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); | |
1141d9f8 NIS |
353 | if (!svp && PL_subname && PerlIO_layer_av && av_len(PerlIO_layer_av)+1 >= 2) |
354 | { | |
355 | SV *pkgsv = newSVpvn("PerlIO",6); | |
356 | SV *layer = newSVpvn(name,len); | |
357 | ENTER; | |
358 | /* The two SVs are magically freed by load_module */ | |
359 | Perl_load_module(aTHX_ 0, pkgsv, Nullsv, layer, Nullsv); | |
360 | LEAVE; | |
361 | /* Say this is lvalue so we get an 'undef' if still not there */ | |
362 | svp = hv_fetch(PerlIO_layer_hv,name,len,1); | |
363 | } | |
364 | if (svp && (sv = *svp)) | |
365 | { | |
366 | if (SvROK(sv)) | |
367 | return *svp; | |
368 | } | |
f3862f8b NIS |
369 | return NULL; |
370 | } | |
371 | ||
b13b2135 NIS |
372 | |
373 | static int | |
374 | perlio_mg_set(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_ "set %"SVf" %p %p %p",sv,io,ifp,ofp); |
b13b2135 NIS |
383 | } |
384 | return 0; | |
385 | } | |
386 | ||
387 | static int | |
388 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
389 | { | |
390 | if (SvROK(sv)) | |
391 | { | |
b931b1d9 | 392 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 NIS |
393 | PerlIO *ifp = IoIFP(io); |
394 | PerlIO *ofp = IoOFP(io); | |
395 | AV *av = (AV *) mg->mg_obj; | |
4659c93f | 396 | Perl_warn(aTHX_ "get %"SVf" %p %p %p",sv,io,ifp,ofp); |
b13b2135 NIS |
397 | } |
398 | return 0; | |
399 | } | |
400 | ||
401 | static int | |
402 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
403 | { | |
4659c93f | 404 | Perl_warn(aTHX_ "clear %"SVf,sv); |
b13b2135 NIS |
405 | return 0; |
406 | } | |
407 | ||
408 | static int | |
409 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
410 | { | |
4659c93f | 411 | Perl_warn(aTHX_ "free %"SVf,sv); |
b13b2135 NIS |
412 | return 0; |
413 | } | |
414 | ||
415 | MGVTBL perlio_vtab = { | |
416 | perlio_mg_get, | |
417 | perlio_mg_set, | |
418 | NULL, /* len */ | |
419 | NULL, | |
420 | perlio_mg_free | |
421 | }; | |
422 | ||
423 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
424 | { | |
425 | dXSARGS; | |
426 | SV *sv = SvRV(ST(1)); | |
427 | AV *av = newAV(); | |
428 | MAGIC *mg; | |
429 | int count = 0; | |
430 | int i; | |
431 | sv_magic(sv, (SV *)av, '~', NULL, 0); | |
432 | SvRMAGICAL_off(sv); | |
433 | mg = mg_find(sv,'~'); | |
434 | mg->mg_virtual = &perlio_vtab; | |
435 | mg_magical(sv); | |
4659c93f | 436 | Perl_warn(aTHX_ "attrib %"SVf,sv); |
b13b2135 NIS |
437 | for (i=2; i < items; i++) |
438 | { | |
439 | STRLEN len; | |
ac27b0f5 | 440 | const char *name = SvPV(ST(i),len); |
a999f61b | 441 | SV *layer = PerlIO_find_layer(aTHX_ name,len); |
b13b2135 NIS |
442 | if (layer) |
443 | { | |
444 | av_push(av,SvREFCNT_inc(layer)); | |
445 | } | |
446 | else | |
447 | { | |
448 | ST(count) = ST(i); | |
449 | count++; | |
450 | } | |
451 | } | |
452 | SvREFCNT_dec(av); | |
453 | XSRETURN(count); | |
454 | } | |
455 | ||
f3862f8b | 456 | void |
a999f61b | 457 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) |
f3862f8b | 458 | { |
b931b1d9 | 459 | HV *stash = gv_stashpv("perlio::Layer", TRUE); |
e7778b43 | 460 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash); |
26fb694e NIS |
461 | if (!PerlIO_layer_hv) |
462 | { | |
463 | PerlIO_layer_hv = get_hv("open::layers",GV_ADD|GV_ADDMULTI); | |
464 | } | |
f3862f8b | 465 | hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),sv,0); |
dfebf958 | 466 | PerlIO_debug("define %s %p\n",tab->name,tab); |
f3862f8b NIS |
467 | } |
468 | ||
1141d9f8 NIS |
469 | int |
470 | PerlIO_parse_layers(pTHX_ AV *av, const char *names) | |
471 | { | |
472 | if (names) | |
473 | { | |
474 | const char *s = names; | |
475 | while (*s) | |
476 | { | |
477 | while (isSPACE(*s) || *s == ':') | |
478 | s++; | |
479 | if (*s) | |
480 | { | |
481 | STRLEN llen = 0; | |
482 | const char *e = s; | |
483 | const char *as = Nullch; | |
484 | STRLEN alen = 0; | |
485 | if (!isIDFIRST(*s)) | |
486 | { | |
487 | /* Message is consistent with how attribute lists are passed. | |
488 | Even though this means "foo : : bar" is seen as an invalid separator | |
489 | character. */ | |
490 | char q = ((*s == '\'') ? '"' : '\''); | |
491 | Perl_warn(aTHX_ "perlio: invalid separator character %c%c%c in layer specification list", q, *s, q); | |
492 | return -1; | |
493 | } | |
494 | do | |
495 | { | |
496 | e++; | |
497 | } while (isALNUM(*e)); | |
498 | llen = e-s; | |
499 | if (*e == '(') | |
500 | { | |
501 | int nesting = 1; | |
502 | as = ++e; | |
503 | while (nesting) | |
504 | { | |
505 | switch (*e++) | |
506 | { | |
507 | case ')': | |
508 | if (--nesting == 0) | |
509 | alen = (e-1)-as; | |
510 | break; | |
511 | case '(': | |
512 | ++nesting; | |
513 | break; | |
514 | case '\\': | |
515 | /* It's a nul terminated string, not allowed to \ the terminating null. | |
516 | Anything other character is passed over. */ | |
517 | if (*e++) | |
518 | { | |
519 | break; | |
520 | } | |
521 | /* Drop through */ | |
522 | case '\0': | |
523 | e--; | |
524 | Perl_warn(aTHX_ "perlio: argument list not closed for layer \"%.*s\"",(int)(e - s),s); | |
525 | return -1; | |
526 | default: | |
527 | /* boring. */ | |
528 | break; | |
529 | } | |
530 | } | |
531 | } | |
532 | if (e > s) | |
533 | { | |
534 | SV *layer = PerlIO_find_layer(aTHX_ s,llen); | |
535 | if (layer) | |
536 | { | |
537 | av_push(av,SvREFCNT_inc(layer)); | |
538 | av_push(av,(as) ? newSVpvn(as,alen) : &PL_sv_undef); | |
539 | } | |
540 | else { | |
541 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(int)llen,s); | |
542 | return -1; | |
543 | } | |
544 | } | |
545 | s = e; | |
546 | } | |
547 | } | |
548 | } | |
549 | return 0; | |
550 | } | |
551 | ||
dfebf958 | 552 | void |
1141d9f8 | 553 | PerlIO_default_buffer(pTHX_ AV *av) |
dfebf958 NIS |
554 | { |
555 | PerlIO_funcs *tab = &PerlIO_perlio; | |
556 | if (O_BINARY != O_TEXT) | |
557 | { | |
558 | tab = &PerlIO_crlf; | |
559 | } | |
560 | else | |
561 | { | |
562 | if (PerlIO_stdio.Set_ptrcnt) | |
563 | { | |
564 | tab = &PerlIO_stdio; | |
565 | } | |
566 | } | |
567 | PerlIO_debug("Pushing %s\n",tab->name); | |
1141d9f8 NIS |
568 | av_push(av,SvREFCNT_inc(PerlIO_find_layer(aTHX_ tab->name,0))); |
569 | av_push(av,&PL_sv_undef); | |
dfebf958 NIS |
570 | } |
571 | ||
f3862f8b | 572 | PerlIO_funcs * |
a999f61b | 573 | PerlIO_default_layer(pTHX_ I32 n) |
f3862f8b | 574 | { |
f3862f8b NIS |
575 | SV **svp; |
576 | SV *layer; | |
577 | PerlIO_funcs *tab = &PerlIO_stdio; | |
578 | int len; | |
26fb694e | 579 | if (!PerlIO_layer_av) |
f3862f8b | 580 | { |
1141d9f8 | 581 | const char *s = (PL_tainting) ? Nullch : PerlEnv_getenv("PERLIO"); |
26fb694e | 582 | PerlIO_layer_av = get_av("open::layers",GV_ADD|GV_ADDMULTI); |
b931b1d9 NIS |
583 | newXS("perlio::import",XS_perlio_import,__FILE__); |
584 | newXS("perlio::unimport",XS_perlio_unimport,__FILE__); | |
585 | #if 0 | |
b13b2135 | 586 | newXS("io::MODIFY_SCALAR_ATTRIBUTES",XS_io_MODIFY_SCALAR_ATTRIBUTES,__FILE__); |
b931b1d9 | 587 | #endif |
a999f61b NIS |
588 | PerlIO_define_layer(aTHX_ &PerlIO_raw); |
589 | PerlIO_define_layer(aTHX_ &PerlIO_unix); | |
590 | PerlIO_define_layer(aTHX_ &PerlIO_perlio); | |
591 | PerlIO_define_layer(aTHX_ &PerlIO_stdio); | |
592 | PerlIO_define_layer(aTHX_ &PerlIO_crlf); | |
06da4f11 | 593 | #ifdef HAS_MMAP |
a999f61b | 594 | PerlIO_define_layer(aTHX_ &PerlIO_mmap); |
06da4f11 | 595 | #endif |
a999f61b NIS |
596 | PerlIO_define_layer(aTHX_ &PerlIO_utf8); |
597 | PerlIO_define_layer(aTHX_ &PerlIO_byte); | |
598 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(aTHX_ PerlIO_unix.name,0))); | |
1141d9f8 | 599 | av_push(PerlIO_layer_av,&PL_sv_undef); |
f3862f8b NIS |
600 | if (s) |
601 | { | |
1141d9f8 NIS |
602 | PerlIO_parse_layers(aTHX_ PerlIO_layer_av,s); |
603 | } | |
604 | else | |
605 | { | |
606 | PerlIO_default_buffer(aTHX_ PerlIO_layer_av); | |
f3862f8b NIS |
607 | } |
608 | } | |
1141d9f8 NIS |
609 | len = av_len(PerlIO_layer_av)+1; |
610 | if (len < 2) | |
f3862f8b | 611 | { |
1141d9f8 | 612 | PerlIO_default_buffer(aTHX_ PerlIO_layer_av); |
f3862f8b NIS |
613 | len = av_len(PerlIO_layer_av); |
614 | } | |
1141d9f8 | 615 | n *= 2; |
f3862f8b | 616 | if (n < 0) |
1141d9f8 NIS |
617 | n += len; |
618 | svp = av_fetch(PerlIO_layer_av,n,FALSE); | |
f3862f8b NIS |
619 | if (svp && (layer = *svp) && SvROK(layer) && SvIOK((layer = SvRV(layer)))) |
620 | { | |
e7778b43 | 621 | tab = INT2PTR(PerlIO_funcs *, SvIV(layer)); |
f3862f8b | 622 | } |
1141d9f8 | 623 | /* PerlIO_debug("Layer %d is %s\n",n/2,tab->name); */ |
f3862f8b NIS |
624 | return tab; |
625 | } | |
626 | ||
a999f61b NIS |
627 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
628 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
629 | |
630 | void | |
1141d9f8 | 631 | PerlIO_stdstreams(pTHX) |
60382766 NIS |
632 | { |
633 | if (!_perlio) | |
634 | { | |
5f1a76d0 | 635 | PerlIO_allocate(aTHX); |
f5b9d040 NIS |
636 | PerlIO_fdopen(0,"Ir" PERLIO_STDTEXT); |
637 | PerlIO_fdopen(1,"Iw" PERLIO_STDTEXT); | |
638 | PerlIO_fdopen(2,"Iw" PERLIO_STDTEXT); | |
60382766 NIS |
639 | } |
640 | } | |
641 | ||
642 | PerlIO * | |
a999f61b | 643 | PerlIO_push(pTHX_ PerlIO *f,PerlIO_funcs *tab,const char *mode,const char *arg,STRLEN len) |
60382766 NIS |
644 | { |
645 | PerlIOl *l = NULL; | |
5f1a76d0 | 646 | l = PerlMemShared_calloc(tab->size,sizeof(char)); |
60382766 NIS |
647 | if (l) |
648 | { | |
649 | Zero(l,tab->size,char); | |
650 | l->next = *f; | |
651 | l->tab = tab; | |
652 | *f = l; | |
64977eb6 NC |
653 | PerlIO_debug("PerlIO_push f=%p %s %s '%.*s'\n", |
654 | f,tab->name,(mode) ? mode : "(Null)",(int) len,arg); | |
33af2bc7 | 655 | if ((*l->tab->Pushed)(f,mode,arg,len) != 0) |
60382766 | 656 | { |
a999f61b | 657 | PerlIO_pop(aTHX_ f); |
60382766 NIS |
658 | return NULL; |
659 | } | |
660 | } | |
661 | return f; | |
662 | } | |
663 | ||
dfebf958 | 664 | IV |
4b803d04 NIS |
665 | PerlIOPop_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) |
666 | { | |
a999f61b NIS |
667 | dTHX; |
668 | PerlIO_pop(aTHX_ f); | |
4b803d04 NIS |
669 | if (*f) |
670 | { | |
671 | PerlIO_flush(f); | |
a999f61b | 672 | PerlIO_pop(aTHX_ f); |
4b803d04 NIS |
673 | return 0; |
674 | } | |
675 | return -1; | |
676 | } | |
677 | ||
678 | IV | |
dfebf958 NIS |
679 | PerlIORaw_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) |
680 | { | |
4b803d04 | 681 | /* Remove the dummy layer */ |
a999f61b NIS |
682 | dTHX; |
683 | PerlIO_pop(aTHX_ f); | |
dfebf958 | 684 | /* Pop back to bottom layer */ |
4b803d04 | 685 | if (f && *f) |
dfebf958 | 686 | { |
4b803d04 NIS |
687 | int code = 0; |
688 | PerlIO_flush(f); | |
689 | while (!(PerlIOBase(f)->tab->kind & PERLIO_K_RAW)) | |
dfebf958 | 690 | { |
4b803d04 NIS |
691 | if (*PerlIONext(f)) |
692 | { | |
a999f61b | 693 | PerlIO_pop(aTHX_ f); |
4b803d04 NIS |
694 | } |
695 | else | |
696 | { | |
697 | /* Nothing bellow - push unix on top then remove it */ | |
a999f61b | 698 | if (PerlIO_push(aTHX_ f,PerlIO_default_btm(),mode,arg,len)) |
4b803d04 | 699 | { |
a999f61b | 700 | PerlIO_pop(aTHX_ PerlIONext(f)); |
4b803d04 NIS |
701 | } |
702 | break; | |
703 | } | |
dfebf958 | 704 | } |
26fb694e | 705 | PerlIO_debug(":raw f=%p :%s\n",f,PerlIOBase(f)->tab->name); |
dfebf958 NIS |
706 | return 0; |
707 | } | |
708 | return -1; | |
709 | } | |
710 | ||
ac27b0f5 NIS |
711 | int |
712 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
713 | { | |
1141d9f8 | 714 | int code = 0; |
ac27b0f5 NIS |
715 | if (names) |
716 | { | |
1141d9f8 NIS |
717 | AV *layers = newAV(); |
718 | code = PerlIO_parse_layers(aTHX_ layers,names); | |
719 | if (code == 0) | |
ac27b0f5 | 720 | { |
1141d9f8 NIS |
721 | IV max = av_len(layers)+1; |
722 | IV i; | |
723 | for (i=0; i < max; i += 2) | |
ac27b0f5 | 724 | { |
1141d9f8 NIS |
725 | SV *layer = *av_fetch(layers,i,FALSE); |
726 | PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer))); | |
727 | if (tab) | |
ac27b0f5 | 728 | { |
1141d9f8 NIS |
729 | SV **argp = av_fetch(layers,i+1,FALSE); |
730 | STRLEN alen = 0; | |
731 | char *as = (argp && SvOK(*argp)) ? SvPV(*argp,alen) : Nullch; | |
732 | if (!PerlIO_push(aTHX_ f,tab,mode,as,alen)) | |
60382766 | 733 | { |
1141d9f8 NIS |
734 | code -1; |
735 | break; | |
60382766 | 736 | } |
ac27b0f5 | 737 | } |
ac27b0f5 NIS |
738 | } |
739 | } | |
1141d9f8 | 740 | SvREFCNT_dec((SV *) layers); |
ac27b0f5 | 741 | } |
1141d9f8 | 742 | return code; |
ac27b0f5 NIS |
743 | } |
744 | ||
f3862f8b | 745 | |
60382766 NIS |
746 | /*--------------------------------------------------------------------------------------*/ |
747 | /* Given the abstraction above the public API functions */ | |
748 | ||
749 | int | |
f5b9d040 | 750 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 751 | { |
86295796 | 752 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", |
a4d3c1d3 | 753 | f,PerlIOBase(f)->tab->name,iotype,mode, (names) ? names : "(Null)"); |
33af2bc7 | 754 | if (!names && (O_TEXT != O_BINARY && (mode & O_BINARY))) |
76ced9ad | 755 | { |
f5b9d040 | 756 | PerlIO *top = f; |
60382766 NIS |
757 | PerlIOl *l; |
758 | while (l = *top) | |
76ced9ad | 759 | { |
60382766 NIS |
760 | if (PerlIOBase(top)->tab == &PerlIO_crlf) |
761 | { | |
762 | PerlIO_flush(top); | |
a4d3c1d3 | 763 | PerlIOBase(top)->flags &= ~PERLIO_F_CRLF; |
60382766 NIS |
764 | break; |
765 | } | |
766 | top = PerlIONext(top); | |
76ced9ad NIS |
767 | } |
768 | } | |
f5b9d040 NIS |
769 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; |
770 | } | |
771 | ||
772 | #undef PerlIO__close | |
773 | int | |
774 | PerlIO__close(PerlIO *f) | |
775 | { | |
776 | return (*PerlIOBase(f)->tab->Close)(f); | |
76ced9ad NIS |
777 | } |
778 | ||
5f1a76d0 NIS |
779 | #undef PerlIO_fdupopen |
780 | PerlIO * | |
781 | PerlIO_fdupopen(pTHX_ PerlIO *f) | |
782 | { | |
783 | char buf[8]; | |
784 | int fd = PerlLIO_dup(PerlIO_fileno(f)); | |
785 | PerlIO *new = PerlIO_fdopen(fd,PerlIO_modestr(f,buf)); | |
786 | if (new) | |
787 | { | |
788 | Off_t posn = PerlIO_tell(f); | |
789 | PerlIO_seek(new,posn,SEEK_SET); | |
790 | } | |
766a733e | 791 | return new; |
5f1a76d0 | 792 | } |
f5b9d040 | 793 | |
b931b1d9 NIS |
794 | #undef PerlIO_close |
795 | int | |
796 | PerlIO_close(PerlIO *f) | |
797 | { | |
a999f61b | 798 | dTHX; |
b931b1d9 NIS |
799 | int code = (*PerlIOBase(f)->tab->Close)(f); |
800 | while (*f) | |
801 | { | |
a999f61b | 802 | PerlIO_pop(aTHX_ f); |
b931b1d9 NIS |
803 | } |
804 | return code; | |
805 | } | |
806 | ||
807 | #undef PerlIO_fileno | |
808 | int | |
809 | PerlIO_fileno(PerlIO *f) | |
810 | { | |
811 | return (*PerlIOBase(f)->tab->Fileno)(f); | |
812 | } | |
813 | ||
1141d9f8 NIS |
814 | static const char * |
815 | PerlIO_context_layers(pTHX_ const char *mode) | |
816 | { | |
817 | const char *type = NULL; | |
818 | /* Need to supply default layer info from open.pm */ | |
819 | if (PL_curcop) | |
820 | { | |
821 | SV *layers = PL_curcop->cop_io; | |
822 | if (layers) | |
823 | { | |
824 | STRLEN len; | |
825 | type = SvPV(layers,len); | |
826 | if (type && mode[0] != 'r') | |
827 | { | |
828 | /* Skip to write part */ | |
829 | const char *s = strchr(type,0); | |
830 | if (s && (s-type) < len) | |
831 | { | |
832 | type = s+1; | |
833 | } | |
834 | } | |
835 | } | |
836 | } | |
837 | return type; | |
838 | } | |
839 | ||
ee518936 | 840 | PerlIO_funcs * |
1141d9f8 | 841 | PerlIO_top_layer(pTHX_ const char *layers,const char *mode,int narg, SV **args) |
ee518936 | 842 | { |
1141d9f8 NIS |
843 | if (!layers) |
844 | layers = PerlIO_context_layers(aTHX_ mode); | |
ee518936 NIS |
845 | /* FIXME !!! */ |
846 | return PerlIO_default_top(); | |
847 | } | |
848 | ||
849 | PerlIO * | |
850 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) | |
851 | { | |
1141d9f8 NIS |
852 | PerlIO_funcs *tab = (f && *f) ? PerlIOBase(f)->tab |
853 | : PerlIO_top_layer(aTHX_ layers, mode, narg, args); | |
ee518936 | 854 | if (!_perlio) |
1141d9f8 | 855 | PerlIO_stdstreams(aTHX); |
5e334b7b NIS |
856 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
857 | tab->name,layers,mode,fd,imode,perm,f,narg,args); | |
858 | f = (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,f,narg,args); | |
859 | if (f) | |
860 | { | |
861 | if (layers && *layers) | |
862 | PerlIO_apply_layers(aTHX_ f,mode,layers); | |
863 | } | |
864 | return f; | |
ee518936 | 865 | } |
b931b1d9 NIS |
866 | |
867 | ||
9e353e3b NIS |
868 | #undef PerlIO_fdopen |
869 | PerlIO * | |
870 | PerlIO_fdopen(int fd, const char *mode) | |
871 | { | |
ee518936 NIS |
872 | dTHX; |
873 | return PerlIO_openn(aTHX_ Nullch,mode,fd,0,0,NULL,0,NULL); | |
9e353e3b NIS |
874 | } |
875 | ||
6f9d8c32 NIS |
876 | #undef PerlIO_open |
877 | PerlIO * | |
878 | PerlIO_open(const char *path, const char *mode) | |
879 | { | |
ee518936 NIS |
880 | dTHX; |
881 | SV *name = sv_2mortal(newSVpvn(path,strlen(path))); | |
882 | return PerlIO_openn(aTHX_ Nullch,mode,-1,0,0,NULL,1,&name); | |
6f9d8c32 NIS |
883 | } |
884 | ||
9e353e3b NIS |
885 | #undef PerlIO_reopen |
886 | PerlIO * | |
887 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
6f9d8c32 | 888 | { |
ee518936 NIS |
889 | dTHX; |
890 | SV *name = sv_2mortal(newSVpvn(path,strlen(path))); | |
891 | return PerlIO_openn(aTHX_ Nullch,mode,-1,0,0,f,1,&name); | |
760ac839 LW |
892 | } |
893 | ||
9e353e3b NIS |
894 | #undef PerlIO_read |
895 | SSize_t | |
896 | PerlIO_read(PerlIO *f, void *vbuf, Size_t count) | |
6f9d8c32 | 897 | { |
9e353e3b | 898 | return (*PerlIOBase(f)->tab->Read)(f,vbuf,count); |
760ac839 LW |
899 | } |
900 | ||
313ca112 NIS |
901 | #undef PerlIO_unread |
902 | SSize_t | |
903 | PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 904 | { |
313ca112 | 905 | return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count); |
760ac839 LW |
906 | } |
907 | ||
9e353e3b NIS |
908 | #undef PerlIO_write |
909 | SSize_t | |
910 | PerlIO_write(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 911 | { |
9e353e3b | 912 | return (*PerlIOBase(f)->tab->Write)(f,vbuf,count); |
760ac839 LW |
913 | } |
914 | ||
9e353e3b | 915 | #undef PerlIO_seek |
6f9d8c32 | 916 | int |
9e353e3b | 917 | PerlIO_seek(PerlIO *f, Off_t offset, int whence) |
760ac839 | 918 | { |
9e353e3b | 919 | return (*PerlIOBase(f)->tab->Seek)(f,offset,whence); |
760ac839 LW |
920 | } |
921 | ||
9e353e3b NIS |
922 | #undef PerlIO_tell |
923 | Off_t | |
924 | PerlIO_tell(PerlIO *f) | |
760ac839 | 925 | { |
9e353e3b | 926 | return (*PerlIOBase(f)->tab->Tell)(f); |
760ac839 LW |
927 | } |
928 | ||
9e353e3b | 929 | #undef PerlIO_flush |
6f9d8c32 | 930 | int |
9e353e3b | 931 | PerlIO_flush(PerlIO *f) |
760ac839 | 932 | { |
6f9d8c32 NIS |
933 | if (f) |
934 | { | |
26fb694e NIS |
935 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
936 | if (tab && tab->Flush) | |
937 | { | |
938 | return (*tab->Flush)(f); | |
939 | } | |
940 | else | |
941 | { | |
942 | PerlIO_debug("Cannot flush f=%p :%s\n",f,tab->name); | |
943 | errno = EINVAL; | |
944 | return -1; | |
945 | } | |
6f9d8c32 | 946 | } |
9e353e3b | 947 | else |
6f9d8c32 | 948 | { |
05d1247b | 949 | PerlIO **table = &_perlio; |
9e353e3b | 950 | int code = 0; |
05d1247b | 951 | while ((f = *table)) |
6f9d8c32 | 952 | { |
05d1247b NIS |
953 | int i; |
954 | table = (PerlIO **)(f++); | |
955 | for (i=1; i < PERLIO_TABLE_SIZE; i++) | |
9e353e3b NIS |
956 | { |
957 | if (*f && PerlIO_flush(f) != 0) | |
958 | code = -1; | |
05d1247b | 959 | f++; |
9e353e3b | 960 | } |
6f9d8c32 | 961 | } |
9e353e3b | 962 | return code; |
6f9d8c32 | 963 | } |
760ac839 LW |
964 | } |
965 | ||
06da4f11 NIS |
966 | #undef PerlIO_fill |
967 | int | |
968 | PerlIO_fill(PerlIO *f) | |
969 | { | |
970 | return (*PerlIOBase(f)->tab->Fill)(f); | |
971 | } | |
972 | ||
f3862f8b NIS |
973 | #undef PerlIO_isutf8 |
974 | int | |
975 | PerlIO_isutf8(PerlIO *f) | |
976 | { | |
977 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
978 | } | |
979 | ||
9e353e3b | 980 | #undef PerlIO_eof |
6f9d8c32 | 981 | int |
9e353e3b | 982 | PerlIO_eof(PerlIO *f) |
760ac839 | 983 | { |
9e353e3b NIS |
984 | return (*PerlIOBase(f)->tab->Eof)(f); |
985 | } | |
986 | ||
987 | #undef PerlIO_error | |
988 | int | |
989 | PerlIO_error(PerlIO *f) | |
990 | { | |
991 | return (*PerlIOBase(f)->tab->Error)(f); | |
992 | } | |
993 | ||
994 | #undef PerlIO_clearerr | |
995 | void | |
996 | PerlIO_clearerr(PerlIO *f) | |
997 | { | |
f5b9d040 NIS |
998 | if (f && *f) |
999 | (*PerlIOBase(f)->tab->Clearerr)(f); | |
9e353e3b NIS |
1000 | } |
1001 | ||
1002 | #undef PerlIO_setlinebuf | |
1003 | void | |
1004 | PerlIO_setlinebuf(PerlIO *f) | |
1005 | { | |
1006 | (*PerlIOBase(f)->tab->Setlinebuf)(f); | |
1007 | } | |
1008 | ||
1009 | #undef PerlIO_has_base | |
1010 | int | |
1011 | PerlIO_has_base(PerlIO *f) | |
1012 | { | |
1013 | if (f && *f) | |
6f9d8c32 | 1014 | { |
9e353e3b | 1015 | return (PerlIOBase(f)->tab->Get_base != NULL); |
6f9d8c32 | 1016 | } |
9e353e3b | 1017 | return 0; |
760ac839 LW |
1018 | } |
1019 | ||
9e353e3b NIS |
1020 | #undef PerlIO_fast_gets |
1021 | int | |
1022 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1023 | { |
5e2ab84b | 1024 | if (f && *f && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) |
6f9d8c32 | 1025 | { |
5e2ab84b NIS |
1026 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1027 | return (tab->Set_ptrcnt != NULL); | |
6f9d8c32 | 1028 | } |
9e353e3b NIS |
1029 | return 0; |
1030 | } | |
1031 | ||
1032 | #undef PerlIO_has_cntptr | |
1033 | int | |
1034 | PerlIO_has_cntptr(PerlIO *f) | |
1035 | { | |
1036 | if (f && *f) | |
1037 | { | |
1038 | PerlIO_funcs *tab = PerlIOBase(f)->tab; | |
1039 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1040 | } | |
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | #undef PerlIO_canset_cnt | |
1045 | int | |
1046 | PerlIO_canset_cnt(PerlIO *f) | |
1047 | { | |
1048 | if (f && *f) | |
1049 | { | |
c7fc522f NIS |
1050 | PerlIOl *l = PerlIOBase(f); |
1051 | return (l->tab->Set_ptrcnt != NULL); | |
9e353e3b | 1052 | } |
c7fc522f | 1053 | return 0; |
760ac839 LW |
1054 | } |
1055 | ||
1056 | #undef PerlIO_get_base | |
888911fc | 1057 | STDCHAR * |
a20bf0c3 | 1058 | PerlIO_get_base(PerlIO *f) |
760ac839 | 1059 | { |
9e353e3b NIS |
1060 | return (*PerlIOBase(f)->tab->Get_base)(f); |
1061 | } | |
1062 | ||
1063 | #undef PerlIO_get_bufsiz | |
1064 | int | |
1065 | PerlIO_get_bufsiz(PerlIO *f) | |
1066 | { | |
1067 | return (*PerlIOBase(f)->tab->Get_bufsiz)(f); | |
1068 | } | |
1069 | ||
1070 | #undef PerlIO_get_ptr | |
1071 | STDCHAR * | |
1072 | PerlIO_get_ptr(PerlIO *f) | |
1073 | { | |
5e2ab84b NIS |
1074 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1075 | if (tab->Get_ptr == NULL) | |
1076 | return NULL; | |
1077 | return (*tab->Get_ptr)(f); | |
9e353e3b NIS |
1078 | } |
1079 | ||
1080 | #undef PerlIO_get_cnt | |
05d1247b | 1081 | int |
9e353e3b NIS |
1082 | PerlIO_get_cnt(PerlIO *f) |
1083 | { | |
5e2ab84b NIS |
1084 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1085 | if (tab->Get_cnt == NULL) | |
1086 | return 0; | |
1087 | return (*tab->Get_cnt)(f); | |
9e353e3b NIS |
1088 | } |
1089 | ||
1090 | #undef PerlIO_set_cnt | |
1091 | void | |
05d1247b | 1092 | PerlIO_set_cnt(PerlIO *f,int cnt) |
9e353e3b | 1093 | { |
f3862f8b | 1094 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt); |
9e353e3b NIS |
1095 | } |
1096 | ||
1097 | #undef PerlIO_set_ptrcnt | |
1098 | void | |
05d1247b | 1099 | PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) |
9e353e3b | 1100 | { |
5e2ab84b NIS |
1101 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1102 | if (tab->Set_ptrcnt == NULL) | |
1103 | { | |
1104 | dTHX; | |
1105 | Perl_croak(aTHX_ "PerlIO buffer snooping abuse"); | |
1106 | } | |
f3862f8b | 1107 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt); |
9e353e3b NIS |
1108 | } |
1109 | ||
1110 | /*--------------------------------------------------------------------------------------*/ | |
dfebf958 NIS |
1111 | /* utf8 and raw dummy layers */ |
1112 | ||
26fb694e NIS |
1113 | IV |
1114 | PerlIOUtf8_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) | |
1115 | { | |
1116 | if (PerlIONext(f)) | |
1117 | { | |
a999f61b | 1118 | dTHX; |
26fb694e | 1119 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
a999f61b | 1120 | PerlIO_pop(aTHX_ f); |
26fb694e NIS |
1121 | if (tab->kind & PERLIO_K_UTF8) |
1122 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1123 | else | |
1124 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1125 | return 0; | |
1126 | } | |
1127 | return -1; | |
1128 | } | |
1129 | ||
dfebf958 | 1130 | PerlIO * |
ee518936 | 1131 | PerlIOUtf8_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args) |
dfebf958 | 1132 | { |
a999f61b | 1133 | PerlIO_funcs *tab = PerlIO_default_layer(aTHX_ -2); |
ee518936 | 1134 | PerlIO *f = (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,old,narg,args); |
dfebf958 NIS |
1135 | if (f) |
1136 | { | |
26fb694e NIS |
1137 | PerlIOl *l = PerlIOBase(f); |
1138 | if (tab->kind & PERLIO_K_UTF8) | |
1139 | l->flags |= PERLIO_F_UTF8; | |
1140 | else | |
1141 | l->flags &= ~PERLIO_F_UTF8; | |
1142 | } | |
dfebf958 NIS |
1143 | return f; |
1144 | } | |
1145 | ||
dfebf958 NIS |
1146 | PerlIO_funcs PerlIO_utf8 = { |
1147 | "utf8", | |
1148 | sizeof(PerlIOl), | |
26fb694e NIS |
1149 | PERLIO_K_DUMMY|PERLIO_F_UTF8, |
1150 | NULL, | |
26fb694e | 1151 | PerlIOUtf8_open, |
26fb694e NIS |
1152 | PerlIOUtf8_pushed, |
1153 | NULL, | |
1154 | NULL, | |
1155 | NULL, | |
1156 | NULL, | |
1157 | NULL, | |
1158 | NULL, | |
1159 | NULL, | |
1160 | NULL, /* flush */ | |
1161 | NULL, /* fill */ | |
1162 | NULL, | |
1163 | NULL, | |
1164 | NULL, | |
1165 | NULL, | |
1166 | NULL, /* get_base */ | |
1167 | NULL, /* get_bufsiz */ | |
1168 | NULL, /* get_ptr */ | |
1169 | NULL, /* get_cnt */ | |
1170 | NULL, /* set_ptrcnt */ | |
1171 | }; | |
1172 | ||
1173 | PerlIO_funcs PerlIO_byte = { | |
1174 | "bytes", | |
1175 | sizeof(PerlIOl), | |
1176 | PERLIO_K_DUMMY, | |
dfebf958 | 1177 | NULL, |
dfebf958 | 1178 | PerlIOUtf8_open, |
dfebf958 NIS |
1179 | PerlIOUtf8_pushed, |
1180 | NULL, | |
1181 | NULL, | |
1182 | NULL, | |
1183 | NULL, | |
1184 | NULL, | |
1185 | NULL, | |
1186 | NULL, | |
1187 | NULL, /* flush */ | |
1188 | NULL, /* fill */ | |
1189 | NULL, | |
1190 | NULL, | |
1191 | NULL, | |
1192 | NULL, | |
1193 | NULL, /* get_base */ | |
1194 | NULL, /* get_bufsiz */ | |
1195 | NULL, /* get_ptr */ | |
1196 | NULL, /* get_cnt */ | |
1197 | NULL, /* set_ptrcnt */ | |
1198 | }; | |
1199 | ||
1200 | PerlIO * | |
ee518936 | 1201 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args) |
dfebf958 | 1202 | { |
4b803d04 | 1203 | PerlIO_funcs *tab = PerlIO_default_btm(); |
ee518936 | 1204 | return (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,old,narg,args); |
dfebf958 NIS |
1205 | } |
1206 | ||
1207 | PerlIO_funcs PerlIO_raw = { | |
1208 | "raw", | |
1209 | sizeof(PerlIOl), | |
4b803d04 | 1210 | PERLIO_K_DUMMY, |
dfebf958 | 1211 | NULL, |
dfebf958 | 1212 | PerlIORaw_open, |
dfebf958 | 1213 | PerlIORaw_pushed, |
26fb694e | 1214 | PerlIOBase_popped, |
dfebf958 NIS |
1215 | NULL, |
1216 | NULL, | |
1217 | NULL, | |
1218 | NULL, | |
1219 | NULL, | |
1220 | NULL, | |
1221 | NULL, /* flush */ | |
1222 | NULL, /* fill */ | |
1223 | NULL, | |
1224 | NULL, | |
1225 | NULL, | |
1226 | NULL, | |
1227 | NULL, /* get_base */ | |
1228 | NULL, /* get_bufsiz */ | |
1229 | NULL, /* get_ptr */ | |
1230 | NULL, /* get_cnt */ | |
1231 | NULL, /* set_ptrcnt */ | |
1232 | }; | |
1233 | /*--------------------------------------------------------------------------------------*/ | |
1234 | /*--------------------------------------------------------------------------------------*/ | |
9e353e3b NIS |
1235 | /* "Methods" of the "base class" */ |
1236 | ||
1237 | IV | |
1238 | PerlIOBase_fileno(PerlIO *f) | |
1239 | { | |
1240 | return PerlIO_fileno(PerlIONext(f)); | |
1241 | } | |
1242 | ||
f5b9d040 NIS |
1243 | char * |
1244 | PerlIO_modestr(PerlIO *f,char *buf) | |
1245 | { | |
1246 | char *s = buf; | |
1247 | IV flags = PerlIOBase(f)->flags; | |
5f1a76d0 NIS |
1248 | if (flags & PERLIO_F_APPEND) |
1249 | { | |
1250 | *s++ = 'a'; | |
1251 | if (flags & PERLIO_F_CANREAD) | |
1252 | { | |
1253 | *s++ = '+'; | |
1254 | } | |
766a733e | 1255 | } |
5f1a76d0 NIS |
1256 | else if (flags & PERLIO_F_CANREAD) |
1257 | { | |
1258 | *s++ = 'r'; | |
1259 | if (flags & PERLIO_F_CANWRITE) | |
1260 | *s++ = '+'; | |
1261 | } | |
1262 | else if (flags & PERLIO_F_CANWRITE) | |
1263 | { | |
1264 | *s++ = 'w'; | |
1265 | if (flags & PERLIO_F_CANREAD) | |
1266 | { | |
1267 | *s++ = '+'; | |
1268 | } | |
1269 | } | |
1270 | #if O_TEXT != O_BINARY | |
1271 | if (!(flags & PERLIO_F_CRLF)) | |
a4d3c1d3 | 1272 | *s++ = 'b'; |
5f1a76d0 | 1273 | #endif |
f5b9d040 NIS |
1274 | *s = '\0'; |
1275 | return buf; | |
1276 | } | |
1277 | ||
76ced9ad | 1278 | IV |
33af2bc7 | 1279 | PerlIOBase_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) |
9e353e3b | 1280 | { |
76ced9ad | 1281 | PerlIOl *l = PerlIOBase(f); |
f5b9d040 NIS |
1282 | const char *omode = mode; |
1283 | char temp[8]; | |
5e2ab84b | 1284 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
76ced9ad | 1285 | l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
f5b9d040 | 1286 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND); |
5e2ab84b NIS |
1287 | if (tab->Set_ptrcnt != NULL) |
1288 | l->flags |= PERLIO_F_FASTGETS; | |
76ced9ad | 1289 | if (mode) |
6f9d8c32 | 1290 | { |
76ced9ad | 1291 | switch (*mode++) |
06da4f11 | 1292 | { |
76ced9ad | 1293 | case 'r': |
f5b9d040 | 1294 | l->flags |= PERLIO_F_CANREAD; |
76ced9ad NIS |
1295 | break; |
1296 | case 'a': | |
f5b9d040 | 1297 | l->flags |= PERLIO_F_APPEND|PERLIO_F_CANWRITE; |
76ced9ad NIS |
1298 | break; |
1299 | case 'w': | |
f5b9d040 | 1300 | l->flags |= PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE; |
76ced9ad NIS |
1301 | break; |
1302 | default: | |
1303 | errno = EINVAL; | |
1304 | return -1; | |
1305 | } | |
1306 | while (*mode) | |
1307 | { | |
1308 | switch (*mode++) | |
1309 | { | |
1310 | case '+': | |
1311 | l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE; | |
1312 | break; | |
1313 | case 'b': | |
f5b9d040 NIS |
1314 | l->flags &= ~PERLIO_F_CRLF; |
1315 | break; | |
1316 | case 't': | |
1317 | l->flags |= PERLIO_F_CRLF; | |
76ced9ad NIS |
1318 | break; |
1319 | default: | |
1320 | errno = EINVAL; | |
1321 | return -1; | |
1322 | } | |
06da4f11 | 1323 | } |
6f9d8c32 | 1324 | } |
76ced9ad NIS |
1325 | else |
1326 | { | |
1327 | if (l->next) | |
1328 | { | |
1329 | l->flags |= l->next->flags & | |
f5b9d040 | 1330 | (PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_TRUNCATE|PERLIO_F_APPEND); |
76ced9ad NIS |
1331 | } |
1332 | } | |
5e2ab84b | 1333 | #if 0 |
4659c93f | 1334 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08"UVxf" (%s)\n", |
f5b9d040 | 1335 | f,PerlIOBase(f)->tab->name,(omode) ? omode : "(Null)", |
a4d3c1d3 | 1336 | l->flags,PerlIO_modestr(f,temp)); |
5e2ab84b | 1337 | #endif |
76ced9ad NIS |
1338 | return 0; |
1339 | } | |
1340 | ||
1341 | IV | |
1342 | PerlIOBase_popped(PerlIO *f) | |
1343 | { | |
1344 | return 0; | |
760ac839 LW |
1345 | } |
1346 | ||
9e353e3b NIS |
1347 | SSize_t |
1348 | PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count) | |
1349 | { | |
a999f61b | 1350 | dTHX; |
9e353e3b | 1351 | Off_t old = PerlIO_tell(f); |
72e44f29 | 1352 | SSize_t done; |
a999f61b | 1353 | PerlIO_push(aTHX_ f,&PerlIO_pending,"r",Nullch,0); |
72e44f29 NIS |
1354 | done = PerlIOBuf_unread(f,vbuf,count); |
1355 | PerlIOSelf(f,PerlIOBuf)->posn = old - done; | |
1356 | return done; | |
9e353e3b NIS |
1357 | } |
1358 | ||
1359 | IV | |
06da4f11 | 1360 | PerlIOBase_noop_ok(PerlIO *f) |
9e353e3b NIS |
1361 | { |
1362 | return 0; | |
1363 | } | |
1364 | ||
1365 | IV | |
06da4f11 NIS |
1366 | PerlIOBase_noop_fail(PerlIO *f) |
1367 | { | |
1368 | return -1; | |
1369 | } | |
1370 | ||
1371 | IV | |
9e353e3b NIS |
1372 | PerlIOBase_close(PerlIO *f) |
1373 | { | |
1374 | IV code = 0; | |
f5b9d040 | 1375 | PerlIO *n = PerlIONext(f); |
9e353e3b NIS |
1376 | if (PerlIO_flush(f) != 0) |
1377 | code = -1; | |
f5b9d040 | 1378 | if (n && (*PerlIOBase(n)->tab->Close)(n) != 0) |
9e353e3b NIS |
1379 | code = -1; |
1380 | PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN); | |
1381 | return code; | |
1382 | } | |
1383 | ||
1384 | IV | |
1385 | PerlIOBase_eof(PerlIO *f) | |
1386 | { | |
1387 | if (f && *f) | |
1388 | { | |
1389 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; | |
1390 | } | |
1391 | return 1; | |
1392 | } | |
1393 | ||
1394 | IV | |
1395 | PerlIOBase_error(PerlIO *f) | |
1396 | { | |
1397 | if (f && *f) | |
1398 | { | |
1399 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; | |
1400 | } | |
1401 | return 1; | |
1402 | } | |
1403 | ||
1404 | void | |
1405 | PerlIOBase_clearerr(PerlIO *f) | |
1406 | { | |
1407 | if (f && *f) | |
1408 | { | |
f5b9d040 NIS |
1409 | PerlIO *n = PerlIONext(f); |
1410 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR|PERLIO_F_EOF); | |
1411 | if (n) | |
1412 | PerlIO_clearerr(n); | |
9e353e3b NIS |
1413 | } |
1414 | } | |
1415 | ||
1416 | void | |
1417 | PerlIOBase_setlinebuf(PerlIO *f) | |
1418 | { | |
1419 | ||
1420 | } | |
1421 | ||
9e353e3b NIS |
1422 | /*--------------------------------------------------------------------------------------*/ |
1423 | /* Bottom-most level for UNIX-like case */ | |
1424 | ||
1425 | typedef struct | |
1426 | { | |
1427 | struct _PerlIO base; /* The generic part */ | |
1428 | int fd; /* UNIX like file descriptor */ | |
1429 | int oflags; /* open/fcntl flags */ | |
1430 | } PerlIOUnix; | |
1431 | ||
6f9d8c32 | 1432 | int |
9e353e3b | 1433 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 1434 | { |
9e353e3b NIS |
1435 | int oflags = -1; |
1436 | switch(*mode) | |
1437 | { | |
1438 | case 'r': | |
1439 | oflags = O_RDONLY; | |
1440 | if (*++mode == '+') | |
1441 | { | |
1442 | oflags = O_RDWR; | |
1443 | mode++; | |
1444 | } | |
1445 | break; | |
1446 | ||
1447 | case 'w': | |
1448 | oflags = O_CREAT|O_TRUNC; | |
1449 | if (*++mode == '+') | |
1450 | { | |
1451 | oflags |= O_RDWR; | |
1452 | mode++; | |
1453 | } | |
1454 | else | |
1455 | oflags |= O_WRONLY; | |
1456 | break; | |
1457 | ||
1458 | case 'a': | |
1459 | oflags = O_CREAT|O_APPEND; | |
1460 | if (*++mode == '+') | |
1461 | { | |
1462 | oflags |= O_RDWR; | |
1463 | mode++; | |
1464 | } | |
1465 | else | |
1466 | oflags |= O_WRONLY; | |
1467 | break; | |
1468 | } | |
83b075c3 NIS |
1469 | if (*mode == 'b') |
1470 | { | |
f5b9d040 NIS |
1471 | oflags |= O_BINARY; |
1472 | oflags &= ~O_TEXT; | |
1473 | mode++; | |
1474 | } | |
1475 | else if (*mode == 't') | |
1476 | { | |
1477 | oflags |= O_TEXT; | |
1478 | oflags &= ~O_BINARY; | |
60382766 NIS |
1479 | mode++; |
1480 | } | |
99efab12 NIS |
1481 | /* Always open in binary mode */ |
1482 | oflags |= O_BINARY; | |
9e353e3b | 1483 | if (*mode || oflags == -1) |
6f9d8c32 | 1484 | { |
9e353e3b NIS |
1485 | errno = EINVAL; |
1486 | oflags = -1; | |
6f9d8c32 | 1487 | } |
9e353e3b NIS |
1488 | return oflags; |
1489 | } | |
1490 | ||
1491 | IV | |
1492 | PerlIOUnix_fileno(PerlIO *f) | |
1493 | { | |
1494 | return PerlIOSelf(f,PerlIOUnix)->fd; | |
1495 | } | |
1496 | ||
4b803d04 NIS |
1497 | IV |
1498 | PerlIOUnix_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) | |
1499 | { | |
1500 | IV code = PerlIOBase_pushed(f,mode,arg,len); | |
1501 | if (*PerlIONext(f)) | |
1502 | { | |
1503 | PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix); | |
1504 | s->fd = PerlIO_fileno(PerlIONext(f)); | |
1505 | s->oflags = PerlIOUnix_oflags(mode); | |
1506 | } | |
1507 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
1508 | return code; | |
1509 | } | |
1510 | ||
9e353e3b | 1511 | PerlIO * |
ee518936 | 1512 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
9e353e3b | 1513 | { |
ee518936 | 1514 | if (f) |
9e353e3b | 1515 | { |
ee518936 NIS |
1516 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
1517 | (*PerlIOBase(f)->tab->Close)(f); | |
1518 | } | |
1519 | if (narg > 0) | |
1520 | { | |
1521 | char *path = SvPV_nolen(*args); | |
1522 | if (*mode == '#') | |
1523 | mode++; | |
1524 | else | |
9e353e3b | 1525 | { |
ee518936 NIS |
1526 | imode = PerlIOUnix_oflags(mode); |
1527 | perm = 0666; | |
1528 | } | |
1529 | if (imode != -1) | |
1530 | { | |
1531 | fd = PerlLIO_open3(path,imode,perm); | |
9e353e3b NIS |
1532 | } |
1533 | } | |
ee518936 | 1534 | if (fd >= 0) |
9e353e3b | 1535 | { |
ee518936 NIS |
1536 | PerlIOUnix *s; |
1537 | if (*mode == 'I') | |
1538 | mode++; | |
1539 | if (!f) | |
9e353e3b | 1540 | { |
ee518936 | 1541 | f = PerlIO_allocate(aTHX); |
a999f61b | 1542 | s = PerlIOSelf(PerlIO_push(aTHX_ f,self,mode,Nullch,0),PerlIOUnix); |
ee518936 NIS |
1543 | } |
1544 | else | |
1545 | s = PerlIOSelf(f,PerlIOUnix); | |
1546 | s->fd = fd; | |
1547 | s->oflags = imode; | |
1548 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
1549 | return f; | |
1550 | } | |
1551 | else | |
1552 | { | |
1553 | if (f) | |
1554 | { | |
1555 | /* FIXME: pop layers ??? */ | |
9e353e3b | 1556 | } |
ee518936 | 1557 | return NULL; |
9e353e3b | 1558 | } |
9e353e3b NIS |
1559 | } |
1560 | ||
1561 | SSize_t | |
1562 | PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count) | |
1563 | { | |
adb71456 | 1564 | dTHX; |
9e353e3b | 1565 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
8f24bd79 NIS |
1566 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
1567 | return 0; | |
9e353e3b NIS |
1568 | while (1) |
1569 | { | |
00b02797 | 1570 | SSize_t len = PerlLIO_read(fd,vbuf,count); |
9e353e3b | 1571 | if (len >= 0 || errno != EINTR) |
06da4f11 NIS |
1572 | { |
1573 | if (len < 0) | |
1574 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
1575 | else if (len == 0 && count != 0) | |
1576 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
1577 | return len; | |
1578 | } | |
0a8e0eff | 1579 | PERL_ASYNC_CHECK(); |
9e353e3b NIS |
1580 | } |
1581 | } | |
1582 | ||
1583 | SSize_t | |
1584 | PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count) | |
1585 | { | |
adb71456 | 1586 | dTHX; |
9e353e3b NIS |
1587 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1588 | while (1) | |
1589 | { | |
00b02797 | 1590 | SSize_t len = PerlLIO_write(fd,vbuf,count); |
9e353e3b | 1591 | if (len >= 0 || errno != EINTR) |
06da4f11 NIS |
1592 | { |
1593 | if (len < 0) | |
1594 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
1595 | return len; | |
1596 | } | |
0a8e0eff | 1597 | PERL_ASYNC_CHECK(); |
9e353e3b NIS |
1598 | } |
1599 | } | |
1600 | ||
1601 | IV | |
1602 | PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence) | |
1603 | { | |
adb71456 | 1604 | dTHX; |
00b02797 | 1605 | Off_t new = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence); |
06da4f11 | 1606 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
9e353e3b NIS |
1607 | return (new == (Off_t) -1) ? -1 : 0; |
1608 | } | |
1609 | ||
1610 | Off_t | |
1611 | PerlIOUnix_tell(PerlIO *f) | |
1612 | { | |
adb71456 | 1613 | dTHX; |
766a733e | 1614 | Off_t posn = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
00b02797 | 1615 | return PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
9e353e3b NIS |
1616 | } |
1617 | ||
1618 | IV | |
1619 | PerlIOUnix_close(PerlIO *f) | |
1620 | { | |
adb71456 | 1621 | dTHX; |
9e353e3b NIS |
1622 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1623 | int code = 0; | |
00b02797 | 1624 | while (PerlLIO_close(fd) != 0) |
9e353e3b NIS |
1625 | { |
1626 | if (errno != EINTR) | |
1627 | { | |
1628 | code = -1; | |
1629 | break; | |
1630 | } | |
0a8e0eff | 1631 | PERL_ASYNC_CHECK(); |
9e353e3b NIS |
1632 | } |
1633 | if (code == 0) | |
1634 | { | |
1635 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
1636 | } | |
1637 | return code; | |
1638 | } | |
1639 | ||
1640 | PerlIO_funcs PerlIO_unix = { | |
1641 | "unix", | |
1642 | sizeof(PerlIOUnix), | |
f5b9d040 | 1643 | PERLIO_K_RAW, |
9e353e3b | 1644 | PerlIOUnix_fileno, |
9e353e3b | 1645 | PerlIOUnix_open, |
4b803d04 | 1646 | PerlIOUnix_pushed, |
06da4f11 | 1647 | PerlIOBase_noop_ok, |
9e353e3b NIS |
1648 | PerlIOUnix_read, |
1649 | PerlIOBase_unread, | |
1650 | PerlIOUnix_write, | |
1651 | PerlIOUnix_seek, | |
1652 | PerlIOUnix_tell, | |
1653 | PerlIOUnix_close, | |
76ced9ad NIS |
1654 | PerlIOBase_noop_ok, /* flush */ |
1655 | PerlIOBase_noop_fail, /* fill */ | |
9e353e3b NIS |
1656 | PerlIOBase_eof, |
1657 | PerlIOBase_error, | |
1658 | PerlIOBase_clearerr, | |
1659 | PerlIOBase_setlinebuf, | |
1660 | NULL, /* get_base */ | |
1661 | NULL, /* get_bufsiz */ | |
1662 | NULL, /* get_ptr */ | |
1663 | NULL, /* get_cnt */ | |
1664 | NULL, /* set_ptrcnt */ | |
1665 | }; | |
1666 | ||
1667 | /*--------------------------------------------------------------------------------------*/ | |
1668 | /* stdio as a layer */ | |
1669 | ||
1670 | typedef struct | |
1671 | { | |
1672 | struct _PerlIO base; | |
1673 | FILE * stdio; /* The stream */ | |
1674 | } PerlIOStdio; | |
1675 | ||
1676 | IV | |
1677 | PerlIOStdio_fileno(PerlIO *f) | |
1678 | { | |
adb71456 | 1679 | dTHX; |
eaf8b698 | 1680 | return PerlSIO_fileno(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1681 | } |
1682 | ||
766a733e | 1683 | char * |
f5b9d040 NIS |
1684 | PerlIOStdio_mode(const char *mode,char *tmode) |
1685 | { | |
766a733e NIS |
1686 | char *ret = tmode; |
1687 | while (*mode) | |
1688 | { | |
1689 | *tmode++ = *mode++; | |
1690 | } | |
f5b9d040 NIS |
1691 | if (O_BINARY != O_TEXT) |
1692 | { | |
f5b9d040 | 1693 | *tmode++ = 'b'; |
f5b9d040 | 1694 | } |
766a733e | 1695 | *tmode = '\0'; |
f5b9d040 NIS |
1696 | return ret; |
1697 | } | |
9e353e3b | 1698 | |
4b803d04 NIS |
1699 | /* This isn't used yet ... */ |
1700 | IV | |
1701 | PerlIOStdio_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) | |
1702 | { | |
b86471a1 | 1703 | dTHX; |
4b803d04 NIS |
1704 | if (*PerlIONext(f)) |
1705 | { | |
1706 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); | |
1707 | char tmode[8]; | |
1708 | FILE *stdio = PerlSIO_fdopen(PerlIO_fileno(PerlIONext(f)),mode = PerlIOStdio_mode(mode,tmode)); | |
1709 | if (stdio) | |
1710 | s->stdio = stdio; | |
1711 | else | |
1712 | return -1; | |
1713 | } | |
1714 | return PerlIOBase_pushed(f,mode,arg,len); | |
1715 | } | |
1716 | ||
9e353e3b NIS |
1717 | #undef PerlIO_importFILE |
1718 | PerlIO * | |
1719 | PerlIO_importFILE(FILE *stdio, int fl) | |
1720 | { | |
5f1a76d0 | 1721 | dTHX; |
9e353e3b NIS |
1722 | PerlIO *f = NULL; |
1723 | if (stdio) | |
1724 | { | |
a999f61b | 1725 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),&PerlIO_stdio,"r+",Nullch,0),PerlIOStdio); |
9e353e3b NIS |
1726 | s->stdio = stdio; |
1727 | } | |
1728 | return f; | |
1729 | } | |
1730 | ||
1731 | PerlIO * | |
ee518936 | 1732 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
9e353e3b | 1733 | { |
ee518936 NIS |
1734 | char tmode[8]; |
1735 | if (f) | |
9e353e3b | 1736 | { |
ee518936 NIS |
1737 | char *path = SvPV_nolen(*args); |
1738 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); | |
1739 | FILE *stdio = PerlSIO_freopen(path,(mode = PerlIOStdio_mode(mode,tmode)),s->stdio); | |
1740 | if (!s->stdio) | |
1741 | return NULL; | |
1742 | s->stdio = stdio; | |
1743 | return f; | |
9e353e3b | 1744 | } |
ee518936 NIS |
1745 | else |
1746 | { | |
1747 | if (narg > 0) | |
1748 | { | |
1749 | char *path = SvPV_nolen(*args); | |
1750 | if (*mode == '#') | |
1751 | { | |
1752 | mode++; | |
1753 | fd = PerlLIO_open3(path,imode,perm); | |
1754 | } | |
1755 | else | |
1756 | { | |
1757 | FILE *stdio = PerlSIO_fopen(path,mode); | |
1758 | if (stdio) | |
1759 | { | |
a999f61b | 1760 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)), self, |
ee518936 NIS |
1761 | (mode = PerlIOStdio_mode(mode,tmode)),Nullch,0), |
1762 | PerlIOStdio); | |
1763 | s->stdio = stdio; | |
1764 | } | |
1765 | return f; | |
1766 | } | |
1767 | } | |
1768 | if (fd >= 0) | |
1769 | { | |
1770 | FILE *stdio = NULL; | |
1771 | int init = 0; | |
1772 | if (*mode == 'I') | |
1773 | { | |
1774 | init = 1; | |
1775 | mode++; | |
1776 | } | |
1777 | if (init) | |
1778 | { | |
1779 | switch(fd) | |
1780 | { | |
1781 | case 0: | |
1782 | stdio = PerlSIO_stdin; | |
1783 | break; | |
1784 | case 1: | |
1785 | stdio = PerlSIO_stdout; | |
1786 | break; | |
1787 | case 2: | |
1788 | stdio = PerlSIO_stderr; | |
1789 | break; | |
1790 | } | |
1791 | } | |
1792 | else | |
1793 | { | |
1794 | stdio = PerlSIO_fdopen(fd,mode = PerlIOStdio_mode(mode,tmode)); | |
1795 | } | |
1796 | if (stdio) | |
1797 | { | |
a999f61b | 1798 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),self,mode,Nullch,0),PerlIOStdio); |
ee518936 NIS |
1799 | s->stdio = stdio; |
1800 | return f; | |
1801 | } | |
1802 | } | |
1803 | } | |
1804 | return NULL; | |
9e353e3b NIS |
1805 | } |
1806 | ||
1807 | SSize_t | |
1808 | PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count) | |
1809 | { | |
adb71456 | 1810 | dTHX; |
9e353e3b | 1811 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
c7fc522f | 1812 | SSize_t got = 0; |
9e353e3b NIS |
1813 | if (count == 1) |
1814 | { | |
1815 | STDCHAR *buf = (STDCHAR *) vbuf; | |
1816 | /* Perl is expecting PerlIO_getc() to fill the buffer | |
1817 | * Linux's stdio does not do that for fread() | |
1818 | */ | |
eaf8b698 | 1819 | int ch = PerlSIO_fgetc(s); |
9e353e3b NIS |
1820 | if (ch != EOF) |
1821 | { | |
1822 | *buf = ch; | |
c7fc522f | 1823 | got = 1; |
9e353e3b | 1824 | } |
9e353e3b | 1825 | } |
c7fc522f | 1826 | else |
eaf8b698 | 1827 | got = PerlSIO_fread(vbuf,1,count,s); |
c7fc522f | 1828 | return got; |
9e353e3b NIS |
1829 | } |
1830 | ||
1831 | SSize_t | |
1832 | PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count) | |
1833 | { | |
adb71456 | 1834 | dTHX; |
9e353e3b NIS |
1835 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
1836 | STDCHAR *buf = ((STDCHAR *)vbuf)+count-1; | |
1837 | SSize_t unread = 0; | |
1838 | while (count > 0) | |
1839 | { | |
1840 | int ch = *buf-- & 0xff; | |
eaf8b698 | 1841 | if (PerlSIO_ungetc(ch,s) != ch) |
9e353e3b NIS |
1842 | break; |
1843 | unread++; | |
1844 | count--; | |
1845 | } | |
1846 | return unread; | |
1847 | } | |
1848 | ||
1849 | SSize_t | |
1850 | PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count) | |
1851 | { | |
adb71456 | 1852 | dTHX; |
eaf8b698 | 1853 | return PerlSIO_fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1854 | } |
1855 | ||
1856 | IV | |
1857 | PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence) | |
1858 | { | |
adb71456 | 1859 | dTHX; |
c7fc522f | 1860 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1861 | return PerlSIO_fseek(stdio,offset,whence); |
9e353e3b NIS |
1862 | } |
1863 | ||
1864 | Off_t | |
1865 | PerlIOStdio_tell(PerlIO *f) | |
1866 | { | |
adb71456 | 1867 | dTHX; |
c7fc522f | 1868 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1869 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
1870 | } |
1871 | ||
1872 | IV | |
1873 | PerlIOStdio_close(PerlIO *f) | |
1874 | { | |
adb71456 | 1875 | dTHX; |
405b3941 | 1876 | #ifdef HAS_SOCKS5_INIT |
cf829ab0 | 1877 | int optval, optlen = sizeof(int); |
8e4bc33b | 1878 | #endif |
3789aae2 | 1879 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
cf829ab0 | 1880 | return( |
405b3941 | 1881 | #ifdef HAS_SOCKS5_INIT |
a4d3c1d3 | 1882 | (getsockopt(PerlIO_fileno(f), SOL_SOCKET, SO_TYPE, (char *)&optval, &optlen) < 0) ? |
eaf8b698 | 1883 | PerlSIO_fclose(stdio) : |
8e4bc33b YST |
1884 | close(PerlIO_fileno(f)) |
1885 | #else | |
1886 | PerlSIO_fclose(stdio) | |
1887 | #endif | |
1888 | ); | |
1889 | ||
9e353e3b NIS |
1890 | } |
1891 | ||
1892 | IV | |
1893 | PerlIOStdio_flush(PerlIO *f) | |
1894 | { | |
adb71456 | 1895 | dTHX; |
9e353e3b | 1896 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
88b61e10 NIS |
1897 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) |
1898 | { | |
eaf8b698 | 1899 | return PerlSIO_fflush(stdio); |
88b61e10 NIS |
1900 | } |
1901 | else | |
1902 | { | |
1903 | #if 0 | |
1904 | /* FIXME: This discards ungetc() and pre-read stuff which is | |
1905 | not right if this is just a "sync" from a layer above | |
1906 | Suspect right design is to do _this_ but not have layer above | |
1907 | flush this layer read-to-read | |
1908 | */ | |
1909 | /* Not writeable - sync by attempting a seek */ | |
1910 | int err = errno; | |
eaf8b698 | 1911 | if (PerlSIO_fseek(stdio,(Off_t) 0, SEEK_CUR) != 0) |
88b61e10 NIS |
1912 | errno = err; |
1913 | #endif | |
1914 | } | |
1915 | return 0; | |
9e353e3b NIS |
1916 | } |
1917 | ||
1918 | IV | |
06da4f11 NIS |
1919 | PerlIOStdio_fill(PerlIO *f) |
1920 | { | |
adb71456 | 1921 | dTHX; |
06da4f11 NIS |
1922 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1923 | int c; | |
3789aae2 NIS |
1924 | /* fflush()ing read-only streams can cause trouble on some stdio-s */ |
1925 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
1926 | { | |
eaf8b698 | 1927 | if (PerlSIO_fflush(stdio) != 0) |
3789aae2 NIS |
1928 | return EOF; |
1929 | } | |
eaf8b698 NIS |
1930 | c = PerlSIO_fgetc(stdio); |
1931 | if (c == EOF || PerlSIO_ungetc(c,stdio) != c) | |
06da4f11 NIS |
1932 | return EOF; |
1933 | return 0; | |
1934 | } | |
1935 | ||
1936 | IV | |
9e353e3b NIS |
1937 | PerlIOStdio_eof(PerlIO *f) |
1938 | { | |
adb71456 | 1939 | dTHX; |
eaf8b698 | 1940 | return PerlSIO_feof(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1941 | } |
1942 | ||
1943 | IV | |
1944 | PerlIOStdio_error(PerlIO *f) | |
1945 | { | |
adb71456 | 1946 | dTHX; |
eaf8b698 | 1947 | return PerlSIO_ferror(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1948 | } |
1949 | ||
1950 | void | |
1951 | PerlIOStdio_clearerr(PerlIO *f) | |
1952 | { | |
adb71456 | 1953 | dTHX; |
eaf8b698 | 1954 | PerlSIO_clearerr(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1955 | } |
1956 | ||
1957 | void | |
1958 | PerlIOStdio_setlinebuf(PerlIO *f) | |
1959 | { | |
adb71456 | 1960 | dTHX; |
9e353e3b | 1961 | #ifdef HAS_SETLINEBUF |
eaf8b698 | 1962 | PerlSIO_setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b | 1963 | #else |
eaf8b698 | 1964 | PerlSIO_setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0); |
9e353e3b NIS |
1965 | #endif |
1966 | } | |
1967 | ||
1968 | #ifdef FILE_base | |
1969 | STDCHAR * | |
1970 | PerlIOStdio_get_base(PerlIO *f) | |
1971 | { | |
adb71456 | 1972 | dTHX; |
9e353e3b | 1973 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1974 | return PerlSIO_get_base(stdio); |
9e353e3b NIS |
1975 | } |
1976 | ||
1977 | Size_t | |
1978 | PerlIOStdio_get_bufsiz(PerlIO *f) | |
1979 | { | |
adb71456 | 1980 | dTHX; |
9e353e3b | 1981 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1982 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
1983 | } |
1984 | #endif | |
1985 | ||
1986 | #ifdef USE_STDIO_PTR | |
1987 | STDCHAR * | |
1988 | PerlIOStdio_get_ptr(PerlIO *f) | |
1989 | { | |
adb71456 | 1990 | dTHX; |
9e353e3b | 1991 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 1992 | return PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
1993 | } |
1994 | ||
1995 | SSize_t | |
1996 | PerlIOStdio_get_cnt(PerlIO *f) | |
1997 | { | |
adb71456 | 1998 | dTHX; |
9e353e3b | 1999 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 2000 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
2001 | } |
2002 | ||
2003 | void | |
2004 | PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt) | |
2005 | { | |
adb71456 | 2006 | dTHX; |
9e353e3b NIS |
2007 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
2008 | if (ptr != NULL) | |
2009 | { | |
2010 | #ifdef STDIO_PTR_LVALUE | |
eaf8b698 | 2011 | PerlSIO_set_ptr(stdio,ptr); |
9e353e3b | 2012 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
eaf8b698 | 2013 | if (PerlSIO_get_cnt(stdio) != (cnt)) |
9e353e3b NIS |
2014 | { |
2015 | dTHX; | |
eaf8b698 | 2016 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
2017 | } |
2018 | #endif | |
2019 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
2020 | /* Setting ptr _does_ change cnt - we are done */ | |
2021 | return; | |
2022 | #endif | |
2023 | #else /* STDIO_PTR_LVALUE */ | |
eaf8b698 | 2024 | PerlProc_abort(); |
9e353e3b NIS |
2025 | #endif /* STDIO_PTR_LVALUE */ |
2026 | } | |
2027 | /* Now (or only) set cnt */ | |
2028 | #ifdef STDIO_CNT_LVALUE | |
eaf8b698 | 2029 | PerlSIO_set_cnt(stdio,cnt); |
9e353e3b NIS |
2030 | #else /* STDIO_CNT_LVALUE */ |
2031 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) | |
eaf8b698 | 2032 | PerlSIO_set_ptr(stdio,PerlSIO_get_ptr(stdio)+(PerlSIO_get_cnt(stdio)-cnt)); |
9e353e3b | 2033 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
eaf8b698 | 2034 | PerlProc_abort(); |
9e353e3b NIS |
2035 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
2036 | #endif /* STDIO_CNT_LVALUE */ | |
2037 | } | |
2038 | ||
2039 | #endif | |
2040 | ||
2041 | PerlIO_funcs PerlIO_stdio = { | |
2042 | "stdio", | |
2043 | sizeof(PerlIOStdio), | |
f5b9d040 | 2044 | PERLIO_K_BUFFERED, |
9e353e3b | 2045 | PerlIOStdio_fileno, |
9e353e3b | 2046 | PerlIOStdio_open, |
06da4f11 NIS |
2047 | PerlIOBase_pushed, |
2048 | PerlIOBase_noop_ok, | |
9e353e3b NIS |
2049 | PerlIOStdio_read, |
2050 | PerlIOStdio_unread, | |
2051 | PerlIOStdio_write, | |
2052 | PerlIOStdio_seek, | |
2053 | PerlIOStdio_tell, | |
2054 | PerlIOStdio_close, | |
2055 | PerlIOStdio_flush, | |
06da4f11 | 2056 | PerlIOStdio_fill, |
9e353e3b NIS |
2057 | PerlIOStdio_eof, |
2058 | PerlIOStdio_error, | |
2059 | PerlIOStdio_clearerr, | |
2060 | PerlIOStdio_setlinebuf, | |
2061 | #ifdef FILE_base | |
2062 | PerlIOStdio_get_base, | |
2063 | PerlIOStdio_get_bufsiz, | |
2064 | #else | |
2065 | NULL, | |
2066 | NULL, | |
2067 | #endif | |
2068 | #ifdef USE_STDIO_PTR | |
2069 | PerlIOStdio_get_ptr, | |
2070 | PerlIOStdio_get_cnt, | |
0eb1d8a4 | 2071 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) |
9e353e3b NIS |
2072 | PerlIOStdio_set_ptrcnt |
2073 | #else /* STDIO_PTR_LVALUE */ | |
2074 | NULL | |
2075 | #endif /* STDIO_PTR_LVALUE */ | |
2076 | #else /* USE_STDIO_PTR */ | |
2077 | NULL, | |
2078 | NULL, | |
2079 | NULL | |
2080 | #endif /* USE_STDIO_PTR */ | |
2081 | }; | |
2082 | ||
2083 | #undef PerlIO_exportFILE | |
2084 | FILE * | |
2085 | PerlIO_exportFILE(PerlIO *f, int fl) | |
2086 | { | |
f7e7eb72 | 2087 | FILE *stdio; |
9e353e3b | 2088 | PerlIO_flush(f); |
f7e7eb72 NIS |
2089 | stdio = fdopen(PerlIO_fileno(f),"r+"); |
2090 | if (stdio) | |
2091 | { | |
a999f61b NIS |
2092 | dTHX; |
2093 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ f,&PerlIO_stdio,"r+",Nullch,0),PerlIOStdio); | |
f7e7eb72 NIS |
2094 | s->stdio = stdio; |
2095 | } | |
2096 | return stdio; | |
9e353e3b NIS |
2097 | } |
2098 | ||
2099 | #undef PerlIO_findFILE | |
2100 | FILE * | |
2101 | PerlIO_findFILE(PerlIO *f) | |
2102 | { | |
f7e7eb72 NIS |
2103 | PerlIOl *l = *f; |
2104 | while (l) | |
2105 | { | |
2106 | if (l->tab == &PerlIO_stdio) | |
2107 | { | |
2108 | PerlIOStdio *s = PerlIOSelf(&l,PerlIOStdio); | |
2109 | return s->stdio; | |
2110 | } | |
2111 | l = *PerlIONext(&l); | |
2112 | } | |
9e353e3b NIS |
2113 | return PerlIO_exportFILE(f,0); |
2114 | } | |
2115 | ||
2116 | #undef PerlIO_releaseFILE | |
2117 | void | |
2118 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
2119 | { | |
2120 | } | |
2121 | ||
2122 | /*--------------------------------------------------------------------------------------*/ | |
2123 | /* perlio buffer layer */ | |
2124 | ||
5e2ab84b | 2125 | IV |
33af2bc7 | 2126 | PerlIOBuf_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len) |
5e2ab84b NIS |
2127 | { |
2128 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
1f474064 NIS |
2129 | int fd = PerlIO_fileno(f); |
2130 | Off_t posn; | |
2131 | if (fd >= 0 && PerlLIO_isatty(fd)) | |
2132 | { | |
2133 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
2134 | } | |
2135 | posn = PerlIO_tell(PerlIONext(f)); | |
2136 | if (posn != (Off_t) -1) | |
2137 | { | |
2138 | b->posn = posn; | |
2139 | } | |
33af2bc7 | 2140 | return PerlIOBase_pushed(f,mode,arg,len); |
5e2ab84b NIS |
2141 | } |
2142 | ||
9e353e3b | 2143 | PerlIO * |
ee518936 | 2144 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
9e353e3b | 2145 | { |
6f9d8c32 NIS |
2146 | if (f) |
2147 | { | |
ee518936 NIS |
2148 | PerlIO *next = PerlIONext(f); |
2149 | PerlIO_funcs *tab = PerlIOBase(next)->tab; | |
2150 | next = (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,next,narg,args); | |
2151 | if (!next || (*PerlIOBase(f)->tab->Pushed)(f,mode,Nullch,0) != 0) | |
c7fc522f | 2152 | { |
ee518936 | 2153 | return NULL; |
a4d3c1d3 | 2154 | } |
6f9d8c32 | 2155 | } |
ee518936 | 2156 | else |
9e353e3b | 2157 | { |
ee518936 NIS |
2158 | PerlIO_funcs *tab = PerlIO_default_btm(); |
2159 | int init = 0; | |
2160 | if (*mode == 'I') | |
2161 | { | |
2162 | init = 1; | |
2163 | mode++; | |
2164 | } | |
2165 | f = (*tab->Open)(aTHX_ tab,mode,fd,imode,perm,NULL,narg,args); | |
2166 | if (f) | |
2167 | { | |
a999f61b | 2168 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(aTHX_ f,self,mode,Nullch,0),PerlIOBuf); |
ee518936 NIS |
2169 | fd = PerlIO_fileno(f); |
2170 | #if O_BINARY != O_TEXT | |
2171 | /* do something about failing setmode()? --jhi */ | |
2172 | PerlLIO_setmode(fd , O_BINARY); | |
2173 | #endif | |
2174 | if (init && fd == 2) | |
2175 | { | |
2176 | /* Initial stderr is unbuffered */ | |
2177 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
2178 | } | |
2179 | } | |
9e353e3b NIS |
2180 | } |
2181 | return f; | |
2182 | } | |
2183 | ||
9e353e3b NIS |
2184 | /* This "flush" is akin to sfio's sync in that it handles files in either |
2185 | read or write state | |
2186 | */ | |
2187 | IV | |
2188 | PerlIOBuf_flush(PerlIO *f) | |
6f9d8c32 | 2189 | { |
9e353e3b NIS |
2190 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2191 | int code = 0; | |
2192 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
2193 | { | |
2194 | /* write() the buffer */ | |
a5262162 | 2195 | STDCHAR *buf = b->buf; |
33af2bc7 | 2196 | STDCHAR *p = buf; |
3789aae2 | 2197 | PerlIO *n = PerlIONext(f); |
9e353e3b NIS |
2198 | while (p < b->ptr) |
2199 | { | |
4b803d04 | 2200 | SSize_t count = PerlIO_write(n,p,b->ptr - p); |
9e353e3b NIS |
2201 | if (count > 0) |
2202 | { | |
2203 | p += count; | |
2204 | } | |
3789aae2 | 2205 | else if (count < 0 || PerlIO_error(n)) |
9e353e3b NIS |
2206 | { |
2207 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2208 | code = -1; | |
2209 | break; | |
2210 | } | |
2211 | } | |
33af2bc7 | 2212 | b->posn += (p - buf); |
9e353e3b NIS |
2213 | } |
2214 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
6f9d8c32 | 2215 | { |
33af2bc7 | 2216 | STDCHAR *buf = PerlIO_get_base(f); |
9e353e3b | 2217 | /* Note position change */ |
33af2bc7 | 2218 | b->posn += (b->ptr - buf); |
9e353e3b NIS |
2219 | if (b->ptr < b->end) |
2220 | { | |
2221 | /* We did not consume all of it */ | |
2222 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0) | |
2223 | { | |
2224 | b->posn = PerlIO_tell(PerlIONext(f)); | |
2225 | } | |
2226 | } | |
6f9d8c32 | 2227 | } |
9e353e3b NIS |
2228 | b->ptr = b->end = b->buf; |
2229 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); | |
88b61e10 | 2230 | /* FIXME: Is this right for read case ? */ |
9e353e3b NIS |
2231 | if (PerlIO_flush(PerlIONext(f)) != 0) |
2232 | code = -1; | |
2233 | return code; | |
6f9d8c32 NIS |
2234 | } |
2235 | ||
06da4f11 NIS |
2236 | IV |
2237 | PerlIOBuf_fill(PerlIO *f) | |
2238 | { | |
2239 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
88b61e10 | 2240 | PerlIO *n = PerlIONext(f); |
06da4f11 | 2241 | SSize_t avail; |
88b61e10 NIS |
2242 | /* FIXME: doing the down-stream flush is a bad idea if it causes |
2243 | pre-read data in stdio buffer to be discarded | |
2244 | but this is too simplistic - as it skips _our_ hosekeeping | |
2245 | and breaks tell tests. | |
2246 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) | |
2247 | { | |
2248 | } | |
2249 | */ | |
06da4f11 NIS |
2250 | if (PerlIO_flush(f) != 0) |
2251 | return -1; | |
88b61e10 | 2252 | |
a5262162 NIS |
2253 | if (!b->buf) |
2254 | PerlIO_get_base(f); /* allocate via vtable */ | |
2255 | ||
2256 | b->ptr = b->end = b->buf; | |
88b61e10 NIS |
2257 | if (PerlIO_fast_gets(n)) |
2258 | { | |
2259 | /* Layer below is also buffered | |
2260 | * We do _NOT_ want to call its ->Read() because that will loop | |
2261 | * till it gets what we asked for which may hang on a pipe etc. | |
2262 | * Instead take anything it has to hand, or ask it to fill _once_. | |
2263 | */ | |
2264 | avail = PerlIO_get_cnt(n); | |
2265 | if (avail <= 0) | |
2266 | { | |
2267 | avail = PerlIO_fill(n); | |
2268 | if (avail == 0) | |
2269 | avail = PerlIO_get_cnt(n); | |
2270 | else | |
2271 | { | |
2272 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
2273 | avail = 0; | |
2274 | } | |
2275 | } | |
2276 | if (avail > 0) | |
2277 | { | |
2278 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
2279 | SSize_t cnt = avail; | |
2280 | if (avail > b->bufsiz) | |
2281 | avail = b->bufsiz; | |
2282 | Copy(ptr,b->buf,avail,STDCHAR); | |
2283 | PerlIO_set_ptrcnt(n,ptr+avail,cnt-avail); | |
2284 | } | |
2285 | } | |
2286 | else | |
2287 | { | |
2288 | avail = PerlIO_read(n,b->ptr,b->bufsiz); | |
2289 | } | |
06da4f11 NIS |
2290 | if (avail <= 0) |
2291 | { | |
2292 | if (avail == 0) | |
2293 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
2294 | else | |
2295 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2296 | return -1; | |
2297 | } | |
a5262162 | 2298 | b->end = b->buf+avail; |
06da4f11 NIS |
2299 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
2300 | return 0; | |
2301 | } | |
2302 | ||
6f9d8c32 | 2303 | SSize_t |
9e353e3b | 2304 | PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 2305 | { |
99efab12 NIS |
2306 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2307 | STDCHAR *buf = (STDCHAR *) vbuf; | |
6f9d8c32 NIS |
2308 | if (f) |
2309 | { | |
9e353e3b | 2310 | if (!b->ptr) |
06da4f11 | 2311 | PerlIO_get_base(f); |
9e353e3b | 2312 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
f89522bf | 2313 | return 0; |
6f9d8c32 NIS |
2314 | while (count > 0) |
2315 | { | |
99efab12 | 2316 | SSize_t avail = PerlIO_get_cnt(f); |
60382766 | 2317 | SSize_t take = (count < avail) ? count : avail; |
99efab12 | 2318 | if (take > 0) |
6f9d8c32 | 2319 | { |
99efab12 NIS |
2320 | STDCHAR *ptr = PerlIO_get_ptr(f); |
2321 | Copy(ptr,buf,take,STDCHAR); | |
2322 | PerlIO_set_ptrcnt(f,ptr+take,(avail -= take)); | |
2323 | count -= take; | |
2324 | buf += take; | |
6f9d8c32 | 2325 | } |
99efab12 | 2326 | if (count > 0 && avail <= 0) |
6f9d8c32 | 2327 | { |
06da4f11 NIS |
2328 | if (PerlIO_fill(f) != 0) |
2329 | break; | |
6f9d8c32 NIS |
2330 | } |
2331 | } | |
99efab12 | 2332 | return (buf - (STDCHAR *) vbuf); |
6f9d8c32 NIS |
2333 | } |
2334 | return 0; | |
2335 | } | |
2336 | ||
9e353e3b NIS |
2337 | SSize_t |
2338 | PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 2339 | { |
9e353e3b NIS |
2340 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
2341 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2342 | SSize_t unread = 0; | |
2343 | SSize_t avail; | |
9e353e3b NIS |
2344 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
2345 | PerlIO_flush(f); | |
06da4f11 NIS |
2346 | if (!b->buf) |
2347 | PerlIO_get_base(f); | |
9e353e3b NIS |
2348 | if (b->buf) |
2349 | { | |
2350 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
2351 | { | |
2352 | avail = (b->ptr - b->buf); | |
9e353e3b NIS |
2353 | } |
2354 | else | |
2355 | { | |
2356 | avail = b->bufsiz; | |
5e2ab84b NIS |
2357 | b->end = b->buf + avail; |
2358 | b->ptr = b->end; | |
2359 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
2360 | b->posn -= b->bufsiz; | |
9e353e3b | 2361 | } |
5e2ab84b NIS |
2362 | if (avail > (SSize_t) count) |
2363 | avail = count; | |
9e353e3b NIS |
2364 | if (avail > 0) |
2365 | { | |
5e2ab84b | 2366 | b->ptr -= avail; |
9e353e3b NIS |
2367 | buf -= avail; |
2368 | if (buf != b->ptr) | |
2369 | { | |
88b61e10 | 2370 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b NIS |
2371 | } |
2372 | count -= avail; | |
2373 | unread += avail; | |
2374 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; | |
2375 | } | |
2376 | } | |
2377 | return unread; | |
760ac839 LW |
2378 | } |
2379 | ||
9e353e3b NIS |
2380 | SSize_t |
2381 | PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 2382 | { |
9e353e3b NIS |
2383 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2384 | const STDCHAR *buf = (const STDCHAR *) vbuf; | |
2385 | Size_t written = 0; | |
2386 | if (!b->buf) | |
06da4f11 | 2387 | PerlIO_get_base(f); |
9e353e3b NIS |
2388 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
2389 | return 0; | |
2390 | while (count > 0) | |
2391 | { | |
2392 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
2393 | if ((SSize_t) count < avail) | |
2394 | avail = count; | |
2395 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; | |
2396 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) | |
2397 | { | |
2398 | while (avail > 0) | |
2399 | { | |
2400 | int ch = *buf++; | |
2401 | *(b->ptr)++ = ch; | |
2402 | count--; | |
2403 | avail--; | |
2404 | written++; | |
2405 | if (ch == '\n') | |
2406 | { | |
2407 | PerlIO_flush(f); | |
2408 | break; | |
2409 | } | |
2410 | } | |
2411 | } | |
2412 | else | |
2413 | { | |
2414 | if (avail) | |
2415 | { | |
88b61e10 | 2416 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b NIS |
2417 | count -= avail; |
2418 | buf += avail; | |
2419 | written += avail; | |
2420 | b->ptr += avail; | |
2421 | } | |
2422 | } | |
2423 | if (b->ptr >= (b->buf + b->bufsiz)) | |
2424 | PerlIO_flush(f); | |
2425 | } | |
f5b9d040 NIS |
2426 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) |
2427 | PerlIO_flush(f); | |
9e353e3b NIS |
2428 | return written; |
2429 | } | |
2430 | ||
2431 | IV | |
2432 | PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence) | |
2433 | { | |
5e2ab84b NIS |
2434 | IV code; |
2435 | if ((code = PerlIO_flush(f)) == 0) | |
9e353e3b | 2436 | { |
5e2ab84b | 2437 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
9e353e3b NIS |
2438 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2439 | code = PerlIO_seek(PerlIONext(f),offset,whence); | |
2440 | if (code == 0) | |
2441 | { | |
2442 | b->posn = PerlIO_tell(PerlIONext(f)); | |
2443 | } | |
2444 | } | |
2445 | return code; | |
2446 | } | |
2447 | ||
2448 | Off_t | |
2449 | PerlIOBuf_tell(PerlIO *f) | |
2450 | { | |
2451 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2452 | Off_t posn = b->posn; | |
2453 | if (b->buf) | |
2454 | posn += (b->ptr - b->buf); | |
2455 | return posn; | |
2456 | } | |
2457 | ||
2458 | IV | |
2459 | PerlIOBuf_close(PerlIO *f) | |
2460 | { | |
5f1a76d0 | 2461 | dTHX; |
9e353e3b NIS |
2462 | IV code = PerlIOBase_close(f); |
2463 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2464 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) | |
6f9d8c32 | 2465 | { |
5f1a76d0 | 2466 | PerlMemShared_free(b->buf); |
6f9d8c32 | 2467 | } |
9e353e3b NIS |
2468 | b->buf = NULL; |
2469 | b->ptr = b->end = b->buf; | |
2470 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); | |
2471 | return code; | |
760ac839 LW |
2472 | } |
2473 | ||
760ac839 | 2474 | void |
9e353e3b | 2475 | PerlIOBuf_setlinebuf(PerlIO *f) |
760ac839 | 2476 | { |
6f9d8c32 NIS |
2477 | if (f) |
2478 | { | |
9e353e3b | 2479 | PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF; |
6f9d8c32 | 2480 | } |
760ac839 LW |
2481 | } |
2482 | ||
9e353e3b NIS |
2483 | STDCHAR * |
2484 | PerlIOBuf_get_ptr(PerlIO *f) | |
2485 | { | |
2486 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2487 | if (!b->buf) | |
06da4f11 | 2488 | PerlIO_get_base(f); |
9e353e3b NIS |
2489 | return b->ptr; |
2490 | } | |
2491 | ||
05d1247b | 2492 | SSize_t |
9e353e3b NIS |
2493 | PerlIOBuf_get_cnt(PerlIO *f) |
2494 | { | |
2495 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2496 | if (!b->buf) | |
06da4f11 | 2497 | PerlIO_get_base(f); |
9e353e3b NIS |
2498 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
2499 | return (b->end - b->ptr); | |
2500 | return 0; | |
2501 | } | |
2502 | ||
2503 | STDCHAR * | |
2504 | PerlIOBuf_get_base(PerlIO *f) | |
2505 | { | |
2506 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2507 | if (!b->buf) | |
06da4f11 | 2508 | { |
5f1a76d0 | 2509 | dTHX; |
06da4f11 NIS |
2510 | if (!b->bufsiz) |
2511 | b->bufsiz = 4096; | |
5f1a76d0 | 2512 | b->buf = PerlMemShared_calloc(b->bufsiz,sizeof(STDCHAR)); |
06da4f11 NIS |
2513 | if (!b->buf) |
2514 | { | |
2515 | b->buf = (STDCHAR *)&b->oneword; | |
2516 | b->bufsiz = sizeof(b->oneword); | |
2517 | } | |
2518 | b->ptr = b->buf; | |
2519 | b->end = b->ptr; | |
2520 | } | |
9e353e3b NIS |
2521 | return b->buf; |
2522 | } | |
2523 | ||
2524 | Size_t | |
2525 | PerlIOBuf_bufsiz(PerlIO *f) | |
2526 | { | |
2527 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2528 | if (!b->buf) | |
06da4f11 | 2529 | PerlIO_get_base(f); |
9e353e3b NIS |
2530 | return (b->end - b->buf); |
2531 | } | |
2532 | ||
2533 | void | |
05d1247b | 2534 | PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
9e353e3b NIS |
2535 | { |
2536 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2537 | if (!b->buf) | |
06da4f11 | 2538 | PerlIO_get_base(f); |
9e353e3b NIS |
2539 | b->ptr = ptr; |
2540 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) | |
6f9d8c32 | 2541 | { |
9e353e3b NIS |
2542 | dTHX; |
2543 | assert(PerlIO_get_cnt(f) == cnt); | |
2544 | assert(b->ptr >= b->buf); | |
6f9d8c32 | 2545 | } |
9e353e3b | 2546 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
2547 | } |
2548 | ||
9e353e3b NIS |
2549 | PerlIO_funcs PerlIO_perlio = { |
2550 | "perlio", | |
2551 | sizeof(PerlIOBuf), | |
f5b9d040 | 2552 | PERLIO_K_BUFFERED, |
9e353e3b | 2553 | PerlIOBase_fileno, |
9e353e3b | 2554 | PerlIOBuf_open, |
5e2ab84b | 2555 | PerlIOBuf_pushed, |
06da4f11 | 2556 | PerlIOBase_noop_ok, |
9e353e3b NIS |
2557 | PerlIOBuf_read, |
2558 | PerlIOBuf_unread, | |
2559 | PerlIOBuf_write, | |
2560 | PerlIOBuf_seek, | |
2561 | PerlIOBuf_tell, | |
2562 | PerlIOBuf_close, | |
2563 | PerlIOBuf_flush, | |
06da4f11 | 2564 | PerlIOBuf_fill, |
9e353e3b NIS |
2565 | PerlIOBase_eof, |
2566 | PerlIOBase_error, | |
2567 | PerlIOBase_clearerr, | |
2568 | PerlIOBuf_setlinebuf, | |
2569 | PerlIOBuf_get_base, | |
2570 | PerlIOBuf_bufsiz, | |
2571 | PerlIOBuf_get_ptr, | |
2572 | PerlIOBuf_get_cnt, | |
2573 | PerlIOBuf_set_ptrcnt, | |
2574 | }; | |
2575 | ||
66ecd56b | 2576 | /*--------------------------------------------------------------------------------------*/ |
5e2ab84b NIS |
2577 | /* Temp layer to hold unread chars when cannot do it any other way */ |
2578 | ||
2579 | IV | |
2580 | PerlIOPending_fill(PerlIO *f) | |
2581 | { | |
2582 | /* Should never happen */ | |
2583 | PerlIO_flush(f); | |
2584 | return 0; | |
2585 | } | |
2586 | ||
2587 | IV | |
2588 | PerlIOPending_close(PerlIO *f) | |
2589 | { | |
2590 | /* A tad tricky - flush pops us, then we close new top */ | |
2591 | PerlIO_flush(f); | |
2592 | return PerlIO_close(f); | |
2593 | } | |
2594 | ||
2595 | IV | |
2596 | PerlIOPending_seek(PerlIO *f, Off_t offset, int whence) | |
2597 | { | |
2598 | /* A tad tricky - flush pops us, then we seek new top */ | |
2599 | PerlIO_flush(f); | |
2600 | return PerlIO_seek(f,offset,whence); | |
2601 | } | |
2602 | ||
2603 | ||
2604 | IV | |
2605 | PerlIOPending_flush(PerlIO *f) | |
2606 | { | |
a999f61b | 2607 | dTHX; |
5e2ab84b NIS |
2608 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2609 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) | |
2610 | { | |
5f1a76d0 | 2611 | PerlMemShared_free(b->buf); |
5e2ab84b NIS |
2612 | b->buf = NULL; |
2613 | } | |
a999f61b | 2614 | PerlIO_pop(aTHX_ f); |
5e2ab84b NIS |
2615 | return 0; |
2616 | } | |
2617 | ||
2618 | void | |
2619 | PerlIOPending_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) | |
2620 | { | |
2621 | if (cnt <= 0) | |
2622 | { | |
2623 | PerlIO_flush(f); | |
2624 | } | |
2625 | else | |
2626 | { | |
2627 | PerlIOBuf_set_ptrcnt(f,ptr,cnt); | |
2628 | } | |
2629 | } | |
2630 | ||
2631 | IV | |
33af2bc7 | 2632 | PerlIOPending_pushed(PerlIO *f,const char *mode,const char *arg,STRLEN len) |
5e2ab84b | 2633 | { |
72e44f29 | 2634 | IV code = PerlIOBase_pushed(f,mode,arg,len); |
5e2ab84b NIS |
2635 | PerlIOl *l = PerlIOBase(f); |
2636 | /* Our PerlIO_fast_gets must match what we are pushed on, | |
2637 | or sv_gets() etc. get muddled when it changes mid-string | |
2638 | when we auto-pop. | |
2639 | */ | |
72e44f29 NIS |
2640 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS|PERLIO_F_UTF8)) | |
2641 | (PerlIOBase(PerlIONext(f))->flags & (PERLIO_F_FASTGETS|PERLIO_F_UTF8)); | |
5e2ab84b NIS |
2642 | return code; |
2643 | } | |
2644 | ||
2645 | SSize_t | |
2646 | PerlIOPending_read(PerlIO *f, void *vbuf, Size_t count) | |
2647 | { | |
2648 | SSize_t avail = PerlIO_get_cnt(f); | |
2649 | SSize_t got = 0; | |
2650 | if (count < avail) | |
2651 | avail = count; | |
2652 | if (avail > 0) | |
2653 | got = PerlIOBuf_read(f,vbuf,avail); | |
1f474064 NIS |
2654 | if (got >= 0 && got < count) |
2655 | { | |
2656 | SSize_t more = PerlIO_read(f,((STDCHAR *) vbuf)+got,count-got); | |
2657 | if (more >= 0 || got == 0) | |
2658 | got += more; | |
2659 | } | |
5e2ab84b NIS |
2660 | return got; |
2661 | } | |
2662 | ||
5e2ab84b NIS |
2663 | PerlIO_funcs PerlIO_pending = { |
2664 | "pending", | |
2665 | sizeof(PerlIOBuf), | |
2666 | PERLIO_K_BUFFERED, | |
2667 | PerlIOBase_fileno, | |
2668 | NULL, | |
5e2ab84b NIS |
2669 | PerlIOPending_pushed, |
2670 | PerlIOBase_noop_ok, | |
2671 | PerlIOPending_read, | |
2672 | PerlIOBuf_unread, | |
2673 | PerlIOBuf_write, | |
2674 | PerlIOPending_seek, | |
2675 | PerlIOBuf_tell, | |
2676 | PerlIOPending_close, | |
2677 | PerlIOPending_flush, | |
2678 | PerlIOPending_fill, | |
2679 | PerlIOBase_eof, | |
2680 | PerlIOBase_error, | |
2681 | PerlIOBase_clearerr, | |
2682 | PerlIOBuf_setlinebuf, | |
2683 | PerlIOBuf_get_base, | |
2684 | PerlIOBuf_bufsiz, | |
2685 | PerlIOBuf_get_ptr, | |
2686 | PerlIOBuf_get_cnt, | |
2687 | PerlIOPending_set_ptrcnt, | |
2688 | }; | |
2689 | ||
2690 | ||
2691 | ||
2692 | /*--------------------------------------------------------------------------------------*/ | |
99efab12 NIS |
2693 | /* crlf - translation |
2694 | On read translate CR,LF to "\n" we do this by overriding ptr/cnt entries | |
60382766 | 2695 | to hand back a line at a time and keeping a record of which nl we "lied" about. |
99efab12 | 2696 | On write translate "\n" to CR,LF |
66ecd56b NIS |
2697 | */ |
2698 | ||
99efab12 NIS |
2699 | typedef struct |
2700 | { | |
2701 | PerlIOBuf base; /* PerlIOBuf stuff */ | |
60382766 | 2702 | STDCHAR *nl; /* Position of crlf we "lied" about in the buffer */ |
99efab12 NIS |
2703 | } PerlIOCrlf; |
2704 | ||
f5b9d040 | 2705 | IV |
33af2bc7 | 2706 | PerlIOCrlf_pushed(PerlIO *f, const char *mode,const char *arg,STRLEN len) |
f5b9d040 NIS |
2707 | { |
2708 | IV code; | |
2709 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
33af2bc7 | 2710 | code = PerlIOBuf_pushed(f,mode,arg,len); |
5e2ab84b | 2711 | #if 0 |
4659c93f | 2712 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08"UVxf"\n", |
f5b9d040 | 2713 | f,PerlIOBase(f)->tab->name,(mode) ? mode : "(Null)", |
a4d3c1d3 | 2714 | PerlIOBase(f)->flags); |
5e2ab84b | 2715 | #endif |
f5b9d040 NIS |
2716 | return code; |
2717 | } | |
2718 | ||
2719 | ||
99efab12 NIS |
2720 | SSize_t |
2721 | PerlIOCrlf_unread(PerlIO *f, const void *vbuf, Size_t count) | |
2722 | { | |
60382766 | 2723 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
60382766 NIS |
2724 | if (c->nl) |
2725 | { | |
2726 | *(c->nl) = 0xd; | |
2727 | c->nl = NULL; | |
2728 | } | |
f5b9d040 NIS |
2729 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
2730 | return PerlIOBuf_unread(f,vbuf,count); | |
2731 | else | |
99efab12 | 2732 | { |
a4d3c1d3 | 2733 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
f5b9d040 NIS |
2734 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2735 | SSize_t unread = 0; | |
2736 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
2737 | PerlIO_flush(f); | |
2738 | if (!b->buf) | |
2739 | PerlIO_get_base(f); | |
2740 | if (b->buf) | |
99efab12 | 2741 | { |
f5b9d040 | 2742 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
99efab12 | 2743 | { |
f5b9d040 NIS |
2744 | b->end = b->ptr = b->buf + b->bufsiz; |
2745 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
5e2ab84b | 2746 | b->posn -= b->bufsiz; |
f5b9d040 NIS |
2747 | } |
2748 | while (count > 0 && b->ptr > b->buf) | |
2749 | { | |
2750 | int ch = *--buf; | |
2751 | if (ch == '\n') | |
99efab12 | 2752 | { |
f5b9d040 NIS |
2753 | if (b->ptr - 2 >= b->buf) |
2754 | { | |
2755 | *--(b->ptr) = 0xa; | |
2756 | *--(b->ptr) = 0xd; | |
2757 | unread++; | |
2758 | count--; | |
2759 | } | |
2760 | else | |
2761 | { | |
2762 | buf++; | |
2763 | break; | |
2764 | } | |
99efab12 NIS |
2765 | } |
2766 | else | |
2767 | { | |
f5b9d040 NIS |
2768 | *--(b->ptr) = ch; |
2769 | unread++; | |
2770 | count--; | |
99efab12 NIS |
2771 | } |
2772 | } | |
99efab12 | 2773 | } |
f5b9d040 | 2774 | return unread; |
99efab12 | 2775 | } |
99efab12 NIS |
2776 | } |
2777 | ||
2778 | SSize_t | |
2779 | PerlIOCrlf_get_cnt(PerlIO *f) | |
2780 | { | |
2781 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2782 | if (!b->buf) | |
2783 | PerlIO_get_base(f); | |
2784 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
2785 | { | |
2786 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); | |
f5b9d040 | 2787 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && !c->nl) |
99efab12 NIS |
2788 | { |
2789 | STDCHAR *nl = b->ptr; | |
60382766 | 2790 | scan: |
99efab12 NIS |
2791 | while (nl < b->end && *nl != 0xd) |
2792 | nl++; | |
2793 | if (nl < b->end && *nl == 0xd) | |
2794 | { | |
60382766 | 2795 | test: |
99efab12 NIS |
2796 | if (nl+1 < b->end) |
2797 | { | |
2798 | if (nl[1] == 0xa) | |
2799 | { | |
2800 | *nl = '\n'; | |
60382766 | 2801 | c->nl = nl; |
99efab12 | 2802 | } |
60382766 | 2803 | else |
99efab12 NIS |
2804 | { |
2805 | /* Not CR,LF but just CR */ | |
2806 | nl++; | |
60382766 | 2807 | goto scan; |
99efab12 NIS |
2808 | } |
2809 | } | |
2810 | else | |
2811 | { | |
60382766 | 2812 | /* Blast - found CR as last char in buffer */ |
99efab12 NIS |
2813 | if (b->ptr < nl) |
2814 | { | |
2815 | /* They may not care, defer work as long as possible */ | |
60382766 | 2816 | return (nl - b->ptr); |
99efab12 NIS |
2817 | } |
2818 | else | |
2819 | { | |
2820 | int code; | |
2821 | dTHX; | |
99efab12 NIS |
2822 | b->ptr++; /* say we have read it as far as flush() is concerned */ |
2823 | b->buf++; /* Leave space an front of buffer */ | |
2824 | b->bufsiz--; /* Buffer is thus smaller */ | |
2825 | code = PerlIO_fill(f); /* Fetch some more */ | |
2826 | b->bufsiz++; /* Restore size for next time */ | |
2827 | b->buf--; /* Point at space */ | |
2828 | b->ptr = nl = b->buf; /* Which is what we hand off */ | |
2829 | b->posn--; /* Buffer starts here */ | |
2830 | *nl = 0xd; /* Fill in the CR */ | |
60382766 | 2831 | if (code == 0) |
99efab12 NIS |
2832 | goto test; /* fill() call worked */ |
2833 | /* CR at EOF - just fall through */ | |
2834 | } | |
2835 | } | |
60382766 NIS |
2836 | } |
2837 | } | |
99efab12 NIS |
2838 | return (((c->nl) ? (c->nl+1) : b->end) - b->ptr); |
2839 | } | |
2840 | return 0; | |
2841 | } | |
2842 | ||
2843 | void | |
2844 | PerlIOCrlf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) | |
2845 | { | |
2846 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2847 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); | |
f5b9d040 | 2848 | IV flags = PerlIOBase(f)->flags; |
99efab12 NIS |
2849 | if (!b->buf) |
2850 | PerlIO_get_base(f); | |
2851 | if (!ptr) | |
60382766 | 2852 | { |
63dbdb06 NIS |
2853 | if (c->nl) |
2854 | ptr = c->nl+1; | |
2855 | else | |
2856 | { | |
2857 | ptr = b->end; | |
f5b9d040 | 2858 | if ((flags & PERLIO_F_CRLF) && ptr > b->buf && ptr[-1] == 0xd) |
63dbdb06 NIS |
2859 | ptr--; |
2860 | } | |
2861 | ptr -= cnt; | |
60382766 NIS |
2862 | } |
2863 | else | |
2864 | { | |
63dbdb06 NIS |
2865 | /* Test code - delete when it works ... */ |
2866 | STDCHAR *chk; | |
2867 | if (c->nl) | |
2868 | chk = c->nl+1; | |
2869 | else | |
2870 | { | |
2871 | chk = b->end; | |
f5b9d040 | 2872 | if ((flags & PERLIO_F_CRLF) && chk > b->buf && chk[-1] == 0xd) |
63dbdb06 NIS |
2873 | chk--; |
2874 | } | |
2875 | chk -= cnt; | |
a4d3c1d3 | 2876 | |
63dbdb06 NIS |
2877 | if (ptr != chk) |
2878 | { | |
2879 | dTHX; | |
4659c93f | 2880 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08"UVxf" nl=%p e=%p for %d", |
a4d3c1d3 | 2881 | ptr, chk, flags, c->nl, b->end, cnt); |
63dbdb06 | 2882 | } |
60382766 | 2883 | } |
99efab12 NIS |
2884 | if (c->nl) |
2885 | { | |
2886 | if (ptr > c->nl) | |
2887 | { | |
2888 | /* They have taken what we lied about */ | |
2889 | *(c->nl) = 0xd; | |
2890 | c->nl = NULL; | |
2891 | ptr++; | |
60382766 | 2892 | } |
99efab12 NIS |
2893 | } |
2894 | b->ptr = ptr; | |
2895 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
2896 | } | |
2897 | ||
2898 | SSize_t | |
2899 | PerlIOCrlf_write(PerlIO *f, const void *vbuf, Size_t count) | |
2900 | { | |
f5b9d040 NIS |
2901 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
2902 | return PerlIOBuf_write(f,vbuf,count); | |
2903 | else | |
99efab12 | 2904 | { |
a4d3c1d3 | 2905 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
f5b9d040 NIS |
2906 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
2907 | const STDCHAR *ebuf = buf+count; | |
2908 | if (!b->buf) | |
2909 | PerlIO_get_base(f); | |
2910 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
2911 | return 0; | |
2912 | while (buf < ebuf) | |
99efab12 | 2913 | { |
f5b9d040 NIS |
2914 | STDCHAR *eptr = b->buf+b->bufsiz; |
2915 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; | |
2916 | while (buf < ebuf && b->ptr < eptr) | |
99efab12 | 2917 | { |
f5b9d040 | 2918 | if (*buf == '\n') |
60382766 | 2919 | { |
f5b9d040 | 2920 | if ((b->ptr + 2) > eptr) |
60382766 | 2921 | { |
f5b9d040 | 2922 | /* Not room for both */ |
60382766 NIS |
2923 | PerlIO_flush(f); |
2924 | break; | |
2925 | } | |
f5b9d040 NIS |
2926 | else |
2927 | { | |
2928 | *(b->ptr)++ = 0xd; /* CR */ | |
2929 | *(b->ptr)++ = 0xa; /* LF */ | |
2930 | buf++; | |
2931 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) | |
2932 | { | |
2933 | PerlIO_flush(f); | |
2934 | break; | |
2935 | } | |
2936 | } | |
2937 | } | |
2938 | else | |
2939 | { | |
2940 | int ch = *buf++; | |
2941 | *(b->ptr)++ = ch; | |
2942 | } | |
2943 | if (b->ptr >= eptr) | |
2944 | { | |
2945 | PerlIO_flush(f); | |
2946 | break; | |
99efab12 | 2947 | } |
99efab12 NIS |
2948 | } |
2949 | } | |
f5b9d040 NIS |
2950 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) |
2951 | PerlIO_flush(f); | |
2952 | return (buf - (STDCHAR *) vbuf); | |
99efab12 | 2953 | } |
99efab12 NIS |
2954 | } |
2955 | ||
2956 | IV | |
2957 | PerlIOCrlf_flush(PerlIO *f) | |
2958 | { | |
2959 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); | |
2960 | if (c->nl) | |
2961 | { | |
99efab12 | 2962 | *(c->nl) = 0xd; |
60382766 | 2963 | c->nl = NULL; |
99efab12 NIS |
2964 | } |
2965 | return PerlIOBuf_flush(f); | |
2966 | } | |
2967 | ||
66ecd56b NIS |
2968 | PerlIO_funcs PerlIO_crlf = { |
2969 | "crlf", | |
99efab12 | 2970 | sizeof(PerlIOCrlf), |
f5b9d040 | 2971 | PERLIO_K_BUFFERED|PERLIO_K_CANCRLF, |
66ecd56b | 2972 | PerlIOBase_fileno, |
66ecd56b | 2973 | PerlIOBuf_open, |
f5b9d040 | 2974 | PerlIOCrlf_pushed, |
99efab12 NIS |
2975 | PerlIOBase_noop_ok, /* popped */ |
2976 | PerlIOBuf_read, /* generic read works with ptr/cnt lies ... */ | |
2977 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ | |
2978 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
66ecd56b NIS |
2979 | PerlIOBuf_seek, |
2980 | PerlIOBuf_tell, | |
2981 | PerlIOBuf_close, | |
99efab12 | 2982 | PerlIOCrlf_flush, |
66ecd56b NIS |
2983 | PerlIOBuf_fill, |
2984 | PerlIOBase_eof, | |
2985 | PerlIOBase_error, | |
2986 | PerlIOBase_clearerr, | |
2987 | PerlIOBuf_setlinebuf, | |
2988 | PerlIOBuf_get_base, | |
2989 | PerlIOBuf_bufsiz, | |
2990 | PerlIOBuf_get_ptr, | |
99efab12 NIS |
2991 | PerlIOCrlf_get_cnt, |
2992 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
2993 | }; |
2994 | ||
06da4f11 NIS |
2995 | #ifdef HAS_MMAP |
2996 | /*--------------------------------------------------------------------------------------*/ | |
2997 | /* mmap as "buffer" layer */ | |
2998 | ||
2999 | typedef struct | |
3000 | { | |
3001 | PerlIOBuf base; /* PerlIOBuf stuff */ | |
c3d7c7c9 | 3002 | Mmap_t mptr; /* Mapped address */ |
06da4f11 NIS |
3003 | Size_t len; /* mapped length */ |
3004 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
3005 | } PerlIOMmap; | |
3006 | ||
c3d7c7c9 NIS |
3007 | static size_t page_size = 0; |
3008 | ||
06da4f11 NIS |
3009 | IV |
3010 | PerlIOMmap_map(PerlIO *f) | |
3011 | { | |
68d873c6 | 3012 | dTHX; |
06da4f11 NIS |
3013 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
3014 | PerlIOBuf *b = &m->base; | |
3015 | IV flags = PerlIOBase(f)->flags; | |
3016 | IV code = 0; | |
3017 | if (m->len) | |
3018 | abort(); | |
3019 | if (flags & PERLIO_F_CANREAD) | |
3020 | { | |
3021 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
3022 | int fd = PerlIO_fileno(f); | |
3023 | struct stat st; | |
3024 | code = fstat(fd,&st); | |
3025 | if (code == 0 && S_ISREG(st.st_mode)) | |
3026 | { | |
3027 | SSize_t len = st.st_size - b->posn; | |
3028 | if (len > 0) | |
3029 | { | |
c3d7c7c9 | 3030 | Off_t posn; |
68d873c6 JH |
3031 | if (!page_size) { |
3032 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE)) | |
3033 | { | |
3034 | SETERRNO(0,SS$_NORMAL); | |
3035 | # ifdef _SC_PAGESIZE | |
3036 | page_size = sysconf(_SC_PAGESIZE); | |
3037 | # else | |
3038 | page_size = sysconf(_SC_PAGE_SIZE); | |
14aaf8e8 | 3039 | # endif |
68d873c6 JH |
3040 | if ((long)page_size < 0) { |
3041 | if (errno) { | |
3042 | SV *error = ERRSV; | |
3043 | char *msg; | |
3044 | STRLEN n_a; | |
3045 | (void)SvUPGRADE(error, SVt_PV); | |
3046 | msg = SvPVx(error, n_a); | |
14aaf8e8 | 3047 | Perl_croak(aTHX_ "panic: sysconf: %s", msg); |
68d873c6 JH |
3048 | } |
3049 | else | |
14aaf8e8 | 3050 | Perl_croak(aTHX_ "panic: sysconf: pagesize unknown"); |
68d873c6 JH |
3051 | } |
3052 | } | |
3053 | #else | |
3054 | # ifdef HAS_GETPAGESIZE | |
c3d7c7c9 | 3055 | page_size = getpagesize(); |
68d873c6 JH |
3056 | # else |
3057 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) | |
3058 | page_size = PAGESIZE; /* compiletime, bad */ | |
3059 | # endif | |
3060 | # endif | |
3061 | #endif | |
3062 | if ((IV)page_size <= 0) | |
14aaf8e8 | 3063 | Perl_croak(aTHX_ "panic: bad pagesize %"IVdf, (IV)page_size); |
68d873c6 | 3064 | } |
c3d7c7c9 NIS |
3065 | if (b->posn < 0) |
3066 | { | |
3067 | /* This is a hack - should never happen - open should have set it ! */ | |
3068 | b->posn = PerlIO_tell(PerlIONext(f)); | |
3069 | } | |
3070 | posn = (b->posn / page_size) * page_size; | |
3071 | len = st.st_size - posn; | |
a5262162 | 3072 | m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
c3d7c7c9 | 3073 | if (m->mptr && m->mptr != (Mmap_t) -1) |
06da4f11 | 3074 | { |
a5262162 | 3075 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
c3d7c7c9 | 3076 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 3077 | #endif |
a5262162 NIS |
3078 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
3079 | madvise(m->mptr, len, MADV_WILLNEED); | |
3080 | #endif | |
c3d7c7c9 NIS |
3081 | PerlIOBase(f)->flags = (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; |
3082 | b->end = ((STDCHAR *)m->mptr) + len; | |
3083 | b->buf = ((STDCHAR *)m->mptr) + (b->posn - posn); | |
3084 | b->ptr = b->buf; | |
3085 | m->len = len; | |
06da4f11 NIS |
3086 | } |
3087 | else | |
3088 | { | |
3089 | b->buf = NULL; | |
3090 | } | |
3091 | } | |
3092 | else | |
3093 | { | |
3094 | PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
3095 | b->buf = NULL; | |
3096 | b->ptr = b->end = b->ptr; | |
3097 | code = -1; | |
3098 | } | |
3099 | } | |
3100 | } | |
3101 | return code; | |
3102 | } | |
3103 | ||
3104 | IV | |
3105 | PerlIOMmap_unmap(PerlIO *f) | |
3106 | { | |
3107 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3108 | PerlIOBuf *b = &m->base; | |
3109 | IV code = 0; | |
3110 | if (m->len) | |
3111 | { | |
3112 | if (b->buf) | |
3113 | { | |
c3d7c7c9 NIS |
3114 | code = munmap(m->mptr, m->len); |
3115 | b->buf = NULL; | |
3116 | m->len = 0; | |
3117 | m->mptr = NULL; | |
06da4f11 NIS |
3118 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0) |
3119 | code = -1; | |
06da4f11 NIS |
3120 | } |
3121 | b->ptr = b->end = b->buf; | |
3122 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); | |
3123 | } | |
3124 | return code; | |
3125 | } | |
3126 | ||
3127 | STDCHAR * | |
3128 | PerlIOMmap_get_base(PerlIO *f) | |
3129 | { | |
3130 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3131 | PerlIOBuf *b = &m->base; | |
3132 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) | |
3133 | { | |
3134 | /* Already have a readbuffer in progress */ | |
3135 | return b->buf; | |
3136 | } | |
3137 | if (b->buf) | |
3138 | { | |
3139 | /* We have a write buffer or flushed PerlIOBuf read buffer */ | |
3140 | m->bbuf = b->buf; /* save it in case we need it again */ | |
3141 | b->buf = NULL; /* Clear to trigger below */ | |
3142 | } | |
3143 | if (!b->buf) | |
3144 | { | |
3145 | PerlIOMmap_map(f); /* Try and map it */ | |
3146 | if (!b->buf) | |
3147 | { | |
3148 | /* Map did not work - recover PerlIOBuf buffer if we have one */ | |
3149 | b->buf = m->bbuf; | |
3150 | } | |
3151 | } | |
3152 | b->ptr = b->end = b->buf; | |
3153 | if (b->buf) | |
3154 | return b->buf; | |
3155 | return PerlIOBuf_get_base(f); | |
3156 | } | |
3157 | ||
3158 | SSize_t | |
3159 | PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count) | |
3160 | { | |
3161 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3162 | PerlIOBuf *b = &m->base; | |
3163 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3164 | PerlIO_flush(f); | |
3165 | if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count)) | |
3166 | { | |
3167 | b->ptr -= count; | |
3168 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; | |
3169 | return count; | |
3170 | } | |
3171 | if (m->len) | |
3172 | { | |
4a4a6116 | 3173 | /* Loose the unwritable mapped buffer */ |
06da4f11 | 3174 | PerlIO_flush(f); |
c3d7c7c9 NIS |
3175 | /* If flush took the "buffer" see if we have one from before */ |
3176 | if (!b->buf && m->bbuf) | |
3177 | b->buf = m->bbuf; | |
3178 | if (!b->buf) | |
3179 | { | |
3180 | PerlIOBuf_get_base(f); | |
3181 | m->bbuf = b->buf; | |
3182 | } | |
06da4f11 | 3183 | } |
5e2ab84b | 3184 | return PerlIOBuf_unread(f,vbuf,count); |
06da4f11 NIS |
3185 | } |
3186 | ||
3187 | SSize_t | |
3188 | PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count) | |
3189 | { | |
3190 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3191 | PerlIOBuf *b = &m->base; | |
3192 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) | |
3193 | { | |
3194 | /* No, or wrong sort of, buffer */ | |
3195 | if (m->len) | |
3196 | { | |
3197 | if (PerlIOMmap_unmap(f) != 0) | |
3198 | return 0; | |
3199 | } | |
3200 | /* If unmap took the "buffer" see if we have one from before */ | |
3201 | if (!b->buf && m->bbuf) | |
3202 | b->buf = m->bbuf; | |
3203 | if (!b->buf) | |
3204 | { | |
3205 | PerlIOBuf_get_base(f); | |
3206 | m->bbuf = b->buf; | |
3207 | } | |
3208 | } | |
3209 | return PerlIOBuf_write(f,vbuf,count); | |
3210 | } | |
3211 | ||
3212 | IV | |
3213 | PerlIOMmap_flush(PerlIO *f) | |
3214 | { | |
3215 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3216 | PerlIOBuf *b = &m->base; | |
3217 | IV code = PerlIOBuf_flush(f); | |
3218 | /* Now we are "synced" at PerlIOBuf level */ | |
3219 | if (b->buf) | |
3220 | { | |
3221 | if (m->len) | |
3222 | { | |
3223 | /* Unmap the buffer */ | |
3224 | if (PerlIOMmap_unmap(f) != 0) | |
3225 | code = -1; | |
3226 | } | |
3227 | else | |
3228 | { | |
3229 | /* We seem to have a PerlIOBuf buffer which was not mapped | |
3230 | * remember it in case we need one later | |
3231 | */ | |
3232 | m->bbuf = b->buf; | |
3233 | } | |
3234 | } | |
06da4f11 NIS |
3235 | return code; |
3236 | } | |
3237 | ||
3238 | IV | |
3239 | PerlIOMmap_fill(PerlIO *f) | |
3240 | { | |
3241 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
3242 | IV code = PerlIO_flush(f); | |
06da4f11 NIS |
3243 | if (code == 0 && !b->buf) |
3244 | { | |
3245 | code = PerlIOMmap_map(f); | |
06da4f11 NIS |
3246 | } |
3247 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) | |
3248 | { | |
3249 | code = PerlIOBuf_fill(f); | |
06da4f11 NIS |
3250 | } |
3251 | return code; | |
3252 | } | |
3253 | ||
3254 | IV | |
3255 | PerlIOMmap_close(PerlIO *f) | |
3256 | { | |
3257 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3258 | PerlIOBuf *b = &m->base; | |
3259 | IV code = PerlIO_flush(f); | |
3260 | if (m->bbuf) | |
3261 | { | |
3262 | b->buf = m->bbuf; | |
3263 | m->bbuf = NULL; | |
3264 | b->ptr = b->end = b->buf; | |
3265 | } | |
3266 | if (PerlIOBuf_close(f) != 0) | |
3267 | code = -1; | |
06da4f11 NIS |
3268 | return code; |
3269 | } | |
3270 | ||
3271 | ||
3272 | PerlIO_funcs PerlIO_mmap = { | |
3273 | "mmap", | |
3274 | sizeof(PerlIOMmap), | |
f5b9d040 | 3275 | PERLIO_K_BUFFERED, |
06da4f11 | 3276 | PerlIOBase_fileno, |
06da4f11 | 3277 | PerlIOBuf_open, |
5e2ab84b | 3278 | PerlIOBuf_pushed, |
06da4f11 NIS |
3279 | PerlIOBase_noop_ok, |
3280 | PerlIOBuf_read, | |
3281 | PerlIOMmap_unread, | |
3282 | PerlIOMmap_write, | |
3283 | PerlIOBuf_seek, | |
3284 | PerlIOBuf_tell, | |
3285 | PerlIOBuf_close, | |
3286 | PerlIOMmap_flush, | |
3287 | PerlIOMmap_fill, | |
3288 | PerlIOBase_eof, | |
3289 | PerlIOBase_error, | |
3290 | PerlIOBase_clearerr, | |
3291 | PerlIOBuf_setlinebuf, | |
3292 | PerlIOMmap_get_base, | |
3293 | PerlIOBuf_bufsiz, | |
3294 | PerlIOBuf_get_ptr, | |
3295 | PerlIOBuf_get_cnt, | |
3296 | PerlIOBuf_set_ptrcnt, | |
3297 | }; | |
3298 | ||
3299 | #endif /* HAS_MMAP */ | |
3300 | ||
9e353e3b NIS |
3301 | void |
3302 | PerlIO_init(void) | |
760ac839 | 3303 | { |
9e353e3b | 3304 | if (!_perlio) |
6f9d8c32 | 3305 | { |
be696b0a | 3306 | #ifndef WIN32 |
9e353e3b | 3307 | atexit(&PerlIO_cleanup); |
be696b0a | 3308 | #endif |
6f9d8c32 | 3309 | } |
760ac839 LW |
3310 | } |
3311 | ||
9e353e3b NIS |
3312 | #undef PerlIO_stdin |
3313 | PerlIO * | |
3314 | PerlIO_stdin(void) | |
3315 | { | |
3316 | if (!_perlio) | |
1141d9f8 NIS |
3317 | { |
3318 | dTHX; | |
3319 | PerlIO_stdstreams(aTHX); | |
3320 | } | |
05d1247b | 3321 | return &_perlio[1]; |
9e353e3b NIS |
3322 | } |
3323 | ||
3324 | #undef PerlIO_stdout | |
3325 | PerlIO * | |
3326 | PerlIO_stdout(void) | |
3327 | { | |
3328 | if (!_perlio) | |
1141d9f8 NIS |
3329 | { |
3330 | dTHX; | |
3331 | PerlIO_stdstreams(aTHX); | |
3332 | } | |
05d1247b | 3333 | return &_perlio[2]; |
9e353e3b NIS |
3334 | } |
3335 | ||
3336 | #undef PerlIO_stderr | |
3337 | PerlIO * | |
3338 | PerlIO_stderr(void) | |
3339 | { | |
3340 | if (!_perlio) | |
1141d9f8 NIS |
3341 | { |
3342 | dTHX; | |
3343 | PerlIO_stdstreams(aTHX); | |
3344 | } | |
05d1247b | 3345 | return &_perlio[3]; |
9e353e3b NIS |
3346 | } |
3347 | ||
3348 | /*--------------------------------------------------------------------------------------*/ | |
3349 | ||
3350 | #undef PerlIO_getname | |
3351 | char * | |
3352 | PerlIO_getname(PerlIO *f, char *buf) | |
3353 | { | |
3354 | dTHX; | |
3355 | Perl_croak(aTHX_ "Don't know how to get file name"); | |
3356 | return NULL; | |
3357 | } | |
3358 | ||
3359 | ||
3360 | /*--------------------------------------------------------------------------------------*/ | |
3361 | /* Functions which can be called on any kind of PerlIO implemented | |
3362 | in terms of above | |
3363 | */ | |
3364 | ||
3365 | #undef PerlIO_getc | |
6f9d8c32 | 3366 | int |
9e353e3b | 3367 | PerlIO_getc(PerlIO *f) |
760ac839 | 3368 | { |
313ca112 NIS |
3369 | STDCHAR buf[1]; |
3370 | SSize_t count = PerlIO_read(f,buf,1); | |
9e353e3b | 3371 | if (count == 1) |
313ca112 NIS |
3372 | { |
3373 | return (unsigned char) buf[0]; | |
3374 | } | |
3375 | return EOF; | |
3376 | } | |
3377 | ||
3378 | #undef PerlIO_ungetc | |
3379 | int | |
3380 | PerlIO_ungetc(PerlIO *f, int ch) | |
3381 | { | |
3382 | if (ch != EOF) | |
3383 | { | |
3384 | STDCHAR buf = ch; | |
3385 | if (PerlIO_unread(f,&buf,1) == 1) | |
3386 | return ch; | |
3387 | } | |
3388 | return EOF; | |
760ac839 LW |
3389 | } |
3390 | ||
9e353e3b NIS |
3391 | #undef PerlIO_putc |
3392 | int | |
3393 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 3394 | { |
9e353e3b NIS |
3395 | STDCHAR buf = ch; |
3396 | return PerlIO_write(f,&buf,1); | |
760ac839 LW |
3397 | } |
3398 | ||
9e353e3b | 3399 | #undef PerlIO_puts |
760ac839 | 3400 | int |
9e353e3b | 3401 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 3402 | { |
9e353e3b NIS |
3403 | STRLEN len = strlen(s); |
3404 | return PerlIO_write(f,s,len); | |
760ac839 LW |
3405 | } |
3406 | ||
3407 | #undef PerlIO_rewind | |
3408 | void | |
c78749f2 | 3409 | PerlIO_rewind(PerlIO *f) |
760ac839 | 3410 | { |
6f9d8c32 | 3411 | PerlIO_seek(f,(Off_t)0,SEEK_SET); |
9e353e3b | 3412 | PerlIO_clearerr(f); |
6f9d8c32 NIS |
3413 | } |
3414 | ||
3415 | #undef PerlIO_vprintf | |
3416 | int | |
3417 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
3418 | { | |
3419 | dTHX; | |
bb9950b7 | 3420 | SV *sv = newSVpvn("",0); |
6f9d8c32 NIS |
3421 | char *s; |
3422 | STRLEN len; | |
933fb4e4 | 3423 | SSize_t wrote; |
2cc61e15 DD |
3424 | #ifdef NEED_VA_COPY |
3425 | va_list apc; | |
3426 | Perl_va_copy(ap, apc); | |
3427 | sv_vcatpvf(sv, fmt, &apc); | |
3428 | #else | |
6f9d8c32 | 3429 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 | 3430 | #endif |
6f9d8c32 | 3431 | s = SvPV(sv,len); |
933fb4e4 BS |
3432 | wrote = PerlIO_write(f,s,len); |
3433 | SvREFCNT_dec(sv); | |
3434 | return wrote; | |
760ac839 LW |
3435 | } |
3436 | ||
3437 | #undef PerlIO_printf | |
6f9d8c32 | 3438 | int |
760ac839 | 3439 | PerlIO_printf(PerlIO *f,const char *fmt,...) |
760ac839 LW |
3440 | { |
3441 | va_list ap; | |
3442 | int result; | |
760ac839 | 3443 | va_start(ap,fmt); |
6f9d8c32 | 3444 | result = PerlIO_vprintf(f,fmt,ap); |
760ac839 LW |
3445 | va_end(ap); |
3446 | return result; | |
3447 | } | |
3448 | ||
3449 | #undef PerlIO_stdoutf | |
6f9d8c32 | 3450 | int |
760ac839 | 3451 | PerlIO_stdoutf(const char *fmt,...) |
760ac839 LW |
3452 | { |
3453 | va_list ap; | |
3454 | int result; | |
760ac839 | 3455 | va_start(ap,fmt); |
760ac839 LW |
3456 | result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); |
3457 | va_end(ap); | |
3458 | return result; | |
3459 | } | |
3460 | ||
3461 | #undef PerlIO_tmpfile | |
3462 | PerlIO * | |
c78749f2 | 3463 | PerlIO_tmpfile(void) |
760ac839 | 3464 | { |
b1ef6e3b | 3465 | /* I have no idea how portable mkstemp() is ... */ |
83b075c3 | 3466 | #if defined(WIN32) || !defined(HAVE_MKSTEMP) |
adb71456 | 3467 | dTHX; |
83b075c3 | 3468 | PerlIO *f = NULL; |
eaf8b698 | 3469 | FILE *stdio = PerlSIO_tmpfile(); |
83b075c3 NIS |
3470 | if (stdio) |
3471 | { | |
a999f61b | 3472 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),&PerlIO_stdio,"w+",Nullch,0),PerlIOStdio); |
83b075c3 NIS |
3473 | s->stdio = stdio; |
3474 | } | |
3475 | return f; | |
3476 | #else | |
3477 | dTHX; | |
6f9d8c32 NIS |
3478 | SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0); |
3479 | int fd = mkstemp(SvPVX(sv)); | |
3480 | PerlIO *f = NULL; | |
3481 | if (fd >= 0) | |
3482 | { | |
b1ef6e3b | 3483 | f = PerlIO_fdopen(fd,"w+"); |
6f9d8c32 NIS |
3484 | if (f) |
3485 | { | |
9e353e3b | 3486 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; |
6f9d8c32 | 3487 | } |
00b02797 | 3488 | PerlLIO_unlink(SvPVX(sv)); |
6f9d8c32 NIS |
3489 | SvREFCNT_dec(sv); |
3490 | } | |
3491 | return f; | |
83b075c3 | 3492 | #endif |
760ac839 LW |
3493 | } |
3494 | ||
6f9d8c32 NIS |
3495 | #undef HAS_FSETPOS |
3496 | #undef HAS_FGETPOS | |
3497 | ||
760ac839 LW |
3498 | #endif /* USE_SFIO */ |
3499 | #endif /* PERLIO_IS_STDIO */ | |
3500 | ||
9e353e3b NIS |
3501 | /*======================================================================================*/ |
3502 | /* Now some functions in terms of above which may be needed even if | |
3503 | we are not in true PerlIO mode | |
3504 | */ | |
3505 | ||
760ac839 LW |
3506 | #ifndef HAS_FSETPOS |
3507 | #undef PerlIO_setpos | |
3508 | int | |
766a733e | 3509 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 3510 | { |
766a733e NIS |
3511 | dTHX; |
3512 | if (SvOK(pos)) | |
3513 | { | |
3514 | STRLEN len; | |
3515 | Off_t *posn = (Off_t *) SvPV(pos,len); | |
3516 | if (f && len == sizeof(Off_t)) | |
3517 | return PerlIO_seek(f,*posn,SEEK_SET); | |
3518 | } | |
3519 | errno = EINVAL; | |
3520 | return -1; | |
760ac839 | 3521 | } |
c411622e | 3522 | #else |
c411622e | 3523 | #undef PerlIO_setpos |
3524 | int | |
766a733e | 3525 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 3526 | { |
766a733e NIS |
3527 | dTHX; |
3528 | if (SvOK(pos)) | |
3529 | { | |
3530 | STRLEN len; | |
3531 | Fpos_t *fpos = (Fpos_t *) SvPV(pos,len); | |
3532 | if (f && len == sizeof(Fpos_t)) | |
3533 | { | |
2d4389e4 | 3534 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
766a733e | 3535 | return fsetpos64(f, fpos); |
d9b3e12d | 3536 | #else |
766a733e | 3537 | return fsetpos(f, fpos); |
d9b3e12d | 3538 | #endif |
766a733e NIS |
3539 | } |
3540 | } | |
3541 | errno = EINVAL; | |
3542 | return -1; | |
c411622e | 3543 | } |
3544 | #endif | |
760ac839 LW |
3545 | |
3546 | #ifndef HAS_FGETPOS | |
3547 | #undef PerlIO_getpos | |
3548 | int | |
766a733e | 3549 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 3550 | { |
766a733e NIS |
3551 | dTHX; |
3552 | Off_t posn = PerlIO_tell(f); | |
3553 | sv_setpvn(pos,(char *)&posn,sizeof(posn)); | |
3554 | return (posn == (Off_t)-1) ? -1 : 0; | |
760ac839 | 3555 | } |
c411622e | 3556 | #else |
c411622e | 3557 | #undef PerlIO_getpos |
3558 | int | |
766a733e | 3559 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 3560 | { |
766a733e NIS |
3561 | dTHX; |
3562 | Fpos_t fpos; | |
3563 | int code; | |
2d4389e4 | 3564 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
766a733e | 3565 | code = fgetpos64(f, &fpos); |
d9b3e12d | 3566 | #else |
766a733e | 3567 | code = fgetpos(f, &fpos); |
d9b3e12d | 3568 | #endif |
766a733e NIS |
3569 | sv_setpvn(pos,(char *)&fpos,sizeof(fpos)); |
3570 | return code; | |
c411622e | 3571 | } |
3572 | #endif | |
760ac839 LW |
3573 | |
3574 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
3575 | ||
3576 | int | |
c78749f2 | 3577 | vprintf(char *pat, char *args) |
662a7e3f CS |
3578 | { |
3579 | _doprnt(pat, args, stdout); | |
3580 | return 0; /* wrong, but perl doesn't use the return value */ | |
3581 | } | |
3582 | ||
3583 | int | |
c78749f2 | 3584 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
3585 | { |
3586 | _doprnt(pat, args, fd); | |
3587 | return 0; /* wrong, but perl doesn't use the return value */ | |
3588 | } | |
3589 | ||
3590 | #endif | |
3591 | ||
3592 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 3593 | int |
8ac85365 | 3594 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 LW |
3595 | { |
3596 | int val = vsprintf(s, fmt, ap); | |
3597 | if (n >= 0) | |
3598 | { | |
8c86a920 | 3599 | if (strlen(s) >= (STRLEN)n) |
760ac839 | 3600 | { |
bf49b057 | 3601 | dTHX; |
fb4a9925 JH |
3602 | (void)PerlIO_puts(Perl_error_log, |
3603 | "panic: sprintf overflow - memory corrupted!\n"); | |
bf49b057 | 3604 | my_exit(1); |
760ac839 LW |
3605 | } |
3606 | } | |
3607 | return val; | |
3608 | } | |
3609 | #endif | |
3610 | ||
3611 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 3612 | int |
760ac839 | 3613 | PerlIO_sprintf(char *s, int n, const char *fmt,...) |
760ac839 LW |
3614 | { |
3615 | va_list ap; | |
3616 | int result; | |
760ac839 | 3617 | va_start(ap,fmt); |
760ac839 LW |
3618 | result = PerlIO_vsprintf(s, n, fmt, ap); |
3619 | va_end(ap); | |
3620 | return result; | |
3621 | } | |
3622 | #endif | |
3623 | ||
c5be433b | 3624 |