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