Commit | Line | Data |
---|---|---|
760ac839 LW |
1 | /* perlio.c |
2 | * | |
26fb694e | 3 | * Copyright (c) 1996-2001, Nick Ing-Simmons |
760ac839 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
8 | */ | |
9 | ||
10 | #define VOIDUSED 1 | |
12ae5dfc JH |
11 | #ifdef PERL_MICRO |
12 | # include "uconfig.h" | |
13 | #else | |
14 | # include "config.h" | |
15 | #endif | |
760ac839 | 16 | |
6f9d8c32 | 17 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 18 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
6f9d8c32 | 19 | /* #define PerlIO FILE */ |
760ac839 LW |
20 | #endif |
21 | /* | |
6f9d8c32 | 22 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 23 | * which are not #defined in perlio.h. |
6f9d8c32 | 24 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
25 | */ |
26 | ||
27 | #include "EXTERN.h" | |
864dbfa3 | 28 | #define PERL_IN_PERLIO_C |
760ac839 LW |
29 | #include "perl.h" |
30 | ||
5f1a76d0 NIS |
31 | #undef PerlMemShared_calloc |
32 | #define PerlMemShared_calloc(x,y) calloc(x,y) | |
33 | #undef PerlMemShared_free | |
34 | #define PerlMemShared_free(x) free(x) | |
35 | ||
60382766 | 36 | int |
f5b9d040 | 37 | perlsio_binmode(FILE *fp, int iotype, int mode) |
60382766 NIS |
38 | { |
39 | /* This used to be contents of do_binmode in doio.c */ | |
40 | #ifdef DOSISH | |
41 | # if defined(atarist) || defined(__MINT__) | |
f5b9d040 | 42 | if (!fflush(fp)) { |
60382766 NIS |
43 | if (mode & O_BINARY) |
44 | ((FILE*)fp)->_flag |= _IOBIN; | |
45 | else | |
46 | ((FILE*)fp)->_flag &= ~ _IOBIN; | |
47 | return 1; | |
48 | } | |
49 | return 0; | |
50 | # else | |
eb73beca | 51 | dTHX; |
f5b9d040 | 52 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { |
60382766 NIS |
53 | # if defined(WIN32) && defined(__BORLANDC__) |
54 | /* The translation mode of the stream is maintained independent | |
55 | * of the translation mode of the fd in the Borland RTL (heavy | |
56 | * digging through their runtime sources reveal). User has to | |
57 | * set the mode explicitly for the stream (though they don't | |
58 | * document this anywhere). GSAR 97-5-24 | |
59 | */ | |
f5b9d040 | 60 | fseek(fp,0L,0); |
60382766 | 61 | if (mode & O_BINARY) |
f5b9d040 | 62 | fp->flags |= _F_BIN; |
60382766 | 63 | else |
f5b9d040 | 64 | fp->flags &= ~ _F_BIN; |
60382766 NIS |
65 | # endif |
66 | return 1; | |
67 | } | |
68 | else | |
69 | return 0; | |
70 | # endif | |
71 | #else | |
72 | # if defined(USEMYBINMODE) | |
73 | if (my_binmode(fp, iotype, mode) != FALSE) | |
74 | return 1; | |
75 | else | |
76 | return 0; | |
77 | # else | |
78 | return 1; | |
79 | # endif | |
80 | #endif | |
81 | } | |
82 | ||
eb73beca NIS |
83 | #ifndef PERLIO_LAYERS |
84 | int | |
85 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
86 | { | |
87 | if (!names || !*names || strEQ(names,":crlf") || strEQ(names,":raw")) | |
88 | { | |
89 | return 0; | |
90 | } | |
91 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl",names); | |
92 | /* NOTREACHED */ | |
93 | return -1; | |
94 | } | |
95 | ||
f5b9d040 NIS |
96 | int |
97 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
98 | { | |
99 | return perlsio_binmode(fp,iotype,mode); | |
100 | } | |
60382766 | 101 | |
ee518936 NIS |
102 | /* De-mux PerlIO_openn() into fdopen, freopen and fopen type entries */ |
103 | ||
104 | PerlIO * | |
105 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args) | |
106 | { | |
107 | if (narg == 1) | |
108 | { | |
f6c77cf1 NIS |
109 | if (*args == &PL_sv_undef) |
110 | return PerlIO_tmpfile(); | |
ee518936 NIS |
111 | else |
112 | { | |
f6c77cf1 NIS |
113 | char *name = SvPV_nolen(*args); |
114 | if (*mode == '#') | |
115 | { | |
116 | fd = PerlLIO_open3(name,imode,perm); | |
117 | if (fd >= 0) | |
118 | return PerlIO_fdopen(fd,mode+1); | |
119 | } | |
120 | else if (old) | |
121 | { | |
122 | return PerlIO_reopen(name,mode,old); | |
123 | } | |
124 | else | |
125 | { | |
126 | return PerlIO_open(name,mode); | |
127 | } | |
ee518936 NIS |
128 | } |
129 | } | |
130 | else | |
131 | { | |
132 | return PerlIO_fdopen(fd,mode); | |
133 | } | |
134 | return NULL; | |
135 | } | |
136 | ||
ac27b0f5 NIS |
137 | #endif |
138 | ||
32e30700 | 139 | |
6f9d8c32 | 140 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
141 | |
142 | void | |
8ac85365 | 143 | PerlIO_init(void) |
760ac839 | 144 | { |
6f9d8c32 | 145 | /* Does nothing (yet) except force this file to be included |
760ac839 | 146 | in perl binary. That allows this file to force inclusion |
6f9d8c32 NIS |
147 | of other functions that may be required by loadable |
148 | extensions e.g. for FileHandle::tmpfile | |
760ac839 LW |
149 | */ |
150 | } | |
151 | ||
33dcbb9a | 152 | #undef PerlIO_tmpfile |
153 | PerlIO * | |
8ac85365 | 154 | PerlIO_tmpfile(void) |
33dcbb9a | 155 | { |
156 | return tmpfile(); | |
157 | } | |
158 | ||
760ac839 LW |
159 | #else /* PERLIO_IS_STDIO */ |
160 | ||
161 | #ifdef USE_SFIO | |
162 | ||
163 | #undef HAS_FSETPOS | |
164 | #undef HAS_FGETPOS | |
165 | ||
6f9d8c32 | 166 | /* This section is just to make sure these functions |
760ac839 LW |
167 | get pulled in from libsfio.a |
168 | */ | |
169 | ||
170 | #undef PerlIO_tmpfile | |
171 | PerlIO * | |
c78749f2 | 172 | PerlIO_tmpfile(void) |
760ac839 LW |
173 | { |
174 | return sftmp(0); | |
175 | } | |
176 | ||
177 | void | |
c78749f2 | 178 | PerlIO_init(void) |
760ac839 | 179 | { |
6f9d8c32 NIS |
180 | /* Force this file to be included in perl binary. Which allows |
181 | * this file to force inclusion of other functions that may be | |
182 | * required by loadable extensions e.g. for FileHandle::tmpfile | |
760ac839 LW |
183 | */ |
184 | ||
185 | /* Hack | |
186 | * sfio does its own 'autoflush' on stdout in common cases. | |
6f9d8c32 | 187 | * Flush results in a lot of lseek()s to regular files and |
760ac839 LW |
188 | * lot of small writes to pipes. |
189 | */ | |
190 | sfset(sfstdout,SF_SHARE,0); | |
191 | } | |
192 | ||
17c3b450 | 193 | #else /* USE_SFIO */ |
6f9d8c32 | 194 | /*======================================================================================*/ |
6f9d8c32 | 195 | /* Implement all the PerlIO interface ourselves. |
9e353e3b | 196 | */ |
760ac839 | 197 | |
76ced9ad NIS |
198 | #include "perliol.h" |
199 | ||
b1ef6e3b | 200 | /* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */ |
02f66e2f NIS |
201 | #ifdef I_UNISTD |
202 | #include <unistd.h> | |
203 | #endif | |
06da4f11 NIS |
204 | #ifdef HAS_MMAP |
205 | #include <sys/mman.h> | |
206 | #endif | |
207 | ||
f3862f8b | 208 | #include "XSUB.h" |
02f66e2f | 209 | |
88b61e10 | 210 | void PerlIO_debug(const char *fmt,...) __attribute__((format(__printf__,1,2))); |
6f9d8c32 | 211 | |
6f9d8c32 | 212 | void |
88b61e10 | 213 | PerlIO_debug(const char *fmt,...) |
6f9d8c32 | 214 | { |
adb71456 | 215 | dTHX; |
6f9d8c32 | 216 | static int dbg = 0; |
88b61e10 NIS |
217 | va_list ap; |
218 | va_start(ap,fmt); | |
6f9d8c32 NIS |
219 | if (!dbg) |
220 | { | |
00b02797 | 221 | char *s = PerlEnv_getenv("PERLIO_DEBUG"); |
6f9d8c32 | 222 | if (s && *s) |
00b02797 | 223 | dbg = PerlLIO_open3(s,O_WRONLY|O_CREAT|O_APPEND,0666); |
6f9d8c32 NIS |
224 | else |
225 | dbg = -1; | |
226 | } | |
227 | if (dbg > 0) | |
228 | { | |
229 | dTHX; | |
6f9d8c32 NIS |
230 | SV *sv = newSVpvn("",0); |
231 | char *s; | |
232 | STRLEN len; | |
05d1247b NIS |
233 | s = CopFILE(PL_curcop); |
234 | if (!s) | |
235 | s = "(none)"; | |
236 | Perl_sv_catpvf(aTHX_ sv, "%s:%"IVdf" ", s, (IV)CopLINE(PL_curcop)); | |
c7fc522f NIS |
237 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
238 | ||
6f9d8c32 | 239 | s = SvPV(sv,len); |
00b02797 | 240 | PerlLIO_write(dbg,s,len); |
6f9d8c32 NIS |
241 | SvREFCNT_dec(sv); |
242 | } | |
88b61e10 | 243 | va_end(ap); |
6f9d8c32 NIS |
244 | } |
245 | ||
9e353e3b NIS |
246 | /*--------------------------------------------------------------------------------------*/ |
247 | ||
9e353e3b NIS |
248 | /* Inner level routines */ |
249 | ||
b1ef6e3b | 250 | /* Table of pointers to the PerlIO structs (malloc'ed) */ |
05d1247b NIS |
251 | PerlIO *_perlio = NULL; |
252 | #define PERLIO_TABLE_SIZE 64 | |
6f9d8c32 | 253 | |
e3f3bf95 NIS |
254 | |
255 | ||
760ac839 | 256 | PerlIO * |
5f1a76d0 | 257 | PerlIO_allocate(pTHX) |
6f9d8c32 | 258 | { |
f3862f8b | 259 | /* Find a free slot in the table, allocating new table as necessary */ |
5f1a76d0 | 260 | PerlIO **last; |
6f9d8c32 | 261 | PerlIO *f; |
5f1a76d0 | 262 | last = &_perlio; |
05d1247b | 263 | while ((f = *last)) |
6f9d8c32 | 264 | { |
05d1247b NIS |
265 | int i; |
266 | last = (PerlIO **)(f); | |
267 | for (i=1; i < PERLIO_TABLE_SIZE; i++) | |
6f9d8c32 | 268 | { |
05d1247b | 269 | if (!*++f) |
6f9d8c32 | 270 | { |
6f9d8c32 NIS |
271 | return f; |
272 | } | |
6f9d8c32 | 273 | } |
6f9d8c32 | 274 | } |
5f1a76d0 | 275 | f = PerlMemShared_calloc(PERLIO_TABLE_SIZE,sizeof(PerlIO)); |
05d1247b | 276 | if (!f) |
5f1a76d0 NIS |
277 | { |
278 | return NULL; | |
766a733e | 279 | } |
05d1247b NIS |
280 | *last = f; |
281 | return f+1; | |
282 | } | |
283 | ||
284 | void | |
5f1a76d0 | 285 | PerlIO_cleantable(pTHX_ PerlIO **tablep) |
05d1247b NIS |
286 | { |
287 | PerlIO *table = *tablep; | |
288 | if (table) | |
289 | { | |
290 | int i; | |
5f1a76d0 | 291 | PerlIO_cleantable(aTHX_ (PerlIO **) &(table[0])); |
05d1247b NIS |
292 | for (i=PERLIO_TABLE_SIZE-1; i > 0; i--) |
293 | { | |
294 | PerlIO *f = table+i; | |
60382766 | 295 | if (*f) |
3789aae2 NIS |
296 | { |
297 | PerlIO_close(f); | |
298 | } | |
05d1247b | 299 | } |
5f1a76d0 | 300 | PerlMemShared_free(table); |
05d1247b NIS |
301 | *tablep = NULL; |
302 | } | |
303 | } | |
304 | ||
4a4a6116 NIS |
305 | HV *PerlIO_layer_hv; |
306 | AV *PerlIO_layer_av; | |
307 | ||
05d1247b | 308 | void |
5f1a76d0 | 309 | PerlIO_cleanup() |
05d1247b | 310 | { |
5f1a76d0 NIS |
311 | dTHX; |
312 | PerlIO_cleantable(aTHX_ &_perlio); | |
6f9d8c32 NIS |
313 | } |
314 | ||
9e353e3b | 315 | void |
a999f61b | 316 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 317 | { |
9e353e3b NIS |
318 | PerlIOl *l = *f; |
319 | if (l) | |
6f9d8c32 | 320 | { |
86295796 | 321 | PerlIO_debug("PerlIO_pop f=%p %s\n",f,l->tab->name); |
26fb694e NIS |
322 | if (l->tab->Popped) |
323 | (*l->tab->Popped)(f); | |
9e353e3b | 324 | *f = l->next; |
5f1a76d0 | 325 | PerlMemShared_free(l); |
6f9d8c32 | 326 | } |
6f9d8c32 NIS |
327 | } |
328 | ||
9e353e3b | 329 | /*--------------------------------------------------------------------------------------*/ |
b931b1d9 | 330 | /* XS Interface for perl code */ |
9e353e3b | 331 | |
b931b1d9 | 332 | XS(XS_perlio_import) |
f3862f8b NIS |
333 | { |
334 | dXSARGS; | |
335 | GV *gv = CvGV(cv); | |
336 | char *s = GvNAME(gv); | |
337 | STRLEN l = GvNAMELEN(gv); | |
338 | PerlIO_debug("%.*s\n",(int) l,s); | |
339 | XSRETURN_EMPTY; | |
340 | } | |
341 | ||
b931b1d9 | 342 | XS(XS_perlio_unimport) |
f3862f8b NIS |
343 | { |
344 | dXSARGS; | |
345 | GV *gv = CvGV(cv); | |
346 | char *s = GvNAME(gv); | |
347 | STRLEN l = GvNAMELEN(gv); | |
348 | PerlIO_debug("%.*s\n",(int) l,s); | |
349 | XSRETURN_EMPTY; | |
350 | } | |
351 | ||
f3862f8b | 352 | SV * |
a999f61b | 353 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len) |
f3862f8b | 354 | { |
f3862f8b NIS |
355 | SV **svp; |
356 | SV *sv; | |
766a733e | 357 | if ((SSize_t) len <= 0) |
f3862f8b NIS |
358 | len = strlen(name); |
359 | svp = hv_fetch(PerlIO_layer_hv,name,len,0); | |
1141d9f8 NIS |
360 | if (!svp && PL_subname && PerlIO_layer_av && av_len(PerlIO_layer_av)+1 >= 2) |
361 | { | |
362 | SV *pkgsv = newSVpvn("PerlIO",6); | |
363 | SV *layer = newSVpvn(name,len); | |
364 | ENTER; | |
365 | /* The two SVs are magically freed by load_module */ | |
366 | Perl_load_module(aTHX_ 0, pkgsv, Nullsv, layer, Nullsv); | |
367 | LEAVE; | |
368 | /* Say this is lvalue so we get an 'undef' if still not there */ | |
369 | svp = hv_fetch(PerlIO_layer_hv,name,len,1); | |
370 | } | |
371 | if (svp && (sv = *svp)) | |
372 | { | |
373 | if (SvROK(sv)) | |
374 | return *svp; | |
375 | } | |
f3862f8b NIS |
376 | return NULL; |
377 | } | |
378 | ||
b13b2135 NIS |
379 | |
380 | static int | |
381 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
382 | { | |
383 | if (SvROK(sv)) | |
384 | { | |
b931b1d9 | 385 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 NIS |
386 | PerlIO *ifp = IoIFP(io); |
387 | PerlIO *ofp = IoOFP(io); | |
388 | AV *av = (AV *) mg->mg_obj; | |
4659c93f | 389 | Perl_warn(aTHX_ "set %"SVf" %p %p %p",sv,io,ifp,ofp); |
b13b2135 NIS |
390 | } |
391 | return 0; | |
392 | } | |
393 | ||
394 | static int | |
395 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
396 | { | |
397 | if (SvROK(sv)) | |
398 | { | |
b931b1d9 | 399 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 NIS |
400 | PerlIO *ifp = IoIFP(io); |
401 | PerlIO *ofp = IoOFP(io); | |
402 | AV *av = (AV *) mg->mg_obj; | |
4659c93f | 403 | Perl_warn(aTHX_ "get %"SVf" %p %p %p",sv,io,ifp,ofp); |
b13b2135 NIS |
404 | } |
405 | return 0; | |
406 | } | |
407 | ||
408 | static int | |
409 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
410 | { | |
4659c93f | 411 | Perl_warn(aTHX_ "clear %"SVf,sv); |
b13b2135 NIS |
412 | return 0; |
413 | } | |
414 | ||
415 | static int | |
416 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
417 | { | |
4659c93f | 418 | Perl_warn(aTHX_ "free %"SVf,sv); |
b13b2135 NIS |
419 | return 0; |
420 | } | |
421 | ||
422 | MGVTBL perlio_vtab = { | |
423 | perlio_mg_get, | |
424 | perlio_mg_set, | |
425 | NULL, /* len */ | |
426 | NULL, | |
427 | perlio_mg_free | |
428 | }; | |
429 | ||
430 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
431 | { | |
432 | dXSARGS; | |
433 | SV *sv = SvRV(ST(1)); | |
434 | AV *av = newAV(); | |
435 | MAGIC *mg; | |
436 | int count = 0; | |
437 | int i; | |
438 | sv_magic(sv, (SV *)av, '~', NULL, 0); | |
439 | SvRMAGICAL_off(sv); | |
440 | mg = mg_find(sv,'~'); | |
441 | mg->mg_virtual = &perlio_vtab; | |
442 | mg_magical(sv); | |
4659c93f | 443 | Perl_warn(aTHX_ "attrib %"SVf,sv); |
b13b2135 NIS |
444 | for (i=2; i < items; i++) |
445 | { | |
446 | STRLEN len; | |
ac27b0f5 | 447 | const char *name = SvPV(ST(i),len); |
a999f61b | 448 | SV *layer = PerlIO_find_layer(aTHX_ name,len); |
b13b2135 NIS |
449 | if (layer) |
450 | { | |
451 | av_push(av,SvREFCNT_inc(layer)); | |
452 | } | |
453 | else | |
454 | { | |
455 | ST(count) = ST(i); | |
456 | count++; | |
457 | } | |
458 | } | |
459 | SvREFCNT_dec(av); | |
460 | XSRETURN(count); | |
461 | } | |
462 | ||
e3f3bf95 NIS |
463 | SV * |
464 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 465 | { |
b931b1d9 | 466 | HV *stash = gv_stashpv("perlio::Layer", TRUE); |
e7778b43 | 467 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash); |
e3f3bf95 NIS |
468 | return sv; |
469 | } | |
470 | ||
471 | void | |
472 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
473 | { | |
26fb694e NIS |
474 | if (!PerlIO_layer_hv) |
475 | { | |
476 | PerlIO_layer_hv = get_hv("open::layers",GV_ADD|GV_ADDMULTI); | |
477 | } | |
e3f3bf95 | 478 | hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),PerlIO_tab_sv(aTHX_ tab),0); |
dfebf958 | 479 | PerlIO_debug("define %s %p\n",tab->name,tab); |
f3862f8b NIS |
480 | } |
481 | ||
1141d9f8 NIS |
482 | int |
483 | PerlIO_parse_layers(pTHX_ AV *av, const char *names) | |
484 | { | |
485 | if (names) | |
486 | { | |
487 | const char *s = names; | |
488 | while (*s) | |
489 | { | |
490 | while (isSPACE(*s) || *s == ':') | |
491 | s++; | |
492 | if (*s) | |
493 | { | |
494 | STRLEN llen = 0; | |
495 | const char *e = s; | |
496 | const char *as = Nullch; | |
497 | STRLEN alen = 0; | |
498 | if (!isIDFIRST(*s)) | |
499 | { | |
500 | /* Message is consistent with how attribute lists are passed. | |
501 | Even though this means "foo : : bar" is seen as an invalid separator | |
502 | character. */ | |
503 | char q = ((*s == '\'') ? '"' : '\''); | |
504 | Perl_warn(aTHX_ "perlio: invalid separator character %c%c%c in layer specification list", q, *s, q); | |
505 | return -1; | |
506 | } | |
507 | do | |
508 | { | |
509 | e++; | |
510 | } while (isALNUM(*e)); | |
511 | llen = e-s; | |
512 | if (*e == '(') | |
513 | { | |
514 | int nesting = 1; | |
515 | as = ++e; | |
516 | while (nesting) | |
517 | { | |
518 | switch (*e++) | |
519 | { | |
520 | case ')': | |
521 | if (--nesting == 0) | |
522 | alen = (e-1)-as; | |
523 | break; | |
524 | case '(': | |
525 | ++nesting; | |
526 | break; | |
527 | case '\\': | |
528 | /* It's a nul terminated string, not allowed to \ the terminating null. | |
529 | Anything other character is passed over. */ | |
530 | if (*e++) | |
531 | { | |
532 | break; | |
533 | } | |
534 | /* Drop through */ | |
535 | case '\0': | |
536 | e--; | |
537 | Perl_warn(aTHX_ "perlio: argument list not closed for layer \"%.*s\"",(int)(e - s),s); | |
538 | return -1; | |
539 | default: | |
540 | /* boring. */ | |
541 | break; | |
542 | } | |
543 | } | |
544 | } | |
545 | if (e > s) | |
546 | { | |
547 | SV *layer = PerlIO_find_layer(aTHX_ s,llen); | |
548 | if (layer) | |
549 | { | |
550 | av_push(av,SvREFCNT_inc(layer)); | |
551 | av_push(av,(as) ? newSVpvn(as,alen) : &PL_sv_undef); | |
552 | } | |
553 | else { | |
554 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(int)llen,s); | |
555 | return -1; | |
556 | } | |
557 | } | |
558 | s = e; | |
559 | } | |
560 | } | |
561 | } | |
562 | return 0; | |
563 | } | |
564 | ||
dfebf958 | 565 | void |
1141d9f8 | 566 | PerlIO_default_buffer(pTHX_ AV *av) |
dfebf958 NIS |
567 | { |
568 | PerlIO_funcs *tab = &PerlIO_perlio; | |
569 | if (O_BINARY != O_TEXT) | |
570 | { | |
571 | tab = &PerlIO_crlf; | |
572 | } | |
573 | else | |
574 | { | |
575 | if (PerlIO_stdio.Set_ptrcnt) | |
576 | { | |
577 | tab = &PerlIO_stdio; | |
578 | } | |
579 | } | |
580 | PerlIO_debug("Pushing %s\n",tab->name); | |
1141d9f8 NIS |
581 | av_push(av,SvREFCNT_inc(PerlIO_find_layer(aTHX_ tab->name,0))); |
582 | av_push(av,&PL_sv_undef); | |
dfebf958 NIS |
583 | } |
584 | ||
e3f3bf95 NIS |
585 | SV * |
586 | PerlIO_arg_fetch(pTHX_ AV *av,IV n) | |
587 | { | |
588 | SV **svp = av_fetch(av,n,FALSE); | |
589 | return (svp) ? *svp : Nullsv; | |
590 | } | |
591 | ||
f3862f8b | 592 | PerlIO_funcs * |
e3f3bf95 | 593 | PerlIO_layer_fetch(pTHX_ AV *av,IV n,PerlIO_funcs *def) |
f3862f8b | 594 | { |
e3f3bf95 | 595 | SV **svp = av_fetch(av,n,FALSE); |
f3862f8b | 596 | SV *layer; |
e3f3bf95 NIS |
597 | if (svp && (layer = *svp) && SvROK(layer) && SvIOK((layer = SvRV(layer)))) |
598 | { | |
599 | /* PerlIO_debug("Layer %d is %s\n",n/2,tab->name); */ | |
600 | return INT2PTR(PerlIO_funcs *, SvIV(layer)); | |
601 | } | |
602 | if (!def) | |
f6c77cf1 | 603 | Perl_croak(aTHX_ "panic:PerlIO layer array corrupt"); |
e3f3bf95 NIS |
604 | return def; |
605 | } | |
606 | ||
607 | AV * | |
608 | PerlIO_default_layers(pTHX) | |
609 | { | |
610 | IV len; | |
26fb694e | 611 | if (!PerlIO_layer_av) |
f3862f8b | 612 | { |
1141d9f8 | 613 | const char *s = (PL_tainting) ? Nullch : PerlEnv_getenv("PERLIO"); |
26fb694e | 614 | PerlIO_layer_av = get_av("open::layers",GV_ADD|GV_ADDMULTI); |
b931b1d9 NIS |
615 | newXS("perlio::import",XS_perlio_import,__FILE__); |
616 | newXS("perlio::unimport",XS_perlio_unimport,__FILE__); | |
617 | #if 0 | |
b13b2135 | 618 | newXS("io::MODIFY_SCALAR_ATTRIBUTES",XS_io_MODIFY_SCALAR_ATTRIBUTES,__FILE__); |
b931b1d9 | 619 | #endif |
a999f61b NIS |
620 | PerlIO_define_layer(aTHX_ &PerlIO_raw); |
621 | PerlIO_define_layer(aTHX_ &PerlIO_unix); | |
622 | PerlIO_define_layer(aTHX_ &PerlIO_perlio); | |
623 | PerlIO_define_layer(aTHX_ &PerlIO_stdio); | |
624 | PerlIO_define_layer(aTHX_ &PerlIO_crlf); | |
06da4f11 | 625 | #ifdef HAS_MMAP |
a999f61b | 626 | PerlIO_define_layer(aTHX_ &PerlIO_mmap); |
06da4f11 | 627 | #endif |
a999f61b NIS |
628 | PerlIO_define_layer(aTHX_ &PerlIO_utf8); |
629 | PerlIO_define_layer(aTHX_ &PerlIO_byte); | |
630 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(aTHX_ PerlIO_unix.name,0))); | |
1141d9f8 | 631 | av_push(PerlIO_layer_av,&PL_sv_undef); |
f3862f8b NIS |
632 | if (s) |
633 | { | |
1141d9f8 NIS |
634 | PerlIO_parse_layers(aTHX_ PerlIO_layer_av,s); |
635 | } | |
636 | else | |
637 | { | |
638 | PerlIO_default_buffer(aTHX_ PerlIO_layer_av); | |
f3862f8b NIS |
639 | } |
640 | } | |
1141d9f8 NIS |
641 | len = av_len(PerlIO_layer_av)+1; |
642 | if (len < 2) | |
f3862f8b | 643 | { |
1141d9f8 | 644 | PerlIO_default_buffer(aTHX_ PerlIO_layer_av); |
f3862f8b NIS |
645 | len = av_len(PerlIO_layer_av); |
646 | } | |
e3f3bf95 NIS |
647 | return PerlIO_layer_av; |
648 | } | |
649 | ||
650 | ||
651 | PerlIO_funcs * | |
652 | PerlIO_default_layer(pTHX_ I32 n) | |
653 | { | |
654 | AV *av = PerlIO_default_layers(aTHX); | |
1141d9f8 | 655 | n *= 2; |
f3862f8b | 656 | if (n < 0) |
e3f3bf95 NIS |
657 | n += av_len(PerlIO_layer_av)+1; |
658 | return PerlIO_layer_fetch(aTHX_ av,n, &PerlIO_stdio); | |
f3862f8b NIS |
659 | } |
660 | ||
a999f61b NIS |
661 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
662 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
663 | |
664 | void | |
1141d9f8 | 665 | PerlIO_stdstreams(pTHX) |
60382766 NIS |
666 | { |
667 | if (!_perlio) | |
668 | { | |
5f1a76d0 | 669 | PerlIO_allocate(aTHX); |
f5b9d040 NIS |
670 | PerlIO_fdopen(0,"Ir" PERLIO_STDTEXT); |
671 | PerlIO_fdopen(1,"Iw" PERLIO_STDTEXT); | |
672 | PerlIO_fdopen(2,"Iw" PERLIO_STDTEXT); | |
60382766 NIS |
673 | } |
674 | } | |
675 | ||
676 | PerlIO * | |
e3f3bf95 | 677 | PerlIO_push(pTHX_ PerlIO *f,PerlIO_funcs *tab,const char *mode,SV *arg) |
60382766 NIS |
678 | { |
679 | PerlIOl *l = NULL; | |
5f1a76d0 | 680 | l = PerlMemShared_calloc(tab->size,sizeof(char)); |
60382766 NIS |
681 | if (l) |
682 | { | |
683 | Zero(l,tab->size,char); | |
684 | l->next = *f; | |
685 | l->tab = tab; | |
686 | *f = l; | |
8c0134a8 NIS |
687 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n",f,tab->name, |
688 | (mode) ? mode : "(Null)",arg); | |
e3f3bf95 | 689 | if ((*l->tab->Pushed)(f,mode,arg) != 0) |
60382766 | 690 | { |
a999f61b | 691 | PerlIO_pop(aTHX_ f); |
60382766 NIS |
692 | return NULL; |
693 | } | |
694 | } | |
695 | return f; | |
696 | } | |
697 | ||
dfebf958 | 698 | IV |
e3f3bf95 | 699 | PerlIOPop_pushed(PerlIO *f, const char *mode, SV *arg) |
4b803d04 | 700 | { |
a999f61b NIS |
701 | dTHX; |
702 | PerlIO_pop(aTHX_ f); | |
4b803d04 NIS |
703 | if (*f) |
704 | { | |
705 | PerlIO_flush(f); | |
a999f61b | 706 | PerlIO_pop(aTHX_ f); |
4b803d04 NIS |
707 | return 0; |
708 | } | |
709 | return -1; | |
710 | } | |
711 | ||
712 | IV | |
e3f3bf95 | 713 | PerlIORaw_pushed(PerlIO *f, const char *mode, SV *arg) |
dfebf958 | 714 | { |
4b803d04 | 715 | /* Remove the dummy layer */ |
a999f61b NIS |
716 | dTHX; |
717 | PerlIO_pop(aTHX_ f); | |
dfebf958 | 718 | /* Pop back to bottom layer */ |
4b803d04 | 719 | if (f && *f) |
dfebf958 | 720 | { |
4b803d04 NIS |
721 | int code = 0; |
722 | PerlIO_flush(f); | |
723 | while (!(PerlIOBase(f)->tab->kind & PERLIO_K_RAW)) | |
dfebf958 | 724 | { |
4b803d04 NIS |
725 | if (*PerlIONext(f)) |
726 | { | |
a999f61b | 727 | PerlIO_pop(aTHX_ f); |
4b803d04 NIS |
728 | } |
729 | else | |
730 | { | |
731 | /* Nothing bellow - push unix on top then remove it */ | |
e3f3bf95 | 732 | if (PerlIO_push(aTHX_ f,PerlIO_default_btm(),mode,arg)) |
4b803d04 | 733 | { |
a999f61b | 734 | PerlIO_pop(aTHX_ PerlIONext(f)); |
4b803d04 NIS |
735 | } |
736 | break; | |
737 | } | |
dfebf958 | 738 | } |
26fb694e | 739 | PerlIO_debug(":raw f=%p :%s\n",f,PerlIOBase(f)->tab->name); |
dfebf958 NIS |
740 | return 0; |
741 | } | |
742 | return -1; | |
743 | } | |
744 | ||
ac27b0f5 | 745 | int |
e3f3bf95 NIS |
746 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, AV *layers, IV n) |
747 | { | |
748 | IV max = av_len(layers)+1; | |
749 | int code = 0; | |
750 | while (n < max) | |
751 | { | |
752 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers,n,NULL); | |
753 | if (tab) | |
754 | { | |
f6c77cf1 | 755 | if (!PerlIO_push(aTHX_ f,tab,mode,PerlIOArg)) |
e3f3bf95 | 756 | { |
8c0134a8 | 757 | code = -1; |
e3f3bf95 NIS |
758 | break; |
759 | } | |
760 | } | |
761 | n += 2; | |
762 | } | |
763 | return code; | |
764 | } | |
765 | ||
766 | int | |
ac27b0f5 NIS |
767 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
768 | { | |
1141d9f8 | 769 | int code = 0; |
ac27b0f5 NIS |
770 | if (names) |
771 | { | |
1141d9f8 NIS |
772 | AV *layers = newAV(); |
773 | code = PerlIO_parse_layers(aTHX_ layers,names); | |
774 | if (code == 0) | |
ac27b0f5 | 775 | { |
e3f3bf95 | 776 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0); |
ac27b0f5 | 777 | } |
1141d9f8 | 778 | SvREFCNT_dec((SV *) layers); |
ac27b0f5 | 779 | } |
1141d9f8 | 780 | return code; |
ac27b0f5 NIS |
781 | } |
782 | ||
f3862f8b | 783 | |
60382766 NIS |
784 | /*--------------------------------------------------------------------------------------*/ |
785 | /* Given the abstraction above the public API functions */ | |
786 | ||
787 | int | |
f5b9d040 | 788 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 789 | { |
86295796 | 790 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", |
a4d3c1d3 | 791 | f,PerlIOBase(f)->tab->name,iotype,mode, (names) ? names : "(Null)"); |
33af2bc7 | 792 | if (!names && (O_TEXT != O_BINARY && (mode & O_BINARY))) |
76ced9ad | 793 | { |
f5b9d040 | 794 | PerlIO *top = f; |
60382766 NIS |
795 | PerlIOl *l; |
796 | while (l = *top) | |
76ced9ad | 797 | { |
60382766 NIS |
798 | if (PerlIOBase(top)->tab == &PerlIO_crlf) |
799 | { | |
800 | PerlIO_flush(top); | |
a4d3c1d3 | 801 | PerlIOBase(top)->flags &= ~PERLIO_F_CRLF; |
60382766 NIS |
802 | break; |
803 | } | |
804 | top = PerlIONext(top); | |
76ced9ad NIS |
805 | } |
806 | } | |
f5b9d040 NIS |
807 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; |
808 | } | |
809 | ||
810 | #undef PerlIO__close | |
811 | int | |
812 | PerlIO__close(PerlIO *f) | |
813 | { | |
814 | return (*PerlIOBase(f)->tab->Close)(f); | |
76ced9ad NIS |
815 | } |
816 | ||
5f1a76d0 NIS |
817 | #undef PerlIO_fdupopen |
818 | PerlIO * | |
819 | PerlIO_fdupopen(pTHX_ PerlIO *f) | |
820 | { | |
821 | char buf[8]; | |
822 | int fd = PerlLIO_dup(PerlIO_fileno(f)); | |
823 | PerlIO *new = PerlIO_fdopen(fd,PerlIO_modestr(f,buf)); | |
824 | if (new) | |
825 | { | |
826 | Off_t posn = PerlIO_tell(f); | |
827 | PerlIO_seek(new,posn,SEEK_SET); | |
828 | } | |
766a733e | 829 | return new; |
5f1a76d0 | 830 | } |
f5b9d040 | 831 | |
b931b1d9 NIS |
832 | #undef PerlIO_close |
833 | int | |
834 | PerlIO_close(PerlIO *f) | |
835 | { | |
a999f61b | 836 | dTHX; |
f6c77cf1 NIS |
837 | int code = -1; |
838 | if (f && *f) | |
b931b1d9 | 839 | { |
f6c77cf1 NIS |
840 | code = (*PerlIOBase(f)->tab->Close)(f); |
841 | while (*f) | |
842 | { | |
843 | PerlIO_pop(aTHX_ f); | |
844 | } | |
b931b1d9 NIS |
845 | } |
846 | return code; | |
847 | } | |
848 | ||
849 | #undef PerlIO_fileno | |
850 | int | |
851 | PerlIO_fileno(PerlIO *f) | |
852 | { | |
853 | return (*PerlIOBase(f)->tab->Fileno)(f); | |
854 | } | |
855 | ||
1141d9f8 NIS |
856 | static const char * |
857 | PerlIO_context_layers(pTHX_ const char *mode) | |
858 | { | |
859 | const char *type = NULL; | |
860 | /* Need to supply default layer info from open.pm */ | |
861 | if (PL_curcop) | |
862 | { | |
863 | SV *layers = PL_curcop->cop_io; | |
864 | if (layers) | |
865 | { | |
866 | STRLEN len; | |
867 | type = SvPV(layers,len); | |
868 | if (type && mode[0] != 'r') | |
869 | { | |
870 | /* Skip to write part */ | |
871 | const char *s = strchr(type,0); | |
872 | if (s && (s-type) < len) | |
873 | { | |
874 | type = s+1; | |
875 | } | |
876 | } | |
877 | } | |
878 | } | |
879 | return type; | |
880 | } | |
881 | ||
e3f3bf95 NIS |
882 | AV * |
883 | PerlIO_resolve_layers(pTHX_ const char *layers,const char *mode,int narg, SV **args) | |
ee518936 | 884 | { |
e3f3bf95 | 885 | AV *def = PerlIO_default_layers(aTHX); |
f6c77cf1 | 886 | int incdef = 1; |
e3f3bf95 NIS |
887 | if (!_perlio) |
888 | PerlIO_stdstreams(aTHX); | |
f6c77cf1 NIS |
889 | if (narg) |
890 | { | |
891 | if (SvROK(*args)) | |
892 | { | |
893 | if (sv_isobject(*args)) | |
894 | { | |
895 | SV *handler = PerlIO_find_layer(aTHX_ "object",6); | |
896 | if (handler) | |
897 | { | |
898 | def = newAV(); | |
899 | av_push(def,handler); | |
900 | av_push(def,&PL_sv_undef); | |
901 | incdef = 0; | |
902 | } | |
903 | } | |
904 | else | |
905 | { | |
906 | if (SvTYPE(SvRV(*args)) < SVt_PVAV) | |
907 | { | |
908 | SV *handler = PerlIO_find_layer(aTHX_ "Scalar",6); | |
909 | if (handler) | |
910 | { | |
911 | def = newAV(); | |
912 | av_push(def,handler); | |
913 | av_push(def,&PL_sv_undef); | |
914 | incdef = 0; | |
915 | } | |
916 | } | |
917 | else | |
918 | { | |
919 | Perl_croak(aTHX_ "Unsupported reference arg to open()"); | |
920 | } | |
921 | } | |
922 | } | |
923 | } | |
1141d9f8 NIS |
924 | if (!layers) |
925 | layers = PerlIO_context_layers(aTHX_ mode); | |
e3f3bf95 NIS |
926 | if (layers && *layers) |
927 | { | |
f6c77cf1 NIS |
928 | AV *av; |
929 | if (incdef) | |
e3f3bf95 | 930 | { |
f6c77cf1 NIS |
931 | IV n = av_len(def)+1; |
932 | av = newAV(); | |
933 | while (n-- > 0) | |
934 | { | |
935 | SV **svp = av_fetch(def,n,0); | |
936 | av_store(av,n,(svp) ? SvREFCNT_inc(*svp) : &PL_sv_undef); | |
937 | } | |
938 | } | |
939 | else | |
940 | { | |
941 | av = def; | |
e3f3bf95 NIS |
942 | } |
943 | PerlIO_parse_layers(aTHX_ av,layers); | |
944 | return av; | |
945 | } | |
946 | else | |
947 | { | |
f6c77cf1 NIS |
948 | if (incdef) |
949 | SvREFCNT_inc(def); | |
e3f3bf95 NIS |
950 | return def; |
951 | } | |
ee518936 NIS |
952 | } |
953 | ||
954 | PerlIO * | |
955 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) | |
956 | { | |
f6c77cf1 | 957 | if (!f && narg == 1 && *args == &PL_sv_undef) |
5e334b7b | 958 | { |
f6c77cf1 | 959 | if ((f = PerlIO_tmpfile())) |
e3f3bf95 | 960 | { |
f6c77cf1 NIS |
961 | if (!layers) |
962 | layers = PerlIO_context_layers(aTHX_ mode); | |
963 | if (layers && *layers) | |
964 | PerlIO_apply_layers(aTHX_ f,mode,layers); | |
e3f3bf95 | 965 | } |
5e334b7b | 966 | } |
e3f3bf95 NIS |
967 | else |
968 | { | |
f6c77cf1 NIS |
969 | AV *layera; |
970 | IV n; | |
971 | PerlIO_funcs *tab; | |
972 | if (f && *f) | |
e3f3bf95 | 973 | { |
f6c77cf1 NIS |
974 | /* This is "reopen" - it is not tested as perl does not use it yet */ |
975 | PerlIOl *l = *f; | |
976 | layera = newAV(); | |
977 | while (l) | |
978 | { | |
979 | SV *arg = (l->tab->Getarg) ? (*l->tab->Getarg)(&l) : &PL_sv_undef; | |
980 | av_unshift(layera,2); | |
981 | av_store(layera,0,PerlIO_tab_sv(aTHX_ l->tab)); | |
982 | av_store(layera,1,arg); | |
983 | l = *PerlIONext(&l); | |
984 | } | |
e3f3bf95 | 985 | } |
f6c77cf1 NIS |
986 | else |
987 | { | |
988 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
989 | } | |
990 | n = av_len(layera)-1; | |
991 | while (n >= 0) | |
992 | { | |
993 | PerlIO_funcs *t = PerlIO_layer_fetch(aTHX_ layera,n,NULL); | |
994 | if (t && t->Open) | |
995 | { | |
996 | tab = t; | |
997 | break; | |
998 | } | |
999 | n -= 2; | |
1000 | } | |
1001 | if (tab) | |
e3f3bf95 | 1002 | { |
f6c77cf1 NIS |
1003 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
1004 | tab->name,layers,mode,fd,imode,perm,f,narg,args); | |
1005 | f = (*tab->Open)(aTHX_ tab, layera, n, mode,fd,imode,perm,f,narg,args); | |
1006 | if (f) | |
e3f3bf95 | 1007 | { |
f6c77cf1 | 1008 | if (n+2 < av_len(layera)+1) |
e3f3bf95 | 1009 | { |
f6c77cf1 NIS |
1010 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n+2) != 0) |
1011 | { | |
1012 | f = NULL; | |
1013 | } | |
e3f3bf95 NIS |
1014 | } |
1015 | } | |
1016 | } | |
f6c77cf1 | 1017 | SvREFCNT_dec(layera); |
e3f3bf95 | 1018 | } |
5e334b7b | 1019 | return f; |
ee518936 | 1020 | } |
b931b1d9 NIS |
1021 | |
1022 | ||
9e353e3b NIS |
1023 | #undef PerlIO_fdopen |
1024 | PerlIO * | |
1025 | PerlIO_fdopen(int fd, const char *mode) | |
1026 | { | |
ee518936 NIS |
1027 | dTHX; |
1028 | return PerlIO_openn(aTHX_ Nullch,mode,fd,0,0,NULL,0,NULL); | |
9e353e3b NIS |
1029 | } |
1030 | ||
6f9d8c32 NIS |
1031 | #undef PerlIO_open |
1032 | PerlIO * | |
1033 | PerlIO_open(const char *path, const char *mode) | |
1034 | { | |
ee518936 NIS |
1035 | dTHX; |
1036 | SV *name = sv_2mortal(newSVpvn(path,strlen(path))); | |
1037 | return PerlIO_openn(aTHX_ Nullch,mode,-1,0,0,NULL,1,&name); | |
6f9d8c32 NIS |
1038 | } |
1039 | ||
9e353e3b NIS |
1040 | #undef PerlIO_reopen |
1041 | PerlIO * | |
1042 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
6f9d8c32 | 1043 | { |
ee518936 NIS |
1044 | dTHX; |
1045 | SV *name = sv_2mortal(newSVpvn(path,strlen(path))); | |
1046 | return PerlIO_openn(aTHX_ Nullch,mode,-1,0,0,f,1,&name); | |
760ac839 LW |
1047 | } |
1048 | ||
9e353e3b NIS |
1049 | #undef PerlIO_read |
1050 | SSize_t | |
1051 | PerlIO_read(PerlIO *f, void *vbuf, Size_t count) | |
6f9d8c32 | 1052 | { |
9e353e3b | 1053 | return (*PerlIOBase(f)->tab->Read)(f,vbuf,count); |
760ac839 LW |
1054 | } |
1055 | ||
313ca112 NIS |
1056 | #undef PerlIO_unread |
1057 | SSize_t | |
1058 | PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 1059 | { |
313ca112 | 1060 | return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count); |
760ac839 LW |
1061 | } |
1062 | ||
9e353e3b NIS |
1063 | #undef PerlIO_write |
1064 | SSize_t | |
1065 | PerlIO_write(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 1066 | { |
9e353e3b | 1067 | return (*PerlIOBase(f)->tab->Write)(f,vbuf,count); |
760ac839 LW |
1068 | } |
1069 | ||
9e353e3b | 1070 | #undef PerlIO_seek |
6f9d8c32 | 1071 | int |
9e353e3b | 1072 | PerlIO_seek(PerlIO *f, Off_t offset, int whence) |
760ac839 | 1073 | { |
9e353e3b | 1074 | return (*PerlIOBase(f)->tab->Seek)(f,offset,whence); |
760ac839 LW |
1075 | } |
1076 | ||
9e353e3b NIS |
1077 | #undef PerlIO_tell |
1078 | Off_t | |
1079 | PerlIO_tell(PerlIO *f) | |
760ac839 | 1080 | { |
9e353e3b | 1081 | return (*PerlIOBase(f)->tab->Tell)(f); |
760ac839 LW |
1082 | } |
1083 | ||
9e353e3b | 1084 | #undef PerlIO_flush |
6f9d8c32 | 1085 | int |
9e353e3b | 1086 | PerlIO_flush(PerlIO *f) |
760ac839 | 1087 | { |
6f9d8c32 NIS |
1088 | if (f) |
1089 | { | |
26fb694e NIS |
1090 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1091 | if (tab && tab->Flush) | |
1092 | { | |
1093 | return (*tab->Flush)(f); | |
1094 | } | |
1095 | else | |
1096 | { | |
1097 | PerlIO_debug("Cannot flush f=%p :%s\n",f,tab->name); | |
1098 | errno = EINVAL; | |
1099 | return -1; | |
1100 | } | |
6f9d8c32 | 1101 | } |
9e353e3b | 1102 | else |
6f9d8c32 | 1103 | { |
05d1247b | 1104 | PerlIO **table = &_perlio; |
9e353e3b | 1105 | int code = 0; |
05d1247b | 1106 | while ((f = *table)) |
6f9d8c32 | 1107 | { |
05d1247b NIS |
1108 | int i; |
1109 | table = (PerlIO **)(f++); | |
1110 | for (i=1; i < PERLIO_TABLE_SIZE; i++) | |
9e353e3b NIS |
1111 | { |
1112 | if (*f && PerlIO_flush(f) != 0) | |
1113 | code = -1; | |
05d1247b | 1114 | f++; |
9e353e3b | 1115 | } |
6f9d8c32 | 1116 | } |
9e353e3b | 1117 | return code; |
6f9d8c32 | 1118 | } |
760ac839 LW |
1119 | } |
1120 | ||
06da4f11 NIS |
1121 | #undef PerlIO_fill |
1122 | int | |
1123 | PerlIO_fill(PerlIO *f) | |
1124 | { | |
1125 | return (*PerlIOBase(f)->tab->Fill)(f); | |
1126 | } | |
1127 | ||
f3862f8b NIS |
1128 | #undef PerlIO_isutf8 |
1129 | int | |
1130 | PerlIO_isutf8(PerlIO *f) | |
1131 | { | |
1132 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1133 | } | |
1134 | ||
9e353e3b | 1135 | #undef PerlIO_eof |
6f9d8c32 | 1136 | int |
9e353e3b | 1137 | PerlIO_eof(PerlIO *f) |
760ac839 | 1138 | { |
9e353e3b NIS |
1139 | return (*PerlIOBase(f)->tab->Eof)(f); |
1140 | } | |
1141 | ||
1142 | #undef PerlIO_error | |
1143 | int | |
1144 | PerlIO_error(PerlIO *f) | |
1145 | { | |
1146 | return (*PerlIOBase(f)->tab->Error)(f); | |
1147 | } | |
1148 | ||
1149 | #undef PerlIO_clearerr | |
1150 | void | |
1151 | PerlIO_clearerr(PerlIO *f) | |
1152 | { | |
f5b9d040 NIS |
1153 | if (f && *f) |
1154 | (*PerlIOBase(f)->tab->Clearerr)(f); | |
9e353e3b NIS |
1155 | } |
1156 | ||
1157 | #undef PerlIO_setlinebuf | |
1158 | void | |
1159 | PerlIO_setlinebuf(PerlIO *f) | |
1160 | { | |
1161 | (*PerlIOBase(f)->tab->Setlinebuf)(f); | |
1162 | } | |
1163 | ||
1164 | #undef PerlIO_has_base | |
1165 | int | |
1166 | PerlIO_has_base(PerlIO *f) | |
1167 | { | |
1168 | if (f && *f) | |
6f9d8c32 | 1169 | { |
9e353e3b | 1170 | return (PerlIOBase(f)->tab->Get_base != NULL); |
6f9d8c32 | 1171 | } |
9e353e3b | 1172 | return 0; |
760ac839 LW |
1173 | } |
1174 | ||
9e353e3b NIS |
1175 | #undef PerlIO_fast_gets |
1176 | int | |
1177 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1178 | { |
5e2ab84b | 1179 | if (f && *f && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) |
6f9d8c32 | 1180 | { |
5e2ab84b NIS |
1181 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1182 | return (tab->Set_ptrcnt != NULL); | |
6f9d8c32 | 1183 | } |
9e353e3b NIS |
1184 | return 0; |
1185 | } | |
1186 | ||
1187 | #undef PerlIO_has_cntptr | |
1188 | int | |
1189 | PerlIO_has_cntptr(PerlIO *f) | |
1190 | { | |
1191 | if (f && *f) | |
1192 | { | |
1193 | PerlIO_funcs *tab = PerlIOBase(f)->tab; | |
1194 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1195 | } | |
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | #undef PerlIO_canset_cnt | |
1200 | int | |
1201 | PerlIO_canset_cnt(PerlIO *f) | |
1202 | { | |
1203 | if (f && *f) | |
1204 | { | |
c7fc522f NIS |
1205 | PerlIOl *l = PerlIOBase(f); |
1206 | return (l->tab->Set_ptrcnt != NULL); | |
9e353e3b | 1207 | } |
c7fc522f | 1208 | return 0; |
760ac839 LW |
1209 | } |
1210 | ||
1211 | #undef PerlIO_get_base | |
888911fc | 1212 | STDCHAR * |
a20bf0c3 | 1213 | PerlIO_get_base(PerlIO *f) |
760ac839 | 1214 | { |
9e353e3b NIS |
1215 | return (*PerlIOBase(f)->tab->Get_base)(f); |
1216 | } | |
1217 | ||
1218 | #undef PerlIO_get_bufsiz | |
1219 | int | |
1220 | PerlIO_get_bufsiz(PerlIO *f) | |
1221 | { | |
1222 | return (*PerlIOBase(f)->tab->Get_bufsiz)(f); | |
1223 | } | |
1224 | ||
1225 | #undef PerlIO_get_ptr | |
1226 | STDCHAR * | |
1227 | PerlIO_get_ptr(PerlIO *f) | |
1228 | { | |
5e2ab84b NIS |
1229 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1230 | if (tab->Get_ptr == NULL) | |
1231 | return NULL; | |
1232 | return (*tab->Get_ptr)(f); | |
9e353e3b NIS |
1233 | } |
1234 | ||
1235 | #undef PerlIO_get_cnt | |
05d1247b | 1236 | int |
9e353e3b NIS |
1237 | PerlIO_get_cnt(PerlIO *f) |
1238 | { | |
5e2ab84b NIS |
1239 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1240 | if (tab->Get_cnt == NULL) | |
1241 | return 0; | |
1242 | return (*tab->Get_cnt)(f); | |
9e353e3b NIS |
1243 | } |
1244 | ||
1245 | #undef PerlIO_set_cnt | |
1246 | void | |
05d1247b | 1247 | PerlIO_set_cnt(PerlIO *f,int cnt) |
9e353e3b | 1248 | { |
f3862f8b | 1249 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt); |
9e353e3b NIS |
1250 | } |
1251 | ||
1252 | #undef PerlIO_set_ptrcnt | |
1253 | void | |
05d1247b | 1254 | PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) |
9e353e3b | 1255 | { |
5e2ab84b NIS |
1256 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1257 | if (tab->Set_ptrcnt == NULL) | |
1258 | { | |
1259 | dTHX; | |
1260 | Perl_croak(aTHX_ "PerlIO buffer snooping abuse"); | |
1261 | } | |
f3862f8b | 1262 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt); |
9e353e3b NIS |
1263 | } |
1264 | ||
1265 | /*--------------------------------------------------------------------------------------*/ | |
dfebf958 NIS |
1266 | /* utf8 and raw dummy layers */ |
1267 | ||
26fb694e | 1268 | IV |
e3f3bf95 | 1269 | PerlIOUtf8_pushed(PerlIO *f, const char *mode, SV *arg) |
26fb694e NIS |
1270 | { |
1271 | if (PerlIONext(f)) | |
1272 | { | |
a999f61b | 1273 | dTHX; |
26fb694e | 1274 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
a999f61b | 1275 | PerlIO_pop(aTHX_ f); |
26fb694e NIS |
1276 | if (tab->kind & PERLIO_K_UTF8) |
1277 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1278 | else | |
1279 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1280 | return 0; | |
1281 | } | |
1282 | return -1; | |
1283 | } | |
1284 | ||
dfebf958 NIS |
1285 | PerlIO_funcs PerlIO_utf8 = { |
1286 | "utf8", | |
1287 | sizeof(PerlIOl), | |
26fb694e | 1288 | PERLIO_K_DUMMY|PERLIO_F_UTF8, |
26fb694e NIS |
1289 | PerlIOUtf8_pushed, |
1290 | NULL, | |
1291 | NULL, | |
1292 | NULL, | |
1293 | NULL, | |
1294 | NULL, | |
1295 | NULL, | |
1296 | NULL, | |
e3f3bf95 NIS |
1297 | NULL, |
1298 | NULL, | |
1299 | NULL, | |
26fb694e NIS |
1300 | NULL, /* flush */ |
1301 | NULL, /* fill */ | |
1302 | NULL, | |
1303 | NULL, | |
1304 | NULL, | |
1305 | NULL, | |
1306 | NULL, /* get_base */ | |
1307 | NULL, /* get_bufsiz */ | |
1308 | NULL, /* get_ptr */ | |
1309 | NULL, /* get_cnt */ | |
1310 | NULL, /* set_ptrcnt */ | |
1311 | }; | |
1312 | ||
1313 | PerlIO_funcs PerlIO_byte = { | |
1314 | "bytes", | |
1315 | sizeof(PerlIOl), | |
1316 | PERLIO_K_DUMMY, | |
dfebf958 NIS |
1317 | PerlIOUtf8_pushed, |
1318 | NULL, | |
1319 | NULL, | |
1320 | NULL, | |
1321 | NULL, | |
1322 | NULL, | |
1323 | NULL, | |
1324 | NULL, | |
e3f3bf95 NIS |
1325 | NULL, |
1326 | NULL, | |
1327 | NULL, | |
dfebf958 NIS |
1328 | NULL, /* flush */ |
1329 | NULL, /* fill */ | |
1330 | NULL, | |
1331 | NULL, | |
1332 | NULL, | |
1333 | NULL, | |
1334 | NULL, /* get_base */ | |
1335 | NULL, /* get_bufsiz */ | |
1336 | NULL, /* get_ptr */ | |
1337 | NULL, /* get_cnt */ | |
1338 | NULL, /* set_ptrcnt */ | |
1339 | }; | |
1340 | ||
1341 | PerlIO * | |
e3f3bf95 | 1342 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, AV *layers, IV n,const char *mode, int fd, int imode, int perm, PerlIO *old, int narg, SV **args) |
dfebf958 | 1343 | { |
4b803d04 | 1344 | PerlIO_funcs *tab = PerlIO_default_btm(); |
e3f3bf95 | 1345 | return (*tab->Open)(aTHX_ tab,layers,n-2,mode,fd,imode,perm,old,narg,args); |
dfebf958 NIS |
1346 | } |
1347 | ||
1348 | PerlIO_funcs PerlIO_raw = { | |
1349 | "raw", | |
1350 | sizeof(PerlIOl), | |
4b803d04 | 1351 | PERLIO_K_DUMMY, |
dfebf958 | 1352 | PerlIORaw_pushed, |
26fb694e | 1353 | PerlIOBase_popped, |
e3f3bf95 NIS |
1354 | PerlIORaw_open, |
1355 | NULL, | |
1356 | NULL, | |
dfebf958 NIS |
1357 | NULL, |
1358 | NULL, | |
1359 | NULL, | |
1360 | NULL, | |
1361 | NULL, | |
1362 | NULL, | |
1363 | NULL, /* flush */ | |
1364 | NULL, /* fill */ | |
1365 | NULL, | |
1366 | NULL, | |
1367 | NULL, | |
1368 | NULL, | |
1369 | NULL, /* get_base */ | |
1370 | NULL, /* get_bufsiz */ | |
1371 | NULL, /* get_ptr */ | |
1372 | NULL, /* get_cnt */ | |
1373 | NULL, /* set_ptrcnt */ | |
1374 | }; | |
1375 | /*--------------------------------------------------------------------------------------*/ | |
1376 | /*--------------------------------------------------------------------------------------*/ | |
9e353e3b NIS |
1377 | /* "Methods" of the "base class" */ |
1378 | ||
1379 | IV | |
1380 | PerlIOBase_fileno(PerlIO *f) | |
1381 | { | |
1382 | return PerlIO_fileno(PerlIONext(f)); | |
1383 | } | |
1384 | ||
f5b9d040 NIS |
1385 | char * |
1386 | PerlIO_modestr(PerlIO *f,char *buf) | |
1387 | { | |
1388 | char *s = buf; | |
1389 | IV flags = PerlIOBase(f)->flags; | |
5f1a76d0 NIS |
1390 | if (flags & PERLIO_F_APPEND) |
1391 | { | |
1392 | *s++ = 'a'; | |
1393 | if (flags & PERLIO_F_CANREAD) | |
1394 | { | |
1395 | *s++ = '+'; | |
1396 | } | |
766a733e | 1397 | } |
5f1a76d0 NIS |
1398 | else if (flags & PERLIO_F_CANREAD) |
1399 | { | |
1400 | *s++ = 'r'; | |
1401 | if (flags & PERLIO_F_CANWRITE) | |
1402 | *s++ = '+'; | |
1403 | } | |
1404 | else if (flags & PERLIO_F_CANWRITE) | |
1405 | { | |
1406 | *s++ = 'w'; | |
1407 | if (flags & PERLIO_F_CANREAD) | |
1408 | { | |
1409 | *s++ = '+'; | |
1410 | } | |
1411 | } | |
1412 | #if O_TEXT != O_BINARY | |
1413 | if (!(flags & PERLIO_F_CRLF)) | |
a4d3c1d3 | 1414 | *s++ = 'b'; |
5f1a76d0 | 1415 | #endif |
f5b9d040 NIS |
1416 | *s = '\0'; |
1417 | return buf; | |
1418 | } | |
1419 | ||
76ced9ad | 1420 | IV |
e3f3bf95 | 1421 | PerlIOBase_pushed(PerlIO *f, const char *mode, SV *arg) |
9e353e3b | 1422 | { |
76ced9ad | 1423 | PerlIOl *l = PerlIOBase(f); |
f5b9d040 NIS |
1424 | const char *omode = mode; |
1425 | char temp[8]; | |
5e2ab84b | 1426 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
76ced9ad | 1427 | l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
f5b9d040 | 1428 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND); |
5e2ab84b NIS |
1429 | if (tab->Set_ptrcnt != NULL) |
1430 | l->flags |= PERLIO_F_FASTGETS; | |
76ced9ad | 1431 | if (mode) |
6f9d8c32 | 1432 | { |
76ced9ad | 1433 | switch (*mode++) |
06da4f11 | 1434 | { |
76ced9ad | 1435 | case 'r': |
f5b9d040 | 1436 | l->flags |= PERLIO_F_CANREAD; |
76ced9ad NIS |
1437 | break; |
1438 | case 'a': | |
f5b9d040 | 1439 | l->flags |= PERLIO_F_APPEND|PERLIO_F_CANWRITE; |
76ced9ad NIS |
1440 | break; |
1441 | case 'w': | |
f5b9d040 | 1442 | l->flags |= PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE; |
76ced9ad NIS |
1443 | break; |
1444 | default: | |
1445 | errno = EINVAL; | |
1446 | return -1; | |
1447 | } | |
1448 | while (*mode) | |
1449 | { | |
1450 | switch (*mode++) | |
1451 | { | |
1452 | case '+': | |
1453 | l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE; | |
1454 | break; | |
1455 | case 'b': | |
f5b9d040 NIS |
1456 | l->flags &= ~PERLIO_F_CRLF; |
1457 | break; | |
1458 | case 't': | |
1459 | l->flags |= PERLIO_F_CRLF; | |
76ced9ad NIS |
1460 | break; |
1461 | default: | |
1462 | errno = EINVAL; | |
1463 | return -1; | |
1464 | } | |
06da4f11 | 1465 | } |
6f9d8c32 | 1466 | } |
76ced9ad NIS |
1467 | else |
1468 | { | |
1469 | if (l->next) | |
1470 | { | |
1471 | l->flags |= l->next->flags & | |
f5b9d040 | 1472 | (PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_TRUNCATE|PERLIO_F_APPEND); |
76ced9ad NIS |
1473 | } |
1474 | } | |
5e2ab84b | 1475 | #if 0 |
4659c93f | 1476 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08"UVxf" (%s)\n", |
f5b9d040 | 1477 | f,PerlIOBase(f)->tab->name,(omode) ? omode : "(Null)", |
a4d3c1d3 | 1478 | l->flags,PerlIO_modestr(f,temp)); |
5e2ab84b | 1479 | #endif |
76ced9ad NIS |
1480 | return 0; |
1481 | } | |
1482 | ||
1483 | IV | |
1484 | PerlIOBase_popped(PerlIO *f) | |
1485 | { | |
1486 | return 0; | |
760ac839 LW |
1487 | } |
1488 | ||
9e353e3b NIS |
1489 | SSize_t |
1490 | PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count) | |
1491 | { | |
a999f61b | 1492 | dTHX; |
9e353e3b | 1493 | Off_t old = PerlIO_tell(f); |
72e44f29 | 1494 | SSize_t done; |
e3f3bf95 | 1495 | PerlIO_push(aTHX_ f,&PerlIO_pending,"r",Nullsv); |
72e44f29 NIS |
1496 | done = PerlIOBuf_unread(f,vbuf,count); |
1497 | PerlIOSelf(f,PerlIOBuf)->posn = old - done; | |
1498 | return done; | |
9e353e3b NIS |
1499 | } |
1500 | ||
f6c77cf1 NIS |
1501 | SSize_t |
1502 | PerlIOBase_read(PerlIO *f, void *vbuf, Size_t count) | |
1503 | { | |
1504 | STDCHAR *buf = (STDCHAR *) vbuf; | |
1505 | if (f) | |
1506 | { | |
1507 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) | |
1508 | return 0; | |
1509 | while (count > 0) | |
1510 | { | |
1511 | SSize_t avail = PerlIO_get_cnt(f); | |
1512 | SSize_t take = (count < avail) ? count : avail; | |
1513 | if (take > 0) | |
1514 | { | |
1515 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
1516 | Copy(ptr,buf,take,STDCHAR); | |
1517 | PerlIO_set_ptrcnt(f,ptr+take,(avail -= take)); | |
1518 | count -= take; | |
1519 | buf += take; | |
1520 | } | |
1521 | if (count > 0 && avail <= 0) | |
1522 | { | |
1523 | if (PerlIO_fill(f) != 0) | |
1524 | break; | |
1525 | } | |
1526 | } | |
1527 | return (buf - (STDCHAR *) vbuf); | |
1528 | } | |
1529 | return 0; | |
1530 | } | |
1531 | ||
9e353e3b | 1532 | IV |
06da4f11 | 1533 | PerlIOBase_noop_ok(PerlIO *f) |
9e353e3b NIS |
1534 | { |
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | IV | |
06da4f11 NIS |
1539 | PerlIOBase_noop_fail(PerlIO *f) |
1540 | { | |
1541 | return -1; | |
1542 | } | |
1543 | ||
1544 | IV | |
9e353e3b NIS |
1545 | PerlIOBase_close(PerlIO *f) |
1546 | { | |
1547 | IV code = 0; | |
f5b9d040 | 1548 | PerlIO *n = PerlIONext(f); |
9e353e3b NIS |
1549 | if (PerlIO_flush(f) != 0) |
1550 | code = -1; | |
f6c77cf1 | 1551 | if (n && *n && (*PerlIOBase(n)->tab->Close)(n) != 0) |
9e353e3b NIS |
1552 | code = -1; |
1553 | PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN); | |
1554 | return code; | |
1555 | } | |
1556 | ||
1557 | IV | |
1558 | PerlIOBase_eof(PerlIO *f) | |
1559 | { | |
1560 | if (f && *f) | |
1561 | { | |
1562 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; | |
1563 | } | |
1564 | return 1; | |
1565 | } | |
1566 | ||
1567 | IV | |
1568 | PerlIOBase_error(PerlIO *f) | |
1569 | { | |
1570 | if (f && *f) | |
1571 | { | |
1572 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; | |
1573 | } | |
1574 | return 1; | |
1575 | } | |
1576 | ||
1577 | void | |
1578 | PerlIOBase_clearerr(PerlIO *f) | |
1579 | { | |
1580 | if (f && *f) | |
1581 | { | |
f5b9d040 NIS |
1582 | PerlIO *n = PerlIONext(f); |
1583 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR|PERLIO_F_EOF); | |
1584 | if (n) | |
1585 | PerlIO_clearerr(n); | |
9e353e3b NIS |
1586 | } |
1587 | } | |
1588 | ||
1589 | void | |
1590 | PerlIOBase_setlinebuf(PerlIO *f) | |
1591 | { | |
f6c77cf1 NIS |
1592 | if (f) |
1593 | { | |
1594 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
1595 | } | |
9e353e3b NIS |
1596 | } |
1597 | ||
9e353e3b NIS |
1598 | /*--------------------------------------------------------------------------------------*/ |
1599 | /* Bottom-most level for UNIX-like case */ | |
1600 | ||
1601 | typedef struct | |
1602 | { | |
1603 | struct _PerlIO base; /* The generic part */ | |
1604 | int fd; /* UNIX like file descriptor */ | |
1605 | int oflags; /* open/fcntl flags */ | |
1606 | } PerlIOUnix; | |
1607 | ||
6f9d8c32 | 1608 | int |
9e353e3b | 1609 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 1610 | { |
9e353e3b NIS |
1611 | int oflags = -1; |
1612 | switch(*mode) | |
1613 | { | |
1614 | case 'r': | |
1615 | oflags = O_RDONLY; | |
1616 | if (*++mode == '+') | |
1617 | { | |
1618 | oflags = O_RDWR; | |
1619 | mode++; | |
1620 | } | |
1621 | break; | |
1622 | ||
1623 | case 'w': | |
1624 | oflags = O_CREAT|O_TRUNC; | |
1625 | if (*++mode == '+') | |
1626 | { | |
1627 | oflags |= O_RDWR; | |
1628 | mode++; | |
1629 | } | |
1630 | else | |
1631 | oflags |= O_WRONLY; | |
1632 | break; | |
1633 | ||
1634 | case 'a': | |
1635 | oflags = O_CREAT|O_APPEND; | |
1636 | if (*++mode == '+') | |
1637 | { | |
1638 | oflags |= O_RDWR; | |
1639 | mode++; | |
1640 | } | |
1641 | else | |
1642 | oflags |= O_WRONLY; | |
1643 | break; | |
1644 | } | |
83b075c3 NIS |
1645 | if (*mode == 'b') |
1646 | { | |
f5b9d040 NIS |
1647 | oflags |= O_BINARY; |
1648 | oflags &= ~O_TEXT; | |
1649 | mode++; | |
1650 | } | |
1651 | else if (*mode == 't') | |
1652 | { | |
1653 | oflags |= O_TEXT; | |
1654 | oflags &= ~O_BINARY; | |
60382766 NIS |
1655 | mode++; |
1656 | } | |
99efab12 NIS |
1657 | /* Always open in binary mode */ |
1658 | oflags |= O_BINARY; | |
9e353e3b | 1659 | if (*mode || oflags == -1) |
6f9d8c32 | 1660 | { |
9e353e3b NIS |
1661 | errno = EINVAL; |
1662 | oflags = -1; | |
6f9d8c32 | 1663 | } |
9e353e3b NIS |
1664 | return oflags; |
1665 | } | |
1666 | ||
1667 | IV | |
1668 | PerlIOUnix_fileno(PerlIO *f) | |
1669 | { | |
1670 | return PerlIOSelf(f,PerlIOUnix)->fd; | |
1671 | } | |
1672 | ||
4b803d04 | 1673 | IV |
e3f3bf95 | 1674 | PerlIOUnix_pushed(PerlIO *f, const char *mode, SV *arg) |
4b803d04 | 1675 | { |
e3f3bf95 | 1676 | IV code = PerlIOBase_pushed(f,mode,arg); |
4b803d04 NIS |
1677 | if (*PerlIONext(f)) |
1678 | { | |
1679 | PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix); | |
1680 | s->fd = PerlIO_fileno(PerlIONext(f)); | |
1681 | s->oflags = PerlIOUnix_oflags(mode); | |
1682 | } | |
1683 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
1684 | return code; | |
1685 | } | |
1686 | ||
9e353e3b | 1687 | PerlIO * |
e3f3bf95 | 1688 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, AV *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
9e353e3b | 1689 | { |
ee518936 | 1690 | if (f) |
9e353e3b | 1691 | { |
ee518936 NIS |
1692 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
1693 | (*PerlIOBase(f)->tab->Close)(f); | |
1694 | } | |
1695 | if (narg > 0) | |
1696 | { | |
1697 | char *path = SvPV_nolen(*args); | |
1698 | if (*mode == '#') | |
1699 | mode++; | |
1700 | else | |
9e353e3b | 1701 | { |
ee518936 NIS |
1702 | imode = PerlIOUnix_oflags(mode); |
1703 | perm = 0666; | |
1704 | } | |
1705 | if (imode != -1) | |
1706 | { | |
1707 | fd = PerlLIO_open3(path,imode,perm); | |
9e353e3b NIS |
1708 | } |
1709 | } | |
ee518936 | 1710 | if (fd >= 0) |
9e353e3b | 1711 | { |
ee518936 NIS |
1712 | PerlIOUnix *s; |
1713 | if (*mode == 'I') | |
1714 | mode++; | |
1715 | if (!f) | |
9e353e3b | 1716 | { |
ee518936 | 1717 | f = PerlIO_allocate(aTHX); |
f6c77cf1 | 1718 | s = PerlIOSelf(PerlIO_push(aTHX_ f,self,mode,PerlIOArg),PerlIOUnix); |
ee518936 NIS |
1719 | } |
1720 | else | |
1721 | s = PerlIOSelf(f,PerlIOUnix); | |
1722 | s->fd = fd; | |
1723 | s->oflags = imode; | |
1724 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
1725 | return f; | |
1726 | } | |
1727 | else | |
1728 | { | |
1729 | if (f) | |
1730 | { | |
1731 | /* FIXME: pop layers ??? */ | |
9e353e3b | 1732 | } |
ee518936 | 1733 | return NULL; |
9e353e3b | 1734 | } |
9e353e3b NIS |
1735 | } |
1736 | ||
1737 | SSize_t | |
1738 | PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count) | |
1739 | { | |
adb71456 | 1740 | dTHX; |
9e353e3b | 1741 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
8f24bd79 NIS |
1742 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
1743 | return 0; | |
9e353e3b NIS |
1744 | while (1) |
1745 | { | |
00b02797 | 1746 | SSize_t len = PerlLIO_read(fd,vbuf,count); |
9e353e3b | 1747 | if (len >= 0 || errno != EINTR) |
06da4f11 NIS |
1748 | { |
1749 | if (len < 0) | |
1750 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
1751 | else if (len == 0 && count != 0) | |
1752 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
1753 | return len; | |
1754 | } | |
0a8e0eff | 1755 | PERL_ASYNC_CHECK(); |
9e353e3b NIS |
1756 | } |
1757 | } | |
1758 | ||
1759 | SSize_t | |
1760 | PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count) | |
1761 | { | |
adb71456 | 1762 | dTHX; |
9e353e3b NIS |
1763 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1764 | while (1) | |
1765 | { | |
00b02797 | 1766 | SSize_t len = PerlLIO_write(fd,vbuf,count); |
9e353e3b | 1767 | if (len >= 0 || errno != EINTR) |
06da4f11 NIS |
1768 | { |
1769 | if (len < 0) | |
1770 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
1771 | return len; | |
1772 | } | |
0a8e0eff | 1773 | PERL_ASYNC_CHECK(); |
9e353e3b NIS |
1774 | } |
1775 | } | |
1776 | ||
1777 | IV | |
1778 | PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence) | |
1779 | { | |
adb71456 | 1780 | dTHX; |
00b02797 | 1781 | Off_t new = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence); |
06da4f11 | 1782 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
9e353e3b NIS |
1783 | return (new == (Off_t) -1) ? -1 : 0; |
1784 | } | |
1785 | ||
1786 | Off_t | |
1787 | PerlIOUnix_tell(PerlIO *f) | |
1788 | { | |
adb71456 | 1789 | dTHX; |
766a733e | 1790 | Off_t posn = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
00b02797 | 1791 | return PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
9e353e3b NIS |
1792 | } |
1793 | ||
1794 | IV | |
1795 | PerlIOUnix_close(PerlIO *f) | |
1796 | { | |
adb71456 | 1797 | dTHX; |
9e353e3b NIS |
1798 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1799 | int code = 0; | |
00b02797 | 1800 | while (PerlLIO_close(fd) != 0) |
9e353e3b NIS |
1801 | { |
1802 | if (errno != EINTR) | |
1803 | { | |
1804 | code = -1; | |
1805 | break; | |
1806 | } | |
0a8e0eff | 1807 | PERL_ASYNC_CHECK(); |
9e353e3b NIS |
1808 | } |
1809 | if (code == 0) | |
1810 | { | |
1811 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
1812 | } | |
1813 | return code; | |
1814 | } | |
1815 | ||
1816 | PerlIO_funcs PerlIO_unix = { | |
1817 | "unix", | |
1818 | sizeof(PerlIOUnix), | |
f5b9d040 | 1819 | PERLIO_K_RAW, |
4b803d04 | 1820 | PerlIOUnix_pushed, |
06da4f11 | 1821 | PerlIOBase_noop_ok, |
e3f3bf95 NIS |
1822 | PerlIOUnix_open, |
1823 | NULL, | |
1824 | PerlIOUnix_fileno, | |
9e353e3b NIS |
1825 | PerlIOUnix_read, |
1826 | PerlIOBase_unread, | |
1827 | PerlIOUnix_write, | |
1828 | PerlIOUnix_seek, | |
1829 | PerlIOUnix_tell, | |
1830 | PerlIOUnix_close, | |
76ced9ad NIS |
1831 | PerlIOBase_noop_ok, /* flush */ |
1832 | PerlIOBase_noop_fail, /* fill */ | |
9e353e3b NIS |
1833 | PerlIOBase_eof, |
1834 | PerlIOBase_error, | |
1835 | PerlIOBase_clearerr, | |
1836 | PerlIOBase_setlinebuf, | |
1837 | NULL, /* get_base */ | |
1838 | NULL, /* get_bufsiz */ | |
1839 | NULL, /* get_ptr */ | |
1840 | NULL, /* get_cnt */ | |
1841 | NULL, /* set_ptrcnt */ | |
1842 | }; | |
1843 | ||
1844 | /*--------------------------------------------------------------------------------------*/ | |
1845 | /* stdio as a layer */ | |
1846 | ||
1847 | typedef struct | |
1848 | { | |
1849 | struct _PerlIO base; | |
1850 | FILE * stdio; /* The stream */ | |
1851 | } PerlIOStdio; | |
1852 | ||
1853 | IV | |
1854 | PerlIOStdio_fileno(PerlIO *f) | |
1855 | { | |
adb71456 | 1856 | dTHX; |
eaf8b698 | 1857 | return PerlSIO_fileno(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
1858 | } |
1859 | ||
766a733e | 1860 | char * |
f5b9d040 NIS |
1861 | PerlIOStdio_mode(const char *mode,char *tmode) |
1862 | { | |
766a733e NIS |
1863 | char *ret = tmode; |
1864 | while (*mode) | |
1865 | { | |
1866 | *tmode++ = *mode++; | |
1867 | } | |
f5b9d040 NIS |
1868 | if (O_BINARY != O_TEXT) |
1869 | { | |
f5b9d040 | 1870 | *tmode++ = 'b'; |
f5b9d040 | 1871 | } |
766a733e | 1872 | *tmode = '\0'; |
f5b9d040 NIS |
1873 | return ret; |
1874 | } | |
9e353e3b | 1875 | |
4b803d04 NIS |
1876 | /* This isn't used yet ... */ |
1877 | IV | |
e3f3bf95 | 1878 | PerlIOStdio_pushed(PerlIO *f, const char *mode, SV *arg) |
4b803d04 | 1879 | { |
b86471a1 | 1880 | dTHX; |
4b803d04 NIS |
1881 | if (*PerlIONext(f)) |
1882 | { | |
1883 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); | |
1884 | char tmode[8]; | |
1885 | FILE *stdio = PerlSIO_fdopen(PerlIO_fileno(PerlIONext(f)),mode = PerlIOStdio_mode(mode,tmode)); | |
1886 | if (stdio) | |
1887 | s->stdio = stdio; | |
1888 | else | |
1889 | return -1; | |
1890 | } | |
e3f3bf95 | 1891 | return PerlIOBase_pushed(f,mode,arg); |
4b803d04 NIS |
1892 | } |
1893 | ||
9e353e3b NIS |
1894 | #undef PerlIO_importFILE |
1895 | PerlIO * | |
1896 | PerlIO_importFILE(FILE *stdio, int fl) | |
1897 | { | |
5f1a76d0 | 1898 | dTHX; |
9e353e3b NIS |
1899 | PerlIO *f = NULL; |
1900 | if (stdio) | |
1901 | { | |
e3f3bf95 | 1902 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),&PerlIO_stdio,"r+",Nullsv),PerlIOStdio); |
9e353e3b NIS |
1903 | s->stdio = stdio; |
1904 | } | |
1905 | return f; | |
1906 | } | |
1907 | ||
1908 | PerlIO * | |
e3f3bf95 | 1909 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, AV *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
9e353e3b | 1910 | { |
ee518936 NIS |
1911 | char tmode[8]; |
1912 | if (f) | |
9e353e3b | 1913 | { |
ee518936 NIS |
1914 | char *path = SvPV_nolen(*args); |
1915 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); | |
1916 | FILE *stdio = PerlSIO_freopen(path,(mode = PerlIOStdio_mode(mode,tmode)),s->stdio); | |
1917 | if (!s->stdio) | |
1918 | return NULL; | |
1919 | s->stdio = stdio; | |
1920 | return f; | |
9e353e3b | 1921 | } |
ee518936 NIS |
1922 | else |
1923 | { | |
1924 | if (narg > 0) | |
1925 | { | |
1926 | char *path = SvPV_nolen(*args); | |
1927 | if (*mode == '#') | |
1928 | { | |
1929 | mode++; | |
1930 | fd = PerlLIO_open3(path,imode,perm); | |
1931 | } | |
1932 | else | |
1933 | { | |
1934 | FILE *stdio = PerlSIO_fopen(path,mode); | |
1935 | if (stdio) | |
1936 | { | |
a999f61b | 1937 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)), self, |
f6c77cf1 | 1938 | (mode = PerlIOStdio_mode(mode,tmode)),PerlIOArg), |
ee518936 NIS |
1939 | PerlIOStdio); |
1940 | s->stdio = stdio; | |
1941 | } | |
1942 | return f; | |
1943 | } | |
1944 | } | |
1945 | if (fd >= 0) | |
1946 | { | |
1947 | FILE *stdio = NULL; | |
1948 | int init = 0; | |
1949 | if (*mode == 'I') | |
1950 | { | |
1951 | init = 1; | |
1952 | mode++; | |
1953 | } | |
1954 | if (init) | |
1955 | { | |
1956 | switch(fd) | |
1957 | { | |
1958 | case 0: | |
1959 | stdio = PerlSIO_stdin; | |
1960 | break; | |
1961 | case 1: | |
1962 | stdio = PerlSIO_stdout; | |
1963 | break; | |
1964 | case 2: | |
1965 | stdio = PerlSIO_stderr; | |
1966 | break; | |
1967 | } | |
1968 | } | |
1969 | else | |
1970 | { | |
1971 | stdio = PerlSIO_fdopen(fd,mode = PerlIOStdio_mode(mode,tmode)); | |
1972 | } | |
1973 | if (stdio) | |
1974 | { | |
f6c77cf1 | 1975 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),self,mode,PerlIOArg),PerlIOStdio); |
ee518936 NIS |
1976 | s->stdio = stdio; |
1977 | return f; | |
1978 | } | |
1979 | } | |
1980 | } | |
1981 | return NULL; | |
9e353e3b NIS |
1982 | } |
1983 | ||
1984 | SSize_t | |
1985 | PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count) | |
1986 | { | |
adb71456 | 1987 | dTHX; |
9e353e3b | 1988 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
c7fc522f | 1989 | SSize_t got = 0; |
9e353e3b NIS |
1990 | if (count == 1) |
1991 | { | |
1992 | STDCHAR *buf = (STDCHAR *) vbuf; | |
1993 | /* Perl is expecting PerlIO_getc() to fill the buffer | |
1994 | * Linux's stdio does not do that for fread() | |
1995 | */ | |
eaf8b698 | 1996 | int ch = PerlSIO_fgetc(s); |
9e353e3b NIS |
1997 | if (ch != EOF) |
1998 | { | |
1999 | *buf = ch; | |
c7fc522f | 2000 | got = 1; |
9e353e3b | 2001 | } |
9e353e3b | 2002 | } |
c7fc522f | 2003 | else |
eaf8b698 | 2004 | got = PerlSIO_fread(vbuf,1,count,s); |
c7fc522f | 2005 | return got; |
9e353e3b NIS |
2006 | } |
2007 | ||
2008 | SSize_t | |
2009 | PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count) | |
2010 | { | |
adb71456 | 2011 | dTHX; |
9e353e3b NIS |
2012 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
2013 | STDCHAR *buf = ((STDCHAR *)vbuf)+count-1; | |
2014 | SSize_t unread = 0; | |
2015 | while (count > 0) | |
2016 | { | |
2017 | int ch = *buf-- & 0xff; | |
eaf8b698 | 2018 | if (PerlSIO_ungetc(ch,s) != ch) |
9e353e3b NIS |
2019 | break; |
2020 | unread++; | |
2021 | count--; | |
2022 | } | |
2023 | return unread; | |
2024 | } | |
2025 | ||
2026 | SSize_t | |
2027 | PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count) | |
2028 | { | |
adb71456 | 2029 | dTHX; |
eaf8b698 | 2030 | return PerlSIO_fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
2031 | } |
2032 | ||
2033 | IV | |
2034 | PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence) | |
2035 | { | |
adb71456 | 2036 | dTHX; |
c7fc522f | 2037 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 2038 | return PerlSIO_fseek(stdio,offset,whence); |
9e353e3b NIS |
2039 | } |
2040 | ||
2041 | Off_t | |
2042 | PerlIOStdio_tell(PerlIO *f) | |
2043 | { | |
adb71456 | 2044 | dTHX; |
c7fc522f | 2045 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 2046 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
2047 | } |
2048 | ||
2049 | IV | |
2050 | PerlIOStdio_close(PerlIO *f) | |
2051 | { | |
adb71456 | 2052 | dTHX; |
405b3941 | 2053 | #ifdef HAS_SOCKS5_INIT |
cf829ab0 | 2054 | int optval, optlen = sizeof(int); |
8e4bc33b | 2055 | #endif |
3789aae2 | 2056 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
cf829ab0 | 2057 | return( |
405b3941 | 2058 | #ifdef HAS_SOCKS5_INIT |
a4d3c1d3 | 2059 | (getsockopt(PerlIO_fileno(f), SOL_SOCKET, SO_TYPE, (char *)&optval, &optlen) < 0) ? |
eaf8b698 | 2060 | PerlSIO_fclose(stdio) : |
8e4bc33b YST |
2061 | close(PerlIO_fileno(f)) |
2062 | #else | |
2063 | PerlSIO_fclose(stdio) | |
2064 | #endif | |
2065 | ); | |
2066 | ||
9e353e3b NIS |
2067 | } |
2068 | ||
2069 | IV | |
2070 | PerlIOStdio_flush(PerlIO *f) | |
2071 | { | |
adb71456 | 2072 | dTHX; |
9e353e3b | 2073 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
88b61e10 NIS |
2074 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) |
2075 | { | |
eaf8b698 | 2076 | return PerlSIO_fflush(stdio); |
88b61e10 NIS |
2077 | } |
2078 | else | |
2079 | { | |
2080 | #if 0 | |
2081 | /* FIXME: This discards ungetc() and pre-read stuff which is | |
2082 | not right if this is just a "sync" from a layer above | |
2083 | Suspect right design is to do _this_ but not have layer above | |
2084 | flush this layer read-to-read | |
2085 | */ | |
2086 | /* Not writeable - sync by attempting a seek */ | |
2087 | int err = errno; | |
eaf8b698 | 2088 | if (PerlSIO_fseek(stdio,(Off_t) 0, SEEK_CUR) != 0) |
88b61e10 NIS |
2089 | errno = err; |
2090 | #endif | |
2091 | } | |
2092 | return 0; | |
9e353e3b NIS |
2093 | } |
2094 | ||
2095 | IV | |
06da4f11 NIS |
2096 | PerlIOStdio_fill(PerlIO *f) |
2097 | { | |
adb71456 | 2098 | dTHX; |
06da4f11 NIS |
2099 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
2100 | int c; | |
3789aae2 NIS |
2101 | /* fflush()ing read-only streams can cause trouble on some stdio-s */ |
2102 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
2103 | { | |
eaf8b698 | 2104 | if (PerlSIO_fflush(stdio) != 0) |
3789aae2 NIS |
2105 | return EOF; |
2106 | } | |
eaf8b698 NIS |
2107 | c = PerlSIO_fgetc(stdio); |
2108 | if (c == EOF || PerlSIO_ungetc(c,stdio) != c) | |
06da4f11 NIS |
2109 | return EOF; |
2110 | return 0; | |
2111 | } | |
2112 | ||
2113 | IV | |
9e353e3b NIS |
2114 | PerlIOStdio_eof(PerlIO *f) |
2115 | { | |
adb71456 | 2116 | dTHX; |
eaf8b698 | 2117 | return PerlSIO_feof(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
2118 | } |
2119 | ||
2120 | IV | |
2121 | PerlIOStdio_error(PerlIO *f) | |
2122 | { | |
adb71456 | 2123 | dTHX; |
eaf8b698 | 2124 | return PerlSIO_ferror(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
2125 | } |
2126 | ||
2127 | void | |
2128 | PerlIOStdio_clearerr(PerlIO *f) | |
2129 | { | |
adb71456 | 2130 | dTHX; |
eaf8b698 | 2131 | PerlSIO_clearerr(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b NIS |
2132 | } |
2133 | ||
2134 | void | |
2135 | PerlIOStdio_setlinebuf(PerlIO *f) | |
2136 | { | |
adb71456 | 2137 | dTHX; |
9e353e3b | 2138 | #ifdef HAS_SETLINEBUF |
eaf8b698 | 2139 | PerlSIO_setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b | 2140 | #else |
eaf8b698 | 2141 | PerlSIO_setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0); |
9e353e3b NIS |
2142 | #endif |
2143 | } | |
2144 | ||
2145 | #ifdef FILE_base | |
2146 | STDCHAR * | |
2147 | PerlIOStdio_get_base(PerlIO *f) | |
2148 | { | |
adb71456 | 2149 | dTHX; |
9e353e3b | 2150 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 2151 | return PerlSIO_get_base(stdio); |
9e353e3b NIS |
2152 | } |
2153 | ||
2154 | Size_t | |
2155 | PerlIOStdio_get_bufsiz(PerlIO *f) | |
2156 | { | |
adb71456 | 2157 | dTHX; |
9e353e3b | 2158 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 2159 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
2160 | } |
2161 | #endif | |
2162 | ||
2163 | #ifdef USE_STDIO_PTR | |
2164 | STDCHAR * | |
2165 | PerlIOStdio_get_ptr(PerlIO *f) | |
2166 | { | |
adb71456 | 2167 | dTHX; |
9e353e3b | 2168 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 2169 | return PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
2170 | } |
2171 | ||
2172 | SSize_t | |
2173 | PerlIOStdio_get_cnt(PerlIO *f) | |
2174 | { | |
adb71456 | 2175 | dTHX; |
9e353e3b | 2176 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 | 2177 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
2178 | } |
2179 | ||
2180 | void | |
2181 | PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt) | |
2182 | { | |
adb71456 | 2183 | dTHX; |
9e353e3b NIS |
2184 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
2185 | if (ptr != NULL) | |
2186 | { | |
2187 | #ifdef STDIO_PTR_LVALUE | |
eaf8b698 | 2188 | PerlSIO_set_ptr(stdio,ptr); |
9e353e3b | 2189 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
eaf8b698 | 2190 | if (PerlSIO_get_cnt(stdio) != (cnt)) |
9e353e3b NIS |
2191 | { |
2192 | dTHX; | |
eaf8b698 | 2193 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
2194 | } |
2195 | #endif | |
2196 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
2197 | /* Setting ptr _does_ change cnt - we are done */ | |
2198 | return; | |
2199 | #endif | |
2200 | #else /* STDIO_PTR_LVALUE */ | |
eaf8b698 | 2201 | PerlProc_abort(); |
9e353e3b NIS |
2202 | #endif /* STDIO_PTR_LVALUE */ |
2203 | } | |
2204 | /* Now (or only) set cnt */ | |
2205 | #ifdef STDIO_CNT_LVALUE | |
eaf8b698 | 2206 | PerlSIO_set_cnt(stdio,cnt); |
9e353e3b NIS |
2207 | #else /* STDIO_CNT_LVALUE */ |
2208 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) | |
eaf8b698 | 2209 | PerlSIO_set_ptr(stdio,PerlSIO_get_ptr(stdio)+(PerlSIO_get_cnt(stdio)-cnt)); |
9e353e3b | 2210 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
eaf8b698 | 2211 | PerlProc_abort(); |
9e353e3b NIS |
2212 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
2213 | #endif /* STDIO_CNT_LVALUE */ | |
2214 | } | |
2215 | ||
2216 | #endif | |
2217 | ||
2218 | PerlIO_funcs PerlIO_stdio = { | |
2219 | "stdio", | |
2220 | sizeof(PerlIOStdio), | |
f5b9d040 | 2221 | PERLIO_K_BUFFERED, |
06da4f11 NIS |
2222 | PerlIOBase_pushed, |
2223 | PerlIOBase_noop_ok, | |
e3f3bf95 NIS |
2224 | PerlIOStdio_open, |
2225 | NULL, | |
2226 | PerlIOStdio_fileno, | |
9e353e3b NIS |
2227 | PerlIOStdio_read, |
2228 | PerlIOStdio_unread, | |
2229 | PerlIOStdio_write, | |
2230 | PerlIOStdio_seek, | |
2231 | PerlIOStdio_tell, | |
2232 | PerlIOStdio_close, | |
2233 | PerlIOStdio_flush, | |
06da4f11 | 2234 | PerlIOStdio_fill, |
9e353e3b NIS |
2235 | PerlIOStdio_eof, |
2236 | PerlIOStdio_error, | |
2237 | PerlIOStdio_clearerr, | |
2238 | PerlIOStdio_setlinebuf, | |
2239 | #ifdef FILE_base | |
2240 | PerlIOStdio_get_base, | |
2241 | PerlIOStdio_get_bufsiz, | |
2242 | #else | |
2243 | NULL, | |
2244 | NULL, | |
2245 | #endif | |
2246 | #ifdef USE_STDIO_PTR | |
2247 | PerlIOStdio_get_ptr, | |
2248 | PerlIOStdio_get_cnt, | |
0eb1d8a4 | 2249 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) |
9e353e3b NIS |
2250 | PerlIOStdio_set_ptrcnt |
2251 | #else /* STDIO_PTR_LVALUE */ | |
2252 | NULL | |
2253 | #endif /* STDIO_PTR_LVALUE */ | |
2254 | #else /* USE_STDIO_PTR */ | |
2255 | NULL, | |
2256 | NULL, | |
2257 | NULL | |
2258 | #endif /* USE_STDIO_PTR */ | |
2259 | }; | |
2260 | ||
2261 | #undef PerlIO_exportFILE | |
2262 | FILE * | |
2263 | PerlIO_exportFILE(PerlIO *f, int fl) | |
2264 | { | |
f7e7eb72 | 2265 | FILE *stdio; |
9e353e3b | 2266 | PerlIO_flush(f); |
f7e7eb72 NIS |
2267 | stdio = fdopen(PerlIO_fileno(f),"r+"); |
2268 | if (stdio) | |
2269 | { | |
a999f61b | 2270 | dTHX; |
e3f3bf95 | 2271 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ f,&PerlIO_stdio,"r+",Nullsv),PerlIOStdio); |
f7e7eb72 NIS |
2272 | s->stdio = stdio; |
2273 | } | |
2274 | return stdio; | |
9e353e3b NIS |
2275 | } |
2276 | ||
2277 | #undef PerlIO_findFILE | |
2278 | FILE * | |
2279 | PerlIO_findFILE(PerlIO *f) | |
2280 | { | |
f7e7eb72 NIS |
2281 | PerlIOl *l = *f; |
2282 | while (l) | |
2283 | { | |
2284 | if (l->tab == &PerlIO_stdio) | |
2285 | { | |
2286 | PerlIOStdio *s = PerlIOSelf(&l,PerlIOStdio); | |
2287 | return s->stdio; | |
2288 | } | |
2289 | l = *PerlIONext(&l); | |
2290 | } | |
9e353e3b NIS |
2291 | return PerlIO_exportFILE(f,0); |
2292 | } | |
2293 | ||
2294 | #undef PerlIO_releaseFILE | |
2295 | void | |
2296 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
2297 | { | |
2298 | } | |
2299 | ||
2300 | /*--------------------------------------------------------------------------------------*/ | |
2301 | /* perlio buffer layer */ | |
2302 | ||
5e2ab84b | 2303 | IV |
e3f3bf95 | 2304 | PerlIOBuf_pushed(PerlIO *f, const char *mode, SV *arg) |
5e2ab84b NIS |
2305 | { |
2306 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
1f474064 NIS |
2307 | int fd = PerlIO_fileno(f); |
2308 | Off_t posn; | |
8c0134a8 | 2309 | dTHX; |
1f474064 NIS |
2310 | if (fd >= 0 && PerlLIO_isatty(fd)) |
2311 | { | |
2312 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
2313 | } | |
2314 | posn = PerlIO_tell(PerlIONext(f)); | |
2315 | if (posn != (Off_t) -1) | |
2316 | { | |
2317 | b->posn = posn; | |
2318 | } | |
e3f3bf95 | 2319 | return PerlIOBase_pushed(f,mode,arg); |
5e2ab84b NIS |
2320 | } |
2321 | ||
9e353e3b | 2322 | PerlIO * |
e3f3bf95 | 2323 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, AV *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
9e353e3b | 2324 | { |
6f9d8c32 NIS |
2325 | if (f) |
2326 | { | |
ee518936 | 2327 | PerlIO *next = PerlIONext(f); |
e3f3bf95 NIS |
2328 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n-2, PerlIOBase(next)->tab); |
2329 | next = (*tab->Open)(aTHX_ tab, layers, n-2, mode,fd,imode,perm,next,narg,args); | |
f6c77cf1 | 2330 | if (!next || (*PerlIOBase(f)->tab->Pushed)(f,mode,PerlIOArg) != 0) |
c7fc522f | 2331 | { |
ee518936 | 2332 | return NULL; |
a4d3c1d3 | 2333 | } |
6f9d8c32 | 2334 | } |
ee518936 | 2335 | else |
9e353e3b | 2336 | { |
e3f3bf95 | 2337 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n-2, PerlIO_default_btm()); |
ee518936 NIS |
2338 | int init = 0; |
2339 | if (*mode == 'I') | |
2340 | { | |
2341 | init = 1; | |
2342 | mode++; | |
2343 | } | |
e3f3bf95 | 2344 | f = (*tab->Open)(aTHX_ tab, layers, n-2, mode,fd,imode,perm,NULL,narg,args); |
ee518936 NIS |
2345 | if (f) |
2346 | { | |
f6c77cf1 | 2347 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(aTHX_ f,self,mode,PerlIOArg),PerlIOBuf); |
ee518936 NIS |
2348 | fd = PerlIO_fileno(f); |
2349 | #if O_BINARY != O_TEXT | |
2350 | /* do something about failing setmode()? --jhi */ | |
2351 | PerlLIO_setmode(fd , O_BINARY); | |
2352 | #endif | |
2353 | if (init && fd == 2) | |
2354 | { | |
2355 | /* Initial stderr is unbuffered */ | |
2356 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
2357 | } | |
2358 | } | |
9e353e3b NIS |
2359 | } |
2360 | return f; | |
2361 | } | |
2362 | ||
9e353e3b NIS |
2363 | /* This "flush" is akin to sfio's sync in that it handles files in either |
2364 | read or write state | |
2365 | */ | |
2366 | IV | |
2367 | PerlIOBuf_flush(PerlIO *f) | |
6f9d8c32 | 2368 | { |
9e353e3b NIS |
2369 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2370 | int code = 0; | |
2371 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
2372 | { | |
2373 | /* write() the buffer */ | |
a5262162 | 2374 | STDCHAR *buf = b->buf; |
33af2bc7 | 2375 | STDCHAR *p = buf; |
3789aae2 | 2376 | PerlIO *n = PerlIONext(f); |
9e353e3b NIS |
2377 | while (p < b->ptr) |
2378 | { | |
4b803d04 | 2379 | SSize_t count = PerlIO_write(n,p,b->ptr - p); |
9e353e3b NIS |
2380 | if (count > 0) |
2381 | { | |
2382 | p += count; | |
2383 | } | |
3789aae2 | 2384 | else if (count < 0 || PerlIO_error(n)) |
9e353e3b NIS |
2385 | { |
2386 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2387 | code = -1; | |
2388 | break; | |
2389 | } | |
2390 | } | |
33af2bc7 | 2391 | b->posn += (p - buf); |
9e353e3b NIS |
2392 | } |
2393 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
6f9d8c32 | 2394 | { |
33af2bc7 | 2395 | STDCHAR *buf = PerlIO_get_base(f); |
9e353e3b | 2396 | /* Note position change */ |
33af2bc7 | 2397 | b->posn += (b->ptr - buf); |
9e353e3b NIS |
2398 | if (b->ptr < b->end) |
2399 | { | |
2400 | /* We did not consume all of it */ | |
2401 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0) | |
2402 | { | |
2403 | b->posn = PerlIO_tell(PerlIONext(f)); | |
2404 | } | |
2405 | } | |
6f9d8c32 | 2406 | } |
9e353e3b NIS |
2407 | b->ptr = b->end = b->buf; |
2408 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); | |
88b61e10 | 2409 | /* FIXME: Is this right for read case ? */ |
9e353e3b NIS |
2410 | if (PerlIO_flush(PerlIONext(f)) != 0) |
2411 | code = -1; | |
2412 | return code; | |
6f9d8c32 NIS |
2413 | } |
2414 | ||
06da4f11 NIS |
2415 | IV |
2416 | PerlIOBuf_fill(PerlIO *f) | |
2417 | { | |
2418 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
88b61e10 | 2419 | PerlIO *n = PerlIONext(f); |
06da4f11 | 2420 | SSize_t avail; |
88b61e10 NIS |
2421 | /* FIXME: doing the down-stream flush is a bad idea if it causes |
2422 | pre-read data in stdio buffer to be discarded | |
2423 | but this is too simplistic - as it skips _our_ hosekeeping | |
2424 | and breaks tell tests. | |
2425 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) | |
2426 | { | |
2427 | } | |
2428 | */ | |
06da4f11 NIS |
2429 | if (PerlIO_flush(f) != 0) |
2430 | return -1; | |
88b61e10 | 2431 | |
a5262162 NIS |
2432 | if (!b->buf) |
2433 | PerlIO_get_base(f); /* allocate via vtable */ | |
2434 | ||
2435 | b->ptr = b->end = b->buf; | |
88b61e10 NIS |
2436 | if (PerlIO_fast_gets(n)) |
2437 | { | |
2438 | /* Layer below is also buffered | |
2439 | * We do _NOT_ want to call its ->Read() because that will loop | |
2440 | * till it gets what we asked for which may hang on a pipe etc. | |
2441 | * Instead take anything it has to hand, or ask it to fill _once_. | |
2442 | */ | |
2443 | avail = PerlIO_get_cnt(n); | |
2444 | if (avail <= 0) | |
2445 | { | |
2446 | avail = PerlIO_fill(n); | |
2447 | if (avail == 0) | |
2448 | avail = PerlIO_get_cnt(n); | |
2449 | else | |
2450 | { | |
2451 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
2452 | avail = 0; | |
2453 | } | |
2454 | } | |
2455 | if (avail > 0) | |
2456 | { | |
2457 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
2458 | SSize_t cnt = avail; | |
2459 | if (avail > b->bufsiz) | |
2460 | avail = b->bufsiz; | |
2461 | Copy(ptr,b->buf,avail,STDCHAR); | |
2462 | PerlIO_set_ptrcnt(n,ptr+avail,cnt-avail); | |
2463 | } | |
2464 | } | |
2465 | else | |
2466 | { | |
2467 | avail = PerlIO_read(n,b->ptr,b->bufsiz); | |
2468 | } | |
06da4f11 NIS |
2469 | if (avail <= 0) |
2470 | { | |
2471 | if (avail == 0) | |
2472 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
2473 | else | |
2474 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2475 | return -1; | |
2476 | } | |
a5262162 | 2477 | b->end = b->buf+avail; |
06da4f11 NIS |
2478 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
2479 | return 0; | |
2480 | } | |
2481 | ||
6f9d8c32 | 2482 | SSize_t |
9e353e3b | 2483 | PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 2484 | { |
99efab12 | 2485 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
6f9d8c32 NIS |
2486 | if (f) |
2487 | { | |
9e353e3b | 2488 | if (!b->ptr) |
06da4f11 | 2489 | PerlIO_get_base(f); |
f6c77cf1 | 2490 | return PerlIOBase_read(f,vbuf,count); |
6f9d8c32 NIS |
2491 | } |
2492 | return 0; | |
2493 | } | |
2494 | ||
9e353e3b NIS |
2495 | SSize_t |
2496 | PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 2497 | { |
9e353e3b NIS |
2498 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
2499 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2500 | SSize_t unread = 0; | |
2501 | SSize_t avail; | |
9e353e3b NIS |
2502 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
2503 | PerlIO_flush(f); | |
06da4f11 NIS |
2504 | if (!b->buf) |
2505 | PerlIO_get_base(f); | |
9e353e3b NIS |
2506 | if (b->buf) |
2507 | { | |
2508 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
2509 | { | |
2510 | avail = (b->ptr - b->buf); | |
9e353e3b NIS |
2511 | } |
2512 | else | |
2513 | { | |
2514 | avail = b->bufsiz; | |
5e2ab84b NIS |
2515 | b->end = b->buf + avail; |
2516 | b->ptr = b->end; | |
2517 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
2518 | b->posn -= b->bufsiz; | |
9e353e3b | 2519 | } |
5e2ab84b NIS |
2520 | if (avail > (SSize_t) count) |
2521 | avail = count; | |
9e353e3b NIS |
2522 | if (avail > 0) |
2523 | { | |
5e2ab84b | 2524 | b->ptr -= avail; |
9e353e3b NIS |
2525 | buf -= avail; |
2526 | if (buf != b->ptr) | |
2527 | { | |
88b61e10 | 2528 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b NIS |
2529 | } |
2530 | count -= avail; | |
2531 | unread += avail; | |
2532 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; | |
2533 | } | |
2534 | } | |
2535 | return unread; | |
760ac839 LW |
2536 | } |
2537 | ||
9e353e3b NIS |
2538 | SSize_t |
2539 | PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count) | |
760ac839 | 2540 | { |
9e353e3b NIS |
2541 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2542 | const STDCHAR *buf = (const STDCHAR *) vbuf; | |
2543 | Size_t written = 0; | |
2544 | if (!b->buf) | |
06da4f11 | 2545 | PerlIO_get_base(f); |
9e353e3b NIS |
2546 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
2547 | return 0; | |
2548 | while (count > 0) | |
2549 | { | |
2550 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
2551 | if ((SSize_t) count < avail) | |
2552 | avail = count; | |
2553 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; | |
2554 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) | |
2555 | { | |
2556 | while (avail > 0) | |
2557 | { | |
2558 | int ch = *buf++; | |
2559 | *(b->ptr)++ = ch; | |
2560 | count--; | |
2561 | avail--; | |
2562 | written++; | |
2563 | if (ch == '\n') | |
2564 | { | |
2565 | PerlIO_flush(f); | |
2566 | break; | |
2567 | } | |
2568 | } | |
2569 | } | |
2570 | else | |
2571 | { | |
2572 | if (avail) | |
2573 | { | |
88b61e10 | 2574 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b NIS |
2575 | count -= avail; |
2576 | buf += avail; | |
2577 | written += avail; | |
2578 | b->ptr += avail; | |
2579 | } | |
2580 | } | |
2581 | if (b->ptr >= (b->buf + b->bufsiz)) | |
2582 | PerlIO_flush(f); | |
2583 | } | |
f5b9d040 NIS |
2584 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) |
2585 | PerlIO_flush(f); | |
9e353e3b NIS |
2586 | return written; |
2587 | } | |
2588 | ||
2589 | IV | |
2590 | PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence) | |
2591 | { | |
5e2ab84b NIS |
2592 | IV code; |
2593 | if ((code = PerlIO_flush(f)) == 0) | |
9e353e3b | 2594 | { |
5e2ab84b | 2595 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
9e353e3b NIS |
2596 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2597 | code = PerlIO_seek(PerlIONext(f),offset,whence); | |
2598 | if (code == 0) | |
2599 | { | |
2600 | b->posn = PerlIO_tell(PerlIONext(f)); | |
2601 | } | |
2602 | } | |
2603 | return code; | |
2604 | } | |
2605 | ||
2606 | Off_t | |
2607 | PerlIOBuf_tell(PerlIO *f) | |
2608 | { | |
2609 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2610 | Off_t posn = b->posn; | |
2611 | if (b->buf) | |
2612 | posn += (b->ptr - b->buf); | |
2613 | return posn; | |
2614 | } | |
2615 | ||
2616 | IV | |
2617 | PerlIOBuf_close(PerlIO *f) | |
2618 | { | |
5f1a76d0 | 2619 | dTHX; |
9e353e3b NIS |
2620 | IV code = PerlIOBase_close(f); |
2621 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2622 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) | |
6f9d8c32 | 2623 | { |
5f1a76d0 | 2624 | PerlMemShared_free(b->buf); |
6f9d8c32 | 2625 | } |
9e353e3b NIS |
2626 | b->buf = NULL; |
2627 | b->ptr = b->end = b->buf; | |
2628 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); | |
2629 | return code; | |
760ac839 LW |
2630 | } |
2631 | ||
9e353e3b NIS |
2632 | STDCHAR * |
2633 | PerlIOBuf_get_ptr(PerlIO *f) | |
2634 | { | |
2635 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2636 | if (!b->buf) | |
06da4f11 | 2637 | PerlIO_get_base(f); |
9e353e3b NIS |
2638 | return b->ptr; |
2639 | } | |
2640 | ||
05d1247b | 2641 | SSize_t |
9e353e3b NIS |
2642 | PerlIOBuf_get_cnt(PerlIO *f) |
2643 | { | |
2644 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2645 | if (!b->buf) | |
06da4f11 | 2646 | PerlIO_get_base(f); |
9e353e3b NIS |
2647 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
2648 | return (b->end - b->ptr); | |
2649 | return 0; | |
2650 | } | |
2651 | ||
2652 | STDCHAR * | |
2653 | PerlIOBuf_get_base(PerlIO *f) | |
2654 | { | |
2655 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2656 | if (!b->buf) | |
06da4f11 | 2657 | { |
5f1a76d0 | 2658 | dTHX; |
06da4f11 NIS |
2659 | if (!b->bufsiz) |
2660 | b->bufsiz = 4096; | |
5f1a76d0 | 2661 | b->buf = PerlMemShared_calloc(b->bufsiz,sizeof(STDCHAR)); |
06da4f11 NIS |
2662 | if (!b->buf) |
2663 | { | |
2664 | b->buf = (STDCHAR *)&b->oneword; | |
2665 | b->bufsiz = sizeof(b->oneword); | |
2666 | } | |
2667 | b->ptr = b->buf; | |
2668 | b->end = b->ptr; | |
2669 | } | |
9e353e3b NIS |
2670 | return b->buf; |
2671 | } | |
2672 | ||
2673 | Size_t | |
2674 | PerlIOBuf_bufsiz(PerlIO *f) | |
2675 | { | |
2676 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2677 | if (!b->buf) | |
06da4f11 | 2678 | PerlIO_get_base(f); |
9e353e3b NIS |
2679 | return (b->end - b->buf); |
2680 | } | |
2681 | ||
2682 | void | |
05d1247b | 2683 | PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
9e353e3b NIS |
2684 | { |
2685 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2686 | if (!b->buf) | |
06da4f11 | 2687 | PerlIO_get_base(f); |
9e353e3b NIS |
2688 | b->ptr = ptr; |
2689 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) | |
6f9d8c32 | 2690 | { |
9e353e3b NIS |
2691 | dTHX; |
2692 | assert(PerlIO_get_cnt(f) == cnt); | |
2693 | assert(b->ptr >= b->buf); | |
6f9d8c32 | 2694 | } |
9e353e3b | 2695 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
2696 | } |
2697 | ||
9e353e3b NIS |
2698 | PerlIO_funcs PerlIO_perlio = { |
2699 | "perlio", | |
2700 | sizeof(PerlIOBuf), | |
f5b9d040 | 2701 | PERLIO_K_BUFFERED, |
5e2ab84b | 2702 | PerlIOBuf_pushed, |
06da4f11 | 2703 | PerlIOBase_noop_ok, |
e3f3bf95 NIS |
2704 | PerlIOBuf_open, |
2705 | NULL, | |
2706 | PerlIOBase_fileno, | |
9e353e3b NIS |
2707 | PerlIOBuf_read, |
2708 | PerlIOBuf_unread, | |
2709 | PerlIOBuf_write, | |
2710 | PerlIOBuf_seek, | |
2711 | PerlIOBuf_tell, | |
2712 | PerlIOBuf_close, | |
2713 | PerlIOBuf_flush, | |
06da4f11 | 2714 | PerlIOBuf_fill, |
9e353e3b NIS |
2715 | PerlIOBase_eof, |
2716 | PerlIOBase_error, | |
2717 | PerlIOBase_clearerr, | |
f6c77cf1 | 2718 | PerlIOBase_setlinebuf, |
9e353e3b NIS |
2719 | PerlIOBuf_get_base, |
2720 | PerlIOBuf_bufsiz, | |
2721 | PerlIOBuf_get_ptr, | |
2722 | PerlIOBuf_get_cnt, | |
2723 | PerlIOBuf_set_ptrcnt, | |
2724 | }; | |
2725 | ||
66ecd56b | 2726 | /*--------------------------------------------------------------------------------------*/ |
5e2ab84b NIS |
2727 | /* Temp layer to hold unread chars when cannot do it any other way */ |
2728 | ||
2729 | IV | |
2730 | PerlIOPending_fill(PerlIO *f) | |
2731 | { | |
2732 | /* Should never happen */ | |
2733 | PerlIO_flush(f); | |
2734 | return 0; | |
2735 | } | |
2736 | ||
2737 | IV | |
2738 | PerlIOPending_close(PerlIO *f) | |
2739 | { | |
2740 | /* A tad tricky - flush pops us, then we close new top */ | |
2741 | PerlIO_flush(f); | |
2742 | return PerlIO_close(f); | |
2743 | } | |
2744 | ||
2745 | IV | |
2746 | PerlIOPending_seek(PerlIO *f, Off_t offset, int whence) | |
2747 | { | |
2748 | /* A tad tricky - flush pops us, then we seek new top */ | |
2749 | PerlIO_flush(f); | |
2750 | return PerlIO_seek(f,offset,whence); | |
2751 | } | |
2752 | ||
2753 | ||
2754 | IV | |
2755 | PerlIOPending_flush(PerlIO *f) | |
2756 | { | |
a999f61b | 2757 | dTHX; |
5e2ab84b NIS |
2758 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2759 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) | |
2760 | { | |
5f1a76d0 | 2761 | PerlMemShared_free(b->buf); |
5e2ab84b NIS |
2762 | b->buf = NULL; |
2763 | } | |
a999f61b | 2764 | PerlIO_pop(aTHX_ f); |
5e2ab84b NIS |
2765 | return 0; |
2766 | } | |
2767 | ||
2768 | void | |
2769 | PerlIOPending_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) | |
2770 | { | |
2771 | if (cnt <= 0) | |
2772 | { | |
2773 | PerlIO_flush(f); | |
2774 | } | |
2775 | else | |
2776 | { | |
2777 | PerlIOBuf_set_ptrcnt(f,ptr,cnt); | |
2778 | } | |
2779 | } | |
2780 | ||
2781 | IV | |
e3f3bf95 | 2782 | PerlIOPending_pushed(PerlIO *f,const char *mode,SV *arg) |
5e2ab84b | 2783 | { |
e3f3bf95 | 2784 | IV code = PerlIOBase_pushed(f,mode,arg); |
5e2ab84b NIS |
2785 | PerlIOl *l = PerlIOBase(f); |
2786 | /* Our PerlIO_fast_gets must match what we are pushed on, | |
2787 | or sv_gets() etc. get muddled when it changes mid-string | |
2788 | when we auto-pop. | |
2789 | */ | |
72e44f29 NIS |
2790 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS|PERLIO_F_UTF8)) | |
2791 | (PerlIOBase(PerlIONext(f))->flags & (PERLIO_F_FASTGETS|PERLIO_F_UTF8)); | |
5e2ab84b NIS |
2792 | return code; |
2793 | } | |
2794 | ||
2795 | SSize_t | |
2796 | PerlIOPending_read(PerlIO *f, void *vbuf, Size_t count) | |
2797 | { | |
2798 | SSize_t avail = PerlIO_get_cnt(f); | |
2799 | SSize_t got = 0; | |
2800 | if (count < avail) | |
2801 | avail = count; | |
2802 | if (avail > 0) | |
2803 | got = PerlIOBuf_read(f,vbuf,avail); | |
1f474064 NIS |
2804 | if (got >= 0 && got < count) |
2805 | { | |
2806 | SSize_t more = PerlIO_read(f,((STDCHAR *) vbuf)+got,count-got); | |
2807 | if (more >= 0 || got == 0) | |
2808 | got += more; | |
2809 | } | |
5e2ab84b NIS |
2810 | return got; |
2811 | } | |
2812 | ||
5e2ab84b NIS |
2813 | PerlIO_funcs PerlIO_pending = { |
2814 | "pending", | |
2815 | sizeof(PerlIOBuf), | |
2816 | PERLIO_K_BUFFERED, | |
5e2ab84b NIS |
2817 | PerlIOPending_pushed, |
2818 | PerlIOBase_noop_ok, | |
e3f3bf95 NIS |
2819 | NULL, |
2820 | NULL, | |
2821 | PerlIOBase_fileno, | |
5e2ab84b NIS |
2822 | PerlIOPending_read, |
2823 | PerlIOBuf_unread, | |
2824 | PerlIOBuf_write, | |
2825 | PerlIOPending_seek, | |
2826 | PerlIOBuf_tell, | |
2827 | PerlIOPending_close, | |
2828 | PerlIOPending_flush, | |
2829 | PerlIOPending_fill, | |
2830 | PerlIOBase_eof, | |
2831 | PerlIOBase_error, | |
2832 | PerlIOBase_clearerr, | |
f6c77cf1 | 2833 | PerlIOBase_setlinebuf, |
5e2ab84b NIS |
2834 | PerlIOBuf_get_base, |
2835 | PerlIOBuf_bufsiz, | |
2836 | PerlIOBuf_get_ptr, | |
2837 | PerlIOBuf_get_cnt, | |
2838 | PerlIOPending_set_ptrcnt, | |
2839 | }; | |
2840 | ||
2841 | ||
2842 | ||
2843 | /*--------------------------------------------------------------------------------------*/ | |
99efab12 NIS |
2844 | /* crlf - translation |
2845 | On read translate CR,LF to "\n" we do this by overriding ptr/cnt entries | |
60382766 | 2846 | to hand back a line at a time and keeping a record of which nl we "lied" about. |
99efab12 | 2847 | On write translate "\n" to CR,LF |
66ecd56b NIS |
2848 | */ |
2849 | ||
99efab12 NIS |
2850 | typedef struct |
2851 | { | |
2852 | PerlIOBuf base; /* PerlIOBuf stuff */ | |
60382766 | 2853 | STDCHAR *nl; /* Position of crlf we "lied" about in the buffer */ |
99efab12 NIS |
2854 | } PerlIOCrlf; |
2855 | ||
f5b9d040 | 2856 | IV |
e3f3bf95 | 2857 | PerlIOCrlf_pushed(PerlIO *f, const char *mode,SV *arg) |
f5b9d040 NIS |
2858 | { |
2859 | IV code; | |
2860 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
e3f3bf95 | 2861 | code = PerlIOBuf_pushed(f,mode,arg); |
5e2ab84b | 2862 | #if 0 |
4659c93f | 2863 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08"UVxf"\n", |
f5b9d040 | 2864 | f,PerlIOBase(f)->tab->name,(mode) ? mode : "(Null)", |
a4d3c1d3 | 2865 | PerlIOBase(f)->flags); |
5e2ab84b | 2866 | #endif |
f5b9d040 NIS |
2867 | return code; |
2868 | } | |
2869 | ||
2870 | ||
99efab12 NIS |
2871 | SSize_t |
2872 | PerlIOCrlf_unread(PerlIO *f, const void *vbuf, Size_t count) | |
2873 | { | |
60382766 | 2874 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
60382766 NIS |
2875 | if (c->nl) |
2876 | { | |
2877 | *(c->nl) = 0xd; | |
2878 | c->nl = NULL; | |
2879 | } | |
f5b9d040 NIS |
2880 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
2881 | return PerlIOBuf_unread(f,vbuf,count); | |
2882 | else | |
99efab12 | 2883 | { |
a4d3c1d3 | 2884 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
f5b9d040 NIS |
2885 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2886 | SSize_t unread = 0; | |
2887 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
2888 | PerlIO_flush(f); | |
2889 | if (!b->buf) | |
2890 | PerlIO_get_base(f); | |
2891 | if (b->buf) | |
99efab12 | 2892 | { |
f5b9d040 | 2893 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
99efab12 | 2894 | { |
f5b9d040 NIS |
2895 | b->end = b->ptr = b->buf + b->bufsiz; |
2896 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
5e2ab84b | 2897 | b->posn -= b->bufsiz; |
f5b9d040 NIS |
2898 | } |
2899 | while (count > 0 && b->ptr > b->buf) | |
2900 | { | |
2901 | int ch = *--buf; | |
2902 | if (ch == '\n') | |
99efab12 | 2903 | { |
f5b9d040 NIS |
2904 | if (b->ptr - 2 >= b->buf) |
2905 | { | |
2906 | *--(b->ptr) = 0xa; | |
2907 | *--(b->ptr) = 0xd; | |
2908 | unread++; | |
2909 | count--; | |
2910 | } | |
2911 | else | |
2912 | { | |
2913 | buf++; | |
2914 | break; | |
2915 | } | |
99efab12 NIS |
2916 | } |
2917 | else | |
2918 | { | |
f5b9d040 NIS |
2919 | *--(b->ptr) = ch; |
2920 | unread++; | |
2921 | count--; | |
99efab12 NIS |
2922 | } |
2923 | } | |
99efab12 | 2924 | } |
f5b9d040 | 2925 | return unread; |
99efab12 | 2926 | } |
99efab12 NIS |
2927 | } |
2928 | ||
2929 | SSize_t | |
2930 | PerlIOCrlf_get_cnt(PerlIO *f) | |
2931 | { | |
2932 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2933 | if (!b->buf) | |
2934 | PerlIO_get_base(f); | |
2935 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
2936 | { | |
2937 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); | |
f5b9d040 | 2938 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && !c->nl) |
99efab12 NIS |
2939 | { |
2940 | STDCHAR *nl = b->ptr; | |
60382766 | 2941 | scan: |
99efab12 NIS |
2942 | while (nl < b->end && *nl != 0xd) |
2943 | nl++; | |
2944 | if (nl < b->end && *nl == 0xd) | |
2945 | { | |
60382766 | 2946 | test: |
99efab12 NIS |
2947 | if (nl+1 < b->end) |
2948 | { | |
2949 | if (nl[1] == 0xa) | |
2950 | { | |
2951 | *nl = '\n'; | |
60382766 | 2952 | c->nl = nl; |
99efab12 | 2953 | } |
60382766 | 2954 | else |
99efab12 NIS |
2955 | { |
2956 | /* Not CR,LF but just CR */ | |
2957 | nl++; | |
60382766 | 2958 | goto scan; |
99efab12 NIS |
2959 | } |
2960 | } | |
2961 | else | |
2962 | { | |
60382766 | 2963 | /* Blast - found CR as last char in buffer */ |
99efab12 NIS |
2964 | if (b->ptr < nl) |
2965 | { | |
2966 | /* They may not care, defer work as long as possible */ | |
60382766 | 2967 | return (nl - b->ptr); |
99efab12 NIS |
2968 | } |
2969 | else | |
2970 | { | |
2971 | int code; | |
2972 | dTHX; | |
99efab12 NIS |
2973 | b->ptr++; /* say we have read it as far as flush() is concerned */ |
2974 | b->buf++; /* Leave space an front of buffer */ | |
2975 | b->bufsiz--; /* Buffer is thus smaller */ | |
2976 | code = PerlIO_fill(f); /* Fetch some more */ | |
2977 | b->bufsiz++; /* Restore size for next time */ | |
2978 | b->buf--; /* Point at space */ | |
2979 | b->ptr = nl = b->buf; /* Which is what we hand off */ | |
2980 | b->posn--; /* Buffer starts here */ | |
2981 | *nl = 0xd; /* Fill in the CR */ | |
60382766 | 2982 | if (code == 0) |
99efab12 NIS |
2983 | goto test; /* fill() call worked */ |
2984 | /* CR at EOF - just fall through */ | |
2985 | } | |
2986 | } | |
60382766 NIS |
2987 | } |
2988 | } | |
99efab12 NIS |
2989 | return (((c->nl) ? (c->nl+1) : b->end) - b->ptr); |
2990 | } | |
2991 | return 0; | |
2992 | } | |
2993 | ||
2994 | void | |
2995 | PerlIOCrlf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) | |
2996 | { | |
2997 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
2998 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); | |
f5b9d040 | 2999 | IV flags = PerlIOBase(f)->flags; |
99efab12 NIS |
3000 | if (!b->buf) |
3001 | PerlIO_get_base(f); | |
3002 | if (!ptr) | |
60382766 | 3003 | { |
63dbdb06 NIS |
3004 | if (c->nl) |
3005 | ptr = c->nl+1; | |
3006 | else | |
3007 | { | |
3008 | ptr = b->end; | |
f5b9d040 | 3009 | if ((flags & PERLIO_F_CRLF) && ptr > b->buf && ptr[-1] == 0xd) |
63dbdb06 NIS |
3010 | ptr--; |
3011 | } | |
3012 | ptr -= cnt; | |
60382766 NIS |
3013 | } |
3014 | else | |
3015 | { | |
63dbdb06 NIS |
3016 | /* Test code - delete when it works ... */ |
3017 | STDCHAR *chk; | |
3018 | if (c->nl) | |
3019 | chk = c->nl+1; | |
3020 | else | |
3021 | { | |
3022 | chk = b->end; | |
f5b9d040 | 3023 | if ((flags & PERLIO_F_CRLF) && chk > b->buf && chk[-1] == 0xd) |
63dbdb06 NIS |
3024 | chk--; |
3025 | } | |
3026 | chk -= cnt; | |
a4d3c1d3 | 3027 | |
63dbdb06 NIS |
3028 | if (ptr != chk) |
3029 | { | |
3030 | dTHX; | |
4659c93f | 3031 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08"UVxf" nl=%p e=%p for %d", |
a4d3c1d3 | 3032 | ptr, chk, flags, c->nl, b->end, cnt); |
63dbdb06 | 3033 | } |
60382766 | 3034 | } |
99efab12 NIS |
3035 | if (c->nl) |
3036 | { | |
3037 | if (ptr > c->nl) | |
3038 | { | |
3039 | /* They have taken what we lied about */ | |
3040 | *(c->nl) = 0xd; | |
3041 | c->nl = NULL; | |
3042 | ptr++; | |
60382766 | 3043 | } |
99efab12 NIS |
3044 | } |
3045 | b->ptr = ptr; | |
3046 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3047 | } | |
3048 | ||
3049 | SSize_t | |
3050 | PerlIOCrlf_write(PerlIO *f, const void *vbuf, Size_t count) | |
3051 | { | |
f5b9d040 NIS |
3052 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
3053 | return PerlIOBuf_write(f,vbuf,count); | |
3054 | else | |
99efab12 | 3055 | { |
a4d3c1d3 | 3056 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
f5b9d040 NIS |
3057 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
3058 | const STDCHAR *ebuf = buf+count; | |
3059 | if (!b->buf) | |
3060 | PerlIO_get_base(f); | |
3061 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3062 | return 0; | |
3063 | while (buf < ebuf) | |
99efab12 | 3064 | { |
f5b9d040 NIS |
3065 | STDCHAR *eptr = b->buf+b->bufsiz; |
3066 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; | |
3067 | while (buf < ebuf && b->ptr < eptr) | |
99efab12 | 3068 | { |
f5b9d040 | 3069 | if (*buf == '\n') |
60382766 | 3070 | { |
f5b9d040 | 3071 | if ((b->ptr + 2) > eptr) |
60382766 | 3072 | { |
f5b9d040 | 3073 | /* Not room for both */ |
60382766 NIS |
3074 | PerlIO_flush(f); |
3075 | break; | |
3076 | } | |
f5b9d040 NIS |
3077 | else |
3078 | { | |
3079 | *(b->ptr)++ = 0xd; /* CR */ | |
3080 | *(b->ptr)++ = 0xa; /* LF */ | |
3081 | buf++; | |
3082 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) | |
3083 | { | |
3084 | PerlIO_flush(f); | |
3085 | break; | |
3086 | } | |
3087 | } | |
3088 | } | |
3089 | else | |
3090 | { | |
3091 | int ch = *buf++; | |
3092 | *(b->ptr)++ = ch; | |
3093 | } | |
3094 | if (b->ptr >= eptr) | |
3095 | { | |
3096 | PerlIO_flush(f); | |
3097 | break; | |
99efab12 | 3098 | } |
99efab12 NIS |
3099 | } |
3100 | } | |
f5b9d040 NIS |
3101 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) |
3102 | PerlIO_flush(f); | |
3103 | return (buf - (STDCHAR *) vbuf); | |
99efab12 | 3104 | } |
99efab12 NIS |
3105 | } |
3106 | ||
3107 | IV | |
3108 | PerlIOCrlf_flush(PerlIO *f) | |
3109 | { | |
3110 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); | |
3111 | if (c->nl) | |
3112 | { | |
99efab12 | 3113 | *(c->nl) = 0xd; |
60382766 | 3114 | c->nl = NULL; |
99efab12 NIS |
3115 | } |
3116 | return PerlIOBuf_flush(f); | |
3117 | } | |
3118 | ||
66ecd56b NIS |
3119 | PerlIO_funcs PerlIO_crlf = { |
3120 | "crlf", | |
99efab12 | 3121 | sizeof(PerlIOCrlf), |
f5b9d040 | 3122 | PERLIO_K_BUFFERED|PERLIO_K_CANCRLF, |
f5b9d040 | 3123 | PerlIOCrlf_pushed, |
99efab12 | 3124 | PerlIOBase_noop_ok, /* popped */ |
e3f3bf95 NIS |
3125 | PerlIOBuf_open, |
3126 | NULL, | |
3127 | PerlIOBase_fileno, | |
99efab12 NIS |
3128 | PerlIOBuf_read, /* generic read works with ptr/cnt lies ... */ |
3129 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ | |
3130 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
66ecd56b NIS |
3131 | PerlIOBuf_seek, |
3132 | PerlIOBuf_tell, | |
3133 | PerlIOBuf_close, | |
99efab12 | 3134 | PerlIOCrlf_flush, |
66ecd56b NIS |
3135 | PerlIOBuf_fill, |
3136 | PerlIOBase_eof, | |
3137 | PerlIOBase_error, | |
3138 | PerlIOBase_clearerr, | |
f6c77cf1 | 3139 | PerlIOBase_setlinebuf, |
66ecd56b NIS |
3140 | PerlIOBuf_get_base, |
3141 | PerlIOBuf_bufsiz, | |
3142 | PerlIOBuf_get_ptr, | |
99efab12 NIS |
3143 | PerlIOCrlf_get_cnt, |
3144 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
3145 | }; |
3146 | ||
06da4f11 NIS |
3147 | #ifdef HAS_MMAP |
3148 | /*--------------------------------------------------------------------------------------*/ | |
3149 | /* mmap as "buffer" layer */ | |
3150 | ||
3151 | typedef struct | |
3152 | { | |
3153 | PerlIOBuf base; /* PerlIOBuf stuff */ | |
c3d7c7c9 | 3154 | Mmap_t mptr; /* Mapped address */ |
06da4f11 NIS |
3155 | Size_t len; /* mapped length */ |
3156 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
3157 | } PerlIOMmap; | |
3158 | ||
c3d7c7c9 NIS |
3159 | static size_t page_size = 0; |
3160 | ||
06da4f11 NIS |
3161 | IV |
3162 | PerlIOMmap_map(PerlIO *f) | |
3163 | { | |
68d873c6 | 3164 | dTHX; |
06da4f11 NIS |
3165 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
3166 | PerlIOBuf *b = &m->base; | |
3167 | IV flags = PerlIOBase(f)->flags; | |
3168 | IV code = 0; | |
3169 | if (m->len) | |
3170 | abort(); | |
3171 | if (flags & PERLIO_F_CANREAD) | |
3172 | { | |
3173 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
3174 | int fd = PerlIO_fileno(f); | |
3175 | struct stat st; | |
3176 | code = fstat(fd,&st); | |
3177 | if (code == 0 && S_ISREG(st.st_mode)) | |
3178 | { | |
3179 | SSize_t len = st.st_size - b->posn; | |
3180 | if (len > 0) | |
3181 | { | |
c3d7c7c9 | 3182 | Off_t posn; |
68d873c6 JH |
3183 | if (!page_size) { |
3184 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE)) | |
3185 | { | |
3186 | SETERRNO(0,SS$_NORMAL); | |
3187 | # ifdef _SC_PAGESIZE | |
3188 | page_size = sysconf(_SC_PAGESIZE); | |
3189 | # else | |
3190 | page_size = sysconf(_SC_PAGE_SIZE); | |
14aaf8e8 | 3191 | # endif |
68d873c6 JH |
3192 | if ((long)page_size < 0) { |
3193 | if (errno) { | |
3194 | SV *error = ERRSV; | |
3195 | char *msg; | |
3196 | STRLEN n_a; | |
3197 | (void)SvUPGRADE(error, SVt_PV); | |
3198 | msg = SvPVx(error, n_a); | |
14aaf8e8 | 3199 | Perl_croak(aTHX_ "panic: sysconf: %s", msg); |
68d873c6 JH |
3200 | } |
3201 | else | |
14aaf8e8 | 3202 | Perl_croak(aTHX_ "panic: sysconf: pagesize unknown"); |
68d873c6 JH |
3203 | } |
3204 | } | |
3205 | #else | |
3206 | # ifdef HAS_GETPAGESIZE | |
c3d7c7c9 | 3207 | page_size = getpagesize(); |
68d873c6 JH |
3208 | # else |
3209 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) | |
3210 | page_size = PAGESIZE; /* compiletime, bad */ | |
3211 | # endif | |
3212 | # endif | |
3213 | #endif | |
3214 | if ((IV)page_size <= 0) | |
14aaf8e8 | 3215 | Perl_croak(aTHX_ "panic: bad pagesize %"IVdf, (IV)page_size); |
68d873c6 | 3216 | } |
c3d7c7c9 NIS |
3217 | if (b->posn < 0) |
3218 | { | |
3219 | /* This is a hack - should never happen - open should have set it ! */ | |
3220 | b->posn = PerlIO_tell(PerlIONext(f)); | |
3221 | } | |
3222 | posn = (b->posn / page_size) * page_size; | |
3223 | len = st.st_size - posn; | |
a5262162 | 3224 | m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
c3d7c7c9 | 3225 | if (m->mptr && m->mptr != (Mmap_t) -1) |
06da4f11 | 3226 | { |
a5262162 | 3227 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
c3d7c7c9 | 3228 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 3229 | #endif |
a5262162 NIS |
3230 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
3231 | madvise(m->mptr, len, MADV_WILLNEED); | |
3232 | #endif | |
c3d7c7c9 NIS |
3233 | PerlIOBase(f)->flags = (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; |
3234 | b->end = ((STDCHAR *)m->mptr) + len; | |
3235 | b->buf = ((STDCHAR *)m->mptr) + (b->posn - posn); | |
3236 | b->ptr = b->buf; | |
3237 | m->len = len; | |
06da4f11 NIS |
3238 | } |
3239 | else | |
3240 | { | |
3241 | b->buf = NULL; | |
3242 | } | |
3243 | } | |
3244 | else | |
3245 | { | |
3246 | PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
3247 | b->buf = NULL; | |
3248 | b->ptr = b->end = b->ptr; | |
3249 | code = -1; | |
3250 | } | |
3251 | } | |
3252 | } | |
3253 | return code; | |
3254 | } | |
3255 | ||
3256 | IV | |
3257 | PerlIOMmap_unmap(PerlIO *f) | |
3258 | { | |
3259 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3260 | PerlIOBuf *b = &m->base; | |
3261 | IV code = 0; | |
3262 | if (m->len) | |
3263 | { | |
3264 | if (b->buf) | |
3265 | { | |
c3d7c7c9 NIS |
3266 | code = munmap(m->mptr, m->len); |
3267 | b->buf = NULL; | |
3268 | m->len = 0; | |
3269 | m->mptr = NULL; | |
06da4f11 NIS |
3270 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0) |
3271 | code = -1; | |
06da4f11 NIS |
3272 | } |
3273 | b->ptr = b->end = b->buf; | |
3274 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); | |
3275 | } | |
3276 | return code; | |
3277 | } | |
3278 | ||
3279 | STDCHAR * | |
3280 | PerlIOMmap_get_base(PerlIO *f) | |
3281 | { | |
3282 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3283 | PerlIOBuf *b = &m->base; | |
3284 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) | |
3285 | { | |
3286 | /* Already have a readbuffer in progress */ | |
3287 | return b->buf; | |
3288 | } | |
3289 | if (b->buf) | |
3290 | { | |
3291 | /* We have a write buffer or flushed PerlIOBuf read buffer */ | |
3292 | m->bbuf = b->buf; /* save it in case we need it again */ | |
3293 | b->buf = NULL; /* Clear to trigger below */ | |
3294 | } | |
3295 | if (!b->buf) | |
3296 | { | |
3297 | PerlIOMmap_map(f); /* Try and map it */ | |
3298 | if (!b->buf) | |
3299 | { | |
3300 | /* Map did not work - recover PerlIOBuf buffer if we have one */ | |
3301 | b->buf = m->bbuf; | |
3302 | } | |
3303 | } | |
3304 | b->ptr = b->end = b->buf; | |
3305 | if (b->buf) | |
3306 | return b->buf; | |
3307 | return PerlIOBuf_get_base(f); | |
3308 | } | |
3309 | ||
3310 | SSize_t | |
3311 | PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count) | |
3312 | { | |
3313 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3314 | PerlIOBuf *b = &m->base; | |
3315 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3316 | PerlIO_flush(f); | |
3317 | if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count)) | |
3318 | { | |
3319 | b->ptr -= count; | |
3320 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; | |
3321 | return count; | |
3322 | } | |
3323 | if (m->len) | |
3324 | { | |
4a4a6116 | 3325 | /* Loose the unwritable mapped buffer */ |
06da4f11 | 3326 | PerlIO_flush(f); |
c3d7c7c9 NIS |
3327 | /* If flush took the "buffer" see if we have one from before */ |
3328 | if (!b->buf && m->bbuf) | |
3329 | b->buf = m->bbuf; | |
3330 | if (!b->buf) | |
3331 | { | |
3332 | PerlIOBuf_get_base(f); | |
3333 | m->bbuf = b->buf; | |
3334 | } | |
06da4f11 | 3335 | } |
5e2ab84b | 3336 | return PerlIOBuf_unread(f,vbuf,count); |
06da4f11 NIS |
3337 | } |
3338 | ||
3339 | SSize_t | |
3340 | PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count) | |
3341 | { | |
3342 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3343 | PerlIOBuf *b = &m->base; | |
3344 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) | |
3345 | { | |
3346 | /* No, or wrong sort of, buffer */ | |
3347 | if (m->len) | |
3348 | { | |
3349 | if (PerlIOMmap_unmap(f) != 0) | |
3350 | return 0; | |
3351 | } | |
3352 | /* If unmap took the "buffer" see if we have one from before */ | |
3353 | if (!b->buf && m->bbuf) | |
3354 | b->buf = m->bbuf; | |
3355 | if (!b->buf) | |
3356 | { | |
3357 | PerlIOBuf_get_base(f); | |
3358 | m->bbuf = b->buf; | |
3359 | } | |
3360 | } | |
3361 | return PerlIOBuf_write(f,vbuf,count); | |
3362 | } | |
3363 | ||
3364 | IV | |
3365 | PerlIOMmap_flush(PerlIO *f) | |
3366 | { | |
3367 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3368 | PerlIOBuf *b = &m->base; | |
3369 | IV code = PerlIOBuf_flush(f); | |
3370 | /* Now we are "synced" at PerlIOBuf level */ | |
3371 | if (b->buf) | |
3372 | { | |
3373 | if (m->len) | |
3374 | { | |
3375 | /* Unmap the buffer */ | |
3376 | if (PerlIOMmap_unmap(f) != 0) | |
3377 | code = -1; | |
3378 | } | |
3379 | else | |
3380 | { | |
3381 | /* We seem to have a PerlIOBuf buffer which was not mapped | |
3382 | * remember it in case we need one later | |
3383 | */ | |
3384 | m->bbuf = b->buf; | |
3385 | } | |
3386 | } | |
06da4f11 NIS |
3387 | return code; |
3388 | } | |
3389 | ||
3390 | IV | |
3391 | PerlIOMmap_fill(PerlIO *f) | |
3392 | { | |
3393 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); | |
3394 | IV code = PerlIO_flush(f); | |
06da4f11 NIS |
3395 | if (code == 0 && !b->buf) |
3396 | { | |
3397 | code = PerlIOMmap_map(f); | |
06da4f11 NIS |
3398 | } |
3399 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) | |
3400 | { | |
3401 | code = PerlIOBuf_fill(f); | |
06da4f11 NIS |
3402 | } |
3403 | return code; | |
3404 | } | |
3405 | ||
3406 | IV | |
3407 | PerlIOMmap_close(PerlIO *f) | |
3408 | { | |
3409 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); | |
3410 | PerlIOBuf *b = &m->base; | |
3411 | IV code = PerlIO_flush(f); | |
3412 | if (m->bbuf) | |
3413 | { | |
3414 | b->buf = m->bbuf; | |
3415 | m->bbuf = NULL; | |
3416 | b->ptr = b->end = b->buf; | |
3417 | } | |
3418 | if (PerlIOBuf_close(f) != 0) | |
3419 | code = -1; | |
06da4f11 NIS |
3420 | return code; |
3421 | } | |
3422 | ||
3423 | ||
3424 | PerlIO_funcs PerlIO_mmap = { | |
3425 | "mmap", | |
3426 | sizeof(PerlIOMmap), | |
f5b9d040 | 3427 | PERLIO_K_BUFFERED, |
5e2ab84b | 3428 | PerlIOBuf_pushed, |
06da4f11 | 3429 | PerlIOBase_noop_ok, |
e3f3bf95 NIS |
3430 | PerlIOBuf_open, |
3431 | NULL, | |
3432 | PerlIOBase_fileno, | |
06da4f11 NIS |
3433 | PerlIOBuf_read, |
3434 | PerlIOMmap_unread, | |
3435 | PerlIOMmap_write, | |
3436 | PerlIOBuf_seek, | |
3437 | PerlIOBuf_tell, | |
3438 | PerlIOBuf_close, | |
3439 | PerlIOMmap_flush, | |
3440 | PerlIOMmap_fill, | |
3441 | PerlIOBase_eof, | |
3442 | PerlIOBase_error, | |
3443 | PerlIOBase_clearerr, | |
f6c77cf1 | 3444 | PerlIOBase_setlinebuf, |
06da4f11 NIS |
3445 | PerlIOMmap_get_base, |
3446 | PerlIOBuf_bufsiz, | |
3447 | PerlIOBuf_get_ptr, | |
3448 | PerlIOBuf_get_cnt, | |
3449 | PerlIOBuf_set_ptrcnt, | |
3450 | }; | |
3451 | ||
3452 | #endif /* HAS_MMAP */ | |
3453 | ||
9e353e3b NIS |
3454 | void |
3455 | PerlIO_init(void) | |
760ac839 | 3456 | { |
9e353e3b | 3457 | if (!_perlio) |
6f9d8c32 | 3458 | { |
be696b0a | 3459 | #ifndef WIN32 |
9e353e3b | 3460 | atexit(&PerlIO_cleanup); |
be696b0a | 3461 | #endif |
6f9d8c32 | 3462 | } |
760ac839 LW |
3463 | } |
3464 | ||
9e353e3b NIS |
3465 | #undef PerlIO_stdin |
3466 | PerlIO * | |
3467 | PerlIO_stdin(void) | |
3468 | { | |
3469 | if (!_perlio) | |
1141d9f8 NIS |
3470 | { |
3471 | dTHX; | |
3472 | PerlIO_stdstreams(aTHX); | |
3473 | } | |
05d1247b | 3474 | return &_perlio[1]; |
9e353e3b NIS |
3475 | } |
3476 | ||
3477 | #undef PerlIO_stdout | |
3478 | PerlIO * | |
3479 | PerlIO_stdout(void) | |
3480 | { | |
3481 | if (!_perlio) | |
1141d9f8 NIS |
3482 | { |
3483 | dTHX; | |
3484 | PerlIO_stdstreams(aTHX); | |
3485 | } | |
05d1247b | 3486 | return &_perlio[2]; |
9e353e3b NIS |
3487 | } |
3488 | ||
3489 | #undef PerlIO_stderr | |
3490 | PerlIO * | |
3491 | PerlIO_stderr(void) | |
3492 | { | |
3493 | if (!_perlio) | |
1141d9f8 NIS |
3494 | { |
3495 | dTHX; | |
3496 | PerlIO_stdstreams(aTHX); | |
3497 | } | |
05d1247b | 3498 | return &_perlio[3]; |
9e353e3b NIS |
3499 | } |
3500 | ||
3501 | /*--------------------------------------------------------------------------------------*/ | |
3502 | ||
3503 | #undef PerlIO_getname | |
3504 | char * | |
3505 | PerlIO_getname(PerlIO *f, char *buf) | |
3506 | { | |
3507 | dTHX; | |
3508 | Perl_croak(aTHX_ "Don't know how to get file name"); | |
3509 | return NULL; | |
3510 | } | |
3511 | ||
3512 | ||
3513 | /*--------------------------------------------------------------------------------------*/ | |
3514 | /* Functions which can be called on any kind of PerlIO implemented | |
3515 | in terms of above | |
3516 | */ | |
3517 | ||
3518 | #undef PerlIO_getc | |
6f9d8c32 | 3519 | int |
9e353e3b | 3520 | PerlIO_getc(PerlIO *f) |
760ac839 | 3521 | { |
313ca112 NIS |
3522 | STDCHAR buf[1]; |
3523 | SSize_t count = PerlIO_read(f,buf,1); | |
9e353e3b | 3524 | if (count == 1) |
313ca112 NIS |
3525 | { |
3526 | return (unsigned char) buf[0]; | |
3527 | } | |
3528 | return EOF; | |
3529 | } | |
3530 | ||
3531 | #undef PerlIO_ungetc | |
3532 | int | |
3533 | PerlIO_ungetc(PerlIO *f, int ch) | |
3534 | { | |
3535 | if (ch != EOF) | |
3536 | { | |
3537 | STDCHAR buf = ch; | |
3538 | if (PerlIO_unread(f,&buf,1) == 1) | |
3539 | return ch; | |
3540 | } | |
3541 | return EOF; | |
760ac839 LW |
3542 | } |
3543 | ||
9e353e3b NIS |
3544 | #undef PerlIO_putc |
3545 | int | |
3546 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 3547 | { |
9e353e3b NIS |
3548 | STDCHAR buf = ch; |
3549 | return PerlIO_write(f,&buf,1); | |
760ac839 LW |
3550 | } |
3551 | ||
9e353e3b | 3552 | #undef PerlIO_puts |
760ac839 | 3553 | int |
9e353e3b | 3554 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 3555 | { |
9e353e3b NIS |
3556 | STRLEN len = strlen(s); |
3557 | return PerlIO_write(f,s,len); | |
760ac839 LW |
3558 | } |
3559 | ||
3560 | #undef PerlIO_rewind | |
3561 | void | |
c78749f2 | 3562 | PerlIO_rewind(PerlIO *f) |
760ac839 | 3563 | { |
6f9d8c32 | 3564 | PerlIO_seek(f,(Off_t)0,SEEK_SET); |
9e353e3b | 3565 | PerlIO_clearerr(f); |
6f9d8c32 NIS |
3566 | } |
3567 | ||
3568 | #undef PerlIO_vprintf | |
3569 | int | |
3570 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
3571 | { | |
3572 | dTHX; | |
bb9950b7 | 3573 | SV *sv = newSVpvn("",0); |
6f9d8c32 NIS |
3574 | char *s; |
3575 | STRLEN len; | |
933fb4e4 | 3576 | SSize_t wrote; |
2cc61e15 DD |
3577 | #ifdef NEED_VA_COPY |
3578 | va_list apc; | |
3579 | Perl_va_copy(ap, apc); | |
3580 | sv_vcatpvf(sv, fmt, &apc); | |
3581 | #else | |
6f9d8c32 | 3582 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 | 3583 | #endif |
6f9d8c32 | 3584 | s = SvPV(sv,len); |
933fb4e4 BS |
3585 | wrote = PerlIO_write(f,s,len); |
3586 | SvREFCNT_dec(sv); | |
3587 | return wrote; | |
760ac839 LW |
3588 | } |
3589 | ||
3590 | #undef PerlIO_printf | |
6f9d8c32 | 3591 | int |
760ac839 | 3592 | PerlIO_printf(PerlIO *f,const char *fmt,...) |
760ac839 LW |
3593 | { |
3594 | va_list ap; | |
3595 | int result; | |
760ac839 | 3596 | va_start(ap,fmt); |
6f9d8c32 | 3597 | result = PerlIO_vprintf(f,fmt,ap); |
760ac839 LW |
3598 | va_end(ap); |
3599 | return result; | |
3600 | } | |
3601 | ||
3602 | #undef PerlIO_stdoutf | |
6f9d8c32 | 3603 | int |
760ac839 | 3604 | PerlIO_stdoutf(const char *fmt,...) |
760ac839 LW |
3605 | { |
3606 | va_list ap; | |
3607 | int result; | |
760ac839 | 3608 | va_start(ap,fmt); |
760ac839 LW |
3609 | result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); |
3610 | va_end(ap); | |
3611 | return result; | |
3612 | } | |
3613 | ||
3614 | #undef PerlIO_tmpfile | |
3615 | PerlIO * | |
c78749f2 | 3616 | PerlIO_tmpfile(void) |
760ac839 | 3617 | { |
b1ef6e3b | 3618 | /* I have no idea how portable mkstemp() is ... */ |
83b075c3 | 3619 | #if defined(WIN32) || !defined(HAVE_MKSTEMP) |
adb71456 | 3620 | dTHX; |
83b075c3 | 3621 | PerlIO *f = NULL; |
eaf8b698 | 3622 | FILE *stdio = PerlSIO_tmpfile(); |
83b075c3 NIS |
3623 | if (stdio) |
3624 | { | |
e3f3bf95 | 3625 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(aTHX_ (f = PerlIO_allocate(aTHX)),&PerlIO_stdio,"w+",Nullsv),PerlIOStdio); |
83b075c3 NIS |
3626 | s->stdio = stdio; |
3627 | } | |
3628 | return f; | |
3629 | #else | |
3630 | dTHX; | |
6f9d8c32 NIS |
3631 | SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0); |
3632 | int fd = mkstemp(SvPVX(sv)); | |
3633 | PerlIO *f = NULL; | |
3634 | if (fd >= 0) | |
3635 | { | |
b1ef6e3b | 3636 | f = PerlIO_fdopen(fd,"w+"); |
6f9d8c32 NIS |
3637 | if (f) |
3638 | { | |
9e353e3b | 3639 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; |
6f9d8c32 | 3640 | } |
00b02797 | 3641 | PerlLIO_unlink(SvPVX(sv)); |
6f9d8c32 NIS |
3642 | SvREFCNT_dec(sv); |
3643 | } | |
3644 | return f; | |
83b075c3 | 3645 | #endif |
760ac839 LW |
3646 | } |
3647 | ||
6f9d8c32 NIS |
3648 | #undef HAS_FSETPOS |
3649 | #undef HAS_FGETPOS | |
3650 | ||
760ac839 LW |
3651 | #endif /* USE_SFIO */ |
3652 | #endif /* PERLIO_IS_STDIO */ | |
3653 | ||
9e353e3b NIS |
3654 | /*======================================================================================*/ |
3655 | /* Now some functions in terms of above which may be needed even if | |
3656 | we are not in true PerlIO mode | |
3657 | */ | |
3658 | ||
760ac839 LW |
3659 | #ifndef HAS_FSETPOS |
3660 | #undef PerlIO_setpos | |
3661 | int | |
766a733e | 3662 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 3663 | { |
766a733e NIS |
3664 | dTHX; |
3665 | if (SvOK(pos)) | |
3666 | { | |
3667 | STRLEN len; | |
3668 | Off_t *posn = (Off_t *) SvPV(pos,len); | |
3669 | if (f && len == sizeof(Off_t)) | |
3670 | return PerlIO_seek(f,*posn,SEEK_SET); | |
3671 | } | |
3672 | errno = EINVAL; | |
3673 | return -1; | |
760ac839 | 3674 | } |
c411622e | 3675 | #else |
c411622e | 3676 | #undef PerlIO_setpos |
3677 | int | |
766a733e | 3678 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 3679 | { |
766a733e NIS |
3680 | dTHX; |
3681 | if (SvOK(pos)) | |
3682 | { | |
3683 | STRLEN len; | |
3684 | Fpos_t *fpos = (Fpos_t *) SvPV(pos,len); | |
3685 | if (f && len == sizeof(Fpos_t)) | |
3686 | { | |
2d4389e4 | 3687 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
766a733e | 3688 | return fsetpos64(f, fpos); |
d9b3e12d | 3689 | #else |
766a733e | 3690 | return fsetpos(f, fpos); |
d9b3e12d | 3691 | #endif |
766a733e NIS |
3692 | } |
3693 | } | |
3694 | errno = EINVAL; | |
3695 | return -1; | |
c411622e | 3696 | } |
3697 | #endif | |
760ac839 LW |
3698 | |
3699 | #ifndef HAS_FGETPOS | |
3700 | #undef PerlIO_getpos | |
3701 | int | |
766a733e | 3702 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 3703 | { |
766a733e NIS |
3704 | dTHX; |
3705 | Off_t posn = PerlIO_tell(f); | |
3706 | sv_setpvn(pos,(char *)&posn,sizeof(posn)); | |
3707 | return (posn == (Off_t)-1) ? -1 : 0; | |
760ac839 | 3708 | } |
c411622e | 3709 | #else |
c411622e | 3710 | #undef PerlIO_getpos |
3711 | int | |
766a733e | 3712 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 3713 | { |
766a733e NIS |
3714 | dTHX; |
3715 | Fpos_t fpos; | |
3716 | int code; | |
2d4389e4 | 3717 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
766a733e | 3718 | code = fgetpos64(f, &fpos); |
d9b3e12d | 3719 | #else |
766a733e | 3720 | code = fgetpos(f, &fpos); |
d9b3e12d | 3721 | #endif |
766a733e NIS |
3722 | sv_setpvn(pos,(char *)&fpos,sizeof(fpos)); |
3723 | return code; | |
c411622e | 3724 | } |
3725 | #endif | |
760ac839 LW |
3726 | |
3727 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
3728 | ||
3729 | int | |
c78749f2 | 3730 | vprintf(char *pat, char *args) |
662a7e3f CS |
3731 | { |
3732 | _doprnt(pat, args, stdout); | |
3733 | return 0; /* wrong, but perl doesn't use the return value */ | |
3734 | } | |
3735 | ||
3736 | int | |
c78749f2 | 3737 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
3738 | { |
3739 | _doprnt(pat, args, fd); | |
3740 | return 0; /* wrong, but perl doesn't use the return value */ | |
3741 | } | |
3742 | ||
3743 | #endif | |
3744 | ||
3745 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 3746 | int |
8ac85365 | 3747 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 LW |
3748 | { |
3749 | int val = vsprintf(s, fmt, ap); | |
3750 | if (n >= 0) | |
3751 | { | |
8c86a920 | 3752 | if (strlen(s) >= (STRLEN)n) |
760ac839 | 3753 | { |
bf49b057 | 3754 | dTHX; |
fb4a9925 JH |
3755 | (void)PerlIO_puts(Perl_error_log, |
3756 | "panic: sprintf overflow - memory corrupted!\n"); | |
bf49b057 | 3757 | my_exit(1); |
760ac839 LW |
3758 | } |
3759 | } | |
3760 | return val; | |
3761 | } | |
3762 | #endif | |
3763 | ||
3764 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 3765 | int |
760ac839 | 3766 | PerlIO_sprintf(char *s, int n, const char *fmt,...) |
760ac839 LW |
3767 | { |
3768 | va_list ap; | |
3769 | int result; | |
760ac839 | 3770 | va_start(ap,fmt); |
760ac839 LW |
3771 | result = PerlIO_vsprintf(s, n, fmt, ap); |
3772 | va_end(ap); | |
3773 | return result; | |
3774 | } | |
3775 | #endif | |
3776 | ||
c5be433b | 3777 |