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 | |
138 | # if defined(atarist) || defined(__MINT__) | |
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 JH |
616 | IV i; |
617 | for (i = 0; i < list->cur; i++) { | |
618 | if (list->array[i].arg) | |
619 | SvREFCNT_dec(list->array[i].arg); | |
620 | } | |
621 | Safefree(list->array); | |
622 | } | |
623 | Safefree(list); | |
624 | } | |
625 | } | |
fcf2db38 NIS |
626 | } |
627 | ||
628 | void | |
3a1ee7e8 | 629 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 630 | { |
97aff369 | 631 | dVAR; |
334e202e | 632 | PerlIO_pair_t *p; |
b37c2d43 AL |
633 | PERL_UNUSED_CONTEXT; |
634 | ||
14a5cf38 JH |
635 | if (list->cur >= list->len) { |
636 | list->len += 8; | |
637 | if (list->array) | |
638 | Renew(list->array, list->len, PerlIO_pair_t); | |
639 | else | |
a02a5408 | 640 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
641 | } |
642 | p = &(list->array[list->cur++]); | |
643 | p->funcs = funcs; | |
644 | if ((p->arg = arg)) { | |
f84c484e | 645 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 646 | } |
fcf2db38 NIS |
647 | } |
648 | ||
3a1ee7e8 NIS |
649 | PerlIO_list_t * |
650 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
651 | { | |
b37c2d43 | 652 | PerlIO_list_t *list = NULL; |
694c95cf JH |
653 | if (proto) { |
654 | int i; | |
655 | list = PerlIO_list_alloc(aTHX); | |
656 | for (i=0; i < proto->cur; i++) { | |
a951d81d BL |
657 | SV *arg = proto->array[i].arg; |
658 | #ifdef sv_dup | |
659 | if (arg && param) | |
660 | arg = sv_dup(arg, param); | |
661 | #else | |
662 | PERL_UNUSED_ARG(param); | |
663 | #endif | |
694c95cf JH |
664 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
665 | } | |
3a1ee7e8 NIS |
666 | } |
667 | return list; | |
668 | } | |
4a4a6116 | 669 | |
05d1247b | 670 | void |
3a1ee7e8 | 671 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 672 | { |
3aaf42a7 | 673 | #ifdef USE_ITHREADS |
3a1ee7e8 NIS |
674 | PerlIO **table = &proto->Iperlio; |
675 | PerlIO *f; | |
676 | PL_perlio = NULL; | |
677 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
678 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
679 | PerlIO_allocate(aTHX); /* root slot is never used */ | |
a25429c6 | 680 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
681 | while ((f = *table)) { |
682 | int i; | |
683 | table = (PerlIO **) (f++); | |
684 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
685 | if (*f) { | |
93a8090d | 686 | (void) fp_dup(f, 0, param); |
3a1ee7e8 NIS |
687 | } |
688 | f++; | |
689 | } | |
690 | } | |
1b6737cc | 691 | #else |
a25429c6 | 692 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
693 | PERL_UNUSED_ARG(proto); |
694 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 695 | #endif |
9a6404c5 DM |
696 | } |
697 | ||
698 | void | |
13621cfb NIS |
699 | PerlIO_destruct(pTHX) |
700 | { | |
97aff369 | 701 | dVAR; |
a1ea730d | 702 | PerlIO **table = &PL_perlio; |
14a5cf38 | 703 | PerlIO *f; |
694c95cf | 704 | #ifdef USE_ITHREADS |
a25429c6 | 705 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 706 | #endif |
14a5cf38 JH |
707 | while ((f = *table)) { |
708 | int i; | |
709 | table = (PerlIO **) (f++); | |
710 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
711 | PerlIO *x = f; | |
dcda55fc | 712 | const PerlIOl *l; |
14a5cf38 JH |
713 | while ((l = *x)) { |
714 | if (l->tab->kind & PERLIO_K_DESTRUCT) { | |
715 | PerlIO_debug("Destruct popping %s\n", l->tab->name); | |
716 | PerlIO_flush(x); | |
717 | PerlIO_pop(aTHX_ x); | |
718 | } | |
719 | else { | |
720 | x = PerlIONext(x); | |
721 | } | |
722 | } | |
723 | f++; | |
724 | } | |
725 | } | |
13621cfb NIS |
726 | } |
727 | ||
728 | void | |
a999f61b | 729 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 730 | { |
dcda55fc | 731 | const PerlIOl *l = *f; |
14a5cf38 | 732 | if (l) { |
fe5a182c | 733 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, l->tab->name); |
14a5cf38 JH |
734 | if (l->tab->Popped) { |
735 | /* | |
736 | * If popped returns non-zero do not free its layer structure | |
737 | * it has either done so itself, or it is shared and still in | |
71200d45 | 738 | * use |
14a5cf38 | 739 | */ |
f62ce20a | 740 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
741 | return; |
742 | } | |
b47cad08 | 743 | *f = l->next; |
3a1ee7e8 | 744 | Safefree(l); |
a8c08ecd | 745 | } |
6f9d8c32 NIS |
746 | } |
747 | ||
39f7a870 JH |
748 | /* Return as an array the stack of layers on a filehandle. Note that |
749 | * the stack is returned top-first in the array, and there are three | |
750 | * times as many array elements as there are layers in the stack: the | |
751 | * first element of a layer triplet is the name, the second one is the | |
752 | * arguments, and the third one is the flags. */ | |
753 | ||
754 | AV * | |
755 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
756 | { | |
97aff369 | 757 | dVAR; |
dcda55fc | 758 | AV * const av = newAV(); |
39f7a870 | 759 | |
dcda55fc AL |
760 | if (PerlIOValid(f)) { |
761 | PerlIOl *l = PerlIOBase(f); | |
762 | ||
763 | while (l) { | |
92e45a3e NC |
764 | /* There is some collusion in the implementation of |
765 | XS_PerlIO_get_layers - it knows that name and flags are | |
766 | generated as fresh SVs here, and takes advantage of that to | |
767 | "copy" them by taking a reference. If it changes here, it needs | |
768 | to change there too. */ | |
dcda55fc AL |
769 | SV * const name = l->tab && l->tab->name ? |
770 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
771 | SV * const arg = l->tab && l->tab->Getarg ? | |
772 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
773 | av_push(av, name); | |
774 | av_push(av, arg); | |
775 | av_push(av, newSViv((IV)l->flags)); | |
776 | l = l->next; | |
777 | } | |
778 | } | |
39f7a870 | 779 | |
dcda55fc | 780 | return av; |
39f7a870 JH |
781 | } |
782 | ||
9e353e3b | 783 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 784 | /* |
71200d45 | 785 | * XS Interface for perl code |
14a5cf38 | 786 | */ |
9e353e3b | 787 | |
fcf2db38 | 788 | PerlIO_funcs * |
2edd7e44 | 789 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 790 | { |
27da23d5 | 791 | dVAR; |
14a5cf38 JH |
792 | IV i; |
793 | if ((SSize_t) len <= 0) | |
794 | len = strlen(name); | |
3a1ee7e8 | 795 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 796 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 797 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 798 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
799 | return f; |
800 | } | |
801 | } | |
3a1ee7e8 NIS |
802 | if (load && PL_subname && PL_def_layerlist |
803 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
804 | if (PL_in_load_module) { |
805 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
806 | return NULL; | |
807 | } else { | |
396482e1 | 808 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 809 | SV * const layer = newSVpvn(name, len); |
780a5241 | 810 | CV * const cv = Perl_get_cvn_flags(aTHX_ STR_WITH_LEN("PerlIO::Layer::NoWarnings"), 0); |
46c461b5 | 811 | ENTER; |
d7a09b41 | 812 | SAVEINT(PL_in_load_module); |
c9bca74a | 813 | if (cv) { |
9cfa90c0 | 814 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 815 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 816 | } |
d7a09b41 SR |
817 | PL_in_load_module++; |
818 | /* | |
819 | * The two SVs are magically freed by load_module | |
820 | */ | |
a0714e2c | 821 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
822 | PL_in_load_module--; |
823 | LEAVE; | |
824 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
825 | } | |
14a5cf38 JH |
826 | } |
827 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
828 | return NULL; | |
f3862f8b NIS |
829 | } |
830 | ||
2a1bc955 | 831 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
832 | |
833 | static int | |
834 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
835 | { | |
14a5cf38 | 836 | if (SvROK(sv)) { |
159b6efe | 837 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
838 | PerlIO * const ifp = IoIFP(io); |
839 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
840 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
841 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
842 | } |
843 | return 0; | |
b13b2135 NIS |
844 | } |
845 | ||
846 | static int | |
847 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
848 | { | |
14a5cf38 | 849 | if (SvROK(sv)) { |
159b6efe | 850 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
851 | PerlIO * const ifp = IoIFP(io); |
852 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
853 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
854 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
855 | } |
856 | return 0; | |
b13b2135 NIS |
857 | } |
858 | ||
859 | static int | |
860 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
861 | { | |
be2597df | 862 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 863 | return 0; |
b13b2135 NIS |
864 | } |
865 | ||
866 | static int | |
867 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
868 | { | |
be2597df | 869 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 870 | return 0; |
b13b2135 NIS |
871 | } |
872 | ||
873 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
874 | perlio_mg_get, |
875 | perlio_mg_set, | |
22569500 | 876 | NULL, /* len */ |
14a5cf38 JH |
877 | perlio_mg_clear, |
878 | perlio_mg_free | |
b13b2135 NIS |
879 | }; |
880 | ||
881 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
882 | { | |
14a5cf38 | 883 | dXSARGS; |
dcda55fc AL |
884 | SV * const sv = SvRV(ST(1)); |
885 | AV * const av = newAV(); | |
14a5cf38 JH |
886 | MAGIC *mg; |
887 | int count = 0; | |
888 | int i; | |
ad64d0ec | 889 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
890 | SvRMAGICAL_off(sv); |
891 | mg = mg_find(sv, PERL_MAGIC_ext); | |
892 | mg->mg_virtual = &perlio_vtab; | |
893 | mg_magical(sv); | |
be2597df | 894 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
895 | for (i = 2; i < items; i++) { |
896 | STRLEN len; | |
dcda55fc AL |
897 | const char * const name = SvPV_const(ST(i), len); |
898 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 899 | if (layer) { |
b37c2d43 | 900 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
901 | } |
902 | else { | |
903 | ST(count) = ST(i); | |
904 | count++; | |
905 | } | |
906 | } | |
907 | SvREFCNT_dec(av); | |
908 | XSRETURN(count); | |
909 | } | |
910 | ||
22569500 | 911 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 912 | |
e3f3bf95 NIS |
913 | SV * |
914 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 915 | { |
da51bb9b | 916 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 917 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 918 | return sv; |
e3f3bf95 NIS |
919 | } |
920 | ||
5ca1d77f | 921 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 922 | { |
37725cdc | 923 | /* This is used as a %SIG{__WARN__} handler to supress warnings |
c9bca74a NIS |
924 | during loading of layers. |
925 | */ | |
97aff369 | 926 | dVAR; |
c9bca74a | 927 | dXSARGS; |
58c0efa5 | 928 | PERL_UNUSED_ARG(cv); |
c9bca74a | 929 | if (items) |
e62f0680 | 930 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
931 | XSRETURN(0); |
932 | } | |
933 | ||
5ca1d77f | 934 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 935 | { |
97aff369 | 936 | dVAR; |
14a5cf38 | 937 | dXSARGS; |
58c0efa5 | 938 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
939 | if (items < 2) |
940 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
941 | else { | |
de009b76 | 942 | STRLEN len; |
46c461b5 | 943 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 944 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 945 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
946 | ST(0) = |
947 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
948 | &PL_sv_undef; | |
949 | XSRETURN(1); | |
950 | } | |
0c4f7ff0 NIS |
951 | } |
952 | ||
e3f3bf95 NIS |
953 | void |
954 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
955 | { | |
97aff369 | 956 | dVAR; |
3a1ee7e8 NIS |
957 | if (!PL_known_layers) |
958 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 959 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 960 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
961 | } |
962 | ||
1141d9f8 | 963 | int |
fcf2db38 | 964 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 965 | { |
97aff369 | 966 | dVAR; |
14a5cf38 JH |
967 | if (names) { |
968 | const char *s = names; | |
969 | while (*s) { | |
970 | while (isSPACE(*s) || *s == ':') | |
971 | s++; | |
972 | if (*s) { | |
973 | STRLEN llen = 0; | |
974 | const char *e = s; | |
bd61b366 | 975 | const char *as = NULL; |
14a5cf38 JH |
976 | STRLEN alen = 0; |
977 | if (!isIDFIRST(*s)) { | |
978 | /* | |
979 | * Message is consistent with how attribute lists are | |
980 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 981 | * seen as an invalid separator character. |
14a5cf38 | 982 | */ |
de009b76 | 983 | const char q = ((*s == '\'') ? '"' : '\''); |
99ef548b | 984 | if (ckWARN(WARN_LAYER)) |
22569500 | 985 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
b4581f09 | 986 | "Invalid separator character %c%c%c in PerlIO layer specification %s", |
1e616cf5 | 987 | q, *s, q, s); |
93189314 | 988 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
989 | return -1; |
990 | } | |
991 | do { | |
992 | e++; | |
993 | } while (isALNUM(*e)); | |
994 | llen = e - s; | |
995 | if (*e == '(') { | |
996 | int nesting = 1; | |
997 | as = ++e; | |
998 | while (nesting) { | |
999 | switch (*e++) { | |
1000 | case ')': | |
1001 | if (--nesting == 0) | |
1002 | alen = (e - 1) - as; | |
1003 | break; | |
1004 | case '(': | |
1005 | ++nesting; | |
1006 | break; | |
1007 | case '\\': | |
1008 | /* | |
1009 | * It's a nul terminated string, not allowed | |
1010 | * to \ the terminating null. Anything other | |
71200d45 | 1011 | * character is passed over. |
14a5cf38 JH |
1012 | */ |
1013 | if (*e++) { | |
1014 | break; | |
1015 | } | |
1016 | /* | |
71200d45 | 1017 | * Drop through |
14a5cf38 JH |
1018 | */ |
1019 | case '\0': | |
1020 | e--; | |
22569500 NIS |
1021 | if (ckWARN(WARN_LAYER)) |
1022 | Perl_warner(aTHX_ packWARN(WARN_LAYER), | |
b4581f09 | 1023 | "Argument list not closed for PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1024 | (int) (e - s), s); |
1025 | return -1; | |
1026 | default: | |
1027 | /* | |
71200d45 | 1028 | * boring. |
14a5cf38 JH |
1029 | */ |
1030 | break; | |
1031 | } | |
1032 | } | |
1033 | } | |
1034 | if (e > s) { | |
46c461b5 | 1035 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1036 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1037 | if (layer) { | |
a951d81d BL |
1038 | SV *arg = NULL; |
1039 | if (as) | |
1040 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1041 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d BL |
1042 | (arg) ? arg : &PL_sv_undef); |
1043 | if (arg) | |
1044 | SvREFCNT_dec(arg); | |
14a5cf38 JH |
1045 | } |
1046 | else { | |
041457d9 | 1047 | if (ckWARN(WARN_LAYER)) |
b4581f09 | 1048 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1049 | (int) llen, s); |
1050 | return -1; | |
1051 | } | |
1052 | } | |
1053 | s = e; | |
1054 | } | |
1055 | } | |
1056 | } | |
1057 | return 0; | |
1141d9f8 NIS |
1058 | } |
1059 | ||
dfebf958 | 1060 | void |
fcf2db38 | 1061 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1062 | { |
97aff369 | 1063 | dVAR; |
27da23d5 | 1064 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1065 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1066 | tab = &PerlIO_crlf; |
846be114 | 1067 | #else |
6ce75a77 | 1068 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1069 | tab = &PerlIO_stdio; |
846be114 | 1070 | #endif |
14a5cf38 | 1071 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1072 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1073 | &PL_sv_undef); |
dfebf958 NIS |
1074 | } |
1075 | ||
e3f3bf95 | 1076 | SV * |
14a5cf38 | 1077 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1078 | { |
14a5cf38 | 1079 | return av->array[n].arg; |
e3f3bf95 NIS |
1080 | } |
1081 | ||
f3862f8b | 1082 | PerlIO_funcs * |
14a5cf38 | 1083 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1084 | { |
14a5cf38 JH |
1085 | if (n >= 0 && n < av->cur) { |
1086 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1087 | av->array[n].funcs->name); | |
1088 | return av->array[n].funcs; | |
1089 | } | |
1090 | if (!def) | |
1091 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1092 | return def; | |
e3f3bf95 NIS |
1093 | } |
1094 | ||
4ec2216f NIS |
1095 | IV |
1096 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1097 | { | |
8772537c AL |
1098 | PERL_UNUSED_ARG(mode); |
1099 | PERL_UNUSED_ARG(arg); | |
1100 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1101 | if (PerlIOValid(f)) { |
1102 | PerlIO_flush(f); | |
1103 | PerlIO_pop(aTHX_ f); | |
1104 | return 0; | |
1105 | } | |
1106 | return -1; | |
1107 | } | |
1108 | ||
27da23d5 | 1109 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1110 | sizeof(PerlIO_funcs), |
1111 | "pop", | |
1112 | 0, | |
1113 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1114 | PerlIOPop_pushed, | |
1115 | NULL, | |
1116 | NULL, | |
1117 | NULL, | |
1118 | NULL, | |
1119 | NULL, | |
1120 | NULL, | |
1121 | NULL, | |
1122 | NULL, | |
1123 | NULL, | |
1124 | NULL, | |
de009b76 AL |
1125 | NULL, |
1126 | NULL, | |
4ec2216f NIS |
1127 | NULL, /* flush */ |
1128 | NULL, /* fill */ | |
1129 | NULL, | |
1130 | NULL, | |
1131 | NULL, | |
1132 | NULL, | |
1133 | NULL, /* get_base */ | |
1134 | NULL, /* get_bufsiz */ | |
1135 | NULL, /* get_ptr */ | |
1136 | NULL, /* get_cnt */ | |
1137 | NULL, /* set_ptrcnt */ | |
1138 | }; | |
1139 | ||
fcf2db38 | 1140 | PerlIO_list_t * |
e3f3bf95 NIS |
1141 | PerlIO_default_layers(pTHX) |
1142 | { | |
97aff369 | 1143 | dVAR; |
3a1ee7e8 | 1144 | if (!PL_def_layerlist) { |
bd61b366 | 1145 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1146 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1147 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1148 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1149 | #if defined(WIN32) |
27da23d5 | 1150 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1151 | #if 0 |
14a5cf38 | 1152 | osLayer = &PerlIO_win32; |
0c4128ad | 1153 | #endif |
2f8118af | 1154 | #endif |
27da23d5 JH |
1155 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1156 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1157 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1158 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1159 | #ifdef HAS_MMAP |
27da23d5 | 1160 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1161 | #endif |
27da23d5 JH |
1162 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1163 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1164 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1165 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1166 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1167 | &PL_sv_undef); | |
1168 | if (s) { | |
3a1ee7e8 | 1169 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1170 | } |
1171 | else { | |
3a1ee7e8 | 1172 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1173 | } |
1141d9f8 | 1174 | } |
3a1ee7e8 NIS |
1175 | if (PL_def_layerlist->cur < 2) { |
1176 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1177 | } |
3a1ee7e8 | 1178 | return PL_def_layerlist; |
e3f3bf95 NIS |
1179 | } |
1180 | ||
0c4f7ff0 NIS |
1181 | void |
1182 | Perl_boot_core_PerlIO(pTHX) | |
1183 | { | |
1184 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1185 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1186 | __FILE__); | |
0c4f7ff0 | 1187 | #endif |
14a5cf38 | 1188 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1189 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1190 | } |
e3f3bf95 NIS |
1191 | |
1192 | PerlIO_funcs * | |
1193 | PerlIO_default_layer(pTHX_ I32 n) | |
1194 | { | |
97aff369 | 1195 | dVAR; |
46c461b5 | 1196 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1197 | if (n < 0) |
1198 | n += av->cur; | |
27da23d5 | 1199 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1200 | } |
1201 | ||
a999f61b NIS |
1202 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1203 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1204 | |
1205 | void | |
1141d9f8 | 1206 | PerlIO_stdstreams(pTHX) |
60382766 | 1207 | { |
97aff369 | 1208 | dVAR; |
a1ea730d | 1209 | if (!PL_perlio) { |
14a5cf38 JH |
1210 | PerlIO_allocate(aTHX); |
1211 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); | |
1212 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1213 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1214 | } | |
60382766 NIS |
1215 | } |
1216 | ||
1217 | PerlIO * | |
27da23d5 | 1218 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1219 | { |
2dc2558e NIS |
1220 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
1221 | mismatch: | |
1222 | Perl_croak(aTHX_ "Layer does not match this perl"); | |
1223 | } | |
1224 | if (tab->size) { | |
b464bac0 | 1225 | PerlIOl *l; |
2dc2558e NIS |
1226 | if (tab->size < sizeof(PerlIOl)) { |
1227 | goto mismatch; | |
1228 | } | |
1229 | /* Real layer with a data area */ | |
002e75cf JH |
1230 | if (f) { |
1231 | char *temp; | |
1232 | Newxz(temp, tab->size, char); | |
1233 | l = (PerlIOl*)temp; | |
1234 | if (l) { | |
1235 | l->next = *f; | |
1236 | l->tab = (PerlIO_funcs*) tab; | |
1237 | *f = l; | |
1238 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1239 | (void*)f, tab->name, | |
1240 | (mode) ? mode : "(Null)", (void*)arg); | |
1241 | if (*l->tab->Pushed && | |
1242 | (*l->tab->Pushed) | |
1243 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1244 | PerlIO_pop(aTHX_ f); | |
1245 | return NULL; | |
1246 | } | |
2dc2558e | 1247 | } |
002e75cf JH |
1248 | else |
1249 | return NULL; | |
2dc2558e NIS |
1250 | } |
1251 | } | |
1252 | else if (f) { | |
1253 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1254 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1255 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1256 | if (tab->Pushed && |
27da23d5 | 1257 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1258 | return NULL; |
14a5cf38 JH |
1259 | } |
1260 | } | |
1261 | return f; | |
60382766 NIS |
1262 | } |
1263 | ||
dfebf958 | 1264 | IV |
86e05cf2 NIS |
1265 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1266 | { | |
1267 | if (PerlIOValid(f)) { | |
1268 | /* Is layer suitable for raw stream ? */ | |
1269 | if (PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1270 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1271 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1272 | } | |
1273 | else { | |
1274 | /* Not suitable - pop it */ | |
1275 | PerlIO_pop(aTHX_ f); | |
1276 | } | |
1277 | return 0; | |
1278 | } | |
1279 | return -1; | |
1280 | } | |
1281 | ||
1282 | IV | |
2dc2558e | 1283 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1284 | { |
8772537c AL |
1285 | PERL_UNUSED_ARG(mode); |
1286 | PERL_UNUSED_ARG(arg); | |
1287 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1288 | |
04892f78 | 1289 | if (PerlIOValid(f)) { |
86e05cf2 | 1290 | PerlIO *t; |
de009b76 | 1291 | const PerlIOl *l; |
14a5cf38 | 1292 | PerlIO_flush(f); |
86e05cf2 NIS |
1293 | /* |
1294 | * Strip all layers that are not suitable for a raw stream | |
1295 | */ | |
1296 | t = f; | |
1297 | while (t && (l = *t)) { | |
1298 | if (l->tab->Binmode) { | |
1299 | /* Has a handler - normal case */ | |
9d97e8b8 | 1300 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1301 | if (*t == l) { |
1302 | /* Layer still there - move down a layer */ | |
1303 | t = PerlIONext(t); | |
1304 | } | |
1305 | } | |
1306 | else { | |
1307 | return -1; | |
1308 | } | |
14a5cf38 JH |
1309 | } |
1310 | else { | |
86e05cf2 NIS |
1311 | /* No handler - pop it */ |
1312 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1313 | } |
1314 | } | |
86e05cf2 NIS |
1315 | if (PerlIOValid(f)) { |
1316 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); | |
1317 | return 0; | |
1318 | } | |
14a5cf38 JH |
1319 | } |
1320 | return -1; | |
dfebf958 NIS |
1321 | } |
1322 | ||
ac27b0f5 | 1323 | int |
14a5cf38 | 1324 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1325 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1326 | { |
14a5cf38 JH |
1327 | int code = 0; |
1328 | while (n < max) { | |
8772537c | 1329 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1330 | if (tab) { |
1331 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1332 | code = -1; | |
1333 | break; | |
1334 | } | |
1335 | } | |
1336 | n++; | |
1337 | } | |
1338 | return code; | |
e3f3bf95 NIS |
1339 | } |
1340 | ||
1341 | int | |
ac27b0f5 NIS |
1342 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1343 | { | |
14a5cf38 | 1344 | int code = 0; |
53f1b6d2 | 1345 | if (f && names) { |
8772537c | 1346 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1347 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1348 | if (code == 0) { | |
d9dac8cd | 1349 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1350 | } |
3a1ee7e8 | 1351 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1352 | } |
14a5cf38 | 1353 | return code; |
ac27b0f5 NIS |
1354 | } |
1355 | ||
f3862f8b | 1356 | |
60382766 | 1357 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1358 | /* |
71200d45 | 1359 | * Given the abstraction above the public API functions |
14a5cf38 | 1360 | */ |
60382766 NIS |
1361 | |
1362 | int | |
f5b9d040 | 1363 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1364 | { |
68b5363f PD |
1365 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
1366 | (PerlIOBase(f)) ? PerlIOBase(f)->tab->name : "(Null)", | |
1367 | iotype, mode, (names) ? names : "(Null)"); | |
1368 | ||
03c0554d NIS |
1369 | if (names) { |
1370 | /* Do not flush etc. if (e.g.) switching encodings. | |
1371 | if a pushed layer knows it needs to flush lower layers | |
1372 | (for example :unix which is never going to call them) | |
1373 | it can do the flush when it is pushed. | |
1374 | */ | |
1375 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1376 | } | |
1377 | else { | |
86e05cf2 | 1378 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1379 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1380 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1381 | O_BINARY so we can look for it in mode. | |
1382 | */ | |
1383 | if (!(mode & O_BINARY)) { | |
1384 | /* Text mode */ | |
86e05cf2 NIS |
1385 | /* FIXME?: Looking down the layer stack seems wrong, |
1386 | but is a way of reaching past (say) an encoding layer | |
1387 | to flip CRLF-ness of the layer(s) below | |
1388 | */ | |
03c0554d NIS |
1389 | while (*f) { |
1390 | /* Perhaps we should turn on bottom-most aware layer | |
1391 | e.g. Ilya's idea that UNIX TTY could serve | |
1392 | */ | |
1393 | if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { | |
1394 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1395 | /* Not in text mode - flush any pending stuff and flip it */ | |
1396 | PerlIO_flush(f); | |
1397 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1398 | } | |
1399 | /* Only need to turn it on in one layer so we are done */ | |
1400 | return TRUE; | |
ed53a2bb | 1401 | } |
03c0554d | 1402 | f = PerlIONext(f); |
14a5cf38 | 1403 | } |
03c0554d NIS |
1404 | /* Not finding a CRLF aware layer presumably means we are binary |
1405 | which is not what was requested - so we failed | |
1406 | We _could_ push :crlf layer but so could caller | |
1407 | */ | |
1408 | return FALSE; | |
14a5cf38 | 1409 | } |
6ce75a77 | 1410 | #endif |
86e05cf2 NIS |
1411 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1412 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1413 | */ |
a0714e2c | 1414 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1415 | } |
f5b9d040 NIS |
1416 | } |
1417 | ||
f5b9d040 | 1418 | int |
e87a358a | 1419 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1420 | { |
37725cdc | 1421 | if (PerlIOValid(f)) { |
46c461b5 | 1422 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1423 | if (tab && tab->Close) |
1424 | return (*tab->Close)(aTHX_ f); | |
1425 | else | |
1426 | return PerlIOBase_close(aTHX_ f); | |
1427 | } | |
14a5cf38 | 1428 | else { |
93189314 | 1429 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1430 | return -1; |
1431 | } | |
76ced9ad NIS |
1432 | } |
1433 | ||
b931b1d9 | 1434 | int |
e87a358a | 1435 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1436 | { |
de009b76 | 1437 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1438 | while (PerlIOValid(f)) { |
1439 | PerlIO_pop(aTHX_ f); | |
f6c77cf1 | 1440 | } |
14a5cf38 | 1441 | return code; |
b931b1d9 NIS |
1442 | } |
1443 | ||
b931b1d9 | 1444 | int |
e87a358a | 1445 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1446 | { |
97aff369 | 1447 | dVAR; |
b32dd47e | 1448 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1449 | } |
1450 | ||
1141d9f8 | 1451 | |
fcf2db38 | 1452 | static PerlIO_funcs * |
2edd7e44 NIS |
1453 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1454 | { | |
97aff369 | 1455 | dVAR; |
14a5cf38 | 1456 | /* |
71200d45 | 1457 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1458 | */ |
75208dda RGS |
1459 | if (SvTYPE(sv) < SVt_PVAV) { |
1460 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); | |
1461 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1462 | * but could happen anyway in smaller installs or with PAR */ | |
1463 | if (!f && ckWARN(WARN_LAYER)) | |
1464 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); | |
1465 | return f; | |
1466 | } | |
14a5cf38 JH |
1467 | |
1468 | /* | |
71200d45 | 1469 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1470 | */ |
1471 | switch (SvTYPE(sv)) { | |
1472 | case SVt_PVAV: | |
6a245ed1 | 1473 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1474 | case SVt_PVHV: |
6a245ed1 | 1475 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1476 | case SVt_PVCV: |
6a245ed1 | 1477 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1478 | case SVt_PVGV: |
6a245ed1 | 1479 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1480 | default: |
1481 | return NULL; | |
14a5cf38 | 1482 | } |
2edd7e44 NIS |
1483 | } |
1484 | ||
fcf2db38 | 1485 | PerlIO_list_t * |
14a5cf38 JH |
1486 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1487 | const char *mode, int narg, SV **args) | |
1488 | { | |
97aff369 | 1489 | dVAR; |
14a5cf38 JH |
1490 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1491 | int incdef = 1; | |
a1ea730d | 1492 | if (!PL_perlio) |
14a5cf38 JH |
1493 | PerlIO_stdstreams(aTHX); |
1494 | if (narg) { | |
dcda55fc | 1495 | SV * const arg = *args; |
14a5cf38 | 1496 | /* |
71200d45 NIS |
1497 | * If it is a reference but not an object see if we have a handler |
1498 | * for it | |
14a5cf38 JH |
1499 | */ |
1500 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1501 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1502 | if (handler) { |
3a1ee7e8 NIS |
1503 | def = PerlIO_list_alloc(aTHX); |
1504 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1505 | incdef = 0; |
1506 | } | |
1507 | /* | |
e934609f | 1508 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1509 | * something sensible else we will just stringfy and open |
71200d45 | 1510 | * resulting string. |
14a5cf38 JH |
1511 | */ |
1512 | } | |
1513 | } | |
9fe371da | 1514 | if (!layers || !*layers) |
11bcd5da | 1515 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1516 | if (layers && *layers) { |
1517 | PerlIO_list_t *av; | |
1518 | if (incdef) { | |
a951d81d | 1519 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1520 | } |
1521 | else { | |
1522 | av = def; | |
1523 | } | |
0cff2cf3 NIS |
1524 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1525 | return av; | |
1526 | } | |
1527 | else { | |
1528 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1529 | return NULL; |
0cff2cf3 | 1530 | } |
14a5cf38 JH |
1531 | } |
1532 | else { | |
1533 | if (incdef) | |
1534 | def->refcnt++; | |
1535 | return def; | |
1536 | } | |
ee518936 NIS |
1537 | } |
1538 | ||
1539 | PerlIO * | |
14a5cf38 JH |
1540 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1541 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1542 | { | |
97aff369 | 1543 | dVAR; |
14a5cf38 JH |
1544 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1545 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1546 | if (!layers || !*layers) |
11bcd5da | 1547 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1548 | if (layers && *layers) |
1549 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1550 | } | |
1551 | } | |
1552 | else { | |
de009b76 | 1553 | PerlIO_list_t *layera; |
14a5cf38 JH |
1554 | IV n; |
1555 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1556 | if (PerlIOValid(f)) { |
14a5cf38 | 1557 | /* |
71200d45 NIS |
1558 | * This is "reopen" - it is not tested as perl does not use it |
1559 | * yet | |
14a5cf38 JH |
1560 | */ |
1561 | PerlIOl *l = *f; | |
3a1ee7e8 | 1562 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1563 | while (l) { |
a951d81d BL |
1564 | SV *arg = NULL; |
1565 | if (l->tab->Getarg) | |
1566 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); | |
1567 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1568 | (arg) ? arg : &PL_sv_undef); | |
1569 | if (arg) | |
1570 | SvREFCNT_dec(arg); | |
14a5cf38 JH |
1571 | l = *PerlIONext(&l); |
1572 | } | |
1573 | } | |
1574 | else { | |
1575 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1576 | if (!layera) { |
1577 | return NULL; | |
1578 | } | |
14a5cf38 JH |
1579 | } |
1580 | /* | |
71200d45 | 1581 | * Start at "top" of layer stack |
14a5cf38 JH |
1582 | */ |
1583 | n = layera->cur - 1; | |
1584 | while (n >= 0) { | |
46c461b5 | 1585 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1586 | if (t && t->Open) { |
1587 | tab = t; | |
1588 | break; | |
1589 | } | |
1590 | n--; | |
1591 | } | |
1592 | if (tab) { | |
1593 | /* | |
71200d45 | 1594 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1595 | */ |
7cf31beb | 1596 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1597 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1598 | } |
14a5cf38 | 1599 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1600 | tab->name, layers ? layers : "(Null)", mode, fd, |
1601 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1602 | if (tab->Open) |
1603 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1604 | f, narg, args); | |
1605 | else { | |
1606 | SETERRNO(EINVAL, LIB_INVARG); | |
1607 | f = NULL; | |
1608 | } | |
14a5cf38 JH |
1609 | if (f) { |
1610 | if (n + 1 < layera->cur) { | |
1611 | /* | |
1612 | * More layers above the one that we used to open - | |
71200d45 | 1613 | * apply them now |
14a5cf38 | 1614 | */ |
d9dac8cd NIS |
1615 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1616 | /* If pushing layers fails close the file */ | |
1617 | PerlIO_close(f); | |
14a5cf38 JH |
1618 | f = NULL; |
1619 | } | |
1620 | } | |
1621 | } | |
1622 | } | |
3a1ee7e8 | 1623 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1624 | } |
1625 | return f; | |
ee518936 | 1626 | } |
b931b1d9 NIS |
1627 | |
1628 | ||
9e353e3b | 1629 | SSize_t |
e87a358a | 1630 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1631 | { |
7918f24d NC |
1632 | PERL_ARGS_ASSERT_PERLIO_READ; |
1633 | ||
b32dd47e | 1634 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1635 | } |
1636 | ||
313ca112 | 1637 | SSize_t |
e87a358a | 1638 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1639 | { |
7918f24d NC |
1640 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1641 | ||
b32dd47e | 1642 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1643 | } |
1644 | ||
9e353e3b | 1645 | SSize_t |
e87a358a | 1646 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1647 | { |
7918f24d NC |
1648 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1649 | ||
b32dd47e | 1650 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1651 | } |
1652 | ||
6f9d8c32 | 1653 | int |
e87a358a | 1654 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1655 | { |
b32dd47e | 1656 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1657 | } |
1658 | ||
9e353e3b | 1659 | Off_t |
e87a358a | 1660 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1661 | { |
b32dd47e | 1662 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1663 | } |
1664 | ||
6f9d8c32 | 1665 | int |
e87a358a | 1666 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1667 | { |
97aff369 | 1668 | dVAR; |
14a5cf38 JH |
1669 | if (f) { |
1670 | if (*f) { | |
de009b76 | 1671 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1672 | |
1673 | if (tab && tab->Flush) | |
f62ce20a | 1674 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1675 | else |
1676 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1677 | } |
1678 | else { | |
fe5a182c | 1679 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1680 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1681 | return -1; |
1682 | } | |
1683 | } | |
1684 | else { | |
1685 | /* | |
1686 | * Is it good API design to do flush-all on NULL, a potentially | |
1687 | * errorneous input? Maybe some magical value (PerlIO* | |
1688 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1689 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1690 | * decisions? --jhi |
14a5cf38 | 1691 | */ |
a1ea730d | 1692 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1693 | int code = 0; |
1694 | while ((f = *table)) { | |
1695 | int i; | |
1696 | table = (PerlIO **) (f++); | |
1697 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1698 | if (*f && PerlIO_flush(f) != 0) | |
1699 | code = -1; | |
1700 | f++; | |
1701 | } | |
1702 | } | |
1703 | return code; | |
1704 | } | |
760ac839 LW |
1705 | } |
1706 | ||
a9c883f6 | 1707 | void |
f62ce20a | 1708 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1709 | { |
97aff369 | 1710 | dVAR; |
a1ea730d | 1711 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1712 | PerlIO *f; |
1713 | while ((f = *table)) { | |
1714 | int i; | |
1715 | table = (PerlIO **) (f++); | |
1716 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1717 | if (*f | |
1718 | && (PerlIOBase(f)-> | |
1719 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1720 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1721 | PerlIO_flush(f); | |
1722 | f++; | |
1723 | } | |
a9c883f6 | 1724 | } |
a9c883f6 NIS |
1725 | } |
1726 | ||
06da4f11 | 1727 | int |
e87a358a | 1728 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1729 | { |
b32dd47e | 1730 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1731 | } |
1732 | ||
f3862f8b NIS |
1733 | int |
1734 | PerlIO_isutf8(PerlIO *f) | |
1735 | { | |
1b7a0411 JH |
1736 | if (PerlIOValid(f)) |
1737 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1738 | else | |
1739 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1740 | |
1b7a0411 | 1741 | return -1; |
f3862f8b NIS |
1742 | } |
1743 | ||
6f9d8c32 | 1744 | int |
e87a358a | 1745 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1746 | { |
b32dd47e | 1747 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1748 | } |
1749 | ||
9e353e3b | 1750 | int |
e87a358a | 1751 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1752 | { |
b32dd47e | 1753 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1754 | } |
1755 | ||
9e353e3b | 1756 | void |
e87a358a | 1757 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1758 | { |
b32dd47e | 1759 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1760 | } |
1761 | ||
9e353e3b | 1762 | void |
e87a358a | 1763 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1764 | { |
b32dd47e | 1765 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1766 | } |
1767 | ||
9e353e3b NIS |
1768 | int |
1769 | PerlIO_has_base(PerlIO *f) | |
1770 | { | |
1b7a0411 | 1771 | if (PerlIOValid(f)) { |
46c461b5 | 1772 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1773 | |
1774 | if (tab) | |
1775 | return (tab->Get_base != NULL); | |
1776 | SETERRNO(EINVAL, LIB_INVARG); | |
1777 | } | |
1778 | else | |
1779 | SETERRNO(EBADF, SS_IVCHAN); | |
1780 | ||
1781 | return 0; | |
760ac839 LW |
1782 | } |
1783 | ||
9e353e3b NIS |
1784 | int |
1785 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1786 | { |
04892f78 | 1787 | if (PerlIOValid(f) && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) { |
46c461b5 | 1788 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1789 | |
1790 | if (tab) | |
1791 | return (tab->Set_ptrcnt != NULL); | |
1792 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1793 | } |
1b7a0411 JH |
1794 | else |
1795 | SETERRNO(EBADF, SS_IVCHAN); | |
1796 | ||
14a5cf38 | 1797 | return 0; |
9e353e3b NIS |
1798 | } |
1799 | ||
9e353e3b NIS |
1800 | int |
1801 | PerlIO_has_cntptr(PerlIO *f) | |
1802 | { | |
04892f78 | 1803 | if (PerlIOValid(f)) { |
46c461b5 | 1804 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1805 | |
1806 | if (tab) | |
1807 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1808 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1809 | } |
1b7a0411 JH |
1810 | else |
1811 | SETERRNO(EBADF, SS_IVCHAN); | |
1812 | ||
14a5cf38 | 1813 | return 0; |
9e353e3b NIS |
1814 | } |
1815 | ||
9e353e3b NIS |
1816 | int |
1817 | PerlIO_canset_cnt(PerlIO *f) | |
1818 | { | |
04892f78 | 1819 | if (PerlIOValid(f)) { |
46c461b5 | 1820 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1821 | |
1822 | if (tab) | |
1823 | return (tab->Set_ptrcnt != NULL); | |
1824 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1825 | } |
1b7a0411 JH |
1826 | else |
1827 | SETERRNO(EBADF, SS_IVCHAN); | |
1828 | ||
14a5cf38 | 1829 | return 0; |
760ac839 LW |
1830 | } |
1831 | ||
888911fc | 1832 | STDCHAR * |
e87a358a | 1833 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1834 | { |
b32dd47e | 1835 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1836 | } |
1837 | ||
9e353e3b | 1838 | int |
e87a358a | 1839 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1840 | { |
b32dd47e | 1841 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1842 | } |
1843 | ||
9e353e3b | 1844 | STDCHAR * |
e87a358a | 1845 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1846 | { |
b32dd47e | 1847 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1848 | } |
1849 | ||
05d1247b | 1850 | int |
e87a358a | 1851 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1852 | { |
b32dd47e | 1853 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1854 | } |
1855 | ||
9e353e3b | 1856 | void |
e87a358a | 1857 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1858 | { |
b32dd47e | 1859 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1860 | } |
1861 | ||
9e353e3b | 1862 | void |
e87a358a | 1863 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1864 | { |
b32dd47e | 1865 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1866 | } |
1867 | ||
4ec2216f | 1868 | |
9e353e3b | 1869 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1870 | /* |
71200d45 | 1871 | * utf8 and raw dummy layers |
14a5cf38 | 1872 | */ |
dfebf958 | 1873 | |
26fb694e | 1874 | IV |
2dc2558e | 1875 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1876 | { |
96a5add6 | 1877 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1878 | PERL_UNUSED_ARG(mode); |
1879 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1880 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1881 | if (tab->kind & PERLIO_K_UTF8) |
1882 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1883 | else | |
1884 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1885 | return 0; | |
1886 | } | |
1887 | return -1; | |
26fb694e NIS |
1888 | } |
1889 | ||
27da23d5 | 1890 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1891 | sizeof(PerlIO_funcs), |
14a5cf38 | 1892 | "utf8", |
2dc2558e | 1893 | 0, |
6874a2de | 1894 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1895 | PerlIOUtf8_pushed, |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
1901 | NULL, | |
1902 | NULL, | |
1903 | NULL, | |
1904 | NULL, | |
1905 | NULL, | |
de009b76 AL |
1906 | NULL, |
1907 | NULL, | |
22569500 NIS |
1908 | NULL, /* flush */ |
1909 | NULL, /* fill */ | |
14a5cf38 JH |
1910 | NULL, |
1911 | NULL, | |
1912 | NULL, | |
1913 | NULL, | |
22569500 NIS |
1914 | NULL, /* get_base */ |
1915 | NULL, /* get_bufsiz */ | |
1916 | NULL, /* get_ptr */ | |
1917 | NULL, /* get_cnt */ | |
1918 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1919 | }; |
1920 | ||
27da23d5 | 1921 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1922 | sizeof(PerlIO_funcs), |
14a5cf38 | 1923 | "bytes", |
2dc2558e | 1924 | 0, |
14a5cf38 JH |
1925 | PERLIO_K_DUMMY, |
1926 | PerlIOUtf8_pushed, | |
1927 | NULL, | |
1928 | NULL, | |
1929 | NULL, | |
1930 | NULL, | |
1931 | NULL, | |
1932 | NULL, | |
1933 | NULL, | |
1934 | NULL, | |
1935 | NULL, | |
1936 | NULL, | |
de009b76 AL |
1937 | NULL, |
1938 | NULL, | |
22569500 NIS |
1939 | NULL, /* flush */ |
1940 | NULL, /* fill */ | |
14a5cf38 JH |
1941 | NULL, |
1942 | NULL, | |
1943 | NULL, | |
1944 | NULL, | |
22569500 NIS |
1945 | NULL, /* get_base */ |
1946 | NULL, /* get_bufsiz */ | |
1947 | NULL, /* get_ptr */ | |
1948 | NULL, /* get_cnt */ | |
1949 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1950 | }; |
1951 | ||
1952 | PerlIO * | |
14a5cf38 JH |
1953 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1954 | IV n, const char *mode, int fd, int imode, int perm, | |
1955 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1956 | { |
8772537c AL |
1957 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1958 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1959 | if (tab && tab->Open) |
1960 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1961 | old, narg, args); | |
1962 | SETERRNO(EINVAL, LIB_INVARG); | |
1963 | return NULL; | |
dfebf958 NIS |
1964 | } |
1965 | ||
27da23d5 | 1966 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1967 | sizeof(PerlIO_funcs), |
14a5cf38 | 1968 | "raw", |
2dc2558e | 1969 | 0, |
14a5cf38 JH |
1970 | PERLIO_K_DUMMY, |
1971 | PerlIORaw_pushed, | |
1972 | PerlIOBase_popped, | |
1973 | PerlIORaw_open, | |
1974 | NULL, | |
1975 | NULL, | |
1976 | NULL, | |
1977 | NULL, | |
1978 | NULL, | |
1979 | NULL, | |
1980 | NULL, | |
1981 | NULL, | |
de009b76 AL |
1982 | NULL, |
1983 | NULL, | |
22569500 NIS |
1984 | NULL, /* flush */ |
1985 | NULL, /* fill */ | |
14a5cf38 JH |
1986 | NULL, |
1987 | NULL, | |
1988 | NULL, | |
1989 | NULL, | |
22569500 NIS |
1990 | NULL, /* get_base */ |
1991 | NULL, /* get_bufsiz */ | |
1992 | NULL, /* get_ptr */ | |
1993 | NULL, /* get_cnt */ | |
1994 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1995 | }; |
1996 | /*--------------------------------------------------------------------------------------*/ | |
1997 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1998 | /* |
71200d45 | 1999 | * "Methods" of the "base class" |
14a5cf38 | 2000 | */ |
9e353e3b NIS |
2001 | |
2002 | IV | |
f62ce20a | 2003 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2004 | { |
04892f78 | 2005 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
2006 | } |
2007 | ||
f5b9d040 | 2008 | char * |
81428673 | 2009 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
2010 | { |
2011 | char *s = buf; | |
81428673 | 2012 | if (PerlIOValid(f)) { |
de009b76 | 2013 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2014 | if (flags & PERLIO_F_APPEND) { |
2015 | *s++ = 'a'; | |
2016 | if (flags & PERLIO_F_CANREAD) { | |
2017 | *s++ = '+'; | |
2018 | } | |
14a5cf38 | 2019 | } |
81428673 NIS |
2020 | else if (flags & PERLIO_F_CANREAD) { |
2021 | *s++ = 'r'; | |
2022 | if (flags & PERLIO_F_CANWRITE) | |
2023 | *s++ = '+'; | |
2024 | } | |
2025 | else if (flags & PERLIO_F_CANWRITE) { | |
2026 | *s++ = 'w'; | |
2027 | if (flags & PERLIO_F_CANREAD) { | |
2028 | *s++ = '+'; | |
2029 | } | |
14a5cf38 | 2030 | } |
35990314 | 2031 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2032 | if (!(flags & PERLIO_F_CRLF)) |
2033 | *s++ = 'b'; | |
5f1a76d0 | 2034 | #endif |
81428673 | 2035 | } |
14a5cf38 JH |
2036 | *s = '\0'; |
2037 | return buf; | |
f5b9d040 NIS |
2038 | } |
2039 | ||
81428673 | 2040 | |
76ced9ad | 2041 | IV |
2dc2558e | 2042 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2043 | { |
de009b76 | 2044 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2045 | PERL_UNUSED_CONTEXT; |
8772537c | 2046 | PERL_UNUSED_ARG(arg); |
de009b76 | 2047 | |
14a5cf38 JH |
2048 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2049 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2050 | if (tab->Set_ptrcnt != NULL) | |
2051 | l->flags |= PERLIO_F_FASTGETS; | |
2052 | if (mode) { | |
3b6c1aba | 2053 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2054 | mode++; |
2055 | switch (*mode++) { | |
2056 | case 'r': | |
2057 | l->flags |= PERLIO_F_CANREAD; | |
2058 | break; | |
2059 | case 'a': | |
2060 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2061 | break; | |
2062 | case 'w': | |
2063 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2064 | break; | |
2065 | default: | |
93189314 | 2066 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2067 | return -1; |
2068 | } | |
2069 | while (*mode) { | |
2070 | switch (*mode++) { | |
2071 | case '+': | |
2072 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2073 | break; | |
2074 | case 'b': | |
2075 | l->flags &= ~PERLIO_F_CRLF; | |
2076 | break; | |
2077 | case 't': | |
2078 | l->flags |= PERLIO_F_CRLF; | |
2079 | break; | |
2080 | default: | |
93189314 | 2081 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2082 | return -1; |
2083 | } | |
2084 | } | |
2085 | } | |
2086 | else { | |
2087 | if (l->next) { | |
2088 | l->flags |= l->next->flags & | |
2089 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2090 | PERLIO_F_APPEND); | |
2091 | } | |
2092 | } | |
5e2ab84b | 2093 | #if 0 |
14a5cf38 | 2094 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2095 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2096 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2097 | #endif |
14a5cf38 | 2098 | return 0; |
76ced9ad NIS |
2099 | } |
2100 | ||
2101 | IV | |
f62ce20a | 2102 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2103 | { |
96a5add6 | 2104 | PERL_UNUSED_CONTEXT; |
8772537c | 2105 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2106 | return 0; |
760ac839 LW |
2107 | } |
2108 | ||
9e353e3b | 2109 | SSize_t |
f62ce20a | 2110 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2111 | { |
14a5cf38 | 2112 | /* |
71200d45 | 2113 | * Save the position as current head considers it |
14a5cf38 | 2114 | */ |
de009b76 | 2115 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2116 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2117 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2118 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2119 | } |
2120 | ||
f6c77cf1 | 2121 | SSize_t |
f62ce20a | 2122 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2123 | { |
14a5cf38 JH |
2124 | STDCHAR *buf = (STDCHAR *) vbuf; |
2125 | if (f) { | |
263df5f1 JH |
2126 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2127 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2128 | SETERRNO(EBADF, SS_IVCHAN); | |
2129 | return 0; | |
2130 | } | |
14a5cf38 | 2131 | while (count > 0) { |
93c2c2ec IZ |
2132 | get_cnt: |
2133 | { | |
14a5cf38 JH |
2134 | SSize_t avail = PerlIO_get_cnt(f); |
2135 | SSize_t take = 0; | |
2136 | if (avail > 0) | |
bb7a0f54 | 2137 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2138 | if (take > 0) { |
2139 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2140 | Copy(ptr, buf, take, STDCHAR); | |
2141 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2142 | count -= take; | |
2143 | buf += take; | |
93c2c2ec IZ |
2144 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2145 | goto get_cnt; | |
14a5cf38 JH |
2146 | } |
2147 | if (count > 0 && avail <= 0) { | |
2148 | if (PerlIO_fill(f) != 0) | |
2149 | break; | |
2150 | } | |
93c2c2ec | 2151 | } |
14a5cf38 JH |
2152 | } |
2153 | return (buf - (STDCHAR *) vbuf); | |
2154 | } | |
f6c77cf1 | 2155 | return 0; |
f6c77cf1 NIS |
2156 | } |
2157 | ||
9e353e3b | 2158 | IV |
f62ce20a | 2159 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2160 | { |
96a5add6 | 2161 | PERL_UNUSED_CONTEXT; |
8772537c | 2162 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2163 | return 0; |
9e353e3b NIS |
2164 | } |
2165 | ||
2166 | IV | |
f62ce20a | 2167 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2168 | { |
96a5add6 | 2169 | PERL_UNUSED_CONTEXT; |
8772537c | 2170 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2171 | return -1; |
06da4f11 NIS |
2172 | } |
2173 | ||
2174 | IV | |
f62ce20a | 2175 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2176 | { |
37725cdc NIS |
2177 | IV code = -1; |
2178 | if (PerlIOValid(f)) { | |
2179 | PerlIO *n = PerlIONext(f); | |
2180 | code = PerlIO_flush(f); | |
2181 | PerlIOBase(f)->flags &= | |
2182 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2183 | while (PerlIOValid(n)) { | |
de009b76 | 2184 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2185 | if (tab && tab->Close) { |
2186 | if ((*tab->Close)(aTHX_ n) != 0) | |
2187 | code = -1; | |
2188 | break; | |
2189 | } | |
2190 | else { | |
2191 | PerlIOBase(n)->flags &= | |
2192 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2193 | } | |
2194 | n = PerlIONext(n); | |
2195 | } | |
2196 | } | |
2197 | else { | |
2198 | SETERRNO(EBADF, SS_IVCHAN); | |
2199 | } | |
14a5cf38 | 2200 | return code; |
9e353e3b NIS |
2201 | } |
2202 | ||
2203 | IV | |
f62ce20a | 2204 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2205 | { |
96a5add6 | 2206 | PERL_UNUSED_CONTEXT; |
04892f78 | 2207 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2208 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2209 | } | |
2210 | return 1; | |
9e353e3b NIS |
2211 | } |
2212 | ||
2213 | IV | |
f62ce20a | 2214 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2215 | { |
96a5add6 | 2216 | PERL_UNUSED_CONTEXT; |
04892f78 | 2217 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2218 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2219 | } | |
2220 | return 1; | |
9e353e3b NIS |
2221 | } |
2222 | ||
2223 | void | |
f62ce20a | 2224 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2225 | { |
04892f78 | 2226 | if (PerlIOValid(f)) { |
dcda55fc | 2227 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2228 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2229 | if (PerlIOValid(n)) |
14a5cf38 JH |
2230 | PerlIO_clearerr(n); |
2231 | } | |
9e353e3b NIS |
2232 | } |
2233 | ||
2234 | void | |
f62ce20a | 2235 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2236 | { |
96a5add6 | 2237 | PERL_UNUSED_CONTEXT; |
04892f78 | 2238 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2239 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2240 | } | |
9e353e3b NIS |
2241 | } |
2242 | ||
93a8090d NIS |
2243 | SV * |
2244 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2245 | { | |
2246 | if (!arg) | |
a0714e2c | 2247 | return NULL; |
93a8090d NIS |
2248 | #ifdef sv_dup |
2249 | if (param) { | |
a951d81d BL |
2250 | arg = sv_dup(arg, param); |
2251 | SvREFCNT_inc_simple_void_NN(arg); | |
2252 | return arg; | |
93a8090d NIS |
2253 | } |
2254 | else { | |
2255 | return newSVsv(arg); | |
2256 | } | |
2257 | #else | |
1b6737cc | 2258 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2259 | return newSVsv(arg); |
2260 | #endif | |
2261 | } | |
2262 | ||
2263 | PerlIO * | |
ecdeb87c | 2264 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2265 | { |
1b6737cc | 2266 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2267 | if (PerlIOValid(nexto)) { |
de009b76 | 2268 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2269 | if (tab && tab->Dup) |
2270 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2271 | else | |
2272 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2273 | } |
2274 | if (f) { | |
dcda55fc | 2275 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2276 | SV *arg = NULL; |
93a8090d | 2277 | char buf[8]; |
fe5a182c JH |
2278 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2279 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2280 | if (self->Getarg) |
2281 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2282 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2283 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2284 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
a951d81d | 2285 | if (arg) |
93a8090d | 2286 | SvREFCNT_dec(arg); |
93a8090d NIS |
2287 | } |
2288 | return f; | |
2289 | } | |
2290 | ||
27da23d5 | 2291 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2292 | |
8b84d7dd | 2293 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2294 | static void |
2295 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2296 | dVAR; |
22c96fc1 | 2297 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2298 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2299 | int *new_array; |
2300 | ||
2301 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2302 | old_max, new_fd, new_max); | |
2303 | ||
2304 | if (new_fd < old_max) { | |
2305 | return; | |
2306 | } | |
2307 | ||
f4ae5be6 NC |
2308 | assert (new_max > new_fd); |
2309 | ||
eae082a0 JH |
2310 | /* Use plain realloc() since we need this memory to be really |
2311 | * global and visible to all the interpreters and/or threads. */ | |
2312 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2313 | |
2314 | if (!new_array) { | |
8b84d7dd | 2315 | #ifdef USE_ITHREADS |
6cb8cb21 | 2316 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2317 | #endif |
2318 | /* Can't use PerlIO to write as it allocates memory */ | |
2319 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2320 | PL_no_mem, strlen(PL_no_mem)); | |
2321 | my_exit(1); | |
2322 | } | |
2323 | ||
2324 | PL_perlio_fd_refcnt_size = new_max; | |
2325 | PL_perlio_fd_refcnt = new_array; | |
2326 | ||
95b63a38 JH |
2327 | PerlIO_debug("Zeroing %p, %d\n", |
2328 | (void*)(new_array + old_max), | |
2329 | new_max - old_max); | |
22c96fc1 NC |
2330 | |
2331 | Zero(new_array + old_max, new_max - old_max, int); | |
2332 | } | |
2333 | ||
2334 | ||
93a8090d NIS |
2335 | void |
2336 | PerlIO_init(pTHX) | |
2337 | { | |
8b84d7dd | 2338 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2339 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2340 | } |
2341 | ||
168d5872 NIS |
2342 | void |
2343 | PerlIOUnix_refcnt_inc(int fd) | |
2344 | { | |
27da23d5 | 2345 | dTHX; |
22c96fc1 | 2346 | if (fd >= 0) { |
97aff369 | 2347 | dVAR; |
22c96fc1 | 2348 | |
8b84d7dd | 2349 | #ifdef USE_ITHREADS |
6cb8cb21 | 2350 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2351 | #endif |
22c96fc1 NC |
2352 | if (fd >= PL_perlio_fd_refcnt_size) |
2353 | S_more_refcounted_fds(aTHX_ fd); | |
2354 | ||
27da23d5 | 2355 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd RGS |
2356 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
2357 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2358 | fd, PL_perlio_fd_refcnt[fd]); | |
2359 | } | |
2360 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2361 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2362 | |
8b84d7dd | 2363 | #ifdef USE_ITHREADS |
6cb8cb21 | 2364 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2365 | #endif |
8b84d7dd RGS |
2366 | } else { |
2367 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2368 | } |
2369 | } | |
2370 | ||
168d5872 NIS |
2371 | int |
2372 | PerlIOUnix_refcnt_dec(int fd) | |
2373 | { | |
27da23d5 | 2374 | dTHX; |
168d5872 | 2375 | int cnt = 0; |
22c96fc1 | 2376 | if (fd >= 0) { |
97aff369 | 2377 | dVAR; |
8b84d7dd | 2378 | #ifdef USE_ITHREADS |
6cb8cb21 | 2379 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2380 | #endif |
8b84d7dd RGS |
2381 | if (fd >= PL_perlio_fd_refcnt_size) { |
2382 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", | |
2383 | fd, PL_perlio_fd_refcnt_size); | |
2384 | } | |
2385 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2386 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", | |
2387 | fd, PL_perlio_fd_refcnt[fd]); | |
2388 | } | |
27da23d5 | 2389 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2390 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2391 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2392 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2393 | #endif |
8b84d7dd RGS |
2394 | } else { |
2395 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2396 | } |
2397 | return cnt; | |
2398 | } | |
2399 | ||
694c95cf JH |
2400 | void |
2401 | PerlIO_cleanup(pTHX) | |
2402 | { | |
97aff369 | 2403 | dVAR; |
694c95cf JH |
2404 | int i; |
2405 | #ifdef USE_ITHREADS | |
a25429c6 | 2406 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2407 | #else |
2408 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2409 | #endif |
e47547a8 | 2410 | |
694c95cf JH |
2411 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2412 | for (i=0; i < 3; i++) | |
2413 | PerlIOUnix_refcnt_inc(i); | |
2414 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2415 | /* Restore STDIN..STDERR refcount */ | |
2416 | for (i=0; i < 3; i++) | |
2417 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2418 | |
2419 | if (PL_known_layers) { | |
2420 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2421 | PL_known_layers = NULL; | |
2422 | } | |
27da23d5 | 2423 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2424 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2425 | PL_def_layerlist = NULL; | |
2426 | } | |
6cb8cb21 RGS |
2427 | } |
2428 | ||
0934c9d9 | 2429 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2430 | { |
53d44271 | 2431 | dVAR; |
4f3da17a DM |
2432 | #if 0 |
2433 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2434 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2435 | being present (at least in win32) :-(. | |
2436 | Disable for now. | |
2437 | */ | |
6cb8cb21 RGS |
2438 | #ifdef DEBUGGING |
2439 | { | |
2440 | /* By now all filehandles should have been closed, so any | |
2441 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2442 | * errors. */ | |
77db880c JH |
2443 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2444 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2445 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2446 | int i; |
2447 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2448 | if (PL_perlio_fd_refcnt[i]) { |
2449 | const STRLEN len = | |
2450 | my_snprintf(buf, sizeof(buf), | |
2451 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2452 | i, PL_perlio_fd_refcnt[i]); | |
2453 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2454 | } | |
6cb8cb21 RGS |
2455 | } |
2456 | } | |
2457 | #endif | |
4f3da17a | 2458 | #endif |
eae082a0 JH |
2459 | /* Not bothering with PL_perlio_mutex since by now |
2460 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2461 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2462 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2463 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2464 | PL_perlio_fd_refcnt = NULL; |
2465 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2466 | } |
694c95cf JH |
2467 | } |
2468 | ||
9e353e3b | 2469 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2470 | /* |
71200d45 | 2471 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2472 | */ |
9e353e3b | 2473 | |
14a5cf38 | 2474 | typedef struct { |
22569500 NIS |
2475 | struct _PerlIO base; /* The generic part */ |
2476 | int fd; /* UNIX like file descriptor */ | |
2477 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2478 | } PerlIOUnix; |
2479 | ||
6f9d8c32 | 2480 | int |
9e353e3b | 2481 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2482 | { |
14a5cf38 | 2483 | int oflags = -1; |
3b6c1aba | 2484 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2485 | mode++; |
2486 | switch (*mode) { | |
2487 | case 'r': | |
2488 | oflags = O_RDONLY; | |
2489 | if (*++mode == '+') { | |
2490 | oflags = O_RDWR; | |
2491 | mode++; | |
2492 | } | |
2493 | break; | |
2494 | ||
2495 | case 'w': | |
2496 | oflags = O_CREAT | O_TRUNC; | |
2497 | if (*++mode == '+') { | |
2498 | oflags |= O_RDWR; | |
2499 | mode++; | |
2500 | } | |
2501 | else | |
2502 | oflags |= O_WRONLY; | |
2503 | break; | |
2504 | ||
2505 | case 'a': | |
2506 | oflags = O_CREAT | O_APPEND; | |
2507 | if (*++mode == '+') { | |
2508 | oflags |= O_RDWR; | |
2509 | mode++; | |
2510 | } | |
2511 | else | |
2512 | oflags |= O_WRONLY; | |
2513 | break; | |
2514 | } | |
2515 | if (*mode == 'b') { | |
2516 | oflags |= O_BINARY; | |
2517 | oflags &= ~O_TEXT; | |
2518 | mode++; | |
2519 | } | |
2520 | else if (*mode == 't') { | |
2521 | oflags |= O_TEXT; | |
2522 | oflags &= ~O_BINARY; | |
2523 | mode++; | |
2524 | } | |
2525 | /* | |
71200d45 | 2526 | * Always open in binary mode |
14a5cf38 JH |
2527 | */ |
2528 | oflags |= O_BINARY; | |
2529 | if (*mode || oflags == -1) { | |
93189314 | 2530 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2531 | oflags = -1; |
2532 | } | |
2533 | return oflags; | |
9e353e3b NIS |
2534 | } |
2535 | ||
2536 | IV | |
f62ce20a | 2537 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2538 | { |
96a5add6 | 2539 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2540 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2541 | } |
2542 | ||
aa063c35 NIS |
2543 | static void |
2544 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2545 | { |
de009b76 | 2546 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2547 | #if defined(WIN32) |
aa063c35 NIS |
2548 | Stat_t st; |
2549 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2550 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2551 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2552 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2553 | } | |
aa063c35 NIS |
2554 | else { |
2555 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2556 | } | |
6caa5a9c NIS |
2557 | } |
2558 | #endif | |
aa063c35 NIS |
2559 | s->fd = fd; |
2560 | s->oflags = imode; | |
2561 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2562 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2563 | } |
2564 | ||
2565 | IV | |
2566 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2567 | { | |
2568 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2569 | if (*PerlIONext(f)) { |
4b069b44 | 2570 | /* We never call down so do any pending stuff now */ |
03c0554d | 2571 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2572 | /* |
71200d45 | 2573 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2574 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2575 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2576 | */ |
acbd16bf | 2577 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2578 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2579 | } |
2580 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2581 | |
14a5cf38 | 2582 | return code; |
4b803d04 NIS |
2583 | } |
2584 | ||
c2fcde81 JH |
2585 | IV |
2586 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2587 | { | |
de009b76 | 2588 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2589 | Off_t new_loc; |
96a5add6 | 2590 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2591 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2592 | #ifdef ESPIPE | |
2593 | SETERRNO(ESPIPE, LIB_INVARG); | |
2594 | #else | |
2595 | SETERRNO(EINVAL, LIB_INVARG); | |
2596 | #endif | |
2597 | return -1; | |
2598 | } | |
0723351e NC |
2599 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2600 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2601 | return -1; |
c2fcde81 JH |
2602 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2603 | return 0; | |
2604 | } | |
2605 | ||
9e353e3b | 2606 | PerlIO * |
14a5cf38 JH |
2607 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2608 | IV n, const char *mode, int fd, int imode, | |
2609 | int perm, PerlIO *f, int narg, SV **args) | |
2610 | { | |
d9dac8cd | 2611 | if (PerlIOValid(f)) { |
14a5cf38 | 2612 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2613 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2614 | } |
2615 | if (narg > 0) { | |
3b6c1aba | 2616 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2617 | mode++; |
2618 | else { | |
2619 | imode = PerlIOUnix_oflags(mode); | |
2620 | perm = 0666; | |
2621 | } | |
2622 | if (imode != -1) { | |
e62f0680 | 2623 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2624 | fd = PerlLIO_open3(path, imode, perm); |
2625 | } | |
2626 | } | |
2627 | if (fd >= 0) { | |
3b6c1aba | 2628 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2629 | mode++; |
2630 | if (!f) { | |
2631 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2632 | } |
2633 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2634 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2635 | return NULL; | |
2636 | } | |
d9dac8cd | 2637 | } |
aa063c35 | 2638 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2639 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2640 | if (*mode == IoTYPE_APPEND) |
2641 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2642 | return f; |
2643 | } | |
2644 | else { | |
2645 | if (f) { | |
6f207bd3 | 2646 | NOOP; |
14a5cf38 | 2647 | /* |
71200d45 | 2648 | * FIXME: pop layers ??? |
14a5cf38 JH |
2649 | */ |
2650 | } | |
2651 | return NULL; | |
2652 | } | |
9e353e3b NIS |
2653 | } |
2654 | ||
71200d45 | 2655 | PerlIO * |
ecdeb87c | 2656 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2657 | { |
dcda55fc | 2658 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2659 | int fd = os->fd; |
ecdeb87c NIS |
2660 | if (flags & PERLIO_DUP_FD) { |
2661 | fd = PerlLIO_dup(fd); | |
2662 | } | |
22c96fc1 | 2663 | if (fd >= 0) { |
ecdeb87c | 2664 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2665 | if (f) { |
2666 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2667 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2668 | return f; |
2669 | } | |
71200d45 NIS |
2670 | } |
2671 | return NULL; | |
2672 | } | |
2673 | ||
2674 | ||
9e353e3b | 2675 | SSize_t |
f62ce20a | 2676 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2677 | { |
97aff369 | 2678 | dVAR; |
de009b76 | 2679 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2680 | #ifdef PERLIO_STD_SPECIAL |
2681 | if (fd == 0) | |
2682 | return PERLIO_STD_IN(fd, vbuf, count); | |
2683 | #endif | |
81428673 | 2684 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2685 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2686 | return 0; |
1fd8f4ce | 2687 | } |
14a5cf38 | 2688 | while (1) { |
b464bac0 | 2689 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2690 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2691 | if (len < 0) { |
2692 | if (errno != EAGAIN) { | |
2693 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2694 | } | |
2695 | } | |
2696 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2697 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2698 | SETERRNO(0,0); |
2699 | } | |
14a5cf38 JH |
2700 | return len; |
2701 | } | |
2702 | PERL_ASYNC_CHECK(); | |
2703 | } | |
b464bac0 | 2704 | /*NOTREACHED*/ |
9e353e3b NIS |
2705 | } |
2706 | ||
2707 | SSize_t | |
f62ce20a | 2708 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2709 | { |
97aff369 | 2710 | dVAR; |
de009b76 | 2711 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2712 | #ifdef PERLIO_STD_SPECIAL |
2713 | if (fd == 1 || fd == 2) | |
2714 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2715 | #endif | |
14a5cf38 | 2716 | while (1) { |
de009b76 | 2717 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2718 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2719 | if (len < 0) { |
2720 | if (errno != EAGAIN) { | |
2721 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2722 | } | |
2723 | } | |
14a5cf38 JH |
2724 | return len; |
2725 | } | |
2726 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2727 | } |
1b6737cc | 2728 | /*NOTREACHED*/ |
9e353e3b NIS |
2729 | } |
2730 | ||
9e353e3b | 2731 | Off_t |
f62ce20a | 2732 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2733 | { |
96a5add6 AL |
2734 | PERL_UNUSED_CONTEXT; |
2735 | ||
14a5cf38 | 2736 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2737 | } |
2738 | ||
2556f95e GF |
2739 | |
2740 | IV | |
2376d97d | 2741 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2742 | { |
97aff369 | 2743 | dVAR; |
de009b76 | 2744 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2745 | int code = 0; |
168d5872 NIS |
2746 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2747 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2748 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2749 | return 0; | |
22569500 | 2750 | } |
93a8090d NIS |
2751 | } |
2752 | else { | |
93189314 | 2753 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2754 | return -1; |
2755 | } | |
14a5cf38 JH |
2756 | while (PerlLIO_close(fd) != 0) { |
2757 | if (errno != EINTR) { | |
2758 | code = -1; | |
2759 | break; | |
2760 | } | |
2761 | PERL_ASYNC_CHECK(); | |
2762 | } | |
2763 | if (code == 0) { | |
2764 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2765 | } | |
2766 | return code; | |
9e353e3b NIS |
2767 | } |
2768 | ||
27da23d5 | 2769 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2770 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2771 | "unix", |
2772 | sizeof(PerlIOUnix), | |
2773 | PERLIO_K_RAW, | |
2774 | PerlIOUnix_pushed, | |
2376d97d | 2775 | PerlIOBase_popped, |
14a5cf38 | 2776 | PerlIOUnix_open, |
86e05cf2 | 2777 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2778 | NULL, |
2779 | PerlIOUnix_fileno, | |
71200d45 | 2780 | PerlIOUnix_dup, |
14a5cf38 JH |
2781 | PerlIOUnix_read, |
2782 | PerlIOBase_unread, | |
2783 | PerlIOUnix_write, | |
2784 | PerlIOUnix_seek, | |
2785 | PerlIOUnix_tell, | |
2786 | PerlIOUnix_close, | |
22569500 NIS |
2787 | PerlIOBase_noop_ok, /* flush */ |
2788 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2789 | PerlIOBase_eof, |
2790 | PerlIOBase_error, | |
2791 | PerlIOBase_clearerr, | |
2792 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2793 | NULL, /* get_base */ |
2794 | NULL, /* get_bufsiz */ | |
2795 | NULL, /* get_ptr */ | |
2796 | NULL, /* get_cnt */ | |
2797 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2798 | }; |
2799 | ||
2800 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2801 | /* |
71200d45 | 2802 | * stdio as a layer |
14a5cf38 | 2803 | */ |
9e353e3b | 2804 | |
313e59c8 NIS |
2805 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2806 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2807 | broken by the last second glibc 2.3 fix | |
2808 | */ | |
2809 | #define STDIO_BUFFER_WRITABLE | |
2810 | #endif | |
2811 | ||
2812 | ||
14a5cf38 JH |
2813 | typedef struct { |
2814 | struct _PerlIO base; | |
22569500 | 2815 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2816 | } PerlIOStdio; |
2817 | ||
2818 | IV | |
f62ce20a | 2819 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2820 | { |
96a5add6 AL |
2821 | PERL_UNUSED_CONTEXT; |
2822 | ||
c4420975 AL |
2823 | if (PerlIOValid(f)) { |
2824 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2825 | if (s) | |
2826 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2827 | } |
2828 | errno = EBADF; | |
2829 | return -1; | |
9e353e3b NIS |
2830 | } |
2831 | ||
766a733e | 2832 | char * |
14a5cf38 JH |
2833 | PerlIOStdio_mode(const char *mode, char *tmode) |
2834 | { | |
de009b76 | 2835 | char * const ret = tmode; |
a0625d38 SR |
2836 | if (mode) { |
2837 | while (*mode) { | |
2838 | *tmode++ = *mode++; | |
2839 | } | |
14a5cf38 | 2840 | } |
95005ad8 | 2841 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2842 | *tmode++ = 'b'; |
2843 | #endif | |
14a5cf38 JH |
2844 | *tmode = '\0'; |
2845 | return ret; | |
2846 | } | |
2847 | ||
4b803d04 | 2848 | IV |
2dc2558e | 2849 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2850 | { |
1fd8f4ce NIS |
2851 | PerlIO *n; |
2852 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2853 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2854 | if (toptab == tab) { |
2855 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2856 | PerlIO_pop(aTHX_ f); | |
2857 | return 0; | |
2858 | } else { | |
de009b76 | 2859 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2860 | char tmode[8]; |
2861 | FILE *stdio; | |
81428673 | 2862 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2863 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2864 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2865 | /* We never call down so do any pending stuff now */ | |
2866 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2867 | } |
1fd8f4ce NIS |
2868 | else { |
2869 | return -1; | |
2870 | } | |
2871 | } | |
14a5cf38 | 2872 | } |
2dc2558e | 2873 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2874 | } |
2875 | ||
22569500 | 2876 | |
9e353e3b | 2877 | PerlIO * |
4b069b44 | 2878 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2879 | { |
14a5cf38 JH |
2880 | dTHX; |
2881 | PerlIO *f = NULL; | |
2882 | if (stdio) { | |
22569500 | 2883 | PerlIOStdio *s; |
4b069b44 NIS |
2884 | if (!mode || !*mode) { |
2885 | /* We need to probe to see how we can open the stream | |
2886 | so start with read/write and then try write and read | |
2887 | we dup() so that we can fclose without loosing the fd. | |
2888 | ||
2889 | Note that the errno value set by a failing fdopen | |
2890 | varies between stdio implementations. | |
2891 | */ | |
de009b76 | 2892 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2893 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2894 | if (!f2) { |
a33cf58c | 2895 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2896 | } |
2897 | if (!f2) { | |
a33cf58c | 2898 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2899 | } |
2900 | if (!f2) { | |
2901 | /* Don't seem to be able to open */ | |
2902 | PerlLIO_close(fd); | |
2903 | return f; | |
2904 | } | |
2905 | fclose(f2); | |
22569500 | 2906 | } |
a0714e2c | 2907 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2908 | s = PerlIOSelf(f, PerlIOStdio); |
2909 | s->stdio = stdio; | |
c586124f | 2910 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2911 | } |
14a5cf38 JH |
2912 | } |
2913 | return f; | |
9e353e3b NIS |
2914 | } |
2915 | ||
2916 | PerlIO * | |
14a5cf38 JH |
2917 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2918 | IV n, const char *mode, int fd, int imode, | |
2919 | int perm, PerlIO *f, int narg, SV **args) | |
2920 | { | |
2921 | char tmode[8]; | |
d9dac8cd | 2922 | if (PerlIOValid(f)) { |
dcda55fc AL |
2923 | const char * const path = SvPV_nolen_const(*args); |
2924 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2925 | FILE *stdio; |
2926 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2927 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2928 | s->stdio); |
2929 | if (!s->stdio) | |
2930 | return NULL; | |
2931 | s->stdio = stdio; | |
1751d015 | 2932 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2933 | return f; |
2934 | } | |
2935 | else { | |
2936 | if (narg > 0) { | |
dcda55fc | 2937 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2938 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2939 | mode++; |
2940 | fd = PerlLIO_open3(path, imode, perm); | |
2941 | } | |
2942 | else { | |
95005ad8 GH |
2943 | FILE *stdio; |
2944 | bool appended = FALSE; | |
2945 | #ifdef __CYGWIN__ | |
2946 | /* Cygwin wants its 'b' early. */ | |
2947 | appended = TRUE; | |
2948 | mode = PerlIOStdio_mode(mode, tmode); | |
2949 | #endif | |
2950 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2951 | if (stdio) { |
6f0313ac JH |
2952 | if (!f) { |
2953 | f = PerlIO_allocate(aTHX); | |
2954 | } | |
95005ad8 GH |
2955 | if (!appended) |
2956 | mode = PerlIOStdio_mode(mode, tmode); | |
2957 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2958 | if (f) { | |
0f0f9e2b JH |
2959 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2960 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
2961 | } else { | |
2962 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
2963 | } |
2964 | return f; | |
2965 | } | |
2966 | else { | |
2967 | return NULL; | |
2968 | } | |
14a5cf38 JH |
2969 | } |
2970 | } | |
2971 | if (fd >= 0) { | |
2972 | FILE *stdio = NULL; | |
2973 | int init = 0; | |
3b6c1aba | 2974 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2975 | init = 1; |
2976 | mode++; | |
2977 | } | |
2978 | if (init) { | |
2979 | switch (fd) { | |
2980 | case 0: | |
2981 | stdio = PerlSIO_stdin; | |
2982 | break; | |
2983 | case 1: | |
2984 | stdio = PerlSIO_stdout; | |
2985 | break; | |
2986 | case 2: | |
2987 | stdio = PerlSIO_stderr; | |
2988 | break; | |
2989 | } | |
2990 | } | |
2991 | else { | |
2992 | stdio = PerlSIO_fdopen(fd, mode = | |
2993 | PerlIOStdio_mode(mode, tmode)); | |
2994 | } | |
2995 | if (stdio) { | |
d9dac8cd NIS |
2996 | if (!f) { |
2997 | f = PerlIO_allocate(aTHX); | |
2998 | } | |
a33cf58c | 2999 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3000 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3001 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3002 | } |
14a5cf38 JH |
3003 | return f; |
3004 | } | |
3005 | } | |
3006 | } | |
ee518936 | 3007 | return NULL; |
9e353e3b NIS |
3008 | } |
3009 | ||
1751d015 | 3010 | PerlIO * |
ecdeb87c | 3011 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3012 | { |
3013 | /* This assumes no layers underneath - which is what | |
3014 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3015 | */ | |
ecdeb87c | 3016 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3017 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3018 | const int fd = fileno(stdio); |
9217ff3f | 3019 | char mode[8]; |
ecdeb87c | 3020 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3021 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3022 | if (dfd >= 0) { |
3023 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3024 | goto set_this; | |
ecdeb87c NIS |
3025 | } |
3026 | else { | |
6f207bd3 | 3027 | NOOP; |
ecdeb87c NIS |
3028 | /* FIXME: To avoid messy error recovery if dup fails |
3029 | re-use the existing stdio as though flag was not set | |
3030 | */ | |
3031 | } | |
3032 | } | |
9217ff3f NIS |
3033 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3034 | set_this: | |
694c95cf JH |
3035 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3036 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
1751d015 NIS |
3037 | } |
3038 | return f; | |
3039 | } | |
3040 | ||
0d7a5398 NIS |
3041 | static int |
3042 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3043 | { | |
96a5add6 AL |
3044 | PERL_UNUSED_CONTEXT; |
3045 | ||
0d7a5398 | 3046 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3047 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3048 | */ |
ef8eacb8 AT |
3049 | # if defined(__UCLIBC__) |
3050 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3051 | f->__filedes = -1; | |
3052 | return 1; | |
3053 | # elif defined(__GLIBC__) | |
0d7a5398 | 3054 | /* There may be a better way for GLIBC: |
37725cdc | 3055 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3056 | */ |
3057 | f->_fileno = -1; | |
3058 | return 1; | |
3059 | # elif defined(__sun__) | |
f5992bc4 | 3060 | PERL_UNUSED_ARG(f); |
cfedb851 | 3061 | return 0; |
0d7a5398 NIS |
3062 | # elif defined(__hpux) |
3063 | f->__fileH = 0xff; | |
3064 | f->__fileL = 0xff; | |
3065 | return 1; | |
9837d373 | 3066 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3067 | your platform does not have special entry try this one. |
9837d373 NIS |
3068 | [For OSF only have confirmation for Tru64 (alpha) |
3069 | but assume other OSFs will be similar.] | |
37725cdc | 3070 | */ |
9837d373 | 3071 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3072 | f->_file = -1; |
3073 | return 1; | |
3074 | # elif defined(__FreeBSD__) | |
3075 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3076 | - we could insert a dummy func in the _close function entry |
3077 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3078 | */ |
3079 | f->_file = -1; | |
0c49ea6a SU |
3080 | return 1; |
3081 | # elif defined(__OpenBSD__) | |
3082 | /* There may be a better way on OpenBSD: | |
3083 | - we could insert a dummy func in the _close function entry | |
3084 | f->_close = (int (*)(void *)) dummy_close; | |
3085 | */ | |
3086 | f->_file = -1; | |
0d7a5398 | 3087 | return 1; |
59ad941d IZ |
3088 | # elif defined(__EMX__) |
3089 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3090 | f->_handle = -1; | |
3091 | return 1; | |
0d7a5398 NIS |
3092 | # elif defined(__CYGWIN__) |
3093 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3094 | - we could insert a dummy func in the _close function entry |
3095 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3096 | */ |
3097 | f->_file = -1; | |
3098 | return 1; | |
3099 | # elif defined(WIN32) | |
3100 | # if defined(__BORLANDC__) | |
3101 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3102 | # elif defined(UNDER_CE) |
3103 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3104 | structure at all | |
3105 | */ | |
0d7a5398 NIS |
3106 | # else |
3107 | f->_file = -1; | |
3108 | # endif | |
3109 | return 1; | |
3110 | # else | |
3111 | #if 0 | |
37725cdc | 3112 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3113 | (which isn't thread safe) instead |
37725cdc | 3114 | */ |
0d7a5398 NIS |
3115 | # error "Don't know how to set FILE.fileno on your platform" |
3116 | #endif | |
8772537c | 3117 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3118 | return 0; |
3119 | # endif | |
3120 | } | |
3121 | ||
1751d015 | 3122 | IV |
f62ce20a | 3123 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3124 | { |
c4420975 | 3125 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3126 | if (!stdio) { |
3127 | errno = EBADF; | |
3128 | return -1; | |
3129 | } | |
9217ff3f | 3130 | else { |
de009b76 | 3131 | const int fd = fileno(stdio); |
0d7a5398 | 3132 | int invalidate = 0; |
bbfd922f | 3133 | IV result = 0; |
1d791a44 | 3134 | int dupfd = -1; |
4ee39169 | 3135 | dSAVEDERRNO; |
a2e578da MHM |
3136 | #ifdef USE_ITHREADS |
3137 | dVAR; | |
3138 | #endif | |
0d7a5398 | 3139 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3140 | /* Socks lib overrides close() but stdio isn't linked to |
3141 | that library (though we are) - so we must call close() | |
3142 | on sockets on stdio's behalf. | |
3143 | */ | |
0d7a5398 NIS |
3144 | int optval; |
3145 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3146 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3147 | invalidate = 1; |
0d7a5398 | 3148 | #endif |
d8723f43 NC |
3149 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3150 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3151 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3152 | trying to close an already closed handle which somehow it still has | |
3153 | a reference to. (via.xs, I'm looking at you). */ | |
3154 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3155 | /* File descriptor still in use */ | |
0d7a5398 | 3156 | invalidate = 1; |
d8723f43 | 3157 | } |
0d7a5398 | 3158 | if (invalidate) { |
6b4ce6c8 AL |
3159 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3160 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3161 | return 0; | |
3162 | if (stdio == stdout || stdio == stderr) | |
3163 | return PerlIO_flush(f); | |
37725cdc NIS |
3164 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3165 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3166 | fileno slot of the FILE * | |
3167 | */ | |
bbfd922f | 3168 | result = PerlIO_flush(f); |
4ee39169 | 3169 | SAVE_ERRNO; |
6b4ce6c8 | 3170 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3171 | if (!invalidate) { |
9bab90c0 NC |
3172 | #ifdef USE_ITHREADS |
3173 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3174 | /* Right. We need a mutex here because for a brief while we |
3175 | will have the situation that fd is actually closed. Hence if | |
3176 | a second thread were to get into this block, its dup() would | |
3177 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3178 | Then if we get to the dup2() first, we blat the fd back |
3179 | (messing up its temporary as a side effect) only for it to | |
3180 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3181 | ||
3182 | /* There is, of course, a race condition, that any other thread | |
3183 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3184 | for the duration of this little manoeuvrer. Perhaps we |
3185 | should hold an IO mutex for the duration of every IO | |
3186 | operation if we know that invalidate doesn't work on this | |
3187 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3188 | |
3189 | Except that correctness trumps speed. | |
3190 | Advice from klortho #11912. */ | |
3191 | #endif | |
6b4ce6c8 | 3192 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3193 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3194 | if (dupfd < 0) { |
3195 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3196 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3197 | recover from here, or if closing this particular FILE * | |
3198 | is a good idea now. */ | |
3199 | } | |
3200 | #endif | |
3201 | } | |
94ccb807 JH |
3202 | } else { |
3203 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3204 | } |
0d7a5398 | 3205 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3206 | /* We treat error from stdio as success if we invalidated |
3207 | errno may NOT be expected EBADF | |
e8529473 NIS |
3208 | */ |
3209 | if (invalidate && result != 0) { | |
4ee39169 | 3210 | RESTORE_ERRNO; |
0d7a5398 | 3211 | result = 0; |
37725cdc | 3212 | } |
6b4ce6c8 AL |
3213 | #ifdef SOCKS5_VERSION_NAME |
3214 | /* in SOCKS' case, let close() determine return value */ | |
3215 | result = close(fd); | |
3216 | #endif | |
1d791a44 | 3217 | if (dupfd >= 0) { |
0d7a5398 | 3218 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3219 | PerlLIO_close(dupfd); |
711e8db2 | 3220 | #ifdef USE_ITHREADS |
9bab90c0 | 3221 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3222 | #endif |
9217ff3f NIS |
3223 | } |
3224 | return result; | |
37725cdc | 3225 | } |
1751d015 NIS |
3226 | } |
3227 | ||
9e353e3b | 3228 | SSize_t |
f62ce20a | 3229 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3230 | { |
97aff369 | 3231 | dVAR; |
c4420975 | 3232 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3233 | SSize_t got = 0; |
4d948241 NIS |
3234 | for (;;) { |
3235 | if (count == 1) { | |
3236 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3237 | /* | |
3238 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3239 | * stdio does not do that for fread() | |
3240 | */ | |
de009b76 | 3241 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3242 | if (ch != EOF) { |
3243 | *buf = ch; | |
3244 | got = 1; | |
3245 | } | |
14a5cf38 | 3246 | } |
4d948241 NIS |
3247 | else |
3248 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3249 | if (got == 0 && PerlSIO_ferror(s)) |
3250 | got = -1; | |
42a7a32f | 3251 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3252 | break; |
3253 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3254 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3255 | } |
14a5cf38 | 3256 | return got; |
9e353e3b NIS |
3257 | } |
3258 | ||
3259 | SSize_t | |
f62ce20a | 3260 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3261 | { |
14a5cf38 | 3262 | SSize_t unread = 0; |
c4420975 | 3263 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3264 | |
313e59c8 | 3265 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3266 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3267 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3268 | STDCHAR *base = PerlIO_get_base(f); | |
3269 | SSize_t cnt = PerlIO_get_cnt(f); | |
3270 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3271 | SSize_t avail = ptr - base; | |
3272 | if (avail > 0) { | |
3273 | if (avail > count) { | |
3274 | avail = count; | |
3275 | } | |
3276 | ptr -= avail; | |
3277 | Move(buf-avail,ptr,avail,STDCHAR); | |
3278 | count -= avail; | |
3279 | unread += avail; | |
3280 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3281 | if (PerlSIO_feof(s) && unread >= 0) |
3282 | PerlSIO_clearerr(s); | |
3283 | } | |
3284 | } | |
313e59c8 NIS |
3285 | else |
3286 | #endif | |
3287 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3288 | /* We can get pointer to buffer but not its base |
3289 | Do ungetc() but check chars are ending up in the | |
3290 | buffer | |
3291 | */ | |
3292 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3293 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3294 | while (count > 0) { | |
de009b76 | 3295 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3296 | if (ungetc(ch,s) != ch) { |
3297 | /* ungetc did not work */ | |
3298 | break; | |
3299 | } | |
3300 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3301 | /* Did not change pointer as expected */ | |
3302 | fgetc(s); /* get char back again */ | |
3303 | break; | |
3304 | } | |
3305 | /* It worked ! */ | |
3306 | count--; | |
3307 | unread++; | |
93679785 NIS |
3308 | } |
3309 | } | |
3310 | ||
3311 | if (count > 0) { | |
3312 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3313 | } |
3314 | return unread; | |
9e353e3b NIS |
3315 | } |
3316 | ||
3317 | SSize_t | |
f62ce20a | 3318 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3319 | { |
97aff369 | 3320 | dVAR; |
4d948241 NIS |
3321 | SSize_t got; |
3322 | for (;;) { | |
3323 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3324 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3325 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3326 | break; |
3327 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3328 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3329 | } |
3330 | return got; | |
9e353e3b NIS |
3331 | } |
3332 | ||
94a175e1 | 3333 | IV |
f62ce20a | 3334 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3335 | { |
c4420975 | 3336 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3337 | PERL_UNUSED_CONTEXT; |
3338 | ||
94a175e1 | 3339 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3340 | } |
3341 | ||
3342 | Off_t | |
f62ce20a | 3343 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3344 | { |
c4420975 | 3345 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3346 | PERL_UNUSED_CONTEXT; |
3347 | ||
94a175e1 | 3348 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3349 | } |
3350 | ||
3351 | IV | |
f62ce20a | 3352 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3353 | { |
c4420975 | 3354 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3355 | PERL_UNUSED_CONTEXT; |
3356 | ||
14a5cf38 JH |
3357 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3358 | return PerlSIO_fflush(stdio); | |
3359 | } | |
3360 | else { | |
6f207bd3 | 3361 | NOOP; |
88b61e10 | 3362 | #if 0 |
14a5cf38 JH |
3363 | /* |
3364 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3365 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3366 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3367 | * layer read-to-read |
14a5cf38 JH |
3368 | */ |
3369 | /* | |
71200d45 | 3370 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3371 | */ |
4ee39169 | 3372 | dSAVE_ERRNO; |
14a5cf38 | 3373 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3374 | RESTORE_ERRNO; |
88b61e10 | 3375 | #endif |
14a5cf38 JH |
3376 | } |
3377 | return 0; | |
9e353e3b NIS |
3378 | } |
3379 | ||
3380 | IV | |
f62ce20a | 3381 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3382 | { |
96a5add6 AL |
3383 | PERL_UNUSED_CONTEXT; |
3384 | ||
14a5cf38 | 3385 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3386 | } |
3387 | ||
3388 | IV | |
f62ce20a | 3389 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3390 | { |
96a5add6 AL |
3391 | PERL_UNUSED_CONTEXT; |
3392 | ||
263df5f1 | 3393 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3394 | } |
3395 | ||
3396 | void | |
f62ce20a | 3397 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3398 | { |
96a5add6 AL |
3399 | PERL_UNUSED_CONTEXT; |
3400 | ||
14a5cf38 | 3401 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3402 | } |
3403 | ||
3404 | void | |
f62ce20a | 3405 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3406 | { |
96a5add6 AL |
3407 | PERL_UNUSED_CONTEXT; |
3408 | ||
9e353e3b | 3409 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3410 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3411 | #else |
bd61b366 | 3412 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3413 | #endif |
3414 | } | |
3415 | ||
3416 | #ifdef FILE_base | |
3417 | STDCHAR * | |
f62ce20a | 3418 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3419 | { |
c4420975 | 3420 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3421 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3422 | } |
3423 | ||
3424 | Size_t | |
f62ce20a | 3425 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3426 | { |
c4420975 | 3427 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3428 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3429 | } |
3430 | #endif | |
3431 | ||
3432 | #ifdef USE_STDIO_PTR | |
3433 | STDCHAR * | |
f62ce20a | 3434 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3435 | { |
c4420975 | 3436 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3437 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3438 | } |
3439 | ||
3440 | SSize_t | |
f62ce20a | 3441 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3442 | { |
c4420975 | 3443 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3444 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3445 | } |
3446 | ||
3447 | void | |
f62ce20a | 3448 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3449 | { |
c4420975 | 3450 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3451 | if (ptr != NULL) { |
9e353e3b | 3452 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3453 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3454 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3455 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3456 | #endif |
3457 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3458 | /* |
71200d45 | 3459 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3460 | */ |
3461 | return; | |
9e353e3b | 3462 | #endif |
22569500 | 3463 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3464 | PerlProc_abort(); |
22569500 | 3465 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3466 | } |
3467 | /* | |
71200d45 | 3468 | * Now (or only) set cnt |
14a5cf38 | 3469 | */ |
9e353e3b | 3470 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3471 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3472 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3473 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3474 | PerlSIO_set_ptr(stdio, |
3475 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3476 | cnt)); | |
22569500 | 3477 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3478 | PerlProc_abort(); |
22569500 NIS |
3479 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3480 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3481 | } |
3482 | ||
93679785 | 3483 | |
9e353e3b NIS |
3484 | #endif |
3485 | ||
93679785 NIS |
3486 | IV |
3487 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3488 | { | |
c4420975 | 3489 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3490 | int c; |
96a5add6 AL |
3491 | PERL_UNUSED_CONTEXT; |
3492 | ||
93679785 NIS |
3493 | /* |
3494 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3495 | */ | |
3496 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3497 | if (PerlSIO_fflush(stdio) != 0) | |
3498 | return EOF; | |
3499 | } | |
f3be3723 BL |
3500 | for (;;) { |
3501 | c = PerlSIO_fgetc(stdio); | |
3502 | if (c != EOF) | |
3503 | break; | |
3504 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3505 | return EOF; | |
3506 | PERL_ASYNC_CHECK(); | |
3507 | SETERRNO(0,0); | |
3508 | } | |
93679785 NIS |
3509 | |
3510 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3511 | |
3512 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3513 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3514 | /* Fake ungetc() to the real buffer in case system's ungetc |
3515 | goes elsewhere | |
3516 | */ | |
3517 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3518 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3519 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3520 | if (ptr == base+1) { | |
3521 | *--ptr = (STDCHAR) c; | |
3522 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3523 | if (PerlSIO_feof(stdio)) | |
3524 | PerlSIO_clearerr(stdio); | |
3525 | return 0; | |
3526 | } | |
3527 | } | |
313e59c8 NIS |
3528 | else |
3529 | #endif | |
3530 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3531 | STDCHAR ch = c; |
3532 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3533 | return 0; | |
3534 | } | |
3535 | } | |
93679785 NIS |
3536 | #endif |
3537 | ||
3538 | #if defined(VMS) | |
3539 | /* An ungetc()d char is handled separately from the regular | |
3540 | * buffer, so we stuff it in the buffer ourselves. | |
3541 | * Should never get called as should hit code above | |
3542 | */ | |
bad9695d NIS |
3543 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3544 | (*stdio)->_cnt++; | |
93679785 NIS |
3545 | #else |
3546 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3547 | using ungetc(). |
93679785 NIS |
3548 | */ |
3549 | if (PerlSIO_ungetc(c, stdio) != c) | |
3550 | return EOF; | |
3551 | #endif | |
3552 | return 0; | |
3553 | } | |
3554 | ||
3555 | ||
3556 | ||
27da23d5 | 3557 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3558 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3559 | "stdio", |
3560 | sizeof(PerlIOStdio), | |
86e05cf2 | 3561 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3562 | PerlIOStdio_pushed, |
2376d97d | 3563 | PerlIOBase_popped, |
14a5cf38 | 3564 | PerlIOStdio_open, |
86e05cf2 | 3565 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3566 | NULL, |
3567 | PerlIOStdio_fileno, | |
71200d45 | 3568 | PerlIOStdio_dup, |
14a5cf38 JH |
3569 | PerlIOStdio_read, |
3570 | PerlIOStdio_unread, | |
3571 | PerlIOStdio_write, | |
3572 | PerlIOStdio_seek, | |
3573 | PerlIOStdio_tell, | |
3574 | PerlIOStdio_close, | |
3575 | PerlIOStdio_flush, | |
3576 | PerlIOStdio_fill, | |
3577 | PerlIOStdio_eof, | |
3578 | PerlIOStdio_error, | |
3579 | PerlIOStdio_clearerr, | |
3580 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3581 | #ifdef FILE_base |
14a5cf38 JH |
3582 | PerlIOStdio_get_base, |
3583 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3584 | #else |
14a5cf38 JH |
3585 | NULL, |
3586 | NULL, | |
9e353e3b NIS |
3587 | #endif |
3588 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3589 | PerlIOStdio_get_ptr, |
3590 | PerlIOStdio_get_cnt, | |
15b61c98 | 3591 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3592 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3593 | # else |
3594 | NULL, | |
3595 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3596 | #else | |
3597 | NULL, | |
14a5cf38 JH |
3598 | NULL, |
3599 | NULL, | |
15b61c98 | 3600 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3601 | }; |
3602 | ||
b9d6bf13 JH |
3603 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3604 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3605 | FILE * |
81428673 | 3606 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3607 | { |
e87a358a | 3608 | dTHX; |
81428673 NIS |
3609 | FILE *stdio = NULL; |
3610 | if (PerlIOValid(f)) { | |
3611 | char buf[8]; | |
3612 | PerlIO_flush(f); | |
3613 | if (!mode || !*mode) { | |
3614 | mode = PerlIO_modestr(f, buf); | |
3615 | } | |
3616 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3617 | if (stdio) { | |
3618 | PerlIOl *l = *f; | |
9f75cc58 | 3619 | PerlIO *f2; |
81428673 NIS |
3620 | /* De-link any lower layers so new :stdio sticks */ |
3621 | *f = NULL; | |
a0714e2c | 3622 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3623 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3624 | s->stdio = stdio; |
6b54a403 | 3625 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3626 | /* Link previous lower layers under new one */ |
3627 | *PerlIONext(f) = l; | |
3628 | } | |
3629 | else { | |
3630 | /* restore layers list */ | |
3631 | *f = l; | |
3632 | } | |
a33cf58c | 3633 | } |
14a5cf38 JH |
3634 | } |
3635 | return stdio; | |
9e353e3b NIS |
3636 | } |
3637 | ||
81428673 | 3638 | |
9e353e3b NIS |
3639 | FILE * |
3640 | PerlIO_findFILE(PerlIO *f) | |
3641 | { | |
14a5cf38 | 3642 | PerlIOl *l = *f; |
bbbc33d0 | 3643 | FILE *stdio; |
14a5cf38 JH |
3644 | while (l) { |
3645 | if (l->tab == &PerlIO_stdio) { | |
3646 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3647 | return s->stdio; | |
3648 | } | |
3649 | l = *PerlIONext(&l); | |
f7e7eb72 | 3650 | } |
4b069b44 | 3651 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3652 | /* However, we're not really exporting a FILE * to someone else (who |
3653 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
3654 | So we need to undo its refernce count increase on the underlying file | |
3655 | descriptor. We have to do this, because if the loop above returns you | |
3656 | the FILE *, then *it* didn't increase any reference count. So there's | |
3657 | only one way to be consistent. */ | |
3658 | stdio = PerlIO_exportFILE(f, NULL); | |
3659 | if (stdio) { | |
3660 | const int fd = fileno(stdio); | |
3661 | if (fd >= 0) | |
3662 | PerlIOUnix_refcnt_dec(fd); | |
3663 | } | |
3664 | return stdio; | |
9e353e3b NIS |
3665 | } |
3666 | ||
b9d6bf13 | 3667 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3668 | void |
3669 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3670 | { | |
27da23d5 | 3671 | dVAR; |
22569500 NIS |
3672 | PerlIOl *l; |
3673 | while ((l = *p)) { | |
3674 | if (l->tab == &PerlIO_stdio) { | |
3675 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3676 | if (s->stdio == f) { | |
3677 | dTHX; | |
6b54a403 NC |
3678 | const int fd = fileno(f); |
3679 | if (fd >= 0) | |
3680 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3681 | PerlIO_pop(aTHX_ p); |
3682 | return; | |
3683 | } | |
3684 | } | |
3685 | p = PerlIONext(p); | |
3686 | } | |
3687 | return; | |
9e353e3b NIS |
3688 | } |
3689 | ||
3690 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3691 | /* |
71200d45 | 3692 | * perlio buffer layer |
14a5cf38 | 3693 | */ |
9e353e3b | 3694 | |
5e2ab84b | 3695 | IV |
2dc2558e | 3696 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3697 | { |
14a5cf38 | 3698 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3699 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3700 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3701 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3702 | } | |
4b069b44 | 3703 | if (*PerlIONext(f)) { |
de009b76 | 3704 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3705 | if (posn != (Off_t) - 1) { |
3706 | b->posn = posn; | |
3707 | } | |
14a5cf38 | 3708 | } |
2dc2558e | 3709 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3710 | } |
3711 | ||
9e353e3b | 3712 | PerlIO * |
14a5cf38 JH |
3713 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3714 | IV n, const char *mode, int fd, int imode, int perm, | |
3715 | PerlIO *f, int narg, SV **args) | |
3716 | { | |
04892f78 | 3717 | if (PerlIOValid(f)) { |
14a5cf38 | 3718 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3719 | PerlIO_funcs *tab = |
3720 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3721 | if (tab && tab->Open) | |
3722 | next = | |
3723 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3724 | next, narg, args); | |
2dc2558e | 3725 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3726 | return NULL; |
3727 | } | |
3728 | } | |
3729 | else { | |
04892f78 | 3730 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3731 | int init = 0; |
3b6c1aba | 3732 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3733 | init = 1; |
3734 | /* | |
71200d45 | 3735 | * mode++; |
14a5cf38 JH |
3736 | */ |
3737 | } | |
67363c0d JH |
3738 | if (tab && tab->Open) |
3739 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3740 | f, narg, args); | |
3741 | else | |
3742 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3743 | if (f) { |
22569500 | 3744 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3745 | /* |
3746 | * if push fails during open, open fails. close will pop us. | |
3747 | */ | |
3748 | PerlIO_close (f); | |
3749 | return NULL; | |
3750 | } else { | |
3751 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3752 | if (init && fd == 2) { |
3753 | /* | |
3754 | * Initial stderr is unbuffered | |
3755 | */ | |
3756 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3757 | } | |
23b84778 IZ |
3758 | #ifdef PERLIO_USING_CRLF |
3759 | # ifdef PERLIO_IS_BINMODE_FD | |
3760 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3761 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3762 | else |
3763 | # endif | |
3764 | /* | |
3765 | * do something about failing setmode()? --jhi | |
3766 | */ | |
3767 | PerlLIO_setmode(fd, O_BINARY); | |
3768 | #endif | |
14a5cf38 JH |
3769 | } |
3770 | } | |
ee518936 | 3771 | } |
14a5cf38 | 3772 | return f; |
9e353e3b NIS |
3773 | } |
3774 | ||
14a5cf38 JH |
3775 | /* |
3776 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3777 | * read or write state. For write state, we put the postponed data through |
3778 | * the next layers. For read state, we seek() the next layers to the | |
3779 | * offset given by current position in the buffer, and discard the buffer | |
3780 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3781 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3782 | */ |
9e353e3b | 3783 | IV |
f62ce20a | 3784 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3785 | { |
dcda55fc | 3786 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3787 | int code = 0; |
04892f78 | 3788 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3789 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3790 | /* | |
71200d45 | 3791 | * write() the buffer |
14a5cf38 | 3792 | */ |
de009b76 AL |
3793 | const STDCHAR *buf = b->buf; |
3794 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3795 | while (p < b->ptr) { |
3796 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3797 | if (count > 0) { | |
3798 | p += count; | |
3799 | } | |
3800 | else if (count < 0 || PerlIO_error(n)) { | |
3801 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3802 | code = -1; | |
3803 | break; | |
3804 | } | |
3805 | } | |
3806 | b->posn += (p - buf); | |
3807 | } | |
3808 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3809 | STDCHAR *buf = PerlIO_get_base(f); | |
3810 | /* | |
71200d45 | 3811 | * Note position change |
14a5cf38 JH |
3812 | */ |
3813 | b->posn += (b->ptr - buf); | |
3814 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3815 | /* We did not consume all of it - try and seek downstream to |
3816 | our logical position | |
14a5cf38 | 3817 | */ |
4b069b44 | 3818 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3819 | /* Reload n as some layers may pop themselves on seek */ |
3820 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3821 | } |
ba5c3fe9 | 3822 | else { |
4b069b44 NIS |
3823 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3824 | data is lost for good - so return saying "ok" having undone | |
3825 | the position adjust | |
3826 | */ | |
3827 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3828 | return code; |
3829 | } | |
14a5cf38 JH |
3830 | } |
3831 | } | |
3832 | b->ptr = b->end = b->buf; | |
3833 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3834 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3835 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3836 | code = -1; |
3837 | return code; | |
6f9d8c32 NIS |
3838 | } |
3839 | ||
93c2c2ec IZ |
3840 | /* This discards the content of the buffer after b->ptr, and rereads |
3841 | * the buffer from the position off in the layer downstream; here off | |
3842 | * is at offset corresponding to b->ptr - b->buf. | |
3843 | */ | |
06da4f11 | 3844 | IV |
f62ce20a | 3845 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3846 | { |
dcda55fc | 3847 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3848 | PerlIO *n = PerlIONext(f); |
3849 | SSize_t avail; | |
3850 | /* | |
4b069b44 NIS |
3851 | * Down-stream flush is defined not to loose read data so is harmless. |
3852 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3853 | */ |
93c2c2ec | 3854 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3855 | return -1; |
3856 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3857 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3858 | |
3859 | if (!b->buf) | |
22569500 | 3860 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3861 | |
0f0eef27 | 3862 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3863 | |
14a5cf38 | 3864 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3865 | |
3866 | if (!PerlIOValid(n)) { | |
3867 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3868 | return -1; | |
3869 | } | |
3870 | ||
14a5cf38 JH |
3871 | if (PerlIO_fast_gets(n)) { |
3872 | /* | |
04892f78 | 3873 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3874 | * ->Read() because that will loop till it gets what we asked for |
3875 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3876 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3877 | */ |
3878 | avail = PerlIO_get_cnt(n); | |
3879 | if (avail <= 0) { | |
3880 | avail = PerlIO_fill(n); | |
3881 | if (avail == 0) | |
3882 | avail = PerlIO_get_cnt(n); | |
3883 | else { | |
3884 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3885 | avail = 0; | |
3886 | } | |
3887 | } | |
3888 | if (avail > 0) { | |
3889 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3890 | const SSize_t cnt = avail; |
eb160463 | 3891 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3892 | avail = b->bufsiz; |
3893 | Copy(ptr, b->buf, avail, STDCHAR); | |
3894 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3895 | } | |
3896 | } | |
3897 | else { | |
3898 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3899 | } | |
3900 | if (avail <= 0) { | |
3901 | if (avail == 0) | |
3902 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3903 | else | |
3904 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3905 | return -1; | |
3906 | } | |
3907 | b->end = b->buf + avail; | |
3908 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3909 | return 0; | |
06da4f11 NIS |
3910 | } |
3911 | ||
6f9d8c32 | 3912 | SSize_t |
f62ce20a | 3913 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3914 | { |
04892f78 | 3915 | if (PerlIOValid(f)) { |
dcda55fc | 3916 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3917 | if (!b->ptr) |
3918 | PerlIO_get_base(f); | |
f62ce20a | 3919 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3920 | } |
3921 | return 0; | |
6f9d8c32 NIS |
3922 | } |
3923 | ||
9e353e3b | 3924 | SSize_t |
f62ce20a | 3925 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3926 | { |
14a5cf38 | 3927 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3928 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3929 | SSize_t unread = 0; |
3930 | SSize_t avail; | |
3931 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3932 | PerlIO_flush(f); | |
3933 | if (!b->buf) | |
3934 | PerlIO_get_base(f); | |
3935 | if (b->buf) { | |
3936 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3937 | /* | |
3938 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3939 | * which have been read back to buffer start |
14a5cf38 JH |
3940 | */ |
3941 | avail = (b->ptr - b->buf); | |
3942 | } | |
3943 | else { | |
3944 | /* | |
3945 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3946 | * unread |
14a5cf38 JH |
3947 | */ |
3948 | avail = b->bufsiz; | |
3949 | b->end = b->buf + avail; | |
3950 | b->ptr = b->end; | |
3951 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3952 | /* | |
71200d45 | 3953 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3954 | */ |
3955 | b->posn -= b->bufsiz; | |
3956 | } | |
3957 | if (avail > (SSize_t) count) { | |
3958 | /* | |
71200d45 | 3959 | * If we have space for more than count, just move count |
14a5cf38 JH |
3960 | */ |
3961 | avail = count; | |
3962 | } | |
3963 | if (avail > 0) { | |
3964 | b->ptr -= avail; | |
3965 | buf -= avail; | |
3966 | /* | |
3967 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3968 | * there |
14a5cf38 JH |
3969 | */ |
3970 | if (buf != b->ptr) { | |
3971 | Copy(buf, b->ptr, avail, STDCHAR); | |
3972 | } | |
3973 | count -= avail; | |
3974 | unread += avail; | |
3975 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3976 | } | |
3977 | } | |
93679785 NIS |
3978 | if (count > 0) { |
3979 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3980 | } | |
14a5cf38 | 3981 | return unread; |
760ac839 LW |
3982 | } |
3983 | ||
9e353e3b | 3984 | SSize_t |
f62ce20a | 3985 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3986 | { |
de009b76 | 3987 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3988 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3989 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3990 | Size_t written = 0; |
3991 | if (!b->buf) | |
3992 | PerlIO_get_base(f); | |
3993 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3994 | return 0; | |
0678cb22 NIS |
3995 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3996 | if (PerlIO_flush(f) != 0) { | |
3997 | return 0; | |
3998 | } | |
3999 | } | |
ee56a6b9 CS |
4000 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4001 | flushptr = buf + count; | |
4002 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4003 | --flushptr; | |
4004 | } | |
14a5cf38 JH |
4005 | while (count > 0) { |
4006 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
4007 | if ((SSize_t) count < avail) | |
4008 | avail = count; | |
ee56a6b9 CS |
4009 | if (flushptr > buf && flushptr <= buf + avail) |
4010 | avail = flushptr - buf; | |
14a5cf38 | 4011 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4012 | if (avail) { |
4013 | Copy(buf, b->ptr, avail, STDCHAR); | |
4014 | count -= avail; | |
4015 | buf += avail; | |
4016 | written += avail; | |
4017 | b->ptr += avail; | |
4018 | if (buf == flushptr) | |
4019 | PerlIO_flush(f); | |
14a5cf38 JH |
4020 | } |
4021 | if (b->ptr >= (b->buf + b->bufsiz)) | |
4022 | PerlIO_flush(f); | |
4023 | } | |
4024 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4025 | PerlIO_flush(f); | |
4026 | return written; | |
9e353e3b NIS |
4027 | } |
4028 | ||
94a175e1 | 4029 | IV |
f62ce20a | 4030 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4031 | { |
14a5cf38 JH |
4032 | IV code; |
4033 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4034 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4035 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4036 | if (code == 0) { | |
de009b76 | 4037 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4038 | b->posn = PerlIO_tell(PerlIONext(f)); |
4039 | } | |
9e353e3b | 4040 | } |
14a5cf38 | 4041 | return code; |
9e353e3b NIS |
4042 | } |
4043 | ||
4044 | Off_t | |
f62ce20a | 4045 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4046 | { |
dcda55fc | 4047 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4048 | /* |
71200d45 | 4049 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4050 | */ |
4051 | Off_t posn = b->posn; | |
37725cdc | 4052 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4053 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4054 | #if 1 | |
4055 | /* As O_APPEND files are normally shared in some sense it is better | |
4056 | to flush : | |
4057 | */ | |
4058 | PerlIO_flush(f); | |
4059 | #else | |
37725cdc | 4060 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4061 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4062 | #endif | |
4063 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4064 | } | |
14a5cf38 JH |
4065 | if (b->buf) { |
4066 | /* | |
71200d45 | 4067 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4068 | */ |
4069 | posn += (b->ptr - b->buf); | |
4070 | } | |
4071 | return posn; | |
9e353e3b NIS |
4072 | } |
4073 | ||
4074 | IV | |
44798d05 NIS |
4075 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4076 | { | |
de009b76 AL |
4077 | const IV code = PerlIOBase_popped(aTHX_ f); |
4078 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4079 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4080 | Safefree(b->buf); | |
4081 | } | |
dcda55fc | 4082 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4083 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4084 | return code; | |
4085 | } | |
4086 | ||
4087 | IV | |
f62ce20a | 4088 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4089 | { |
de009b76 AL |
4090 | const IV code = PerlIOBase_close(aTHX_ f); |
4091 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4092 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4093 | Safefree(b->buf); |
14a5cf38 | 4094 | } |
dcda55fc | 4095 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4096 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4097 | return code; | |
760ac839 LW |
4098 | } |
4099 | ||
9e353e3b | 4100 | STDCHAR * |
f62ce20a | 4101 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4102 | { |
dcda55fc | 4103 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4104 | if (!b->buf) |
4105 | PerlIO_get_base(f); | |
4106 | return b->ptr; | |
9e353e3b NIS |
4107 | } |
4108 | ||
05d1247b | 4109 | SSize_t |
f62ce20a | 4110 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4111 | { |
dcda55fc | 4112 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4113 | if (!b->buf) |
4114 | PerlIO_get_base(f); | |
4115 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4116 | return (b->end - b->ptr); | |
4117 | return 0; | |
9e353e3b NIS |
4118 | } |
4119 | ||
4120 | STDCHAR * | |
f62ce20a | 4121 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4122 | { |
dcda55fc | 4123 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4124 | PERL_UNUSED_CONTEXT; |
4125 | ||
14a5cf38 JH |
4126 | if (!b->buf) { |
4127 | if (!b->bufsiz) | |
4128 | b->bufsiz = 4096; | |
a02a5408 | 4129 | b->buf = Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4130 | if (!b->buf) { |
4131 | b->buf = (STDCHAR *) & b->oneword; | |
4132 | b->bufsiz = sizeof(b->oneword); | |
4133 | } | |
dcda55fc | 4134 | b->end = b->ptr = b->buf; |
06da4f11 | 4135 | } |
14a5cf38 | 4136 | return b->buf; |
9e353e3b NIS |
4137 | } |
4138 | ||
4139 | Size_t | |
f62ce20a | 4140 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4141 | { |
dcda55fc | 4142 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4143 | if (!b->buf) |
4144 | PerlIO_get_base(f); | |
4145 | return (b->end - b->buf); | |
9e353e3b NIS |
4146 | } |
4147 | ||
4148 | void | |
f62ce20a | 4149 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4150 | { |
dcda55fc | 4151 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4152 | #ifndef DEBUGGING |
4153 | PERL_UNUSED_ARG(cnt); | |
4154 | #endif | |
14a5cf38 JH |
4155 | if (!b->buf) |
4156 | PerlIO_get_base(f); | |
4157 | b->ptr = ptr; | |
b727803b RGS |
4158 | assert(PerlIO_get_cnt(f) == cnt); |
4159 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4160 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4161 | } |
4162 | ||
71200d45 | 4163 | PerlIO * |
ecdeb87c | 4164 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4165 | { |
ecdeb87c | 4166 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4167 | } |
4168 | ||
4169 | ||
4170 | ||
27da23d5 | 4171 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4172 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4173 | "perlio", |
4174 | sizeof(PerlIOBuf), | |
86e05cf2 | 4175 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4176 | PerlIOBuf_pushed, |
44798d05 | 4177 | PerlIOBuf_popped, |
14a5cf38 | 4178 | PerlIOBuf_open, |
86e05cf2 | 4179 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4180 | NULL, |
4181 | PerlIOBase_fileno, | |
71200d45 | 4182 | PerlIOBuf_dup, |
14a5cf38 JH |
4183 | PerlIOBuf_read, |
4184 | PerlIOBuf_unread, | |
4185 | PerlIOBuf_write, | |
4186 | PerlIOBuf_seek, | |
4187 | PerlIOBuf_tell, | |
4188 | PerlIOBuf_close, | |
4189 | PerlIOBuf_flush, | |
4190 | PerlIOBuf_fill, | |
4191 | PerlIOBase_eof, | |
4192 | PerlIOBase_error, | |
4193 | PerlIOBase_clearerr, | |
4194 | PerlIOBase_setlinebuf, | |
4195 | PerlIOBuf_get_base, | |
4196 | PerlIOBuf_bufsiz, | |
4197 | PerlIOBuf_get_ptr, | |
4198 | PerlIOBuf_get_cnt, | |
4199 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4200 | }; |
4201 | ||
66ecd56b | 4202 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4203 | /* |
71200d45 | 4204 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4205 | */ |
5e2ab84b NIS |
4206 | |
4207 | IV | |
f62ce20a | 4208 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4209 | { |
14a5cf38 | 4210 | /* |
71200d45 | 4211 | * Should never happen |
14a5cf38 JH |
4212 | */ |
4213 | PerlIO_flush(f); | |
4214 | return 0; | |
5e2ab84b NIS |
4215 | } |
4216 | ||
4217 | IV | |
f62ce20a | 4218 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4219 | { |
14a5cf38 | 4220 | /* |
71200d45 | 4221 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4222 | */ |
4223 | PerlIO_flush(f); | |
4224 | return PerlIO_close(f); | |
5e2ab84b NIS |
4225 | } |
4226 | ||
94a175e1 | 4227 | IV |
f62ce20a | 4228 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4229 | { |
14a5cf38 | 4230 | /* |
71200d45 | 4231 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4232 | */ |
4233 | PerlIO_flush(f); | |
4234 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4235 | } |
4236 | ||
4237 | ||
4238 | IV | |
f62ce20a | 4239 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4240 | { |
dcda55fc | 4241 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4242 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4243 | Safefree(b->buf); |
14a5cf38 JH |
4244 | b->buf = NULL; |
4245 | } | |
4246 | PerlIO_pop(aTHX_ f); | |
4247 | return 0; | |
5e2ab84b NIS |
4248 | } |
4249 | ||
4250 | void | |
f62ce20a | 4251 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4252 | { |
14a5cf38 JH |
4253 | if (cnt <= 0) { |
4254 | PerlIO_flush(f); | |
4255 | } | |
4256 | else { | |
f62ce20a | 4257 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4258 | } |
5e2ab84b NIS |
4259 | } |
4260 | ||
4261 | IV | |
2dc2558e | 4262 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4263 | { |
de009b76 | 4264 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4265 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4266 | /* |
71200d45 NIS |
4267 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4268 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4269 | */ |
4270 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4271 | (PerlIOBase(PerlIONext(f))-> | |
4272 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4273 | return code; | |
5e2ab84b NIS |
4274 | } |
4275 | ||
4276 | SSize_t | |
f62ce20a | 4277 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4278 | { |
14a5cf38 JH |
4279 | SSize_t avail = PerlIO_get_cnt(f); |
4280 | SSize_t got = 0; | |
eb160463 | 4281 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4282 | avail = count; |
4283 | if (avail > 0) | |
f62ce20a | 4284 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4285 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4286 | const SSize_t more = |
14a5cf38 JH |
4287 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4288 | if (more >= 0 || got == 0) | |
4289 | got += more; | |
4290 | } | |
4291 | return got; | |
5e2ab84b NIS |
4292 | } |
4293 | ||
27da23d5 | 4294 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4295 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4296 | "pending", |
4297 | sizeof(PerlIOBuf), | |
86e05cf2 | 4298 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4299 | PerlIOPending_pushed, |
44798d05 | 4300 | PerlIOBuf_popped, |
14a5cf38 | 4301 | NULL, |
86e05cf2 | 4302 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4303 | NULL, |
4304 | PerlIOBase_fileno, | |
71200d45 | 4305 | PerlIOBuf_dup, |
14a5cf38 JH |
4306 | PerlIOPending_read, |
4307 | PerlIOBuf_unread, | |
4308 | PerlIOBuf_write, | |
4309 | PerlIOPending_seek, | |
4310 | PerlIOBuf_tell, | |
4311 | PerlIOPending_close, | |
4312 | PerlIOPending_flush, | |
4313 | PerlIOPending_fill, | |
4314 | PerlIOBase_eof, | |
4315 | PerlIOBase_error, | |
4316 | PerlIOBase_clearerr, | |
4317 | PerlIOBase_setlinebuf, | |
4318 | PerlIOBuf_get_base, | |
4319 | PerlIOBuf_bufsiz, | |
4320 | PerlIOBuf_get_ptr, | |
4321 | PerlIOBuf_get_cnt, | |
4322 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4323 | }; |
4324 | ||
4325 | ||
4326 | ||
4327 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4328 | /* |
4329 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4330 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4331 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4332 | * |
4333 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4334 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4335 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4336 | * that it ends at c->nl; these two cases can be distinguished by | |
4337 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4338 | * _unread() and _flush() calls. | |
4339 | * It only matters for read operations. | |
66ecd56b NIS |
4340 | */ |
4341 | ||
14a5cf38 | 4342 | typedef struct { |
22569500 NIS |
4343 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4344 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4345 | * buffer */ |
99efab12 NIS |
4346 | } PerlIOCrlf; |
4347 | ||
ff1e3883 JD |
4348 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4349 | * Otherwise the :crlf layer would always revert back to | |
4350 | * raw mode. | |
4351 | */ | |
4352 | static void | |
4353 | S_inherit_utf8_flag(PerlIO *f) | |
4354 | { | |
4355 | PerlIO *g = PerlIONext(f); | |
4356 | if (PerlIOValid(g)) { | |
4357 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4358 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4359 | } | |
4360 | } | |
4361 | } | |
4362 | ||
f5b9d040 | 4363 | IV |
2dc2558e | 4364 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4365 | { |
14a5cf38 JH |
4366 | IV code; |
4367 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4368 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4369 | #if 0 |
14a5cf38 | 4370 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4371 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4372 | PerlIOBase(f)->flags); |
5e2ab84b | 4373 | #endif |
8229d19f JH |
4374 | { |
4375 | /* Enable the first CRLF capable layer you can find, but if none | |
4376 | * found, the one we just pushed is fine. This results in at | |
4377 | * any given moment at most one CRLF-capable layer being enabled | |
4378 | * in the whole layer stack. */ | |
4379 | PerlIO *g = PerlIONext(f); | |
ff1e3883 | 4380 | while (PerlIOValid(g)) { |
8229d19f JH |
4381 | PerlIOl *b = PerlIOBase(g); |
4382 | if (b && b->tab == &PerlIO_crlf) { | |
4383 | if (!(b->flags & PERLIO_F_CRLF)) | |
4384 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4385 | S_inherit_utf8_flag(g); |
8229d19f JH |
4386 | PerlIO_pop(aTHX_ f); |
4387 | return code; | |
4388 | } | |
4389 | g = PerlIONext(g); | |
4390 | } | |
4391 | } | |
ff1e3883 | 4392 | S_inherit_utf8_flag(f); |
14a5cf38 | 4393 | return code; |
f5b9d040 NIS |
4394 | } |
4395 | ||
4396 | ||
99efab12 | 4397 | SSize_t |
f62ce20a | 4398 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4399 | { |
dcda55fc | 4400 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4401 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4402 | *(c->nl) = 0xd; |
4403 | c->nl = NULL; | |
4404 | } | |
4405 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4406 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4407 | else { |
4408 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4409 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4410 | SSize_t unread = 0; | |
4411 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4412 | PerlIO_flush(f); | |
4413 | if (!b->buf) | |
4414 | PerlIO_get_base(f); | |
4415 | if (b->buf) { | |
4416 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4417 | b->end = b->ptr = b->buf + b->bufsiz; | |
4418 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4419 | b->posn -= b->bufsiz; | |
4420 | } | |
4421 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4422 | const int ch = *--buf; |
14a5cf38 JH |
4423 | if (ch == '\n') { |
4424 | if (b->ptr - 2 >= b->buf) { | |
4425 | *--(b->ptr) = 0xa; | |
4426 | *--(b->ptr) = 0xd; | |
4427 | unread++; | |
4428 | count--; | |
4429 | } | |
4430 | else { | |
93c2c2ec IZ |
4431 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4432 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4433 | unread++; | |
4434 | count--; | |
14a5cf38 JH |
4435 | } |
4436 | } | |
4437 | else { | |
4438 | *--(b->ptr) = ch; | |
4439 | unread++; | |
4440 | count--; | |
4441 | } | |
4442 | } | |
4443 | } | |
4444 | return unread; | |
4445 | } | |
99efab12 NIS |
4446 | } |
4447 | ||
93c2c2ec | 4448 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4449 | SSize_t |
f62ce20a | 4450 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4451 | { |
dcda55fc | 4452 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4453 | if (!b->buf) |
4454 | PerlIO_get_base(f); | |
4455 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4456 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4457 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4458 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4459 | scan: |
4460 | while (nl < b->end && *nl != 0xd) | |
4461 | nl++; | |
4462 | if (nl < b->end && *nl == 0xd) { | |
4463 | test: | |
4464 | if (nl + 1 < b->end) { | |
4465 | if (nl[1] == 0xa) { | |
4466 | *nl = '\n'; | |
4467 | c->nl = nl; | |
4468 | } | |
4469 | else { | |
4470 | /* | |
71200d45 | 4471 | * Not CR,LF but just CR |
14a5cf38 JH |
4472 | */ |
4473 | nl++; | |
4474 | goto scan; | |
4475 | } | |
4476 | } | |
4477 | else { | |
4478 | /* | |
71200d45 | 4479 | * Blast - found CR as last char in buffer |
14a5cf38 | 4480 | */ |
e87a358a | 4481 | |
14a5cf38 JH |
4482 | if (b->ptr < nl) { |
4483 | /* | |
4484 | * They may not care, defer work as long as | |
71200d45 | 4485 | * possible |
14a5cf38 | 4486 | */ |
a0d1d361 | 4487 | c->nl = nl; |
14a5cf38 JH |
4488 | return (nl - b->ptr); |
4489 | } | |
4490 | else { | |
4491 | int code; | |
22569500 | 4492 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4493 | * flush() is concerned */ |
22569500 | 4494 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4495 | /* Note as we have moved buf up flush's |
4496 | posn += ptr-buf | |
4497 | will naturally make posn point at CR | |
4498 | */ | |
22569500 NIS |
4499 | b->bufsiz--; /* Buffer is thus smaller */ |
4500 | code = PerlIO_fill(f); /* Fetch some more */ | |
4501 | b->bufsiz++; /* Restore size for next time */ | |
4502 | b->buf--; /* Point at space */ | |
4503 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4504 | * off */ |
22569500 | 4505 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4506 | if (code == 0) |
22569500 | 4507 | goto test; /* fill() call worked */ |
14a5cf38 | 4508 | /* |
71200d45 | 4509 | * CR at EOF - just fall through |
14a5cf38 | 4510 | */ |
a0d1d361 | 4511 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4512 | } |
4513 | } | |
4514 | } | |
4515 | } | |
4516 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4517 | } | |
4518 | return 0; | |
99efab12 NIS |
4519 | } |
4520 | ||
4521 | void | |
f62ce20a | 4522 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4523 | { |
dcda55fc AL |
4524 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4525 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4526 | if (!b->buf) |
4527 | PerlIO_get_base(f); | |
4528 | if (!ptr) { | |
a0d1d361 | 4529 | if (c->nl) { |
14a5cf38 | 4530 | ptr = c->nl + 1; |
22569500 | 4531 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4532 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4533 | ptr--; |
4534 | } | |
4535 | } | |
14a5cf38 JH |
4536 | else { |
4537 | ptr = b->end; | |
14a5cf38 JH |
4538 | } |
4539 | ptr -= cnt; | |
4540 | } | |
4541 | else { | |
6f207bd3 | 4542 | NOOP; |
3b4bd3fd | 4543 | #if 0 |
14a5cf38 | 4544 | /* |
71200d45 | 4545 | * Test code - delete when it works ... |
14a5cf38 | 4546 | */ |
3b4bd3fd | 4547 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4548 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4549 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4550 | /* Defered CR at end of buffer case - we lied about count */ |
4551 | chk--; | |
22569500 | 4552 | } |
14a5cf38 JH |
4553 | chk -= cnt; |
4554 | ||
a0d1d361 | 4555 | if (ptr != chk ) { |
99ef548b | 4556 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4557 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4558 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4559 | } |
99ef548b | 4560 | #endif |
14a5cf38 JH |
4561 | } |
4562 | if (c->nl) { | |
4563 | if (ptr > c->nl) { | |
4564 | /* | |
71200d45 | 4565 | * They have taken what we lied about |
14a5cf38 JH |
4566 | */ |
4567 | *(c->nl) = 0xd; | |
4568 | c->nl = NULL; | |
4569 | ptr++; | |
4570 | } | |
4571 | } | |
4572 | b->ptr = ptr; | |
4573 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4574 | } |
4575 | ||
4576 | SSize_t | |
f62ce20a | 4577 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4578 | { |
14a5cf38 | 4579 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4580 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4581 | else { |
dcda55fc | 4582 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4583 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4584 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4585 | if (!b->buf) |
4586 | PerlIO_get_base(f); | |
4587 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4588 | return 0; | |
4589 | while (buf < ebuf) { | |
dcda55fc | 4590 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4591 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4592 | while (buf < ebuf && b->ptr < eptr) { | |
4593 | if (*buf == '\n') { | |
4594 | if ((b->ptr + 2) > eptr) { | |
4595 | /* | |
71200d45 | 4596 | * Not room for both |
14a5cf38 JH |
4597 | */ |
4598 | PerlIO_flush(f); | |
4599 | break; | |
4600 | } | |
4601 | else { | |
22569500 NIS |
4602 | *(b->ptr)++ = 0xd; /* CR */ |
4603 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4604 | buf++; |
4605 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4606 | PerlIO_flush(f); | |
4607 | break; | |
4608 | } | |
4609 | } | |
4610 | } | |
4611 | else { | |
dcda55fc | 4612 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4613 | } |
4614 | if (b->ptr >= eptr) { | |
4615 | PerlIO_flush(f); | |
4616 | break; | |
4617 | } | |
4618 | } | |
4619 | } | |
4620 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4621 | PerlIO_flush(f); | |
4622 | return (buf - (STDCHAR *) vbuf); | |
4623 | } | |
99efab12 NIS |
4624 | } |
4625 | ||
4626 | IV | |
f62ce20a | 4627 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4628 | { |
dcda55fc | 4629 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4630 | if (c->nl) { |
4631 | *(c->nl) = 0xd; | |
4632 | c->nl = NULL; | |
4633 | } | |
f62ce20a | 4634 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4635 | } |
4636 | ||
86e05cf2 NIS |
4637 | IV |
4638 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4639 | { | |
4640 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4641 | /* In text mode - flush any pending stuff and flip it */ | |
4642 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4643 | #ifndef PERLIO_USING_CRLF | |
4644 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4645 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4646 | #endif |
4647 | } | |
4648 | return 0; | |
4649 | } | |
4650 | ||
27da23d5 | 4651 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4652 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4653 | "crlf", |
4654 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4655 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4656 | PerlIOCrlf_pushed, |
44798d05 | 4657 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4658 | PerlIOBuf_open, |
86e05cf2 | 4659 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4660 | NULL, |
4661 | PerlIOBase_fileno, | |
71200d45 | 4662 | PerlIOBuf_dup, |
de009b76 | 4663 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4664 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4665 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4666 | PerlIOBuf_seek, |
4667 | PerlIOBuf_tell, | |
4668 | PerlIOBuf_close, | |
4669 | PerlIOCrlf_flush, | |
4670 | PerlIOBuf_fill, | |
4671 | PerlIOBase_eof, | |
4672 | PerlIOBase_error, | |
4673 | PerlIOBase_clearerr, | |
4674 | PerlIOBase_setlinebuf, | |
4675 | PerlIOBuf_get_base, | |
4676 | PerlIOBuf_bufsiz, | |
4677 | PerlIOBuf_get_ptr, | |
4678 | PerlIOCrlf_get_cnt, | |
4679 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4680 | }; |
4681 | ||
06da4f11 NIS |
4682 | #ifdef HAS_MMAP |
4683 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4684 | /* |
71200d45 | 4685 | * mmap as "buffer" layer |
14a5cf38 | 4686 | */ |
06da4f11 | 4687 | |
14a5cf38 | 4688 | typedef struct { |
22569500 NIS |
4689 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4690 | Mmap_t mptr; /* Mapped address */ | |
4691 | Size_t len; /* mapped length */ | |
4692 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4693 | } PerlIOMmap; |
4694 | ||
4695 | IV | |
f62ce20a | 4696 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4697 | { |
27da23d5 | 4698 | dVAR; |
de009b76 AL |
4699 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4700 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4701 | IV code = 0; |
4702 | if (m->len) | |
4703 | abort(); | |
4704 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4705 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4706 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4707 | Stat_t st; |
4708 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4709 | if (code == 0 && S_ISREG(st.st_mode)) { |
4710 | SSize_t len = st.st_size - b->posn; | |
4711 | if (len > 0) { | |
4712 | Off_t posn; | |
27da23d5 JH |
4713 | if (PL_mmap_page_size <= 0) |
4714 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4715 | PL_mmap_page_size); | |
14a5cf38 JH |
4716 | if (b->posn < 0) { |
4717 | /* | |
4718 | * This is a hack - should never happen - open should | |
71200d45 | 4719 | * have set it ! |
14a5cf38 JH |
4720 | */ |
4721 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4722 | } | |
27da23d5 | 4723 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 | 4724 | len = st.st_size - posn; |
b91fbb93 | 4725 | m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
14a5cf38 | 4726 | if (m->mptr && m->mptr != (Mmap_t) - 1) { |
a5262162 | 4727 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4728 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4729 | #endif |
a5262162 | 4730 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4731 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4732 | #endif |
14a5cf38 JH |
4733 | PerlIOBase(f)->flags = |
4734 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4735 | b->end = ((STDCHAR *) m->mptr) + len; | |
4736 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4737 | b->ptr = b->buf; | |
4738 | m->len = len; | |
4739 | } | |
4740 | else { | |
4741 | b->buf = NULL; | |
4742 | } | |
4743 | } | |
4744 | else { | |
4745 | PerlIOBase(f)->flags = | |
4746 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4747 | b->buf = NULL; | |
4748 | b->ptr = b->end = b->ptr; | |
4749 | code = -1; | |
4750 | } | |
4751 | } | |
4752 | } | |
4753 | return code; | |
06da4f11 NIS |
4754 | } |
4755 | ||
4756 | IV | |
e87a358a | 4757 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4758 | { |
dcda55fc | 4759 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4760 | IV code = 0; |
4761 | if (m->len) { | |
dcda55fc | 4762 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4763 | if (b->buf) { |
1ccb7c8d JH |
4764 | /* The munmap address argument is tricky: depending on the |
4765 | * standard it is either "void *" or "caddr_t" (which is | |
4766 | * usually "char *" (signed or unsigned). If we cast it | |
4767 | * to "void *", those that have it caddr_t and an uptight | |
4768 | * C++ compiler, will freak out. But casting it as char* | |
4769 | * should work. Maybe. (Using Mmap_t figured out by | |
4770 | * Configure doesn't always work, apparently.) */ | |
4771 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4772 | b->buf = NULL; |
4773 | m->len = 0; | |
4774 | m->mptr = NULL; | |
4775 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4776 | code = -1; | |
4777 | } | |
4778 | b->ptr = b->end = b->buf; | |
4779 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4780 | } | |
4781 | return code; | |
06da4f11 NIS |
4782 | } |
4783 | ||
4784 | STDCHAR * | |
f62ce20a | 4785 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4786 | { |
dcda55fc AL |
4787 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4788 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4789 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4790 | /* | |
71200d45 | 4791 | * Already have a readbuffer in progress |
14a5cf38 JH |
4792 | */ |
4793 | return b->buf; | |
4794 | } | |
4795 | if (b->buf) { | |
4796 | /* | |
71200d45 | 4797 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4798 | */ |
22569500 NIS |
4799 | m->bbuf = b->buf; /* save it in case we need it again */ |
4800 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4801 | } |
4802 | if (!b->buf) { | |
22569500 | 4803 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4804 | if (!b->buf) { |
4805 | /* | |
71200d45 | 4806 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4807 | */ |
4808 | b->buf = m->bbuf; | |
4809 | } | |
4810 | } | |
4811 | b->ptr = b->end = b->buf; | |
4812 | if (b->buf) | |
4813 | return b->buf; | |
f62ce20a | 4814 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4815 | } |
4816 | ||
4817 | SSize_t | |
f62ce20a | 4818 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4819 | { |
dcda55fc AL |
4820 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4821 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4822 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4823 | PerlIO_flush(f); | |
4824 | if (b->ptr && (b->ptr - count) >= b->buf | |
4825 | && memEQ(b->ptr - count, vbuf, count)) { | |
4826 | b->ptr -= count; | |
4827 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4828 | return count; | |
4829 | } | |
4830 | if (m->len) { | |
4831 | /* | |
71200d45 | 4832 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4833 | */ |
4834 | PerlIO_flush(f); | |
4835 | /* | |
71200d45 | 4836 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4837 | */ |
4838 | if (!b->buf && m->bbuf) | |
4839 | b->buf = m->bbuf; | |
4840 | if (!b->buf) { | |
f62ce20a | 4841 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4842 | m->bbuf = b->buf; |
4843 | } | |
4844 | } | |
f62ce20a | 4845 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4846 | } |
4847 | ||
4848 | SSize_t | |
f62ce20a | 4849 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4850 | { |
de009b76 AL |
4851 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4852 | PerlIOBuf * const b = &m->base; | |
4853 | ||
14a5cf38 JH |
4854 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4855 | /* | |
71200d45 | 4856 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4857 | */ |
4858 | if (m->len) { | |
e87a358a | 4859 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4860 | return 0; |
4861 | } | |
4862 | /* | |
71200d45 | 4863 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4864 | */ |
4865 | if (!b->buf && m->bbuf) | |
4866 | b->buf = m->bbuf; | |
4867 | if (!b->buf) { | |
f62ce20a | 4868 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4869 | m->bbuf = b->buf; |
4870 | } | |
06da4f11 | 4871 | } |
f62ce20a | 4872 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4873 | } |
4874 | ||
4875 | IV | |
f62ce20a | 4876 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4877 | { |
dcda55fc AL |
4878 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4879 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4880 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4881 | /* |
71200d45 | 4882 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4883 | */ |
4884 | if (b->buf) { | |
4885 | if (m->len) { | |
4886 | /* | |
71200d45 | 4887 | * Unmap the buffer |
14a5cf38 | 4888 | */ |
e87a358a | 4889 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4890 | code = -1; |
4891 | } | |
4892 | else { | |
4893 | /* | |
4894 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4895 | * remember it in case we need one later |
14a5cf38 JH |
4896 | */ |
4897 | m->bbuf = b->buf; | |
4898 | } | |
4899 | } | |
4900 | return code; | |
06da4f11 NIS |
4901 | } |
4902 | ||
4903 | IV | |
f62ce20a | 4904 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4905 | { |
dcda55fc | 4906 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4907 | IV code = PerlIO_flush(f); |
4908 | if (code == 0 && !b->buf) { | |
f62ce20a | 4909 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4910 | } |
4911 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4912 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4913 | } |
4914 | return code; | |
06da4f11 NIS |
4915 | } |
4916 | ||
4917 | IV | |
f62ce20a | 4918 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4919 | { |
dcda55fc AL |
4920 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4921 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4922 | IV code = PerlIO_flush(f); |
4923 | if (m->bbuf) { | |
4924 | b->buf = m->bbuf; | |
4925 | m->bbuf = NULL; | |
4926 | b->ptr = b->end = b->buf; | |
4927 | } | |
f62ce20a | 4928 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4929 | code = -1; |
4930 | return code; | |
06da4f11 NIS |
4931 | } |
4932 | ||
71200d45 | 4933 | PerlIO * |
ecdeb87c | 4934 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4935 | { |
ecdeb87c | 4936 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4937 | } |
4938 | ||
06da4f11 | 4939 | |
27da23d5 | 4940 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4941 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4942 | "mmap", |
4943 | sizeof(PerlIOMmap), | |
86e05cf2 | 4944 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4945 | PerlIOBuf_pushed, |
44798d05 | 4946 | PerlIOBuf_popped, |
14a5cf38 | 4947 | PerlIOBuf_open, |
86e05cf2 | 4948 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4949 | NULL, |
4950 | PerlIOBase_fileno, | |
71200d45 | 4951 | PerlIOMmap_dup, |
14a5cf38 JH |
4952 | PerlIOBuf_read, |
4953 | PerlIOMmap_unread, | |
4954 | PerlIOMmap_write, | |
4955 | PerlIOBuf_seek, | |
4956 | PerlIOBuf_tell, | |
4957 | PerlIOBuf_close, | |
4958 | PerlIOMmap_flush, | |
4959 | PerlIOMmap_fill, | |
4960 | PerlIOBase_eof, | |
4961 | PerlIOBase_error, | |
4962 | PerlIOBase_clearerr, | |
4963 | PerlIOBase_setlinebuf, | |
4964 | PerlIOMmap_get_base, | |
4965 | PerlIOBuf_bufsiz, | |
4966 | PerlIOBuf_get_ptr, | |
4967 | PerlIOBuf_get_cnt, | |
4968 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4969 | }; |
4970 | ||
22569500 | 4971 | #endif /* HAS_MMAP */ |
06da4f11 | 4972 | |
9e353e3b | 4973 | PerlIO * |
e87a358a | 4974 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4975 | { |
97aff369 | 4976 | dVAR; |
a1ea730d | 4977 | if (!PL_perlio) { |
14a5cf38 JH |
4978 | PerlIO_stdstreams(aTHX); |
4979 | } | |
a1ea730d | 4980 | return &PL_perlio[1]; |
9e353e3b NIS |
4981 | } |
4982 | ||
9e353e3b | 4983 | PerlIO * |
e87a358a | 4984 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4985 | { |
97aff369 | 4986 | dVAR; |
a1ea730d | 4987 | if (!PL_perlio) { |
14a5cf38 JH |
4988 | PerlIO_stdstreams(aTHX); |
4989 | } | |
a1ea730d | 4990 | return &PL_perlio[2]; |
9e353e3b NIS |
4991 | } |
4992 | ||
9e353e3b | 4993 | PerlIO * |
e87a358a | 4994 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4995 | { |
97aff369 | 4996 | dVAR; |
a1ea730d | 4997 | if (!PL_perlio) { |
14a5cf38 JH |
4998 | PerlIO_stdstreams(aTHX); |
4999 | } | |
a1ea730d | 5000 | return &PL_perlio[3]; |
9e353e3b NIS |
5001 | } |
5002 | ||
5003 | /*--------------------------------------------------------------------------------------*/ | |
5004 | ||
9e353e3b NIS |
5005 | char * |
5006 | PerlIO_getname(PerlIO *f, char *buf) | |
5007 | { | |
14a5cf38 | 5008 | dTHX; |
a15cef0c | 5009 | #ifdef VMS |
73d840c0 | 5010 | char *name = NULL; |
7659f319 | 5011 | bool exported = FALSE; |
14a5cf38 | 5012 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
5013 | if (!stdio) { |
5014 | stdio = PerlIO_exportFILE(f,0); | |
5015 | exported = TRUE; | |
5016 | } | |
5017 | if (stdio) { | |
14a5cf38 | 5018 | name = fgetname(stdio, buf); |
7659f319 CB |
5019 | if (exported) PerlIO_releaseFILE(f,stdio); |
5020 | } | |
73d840c0 | 5021 | return name; |
a15cef0c | 5022 | #else |
8772537c AL |
5023 | PERL_UNUSED_ARG(f); |
5024 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 5025 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 5026 | return NULL; |
a15cef0c | 5027 | #endif |
9e353e3b NIS |
5028 | } |
5029 | ||
5030 | ||
5031 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
5032 | /* |
5033 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 5034 | * terms of above |
14a5cf38 | 5035 | */ |
9e353e3b | 5036 | |
e87a358a NIS |
5037 | #undef PerlIO_fdopen |
5038 | PerlIO * | |
5039 | PerlIO_fdopen(int fd, const char *mode) | |
5040 | { | |
5041 | dTHX; | |
bd61b366 | 5042 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
5043 | } |
5044 | ||
5045 | #undef PerlIO_open | |
5046 | PerlIO * | |
5047 | PerlIO_open(const char *path, const char *mode) | |
5048 | { | |
5049 | dTHX; | |
42d9b98d | 5050 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 5051 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
5052 | } |
5053 | ||
5054 | #undef Perlio_reopen | |
5055 | PerlIO * | |
5056 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
5057 | { | |
5058 | dTHX; | |
42d9b98d | 5059 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 5060 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
5061 | } |
5062 | ||
9e353e3b | 5063 | #undef PerlIO_getc |
6f9d8c32 | 5064 | int |
9e353e3b | 5065 | PerlIO_getc(PerlIO *f) |
760ac839 | 5066 | { |
e87a358a | 5067 | dTHX; |
14a5cf38 | 5068 | STDCHAR buf[1]; |
de009b76 | 5069 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
5070 | return (unsigned char) buf[0]; |
5071 | } | |
5072 | return EOF; | |
313ca112 NIS |
5073 | } |
5074 | ||
5075 | #undef PerlIO_ungetc | |
5076 | int | |
5077 | PerlIO_ungetc(PerlIO *f, int ch) | |
5078 | { | |
e87a358a | 5079 | dTHX; |
14a5cf38 JH |
5080 | if (ch != EOF) { |
5081 | STDCHAR buf = ch; | |
5082 | if (PerlIO_unread(f, &buf, 1) == 1) | |
5083 | return ch; | |
5084 | } | |
5085 | return EOF; | |
760ac839 LW |
5086 | } |
5087 | ||
9e353e3b NIS |
5088 | #undef PerlIO_putc |
5089 | int | |
5090 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 5091 | { |
e87a358a | 5092 | dTHX; |
14a5cf38 JH |
5093 | STDCHAR buf = ch; |
5094 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5095 | } |
5096 | ||
9e353e3b | 5097 | #undef PerlIO_puts |
760ac839 | 5098 | int |
9e353e3b | 5099 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5100 | { |
e87a358a | 5101 | dTHX; |
dcda55fc | 5102 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5103 | } |
5104 | ||
5105 | #undef PerlIO_rewind | |
5106 | void | |
c78749f2 | 5107 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5108 | { |
e87a358a | 5109 | dTHX; |
14a5cf38 JH |
5110 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5111 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5112 | } |
5113 | ||
5114 | #undef PerlIO_vprintf | |
5115 | int | |
5116 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5117 | { | |
14a5cf38 | 5118 | dTHX; |
53ce71d3 | 5119 | SV * sv; |
b83604b4 | 5120 | const char *s; |
14a5cf38 JH |
5121 | STRLEN len; |
5122 | SSize_t wrote; | |
2cc61e15 | 5123 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5124 | va_list apc; |
5125 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5126 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 5127 | #else |
53ce71d3 | 5128 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5129 | #endif |
b83604b4 | 5130 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5131 | wrote = PerlIO_write(f, s, len); |
5132 | SvREFCNT_dec(sv); | |
5133 | return wrote; | |
760ac839 LW |
5134 | } |
5135 | ||
5136 | #undef PerlIO_printf | |
6f9d8c32 | 5137 | int |
14a5cf38 | 5138 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5139 | { |
14a5cf38 JH |
5140 | va_list ap; |
5141 | int result; | |
5142 | va_start(ap, fmt); | |
5143 | result = PerlIO_vprintf(f, fmt, ap); | |
5144 | va_end(ap); | |
5145 | return result; | |
760ac839 LW |
5146 | } |
5147 | ||
5148 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5149 | int |
14a5cf38 | 5150 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5151 | { |
e87a358a | 5152 | dTHX; |
14a5cf38 JH |
5153 | va_list ap; |
5154 | int result; | |
5155 | va_start(ap, fmt); | |
5156 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5157 | va_end(ap); | |
5158 | return result; | |
760ac839 LW |
5159 | } |
5160 | ||
5161 | #undef PerlIO_tmpfile | |
5162 | PerlIO * | |
c78749f2 | 5163 | PerlIO_tmpfile(void) |
760ac839 | 5164 | { |
2941a2e1 JH |
5165 | dTHX; |
5166 | PerlIO *f = NULL; | |
2941a2e1 | 5167 | #ifdef WIN32 |
de009b76 | 5168 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5169 | if (fd >= 0) |
5170 | f = PerlIO_fdopen(fd, "w+b"); | |
5171 | #else /* WIN32 */ | |
460c8493 | 5172 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
396482e1 | 5173 | SV * const sv = newSVpvs("/tmp/PerlIO_XXXXXX"); |
2941a2e1 JH |
5174 | /* |
5175 | * I have no idea how portable mkstemp() is ... NI-S | |
5176 | */ | |
de009b76 | 5177 | const int fd = mkstemp(SvPVX(sv)); |
2941a2e1 JH |
5178 | if (fd >= 0) { |
5179 | f = PerlIO_fdopen(fd, "w+"); | |
5180 | if (f) | |
5181 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
b15aece3 | 5182 | PerlLIO_unlink(SvPVX_const(sv)); |
2941a2e1 | 5183 | } |
b2166d27 | 5184 | SvREFCNT_dec(sv); |
2941a2e1 | 5185 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5186 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5187 | |
085e731f CB |
5188 | if (stdio) |
5189 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5190 | ||
2941a2e1 JH |
5191 | # endif /* else HAS_MKSTEMP */ |
5192 | #endif /* else WIN32 */ | |
5193 | return f; | |
760ac839 LW |
5194 | } |
5195 | ||
6f9d8c32 NIS |
5196 | #undef HAS_FSETPOS |
5197 | #undef HAS_FGETPOS | |
5198 | ||
22569500 NIS |
5199 | #endif /* USE_SFIO */ |
5200 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5201 | |
9e353e3b | 5202 | /*======================================================================================*/ |
14a5cf38 | 5203 | /* |
71200d45 NIS |
5204 | * Now some functions in terms of above which may be needed even if we are |
5205 | * not in true PerlIO mode | |
9e353e3b | 5206 | */ |
188f0c84 YO |
5207 | const char * |
5208 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5209 | { | |
5210 | dVAR; | |
8b850bd5 NC |
5211 | const char *direction = NULL; |
5212 | SV *layers; | |
188f0c84 YO |
5213 | /* |
5214 | * Need to supply default layer info from open.pm | |
5215 | */ | |
8b850bd5 NC |
5216 | |
5217 | if (!PL_curcop) | |
5218 | return NULL; | |
5219 | ||
5220 | if (mode && mode[0] != 'r') { | |
5221 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5222 | direction = "open>"; | |
5223 | } else { | |
5224 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5225 | direction = "open<"; | |
188f0c84 | 5226 | } |
8b850bd5 NC |
5227 | if (!direction) |
5228 | return NULL; | |
5229 | ||
5230 | layers = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, | |
5231 | 0, direction, 5, 0, 0); | |
5232 | ||
5233 | assert(layers); | |
5234 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5235 | } |
5236 | ||
9e353e3b | 5237 | |
760ac839 LW |
5238 | #ifndef HAS_FSETPOS |
5239 | #undef PerlIO_setpos | |
5240 | int | |
766a733e | 5241 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5242 | { |
14a5cf38 JH |
5243 | dTHX; |
5244 | if (SvOK(pos)) { | |
5245 | STRLEN len; | |
c4420975 | 5246 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5247 | if (f && len == sizeof(Off_t)) |
5248 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5249 | } | |
93189314 | 5250 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5251 | return -1; |
760ac839 | 5252 | } |
c411622e | 5253 | #else |
c411622e | 5254 | #undef PerlIO_setpos |
5255 | int | |
766a733e | 5256 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5257 | { |
14a5cf38 JH |
5258 | dTHX; |
5259 | if (SvOK(pos)) { | |
5260 | STRLEN len; | |
c4420975 | 5261 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5262 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5263 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5264 | return fsetpos64(f, fpos); |
d9b3e12d | 5265 | #else |
14a5cf38 | 5266 | return fsetpos(f, fpos); |
d9b3e12d | 5267 | #endif |
14a5cf38 | 5268 | } |
766a733e | 5269 | } |
93189314 | 5270 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5271 | return -1; |
c411622e | 5272 | } |
5273 | #endif | |
760ac839 LW |
5274 | |
5275 | #ifndef HAS_FGETPOS | |
5276 | #undef PerlIO_getpos | |
5277 | int | |
766a733e | 5278 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5279 | { |
14a5cf38 JH |
5280 | dTHX; |
5281 | Off_t posn = PerlIO_tell(f); | |
5282 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5283 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5284 | } |
c411622e | 5285 | #else |
c411622e | 5286 | #undef PerlIO_getpos |
5287 | int | |
766a733e | 5288 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5289 | { |
14a5cf38 JH |
5290 | dTHX; |
5291 | Fpos_t fpos; | |
5292 | int code; | |
2d4389e4 | 5293 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5294 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5295 | #else |
14a5cf38 | 5296 | code = fgetpos(f, &fpos); |
d9b3e12d | 5297 | #endif |
14a5cf38 JH |
5298 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5299 | return code; | |
c411622e | 5300 | } |
5301 | #endif | |
760ac839 LW |
5302 | |
5303 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5304 | ||
5305 | int | |
c78749f2 | 5306 | vprintf(char *pat, char *args) |
662a7e3f CS |
5307 | { |
5308 | _doprnt(pat, args, stdout); | |
22569500 | 5309 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5310 | * value */ |
662a7e3f CS |
5311 | } |
5312 | ||
5313 | int | |
c78749f2 | 5314 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5315 | { |
5316 | _doprnt(pat, args, fd); | |
22569500 | 5317 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5318 | * value */ |
760ac839 LW |
5319 | } |
5320 | ||
5321 | #endif | |
5322 | ||
5323 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5324 | int |
8ac85365 | 5325 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5326 | { |
8ff9a42b | 5327 | dTHX; |
d9fad198 | 5328 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5329 | PERL_UNUSED_CONTEXT; |
5330 | ||
1208b3dd JH |
5331 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5332 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5333 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5334 | } |
1208b3dd | 5335 | #endif |
14a5cf38 | 5336 | return val; |
760ac839 LW |
5337 | } |
5338 | #endif | |
5339 | ||
5340 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5341 | int |
14a5cf38 | 5342 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5343 | { |
14a5cf38 JH |
5344 | va_list ap; |
5345 | int result; | |
5346 | va_start(ap, fmt); | |
5347 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5348 | va_end(ap); | |
5349 | return result; | |
760ac839 LW |
5350 | } |
5351 | #endif | |
9cfa90c0 NC |
5352 | |
5353 | /* | |
5354 | * Local variables: | |
5355 | * c-indentation-style: bsd | |
5356 | * c-basic-offset: 4 | |
5357 | * indent-tabs-mode: t | |
5358 | * End: | |
5359 | * | |
37442d52 RGS |
5360 | * ex: set ts=8 sts=4 sw=4 noet: |
5361 | */ |