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; |
4fa7c2bf | 810 | SAVEBOOL(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 | } |
4fa7c2bf | 815 | PL_in_load_module = TRUE; |
d7a09b41 SR |
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 | LEAVE; |
821 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
822 | } | |
14a5cf38 JH |
823 | } |
824 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
825 | return NULL; | |
f3862f8b NIS |
826 | } |
827 | ||
2a1bc955 | 828 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
829 | |
830 | static int | |
831 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
832 | { | |
14a5cf38 | 833 | if (SvROK(sv)) { |
159b6efe | 834 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
835 | PerlIO * const ifp = IoIFP(io); |
836 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
837 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
838 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
839 | } |
840 | return 0; | |
b13b2135 NIS |
841 | } |
842 | ||
843 | static int | |
844 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
845 | { | |
14a5cf38 | 846 | if (SvROK(sv)) { |
159b6efe | 847 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
848 | PerlIO * const ifp = IoIFP(io); |
849 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
850 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
851 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
852 | } |
853 | return 0; | |
b13b2135 NIS |
854 | } |
855 | ||
856 | static int | |
857 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
858 | { | |
be2597df | 859 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 860 | return 0; |
b13b2135 NIS |
861 | } |
862 | ||
863 | static int | |
864 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
865 | { | |
be2597df | 866 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 867 | return 0; |
b13b2135 NIS |
868 | } |
869 | ||
870 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
871 | perlio_mg_get, |
872 | perlio_mg_set, | |
22569500 | 873 | NULL, /* len */ |
14a5cf38 JH |
874 | perlio_mg_clear, |
875 | perlio_mg_free | |
b13b2135 NIS |
876 | }; |
877 | ||
878 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
879 | { | |
14a5cf38 | 880 | dXSARGS; |
dcda55fc AL |
881 | SV * const sv = SvRV(ST(1)); |
882 | AV * const av = newAV(); | |
14a5cf38 JH |
883 | MAGIC *mg; |
884 | int count = 0; | |
885 | int i; | |
ad64d0ec | 886 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
887 | SvRMAGICAL_off(sv); |
888 | mg = mg_find(sv, PERL_MAGIC_ext); | |
889 | mg->mg_virtual = &perlio_vtab; | |
890 | mg_magical(sv); | |
be2597df | 891 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
892 | for (i = 2; i < items; i++) { |
893 | STRLEN len; | |
dcda55fc AL |
894 | const char * const name = SvPV_const(ST(i), len); |
895 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 896 | if (layer) { |
b37c2d43 | 897 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
898 | } |
899 | else { | |
900 | ST(count) = ST(i); | |
901 | count++; | |
902 | } | |
903 | } | |
904 | SvREFCNT_dec(av); | |
905 | XSRETURN(count); | |
906 | } | |
907 | ||
22569500 | 908 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 909 | |
e3f3bf95 NIS |
910 | SV * |
911 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 912 | { |
da51bb9b | 913 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 914 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 915 | return sv; |
e3f3bf95 NIS |
916 | } |
917 | ||
5ca1d77f | 918 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 919 | { |
37725cdc | 920 | /* This is used as a %SIG{__WARN__} handler to supress warnings |
c9bca74a NIS |
921 | during loading of layers. |
922 | */ | |
97aff369 | 923 | dVAR; |
c9bca74a | 924 | dXSARGS; |
58c0efa5 | 925 | PERL_UNUSED_ARG(cv); |
c9bca74a | 926 | if (items) |
e62f0680 | 927 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
928 | XSRETURN(0); |
929 | } | |
930 | ||
5ca1d77f | 931 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 932 | { |
97aff369 | 933 | dVAR; |
14a5cf38 | 934 | dXSARGS; |
58c0efa5 | 935 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
936 | if (items < 2) |
937 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
938 | else { | |
de009b76 | 939 | STRLEN len; |
46c461b5 | 940 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 941 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 942 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
943 | ST(0) = |
944 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
945 | &PL_sv_undef; | |
946 | XSRETURN(1); | |
947 | } | |
0c4f7ff0 NIS |
948 | } |
949 | ||
e3f3bf95 NIS |
950 | void |
951 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
952 | { | |
97aff369 | 953 | dVAR; |
3a1ee7e8 NIS |
954 | if (!PL_known_layers) |
955 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 956 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 957 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
958 | } |
959 | ||
1141d9f8 | 960 | int |
fcf2db38 | 961 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 962 | { |
97aff369 | 963 | dVAR; |
14a5cf38 JH |
964 | if (names) { |
965 | const char *s = names; | |
966 | while (*s) { | |
967 | while (isSPACE(*s) || *s == ':') | |
968 | s++; | |
969 | if (*s) { | |
970 | STRLEN llen = 0; | |
971 | const char *e = s; | |
bd61b366 | 972 | const char *as = NULL; |
14a5cf38 JH |
973 | STRLEN alen = 0; |
974 | if (!isIDFIRST(*s)) { | |
975 | /* | |
976 | * Message is consistent with how attribute lists are | |
977 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 978 | * seen as an invalid separator character. |
14a5cf38 | 979 | */ |
de009b76 | 980 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
981 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
982 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
983 | q, *s, q, s); | |
93189314 | 984 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
985 | return -1; |
986 | } | |
987 | do { | |
988 | e++; | |
989 | } while (isALNUM(*e)); | |
990 | llen = e - s; | |
991 | if (*e == '(') { | |
992 | int nesting = 1; | |
993 | as = ++e; | |
994 | while (nesting) { | |
995 | switch (*e++) { | |
996 | case ')': | |
997 | if (--nesting == 0) | |
998 | alen = (e - 1) - as; | |
999 | break; | |
1000 | case '(': | |
1001 | ++nesting; | |
1002 | break; | |
1003 | case '\\': | |
1004 | /* | |
1005 | * It's a nul terminated string, not allowed | |
1006 | * to \ the terminating null. Anything other | |
71200d45 | 1007 | * character is passed over. |
14a5cf38 JH |
1008 | */ |
1009 | if (*e++) { | |
1010 | break; | |
1011 | } | |
1012 | /* | |
71200d45 | 1013 | * Drop through |
14a5cf38 JH |
1014 | */ |
1015 | case '\0': | |
1016 | e--; | |
a2a5de95 NC |
1017 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1018 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
1019 | (int) (e - s), s); | |
14a5cf38 JH |
1020 | return -1; |
1021 | default: | |
1022 | /* | |
71200d45 | 1023 | * boring. |
14a5cf38 JH |
1024 | */ |
1025 | break; | |
1026 | } | |
1027 | } | |
1028 | } | |
1029 | if (e > s) { | |
46c461b5 | 1030 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1031 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1032 | if (layer) { | |
a951d81d BL |
1033 | SV *arg = NULL; |
1034 | if (as) | |
1035 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1036 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 1037 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 1038 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1039 | } |
1040 | else { | |
a2a5de95 NC |
1041 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
1042 | (int) llen, s); | |
14a5cf38 JH |
1043 | return -1; |
1044 | } | |
1045 | } | |
1046 | s = e; | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | return 0; | |
1141d9f8 NIS |
1051 | } |
1052 | ||
dfebf958 | 1053 | void |
fcf2db38 | 1054 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1055 | { |
97aff369 | 1056 | dVAR; |
27da23d5 | 1057 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1058 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1059 | tab = &PerlIO_crlf; |
846be114 | 1060 | #else |
6ce75a77 | 1061 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1062 | tab = &PerlIO_stdio; |
846be114 | 1063 | #endif |
14a5cf38 | 1064 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1065 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1066 | &PL_sv_undef); |
dfebf958 NIS |
1067 | } |
1068 | ||
e3f3bf95 | 1069 | SV * |
14a5cf38 | 1070 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1071 | { |
14a5cf38 | 1072 | return av->array[n].arg; |
e3f3bf95 NIS |
1073 | } |
1074 | ||
f3862f8b | 1075 | PerlIO_funcs * |
14a5cf38 | 1076 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1077 | { |
14a5cf38 JH |
1078 | if (n >= 0 && n < av->cur) { |
1079 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1080 | av->array[n].funcs->name); | |
1081 | return av->array[n].funcs; | |
1082 | } | |
1083 | if (!def) | |
1084 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1085 | return def; | |
e3f3bf95 NIS |
1086 | } |
1087 | ||
4ec2216f NIS |
1088 | IV |
1089 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1090 | { | |
8772537c AL |
1091 | PERL_UNUSED_ARG(mode); |
1092 | PERL_UNUSED_ARG(arg); | |
1093 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1094 | if (PerlIOValid(f)) { |
1095 | PerlIO_flush(f); | |
1096 | PerlIO_pop(aTHX_ f); | |
1097 | return 0; | |
1098 | } | |
1099 | return -1; | |
1100 | } | |
1101 | ||
27da23d5 | 1102 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1103 | sizeof(PerlIO_funcs), |
1104 | "pop", | |
1105 | 0, | |
1106 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1107 | PerlIOPop_pushed, | |
1108 | NULL, | |
1109 | NULL, | |
1110 | NULL, | |
1111 | NULL, | |
1112 | NULL, | |
1113 | NULL, | |
1114 | NULL, | |
1115 | NULL, | |
1116 | NULL, | |
1117 | NULL, | |
de009b76 AL |
1118 | NULL, |
1119 | NULL, | |
4ec2216f NIS |
1120 | NULL, /* flush */ |
1121 | NULL, /* fill */ | |
1122 | NULL, | |
1123 | NULL, | |
1124 | NULL, | |
1125 | NULL, | |
1126 | NULL, /* get_base */ | |
1127 | NULL, /* get_bufsiz */ | |
1128 | NULL, /* get_ptr */ | |
1129 | NULL, /* get_cnt */ | |
1130 | NULL, /* set_ptrcnt */ | |
1131 | }; | |
1132 | ||
fcf2db38 | 1133 | PerlIO_list_t * |
e3f3bf95 NIS |
1134 | PerlIO_default_layers(pTHX) |
1135 | { | |
97aff369 | 1136 | dVAR; |
3a1ee7e8 | 1137 | if (!PL_def_layerlist) { |
bd61b366 | 1138 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1139 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1140 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1141 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1142 | #if defined(WIN32) |
27da23d5 | 1143 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1144 | #if 0 |
14a5cf38 | 1145 | osLayer = &PerlIO_win32; |
0c4128ad | 1146 | #endif |
2f8118af | 1147 | #endif |
27da23d5 JH |
1148 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1149 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1150 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1151 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1152 | #ifdef HAS_MMAP |
27da23d5 | 1153 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1154 | #endif |
27da23d5 JH |
1155 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1156 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1157 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1158 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1159 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1160 | &PL_sv_undef); | |
1161 | if (s) { | |
3a1ee7e8 | 1162 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1163 | } |
1164 | else { | |
3a1ee7e8 | 1165 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1166 | } |
1141d9f8 | 1167 | } |
3a1ee7e8 NIS |
1168 | if (PL_def_layerlist->cur < 2) { |
1169 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1170 | } |
3a1ee7e8 | 1171 | return PL_def_layerlist; |
e3f3bf95 NIS |
1172 | } |
1173 | ||
0c4f7ff0 NIS |
1174 | void |
1175 | Perl_boot_core_PerlIO(pTHX) | |
1176 | { | |
1177 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1178 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1179 | __FILE__); | |
0c4f7ff0 | 1180 | #endif |
14a5cf38 | 1181 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1182 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1183 | } |
e3f3bf95 NIS |
1184 | |
1185 | PerlIO_funcs * | |
1186 | PerlIO_default_layer(pTHX_ I32 n) | |
1187 | { | |
97aff369 | 1188 | dVAR; |
46c461b5 | 1189 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1190 | if (n < 0) |
1191 | n += av->cur; | |
27da23d5 | 1192 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1193 | } |
1194 | ||
a999f61b NIS |
1195 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1196 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1197 | |
1198 | void | |
1141d9f8 | 1199 | PerlIO_stdstreams(pTHX) |
60382766 | 1200 | { |
97aff369 | 1201 | dVAR; |
a1ea730d | 1202 | if (!PL_perlio) { |
14a5cf38 JH |
1203 | PerlIO_allocate(aTHX); |
1204 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); | |
1205 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1206 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1207 | } | |
60382766 NIS |
1208 | } |
1209 | ||
1210 | PerlIO * | |
27da23d5 | 1211 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1212 | { |
2dc2558e | 1213 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 TM |
1214 | Perl_croak( aTHX_ |
1215 | "%s (%d) does not match %s (%d)", | |
1216 | "PerlIO layer function table size", tab->fsize, | |
1217 | "size expected by this perl", sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1218 | } |
1219 | if (tab->size) { | |
b464bac0 | 1220 | PerlIOl *l; |
2dc2558e | 1221 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 TM |
1222 | Perl_croak( aTHX_ |
1223 | "%s (%d) smaller than %s (%d)", | |
1224 | "PerlIO layer instance size", tab->size, | |
1225 | "size expected by this perl", sizeof(PerlIOl) ); | |
2dc2558e NIS |
1226 | } |
1227 | /* Real layer with a data area */ | |
002e75cf JH |
1228 | if (f) { |
1229 | char *temp; | |
1230 | Newxz(temp, tab->size, char); | |
1231 | l = (PerlIOl*)temp; | |
1232 | if (l) { | |
1233 | l->next = *f; | |
1234 | l->tab = (PerlIO_funcs*) tab; | |
1235 | *f = l; | |
1236 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1237 | (void*)f, tab->name, | |
1238 | (mode) ? mode : "(Null)", (void*)arg); | |
1239 | if (*l->tab->Pushed && | |
1240 | (*l->tab->Pushed) | |
1241 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1242 | PerlIO_pop(aTHX_ f); | |
1243 | return NULL; | |
1244 | } | |
2dc2558e | 1245 | } |
002e75cf JH |
1246 | else |
1247 | return NULL; | |
2dc2558e NIS |
1248 | } |
1249 | } | |
1250 | else if (f) { | |
1251 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1252 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1253 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1254 | if (tab->Pushed && |
27da23d5 | 1255 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1256 | return NULL; |
14a5cf38 JH |
1257 | } |
1258 | } | |
1259 | return f; | |
60382766 NIS |
1260 | } |
1261 | ||
dfebf958 | 1262 | IV |
86e05cf2 NIS |
1263 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1264 | { | |
1265 | if (PerlIOValid(f)) { | |
1266 | /* Is layer suitable for raw stream ? */ | |
1267 | if (PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1268 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1269 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1270 | } | |
1271 | else { | |
1272 | /* Not suitable - pop it */ | |
1273 | PerlIO_pop(aTHX_ f); | |
1274 | } | |
1275 | return 0; | |
1276 | } | |
1277 | return -1; | |
1278 | } | |
1279 | ||
1280 | IV | |
2dc2558e | 1281 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1282 | { |
8772537c AL |
1283 | PERL_UNUSED_ARG(mode); |
1284 | PERL_UNUSED_ARG(arg); | |
1285 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1286 | |
04892f78 | 1287 | if (PerlIOValid(f)) { |
86e05cf2 | 1288 | PerlIO *t; |
de009b76 | 1289 | const PerlIOl *l; |
14a5cf38 | 1290 | PerlIO_flush(f); |
86e05cf2 NIS |
1291 | /* |
1292 | * Strip all layers that are not suitable for a raw stream | |
1293 | */ | |
1294 | t = f; | |
1295 | while (t && (l = *t)) { | |
1296 | if (l->tab->Binmode) { | |
1297 | /* Has a handler - normal case */ | |
9d97e8b8 | 1298 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1299 | if (*t == l) { |
1300 | /* Layer still there - move down a layer */ | |
1301 | t = PerlIONext(t); | |
1302 | } | |
1303 | } | |
1304 | else { | |
1305 | return -1; | |
1306 | } | |
14a5cf38 JH |
1307 | } |
1308 | else { | |
86e05cf2 NIS |
1309 | /* No handler - pop it */ |
1310 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1311 | } |
1312 | } | |
86e05cf2 NIS |
1313 | if (PerlIOValid(f)) { |
1314 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); | |
1315 | return 0; | |
1316 | } | |
14a5cf38 JH |
1317 | } |
1318 | return -1; | |
dfebf958 NIS |
1319 | } |
1320 | ||
ac27b0f5 | 1321 | int |
14a5cf38 | 1322 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1323 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1324 | { |
14a5cf38 JH |
1325 | int code = 0; |
1326 | while (n < max) { | |
8772537c | 1327 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1328 | if (tab) { |
1329 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1330 | code = -1; | |
1331 | break; | |
1332 | } | |
1333 | } | |
1334 | n++; | |
1335 | } | |
1336 | return code; | |
e3f3bf95 NIS |
1337 | } |
1338 | ||
1339 | int | |
ac27b0f5 NIS |
1340 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1341 | { | |
14a5cf38 | 1342 | int code = 0; |
53f1b6d2 | 1343 | if (f && names) { |
8772537c | 1344 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1345 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1346 | if (code == 0) { | |
d9dac8cd | 1347 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1348 | } |
3a1ee7e8 | 1349 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1350 | } |
14a5cf38 | 1351 | return code; |
ac27b0f5 NIS |
1352 | } |
1353 | ||
f3862f8b | 1354 | |
60382766 | 1355 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1356 | /* |
71200d45 | 1357 | * Given the abstraction above the public API functions |
14a5cf38 | 1358 | */ |
60382766 NIS |
1359 | |
1360 | int | |
f5b9d040 | 1361 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1362 | { |
68b5363f PD |
1363 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
1364 | (PerlIOBase(f)) ? PerlIOBase(f)->tab->name : "(Null)", | |
1365 | iotype, mode, (names) ? names : "(Null)"); | |
1366 | ||
03c0554d NIS |
1367 | if (names) { |
1368 | /* Do not flush etc. if (e.g.) switching encodings. | |
1369 | if a pushed layer knows it needs to flush lower layers | |
1370 | (for example :unix which is never going to call them) | |
1371 | it can do the flush when it is pushed. | |
1372 | */ | |
1373 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1374 | } | |
1375 | else { | |
86e05cf2 | 1376 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1377 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1378 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1379 | O_BINARY so we can look for it in mode. | |
1380 | */ | |
1381 | if (!(mode & O_BINARY)) { | |
1382 | /* Text mode */ | |
86e05cf2 NIS |
1383 | /* FIXME?: Looking down the layer stack seems wrong, |
1384 | but is a way of reaching past (say) an encoding layer | |
1385 | to flip CRLF-ness of the layer(s) below | |
1386 | */ | |
03c0554d NIS |
1387 | while (*f) { |
1388 | /* Perhaps we should turn on bottom-most aware layer | |
1389 | e.g. Ilya's idea that UNIX TTY could serve | |
1390 | */ | |
1391 | if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { | |
1392 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1393 | /* Not in text mode - flush any pending stuff and flip it */ | |
1394 | PerlIO_flush(f); | |
1395 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1396 | } | |
1397 | /* Only need to turn it on in one layer so we are done */ | |
1398 | return TRUE; | |
ed53a2bb | 1399 | } |
03c0554d | 1400 | f = PerlIONext(f); |
14a5cf38 | 1401 | } |
03c0554d NIS |
1402 | /* Not finding a CRLF aware layer presumably means we are binary |
1403 | which is not what was requested - so we failed | |
1404 | We _could_ push :crlf layer but so could caller | |
1405 | */ | |
1406 | return FALSE; | |
14a5cf38 | 1407 | } |
6ce75a77 | 1408 | #endif |
86e05cf2 NIS |
1409 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1410 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1411 | */ |
a0714e2c | 1412 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1413 | } |
f5b9d040 NIS |
1414 | } |
1415 | ||
f5b9d040 | 1416 | int |
e87a358a | 1417 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1418 | { |
37725cdc | 1419 | if (PerlIOValid(f)) { |
46c461b5 | 1420 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1421 | if (tab && tab->Close) |
1422 | return (*tab->Close)(aTHX_ f); | |
1423 | else | |
1424 | return PerlIOBase_close(aTHX_ f); | |
1425 | } | |
14a5cf38 | 1426 | else { |
93189314 | 1427 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1428 | return -1; |
1429 | } | |
76ced9ad NIS |
1430 | } |
1431 | ||
b931b1d9 | 1432 | int |
e87a358a | 1433 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1434 | { |
de009b76 | 1435 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1436 | while (PerlIOValid(f)) { |
1437 | PerlIO_pop(aTHX_ f); | |
f6c77cf1 | 1438 | } |
14a5cf38 | 1439 | return code; |
b931b1d9 NIS |
1440 | } |
1441 | ||
b931b1d9 | 1442 | int |
e87a358a | 1443 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1444 | { |
97aff369 | 1445 | dVAR; |
b32dd47e | 1446 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1447 | } |
1448 | ||
1141d9f8 | 1449 | |
fcf2db38 | 1450 | static PerlIO_funcs * |
2edd7e44 NIS |
1451 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1452 | { | |
97aff369 | 1453 | dVAR; |
14a5cf38 | 1454 | /* |
71200d45 | 1455 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1456 | */ |
526fd1b4 | 1457 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1458 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1459 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1460 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 NC |
1461 | if (!f) |
1462 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); | |
75208dda RGS |
1463 | return f; |
1464 | } | |
14a5cf38 JH |
1465 | |
1466 | /* | |
71200d45 | 1467 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1468 | */ |
1469 | switch (SvTYPE(sv)) { | |
1470 | case SVt_PVAV: | |
6a245ed1 | 1471 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1472 | case SVt_PVHV: |
6a245ed1 | 1473 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1474 | case SVt_PVCV: |
6a245ed1 | 1475 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1476 | case SVt_PVGV: |
6a245ed1 | 1477 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1478 | default: |
1479 | return NULL; | |
14a5cf38 | 1480 | } |
2edd7e44 NIS |
1481 | } |
1482 | ||
fcf2db38 | 1483 | PerlIO_list_t * |
14a5cf38 JH |
1484 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1485 | const char *mode, int narg, SV **args) | |
1486 | { | |
97aff369 | 1487 | dVAR; |
14a5cf38 JH |
1488 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1489 | int incdef = 1; | |
a1ea730d | 1490 | if (!PL_perlio) |
14a5cf38 JH |
1491 | PerlIO_stdstreams(aTHX); |
1492 | if (narg) { | |
dcda55fc | 1493 | SV * const arg = *args; |
14a5cf38 | 1494 | /* |
71200d45 NIS |
1495 | * If it is a reference but not an object see if we have a handler |
1496 | * for it | |
14a5cf38 JH |
1497 | */ |
1498 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1499 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1500 | if (handler) { |
3a1ee7e8 NIS |
1501 | def = PerlIO_list_alloc(aTHX); |
1502 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1503 | incdef = 0; |
1504 | } | |
1505 | /* | |
e934609f | 1506 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1507 | * something sensible else we will just stringfy and open |
71200d45 | 1508 | * resulting string. |
14a5cf38 JH |
1509 | */ |
1510 | } | |
1511 | } | |
9fe371da | 1512 | if (!layers || !*layers) |
11bcd5da | 1513 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1514 | if (layers && *layers) { |
1515 | PerlIO_list_t *av; | |
1516 | if (incdef) { | |
a951d81d | 1517 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1518 | } |
1519 | else { | |
1520 | av = def; | |
1521 | } | |
0cff2cf3 NIS |
1522 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1523 | return av; | |
1524 | } | |
1525 | else { | |
1526 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1527 | return NULL; |
0cff2cf3 | 1528 | } |
14a5cf38 JH |
1529 | } |
1530 | else { | |
1531 | if (incdef) | |
1532 | def->refcnt++; | |
1533 | return def; | |
1534 | } | |
ee518936 NIS |
1535 | } |
1536 | ||
1537 | PerlIO * | |
14a5cf38 JH |
1538 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1539 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1540 | { | |
97aff369 | 1541 | dVAR; |
14a5cf38 JH |
1542 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1543 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1544 | if (!layers || !*layers) |
11bcd5da | 1545 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1546 | if (layers && *layers) |
1547 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1548 | } | |
1549 | } | |
1550 | else { | |
de009b76 | 1551 | PerlIO_list_t *layera; |
14a5cf38 JH |
1552 | IV n; |
1553 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1554 | if (PerlIOValid(f)) { |
14a5cf38 | 1555 | /* |
71200d45 NIS |
1556 | * This is "reopen" - it is not tested as perl does not use it |
1557 | * yet | |
14a5cf38 JH |
1558 | */ |
1559 | PerlIOl *l = *f; | |
3a1ee7e8 | 1560 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1561 | while (l) { |
a951d81d BL |
1562 | SV *arg = NULL; |
1563 | if (l->tab->Getarg) | |
1564 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); | |
1565 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1566 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1567 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1568 | l = *PerlIONext(&l); |
1569 | } | |
1570 | } | |
1571 | else { | |
1572 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1573 | if (!layera) { |
1574 | return NULL; | |
1575 | } | |
14a5cf38 JH |
1576 | } |
1577 | /* | |
71200d45 | 1578 | * Start at "top" of layer stack |
14a5cf38 JH |
1579 | */ |
1580 | n = layera->cur - 1; | |
1581 | while (n >= 0) { | |
46c461b5 | 1582 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1583 | if (t && t->Open) { |
1584 | tab = t; | |
1585 | break; | |
1586 | } | |
1587 | n--; | |
1588 | } | |
1589 | if (tab) { | |
1590 | /* | |
71200d45 | 1591 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1592 | */ |
7cf31beb | 1593 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1594 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1595 | } |
14a5cf38 | 1596 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1597 | tab->name, layers ? layers : "(Null)", mode, fd, |
1598 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1599 | if (tab->Open) |
1600 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1601 | f, narg, args); | |
1602 | else { | |
1603 | SETERRNO(EINVAL, LIB_INVARG); | |
1604 | f = NULL; | |
1605 | } | |
14a5cf38 JH |
1606 | if (f) { |
1607 | if (n + 1 < layera->cur) { | |
1608 | /* | |
1609 | * More layers above the one that we used to open - | |
71200d45 | 1610 | * apply them now |
14a5cf38 | 1611 | */ |
d9dac8cd NIS |
1612 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1613 | /* If pushing layers fails close the file */ | |
1614 | PerlIO_close(f); | |
14a5cf38 JH |
1615 | f = NULL; |
1616 | } | |
1617 | } | |
1618 | } | |
1619 | } | |
3a1ee7e8 | 1620 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1621 | } |
1622 | return f; | |
ee518936 | 1623 | } |
b931b1d9 NIS |
1624 | |
1625 | ||
9e353e3b | 1626 | SSize_t |
e87a358a | 1627 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1628 | { |
7918f24d NC |
1629 | PERL_ARGS_ASSERT_PERLIO_READ; |
1630 | ||
b32dd47e | 1631 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1632 | } |
1633 | ||
313ca112 | 1634 | SSize_t |
e87a358a | 1635 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1636 | { |
7918f24d NC |
1637 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1638 | ||
b32dd47e | 1639 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1640 | } |
1641 | ||
9e353e3b | 1642 | SSize_t |
e87a358a | 1643 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1644 | { |
7918f24d NC |
1645 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1646 | ||
b32dd47e | 1647 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1648 | } |
1649 | ||
6f9d8c32 | 1650 | int |
e87a358a | 1651 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1652 | { |
b32dd47e | 1653 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1654 | } |
1655 | ||
9e353e3b | 1656 | Off_t |
e87a358a | 1657 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1658 | { |
b32dd47e | 1659 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1660 | } |
1661 | ||
6f9d8c32 | 1662 | int |
e87a358a | 1663 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1664 | { |
97aff369 | 1665 | dVAR; |
14a5cf38 JH |
1666 | if (f) { |
1667 | if (*f) { | |
de009b76 | 1668 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1669 | |
1670 | if (tab && tab->Flush) | |
f62ce20a | 1671 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1672 | else |
1673 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1674 | } |
1675 | else { | |
fe5a182c | 1676 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1677 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1678 | return -1; |
1679 | } | |
1680 | } | |
1681 | else { | |
1682 | /* | |
1683 | * Is it good API design to do flush-all on NULL, a potentially | |
1684 | * errorneous input? Maybe some magical value (PerlIO* | |
1685 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1686 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1687 | * decisions? --jhi |
14a5cf38 | 1688 | */ |
a1ea730d | 1689 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1690 | int code = 0; |
1691 | while ((f = *table)) { | |
1692 | int i; | |
1693 | table = (PerlIO **) (f++); | |
1694 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1695 | if (*f && PerlIO_flush(f) != 0) | |
1696 | code = -1; | |
1697 | f++; | |
1698 | } | |
1699 | } | |
1700 | return code; | |
1701 | } | |
760ac839 LW |
1702 | } |
1703 | ||
a9c883f6 | 1704 | void |
f62ce20a | 1705 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1706 | { |
97aff369 | 1707 | dVAR; |
a1ea730d | 1708 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1709 | PerlIO *f; |
1710 | while ((f = *table)) { | |
1711 | int i; | |
1712 | table = (PerlIO **) (f++); | |
1713 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1714 | if (*f | |
1715 | && (PerlIOBase(f)-> | |
1716 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1717 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1718 | PerlIO_flush(f); | |
1719 | f++; | |
1720 | } | |
a9c883f6 | 1721 | } |
a9c883f6 NIS |
1722 | } |
1723 | ||
06da4f11 | 1724 | int |
e87a358a | 1725 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1726 | { |
b32dd47e | 1727 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1728 | } |
1729 | ||
f3862f8b NIS |
1730 | int |
1731 | PerlIO_isutf8(PerlIO *f) | |
1732 | { | |
1b7a0411 JH |
1733 | if (PerlIOValid(f)) |
1734 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1735 | else | |
1736 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1737 | |
1b7a0411 | 1738 | return -1; |
f3862f8b NIS |
1739 | } |
1740 | ||
6f9d8c32 | 1741 | int |
e87a358a | 1742 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1743 | { |
b32dd47e | 1744 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1745 | } |
1746 | ||
9e353e3b | 1747 | int |
e87a358a | 1748 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1749 | { |
b32dd47e | 1750 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1751 | } |
1752 | ||
9e353e3b | 1753 | void |
e87a358a | 1754 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1755 | { |
b32dd47e | 1756 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1757 | } |
1758 | ||
9e353e3b | 1759 | void |
e87a358a | 1760 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1761 | { |
b32dd47e | 1762 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1763 | } |
1764 | ||
9e353e3b NIS |
1765 | int |
1766 | PerlIO_has_base(PerlIO *f) | |
1767 | { | |
1b7a0411 | 1768 | if (PerlIOValid(f)) { |
46c461b5 | 1769 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1770 | |
1771 | if (tab) | |
1772 | return (tab->Get_base != NULL); | |
1b7a0411 | 1773 | } |
1b7a0411 JH |
1774 | |
1775 | return 0; | |
760ac839 LW |
1776 | } |
1777 | ||
9e353e3b NIS |
1778 | int |
1779 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1780 | { |
d7dfc388 SK |
1781 | if (PerlIOValid(f)) { |
1782 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1783 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1784 | |
d7dfc388 SK |
1785 | if (tab) |
1786 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1787 | } |
14a5cf38 | 1788 | } |
1b7a0411 | 1789 | |
14a5cf38 | 1790 | return 0; |
9e353e3b NIS |
1791 | } |
1792 | ||
9e353e3b NIS |
1793 | int |
1794 | PerlIO_has_cntptr(PerlIO *f) | |
1795 | { | |
04892f78 | 1796 | if (PerlIOValid(f)) { |
46c461b5 | 1797 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1798 | |
1799 | if (tab) | |
1800 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1801 | } |
1b7a0411 | 1802 | |
14a5cf38 | 1803 | return 0; |
9e353e3b NIS |
1804 | } |
1805 | ||
9e353e3b NIS |
1806 | int |
1807 | PerlIO_canset_cnt(PerlIO *f) | |
1808 | { | |
04892f78 | 1809 | if (PerlIOValid(f)) { |
46c461b5 | 1810 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1811 | |
1812 | if (tab) | |
1813 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1814 | } |
1b7a0411 | 1815 | |
14a5cf38 | 1816 | return 0; |
760ac839 LW |
1817 | } |
1818 | ||
888911fc | 1819 | STDCHAR * |
e87a358a | 1820 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1821 | { |
b32dd47e | 1822 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1823 | } |
1824 | ||
9e353e3b | 1825 | int |
e87a358a | 1826 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1827 | { |
b32dd47e | 1828 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1829 | } |
1830 | ||
9e353e3b | 1831 | STDCHAR * |
e87a358a | 1832 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1833 | { |
b32dd47e | 1834 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1835 | } |
1836 | ||
05d1247b | 1837 | int |
e87a358a | 1838 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1839 | { |
b32dd47e | 1840 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1841 | } |
1842 | ||
9e353e3b | 1843 | void |
e87a358a | 1844 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1845 | { |
b32dd47e | 1846 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1847 | } |
1848 | ||
9e353e3b | 1849 | void |
e87a358a | 1850 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1851 | { |
b32dd47e | 1852 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1853 | } |
1854 | ||
4ec2216f | 1855 | |
9e353e3b | 1856 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1857 | /* |
71200d45 | 1858 | * utf8 and raw dummy layers |
14a5cf38 | 1859 | */ |
dfebf958 | 1860 | |
26fb694e | 1861 | IV |
2dc2558e | 1862 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1863 | { |
96a5add6 | 1864 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1865 | PERL_UNUSED_ARG(mode); |
1866 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1867 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1868 | if (tab->kind & PERLIO_K_UTF8) |
1869 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1870 | else | |
1871 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1872 | return 0; | |
1873 | } | |
1874 | return -1; | |
26fb694e NIS |
1875 | } |
1876 | ||
27da23d5 | 1877 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1878 | sizeof(PerlIO_funcs), |
14a5cf38 | 1879 | "utf8", |
2dc2558e | 1880 | 0, |
6874a2de | 1881 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1882 | PerlIOUtf8_pushed, |
1883 | NULL, | |
1884 | NULL, | |
1885 | NULL, | |
1886 | NULL, | |
1887 | NULL, | |
1888 | NULL, | |
1889 | NULL, | |
1890 | NULL, | |
1891 | NULL, | |
1892 | NULL, | |
de009b76 AL |
1893 | NULL, |
1894 | NULL, | |
22569500 NIS |
1895 | NULL, /* flush */ |
1896 | NULL, /* fill */ | |
14a5cf38 JH |
1897 | NULL, |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
22569500 NIS |
1901 | NULL, /* get_base */ |
1902 | NULL, /* get_bufsiz */ | |
1903 | NULL, /* get_ptr */ | |
1904 | NULL, /* get_cnt */ | |
1905 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1906 | }; |
1907 | ||
27da23d5 | 1908 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1909 | sizeof(PerlIO_funcs), |
14a5cf38 | 1910 | "bytes", |
2dc2558e | 1911 | 0, |
14a5cf38 JH |
1912 | PERLIO_K_DUMMY, |
1913 | PerlIOUtf8_pushed, | |
1914 | NULL, | |
1915 | NULL, | |
1916 | NULL, | |
1917 | NULL, | |
1918 | NULL, | |
1919 | NULL, | |
1920 | NULL, | |
1921 | NULL, | |
1922 | NULL, | |
1923 | NULL, | |
de009b76 AL |
1924 | NULL, |
1925 | NULL, | |
22569500 NIS |
1926 | NULL, /* flush */ |
1927 | NULL, /* fill */ | |
14a5cf38 JH |
1928 | NULL, |
1929 | NULL, | |
1930 | NULL, | |
1931 | NULL, | |
22569500 NIS |
1932 | NULL, /* get_base */ |
1933 | NULL, /* get_bufsiz */ | |
1934 | NULL, /* get_ptr */ | |
1935 | NULL, /* get_cnt */ | |
1936 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1937 | }; |
1938 | ||
1939 | PerlIO * | |
14a5cf38 JH |
1940 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1941 | IV n, const char *mode, int fd, int imode, int perm, | |
1942 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1943 | { |
8772537c AL |
1944 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1945 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1946 | if (tab && tab->Open) |
1947 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1948 | old, narg, args); | |
1949 | SETERRNO(EINVAL, LIB_INVARG); | |
1950 | return NULL; | |
dfebf958 NIS |
1951 | } |
1952 | ||
27da23d5 | 1953 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1954 | sizeof(PerlIO_funcs), |
14a5cf38 | 1955 | "raw", |
2dc2558e | 1956 | 0, |
14a5cf38 JH |
1957 | PERLIO_K_DUMMY, |
1958 | PerlIORaw_pushed, | |
1959 | PerlIOBase_popped, | |
1960 | PerlIORaw_open, | |
1961 | NULL, | |
1962 | NULL, | |
1963 | NULL, | |
1964 | NULL, | |
1965 | NULL, | |
1966 | NULL, | |
1967 | NULL, | |
1968 | NULL, | |
de009b76 AL |
1969 | NULL, |
1970 | NULL, | |
22569500 NIS |
1971 | NULL, /* flush */ |
1972 | NULL, /* fill */ | |
14a5cf38 JH |
1973 | NULL, |
1974 | NULL, | |
1975 | NULL, | |
1976 | NULL, | |
22569500 NIS |
1977 | NULL, /* get_base */ |
1978 | NULL, /* get_bufsiz */ | |
1979 | NULL, /* get_ptr */ | |
1980 | NULL, /* get_cnt */ | |
1981 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1982 | }; |
1983 | /*--------------------------------------------------------------------------------------*/ | |
1984 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1985 | /* |
71200d45 | 1986 | * "Methods" of the "base class" |
14a5cf38 | 1987 | */ |
9e353e3b NIS |
1988 | |
1989 | IV | |
f62ce20a | 1990 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1991 | { |
04892f78 | 1992 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1993 | } |
1994 | ||
f5b9d040 | 1995 | char * |
81428673 | 1996 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1997 | { |
1998 | char *s = buf; | |
81428673 | 1999 | if (PerlIOValid(f)) { |
de009b76 | 2000 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2001 | if (flags & PERLIO_F_APPEND) { |
2002 | *s++ = 'a'; | |
2003 | if (flags & PERLIO_F_CANREAD) { | |
2004 | *s++ = '+'; | |
2005 | } | |
14a5cf38 | 2006 | } |
81428673 NIS |
2007 | else if (flags & PERLIO_F_CANREAD) { |
2008 | *s++ = 'r'; | |
2009 | if (flags & PERLIO_F_CANWRITE) | |
2010 | *s++ = '+'; | |
2011 | } | |
2012 | else if (flags & PERLIO_F_CANWRITE) { | |
2013 | *s++ = 'w'; | |
2014 | if (flags & PERLIO_F_CANREAD) { | |
2015 | *s++ = '+'; | |
2016 | } | |
14a5cf38 | 2017 | } |
35990314 | 2018 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2019 | if (!(flags & PERLIO_F_CRLF)) |
2020 | *s++ = 'b'; | |
5f1a76d0 | 2021 | #endif |
81428673 | 2022 | } |
14a5cf38 JH |
2023 | *s = '\0'; |
2024 | return buf; | |
f5b9d040 NIS |
2025 | } |
2026 | ||
81428673 | 2027 | |
76ced9ad | 2028 | IV |
2dc2558e | 2029 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2030 | { |
de009b76 | 2031 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2032 | PERL_UNUSED_CONTEXT; |
8772537c | 2033 | PERL_UNUSED_ARG(arg); |
de009b76 | 2034 | |
14a5cf38 JH |
2035 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2036 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2037 | if (tab->Set_ptrcnt != NULL) | |
2038 | l->flags |= PERLIO_F_FASTGETS; | |
2039 | if (mode) { | |
3b6c1aba | 2040 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2041 | mode++; |
2042 | switch (*mode++) { | |
2043 | case 'r': | |
2044 | l->flags |= PERLIO_F_CANREAD; | |
2045 | break; | |
2046 | case 'a': | |
2047 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2048 | break; | |
2049 | case 'w': | |
2050 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2051 | break; | |
2052 | default: | |
93189314 | 2053 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2054 | return -1; |
2055 | } | |
2056 | while (*mode) { | |
2057 | switch (*mode++) { | |
2058 | case '+': | |
2059 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2060 | break; | |
2061 | case 'b': | |
2062 | l->flags &= ~PERLIO_F_CRLF; | |
2063 | break; | |
2064 | case 't': | |
2065 | l->flags |= PERLIO_F_CRLF; | |
2066 | break; | |
2067 | default: | |
93189314 | 2068 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2069 | return -1; |
2070 | } | |
2071 | } | |
2072 | } | |
2073 | else { | |
2074 | if (l->next) { | |
2075 | l->flags |= l->next->flags & | |
2076 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2077 | PERLIO_F_APPEND); | |
2078 | } | |
2079 | } | |
5e2ab84b | 2080 | #if 0 |
14a5cf38 | 2081 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2082 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2083 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2084 | #endif |
14a5cf38 | 2085 | return 0; |
76ced9ad NIS |
2086 | } |
2087 | ||
2088 | IV | |
f62ce20a | 2089 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2090 | { |
96a5add6 | 2091 | PERL_UNUSED_CONTEXT; |
8772537c | 2092 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2093 | return 0; |
760ac839 LW |
2094 | } |
2095 | ||
9e353e3b | 2096 | SSize_t |
f62ce20a | 2097 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2098 | { |
14a5cf38 | 2099 | /* |
71200d45 | 2100 | * Save the position as current head considers it |
14a5cf38 | 2101 | */ |
de009b76 | 2102 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2103 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2104 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2105 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2106 | } |
2107 | ||
f6c77cf1 | 2108 | SSize_t |
f62ce20a | 2109 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2110 | { |
14a5cf38 JH |
2111 | STDCHAR *buf = (STDCHAR *) vbuf; |
2112 | if (f) { | |
263df5f1 JH |
2113 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2114 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2115 | SETERRNO(EBADF, SS_IVCHAN); | |
2116 | return 0; | |
2117 | } | |
14a5cf38 | 2118 | while (count > 0) { |
93c2c2ec IZ |
2119 | get_cnt: |
2120 | { | |
14a5cf38 JH |
2121 | SSize_t avail = PerlIO_get_cnt(f); |
2122 | SSize_t take = 0; | |
2123 | if (avail > 0) | |
bb7a0f54 | 2124 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2125 | if (take > 0) { |
2126 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2127 | Copy(ptr, buf, take, STDCHAR); | |
2128 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2129 | count -= take; | |
2130 | buf += take; | |
93c2c2ec IZ |
2131 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2132 | goto get_cnt; | |
14a5cf38 JH |
2133 | } |
2134 | if (count > 0 && avail <= 0) { | |
2135 | if (PerlIO_fill(f) != 0) | |
2136 | break; | |
2137 | } | |
93c2c2ec | 2138 | } |
14a5cf38 JH |
2139 | } |
2140 | return (buf - (STDCHAR *) vbuf); | |
2141 | } | |
f6c77cf1 | 2142 | return 0; |
f6c77cf1 NIS |
2143 | } |
2144 | ||
9e353e3b | 2145 | IV |
f62ce20a | 2146 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2147 | { |
96a5add6 | 2148 | PERL_UNUSED_CONTEXT; |
8772537c | 2149 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2150 | return 0; |
9e353e3b NIS |
2151 | } |
2152 | ||
2153 | IV | |
f62ce20a | 2154 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2155 | { |
96a5add6 | 2156 | PERL_UNUSED_CONTEXT; |
8772537c | 2157 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2158 | return -1; |
06da4f11 NIS |
2159 | } |
2160 | ||
2161 | IV | |
f62ce20a | 2162 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2163 | { |
37725cdc NIS |
2164 | IV code = -1; |
2165 | if (PerlIOValid(f)) { | |
2166 | PerlIO *n = PerlIONext(f); | |
2167 | code = PerlIO_flush(f); | |
2168 | PerlIOBase(f)->flags &= | |
2169 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2170 | while (PerlIOValid(n)) { | |
de009b76 | 2171 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2172 | if (tab && tab->Close) { |
2173 | if ((*tab->Close)(aTHX_ n) != 0) | |
2174 | code = -1; | |
2175 | break; | |
2176 | } | |
2177 | else { | |
2178 | PerlIOBase(n)->flags &= | |
2179 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2180 | } | |
2181 | n = PerlIONext(n); | |
2182 | } | |
2183 | } | |
2184 | else { | |
2185 | SETERRNO(EBADF, SS_IVCHAN); | |
2186 | } | |
14a5cf38 | 2187 | return code; |
9e353e3b NIS |
2188 | } |
2189 | ||
2190 | IV | |
f62ce20a | 2191 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2192 | { |
96a5add6 | 2193 | PERL_UNUSED_CONTEXT; |
04892f78 | 2194 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2195 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2196 | } | |
2197 | return 1; | |
9e353e3b NIS |
2198 | } |
2199 | ||
2200 | IV | |
f62ce20a | 2201 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2202 | { |
96a5add6 | 2203 | PERL_UNUSED_CONTEXT; |
04892f78 | 2204 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2205 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2206 | } | |
2207 | return 1; | |
9e353e3b NIS |
2208 | } |
2209 | ||
2210 | void | |
f62ce20a | 2211 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2212 | { |
04892f78 | 2213 | if (PerlIOValid(f)) { |
dcda55fc | 2214 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2215 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2216 | if (PerlIOValid(n)) |
14a5cf38 JH |
2217 | PerlIO_clearerr(n); |
2218 | } | |
9e353e3b NIS |
2219 | } |
2220 | ||
2221 | void | |
f62ce20a | 2222 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2223 | { |
96a5add6 | 2224 | PERL_UNUSED_CONTEXT; |
04892f78 | 2225 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2226 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2227 | } | |
9e353e3b NIS |
2228 | } |
2229 | ||
93a8090d NIS |
2230 | SV * |
2231 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2232 | { | |
2233 | if (!arg) | |
a0714e2c | 2234 | return NULL; |
93a8090d NIS |
2235 | #ifdef sv_dup |
2236 | if (param) { | |
a951d81d BL |
2237 | arg = sv_dup(arg, param); |
2238 | SvREFCNT_inc_simple_void_NN(arg); | |
2239 | return arg; | |
93a8090d NIS |
2240 | } |
2241 | else { | |
2242 | return newSVsv(arg); | |
2243 | } | |
2244 | #else | |
1b6737cc | 2245 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2246 | return newSVsv(arg); |
2247 | #endif | |
2248 | } | |
2249 | ||
2250 | PerlIO * | |
ecdeb87c | 2251 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2252 | { |
1b6737cc | 2253 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2254 | if (PerlIOValid(nexto)) { |
de009b76 | 2255 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2256 | if (tab && tab->Dup) |
2257 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2258 | else | |
2259 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2260 | } |
2261 | if (f) { | |
dcda55fc | 2262 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2263 | SV *arg = NULL; |
93a8090d | 2264 | char buf[8]; |
fe5a182c JH |
2265 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2266 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2267 | if (self->Getarg) |
2268 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2269 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2270 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2271 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
ef8d46e8 | 2272 | SvREFCNT_dec(arg); |
93a8090d NIS |
2273 | } |
2274 | return f; | |
2275 | } | |
2276 | ||
27da23d5 | 2277 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2278 | |
8b84d7dd | 2279 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2280 | static void |
2281 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2282 | dVAR; |
22c96fc1 | 2283 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2284 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2285 | int *new_array; |
2286 | ||
2287 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2288 | old_max, new_fd, new_max); | |
2289 | ||
2290 | if (new_fd < old_max) { | |
2291 | return; | |
2292 | } | |
2293 | ||
f4ae5be6 NC |
2294 | assert (new_max > new_fd); |
2295 | ||
eae082a0 JH |
2296 | /* Use plain realloc() since we need this memory to be really |
2297 | * global and visible to all the interpreters and/or threads. */ | |
2298 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2299 | |
2300 | if (!new_array) { | |
8b84d7dd | 2301 | #ifdef USE_ITHREADS |
6cb8cb21 | 2302 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2303 | #endif |
2304 | /* Can't use PerlIO to write as it allocates memory */ | |
2305 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2306 | PL_no_mem, strlen(PL_no_mem)); | |
2307 | my_exit(1); | |
2308 | } | |
2309 | ||
2310 | PL_perlio_fd_refcnt_size = new_max; | |
2311 | PL_perlio_fd_refcnt = new_array; | |
2312 | ||
95b63a38 JH |
2313 | PerlIO_debug("Zeroing %p, %d\n", |
2314 | (void*)(new_array + old_max), | |
2315 | new_max - old_max); | |
22c96fc1 NC |
2316 | |
2317 | Zero(new_array + old_max, new_max - old_max, int); | |
2318 | } | |
2319 | ||
2320 | ||
93a8090d NIS |
2321 | void |
2322 | PerlIO_init(pTHX) | |
2323 | { | |
8b84d7dd | 2324 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2325 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2326 | } |
2327 | ||
168d5872 NIS |
2328 | void |
2329 | PerlIOUnix_refcnt_inc(int fd) | |
2330 | { | |
27da23d5 | 2331 | dTHX; |
22c96fc1 | 2332 | if (fd >= 0) { |
97aff369 | 2333 | dVAR; |
22c96fc1 | 2334 | |
8b84d7dd | 2335 | #ifdef USE_ITHREADS |
6cb8cb21 | 2336 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2337 | #endif |
22c96fc1 NC |
2338 | if (fd >= PL_perlio_fd_refcnt_size) |
2339 | S_more_refcounted_fds(aTHX_ fd); | |
2340 | ||
27da23d5 | 2341 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd RGS |
2342 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
2343 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2344 | fd, PL_perlio_fd_refcnt[fd]); | |
2345 | } | |
2346 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2347 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2348 | |
8b84d7dd | 2349 | #ifdef USE_ITHREADS |
6cb8cb21 | 2350 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2351 | #endif |
8b84d7dd RGS |
2352 | } else { |
2353 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2354 | } |
2355 | } | |
2356 | ||
168d5872 NIS |
2357 | int |
2358 | PerlIOUnix_refcnt_dec(int fd) | |
2359 | { | |
27da23d5 | 2360 | dTHX; |
168d5872 | 2361 | int cnt = 0; |
22c96fc1 | 2362 | if (fd >= 0) { |
97aff369 | 2363 | dVAR; |
8b84d7dd | 2364 | #ifdef USE_ITHREADS |
6cb8cb21 | 2365 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2366 | #endif |
8b84d7dd RGS |
2367 | if (fd >= PL_perlio_fd_refcnt_size) { |
2368 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", | |
2369 | fd, PL_perlio_fd_refcnt_size); | |
2370 | } | |
2371 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2372 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", | |
2373 | fd, PL_perlio_fd_refcnt[fd]); | |
2374 | } | |
27da23d5 | 2375 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2376 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2377 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2378 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2379 | #endif |
8b84d7dd RGS |
2380 | } else { |
2381 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2382 | } |
2383 | return cnt; | |
2384 | } | |
2385 | ||
694c95cf JH |
2386 | void |
2387 | PerlIO_cleanup(pTHX) | |
2388 | { | |
97aff369 | 2389 | dVAR; |
694c95cf JH |
2390 | int i; |
2391 | #ifdef USE_ITHREADS | |
a25429c6 | 2392 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2393 | #else |
2394 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2395 | #endif |
e47547a8 | 2396 | |
694c95cf JH |
2397 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2398 | for (i=0; i < 3; i++) | |
2399 | PerlIOUnix_refcnt_inc(i); | |
2400 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2401 | /* Restore STDIN..STDERR refcount */ | |
2402 | for (i=0; i < 3; i++) | |
2403 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2404 | |
2405 | if (PL_known_layers) { | |
2406 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2407 | PL_known_layers = NULL; | |
2408 | } | |
27da23d5 | 2409 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2410 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2411 | PL_def_layerlist = NULL; | |
2412 | } | |
6cb8cb21 RGS |
2413 | } |
2414 | ||
0934c9d9 | 2415 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2416 | { |
53d44271 | 2417 | dVAR; |
4f3da17a DM |
2418 | #if 0 |
2419 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2420 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2421 | being present (at least in win32) :-(. | |
2422 | Disable for now. | |
2423 | */ | |
6cb8cb21 RGS |
2424 | #ifdef DEBUGGING |
2425 | { | |
2426 | /* By now all filehandles should have been closed, so any | |
2427 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2428 | * errors. */ | |
77db880c JH |
2429 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2430 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2431 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2432 | int i; |
2433 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2434 | if (PL_perlio_fd_refcnt[i]) { |
2435 | const STRLEN len = | |
2436 | my_snprintf(buf, sizeof(buf), | |
2437 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2438 | i, PL_perlio_fd_refcnt[i]); | |
2439 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2440 | } | |
6cb8cb21 RGS |
2441 | } |
2442 | } | |
2443 | #endif | |
4f3da17a | 2444 | #endif |
eae082a0 JH |
2445 | /* Not bothering with PL_perlio_mutex since by now |
2446 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2447 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2448 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2449 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2450 | PL_perlio_fd_refcnt = NULL; |
2451 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2452 | } |
694c95cf JH |
2453 | } |
2454 | ||
9e353e3b | 2455 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2456 | /* |
71200d45 | 2457 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2458 | */ |
9e353e3b | 2459 | |
14a5cf38 | 2460 | typedef struct { |
22569500 NIS |
2461 | struct _PerlIO base; /* The generic part */ |
2462 | int fd; /* UNIX like file descriptor */ | |
2463 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2464 | } PerlIOUnix; |
2465 | ||
6f9d8c32 | 2466 | int |
9e353e3b | 2467 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2468 | { |
14a5cf38 | 2469 | int oflags = -1; |
3b6c1aba | 2470 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2471 | mode++; |
2472 | switch (*mode) { | |
2473 | case 'r': | |
2474 | oflags = O_RDONLY; | |
2475 | if (*++mode == '+') { | |
2476 | oflags = O_RDWR; | |
2477 | mode++; | |
2478 | } | |
2479 | break; | |
2480 | ||
2481 | case 'w': | |
2482 | oflags = O_CREAT | O_TRUNC; | |
2483 | if (*++mode == '+') { | |
2484 | oflags |= O_RDWR; | |
2485 | mode++; | |
2486 | } | |
2487 | else | |
2488 | oflags |= O_WRONLY; | |
2489 | break; | |
2490 | ||
2491 | case 'a': | |
2492 | oflags = O_CREAT | O_APPEND; | |
2493 | if (*++mode == '+') { | |
2494 | oflags |= O_RDWR; | |
2495 | mode++; | |
2496 | } | |
2497 | else | |
2498 | oflags |= O_WRONLY; | |
2499 | break; | |
2500 | } | |
2501 | if (*mode == 'b') { | |
2502 | oflags |= O_BINARY; | |
2503 | oflags &= ~O_TEXT; | |
2504 | mode++; | |
2505 | } | |
2506 | else if (*mode == 't') { | |
2507 | oflags |= O_TEXT; | |
2508 | oflags &= ~O_BINARY; | |
2509 | mode++; | |
2510 | } | |
2511 | /* | |
71200d45 | 2512 | * Always open in binary mode |
14a5cf38 JH |
2513 | */ |
2514 | oflags |= O_BINARY; | |
2515 | if (*mode || oflags == -1) { | |
93189314 | 2516 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2517 | oflags = -1; |
2518 | } | |
2519 | return oflags; | |
9e353e3b NIS |
2520 | } |
2521 | ||
2522 | IV | |
f62ce20a | 2523 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2524 | { |
96a5add6 | 2525 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2526 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2527 | } |
2528 | ||
aa063c35 NIS |
2529 | static void |
2530 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2531 | { |
de009b76 | 2532 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2533 | #if defined(WIN32) |
aa063c35 NIS |
2534 | Stat_t st; |
2535 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2536 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2537 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2538 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2539 | } | |
aa063c35 NIS |
2540 | else { |
2541 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2542 | } | |
6caa5a9c NIS |
2543 | } |
2544 | #endif | |
aa063c35 NIS |
2545 | s->fd = fd; |
2546 | s->oflags = imode; | |
2547 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2548 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2549 | } |
2550 | ||
2551 | IV | |
2552 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2553 | { | |
2554 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2555 | if (*PerlIONext(f)) { |
4b069b44 | 2556 | /* We never call down so do any pending stuff now */ |
03c0554d | 2557 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2558 | /* |
71200d45 | 2559 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2560 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2561 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2562 | */ |
acbd16bf | 2563 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2564 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2565 | } |
2566 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2567 | |
14a5cf38 | 2568 | return code; |
4b803d04 NIS |
2569 | } |
2570 | ||
c2fcde81 JH |
2571 | IV |
2572 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2573 | { | |
de009b76 | 2574 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2575 | Off_t new_loc; |
96a5add6 | 2576 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2577 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2578 | #ifdef ESPIPE | |
2579 | SETERRNO(ESPIPE, LIB_INVARG); | |
2580 | #else | |
2581 | SETERRNO(EINVAL, LIB_INVARG); | |
2582 | #endif | |
2583 | return -1; | |
2584 | } | |
0723351e NC |
2585 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2586 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2587 | return -1; |
c2fcde81 JH |
2588 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2589 | return 0; | |
2590 | } | |
2591 | ||
9e353e3b | 2592 | PerlIO * |
14a5cf38 JH |
2593 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2594 | IV n, const char *mode, int fd, int imode, | |
2595 | int perm, PerlIO *f, int narg, SV **args) | |
2596 | { | |
d9dac8cd | 2597 | if (PerlIOValid(f)) { |
14a5cf38 | 2598 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2599 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2600 | } |
2601 | if (narg > 0) { | |
3b6c1aba | 2602 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2603 | mode++; |
2604 | else { | |
2605 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2606 | #ifdef VMS |
2607 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2608 | #else | |
14a5cf38 | 2609 | perm = 0666; |
5e2ce0f3 | 2610 | #endif |
14a5cf38 JH |
2611 | } |
2612 | if (imode != -1) { | |
e62f0680 | 2613 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2614 | fd = PerlLIO_open3(path, imode, perm); |
2615 | } | |
2616 | } | |
2617 | if (fd >= 0) { | |
3b6c1aba | 2618 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2619 | mode++; |
2620 | if (!f) { | |
2621 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2622 | } |
2623 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2624 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2625 | return NULL; | |
2626 | } | |
d9dac8cd | 2627 | } |
aa063c35 | 2628 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2629 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2630 | if (*mode == IoTYPE_APPEND) |
2631 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2632 | return f; |
2633 | } | |
2634 | else { | |
2635 | if (f) { | |
6f207bd3 | 2636 | NOOP; |
14a5cf38 | 2637 | /* |
71200d45 | 2638 | * FIXME: pop layers ??? |
14a5cf38 JH |
2639 | */ |
2640 | } | |
2641 | return NULL; | |
2642 | } | |
9e353e3b NIS |
2643 | } |
2644 | ||
71200d45 | 2645 | PerlIO * |
ecdeb87c | 2646 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2647 | { |
dcda55fc | 2648 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2649 | int fd = os->fd; |
ecdeb87c NIS |
2650 | if (flags & PERLIO_DUP_FD) { |
2651 | fd = PerlLIO_dup(fd); | |
2652 | } | |
22c96fc1 | 2653 | if (fd >= 0) { |
ecdeb87c | 2654 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2655 | if (f) { |
2656 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2657 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2658 | return f; |
2659 | } | |
71200d45 NIS |
2660 | } |
2661 | return NULL; | |
2662 | } | |
2663 | ||
2664 | ||
9e353e3b | 2665 | SSize_t |
f62ce20a | 2666 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2667 | { |
97aff369 | 2668 | dVAR; |
de009b76 | 2669 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2670 | #ifdef PERLIO_STD_SPECIAL |
2671 | if (fd == 0) | |
2672 | return PERLIO_STD_IN(fd, vbuf, count); | |
2673 | #endif | |
81428673 | 2674 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2675 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2676 | return 0; |
1fd8f4ce | 2677 | } |
14a5cf38 | 2678 | while (1) { |
b464bac0 | 2679 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2680 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2681 | if (len < 0) { |
2682 | if (errno != EAGAIN) { | |
2683 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2684 | } | |
2685 | } | |
2686 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2687 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2688 | SETERRNO(0,0); |
2689 | } | |
14a5cf38 JH |
2690 | return len; |
2691 | } | |
2692 | PERL_ASYNC_CHECK(); | |
2693 | } | |
b464bac0 | 2694 | /*NOTREACHED*/ |
9e353e3b NIS |
2695 | } |
2696 | ||
2697 | SSize_t | |
f62ce20a | 2698 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2699 | { |
97aff369 | 2700 | dVAR; |
de009b76 | 2701 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2702 | #ifdef PERLIO_STD_SPECIAL |
2703 | if (fd == 1 || fd == 2) | |
2704 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2705 | #endif | |
14a5cf38 | 2706 | while (1) { |
de009b76 | 2707 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2708 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2709 | if (len < 0) { |
2710 | if (errno != EAGAIN) { | |
2711 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2712 | } | |
2713 | } | |
14a5cf38 JH |
2714 | return len; |
2715 | } | |
2716 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2717 | } |
1b6737cc | 2718 | /*NOTREACHED*/ |
9e353e3b NIS |
2719 | } |
2720 | ||
9e353e3b | 2721 | Off_t |
f62ce20a | 2722 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2723 | { |
96a5add6 AL |
2724 | PERL_UNUSED_CONTEXT; |
2725 | ||
14a5cf38 | 2726 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2727 | } |
2728 | ||
2556f95e GF |
2729 | |
2730 | IV | |
2376d97d | 2731 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2732 | { |
97aff369 | 2733 | dVAR; |
de009b76 | 2734 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2735 | int code = 0; |
168d5872 NIS |
2736 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2737 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2738 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2739 | return 0; | |
22569500 | 2740 | } |
93a8090d NIS |
2741 | } |
2742 | else { | |
93189314 | 2743 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2744 | return -1; |
2745 | } | |
14a5cf38 JH |
2746 | while (PerlLIO_close(fd) != 0) { |
2747 | if (errno != EINTR) { | |
2748 | code = -1; | |
2749 | break; | |
2750 | } | |
2751 | PERL_ASYNC_CHECK(); | |
2752 | } | |
2753 | if (code == 0) { | |
2754 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2755 | } | |
2756 | return code; | |
9e353e3b NIS |
2757 | } |
2758 | ||
27da23d5 | 2759 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2760 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2761 | "unix", |
2762 | sizeof(PerlIOUnix), | |
2763 | PERLIO_K_RAW, | |
2764 | PerlIOUnix_pushed, | |
2376d97d | 2765 | PerlIOBase_popped, |
14a5cf38 | 2766 | PerlIOUnix_open, |
86e05cf2 | 2767 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2768 | NULL, |
2769 | PerlIOUnix_fileno, | |
71200d45 | 2770 | PerlIOUnix_dup, |
14a5cf38 JH |
2771 | PerlIOUnix_read, |
2772 | PerlIOBase_unread, | |
2773 | PerlIOUnix_write, | |
2774 | PerlIOUnix_seek, | |
2775 | PerlIOUnix_tell, | |
2776 | PerlIOUnix_close, | |
22569500 NIS |
2777 | PerlIOBase_noop_ok, /* flush */ |
2778 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2779 | PerlIOBase_eof, |
2780 | PerlIOBase_error, | |
2781 | PerlIOBase_clearerr, | |
2782 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2783 | NULL, /* get_base */ |
2784 | NULL, /* get_bufsiz */ | |
2785 | NULL, /* get_ptr */ | |
2786 | NULL, /* get_cnt */ | |
2787 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2788 | }; |
2789 | ||
2790 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2791 | /* |
71200d45 | 2792 | * stdio as a layer |
14a5cf38 | 2793 | */ |
9e353e3b | 2794 | |
313e59c8 NIS |
2795 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2796 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2797 | broken by the last second glibc 2.3 fix | |
2798 | */ | |
2799 | #define STDIO_BUFFER_WRITABLE | |
2800 | #endif | |
2801 | ||
2802 | ||
14a5cf38 JH |
2803 | typedef struct { |
2804 | struct _PerlIO base; | |
22569500 | 2805 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2806 | } PerlIOStdio; |
2807 | ||
2808 | IV | |
f62ce20a | 2809 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2810 | { |
96a5add6 AL |
2811 | PERL_UNUSED_CONTEXT; |
2812 | ||
c4420975 AL |
2813 | if (PerlIOValid(f)) { |
2814 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2815 | if (s) | |
2816 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2817 | } |
2818 | errno = EBADF; | |
2819 | return -1; | |
9e353e3b NIS |
2820 | } |
2821 | ||
766a733e | 2822 | char * |
14a5cf38 JH |
2823 | PerlIOStdio_mode(const char *mode, char *tmode) |
2824 | { | |
de009b76 | 2825 | char * const ret = tmode; |
a0625d38 SR |
2826 | if (mode) { |
2827 | while (*mode) { | |
2828 | *tmode++ = *mode++; | |
2829 | } | |
14a5cf38 | 2830 | } |
95005ad8 | 2831 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2832 | *tmode++ = 'b'; |
2833 | #endif | |
14a5cf38 JH |
2834 | *tmode = '\0'; |
2835 | return ret; | |
2836 | } | |
2837 | ||
4b803d04 | 2838 | IV |
2dc2558e | 2839 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2840 | { |
1fd8f4ce NIS |
2841 | PerlIO *n; |
2842 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2843 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2844 | if (toptab == tab) { |
2845 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2846 | PerlIO_pop(aTHX_ f); | |
2847 | return 0; | |
2848 | } else { | |
de009b76 | 2849 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2850 | char tmode[8]; |
2851 | FILE *stdio; | |
81428673 | 2852 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2853 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2854 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2855 | /* We never call down so do any pending stuff now */ | |
2856 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2857 | } |
1fd8f4ce NIS |
2858 | else { |
2859 | return -1; | |
2860 | } | |
2861 | } | |
14a5cf38 | 2862 | } |
2dc2558e | 2863 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2864 | } |
2865 | ||
22569500 | 2866 | |
9e353e3b | 2867 | PerlIO * |
4b069b44 | 2868 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2869 | { |
14a5cf38 JH |
2870 | dTHX; |
2871 | PerlIO *f = NULL; | |
2872 | if (stdio) { | |
22569500 | 2873 | PerlIOStdio *s; |
4b069b44 NIS |
2874 | if (!mode || !*mode) { |
2875 | /* We need to probe to see how we can open the stream | |
2876 | so start with read/write and then try write and read | |
2877 | we dup() so that we can fclose without loosing the fd. | |
2878 | ||
2879 | Note that the errno value set by a failing fdopen | |
2880 | varies between stdio implementations. | |
2881 | */ | |
de009b76 | 2882 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2883 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2884 | if (!f2) { |
a33cf58c | 2885 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2886 | } |
2887 | if (!f2) { | |
a33cf58c | 2888 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2889 | } |
2890 | if (!f2) { | |
2891 | /* Don't seem to be able to open */ | |
2892 | PerlLIO_close(fd); | |
2893 | return f; | |
2894 | } | |
2895 | fclose(f2); | |
22569500 | 2896 | } |
a0714e2c | 2897 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2898 | s = PerlIOSelf(f, PerlIOStdio); |
2899 | s->stdio = stdio; | |
c586124f | 2900 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2901 | } |
14a5cf38 JH |
2902 | } |
2903 | return f; | |
9e353e3b NIS |
2904 | } |
2905 | ||
2906 | PerlIO * | |
14a5cf38 JH |
2907 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2908 | IV n, const char *mode, int fd, int imode, | |
2909 | int perm, PerlIO *f, int narg, SV **args) | |
2910 | { | |
2911 | char tmode[8]; | |
d9dac8cd | 2912 | if (PerlIOValid(f)) { |
dcda55fc AL |
2913 | const char * const path = SvPV_nolen_const(*args); |
2914 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2915 | FILE *stdio; |
2916 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2917 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2918 | s->stdio); |
2919 | if (!s->stdio) | |
2920 | return NULL; | |
2921 | s->stdio = stdio; | |
1751d015 | 2922 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2923 | return f; |
2924 | } | |
2925 | else { | |
2926 | if (narg > 0) { | |
dcda55fc | 2927 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2928 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2929 | mode++; |
2930 | fd = PerlLIO_open3(path, imode, perm); | |
2931 | } | |
2932 | else { | |
95005ad8 GH |
2933 | FILE *stdio; |
2934 | bool appended = FALSE; | |
2935 | #ifdef __CYGWIN__ | |
2936 | /* Cygwin wants its 'b' early. */ | |
2937 | appended = TRUE; | |
2938 | mode = PerlIOStdio_mode(mode, tmode); | |
2939 | #endif | |
2940 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2941 | if (stdio) { |
6f0313ac JH |
2942 | if (!f) { |
2943 | f = PerlIO_allocate(aTHX); | |
2944 | } | |
95005ad8 GH |
2945 | if (!appended) |
2946 | mode = PerlIOStdio_mode(mode, tmode); | |
2947 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2948 | if (f) { | |
0f0f9e2b JH |
2949 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2950 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
2951 | } else { | |
2952 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
2953 | } |
2954 | return f; | |
2955 | } | |
2956 | else { | |
2957 | return NULL; | |
2958 | } | |
14a5cf38 JH |
2959 | } |
2960 | } | |
2961 | if (fd >= 0) { | |
2962 | FILE *stdio = NULL; | |
2963 | int init = 0; | |
3b6c1aba | 2964 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2965 | init = 1; |
2966 | mode++; | |
2967 | } | |
2968 | if (init) { | |
2969 | switch (fd) { | |
2970 | case 0: | |
2971 | stdio = PerlSIO_stdin; | |
2972 | break; | |
2973 | case 1: | |
2974 | stdio = PerlSIO_stdout; | |
2975 | break; | |
2976 | case 2: | |
2977 | stdio = PerlSIO_stderr; | |
2978 | break; | |
2979 | } | |
2980 | } | |
2981 | else { | |
2982 | stdio = PerlSIO_fdopen(fd, mode = | |
2983 | PerlIOStdio_mode(mode, tmode)); | |
2984 | } | |
2985 | if (stdio) { | |
d9dac8cd NIS |
2986 | if (!f) { |
2987 | f = PerlIO_allocate(aTHX); | |
2988 | } | |
a33cf58c | 2989 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
2990 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2991 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 2992 | } |
14a5cf38 JH |
2993 | return f; |
2994 | } | |
2995 | } | |
2996 | } | |
ee518936 | 2997 | return NULL; |
9e353e3b NIS |
2998 | } |
2999 | ||
1751d015 | 3000 | PerlIO * |
ecdeb87c | 3001 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3002 | { |
3003 | /* This assumes no layers underneath - which is what | |
3004 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3005 | */ | |
ecdeb87c | 3006 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3007 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3008 | const int fd = fileno(stdio); |
9217ff3f | 3009 | char mode[8]; |
ecdeb87c | 3010 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3011 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3012 | if (dfd >= 0) { |
3013 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3014 | goto set_this; | |
ecdeb87c NIS |
3015 | } |
3016 | else { | |
6f207bd3 | 3017 | NOOP; |
ecdeb87c NIS |
3018 | /* FIXME: To avoid messy error recovery if dup fails |
3019 | re-use the existing stdio as though flag was not set | |
3020 | */ | |
3021 | } | |
3022 | } | |
9217ff3f NIS |
3023 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3024 | set_this: | |
694c95cf | 3025 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3026 | if(stdio) { |
3027 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3028 | } | |
1751d015 NIS |
3029 | } |
3030 | return f; | |
3031 | } | |
3032 | ||
0d7a5398 NIS |
3033 | static int |
3034 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3035 | { | |
96a5add6 AL |
3036 | PERL_UNUSED_CONTEXT; |
3037 | ||
0d7a5398 | 3038 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3039 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3040 | */ |
ef8eacb8 AT |
3041 | # if defined(__UCLIBC__) |
3042 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3043 | f->__filedes = -1; | |
3044 | return 1; | |
3045 | # elif defined(__GLIBC__) | |
0d7a5398 | 3046 | /* There may be a better way for GLIBC: |
37725cdc | 3047 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3048 | */ |
3049 | f->_fileno = -1; | |
3050 | return 1; | |
3051 | # elif defined(__sun__) | |
f5992bc4 | 3052 | PERL_UNUSED_ARG(f); |
cfedb851 | 3053 | return 0; |
0d7a5398 NIS |
3054 | # elif defined(__hpux) |
3055 | f->__fileH = 0xff; | |
3056 | f->__fileL = 0xff; | |
3057 | return 1; | |
9837d373 | 3058 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3059 | your platform does not have special entry try this one. |
9837d373 NIS |
3060 | [For OSF only have confirmation for Tru64 (alpha) |
3061 | but assume other OSFs will be similar.] | |
37725cdc | 3062 | */ |
9837d373 | 3063 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3064 | f->_file = -1; |
3065 | return 1; | |
3066 | # elif defined(__FreeBSD__) | |
3067 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3068 | - we could insert a dummy func in the _close function entry |
3069 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3070 | */ |
3071 | f->_file = -1; | |
0c49ea6a SU |
3072 | return 1; |
3073 | # elif defined(__OpenBSD__) | |
3074 | /* There may be a better way on OpenBSD: | |
3075 | - we could insert a dummy func in the _close function entry | |
3076 | f->_close = (int (*)(void *)) dummy_close; | |
3077 | */ | |
3078 | f->_file = -1; | |
0d7a5398 | 3079 | return 1; |
59ad941d IZ |
3080 | # elif defined(__EMX__) |
3081 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3082 | f->_handle = -1; | |
3083 | return 1; | |
0d7a5398 NIS |
3084 | # elif defined(__CYGWIN__) |
3085 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3086 | - we could insert a dummy func in the _close function entry |
3087 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3088 | */ |
3089 | f->_file = -1; | |
3090 | return 1; | |
3091 | # elif defined(WIN32) | |
3092 | # if defined(__BORLANDC__) | |
3093 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3094 | # elif defined(UNDER_CE) |
3095 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3096 | structure at all | |
3097 | */ | |
0d7a5398 NIS |
3098 | # else |
3099 | f->_file = -1; | |
3100 | # endif | |
3101 | return 1; | |
3102 | # else | |
3103 | #if 0 | |
37725cdc | 3104 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3105 | (which isn't thread safe) instead |
37725cdc | 3106 | */ |
0d7a5398 NIS |
3107 | # error "Don't know how to set FILE.fileno on your platform" |
3108 | #endif | |
8772537c | 3109 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3110 | return 0; |
3111 | # endif | |
3112 | } | |
3113 | ||
1751d015 | 3114 | IV |
f62ce20a | 3115 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3116 | { |
c4420975 | 3117 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3118 | if (!stdio) { |
3119 | errno = EBADF; | |
3120 | return -1; | |
3121 | } | |
9217ff3f | 3122 | else { |
de009b76 | 3123 | const int fd = fileno(stdio); |
0d7a5398 | 3124 | int invalidate = 0; |
bbfd922f | 3125 | IV result = 0; |
1d791a44 | 3126 | int dupfd = -1; |
4ee39169 | 3127 | dSAVEDERRNO; |
a2e578da MHM |
3128 | #ifdef USE_ITHREADS |
3129 | dVAR; | |
3130 | #endif | |
0d7a5398 | 3131 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3132 | /* Socks lib overrides close() but stdio isn't linked to |
3133 | that library (though we are) - so we must call close() | |
3134 | on sockets on stdio's behalf. | |
3135 | */ | |
0d7a5398 NIS |
3136 | int optval; |
3137 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3138 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3139 | invalidate = 1; |
0d7a5398 | 3140 | #endif |
d8723f43 NC |
3141 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3142 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3143 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3144 | trying to close an already closed handle which somehow it still has | |
3145 | a reference to. (via.xs, I'm looking at you). */ | |
3146 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3147 | /* File descriptor still in use */ | |
0d7a5398 | 3148 | invalidate = 1; |
d8723f43 | 3149 | } |
0d7a5398 | 3150 | if (invalidate) { |
6b4ce6c8 AL |
3151 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3152 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3153 | return 0; | |
3154 | if (stdio == stdout || stdio == stderr) | |
3155 | return PerlIO_flush(f); | |
37725cdc NIS |
3156 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3157 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3158 | fileno slot of the FILE * | |
3159 | */ | |
bbfd922f | 3160 | result = PerlIO_flush(f); |
4ee39169 | 3161 | SAVE_ERRNO; |
6b4ce6c8 | 3162 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3163 | if (!invalidate) { |
9bab90c0 NC |
3164 | #ifdef USE_ITHREADS |
3165 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3166 | /* Right. We need a mutex here because for a brief while we |
3167 | will have the situation that fd is actually closed. Hence if | |
3168 | a second thread were to get into this block, its dup() would | |
3169 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3170 | Then if we get to the dup2() first, we blat the fd back |
3171 | (messing up its temporary as a side effect) only for it to | |
3172 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3173 | ||
3174 | /* There is, of course, a race condition, that any other thread | |
3175 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3176 | for the duration of this little manoeuvrer. Perhaps we |
3177 | should hold an IO mutex for the duration of every IO | |
3178 | operation if we know that invalidate doesn't work on this | |
3179 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3180 | |
3181 | Except that correctness trumps speed. | |
3182 | Advice from klortho #11912. */ | |
3183 | #endif | |
6b4ce6c8 | 3184 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3185 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3186 | if (dupfd < 0) { |
3187 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3188 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3189 | recover from here, or if closing this particular FILE * | |
3190 | is a good idea now. */ | |
3191 | } | |
3192 | #endif | |
3193 | } | |
94ccb807 JH |
3194 | } else { |
3195 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3196 | } |
0d7a5398 | 3197 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3198 | /* We treat error from stdio as success if we invalidated |
3199 | errno may NOT be expected EBADF | |
e8529473 NIS |
3200 | */ |
3201 | if (invalidate && result != 0) { | |
4ee39169 | 3202 | RESTORE_ERRNO; |
0d7a5398 | 3203 | result = 0; |
37725cdc | 3204 | } |
6b4ce6c8 AL |
3205 | #ifdef SOCKS5_VERSION_NAME |
3206 | /* in SOCKS' case, let close() determine return value */ | |
3207 | result = close(fd); | |
3208 | #endif | |
1d791a44 | 3209 | if (dupfd >= 0) { |
0d7a5398 | 3210 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3211 | PerlLIO_close(dupfd); |
711e8db2 | 3212 | #ifdef USE_ITHREADS |
9bab90c0 | 3213 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3214 | #endif |
9217ff3f NIS |
3215 | } |
3216 | return result; | |
37725cdc | 3217 | } |
1751d015 NIS |
3218 | } |
3219 | ||
9e353e3b | 3220 | SSize_t |
f62ce20a | 3221 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3222 | { |
97aff369 | 3223 | dVAR; |
c4420975 | 3224 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3225 | SSize_t got = 0; |
4d948241 NIS |
3226 | for (;;) { |
3227 | if (count == 1) { | |
3228 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3229 | /* | |
3230 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3231 | * stdio does not do that for fread() | |
3232 | */ | |
de009b76 | 3233 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3234 | if (ch != EOF) { |
3235 | *buf = ch; | |
3236 | got = 1; | |
3237 | } | |
14a5cf38 | 3238 | } |
4d948241 NIS |
3239 | else |
3240 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3241 | if (got == 0 && PerlSIO_ferror(s)) |
3242 | got = -1; | |
42a7a32f | 3243 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3244 | break; |
3245 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3246 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3247 | } |
14a5cf38 | 3248 | return got; |
9e353e3b NIS |
3249 | } |
3250 | ||
3251 | SSize_t | |
f62ce20a | 3252 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3253 | { |
14a5cf38 | 3254 | SSize_t unread = 0; |
c4420975 | 3255 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3256 | |
313e59c8 | 3257 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3258 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3259 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3260 | STDCHAR *base = PerlIO_get_base(f); | |
3261 | SSize_t cnt = PerlIO_get_cnt(f); | |
3262 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3263 | SSize_t avail = ptr - base; | |
3264 | if (avail > 0) { | |
3265 | if (avail > count) { | |
3266 | avail = count; | |
3267 | } | |
3268 | ptr -= avail; | |
3269 | Move(buf-avail,ptr,avail,STDCHAR); | |
3270 | count -= avail; | |
3271 | unread += avail; | |
3272 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3273 | if (PerlSIO_feof(s) && unread >= 0) |
3274 | PerlSIO_clearerr(s); | |
3275 | } | |
3276 | } | |
313e59c8 NIS |
3277 | else |
3278 | #endif | |
3279 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3280 | /* We can get pointer to buffer but not its base |
3281 | Do ungetc() but check chars are ending up in the | |
3282 | buffer | |
3283 | */ | |
3284 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3285 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3286 | while (count > 0) { | |
de009b76 | 3287 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3288 | if (ungetc(ch,s) != ch) { |
3289 | /* ungetc did not work */ | |
3290 | break; | |
3291 | } | |
3292 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3293 | /* Did not change pointer as expected */ | |
3294 | fgetc(s); /* get char back again */ | |
3295 | break; | |
3296 | } | |
3297 | /* It worked ! */ | |
3298 | count--; | |
3299 | unread++; | |
93679785 NIS |
3300 | } |
3301 | } | |
3302 | ||
3303 | if (count > 0) { | |
3304 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3305 | } |
3306 | return unread; | |
9e353e3b NIS |
3307 | } |
3308 | ||
3309 | SSize_t | |
f62ce20a | 3310 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3311 | { |
97aff369 | 3312 | dVAR; |
4d948241 NIS |
3313 | SSize_t got; |
3314 | for (;;) { | |
3315 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3316 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3317 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3318 | break; |
3319 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3320 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3321 | } |
3322 | return got; | |
9e353e3b NIS |
3323 | } |
3324 | ||
94a175e1 | 3325 | IV |
f62ce20a | 3326 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3327 | { |
c4420975 | 3328 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3329 | PERL_UNUSED_CONTEXT; |
3330 | ||
94a175e1 | 3331 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3332 | } |
3333 | ||
3334 | Off_t | |
f62ce20a | 3335 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3336 | { |
c4420975 | 3337 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3338 | PERL_UNUSED_CONTEXT; |
3339 | ||
94a175e1 | 3340 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3341 | } |
3342 | ||
3343 | IV | |
f62ce20a | 3344 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3345 | { |
c4420975 | 3346 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3347 | PERL_UNUSED_CONTEXT; |
3348 | ||
14a5cf38 JH |
3349 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3350 | return PerlSIO_fflush(stdio); | |
3351 | } | |
3352 | else { | |
6f207bd3 | 3353 | NOOP; |
88b61e10 | 3354 | #if 0 |
14a5cf38 JH |
3355 | /* |
3356 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3357 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3358 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3359 | * layer read-to-read |
14a5cf38 JH |
3360 | */ |
3361 | /* | |
71200d45 | 3362 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3363 | */ |
4ee39169 | 3364 | dSAVE_ERRNO; |
14a5cf38 | 3365 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3366 | RESTORE_ERRNO; |
88b61e10 | 3367 | #endif |
14a5cf38 JH |
3368 | } |
3369 | return 0; | |
9e353e3b NIS |
3370 | } |
3371 | ||
3372 | IV | |
f62ce20a | 3373 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3374 | { |
96a5add6 AL |
3375 | PERL_UNUSED_CONTEXT; |
3376 | ||
14a5cf38 | 3377 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3378 | } |
3379 | ||
3380 | IV | |
f62ce20a | 3381 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3382 | { |
96a5add6 AL |
3383 | PERL_UNUSED_CONTEXT; |
3384 | ||
263df5f1 | 3385 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3386 | } |
3387 | ||
3388 | void | |
f62ce20a | 3389 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3390 | { |
96a5add6 AL |
3391 | PERL_UNUSED_CONTEXT; |
3392 | ||
14a5cf38 | 3393 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3394 | } |
3395 | ||
3396 | void | |
f62ce20a | 3397 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3398 | { |
96a5add6 AL |
3399 | PERL_UNUSED_CONTEXT; |
3400 | ||
9e353e3b | 3401 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3402 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3403 | #else |
bd61b366 | 3404 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3405 | #endif |
3406 | } | |
3407 | ||
3408 | #ifdef FILE_base | |
3409 | STDCHAR * | |
f62ce20a | 3410 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3411 | { |
c4420975 | 3412 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3413 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3414 | } |
3415 | ||
3416 | Size_t | |
f62ce20a | 3417 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3418 | { |
c4420975 | 3419 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3420 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3421 | } |
3422 | #endif | |
3423 | ||
3424 | #ifdef USE_STDIO_PTR | |
3425 | STDCHAR * | |
f62ce20a | 3426 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3427 | { |
c4420975 | 3428 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3429 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3430 | } |
3431 | ||
3432 | SSize_t | |
f62ce20a | 3433 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3434 | { |
c4420975 | 3435 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3436 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3437 | } |
3438 | ||
3439 | void | |
f62ce20a | 3440 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3441 | { |
c4420975 | 3442 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3443 | if (ptr != NULL) { |
9e353e3b | 3444 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3445 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3446 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3447 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3448 | #endif |
3449 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3450 | /* |
71200d45 | 3451 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3452 | */ |
3453 | return; | |
9e353e3b | 3454 | #endif |
22569500 | 3455 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3456 | PerlProc_abort(); |
22569500 | 3457 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3458 | } |
3459 | /* | |
71200d45 | 3460 | * Now (or only) set cnt |
14a5cf38 | 3461 | */ |
9e353e3b | 3462 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3463 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3464 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3465 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3466 | PerlSIO_set_ptr(stdio, |
3467 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3468 | cnt)); | |
22569500 | 3469 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3470 | PerlProc_abort(); |
22569500 NIS |
3471 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3472 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3473 | } |
3474 | ||
93679785 | 3475 | |
9e353e3b NIS |
3476 | #endif |
3477 | ||
93679785 NIS |
3478 | IV |
3479 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3480 | { | |
c4420975 | 3481 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3482 | int c; |
96a5add6 AL |
3483 | PERL_UNUSED_CONTEXT; |
3484 | ||
93679785 NIS |
3485 | /* |
3486 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3487 | */ | |
3488 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3489 | if (PerlSIO_fflush(stdio) != 0) | |
3490 | return EOF; | |
3491 | } | |
f3be3723 BL |
3492 | for (;;) { |
3493 | c = PerlSIO_fgetc(stdio); | |
3494 | if (c != EOF) | |
3495 | break; | |
3496 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3497 | return EOF; | |
3498 | PERL_ASYNC_CHECK(); | |
3499 | SETERRNO(0,0); | |
3500 | } | |
93679785 NIS |
3501 | |
3502 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3503 | |
3504 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3505 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3506 | /* Fake ungetc() to the real buffer in case system's ungetc |
3507 | goes elsewhere | |
3508 | */ | |
3509 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3510 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3511 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3512 | if (ptr == base+1) { | |
3513 | *--ptr = (STDCHAR) c; | |
3514 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3515 | if (PerlSIO_feof(stdio)) | |
3516 | PerlSIO_clearerr(stdio); | |
3517 | return 0; | |
3518 | } | |
3519 | } | |
313e59c8 NIS |
3520 | else |
3521 | #endif | |
3522 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3523 | STDCHAR ch = c; |
3524 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3525 | return 0; | |
3526 | } | |
3527 | } | |
93679785 NIS |
3528 | #endif |
3529 | ||
3530 | #if defined(VMS) | |
3531 | /* An ungetc()d char is handled separately from the regular | |
3532 | * buffer, so we stuff it in the buffer ourselves. | |
3533 | * Should never get called as should hit code above | |
3534 | */ | |
bad9695d NIS |
3535 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3536 | (*stdio)->_cnt++; | |
93679785 NIS |
3537 | #else |
3538 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3539 | using ungetc(). |
93679785 NIS |
3540 | */ |
3541 | if (PerlSIO_ungetc(c, stdio) != c) | |
3542 | return EOF; | |
3543 | #endif | |
3544 | return 0; | |
3545 | } | |
3546 | ||
3547 | ||
3548 | ||
27da23d5 | 3549 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3550 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3551 | "stdio", |
3552 | sizeof(PerlIOStdio), | |
86e05cf2 | 3553 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3554 | PerlIOStdio_pushed, |
2376d97d | 3555 | PerlIOBase_popped, |
14a5cf38 | 3556 | PerlIOStdio_open, |
86e05cf2 | 3557 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3558 | NULL, |
3559 | PerlIOStdio_fileno, | |
71200d45 | 3560 | PerlIOStdio_dup, |
14a5cf38 JH |
3561 | PerlIOStdio_read, |
3562 | PerlIOStdio_unread, | |
3563 | PerlIOStdio_write, | |
3564 | PerlIOStdio_seek, | |
3565 | PerlIOStdio_tell, | |
3566 | PerlIOStdio_close, | |
3567 | PerlIOStdio_flush, | |
3568 | PerlIOStdio_fill, | |
3569 | PerlIOStdio_eof, | |
3570 | PerlIOStdio_error, | |
3571 | PerlIOStdio_clearerr, | |
3572 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3573 | #ifdef FILE_base |
14a5cf38 JH |
3574 | PerlIOStdio_get_base, |
3575 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3576 | #else |
14a5cf38 JH |
3577 | NULL, |
3578 | NULL, | |
9e353e3b NIS |
3579 | #endif |
3580 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3581 | PerlIOStdio_get_ptr, |
3582 | PerlIOStdio_get_cnt, | |
15b61c98 | 3583 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3584 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3585 | # else |
3586 | NULL, | |
3587 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3588 | #else | |
3589 | NULL, | |
14a5cf38 JH |
3590 | NULL, |
3591 | NULL, | |
15b61c98 | 3592 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3593 | }; |
3594 | ||
b9d6bf13 JH |
3595 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3596 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3597 | FILE * |
81428673 | 3598 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3599 | { |
e87a358a | 3600 | dTHX; |
81428673 NIS |
3601 | FILE *stdio = NULL; |
3602 | if (PerlIOValid(f)) { | |
3603 | char buf[8]; | |
3604 | PerlIO_flush(f); | |
3605 | if (!mode || !*mode) { | |
3606 | mode = PerlIO_modestr(f, buf); | |
3607 | } | |
3608 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3609 | if (stdio) { | |
3610 | PerlIOl *l = *f; | |
9f75cc58 | 3611 | PerlIO *f2; |
81428673 NIS |
3612 | /* De-link any lower layers so new :stdio sticks */ |
3613 | *f = NULL; | |
a0714e2c | 3614 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3615 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3616 | s->stdio = stdio; |
6b54a403 | 3617 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3618 | /* Link previous lower layers under new one */ |
3619 | *PerlIONext(f) = l; | |
3620 | } | |
3621 | else { | |
3622 | /* restore layers list */ | |
3623 | *f = l; | |
3624 | } | |
a33cf58c | 3625 | } |
14a5cf38 JH |
3626 | } |
3627 | return stdio; | |
9e353e3b NIS |
3628 | } |
3629 | ||
81428673 | 3630 | |
9e353e3b NIS |
3631 | FILE * |
3632 | PerlIO_findFILE(PerlIO *f) | |
3633 | { | |
14a5cf38 | 3634 | PerlIOl *l = *f; |
bbbc33d0 | 3635 | FILE *stdio; |
14a5cf38 JH |
3636 | while (l) { |
3637 | if (l->tab == &PerlIO_stdio) { | |
3638 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3639 | return s->stdio; | |
3640 | } | |
3641 | l = *PerlIONext(&l); | |
f7e7eb72 | 3642 | } |
4b069b44 | 3643 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3644 | /* However, we're not really exporting a FILE * to someone else (who |
3645 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
3646 | So we need to undo its refernce count increase on the underlying file | |
3647 | descriptor. We have to do this, because if the loop above returns you | |
3648 | the FILE *, then *it* didn't increase any reference count. So there's | |
3649 | only one way to be consistent. */ | |
3650 | stdio = PerlIO_exportFILE(f, NULL); | |
3651 | if (stdio) { | |
3652 | const int fd = fileno(stdio); | |
3653 | if (fd >= 0) | |
3654 | PerlIOUnix_refcnt_dec(fd); | |
3655 | } | |
3656 | return stdio; | |
9e353e3b NIS |
3657 | } |
3658 | ||
b9d6bf13 | 3659 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3660 | void |
3661 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3662 | { | |
27da23d5 | 3663 | dVAR; |
22569500 NIS |
3664 | PerlIOl *l; |
3665 | while ((l = *p)) { | |
3666 | if (l->tab == &PerlIO_stdio) { | |
3667 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3668 | if (s->stdio == f) { | |
3669 | dTHX; | |
6b54a403 NC |
3670 | const int fd = fileno(f); |
3671 | if (fd >= 0) | |
3672 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3673 | PerlIO_pop(aTHX_ p); |
3674 | return; | |
3675 | } | |
3676 | } | |
3677 | p = PerlIONext(p); | |
3678 | } | |
3679 | return; | |
9e353e3b NIS |
3680 | } |
3681 | ||
3682 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3683 | /* |
71200d45 | 3684 | * perlio buffer layer |
14a5cf38 | 3685 | */ |
9e353e3b | 3686 | |
5e2ab84b | 3687 | IV |
2dc2558e | 3688 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3689 | { |
14a5cf38 | 3690 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3691 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3692 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3693 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3694 | } | |
4b069b44 | 3695 | if (*PerlIONext(f)) { |
de009b76 | 3696 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3697 | if (posn != (Off_t) - 1) { |
3698 | b->posn = posn; | |
3699 | } | |
14a5cf38 | 3700 | } |
2dc2558e | 3701 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3702 | } |
3703 | ||
9e353e3b | 3704 | PerlIO * |
14a5cf38 JH |
3705 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3706 | IV n, const char *mode, int fd, int imode, int perm, | |
3707 | PerlIO *f, int narg, SV **args) | |
3708 | { | |
04892f78 | 3709 | if (PerlIOValid(f)) { |
14a5cf38 | 3710 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3711 | PerlIO_funcs *tab = |
3712 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3713 | if (tab && tab->Open) | |
3714 | next = | |
3715 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3716 | next, narg, args); | |
2dc2558e | 3717 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3718 | return NULL; |
3719 | } | |
3720 | } | |
3721 | else { | |
04892f78 | 3722 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3723 | int init = 0; |
3b6c1aba | 3724 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3725 | init = 1; |
3726 | /* | |
71200d45 | 3727 | * mode++; |
14a5cf38 JH |
3728 | */ |
3729 | } | |
67363c0d JH |
3730 | if (tab && tab->Open) |
3731 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3732 | f, narg, args); | |
3733 | else | |
3734 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3735 | if (f) { |
22569500 | 3736 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3737 | /* |
3738 | * if push fails during open, open fails. close will pop us. | |
3739 | */ | |
3740 | PerlIO_close (f); | |
3741 | return NULL; | |
3742 | } else { | |
3743 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3744 | if (init && fd == 2) { |
3745 | /* | |
3746 | * Initial stderr is unbuffered | |
3747 | */ | |
3748 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3749 | } | |
23b84778 IZ |
3750 | #ifdef PERLIO_USING_CRLF |
3751 | # ifdef PERLIO_IS_BINMODE_FD | |
3752 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3753 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3754 | else |
3755 | # endif | |
3756 | /* | |
3757 | * do something about failing setmode()? --jhi | |
3758 | */ | |
3759 | PerlLIO_setmode(fd, O_BINARY); | |
3760 | #endif | |
14a5cf38 JH |
3761 | } |
3762 | } | |
ee518936 | 3763 | } |
14a5cf38 | 3764 | return f; |
9e353e3b NIS |
3765 | } |
3766 | ||
14a5cf38 JH |
3767 | /* |
3768 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3769 | * read or write state. For write state, we put the postponed data through |
3770 | * the next layers. For read state, we seek() the next layers to the | |
3771 | * offset given by current position in the buffer, and discard the buffer | |
3772 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3773 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3774 | */ |
9e353e3b | 3775 | IV |
f62ce20a | 3776 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3777 | { |
dcda55fc | 3778 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3779 | int code = 0; |
04892f78 | 3780 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3781 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3782 | /* | |
71200d45 | 3783 | * write() the buffer |
14a5cf38 | 3784 | */ |
de009b76 AL |
3785 | const STDCHAR *buf = b->buf; |
3786 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3787 | while (p < b->ptr) { |
3788 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3789 | if (count > 0) { | |
3790 | p += count; | |
3791 | } | |
3792 | else if (count < 0 || PerlIO_error(n)) { | |
3793 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3794 | code = -1; | |
3795 | break; | |
3796 | } | |
3797 | } | |
3798 | b->posn += (p - buf); | |
3799 | } | |
3800 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3801 | STDCHAR *buf = PerlIO_get_base(f); | |
3802 | /* | |
71200d45 | 3803 | * Note position change |
14a5cf38 JH |
3804 | */ |
3805 | b->posn += (b->ptr - buf); | |
3806 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3807 | /* We did not consume all of it - try and seek downstream to |
3808 | our logical position | |
14a5cf38 | 3809 | */ |
4b069b44 | 3810 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3811 | /* Reload n as some layers may pop themselves on seek */ |
3812 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3813 | } |
ba5c3fe9 | 3814 | else { |
4b069b44 NIS |
3815 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3816 | data is lost for good - so return saying "ok" having undone | |
3817 | the position adjust | |
3818 | */ | |
3819 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3820 | return code; |
3821 | } | |
14a5cf38 JH |
3822 | } |
3823 | } | |
3824 | b->ptr = b->end = b->buf; | |
3825 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3826 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3827 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3828 | code = -1; |
3829 | return code; | |
6f9d8c32 NIS |
3830 | } |
3831 | ||
93c2c2ec IZ |
3832 | /* This discards the content of the buffer after b->ptr, and rereads |
3833 | * the buffer from the position off in the layer downstream; here off | |
3834 | * is at offset corresponding to b->ptr - b->buf. | |
3835 | */ | |
06da4f11 | 3836 | IV |
f62ce20a | 3837 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3838 | { |
dcda55fc | 3839 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3840 | PerlIO *n = PerlIONext(f); |
3841 | SSize_t avail; | |
3842 | /* | |
4b069b44 NIS |
3843 | * Down-stream flush is defined not to loose read data so is harmless. |
3844 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3845 | */ |
93c2c2ec | 3846 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3847 | return -1; |
3848 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3849 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3850 | |
3851 | if (!b->buf) | |
22569500 | 3852 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3853 | |
0f0eef27 | 3854 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3855 | |
14a5cf38 | 3856 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3857 | |
3858 | if (!PerlIOValid(n)) { | |
3859 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3860 | return -1; | |
3861 | } | |
3862 | ||
14a5cf38 JH |
3863 | if (PerlIO_fast_gets(n)) { |
3864 | /* | |
04892f78 | 3865 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3866 | * ->Read() because that will loop till it gets what we asked for |
3867 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3868 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3869 | */ |
3870 | avail = PerlIO_get_cnt(n); | |
3871 | if (avail <= 0) { | |
3872 | avail = PerlIO_fill(n); | |
3873 | if (avail == 0) | |
3874 | avail = PerlIO_get_cnt(n); | |
3875 | else { | |
3876 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3877 | avail = 0; | |
3878 | } | |
3879 | } | |
3880 | if (avail > 0) { | |
3881 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3882 | const SSize_t cnt = avail; |
eb160463 | 3883 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3884 | avail = b->bufsiz; |
3885 | Copy(ptr, b->buf, avail, STDCHAR); | |
3886 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3887 | } | |
3888 | } | |
3889 | else { | |
3890 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3891 | } | |
3892 | if (avail <= 0) { | |
3893 | if (avail == 0) | |
3894 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3895 | else | |
3896 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3897 | return -1; | |
3898 | } | |
3899 | b->end = b->buf + avail; | |
3900 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3901 | return 0; | |
06da4f11 NIS |
3902 | } |
3903 | ||
6f9d8c32 | 3904 | SSize_t |
f62ce20a | 3905 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3906 | { |
04892f78 | 3907 | if (PerlIOValid(f)) { |
dcda55fc | 3908 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3909 | if (!b->ptr) |
3910 | PerlIO_get_base(f); | |
f62ce20a | 3911 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3912 | } |
3913 | return 0; | |
6f9d8c32 NIS |
3914 | } |
3915 | ||
9e353e3b | 3916 | SSize_t |
f62ce20a | 3917 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3918 | { |
14a5cf38 | 3919 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3920 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3921 | SSize_t unread = 0; |
3922 | SSize_t avail; | |
3923 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3924 | PerlIO_flush(f); | |
3925 | if (!b->buf) | |
3926 | PerlIO_get_base(f); | |
3927 | if (b->buf) { | |
3928 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3929 | /* | |
3930 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3931 | * which have been read back to buffer start |
14a5cf38 JH |
3932 | */ |
3933 | avail = (b->ptr - b->buf); | |
3934 | } | |
3935 | else { | |
3936 | /* | |
3937 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3938 | * unread |
14a5cf38 JH |
3939 | */ |
3940 | avail = b->bufsiz; | |
3941 | b->end = b->buf + avail; | |
3942 | b->ptr = b->end; | |
3943 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3944 | /* | |
71200d45 | 3945 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3946 | */ |
3947 | b->posn -= b->bufsiz; | |
3948 | } | |
3949 | if (avail > (SSize_t) count) { | |
3950 | /* | |
71200d45 | 3951 | * If we have space for more than count, just move count |
14a5cf38 JH |
3952 | */ |
3953 | avail = count; | |
3954 | } | |
3955 | if (avail > 0) { | |
3956 | b->ptr -= avail; | |
3957 | buf -= avail; | |
3958 | /* | |
3959 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3960 | * there |
14a5cf38 JH |
3961 | */ |
3962 | if (buf != b->ptr) { | |
3963 | Copy(buf, b->ptr, avail, STDCHAR); | |
3964 | } | |
3965 | count -= avail; | |
3966 | unread += avail; | |
3967 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3968 | } | |
3969 | } | |
93679785 NIS |
3970 | if (count > 0) { |
3971 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3972 | } | |
14a5cf38 | 3973 | return unread; |
760ac839 LW |
3974 | } |
3975 | ||
9e353e3b | 3976 | SSize_t |
f62ce20a | 3977 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3978 | { |
de009b76 | 3979 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3980 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3981 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3982 | Size_t written = 0; |
3983 | if (!b->buf) | |
3984 | PerlIO_get_base(f); | |
3985 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3986 | return 0; | |
0678cb22 NIS |
3987 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3988 | if (PerlIO_flush(f) != 0) { | |
3989 | return 0; | |
3990 | } | |
3991 | } | |
ee56a6b9 CS |
3992 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
3993 | flushptr = buf + count; | |
3994 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
3995 | --flushptr; | |
3996 | } | |
14a5cf38 JH |
3997 | while (count > 0) { |
3998 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
3999 | if ((SSize_t) count < avail) | |
4000 | avail = count; | |
ee56a6b9 CS |
4001 | if (flushptr > buf && flushptr <= buf + avail) |
4002 | avail = flushptr - buf; | |
14a5cf38 | 4003 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4004 | if (avail) { |
4005 | Copy(buf, b->ptr, avail, STDCHAR); | |
4006 | count -= avail; | |
4007 | buf += avail; | |
4008 | written += avail; | |
4009 | b->ptr += avail; | |
4010 | if (buf == flushptr) | |
4011 | PerlIO_flush(f); | |
14a5cf38 JH |
4012 | } |
4013 | if (b->ptr >= (b->buf + b->bufsiz)) | |
4014 | PerlIO_flush(f); | |
4015 | } | |
4016 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4017 | PerlIO_flush(f); | |
4018 | return written; | |
9e353e3b NIS |
4019 | } |
4020 | ||
94a175e1 | 4021 | IV |
f62ce20a | 4022 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4023 | { |
14a5cf38 JH |
4024 | IV code; |
4025 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4026 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4027 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4028 | if (code == 0) { | |
de009b76 | 4029 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4030 | b->posn = PerlIO_tell(PerlIONext(f)); |
4031 | } | |
9e353e3b | 4032 | } |
14a5cf38 | 4033 | return code; |
9e353e3b NIS |
4034 | } |
4035 | ||
4036 | Off_t | |
f62ce20a | 4037 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4038 | { |
dcda55fc | 4039 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4040 | /* |
71200d45 | 4041 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4042 | */ |
4043 | Off_t posn = b->posn; | |
37725cdc | 4044 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4045 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4046 | #if 1 | |
4047 | /* As O_APPEND files are normally shared in some sense it is better | |
4048 | to flush : | |
4049 | */ | |
4050 | PerlIO_flush(f); | |
4051 | #else | |
37725cdc | 4052 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4053 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4054 | #endif | |
4055 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4056 | } | |
14a5cf38 JH |
4057 | if (b->buf) { |
4058 | /* | |
71200d45 | 4059 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4060 | */ |
4061 | posn += (b->ptr - b->buf); | |
4062 | } | |
4063 | return posn; | |
9e353e3b NIS |
4064 | } |
4065 | ||
4066 | IV | |
44798d05 NIS |
4067 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4068 | { | |
de009b76 AL |
4069 | const IV code = PerlIOBase_popped(aTHX_ f); |
4070 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4071 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4072 | Safefree(b->buf); | |
4073 | } | |
dcda55fc | 4074 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4075 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4076 | return code; | |
4077 | } | |
4078 | ||
4079 | IV | |
f62ce20a | 4080 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4081 | { |
de009b76 AL |
4082 | const IV code = PerlIOBase_close(aTHX_ f); |
4083 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4084 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4085 | Safefree(b->buf); |
14a5cf38 | 4086 | } |
dcda55fc | 4087 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4088 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4089 | return code; | |
760ac839 LW |
4090 | } |
4091 | ||
9e353e3b | 4092 | STDCHAR * |
f62ce20a | 4093 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4094 | { |
dcda55fc | 4095 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4096 | if (!b->buf) |
4097 | PerlIO_get_base(f); | |
4098 | return b->ptr; | |
9e353e3b NIS |
4099 | } |
4100 | ||
05d1247b | 4101 | SSize_t |
f62ce20a | 4102 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4103 | { |
dcda55fc | 4104 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4105 | if (!b->buf) |
4106 | PerlIO_get_base(f); | |
4107 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4108 | return (b->end - b->ptr); | |
4109 | return 0; | |
9e353e3b NIS |
4110 | } |
4111 | ||
4112 | STDCHAR * | |
f62ce20a | 4113 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4114 | { |
dcda55fc | 4115 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4116 | PERL_UNUSED_CONTEXT; |
4117 | ||
14a5cf38 JH |
4118 | if (!b->buf) { |
4119 | if (!b->bufsiz) | |
4120 | b->bufsiz = 4096; | |
e05a0d74 | 4121 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4122 | if (!b->buf) { |
4123 | b->buf = (STDCHAR *) & b->oneword; | |
4124 | b->bufsiz = sizeof(b->oneword); | |
4125 | } | |
dcda55fc | 4126 | b->end = b->ptr = b->buf; |
06da4f11 | 4127 | } |
14a5cf38 | 4128 | return b->buf; |
9e353e3b NIS |
4129 | } |
4130 | ||
4131 | Size_t | |
f62ce20a | 4132 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4133 | { |
dcda55fc | 4134 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4135 | if (!b->buf) |
4136 | PerlIO_get_base(f); | |
4137 | return (b->end - b->buf); | |
9e353e3b NIS |
4138 | } |
4139 | ||
4140 | void | |
f62ce20a | 4141 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4142 | { |
dcda55fc | 4143 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4144 | #ifndef DEBUGGING |
4145 | PERL_UNUSED_ARG(cnt); | |
4146 | #endif | |
14a5cf38 JH |
4147 | if (!b->buf) |
4148 | PerlIO_get_base(f); | |
4149 | b->ptr = ptr; | |
b727803b RGS |
4150 | assert(PerlIO_get_cnt(f) == cnt); |
4151 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4152 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4153 | } |
4154 | ||
71200d45 | 4155 | PerlIO * |
ecdeb87c | 4156 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4157 | { |
ecdeb87c | 4158 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4159 | } |
4160 | ||
4161 | ||
4162 | ||
27da23d5 | 4163 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4164 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4165 | "perlio", |
4166 | sizeof(PerlIOBuf), | |
86e05cf2 | 4167 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4168 | PerlIOBuf_pushed, |
44798d05 | 4169 | PerlIOBuf_popped, |
14a5cf38 | 4170 | PerlIOBuf_open, |
86e05cf2 | 4171 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4172 | NULL, |
4173 | PerlIOBase_fileno, | |
71200d45 | 4174 | PerlIOBuf_dup, |
14a5cf38 JH |
4175 | PerlIOBuf_read, |
4176 | PerlIOBuf_unread, | |
4177 | PerlIOBuf_write, | |
4178 | PerlIOBuf_seek, | |
4179 | PerlIOBuf_tell, | |
4180 | PerlIOBuf_close, | |
4181 | PerlIOBuf_flush, | |
4182 | PerlIOBuf_fill, | |
4183 | PerlIOBase_eof, | |
4184 | PerlIOBase_error, | |
4185 | PerlIOBase_clearerr, | |
4186 | PerlIOBase_setlinebuf, | |
4187 | PerlIOBuf_get_base, | |
4188 | PerlIOBuf_bufsiz, | |
4189 | PerlIOBuf_get_ptr, | |
4190 | PerlIOBuf_get_cnt, | |
4191 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4192 | }; |
4193 | ||
66ecd56b | 4194 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4195 | /* |
71200d45 | 4196 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4197 | */ |
5e2ab84b NIS |
4198 | |
4199 | IV | |
f62ce20a | 4200 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4201 | { |
14a5cf38 | 4202 | /* |
71200d45 | 4203 | * Should never happen |
14a5cf38 JH |
4204 | */ |
4205 | PerlIO_flush(f); | |
4206 | return 0; | |
5e2ab84b NIS |
4207 | } |
4208 | ||
4209 | IV | |
f62ce20a | 4210 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4211 | { |
14a5cf38 | 4212 | /* |
71200d45 | 4213 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4214 | */ |
4215 | PerlIO_flush(f); | |
4216 | return PerlIO_close(f); | |
5e2ab84b NIS |
4217 | } |
4218 | ||
94a175e1 | 4219 | IV |
f62ce20a | 4220 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4221 | { |
14a5cf38 | 4222 | /* |
71200d45 | 4223 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4224 | */ |
4225 | PerlIO_flush(f); | |
4226 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4227 | } |
4228 | ||
4229 | ||
4230 | IV | |
f62ce20a | 4231 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4232 | { |
dcda55fc | 4233 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4234 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4235 | Safefree(b->buf); |
14a5cf38 JH |
4236 | b->buf = NULL; |
4237 | } | |
4238 | PerlIO_pop(aTHX_ f); | |
4239 | return 0; | |
5e2ab84b NIS |
4240 | } |
4241 | ||
4242 | void | |
f62ce20a | 4243 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4244 | { |
14a5cf38 JH |
4245 | if (cnt <= 0) { |
4246 | PerlIO_flush(f); | |
4247 | } | |
4248 | else { | |
f62ce20a | 4249 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4250 | } |
5e2ab84b NIS |
4251 | } |
4252 | ||
4253 | IV | |
2dc2558e | 4254 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4255 | { |
de009b76 | 4256 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4257 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4258 | /* |
71200d45 NIS |
4259 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4260 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4261 | */ |
4262 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4263 | (PerlIOBase(PerlIONext(f))-> | |
4264 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4265 | return code; | |
5e2ab84b NIS |
4266 | } |
4267 | ||
4268 | SSize_t | |
f62ce20a | 4269 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4270 | { |
14a5cf38 JH |
4271 | SSize_t avail = PerlIO_get_cnt(f); |
4272 | SSize_t got = 0; | |
eb160463 | 4273 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4274 | avail = count; |
4275 | if (avail > 0) | |
f62ce20a | 4276 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4277 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4278 | const SSize_t more = |
14a5cf38 JH |
4279 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4280 | if (more >= 0 || got == 0) | |
4281 | got += more; | |
4282 | } | |
4283 | return got; | |
5e2ab84b NIS |
4284 | } |
4285 | ||
27da23d5 | 4286 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4287 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4288 | "pending", |
4289 | sizeof(PerlIOBuf), | |
86e05cf2 | 4290 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4291 | PerlIOPending_pushed, |
44798d05 | 4292 | PerlIOBuf_popped, |
14a5cf38 | 4293 | NULL, |
86e05cf2 | 4294 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4295 | NULL, |
4296 | PerlIOBase_fileno, | |
71200d45 | 4297 | PerlIOBuf_dup, |
14a5cf38 JH |
4298 | PerlIOPending_read, |
4299 | PerlIOBuf_unread, | |
4300 | PerlIOBuf_write, | |
4301 | PerlIOPending_seek, | |
4302 | PerlIOBuf_tell, | |
4303 | PerlIOPending_close, | |
4304 | PerlIOPending_flush, | |
4305 | PerlIOPending_fill, | |
4306 | PerlIOBase_eof, | |
4307 | PerlIOBase_error, | |
4308 | PerlIOBase_clearerr, | |
4309 | PerlIOBase_setlinebuf, | |
4310 | PerlIOBuf_get_base, | |
4311 | PerlIOBuf_bufsiz, | |
4312 | PerlIOBuf_get_ptr, | |
4313 | PerlIOBuf_get_cnt, | |
4314 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4315 | }; |
4316 | ||
4317 | ||
4318 | ||
4319 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4320 | /* |
4321 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4322 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4323 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4324 | * |
4325 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4326 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4327 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4328 | * that it ends at c->nl; these two cases can be distinguished by | |
4329 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4330 | * _unread() and _flush() calls. | |
4331 | * It only matters for read operations. | |
66ecd56b NIS |
4332 | */ |
4333 | ||
14a5cf38 | 4334 | typedef struct { |
22569500 NIS |
4335 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4336 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4337 | * buffer */ |
99efab12 NIS |
4338 | } PerlIOCrlf; |
4339 | ||
ff1e3883 JD |
4340 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4341 | * Otherwise the :crlf layer would always revert back to | |
4342 | * raw mode. | |
4343 | */ | |
4344 | static void | |
4345 | S_inherit_utf8_flag(PerlIO *f) | |
4346 | { | |
4347 | PerlIO *g = PerlIONext(f); | |
4348 | if (PerlIOValid(g)) { | |
4349 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4350 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4351 | } | |
4352 | } | |
4353 | } | |
4354 | ||
f5b9d040 | 4355 | IV |
2dc2558e | 4356 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4357 | { |
14a5cf38 JH |
4358 | IV code; |
4359 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4360 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4361 | #if 0 |
14a5cf38 | 4362 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4363 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4364 | PerlIOBase(f)->flags); |
5e2ab84b | 4365 | #endif |
8229d19f JH |
4366 | { |
4367 | /* Enable the first CRLF capable layer you can find, but if none | |
4368 | * found, the one we just pushed is fine. This results in at | |
4369 | * any given moment at most one CRLF-capable layer being enabled | |
4370 | * in the whole layer stack. */ | |
4371 | PerlIO *g = PerlIONext(f); | |
ff1e3883 | 4372 | while (PerlIOValid(g)) { |
8229d19f JH |
4373 | PerlIOl *b = PerlIOBase(g); |
4374 | if (b && b->tab == &PerlIO_crlf) { | |
4375 | if (!(b->flags & PERLIO_F_CRLF)) | |
4376 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4377 | S_inherit_utf8_flag(g); |
8229d19f JH |
4378 | PerlIO_pop(aTHX_ f); |
4379 | return code; | |
4380 | } | |
4381 | g = PerlIONext(g); | |
4382 | } | |
4383 | } | |
ff1e3883 | 4384 | S_inherit_utf8_flag(f); |
14a5cf38 | 4385 | return code; |
f5b9d040 NIS |
4386 | } |
4387 | ||
4388 | ||
99efab12 | 4389 | SSize_t |
f62ce20a | 4390 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4391 | { |
dcda55fc | 4392 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4393 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4394 | *(c->nl) = 0xd; |
4395 | c->nl = NULL; | |
4396 | } | |
4397 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4398 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4399 | else { |
4400 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4401 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4402 | SSize_t unread = 0; | |
4403 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4404 | PerlIO_flush(f); | |
4405 | if (!b->buf) | |
4406 | PerlIO_get_base(f); | |
4407 | if (b->buf) { | |
4408 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4409 | b->end = b->ptr = b->buf + b->bufsiz; | |
4410 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4411 | b->posn -= b->bufsiz; | |
4412 | } | |
4413 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4414 | const int ch = *--buf; |
14a5cf38 JH |
4415 | if (ch == '\n') { |
4416 | if (b->ptr - 2 >= b->buf) { | |
4417 | *--(b->ptr) = 0xa; | |
4418 | *--(b->ptr) = 0xd; | |
4419 | unread++; | |
4420 | count--; | |
4421 | } | |
4422 | else { | |
93c2c2ec IZ |
4423 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4424 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4425 | unread++; | |
4426 | count--; | |
14a5cf38 JH |
4427 | } |
4428 | } | |
4429 | else { | |
4430 | *--(b->ptr) = ch; | |
4431 | unread++; | |
4432 | count--; | |
4433 | } | |
4434 | } | |
4435 | } | |
4436 | return unread; | |
4437 | } | |
99efab12 NIS |
4438 | } |
4439 | ||
93c2c2ec | 4440 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4441 | SSize_t |
f62ce20a | 4442 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4443 | { |
dcda55fc | 4444 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4445 | if (!b->buf) |
4446 | PerlIO_get_base(f); | |
4447 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4448 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4449 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4450 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4451 | scan: |
4452 | while (nl < b->end && *nl != 0xd) | |
4453 | nl++; | |
4454 | if (nl < b->end && *nl == 0xd) { | |
4455 | test: | |
4456 | if (nl + 1 < b->end) { | |
4457 | if (nl[1] == 0xa) { | |
4458 | *nl = '\n'; | |
4459 | c->nl = nl; | |
4460 | } | |
4461 | else { | |
4462 | /* | |
71200d45 | 4463 | * Not CR,LF but just CR |
14a5cf38 JH |
4464 | */ |
4465 | nl++; | |
4466 | goto scan; | |
4467 | } | |
4468 | } | |
4469 | else { | |
4470 | /* | |
71200d45 | 4471 | * Blast - found CR as last char in buffer |
14a5cf38 | 4472 | */ |
e87a358a | 4473 | |
14a5cf38 JH |
4474 | if (b->ptr < nl) { |
4475 | /* | |
4476 | * They may not care, defer work as long as | |
71200d45 | 4477 | * possible |
14a5cf38 | 4478 | */ |
a0d1d361 | 4479 | c->nl = nl; |
14a5cf38 JH |
4480 | return (nl - b->ptr); |
4481 | } | |
4482 | else { | |
4483 | int code; | |
22569500 | 4484 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4485 | * flush() is concerned */ |
22569500 | 4486 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4487 | /* Note as we have moved buf up flush's |
4488 | posn += ptr-buf | |
4489 | will naturally make posn point at CR | |
4490 | */ | |
22569500 NIS |
4491 | b->bufsiz--; /* Buffer is thus smaller */ |
4492 | code = PerlIO_fill(f); /* Fetch some more */ | |
4493 | b->bufsiz++; /* Restore size for next time */ | |
4494 | b->buf--; /* Point at space */ | |
4495 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4496 | * off */ |
22569500 | 4497 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4498 | if (code == 0) |
22569500 | 4499 | goto test; /* fill() call worked */ |
14a5cf38 | 4500 | /* |
71200d45 | 4501 | * CR at EOF - just fall through |
14a5cf38 | 4502 | */ |
a0d1d361 | 4503 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4504 | } |
4505 | } | |
4506 | } | |
4507 | } | |
4508 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4509 | } | |
4510 | return 0; | |
99efab12 NIS |
4511 | } |
4512 | ||
4513 | void | |
f62ce20a | 4514 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4515 | { |
dcda55fc AL |
4516 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4517 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4518 | if (!b->buf) |
4519 | PerlIO_get_base(f); | |
4520 | if (!ptr) { | |
a0d1d361 | 4521 | if (c->nl) { |
14a5cf38 | 4522 | ptr = c->nl + 1; |
22569500 | 4523 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4524 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4525 | ptr--; |
4526 | } | |
4527 | } | |
14a5cf38 JH |
4528 | else { |
4529 | ptr = b->end; | |
14a5cf38 JH |
4530 | } |
4531 | ptr -= cnt; | |
4532 | } | |
4533 | else { | |
6f207bd3 | 4534 | NOOP; |
3b4bd3fd | 4535 | #if 0 |
14a5cf38 | 4536 | /* |
71200d45 | 4537 | * Test code - delete when it works ... |
14a5cf38 | 4538 | */ |
3b4bd3fd | 4539 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4540 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4541 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4542 | /* Defered CR at end of buffer case - we lied about count */ |
4543 | chk--; | |
22569500 | 4544 | } |
14a5cf38 JH |
4545 | chk -= cnt; |
4546 | ||
a0d1d361 | 4547 | if (ptr != chk ) { |
99ef548b | 4548 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4549 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4550 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4551 | } |
99ef548b | 4552 | #endif |
14a5cf38 JH |
4553 | } |
4554 | if (c->nl) { | |
4555 | if (ptr > c->nl) { | |
4556 | /* | |
71200d45 | 4557 | * They have taken what we lied about |
14a5cf38 JH |
4558 | */ |
4559 | *(c->nl) = 0xd; | |
4560 | c->nl = NULL; | |
4561 | ptr++; | |
4562 | } | |
4563 | } | |
4564 | b->ptr = ptr; | |
4565 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4566 | } |
4567 | ||
4568 | SSize_t | |
f62ce20a | 4569 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4570 | { |
14a5cf38 | 4571 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4572 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4573 | else { |
dcda55fc | 4574 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4575 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4576 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4577 | if (!b->buf) |
4578 | PerlIO_get_base(f); | |
4579 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4580 | return 0; | |
4581 | while (buf < ebuf) { | |
dcda55fc | 4582 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4583 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4584 | while (buf < ebuf && b->ptr < eptr) { | |
4585 | if (*buf == '\n') { | |
4586 | if ((b->ptr + 2) > eptr) { | |
4587 | /* | |
71200d45 | 4588 | * Not room for both |
14a5cf38 JH |
4589 | */ |
4590 | PerlIO_flush(f); | |
4591 | break; | |
4592 | } | |
4593 | else { | |
22569500 NIS |
4594 | *(b->ptr)++ = 0xd; /* CR */ |
4595 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4596 | buf++; |
4597 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4598 | PerlIO_flush(f); | |
4599 | break; | |
4600 | } | |
4601 | } | |
4602 | } | |
4603 | else { | |
dcda55fc | 4604 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4605 | } |
4606 | if (b->ptr >= eptr) { | |
4607 | PerlIO_flush(f); | |
4608 | break; | |
4609 | } | |
4610 | } | |
4611 | } | |
4612 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4613 | PerlIO_flush(f); | |
4614 | return (buf - (STDCHAR *) vbuf); | |
4615 | } | |
99efab12 NIS |
4616 | } |
4617 | ||
4618 | IV | |
f62ce20a | 4619 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4620 | { |
dcda55fc | 4621 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4622 | if (c->nl) { |
4623 | *(c->nl) = 0xd; | |
4624 | c->nl = NULL; | |
4625 | } | |
f62ce20a | 4626 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4627 | } |
4628 | ||
86e05cf2 NIS |
4629 | IV |
4630 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4631 | { | |
4632 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4633 | /* In text mode - flush any pending stuff and flip it */ | |
4634 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4635 | #ifndef PERLIO_USING_CRLF | |
4636 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4637 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4638 | #endif |
4639 | } | |
4640 | return 0; | |
4641 | } | |
4642 | ||
27da23d5 | 4643 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4644 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4645 | "crlf", |
4646 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4647 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4648 | PerlIOCrlf_pushed, |
44798d05 | 4649 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4650 | PerlIOBuf_open, |
86e05cf2 | 4651 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4652 | NULL, |
4653 | PerlIOBase_fileno, | |
71200d45 | 4654 | PerlIOBuf_dup, |
de009b76 | 4655 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4656 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4657 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4658 | PerlIOBuf_seek, |
4659 | PerlIOBuf_tell, | |
4660 | PerlIOBuf_close, | |
4661 | PerlIOCrlf_flush, | |
4662 | PerlIOBuf_fill, | |
4663 | PerlIOBase_eof, | |
4664 | PerlIOBase_error, | |
4665 | PerlIOBase_clearerr, | |
4666 | PerlIOBase_setlinebuf, | |
4667 | PerlIOBuf_get_base, | |
4668 | PerlIOBuf_bufsiz, | |
4669 | PerlIOBuf_get_ptr, | |
4670 | PerlIOCrlf_get_cnt, | |
4671 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4672 | }; |
4673 | ||
06da4f11 NIS |
4674 | #ifdef HAS_MMAP |
4675 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4676 | /* |
71200d45 | 4677 | * mmap as "buffer" layer |
14a5cf38 | 4678 | */ |
06da4f11 | 4679 | |
14a5cf38 | 4680 | typedef struct { |
22569500 NIS |
4681 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4682 | Mmap_t mptr; /* Mapped address */ | |
4683 | Size_t len; /* mapped length */ | |
4684 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4685 | } PerlIOMmap; |
4686 | ||
4687 | IV | |
f62ce20a | 4688 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4689 | { |
27da23d5 | 4690 | dVAR; |
de009b76 AL |
4691 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4692 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4693 | IV code = 0; |
4694 | if (m->len) | |
4695 | abort(); | |
4696 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4697 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4698 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4699 | Stat_t st; |
4700 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4701 | if (code == 0 && S_ISREG(st.st_mode)) { |
4702 | SSize_t len = st.st_size - b->posn; | |
4703 | if (len > 0) { | |
4704 | Off_t posn; | |
27da23d5 JH |
4705 | if (PL_mmap_page_size <= 0) |
4706 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4707 | PL_mmap_page_size); | |
14a5cf38 JH |
4708 | if (b->posn < 0) { |
4709 | /* | |
4710 | * This is a hack - should never happen - open should | |
71200d45 | 4711 | * have set it ! |
14a5cf38 JH |
4712 | */ |
4713 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4714 | } | |
27da23d5 | 4715 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 | 4716 | len = st.st_size - posn; |
b91fbb93 | 4717 | m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
14a5cf38 | 4718 | if (m->mptr && m->mptr != (Mmap_t) - 1) { |
a5262162 | 4719 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4720 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4721 | #endif |
a5262162 | 4722 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4723 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4724 | #endif |
14a5cf38 JH |
4725 | PerlIOBase(f)->flags = |
4726 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4727 | b->end = ((STDCHAR *) m->mptr) + len; | |
4728 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4729 | b->ptr = b->buf; | |
4730 | m->len = len; | |
4731 | } | |
4732 | else { | |
4733 | b->buf = NULL; | |
4734 | } | |
4735 | } | |
4736 | else { | |
4737 | PerlIOBase(f)->flags = | |
4738 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4739 | b->buf = NULL; | |
4740 | b->ptr = b->end = b->ptr; | |
4741 | code = -1; | |
4742 | } | |
4743 | } | |
4744 | } | |
4745 | return code; | |
06da4f11 NIS |
4746 | } |
4747 | ||
4748 | IV | |
e87a358a | 4749 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4750 | { |
dcda55fc | 4751 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4752 | IV code = 0; |
4753 | if (m->len) { | |
dcda55fc | 4754 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4755 | if (b->buf) { |
1ccb7c8d JH |
4756 | /* The munmap address argument is tricky: depending on the |
4757 | * standard it is either "void *" or "caddr_t" (which is | |
4758 | * usually "char *" (signed or unsigned). If we cast it | |
4759 | * to "void *", those that have it caddr_t and an uptight | |
4760 | * C++ compiler, will freak out. But casting it as char* | |
4761 | * should work. Maybe. (Using Mmap_t figured out by | |
4762 | * Configure doesn't always work, apparently.) */ | |
4763 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4764 | b->buf = NULL; |
4765 | m->len = 0; | |
4766 | m->mptr = NULL; | |
4767 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4768 | code = -1; | |
4769 | } | |
4770 | b->ptr = b->end = b->buf; | |
4771 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4772 | } | |
4773 | return code; | |
06da4f11 NIS |
4774 | } |
4775 | ||
4776 | STDCHAR * | |
f62ce20a | 4777 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4778 | { |
dcda55fc AL |
4779 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4780 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4781 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4782 | /* | |
71200d45 | 4783 | * Already have a readbuffer in progress |
14a5cf38 JH |
4784 | */ |
4785 | return b->buf; | |
4786 | } | |
4787 | if (b->buf) { | |
4788 | /* | |
71200d45 | 4789 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4790 | */ |
22569500 NIS |
4791 | m->bbuf = b->buf; /* save it in case we need it again */ |
4792 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4793 | } |
4794 | if (!b->buf) { | |
22569500 | 4795 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4796 | if (!b->buf) { |
4797 | /* | |
71200d45 | 4798 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4799 | */ |
4800 | b->buf = m->bbuf; | |
4801 | } | |
4802 | } | |
4803 | b->ptr = b->end = b->buf; | |
4804 | if (b->buf) | |
4805 | return b->buf; | |
f62ce20a | 4806 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4807 | } |
4808 | ||
4809 | SSize_t | |
f62ce20a | 4810 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4811 | { |
dcda55fc AL |
4812 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4813 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4814 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4815 | PerlIO_flush(f); | |
4816 | if (b->ptr && (b->ptr - count) >= b->buf | |
4817 | && memEQ(b->ptr - count, vbuf, count)) { | |
4818 | b->ptr -= count; | |
4819 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4820 | return count; | |
4821 | } | |
4822 | if (m->len) { | |
4823 | /* | |
71200d45 | 4824 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4825 | */ |
4826 | PerlIO_flush(f); | |
4827 | /* | |
71200d45 | 4828 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4829 | */ |
4830 | if (!b->buf && m->bbuf) | |
4831 | b->buf = m->bbuf; | |
4832 | if (!b->buf) { | |
f62ce20a | 4833 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4834 | m->bbuf = b->buf; |
4835 | } | |
4836 | } | |
f62ce20a | 4837 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4838 | } |
4839 | ||
4840 | SSize_t | |
f62ce20a | 4841 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4842 | { |
de009b76 AL |
4843 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4844 | PerlIOBuf * const b = &m->base; | |
4845 | ||
14a5cf38 JH |
4846 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4847 | /* | |
71200d45 | 4848 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4849 | */ |
4850 | if (m->len) { | |
e87a358a | 4851 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4852 | return 0; |
4853 | } | |
4854 | /* | |
71200d45 | 4855 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4856 | */ |
4857 | if (!b->buf && m->bbuf) | |
4858 | b->buf = m->bbuf; | |
4859 | if (!b->buf) { | |
f62ce20a | 4860 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4861 | m->bbuf = b->buf; |
4862 | } | |
06da4f11 | 4863 | } |
f62ce20a | 4864 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4865 | } |
4866 | ||
4867 | IV | |
f62ce20a | 4868 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4869 | { |
dcda55fc AL |
4870 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4871 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4872 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4873 | /* |
71200d45 | 4874 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4875 | */ |
4876 | if (b->buf) { | |
4877 | if (m->len) { | |
4878 | /* | |
71200d45 | 4879 | * Unmap the buffer |
14a5cf38 | 4880 | */ |
e87a358a | 4881 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4882 | code = -1; |
4883 | } | |
4884 | else { | |
4885 | /* | |
4886 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4887 | * remember it in case we need one later |
14a5cf38 JH |
4888 | */ |
4889 | m->bbuf = b->buf; | |
4890 | } | |
4891 | } | |
4892 | return code; | |
06da4f11 NIS |
4893 | } |
4894 | ||
4895 | IV | |
f62ce20a | 4896 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4897 | { |
dcda55fc | 4898 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4899 | IV code = PerlIO_flush(f); |
4900 | if (code == 0 && !b->buf) { | |
f62ce20a | 4901 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4902 | } |
4903 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4904 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4905 | } |
4906 | return code; | |
06da4f11 NIS |
4907 | } |
4908 | ||
4909 | IV | |
f62ce20a | 4910 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4911 | { |
dcda55fc AL |
4912 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4913 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4914 | IV code = PerlIO_flush(f); |
4915 | if (m->bbuf) { | |
4916 | b->buf = m->bbuf; | |
4917 | m->bbuf = NULL; | |
4918 | b->ptr = b->end = b->buf; | |
4919 | } | |
f62ce20a | 4920 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4921 | code = -1; |
4922 | return code; | |
06da4f11 NIS |
4923 | } |
4924 | ||
71200d45 | 4925 | PerlIO * |
ecdeb87c | 4926 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4927 | { |
ecdeb87c | 4928 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4929 | } |
4930 | ||
06da4f11 | 4931 | |
27da23d5 | 4932 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4933 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4934 | "mmap", |
4935 | sizeof(PerlIOMmap), | |
86e05cf2 | 4936 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4937 | PerlIOBuf_pushed, |
44798d05 | 4938 | PerlIOBuf_popped, |
14a5cf38 | 4939 | PerlIOBuf_open, |
86e05cf2 | 4940 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4941 | NULL, |
4942 | PerlIOBase_fileno, | |
71200d45 | 4943 | PerlIOMmap_dup, |
14a5cf38 JH |
4944 | PerlIOBuf_read, |
4945 | PerlIOMmap_unread, | |
4946 | PerlIOMmap_write, | |
4947 | PerlIOBuf_seek, | |
4948 | PerlIOBuf_tell, | |
4949 | PerlIOBuf_close, | |
4950 | PerlIOMmap_flush, | |
4951 | PerlIOMmap_fill, | |
4952 | PerlIOBase_eof, | |
4953 | PerlIOBase_error, | |
4954 | PerlIOBase_clearerr, | |
4955 | PerlIOBase_setlinebuf, | |
4956 | PerlIOMmap_get_base, | |
4957 | PerlIOBuf_bufsiz, | |
4958 | PerlIOBuf_get_ptr, | |
4959 | PerlIOBuf_get_cnt, | |
4960 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4961 | }; |
4962 | ||
22569500 | 4963 | #endif /* HAS_MMAP */ |
06da4f11 | 4964 | |
9e353e3b | 4965 | PerlIO * |
e87a358a | 4966 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4967 | { |
97aff369 | 4968 | dVAR; |
a1ea730d | 4969 | if (!PL_perlio) { |
14a5cf38 JH |
4970 | PerlIO_stdstreams(aTHX); |
4971 | } | |
a1ea730d | 4972 | return &PL_perlio[1]; |
9e353e3b NIS |
4973 | } |
4974 | ||
9e353e3b | 4975 | PerlIO * |
e87a358a | 4976 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4977 | { |
97aff369 | 4978 | dVAR; |
a1ea730d | 4979 | if (!PL_perlio) { |
14a5cf38 JH |
4980 | PerlIO_stdstreams(aTHX); |
4981 | } | |
a1ea730d | 4982 | return &PL_perlio[2]; |
9e353e3b NIS |
4983 | } |
4984 | ||
9e353e3b | 4985 | PerlIO * |
e87a358a | 4986 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4987 | { |
97aff369 | 4988 | dVAR; |
a1ea730d | 4989 | if (!PL_perlio) { |
14a5cf38 JH |
4990 | PerlIO_stdstreams(aTHX); |
4991 | } | |
a1ea730d | 4992 | return &PL_perlio[3]; |
9e353e3b NIS |
4993 | } |
4994 | ||
4995 | /*--------------------------------------------------------------------------------------*/ | |
4996 | ||
9e353e3b NIS |
4997 | char * |
4998 | PerlIO_getname(PerlIO *f, char *buf) | |
4999 | { | |
14a5cf38 | 5000 | dTHX; |
a15cef0c | 5001 | #ifdef VMS |
73d840c0 | 5002 | char *name = NULL; |
7659f319 | 5003 | bool exported = FALSE; |
14a5cf38 | 5004 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
5005 | if (!stdio) { |
5006 | stdio = PerlIO_exportFILE(f,0); | |
5007 | exported = TRUE; | |
5008 | } | |
5009 | if (stdio) { | |
14a5cf38 | 5010 | name = fgetname(stdio, buf); |
7659f319 CB |
5011 | if (exported) PerlIO_releaseFILE(f,stdio); |
5012 | } | |
73d840c0 | 5013 | return name; |
a15cef0c | 5014 | #else |
8772537c AL |
5015 | PERL_UNUSED_ARG(f); |
5016 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 5017 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 5018 | return NULL; |
a15cef0c | 5019 | #endif |
9e353e3b NIS |
5020 | } |
5021 | ||
5022 | ||
5023 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
5024 | /* |
5025 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 5026 | * terms of above |
14a5cf38 | 5027 | */ |
9e353e3b | 5028 | |
e87a358a NIS |
5029 | #undef PerlIO_fdopen |
5030 | PerlIO * | |
5031 | PerlIO_fdopen(int fd, const char *mode) | |
5032 | { | |
5033 | dTHX; | |
bd61b366 | 5034 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
5035 | } |
5036 | ||
5037 | #undef PerlIO_open | |
5038 | PerlIO * | |
5039 | PerlIO_open(const char *path, const char *mode) | |
5040 | { | |
5041 | dTHX; | |
42d9b98d | 5042 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 5043 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
5044 | } |
5045 | ||
5046 | #undef Perlio_reopen | |
5047 | PerlIO * | |
5048 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
5049 | { | |
5050 | dTHX; | |
42d9b98d | 5051 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 5052 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
5053 | } |
5054 | ||
9e353e3b | 5055 | #undef PerlIO_getc |
6f9d8c32 | 5056 | int |
9e353e3b | 5057 | PerlIO_getc(PerlIO *f) |
760ac839 | 5058 | { |
e87a358a | 5059 | dTHX; |
14a5cf38 | 5060 | STDCHAR buf[1]; |
de009b76 | 5061 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
5062 | return (unsigned char) buf[0]; |
5063 | } | |
5064 | return EOF; | |
313ca112 NIS |
5065 | } |
5066 | ||
5067 | #undef PerlIO_ungetc | |
5068 | int | |
5069 | PerlIO_ungetc(PerlIO *f, int ch) | |
5070 | { | |
e87a358a | 5071 | dTHX; |
14a5cf38 JH |
5072 | if (ch != EOF) { |
5073 | STDCHAR buf = ch; | |
5074 | if (PerlIO_unread(f, &buf, 1) == 1) | |
5075 | return ch; | |
5076 | } | |
5077 | return EOF; | |
760ac839 LW |
5078 | } |
5079 | ||
9e353e3b NIS |
5080 | #undef PerlIO_putc |
5081 | int | |
5082 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 5083 | { |
e87a358a | 5084 | dTHX; |
14a5cf38 JH |
5085 | STDCHAR buf = ch; |
5086 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5087 | } |
5088 | ||
9e353e3b | 5089 | #undef PerlIO_puts |
760ac839 | 5090 | int |
9e353e3b | 5091 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5092 | { |
e87a358a | 5093 | dTHX; |
dcda55fc | 5094 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5095 | } |
5096 | ||
5097 | #undef PerlIO_rewind | |
5098 | void | |
c78749f2 | 5099 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5100 | { |
e87a358a | 5101 | dTHX; |
14a5cf38 JH |
5102 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5103 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5104 | } |
5105 | ||
5106 | #undef PerlIO_vprintf | |
5107 | int | |
5108 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5109 | { | |
14a5cf38 | 5110 | dTHX; |
53ce71d3 | 5111 | SV * sv; |
b83604b4 | 5112 | const char *s; |
14a5cf38 JH |
5113 | STRLEN len; |
5114 | SSize_t wrote; | |
2cc61e15 | 5115 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5116 | va_list apc; |
5117 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5118 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 5119 | #else |
53ce71d3 | 5120 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5121 | #endif |
b83604b4 | 5122 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5123 | wrote = PerlIO_write(f, s, len); |
5124 | SvREFCNT_dec(sv); | |
5125 | return wrote; | |
760ac839 LW |
5126 | } |
5127 | ||
5128 | #undef PerlIO_printf | |
6f9d8c32 | 5129 | int |
14a5cf38 | 5130 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5131 | { |
14a5cf38 JH |
5132 | va_list ap; |
5133 | int result; | |
5134 | va_start(ap, fmt); | |
5135 | result = PerlIO_vprintf(f, fmt, ap); | |
5136 | va_end(ap); | |
5137 | return result; | |
760ac839 LW |
5138 | } |
5139 | ||
5140 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5141 | int |
14a5cf38 | 5142 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5143 | { |
e87a358a | 5144 | dTHX; |
14a5cf38 JH |
5145 | va_list ap; |
5146 | int result; | |
5147 | va_start(ap, fmt); | |
5148 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5149 | va_end(ap); | |
5150 | return result; | |
760ac839 LW |
5151 | } |
5152 | ||
5153 | #undef PerlIO_tmpfile | |
5154 | PerlIO * | |
c78749f2 | 5155 | PerlIO_tmpfile(void) |
760ac839 | 5156 | { |
2941a2e1 JH |
5157 | dTHX; |
5158 | PerlIO *f = NULL; | |
2941a2e1 | 5159 | #ifdef WIN32 |
de009b76 | 5160 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5161 | if (fd >= 0) |
5162 | f = PerlIO_fdopen(fd, "w+b"); | |
5163 | #else /* WIN32 */ | |
460c8493 | 5164 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5165 | int fd = -1; |
5166 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
5167 | const char * const tmpdir = PL_tainting ? NULL : PerlEnv_getenv("TMPDIR"); | |
525f6fe9 | 5168 | SV * sv = NULL; |
2941a2e1 JH |
5169 | /* |
5170 | * I have no idea how portable mkstemp() is ... NI-S | |
5171 | */ | |
7299ca58 | 5172 | if (tmpdir && *tmpdir) { |
0b99e986 | 5173 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5174 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5175 | sv_catpv(sv, tempname + 4); |
5176 | fd = mkstemp(SvPVX(sv)); | |
5177 | } | |
5178 | if (fd < 0) { | |
7299ca58 | 5179 | sv = NULL; |
0b99e986 RGS |
5180 | /* else we try /tmp */ |
5181 | fd = mkstemp(tempname); | |
5182 | } | |
2941a2e1 JH |
5183 | if (fd >= 0) { |
5184 | f = PerlIO_fdopen(fd, "w+"); | |
5185 | if (f) | |
5186 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5187 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5188 | } |
ef8d46e8 | 5189 | SvREFCNT_dec(sv); |
2941a2e1 | 5190 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5191 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5192 | |
085e731f CB |
5193 | if (stdio) |
5194 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5195 | ||
2941a2e1 JH |
5196 | # endif /* else HAS_MKSTEMP */ |
5197 | #endif /* else WIN32 */ | |
5198 | return f; | |
760ac839 LW |
5199 | } |
5200 | ||
6f9d8c32 NIS |
5201 | #undef HAS_FSETPOS |
5202 | #undef HAS_FGETPOS | |
5203 | ||
22569500 NIS |
5204 | #endif /* USE_SFIO */ |
5205 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5206 | |
9e353e3b | 5207 | /*======================================================================================*/ |
14a5cf38 | 5208 | /* |
71200d45 NIS |
5209 | * Now some functions in terms of above which may be needed even if we are |
5210 | * not in true PerlIO mode | |
9e353e3b | 5211 | */ |
188f0c84 YO |
5212 | const char * |
5213 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5214 | { | |
5215 | dVAR; | |
8b850bd5 NC |
5216 | const char *direction = NULL; |
5217 | SV *layers; | |
188f0c84 YO |
5218 | /* |
5219 | * Need to supply default layer info from open.pm | |
5220 | */ | |
8b850bd5 NC |
5221 | |
5222 | if (!PL_curcop) | |
5223 | return NULL; | |
5224 | ||
5225 | if (mode && mode[0] != 'r') { | |
5226 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5227 | direction = "open>"; | |
5228 | } else { | |
5229 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5230 | direction = "open<"; | |
188f0c84 | 5231 | } |
8b850bd5 NC |
5232 | if (!direction) |
5233 | return NULL; | |
5234 | ||
20439bc7 | 5235 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5236 | |
5237 | assert(layers); | |
5238 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5239 | } |
5240 | ||
9e353e3b | 5241 | |
760ac839 LW |
5242 | #ifndef HAS_FSETPOS |
5243 | #undef PerlIO_setpos | |
5244 | int | |
766a733e | 5245 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5246 | { |
14a5cf38 JH |
5247 | dTHX; |
5248 | if (SvOK(pos)) { | |
5249 | STRLEN len; | |
c4420975 | 5250 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5251 | if (f && len == sizeof(Off_t)) |
5252 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5253 | } | |
93189314 | 5254 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5255 | return -1; |
760ac839 | 5256 | } |
c411622e | 5257 | #else |
c411622e | 5258 | #undef PerlIO_setpos |
5259 | int | |
766a733e | 5260 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5261 | { |
14a5cf38 JH |
5262 | dTHX; |
5263 | if (SvOK(pos)) { | |
5264 | STRLEN len; | |
c4420975 | 5265 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5266 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5267 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5268 | return fsetpos64(f, fpos); |
d9b3e12d | 5269 | #else |
14a5cf38 | 5270 | return fsetpos(f, fpos); |
d9b3e12d | 5271 | #endif |
14a5cf38 | 5272 | } |
766a733e | 5273 | } |
93189314 | 5274 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5275 | return -1; |
c411622e | 5276 | } |
5277 | #endif | |
760ac839 LW |
5278 | |
5279 | #ifndef HAS_FGETPOS | |
5280 | #undef PerlIO_getpos | |
5281 | int | |
766a733e | 5282 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5283 | { |
14a5cf38 JH |
5284 | dTHX; |
5285 | Off_t posn = PerlIO_tell(f); | |
5286 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5287 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5288 | } |
c411622e | 5289 | #else |
c411622e | 5290 | #undef PerlIO_getpos |
5291 | int | |
766a733e | 5292 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5293 | { |
14a5cf38 JH |
5294 | dTHX; |
5295 | Fpos_t fpos; | |
5296 | int code; | |
2d4389e4 | 5297 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5298 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5299 | #else |
14a5cf38 | 5300 | code = fgetpos(f, &fpos); |
d9b3e12d | 5301 | #endif |
14a5cf38 JH |
5302 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5303 | return code; | |
c411622e | 5304 | } |
5305 | #endif | |
760ac839 LW |
5306 | |
5307 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5308 | ||
5309 | int | |
c78749f2 | 5310 | vprintf(char *pat, char *args) |
662a7e3f CS |
5311 | { |
5312 | _doprnt(pat, args, stdout); | |
22569500 | 5313 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5314 | * value */ |
662a7e3f CS |
5315 | } |
5316 | ||
5317 | int | |
c78749f2 | 5318 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5319 | { |
5320 | _doprnt(pat, args, fd); | |
22569500 | 5321 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5322 | * value */ |
760ac839 LW |
5323 | } |
5324 | ||
5325 | #endif | |
5326 | ||
5327 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5328 | int |
8ac85365 | 5329 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5330 | { |
8ff9a42b | 5331 | dTHX; |
d9fad198 | 5332 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5333 | PERL_UNUSED_CONTEXT; |
5334 | ||
1208b3dd JH |
5335 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5336 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5337 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5338 | } |
1208b3dd | 5339 | #endif |
14a5cf38 | 5340 | return val; |
760ac839 LW |
5341 | } |
5342 | #endif | |
5343 | ||
5344 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5345 | int |
14a5cf38 | 5346 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5347 | { |
14a5cf38 JH |
5348 | va_list ap; |
5349 | int result; | |
5350 | va_start(ap, fmt); | |
5351 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5352 | va_end(ap); | |
5353 | return result; | |
760ac839 LW |
5354 | } |
5355 | #endif | |
9cfa90c0 NC |
5356 | |
5357 | /* | |
5358 | * Local variables: | |
5359 | * c-indentation-style: bsd | |
5360 | * c-basic-offset: 4 | |
5361 | * indent-tabs-mode: t | |
5362 | * End: | |
5363 | * | |
37442d52 RGS |
5364 | * ex: set ts=8 sts=4 sw=4 noet: |
5365 | */ |