Commit | Line | Data |
760ac839 |
1 | /* perlio.c |
2 | * |
1761cee5 |
3 | * Copyright (c) 1996-2000, Nick Ing-Simmons |
760ac839 |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
8 | */ |
9 | |
10 | #define VOIDUSED 1 |
12ae5dfc |
11 | #ifdef PERL_MICRO |
12 | # include "uconfig.h" |
13 | #else |
14 | # include "config.h" |
15 | #endif |
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16 | |
6f9d8c32 |
17 | #define PERLIO_NOT_STDIO 0 |
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18 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
6f9d8c32 |
19 | /* #define PerlIO FILE */ |
760ac839 |
20 | #endif |
21 | /* |
6f9d8c32 |
22 | * This file provides those parts of PerlIO abstraction |
88b61e10 |
23 | * which are not #defined in perlio.h. |
6f9d8c32 |
24 | * Which these are depends on various Configure #ifdef's |
760ac839 |
25 | */ |
26 | |
27 | #include "EXTERN.h" |
864dbfa3 |
28 | #define PERL_IN_PERLIO_C |
760ac839 |
29 | #include "perl.h" |
30 | |
ac27b0f5 |
31 | #ifndef PERLIO_LAYERS |
32 | int |
33 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
34 | { |
95c70f20 |
35 | if (!names || !*names || strEQ(names,":crlf") || strEQ(names,":raw")) |
36 | { |
37 | return 0; |
88b61e10 |
38 | } |
ac27b0f5 |
39 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl",names); |
5a2dd417 |
40 | /* NOTREACHED */ |
88b61e10 |
41 | return -1; |
ac27b0f5 |
42 | } |
60382766 |
43 | |
44 | int |
45 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) |
46 | { |
47 | /* This used to be contents of do_binmode in doio.c */ |
48 | #ifdef DOSISH |
49 | # if defined(atarist) || defined(__MINT__) |
50 | if (!PerlIO_flush(fp)) { |
51 | if (mode & O_BINARY) |
52 | ((FILE*)fp)->_flag |= _IOBIN; |
53 | else |
54 | ((FILE*)fp)->_flag &= ~ _IOBIN; |
55 | return 1; |
56 | } |
57 | return 0; |
58 | # else |
59 | if (PerlLIO_setmode(PerlIO_fileno(fp), mode) != -1) { |
60 | # if defined(WIN32) && defined(__BORLANDC__) |
61 | /* The translation mode of the stream is maintained independent |
62 | * of the translation mode of the fd in the Borland RTL (heavy |
63 | * digging through their runtime sources reveal). User has to |
64 | * set the mode explicitly for the stream (though they don't |
65 | * document this anywhere). GSAR 97-5-24 |
66 | */ |
67 | PerlIO_seek(fp,0L,0); |
68 | if (mode & O_BINARY) |
69 | ((FILE*)fp)->flags |= _F_BIN; |
70 | else |
71 | ((FILE*)fp)->flags &= ~ _F_BIN; |
72 | # endif |
73 | return 1; |
74 | } |
75 | else |
76 | return 0; |
77 | # endif |
78 | #else |
79 | # if defined(USEMYBINMODE) |
80 | if (my_binmode(fp, iotype, mode) != FALSE) |
81 | return 1; |
82 | else |
83 | return 0; |
84 | # else |
85 | return 1; |
86 | # endif |
87 | #endif |
88 | } |
89 | |
90 | |
91 | |
92 | |
ac27b0f5 |
93 | #endif |
94 | |
32e30700 |
95 | #if !defined(PERL_IMPLICIT_SYS) |
96 | |
6f9d8c32 |
97 | #ifdef PERLIO_IS_STDIO |
760ac839 |
98 | |
99 | void |
8ac85365 |
100 | PerlIO_init(void) |
760ac839 |
101 | { |
6f9d8c32 |
102 | /* Does nothing (yet) except force this file to be included |
760ac839 |
103 | in perl binary. That allows this file to force inclusion |
6f9d8c32 |
104 | of other functions that may be required by loadable |
105 | extensions e.g. for FileHandle::tmpfile |
760ac839 |
106 | */ |
107 | } |
108 | |
33dcbb9a |
109 | #undef PerlIO_tmpfile |
110 | PerlIO * |
8ac85365 |
111 | PerlIO_tmpfile(void) |
33dcbb9a |
112 | { |
113 | return tmpfile(); |
114 | } |
115 | |
760ac839 |
116 | #else /* PERLIO_IS_STDIO */ |
117 | |
118 | #ifdef USE_SFIO |
119 | |
120 | #undef HAS_FSETPOS |
121 | #undef HAS_FGETPOS |
122 | |
6f9d8c32 |
123 | /* This section is just to make sure these functions |
760ac839 |
124 | get pulled in from libsfio.a |
125 | */ |
126 | |
127 | #undef PerlIO_tmpfile |
128 | PerlIO * |
c78749f2 |
129 | PerlIO_tmpfile(void) |
760ac839 |
130 | { |
131 | return sftmp(0); |
132 | } |
133 | |
134 | void |
c78749f2 |
135 | PerlIO_init(void) |
760ac839 |
136 | { |
6f9d8c32 |
137 | /* Force this file to be included in perl binary. Which allows |
138 | * this file to force inclusion of other functions that may be |
139 | * required by loadable extensions e.g. for FileHandle::tmpfile |
760ac839 |
140 | */ |
141 | |
142 | /* Hack |
143 | * sfio does its own 'autoflush' on stdout in common cases. |
6f9d8c32 |
144 | * Flush results in a lot of lseek()s to regular files and |
760ac839 |
145 | * lot of small writes to pipes. |
146 | */ |
147 | sfset(sfstdout,SF_SHARE,0); |
148 | } |
149 | |
17c3b450 |
150 | #else /* USE_SFIO */ |
6f9d8c32 |
151 | /*======================================================================================*/ |
6f9d8c32 |
152 | /* Implement all the PerlIO interface ourselves. |
9e353e3b |
153 | */ |
760ac839 |
154 | |
76ced9ad |
155 | #include "perliol.h" |
156 | |
b1ef6e3b |
157 | /* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */ |
02f66e2f |
158 | #ifdef I_UNISTD |
159 | #include <unistd.h> |
160 | #endif |
06da4f11 |
161 | #ifdef HAS_MMAP |
162 | #include <sys/mman.h> |
163 | #endif |
164 | |
f3862f8b |
165 | #include "XSUB.h" |
02f66e2f |
166 | |
88b61e10 |
167 | void PerlIO_debug(const char *fmt,...) __attribute__((format(__printf__,1,2))); |
6f9d8c32 |
168 | |
6f9d8c32 |
169 | void |
88b61e10 |
170 | PerlIO_debug(const char *fmt,...) |
6f9d8c32 |
171 | { |
172 | static int dbg = 0; |
88b61e10 |
173 | va_list ap; |
174 | va_start(ap,fmt); |
6f9d8c32 |
175 | if (!dbg) |
176 | { |
00b02797 |
177 | char *s = PerlEnv_getenv("PERLIO_DEBUG"); |
6f9d8c32 |
178 | if (s && *s) |
00b02797 |
179 | dbg = PerlLIO_open3(s,O_WRONLY|O_CREAT|O_APPEND,0666); |
6f9d8c32 |
180 | else |
181 | dbg = -1; |
182 | } |
183 | if (dbg > 0) |
184 | { |
185 | dTHX; |
6f9d8c32 |
186 | SV *sv = newSVpvn("",0); |
187 | char *s; |
188 | STRLEN len; |
05d1247b |
189 | s = CopFILE(PL_curcop); |
190 | if (!s) |
191 | s = "(none)"; |
192 | Perl_sv_catpvf(aTHX_ sv, "%s:%"IVdf" ", s, (IV)CopLINE(PL_curcop)); |
c7fc522f |
193 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
194 | |
6f9d8c32 |
195 | s = SvPV(sv,len); |
00b02797 |
196 | PerlLIO_write(dbg,s,len); |
6f9d8c32 |
197 | SvREFCNT_dec(sv); |
198 | } |
88b61e10 |
199 | va_end(ap); |
6f9d8c32 |
200 | } |
201 | |
9e353e3b |
202 | /*--------------------------------------------------------------------------------------*/ |
203 | |
9e353e3b |
204 | /* Inner level routines */ |
205 | |
b1ef6e3b |
206 | /* Table of pointers to the PerlIO structs (malloc'ed) */ |
05d1247b |
207 | PerlIO *_perlio = NULL; |
208 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 |
209 | |
760ac839 |
210 | PerlIO * |
6f9d8c32 |
211 | PerlIO_allocate(void) |
212 | { |
f3862f8b |
213 | /* Find a free slot in the table, allocating new table as necessary */ |
05d1247b |
214 | PerlIO **last = &_perlio; |
6f9d8c32 |
215 | PerlIO *f; |
05d1247b |
216 | while ((f = *last)) |
6f9d8c32 |
217 | { |
05d1247b |
218 | int i; |
219 | last = (PerlIO **)(f); |
220 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
6f9d8c32 |
221 | { |
05d1247b |
222 | if (!*++f) |
6f9d8c32 |
223 | { |
6f9d8c32 |
224 | return f; |
225 | } |
6f9d8c32 |
226 | } |
6f9d8c32 |
227 | } |
05d1247b |
228 | Newz('I',f,PERLIO_TABLE_SIZE,PerlIO); |
229 | if (!f) |
230 | return NULL; |
231 | *last = f; |
232 | return f+1; |
233 | } |
234 | |
235 | void |
236 | PerlIO_cleantable(PerlIO **tablep) |
237 | { |
238 | PerlIO *table = *tablep; |
239 | if (table) |
240 | { |
241 | int i; |
242 | PerlIO_cleantable((PerlIO **) &(table[0])); |
243 | for (i=PERLIO_TABLE_SIZE-1; i > 0; i--) |
244 | { |
245 | PerlIO *f = table+i; |
60382766 |
246 | if (*f) |
3789aae2 |
247 | { |
248 | PerlIO_close(f); |
249 | } |
05d1247b |
250 | } |
251 | Safefree(table); |
252 | *tablep = NULL; |
253 | } |
254 | } |
255 | |
4a4a6116 |
256 | HV *PerlIO_layer_hv; |
257 | AV *PerlIO_layer_av; |
258 | |
05d1247b |
259 | void |
260 | PerlIO_cleanup(void) |
261 | { |
262 | PerlIO_cleantable(&_perlio); |
6f9d8c32 |
263 | } |
264 | |
9e353e3b |
265 | void |
266 | PerlIO_pop(PerlIO *f) |
760ac839 |
267 | { |
9e353e3b |
268 | PerlIOl *l = *f; |
269 | if (l) |
6f9d8c32 |
270 | { |
06da4f11 |
271 | (*l->tab->Popped)(f); |
9e353e3b |
272 | *f = l->next; |
273 | Safefree(l); |
6f9d8c32 |
274 | } |
6f9d8c32 |
275 | } |
276 | |
9e353e3b |
277 | /*--------------------------------------------------------------------------------------*/ |
b931b1d9 |
278 | /* XS Interface for perl code */ |
9e353e3b |
279 | |
b931b1d9 |
280 | XS(XS_perlio_import) |
f3862f8b |
281 | { |
282 | dXSARGS; |
283 | GV *gv = CvGV(cv); |
284 | char *s = GvNAME(gv); |
285 | STRLEN l = GvNAMELEN(gv); |
286 | PerlIO_debug("%.*s\n",(int) l,s); |
287 | XSRETURN_EMPTY; |
288 | } |
289 | |
b931b1d9 |
290 | XS(XS_perlio_unimport) |
f3862f8b |
291 | { |
292 | dXSARGS; |
293 | GV *gv = CvGV(cv); |
294 | char *s = GvNAME(gv); |
295 | STRLEN l = GvNAMELEN(gv); |
296 | PerlIO_debug("%.*s\n",(int) l,s); |
297 | XSRETURN_EMPTY; |
298 | } |
299 | |
f3862f8b |
300 | SV * |
ac27b0f5 |
301 | PerlIO_find_layer(const char *name, STRLEN len) |
f3862f8b |
302 | { |
303 | dTHX; |
304 | SV **svp; |
305 | SV *sv; |
306 | if (len <= 0) |
307 | len = strlen(name); |
308 | svp = hv_fetch(PerlIO_layer_hv,name,len,0); |
309 | if (svp && (sv = *svp) && SvROK(sv)) |
310 | return *svp; |
311 | return NULL; |
312 | } |
313 | |
b13b2135 |
314 | |
315 | static int |
316 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) |
317 | { |
318 | if (SvROK(sv)) |
319 | { |
b931b1d9 |
320 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 |
321 | PerlIO *ifp = IoIFP(io); |
322 | PerlIO *ofp = IoOFP(io); |
323 | AV *av = (AV *) mg->mg_obj; |
324 | Perl_warn(aTHX_ "set %_ %p %p %p",sv,io,ifp,ofp); |
325 | } |
326 | return 0; |
327 | } |
328 | |
329 | static int |
330 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) |
331 | { |
332 | if (SvROK(sv)) |
333 | { |
b931b1d9 |
334 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 |
335 | PerlIO *ifp = IoIFP(io); |
336 | PerlIO *ofp = IoOFP(io); |
337 | AV *av = (AV *) mg->mg_obj; |
338 | Perl_warn(aTHX_ "get %_ %p %p %p",sv,io,ifp,ofp); |
339 | } |
340 | return 0; |
341 | } |
342 | |
343 | static int |
344 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) |
345 | { |
346 | Perl_warn(aTHX_ "clear %_",sv); |
347 | return 0; |
348 | } |
349 | |
350 | static int |
351 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) |
352 | { |
353 | Perl_warn(aTHX_ "free %_",sv); |
354 | return 0; |
355 | } |
356 | |
357 | MGVTBL perlio_vtab = { |
358 | perlio_mg_get, |
359 | perlio_mg_set, |
360 | NULL, /* len */ |
361 | NULL, |
362 | perlio_mg_free |
363 | }; |
364 | |
365 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
366 | { |
367 | dXSARGS; |
368 | SV *sv = SvRV(ST(1)); |
369 | AV *av = newAV(); |
370 | MAGIC *mg; |
371 | int count = 0; |
372 | int i; |
373 | sv_magic(sv, (SV *)av, '~', NULL, 0); |
374 | SvRMAGICAL_off(sv); |
375 | mg = mg_find(sv,'~'); |
376 | mg->mg_virtual = &perlio_vtab; |
377 | mg_magical(sv); |
378 | Perl_warn(aTHX_ "attrib %_",sv); |
379 | for (i=2; i < items; i++) |
380 | { |
381 | STRLEN len; |
ac27b0f5 |
382 | const char *name = SvPV(ST(i),len); |
b13b2135 |
383 | SV *layer = PerlIO_find_layer(name,len); |
384 | if (layer) |
385 | { |
386 | av_push(av,SvREFCNT_inc(layer)); |
387 | } |
388 | else |
389 | { |
390 | ST(count) = ST(i); |
391 | count++; |
392 | } |
393 | } |
394 | SvREFCNT_dec(av); |
395 | XSRETURN(count); |
396 | } |
397 | |
f3862f8b |
398 | void |
399 | PerlIO_define_layer(PerlIO_funcs *tab) |
400 | { |
401 | dTHX; |
b931b1d9 |
402 | HV *stash = gv_stashpv("perlio::Layer", TRUE); |
e7778b43 |
403 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash); |
f3862f8b |
404 | hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),sv,0); |
405 | } |
406 | |
407 | PerlIO_funcs * |
408 | PerlIO_default_layer(I32 n) |
409 | { |
410 | dTHX; |
411 | SV **svp; |
412 | SV *layer; |
413 | PerlIO_funcs *tab = &PerlIO_stdio; |
414 | int len; |
415 | if (!PerlIO_layer_hv) |
416 | { |
ac27b0f5 |
417 | const char *s = PerlEnv_getenv("PERLIO"); |
b931b1d9 |
418 | newXS("perlio::import",XS_perlio_import,__FILE__); |
419 | newXS("perlio::unimport",XS_perlio_unimport,__FILE__); |
420 | #if 0 |
b13b2135 |
421 | newXS("io::MODIFY_SCALAR_ATTRIBUTES",XS_io_MODIFY_SCALAR_ATTRIBUTES,__FILE__); |
b931b1d9 |
422 | #endif |
423 | PerlIO_layer_hv = get_hv("open::layers",GV_ADD|GV_ADDMULTI); |
424 | PerlIO_layer_av = get_av("open::layers",GV_ADD|GV_ADDMULTI); |
f3862f8b |
425 | PerlIO_define_layer(&PerlIO_unix); |
f3862f8b |
426 | PerlIO_define_layer(&PerlIO_perlio); |
427 | PerlIO_define_layer(&PerlIO_stdio); |
66ecd56b |
428 | PerlIO_define_layer(&PerlIO_crlf); |
06da4f11 |
429 | #ifdef HAS_MMAP |
430 | PerlIO_define_layer(&PerlIO_mmap); |
431 | #endif |
f3862f8b |
432 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_unix.name,0))); |
433 | if (s) |
434 | { |
435 | while (*s) |
436 | { |
00b02797 |
437 | while (*s && isSPACE((unsigned char)*s)) |
f3862f8b |
438 | s++; |
439 | if (*s) |
440 | { |
ac27b0f5 |
441 | const char *e = s; |
f3862f8b |
442 | SV *layer; |
00b02797 |
443 | while (*e && !isSPACE((unsigned char)*e)) |
f3862f8b |
444 | e++; |
ac27b0f5 |
445 | if (*s == ':') |
446 | s++; |
f3862f8b |
447 | layer = PerlIO_find_layer(s,e-s); |
448 | if (layer) |
449 | { |
450 | PerlIO_debug("Pushing %.*s\n",(e-s),s); |
451 | av_push(PerlIO_layer_av,SvREFCNT_inc(layer)); |
452 | } |
453 | else |
ef0f9817 |
454 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(e-s),s); |
f3862f8b |
455 | s = e; |
456 | } |
457 | } |
458 | } |
459 | } |
460 | len = av_len(PerlIO_layer_av); |
461 | if (len < 1) |
462 | { |
463 | if (PerlIO_stdio.Set_ptrcnt) |
464 | { |
465 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_stdio.name,0))); |
466 | } |
467 | else |
468 | { |
469 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_perlio.name,0))); |
470 | } |
471 | len = av_len(PerlIO_layer_av); |
472 | } |
473 | if (n < 0) |
474 | n += len+1; |
475 | svp = av_fetch(PerlIO_layer_av,n,0); |
476 | if (svp && (layer = *svp) && SvROK(layer) && SvIOK((layer = SvRV(layer)))) |
477 | { |
e7778b43 |
478 | tab = INT2PTR(PerlIO_funcs *, SvIV(layer)); |
f3862f8b |
479 | } |
480 | /* PerlIO_debug("Layer %d is %s\n",n,tab->name); */ |
481 | return tab; |
482 | } |
483 | |
60382766 |
484 | #define PerlIO_default_top() PerlIO_default_layer(-1) |
485 | #define PerlIO_default_btm() PerlIO_default_layer(0) |
486 | |
487 | void |
488 | PerlIO_stdstreams() |
489 | { |
490 | if (!_perlio) |
491 | { |
492 | PerlIO_allocate(); |
493 | PerlIO_fdopen(0,"Ir"); |
494 | PerlIO_fdopen(1,"Iw"); |
495 | PerlIO_fdopen(2,"Iw"); |
496 | } |
497 | } |
498 | |
499 | PerlIO * |
500 | PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode) |
501 | { |
502 | PerlIOl *l = NULL; |
503 | Newc('L',l,tab->size,char,PerlIOl); |
504 | if (l) |
505 | { |
506 | Zero(l,tab->size,char); |
507 | l->next = *f; |
508 | l->tab = tab; |
509 | *f = l; |
510 | if ((*l->tab->Pushed)(f,mode) != 0) |
511 | { |
512 | PerlIO_pop(f); |
513 | return NULL; |
514 | } |
515 | } |
516 | return f; |
517 | } |
518 | |
ac27b0f5 |
519 | int |
520 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
521 | { |
522 | if (names) |
523 | { |
524 | const char *s = names; |
525 | while (*s) |
526 | { |
527 | while (isSPACE(*s)) |
528 | s++; |
529 | if (*s == ':') |
530 | s++; |
531 | if (*s) |
532 | { |
533 | const char *e = s; |
534 | while (*e && *e != ':' && !isSPACE(*e)) |
535 | e++; |
536 | if (e > s) |
537 | { |
60382766 |
538 | if ((e - s) == 3 && strncmp(s,"raw",3) == 0) |
ac27b0f5 |
539 | { |
60382766 |
540 | /* Pop back to bottom layer */ |
541 | if (PerlIONext(f)) |
ac27b0f5 |
542 | { |
60382766 |
543 | PerlIO_flush(f); |
544 | while (PerlIONext(f)) |
545 | { |
546 | PerlIO_pop(f); |
547 | } |
ac27b0f5 |
548 | } |
549 | } |
550 | else |
60382766 |
551 | { |
552 | SV *layer = PerlIO_find_layer(s,e-s); |
553 | if (layer) |
554 | { |
555 | PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer))); |
556 | if (tab) |
557 | { |
558 | PerlIO *new = PerlIO_push(f,tab,mode); |
559 | if (!new) |
560 | return -1; |
561 | } |
562 | } |
563 | else |
564 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(int)(e-s),s); |
565 | } |
ac27b0f5 |
566 | } |
567 | s = e; |
568 | } |
569 | } |
570 | } |
571 | return 0; |
572 | } |
573 | |
f3862f8b |
574 | |
9e353e3b |
575 | |
60382766 |
576 | /*--------------------------------------------------------------------------------------*/ |
577 | /* Given the abstraction above the public API functions */ |
578 | |
579 | int |
580 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) |
76ced9ad |
581 | { |
60382766 |
582 | if (!names || (O_TEXT != O_BINARY && mode & O_BINARY)) |
76ced9ad |
583 | { |
60382766 |
584 | PerlIO *top = fp; |
585 | PerlIOl *l; |
586 | while (l = *top) |
76ced9ad |
587 | { |
60382766 |
588 | if (PerlIOBase(top)->tab == &PerlIO_crlf) |
589 | { |
590 | PerlIO_flush(top); |
591 | PerlIO_pop(top); |
592 | break; |
593 | } |
594 | top = PerlIONext(top); |
76ced9ad |
595 | } |
596 | } |
60382766 |
597 | return PerlIO_apply_layers(aTHX_ fp, NULL, names) == 0 ? TRUE : FALSE; |
76ced9ad |
598 | } |
599 | |
b931b1d9 |
600 | #undef PerlIO_close |
601 | int |
602 | PerlIO_close(PerlIO *f) |
603 | { |
604 | int code = (*PerlIOBase(f)->tab->Close)(f); |
605 | while (*f) |
606 | { |
607 | PerlIO_pop(f); |
608 | } |
609 | return code; |
610 | } |
611 | |
612 | #undef PerlIO_fileno |
613 | int |
614 | PerlIO_fileno(PerlIO *f) |
615 | { |
616 | return (*PerlIOBase(f)->tab->Fileno)(f); |
617 | } |
618 | |
619 | |
620 | |
9e353e3b |
621 | #undef PerlIO_fdopen |
622 | PerlIO * |
623 | PerlIO_fdopen(int fd, const char *mode) |
624 | { |
625 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
626 | if (!_perlio) |
627 | PerlIO_stdstreams(); |
06da4f11 |
628 | return (*tab->Fdopen)(tab,fd,mode); |
9e353e3b |
629 | } |
630 | |
6f9d8c32 |
631 | #undef PerlIO_open |
632 | PerlIO * |
633 | PerlIO_open(const char *path, const char *mode) |
634 | { |
9e353e3b |
635 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
636 | if (!_perlio) |
637 | PerlIO_stdstreams(); |
06da4f11 |
638 | return (*tab->Open)(tab,path,mode); |
6f9d8c32 |
639 | } |
640 | |
9e353e3b |
641 | #undef PerlIO_reopen |
642 | PerlIO * |
643 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) |
6f9d8c32 |
644 | { |
9e353e3b |
645 | if (f) |
6f9d8c32 |
646 | { |
9e353e3b |
647 | PerlIO_flush(f); |
648 | if ((*PerlIOBase(f)->tab->Reopen)(path,mode,f) == 0) |
649 | { |
06da4f11 |
650 | if ((*PerlIOBase(f)->tab->Pushed)(f,mode) == 0) |
651 | return f; |
9e353e3b |
652 | } |
653 | return NULL; |
6f9d8c32 |
654 | } |
9e353e3b |
655 | else |
656 | return PerlIO_open(path,mode); |
760ac839 |
657 | } |
658 | |
9e353e3b |
659 | #undef PerlIO_read |
660 | SSize_t |
661 | PerlIO_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
662 | { |
9e353e3b |
663 | return (*PerlIOBase(f)->tab->Read)(f,vbuf,count); |
760ac839 |
664 | } |
665 | |
313ca112 |
666 | #undef PerlIO_unread |
667 | SSize_t |
668 | PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
669 | { |
313ca112 |
670 | return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count); |
760ac839 |
671 | } |
672 | |
9e353e3b |
673 | #undef PerlIO_write |
674 | SSize_t |
675 | PerlIO_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
676 | { |
9e353e3b |
677 | return (*PerlIOBase(f)->tab->Write)(f,vbuf,count); |
760ac839 |
678 | } |
679 | |
9e353e3b |
680 | #undef PerlIO_seek |
6f9d8c32 |
681 | int |
9e353e3b |
682 | PerlIO_seek(PerlIO *f, Off_t offset, int whence) |
760ac839 |
683 | { |
9e353e3b |
684 | return (*PerlIOBase(f)->tab->Seek)(f,offset,whence); |
760ac839 |
685 | } |
686 | |
9e353e3b |
687 | #undef PerlIO_tell |
688 | Off_t |
689 | PerlIO_tell(PerlIO *f) |
760ac839 |
690 | { |
9e353e3b |
691 | return (*PerlIOBase(f)->tab->Tell)(f); |
760ac839 |
692 | } |
693 | |
9e353e3b |
694 | #undef PerlIO_flush |
6f9d8c32 |
695 | int |
9e353e3b |
696 | PerlIO_flush(PerlIO *f) |
760ac839 |
697 | { |
6f9d8c32 |
698 | if (f) |
699 | { |
9e353e3b |
700 | return (*PerlIOBase(f)->tab->Flush)(f); |
6f9d8c32 |
701 | } |
9e353e3b |
702 | else |
6f9d8c32 |
703 | { |
05d1247b |
704 | PerlIO **table = &_perlio; |
9e353e3b |
705 | int code = 0; |
05d1247b |
706 | while ((f = *table)) |
6f9d8c32 |
707 | { |
05d1247b |
708 | int i; |
709 | table = (PerlIO **)(f++); |
710 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
9e353e3b |
711 | { |
712 | if (*f && PerlIO_flush(f) != 0) |
713 | code = -1; |
05d1247b |
714 | f++; |
9e353e3b |
715 | } |
6f9d8c32 |
716 | } |
9e353e3b |
717 | return code; |
6f9d8c32 |
718 | } |
760ac839 |
719 | } |
720 | |
06da4f11 |
721 | #undef PerlIO_fill |
722 | int |
723 | PerlIO_fill(PerlIO *f) |
724 | { |
725 | return (*PerlIOBase(f)->tab->Fill)(f); |
726 | } |
727 | |
f3862f8b |
728 | #undef PerlIO_isutf8 |
729 | int |
730 | PerlIO_isutf8(PerlIO *f) |
731 | { |
732 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; |
733 | } |
734 | |
9e353e3b |
735 | #undef PerlIO_eof |
6f9d8c32 |
736 | int |
9e353e3b |
737 | PerlIO_eof(PerlIO *f) |
760ac839 |
738 | { |
9e353e3b |
739 | return (*PerlIOBase(f)->tab->Eof)(f); |
740 | } |
741 | |
742 | #undef PerlIO_error |
743 | int |
744 | PerlIO_error(PerlIO *f) |
745 | { |
746 | return (*PerlIOBase(f)->tab->Error)(f); |
747 | } |
748 | |
749 | #undef PerlIO_clearerr |
750 | void |
751 | PerlIO_clearerr(PerlIO *f) |
752 | { |
753 | (*PerlIOBase(f)->tab->Clearerr)(f); |
754 | } |
755 | |
756 | #undef PerlIO_setlinebuf |
757 | void |
758 | PerlIO_setlinebuf(PerlIO *f) |
759 | { |
760 | (*PerlIOBase(f)->tab->Setlinebuf)(f); |
761 | } |
762 | |
763 | #undef PerlIO_has_base |
764 | int |
765 | PerlIO_has_base(PerlIO *f) |
766 | { |
767 | if (f && *f) |
6f9d8c32 |
768 | { |
9e353e3b |
769 | return (PerlIOBase(f)->tab->Get_base != NULL); |
6f9d8c32 |
770 | } |
9e353e3b |
771 | return 0; |
760ac839 |
772 | } |
773 | |
9e353e3b |
774 | #undef PerlIO_fast_gets |
775 | int |
776 | PerlIO_fast_gets(PerlIO *f) |
760ac839 |
777 | { |
9e353e3b |
778 | if (f && *f) |
6f9d8c32 |
779 | { |
c7fc522f |
780 | PerlIOl *l = PerlIOBase(f); |
781 | return (l->tab->Set_ptrcnt != NULL); |
6f9d8c32 |
782 | } |
9e353e3b |
783 | return 0; |
784 | } |
785 | |
786 | #undef PerlIO_has_cntptr |
787 | int |
788 | PerlIO_has_cntptr(PerlIO *f) |
789 | { |
790 | if (f && *f) |
791 | { |
792 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
793 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); |
794 | } |
795 | return 0; |
796 | } |
797 | |
798 | #undef PerlIO_canset_cnt |
799 | int |
800 | PerlIO_canset_cnt(PerlIO *f) |
801 | { |
802 | if (f && *f) |
803 | { |
c7fc522f |
804 | PerlIOl *l = PerlIOBase(f); |
805 | return (l->tab->Set_ptrcnt != NULL); |
9e353e3b |
806 | } |
c7fc522f |
807 | return 0; |
760ac839 |
808 | } |
809 | |
810 | #undef PerlIO_get_base |
888911fc |
811 | STDCHAR * |
a20bf0c3 |
812 | PerlIO_get_base(PerlIO *f) |
760ac839 |
813 | { |
9e353e3b |
814 | return (*PerlIOBase(f)->tab->Get_base)(f); |
815 | } |
816 | |
817 | #undef PerlIO_get_bufsiz |
818 | int |
819 | PerlIO_get_bufsiz(PerlIO *f) |
820 | { |
821 | return (*PerlIOBase(f)->tab->Get_bufsiz)(f); |
822 | } |
823 | |
824 | #undef PerlIO_get_ptr |
825 | STDCHAR * |
826 | PerlIO_get_ptr(PerlIO *f) |
827 | { |
828 | return (*PerlIOBase(f)->tab->Get_ptr)(f); |
829 | } |
830 | |
831 | #undef PerlIO_get_cnt |
05d1247b |
832 | int |
9e353e3b |
833 | PerlIO_get_cnt(PerlIO *f) |
834 | { |
835 | return (*PerlIOBase(f)->tab->Get_cnt)(f); |
836 | } |
837 | |
838 | #undef PerlIO_set_cnt |
839 | void |
05d1247b |
840 | PerlIO_set_cnt(PerlIO *f,int cnt) |
9e353e3b |
841 | { |
f3862f8b |
842 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt); |
9e353e3b |
843 | } |
844 | |
845 | #undef PerlIO_set_ptrcnt |
846 | void |
05d1247b |
847 | PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) |
9e353e3b |
848 | { |
f3862f8b |
849 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt); |
9e353e3b |
850 | } |
851 | |
852 | /*--------------------------------------------------------------------------------------*/ |
853 | /* "Methods" of the "base class" */ |
854 | |
855 | IV |
856 | PerlIOBase_fileno(PerlIO *f) |
857 | { |
858 | return PerlIO_fileno(PerlIONext(f)); |
859 | } |
860 | |
76ced9ad |
861 | IV |
862 | PerlIOBase_pushed(PerlIO *f, const char *mode) |
9e353e3b |
863 | { |
76ced9ad |
864 | PerlIOl *l = PerlIOBase(f); |
865 | l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
866 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); |
867 | if (mode) |
6f9d8c32 |
868 | { |
76ced9ad |
869 | switch (*mode++) |
06da4f11 |
870 | { |
76ced9ad |
871 | case 'r': |
872 | l->flags = PERLIO_F_CANREAD; |
873 | break; |
874 | case 'a': |
875 | l->flags = PERLIO_F_APPEND|PERLIO_F_CANWRITE; |
876 | break; |
877 | case 'w': |
878 | l->flags = PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE; |
879 | break; |
880 | default: |
881 | errno = EINVAL; |
882 | return -1; |
883 | } |
884 | while (*mode) |
885 | { |
886 | switch (*mode++) |
887 | { |
888 | case '+': |
889 | l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE; |
890 | break; |
891 | case 'b': |
892 | l->flags |= PERLIO_F_BINARY; |
893 | break; |
894 | default: |
895 | errno = EINVAL; |
896 | return -1; |
897 | } |
06da4f11 |
898 | } |
6f9d8c32 |
899 | } |
76ced9ad |
900 | else |
901 | { |
902 | if (l->next) |
903 | { |
904 | l->flags |= l->next->flags & |
905 | (PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
906 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); |
907 | } |
908 | } |
909 | return 0; |
910 | } |
911 | |
912 | IV |
913 | PerlIOBase_popped(PerlIO *f) |
914 | { |
915 | return 0; |
760ac839 |
916 | } |
917 | |
9e353e3b |
918 | SSize_t |
919 | PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count) |
920 | { |
921 | Off_t old = PerlIO_tell(f); |
922 | if (PerlIO_seek(f,-((Off_t)count),SEEK_CUR) == 0) |
923 | { |
924 | Off_t new = PerlIO_tell(f); |
925 | return old - new; |
926 | } |
927 | return 0; |
928 | } |
929 | |
930 | IV |
06da4f11 |
931 | PerlIOBase_noop_ok(PerlIO *f) |
9e353e3b |
932 | { |
933 | return 0; |
934 | } |
935 | |
936 | IV |
06da4f11 |
937 | PerlIOBase_noop_fail(PerlIO *f) |
938 | { |
939 | return -1; |
940 | } |
941 | |
942 | IV |
9e353e3b |
943 | PerlIOBase_close(PerlIO *f) |
944 | { |
945 | IV code = 0; |
946 | if (PerlIO_flush(f) != 0) |
947 | code = -1; |
948 | if (PerlIO_close(PerlIONext(f)) != 0) |
949 | code = -1; |
950 | PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN); |
951 | return code; |
952 | } |
953 | |
954 | IV |
955 | PerlIOBase_eof(PerlIO *f) |
956 | { |
957 | if (f && *f) |
958 | { |
959 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
960 | } |
961 | return 1; |
962 | } |
963 | |
964 | IV |
965 | PerlIOBase_error(PerlIO *f) |
966 | { |
967 | if (f && *f) |
968 | { |
969 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
970 | } |
971 | return 1; |
972 | } |
973 | |
974 | void |
975 | PerlIOBase_clearerr(PerlIO *f) |
976 | { |
977 | if (f && *f) |
978 | { |
979 | PerlIOBase(f)->flags &= ~PERLIO_F_ERROR; |
980 | } |
981 | } |
982 | |
983 | void |
984 | PerlIOBase_setlinebuf(PerlIO *f) |
985 | { |
986 | |
987 | } |
988 | |
9e353e3b |
989 | /*--------------------------------------------------------------------------------------*/ |
990 | /* Bottom-most level for UNIX-like case */ |
991 | |
992 | typedef struct |
993 | { |
994 | struct _PerlIO base; /* The generic part */ |
995 | int fd; /* UNIX like file descriptor */ |
996 | int oflags; /* open/fcntl flags */ |
997 | } PerlIOUnix; |
998 | |
6f9d8c32 |
999 | int |
9e353e3b |
1000 | PerlIOUnix_oflags(const char *mode) |
760ac839 |
1001 | { |
9e353e3b |
1002 | int oflags = -1; |
1003 | switch(*mode) |
1004 | { |
1005 | case 'r': |
1006 | oflags = O_RDONLY; |
1007 | if (*++mode == '+') |
1008 | { |
1009 | oflags = O_RDWR; |
1010 | mode++; |
1011 | } |
1012 | break; |
1013 | |
1014 | case 'w': |
1015 | oflags = O_CREAT|O_TRUNC; |
1016 | if (*++mode == '+') |
1017 | { |
1018 | oflags |= O_RDWR; |
1019 | mode++; |
1020 | } |
1021 | else |
1022 | oflags |= O_WRONLY; |
1023 | break; |
1024 | |
1025 | case 'a': |
1026 | oflags = O_CREAT|O_APPEND; |
1027 | if (*++mode == '+') |
1028 | { |
1029 | oflags |= O_RDWR; |
1030 | mode++; |
1031 | } |
1032 | else |
1033 | oflags |= O_WRONLY; |
1034 | break; |
1035 | } |
83b075c3 |
1036 | if (*mode == 'b') |
1037 | { |
1038 | oflags |= O_BINARY; |
60382766 |
1039 | mode++; |
1040 | } |
99efab12 |
1041 | /* Always open in binary mode */ |
1042 | oflags |= O_BINARY; |
9e353e3b |
1043 | if (*mode || oflags == -1) |
6f9d8c32 |
1044 | { |
9e353e3b |
1045 | errno = EINVAL; |
1046 | oflags = -1; |
6f9d8c32 |
1047 | } |
9e353e3b |
1048 | return oflags; |
1049 | } |
1050 | |
1051 | IV |
1052 | PerlIOUnix_fileno(PerlIO *f) |
1053 | { |
1054 | return PerlIOSelf(f,PerlIOUnix)->fd; |
1055 | } |
1056 | |
1057 | PerlIO * |
06da4f11 |
1058 | PerlIOUnix_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
1059 | { |
1060 | PerlIO *f = NULL; |
c7fc522f |
1061 | if (*mode == 'I') |
1062 | mode++; |
9e353e3b |
1063 | if (fd >= 0) |
1064 | { |
1065 | int oflags = PerlIOUnix_oflags(mode); |
1066 | if (oflags != -1) |
1067 | { |
06da4f11 |
1068 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); |
9e353e3b |
1069 | s->fd = fd; |
1070 | s->oflags = oflags; |
1071 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
1072 | } |
1073 | } |
1074 | return f; |
1075 | } |
1076 | |
1077 | PerlIO * |
06da4f11 |
1078 | PerlIOUnix_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
1079 | { |
1080 | PerlIO *f = NULL; |
1081 | int oflags = PerlIOUnix_oflags(mode); |
1082 | if (oflags != -1) |
1083 | { |
00b02797 |
1084 | int fd = PerlLIO_open3(path,oflags,0666); |
9e353e3b |
1085 | if (fd >= 0) |
1086 | { |
06da4f11 |
1087 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); |
9e353e3b |
1088 | s->fd = fd; |
1089 | s->oflags = oflags; |
1090 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
1091 | } |
1092 | } |
1093 | return f; |
760ac839 |
1094 | } |
1095 | |
760ac839 |
1096 | int |
9e353e3b |
1097 | PerlIOUnix_reopen(const char *path, const char *mode, PerlIO *f) |
760ac839 |
1098 | { |
9e353e3b |
1099 | PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix); |
1100 | int oflags = PerlIOUnix_oflags(mode); |
1101 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
1102 | (*PerlIOBase(f)->tab->Close)(f); |
1103 | if (oflags != -1) |
1104 | { |
00b02797 |
1105 | int fd = PerlLIO_open3(path,oflags,0666); |
9e353e3b |
1106 | if (fd >= 0) |
1107 | { |
1108 | s->fd = fd; |
1109 | s->oflags = oflags; |
1110 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
1111 | return 0; |
1112 | } |
1113 | } |
1114 | return -1; |
1115 | } |
1116 | |
1117 | SSize_t |
1118 | PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count) |
1119 | { |
1120 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
8f24bd79 |
1121 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
1122 | return 0; |
9e353e3b |
1123 | while (1) |
1124 | { |
00b02797 |
1125 | SSize_t len = PerlLIO_read(fd,vbuf,count); |
9e353e3b |
1126 | if (len >= 0 || errno != EINTR) |
06da4f11 |
1127 | { |
1128 | if (len < 0) |
1129 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1130 | else if (len == 0 && count != 0) |
1131 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
1132 | return len; |
1133 | } |
9e353e3b |
1134 | } |
1135 | } |
1136 | |
1137 | SSize_t |
1138 | PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count) |
1139 | { |
1140 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1141 | while (1) |
1142 | { |
00b02797 |
1143 | SSize_t len = PerlLIO_write(fd,vbuf,count); |
9e353e3b |
1144 | if (len >= 0 || errno != EINTR) |
06da4f11 |
1145 | { |
1146 | if (len < 0) |
1147 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1148 | return len; |
1149 | } |
9e353e3b |
1150 | } |
1151 | } |
1152 | |
1153 | IV |
1154 | PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence) |
1155 | { |
00b02797 |
1156 | Off_t new = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence); |
06da4f11 |
1157 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
9e353e3b |
1158 | return (new == (Off_t) -1) ? -1 : 0; |
1159 | } |
1160 | |
1161 | Off_t |
1162 | PerlIOUnix_tell(PerlIO *f) |
1163 | { |
00b02797 |
1164 | return PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
9e353e3b |
1165 | } |
1166 | |
1167 | IV |
1168 | PerlIOUnix_close(PerlIO *f) |
1169 | { |
1170 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1171 | int code = 0; |
00b02797 |
1172 | while (PerlLIO_close(fd) != 0) |
9e353e3b |
1173 | { |
1174 | if (errno != EINTR) |
1175 | { |
1176 | code = -1; |
1177 | break; |
1178 | } |
1179 | } |
1180 | if (code == 0) |
1181 | { |
1182 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
1183 | } |
1184 | return code; |
1185 | } |
1186 | |
1187 | PerlIO_funcs PerlIO_unix = { |
1188 | "unix", |
1189 | sizeof(PerlIOUnix), |
1190 | 0, |
1191 | PerlIOUnix_fileno, |
1192 | PerlIOUnix_fdopen, |
1193 | PerlIOUnix_open, |
1194 | PerlIOUnix_reopen, |
06da4f11 |
1195 | PerlIOBase_pushed, |
1196 | PerlIOBase_noop_ok, |
9e353e3b |
1197 | PerlIOUnix_read, |
1198 | PerlIOBase_unread, |
1199 | PerlIOUnix_write, |
1200 | PerlIOUnix_seek, |
1201 | PerlIOUnix_tell, |
1202 | PerlIOUnix_close, |
76ced9ad |
1203 | PerlIOBase_noop_ok, /* flush */ |
1204 | PerlIOBase_noop_fail, /* fill */ |
9e353e3b |
1205 | PerlIOBase_eof, |
1206 | PerlIOBase_error, |
1207 | PerlIOBase_clearerr, |
1208 | PerlIOBase_setlinebuf, |
1209 | NULL, /* get_base */ |
1210 | NULL, /* get_bufsiz */ |
1211 | NULL, /* get_ptr */ |
1212 | NULL, /* get_cnt */ |
1213 | NULL, /* set_ptrcnt */ |
1214 | }; |
1215 | |
1216 | /*--------------------------------------------------------------------------------------*/ |
1217 | /* stdio as a layer */ |
1218 | |
1219 | typedef struct |
1220 | { |
1221 | struct _PerlIO base; |
1222 | FILE * stdio; /* The stream */ |
1223 | } PerlIOStdio; |
1224 | |
1225 | IV |
1226 | PerlIOStdio_fileno(PerlIO *f) |
1227 | { |
1228 | return fileno(PerlIOSelf(f,PerlIOStdio)->stdio); |
1229 | } |
1230 | |
1231 | |
1232 | PerlIO * |
06da4f11 |
1233 | PerlIOStdio_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
1234 | { |
1235 | PerlIO *f = NULL; |
c7fc522f |
1236 | int init = 0; |
1237 | if (*mode == 'I') |
1238 | { |
1239 | init = 1; |
1240 | mode++; |
1241 | } |
9e353e3b |
1242 | if (fd >= 0) |
1243 | { |
c7fc522f |
1244 | FILE *stdio = NULL; |
1245 | if (init) |
1246 | { |
1247 | switch(fd) |
1248 | { |
1249 | case 0: |
1250 | stdio = stdin; |
1251 | break; |
1252 | case 1: |
1253 | stdio = stdout; |
1254 | break; |
1255 | case 2: |
1256 | stdio = stderr; |
1257 | break; |
1258 | } |
1259 | } |
1260 | else |
1261 | stdio = fdopen(fd,mode); |
9e353e3b |
1262 | if (stdio) |
1263 | { |
06da4f11 |
1264 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); |
9e353e3b |
1265 | s->stdio = stdio; |
1266 | } |
1267 | } |
1268 | return f; |
1269 | } |
1270 | |
1271 | #undef PerlIO_importFILE |
1272 | PerlIO * |
1273 | PerlIO_importFILE(FILE *stdio, int fl) |
1274 | { |
1275 | PerlIO *f = NULL; |
1276 | if (stdio) |
1277 | { |
1278 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,"r+"),PerlIOStdio); |
1279 | s->stdio = stdio; |
1280 | } |
1281 | return f; |
1282 | } |
1283 | |
1284 | PerlIO * |
06da4f11 |
1285 | PerlIOStdio_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
1286 | { |
1287 | PerlIO *f = NULL; |
1288 | FILE *stdio = fopen(path,mode); |
1289 | if (stdio) |
1290 | { |
06da4f11 |
1291 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); |
9e353e3b |
1292 | s->stdio = stdio; |
1293 | } |
1294 | return f; |
760ac839 |
1295 | } |
1296 | |
6f9d8c32 |
1297 | int |
9e353e3b |
1298 | PerlIOStdio_reopen(const char *path, const char *mode, PerlIO *f) |
1299 | { |
1300 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); |
1301 | FILE *stdio = freopen(path,mode,s->stdio); |
1302 | if (!s->stdio) |
1303 | return -1; |
1304 | s->stdio = stdio; |
1305 | return 0; |
1306 | } |
1307 | |
1308 | SSize_t |
1309 | PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count) |
1310 | { |
1311 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
c7fc522f |
1312 | SSize_t got = 0; |
9e353e3b |
1313 | if (count == 1) |
1314 | { |
1315 | STDCHAR *buf = (STDCHAR *) vbuf; |
1316 | /* Perl is expecting PerlIO_getc() to fill the buffer |
1317 | * Linux's stdio does not do that for fread() |
1318 | */ |
1319 | int ch = fgetc(s); |
1320 | if (ch != EOF) |
1321 | { |
1322 | *buf = ch; |
c7fc522f |
1323 | got = 1; |
9e353e3b |
1324 | } |
9e353e3b |
1325 | } |
c7fc522f |
1326 | else |
1327 | got = fread(vbuf,1,count,s); |
1328 | return got; |
9e353e3b |
1329 | } |
1330 | |
1331 | SSize_t |
1332 | PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count) |
1333 | { |
1334 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
1335 | STDCHAR *buf = ((STDCHAR *)vbuf)+count-1; |
1336 | SSize_t unread = 0; |
1337 | while (count > 0) |
1338 | { |
1339 | int ch = *buf-- & 0xff; |
1340 | if (ungetc(ch,s) != ch) |
1341 | break; |
1342 | unread++; |
1343 | count--; |
1344 | } |
1345 | return unread; |
1346 | } |
1347 | |
1348 | SSize_t |
1349 | PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count) |
1350 | { |
1351 | return fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio); |
1352 | } |
1353 | |
1354 | IV |
1355 | PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence) |
1356 | { |
c7fc522f |
1357 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1358 | return fseek(stdio,offset,whence); |
9e353e3b |
1359 | } |
1360 | |
1361 | Off_t |
1362 | PerlIOStdio_tell(PerlIO *f) |
1363 | { |
c7fc522f |
1364 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1365 | return ftell(stdio); |
9e353e3b |
1366 | } |
1367 | |
1368 | IV |
1369 | PerlIOStdio_close(PerlIO *f) |
1370 | { |
3789aae2 |
1371 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1372 | return fclose(stdio); |
9e353e3b |
1373 | } |
1374 | |
1375 | IV |
1376 | PerlIOStdio_flush(PerlIO *f) |
1377 | { |
1378 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
88b61e10 |
1379 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) |
1380 | { |
1381 | return fflush(stdio); |
1382 | } |
1383 | else |
1384 | { |
1385 | #if 0 |
1386 | /* FIXME: This discards ungetc() and pre-read stuff which is |
1387 | not right if this is just a "sync" from a layer above |
1388 | Suspect right design is to do _this_ but not have layer above |
1389 | flush this layer read-to-read |
1390 | */ |
1391 | /* Not writeable - sync by attempting a seek */ |
1392 | int err = errno; |
1393 | if (fseek(stdio,(Off_t) 0, SEEK_CUR) != 0) |
1394 | errno = err; |
1395 | #endif |
1396 | } |
1397 | return 0; |
9e353e3b |
1398 | } |
1399 | |
1400 | IV |
06da4f11 |
1401 | PerlIOStdio_fill(PerlIO *f) |
1402 | { |
1403 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1404 | int c; |
3789aae2 |
1405 | /* fflush()ing read-only streams can cause trouble on some stdio-s */ |
1406 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
1407 | { |
1408 | if (fflush(stdio) != 0) |
1409 | return EOF; |
1410 | } |
06da4f11 |
1411 | c = fgetc(stdio); |
1412 | if (c == EOF || ungetc(c,stdio) != c) |
1413 | return EOF; |
1414 | return 0; |
1415 | } |
1416 | |
1417 | IV |
9e353e3b |
1418 | PerlIOStdio_eof(PerlIO *f) |
1419 | { |
1420 | return feof(PerlIOSelf(f,PerlIOStdio)->stdio); |
1421 | } |
1422 | |
1423 | IV |
1424 | PerlIOStdio_error(PerlIO *f) |
1425 | { |
1426 | return ferror(PerlIOSelf(f,PerlIOStdio)->stdio); |
1427 | } |
1428 | |
1429 | void |
1430 | PerlIOStdio_clearerr(PerlIO *f) |
1431 | { |
1432 | clearerr(PerlIOSelf(f,PerlIOStdio)->stdio); |
1433 | } |
1434 | |
1435 | void |
1436 | PerlIOStdio_setlinebuf(PerlIO *f) |
1437 | { |
1438 | #ifdef HAS_SETLINEBUF |
1439 | setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio); |
1440 | #else |
1441 | setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0); |
1442 | #endif |
1443 | } |
1444 | |
1445 | #ifdef FILE_base |
1446 | STDCHAR * |
1447 | PerlIOStdio_get_base(PerlIO *f) |
1448 | { |
1449 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1450 | return FILE_base(stdio); |
1451 | } |
1452 | |
1453 | Size_t |
1454 | PerlIOStdio_get_bufsiz(PerlIO *f) |
1455 | { |
1456 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1457 | return FILE_bufsiz(stdio); |
1458 | } |
1459 | #endif |
1460 | |
1461 | #ifdef USE_STDIO_PTR |
1462 | STDCHAR * |
1463 | PerlIOStdio_get_ptr(PerlIO *f) |
1464 | { |
1465 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1466 | return FILE_ptr(stdio); |
1467 | } |
1468 | |
1469 | SSize_t |
1470 | PerlIOStdio_get_cnt(PerlIO *f) |
1471 | { |
1472 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1473 | return FILE_cnt(stdio); |
1474 | } |
1475 | |
1476 | void |
1477 | PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt) |
1478 | { |
1479 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1480 | if (ptr != NULL) |
1481 | { |
1482 | #ifdef STDIO_PTR_LVALUE |
1483 | FILE_ptr(stdio) = ptr; |
1484 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
1485 | if (FILE_cnt(stdio) != (cnt)) |
1486 | { |
1487 | dTHX; |
1488 | assert(FILE_cnt(stdio) == (cnt)); |
1489 | } |
1490 | #endif |
1491 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) |
1492 | /* Setting ptr _does_ change cnt - we are done */ |
1493 | return; |
1494 | #endif |
1495 | #else /* STDIO_PTR_LVALUE */ |
1496 | abort(); |
1497 | #endif /* STDIO_PTR_LVALUE */ |
1498 | } |
1499 | /* Now (or only) set cnt */ |
1500 | #ifdef STDIO_CNT_LVALUE |
1501 | FILE_cnt(stdio) = cnt; |
1502 | #else /* STDIO_CNT_LVALUE */ |
1503 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
1504 | FILE_ptr(stdio) = FILE_ptr(stdio)+(FILE_cnt(stdio)-cnt); |
1505 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
1506 | abort(); |
1507 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
1508 | #endif /* STDIO_CNT_LVALUE */ |
1509 | } |
1510 | |
1511 | #endif |
1512 | |
1513 | PerlIO_funcs PerlIO_stdio = { |
1514 | "stdio", |
1515 | sizeof(PerlIOStdio), |
1516 | 0, |
1517 | PerlIOStdio_fileno, |
1518 | PerlIOStdio_fdopen, |
1519 | PerlIOStdio_open, |
1520 | PerlIOStdio_reopen, |
06da4f11 |
1521 | PerlIOBase_pushed, |
1522 | PerlIOBase_noop_ok, |
9e353e3b |
1523 | PerlIOStdio_read, |
1524 | PerlIOStdio_unread, |
1525 | PerlIOStdio_write, |
1526 | PerlIOStdio_seek, |
1527 | PerlIOStdio_tell, |
1528 | PerlIOStdio_close, |
1529 | PerlIOStdio_flush, |
06da4f11 |
1530 | PerlIOStdio_fill, |
9e353e3b |
1531 | PerlIOStdio_eof, |
1532 | PerlIOStdio_error, |
1533 | PerlIOStdio_clearerr, |
1534 | PerlIOStdio_setlinebuf, |
1535 | #ifdef FILE_base |
1536 | PerlIOStdio_get_base, |
1537 | PerlIOStdio_get_bufsiz, |
1538 | #else |
1539 | NULL, |
1540 | NULL, |
1541 | #endif |
1542 | #ifdef USE_STDIO_PTR |
1543 | PerlIOStdio_get_ptr, |
1544 | PerlIOStdio_get_cnt, |
0eb1d8a4 |
1545 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) |
9e353e3b |
1546 | PerlIOStdio_set_ptrcnt |
1547 | #else /* STDIO_PTR_LVALUE */ |
1548 | NULL |
1549 | #endif /* STDIO_PTR_LVALUE */ |
1550 | #else /* USE_STDIO_PTR */ |
1551 | NULL, |
1552 | NULL, |
1553 | NULL |
1554 | #endif /* USE_STDIO_PTR */ |
1555 | }; |
1556 | |
1557 | #undef PerlIO_exportFILE |
1558 | FILE * |
1559 | PerlIO_exportFILE(PerlIO *f, int fl) |
1560 | { |
1561 | PerlIO_flush(f); |
1562 | /* Should really push stdio discipline when we have them */ |
1563 | return fdopen(PerlIO_fileno(f),"r+"); |
1564 | } |
1565 | |
1566 | #undef PerlIO_findFILE |
1567 | FILE * |
1568 | PerlIO_findFILE(PerlIO *f) |
1569 | { |
1570 | return PerlIO_exportFILE(f,0); |
1571 | } |
1572 | |
1573 | #undef PerlIO_releaseFILE |
1574 | void |
1575 | PerlIO_releaseFILE(PerlIO *p, FILE *f) |
1576 | { |
1577 | } |
1578 | |
1579 | /*--------------------------------------------------------------------------------------*/ |
1580 | /* perlio buffer layer */ |
1581 | |
9e353e3b |
1582 | PerlIO * |
06da4f11 |
1583 | PerlIOBuf_fdopen(PerlIO_funcs *self, int fd, const char *mode) |
9e353e3b |
1584 | { |
1585 | PerlIO_funcs *tab = PerlIO_default_btm(); |
c7fc522f |
1586 | int init = 0; |
1587 | PerlIO *f; |
1588 | if (*mode == 'I') |
1589 | { |
1590 | init = 1; |
1591 | mode++; |
1592 | } |
06da4f11 |
1593 | f = (*tab->Fdopen)(tab,fd,mode); |
6f9d8c32 |
1594 | if (f) |
1595 | { |
c7fc522f |
1596 | /* Initial stderr is unbuffered */ |
1597 | if (!init || fd != 2) |
1598 | { |
06da4f11 |
1599 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); |
c7fc522f |
1600 | b->posn = PerlIO_tell(PerlIONext(f)); |
1601 | } |
6f9d8c32 |
1602 | } |
9e353e3b |
1603 | return f; |
760ac839 |
1604 | } |
1605 | |
9e353e3b |
1606 | PerlIO * |
06da4f11 |
1607 | PerlIOBuf_open(PerlIO_funcs *self, const char *path, const char *mode) |
8c86a920 |
1608 | { |
9e353e3b |
1609 | PerlIO_funcs *tab = PerlIO_default_btm(); |
06da4f11 |
1610 | PerlIO *f = (*tab->Open)(tab,path,mode); |
9e353e3b |
1611 | if (f) |
1612 | { |
06da4f11 |
1613 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); |
c3d7c7c9 |
1614 | b->posn = PerlIO_tell(PerlIONext(f)); |
9e353e3b |
1615 | } |
1616 | return f; |
1617 | } |
1618 | |
1619 | int |
c3d7c7c9 |
1620 | PerlIOBuf_reopen(const char *path, const char *mode, PerlIO *f) |
9e353e3b |
1621 | { |
c3d7c7c9 |
1622 | PerlIO *next = PerlIONext(f); |
1623 | int code = (*PerlIOBase(next)->tab->Reopen)(path,mode,next); |
1624 | if (code = 0) |
1625 | code = (*PerlIOBase(f)->tab->Pushed)(f,mode); |
1626 | if (code == 0) |
1627 | { |
1628 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1629 | b->posn = PerlIO_tell(PerlIONext(f)); |
1630 | } |
1631 | return code; |
9e353e3b |
1632 | } |
1633 | |
9e353e3b |
1634 | /* This "flush" is akin to sfio's sync in that it handles files in either |
1635 | read or write state |
1636 | */ |
1637 | IV |
1638 | PerlIOBuf_flush(PerlIO *f) |
6f9d8c32 |
1639 | { |
9e353e3b |
1640 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1641 | int code = 0; |
1642 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1643 | { |
1644 | /* write() the buffer */ |
1645 | STDCHAR *p = b->buf; |
1646 | int count; |
3789aae2 |
1647 | PerlIO *n = PerlIONext(f); |
9e353e3b |
1648 | while (p < b->ptr) |
1649 | { |
3789aae2 |
1650 | count = PerlIO_write(n,p,b->ptr - p); |
9e353e3b |
1651 | if (count > 0) |
1652 | { |
1653 | p += count; |
1654 | } |
3789aae2 |
1655 | else if (count < 0 || PerlIO_error(n)) |
9e353e3b |
1656 | { |
1657 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1658 | code = -1; |
1659 | break; |
1660 | } |
1661 | } |
1662 | b->posn += (p - b->buf); |
1663 | } |
1664 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
6f9d8c32 |
1665 | { |
9e353e3b |
1666 | /* Note position change */ |
1667 | b->posn += (b->ptr - b->buf); |
1668 | if (b->ptr < b->end) |
1669 | { |
1670 | /* We did not consume all of it */ |
1671 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0) |
1672 | { |
1673 | b->posn = PerlIO_tell(PerlIONext(f)); |
1674 | } |
1675 | } |
6f9d8c32 |
1676 | } |
9e353e3b |
1677 | b->ptr = b->end = b->buf; |
1678 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
88b61e10 |
1679 | /* FIXME: Is this right for read case ? */ |
9e353e3b |
1680 | if (PerlIO_flush(PerlIONext(f)) != 0) |
1681 | code = -1; |
1682 | return code; |
6f9d8c32 |
1683 | } |
1684 | |
06da4f11 |
1685 | IV |
1686 | PerlIOBuf_fill(PerlIO *f) |
1687 | { |
1688 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
88b61e10 |
1689 | PerlIO *n = PerlIONext(f); |
06da4f11 |
1690 | SSize_t avail; |
88b61e10 |
1691 | /* FIXME: doing the down-stream flush is a bad idea if it causes |
1692 | pre-read data in stdio buffer to be discarded |
1693 | but this is too simplistic - as it skips _our_ hosekeeping |
1694 | and breaks tell tests. |
1695 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
1696 | { |
1697 | } |
1698 | */ |
06da4f11 |
1699 | if (PerlIO_flush(f) != 0) |
1700 | return -1; |
88b61e10 |
1701 | |
06da4f11 |
1702 | b->ptr = b->end = b->buf; |
88b61e10 |
1703 | if (PerlIO_fast_gets(n)) |
1704 | { |
1705 | /* Layer below is also buffered |
1706 | * We do _NOT_ want to call its ->Read() because that will loop |
1707 | * till it gets what we asked for which may hang on a pipe etc. |
1708 | * Instead take anything it has to hand, or ask it to fill _once_. |
1709 | */ |
1710 | avail = PerlIO_get_cnt(n); |
1711 | if (avail <= 0) |
1712 | { |
1713 | avail = PerlIO_fill(n); |
1714 | if (avail == 0) |
1715 | avail = PerlIO_get_cnt(n); |
1716 | else |
1717 | { |
1718 | if (!PerlIO_error(n) && PerlIO_eof(n)) |
1719 | avail = 0; |
1720 | } |
1721 | } |
1722 | if (avail > 0) |
1723 | { |
1724 | STDCHAR *ptr = PerlIO_get_ptr(n); |
1725 | SSize_t cnt = avail; |
1726 | if (avail > b->bufsiz) |
1727 | avail = b->bufsiz; |
1728 | Copy(ptr,b->buf,avail,STDCHAR); |
1729 | PerlIO_set_ptrcnt(n,ptr+avail,cnt-avail); |
1730 | } |
1731 | } |
1732 | else |
1733 | { |
1734 | avail = PerlIO_read(n,b->ptr,b->bufsiz); |
1735 | } |
06da4f11 |
1736 | if (avail <= 0) |
1737 | { |
1738 | if (avail == 0) |
1739 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
1740 | else |
1741 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1742 | return -1; |
1743 | } |
1744 | b->end = b->buf+avail; |
1745 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
1746 | return 0; |
1747 | } |
1748 | |
6f9d8c32 |
1749 | SSize_t |
9e353e3b |
1750 | PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
1751 | { |
99efab12 |
1752 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1753 | STDCHAR *buf = (STDCHAR *) vbuf; |
6f9d8c32 |
1754 | if (f) |
1755 | { |
9e353e3b |
1756 | if (!b->ptr) |
06da4f11 |
1757 | PerlIO_get_base(f); |
9e353e3b |
1758 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
f89522bf |
1759 | return 0; |
6f9d8c32 |
1760 | while (count > 0) |
1761 | { |
99efab12 |
1762 | SSize_t avail = PerlIO_get_cnt(f); |
60382766 |
1763 | SSize_t take = (count < avail) ? count : avail; |
99efab12 |
1764 | if (take > 0) |
6f9d8c32 |
1765 | { |
99efab12 |
1766 | STDCHAR *ptr = PerlIO_get_ptr(f); |
1767 | Copy(ptr,buf,take,STDCHAR); |
1768 | PerlIO_set_ptrcnt(f,ptr+take,(avail -= take)); |
1769 | count -= take; |
1770 | buf += take; |
6f9d8c32 |
1771 | } |
99efab12 |
1772 | if (count > 0 && avail <= 0) |
6f9d8c32 |
1773 | { |
06da4f11 |
1774 | if (PerlIO_fill(f) != 0) |
1775 | break; |
6f9d8c32 |
1776 | } |
1777 | } |
99efab12 |
1778 | return (buf - (STDCHAR *) vbuf); |
6f9d8c32 |
1779 | } |
1780 | return 0; |
1781 | } |
1782 | |
9e353e3b |
1783 | SSize_t |
1784 | PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
1785 | { |
9e353e3b |
1786 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
1787 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1788 | SSize_t unread = 0; |
1789 | SSize_t avail; |
9e353e3b |
1790 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1791 | PerlIO_flush(f); |
06da4f11 |
1792 | if (!b->buf) |
1793 | PerlIO_get_base(f); |
9e353e3b |
1794 | if (b->buf) |
1795 | { |
1796 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
1797 | { |
1798 | avail = (b->ptr - b->buf); |
1799 | if (avail > (SSize_t) count) |
1800 | avail = count; |
1801 | b->ptr -= avail; |
1802 | } |
1803 | else |
1804 | { |
1805 | avail = b->bufsiz; |
1806 | if (avail > (SSize_t) count) |
1807 | avail = count; |
1808 | b->end = b->ptr + avail; |
1809 | } |
1810 | if (avail > 0) |
1811 | { |
1812 | buf -= avail; |
1813 | if (buf != b->ptr) |
1814 | { |
88b61e10 |
1815 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b |
1816 | } |
1817 | count -= avail; |
1818 | unread += avail; |
1819 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
1820 | } |
1821 | } |
1822 | return unread; |
760ac839 |
1823 | } |
1824 | |
9e353e3b |
1825 | SSize_t |
1826 | PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
1827 | { |
9e353e3b |
1828 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1829 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
1830 | Size_t written = 0; |
1831 | if (!b->buf) |
06da4f11 |
1832 | PerlIO_get_base(f); |
9e353e3b |
1833 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
1834 | return 0; |
1835 | while (count > 0) |
1836 | { |
1837 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); |
1838 | if ((SSize_t) count < avail) |
1839 | avail = count; |
1840 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
1841 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) |
1842 | { |
1843 | while (avail > 0) |
1844 | { |
1845 | int ch = *buf++; |
1846 | *(b->ptr)++ = ch; |
1847 | count--; |
1848 | avail--; |
1849 | written++; |
1850 | if (ch == '\n') |
1851 | { |
1852 | PerlIO_flush(f); |
1853 | break; |
1854 | } |
1855 | } |
1856 | } |
1857 | else |
1858 | { |
1859 | if (avail) |
1860 | { |
88b61e10 |
1861 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b |
1862 | count -= avail; |
1863 | buf += avail; |
1864 | written += avail; |
1865 | b->ptr += avail; |
1866 | } |
1867 | } |
1868 | if (b->ptr >= (b->buf + b->bufsiz)) |
1869 | PerlIO_flush(f); |
1870 | } |
1871 | return written; |
1872 | } |
1873 | |
1874 | IV |
1875 | PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence) |
1876 | { |
1877 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
06da4f11 |
1878 | int code = PerlIO_flush(f); |
9e353e3b |
1879 | if (code == 0) |
1880 | { |
1881 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
1882 | code = PerlIO_seek(PerlIONext(f),offset,whence); |
1883 | if (code == 0) |
1884 | { |
1885 | b->posn = PerlIO_tell(PerlIONext(f)); |
1886 | } |
1887 | } |
1888 | return code; |
1889 | } |
1890 | |
1891 | Off_t |
1892 | PerlIOBuf_tell(PerlIO *f) |
1893 | { |
1894 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1895 | Off_t posn = b->posn; |
1896 | if (b->buf) |
1897 | posn += (b->ptr - b->buf); |
1898 | return posn; |
1899 | } |
1900 | |
1901 | IV |
1902 | PerlIOBuf_close(PerlIO *f) |
1903 | { |
1904 | IV code = PerlIOBase_close(f); |
1905 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1906 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) |
6f9d8c32 |
1907 | { |
9e353e3b |
1908 | Safefree(b->buf); |
6f9d8c32 |
1909 | } |
9e353e3b |
1910 | b->buf = NULL; |
1911 | b->ptr = b->end = b->buf; |
1912 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
1913 | return code; |
760ac839 |
1914 | } |
1915 | |
760ac839 |
1916 | void |
9e353e3b |
1917 | PerlIOBuf_setlinebuf(PerlIO *f) |
760ac839 |
1918 | { |
6f9d8c32 |
1919 | if (f) |
1920 | { |
9e353e3b |
1921 | PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF; |
6f9d8c32 |
1922 | } |
760ac839 |
1923 | } |
1924 | |
9e353e3b |
1925 | STDCHAR * |
1926 | PerlIOBuf_get_ptr(PerlIO *f) |
1927 | { |
1928 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1929 | if (!b->buf) |
06da4f11 |
1930 | PerlIO_get_base(f); |
9e353e3b |
1931 | return b->ptr; |
1932 | } |
1933 | |
05d1247b |
1934 | SSize_t |
9e353e3b |
1935 | PerlIOBuf_get_cnt(PerlIO *f) |
1936 | { |
1937 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1938 | if (!b->buf) |
06da4f11 |
1939 | PerlIO_get_base(f); |
9e353e3b |
1940 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
1941 | return (b->end - b->ptr); |
1942 | return 0; |
1943 | } |
1944 | |
1945 | STDCHAR * |
1946 | PerlIOBuf_get_base(PerlIO *f) |
1947 | { |
1948 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1949 | if (!b->buf) |
06da4f11 |
1950 | { |
1951 | if (!b->bufsiz) |
1952 | b->bufsiz = 4096; |
1953 | New('B',b->buf,b->bufsiz,STDCHAR); |
1954 | if (!b->buf) |
1955 | { |
1956 | b->buf = (STDCHAR *)&b->oneword; |
1957 | b->bufsiz = sizeof(b->oneword); |
1958 | } |
1959 | b->ptr = b->buf; |
1960 | b->end = b->ptr; |
1961 | } |
9e353e3b |
1962 | return b->buf; |
1963 | } |
1964 | |
1965 | Size_t |
1966 | PerlIOBuf_bufsiz(PerlIO *f) |
1967 | { |
1968 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1969 | if (!b->buf) |
06da4f11 |
1970 | PerlIO_get_base(f); |
9e353e3b |
1971 | return (b->end - b->buf); |
1972 | } |
1973 | |
1974 | void |
05d1247b |
1975 | PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
9e353e3b |
1976 | { |
1977 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1978 | if (!b->buf) |
06da4f11 |
1979 | PerlIO_get_base(f); |
9e353e3b |
1980 | b->ptr = ptr; |
1981 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) |
6f9d8c32 |
1982 | { |
9e353e3b |
1983 | dTHX; |
1984 | assert(PerlIO_get_cnt(f) == cnt); |
1985 | assert(b->ptr >= b->buf); |
6f9d8c32 |
1986 | } |
9e353e3b |
1987 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 |
1988 | } |
1989 | |
9e353e3b |
1990 | PerlIO_funcs PerlIO_perlio = { |
1991 | "perlio", |
1992 | sizeof(PerlIOBuf), |
1993 | 0, |
1994 | PerlIOBase_fileno, |
1995 | PerlIOBuf_fdopen, |
1996 | PerlIOBuf_open, |
c3d7c7c9 |
1997 | PerlIOBuf_reopen, |
06da4f11 |
1998 | PerlIOBase_pushed, |
1999 | PerlIOBase_noop_ok, |
9e353e3b |
2000 | PerlIOBuf_read, |
2001 | PerlIOBuf_unread, |
2002 | PerlIOBuf_write, |
2003 | PerlIOBuf_seek, |
2004 | PerlIOBuf_tell, |
2005 | PerlIOBuf_close, |
2006 | PerlIOBuf_flush, |
06da4f11 |
2007 | PerlIOBuf_fill, |
9e353e3b |
2008 | PerlIOBase_eof, |
2009 | PerlIOBase_error, |
2010 | PerlIOBase_clearerr, |
2011 | PerlIOBuf_setlinebuf, |
2012 | PerlIOBuf_get_base, |
2013 | PerlIOBuf_bufsiz, |
2014 | PerlIOBuf_get_ptr, |
2015 | PerlIOBuf_get_cnt, |
2016 | PerlIOBuf_set_ptrcnt, |
2017 | }; |
2018 | |
66ecd56b |
2019 | /*--------------------------------------------------------------------------------------*/ |
99efab12 |
2020 | /* crlf - translation |
2021 | On read translate CR,LF to "\n" we do this by overriding ptr/cnt entries |
60382766 |
2022 | to hand back a line at a time and keeping a record of which nl we "lied" about. |
99efab12 |
2023 | On write translate "\n" to CR,LF |
66ecd56b |
2024 | */ |
2025 | |
99efab12 |
2026 | typedef struct |
2027 | { |
2028 | PerlIOBuf base; /* PerlIOBuf stuff */ |
60382766 |
2029 | STDCHAR *nl; /* Position of crlf we "lied" about in the buffer */ |
99efab12 |
2030 | } PerlIOCrlf; |
2031 | |
2032 | SSize_t |
2033 | PerlIOCrlf_unread(PerlIO *f, const void *vbuf, Size_t count) |
2034 | { |
2035 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
2036 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
60382766 |
2037 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
99efab12 |
2038 | SSize_t unread = 0; |
2039 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
2040 | PerlIO_flush(f); |
60382766 |
2041 | if (c->nl) |
2042 | { |
2043 | *(c->nl) = 0xd; |
2044 | c->nl = NULL; |
2045 | } |
99efab12 |
2046 | if (!b->buf) |
2047 | PerlIO_get_base(f); |
2048 | if (b->buf) |
2049 | { |
2050 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
2051 | { |
2052 | b->end = b->ptr = b->buf + b->bufsiz; |
2053 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
2054 | } |
2055 | while (count > 0 && b->ptr > b->buf) |
2056 | { |
2057 | int ch = *--buf; |
2058 | if (ch == '\n') |
2059 | { |
2060 | if (b->ptr - 2 >= b->buf) |
2061 | { |
60382766 |
2062 | *--(b->ptr) = 0xa; |
2063 | *--(b->ptr) = 0xd; |
99efab12 |
2064 | unread++; |
2065 | count--; |
2066 | } |
2067 | else |
2068 | { |
2069 | buf++; |
2070 | break; |
2071 | } |
2072 | } |
2073 | else |
2074 | { |
60382766 |
2075 | *--(b->ptr) = ch; |
99efab12 |
2076 | unread++; |
2077 | count--; |
60382766 |
2078 | } |
99efab12 |
2079 | } |
2080 | } |
2081 | return unread; |
2082 | } |
2083 | |
2084 | SSize_t |
2085 | PerlIOCrlf_get_cnt(PerlIO *f) |
2086 | { |
2087 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2088 | if (!b->buf) |
2089 | PerlIO_get_base(f); |
2090 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
2091 | { |
2092 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
2093 | if (!c->nl) |
2094 | { |
2095 | STDCHAR *nl = b->ptr; |
60382766 |
2096 | scan: |
99efab12 |
2097 | while (nl < b->end && *nl != 0xd) |
2098 | nl++; |
2099 | if (nl < b->end && *nl == 0xd) |
2100 | { |
60382766 |
2101 | test: |
99efab12 |
2102 | if (nl+1 < b->end) |
2103 | { |
2104 | if (nl[1] == 0xa) |
2105 | { |
2106 | *nl = '\n'; |
60382766 |
2107 | c->nl = nl; |
99efab12 |
2108 | } |
60382766 |
2109 | else |
99efab12 |
2110 | { |
2111 | /* Not CR,LF but just CR */ |
2112 | nl++; |
60382766 |
2113 | goto scan; |
99efab12 |
2114 | } |
2115 | } |
2116 | else |
2117 | { |
60382766 |
2118 | /* Blast - found CR as last char in buffer */ |
99efab12 |
2119 | if (b->ptr < nl) |
2120 | { |
2121 | /* They may not care, defer work as long as possible */ |
60382766 |
2122 | return (nl - b->ptr); |
99efab12 |
2123 | } |
2124 | else |
2125 | { |
2126 | int code; |
2127 | dTHX; |
2128 | Perl_warn(aTHX_ __FUNCTION__ " f=%p CR @ end of buffer",f); |
2129 | b->ptr++; /* say we have read it as far as flush() is concerned */ |
2130 | b->buf++; /* Leave space an front of buffer */ |
2131 | b->bufsiz--; /* Buffer is thus smaller */ |
2132 | code = PerlIO_fill(f); /* Fetch some more */ |
2133 | b->bufsiz++; /* Restore size for next time */ |
2134 | b->buf--; /* Point at space */ |
2135 | b->ptr = nl = b->buf; /* Which is what we hand off */ |
2136 | b->posn--; /* Buffer starts here */ |
2137 | *nl = 0xd; /* Fill in the CR */ |
60382766 |
2138 | if (code == 0) |
99efab12 |
2139 | goto test; /* fill() call worked */ |
2140 | /* CR at EOF - just fall through */ |
2141 | } |
2142 | } |
60382766 |
2143 | } |
2144 | } |
99efab12 |
2145 | return (((c->nl) ? (c->nl+1) : b->end) - b->ptr); |
2146 | } |
2147 | return 0; |
2148 | } |
2149 | |
2150 | void |
2151 | PerlIOCrlf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
2152 | { |
2153 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2154 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
2155 | if (!b->buf) |
2156 | PerlIO_get_base(f); |
2157 | if (!ptr) |
60382766 |
2158 | { |
2159 | ptr = ((c->nl) ? (c->nl+1) : b->end) - cnt; |
2160 | } |
2161 | else |
2162 | { |
2163 | if (ptr != (((c->nl) ? (c->nl+1) : b->end) - cnt)) |
2164 | abort(); |
2165 | } |
99efab12 |
2166 | if (c->nl) |
2167 | { |
2168 | if (ptr > c->nl) |
2169 | { |
2170 | /* They have taken what we lied about */ |
2171 | *(c->nl) = 0xd; |
2172 | c->nl = NULL; |
2173 | ptr++; |
60382766 |
2174 | } |
99efab12 |
2175 | } |
2176 | b->ptr = ptr; |
2177 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
2178 | } |
2179 | |
2180 | SSize_t |
2181 | PerlIOCrlf_write(PerlIO *f, const void *vbuf, Size_t count) |
2182 | { |
2183 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2184 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
2185 | const STDCHAR *ebuf = buf+count; |
2186 | if (!b->buf) |
2187 | PerlIO_get_base(f); |
2188 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
2189 | return 0; |
2190 | while (buf < ebuf) |
2191 | { |
2192 | STDCHAR *eptr = b->buf+b->bufsiz; |
2193 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
2194 | while (buf < ebuf && b->ptr < eptr) |
2195 | { |
2196 | if (*buf == '\n') |
2197 | { |
60382766 |
2198 | if ((b->ptr + 2) > eptr) |
99efab12 |
2199 | { |
2200 | /* Not room for both */ |
2201 | PerlIO_flush(f); |
2202 | break; |
2203 | } |
60382766 |
2204 | else |
2205 | { |
2206 | *(b->ptr)++ = 0xd; /* CR */ |
2207 | *(b->ptr)++ = 0xa; /* LF */ |
2208 | buf++; |
2209 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) |
2210 | { |
2211 | PerlIO_flush(f); |
2212 | break; |
2213 | } |
99efab12 |
2214 | } |
2215 | } |
2216 | else |
2217 | { |
2218 | int ch = *buf++; |
2219 | *(b->ptr)++ = ch; |
2220 | } |
2221 | if (b->ptr >= eptr) |
2222 | { |
2223 | PerlIO_flush(f); |
2224 | break; |
2225 | } |
2226 | } |
2227 | } |
2228 | return (buf - (STDCHAR *) vbuf); |
2229 | } |
2230 | |
2231 | IV |
2232 | PerlIOCrlf_flush(PerlIO *f) |
2233 | { |
2234 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
2235 | if (c->nl) |
2236 | { |
99efab12 |
2237 | *(c->nl) = 0xd; |
60382766 |
2238 | c->nl = NULL; |
99efab12 |
2239 | } |
2240 | return PerlIOBuf_flush(f); |
2241 | } |
2242 | |
66ecd56b |
2243 | PerlIO_funcs PerlIO_crlf = { |
2244 | "crlf", |
99efab12 |
2245 | sizeof(PerlIOCrlf), |
66ecd56b |
2246 | 0, |
2247 | PerlIOBase_fileno, |
2248 | PerlIOBuf_fdopen, |
2249 | PerlIOBuf_open, |
2250 | PerlIOBuf_reopen, |
2251 | PerlIOBase_pushed, |
99efab12 |
2252 | PerlIOBase_noop_ok, /* popped */ |
2253 | PerlIOBuf_read, /* generic read works with ptr/cnt lies ... */ |
2254 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
2255 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ |
66ecd56b |
2256 | PerlIOBuf_seek, |
2257 | PerlIOBuf_tell, |
2258 | PerlIOBuf_close, |
99efab12 |
2259 | PerlIOCrlf_flush, |
66ecd56b |
2260 | PerlIOBuf_fill, |
2261 | PerlIOBase_eof, |
2262 | PerlIOBase_error, |
2263 | PerlIOBase_clearerr, |
2264 | PerlIOBuf_setlinebuf, |
2265 | PerlIOBuf_get_base, |
2266 | PerlIOBuf_bufsiz, |
2267 | PerlIOBuf_get_ptr, |
99efab12 |
2268 | PerlIOCrlf_get_cnt, |
2269 | PerlIOCrlf_set_ptrcnt, |
66ecd56b |
2270 | }; |
2271 | |
06da4f11 |
2272 | #ifdef HAS_MMAP |
2273 | /*--------------------------------------------------------------------------------------*/ |
2274 | /* mmap as "buffer" layer */ |
2275 | |
2276 | typedef struct |
2277 | { |
2278 | PerlIOBuf base; /* PerlIOBuf stuff */ |
c3d7c7c9 |
2279 | Mmap_t mptr; /* Mapped address */ |
06da4f11 |
2280 | Size_t len; /* mapped length */ |
2281 | STDCHAR *bbuf; /* malloced buffer if map fails */ |
2282 | } PerlIOMmap; |
2283 | |
c3d7c7c9 |
2284 | static size_t page_size = 0; |
2285 | |
06da4f11 |
2286 | IV |
2287 | PerlIOMmap_map(PerlIO *f) |
2288 | { |
68d873c6 |
2289 | dTHX; |
06da4f11 |
2290 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2291 | PerlIOBuf *b = &m->base; |
2292 | IV flags = PerlIOBase(f)->flags; |
2293 | IV code = 0; |
2294 | if (m->len) |
2295 | abort(); |
2296 | if (flags & PERLIO_F_CANREAD) |
2297 | { |
2298 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2299 | int fd = PerlIO_fileno(f); |
2300 | struct stat st; |
2301 | code = fstat(fd,&st); |
2302 | if (code == 0 && S_ISREG(st.st_mode)) |
2303 | { |
2304 | SSize_t len = st.st_size - b->posn; |
2305 | if (len > 0) |
2306 | { |
c3d7c7c9 |
2307 | Off_t posn; |
68d873c6 |
2308 | if (!page_size) { |
2309 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE)) |
2310 | { |
2311 | SETERRNO(0,SS$_NORMAL); |
2312 | # ifdef _SC_PAGESIZE |
2313 | page_size = sysconf(_SC_PAGESIZE); |
2314 | # else |
2315 | page_size = sysconf(_SC_PAGE_SIZE); |
14aaf8e8 |
2316 | # endif |
68d873c6 |
2317 | if ((long)page_size < 0) { |
2318 | if (errno) { |
2319 | SV *error = ERRSV; |
2320 | char *msg; |
2321 | STRLEN n_a; |
2322 | (void)SvUPGRADE(error, SVt_PV); |
2323 | msg = SvPVx(error, n_a); |
14aaf8e8 |
2324 | Perl_croak(aTHX_ "panic: sysconf: %s", msg); |
68d873c6 |
2325 | } |
2326 | else |
14aaf8e8 |
2327 | Perl_croak(aTHX_ "panic: sysconf: pagesize unknown"); |
68d873c6 |
2328 | } |
2329 | } |
2330 | #else |
2331 | # ifdef HAS_GETPAGESIZE |
c3d7c7c9 |
2332 | page_size = getpagesize(); |
68d873c6 |
2333 | # else |
2334 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
2335 | page_size = PAGESIZE; /* compiletime, bad */ |
2336 | # endif |
2337 | # endif |
2338 | #endif |
2339 | if ((IV)page_size <= 0) |
14aaf8e8 |
2340 | Perl_croak(aTHX_ "panic: bad pagesize %"IVdf, (IV)page_size); |
68d873c6 |
2341 | } |
c3d7c7c9 |
2342 | if (b->posn < 0) |
2343 | { |
2344 | /* This is a hack - should never happen - open should have set it ! */ |
2345 | b->posn = PerlIO_tell(PerlIONext(f)); |
2346 | } |
2347 | posn = (b->posn / page_size) * page_size; |
2348 | len = st.st_size - posn; |
2349 | m->mptr = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, posn); |
2350 | if (m->mptr && m->mptr != (Mmap_t) -1) |
06da4f11 |
2351 | { |
2352 | #if defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
c3d7c7c9 |
2353 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 |
2354 | #endif |
c3d7c7c9 |
2355 | PerlIOBase(f)->flags = (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; |
2356 | b->end = ((STDCHAR *)m->mptr) + len; |
2357 | b->buf = ((STDCHAR *)m->mptr) + (b->posn - posn); |
2358 | b->ptr = b->buf; |
2359 | m->len = len; |
06da4f11 |
2360 | } |
2361 | else |
2362 | { |
2363 | b->buf = NULL; |
2364 | } |
2365 | } |
2366 | else |
2367 | { |
2368 | PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF; |
2369 | b->buf = NULL; |
2370 | b->ptr = b->end = b->ptr; |
2371 | code = -1; |
2372 | } |
2373 | } |
2374 | } |
2375 | return code; |
2376 | } |
2377 | |
2378 | IV |
2379 | PerlIOMmap_unmap(PerlIO *f) |
2380 | { |
2381 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2382 | PerlIOBuf *b = &m->base; |
2383 | IV code = 0; |
2384 | if (m->len) |
2385 | { |
2386 | if (b->buf) |
2387 | { |
c3d7c7c9 |
2388 | code = munmap(m->mptr, m->len); |
2389 | b->buf = NULL; |
2390 | m->len = 0; |
2391 | m->mptr = NULL; |
06da4f11 |
2392 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0) |
2393 | code = -1; |
06da4f11 |
2394 | } |
2395 | b->ptr = b->end = b->buf; |
2396 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
2397 | } |
2398 | return code; |
2399 | } |
2400 | |
2401 | STDCHAR * |
2402 | PerlIOMmap_get_base(PerlIO *f) |
2403 | { |
2404 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2405 | PerlIOBuf *b = &m->base; |
2406 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
2407 | { |
2408 | /* Already have a readbuffer in progress */ |
2409 | return b->buf; |
2410 | } |
2411 | if (b->buf) |
2412 | { |
2413 | /* We have a write buffer or flushed PerlIOBuf read buffer */ |
2414 | m->bbuf = b->buf; /* save it in case we need it again */ |
2415 | b->buf = NULL; /* Clear to trigger below */ |
2416 | } |
2417 | if (!b->buf) |
2418 | { |
2419 | PerlIOMmap_map(f); /* Try and map it */ |
2420 | if (!b->buf) |
2421 | { |
2422 | /* Map did not work - recover PerlIOBuf buffer if we have one */ |
2423 | b->buf = m->bbuf; |
2424 | } |
2425 | } |
2426 | b->ptr = b->end = b->buf; |
2427 | if (b->buf) |
2428 | return b->buf; |
2429 | return PerlIOBuf_get_base(f); |
2430 | } |
2431 | |
2432 | SSize_t |
2433 | PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count) |
2434 | { |
2435 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2436 | PerlIOBuf *b = &m->base; |
2437 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
2438 | PerlIO_flush(f); |
2439 | if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count)) |
2440 | { |
2441 | b->ptr -= count; |
2442 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
2443 | return count; |
2444 | } |
2445 | if (m->len) |
2446 | { |
4a4a6116 |
2447 | /* Loose the unwritable mapped buffer */ |
06da4f11 |
2448 | PerlIO_flush(f); |
c3d7c7c9 |
2449 | /* If flush took the "buffer" see if we have one from before */ |
2450 | if (!b->buf && m->bbuf) |
2451 | b->buf = m->bbuf; |
2452 | if (!b->buf) |
2453 | { |
2454 | PerlIOBuf_get_base(f); |
2455 | m->bbuf = b->buf; |
2456 | } |
06da4f11 |
2457 | } |
2458 | return PerlIOBuf_unread(f,vbuf,count); |
2459 | } |
2460 | |
2461 | SSize_t |
2462 | PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count) |
2463 | { |
2464 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2465 | PerlIOBuf *b = &m->base; |
2466 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) |
2467 | { |
2468 | /* No, or wrong sort of, buffer */ |
2469 | if (m->len) |
2470 | { |
2471 | if (PerlIOMmap_unmap(f) != 0) |
2472 | return 0; |
2473 | } |
2474 | /* If unmap took the "buffer" see if we have one from before */ |
2475 | if (!b->buf && m->bbuf) |
2476 | b->buf = m->bbuf; |
2477 | if (!b->buf) |
2478 | { |
2479 | PerlIOBuf_get_base(f); |
2480 | m->bbuf = b->buf; |
2481 | } |
2482 | } |
2483 | return PerlIOBuf_write(f,vbuf,count); |
2484 | } |
2485 | |
2486 | IV |
2487 | PerlIOMmap_flush(PerlIO *f) |
2488 | { |
2489 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2490 | PerlIOBuf *b = &m->base; |
2491 | IV code = PerlIOBuf_flush(f); |
2492 | /* Now we are "synced" at PerlIOBuf level */ |
2493 | if (b->buf) |
2494 | { |
2495 | if (m->len) |
2496 | { |
2497 | /* Unmap the buffer */ |
2498 | if (PerlIOMmap_unmap(f) != 0) |
2499 | code = -1; |
2500 | } |
2501 | else |
2502 | { |
2503 | /* We seem to have a PerlIOBuf buffer which was not mapped |
2504 | * remember it in case we need one later |
2505 | */ |
2506 | m->bbuf = b->buf; |
2507 | } |
2508 | } |
06da4f11 |
2509 | return code; |
2510 | } |
2511 | |
2512 | IV |
2513 | PerlIOMmap_fill(PerlIO *f) |
2514 | { |
2515 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2516 | IV code = PerlIO_flush(f); |
06da4f11 |
2517 | if (code == 0 && !b->buf) |
2518 | { |
2519 | code = PerlIOMmap_map(f); |
06da4f11 |
2520 | } |
2521 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
2522 | { |
2523 | code = PerlIOBuf_fill(f); |
06da4f11 |
2524 | } |
2525 | return code; |
2526 | } |
2527 | |
2528 | IV |
2529 | PerlIOMmap_close(PerlIO *f) |
2530 | { |
2531 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2532 | PerlIOBuf *b = &m->base; |
2533 | IV code = PerlIO_flush(f); |
2534 | if (m->bbuf) |
2535 | { |
2536 | b->buf = m->bbuf; |
2537 | m->bbuf = NULL; |
2538 | b->ptr = b->end = b->buf; |
2539 | } |
2540 | if (PerlIOBuf_close(f) != 0) |
2541 | code = -1; |
06da4f11 |
2542 | return code; |
2543 | } |
2544 | |
2545 | |
2546 | PerlIO_funcs PerlIO_mmap = { |
2547 | "mmap", |
2548 | sizeof(PerlIOMmap), |
2549 | 0, |
2550 | PerlIOBase_fileno, |
2551 | PerlIOBuf_fdopen, |
2552 | PerlIOBuf_open, |
c3d7c7c9 |
2553 | PerlIOBuf_reopen, |
06da4f11 |
2554 | PerlIOBase_pushed, |
2555 | PerlIOBase_noop_ok, |
2556 | PerlIOBuf_read, |
2557 | PerlIOMmap_unread, |
2558 | PerlIOMmap_write, |
2559 | PerlIOBuf_seek, |
2560 | PerlIOBuf_tell, |
2561 | PerlIOBuf_close, |
2562 | PerlIOMmap_flush, |
2563 | PerlIOMmap_fill, |
2564 | PerlIOBase_eof, |
2565 | PerlIOBase_error, |
2566 | PerlIOBase_clearerr, |
2567 | PerlIOBuf_setlinebuf, |
2568 | PerlIOMmap_get_base, |
2569 | PerlIOBuf_bufsiz, |
2570 | PerlIOBuf_get_ptr, |
2571 | PerlIOBuf_get_cnt, |
2572 | PerlIOBuf_set_ptrcnt, |
2573 | }; |
2574 | |
2575 | #endif /* HAS_MMAP */ |
2576 | |
9e353e3b |
2577 | void |
2578 | PerlIO_init(void) |
760ac839 |
2579 | { |
9e353e3b |
2580 | if (!_perlio) |
6f9d8c32 |
2581 | { |
9e353e3b |
2582 | atexit(&PerlIO_cleanup); |
6f9d8c32 |
2583 | } |
760ac839 |
2584 | } |
2585 | |
9e353e3b |
2586 | #undef PerlIO_stdin |
2587 | PerlIO * |
2588 | PerlIO_stdin(void) |
2589 | { |
2590 | if (!_perlio) |
f3862f8b |
2591 | PerlIO_stdstreams(); |
05d1247b |
2592 | return &_perlio[1]; |
9e353e3b |
2593 | } |
2594 | |
2595 | #undef PerlIO_stdout |
2596 | PerlIO * |
2597 | PerlIO_stdout(void) |
2598 | { |
2599 | if (!_perlio) |
f3862f8b |
2600 | PerlIO_stdstreams(); |
05d1247b |
2601 | return &_perlio[2]; |
9e353e3b |
2602 | } |
2603 | |
2604 | #undef PerlIO_stderr |
2605 | PerlIO * |
2606 | PerlIO_stderr(void) |
2607 | { |
2608 | if (!_perlio) |
f3862f8b |
2609 | PerlIO_stdstreams(); |
05d1247b |
2610 | return &_perlio[3]; |
9e353e3b |
2611 | } |
2612 | |
2613 | /*--------------------------------------------------------------------------------------*/ |
2614 | |
2615 | #undef PerlIO_getname |
2616 | char * |
2617 | PerlIO_getname(PerlIO *f, char *buf) |
2618 | { |
2619 | dTHX; |
2620 | Perl_croak(aTHX_ "Don't know how to get file name"); |
2621 | return NULL; |
2622 | } |
2623 | |
2624 | |
2625 | /*--------------------------------------------------------------------------------------*/ |
2626 | /* Functions which can be called on any kind of PerlIO implemented |
2627 | in terms of above |
2628 | */ |
2629 | |
2630 | #undef PerlIO_getc |
6f9d8c32 |
2631 | int |
9e353e3b |
2632 | PerlIO_getc(PerlIO *f) |
760ac839 |
2633 | { |
313ca112 |
2634 | STDCHAR buf[1]; |
2635 | SSize_t count = PerlIO_read(f,buf,1); |
9e353e3b |
2636 | if (count == 1) |
313ca112 |
2637 | { |
2638 | return (unsigned char) buf[0]; |
2639 | } |
2640 | return EOF; |
2641 | } |
2642 | |
2643 | #undef PerlIO_ungetc |
2644 | int |
2645 | PerlIO_ungetc(PerlIO *f, int ch) |
2646 | { |
2647 | if (ch != EOF) |
2648 | { |
2649 | STDCHAR buf = ch; |
2650 | if (PerlIO_unread(f,&buf,1) == 1) |
2651 | return ch; |
2652 | } |
2653 | return EOF; |
760ac839 |
2654 | } |
2655 | |
9e353e3b |
2656 | #undef PerlIO_putc |
2657 | int |
2658 | PerlIO_putc(PerlIO *f, int ch) |
760ac839 |
2659 | { |
9e353e3b |
2660 | STDCHAR buf = ch; |
2661 | return PerlIO_write(f,&buf,1); |
760ac839 |
2662 | } |
2663 | |
9e353e3b |
2664 | #undef PerlIO_puts |
760ac839 |
2665 | int |
9e353e3b |
2666 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 |
2667 | { |
9e353e3b |
2668 | STRLEN len = strlen(s); |
2669 | return PerlIO_write(f,s,len); |
760ac839 |
2670 | } |
2671 | |
2672 | #undef PerlIO_rewind |
2673 | void |
c78749f2 |
2674 | PerlIO_rewind(PerlIO *f) |
760ac839 |
2675 | { |
6f9d8c32 |
2676 | PerlIO_seek(f,(Off_t)0,SEEK_SET); |
9e353e3b |
2677 | PerlIO_clearerr(f); |
6f9d8c32 |
2678 | } |
2679 | |
2680 | #undef PerlIO_vprintf |
2681 | int |
2682 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) |
2683 | { |
2684 | dTHX; |
bb9950b7 |
2685 | SV *sv = newSVpvn("",0); |
6f9d8c32 |
2686 | char *s; |
2687 | STRLEN len; |
2cc61e15 |
2688 | #ifdef NEED_VA_COPY |
2689 | va_list apc; |
2690 | Perl_va_copy(ap, apc); |
2691 | sv_vcatpvf(sv, fmt, &apc); |
2692 | #else |
6f9d8c32 |
2693 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 |
2694 | #endif |
6f9d8c32 |
2695 | s = SvPV(sv,len); |
bb9950b7 |
2696 | return PerlIO_write(f,s,len); |
760ac839 |
2697 | } |
2698 | |
2699 | #undef PerlIO_printf |
6f9d8c32 |
2700 | int |
760ac839 |
2701 | PerlIO_printf(PerlIO *f,const char *fmt,...) |
760ac839 |
2702 | { |
2703 | va_list ap; |
2704 | int result; |
760ac839 |
2705 | va_start(ap,fmt); |
6f9d8c32 |
2706 | result = PerlIO_vprintf(f,fmt,ap); |
760ac839 |
2707 | va_end(ap); |
2708 | return result; |
2709 | } |
2710 | |
2711 | #undef PerlIO_stdoutf |
6f9d8c32 |
2712 | int |
760ac839 |
2713 | PerlIO_stdoutf(const char *fmt,...) |
760ac839 |
2714 | { |
2715 | va_list ap; |
2716 | int result; |
760ac839 |
2717 | va_start(ap,fmt); |
760ac839 |
2718 | result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); |
2719 | va_end(ap); |
2720 | return result; |
2721 | } |
2722 | |
2723 | #undef PerlIO_tmpfile |
2724 | PerlIO * |
c78749f2 |
2725 | PerlIO_tmpfile(void) |
760ac839 |
2726 | { |
b1ef6e3b |
2727 | /* I have no idea how portable mkstemp() is ... */ |
83b075c3 |
2728 | #if defined(WIN32) || !defined(HAVE_MKSTEMP) |
2729 | PerlIO *f = NULL; |
2730 | FILE *stdio = tmpfile(); |
2731 | if (stdio) |
2732 | { |
2733 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,"w+"),PerlIOStdio); |
2734 | s->stdio = stdio; |
2735 | } |
2736 | return f; |
2737 | #else |
2738 | dTHX; |
6f9d8c32 |
2739 | SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0); |
2740 | int fd = mkstemp(SvPVX(sv)); |
2741 | PerlIO *f = NULL; |
2742 | if (fd >= 0) |
2743 | { |
b1ef6e3b |
2744 | f = PerlIO_fdopen(fd,"w+"); |
6f9d8c32 |
2745 | if (f) |
2746 | { |
9e353e3b |
2747 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; |
6f9d8c32 |
2748 | } |
00b02797 |
2749 | PerlLIO_unlink(SvPVX(sv)); |
6f9d8c32 |
2750 | SvREFCNT_dec(sv); |
2751 | } |
2752 | return f; |
83b075c3 |
2753 | #endif |
760ac839 |
2754 | } |
2755 | |
6f9d8c32 |
2756 | #undef HAS_FSETPOS |
2757 | #undef HAS_FGETPOS |
2758 | |
760ac839 |
2759 | #endif /* USE_SFIO */ |
2760 | #endif /* PERLIO_IS_STDIO */ |
2761 | |
9e353e3b |
2762 | /*======================================================================================*/ |
2763 | /* Now some functions in terms of above which may be needed even if |
2764 | we are not in true PerlIO mode |
2765 | */ |
2766 | |
760ac839 |
2767 | #ifndef HAS_FSETPOS |
2768 | #undef PerlIO_setpos |
2769 | int |
c78749f2 |
2770 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
760ac839 |
2771 | { |
6f9d8c32 |
2772 | return PerlIO_seek(f,*pos,0); |
760ac839 |
2773 | } |
c411622e |
2774 | #else |
2775 | #ifndef PERLIO_IS_STDIO |
2776 | #undef PerlIO_setpos |
2777 | int |
c78749f2 |
2778 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
c411622e |
2779 | { |
2d4389e4 |
2780 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
2781 | return fsetpos64(f, pos); |
2782 | #else |
c411622e |
2783 | return fsetpos(f, pos); |
d9b3e12d |
2784 | #endif |
c411622e |
2785 | } |
2786 | #endif |
760ac839 |
2787 | #endif |
2788 | |
2789 | #ifndef HAS_FGETPOS |
2790 | #undef PerlIO_getpos |
2791 | int |
c78749f2 |
2792 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
760ac839 |
2793 | { |
2794 | *pos = PerlIO_tell(f); |
a17c7222 |
2795 | return *pos == -1 ? -1 : 0; |
760ac839 |
2796 | } |
c411622e |
2797 | #else |
2798 | #ifndef PERLIO_IS_STDIO |
2799 | #undef PerlIO_getpos |
2800 | int |
c78749f2 |
2801 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
c411622e |
2802 | { |
2d4389e4 |
2803 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
2804 | return fgetpos64(f, pos); |
2805 | #else |
c411622e |
2806 | return fgetpos(f, pos); |
d9b3e12d |
2807 | #endif |
c411622e |
2808 | } |
2809 | #endif |
760ac839 |
2810 | #endif |
2811 | |
2812 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) |
2813 | |
2814 | int |
c78749f2 |
2815 | vprintf(char *pat, char *args) |
662a7e3f |
2816 | { |
2817 | _doprnt(pat, args, stdout); |
2818 | return 0; /* wrong, but perl doesn't use the return value */ |
2819 | } |
2820 | |
2821 | int |
c78749f2 |
2822 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 |
2823 | { |
2824 | _doprnt(pat, args, fd); |
2825 | return 0; /* wrong, but perl doesn't use the return value */ |
2826 | } |
2827 | |
2828 | #endif |
2829 | |
2830 | #ifndef PerlIO_vsprintf |
6f9d8c32 |
2831 | int |
8ac85365 |
2832 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 |
2833 | { |
2834 | int val = vsprintf(s, fmt, ap); |
2835 | if (n >= 0) |
2836 | { |
8c86a920 |
2837 | if (strlen(s) >= (STRLEN)n) |
760ac839 |
2838 | { |
bf49b057 |
2839 | dTHX; |
fb4a9925 |
2840 | (void)PerlIO_puts(Perl_error_log, |
2841 | "panic: sprintf overflow - memory corrupted!\n"); |
bf49b057 |
2842 | my_exit(1); |
760ac839 |
2843 | } |
2844 | } |
2845 | return val; |
2846 | } |
2847 | #endif |
2848 | |
2849 | #ifndef PerlIO_sprintf |
6f9d8c32 |
2850 | int |
760ac839 |
2851 | PerlIO_sprintf(char *s, int n, const char *fmt,...) |
760ac839 |
2852 | { |
2853 | va_list ap; |
2854 | int result; |
760ac839 |
2855 | va_start(ap,fmt); |
760ac839 |
2856 | result = PerlIO_vsprintf(s, n, fmt, ap); |
2857 | va_end(ap); |
2858 | return result; |
2859 | } |
2860 | #endif |
2861 | |
c5be433b |
2862 | #endif /* !PERL_IMPLICIT_SYS */ |
2863 | |