Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
5cb43542 RGS |
2 | * perlio.c |
3 | * Copyright (c) 1996-2006, Nick Ing-Simmons | |
1129b882 | 4 | * Copyright (c) 2006, 2007, 2008 Larry Wall and others |
5cb43542 RGS |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public License | |
7 | * or the Artistic License, as specified in the README file. | |
760ac839 LW |
8 | */ |
9 | ||
14a5cf38 | 10 | /* |
d31a8517 AT |
11 | * Hour after hour for nearly three weary days he had jogged up and down, |
12 | * over passes, and through long dales, and across many streams. | |
4ac71550 TC |
13 | * |
14 | * [pp.791-792 of _The Lord of the Rings_, V/iii: "The Muster of Rohan"] | |
d31a8517 AT |
15 | */ |
16 | ||
166f8a29 DM |
17 | /* This file contains the functions needed to implement PerlIO, which |
18 | * is Perl's private replacement for the C stdio library. This is used | |
19 | * by default unless you compile with -Uuseperlio or run with | |
20 | * PERLIO=:stdio (but don't do this unless you know what you're doing) | |
21 | */ | |
22 | ||
d31a8517 | 23 | /* |
71200d45 | 24 | * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get |
14a5cf38 | 25 | * at the dispatch tables, even when we do not need it for other reasons. |
71200d45 | 26 | * Invent a dSYS macro to abstract this out |
14a5cf38 | 27 | */ |
7bcba3d4 NIS |
28 | #ifdef PERL_IMPLICIT_SYS |
29 | #define dSYS dTHX | |
30 | #else | |
31 | #define dSYS dNOOP | |
32 | #endif | |
33 | ||
760ac839 | 34 | #define VOIDUSED 1 |
12ae5dfc JH |
35 | #ifdef PERL_MICRO |
36 | # include "uconfig.h" | |
37 | #else | |
b0f06652 VK |
38 | # ifndef USE_CROSS_COMPILE |
39 | # include "config.h" | |
40 | # else | |
41 | # include "xconfig.h" | |
42 | # endif | |
12ae5dfc | 43 | #endif |
760ac839 | 44 | |
6f9d8c32 | 45 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 46 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
14a5cf38 | 47 | /* |
71200d45 | 48 | * #define PerlIO FILE |
14a5cf38 | 49 | */ |
760ac839 LW |
50 | #endif |
51 | /* | |
6f9d8c32 | 52 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 53 | * which are not #defined in perlio.h. |
6f9d8c32 | 54 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
55 | */ |
56 | ||
57 | #include "EXTERN.h" | |
864dbfa3 | 58 | #define PERL_IN_PERLIO_C |
760ac839 LW |
59 | #include "perl.h" |
60 | ||
32af7c23 CL |
61 | #ifdef PERL_IMPLICIT_CONTEXT |
62 | #undef dSYS | |
63 | #define dSYS dTHX | |
64 | #endif | |
65 | ||
0c4f7ff0 NIS |
66 | #include "XSUB.h" |
67 | ||
9cffb111 OS |
68 | #ifdef __Lynx__ |
69 | /* Missing proto on LynxOS */ | |
70 | int mkstemp(char*); | |
71 | #endif | |
72 | ||
1b7a0411 | 73 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 74 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 75 | if (PerlIOValid(f)) { \ |
46c461b5 | 76 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
77 | if (tab && tab->callback) \ |
78 | return (*tab->callback) args; \ | |
79 | else \ | |
80 | return PerlIOBase_ ## base args; \ | |
81 | } \ | |
82 | else \ | |
83 | SETERRNO(EBADF, SS_IVCHAN); \ | |
84 | return failure | |
85 | ||
86 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 87 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 88 | if (PerlIOValid(f)) { \ |
46c461b5 | 89 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
90 | if (tab && tab->callback) \ |
91 | return (*tab->callback) args; \ | |
92 | SETERRNO(EINVAL, LIB_INVARG); \ | |
93 | } \ | |
94 | else \ | |
95 | SETERRNO(EBADF, SS_IVCHAN); \ | |
96 | return failure | |
97 | ||
98 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 99 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 100 | if (PerlIOValid(f)) { \ |
46c461b5 | 101 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
102 | if (tab && tab->callback) \ |
103 | (*tab->callback) args; \ | |
104 | else \ | |
105 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
106 | } \ |
107 | else \ | |
108 | SETERRNO(EBADF, SS_IVCHAN) | |
109 | ||
110 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 111 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 112 | if (PerlIOValid(f)) { \ |
46c461b5 | 113 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
114 | if (tab && tab->callback) \ |
115 | (*tab->callback) args; \ | |
37725cdc NIS |
116 | else \ |
117 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
118 | } \ |
119 | else \ | |
120 | SETERRNO(EBADF, SS_IVCHAN) | |
121 | ||
89a3a251 JH |
122 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
123 | extern int fseeko(FILE *, off_t, int); | |
124 | extern off_t ftello(FILE *); | |
125 | #endif | |
126 | ||
71ab4674 | 127 | #ifndef USE_SFIO |
a0c21aa1 JH |
128 | |
129 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); | |
130 | ||
71ab4674 SP |
131 | int |
132 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
133 | { | |
134 | /* | |
135 | * This used to be contents of do_binmode in doio.c | |
136 | */ | |
137 | #ifdef DOSISH | |
cd86ed9d | 138 | # if defined(atarist) |
58c0efa5 | 139 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
140 | if (!fflush(fp)) { |
141 | if (mode & O_BINARY) | |
142 | ((FILE *) fp)->_flag |= _IOBIN; | |
143 | else | |
144 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
145 | return 1; | |
146 | } | |
147 | return 0; | |
148 | # else | |
149 | dTHX; | |
58c0efa5 | 150 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
151 | #ifdef NETWARE |
152 | if (PerlLIO_setmode(fp, mode) != -1) { | |
153 | #else | |
154 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
155 | #endif | |
156 | # if defined(WIN32) && defined(__BORLANDC__) | |
157 | /* | |
158 | * The translation mode of the stream is maintained independent | |
159 | of | |
160 | * the translation mode of the fd in the Borland RTL (heavy | |
161 | * digging through their runtime sources reveal). User has to | |
162 | set | |
163 | * the mode explicitly for the stream (though they don't | |
164 | document | |
165 | * this anywhere). GSAR 97-5-24 | |
166 | */ | |
167 | fseek(fp, 0L, 0); | |
168 | if (mode & O_BINARY) | |
169 | fp->flags |= _F_BIN; | |
170 | else | |
171 | fp->flags &= ~_F_BIN; | |
172 | # endif | |
173 | return 1; | |
174 | } | |
175 | else | |
176 | return 0; | |
177 | # endif | |
178 | #else | |
179 | # if defined(USEMYBINMODE) | |
180 | dTHX; | |
58c0efa5 RGS |
181 | # if defined(__CYGWIN__) |
182 | PERL_UNUSED_ARG(iotype); | |
183 | # endif | |
71ab4674 SP |
184 | if (my_binmode(fp, iotype, mode) != FALSE) |
185 | return 1; | |
186 | else | |
187 | return 0; | |
188 | # else | |
189 | PERL_UNUSED_ARG(fp); | |
190 | PERL_UNUSED_ARG(iotype); | |
191 | PERL_UNUSED_ARG(mode); | |
192 | return 1; | |
193 | # endif | |
194 | #endif | |
195 | } | |
196 | #endif /* sfio */ | |
197 | ||
06c7082d | 198 | #ifndef O_ACCMODE |
22569500 | 199 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
200 | #endif |
201 | ||
202 | int | |
203 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
204 | { | |
de009b76 | 205 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
206 | int ix = 0; |
207 | int ptype; | |
208 | switch (result) { | |
209 | case O_RDONLY: | |
210 | ptype = IoTYPE_RDONLY; | |
211 | break; | |
212 | case O_WRONLY: | |
213 | ptype = IoTYPE_WRONLY; | |
214 | break; | |
215 | case O_RDWR: | |
216 | default: | |
217 | ptype = IoTYPE_RDWR; | |
218 | break; | |
219 | } | |
220 | if (writing) | |
221 | *writing = (result != O_RDONLY); | |
222 | ||
223 | if (result == O_RDONLY) { | |
224 | mode[ix++] = 'r'; | |
225 | } | |
226 | #ifdef O_APPEND | |
227 | else if (rawmode & O_APPEND) { | |
228 | mode[ix++] = 'a'; | |
229 | if (result != O_WRONLY) | |
230 | mode[ix++] = '+'; | |
231 | } | |
232 | #endif | |
233 | else { | |
234 | if (result == O_WRONLY) | |
235 | mode[ix++] = 'w'; | |
236 | else { | |
237 | mode[ix++] = 'r'; | |
238 | mode[ix++] = '+'; | |
239 | } | |
240 | } | |
241 | if (rawmode & O_BINARY) | |
242 | mode[ix++] = 'b'; | |
243 | mode[ix] = '\0'; | |
244 | return ptype; | |
245 | } | |
246 | ||
eb73beca NIS |
247 | #ifndef PERLIO_LAYERS |
248 | int | |
249 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
250 | { | |
6874a2de NIS |
251 | if (!names || !*names |
252 | || strEQ(names, ":crlf") | |
253 | || strEQ(names, ":raw") | |
254 | || strEQ(names, ":bytes") | |
255 | ) { | |
14a5cf38 JH |
256 | return 0; |
257 | } | |
258 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
259 | /* | |
71200d45 | 260 | * NOTREACHED |
14a5cf38 JH |
261 | */ |
262 | return -1; | |
eb73beca NIS |
263 | } |
264 | ||
13621cfb NIS |
265 | void |
266 | PerlIO_destruct(pTHX) | |
267 | { | |
268 | } | |
269 | ||
f5b9d040 NIS |
270 | int |
271 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
272 | { | |
92bff44d | 273 | #ifdef USE_SFIO |
8772537c AL |
274 | PERL_UNUSED_ARG(iotype); |
275 | PERL_UNUSED_ARG(mode); | |
276 | PERL_UNUSED_ARG(names); | |
14a5cf38 | 277 | return 1; |
92bff44d | 278 | #else |
14a5cf38 | 279 | return perlsio_binmode(fp, iotype, mode); |
92bff44d | 280 | #endif |
f5b9d040 | 281 | } |
60382766 | 282 | |
e0fa5af2 | 283 | PerlIO * |
ecdeb87c | 284 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 285 | { |
a0fd4948 | 286 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
287 | return NULL; |
288 | #else | |
289 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 290 | return PerlSIO_fdupopen(f); |
0553478e | 291 | #else |
30753f56 NIS |
292 | #ifdef WIN32 |
293 | return win32_fdupopen(f); | |
294 | #else | |
e0fa5af2 | 295 | if (f) { |
504618e9 | 296 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 297 | if (fd >= 0) { |
06c7082d | 298 | char mode[8]; |
a5936e02 | 299 | #ifdef DJGPP |
dcda55fc AL |
300 | const int omode = djgpp_get_stream_mode(f); |
301 | #else | |
302 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 303 | #endif |
06c7082d | 304 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 305 | /* the r+ is a hack */ |
06c7082d | 306 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
307 | } |
308 | return NULL; | |
309 | } | |
310 | else { | |
93189314 | 311 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 312 | } |
7114a2d2 | 313 | #endif |
e0fa5af2 | 314 | return NULL; |
0553478e | 315 | #endif |
30753f56 | 316 | #endif |
e0fa5af2 NIS |
317 | } |
318 | ||
319 | ||
14a5cf38 | 320 | /* |
71200d45 | 321 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 322 | */ |
ee518936 NIS |
323 | |
324 | PerlIO * | |
14a5cf38 JH |
325 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
326 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
327 | { | |
7cf31beb NIS |
328 | if (narg) { |
329 | if (narg > 1) { | |
3b8752bb | 330 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 331 | } |
14a5cf38 JH |
332 | if (*args == &PL_sv_undef) |
333 | return PerlIO_tmpfile(); | |
334 | else { | |
e62f0680 | 335 | const char *name = SvPV_nolen_const(*args); |
3b6c1aba | 336 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
337 | fd = PerlLIO_open3(name, imode, perm); |
338 | if (fd >= 0) | |
de009b76 | 339 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
340 | } |
341 | else if (old) { | |
342 | return PerlIO_reopen(name, mode, old); | |
343 | } | |
344 | else { | |
345 | return PerlIO_open(name, mode); | |
346 | } | |
347 | } | |
348 | } | |
349 | else { | |
350 | return PerlIO_fdopen(fd, (char *) mode); | |
351 | } | |
352 | return NULL; | |
ee518936 NIS |
353 | } |
354 | ||
0c4f7ff0 NIS |
355 | XS(XS_PerlIO__Layer__find) |
356 | { | |
14a5cf38 JH |
357 | dXSARGS; |
358 | if (items < 2) | |
359 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
360 | else { | |
dcda55fc | 361 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
362 | ST(0) = (strEQ(name, "crlf") |
363 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
364 | XSRETURN(1); | |
365 | } | |
0c4f7ff0 NIS |
366 | } |
367 | ||
368 | ||
369 | void | |
370 | Perl_boot_core_PerlIO(pTHX) | |
371 | { | |
14a5cf38 | 372 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
373 | } |
374 | ||
ac27b0f5 NIS |
375 | #endif |
376 | ||
32e30700 | 377 | |
6f9d8c32 | 378 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
379 | |
380 | void | |
e8632036 | 381 | PerlIO_init(pTHX) |
760ac839 | 382 | { |
96a5add6 | 383 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
384 | /* |
385 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 386 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 387 | * that may be required by loadable extensions e.g. for |
71200d45 | 388 | * FileHandle::tmpfile |
14a5cf38 | 389 | */ |
760ac839 LW |
390 | } |
391 | ||
33dcbb9a | 392 | #undef PerlIO_tmpfile |
393 | PerlIO * | |
8ac85365 | 394 | PerlIO_tmpfile(void) |
33dcbb9a | 395 | { |
14a5cf38 | 396 | return tmpfile(); |
33dcbb9a | 397 | } |
398 | ||
22569500 | 399 | #else /* PERLIO_IS_STDIO */ |
760ac839 LW |
400 | |
401 | #ifdef USE_SFIO | |
402 | ||
403 | #undef HAS_FSETPOS | |
404 | #undef HAS_FGETPOS | |
405 | ||
14a5cf38 JH |
406 | /* |
407 | * This section is just to make sure these functions get pulled in from | |
71200d45 | 408 | * libsfio.a |
14a5cf38 | 409 | */ |
760ac839 LW |
410 | |
411 | #undef PerlIO_tmpfile | |
412 | PerlIO * | |
c78749f2 | 413 | PerlIO_tmpfile(void) |
760ac839 | 414 | { |
14a5cf38 | 415 | return sftmp(0); |
760ac839 LW |
416 | } |
417 | ||
418 | void | |
e8632036 | 419 | PerlIO_init(pTHX) |
760ac839 | 420 | { |
96a5add6 | 421 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
422 | /* |
423 | * Force this file to be included in perl binary. Which allows this | |
424 | * file to force inclusion of other functions that may be required by | |
71200d45 | 425 | * loadable extensions e.g. for FileHandle::tmpfile |
14a5cf38 | 426 | */ |
760ac839 | 427 | |
14a5cf38 | 428 | /* |
71200d45 | 429 | * Hack sfio does its own 'autoflush' on stdout in common cases. Flush |
14a5cf38 | 430 | * results in a lot of lseek()s to regular files and lot of small |
71200d45 | 431 | * writes to pipes. |
14a5cf38 JH |
432 | */ |
433 | sfset(sfstdout, SF_SHARE, 0); | |
760ac839 LW |
434 | } |
435 | ||
b9d6bf13 | 436 | /* This is not the reverse of PerlIO_exportFILE(), PerlIO_releaseFILE() is. */ |
92bff44d | 437 | PerlIO * |
4b069b44 | 438 | PerlIO_importFILE(FILE *stdio, const char *mode) |
92bff44d | 439 | { |
de009b76 | 440 | const int fd = fileno(stdio); |
4b069b44 | 441 | if (!mode || !*mode) { |
81428673 | 442 | mode = "r+"; |
4b069b44 NIS |
443 | } |
444 | return PerlIO_fdopen(fd, mode); | |
92bff44d NIS |
445 | } |
446 | ||
447 | FILE * | |
448 | PerlIO_findFILE(PerlIO *pio) | |
449 | { | |
de009b76 AL |
450 | const int fd = PerlIO_fileno(pio); |
451 | FILE * const f = fdopen(fd, "r+"); | |
14a5cf38 JH |
452 | PerlIO_flush(pio); |
453 | if (!f && errno == EINVAL) | |
454 | f = fdopen(fd, "w"); | |
455 | if (!f && errno == EINVAL) | |
456 | f = fdopen(fd, "r"); | |
457 | return f; | |
92bff44d NIS |
458 | } |
459 | ||
460 | ||
22569500 | 461 | #else /* USE_SFIO */ |
6f9d8c32 | 462 | /*======================================================================================*/ |
14a5cf38 | 463 | /* |
71200d45 | 464 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 465 | */ |
760ac839 | 466 | |
76ced9ad NIS |
467 | #include "perliol.h" |
468 | ||
14a5cf38 JH |
469 | /* |
470 | * We _MUST_ have <unistd.h> if we are using lseek() and may have large | |
71200d45 | 471 | * files |
14a5cf38 | 472 | */ |
02f66e2f NIS |
473 | #ifdef I_UNISTD |
474 | #include <unistd.h> | |
475 | #endif | |
06da4f11 NIS |
476 | #ifdef HAS_MMAP |
477 | #include <sys/mman.h> | |
478 | #endif | |
479 | ||
6f9d8c32 | 480 | void |
14a5cf38 JH |
481 | PerlIO_debug(const char *fmt, ...) |
482 | { | |
14a5cf38 JH |
483 | va_list ap; |
484 | dSYS; | |
485 | va_start(ap, fmt); | |
582588d2 NC |
486 | if (!PL_perlio_debug_fd) { |
487 | if (!PL_tainting && PL_uid == PL_euid && PL_gid == PL_egid) { | |
488 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); | |
489 | if (s && *s) | |
490 | PL_perlio_debug_fd | |
491 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
492 | else | |
493 | PL_perlio_debug_fd = -1; | |
494 | } else { | |
495 | /* tainting or set*id, so ignore the environment, and ensure we | |
496 | skip these tests next time through. */ | |
27da23d5 | 497 | PL_perlio_debug_fd = -1; |
582588d2 | 498 | } |
14a5cf38 | 499 | } |
27da23d5 | 500 | if (PL_perlio_debug_fd > 0) { |
14a5cf38 | 501 | dTHX; |
70ace5da | 502 | #ifdef USE_ITHREADS |
dcda55fc | 503 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
504 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
505 | char buffer[1024]; | |
1208b3dd JH |
506 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
507 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
508 | PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); | |
70ace5da | 509 | #else |
dcda55fc AL |
510 | const char *s = CopFILE(PL_curcop); |
511 | STRLEN len; | |
550e2ce0 NC |
512 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
513 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
514 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
515 | ||
b83604b4 | 516 | s = SvPV_const(sv, len); |
27da23d5 | 517 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 518 | SvREFCNT_dec(sv); |
70ace5da | 519 | #endif |
14a5cf38 JH |
520 | } |
521 | va_end(ap); | |
6f9d8c32 NIS |
522 | } |
523 | ||
9e353e3b NIS |
524 | /*--------------------------------------------------------------------------------------*/ |
525 | ||
14a5cf38 | 526 | /* |
71200d45 | 527 | * Inner level routines |
14a5cf38 | 528 | */ |
9e353e3b | 529 | |
14a5cf38 | 530 | /* |
71200d45 | 531 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 532 | */ |
05d1247b | 533 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 534 | |
760ac839 | 535 | PerlIO * |
5f1a76d0 | 536 | PerlIO_allocate(pTHX) |
6f9d8c32 | 537 | { |
97aff369 | 538 | dVAR; |
14a5cf38 | 539 | /* |
71200d45 | 540 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 JH |
541 | */ |
542 | PerlIO **last; | |
543 | PerlIO *f; | |
a1ea730d | 544 | last = &PL_perlio; |
14a5cf38 JH |
545 | while ((f = *last)) { |
546 | int i; | |
547 | last = (PerlIO **) (f); | |
548 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
549 | if (!*++f) { | |
550 | return f; | |
551 | } | |
552 | } | |
553 | } | |
a02a5408 | 554 | Newxz(f,PERLIO_TABLE_SIZE,PerlIO); |
14a5cf38 JH |
555 | if (!f) { |
556 | return NULL; | |
557 | } | |
558 | *last = f; | |
559 | return f + 1; | |
05d1247b NIS |
560 | } |
561 | ||
a1ea730d NIS |
562 | #undef PerlIO_fdupopen |
563 | PerlIO * | |
ecdeb87c | 564 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 565 | { |
04892f78 | 566 | if (PerlIOValid(f)) { |
de009b76 | 567 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 568 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
569 | if (tab && tab->Dup) |
570 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
571 | else { |
572 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
573 | } | |
a1ea730d | 574 | } |
210e727c JH |
575 | else |
576 | SETERRNO(EBADF, SS_IVCHAN); | |
577 | ||
578 | return NULL; | |
a1ea730d NIS |
579 | } |
580 | ||
581 | void | |
5f1a76d0 | 582 | PerlIO_cleantable(pTHX_ PerlIO **tablep) |
05d1247b | 583 | { |
dcda55fc | 584 | PerlIO * const table = *tablep; |
14a5cf38 JH |
585 | if (table) { |
586 | int i; | |
587 | PerlIO_cleantable(aTHX_(PerlIO **) & (table[0])); | |
588 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { | |
dcda55fc | 589 | PerlIO * const f = table + i; |
14a5cf38 JH |
590 | if (*f) { |
591 | PerlIO_close(f); | |
592 | } | |
593 | } | |
3a1ee7e8 | 594 | Safefree(table); |
14a5cf38 | 595 | *tablep = NULL; |
05d1247b | 596 | } |
05d1247b NIS |
597 | } |
598 | ||
fcf2db38 NIS |
599 | |
600 | PerlIO_list_t * | |
3a1ee7e8 | 601 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 602 | { |
14a5cf38 | 603 | PerlIO_list_t *list; |
96a5add6 | 604 | PERL_UNUSED_CONTEXT; |
a02a5408 | 605 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
606 | list->refcnt = 1; |
607 | return list; | |
fcf2db38 NIS |
608 | } |
609 | ||
610 | void | |
3a1ee7e8 | 611 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 612 | { |
14a5cf38 JH |
613 | if (list) { |
614 | if (--list->refcnt == 0) { | |
615 | if (list->array) { | |
14a5cf38 | 616 | IV i; |
ef8d46e8 VP |
617 | for (i = 0; i < list->cur; i++) |
618 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
619 | Safefree(list->array); |
620 | } | |
621 | Safefree(list); | |
622 | } | |
623 | } | |
fcf2db38 NIS |
624 | } |
625 | ||
626 | void | |
3a1ee7e8 | 627 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 628 | { |
97aff369 | 629 | dVAR; |
334e202e | 630 | PerlIO_pair_t *p; |
b37c2d43 AL |
631 | PERL_UNUSED_CONTEXT; |
632 | ||
14a5cf38 JH |
633 | if (list->cur >= list->len) { |
634 | list->len += 8; | |
635 | if (list->array) | |
636 | Renew(list->array, list->len, PerlIO_pair_t); | |
637 | else | |
a02a5408 | 638 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
639 | } |
640 | p = &(list->array[list->cur++]); | |
641 | p->funcs = funcs; | |
642 | if ((p->arg = arg)) { | |
f84c484e | 643 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 644 | } |
fcf2db38 NIS |
645 | } |
646 | ||
3a1ee7e8 NIS |
647 | PerlIO_list_t * |
648 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
649 | { | |
b37c2d43 | 650 | PerlIO_list_t *list = NULL; |
694c95cf JH |
651 | if (proto) { |
652 | int i; | |
653 | list = PerlIO_list_alloc(aTHX); | |
654 | for (i=0; i < proto->cur; i++) { | |
a951d81d BL |
655 | SV *arg = proto->array[i].arg; |
656 | #ifdef sv_dup | |
657 | if (arg && param) | |
658 | arg = sv_dup(arg, param); | |
659 | #else | |
660 | PERL_UNUSED_ARG(param); | |
661 | #endif | |
694c95cf JH |
662 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
663 | } | |
3a1ee7e8 NIS |
664 | } |
665 | return list; | |
666 | } | |
4a4a6116 | 667 | |
05d1247b | 668 | void |
3a1ee7e8 | 669 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 670 | { |
3aaf42a7 | 671 | #ifdef USE_ITHREADS |
3a1ee7e8 NIS |
672 | PerlIO **table = &proto->Iperlio; |
673 | PerlIO *f; | |
674 | PL_perlio = NULL; | |
675 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
676 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
677 | PerlIO_allocate(aTHX); /* root slot is never used */ | |
a25429c6 | 678 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
679 | while ((f = *table)) { |
680 | int i; | |
681 | table = (PerlIO **) (f++); | |
682 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
683 | if (*f) { | |
93a8090d | 684 | (void) fp_dup(f, 0, param); |
3a1ee7e8 NIS |
685 | } |
686 | f++; | |
687 | } | |
688 | } | |
1b6737cc | 689 | #else |
a25429c6 | 690 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
691 | PERL_UNUSED_ARG(proto); |
692 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 693 | #endif |
9a6404c5 DM |
694 | } |
695 | ||
696 | void | |
13621cfb NIS |
697 | PerlIO_destruct(pTHX) |
698 | { | |
97aff369 | 699 | dVAR; |
a1ea730d | 700 | PerlIO **table = &PL_perlio; |
14a5cf38 | 701 | PerlIO *f; |
694c95cf | 702 | #ifdef USE_ITHREADS |
a25429c6 | 703 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 704 | #endif |
14a5cf38 JH |
705 | while ((f = *table)) { |
706 | int i; | |
707 | table = (PerlIO **) (f++); | |
708 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
709 | PerlIO *x = f; | |
dcda55fc | 710 | const PerlIOl *l; |
14a5cf38 JH |
711 | while ((l = *x)) { |
712 | if (l->tab->kind & PERLIO_K_DESTRUCT) { | |
713 | PerlIO_debug("Destruct popping %s\n", l->tab->name); | |
714 | PerlIO_flush(x); | |
715 | PerlIO_pop(aTHX_ x); | |
716 | } | |
717 | else { | |
718 | x = PerlIONext(x); | |
719 | } | |
720 | } | |
721 | f++; | |
722 | } | |
723 | } | |
13621cfb NIS |
724 | } |
725 | ||
726 | void | |
a999f61b | 727 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 728 | { |
dcda55fc | 729 | const PerlIOl *l = *f; |
14a5cf38 | 730 | if (l) { |
fe5a182c | 731 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, l->tab->name); |
14a5cf38 JH |
732 | if (l->tab->Popped) { |
733 | /* | |
734 | * If popped returns non-zero do not free its layer structure | |
735 | * it has either done so itself, or it is shared and still in | |
71200d45 | 736 | * use |
14a5cf38 | 737 | */ |
f62ce20a | 738 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
739 | return; |
740 | } | |
b47cad08 | 741 | *f = l->next; |
3a1ee7e8 | 742 | Safefree(l); |
a8c08ecd | 743 | } |
6f9d8c32 NIS |
744 | } |
745 | ||
39f7a870 JH |
746 | /* Return as an array the stack of layers on a filehandle. Note that |
747 | * the stack is returned top-first in the array, and there are three | |
748 | * times as many array elements as there are layers in the stack: the | |
749 | * first element of a layer triplet is the name, the second one is the | |
750 | * arguments, and the third one is the flags. */ | |
751 | ||
752 | AV * | |
753 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
754 | { | |
97aff369 | 755 | dVAR; |
dcda55fc | 756 | AV * const av = newAV(); |
39f7a870 | 757 | |
dcda55fc AL |
758 | if (PerlIOValid(f)) { |
759 | PerlIOl *l = PerlIOBase(f); | |
760 | ||
761 | while (l) { | |
92e45a3e NC |
762 | /* There is some collusion in the implementation of |
763 | XS_PerlIO_get_layers - it knows that name and flags are | |
764 | generated as fresh SVs here, and takes advantage of that to | |
765 | "copy" them by taking a reference. If it changes here, it needs | |
766 | to change there too. */ | |
dcda55fc AL |
767 | SV * const name = l->tab && l->tab->name ? |
768 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
769 | SV * const arg = l->tab && l->tab->Getarg ? | |
770 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
771 | av_push(av, name); | |
772 | av_push(av, arg); | |
773 | av_push(av, newSViv((IV)l->flags)); | |
774 | l = l->next; | |
775 | } | |
776 | } | |
39f7a870 | 777 | |
dcda55fc | 778 | return av; |
39f7a870 JH |
779 | } |
780 | ||
9e353e3b | 781 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 782 | /* |
71200d45 | 783 | * XS Interface for perl code |
14a5cf38 | 784 | */ |
9e353e3b | 785 | |
fcf2db38 | 786 | PerlIO_funcs * |
2edd7e44 | 787 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 788 | { |
27da23d5 | 789 | dVAR; |
14a5cf38 JH |
790 | IV i; |
791 | if ((SSize_t) len <= 0) | |
792 | len = strlen(name); | |
3a1ee7e8 | 793 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 794 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 795 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 796 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
797 | return f; |
798 | } | |
799 | } | |
3a1ee7e8 NIS |
800 | if (load && PL_subname && PL_def_layerlist |
801 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
802 | if (PL_in_load_module) { |
803 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
804 | return NULL; | |
805 | } else { | |
396482e1 | 806 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 807 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 808 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 809 | ENTER; |
d7a09b41 | 810 | SAVEINT(PL_in_load_module); |
c9bca74a | 811 | if (cv) { |
9cfa90c0 | 812 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 813 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 814 | } |
d7a09b41 SR |
815 | PL_in_load_module++; |
816 | /* | |
817 | * The two SVs are magically freed by load_module | |
818 | */ | |
a0714e2c | 819 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
820 | PL_in_load_module--; |
821 | LEAVE; | |
822 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
823 | } | |
14a5cf38 JH |
824 | } |
825 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
826 | return NULL; | |
f3862f8b NIS |
827 | } |
828 | ||
2a1bc955 | 829 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
830 | |
831 | static int | |
832 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
833 | { | |
14a5cf38 | 834 | if (SvROK(sv)) { |
159b6efe | 835 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
836 | PerlIO * const ifp = IoIFP(io); |
837 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
838 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
839 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
840 | } |
841 | return 0; | |
b13b2135 NIS |
842 | } |
843 | ||
844 | static int | |
845 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
846 | { | |
14a5cf38 | 847 | if (SvROK(sv)) { |
159b6efe | 848 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
849 | PerlIO * const ifp = IoIFP(io); |
850 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
851 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
852 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
853 | } |
854 | return 0; | |
b13b2135 NIS |
855 | } |
856 | ||
857 | static int | |
858 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
859 | { | |
be2597df | 860 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 861 | return 0; |
b13b2135 NIS |
862 | } |
863 | ||
864 | static int | |
865 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
866 | { | |
be2597df | 867 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 868 | return 0; |
b13b2135 NIS |
869 | } |
870 | ||
871 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
872 | perlio_mg_get, |
873 | perlio_mg_set, | |
22569500 | 874 | NULL, /* len */ |
14a5cf38 JH |
875 | perlio_mg_clear, |
876 | perlio_mg_free | |
b13b2135 NIS |
877 | }; |
878 | ||
879 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
880 | { | |
14a5cf38 | 881 | dXSARGS; |
dcda55fc AL |
882 | SV * const sv = SvRV(ST(1)); |
883 | AV * const av = newAV(); | |
14a5cf38 JH |
884 | MAGIC *mg; |
885 | int count = 0; | |
886 | int i; | |
ad64d0ec | 887 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
888 | SvRMAGICAL_off(sv); |
889 | mg = mg_find(sv, PERL_MAGIC_ext); | |
890 | mg->mg_virtual = &perlio_vtab; | |
891 | mg_magical(sv); | |
be2597df | 892 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
893 | for (i = 2; i < items; i++) { |
894 | STRLEN len; | |
dcda55fc AL |
895 | const char * const name = SvPV_const(ST(i), len); |
896 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 897 | if (layer) { |
b37c2d43 | 898 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
899 | } |
900 | else { | |
901 | ST(count) = ST(i); | |
902 | count++; | |
903 | } | |
904 | } | |
905 | SvREFCNT_dec(av); | |
906 | XSRETURN(count); | |
907 | } | |
908 | ||
22569500 | 909 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 910 | |
e3f3bf95 NIS |
911 | SV * |
912 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 913 | { |
da51bb9b | 914 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 915 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 916 | return sv; |
e3f3bf95 NIS |
917 | } |
918 | ||
5ca1d77f | 919 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 920 | { |
37725cdc | 921 | /* This is used as a %SIG{__WARN__} handler to supress warnings |
c9bca74a NIS |
922 | during loading of layers. |
923 | */ | |
97aff369 | 924 | dVAR; |
c9bca74a | 925 | dXSARGS; |
58c0efa5 | 926 | PERL_UNUSED_ARG(cv); |
c9bca74a | 927 | if (items) |
e62f0680 | 928 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
929 | XSRETURN(0); |
930 | } | |
931 | ||
5ca1d77f | 932 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 933 | { |
97aff369 | 934 | dVAR; |
14a5cf38 | 935 | dXSARGS; |
58c0efa5 | 936 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
937 | if (items < 2) |
938 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
939 | else { | |
de009b76 | 940 | STRLEN len; |
46c461b5 | 941 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 942 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 943 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
944 | ST(0) = |
945 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
946 | &PL_sv_undef; | |
947 | XSRETURN(1); | |
948 | } | |
0c4f7ff0 NIS |
949 | } |
950 | ||
e3f3bf95 NIS |
951 | void |
952 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
953 | { | |
97aff369 | 954 | dVAR; |
3a1ee7e8 NIS |
955 | if (!PL_known_layers) |
956 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 957 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 958 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
959 | } |
960 | ||
1141d9f8 | 961 | int |
fcf2db38 | 962 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 963 | { |
97aff369 | 964 | dVAR; |
14a5cf38 JH |
965 | if (names) { |
966 | const char *s = names; | |
967 | while (*s) { | |
968 | while (isSPACE(*s) || *s == ':') | |
969 | s++; | |
970 | if (*s) { | |
971 | STRLEN llen = 0; | |
972 | const char *e = s; | |
bd61b366 | 973 | const char *as = NULL; |
14a5cf38 JH |
974 | STRLEN alen = 0; |
975 | if (!isIDFIRST(*s)) { | |
976 | /* | |
977 | * Message is consistent with how attribute lists are | |
978 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 979 | * seen as an invalid separator character. |
14a5cf38 | 980 | */ |
de009b76 | 981 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
982 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
983 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
984 | q, *s, q, s); | |
93189314 | 985 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
986 | return -1; |
987 | } | |
988 | do { | |
989 | e++; | |
990 | } while (isALNUM(*e)); | |
991 | llen = e - s; | |
992 | if (*e == '(') { | |
993 | int nesting = 1; | |
994 | as = ++e; | |
995 | while (nesting) { | |
996 | switch (*e++) { | |
997 | case ')': | |
998 | if (--nesting == 0) | |
999 | alen = (e - 1) - as; | |
1000 | break; | |
1001 | case '(': | |
1002 | ++nesting; | |
1003 | break; | |
1004 | case '\\': | |
1005 | /* | |
1006 | * It's a nul terminated string, not allowed | |
1007 | * to \ the terminating null. Anything other | |
71200d45 | 1008 | * character is passed over. |
14a5cf38 JH |
1009 | */ |
1010 | if (*e++) { | |
1011 | break; | |
1012 | } | |
1013 | /* | |
71200d45 | 1014 | * Drop through |
14a5cf38 JH |
1015 | */ |
1016 | case '\0': | |
1017 | e--; | |
a2a5de95 NC |
1018 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1019 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
1020 | (int) (e - s), s); | |
14a5cf38 JH |
1021 | return -1; |
1022 | default: | |
1023 | /* | |
71200d45 | 1024 | * boring. |
14a5cf38 JH |
1025 | */ |
1026 | break; | |
1027 | } | |
1028 | } | |
1029 | } | |
1030 | if (e > s) { | |
46c461b5 | 1031 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1032 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1033 | if (layer) { | |
a951d81d BL |
1034 | SV *arg = NULL; |
1035 | if (as) | |
1036 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1037 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 1038 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 1039 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1040 | } |
1041 | else { | |
a2a5de95 NC |
1042 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
1043 | (int) llen, s); | |
14a5cf38 JH |
1044 | return -1; |
1045 | } | |
1046 | } | |
1047 | s = e; | |
1048 | } | |
1049 | } | |
1050 | } | |
1051 | return 0; | |
1141d9f8 NIS |
1052 | } |
1053 | ||
dfebf958 | 1054 | void |
fcf2db38 | 1055 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1056 | { |
97aff369 | 1057 | dVAR; |
27da23d5 | 1058 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1059 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1060 | tab = &PerlIO_crlf; |
846be114 | 1061 | #else |
6ce75a77 | 1062 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1063 | tab = &PerlIO_stdio; |
846be114 | 1064 | #endif |
14a5cf38 | 1065 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1066 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1067 | &PL_sv_undef); |
dfebf958 NIS |
1068 | } |
1069 | ||
e3f3bf95 | 1070 | SV * |
14a5cf38 | 1071 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1072 | { |
14a5cf38 | 1073 | return av->array[n].arg; |
e3f3bf95 NIS |
1074 | } |
1075 | ||
f3862f8b | 1076 | PerlIO_funcs * |
14a5cf38 | 1077 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1078 | { |
14a5cf38 JH |
1079 | if (n >= 0 && n < av->cur) { |
1080 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1081 | av->array[n].funcs->name); | |
1082 | return av->array[n].funcs; | |
1083 | } | |
1084 | if (!def) | |
1085 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1086 | return def; | |
e3f3bf95 NIS |
1087 | } |
1088 | ||
4ec2216f NIS |
1089 | IV |
1090 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1091 | { | |
8772537c AL |
1092 | PERL_UNUSED_ARG(mode); |
1093 | PERL_UNUSED_ARG(arg); | |
1094 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1095 | if (PerlIOValid(f)) { |
1096 | PerlIO_flush(f); | |
1097 | PerlIO_pop(aTHX_ f); | |
1098 | return 0; | |
1099 | } | |
1100 | return -1; | |
1101 | } | |
1102 | ||
27da23d5 | 1103 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1104 | sizeof(PerlIO_funcs), |
1105 | "pop", | |
1106 | 0, | |
1107 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1108 | PerlIOPop_pushed, | |
1109 | NULL, | |
1110 | NULL, | |
1111 | NULL, | |
1112 | NULL, | |
1113 | NULL, | |
1114 | NULL, | |
1115 | NULL, | |
1116 | NULL, | |
1117 | NULL, | |
1118 | NULL, | |
de009b76 AL |
1119 | NULL, |
1120 | NULL, | |
4ec2216f NIS |
1121 | NULL, /* flush */ |
1122 | NULL, /* fill */ | |
1123 | NULL, | |
1124 | NULL, | |
1125 | NULL, | |
1126 | NULL, | |
1127 | NULL, /* get_base */ | |
1128 | NULL, /* get_bufsiz */ | |
1129 | NULL, /* get_ptr */ | |
1130 | NULL, /* get_cnt */ | |
1131 | NULL, /* set_ptrcnt */ | |
1132 | }; | |
1133 | ||
fcf2db38 | 1134 | PerlIO_list_t * |
e3f3bf95 NIS |
1135 | PerlIO_default_layers(pTHX) |
1136 | { | |
97aff369 | 1137 | dVAR; |
3a1ee7e8 | 1138 | if (!PL_def_layerlist) { |
bd61b366 | 1139 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1140 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1141 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1142 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1143 | #if defined(WIN32) |
27da23d5 | 1144 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1145 | #if 0 |
14a5cf38 | 1146 | osLayer = &PerlIO_win32; |
0c4128ad | 1147 | #endif |
2f8118af | 1148 | #endif |
27da23d5 JH |
1149 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1150 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1151 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1152 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1153 | #ifdef HAS_MMAP |
27da23d5 | 1154 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1155 | #endif |
27da23d5 JH |
1156 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1157 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1158 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1159 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1160 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1161 | &PL_sv_undef); | |
1162 | if (s) { | |
3a1ee7e8 | 1163 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1164 | } |
1165 | else { | |
3a1ee7e8 | 1166 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1167 | } |
1141d9f8 | 1168 | } |
3a1ee7e8 NIS |
1169 | if (PL_def_layerlist->cur < 2) { |
1170 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1171 | } |
3a1ee7e8 | 1172 | return PL_def_layerlist; |
e3f3bf95 NIS |
1173 | } |
1174 | ||
0c4f7ff0 NIS |
1175 | void |
1176 | Perl_boot_core_PerlIO(pTHX) | |
1177 | { | |
1178 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1179 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1180 | __FILE__); | |
0c4f7ff0 | 1181 | #endif |
14a5cf38 | 1182 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1183 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1184 | } |
e3f3bf95 NIS |
1185 | |
1186 | PerlIO_funcs * | |
1187 | PerlIO_default_layer(pTHX_ I32 n) | |
1188 | { | |
97aff369 | 1189 | dVAR; |
46c461b5 | 1190 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1191 | if (n < 0) |
1192 | n += av->cur; | |
27da23d5 | 1193 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1194 | } |
1195 | ||
a999f61b NIS |
1196 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1197 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1198 | |
1199 | void | |
1141d9f8 | 1200 | PerlIO_stdstreams(pTHX) |
60382766 | 1201 | { |
97aff369 | 1202 | dVAR; |
a1ea730d | 1203 | if (!PL_perlio) { |
14a5cf38 JH |
1204 | PerlIO_allocate(aTHX); |
1205 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); | |
1206 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1207 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1208 | } | |
60382766 NIS |
1209 | } |
1210 | ||
1211 | PerlIO * | |
27da23d5 | 1212 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1213 | { |
2dc2558e NIS |
1214 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
1215 | mismatch: | |
1216 | Perl_croak(aTHX_ "Layer does not match this perl"); | |
1217 | } | |
1218 | if (tab->size) { | |
b464bac0 | 1219 | PerlIOl *l; |
2dc2558e NIS |
1220 | if (tab->size < sizeof(PerlIOl)) { |
1221 | goto mismatch; | |
1222 | } | |
1223 | /* Real layer with a data area */ | |
002e75cf JH |
1224 | if (f) { |
1225 | char *temp; | |
1226 | Newxz(temp, tab->size, char); | |
1227 | l = (PerlIOl*)temp; | |
1228 | if (l) { | |
1229 | l->next = *f; | |
1230 | l->tab = (PerlIO_funcs*) tab; | |
1231 | *f = l; | |
1232 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1233 | (void*)f, tab->name, | |
1234 | (mode) ? mode : "(Null)", (void*)arg); | |
1235 | if (*l->tab->Pushed && | |
1236 | (*l->tab->Pushed) | |
1237 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1238 | PerlIO_pop(aTHX_ f); | |
1239 | return NULL; | |
1240 | } | |
2dc2558e | 1241 | } |
002e75cf JH |
1242 | else |
1243 | return NULL; | |
2dc2558e NIS |
1244 | } |
1245 | } | |
1246 | else if (f) { | |
1247 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1248 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1249 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1250 | if (tab->Pushed && |
27da23d5 | 1251 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1252 | return NULL; |
14a5cf38 JH |
1253 | } |
1254 | } | |
1255 | return f; | |
60382766 NIS |
1256 | } |
1257 | ||
dfebf958 | 1258 | IV |
86e05cf2 NIS |
1259 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1260 | { | |
1261 | if (PerlIOValid(f)) { | |
1262 | /* Is layer suitable for raw stream ? */ | |
1263 | if (PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1264 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1265 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1266 | } | |
1267 | else { | |
1268 | /* Not suitable - pop it */ | |
1269 | PerlIO_pop(aTHX_ f); | |
1270 | } | |
1271 | return 0; | |
1272 | } | |
1273 | return -1; | |
1274 | } | |
1275 | ||
1276 | IV | |
2dc2558e | 1277 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1278 | { |
8772537c AL |
1279 | PERL_UNUSED_ARG(mode); |
1280 | PERL_UNUSED_ARG(arg); | |
1281 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1282 | |
04892f78 | 1283 | if (PerlIOValid(f)) { |
86e05cf2 | 1284 | PerlIO *t; |
de009b76 | 1285 | const PerlIOl *l; |
14a5cf38 | 1286 | PerlIO_flush(f); |
86e05cf2 NIS |
1287 | /* |
1288 | * Strip all layers that are not suitable for a raw stream | |
1289 | */ | |
1290 | t = f; | |
1291 | while (t && (l = *t)) { | |
1292 | if (l->tab->Binmode) { | |
1293 | /* Has a handler - normal case */ | |
9d97e8b8 | 1294 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1295 | if (*t == l) { |
1296 | /* Layer still there - move down a layer */ | |
1297 | t = PerlIONext(t); | |
1298 | } | |
1299 | } | |
1300 | else { | |
1301 | return -1; | |
1302 | } | |
14a5cf38 JH |
1303 | } |
1304 | else { | |
86e05cf2 NIS |
1305 | /* No handler - pop it */ |
1306 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1307 | } |
1308 | } | |
86e05cf2 NIS |
1309 | if (PerlIOValid(f)) { |
1310 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); | |
1311 | return 0; | |
1312 | } | |
14a5cf38 JH |
1313 | } |
1314 | return -1; | |
dfebf958 NIS |
1315 | } |
1316 | ||
ac27b0f5 | 1317 | int |
14a5cf38 | 1318 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1319 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1320 | { |
14a5cf38 JH |
1321 | int code = 0; |
1322 | while (n < max) { | |
8772537c | 1323 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1324 | if (tab) { |
1325 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1326 | code = -1; | |
1327 | break; | |
1328 | } | |
1329 | } | |
1330 | n++; | |
1331 | } | |
1332 | return code; | |
e3f3bf95 NIS |
1333 | } |
1334 | ||
1335 | int | |
ac27b0f5 NIS |
1336 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1337 | { | |
14a5cf38 | 1338 | int code = 0; |
53f1b6d2 | 1339 | if (f && names) { |
8772537c | 1340 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1341 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1342 | if (code == 0) { | |
d9dac8cd | 1343 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1344 | } |
3a1ee7e8 | 1345 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1346 | } |
14a5cf38 | 1347 | return code; |
ac27b0f5 NIS |
1348 | } |
1349 | ||
f3862f8b | 1350 | |
60382766 | 1351 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1352 | /* |
71200d45 | 1353 | * Given the abstraction above the public API functions |
14a5cf38 | 1354 | */ |
60382766 NIS |
1355 | |
1356 | int | |
f5b9d040 | 1357 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1358 | { |
68b5363f PD |
1359 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
1360 | (PerlIOBase(f)) ? PerlIOBase(f)->tab->name : "(Null)", | |
1361 | iotype, mode, (names) ? names : "(Null)"); | |
1362 | ||
03c0554d NIS |
1363 | if (names) { |
1364 | /* Do not flush etc. if (e.g.) switching encodings. | |
1365 | if a pushed layer knows it needs to flush lower layers | |
1366 | (for example :unix which is never going to call them) | |
1367 | it can do the flush when it is pushed. | |
1368 | */ | |
1369 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1370 | } | |
1371 | else { | |
86e05cf2 | 1372 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1373 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1374 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1375 | O_BINARY so we can look for it in mode. | |
1376 | */ | |
1377 | if (!(mode & O_BINARY)) { | |
1378 | /* Text mode */ | |
86e05cf2 NIS |
1379 | /* FIXME?: Looking down the layer stack seems wrong, |
1380 | but is a way of reaching past (say) an encoding layer | |
1381 | to flip CRLF-ness of the layer(s) below | |
1382 | */ | |
03c0554d NIS |
1383 | while (*f) { |
1384 | /* Perhaps we should turn on bottom-most aware layer | |
1385 | e.g. Ilya's idea that UNIX TTY could serve | |
1386 | */ | |
1387 | if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { | |
1388 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1389 | /* Not in text mode - flush any pending stuff and flip it */ | |
1390 | PerlIO_flush(f); | |
1391 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1392 | } | |
1393 | /* Only need to turn it on in one layer so we are done */ | |
1394 | return TRUE; | |
ed53a2bb | 1395 | } |
03c0554d | 1396 | f = PerlIONext(f); |
14a5cf38 | 1397 | } |
03c0554d NIS |
1398 | /* Not finding a CRLF aware layer presumably means we are binary |
1399 | which is not what was requested - so we failed | |
1400 | We _could_ push :crlf layer but so could caller | |
1401 | */ | |
1402 | return FALSE; | |
14a5cf38 | 1403 | } |
6ce75a77 | 1404 | #endif |
86e05cf2 NIS |
1405 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1406 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1407 | */ |
a0714e2c | 1408 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1409 | } |
f5b9d040 NIS |
1410 | } |
1411 | ||
f5b9d040 | 1412 | int |
e87a358a | 1413 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1414 | { |
37725cdc | 1415 | if (PerlIOValid(f)) { |
46c461b5 | 1416 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1417 | if (tab && tab->Close) |
1418 | return (*tab->Close)(aTHX_ f); | |
1419 | else | |
1420 | return PerlIOBase_close(aTHX_ f); | |
1421 | } | |
14a5cf38 | 1422 | else { |
93189314 | 1423 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1424 | return -1; |
1425 | } | |
76ced9ad NIS |
1426 | } |
1427 | ||
b931b1d9 | 1428 | int |
e87a358a | 1429 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1430 | { |
de009b76 | 1431 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1432 | while (PerlIOValid(f)) { |
1433 | PerlIO_pop(aTHX_ f); | |
f6c77cf1 | 1434 | } |
14a5cf38 | 1435 | return code; |
b931b1d9 NIS |
1436 | } |
1437 | ||
b931b1d9 | 1438 | int |
e87a358a | 1439 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1440 | { |
97aff369 | 1441 | dVAR; |
b32dd47e | 1442 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1443 | } |
1444 | ||
1141d9f8 | 1445 | |
fcf2db38 | 1446 | static PerlIO_funcs * |
2edd7e44 NIS |
1447 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1448 | { | |
97aff369 | 1449 | dVAR; |
14a5cf38 | 1450 | /* |
71200d45 | 1451 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1452 | */ |
75208dda RGS |
1453 | if (SvTYPE(sv) < SVt_PVAV) { |
1454 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); | |
1455 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1456 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 NC |
1457 | if (!f) |
1458 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); | |
75208dda RGS |
1459 | return f; |
1460 | } | |
14a5cf38 JH |
1461 | |
1462 | /* | |
71200d45 | 1463 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1464 | */ |
1465 | switch (SvTYPE(sv)) { | |
1466 | case SVt_PVAV: | |
6a245ed1 | 1467 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1468 | case SVt_PVHV: |
6a245ed1 | 1469 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1470 | case SVt_PVCV: |
6a245ed1 | 1471 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1472 | case SVt_PVGV: |
6a245ed1 | 1473 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1474 | default: |
1475 | return NULL; | |
14a5cf38 | 1476 | } |
2edd7e44 NIS |
1477 | } |
1478 | ||
fcf2db38 | 1479 | PerlIO_list_t * |
14a5cf38 JH |
1480 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1481 | const char *mode, int narg, SV **args) | |
1482 | { | |
97aff369 | 1483 | dVAR; |
14a5cf38 JH |
1484 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1485 | int incdef = 1; | |
a1ea730d | 1486 | if (!PL_perlio) |
14a5cf38 JH |
1487 | PerlIO_stdstreams(aTHX); |
1488 | if (narg) { | |
dcda55fc | 1489 | SV * const arg = *args; |
14a5cf38 | 1490 | /* |
71200d45 NIS |
1491 | * If it is a reference but not an object see if we have a handler |
1492 | * for it | |
14a5cf38 JH |
1493 | */ |
1494 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1495 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1496 | if (handler) { |
3a1ee7e8 NIS |
1497 | def = PerlIO_list_alloc(aTHX); |
1498 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1499 | incdef = 0; |
1500 | } | |
1501 | /* | |
e934609f | 1502 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1503 | * something sensible else we will just stringfy and open |
71200d45 | 1504 | * resulting string. |
14a5cf38 JH |
1505 | */ |
1506 | } | |
1507 | } | |
9fe371da | 1508 | if (!layers || !*layers) |
11bcd5da | 1509 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1510 | if (layers && *layers) { |
1511 | PerlIO_list_t *av; | |
1512 | if (incdef) { | |
a951d81d | 1513 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1514 | } |
1515 | else { | |
1516 | av = def; | |
1517 | } | |
0cff2cf3 NIS |
1518 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1519 | return av; | |
1520 | } | |
1521 | else { | |
1522 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1523 | return NULL; |
0cff2cf3 | 1524 | } |
14a5cf38 JH |
1525 | } |
1526 | else { | |
1527 | if (incdef) | |
1528 | def->refcnt++; | |
1529 | return def; | |
1530 | } | |
ee518936 NIS |
1531 | } |
1532 | ||
1533 | PerlIO * | |
14a5cf38 JH |
1534 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1535 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1536 | { | |
97aff369 | 1537 | dVAR; |
14a5cf38 JH |
1538 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1539 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1540 | if (!layers || !*layers) |
11bcd5da | 1541 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1542 | if (layers && *layers) |
1543 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1544 | } | |
1545 | } | |
1546 | else { | |
de009b76 | 1547 | PerlIO_list_t *layera; |
14a5cf38 JH |
1548 | IV n; |
1549 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1550 | if (PerlIOValid(f)) { |
14a5cf38 | 1551 | /* |
71200d45 NIS |
1552 | * This is "reopen" - it is not tested as perl does not use it |
1553 | * yet | |
14a5cf38 JH |
1554 | */ |
1555 | PerlIOl *l = *f; | |
3a1ee7e8 | 1556 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1557 | while (l) { |
a951d81d BL |
1558 | SV *arg = NULL; |
1559 | if (l->tab->Getarg) | |
1560 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); | |
1561 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1562 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1563 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1564 | l = *PerlIONext(&l); |
1565 | } | |
1566 | } | |
1567 | else { | |
1568 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1569 | if (!layera) { |
1570 | return NULL; | |
1571 | } | |
14a5cf38 JH |
1572 | } |
1573 | /* | |
71200d45 | 1574 | * Start at "top" of layer stack |
14a5cf38 JH |
1575 | */ |
1576 | n = layera->cur - 1; | |
1577 | while (n >= 0) { | |
46c461b5 | 1578 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1579 | if (t && t->Open) { |
1580 | tab = t; | |
1581 | break; | |
1582 | } | |
1583 | n--; | |
1584 | } | |
1585 | if (tab) { | |
1586 | /* | |
71200d45 | 1587 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1588 | */ |
7cf31beb | 1589 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1590 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1591 | } |
14a5cf38 | 1592 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1593 | tab->name, layers ? layers : "(Null)", mode, fd, |
1594 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1595 | if (tab->Open) |
1596 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1597 | f, narg, args); | |
1598 | else { | |
1599 | SETERRNO(EINVAL, LIB_INVARG); | |
1600 | f = NULL; | |
1601 | } | |
14a5cf38 JH |
1602 | if (f) { |
1603 | if (n + 1 < layera->cur) { | |
1604 | /* | |
1605 | * More layers above the one that we used to open - | |
71200d45 | 1606 | * apply them now |
14a5cf38 | 1607 | */ |
d9dac8cd NIS |
1608 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1609 | /* If pushing layers fails close the file */ | |
1610 | PerlIO_close(f); | |
14a5cf38 JH |
1611 | f = NULL; |
1612 | } | |
1613 | } | |
1614 | } | |
1615 | } | |
3a1ee7e8 | 1616 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1617 | } |
1618 | return f; | |
ee518936 | 1619 | } |
b931b1d9 NIS |
1620 | |
1621 | ||
9e353e3b | 1622 | SSize_t |
e87a358a | 1623 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1624 | { |
7918f24d NC |
1625 | PERL_ARGS_ASSERT_PERLIO_READ; |
1626 | ||
b32dd47e | 1627 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1628 | } |
1629 | ||
313ca112 | 1630 | SSize_t |
e87a358a | 1631 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1632 | { |
7918f24d NC |
1633 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1634 | ||
b32dd47e | 1635 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1636 | } |
1637 | ||
9e353e3b | 1638 | SSize_t |
e87a358a | 1639 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1640 | { |
7918f24d NC |
1641 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1642 | ||
b32dd47e | 1643 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1644 | } |
1645 | ||
6f9d8c32 | 1646 | int |
e87a358a | 1647 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1648 | { |
b32dd47e | 1649 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1650 | } |
1651 | ||
9e353e3b | 1652 | Off_t |
e87a358a | 1653 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1654 | { |
b32dd47e | 1655 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1656 | } |
1657 | ||
6f9d8c32 | 1658 | int |
e87a358a | 1659 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1660 | { |
97aff369 | 1661 | dVAR; |
14a5cf38 JH |
1662 | if (f) { |
1663 | if (*f) { | |
de009b76 | 1664 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1665 | |
1666 | if (tab && tab->Flush) | |
f62ce20a | 1667 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1668 | else |
1669 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1670 | } |
1671 | else { | |
fe5a182c | 1672 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1673 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1674 | return -1; |
1675 | } | |
1676 | } | |
1677 | else { | |
1678 | /* | |
1679 | * Is it good API design to do flush-all on NULL, a potentially | |
1680 | * errorneous input? Maybe some magical value (PerlIO* | |
1681 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1682 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1683 | * decisions? --jhi |
14a5cf38 | 1684 | */ |
a1ea730d | 1685 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1686 | int code = 0; |
1687 | while ((f = *table)) { | |
1688 | int i; | |
1689 | table = (PerlIO **) (f++); | |
1690 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1691 | if (*f && PerlIO_flush(f) != 0) | |
1692 | code = -1; | |
1693 | f++; | |
1694 | } | |
1695 | } | |
1696 | return code; | |
1697 | } | |
760ac839 LW |
1698 | } |
1699 | ||
a9c883f6 | 1700 | void |
f62ce20a | 1701 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1702 | { |
97aff369 | 1703 | dVAR; |
a1ea730d | 1704 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1705 | PerlIO *f; |
1706 | while ((f = *table)) { | |
1707 | int i; | |
1708 | table = (PerlIO **) (f++); | |
1709 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1710 | if (*f | |
1711 | && (PerlIOBase(f)-> | |
1712 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1713 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1714 | PerlIO_flush(f); | |
1715 | f++; | |
1716 | } | |
a9c883f6 | 1717 | } |
a9c883f6 NIS |
1718 | } |
1719 | ||
06da4f11 | 1720 | int |
e87a358a | 1721 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1722 | { |
b32dd47e | 1723 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1724 | } |
1725 | ||
f3862f8b NIS |
1726 | int |
1727 | PerlIO_isutf8(PerlIO *f) | |
1728 | { | |
1b7a0411 JH |
1729 | if (PerlIOValid(f)) |
1730 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1731 | else | |
1732 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1733 | |
1b7a0411 | 1734 | return -1; |
f3862f8b NIS |
1735 | } |
1736 | ||
6f9d8c32 | 1737 | int |
e87a358a | 1738 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1739 | { |
b32dd47e | 1740 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1741 | } |
1742 | ||
9e353e3b | 1743 | int |
e87a358a | 1744 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1745 | { |
b32dd47e | 1746 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1747 | } |
1748 | ||
9e353e3b | 1749 | void |
e87a358a | 1750 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1751 | { |
b32dd47e | 1752 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1753 | } |
1754 | ||
9e353e3b | 1755 | void |
e87a358a | 1756 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1757 | { |
b32dd47e | 1758 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1759 | } |
1760 | ||
9e353e3b NIS |
1761 | int |
1762 | PerlIO_has_base(PerlIO *f) | |
1763 | { | |
1b7a0411 | 1764 | if (PerlIOValid(f)) { |
46c461b5 | 1765 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1766 | |
1767 | if (tab) | |
1768 | return (tab->Get_base != NULL); | |
1b7a0411 | 1769 | } |
1b7a0411 JH |
1770 | |
1771 | return 0; | |
760ac839 LW |
1772 | } |
1773 | ||
9e353e3b NIS |
1774 | int |
1775 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1776 | { |
d7dfc388 SK |
1777 | if (PerlIOValid(f)) { |
1778 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1779 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1780 | |
d7dfc388 SK |
1781 | if (tab) |
1782 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1783 | } |
14a5cf38 | 1784 | } |
1b7a0411 | 1785 | |
14a5cf38 | 1786 | return 0; |
9e353e3b NIS |
1787 | } |
1788 | ||
9e353e3b NIS |
1789 | int |
1790 | PerlIO_has_cntptr(PerlIO *f) | |
1791 | { | |
04892f78 | 1792 | if (PerlIOValid(f)) { |
46c461b5 | 1793 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1794 | |
1795 | if (tab) | |
1796 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1797 | } |
1b7a0411 | 1798 | |
14a5cf38 | 1799 | return 0; |
9e353e3b NIS |
1800 | } |
1801 | ||
9e353e3b NIS |
1802 | int |
1803 | PerlIO_canset_cnt(PerlIO *f) | |
1804 | { | |
04892f78 | 1805 | if (PerlIOValid(f)) { |
46c461b5 | 1806 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1807 | |
1808 | if (tab) | |
1809 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1810 | } |
1b7a0411 | 1811 | |
14a5cf38 | 1812 | return 0; |
760ac839 LW |
1813 | } |
1814 | ||
888911fc | 1815 | STDCHAR * |
e87a358a | 1816 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1817 | { |
b32dd47e | 1818 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1819 | } |
1820 | ||
9e353e3b | 1821 | int |
e87a358a | 1822 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1823 | { |
b32dd47e | 1824 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1825 | } |
1826 | ||
9e353e3b | 1827 | STDCHAR * |
e87a358a | 1828 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1829 | { |
b32dd47e | 1830 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1831 | } |
1832 | ||
05d1247b | 1833 | int |
e87a358a | 1834 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1835 | { |
b32dd47e | 1836 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1837 | } |
1838 | ||
9e353e3b | 1839 | void |
e87a358a | 1840 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1841 | { |
b32dd47e | 1842 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1843 | } |
1844 | ||
9e353e3b | 1845 | void |
e87a358a | 1846 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1847 | { |
b32dd47e | 1848 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1849 | } |
1850 | ||
4ec2216f | 1851 | |
9e353e3b | 1852 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1853 | /* |
71200d45 | 1854 | * utf8 and raw dummy layers |
14a5cf38 | 1855 | */ |
dfebf958 | 1856 | |
26fb694e | 1857 | IV |
2dc2558e | 1858 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1859 | { |
96a5add6 | 1860 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1861 | PERL_UNUSED_ARG(mode); |
1862 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1863 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1864 | if (tab->kind & PERLIO_K_UTF8) |
1865 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1866 | else | |
1867 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1868 | return 0; | |
1869 | } | |
1870 | return -1; | |
26fb694e NIS |
1871 | } |
1872 | ||
27da23d5 | 1873 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1874 | sizeof(PerlIO_funcs), |
14a5cf38 | 1875 | "utf8", |
2dc2558e | 1876 | 0, |
6874a2de | 1877 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1878 | PerlIOUtf8_pushed, |
1879 | NULL, | |
1880 | NULL, | |
1881 | NULL, | |
1882 | NULL, | |
1883 | NULL, | |
1884 | NULL, | |
1885 | NULL, | |
1886 | NULL, | |
1887 | NULL, | |
1888 | NULL, | |
de009b76 AL |
1889 | NULL, |
1890 | NULL, | |
22569500 NIS |
1891 | NULL, /* flush */ |
1892 | NULL, /* fill */ | |
14a5cf38 JH |
1893 | NULL, |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
22569500 NIS |
1897 | NULL, /* get_base */ |
1898 | NULL, /* get_bufsiz */ | |
1899 | NULL, /* get_ptr */ | |
1900 | NULL, /* get_cnt */ | |
1901 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1902 | }; |
1903 | ||
27da23d5 | 1904 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1905 | sizeof(PerlIO_funcs), |
14a5cf38 | 1906 | "bytes", |
2dc2558e | 1907 | 0, |
14a5cf38 JH |
1908 | PERLIO_K_DUMMY, |
1909 | PerlIOUtf8_pushed, | |
1910 | NULL, | |
1911 | NULL, | |
1912 | NULL, | |
1913 | NULL, | |
1914 | NULL, | |
1915 | NULL, | |
1916 | NULL, | |
1917 | NULL, | |
1918 | NULL, | |
1919 | NULL, | |
de009b76 AL |
1920 | NULL, |
1921 | NULL, | |
22569500 NIS |
1922 | NULL, /* flush */ |
1923 | NULL, /* fill */ | |
14a5cf38 JH |
1924 | NULL, |
1925 | NULL, | |
1926 | NULL, | |
1927 | NULL, | |
22569500 NIS |
1928 | NULL, /* get_base */ |
1929 | NULL, /* get_bufsiz */ | |
1930 | NULL, /* get_ptr */ | |
1931 | NULL, /* get_cnt */ | |
1932 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1933 | }; |
1934 | ||
1935 | PerlIO * | |
14a5cf38 JH |
1936 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1937 | IV n, const char *mode, int fd, int imode, int perm, | |
1938 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1939 | { |
8772537c AL |
1940 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1941 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1942 | if (tab && tab->Open) |
1943 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1944 | old, narg, args); | |
1945 | SETERRNO(EINVAL, LIB_INVARG); | |
1946 | return NULL; | |
dfebf958 NIS |
1947 | } |
1948 | ||
27da23d5 | 1949 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1950 | sizeof(PerlIO_funcs), |
14a5cf38 | 1951 | "raw", |
2dc2558e | 1952 | 0, |
14a5cf38 JH |
1953 | PERLIO_K_DUMMY, |
1954 | PerlIORaw_pushed, | |
1955 | PerlIOBase_popped, | |
1956 | PerlIORaw_open, | |
1957 | NULL, | |
1958 | NULL, | |
1959 | NULL, | |
1960 | NULL, | |
1961 | NULL, | |
1962 | NULL, | |
1963 | NULL, | |
1964 | NULL, | |
de009b76 AL |
1965 | NULL, |
1966 | NULL, | |
22569500 NIS |
1967 | NULL, /* flush */ |
1968 | NULL, /* fill */ | |
14a5cf38 JH |
1969 | NULL, |
1970 | NULL, | |
1971 | NULL, | |
1972 | NULL, | |
22569500 NIS |
1973 | NULL, /* get_base */ |
1974 | NULL, /* get_bufsiz */ | |
1975 | NULL, /* get_ptr */ | |
1976 | NULL, /* get_cnt */ | |
1977 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1978 | }; |
1979 | /*--------------------------------------------------------------------------------------*/ | |
1980 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1981 | /* |
71200d45 | 1982 | * "Methods" of the "base class" |
14a5cf38 | 1983 | */ |
9e353e3b NIS |
1984 | |
1985 | IV | |
f62ce20a | 1986 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1987 | { |
04892f78 | 1988 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1989 | } |
1990 | ||
f5b9d040 | 1991 | char * |
81428673 | 1992 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1993 | { |
1994 | char *s = buf; | |
81428673 | 1995 | if (PerlIOValid(f)) { |
de009b76 | 1996 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1997 | if (flags & PERLIO_F_APPEND) { |
1998 | *s++ = 'a'; | |
1999 | if (flags & PERLIO_F_CANREAD) { | |
2000 | *s++ = '+'; | |
2001 | } | |
14a5cf38 | 2002 | } |
81428673 NIS |
2003 | else if (flags & PERLIO_F_CANREAD) { |
2004 | *s++ = 'r'; | |
2005 | if (flags & PERLIO_F_CANWRITE) | |
2006 | *s++ = '+'; | |
2007 | } | |
2008 | else if (flags & PERLIO_F_CANWRITE) { | |
2009 | *s++ = 'w'; | |
2010 | if (flags & PERLIO_F_CANREAD) { | |
2011 | *s++ = '+'; | |
2012 | } | |
14a5cf38 | 2013 | } |
35990314 | 2014 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2015 | if (!(flags & PERLIO_F_CRLF)) |
2016 | *s++ = 'b'; | |
5f1a76d0 | 2017 | #endif |
81428673 | 2018 | } |
14a5cf38 JH |
2019 | *s = '\0'; |
2020 | return buf; | |
f5b9d040 NIS |
2021 | } |
2022 | ||
81428673 | 2023 | |
76ced9ad | 2024 | IV |
2dc2558e | 2025 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2026 | { |
de009b76 | 2027 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2028 | PERL_UNUSED_CONTEXT; |
8772537c | 2029 | PERL_UNUSED_ARG(arg); |
de009b76 | 2030 | |
14a5cf38 JH |
2031 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2032 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2033 | if (tab->Set_ptrcnt != NULL) | |
2034 | l->flags |= PERLIO_F_FASTGETS; | |
2035 | if (mode) { | |
3b6c1aba | 2036 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2037 | mode++; |
2038 | switch (*mode++) { | |
2039 | case 'r': | |
2040 | l->flags |= PERLIO_F_CANREAD; | |
2041 | break; | |
2042 | case 'a': | |
2043 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2044 | break; | |
2045 | case 'w': | |
2046 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2047 | break; | |
2048 | default: | |
93189314 | 2049 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2050 | return -1; |
2051 | } | |
2052 | while (*mode) { | |
2053 | switch (*mode++) { | |
2054 | case '+': | |
2055 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2056 | break; | |
2057 | case 'b': | |
2058 | l->flags &= ~PERLIO_F_CRLF; | |
2059 | break; | |
2060 | case 't': | |
2061 | l->flags |= PERLIO_F_CRLF; | |
2062 | break; | |
2063 | default: | |
93189314 | 2064 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2065 | return -1; |
2066 | } | |
2067 | } | |
2068 | } | |
2069 | else { | |
2070 | if (l->next) { | |
2071 | l->flags |= l->next->flags & | |
2072 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2073 | PERLIO_F_APPEND); | |
2074 | } | |
2075 | } | |
5e2ab84b | 2076 | #if 0 |
14a5cf38 | 2077 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2078 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2079 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2080 | #endif |
14a5cf38 | 2081 | return 0; |
76ced9ad NIS |
2082 | } |
2083 | ||
2084 | IV | |
f62ce20a | 2085 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2086 | { |
96a5add6 | 2087 | PERL_UNUSED_CONTEXT; |
8772537c | 2088 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2089 | return 0; |
760ac839 LW |
2090 | } |
2091 | ||
9e353e3b | 2092 | SSize_t |
f62ce20a | 2093 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2094 | { |
14a5cf38 | 2095 | /* |
71200d45 | 2096 | * Save the position as current head considers it |
14a5cf38 | 2097 | */ |
de009b76 | 2098 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2099 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2100 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2101 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2102 | } |
2103 | ||
f6c77cf1 | 2104 | SSize_t |
f62ce20a | 2105 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2106 | { |
14a5cf38 JH |
2107 | STDCHAR *buf = (STDCHAR *) vbuf; |
2108 | if (f) { | |
263df5f1 JH |
2109 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2110 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2111 | SETERRNO(EBADF, SS_IVCHAN); | |
2112 | return 0; | |
2113 | } | |
14a5cf38 | 2114 | while (count > 0) { |
93c2c2ec IZ |
2115 | get_cnt: |
2116 | { | |
14a5cf38 JH |
2117 | SSize_t avail = PerlIO_get_cnt(f); |
2118 | SSize_t take = 0; | |
2119 | if (avail > 0) | |
bb7a0f54 | 2120 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2121 | if (take > 0) { |
2122 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2123 | Copy(ptr, buf, take, STDCHAR); | |
2124 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2125 | count -= take; | |
2126 | buf += take; | |
93c2c2ec IZ |
2127 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2128 | goto get_cnt; | |
14a5cf38 JH |
2129 | } |
2130 | if (count > 0 && avail <= 0) { | |
2131 | if (PerlIO_fill(f) != 0) | |
2132 | break; | |
2133 | } | |
93c2c2ec | 2134 | } |
14a5cf38 JH |
2135 | } |
2136 | return (buf - (STDCHAR *) vbuf); | |
2137 | } | |
f6c77cf1 | 2138 | return 0; |
f6c77cf1 NIS |
2139 | } |
2140 | ||
9e353e3b | 2141 | IV |
f62ce20a | 2142 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2143 | { |
96a5add6 | 2144 | PERL_UNUSED_CONTEXT; |
8772537c | 2145 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2146 | return 0; |
9e353e3b NIS |
2147 | } |
2148 | ||
2149 | IV | |
f62ce20a | 2150 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2151 | { |
96a5add6 | 2152 | PERL_UNUSED_CONTEXT; |
8772537c | 2153 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2154 | return -1; |
06da4f11 NIS |
2155 | } |
2156 | ||
2157 | IV | |
f62ce20a | 2158 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2159 | { |
37725cdc NIS |
2160 | IV code = -1; |
2161 | if (PerlIOValid(f)) { | |
2162 | PerlIO *n = PerlIONext(f); | |
2163 | code = PerlIO_flush(f); | |
2164 | PerlIOBase(f)->flags &= | |
2165 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2166 | while (PerlIOValid(n)) { | |
de009b76 | 2167 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2168 | if (tab && tab->Close) { |
2169 | if ((*tab->Close)(aTHX_ n) != 0) | |
2170 | code = -1; | |
2171 | break; | |
2172 | } | |
2173 | else { | |
2174 | PerlIOBase(n)->flags &= | |
2175 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2176 | } | |
2177 | n = PerlIONext(n); | |
2178 | } | |
2179 | } | |
2180 | else { | |
2181 | SETERRNO(EBADF, SS_IVCHAN); | |
2182 | } | |
14a5cf38 | 2183 | return code; |
9e353e3b NIS |
2184 | } |
2185 | ||
2186 | IV | |
f62ce20a | 2187 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2188 | { |
96a5add6 | 2189 | PERL_UNUSED_CONTEXT; |
04892f78 | 2190 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2191 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2192 | } | |
2193 | return 1; | |
9e353e3b NIS |
2194 | } |
2195 | ||
2196 | IV | |
f62ce20a | 2197 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2198 | { |
96a5add6 | 2199 | PERL_UNUSED_CONTEXT; |
04892f78 | 2200 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2201 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2202 | } | |
2203 | return 1; | |
9e353e3b NIS |
2204 | } |
2205 | ||
2206 | void | |
f62ce20a | 2207 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2208 | { |
04892f78 | 2209 | if (PerlIOValid(f)) { |
dcda55fc | 2210 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2211 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2212 | if (PerlIOValid(n)) |
14a5cf38 JH |
2213 | PerlIO_clearerr(n); |
2214 | } | |
9e353e3b NIS |
2215 | } |
2216 | ||
2217 | void | |
f62ce20a | 2218 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2219 | { |
96a5add6 | 2220 | PERL_UNUSED_CONTEXT; |
04892f78 | 2221 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2222 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2223 | } | |
9e353e3b NIS |
2224 | } |
2225 | ||
93a8090d NIS |
2226 | SV * |
2227 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2228 | { | |
2229 | if (!arg) | |
a0714e2c | 2230 | return NULL; |
93a8090d NIS |
2231 | #ifdef sv_dup |
2232 | if (param) { | |
a951d81d BL |
2233 | arg = sv_dup(arg, param); |
2234 | SvREFCNT_inc_simple_void_NN(arg); | |
2235 | return arg; | |
93a8090d NIS |
2236 | } |
2237 | else { | |
2238 | return newSVsv(arg); | |
2239 | } | |
2240 | #else | |
1b6737cc | 2241 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2242 | return newSVsv(arg); |
2243 | #endif | |
2244 | } | |
2245 | ||
2246 | PerlIO * | |
ecdeb87c | 2247 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2248 | { |
1b6737cc | 2249 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2250 | if (PerlIOValid(nexto)) { |
de009b76 | 2251 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2252 | if (tab && tab->Dup) |
2253 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2254 | else | |
2255 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2256 | } |
2257 | if (f) { | |
dcda55fc | 2258 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2259 | SV *arg = NULL; |
93a8090d | 2260 | char buf[8]; |
fe5a182c JH |
2261 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2262 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2263 | if (self->Getarg) |
2264 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2265 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2266 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2267 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
ef8d46e8 | 2268 | SvREFCNT_dec(arg); |
93a8090d NIS |
2269 | } |
2270 | return f; | |
2271 | } | |
2272 | ||
27da23d5 | 2273 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2274 | |
8b84d7dd | 2275 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2276 | static void |
2277 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2278 | dVAR; |
22c96fc1 | 2279 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2280 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2281 | int *new_array; |
2282 | ||
2283 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2284 | old_max, new_fd, new_max); | |
2285 | ||
2286 | if (new_fd < old_max) { | |
2287 | return; | |
2288 | } | |
2289 | ||
f4ae5be6 NC |
2290 | assert (new_max > new_fd); |
2291 | ||
eae082a0 JH |
2292 | /* Use plain realloc() since we need this memory to be really |
2293 | * global and visible to all the interpreters and/or threads. */ | |
2294 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2295 | |
2296 | if (!new_array) { | |
8b84d7dd | 2297 | #ifdef USE_ITHREADS |
6cb8cb21 | 2298 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2299 | #endif |
2300 | /* Can't use PerlIO to write as it allocates memory */ | |
2301 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2302 | PL_no_mem, strlen(PL_no_mem)); | |
2303 | my_exit(1); | |
2304 | } | |
2305 | ||
2306 | PL_perlio_fd_refcnt_size = new_max; | |
2307 | PL_perlio_fd_refcnt = new_array; | |
2308 | ||
95b63a38 JH |
2309 | PerlIO_debug("Zeroing %p, %d\n", |
2310 | (void*)(new_array + old_max), | |
2311 | new_max - old_max); | |
22c96fc1 NC |
2312 | |
2313 | Zero(new_array + old_max, new_max - old_max, int); | |
2314 | } | |
2315 | ||
2316 | ||
93a8090d NIS |
2317 | void |
2318 | PerlIO_init(pTHX) | |
2319 | { | |
8b84d7dd | 2320 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2321 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2322 | } |
2323 | ||
168d5872 NIS |
2324 | void |
2325 | PerlIOUnix_refcnt_inc(int fd) | |
2326 | { | |
27da23d5 | 2327 | dTHX; |
22c96fc1 | 2328 | if (fd >= 0) { |
97aff369 | 2329 | dVAR; |
22c96fc1 | 2330 | |
8b84d7dd | 2331 | #ifdef USE_ITHREADS |
6cb8cb21 | 2332 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2333 | #endif |
22c96fc1 NC |
2334 | if (fd >= PL_perlio_fd_refcnt_size) |
2335 | S_more_refcounted_fds(aTHX_ fd); | |
2336 | ||
27da23d5 | 2337 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd RGS |
2338 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
2339 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2340 | fd, PL_perlio_fd_refcnt[fd]); | |
2341 | } | |
2342 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2343 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2344 | |
8b84d7dd | 2345 | #ifdef USE_ITHREADS |
6cb8cb21 | 2346 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2347 | #endif |
8b84d7dd RGS |
2348 | } else { |
2349 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2350 | } |
2351 | } | |
2352 | ||
168d5872 NIS |
2353 | int |
2354 | PerlIOUnix_refcnt_dec(int fd) | |
2355 | { | |
27da23d5 | 2356 | dTHX; |
168d5872 | 2357 | int cnt = 0; |
22c96fc1 | 2358 | if (fd >= 0) { |
97aff369 | 2359 | dVAR; |
8b84d7dd | 2360 | #ifdef USE_ITHREADS |
6cb8cb21 | 2361 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2362 | #endif |
8b84d7dd RGS |
2363 | if (fd >= PL_perlio_fd_refcnt_size) { |
2364 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", | |
2365 | fd, PL_perlio_fd_refcnt_size); | |
2366 | } | |
2367 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2368 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", | |
2369 | fd, PL_perlio_fd_refcnt[fd]); | |
2370 | } | |
27da23d5 | 2371 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2372 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2373 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2374 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2375 | #endif |
8b84d7dd RGS |
2376 | } else { |
2377 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2378 | } |
2379 | return cnt; | |
2380 | } | |
2381 | ||
694c95cf JH |
2382 | void |
2383 | PerlIO_cleanup(pTHX) | |
2384 | { | |
97aff369 | 2385 | dVAR; |
694c95cf JH |
2386 | int i; |
2387 | #ifdef USE_ITHREADS | |
a25429c6 | 2388 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2389 | #else |
2390 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2391 | #endif |
e47547a8 | 2392 | |
694c95cf JH |
2393 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2394 | for (i=0; i < 3; i++) | |
2395 | PerlIOUnix_refcnt_inc(i); | |
2396 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2397 | /* Restore STDIN..STDERR refcount */ | |
2398 | for (i=0; i < 3; i++) | |
2399 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2400 | |
2401 | if (PL_known_layers) { | |
2402 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2403 | PL_known_layers = NULL; | |
2404 | } | |
27da23d5 | 2405 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2406 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2407 | PL_def_layerlist = NULL; | |
2408 | } | |
6cb8cb21 RGS |
2409 | } |
2410 | ||
0934c9d9 | 2411 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2412 | { |
53d44271 | 2413 | dVAR; |
4f3da17a DM |
2414 | #if 0 |
2415 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2416 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2417 | being present (at least in win32) :-(. | |
2418 | Disable for now. | |
2419 | */ | |
6cb8cb21 RGS |
2420 | #ifdef DEBUGGING |
2421 | { | |
2422 | /* By now all filehandles should have been closed, so any | |
2423 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2424 | * errors. */ | |
77db880c JH |
2425 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2426 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2427 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2428 | int i; |
2429 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2430 | if (PL_perlio_fd_refcnt[i]) { |
2431 | const STRLEN len = | |
2432 | my_snprintf(buf, sizeof(buf), | |
2433 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2434 | i, PL_perlio_fd_refcnt[i]); | |
2435 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2436 | } | |
6cb8cb21 RGS |
2437 | } |
2438 | } | |
2439 | #endif | |
4f3da17a | 2440 | #endif |
eae082a0 JH |
2441 | /* Not bothering with PL_perlio_mutex since by now |
2442 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2443 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2444 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2445 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2446 | PL_perlio_fd_refcnt = NULL; |
2447 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2448 | } |
694c95cf JH |
2449 | } |
2450 | ||
9e353e3b | 2451 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2452 | /* |
71200d45 | 2453 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2454 | */ |
9e353e3b | 2455 | |
14a5cf38 | 2456 | typedef struct { |
22569500 NIS |
2457 | struct _PerlIO base; /* The generic part */ |
2458 | int fd; /* UNIX like file descriptor */ | |
2459 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2460 | } PerlIOUnix; |
2461 | ||
6f9d8c32 | 2462 | int |
9e353e3b | 2463 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2464 | { |
14a5cf38 | 2465 | int oflags = -1; |
3b6c1aba | 2466 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2467 | mode++; |
2468 | switch (*mode) { | |
2469 | case 'r': | |
2470 | oflags = O_RDONLY; | |
2471 | if (*++mode == '+') { | |
2472 | oflags = O_RDWR; | |
2473 | mode++; | |
2474 | } | |
2475 | break; | |
2476 | ||
2477 | case 'w': | |
2478 | oflags = O_CREAT | O_TRUNC; | |
2479 | if (*++mode == '+') { | |
2480 | oflags |= O_RDWR; | |
2481 | mode++; | |
2482 | } | |
2483 | else | |
2484 | oflags |= O_WRONLY; | |
2485 | break; | |
2486 | ||
2487 | case 'a': | |
2488 | oflags = O_CREAT | O_APPEND; | |
2489 | if (*++mode == '+') { | |
2490 | oflags |= O_RDWR; | |
2491 | mode++; | |
2492 | } | |
2493 | else | |
2494 | oflags |= O_WRONLY; | |
2495 | break; | |
2496 | } | |
2497 | if (*mode == 'b') { | |
2498 | oflags |= O_BINARY; | |
2499 | oflags &= ~O_TEXT; | |
2500 | mode++; | |
2501 | } | |
2502 | else if (*mode == 't') { | |
2503 | oflags |= O_TEXT; | |
2504 | oflags &= ~O_BINARY; | |
2505 | mode++; | |
2506 | } | |
2507 | /* | |
71200d45 | 2508 | * Always open in binary mode |
14a5cf38 JH |
2509 | */ |
2510 | oflags |= O_BINARY; | |
2511 | if (*mode || oflags == -1) { | |
93189314 | 2512 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2513 | oflags = -1; |
2514 | } | |
2515 | return oflags; | |
9e353e3b NIS |
2516 | } |
2517 | ||
2518 | IV | |
f62ce20a | 2519 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2520 | { |
96a5add6 | 2521 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2522 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2523 | } |
2524 | ||
aa063c35 NIS |
2525 | static void |
2526 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2527 | { |
de009b76 | 2528 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2529 | #if defined(WIN32) |
aa063c35 NIS |
2530 | Stat_t st; |
2531 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2532 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2533 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2534 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2535 | } | |
aa063c35 NIS |
2536 | else { |
2537 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2538 | } | |
6caa5a9c NIS |
2539 | } |
2540 | #endif | |
aa063c35 NIS |
2541 | s->fd = fd; |
2542 | s->oflags = imode; | |
2543 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2544 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2545 | } |
2546 | ||
2547 | IV | |
2548 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2549 | { | |
2550 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2551 | if (*PerlIONext(f)) { |
4b069b44 | 2552 | /* We never call down so do any pending stuff now */ |
03c0554d | 2553 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2554 | /* |
71200d45 | 2555 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2556 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2557 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2558 | */ |
acbd16bf | 2559 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2560 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2561 | } |
2562 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2563 | |
14a5cf38 | 2564 | return code; |
4b803d04 NIS |
2565 | } |
2566 | ||
c2fcde81 JH |
2567 | IV |
2568 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2569 | { | |
de009b76 | 2570 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2571 | Off_t new_loc; |
96a5add6 | 2572 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2573 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2574 | #ifdef ESPIPE | |
2575 | SETERRNO(ESPIPE, LIB_INVARG); | |
2576 | #else | |
2577 | SETERRNO(EINVAL, LIB_INVARG); | |
2578 | #endif | |
2579 | return -1; | |
2580 | } | |
0723351e NC |
2581 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2582 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2583 | return -1; |
c2fcde81 JH |
2584 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2585 | return 0; | |
2586 | } | |
2587 | ||
9e353e3b | 2588 | PerlIO * |
14a5cf38 JH |
2589 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2590 | IV n, const char *mode, int fd, int imode, | |
2591 | int perm, PerlIO *f, int narg, SV **args) | |
2592 | { | |
d9dac8cd | 2593 | if (PerlIOValid(f)) { |
14a5cf38 | 2594 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2595 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2596 | } |
2597 | if (narg > 0) { | |
3b6c1aba | 2598 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2599 | mode++; |
2600 | else { | |
2601 | imode = PerlIOUnix_oflags(mode); | |
2602 | perm = 0666; | |
2603 | } | |
2604 | if (imode != -1) { | |
e62f0680 | 2605 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2606 | fd = PerlLIO_open3(path, imode, perm); |
2607 | } | |
2608 | } | |
2609 | if (fd >= 0) { | |
3b6c1aba | 2610 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2611 | mode++; |
2612 | if (!f) { | |
2613 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2614 | } |
2615 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2616 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2617 | return NULL; | |
2618 | } | |
d9dac8cd | 2619 | } |
aa063c35 | 2620 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2621 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2622 | if (*mode == IoTYPE_APPEND) |
2623 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2624 | return f; |
2625 | } | |
2626 | else { | |
2627 | if (f) { | |
6f207bd3 | 2628 | NOOP; |
14a5cf38 | 2629 | /* |
71200d45 | 2630 | * FIXME: pop layers ??? |
14a5cf38 JH |
2631 | */ |
2632 | } | |
2633 | return NULL; | |
2634 | } | |
9e353e3b NIS |
2635 | } |
2636 | ||
71200d45 | 2637 | PerlIO * |
ecdeb87c | 2638 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2639 | { |
dcda55fc | 2640 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2641 | int fd = os->fd; |
ecdeb87c NIS |
2642 | if (flags & PERLIO_DUP_FD) { |
2643 | fd = PerlLIO_dup(fd); | |
2644 | } | |
22c96fc1 | 2645 | if (fd >= 0) { |
ecdeb87c | 2646 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2647 | if (f) { |
2648 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2649 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2650 | return f; |
2651 | } | |
71200d45 NIS |
2652 | } |
2653 | return NULL; | |
2654 | } | |
2655 | ||
2656 | ||
9e353e3b | 2657 | SSize_t |
f62ce20a | 2658 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2659 | { |
97aff369 | 2660 | dVAR; |
de009b76 | 2661 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2662 | #ifdef PERLIO_STD_SPECIAL |
2663 | if (fd == 0) | |
2664 | return PERLIO_STD_IN(fd, vbuf, count); | |
2665 | #endif | |
81428673 | 2666 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2667 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2668 | return 0; |
1fd8f4ce | 2669 | } |
14a5cf38 | 2670 | while (1) { |
b464bac0 | 2671 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2672 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2673 | if (len < 0) { |
2674 | if (errno != EAGAIN) { | |
2675 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2676 | } | |
2677 | } | |
2678 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2679 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2680 | SETERRNO(0,0); |
2681 | } | |
14a5cf38 JH |
2682 | return len; |
2683 | } | |
2684 | PERL_ASYNC_CHECK(); | |
2685 | } | |
b464bac0 | 2686 | /*NOTREACHED*/ |
9e353e3b NIS |
2687 | } |
2688 | ||
2689 | SSize_t | |
f62ce20a | 2690 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2691 | { |
97aff369 | 2692 | dVAR; |
de009b76 | 2693 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2694 | #ifdef PERLIO_STD_SPECIAL |
2695 | if (fd == 1 || fd == 2) | |
2696 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2697 | #endif | |
14a5cf38 | 2698 | while (1) { |
de009b76 | 2699 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2700 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2701 | if (len < 0) { |
2702 | if (errno != EAGAIN) { | |
2703 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2704 | } | |
2705 | } | |
14a5cf38 JH |
2706 | return len; |
2707 | } | |
2708 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2709 | } |
1b6737cc | 2710 | /*NOTREACHED*/ |
9e353e3b NIS |
2711 | } |
2712 | ||
9e353e3b | 2713 | Off_t |
f62ce20a | 2714 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2715 | { |
96a5add6 AL |
2716 | PERL_UNUSED_CONTEXT; |
2717 | ||
14a5cf38 | 2718 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2719 | } |
2720 | ||
2556f95e GF |
2721 | |
2722 | IV | |
2376d97d | 2723 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2724 | { |
97aff369 | 2725 | dVAR; |
de009b76 | 2726 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2727 | int code = 0; |
168d5872 NIS |
2728 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2729 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2730 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2731 | return 0; | |
22569500 | 2732 | } |
93a8090d NIS |
2733 | } |
2734 | else { | |
93189314 | 2735 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2736 | return -1; |
2737 | } | |
14a5cf38 JH |
2738 | while (PerlLIO_close(fd) != 0) { |
2739 | if (errno != EINTR) { | |
2740 | code = -1; | |
2741 | break; | |
2742 | } | |
2743 | PERL_ASYNC_CHECK(); | |
2744 | } | |
2745 | if (code == 0) { | |
2746 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2747 | } | |
2748 | return code; | |
9e353e3b NIS |
2749 | } |
2750 | ||
27da23d5 | 2751 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2752 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2753 | "unix", |
2754 | sizeof(PerlIOUnix), | |
2755 | PERLIO_K_RAW, | |
2756 | PerlIOUnix_pushed, | |
2376d97d | 2757 | PerlIOBase_popped, |
14a5cf38 | 2758 | PerlIOUnix_open, |
86e05cf2 | 2759 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2760 | NULL, |
2761 | PerlIOUnix_fileno, | |
71200d45 | 2762 | PerlIOUnix_dup, |
14a5cf38 JH |
2763 | PerlIOUnix_read, |
2764 | PerlIOBase_unread, | |
2765 | PerlIOUnix_write, | |
2766 | PerlIOUnix_seek, | |
2767 | PerlIOUnix_tell, | |
2768 | PerlIOUnix_close, | |
22569500 NIS |
2769 | PerlIOBase_noop_ok, /* flush */ |
2770 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2771 | PerlIOBase_eof, |
2772 | PerlIOBase_error, | |
2773 | PerlIOBase_clearerr, | |
2774 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2775 | NULL, /* get_base */ |
2776 | NULL, /* get_bufsiz */ | |
2777 | NULL, /* get_ptr */ | |
2778 | NULL, /* get_cnt */ | |
2779 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2780 | }; |
2781 | ||
2782 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2783 | /* |
71200d45 | 2784 | * stdio as a layer |
14a5cf38 | 2785 | */ |
9e353e3b | 2786 | |
313e59c8 NIS |
2787 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2788 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2789 | broken by the last second glibc 2.3 fix | |
2790 | */ | |
2791 | #define STDIO_BUFFER_WRITABLE | |
2792 | #endif | |
2793 | ||
2794 | ||
14a5cf38 JH |
2795 | typedef struct { |
2796 | struct _PerlIO base; | |
22569500 | 2797 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2798 | } PerlIOStdio; |
2799 | ||
2800 | IV | |
f62ce20a | 2801 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2802 | { |
96a5add6 AL |
2803 | PERL_UNUSED_CONTEXT; |
2804 | ||
c4420975 AL |
2805 | if (PerlIOValid(f)) { |
2806 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2807 | if (s) | |
2808 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2809 | } |
2810 | errno = EBADF; | |
2811 | return -1; | |
9e353e3b NIS |
2812 | } |
2813 | ||
766a733e | 2814 | char * |
14a5cf38 JH |
2815 | PerlIOStdio_mode(const char *mode, char *tmode) |
2816 | { | |
de009b76 | 2817 | char * const ret = tmode; |
a0625d38 SR |
2818 | if (mode) { |
2819 | while (*mode) { | |
2820 | *tmode++ = *mode++; | |
2821 | } | |
14a5cf38 | 2822 | } |
95005ad8 | 2823 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2824 | *tmode++ = 'b'; |
2825 | #endif | |
14a5cf38 JH |
2826 | *tmode = '\0'; |
2827 | return ret; | |
2828 | } | |
2829 | ||
4b803d04 | 2830 | IV |
2dc2558e | 2831 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2832 | { |
1fd8f4ce NIS |
2833 | PerlIO *n; |
2834 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2835 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2836 | if (toptab == tab) { |
2837 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2838 | PerlIO_pop(aTHX_ f); | |
2839 | return 0; | |
2840 | } else { | |
de009b76 | 2841 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2842 | char tmode[8]; |
2843 | FILE *stdio; | |
81428673 | 2844 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2845 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2846 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2847 | /* We never call down so do any pending stuff now */ | |
2848 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2849 | } |
1fd8f4ce NIS |
2850 | else { |
2851 | return -1; | |
2852 | } | |
2853 | } | |
14a5cf38 | 2854 | } |
2dc2558e | 2855 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2856 | } |
2857 | ||
22569500 | 2858 | |
9e353e3b | 2859 | PerlIO * |
4b069b44 | 2860 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2861 | { |
14a5cf38 JH |
2862 | dTHX; |
2863 | PerlIO *f = NULL; | |
2864 | if (stdio) { | |
22569500 | 2865 | PerlIOStdio *s; |
4b069b44 NIS |
2866 | if (!mode || !*mode) { |
2867 | /* We need to probe to see how we can open the stream | |
2868 | so start with read/write and then try write and read | |
2869 | we dup() so that we can fclose without loosing the fd. | |
2870 | ||
2871 | Note that the errno value set by a failing fdopen | |
2872 | varies between stdio implementations. | |
2873 | */ | |
de009b76 | 2874 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2875 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2876 | if (!f2) { |
a33cf58c | 2877 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2878 | } |
2879 | if (!f2) { | |
a33cf58c | 2880 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2881 | } |
2882 | if (!f2) { | |
2883 | /* Don't seem to be able to open */ | |
2884 | PerlLIO_close(fd); | |
2885 | return f; | |
2886 | } | |
2887 | fclose(f2); | |
22569500 | 2888 | } |
a0714e2c | 2889 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2890 | s = PerlIOSelf(f, PerlIOStdio); |
2891 | s->stdio = stdio; | |
c586124f | 2892 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2893 | } |
14a5cf38 JH |
2894 | } |
2895 | return f; | |
9e353e3b NIS |
2896 | } |
2897 | ||
2898 | PerlIO * | |
14a5cf38 JH |
2899 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2900 | IV n, const char *mode, int fd, int imode, | |
2901 | int perm, PerlIO *f, int narg, SV **args) | |
2902 | { | |
2903 | char tmode[8]; | |
d9dac8cd | 2904 | if (PerlIOValid(f)) { |
dcda55fc AL |
2905 | const char * const path = SvPV_nolen_const(*args); |
2906 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2907 | FILE *stdio; |
2908 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2909 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2910 | s->stdio); |
2911 | if (!s->stdio) | |
2912 | return NULL; | |
2913 | s->stdio = stdio; | |
1751d015 | 2914 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2915 | return f; |
2916 | } | |
2917 | else { | |
2918 | if (narg > 0) { | |
dcda55fc | 2919 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2920 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2921 | mode++; |
2922 | fd = PerlLIO_open3(path, imode, perm); | |
2923 | } | |
2924 | else { | |
95005ad8 GH |
2925 | FILE *stdio; |
2926 | bool appended = FALSE; | |
2927 | #ifdef __CYGWIN__ | |
2928 | /* Cygwin wants its 'b' early. */ | |
2929 | appended = TRUE; | |
2930 | mode = PerlIOStdio_mode(mode, tmode); | |
2931 | #endif | |
2932 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2933 | if (stdio) { |
6f0313ac JH |
2934 | if (!f) { |
2935 | f = PerlIO_allocate(aTHX); | |
2936 | } | |
95005ad8 GH |
2937 | if (!appended) |
2938 | mode = PerlIOStdio_mode(mode, tmode); | |
2939 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2940 | if (f) { | |
0f0f9e2b JH |
2941 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2942 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
2943 | } else { | |
2944 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
2945 | } |
2946 | return f; | |
2947 | } | |
2948 | else { | |
2949 | return NULL; | |
2950 | } | |
14a5cf38 JH |
2951 | } |
2952 | } | |
2953 | if (fd >= 0) { | |
2954 | FILE *stdio = NULL; | |
2955 | int init = 0; | |
3b6c1aba | 2956 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2957 | init = 1; |
2958 | mode++; | |
2959 | } | |
2960 | if (init) { | |
2961 | switch (fd) { | |
2962 | case 0: | |
2963 | stdio = PerlSIO_stdin; | |
2964 | break; | |
2965 | case 1: | |
2966 | stdio = PerlSIO_stdout; | |
2967 | break; | |
2968 | case 2: | |
2969 | stdio = PerlSIO_stderr; | |
2970 | break; | |
2971 | } | |
2972 | } | |
2973 | else { | |
2974 | stdio = PerlSIO_fdopen(fd, mode = | |
2975 | PerlIOStdio_mode(mode, tmode)); | |
2976 | } | |
2977 | if (stdio) { | |
d9dac8cd NIS |
2978 | if (!f) { |
2979 | f = PerlIO_allocate(aTHX); | |
2980 | } | |
a33cf58c | 2981 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
2982 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2983 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 2984 | } |
14a5cf38 JH |
2985 | return f; |
2986 | } | |
2987 | } | |
2988 | } | |
ee518936 | 2989 | return NULL; |
9e353e3b NIS |
2990 | } |
2991 | ||
1751d015 | 2992 | PerlIO * |
ecdeb87c | 2993 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
2994 | { |
2995 | /* This assumes no layers underneath - which is what | |
2996 | happens, but is not how I remember it. NI-S 2001/10/16 | |
2997 | */ | |
ecdeb87c | 2998 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 2999 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3000 | const int fd = fileno(stdio); |
9217ff3f | 3001 | char mode[8]; |
ecdeb87c | 3002 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3003 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3004 | if (dfd >= 0) { |
3005 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3006 | goto set_this; | |
ecdeb87c NIS |
3007 | } |
3008 | else { | |
6f207bd3 | 3009 | NOOP; |
ecdeb87c NIS |
3010 | /* FIXME: To avoid messy error recovery if dup fails |
3011 | re-use the existing stdio as though flag was not set | |
3012 | */ | |
3013 | } | |
3014 | } | |
9217ff3f NIS |
3015 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3016 | set_this: | |
694c95cf | 3017 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3018 | if(stdio) { |
3019 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3020 | } | |
1751d015 NIS |
3021 | } |
3022 | return f; | |
3023 | } | |
3024 | ||
0d7a5398 NIS |
3025 | static int |
3026 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3027 | { | |
96a5add6 AL |
3028 | PERL_UNUSED_CONTEXT; |
3029 | ||
0d7a5398 | 3030 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3031 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3032 | */ |
ef8eacb8 AT |
3033 | # if defined(__UCLIBC__) |
3034 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3035 | f->__filedes = -1; | |
3036 | return 1; | |
3037 | # elif defined(__GLIBC__) | |
0d7a5398 | 3038 | /* There may be a better way for GLIBC: |
37725cdc | 3039 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3040 | */ |
3041 | f->_fileno = -1; | |
3042 | return 1; | |
3043 | # elif defined(__sun__) | |
f5992bc4 | 3044 | PERL_UNUSED_ARG(f); |
cfedb851 | 3045 | return 0; |
0d7a5398 NIS |
3046 | # elif defined(__hpux) |
3047 | f->__fileH = 0xff; | |
3048 | f->__fileL = 0xff; | |
3049 | return 1; | |
9837d373 | 3050 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3051 | your platform does not have special entry try this one. |
9837d373 NIS |
3052 | [For OSF only have confirmation for Tru64 (alpha) |
3053 | but assume other OSFs will be similar.] | |
37725cdc | 3054 | */ |
9837d373 | 3055 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3056 | f->_file = -1; |
3057 | return 1; | |
3058 | # elif defined(__FreeBSD__) | |
3059 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3060 | - we could insert a dummy func in the _close function entry |
3061 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3062 | */ |
3063 | f->_file = -1; | |
0c49ea6a SU |
3064 | return 1; |
3065 | # elif defined(__OpenBSD__) | |
3066 | /* There may be a better way on OpenBSD: | |
3067 | - we could insert a dummy func in the _close function entry | |
3068 | f->_close = (int (*)(void *)) dummy_close; | |
3069 | */ | |
3070 | f->_file = -1; | |
0d7a5398 | 3071 | return 1; |
59ad941d IZ |
3072 | # elif defined(__EMX__) |
3073 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3074 | f->_handle = -1; | |
3075 | return 1; | |
0d7a5398 NIS |
3076 | # elif defined(__CYGWIN__) |
3077 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3078 | - we could insert a dummy func in the _close function entry |
3079 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3080 | */ |
3081 | f->_file = -1; | |
3082 | return 1; | |
3083 | # elif defined(WIN32) | |
3084 | # if defined(__BORLANDC__) | |
3085 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3086 | # elif defined(UNDER_CE) |
3087 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3088 | structure at all | |
3089 | */ | |
0d7a5398 NIS |
3090 | # else |
3091 | f->_file = -1; | |
3092 | # endif | |
3093 | return 1; | |
3094 | # else | |
3095 | #if 0 | |
37725cdc | 3096 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3097 | (which isn't thread safe) instead |
37725cdc | 3098 | */ |
0d7a5398 NIS |
3099 | # error "Don't know how to set FILE.fileno on your platform" |
3100 | #endif | |
8772537c | 3101 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3102 | return 0; |
3103 | # endif | |
3104 | } | |
3105 | ||
1751d015 | 3106 | IV |
f62ce20a | 3107 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3108 | { |
c4420975 | 3109 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3110 | if (!stdio) { |
3111 | errno = EBADF; | |
3112 | return -1; | |
3113 | } | |
9217ff3f | 3114 | else { |
de009b76 | 3115 | const int fd = fileno(stdio); |
0d7a5398 | 3116 | int invalidate = 0; |
bbfd922f | 3117 | IV result = 0; |
1d791a44 | 3118 | int dupfd = -1; |
4ee39169 | 3119 | dSAVEDERRNO; |
a2e578da MHM |
3120 | #ifdef USE_ITHREADS |
3121 | dVAR; | |
3122 | #endif | |
0d7a5398 | 3123 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3124 | /* Socks lib overrides close() but stdio isn't linked to |
3125 | that library (though we are) - so we must call close() | |
3126 | on sockets on stdio's behalf. | |
3127 | */ | |
0d7a5398 NIS |
3128 | int optval; |
3129 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3130 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3131 | invalidate = 1; |
0d7a5398 | 3132 | #endif |
d8723f43 NC |
3133 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3134 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3135 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3136 | trying to close an already closed handle which somehow it still has | |
3137 | a reference to. (via.xs, I'm looking at you). */ | |
3138 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3139 | /* File descriptor still in use */ | |
0d7a5398 | 3140 | invalidate = 1; |
d8723f43 | 3141 | } |
0d7a5398 | 3142 | if (invalidate) { |
6b4ce6c8 AL |
3143 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3144 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3145 | return 0; | |
3146 | if (stdio == stdout || stdio == stderr) | |
3147 | return PerlIO_flush(f); | |
37725cdc NIS |
3148 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3149 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3150 | fileno slot of the FILE * | |
3151 | */ | |
bbfd922f | 3152 | result = PerlIO_flush(f); |
4ee39169 | 3153 | SAVE_ERRNO; |
6b4ce6c8 | 3154 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3155 | if (!invalidate) { |
9bab90c0 NC |
3156 | #ifdef USE_ITHREADS |
3157 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3158 | /* Right. We need a mutex here because for a brief while we |
3159 | will have the situation that fd is actually closed. Hence if | |
3160 | a second thread were to get into this block, its dup() would | |
3161 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3162 | Then if we get to the dup2() first, we blat the fd back |
3163 | (messing up its temporary as a side effect) only for it to | |
3164 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3165 | ||
3166 | /* There is, of course, a race condition, that any other thread | |
3167 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3168 | for the duration of this little manoeuvrer. Perhaps we |
3169 | should hold an IO mutex for the duration of every IO | |
3170 | operation if we know that invalidate doesn't work on this | |
3171 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3172 | |
3173 | Except that correctness trumps speed. | |
3174 | Advice from klortho #11912. */ | |
3175 | #endif | |
6b4ce6c8 | 3176 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3177 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3178 | if (dupfd < 0) { |
3179 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3180 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3181 | recover from here, or if closing this particular FILE * | |
3182 | is a good idea now. */ | |
3183 | } | |
3184 | #endif | |
3185 | } | |
94ccb807 JH |
3186 | } else { |
3187 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3188 | } |
0d7a5398 | 3189 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3190 | /* We treat error from stdio as success if we invalidated |
3191 | errno may NOT be expected EBADF | |
e8529473 NIS |
3192 | */ |
3193 | if (invalidate && result != 0) { | |
4ee39169 | 3194 | RESTORE_ERRNO; |
0d7a5398 | 3195 | result = 0; |
37725cdc | 3196 | } |
6b4ce6c8 AL |
3197 | #ifdef SOCKS5_VERSION_NAME |
3198 | /* in SOCKS' case, let close() determine return value */ | |
3199 | result = close(fd); | |
3200 | #endif | |
1d791a44 | 3201 | if (dupfd >= 0) { |
0d7a5398 | 3202 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3203 | PerlLIO_close(dupfd); |
711e8db2 | 3204 | #ifdef USE_ITHREADS |
9bab90c0 | 3205 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3206 | #endif |
9217ff3f NIS |
3207 | } |
3208 | return result; | |
37725cdc | 3209 | } |
1751d015 NIS |
3210 | } |
3211 | ||
9e353e3b | 3212 | SSize_t |
f62ce20a | 3213 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3214 | { |
97aff369 | 3215 | dVAR; |
c4420975 | 3216 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3217 | SSize_t got = 0; |
4d948241 NIS |
3218 | for (;;) { |
3219 | if (count == 1) { | |
3220 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3221 | /* | |
3222 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3223 | * stdio does not do that for fread() | |
3224 | */ | |
de009b76 | 3225 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3226 | if (ch != EOF) { |
3227 | *buf = ch; | |
3228 | got = 1; | |
3229 | } | |
14a5cf38 | 3230 | } |
4d948241 NIS |
3231 | else |
3232 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3233 | if (got == 0 && PerlSIO_ferror(s)) |
3234 | got = -1; | |
42a7a32f | 3235 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3236 | break; |
3237 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3238 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3239 | } |
14a5cf38 | 3240 | return got; |
9e353e3b NIS |
3241 | } |
3242 | ||
3243 | SSize_t | |
f62ce20a | 3244 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3245 | { |
14a5cf38 | 3246 | SSize_t unread = 0; |
c4420975 | 3247 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3248 | |
313e59c8 | 3249 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3250 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3251 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3252 | STDCHAR *base = PerlIO_get_base(f); | |
3253 | SSize_t cnt = PerlIO_get_cnt(f); | |
3254 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3255 | SSize_t avail = ptr - base; | |
3256 | if (avail > 0) { | |
3257 | if (avail > count) { | |
3258 | avail = count; | |
3259 | } | |
3260 | ptr -= avail; | |
3261 | Move(buf-avail,ptr,avail,STDCHAR); | |
3262 | count -= avail; | |
3263 | unread += avail; | |
3264 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3265 | if (PerlSIO_feof(s) && unread >= 0) |
3266 | PerlSIO_clearerr(s); | |
3267 | } | |
3268 | } | |
313e59c8 NIS |
3269 | else |
3270 | #endif | |
3271 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3272 | /* We can get pointer to buffer but not its base |
3273 | Do ungetc() but check chars are ending up in the | |
3274 | buffer | |
3275 | */ | |
3276 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3277 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3278 | while (count > 0) { | |
de009b76 | 3279 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3280 | if (ungetc(ch,s) != ch) { |
3281 | /* ungetc did not work */ | |
3282 | break; | |
3283 | } | |
3284 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3285 | /* Did not change pointer as expected */ | |
3286 | fgetc(s); /* get char back again */ | |
3287 | break; | |
3288 | } | |
3289 | /* It worked ! */ | |
3290 | count--; | |
3291 | unread++; | |
93679785 NIS |
3292 | } |
3293 | } | |
3294 | ||
3295 | if (count > 0) { | |
3296 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3297 | } |
3298 | return unread; | |
9e353e3b NIS |
3299 | } |
3300 | ||
3301 | SSize_t | |
f62ce20a | 3302 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3303 | { |
97aff369 | 3304 | dVAR; |
4d948241 NIS |
3305 | SSize_t got; |
3306 | for (;;) { | |
3307 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3308 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3309 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3310 | break; |
3311 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3312 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3313 | } |
3314 | return got; | |
9e353e3b NIS |
3315 | } |
3316 | ||
94a175e1 | 3317 | IV |
f62ce20a | 3318 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3319 | { |
c4420975 | 3320 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3321 | PERL_UNUSED_CONTEXT; |
3322 | ||
94a175e1 | 3323 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3324 | } |
3325 | ||
3326 | Off_t | |
f62ce20a | 3327 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3328 | { |
c4420975 | 3329 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3330 | PERL_UNUSED_CONTEXT; |
3331 | ||
94a175e1 | 3332 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3333 | } |
3334 | ||
3335 | IV | |
f62ce20a | 3336 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3337 | { |
c4420975 | 3338 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3339 | PERL_UNUSED_CONTEXT; |
3340 | ||
14a5cf38 JH |
3341 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3342 | return PerlSIO_fflush(stdio); | |
3343 | } | |
3344 | else { | |
6f207bd3 | 3345 | NOOP; |
88b61e10 | 3346 | #if 0 |
14a5cf38 JH |
3347 | /* |
3348 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3349 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3350 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3351 | * layer read-to-read |
14a5cf38 JH |
3352 | */ |
3353 | /* | |
71200d45 | 3354 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3355 | */ |
4ee39169 | 3356 | dSAVE_ERRNO; |
14a5cf38 | 3357 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3358 | RESTORE_ERRNO; |
88b61e10 | 3359 | #endif |
14a5cf38 JH |
3360 | } |
3361 | return 0; | |
9e353e3b NIS |
3362 | } |
3363 | ||
3364 | IV | |
f62ce20a | 3365 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3366 | { |
96a5add6 AL |
3367 | PERL_UNUSED_CONTEXT; |
3368 | ||
14a5cf38 | 3369 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3370 | } |
3371 | ||
3372 | IV | |
f62ce20a | 3373 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3374 | { |
96a5add6 AL |
3375 | PERL_UNUSED_CONTEXT; |
3376 | ||
263df5f1 | 3377 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3378 | } |
3379 | ||
3380 | void | |
f62ce20a | 3381 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3382 | { |
96a5add6 AL |
3383 | PERL_UNUSED_CONTEXT; |
3384 | ||
14a5cf38 | 3385 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3386 | } |
3387 | ||
3388 | void | |
f62ce20a | 3389 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3390 | { |
96a5add6 AL |
3391 | PERL_UNUSED_CONTEXT; |
3392 | ||
9e353e3b | 3393 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3394 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3395 | #else |
bd61b366 | 3396 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3397 | #endif |
3398 | } | |
3399 | ||
3400 | #ifdef FILE_base | |
3401 | STDCHAR * | |
f62ce20a | 3402 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3403 | { |
c4420975 | 3404 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3405 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3406 | } |
3407 | ||
3408 | Size_t | |
f62ce20a | 3409 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3410 | { |
c4420975 | 3411 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3412 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3413 | } |
3414 | #endif | |
3415 | ||
3416 | #ifdef USE_STDIO_PTR | |
3417 | STDCHAR * | |
f62ce20a | 3418 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3419 | { |
c4420975 | 3420 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3421 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3422 | } |
3423 | ||
3424 | SSize_t | |
f62ce20a | 3425 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3426 | { |
c4420975 | 3427 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3428 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3429 | } |
3430 | ||
3431 | void | |
f62ce20a | 3432 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3433 | { |
c4420975 | 3434 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3435 | if (ptr != NULL) { |
9e353e3b | 3436 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3437 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3438 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3439 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3440 | #endif |
3441 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3442 | /* |
71200d45 | 3443 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3444 | */ |
3445 | return; | |
9e353e3b | 3446 | #endif |
22569500 | 3447 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3448 | PerlProc_abort(); |
22569500 | 3449 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3450 | } |
3451 | /* | |
71200d45 | 3452 | * Now (or only) set cnt |
14a5cf38 | 3453 | */ |
9e353e3b | 3454 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3455 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3456 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3457 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3458 | PerlSIO_set_ptr(stdio, |
3459 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3460 | cnt)); | |
22569500 | 3461 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3462 | PerlProc_abort(); |
22569500 NIS |
3463 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3464 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3465 | } |
3466 | ||
93679785 | 3467 | |
9e353e3b NIS |
3468 | #endif |
3469 | ||
93679785 NIS |
3470 | IV |
3471 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3472 | { | |
c4420975 | 3473 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3474 | int c; |
96a5add6 AL |
3475 | PERL_UNUSED_CONTEXT; |
3476 | ||
93679785 NIS |
3477 | /* |
3478 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3479 | */ | |
3480 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3481 | if (PerlSIO_fflush(stdio) != 0) | |
3482 | return EOF; | |
3483 | } | |
f3be3723 BL |
3484 | for (;;) { |
3485 | c = PerlSIO_fgetc(stdio); | |
3486 | if (c != EOF) | |
3487 | break; | |
3488 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3489 | return EOF; | |
3490 | PERL_ASYNC_CHECK(); | |
3491 | SETERRNO(0,0); | |
3492 | } | |
93679785 NIS |
3493 | |
3494 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3495 | |
3496 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3497 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3498 | /* Fake ungetc() to the real buffer in case system's ungetc |
3499 | goes elsewhere | |
3500 | */ | |
3501 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3502 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3503 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3504 | if (ptr == base+1) { | |
3505 | *--ptr = (STDCHAR) c; | |
3506 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3507 | if (PerlSIO_feof(stdio)) | |
3508 | PerlSIO_clearerr(stdio); | |
3509 | return 0; | |
3510 | } | |
3511 | } | |
313e59c8 NIS |
3512 | else |
3513 | #endif | |
3514 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3515 | STDCHAR ch = c; |
3516 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3517 | return 0; | |
3518 | } | |
3519 | } | |
93679785 NIS |
3520 | #endif |
3521 | ||
3522 | #if defined(VMS) | |
3523 | /* An ungetc()d char is handled separately from the regular | |
3524 | * buffer, so we stuff it in the buffer ourselves. | |
3525 | * Should never get called as should hit code above | |
3526 | */ | |
bad9695d NIS |
3527 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3528 | (*stdio)->_cnt++; | |
93679785 NIS |
3529 | #else |
3530 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3531 | using ungetc(). |
93679785 NIS |
3532 | */ |
3533 | if (PerlSIO_ungetc(c, stdio) != c) | |
3534 | return EOF; | |
3535 | #endif | |
3536 | return 0; | |
3537 | } | |
3538 | ||
3539 | ||
3540 | ||
27da23d5 | 3541 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3542 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3543 | "stdio", |
3544 | sizeof(PerlIOStdio), | |
86e05cf2 | 3545 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3546 | PerlIOStdio_pushed, |
2376d97d | 3547 | PerlIOBase_popped, |
14a5cf38 | 3548 | PerlIOStdio_open, |
86e05cf2 | 3549 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3550 | NULL, |
3551 | PerlIOStdio_fileno, | |
71200d45 | 3552 | PerlIOStdio_dup, |
14a5cf38 JH |
3553 | PerlIOStdio_read, |
3554 | PerlIOStdio_unread, | |
3555 | PerlIOStdio_write, | |
3556 | PerlIOStdio_seek, | |
3557 | PerlIOStdio_tell, | |
3558 | PerlIOStdio_close, | |
3559 | PerlIOStdio_flush, | |
3560 | PerlIOStdio_fill, | |
3561 | PerlIOStdio_eof, | |
3562 | PerlIOStdio_error, | |
3563 | PerlIOStdio_clearerr, | |
3564 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3565 | #ifdef FILE_base |
14a5cf38 JH |
3566 | PerlIOStdio_get_base, |
3567 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3568 | #else |
14a5cf38 JH |
3569 | NULL, |
3570 | NULL, | |
9e353e3b NIS |
3571 | #endif |
3572 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3573 | PerlIOStdio_get_ptr, |
3574 | PerlIOStdio_get_cnt, | |
15b61c98 | 3575 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3576 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3577 | # else |
3578 | NULL, | |
3579 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3580 | #else | |
3581 | NULL, | |
14a5cf38 JH |
3582 | NULL, |
3583 | NULL, | |
15b61c98 | 3584 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3585 | }; |
3586 | ||
b9d6bf13 JH |
3587 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3588 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3589 | FILE * |
81428673 | 3590 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3591 | { |
e87a358a | 3592 | dTHX; |
81428673 NIS |
3593 | FILE *stdio = NULL; |
3594 | if (PerlIOValid(f)) { | |
3595 | char buf[8]; | |
3596 | PerlIO_flush(f); | |
3597 | if (!mode || !*mode) { | |
3598 | mode = PerlIO_modestr(f, buf); | |
3599 | } | |
3600 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3601 | if (stdio) { | |
3602 | PerlIOl *l = *f; | |
9f75cc58 | 3603 | PerlIO *f2; |
81428673 NIS |
3604 | /* De-link any lower layers so new :stdio sticks */ |
3605 | *f = NULL; | |
a0714e2c | 3606 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3607 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3608 | s->stdio = stdio; |
6b54a403 | 3609 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3610 | /* Link previous lower layers under new one */ |
3611 | *PerlIONext(f) = l; | |
3612 | } | |
3613 | else { | |
3614 | /* restore layers list */ | |
3615 | *f = l; | |
3616 | } | |
a33cf58c | 3617 | } |
14a5cf38 JH |
3618 | } |
3619 | return stdio; | |
9e353e3b NIS |
3620 | } |
3621 | ||
81428673 | 3622 | |
9e353e3b NIS |
3623 | FILE * |
3624 | PerlIO_findFILE(PerlIO *f) | |
3625 | { | |
14a5cf38 | 3626 | PerlIOl *l = *f; |
bbbc33d0 | 3627 | FILE *stdio; |
14a5cf38 JH |
3628 | while (l) { |
3629 | if (l->tab == &PerlIO_stdio) { | |
3630 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3631 | return s->stdio; | |
3632 | } | |
3633 | l = *PerlIONext(&l); | |
f7e7eb72 | 3634 | } |
4b069b44 | 3635 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3636 | /* However, we're not really exporting a FILE * to someone else (who |
3637 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
3638 | So we need to undo its refernce count increase on the underlying file | |
3639 | descriptor. We have to do this, because if the loop above returns you | |
3640 | the FILE *, then *it* didn't increase any reference count. So there's | |
3641 | only one way to be consistent. */ | |
3642 | stdio = PerlIO_exportFILE(f, NULL); | |
3643 | if (stdio) { | |
3644 | const int fd = fileno(stdio); | |
3645 | if (fd >= 0) | |
3646 | PerlIOUnix_refcnt_dec(fd); | |
3647 | } | |
3648 | return stdio; | |
9e353e3b NIS |
3649 | } |
3650 | ||
b9d6bf13 | 3651 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3652 | void |
3653 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3654 | { | |
27da23d5 | 3655 | dVAR; |
22569500 NIS |
3656 | PerlIOl *l; |
3657 | while ((l = *p)) { | |
3658 | if (l->tab == &PerlIO_stdio) { | |
3659 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3660 | if (s->stdio == f) { | |
3661 | dTHX; | |
6b54a403 NC |
3662 | const int fd = fileno(f); |
3663 | if (fd >= 0) | |
3664 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3665 | PerlIO_pop(aTHX_ p); |
3666 | return; | |
3667 | } | |
3668 | } | |
3669 | p = PerlIONext(p); | |
3670 | } | |
3671 | return; | |
9e353e3b NIS |
3672 | } |
3673 | ||
3674 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3675 | /* |
71200d45 | 3676 | * perlio buffer layer |
14a5cf38 | 3677 | */ |
9e353e3b | 3678 | |
5e2ab84b | 3679 | IV |
2dc2558e | 3680 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3681 | { |
14a5cf38 | 3682 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3683 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3684 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3685 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3686 | } | |
4b069b44 | 3687 | if (*PerlIONext(f)) { |
de009b76 | 3688 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3689 | if (posn != (Off_t) - 1) { |
3690 | b->posn = posn; | |
3691 | } | |
14a5cf38 | 3692 | } |
2dc2558e | 3693 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3694 | } |
3695 | ||
9e353e3b | 3696 | PerlIO * |
14a5cf38 JH |
3697 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3698 | IV n, const char *mode, int fd, int imode, int perm, | |
3699 | PerlIO *f, int narg, SV **args) | |
3700 | { | |
04892f78 | 3701 | if (PerlIOValid(f)) { |
14a5cf38 | 3702 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3703 | PerlIO_funcs *tab = |
3704 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3705 | if (tab && tab->Open) | |
3706 | next = | |
3707 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3708 | next, narg, args); | |
2dc2558e | 3709 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3710 | return NULL; |
3711 | } | |
3712 | } | |
3713 | else { | |
04892f78 | 3714 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3715 | int init = 0; |
3b6c1aba | 3716 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3717 | init = 1; |
3718 | /* | |
71200d45 | 3719 | * mode++; |
14a5cf38 JH |
3720 | */ |
3721 | } | |
67363c0d JH |
3722 | if (tab && tab->Open) |
3723 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3724 | f, narg, args); | |
3725 | else | |
3726 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3727 | if (f) { |
22569500 | 3728 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3729 | /* |
3730 | * if push fails during open, open fails. close will pop us. | |
3731 | */ | |
3732 | PerlIO_close (f); | |
3733 | return NULL; | |
3734 | } else { | |
3735 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3736 | if (init && fd == 2) { |
3737 | /* | |
3738 | * Initial stderr is unbuffered | |
3739 | */ | |
3740 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3741 | } | |
23b84778 IZ |
3742 | #ifdef PERLIO_USING_CRLF |
3743 | # ifdef PERLIO_IS_BINMODE_FD | |
3744 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3745 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3746 | else |
3747 | # endif | |
3748 | /* | |
3749 | * do something about failing setmode()? --jhi | |
3750 | */ | |
3751 | PerlLIO_setmode(fd, O_BINARY); | |
3752 | #endif | |
14a5cf38 JH |
3753 | } |
3754 | } | |
ee518936 | 3755 | } |
14a5cf38 | 3756 | return f; |
9e353e3b NIS |
3757 | } |
3758 | ||
14a5cf38 JH |
3759 | /* |
3760 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3761 | * read or write state. For write state, we put the postponed data through |
3762 | * the next layers. For read state, we seek() the next layers to the | |
3763 | * offset given by current position in the buffer, and discard the buffer | |
3764 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3765 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3766 | */ |
9e353e3b | 3767 | IV |
f62ce20a | 3768 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3769 | { |
dcda55fc | 3770 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3771 | int code = 0; |
04892f78 | 3772 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3773 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3774 | /* | |
71200d45 | 3775 | * write() the buffer |
14a5cf38 | 3776 | */ |
de009b76 AL |
3777 | const STDCHAR *buf = b->buf; |
3778 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3779 | while (p < b->ptr) { |
3780 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3781 | if (count > 0) { | |
3782 | p += count; | |
3783 | } | |
3784 | else if (count < 0 || PerlIO_error(n)) { | |
3785 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3786 | code = -1; | |
3787 | break; | |
3788 | } | |
3789 | } | |
3790 | b->posn += (p - buf); | |
3791 | } | |
3792 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3793 | STDCHAR *buf = PerlIO_get_base(f); | |
3794 | /* | |
71200d45 | 3795 | * Note position change |
14a5cf38 JH |
3796 | */ |
3797 | b->posn += (b->ptr - buf); | |
3798 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3799 | /* We did not consume all of it - try and seek downstream to |
3800 | our logical position | |
14a5cf38 | 3801 | */ |
4b069b44 | 3802 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3803 | /* Reload n as some layers may pop themselves on seek */ |
3804 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3805 | } |
ba5c3fe9 | 3806 | else { |
4b069b44 NIS |
3807 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3808 | data is lost for good - so return saying "ok" having undone | |
3809 | the position adjust | |
3810 | */ | |
3811 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3812 | return code; |
3813 | } | |
14a5cf38 JH |
3814 | } |
3815 | } | |
3816 | b->ptr = b->end = b->buf; | |
3817 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3818 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3819 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3820 | code = -1; |
3821 | return code; | |
6f9d8c32 NIS |
3822 | } |
3823 | ||
93c2c2ec IZ |
3824 | /* This discards the content of the buffer after b->ptr, and rereads |
3825 | * the buffer from the position off in the layer downstream; here off | |
3826 | * is at offset corresponding to b->ptr - b->buf. | |
3827 | */ | |
06da4f11 | 3828 | IV |
f62ce20a | 3829 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3830 | { |
dcda55fc | 3831 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3832 | PerlIO *n = PerlIONext(f); |
3833 | SSize_t avail; | |
3834 | /* | |
4b069b44 NIS |
3835 | * Down-stream flush is defined not to loose read data so is harmless. |
3836 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3837 | */ |
93c2c2ec | 3838 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3839 | return -1; |
3840 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3841 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3842 | |
3843 | if (!b->buf) | |
22569500 | 3844 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3845 | |
0f0eef27 | 3846 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3847 | |
14a5cf38 | 3848 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3849 | |
3850 | if (!PerlIOValid(n)) { | |
3851 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3852 | return -1; | |
3853 | } | |
3854 | ||
14a5cf38 JH |
3855 | if (PerlIO_fast_gets(n)) { |
3856 | /* | |
04892f78 | 3857 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3858 | * ->Read() because that will loop till it gets what we asked for |
3859 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3860 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3861 | */ |
3862 | avail = PerlIO_get_cnt(n); | |
3863 | if (avail <= 0) { | |
3864 | avail = PerlIO_fill(n); | |
3865 | if (avail == 0) | |
3866 | avail = PerlIO_get_cnt(n); | |
3867 | else { | |
3868 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3869 | avail = 0; | |
3870 | } | |
3871 | } | |
3872 | if (avail > 0) { | |
3873 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3874 | const SSize_t cnt = avail; |
eb160463 | 3875 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3876 | avail = b->bufsiz; |
3877 | Copy(ptr, b->buf, avail, STDCHAR); | |
3878 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3879 | } | |
3880 | } | |
3881 | else { | |
3882 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3883 | } | |
3884 | if (avail <= 0) { | |
3885 | if (avail == 0) | |
3886 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3887 | else | |
3888 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3889 | return -1; | |
3890 | } | |
3891 | b->end = b->buf + avail; | |
3892 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3893 | return 0; | |
06da4f11 NIS |
3894 | } |
3895 | ||
6f9d8c32 | 3896 | SSize_t |
f62ce20a | 3897 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3898 | { |
04892f78 | 3899 | if (PerlIOValid(f)) { |
dcda55fc | 3900 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3901 | if (!b->ptr) |
3902 | PerlIO_get_base(f); | |
f62ce20a | 3903 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3904 | } |
3905 | return 0; | |
6f9d8c32 NIS |
3906 | } |
3907 | ||
9e353e3b | 3908 | SSize_t |
f62ce20a | 3909 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3910 | { |
14a5cf38 | 3911 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3912 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3913 | SSize_t unread = 0; |
3914 | SSize_t avail; | |
3915 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3916 | PerlIO_flush(f); | |
3917 | if (!b->buf) | |
3918 | PerlIO_get_base(f); | |
3919 | if (b->buf) { | |
3920 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3921 | /* | |
3922 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3923 | * which have been read back to buffer start |
14a5cf38 JH |
3924 | */ |
3925 | avail = (b->ptr - b->buf); | |
3926 | } | |
3927 | else { | |
3928 | /* | |
3929 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3930 | * unread |
14a5cf38 JH |
3931 | */ |
3932 | avail = b->bufsiz; | |
3933 | b->end = b->buf + avail; | |
3934 | b->ptr = b->end; | |
3935 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3936 | /* | |
71200d45 | 3937 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3938 | */ |
3939 | b->posn -= b->bufsiz; | |
3940 | } | |
3941 | if (avail > (SSize_t) count) { | |
3942 | /* | |
71200d45 | 3943 | * If we have space for more than count, just move count |
14a5cf38 JH |
3944 | */ |
3945 | avail = count; | |
3946 | } | |
3947 | if (avail > 0) { | |
3948 | b->ptr -= avail; | |
3949 | buf -= avail; | |
3950 | /* | |
3951 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3952 | * there |
14a5cf38 JH |
3953 | */ |
3954 | if (buf != b->ptr) { | |
3955 | Copy(buf, b->ptr, avail, STDCHAR); | |
3956 | } | |
3957 | count -= avail; | |
3958 | unread += avail; | |
3959 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3960 | } | |
3961 | } | |
93679785 NIS |
3962 | if (count > 0) { |
3963 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3964 | } | |
14a5cf38 | 3965 | return unread; |
760ac839 LW |
3966 | } |
3967 | ||
9e353e3b | 3968 | SSize_t |
f62ce20a | 3969 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3970 | { |
de009b76 | 3971 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3972 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3973 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3974 | Size_t written = 0; |
3975 | if (!b->buf) | |
3976 | PerlIO_get_base(f); | |
3977 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3978 | return 0; | |
0678cb22 NIS |
3979 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3980 | if (PerlIO_flush(f) != 0) { | |
3981 | return 0; | |
3982 | } | |
3983 | } | |
ee56a6b9 CS |
3984 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
3985 | flushptr = buf + count; | |
3986 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
3987 | --flushptr; | |
3988 | } | |
14a5cf38 JH |
3989 | while (count > 0) { |
3990 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
3991 | if ((SSize_t) count < avail) | |
3992 | avail = count; | |
ee56a6b9 CS |
3993 | if (flushptr > buf && flushptr <= buf + avail) |
3994 | avail = flushptr - buf; | |
14a5cf38 | 3995 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
3996 | if (avail) { |
3997 | Copy(buf, b->ptr, avail, STDCHAR); | |
3998 | count -= avail; | |
3999 | buf += avail; | |
4000 | written += avail; | |
4001 | b->ptr += avail; | |
4002 | if (buf == flushptr) | |
4003 | PerlIO_flush(f); | |
14a5cf38 JH |
4004 | } |
4005 | if (b->ptr >= (b->buf + b->bufsiz)) | |
4006 | PerlIO_flush(f); | |
4007 | } | |
4008 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4009 | PerlIO_flush(f); | |
4010 | return written; | |
9e353e3b NIS |
4011 | } |
4012 | ||
94a175e1 | 4013 | IV |
f62ce20a | 4014 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4015 | { |
14a5cf38 JH |
4016 | IV code; |
4017 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4018 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4019 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4020 | if (code == 0) { | |
de009b76 | 4021 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4022 | b->posn = PerlIO_tell(PerlIONext(f)); |
4023 | } | |
9e353e3b | 4024 | } |
14a5cf38 | 4025 | return code; |
9e353e3b NIS |
4026 | } |
4027 | ||
4028 | Off_t | |
f62ce20a | 4029 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4030 | { |
dcda55fc | 4031 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4032 | /* |
71200d45 | 4033 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4034 | */ |
4035 | Off_t posn = b->posn; | |
37725cdc | 4036 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4037 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4038 | #if 1 | |
4039 | /* As O_APPEND files are normally shared in some sense it is better | |
4040 | to flush : | |
4041 | */ | |
4042 | PerlIO_flush(f); | |
4043 | #else | |
37725cdc | 4044 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4045 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4046 | #endif | |
4047 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4048 | } | |
14a5cf38 JH |
4049 | if (b->buf) { |
4050 | /* | |
71200d45 | 4051 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4052 | */ |
4053 | posn += (b->ptr - b->buf); | |
4054 | } | |
4055 | return posn; | |
9e353e3b NIS |
4056 | } |
4057 | ||
4058 | IV | |
44798d05 NIS |
4059 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4060 | { | |
de009b76 AL |
4061 | const IV code = PerlIOBase_popped(aTHX_ f); |
4062 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4063 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4064 | Safefree(b->buf); | |
4065 | } | |
dcda55fc | 4066 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4067 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4068 | return code; | |
4069 | } | |
4070 | ||
4071 | IV | |
f62ce20a | 4072 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4073 | { |
de009b76 AL |
4074 | const IV code = PerlIOBase_close(aTHX_ f); |
4075 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4076 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4077 | Safefree(b->buf); |
14a5cf38 | 4078 | } |
dcda55fc | 4079 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4080 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4081 | return code; | |
760ac839 LW |
4082 | } |
4083 | ||
9e353e3b | 4084 | STDCHAR * |
f62ce20a | 4085 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4086 | { |
dcda55fc | 4087 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4088 | if (!b->buf) |
4089 | PerlIO_get_base(f); | |
4090 | return b->ptr; | |
9e353e3b NIS |
4091 | } |
4092 | ||
05d1247b | 4093 | SSize_t |
f62ce20a | 4094 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4095 | { |
dcda55fc | 4096 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4097 | if (!b->buf) |
4098 | PerlIO_get_base(f); | |
4099 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4100 | return (b->end - b->ptr); | |
4101 | return 0; | |
9e353e3b NIS |
4102 | } |
4103 | ||
4104 | STDCHAR * | |
f62ce20a | 4105 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4106 | { |
dcda55fc | 4107 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4108 | PERL_UNUSED_CONTEXT; |
4109 | ||
14a5cf38 JH |
4110 | if (!b->buf) { |
4111 | if (!b->bufsiz) | |
4112 | b->bufsiz = 4096; | |
a02a5408 | 4113 | b->buf = Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4114 | if (!b->buf) { |
4115 | b->buf = (STDCHAR *) & b->oneword; | |
4116 | b->bufsiz = sizeof(b->oneword); | |
4117 | } | |
dcda55fc | 4118 | b->end = b->ptr = b->buf; |
06da4f11 | 4119 | } |
14a5cf38 | 4120 | return b->buf; |
9e353e3b NIS |
4121 | } |
4122 | ||
4123 | Size_t | |
f62ce20a | 4124 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4125 | { |
dcda55fc | 4126 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4127 | if (!b->buf) |
4128 | PerlIO_get_base(f); | |
4129 | return (b->end - b->buf); | |
9e353e3b NIS |
4130 | } |
4131 | ||
4132 | void | |
f62ce20a | 4133 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4134 | { |
dcda55fc | 4135 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4136 | #ifndef DEBUGGING |
4137 | PERL_UNUSED_ARG(cnt); | |
4138 | #endif | |
14a5cf38 JH |
4139 | if (!b->buf) |
4140 | PerlIO_get_base(f); | |
4141 | b->ptr = ptr; | |
b727803b RGS |
4142 | assert(PerlIO_get_cnt(f) == cnt); |
4143 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4144 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4145 | } |
4146 | ||
71200d45 | 4147 | PerlIO * |
ecdeb87c | 4148 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4149 | { |
ecdeb87c | 4150 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4151 | } |
4152 | ||
4153 | ||
4154 | ||
27da23d5 | 4155 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4156 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4157 | "perlio", |
4158 | sizeof(PerlIOBuf), | |
86e05cf2 | 4159 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4160 | PerlIOBuf_pushed, |
44798d05 | 4161 | PerlIOBuf_popped, |
14a5cf38 | 4162 | PerlIOBuf_open, |
86e05cf2 | 4163 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4164 | NULL, |
4165 | PerlIOBase_fileno, | |
71200d45 | 4166 | PerlIOBuf_dup, |
14a5cf38 JH |
4167 | PerlIOBuf_read, |
4168 | PerlIOBuf_unread, | |
4169 | PerlIOBuf_write, | |
4170 | PerlIOBuf_seek, | |
4171 | PerlIOBuf_tell, | |
4172 | PerlIOBuf_close, | |
4173 | PerlIOBuf_flush, | |
4174 | PerlIOBuf_fill, | |
4175 | PerlIOBase_eof, | |
4176 | PerlIOBase_error, | |
4177 | PerlIOBase_clearerr, | |
4178 | PerlIOBase_setlinebuf, | |
4179 | PerlIOBuf_get_base, | |
4180 | PerlIOBuf_bufsiz, | |
4181 | PerlIOBuf_get_ptr, | |
4182 | PerlIOBuf_get_cnt, | |
4183 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4184 | }; |
4185 | ||
66ecd56b | 4186 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4187 | /* |
71200d45 | 4188 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4189 | */ |
5e2ab84b NIS |
4190 | |
4191 | IV | |
f62ce20a | 4192 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4193 | { |
14a5cf38 | 4194 | /* |
71200d45 | 4195 | * Should never happen |
14a5cf38 JH |
4196 | */ |
4197 | PerlIO_flush(f); | |
4198 | return 0; | |
5e2ab84b NIS |
4199 | } |
4200 | ||
4201 | IV | |
f62ce20a | 4202 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4203 | { |
14a5cf38 | 4204 | /* |
71200d45 | 4205 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4206 | */ |
4207 | PerlIO_flush(f); | |
4208 | return PerlIO_close(f); | |
5e2ab84b NIS |
4209 | } |
4210 | ||
94a175e1 | 4211 | IV |
f62ce20a | 4212 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4213 | { |
14a5cf38 | 4214 | /* |
71200d45 | 4215 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4216 | */ |
4217 | PerlIO_flush(f); | |
4218 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4219 | } |
4220 | ||
4221 | ||
4222 | IV | |
f62ce20a | 4223 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4224 | { |
dcda55fc | 4225 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4226 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4227 | Safefree(b->buf); |
14a5cf38 JH |
4228 | b->buf = NULL; |
4229 | } | |
4230 | PerlIO_pop(aTHX_ f); | |
4231 | return 0; | |
5e2ab84b NIS |
4232 | } |
4233 | ||
4234 | void | |
f62ce20a | 4235 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4236 | { |
14a5cf38 JH |
4237 | if (cnt <= 0) { |
4238 | PerlIO_flush(f); | |
4239 | } | |
4240 | else { | |
f62ce20a | 4241 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4242 | } |
5e2ab84b NIS |
4243 | } |
4244 | ||
4245 | IV | |
2dc2558e | 4246 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4247 | { |
de009b76 | 4248 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4249 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4250 | /* |
71200d45 NIS |
4251 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4252 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4253 | */ |
4254 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4255 | (PerlIOBase(PerlIONext(f))-> | |
4256 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4257 | return code; | |
5e2ab84b NIS |
4258 | } |
4259 | ||
4260 | SSize_t | |
f62ce20a | 4261 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4262 | { |
14a5cf38 JH |
4263 | SSize_t avail = PerlIO_get_cnt(f); |
4264 | SSize_t got = 0; | |
eb160463 | 4265 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4266 | avail = count; |
4267 | if (avail > 0) | |
f62ce20a | 4268 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4269 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4270 | const SSize_t more = |
14a5cf38 JH |
4271 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4272 | if (more >= 0 || got == 0) | |
4273 | got += more; | |
4274 | } | |
4275 | return got; | |
5e2ab84b NIS |
4276 | } |
4277 | ||
27da23d5 | 4278 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4279 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4280 | "pending", |
4281 | sizeof(PerlIOBuf), | |
86e05cf2 | 4282 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4283 | PerlIOPending_pushed, |
44798d05 | 4284 | PerlIOBuf_popped, |
14a5cf38 | 4285 | NULL, |
86e05cf2 | 4286 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4287 | NULL, |
4288 | PerlIOBase_fileno, | |
71200d45 | 4289 | PerlIOBuf_dup, |
14a5cf38 JH |
4290 | PerlIOPending_read, |
4291 | PerlIOBuf_unread, | |
4292 | PerlIOBuf_write, | |
4293 | PerlIOPending_seek, | |
4294 | PerlIOBuf_tell, | |
4295 | PerlIOPending_close, | |
4296 | PerlIOPending_flush, | |
4297 | PerlIOPending_fill, | |
4298 | PerlIOBase_eof, | |
4299 | PerlIOBase_error, | |
4300 | PerlIOBase_clearerr, | |
4301 | PerlIOBase_setlinebuf, | |
4302 | PerlIOBuf_get_base, | |
4303 | PerlIOBuf_bufsiz, | |
4304 | PerlIOBuf_get_ptr, | |
4305 | PerlIOBuf_get_cnt, | |
4306 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4307 | }; |
4308 | ||
4309 | ||
4310 | ||
4311 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4312 | /* |
4313 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4314 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4315 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4316 | * |
4317 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4318 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4319 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4320 | * that it ends at c->nl; these two cases can be distinguished by | |
4321 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4322 | * _unread() and _flush() calls. | |
4323 | * It only matters for read operations. | |
66ecd56b NIS |
4324 | */ |
4325 | ||
14a5cf38 | 4326 | typedef struct { |
22569500 NIS |
4327 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4328 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4329 | * buffer */ |
99efab12 NIS |
4330 | } PerlIOCrlf; |
4331 | ||
ff1e3883 JD |
4332 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4333 | * Otherwise the :crlf layer would always revert back to | |
4334 | * raw mode. | |
4335 | */ | |
4336 | static void | |
4337 | S_inherit_utf8_flag(PerlIO *f) | |
4338 | { | |
4339 | PerlIO *g = PerlIONext(f); | |
4340 | if (PerlIOValid(g)) { | |
4341 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4342 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4343 | } | |
4344 | } | |
4345 | } | |
4346 | ||
f5b9d040 | 4347 | IV |
2dc2558e | 4348 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4349 | { |
14a5cf38 JH |
4350 | IV code; |
4351 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4352 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4353 | #if 0 |
14a5cf38 | 4354 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4355 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4356 | PerlIOBase(f)->flags); |
5e2ab84b | 4357 | #endif |
8229d19f JH |
4358 | { |
4359 | /* Enable the first CRLF capable layer you can find, but if none | |
4360 | * found, the one we just pushed is fine. This results in at | |
4361 | * any given moment at most one CRLF-capable layer being enabled | |
4362 | * in the whole layer stack. */ | |
4363 | PerlIO *g = PerlIONext(f); | |
ff1e3883 | 4364 | while (PerlIOValid(g)) { |
8229d19f JH |
4365 | PerlIOl *b = PerlIOBase(g); |
4366 | if (b && b->tab == &PerlIO_crlf) { | |
4367 | if (!(b->flags & PERLIO_F_CRLF)) | |
4368 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4369 | S_inherit_utf8_flag(g); |
8229d19f JH |
4370 | PerlIO_pop(aTHX_ f); |
4371 | return code; | |
4372 | } | |
4373 | g = PerlIONext(g); | |
4374 | } | |
4375 | } | |
ff1e3883 | 4376 | S_inherit_utf8_flag(f); |
14a5cf38 | 4377 | return code; |
f5b9d040 NIS |
4378 | } |
4379 | ||
4380 | ||
99efab12 | 4381 | SSize_t |
f62ce20a | 4382 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4383 | { |
dcda55fc | 4384 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4385 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4386 | *(c->nl) = 0xd; |
4387 | c->nl = NULL; | |
4388 | } | |
4389 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4390 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4391 | else { |
4392 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4393 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4394 | SSize_t unread = 0; | |
4395 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4396 | PerlIO_flush(f); | |
4397 | if (!b->buf) | |
4398 | PerlIO_get_base(f); | |
4399 | if (b->buf) { | |
4400 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4401 | b->end = b->ptr = b->buf + b->bufsiz; | |
4402 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4403 | b->posn -= b->bufsiz; | |
4404 | } | |
4405 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4406 | const int ch = *--buf; |
14a5cf38 JH |
4407 | if (ch == '\n') { |
4408 | if (b->ptr - 2 >= b->buf) { | |
4409 | *--(b->ptr) = 0xa; | |
4410 | *--(b->ptr) = 0xd; | |
4411 | unread++; | |
4412 | count--; | |
4413 | } | |
4414 | else { | |
93c2c2ec IZ |
4415 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4416 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4417 | unread++; | |
4418 | count--; | |
14a5cf38 JH |
4419 | } |
4420 | } | |
4421 | else { | |
4422 | *--(b->ptr) = ch; | |
4423 | unread++; | |
4424 | count--; | |
4425 | } | |
4426 | } | |
4427 | } | |
4428 | return unread; | |
4429 | } | |
99efab12 NIS |
4430 | } |
4431 | ||
93c2c2ec | 4432 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4433 | SSize_t |
f62ce20a | 4434 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4435 | { |
dcda55fc | 4436 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4437 | if (!b->buf) |
4438 | PerlIO_get_base(f); | |
4439 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4440 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4441 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4442 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4443 | scan: |
4444 | while (nl < b->end && *nl != 0xd) | |
4445 | nl++; | |
4446 | if (nl < b->end && *nl == 0xd) { | |
4447 | test: | |
4448 | if (nl + 1 < b->end) { | |
4449 | if (nl[1] == 0xa) { | |
4450 | *nl = '\n'; | |
4451 | c->nl = nl; | |
4452 | } | |
4453 | else { | |
4454 | /* | |
71200d45 | 4455 | * Not CR,LF but just CR |
14a5cf38 JH |
4456 | */ |
4457 | nl++; | |
4458 | goto scan; | |
4459 | } | |
4460 | } | |
4461 | else { | |
4462 | /* | |
71200d45 | 4463 | * Blast - found CR as last char in buffer |
14a5cf38 | 4464 | */ |
e87a358a | 4465 | |
14a5cf38 JH |
4466 | if (b->ptr < nl) { |
4467 | /* | |
4468 | * They may not care, defer work as long as | |
71200d45 | 4469 | * possible |
14a5cf38 | 4470 | */ |
a0d1d361 | 4471 | c->nl = nl; |
14a5cf38 JH |
4472 | return (nl - b->ptr); |
4473 | } | |
4474 | else { | |
4475 | int code; | |
22569500 | 4476 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4477 | * flush() is concerned */ |
22569500 | 4478 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4479 | /* Note as we have moved buf up flush's |
4480 | posn += ptr-buf | |
4481 | will naturally make posn point at CR | |
4482 | */ | |
22569500 NIS |
4483 | b->bufsiz--; /* Buffer is thus smaller */ |
4484 | code = PerlIO_fill(f); /* Fetch some more */ | |
4485 | b->bufsiz++; /* Restore size for next time */ | |
4486 | b->buf--; /* Point at space */ | |
4487 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4488 | * off */ |
22569500 | 4489 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4490 | if (code == 0) |
22569500 | 4491 | goto test; /* fill() call worked */ |
14a5cf38 | 4492 | /* |
71200d45 | 4493 | * CR at EOF - just fall through |
14a5cf38 | 4494 | */ |
a0d1d361 | 4495 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4496 | } |
4497 | } | |
4498 | } | |
4499 | } | |
4500 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4501 | } | |
4502 | return 0; | |
99efab12 NIS |
4503 | } |
4504 | ||
4505 | void | |
f62ce20a | 4506 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4507 | { |
dcda55fc AL |
4508 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4509 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4510 | if (!b->buf) |
4511 | PerlIO_get_base(f); | |
4512 | if (!ptr) { | |
a0d1d361 | 4513 | if (c->nl) { |
14a5cf38 | 4514 | ptr = c->nl + 1; |
22569500 | 4515 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4516 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4517 | ptr--; |
4518 | } | |
4519 | } | |
14a5cf38 JH |
4520 | else { |
4521 | ptr = b->end; | |
14a5cf38 JH |
4522 | } |
4523 | ptr -= cnt; | |
4524 | } | |
4525 | else { | |
6f207bd3 | 4526 | NOOP; |
3b4bd3fd | 4527 | #if 0 |
14a5cf38 | 4528 | /* |
71200d45 | 4529 | * Test code - delete when it works ... |
14a5cf38 | 4530 | */ |
3b4bd3fd | 4531 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4532 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4533 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4534 | /* Defered CR at end of buffer case - we lied about count */ |
4535 | chk--; | |
22569500 | 4536 | } |
14a5cf38 JH |
4537 | chk -= cnt; |
4538 | ||
a0d1d361 | 4539 | if (ptr != chk ) { |
99ef548b | 4540 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4541 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4542 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4543 | } |
99ef548b | 4544 | #endif |
14a5cf38 JH |
4545 | } |
4546 | if (c->nl) { | |
4547 | if (ptr > c->nl) { | |
4548 | /* | |
71200d45 | 4549 | * They have taken what we lied about |
14a5cf38 JH |
4550 | */ |
4551 | *(c->nl) = 0xd; | |
4552 | c->nl = NULL; | |
4553 | ptr++; | |
4554 | } | |
4555 | } | |
4556 | b->ptr = ptr; | |
4557 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4558 | } |
4559 | ||
4560 | SSize_t | |
f62ce20a | 4561 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4562 | { |
14a5cf38 | 4563 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4564 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4565 | else { |
dcda55fc | 4566 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4567 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4568 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4569 | if (!b->buf) |
4570 | PerlIO_get_base(f); | |
4571 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4572 | return 0; | |
4573 | while (buf < ebuf) { | |
dcda55fc | 4574 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4575 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4576 | while (buf < ebuf && b->ptr < eptr) { | |
4577 | if (*buf == '\n') { | |
4578 | if ((b->ptr + 2) > eptr) { | |
4579 | /* | |
71200d45 | 4580 | * Not room for both |
14a5cf38 JH |
4581 | */ |
4582 | PerlIO_flush(f); | |
4583 | break; | |
4584 | } | |
4585 | else { | |
22569500 NIS |
4586 | *(b->ptr)++ = 0xd; /* CR */ |
4587 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4588 | buf++; |
4589 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4590 | PerlIO_flush(f); | |
4591 | break; | |
4592 | } | |
4593 | } | |
4594 | } | |
4595 | else { | |
dcda55fc | 4596 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4597 | } |
4598 | if (b->ptr >= eptr) { | |
4599 | PerlIO_flush(f); | |
4600 | break; | |
4601 | } | |
4602 | } | |
4603 | } | |
4604 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4605 | PerlIO_flush(f); | |
4606 | return (buf - (STDCHAR *) vbuf); | |
4607 | } | |
99efab12 NIS |
4608 | } |
4609 | ||
4610 | IV | |
f62ce20a | 4611 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4612 | { |
dcda55fc | 4613 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4614 | if (c->nl) { |
4615 | *(c->nl) = 0xd; | |
4616 | c->nl = NULL; | |
4617 | } | |
f62ce20a | 4618 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4619 | } |
4620 | ||
86e05cf2 NIS |
4621 | IV |
4622 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4623 | { | |
4624 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4625 | /* In text mode - flush any pending stuff and flip it */ | |
4626 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4627 | #ifndef PERLIO_USING_CRLF | |
4628 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4629 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4630 | #endif |
4631 | } | |
4632 | return 0; | |
4633 | } | |
4634 | ||
27da23d5 | 4635 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4636 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4637 | "crlf", |
4638 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4639 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4640 | PerlIOCrlf_pushed, |
44798d05 | 4641 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4642 | PerlIOBuf_open, |
86e05cf2 | 4643 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4644 | NULL, |
4645 | PerlIOBase_fileno, | |
71200d45 | 4646 | PerlIOBuf_dup, |
de009b76 | 4647 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4648 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4649 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4650 | PerlIOBuf_seek, |
4651 | PerlIOBuf_tell, | |
4652 | PerlIOBuf_close, | |
4653 | PerlIOCrlf_flush, | |
4654 | PerlIOBuf_fill, | |
4655 | PerlIOBase_eof, | |
4656 | PerlIOBase_error, | |
4657 | PerlIOBase_clearerr, | |
4658 | PerlIOBase_setlinebuf, | |
4659 | PerlIOBuf_get_base, | |
4660 | PerlIOBuf_bufsiz, | |
4661 | PerlIOBuf_get_ptr, | |
4662 | PerlIOCrlf_get_cnt, | |
4663 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4664 | }; |
4665 | ||
06da4f11 NIS |
4666 | #ifdef HAS_MMAP |
4667 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4668 | /* |
71200d45 | 4669 | * mmap as "buffer" layer |
14a5cf38 | 4670 | */ |
06da4f11 | 4671 | |
14a5cf38 | 4672 | typedef struct { |
22569500 NIS |
4673 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4674 | Mmap_t mptr; /* Mapped address */ | |
4675 | Size_t len; /* mapped length */ | |
4676 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4677 | } PerlIOMmap; |
4678 | ||
4679 | IV | |
f62ce20a | 4680 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4681 | { |
27da23d5 | 4682 | dVAR; |
de009b76 AL |
4683 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4684 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4685 | IV code = 0; |
4686 | if (m->len) | |
4687 | abort(); | |
4688 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4689 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4690 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4691 | Stat_t st; |
4692 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4693 | if (code == 0 && S_ISREG(st.st_mode)) { |
4694 | SSize_t len = st.st_size - b->posn; | |
4695 | if (len > 0) { | |
4696 | Off_t posn; | |
27da23d5 JH |
4697 | if (PL_mmap_page_size <= 0) |
4698 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4699 | PL_mmap_page_size); | |
14a5cf38 JH |
4700 | if (b->posn < 0) { |
4701 | /* | |
4702 | * This is a hack - should never happen - open should | |
71200d45 | 4703 | * have set it ! |
14a5cf38 JH |
4704 | */ |
4705 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4706 | } | |
27da23d5 | 4707 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 | 4708 | len = st.st_size - posn; |
b91fbb93 | 4709 | m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
14a5cf38 | 4710 | if (m->mptr && m->mptr != (Mmap_t) - 1) { |
a5262162 | 4711 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4712 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4713 | #endif |
a5262162 | 4714 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4715 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4716 | #endif |
14a5cf38 JH |
4717 | PerlIOBase(f)->flags = |
4718 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4719 | b->end = ((STDCHAR *) m->mptr) + len; | |
4720 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4721 | b->ptr = b->buf; | |
4722 | m->len = len; | |
4723 | } | |
4724 | else { | |
4725 | b->buf = NULL; | |
4726 | } | |
4727 | } | |
4728 | else { | |
4729 | PerlIOBase(f)->flags = | |
4730 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4731 | b->buf = NULL; | |
4732 | b->ptr = b->end = b->ptr; | |
4733 | code = -1; | |
4734 | } | |
4735 | } | |
4736 | } | |
4737 | return code; | |
06da4f11 NIS |
4738 | } |
4739 | ||
4740 | IV | |
e87a358a | 4741 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4742 | { |
dcda55fc | 4743 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4744 | IV code = 0; |
4745 | if (m->len) { | |
dcda55fc | 4746 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4747 | if (b->buf) { |
1ccb7c8d JH |
4748 | /* The munmap address argument is tricky: depending on the |
4749 | * standard it is either "void *" or "caddr_t" (which is | |
4750 | * usually "char *" (signed or unsigned). If we cast it | |
4751 | * to "void *", those that have it caddr_t and an uptight | |
4752 | * C++ compiler, will freak out. But casting it as char* | |
4753 | * should work. Maybe. (Using Mmap_t figured out by | |
4754 | * Configure doesn't always work, apparently.) */ | |
4755 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4756 | b->buf = NULL; |
4757 | m->len = 0; | |
4758 | m->mptr = NULL; | |
4759 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4760 | code = -1; | |
4761 | } | |
4762 | b->ptr = b->end = b->buf; | |
4763 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4764 | } | |
4765 | return code; | |
06da4f11 NIS |
4766 | } |
4767 | ||
4768 | STDCHAR * | |
f62ce20a | 4769 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4770 | { |
dcda55fc AL |
4771 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4772 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4773 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4774 | /* | |
71200d45 | 4775 | * Already have a readbuffer in progress |
14a5cf38 JH |
4776 | */ |
4777 | return b->buf; | |
4778 | } | |
4779 | if (b->buf) { | |
4780 | /* | |
71200d45 | 4781 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4782 | */ |
22569500 NIS |
4783 | m->bbuf = b->buf; /* save it in case we need it again */ |
4784 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4785 | } |
4786 | if (!b->buf) { | |
22569500 | 4787 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4788 | if (!b->buf) { |
4789 | /* | |
71200d45 | 4790 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4791 | */ |
4792 | b->buf = m->bbuf; | |
4793 | } | |
4794 | } | |
4795 | b->ptr = b->end = b->buf; | |
4796 | if (b->buf) | |
4797 | return b->buf; | |
f62ce20a | 4798 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4799 | } |
4800 | ||
4801 | SSize_t | |
f62ce20a | 4802 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4803 | { |
dcda55fc AL |
4804 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4805 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4806 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4807 | PerlIO_flush(f); | |
4808 | if (b->ptr && (b->ptr - count) >= b->buf | |
4809 | && memEQ(b->ptr - count, vbuf, count)) { | |
4810 | b->ptr -= count; | |
4811 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4812 | return count; | |
4813 | } | |
4814 | if (m->len) { | |
4815 | /* | |
71200d45 | 4816 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4817 | */ |
4818 | PerlIO_flush(f); | |
4819 | /* | |
71200d45 | 4820 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4821 | */ |
4822 | if (!b->buf && m->bbuf) | |
4823 | b->buf = m->bbuf; | |
4824 | if (!b->buf) { | |
f62ce20a | 4825 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4826 | m->bbuf = b->buf; |
4827 | } | |
4828 | } | |
f62ce20a | 4829 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4830 | } |
4831 | ||
4832 | SSize_t | |
f62ce20a | 4833 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4834 | { |
de009b76 AL |
4835 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4836 | PerlIOBuf * const b = &m->base; | |
4837 | ||
14a5cf38 JH |
4838 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4839 | /* | |
71200d45 | 4840 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4841 | */ |
4842 | if (m->len) { | |
e87a358a | 4843 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4844 | return 0; |
4845 | } | |
4846 | /* | |
71200d45 | 4847 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4848 | */ |
4849 | if (!b->buf && m->bbuf) | |
4850 | b->buf = m->bbuf; | |
4851 | if (!b->buf) { | |
f62ce20a | 4852 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4853 | m->bbuf = b->buf; |
4854 | } | |
06da4f11 | 4855 | } |
f62ce20a | 4856 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4857 | } |
4858 | ||
4859 | IV | |
f62ce20a | 4860 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4861 | { |
dcda55fc AL |
4862 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4863 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4864 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4865 | /* |
71200d45 | 4866 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4867 | */ |
4868 | if (b->buf) { | |
4869 | if (m->len) { | |
4870 | /* | |
71200d45 | 4871 | * Unmap the buffer |
14a5cf38 | 4872 | */ |
e87a358a | 4873 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4874 | code = -1; |
4875 | } | |
4876 | else { | |
4877 | /* | |
4878 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4879 | * remember it in case we need one later |
14a5cf38 JH |
4880 | */ |
4881 | m->bbuf = b->buf; | |
4882 | } | |
4883 | } | |
4884 | return code; | |
06da4f11 NIS |
4885 | } |
4886 | ||
4887 | IV | |
f62ce20a | 4888 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4889 | { |
dcda55fc | 4890 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4891 | IV code = PerlIO_flush(f); |
4892 | if (code == 0 && !b->buf) { | |
f62ce20a | 4893 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4894 | } |
4895 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4896 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4897 | } |
4898 | return code; | |
06da4f11 NIS |
4899 | } |
4900 | ||
4901 | IV | |
f62ce20a | 4902 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4903 | { |
dcda55fc AL |
4904 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4905 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4906 | IV code = PerlIO_flush(f); |
4907 | if (m->bbuf) { | |
4908 | b->buf = m->bbuf; | |
4909 | m->bbuf = NULL; | |
4910 | b->ptr = b->end = b->buf; | |
4911 | } | |
f62ce20a | 4912 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4913 | code = -1; |
4914 | return code; | |
06da4f11 NIS |
4915 | } |
4916 | ||
71200d45 | 4917 | PerlIO * |
ecdeb87c | 4918 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4919 | { |
ecdeb87c | 4920 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4921 | } |
4922 | ||
06da4f11 | 4923 | |
27da23d5 | 4924 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4925 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4926 | "mmap", |
4927 | sizeof(PerlIOMmap), | |
86e05cf2 | 4928 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4929 | PerlIOBuf_pushed, |
44798d05 | 4930 | PerlIOBuf_popped, |
14a5cf38 | 4931 | PerlIOBuf_open, |
86e05cf2 | 4932 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4933 | NULL, |
4934 | PerlIOBase_fileno, | |
71200d45 | 4935 | PerlIOMmap_dup, |
14a5cf38 JH |
4936 | PerlIOBuf_read, |
4937 | PerlIOMmap_unread, | |
4938 | PerlIOMmap_write, | |
4939 | PerlIOBuf_seek, | |
4940 | PerlIOBuf_tell, | |
4941 | PerlIOBuf_close, | |
4942 | PerlIOMmap_flush, | |
4943 | PerlIOMmap_fill, | |
4944 | PerlIOBase_eof, | |
4945 | PerlIOBase_error, | |
4946 | PerlIOBase_clearerr, | |
4947 | PerlIOBase_setlinebuf, | |
4948 | PerlIOMmap_get_base, | |
4949 | PerlIOBuf_bufsiz, | |
4950 | PerlIOBuf_get_ptr, | |
4951 | PerlIOBuf_get_cnt, | |
4952 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4953 | }; |
4954 | ||
22569500 | 4955 | #endif /* HAS_MMAP */ |
06da4f11 | 4956 | |
9e353e3b | 4957 | PerlIO * |
e87a358a | 4958 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4959 | { |
97aff369 | 4960 | dVAR; |
a1ea730d | 4961 | if (!PL_perlio) { |
14a5cf38 JH |
4962 | PerlIO_stdstreams(aTHX); |
4963 | } | |
a1ea730d | 4964 | return &PL_perlio[1]; |
9e353e3b NIS |
4965 | } |
4966 | ||
9e353e3b | 4967 | PerlIO * |
e87a358a | 4968 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4969 | { |
97aff369 | 4970 | dVAR; |
a1ea730d | 4971 | if (!PL_perlio) { |
14a5cf38 JH |
4972 | PerlIO_stdstreams(aTHX); |
4973 | } | |
a1ea730d | 4974 | return &PL_perlio[2]; |
9e353e3b NIS |
4975 | } |
4976 | ||
9e353e3b | 4977 | PerlIO * |
e87a358a | 4978 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4979 | { |
97aff369 | 4980 | dVAR; |
a1ea730d | 4981 | if (!PL_perlio) { |
14a5cf38 JH |
4982 | PerlIO_stdstreams(aTHX); |
4983 | } | |
a1ea730d | 4984 | return &PL_perlio[3]; |
9e353e3b NIS |
4985 | } |
4986 | ||
4987 | /*--------------------------------------------------------------------------------------*/ | |
4988 | ||
9e353e3b NIS |
4989 | char * |
4990 | PerlIO_getname(PerlIO *f, char *buf) | |
4991 | { | |
14a5cf38 | 4992 | dTHX; |
a15cef0c | 4993 | #ifdef VMS |
73d840c0 | 4994 | char *name = NULL; |
7659f319 | 4995 | bool exported = FALSE; |
14a5cf38 | 4996 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4997 | if (!stdio) { |
4998 | stdio = PerlIO_exportFILE(f,0); | |
4999 | exported = TRUE; | |
5000 | } | |
5001 | if (stdio) { | |
14a5cf38 | 5002 | name = fgetname(stdio, buf); |
7659f319 CB |
5003 | if (exported) PerlIO_releaseFILE(f,stdio); |
5004 | } | |
73d840c0 | 5005 | return name; |
a15cef0c | 5006 | #else |
8772537c AL |
5007 | PERL_UNUSED_ARG(f); |
5008 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 5009 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 5010 | return NULL; |
a15cef0c | 5011 | #endif |
9e353e3b NIS |
5012 | } |
5013 | ||
5014 | ||
5015 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
5016 | /* |
5017 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 5018 | * terms of above |
14a5cf38 | 5019 | */ |
9e353e3b | 5020 | |
e87a358a NIS |
5021 | #undef PerlIO_fdopen |
5022 | PerlIO * | |
5023 | PerlIO_fdopen(int fd, const char *mode) | |
5024 | { | |
5025 | dTHX; | |
bd61b366 | 5026 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
5027 | } |
5028 | ||
5029 | #undef PerlIO_open | |
5030 | PerlIO * | |
5031 | PerlIO_open(const char *path, const char *mode) | |
5032 | { | |
5033 | dTHX; | |
42d9b98d | 5034 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 5035 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
5036 | } |
5037 | ||
5038 | #undef Perlio_reopen | |
5039 | PerlIO * | |
5040 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
5041 | { | |
5042 | dTHX; | |
42d9b98d | 5043 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 5044 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
5045 | } |
5046 | ||
9e353e3b | 5047 | #undef PerlIO_getc |
6f9d8c32 | 5048 | int |
9e353e3b | 5049 | PerlIO_getc(PerlIO *f) |
760ac839 | 5050 | { |
e87a358a | 5051 | dTHX; |
14a5cf38 | 5052 | STDCHAR buf[1]; |
de009b76 | 5053 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
5054 | return (unsigned char) buf[0]; |
5055 | } | |
5056 | return EOF; | |
313ca112 NIS |
5057 | } |
5058 | ||
5059 | #undef PerlIO_ungetc | |
5060 | int | |
5061 | PerlIO_ungetc(PerlIO *f, int ch) | |
5062 | { | |
e87a358a | 5063 | dTHX; |
14a5cf38 JH |
5064 | if (ch != EOF) { |
5065 | STDCHAR buf = ch; | |
5066 | if (PerlIO_unread(f, &buf, 1) == 1) | |
5067 | return ch; | |
5068 | } | |
5069 | return EOF; | |
760ac839 LW |
5070 | } |
5071 | ||
9e353e3b NIS |
5072 | #undef PerlIO_putc |
5073 | int | |
5074 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 5075 | { |
e87a358a | 5076 | dTHX; |
14a5cf38 JH |
5077 | STDCHAR buf = ch; |
5078 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5079 | } |
5080 | ||
9e353e3b | 5081 | #undef PerlIO_puts |
760ac839 | 5082 | int |
9e353e3b | 5083 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5084 | { |
e87a358a | 5085 | dTHX; |
dcda55fc | 5086 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5087 | } |
5088 | ||
5089 | #undef PerlIO_rewind | |
5090 | void | |
c78749f2 | 5091 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5092 | { |
e87a358a | 5093 | dTHX; |
14a5cf38 JH |
5094 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5095 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5096 | } |
5097 | ||
5098 | #undef PerlIO_vprintf | |
5099 | int | |
5100 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5101 | { | |
14a5cf38 | 5102 | dTHX; |
53ce71d3 | 5103 | SV * sv; |
b83604b4 | 5104 | const char *s; |
14a5cf38 JH |
5105 | STRLEN len; |
5106 | SSize_t wrote; | |
2cc61e15 | 5107 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5108 | va_list apc; |
5109 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5110 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 5111 | #else |
53ce71d3 | 5112 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5113 | #endif |
b83604b4 | 5114 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5115 | wrote = PerlIO_write(f, s, len); |
5116 | SvREFCNT_dec(sv); | |
5117 | return wrote; | |
760ac839 LW |
5118 | } |
5119 | ||
5120 | #undef PerlIO_printf | |
6f9d8c32 | 5121 | int |
14a5cf38 | 5122 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5123 | { |
14a5cf38 JH |
5124 | va_list ap; |
5125 | int result; | |
5126 | va_start(ap, fmt); | |
5127 | result = PerlIO_vprintf(f, fmt, ap); | |
5128 | va_end(ap); | |
5129 | return result; | |
760ac839 LW |
5130 | } |
5131 | ||
5132 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5133 | int |
14a5cf38 | 5134 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5135 | { |
e87a358a | 5136 | dTHX; |
14a5cf38 JH |
5137 | va_list ap; |
5138 | int result; | |
5139 | va_start(ap, fmt); | |
5140 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5141 | va_end(ap); | |
5142 | return result; | |
760ac839 LW |
5143 | } |
5144 | ||
5145 | #undef PerlIO_tmpfile | |
5146 | PerlIO * | |
c78749f2 | 5147 | PerlIO_tmpfile(void) |
760ac839 | 5148 | { |
2941a2e1 JH |
5149 | dTHX; |
5150 | PerlIO *f = NULL; | |
2941a2e1 | 5151 | #ifdef WIN32 |
de009b76 | 5152 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5153 | if (fd >= 0) |
5154 | f = PerlIO_fdopen(fd, "w+b"); | |
5155 | #else /* WIN32 */ | |
460c8493 | 5156 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5157 | int fd = -1; |
5158 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
5159 | const char * const tmpdir = PL_tainting ? NULL : PerlEnv_getenv("TMPDIR"); | |
7299ca58 | 5160 | SV * sv; |
2941a2e1 JH |
5161 | /* |
5162 | * I have no idea how portable mkstemp() is ... NI-S | |
5163 | */ | |
7299ca58 | 5164 | if (tmpdir && *tmpdir) { |
0b99e986 | 5165 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5166 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5167 | sv_catpv(sv, tempname + 4); |
5168 | fd = mkstemp(SvPVX(sv)); | |
5169 | } | |
5170 | if (fd < 0) { | |
7299ca58 | 5171 | sv = NULL; |
0b99e986 RGS |
5172 | /* else we try /tmp */ |
5173 | fd = mkstemp(tempname); | |
5174 | } | |
2941a2e1 JH |
5175 | if (fd >= 0) { |
5176 | f = PerlIO_fdopen(fd, "w+"); | |
5177 | if (f) | |
5178 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5179 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5180 | } |
ef8d46e8 | 5181 | SvREFCNT_dec(sv); |
2941a2e1 | 5182 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5183 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5184 | |
085e731f CB |
5185 | if (stdio) |
5186 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5187 | ||
2941a2e1 JH |
5188 | # endif /* else HAS_MKSTEMP */ |
5189 | #endif /* else WIN32 */ | |
5190 | return f; | |
760ac839 LW |
5191 | } |
5192 | ||
6f9d8c32 NIS |
5193 | #undef HAS_FSETPOS |
5194 | #undef HAS_FGETPOS | |
5195 | ||
22569500 NIS |
5196 | #endif /* USE_SFIO */ |
5197 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5198 | |
9e353e3b | 5199 | /*======================================================================================*/ |
14a5cf38 | 5200 | /* |
71200d45 NIS |
5201 | * Now some functions in terms of above which may be needed even if we are |
5202 | * not in true PerlIO mode | |
9e353e3b | 5203 | */ |
188f0c84 YO |
5204 | const char * |
5205 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5206 | { | |
5207 | dVAR; | |
8b850bd5 NC |
5208 | const char *direction = NULL; |
5209 | SV *layers; | |
188f0c84 YO |
5210 | /* |
5211 | * Need to supply default layer info from open.pm | |
5212 | */ | |
8b850bd5 NC |
5213 | |
5214 | if (!PL_curcop) | |
5215 | return NULL; | |
5216 | ||
5217 | if (mode && mode[0] != 'r') { | |
5218 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5219 | direction = "open>"; | |
5220 | } else { | |
5221 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5222 | direction = "open<"; | |
188f0c84 | 5223 | } |
8b850bd5 NC |
5224 | if (!direction) |
5225 | return NULL; | |
5226 | ||
5227 | layers = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, | |
5228 | 0, direction, 5, 0, 0); | |
5229 | ||
5230 | assert(layers); | |
5231 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5232 | } |
5233 | ||
9e353e3b | 5234 | |
760ac839 LW |
5235 | #ifndef HAS_FSETPOS |
5236 | #undef PerlIO_setpos | |
5237 | int | |
766a733e | 5238 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5239 | { |
14a5cf38 JH |
5240 | dTHX; |
5241 | if (SvOK(pos)) { | |
5242 | STRLEN len; | |
c4420975 | 5243 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5244 | if (f && len == sizeof(Off_t)) |
5245 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5246 | } | |
93189314 | 5247 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5248 | return -1; |
760ac839 | 5249 | } |
c411622e | 5250 | #else |
c411622e | 5251 | #undef PerlIO_setpos |
5252 | int | |
766a733e | 5253 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5254 | { |
14a5cf38 JH |
5255 | dTHX; |
5256 | if (SvOK(pos)) { | |
5257 | STRLEN len; | |
c4420975 | 5258 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5259 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5260 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5261 | return fsetpos64(f, fpos); |
d9b3e12d | 5262 | #else |
14a5cf38 | 5263 | return fsetpos(f, fpos); |
d9b3e12d | 5264 | #endif |
14a5cf38 | 5265 | } |
766a733e | 5266 | } |
93189314 | 5267 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5268 | return -1; |
c411622e | 5269 | } |
5270 | #endif | |
760ac839 LW |
5271 | |
5272 | #ifndef HAS_FGETPOS | |
5273 | #undef PerlIO_getpos | |
5274 | int | |
766a733e | 5275 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5276 | { |
14a5cf38 JH |
5277 | dTHX; |
5278 | Off_t posn = PerlIO_tell(f); | |
5279 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5280 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5281 | } |
c411622e | 5282 | #else |
c411622e | 5283 | #undef PerlIO_getpos |
5284 | int | |
766a733e | 5285 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5286 | { |
14a5cf38 JH |
5287 | dTHX; |
5288 | Fpos_t fpos; | |
5289 | int code; | |
2d4389e4 | 5290 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5291 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5292 | #else |
14a5cf38 | 5293 | code = fgetpos(f, &fpos); |
d9b3e12d | 5294 | #endif |
14a5cf38 JH |
5295 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5296 | return code; | |
c411622e | 5297 | } |
5298 | #endif | |
760ac839 LW |
5299 | |
5300 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5301 | ||
5302 | int | |
c78749f2 | 5303 | vprintf(char *pat, char *args) |
662a7e3f CS |
5304 | { |
5305 | _doprnt(pat, args, stdout); | |
22569500 | 5306 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5307 | * value */ |
662a7e3f CS |
5308 | } |
5309 | ||
5310 | int | |
c78749f2 | 5311 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5312 | { |
5313 | _doprnt(pat, args, fd); | |
22569500 | 5314 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5315 | * value */ |
760ac839 LW |
5316 | } |
5317 | ||
5318 | #endif | |
5319 | ||
5320 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5321 | int |
8ac85365 | 5322 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5323 | { |
8ff9a42b | 5324 | dTHX; |
d9fad198 | 5325 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5326 | PERL_UNUSED_CONTEXT; |
5327 | ||
1208b3dd JH |
5328 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5329 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5330 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5331 | } |
1208b3dd | 5332 | #endif |
14a5cf38 | 5333 | return val; |
760ac839 LW |
5334 | } |
5335 | #endif | |
5336 | ||
5337 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5338 | int |
14a5cf38 | 5339 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5340 | { |
14a5cf38 JH |
5341 | va_list ap; |
5342 | int result; | |
5343 | va_start(ap, fmt); | |
5344 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5345 | va_end(ap); | |
5346 | return result; | |
760ac839 LW |
5347 | } |
5348 | #endif | |
9cfa90c0 NC |
5349 | |
5350 | /* | |
5351 | * Local variables: | |
5352 | * c-indentation-style: bsd | |
5353 | * c-basic-offset: 4 | |
5354 | * indent-tabs-mode: t | |
5355 | * End: | |
5356 | * | |
37442d52 RGS |
5357 | * ex: set ts=8 sts=4 sw=4 noet: |
5358 | */ |