
fcf2db38 743PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av,IV n,PerlIO_funcs *def)
f3862f8b 744{
fcf2db38 745 if (n >= 0 && n < av->cur)
e3f3bf95 746 {
fcf2db38
NIS
747 PerlIO_debug("Layer %ld is %s\n",n,av->array[n].funcs->name);
748 return av->array[n].funcs;
e3f3bf95
NIS
749 }
750 if (!def)
7c213558 751 Perl_croak(aTHX_ "panic: PerlIO layer array corrupt");
e3f3bf95
NIS
752 return def;
753}
754
fcf2db38 755PerlIO_list_t *
e3f3bf95
NIS
756PerlIO_default_layers(pTHX)
757{
fcf2db38 758 if (!PerlIO_def_layerlist)
f3862f8b 759 {
1141d9f8 760 const char *s = (PL_tainting) ? Nullch : PerlEnv_getenv("PERLIO");
fcf2db38 761 PerlIO_def_layerlist = PerlIO_list_alloc();
2a1bc955 762
a999f61b
NIS
763 PerlIO_define_layer(aTHX_ &PerlIO_raw);
764 PerlIO_define_layer(aTHX_ &PerlIO_unix);
765 PerlIO_define_layer(aTHX_ &PerlIO_perlio);
766 PerlIO_define_layer(aTHX_ &PerlIO_stdio);
767 PerlIO_define_layer(aTHX_ &PerlIO_crlf);
06da4f11 768#ifdef HAS_MMAP
a999f61b 769 PerlIO_define_layer(aTHX_ &PerlIO_mmap);
06da4f11 770#endif
a999f61b
NIS
771 PerlIO_define_layer(aTHX_ &PerlIO_utf8);
772 PerlIO_define_layer(aTHX_ &PerlIO_byte);
fcf2db38 773 PerlIO_list_push(PerlIO_def_layerlist,PerlIO_find_layer(aTHX_ PerlIO_unix.name,0,0),&PL_sv_undef);
f3862f8b
NIS
774 if (s)
775 {
fcf2db38 776 PerlIO_parse_layers(aTHX_ PerlIO_def_layerlist,s);
1141d9f8
NIS
777 }
778 else
779 {
fcf2db38 780 PerlIO_default_buffer(aTHX_ PerlIO_def_layerlist);
f3862f8b
NIS
781 }
782 }
fcf2db38 783 if (PerlIO_def_layerlist->cur < 2)
f3862f8b 784 {
fcf2db38 785 PerlIO_default_buffer(aTHX_ PerlIO_def_layerlist);
f3862f8b 786 }
fcf2db38 787 return PerlIO_def_layerlist;
e3f3bf95
NIS
788}
789
0c4f7ff0
NIS
790void
791Perl_boot_core_PerlIO(pTHX)
792{
793#ifdef USE_ATTRIBUTES_FOR_PERLIO
794 newXS("io::MODIFY_SCALAR_ATTRIBUTES",XS_io_MODIFY_SCALAR_ATTRIBUTES,__FILE__);
795#endif
796 newXS("PerlIO::Layer::find",XS_PerlIO__Layer__find,__FILE__);
797}
e3f3bf95
NIS
798
799PerlIO_funcs *
800PerlIO_default_layer(pTHX_ I32 n)
801{
fcf2db38 802 PerlIO_list_t *av = PerlIO_default_layers(aTHX);
f3862f8b 803 if (n < 0)
fcf2db38 804 n += av->cur;
e3f3bf95 805 return PerlIO_layer_fetch(aTHX_ av,n, &PerlIO_stdio);
f3862f8b
NIS
806}
807
a999f61b
NIS
808#define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1)
809#define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0)
60382766
NIS
810
811void
1141d9f8 812PerlIO_stdstreams(pTHX)
60382766
NIS
813{
814 if (!_perlio)
815 {
5f1a76d0 816 PerlIO_allocate(aTHX);
f5b9d040
NIS
817 PerlIO_fdopen(0,"Ir" PERLIO_STDTEXT);
818 PerlIO_fdopen(1,"Iw" PERLIO_STDTEXT);
819 PerlIO_fdopen(2,"Iw" PERLIO_STDTEXT);
60382766
NIS
820 }
821}
822
823PerlIO *
e3f3bf95 824PerlIO_push(pTHX_ PerlIO *f,PerlIO_funcs *tab,const char *mode,SV *arg)
60382766
NIS
825{
826 PerlIOl *l = NULL;
5f1a76d0 827 l = PerlMemShared_calloc(tab->size,sizeof(char));
60382766
NIS
828 if (l)
829 {
830 Zero(l,tab->size,char);
831 l->next = *f;
832 l->tab = tab;
833 *f = l;
8c0134a8
NIS
834 PerlIO_debug("PerlIO_push f=%p %s %s %p\n",f,tab->name,
835 (mode) ? mode : "(Null)",arg);
e3f3bf95 836 if ((*l->tab->Pushed)(f,mode,arg) != 0)
60382766 837 {
a999f61b 838 PerlIO_pop(aTHX_ f);
60382766
NIS
839 return NULL;
840 }
841 }
842 return f;
843}
844
dfebf958 845IV
e3f3bf95 846PerlIOPop_pushed(PerlIO *f, const char *mode, SV *arg)
4b803d04 847{
a999f61b
NIS
848 dTHX;
849 PerlIO_pop(aTHX_ f);
4b803d04
NIS
850 if (*f)
851 {
852 PerlIO_flush(f);
a999f61b 853 PerlIO_pop(aTHX_ f);
4b803d04
NIS
854 return 0;
855 }
856 return -1;
857}
858
859IV
e3f3bf95 860PerlIORaw_pushed(PerlIO *f, const char *mode, SV *arg)
dfebf958 861{
4b803d04 862 /* Remove the dummy layer */
a999f61b
NIS
863 dTHX;
864 PerlIO_pop(aTHX_ f);
dfebf958 865 /* Pop back to bottom layer */
4b803d04 866 if (f && *f)
dfebf958 867 {
4b803d04
NIS
868 PerlIO_flush(f);
869 while (!(PerlIOBase(f)->tab->kind & PERLIO_K_RAW))
dfebf958 870 {
4b803d04
NIS
871 if (*PerlIONext(f))
872 {
a999f61b 873 PerlIO_pop(aTHX_ f);
4b803d04
NIS
874 }
875 else
876 {
877 /* Nothing bellow - push unix on top then remove it */
e3f3bf95 878 if (PerlIO_push(aTHX_ f,PerlIO_default_btm(),mode,arg))
4b803d04 879 {
a999f61b 880 PerlIO_pop(aTHX_ PerlIONext(f));
4b803d04
NIS
881 }
882 break;
883 }
dfebf958 884 }
26fb694e 885 PerlIO_debug(":raw f=%p :%s\n",f,PerlIOBase(f)->tab->name);
dfebf958
NIS
886 return 0;
887 }
888 return -1;
889}
890
ac27b0f5 891int
fcf2db38 892PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, PerlIO_list_t *layers, IV n)
e3f3bf95 893{
fcf2db38 894 IV max = layers->cur;
e3f3bf95
NIS
895 int code = 0;
896 while (n < max)
897 {
898 PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers,n,NULL);
899 if (tab)
900 {
f6c77cf1 901 if (!PerlIO_push(aTHX_ f,tab,mode,PerlIOArg))
e3f3bf95 902 {
8c0134a8 903 code = -1;
e3f3bf95
NIS
904 break;
905 }
906 }
fcf2db38 907 n++;
e3f3bf95
NIS
908 }
909 return code;
910}
911
912int
ac27b0f5
NIS
913PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names)
914{
1141d9f8 915 int code = 0;
ac27b0f5
NIS
916 if (names)
917 {
fcf2db38 918 PerlIO_list_t *layers = PerlIO_list_alloc();
1141d9f8
NIS
919 code = PerlIO_parse_layers(aTHX_ layers,names);
920 if (code == 0)
ac27b0f5 921 {
e3f3bf95 922 code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0);
ac27b0f5 923 }
fcf2db38 924 PerlIO_list_free(layers);
ac27b0f5 925 }
1141d9f8 926 return code;
ac27b0f5
NIS
927}
928
f3862f8b 929
60382766
NIS
930/*--------------------------------------------------------------------------------------*/
931/* Given the abstraction above the public API functions */
932
933int
f5b9d040 934PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names)
76ced9ad 935{
86295796 936 PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n",
a4d3c1d3 937 f,PerlIOBase(f)->tab->name,iotype,mode, (names) ? names : "(Null)");
33af2bc7 938 if (!names && (O_TEXT != O_BINARY && (mode & O_BINARY)))
76ced9ad 939 {
f5b9d040 940 PerlIO *top = f;
60382766 941 PerlIOl *l;
b7953727 942 while ((l = *top))
76ced9ad 943 {
60382766
NIS
944 if (PerlIOBase(top)->tab == &PerlIO_crlf)
945 {
946 PerlIO_flush(top);
a4d3c1d3 947 PerlIOBase(top)->flags &= ~PERLIO_F_CRLF;
60382766
NIS
948 break;
949 }
950 top = PerlIONext(top);
76ced9ad
NIS
951 }
952 }
f5b9d040
NIS
953 return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE;
954}
955
956#undef PerlIO__close
957int
958PerlIO__close(PerlIO *f)
959{
882162d7
JH
960 if (f && *f)
961 return (*PerlIOBase(f)->tab->Close)(f);
962 else
963 {
964 SETERRNO(EBADF,SS$_IVCHAN);
965 return -1;
966 }
76ced9ad
NIS
967}
968
5f1a76d0
NIS
969#undef PerlIO_fdupopen
970PerlIO *
971PerlIO_fdupopen(pTHX_ PerlIO *f)
972{
882162d7
JH
973 if (f && *f)
974 {
975 char buf[8];
976 int fd = PerlLIO_dup(PerlIO_fileno(f));
977 PerlIO *new = PerlIO_fdopen(fd,PerlIO_modestr(f,buf));
978 if (new)
979 {
980 Off_t posn = PerlIO_tell(f);
981 PerlIO_seek(new,posn,SEEK_SET);
982 }
983 return new;
984 }
985 else
5f1a76d0 986 {
882162d7 987 SETERRNO(EBADF,SS$_IVCHAN);
440108a8 988 return NULL;
5f1a76d0 989 }
5f1a76d0 990}
f5b9d040 991
b931b1d9
NIS
992#undef PerlIO_close
993int
994PerlIO_close(PerlIO *f)
995{
a999f61b 996 dTHX;
f6c77cf1
NIS
997 int code = -1;
998 if (f && *f)
b931b1d9 999 {
f6c77cf1
NIS
1000 code = (*PerlIOBase(f)->tab->Close)(f);
1001 while (*f)
1002 {
1003 PerlIO_pop(aTHX_ f);
1004 }
b931b1d9
NIS
1005 }
1006 return code;
1007}
1008
1009#undef PerlIO_fileno
1010int
1011PerlIO_fileno(PerlIO *f)
1012{
882162d7
JH
1013 if (f && *f)
1014 return (*PerlIOBase(f)->tab->Fileno)(f);
1015 else
1016 {
1017 SETERRNO(EBADF,SS$_IVCHAN);
1018 return -1;
1019 }
b931b1d9
NIS
1020}
1021
1141d9f8
NIS
1022static const char *
1023PerlIO_context_layers(pTHX_ const char *mode)
1024{
1025 const char *type = NULL;
1026 /* Need to supply default layer info from open.pm */
1027 if (PL_curcop)
1028 {
1029 SV *layers = PL_curcop->cop_io;
1030 if (layers)
1031 {
1032 STRLEN len;
1033 type = SvPV(layers,len);
1034 if (type && mode[0] != 'r')
1035 {
1036 /* Skip to write part */
1037 const char *s = strchr(type,0);
1038 if (s && (s-type) < len)
1039 {
1040 type = s+1;
1041 }
1042 }
1043 }
1044 }
1045 return type;
1046}
1047
fcf2db38 1048static PerlIO_funcs *
2edd7e44
NIS
1049PerlIO_layer_from_ref(pTHX_ SV *sv)
1050{
1051 /* For any scalar type load the handler which is bundled with perl */
1052 if (SvTYPE(sv) < SVt_PVAV)
1053 return PerlIO_find_layer(aTHX_ "Scalar",6, 1);
1054
1055 /* For other types allow if layer is known but don't try and load it */
1056 switch (SvTYPE(sv))
1057 {
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 }
fcf2db38 1067 return NULL;
2edd7e44
NIS
1068}
1069
fcf2db38 1070PerlIO_list_t *
e3f3bf95 1071PerlIO_resolve_layers(pTHX_ const char *layers,const char *mode,int narg, SV **args)
ee518936 1072{
fcf2db38 1073 PerlIO_list_t *def = PerlIO_default_layers(aTHX);
f6c77cf1 1074 int incdef = 1;
e3f3bf95
NIS
1075 if (!_perlio)
1076 PerlIO_stdstreams(aTHX);
f6c77cf1
NIS
1077 if (narg)
1078 {
2edd7e44
NIS
1079 SV *arg = *args;
1080 /* If it is a reference but not an object see if we have a handler for it */
1081 if (SvROK(arg) && !sv_isobject(arg))
f6c77cf1 1082 {
fcf2db38 1083 PerlIO_funcs *handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg));
2edd7e44 1084 if (handler)
f6c77cf1 1085 {
fcf2db38
NIS
1086 def = PerlIO_list_alloc();
1087 PerlIO_list_push(def,handler,&PL_sv_undef);
2edd7e44 1088 incdef = 0;
f6c77cf1 1089 }
2edd7e44
NIS
1090 /* Don't fail if handler cannot be found
1091 * :Via(...) etc. may do something sensible
1092 * else we will just stringfy and open resulting string.
1093 */
f6c77cf1
NIS
1094 }
1095 }
1141d9f8
NIS
1096 if (!layers)
1097 layers = PerlIO_context_layers(aTHX_ mode);
e3f3bf95
NIS
1098 if (layers && *layers)
1099 {
fcf2db38 1100 PerlIO_list_t *av;
f6c77cf1 1101 if (incdef)
e3f3bf95 1102 {
fcf2db38
NIS
1103 IV i = def->cur;
1104 av = PerlIO_list_alloc();
1105 for (i=0; i < def->cur; i++)
f6c77cf1 1106 {
fcf2db38 1107 PerlIO_list_push(av,def->array[i].funcs,def->array[i].arg);
f6c77cf1
NIS
1108 }
1109 }
1110 else
1111 {
1112 av = def;
e3f3bf95
NIS
1113 }
1114 PerlIO_parse_layers(aTHX_ av,layers);
1115 return av;
1116 }
1117 else
1118 {
f6c77cf1 1119 if (incdef)
fcf2db38 1120 def->refcnt++;
e3f3bf95
NIS
1121 return def;
1122 }
ee518936
NIS
1123}
1124
1125PerlIO *
1126PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args)
1127{
f6c77cf1 1128 if (!f && narg == 1 && *args == &PL_sv_undef)
5e334b7b 1129 {
f6c77cf1 1130 if ((f = PerlIO_tmpfile()))
e3f3bf95 1131 {
f6c77cf1
NIS
1132 if (!layers)
1133 layers = PerlIO_context_layers(aTHX_ mode);
1134 if (layers && *layers)
1135 PerlIO_apply_layers(aTHX_ f,mode,layers);
e3f3bf95 1136 }
5e334b7b 1137 }
e3f3bf95
NIS
1138 else
1139 {
fcf2db38 1140 PerlIO_list_t *layera = NULL;
f6c77cf1 1141 IV n;
b7953727 1142 PerlIO_funcs *tab = NULL;
f6c77cf1 1143 if (f && *f)
e3f3bf95 1144 {
f6c77cf1
NIS
1145 /* This is "reopen" - it is not tested as perl does not use it yet */
1146 PerlIOl *l = *f;
fcf2db38 1147 layera = PerlIO_list_alloc();
f6c77cf1
NIS
1148 while (l)
1149 {
1150 SV *arg = (l->tab->Getarg) ? (*l->tab->Getarg)(&l) : &PL_sv_undef;
fcf2db38 1151 PerlIO_list_push(layera,l->tab,arg);
f6c77cf1
NIS
1152 l = *PerlIONext(&l);
1153 }
e3f3bf95 1154 }
f6c77cf1
NIS
1155 else
1156 {
1157 layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args);
1158 }
fcf2db38
NIS
1159 /* Start at "top" of layer stack */
1160 n = layera->cur-1;
f6c77cf1
NIS
1161 while (n >= 0)
1162 {
1163 PerlIO_funcs *t = PerlIO_layer_fetch(aTHX_ layera,n,NULL);
1164 if (t && t->Open)
1165 {
1166 tab = t;
1167 break;
1168 }
fcf2db38 1169 n--;
f6c77cf1
NIS
1170 }
1171 if (tab)
e3f3bf95 1172 {
fcf2db38 1173 /* Found that layer 'n' can do opens - call it */
f6c77cf1
NIS
1174 PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n",
1175 tab->name,layers,mode,fd,imode,perm,f,narg,args);
1176 f = (*tab->Open)(aTHX_ tab, layera, n, mode,fd,imode,perm,f,narg,args);
1177 if (f)
e3f3bf95 1178 {
fcf2db38 1179 if (n+1 < layera->cur)
e3f3bf95 1180 {
fcf2db38
NIS
1181 /* More layers above the one that we used to open - apply them now */
1182 if (PerlIO_apply_layera(aTHX_ f, mode, layera, n+1) != 0)
f6c77cf1
NIS
1183 {
1184 f = NULL;
1185 }
e3f3bf95
NIS
1186 }
1187 }
1188 }
fcf2db38 1189 PerlIO_list_free(layera);
e3f3bf95 1190 }
5e334b7b 1191 return f;
ee518936 1192}
b931b1d9
NIS
1193
1194
9e353e3b
NIS
1195#undef PerlIO_fdopen
1196PerlIO *
1197PerlIO_fdopen(int fd, const char *mode)
1198{
ee518936
NIS
1199 dTHX;
1200 return PerlIO_openn(aTHX_ Nullch,mode,fd,0,0,NULL,0,NULL);
9e353e3b
NIS
1201}
1202
6f9d8c32
NIS
1203#undef PerlIO_open
1204PerlIO *
1205PerlIO_open(const char *path, const char *mode)
1206{
ee518936
NIS
1207 dTHX;
1208 SV *name = sv_2mortal(newSVpvn(path,strlen(path)));
1209 return PerlIO_openn(aTHX_ Nullch,mode,-1,0,0,NULL,1,&name);
6f9d8c32
NIS
1210}
1211
9e353e3b
NIS
1212#undef PerlIO_reopen
1213PerlIO *
1214PerlIO_reopen(const char *path, const char *mode, PerlIO *f)
6f9d8c32 1215{
ee518936
NIS
1216 dTHX;
1217 SV *name = sv_2mortal(newSVpvn(path,strlen(path)));
1218 return PerlIO_openn(aTHX_ Nullch,mode,-1,0,0,f,1,&name);
760ac839
LW
1219}
1220
9e353e3b
NIS
1221#undef PerlIO_read
1222SSize_t
1223PerlIO_read(PerlIO *f, void *vbuf, Size_t count)
6f9d8c32 1224{
ba412a5d 1225 if (f && *f)
882162d7 1226 return (*PerlIOBase(f)->tab->Read)(f,vbuf,count);
ba412a5d
JH
1227 else
1228 {
1229 SETERRNO(EBADF,SS$_IVCHAN);
1230 return -1;
1231 }
760ac839
LW
1232}
1233
313ca112
NIS
1234#undef PerlIO_unread
1235SSize_t
1236PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count)
760ac839 1237{
ba412a5d
JH
1238 if (f && *f)
1239 return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count);
1240 else
1241 {
1242 SETERRNO(EBADF,SS$_IVCHAN);
1243 return -1;
1244 }
760ac839
LW
1245}
1246
9e353e3b
NIS
1247#undef PerlIO_write
1248SSize_t
1249PerlIO_write(PerlIO *f, const void *vbuf, Size_t count)
760ac839 1250{
ba412a5d 1251 if (f && *f)
882162d7 1252 return (*PerlIOBase(f)->tab->Write)(f,vbuf,count);
ba412a5d
JH
1253 else
1254 {
1255 SETERRNO(EBADF,SS$_IVCHAN);
1256 return -1;
1257 }
760ac839
LW
1258}
1259
9e353e3b 1260#undef PerlIO_seek
6f9d8c32 1261int
9e353e3b 1262PerlIO_seek(PerlIO *f, Off_t offset, int whence)
760ac839 1263{
ba412a5d
JH
1264 if (f && *f)
1265 return (*PerlIOBase(f)->tab->Seek)(f,offset,whence);
1266 else
1267 {
1268 SETERRNO(EBADF,SS$_IVCHAN);
1269 return -1;
1270 }
760ac839
LW
1271}
1272
9e353e3b
NIS
1273#undef PerlIO_tell
1274Off_t
1275PerlIO_tell(PerlIO *f)
760ac839 1276{
ba412a5d
JH
1277 if (f && *f)
1278 return (*PerlIOBase(f)->tab->Tell)(f);
1279 else
1280 {
1281 SETERRNO(EBADF,SS$_IVCHAN);
1282 return -1;
1283 }
760ac839
LW
1284}
1285
9e353e3b 1286#undef PerlIO_flush
6f9d8c32 1287int
9e353e3b 1288PerlIO_flush(PerlIO *f)
760ac839 1289{
6f9d8c32
NIS
1290 if (f)
1291 {
ba412a5d 1292 if (*f)
26fb694e 1293 {
ba412a5d
JH
1294 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1295 if (tab && tab->Flush)
1296 {
1297 return (*tab->Flush)(f);
1298 }
1299 else
1300 {
1301 PerlIO_debug("Cannot flush f=%p :%s\n",f,tab->name);
1302 SETERRNO(EBADF,SS$_IVCHAN);
1303 return -1;
1304 }
26fb694e
NIS
1305 }
1306 else
1307 {
ba412a5d
JH
1308 PerlIO_debug("Cannot flush f=%p\n",f);
1309 SETERRNO(EBADF,SS$_IVCHAN);
26fb694e
NIS
1310 return -1;
1311 }
6f9d8c32 1312 }
2a1bc955
NIS
1313 else
1314 {
ba412a5d
JH
1315 /* Is it good API design to do flush-all on NULL,
1316 * a potentially errorneous input? Maybe some magical
1317 * value (PerlIO* PERLIO_FLUSH_ALL = (PerlIO*)-1;)?
1318 * Yes, stdio does similar things on fflush(NULL),
1319 * but should we be bound by their design decisions?
1320 * --jhi */
05d1247b 1321 PerlIO **table = &_perlio;
9e353e3b 1322 int code = 0;
05d1247b 1323 while ((f = *table))
6f9d8c32 1324 {
05d1247b
NIS
1325 int i;
1326 table = (PerlIO **)(f++);
1327 for (i=1; i < PERLIO_TABLE_SIZE; i++)
9e353e3b
NIS
1328 {
1329 if (*f && PerlIO_flush(f) != 0)
1330 code = -1;
05d1247b 1331 f++;
9e353e3b 1332 }
6f9d8c32 1333 }
9e353e3b 1334 return code;
6f9d8c32 1335 }
760ac839
LW
1336}
1337
a9c883f6
NIS
1338void
1339PerlIOBase_flush_linebuf()
1340{
1341 PerlIO **table = &_perlio;
1342 PerlIO *f;
1343 while ((f = *table))
1344 {
1345 int i;
1346 table = (PerlIO **)(f++);
1347 for (i=1; i < PERLIO_TABLE_SIZE; i++)
1348 {
1349 if (*f && (PerlIOBase(f)->flags & (PERLIO_F_LINEBUF|PERLIO_F_CANWRITE))
1350 == (PERLIO_F_LINEBUF|PERLIO_F_CANWRITE))
1351 PerlIO_flush(f);
1352 f++;
1353 }
1354 }
1355}
1356
06da4f11
NIS
1357#undef PerlIO_fill
1358int
1359PerlIO_fill(PerlIO *f)
1360{
ba412a5d
JH
1361 if (f && *f)
1362 return (*PerlIOBase(f)->tab->Fill)(f);
1363 else
1364 {
1365 SETERRNO(EBADF,SS$_IVCHAN);
1366 return -1;
2a1bc955 1367 }
06da4f11
NIS
1368}
1369
f3862f8b
NIS
1370#undef PerlIO_isutf8
1371int
1372PerlIO_isutf8(PerlIO *f)
1373{
ba412a5d
JH
1374 if (f && *f)
1375 return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0;
1376 else
1377 {
1378 SETERRNO(EBADF,SS$_IVCHAN);
1379 return -1;
1380 }
f3862f8b
NIS
1381}
1382
9e353e3b 1383#undef PerlIO_eof
6f9d8c32 1384int
9e353e3b 1385PerlIO_eof(PerlIO *f)
760ac839 1386{
ba412a5d
JH
1387 if (f && *f)
1388 return (*PerlIOBase(f)->tab->Eof)(f);
1389 else
1390 {
1391 SETERRNO(EBADF,SS$_IVCHAN);
1392 return -1;
1393 }
9e353e3b
NIS
1394}
1395
1396#undef PerlIO_error
1397int
1398PerlIO_error(PerlIO *f)
1399{
ba412a5d
JH
1400 if (f && *f)
1401 return (*PerlIOBase(f)->tab->Error)(f);
1402 else
1403 {
1404 SETERRNO(EBADF,SS$_IVCHAN);
1405 return -1;
1406 }
9e353e3b
NIS
1407}
1408
1409#undef PerlIO_clearerr
1410void
1411PerlIO_clearerr(PerlIO *f)
1412{
f5b9d040
NIS
1413 if (f && *f)
1414 (*PerlIOBase(f)->tab->Clearerr)(f);
ba412a5d
JH
1415 else
1416 SETERRNO(EBADF,SS$_IVCHAN);
9e353e3b
NIS
1417}
1418
1419#undef PerlIO_setlinebuf
1420void
1421PerlIO_setlinebuf(PerlIO *f)
1422{
ba412a5d
JH
1423 if (f && *f)
1424 (*PerlIOBase(f)->tab->Setlinebuf)(f);
1425 else
1426 SETERRNO(EBADF,SS$_IVCHAN);
9e353e3b
NIS
1427}
1428
1429#undef PerlIO_has_base
1430int
1431PerlIO_has_base(PerlIO *f)
1432{
ba412a5d 1433 if (f && *f) { return (PerlIOBase(f)->tab->Get_base != NULL); }
9e353e3b 1434 return 0;
760ac839
LW
1435}
1436
9e353e3b
NIS
1437#undef PerlIO_fast_gets
1438int
1439PerlIO_fast_gets(PerlIO *f)
760ac839 1440{
5e2ab84b 1441 if (f && *f && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS))
6f9d8c32 1442 {
5e2ab84b
NIS
1443 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1444 return (tab->Set_ptrcnt != NULL);
6f9d8c32 1445 }
9e353e3b
NIS
1446 return 0;
1447}
1448
1449#undef PerlIO_has_cntptr
1450int
1451PerlIO_has_cntptr(PerlIO *f)
1452{
1453 if (f && *f)
1454 {
1455 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1456 return (tab->Get_ptr != NULL && tab->Get_cnt != NULL);
1457 }
1458 return 0;
1459}
1460
1461#undef PerlIO_canset_cnt
1462int
1463PerlIO_canset_cnt(PerlIO *f)
1464{
1465 if (f && *f)
1466 {
c7fc522f
NIS
1467 PerlIOl *l = PerlIOBase(f);
1468 return (l->tab->Set_ptrcnt != NULL);
9e353e3b 1469 }
c7fc522f 1470 return 0;
760ac839
LW
1471}
1472
1473#undef PerlIO_get_base
888911fc 1474STDCHAR *
a20bf0c3 1475PerlIO_get_base(PerlIO *f)
760ac839 1476{
ba412a5d
JH
1477 if (f && *f)
1478 return (*PerlIOBase(f)->tab->Get_base)(f);
1479 return NULL;
9e353e3b
NIS
1480}
1481
1482#undef PerlIO_get_bufsiz
1483int
1484PerlIO_get_bufsiz(PerlIO *f)
1485{
ba412a5d
JH
1486 if (f && *f)
1487 return (*PerlIOBase(f)->tab->Get_bufsiz)(f);
1488 return 0;
9e353e3b
NIS
1489}
1490
1491#undef PerlIO_get_ptr
1492STDCHAR *
1493PerlIO_get_ptr(PerlIO *f)
1494{
5e2ab84b
NIS
1495 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1496 if (tab->Get_ptr == NULL)
1497 return NULL;
1498 return (*tab->Get_ptr)(f);
9e353e3b
NIS
1499}
1500
1501#undef PerlIO_get_cnt
05d1247b 1502int
9e353e3b
NIS
1503PerlIO_get_cnt(PerlIO *f)
1504{
5e2ab84b
NIS
1505 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1506 if (tab->Get_cnt == NULL)
1507 return 0;
1508 return (*tab->Get_cnt)(f);
9e353e3b
NIS
1509}
1510
1511#undef PerlIO_set_cnt
1512void
05d1247b 1513PerlIO_set_cnt(PerlIO *f,int cnt)
9e353e3b 1514{
f3862f8b 1515 (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt);
9e353e3b
NIS
1516}
1517
1518#undef PerlIO_set_ptrcnt
1519void
05d1247b 1520PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt)
9e353e3b 1521{
5e2ab84b
NIS
1522 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1523 if (tab->Set_ptrcnt == NULL)
1524 {
1525 dTHX;
1526 Perl_croak(aTHX_ "PerlIO buffer snooping abuse");
1527 }
f3862f8b 1528 (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt);
9e353e3b
NIS
1529}
1530
1531/*--------------------------------------------------------------------------------------*/
dfebf958
NIS
1532/* utf8 and raw dummy layers */
1533
26fb694e 1534IV
e3f3bf95 1535PerlIOUtf8_pushed(PerlIO *f, const char *mode, SV *arg)
26fb694e
NIS
1536{
1537 if (PerlIONext(f))
1538 {
a999f61b 1539 dTHX;
26fb694e 1540 PerlIO_funcs *tab = PerlIOBase(f)->tab;
a999f61b 1541 PerlIO_pop(aTHX_ f);
26fb694e
NIS
1542 if (tab->kind & PERLIO_K_UTF8)
1543 PerlIOBase(f)->flags |= PERLIO_F_UTF8;
1544 else
1545 PerlIOBase(f)->flags &= ~PERLIO_F_UTF8;
1546 return 0;
1547 }
1548 return -1;
1549}
1550
dfebf958
NIS
1551PerlIO_funcs PerlIO_utf8 = {
1552 "utf8",
1553 sizeof(PerlIOl),
26fb694e 1554 PERLIO_K_DUMMY|PERLIO_F_UTF8,
26fb694e
NIS
1555 PerlIOUtf8_pushed,
1556 NULL,
1557 NULL,
1558 NULL,
1559 NULL,
1560 NULL,
1561 NULL,
1562 NULL,
e3f3bf95
NIS
1563 NULL,
1564 NULL,
1565 NULL,
26fb694e
NIS
1566 NULL, /* flush */
1567 NULL, /* fill */
1568 NULL,
1569 NULL,
1570 NULL,
1571 NULL,
1572 NULL, /* get_base */
1573 NULL, /* get_bufsiz */
1574 NULL, /* get_ptr */
1575 NULL, /* get_cnt */
1576 NULL, /* set_ptrcnt */
1577};
1578
1579PerlIO_funcs PerlIO_byte = {
1580 "bytes",
1581 sizeof(PerlIOl),
1582 PERLIO_K_DUMMY,
dfebf958
NIS
1583 PerlIOUtf8_pushed,
1584 NULL,
1585 NULL,
1586 NULL,
1587 NULL,
1588 NULL,
1589 NULL,
1590 NULL,
e3f3bf95
NIS
1591 NULL,
1592 NULL,
1593 NULL,
dfebf958
NIS
1594 NULL, /* flush */
1595 NULL, /* fill */
1596 NULL,
1597 NULL,
1598 NULL,
1599 NULL,
1600 NULL, /* get_base */
1601 NULL, /* get_bufsiz */
1602 NULL, /* get_ptr */
1603 NULL, /* get_cnt */
1604 NULL, /* set_ptrcnt */
1605};
1606
1607PerlIO *
fcf2db38 1608PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n,const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args)
dfebf958 1609{
4b803d04 1610 PerlIO_funcs *tab = PerlIO_default_btm();
fcf2db38 1611 return (*tab->Open)(aTHX_ tab,layers,n-1,mode,fd,imode,perm,old,narg,args);
dfebf958
NIS
1612}
1613
1614PerlIO_funcs PerlIO_raw = {
1615 "raw",
1616 sizeof(PerlIOl),
4b803d04 1617 PERLIO_K_DUMMY,
dfebf958 1618 PerlIORaw_pushed,
26fb694e 1619 PerlIOBase_popped,
e3f3bf95
NIS
1620 PerlIORaw_open,
1621 NULL,
1622 NULL,
dfebf958
NIS
1623 NULL,
1624 NULL,
1625 NULL,
1626 NULL,
1627 NULL,
1628 NULL,
1629 NULL, /* flush */
1630 NULL, /* fill */
1631 NULL,
1632 NULL,
1633 NULL,
1634 NULL,
1635 NULL, /* get_base */
1636 NULL, /* get_bufsiz */
1637 NULL, /* get_ptr */
1638 NULL, /* get_cnt */
1639 NULL, /* set_ptrcnt */
1640};
1641/*--------------------------------------------------------------------------------------*/
1642/*--------------------------------------------------------------------------------------*/
9e353e3b
NIS
1643/* "Methods" of the "base class" */
1644
1645IV
1646PerlIOBase_fileno(PerlIO *f)
1647{
1648 return PerlIO_fileno(PerlIONext(f));
1649}
1650
f5b9d040
NIS
1651char *
1652PerlIO_modestr(PerlIO *f,char *buf)
1653{
1654 char *s = buf;
1655 IV flags = PerlIOBase(f)->flags;
5f1a76d0
NIS
1656 if (flags & PERLIO_F_APPEND)
1657 {
1658 *s++ = 'a';
1659 if (flags & PERLIO_F_CANREAD)
1660 {
1661 *s++ = '+';
1662 }
766a733e 1663 }
5f1a76d0
NIS
1664 else if (flags & PERLIO_F_CANREAD)
1665 {
1666 *s++ = 'r';
1667 if (flags & PERLIO_F_CANWRITE)
1668 *s++ = '+';
1669 }
1670 else if (flags & PERLIO_F_CANWRITE)
1671 {
1672 *s++ = 'w';
1673 if (flags & PERLIO_F_CANREAD)
1674 {
1675 *s++ = '+';
1676 }
1677 }
1678#if O_TEXT != O_BINARY
1679 if (!(flags & PERLIO_F_CRLF))
a4d3c1d3 1680 *s++ = 'b';
5f1a76d0 1681#endif
f5b9d040
NIS
1682 *s = '\0';
1683 return buf;
1684}
1685
76ced9ad 1686IV
e3f3bf95 1687PerlIOBase_pushed(PerlIO *f, const char *mode, SV *arg)
9e353e3b 1688{
76ced9ad 1689 PerlIOl *l = PerlIOBase(f);
b7953727 1690#if 0
f5b9d040
NIS
1691 const char *omode = mode;
1692 char temp[8];
b7953727 1693#endif
5e2ab84b 1694 PerlIO_funcs *tab = PerlIOBase(f)->tab;
76ced9ad 1695 l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|
f5b9d040 1696 PERLIO_F_TRUNCATE|PERLIO_F_APPEND);
5e2ab84b
NIS
1697 if (tab->Set_ptrcnt != NULL)
1698 l->flags |= PERLIO_F_FASTGETS;
76ced9ad 1699 if (mode)
6f9d8c32 1700 {
c5af4229
NIS
1701 if (*mode == '#' || *mode == 'I')
1702 mode++;
76ced9ad 1703 switch (*mode++)
06da4f11 1704 {
76ced9ad 1705 case 'r':
f5b9d040 1706 l->flags |= PERLIO_F_CANREAD;
76ced9ad
NIS
1707 break;
1708 case 'a':
f5b9d040 1709 l->flags |= PERLIO_F_APPEND|PERLIO_F_CANWRITE;
76ced9ad
NIS
1710 break;
1711 case 'w':
f5b9d040 1712 l->flags |= PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE;
76ced9ad
NIS
1713 break;
1714 default:
ba412a5d 1715 SETERRNO(EINVAL,LIB$_INVARG);
76ced9ad
NIS
1716 return -1;
1717 }
1718 while (*mode)
1719 {
1720 switch (*mode++)
1721 {
1722 case '+':
1723 l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE;
1724 break;
1725 case 'b':
f5b9d040
NIS
1726 l->flags &= ~PERLIO_F_CRLF;
1727 break;
1728 case 't':
1729 l->flags |= PERLIO_F_CRLF;
76ced9ad
NIS
1730 break;
1731 default:
ba412a5d
JH
1732 SETERRNO(EINVAL,LIB$_INVARG);
1733 return -1;
76ced9ad 1734 }
06da4f11 1735 }
6f9d8c32 1736 }
76ced9ad
NIS
1737 else
1738 {
1739 if (l->next)
1740 {
1741 l->flags |= l->next->flags &
f5b9d040 1742 (PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_TRUNCATE|PERLIO_F_APPEND);
76ced9ad
NIS
1743 }
1744 }
5e2ab84b 1745#if 0
4659c93f 1746 PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08"UVxf" (%s)\n",
f5b9d040 1747 f,PerlIOBase(f)->tab->name,(omode) ? omode : "(Null)",
a4d3c1d3 1748 l->flags,PerlIO_modestr(f,temp));
5e2ab84b 1749#endif
76ced9ad
NIS
1750 return 0;
1751}
1752
1753IV
1754PerlIOBase_popped(PerlIO *f)
1755{
1756 return 0;
760ac839
LW
1757}
1758
9e353e3b
NIS
1759SSize_t
1760PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count)
1761{
a999f61b 1762 dTHX;
9e353e3b 1763 Off_t old = PerlIO_tell(f);
72e44f29 1764 SSize_t done;
e3f3bf95 1765 PerlIO_push(aTHX_ f,&PerlIO_pending,"r",Nullsv);
72e44f29
NIS
1766 done = PerlIOBuf_unread(f,vbuf,count);
1767 PerlIOSelf(f,PerlIOBuf)->posn = old - done;
1768 return done;
9e353e3b
NIS
1769}
1770
f6c77cf1
NIS
1771SSize_t
1772PerlIOBase_read(PerlIO *f, void *vbuf, Size_t count)
1773{
1774 STDCHAR *buf = (STDCHAR *) vbuf;
1775 if (f)
1776 {
1777 if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD))
1778 return 0;
1779 while (count > 0)
1780 {
1781 SSize_t avail = PerlIO_get_cnt(f);
fb70fc7c
BS
1782 SSize_t take = 0;
1783 if (avail > 0)
1784 take = (count < avail) ? count : avail;
f6c77cf1
NIS
1785 if (take > 0)
1786 {
1787 STDCHAR *ptr = PerlIO_get_ptr(f);
1788 Copy(ptr,buf,take,STDCHAR);
1789 PerlIO_set_ptrcnt(f,ptr+take,(avail -= take));
1790 count -= take;
1791 buf += take;
1792 }
1793 if (count > 0 && avail <= 0)
1794 {
1795 if (PerlIO_fill(f) != 0)
1796 break;
1797 }
1798 }
1799 return (buf - (STDCHAR *) vbuf);
1800 }
1801 return 0;
1802}
1803
9e353e3b 1804IV
06da4f11 1805PerlIOBase_noop_ok(PerlIO *f)
9e353e3b
NIS
1806{
1807 return 0;
1808}
1809
1810IV
06da4f11
NIS
1811PerlIOBase_noop_fail(PerlIO *f)
1812{
1813 return -1;
1814}
1815
1816IV
9e353e3b
NIS
1817PerlIOBase_close(PerlIO *f)
1818{
1819 IV code = 0;
f5b9d040 1820 PerlIO *n = PerlIONext(f);
9e353e3b
NIS
1821 if (PerlIO_flush(f) != 0)
1822 code = -1;
f6c77cf1 1823 if (n && *n && (*PerlIOBase(n)->tab->Close)(n) != 0)
9e353e3b
NIS
1824 code = -1;
1825 PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN);
1826 return code;
1827}
1828
1829IV
1830PerlIOBase_eof(PerlIO *f)
1831{
1832 if (f && *f)
1833 {
1834 return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0;
1835 }
1836 return 1;
1837}
1838
1839IV
1840PerlIOBase_error(PerlIO *f)
1841{
1842 if (f && *f)
1843 {
1844 return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0;
1845 }
1846 return 1;
1847}
1848
1849void
1850PerlIOBase_clearerr(PerlIO *f)
1851{
1852 if (f && *f)
1853 {
f5b9d040
NIS
1854 PerlIO *n = PerlIONext(f);
1855 PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR|PERLIO_F_EOF);
1856 if (n)
1857 PerlIO_clearerr(n);
9e353e3b
NIS
1858 }
1859}
1860
1861void
1862PerlIOBase_setlinebuf(PerlIO *f)
1863{
f6c77cf1
NIS
1864 if (f)
1865 {
1866 PerlIOBase(f)->flags |= PERLIO_F_LINEBUF;
1867 }
9e353e3b
NIS
1868}
1869
9e353e3b
NIS
1870/*--------------------------------------------------------------------------------------*/
1871/* Bottom-most level for UNIX-like case */
1872
1873typedef struct
1874{
1875 struct _PerlIO base; /* The generic part */
1876 int fd; /* UNIX like file descriptor */
1877 int oflags; /* open/fcntl flags */
1878} PerlIOUnix;
1879
6f9d8c32 1880int
9e353e3b 1881PerlIOUnix_oflags(const char *mode)
760ac839 1882{
9e353e3b
NIS
1883 int oflags = -1;
1884 switch(*mode)
1885 {
1886 case 'r':
1887 oflags = O_RDONLY;
1888 if (*++mode == '+')
1889 {
1890 oflags = O_RDWR;
1891 mode++;
1892 }
1893 break;
1894
1895 case 'w':
1896 oflags = O_CREAT|O_TRUNC;
1897 if (*++mode == '+')
1898 {
1899 oflags |= O_RDWR;
1900 mode++;
1901 }
1902 else
1903 oflags |= O_WRONLY;
1904 break;
1905
1906 case 'a':
1907 oflags = O_CREAT|O_APPEND;
1908 if (*++mode == '+')
1909 {
1910 oflags |= O_RDWR;
1911 mode++;
1912 }
1913 else
1914 oflags |= O_WRONLY;
1915 break;
1916 }
83b075c3
NIS
1917 if (*mode == 'b')
1918 {
f5b9d040
NIS
1919 oflags |= O_BINARY;
1920 oflags &= ~O_TEXT;
1921 mode++;
1922 }
1923 else if (*mode == 't')
1924 {
1925 oflags |= O_TEXT;
1926 oflags &= ~O_BINARY;
60382766
NIS
1927 mode++;
1928 }
99efab12
NIS
1929 /* Always open in binary mode */
1930 oflags |= O_BINARY;
9e353e3b 1931 if (*mode || oflags == -1)
6f9d8c32 1932 {
ba412a5d 1933 SETERRNO(EINVAL,LIB$_INVARG);
9e353e3b 1934 oflags = -1;
6f9d8c32 1935 }
9e353e3b
NIS
1936 return oflags;
1937}
1938
1939IV
1940PerlIOUnix_fileno(PerlIO *f)
1941{
1942 return PerlIOSelf(f,PerlIOUnix)->fd;
1943}
1944
4b803d04 1945IV
e3f3bf95 1946PerlIOUnix_pushed(PerlIO *f, const char *mode, SV *arg)
4b803d04 1947{
e3f3bf95 1948 IV code = PerlIOBase_pushed(f,mode,arg);
4b803d04
NIS
1949 if (*PerlIONext(f))
1950 {
1951 PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix);
1952 s->fd = PerlIO_fileno(PerlIONext(f));
1953 s->oflags = PerlIOUnix_oflags(mode);
1954 }
1955 PerlIOBase(f)->flags |= PERLIO_F_OPEN;
1956 return code;
1957}
1958
9e353e3b 1959PerlIO *
fcf2db38 1960PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args)
9e353e3b 1961{
ee518936 1962 if (f)
9e353e3b 1963 {
ee518936
NIS
1964 if (PerlIOBase(f)->flags & PERLIO_F_OPEN)
1965 (*PerlIOBase(f)->tab->Close)(f);
1966 }
1967 if (narg > 0)
1968 {
1969 char *path = SvPV_nolen(*args);
1970 if (*mode == '#')
1971 mode++;
1972 else
9e353e3b 1973 {
ee518936
NIS
1974 imode = PerlIOUnix_oflags(mode);
1975 perm = 0666;
1976 }
1977 if (imode != -1)
1978 {
1979 fd = PerlLIO_open3(path,imode,perm);
9e353e3b
NIS
1980 }
1981 }
ee518936 1982 if (fd >= 0)
9e353e3b 1983 {
ee518936
NIS
1984 PerlIOUnix *s;
1985 if (*mode == 'I')
1986 mode++;
1987 if (!f)
9e353e3b 1988 {
ee518936 1989 f = PerlIO_allocate(aTHX);
f6c77cf1 1990 s = PerlIOSelf(PerlIO_push(aTHX_ f,self,mode,PerlIOArg),PerlIOUnix);
ee518936
NIS
1991 }
1992 else
1993 s = PerlIOSelf(f,PerlIOUnix);
1994 s->fd = fd;
1995 s->oflags = imode;
1996 PerlIOBase(f)->flags |= PERLIO_F_OPEN;
1997 return f;
1998 }
1999 else
2000 {
2001 if (f)
2002 {
2003 /* FIXME: pop layers ??? */
9e353e3b 2004 }
ee518936 2005 return NULL;
9e353e3b 2006 }
9e353e3b
NIS
2007}
2008
2009SSize_t
2010PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count)
2011{
adb71456 2012 dTHX;
9e353e3b 2013 int fd = PerlIOSelf(f,PerlIOUnix)->fd;
8f24bd79
NIS
2014 if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD))
2015 return 0;
9e353e3b
NIS
2016 while (1)
2017 {
00b02797 2018 SSize_t len = PerlLIO_read(fd,vbuf,count);
9e353e3b 2019 if (len >= 0 || errno != EINTR)
06da4f11
NIS
2020 {
2021 if (len < 0)
2022 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2023 else if (len == 0 && count != 0)
2024 PerlIOBase(f)->flags |= PERLIO_F_EOF;
2025 return len;
2026 }
0a8e0eff 2027 PERL_ASYNC_CHECK();
9e353e3b
NIS
2028 }
2029}
2030
2031SSize_t
2032PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count)
2033{
adb71456 2034 dTHX;
9e353e3b
NIS
2035 int fd = PerlIOSelf(f,PerlIOUnix)->fd;
2036 while (1)
2037 {
00b02797 2038 SSize_t len = PerlLIO_write(fd,vbuf,count);
9e353e3b 2039 if (len >= 0 || errno != EINTR)
06da4f11
NIS
2040 {
2041 if (len < 0)
2042 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2043 return len;
2044 }
0a8e0eff 2045 PERL_ASYNC_CHECK();
9e353e3b
NIS
2046 }
2047}
2048
2049IV
2050PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence)
2051{
92bff44d 2052 dSYS;
00b02797 2053 Off_t new = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence);
06da4f11 2054 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
9e353e3b
NIS
2055 return (new == (Off_t) -1) ? -1 : 0;
2056}
2057
2058Off_t
2059PerlIOUnix_tell(PerlIO *f)
2060{
7bcba3d4 2061 dSYS;
00b02797 2062 return PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR);
9e353e3b
NIS
2063}
2064
2065IV
2066PerlIOUnix_close(PerlIO *f)
2067{
adb71456 2068 dTHX;
9e353e3b
NIS
2069 int fd = PerlIOSelf(f,PerlIOUnix)->fd;
2070 int code = 0;
00b02797 2071 while (PerlLIO_close(fd) != 0)
9e353e3b
NIS
2072 {
2073 if (errno != EINTR)
2074 {
2075 code = -1;
2076 break;
2077 }
0a8e0eff 2078 PERL_ASYNC_CHECK();
9e353e3b
NIS
2079 }
2080 if (code == 0)
2081 {
2082 PerlIOBase(f)->flags &= ~PERLIO_F_OPEN;
2083 }
2084 return code;
2085}
2086
2087PerlIO_funcs PerlIO_unix = {
2088 "unix",
2089 sizeof(PerlIOUnix),
f5b9d040 2090 PERLIO_K_RAW,
4b803d04 2091 PerlIOUnix_pushed,
06da4f11 2092 PerlIOBase_noop_ok,
e3f3bf95
NIS
2093 PerlIOUnix_open,
2094 NULL,
2095 PerlIOUnix_fileno,
9e353e3b
NIS
2096 PerlIOUnix_read,
2097 PerlIOBase_unread,
2098 PerlIOUnix_write,
2099 PerlIOUnix_seek,
2100 PerlIOUnix_tell,
2101 PerlIOUnix_close,
76ced9ad
NIS
2102 PerlIOBase_noop_ok, /* flush */
2103 PerlIOBase_noop_fail, /* fill */
9e353e3b
NIS
2104 PerlIOBase_eof,
2105 PerlIOBase_error,
2106 PerlIOBase_clearerr,
2107 PerlIOBase_setlinebuf,
2108 NULL, /* get_base */
2109 NULL, /* get_bufsiz */
2110 NULL, /* get_ptr */
2111 NULL, /* get_cnt */
2112 NULL, /* set_ptrcnt */
2113};
2114
2115/*--------------------------------------------------------------------------------------*/
2116/* stdio as a layer */
2117
2118typedef struct
2119{
2120 struct _PerlIO base;
2121 FILE * stdio; /* The stream */
2122} PerlIOStdio;
2123
2124IV
2125PerlIOStdio_fileno(PerlIO *f)
2126{
7bcba3d4 2127 dSYS;
eaf8b698 2128 return PerlSIO_fileno(PerlIOSelf(f,PerlIOStdio)->stdio);
9e353e3b
NIS
2129}
2130
766a733e 2131char *
f5b9d040
NIS
2132PerlIOStdio_mode(const char *mode,char *tmode)
2133{
766a733e
NIS
2134 char *ret = tmode;
2135 while (*mode)
2136 {
2137 *tmode++ = *mode++;
2138 }
f5b9d040
NIS
2139 if (O_BINARY != O_TEXT)
2140 {
f5b9d040 2141 *tmode++ = 'b';
f5b9d040 2142 }
766a733e 2143 *tmode = '\0';
f5b9d040
NIS
2144 return ret;
2145}
9e353e3b 2146
4b803d04
NIS
2147/* This isn't used yet ... */
2148IV
e3f3bf95 2149PerlIOStdio_pushed(PerlIO *f, const char *mode, SV *arg)
4b803d04
NIS
2150{
2151 if (*PerlIONext(f))
2152 {
7bcba3d4 2153 dSYS;
4b803d04
NIS
2154 PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio);
2155 char tmode[8];
2156 FILE *stdio = PerlSIO_fdopen(PerlIO_fileno(PerlIONext(f)),mode = PerlIOStdio_mode(mode,tmode));
2157 if (stdio)
2158 s->stdio = stdio;
2159 else
2160 return -1;
2161 }
e3f3bf95 2162 return PerlIOBase_pushed(f,mode,arg);
4b803d04
NIS
2163}
2164
9e353e3b
NIS
2165#undef PerlIO_importFILE
2166PerlIO *
2167PerlIO_importFILE(FILE *stdio, int fl)
2168{
5f1a76d0 2169 dTHX;
9e353e3b
NIS
2170 PerlIO *f = NULL;
2171 if (stdio)
2172 {
e3f3bf95 2173 PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),&PerlIO_stdio,"r+",Nullsv),PerlIOStdio);
9e353e3b
NIS
2174 s->stdio = stdio;
2175 }
2176 return f;
2177}
2178
2179PerlIO *
fcf2db38 2180PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args)
9e353e3b 2181{
ee518936
NIS
2182 char tmode[8];
2183 if (f)
9e353e3b 2184 {
ee518936
NIS
2185 char *path = SvPV_nolen(*args);
2186 PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio);
2187 FILE *stdio = PerlSIO_freopen(path,(mode = PerlIOStdio_mode(mode,tmode)),s->stdio);
2188 if (!s->stdio)
2189 return NULL;
2190 s->stdio = stdio;
2191 return f;
9e353e3b 2192 }
ee518936
NIS
2193 else
2194 {
2195 if (narg > 0)
2196 {
2197 char *path = SvPV_nolen(*args);
2198 if (*mode == '#')
2199 {
2200 mode++;
2201 fd = PerlLIO_open3(path,imode,perm);
2202 }
2203 else
2204 {
2205 FILE *stdio = PerlSIO_fopen(path,mode);
2206 if (stdio)
2207 {
a999f61b 2208 PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)), self,
f6c77cf1 2209 (mode = PerlIOStdio_mode(mode,tmode)),PerlIOArg),
ee518936
NIS
2210 PerlIOStdio);
2211 s->stdio = stdio;
2212 }
2213 return f;
2214 }
2215 }
2216 if (fd >= 0)
2217 {
2218 FILE *stdio = NULL;
2219 int init = 0;
2220 if (*mode == 'I')
2221 {
2222 init = 1;
2223 mode++;
2224 }
2225 if (init)
2226 {
2227 switch(fd)
2228 {
2229 case 0:
2230 stdio = PerlSIO_stdin;
2231 break;
2232 case 1:
2233 stdio = PerlSIO_stdout;
2234 break;
2235 case 2:
2236 stdio = PerlSIO_stderr;
2237 break;
2238 }
2239 }
2240 else
2241 {
2242 stdio = PerlSIO_fdopen(fd,mode = PerlIOStdio_mode(mode,tmode));
2243 }
2244 if (stdio)
2245 {
f6c77cf1 2246 PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),self,mode,PerlIOArg),PerlIOStdio);
ee518936
NIS
2247 s->stdio = stdio;
2248 return f;
2249 }
2250 }
2251 }
2252 return NULL;
9e353e3b
NIS
2253}
2254
2255SSize_t
2256PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count)
2257{
7bcba3d4 2258 dSYS;
9e353e3b 2259 FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio;
c7fc522f 2260 SSize_t got = 0;
9e353e3b
NIS
2261 if (count == 1)
2262 {
2263 STDCHAR *buf = (STDCHAR *) vbuf;
2264 /* Perl is expecting PerlIO_getc() to fill the buffer
2265 * Linux's stdio does not do that for fread()
2266 */
eaf8b698 2267 int ch = PerlSIO_fgetc(s);
9e353e3b
NIS
2268 if (ch != EOF)
2269 {
2270 *buf = ch;
c7fc522f 2271 got = 1;
9e353e3b 2272 }
9e353e3b 2273 }
c7fc522f 2274 else
eaf8b698 2275 got = PerlSIO_fread(vbuf,1,count,s);
c7fc522f 2276 return got;
9e353e3b
NIS
2277}
2278
2279SSize_t
2280PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count)
2281{
7bcba3d4 2282 dSYS;
9e353e3b
NIS
2283 FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio;
2284 STDCHAR *buf = ((STDCHAR *)vbuf)+count-1;
2285 SSize_t unread = 0;
2286 while (count > 0)
2287 {
2288 int ch = *buf-- & 0xff;
eaf8b698 2289 if (PerlSIO_ungetc(ch,s) != ch)
9e353e3b
NIS
2290 break;
2291 unread++;
2292 count--;
2293 }
2294 return unread;
2295}
2296
2297SSize_t
2298PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count)
2299{
7bcba3d4 2300 dSYS;
eaf8b698 2301 return PerlSIO_fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio);
9e353e3b
NIS
2302}
2303
2304IV
2305PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence)
2306{
7bcba3d4 2307 dSYS;
c7fc522f 2308 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
eaf8b698 2309 return PerlSIO_fseek(stdio,offset,whence);
9e353e3b
NIS
2310}
2311
2312Off_t
2313PerlIOStdio_tell(PerlIO *f)
2314{
7bcba3d4 2315 dSYS;
c7fc522f 2316 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
eaf8b698 2317 return PerlSIO_ftell(stdio);
9e353e3b
NIS
2318}
2319
2320IV
2321PerlIOStdio_close(PerlIO *f)
2322{
7bcba3d4 2323 dSYS;
af130d45 2324#ifdef SOCKS5_VERSION_NAME
af489807
JH
2325 int optval;
2326 Sock_size_t optlen = sizeof(int);
8e4bc33b 2327#endif
3789aae2 2328 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
cf829ab0 2329 return(
af130d45 2330#ifdef SOCKS5_VERSION_NAME
af489807 2331 (getsockopt(PerlIO_fileno(f), SOL_SOCKET, SO_TYPE, (void *)&optval, &optlen) < 0) ?
eaf8b698 2332 PerlSIO_fclose(stdio) :
8e4bc33b
YST
2333 close(PerlIO_fileno(f))
2334#else
2335 PerlSIO_fclose(stdio)
2336#endif
2337 );
2338
9e353e3b
NIS
2339}
2340
2341IV
2342PerlIOStdio_flush(PerlIO *f)
2343{
7bcba3d4 2344 dSYS;
9e353e3b 2345 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
88b61e10
NIS
2346 if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE)
2347 {
eaf8b698 2348 return PerlSIO_fflush(stdio);
88b61e10
NIS
2349 }
2350 else
2351 {
2352#if 0
2353 /* FIXME: This discards ungetc() and pre-read stuff which is
2354 not right if this is just a "sync" from a layer above
2355 Suspect right design is to do _this_ but not have layer above
2356 flush this layer read-to-read
2357 */
2358 /* Not writeable - sync by attempting a seek */
2359 int err = errno;
eaf8b698 2360 if (PerlSIO_fseek(stdio,(Off_t) 0, SEEK_CUR) != 0)
88b61e10
NIS
2361 errno = err;
2362#endif
2363 }
2364 return 0;
9e353e3b
NIS
2365}
2366
2367IV
06da4f11
NIS
2368PerlIOStdio_fill(PerlIO *f)
2369{
7bcba3d4 2370 dSYS;
06da4f11
NIS
2371 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
2372 int c;
3789aae2
NIS
2373 /* fflush()ing read-only streams can cause trouble on some stdio-s */
2374 if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE))
2375 {
eaf8b698 2376 if (PerlSIO_fflush(stdio) != 0)
3789aae2
NIS
2377 return EOF;
2378 }
eaf8b698
NIS
2379 c = PerlSIO_fgetc(stdio);
2380 if (c == EOF || PerlSIO_ungetc(c,stdio) != c)
06da4f11
NIS
2381 return EOF;
2382 return 0;
2383}
2384
2385IV
9e353e3b
NIS
2386PerlIOStdio_eof(PerlIO *f)
2387{
7bcba3d4 2388 dSYS;
eaf8b698 2389 return PerlSIO_feof(PerlIOSelf(f,PerlIOStdio)->stdio);
9e353e3b
NIS
2390}
2391
2392IV
2393PerlIOStdio_error(PerlIO *f)
2394{
7bcba3d4 2395 dSYS;
eaf8b698 2396 return PerlSIO_ferror(PerlIOSelf(f,PerlIOStdio)->stdio);
9e353e3b
NIS
2397}
2398
2399void
2400PerlIOStdio_clearerr(PerlIO *f)
2401{
7bcba3d4 2402 dSYS;
eaf8b698 2403 PerlSIO_clearerr(PerlIOSelf(f,PerlIOStdio)->stdio);
9e353e3b
NIS
2404}
2405
2406void
2407PerlIOStdio_setlinebuf(PerlIO *f)
2408{
7bcba3d4 2409 dSYS;
9e353e3b 2410#ifdef HAS_SETLINEBUF
eaf8b698 2411 PerlSIO_setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio);
9e353e3b 2412#else
eaf8b698 2413 PerlSIO_setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0);
9e353e3b
NIS
2414#endif
2415}
2416
2417#ifdef FILE_base
2418STDCHAR *
2419PerlIOStdio_get_base(PerlIO *f)
2420{
7bcba3d4 2421 dSYS;
9e353e3b 2422 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
eaf8b698 2423 return PerlSIO_get_base(stdio);
9e353e3b
NIS
2424}
2425
2426Size_t
2427PerlIOStdio_get_bufsiz(PerlIO *f)
2428{
7bcba3d4 2429 dSYS;
9e353e3b 2430 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
eaf8b698 2431 return PerlSIO_get_bufsiz(stdio);
9e353e3b
NIS
2432}
2433#endif
2434
2435#ifdef USE_STDIO_PTR
2436STDCHAR *
2437PerlIOStdio_get_ptr(PerlIO *f)
2438{
7bcba3d4 2439 dSYS;
9e353e3b 2440 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
eaf8b698 2441 return PerlSIO_get_ptr(stdio);
9e353e3b
NIS
2442}
2443
2444SSize_t
2445PerlIOStdio_get_cnt(PerlIO *f)
2446{
7bcba3d4 2447 dSYS;
9e353e3b 2448 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
eaf8b698 2449 return PerlSIO_get_cnt(stdio);
9e353e3b
NIS
2450}
2451
2452void
2453PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt)
2454{
2455 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
7bcba3d4 2456 dSYS;
9e353e3b
NIS
2457 if (ptr != NULL)
2458 {
2459#ifdef STDIO_PTR_LVALUE
eaf8b698 2460 PerlSIO_set_ptr(stdio,ptr);
9e353e3b 2461#ifdef STDIO_PTR_LVAL_SETS_CNT
eaf8b698 2462 if (PerlSIO_get_cnt(stdio) != (cnt))
9e353e3b
NIS
2463 {
2464 dTHX;
eaf8b698 2465 assert(PerlSIO_get_cnt(stdio) == (cnt));
9e353e3b
NIS
2466 }
2467#endif
2468#if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT))
2469 /* Setting ptr _does_ change cnt - we are done */
2470 return;
2471#endif
2472#else /* STDIO_PTR_LVALUE */
eaf8b698 2473 PerlProc_abort();
9e353e3b
NIS
2474#endif /* STDIO_PTR_LVALUE */
2475 }
2476/* Now (or only) set cnt */
2477#ifdef STDIO_CNT_LVALUE
eaf8b698 2478 PerlSIO_set_cnt(stdio,cnt);
9e353e3b
NIS
2479#else /* STDIO_CNT_LVALUE */
2480#if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT))
eaf8b698 2481 PerlSIO_set_ptr(stdio,PerlSIO_get_ptr(stdio)+(PerlSIO_get_cnt(stdio)-cnt));
9e353e3b 2482#else /* STDIO_PTR_LVAL_SETS_CNT */
eaf8b698 2483 PerlProc_abort();
9e353e3b
NIS
2484#endif /* STDIO_PTR_LVAL_SETS_CNT */
2485#endif /* STDIO_CNT_LVALUE */
2486}
2487
2488#endif
2489
2490PerlIO_funcs PerlIO_stdio = {
2491 "stdio",
2492 sizeof(PerlIOStdio),
f5b9d040 2493 PERLIO_K_BUFFERED,
06da4f11
NIS
2494 PerlIOBase_pushed,
2495 PerlIOBase_noop_ok,
e3f3bf95
NIS
2496 PerlIOStdio_open,
2497 NULL,
2498 PerlIOStdio_fileno,
9e353e3b
NIS
2499 PerlIOStdio_read,
2500 PerlIOStdio_unread,
2501 PerlIOStdio_write,
2502 PerlIOStdio_seek,
2503 PerlIOStdio_tell,
2504 PerlIOStdio_close,
2505 PerlIOStdio_flush,
06da4f11 2506 PerlIOStdio_fill,
9e353e3b
NIS
2507 PerlIOStdio_eof,
2508 PerlIOStdio_error,
2509 PerlIOStdio_clearerr,
2510 PerlIOStdio_setlinebuf,
2511#ifdef FILE_base
2512 PerlIOStdio_get_base,
2513 PerlIOStdio_get_bufsiz,
2514#else
2515 NULL,
2516 NULL,
2517#endif
2518#ifdef USE_STDIO_PTR
2519 PerlIOStdio_get_ptr,
2520 PerlIOStdio_get_cnt,
0eb1d8a4 2521#if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT)))
9e353e3b
NIS
2522 PerlIOStdio_set_ptrcnt
2523#else /* STDIO_PTR_LVALUE */
2524 NULL
2525#endif /* STDIO_PTR_LVALUE */
2526#else /* USE_STDIO_PTR */
2527 NULL,
2528 NULL,
2529 NULL
2530#endif /* USE_STDIO_PTR */
2531};
2532
2533#undef PerlIO_exportFILE
2534FILE *
2535PerlIO_exportFILE(PerlIO *f, int fl)
2536{
f7e7eb72 2537 FILE *stdio;
9e353e3b 2538 PerlIO_flush(f);
f7e7eb72
NIS
2539 stdio = fdopen(PerlIO_fileno(f),"r+");
2540 if (stdio)
2541 {
a999f61b 2542 dTHX;
e3f3bf95 2543 PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ f,&PerlIO_stdio,"r+",Nullsv),PerlIOStdio);
f7e7eb72
NIS
2544 s->stdio = stdio;
2545 }
2546 return stdio;
9e353e3b
NIS
2547}
2548
2549#undef PerlIO_findFILE
2550FILE *
2551PerlIO_findFILE(PerlIO *f)
2552{
f7e7eb72
NIS
2553 PerlIOl *l = *f;
2554 while (l)
2555 {
2556 if (l->tab == &PerlIO_stdio)
2557 {
2558 PerlIOStdio *s = PerlIOSelf(&l,PerlIOStdio);
2559 return s->stdio;
2560 }
2561 l = *PerlIONext(&l);
2562 }
9e353e3b
NIS
2563 return PerlIO_exportFILE(f,0);
2564}
2565
2566#undef PerlIO_releaseFILE
2567void
2568PerlIO_releaseFILE(PerlIO *p, FILE *f)
2569{
2570}
2571
2572/*--------------------------------------------------------------------------------------*/
2573/* perlio buffer layer */
2574
5e2ab84b 2575IV
e3f3bf95 2576PerlIOBuf_pushed(PerlIO *f, const char *mode, SV *arg)
5e2ab84b 2577{
7bcba3d4 2578 dSYS;
5e2ab84b 2579 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
1f474064
NIS
2580 int fd = PerlIO_fileno(f);
2581 Off_t posn;
2582 if (fd >= 0 && PerlLIO_isatty(fd))
2583 {
a9c883f6 2584 PerlIOBase(f)->flags |= PERLIO_F_LINEBUF|PERLIO_F_TTY;
1f474064
NIS
2585 }
2586 posn = PerlIO_tell(PerlIONext(f));
2587 if (posn != (Off_t) -1)
2588 {
2589 b->posn = posn;
2590 }
e3f3bf95 2591 return PerlIOBase_pushed(f,mode,arg);
5e2ab84b
NIS
2592}
2593
9e353e3b 2594PerlIO *
fcf2db38 2595PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args)
9e353e3b 2596{
6f9d8c32
NIS
2597 if (f)
2598 {
ee518936 2599 PerlIO *next = PerlIONext(f);
fcf2db38
NIS
2600 PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n-1, PerlIOBase(next)->tab);
2601 next = (*tab->Open)(aTHX_ tab, layers, n-1, mode,fd,imode,perm,next,narg,args);
f6c77cf1 2602 if (!next || (*PerlIOBase(f)->tab->Pushed)(f,mode,PerlIOArg) != 0)
c7fc522f 2603 {
ee518936 2604 return NULL;
a4d3c1d3 2605 }
6f9d8c32 2606 }
ee518936 2607 else
9e353e3b 2608 {
fcf2db38 2609 PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n-1, PerlIO_default_btm());
ee518936
NIS
2610 int init = 0;
2611 if (*mode == 'I')
2612 {
2613 init = 1;
2614 mode++;
2615 }
fcf2db38 2616 f = (*tab->Open)(aTHX_ tab, layers, n-1, mode,fd,imode,perm,NULL,narg,args);
ee518936
NIS
2617 if (f)
2618 {
b7953727 2619 PerlIO_push(aTHX_ f,self,mode,PerlIOArg);
ee518936
NIS
2620 fd = PerlIO_fileno(f);
2621#if O_BINARY != O_TEXT
2622 /* do something about failing setmode()? --jhi */
2623 PerlLIO_setmode(fd , O_BINARY);
2624#endif
2625 if (init && fd == 2)
2626 {
2627 /* Initial stderr is unbuffered */
2628 PerlIOBase(f)->flags |= PERLIO_F_UNBUF;
2629 }
2630 }
9e353e3b
NIS
2631 }
2632 return f;
2633}
2634
9e353e3b
NIS
2635/* This "flush" is akin to sfio's sync in that it handles files in either
2636 read or write state
2637*/
2638IV
2639PerlIOBuf_flush(PerlIO *f)
6f9d8c32 2640{
9e353e3b
NIS
2641 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2642 int code = 0;
2643 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
2644 {
2645 /* write() the buffer */
a5262162 2646 STDCHAR *buf = b->buf;
33af2bc7 2647 STDCHAR *p = buf;
3789aae2 2648 PerlIO *n = PerlIONext(f);
9e353e3b
NIS
2649 while (p < b->ptr)
2650 {
4b803d04 2651 SSize_t count = PerlIO_write(n,p,b->ptr - p);
9e353e3b
NIS
2652 if (count > 0)
2653 {
2654 p += count;
2655 }
3789aae2 2656 else if (count < 0 || PerlIO_error(n))
9e353e3b
NIS
2657 {
2658 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2659 code = -1;
2660 break;
2661 }
2662 }
33af2bc7 2663 b->posn += (p - buf);
9e353e3b
NIS
2664 }
2665 else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF)
6f9d8c32 2666 {
33af2bc7 2667 STDCHAR *buf = PerlIO_get_base(f);
9e353e3b 2668 /* Note position change */
33af2bc7 2669 b->posn += (b->ptr - buf);
9e353e3b
NIS
2670 if (b->ptr < b->end)
2671 {
2672 /* We did not consume all of it */
2673 if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0)
2674 {
2675 b->posn = PerlIO_tell(PerlIONext(f));
2676 }
2677 }
6f9d8c32 2678 }
9e353e3b
NIS
2679 b->ptr = b->end = b->buf;
2680 PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF);
88b61e10 2681 /* FIXME: Is this right for read case ? */
9e353e3b
NIS
2682 if (PerlIO_flush(PerlIONext(f)) != 0)
2683 code = -1;
2684 return code;
6f9d8c32
NIS
2685}
2686
06da4f11
NIS
2687IV
2688PerlIOBuf_fill(PerlIO *f)
2689{
2690 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
88b61e10 2691 PerlIO *n = PerlIONext(f);
06da4f11 2692 SSize_t avail;
88b61e10
NIS
2693 /* FIXME: doing the down-stream flush is a bad idea if it causes
2694 pre-read data in stdio buffer to be discarded
2695 but this is too simplistic - as it skips _our_ hosekeeping
2696 and breaks tell tests.
2697 if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF))
2698 {
2699 }
2700 */
06da4f11
NIS
2701 if (PerlIO_flush(f) != 0)
2702 return -1;
a9c883f6
NIS
2703 if (PerlIOBase(f)->flags & PERLIO_F_TTY)
2704 PerlIOBase_flush_linebuf();
88b61e10 2705
a5262162
NIS
2706 if (!b->buf)
2707 PerlIO_get_base(f); /* allocate via vtable */
2708
2709 b->ptr = b->end = b->buf;
88b61e10
NIS
2710 if (PerlIO_fast_gets(n))
2711 {
2712 /* Layer below is also buffered
2713 * We do _NOT_ want to call its ->Read() because that will loop
2714 * till it gets what we asked for which may hang on a pipe etc.
2715 * Instead take anything it has to hand, or ask it to fill _once_.
2716 */
2717 avail = PerlIO_get_cnt(n);
2718 if (avail <= 0)
2719 {
2720 avail = PerlIO_fill(n);
2721 if (avail == 0)
2722 avail = PerlIO_get_cnt(n);
2723 else
2724 {
2725 if (!PerlIO_error(n) && PerlIO_eof(n))
2726 avail = 0;
2727 }
2728 }
2729 if (avail > 0)
2730 {
2731 STDCHAR *ptr = PerlIO_get_ptr(n);
2732 SSize_t cnt = avail;
2733 if (avail > b->bufsiz)
2734 avail = b->bufsiz;
2735 Copy(ptr,b->buf,avail,STDCHAR);
2736 PerlIO_set_ptrcnt(n,ptr+avail,cnt-avail);
2737 }
2738 }
2739 else
2740 {
2741 avail = PerlIO_read(n,b->ptr,b->bufsiz);
2742 }
06da4f11
NIS
2743 if (avail <= 0)
2744 {
2745 if (avail == 0)
2746 PerlIOBase(f)->flags |= PERLIO_F_EOF;
2747 else
2748 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2749 return -1;
2750 }
a5262162 2751 b->end = b->buf+avail;
06da4f11
NIS
2752 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
2753 return 0;
2754}
2755
6f9d8c32 2756SSize_t
9e353e3b 2757PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count)
6f9d8c32 2758{
99efab12 2759 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
6f9d8c32
NIS
2760 if (f)
2761 {
9e353e3b 2762 if (!b->ptr)
06da4f11 2763 PerlIO_get_base(f);
f6c77cf1 2764 return PerlIOBase_read(f,vbuf,count);
6f9d8c32
NIS
2765 }
2766 return 0;
2767}
2768
9e353e3b
NIS
2769SSize_t
2770PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count)
760ac839 2771{
9e353e3b
NIS
2772 const STDCHAR *buf = (const STDCHAR *) vbuf+count;
2773 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2774 SSize_t unread = 0;
2775 SSize_t avail;
9e353e3b
NIS
2776 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
2777 PerlIO_flush(f);
06da4f11
NIS
2778 if (!b->buf)
2779 PerlIO_get_base(f);
9e353e3b
NIS
2780 if (b->buf)
2781 {
2782 if (PerlIOBase(f)->flags & PERLIO_F_RDBUF)
2783 {
2784 avail = (b->ptr - b->buf);
9e353e3b
NIS
2785 }
2786 else
2787 {
2788 avail = b->bufsiz;
5e2ab84b
NIS
2789 b->end = b->buf + avail;
2790 b->ptr = b->end;
2791 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
2792 b->posn -= b->bufsiz;
9e353e3b 2793 }
5e2ab84b
NIS
2794 if (avail > (SSize_t) count)
2795 avail = count;
9e353e3b
NIS
2796 if (avail > 0)
2797 {
5e2ab84b 2798 b->ptr -= avail;
9e353e3b
NIS
2799 buf -= avail;
2800 if (buf != b->ptr)
2801 {
88b61e10 2802 Copy(buf,b->ptr,avail,STDCHAR);
9e353e3b
NIS
2803 }
2804 count -= avail;
2805 unread += avail;
2806 PerlIOBase(f)->flags &= ~ PERLIO_F_EOF;
2807 }
2808 }
2809 return unread;
760ac839
LW
2810}
2811
9e353e3b
NIS
2812SSize_t
2813PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count)
760ac839 2814{
9e353e3b
NIS
2815 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2816 const STDCHAR *buf = (const STDCHAR *) vbuf;
2817 Size_t written = 0;
2818 if (!b->buf)
06da4f11 2819 PerlIO_get_base(f);
9e353e3b
NIS
2820 if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE))
2821 return 0;
2822 while (count > 0)
2823 {
2824 SSize_t avail = b->bufsiz - (b->ptr - b->buf);
2825 if ((SSize_t) count < avail)
2826 avail = count;
2827 PerlIOBase(f)->flags |= PERLIO_F_WRBUF;
2828 if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF)
2829 {
2830 while (avail > 0)
2831 {
2832 int ch = *buf++;
2833 *(b->ptr)++ = ch;
2834 count--;
2835 avail--;
2836 written++;
2837 if (ch == '\n')
2838 {
2839 PerlIO_flush(f);
2840 break;
2841 }
2842 }
2843 }
2844 else
2845 {
2846 if (avail)
2847 {
88b61e10 2848 Copy(buf,b->ptr,avail,STDCHAR);
9e353e3b
NIS
2849 count -= avail;
2850 buf += avail;
2851 written += avail;
2852 b->ptr += avail;
2853 }
2854 }
2855 if (b->ptr >= (b->buf + b->bufsiz))
2856 PerlIO_flush(f);
2857 }
f5b9d040
NIS
2858 if (PerlIOBase(f)->flags & PERLIO_F_UNBUF)
2859 PerlIO_flush(f);
9e353e3b
NIS
2860 return written;
2861}
2862
2863IV
2864PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence)
2865{
5e2ab84b
NIS
2866 IV code;
2867 if ((code = PerlIO_flush(f)) == 0)
9e353e3b 2868 {
5e2ab84b 2869 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
9e353e3b
NIS
2870 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
2871 code = PerlIO_seek(PerlIONext(f),offset,whence);
2872 if (code == 0)
2873 {
2874 b->posn = PerlIO_tell(PerlIONext(f));
2875 }
2876 }
2877 return code;
2878}
2879
2880Off_t
2881PerlIOBuf_tell(PerlIO *f)
2882{
2883 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2884 Off_t posn = b->posn;
2885 if (b->buf)
2886 posn += (b->ptr - b->buf);
2887 return posn;
2888}
2889
2890IV
2891PerlIOBuf_close(PerlIO *f)
2892{
2893 IV code = PerlIOBase_close(f);
2894 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2895 if (b->buf && b->buf != (STDCHAR *) &b->oneword)
6f9d8c32 2896 {
5f1a76d0 2897 PerlMemShared_free(b->buf);
6f9d8c32 2898 }
9e353e3b
NIS
2899 b->buf = NULL;
2900 b->ptr = b->end = b->buf;
2901 PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF);
2902 return code;
760ac839
LW
2903}
2904
9e353e3b
NIS
2905STDCHAR *
2906PerlIOBuf_get_ptr(PerlIO *f)
2907{
2908 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2909 if (!b->buf)
06da4f11 2910 PerlIO_get_base(f);
9e353e3b
NIS
2911 return b->ptr;
2912}
2913
05d1247b 2914SSize_t
9e353e3b
NIS
2915PerlIOBuf_get_cnt(PerlIO *f)
2916{
2917 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2918 if (!b->buf)
06da4f11 2919 PerlIO_get_base(f);
9e353e3b
NIS
2920 if (PerlIOBase(f)->flags & PERLIO_F_RDBUF)
2921 return (b->end - b->ptr);
2922 return 0;
2923}
2924
2925STDCHAR *
2926PerlIOBuf_get_base(PerlIO *f)
2927{
2928 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2929 if (!b->buf)
06da4f11
NIS
2930 {
2931 if (!b->bufsiz)
2932 b->bufsiz = 4096;
5f1a76d0 2933 b->buf = PerlMemShared_calloc(b->bufsiz,sizeof(STDCHAR));
06da4f11
NIS
2934 if (!b->buf)
2935 {
2936 b->buf = (STDCHAR *)&b->oneword;
2937 b->bufsiz = sizeof(b->oneword);
2938 }
2939 b->ptr = b->buf;
2940 b->end = b->ptr;
2941 }
9e353e3b
NIS
2942 return b->buf;
2943}
2944
2945Size_t
2946PerlIOBuf_bufsiz(PerlIO *f)
2947{
2948 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2949 if (!b->buf)
06da4f11 2950 PerlIO_get_base(f);
9e353e3b
NIS
2951 return (b->end - b->buf);
2952}
2953
2954void
05d1247b 2955PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt)
9e353e3b
NIS
2956{
2957 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
2958 if (!b->buf)
06da4f11 2959 PerlIO_get_base(f);
9e353e3b
NIS
2960 b->ptr = ptr;
2961 if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf)
6f9d8c32 2962 {
9e353e3b
NIS
2963 dTHX;
2964 assert(PerlIO_get_cnt(f) == cnt);
2965 assert(b->ptr >= b->buf);
6f9d8c32 2966 }
9e353e3b 2967 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
760ac839
LW
2968}
2969
9e353e3b
NIS
2970PerlIO_funcs PerlIO_perlio = {
2971 "perlio",
2972 sizeof(PerlIOBuf),
f5b9d040 2973 PERLIO_K_BUFFERED,
5e2ab84b 2974 PerlIOBuf_pushed,
06da4f11 2975 PerlIOBase_noop_ok,
e3f3bf95
NIS
2976 PerlIOBuf_open,
2977 NULL,
2978 PerlIOBase_fileno,
9e353e3b
NIS
2979 PerlIOBuf_read,
2980 PerlIOBuf_unread,
2981 PerlIOBuf_write,
2982 PerlIOBuf_seek,
2983 PerlIOBuf_tell,
2984 PerlIOBuf_close,
2985 PerlIOBuf_flush,
06da4f11 2986 PerlIOBuf_fill,
9e353e3b
NIS
2987 PerlIOBase_eof,
2988 PerlIOBase_error,
2989 PerlIOBase_clearerr,
f6c77cf1 2990 PerlIOBase_setlinebuf,
9e353e3b
NIS
2991 PerlIOBuf_get_base,
2992 PerlIOBuf_bufsiz,
2993 PerlIOBuf_get_ptr,
2994 PerlIOBuf_get_cnt,
2995 PerlIOBuf_set_ptrcnt,
2996};
2997
66ecd56b 2998/*--------------------------------------------------------------------------------------*/
5e2ab84b
NIS
2999/* Temp layer to hold unread chars when cannot do it any other way */
3000
3001IV
3002PerlIOPending_fill(PerlIO *f)
3003{
3004 /* Should never happen */
3005 PerlIO_flush(f);
3006 return 0;
3007}
3008
3009IV
3010PerlIOPending_close(PerlIO *f)
3011{
3012 /* A tad tricky - flush pops us, then we close new top */
3013 PerlIO_flush(f);
3014 return PerlIO_close(f);
3015}
3016
3017IV
3018PerlIOPending_seek(PerlIO *f, Off_t offset, int whence)
3019{
3020 /* A tad tricky - flush pops us, then we seek new top */
3021 PerlIO_flush(f);
3022 return PerlIO_seek(f,offset,whence);
3023}
3024
3025
3026IV
3027PerlIOPending_flush(PerlIO *f)
3028{
a999f61b 3029 dTHX;
5e2ab84b
NIS
3030 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
3031 if (b->buf && b->buf != (STDCHAR *) &b->oneword)
3032 {
5f1a76d0 3033 PerlMemShared_free(b->buf);
5e2ab84b
NIS
3034 b->buf = NULL;
3035 }
a999f61b 3036 PerlIO_pop(aTHX_ f);
5e2ab84b
NIS
3037 return 0;
3038}
3039
3040void
3041PerlIOPending_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt)
3042{
3043 if (cnt <= 0)
3044 {
3045 PerlIO_flush(f);
3046 }
3047 else
3048 {
3049 PerlIOBuf_set_ptrcnt(f,ptr,cnt);
3050 }
3051}
3052
3053IV
e3f3bf95 3054PerlIOPending_pushed(PerlIO *f,const char *mode,SV *arg)
5e2ab84b 3055{
e3f3bf95 3056 IV code = PerlIOBase_pushed(f,mode,arg);
5e2ab84b
NIS
3057 PerlIOl *l = PerlIOBase(f);
3058 /* Our PerlIO_fast_gets must match what we are pushed on,
3059 or sv_gets() etc. get muddled when it changes mid-string
3060 when we auto-pop.
3061 */
72e44f29
NIS
3062 l->flags = (l->flags & ~(PERLIO_F_FASTGETS|PERLIO_F_UTF8)) |
3063 (PerlIOBase(PerlIONext(f))->flags & (PERLIO_F_FASTGETS|PERLIO_F_UTF8));
5e2ab84b
NIS
3064 return code;
3065}
3066
3067SSize_t
3068PerlIOPending_read(PerlIO *f, void *vbuf, Size_t count)
3069{
3070 SSize_t avail = PerlIO_get_cnt(f);
3071 SSize_t got = 0;
3072 if (count < avail)
3073 avail = count;
3074 if (avail > 0)
3075 got = PerlIOBuf_read(f,vbuf,avail);
1f474064
NIS
3076 if (got >= 0 && got < count)
3077 {
3078 SSize_t more = PerlIO_read(f,((STDCHAR *) vbuf)+got,count-got);
3079 if (more >= 0 || got == 0)
3080 got += more;
3081 }
5e2ab84b
NIS
3082 return got;
3083}
3084
5e2ab84b
NIS
3085PerlIO_funcs PerlIO_pending = {
3086 "pending",
3087 sizeof(PerlIOBuf),
3088 PERLIO_K_BUFFERED,
5e2ab84b
NIS
3089 PerlIOPending_pushed,
3090 PerlIOBase_noop_ok,
e3f3bf95
NIS
3091 NULL,
3092 NULL,
3093 PerlIOBase_fileno,
5e2ab84b
NIS
3094 PerlIOPending_read,
3095 PerlIOBuf_unread,
3096 PerlIOBuf_write,
3097 PerlIOPending_seek,
3098 PerlIOBuf_tell,
3099 PerlIOPending_close,
3100 PerlIOPending_flush,
3101 PerlIOPending_fill,
3102 PerlIOBase_eof,
3103 PerlIOBase_error,
3104 PerlIOBase_clearerr,
f6c77cf1 3105 PerlIOBase_setlinebuf,
5e2ab84b
NIS
3106 PerlIOBuf_get_base,
3107 PerlIOBuf_bufsiz,
3108 PerlIOBuf_get_ptr,
3109 PerlIOBuf_get_cnt,
3110 PerlIOPending_set_ptrcnt,
3111};
3112
3113
3114
3115/*--------------------------------------------------------------------------------------*/
99efab12
NIS
3116/* crlf - translation
3117 On read translate CR,LF to "\n" we do this by overriding ptr/cnt entries
60382766 3118 to hand back a line at a time and keeping a record of which nl we "lied" about.
99efab12 3119 On write translate "\n" to CR,LF
66ecd56b
NIS
3120 */
3121
99efab12
NIS
3122typedef struct
3123{
3124 PerlIOBuf base; /* PerlIOBuf stuff */
60382766 3125 STDCHAR *nl; /* Position of crlf we "lied" about in the buffer */
99efab12
NIS
3126} PerlIOCrlf;
3127
f5b9d040 3128IV
e3f3bf95 3129PerlIOCrlf_pushed(PerlIO *f, const char *mode,SV *arg)
f5b9d040
NIS
3130{
3131 IV code;
3132 PerlIOBase(f)->flags |= PERLIO_F_CRLF;
e3f3bf95 3133 code = PerlIOBuf_pushed(f,mode,arg);
5e2ab84b 3134#if 0
4659c93f 3135 PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08"UVxf"\n",
f5b9d040 3136 f,PerlIOBase(f)->tab->name,(mode) ? mode : "(Null)",
a4d3c1d3 3137 PerlIOBase(f)->flags);
5e2ab84b 3138#endif
f5b9d040
NIS
3139 return code;
3140}
3141
3142
99efab12
NIS
3143SSize_t
3144PerlIOCrlf_unread(PerlIO *f, const void *vbuf, Size_t count)
3145{
60382766 3146 PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf);
60382766
NIS
3147 if (c->nl)
3148 {
3149 *(c->nl) = 0xd;
3150 c->nl = NULL;
3151 }
f5b9d040
NIS
3152 if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF))
3153 return PerlIOBuf_unread(f,vbuf,count);
3154 else
99efab12 3155 {
a4d3c1d3 3156 const STDCHAR *buf = (const STDCHAR *) vbuf+count;
f5b9d040
NIS
3157 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
3158 SSize_t unread = 0;
3159 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
3160 PerlIO_flush(f);
3161 if (!b->buf)
3162 PerlIO_get_base(f);
3163 if (b->buf)
99efab12 3164 {
f5b9d040 3165 if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF))
99efab12 3166 {
f5b9d040
NIS
3167 b->end = b->ptr = b->buf + b->bufsiz;
3168 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
5e2ab84b 3169 b->posn -= b->bufsiz;
f5b9d040
NIS
3170 }
3171 while (count > 0 && b->ptr > b->buf)
3172 {
3173 int ch = *--buf;
3174 if (ch == '\n')
99efab12 3175 {
f5b9d040
NIS
3176 if (b->ptr - 2 >= b->buf)
3177 {
3178 *--(b->ptr) = 0xa;
3179 *--(b->ptr) = 0xd;
3180 unread++;
3181 count--;
3182 }
3183 else
3184 {
3185 buf++;
3186 break;
3187 }
99efab12
NIS
3188 }
3189 else
3190 {
f5b9d040
NIS
3191 *--(b->ptr) = ch;
3192 unread++;
3193 count--;
99efab12
NIS
3194 }
3195 }
99efab12 3196 }
f5b9d040 3197 return unread;
99efab12 3198 }
99efab12
NIS
3199}
3200
3201SSize_t
3202PerlIOCrlf_get_cnt(PerlIO *f)
3203{
3204 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
3205 if (!b->buf)
3206 PerlIO_get_base(f);
3207 if (PerlIOBase(f)->flags & PERLIO_F_RDBUF)
3208 {
3209 PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf);
f5b9d040 3210 if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && !c->nl)
99efab12
NIS
3211 {
3212 STDCHAR *nl = b->ptr;
60382766 3213 scan:
99efab12
NIS
3214 while (nl < b->end && *nl != 0xd)
3215 nl++;
3216 if (nl < b->end && *nl == 0xd)
3217 {
60382766 3218 test:
99efab12
NIS
3219 if (nl+1 < b->end)
3220 {
3221 if (nl[1] == 0xa)
3222 {
3223 *nl = '\n';
60382766 3224 c->nl = nl;
99efab12 3225 }
60382766 3226 else
99efab12
NIS
3227 {
3228 /* Not CR,LF but just CR */
3229 nl++;
60382766 3230 goto scan;
99efab12
NIS
3231 }
3232 }
3233 else
3234 {
60382766 3235 /* Blast - found CR as last char in buffer */
99efab12
NIS
3236 if (b->ptr < nl)
3237 {
3238 /* They may not care, defer work as long as possible */
60382766 3239 return (nl - b->ptr);
99efab12
NIS
3240 }
3241 else
3242 {
3243 int code;
99efab12
NIS
3244 b->ptr++; /* say we have read it as far as flush() is concerned */
3245 b->buf++; /* Leave space an front of buffer */
3246 b->bufsiz--; /* Buffer is thus smaller */
3247 code = PerlIO_fill(f); /* Fetch some more */
3248 b->bufsiz++; /* Restore size for next time */
3249 b->buf--; /* Point at space */
3250 b->ptr = nl = b->buf; /* Which is what we hand off */
3251 b->posn--; /* Buffer starts here */
3252 *nl = 0xd; /* Fill in the CR */
60382766 3253 if (code == 0)
99efab12
NIS
3254 goto test; /* fill() call worked */
3255 /* CR at EOF - just fall through */
3256 }
3257 }
60382766
NIS
3258 }
3259 }
99efab12
NIS
3260 return (((c->nl) ? (c->nl+1) : b->end) - b->ptr);
3261 }
3262 return 0;
3263}
3264
3265void
3266PerlIOCrlf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt)
3267{
3268 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
3269 PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf);
f5b9d040 3270 IV flags = PerlIOBase(f)->flags;
99efab12
NIS
3271 if (!b->buf)
3272 PerlIO_get_base(f);
3273 if (!ptr)
60382766 3274 {
63dbdb06
NIS
3275 if (c->nl)
3276 ptr = c->nl+1;
3277 else
3278 {
3279 ptr = b->end;
f5b9d040 3280 if ((flags & PERLIO_F_CRLF) && ptr > b->buf && ptr[-1] == 0xd)
63dbdb06
NIS
3281 ptr--;
3282 }
3283 ptr -= cnt;
60382766
NIS
3284 }
3285 else
3286 {
63dbdb06
NIS
3287 /* Test code - delete when it works ... */
3288 STDCHAR *chk;
3289 if (c->nl)
3290 chk = c->nl+1;
3291 else
3292 {
3293 chk = b->end;
f5b9d040 3294 if ((flags & PERLIO_F_CRLF) && chk > b->buf && chk[-1] == 0xd)
63dbdb06
NIS
3295 chk--;
3296 }
3297 chk -= cnt;
a4d3c1d3 3298
63dbdb06
NIS
3299 if (ptr != chk)
3300 {
3301 dTHX;
4659c93f 3302 Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08"UVxf" nl=%p e=%p for %d",
a4d3c1d3 3303 ptr, chk, flags, c->nl, b->end, cnt);
63dbdb06 3304 }
60382766 3305 }
99efab12
NIS
3306 if (c->nl)
3307 {
3308 if (ptr > c->nl)
3309 {
3310 /* They have taken what we lied about */
3311 *(c->nl) = 0xd;
3312 c->nl = NULL;
3313 ptr++;
60382766 3314 }
99efab12
NIS
3315 }
3316 b->ptr = ptr;
3317 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
3318}
3319
3320SSize_t
3321PerlIOCrlf_write(PerlIO *f, const void *vbuf, Size_t count)
3322{
f5b9d040
NIS
3323 if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF))
3324 return PerlIOBuf_write(f,vbuf,count);
3325 else
99efab12 3326 {
a4d3c1d3 3327 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
f5b9d040
NIS
3328 const STDCHAR *buf = (const STDCHAR *) vbuf;
3329 const STDCHAR *ebuf = buf+count;
3330 if (!b->buf)
3331 PerlIO_get_base(f);
3332 if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE))
3333 return 0;
3334 while (buf < ebuf)
99efab12 3335 {
f5b9d040
NIS
3336 STDCHAR *eptr = b->buf+b->bufsiz;
3337 PerlIOBase(f)->flags |= PERLIO_F_WRBUF;
3338 while (buf < ebuf && b->ptr < eptr)
99efab12 3339 {
f5b9d040 3340 if (*buf == '\n')
60382766 3341 {
f5b9d040 3342 if ((b->ptr + 2) > eptr)
60382766 3343 {
f5b9d040 3344 /* Not room for both */
60382766
NIS
3345 PerlIO_flush(f);
3346 break;
3347 }
f5b9d040
NIS
3348 else
3349 {
3350 *(b->ptr)++ = 0xd; /* CR */
3351 *(b->ptr)++ = 0xa; /* LF */
3352 buf++;
3353 if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF)
3354 {
3355 PerlIO_flush(f);
3356 break;
3357 }
3358 }
3359 }
3360 else
3361 {
3362 int ch = *buf++;
3363 *(b->ptr)++ = ch;
3364 }
3365 if (b->ptr >= eptr)
3366 {
3367 PerlIO_flush(f);
3368 break;
99efab12 3369 }
99efab12
NIS
3370 }
3371 }
f5b9d040
NIS
3372 if (PerlIOBase(f)->flags & PERLIO_F_UNBUF)
3373 PerlIO_flush(f);
3374 return (buf - (STDCHAR *) vbuf);
99efab12 3375 }
99efab12
NIS
3376}
3377
3378IV
3379PerlIOCrlf_flush(PerlIO *f)
3380{
3381 PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf);
3382 if (c->nl)
3383 {
99efab12 3384 *(c->nl) = 0xd;
60382766 3385 c->nl = NULL;
99efab12
NIS
3386 }
3387 return PerlIOBuf_flush(f);
3388}
3389
66ecd56b
NIS
3390PerlIO_funcs PerlIO_crlf = {
3391 "crlf",
99efab12 3392 sizeof(PerlIOCrlf),
f5b9d040 3393 PERLIO_K_BUFFERED|PERLIO_K_CANCRLF,
f5b9d040 3394 PerlIOCrlf_pushed,
99efab12 3395 PerlIOBase_noop_ok, /* popped */
e3f3bf95
NIS
3396 PerlIOBuf_open,
3397 NULL,
3398 PerlIOBase_fileno,
99efab12
NIS
3399 PerlIOBuf_read, /* generic read works with ptr/cnt lies ... */
3400 PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */
3401 PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */
66ecd56b
NIS
3402 PerlIOBuf_seek,
3403 PerlIOBuf_tell,
3404 PerlIOBuf_close,
99efab12 3405 PerlIOCrlf_flush,
66ecd56b
NIS
3406 PerlIOBuf_fill,
3407 PerlIOBase_eof,
3408 PerlIOBase_error,
3409 PerlIOBase_clearerr,
f6c77cf1 3410 PerlIOBase_setlinebuf,
66ecd56b
NIS
3411 PerlIOBuf_get_base,
3412 PerlIOBuf_bufsiz,
3413 PerlIOBuf_get_ptr,
99efab12
NIS
3414 PerlIOCrlf_get_cnt,
3415 PerlIOCrlf_set_ptrcnt,
66ecd56b
NIS
3416};
3417
06da4f11
NIS
3418#ifdef HAS_MMAP
3419/*--------------------------------------------------------------------------------------*/
3420/* mmap as "buffer" layer */
3421
3422typedef struct
3423{
3424 PerlIOBuf base; /* PerlIOBuf stuff */
c3d7c7c9 3425 Mmap_t mptr; /* Mapped address */
06da4f11
NIS
3426 Size_t len; /* mapped length */
3427 STDCHAR *bbuf; /* malloced buffer if map fails */
3428} PerlIOMmap;
3429
c3d7c7c9
NIS
3430static size_t page_size = 0;
3431
06da4f11
NIS
3432IV
3433PerlIOMmap_map(PerlIO *f)
3434{
68d873c6 3435 dTHX;
06da4f11 3436 PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap);
06da4f11
NIS
3437 IV flags = PerlIOBase(f)->flags;
3438 IV code = 0;
3439 if (m->len)
3440 abort();
3441 if (flags & PERLIO_F_CANREAD)
3442 {
3443 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
3444 int fd = PerlIO_fileno(f);
3445 struct stat st;
3446 code = fstat(fd,&st);
3447 if (code == 0 && S_ISREG(st.st_mode))
3448 {
3449 SSize_t len = st.st_size - b->posn;
3450 if (len > 0)
3451 {
c3d7c7c9 3452 Off_t posn;
68d873c6
JH
3453 if (!page_size) {
3454#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE))
3455 {
3456 SETERRNO(0,SS$_NORMAL);
3457# ifdef _SC_PAGESIZE
3458 page_size = sysconf(_SC_PAGESIZE);
3459# else
3460 page_size = sysconf(_SC_PAGE_SIZE);
14aaf8e8 3461# endif
68d873c6
JH
3462 if ((long)page_size < 0) {
3463 if (errno) {
3464 SV *error = ERRSV;
3465 char *msg;
3466 STRLEN n_a;
3467 (void)SvUPGRADE(error, SVt_PV);
3468 msg = SvPVx(error, n_a);
14aaf8e8 3469 Perl_croak(aTHX_ "panic: sysconf: %s", msg);
68d873c6
JH
3470 }
3471 else
14aaf8e8 3472 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
68d873c6
JH
3473 }
3474 }
3475#else
3476# ifdef HAS_GETPAGESIZE
c3d7c7c9 3477 page_size = getpagesize();
68d873c6
JH
3478# else
3479# if defined(I_SYS_PARAM) && defined(PAGESIZE)
3480 page_size = PAGESIZE; /* compiletime, bad */
3481# endif
3482# endif
3483#endif
3484 if ((IV)page_size <= 0)
14aaf8e8 3485 Perl_croak(aTHX_ "panic: bad pagesize %"IVdf, (IV)page_size);
68d873c6 3486 }
c3d7c7c9
NIS
3487 if (b->posn < 0)
3488 {
3489 /* This is a hack - should never happen - open should have set it ! */
3490 b->posn = PerlIO_tell(PerlIONext(f));
3491 }
3492 posn = (b->posn / page_size) * page_size;
3493 len = st.st_size - posn;
a5262162 3494 m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn);
c3d7c7c9 3495 if (m->mptr && m->mptr != (Mmap_t) -1)
06da4f11 3496 {
a5262162 3497#if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL)
c3d7c7c9 3498 madvise(m->mptr, len, MADV_SEQUENTIAL);
06da4f11 3499#endif
a5262162
NIS
3500#if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED)
3501 madvise(m->mptr, len, MADV_WILLNEED);
3502#endif
c3d7c7c9
NIS
3503 PerlIOBase(f)->flags = (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF;
3504 b->end = ((STDCHAR *)m->mptr) + len;
3505 b->buf = ((STDCHAR *)m->mptr) + (b->posn - posn);
3506 b->ptr = b->buf;
3507 m->len = len;
06da4f11
NIS
3508 }
3509 else
3510 {
3511 b->buf = NULL;
3512 }
3513 }
3514 else
3515 {
3516 PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF;
3517 b->buf = NULL;
3518 b->ptr = b->end = b->ptr;
3519 code = -1;
3520 }
3521 }
3522 }
3523 return code;
3524}
3525
3526IV
3527PerlIOMmap_unmap(PerlIO *f)
3528{
3529 PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap);
3530 PerlIOBuf *b = &m->base;
3531 IV code = 0;
3532 if (m->len)
3533 {
3534 if (b->buf)
3535 {
c3d7c7c9
NIS
3536 code = munmap(m->mptr, m->len);
3537 b->buf = NULL;
3538 m->len = 0;
3539 m->mptr = NULL;
06da4f11
NIS
3540 if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0)
3541 code = -1;
06da4f11
NIS
3542 }
3543 b->ptr = b->end = b->buf;
3544 PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF);
3545 }
3546 return code;
3547}
3548
3549STDCHAR *
3550PerlIOMmap_get_base(PerlIO *f)
3551{
3552 PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap);
3553 PerlIOBuf *b = &m->base;
3554 if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF))
3555 {
3556 /* Already have a readbuffer in progress */
3557 return b->buf;
3558 }
3559 if (b->buf)
3560 {
3561 /* We have a write buffer or flushed PerlIOBuf read buffer */
3562 m->bbuf = b->buf; /* save it in case we need it again */
3563 b->buf = NULL; /* Clear to trigger below */
3564 }
3565 if (!b->buf)
3566 {
3567 PerlIOMmap_map(f); /* Try and map it */
3568 if (!b->buf)
3569 {
3570 /* Map did not work - recover PerlIOBuf buffer if we have one */
3571 b->buf = m->bbuf;
3572 }
3573 }
3574 b->ptr = b->end = b->buf;
3575 if (b->buf)
3576 return b->buf;
3577 return PerlIOBuf_get_base(f);
3578}
3579
3580SSize_t
3581PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count)
3582{
3583 PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap);
3584 PerlIOBuf *b = &m->base;
3585 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
3586 PerlIO_flush(f);
3587 if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count))
3588 {
3589 b->ptr -= count;
3590 PerlIOBase(f)->flags &= ~ PERLIO_F_EOF;
3591 return count;
3592 }
3593 if (m->len)
3594 {
4a4a6116 3595 /* Loose the unwritable mapped buffer */
06da4f11 3596 PerlIO_flush(f);
c3d7c7c9
NIS
3597 /* If flush took the "buffer" see if we have one from before */
3598 if (!b->buf && m->bbuf)
3599 b->buf = m->bbuf;
3600 if (!b->buf)
3601 {
3602 PerlIOBuf_get_base(f);
3603 m->bbuf = b->buf;
3604 }
06da4f11 3605 }
5e2ab84b 3606return PerlIOBuf_unread(f,vbuf,count);
06da4f11
NIS
3607}
3608
3609SSize_t
3610PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count)
3611{
3612 PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap);
3613 PerlIOBuf *b = &m->base;
3614 if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF))
3615 {
3616 /* No, or wrong sort of, buffer */
3617 if (m->len)
3618 {
3619 if (PerlIOMmap_unmap(f) != 0)
3620 return 0;
3621 }
3622 /* If unmap took the "buffer" see if we have one from before */
3623 if (!b->buf && m->bbuf)
3624 b->buf = m->bbuf;
3625 if (!b->buf)
3626 {
3627 PerlIOBuf_get_base(f);
3628 m->bbuf = b->buf;
3629 }
3630 }
3631 return PerlIOBuf_write(f,vbuf,count);
3632}
3633
3634IV
3635PerlIOMmap_flush(PerlIO *f)
3636{
3637 PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap);
3638 PerlIOBuf *b = &m->base;
3639 IV code = PerlIOBuf_flush(f);
3640 /* Now we are "synced" at PerlIOBuf level */
3641 if (b->buf)
3642 {
3643 if (m->len)
3644 {
3645 /* Unmap the buffer */
3646 if (PerlIOMmap_unmap(f) != 0)
3647 code = -1;
3648 }
3649 else
3650 {
3651 /* We seem to have a PerlIOBuf buffer which was not mapped
3652 * remember it in case we need one later
3653 */
3654 m->bbuf = b->buf;
3655 }
3656 }
06da4f11
NIS
3657 return code;
3658}
3659
3660IV
3661PerlIOMmap_fill(PerlIO *f)
3662{
3663 PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
3664 IV code = PerlIO_flush(f);
06da4f11
NIS
3665 if (code == 0 && !b->buf)
3666 {
3667 code = PerlIOMmap_map(f);
06da4f11
NIS
3668 }
3669 if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF))
3670 {
3671 code = PerlIOBuf_fill(f);
06da4f11
NIS
3672 }
3673 return code;
3674}
3675
3676IV
3677PerlIOMmap_close(PerlIO *f)
3678{
3679 PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap);
3680 PerlIOBuf *b = &m->base;
3681 IV code = PerlIO_flush(f);
3682 if (m->bbuf)
3683 {
3684 b->buf = m->bbuf;
3685 m->bbuf = NULL;
3686 b->ptr = b->end = b->buf;
3687 }
3688 if (PerlIOBuf_close(f) != 0)
3689 code = -1;
06da4f11
NIS
3690 return code;
3691}
3692
3693
3694PerlIO_funcs PerlIO_mmap = {
3695 "mmap",
3696 sizeof(PerlIOMmap),
f5b9d040 3697 PERLIO_K_BUFFERED,
5e2ab84b 3698 PerlIOBuf_pushed,
06da4f11 3699 PerlIOBase_noop_ok,
e3f3bf95
NIS
3700 PerlIOBuf_open,
3701 NULL,
3702 PerlIOBase_fileno,
06da4f11
NIS
3703 PerlIOBuf_read,
3704 PerlIOMmap_unread,
3705 PerlIOMmap_write,
3706 PerlIOBuf_seek,
3707 PerlIOBuf_tell,
3708 PerlIOBuf_close,
3709 PerlIOMmap_flush,
3710 PerlIOMmap_fill,
3711 PerlIOBase_eof,
3712 PerlIOBase_error,
3713 PerlIOBase_clearerr,
f6c77cf1 3714 PerlIOBase_setlinebuf,
06da4f11
NIS
3715 PerlIOMmap_get_base,
3716 PerlIOBuf_bufsiz,
3717 PerlIOBuf_get_ptr,
3718 PerlIOBuf_get_cnt,
3719 PerlIOBuf_set_ptrcnt,
3720};
3721
3722#endif /* HAS_MMAP */
3723
9e353e3b
NIS
3724void
3725PerlIO_init(void)
760ac839 3726{
9a6404c5 3727 dTHX;
43c11ae3 3728#ifndef WIN32
9a6404c5 3729 call_atexit(PerlIO_cleanup_layers, NULL);
43c11ae3 3730#endif
9e353e3b 3731 if (!_perlio)
6f9d8c32 3732 {
be696b0a 3733#ifndef WIN32
9e353e3b 3734 atexit(&PerlIO_cleanup);
be696b0a 3735#endif
6f9d8c32 3736 }
760ac839
LW
3737}
3738
9e353e3b
NIS
3739#undef PerlIO_stdin
3740PerlIO *
3741PerlIO_stdin(void)
3742{
3743 if (!_perlio)
1141d9f8
NIS
3744 {
3745 dTHX;
3746 PerlIO_stdstreams(aTHX);
3747 }
05d1247b 3748 return &_perlio[1];
9e353e3b
NIS
3749}
3750
3751#undef PerlIO_stdout
3752PerlIO *
3753PerlIO_stdout(void)
3754{
3755 if (!_perlio)
1141d9f8
NIS
3756 {
3757 dTHX;
3758 PerlIO_stdstreams(aTHX);
3759 }
05d1247b 3760 return &_perlio[2];
9e353e3b
NIS
3761}
3762
3763#undef PerlIO_stderr
3764PerlIO *
3765PerlIO_stderr(void)
3766{
3767 if (!_perlio)
1141d9f8
NIS
3768 {
3769 dTHX;
3770 PerlIO_stdstreams(aTHX);
3771 }
05d1247b 3772 return &_perlio[3];
9e353e3b
NIS
3773}
3774
3775/*--------------------------------------------------------------------------------------*/
3776
3777#undef PerlIO_getname
3778char *
3779PerlIO_getname(PerlIO *f, char *buf)
3780{
3781 dTHX;
a15cef0c
CB
3782 char *name = NULL;
3783#ifdef VMS
3784 FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
3785 if (stdio) name = fgetname(stdio, buf);
3786#else
9e353e3b 3787 Perl_croak(aTHX_ "Don't know how to get file name");
a15cef0c
CB
3788#endif
3789 return name;
9e353e3b
NIS
3790}
3791
3792
3793/*--------------------------------------------------------------------------------------*/
3794/* Functions which can be called on any kind of PerlIO implemented
3795 in terms of above
3796*/
3797
3798#undef PerlIO_getc
6f9d8c32 3799int
9e353e3b 3800PerlIO_getc(PerlIO *f)
760ac839 3801{
313ca112
NIS
3802 STDCHAR buf[1];
3803 SSize_t count = PerlIO_read(f,buf,1);
9e353e3b 3804 if (count == 1)
313ca112
NIS
3805 {
3806 return (unsigned char) buf[0];
3807 }
3808 return EOF;
3809}
3810
3811#undef PerlIO_ungetc
3812int
3813PerlIO_ungetc(PerlIO *f, int ch)
3814{
3815 if (ch != EOF)
3816 {
3817 STDCHAR buf = ch;
3818 if (PerlIO_unread(f,&buf,1) == 1)
3819 return ch;
3820 }
3821 return EOF;
760ac839
LW
3822}
3823
9e353e3b
NIS
3824#undef PerlIO_putc
3825int
3826PerlIO_putc(PerlIO *f, int ch)
760ac839 3827{
9e353e3b
NIS
3828 STDCHAR buf = ch;
3829 return PerlIO_write(f,&buf,1);
760ac839
LW
3830}
3831
9e353e3b 3832#undef PerlIO_puts
760ac839 3833int
9e353e3b 3834PerlIO_puts(PerlIO *f, const char *s)
760ac839 3835{
9e353e3b
NIS
3836 STRLEN len = strlen(s);
3837 return PerlIO_write(f,s,len);
760ac839
LW
3838}
3839
3840#undef PerlIO_rewind
3841void
c78749f2 3842PerlIO_rewind(PerlIO *f)
760ac839 3843{
6f9d8c32 3844 PerlIO_seek(f,(Off_t)0,SEEK_SET);
9e353e3b 3845 PerlIO_clearerr(f);
6f9d8c32
NIS
3846}
3847
3848#undef PerlIO_vprintf
3849int
3850PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap)
3851{
3852 dTHX;
bb9950b7 3853 SV *sv = newSVpvn("",0);
6f9d8c32
NIS
3854 char *s;
3855 STRLEN len;
933fb4e4 3856 SSize_t wrote;
2cc61e15
DD
3857#ifdef NEED_VA_COPY
3858 va_list apc;
3859 Perl_va_copy(ap, apc);
3860 sv_vcatpvf(sv, fmt, &apc);
3861#else
6f9d8c32 3862 sv_vcatpvf(sv, fmt, &ap);
2cc61e15 3863#endif
6f9d8c32 3864 s = SvPV(sv,len);
933fb4e4
BS
3865 wrote = PerlIO_write(f,s,len);
3866 SvREFCNT_dec(sv);
3867 return wrote;
760ac839
LW
3868}
3869
3870#undef PerlIO_printf
6f9d8c32 3871int
760ac839 3872PerlIO_printf(PerlIO *f,const char *fmt,...)
760ac839
LW
3873{
3874 va_list ap;
3875 int result;
760ac839 3876 va_start(ap,fmt);
6f9d8c32 3877 result = PerlIO_vprintf(f,fmt,ap);
760ac839
LW
3878 va_end(ap);
3879 return result;
3880}
3881
3882#undef PerlIO_stdoutf
6f9d8c32 3883int
760ac839 3884PerlIO_stdoutf(const char *fmt,...)
760ac839
LW
3885{
3886 va_list ap;
3887 int result;
760ac839 3888 va_start(ap,fmt);
760ac839
LW
3889 result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap);
3890 va_end(ap);
3891 return result;
3892}
3893
3894#undef PerlIO_tmpfile
3895PerlIO *
c78749f2 3896PerlIO_tmpfile(void)
760ac839 3897{
b1ef6e3b 3898 /* I have no idea how portable mkstemp() is ... */
83b075c3 3899#if defined(WIN32) || !defined(HAVE_MKSTEMP)
adb71456 3900 dTHX;
83b075c3 3901 PerlIO *f = NULL;
eaf8b698 3902 FILE *stdio = PerlSIO_tmpfile();
83b075c3
NIS
3903 if (stdio)
3904 {
e3f3bf95 3905 PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),&PerlIO_stdio,"w+",Nullsv),PerlIOStdio);
83b075c3
NIS
3906 s->stdio = stdio;
3907 }
3908 return f;
3909#else
3910 dTHX;
6f9d8c32
NIS
3911 SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0);
3912 int fd = mkstemp(SvPVX(sv));
3913 PerlIO *f = NULL;
3914 if (fd >= 0)
3915 {
b1ef6e3b