Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
5cb43542 RGS |
2 | * perlio.c |
3 | * Copyright (c) 1996-2006, Nick Ing-Simmons | |
c1d0198f | 4 | * Copyright (c) 2006, 2007, 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. | |
13 | */ | |
14 | ||
166f8a29 DM |
15 | /* This file contains the functions needed to implement PerlIO, which |
16 | * is Perl's private replacement for the C stdio library. This is used | |
17 | * by default unless you compile with -Uuseperlio or run with | |
18 | * PERLIO=:stdio (but don't do this unless you know what you're doing) | |
19 | */ | |
20 | ||
d31a8517 | 21 | /* |
71200d45 | 22 | * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get |
14a5cf38 | 23 | * at the dispatch tables, even when we do not need it for other reasons. |
71200d45 | 24 | * Invent a dSYS macro to abstract this out |
14a5cf38 | 25 | */ |
7bcba3d4 NIS |
26 | #ifdef PERL_IMPLICIT_SYS |
27 | #define dSYS dTHX | |
28 | #else | |
29 | #define dSYS dNOOP | |
30 | #endif | |
31 | ||
760ac839 | 32 | #define VOIDUSED 1 |
12ae5dfc JH |
33 | #ifdef PERL_MICRO |
34 | # include "uconfig.h" | |
35 | #else | |
b0f06652 VK |
36 | # ifndef USE_CROSS_COMPILE |
37 | # include "config.h" | |
38 | # else | |
39 | # include "xconfig.h" | |
40 | # endif | |
12ae5dfc | 41 | #endif |
760ac839 | 42 | |
6f9d8c32 | 43 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 44 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
14a5cf38 | 45 | /* |
71200d45 | 46 | * #define PerlIO FILE |
14a5cf38 | 47 | */ |
760ac839 LW |
48 | #endif |
49 | /* | |
6f9d8c32 | 50 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 51 | * which are not #defined in perlio.h. |
6f9d8c32 | 52 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
53 | */ |
54 | ||
55 | #include "EXTERN.h" | |
864dbfa3 | 56 | #define PERL_IN_PERLIO_C |
760ac839 LW |
57 | #include "perl.h" |
58 | ||
32af7c23 CL |
59 | #ifdef PERL_IMPLICIT_CONTEXT |
60 | #undef dSYS | |
61 | #define dSYS dTHX | |
62 | #endif | |
63 | ||
0c4f7ff0 NIS |
64 | #include "XSUB.h" |
65 | ||
9cffb111 OS |
66 | #ifdef __Lynx__ |
67 | /* Missing proto on LynxOS */ | |
68 | int mkstemp(char*); | |
69 | #endif | |
70 | ||
1b7a0411 | 71 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 72 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 73 | if (PerlIOValid(f)) { \ |
46c461b5 | 74 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
75 | if (tab && tab->callback) \ |
76 | return (*tab->callback) args; \ | |
77 | else \ | |
78 | return PerlIOBase_ ## base args; \ | |
79 | } \ | |
80 | else \ | |
81 | SETERRNO(EBADF, SS_IVCHAN); \ | |
82 | return failure | |
83 | ||
84 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 85 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 86 | if (PerlIOValid(f)) { \ |
46c461b5 | 87 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
88 | if (tab && tab->callback) \ |
89 | return (*tab->callback) args; \ | |
90 | SETERRNO(EINVAL, LIB_INVARG); \ | |
91 | } \ | |
92 | else \ | |
93 | SETERRNO(EBADF, SS_IVCHAN); \ | |
94 | return failure | |
95 | ||
96 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 97 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 98 | if (PerlIOValid(f)) { \ |
46c461b5 | 99 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
100 | if (tab && tab->callback) \ |
101 | (*tab->callback) args; \ | |
102 | else \ | |
103 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
104 | } \ |
105 | else \ | |
106 | SETERRNO(EBADF, SS_IVCHAN) | |
107 | ||
108 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 109 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 110 | if (PerlIOValid(f)) { \ |
46c461b5 | 111 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
112 | if (tab && tab->callback) \ |
113 | (*tab->callback) args; \ | |
37725cdc NIS |
114 | else \ |
115 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
116 | } \ |
117 | else \ | |
118 | SETERRNO(EBADF, SS_IVCHAN) | |
119 | ||
89a3a251 JH |
120 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
121 | extern int fseeko(FILE *, off_t, int); | |
122 | extern off_t ftello(FILE *); | |
123 | #endif | |
124 | ||
71ab4674 | 125 | #ifndef USE_SFIO |
a0c21aa1 JH |
126 | |
127 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); | |
128 | ||
71ab4674 SP |
129 | int |
130 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
131 | { | |
132 | /* | |
133 | * This used to be contents of do_binmode in doio.c | |
134 | */ | |
135 | #ifdef DOSISH | |
136 | # if defined(atarist) || defined(__MINT__) | |
58c0efa5 | 137 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
138 | if (!fflush(fp)) { |
139 | if (mode & O_BINARY) | |
140 | ((FILE *) fp)->_flag |= _IOBIN; | |
141 | else | |
142 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
143 | return 1; | |
144 | } | |
145 | return 0; | |
146 | # else | |
147 | dTHX; | |
58c0efa5 | 148 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
149 | #ifdef NETWARE |
150 | if (PerlLIO_setmode(fp, mode) != -1) { | |
151 | #else | |
152 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
153 | #endif | |
154 | # if defined(WIN32) && defined(__BORLANDC__) | |
155 | /* | |
156 | * The translation mode of the stream is maintained independent | |
157 | of | |
158 | * the translation mode of the fd in the Borland RTL (heavy | |
159 | * digging through their runtime sources reveal). User has to | |
160 | set | |
161 | * the mode explicitly for the stream (though they don't | |
162 | document | |
163 | * this anywhere). GSAR 97-5-24 | |
164 | */ | |
165 | fseek(fp, 0L, 0); | |
166 | if (mode & O_BINARY) | |
167 | fp->flags |= _F_BIN; | |
168 | else | |
169 | fp->flags &= ~_F_BIN; | |
170 | # endif | |
171 | return 1; | |
172 | } | |
173 | else | |
174 | return 0; | |
175 | # endif | |
176 | #else | |
177 | # if defined(USEMYBINMODE) | |
178 | dTHX; | |
58c0efa5 RGS |
179 | # if defined(__CYGWIN__) |
180 | PERL_UNUSED_ARG(iotype); | |
181 | # endif | |
71ab4674 SP |
182 | if (my_binmode(fp, iotype, mode) != FALSE) |
183 | return 1; | |
184 | else | |
185 | return 0; | |
186 | # else | |
187 | PERL_UNUSED_ARG(fp); | |
188 | PERL_UNUSED_ARG(iotype); | |
189 | PERL_UNUSED_ARG(mode); | |
190 | return 1; | |
191 | # endif | |
192 | #endif | |
193 | } | |
194 | #endif /* sfio */ | |
195 | ||
06c7082d | 196 | #ifndef O_ACCMODE |
22569500 | 197 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
198 | #endif |
199 | ||
200 | int | |
201 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
202 | { | |
de009b76 | 203 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
204 | int ix = 0; |
205 | int ptype; | |
206 | switch (result) { | |
207 | case O_RDONLY: | |
208 | ptype = IoTYPE_RDONLY; | |
209 | break; | |
210 | case O_WRONLY: | |
211 | ptype = IoTYPE_WRONLY; | |
212 | break; | |
213 | case O_RDWR: | |
214 | default: | |
215 | ptype = IoTYPE_RDWR; | |
216 | break; | |
217 | } | |
218 | if (writing) | |
219 | *writing = (result != O_RDONLY); | |
220 | ||
221 | if (result == O_RDONLY) { | |
222 | mode[ix++] = 'r'; | |
223 | } | |
224 | #ifdef O_APPEND | |
225 | else if (rawmode & O_APPEND) { | |
226 | mode[ix++] = 'a'; | |
227 | if (result != O_WRONLY) | |
228 | mode[ix++] = '+'; | |
229 | } | |
230 | #endif | |
231 | else { | |
232 | if (result == O_WRONLY) | |
233 | mode[ix++] = 'w'; | |
234 | else { | |
235 | mode[ix++] = 'r'; | |
236 | mode[ix++] = '+'; | |
237 | } | |
238 | } | |
239 | if (rawmode & O_BINARY) | |
240 | mode[ix++] = 'b'; | |
241 | mode[ix] = '\0'; | |
242 | return ptype; | |
243 | } | |
244 | ||
eb73beca NIS |
245 | #ifndef PERLIO_LAYERS |
246 | int | |
247 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
248 | { | |
6874a2de NIS |
249 | if (!names || !*names |
250 | || strEQ(names, ":crlf") | |
251 | || strEQ(names, ":raw") | |
252 | || strEQ(names, ":bytes") | |
253 | ) { | |
14a5cf38 JH |
254 | return 0; |
255 | } | |
256 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
257 | /* | |
71200d45 | 258 | * NOTREACHED |
14a5cf38 JH |
259 | */ |
260 | return -1; | |
eb73beca NIS |
261 | } |
262 | ||
13621cfb NIS |
263 | void |
264 | PerlIO_destruct(pTHX) | |
265 | { | |
266 | } | |
267 | ||
f5b9d040 NIS |
268 | int |
269 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
270 | { | |
92bff44d | 271 | #ifdef USE_SFIO |
8772537c AL |
272 | PERL_UNUSED_ARG(iotype); |
273 | PERL_UNUSED_ARG(mode); | |
274 | PERL_UNUSED_ARG(names); | |
14a5cf38 | 275 | return 1; |
92bff44d | 276 | #else |
14a5cf38 | 277 | return perlsio_binmode(fp, iotype, mode); |
92bff44d | 278 | #endif |
f5b9d040 | 279 | } |
60382766 | 280 | |
e0fa5af2 | 281 | PerlIO * |
ecdeb87c | 282 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 283 | { |
a0fd4948 | 284 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
285 | return NULL; |
286 | #else | |
287 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 288 | return PerlSIO_fdupopen(f); |
0553478e | 289 | #else |
30753f56 NIS |
290 | #ifdef WIN32 |
291 | return win32_fdupopen(f); | |
292 | #else | |
e0fa5af2 | 293 | if (f) { |
504618e9 | 294 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 295 | if (fd >= 0) { |
06c7082d | 296 | char mode[8]; |
a5936e02 | 297 | #ifdef DJGPP |
dcda55fc AL |
298 | const int omode = djgpp_get_stream_mode(f); |
299 | #else | |
300 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 301 | #endif |
06c7082d | 302 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 303 | /* the r+ is a hack */ |
06c7082d | 304 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
305 | } |
306 | return NULL; | |
307 | } | |
308 | else { | |
93189314 | 309 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 310 | } |
7114a2d2 | 311 | #endif |
e0fa5af2 | 312 | return NULL; |
0553478e | 313 | #endif |
30753f56 | 314 | #endif |
e0fa5af2 NIS |
315 | } |
316 | ||
317 | ||
14a5cf38 | 318 | /* |
71200d45 | 319 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 320 | */ |
ee518936 NIS |
321 | |
322 | PerlIO * | |
14a5cf38 JH |
323 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
324 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
325 | { | |
7cf31beb NIS |
326 | if (narg) { |
327 | if (narg > 1) { | |
3b8752bb | 328 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 329 | } |
14a5cf38 JH |
330 | if (*args == &PL_sv_undef) |
331 | return PerlIO_tmpfile(); | |
332 | else { | |
e62f0680 | 333 | const char *name = SvPV_nolen_const(*args); |
3b6c1aba | 334 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
335 | fd = PerlLIO_open3(name, imode, perm); |
336 | if (fd >= 0) | |
de009b76 | 337 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
338 | } |
339 | else if (old) { | |
340 | return PerlIO_reopen(name, mode, old); | |
341 | } | |
342 | else { | |
343 | return PerlIO_open(name, mode); | |
344 | } | |
345 | } | |
346 | } | |
347 | else { | |
348 | return PerlIO_fdopen(fd, (char *) mode); | |
349 | } | |
350 | return NULL; | |
ee518936 NIS |
351 | } |
352 | ||
0c4f7ff0 NIS |
353 | XS(XS_PerlIO__Layer__find) |
354 | { | |
14a5cf38 JH |
355 | dXSARGS; |
356 | if (items < 2) | |
357 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
358 | else { | |
dcda55fc | 359 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
360 | ST(0) = (strEQ(name, "crlf") |
361 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
362 | XSRETURN(1); | |
363 | } | |
0c4f7ff0 NIS |
364 | } |
365 | ||
366 | ||
367 | void | |
368 | Perl_boot_core_PerlIO(pTHX) | |
369 | { | |
14a5cf38 | 370 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
371 | } |
372 | ||
ac27b0f5 NIS |
373 | #endif |
374 | ||
32e30700 | 375 | |
6f9d8c32 | 376 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
377 | |
378 | void | |
e8632036 | 379 | PerlIO_init(pTHX) |
760ac839 | 380 | { |
96a5add6 | 381 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
382 | /* |
383 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 384 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 385 | * that may be required by loadable extensions e.g. for |
71200d45 | 386 | * FileHandle::tmpfile |
14a5cf38 | 387 | */ |
760ac839 LW |
388 | } |
389 | ||
33dcbb9a | 390 | #undef PerlIO_tmpfile |
391 | PerlIO * | |
8ac85365 | 392 | PerlIO_tmpfile(void) |
33dcbb9a | 393 | { |
14a5cf38 | 394 | return tmpfile(); |
33dcbb9a | 395 | } |
396 | ||
22569500 | 397 | #else /* PERLIO_IS_STDIO */ |
760ac839 LW |
398 | |
399 | #ifdef USE_SFIO | |
400 | ||
401 | #undef HAS_FSETPOS | |
402 | #undef HAS_FGETPOS | |
403 | ||
14a5cf38 JH |
404 | /* |
405 | * This section is just to make sure these functions get pulled in from | |
71200d45 | 406 | * libsfio.a |
14a5cf38 | 407 | */ |
760ac839 LW |
408 | |
409 | #undef PerlIO_tmpfile | |
410 | PerlIO * | |
c78749f2 | 411 | PerlIO_tmpfile(void) |
760ac839 | 412 | { |
14a5cf38 | 413 | return sftmp(0); |
760ac839 LW |
414 | } |
415 | ||
416 | void | |
e8632036 | 417 | PerlIO_init(pTHX) |
760ac839 | 418 | { |
96a5add6 | 419 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
420 | /* |
421 | * Force this file to be included in perl binary. Which allows this | |
422 | * file to force inclusion of other functions that may be required by | |
71200d45 | 423 | * loadable extensions e.g. for FileHandle::tmpfile |
14a5cf38 | 424 | */ |
760ac839 | 425 | |
14a5cf38 | 426 | /* |
71200d45 | 427 | * Hack sfio does its own 'autoflush' on stdout in common cases. Flush |
14a5cf38 | 428 | * results in a lot of lseek()s to regular files and lot of small |
71200d45 | 429 | * writes to pipes. |
14a5cf38 JH |
430 | */ |
431 | sfset(sfstdout, SF_SHARE, 0); | |
760ac839 LW |
432 | } |
433 | ||
b9d6bf13 | 434 | /* This is not the reverse of PerlIO_exportFILE(), PerlIO_releaseFILE() is. */ |
92bff44d | 435 | PerlIO * |
4b069b44 | 436 | PerlIO_importFILE(FILE *stdio, const char *mode) |
92bff44d | 437 | { |
de009b76 | 438 | const int fd = fileno(stdio); |
4b069b44 | 439 | if (!mode || !*mode) { |
81428673 | 440 | mode = "r+"; |
4b069b44 NIS |
441 | } |
442 | return PerlIO_fdopen(fd, mode); | |
92bff44d NIS |
443 | } |
444 | ||
445 | FILE * | |
446 | PerlIO_findFILE(PerlIO *pio) | |
447 | { | |
de009b76 AL |
448 | const int fd = PerlIO_fileno(pio); |
449 | FILE * const f = fdopen(fd, "r+"); | |
14a5cf38 JH |
450 | PerlIO_flush(pio); |
451 | if (!f && errno == EINVAL) | |
452 | f = fdopen(fd, "w"); | |
453 | if (!f && errno == EINVAL) | |
454 | f = fdopen(fd, "r"); | |
455 | return f; | |
92bff44d NIS |
456 | } |
457 | ||
458 | ||
22569500 | 459 | #else /* USE_SFIO */ |
6f9d8c32 | 460 | /*======================================================================================*/ |
14a5cf38 | 461 | /* |
71200d45 | 462 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 463 | */ |
760ac839 | 464 | |
76ced9ad NIS |
465 | #include "perliol.h" |
466 | ||
14a5cf38 JH |
467 | /* |
468 | * We _MUST_ have <unistd.h> if we are using lseek() and may have large | |
71200d45 | 469 | * files |
14a5cf38 | 470 | */ |
02f66e2f NIS |
471 | #ifdef I_UNISTD |
472 | #include <unistd.h> | |
473 | #endif | |
06da4f11 NIS |
474 | #ifdef HAS_MMAP |
475 | #include <sys/mman.h> | |
476 | #endif | |
477 | ||
6f9d8c32 | 478 | void |
14a5cf38 JH |
479 | PerlIO_debug(const char *fmt, ...) |
480 | { | |
14a5cf38 JH |
481 | va_list ap; |
482 | dSYS; | |
483 | va_start(ap, fmt); | |
582588d2 NC |
484 | if (!PL_perlio_debug_fd) { |
485 | if (!PL_tainting && PL_uid == PL_euid && PL_gid == PL_egid) { | |
486 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); | |
487 | if (s && *s) | |
488 | PL_perlio_debug_fd | |
489 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
490 | else | |
491 | PL_perlio_debug_fd = -1; | |
492 | } else { | |
493 | /* tainting or set*id, so ignore the environment, and ensure we | |
494 | skip these tests next time through. */ | |
27da23d5 | 495 | PL_perlio_debug_fd = -1; |
582588d2 | 496 | } |
14a5cf38 | 497 | } |
27da23d5 | 498 | if (PL_perlio_debug_fd > 0) { |
14a5cf38 | 499 | dTHX; |
70ace5da | 500 | #ifdef USE_ITHREADS |
dcda55fc | 501 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
502 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
503 | char buffer[1024]; | |
1208b3dd JH |
504 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
505 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
506 | PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); | |
70ace5da | 507 | #else |
dcda55fc AL |
508 | const char *s = CopFILE(PL_curcop); |
509 | STRLEN len; | |
550e2ce0 NC |
510 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
511 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
512 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
513 | ||
b83604b4 | 514 | s = SvPV_const(sv, len); |
27da23d5 | 515 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 516 | SvREFCNT_dec(sv); |
70ace5da | 517 | #endif |
14a5cf38 JH |
518 | } |
519 | va_end(ap); | |
6f9d8c32 NIS |
520 | } |
521 | ||
9e353e3b NIS |
522 | /*--------------------------------------------------------------------------------------*/ |
523 | ||
14a5cf38 | 524 | /* |
71200d45 | 525 | * Inner level routines |
14a5cf38 | 526 | */ |
9e353e3b | 527 | |
14a5cf38 | 528 | /* |
71200d45 | 529 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 530 | */ |
05d1247b | 531 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 532 | |
760ac839 | 533 | PerlIO * |
5f1a76d0 | 534 | PerlIO_allocate(pTHX) |
6f9d8c32 | 535 | { |
97aff369 | 536 | dVAR; |
14a5cf38 | 537 | /* |
71200d45 | 538 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 JH |
539 | */ |
540 | PerlIO **last; | |
541 | PerlIO *f; | |
a1ea730d | 542 | last = &PL_perlio; |
14a5cf38 JH |
543 | while ((f = *last)) { |
544 | int i; | |
545 | last = (PerlIO **) (f); | |
546 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
547 | if (!*++f) { | |
548 | return f; | |
549 | } | |
550 | } | |
551 | } | |
a02a5408 | 552 | Newxz(f,PERLIO_TABLE_SIZE,PerlIO); |
14a5cf38 JH |
553 | if (!f) { |
554 | return NULL; | |
555 | } | |
556 | *last = f; | |
557 | return f + 1; | |
05d1247b NIS |
558 | } |
559 | ||
a1ea730d NIS |
560 | #undef PerlIO_fdupopen |
561 | PerlIO * | |
ecdeb87c | 562 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 563 | { |
04892f78 | 564 | if (PerlIOValid(f)) { |
de009b76 | 565 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 566 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
567 | if (tab && tab->Dup) |
568 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
569 | else { |
570 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
571 | } | |
a1ea730d | 572 | } |
210e727c JH |
573 | else |
574 | SETERRNO(EBADF, SS_IVCHAN); | |
575 | ||
576 | return NULL; | |
a1ea730d NIS |
577 | } |
578 | ||
579 | void | |
5f1a76d0 | 580 | PerlIO_cleantable(pTHX_ PerlIO **tablep) |
05d1247b | 581 | { |
dcda55fc | 582 | PerlIO * const table = *tablep; |
14a5cf38 JH |
583 | if (table) { |
584 | int i; | |
585 | PerlIO_cleantable(aTHX_(PerlIO **) & (table[0])); | |
586 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { | |
dcda55fc | 587 | PerlIO * const f = table + i; |
14a5cf38 JH |
588 | if (*f) { |
589 | PerlIO_close(f); | |
590 | } | |
591 | } | |
3a1ee7e8 | 592 | Safefree(table); |
14a5cf38 | 593 | *tablep = NULL; |
05d1247b | 594 | } |
05d1247b NIS |
595 | } |
596 | ||
fcf2db38 NIS |
597 | |
598 | PerlIO_list_t * | |
3a1ee7e8 | 599 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 600 | { |
14a5cf38 | 601 | PerlIO_list_t *list; |
96a5add6 | 602 | PERL_UNUSED_CONTEXT; |
a02a5408 | 603 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
604 | list->refcnt = 1; |
605 | return list; | |
fcf2db38 NIS |
606 | } |
607 | ||
608 | void | |
3a1ee7e8 | 609 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 610 | { |
14a5cf38 JH |
611 | if (list) { |
612 | if (--list->refcnt == 0) { | |
613 | if (list->array) { | |
14a5cf38 JH |
614 | IV i; |
615 | for (i = 0; i < list->cur; i++) { | |
616 | if (list->array[i].arg) | |
617 | SvREFCNT_dec(list->array[i].arg); | |
618 | } | |
619 | Safefree(list->array); | |
620 | } | |
621 | Safefree(list); | |
622 | } | |
623 | } | |
fcf2db38 NIS |
624 | } |
625 | ||
626 | void | |
3a1ee7e8 | 627 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 628 | { |
97aff369 | 629 | dVAR; |
334e202e | 630 | PerlIO_pair_t *p; |
b37c2d43 AL |
631 | PERL_UNUSED_CONTEXT; |
632 | ||
14a5cf38 JH |
633 | if (list->cur >= list->len) { |
634 | list->len += 8; | |
635 | if (list->array) | |
636 | Renew(list->array, list->len, PerlIO_pair_t); | |
637 | else | |
a02a5408 | 638 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
639 | } |
640 | p = &(list->array[list->cur++]); | |
641 | p->funcs = funcs; | |
642 | if ((p->arg = arg)) { | |
f84c484e | 643 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 644 | } |
fcf2db38 NIS |
645 | } |
646 | ||
3a1ee7e8 NIS |
647 | PerlIO_list_t * |
648 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
649 | { | |
b37c2d43 | 650 | PerlIO_list_t *list = NULL; |
694c95cf JH |
651 | if (proto) { |
652 | int i; | |
653 | list = PerlIO_list_alloc(aTHX); | |
654 | for (i=0; i < proto->cur; i++) { | |
a951d81d BL |
655 | SV *arg = proto->array[i].arg; |
656 | #ifdef sv_dup | |
657 | if (arg && param) | |
658 | arg = sv_dup(arg, param); | |
659 | #else | |
660 | PERL_UNUSED_ARG(param); | |
661 | #endif | |
694c95cf JH |
662 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
663 | } | |
3a1ee7e8 NIS |
664 | } |
665 | return list; | |
666 | } | |
4a4a6116 | 667 | |
05d1247b | 668 | void |
3a1ee7e8 | 669 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 670 | { |
3aaf42a7 | 671 | #ifdef USE_ITHREADS |
3a1ee7e8 NIS |
672 | PerlIO **table = &proto->Iperlio; |
673 | PerlIO *f; | |
674 | PL_perlio = NULL; | |
675 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
676 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
677 | PerlIO_allocate(aTHX); /* root slot is never used */ | |
a25429c6 | 678 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
679 | while ((f = *table)) { |
680 | int i; | |
681 | table = (PerlIO **) (f++); | |
682 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
683 | if (*f) { | |
93a8090d | 684 | (void) fp_dup(f, 0, param); |
3a1ee7e8 NIS |
685 | } |
686 | f++; | |
687 | } | |
688 | } | |
1b6737cc | 689 | #else |
a25429c6 | 690 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
691 | PERL_UNUSED_ARG(proto); |
692 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 693 | #endif |
9a6404c5 DM |
694 | } |
695 | ||
696 | void | |
13621cfb NIS |
697 | PerlIO_destruct(pTHX) |
698 | { | |
97aff369 | 699 | dVAR; |
a1ea730d | 700 | PerlIO **table = &PL_perlio; |
14a5cf38 | 701 | PerlIO *f; |
694c95cf | 702 | #ifdef USE_ITHREADS |
a25429c6 | 703 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 704 | #endif |
14a5cf38 JH |
705 | while ((f = *table)) { |
706 | int i; | |
707 | table = (PerlIO **) (f++); | |
708 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
709 | PerlIO *x = f; | |
dcda55fc | 710 | const PerlIOl *l; |
14a5cf38 JH |
711 | while ((l = *x)) { |
712 | if (l->tab->kind & PERLIO_K_DESTRUCT) { | |
713 | PerlIO_debug("Destruct popping %s\n", l->tab->name); | |
714 | PerlIO_flush(x); | |
715 | PerlIO_pop(aTHX_ x); | |
716 | } | |
717 | else { | |
718 | x = PerlIONext(x); | |
719 | } | |
720 | } | |
721 | f++; | |
722 | } | |
723 | } | |
13621cfb NIS |
724 | } |
725 | ||
726 | void | |
a999f61b | 727 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 728 | { |
dcda55fc | 729 | const PerlIOl *l = *f; |
14a5cf38 | 730 | if (l) { |
fe5a182c | 731 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, l->tab->name); |
14a5cf38 JH |
732 | if (l->tab->Popped) { |
733 | /* | |
734 | * If popped returns non-zero do not free its layer structure | |
735 | * it has either done so itself, or it is shared and still in | |
71200d45 | 736 | * use |
14a5cf38 | 737 | */ |
f62ce20a | 738 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
739 | return; |
740 | } | |
b47cad08 | 741 | *f = l->next; |
3a1ee7e8 | 742 | Safefree(l); |
a8c08ecd | 743 | } |
6f9d8c32 NIS |
744 | } |
745 | ||
39f7a870 JH |
746 | /* Return as an array the stack of layers on a filehandle. Note that |
747 | * the stack is returned top-first in the array, and there are three | |
748 | * times as many array elements as there are layers in the stack: the | |
749 | * first element of a layer triplet is the name, the second one is the | |
750 | * arguments, and the third one is the flags. */ | |
751 | ||
752 | AV * | |
753 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
754 | { | |
97aff369 | 755 | dVAR; |
dcda55fc | 756 | AV * const av = newAV(); |
39f7a870 | 757 | |
dcda55fc AL |
758 | if (PerlIOValid(f)) { |
759 | PerlIOl *l = PerlIOBase(f); | |
760 | ||
761 | while (l) { | |
92e45a3e NC |
762 | /* There is some collusion in the implementation of |
763 | XS_PerlIO_get_layers - it knows that name and flags are | |
764 | generated as fresh SVs here, and takes advantage of that to | |
765 | "copy" them by taking a reference. If it changes here, it needs | |
766 | to change there too. */ | |
dcda55fc AL |
767 | SV * const name = l->tab && l->tab->name ? |
768 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
769 | SV * const arg = l->tab && l->tab->Getarg ? | |
770 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
771 | av_push(av, name); | |
772 | av_push(av, arg); | |
773 | av_push(av, newSViv((IV)l->flags)); | |
774 | l = l->next; | |
775 | } | |
776 | } | |
39f7a870 | 777 | |
dcda55fc | 778 | return av; |
39f7a870 JH |
779 | } |
780 | ||
9e353e3b | 781 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 782 | /* |
71200d45 | 783 | * XS Interface for perl code |
14a5cf38 | 784 | */ |
9e353e3b | 785 | |
fcf2db38 | 786 | PerlIO_funcs * |
2edd7e44 | 787 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 788 | { |
27da23d5 | 789 | dVAR; |
14a5cf38 JH |
790 | IV i; |
791 | if ((SSize_t) len <= 0) | |
792 | len = strlen(name); | |
3a1ee7e8 | 793 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 794 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 795 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 796 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
797 | return f; |
798 | } | |
799 | } | |
3a1ee7e8 NIS |
800 | if (load && PL_subname && PL_def_layerlist |
801 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
802 | if (PL_in_load_module) { |
803 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
804 | return NULL; | |
805 | } else { | |
396482e1 | 806 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 807 | SV * const layer = newSVpvn(name, len); |
780a5241 | 808 | CV * const cv = Perl_get_cvn_flags(aTHX_ STR_WITH_LEN("PerlIO::Layer::NoWarnings"), 0); |
46c461b5 | 809 | ENTER; |
d7a09b41 | 810 | SAVEINT(PL_in_load_module); |
c9bca74a | 811 | if (cv) { |
9cfa90c0 | 812 | SAVEGENERICSV(PL_warnhook); |
b37c2d43 | 813 | PL_warnhook = (SV *) (SvREFCNT_inc_simple_NN(cv)); |
c9bca74a | 814 | } |
d7a09b41 SR |
815 | PL_in_load_module++; |
816 | /* | |
817 | * The two SVs are magically freed by load_module | |
818 | */ | |
a0714e2c | 819 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
820 | PL_in_load_module--; |
821 | LEAVE; | |
822 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
823 | } | |
14a5cf38 JH |
824 | } |
825 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
826 | return NULL; | |
f3862f8b NIS |
827 | } |
828 | ||
2a1bc955 | 829 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
830 | |
831 | static int | |
832 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
833 | { | |
14a5cf38 | 834 | if (SvROK(sv)) { |
dcda55fc AL |
835 | IO * const io = GvIOn((GV *) SvRV(sv)); |
836 | PerlIO * const ifp = IoIFP(io); | |
837 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
838 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
839 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
840 | } |
841 | return 0; | |
b13b2135 NIS |
842 | } |
843 | ||
844 | static int | |
845 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
846 | { | |
14a5cf38 | 847 | if (SvROK(sv)) { |
dcda55fc AL |
848 | IO * const io = GvIOn((GV *) SvRV(sv)); |
849 | PerlIO * const ifp = IoIFP(io); | |
850 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
851 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
852 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
853 | } |
854 | return 0; | |
b13b2135 NIS |
855 | } |
856 | ||
857 | static int | |
858 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
859 | { | |
be2597df | 860 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 861 | return 0; |
b13b2135 NIS |
862 | } |
863 | ||
864 | static int | |
865 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
866 | { | |
be2597df | 867 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 868 | return 0; |
b13b2135 NIS |
869 | } |
870 | ||
871 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
872 | perlio_mg_get, |
873 | perlio_mg_set, | |
22569500 | 874 | NULL, /* len */ |
14a5cf38 JH |
875 | perlio_mg_clear, |
876 | perlio_mg_free | |
b13b2135 NIS |
877 | }; |
878 | ||
879 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
880 | { | |
14a5cf38 | 881 | dXSARGS; |
dcda55fc AL |
882 | SV * const sv = SvRV(ST(1)); |
883 | AV * const av = newAV(); | |
14a5cf38 JH |
884 | MAGIC *mg; |
885 | int count = 0; | |
886 | int i; | |
887 | sv_magic(sv, (SV *) av, PERL_MAGIC_ext, NULL, 0); | |
888 | SvRMAGICAL_off(sv); | |
889 | mg = mg_find(sv, PERL_MAGIC_ext); | |
890 | mg->mg_virtual = &perlio_vtab; | |
891 | mg_magical(sv); | |
be2597df | 892 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
893 | for (i = 2; i < items; i++) { |
894 | STRLEN len; | |
dcda55fc AL |
895 | const char * const name = SvPV_const(ST(i), len); |
896 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 897 | if (layer) { |
b37c2d43 | 898 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
899 | } |
900 | else { | |
901 | ST(count) = ST(i); | |
902 | count++; | |
903 | } | |
904 | } | |
905 | SvREFCNT_dec(av); | |
906 | XSRETURN(count); | |
907 | } | |
908 | ||
22569500 | 909 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 910 | |
e3f3bf95 NIS |
911 | SV * |
912 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 913 | { |
da51bb9b | 914 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 915 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 916 | return sv; |
e3f3bf95 NIS |
917 | } |
918 | ||
5ca1d77f | 919 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 920 | { |
37725cdc | 921 | /* This is used as a %SIG{__WARN__} handler to supress warnings |
c9bca74a NIS |
922 | during loading of layers. |
923 | */ | |
97aff369 | 924 | dVAR; |
c9bca74a | 925 | dXSARGS; |
58c0efa5 | 926 | PERL_UNUSED_ARG(cv); |
c9bca74a | 927 | if (items) |
e62f0680 | 928 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
929 | XSRETURN(0); |
930 | } | |
931 | ||
5ca1d77f | 932 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 933 | { |
97aff369 | 934 | dVAR; |
14a5cf38 | 935 | dXSARGS; |
58c0efa5 | 936 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
937 | if (items < 2) |
938 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
939 | else { | |
de009b76 | 940 | STRLEN len; |
46c461b5 | 941 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 942 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 943 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
944 | ST(0) = |
945 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
946 | &PL_sv_undef; | |
947 | XSRETURN(1); | |
948 | } | |
0c4f7ff0 NIS |
949 | } |
950 | ||
e3f3bf95 NIS |
951 | void |
952 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
953 | { | |
97aff369 | 954 | dVAR; |
3a1ee7e8 NIS |
955 | if (!PL_known_layers) |
956 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 957 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 958 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
959 | } |
960 | ||
1141d9f8 | 961 | int |
fcf2db38 | 962 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 963 | { |
97aff369 | 964 | dVAR; |
14a5cf38 JH |
965 | if (names) { |
966 | const char *s = names; | |
967 | while (*s) { | |
968 | while (isSPACE(*s) || *s == ':') | |
969 | s++; | |
970 | if (*s) { | |
971 | STRLEN llen = 0; | |
972 | const char *e = s; | |
bd61b366 | 973 | const char *as = NULL; |
14a5cf38 JH |
974 | STRLEN alen = 0; |
975 | if (!isIDFIRST(*s)) { | |
976 | /* | |
977 | * Message is consistent with how attribute lists are | |
978 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 979 | * seen as an invalid separator character. |
14a5cf38 | 980 | */ |
de009b76 | 981 | const char q = ((*s == '\'') ? '"' : '\''); |
99ef548b | 982 | if (ckWARN(WARN_LAYER)) |
22569500 | 983 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
b4581f09 | 984 | "Invalid separator character %c%c%c in PerlIO layer specification %s", |
1e616cf5 | 985 | q, *s, q, s); |
93189314 | 986 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
987 | return -1; |
988 | } | |
989 | do { | |
990 | e++; | |
991 | } while (isALNUM(*e)); | |
992 | llen = e - s; | |
993 | if (*e == '(') { | |
994 | int nesting = 1; | |
995 | as = ++e; | |
996 | while (nesting) { | |
997 | switch (*e++) { | |
998 | case ')': | |
999 | if (--nesting == 0) | |
1000 | alen = (e - 1) - as; | |
1001 | break; | |
1002 | case '(': | |
1003 | ++nesting; | |
1004 | break; | |
1005 | case '\\': | |
1006 | /* | |
1007 | * It's a nul terminated string, not allowed | |
1008 | * to \ the terminating null. Anything other | |
71200d45 | 1009 | * character is passed over. |
14a5cf38 JH |
1010 | */ |
1011 | if (*e++) { | |
1012 | break; | |
1013 | } | |
1014 | /* | |
71200d45 | 1015 | * Drop through |
14a5cf38 JH |
1016 | */ |
1017 | case '\0': | |
1018 | e--; | |
22569500 NIS |
1019 | if (ckWARN(WARN_LAYER)) |
1020 | Perl_warner(aTHX_ packWARN(WARN_LAYER), | |
b4581f09 | 1021 | "Argument list not closed for PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1022 | (int) (e - s), s); |
1023 | return -1; | |
1024 | default: | |
1025 | /* | |
71200d45 | 1026 | * boring. |
14a5cf38 JH |
1027 | */ |
1028 | break; | |
1029 | } | |
1030 | } | |
1031 | } | |
1032 | if (e > s) { | |
46c461b5 | 1033 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1034 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1035 | if (layer) { | |
a951d81d BL |
1036 | SV *arg = NULL; |
1037 | if (as) | |
1038 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1039 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d BL |
1040 | (arg) ? arg : &PL_sv_undef); |
1041 | if (arg) | |
1042 | SvREFCNT_dec(arg); | |
14a5cf38 JH |
1043 | } |
1044 | else { | |
041457d9 | 1045 | if (ckWARN(WARN_LAYER)) |
b4581f09 | 1046 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1047 | (int) llen, s); |
1048 | return -1; | |
1049 | } | |
1050 | } | |
1051 | s = e; | |
1052 | } | |
1053 | } | |
1054 | } | |
1055 | return 0; | |
1141d9f8 NIS |
1056 | } |
1057 | ||
dfebf958 | 1058 | void |
fcf2db38 | 1059 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1060 | { |
97aff369 | 1061 | dVAR; |
27da23d5 | 1062 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1063 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1064 | tab = &PerlIO_crlf; |
846be114 | 1065 | #else |
6ce75a77 | 1066 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1067 | tab = &PerlIO_stdio; |
846be114 | 1068 | #endif |
14a5cf38 | 1069 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1070 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1071 | &PL_sv_undef); |
dfebf958 NIS |
1072 | } |
1073 | ||
e3f3bf95 | 1074 | SV * |
14a5cf38 | 1075 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1076 | { |
14a5cf38 | 1077 | return av->array[n].arg; |
e3f3bf95 NIS |
1078 | } |
1079 | ||
f3862f8b | 1080 | PerlIO_funcs * |
14a5cf38 | 1081 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1082 | { |
14a5cf38 JH |
1083 | if (n >= 0 && n < av->cur) { |
1084 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1085 | av->array[n].funcs->name); | |
1086 | return av->array[n].funcs; | |
1087 | } | |
1088 | if (!def) | |
1089 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1090 | return def; | |
e3f3bf95 NIS |
1091 | } |
1092 | ||
4ec2216f NIS |
1093 | IV |
1094 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1095 | { | |
8772537c AL |
1096 | PERL_UNUSED_ARG(mode); |
1097 | PERL_UNUSED_ARG(arg); | |
1098 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1099 | if (PerlIOValid(f)) { |
1100 | PerlIO_flush(f); | |
1101 | PerlIO_pop(aTHX_ f); | |
1102 | return 0; | |
1103 | } | |
1104 | return -1; | |
1105 | } | |
1106 | ||
27da23d5 | 1107 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1108 | sizeof(PerlIO_funcs), |
1109 | "pop", | |
1110 | 0, | |
1111 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1112 | PerlIOPop_pushed, | |
1113 | NULL, | |
1114 | NULL, | |
1115 | NULL, | |
1116 | NULL, | |
1117 | NULL, | |
1118 | NULL, | |
1119 | NULL, | |
1120 | NULL, | |
1121 | NULL, | |
1122 | NULL, | |
de009b76 AL |
1123 | NULL, |
1124 | NULL, | |
4ec2216f NIS |
1125 | NULL, /* flush */ |
1126 | NULL, /* fill */ | |
1127 | NULL, | |
1128 | NULL, | |
1129 | NULL, | |
1130 | NULL, | |
1131 | NULL, /* get_base */ | |
1132 | NULL, /* get_bufsiz */ | |
1133 | NULL, /* get_ptr */ | |
1134 | NULL, /* get_cnt */ | |
1135 | NULL, /* set_ptrcnt */ | |
1136 | }; | |
1137 | ||
fcf2db38 | 1138 | PerlIO_list_t * |
e3f3bf95 NIS |
1139 | PerlIO_default_layers(pTHX) |
1140 | { | |
97aff369 | 1141 | dVAR; |
3a1ee7e8 | 1142 | if (!PL_def_layerlist) { |
bd61b366 | 1143 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1144 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1145 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1146 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1147 | #if defined(WIN32) |
27da23d5 | 1148 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1149 | #if 0 |
14a5cf38 | 1150 | osLayer = &PerlIO_win32; |
0c4128ad | 1151 | #endif |
2f8118af | 1152 | #endif |
27da23d5 JH |
1153 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1154 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1155 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1156 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1157 | #ifdef HAS_MMAP |
27da23d5 | 1158 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1159 | #endif |
27da23d5 JH |
1160 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1161 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1162 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1163 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1164 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1165 | &PL_sv_undef); | |
1166 | if (s) { | |
3a1ee7e8 | 1167 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1168 | } |
1169 | else { | |
3a1ee7e8 | 1170 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1171 | } |
1141d9f8 | 1172 | } |
3a1ee7e8 NIS |
1173 | if (PL_def_layerlist->cur < 2) { |
1174 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1175 | } |
3a1ee7e8 | 1176 | return PL_def_layerlist; |
e3f3bf95 NIS |
1177 | } |
1178 | ||
0c4f7ff0 NIS |
1179 | void |
1180 | Perl_boot_core_PerlIO(pTHX) | |
1181 | { | |
1182 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1183 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1184 | __FILE__); | |
0c4f7ff0 | 1185 | #endif |
14a5cf38 | 1186 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1187 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1188 | } |
e3f3bf95 NIS |
1189 | |
1190 | PerlIO_funcs * | |
1191 | PerlIO_default_layer(pTHX_ I32 n) | |
1192 | { | |
97aff369 | 1193 | dVAR; |
46c461b5 | 1194 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1195 | if (n < 0) |
1196 | n += av->cur; | |
27da23d5 | 1197 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1198 | } |
1199 | ||
a999f61b NIS |
1200 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1201 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1202 | |
1203 | void | |
1141d9f8 | 1204 | PerlIO_stdstreams(pTHX) |
60382766 | 1205 | { |
97aff369 | 1206 | dVAR; |
a1ea730d | 1207 | if (!PL_perlio) { |
14a5cf38 JH |
1208 | PerlIO_allocate(aTHX); |
1209 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); | |
1210 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1211 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1212 | } | |
60382766 NIS |
1213 | } |
1214 | ||
1215 | PerlIO * | |
27da23d5 | 1216 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1217 | { |
2dc2558e NIS |
1218 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
1219 | mismatch: | |
1220 | Perl_croak(aTHX_ "Layer does not match this perl"); | |
1221 | } | |
1222 | if (tab->size) { | |
b464bac0 | 1223 | PerlIOl *l; |
2dc2558e NIS |
1224 | if (tab->size < sizeof(PerlIOl)) { |
1225 | goto mismatch; | |
1226 | } | |
1227 | /* Real layer with a data area */ | |
002e75cf JH |
1228 | if (f) { |
1229 | char *temp; | |
1230 | Newxz(temp, tab->size, char); | |
1231 | l = (PerlIOl*)temp; | |
1232 | if (l) { | |
1233 | l->next = *f; | |
1234 | l->tab = (PerlIO_funcs*) tab; | |
1235 | *f = l; | |
1236 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1237 | (void*)f, tab->name, | |
1238 | (mode) ? mode : "(Null)", (void*)arg); | |
1239 | if (*l->tab->Pushed && | |
1240 | (*l->tab->Pushed) | |
1241 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1242 | PerlIO_pop(aTHX_ f); | |
1243 | return NULL; | |
1244 | } | |
2dc2558e | 1245 | } |
002e75cf JH |
1246 | else |
1247 | return NULL; | |
2dc2558e NIS |
1248 | } |
1249 | } | |
1250 | else if (f) { | |
1251 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1252 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1253 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1254 | if (tab->Pushed && |
27da23d5 | 1255 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1256 | return NULL; |
14a5cf38 JH |
1257 | } |
1258 | } | |
1259 | return f; | |
60382766 NIS |
1260 | } |
1261 | ||
dfebf958 | 1262 | IV |
86e05cf2 NIS |
1263 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1264 | { | |
1265 | if (PerlIOValid(f)) { | |
1266 | /* Is layer suitable for raw stream ? */ | |
1267 | if (PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1268 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1269 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1270 | } | |
1271 | else { | |
1272 | /* Not suitable - pop it */ | |
1273 | PerlIO_pop(aTHX_ f); | |
1274 | } | |
1275 | return 0; | |
1276 | } | |
1277 | return -1; | |
1278 | } | |
1279 | ||
1280 | IV | |
2dc2558e | 1281 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1282 | { |
8772537c AL |
1283 | PERL_UNUSED_ARG(mode); |
1284 | PERL_UNUSED_ARG(arg); | |
1285 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1286 | |
04892f78 | 1287 | if (PerlIOValid(f)) { |
86e05cf2 | 1288 | PerlIO *t; |
de009b76 | 1289 | const PerlIOl *l; |
14a5cf38 | 1290 | PerlIO_flush(f); |
86e05cf2 NIS |
1291 | /* |
1292 | * Strip all layers that are not suitable for a raw stream | |
1293 | */ | |
1294 | t = f; | |
1295 | while (t && (l = *t)) { | |
1296 | if (l->tab->Binmode) { | |
1297 | /* Has a handler - normal case */ | |
1298 | if ((*l->tab->Binmode)(aTHX_ f) == 0) { | |
1299 | if (*t == l) { | |
1300 | /* Layer still there - move down a layer */ | |
1301 | t = PerlIONext(t); | |
1302 | } | |
1303 | } | |
1304 | else { | |
1305 | return -1; | |
1306 | } | |
14a5cf38 JH |
1307 | } |
1308 | else { | |
86e05cf2 NIS |
1309 | /* No handler - pop it */ |
1310 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1311 | } |
1312 | } | |
86e05cf2 NIS |
1313 | if (PerlIOValid(f)) { |
1314 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); | |
1315 | return 0; | |
1316 | } | |
14a5cf38 JH |
1317 | } |
1318 | return -1; | |
dfebf958 NIS |
1319 | } |
1320 | ||
ac27b0f5 | 1321 | int |
14a5cf38 | 1322 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1323 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1324 | { |
14a5cf38 JH |
1325 | int code = 0; |
1326 | while (n < max) { | |
8772537c | 1327 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1328 | if (tab) { |
1329 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1330 | code = -1; | |
1331 | break; | |
1332 | } | |
1333 | } | |
1334 | n++; | |
1335 | } | |
1336 | return code; | |
e3f3bf95 NIS |
1337 | } |
1338 | ||
1339 | int | |
ac27b0f5 NIS |
1340 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1341 | { | |
14a5cf38 | 1342 | int code = 0; |
53f1b6d2 | 1343 | if (f && names) { |
8772537c | 1344 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1345 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1346 | if (code == 0) { | |
d9dac8cd | 1347 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1348 | } |
3a1ee7e8 | 1349 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1350 | } |
14a5cf38 | 1351 | return code; |
ac27b0f5 NIS |
1352 | } |
1353 | ||
f3862f8b | 1354 | |
60382766 | 1355 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1356 | /* |
71200d45 | 1357 | * Given the abstraction above the public API functions |
14a5cf38 | 1358 | */ |
60382766 NIS |
1359 | |
1360 | int | |
f5b9d040 | 1361 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1362 | { |
68b5363f PD |
1363 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
1364 | (PerlIOBase(f)) ? PerlIOBase(f)->tab->name : "(Null)", | |
1365 | iotype, mode, (names) ? names : "(Null)"); | |
1366 | ||
03c0554d NIS |
1367 | if (names) { |
1368 | /* Do not flush etc. if (e.g.) switching encodings. | |
1369 | if a pushed layer knows it needs to flush lower layers | |
1370 | (for example :unix which is never going to call them) | |
1371 | it can do the flush when it is pushed. | |
1372 | */ | |
1373 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1374 | } | |
1375 | else { | |
86e05cf2 | 1376 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1377 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1378 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1379 | O_BINARY so we can look for it in mode. | |
1380 | */ | |
1381 | if (!(mode & O_BINARY)) { | |
1382 | /* Text mode */ | |
86e05cf2 NIS |
1383 | /* FIXME?: Looking down the layer stack seems wrong, |
1384 | but is a way of reaching past (say) an encoding layer | |
1385 | to flip CRLF-ness of the layer(s) below | |
1386 | */ | |
03c0554d NIS |
1387 | while (*f) { |
1388 | /* Perhaps we should turn on bottom-most aware layer | |
1389 | e.g. Ilya's idea that UNIX TTY could serve | |
1390 | */ | |
1391 | if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { | |
1392 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1393 | /* Not in text mode - flush any pending stuff and flip it */ | |
1394 | PerlIO_flush(f); | |
1395 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1396 | } | |
1397 | /* Only need to turn it on in one layer so we are done */ | |
1398 | return TRUE; | |
ed53a2bb | 1399 | } |
03c0554d | 1400 | f = PerlIONext(f); |
14a5cf38 | 1401 | } |
03c0554d NIS |
1402 | /* Not finding a CRLF aware layer presumably means we are binary |
1403 | which is not what was requested - so we failed | |
1404 | We _could_ push :crlf layer but so could caller | |
1405 | */ | |
1406 | return FALSE; | |
14a5cf38 | 1407 | } |
6ce75a77 | 1408 | #endif |
86e05cf2 NIS |
1409 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1410 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1411 | */ |
a0714e2c | 1412 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1413 | } |
f5b9d040 NIS |
1414 | } |
1415 | ||
f5b9d040 | 1416 | int |
e87a358a | 1417 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1418 | { |
37725cdc | 1419 | if (PerlIOValid(f)) { |
46c461b5 | 1420 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1421 | if (tab && tab->Close) |
1422 | return (*tab->Close)(aTHX_ f); | |
1423 | else | |
1424 | return PerlIOBase_close(aTHX_ f); | |
1425 | } | |
14a5cf38 | 1426 | else { |
93189314 | 1427 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1428 | return -1; |
1429 | } | |
76ced9ad NIS |
1430 | } |
1431 | ||
b931b1d9 | 1432 | int |
e87a358a | 1433 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1434 | { |
de009b76 | 1435 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1436 | while (PerlIOValid(f)) { |
1437 | PerlIO_pop(aTHX_ f); | |
f6c77cf1 | 1438 | } |
14a5cf38 | 1439 | return code; |
b931b1d9 NIS |
1440 | } |
1441 | ||
b931b1d9 | 1442 | int |
e87a358a | 1443 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1444 | { |
97aff369 | 1445 | dVAR; |
b32dd47e | 1446 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1447 | } |
1448 | ||
1141d9f8 | 1449 | |
fcf2db38 | 1450 | static PerlIO_funcs * |
2edd7e44 NIS |
1451 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1452 | { | |
97aff369 | 1453 | dVAR; |
14a5cf38 | 1454 | /* |
71200d45 | 1455 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1456 | */ |
75208dda RGS |
1457 | if (SvTYPE(sv) < SVt_PVAV) { |
1458 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); | |
1459 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1460 | * but could happen anyway in smaller installs or with PAR */ | |
1461 | if (!f && ckWARN(WARN_LAYER)) | |
1462 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); | |
1463 | return f; | |
1464 | } | |
14a5cf38 JH |
1465 | |
1466 | /* | |
71200d45 | 1467 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1468 | */ |
1469 | switch (SvTYPE(sv)) { | |
1470 | case SVt_PVAV: | |
6a245ed1 | 1471 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1472 | case SVt_PVHV: |
6a245ed1 | 1473 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1474 | case SVt_PVCV: |
6a245ed1 | 1475 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1476 | case SVt_PVGV: |
6a245ed1 | 1477 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1478 | default: |
1479 | return NULL; | |
14a5cf38 | 1480 | } |
2edd7e44 NIS |
1481 | } |
1482 | ||
fcf2db38 | 1483 | PerlIO_list_t * |
14a5cf38 JH |
1484 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1485 | const char *mode, int narg, SV **args) | |
1486 | { | |
97aff369 | 1487 | dVAR; |
14a5cf38 JH |
1488 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1489 | int incdef = 1; | |
a1ea730d | 1490 | if (!PL_perlio) |
14a5cf38 JH |
1491 | PerlIO_stdstreams(aTHX); |
1492 | if (narg) { | |
dcda55fc | 1493 | SV * const arg = *args; |
14a5cf38 | 1494 | /* |
71200d45 NIS |
1495 | * If it is a reference but not an object see if we have a handler |
1496 | * for it | |
14a5cf38 JH |
1497 | */ |
1498 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1499 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1500 | if (handler) { |
3a1ee7e8 NIS |
1501 | def = PerlIO_list_alloc(aTHX); |
1502 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1503 | incdef = 0; |
1504 | } | |
1505 | /* | |
e934609f | 1506 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1507 | * something sensible else we will just stringfy and open |
71200d45 | 1508 | * resulting string. |
14a5cf38 JH |
1509 | */ |
1510 | } | |
1511 | } | |
9fe371da | 1512 | if (!layers || !*layers) |
11bcd5da | 1513 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1514 | if (layers && *layers) { |
1515 | PerlIO_list_t *av; | |
1516 | if (incdef) { | |
a951d81d | 1517 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1518 | } |
1519 | else { | |
1520 | av = def; | |
1521 | } | |
0cff2cf3 NIS |
1522 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1523 | return av; | |
1524 | } | |
1525 | else { | |
1526 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1527 | return NULL; |
0cff2cf3 | 1528 | } |
14a5cf38 JH |
1529 | } |
1530 | else { | |
1531 | if (incdef) | |
1532 | def->refcnt++; | |
1533 | return def; | |
1534 | } | |
ee518936 NIS |
1535 | } |
1536 | ||
1537 | PerlIO * | |
14a5cf38 JH |
1538 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1539 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1540 | { | |
97aff369 | 1541 | dVAR; |
14a5cf38 JH |
1542 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1543 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1544 | if (!layers || !*layers) |
11bcd5da | 1545 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1546 | if (layers && *layers) |
1547 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1548 | } | |
1549 | } | |
1550 | else { | |
de009b76 | 1551 | PerlIO_list_t *layera; |
14a5cf38 JH |
1552 | IV n; |
1553 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1554 | if (PerlIOValid(f)) { |
14a5cf38 | 1555 | /* |
71200d45 NIS |
1556 | * This is "reopen" - it is not tested as perl does not use it |
1557 | * yet | |
14a5cf38 JH |
1558 | */ |
1559 | PerlIOl *l = *f; | |
3a1ee7e8 | 1560 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1561 | while (l) { |
a951d81d BL |
1562 | SV *arg = NULL; |
1563 | if (l->tab->Getarg) | |
1564 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); | |
1565 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1566 | (arg) ? arg : &PL_sv_undef); | |
1567 | if (arg) | |
1568 | SvREFCNT_dec(arg); | |
14a5cf38 JH |
1569 | l = *PerlIONext(&l); |
1570 | } | |
1571 | } | |
1572 | else { | |
1573 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1574 | if (!layera) { |
1575 | return NULL; | |
1576 | } | |
14a5cf38 JH |
1577 | } |
1578 | /* | |
71200d45 | 1579 | * Start at "top" of layer stack |
14a5cf38 JH |
1580 | */ |
1581 | n = layera->cur - 1; | |
1582 | while (n >= 0) { | |
46c461b5 | 1583 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1584 | if (t && t->Open) { |
1585 | tab = t; | |
1586 | break; | |
1587 | } | |
1588 | n--; | |
1589 | } | |
1590 | if (tab) { | |
1591 | /* | |
71200d45 | 1592 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1593 | */ |
7cf31beb | 1594 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1595 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1596 | } |
14a5cf38 | 1597 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1598 | tab->name, layers ? layers : "(Null)", mode, fd, |
1599 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1600 | if (tab->Open) |
1601 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1602 | f, narg, args); | |
1603 | else { | |
1604 | SETERRNO(EINVAL, LIB_INVARG); | |
1605 | f = NULL; | |
1606 | } | |
14a5cf38 JH |
1607 | if (f) { |
1608 | if (n + 1 < layera->cur) { | |
1609 | /* | |
1610 | * More layers above the one that we used to open - | |
71200d45 | 1611 | * apply them now |
14a5cf38 | 1612 | */ |
d9dac8cd NIS |
1613 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1614 | /* If pushing layers fails close the file */ | |
1615 | PerlIO_close(f); | |
14a5cf38 JH |
1616 | f = NULL; |
1617 | } | |
1618 | } | |
1619 | } | |
1620 | } | |
3a1ee7e8 | 1621 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1622 | } |
1623 | return f; | |
ee518936 | 1624 | } |
b931b1d9 NIS |
1625 | |
1626 | ||
9e353e3b | 1627 | SSize_t |
e87a358a | 1628 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1629 | { |
7918f24d NC |
1630 | PERL_ARGS_ASSERT_PERLIO_READ; |
1631 | ||
b32dd47e | 1632 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1633 | } |
1634 | ||
313ca112 | 1635 | SSize_t |
e87a358a | 1636 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1637 | { |
7918f24d NC |
1638 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1639 | ||
b32dd47e | 1640 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1641 | } |
1642 | ||
9e353e3b | 1643 | SSize_t |
e87a358a | 1644 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1645 | { |
7918f24d NC |
1646 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1647 | ||
b32dd47e | 1648 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1649 | } |
1650 | ||
6f9d8c32 | 1651 | int |
e87a358a | 1652 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1653 | { |
b32dd47e | 1654 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1655 | } |
1656 | ||
9e353e3b | 1657 | Off_t |
e87a358a | 1658 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1659 | { |
b32dd47e | 1660 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1661 | } |
1662 | ||
6f9d8c32 | 1663 | int |
e87a358a | 1664 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1665 | { |
97aff369 | 1666 | dVAR; |
14a5cf38 JH |
1667 | if (f) { |
1668 | if (*f) { | |
de009b76 | 1669 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1670 | |
1671 | if (tab && tab->Flush) | |
f62ce20a | 1672 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1673 | else |
1674 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1675 | } |
1676 | else { | |
fe5a182c | 1677 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1678 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1679 | return -1; |
1680 | } | |
1681 | } | |
1682 | else { | |
1683 | /* | |
1684 | * Is it good API design to do flush-all on NULL, a potentially | |
1685 | * errorneous input? Maybe some magical value (PerlIO* | |
1686 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1687 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1688 | * decisions? --jhi |
14a5cf38 | 1689 | */ |
a1ea730d | 1690 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1691 | int code = 0; |
1692 | while ((f = *table)) { | |
1693 | int i; | |
1694 | table = (PerlIO **) (f++); | |
1695 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1696 | if (*f && PerlIO_flush(f) != 0) | |
1697 | code = -1; | |
1698 | f++; | |
1699 | } | |
1700 | } | |
1701 | return code; | |
1702 | } | |
760ac839 LW |
1703 | } |
1704 | ||
a9c883f6 | 1705 | void |
f62ce20a | 1706 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1707 | { |
97aff369 | 1708 | dVAR; |
a1ea730d | 1709 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1710 | PerlIO *f; |
1711 | while ((f = *table)) { | |
1712 | int i; | |
1713 | table = (PerlIO **) (f++); | |
1714 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1715 | if (*f | |
1716 | && (PerlIOBase(f)-> | |
1717 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1718 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1719 | PerlIO_flush(f); | |
1720 | f++; | |
1721 | } | |
a9c883f6 | 1722 | } |
a9c883f6 NIS |
1723 | } |
1724 | ||
06da4f11 | 1725 | int |
e87a358a | 1726 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1727 | { |
b32dd47e | 1728 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1729 | } |
1730 | ||
f3862f8b NIS |
1731 | int |
1732 | PerlIO_isutf8(PerlIO *f) | |
1733 | { | |
1b7a0411 JH |
1734 | if (PerlIOValid(f)) |
1735 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1736 | else | |
1737 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1738 | |
1b7a0411 | 1739 | return -1; |
f3862f8b NIS |
1740 | } |
1741 | ||
6f9d8c32 | 1742 | int |
e87a358a | 1743 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1744 | { |
b32dd47e | 1745 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1746 | } |
1747 | ||
9e353e3b | 1748 | int |
e87a358a | 1749 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1750 | { |
b32dd47e | 1751 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1752 | } |
1753 | ||
9e353e3b | 1754 | void |
e87a358a | 1755 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1756 | { |
b32dd47e | 1757 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1758 | } |
1759 | ||
9e353e3b | 1760 | void |
e87a358a | 1761 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1762 | { |
b32dd47e | 1763 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1764 | } |
1765 | ||
9e353e3b NIS |
1766 | int |
1767 | PerlIO_has_base(PerlIO *f) | |
1768 | { | |
1b7a0411 | 1769 | if (PerlIOValid(f)) { |
46c461b5 | 1770 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1771 | |
1772 | if (tab) | |
1773 | return (tab->Get_base != NULL); | |
1774 | SETERRNO(EINVAL, LIB_INVARG); | |
1775 | } | |
1776 | else | |
1777 | SETERRNO(EBADF, SS_IVCHAN); | |
1778 | ||
1779 | return 0; | |
760ac839 LW |
1780 | } |
1781 | ||
9e353e3b NIS |
1782 | int |
1783 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1784 | { |
04892f78 | 1785 | if (PerlIOValid(f) && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) { |
46c461b5 | 1786 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1787 | |
1788 | if (tab) | |
1789 | return (tab->Set_ptrcnt != NULL); | |
1790 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1791 | } |
1b7a0411 JH |
1792 | else |
1793 | SETERRNO(EBADF, SS_IVCHAN); | |
1794 | ||
14a5cf38 | 1795 | return 0; |
9e353e3b NIS |
1796 | } |
1797 | ||
9e353e3b NIS |
1798 | int |
1799 | PerlIO_has_cntptr(PerlIO *f) | |
1800 | { | |
04892f78 | 1801 | if (PerlIOValid(f)) { |
46c461b5 | 1802 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1803 | |
1804 | if (tab) | |
1805 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1806 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1807 | } |
1b7a0411 JH |
1808 | else |
1809 | SETERRNO(EBADF, SS_IVCHAN); | |
1810 | ||
14a5cf38 | 1811 | return 0; |
9e353e3b NIS |
1812 | } |
1813 | ||
9e353e3b NIS |
1814 | int |
1815 | PerlIO_canset_cnt(PerlIO *f) | |
1816 | { | |
04892f78 | 1817 | if (PerlIOValid(f)) { |
46c461b5 | 1818 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1819 | |
1820 | if (tab) | |
1821 | return (tab->Set_ptrcnt != NULL); | |
1822 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1823 | } |
1b7a0411 JH |
1824 | else |
1825 | SETERRNO(EBADF, SS_IVCHAN); | |
1826 | ||
14a5cf38 | 1827 | return 0; |
760ac839 LW |
1828 | } |
1829 | ||
888911fc | 1830 | STDCHAR * |
e87a358a | 1831 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1832 | { |
b32dd47e | 1833 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1834 | } |
1835 | ||
9e353e3b | 1836 | int |
e87a358a | 1837 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1838 | { |
b32dd47e | 1839 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1840 | } |
1841 | ||
9e353e3b | 1842 | STDCHAR * |
e87a358a | 1843 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1844 | { |
b32dd47e | 1845 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1846 | } |
1847 | ||
05d1247b | 1848 | int |
e87a358a | 1849 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1850 | { |
b32dd47e | 1851 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1852 | } |
1853 | ||
9e353e3b | 1854 | void |
e87a358a | 1855 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1856 | { |
b32dd47e | 1857 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1858 | } |
1859 | ||
9e353e3b | 1860 | void |
e87a358a | 1861 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1862 | { |
b32dd47e | 1863 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1864 | } |
1865 | ||
4ec2216f | 1866 | |
9e353e3b | 1867 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1868 | /* |
71200d45 | 1869 | * utf8 and raw dummy layers |
14a5cf38 | 1870 | */ |
dfebf958 | 1871 | |
26fb694e | 1872 | IV |
2dc2558e | 1873 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1874 | { |
96a5add6 | 1875 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1876 | PERL_UNUSED_ARG(mode); |
1877 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1878 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1879 | if (tab->kind & PERLIO_K_UTF8) |
1880 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1881 | else | |
1882 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1883 | return 0; | |
1884 | } | |
1885 | return -1; | |
26fb694e NIS |
1886 | } |
1887 | ||
27da23d5 | 1888 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1889 | sizeof(PerlIO_funcs), |
14a5cf38 | 1890 | "utf8", |
2dc2558e | 1891 | 0, |
6874a2de | 1892 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1893 | PerlIOUtf8_pushed, |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
1901 | NULL, | |
1902 | NULL, | |
1903 | NULL, | |
de009b76 AL |
1904 | NULL, |
1905 | NULL, | |
22569500 NIS |
1906 | NULL, /* flush */ |
1907 | NULL, /* fill */ | |
14a5cf38 JH |
1908 | NULL, |
1909 | NULL, | |
1910 | NULL, | |
1911 | NULL, | |
22569500 NIS |
1912 | NULL, /* get_base */ |
1913 | NULL, /* get_bufsiz */ | |
1914 | NULL, /* get_ptr */ | |
1915 | NULL, /* get_cnt */ | |
1916 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1917 | }; |
1918 | ||
27da23d5 | 1919 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1920 | sizeof(PerlIO_funcs), |
14a5cf38 | 1921 | "bytes", |
2dc2558e | 1922 | 0, |
14a5cf38 JH |
1923 | PERLIO_K_DUMMY, |
1924 | PerlIOUtf8_pushed, | |
1925 | NULL, | |
1926 | NULL, | |
1927 | NULL, | |
1928 | NULL, | |
1929 | NULL, | |
1930 | NULL, | |
1931 | NULL, | |
1932 | NULL, | |
1933 | NULL, | |
1934 | NULL, | |
de009b76 AL |
1935 | NULL, |
1936 | NULL, | |
22569500 NIS |
1937 | NULL, /* flush */ |
1938 | NULL, /* fill */ | |
14a5cf38 JH |
1939 | NULL, |
1940 | NULL, | |
1941 | NULL, | |
1942 | NULL, | |
22569500 NIS |
1943 | NULL, /* get_base */ |
1944 | NULL, /* get_bufsiz */ | |
1945 | NULL, /* get_ptr */ | |
1946 | NULL, /* get_cnt */ | |
1947 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1948 | }; |
1949 | ||
1950 | PerlIO * | |
14a5cf38 JH |
1951 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1952 | IV n, const char *mode, int fd, int imode, int perm, | |
1953 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1954 | { |
8772537c AL |
1955 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1956 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1957 | if (tab && tab->Open) |
1958 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1959 | old, narg, args); | |
1960 | SETERRNO(EINVAL, LIB_INVARG); | |
1961 | return NULL; | |
dfebf958 NIS |
1962 | } |
1963 | ||
27da23d5 | 1964 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1965 | sizeof(PerlIO_funcs), |
14a5cf38 | 1966 | "raw", |
2dc2558e | 1967 | 0, |
14a5cf38 JH |
1968 | PERLIO_K_DUMMY, |
1969 | PerlIORaw_pushed, | |
1970 | PerlIOBase_popped, | |
1971 | PerlIORaw_open, | |
1972 | NULL, | |
1973 | NULL, | |
1974 | NULL, | |
1975 | NULL, | |
1976 | NULL, | |
1977 | NULL, | |
1978 | NULL, | |
1979 | NULL, | |
de009b76 AL |
1980 | NULL, |
1981 | NULL, | |
22569500 NIS |
1982 | NULL, /* flush */ |
1983 | NULL, /* fill */ | |
14a5cf38 JH |
1984 | NULL, |
1985 | NULL, | |
1986 | NULL, | |
1987 | NULL, | |
22569500 NIS |
1988 | NULL, /* get_base */ |
1989 | NULL, /* get_bufsiz */ | |
1990 | NULL, /* get_ptr */ | |
1991 | NULL, /* get_cnt */ | |
1992 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1993 | }; |
1994 | /*--------------------------------------------------------------------------------------*/ | |
1995 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1996 | /* |
71200d45 | 1997 | * "Methods" of the "base class" |
14a5cf38 | 1998 | */ |
9e353e3b NIS |
1999 | |
2000 | IV | |
f62ce20a | 2001 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2002 | { |
04892f78 | 2003 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
2004 | } |
2005 | ||
f5b9d040 | 2006 | char * |
81428673 | 2007 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
2008 | { |
2009 | char *s = buf; | |
81428673 | 2010 | if (PerlIOValid(f)) { |
de009b76 | 2011 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2012 | if (flags & PERLIO_F_APPEND) { |
2013 | *s++ = 'a'; | |
2014 | if (flags & PERLIO_F_CANREAD) { | |
2015 | *s++ = '+'; | |
2016 | } | |
14a5cf38 | 2017 | } |
81428673 NIS |
2018 | else if (flags & PERLIO_F_CANREAD) { |
2019 | *s++ = 'r'; | |
2020 | if (flags & PERLIO_F_CANWRITE) | |
2021 | *s++ = '+'; | |
2022 | } | |
2023 | else if (flags & PERLIO_F_CANWRITE) { | |
2024 | *s++ = 'w'; | |
2025 | if (flags & PERLIO_F_CANREAD) { | |
2026 | *s++ = '+'; | |
2027 | } | |
14a5cf38 | 2028 | } |
35990314 | 2029 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2030 | if (!(flags & PERLIO_F_CRLF)) |
2031 | *s++ = 'b'; | |
5f1a76d0 | 2032 | #endif |
81428673 | 2033 | } |
14a5cf38 JH |
2034 | *s = '\0'; |
2035 | return buf; | |
f5b9d040 NIS |
2036 | } |
2037 | ||
81428673 | 2038 | |
76ced9ad | 2039 | IV |
2dc2558e | 2040 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2041 | { |
de009b76 | 2042 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2043 | PERL_UNUSED_CONTEXT; |
8772537c | 2044 | PERL_UNUSED_ARG(arg); |
de009b76 | 2045 | |
14a5cf38 JH |
2046 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2047 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2048 | if (tab->Set_ptrcnt != NULL) | |
2049 | l->flags |= PERLIO_F_FASTGETS; | |
2050 | if (mode) { | |
3b6c1aba | 2051 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2052 | mode++; |
2053 | switch (*mode++) { | |
2054 | case 'r': | |
2055 | l->flags |= PERLIO_F_CANREAD; | |
2056 | break; | |
2057 | case 'a': | |
2058 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2059 | break; | |
2060 | case 'w': | |
2061 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2062 | break; | |
2063 | default: | |
93189314 | 2064 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2065 | return -1; |
2066 | } | |
2067 | while (*mode) { | |
2068 | switch (*mode++) { | |
2069 | case '+': | |
2070 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2071 | break; | |
2072 | case 'b': | |
2073 | l->flags &= ~PERLIO_F_CRLF; | |
2074 | break; | |
2075 | case 't': | |
2076 | l->flags |= PERLIO_F_CRLF; | |
2077 | break; | |
2078 | default: | |
93189314 | 2079 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2080 | return -1; |
2081 | } | |
2082 | } | |
2083 | } | |
2084 | else { | |
2085 | if (l->next) { | |
2086 | l->flags |= l->next->flags & | |
2087 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2088 | PERLIO_F_APPEND); | |
2089 | } | |
2090 | } | |
5e2ab84b | 2091 | #if 0 |
14a5cf38 | 2092 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2093 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2094 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2095 | #endif |
14a5cf38 | 2096 | return 0; |
76ced9ad NIS |
2097 | } |
2098 | ||
2099 | IV | |
f62ce20a | 2100 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2101 | { |
96a5add6 | 2102 | PERL_UNUSED_CONTEXT; |
8772537c | 2103 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2104 | return 0; |
760ac839 LW |
2105 | } |
2106 | ||
9e353e3b | 2107 | SSize_t |
f62ce20a | 2108 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2109 | { |
14a5cf38 | 2110 | /* |
71200d45 | 2111 | * Save the position as current head considers it |
14a5cf38 | 2112 | */ |
de009b76 | 2113 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2114 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2115 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2116 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2117 | } |
2118 | ||
f6c77cf1 | 2119 | SSize_t |
f62ce20a | 2120 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2121 | { |
14a5cf38 JH |
2122 | STDCHAR *buf = (STDCHAR *) vbuf; |
2123 | if (f) { | |
263df5f1 JH |
2124 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2125 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2126 | SETERRNO(EBADF, SS_IVCHAN); | |
2127 | return 0; | |
2128 | } | |
14a5cf38 | 2129 | while (count > 0) { |
93c2c2ec IZ |
2130 | get_cnt: |
2131 | { | |
14a5cf38 JH |
2132 | SSize_t avail = PerlIO_get_cnt(f); |
2133 | SSize_t take = 0; | |
2134 | if (avail > 0) | |
bb7a0f54 | 2135 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2136 | if (take > 0) { |
2137 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2138 | Copy(ptr, buf, take, STDCHAR); | |
2139 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2140 | count -= take; | |
2141 | buf += take; | |
93c2c2ec IZ |
2142 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2143 | goto get_cnt; | |
14a5cf38 JH |
2144 | } |
2145 | if (count > 0 && avail <= 0) { | |
2146 | if (PerlIO_fill(f) != 0) | |
2147 | break; | |
2148 | } | |
93c2c2ec | 2149 | } |
14a5cf38 JH |
2150 | } |
2151 | return (buf - (STDCHAR *) vbuf); | |
2152 | } | |
f6c77cf1 | 2153 | return 0; |
f6c77cf1 NIS |
2154 | } |
2155 | ||
9e353e3b | 2156 | IV |
f62ce20a | 2157 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2158 | { |
96a5add6 | 2159 | PERL_UNUSED_CONTEXT; |
8772537c | 2160 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2161 | return 0; |
9e353e3b NIS |
2162 | } |
2163 | ||
2164 | IV | |
f62ce20a | 2165 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2166 | { |
96a5add6 | 2167 | PERL_UNUSED_CONTEXT; |
8772537c | 2168 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2169 | return -1; |
06da4f11 NIS |
2170 | } |
2171 | ||
2172 | IV | |
f62ce20a | 2173 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2174 | { |
37725cdc NIS |
2175 | IV code = -1; |
2176 | if (PerlIOValid(f)) { | |
2177 | PerlIO *n = PerlIONext(f); | |
2178 | code = PerlIO_flush(f); | |
2179 | PerlIOBase(f)->flags &= | |
2180 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2181 | while (PerlIOValid(n)) { | |
de009b76 | 2182 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2183 | if (tab && tab->Close) { |
2184 | if ((*tab->Close)(aTHX_ n) != 0) | |
2185 | code = -1; | |
2186 | break; | |
2187 | } | |
2188 | else { | |
2189 | PerlIOBase(n)->flags &= | |
2190 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2191 | } | |
2192 | n = PerlIONext(n); | |
2193 | } | |
2194 | } | |
2195 | else { | |
2196 | SETERRNO(EBADF, SS_IVCHAN); | |
2197 | } | |
14a5cf38 | 2198 | return code; |
9e353e3b NIS |
2199 | } |
2200 | ||
2201 | IV | |
f62ce20a | 2202 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2203 | { |
96a5add6 | 2204 | PERL_UNUSED_CONTEXT; |
04892f78 | 2205 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2206 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2207 | } | |
2208 | return 1; | |
9e353e3b NIS |
2209 | } |
2210 | ||
2211 | IV | |
f62ce20a | 2212 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2213 | { |
96a5add6 | 2214 | PERL_UNUSED_CONTEXT; |
04892f78 | 2215 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2216 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2217 | } | |
2218 | return 1; | |
9e353e3b NIS |
2219 | } |
2220 | ||
2221 | void | |
f62ce20a | 2222 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2223 | { |
04892f78 | 2224 | if (PerlIOValid(f)) { |
dcda55fc | 2225 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2226 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2227 | if (PerlIOValid(n)) |
14a5cf38 JH |
2228 | PerlIO_clearerr(n); |
2229 | } | |
9e353e3b NIS |
2230 | } |
2231 | ||
2232 | void | |
f62ce20a | 2233 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2234 | { |
96a5add6 | 2235 | PERL_UNUSED_CONTEXT; |
04892f78 | 2236 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2237 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2238 | } | |
9e353e3b NIS |
2239 | } |
2240 | ||
93a8090d NIS |
2241 | SV * |
2242 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2243 | { | |
2244 | if (!arg) | |
a0714e2c | 2245 | return NULL; |
93a8090d NIS |
2246 | #ifdef sv_dup |
2247 | if (param) { | |
a951d81d BL |
2248 | arg = sv_dup(arg, param); |
2249 | SvREFCNT_inc_simple_void_NN(arg); | |
2250 | return arg; | |
93a8090d NIS |
2251 | } |
2252 | else { | |
2253 | return newSVsv(arg); | |
2254 | } | |
2255 | #else | |
1b6737cc | 2256 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2257 | return newSVsv(arg); |
2258 | #endif | |
2259 | } | |
2260 | ||
2261 | PerlIO * | |
ecdeb87c | 2262 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2263 | { |
1b6737cc | 2264 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2265 | if (PerlIOValid(nexto)) { |
de009b76 | 2266 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2267 | if (tab && tab->Dup) |
2268 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2269 | else | |
2270 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2271 | } |
2272 | if (f) { | |
dcda55fc | 2273 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2274 | SV *arg = NULL; |
93a8090d | 2275 | char buf[8]; |
fe5a182c JH |
2276 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2277 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2278 | if (self->Getarg) |
2279 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2280 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2281 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2282 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
a951d81d | 2283 | if (arg) |
93a8090d | 2284 | SvREFCNT_dec(arg); |
93a8090d NIS |
2285 | } |
2286 | return f; | |
2287 | } | |
2288 | ||
27da23d5 | 2289 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2290 | |
8b84d7dd | 2291 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2292 | static void |
2293 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2294 | dVAR; |
22c96fc1 | 2295 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2296 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2297 | int *new_array; |
2298 | ||
2299 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2300 | old_max, new_fd, new_max); | |
2301 | ||
2302 | if (new_fd < old_max) { | |
2303 | return; | |
2304 | } | |
2305 | ||
f4ae5be6 NC |
2306 | assert (new_max > new_fd); |
2307 | ||
eae082a0 JH |
2308 | /* Use plain realloc() since we need this memory to be really |
2309 | * global and visible to all the interpreters and/or threads. */ | |
2310 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2311 | |
2312 | if (!new_array) { | |
8b84d7dd | 2313 | #ifdef USE_ITHREADS |
6cb8cb21 | 2314 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2315 | #endif |
2316 | /* Can't use PerlIO to write as it allocates memory */ | |
2317 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2318 | PL_no_mem, strlen(PL_no_mem)); | |
2319 | my_exit(1); | |
2320 | } | |
2321 | ||
2322 | PL_perlio_fd_refcnt_size = new_max; | |
2323 | PL_perlio_fd_refcnt = new_array; | |
2324 | ||
95b63a38 JH |
2325 | PerlIO_debug("Zeroing %p, %d\n", |
2326 | (void*)(new_array + old_max), | |
2327 | new_max - old_max); | |
22c96fc1 NC |
2328 | |
2329 | Zero(new_array + old_max, new_max - old_max, int); | |
2330 | } | |
2331 | ||
2332 | ||
93a8090d NIS |
2333 | void |
2334 | PerlIO_init(pTHX) | |
2335 | { | |
8b84d7dd | 2336 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2337 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2338 | } |
2339 | ||
168d5872 NIS |
2340 | void |
2341 | PerlIOUnix_refcnt_inc(int fd) | |
2342 | { | |
27da23d5 | 2343 | dTHX; |
22c96fc1 | 2344 | if (fd >= 0) { |
97aff369 | 2345 | dVAR; |
22c96fc1 | 2346 | |
8b84d7dd | 2347 | #ifdef USE_ITHREADS |
6cb8cb21 | 2348 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2349 | #endif |
22c96fc1 NC |
2350 | if (fd >= PL_perlio_fd_refcnt_size) |
2351 | S_more_refcounted_fds(aTHX_ fd); | |
2352 | ||
27da23d5 | 2353 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd RGS |
2354 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
2355 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2356 | fd, PL_perlio_fd_refcnt[fd]); | |
2357 | } | |
2358 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2359 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2360 | |
8b84d7dd | 2361 | #ifdef USE_ITHREADS |
6cb8cb21 | 2362 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2363 | #endif |
8b84d7dd RGS |
2364 | } else { |
2365 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2366 | } |
2367 | } | |
2368 | ||
168d5872 NIS |
2369 | int |
2370 | PerlIOUnix_refcnt_dec(int fd) | |
2371 | { | |
27da23d5 | 2372 | dTHX; |
168d5872 | 2373 | int cnt = 0; |
22c96fc1 | 2374 | if (fd >= 0) { |
97aff369 | 2375 | dVAR; |
8b84d7dd | 2376 | #ifdef USE_ITHREADS |
6cb8cb21 | 2377 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2378 | #endif |
8b84d7dd RGS |
2379 | if (fd >= PL_perlio_fd_refcnt_size) { |
2380 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", | |
2381 | fd, PL_perlio_fd_refcnt_size); | |
2382 | } | |
2383 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2384 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", | |
2385 | fd, PL_perlio_fd_refcnt[fd]); | |
2386 | } | |
27da23d5 | 2387 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2388 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2389 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2390 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2391 | #endif |
8b84d7dd RGS |
2392 | } else { |
2393 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2394 | } |
2395 | return cnt; | |
2396 | } | |
2397 | ||
694c95cf JH |
2398 | void |
2399 | PerlIO_cleanup(pTHX) | |
2400 | { | |
97aff369 | 2401 | dVAR; |
694c95cf JH |
2402 | int i; |
2403 | #ifdef USE_ITHREADS | |
a25429c6 | 2404 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2405 | #else |
2406 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2407 | #endif |
e47547a8 | 2408 | |
694c95cf JH |
2409 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2410 | for (i=0; i < 3; i++) | |
2411 | PerlIOUnix_refcnt_inc(i); | |
2412 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2413 | /* Restore STDIN..STDERR refcount */ | |
2414 | for (i=0; i < 3; i++) | |
2415 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2416 | |
2417 | if (PL_known_layers) { | |
2418 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2419 | PL_known_layers = NULL; | |
2420 | } | |
27da23d5 | 2421 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2422 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2423 | PL_def_layerlist = NULL; | |
2424 | } | |
6cb8cb21 RGS |
2425 | } |
2426 | ||
0934c9d9 | 2427 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2428 | { |
53d44271 | 2429 | dVAR; |
4f3da17a DM |
2430 | #if 0 |
2431 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2432 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2433 | being present (at least in win32) :-(. | |
2434 | Disable for now. | |
2435 | */ | |
6cb8cb21 RGS |
2436 | #ifdef DEBUGGING |
2437 | { | |
2438 | /* By now all filehandles should have been closed, so any | |
2439 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2440 | * errors. */ | |
77db880c JH |
2441 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2442 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2443 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2444 | int i; |
2445 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2446 | if (PL_perlio_fd_refcnt[i]) { |
2447 | const STRLEN len = | |
2448 | my_snprintf(buf, sizeof(buf), | |
2449 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2450 | i, PL_perlio_fd_refcnt[i]); | |
2451 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2452 | } | |
6cb8cb21 RGS |
2453 | } |
2454 | } | |
2455 | #endif | |
4f3da17a | 2456 | #endif |
eae082a0 JH |
2457 | /* Not bothering with PL_perlio_mutex since by now |
2458 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2459 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2460 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2461 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2462 | PL_perlio_fd_refcnt = NULL; |
2463 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2464 | } |
694c95cf JH |
2465 | } |
2466 | ||
9e353e3b | 2467 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2468 | /* |
71200d45 | 2469 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2470 | */ |
9e353e3b | 2471 | |
14a5cf38 | 2472 | typedef struct { |
22569500 NIS |
2473 | struct _PerlIO base; /* The generic part */ |
2474 | int fd; /* UNIX like file descriptor */ | |
2475 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2476 | } PerlIOUnix; |
2477 | ||
6f9d8c32 | 2478 | int |
9e353e3b | 2479 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2480 | { |
14a5cf38 | 2481 | int oflags = -1; |
3b6c1aba | 2482 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2483 | mode++; |
2484 | switch (*mode) { | |
2485 | case 'r': | |
2486 | oflags = O_RDONLY; | |
2487 | if (*++mode == '+') { | |
2488 | oflags = O_RDWR; | |
2489 | mode++; | |
2490 | } | |
2491 | break; | |
2492 | ||
2493 | case 'w': | |
2494 | oflags = O_CREAT | O_TRUNC; | |
2495 | if (*++mode == '+') { | |
2496 | oflags |= O_RDWR; | |
2497 | mode++; | |
2498 | } | |
2499 | else | |
2500 | oflags |= O_WRONLY; | |
2501 | break; | |
2502 | ||
2503 | case 'a': | |
2504 | oflags = O_CREAT | O_APPEND; | |
2505 | if (*++mode == '+') { | |
2506 | oflags |= O_RDWR; | |
2507 | mode++; | |
2508 | } | |
2509 | else | |
2510 | oflags |= O_WRONLY; | |
2511 | break; | |
2512 | } | |
2513 | if (*mode == 'b') { | |
2514 | oflags |= O_BINARY; | |
2515 | oflags &= ~O_TEXT; | |
2516 | mode++; | |
2517 | } | |
2518 | else if (*mode == 't') { | |
2519 | oflags |= O_TEXT; | |
2520 | oflags &= ~O_BINARY; | |
2521 | mode++; | |
2522 | } | |
2523 | /* | |
71200d45 | 2524 | * Always open in binary mode |
14a5cf38 JH |
2525 | */ |
2526 | oflags |= O_BINARY; | |
2527 | if (*mode || oflags == -1) { | |
93189314 | 2528 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2529 | oflags = -1; |
2530 | } | |
2531 | return oflags; | |
9e353e3b NIS |
2532 | } |
2533 | ||
2534 | IV | |
f62ce20a | 2535 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2536 | { |
96a5add6 | 2537 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2538 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2539 | } |
2540 | ||
aa063c35 NIS |
2541 | static void |
2542 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2543 | { |
de009b76 | 2544 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2545 | #if defined(WIN32) |
aa063c35 NIS |
2546 | Stat_t st; |
2547 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2548 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2549 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2550 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2551 | } | |
aa063c35 NIS |
2552 | else { |
2553 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2554 | } | |
6caa5a9c NIS |
2555 | } |
2556 | #endif | |
aa063c35 NIS |
2557 | s->fd = fd; |
2558 | s->oflags = imode; | |
2559 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2560 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2561 | } |
2562 | ||
2563 | IV | |
2564 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2565 | { | |
2566 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2567 | if (*PerlIONext(f)) { |
4b069b44 | 2568 | /* We never call down so do any pending stuff now */ |
03c0554d | 2569 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2570 | /* |
71200d45 | 2571 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2572 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2573 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2574 | */ |
acbd16bf | 2575 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2576 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2577 | } |
2578 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2579 | |
14a5cf38 | 2580 | return code; |
4b803d04 NIS |
2581 | } |
2582 | ||
c2fcde81 JH |
2583 | IV |
2584 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2585 | { | |
de009b76 | 2586 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2587 | Off_t new_loc; |
96a5add6 | 2588 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2589 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2590 | #ifdef ESPIPE | |
2591 | SETERRNO(ESPIPE, LIB_INVARG); | |
2592 | #else | |
2593 | SETERRNO(EINVAL, LIB_INVARG); | |
2594 | #endif | |
2595 | return -1; | |
2596 | } | |
0723351e NC |
2597 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2598 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2599 | return -1; |
c2fcde81 JH |
2600 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2601 | return 0; | |
2602 | } | |
2603 | ||
9e353e3b | 2604 | PerlIO * |
14a5cf38 JH |
2605 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2606 | IV n, const char *mode, int fd, int imode, | |
2607 | int perm, PerlIO *f, int narg, SV **args) | |
2608 | { | |
d9dac8cd | 2609 | if (PerlIOValid(f)) { |
14a5cf38 | 2610 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2611 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2612 | } |
2613 | if (narg > 0) { | |
3b6c1aba | 2614 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2615 | mode++; |
2616 | else { | |
2617 | imode = PerlIOUnix_oflags(mode); | |
2618 | perm = 0666; | |
2619 | } | |
2620 | if (imode != -1) { | |
e62f0680 | 2621 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2622 | fd = PerlLIO_open3(path, imode, perm); |
2623 | } | |
2624 | } | |
2625 | if (fd >= 0) { | |
3b6c1aba | 2626 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2627 | mode++; |
2628 | if (!f) { | |
2629 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2630 | } |
2631 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2632 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2633 | return NULL; | |
2634 | } | |
d9dac8cd | 2635 | } |
aa063c35 | 2636 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2637 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2638 | if (*mode == IoTYPE_APPEND) |
2639 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2640 | return f; |
2641 | } | |
2642 | else { | |
2643 | if (f) { | |
6f207bd3 | 2644 | NOOP; |
14a5cf38 | 2645 | /* |
71200d45 | 2646 | * FIXME: pop layers ??? |
14a5cf38 JH |
2647 | */ |
2648 | } | |
2649 | return NULL; | |
2650 | } | |
9e353e3b NIS |
2651 | } |
2652 | ||
71200d45 | 2653 | PerlIO * |
ecdeb87c | 2654 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2655 | { |
dcda55fc | 2656 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2657 | int fd = os->fd; |
ecdeb87c NIS |
2658 | if (flags & PERLIO_DUP_FD) { |
2659 | fd = PerlLIO_dup(fd); | |
2660 | } | |
22c96fc1 | 2661 | if (fd >= 0) { |
ecdeb87c | 2662 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2663 | if (f) { |
2664 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2665 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2666 | return f; |
2667 | } | |
71200d45 NIS |
2668 | } |
2669 | return NULL; | |
2670 | } | |
2671 | ||
2672 | ||
9e353e3b | 2673 | SSize_t |
f62ce20a | 2674 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2675 | { |
97aff369 | 2676 | dVAR; |
de009b76 | 2677 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2678 | #ifdef PERLIO_STD_SPECIAL |
2679 | if (fd == 0) | |
2680 | return PERLIO_STD_IN(fd, vbuf, count); | |
2681 | #endif | |
81428673 | 2682 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2683 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2684 | return 0; |
1fd8f4ce | 2685 | } |
14a5cf38 | 2686 | while (1) { |
b464bac0 | 2687 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2688 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2689 | if (len < 0) { |
2690 | if (errno != EAGAIN) { | |
2691 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2692 | } | |
2693 | } | |
2694 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2695 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2696 | SETERRNO(0,0); |
2697 | } | |
14a5cf38 JH |
2698 | return len; |
2699 | } | |
2700 | PERL_ASYNC_CHECK(); | |
2701 | } | |
b464bac0 | 2702 | /*NOTREACHED*/ |
9e353e3b NIS |
2703 | } |
2704 | ||
2705 | SSize_t | |
f62ce20a | 2706 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2707 | { |
97aff369 | 2708 | dVAR; |
de009b76 | 2709 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2710 | #ifdef PERLIO_STD_SPECIAL |
2711 | if (fd == 1 || fd == 2) | |
2712 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2713 | #endif | |
14a5cf38 | 2714 | while (1) { |
de009b76 | 2715 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2716 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2717 | if (len < 0) { |
2718 | if (errno != EAGAIN) { | |
2719 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2720 | } | |
2721 | } | |
14a5cf38 JH |
2722 | return len; |
2723 | } | |
2724 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2725 | } |
1b6737cc | 2726 | /*NOTREACHED*/ |
9e353e3b NIS |
2727 | } |
2728 | ||
9e353e3b | 2729 | Off_t |
f62ce20a | 2730 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2731 | { |
96a5add6 AL |
2732 | PERL_UNUSED_CONTEXT; |
2733 | ||
14a5cf38 | 2734 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2735 | } |
2736 | ||
71200d45 | 2737 | |
9e353e3b | 2738 | IV |
f62ce20a | 2739 | PerlIOUnix_close(pTHX_ PerlIO *f) |
9e353e3b | 2740 | { |
97aff369 | 2741 | dVAR; |
de009b76 | 2742 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2743 | int code = 0; |
168d5872 NIS |
2744 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2745 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2746 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2747 | return 0; | |
22569500 | 2748 | } |
93a8090d NIS |
2749 | } |
2750 | else { | |
93189314 | 2751 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2752 | return -1; |
2753 | } | |
14a5cf38 JH |
2754 | while (PerlLIO_close(fd) != 0) { |
2755 | if (errno != EINTR) { | |
2756 | code = -1; | |
2757 | break; | |
2758 | } | |
2759 | PERL_ASYNC_CHECK(); | |
2760 | } | |
2761 | if (code == 0) { | |
2762 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2763 | } | |
2764 | return code; | |
9e353e3b NIS |
2765 | } |
2766 | ||
27da23d5 | 2767 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2768 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2769 | "unix", |
2770 | sizeof(PerlIOUnix), | |
2771 | PERLIO_K_RAW, | |
2772 | PerlIOUnix_pushed, | |
44798d05 | 2773 | PerlIOBase_popped, |
14a5cf38 | 2774 | PerlIOUnix_open, |
86e05cf2 | 2775 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2776 | NULL, |
2777 | PerlIOUnix_fileno, | |
71200d45 | 2778 | PerlIOUnix_dup, |
14a5cf38 JH |
2779 | PerlIOUnix_read, |
2780 | PerlIOBase_unread, | |
2781 | PerlIOUnix_write, | |
2782 | PerlIOUnix_seek, | |
2783 | PerlIOUnix_tell, | |
2784 | PerlIOUnix_close, | |
22569500 NIS |
2785 | PerlIOBase_noop_ok, /* flush */ |
2786 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2787 | PerlIOBase_eof, |
2788 | PerlIOBase_error, | |
2789 | PerlIOBase_clearerr, | |
2790 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2791 | NULL, /* get_base */ |
2792 | NULL, /* get_bufsiz */ | |
2793 | NULL, /* get_ptr */ | |
2794 | NULL, /* get_cnt */ | |
2795 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2796 | }; |
2797 | ||
2798 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2799 | /* |
71200d45 | 2800 | * stdio as a layer |
14a5cf38 | 2801 | */ |
9e353e3b | 2802 | |
313e59c8 NIS |
2803 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2804 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2805 | broken by the last second glibc 2.3 fix | |
2806 | */ | |
2807 | #define STDIO_BUFFER_WRITABLE | |
2808 | #endif | |
2809 | ||
2810 | ||
14a5cf38 JH |
2811 | typedef struct { |
2812 | struct _PerlIO base; | |
22569500 | 2813 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2814 | } PerlIOStdio; |
2815 | ||
2816 | IV | |
f62ce20a | 2817 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2818 | { |
96a5add6 AL |
2819 | PERL_UNUSED_CONTEXT; |
2820 | ||
c4420975 AL |
2821 | if (PerlIOValid(f)) { |
2822 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2823 | if (s) | |
2824 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2825 | } |
2826 | errno = EBADF; | |
2827 | return -1; | |
9e353e3b NIS |
2828 | } |
2829 | ||
766a733e | 2830 | char * |
14a5cf38 JH |
2831 | PerlIOStdio_mode(const char *mode, char *tmode) |
2832 | { | |
de009b76 | 2833 | char * const ret = tmode; |
a0625d38 SR |
2834 | if (mode) { |
2835 | while (*mode) { | |
2836 | *tmode++ = *mode++; | |
2837 | } | |
14a5cf38 | 2838 | } |
95005ad8 | 2839 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2840 | *tmode++ = 'b'; |
2841 | #endif | |
14a5cf38 JH |
2842 | *tmode = '\0'; |
2843 | return ret; | |
2844 | } | |
2845 | ||
4b803d04 | 2846 | IV |
2dc2558e | 2847 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2848 | { |
1fd8f4ce NIS |
2849 | PerlIO *n; |
2850 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2851 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2852 | if (toptab == tab) { |
2853 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2854 | PerlIO_pop(aTHX_ f); | |
2855 | return 0; | |
2856 | } else { | |
de009b76 | 2857 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2858 | char tmode[8]; |
2859 | FILE *stdio; | |
81428673 | 2860 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2861 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2862 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2863 | /* We never call down so do any pending stuff now */ | |
2864 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2865 | } |
1fd8f4ce NIS |
2866 | else { |
2867 | return -1; | |
2868 | } | |
2869 | } | |
14a5cf38 | 2870 | } |
2dc2558e | 2871 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2872 | } |
2873 | ||
22569500 | 2874 | |
9e353e3b | 2875 | PerlIO * |
4b069b44 | 2876 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2877 | { |
14a5cf38 JH |
2878 | dTHX; |
2879 | PerlIO *f = NULL; | |
2880 | if (stdio) { | |
22569500 | 2881 | PerlIOStdio *s; |
4b069b44 NIS |
2882 | if (!mode || !*mode) { |
2883 | /* We need to probe to see how we can open the stream | |
2884 | so start with read/write and then try write and read | |
2885 | we dup() so that we can fclose without loosing the fd. | |
2886 | ||
2887 | Note that the errno value set by a failing fdopen | |
2888 | varies between stdio implementations. | |
2889 | */ | |
de009b76 | 2890 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2891 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2892 | if (!f2) { |
a33cf58c | 2893 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2894 | } |
2895 | if (!f2) { | |
a33cf58c | 2896 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2897 | } |
2898 | if (!f2) { | |
2899 | /* Don't seem to be able to open */ | |
2900 | PerlLIO_close(fd); | |
2901 | return f; | |
2902 | } | |
2903 | fclose(f2); | |
22569500 | 2904 | } |
a0714e2c | 2905 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2906 | s = PerlIOSelf(f, PerlIOStdio); |
2907 | s->stdio = stdio; | |
c586124f | 2908 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2909 | } |
14a5cf38 JH |
2910 | } |
2911 | return f; | |
9e353e3b NIS |
2912 | } |
2913 | ||
2914 | PerlIO * | |
14a5cf38 JH |
2915 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2916 | IV n, const char *mode, int fd, int imode, | |
2917 | int perm, PerlIO *f, int narg, SV **args) | |
2918 | { | |
2919 | char tmode[8]; | |
d9dac8cd | 2920 | if (PerlIOValid(f)) { |
dcda55fc AL |
2921 | const char * const path = SvPV_nolen_const(*args); |
2922 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2923 | FILE *stdio; |
2924 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2925 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2926 | s->stdio); |
2927 | if (!s->stdio) | |
2928 | return NULL; | |
2929 | s->stdio = stdio; | |
1751d015 | 2930 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2931 | return f; |
2932 | } | |
2933 | else { | |
2934 | if (narg > 0) { | |
dcda55fc | 2935 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2936 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2937 | mode++; |
2938 | fd = PerlLIO_open3(path, imode, perm); | |
2939 | } | |
2940 | else { | |
95005ad8 GH |
2941 | FILE *stdio; |
2942 | bool appended = FALSE; | |
2943 | #ifdef __CYGWIN__ | |
2944 | /* Cygwin wants its 'b' early. */ | |
2945 | appended = TRUE; | |
2946 | mode = PerlIOStdio_mode(mode, tmode); | |
2947 | #endif | |
2948 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2949 | if (stdio) { |
6f0313ac JH |
2950 | if (!f) { |
2951 | f = PerlIO_allocate(aTHX); | |
2952 | } | |
95005ad8 GH |
2953 | if (!appended) |
2954 | mode = PerlIOStdio_mode(mode, tmode); | |
2955 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2956 | if (f) { | |
0f0f9e2b JH |
2957 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2958 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
2959 | } else { | |
2960 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
2961 | } |
2962 | return f; | |
2963 | } | |
2964 | else { | |
2965 | return NULL; | |
2966 | } | |
14a5cf38 JH |
2967 | } |
2968 | } | |
2969 | if (fd >= 0) { | |
2970 | FILE *stdio = NULL; | |
2971 | int init = 0; | |
3b6c1aba | 2972 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2973 | init = 1; |
2974 | mode++; | |
2975 | } | |
2976 | if (init) { | |
2977 | switch (fd) { | |
2978 | case 0: | |
2979 | stdio = PerlSIO_stdin; | |
2980 | break; | |
2981 | case 1: | |
2982 | stdio = PerlSIO_stdout; | |
2983 | break; | |
2984 | case 2: | |
2985 | stdio = PerlSIO_stderr; | |
2986 | break; | |
2987 | } | |
2988 | } | |
2989 | else { | |
2990 | stdio = PerlSIO_fdopen(fd, mode = | |
2991 | PerlIOStdio_mode(mode, tmode)); | |
2992 | } | |
2993 | if (stdio) { | |
d9dac8cd NIS |
2994 | if (!f) { |
2995 | f = PerlIO_allocate(aTHX); | |
2996 | } | |
a33cf58c | 2997 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
2998 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2999 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3000 | } |
14a5cf38 JH |
3001 | return f; |
3002 | } | |
3003 | } | |
3004 | } | |
ee518936 | 3005 | return NULL; |
9e353e3b NIS |
3006 | } |
3007 | ||
1751d015 | 3008 | PerlIO * |
ecdeb87c | 3009 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3010 | { |
3011 | /* This assumes no layers underneath - which is what | |
3012 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3013 | */ | |
ecdeb87c | 3014 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3015 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3016 | const int fd = fileno(stdio); |
9217ff3f | 3017 | char mode[8]; |
ecdeb87c | 3018 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3019 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3020 | if (dfd >= 0) { |
3021 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3022 | goto set_this; | |
ecdeb87c NIS |
3023 | } |
3024 | else { | |
6f207bd3 | 3025 | NOOP; |
ecdeb87c NIS |
3026 | /* FIXME: To avoid messy error recovery if dup fails |
3027 | re-use the existing stdio as though flag was not set | |
3028 | */ | |
3029 | } | |
3030 | } | |
9217ff3f NIS |
3031 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3032 | set_this: | |
694c95cf JH |
3033 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3034 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
1751d015 NIS |
3035 | } |
3036 | return f; | |
3037 | } | |
3038 | ||
0d7a5398 NIS |
3039 | static int |
3040 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3041 | { | |
96a5add6 AL |
3042 | PERL_UNUSED_CONTEXT; |
3043 | ||
0d7a5398 | 3044 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3045 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3046 | */ |
ef8eacb8 AT |
3047 | # if defined(__UCLIBC__) |
3048 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3049 | f->__filedes = -1; | |
3050 | return 1; | |
3051 | # elif defined(__GLIBC__) | |
0d7a5398 | 3052 | /* There may be a better way for GLIBC: |
37725cdc | 3053 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3054 | */ |
3055 | f->_fileno = -1; | |
3056 | return 1; | |
3057 | # elif defined(__sun__) | |
f5992bc4 | 3058 | PERL_UNUSED_ARG(f); |
cfedb851 | 3059 | return 0; |
0d7a5398 NIS |
3060 | # elif defined(__hpux) |
3061 | f->__fileH = 0xff; | |
3062 | f->__fileL = 0xff; | |
3063 | return 1; | |
9837d373 | 3064 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3065 | your platform does not have special entry try this one. |
9837d373 NIS |
3066 | [For OSF only have confirmation for Tru64 (alpha) |
3067 | but assume other OSFs will be similar.] | |
37725cdc | 3068 | */ |
9837d373 | 3069 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3070 | f->_file = -1; |
3071 | return 1; | |
3072 | # elif defined(__FreeBSD__) | |
3073 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3074 | - we could insert a dummy func in the _close function entry |
3075 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3076 | */ |
3077 | f->_file = -1; | |
0c49ea6a SU |
3078 | return 1; |
3079 | # elif defined(__OpenBSD__) | |
3080 | /* There may be a better way on OpenBSD: | |
3081 | - we could insert a dummy func in the _close function entry | |
3082 | f->_close = (int (*)(void *)) dummy_close; | |
3083 | */ | |
3084 | f->_file = -1; | |
0d7a5398 | 3085 | return 1; |
59ad941d IZ |
3086 | # elif defined(__EMX__) |
3087 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3088 | f->_handle = -1; | |
3089 | return 1; | |
0d7a5398 NIS |
3090 | # elif defined(__CYGWIN__) |
3091 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3092 | - we could insert a dummy func in the _close function entry |
3093 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3094 | */ |
3095 | f->_file = -1; | |
3096 | return 1; | |
3097 | # elif defined(WIN32) | |
3098 | # if defined(__BORLANDC__) | |
3099 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3100 | # elif defined(UNDER_CE) |
3101 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3102 | structure at all | |
3103 | */ | |
0d7a5398 NIS |
3104 | # else |
3105 | f->_file = -1; | |
3106 | # endif | |
3107 | return 1; | |
3108 | # else | |
3109 | #if 0 | |
37725cdc | 3110 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3111 | (which isn't thread safe) instead |
37725cdc | 3112 | */ |
0d7a5398 NIS |
3113 | # error "Don't know how to set FILE.fileno on your platform" |
3114 | #endif | |
8772537c | 3115 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3116 | return 0; |
3117 | # endif | |
3118 | } | |
3119 | ||
1751d015 | 3120 | IV |
f62ce20a | 3121 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3122 | { |
c4420975 | 3123 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3124 | if (!stdio) { |
3125 | errno = EBADF; | |
3126 | return -1; | |
3127 | } | |
9217ff3f | 3128 | else { |
de009b76 | 3129 | const int fd = fileno(stdio); |
0d7a5398 | 3130 | int invalidate = 0; |
bbfd922f | 3131 | IV result = 0; |
0d7a5398 | 3132 | int saveerr = 0; |
1d791a44 | 3133 | int dupfd = -1; |
a2e578da MHM |
3134 | #ifdef USE_ITHREADS |
3135 | dVAR; | |
3136 | #endif | |
0d7a5398 | 3137 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3138 | /* Socks lib overrides close() but stdio isn't linked to |
3139 | that library (though we are) - so we must call close() | |
3140 | on sockets on stdio's behalf. | |
3141 | */ | |
0d7a5398 NIS |
3142 | int optval; |
3143 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3144 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3145 | invalidate = 1; |
0d7a5398 | 3146 | #endif |
6b4ce6c8 | 3147 | if (PerlIOUnix_refcnt_dec(fd) > 0) /* File descriptor still in use */ |
0d7a5398 | 3148 | invalidate = 1; |
0d7a5398 | 3149 | if (invalidate) { |
6b4ce6c8 AL |
3150 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3151 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3152 | return 0; | |
3153 | if (stdio == stdout || stdio == stderr) | |
3154 | return PerlIO_flush(f); | |
37725cdc NIS |
3155 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3156 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3157 | fileno slot of the FILE * | |
3158 | */ | |
bbfd922f | 3159 | result = PerlIO_flush(f); |
0d7a5398 | 3160 | saveerr = errno; |
6b4ce6c8 | 3161 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3162 | if (!invalidate) { |
9bab90c0 NC |
3163 | #ifdef USE_ITHREADS |
3164 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3165 | /* Right. We need a mutex here because for a brief while we |
3166 | will have the situation that fd is actually closed. Hence if | |
3167 | a second thread were to get into this block, its dup() would | |
3168 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3169 | Then if we get to the dup2() first, we blat the fd back |
3170 | (messing up its temporary as a side effect) only for it to | |
3171 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3172 | ||
3173 | /* There is, of course, a race condition, that any other thread | |
3174 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3175 | for the duration of this little manoeuvrer. Perhaps we |
3176 | should hold an IO mutex for the duration of every IO | |
3177 | operation if we know that invalidate doesn't work on this | |
3178 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3179 | |
3180 | Except that correctness trumps speed. | |
3181 | Advice from klortho #11912. */ | |
3182 | #endif | |
6b4ce6c8 | 3183 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3184 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3185 | if (dupfd < 0) { |
3186 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3187 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3188 | recover from here, or if closing this particular FILE * | |
3189 | is a good idea now. */ | |
3190 | } | |
3191 | #endif | |
3192 | } | |
37725cdc | 3193 | } |
0d7a5398 | 3194 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3195 | /* We treat error from stdio as success if we invalidated |
3196 | errno may NOT be expected EBADF | |
e8529473 NIS |
3197 | */ |
3198 | if (invalidate && result != 0) { | |
0d7a5398 NIS |
3199 | errno = saveerr; |
3200 | result = 0; | |
37725cdc | 3201 | } |
6b4ce6c8 AL |
3202 | #ifdef SOCKS5_VERSION_NAME |
3203 | /* in SOCKS' case, let close() determine return value */ | |
3204 | result = close(fd); | |
3205 | #endif | |
1d791a44 | 3206 | if (dupfd >= 0) { |
0d7a5398 | 3207 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3208 | PerlLIO_close(dupfd); |
711e8db2 | 3209 | #ifdef USE_ITHREADS |
9bab90c0 | 3210 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3211 | #endif |
9217ff3f NIS |
3212 | } |
3213 | return result; | |
37725cdc | 3214 | } |
1751d015 NIS |
3215 | } |
3216 | ||
9e353e3b | 3217 | SSize_t |
f62ce20a | 3218 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3219 | { |
97aff369 | 3220 | dVAR; |
c4420975 | 3221 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3222 | SSize_t got = 0; |
4d948241 NIS |
3223 | for (;;) { |
3224 | if (count == 1) { | |
3225 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3226 | /* | |
3227 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3228 | * stdio does not do that for fread() | |
3229 | */ | |
de009b76 | 3230 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3231 | if (ch != EOF) { |
3232 | *buf = ch; | |
3233 | got = 1; | |
3234 | } | |
14a5cf38 | 3235 | } |
4d948241 NIS |
3236 | else |
3237 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3238 | if (got == 0 && PerlSIO_ferror(s)) |
3239 | got = -1; | |
42a7a32f | 3240 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3241 | break; |
3242 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3243 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3244 | } |
14a5cf38 | 3245 | return got; |
9e353e3b NIS |
3246 | } |
3247 | ||
3248 | SSize_t | |
f62ce20a | 3249 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3250 | { |
14a5cf38 | 3251 | SSize_t unread = 0; |
c4420975 | 3252 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3253 | |
313e59c8 | 3254 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3255 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3256 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3257 | STDCHAR *base = PerlIO_get_base(f); | |
3258 | SSize_t cnt = PerlIO_get_cnt(f); | |
3259 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3260 | SSize_t avail = ptr - base; | |
3261 | if (avail > 0) { | |
3262 | if (avail > count) { | |
3263 | avail = count; | |
3264 | } | |
3265 | ptr -= avail; | |
3266 | Move(buf-avail,ptr,avail,STDCHAR); | |
3267 | count -= avail; | |
3268 | unread += avail; | |
3269 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3270 | if (PerlSIO_feof(s) && unread >= 0) |
3271 | PerlSIO_clearerr(s); | |
3272 | } | |
3273 | } | |
313e59c8 NIS |
3274 | else |
3275 | #endif | |
3276 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3277 | /* We can get pointer to buffer but not its base |
3278 | Do ungetc() but check chars are ending up in the | |
3279 | buffer | |
3280 | */ | |
3281 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3282 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3283 | while (count > 0) { | |
de009b76 | 3284 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3285 | if (ungetc(ch,s) != ch) { |
3286 | /* ungetc did not work */ | |
3287 | break; | |
3288 | } | |
3289 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3290 | /* Did not change pointer as expected */ | |
3291 | fgetc(s); /* get char back again */ | |
3292 | break; | |
3293 | } | |
3294 | /* It worked ! */ | |
3295 | count--; | |
3296 | unread++; | |
93679785 NIS |
3297 | } |
3298 | } | |
3299 | ||
3300 | if (count > 0) { | |
3301 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3302 | } |
3303 | return unread; | |
9e353e3b NIS |
3304 | } |
3305 | ||
3306 | SSize_t | |
f62ce20a | 3307 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3308 | { |
97aff369 | 3309 | dVAR; |
4d948241 NIS |
3310 | SSize_t got; |
3311 | for (;;) { | |
3312 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3313 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3314 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3315 | break; |
3316 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3317 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3318 | } |
3319 | return got; | |
9e353e3b NIS |
3320 | } |
3321 | ||
94a175e1 | 3322 | IV |
f62ce20a | 3323 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3324 | { |
c4420975 | 3325 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3326 | PERL_UNUSED_CONTEXT; |
3327 | ||
94a175e1 | 3328 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3329 | } |
3330 | ||
3331 | Off_t | |
f62ce20a | 3332 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3333 | { |
c4420975 | 3334 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3335 | PERL_UNUSED_CONTEXT; |
3336 | ||
94a175e1 | 3337 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3338 | } |
3339 | ||
3340 | IV | |
f62ce20a | 3341 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3342 | { |
c4420975 | 3343 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3344 | PERL_UNUSED_CONTEXT; |
3345 | ||
14a5cf38 JH |
3346 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3347 | return PerlSIO_fflush(stdio); | |
3348 | } | |
3349 | else { | |
6f207bd3 | 3350 | NOOP; |
88b61e10 | 3351 | #if 0 |
14a5cf38 JH |
3352 | /* |
3353 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3354 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3355 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3356 | * layer read-to-read |
14a5cf38 JH |
3357 | */ |
3358 | /* | |
71200d45 | 3359 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3360 | */ |
79852593 | 3361 | const int err = errno; |
14a5cf38 JH |
3362 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
3363 | errno = err; | |
88b61e10 | 3364 | #endif |
14a5cf38 JH |
3365 | } |
3366 | return 0; | |
9e353e3b NIS |
3367 | } |
3368 | ||
3369 | IV | |
f62ce20a | 3370 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3371 | { |
96a5add6 AL |
3372 | PERL_UNUSED_CONTEXT; |
3373 | ||
14a5cf38 | 3374 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3375 | } |
3376 | ||
3377 | IV | |
f62ce20a | 3378 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3379 | { |
96a5add6 AL |
3380 | PERL_UNUSED_CONTEXT; |
3381 | ||
263df5f1 | 3382 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3383 | } |
3384 | ||
3385 | void | |
f62ce20a | 3386 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3387 | { |
96a5add6 AL |
3388 | PERL_UNUSED_CONTEXT; |
3389 | ||
14a5cf38 | 3390 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3391 | } |
3392 | ||
3393 | void | |
f62ce20a | 3394 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3395 | { |
96a5add6 AL |
3396 | PERL_UNUSED_CONTEXT; |
3397 | ||
9e353e3b | 3398 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3399 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3400 | #else |
bd61b366 | 3401 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3402 | #endif |
3403 | } | |
3404 | ||
3405 | #ifdef FILE_base | |
3406 | STDCHAR * | |
f62ce20a | 3407 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3408 | { |
c4420975 | 3409 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3410 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3411 | } |
3412 | ||
3413 | Size_t | |
f62ce20a | 3414 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3415 | { |
c4420975 | 3416 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3417 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3418 | } |
3419 | #endif | |
3420 | ||
3421 | #ifdef USE_STDIO_PTR | |
3422 | STDCHAR * | |
f62ce20a | 3423 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3424 | { |
c4420975 | 3425 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3426 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3427 | } |
3428 | ||
3429 | SSize_t | |
f62ce20a | 3430 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3431 | { |
c4420975 | 3432 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3433 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3434 | } |
3435 | ||
3436 | void | |
f62ce20a | 3437 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3438 | { |
c4420975 | 3439 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3440 | if (ptr != NULL) { |
9e353e3b | 3441 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3442 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3443 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3444 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3445 | #endif |
3446 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3447 | /* |
71200d45 | 3448 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3449 | */ |
3450 | return; | |
9e353e3b | 3451 | #endif |
22569500 | 3452 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3453 | PerlProc_abort(); |
22569500 | 3454 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3455 | } |
3456 | /* | |
71200d45 | 3457 | * Now (or only) set cnt |
14a5cf38 | 3458 | */ |
9e353e3b | 3459 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3460 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3461 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3462 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3463 | PerlSIO_set_ptr(stdio, |
3464 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3465 | cnt)); | |
22569500 | 3466 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3467 | PerlProc_abort(); |
22569500 NIS |
3468 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3469 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3470 | } |
3471 | ||
93679785 | 3472 | |
9e353e3b NIS |
3473 | #endif |
3474 | ||
93679785 NIS |
3475 | IV |
3476 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3477 | { | |
c4420975 | 3478 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3479 | int c; |
96a5add6 AL |
3480 | PERL_UNUSED_CONTEXT; |
3481 | ||
93679785 NIS |
3482 | /* |
3483 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3484 | */ | |
3485 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3486 | if (PerlSIO_fflush(stdio) != 0) | |
3487 | return EOF; | |
3488 | } | |
f3be3723 BL |
3489 | for (;;) { |
3490 | c = PerlSIO_fgetc(stdio); | |
3491 | if (c != EOF) | |
3492 | break; | |
3493 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3494 | return EOF; | |
3495 | PERL_ASYNC_CHECK(); | |
3496 | SETERRNO(0,0); | |
3497 | } | |
93679785 NIS |
3498 | |
3499 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3500 | |
3501 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3502 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3503 | /* Fake ungetc() to the real buffer in case system's ungetc |
3504 | goes elsewhere | |
3505 | */ | |
3506 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3507 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3508 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3509 | if (ptr == base+1) { | |
3510 | *--ptr = (STDCHAR) c; | |
3511 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3512 | if (PerlSIO_feof(stdio)) | |
3513 | PerlSIO_clearerr(stdio); | |
3514 | return 0; | |
3515 | } | |
3516 | } | |
313e59c8 NIS |
3517 | else |
3518 | #endif | |
3519 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3520 | STDCHAR ch = c; |
3521 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3522 | return 0; | |
3523 | } | |
3524 | } | |
93679785 NIS |
3525 | #endif |
3526 | ||
3527 | #if defined(VMS) | |
3528 | /* An ungetc()d char is handled separately from the regular | |
3529 | * buffer, so we stuff it in the buffer ourselves. | |
3530 | * Should never get called as should hit code above | |
3531 | */ | |
bad9695d NIS |
3532 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3533 | (*stdio)->_cnt++; | |
93679785 NIS |
3534 | #else |
3535 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3536 | using ungetc(). |
93679785 NIS |
3537 | */ |
3538 | if (PerlSIO_ungetc(c, stdio) != c) | |
3539 | return EOF; | |
3540 | #endif | |
3541 | return 0; | |
3542 | } | |
3543 | ||
3544 | ||
3545 | ||
27da23d5 | 3546 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3547 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3548 | "stdio", |
3549 | sizeof(PerlIOStdio), | |
86e05cf2 | 3550 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3551 | PerlIOStdio_pushed, |
44798d05 | 3552 | PerlIOBase_popped, |
14a5cf38 | 3553 | PerlIOStdio_open, |
86e05cf2 | 3554 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3555 | NULL, |
3556 | PerlIOStdio_fileno, | |
71200d45 | 3557 | PerlIOStdio_dup, |
14a5cf38 JH |
3558 | PerlIOStdio_read, |
3559 | PerlIOStdio_unread, | |
3560 | PerlIOStdio_write, | |
3561 | PerlIOStdio_seek, | |
3562 | PerlIOStdio_tell, | |
3563 | PerlIOStdio_close, | |
3564 | PerlIOStdio_flush, | |
3565 | PerlIOStdio_fill, | |
3566 | PerlIOStdio_eof, | |
3567 | PerlIOStdio_error, | |
3568 | PerlIOStdio_clearerr, | |
3569 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3570 | #ifdef FILE_base |
14a5cf38 JH |
3571 | PerlIOStdio_get_base, |
3572 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3573 | #else |
14a5cf38 JH |
3574 | NULL, |
3575 | NULL, | |
9e353e3b NIS |
3576 | #endif |
3577 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3578 | PerlIOStdio_get_ptr, |
3579 | PerlIOStdio_get_cnt, | |
15b61c98 | 3580 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3581 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3582 | # else |
3583 | NULL, | |
3584 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3585 | #else | |
3586 | NULL, | |
14a5cf38 JH |
3587 | NULL, |
3588 | NULL, | |
15b61c98 | 3589 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3590 | }; |
3591 | ||
b9d6bf13 JH |
3592 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3593 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3594 | FILE * |
81428673 | 3595 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3596 | { |
e87a358a | 3597 | dTHX; |
81428673 NIS |
3598 | FILE *stdio = NULL; |
3599 | if (PerlIOValid(f)) { | |
3600 | char buf[8]; | |
3601 | PerlIO_flush(f); | |
3602 | if (!mode || !*mode) { | |
3603 | mode = PerlIO_modestr(f, buf); | |
3604 | } | |
3605 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3606 | if (stdio) { | |
3607 | PerlIOl *l = *f; | |
9f75cc58 | 3608 | PerlIO *f2; |
81428673 NIS |
3609 | /* De-link any lower layers so new :stdio sticks */ |
3610 | *f = NULL; | |
a0714e2c | 3611 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3612 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3613 | s->stdio = stdio; |
6b54a403 | 3614 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3615 | /* Link previous lower layers under new one */ |
3616 | *PerlIONext(f) = l; | |
3617 | } | |
3618 | else { | |
3619 | /* restore layers list */ | |
3620 | *f = l; | |
3621 | } | |
a33cf58c | 3622 | } |
14a5cf38 JH |
3623 | } |
3624 | return stdio; | |
9e353e3b NIS |
3625 | } |
3626 | ||
81428673 | 3627 | |
9e353e3b NIS |
3628 | FILE * |
3629 | PerlIO_findFILE(PerlIO *f) | |
3630 | { | |
14a5cf38 | 3631 | PerlIOl *l = *f; |
bbbc33d0 | 3632 | FILE *stdio; |
14a5cf38 JH |
3633 | while (l) { |
3634 | if (l->tab == &PerlIO_stdio) { | |
3635 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3636 | return s->stdio; | |
3637 | } | |
3638 | l = *PerlIONext(&l); | |
f7e7eb72 | 3639 | } |
4b069b44 | 3640 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3641 | /* However, we're not really exporting a FILE * to someone else (who |
3642 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
3643 | So we need to undo its refernce count increase on the underlying file | |
3644 | descriptor. We have to do this, because if the loop above returns you | |
3645 | the FILE *, then *it* didn't increase any reference count. So there's | |
3646 | only one way to be consistent. */ | |
3647 | stdio = PerlIO_exportFILE(f, NULL); | |
3648 | if (stdio) { | |
3649 | const int fd = fileno(stdio); | |
3650 | if (fd >= 0) | |
3651 | PerlIOUnix_refcnt_dec(fd); | |
3652 | } | |
3653 | return stdio; | |
9e353e3b NIS |
3654 | } |
3655 | ||
b9d6bf13 | 3656 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3657 | void |
3658 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3659 | { | |
27da23d5 | 3660 | dVAR; |
22569500 NIS |
3661 | PerlIOl *l; |
3662 | while ((l = *p)) { | |
3663 | if (l->tab == &PerlIO_stdio) { | |
3664 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3665 | if (s->stdio == f) { | |
3666 | dTHX; | |
6b54a403 NC |
3667 | const int fd = fileno(f); |
3668 | if (fd >= 0) | |
3669 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3670 | PerlIO_pop(aTHX_ p); |
3671 | return; | |
3672 | } | |
3673 | } | |
3674 | p = PerlIONext(p); | |
3675 | } | |
3676 | return; | |
9e353e3b NIS |
3677 | } |
3678 | ||
3679 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3680 | /* |
71200d45 | 3681 | * perlio buffer layer |
14a5cf38 | 3682 | */ |
9e353e3b | 3683 | |
5e2ab84b | 3684 | IV |
2dc2558e | 3685 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3686 | { |
14a5cf38 | 3687 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3688 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3689 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3690 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3691 | } | |
4b069b44 | 3692 | if (*PerlIONext(f)) { |
de009b76 | 3693 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3694 | if (posn != (Off_t) - 1) { |
3695 | b->posn = posn; | |
3696 | } | |
14a5cf38 | 3697 | } |
2dc2558e | 3698 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3699 | } |
3700 | ||
9e353e3b | 3701 | PerlIO * |
14a5cf38 JH |
3702 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3703 | IV n, const char *mode, int fd, int imode, int perm, | |
3704 | PerlIO *f, int narg, SV **args) | |
3705 | { | |
04892f78 | 3706 | if (PerlIOValid(f)) { |
14a5cf38 | 3707 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3708 | PerlIO_funcs *tab = |
3709 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3710 | if (tab && tab->Open) | |
3711 | next = | |
3712 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3713 | next, narg, args); | |
2dc2558e | 3714 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3715 | return NULL; |
3716 | } | |
3717 | } | |
3718 | else { | |
04892f78 | 3719 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3720 | int init = 0; |
3b6c1aba | 3721 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3722 | init = 1; |
3723 | /* | |
71200d45 | 3724 | * mode++; |
14a5cf38 JH |
3725 | */ |
3726 | } | |
67363c0d JH |
3727 | if (tab && tab->Open) |
3728 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3729 | f, narg, args); | |
3730 | else | |
3731 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3732 | if (f) { |
22569500 | 3733 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3734 | /* |
3735 | * if push fails during open, open fails. close will pop us. | |
3736 | */ | |
3737 | PerlIO_close (f); | |
3738 | return NULL; | |
3739 | } else { | |
3740 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3741 | if (init && fd == 2) { |
3742 | /* | |
3743 | * Initial stderr is unbuffered | |
3744 | */ | |
3745 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3746 | } | |
23b84778 IZ |
3747 | #ifdef PERLIO_USING_CRLF |
3748 | # ifdef PERLIO_IS_BINMODE_FD | |
3749 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3750 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3751 | else |
3752 | # endif | |
3753 | /* | |
3754 | * do something about failing setmode()? --jhi | |
3755 | */ | |
3756 | PerlLIO_setmode(fd, O_BINARY); | |
3757 | #endif | |
14a5cf38 JH |
3758 | } |
3759 | } | |
ee518936 | 3760 | } |
14a5cf38 | 3761 | return f; |
9e353e3b NIS |
3762 | } |
3763 | ||
14a5cf38 JH |
3764 | /* |
3765 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3766 | * read or write state. For write state, we put the postponed data through |
3767 | * the next layers. For read state, we seek() the next layers to the | |
3768 | * offset given by current position in the buffer, and discard the buffer | |
3769 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3770 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3771 | */ |
9e353e3b | 3772 | IV |
f62ce20a | 3773 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3774 | { |
dcda55fc | 3775 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3776 | int code = 0; |
04892f78 | 3777 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3778 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3779 | /* | |
71200d45 | 3780 | * write() the buffer |
14a5cf38 | 3781 | */ |
de009b76 AL |
3782 | const STDCHAR *buf = b->buf; |
3783 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3784 | while (p < b->ptr) { |
3785 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3786 | if (count > 0) { | |
3787 | p += count; | |
3788 | } | |
3789 | else if (count < 0 || PerlIO_error(n)) { | |
3790 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3791 | code = -1; | |
3792 | break; | |
3793 | } | |
3794 | } | |
3795 | b->posn += (p - buf); | |
3796 | } | |
3797 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3798 | STDCHAR *buf = PerlIO_get_base(f); | |
3799 | /* | |
71200d45 | 3800 | * Note position change |
14a5cf38 JH |
3801 | */ |
3802 | b->posn += (b->ptr - buf); | |
3803 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3804 | /* We did not consume all of it - try and seek downstream to |
3805 | our logical position | |
14a5cf38 | 3806 | */ |
4b069b44 | 3807 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3808 | /* Reload n as some layers may pop themselves on seek */ |
3809 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3810 | } |
ba5c3fe9 | 3811 | else { |
4b069b44 NIS |
3812 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3813 | data is lost for good - so return saying "ok" having undone | |
3814 | the position adjust | |
3815 | */ | |
3816 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3817 | return code; |
3818 | } | |
14a5cf38 JH |
3819 | } |
3820 | } | |
3821 | b->ptr = b->end = b->buf; | |
3822 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3823 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3824 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3825 | code = -1; |
3826 | return code; | |
6f9d8c32 NIS |
3827 | } |
3828 | ||
93c2c2ec IZ |
3829 | /* This discards the content of the buffer after b->ptr, and rereads |
3830 | * the buffer from the position off in the layer downstream; here off | |
3831 | * is at offset corresponding to b->ptr - b->buf. | |
3832 | */ | |
06da4f11 | 3833 | IV |
f62ce20a | 3834 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3835 | { |
dcda55fc | 3836 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3837 | PerlIO *n = PerlIONext(f); |
3838 | SSize_t avail; | |
3839 | /* | |
4b069b44 NIS |
3840 | * Down-stream flush is defined not to loose read data so is harmless. |
3841 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3842 | */ |
93c2c2ec | 3843 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3844 | return -1; |
3845 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3846 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3847 | |
3848 | if (!b->buf) | |
22569500 | 3849 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3850 | |
0f0eef27 | 3851 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3852 | |
14a5cf38 | 3853 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3854 | |
3855 | if (!PerlIOValid(n)) { | |
3856 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3857 | return -1; | |
3858 | } | |
3859 | ||
14a5cf38 JH |
3860 | if (PerlIO_fast_gets(n)) { |
3861 | /* | |
04892f78 | 3862 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3863 | * ->Read() because that will loop till it gets what we asked for |
3864 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3865 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3866 | */ |
3867 | avail = PerlIO_get_cnt(n); | |
3868 | if (avail <= 0) { | |
3869 | avail = PerlIO_fill(n); | |
3870 | if (avail == 0) | |
3871 | avail = PerlIO_get_cnt(n); | |
3872 | else { | |
3873 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3874 | avail = 0; | |
3875 | } | |
3876 | } | |
3877 | if (avail > 0) { | |
3878 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3879 | const SSize_t cnt = avail; |
eb160463 | 3880 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3881 | avail = b->bufsiz; |
3882 | Copy(ptr, b->buf, avail, STDCHAR); | |
3883 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3884 | } | |
3885 | } | |
3886 | else { | |
3887 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3888 | } | |
3889 | if (avail <= 0) { | |
3890 | if (avail == 0) | |
3891 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3892 | else | |
3893 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3894 | return -1; | |
3895 | } | |
3896 | b->end = b->buf + avail; | |
3897 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3898 | return 0; | |
06da4f11 NIS |
3899 | } |
3900 | ||
6f9d8c32 | 3901 | SSize_t |
f62ce20a | 3902 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3903 | { |
04892f78 | 3904 | if (PerlIOValid(f)) { |
dcda55fc | 3905 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3906 | if (!b->ptr) |
3907 | PerlIO_get_base(f); | |
f62ce20a | 3908 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3909 | } |
3910 | return 0; | |
6f9d8c32 NIS |
3911 | } |
3912 | ||
9e353e3b | 3913 | SSize_t |
f62ce20a | 3914 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3915 | { |
14a5cf38 | 3916 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3917 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3918 | SSize_t unread = 0; |
3919 | SSize_t avail; | |
3920 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3921 | PerlIO_flush(f); | |
3922 | if (!b->buf) | |
3923 | PerlIO_get_base(f); | |
3924 | if (b->buf) { | |
3925 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3926 | /* | |
3927 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3928 | * which have been read back to buffer start |
14a5cf38 JH |
3929 | */ |
3930 | avail = (b->ptr - b->buf); | |
3931 | } | |
3932 | else { | |
3933 | /* | |
3934 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3935 | * unread |
14a5cf38 JH |
3936 | */ |
3937 | avail = b->bufsiz; | |
3938 | b->end = b->buf + avail; | |
3939 | b->ptr = b->end; | |
3940 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3941 | /* | |
71200d45 | 3942 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3943 | */ |
3944 | b->posn -= b->bufsiz; | |
3945 | } | |
3946 | if (avail > (SSize_t) count) { | |
3947 | /* | |
71200d45 | 3948 | * If we have space for more than count, just move count |
14a5cf38 JH |
3949 | */ |
3950 | avail = count; | |
3951 | } | |
3952 | if (avail > 0) { | |
3953 | b->ptr -= avail; | |
3954 | buf -= avail; | |
3955 | /* | |
3956 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3957 | * there |
14a5cf38 JH |
3958 | */ |
3959 | if (buf != b->ptr) { | |
3960 | Copy(buf, b->ptr, avail, STDCHAR); | |
3961 | } | |
3962 | count -= avail; | |
3963 | unread += avail; | |
3964 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3965 | } | |
3966 | } | |
93679785 NIS |
3967 | if (count > 0) { |
3968 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3969 | } | |
14a5cf38 | 3970 | return unread; |
760ac839 LW |
3971 | } |
3972 | ||
9e353e3b | 3973 | SSize_t |
f62ce20a | 3974 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3975 | { |
de009b76 | 3976 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3977 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3978 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3979 | Size_t written = 0; |
3980 | if (!b->buf) | |
3981 | PerlIO_get_base(f); | |
3982 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3983 | return 0; | |
0678cb22 NIS |
3984 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3985 | if (PerlIO_flush(f) != 0) { | |
3986 | return 0; | |
3987 | } | |
3988 | } | |
ee56a6b9 CS |
3989 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
3990 | flushptr = buf + count; | |
3991 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
3992 | --flushptr; | |
3993 | } | |
14a5cf38 JH |
3994 | while (count > 0) { |
3995 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
3996 | if ((SSize_t) count < avail) | |
3997 | avail = count; | |
ee56a6b9 CS |
3998 | if (flushptr > buf && flushptr <= buf + avail) |
3999 | avail = flushptr - buf; | |
14a5cf38 | 4000 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4001 | if (avail) { |
4002 | Copy(buf, b->ptr, avail, STDCHAR); | |
4003 | count -= avail; | |
4004 | buf += avail; | |
4005 | written += avail; | |
4006 | b->ptr += avail; | |
4007 | if (buf == flushptr) | |
4008 | PerlIO_flush(f); | |
14a5cf38 JH |
4009 | } |
4010 | if (b->ptr >= (b->buf + b->bufsiz)) | |
4011 | PerlIO_flush(f); | |
4012 | } | |
4013 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4014 | PerlIO_flush(f); | |
4015 | return written; | |
9e353e3b NIS |
4016 | } |
4017 | ||
94a175e1 | 4018 | IV |
f62ce20a | 4019 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4020 | { |
14a5cf38 JH |
4021 | IV code; |
4022 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4023 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4024 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4025 | if (code == 0) { | |
de009b76 | 4026 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4027 | b->posn = PerlIO_tell(PerlIONext(f)); |
4028 | } | |
9e353e3b | 4029 | } |
14a5cf38 | 4030 | return code; |
9e353e3b NIS |
4031 | } |
4032 | ||
4033 | Off_t | |
f62ce20a | 4034 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4035 | { |
dcda55fc | 4036 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4037 | /* |
71200d45 | 4038 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4039 | */ |
4040 | Off_t posn = b->posn; | |
37725cdc | 4041 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4042 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4043 | #if 1 | |
4044 | /* As O_APPEND files are normally shared in some sense it is better | |
4045 | to flush : | |
4046 | */ | |
4047 | PerlIO_flush(f); | |
4048 | #else | |
37725cdc | 4049 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4050 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4051 | #endif | |
4052 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4053 | } | |
14a5cf38 JH |
4054 | if (b->buf) { |
4055 | /* | |
71200d45 | 4056 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4057 | */ |
4058 | posn += (b->ptr - b->buf); | |
4059 | } | |
4060 | return posn; | |
9e353e3b NIS |
4061 | } |
4062 | ||
4063 | IV | |
44798d05 NIS |
4064 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4065 | { | |
de009b76 AL |
4066 | const IV code = PerlIOBase_popped(aTHX_ f); |
4067 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4068 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4069 | Safefree(b->buf); | |
4070 | } | |
dcda55fc | 4071 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4072 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4073 | return code; | |
4074 | } | |
4075 | ||
4076 | IV | |
f62ce20a | 4077 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4078 | { |
de009b76 AL |
4079 | const IV code = PerlIOBase_close(aTHX_ f); |
4080 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4081 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4082 | Safefree(b->buf); |
14a5cf38 | 4083 | } |
dcda55fc | 4084 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4085 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4086 | return code; | |
760ac839 LW |
4087 | } |
4088 | ||
9e353e3b | 4089 | STDCHAR * |
f62ce20a | 4090 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4091 | { |
dcda55fc | 4092 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4093 | if (!b->buf) |
4094 | PerlIO_get_base(f); | |
4095 | return b->ptr; | |
9e353e3b NIS |
4096 | } |
4097 | ||
05d1247b | 4098 | SSize_t |
f62ce20a | 4099 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4100 | { |
dcda55fc | 4101 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4102 | if (!b->buf) |
4103 | PerlIO_get_base(f); | |
4104 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4105 | return (b->end - b->ptr); | |
4106 | return 0; | |
9e353e3b NIS |
4107 | } |
4108 | ||
4109 | STDCHAR * | |
f62ce20a | 4110 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4111 | { |
dcda55fc | 4112 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4113 | PERL_UNUSED_CONTEXT; |
4114 | ||
14a5cf38 JH |
4115 | if (!b->buf) { |
4116 | if (!b->bufsiz) | |
4117 | b->bufsiz = 4096; | |
a02a5408 | 4118 | b->buf = Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4119 | if (!b->buf) { |
4120 | b->buf = (STDCHAR *) & b->oneword; | |
4121 | b->bufsiz = sizeof(b->oneword); | |
4122 | } | |
dcda55fc | 4123 | b->end = b->ptr = b->buf; |
06da4f11 | 4124 | } |
14a5cf38 | 4125 | return b->buf; |
9e353e3b NIS |
4126 | } |
4127 | ||
4128 | Size_t | |
f62ce20a | 4129 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4130 | { |
dcda55fc | 4131 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4132 | if (!b->buf) |
4133 | PerlIO_get_base(f); | |
4134 | return (b->end - b->buf); | |
9e353e3b NIS |
4135 | } |
4136 | ||
4137 | void | |
f62ce20a | 4138 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4139 | { |
dcda55fc | 4140 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4141 | #ifndef DEBUGGING |
4142 | PERL_UNUSED_ARG(cnt); | |
4143 | #endif | |
14a5cf38 JH |
4144 | if (!b->buf) |
4145 | PerlIO_get_base(f); | |
4146 | b->ptr = ptr; | |
b727803b RGS |
4147 | assert(PerlIO_get_cnt(f) == cnt); |
4148 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4149 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4150 | } |
4151 | ||
71200d45 | 4152 | PerlIO * |
ecdeb87c | 4153 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4154 | { |
ecdeb87c | 4155 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4156 | } |
4157 | ||
4158 | ||
4159 | ||
27da23d5 | 4160 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4161 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4162 | "perlio", |
4163 | sizeof(PerlIOBuf), | |
86e05cf2 | 4164 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4165 | PerlIOBuf_pushed, |
44798d05 | 4166 | PerlIOBuf_popped, |
14a5cf38 | 4167 | PerlIOBuf_open, |
86e05cf2 | 4168 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4169 | NULL, |
4170 | PerlIOBase_fileno, | |
71200d45 | 4171 | PerlIOBuf_dup, |
14a5cf38 JH |
4172 | PerlIOBuf_read, |
4173 | PerlIOBuf_unread, | |
4174 | PerlIOBuf_write, | |
4175 | PerlIOBuf_seek, | |
4176 | PerlIOBuf_tell, | |
4177 | PerlIOBuf_close, | |
4178 | PerlIOBuf_flush, | |
4179 | PerlIOBuf_fill, | |
4180 | PerlIOBase_eof, | |
4181 | PerlIOBase_error, | |
4182 | PerlIOBase_clearerr, | |
4183 | PerlIOBase_setlinebuf, | |
4184 | PerlIOBuf_get_base, | |
4185 | PerlIOBuf_bufsiz, | |
4186 | PerlIOBuf_get_ptr, | |
4187 | PerlIOBuf_get_cnt, | |
4188 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4189 | }; |
4190 | ||
66ecd56b | 4191 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4192 | /* |
71200d45 | 4193 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4194 | */ |
5e2ab84b NIS |
4195 | |
4196 | IV | |
f62ce20a | 4197 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4198 | { |
14a5cf38 | 4199 | /* |
71200d45 | 4200 | * Should never happen |
14a5cf38 JH |
4201 | */ |
4202 | PerlIO_flush(f); | |
4203 | return 0; | |
5e2ab84b NIS |
4204 | } |
4205 | ||
4206 | IV | |
f62ce20a | 4207 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4208 | { |
14a5cf38 | 4209 | /* |
71200d45 | 4210 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4211 | */ |
4212 | PerlIO_flush(f); | |
4213 | return PerlIO_close(f); | |
5e2ab84b NIS |
4214 | } |
4215 | ||
94a175e1 | 4216 | IV |
f62ce20a | 4217 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4218 | { |
14a5cf38 | 4219 | /* |
71200d45 | 4220 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4221 | */ |
4222 | PerlIO_flush(f); | |
4223 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4224 | } |
4225 | ||
4226 | ||
4227 | IV | |
f62ce20a | 4228 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4229 | { |
dcda55fc | 4230 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4231 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4232 | Safefree(b->buf); |
14a5cf38 JH |
4233 | b->buf = NULL; |
4234 | } | |
4235 | PerlIO_pop(aTHX_ f); | |
4236 | return 0; | |
5e2ab84b NIS |
4237 | } |
4238 | ||
4239 | void | |
f62ce20a | 4240 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4241 | { |
14a5cf38 JH |
4242 | if (cnt <= 0) { |
4243 | PerlIO_flush(f); | |
4244 | } | |
4245 | else { | |
f62ce20a | 4246 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4247 | } |
5e2ab84b NIS |
4248 | } |
4249 | ||
4250 | IV | |
2dc2558e | 4251 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4252 | { |
de009b76 | 4253 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4254 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4255 | /* |
71200d45 NIS |
4256 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4257 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4258 | */ |
4259 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4260 | (PerlIOBase(PerlIONext(f))-> | |
4261 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4262 | return code; | |
5e2ab84b NIS |
4263 | } |
4264 | ||
4265 | SSize_t | |
f62ce20a | 4266 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4267 | { |
14a5cf38 JH |
4268 | SSize_t avail = PerlIO_get_cnt(f); |
4269 | SSize_t got = 0; | |
eb160463 | 4270 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4271 | avail = count; |
4272 | if (avail > 0) | |
f62ce20a | 4273 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4274 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4275 | const SSize_t more = |
14a5cf38 JH |
4276 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4277 | if (more >= 0 || got == 0) | |
4278 | got += more; | |
4279 | } | |
4280 | return got; | |
5e2ab84b NIS |
4281 | } |
4282 | ||
27da23d5 | 4283 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4284 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4285 | "pending", |
4286 | sizeof(PerlIOBuf), | |
86e05cf2 | 4287 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4288 | PerlIOPending_pushed, |
44798d05 | 4289 | PerlIOBuf_popped, |
14a5cf38 | 4290 | NULL, |
86e05cf2 | 4291 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4292 | NULL, |
4293 | PerlIOBase_fileno, | |
71200d45 | 4294 | PerlIOBuf_dup, |
14a5cf38 JH |
4295 | PerlIOPending_read, |
4296 | PerlIOBuf_unread, | |
4297 | PerlIOBuf_write, | |
4298 | PerlIOPending_seek, | |
4299 | PerlIOBuf_tell, | |
4300 | PerlIOPending_close, | |
4301 | PerlIOPending_flush, | |
4302 | PerlIOPending_fill, | |
4303 | PerlIOBase_eof, | |
4304 | PerlIOBase_error, | |
4305 | PerlIOBase_clearerr, | |
4306 | PerlIOBase_setlinebuf, | |
4307 | PerlIOBuf_get_base, | |
4308 | PerlIOBuf_bufsiz, | |
4309 | PerlIOBuf_get_ptr, | |
4310 | PerlIOBuf_get_cnt, | |
4311 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4312 | }; |
4313 | ||
4314 | ||
4315 | ||
4316 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4317 | /* |
4318 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4319 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4320 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4321 | * |
4322 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4323 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4324 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4325 | * that it ends at c->nl; these two cases can be distinguished by | |
4326 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4327 | * _unread() and _flush() calls. | |
4328 | * It only matters for read operations. | |
66ecd56b NIS |
4329 | */ |
4330 | ||
14a5cf38 | 4331 | typedef struct { |
22569500 NIS |
4332 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4333 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4334 | * buffer */ |
99efab12 NIS |
4335 | } PerlIOCrlf; |
4336 | ||
ff1e3883 JD |
4337 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4338 | * Otherwise the :crlf layer would always revert back to | |
4339 | * raw mode. | |
4340 | */ | |
4341 | static void | |
4342 | S_inherit_utf8_flag(PerlIO *f) | |
4343 | { | |
4344 | PerlIO *g = PerlIONext(f); | |
4345 | if (PerlIOValid(g)) { | |
4346 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4347 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4348 | } | |
4349 | } | |
4350 | } | |
4351 | ||
f5b9d040 | 4352 | IV |
2dc2558e | 4353 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4354 | { |
14a5cf38 JH |
4355 | IV code; |
4356 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4357 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4358 | #if 0 |
14a5cf38 | 4359 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4360 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4361 | PerlIOBase(f)->flags); |
5e2ab84b | 4362 | #endif |
8229d19f JH |
4363 | { |
4364 | /* Enable the first CRLF capable layer you can find, but if none | |
4365 | * found, the one we just pushed is fine. This results in at | |
4366 | * any given moment at most one CRLF-capable layer being enabled | |
4367 | * in the whole layer stack. */ | |
4368 | PerlIO *g = PerlIONext(f); | |
ff1e3883 | 4369 | while (PerlIOValid(g)) { |
8229d19f JH |
4370 | PerlIOl *b = PerlIOBase(g); |
4371 | if (b && b->tab == &PerlIO_crlf) { | |
4372 | if (!(b->flags & PERLIO_F_CRLF)) | |
4373 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4374 | S_inherit_utf8_flag(g); |
8229d19f JH |
4375 | PerlIO_pop(aTHX_ f); |
4376 | return code; | |
4377 | } | |
4378 | g = PerlIONext(g); | |
4379 | } | |
4380 | } | |
ff1e3883 | 4381 | S_inherit_utf8_flag(f); |
14a5cf38 | 4382 | return code; |
f5b9d040 NIS |
4383 | } |
4384 | ||
4385 | ||
99efab12 | 4386 | SSize_t |
f62ce20a | 4387 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4388 | { |
dcda55fc | 4389 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4390 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4391 | *(c->nl) = 0xd; |
4392 | c->nl = NULL; | |
4393 | } | |
4394 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4395 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4396 | else { |
4397 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4398 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4399 | SSize_t unread = 0; | |
4400 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4401 | PerlIO_flush(f); | |
4402 | if (!b->buf) | |
4403 | PerlIO_get_base(f); | |
4404 | if (b->buf) { | |
4405 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4406 | b->end = b->ptr = b->buf + b->bufsiz; | |
4407 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4408 | b->posn -= b->bufsiz; | |
4409 | } | |
4410 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4411 | const int ch = *--buf; |
14a5cf38 JH |
4412 | if (ch == '\n') { |
4413 | if (b->ptr - 2 >= b->buf) { | |
4414 | *--(b->ptr) = 0xa; | |
4415 | *--(b->ptr) = 0xd; | |
4416 | unread++; | |
4417 | count--; | |
4418 | } | |
4419 | else { | |
93c2c2ec IZ |
4420 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4421 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4422 | unread++; | |
4423 | count--; | |
14a5cf38 JH |
4424 | } |
4425 | } | |
4426 | else { | |
4427 | *--(b->ptr) = ch; | |
4428 | unread++; | |
4429 | count--; | |
4430 | } | |
4431 | } | |
4432 | } | |
4433 | return unread; | |
4434 | } | |
99efab12 NIS |
4435 | } |
4436 | ||
93c2c2ec | 4437 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4438 | SSize_t |
f62ce20a | 4439 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4440 | { |
dcda55fc | 4441 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4442 | if (!b->buf) |
4443 | PerlIO_get_base(f); | |
4444 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4445 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4446 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4447 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4448 | scan: |
4449 | while (nl < b->end && *nl != 0xd) | |
4450 | nl++; | |
4451 | if (nl < b->end && *nl == 0xd) { | |
4452 | test: | |
4453 | if (nl + 1 < b->end) { | |
4454 | if (nl[1] == 0xa) { | |
4455 | *nl = '\n'; | |
4456 | c->nl = nl; | |
4457 | } | |
4458 | else { | |
4459 | /* | |
71200d45 | 4460 | * Not CR,LF but just CR |
14a5cf38 JH |
4461 | */ |
4462 | nl++; | |
4463 | goto scan; | |
4464 | } | |
4465 | } | |
4466 | else { | |
4467 | /* | |
71200d45 | 4468 | * Blast - found CR as last char in buffer |
14a5cf38 | 4469 | */ |
e87a358a | 4470 | |
14a5cf38 JH |
4471 | if (b->ptr < nl) { |
4472 | /* | |
4473 | * They may not care, defer work as long as | |
71200d45 | 4474 | * possible |
14a5cf38 | 4475 | */ |
a0d1d361 | 4476 | c->nl = nl; |
14a5cf38 JH |
4477 | return (nl - b->ptr); |
4478 | } | |
4479 | else { | |
4480 | int code; | |
22569500 | 4481 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4482 | * flush() is concerned */ |
22569500 | 4483 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4484 | /* Note as we have moved buf up flush's |
4485 | posn += ptr-buf | |
4486 | will naturally make posn point at CR | |
4487 | */ | |
22569500 NIS |
4488 | b->bufsiz--; /* Buffer is thus smaller */ |
4489 | code = PerlIO_fill(f); /* Fetch some more */ | |
4490 | b->bufsiz++; /* Restore size for next time */ | |
4491 | b->buf--; /* Point at space */ | |
4492 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4493 | * off */ |
22569500 | 4494 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4495 | if (code == 0) |
22569500 | 4496 | goto test; /* fill() call worked */ |
14a5cf38 | 4497 | /* |
71200d45 | 4498 | * CR at EOF - just fall through |
14a5cf38 | 4499 | */ |
a0d1d361 | 4500 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4501 | } |
4502 | } | |
4503 | } | |
4504 | } | |
4505 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4506 | } | |
4507 | return 0; | |
99efab12 NIS |
4508 | } |
4509 | ||
4510 | void | |
f62ce20a | 4511 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4512 | { |
dcda55fc AL |
4513 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4514 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4515 | if (!b->buf) |
4516 | PerlIO_get_base(f); | |
4517 | if (!ptr) { | |
a0d1d361 | 4518 | if (c->nl) { |
14a5cf38 | 4519 | ptr = c->nl + 1; |
22569500 | 4520 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4521 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4522 | ptr--; |
4523 | } | |
4524 | } | |
14a5cf38 JH |
4525 | else { |
4526 | ptr = b->end; | |
14a5cf38 JH |
4527 | } |
4528 | ptr -= cnt; | |
4529 | } | |
4530 | else { | |
6f207bd3 | 4531 | NOOP; |
3b4bd3fd | 4532 | #if 0 |
14a5cf38 | 4533 | /* |
71200d45 | 4534 | * Test code - delete when it works ... |
14a5cf38 | 4535 | */ |
3b4bd3fd | 4536 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4537 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4538 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4539 | /* Defered CR at end of buffer case - we lied about count */ |
4540 | chk--; | |
22569500 | 4541 | } |
14a5cf38 JH |
4542 | chk -= cnt; |
4543 | ||
a0d1d361 | 4544 | if (ptr != chk ) { |
99ef548b | 4545 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4546 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4547 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4548 | } |
99ef548b | 4549 | #endif |
14a5cf38 JH |
4550 | } |
4551 | if (c->nl) { | |
4552 | if (ptr > c->nl) { | |
4553 | /* | |
71200d45 | 4554 | * They have taken what we lied about |
14a5cf38 JH |
4555 | */ |
4556 | *(c->nl) = 0xd; | |
4557 | c->nl = NULL; | |
4558 | ptr++; | |
4559 | } | |
4560 | } | |
4561 | b->ptr = ptr; | |
4562 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4563 | } |
4564 | ||
4565 | SSize_t | |
f62ce20a | 4566 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4567 | { |
14a5cf38 | 4568 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4569 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4570 | else { |
dcda55fc | 4571 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4572 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4573 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4574 | if (!b->buf) |
4575 | PerlIO_get_base(f); | |
4576 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4577 | return 0; | |
4578 | while (buf < ebuf) { | |
dcda55fc | 4579 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4580 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4581 | while (buf < ebuf && b->ptr < eptr) { | |
4582 | if (*buf == '\n') { | |
4583 | if ((b->ptr + 2) > eptr) { | |
4584 | /* | |
71200d45 | 4585 | * Not room for both |
14a5cf38 JH |
4586 | */ |
4587 | PerlIO_flush(f); | |
4588 | break; | |
4589 | } | |
4590 | else { | |
22569500 NIS |
4591 | *(b->ptr)++ = 0xd; /* CR */ |
4592 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4593 | buf++; |
4594 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4595 | PerlIO_flush(f); | |
4596 | break; | |
4597 | } | |
4598 | } | |
4599 | } | |
4600 | else { | |
dcda55fc | 4601 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4602 | } |
4603 | if (b->ptr >= eptr) { | |
4604 | PerlIO_flush(f); | |
4605 | break; | |
4606 | } | |
4607 | } | |
4608 | } | |
4609 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4610 | PerlIO_flush(f); | |
4611 | return (buf - (STDCHAR *) vbuf); | |
4612 | } | |
99efab12 NIS |
4613 | } |
4614 | ||
4615 | IV | |
f62ce20a | 4616 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4617 | { |
dcda55fc | 4618 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4619 | if (c->nl) { |
4620 | *(c->nl) = 0xd; | |
4621 | c->nl = NULL; | |
4622 | } | |
f62ce20a | 4623 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4624 | } |
4625 | ||
86e05cf2 NIS |
4626 | IV |
4627 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4628 | { | |
4629 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4630 | /* In text mode - flush any pending stuff and flip it */ | |
4631 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4632 | #ifndef PERLIO_USING_CRLF | |
4633 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
4634 | if (PerlIOBase(f)->tab == &PerlIO_crlf) { | |
4635 | PerlIO_pop(aTHX_ f); | |
4636 | } | |
4637 | #endif | |
4638 | } | |
4639 | return 0; | |
4640 | } | |
4641 | ||
27da23d5 | 4642 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4643 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4644 | "crlf", |
4645 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4646 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4647 | PerlIOCrlf_pushed, |
44798d05 | 4648 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4649 | PerlIOBuf_open, |
86e05cf2 | 4650 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4651 | NULL, |
4652 | PerlIOBase_fileno, | |
71200d45 | 4653 | PerlIOBuf_dup, |
de009b76 | 4654 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4655 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4656 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4657 | PerlIOBuf_seek, |
4658 | PerlIOBuf_tell, | |
4659 | PerlIOBuf_close, | |
4660 | PerlIOCrlf_flush, | |
4661 | PerlIOBuf_fill, | |
4662 | PerlIOBase_eof, | |
4663 | PerlIOBase_error, | |
4664 | PerlIOBase_clearerr, | |
4665 | PerlIOBase_setlinebuf, | |
4666 | PerlIOBuf_get_base, | |
4667 | PerlIOBuf_bufsiz, | |
4668 | PerlIOBuf_get_ptr, | |
4669 | PerlIOCrlf_get_cnt, | |
4670 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4671 | }; |
4672 | ||
06da4f11 NIS |
4673 | #ifdef HAS_MMAP |
4674 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4675 | /* |
71200d45 | 4676 | * mmap as "buffer" layer |
14a5cf38 | 4677 | */ |
06da4f11 | 4678 | |
14a5cf38 | 4679 | typedef struct { |
22569500 NIS |
4680 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4681 | Mmap_t mptr; /* Mapped address */ | |
4682 | Size_t len; /* mapped length */ | |
4683 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4684 | } PerlIOMmap; |
4685 | ||
4686 | IV | |
f62ce20a | 4687 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4688 | { |
27da23d5 | 4689 | dVAR; |
de009b76 AL |
4690 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4691 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4692 | IV code = 0; |
4693 | if (m->len) | |
4694 | abort(); | |
4695 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4696 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4697 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4698 | Stat_t st; |
4699 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4700 | if (code == 0 && S_ISREG(st.st_mode)) { |
4701 | SSize_t len = st.st_size - b->posn; | |
4702 | if (len > 0) { | |
4703 | Off_t posn; | |
27da23d5 JH |
4704 | if (PL_mmap_page_size <= 0) |
4705 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4706 | PL_mmap_page_size); | |
14a5cf38 JH |
4707 | if (b->posn < 0) { |
4708 | /* | |
4709 | * This is a hack - should never happen - open should | |
71200d45 | 4710 | * have set it ! |
14a5cf38 JH |
4711 | */ |
4712 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4713 | } | |
27da23d5 | 4714 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 | 4715 | len = st.st_size - posn; |
b91fbb93 | 4716 | m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
14a5cf38 | 4717 | if (m->mptr && m->mptr != (Mmap_t) - 1) { |
a5262162 | 4718 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4719 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4720 | #endif |
a5262162 | 4721 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4722 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4723 | #endif |
14a5cf38 JH |
4724 | PerlIOBase(f)->flags = |
4725 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4726 | b->end = ((STDCHAR *) m->mptr) + len; | |
4727 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4728 | b->ptr = b->buf; | |
4729 | m->len = len; | |
4730 | } | |
4731 | else { | |
4732 | b->buf = NULL; | |
4733 | } | |
4734 | } | |
4735 | else { | |
4736 | PerlIOBase(f)->flags = | |
4737 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4738 | b->buf = NULL; | |
4739 | b->ptr = b->end = b->ptr; | |
4740 | code = -1; | |
4741 | } | |
4742 | } | |
4743 | } | |
4744 | return code; | |
06da4f11 NIS |
4745 | } |
4746 | ||
4747 | IV | |
e87a358a | 4748 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4749 | { |
dcda55fc | 4750 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4751 | IV code = 0; |
4752 | if (m->len) { | |
dcda55fc | 4753 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4754 | if (b->buf) { |
1ccb7c8d JH |
4755 | /* The munmap address argument is tricky: depending on the |
4756 | * standard it is either "void *" or "caddr_t" (which is | |
4757 | * usually "char *" (signed or unsigned). If we cast it | |
4758 | * to "void *", those that have it caddr_t and an uptight | |
4759 | * C++ compiler, will freak out. But casting it as char* | |
4760 | * should work. Maybe. (Using Mmap_t figured out by | |
4761 | * Configure doesn't always work, apparently.) */ | |
4762 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4763 | b->buf = NULL; |
4764 | m->len = 0; | |
4765 | m->mptr = NULL; | |
4766 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4767 | code = -1; | |
4768 | } | |
4769 | b->ptr = b->end = b->buf; | |
4770 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4771 | } | |
4772 | return code; | |
06da4f11 NIS |
4773 | } |
4774 | ||
4775 | STDCHAR * | |
f62ce20a | 4776 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4777 | { |
dcda55fc AL |
4778 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4779 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4780 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4781 | /* | |
71200d45 | 4782 | * Already have a readbuffer in progress |
14a5cf38 JH |
4783 | */ |
4784 | return b->buf; | |
4785 | } | |
4786 | if (b->buf) { | |
4787 | /* | |
71200d45 | 4788 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4789 | */ |
22569500 NIS |
4790 | m->bbuf = b->buf; /* save it in case we need it again */ |
4791 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4792 | } |
4793 | if (!b->buf) { | |
22569500 | 4794 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4795 | if (!b->buf) { |
4796 | /* | |
71200d45 | 4797 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4798 | */ |
4799 | b->buf = m->bbuf; | |
4800 | } | |
4801 | } | |
4802 | b->ptr = b->end = b->buf; | |
4803 | if (b->buf) | |
4804 | return b->buf; | |
f62ce20a | 4805 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4806 | } |
4807 | ||
4808 | SSize_t | |
f62ce20a | 4809 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4810 | { |
dcda55fc AL |
4811 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4812 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4813 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4814 | PerlIO_flush(f); | |
4815 | if (b->ptr && (b->ptr - count) >= b->buf | |
4816 | && memEQ(b->ptr - count, vbuf, count)) { | |
4817 | b->ptr -= count; | |
4818 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4819 | return count; | |
4820 | } | |
4821 | if (m->len) { | |
4822 | /* | |
71200d45 | 4823 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4824 | */ |
4825 | PerlIO_flush(f); | |
4826 | /* | |
71200d45 | 4827 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4828 | */ |
4829 | if (!b->buf && m->bbuf) | |
4830 | b->buf = m->bbuf; | |
4831 | if (!b->buf) { | |
f62ce20a | 4832 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4833 | m->bbuf = b->buf; |
4834 | } | |
4835 | } | |
f62ce20a | 4836 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4837 | } |
4838 | ||
4839 | SSize_t | |
f62ce20a | 4840 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4841 | { |
de009b76 AL |
4842 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4843 | PerlIOBuf * const b = &m->base; | |
4844 | ||
14a5cf38 JH |
4845 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4846 | /* | |
71200d45 | 4847 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4848 | */ |
4849 | if (m->len) { | |
e87a358a | 4850 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4851 | return 0; |
4852 | } | |
4853 | /* | |
71200d45 | 4854 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4855 | */ |
4856 | if (!b->buf && m->bbuf) | |
4857 | b->buf = m->bbuf; | |
4858 | if (!b->buf) { | |
f62ce20a | 4859 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4860 | m->bbuf = b->buf; |
4861 | } | |
06da4f11 | 4862 | } |
f62ce20a | 4863 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4864 | } |
4865 | ||
4866 | IV | |
f62ce20a | 4867 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4868 | { |
dcda55fc AL |
4869 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4870 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4871 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4872 | /* |
71200d45 | 4873 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4874 | */ |
4875 | if (b->buf) { | |
4876 | if (m->len) { | |
4877 | /* | |
71200d45 | 4878 | * Unmap the buffer |
14a5cf38 | 4879 | */ |
e87a358a | 4880 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4881 | code = -1; |
4882 | } | |
4883 | else { | |
4884 | /* | |
4885 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4886 | * remember it in case we need one later |
14a5cf38 JH |
4887 | */ |
4888 | m->bbuf = b->buf; | |
4889 | } | |
4890 | } | |
4891 | return code; | |
06da4f11 NIS |
4892 | } |
4893 | ||
4894 | IV | |
f62ce20a | 4895 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4896 | { |
dcda55fc | 4897 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4898 | IV code = PerlIO_flush(f); |
4899 | if (code == 0 && !b->buf) { | |
f62ce20a | 4900 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4901 | } |
4902 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4903 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4904 | } |
4905 | return code; | |
06da4f11 NIS |
4906 | } |
4907 | ||
4908 | IV | |
f62ce20a | 4909 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4910 | { |
dcda55fc AL |
4911 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4912 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4913 | IV code = PerlIO_flush(f); |
4914 | if (m->bbuf) { | |
4915 | b->buf = m->bbuf; | |
4916 | m->bbuf = NULL; | |
4917 | b->ptr = b->end = b->buf; | |
4918 | } | |
f62ce20a | 4919 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4920 | code = -1; |
4921 | return code; | |
06da4f11 NIS |
4922 | } |
4923 | ||
71200d45 | 4924 | PerlIO * |
ecdeb87c | 4925 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4926 | { |
ecdeb87c | 4927 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4928 | } |
4929 | ||
06da4f11 | 4930 | |
27da23d5 | 4931 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4932 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4933 | "mmap", |
4934 | sizeof(PerlIOMmap), | |
86e05cf2 | 4935 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4936 | PerlIOBuf_pushed, |
44798d05 | 4937 | PerlIOBuf_popped, |
14a5cf38 | 4938 | PerlIOBuf_open, |
86e05cf2 | 4939 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4940 | NULL, |
4941 | PerlIOBase_fileno, | |
71200d45 | 4942 | PerlIOMmap_dup, |
14a5cf38 JH |
4943 | PerlIOBuf_read, |
4944 | PerlIOMmap_unread, | |
4945 | PerlIOMmap_write, | |
4946 | PerlIOBuf_seek, | |
4947 | PerlIOBuf_tell, | |
4948 | PerlIOBuf_close, | |
4949 | PerlIOMmap_flush, | |
4950 | PerlIOMmap_fill, | |
4951 | PerlIOBase_eof, | |
4952 | PerlIOBase_error, | |
4953 | PerlIOBase_clearerr, | |
4954 | PerlIOBase_setlinebuf, | |
4955 | PerlIOMmap_get_base, | |
4956 | PerlIOBuf_bufsiz, | |
4957 | PerlIOBuf_get_ptr, | |
4958 | PerlIOBuf_get_cnt, | |
4959 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4960 | }; |
4961 | ||
22569500 | 4962 | #endif /* HAS_MMAP */ |
06da4f11 | 4963 | |
9e353e3b | 4964 | PerlIO * |
e87a358a | 4965 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4966 | { |
97aff369 | 4967 | dVAR; |
a1ea730d | 4968 | if (!PL_perlio) { |
14a5cf38 JH |
4969 | PerlIO_stdstreams(aTHX); |
4970 | } | |
a1ea730d | 4971 | return &PL_perlio[1]; |
9e353e3b NIS |
4972 | } |
4973 | ||
9e353e3b | 4974 | PerlIO * |
e87a358a | 4975 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4976 | { |
97aff369 | 4977 | dVAR; |
a1ea730d | 4978 | if (!PL_perlio) { |
14a5cf38 JH |
4979 | PerlIO_stdstreams(aTHX); |
4980 | } | |
a1ea730d | 4981 | return &PL_perlio[2]; |
9e353e3b NIS |
4982 | } |
4983 | ||
9e353e3b | 4984 | PerlIO * |
e87a358a | 4985 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4986 | { |
97aff369 | 4987 | dVAR; |
a1ea730d | 4988 | if (!PL_perlio) { |
14a5cf38 JH |
4989 | PerlIO_stdstreams(aTHX); |
4990 | } | |
a1ea730d | 4991 | return &PL_perlio[3]; |
9e353e3b NIS |
4992 | } |
4993 | ||
4994 | /*--------------------------------------------------------------------------------------*/ | |
4995 | ||
9e353e3b NIS |
4996 | char * |
4997 | PerlIO_getname(PerlIO *f, char *buf) | |
4998 | { | |
14a5cf38 | 4999 | dTHX; |
a15cef0c | 5000 | #ifdef VMS |
73d840c0 | 5001 | char *name = NULL; |
7659f319 | 5002 | bool exported = FALSE; |
14a5cf38 | 5003 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
5004 | if (!stdio) { |
5005 | stdio = PerlIO_exportFILE(f,0); | |
5006 | exported = TRUE; | |
5007 | } | |
5008 | if (stdio) { | |
14a5cf38 | 5009 | name = fgetname(stdio, buf); |
7659f319 CB |
5010 | if (exported) PerlIO_releaseFILE(f,stdio); |
5011 | } | |
73d840c0 | 5012 | return name; |
a15cef0c | 5013 | #else |
8772537c AL |
5014 | PERL_UNUSED_ARG(f); |
5015 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 5016 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 5017 | return NULL; |
a15cef0c | 5018 | #endif |
9e353e3b NIS |
5019 | } |
5020 | ||
5021 | ||
5022 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
5023 | /* |
5024 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 5025 | * terms of above |
14a5cf38 | 5026 | */ |
9e353e3b | 5027 | |
e87a358a NIS |
5028 | #undef PerlIO_fdopen |
5029 | PerlIO * | |
5030 | PerlIO_fdopen(int fd, const char *mode) | |
5031 | { | |
5032 | dTHX; | |
bd61b366 | 5033 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
5034 | } |
5035 | ||
5036 | #undef PerlIO_open | |
5037 | PerlIO * | |
5038 | PerlIO_open(const char *path, const char *mode) | |
5039 | { | |
5040 | dTHX; | |
42d9b98d | 5041 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 5042 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
5043 | } |
5044 | ||
5045 | #undef Perlio_reopen | |
5046 | PerlIO * | |
5047 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
5048 | { | |
5049 | dTHX; | |
42d9b98d | 5050 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 5051 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
5052 | } |
5053 | ||
9e353e3b | 5054 | #undef PerlIO_getc |
6f9d8c32 | 5055 | int |
9e353e3b | 5056 | PerlIO_getc(PerlIO *f) |
760ac839 | 5057 | { |
e87a358a | 5058 | dTHX; |
14a5cf38 | 5059 | STDCHAR buf[1]; |
de009b76 | 5060 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
5061 | return (unsigned char) buf[0]; |
5062 | } | |
5063 | return EOF; | |
313ca112 NIS |
5064 | } |
5065 | ||
5066 | #undef PerlIO_ungetc | |
5067 | int | |
5068 | PerlIO_ungetc(PerlIO *f, int ch) | |
5069 | { | |
e87a358a | 5070 | dTHX; |
14a5cf38 JH |
5071 | if (ch != EOF) { |
5072 | STDCHAR buf = ch; | |
5073 | if (PerlIO_unread(f, &buf, 1) == 1) | |
5074 | return ch; | |
5075 | } | |
5076 | return EOF; | |
760ac839 LW |
5077 | } |
5078 | ||
9e353e3b NIS |
5079 | #undef PerlIO_putc |
5080 | int | |
5081 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 5082 | { |
e87a358a | 5083 | dTHX; |
14a5cf38 JH |
5084 | STDCHAR buf = ch; |
5085 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5086 | } |
5087 | ||
9e353e3b | 5088 | #undef PerlIO_puts |
760ac839 | 5089 | int |
9e353e3b | 5090 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5091 | { |
e87a358a | 5092 | dTHX; |
dcda55fc | 5093 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5094 | } |
5095 | ||
5096 | #undef PerlIO_rewind | |
5097 | void | |
c78749f2 | 5098 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5099 | { |
e87a358a | 5100 | dTHX; |
14a5cf38 JH |
5101 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5102 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5103 | } |
5104 | ||
5105 | #undef PerlIO_vprintf | |
5106 | int | |
5107 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5108 | { | |
14a5cf38 | 5109 | dTHX; |
53ce71d3 | 5110 | SV * sv; |
b83604b4 | 5111 | const char *s; |
14a5cf38 JH |
5112 | STRLEN len; |
5113 | SSize_t wrote; | |
2cc61e15 | 5114 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5115 | va_list apc; |
5116 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5117 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 5118 | #else |
53ce71d3 | 5119 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5120 | #endif |
b83604b4 | 5121 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5122 | wrote = PerlIO_write(f, s, len); |
5123 | SvREFCNT_dec(sv); | |
5124 | return wrote; | |
760ac839 LW |
5125 | } |
5126 | ||
5127 | #undef PerlIO_printf | |
6f9d8c32 | 5128 | int |
14a5cf38 | 5129 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5130 | { |
14a5cf38 JH |
5131 | va_list ap; |
5132 | int result; | |
5133 | va_start(ap, fmt); | |
5134 | result = PerlIO_vprintf(f, fmt, ap); | |
5135 | va_end(ap); | |
5136 | return result; | |
760ac839 LW |
5137 | } |
5138 | ||
5139 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5140 | int |
14a5cf38 | 5141 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5142 | { |
e87a358a | 5143 | dTHX; |
14a5cf38 JH |
5144 | va_list ap; |
5145 | int result; | |
5146 | va_start(ap, fmt); | |
5147 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5148 | va_end(ap); | |
5149 | return result; | |
760ac839 LW |
5150 | } |
5151 | ||
5152 | #undef PerlIO_tmpfile | |
5153 | PerlIO * | |
c78749f2 | 5154 | PerlIO_tmpfile(void) |
760ac839 | 5155 | { |
2941a2e1 JH |
5156 | dTHX; |
5157 | PerlIO *f = NULL; | |
2941a2e1 | 5158 | #ifdef WIN32 |
de009b76 | 5159 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5160 | if (fd >= 0) |
5161 | f = PerlIO_fdopen(fd, "w+b"); | |
5162 | #else /* WIN32 */ | |
460c8493 | 5163 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
396482e1 | 5164 | SV * const sv = newSVpvs("/tmp/PerlIO_XXXXXX"); |
2941a2e1 JH |
5165 | /* |
5166 | * I have no idea how portable mkstemp() is ... NI-S | |
5167 | */ | |
de009b76 | 5168 | const int fd = mkstemp(SvPVX(sv)); |
2941a2e1 JH |
5169 | if (fd >= 0) { |
5170 | f = PerlIO_fdopen(fd, "w+"); | |
5171 | if (f) | |
5172 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
b15aece3 | 5173 | PerlLIO_unlink(SvPVX_const(sv)); |
2941a2e1 | 5174 | } |
b2166d27 | 5175 | SvREFCNT_dec(sv); |
2941a2e1 | 5176 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5177 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5178 | |
085e731f CB |
5179 | if (stdio) |
5180 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5181 | ||
2941a2e1 JH |
5182 | # endif /* else HAS_MKSTEMP */ |
5183 | #endif /* else WIN32 */ | |
5184 | return f; | |
760ac839 LW |
5185 | } |
5186 | ||
6f9d8c32 NIS |
5187 | #undef HAS_FSETPOS |
5188 | #undef HAS_FGETPOS | |
5189 | ||
22569500 NIS |
5190 | #endif /* USE_SFIO */ |
5191 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5192 | |
9e353e3b | 5193 | /*======================================================================================*/ |
14a5cf38 | 5194 | /* |
71200d45 NIS |
5195 | * Now some functions in terms of above which may be needed even if we are |
5196 | * not in true PerlIO mode | |
9e353e3b | 5197 | */ |
188f0c84 YO |
5198 | const char * |
5199 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5200 | { | |
5201 | dVAR; | |
8b850bd5 NC |
5202 | const char *direction = NULL; |
5203 | SV *layers; | |
188f0c84 YO |
5204 | /* |
5205 | * Need to supply default layer info from open.pm | |
5206 | */ | |
8b850bd5 NC |
5207 | |
5208 | if (!PL_curcop) | |
5209 | return NULL; | |
5210 | ||
5211 | if (mode && mode[0] != 'r') { | |
5212 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5213 | direction = "open>"; | |
5214 | } else { | |
5215 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5216 | direction = "open<"; | |
188f0c84 | 5217 | } |
8b850bd5 NC |
5218 | if (!direction) |
5219 | return NULL; | |
5220 | ||
5221 | layers = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, | |
5222 | 0, direction, 5, 0, 0); | |
5223 | ||
5224 | assert(layers); | |
5225 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5226 | } |
5227 | ||
9e353e3b | 5228 | |
760ac839 LW |
5229 | #ifndef HAS_FSETPOS |
5230 | #undef PerlIO_setpos | |
5231 | int | |
766a733e | 5232 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5233 | { |
14a5cf38 JH |
5234 | dTHX; |
5235 | if (SvOK(pos)) { | |
5236 | STRLEN len; | |
c4420975 | 5237 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5238 | if (f && len == sizeof(Off_t)) |
5239 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5240 | } | |
93189314 | 5241 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5242 | return -1; |
760ac839 | 5243 | } |
c411622e | 5244 | #else |
c411622e | 5245 | #undef PerlIO_setpos |
5246 | int | |
766a733e | 5247 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5248 | { |
14a5cf38 JH |
5249 | dTHX; |
5250 | if (SvOK(pos)) { | |
5251 | STRLEN len; | |
c4420975 | 5252 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5253 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5254 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5255 | return fsetpos64(f, fpos); |
d9b3e12d | 5256 | #else |
14a5cf38 | 5257 | return fsetpos(f, fpos); |
d9b3e12d | 5258 | #endif |
14a5cf38 | 5259 | } |
766a733e | 5260 | } |
93189314 | 5261 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5262 | return -1; |
c411622e | 5263 | } |
5264 | #endif | |
760ac839 LW |
5265 | |
5266 | #ifndef HAS_FGETPOS | |
5267 | #undef PerlIO_getpos | |
5268 | int | |
766a733e | 5269 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5270 | { |
14a5cf38 JH |
5271 | dTHX; |
5272 | Off_t posn = PerlIO_tell(f); | |
5273 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5274 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5275 | } |
c411622e | 5276 | #else |
c411622e | 5277 | #undef PerlIO_getpos |
5278 | int | |
766a733e | 5279 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5280 | { |
14a5cf38 JH |
5281 | dTHX; |
5282 | Fpos_t fpos; | |
5283 | int code; | |
2d4389e4 | 5284 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5285 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5286 | #else |
14a5cf38 | 5287 | code = fgetpos(f, &fpos); |
d9b3e12d | 5288 | #endif |
14a5cf38 JH |
5289 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5290 | return code; | |
c411622e | 5291 | } |
5292 | #endif | |
760ac839 LW |
5293 | |
5294 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5295 | ||
5296 | int | |
c78749f2 | 5297 | vprintf(char *pat, char *args) |
662a7e3f CS |
5298 | { |
5299 | _doprnt(pat, args, stdout); | |
22569500 | 5300 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5301 | * value */ |
662a7e3f CS |
5302 | } |
5303 | ||
5304 | int | |
c78749f2 | 5305 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5306 | { |
5307 | _doprnt(pat, args, fd); | |
22569500 | 5308 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5309 | * value */ |
760ac839 LW |
5310 | } |
5311 | ||
5312 | #endif | |
5313 | ||
5314 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5315 | int |
8ac85365 | 5316 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5317 | { |
8ff9a42b | 5318 | dTHX; |
d9fad198 | 5319 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5320 | PERL_UNUSED_CONTEXT; |
5321 | ||
1208b3dd JH |
5322 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5323 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5324 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5325 | } |
1208b3dd | 5326 | #endif |
14a5cf38 | 5327 | return val; |
760ac839 LW |
5328 | } |
5329 | #endif | |
5330 | ||
5331 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5332 | int |
14a5cf38 | 5333 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5334 | { |
14a5cf38 JH |
5335 | va_list ap; |
5336 | int result; | |
5337 | va_start(ap, fmt); | |
5338 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5339 | va_end(ap); | |
5340 | return result; | |
760ac839 LW |
5341 | } |
5342 | #endif | |
9cfa90c0 NC |
5343 | |
5344 | /* | |
5345 | * Local variables: | |
5346 | * c-indentation-style: bsd | |
5347 | * c-basic-offset: 4 | |
5348 | * indent-tabs-mode: t | |
5349 | * End: | |
5350 | * | |
37442d52 RGS |
5351 | * ex: set ts=8 sts=4 sw=4 noet: |
5352 | */ |