Commit | Line | Data |
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760ac839 LW |
1 | /* perlio.c |
2 | * | |
26fb694e | 3 | * Copyright (c) 1996-2001, Nick Ing-Simmons |
760ac839 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
8 | */ | |
9 | ||
10 | #define VOIDUSED 1 | |
12ae5dfc JH |
11 | #ifdef PERL_MICRO |
12 | # include "uconfig.h" | |
13 | #else | |
14 | # include "config.h" | |
15 | #endif | |
760ac839 | 16 | |
6f9d8c32 | 17 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 18 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
6f9d8c32 | 19 | /* #define PerlIO FILE */ |
760ac839 LW |
20 | #endif |
21 | /* | |
6f9d8c32 | 22 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 23 | * which are not #defined in perlio.h. |
6f9d8c32 | 24 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
25 | */ |
26 | ||
27 | #include "EXTERN.h" | |
864dbfa3 | 28 | #define PERL_IN_PERLIO_C |
760ac839 LW |
29 | #include "perl.h" |
30 | ||
5f1a76d0 NIS |
31 | #undef PerlMemShared_calloc |
32 | #define PerlMemShared_calloc(x,y) calloc(x,y) | |
33 | #undef PerlMemShared_free | |
34 | #define PerlMemShared_free(x) free(x) | |
35 | ||
60382766 | 36 | int |
f5b9d040 | 37 | perlsio_binmode(FILE *fp, int iotype, int mode) |
60382766 NIS |
38 | { |
39 | /* This used to be contents of do_binmode in doio.c */ | |
40 | #ifdef DOSISH | |
41 | # if defined(atarist) || defined(__MINT__) | |
f5b9d040 | 42 | if (!fflush(fp)) { |
60382766 NIS |
43 | if (mode & O_BINARY) |
44 | ((FILE*)fp)->_flag |= _IOBIN; | |
45 | else | |
46 | ((FILE*)fp)->_flag &= ~ _IOBIN; | |
47 | return 1; | |
48 | } | |
49 | return 0; | |
50 | # else | |
eb73beca | 51 | dTHX; |
f5b9d040 | 52 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { |
60382766 NIS |
53 | # if defined(WIN32) && defined(__BORLANDC__) |
54 | /* The translation mode of the stream is maintained independent | |
55 | * of the translation mode of the fd in the Borland RTL (heavy | |
56 | * digging through their runtime sources reveal). User has to | |
57 | * set the mode explicitly for the stream (though they don't | |
58 | * document this anywhere). GSAR 97-5-24 | |
59 | */ | |
f5b9d040 | 60 | fseek(fp,0L,0); |
60382766 | 61 | if (mode & O_BINARY) |
f5b9d040 | 62 | fp->flags |= _F_BIN; |
60382766 | 63 | else |
f5b9d040 | 64 | fp->flags &= ~ _F_BIN; |
60382766 NIS |
65 | # endif |
66 | return 1; | |
67 | } | |
68 | else | |
69 | return 0; | |
70 | # endif | |
71 | #else | |
72 | # if defined(USEMYBINMODE) | |
73 | if (my_binmode(fp, iotype, mode) != FALSE) | |
74 | return 1; | |
75 | else | |
76 | return 0; | |
77 | # else | |
78 | return 1; | |
79 | # endif | |
80 | #endif | |
81 | } | |
82 | ||
eb73beca NIS |
83 | #ifndef PERLIO_LAYERS |
84 | int | |
85 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
86 | { | |
87 | if (!names || !*names || strEQ(names,":crlf") || strEQ(names,":raw")) | |
88 | { | |
89 | return 0; | |
90 | } | |
91 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl",names); | |
92 | /* NOTREACHED */ | |
93 | return -1; | |
94 | } | |
95 | ||
f5b9d040 NIS |
96 | int |
97 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
98 | { | |
99 | return perlsio_binmode(fp,iotype,mode); | |
100 | } | |
60382766 | 101 | |
ee518936 NIS |
102 | /* De-mux PerlIO_openn() into fdopen, freopen and fopen type entries */ |
103 | ||
104 | PerlIO * | |
105 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args) | |
106 | { | |
107 | if (narg == 1) | |
108 | { | |
109 | char *name = SvPV_nolen(*args); | |
110 | if (*mode == '#') | |
111 | { | |
112 | fd = PerlLIO_open3(name,imode,perm); | |
113 | if (fd >= 0) | |
114 | return PerlIO_fdopen(fd,mode+1); | |
115 | } | |
116 | else if (old) | |
117 | { | |
118 | return PerlIO_reopen(name,mode,old); | |
119 | } | |
120 | else | |
121 | { | |
122 | return PerlIO_open(name,mode); | |
123 | } | |
124 | } | |
125 | else | |
126 | { | |
127 | return PerlIO_fdopen(fd,mode); | |
128 | } | |
129 | return NULL; | |
130 | } | |
131 | ||
ac27b0f5 NIS |
132 | #endif |
133 | ||
32e30700 | 134 | |
6f9d8c32 | 135 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
136 | |
137 | void | |
8ac85365 | 138 | PerlIO_init(void) |
760ac839 | 139 | { |
6f9d8c32 | 140 | /* Does nothing (yet) except force this file to be included |
760ac839 | 141 | in perl binary. That allows this file to force inclusion |
6f9d8c32 NIS |
142 | of other functions that may be required by loadable |
143 | extensions e.g. for FileHandle::tmpfile | |
760ac839 LW |
144 | */ |
145 | } | |
146 | ||
33dcbb9a | 147 | #undef PerlIO_tmpfile |
148 | PerlIO * | |
8ac85365 | 149 | PerlIO_tmpfile(void) |
33dcbb9a | 150 | { |
151 | return tmpfile(); | |
152 | } | |
153 | ||
760ac839 LW |
154 | #else /* PERLIO_IS_STDIO */ |
155 | ||
156 | #ifdef USE_SFIO | |
157 | ||
158 | #undef HAS_FSETPOS | |
159 | #undef HAS_FGETPOS | |
160 | ||
6f9d8c32 | 161 | /* This section is just to make sure these functions |
760ac839 LW |
162 | get pulled in from libsfio.a |
163 | */ | |
164 | ||
165 | #undef PerlIO_tmpfile | |
166 | PerlIO * | |
c78749f2 | 167 | PerlIO_tmpfile(void) |
760ac839 LW |
168 | { |
169 | return sftmp(0); | |
170 | } | |
171 | ||
172 | void | |
c78749f2 | 173 | PerlIO_init(void) |
760ac839 | 174 | { |
6f9d8c32 NIS |
175 | /* Force this file to be included in perl binary. Which allows |
176 | * this file to force inclusion of other functions that may be | |
177 | * required by loadable extensions e.g. for FileHandle::tmpfile | |
760ac839 LW |
178 | */ |
179 | ||
180 | /* Hack | |
181 | * sfio does its own 'autoflush' on stdout in common cases. | |
6f9d8c32 | 182 | * Flush results in a lot of lseek()s to regular files and |
760ac839 LW |
183 | * lot of small writes to pipes. |
184 | */ | |
185 | sfset(sfstdout,SF_SHARE,0); | |
186 | } | |
187 | ||
17c3b450 | 188 | #else /* USE_SFIO */ |
6f9d8c32 | 189 | /*======================================================================================*/ |
6f9d8c32 | 190 | /* Implement all the PerlIO interface ourselves. |
9e353e3b | 191 | */ |
760ac839 | 192 | |
76ced9ad NIS |
193 | #include "perliol.h" |
194 | ||
b1ef6e3b | 195 | /* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */ |
02f66e2f NIS |
196 | #ifdef I_UNISTD |
197 | #include <unistd.h> | |
198 | #endif | |
06da4f11 NIS |
199 | #ifdef HAS_MMAP |
200 | #include <sys/mman.h> | |
201 | #endif | |
202 | ||
f3862f8b | 203 | #include "XSUB.h" |
02f66e2f | 204 | |
88b61e10 | 205 | void PerlIO_debug(const char *fmt,...) __attribute__((format(__printf__,1,2))); |
6f9d8c32 | 206 | |
6f9d8c32 | 207 | void |
88b61e10 | 208 | PerlIO_debug(const char *fmt,...) |
6f9d8c32 | 209 | { |
adb71456 | 210 | dTHX; |
6f9d8c32 | 211 | static int dbg = 0; |
88b61e10 NIS |
212 | va_list ap; |
213 | va_start(ap,fmt); | |
6f9d8c32 NIS |
214 | if (!dbg) |
215 | { | |
00b02797 | 216 | char *s = PerlEnv_getenv("PERLIO_DEBUG"); |
6f9d8c32 | 217 | if (s && *s) |
00b02797 | 218 | dbg = PerlLIO_open3(s,O_WRONLY|O_CREAT|O_APPEND,0666); |
6f9d8c32 NIS |
219 | else |
220 | dbg = -1; | |
221 | } | |
222 | if (dbg > 0) | |
223 | { | |
224 | dTHX; | |
6f9d8c32 NIS |
225 | SV *sv = newSVpvn("",0); |
226 | char *s; | |
227 | STRLEN len; | |
05d1247b NIS |
228 | s = CopFILE(PL_curcop); |
229 | if (!s) | |
230 | s = "(none)"; | |
231 | Perl_sv_catpvf(aTHX_ sv, "%s:%"IVdf" ", s, (IV)CopLINE(PL_curcop)); | |
c7fc522f NIS |
232 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
233 | ||
6f9d8c32 | 234 | s = SvPV(sv,len); |
00b02797 | 235 | PerlLIO_write(dbg,s,len); |
6f9d8c32 NIS |
236 | SvREFCNT_dec(sv); |
237 | } | |
88b61e10 | 238 | va_end(ap); |
6f9d8c32 NIS |
239 | } |
240 | ||
9e353e3b NIS |
241 | /*--------------------------------------------------------------------------------------*/ |
242 | ||
9e353e3b NIS |
243 | /* Inner level routines */ |
244 | ||
b1ef6e3b | 245 | /* Table of pointers to the PerlIO structs (malloc'ed) */ |
05d1247b NIS |
246 | PerlIO *_perlio = NULL; |
247 | #define PERLIO_TABLE_SIZE 64 | |
6f9d8c32 | 248 | |
760ac839 | 249 | PerlIO * |
5f1a76d0 | 250 | PerlIO_allocate(pTHX) |
6f9d8c32 | 251 | { |
f3862f8b | 252 | /* Find a free slot in the table, allocating new table as necessary */ |
5f1a76d0 | 253 | PerlIO **last; |
6f9d8c32 | 254 | PerlIO *f; |
5f1a76d0 | 255 | last = &_perlio; |
05d1247b | 256 | while ((f = *last)) |
6f9d8c32 | 257 | { |
05d1247b NIS |
258 | int i; |
259 | last = (PerlIO **)(f); | |
260 | for (i=1; i < PERLIO_TABLE_SIZE; i++) | |
6f9d8c32 | 261 | { |
05d1247b | 262 | if (!*++f) |
6f9d8c32 | 263 | { |
6f9d8c32 NIS |
264 | return f; |
265 | } | |
6f9d8c32 | 266 | } |
6f9d8c32 | 267 | } |
5f1a76d0 | 268 | f = PerlMemShared_calloc(PERLIO_TABLE_SIZE,sizeof(PerlIO)); |
05d1247b | 269 | if (!f) |
5f1a76d0 NIS |
270 | { |
271 | return NULL; | |
766a733e | 272 | } |
05d1247b NIS |
273 | *last = f; |
274 | return f+1; | |
275 | } | |
276 | ||
277 | void | |
5f1a76d0 | 278 | PerlIO_cleantable(pTHX_ PerlIO **tablep) |
05d1247b NIS |
279 | { |
280 | PerlIO *table = *tablep; | |
281 | if (table) | |
282 | { | |
283 | int i; | |
5f1a76d0 | 284 | PerlIO_cleantable(aTHX_ (PerlIO **) &(table[0])); |
05d1247b NIS |
285 | for (i=PERLIO_TABLE_SIZE-1; i > 0; i--) |
286 | { | |
287 | PerlIO *f = table+i; | |
60382766 | 288 | if (*f) |
3789aae2 NIS |
289 | { |
290 | PerlIO_close(f); | |
291 | } | |
05d1247b | 292 | } |
5f1a76d0 | 293 | PerlMemShared_free(table); |
05d1247b NIS |
294 | *tablep = NULL; |
295 | } | |
296 | } | |
297 | ||
4a4a6116 NIS |
298 | HV *PerlIO_layer_hv; |
299 | AV *PerlIO_layer_av; | |
300 | ||
05d1247b | 301 | void |
5f1a76d0 | 302 | PerlIO_cleanup() |
05d1247b | 303 | { |
5f1a76d0 NIS |
304 | dTHX; |
305 | PerlIO_cleantable(aTHX_ &_perlio); | |
6f9d8c32 NIS |
306 | } |
307 | ||
9e353e3b | 308 | void |
a999f61b | 309 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 310 | { |
9e353e3b NIS |
311 | PerlIOl *l = *f; |
312 | if (l) | |
6f9d8c32 | 313 | { |
86295796 | 314 | PerlIO_debug("PerlIO_pop f=%p %s\n",f,l->tab->name); |
26fb694e NIS |
315 | if (l->tab->Popped) |
316 | (*l->tab->Popped)(f); | |
9e353e3b | 317 | *f = l->next; |
5f1a76d0 | 318 | PerlMemShared_free(l); |
6f9d8c32 | 319 | } |
6f9d8c32 NIS |
320 | } |
321 | ||
9e353e3b | 322 | /*--------------------------------------------------------------------------------------*/ |
b931b1d9 | 323 | /* XS Interface for perl code */ |
9e353e3b | 324 | |
b931b1d9 | 325 | XS(XS_perlio_import) |
f3862f8b NIS |
326 | { |
327 | dXSARGS; | |
328 | GV *gv = CvGV(cv); | |
329 | char *s = GvNAME(gv); | |
330 | STRLEN l = GvNAMELEN(gv); | |
331 | PerlIO_debug("%.*s\n",(int) l,s); | |
332 | XSRETURN_EMPTY; | |
333 | } | |
334 | ||
b931b1d9 | 335 | XS(XS_perlio_unimport) |
f3862f8b NIS |
336 | { |
337 | dXSARGS; | |
338 | GV *gv = CvGV(cv); | |
339 | char *s = GvNAME(gv); | |
340 | STRLEN l = GvNAMELEN(gv); | |
341 | PerlIO_debug("%.*s\n",(int) l,s); | |
342 | XSRETURN_EMPTY; | |
343 | } | |
344 | ||
f3862f8b | 345 | SV * |
a999f61b | 346 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len) |
f3862f8b | 347 | { |
f3862f8b NIS |
348 | SV **svp; |
349 | SV *sv; | |
766a733e | 350 | if ((SSize_t) len <= 0) |
f3862f8b NIS |
351 | len = strlen(name); |
352 | svp = hv_fetch(PerlIO_layer_hv,name,len,0); | |
353 | if (svp && (sv = *svp) && SvROK(sv)) | |
354 | return *svp; | |
355 | return NULL; | |
356 | } | |
357 | ||
b13b2135 NIS |
358 | |
359 | static int | |
360 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
361 | { | |
362 | if (SvROK(sv)) | |
363 | { | |
b931b1d9 | 364 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 NIS |
365 | PerlIO *ifp = IoIFP(io); |
366 | PerlIO *ofp = IoOFP(io); | |
367 | AV *av = (AV *) mg->mg_obj; | |
4659c93f | 368 | Perl_warn(aTHX_ "set %"SVf" %p %p %p",sv,io,ifp,ofp); |
b13b2135 NIS |
369 | } |
370 | return 0; | |
371 | } | |
372 | ||
373 | static int | |
374 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
375 | { | |
376 | if (SvROK(sv)) | |
377 | { | |
b931b1d9 | 378 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 NIS |
379 | PerlIO *ifp = IoIFP(io); |
380 | PerlIO *ofp = IoOFP(io); | |
381 | AV *av = (AV *) mg->mg_obj; | |
4659c93f | 382 | Perl_warn(aTHX_ "get %"SVf" %p %p %p",sv,io,ifp,ofp); |
b13b2135 NIS |
383 | } |
384 | return 0; | |
385 | } | |
386 | ||
387 | static int | |
388 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
389 | { | |
4659c93f | 390 | Perl_warn(aTHX_ "clear %"SVf,sv); |
b13b2135 NIS |
391 | return 0; |
392 | } | |
393 | ||
394 | static int | |
395 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
396 | { | |
4659c93f | 397 | Perl_warn(aTHX_ "free %"SVf,sv); |
b13b2135 NIS |
398 | return 0; |
399 | } | |
400 | ||
401 | MGVTBL perlio_vtab = { | |
402 | perlio_mg_get, | |
403 | perlio_mg_set, | |
404 | NULL, /* len */ | |
405 | NULL, | |
406 | perlio_mg_free | |
407 | }; | |
408 | ||
409 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
410 | { | |
411 | dXSARGS; | |
412 | SV *sv = SvRV(ST(1)); | |
413 | AV *av = newAV(); | |
414 | MAGIC *mg; | |
415 | int count = 0; | |
416 | int i; | |
417 | sv_magic(sv, (SV *)av, '~', NULL, 0); | |
418 | SvRMAGICAL_off(sv); | |
419 | mg = mg_find(sv,'~'); | |
420 | mg->mg_virtual = &perlio_vtab; | |
421 | mg_magical(sv); | |
4659c93f | 422 | Perl_warn(aTHX_ "attrib %"SVf,sv); |
b13b2135 NIS |
423 | for (i=2; i < items; i++) |
424 | { | |
425 | STRLEN len; | |
ac27b0f5 | 426 | const char *name = SvPV(ST(i),len); |
a999f61b | 427 | SV *layer = PerlIO_find_layer(aTHX_ name,len); |
b13b2135 NIS |
428 | if (layer) |
429 | { | |
430 | av_push(av,SvREFCNT_inc(layer)); | |
431 | } | |
432 | else | |
433 | { | |
434 | ST(count) = ST(i); | |
435 | count++; | |
436 | } | |
437 | } | |
438 | SvREFCNT_dec(av); | |
439 | XSRETURN(count); | |
440 | } | |
441 | ||
f3862f8b | 442 | void |
a999f61b | 443 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) |
f3862f8b | 444 | { |
b931b1d9 | 445 | HV *stash = gv_stashpv("perlio::Layer", TRUE); |
e7778b43 | 446 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash); |
26fb694e NIS |
447 | if (!PerlIO_layer_hv) |
448 | { | |
449 | PerlIO_layer_hv = get_hv("open::layers",GV_ADD|GV_ADDMULTI); | |
450 | } | |
f3862f8b | 451 | hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),sv,0); |
dfebf958 | 452 | PerlIO_debug("define %s %p\n",tab->name,tab); |
f3862f8b NIS |
453 | } |
454 | ||
dfebf958 NIS |
455 | void |
456 | PerlIO_default_buffer(pTHX) | |
457 | { | |
458 | PerlIO_funcs *tab = &PerlIO_perlio; | |
459 | if (O_BINARY != O_TEXT) | |
460 | { | |
461 | tab = &PerlIO_crlf; | |
462 | } | |
463 | else | |
464 | { | |
465 | if (PerlIO_stdio.Set_ptrcnt) | |
466 | { | |
467 | tab = &PerlIO_stdio; | |
468 | } | |
469 | } | |
470 | PerlIO_debug("Pushing %s\n",tab->name); | |
a999f61b | 471 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(aTHX_ tab->name,0))); |
dfebf958 NIS |
472 | } |
473 | ||
474 | ||
a999f61b | 475 | |
f3862f8b | 476 | PerlIO_funcs * |
a999f61b | 477 | PerlIO_default_layer(pTHX_ I32 n) |
f3862f8b | 478 | { |
f3862f8b NIS |
479 | SV **svp; |
480 | SV *layer; | |
481 | PerlIO_funcs *tab = &PerlIO_stdio; | |
482 | int len; | |
26fb694e | 483 | if (!PerlIO_layer_av) |
f3862f8b | 484 | { |
ac27b0f5 | 485 | const char *s = PerlEnv_getenv("PERLIO"); |
26fb694e | 486 | PerlIO_layer_av = get_av("open::layers",GV_ADD|GV_ADDMULTI); |
b931b1d9 NIS |
487 | newXS("perlio::import",XS_perlio_import,__FILE__); |
488 | newXS("perlio::unimport",XS_perlio_unimport,__FILE__); | |
489 | #if 0 | |
b13b2135 | 490 | newXS("io::MODIFY_SCALAR_ATTRIBUTES",XS_io_MODIFY_SCALAR_ATTRIBUTES,__FILE__); |
b931b1d9 | 491 | #endif |
a999f61b NIS |
492 | PerlIO_define_layer(aTHX_ &PerlIO_raw); |
493 | PerlIO_define_layer(aTHX_ &PerlIO_unix); | |
494 | PerlIO_define_layer(aTHX_ &PerlIO_perlio); | |
495 | PerlIO_define_layer(aTHX_ &PerlIO_stdio); | |
496 | PerlIO_define_layer(aTHX_ &PerlIO_crlf); | |
06da4f11 | 497 | #ifdef HAS_MMAP |
a999f61b | 498 | PerlIO_define_layer(aTHX_ &PerlIO_mmap); |
06da4f11 | 499 | #endif |
a999f61b NIS |
500 | PerlIO_define_layer(aTHX_ &PerlIO_utf8); |
501 | PerlIO_define_layer(aTHX_ &PerlIO_byte); | |
502 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(aTHX_ PerlIO_unix.name,0))); | |
f3862f8b NIS |
503 | if (s) |
504 | { | |
dfebf958 | 505 | IV buffered = 0; |
f3862f8b NIS |
506 | while (*s) |
507 | { | |
00b02797 | 508 | while (*s && isSPACE((unsigned char)*s)) |
f3862f8b NIS |
509 | s++; |
510 | if (*s) | |
511 | { | |
ac27b0f5 | 512 | const char *e = s; |
f3862f8b | 513 | SV *layer; |
00b02797 | 514 | while (*e && !isSPACE((unsigned char)*e)) |
f3862f8b | 515 | e++; |
ac27b0f5 NIS |
516 | if (*s == ':') |
517 | s++; | |
a999f61b | 518 | layer = PerlIO_find_layer(aTHX_ s,e-s); |
f3862f8b NIS |
519 | if (layer) |
520 | { | |
dfebf958 NIS |
521 | PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer))); |
522 | if ((tab->kind & PERLIO_K_DUMMY) && (tab->kind & PERLIO_K_BUFFERED)) | |
523 | { | |
524 | if (!buffered) | |
525 | PerlIO_default_buffer(aTHX); | |
526 | } | |
f3862f8b NIS |
527 | PerlIO_debug("Pushing %.*s\n",(e-s),s); |
528 | av_push(PerlIO_layer_av,SvREFCNT_inc(layer)); | |
dfebf958 | 529 | buffered |= (tab->kind & PERLIO_K_BUFFERED); |
f3862f8b NIS |
530 | } |
531 | else | |
ef0f9817 | 532 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(e-s),s); |
f3862f8b NIS |
533 | s = e; |
534 | } | |
535 | } | |
536 | } | |
537 | } | |
538 | len = av_len(PerlIO_layer_av); | |
539 | if (len < 1) | |
540 | { | |
dfebf958 | 541 | PerlIO_default_buffer(aTHX); |
f3862f8b NIS |
542 | len = av_len(PerlIO_layer_av); |
543 | } | |
544 | if (n < 0) | |
545 | n += len+1; | |
546 | svp = av_fetch(PerlIO_layer_av,n,0); | |
547 | if (svp && (layer = *svp) && SvROK(layer) && SvIOK((layer = SvRV(layer)))) | |
548 | { | |
e7778b43 | 549 | tab = INT2PTR(PerlIO_funcs *, SvIV(layer)); |
f3862f8b NIS |
550 | } |
551 | /* PerlIO_debug("Layer %d is %s\n",n,tab->name); */ | |
552 | return tab; | |
553 | } | |
554 | ||
a999f61b NIS |
555 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
556 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
557 | |
558 | void | |
559 | PerlIO_stdstreams() | |
560 | { | |
561 | if (!_perlio) | |
562 | { | |
5f1a76d0 NIS |
563 | dTHX; |
564 | PerlIO_allocate(aTHX); | |
f5b9d040 NIS |
565 | PerlIO_fdopen(0,"Ir" PERLIO_STDTEXT); |
566 | PerlIO_fdopen(1,"Iw" PERLIO_STDTEXT); | |
567 | PerlIO_fdopen(2,"Iw" PERLIO_STDTEXT); | |
60382766 NIS |
568 | } |
569 | } | |
570 | ||
571 | PerlIO * | |
a999f61b | 572 | PerlIO_push(pTHX_ PerlIO *f,PerlIO_funcs *tab,const char *mode,const char *arg,STRLEN len) |
60382766 NIS |
573 | { |
574 | PerlIOl *l = NULL; | |
5f1a76d0 | 575 | l = PerlMemShared_calloc(tab->size,sizeof(char)); |
60382766 NIS |
576 | if (l) |
577 | { | |
578 | Zero(l,tab->size,char); | |
579 | l->next = *f; | |
580 | l->tab = tab; | |
581 | *f = l; | |
64977eb6 NC |
582 | PerlIO_debug("PerlIO_push f=%p %s %s '%.*s'\n", |
583 | f,tab->name,(mode) ? mode : "(Null)",(int) len,arg); | |
33af2bc7 | 584 | if ((*l->tab->Pushed)(f,mode,arg,len) != 0) |
60382766 | 585 | { |
a999f61b | 586 | PerlIO_pop(aTHX_ f); |
60382766 NIS |
587 | return NULL; |
588 | } | |
589 | } | |
590 | return f; | |
591 | } | |
592 | ||
dfebf958 | 593 | IV |
4b803d04 NIS |
594 | PerlIOPop_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) |
595 | { | |
a999f61b NIS |
596 | dTHX; |
597 | PerlIO_pop(aTHX_ f); | |
4b803d04 NIS |
598 | if (*f) |
599 | { | |
600 | PerlIO_flush(f); | |
a999f61b | 601 | PerlIO_pop(aTHX_ f); |
4b803d04 NIS |
602 | return 0; |
603 | } | |
604 | return -1; | |
605 | } | |
606 | ||
607 | IV | |
dfebf958 NIS |
608 | PerlIORaw_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) |
609 | { | |
4b803d04 | 610 | /* Remove the dummy layer */ |
a999f61b NIS |
611 | dTHX; |
612 | PerlIO_pop(aTHX_ f); | |
dfebf958 | 613 | /* Pop back to bottom layer */ |
4b803d04 | 614 | if (f && *f) |
dfebf958 | 615 | { |
4b803d04 NIS |
616 | int code = 0; |
617 | PerlIO_flush(f); | |
618 | while (!(PerlIOBase(f)->tab->kind & PERLIO_K_RAW)) | |
dfebf958 | 619 | { |
4b803d04 NIS |
620 | if (*PerlIONext(f)) |
621 | { | |
a999f61b | 622 | PerlIO_pop(aTHX_ f); |
4b803d04 NIS |
623 | } |
624 | else | |
625 | { | |
626 | /* Nothing bellow - push unix on top then remove it */ | |
a999f61b | 627 | if (PerlIO_push(aTHX_ f,PerlIO_default_btm(),mode,arg,len)) |
4b803d04 | 628 | { |
a999f61b | 629 | PerlIO_pop(aTHX_ PerlIONext(f)); |
4b803d04 NIS |
630 | } |
631 | break; | |
632 | } | |
dfebf958 | 633 | } |
26fb694e | 634 | PerlIO_debug(":raw f=%p :%s\n",f,PerlIOBase(f)->tab->name); |
dfebf958 NIS |
635 | return 0; |
636 | } | |
637 | return -1; | |
638 | } | |
639 | ||
ac27b0f5 NIS |
640 | int |
641 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
642 | { | |
643 | if (names) | |
644 | { | |
645 | const char *s = names; | |
646 | while (*s) | |
647 | { | |
26fb694e | 648 | while (isSPACE(*s) || *s == ':') |
ac27b0f5 NIS |
649 | s++; |
650 | if (*s) | |
651 | { | |
64977eb6 | 652 | STRLEN llen = 0; |
ac27b0f5 | 653 | const char *e = s; |
33af2bc7 | 654 | const char *as = Nullch; |
64977eb6 NC |
655 | STRLEN alen = 0; |
656 | if (!isIDFIRST(*s)) | |
33af2bc7 | 657 | { |
64977eb6 NC |
658 | /* Message is consistent with how attribute lists are passed. |
659 | Even though this means "foo : : bar" is seen as an invalid separator | |
660 | character. */ | |
661 | char q = ((*s == '\'') ? '"' : '\''); | |
662 | Perl_warn(aTHX_ "perlio: invalid separator character %c%c%c in layer specification list", q, *s, q); | |
663 | return -1; | |
664 | } | |
665 | do | |
666 | { | |
667 | e++; | |
668 | } while (isALNUM(*e)); | |
669 | llen = e-s; | |
670 | if (*e == '(') | |
671 | { | |
672 | int nesting = 1; | |
673 | as = ++e; | |
674 | while (nesting) | |
33af2bc7 | 675 | { |
64977eb6 NC |
676 | switch (*e++) |
677 | { | |
678 | case ')': | |
679 | if (--nesting == 0) | |
680 | alen = (e-1)-as; | |
681 | break; | |
682 | case '(': | |
683 | ++nesting; | |
684 | break; | |
685 | case '\\': | |
686 | /* It's a nul terminated string, not allowed to \ the terminating null. | |
687 | Anything other character is passed over. */ | |
688 | if (*e++) | |
689 | { | |
690 | break; | |
691 | } | |
692 | /* Drop through */ | |
693 | case '\0': | |
694 | e--; | |
695 | Perl_warn(aTHX_ "perlio: argument list not closed for layer \"%.*s\"",(int)(e - s),s); | |
696 | return -1; | |
697 | default: | |
698 | /* boring. */ | |
699 | break; | |
700 | } | |
33af2bc7 | 701 | } |
33af2bc7 | 702 | } |
ac27b0f5 NIS |
703 | if (e > s) |
704 | { | |
a999f61b | 705 | SV *layer = PerlIO_find_layer(aTHX_ s,llen); |
64977eb6 | 706 | if (layer) |
60382766 | 707 | { |
64977eb6 NC |
708 | PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer))); |
709 | if (tab) | |
60382766 | 710 | { |
a999f61b | 711 | if (!PerlIO_push(aTHX_ f,tab,mode,as,alen)) |
64977eb6 | 712 | return -1; |
60382766 | 713 | } |
60382766 | 714 | } |
a0ea11f2 | 715 | else { |
64977eb6 | 716 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(int)llen,s); |
a0ea11f2 NC |
717 | return -1; |
718 | } | |
ac27b0f5 NIS |
719 | } |
720 | s = e; | |
721 | } | |
722 | } | |
723 | } | |
724 | return 0; | |
725 | } | |
726 | ||
f3862f8b | 727 | |
9e353e3b | 728 | |
60382766 NIS |
729 | /*--------------------------------------------------------------------------------------*/ |
730 | /* Given the abstraction above the public API functions */ | |
731 | ||
732 | int | |
f5b9d040 | 733 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 734 | { |
86295796 | 735 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", |
a4d3c1d3 | 736 | f,PerlIOBase(f)->tab->name,iotype,mode, (names) ? names : "(Null)"); |
33af2bc7 | 737 | if (!names && (O_TEXT != O_BINARY && (mode & O_BINARY))) |
76ced9ad | 738 | { |
f5b9d040 | 739 | PerlIO *top = f; |
60382766 NIS |
740 | PerlIOl *l; |
741 | while (l = *top) | |
76ced9ad | 742 | { |
60382766 NIS |
743 | if (PerlIOBase(top)->tab == &PerlIO_crlf) |
744 | { | |
745 | PerlIO_flush(top); | |
a4d3c1d3 | 746 | PerlIOBase(top)->flags &= ~PERLIO_F_CRLF; |
60382766 NIS |
747 | break; |
748 | } | |
749 | top = PerlIONext(top); | |
76ced9ad NIS |
750 | } |
751 | } | |
f5b9d040 NIS |
752 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; |
753 | } | |
754 | ||
755 | #undef PerlIO__close | |
756 | int | |
757 | PerlIO__close(PerlIO *f) | |
758 | { | |
759 | return (*PerlIOBase(f)->tab->Close)(f); | |
76ced9ad NIS |
760 | } |
761 | ||
5f1a76d0 NIS |
762 | #undef PerlIO_fdupopen |
763 | PerlIO * | |
764 | PerlIO_fdupopen(pTHX_ PerlIO *f) | |
765 | { | |
766 | char buf[8]; | |
767 | int fd = PerlLIO_dup(PerlIO_fileno(f)); | |
768 | PerlIO *new = PerlIO_fdopen(fd,PerlIO_modestr(f,buf)); | |
769 | if (new) | |
770 | { | |
771 | Off_t posn = PerlIO_tell(f); | |
772 | PerlIO_seek(new,posn,SEEK_SET); | |
773 | } | |
766a733e | 774 | return new; |
5f1a76d0 | 775 | } |
f5b9d040 | 776 | |
b931b1d9 NIS |
777 | #undef PerlIO_close |
778 | int | |
779 | PerlIO_close(PerlIO *f) | |
780 | { | |
a999f61b | 781 | dTHX; |
b931b1d9 NIS |
782 | int code = (*PerlIOBase(f)->tab->Close)(f); |
783 | while (*f) | |
784 | { | |
a999f61b | 785 | PerlIO_pop(aTHX_ f); |
b931b1d9 NIS |
786 | } |
787 | return code; | |
788 | } | |
789 | ||
790 | #undef PerlIO_fileno | |
791 | int | |
792 | PerlIO_fileno(PerlIO *f) | |
793 | { | |
794 | return (*PerlIOBase(f)->tab->Fileno)(f); | |
795 | } | |
796 | ||
ee518936 NIS |
797 | PerlIO_funcs * |
798 | PerlIO_top_layer(pTHX_ const char *layers) | |
799 | { | |
800 | /* FIXME !!! */ | |
801 | return PerlIO_default_top(); | |
802 | } | |
803 | ||
804 | PerlIO * | |
805 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) | |
806 | { | |
807 | PerlIO_funcs *tab = (f && *f) ? PerlIOBase(f)->tab : PerlIO_top_layer(aTHX_ layers); | |
808 | if (!_perlio) | |
809 | PerlIO_stdstreams(); | |
5e334b7b NIS |
810 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
811 | tab->name,layers,mode,fd,imode,perm,f,narg,args); | |
812 | f = (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,f,narg,args); | |
813 | if (f) | |
814 | { | |
815 | if (layers && *layers) | |
816 | PerlIO_apply_layers(aTHX_ f,mode,layers); | |
817 | } | |
818 | return f; | |
ee518936 | 819 | } |
b931b1d9 NIS |
820 | |
821 | ||
9e353e3b NIS |
822 | #undef PerlIO_fdopen |
823 | PerlIO * | |
824 | PerlIO_fdopen(int fd, const char *mode) | |
825 | { | |
ee518936 NIS |
826 | dTHX; |
827 | return PerlIO_openn(aTHX_ Nullch,mode,fd,0,0,NULL,0,NULL); | |
9e353e3b NIS |
828 | } |
829 | ||
6f9d8c32 NIS |
830 | #undef PerlIO_open |
831 | PerlIO * | |
832 | PerlIO_open(const char *path, const char *mode) | |
833 | { | |
ee518936 NIS |
834 | dTHX; |
835 | SV *name = sv_2mortal(newSVpvn(path,strlen(path))); | |
836 | return PerlIO_openn(aTHX_ Nullch,mode,-1,0,0,NULL,1,&name); | |
6f9d8c32 NIS |
837 | } |
838 | ||
9e353e3b NIS |
839 | #undef PerlIO_reopen |
840 | PerlIO * | |
841 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
6f9d8c32 | 842 | { |
ee518936 NIS |
843 | dTHX; |
844 | SV *name = sv_2mortal(newSVpvn(path,strlen(path))); | |
845 | return PerlIO_openn(aTHX_ Nullch,mode,-1,0,0,f,1,&name); | |
760ac839 LW |
846 | } |
847 | ||
9e353e3b NIS |
848 | #undef PerlIO_read |
849 | SSize_t | |
850 | PerlIO_read(PerlIO *f, void *vbuf, Size_t count) | |
6f9d8c32 | 851 | { |
9e353e3b | 852 | return (*PerlIOBase(f)->tab->Read)(f,vbuf,count); |
760ac839 LW |
853 | } |
854 | ||
313ca112 NIS |
855 | #undef PerlIO_unread |
856 | SSize_t | |
857 | PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 858 | { |
313ca112 | 859 | return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count); |
760ac839 LW |
860 | } |
861 | ||
9e353e3b NIS |
862 | #undef PerlIO_write |
863 | SSize_t | |
864 | PerlIO_write(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 865 | { |
9e353e3b | 866 | return (*PerlIOBase(f)->tab->Write)(f,vbuf,count); |
760ac839 LW |
867 | } |
868 | ||
9e353e3b | 869 | #undef PerlIO_seek |
6f9d8c32 | 870 | int |
9e353e3b | 871 | PerlIO_seek(PerlIO *f, Off_t offset, int whence) |
760ac839 | 872 | { |
9e353e3b | 873 | return (*PerlIOBase(f)->tab->Seek)(f,offset,whence); |
760ac839 LW |
874 | } |
875 | ||
9e353e3b NIS |
876 | #undef PerlIO_tell |
877 | Off_t | |
878 | PerlIO_tell(PerlIO *f) | |
760ac839 | 879 | { |
9e353e3b | 880 | return (*PerlIOBase(f)->tab->Tell)(f); |
760ac839 LW |
881 | } |
882 | ||
9e353e3b | 883 | #undef PerlIO_flush |
6f9d8c32 | 884 | int |
9e353e3b | 885 | PerlIO_flush(PerlIO *f) |
760ac839 | 886 | { |
6f9d8c32 NIS |
887 | if (f) |
888 | { | |
26fb694e NIS |
889 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
890 | if (tab && tab->Flush) | |
891 | { | |
892 | return (*tab->Flush)(f); | |
893 | } | |
894 | else | |
895 | { | |
896 | PerlIO_debug("Cannot flush f=%p :%s\n",f,tab->name); | |
897 | errno = EINVAL; | |
898 | return -1; | |
899 | } | |
6f9d8c32 | 900 | } |
9e353e3b | 901 | else |
6f9d8c32 | 902 | { |
05d1247b | 903 | PerlIO **table = &_perlio; |
9e353e3b | 904 | int code = 0; |
05d1247b | 905 | while ((f = *table)) |
6f9d8c32 | 906 | { |
05d1247b NIS |
907 | int i; |
908 | table = (PerlIO **)(f++); | |
909 | for (i=1; i < PERLIO_TABLE_SIZE; i++) | |
9e353e3b NIS |
910 | { |
911 | if (*f && PerlIO_flush(f) != 0) | |
912 | code = -1; | |
05d1247b | 913 | f++; |
9e353e3b | 914 | } |
6f9d8c32 | 915 | } |
9e353e3b | 916 | return code; |
6f9d8c32 | 917 | } |
760ac839 LW |
918 | } |
919 | ||
06da4f11 NIS |
920 | #undef PerlIO_fill |
921 | int | |
922 | PerlIO_fill(PerlIO *f) | |
923 | { | |
924 | return (*PerlIOBase(f)->tab->Fill)(f); | |
925 | } | |
926 | ||
f3862f8b NIS |
927 | #undef PerlIO_isutf8 |
928 | int | |
929 | PerlIO_isutf8(PerlIO *f) | |
930 | { | |
931 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
932 | } | |
933 | ||
9e353e3b | 934 | #undef PerlIO_eof |
6f9d8c32 | 935 | int |
9e353e3b | 936 | PerlIO_eof(PerlIO *f) |
760ac839 | 937 | { |
9e353e3b NIS |
938 | return (*PerlIOBase(f)->tab->Eof)(f); |
939 | } | |
940 | ||
941 | #undef PerlIO_error | |
942 | int | |
943 | PerlIO_error(PerlIO *f) | |
944 | { | |
945 | return (*PerlIOBase(f)->tab->Error)(f); | |
946 | } | |
947 | ||
948 | #undef PerlIO_clearerr | |
949 | void | |
950 | PerlIO_clearerr(PerlIO *f) | |
951 | { | |
f5b9d040 NIS |
952 | if (f && *f) |
953 | (*PerlIOBase(f)->tab->Clearerr)(f); | |
9e353e3b NIS |
954 | } |
955 | ||
956 | #undef PerlIO_setlinebuf | |
957 | void | |
958 | PerlIO_setlinebuf(PerlIO *f) | |
959 | { | |
960 | (*PerlIOBase(f)->tab->Setlinebuf)(f); | |
961 | } | |
962 | ||
963 | #undef PerlIO_has_base | |
964 | int | |
965 | PerlIO_has_base(PerlIO *f) | |
966 | { | |
967 | if (f && *f) | |
6f9d8c32 | 968 | { |
9e353e3b | 969 | return (PerlIOBase(f)->tab->Get_base != NULL); |
6f9d8c32 | 970 | } |
9e353e3b | 971 | return 0; |
760ac839 LW |
972 | } |
973 | ||
9e353e3b NIS |
974 | #undef PerlIO_fast_gets |
975 | int | |
976 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 977 | { |
5e2ab84b | 978 | if (f && *f && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) |
6f9d8c32 | 979 | { |
5e2ab84b NIS |
980 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
981 | return (tab->Set_ptrcnt != NULL); | |
6f9d8c32 | 982 | } |
9e353e3b NIS |
983 | return 0; |
984 | } | |
985 | ||
986 | #undef PerlIO_has_cntptr | |
987 | int | |
988 | PerlIO_has_cntptr(PerlIO *f) | |
989 | { | |
990 | if (f && *f) | |
991 | { | |
992 | PerlIO_funcs *tab = PerlIOBase(f)->tab; | |
993 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
994 | } | |
995 | return 0; | |
996 | } | |
997 | ||
998 | #undef PerlIO_canset_cnt | |
999 | int | |
1000 | PerlIO_canset_cnt(PerlIO *f) | |
1001 | { | |
1002 | if (f && *f) | |
1003 | { | |
c7fc522f NIS |
1004 | PerlIOl *l = PerlIOBase(f); |
1005 | return (l->tab->Set_ptrcnt != NULL); | |
9e353e3b | 1006 | } |
c7fc522f | 1007 | return 0; |
760ac839 LW |
1008 | } |
1009 | ||
1010 | #undef PerlIO_get_base | |
888911fc | 1011 | STDCHAR * |
a20bf0c3 | 1012 | PerlIO_get_base(PerlIO *f) |
760ac839 | 1013 | { |
9e353e3b NIS |
1014 | return (*PerlIOBase(f)->tab->Get_base)(f); |
1015 | } | |
1016 | ||
1017 | #undef PerlIO_get_bufsiz | |
1018 | int | |
1019 | PerlIO_get_bufsiz(PerlIO *f) | |
1020 | { | |
1021 | return (*PerlIOBase(f)->tab->Get_bufsiz)(f); | |
1022 | } | |
1023 | ||
1024 | #undef PerlIO_get_ptr | |
1025 | STDCHAR * | |
1026 | PerlIO_get_ptr(PerlIO *f) | |
1027 | { | |
5e2ab84b NIS |
1028 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1029 | if (tab->Get_ptr == NULL) | |
1030 | return NULL; | |
1031 | return (*tab->Get_ptr)(f); | |
9e353e3b NIS |
1032 | } |
1033 | ||
1034 | #undef PerlIO_get_cnt | |
05d1247b | 1035 | int |
9e353e3b NIS |
1036 | PerlIO_get_cnt(PerlIO *f) |
1037 | { | |
5e2ab84b NIS |
1038 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1039 | if (tab->Get_cnt == NULL) | |
1040 | return 0; | |
1041 | return (*tab->Get_cnt)(f); | |
9e353e3b NIS |
1042 | } |
1043 | ||
1044 | #undef PerlIO_set_cnt | |
1045 | void | |
05d1247b | 1046 | PerlIO_set_cnt(PerlIO *f,int cnt) |
9e353e3b | 1047 | { |
f3862f8b | 1048 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt); |
9e353e3b NIS |
1049 | } |
1050 | ||
1051 | #undef PerlIO_set_ptrcnt | |
1052 | void | |
05d1247b | 1053 | PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) |
9e353e3b | 1054 | { |
5e2ab84b NIS |
1055 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1056 | if (tab->Set_ptrcnt == NULL) | |
1057 | { | |
1058 | dTHX; | |
1059 | Perl_croak(aTHX_ "PerlIO buffer snooping abuse"); | |
1060 | } | |
f3862f8b | 1061 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt); |
9e353e3b NIS |
1062 | } |
1063 | ||
1064 | /*--------------------------------------------------------------------------------------*/ | |
dfebf958 NIS |
1065 | /* utf8 and raw dummy layers */ |
1066 | ||
26fb694e NIS |
1067 | IV |
1068 | PerlIOUtf8_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) | |
1069 | { | |
1070 | if (PerlIONext(f)) | |
1071 | { | |
a999f61b | 1072 | dTHX; |
26fb694e | 1073 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
a999f61b | 1074 | PerlIO_pop(aTHX_ f); |
26fb694e NIS |
1075 | if (tab->kind & PERLIO_K_UTF8) |
1076 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1077 | else | |
1078 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1079 | return 0; | |
1080 | } | |
1081 | return -1; | |
1082 | } | |
1083 | ||
dfebf958 | 1084 | PerlIO * |
ee518936 | 1085 | PerlIOUtf8_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args) |
dfebf958 | 1086 | { |
a999f61b | 1087 | PerlIO_funcs *tab = PerlIO_default_layer(aTHX_ -2); |
ee518936 | 1088 | PerlIO *f = (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,old,narg,args); |
dfebf958 NIS |
1089 | if (f) |
1090 | { | |
26fb694e NIS |
1091 | PerlIOl *l = PerlIOBase(f); |
1092 | if (tab->kind & PERLIO_K_UTF8) | |
1093 | l->flags |= PERLIO_F_UTF8; | |
1094 | else | |
1095 | l->flags &= ~PERLIO_F_UTF8; | |
1096 | } | |
dfebf958 NIS |
1097 | return f; |
1098 | } | |
1099 | ||
dfebf958 NIS |
1100 | PerlIO_funcs PerlIO_utf8 = { |
1101 | "utf8", | |
1102 | sizeof(PerlIOl), | |
26fb694e NIS |
1103 | PERLIO_K_DUMMY|PERLIO_F_UTF8, |
1104 | NULL, | |
26fb694e | 1105 | PerlIOUtf8_open, |
26fb694e NIS |
1106 | PerlIOUtf8_pushed, |
1107 | NULL, | |
1108 | NULL, | |
1109 | NULL, | |
1110 | NULL, | |
1111 | NULL, | |
1112 | NULL, | |
1113 | NULL, | |
1114 | NULL, /* flush */ | |
1115 | NULL, /* fill */ | |
1116 | NULL, | |
1117 | NULL, | |
1118 | NULL, | |
1119 | NULL, | |
1120 | NULL, /* get_base */ | |
1121 | NULL, /* get_bufsiz */ | |
1122 | NULL, /* get_ptr */ | |
1123 | NULL, /* get_cnt */ | |
1124 | NULL, /* set_ptrcnt */ | |
1125 | }; | |
1126 | ||
1127 | PerlIO_funcs PerlIO_byte = { | |
1128 | "bytes", | |
1129 | sizeof(PerlIOl), | |
1130 | PERLIO_K_DUMMY, | |
dfebf958 | 1131 | NULL, |
dfebf958 | 1132 | PerlIOUtf8_open, |
dfebf958 NIS |
1133 | PerlIOUtf8_pushed, |
1134 | NULL, | |
1135 | NULL, | |
1136 | NULL, | |
1137 | NULL, | |
1138 | NULL, | |
1139 | NULL, | |
1140 | NULL, | |
1141 | NULL, /* flush */ | |
1142 | NULL, /* fill */ | |
1143 | NULL, | |
1144 | NULL, | |
1145 | NULL, | |
1146 | NULL, | |
1147 | NULL, /* get_base */ | |
1148 | NULL, /* get_bufsiz */ | |
1149 | NULL, /* get_ptr */ | |
1150 | NULL, /* get_cnt */ | |
1151 | NULL, /* set_ptrcnt */ | |
1152 | }; | |
1153 | ||
1154 | PerlIO * | |
ee518936 | 1155 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args) |
dfebf958 | 1156 | { |
4b803d04 | 1157 | PerlIO_funcs *tab = PerlIO_default_btm(); |
ee518936 | 1158 | return (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,old,narg,args); |
dfebf958 NIS |
1159 | } |
1160 | ||
1161 | PerlIO_funcs PerlIO_raw = { | |
1162 | "raw", | |
1163 | sizeof(PerlIOl), | |
4b803d04 | 1164 | PERLIO_K_DUMMY, |
dfebf958 | 1165 | NULL, |
dfebf958 | 1166 | PerlIORaw_open, |
dfebf958 | 1167 | PerlIORaw_pushed, |
26fb694e | 1168 | PerlIOBase_popped, |
dfebf958 NIS |
1169 | NULL, |
1170 | NULL, | |
1171 | NULL, | |
1172 | NULL, | |
1173 | NULL, | |
1174 | NULL, | |
1175 | NULL, /* flush */ | |
1176 | NULL, /* fill */ | |
1177 | NULL, | |
1178 | NULL, | |
1179 | NULL, | |
1180 | NULL, | |
1181 | NULL, /* get_base */ | |
1182 | NULL, /* get_bufsiz */ | |
1183 | NULL, /* get_ptr */ | |
1184 | NULL, /* get_cnt */ | |
1185 | NULL, /* set_ptrcnt */ | |
1186 | }; | |
1187 | /*--------------------------------------------------------------------------------------*/ | |
1188 | /*--------------------------------------------------------------------------------------*/ | |
9e353e3b NIS |
1189 | /* "Methods" of the "base class" */ |
1190 | ||
1191 | IV | |
1192 | PerlIOBase_fileno(PerlIO *f) | |
1193 | { | |
1194 | return PerlIO_fileno(PerlIONext(f)); | |
1195 | } | |
1196 | ||
f5b9d040 NIS |
1197 | char * |
1198 | PerlIO_modestr(PerlIO *f,char *buf) | |
1199 | { | |
1200 | char *s = buf; | |
1201 | IV flags = PerlIOBase(f)->flags; | |
5f1a76d0 NIS |
1202 | if (flags & PERLIO_F_APPEND) |
1203 | { | |
1204 | *s++ = 'a'; | |
1205 | if (flags & PERLIO_F_CANREAD) | |
1206 | { | |
1207 | *s++ = '+'; | |
1208 | } | |
766a733e | 1209 | } |
5f1a76d0 NIS |
1210 | else if (flags & PERLIO_F_CANREAD) |
1211 | { | |
1212 | *s++ = 'r'; | |
1213 | if (flags & PERLIO_F_CANWRITE) | |
1214 | *s++ = '+'; | |
1215 | } | |
1216 | else if (flags & PERLIO_F_CANWRITE) | |
1217 | { | |
1218 | *s++ = 'w'; | |
1219 | if (flags & PERLIO_F_CANREAD) | |
1220 | { | |
1221 | *s++ = '+'; | |
1222 | } | |
1223 | } | |
1224 | #if O_TEXT != O_BINARY | |
1225 | if (!(flags & PERLIO_F_CRLF)) | |
a4d3c1d3 | 1226 | *s++ = 'b'; |
5f1a76d0 | 1227 | #endif |
f5b9d040 NIS |
1228 | *s = '\0'; |
1229 | return buf; | |
1230 | } | |
1231 | ||
76ced9ad | 1232 | IV |
33af2bc7 | 1233 | PerlIOBase_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) |
9e353e3b | 1234 | { |
76ced9ad | 1235 | PerlIOl *l = PerlIOBase(f); |
f5b9d040 NIS |
1236 | const char *omode = mode; |
1237 | char temp[8]; | |
5e2ab84b | 1238 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
76ced9ad | 1239 | l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
f5b9d040 | 1240 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND); |
5e2ab84b NIS |
1241 | if (tab->Set_ptrcnt != NULL) |
1242 | l->flags |= PERLIO_F_FASTGETS; | |
76ced9ad | 1243 | if (mode) |
6f9d8c32 | 1244 | { |
76ced9ad | 1245 | switch (*mode++) |
06da4f11 | 1246 | { |
76ced9ad | 1247 | case 'r': |
f5b9d040 | 1248 | l->flags |= PERLIO_F_CANREAD; |
76ced9ad NIS |
1249 | break; |
1250 | case 'a': | |
f5b9d040 | 1251 | l->flags |= PERLIO_F_APPEND|PERLIO_F_CANWRITE; |
76ced9ad NIS |
1252 | break; |
1253 | case 'w': | |
f5b9d040 | 1254 | l->flags |= PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE; |
76ced9ad NIS |
1255 | break; |
1256 | default: | |
1257 | errno = EINVAL; | |
1258 | return -1; | |
1259 | } | |
1260 | while (*mode) | |
1261 | { | |
1262 | switch (*mode++) | |
1263 | { | |
1264 | case '+': | |
1265 | l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE; | |
1266 | break; | |
1267 | case 'b': | |
f5b9d040 NIS |
1268 | l->flags &= ~PERLIO_F_CRLF; |
1269 | break; | |
1270 | case 't': | |
1271 | l->flags |= PERLIO_F_CRLF; | |
76ced9ad NIS |
1272 | break; |
1273 | default: | |
1274 | errno = EINVAL; | |
1275 | return -1; | |
1276 | } | |
06da4f11 | 1277 | } |
6f9d8c32 | 1278 | } |
76ced9ad NIS |
1279 | else |
1280 | { | |
1281 | if (l->next) | |
1282 | { | |
1283 | l->flags |= l->next->flags & | |
f5b9d040 | 1284 | (PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_TRUNCATE|PERLIO_F_APPEND); |
76ced9ad NIS |
1285 | } |
1286 | } | |
5e2ab84b | 1287 | #if 0 |
4659c93f | 1288 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08"UVxf" (%s)\n", |
f5b9d040 | 1289 | f,PerlIOBase(f)->tab->name,(omode) ? omode : "(Null)", |
a4d3c1d3 | 1290 | l->flags,PerlIO_modestr(f,temp)); |
5e2ab84b | 1291 | #endif |
76ced9ad NIS |
1292 | return 0; |
1293 | } | |
1294 | ||
1295 | IV | |
1296 | PerlIOBase_popped(PerlIO *f) | |
1297 | { | |
1298 | return 0; | |
760ac839 LW |
1299 | } |
1300 | ||
9e353e3b NIS |
1301 | SSize_t |
1302 | PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count) | |
1303 | { | |
a999f61b | 1304 | dTHX; |
9e353e3b | 1305 | Off_t old = PerlIO_tell(f); |
72e44f29 | 1306 | SSize_t done; |
a999f61b | 1307 | PerlIO_push(aTHX_ f,&PerlIO_pending,"r",Nullch,0); |
72e44f29 NIS |
1308 | done = PerlIOBuf_unread(f,vbuf,count); |
1309 | PerlIOSelf(f,PerlIOBuf)->posn = old - done; | |
1310 | return done; | |
9e353e3b NIS |
1311 | } |
1312 | ||
1313 | IV | |
06da4f11 | 1314 | PerlIOBase_noop_ok(PerlIO *f) |
9e353e3b NIS |
1315 | { |
1316 | return 0; | |
1317 | } | |
1318 | ||
1319 | IV | |
06da4f11 NIS |
1320 | PerlIOBase_noop_fail(PerlIO *f) |
1321 | { | |
1322 | return -1; | |
1323 | } | |
1324 | ||
1325 | IV | |
9e353e3b NIS |
1326 | PerlIOBase_close(PerlIO *f) |
1327 | { | |
1328 | IV code = 0; | |
f5b9d040 | 1329 | PerlIO *n = PerlIONext(f); |
9e353e3b NIS |
1330 | if (PerlIO_flush(f) != 0) |
1331 | code = -1; | |
f5b9d040 | 1332 | if (n && (*PerlIOBase(n)->tab->Close)(n) != 0) |
9e353e3b NIS |
1333 | code = -1; |
1334 | PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN); | |
1335 | return code; | |
1336 | } | |
1337 | ||
1338 | IV | |
1339 | PerlIOBase_eof(PerlIO *f) | |
1340 | { | |
1341 | if (f && *f) | |
1342 | { | |
1343 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; | |
1344 | } | |
1345 | return 1; | |
1346 | } | |
1347 | ||
1348 | IV | |
1349 | PerlIOBase_error(PerlIO *f) | |
1350 | { | |
1351 | if (f && *f) | |
1352 | { | |
1353 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; | |
1354 | } | |
1355 | return 1; | |
1356 | } | |
1357 | ||
1358 | void | |
1359 | PerlIOBase_clearerr(PerlIO *f) | |
1360 | { | |
1361 | if (f && *f) | |
1362 | { | |
f5b9d040 NIS |
1363 | PerlIO *n = PerlIONext(f); |
1364 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR|PERLIO_F_EOF); | |
1365 | if (n) | |
1366 | PerlIO_clearerr(n); | |
9e353e3b NIS |
1367 | } |
1368 | } | |
1369 | ||
1370 | void | |
1371 | PerlIOBase_setlinebuf(PerlIO *f) | |
1372 | { | |
1373 | ||
1374 | } | |
1375 | ||
9e353e3b NIS |
1376 | /*--------------------------------------------------------------------------------------*/ |
1377 | /* Bottom-most level for UNIX-like case */ | |
1378 | ||
1379 | typedef struct | |
1380 | { | |
1381 | struct _PerlIO base; /* The generic part */ | |
1382 | int fd; /* UNIX like file descriptor */ | |
1383 | int oflags; /* open/fcntl flags */ | |
1384 | } PerlIOUnix; | |
1385 | ||
6f9d8c32 | 1386 | int |
9e353e3b | 1387 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 1388 | { |
9e353e3b NIS |
1389 | int oflags = -1; |
1390 | switch(*mode) | |
1391 | { | |
1392 | case 'r': | |
1393 | oflags = O_RDONLY; | |
1394 | if (*++mode == '+') | |
1395 | { | |
1396 | oflags = O_RDWR; | |
1397 | mode++; | |
1398 | } | |
1399 | break; | |
1400 | ||
1401 | case 'w': | |
1402 | oflags = O_CREAT|O_TRUNC; | |
1403 | if (*++mode == '+') | |
1404 | { | |
1405 | oflags |= O_RDWR; | |
1406 | mode++; | |
1407 | } | |
1408 | else | |
1409 | oflags |= O_WRONLY; | |
1410 | break; | |
1411 | ||
1412 | case 'a': | |
1413 | oflags = O_CREAT|O_APPEND; | |
1414 | if (*++mode == '+') | |
1415 | { | |
1416 | oflags |= O_RDWR; | |
1417 | mode++; | |
1418 | } | |
1419 | else | |
1420 | oflags |= O_WRONLY; | |
1421 | break; | |
1422 | } | |
83b075c3 NIS |
1423 | if (*mode == 'b') |
1424 | { | |
f5b9d040 NIS |
1425 | oflags |= O_BINARY; |
1426 | oflags &= ~O_TEXT; | |
1427 | mode++; | |
1428 | } | |
1429 | else if (*mode == 't') | |
1430 | { | |
1431 | oflags |= O_TEXT; | |
1432 | oflags &= ~O_BINARY; | |
60382766 NIS |
1433 | mode++; |
1434 | } | |
99efab12 NIS |
1435 | /* Always open in binary mode */ |
1436 | oflags |= O_BINARY; | |
9e353e3b | 1437 | if (*mode || oflags == -1) |
6f9d8c32 | 1438 | { |
9e353e3b NIS |
1439 | errno = EINVAL; |
1440 | oflags = -1; | |
6f9d8c32 | 1441 | } |
9e353e3b NIS |
1442 | return oflags; |
1443 | } | |
1444 | ||
1445 | IV | |
1446 | PerlIOUnix_fileno(PerlIO *f) | |
1447 | { | |
1448 | return PerlIOSelf(f,PerlIOUnix)->fd; | |
1449 | } | |
1450 | ||
4b803d04 NIS |
1451 | IV |
1452 | PerlIOUnix_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) | |
1453 | { | |
1454 | IV code = PerlIOBase_pushed(f,mode,arg,len); | |
1455 | if (*PerlIONext(f)) | |
1456 | { | |
1457 | PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix); | |
1458 | s->fd = PerlIO_fileno(PerlIONext(f)); | |
1459 | s->oflags = PerlIOUnix_oflags(mode); | |
1460 | } | |
1461 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
1462 | return code; | |
1463 | } | |
1464 | ||
9e353e3b | 1465 | PerlIO * |
06da4f11 | 1466 | PerlIOUnix_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b | 1467 | { |
5f1a76d0 | 1468 | dTHX; |
9e353e3b | 1469 | PerlIO *f = NULL; |
c7fc522f NIS |
1470 | if (*mode == 'I') |
1471 | mode++; | |
9e353e3b NIS |
1472 | if (fd >= 0) |
1473 | { | |
1474 | int oflags = PerlIOUnix_oflags(mode); | |
1475 | if (oflags != -1) | |
1476 | { | |
a999f61b | 1477 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),self,mode,Nullch,0),PerlIOUnix); |
9e353e3b NIS |
1478 | s->fd = fd; |
1479 | s->oflags = oflags; | |
9e353e3b NIS |
1480 | } |
1481 | } | |
1482 | return f; | |
1483 | } | |
1484 | ||
1485 | PerlIO * | |
ee518936 | 1486 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
9e353e3b | 1487 | { |
ee518936 | 1488 | if (f) |
9e353e3b | 1489 | { |
ee518936 NIS |
1490 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
1491 | (*PerlIOBase(f)->tab->Close)(f); | |
1492 | } | |
1493 | if (narg > 0) | |
1494 | { | |
1495 | char *path = SvPV_nolen(*args); | |
1496 | if (*mode == '#') | |
1497 | mode++; | |
1498 | else | |
9e353e3b | 1499 | { |
ee518936 NIS |
1500 | imode = PerlIOUnix_oflags(mode); |
1501 | perm = 0666; | |
1502 | } | |
1503 | if (imode != -1) | |
1504 | { | |
1505 | fd = PerlLIO_open3(path,imode,perm); | |
9e353e3b NIS |
1506 | } |
1507 | } | |
ee518936 | 1508 | if (fd >= 0) |
9e353e3b | 1509 | { |
ee518936 NIS |
1510 | PerlIOUnix *s; |
1511 | if (*mode == 'I') | |
1512 | mode++; | |
1513 | if (!f) | |
9e353e3b | 1514 | { |
ee518936 | 1515 | f = PerlIO_allocate(aTHX); |
a999f61b | 1516 | s = PerlIOSelf(PerlIO_push(aTHX_ f,self,mode,Nullch,0),PerlIOUnix); |
ee518936 NIS |
1517 | } |
1518 | else | |
1519 | s = PerlIOSelf(f,PerlIOUnix); | |
1520 | s->fd = fd; | |
1521 | s->oflags = imode; | |
1522 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
1523 | return f; | |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | if (f) | |
1528 | { | |
1529 | /* FIXME: pop layers ??? */ | |
9e353e3b | 1530 | } |
ee518936 | 1531 | return NULL; |
9e353e3b | 1532 | } |
9e353e3b NIS |
1533 | } |
1534 | ||
1535 | SSize_t | |
1536 | PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count) | |
1537 | { | |
adb71456 | 1538 | dTHX; |
9e353e3b | 1539 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
8f24bd79 NIS |
1540 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
1541 | return 0; | |
9e353e3b NIS |
1542 | while (1) |
1543 | { | |
00b02797 | 1544 | SSize_t len = PerlLIO_read(fd,vbuf,count); |
9e353e3b | 1545 | if (len >= 0 || errno != EINTR) |
06da4f11 NIS |
1546 | { |
1547 | if (len < 0) | |
1548 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
1549 | else if (len == 0 && count != 0) | |
1550 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
1551 | return len; | |
1552 | } | |
0a8e0eff | 1553 | PERL_ASYNC_CHECK(); |
9e353e3b NIS |
1554 | } |
1555 | } | |
1556 | ||
1557 | SSize_t | |
1558 | PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count) | |
1559 | { | |
adb71456 | 1560 | dTHX; |
9e353e3b NIS |
1561 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1562 | while (1) | |
1563 | { | |
00b02797 | 1564 | SSize_t len = PerlLIO_write(fd,vbuf,count); |
9e353e3b | 1565 | if (len >= 0 || errno != EINTR) |
06da4f11 NIS |
1566 | { |
1567 | if (len < 0) | |
1568 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
1569 | return len; | |
1570 | } | |
0a8e0eff | 1571 | PERL_ASYNC_CHECK(); |
9e353e3b NIS |
1572 | } |
1573 | } | |
1574 | ||
1575 | IV | |
1576 | PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence) | |
1577 | { | |
adb71456 | 1578 | dTHX; |
00b02797 | 1579 | Off_t new = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence); |
06da4f11 | 1580 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
9e353e3b NIS |
1581 | return (new == (Off_t) -1) ? -1 : 0; |
1582 | } | |
1583 | ||
1584 | Off_t | |
1585 | PerlIOUnix_tell(PerlIO *f) | |
1586 | { | |
adb71456 | 1587 | dTHX; |
766a733e | 1588 | Off_t posn = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
00b02797 | 1589 | return PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
9e353e3b NIS |
1590 | } |
1591 | ||
1592 | IV | |
1593 | PerlIOUnix_close(PerlIO *f) | |
1594 | { | |
adb71456 | 1595 | dTHX; |
9e353e3b NIS |
1596 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1597 | int code = 0; | |
00b02797 | 1598 | while (PerlLIO_close(fd) != 0) |
9e353e3b NIS |
1599 | { |
1600 | if (errno != EINTR) | |
1601 | { | |
1602 | code = -1; | |
1603 | break; | |
1604 | } | |
0a8e0eff | 1605 | PERL_ASYNC_CHECK(); |
9e353e3b NIS |
1606 | } |
1607 | if (code == 0) | |
1608 | { | |
1609 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
1610 | } | |
1611 | return code; | |
1612 | } | |
1613 | ||
1614 | PerlIO_funcs PerlIO_unix = { | |
1615 | "unix", | |
1616 | sizeof(PerlIOUnix), | |
f5b9d040 | 1617 | PERLIO_K_RAW, |
9e353e3b | 1618 | PerlIOUnix_fileno, |
9e353e3b | 1619 | PerlIOUnix_open, |
4b803d04 | 1620 | PerlIOUnix_pushed, |
06da4f11 | 1621 | PerlIOBase_noop_ok, |
9e353e3b NIS |
1622 | PerlIOUnix_read, |
1623 | PerlIOBase_unread, | |
1624 | PerlIOUnix_write, | |
1625 | PerlIOUnix_seek, | |
1626 | PerlIOUnix_tell, | |
1627 | PerlIOUnix_close, | |
76ced9ad NIS |
1628 | PerlIOBase_noop_ok, /* flush */ |
1629 | PerlIOBase_noop_fail, /* fill */ | |
9e353e3b NIS |
1630 | PerlIOBase_eof, |
1631 | PerlIOBase_error, | |
1632 | PerlIOBase_clearerr, | |
1633 | PerlIOBase_setlinebuf, | |
1634 | NULL, /* get_base */ | |
1635 | NULL, /* get_bufsiz */ | |
1636 | NULL, /* get_ptr */ | |
1637 | NULL, /* get_cnt */ | |
1638 | NULL, /* set_ptrcnt */ | |
1639 | }; | |
1640 | ||
1641 | /*--------------------------------------------------------------------------------------*/ | |
1642 | /* stdio as a layer */ | |
1643 | ||
1644 | typedef struct | |
1645 | { | |
1646 | struct _PerlIO base; | |
1647 | FILE * stdio; /* The stream */ | |
1648 | } PerlIOStdio; | |
1649 | ||
1650 | IV | |
1651 | PerlIOStdio_fileno(PerlIO *f) | |
1652 | { | |
adb71456 | 1653 | dTHX; |
eaf8b698 | 1654 | return PerlSIO_fileno(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1655 | } |
1656 | ||
766a733e | 1657 | char * |
f5b9d040 NIS |
1658 | PerlIOStdio_mode(const char *mode,char *tmode) |
1659 | { | |
766a733e NIS |
1660 | char *ret = tmode; |
1661 | while (*mode) | |
1662 | { | |
1663 | *tmode++ = *mode++; | |
1664 | } | |
f5b9d040 NIS |
1665 | if (O_BINARY != O_TEXT) |
1666 | { | |
f5b9d040 | 1667 | *tmode++ = 'b'; |
f5b9d040 | 1668 | } |
766a733e | 1669 | *tmode = '\0'; |
f5b9d040 NIS |
1670 | return ret; |
1671 | } | |
9e353e3b NIS |
1672 | |
1673 | PerlIO * | |
06da4f11 | 1674 | PerlIOStdio_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b | 1675 | { |
adb71456 | 1676 | dTHX; |
9e353e3b | 1677 | PerlIO *f = NULL; |
c7fc522f | 1678 | int init = 0; |
f5b9d040 | 1679 | char tmode[8]; |
9e353e3b NIS |
1680 | } |
1681 | ||
4b803d04 NIS |
1682 | /* This isn't used yet ... */ |
1683 | IV | |
1684 | PerlIOStdio_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) | |
1685 | { | |
b86471a1 | 1686 | dTHX; |
4b803d04 NIS |
1687 | if (*PerlIONext(f)) |
1688 | { | |
1689 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); | |
1690 | char tmode[8]; | |
1691 | FILE *stdio = PerlSIO_fdopen(PerlIO_fileno(PerlIONext(f)),mode = PerlIOStdio_mode(mode,tmode)); | |
1692 | if (stdio) | |
1693 | s->stdio = stdio; | |
1694 | else | |
1695 | return -1; | |
1696 | } | |
1697 | return PerlIOBase_pushed(f,mode,arg,len); | |
1698 | } | |
1699 | ||
9e353e3b NIS |
1700 | #undef PerlIO_importFILE |
1701 | PerlIO * | |
1702 | PerlIO_importFILE(FILE *stdio, int fl) | |
1703 | { | |
5f1a76d0 | 1704 | dTHX; |
9e353e3b NIS |
1705 | PerlIO *f = NULL; |
1706 | if (stdio) | |
1707 | { | |
a999f61b | 1708 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),&PerlIO_stdio,"r+",Nullch,0),PerlIOStdio); |
9e353e3b NIS |
1709 | s->stdio = stdio; |
1710 | } | |
1711 | return f; | |
1712 | } | |
1713 | ||
1714 | PerlIO * | |
ee518936 | 1715 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
9e353e3b | 1716 | { |
ee518936 NIS |
1717 | char tmode[8]; |
1718 | if (f) | |
9e353e3b | 1719 | { |
ee518936 NIS |
1720 | char *path = SvPV_nolen(*args); |
1721 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); | |
1722 | FILE *stdio = PerlSIO_freopen(path,(mode = PerlIOStdio_mode(mode,tmode)),s->stdio); | |
1723 | if (!s->stdio) | |
1724 | return NULL; | |
1725 | s->stdio = stdio; | |
1726 | return f; | |
9e353e3b | 1727 | } |
ee518936 NIS |
1728 | else |
1729 | { | |
1730 | if (narg > 0) | |
1731 | { | |
1732 | char *path = SvPV_nolen(*args); | |
1733 | if (*mode == '#') | |
1734 | { | |
1735 | mode++; | |
1736 | fd = PerlLIO_open3(path,imode,perm); | |
1737 | } | |
1738 | else | |
1739 | { | |
1740 | FILE *stdio = PerlSIO_fopen(path,mode); | |
1741 | if (stdio) | |
1742 | { | |
a999f61b | 1743 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)), self, |
ee518936 NIS |
1744 | (mode = PerlIOStdio_mode(mode,tmode)),Nullch,0), |
1745 | PerlIOStdio); | |
1746 | s->stdio = stdio; | |
1747 | } | |
1748 | return f; | |
1749 | } | |
1750 | } | |
1751 | if (fd >= 0) | |
1752 | { | |
1753 | FILE *stdio = NULL; | |
1754 | int init = 0; | |
1755 | if (*mode == 'I') | |
1756 | { | |
1757 | init = 1; | |
1758 | mode++; | |
1759 | } | |
1760 | if (init) | |
1761 | { | |
1762 | switch(fd) | |
1763 | { | |
1764 | case 0: | |
1765 | stdio = PerlSIO_stdin; | |
1766 | break; | |
1767 | case 1: | |
1768 | stdio = PerlSIO_stdout; | |
1769 | break; | |
1770 | case 2: | |
1771 | stdio = PerlSIO_stderr; | |
1772 | break; | |
1773 | } | |
1774 | } | |
1775 | else | |
1776 | { | |
1777 | stdio = PerlSIO_fdopen(fd,mode = PerlIOStdio_mode(mode,tmode)); | |
1778 | } | |
1779 | if (stdio) | |
1780 | { | |
a999f61b | 1781 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),self,mode,Nullch,0),PerlIOStdio); |
ee518936 NIS |
1782 | s->stdio = stdio; |
1783 | return f; | |
1784 | } | |
1785 | } | |
1786 | } | |
1787 | return NULL; | |
9e353e3b NIS |
1788 | } |
1789 | ||
1790 | SSize_t | |
1791 | PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count) | |
1792 | { | |
adb71456 | 1793 | dTHX; |
9e353e3b | 1794 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
c7fc522f | 1795 | SSize_t got = 0; |
9e353e3b NIS |
1796 | if (count == 1) |
1797 | { | |
1798 | STDCHAR *buf = (STDCHAR *) vbuf; | |
1799 | /* Perl is expecting PerlIO_getc() to fill the buffer | |
1800 | * Linux's stdio does not do that for fread() | |
1801 | */ | |
eaf8b698 | 1802 | int ch = PerlSIO_fgetc(s); |
9e353e3b NIS |
1803 | if (ch != EOF) |
1804 | { | |
1805 | *buf = ch; | |
c7fc522f | 1806 | got = 1; |
9e353e3b | 1807 | } |
9e353e3b | 1808 | } |
c7fc522f | 1809 | else |
eaf8b698 | 1810 | got = PerlSIO_fread(vbuf,1,count,s); |
c7fc522f | 1811 | return got; |
9e353e3b NIS |
1812 | } |
1813 | ||
1814 | SSize_t | |
1815 | PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count) | |
1816 | { | |
adb71456 | 1817 | dTHX; |
9e353e3b NIS |
1818 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
1819 | STDCHAR *buf = ((STDCHAR *)vbuf)+count-1; | |
1820 | SSize_t unread = 0; | |
1821 | while (count > 0) | |
1822 | { | |
1823 | int ch = *buf-- & 0xff; | |
eaf8b698 | 1824 | if (PerlSIO_ungetc(ch,s) != ch) |
9e353e3b NIS |
1825 | break; |
1826 | unread++; | |
1827 | count--; | |
1828 | } | |
1829 | return unread; | |
1830 | } | |
1831 | ||
1832 | SSize_t | |
1833 | PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count) | |
1834 | { | |
adb71456 | 1835 | dTHX; |
eaf8b698 | 1836 | return PerlSIO_fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1837 | } |
1838 | ||
1839 | IV | |
1840 | PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence) | |
1841 | { | |
adb71456 | 1842 | dTHX; |
c7fc522f | 1843 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1844 | return PerlSIO_fseek(stdio,offset,whence); |
9e353e3b NIS |
1845 | } |
1846 | ||
1847 | Off_t | |
1848 | PerlIOStdio_tell(PerlIO *f) | |
1849 | { | |
adb71456 | 1850 | dTHX; |
c7fc522f | 1851 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1852 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
1853 | } |
1854 | ||
1855 | IV | |
1856 | PerlIOStdio_close(PerlIO *f) | |
1857 | { | |
adb71456 | 1858 | dTHX; |
405b3941 | 1859 | #ifdef HAS_SOCKS5_INIT |
cf829ab0 | 1860 | int optval, optlen = sizeof(int); |
8e4bc33b | 1861 | #endif |
3789aae2 | 1862 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
cf829ab0 | 1863 | return( |
405b3941 | 1864 | #ifdef HAS_SOCKS5_INIT |
a4d3c1d3 | 1865 | (getsockopt(PerlIO_fileno(f), SOL_SOCKET, SO_TYPE, (char *)&optval, &optlen) < 0) ? |
eaf8b698 | 1866 | PerlSIO_fclose(stdio) : |
8e4bc33b YST |
1867 | close(PerlIO_fileno(f)) |
1868 | #else | |
1869 | PerlSIO_fclose(stdio) | |
1870 | #endif | |
1871 | ); | |
1872 | ||
9e353e3b NIS |
1873 | } |
1874 | ||
1875 | IV | |
1876 | PerlIOStdio_flush(PerlIO *f) | |
1877 | { | |
adb71456 | 1878 | dTHX; |
9e353e3b | 1879 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
88b61e10 NIS |
1880 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) |
1881 | { | |
eaf8b698 | 1882 | return PerlSIO_fflush(stdio); |
88b61e10 NIS |
1883 | } |
1884 | else | |
1885 | { | |
1886 | #if 0 | |
1887 | /* FIXME: This discards ungetc() and pre-read stuff which is | |
1888 | not right if this is just a "sync" from a layer above | |
1889 | Suspect right design is to do _this_ but not have layer above | |
1890 | flush this layer read-to-read | |
1891 | */ | |
1892 | /* Not writeable - sync by attempting a seek */ | |
1893 | int err = errno; | |
eaf8b698 | 1894 | if (PerlSIO_fseek(stdio,(Off_t) 0, SEEK_CUR) != 0) |
88b61e10 NIS |
1895 | errno = err; |
1896 | #endif | |
1897 | } | |
1898 | return 0; | |
9e353e3b NIS |
1899 | } |
1900 | ||
1901 | IV | |
06da4f11 NIS |
1902 | PerlIOStdio_fill(PerlIO *f) |
1903 | { | |
adb71456 | 1904 | dTHX; |
06da4f11 NIS |
1905 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1906 | int c; | |
3789aae2 NIS |
1907 | /* fflush()ing read-only streams can cause trouble on some stdio-s */ |
1908 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
1909 | { | |
eaf8b698 | 1910 | if (PerlSIO_fflush(stdio) != 0) |
3789aae2 NIS |
1911 | return EOF; |
1912 | } | |
eaf8b698 NIS |
1913 | c = PerlSIO_fgetc(stdio); |
1914 | if (c == EOF || PerlSIO_ungetc(c,stdio) != c) | |
06da4f11 NIS |
1915 | return EOF; |
1916 | return 0; | |
1917 | } | |
1918 | ||
1919 | IV | |
9e353e3b NIS |
1920 | PerlIOStdio_eof(PerlIO *f) |
1921 | { | |
adb71456 | 1922 | dTHX; |
eaf8b698 | 1923 | return PerlSIO_feof(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1924 | } |
1925 | ||
1926 | IV | |
1927 | PerlIOStdio_error(PerlIO *f) | |
1928 | { | |
adb71456 | 1929 | dTHX; |
eaf8b698 | 1930 | return PerlSIO_ferror(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1931 | } |
1932 | ||
1933 | void | |
1934 | PerlIOStdio_clearerr(PerlIO *f) | |
1935 | { | |
adb71456 | 1936 | dTHX; |
eaf8b698 | 1937 | PerlSIO_clearerr(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1938 | } |
1939 | ||
1940 | void | |
1941 | PerlIOStdio_setlinebuf(PerlIO *f) | |
1942 | { | |
adb71456 | 1943 | dTHX; |
9e353e3b | 1944 | #ifdef HAS_SETLINEBUF |
eaf8b698 | 1945 | PerlSIO_setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b | 1946 | #else |
eaf8b698 | 1947 | PerlSIO_setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0); |
9e353e3b NIS |
1948 | #endif |
1949 | } | |
1950 | ||
1951 | #ifdef FILE_base | |
1952 | STDCHAR * | |
1953 | PerlIOStdio_get_base(PerlIO *f) | |
1954 | { | |
adb71456 | 1955 | dTHX; |
9e353e3b | 1956 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1957 | return PerlSIO_get_base(stdio); |
9e353e3b NIS |
1958 | } |
1959 | ||
1960 | Size_t | |
1961 | PerlIOStdio_get_bufsiz(PerlIO *f) | |
1962 | { | |
adb71456 | 1963 | dTHX; |
9e353e3b | 1964 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1965 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
1966 | } |
1967 | #endif | |
1968 | ||
1969 | #ifdef USE_STDIO_PTR | |
1970 | STDCHAR * | |
1971 | PerlIOStdio_get_ptr(PerlIO *f) | |
1972 | { | |
adb71456 | 1973 | dTHX; |
9e353e3b | 1974 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1975 | return PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
1976 | } |
1977 | ||
1978 | SSize_t | |
1979 | PerlIOStdio_get_cnt(PerlIO *f) | |
1980 | { | |
adb71456 | 1981 | dTHX; |
9e353e3b | 1982 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1983 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
1984 | } |
1985 | ||
1986 | void | |
1987 | PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt) | |
1988 | { | |
adb71456 | 1989 | dTHX; |
9e353e3b NIS |
1990 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1991 | if (ptr != NULL) | |
1992 | { | |
1993 | #ifdef STDIO_PTR_LVALUE | |
eaf8b698 | 1994 | PerlSIO_set_ptr(stdio,ptr); |
9e353e3b | 1995 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
eaf8b698 | 1996 | if (PerlSIO_get_cnt(stdio) != (cnt)) |
9e353e3b NIS |
1997 | { |
1998 | dTHX; | |
eaf8b698 | 1999 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
2000 | } |
2001 | #endif | |
2002 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
2003 | /* Setting ptr _does_ change cnt - we are done */ | |
2004 | return; | |
2005 | #endif | |
2006 | #else /* STDIO_PTR_LVALUE */ | |
eaf8b698 | 2007 | PerlProc_abort(); |
9e353e3b NIS |
2008 | #endif /* STDIO_PTR_LVALUE */ |
2009 | } | |
2010 | /* Now (or only) set cnt */ | |
2011 | #ifdef STDIO_CNT_LVALUE | |
eaf8b698 | 2012 | PerlSIO_set_cnt(stdio,cnt); |
9e353e3b NIS |
2013 | #else /* STDIO_CNT_LVALUE */ |
2014 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) | |
eaf8b698 | 2015 | PerlSIO_set_ptr(stdio,PerlSIO_get_ptr(stdio)+(PerlSIO_get_cnt(stdio)-cnt)); |
9e353e3b | 2016 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
eaf8b698 | 2017 | PerlProc_abort(); |
9e353e3b NIS |
2018 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
2019 | #endif /* STDIO_CNT_LVALUE */ | |
2020 | } | |
2021 | ||
2022 | #endif | |
2023 | ||
2024 | PerlIO_funcs PerlIO_stdio = { | |
2025 | "stdio", | |
2026 | sizeof(PerlIOStdio), | |
f5b9d040 | 2027 | PERLIO_K_BUFFERED, |
9e353e3b | 2028 | PerlIOStdio_fileno, |
9e353e3b | 2029 | PerlIOStdio_open, |
06da4f11 NIS |
2030 | PerlIOBase_pushed, |
2031 | PerlIOBase_noop_ok, | |
9e353e3b NIS |
2032 | PerlIOStdio_read, |
2033 | PerlIOStdio_unread, | |
2034 | PerlIOStdio_write, | |
2035 | PerlIOStdio_seek, | |
2036 | PerlIOStdio_tell, | |
2037 | PerlIOStdio_close, | |
2038 | PerlIOStdio_flush, | |
06da4f11 | 2039 | PerlIOStdio_fill, |
9e353e3b NIS |
2040 | PerlIOStdio_eof, |
2041 | PerlIOStdio_error, | |
2042 | PerlIOStdio_clearerr, | |
2043 | PerlIOStdio_setlinebuf, | |
2044 | #ifdef FILE_base | |
2045 | PerlIOStdio_get_base, | |
2046 | PerlIOStdio_get_bufsiz, | |
2047 | #else | |
2048 | NULL, | |
2049 | NULL, | |
2050 | #endif | |
2051 | #ifdef USE_STDIO_PTR | |
2052 | PerlIOStdio_get_ptr, | |
2053 | PerlIOStdio_get_cnt, | |
0eb1d8a4 | 2054 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) |
9e353e3b NIS |
2055 | PerlIOStdio_set_ptrcnt |
2056 | #else /* STDIO_PTR_LVALUE */ | |
2057 | NULL | |
2058 | #endif /* STDIO_PTR_LVALUE */ | |
2059 | #else /* USE_STDIO_PTR */ | |
2060 | NULL, | |
2061 | NULL, | |
2062 | NULL | |
2063 | #endif /* USE_STDIO_PTR */ | |
2064 | }; | |
2065 | ||
2066 | #undef PerlIO_exportFILE | |
2067 | FILE * | |
2068 | PerlIO_exportFILE(PerlIO *f, int fl) | |
2069 | { | |
f7e7eb72 | 2070 | FILE *stdio; |
9e353e3b | 2071 | PerlIO_flush(f); |
f7e7eb72 NIS |
2072 | stdio = fdopen(PerlIO_fileno(f),"r+"); |
2073 | if (stdio) | |
2074 | { | |
a999f61b NIS |
2075 | dTHX; |
2076 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ f,&PerlIO_stdio,"r+",Nullch,0),PerlIOStdio); | |
f7e7eb72 NIS |
2077 | s->stdio = stdio; |
2078 | } | |
2079 | return stdio; | |
9e353e3b NIS |
2080 | } |
2081 | ||
2082 | #undef PerlIO_findFILE | |
2083 | FILE * | |
2084 | PerlIO_findFILE(PerlIO *f) | |
2085 | { | |
f7e7eb72 NIS |
2086 | PerlIOl *l = *f; |
2087 | while (l) | |
2088 | { | |
2089 | if (l->tab == &PerlIO_stdio) | |
2090 | { | |
2091 | PerlIOStdio *s = PerlIOSelf(&l,PerlIOStdio); | |
2092 | return s->stdio; | |
2093 | } | |
2094 | l = *PerlIONext(&l); | |
2095 | } | |
9e353e3b NIS |
2096 | return PerlIO_exportFILE(f,0); |
2097 | } | |
2098 | ||
2099 | #undef PerlIO_releaseFILE | |
2100 | void | |
2101 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
2102 | { | |
2103 | } | |
2104 | ||
2105 | /*--------------------------------------------------------------------------------------*/ | |
2106 | /* perlio buffer layer */ | |
2107 | ||
5e2ab84b | 2108 | IV |
33af2bc7 | 2109 | PerlIOBuf_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) |
5e2ab84b NIS |
2110 | { |
2111 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
1f474064 NIS |
2112 | int fd = PerlIO_fileno(f); |
2113 | Off_t posn; | |
2114 | if (fd >= 0 && PerlLIO_isatty(fd)) | |
2115 | { | |
2116 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
2117 | } | |
2118 | posn = PerlIO_tell(PerlIONext(f)); | |
2119 | if (posn != (Off_t) -1) | |
2120 | { | |
2121 | b->posn = posn; | |
2122 | } | |
33af2bc7 | 2123 | return PerlIOBase_pushed(f,mode,arg,len); |
5e2ab84b NIS |
2124 | } |
2125 | ||
9e353e3b | 2126 | PerlIO * |
ee518936 | 2127 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
9e353e3b | 2128 | { |
6f9d8c32 NIS |
2129 | if (f) |
2130 | { | |
ee518936 NIS |
2131 | PerlIO *next = PerlIONext(f); |
2132 | PerlIO_funcs *tab = PerlIOBase(next)->tab; | |
2133 | next = (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,next,narg,args); | |
2134 | if (!next || (*PerlIOBase(f)->tab->Pushed)(f,mode,Nullch,0) != 0) | |
c7fc522f | 2135 | { |
ee518936 | 2136 | return NULL; |
a4d3c1d3 | 2137 | } |
6f9d8c32 | 2138 | } |
ee518936 | 2139 | else |
9e353e3b | 2140 | { |
ee518936 NIS |
2141 | PerlIO_funcs *tab = PerlIO_default_btm(); |
2142 | int init = 0; | |
2143 | if (*mode == 'I') | |
2144 | { | |
2145 | init = 1; | |
2146 | mode++; | |
2147 | } | |
2148 | f = (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,NULL,narg,args); | |
2149 | if (f) | |
2150 | { | |
a999f61b | 2151 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(aTHX_ f,self,mode,Nullch,0),PerlIOBuf); |
ee518936 NIS |
2152 | fd = PerlIO_fileno(f); |
2153 | #if O_BINARY != O_TEXT | |
2154 | /* do something about failing setmode()? --jhi */ | |
2155 | PerlLIO_setmode(fd , O_BINARY); | |
2156 | #endif | |
2157 | if (init && fd == 2) | |
2158 | { | |
2159 | /* Initial stderr is unbuffered */ | |
2160 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
2161 | } | |
2162 | } | |
9e353e3b NIS |
2163 | } |
2164 | return f; | |
2165 | } | |
2166 | ||
9e353e3b NIS |
2167 | /* This "flush" is akin to sfio's sync in that it handles files in either |
2168 | read or write state | |
2169 | */ | |
2170 | IV | |
2171 | PerlIOBuf_flush(PerlIO *f) | |
6f9d8c32 | 2172 | { |
9e353e3b NIS |
2173 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2174 | int code = 0; | |
2175 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
2176 | { | |
2177 | /* write() the buffer */ | |
a5262162 | 2178 | STDCHAR *buf = b->buf; |
33af2bc7 | 2179 | STDCHAR *p = buf; |
3789aae2 | 2180 | PerlIO *n = PerlIONext(f); |
9e353e3b NIS |
2181 | while (p < b->ptr) |
2182 | { | |
4b803d04 | 2183 | SSize_t count = PerlIO_write(n,p,b->ptr - p); |
9e353e3b NIS |
2184 | if (count > 0) |
2185 | { | |
2186 | p += count; | |
2187 | } | |
3789aae2 | 2188 | else if (count < 0 || PerlIO_error(n)) |
9e353e3b NIS |
2189 | { |
2190 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2191 | code = -1; | |
2192 | break; | |
2193 | } | |
2194 | } | |
33af2bc7 | 2195 | b->posn += (p - buf); |
9e353e3b NIS |
2196 | } |
2197 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
6f9d8c32 | 2198 | { |
33af2bc7 | 2199 | STDCHAR *buf = PerlIO_get_base(f); |
9e353e3b | 2200 | /* Note position change */ |
33af2bc7 | 2201 | b->posn += (b->ptr - buf); |
9e353e3b NIS |
2202 | if (b->ptr < b->end) |
2203 | { | |
2204 | /* We did not consume all of it */ | |
2205 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0) | |
2206 | { | |
2207 | b->posn = PerlIO_tell(PerlIONext(f)); | |
2208 | } | |
2209 | } | |
6f9d8c32 | 2210 | } |
9e353e3b NIS |
2211 | b->ptr = b->end = b->buf; |
2212 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); | |
88b61e10 | 2213 | /* FIXME: Is this right for read case ? */ |
9e353e3b NIS |
2214 | if (PerlIO_flush(PerlIONext(f)) != 0) |
2215 | code = -1; | |
2216 | return code; | |
6f9d8c32 NIS |
2217 | } |
2218 | ||
06da4f11 NIS |
2219 | IV |
2220 | PerlIOBuf_fill(PerlIO *f) | |
2221 | { | |
2222 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
88b61e10 | 2223 | PerlIO *n = PerlIONext(f); |
06da4f11 | 2224 | SSize_t avail; |
88b61e10 NIS |
2225 | /* FIXME: doing the down-stream flush is a bad idea if it causes |
2226 | pre-read data in stdio buffer to be discarded | |
2227 | but this is too simplistic - as it skips _our_ hosekeeping | |
2228 | and breaks tell tests. | |
2229 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) | |
2230 | { | |
2231 | } | |
2232 | */ | |
06da4f11 NIS |
2233 | if (PerlIO_flush(f) != 0) |
2234 | return -1; | |
88b61e10 | 2235 | |
a5262162 NIS |
2236 | if (!b->buf) |
2237 | PerlIO_get_base(f); /* allocate via vtable */ | |
2238 | ||
2239 | b->ptr = b->end = b->buf; | |
88b61e10 NIS |
2240 | if (PerlIO_fast_gets(n)) |
2241 | { | |
2242 | /* Layer below is also buffered | |
2243 | * We do _NOT_ want to call its ->Read() because that will loop | |
2244 | * till it gets what we asked for which may hang on a pipe etc. | |
2245 | * Instead take anything it has to hand, or ask it to fill _once_. | |
2246 | */ | |
2247 | avail = PerlIO_get_cnt(n); | |
2248 | if (avail <= 0) | |
2249 | { | |
2250 | avail = PerlIO_fill(n); | |
2251 | if (avail == 0) | |
2252 | avail = PerlIO_get_cnt(n); | |
2253 | else | |
2254 | { | |
2255 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
2256 | avail = 0; | |
2257 | } | |
2258 | } | |
2259 | if (avail > 0) | |
2260 | { | |
2261 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
2262 | SSize_t cnt = avail; | |
2263 | if (avail > b->bufsiz) | |
2264 | avail = b->bufsiz; | |
2265 | Copy(ptr,b->buf,avail,STDCHAR); | |
2266 | PerlIO_set_ptrcnt(n,ptr+avail,cnt-avail); | |
2267 | } | |
2268 | } | |
2269 | else | |
2270 | { | |
2271 | avail = PerlIO_read(n,b->ptr,b->bufsiz); | |
2272 | } | |
06da4f11 NIS |
2273 | if (avail <= 0) |
2274 | { | |
2275 | if (avail == 0) | |
2276 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
2277 | else | |
2278 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2279 | return -1; | |
2280 | } | |
a5262162 | 2281 | b->end = b->buf+avail; |
06da4f11 NIS |
2282 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
2283 | return 0; | |
2284 | } | |
2285 | ||
6f9d8c32 | 2286 | SSize_t |
9e353e3b | 2287 | PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 2288 | { |
99efab12 NIS |
2289 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2290 | STDCHAR *buf = (STDCHAR *) vbuf; | |
6f9d8c32 NIS |
2291 | if (f) |
2292 | { | |
9e353e3b | 2293 | if (!b->ptr) |
06da4f11 | 2294 | PerlIO_get_base(f); |
9e353e3b | 2295 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
f89522bf | 2296 | return 0; |
6f9d8c32 NIS |
2297 | while (count > 0) |
2298 | { | |
99efab12 | 2299 | SSize_t avail = PerlIO_get_cnt(f); |
60382766 | 2300 | SSize_t take = (count < avail) ? count : avail; |
99efab12 | 2301 | if (take > 0) |
6f9d8c32 | 2302 | { |
99efab12 NIS |
2303 | STDCHAR *ptr = PerlIO_get_ptr(f); |
2304 | Copy(ptr,buf,take,STDCHAR); | |
2305 | PerlIO_set_ptrcnt(f,ptr+take,(avail -= take)); | |
2306 | count -= take; | |
2307 | buf += take; | |
6f9d8c32 | 2308 | } |
99efab12 | 2309 | if (count > 0 && avail <= 0) |
6f9d8c32 | 2310 | { |
06da4f11 NIS |
2311 | if (PerlIO_fill(f) != 0) |
2312 | break; | |
6f9d8c32 NIS |
2313 | } |
2314 | } | |
99efab12 | 2315 | return (buf - (STDCHAR *) vbuf); |
6f9d8c32 NIS |
2316 | } |
2317 | return 0; | |
2318 | } | |
2319 | ||
9e353e3b NIS |
2320 | SSize_t |
2321 | PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 2322 | { |
9e353e3b NIS |
2323 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
2324 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2325 | SSize_t unread = 0; | |
2326 | SSize_t avail; | |
9e353e3b NIS |
2327 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
2328 | PerlIO_flush(f); | |
06da4f11 NIS |
2329 | if (!b->buf) |
2330 | PerlIO_get_base(f); | |
9e353e3b NIS |
2331 | if (b->buf) |
2332 | { | |
2333 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
2334 | { | |
2335 | avail = (b->ptr - b->buf); | |
9e353e3b NIS |
2336 | } |
2337 | else | |
2338 | { | |
2339 | avail = b->bufsiz; | |
5e2ab84b NIS |
2340 | b->end = b->buf + avail; |
2341 | b->ptr = b->end; | |
2342 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
2343 | b->posn -= b->bufsiz; | |
9e353e3b | 2344 | } |
5e2ab84b NIS |
2345 | if (avail > (SSize_t) count) |
2346 | avail = count; | |
9e353e3b NIS |
2347 | if (avail > 0) |
2348 | { | |
5e2ab84b | 2349 | b->ptr -= avail; |
9e353e3b NIS |
2350 | buf -= avail; |
2351 | if (buf != b->ptr) | |
2352 | { | |
88b61e10 | 2353 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b NIS |
2354 | } |
2355 | count -= avail; | |
2356 | unread += avail; | |
2357 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; | |
2358 | } | |
2359 | } | |
2360 | return unread; | |
760ac839 LW |
2361 | } |
2362 | ||
9e353e3b NIS |
2363 | SSize_t |
2364 | PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 2365 | { |
9e353e3b NIS |
2366 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2367 | const STDCHAR *buf = (const STDCHAR *) vbuf; | |
2368 | Size_t written = 0; | |
2369 | if (!b->buf) | |
06da4f11 | 2370 | PerlIO_get_base(f); |
9e353e3b NIS |
2371 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
2372 | return 0; | |
2373 | while (count > 0) | |
2374 | { | |
2375 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
2376 | if ((SSize_t) count < avail) | |
2377 | avail = count; | |
2378 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; | |
2379 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) | |
2380 | { | |
2381 | while (avail > 0) | |
2382 | { | |
2383 | int ch = *buf++; | |
2384 | *(b->ptr)++ = ch; | |
2385 | count--; | |
2386 | avail--; | |
2387 | written++; | |
2388 | if (ch == '\n') | |
2389 | { | |
2390 | PerlIO_flush(f); | |
2391 | break; | |
2392 | } | |
2393 | } | |
2394 | } | |
2395 | else | |
2396 | { | |
2397 | if (avail) | |
2398 | { | |
88b61e10 | 2399 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b NIS |
2400 | count -= avail; |
2401 | buf += avail; | |
2402 | written += avail; | |
2403 | b->ptr += avail; | |
2404 | } | |
2405 | } | |
2406 | if (b->ptr >= (b->buf + b->bufsiz)) | |
2407 | PerlIO_flush(f); | |
2408 | } | |
f5b9d040 NIS |
2409 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) |
2410 | PerlIO_flush(f); | |
9e353e3b NIS |
2411 | return written; |
2412 | } | |
2413 | ||
2414 | IV | |
2415 | PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence) | |
2416 | { | |
5e2ab84b NIS |
2417 | IV code; |
2418 | if ((code = PerlIO_flush(f)) == 0) | |
9e353e3b | 2419 | { |
5e2ab84b | 2420 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
9e353e3b NIS |
2421 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2422 | code = PerlIO_seek(PerlIONext(f),offset,whence); | |
2423 | if (code == 0) | |
2424 | { | |
2425 | b->posn = PerlIO_tell(PerlIONext(f)); | |
2426 | } | |
2427 | } | |
2428 | return code; | |
2429 | } | |
2430 | ||
2431 | Off_t | |
2432 | PerlIOBuf_tell(PerlIO *f) | |
2433 | { | |
2434 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2435 | Off_t posn = b->posn; | |
2436 | if (b->buf) | |
2437 | posn += (b->ptr - b->buf); | |
2438 | return posn; | |
2439 | } | |
2440 | ||
2441 | IV | |
2442 | PerlIOBuf_close(PerlIO *f) | |
2443 | { | |
5f1a76d0 | 2444 | dTHX; |
9e353e3b NIS |
2445 | IV code = PerlIOBase_close(f); |
2446 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2447 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) | |
6f9d8c32 | 2448 | { |
5f1a76d0 | 2449 | PerlMemShared_free(b->buf); |
6f9d8c32 | 2450 | } |
9e353e3b NIS |
2451 | b->buf = NULL; |
2452 | b->ptr = b->end = b->buf; | |
2453 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); | |
2454 | return code; | |
760ac839 LW |
2455 | } |
2456 | ||
760ac839 | 2457 | void |
9e353e3b | 2458 | PerlIOBuf_setlinebuf(PerlIO *f) |
760ac839 | 2459 | { |
6f9d8c32 NIS |
2460 | if (f) |
2461 | { | |
9e353e3b | 2462 | PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF; |
6f9d8c32 | 2463 | } |
760ac839 LW |
2464 | } |
2465 | ||
9e353e3b NIS |
2466 | STDCHAR * |
2467 | PerlIOBuf_get_ptr(PerlIO *f) | |
2468 | { | |
2469 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2470 | if (!b->buf) | |
06da4f11 | 2471 | PerlIO_get_base(f); |
9e353e3b NIS |
2472 | return b->ptr; |
2473 | } | |
2474 | ||
05d1247b | 2475 | SSize_t |
9e353e3b NIS |
2476 | PerlIOBuf_get_cnt(PerlIO *f) |
2477 | { | |
2478 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2479 | if (!b->buf) | |
06da4f11 | 2480 | PerlIO_get_base(f); |
9e353e3b NIS |
2481 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
2482 | return (b->end - b->ptr); | |
2483 | return 0; | |
2484 | } | |
2485 | ||
2486 | STDCHAR * | |
2487 | PerlIOBuf_get_base(PerlIO *f) | |
2488 | { | |
2489 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2490 | if (!b->buf) | |
06da4f11 | 2491 | { |
5f1a76d0 | 2492 | dTHX; |
06da4f11 NIS |
2493 | if (!b->bufsiz) |
2494 | b->bufsiz = 4096; | |
5f1a76d0 | 2495 | b->buf = PerlMemShared_calloc(b->bufsiz,sizeof(STDCHAR)); |
06da4f11 NIS |
2496 | if (!b->buf) |
2497 | { | |
2498 | b->buf = (STDCHAR *)&b->oneword; | |
2499 | b->bufsiz = sizeof(b->oneword); | |
2500 | } | |
2501 | b->ptr = b->buf; | |
2502 | b->end = b->ptr; | |
2503 | } | |
9e353e3b NIS |
2504 | return b->buf; |
2505 | } | |
2506 | ||
2507 | Size_t | |
2508 | PerlIOBuf_bufsiz(PerlIO *f) | |
2509 | { | |
2510 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2511 | if (!b->buf) | |
06da4f11 | 2512 | PerlIO_get_base(f); |
9e353e3b NIS |
2513 | return (b->end - b->buf); |
2514 | } | |
2515 | ||
2516 | void | |
05d1247b | 2517 | PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
9e353e3b NIS |
2518 | { |
2519 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2520 | if (!b->buf) | |
06da4f11 | 2521 | PerlIO_get_base(f); |
9e353e3b NIS |
2522 | b->ptr = ptr; |
2523 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) | |
6f9d8c32 | 2524 | { |
9e353e3b NIS |
2525 | dTHX; |
2526 | assert(PerlIO_get_cnt(f) == cnt); | |
2527 | assert(b->ptr >= b->buf); | |
6f9d8c32 | 2528 | } |
9e353e3b | 2529 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
2530 | } |
2531 | ||
9e353e3b NIS |
2532 | PerlIO_funcs PerlIO_perlio = { |
2533 | "perlio", | |
2534 | sizeof(PerlIOBuf), | |
f5b9d040 | 2535 | PERLIO_K_BUFFERED, |
9e353e3b | 2536 | PerlIOBase_fileno, |
9e353e3b | 2537 | PerlIOBuf_open, |
5e2ab84b | 2538 | PerlIOBuf_pushed, |
06da4f11 | 2539 | PerlIOBase_noop_ok, |
9e353e3b NIS |
2540 | PerlIOBuf_read, |
2541 | PerlIOBuf_unread, | |
2542 | PerlIOBuf_write, | |
2543 | PerlIOBuf_seek, | |
2544 | PerlIOBuf_tell, | |
2545 | PerlIOBuf_close, | |
2546 | PerlIOBuf_flush, | |
06da4f11 | 2547 | PerlIOBuf_fill, |
9e353e3b NIS |
2548 | PerlIOBase_eof, |
2549 | PerlIOBase_error, | |
2550 | PerlIOBase_clearerr, | |
2551 | PerlIOBuf_setlinebuf, | |
2552 | PerlIOBuf_get_base, | |
2553 | PerlIOBuf_bufsiz, | |
2554 | PerlIOBuf_get_ptr, | |
2555 | PerlIOBuf_get_cnt, | |
2556 | PerlIOBuf_set_ptrcnt, | |
2557 | }; | |
2558 | ||
66ecd56b | 2559 | /*--------------------------------------------------------------------------------------*/ |
5e2ab84b NIS |
2560 | /* Temp layer to hold unread chars when cannot do it any other way */ |
2561 | ||
2562 | IV | |
2563 | PerlIOPending_fill(PerlIO *f) | |
2564 | { | |
2565 | /* Should never happen */ | |
2566 | PerlIO_flush(f); | |
2567 | return 0; | |
2568 | } | |
2569 | ||
2570 | IV | |
2571 | PerlIOPending_close(PerlIO *f) | |
2572 | { | |
2573 | /* A tad tricky - flush pops us, then we close new top */ | |
2574 | PerlIO_flush(f); | |
2575 | return PerlIO_close(f); | |
2576 | } | |
2577 | ||
2578 | IV | |
2579 | PerlIOPending_seek(PerlIO *f, Off_t offset, int whence) | |
2580 | { | |
2581 | /* A tad tricky - flush pops us, then we seek new top */ | |
2582 | PerlIO_flush(f); | |
2583 | return PerlIO_seek(f,offset,whence); | |
2584 | } | |
2585 | ||
2586 | ||
2587 | IV | |
2588 | PerlIOPending_flush(PerlIO *f) | |
2589 | { | |
a999f61b | 2590 | dTHX; |
5e2ab84b NIS |
2591 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2592 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) | |
2593 | { | |
5f1a76d0 | 2594 | PerlMemShared_free(b->buf); |
5e2ab84b NIS |
2595 | b->buf = NULL; |
2596 | } | |
a999f61b | 2597 | PerlIO_pop(aTHX_ f); |
5e2ab84b NIS |
2598 | return 0; |
2599 | } | |
2600 | ||
2601 | void | |
2602 | PerlIOPending_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) | |
2603 | { | |
2604 | if (cnt <= 0) | |
2605 | { | |
2606 | PerlIO_flush(f); | |
2607 | } | |
2608 | else | |
2609 | { | |
2610 | PerlIOBuf_set_ptrcnt(f,ptr,cnt); | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | IV | |
33af2bc7 | 2615 | PerlIOPending_pushed(PerlIO *f,const char *mode,const char *arg,STRLEN len) |
5e2ab84b | 2616 | { |
72e44f29 | 2617 | IV code = PerlIOBase_pushed(f,mode,arg,len); |
5e2ab84b NIS |
2618 | PerlIOl *l = PerlIOBase(f); |
2619 | /* Our PerlIO_fast_gets must match what we are pushed on, | |
2620 | or sv_gets() etc. get muddled when it changes mid-string | |
2621 | when we auto-pop. | |
2622 | */ | |
72e44f29 NIS |
2623 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS|PERLIO_F_UTF8)) | |
2624 | (PerlIOBase(PerlIONext(f))->flags & (PERLIO_F_FASTGETS|PERLIO_F_UTF8)); | |
5e2ab84b NIS |
2625 | return code; |
2626 | } | |
2627 | ||
2628 | SSize_t | |
2629 | PerlIOPending_read(PerlIO *f, void *vbuf, Size_t count) | |
2630 | { | |
2631 | SSize_t avail = PerlIO_get_cnt(f); | |
2632 | SSize_t got = 0; | |
2633 | if (count < avail) | |
2634 | avail = count; | |
2635 | if (avail > 0) | |
2636 | got = PerlIOBuf_read(f,vbuf,avail); | |
1f474064 NIS |
2637 | if (got >= 0 && got < count) |
2638 | { | |
2639 | SSize_t more = PerlIO_read(f,((STDCHAR *) vbuf)+got,count-got); | |
2640 | if (more >= 0 || got == 0) | |
2641 | got += more; | |
2642 | } | |
5e2ab84b NIS |
2643 | return got; |
2644 | } | |
2645 | ||
2646 | ||
2647 | PerlIO_funcs PerlIO_pending = { | |
2648 | "pending", | |
2649 | sizeof(PerlIOBuf), | |
2650 | PERLIO_K_BUFFERED, | |
2651 | PerlIOBase_fileno, | |
2652 | NULL, | |
5e2ab84b NIS |
2653 | PerlIOPending_pushed, |
2654 | PerlIOBase_noop_ok, | |
2655 | PerlIOPending_read, | |
2656 | PerlIOBuf_unread, | |
2657 | PerlIOBuf_write, | |
2658 | PerlIOPending_seek, | |
2659 | PerlIOBuf_tell, | |
2660 | PerlIOPending_close, | |
2661 | PerlIOPending_flush, | |
2662 | PerlIOPending_fill, | |
2663 | PerlIOBase_eof, | |
2664 | PerlIOBase_error, | |
2665 | PerlIOBase_clearerr, | |
2666 | PerlIOBuf_setlinebuf, | |
2667 | PerlIOBuf_get_base, | |
2668 | PerlIOBuf_bufsiz, | |
2669 | PerlIOBuf_get_ptr, | |
2670 | PerlIOBuf_get_cnt, | |
2671 | PerlIOPending_set_ptrcnt, | |
2672 | }; | |
2673 | ||
2674 | ||
2675 | ||
2676 | /*--------------------------------------------------------------------------------------*/ | |
99efab12 NIS |
2677 | /* crlf - translation |
2678 | On read translate CR,LF to "\n" we do this by overriding ptr/cnt entries | |
60382766 | 2679 | to hand back a line at a time and keeping a record of which nl we "lied" about. |
99efab12 | 2680 | On write translate "\n" to CR,LF |
66ecd56b NIS |
2681 | */ |
2682 | ||
99efab12 NIS |
2683 | typedef struct |
2684 | { | |
2685 | PerlIOBuf base; /* PerlIOBuf stuff */ | |
60382766 | 2686 | STDCHAR *nl; /* Position of crlf we "lied" about in the buffer */ |
99efab12 NIS |
2687 | } PerlIOCrlf; |
2688 | ||
f5b9d040 | 2689 | IV |
33af2bc7 | 2690 | PerlIOCrlf_pushed(PerlIO *f, const char *mode,const char *arg,STRLEN len) |
f5b9d040 NIS |
2691 | { |
2692 | IV code; | |
2693 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
33af2bc7 | 2694 | code = PerlIOBuf_pushed(f,mode,arg,len); |
5e2ab84b | 2695 | #if 0 |
4659c93f | 2696 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08"UVxf"\n", |
f5b9d040 | 2697 | f,PerlIOBase(f)->tab->name,(mode) ? mode : "(Null)", |
a4d3c1d3 | 2698 | PerlIOBase(f)->flags); |
5e2ab84b | 2699 | #endif |
f5b9d040 NIS |
2700 | return code; |
2701 | } | |
2702 | ||
2703 | ||
99efab12 NIS |
2704 | SSize_t |
2705 | PerlIOCrlf_unread(PerlIO *f, const void *vbuf, Size_t count) | |
2706 | { | |
60382766 | 2707 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
60382766 NIS |
2708 | if (c->nl) |
2709 | { | |
2710 | *(c->nl) = 0xd; | |
2711 | c->nl = NULL; | |
2712 | } | |
f5b9d040 NIS |
2713 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
2714 | return PerlIOBuf_unread(f,vbuf,count); | |
2715 | else | |
99efab12 | 2716 | { |
a4d3c1d3 | 2717 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
f5b9d040 NIS |
2718 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2719 | SSize_t unread = 0; | |
2720 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
2721 | PerlIO_flush(f); | |
2722 | if (!b->buf) | |
2723 | PerlIO_get_base(f); | |
2724 | if (b->buf) | |
99efab12 | 2725 | { |
f5b9d040 | 2726 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
99efab12 | 2727 | { |
f5b9d040 NIS |
2728 | b->end = b->ptr = b->buf + b->bufsiz; |
2729 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
5e2ab84b | 2730 | b->posn -= b->bufsiz; |
f5b9d040 NIS |
2731 | } |
2732 | while (count > 0 && b->ptr > b->buf) | |
2733 | { | |
2734 | int ch = *--buf; | |
2735 | if (ch == '\n') | |
99efab12 | 2736 | { |
f5b9d040 NIS |
2737 | if (b->ptr - 2 >= b->buf) |
2738 | { | |
2739 | *--(b->ptr) = 0xa; | |
2740 | *--(b->ptr) = 0xd; | |
2741 | unread++; | |
2742 | count--; | |
2743 | } | |
2744 | else | |
2745 | { | |
2746 | buf++; | |
2747 | break; | |
2748 | } | |
99efab12 NIS |
2749 | } |
2750 | else | |
2751 | { | |
f5b9d040 NIS |
2752 | *--(b->ptr) = ch; |
2753 | unread++; | |
2754 | count--; | |
99efab12 NIS |
2755 | } |
2756 | } | |
99efab12 | 2757 | } |
f5b9d040 | 2758 | return unread; |
99efab12 | 2759 | } |
99efab12 NIS |
2760 | } |
2761 | ||
2762 | SSize_t | |
2763 | PerlIOCrlf_get_cnt(PerlIO *f) | |
2764 | { | |
2765 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2766 | if (!b->buf) | |
2767 | PerlIO_get_base(f); | |
2768 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
2769 | { | |
2770 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); | |
f5b9d040 | 2771 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && !c->nl) |
99efab12 NIS |
2772 | { |
2773 | STDCHAR *nl = b->ptr; | |
60382766 | 2774 | scan: |
99efab12 NIS |
2775 | while (nl < b->end && *nl != 0xd) |
2776 | nl++; | |
2777 | if (nl < b->end && *nl == 0xd) | |
2778 | { | |
60382766 | 2779 | test: |
99efab12 NIS |
2780 | if (nl+1 < b->end) |
2781 | { | |
2782 | if (nl[1] == 0xa) | |
2783 | { | |
2784 | *nl = '\n'; | |
60382766 | 2785 | c->nl = nl; |
99efab12 | 2786 | } |
60382766 | 2787 | else |
99efab12 NIS |
2788 | { |
2789 | /* Not CR,LF but just CR */ | |
2790 | nl++; | |
60382766 | 2791 | goto scan; |
99efab12 NIS |
2792 | } |
2793 | } | |
2794 | else | |
2795 | { | |
60382766 | 2796 | /* Blast - found CR as last char in buffer */ |
99efab12 NIS |
2797 | if (b->ptr < nl) |
2798 | { | |
2799 | /* They may not care, defer work as long as possible */ | |
60382766 | 2800 | return (nl - b->ptr); |
99efab12 NIS |
2801 | } |
2802 | else | |
2803 | { | |
2804 | int code; | |
2805 | dTHX; | |
99efab12 NIS |
2806 | b->ptr++; /* say we have read it as far as flush() is concerned */ |
2807 | b->buf++; /* Leave space an front of buffer */ | |
2808 | b->bufsiz--; /* Buffer is thus smaller */ | |
2809 | code = PerlIO_fill(f); /* Fetch some more */ | |
2810 | b->bufsiz++; /* Restore size for next time */ | |
2811 | b->buf--; /* Point at space */ | |
2812 | b->ptr = nl = b->buf; /* Which is what we hand off */ | |
2813 | b->posn--; /* Buffer starts here */ | |
2814 | *nl = 0xd; /* Fill in the CR */ | |
60382766 | 2815 | if (code == 0) |
99efab12 NIS |
2816 | goto test; /* fill() call worked */ |
2817 | /* CR at EOF - just fall through */ | |
2818 | } | |
2819 | } | |
60382766 NIS |
2820 | } |
2821 | } | |
99efab12 NIS |
2822 | return (((c->nl) ? (c->nl+1) : b->end) - b->ptr); |
2823 | } | |
2824 | return 0; | |
2825 | } | |
2826 | ||
2827 | void | |
2828 | PerlIOCrlf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) | |
2829 | { | |
2830 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2831 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); | |
f5b9d040 | 2832 | IV flags = PerlIOBase(f)->flags; |
99efab12 NIS |
2833 | if (!b->buf) |
2834 | PerlIO_get_base(f); | |
2835 | if (!ptr) | |
60382766 | 2836 | { |
63dbdb06 NIS |
2837 | if (c->nl) |
2838 | ptr = c->nl+1; | |
2839 | else | |
2840 | { | |
2841 | ptr = b->end; | |
f5b9d040 | 2842 | if ((flags & PERLIO_F_CRLF) && ptr > b->buf && ptr[-1] == 0xd) |
63dbdb06 NIS |
2843 | ptr--; |
2844 | } | |
2845 | ptr -= cnt; | |
60382766 NIS |
2846 | } |
2847 | else | |
2848 | { | |
63dbdb06 NIS |
2849 | /* Test code - delete when it works ... */ |
2850 | STDCHAR *chk; | |
2851 | if (c->nl) | |
2852 | chk = c->nl+1; | |
2853 | else | |
2854 | { | |
2855 | chk = b->end; | |
f5b9d040 | 2856 | if ((flags & PERLIO_F_CRLF) && chk > b->buf && chk[-1] == 0xd) |
63dbdb06 NIS |
2857 | chk--; |
2858 | } | |
2859 | chk -= cnt; | |
a4d3c1d3 | 2860 | |
63dbdb06 NIS |
2861 | if (ptr != chk) |
2862 | { | |
2863 | dTHX; | |
4659c93f | 2864 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08"UVxf" nl=%p e=%p for %d", |
a4d3c1d3 | 2865 | ptr, chk, flags, c->nl, b->end, cnt); |
63dbdb06 | 2866 | } |
60382766 | 2867 | } |
99efab12 NIS |
2868 | if (c->nl) |
2869 | { | |
2870 | if (ptr > c->nl) | |
2871 | { | |
2872 | /* They have taken what we lied about */ | |
2873 | *(c->nl) = 0xd; | |
2874 | c->nl = NULL; | |
2875 | ptr++; | |
60382766 | 2876 | } |
99efab12 NIS |
2877 | } |
2878 | b->ptr = ptr; | |
2879 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
2880 | } | |
2881 | ||
2882 | SSize_t | |
2883 | PerlIOCrlf_write(PerlIO *f, const void *vbuf, Size_t count) | |
2884 | { | |
f5b9d040 NIS |
2885 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
2886 | return PerlIOBuf_write(f,vbuf,count); | |
2887 | else | |
99efab12 | 2888 | { |
a4d3c1d3 | 2889 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
f5b9d040 NIS |
2890 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
2891 | const STDCHAR *ebuf = buf+count; | |
2892 | if (!b->buf) | |
2893 | PerlIO_get_base(f); | |
2894 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
2895 | return 0; | |
2896 | while (buf < ebuf) | |
99efab12 | 2897 | { |
f5b9d040 NIS |
2898 | STDCHAR *eptr = b->buf+b->bufsiz; |
2899 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; | |
2900 | while (buf < ebuf && b->ptr < eptr) | |
99efab12 | 2901 | { |
f5b9d040 | 2902 | if (*buf == '\n') |
60382766 | 2903 | { |
f5b9d040 | 2904 | if ((b->ptr + 2) > eptr) |
60382766 | 2905 | { |
f5b9d040 | 2906 | /* Not room for both */ |
60382766 NIS |
2907 | PerlIO_flush(f); |
2908 | break; | |
2909 | } | |
f5b9d040 NIS |
2910 | else |
2911 | { | |
2912 | *(b->ptr)++ = 0xd; /* CR */ | |
2913 | *(b->ptr)++ = 0xa; /* LF */ | |
2914 | buf++; | |
2915 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) | |
2916 | { | |
2917 | PerlIO_flush(f); | |
2918 | break; | |
2919 | } | |
2920 | } | |
2921 | } | |
2922 | else | |
2923 | { | |
2924 | int ch = *buf++; | |
2925 | *(b->ptr)++ = ch; | |
2926 | } | |
2927 | if (b->ptr >= eptr) | |
2928 | { | |
2929 | PerlIO_flush(f); | |
2930 | break; | |
99efab12 | 2931 | } |
99efab12 NIS |
2932 | } |
2933 | } | |
f5b9d040 NIS |
2934 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) |
2935 | PerlIO_flush(f); | |
2936 | return (buf - (STDCHAR *) vbuf); | |
99efab12 | 2937 | } |
99efab12 NIS |
2938 | } |
2939 | ||
2940 | IV | |
2941 | PerlIOCrlf_flush(PerlIO *f) | |
2942 | { | |
2943 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); | |
2944 | if (c->nl) | |
2945 | { | |
99efab12 | 2946 | *(c->nl) = 0xd; |
60382766 | 2947 | c->nl = NULL; |
99efab12 NIS |
2948 | } |
2949 | return PerlIOBuf_flush(f); | |
2950 | } | |
2951 | ||
66ecd56b NIS |
2952 | PerlIO_funcs PerlIO_crlf = { |
2953 | "crlf", | |
99efab12 | 2954 | sizeof(PerlIOCrlf), |
f5b9d040 | 2955 | PERLIO_K_BUFFERED|PERLIO_K_CANCRLF, |
66ecd56b | 2956 | PerlIOBase_fileno, |
66ecd56b | 2957 | PerlIOBuf_open, |
f5b9d040 | 2958 | PerlIOCrlf_pushed, |
99efab12 NIS |
2959 | PerlIOBase_noop_ok, /* popped */ |
2960 | PerlIOBuf_read, /* generic read works with ptr/cnt lies ... */ | |
2961 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ | |
2962 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
66ecd56b NIS |
2963 | PerlIOBuf_seek, |
2964 | PerlIOBuf_tell, | |
2965 | PerlIOBuf_close, | |
99efab12 | 2966 | PerlIOCrlf_flush, |
66ecd56b NIS |
2967 | PerlIOBuf_fill, |
2968 | PerlIOBase_eof, | |
2969 | PerlIOBase_error, | |
2970 | PerlIOBase_clearerr, | |
2971 | PerlIOBuf_setlinebuf, | |
2972 | PerlIOBuf_get_base, | |
2973 | PerlIOBuf_bufsiz, | |
2974 | PerlIOBuf_get_ptr, | |
99efab12 NIS |
2975 | PerlIOCrlf_get_cnt, |
2976 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
2977 | }; |
2978 | ||
06da4f11 NIS |
2979 | #ifdef HAS_MMAP |
2980 | /*--------------------------------------------------------------------------------------*/ | |
2981 | /* mmap as "buffer" layer */ | |
2982 | ||
2983 | typedef struct | |
2984 | { | |
2985 | PerlIOBuf base; /* PerlIOBuf stuff */ | |
c3d7c7c9 | 2986 | Mmap_t mptr; /* Mapped address */ |
06da4f11 NIS |
2987 | Size_t len; /* mapped length */ |
2988 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
2989 | } PerlIOMmap; | |
2990 | ||
c3d7c7c9 NIS |
2991 | static size_t page_size = 0; |
2992 | ||
06da4f11 NIS |
2993 | IV |
2994 | PerlIOMmap_map(PerlIO *f) | |
2995 | { | |
68d873c6 | 2996 | dTHX; |
06da4f11 NIS |
2997 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2998 | PerlIOBuf *b = &m->base; | |
2999 | IV flags = PerlIOBase(f)->flags; | |
3000 | IV code = 0; | |
3001 | if (m->len) | |
3002 | abort(); | |
3003 | if (flags & PERLIO_F_CANREAD) | |
3004 | { | |
3005 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
3006 | int fd = PerlIO_fileno(f); | |
3007 | struct stat st; | |
3008 | code = fstat(fd,&st); | |
3009 | if (code == 0 && S_ISREG(st.st_mode)) | |
3010 | { | |
3011 | SSize_t len = st.st_size - b->posn; | |
3012 | if (len > 0) | |
3013 | { | |
c3d7c7c9 | 3014 | Off_t posn; |
68d873c6 JH |
3015 | if (!page_size) { |
3016 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE)) | |
3017 | { | |
3018 | SETERRNO(0,SS$_NORMAL); | |
3019 | # ifdef _SC_PAGESIZE | |
3020 | page_size = sysconf(_SC_PAGESIZE); | |
3021 | # else | |
3022 | page_size = sysconf(_SC_PAGE_SIZE); | |
14aaf8e8 | 3023 | # endif |
68d873c6 JH |
3024 | if ((long)page_size < 0) { |
3025 | if (errno) { | |
3026 | SV *error = ERRSV; | |
3027 | char *msg; | |
3028 | STRLEN n_a; | |
3029 | (void)SvUPGRADE(error, SVt_PV); | |
3030 | msg = SvPVx(error, n_a); | |
14aaf8e8 | 3031 | Perl_croak(aTHX_ "panic: sysconf: %s", msg); |
68d873c6 JH |
3032 | } |
3033 | else | |
14aaf8e8 | 3034 | Perl_croak(aTHX_ "panic: sysconf: pagesize unknown"); |
68d873c6 JH |
3035 | } |
3036 | } | |
3037 | #else | |
3038 | # ifdef HAS_GETPAGESIZE | |
c3d7c7c9 | 3039 | page_size = getpagesize(); |
68d873c6 JH |
3040 | # else |
3041 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) | |
3042 | page_size = PAGESIZE; /* compiletime, bad */ | |
3043 | # endif | |
3044 | # endif | |
3045 | #endif | |
3046 | if ((IV)page_size <= 0) | |
14aaf8e8 | 3047 | Perl_croak(aTHX_ "panic: bad pagesize %"IVdf, (IV)page_size); |
68d873c6 | 3048 | } |
c3d7c7c9 NIS |
3049 | if (b->posn < 0) |
3050 | { | |
3051 | /* This is a hack - should never happen - open should have set it ! */ | |
3052 | b->posn = PerlIO_tell(PerlIONext(f)); | |
3053 | } | |
3054 | posn = (b->posn / page_size) * page_size; | |
3055 | len = st.st_size - posn; | |
a5262162 | 3056 | m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
c3d7c7c9 | 3057 | if (m->mptr && m->mptr != (Mmap_t) -1) |
06da4f11 | 3058 | { |
a5262162 | 3059 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
c3d7c7c9 | 3060 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 3061 | #endif |
a5262162 NIS |
3062 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
3063 | madvise(m->mptr, len, MADV_WILLNEED); | |
3064 | #endif | |
c3d7c7c9 NIS |
3065 | PerlIOBase(f)->flags = (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; |
3066 | b->end = ((STDCHAR *)m->mptr) + len; | |
3067 | b->buf = ((STDCHAR *)m->mptr) + (b->posn - posn); | |
3068 | b->ptr = b->buf; | |
3069 | m->len = len; | |
06da4f11 NIS |
3070 | } |
3071 | else | |
3072 | { | |
3073 | b->buf = NULL; | |
3074 | } | |
3075 | } | |
3076 | else | |
3077 | { | |
3078 | PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
3079 | b->buf = NULL; | |
3080 | b->ptr = b->end = b->ptr; | |
3081 | code = -1; | |
3082 | } | |
3083 | } | |
3084 | } | |
3085 | return code; | |
3086 | } | |
3087 | ||
3088 | IV | |
3089 | PerlIOMmap_unmap(PerlIO *f) | |
3090 | { | |
3091 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3092 | PerlIOBuf *b = &m->base; | |
3093 | IV code = 0; | |
3094 | if (m->len) | |
3095 | { | |
3096 | if (b->buf) | |
3097 | { | |
c3d7c7c9 NIS |
3098 | code = munmap(m->mptr, m->len); |
3099 | b->buf = NULL; | |
3100 | m->len = 0; | |
3101 | m->mptr = NULL; | |
06da4f11 NIS |
3102 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0) |
3103 | code = -1; | |
06da4f11 NIS |
3104 | } |
3105 | b->ptr = b->end = b->buf; | |
3106 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); | |
3107 | } | |
3108 | return code; | |
3109 | } | |
3110 | ||
3111 | STDCHAR * | |
3112 | PerlIOMmap_get_base(PerlIO *f) | |
3113 | { | |
3114 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3115 | PerlIOBuf *b = &m->base; | |
3116 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) | |
3117 | { | |
3118 | /* Already have a readbuffer in progress */ | |
3119 | return b->buf; | |
3120 | } | |
3121 | if (b->buf) | |
3122 | { | |
3123 | /* We have a write buffer or flushed PerlIOBuf read buffer */ | |
3124 | m->bbuf = b->buf; /* save it in case we need it again */ | |
3125 | b->buf = NULL; /* Clear to trigger below */ | |
3126 | } | |
3127 | if (!b->buf) | |
3128 | { | |
3129 | PerlIOMmap_map(f); /* Try and map it */ | |
3130 | if (!b->buf) | |
3131 | { | |
3132 | /* Map did not work - recover PerlIOBuf buffer if we have one */ | |
3133 | b->buf = m->bbuf; | |
3134 | } | |
3135 | } | |
3136 | b->ptr = b->end = b->buf; | |
3137 | if (b->buf) | |
3138 | return b->buf; | |
3139 | return PerlIOBuf_get_base(f); | |
3140 | } | |
3141 | ||
3142 | SSize_t | |
3143 | PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count) | |
3144 | { | |
3145 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3146 | PerlIOBuf *b = &m->base; | |
3147 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3148 | PerlIO_flush(f); | |
3149 | if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count)) | |
3150 | { | |
3151 | b->ptr -= count; | |
3152 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; | |
3153 | return count; | |
3154 | } | |
3155 | if (m->len) | |
3156 | { | |
4a4a6116 | 3157 | /* Loose the unwritable mapped buffer */ |
06da4f11 | 3158 | PerlIO_flush(f); |
c3d7c7c9 NIS |
3159 | /* If flush took the "buffer" see if we have one from before */ |
3160 | if (!b->buf && m->bbuf) | |
3161 | b->buf = m->bbuf; | |
3162 | if (!b->buf) | |
3163 | { | |
3164 | PerlIOBuf_get_base(f); | |
3165 | m->bbuf = b->buf; | |
3166 | } | |
06da4f11 | 3167 | } |
5e2ab84b | 3168 | return PerlIOBuf_unread(f,vbuf,count); |
06da4f11 NIS |
3169 | } |
3170 | ||
3171 | SSize_t | |
3172 | PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count) | |
3173 | { | |
3174 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3175 | PerlIOBuf *b = &m->base; | |
3176 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) | |
3177 | { | |
3178 | /* No, or wrong sort of, buffer */ | |
3179 | if (m->len) | |
3180 | { | |
3181 | if (PerlIOMmap_unmap(f) != 0) | |
3182 | return 0; | |
3183 | } | |
3184 | /* If unmap took the "buffer" see if we have one from before */ | |
3185 | if (!b->buf && m->bbuf) | |
3186 | b->buf = m->bbuf; | |
3187 | if (!b->buf) | |
3188 | { | |
3189 | PerlIOBuf_get_base(f); | |
3190 | m->bbuf = b->buf; | |
3191 | } | |
3192 | } | |
3193 | return PerlIOBuf_write(f,vbuf,count); | |
3194 | } | |
3195 | ||
3196 | IV | |
3197 | PerlIOMmap_flush(PerlIO *f) | |
3198 | { | |
3199 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3200 | PerlIOBuf *b = &m->base; | |
3201 | IV code = PerlIOBuf_flush(f); | |
3202 | /* Now we are "synced" at PerlIOBuf level */ | |
3203 | if (b->buf) | |
3204 | { | |
3205 | if (m->len) | |
3206 | { | |
3207 | /* Unmap the buffer */ | |
3208 | if (PerlIOMmap_unmap(f) != 0) | |
3209 | code = -1; | |
3210 | } | |
3211 | else | |
3212 | { | |
3213 | /* We seem to have a PerlIOBuf buffer which was not mapped | |
3214 | * remember it in case we need one later | |
3215 | */ | |
3216 | m->bbuf = b->buf; | |
3217 | } | |
3218 | } | |
06da4f11 NIS |
3219 | return code; |
3220 | } | |
3221 | ||
3222 | IV | |
3223 | PerlIOMmap_fill(PerlIO *f) | |
3224 | { | |
3225 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
3226 | IV code = PerlIO_flush(f); | |
06da4f11 NIS |
3227 | if (code == 0 && !b->buf) |
3228 | { | |
3229 | code = PerlIOMmap_map(f); | |
06da4f11 NIS |
3230 | } |
3231 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) | |
3232 | { | |
3233 | code = PerlIOBuf_fill(f); | |
06da4f11 NIS |
3234 | } |
3235 | return code; | |
3236 | } | |
3237 | ||
3238 | IV | |
3239 | PerlIOMmap_close(PerlIO *f) | |
3240 | { | |
3241 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3242 | PerlIOBuf *b = &m->base; | |
3243 | IV code = PerlIO_flush(f); | |
3244 | if (m->bbuf) | |
3245 | { | |
3246 | b->buf = m->bbuf; | |
3247 | m->bbuf = NULL; | |
3248 | b->ptr = b->end = b->buf; | |
3249 | } | |
3250 | if (PerlIOBuf_close(f) != 0) | |
3251 | code = -1; | |
06da4f11 NIS |
3252 | return code; |
3253 | } | |
3254 | ||
3255 | ||
3256 | PerlIO_funcs PerlIO_mmap = { | |
3257 | "mmap", | |
3258 | sizeof(PerlIOMmap), | |
f5b9d040 | 3259 | PERLIO_K_BUFFERED, |
06da4f11 | 3260 | PerlIOBase_fileno, |
06da4f11 | 3261 | PerlIOBuf_open, |
5e2ab84b | 3262 | PerlIOBuf_pushed, |
06da4f11 NIS |
3263 | PerlIOBase_noop_ok, |
3264 | PerlIOBuf_read, | |
3265 | PerlIOMmap_unread, | |
3266 | PerlIOMmap_write, | |
3267 | PerlIOBuf_seek, | |
3268 | PerlIOBuf_tell, | |
3269 | PerlIOBuf_close, | |
3270 | PerlIOMmap_flush, | |
3271 | PerlIOMmap_fill, | |
3272 | PerlIOBase_eof, | |
3273 | PerlIOBase_error, | |
3274 | PerlIOBase_clearerr, | |
3275 | PerlIOBuf_setlinebuf, | |
3276 | PerlIOMmap_get_base, | |
3277 | PerlIOBuf_bufsiz, | |
3278 | PerlIOBuf_get_ptr, | |
3279 | PerlIOBuf_get_cnt, | |
3280 | PerlIOBuf_set_ptrcnt, | |
3281 | }; | |
3282 | ||
3283 | #endif /* HAS_MMAP */ | |
3284 | ||
9e353e3b NIS |
3285 | void |
3286 | PerlIO_init(void) | |
760ac839 | 3287 | { |
9e353e3b | 3288 | if (!_perlio) |
6f9d8c32 | 3289 | { |
be696b0a | 3290 | #ifndef WIN32 |
9e353e3b | 3291 | atexit(&PerlIO_cleanup); |
be696b0a | 3292 | #endif |
6f9d8c32 | 3293 | } |
760ac839 LW |
3294 | } |
3295 | ||
dfebf958 NIS |
3296 | |
3297 | ||
9e353e3b NIS |
3298 | #undef PerlIO_stdin |
3299 | PerlIO * | |
3300 | PerlIO_stdin(void) | |
3301 | { | |
3302 | if (!_perlio) | |
f3862f8b | 3303 | PerlIO_stdstreams(); |
05d1247b | 3304 | return &_perlio[1]; |
9e353e3b NIS |
3305 | } |
3306 | ||
3307 | #undef PerlIO_stdout | |
3308 | PerlIO * | |
3309 | PerlIO_stdout(void) | |
3310 | { | |
3311 | if (!_perlio) | |
f3862f8b | 3312 | PerlIO_stdstreams(); |
05d1247b | 3313 | return &_perlio[2]; |
9e353e3b NIS |
3314 | } |
3315 | ||
3316 | #undef PerlIO_stderr | |
3317 | PerlIO * | |
3318 | PerlIO_stderr(void) | |
3319 | { | |
3320 | if (!_perlio) | |
f3862f8b | 3321 | PerlIO_stdstreams(); |
05d1247b | 3322 | return &_perlio[3]; |
9e353e3b NIS |
3323 | } |
3324 | ||
3325 | /*--------------------------------------------------------------------------------------*/ | |
3326 | ||
3327 | #undef PerlIO_getname | |
3328 | char * | |
3329 | PerlIO_getname(PerlIO *f, char *buf) | |
3330 | { | |
3331 | dTHX; | |
3332 | Perl_croak(aTHX_ "Don't know how to get file name"); | |
3333 | return NULL; | |
3334 | } | |
3335 | ||
3336 | ||
3337 | /*--------------------------------------------------------------------------------------*/ | |
3338 | /* Functions which can be called on any kind of PerlIO implemented | |
3339 | in terms of above | |
3340 | */ | |
3341 | ||
3342 | #undef PerlIO_getc | |
6f9d8c32 | 3343 | int |
9e353e3b | 3344 | PerlIO_getc(PerlIO *f) |
760ac839 | 3345 | { |
313ca112 NIS |
3346 | STDCHAR buf[1]; |
3347 | SSize_t count = PerlIO_read(f,buf,1); | |
9e353e3b | 3348 | if (count == 1) |
313ca112 NIS |
3349 | { |
3350 | return (unsigned char) buf[0]; | |
3351 | } | |
3352 | return EOF; | |
3353 | } | |
3354 | ||
3355 | #undef PerlIO_ungetc | |
3356 | int | |
3357 | PerlIO_ungetc(PerlIO *f, int ch) | |
3358 | { | |
3359 | if (ch != EOF) | |
3360 | { | |
3361 | STDCHAR buf = ch; | |
3362 | if (PerlIO_unread(f,&buf,1) == 1) | |
3363 | return ch; | |
3364 | } | |
3365 | return EOF; | |
760ac839 LW |
3366 | } |
3367 | ||
9e353e3b NIS |
3368 | #undef PerlIO_putc |
3369 | int | |
3370 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 3371 | { |
9e353e3b NIS |
3372 | STDCHAR buf = ch; |
3373 | return PerlIO_write(f,&buf,1); | |
760ac839 LW |
3374 | } |
3375 | ||
9e353e3b | 3376 | #undef PerlIO_puts |
760ac839 | 3377 | int |
9e353e3b | 3378 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 3379 | { |
9e353e3b NIS |
3380 | STRLEN len = strlen(s); |
3381 | return PerlIO_write(f,s,len); | |
760ac839 LW |
3382 | } |
3383 | ||
3384 | #undef PerlIO_rewind | |
3385 | void | |
c78749f2 | 3386 | PerlIO_rewind(PerlIO *f) |
760ac839 | 3387 | { |
6f9d8c32 | 3388 | PerlIO_seek(f,(Off_t)0,SEEK_SET); |
9e353e3b | 3389 | PerlIO_clearerr(f); |
6f9d8c32 NIS |
3390 | } |
3391 | ||
3392 | #undef PerlIO_vprintf | |
3393 | int | |
3394 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
3395 | { | |
3396 | dTHX; | |
bb9950b7 | 3397 | SV *sv = newSVpvn("",0); |
6f9d8c32 NIS |
3398 | char *s; |
3399 | STRLEN len; | |
933fb4e4 | 3400 | SSize_t wrote; |
2cc61e15 DD |
3401 | #ifdef NEED_VA_COPY |
3402 | va_list apc; | |
3403 | Perl_va_copy(ap, apc); | |
3404 | sv_vcatpvf(sv, fmt, &apc); | |
3405 | #else | |
6f9d8c32 | 3406 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 | 3407 | #endif |
6f9d8c32 | 3408 | s = SvPV(sv,len); |
933fb4e4 BS |
3409 | wrote = PerlIO_write(f,s,len); |
3410 | SvREFCNT_dec(sv); | |
3411 | return wrote; | |
760ac839 LW |
3412 | } |
3413 | ||
3414 | #undef PerlIO_printf | |
6f9d8c32 | 3415 | int |
760ac839 | 3416 | PerlIO_printf(PerlIO *f,const char *fmt,...) |
760ac839 LW |
3417 | { |
3418 | va_list ap; | |
3419 | int result; | |
760ac839 | 3420 | va_start(ap,fmt); |
6f9d8c32 | 3421 | result = PerlIO_vprintf(f,fmt,ap); |
760ac839 LW |
3422 | va_end(ap); |
3423 | return result; | |
3424 | } | |
3425 | ||
3426 | #undef PerlIO_stdoutf | |
6f9d8c32 | 3427 | int |
760ac839 | 3428 | PerlIO_stdoutf(const char *fmt,...) |
760ac839 LW |
3429 | { |
3430 | va_list ap; | |
3431 | int result; | |
760ac839 | 3432 | va_start(ap,fmt); |
760ac839 LW |
3433 | result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); |
3434 | va_end(ap); | |
3435 | return result; | |
3436 | } | |
3437 | ||
3438 | #undef PerlIO_tmpfile | |
3439 | PerlIO * | |
c78749f2 | 3440 | PerlIO_tmpfile(void) |
760ac839 | 3441 | { |
b1ef6e3b | 3442 | /* I have no idea how portable mkstemp() is ... */ |
83b075c3 | 3443 | #if defined(WIN32) || !defined(HAVE_MKSTEMP) |
adb71456 | 3444 | dTHX; |
83b075c3 | 3445 | PerlIO *f = NULL; |
eaf8b698 | 3446 | FILE *stdio = PerlSIO_tmpfile(); |
83b075c3 NIS |
3447 | if (stdio) |
3448 | { | |
a999f61b | 3449 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),&PerlIO_stdio,"w+",Nullch,0),PerlIOStdio); |
83b075c3 NIS |
3450 | s->stdio = stdio; |
3451 | } | |
3452 | return f; | |
3453 | #else | |
3454 | dTHX; | |
6f9d8c32 NIS |
3455 | SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0); |
3456 | int fd = mkstemp(SvPVX(sv)); | |
3457 | PerlIO *f = NULL; | |
3458 | if (fd >= 0) | |
3459 | { | |
b1ef6e3b | 3460 | f = PerlIO_fdopen(fd,"w+"); |
6f9d8c32 NIS |
3461 | if (f) |
3462 | { | |
9e353e3b | 3463 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; |
6f9d8c32 | 3464 | } |
00b02797 | 3465 | PerlLIO_unlink(SvPVX(sv)); |
6f9d8c32 NIS |
3466 | SvREFCNT_dec(sv); |
3467 | } | |
3468 | return f; | |
83b075c3 | 3469 | #endif |
760ac839 LW |
3470 | } |
3471 | ||
6f9d8c32 NIS |
3472 | #undef HAS_FSETPOS |
3473 | #undef HAS_FGETPOS | |
3474 | ||
760ac839 LW |
3475 | #endif /* USE_SFIO */ |
3476 | #endif /* PERLIO_IS_STDIO */ | |
3477 | ||
9e353e3b NIS |
3478 | /*======================================================================================*/ |
3479 | /* Now some functions in terms of above which may be needed even if | |
3480 | we are not in true PerlIO mode | |
3481 | */ | |
3482 | ||
760ac839 LW |
3483 | #ifndef HAS_FSETPOS |
3484 | #undef PerlIO_setpos | |
3485 | int | |
766a733e | 3486 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 3487 | { |
766a733e NIS |
3488 | dTHX; |
3489 | if (SvOK(pos)) | |
3490 | { | |
3491 | STRLEN len; | |
3492 | Off_t *posn = (Off_t *) SvPV(pos,len); | |
3493 | if (f && len == sizeof(Off_t)) | |
3494 | return PerlIO_seek(f,*posn,SEEK_SET); | |
3495 | } | |
3496 | errno = EINVAL; | |
3497 | return -1; | |
760ac839 | 3498 | } |
c411622e | 3499 | #else |
c411622e | 3500 | #undef PerlIO_setpos |
3501 | int | |
766a733e | 3502 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 3503 | { |
766a733e NIS |
3504 | dTHX; |
3505 | if (SvOK(pos)) | |
3506 | { | |
3507 | STRLEN len; | |
3508 | Fpos_t *fpos = (Fpos_t *) SvPV(pos,len); | |
3509 | if (f && len == sizeof(Fpos_t)) | |
3510 | { | |
2d4389e4 | 3511 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
766a733e | 3512 | return fsetpos64(f, fpos); |
d9b3e12d | 3513 | #else |
766a733e | 3514 | return fsetpos(f, fpos); |
d9b3e12d | 3515 | #endif |
766a733e NIS |
3516 | } |
3517 | } | |
3518 | errno = EINVAL; | |
3519 | return -1; | |
c411622e | 3520 | } |
3521 | #endif | |
760ac839 LW |
3522 | |
3523 | #ifndef HAS_FGETPOS | |
3524 | #undef PerlIO_getpos | |
3525 | int | |
766a733e | 3526 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 3527 | { |
766a733e NIS |
3528 | dTHX; |
3529 | Off_t posn = PerlIO_tell(f); | |
3530 | sv_setpvn(pos,(char *)&posn,sizeof(posn)); | |
3531 | return (posn == (Off_t)-1) ? -1 : 0; | |
760ac839 | 3532 | } |
c411622e | 3533 | #else |
c411622e | 3534 | #undef PerlIO_getpos |
3535 | int | |
766a733e | 3536 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 3537 | { |
766a733e NIS |
3538 | dTHX; |
3539 | Fpos_t fpos; | |
3540 | int code; | |
2d4389e4 | 3541 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
766a733e | 3542 | code = fgetpos64(f, &fpos); |
d9b3e12d | 3543 | #else |
766a733e | 3544 | code = fgetpos(f, &fpos); |
d9b3e12d | 3545 | #endif |
766a733e NIS |
3546 | sv_setpvn(pos,(char *)&fpos,sizeof(fpos)); |
3547 | return code; | |
c411622e | 3548 | } |
3549 | #endif | |
760ac839 LW |
3550 | |
3551 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
3552 | ||
3553 | int | |
c78749f2 | 3554 | vprintf(char *pat, char *args) |
662a7e3f CS |
3555 | { |
3556 | _doprnt(pat, args, stdout); | |
3557 | return 0; /* wrong, but perl doesn't use the return value */ | |
3558 | } | |
3559 | ||
3560 | int | |
c78749f2 | 3561 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
3562 | { |
3563 | _doprnt(pat, args, fd); | |
3564 | return 0; /* wrong, but perl doesn't use the return value */ | |
3565 | } | |
3566 | ||
3567 | #endif | |
3568 | ||
3569 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 3570 | int |
8ac85365 | 3571 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 LW |
3572 | { |
3573 | int val = vsprintf(s, fmt, ap); | |
3574 | if (n >= 0) | |
3575 | { | |
8c86a920 | 3576 | if (strlen(s) >= (STRLEN)n) |
760ac839 | 3577 | { |
bf49b057 | 3578 | dTHX; |
fb4a9925 JH |
3579 | (void)PerlIO_puts(Perl_error_log, |
3580 | "panic: sprintf overflow - memory corrupted!\n"); | |
bf49b057 | 3581 | my_exit(1); |
760ac839 LW |
3582 | } |
3583 | } | |
3584 | return val; | |
3585 | } | |
3586 | #endif | |
3587 | ||
3588 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 3589 | int |
760ac839 | 3590 | PerlIO_sprintf(char *s, int n, const char *fmt,...) |
760ac839 LW |
3591 | { |
3592 | va_list ap; | |
3593 | int result; | |
760ac839 | 3594 | va_start(ap,fmt); |
760ac839 LW |
3595 | result = PerlIO_vsprintf(s, n, fmt, ap); |
3596 | va_end(ap); | |
3597 | return result; | |
3598 | } | |
3599 | #endif | |
3600 | ||
c5be433b | 3601 |