Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
5cb43542 RGS |
2 | * perlio.c |
3 | * Copyright (c) 1996-2006, Nick Ing-Simmons | |
1129b882 | 4 | * Copyright (c) 2006, 2007, 2008 Larry Wall and others |
5cb43542 RGS |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public License | |
7 | * or the Artistic License, as specified in the README file. | |
760ac839 LW |
8 | */ |
9 | ||
14a5cf38 | 10 | /* |
d31a8517 AT |
11 | * Hour after hour for nearly three weary days he had jogged up and down, |
12 | * over passes, and through long dales, and across many streams. | |
4ac71550 TC |
13 | * |
14 | * [pp.791-792 of _The Lord of the Rings_, V/iii: "The Muster of Rohan"] | |
d31a8517 AT |
15 | */ |
16 | ||
166f8a29 DM |
17 | /* This file contains the functions needed to implement PerlIO, which |
18 | * is Perl's private replacement for the C stdio library. This is used | |
19 | * by default unless you compile with -Uuseperlio or run with | |
20 | * PERLIO=:stdio (but don't do this unless you know what you're doing) | |
21 | */ | |
22 | ||
d31a8517 | 23 | /* |
71200d45 | 24 | * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get |
14a5cf38 | 25 | * at the dispatch tables, even when we do not need it for other reasons. |
71200d45 | 26 | * Invent a dSYS macro to abstract this out |
14a5cf38 | 27 | */ |
7bcba3d4 NIS |
28 | #ifdef PERL_IMPLICIT_SYS |
29 | #define dSYS dTHX | |
30 | #else | |
31 | #define dSYS dNOOP | |
32 | #endif | |
33 | ||
760ac839 | 34 | #define VOIDUSED 1 |
12ae5dfc JH |
35 | #ifdef PERL_MICRO |
36 | # include "uconfig.h" | |
37 | #else | |
b0f06652 VK |
38 | # ifndef USE_CROSS_COMPILE |
39 | # include "config.h" | |
40 | # else | |
41 | # include "xconfig.h" | |
42 | # endif | |
12ae5dfc | 43 | #endif |
760ac839 | 44 | |
6f9d8c32 | 45 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 46 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
14a5cf38 | 47 | /* |
71200d45 | 48 | * #define PerlIO FILE |
14a5cf38 | 49 | */ |
760ac839 LW |
50 | #endif |
51 | /* | |
6f9d8c32 | 52 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 53 | * which are not #defined in perlio.h. |
6f9d8c32 | 54 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
55 | */ |
56 | ||
57 | #include "EXTERN.h" | |
864dbfa3 | 58 | #define PERL_IN_PERLIO_C |
760ac839 LW |
59 | #include "perl.h" |
60 | ||
32af7c23 CL |
61 | #ifdef PERL_IMPLICIT_CONTEXT |
62 | #undef dSYS | |
63 | #define dSYS dTHX | |
64 | #endif | |
65 | ||
0c4f7ff0 NIS |
66 | #include "XSUB.h" |
67 | ||
9cffb111 OS |
68 | #ifdef __Lynx__ |
69 | /* Missing proto on LynxOS */ | |
70 | int mkstemp(char*); | |
71 | #endif | |
72 | ||
1b7a0411 | 73 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 74 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 75 | if (PerlIOValid(f)) { \ |
46c461b5 | 76 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
77 | if (tab && tab->callback) \ |
78 | return (*tab->callback) args; \ | |
79 | else \ | |
80 | return PerlIOBase_ ## base args; \ | |
81 | } \ | |
82 | else \ | |
83 | SETERRNO(EBADF, SS_IVCHAN); \ | |
84 | return failure | |
85 | ||
86 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 87 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 88 | if (PerlIOValid(f)) { \ |
46c461b5 | 89 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
90 | if (tab && tab->callback) \ |
91 | return (*tab->callback) args; \ | |
92 | SETERRNO(EINVAL, LIB_INVARG); \ | |
93 | } \ | |
94 | else \ | |
95 | SETERRNO(EBADF, SS_IVCHAN); \ | |
96 | return failure | |
97 | ||
98 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 99 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 100 | if (PerlIOValid(f)) { \ |
46c461b5 | 101 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
102 | if (tab && tab->callback) \ |
103 | (*tab->callback) args; \ | |
104 | else \ | |
105 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
106 | } \ |
107 | else \ | |
108 | SETERRNO(EBADF, SS_IVCHAN) | |
109 | ||
110 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 111 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 112 | if (PerlIOValid(f)) { \ |
46c461b5 | 113 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
114 | if (tab && tab->callback) \ |
115 | (*tab->callback) args; \ | |
37725cdc NIS |
116 | else \ |
117 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
118 | } \ |
119 | else \ | |
120 | SETERRNO(EBADF, SS_IVCHAN) | |
121 | ||
89a3a251 JH |
122 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
123 | extern int fseeko(FILE *, off_t, int); | |
124 | extern off_t ftello(FILE *); | |
125 | #endif | |
126 | ||
71ab4674 | 127 | #ifndef USE_SFIO |
a0c21aa1 JH |
128 | |
129 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); | |
130 | ||
71ab4674 SP |
131 | int |
132 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
133 | { | |
134 | /* | |
135 | * This used to be contents of do_binmode in doio.c | |
136 | */ | |
137 | #ifdef DOSISH | |
cd86ed9d | 138 | # if defined(atarist) |
58c0efa5 | 139 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
140 | if (!fflush(fp)) { |
141 | if (mode & O_BINARY) | |
142 | ((FILE *) fp)->_flag |= _IOBIN; | |
143 | else | |
144 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
145 | return 1; | |
146 | } | |
147 | return 0; | |
148 | # else | |
149 | dTHX; | |
58c0efa5 | 150 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
151 | #ifdef NETWARE |
152 | if (PerlLIO_setmode(fp, mode) != -1) { | |
153 | #else | |
154 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
155 | #endif | |
156 | # if defined(WIN32) && defined(__BORLANDC__) | |
157 | /* | |
158 | * The translation mode of the stream is maintained independent | |
159 | of | |
160 | * the translation mode of the fd in the Borland RTL (heavy | |
161 | * digging through their runtime sources reveal). User has to | |
162 | set | |
163 | * the mode explicitly for the stream (though they don't | |
164 | document | |
165 | * this anywhere). GSAR 97-5-24 | |
166 | */ | |
167 | fseek(fp, 0L, 0); | |
168 | if (mode & O_BINARY) | |
169 | fp->flags |= _F_BIN; | |
170 | else | |
171 | fp->flags &= ~_F_BIN; | |
172 | # endif | |
173 | return 1; | |
174 | } | |
175 | else | |
176 | return 0; | |
177 | # endif | |
178 | #else | |
179 | # if defined(USEMYBINMODE) | |
180 | dTHX; | |
58c0efa5 RGS |
181 | # if defined(__CYGWIN__) |
182 | PERL_UNUSED_ARG(iotype); | |
183 | # endif | |
71ab4674 SP |
184 | if (my_binmode(fp, iotype, mode) != FALSE) |
185 | return 1; | |
186 | else | |
187 | return 0; | |
188 | # else | |
189 | PERL_UNUSED_ARG(fp); | |
190 | PERL_UNUSED_ARG(iotype); | |
191 | PERL_UNUSED_ARG(mode); | |
192 | return 1; | |
193 | # endif | |
194 | #endif | |
195 | } | |
196 | #endif /* sfio */ | |
197 | ||
06c7082d | 198 | #ifndef O_ACCMODE |
22569500 | 199 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
200 | #endif |
201 | ||
202 | int | |
203 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
204 | { | |
de009b76 | 205 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
206 | int ix = 0; |
207 | int ptype; | |
208 | switch (result) { | |
209 | case O_RDONLY: | |
210 | ptype = IoTYPE_RDONLY; | |
211 | break; | |
212 | case O_WRONLY: | |
213 | ptype = IoTYPE_WRONLY; | |
214 | break; | |
215 | case O_RDWR: | |
216 | default: | |
217 | ptype = IoTYPE_RDWR; | |
218 | break; | |
219 | } | |
220 | if (writing) | |
221 | *writing = (result != O_RDONLY); | |
222 | ||
223 | if (result == O_RDONLY) { | |
224 | mode[ix++] = 'r'; | |
225 | } | |
226 | #ifdef O_APPEND | |
227 | else if (rawmode & O_APPEND) { | |
228 | mode[ix++] = 'a'; | |
229 | if (result != O_WRONLY) | |
230 | mode[ix++] = '+'; | |
231 | } | |
232 | #endif | |
233 | else { | |
234 | if (result == O_WRONLY) | |
235 | mode[ix++] = 'w'; | |
236 | else { | |
237 | mode[ix++] = 'r'; | |
238 | mode[ix++] = '+'; | |
239 | } | |
240 | } | |
241 | if (rawmode & O_BINARY) | |
242 | mode[ix++] = 'b'; | |
243 | mode[ix] = '\0'; | |
244 | return ptype; | |
245 | } | |
246 | ||
eb73beca NIS |
247 | #ifndef PERLIO_LAYERS |
248 | int | |
249 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
250 | { | |
6874a2de NIS |
251 | if (!names || !*names |
252 | || strEQ(names, ":crlf") | |
253 | || strEQ(names, ":raw") | |
254 | || strEQ(names, ":bytes") | |
255 | ) { | |
14a5cf38 JH |
256 | return 0; |
257 | } | |
258 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
259 | /* | |
71200d45 | 260 | * NOTREACHED |
14a5cf38 JH |
261 | */ |
262 | return -1; | |
eb73beca NIS |
263 | } |
264 | ||
13621cfb NIS |
265 | void |
266 | PerlIO_destruct(pTHX) | |
267 | { | |
268 | } | |
269 | ||
f5b9d040 NIS |
270 | int |
271 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
272 | { | |
92bff44d | 273 | #ifdef USE_SFIO |
8772537c AL |
274 | PERL_UNUSED_ARG(iotype); |
275 | PERL_UNUSED_ARG(mode); | |
276 | PERL_UNUSED_ARG(names); | |
14a5cf38 | 277 | return 1; |
92bff44d | 278 | #else |
14a5cf38 | 279 | return perlsio_binmode(fp, iotype, mode); |
92bff44d | 280 | #endif |
f5b9d040 | 281 | } |
60382766 | 282 | |
e0fa5af2 | 283 | PerlIO * |
ecdeb87c | 284 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 285 | { |
a0fd4948 | 286 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
287 | return NULL; |
288 | #else | |
289 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 290 | return PerlSIO_fdupopen(f); |
0553478e | 291 | #else |
30753f56 NIS |
292 | #ifdef WIN32 |
293 | return win32_fdupopen(f); | |
294 | #else | |
e0fa5af2 | 295 | if (f) { |
504618e9 | 296 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 297 | if (fd >= 0) { |
06c7082d | 298 | char mode[8]; |
a5936e02 | 299 | #ifdef DJGPP |
dcda55fc AL |
300 | const int omode = djgpp_get_stream_mode(f); |
301 | #else | |
302 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 303 | #endif |
06c7082d | 304 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 305 | /* the r+ is a hack */ |
06c7082d | 306 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
307 | } |
308 | return NULL; | |
309 | } | |
310 | else { | |
93189314 | 311 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 312 | } |
7114a2d2 | 313 | #endif |
e0fa5af2 | 314 | return NULL; |
0553478e | 315 | #endif |
30753f56 | 316 | #endif |
e0fa5af2 NIS |
317 | } |
318 | ||
319 | ||
14a5cf38 | 320 | /* |
71200d45 | 321 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 322 | */ |
ee518936 NIS |
323 | |
324 | PerlIO * | |
14a5cf38 JH |
325 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
326 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
327 | { | |
7cf31beb NIS |
328 | if (narg) { |
329 | if (narg > 1) { | |
3b8752bb | 330 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 331 | } |
14a5cf38 JH |
332 | if (*args == &PL_sv_undef) |
333 | return PerlIO_tmpfile(); | |
334 | else { | |
e62f0680 | 335 | const char *name = SvPV_nolen_const(*args); |
3b6c1aba | 336 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
337 | fd = PerlLIO_open3(name, imode, perm); |
338 | if (fd >= 0) | |
de009b76 | 339 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
340 | } |
341 | else if (old) { | |
342 | return PerlIO_reopen(name, mode, old); | |
343 | } | |
344 | else { | |
345 | return PerlIO_open(name, mode); | |
346 | } | |
347 | } | |
348 | } | |
349 | else { | |
350 | return PerlIO_fdopen(fd, (char *) mode); | |
351 | } | |
352 | return NULL; | |
ee518936 NIS |
353 | } |
354 | ||
0c4f7ff0 NIS |
355 | XS(XS_PerlIO__Layer__find) |
356 | { | |
14a5cf38 JH |
357 | dXSARGS; |
358 | if (items < 2) | |
359 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
360 | else { | |
dcda55fc | 361 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
362 | ST(0) = (strEQ(name, "crlf") |
363 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
364 | XSRETURN(1); | |
365 | } | |
0c4f7ff0 NIS |
366 | } |
367 | ||
368 | ||
369 | void | |
370 | Perl_boot_core_PerlIO(pTHX) | |
371 | { | |
14a5cf38 | 372 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
373 | } |
374 | ||
ac27b0f5 NIS |
375 | #endif |
376 | ||
32e30700 | 377 | |
6f9d8c32 | 378 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
379 | |
380 | void | |
e8632036 | 381 | PerlIO_init(pTHX) |
760ac839 | 382 | { |
96a5add6 | 383 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
384 | /* |
385 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 386 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 387 | * that may be required by loadable extensions e.g. for |
71200d45 | 388 | * FileHandle::tmpfile |
14a5cf38 | 389 | */ |
760ac839 LW |
390 | } |
391 | ||
33dcbb9a | 392 | #undef PerlIO_tmpfile |
393 | PerlIO * | |
8ac85365 | 394 | PerlIO_tmpfile(void) |
33dcbb9a | 395 | { |
14a5cf38 | 396 | return tmpfile(); |
33dcbb9a | 397 | } |
398 | ||
22569500 | 399 | #else /* PERLIO_IS_STDIO */ |
760ac839 LW |
400 | |
401 | #ifdef USE_SFIO | |
402 | ||
403 | #undef HAS_FSETPOS | |
404 | #undef HAS_FGETPOS | |
405 | ||
14a5cf38 JH |
406 | /* |
407 | * This section is just to make sure these functions get pulled in from | |
71200d45 | 408 | * libsfio.a |
14a5cf38 | 409 | */ |
760ac839 LW |
410 | |
411 | #undef PerlIO_tmpfile | |
412 | PerlIO * | |
c78749f2 | 413 | PerlIO_tmpfile(void) |
760ac839 | 414 | { |
14a5cf38 | 415 | return sftmp(0); |
760ac839 LW |
416 | } |
417 | ||
418 | void | |
e8632036 | 419 | PerlIO_init(pTHX) |
760ac839 | 420 | { |
96a5add6 | 421 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
422 | /* |
423 | * Force this file to be included in perl binary. Which allows this | |
424 | * file to force inclusion of other functions that may be required by | |
71200d45 | 425 | * loadable extensions e.g. for FileHandle::tmpfile |
14a5cf38 | 426 | */ |
760ac839 | 427 | |
14a5cf38 | 428 | /* |
71200d45 | 429 | * Hack sfio does its own 'autoflush' on stdout in common cases. Flush |
14a5cf38 | 430 | * results in a lot of lseek()s to regular files and lot of small |
71200d45 | 431 | * writes to pipes. |
14a5cf38 JH |
432 | */ |
433 | sfset(sfstdout, SF_SHARE, 0); | |
760ac839 LW |
434 | } |
435 | ||
b9d6bf13 | 436 | /* This is not the reverse of PerlIO_exportFILE(), PerlIO_releaseFILE() is. */ |
92bff44d | 437 | PerlIO * |
4b069b44 | 438 | PerlIO_importFILE(FILE *stdio, const char *mode) |
92bff44d | 439 | { |
de009b76 | 440 | const int fd = fileno(stdio); |
4b069b44 | 441 | if (!mode || !*mode) { |
81428673 | 442 | mode = "r+"; |
4b069b44 NIS |
443 | } |
444 | return PerlIO_fdopen(fd, mode); | |
92bff44d NIS |
445 | } |
446 | ||
447 | FILE * | |
448 | PerlIO_findFILE(PerlIO *pio) | |
449 | { | |
de009b76 AL |
450 | const int fd = PerlIO_fileno(pio); |
451 | FILE * const f = fdopen(fd, "r+"); | |
14a5cf38 JH |
452 | PerlIO_flush(pio); |
453 | if (!f && errno == EINVAL) | |
454 | f = fdopen(fd, "w"); | |
455 | if (!f && errno == EINVAL) | |
456 | f = fdopen(fd, "r"); | |
457 | return f; | |
92bff44d NIS |
458 | } |
459 | ||
460 | ||
22569500 | 461 | #else /* USE_SFIO */ |
6f9d8c32 | 462 | /*======================================================================================*/ |
14a5cf38 | 463 | /* |
71200d45 | 464 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 465 | */ |
760ac839 | 466 | |
76ced9ad NIS |
467 | #include "perliol.h" |
468 | ||
14a5cf38 JH |
469 | /* |
470 | * We _MUST_ have <unistd.h> if we are using lseek() and may have large | |
71200d45 | 471 | * files |
14a5cf38 | 472 | */ |
02f66e2f NIS |
473 | #ifdef I_UNISTD |
474 | #include <unistd.h> | |
475 | #endif | |
06da4f11 NIS |
476 | #ifdef HAS_MMAP |
477 | #include <sys/mman.h> | |
478 | #endif | |
479 | ||
6f9d8c32 | 480 | void |
14a5cf38 JH |
481 | PerlIO_debug(const char *fmt, ...) |
482 | { | |
14a5cf38 JH |
483 | va_list ap; |
484 | dSYS; | |
485 | va_start(ap, fmt); | |
582588d2 NC |
486 | if (!PL_perlio_debug_fd) { |
487 | if (!PL_tainting && PL_uid == PL_euid && PL_gid == PL_egid) { | |
488 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); | |
489 | if (s && *s) | |
490 | PL_perlio_debug_fd | |
491 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
492 | else | |
493 | PL_perlio_debug_fd = -1; | |
494 | } else { | |
495 | /* tainting or set*id, so ignore the environment, and ensure we | |
496 | skip these tests next time through. */ | |
27da23d5 | 497 | PL_perlio_debug_fd = -1; |
582588d2 | 498 | } |
14a5cf38 | 499 | } |
27da23d5 | 500 | if (PL_perlio_debug_fd > 0) { |
14a5cf38 | 501 | dTHX; |
70ace5da | 502 | #ifdef USE_ITHREADS |
dcda55fc | 503 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
504 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
505 | char buffer[1024]; | |
1208b3dd JH |
506 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
507 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
508 | PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); | |
70ace5da | 509 | #else |
dcda55fc AL |
510 | const char *s = CopFILE(PL_curcop); |
511 | STRLEN len; | |
550e2ce0 NC |
512 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
513 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
514 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
515 | ||
b83604b4 | 516 | s = SvPV_const(sv, len); |
27da23d5 | 517 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 518 | SvREFCNT_dec(sv); |
70ace5da | 519 | #endif |
14a5cf38 JH |
520 | } |
521 | va_end(ap); | |
6f9d8c32 NIS |
522 | } |
523 | ||
9e353e3b NIS |
524 | /*--------------------------------------------------------------------------------------*/ |
525 | ||
14a5cf38 | 526 | /* |
71200d45 | 527 | * Inner level routines |
14a5cf38 | 528 | */ |
9e353e3b | 529 | |
16865ff7 DM |
530 | /* check that the head field of each layer points back to the head */ |
531 | ||
532 | #ifdef DEBUGGING | |
533 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
534 | static void | |
535 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
536 | { | |
537 | PerlIOl *head, *p; | |
538 | int seen = 0; | |
539 | if (!PerlIOValid(f)) | |
540 | return; | |
541 | p = head = PerlIOBase(f)->head; | |
542 | assert(p); | |
543 | do { | |
544 | assert(p->head == head); | |
545 | if (p == (PerlIOl*)f) | |
546 | seen = 1; | |
547 | p = p->next; | |
548 | } while (p); | |
549 | assert(seen); | |
550 | } | |
551 | #else | |
552 | # define VERIFY_HEAD(f) | |
553 | #endif | |
554 | ||
555 | ||
14a5cf38 | 556 | /* |
71200d45 | 557 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 558 | */ |
05d1247b | 559 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 560 | |
8995e67d DM |
561 | static void |
562 | PerlIO_init_table(pTHX) | |
563 | { | |
564 | if (PL_perlio) | |
565 | return; | |
566 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
567 | } | |
568 | ||
569 | ||
570 | ||
760ac839 | 571 | PerlIO * |
5f1a76d0 | 572 | PerlIO_allocate(pTHX) |
6f9d8c32 | 573 | { |
97aff369 | 574 | dVAR; |
14a5cf38 | 575 | /* |
71200d45 | 576 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 577 | */ |
303f2dc3 DM |
578 | PerlIOl **last; |
579 | PerlIOl *f; | |
a1ea730d | 580 | last = &PL_perlio; |
14a5cf38 JH |
581 | while ((f = *last)) { |
582 | int i; | |
303f2dc3 | 583 | last = (PerlIOl **) (f); |
14a5cf38 | 584 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
585 | if (!((++f)->next)) { |
586 | f->flags = 0; | |
587 | f->tab = NULL; | |
16865ff7 | 588 | f->head = f; |
303f2dc3 | 589 | return (PerlIO *)f; |
14a5cf38 JH |
590 | } |
591 | } | |
592 | } | |
303f2dc3 | 593 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
594 | if (!f) { |
595 | return NULL; | |
596 | } | |
303f2dc3 DM |
597 | *last = (PerlIOl*) f++; |
598 | f->flags = 0; | |
599 | f->tab = NULL; | |
16865ff7 | 600 | f->head = f; |
303f2dc3 | 601 | return (PerlIO*) f; |
05d1247b NIS |
602 | } |
603 | ||
a1ea730d NIS |
604 | #undef PerlIO_fdupopen |
605 | PerlIO * | |
ecdeb87c | 606 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 607 | { |
04892f78 | 608 | if (PerlIOValid(f)) { |
de009b76 | 609 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 610 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
611 | if (tab && tab->Dup) |
612 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
613 | else { |
614 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
615 | } | |
a1ea730d | 616 | } |
210e727c JH |
617 | else |
618 | SETERRNO(EBADF, SS_IVCHAN); | |
619 | ||
620 | return NULL; | |
a1ea730d NIS |
621 | } |
622 | ||
623 | void | |
303f2dc3 | 624 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 625 | { |
303f2dc3 | 626 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
627 | if (table) { |
628 | int i; | |
303f2dc3 | 629 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 630 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
631 | PerlIOl * const f = table + i; |
632 | if (f->next) { | |
633 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
634 | } |
635 | } | |
3a1ee7e8 | 636 | Safefree(table); |
14a5cf38 | 637 | *tablep = NULL; |
05d1247b | 638 | } |
05d1247b NIS |
639 | } |
640 | ||
fcf2db38 NIS |
641 | |
642 | PerlIO_list_t * | |
3a1ee7e8 | 643 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 644 | { |
14a5cf38 | 645 | PerlIO_list_t *list; |
96a5add6 | 646 | PERL_UNUSED_CONTEXT; |
a02a5408 | 647 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
648 | list->refcnt = 1; |
649 | return list; | |
fcf2db38 NIS |
650 | } |
651 | ||
652 | void | |
3a1ee7e8 | 653 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 654 | { |
14a5cf38 JH |
655 | if (list) { |
656 | if (--list->refcnt == 0) { | |
657 | if (list->array) { | |
14a5cf38 | 658 | IV i; |
ef8d46e8 VP |
659 | for (i = 0; i < list->cur; i++) |
660 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
661 | Safefree(list->array); |
662 | } | |
663 | Safefree(list); | |
664 | } | |
665 | } | |
fcf2db38 NIS |
666 | } |
667 | ||
668 | void | |
3a1ee7e8 | 669 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 670 | { |
97aff369 | 671 | dVAR; |
334e202e | 672 | PerlIO_pair_t *p; |
b37c2d43 AL |
673 | PERL_UNUSED_CONTEXT; |
674 | ||
14a5cf38 JH |
675 | if (list->cur >= list->len) { |
676 | list->len += 8; | |
677 | if (list->array) | |
678 | Renew(list->array, list->len, PerlIO_pair_t); | |
679 | else | |
a02a5408 | 680 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
681 | } |
682 | p = &(list->array[list->cur++]); | |
683 | p->funcs = funcs; | |
684 | if ((p->arg = arg)) { | |
f84c484e | 685 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 686 | } |
fcf2db38 NIS |
687 | } |
688 | ||
3a1ee7e8 NIS |
689 | PerlIO_list_t * |
690 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
691 | { | |
b37c2d43 | 692 | PerlIO_list_t *list = NULL; |
694c95cf JH |
693 | if (proto) { |
694 | int i; | |
695 | list = PerlIO_list_alloc(aTHX); | |
696 | for (i=0; i < proto->cur; i++) { | |
a951d81d BL |
697 | SV *arg = proto->array[i].arg; |
698 | #ifdef sv_dup | |
699 | if (arg && param) | |
700 | arg = sv_dup(arg, param); | |
701 | #else | |
702 | PERL_UNUSED_ARG(param); | |
703 | #endif | |
694c95cf JH |
704 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
705 | } | |
3a1ee7e8 NIS |
706 | } |
707 | return list; | |
708 | } | |
4a4a6116 | 709 | |
05d1247b | 710 | void |
3a1ee7e8 | 711 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 712 | { |
3aaf42a7 | 713 | #ifdef USE_ITHREADS |
303f2dc3 DM |
714 | PerlIOl **table = &proto->Iperlio; |
715 | PerlIOl *f; | |
3a1ee7e8 NIS |
716 | PL_perlio = NULL; |
717 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
718 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 719 | PerlIO_init_table(aTHX); |
a25429c6 | 720 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
721 | while ((f = *table)) { |
722 | int i; | |
303f2dc3 | 723 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 724 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
725 | if (f->next) { |
726 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
727 | } |
728 | f++; | |
729 | } | |
730 | } | |
1b6737cc | 731 | #else |
a25429c6 | 732 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
733 | PERL_UNUSED_ARG(proto); |
734 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 735 | #endif |
9a6404c5 DM |
736 | } |
737 | ||
738 | void | |
13621cfb NIS |
739 | PerlIO_destruct(pTHX) |
740 | { | |
97aff369 | 741 | dVAR; |
303f2dc3 DM |
742 | PerlIOl **table = &PL_perlio; |
743 | PerlIOl *f; | |
694c95cf | 744 | #ifdef USE_ITHREADS |
a25429c6 | 745 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 746 | #endif |
14a5cf38 JH |
747 | while ((f = *table)) { |
748 | int i; | |
303f2dc3 | 749 | table = (PerlIOl **) (f++); |
14a5cf38 | 750 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 751 | PerlIO *x = &(f->next); |
dcda55fc | 752 | const PerlIOl *l; |
14a5cf38 JH |
753 | while ((l = *x)) { |
754 | if (l->tab->kind & PERLIO_K_DESTRUCT) { | |
755 | PerlIO_debug("Destruct popping %s\n", l->tab->name); | |
756 | PerlIO_flush(x); | |
757 | PerlIO_pop(aTHX_ x); | |
758 | } | |
759 | else { | |
760 | x = PerlIONext(x); | |
761 | } | |
762 | } | |
763 | f++; | |
764 | } | |
765 | } | |
13621cfb NIS |
766 | } |
767 | ||
768 | void | |
a999f61b | 769 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 770 | { |
dcda55fc | 771 | const PerlIOl *l = *f; |
16865ff7 | 772 | VERIFY_HEAD(f); |
14a5cf38 | 773 | if (l) { |
fe5a182c | 774 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, l->tab->name); |
14a5cf38 JH |
775 | if (l->tab->Popped) { |
776 | /* | |
777 | * If popped returns non-zero do not free its layer structure | |
778 | * it has either done so itself, or it is shared and still in | |
71200d45 | 779 | * use |
14a5cf38 | 780 | */ |
f62ce20a | 781 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
782 | return; |
783 | } | |
b47cad08 | 784 | *f = l->next; |
3a1ee7e8 | 785 | Safefree(l); |
a8c08ecd | 786 | } |
6f9d8c32 NIS |
787 | } |
788 | ||
39f7a870 JH |
789 | /* Return as an array the stack of layers on a filehandle. Note that |
790 | * the stack is returned top-first in the array, and there are three | |
791 | * times as many array elements as there are layers in the stack: the | |
792 | * first element of a layer triplet is the name, the second one is the | |
793 | * arguments, and the third one is the flags. */ | |
794 | ||
795 | AV * | |
796 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
797 | { | |
97aff369 | 798 | dVAR; |
dcda55fc | 799 | AV * const av = newAV(); |
39f7a870 | 800 | |
dcda55fc AL |
801 | if (PerlIOValid(f)) { |
802 | PerlIOl *l = PerlIOBase(f); | |
803 | ||
804 | while (l) { | |
92e45a3e NC |
805 | /* There is some collusion in the implementation of |
806 | XS_PerlIO_get_layers - it knows that name and flags are | |
807 | generated as fresh SVs here, and takes advantage of that to | |
808 | "copy" them by taking a reference. If it changes here, it needs | |
809 | to change there too. */ | |
dcda55fc AL |
810 | SV * const name = l->tab && l->tab->name ? |
811 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
812 | SV * const arg = l->tab && l->tab->Getarg ? | |
813 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
814 | av_push(av, name); | |
815 | av_push(av, arg); | |
816 | av_push(av, newSViv((IV)l->flags)); | |
817 | l = l->next; | |
818 | } | |
819 | } | |
39f7a870 | 820 | |
dcda55fc | 821 | return av; |
39f7a870 JH |
822 | } |
823 | ||
9e353e3b | 824 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 825 | /* |
71200d45 | 826 | * XS Interface for perl code |
14a5cf38 | 827 | */ |
9e353e3b | 828 | |
fcf2db38 | 829 | PerlIO_funcs * |
2edd7e44 | 830 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 831 | { |
27da23d5 | 832 | dVAR; |
14a5cf38 JH |
833 | IV i; |
834 | if ((SSize_t) len <= 0) | |
835 | len = strlen(name); | |
3a1ee7e8 | 836 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 837 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 838 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 839 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
840 | return f; |
841 | } | |
842 | } | |
3a1ee7e8 NIS |
843 | if (load && PL_subname && PL_def_layerlist |
844 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
845 | if (PL_in_load_module) { |
846 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
847 | return NULL; | |
848 | } else { | |
396482e1 | 849 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 850 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 851 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 852 | ENTER; |
4fa7c2bf | 853 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 854 | if (cv) { |
9cfa90c0 | 855 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 856 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 857 | } |
4fa7c2bf | 858 | PL_in_load_module = TRUE; |
d7a09b41 SR |
859 | /* |
860 | * The two SVs are magically freed by load_module | |
861 | */ | |
a0714e2c | 862 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
863 | LEAVE; |
864 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
865 | } | |
14a5cf38 JH |
866 | } |
867 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
868 | return NULL; | |
f3862f8b NIS |
869 | } |
870 | ||
2a1bc955 | 871 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
872 | |
873 | static int | |
874 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
875 | { | |
14a5cf38 | 876 | if (SvROK(sv)) { |
159b6efe | 877 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
878 | PerlIO * const ifp = IoIFP(io); |
879 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
880 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
881 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
882 | } |
883 | return 0; | |
b13b2135 NIS |
884 | } |
885 | ||
886 | static int | |
887 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
888 | { | |
14a5cf38 | 889 | if (SvROK(sv)) { |
159b6efe | 890 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
891 | PerlIO * const ifp = IoIFP(io); |
892 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
893 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
894 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
895 | } |
896 | return 0; | |
b13b2135 NIS |
897 | } |
898 | ||
899 | static int | |
900 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
901 | { | |
be2597df | 902 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 903 | return 0; |
b13b2135 NIS |
904 | } |
905 | ||
906 | static int | |
907 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
908 | { | |
be2597df | 909 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 910 | return 0; |
b13b2135 NIS |
911 | } |
912 | ||
913 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
914 | perlio_mg_get, |
915 | perlio_mg_set, | |
22569500 | 916 | NULL, /* len */ |
14a5cf38 JH |
917 | perlio_mg_clear, |
918 | perlio_mg_free | |
b13b2135 NIS |
919 | }; |
920 | ||
921 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
922 | { | |
14a5cf38 | 923 | dXSARGS; |
dcda55fc AL |
924 | SV * const sv = SvRV(ST(1)); |
925 | AV * const av = newAV(); | |
14a5cf38 JH |
926 | MAGIC *mg; |
927 | int count = 0; | |
928 | int i; | |
ad64d0ec | 929 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
930 | SvRMAGICAL_off(sv); |
931 | mg = mg_find(sv, PERL_MAGIC_ext); | |
932 | mg->mg_virtual = &perlio_vtab; | |
933 | mg_magical(sv); | |
be2597df | 934 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
935 | for (i = 2; i < items; i++) { |
936 | STRLEN len; | |
dcda55fc AL |
937 | const char * const name = SvPV_const(ST(i), len); |
938 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 939 | if (layer) { |
b37c2d43 | 940 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
941 | } |
942 | else { | |
943 | ST(count) = ST(i); | |
944 | count++; | |
945 | } | |
946 | } | |
947 | SvREFCNT_dec(av); | |
948 | XSRETURN(count); | |
949 | } | |
950 | ||
22569500 | 951 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 952 | |
e3f3bf95 NIS |
953 | SV * |
954 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 955 | { |
da51bb9b | 956 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 957 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 958 | return sv; |
e3f3bf95 NIS |
959 | } |
960 | ||
5ca1d77f | 961 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 962 | { |
37725cdc | 963 | /* This is used as a %SIG{__WARN__} handler to supress warnings |
c9bca74a NIS |
964 | during loading of layers. |
965 | */ | |
97aff369 | 966 | dVAR; |
c9bca74a | 967 | dXSARGS; |
58c0efa5 | 968 | PERL_UNUSED_ARG(cv); |
c9bca74a | 969 | if (items) |
e62f0680 | 970 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
971 | XSRETURN(0); |
972 | } | |
973 | ||
5ca1d77f | 974 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 975 | { |
97aff369 | 976 | dVAR; |
14a5cf38 | 977 | dXSARGS; |
58c0efa5 | 978 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
979 | if (items < 2) |
980 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
981 | else { | |
de009b76 | 982 | STRLEN len; |
46c461b5 | 983 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 984 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 985 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
986 | ST(0) = |
987 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
988 | &PL_sv_undef; | |
989 | XSRETURN(1); | |
990 | } | |
0c4f7ff0 NIS |
991 | } |
992 | ||
e3f3bf95 NIS |
993 | void |
994 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
995 | { | |
97aff369 | 996 | dVAR; |
3a1ee7e8 NIS |
997 | if (!PL_known_layers) |
998 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 999 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 1000 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
1001 | } |
1002 | ||
1141d9f8 | 1003 | int |
fcf2db38 | 1004 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 1005 | { |
97aff369 | 1006 | dVAR; |
14a5cf38 JH |
1007 | if (names) { |
1008 | const char *s = names; | |
1009 | while (*s) { | |
1010 | while (isSPACE(*s) || *s == ':') | |
1011 | s++; | |
1012 | if (*s) { | |
1013 | STRLEN llen = 0; | |
1014 | const char *e = s; | |
bd61b366 | 1015 | const char *as = NULL; |
14a5cf38 JH |
1016 | STRLEN alen = 0; |
1017 | if (!isIDFIRST(*s)) { | |
1018 | /* | |
1019 | * Message is consistent with how attribute lists are | |
1020 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 1021 | * seen as an invalid separator character. |
14a5cf38 | 1022 | */ |
de009b76 | 1023 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
1024 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1025 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
1026 | q, *s, q, s); | |
93189314 | 1027 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1028 | return -1; |
1029 | } | |
1030 | do { | |
1031 | e++; | |
1032 | } while (isALNUM(*e)); | |
1033 | llen = e - s; | |
1034 | if (*e == '(') { | |
1035 | int nesting = 1; | |
1036 | as = ++e; | |
1037 | while (nesting) { | |
1038 | switch (*e++) { | |
1039 | case ')': | |
1040 | if (--nesting == 0) | |
1041 | alen = (e - 1) - as; | |
1042 | break; | |
1043 | case '(': | |
1044 | ++nesting; | |
1045 | break; | |
1046 | case '\\': | |
1047 | /* | |
1048 | * It's a nul terminated string, not allowed | |
1049 | * to \ the terminating null. Anything other | |
71200d45 | 1050 | * character is passed over. |
14a5cf38 JH |
1051 | */ |
1052 | if (*e++) { | |
1053 | break; | |
1054 | } | |
1055 | /* | |
71200d45 | 1056 | * Drop through |
14a5cf38 JH |
1057 | */ |
1058 | case '\0': | |
1059 | e--; | |
a2a5de95 NC |
1060 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1061 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
1062 | (int) (e - s), s); | |
14a5cf38 JH |
1063 | return -1; |
1064 | default: | |
1065 | /* | |
71200d45 | 1066 | * boring. |
14a5cf38 JH |
1067 | */ |
1068 | break; | |
1069 | } | |
1070 | } | |
1071 | } | |
1072 | if (e > s) { | |
46c461b5 | 1073 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1074 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1075 | if (layer) { | |
a951d81d BL |
1076 | SV *arg = NULL; |
1077 | if (as) | |
1078 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1079 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 1080 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 1081 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1082 | } |
1083 | else { | |
a2a5de95 NC |
1084 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
1085 | (int) llen, s); | |
14a5cf38 JH |
1086 | return -1; |
1087 | } | |
1088 | } | |
1089 | s = e; | |
1090 | } | |
1091 | } | |
1092 | } | |
1093 | return 0; | |
1141d9f8 NIS |
1094 | } |
1095 | ||
dfebf958 | 1096 | void |
fcf2db38 | 1097 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1098 | { |
97aff369 | 1099 | dVAR; |
27da23d5 | 1100 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1101 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1102 | tab = &PerlIO_crlf; |
846be114 | 1103 | #else |
6ce75a77 | 1104 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1105 | tab = &PerlIO_stdio; |
846be114 | 1106 | #endif |
14a5cf38 | 1107 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1108 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1109 | &PL_sv_undef); |
dfebf958 NIS |
1110 | } |
1111 | ||
e3f3bf95 | 1112 | SV * |
14a5cf38 | 1113 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1114 | { |
14a5cf38 | 1115 | return av->array[n].arg; |
e3f3bf95 NIS |
1116 | } |
1117 | ||
f3862f8b | 1118 | PerlIO_funcs * |
14a5cf38 | 1119 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1120 | { |
14a5cf38 JH |
1121 | if (n >= 0 && n < av->cur) { |
1122 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1123 | av->array[n].funcs->name); | |
1124 | return av->array[n].funcs; | |
1125 | } | |
1126 | if (!def) | |
1127 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1128 | return def; | |
e3f3bf95 NIS |
1129 | } |
1130 | ||
4ec2216f NIS |
1131 | IV |
1132 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1133 | { | |
8772537c AL |
1134 | PERL_UNUSED_ARG(mode); |
1135 | PERL_UNUSED_ARG(arg); | |
1136 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1137 | if (PerlIOValid(f)) { |
1138 | PerlIO_flush(f); | |
1139 | PerlIO_pop(aTHX_ f); | |
1140 | return 0; | |
1141 | } | |
1142 | return -1; | |
1143 | } | |
1144 | ||
27da23d5 | 1145 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1146 | sizeof(PerlIO_funcs), |
1147 | "pop", | |
1148 | 0, | |
1149 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1150 | PerlIOPop_pushed, | |
1151 | NULL, | |
1152 | NULL, | |
1153 | NULL, | |
1154 | NULL, | |
1155 | NULL, | |
1156 | NULL, | |
1157 | NULL, | |
1158 | NULL, | |
1159 | NULL, | |
1160 | NULL, | |
de009b76 AL |
1161 | NULL, |
1162 | NULL, | |
4ec2216f NIS |
1163 | NULL, /* flush */ |
1164 | NULL, /* fill */ | |
1165 | NULL, | |
1166 | NULL, | |
1167 | NULL, | |
1168 | NULL, | |
1169 | NULL, /* get_base */ | |
1170 | NULL, /* get_bufsiz */ | |
1171 | NULL, /* get_ptr */ | |
1172 | NULL, /* get_cnt */ | |
1173 | NULL, /* set_ptrcnt */ | |
1174 | }; | |
1175 | ||
fcf2db38 | 1176 | PerlIO_list_t * |
e3f3bf95 NIS |
1177 | PerlIO_default_layers(pTHX) |
1178 | { | |
97aff369 | 1179 | dVAR; |
3a1ee7e8 | 1180 | if (!PL_def_layerlist) { |
bd61b366 | 1181 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1182 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1183 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1184 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1185 | #if defined(WIN32) |
27da23d5 | 1186 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1187 | #if 0 |
14a5cf38 | 1188 | osLayer = &PerlIO_win32; |
0c4128ad | 1189 | #endif |
2f8118af | 1190 | #endif |
27da23d5 JH |
1191 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1192 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1193 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1194 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1195 | #ifdef HAS_MMAP |
27da23d5 | 1196 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1197 | #endif |
27da23d5 JH |
1198 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1199 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1200 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1201 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1202 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1203 | &PL_sv_undef); | |
1204 | if (s) { | |
3a1ee7e8 | 1205 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1206 | } |
1207 | else { | |
3a1ee7e8 | 1208 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1209 | } |
1141d9f8 | 1210 | } |
3a1ee7e8 NIS |
1211 | if (PL_def_layerlist->cur < 2) { |
1212 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1213 | } |
3a1ee7e8 | 1214 | return PL_def_layerlist; |
e3f3bf95 NIS |
1215 | } |
1216 | ||
0c4f7ff0 NIS |
1217 | void |
1218 | Perl_boot_core_PerlIO(pTHX) | |
1219 | { | |
1220 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1221 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1222 | __FILE__); | |
0c4f7ff0 | 1223 | #endif |
14a5cf38 | 1224 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1225 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1226 | } |
e3f3bf95 NIS |
1227 | |
1228 | PerlIO_funcs * | |
1229 | PerlIO_default_layer(pTHX_ I32 n) | |
1230 | { | |
97aff369 | 1231 | dVAR; |
46c461b5 | 1232 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1233 | if (n < 0) |
1234 | n += av->cur; | |
27da23d5 | 1235 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1236 | } |
1237 | ||
a999f61b NIS |
1238 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1239 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1240 | |
1241 | void | |
1141d9f8 | 1242 | PerlIO_stdstreams(pTHX) |
60382766 | 1243 | { |
97aff369 | 1244 | dVAR; |
a1ea730d | 1245 | if (!PL_perlio) { |
8995e67d | 1246 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1247 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1248 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1249 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1250 | } | |
60382766 NIS |
1251 | } |
1252 | ||
1253 | PerlIO * | |
27da23d5 | 1254 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1255 | { |
16865ff7 | 1256 | VERIFY_HEAD(f); |
2dc2558e | 1257 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 TM |
1258 | Perl_croak( aTHX_ |
1259 | "%s (%d) does not match %s (%d)", | |
1260 | "PerlIO layer function table size", tab->fsize, | |
1261 | "size expected by this perl", sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1262 | } |
1263 | if (tab->size) { | |
b464bac0 | 1264 | PerlIOl *l; |
2dc2558e | 1265 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 TM |
1266 | Perl_croak( aTHX_ |
1267 | "%s (%d) smaller than %s (%d)", | |
1268 | "PerlIO layer instance size", tab->size, | |
1269 | "size expected by this perl", sizeof(PerlIOl) ); | |
2dc2558e NIS |
1270 | } |
1271 | /* Real layer with a data area */ | |
002e75cf JH |
1272 | if (f) { |
1273 | char *temp; | |
1274 | Newxz(temp, tab->size, char); | |
1275 | l = (PerlIOl*)temp; | |
1276 | if (l) { | |
1277 | l->next = *f; | |
1278 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1279 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1280 | *f = l; |
1281 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1282 | (void*)f, tab->name, | |
1283 | (mode) ? mode : "(Null)", (void*)arg); | |
1284 | if (*l->tab->Pushed && | |
1285 | (*l->tab->Pushed) | |
1286 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1287 | PerlIO_pop(aTHX_ f); | |
1288 | return NULL; | |
1289 | } | |
2dc2558e | 1290 | } |
002e75cf JH |
1291 | else |
1292 | return NULL; | |
2dc2558e NIS |
1293 | } |
1294 | } | |
1295 | else if (f) { | |
1296 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1297 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1298 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1299 | if (tab->Pushed && |
27da23d5 | 1300 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1301 | return NULL; |
14a5cf38 JH |
1302 | } |
1303 | } | |
1304 | return f; | |
60382766 NIS |
1305 | } |
1306 | ||
dfebf958 | 1307 | IV |
86e05cf2 NIS |
1308 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1309 | { | |
1310 | if (PerlIOValid(f)) { | |
1311 | /* Is layer suitable for raw stream ? */ | |
1312 | if (PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1313 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1314 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1315 | } | |
1316 | else { | |
1317 | /* Not suitable - pop it */ | |
1318 | PerlIO_pop(aTHX_ f); | |
1319 | } | |
1320 | return 0; | |
1321 | } | |
1322 | return -1; | |
1323 | } | |
1324 | ||
1325 | IV | |
2dc2558e | 1326 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1327 | { |
8772537c AL |
1328 | PERL_UNUSED_ARG(mode); |
1329 | PERL_UNUSED_ARG(arg); | |
1330 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1331 | |
04892f78 | 1332 | if (PerlIOValid(f)) { |
86e05cf2 | 1333 | PerlIO *t; |
de009b76 | 1334 | const PerlIOl *l; |
14a5cf38 | 1335 | PerlIO_flush(f); |
86e05cf2 NIS |
1336 | /* |
1337 | * Strip all layers that are not suitable for a raw stream | |
1338 | */ | |
1339 | t = f; | |
1340 | while (t && (l = *t)) { | |
1341 | if (l->tab->Binmode) { | |
1342 | /* Has a handler - normal case */ | |
9d97e8b8 | 1343 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1344 | if (*t == l) { |
1345 | /* Layer still there - move down a layer */ | |
1346 | t = PerlIONext(t); | |
1347 | } | |
1348 | } | |
1349 | else { | |
1350 | return -1; | |
1351 | } | |
14a5cf38 JH |
1352 | } |
1353 | else { | |
86e05cf2 NIS |
1354 | /* No handler - pop it */ |
1355 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1356 | } |
1357 | } | |
86e05cf2 NIS |
1358 | if (PerlIOValid(f)) { |
1359 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); | |
1360 | return 0; | |
1361 | } | |
14a5cf38 JH |
1362 | } |
1363 | return -1; | |
dfebf958 NIS |
1364 | } |
1365 | ||
ac27b0f5 | 1366 | int |
14a5cf38 | 1367 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1368 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1369 | { |
14a5cf38 JH |
1370 | int code = 0; |
1371 | while (n < max) { | |
8772537c | 1372 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1373 | if (tab) { |
1374 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1375 | code = -1; | |
1376 | break; | |
1377 | } | |
1378 | } | |
1379 | n++; | |
1380 | } | |
1381 | return code; | |
e3f3bf95 NIS |
1382 | } |
1383 | ||
1384 | int | |
ac27b0f5 NIS |
1385 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1386 | { | |
14a5cf38 | 1387 | int code = 0; |
da0fccaa DG |
1388 | ENTER; |
1389 | save_scalar(PL_errgv); | |
53f1b6d2 | 1390 | if (f && names) { |
8772537c | 1391 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1392 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1393 | if (code == 0) { | |
d9dac8cd | 1394 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1395 | } |
3a1ee7e8 | 1396 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1397 | } |
da0fccaa | 1398 | LEAVE; |
14a5cf38 | 1399 | return code; |
ac27b0f5 NIS |
1400 | } |
1401 | ||
f3862f8b | 1402 | |
60382766 | 1403 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1404 | /* |
71200d45 | 1405 | * Given the abstraction above the public API functions |
14a5cf38 | 1406 | */ |
60382766 NIS |
1407 | |
1408 | int | |
f5b9d040 | 1409 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1410 | { |
68b5363f PD |
1411 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
1412 | (PerlIOBase(f)) ? PerlIOBase(f)->tab->name : "(Null)", | |
1413 | iotype, mode, (names) ? names : "(Null)"); | |
1414 | ||
03c0554d NIS |
1415 | if (names) { |
1416 | /* Do not flush etc. if (e.g.) switching encodings. | |
1417 | if a pushed layer knows it needs to flush lower layers | |
1418 | (for example :unix which is never going to call them) | |
1419 | it can do the flush when it is pushed. | |
1420 | */ | |
1421 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1422 | } | |
1423 | else { | |
86e05cf2 | 1424 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1425 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1426 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1427 | O_BINARY so we can look for it in mode. | |
1428 | */ | |
1429 | if (!(mode & O_BINARY)) { | |
1430 | /* Text mode */ | |
86e05cf2 NIS |
1431 | /* FIXME?: Looking down the layer stack seems wrong, |
1432 | but is a way of reaching past (say) an encoding layer | |
1433 | to flip CRLF-ness of the layer(s) below | |
1434 | */ | |
03c0554d NIS |
1435 | while (*f) { |
1436 | /* Perhaps we should turn on bottom-most aware layer | |
1437 | e.g. Ilya's idea that UNIX TTY could serve | |
1438 | */ | |
1439 | if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { | |
1440 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1441 | /* Not in text mode - flush any pending stuff and flip it */ | |
1442 | PerlIO_flush(f); | |
1443 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1444 | } | |
1445 | /* Only need to turn it on in one layer so we are done */ | |
1446 | return TRUE; | |
ed53a2bb | 1447 | } |
03c0554d | 1448 | f = PerlIONext(f); |
14a5cf38 | 1449 | } |
03c0554d NIS |
1450 | /* Not finding a CRLF aware layer presumably means we are binary |
1451 | which is not what was requested - so we failed | |
1452 | We _could_ push :crlf layer but so could caller | |
1453 | */ | |
1454 | return FALSE; | |
14a5cf38 | 1455 | } |
6ce75a77 | 1456 | #endif |
86e05cf2 NIS |
1457 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1458 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1459 | */ |
a0714e2c | 1460 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1461 | } |
f5b9d040 NIS |
1462 | } |
1463 | ||
f5b9d040 | 1464 | int |
e87a358a | 1465 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1466 | { |
37725cdc | 1467 | if (PerlIOValid(f)) { |
46c461b5 | 1468 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1469 | if (tab && tab->Close) |
1470 | return (*tab->Close)(aTHX_ f); | |
1471 | else | |
1472 | return PerlIOBase_close(aTHX_ f); | |
1473 | } | |
14a5cf38 | 1474 | else { |
93189314 | 1475 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1476 | return -1; |
1477 | } | |
76ced9ad NIS |
1478 | } |
1479 | ||
b931b1d9 | 1480 | int |
e87a358a | 1481 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1482 | { |
de009b76 | 1483 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1484 | while (PerlIOValid(f)) { |
1485 | PerlIO_pop(aTHX_ f); | |
f6c77cf1 | 1486 | } |
14a5cf38 | 1487 | return code; |
b931b1d9 NIS |
1488 | } |
1489 | ||
b931b1d9 | 1490 | int |
e87a358a | 1491 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1492 | { |
97aff369 | 1493 | dVAR; |
b32dd47e | 1494 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1495 | } |
1496 | ||
1141d9f8 | 1497 | |
fcf2db38 | 1498 | static PerlIO_funcs * |
2edd7e44 NIS |
1499 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1500 | { | |
97aff369 | 1501 | dVAR; |
14a5cf38 | 1502 | /* |
71200d45 | 1503 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1504 | */ |
526fd1b4 | 1505 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1506 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1507 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1508 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 NC |
1509 | if (!f) |
1510 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); | |
75208dda RGS |
1511 | return f; |
1512 | } | |
14a5cf38 JH |
1513 | |
1514 | /* | |
71200d45 | 1515 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1516 | */ |
1517 | switch (SvTYPE(sv)) { | |
1518 | case SVt_PVAV: | |
6a245ed1 | 1519 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1520 | case SVt_PVHV: |
6a245ed1 | 1521 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1522 | case SVt_PVCV: |
6a245ed1 | 1523 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1524 | case SVt_PVGV: |
6a245ed1 | 1525 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1526 | default: |
1527 | return NULL; | |
14a5cf38 | 1528 | } |
2edd7e44 NIS |
1529 | } |
1530 | ||
fcf2db38 | 1531 | PerlIO_list_t * |
14a5cf38 JH |
1532 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1533 | const char *mode, int narg, SV **args) | |
1534 | { | |
97aff369 | 1535 | dVAR; |
14a5cf38 JH |
1536 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1537 | int incdef = 1; | |
a1ea730d | 1538 | if (!PL_perlio) |
14a5cf38 JH |
1539 | PerlIO_stdstreams(aTHX); |
1540 | if (narg) { | |
dcda55fc | 1541 | SV * const arg = *args; |
14a5cf38 | 1542 | /* |
71200d45 NIS |
1543 | * If it is a reference but not an object see if we have a handler |
1544 | * for it | |
14a5cf38 JH |
1545 | */ |
1546 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1547 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1548 | if (handler) { |
3a1ee7e8 NIS |
1549 | def = PerlIO_list_alloc(aTHX); |
1550 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1551 | incdef = 0; |
1552 | } | |
1553 | /* | |
e934609f | 1554 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1555 | * something sensible else we will just stringfy and open |
71200d45 | 1556 | * resulting string. |
14a5cf38 JH |
1557 | */ |
1558 | } | |
1559 | } | |
9fe371da | 1560 | if (!layers || !*layers) |
11bcd5da | 1561 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1562 | if (layers && *layers) { |
1563 | PerlIO_list_t *av; | |
1564 | if (incdef) { | |
a951d81d | 1565 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1566 | } |
1567 | else { | |
1568 | av = def; | |
1569 | } | |
0cff2cf3 NIS |
1570 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1571 | return av; | |
1572 | } | |
1573 | else { | |
1574 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1575 | return NULL; |
0cff2cf3 | 1576 | } |
14a5cf38 JH |
1577 | } |
1578 | else { | |
1579 | if (incdef) | |
1580 | def->refcnt++; | |
1581 | return def; | |
1582 | } | |
ee518936 NIS |
1583 | } |
1584 | ||
1585 | PerlIO * | |
14a5cf38 JH |
1586 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1587 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1588 | { | |
97aff369 | 1589 | dVAR; |
14a5cf38 JH |
1590 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1591 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1592 | if (!layers || !*layers) |
11bcd5da | 1593 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1594 | if (layers && *layers) |
1595 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1596 | } | |
1597 | } | |
1598 | else { | |
de009b76 | 1599 | PerlIO_list_t *layera; |
14a5cf38 JH |
1600 | IV n; |
1601 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1602 | if (PerlIOValid(f)) { |
14a5cf38 | 1603 | /* |
71200d45 NIS |
1604 | * This is "reopen" - it is not tested as perl does not use it |
1605 | * yet | |
14a5cf38 JH |
1606 | */ |
1607 | PerlIOl *l = *f; | |
3a1ee7e8 | 1608 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1609 | while (l) { |
a951d81d BL |
1610 | SV *arg = NULL; |
1611 | if (l->tab->Getarg) | |
1612 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); | |
1613 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1614 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1615 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1616 | l = *PerlIONext(&l); |
1617 | } | |
1618 | } | |
1619 | else { | |
1620 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1621 | if (!layera) { |
1622 | return NULL; | |
1623 | } | |
14a5cf38 JH |
1624 | } |
1625 | /* | |
71200d45 | 1626 | * Start at "top" of layer stack |
14a5cf38 JH |
1627 | */ |
1628 | n = layera->cur - 1; | |
1629 | while (n >= 0) { | |
46c461b5 | 1630 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1631 | if (t && t->Open) { |
1632 | tab = t; | |
1633 | break; | |
1634 | } | |
1635 | n--; | |
1636 | } | |
1637 | if (tab) { | |
1638 | /* | |
71200d45 | 1639 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1640 | */ |
7cf31beb | 1641 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1642 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1643 | } |
14a5cf38 | 1644 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1645 | tab->name, layers ? layers : "(Null)", mode, fd, |
1646 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1647 | if (tab->Open) |
1648 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1649 | f, narg, args); | |
1650 | else { | |
1651 | SETERRNO(EINVAL, LIB_INVARG); | |
1652 | f = NULL; | |
1653 | } | |
14a5cf38 JH |
1654 | if (f) { |
1655 | if (n + 1 < layera->cur) { | |
1656 | /* | |
1657 | * More layers above the one that we used to open - | |
71200d45 | 1658 | * apply them now |
14a5cf38 | 1659 | */ |
d9dac8cd NIS |
1660 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1661 | /* If pushing layers fails close the file */ | |
1662 | PerlIO_close(f); | |
14a5cf38 JH |
1663 | f = NULL; |
1664 | } | |
1665 | } | |
1666 | } | |
1667 | } | |
3a1ee7e8 | 1668 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1669 | } |
1670 | return f; | |
ee518936 | 1671 | } |
b931b1d9 NIS |
1672 | |
1673 | ||
9e353e3b | 1674 | SSize_t |
e87a358a | 1675 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1676 | { |
7918f24d NC |
1677 | PERL_ARGS_ASSERT_PERLIO_READ; |
1678 | ||
b32dd47e | 1679 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1680 | } |
1681 | ||
313ca112 | 1682 | SSize_t |
e87a358a | 1683 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1684 | { |
7918f24d NC |
1685 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1686 | ||
b32dd47e | 1687 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1688 | } |
1689 | ||
9e353e3b | 1690 | SSize_t |
e87a358a | 1691 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1692 | { |
7918f24d NC |
1693 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1694 | ||
b32dd47e | 1695 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1696 | } |
1697 | ||
6f9d8c32 | 1698 | int |
e87a358a | 1699 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1700 | { |
b32dd47e | 1701 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1702 | } |
1703 | ||
9e353e3b | 1704 | Off_t |
e87a358a | 1705 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1706 | { |
b32dd47e | 1707 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1708 | } |
1709 | ||
6f9d8c32 | 1710 | int |
e87a358a | 1711 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1712 | { |
97aff369 | 1713 | dVAR; |
14a5cf38 JH |
1714 | if (f) { |
1715 | if (*f) { | |
de009b76 | 1716 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1717 | |
1718 | if (tab && tab->Flush) | |
f62ce20a | 1719 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1720 | else |
1721 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1722 | } |
1723 | else { | |
fe5a182c | 1724 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1725 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1726 | return -1; |
1727 | } | |
1728 | } | |
1729 | else { | |
1730 | /* | |
1731 | * Is it good API design to do flush-all on NULL, a potentially | |
1732 | * errorneous input? Maybe some magical value (PerlIO* | |
1733 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1734 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1735 | * decisions? --jhi |
14a5cf38 | 1736 | */ |
303f2dc3 DM |
1737 | PerlIOl **table = &PL_perlio; |
1738 | PerlIOl *ff; | |
14a5cf38 | 1739 | int code = 0; |
303f2dc3 | 1740 | while ((ff = *table)) { |
14a5cf38 | 1741 | int i; |
303f2dc3 | 1742 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1743 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1744 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1745 | code = -1; |
303f2dc3 | 1746 | ff++; |
14a5cf38 JH |
1747 | } |
1748 | } | |
1749 | return code; | |
1750 | } | |
760ac839 LW |
1751 | } |
1752 | ||
a9c883f6 | 1753 | void |
f62ce20a | 1754 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1755 | { |
97aff369 | 1756 | dVAR; |
303f2dc3 DM |
1757 | PerlIOl **table = &PL_perlio; |
1758 | PerlIOl *f; | |
14a5cf38 JH |
1759 | while ((f = *table)) { |
1760 | int i; | |
303f2dc3 | 1761 | table = (PerlIOl **) (f++); |
14a5cf38 | 1762 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1763 | if (f->next |
1764 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1765 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1766 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1767 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1768 | f++; |
1769 | } | |
a9c883f6 | 1770 | } |
a9c883f6 NIS |
1771 | } |
1772 | ||
06da4f11 | 1773 | int |
e87a358a | 1774 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1775 | { |
b32dd47e | 1776 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1777 | } |
1778 | ||
f3862f8b NIS |
1779 | int |
1780 | PerlIO_isutf8(PerlIO *f) | |
1781 | { | |
1b7a0411 JH |
1782 | if (PerlIOValid(f)) |
1783 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1784 | else | |
1785 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1786 | |
1b7a0411 | 1787 | return -1; |
f3862f8b NIS |
1788 | } |
1789 | ||
6f9d8c32 | 1790 | int |
e87a358a | 1791 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1792 | { |
b32dd47e | 1793 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1794 | } |
1795 | ||
9e353e3b | 1796 | int |
e87a358a | 1797 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1798 | { |
b32dd47e | 1799 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1800 | } |
1801 | ||
9e353e3b | 1802 | void |
e87a358a | 1803 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1804 | { |
b32dd47e | 1805 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1806 | } |
1807 | ||
9e353e3b | 1808 | void |
e87a358a | 1809 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1810 | { |
b32dd47e | 1811 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1812 | } |
1813 | ||
9e353e3b NIS |
1814 | int |
1815 | PerlIO_has_base(PerlIO *f) | |
1816 | { | |
1b7a0411 | 1817 | if (PerlIOValid(f)) { |
46c461b5 | 1818 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1819 | |
1820 | if (tab) | |
1821 | return (tab->Get_base != NULL); | |
1b7a0411 | 1822 | } |
1b7a0411 JH |
1823 | |
1824 | return 0; | |
760ac839 LW |
1825 | } |
1826 | ||
9e353e3b NIS |
1827 | int |
1828 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1829 | { |
d7dfc388 SK |
1830 | if (PerlIOValid(f)) { |
1831 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1832 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1833 | |
d7dfc388 SK |
1834 | if (tab) |
1835 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1836 | } |
14a5cf38 | 1837 | } |
1b7a0411 | 1838 | |
14a5cf38 | 1839 | return 0; |
9e353e3b NIS |
1840 | } |
1841 | ||
9e353e3b NIS |
1842 | int |
1843 | PerlIO_has_cntptr(PerlIO *f) | |
1844 | { | |
04892f78 | 1845 | if (PerlIOValid(f)) { |
46c461b5 | 1846 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1847 | |
1848 | if (tab) | |
1849 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1850 | } |
1b7a0411 | 1851 | |
14a5cf38 | 1852 | return 0; |
9e353e3b NIS |
1853 | } |
1854 | ||
9e353e3b NIS |
1855 | int |
1856 | PerlIO_canset_cnt(PerlIO *f) | |
1857 | { | |
04892f78 | 1858 | if (PerlIOValid(f)) { |
46c461b5 | 1859 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1860 | |
1861 | if (tab) | |
1862 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1863 | } |
1b7a0411 | 1864 | |
14a5cf38 | 1865 | return 0; |
760ac839 LW |
1866 | } |
1867 | ||
888911fc | 1868 | STDCHAR * |
e87a358a | 1869 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1870 | { |
b32dd47e | 1871 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1872 | } |
1873 | ||
9e353e3b | 1874 | int |
e87a358a | 1875 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1876 | { |
b32dd47e | 1877 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1878 | } |
1879 | ||
9e353e3b | 1880 | STDCHAR * |
e87a358a | 1881 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1882 | { |
b32dd47e | 1883 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1884 | } |
1885 | ||
05d1247b | 1886 | int |
e87a358a | 1887 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1888 | { |
b32dd47e | 1889 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1890 | } |
1891 | ||
9e353e3b | 1892 | void |
e87a358a | 1893 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1894 | { |
b32dd47e | 1895 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1896 | } |
1897 | ||
9e353e3b | 1898 | void |
e87a358a | 1899 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1900 | { |
b32dd47e | 1901 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1902 | } |
1903 | ||
4ec2216f | 1904 | |
9e353e3b | 1905 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1906 | /* |
71200d45 | 1907 | * utf8 and raw dummy layers |
14a5cf38 | 1908 | */ |
dfebf958 | 1909 | |
26fb694e | 1910 | IV |
2dc2558e | 1911 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1912 | { |
96a5add6 | 1913 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1914 | PERL_UNUSED_ARG(mode); |
1915 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1916 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1917 | if (tab->kind & PERLIO_K_UTF8) |
1918 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1919 | else | |
1920 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1921 | return 0; | |
1922 | } | |
1923 | return -1; | |
26fb694e NIS |
1924 | } |
1925 | ||
27da23d5 | 1926 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1927 | sizeof(PerlIO_funcs), |
14a5cf38 | 1928 | "utf8", |
2dc2558e | 1929 | 0, |
6874a2de | 1930 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1931 | PerlIOUtf8_pushed, |
1932 | NULL, | |
1933 | NULL, | |
1934 | NULL, | |
1935 | NULL, | |
1936 | NULL, | |
1937 | NULL, | |
1938 | NULL, | |
1939 | NULL, | |
1940 | NULL, | |
1941 | NULL, | |
de009b76 AL |
1942 | NULL, |
1943 | NULL, | |
22569500 NIS |
1944 | NULL, /* flush */ |
1945 | NULL, /* fill */ | |
14a5cf38 JH |
1946 | NULL, |
1947 | NULL, | |
1948 | NULL, | |
1949 | NULL, | |
22569500 NIS |
1950 | NULL, /* get_base */ |
1951 | NULL, /* get_bufsiz */ | |
1952 | NULL, /* get_ptr */ | |
1953 | NULL, /* get_cnt */ | |
1954 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1955 | }; |
1956 | ||
27da23d5 | 1957 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1958 | sizeof(PerlIO_funcs), |
14a5cf38 | 1959 | "bytes", |
2dc2558e | 1960 | 0, |
14a5cf38 JH |
1961 | PERLIO_K_DUMMY, |
1962 | PerlIOUtf8_pushed, | |
1963 | NULL, | |
1964 | NULL, | |
1965 | NULL, | |
1966 | NULL, | |
1967 | NULL, | |
1968 | NULL, | |
1969 | NULL, | |
1970 | NULL, | |
1971 | NULL, | |
1972 | NULL, | |
de009b76 AL |
1973 | NULL, |
1974 | NULL, | |
22569500 NIS |
1975 | NULL, /* flush */ |
1976 | NULL, /* fill */ | |
14a5cf38 JH |
1977 | NULL, |
1978 | NULL, | |
1979 | NULL, | |
1980 | NULL, | |
22569500 NIS |
1981 | NULL, /* get_base */ |
1982 | NULL, /* get_bufsiz */ | |
1983 | NULL, /* get_ptr */ | |
1984 | NULL, /* get_cnt */ | |
1985 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1986 | }; |
1987 | ||
1988 | PerlIO * | |
14a5cf38 JH |
1989 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1990 | IV n, const char *mode, int fd, int imode, int perm, | |
1991 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1992 | { |
8772537c AL |
1993 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1994 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1995 | if (tab && tab->Open) |
1996 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1997 | old, narg, args); | |
1998 | SETERRNO(EINVAL, LIB_INVARG); | |
1999 | return NULL; | |
dfebf958 NIS |
2000 | } |
2001 | ||
27da23d5 | 2002 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 2003 | sizeof(PerlIO_funcs), |
14a5cf38 | 2004 | "raw", |
2dc2558e | 2005 | 0, |
14a5cf38 JH |
2006 | PERLIO_K_DUMMY, |
2007 | PerlIORaw_pushed, | |
2008 | PerlIOBase_popped, | |
2009 | PerlIORaw_open, | |
2010 | NULL, | |
2011 | NULL, | |
2012 | NULL, | |
2013 | NULL, | |
2014 | NULL, | |
2015 | NULL, | |
2016 | NULL, | |
2017 | NULL, | |
de009b76 AL |
2018 | NULL, |
2019 | NULL, | |
22569500 NIS |
2020 | NULL, /* flush */ |
2021 | NULL, /* fill */ | |
14a5cf38 JH |
2022 | NULL, |
2023 | NULL, | |
2024 | NULL, | |
2025 | NULL, | |
22569500 NIS |
2026 | NULL, /* get_base */ |
2027 | NULL, /* get_bufsiz */ | |
2028 | NULL, /* get_ptr */ | |
2029 | NULL, /* get_cnt */ | |
2030 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
2031 | }; |
2032 | /*--------------------------------------------------------------------------------------*/ | |
2033 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2034 | /* |
71200d45 | 2035 | * "Methods" of the "base class" |
14a5cf38 | 2036 | */ |
9e353e3b NIS |
2037 | |
2038 | IV | |
f62ce20a | 2039 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2040 | { |
04892f78 | 2041 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
2042 | } |
2043 | ||
f5b9d040 | 2044 | char * |
81428673 | 2045 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
2046 | { |
2047 | char *s = buf; | |
81428673 | 2048 | if (PerlIOValid(f)) { |
de009b76 | 2049 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2050 | if (flags & PERLIO_F_APPEND) { |
2051 | *s++ = 'a'; | |
2052 | if (flags & PERLIO_F_CANREAD) { | |
2053 | *s++ = '+'; | |
2054 | } | |
14a5cf38 | 2055 | } |
81428673 NIS |
2056 | else if (flags & PERLIO_F_CANREAD) { |
2057 | *s++ = 'r'; | |
2058 | if (flags & PERLIO_F_CANWRITE) | |
2059 | *s++ = '+'; | |
2060 | } | |
2061 | else if (flags & PERLIO_F_CANWRITE) { | |
2062 | *s++ = 'w'; | |
2063 | if (flags & PERLIO_F_CANREAD) { | |
2064 | *s++ = '+'; | |
2065 | } | |
14a5cf38 | 2066 | } |
35990314 | 2067 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2068 | if (!(flags & PERLIO_F_CRLF)) |
2069 | *s++ = 'b'; | |
5f1a76d0 | 2070 | #endif |
81428673 | 2071 | } |
14a5cf38 JH |
2072 | *s = '\0'; |
2073 | return buf; | |
f5b9d040 NIS |
2074 | } |
2075 | ||
81428673 | 2076 | |
76ced9ad | 2077 | IV |
2dc2558e | 2078 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2079 | { |
de009b76 | 2080 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2081 | PERL_UNUSED_CONTEXT; |
8772537c | 2082 | PERL_UNUSED_ARG(arg); |
de009b76 | 2083 | |
14a5cf38 JH |
2084 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2085 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2086 | if (tab->Set_ptrcnt != NULL) | |
2087 | l->flags |= PERLIO_F_FASTGETS; | |
2088 | if (mode) { | |
3b6c1aba | 2089 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2090 | mode++; |
2091 | switch (*mode++) { | |
2092 | case 'r': | |
2093 | l->flags |= PERLIO_F_CANREAD; | |
2094 | break; | |
2095 | case 'a': | |
2096 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2097 | break; | |
2098 | case 'w': | |
2099 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2100 | break; | |
2101 | default: | |
93189314 | 2102 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2103 | return -1; |
2104 | } | |
2105 | while (*mode) { | |
2106 | switch (*mode++) { | |
2107 | case '+': | |
2108 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2109 | break; | |
2110 | case 'b': | |
2111 | l->flags &= ~PERLIO_F_CRLF; | |
2112 | break; | |
2113 | case 't': | |
2114 | l->flags |= PERLIO_F_CRLF; | |
2115 | break; | |
2116 | default: | |
93189314 | 2117 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2118 | return -1; |
2119 | } | |
2120 | } | |
2121 | } | |
2122 | else { | |
2123 | if (l->next) { | |
2124 | l->flags |= l->next->flags & | |
2125 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2126 | PERLIO_F_APPEND); | |
2127 | } | |
2128 | } | |
5e2ab84b | 2129 | #if 0 |
14a5cf38 | 2130 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2131 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2132 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2133 | #endif |
14a5cf38 | 2134 | return 0; |
76ced9ad NIS |
2135 | } |
2136 | ||
2137 | IV | |
f62ce20a | 2138 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2139 | { |
96a5add6 | 2140 | PERL_UNUSED_CONTEXT; |
8772537c | 2141 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2142 | return 0; |
760ac839 LW |
2143 | } |
2144 | ||
9e353e3b | 2145 | SSize_t |
f62ce20a | 2146 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2147 | { |
14a5cf38 | 2148 | /* |
71200d45 | 2149 | * Save the position as current head considers it |
14a5cf38 | 2150 | */ |
de009b76 | 2151 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2152 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2153 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2154 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2155 | } |
2156 | ||
f6c77cf1 | 2157 | SSize_t |
f62ce20a | 2158 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2159 | { |
14a5cf38 JH |
2160 | STDCHAR *buf = (STDCHAR *) vbuf; |
2161 | if (f) { | |
263df5f1 JH |
2162 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2163 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2164 | SETERRNO(EBADF, SS_IVCHAN); | |
2165 | return 0; | |
2166 | } | |
14a5cf38 | 2167 | while (count > 0) { |
93c2c2ec IZ |
2168 | get_cnt: |
2169 | { | |
14a5cf38 JH |
2170 | SSize_t avail = PerlIO_get_cnt(f); |
2171 | SSize_t take = 0; | |
2172 | if (avail > 0) | |
bb7a0f54 | 2173 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2174 | if (take > 0) { |
2175 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2176 | Copy(ptr, buf, take, STDCHAR); | |
2177 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2178 | count -= take; | |
2179 | buf += take; | |
93c2c2ec IZ |
2180 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2181 | goto get_cnt; | |
14a5cf38 JH |
2182 | } |
2183 | if (count > 0 && avail <= 0) { | |
2184 | if (PerlIO_fill(f) != 0) | |
2185 | break; | |
2186 | } | |
93c2c2ec | 2187 | } |
14a5cf38 JH |
2188 | } |
2189 | return (buf - (STDCHAR *) vbuf); | |
2190 | } | |
f6c77cf1 | 2191 | return 0; |
f6c77cf1 NIS |
2192 | } |
2193 | ||
9e353e3b | 2194 | IV |
f62ce20a | 2195 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2196 | { |
96a5add6 | 2197 | PERL_UNUSED_CONTEXT; |
8772537c | 2198 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2199 | return 0; |
9e353e3b NIS |
2200 | } |
2201 | ||
2202 | IV | |
f62ce20a | 2203 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2204 | { |
96a5add6 | 2205 | PERL_UNUSED_CONTEXT; |
8772537c | 2206 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2207 | return -1; |
06da4f11 NIS |
2208 | } |
2209 | ||
2210 | IV | |
f62ce20a | 2211 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2212 | { |
37725cdc NIS |
2213 | IV code = -1; |
2214 | if (PerlIOValid(f)) { | |
2215 | PerlIO *n = PerlIONext(f); | |
2216 | code = PerlIO_flush(f); | |
2217 | PerlIOBase(f)->flags &= | |
2218 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2219 | while (PerlIOValid(n)) { | |
de009b76 | 2220 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2221 | if (tab && tab->Close) { |
2222 | if ((*tab->Close)(aTHX_ n) != 0) | |
2223 | code = -1; | |
2224 | break; | |
2225 | } | |
2226 | else { | |
2227 | PerlIOBase(n)->flags &= | |
2228 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2229 | } | |
2230 | n = PerlIONext(n); | |
2231 | } | |
2232 | } | |
2233 | else { | |
2234 | SETERRNO(EBADF, SS_IVCHAN); | |
2235 | } | |
14a5cf38 | 2236 | return code; |
9e353e3b NIS |
2237 | } |
2238 | ||
2239 | IV | |
f62ce20a | 2240 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2241 | { |
96a5add6 | 2242 | PERL_UNUSED_CONTEXT; |
04892f78 | 2243 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2244 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2245 | } | |
2246 | return 1; | |
9e353e3b NIS |
2247 | } |
2248 | ||
2249 | IV | |
f62ce20a | 2250 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2251 | { |
96a5add6 | 2252 | PERL_UNUSED_CONTEXT; |
04892f78 | 2253 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2254 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2255 | } | |
2256 | return 1; | |
9e353e3b NIS |
2257 | } |
2258 | ||
2259 | void | |
f62ce20a | 2260 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2261 | { |
04892f78 | 2262 | if (PerlIOValid(f)) { |
dcda55fc | 2263 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2264 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2265 | if (PerlIOValid(n)) |
14a5cf38 JH |
2266 | PerlIO_clearerr(n); |
2267 | } | |
9e353e3b NIS |
2268 | } |
2269 | ||
2270 | void | |
f62ce20a | 2271 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2272 | { |
96a5add6 | 2273 | PERL_UNUSED_CONTEXT; |
04892f78 | 2274 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2275 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2276 | } | |
9e353e3b NIS |
2277 | } |
2278 | ||
93a8090d NIS |
2279 | SV * |
2280 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2281 | { | |
2282 | if (!arg) | |
a0714e2c | 2283 | return NULL; |
93a8090d NIS |
2284 | #ifdef sv_dup |
2285 | if (param) { | |
a951d81d BL |
2286 | arg = sv_dup(arg, param); |
2287 | SvREFCNT_inc_simple_void_NN(arg); | |
2288 | return arg; | |
93a8090d NIS |
2289 | } |
2290 | else { | |
2291 | return newSVsv(arg); | |
2292 | } | |
2293 | #else | |
1b6737cc | 2294 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2295 | return newSVsv(arg); |
2296 | #endif | |
2297 | } | |
2298 | ||
2299 | PerlIO * | |
ecdeb87c | 2300 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2301 | { |
1b6737cc | 2302 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2303 | if (PerlIOValid(nexto)) { |
de009b76 | 2304 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2305 | if (tab && tab->Dup) |
2306 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2307 | else | |
2308 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2309 | } |
2310 | if (f) { | |
dcda55fc | 2311 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2312 | SV *arg = NULL; |
93a8090d | 2313 | char buf[8]; |
fe5a182c JH |
2314 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2315 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2316 | if (self->Getarg) |
2317 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2318 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2319 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2320 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
ef8d46e8 | 2321 | SvREFCNT_dec(arg); |
93a8090d NIS |
2322 | } |
2323 | return f; | |
2324 | } | |
2325 | ||
27da23d5 | 2326 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2327 | |
8b84d7dd | 2328 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2329 | static void |
2330 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2331 | dVAR; |
22c96fc1 | 2332 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2333 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2334 | int *new_array; |
2335 | ||
2336 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2337 | old_max, new_fd, new_max); | |
2338 | ||
2339 | if (new_fd < old_max) { | |
2340 | return; | |
2341 | } | |
2342 | ||
f4ae5be6 NC |
2343 | assert (new_max > new_fd); |
2344 | ||
eae082a0 JH |
2345 | /* Use plain realloc() since we need this memory to be really |
2346 | * global and visible to all the interpreters and/or threads. */ | |
2347 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2348 | |
2349 | if (!new_array) { | |
8b84d7dd | 2350 | #ifdef USE_ITHREADS |
6cb8cb21 | 2351 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2352 | #endif |
2353 | /* Can't use PerlIO to write as it allocates memory */ | |
2354 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2355 | PL_no_mem, strlen(PL_no_mem)); | |
2356 | my_exit(1); | |
2357 | } | |
2358 | ||
2359 | PL_perlio_fd_refcnt_size = new_max; | |
2360 | PL_perlio_fd_refcnt = new_array; | |
2361 | ||
95b63a38 JH |
2362 | PerlIO_debug("Zeroing %p, %d\n", |
2363 | (void*)(new_array + old_max), | |
2364 | new_max - old_max); | |
22c96fc1 NC |
2365 | |
2366 | Zero(new_array + old_max, new_max - old_max, int); | |
2367 | } | |
2368 | ||
2369 | ||
93a8090d NIS |
2370 | void |
2371 | PerlIO_init(pTHX) | |
2372 | { | |
8b84d7dd | 2373 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2374 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2375 | } |
2376 | ||
168d5872 NIS |
2377 | void |
2378 | PerlIOUnix_refcnt_inc(int fd) | |
2379 | { | |
27da23d5 | 2380 | dTHX; |
22c96fc1 | 2381 | if (fd >= 0) { |
97aff369 | 2382 | dVAR; |
22c96fc1 | 2383 | |
8b84d7dd | 2384 | #ifdef USE_ITHREADS |
6cb8cb21 | 2385 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2386 | #endif |
22c96fc1 NC |
2387 | if (fd >= PL_perlio_fd_refcnt_size) |
2388 | S_more_refcounted_fds(aTHX_ fd); | |
2389 | ||
27da23d5 | 2390 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd RGS |
2391 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
2392 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2393 | fd, PL_perlio_fd_refcnt[fd]); | |
2394 | } | |
2395 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2396 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2397 | |
8b84d7dd | 2398 | #ifdef USE_ITHREADS |
6cb8cb21 | 2399 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2400 | #endif |
8b84d7dd RGS |
2401 | } else { |
2402 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2403 | } |
2404 | } | |
2405 | ||
168d5872 NIS |
2406 | int |
2407 | PerlIOUnix_refcnt_dec(int fd) | |
2408 | { | |
27da23d5 | 2409 | dTHX; |
168d5872 | 2410 | int cnt = 0; |
22c96fc1 | 2411 | if (fd >= 0) { |
97aff369 | 2412 | dVAR; |
8b84d7dd | 2413 | #ifdef USE_ITHREADS |
6cb8cb21 | 2414 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2415 | #endif |
8b84d7dd RGS |
2416 | if (fd >= PL_perlio_fd_refcnt_size) { |
2417 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", | |
2418 | fd, PL_perlio_fd_refcnt_size); | |
2419 | } | |
2420 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2421 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", | |
2422 | fd, PL_perlio_fd_refcnt[fd]); | |
2423 | } | |
27da23d5 | 2424 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2425 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2426 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2427 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2428 | #endif |
8b84d7dd RGS |
2429 | } else { |
2430 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2431 | } |
2432 | return cnt; | |
2433 | } | |
2434 | ||
694c95cf JH |
2435 | void |
2436 | PerlIO_cleanup(pTHX) | |
2437 | { | |
97aff369 | 2438 | dVAR; |
694c95cf JH |
2439 | int i; |
2440 | #ifdef USE_ITHREADS | |
a25429c6 | 2441 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2442 | #else |
2443 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2444 | #endif |
e47547a8 | 2445 | |
694c95cf JH |
2446 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2447 | for (i=0; i < 3; i++) | |
2448 | PerlIOUnix_refcnt_inc(i); | |
2449 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2450 | /* Restore STDIN..STDERR refcount */ | |
2451 | for (i=0; i < 3; i++) | |
2452 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2453 | |
2454 | if (PL_known_layers) { | |
2455 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2456 | PL_known_layers = NULL; | |
2457 | } | |
27da23d5 | 2458 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2459 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2460 | PL_def_layerlist = NULL; | |
2461 | } | |
6cb8cb21 RGS |
2462 | } |
2463 | ||
0934c9d9 | 2464 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2465 | { |
53d44271 | 2466 | dVAR; |
4f3da17a DM |
2467 | #if 0 |
2468 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2469 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2470 | being present (at least in win32) :-(. | |
2471 | Disable for now. | |
2472 | */ | |
6cb8cb21 RGS |
2473 | #ifdef DEBUGGING |
2474 | { | |
2475 | /* By now all filehandles should have been closed, so any | |
2476 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2477 | * errors. */ | |
77db880c JH |
2478 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2479 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2480 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2481 | int i; |
2482 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2483 | if (PL_perlio_fd_refcnt[i]) { |
2484 | const STRLEN len = | |
2485 | my_snprintf(buf, sizeof(buf), | |
2486 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2487 | i, PL_perlio_fd_refcnt[i]); | |
2488 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2489 | } | |
6cb8cb21 RGS |
2490 | } |
2491 | } | |
2492 | #endif | |
4f3da17a | 2493 | #endif |
eae082a0 JH |
2494 | /* Not bothering with PL_perlio_mutex since by now |
2495 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2496 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2497 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2498 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2499 | PL_perlio_fd_refcnt = NULL; |
2500 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2501 | } |
694c95cf JH |
2502 | } |
2503 | ||
9e353e3b | 2504 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2505 | /* |
71200d45 | 2506 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2507 | */ |
9e353e3b | 2508 | |
14a5cf38 | 2509 | typedef struct { |
22569500 NIS |
2510 | struct _PerlIO base; /* The generic part */ |
2511 | int fd; /* UNIX like file descriptor */ | |
2512 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2513 | } PerlIOUnix; |
2514 | ||
6f9d8c32 | 2515 | int |
9e353e3b | 2516 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2517 | { |
14a5cf38 | 2518 | int oflags = -1; |
3b6c1aba | 2519 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2520 | mode++; |
2521 | switch (*mode) { | |
2522 | case 'r': | |
2523 | oflags = O_RDONLY; | |
2524 | if (*++mode == '+') { | |
2525 | oflags = O_RDWR; | |
2526 | mode++; | |
2527 | } | |
2528 | break; | |
2529 | ||
2530 | case 'w': | |
2531 | oflags = O_CREAT | O_TRUNC; | |
2532 | if (*++mode == '+') { | |
2533 | oflags |= O_RDWR; | |
2534 | mode++; | |
2535 | } | |
2536 | else | |
2537 | oflags |= O_WRONLY; | |
2538 | break; | |
2539 | ||
2540 | case 'a': | |
2541 | oflags = O_CREAT | O_APPEND; | |
2542 | if (*++mode == '+') { | |
2543 | oflags |= O_RDWR; | |
2544 | mode++; | |
2545 | } | |
2546 | else | |
2547 | oflags |= O_WRONLY; | |
2548 | break; | |
2549 | } | |
2550 | if (*mode == 'b') { | |
2551 | oflags |= O_BINARY; | |
2552 | oflags &= ~O_TEXT; | |
2553 | mode++; | |
2554 | } | |
2555 | else if (*mode == 't') { | |
2556 | oflags |= O_TEXT; | |
2557 | oflags &= ~O_BINARY; | |
2558 | mode++; | |
2559 | } | |
2560 | /* | |
71200d45 | 2561 | * Always open in binary mode |
14a5cf38 JH |
2562 | */ |
2563 | oflags |= O_BINARY; | |
2564 | if (*mode || oflags == -1) { | |
93189314 | 2565 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2566 | oflags = -1; |
2567 | } | |
2568 | return oflags; | |
9e353e3b NIS |
2569 | } |
2570 | ||
2571 | IV | |
f62ce20a | 2572 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2573 | { |
96a5add6 | 2574 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2575 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2576 | } |
2577 | ||
aa063c35 NIS |
2578 | static void |
2579 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2580 | { |
de009b76 | 2581 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2582 | #if defined(WIN32) |
aa063c35 NIS |
2583 | Stat_t st; |
2584 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2585 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2586 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2587 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2588 | } | |
aa063c35 NIS |
2589 | else { |
2590 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2591 | } | |
6caa5a9c NIS |
2592 | } |
2593 | #endif | |
aa063c35 NIS |
2594 | s->fd = fd; |
2595 | s->oflags = imode; | |
2596 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2597 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2598 | } |
2599 | ||
2600 | IV | |
2601 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2602 | { | |
2603 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2604 | if (*PerlIONext(f)) { |
4b069b44 | 2605 | /* We never call down so do any pending stuff now */ |
03c0554d | 2606 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2607 | /* |
71200d45 | 2608 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2609 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2610 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2611 | */ |
acbd16bf | 2612 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2613 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2614 | } |
2615 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2616 | |
14a5cf38 | 2617 | return code; |
4b803d04 NIS |
2618 | } |
2619 | ||
c2fcde81 JH |
2620 | IV |
2621 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2622 | { | |
de009b76 | 2623 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2624 | Off_t new_loc; |
96a5add6 | 2625 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2626 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2627 | #ifdef ESPIPE | |
2628 | SETERRNO(ESPIPE, LIB_INVARG); | |
2629 | #else | |
2630 | SETERRNO(EINVAL, LIB_INVARG); | |
2631 | #endif | |
2632 | return -1; | |
2633 | } | |
0723351e NC |
2634 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2635 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2636 | return -1; |
c2fcde81 JH |
2637 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2638 | return 0; | |
2639 | } | |
2640 | ||
9e353e3b | 2641 | PerlIO * |
14a5cf38 JH |
2642 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2643 | IV n, const char *mode, int fd, int imode, | |
2644 | int perm, PerlIO *f, int narg, SV **args) | |
2645 | { | |
d9dac8cd | 2646 | if (PerlIOValid(f)) { |
14a5cf38 | 2647 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2648 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2649 | } |
2650 | if (narg > 0) { | |
3b6c1aba | 2651 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2652 | mode++; |
2653 | else { | |
2654 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2655 | #ifdef VMS |
2656 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2657 | #else | |
14a5cf38 | 2658 | perm = 0666; |
5e2ce0f3 | 2659 | #endif |
14a5cf38 JH |
2660 | } |
2661 | if (imode != -1) { | |
e62f0680 | 2662 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2663 | fd = PerlLIO_open3(path, imode, perm); |
2664 | } | |
2665 | } | |
2666 | if (fd >= 0) { | |
3b6c1aba | 2667 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2668 | mode++; |
2669 | if (!f) { | |
2670 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2671 | } |
2672 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2673 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2674 | return NULL; | |
2675 | } | |
d9dac8cd | 2676 | } |
aa063c35 | 2677 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2678 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2679 | if (*mode == IoTYPE_APPEND) |
2680 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2681 | return f; |
2682 | } | |
2683 | else { | |
2684 | if (f) { | |
6f207bd3 | 2685 | NOOP; |
14a5cf38 | 2686 | /* |
71200d45 | 2687 | * FIXME: pop layers ??? |
14a5cf38 JH |
2688 | */ |
2689 | } | |
2690 | return NULL; | |
2691 | } | |
9e353e3b NIS |
2692 | } |
2693 | ||
71200d45 | 2694 | PerlIO * |
ecdeb87c | 2695 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2696 | { |
dcda55fc | 2697 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2698 | int fd = os->fd; |
ecdeb87c NIS |
2699 | if (flags & PERLIO_DUP_FD) { |
2700 | fd = PerlLIO_dup(fd); | |
2701 | } | |
22c96fc1 | 2702 | if (fd >= 0) { |
ecdeb87c | 2703 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2704 | if (f) { |
2705 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2706 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2707 | return f; |
2708 | } | |
71200d45 NIS |
2709 | } |
2710 | return NULL; | |
2711 | } | |
2712 | ||
2713 | ||
9e353e3b | 2714 | SSize_t |
f62ce20a | 2715 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2716 | { |
97aff369 | 2717 | dVAR; |
de009b76 | 2718 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2719 | #ifdef PERLIO_STD_SPECIAL |
2720 | if (fd == 0) | |
2721 | return PERLIO_STD_IN(fd, vbuf, count); | |
2722 | #endif | |
81428673 | 2723 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2724 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2725 | return 0; |
1fd8f4ce | 2726 | } |
14a5cf38 | 2727 | while (1) { |
b464bac0 | 2728 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2729 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2730 | if (len < 0) { |
2731 | if (errno != EAGAIN) { | |
2732 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2733 | } | |
2734 | } | |
2735 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2736 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2737 | SETERRNO(0,0); |
2738 | } | |
14a5cf38 JH |
2739 | return len; |
2740 | } | |
2741 | PERL_ASYNC_CHECK(); | |
2742 | } | |
b464bac0 | 2743 | /*NOTREACHED*/ |
9e353e3b NIS |
2744 | } |
2745 | ||
2746 | SSize_t | |
f62ce20a | 2747 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2748 | { |
97aff369 | 2749 | dVAR; |
de009b76 | 2750 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2751 | #ifdef PERLIO_STD_SPECIAL |
2752 | if (fd == 1 || fd == 2) | |
2753 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2754 | #endif | |
14a5cf38 | 2755 | while (1) { |
de009b76 | 2756 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2757 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2758 | if (len < 0) { |
2759 | if (errno != EAGAIN) { | |
2760 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2761 | } | |
2762 | } | |
14a5cf38 JH |
2763 | return len; |
2764 | } | |
2765 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2766 | } |
1b6737cc | 2767 | /*NOTREACHED*/ |
9e353e3b NIS |
2768 | } |
2769 | ||
9e353e3b | 2770 | Off_t |
f62ce20a | 2771 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2772 | { |
96a5add6 AL |
2773 | PERL_UNUSED_CONTEXT; |
2774 | ||
14a5cf38 | 2775 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2776 | } |
2777 | ||
2556f95e GF |
2778 | |
2779 | IV | |
2376d97d | 2780 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2781 | { |
97aff369 | 2782 | dVAR; |
de009b76 | 2783 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2784 | int code = 0; |
168d5872 NIS |
2785 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2786 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2787 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2788 | return 0; | |
22569500 | 2789 | } |
93a8090d NIS |
2790 | } |
2791 | else { | |
93189314 | 2792 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2793 | return -1; |
2794 | } | |
14a5cf38 JH |
2795 | while (PerlLIO_close(fd) != 0) { |
2796 | if (errno != EINTR) { | |
2797 | code = -1; | |
2798 | break; | |
2799 | } | |
2800 | PERL_ASYNC_CHECK(); | |
2801 | } | |
2802 | if (code == 0) { | |
2803 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2804 | } | |
2805 | return code; | |
9e353e3b NIS |
2806 | } |
2807 | ||
27da23d5 | 2808 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2809 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2810 | "unix", |
2811 | sizeof(PerlIOUnix), | |
2812 | PERLIO_K_RAW, | |
2813 | PerlIOUnix_pushed, | |
2376d97d | 2814 | PerlIOBase_popped, |
14a5cf38 | 2815 | PerlIOUnix_open, |
86e05cf2 | 2816 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2817 | NULL, |
2818 | PerlIOUnix_fileno, | |
71200d45 | 2819 | PerlIOUnix_dup, |
14a5cf38 JH |
2820 | PerlIOUnix_read, |
2821 | PerlIOBase_unread, | |
2822 | PerlIOUnix_write, | |
2823 | PerlIOUnix_seek, | |
2824 | PerlIOUnix_tell, | |
2825 | PerlIOUnix_close, | |
22569500 NIS |
2826 | PerlIOBase_noop_ok, /* flush */ |
2827 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2828 | PerlIOBase_eof, |
2829 | PerlIOBase_error, | |
2830 | PerlIOBase_clearerr, | |
2831 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2832 | NULL, /* get_base */ |
2833 | NULL, /* get_bufsiz */ | |
2834 | NULL, /* get_ptr */ | |
2835 | NULL, /* get_cnt */ | |
2836 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2837 | }; |
2838 | ||
2839 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2840 | /* |
71200d45 | 2841 | * stdio as a layer |
14a5cf38 | 2842 | */ |
9e353e3b | 2843 | |
313e59c8 NIS |
2844 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2845 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2846 | broken by the last second glibc 2.3 fix | |
2847 | */ | |
2848 | #define STDIO_BUFFER_WRITABLE | |
2849 | #endif | |
2850 | ||
2851 | ||
14a5cf38 JH |
2852 | typedef struct { |
2853 | struct _PerlIO base; | |
22569500 | 2854 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2855 | } PerlIOStdio; |
2856 | ||
2857 | IV | |
f62ce20a | 2858 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2859 | { |
96a5add6 AL |
2860 | PERL_UNUSED_CONTEXT; |
2861 | ||
c4420975 AL |
2862 | if (PerlIOValid(f)) { |
2863 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2864 | if (s) | |
2865 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2866 | } |
2867 | errno = EBADF; | |
2868 | return -1; | |
9e353e3b NIS |
2869 | } |
2870 | ||
766a733e | 2871 | char * |
14a5cf38 JH |
2872 | PerlIOStdio_mode(const char *mode, char *tmode) |
2873 | { | |
de009b76 | 2874 | char * const ret = tmode; |
a0625d38 SR |
2875 | if (mode) { |
2876 | while (*mode) { | |
2877 | *tmode++ = *mode++; | |
2878 | } | |
14a5cf38 | 2879 | } |
95005ad8 | 2880 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2881 | *tmode++ = 'b'; |
2882 | #endif | |
14a5cf38 JH |
2883 | *tmode = '\0'; |
2884 | return ret; | |
2885 | } | |
2886 | ||
4b803d04 | 2887 | IV |
2dc2558e | 2888 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2889 | { |
1fd8f4ce NIS |
2890 | PerlIO *n; |
2891 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2892 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2893 | if (toptab == tab) { |
2894 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2895 | PerlIO_pop(aTHX_ f); | |
2896 | return 0; | |
2897 | } else { | |
de009b76 | 2898 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2899 | char tmode[8]; |
2900 | FILE *stdio; | |
81428673 | 2901 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2902 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2903 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2904 | /* We never call down so do any pending stuff now */ | |
2905 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2906 | } |
1fd8f4ce NIS |
2907 | else { |
2908 | return -1; | |
2909 | } | |
2910 | } | |
14a5cf38 | 2911 | } |
2dc2558e | 2912 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2913 | } |
2914 | ||
22569500 | 2915 | |
9e353e3b | 2916 | PerlIO * |
4b069b44 | 2917 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2918 | { |
14a5cf38 JH |
2919 | dTHX; |
2920 | PerlIO *f = NULL; | |
2921 | if (stdio) { | |
22569500 | 2922 | PerlIOStdio *s; |
4b069b44 NIS |
2923 | if (!mode || !*mode) { |
2924 | /* We need to probe to see how we can open the stream | |
2925 | so start with read/write and then try write and read | |
2926 | we dup() so that we can fclose without loosing the fd. | |
2927 | ||
2928 | Note that the errno value set by a failing fdopen | |
2929 | varies between stdio implementations. | |
2930 | */ | |
de009b76 | 2931 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2932 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2933 | if (!f2) { |
a33cf58c | 2934 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2935 | } |
2936 | if (!f2) { | |
a33cf58c | 2937 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2938 | } |
2939 | if (!f2) { | |
2940 | /* Don't seem to be able to open */ | |
2941 | PerlLIO_close(fd); | |
2942 | return f; | |
2943 | } | |
2944 | fclose(f2); | |
22569500 | 2945 | } |
a0714e2c | 2946 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2947 | s = PerlIOSelf(f, PerlIOStdio); |
2948 | s->stdio = stdio; | |
c586124f | 2949 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2950 | } |
14a5cf38 JH |
2951 | } |
2952 | return f; | |
9e353e3b NIS |
2953 | } |
2954 | ||
2955 | PerlIO * | |
14a5cf38 JH |
2956 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2957 | IV n, const char *mode, int fd, int imode, | |
2958 | int perm, PerlIO *f, int narg, SV **args) | |
2959 | { | |
2960 | char tmode[8]; | |
d9dac8cd | 2961 | if (PerlIOValid(f)) { |
dcda55fc AL |
2962 | const char * const path = SvPV_nolen_const(*args); |
2963 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2964 | FILE *stdio; |
2965 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2966 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2967 | s->stdio); |
2968 | if (!s->stdio) | |
2969 | return NULL; | |
2970 | s->stdio = stdio; | |
1751d015 | 2971 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2972 | return f; |
2973 | } | |
2974 | else { | |
2975 | if (narg > 0) { | |
dcda55fc | 2976 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2977 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2978 | mode++; |
2979 | fd = PerlLIO_open3(path, imode, perm); | |
2980 | } | |
2981 | else { | |
95005ad8 GH |
2982 | FILE *stdio; |
2983 | bool appended = FALSE; | |
2984 | #ifdef __CYGWIN__ | |
2985 | /* Cygwin wants its 'b' early. */ | |
2986 | appended = TRUE; | |
2987 | mode = PerlIOStdio_mode(mode, tmode); | |
2988 | #endif | |
2989 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2990 | if (stdio) { |
6f0313ac JH |
2991 | if (!f) { |
2992 | f = PerlIO_allocate(aTHX); | |
2993 | } | |
95005ad8 GH |
2994 | if (!appended) |
2995 | mode = PerlIOStdio_mode(mode, tmode); | |
2996 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2997 | if (f) { | |
0f0f9e2b JH |
2998 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2999 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3000 | } else { | |
3001 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3002 | } |
3003 | return f; | |
3004 | } | |
3005 | else { | |
3006 | return NULL; | |
3007 | } | |
14a5cf38 JH |
3008 | } |
3009 | } | |
3010 | if (fd >= 0) { | |
3011 | FILE *stdio = NULL; | |
3012 | int init = 0; | |
3b6c1aba | 3013 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3014 | init = 1; |
3015 | mode++; | |
3016 | } | |
3017 | if (init) { | |
3018 | switch (fd) { | |
3019 | case 0: | |
3020 | stdio = PerlSIO_stdin; | |
3021 | break; | |
3022 | case 1: | |
3023 | stdio = PerlSIO_stdout; | |
3024 | break; | |
3025 | case 2: | |
3026 | stdio = PerlSIO_stderr; | |
3027 | break; | |
3028 | } | |
3029 | } | |
3030 | else { | |
3031 | stdio = PerlSIO_fdopen(fd, mode = | |
3032 | PerlIOStdio_mode(mode, tmode)); | |
3033 | } | |
3034 | if (stdio) { | |
d9dac8cd NIS |
3035 | if (!f) { |
3036 | f = PerlIO_allocate(aTHX); | |
3037 | } | |
a33cf58c | 3038 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3039 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3040 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3041 | } |
14a5cf38 JH |
3042 | return f; |
3043 | } | |
3044 | } | |
3045 | } | |
ee518936 | 3046 | return NULL; |
9e353e3b NIS |
3047 | } |
3048 | ||
1751d015 | 3049 | PerlIO * |
ecdeb87c | 3050 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3051 | { |
3052 | /* This assumes no layers underneath - which is what | |
3053 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3054 | */ | |
ecdeb87c | 3055 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3056 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3057 | const int fd = fileno(stdio); |
9217ff3f | 3058 | char mode[8]; |
ecdeb87c | 3059 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3060 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3061 | if (dfd >= 0) { |
3062 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3063 | goto set_this; | |
ecdeb87c NIS |
3064 | } |
3065 | else { | |
6f207bd3 | 3066 | NOOP; |
ecdeb87c NIS |
3067 | /* FIXME: To avoid messy error recovery if dup fails |
3068 | re-use the existing stdio as though flag was not set | |
3069 | */ | |
3070 | } | |
3071 | } | |
9217ff3f NIS |
3072 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3073 | set_this: | |
694c95cf | 3074 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3075 | if(stdio) { |
3076 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3077 | } | |
1751d015 NIS |
3078 | } |
3079 | return f; | |
3080 | } | |
3081 | ||
0d7a5398 NIS |
3082 | static int |
3083 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3084 | { | |
96a5add6 AL |
3085 | PERL_UNUSED_CONTEXT; |
3086 | ||
0d7a5398 | 3087 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3088 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3089 | */ |
ef8eacb8 AT |
3090 | # if defined(__UCLIBC__) |
3091 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3092 | f->__filedes = -1; | |
3093 | return 1; | |
3094 | # elif defined(__GLIBC__) | |
0d7a5398 | 3095 | /* There may be a better way for GLIBC: |
37725cdc | 3096 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3097 | */ |
3098 | f->_fileno = -1; | |
3099 | return 1; | |
3100 | # elif defined(__sun__) | |
f5992bc4 | 3101 | PERL_UNUSED_ARG(f); |
cfedb851 | 3102 | return 0; |
0d7a5398 NIS |
3103 | # elif defined(__hpux) |
3104 | f->__fileH = 0xff; | |
3105 | f->__fileL = 0xff; | |
3106 | return 1; | |
9837d373 | 3107 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3108 | your platform does not have special entry try this one. |
9837d373 NIS |
3109 | [For OSF only have confirmation for Tru64 (alpha) |
3110 | but assume other OSFs will be similar.] | |
37725cdc | 3111 | */ |
9837d373 | 3112 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3113 | f->_file = -1; |
3114 | return 1; | |
3115 | # elif defined(__FreeBSD__) | |
3116 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3117 | - we could insert a dummy func in the _close function entry |
3118 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3119 | */ |
3120 | f->_file = -1; | |
0c49ea6a SU |
3121 | return 1; |
3122 | # elif defined(__OpenBSD__) | |
3123 | /* There may be a better way on OpenBSD: | |
3124 | - we could insert a dummy func in the _close function entry | |
3125 | f->_close = (int (*)(void *)) dummy_close; | |
3126 | */ | |
3127 | f->_file = -1; | |
0d7a5398 | 3128 | return 1; |
59ad941d IZ |
3129 | # elif defined(__EMX__) |
3130 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3131 | f->_handle = -1; | |
3132 | return 1; | |
0d7a5398 NIS |
3133 | # elif defined(__CYGWIN__) |
3134 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3135 | - we could insert a dummy func in the _close function entry |
3136 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3137 | */ |
3138 | f->_file = -1; | |
3139 | return 1; | |
3140 | # elif defined(WIN32) | |
3141 | # if defined(__BORLANDC__) | |
3142 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3143 | # elif defined(UNDER_CE) |
3144 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3145 | structure at all | |
3146 | */ | |
0d7a5398 NIS |
3147 | # else |
3148 | f->_file = -1; | |
3149 | # endif | |
3150 | return 1; | |
3151 | # else | |
3152 | #if 0 | |
37725cdc | 3153 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3154 | (which isn't thread safe) instead |
37725cdc | 3155 | */ |
0d7a5398 NIS |
3156 | # error "Don't know how to set FILE.fileno on your platform" |
3157 | #endif | |
8772537c | 3158 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3159 | return 0; |
3160 | # endif | |
3161 | } | |
3162 | ||
1751d015 | 3163 | IV |
f62ce20a | 3164 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3165 | { |
c4420975 | 3166 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3167 | if (!stdio) { |
3168 | errno = EBADF; | |
3169 | return -1; | |
3170 | } | |
9217ff3f | 3171 | else { |
de009b76 | 3172 | const int fd = fileno(stdio); |
0d7a5398 | 3173 | int invalidate = 0; |
bbfd922f | 3174 | IV result = 0; |
1d791a44 | 3175 | int dupfd = -1; |
4ee39169 | 3176 | dSAVEDERRNO; |
a2e578da MHM |
3177 | #ifdef USE_ITHREADS |
3178 | dVAR; | |
3179 | #endif | |
0d7a5398 | 3180 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3181 | /* Socks lib overrides close() but stdio isn't linked to |
3182 | that library (though we are) - so we must call close() | |
3183 | on sockets on stdio's behalf. | |
3184 | */ | |
0d7a5398 NIS |
3185 | int optval; |
3186 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3187 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3188 | invalidate = 1; |
0d7a5398 | 3189 | #endif |
d8723f43 NC |
3190 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3191 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3192 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3193 | trying to close an already closed handle which somehow it still has | |
3194 | a reference to. (via.xs, I'm looking at you). */ | |
3195 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3196 | /* File descriptor still in use */ | |
0d7a5398 | 3197 | invalidate = 1; |
d8723f43 | 3198 | } |
0d7a5398 | 3199 | if (invalidate) { |
6b4ce6c8 AL |
3200 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3201 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3202 | return 0; | |
3203 | if (stdio == stdout || stdio == stderr) | |
3204 | return PerlIO_flush(f); | |
37725cdc NIS |
3205 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3206 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3207 | fileno slot of the FILE * | |
3208 | */ | |
bbfd922f | 3209 | result = PerlIO_flush(f); |
4ee39169 | 3210 | SAVE_ERRNO; |
6b4ce6c8 | 3211 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3212 | if (!invalidate) { |
9bab90c0 NC |
3213 | #ifdef USE_ITHREADS |
3214 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3215 | /* Right. We need a mutex here because for a brief while we |
3216 | will have the situation that fd is actually closed. Hence if | |
3217 | a second thread were to get into this block, its dup() would | |
3218 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3219 | Then if we get to the dup2() first, we blat the fd back |
3220 | (messing up its temporary as a side effect) only for it to | |
3221 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3222 | ||
3223 | /* There is, of course, a race condition, that any other thread | |
3224 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3225 | for the duration of this little manoeuvrer. Perhaps we |
3226 | should hold an IO mutex for the duration of every IO | |
3227 | operation if we know that invalidate doesn't work on this | |
3228 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3229 | |
3230 | Except that correctness trumps speed. | |
3231 | Advice from klortho #11912. */ | |
3232 | #endif | |
6b4ce6c8 | 3233 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3234 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3235 | if (dupfd < 0) { |
3236 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3237 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3238 | recover from here, or if closing this particular FILE * | |
3239 | is a good idea now. */ | |
3240 | } | |
3241 | #endif | |
3242 | } | |
94ccb807 JH |
3243 | } else { |
3244 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3245 | } |
0d7a5398 | 3246 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3247 | /* We treat error from stdio as success if we invalidated |
3248 | errno may NOT be expected EBADF | |
e8529473 NIS |
3249 | */ |
3250 | if (invalidate && result != 0) { | |
4ee39169 | 3251 | RESTORE_ERRNO; |
0d7a5398 | 3252 | result = 0; |
37725cdc | 3253 | } |
6b4ce6c8 AL |
3254 | #ifdef SOCKS5_VERSION_NAME |
3255 | /* in SOCKS' case, let close() determine return value */ | |
3256 | result = close(fd); | |
3257 | #endif | |
1d791a44 | 3258 | if (dupfd >= 0) { |
0d7a5398 | 3259 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3260 | PerlLIO_close(dupfd); |
711e8db2 | 3261 | #ifdef USE_ITHREADS |
9bab90c0 | 3262 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3263 | #endif |
9217ff3f NIS |
3264 | } |
3265 | return result; | |
37725cdc | 3266 | } |
1751d015 NIS |
3267 | } |
3268 | ||
9e353e3b | 3269 | SSize_t |
f62ce20a | 3270 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3271 | { |
97aff369 | 3272 | dVAR; |
c4420975 | 3273 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3274 | SSize_t got = 0; |
4d948241 NIS |
3275 | for (;;) { |
3276 | if (count == 1) { | |
3277 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3278 | /* | |
3279 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3280 | * stdio does not do that for fread() | |
3281 | */ | |
de009b76 | 3282 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3283 | if (ch != EOF) { |
3284 | *buf = ch; | |
3285 | got = 1; | |
3286 | } | |
14a5cf38 | 3287 | } |
4d948241 NIS |
3288 | else |
3289 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3290 | if (got == 0 && PerlSIO_ferror(s)) |
3291 | got = -1; | |
42a7a32f | 3292 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3293 | break; |
3294 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3295 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3296 | } |
14a5cf38 | 3297 | return got; |
9e353e3b NIS |
3298 | } |
3299 | ||
3300 | SSize_t | |
f62ce20a | 3301 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3302 | { |
14a5cf38 | 3303 | SSize_t unread = 0; |
c4420975 | 3304 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3305 | |
313e59c8 | 3306 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3307 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3308 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3309 | STDCHAR *base = PerlIO_get_base(f); | |
3310 | SSize_t cnt = PerlIO_get_cnt(f); | |
3311 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3312 | SSize_t avail = ptr - base; | |
3313 | if (avail > 0) { | |
3314 | if (avail > count) { | |
3315 | avail = count; | |
3316 | } | |
3317 | ptr -= avail; | |
3318 | Move(buf-avail,ptr,avail,STDCHAR); | |
3319 | count -= avail; | |
3320 | unread += avail; | |
3321 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3322 | if (PerlSIO_feof(s) && unread >= 0) |
3323 | PerlSIO_clearerr(s); | |
3324 | } | |
3325 | } | |
313e59c8 NIS |
3326 | else |
3327 | #endif | |
3328 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3329 | /* We can get pointer to buffer but not its base |
3330 | Do ungetc() but check chars are ending up in the | |
3331 | buffer | |
3332 | */ | |
3333 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3334 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3335 | while (count > 0) { | |
de009b76 | 3336 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3337 | if (ungetc(ch,s) != ch) { |
3338 | /* ungetc did not work */ | |
3339 | break; | |
3340 | } | |
3341 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3342 | /* Did not change pointer as expected */ | |
3343 | fgetc(s); /* get char back again */ | |
3344 | break; | |
3345 | } | |
3346 | /* It worked ! */ | |
3347 | count--; | |
3348 | unread++; | |
93679785 NIS |
3349 | } |
3350 | } | |
3351 | ||
3352 | if (count > 0) { | |
3353 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3354 | } |
3355 | return unread; | |
9e353e3b NIS |
3356 | } |
3357 | ||
3358 | SSize_t | |
f62ce20a | 3359 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3360 | { |
97aff369 | 3361 | dVAR; |
4d948241 NIS |
3362 | SSize_t got; |
3363 | for (;;) { | |
3364 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3365 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3366 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3367 | break; |
3368 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3369 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3370 | } |
3371 | return got; | |
9e353e3b NIS |
3372 | } |
3373 | ||
94a175e1 | 3374 | IV |
f62ce20a | 3375 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3376 | { |
c4420975 | 3377 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3378 | PERL_UNUSED_CONTEXT; |
3379 | ||
94a175e1 | 3380 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3381 | } |
3382 | ||
3383 | Off_t | |
f62ce20a | 3384 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3385 | { |
c4420975 | 3386 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3387 | PERL_UNUSED_CONTEXT; |
3388 | ||
94a175e1 | 3389 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3390 | } |
3391 | ||
3392 | IV | |
f62ce20a | 3393 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3394 | { |
c4420975 | 3395 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3396 | PERL_UNUSED_CONTEXT; |
3397 | ||
14a5cf38 JH |
3398 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3399 | return PerlSIO_fflush(stdio); | |
3400 | } | |
3401 | else { | |
6f207bd3 | 3402 | NOOP; |
88b61e10 | 3403 | #if 0 |
14a5cf38 JH |
3404 | /* |
3405 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3406 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3407 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3408 | * layer read-to-read |
14a5cf38 JH |
3409 | */ |
3410 | /* | |
71200d45 | 3411 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3412 | */ |
4ee39169 | 3413 | dSAVE_ERRNO; |
14a5cf38 | 3414 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3415 | RESTORE_ERRNO; |
88b61e10 | 3416 | #endif |
14a5cf38 JH |
3417 | } |
3418 | return 0; | |
9e353e3b NIS |
3419 | } |
3420 | ||
3421 | IV | |
f62ce20a | 3422 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3423 | { |
96a5add6 AL |
3424 | PERL_UNUSED_CONTEXT; |
3425 | ||
14a5cf38 | 3426 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3427 | } |
3428 | ||
3429 | IV | |
f62ce20a | 3430 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3431 | { |
96a5add6 AL |
3432 | PERL_UNUSED_CONTEXT; |
3433 | ||
263df5f1 | 3434 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3435 | } |
3436 | ||
3437 | void | |
f62ce20a | 3438 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3439 | { |
96a5add6 AL |
3440 | PERL_UNUSED_CONTEXT; |
3441 | ||
14a5cf38 | 3442 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3443 | } |
3444 | ||
3445 | void | |
f62ce20a | 3446 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3447 | { |
96a5add6 AL |
3448 | PERL_UNUSED_CONTEXT; |
3449 | ||
9e353e3b | 3450 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3451 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3452 | #else |
bd61b366 | 3453 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3454 | #endif |
3455 | } | |
3456 | ||
3457 | #ifdef FILE_base | |
3458 | STDCHAR * | |
f62ce20a | 3459 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3460 | { |
c4420975 | 3461 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3462 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3463 | } |
3464 | ||
3465 | Size_t | |
f62ce20a | 3466 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3467 | { |
c4420975 | 3468 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3469 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3470 | } |
3471 | #endif | |
3472 | ||
3473 | #ifdef USE_STDIO_PTR | |
3474 | STDCHAR * | |
f62ce20a | 3475 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3476 | { |
c4420975 | 3477 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3478 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3479 | } |
3480 | ||
3481 | SSize_t | |
f62ce20a | 3482 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3483 | { |
c4420975 | 3484 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3485 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3486 | } |
3487 | ||
3488 | void | |
f62ce20a | 3489 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3490 | { |
c4420975 | 3491 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3492 | if (ptr != NULL) { |
9e353e3b | 3493 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3494 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3495 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3496 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3497 | #endif |
3498 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3499 | /* |
71200d45 | 3500 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3501 | */ |
3502 | return; | |
9e353e3b | 3503 | #endif |
22569500 | 3504 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3505 | PerlProc_abort(); |
22569500 | 3506 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3507 | } |
3508 | /* | |
71200d45 | 3509 | * Now (or only) set cnt |
14a5cf38 | 3510 | */ |
9e353e3b | 3511 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3512 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3513 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3514 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3515 | PerlSIO_set_ptr(stdio, |
3516 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3517 | cnt)); | |
22569500 | 3518 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3519 | PerlProc_abort(); |
22569500 NIS |
3520 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3521 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3522 | } |
3523 | ||
93679785 | 3524 | |
9e353e3b NIS |
3525 | #endif |
3526 | ||
93679785 NIS |
3527 | IV |
3528 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3529 | { | |
c4420975 | 3530 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3531 | int c; |
96a5add6 AL |
3532 | PERL_UNUSED_CONTEXT; |
3533 | ||
93679785 NIS |
3534 | /* |
3535 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3536 | */ | |
3537 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3538 | if (PerlSIO_fflush(stdio) != 0) | |
3539 | return EOF; | |
3540 | } | |
f3be3723 BL |
3541 | for (;;) { |
3542 | c = PerlSIO_fgetc(stdio); | |
3543 | if (c != EOF) | |
3544 | break; | |
3545 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3546 | return EOF; | |
3547 | PERL_ASYNC_CHECK(); | |
3548 | SETERRNO(0,0); | |
3549 | } | |
93679785 NIS |
3550 | |
3551 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3552 | |
3553 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3554 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3555 | /* Fake ungetc() to the real buffer in case system's ungetc |
3556 | goes elsewhere | |
3557 | */ | |
3558 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3559 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3560 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3561 | if (ptr == base+1) { | |
3562 | *--ptr = (STDCHAR) c; | |
3563 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3564 | if (PerlSIO_feof(stdio)) | |
3565 | PerlSIO_clearerr(stdio); | |
3566 | return 0; | |
3567 | } | |
3568 | } | |
313e59c8 NIS |
3569 | else |
3570 | #endif | |
3571 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3572 | STDCHAR ch = c; |
3573 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3574 | return 0; | |
3575 | } | |
3576 | } | |
93679785 NIS |
3577 | #endif |
3578 | ||
3579 | #if defined(VMS) | |
3580 | /* An ungetc()d char is handled separately from the regular | |
3581 | * buffer, so we stuff it in the buffer ourselves. | |
3582 | * Should never get called as should hit code above | |
3583 | */ | |
bad9695d NIS |
3584 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3585 | (*stdio)->_cnt++; | |
93679785 NIS |
3586 | #else |
3587 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3588 | using ungetc(). |
93679785 NIS |
3589 | */ |
3590 | if (PerlSIO_ungetc(c, stdio) != c) | |
3591 | return EOF; | |
3592 | #endif | |
3593 | return 0; | |
3594 | } | |
3595 | ||
3596 | ||
3597 | ||
27da23d5 | 3598 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3599 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3600 | "stdio", |
3601 | sizeof(PerlIOStdio), | |
86e05cf2 | 3602 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3603 | PerlIOStdio_pushed, |
2376d97d | 3604 | PerlIOBase_popped, |
14a5cf38 | 3605 | PerlIOStdio_open, |
86e05cf2 | 3606 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3607 | NULL, |
3608 | PerlIOStdio_fileno, | |
71200d45 | 3609 | PerlIOStdio_dup, |
14a5cf38 JH |
3610 | PerlIOStdio_read, |
3611 | PerlIOStdio_unread, | |
3612 | PerlIOStdio_write, | |
3613 | PerlIOStdio_seek, | |
3614 | PerlIOStdio_tell, | |
3615 | PerlIOStdio_close, | |
3616 | PerlIOStdio_flush, | |
3617 | PerlIOStdio_fill, | |
3618 | PerlIOStdio_eof, | |
3619 | PerlIOStdio_error, | |
3620 | PerlIOStdio_clearerr, | |
3621 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3622 | #ifdef FILE_base |
14a5cf38 JH |
3623 | PerlIOStdio_get_base, |
3624 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3625 | #else |
14a5cf38 JH |
3626 | NULL, |
3627 | NULL, | |
9e353e3b NIS |
3628 | #endif |
3629 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3630 | PerlIOStdio_get_ptr, |
3631 | PerlIOStdio_get_cnt, | |
15b61c98 | 3632 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3633 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3634 | # else |
3635 | NULL, | |
3636 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3637 | #else | |
3638 | NULL, | |
14a5cf38 JH |
3639 | NULL, |
3640 | NULL, | |
15b61c98 | 3641 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3642 | }; |
3643 | ||
b9d6bf13 JH |
3644 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3645 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3646 | FILE * |
81428673 | 3647 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3648 | { |
e87a358a | 3649 | dTHX; |
81428673 NIS |
3650 | FILE *stdio = NULL; |
3651 | if (PerlIOValid(f)) { | |
3652 | char buf[8]; | |
3653 | PerlIO_flush(f); | |
3654 | if (!mode || !*mode) { | |
3655 | mode = PerlIO_modestr(f, buf); | |
3656 | } | |
3657 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3658 | if (stdio) { | |
3659 | PerlIOl *l = *f; | |
9f75cc58 | 3660 | PerlIO *f2; |
81428673 NIS |
3661 | /* De-link any lower layers so new :stdio sticks */ |
3662 | *f = NULL; | |
a0714e2c | 3663 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3664 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3665 | s->stdio = stdio; |
6b54a403 | 3666 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3667 | /* Link previous lower layers under new one */ |
3668 | *PerlIONext(f) = l; | |
3669 | } | |
3670 | else { | |
3671 | /* restore layers list */ | |
3672 | *f = l; | |
3673 | } | |
a33cf58c | 3674 | } |
14a5cf38 JH |
3675 | } |
3676 | return stdio; | |
9e353e3b NIS |
3677 | } |
3678 | ||
81428673 | 3679 | |
9e353e3b NIS |
3680 | FILE * |
3681 | PerlIO_findFILE(PerlIO *f) | |
3682 | { | |
14a5cf38 | 3683 | PerlIOl *l = *f; |
bbbc33d0 | 3684 | FILE *stdio; |
14a5cf38 JH |
3685 | while (l) { |
3686 | if (l->tab == &PerlIO_stdio) { | |
3687 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3688 | return s->stdio; | |
3689 | } | |
3690 | l = *PerlIONext(&l); | |
f7e7eb72 | 3691 | } |
4b069b44 | 3692 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3693 | /* However, we're not really exporting a FILE * to someone else (who |
3694 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
3695 | So we need to undo its refernce count increase on the underlying file | |
3696 | descriptor. We have to do this, because if the loop above returns you | |
3697 | the FILE *, then *it* didn't increase any reference count. So there's | |
3698 | only one way to be consistent. */ | |
3699 | stdio = PerlIO_exportFILE(f, NULL); | |
3700 | if (stdio) { | |
3701 | const int fd = fileno(stdio); | |
3702 | if (fd >= 0) | |
3703 | PerlIOUnix_refcnt_dec(fd); | |
3704 | } | |
3705 | return stdio; | |
9e353e3b NIS |
3706 | } |
3707 | ||
b9d6bf13 | 3708 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3709 | void |
3710 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3711 | { | |
27da23d5 | 3712 | dVAR; |
22569500 NIS |
3713 | PerlIOl *l; |
3714 | while ((l = *p)) { | |
3715 | if (l->tab == &PerlIO_stdio) { | |
3716 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3717 | if (s->stdio == f) { | |
3718 | dTHX; | |
6b54a403 NC |
3719 | const int fd = fileno(f); |
3720 | if (fd >= 0) | |
3721 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3722 | PerlIO_pop(aTHX_ p); |
3723 | return; | |
3724 | } | |
3725 | } | |
3726 | p = PerlIONext(p); | |
3727 | } | |
3728 | return; | |
9e353e3b NIS |
3729 | } |
3730 | ||
3731 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3732 | /* |
71200d45 | 3733 | * perlio buffer layer |
14a5cf38 | 3734 | */ |
9e353e3b | 3735 | |
5e2ab84b | 3736 | IV |
2dc2558e | 3737 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3738 | { |
14a5cf38 | 3739 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3740 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3741 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3742 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3743 | } | |
4b069b44 | 3744 | if (*PerlIONext(f)) { |
de009b76 | 3745 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3746 | if (posn != (Off_t) - 1) { |
3747 | b->posn = posn; | |
3748 | } | |
14a5cf38 | 3749 | } |
2dc2558e | 3750 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3751 | } |
3752 | ||
9e353e3b | 3753 | PerlIO * |
14a5cf38 JH |
3754 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3755 | IV n, const char *mode, int fd, int imode, int perm, | |
3756 | PerlIO *f, int narg, SV **args) | |
3757 | { | |
04892f78 | 3758 | if (PerlIOValid(f)) { |
14a5cf38 | 3759 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3760 | PerlIO_funcs *tab = |
3761 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3762 | if (tab && tab->Open) | |
3763 | next = | |
3764 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3765 | next, narg, args); | |
2dc2558e | 3766 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3767 | return NULL; |
3768 | } | |
3769 | } | |
3770 | else { | |
04892f78 | 3771 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3772 | int init = 0; |
3b6c1aba | 3773 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3774 | init = 1; |
3775 | /* | |
71200d45 | 3776 | * mode++; |
14a5cf38 JH |
3777 | */ |
3778 | } | |
67363c0d JH |
3779 | if (tab && tab->Open) |
3780 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3781 | f, narg, args); | |
3782 | else | |
3783 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3784 | if (f) { |
22569500 | 3785 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3786 | /* |
3787 | * if push fails during open, open fails. close will pop us. | |
3788 | */ | |
3789 | PerlIO_close (f); | |
3790 | return NULL; | |
3791 | } else { | |
3792 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3793 | if (init && fd == 2) { |
3794 | /* | |
3795 | * Initial stderr is unbuffered | |
3796 | */ | |
3797 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3798 | } | |
23b84778 IZ |
3799 | #ifdef PERLIO_USING_CRLF |
3800 | # ifdef PERLIO_IS_BINMODE_FD | |
3801 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3802 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3803 | else |
3804 | # endif | |
3805 | /* | |
3806 | * do something about failing setmode()? --jhi | |
3807 | */ | |
3808 | PerlLIO_setmode(fd, O_BINARY); | |
3809 | #endif | |
8c8488cd CB |
3810 | #ifdef VMS |
3811 | #include <rms.h> | |
3812 | /* Enable line buffering with record-oriented regular files | |
3813 | * so we don't introduce an extraneous record boundary when | |
3814 | * the buffer fills up. | |
3815 | */ | |
3816 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3817 | Stat_t st; | |
3818 | if (PerlLIO_fstat(fd, &st) == 0 | |
3819 | && S_ISREG(st.st_mode) | |
3820 | && (st.st_fab_rfm == FAB$C_VAR | |
3821 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3822 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3823 | } | |
3824 | } | |
3825 | #endif | |
14a5cf38 JH |
3826 | } |
3827 | } | |
ee518936 | 3828 | } |
14a5cf38 | 3829 | return f; |
9e353e3b NIS |
3830 | } |
3831 | ||
14a5cf38 JH |
3832 | /* |
3833 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3834 | * read or write state. For write state, we put the postponed data through |
3835 | * the next layers. For read state, we seek() the next layers to the | |
3836 | * offset given by current position in the buffer, and discard the buffer | |
3837 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3838 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3839 | */ |
9e353e3b | 3840 | IV |
f62ce20a | 3841 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3842 | { |
dcda55fc | 3843 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3844 | int code = 0; |
04892f78 | 3845 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3846 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3847 | /* | |
71200d45 | 3848 | * write() the buffer |
14a5cf38 | 3849 | */ |
de009b76 AL |
3850 | const STDCHAR *buf = b->buf; |
3851 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3852 | while (p < b->ptr) { |
3853 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3854 | if (count > 0) { | |
3855 | p += count; | |
3856 | } | |
3857 | else if (count < 0 || PerlIO_error(n)) { | |
3858 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3859 | code = -1; | |
3860 | break; | |
3861 | } | |
3862 | } | |
3863 | b->posn += (p - buf); | |
3864 | } | |
3865 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3866 | STDCHAR *buf = PerlIO_get_base(f); | |
3867 | /* | |
71200d45 | 3868 | * Note position change |
14a5cf38 JH |
3869 | */ |
3870 | b->posn += (b->ptr - buf); | |
3871 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3872 | /* We did not consume all of it - try and seek downstream to |
3873 | our logical position | |
14a5cf38 | 3874 | */ |
4b069b44 | 3875 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3876 | /* Reload n as some layers may pop themselves on seek */ |
3877 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3878 | } |
ba5c3fe9 | 3879 | else { |
4b069b44 NIS |
3880 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3881 | data is lost for good - so return saying "ok" having undone | |
3882 | the position adjust | |
3883 | */ | |
3884 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3885 | return code; |
3886 | } | |
14a5cf38 JH |
3887 | } |
3888 | } | |
3889 | b->ptr = b->end = b->buf; | |
3890 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3891 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3892 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3893 | code = -1; |
3894 | return code; | |
6f9d8c32 NIS |
3895 | } |
3896 | ||
93c2c2ec IZ |
3897 | /* This discards the content of the buffer after b->ptr, and rereads |
3898 | * the buffer from the position off in the layer downstream; here off | |
3899 | * is at offset corresponding to b->ptr - b->buf. | |
3900 | */ | |
06da4f11 | 3901 | IV |
f62ce20a | 3902 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3903 | { |
dcda55fc | 3904 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3905 | PerlIO *n = PerlIONext(f); |
3906 | SSize_t avail; | |
3907 | /* | |
4b069b44 NIS |
3908 | * Down-stream flush is defined not to loose read data so is harmless. |
3909 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3910 | */ |
93c2c2ec | 3911 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3912 | return -1; |
3913 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3914 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3915 | |
3916 | if (!b->buf) | |
22569500 | 3917 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3918 | |
0f0eef27 | 3919 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3920 | |
14a5cf38 | 3921 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3922 | |
3923 | if (!PerlIOValid(n)) { | |
3924 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3925 | return -1; | |
3926 | } | |
3927 | ||
14a5cf38 JH |
3928 | if (PerlIO_fast_gets(n)) { |
3929 | /* | |
04892f78 | 3930 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3931 | * ->Read() because that will loop till it gets what we asked for |
3932 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3933 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3934 | */ |
3935 | avail = PerlIO_get_cnt(n); | |
3936 | if (avail <= 0) { | |
3937 | avail = PerlIO_fill(n); | |
3938 | if (avail == 0) | |
3939 | avail = PerlIO_get_cnt(n); | |
3940 | else { | |
3941 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3942 | avail = 0; | |
3943 | } | |
3944 | } | |
3945 | if (avail > 0) { | |
3946 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3947 | const SSize_t cnt = avail; |
eb160463 | 3948 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3949 | avail = b->bufsiz; |
3950 | Copy(ptr, b->buf, avail, STDCHAR); | |
3951 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3952 | } | |
3953 | } | |
3954 | else { | |
3955 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3956 | } | |
3957 | if (avail <= 0) { | |
3958 | if (avail == 0) | |
3959 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3960 | else | |
3961 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3962 | return -1; | |
3963 | } | |
3964 | b->end = b->buf + avail; | |
3965 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3966 | return 0; | |
06da4f11 NIS |
3967 | } |
3968 | ||
6f9d8c32 | 3969 | SSize_t |
f62ce20a | 3970 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3971 | { |
04892f78 | 3972 | if (PerlIOValid(f)) { |
dcda55fc | 3973 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3974 | if (!b->ptr) |
3975 | PerlIO_get_base(f); | |
f62ce20a | 3976 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3977 | } |
3978 | return 0; | |
6f9d8c32 NIS |
3979 | } |
3980 | ||
9e353e3b | 3981 | SSize_t |
f62ce20a | 3982 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3983 | { |
14a5cf38 | 3984 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3985 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3986 | SSize_t unread = 0; |
3987 | SSize_t avail; | |
3988 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3989 | PerlIO_flush(f); | |
3990 | if (!b->buf) | |
3991 | PerlIO_get_base(f); | |
3992 | if (b->buf) { | |
3993 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3994 | /* | |
3995 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3996 | * which have been read back to buffer start |
14a5cf38 JH |
3997 | */ |
3998 | avail = (b->ptr - b->buf); | |
3999 | } | |
4000 | else { | |
4001 | /* | |
4002 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4003 | * unread |
14a5cf38 JH |
4004 | */ |
4005 | avail = b->bufsiz; | |
4006 | b->end = b->buf + avail; | |
4007 | b->ptr = b->end; | |
4008 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4009 | /* | |
71200d45 | 4010 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4011 | */ |
4012 | b->posn -= b->bufsiz; | |
4013 | } | |
4014 | if (avail > (SSize_t) count) { | |
4015 | /* | |
71200d45 | 4016 | * If we have space for more than count, just move count |
14a5cf38 JH |
4017 | */ |
4018 | avail = count; | |
4019 | } | |
4020 | if (avail > 0) { | |
4021 | b->ptr -= avail; | |
4022 | buf -= avail; | |
4023 | /* | |
4024 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4025 | * there |
14a5cf38 JH |
4026 | */ |
4027 | if (buf != b->ptr) { | |
4028 | Copy(buf, b->ptr, avail, STDCHAR); | |
4029 | } | |
4030 | count -= avail; | |
4031 | unread += avail; | |
4032 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4033 | } | |
4034 | } | |
93679785 NIS |
4035 | if (count > 0) { |
4036 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4037 | } | |
14a5cf38 | 4038 | return unread; |
760ac839 LW |
4039 | } |
4040 | ||
9e353e3b | 4041 | SSize_t |
f62ce20a | 4042 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4043 | { |
de009b76 | 4044 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4045 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4046 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4047 | Size_t written = 0; |
4048 | if (!b->buf) | |
4049 | PerlIO_get_base(f); | |
4050 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4051 | return 0; | |
0678cb22 NIS |
4052 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4053 | if (PerlIO_flush(f) != 0) { | |
4054 | return 0; | |
4055 | } | |
4056 | } | |
ee56a6b9 CS |
4057 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4058 | flushptr = buf + count; | |
4059 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4060 | --flushptr; | |
4061 | } | |
14a5cf38 JH |
4062 | while (count > 0) { |
4063 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
4064 | if ((SSize_t) count < avail) | |
4065 | avail = count; | |
ee56a6b9 CS |
4066 | if (flushptr > buf && flushptr <= buf + avail) |
4067 | avail = flushptr - buf; | |
14a5cf38 | 4068 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4069 | if (avail) { |
4070 | Copy(buf, b->ptr, avail, STDCHAR); | |
4071 | count -= avail; | |
4072 | buf += avail; | |
4073 | written += avail; | |
4074 | b->ptr += avail; | |
4075 | if (buf == flushptr) | |
4076 | PerlIO_flush(f); | |
14a5cf38 JH |
4077 | } |
4078 | if (b->ptr >= (b->buf + b->bufsiz)) | |
4079 | PerlIO_flush(f); | |
4080 | } | |
4081 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4082 | PerlIO_flush(f); | |
4083 | return written; | |
9e353e3b NIS |
4084 | } |
4085 | ||
94a175e1 | 4086 | IV |
f62ce20a | 4087 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4088 | { |
14a5cf38 JH |
4089 | IV code; |
4090 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4091 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4092 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4093 | if (code == 0) { | |
de009b76 | 4094 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4095 | b->posn = PerlIO_tell(PerlIONext(f)); |
4096 | } | |
9e353e3b | 4097 | } |
14a5cf38 | 4098 | return code; |
9e353e3b NIS |
4099 | } |
4100 | ||
4101 | Off_t | |
f62ce20a | 4102 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4103 | { |
dcda55fc | 4104 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4105 | /* |
71200d45 | 4106 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4107 | */ |
4108 | Off_t posn = b->posn; | |
37725cdc | 4109 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4110 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4111 | #if 1 | |
4112 | /* As O_APPEND files are normally shared in some sense it is better | |
4113 | to flush : | |
4114 | */ | |
4115 | PerlIO_flush(f); | |
4116 | #else | |
37725cdc | 4117 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4118 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4119 | #endif | |
4120 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4121 | } | |
14a5cf38 JH |
4122 | if (b->buf) { |
4123 | /* | |
71200d45 | 4124 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4125 | */ |
4126 | posn += (b->ptr - b->buf); | |
4127 | } | |
4128 | return posn; | |
9e353e3b NIS |
4129 | } |
4130 | ||
4131 | IV | |
44798d05 NIS |
4132 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4133 | { | |
de009b76 AL |
4134 | const IV code = PerlIOBase_popped(aTHX_ f); |
4135 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4136 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4137 | Safefree(b->buf); | |
4138 | } | |
dcda55fc | 4139 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4140 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4141 | return code; | |
4142 | } | |
4143 | ||
4144 | IV | |
f62ce20a | 4145 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4146 | { |
de009b76 AL |
4147 | const IV code = PerlIOBase_close(aTHX_ f); |
4148 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4149 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4150 | Safefree(b->buf); |
14a5cf38 | 4151 | } |
dcda55fc | 4152 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4153 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4154 | return code; | |
760ac839 LW |
4155 | } |
4156 | ||
9e353e3b | 4157 | STDCHAR * |
f62ce20a | 4158 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4159 | { |
dcda55fc | 4160 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4161 | if (!b->buf) |
4162 | PerlIO_get_base(f); | |
4163 | return b->ptr; | |
9e353e3b NIS |
4164 | } |
4165 | ||
05d1247b | 4166 | SSize_t |
f62ce20a | 4167 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4168 | { |
dcda55fc | 4169 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4170 | if (!b->buf) |
4171 | PerlIO_get_base(f); | |
4172 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4173 | return (b->end - b->ptr); | |
4174 | return 0; | |
9e353e3b NIS |
4175 | } |
4176 | ||
4177 | STDCHAR * | |
f62ce20a | 4178 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4179 | { |
dcda55fc | 4180 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4181 | PERL_UNUSED_CONTEXT; |
4182 | ||
14a5cf38 JH |
4183 | if (!b->buf) { |
4184 | if (!b->bufsiz) | |
1810cd7c | 4185 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4186 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4187 | if (!b->buf) { |
4188 | b->buf = (STDCHAR *) & b->oneword; | |
4189 | b->bufsiz = sizeof(b->oneword); | |
4190 | } | |
dcda55fc | 4191 | b->end = b->ptr = b->buf; |
06da4f11 | 4192 | } |
14a5cf38 | 4193 | return b->buf; |
9e353e3b NIS |
4194 | } |
4195 | ||
4196 | Size_t | |
f62ce20a | 4197 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4198 | { |
dcda55fc | 4199 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4200 | if (!b->buf) |
4201 | PerlIO_get_base(f); | |
4202 | return (b->end - b->buf); | |
9e353e3b NIS |
4203 | } |
4204 | ||
4205 | void | |
f62ce20a | 4206 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4207 | { |
dcda55fc | 4208 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4209 | #ifndef DEBUGGING |
4210 | PERL_UNUSED_ARG(cnt); | |
4211 | #endif | |
14a5cf38 JH |
4212 | if (!b->buf) |
4213 | PerlIO_get_base(f); | |
4214 | b->ptr = ptr; | |
b727803b RGS |
4215 | assert(PerlIO_get_cnt(f) == cnt); |
4216 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4217 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4218 | } |
4219 | ||
71200d45 | 4220 | PerlIO * |
ecdeb87c | 4221 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4222 | { |
ecdeb87c | 4223 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4224 | } |
4225 | ||
4226 | ||
4227 | ||
27da23d5 | 4228 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4229 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4230 | "perlio", |
4231 | sizeof(PerlIOBuf), | |
86e05cf2 | 4232 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4233 | PerlIOBuf_pushed, |
44798d05 | 4234 | PerlIOBuf_popped, |
14a5cf38 | 4235 | PerlIOBuf_open, |
86e05cf2 | 4236 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4237 | NULL, |
4238 | PerlIOBase_fileno, | |
71200d45 | 4239 | PerlIOBuf_dup, |
14a5cf38 JH |
4240 | PerlIOBuf_read, |
4241 | PerlIOBuf_unread, | |
4242 | PerlIOBuf_write, | |
4243 | PerlIOBuf_seek, | |
4244 | PerlIOBuf_tell, | |
4245 | PerlIOBuf_close, | |
4246 | PerlIOBuf_flush, | |
4247 | PerlIOBuf_fill, | |
4248 | PerlIOBase_eof, | |
4249 | PerlIOBase_error, | |
4250 | PerlIOBase_clearerr, | |
4251 | PerlIOBase_setlinebuf, | |
4252 | PerlIOBuf_get_base, | |
4253 | PerlIOBuf_bufsiz, | |
4254 | PerlIOBuf_get_ptr, | |
4255 | PerlIOBuf_get_cnt, | |
4256 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4257 | }; |
4258 | ||
66ecd56b | 4259 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4260 | /* |
71200d45 | 4261 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4262 | */ |
5e2ab84b NIS |
4263 | |
4264 | IV | |
f62ce20a | 4265 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4266 | { |
14a5cf38 | 4267 | /* |
71200d45 | 4268 | * Should never happen |
14a5cf38 JH |
4269 | */ |
4270 | PerlIO_flush(f); | |
4271 | return 0; | |
5e2ab84b NIS |
4272 | } |
4273 | ||
4274 | IV | |
f62ce20a | 4275 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4276 | { |
14a5cf38 | 4277 | /* |
71200d45 | 4278 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4279 | */ |
4280 | PerlIO_flush(f); | |
4281 | return PerlIO_close(f); | |
5e2ab84b NIS |
4282 | } |
4283 | ||
94a175e1 | 4284 | IV |
f62ce20a | 4285 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4286 | { |
14a5cf38 | 4287 | /* |
71200d45 | 4288 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4289 | */ |
4290 | PerlIO_flush(f); | |
4291 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4292 | } |
4293 | ||
4294 | ||
4295 | IV | |
f62ce20a | 4296 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4297 | { |
dcda55fc | 4298 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4299 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4300 | Safefree(b->buf); |
14a5cf38 JH |
4301 | b->buf = NULL; |
4302 | } | |
4303 | PerlIO_pop(aTHX_ f); | |
4304 | return 0; | |
5e2ab84b NIS |
4305 | } |
4306 | ||
4307 | void | |
f62ce20a | 4308 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4309 | { |
14a5cf38 JH |
4310 | if (cnt <= 0) { |
4311 | PerlIO_flush(f); | |
4312 | } | |
4313 | else { | |
f62ce20a | 4314 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4315 | } |
5e2ab84b NIS |
4316 | } |
4317 | ||
4318 | IV | |
2dc2558e | 4319 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4320 | { |
de009b76 | 4321 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4322 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4323 | /* |
71200d45 NIS |
4324 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4325 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4326 | */ |
4327 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4328 | (PerlIOBase(PerlIONext(f))-> | |
4329 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4330 | return code; | |
5e2ab84b NIS |
4331 | } |
4332 | ||
4333 | SSize_t | |
f62ce20a | 4334 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4335 | { |
14a5cf38 JH |
4336 | SSize_t avail = PerlIO_get_cnt(f); |
4337 | SSize_t got = 0; | |
eb160463 | 4338 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4339 | avail = count; |
4340 | if (avail > 0) | |
f62ce20a | 4341 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4342 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4343 | const SSize_t more = |
14a5cf38 JH |
4344 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4345 | if (more >= 0 || got == 0) | |
4346 | got += more; | |
4347 | } | |
4348 | return got; | |
5e2ab84b NIS |
4349 | } |
4350 | ||
27da23d5 | 4351 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4352 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4353 | "pending", |
4354 | sizeof(PerlIOBuf), | |
86e05cf2 | 4355 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4356 | PerlIOPending_pushed, |
44798d05 | 4357 | PerlIOBuf_popped, |
14a5cf38 | 4358 | NULL, |
86e05cf2 | 4359 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4360 | NULL, |
4361 | PerlIOBase_fileno, | |
71200d45 | 4362 | PerlIOBuf_dup, |
14a5cf38 JH |
4363 | PerlIOPending_read, |
4364 | PerlIOBuf_unread, | |
4365 | PerlIOBuf_write, | |
4366 | PerlIOPending_seek, | |
4367 | PerlIOBuf_tell, | |
4368 | PerlIOPending_close, | |
4369 | PerlIOPending_flush, | |
4370 | PerlIOPending_fill, | |
4371 | PerlIOBase_eof, | |
4372 | PerlIOBase_error, | |
4373 | PerlIOBase_clearerr, | |
4374 | PerlIOBase_setlinebuf, | |
4375 | PerlIOBuf_get_base, | |
4376 | PerlIOBuf_bufsiz, | |
4377 | PerlIOBuf_get_ptr, | |
4378 | PerlIOBuf_get_cnt, | |
4379 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4380 | }; |
4381 | ||
4382 | ||
4383 | ||
4384 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4385 | /* |
4386 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4387 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4388 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4389 | * |
4390 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4391 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4392 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4393 | * that it ends at c->nl; these two cases can be distinguished by | |
4394 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4395 | * _unread() and _flush() calls. | |
4396 | * It only matters for read operations. | |
66ecd56b NIS |
4397 | */ |
4398 | ||
14a5cf38 | 4399 | typedef struct { |
22569500 NIS |
4400 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4401 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4402 | * buffer */ |
99efab12 NIS |
4403 | } PerlIOCrlf; |
4404 | ||
ff1e3883 JD |
4405 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4406 | * Otherwise the :crlf layer would always revert back to | |
4407 | * raw mode. | |
4408 | */ | |
4409 | static void | |
4410 | S_inherit_utf8_flag(PerlIO *f) | |
4411 | { | |
4412 | PerlIO *g = PerlIONext(f); | |
4413 | if (PerlIOValid(g)) { | |
4414 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4415 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4416 | } | |
4417 | } | |
4418 | } | |
4419 | ||
f5b9d040 | 4420 | IV |
2dc2558e | 4421 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4422 | { |
14a5cf38 JH |
4423 | IV code; |
4424 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4425 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4426 | #if 0 |
14a5cf38 | 4427 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4428 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4429 | PerlIOBase(f)->flags); |
5e2ab84b | 4430 | #endif |
8229d19f JH |
4431 | { |
4432 | /* Enable the first CRLF capable layer you can find, but if none | |
4433 | * found, the one we just pushed is fine. This results in at | |
4434 | * any given moment at most one CRLF-capable layer being enabled | |
4435 | * in the whole layer stack. */ | |
4436 | PerlIO *g = PerlIONext(f); | |
ff1e3883 | 4437 | while (PerlIOValid(g)) { |
8229d19f JH |
4438 | PerlIOl *b = PerlIOBase(g); |
4439 | if (b && b->tab == &PerlIO_crlf) { | |
4440 | if (!(b->flags & PERLIO_F_CRLF)) | |
4441 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4442 | S_inherit_utf8_flag(g); |
8229d19f JH |
4443 | PerlIO_pop(aTHX_ f); |
4444 | return code; | |
4445 | } | |
4446 | g = PerlIONext(g); | |
4447 | } | |
4448 | } | |
ff1e3883 | 4449 | S_inherit_utf8_flag(f); |
14a5cf38 | 4450 | return code; |
f5b9d040 NIS |
4451 | } |
4452 | ||
4453 | ||
99efab12 | 4454 | SSize_t |
f62ce20a | 4455 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4456 | { |
dcda55fc | 4457 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4458 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4459 | *(c->nl) = 0xd; |
4460 | c->nl = NULL; | |
4461 | } | |
4462 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4463 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4464 | else { |
4465 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4466 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4467 | SSize_t unread = 0; | |
4468 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4469 | PerlIO_flush(f); | |
4470 | if (!b->buf) | |
4471 | PerlIO_get_base(f); | |
4472 | if (b->buf) { | |
4473 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4474 | b->end = b->ptr = b->buf + b->bufsiz; | |
4475 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4476 | b->posn -= b->bufsiz; | |
4477 | } | |
4478 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4479 | const int ch = *--buf; |
14a5cf38 JH |
4480 | if (ch == '\n') { |
4481 | if (b->ptr - 2 >= b->buf) { | |
4482 | *--(b->ptr) = 0xa; | |
4483 | *--(b->ptr) = 0xd; | |
4484 | unread++; | |
4485 | count--; | |
4486 | } | |
4487 | else { | |
93c2c2ec IZ |
4488 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4489 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4490 | unread++; | |
4491 | count--; | |
14a5cf38 JH |
4492 | } |
4493 | } | |
4494 | else { | |
4495 | *--(b->ptr) = ch; | |
4496 | unread++; | |
4497 | count--; | |
4498 | } | |
4499 | } | |
4500 | } | |
4501 | return unread; | |
4502 | } | |
99efab12 NIS |
4503 | } |
4504 | ||
93c2c2ec | 4505 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4506 | SSize_t |
f62ce20a | 4507 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4508 | { |
dcda55fc | 4509 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4510 | if (!b->buf) |
4511 | PerlIO_get_base(f); | |
4512 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4513 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4514 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4515 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4516 | scan: |
4517 | while (nl < b->end && *nl != 0xd) | |
4518 | nl++; | |
4519 | if (nl < b->end && *nl == 0xd) { | |
4520 | test: | |
4521 | if (nl + 1 < b->end) { | |
4522 | if (nl[1] == 0xa) { | |
4523 | *nl = '\n'; | |
4524 | c->nl = nl; | |
4525 | } | |
4526 | else { | |
4527 | /* | |
71200d45 | 4528 | * Not CR,LF but just CR |
14a5cf38 JH |
4529 | */ |
4530 | nl++; | |
4531 | goto scan; | |
4532 | } | |
4533 | } | |
4534 | else { | |
4535 | /* | |
71200d45 | 4536 | * Blast - found CR as last char in buffer |
14a5cf38 | 4537 | */ |
e87a358a | 4538 | |
14a5cf38 JH |
4539 | if (b->ptr < nl) { |
4540 | /* | |
4541 | * They may not care, defer work as long as | |
71200d45 | 4542 | * possible |
14a5cf38 | 4543 | */ |
a0d1d361 | 4544 | c->nl = nl; |
14a5cf38 JH |
4545 | return (nl - b->ptr); |
4546 | } | |
4547 | else { | |
4548 | int code; | |
22569500 | 4549 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4550 | * flush() is concerned */ |
22569500 | 4551 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4552 | /* Note as we have moved buf up flush's |
4553 | posn += ptr-buf | |
4554 | will naturally make posn point at CR | |
4555 | */ | |
22569500 NIS |
4556 | b->bufsiz--; /* Buffer is thus smaller */ |
4557 | code = PerlIO_fill(f); /* Fetch some more */ | |
4558 | b->bufsiz++; /* Restore size for next time */ | |
4559 | b->buf--; /* Point at space */ | |
4560 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4561 | * off */ |
22569500 | 4562 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4563 | if (code == 0) |
22569500 | 4564 | goto test; /* fill() call worked */ |
14a5cf38 | 4565 | /* |
71200d45 | 4566 | * CR at EOF - just fall through |
14a5cf38 | 4567 | */ |
a0d1d361 | 4568 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4569 | } |
4570 | } | |
4571 | } | |
4572 | } | |
4573 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4574 | } | |
4575 | return 0; | |
99efab12 NIS |
4576 | } |
4577 | ||
4578 | void | |
f62ce20a | 4579 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4580 | { |
dcda55fc AL |
4581 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4582 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4583 | if (!b->buf) |
4584 | PerlIO_get_base(f); | |
4585 | if (!ptr) { | |
a0d1d361 | 4586 | if (c->nl) { |
14a5cf38 | 4587 | ptr = c->nl + 1; |
22569500 | 4588 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4589 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4590 | ptr--; |
4591 | } | |
4592 | } | |
14a5cf38 JH |
4593 | else { |
4594 | ptr = b->end; | |
14a5cf38 JH |
4595 | } |
4596 | ptr -= cnt; | |
4597 | } | |
4598 | else { | |
6f207bd3 | 4599 | NOOP; |
3b4bd3fd | 4600 | #if 0 |
14a5cf38 | 4601 | /* |
71200d45 | 4602 | * Test code - delete when it works ... |
14a5cf38 | 4603 | */ |
3b4bd3fd | 4604 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4605 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4606 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4607 | /* Defered CR at end of buffer case - we lied about count */ |
4608 | chk--; | |
22569500 | 4609 | } |
14a5cf38 JH |
4610 | chk -= cnt; |
4611 | ||
a0d1d361 | 4612 | if (ptr != chk ) { |
99ef548b | 4613 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4614 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4615 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4616 | } |
99ef548b | 4617 | #endif |
14a5cf38 JH |
4618 | } |
4619 | if (c->nl) { | |
4620 | if (ptr > c->nl) { | |
4621 | /* | |
71200d45 | 4622 | * They have taken what we lied about |
14a5cf38 JH |
4623 | */ |
4624 | *(c->nl) = 0xd; | |
4625 | c->nl = NULL; | |
4626 | ptr++; | |
4627 | } | |
4628 | } | |
4629 | b->ptr = ptr; | |
4630 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4631 | } |
4632 | ||
4633 | SSize_t | |
f62ce20a | 4634 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4635 | { |
14a5cf38 | 4636 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4637 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4638 | else { |
dcda55fc | 4639 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4640 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4641 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4642 | if (!b->buf) |
4643 | PerlIO_get_base(f); | |
4644 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4645 | return 0; | |
4646 | while (buf < ebuf) { | |
dcda55fc | 4647 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4648 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4649 | while (buf < ebuf && b->ptr < eptr) { | |
4650 | if (*buf == '\n') { | |
4651 | if ((b->ptr + 2) > eptr) { | |
4652 | /* | |
71200d45 | 4653 | * Not room for both |
14a5cf38 JH |
4654 | */ |
4655 | PerlIO_flush(f); | |
4656 | break; | |
4657 | } | |
4658 | else { | |
22569500 NIS |
4659 | *(b->ptr)++ = 0xd; /* CR */ |
4660 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4661 | buf++; |
4662 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4663 | PerlIO_flush(f); | |
4664 | break; | |
4665 | } | |
4666 | } | |
4667 | } | |
4668 | else { | |
dcda55fc | 4669 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4670 | } |
4671 | if (b->ptr >= eptr) { | |
4672 | PerlIO_flush(f); | |
4673 | break; | |
4674 | } | |
4675 | } | |
4676 | } | |
4677 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4678 | PerlIO_flush(f); | |
4679 | return (buf - (STDCHAR *) vbuf); | |
4680 | } | |
99efab12 NIS |
4681 | } |
4682 | ||
4683 | IV | |
f62ce20a | 4684 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4685 | { |
dcda55fc | 4686 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4687 | if (c->nl) { |
4688 | *(c->nl) = 0xd; | |
4689 | c->nl = NULL; | |
4690 | } | |
f62ce20a | 4691 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4692 | } |
4693 | ||
86e05cf2 NIS |
4694 | IV |
4695 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4696 | { | |
4697 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4698 | /* In text mode - flush any pending stuff and flip it */ | |
4699 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4700 | #ifndef PERLIO_USING_CRLF | |
4701 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4702 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4703 | #endif |
4704 | } | |
4705 | return 0; | |
4706 | } | |
4707 | ||
27da23d5 | 4708 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4709 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4710 | "crlf", |
4711 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4712 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4713 | PerlIOCrlf_pushed, |
44798d05 | 4714 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4715 | PerlIOBuf_open, |
86e05cf2 | 4716 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4717 | NULL, |
4718 | PerlIOBase_fileno, | |
71200d45 | 4719 | PerlIOBuf_dup, |
de009b76 | 4720 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4721 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4722 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4723 | PerlIOBuf_seek, |
4724 | PerlIOBuf_tell, | |
4725 | PerlIOBuf_close, | |
4726 | PerlIOCrlf_flush, | |
4727 | PerlIOBuf_fill, | |
4728 | PerlIOBase_eof, | |
4729 | PerlIOBase_error, | |
4730 | PerlIOBase_clearerr, | |
4731 | PerlIOBase_setlinebuf, | |
4732 | PerlIOBuf_get_base, | |
4733 | PerlIOBuf_bufsiz, | |
4734 | PerlIOBuf_get_ptr, | |
4735 | PerlIOCrlf_get_cnt, | |
4736 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4737 | }; |
4738 | ||
06da4f11 NIS |
4739 | #ifdef HAS_MMAP |
4740 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4741 | /* |
71200d45 | 4742 | * mmap as "buffer" layer |
14a5cf38 | 4743 | */ |
06da4f11 | 4744 | |
14a5cf38 | 4745 | typedef struct { |
22569500 NIS |
4746 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4747 | Mmap_t mptr; /* Mapped address */ | |
4748 | Size_t len; /* mapped length */ | |
4749 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4750 | } PerlIOMmap; |
4751 | ||
4752 | IV | |
f62ce20a | 4753 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4754 | { |
27da23d5 | 4755 | dVAR; |
de009b76 AL |
4756 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4757 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4758 | IV code = 0; |
4759 | if (m->len) | |
4760 | abort(); | |
4761 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4762 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4763 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4764 | Stat_t st; |
4765 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4766 | if (code == 0 && S_ISREG(st.st_mode)) { |
4767 | SSize_t len = st.st_size - b->posn; | |
4768 | if (len > 0) { | |
4769 | Off_t posn; | |
27da23d5 JH |
4770 | if (PL_mmap_page_size <= 0) |
4771 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4772 | PL_mmap_page_size); | |
14a5cf38 JH |
4773 | if (b->posn < 0) { |
4774 | /* | |
4775 | * This is a hack - should never happen - open should | |
71200d45 | 4776 | * have set it ! |
14a5cf38 JH |
4777 | */ |
4778 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4779 | } | |
27da23d5 | 4780 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 | 4781 | len = st.st_size - posn; |
b91fbb93 | 4782 | m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
14a5cf38 | 4783 | if (m->mptr && m->mptr != (Mmap_t) - 1) { |
a5262162 | 4784 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4785 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4786 | #endif |
a5262162 | 4787 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4788 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4789 | #endif |
14a5cf38 JH |
4790 | PerlIOBase(f)->flags = |
4791 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4792 | b->end = ((STDCHAR *) m->mptr) + len; | |
4793 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4794 | b->ptr = b->buf; | |
4795 | m->len = len; | |
4796 | } | |
4797 | else { | |
4798 | b->buf = NULL; | |
4799 | } | |
4800 | } | |
4801 | else { | |
4802 | PerlIOBase(f)->flags = | |
4803 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4804 | b->buf = NULL; | |
4805 | b->ptr = b->end = b->ptr; | |
4806 | code = -1; | |
4807 | } | |
4808 | } | |
4809 | } | |
4810 | return code; | |
06da4f11 NIS |
4811 | } |
4812 | ||
4813 | IV | |
e87a358a | 4814 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4815 | { |
dcda55fc | 4816 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4817 | IV code = 0; |
4818 | if (m->len) { | |
dcda55fc | 4819 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4820 | if (b->buf) { |
1ccb7c8d JH |
4821 | /* The munmap address argument is tricky: depending on the |
4822 | * standard it is either "void *" or "caddr_t" (which is | |
4823 | * usually "char *" (signed or unsigned). If we cast it | |
4824 | * to "void *", those that have it caddr_t and an uptight | |
4825 | * C++ compiler, will freak out. But casting it as char* | |
4826 | * should work. Maybe. (Using Mmap_t figured out by | |
4827 | * Configure doesn't always work, apparently.) */ | |
4828 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4829 | b->buf = NULL; |
4830 | m->len = 0; | |
4831 | m->mptr = NULL; | |
4832 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4833 | code = -1; | |
4834 | } | |
4835 | b->ptr = b->end = b->buf; | |
4836 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4837 | } | |
4838 | return code; | |
06da4f11 NIS |
4839 | } |
4840 | ||
4841 | STDCHAR * | |
f62ce20a | 4842 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4843 | { |
dcda55fc AL |
4844 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4845 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4846 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4847 | /* | |
71200d45 | 4848 | * Already have a readbuffer in progress |
14a5cf38 JH |
4849 | */ |
4850 | return b->buf; | |
4851 | } | |
4852 | if (b->buf) { | |
4853 | /* | |
71200d45 | 4854 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4855 | */ |
22569500 NIS |
4856 | m->bbuf = b->buf; /* save it in case we need it again */ |
4857 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4858 | } |
4859 | if (!b->buf) { | |
22569500 | 4860 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4861 | if (!b->buf) { |
4862 | /* | |
71200d45 | 4863 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4864 | */ |
4865 | b->buf = m->bbuf; | |
4866 | } | |
4867 | } | |
4868 | b->ptr = b->end = b->buf; | |
4869 | if (b->buf) | |
4870 | return b->buf; | |
f62ce20a | 4871 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4872 | } |
4873 | ||
4874 | SSize_t | |
f62ce20a | 4875 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4876 | { |
dcda55fc AL |
4877 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4878 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4879 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4880 | PerlIO_flush(f); | |
4881 | if (b->ptr && (b->ptr - count) >= b->buf | |
4882 | && memEQ(b->ptr - count, vbuf, count)) { | |
4883 | b->ptr -= count; | |
4884 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4885 | return count; | |
4886 | } | |
4887 | if (m->len) { | |
4888 | /* | |
71200d45 | 4889 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4890 | */ |
4891 | PerlIO_flush(f); | |
4892 | /* | |
71200d45 | 4893 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4894 | */ |
4895 | if (!b->buf && m->bbuf) | |
4896 | b->buf = m->bbuf; | |
4897 | if (!b->buf) { | |
f62ce20a | 4898 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4899 | m->bbuf = b->buf; |
4900 | } | |
4901 | } | |
f62ce20a | 4902 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4903 | } |
4904 | ||
4905 | SSize_t | |
f62ce20a | 4906 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4907 | { |
de009b76 AL |
4908 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4909 | PerlIOBuf * const b = &m->base; | |
4910 | ||
14a5cf38 JH |
4911 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4912 | /* | |
71200d45 | 4913 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4914 | */ |
4915 | if (m->len) { | |
e87a358a | 4916 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4917 | return 0; |
4918 | } | |
4919 | /* | |
71200d45 | 4920 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4921 | */ |
4922 | if (!b->buf && m->bbuf) | |
4923 | b->buf = m->bbuf; | |
4924 | if (!b->buf) { | |
f62ce20a | 4925 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4926 | m->bbuf = b->buf; |
4927 | } | |
06da4f11 | 4928 | } |
f62ce20a | 4929 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4930 | } |
4931 | ||
4932 | IV | |
f62ce20a | 4933 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4934 | { |
dcda55fc AL |
4935 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4936 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4937 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4938 | /* |
71200d45 | 4939 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4940 | */ |
4941 | if (b->buf) { | |
4942 | if (m->len) { | |
4943 | /* | |
71200d45 | 4944 | * Unmap the buffer |
14a5cf38 | 4945 | */ |
e87a358a | 4946 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4947 | code = -1; |
4948 | } | |
4949 | else { | |
4950 | /* | |
4951 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4952 | * remember it in case we need one later |
14a5cf38 JH |
4953 | */ |
4954 | m->bbuf = b->buf; | |
4955 | } | |
4956 | } | |
4957 | return code; | |
06da4f11 NIS |
4958 | } |
4959 | ||
4960 | IV | |
f62ce20a | 4961 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4962 | { |
dcda55fc | 4963 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4964 | IV code = PerlIO_flush(f); |
4965 | if (code == 0 && !b->buf) { | |
f62ce20a | 4966 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4967 | } |
4968 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4969 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4970 | } |
4971 | return code; | |
06da4f11 NIS |
4972 | } |
4973 | ||
4974 | IV | |
f62ce20a | 4975 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4976 | { |
dcda55fc AL |
4977 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4978 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4979 | IV code = PerlIO_flush(f); |
4980 | if (m->bbuf) { | |
4981 | b->buf = m->bbuf; | |
4982 | m->bbuf = NULL; | |
4983 | b->ptr = b->end = b->buf; | |
4984 | } | |
f62ce20a | 4985 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4986 | code = -1; |
4987 | return code; | |
06da4f11 NIS |
4988 | } |
4989 | ||
71200d45 | 4990 | PerlIO * |
ecdeb87c | 4991 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4992 | { |
ecdeb87c | 4993 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4994 | } |
4995 | ||
06da4f11 | 4996 | |
27da23d5 | 4997 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4998 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4999 | "mmap", |
5000 | sizeof(PerlIOMmap), | |
86e05cf2 | 5001 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 5002 | PerlIOBuf_pushed, |
44798d05 | 5003 | PerlIOBuf_popped, |
14a5cf38 | 5004 | PerlIOBuf_open, |
86e05cf2 | 5005 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
5006 | NULL, |
5007 | PerlIOBase_fileno, | |
71200d45 | 5008 | PerlIOMmap_dup, |
14a5cf38 JH |
5009 | PerlIOBuf_read, |
5010 | PerlIOMmap_unread, | |
5011 | PerlIOMmap_write, | |
5012 | PerlIOBuf_seek, | |
5013 | PerlIOBuf_tell, | |
5014 | PerlIOBuf_close, | |
5015 | PerlIOMmap_flush, | |
5016 | PerlIOMmap_fill, | |
5017 | PerlIOBase_eof, | |
5018 | PerlIOBase_error, | |
5019 | PerlIOBase_clearerr, | |
5020 | PerlIOBase_setlinebuf, | |
5021 | PerlIOMmap_get_base, | |
5022 | PerlIOBuf_bufsiz, | |
5023 | PerlIOBuf_get_ptr, | |
5024 | PerlIOBuf_get_cnt, | |
5025 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
5026 | }; |
5027 | ||
22569500 | 5028 | #endif /* HAS_MMAP */ |
06da4f11 | 5029 | |
9e353e3b | 5030 | PerlIO * |
e87a358a | 5031 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 5032 | { |
97aff369 | 5033 | dVAR; |
a1ea730d | 5034 | if (!PL_perlio) { |
14a5cf38 JH |
5035 | PerlIO_stdstreams(aTHX); |
5036 | } | |
303f2dc3 | 5037 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
5038 | } |
5039 | ||
9e353e3b | 5040 | PerlIO * |
e87a358a | 5041 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 5042 | { |
97aff369 | 5043 | dVAR; |
a1ea730d | 5044 | if (!PL_perlio) { |
14a5cf38 JH |
5045 | PerlIO_stdstreams(aTHX); |
5046 | } | |
303f2dc3 | 5047 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
5048 | } |
5049 | ||
9e353e3b | 5050 | PerlIO * |
e87a358a | 5051 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 5052 | { |
97aff369 | 5053 | dVAR; |
a1ea730d | 5054 | if (!PL_perlio) { |
14a5cf38 JH |
5055 | PerlIO_stdstreams(aTHX); |
5056 | } | |
303f2dc3 | 5057 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
5058 | } |
5059 | ||
5060 | /*--------------------------------------------------------------------------------------*/ | |
5061 | ||
9e353e3b NIS |
5062 | char * |
5063 | PerlIO_getname(PerlIO *f, char *buf) | |
5064 | { | |
14a5cf38 | 5065 | dTHX; |
a15cef0c | 5066 | #ifdef VMS |
73d840c0 | 5067 | char *name = NULL; |
7659f319 | 5068 | bool exported = FALSE; |
14a5cf38 | 5069 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
5070 | if (!stdio) { |
5071 | stdio = PerlIO_exportFILE(f,0); | |
5072 | exported = TRUE; | |
5073 | } | |
5074 | if (stdio) { | |
14a5cf38 | 5075 | name = fgetname(stdio, buf); |
7659f319 CB |
5076 | if (exported) PerlIO_releaseFILE(f,stdio); |
5077 | } | |
73d840c0 | 5078 | return name; |
a15cef0c | 5079 | #else |
8772537c AL |
5080 | PERL_UNUSED_ARG(f); |
5081 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 5082 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 5083 | return NULL; |
a15cef0c | 5084 | #endif |
9e353e3b NIS |
5085 | } |
5086 | ||
5087 | ||
5088 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
5089 | /* |
5090 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 5091 | * terms of above |
14a5cf38 | 5092 | */ |
9e353e3b | 5093 | |
e87a358a NIS |
5094 | #undef PerlIO_fdopen |
5095 | PerlIO * | |
5096 | PerlIO_fdopen(int fd, const char *mode) | |
5097 | { | |
5098 | dTHX; | |
bd61b366 | 5099 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
5100 | } |
5101 | ||
5102 | #undef PerlIO_open | |
5103 | PerlIO * | |
5104 | PerlIO_open(const char *path, const char *mode) | |
5105 | { | |
5106 | dTHX; | |
42d9b98d | 5107 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 5108 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
5109 | } |
5110 | ||
5111 | #undef Perlio_reopen | |
5112 | PerlIO * | |
5113 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
5114 | { | |
5115 | dTHX; | |
42d9b98d | 5116 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 5117 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
5118 | } |
5119 | ||
9e353e3b | 5120 | #undef PerlIO_getc |
6f9d8c32 | 5121 | int |
9e353e3b | 5122 | PerlIO_getc(PerlIO *f) |
760ac839 | 5123 | { |
e87a358a | 5124 | dTHX; |
14a5cf38 | 5125 | STDCHAR buf[1]; |
de009b76 | 5126 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
5127 | return (unsigned char) buf[0]; |
5128 | } | |
5129 | return EOF; | |
313ca112 NIS |
5130 | } |
5131 | ||
5132 | #undef PerlIO_ungetc | |
5133 | int | |
5134 | PerlIO_ungetc(PerlIO *f, int ch) | |
5135 | { | |
e87a358a | 5136 | dTHX; |
14a5cf38 JH |
5137 | if (ch != EOF) { |
5138 | STDCHAR buf = ch; | |
5139 | if (PerlIO_unread(f, &buf, 1) == 1) | |
5140 | return ch; | |
5141 | } | |
5142 | return EOF; | |
760ac839 LW |
5143 | } |
5144 | ||
9e353e3b NIS |
5145 | #undef PerlIO_putc |
5146 | int | |
5147 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 5148 | { |
e87a358a | 5149 | dTHX; |
14a5cf38 JH |
5150 | STDCHAR buf = ch; |
5151 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5152 | } |
5153 | ||
9e353e3b | 5154 | #undef PerlIO_puts |
760ac839 | 5155 | int |
9e353e3b | 5156 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5157 | { |
e87a358a | 5158 | dTHX; |
dcda55fc | 5159 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5160 | } |
5161 | ||
5162 | #undef PerlIO_rewind | |
5163 | void | |
c78749f2 | 5164 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5165 | { |
e87a358a | 5166 | dTHX; |
14a5cf38 JH |
5167 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5168 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5169 | } |
5170 | ||
5171 | #undef PerlIO_vprintf | |
5172 | int | |
5173 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5174 | { | |
14a5cf38 | 5175 | dTHX; |
53ce71d3 | 5176 | SV * sv; |
b83604b4 | 5177 | const char *s; |
14a5cf38 JH |
5178 | STRLEN len; |
5179 | SSize_t wrote; | |
2cc61e15 | 5180 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5181 | va_list apc; |
5182 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5183 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 5184 | #else |
53ce71d3 | 5185 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5186 | #endif |
b83604b4 | 5187 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5188 | wrote = PerlIO_write(f, s, len); |
5189 | SvREFCNT_dec(sv); | |
5190 | return wrote; | |
760ac839 LW |
5191 | } |
5192 | ||
5193 | #undef PerlIO_printf | |
6f9d8c32 | 5194 | int |
14a5cf38 | 5195 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5196 | { |
14a5cf38 JH |
5197 | va_list ap; |
5198 | int result; | |
5199 | va_start(ap, fmt); | |
5200 | result = PerlIO_vprintf(f, fmt, ap); | |
5201 | va_end(ap); | |
5202 | return result; | |
760ac839 LW |
5203 | } |
5204 | ||
5205 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5206 | int |
14a5cf38 | 5207 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5208 | { |
e87a358a | 5209 | dTHX; |
14a5cf38 JH |
5210 | va_list ap; |
5211 | int result; | |
5212 | va_start(ap, fmt); | |
5213 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5214 | va_end(ap); | |
5215 | return result; | |
760ac839 LW |
5216 | } |
5217 | ||
5218 | #undef PerlIO_tmpfile | |
5219 | PerlIO * | |
c78749f2 | 5220 | PerlIO_tmpfile(void) |
760ac839 | 5221 | { |
2941a2e1 JH |
5222 | dTHX; |
5223 | PerlIO *f = NULL; | |
2941a2e1 | 5224 | #ifdef WIN32 |
de009b76 | 5225 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5226 | if (fd >= 0) |
5227 | f = PerlIO_fdopen(fd, "w+b"); | |
5228 | #else /* WIN32 */ | |
460c8493 | 5229 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5230 | int fd = -1; |
5231 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
5232 | const char * const tmpdir = PL_tainting ? NULL : PerlEnv_getenv("TMPDIR"); | |
525f6fe9 | 5233 | SV * sv = NULL; |
2941a2e1 JH |
5234 | /* |
5235 | * I have no idea how portable mkstemp() is ... NI-S | |
5236 | */ | |
7299ca58 | 5237 | if (tmpdir && *tmpdir) { |
0b99e986 | 5238 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5239 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5240 | sv_catpv(sv, tempname + 4); |
5241 | fd = mkstemp(SvPVX(sv)); | |
5242 | } | |
5243 | if (fd < 0) { | |
7299ca58 | 5244 | sv = NULL; |
0b99e986 RGS |
5245 | /* else we try /tmp */ |
5246 | fd = mkstemp(tempname); | |
5247 | } | |
2941a2e1 JH |
5248 | if (fd >= 0) { |
5249 | f = PerlIO_fdopen(fd, "w+"); | |
5250 | if (f) | |
5251 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5252 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5253 | } |
ef8d46e8 | 5254 | SvREFCNT_dec(sv); |
2941a2e1 | 5255 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5256 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5257 | |
085e731f CB |
5258 | if (stdio) |
5259 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5260 | ||
2941a2e1 JH |
5261 | # endif /* else HAS_MKSTEMP */ |
5262 | #endif /* else WIN32 */ | |
5263 | return f; | |
760ac839 LW |
5264 | } |
5265 | ||
6f9d8c32 NIS |
5266 | #undef HAS_FSETPOS |
5267 | #undef HAS_FGETPOS | |
5268 | ||
22569500 NIS |
5269 | #endif /* USE_SFIO */ |
5270 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5271 | |
9e353e3b | 5272 | /*======================================================================================*/ |
14a5cf38 | 5273 | /* |
71200d45 NIS |
5274 | * Now some functions in terms of above which may be needed even if we are |
5275 | * not in true PerlIO mode | |
9e353e3b | 5276 | */ |
188f0c84 YO |
5277 | const char * |
5278 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5279 | { | |
5280 | dVAR; | |
8b850bd5 NC |
5281 | const char *direction = NULL; |
5282 | SV *layers; | |
188f0c84 YO |
5283 | /* |
5284 | * Need to supply default layer info from open.pm | |
5285 | */ | |
8b850bd5 NC |
5286 | |
5287 | if (!PL_curcop) | |
5288 | return NULL; | |
5289 | ||
5290 | if (mode && mode[0] != 'r') { | |
5291 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5292 | direction = "open>"; | |
5293 | } else { | |
5294 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5295 | direction = "open<"; | |
188f0c84 | 5296 | } |
8b850bd5 NC |
5297 | if (!direction) |
5298 | return NULL; | |
5299 | ||
20439bc7 | 5300 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5301 | |
5302 | assert(layers); | |
5303 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5304 | } |
5305 | ||
9e353e3b | 5306 | |
760ac839 LW |
5307 | #ifndef HAS_FSETPOS |
5308 | #undef PerlIO_setpos | |
5309 | int | |
766a733e | 5310 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5311 | { |
14a5cf38 JH |
5312 | dTHX; |
5313 | if (SvOK(pos)) { | |
5314 | STRLEN len; | |
c4420975 | 5315 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5316 | if (f && len == sizeof(Off_t)) |
5317 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5318 | } | |
93189314 | 5319 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5320 | return -1; |
760ac839 | 5321 | } |
c411622e | 5322 | #else |
c411622e | 5323 | #undef PerlIO_setpos |
5324 | int | |
766a733e | 5325 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5326 | { |
14a5cf38 JH |
5327 | dTHX; |
5328 | if (SvOK(pos)) { | |
5329 | STRLEN len; | |
c4420975 | 5330 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5331 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5332 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5333 | return fsetpos64(f, fpos); |
d9b3e12d | 5334 | #else |
14a5cf38 | 5335 | return fsetpos(f, fpos); |
d9b3e12d | 5336 | #endif |
14a5cf38 | 5337 | } |
766a733e | 5338 | } |
93189314 | 5339 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5340 | return -1; |
c411622e | 5341 | } |
5342 | #endif | |
760ac839 LW |
5343 | |
5344 | #ifndef HAS_FGETPOS | |
5345 | #undef PerlIO_getpos | |
5346 | int | |
766a733e | 5347 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5348 | { |
14a5cf38 JH |
5349 | dTHX; |
5350 | Off_t posn = PerlIO_tell(f); | |
5351 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5352 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5353 | } |
c411622e | 5354 | #else |
c411622e | 5355 | #undef PerlIO_getpos |
5356 | int | |
766a733e | 5357 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5358 | { |
14a5cf38 JH |
5359 | dTHX; |
5360 | Fpos_t fpos; | |
5361 | int code; | |
2d4389e4 | 5362 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5363 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5364 | #else |
14a5cf38 | 5365 | code = fgetpos(f, &fpos); |
d9b3e12d | 5366 | #endif |
14a5cf38 JH |
5367 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5368 | return code; | |
c411622e | 5369 | } |
5370 | #endif | |
760ac839 LW |
5371 | |
5372 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5373 | ||
5374 | int | |
c78749f2 | 5375 | vprintf(char *pat, char *args) |
662a7e3f CS |
5376 | { |
5377 | _doprnt(pat, args, stdout); | |
22569500 | 5378 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5379 | * value */ |
662a7e3f CS |
5380 | } |
5381 | ||
5382 | int | |
c78749f2 | 5383 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5384 | { |
5385 | _doprnt(pat, args, fd); | |
22569500 | 5386 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5387 | * value */ |
760ac839 LW |
5388 | } |
5389 | ||
5390 | #endif | |
5391 | ||
5392 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5393 | int |
8ac85365 | 5394 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5395 | { |
8ff9a42b | 5396 | dTHX; |
d9fad198 | 5397 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5398 | PERL_UNUSED_CONTEXT; |
5399 | ||
1208b3dd JH |
5400 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5401 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5402 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5403 | } |
1208b3dd | 5404 | #endif |
14a5cf38 | 5405 | return val; |
760ac839 LW |
5406 | } |
5407 | #endif | |
5408 | ||
5409 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5410 | int |
14a5cf38 | 5411 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5412 | { |
14a5cf38 JH |
5413 | va_list ap; |
5414 | int result; | |
5415 | va_start(ap, fmt); | |
5416 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5417 | va_end(ap); | |
5418 | return result; | |
760ac839 LW |
5419 | } |
5420 | #endif | |
9cfa90c0 NC |
5421 | |
5422 | /* | |
5423 | * Local variables: | |
5424 | * c-indentation-style: bsd | |
5425 | * c-basic-offset: 4 | |
5426 | * indent-tabs-mode: t | |
5427 | * End: | |
5428 | * | |
37442d52 RGS |
5429 | * ex: set ts=8 sts=4 sw=4 noet: |
5430 | */ |