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 | { |
b32dd47e | 1630 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1631 | } |
1632 | ||
313ca112 | 1633 | SSize_t |
e87a358a | 1634 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1635 | { |
b32dd47e | 1636 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1637 | } |
1638 | ||
9e353e3b | 1639 | SSize_t |
e87a358a | 1640 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1641 | { |
b32dd47e | 1642 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1643 | } |
1644 | ||
6f9d8c32 | 1645 | int |
e87a358a | 1646 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1647 | { |
b32dd47e | 1648 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1649 | } |
1650 | ||
9e353e3b | 1651 | Off_t |
e87a358a | 1652 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1653 | { |
b32dd47e | 1654 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1655 | } |
1656 | ||
6f9d8c32 | 1657 | int |
e87a358a | 1658 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1659 | { |
97aff369 | 1660 | dVAR; |
14a5cf38 JH |
1661 | if (f) { |
1662 | if (*f) { | |
de009b76 | 1663 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1664 | |
1665 | if (tab && tab->Flush) | |
f62ce20a | 1666 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1667 | else |
1668 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1669 | } |
1670 | else { | |
fe5a182c | 1671 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1672 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1673 | return -1; |
1674 | } | |
1675 | } | |
1676 | else { | |
1677 | /* | |
1678 | * Is it good API design to do flush-all on NULL, a potentially | |
1679 | * errorneous input? Maybe some magical value (PerlIO* | |
1680 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1681 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1682 | * decisions? --jhi |
14a5cf38 | 1683 | */ |
a1ea730d | 1684 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1685 | int code = 0; |
1686 | while ((f = *table)) { | |
1687 | int i; | |
1688 | table = (PerlIO **) (f++); | |
1689 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1690 | if (*f && PerlIO_flush(f) != 0) | |
1691 | code = -1; | |
1692 | f++; | |
1693 | } | |
1694 | } | |
1695 | return code; | |
1696 | } | |
760ac839 LW |
1697 | } |
1698 | ||
a9c883f6 | 1699 | void |
f62ce20a | 1700 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1701 | { |
97aff369 | 1702 | dVAR; |
a1ea730d | 1703 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1704 | PerlIO *f; |
1705 | while ((f = *table)) { | |
1706 | int i; | |
1707 | table = (PerlIO **) (f++); | |
1708 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1709 | if (*f | |
1710 | && (PerlIOBase(f)-> | |
1711 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1712 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1713 | PerlIO_flush(f); | |
1714 | f++; | |
1715 | } | |
a9c883f6 | 1716 | } |
a9c883f6 NIS |
1717 | } |
1718 | ||
06da4f11 | 1719 | int |
e87a358a | 1720 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1721 | { |
b32dd47e | 1722 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1723 | } |
1724 | ||
f3862f8b NIS |
1725 | int |
1726 | PerlIO_isutf8(PerlIO *f) | |
1727 | { | |
1b7a0411 JH |
1728 | if (PerlIOValid(f)) |
1729 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1730 | else | |
1731 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1732 | |
1b7a0411 | 1733 | return -1; |
f3862f8b NIS |
1734 | } |
1735 | ||
6f9d8c32 | 1736 | int |
e87a358a | 1737 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1738 | { |
b32dd47e | 1739 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1740 | } |
1741 | ||
9e353e3b | 1742 | int |
e87a358a | 1743 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1744 | { |
b32dd47e | 1745 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1746 | } |
1747 | ||
9e353e3b | 1748 | void |
e87a358a | 1749 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1750 | { |
b32dd47e | 1751 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1752 | } |
1753 | ||
9e353e3b | 1754 | void |
e87a358a | 1755 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1756 | { |
b32dd47e | 1757 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1758 | } |
1759 | ||
9e353e3b NIS |
1760 | int |
1761 | PerlIO_has_base(PerlIO *f) | |
1762 | { | |
1b7a0411 | 1763 | if (PerlIOValid(f)) { |
46c461b5 | 1764 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1765 | |
1766 | if (tab) | |
1767 | return (tab->Get_base != NULL); | |
1768 | SETERRNO(EINVAL, LIB_INVARG); | |
1769 | } | |
1770 | else | |
1771 | SETERRNO(EBADF, SS_IVCHAN); | |
1772 | ||
1773 | return 0; | |
760ac839 LW |
1774 | } |
1775 | ||
9e353e3b NIS |
1776 | int |
1777 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1778 | { |
04892f78 | 1779 | if (PerlIOValid(f) && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) { |
46c461b5 | 1780 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1781 | |
1782 | if (tab) | |
1783 | return (tab->Set_ptrcnt != NULL); | |
1784 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1785 | } |
1b7a0411 JH |
1786 | else |
1787 | SETERRNO(EBADF, SS_IVCHAN); | |
1788 | ||
14a5cf38 | 1789 | return 0; |
9e353e3b NIS |
1790 | } |
1791 | ||
9e353e3b NIS |
1792 | int |
1793 | PerlIO_has_cntptr(PerlIO *f) | |
1794 | { | |
04892f78 | 1795 | if (PerlIOValid(f)) { |
46c461b5 | 1796 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1797 | |
1798 | if (tab) | |
1799 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1800 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1801 | } |
1b7a0411 JH |
1802 | else |
1803 | SETERRNO(EBADF, SS_IVCHAN); | |
1804 | ||
14a5cf38 | 1805 | return 0; |
9e353e3b NIS |
1806 | } |
1807 | ||
9e353e3b NIS |
1808 | int |
1809 | PerlIO_canset_cnt(PerlIO *f) | |
1810 | { | |
04892f78 | 1811 | if (PerlIOValid(f)) { |
46c461b5 | 1812 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1813 | |
1814 | if (tab) | |
1815 | return (tab->Set_ptrcnt != NULL); | |
1816 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1817 | } |
1b7a0411 JH |
1818 | else |
1819 | SETERRNO(EBADF, SS_IVCHAN); | |
1820 | ||
14a5cf38 | 1821 | return 0; |
760ac839 LW |
1822 | } |
1823 | ||
888911fc | 1824 | STDCHAR * |
e87a358a | 1825 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1826 | { |
b32dd47e | 1827 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1828 | } |
1829 | ||
9e353e3b | 1830 | int |
e87a358a | 1831 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1832 | { |
b32dd47e | 1833 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1834 | } |
1835 | ||
9e353e3b | 1836 | STDCHAR * |
e87a358a | 1837 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1838 | { |
b32dd47e | 1839 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1840 | } |
1841 | ||
05d1247b | 1842 | int |
e87a358a | 1843 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1844 | { |
b32dd47e | 1845 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1846 | } |
1847 | ||
9e353e3b | 1848 | void |
e87a358a | 1849 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1850 | { |
b32dd47e | 1851 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1852 | } |
1853 | ||
9e353e3b | 1854 | void |
e87a358a | 1855 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1856 | { |
b32dd47e | 1857 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1858 | } |
1859 | ||
4ec2216f | 1860 | |
9e353e3b | 1861 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1862 | /* |
71200d45 | 1863 | * utf8 and raw dummy layers |
14a5cf38 | 1864 | */ |
dfebf958 | 1865 | |
26fb694e | 1866 | IV |
2dc2558e | 1867 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1868 | { |
96a5add6 | 1869 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1870 | PERL_UNUSED_ARG(mode); |
1871 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1872 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1873 | if (tab->kind & PERLIO_K_UTF8) |
1874 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1875 | else | |
1876 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1877 | return 0; | |
1878 | } | |
1879 | return -1; | |
26fb694e NIS |
1880 | } |
1881 | ||
27da23d5 | 1882 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1883 | sizeof(PerlIO_funcs), |
14a5cf38 | 1884 | "utf8", |
2dc2558e | 1885 | 0, |
6874a2de | 1886 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1887 | PerlIOUtf8_pushed, |
1888 | NULL, | |
1889 | NULL, | |
1890 | NULL, | |
1891 | NULL, | |
1892 | NULL, | |
1893 | NULL, | |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
de009b76 AL |
1898 | NULL, |
1899 | NULL, | |
22569500 NIS |
1900 | NULL, /* flush */ |
1901 | NULL, /* fill */ | |
14a5cf38 JH |
1902 | NULL, |
1903 | NULL, | |
1904 | NULL, | |
1905 | NULL, | |
22569500 NIS |
1906 | NULL, /* get_base */ |
1907 | NULL, /* get_bufsiz */ | |
1908 | NULL, /* get_ptr */ | |
1909 | NULL, /* get_cnt */ | |
1910 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1911 | }; |
1912 | ||
27da23d5 | 1913 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1914 | sizeof(PerlIO_funcs), |
14a5cf38 | 1915 | "bytes", |
2dc2558e | 1916 | 0, |
14a5cf38 JH |
1917 | PERLIO_K_DUMMY, |
1918 | PerlIOUtf8_pushed, | |
1919 | NULL, | |
1920 | NULL, | |
1921 | NULL, | |
1922 | NULL, | |
1923 | NULL, | |
1924 | NULL, | |
1925 | NULL, | |
1926 | NULL, | |
1927 | NULL, | |
1928 | NULL, | |
de009b76 AL |
1929 | NULL, |
1930 | NULL, | |
22569500 NIS |
1931 | NULL, /* flush */ |
1932 | NULL, /* fill */ | |
14a5cf38 JH |
1933 | NULL, |
1934 | NULL, | |
1935 | NULL, | |
1936 | NULL, | |
22569500 NIS |
1937 | NULL, /* get_base */ |
1938 | NULL, /* get_bufsiz */ | |
1939 | NULL, /* get_ptr */ | |
1940 | NULL, /* get_cnt */ | |
1941 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1942 | }; |
1943 | ||
1944 | PerlIO * | |
14a5cf38 JH |
1945 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1946 | IV n, const char *mode, int fd, int imode, int perm, | |
1947 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1948 | { |
8772537c AL |
1949 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1950 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1951 | if (tab && tab->Open) |
1952 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1953 | old, narg, args); | |
1954 | SETERRNO(EINVAL, LIB_INVARG); | |
1955 | return NULL; | |
dfebf958 NIS |
1956 | } |
1957 | ||
27da23d5 | 1958 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1959 | sizeof(PerlIO_funcs), |
14a5cf38 | 1960 | "raw", |
2dc2558e | 1961 | 0, |
14a5cf38 JH |
1962 | PERLIO_K_DUMMY, |
1963 | PerlIORaw_pushed, | |
1964 | PerlIOBase_popped, | |
1965 | PerlIORaw_open, | |
1966 | NULL, | |
1967 | NULL, | |
1968 | NULL, | |
1969 | NULL, | |
1970 | NULL, | |
1971 | NULL, | |
1972 | NULL, | |
1973 | NULL, | |
de009b76 AL |
1974 | NULL, |
1975 | NULL, | |
22569500 NIS |
1976 | NULL, /* flush */ |
1977 | NULL, /* fill */ | |
14a5cf38 JH |
1978 | NULL, |
1979 | NULL, | |
1980 | NULL, | |
1981 | NULL, | |
22569500 NIS |
1982 | NULL, /* get_base */ |
1983 | NULL, /* get_bufsiz */ | |
1984 | NULL, /* get_ptr */ | |
1985 | NULL, /* get_cnt */ | |
1986 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1987 | }; |
1988 | /*--------------------------------------------------------------------------------------*/ | |
1989 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1990 | /* |
71200d45 | 1991 | * "Methods" of the "base class" |
14a5cf38 | 1992 | */ |
9e353e3b NIS |
1993 | |
1994 | IV | |
f62ce20a | 1995 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1996 | { |
04892f78 | 1997 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1998 | } |
1999 | ||
f5b9d040 | 2000 | char * |
81428673 | 2001 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
2002 | { |
2003 | char *s = buf; | |
81428673 | 2004 | if (PerlIOValid(f)) { |
de009b76 | 2005 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2006 | if (flags & PERLIO_F_APPEND) { |
2007 | *s++ = 'a'; | |
2008 | if (flags & PERLIO_F_CANREAD) { | |
2009 | *s++ = '+'; | |
2010 | } | |
14a5cf38 | 2011 | } |
81428673 NIS |
2012 | else if (flags & PERLIO_F_CANREAD) { |
2013 | *s++ = 'r'; | |
2014 | if (flags & PERLIO_F_CANWRITE) | |
2015 | *s++ = '+'; | |
2016 | } | |
2017 | else if (flags & PERLIO_F_CANWRITE) { | |
2018 | *s++ = 'w'; | |
2019 | if (flags & PERLIO_F_CANREAD) { | |
2020 | *s++ = '+'; | |
2021 | } | |
14a5cf38 | 2022 | } |
35990314 | 2023 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2024 | if (!(flags & PERLIO_F_CRLF)) |
2025 | *s++ = 'b'; | |
5f1a76d0 | 2026 | #endif |
81428673 | 2027 | } |
14a5cf38 JH |
2028 | *s = '\0'; |
2029 | return buf; | |
f5b9d040 NIS |
2030 | } |
2031 | ||
81428673 | 2032 | |
76ced9ad | 2033 | IV |
2dc2558e | 2034 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2035 | { |
de009b76 | 2036 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2037 | PERL_UNUSED_CONTEXT; |
8772537c | 2038 | PERL_UNUSED_ARG(arg); |
de009b76 | 2039 | |
14a5cf38 JH |
2040 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2041 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2042 | if (tab->Set_ptrcnt != NULL) | |
2043 | l->flags |= PERLIO_F_FASTGETS; | |
2044 | if (mode) { | |
3b6c1aba | 2045 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2046 | mode++; |
2047 | switch (*mode++) { | |
2048 | case 'r': | |
2049 | l->flags |= PERLIO_F_CANREAD; | |
2050 | break; | |
2051 | case 'a': | |
2052 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2053 | break; | |
2054 | case 'w': | |
2055 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2056 | break; | |
2057 | default: | |
93189314 | 2058 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2059 | return -1; |
2060 | } | |
2061 | while (*mode) { | |
2062 | switch (*mode++) { | |
2063 | case '+': | |
2064 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2065 | break; | |
2066 | case 'b': | |
2067 | l->flags &= ~PERLIO_F_CRLF; | |
2068 | break; | |
2069 | case 't': | |
2070 | l->flags |= PERLIO_F_CRLF; | |
2071 | break; | |
2072 | default: | |
93189314 | 2073 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2074 | return -1; |
2075 | } | |
2076 | } | |
2077 | } | |
2078 | else { | |
2079 | if (l->next) { | |
2080 | l->flags |= l->next->flags & | |
2081 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2082 | PERLIO_F_APPEND); | |
2083 | } | |
2084 | } | |
5e2ab84b | 2085 | #if 0 |
14a5cf38 | 2086 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2087 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2088 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2089 | #endif |
14a5cf38 | 2090 | return 0; |
76ced9ad NIS |
2091 | } |
2092 | ||
2093 | IV | |
f62ce20a | 2094 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2095 | { |
96a5add6 | 2096 | PERL_UNUSED_CONTEXT; |
8772537c | 2097 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2098 | return 0; |
760ac839 LW |
2099 | } |
2100 | ||
9e353e3b | 2101 | SSize_t |
f62ce20a | 2102 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2103 | { |
14a5cf38 | 2104 | /* |
71200d45 | 2105 | * Save the position as current head considers it |
14a5cf38 | 2106 | */ |
de009b76 | 2107 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2108 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2109 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2110 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2111 | } |
2112 | ||
f6c77cf1 | 2113 | SSize_t |
f62ce20a | 2114 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2115 | { |
14a5cf38 JH |
2116 | STDCHAR *buf = (STDCHAR *) vbuf; |
2117 | if (f) { | |
263df5f1 JH |
2118 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2119 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2120 | SETERRNO(EBADF, SS_IVCHAN); | |
2121 | return 0; | |
2122 | } | |
14a5cf38 | 2123 | while (count > 0) { |
93c2c2ec IZ |
2124 | get_cnt: |
2125 | { | |
14a5cf38 JH |
2126 | SSize_t avail = PerlIO_get_cnt(f); |
2127 | SSize_t take = 0; | |
2128 | if (avail > 0) | |
bb7a0f54 | 2129 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2130 | if (take > 0) { |
2131 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2132 | Copy(ptr, buf, take, STDCHAR); | |
2133 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2134 | count -= take; | |
2135 | buf += take; | |
93c2c2ec IZ |
2136 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2137 | goto get_cnt; | |
14a5cf38 JH |
2138 | } |
2139 | if (count > 0 && avail <= 0) { | |
2140 | if (PerlIO_fill(f) != 0) | |
2141 | break; | |
2142 | } | |
93c2c2ec | 2143 | } |
14a5cf38 JH |
2144 | } |
2145 | return (buf - (STDCHAR *) vbuf); | |
2146 | } | |
f6c77cf1 | 2147 | return 0; |
f6c77cf1 NIS |
2148 | } |
2149 | ||
9e353e3b | 2150 | IV |
f62ce20a | 2151 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2152 | { |
96a5add6 | 2153 | PERL_UNUSED_CONTEXT; |
8772537c | 2154 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2155 | return 0; |
9e353e3b NIS |
2156 | } |
2157 | ||
2158 | IV | |
f62ce20a | 2159 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2160 | { |
96a5add6 | 2161 | PERL_UNUSED_CONTEXT; |
8772537c | 2162 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2163 | return -1; |
06da4f11 NIS |
2164 | } |
2165 | ||
2166 | IV | |
f62ce20a | 2167 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2168 | { |
37725cdc NIS |
2169 | IV code = -1; |
2170 | if (PerlIOValid(f)) { | |
2171 | PerlIO *n = PerlIONext(f); | |
2172 | code = PerlIO_flush(f); | |
2173 | PerlIOBase(f)->flags &= | |
2174 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2175 | while (PerlIOValid(n)) { | |
de009b76 | 2176 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2177 | if (tab && tab->Close) { |
2178 | if ((*tab->Close)(aTHX_ n) != 0) | |
2179 | code = -1; | |
2180 | break; | |
2181 | } | |
2182 | else { | |
2183 | PerlIOBase(n)->flags &= | |
2184 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2185 | } | |
2186 | n = PerlIONext(n); | |
2187 | } | |
2188 | } | |
2189 | else { | |
2190 | SETERRNO(EBADF, SS_IVCHAN); | |
2191 | } | |
14a5cf38 | 2192 | return code; |
9e353e3b NIS |
2193 | } |
2194 | ||
2195 | IV | |
f62ce20a | 2196 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2197 | { |
96a5add6 | 2198 | PERL_UNUSED_CONTEXT; |
04892f78 | 2199 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2200 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2201 | } | |
2202 | return 1; | |
9e353e3b NIS |
2203 | } |
2204 | ||
2205 | IV | |
f62ce20a | 2206 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2207 | { |
96a5add6 | 2208 | PERL_UNUSED_CONTEXT; |
04892f78 | 2209 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2210 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2211 | } | |
2212 | return 1; | |
9e353e3b NIS |
2213 | } |
2214 | ||
2215 | void | |
f62ce20a | 2216 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2217 | { |
04892f78 | 2218 | if (PerlIOValid(f)) { |
dcda55fc | 2219 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2220 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2221 | if (PerlIOValid(n)) |
14a5cf38 JH |
2222 | PerlIO_clearerr(n); |
2223 | } | |
9e353e3b NIS |
2224 | } |
2225 | ||
2226 | void | |
f62ce20a | 2227 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2228 | { |
96a5add6 | 2229 | PERL_UNUSED_CONTEXT; |
04892f78 | 2230 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2231 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2232 | } | |
9e353e3b NIS |
2233 | } |
2234 | ||
93a8090d NIS |
2235 | SV * |
2236 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2237 | { | |
2238 | if (!arg) | |
a0714e2c | 2239 | return NULL; |
93a8090d NIS |
2240 | #ifdef sv_dup |
2241 | if (param) { | |
a951d81d BL |
2242 | arg = sv_dup(arg, param); |
2243 | SvREFCNT_inc_simple_void_NN(arg); | |
2244 | return arg; | |
93a8090d NIS |
2245 | } |
2246 | else { | |
2247 | return newSVsv(arg); | |
2248 | } | |
2249 | #else | |
1b6737cc | 2250 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2251 | return newSVsv(arg); |
2252 | #endif | |
2253 | } | |
2254 | ||
2255 | PerlIO * | |
ecdeb87c | 2256 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2257 | { |
1b6737cc | 2258 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2259 | if (PerlIOValid(nexto)) { |
de009b76 | 2260 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2261 | if (tab && tab->Dup) |
2262 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2263 | else | |
2264 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2265 | } |
2266 | if (f) { | |
dcda55fc | 2267 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2268 | SV *arg = NULL; |
93a8090d | 2269 | char buf[8]; |
fe5a182c JH |
2270 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2271 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2272 | if (self->Getarg) |
2273 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2274 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2275 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2276 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
a951d81d | 2277 | if (arg) |
93a8090d | 2278 | SvREFCNT_dec(arg); |
93a8090d NIS |
2279 | } |
2280 | return f; | |
2281 | } | |
2282 | ||
27da23d5 | 2283 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2284 | |
8b84d7dd | 2285 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2286 | static void |
2287 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2288 | dVAR; |
22c96fc1 | 2289 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2290 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2291 | int *new_array; |
2292 | ||
2293 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2294 | old_max, new_fd, new_max); | |
2295 | ||
2296 | if (new_fd < old_max) { | |
2297 | return; | |
2298 | } | |
2299 | ||
f4ae5be6 NC |
2300 | assert (new_max > new_fd); |
2301 | ||
eae082a0 JH |
2302 | /* Use plain realloc() since we need this memory to be really |
2303 | * global and visible to all the interpreters and/or threads. */ | |
2304 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2305 | |
2306 | if (!new_array) { | |
8b84d7dd | 2307 | #ifdef USE_ITHREADS |
6cb8cb21 | 2308 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2309 | #endif |
2310 | /* Can't use PerlIO to write as it allocates memory */ | |
2311 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2312 | PL_no_mem, strlen(PL_no_mem)); | |
2313 | my_exit(1); | |
2314 | } | |
2315 | ||
2316 | PL_perlio_fd_refcnt_size = new_max; | |
2317 | PL_perlio_fd_refcnt = new_array; | |
2318 | ||
95b63a38 JH |
2319 | PerlIO_debug("Zeroing %p, %d\n", |
2320 | (void*)(new_array + old_max), | |
2321 | new_max - old_max); | |
22c96fc1 NC |
2322 | |
2323 | Zero(new_array + old_max, new_max - old_max, int); | |
2324 | } | |
2325 | ||
2326 | ||
93a8090d NIS |
2327 | void |
2328 | PerlIO_init(pTHX) | |
2329 | { | |
8b84d7dd | 2330 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2331 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2332 | } |
2333 | ||
168d5872 NIS |
2334 | void |
2335 | PerlIOUnix_refcnt_inc(int fd) | |
2336 | { | |
27da23d5 | 2337 | dTHX; |
22c96fc1 | 2338 | if (fd >= 0) { |
97aff369 | 2339 | dVAR; |
22c96fc1 | 2340 | |
8b84d7dd | 2341 | #ifdef USE_ITHREADS |
6cb8cb21 | 2342 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2343 | #endif |
22c96fc1 NC |
2344 | if (fd >= PL_perlio_fd_refcnt_size) |
2345 | S_more_refcounted_fds(aTHX_ fd); | |
2346 | ||
27da23d5 | 2347 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd RGS |
2348 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
2349 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2350 | fd, PL_perlio_fd_refcnt[fd]); | |
2351 | } | |
2352 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2353 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2354 | |
8b84d7dd | 2355 | #ifdef USE_ITHREADS |
6cb8cb21 | 2356 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2357 | #endif |
8b84d7dd RGS |
2358 | } else { |
2359 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2360 | } |
2361 | } | |
2362 | ||
168d5872 NIS |
2363 | int |
2364 | PerlIOUnix_refcnt_dec(int fd) | |
2365 | { | |
27da23d5 | 2366 | dTHX; |
168d5872 | 2367 | int cnt = 0; |
22c96fc1 | 2368 | if (fd >= 0) { |
97aff369 | 2369 | dVAR; |
8b84d7dd | 2370 | #ifdef USE_ITHREADS |
6cb8cb21 | 2371 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2372 | #endif |
8b84d7dd RGS |
2373 | if (fd >= PL_perlio_fd_refcnt_size) { |
2374 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", | |
2375 | fd, PL_perlio_fd_refcnt_size); | |
2376 | } | |
2377 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2378 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", | |
2379 | fd, PL_perlio_fd_refcnt[fd]); | |
2380 | } | |
27da23d5 | 2381 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2382 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2383 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2384 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2385 | #endif |
8b84d7dd RGS |
2386 | } else { |
2387 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2388 | } |
2389 | return cnt; | |
2390 | } | |
2391 | ||
694c95cf JH |
2392 | void |
2393 | PerlIO_cleanup(pTHX) | |
2394 | { | |
97aff369 | 2395 | dVAR; |
694c95cf JH |
2396 | int i; |
2397 | #ifdef USE_ITHREADS | |
a25429c6 | 2398 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2399 | #else |
2400 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2401 | #endif |
e47547a8 | 2402 | |
694c95cf JH |
2403 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2404 | for (i=0; i < 3; i++) | |
2405 | PerlIOUnix_refcnt_inc(i); | |
2406 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2407 | /* Restore STDIN..STDERR refcount */ | |
2408 | for (i=0; i < 3; i++) | |
2409 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2410 | |
2411 | if (PL_known_layers) { | |
2412 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2413 | PL_known_layers = NULL; | |
2414 | } | |
27da23d5 | 2415 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2416 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2417 | PL_def_layerlist = NULL; | |
2418 | } | |
6cb8cb21 RGS |
2419 | } |
2420 | ||
77db880c | 2421 | void PerlIO_teardown() /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2422 | { |
53d44271 | 2423 | dVAR; |
4f3da17a DM |
2424 | #if 0 |
2425 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2426 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2427 | being present (at least in win32) :-(. | |
2428 | Disable for now. | |
2429 | */ | |
6cb8cb21 RGS |
2430 | #ifdef DEBUGGING |
2431 | { | |
2432 | /* By now all filehandles should have been closed, so any | |
2433 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2434 | * errors. */ | |
77db880c JH |
2435 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2436 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2437 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2438 | int i; |
2439 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2440 | if (PL_perlio_fd_refcnt[i]) { |
2441 | const STRLEN len = | |
2442 | my_snprintf(buf, sizeof(buf), | |
2443 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2444 | i, PL_perlio_fd_refcnt[i]); | |
2445 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2446 | } | |
6cb8cb21 RGS |
2447 | } |
2448 | } | |
2449 | #endif | |
4f3da17a | 2450 | #endif |
eae082a0 JH |
2451 | /* Not bothering with PL_perlio_mutex since by now |
2452 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2453 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2454 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2455 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2456 | PL_perlio_fd_refcnt = NULL; |
2457 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2458 | } |
694c95cf JH |
2459 | } |
2460 | ||
9e353e3b | 2461 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2462 | /* |
71200d45 | 2463 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2464 | */ |
9e353e3b | 2465 | |
14a5cf38 | 2466 | typedef struct { |
22569500 NIS |
2467 | struct _PerlIO base; /* The generic part */ |
2468 | int fd; /* UNIX like file descriptor */ | |
2469 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2470 | } PerlIOUnix; |
2471 | ||
6f9d8c32 | 2472 | int |
9e353e3b | 2473 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2474 | { |
14a5cf38 | 2475 | int oflags = -1; |
3b6c1aba | 2476 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2477 | mode++; |
2478 | switch (*mode) { | |
2479 | case 'r': | |
2480 | oflags = O_RDONLY; | |
2481 | if (*++mode == '+') { | |
2482 | oflags = O_RDWR; | |
2483 | mode++; | |
2484 | } | |
2485 | break; | |
2486 | ||
2487 | case 'w': | |
2488 | oflags = O_CREAT | O_TRUNC; | |
2489 | if (*++mode == '+') { | |
2490 | oflags |= O_RDWR; | |
2491 | mode++; | |
2492 | } | |
2493 | else | |
2494 | oflags |= O_WRONLY; | |
2495 | break; | |
2496 | ||
2497 | case 'a': | |
2498 | oflags = O_CREAT | O_APPEND; | |
2499 | if (*++mode == '+') { | |
2500 | oflags |= O_RDWR; | |
2501 | mode++; | |
2502 | } | |
2503 | else | |
2504 | oflags |= O_WRONLY; | |
2505 | break; | |
2506 | } | |
2507 | if (*mode == 'b') { | |
2508 | oflags |= O_BINARY; | |
2509 | oflags &= ~O_TEXT; | |
2510 | mode++; | |
2511 | } | |
2512 | else if (*mode == 't') { | |
2513 | oflags |= O_TEXT; | |
2514 | oflags &= ~O_BINARY; | |
2515 | mode++; | |
2516 | } | |
2517 | /* | |
71200d45 | 2518 | * Always open in binary mode |
14a5cf38 JH |
2519 | */ |
2520 | oflags |= O_BINARY; | |
2521 | if (*mode || oflags == -1) { | |
93189314 | 2522 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2523 | oflags = -1; |
2524 | } | |
2525 | return oflags; | |
9e353e3b NIS |
2526 | } |
2527 | ||
2528 | IV | |
f62ce20a | 2529 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2530 | { |
96a5add6 | 2531 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2532 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2533 | } |
2534 | ||
aa063c35 NIS |
2535 | static void |
2536 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2537 | { |
de009b76 | 2538 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2539 | #if defined(WIN32) |
aa063c35 NIS |
2540 | Stat_t st; |
2541 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2542 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2543 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2544 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2545 | } | |
aa063c35 NIS |
2546 | else { |
2547 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2548 | } | |
6caa5a9c NIS |
2549 | } |
2550 | #endif | |
aa063c35 NIS |
2551 | s->fd = fd; |
2552 | s->oflags = imode; | |
2553 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2554 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2555 | } |
2556 | ||
2557 | IV | |
2558 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2559 | { | |
2560 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2561 | if (*PerlIONext(f)) { |
4b069b44 | 2562 | /* We never call down so do any pending stuff now */ |
03c0554d | 2563 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2564 | /* |
71200d45 | 2565 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2566 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2567 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2568 | */ |
acbd16bf | 2569 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2570 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2571 | } |
2572 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2573 | |
14a5cf38 | 2574 | return code; |
4b803d04 NIS |
2575 | } |
2576 | ||
c2fcde81 JH |
2577 | IV |
2578 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2579 | { | |
de009b76 | 2580 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2581 | Off_t new_loc; |
96a5add6 | 2582 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2583 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2584 | #ifdef ESPIPE | |
2585 | SETERRNO(ESPIPE, LIB_INVARG); | |
2586 | #else | |
2587 | SETERRNO(EINVAL, LIB_INVARG); | |
2588 | #endif | |
2589 | return -1; | |
2590 | } | |
0723351e NC |
2591 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2592 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2593 | return -1; |
c2fcde81 JH |
2594 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2595 | return 0; | |
2596 | } | |
2597 | ||
9e353e3b | 2598 | PerlIO * |
14a5cf38 JH |
2599 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2600 | IV n, const char *mode, int fd, int imode, | |
2601 | int perm, PerlIO *f, int narg, SV **args) | |
2602 | { | |
d9dac8cd | 2603 | if (PerlIOValid(f)) { |
14a5cf38 | 2604 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2605 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2606 | } |
2607 | if (narg > 0) { | |
3b6c1aba | 2608 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2609 | mode++; |
2610 | else { | |
2611 | imode = PerlIOUnix_oflags(mode); | |
2612 | perm = 0666; | |
2613 | } | |
2614 | if (imode != -1) { | |
e62f0680 | 2615 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2616 | fd = PerlLIO_open3(path, imode, perm); |
2617 | } | |
2618 | } | |
2619 | if (fd >= 0) { | |
3b6c1aba | 2620 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2621 | mode++; |
2622 | if (!f) { | |
2623 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2624 | } |
2625 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2626 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2627 | return NULL; | |
2628 | } | |
d9dac8cd | 2629 | } |
aa063c35 | 2630 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2631 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2632 | if (*mode == IoTYPE_APPEND) |
2633 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2634 | return f; |
2635 | } | |
2636 | else { | |
2637 | if (f) { | |
6f207bd3 | 2638 | NOOP; |
14a5cf38 | 2639 | /* |
71200d45 | 2640 | * FIXME: pop layers ??? |
14a5cf38 JH |
2641 | */ |
2642 | } | |
2643 | return NULL; | |
2644 | } | |
9e353e3b NIS |
2645 | } |
2646 | ||
71200d45 | 2647 | PerlIO * |
ecdeb87c | 2648 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2649 | { |
dcda55fc | 2650 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2651 | int fd = os->fd; |
ecdeb87c NIS |
2652 | if (flags & PERLIO_DUP_FD) { |
2653 | fd = PerlLIO_dup(fd); | |
2654 | } | |
22c96fc1 | 2655 | if (fd >= 0) { |
ecdeb87c | 2656 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2657 | if (f) { |
2658 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2659 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2660 | return f; |
2661 | } | |
71200d45 NIS |
2662 | } |
2663 | return NULL; | |
2664 | } | |
2665 | ||
2666 | ||
9e353e3b | 2667 | SSize_t |
f62ce20a | 2668 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2669 | { |
97aff369 | 2670 | dVAR; |
de009b76 | 2671 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2672 | #ifdef PERLIO_STD_SPECIAL |
2673 | if (fd == 0) | |
2674 | return PERLIO_STD_IN(fd, vbuf, count); | |
2675 | #endif | |
81428673 | 2676 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2677 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2678 | return 0; |
1fd8f4ce | 2679 | } |
14a5cf38 | 2680 | while (1) { |
b464bac0 | 2681 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2682 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2683 | if (len < 0) { |
2684 | if (errno != EAGAIN) { | |
2685 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2686 | } | |
2687 | } | |
2688 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2689 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2690 | SETERRNO(0,0); |
2691 | } | |
14a5cf38 JH |
2692 | return len; |
2693 | } | |
2694 | PERL_ASYNC_CHECK(); | |
2695 | } | |
b464bac0 | 2696 | /*NOTREACHED*/ |
9e353e3b NIS |
2697 | } |
2698 | ||
2699 | SSize_t | |
f62ce20a | 2700 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2701 | { |
97aff369 | 2702 | dVAR; |
de009b76 | 2703 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2704 | #ifdef PERLIO_STD_SPECIAL |
2705 | if (fd == 1 || fd == 2) | |
2706 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2707 | #endif | |
14a5cf38 | 2708 | while (1) { |
de009b76 | 2709 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2710 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2711 | if (len < 0) { |
2712 | if (errno != EAGAIN) { | |
2713 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2714 | } | |
2715 | } | |
14a5cf38 JH |
2716 | return len; |
2717 | } | |
2718 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2719 | } |
1b6737cc | 2720 | /*NOTREACHED*/ |
9e353e3b NIS |
2721 | } |
2722 | ||
9e353e3b | 2723 | Off_t |
f62ce20a | 2724 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2725 | { |
96a5add6 AL |
2726 | PERL_UNUSED_CONTEXT; |
2727 | ||
14a5cf38 | 2728 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2729 | } |
2730 | ||
71200d45 | 2731 | |
9e353e3b | 2732 | IV |
f62ce20a | 2733 | PerlIOUnix_close(pTHX_ PerlIO *f) |
9e353e3b | 2734 | { |
97aff369 | 2735 | dVAR; |
de009b76 | 2736 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2737 | int code = 0; |
168d5872 NIS |
2738 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2739 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2740 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2741 | return 0; | |
22569500 | 2742 | } |
93a8090d NIS |
2743 | } |
2744 | else { | |
93189314 | 2745 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2746 | return -1; |
2747 | } | |
14a5cf38 JH |
2748 | while (PerlLIO_close(fd) != 0) { |
2749 | if (errno != EINTR) { | |
2750 | code = -1; | |
2751 | break; | |
2752 | } | |
2753 | PERL_ASYNC_CHECK(); | |
2754 | } | |
2755 | if (code == 0) { | |
2756 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2757 | } | |
2758 | return code; | |
9e353e3b NIS |
2759 | } |
2760 | ||
27da23d5 | 2761 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2762 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2763 | "unix", |
2764 | sizeof(PerlIOUnix), | |
2765 | PERLIO_K_RAW, | |
2766 | PerlIOUnix_pushed, | |
44798d05 | 2767 | PerlIOBase_popped, |
14a5cf38 | 2768 | PerlIOUnix_open, |
86e05cf2 | 2769 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2770 | NULL, |
2771 | PerlIOUnix_fileno, | |
71200d45 | 2772 | PerlIOUnix_dup, |
14a5cf38 JH |
2773 | PerlIOUnix_read, |
2774 | PerlIOBase_unread, | |
2775 | PerlIOUnix_write, | |
2776 | PerlIOUnix_seek, | |
2777 | PerlIOUnix_tell, | |
2778 | PerlIOUnix_close, | |
22569500 NIS |
2779 | PerlIOBase_noop_ok, /* flush */ |
2780 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2781 | PerlIOBase_eof, |
2782 | PerlIOBase_error, | |
2783 | PerlIOBase_clearerr, | |
2784 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2785 | NULL, /* get_base */ |
2786 | NULL, /* get_bufsiz */ | |
2787 | NULL, /* get_ptr */ | |
2788 | NULL, /* get_cnt */ | |
2789 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2790 | }; |
2791 | ||
2792 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2793 | /* |
71200d45 | 2794 | * stdio as a layer |
14a5cf38 | 2795 | */ |
9e353e3b | 2796 | |
313e59c8 NIS |
2797 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2798 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2799 | broken by the last second glibc 2.3 fix | |
2800 | */ | |
2801 | #define STDIO_BUFFER_WRITABLE | |
2802 | #endif | |
2803 | ||
2804 | ||
14a5cf38 JH |
2805 | typedef struct { |
2806 | struct _PerlIO base; | |
22569500 | 2807 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2808 | } PerlIOStdio; |
2809 | ||
2810 | IV | |
f62ce20a | 2811 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2812 | { |
96a5add6 AL |
2813 | PERL_UNUSED_CONTEXT; |
2814 | ||
c4420975 AL |
2815 | if (PerlIOValid(f)) { |
2816 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2817 | if (s) | |
2818 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2819 | } |
2820 | errno = EBADF; | |
2821 | return -1; | |
9e353e3b NIS |
2822 | } |
2823 | ||
766a733e | 2824 | char * |
14a5cf38 JH |
2825 | PerlIOStdio_mode(const char *mode, char *tmode) |
2826 | { | |
de009b76 | 2827 | char * const ret = tmode; |
a0625d38 SR |
2828 | if (mode) { |
2829 | while (*mode) { | |
2830 | *tmode++ = *mode++; | |
2831 | } | |
14a5cf38 | 2832 | } |
95005ad8 | 2833 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2834 | *tmode++ = 'b'; |
2835 | #endif | |
14a5cf38 JH |
2836 | *tmode = '\0'; |
2837 | return ret; | |
2838 | } | |
2839 | ||
4b803d04 | 2840 | IV |
2dc2558e | 2841 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2842 | { |
1fd8f4ce NIS |
2843 | PerlIO *n; |
2844 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2845 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2846 | if (toptab == tab) { |
2847 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2848 | PerlIO_pop(aTHX_ f); | |
2849 | return 0; | |
2850 | } else { | |
de009b76 | 2851 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2852 | char tmode[8]; |
2853 | FILE *stdio; | |
81428673 | 2854 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2855 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2856 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2857 | /* We never call down so do any pending stuff now */ | |
2858 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2859 | } |
1fd8f4ce NIS |
2860 | else { |
2861 | return -1; | |
2862 | } | |
2863 | } | |
14a5cf38 | 2864 | } |
2dc2558e | 2865 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2866 | } |
2867 | ||
22569500 | 2868 | |
9e353e3b | 2869 | PerlIO * |
4b069b44 | 2870 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2871 | { |
14a5cf38 JH |
2872 | dTHX; |
2873 | PerlIO *f = NULL; | |
2874 | if (stdio) { | |
22569500 | 2875 | PerlIOStdio *s; |
4b069b44 NIS |
2876 | if (!mode || !*mode) { |
2877 | /* We need to probe to see how we can open the stream | |
2878 | so start with read/write and then try write and read | |
2879 | we dup() so that we can fclose without loosing the fd. | |
2880 | ||
2881 | Note that the errno value set by a failing fdopen | |
2882 | varies between stdio implementations. | |
2883 | */ | |
de009b76 | 2884 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2885 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2886 | if (!f2) { |
a33cf58c | 2887 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2888 | } |
2889 | if (!f2) { | |
a33cf58c | 2890 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2891 | } |
2892 | if (!f2) { | |
2893 | /* Don't seem to be able to open */ | |
2894 | PerlLIO_close(fd); | |
2895 | return f; | |
2896 | } | |
2897 | fclose(f2); | |
22569500 | 2898 | } |
a0714e2c | 2899 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2900 | s = PerlIOSelf(f, PerlIOStdio); |
2901 | s->stdio = stdio; | |
c586124f | 2902 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2903 | } |
14a5cf38 JH |
2904 | } |
2905 | return f; | |
9e353e3b NIS |
2906 | } |
2907 | ||
2908 | PerlIO * | |
14a5cf38 JH |
2909 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2910 | IV n, const char *mode, int fd, int imode, | |
2911 | int perm, PerlIO *f, int narg, SV **args) | |
2912 | { | |
2913 | char tmode[8]; | |
d9dac8cd | 2914 | if (PerlIOValid(f)) { |
dcda55fc AL |
2915 | const char * const path = SvPV_nolen_const(*args); |
2916 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2917 | FILE *stdio; |
2918 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2919 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2920 | s->stdio); |
2921 | if (!s->stdio) | |
2922 | return NULL; | |
2923 | s->stdio = stdio; | |
1751d015 | 2924 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2925 | return f; |
2926 | } | |
2927 | else { | |
2928 | if (narg > 0) { | |
dcda55fc | 2929 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2930 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2931 | mode++; |
2932 | fd = PerlLIO_open3(path, imode, perm); | |
2933 | } | |
2934 | else { | |
95005ad8 GH |
2935 | FILE *stdio; |
2936 | bool appended = FALSE; | |
2937 | #ifdef __CYGWIN__ | |
2938 | /* Cygwin wants its 'b' early. */ | |
2939 | appended = TRUE; | |
2940 | mode = PerlIOStdio_mode(mode, tmode); | |
2941 | #endif | |
2942 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2943 | if (stdio) { |
6f0313ac JH |
2944 | if (!f) { |
2945 | f = PerlIO_allocate(aTHX); | |
2946 | } | |
95005ad8 GH |
2947 | if (!appended) |
2948 | mode = PerlIOStdio_mode(mode, tmode); | |
2949 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2950 | if (f) { | |
0f0f9e2b JH |
2951 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2952 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
2953 | } else { | |
2954 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
2955 | } |
2956 | return f; | |
2957 | } | |
2958 | else { | |
2959 | return NULL; | |
2960 | } | |
14a5cf38 JH |
2961 | } |
2962 | } | |
2963 | if (fd >= 0) { | |
2964 | FILE *stdio = NULL; | |
2965 | int init = 0; | |
3b6c1aba | 2966 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2967 | init = 1; |
2968 | mode++; | |
2969 | } | |
2970 | if (init) { | |
2971 | switch (fd) { | |
2972 | case 0: | |
2973 | stdio = PerlSIO_stdin; | |
2974 | break; | |
2975 | case 1: | |
2976 | stdio = PerlSIO_stdout; | |
2977 | break; | |
2978 | case 2: | |
2979 | stdio = PerlSIO_stderr; | |
2980 | break; | |
2981 | } | |
2982 | } | |
2983 | else { | |
2984 | stdio = PerlSIO_fdopen(fd, mode = | |
2985 | PerlIOStdio_mode(mode, tmode)); | |
2986 | } | |
2987 | if (stdio) { | |
d9dac8cd NIS |
2988 | if (!f) { |
2989 | f = PerlIO_allocate(aTHX); | |
2990 | } | |
a33cf58c | 2991 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
2992 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2993 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 2994 | } |
14a5cf38 JH |
2995 | return f; |
2996 | } | |
2997 | } | |
2998 | } | |
ee518936 | 2999 | return NULL; |
9e353e3b NIS |
3000 | } |
3001 | ||
1751d015 | 3002 | PerlIO * |
ecdeb87c | 3003 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3004 | { |
3005 | /* This assumes no layers underneath - which is what | |
3006 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3007 | */ | |
ecdeb87c | 3008 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3009 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3010 | const int fd = fileno(stdio); |
9217ff3f | 3011 | char mode[8]; |
ecdeb87c | 3012 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3013 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3014 | if (dfd >= 0) { |
3015 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3016 | goto set_this; | |
ecdeb87c NIS |
3017 | } |
3018 | else { | |
6f207bd3 | 3019 | NOOP; |
ecdeb87c NIS |
3020 | /* FIXME: To avoid messy error recovery if dup fails |
3021 | re-use the existing stdio as though flag was not set | |
3022 | */ | |
3023 | } | |
3024 | } | |
9217ff3f NIS |
3025 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3026 | set_this: | |
694c95cf JH |
3027 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3028 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
1751d015 NIS |
3029 | } |
3030 | return f; | |
3031 | } | |
3032 | ||
0d7a5398 NIS |
3033 | static int |
3034 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3035 | { | |
96a5add6 AL |
3036 | PERL_UNUSED_CONTEXT; |
3037 | ||
0d7a5398 | 3038 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3039 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3040 | */ |
ef8eacb8 AT |
3041 | # if defined(__UCLIBC__) |
3042 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3043 | f->__filedes = -1; | |
3044 | return 1; | |
3045 | # elif defined(__GLIBC__) | |
0d7a5398 | 3046 | /* There may be a better way for GLIBC: |
37725cdc | 3047 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3048 | */ |
3049 | f->_fileno = -1; | |
3050 | return 1; | |
3051 | # elif defined(__sun__) | |
f5992bc4 | 3052 | PERL_UNUSED_ARG(f); |
cfedb851 | 3053 | return 0; |
0d7a5398 NIS |
3054 | # elif defined(__hpux) |
3055 | f->__fileH = 0xff; | |
3056 | f->__fileL = 0xff; | |
3057 | return 1; | |
9837d373 | 3058 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3059 | your platform does not have special entry try this one. |
9837d373 NIS |
3060 | [For OSF only have confirmation for Tru64 (alpha) |
3061 | but assume other OSFs will be similar.] | |
37725cdc | 3062 | */ |
9837d373 | 3063 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3064 | f->_file = -1; |
3065 | return 1; | |
3066 | # elif defined(__FreeBSD__) | |
3067 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3068 | - we could insert a dummy func in the _close function entry |
3069 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3070 | */ |
3071 | f->_file = -1; | |
0c49ea6a SU |
3072 | return 1; |
3073 | # elif defined(__OpenBSD__) | |
3074 | /* There may be a better way on OpenBSD: | |
3075 | - we could insert a dummy func in the _close function entry | |
3076 | f->_close = (int (*)(void *)) dummy_close; | |
3077 | */ | |
3078 | f->_file = -1; | |
0d7a5398 | 3079 | return 1; |
59ad941d IZ |
3080 | # elif defined(__EMX__) |
3081 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3082 | f->_handle = -1; | |
3083 | return 1; | |
0d7a5398 NIS |
3084 | # elif defined(__CYGWIN__) |
3085 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3086 | - we could insert a dummy func in the _close function entry |
3087 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3088 | */ |
3089 | f->_file = -1; | |
3090 | return 1; | |
3091 | # elif defined(WIN32) | |
3092 | # if defined(__BORLANDC__) | |
3093 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3094 | # elif defined(UNDER_CE) |
3095 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3096 | structure at all | |
3097 | */ | |
0d7a5398 NIS |
3098 | # else |
3099 | f->_file = -1; | |
3100 | # endif | |
3101 | return 1; | |
3102 | # else | |
3103 | #if 0 | |
37725cdc | 3104 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3105 | (which isn't thread safe) instead |
37725cdc | 3106 | */ |
0d7a5398 NIS |
3107 | # error "Don't know how to set FILE.fileno on your platform" |
3108 | #endif | |
8772537c | 3109 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3110 | return 0; |
3111 | # endif | |
3112 | } | |
3113 | ||
1751d015 | 3114 | IV |
f62ce20a | 3115 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3116 | { |
c4420975 | 3117 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3118 | if (!stdio) { |
3119 | errno = EBADF; | |
3120 | return -1; | |
3121 | } | |
9217ff3f | 3122 | else { |
de009b76 | 3123 | const int fd = fileno(stdio); |
0d7a5398 | 3124 | int invalidate = 0; |
bbfd922f | 3125 | IV result = 0; |
0d7a5398 NIS |
3126 | int saveerr = 0; |
3127 | int dupfd = 0; | |
3128 | #ifdef SOCKS5_VERSION_NAME | |
37725cdc NIS |
3129 | /* Socks lib overrides close() but stdio isn't linked to |
3130 | that library (though we are) - so we must call close() | |
3131 | on sockets on stdio's behalf. | |
3132 | */ | |
0d7a5398 NIS |
3133 | int optval; |
3134 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3135 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3136 | invalidate = 1; |
0d7a5398 | 3137 | #endif |
6b4ce6c8 | 3138 | if (PerlIOUnix_refcnt_dec(fd) > 0) /* File descriptor still in use */ |
0d7a5398 | 3139 | invalidate = 1; |
0d7a5398 | 3140 | if (invalidate) { |
6b4ce6c8 AL |
3141 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3142 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3143 | return 0; | |
3144 | if (stdio == stdout || stdio == stderr) | |
3145 | return PerlIO_flush(f); | |
37725cdc NIS |
3146 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3147 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3148 | fileno slot of the FILE * | |
3149 | */ | |
bbfd922f | 3150 | result = PerlIO_flush(f); |
0d7a5398 | 3151 | saveerr = errno; |
6b4ce6c8 AL |
3152 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
3153 | if (!invalidate) | |
3154 | dupfd = PerlLIO_dup(fd); | |
37725cdc | 3155 | } |
0d7a5398 | 3156 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3157 | /* We treat error from stdio as success if we invalidated |
3158 | errno may NOT be expected EBADF | |
e8529473 NIS |
3159 | */ |
3160 | if (invalidate && result != 0) { | |
0d7a5398 NIS |
3161 | errno = saveerr; |
3162 | result = 0; | |
37725cdc | 3163 | } |
6b4ce6c8 AL |
3164 | #ifdef SOCKS5_VERSION_NAME |
3165 | /* in SOCKS' case, let close() determine return value */ | |
3166 | result = close(fd); | |
3167 | #endif | |
0d7a5398 NIS |
3168 | if (dupfd) { |
3169 | PerlLIO_dup2(dupfd,fd); | |
8a521f28 | 3170 | PerlLIO_close(dupfd); |
9217ff3f NIS |
3171 | } |
3172 | return result; | |
37725cdc | 3173 | } |
1751d015 NIS |
3174 | } |
3175 | ||
9e353e3b | 3176 | SSize_t |
f62ce20a | 3177 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3178 | { |
97aff369 | 3179 | dVAR; |
c4420975 | 3180 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3181 | SSize_t got = 0; |
4d948241 NIS |
3182 | for (;;) { |
3183 | if (count == 1) { | |
3184 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3185 | /* | |
3186 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3187 | * stdio does not do that for fread() | |
3188 | */ | |
de009b76 | 3189 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3190 | if (ch != EOF) { |
3191 | *buf = ch; | |
3192 | got = 1; | |
3193 | } | |
14a5cf38 | 3194 | } |
4d948241 NIS |
3195 | else |
3196 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3197 | if (got == 0 && PerlSIO_ferror(s)) |
3198 | got = -1; | |
42a7a32f | 3199 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3200 | break; |
3201 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3202 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3203 | } |
14a5cf38 | 3204 | return got; |
9e353e3b NIS |
3205 | } |
3206 | ||
3207 | SSize_t | |
f62ce20a | 3208 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3209 | { |
14a5cf38 | 3210 | SSize_t unread = 0; |
c4420975 | 3211 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3212 | |
313e59c8 | 3213 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3214 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3215 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3216 | STDCHAR *base = PerlIO_get_base(f); | |
3217 | SSize_t cnt = PerlIO_get_cnt(f); | |
3218 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3219 | SSize_t avail = ptr - base; | |
3220 | if (avail > 0) { | |
3221 | if (avail > count) { | |
3222 | avail = count; | |
3223 | } | |
3224 | ptr -= avail; | |
3225 | Move(buf-avail,ptr,avail,STDCHAR); | |
3226 | count -= avail; | |
3227 | unread += avail; | |
3228 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3229 | if (PerlSIO_feof(s) && unread >= 0) |
3230 | PerlSIO_clearerr(s); | |
3231 | } | |
3232 | } | |
313e59c8 NIS |
3233 | else |
3234 | #endif | |
3235 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3236 | /* We can get pointer to buffer but not its base |
3237 | Do ungetc() but check chars are ending up in the | |
3238 | buffer | |
3239 | */ | |
3240 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3241 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3242 | while (count > 0) { | |
de009b76 | 3243 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3244 | if (ungetc(ch,s) != ch) { |
3245 | /* ungetc did not work */ | |
3246 | break; | |
3247 | } | |
3248 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3249 | /* Did not change pointer as expected */ | |
3250 | fgetc(s); /* get char back again */ | |
3251 | break; | |
3252 | } | |
3253 | /* It worked ! */ | |
3254 | count--; | |
3255 | unread++; | |
93679785 NIS |
3256 | } |
3257 | } | |
3258 | ||
3259 | if (count > 0) { | |
3260 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3261 | } |
3262 | return unread; | |
9e353e3b NIS |
3263 | } |
3264 | ||
3265 | SSize_t | |
f62ce20a | 3266 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3267 | { |
97aff369 | 3268 | dVAR; |
4d948241 NIS |
3269 | SSize_t got; |
3270 | for (;;) { | |
3271 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3272 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3273 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3274 | break; |
3275 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3276 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3277 | } |
3278 | return got; | |
9e353e3b NIS |
3279 | } |
3280 | ||
94a175e1 | 3281 | IV |
f62ce20a | 3282 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3283 | { |
c4420975 | 3284 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3285 | PERL_UNUSED_CONTEXT; |
3286 | ||
94a175e1 | 3287 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3288 | } |
3289 | ||
3290 | Off_t | |
f62ce20a | 3291 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3292 | { |
c4420975 | 3293 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3294 | PERL_UNUSED_CONTEXT; |
3295 | ||
94a175e1 | 3296 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3297 | } |
3298 | ||
3299 | IV | |
f62ce20a | 3300 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3301 | { |
c4420975 | 3302 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3303 | PERL_UNUSED_CONTEXT; |
3304 | ||
14a5cf38 JH |
3305 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3306 | return PerlSIO_fflush(stdio); | |
3307 | } | |
3308 | else { | |
6f207bd3 | 3309 | NOOP; |
88b61e10 | 3310 | #if 0 |
14a5cf38 JH |
3311 | /* |
3312 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3313 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3314 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3315 | * layer read-to-read |
14a5cf38 JH |
3316 | */ |
3317 | /* | |
71200d45 | 3318 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3319 | */ |
79852593 | 3320 | const int err = errno; |
14a5cf38 JH |
3321 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
3322 | errno = err; | |
88b61e10 | 3323 | #endif |
14a5cf38 JH |
3324 | } |
3325 | return 0; | |
9e353e3b NIS |
3326 | } |
3327 | ||
3328 | IV | |
f62ce20a | 3329 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3330 | { |
96a5add6 AL |
3331 | PERL_UNUSED_CONTEXT; |
3332 | ||
14a5cf38 | 3333 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3334 | } |
3335 | ||
3336 | IV | |
f62ce20a | 3337 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3338 | { |
96a5add6 AL |
3339 | PERL_UNUSED_CONTEXT; |
3340 | ||
263df5f1 | 3341 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3342 | } |
3343 | ||
3344 | void | |
f62ce20a | 3345 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3346 | { |
96a5add6 AL |
3347 | PERL_UNUSED_CONTEXT; |
3348 | ||
14a5cf38 | 3349 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3350 | } |
3351 | ||
3352 | void | |
f62ce20a | 3353 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3354 | { |
96a5add6 AL |
3355 | PERL_UNUSED_CONTEXT; |
3356 | ||
9e353e3b | 3357 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3358 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3359 | #else |
bd61b366 | 3360 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3361 | #endif |
3362 | } | |
3363 | ||
3364 | #ifdef FILE_base | |
3365 | STDCHAR * | |
f62ce20a | 3366 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3367 | { |
c4420975 | 3368 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3369 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3370 | } |
3371 | ||
3372 | Size_t | |
f62ce20a | 3373 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3374 | { |
c4420975 | 3375 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3376 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3377 | } |
3378 | #endif | |
3379 | ||
3380 | #ifdef USE_STDIO_PTR | |
3381 | STDCHAR * | |
f62ce20a | 3382 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3383 | { |
c4420975 | 3384 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3385 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3386 | } |
3387 | ||
3388 | SSize_t | |
f62ce20a | 3389 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3390 | { |
c4420975 | 3391 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3392 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3393 | } |
3394 | ||
3395 | void | |
f62ce20a | 3396 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3397 | { |
c4420975 | 3398 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3399 | if (ptr != NULL) { |
9e353e3b | 3400 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3401 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3402 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3403 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3404 | #endif |
3405 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3406 | /* |
71200d45 | 3407 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3408 | */ |
3409 | return; | |
9e353e3b | 3410 | #endif |
22569500 | 3411 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3412 | PerlProc_abort(); |
22569500 | 3413 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3414 | } |
3415 | /* | |
71200d45 | 3416 | * Now (or only) set cnt |
14a5cf38 | 3417 | */ |
9e353e3b | 3418 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3419 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3420 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3421 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3422 | PerlSIO_set_ptr(stdio, |
3423 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3424 | cnt)); | |
22569500 | 3425 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3426 | PerlProc_abort(); |
22569500 NIS |
3427 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3428 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3429 | } |
3430 | ||
93679785 | 3431 | |
9e353e3b NIS |
3432 | #endif |
3433 | ||
93679785 NIS |
3434 | IV |
3435 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3436 | { | |
c4420975 | 3437 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3438 | int c; |
96a5add6 AL |
3439 | PERL_UNUSED_CONTEXT; |
3440 | ||
93679785 NIS |
3441 | /* |
3442 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3443 | */ | |
3444 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3445 | if (PerlSIO_fflush(stdio) != 0) | |
3446 | return EOF; | |
3447 | } | |
f3be3723 BL |
3448 | for (;;) { |
3449 | c = PerlSIO_fgetc(stdio); | |
3450 | if (c != EOF) | |
3451 | break; | |
3452 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3453 | return EOF; | |
3454 | PERL_ASYNC_CHECK(); | |
3455 | SETERRNO(0,0); | |
3456 | } | |
93679785 NIS |
3457 | |
3458 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3459 | |
3460 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3461 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3462 | /* Fake ungetc() to the real buffer in case system's ungetc |
3463 | goes elsewhere | |
3464 | */ | |
3465 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3466 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3467 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3468 | if (ptr == base+1) { | |
3469 | *--ptr = (STDCHAR) c; | |
3470 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3471 | if (PerlSIO_feof(stdio)) | |
3472 | PerlSIO_clearerr(stdio); | |
3473 | return 0; | |
3474 | } | |
3475 | } | |
313e59c8 NIS |
3476 | else |
3477 | #endif | |
3478 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3479 | STDCHAR ch = c; |
3480 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3481 | return 0; | |
3482 | } | |
3483 | } | |
93679785 NIS |
3484 | #endif |
3485 | ||
3486 | #if defined(VMS) | |
3487 | /* An ungetc()d char is handled separately from the regular | |
3488 | * buffer, so we stuff it in the buffer ourselves. | |
3489 | * Should never get called as should hit code above | |
3490 | */ | |
bad9695d NIS |
3491 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3492 | (*stdio)->_cnt++; | |
93679785 NIS |
3493 | #else |
3494 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3495 | using ungetc(). |
93679785 NIS |
3496 | */ |
3497 | if (PerlSIO_ungetc(c, stdio) != c) | |
3498 | return EOF; | |
3499 | #endif | |
3500 | return 0; | |
3501 | } | |
3502 | ||
3503 | ||
3504 | ||
27da23d5 | 3505 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3506 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3507 | "stdio", |
3508 | sizeof(PerlIOStdio), | |
86e05cf2 | 3509 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3510 | PerlIOStdio_pushed, |
44798d05 | 3511 | PerlIOBase_popped, |
14a5cf38 | 3512 | PerlIOStdio_open, |
86e05cf2 | 3513 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3514 | NULL, |
3515 | PerlIOStdio_fileno, | |
71200d45 | 3516 | PerlIOStdio_dup, |
14a5cf38 JH |
3517 | PerlIOStdio_read, |
3518 | PerlIOStdio_unread, | |
3519 | PerlIOStdio_write, | |
3520 | PerlIOStdio_seek, | |
3521 | PerlIOStdio_tell, | |
3522 | PerlIOStdio_close, | |
3523 | PerlIOStdio_flush, | |
3524 | PerlIOStdio_fill, | |
3525 | PerlIOStdio_eof, | |
3526 | PerlIOStdio_error, | |
3527 | PerlIOStdio_clearerr, | |
3528 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3529 | #ifdef FILE_base |
14a5cf38 JH |
3530 | PerlIOStdio_get_base, |
3531 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3532 | #else |
14a5cf38 JH |
3533 | NULL, |
3534 | NULL, | |
9e353e3b NIS |
3535 | #endif |
3536 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3537 | PerlIOStdio_get_ptr, |
3538 | PerlIOStdio_get_cnt, | |
15b61c98 | 3539 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3540 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3541 | # else |
3542 | NULL, | |
3543 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3544 | #else | |
3545 | NULL, | |
14a5cf38 JH |
3546 | NULL, |
3547 | NULL, | |
15b61c98 | 3548 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3549 | }; |
3550 | ||
b9d6bf13 JH |
3551 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3552 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3553 | FILE * |
81428673 | 3554 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3555 | { |
e87a358a | 3556 | dTHX; |
81428673 NIS |
3557 | FILE *stdio = NULL; |
3558 | if (PerlIOValid(f)) { | |
3559 | char buf[8]; | |
3560 | PerlIO_flush(f); | |
3561 | if (!mode || !*mode) { | |
3562 | mode = PerlIO_modestr(f, buf); | |
3563 | } | |
3564 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3565 | if (stdio) { | |
3566 | PerlIOl *l = *f; | |
9f75cc58 | 3567 | PerlIO *f2; |
81428673 NIS |
3568 | /* De-link any lower layers so new :stdio sticks */ |
3569 | *f = NULL; | |
a0714e2c | 3570 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3571 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3572 | s->stdio = stdio; |
6b54a403 | 3573 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3574 | /* Link previous lower layers under new one */ |
3575 | *PerlIONext(f) = l; | |
3576 | } | |
3577 | else { | |
3578 | /* restore layers list */ | |
3579 | *f = l; | |
3580 | } | |
a33cf58c | 3581 | } |
14a5cf38 JH |
3582 | } |
3583 | return stdio; | |
9e353e3b NIS |
3584 | } |
3585 | ||
81428673 | 3586 | |
9e353e3b NIS |
3587 | FILE * |
3588 | PerlIO_findFILE(PerlIO *f) | |
3589 | { | |
14a5cf38 | 3590 | PerlIOl *l = *f; |
bbbc33d0 | 3591 | FILE *stdio; |
14a5cf38 JH |
3592 | while (l) { |
3593 | if (l->tab == &PerlIO_stdio) { | |
3594 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3595 | return s->stdio; | |
3596 | } | |
3597 | l = *PerlIONext(&l); | |
f7e7eb72 | 3598 | } |
4b069b44 | 3599 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3600 | /* However, we're not really exporting a FILE * to someone else (who |
3601 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
3602 | So we need to undo its refernce count increase on the underlying file | |
3603 | descriptor. We have to do this, because if the loop above returns you | |
3604 | the FILE *, then *it* didn't increase any reference count. So there's | |
3605 | only one way to be consistent. */ | |
3606 | stdio = PerlIO_exportFILE(f, NULL); | |
3607 | if (stdio) { | |
3608 | const int fd = fileno(stdio); | |
3609 | if (fd >= 0) | |
3610 | PerlIOUnix_refcnt_dec(fd); | |
3611 | } | |
3612 | return stdio; | |
9e353e3b NIS |
3613 | } |
3614 | ||
b9d6bf13 | 3615 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3616 | void |
3617 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3618 | { | |
27da23d5 | 3619 | dVAR; |
22569500 NIS |
3620 | PerlIOl *l; |
3621 | while ((l = *p)) { | |
3622 | if (l->tab == &PerlIO_stdio) { | |
3623 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3624 | if (s->stdio == f) { | |
3625 | dTHX; | |
6b54a403 NC |
3626 | const int fd = fileno(f); |
3627 | if (fd >= 0) | |
3628 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3629 | PerlIO_pop(aTHX_ p); |
3630 | return; | |
3631 | } | |
3632 | } | |
3633 | p = PerlIONext(p); | |
3634 | } | |
3635 | return; | |
9e353e3b NIS |
3636 | } |
3637 | ||
3638 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3639 | /* |
71200d45 | 3640 | * perlio buffer layer |
14a5cf38 | 3641 | */ |
9e353e3b | 3642 | |
5e2ab84b | 3643 | IV |
2dc2558e | 3644 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3645 | { |
14a5cf38 | 3646 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3647 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3648 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3649 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3650 | } | |
4b069b44 | 3651 | if (*PerlIONext(f)) { |
de009b76 | 3652 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3653 | if (posn != (Off_t) - 1) { |
3654 | b->posn = posn; | |
3655 | } | |
14a5cf38 | 3656 | } |
2dc2558e | 3657 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3658 | } |
3659 | ||
9e353e3b | 3660 | PerlIO * |
14a5cf38 JH |
3661 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3662 | IV n, const char *mode, int fd, int imode, int perm, | |
3663 | PerlIO *f, int narg, SV **args) | |
3664 | { | |
04892f78 | 3665 | if (PerlIOValid(f)) { |
14a5cf38 | 3666 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3667 | PerlIO_funcs *tab = |
3668 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3669 | if (tab && tab->Open) | |
3670 | next = | |
3671 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3672 | next, narg, args); | |
2dc2558e | 3673 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3674 | return NULL; |
3675 | } | |
3676 | } | |
3677 | else { | |
04892f78 | 3678 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3679 | int init = 0; |
3b6c1aba | 3680 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3681 | init = 1; |
3682 | /* | |
71200d45 | 3683 | * mode++; |
14a5cf38 JH |
3684 | */ |
3685 | } | |
67363c0d JH |
3686 | if (tab && tab->Open) |
3687 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3688 | f, narg, args); | |
3689 | else | |
3690 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3691 | if (f) { |
22569500 | 3692 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3693 | /* |
3694 | * if push fails during open, open fails. close will pop us. | |
3695 | */ | |
3696 | PerlIO_close (f); | |
3697 | return NULL; | |
3698 | } else { | |
3699 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3700 | if (init && fd == 2) { |
3701 | /* | |
3702 | * Initial stderr is unbuffered | |
3703 | */ | |
3704 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3705 | } | |
23b84778 IZ |
3706 | #ifdef PERLIO_USING_CRLF |
3707 | # ifdef PERLIO_IS_BINMODE_FD | |
3708 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3709 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3710 | else |
3711 | # endif | |
3712 | /* | |
3713 | * do something about failing setmode()? --jhi | |
3714 | */ | |
3715 | PerlLIO_setmode(fd, O_BINARY); | |
3716 | #endif | |
14a5cf38 JH |
3717 | } |
3718 | } | |
ee518936 | 3719 | } |
14a5cf38 | 3720 | return f; |
9e353e3b NIS |
3721 | } |
3722 | ||
14a5cf38 JH |
3723 | /* |
3724 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3725 | * read or write state. For write state, we put the postponed data through |
3726 | * the next layers. For read state, we seek() the next layers to the | |
3727 | * offset given by current position in the buffer, and discard the buffer | |
3728 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3729 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3730 | */ |
9e353e3b | 3731 | IV |
f62ce20a | 3732 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3733 | { |
dcda55fc | 3734 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3735 | int code = 0; |
04892f78 | 3736 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3737 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3738 | /* | |
71200d45 | 3739 | * write() the buffer |
14a5cf38 | 3740 | */ |
de009b76 AL |
3741 | const STDCHAR *buf = b->buf; |
3742 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3743 | while (p < b->ptr) { |
3744 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3745 | if (count > 0) { | |
3746 | p += count; | |
3747 | } | |
3748 | else if (count < 0 || PerlIO_error(n)) { | |
3749 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3750 | code = -1; | |
3751 | break; | |
3752 | } | |
3753 | } | |
3754 | b->posn += (p - buf); | |
3755 | } | |
3756 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3757 | STDCHAR *buf = PerlIO_get_base(f); | |
3758 | /* | |
71200d45 | 3759 | * Note position change |
14a5cf38 JH |
3760 | */ |
3761 | b->posn += (b->ptr - buf); | |
3762 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3763 | /* We did not consume all of it - try and seek downstream to |
3764 | our logical position | |
14a5cf38 | 3765 | */ |
4b069b44 | 3766 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3767 | /* Reload n as some layers may pop themselves on seek */ |
3768 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3769 | } |
ba5c3fe9 | 3770 | else { |
4b069b44 NIS |
3771 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3772 | data is lost for good - so return saying "ok" having undone | |
3773 | the position adjust | |
3774 | */ | |
3775 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3776 | return code; |
3777 | } | |
14a5cf38 JH |
3778 | } |
3779 | } | |
3780 | b->ptr = b->end = b->buf; | |
3781 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3782 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3783 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3784 | code = -1; |
3785 | return code; | |
6f9d8c32 NIS |
3786 | } |
3787 | ||
93c2c2ec IZ |
3788 | /* This discards the content of the buffer after b->ptr, and rereads |
3789 | * the buffer from the position off in the layer downstream; here off | |
3790 | * is at offset corresponding to b->ptr - b->buf. | |
3791 | */ | |
06da4f11 | 3792 | IV |
f62ce20a | 3793 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3794 | { |
dcda55fc | 3795 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3796 | PerlIO *n = PerlIONext(f); |
3797 | SSize_t avail; | |
3798 | /* | |
4b069b44 NIS |
3799 | * Down-stream flush is defined not to loose read data so is harmless. |
3800 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3801 | */ |
93c2c2ec | 3802 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3803 | return -1; |
3804 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3805 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3806 | |
3807 | if (!b->buf) | |
22569500 | 3808 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3809 | |
0f0eef27 | 3810 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3811 | |
14a5cf38 | 3812 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3813 | |
3814 | if (!PerlIOValid(n)) { | |
3815 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3816 | return -1; | |
3817 | } | |
3818 | ||
14a5cf38 JH |
3819 | if (PerlIO_fast_gets(n)) { |
3820 | /* | |
04892f78 | 3821 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3822 | * ->Read() because that will loop till it gets what we asked for |
3823 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3824 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3825 | */ |
3826 | avail = PerlIO_get_cnt(n); | |
3827 | if (avail <= 0) { | |
3828 | avail = PerlIO_fill(n); | |
3829 | if (avail == 0) | |
3830 | avail = PerlIO_get_cnt(n); | |
3831 | else { | |
3832 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3833 | avail = 0; | |
3834 | } | |
3835 | } | |
3836 | if (avail > 0) { | |
3837 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3838 | const SSize_t cnt = avail; |
eb160463 | 3839 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3840 | avail = b->bufsiz; |
3841 | Copy(ptr, b->buf, avail, STDCHAR); | |
3842 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3843 | } | |
3844 | } | |
3845 | else { | |
3846 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3847 | } | |
3848 | if (avail <= 0) { | |
3849 | if (avail == 0) | |
3850 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3851 | else | |
3852 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3853 | return -1; | |
3854 | } | |
3855 | b->end = b->buf + avail; | |
3856 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3857 | return 0; | |
06da4f11 NIS |
3858 | } |
3859 | ||
6f9d8c32 | 3860 | SSize_t |
f62ce20a | 3861 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3862 | { |
04892f78 | 3863 | if (PerlIOValid(f)) { |
dcda55fc | 3864 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3865 | if (!b->ptr) |
3866 | PerlIO_get_base(f); | |
f62ce20a | 3867 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3868 | } |
3869 | return 0; | |
6f9d8c32 NIS |
3870 | } |
3871 | ||
9e353e3b | 3872 | SSize_t |
f62ce20a | 3873 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3874 | { |
14a5cf38 | 3875 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3876 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3877 | SSize_t unread = 0; |
3878 | SSize_t avail; | |
3879 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3880 | PerlIO_flush(f); | |
3881 | if (!b->buf) | |
3882 | PerlIO_get_base(f); | |
3883 | if (b->buf) { | |
3884 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3885 | /* | |
3886 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3887 | * which have been read back to buffer start |
14a5cf38 JH |
3888 | */ |
3889 | avail = (b->ptr - b->buf); | |
3890 | } | |
3891 | else { | |
3892 | /* | |
3893 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3894 | * unread |
14a5cf38 JH |
3895 | */ |
3896 | avail = b->bufsiz; | |
3897 | b->end = b->buf + avail; | |
3898 | b->ptr = b->end; | |
3899 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3900 | /* | |
71200d45 | 3901 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3902 | */ |
3903 | b->posn -= b->bufsiz; | |
3904 | } | |
3905 | if (avail > (SSize_t) count) { | |
3906 | /* | |
71200d45 | 3907 | * If we have space for more than count, just move count |
14a5cf38 JH |
3908 | */ |
3909 | avail = count; | |
3910 | } | |
3911 | if (avail > 0) { | |
3912 | b->ptr -= avail; | |
3913 | buf -= avail; | |
3914 | /* | |
3915 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3916 | * there |
14a5cf38 JH |
3917 | */ |
3918 | if (buf != b->ptr) { | |
3919 | Copy(buf, b->ptr, avail, STDCHAR); | |
3920 | } | |
3921 | count -= avail; | |
3922 | unread += avail; | |
3923 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3924 | } | |
3925 | } | |
93679785 NIS |
3926 | if (count > 0) { |
3927 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3928 | } | |
14a5cf38 | 3929 | return unread; |
760ac839 LW |
3930 | } |
3931 | ||
9e353e3b | 3932 | SSize_t |
f62ce20a | 3933 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3934 | { |
de009b76 | 3935 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3936 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3937 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3938 | Size_t written = 0; |
3939 | if (!b->buf) | |
3940 | PerlIO_get_base(f); | |
3941 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3942 | return 0; | |
0678cb22 NIS |
3943 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3944 | if (PerlIO_flush(f) != 0) { | |
3945 | return 0; | |
3946 | } | |
3947 | } | |
ee56a6b9 CS |
3948 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
3949 | flushptr = buf + count; | |
3950 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
3951 | --flushptr; | |
3952 | } | |
14a5cf38 JH |
3953 | while (count > 0) { |
3954 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
3955 | if ((SSize_t) count < avail) | |
3956 | avail = count; | |
ee56a6b9 CS |
3957 | if (flushptr > buf && flushptr <= buf + avail) |
3958 | avail = flushptr - buf; | |
14a5cf38 | 3959 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
3960 | if (avail) { |
3961 | Copy(buf, b->ptr, avail, STDCHAR); | |
3962 | count -= avail; | |
3963 | buf += avail; | |
3964 | written += avail; | |
3965 | b->ptr += avail; | |
3966 | if (buf == flushptr) | |
3967 | PerlIO_flush(f); | |
14a5cf38 JH |
3968 | } |
3969 | if (b->ptr >= (b->buf + b->bufsiz)) | |
3970 | PerlIO_flush(f); | |
3971 | } | |
3972 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
3973 | PerlIO_flush(f); | |
3974 | return written; | |
9e353e3b NIS |
3975 | } |
3976 | ||
94a175e1 | 3977 | IV |
f62ce20a | 3978 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3979 | { |
14a5cf38 JH |
3980 | IV code; |
3981 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
3982 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
3983 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
3984 | if (code == 0) { | |
de009b76 | 3985 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3986 | b->posn = PerlIO_tell(PerlIONext(f)); |
3987 | } | |
9e353e3b | 3988 | } |
14a5cf38 | 3989 | return code; |
9e353e3b NIS |
3990 | } |
3991 | ||
3992 | Off_t | |
f62ce20a | 3993 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 3994 | { |
dcda55fc | 3995 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3996 | /* |
71200d45 | 3997 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
3998 | */ |
3999 | Off_t posn = b->posn; | |
37725cdc | 4000 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4001 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4002 | #if 1 | |
4003 | /* As O_APPEND files are normally shared in some sense it is better | |
4004 | to flush : | |
4005 | */ | |
4006 | PerlIO_flush(f); | |
4007 | #else | |
37725cdc | 4008 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4009 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4010 | #endif | |
4011 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4012 | } | |
14a5cf38 JH |
4013 | if (b->buf) { |
4014 | /* | |
71200d45 | 4015 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4016 | */ |
4017 | posn += (b->ptr - b->buf); | |
4018 | } | |
4019 | return posn; | |
9e353e3b NIS |
4020 | } |
4021 | ||
4022 | IV | |
44798d05 NIS |
4023 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4024 | { | |
de009b76 AL |
4025 | const IV code = PerlIOBase_popped(aTHX_ f); |
4026 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4027 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4028 | Safefree(b->buf); | |
4029 | } | |
dcda55fc | 4030 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4031 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4032 | return code; | |
4033 | } | |
4034 | ||
4035 | IV | |
f62ce20a | 4036 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4037 | { |
de009b76 AL |
4038 | const IV code = PerlIOBase_close(aTHX_ f); |
4039 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4040 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4041 | Safefree(b->buf); |
14a5cf38 | 4042 | } |
dcda55fc | 4043 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4044 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4045 | return code; | |
760ac839 LW |
4046 | } |
4047 | ||
9e353e3b | 4048 | STDCHAR * |
f62ce20a | 4049 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4050 | { |
dcda55fc | 4051 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4052 | if (!b->buf) |
4053 | PerlIO_get_base(f); | |
4054 | return b->ptr; | |
9e353e3b NIS |
4055 | } |
4056 | ||
05d1247b | 4057 | SSize_t |
f62ce20a | 4058 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4059 | { |
dcda55fc | 4060 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4061 | if (!b->buf) |
4062 | PerlIO_get_base(f); | |
4063 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4064 | return (b->end - b->ptr); | |
4065 | return 0; | |
9e353e3b NIS |
4066 | } |
4067 | ||
4068 | STDCHAR * | |
f62ce20a | 4069 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4070 | { |
dcda55fc | 4071 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4072 | PERL_UNUSED_CONTEXT; |
4073 | ||
14a5cf38 JH |
4074 | if (!b->buf) { |
4075 | if (!b->bufsiz) | |
4076 | b->bufsiz = 4096; | |
a02a5408 | 4077 | b->buf = Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4078 | if (!b->buf) { |
4079 | b->buf = (STDCHAR *) & b->oneword; | |
4080 | b->bufsiz = sizeof(b->oneword); | |
4081 | } | |
dcda55fc | 4082 | b->end = b->ptr = b->buf; |
06da4f11 | 4083 | } |
14a5cf38 | 4084 | return b->buf; |
9e353e3b NIS |
4085 | } |
4086 | ||
4087 | Size_t | |
f62ce20a | 4088 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4089 | { |
dcda55fc | 4090 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4091 | if (!b->buf) |
4092 | PerlIO_get_base(f); | |
4093 | return (b->end - b->buf); | |
9e353e3b NIS |
4094 | } |
4095 | ||
4096 | void | |
f62ce20a | 4097 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4098 | { |
dcda55fc | 4099 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4100 | if (!b->buf) |
4101 | PerlIO_get_base(f); | |
4102 | b->ptr = ptr; | |
b727803b RGS |
4103 | assert(PerlIO_get_cnt(f) == cnt); |
4104 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4105 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4106 | } |
4107 | ||
71200d45 | 4108 | PerlIO * |
ecdeb87c | 4109 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4110 | { |
ecdeb87c | 4111 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4112 | } |
4113 | ||
4114 | ||
4115 | ||
27da23d5 | 4116 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4117 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4118 | "perlio", |
4119 | sizeof(PerlIOBuf), | |
86e05cf2 | 4120 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4121 | PerlIOBuf_pushed, |
44798d05 | 4122 | PerlIOBuf_popped, |
14a5cf38 | 4123 | PerlIOBuf_open, |
86e05cf2 | 4124 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4125 | NULL, |
4126 | PerlIOBase_fileno, | |
71200d45 | 4127 | PerlIOBuf_dup, |
14a5cf38 JH |
4128 | PerlIOBuf_read, |
4129 | PerlIOBuf_unread, | |
4130 | PerlIOBuf_write, | |
4131 | PerlIOBuf_seek, | |
4132 | PerlIOBuf_tell, | |
4133 | PerlIOBuf_close, | |
4134 | PerlIOBuf_flush, | |
4135 | PerlIOBuf_fill, | |
4136 | PerlIOBase_eof, | |
4137 | PerlIOBase_error, | |
4138 | PerlIOBase_clearerr, | |
4139 | PerlIOBase_setlinebuf, | |
4140 | PerlIOBuf_get_base, | |
4141 | PerlIOBuf_bufsiz, | |
4142 | PerlIOBuf_get_ptr, | |
4143 | PerlIOBuf_get_cnt, | |
4144 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4145 | }; |
4146 | ||
66ecd56b | 4147 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4148 | /* |
71200d45 | 4149 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4150 | */ |
5e2ab84b NIS |
4151 | |
4152 | IV | |
f62ce20a | 4153 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4154 | { |
14a5cf38 | 4155 | /* |
71200d45 | 4156 | * Should never happen |
14a5cf38 JH |
4157 | */ |
4158 | PerlIO_flush(f); | |
4159 | return 0; | |
5e2ab84b NIS |
4160 | } |
4161 | ||
4162 | IV | |
f62ce20a | 4163 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4164 | { |
14a5cf38 | 4165 | /* |
71200d45 | 4166 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4167 | */ |
4168 | PerlIO_flush(f); | |
4169 | return PerlIO_close(f); | |
5e2ab84b NIS |
4170 | } |
4171 | ||
94a175e1 | 4172 | IV |
f62ce20a | 4173 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4174 | { |
14a5cf38 | 4175 | /* |
71200d45 | 4176 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4177 | */ |
4178 | PerlIO_flush(f); | |
4179 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4180 | } |
4181 | ||
4182 | ||
4183 | IV | |
f62ce20a | 4184 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4185 | { |
dcda55fc | 4186 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4187 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4188 | Safefree(b->buf); |
14a5cf38 JH |
4189 | b->buf = NULL; |
4190 | } | |
4191 | PerlIO_pop(aTHX_ f); | |
4192 | return 0; | |
5e2ab84b NIS |
4193 | } |
4194 | ||
4195 | void | |
f62ce20a | 4196 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4197 | { |
14a5cf38 JH |
4198 | if (cnt <= 0) { |
4199 | PerlIO_flush(f); | |
4200 | } | |
4201 | else { | |
f62ce20a | 4202 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4203 | } |
5e2ab84b NIS |
4204 | } |
4205 | ||
4206 | IV | |
2dc2558e | 4207 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4208 | { |
de009b76 | 4209 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4210 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4211 | /* |
71200d45 NIS |
4212 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4213 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4214 | */ |
4215 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4216 | (PerlIOBase(PerlIONext(f))-> | |
4217 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4218 | return code; | |
5e2ab84b NIS |
4219 | } |
4220 | ||
4221 | SSize_t | |
f62ce20a | 4222 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4223 | { |
14a5cf38 JH |
4224 | SSize_t avail = PerlIO_get_cnt(f); |
4225 | SSize_t got = 0; | |
eb160463 | 4226 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4227 | avail = count; |
4228 | if (avail > 0) | |
f62ce20a | 4229 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4230 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4231 | const SSize_t more = |
14a5cf38 JH |
4232 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4233 | if (more >= 0 || got == 0) | |
4234 | got += more; | |
4235 | } | |
4236 | return got; | |
5e2ab84b NIS |
4237 | } |
4238 | ||
27da23d5 | 4239 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4240 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4241 | "pending", |
4242 | sizeof(PerlIOBuf), | |
86e05cf2 | 4243 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4244 | PerlIOPending_pushed, |
44798d05 | 4245 | PerlIOBuf_popped, |
14a5cf38 | 4246 | NULL, |
86e05cf2 | 4247 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4248 | NULL, |
4249 | PerlIOBase_fileno, | |
71200d45 | 4250 | PerlIOBuf_dup, |
14a5cf38 JH |
4251 | PerlIOPending_read, |
4252 | PerlIOBuf_unread, | |
4253 | PerlIOBuf_write, | |
4254 | PerlIOPending_seek, | |
4255 | PerlIOBuf_tell, | |
4256 | PerlIOPending_close, | |
4257 | PerlIOPending_flush, | |
4258 | PerlIOPending_fill, | |
4259 | PerlIOBase_eof, | |
4260 | PerlIOBase_error, | |
4261 | PerlIOBase_clearerr, | |
4262 | PerlIOBase_setlinebuf, | |
4263 | PerlIOBuf_get_base, | |
4264 | PerlIOBuf_bufsiz, | |
4265 | PerlIOBuf_get_ptr, | |
4266 | PerlIOBuf_get_cnt, | |
4267 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4268 | }; |
4269 | ||
4270 | ||
4271 | ||
4272 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4273 | /* |
4274 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4275 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4276 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4277 | * |
4278 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4279 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4280 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4281 | * that it ends at c->nl; these two cases can be distinguished by | |
4282 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4283 | * _unread() and _flush() calls. | |
4284 | * It only matters for read operations. | |
66ecd56b NIS |
4285 | */ |
4286 | ||
14a5cf38 | 4287 | typedef struct { |
22569500 NIS |
4288 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4289 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4290 | * buffer */ |
99efab12 NIS |
4291 | } PerlIOCrlf; |
4292 | ||
ff1e3883 JD |
4293 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4294 | * Otherwise the :crlf layer would always revert back to | |
4295 | * raw mode. | |
4296 | */ | |
4297 | static void | |
4298 | S_inherit_utf8_flag(PerlIO *f) | |
4299 | { | |
4300 | PerlIO *g = PerlIONext(f); | |
4301 | if (PerlIOValid(g)) { | |
4302 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4303 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4304 | } | |
4305 | } | |
4306 | } | |
4307 | ||
f5b9d040 | 4308 | IV |
2dc2558e | 4309 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4310 | { |
14a5cf38 JH |
4311 | IV code; |
4312 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4313 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4314 | #if 0 |
14a5cf38 | 4315 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4316 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4317 | PerlIOBase(f)->flags); |
5e2ab84b | 4318 | #endif |
8229d19f JH |
4319 | { |
4320 | /* Enable the first CRLF capable layer you can find, but if none | |
4321 | * found, the one we just pushed is fine. This results in at | |
4322 | * any given moment at most one CRLF-capable layer being enabled | |
4323 | * in the whole layer stack. */ | |
4324 | PerlIO *g = PerlIONext(f); | |
ff1e3883 | 4325 | while (PerlIOValid(g)) { |
8229d19f JH |
4326 | PerlIOl *b = PerlIOBase(g); |
4327 | if (b && b->tab == &PerlIO_crlf) { | |
4328 | if (!(b->flags & PERLIO_F_CRLF)) | |
4329 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4330 | S_inherit_utf8_flag(g); |
8229d19f JH |
4331 | PerlIO_pop(aTHX_ f); |
4332 | return code; | |
4333 | } | |
4334 | g = PerlIONext(g); | |
4335 | } | |
4336 | } | |
ff1e3883 | 4337 | S_inherit_utf8_flag(f); |
14a5cf38 | 4338 | return code; |
f5b9d040 NIS |
4339 | } |
4340 | ||
4341 | ||
99efab12 | 4342 | SSize_t |
f62ce20a | 4343 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4344 | { |
dcda55fc | 4345 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4346 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4347 | *(c->nl) = 0xd; |
4348 | c->nl = NULL; | |
4349 | } | |
4350 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4351 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4352 | else { |
4353 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4354 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4355 | SSize_t unread = 0; | |
4356 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4357 | PerlIO_flush(f); | |
4358 | if (!b->buf) | |
4359 | PerlIO_get_base(f); | |
4360 | if (b->buf) { | |
4361 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4362 | b->end = b->ptr = b->buf + b->bufsiz; | |
4363 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4364 | b->posn -= b->bufsiz; | |
4365 | } | |
4366 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4367 | const int ch = *--buf; |
14a5cf38 JH |
4368 | if (ch == '\n') { |
4369 | if (b->ptr - 2 >= b->buf) { | |
4370 | *--(b->ptr) = 0xa; | |
4371 | *--(b->ptr) = 0xd; | |
4372 | unread++; | |
4373 | count--; | |
4374 | } | |
4375 | else { | |
93c2c2ec IZ |
4376 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4377 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4378 | unread++; | |
4379 | count--; | |
14a5cf38 JH |
4380 | } |
4381 | } | |
4382 | else { | |
4383 | *--(b->ptr) = ch; | |
4384 | unread++; | |
4385 | count--; | |
4386 | } | |
4387 | } | |
4388 | } | |
4389 | return unread; | |
4390 | } | |
99efab12 NIS |
4391 | } |
4392 | ||
93c2c2ec | 4393 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4394 | SSize_t |
f62ce20a | 4395 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4396 | { |
dcda55fc | 4397 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4398 | if (!b->buf) |
4399 | PerlIO_get_base(f); | |
4400 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4401 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4402 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4403 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4404 | scan: |
4405 | while (nl < b->end && *nl != 0xd) | |
4406 | nl++; | |
4407 | if (nl < b->end && *nl == 0xd) { | |
4408 | test: | |
4409 | if (nl + 1 < b->end) { | |
4410 | if (nl[1] == 0xa) { | |
4411 | *nl = '\n'; | |
4412 | c->nl = nl; | |
4413 | } | |
4414 | else { | |
4415 | /* | |
71200d45 | 4416 | * Not CR,LF but just CR |
14a5cf38 JH |
4417 | */ |
4418 | nl++; | |
4419 | goto scan; | |
4420 | } | |
4421 | } | |
4422 | else { | |
4423 | /* | |
71200d45 | 4424 | * Blast - found CR as last char in buffer |
14a5cf38 | 4425 | */ |
e87a358a | 4426 | |
14a5cf38 JH |
4427 | if (b->ptr < nl) { |
4428 | /* | |
4429 | * They may not care, defer work as long as | |
71200d45 | 4430 | * possible |
14a5cf38 | 4431 | */ |
a0d1d361 | 4432 | c->nl = nl; |
14a5cf38 JH |
4433 | return (nl - b->ptr); |
4434 | } | |
4435 | else { | |
4436 | int code; | |
22569500 | 4437 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4438 | * flush() is concerned */ |
22569500 | 4439 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4440 | /* Note as we have moved buf up flush's |
4441 | posn += ptr-buf | |
4442 | will naturally make posn point at CR | |
4443 | */ | |
22569500 NIS |
4444 | b->bufsiz--; /* Buffer is thus smaller */ |
4445 | code = PerlIO_fill(f); /* Fetch some more */ | |
4446 | b->bufsiz++; /* Restore size for next time */ | |
4447 | b->buf--; /* Point at space */ | |
4448 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4449 | * off */ |
22569500 | 4450 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4451 | if (code == 0) |
22569500 | 4452 | goto test; /* fill() call worked */ |
14a5cf38 | 4453 | /* |
71200d45 | 4454 | * CR at EOF - just fall through |
14a5cf38 | 4455 | */ |
a0d1d361 | 4456 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4457 | } |
4458 | } | |
4459 | } | |
4460 | } | |
4461 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4462 | } | |
4463 | return 0; | |
99efab12 NIS |
4464 | } |
4465 | ||
4466 | void | |
f62ce20a | 4467 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4468 | { |
dcda55fc AL |
4469 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4470 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4471 | if (!b->buf) |
4472 | PerlIO_get_base(f); | |
4473 | if (!ptr) { | |
a0d1d361 | 4474 | if (c->nl) { |
14a5cf38 | 4475 | ptr = c->nl + 1; |
22569500 | 4476 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4477 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4478 | ptr--; |
4479 | } | |
4480 | } | |
14a5cf38 JH |
4481 | else { |
4482 | ptr = b->end; | |
14a5cf38 JH |
4483 | } |
4484 | ptr -= cnt; | |
4485 | } | |
4486 | else { | |
6f207bd3 | 4487 | NOOP; |
3b4bd3fd | 4488 | #if 0 |
14a5cf38 | 4489 | /* |
71200d45 | 4490 | * Test code - delete when it works ... |
14a5cf38 | 4491 | */ |
3b4bd3fd | 4492 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4493 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4494 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4495 | /* Defered CR at end of buffer case - we lied about count */ |
4496 | chk--; | |
22569500 | 4497 | } |
14a5cf38 JH |
4498 | chk -= cnt; |
4499 | ||
a0d1d361 | 4500 | if (ptr != chk ) { |
99ef548b | 4501 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4502 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4503 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4504 | } |
99ef548b | 4505 | #endif |
14a5cf38 JH |
4506 | } |
4507 | if (c->nl) { | |
4508 | if (ptr > c->nl) { | |
4509 | /* | |
71200d45 | 4510 | * They have taken what we lied about |
14a5cf38 JH |
4511 | */ |
4512 | *(c->nl) = 0xd; | |
4513 | c->nl = NULL; | |
4514 | ptr++; | |
4515 | } | |
4516 | } | |
4517 | b->ptr = ptr; | |
4518 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4519 | } |
4520 | ||
4521 | SSize_t | |
f62ce20a | 4522 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4523 | { |
14a5cf38 | 4524 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4525 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4526 | else { |
dcda55fc | 4527 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4528 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4529 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4530 | if (!b->buf) |
4531 | PerlIO_get_base(f); | |
4532 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4533 | return 0; | |
4534 | while (buf < ebuf) { | |
dcda55fc | 4535 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4536 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4537 | while (buf < ebuf && b->ptr < eptr) { | |
4538 | if (*buf == '\n') { | |
4539 | if ((b->ptr + 2) > eptr) { | |
4540 | /* | |
71200d45 | 4541 | * Not room for both |
14a5cf38 JH |
4542 | */ |
4543 | PerlIO_flush(f); | |
4544 | break; | |
4545 | } | |
4546 | else { | |
22569500 NIS |
4547 | *(b->ptr)++ = 0xd; /* CR */ |
4548 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4549 | buf++; |
4550 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4551 | PerlIO_flush(f); | |
4552 | break; | |
4553 | } | |
4554 | } | |
4555 | } | |
4556 | else { | |
dcda55fc | 4557 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4558 | } |
4559 | if (b->ptr >= eptr) { | |
4560 | PerlIO_flush(f); | |
4561 | break; | |
4562 | } | |
4563 | } | |
4564 | } | |
4565 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4566 | PerlIO_flush(f); | |
4567 | return (buf - (STDCHAR *) vbuf); | |
4568 | } | |
99efab12 NIS |
4569 | } |
4570 | ||
4571 | IV | |
f62ce20a | 4572 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4573 | { |
dcda55fc | 4574 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4575 | if (c->nl) { |
4576 | *(c->nl) = 0xd; | |
4577 | c->nl = NULL; | |
4578 | } | |
f62ce20a | 4579 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4580 | } |
4581 | ||
86e05cf2 NIS |
4582 | IV |
4583 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4584 | { | |
4585 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4586 | /* In text mode - flush any pending stuff and flip it */ | |
4587 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4588 | #ifndef PERLIO_USING_CRLF | |
4589 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
4590 | if (PerlIOBase(f)->tab == &PerlIO_crlf) { | |
4591 | PerlIO_pop(aTHX_ f); | |
4592 | } | |
4593 | #endif | |
4594 | } | |
4595 | return 0; | |
4596 | } | |
4597 | ||
27da23d5 | 4598 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4599 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4600 | "crlf", |
4601 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4602 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4603 | PerlIOCrlf_pushed, |
44798d05 | 4604 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4605 | PerlIOBuf_open, |
86e05cf2 | 4606 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4607 | NULL, |
4608 | PerlIOBase_fileno, | |
71200d45 | 4609 | PerlIOBuf_dup, |
de009b76 | 4610 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4611 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4612 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4613 | PerlIOBuf_seek, |
4614 | PerlIOBuf_tell, | |
4615 | PerlIOBuf_close, | |
4616 | PerlIOCrlf_flush, | |
4617 | PerlIOBuf_fill, | |
4618 | PerlIOBase_eof, | |
4619 | PerlIOBase_error, | |
4620 | PerlIOBase_clearerr, | |
4621 | PerlIOBase_setlinebuf, | |
4622 | PerlIOBuf_get_base, | |
4623 | PerlIOBuf_bufsiz, | |
4624 | PerlIOBuf_get_ptr, | |
4625 | PerlIOCrlf_get_cnt, | |
4626 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4627 | }; |
4628 | ||
06da4f11 NIS |
4629 | #ifdef HAS_MMAP |
4630 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4631 | /* |
71200d45 | 4632 | * mmap as "buffer" layer |
14a5cf38 | 4633 | */ |
06da4f11 | 4634 | |
14a5cf38 | 4635 | typedef struct { |
22569500 NIS |
4636 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4637 | Mmap_t mptr; /* Mapped address */ | |
4638 | Size_t len; /* mapped length */ | |
4639 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4640 | } PerlIOMmap; |
4641 | ||
4642 | IV | |
f62ce20a | 4643 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4644 | { |
27da23d5 | 4645 | dVAR; |
de009b76 AL |
4646 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4647 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4648 | IV code = 0; |
4649 | if (m->len) | |
4650 | abort(); | |
4651 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4652 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4653 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4654 | Stat_t st; |
4655 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4656 | if (code == 0 && S_ISREG(st.st_mode)) { |
4657 | SSize_t len = st.st_size - b->posn; | |
4658 | if (len > 0) { | |
4659 | Off_t posn; | |
27da23d5 JH |
4660 | if (PL_mmap_page_size <= 0) |
4661 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4662 | PL_mmap_page_size); | |
14a5cf38 JH |
4663 | if (b->posn < 0) { |
4664 | /* | |
4665 | * This is a hack - should never happen - open should | |
71200d45 | 4666 | * have set it ! |
14a5cf38 JH |
4667 | */ |
4668 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4669 | } | |
27da23d5 | 4670 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 | 4671 | len = st.st_size - posn; |
b91fbb93 | 4672 | m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
14a5cf38 | 4673 | if (m->mptr && m->mptr != (Mmap_t) - 1) { |
a5262162 | 4674 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4675 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4676 | #endif |
a5262162 | 4677 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4678 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4679 | #endif |
14a5cf38 JH |
4680 | PerlIOBase(f)->flags = |
4681 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4682 | b->end = ((STDCHAR *) m->mptr) + len; | |
4683 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4684 | b->ptr = b->buf; | |
4685 | m->len = len; | |
4686 | } | |
4687 | else { | |
4688 | b->buf = NULL; | |
4689 | } | |
4690 | } | |
4691 | else { | |
4692 | PerlIOBase(f)->flags = | |
4693 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4694 | b->buf = NULL; | |
4695 | b->ptr = b->end = b->ptr; | |
4696 | code = -1; | |
4697 | } | |
4698 | } | |
4699 | } | |
4700 | return code; | |
06da4f11 NIS |
4701 | } |
4702 | ||
4703 | IV | |
e87a358a | 4704 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4705 | { |
dcda55fc | 4706 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4707 | IV code = 0; |
4708 | if (m->len) { | |
dcda55fc | 4709 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4710 | if (b->buf) { |
1ccb7c8d JH |
4711 | /* The munmap address argument is tricky: depending on the |
4712 | * standard it is either "void *" or "caddr_t" (which is | |
4713 | * usually "char *" (signed or unsigned). If we cast it | |
4714 | * to "void *", those that have it caddr_t and an uptight | |
4715 | * C++ compiler, will freak out. But casting it as char* | |
4716 | * should work. Maybe. (Using Mmap_t figured out by | |
4717 | * Configure doesn't always work, apparently.) */ | |
4718 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4719 | b->buf = NULL; |
4720 | m->len = 0; | |
4721 | m->mptr = NULL; | |
4722 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4723 | code = -1; | |
4724 | } | |
4725 | b->ptr = b->end = b->buf; | |
4726 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4727 | } | |
4728 | return code; | |
06da4f11 NIS |
4729 | } |
4730 | ||
4731 | STDCHAR * | |
f62ce20a | 4732 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4733 | { |
dcda55fc AL |
4734 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4735 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4736 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4737 | /* | |
71200d45 | 4738 | * Already have a readbuffer in progress |
14a5cf38 JH |
4739 | */ |
4740 | return b->buf; | |
4741 | } | |
4742 | if (b->buf) { | |
4743 | /* | |
71200d45 | 4744 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4745 | */ |
22569500 NIS |
4746 | m->bbuf = b->buf; /* save it in case we need it again */ |
4747 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4748 | } |
4749 | if (!b->buf) { | |
22569500 | 4750 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4751 | if (!b->buf) { |
4752 | /* | |
71200d45 | 4753 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4754 | */ |
4755 | b->buf = m->bbuf; | |
4756 | } | |
4757 | } | |
4758 | b->ptr = b->end = b->buf; | |
4759 | if (b->buf) | |
4760 | return b->buf; | |
f62ce20a | 4761 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4762 | } |
4763 | ||
4764 | SSize_t | |
f62ce20a | 4765 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4766 | { |
dcda55fc AL |
4767 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4768 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4769 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4770 | PerlIO_flush(f); | |
4771 | if (b->ptr && (b->ptr - count) >= b->buf | |
4772 | && memEQ(b->ptr - count, vbuf, count)) { | |
4773 | b->ptr -= count; | |
4774 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4775 | return count; | |
4776 | } | |
4777 | if (m->len) { | |
4778 | /* | |
71200d45 | 4779 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4780 | */ |
4781 | PerlIO_flush(f); | |
4782 | /* | |
71200d45 | 4783 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4784 | */ |
4785 | if (!b->buf && m->bbuf) | |
4786 | b->buf = m->bbuf; | |
4787 | if (!b->buf) { | |
f62ce20a | 4788 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4789 | m->bbuf = b->buf; |
4790 | } | |
4791 | } | |
f62ce20a | 4792 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4793 | } |
4794 | ||
4795 | SSize_t | |
f62ce20a | 4796 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4797 | { |
de009b76 AL |
4798 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4799 | PerlIOBuf * const b = &m->base; | |
4800 | ||
14a5cf38 JH |
4801 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4802 | /* | |
71200d45 | 4803 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4804 | */ |
4805 | if (m->len) { | |
e87a358a | 4806 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4807 | return 0; |
4808 | } | |
4809 | /* | |
71200d45 | 4810 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4811 | */ |
4812 | if (!b->buf && m->bbuf) | |
4813 | b->buf = m->bbuf; | |
4814 | if (!b->buf) { | |
f62ce20a | 4815 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4816 | m->bbuf = b->buf; |
4817 | } | |
06da4f11 | 4818 | } |
f62ce20a | 4819 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4820 | } |
4821 | ||
4822 | IV | |
f62ce20a | 4823 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4824 | { |
dcda55fc AL |
4825 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4826 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4827 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4828 | /* |
71200d45 | 4829 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4830 | */ |
4831 | if (b->buf) { | |
4832 | if (m->len) { | |
4833 | /* | |
71200d45 | 4834 | * Unmap the buffer |
14a5cf38 | 4835 | */ |
e87a358a | 4836 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4837 | code = -1; |
4838 | } | |
4839 | else { | |
4840 | /* | |
4841 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4842 | * remember it in case we need one later |
14a5cf38 JH |
4843 | */ |
4844 | m->bbuf = b->buf; | |
4845 | } | |
4846 | } | |
4847 | return code; | |
06da4f11 NIS |
4848 | } |
4849 | ||
4850 | IV | |
f62ce20a | 4851 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4852 | { |
dcda55fc | 4853 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4854 | IV code = PerlIO_flush(f); |
4855 | if (code == 0 && !b->buf) { | |
f62ce20a | 4856 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4857 | } |
4858 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4859 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4860 | } |
4861 | return code; | |
06da4f11 NIS |
4862 | } |
4863 | ||
4864 | IV | |
f62ce20a | 4865 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4866 | { |
dcda55fc AL |
4867 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4868 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4869 | IV code = PerlIO_flush(f); |
4870 | if (m->bbuf) { | |
4871 | b->buf = m->bbuf; | |
4872 | m->bbuf = NULL; | |
4873 | b->ptr = b->end = b->buf; | |
4874 | } | |
f62ce20a | 4875 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4876 | code = -1; |
4877 | return code; | |
06da4f11 NIS |
4878 | } |
4879 | ||
71200d45 | 4880 | PerlIO * |
ecdeb87c | 4881 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4882 | { |
ecdeb87c | 4883 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4884 | } |
4885 | ||
06da4f11 | 4886 | |
27da23d5 | 4887 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4888 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4889 | "mmap", |
4890 | sizeof(PerlIOMmap), | |
86e05cf2 | 4891 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4892 | PerlIOBuf_pushed, |
44798d05 | 4893 | PerlIOBuf_popped, |
14a5cf38 | 4894 | PerlIOBuf_open, |
86e05cf2 | 4895 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4896 | NULL, |
4897 | PerlIOBase_fileno, | |
71200d45 | 4898 | PerlIOMmap_dup, |
14a5cf38 JH |
4899 | PerlIOBuf_read, |
4900 | PerlIOMmap_unread, | |
4901 | PerlIOMmap_write, | |
4902 | PerlIOBuf_seek, | |
4903 | PerlIOBuf_tell, | |
4904 | PerlIOBuf_close, | |
4905 | PerlIOMmap_flush, | |
4906 | PerlIOMmap_fill, | |
4907 | PerlIOBase_eof, | |
4908 | PerlIOBase_error, | |
4909 | PerlIOBase_clearerr, | |
4910 | PerlIOBase_setlinebuf, | |
4911 | PerlIOMmap_get_base, | |
4912 | PerlIOBuf_bufsiz, | |
4913 | PerlIOBuf_get_ptr, | |
4914 | PerlIOBuf_get_cnt, | |
4915 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4916 | }; |
4917 | ||
22569500 | 4918 | #endif /* HAS_MMAP */ |
06da4f11 | 4919 | |
9e353e3b | 4920 | PerlIO * |
e87a358a | 4921 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4922 | { |
97aff369 | 4923 | dVAR; |
a1ea730d | 4924 | if (!PL_perlio) { |
14a5cf38 JH |
4925 | PerlIO_stdstreams(aTHX); |
4926 | } | |
a1ea730d | 4927 | return &PL_perlio[1]; |
9e353e3b NIS |
4928 | } |
4929 | ||
9e353e3b | 4930 | PerlIO * |
e87a358a | 4931 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4932 | { |
97aff369 | 4933 | dVAR; |
a1ea730d | 4934 | if (!PL_perlio) { |
14a5cf38 JH |
4935 | PerlIO_stdstreams(aTHX); |
4936 | } | |
a1ea730d | 4937 | return &PL_perlio[2]; |
9e353e3b NIS |
4938 | } |
4939 | ||
9e353e3b | 4940 | PerlIO * |
e87a358a | 4941 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4942 | { |
97aff369 | 4943 | dVAR; |
a1ea730d | 4944 | if (!PL_perlio) { |
14a5cf38 JH |
4945 | PerlIO_stdstreams(aTHX); |
4946 | } | |
a1ea730d | 4947 | return &PL_perlio[3]; |
9e353e3b NIS |
4948 | } |
4949 | ||
4950 | /*--------------------------------------------------------------------------------------*/ | |
4951 | ||
9e353e3b NIS |
4952 | char * |
4953 | PerlIO_getname(PerlIO *f, char *buf) | |
4954 | { | |
14a5cf38 | 4955 | dTHX; |
a15cef0c | 4956 | #ifdef VMS |
73d840c0 | 4957 | char *name = NULL; |
7659f319 | 4958 | bool exported = FALSE; |
14a5cf38 | 4959 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4960 | if (!stdio) { |
4961 | stdio = PerlIO_exportFILE(f,0); | |
4962 | exported = TRUE; | |
4963 | } | |
4964 | if (stdio) { | |
14a5cf38 | 4965 | name = fgetname(stdio, buf); |
7659f319 CB |
4966 | if (exported) PerlIO_releaseFILE(f,stdio); |
4967 | } | |
73d840c0 | 4968 | return name; |
a15cef0c | 4969 | #else |
8772537c AL |
4970 | PERL_UNUSED_ARG(f); |
4971 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 4972 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 4973 | return NULL; |
a15cef0c | 4974 | #endif |
9e353e3b NIS |
4975 | } |
4976 | ||
4977 | ||
4978 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4979 | /* |
4980 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4981 | * terms of above |
14a5cf38 | 4982 | */ |
9e353e3b | 4983 | |
e87a358a NIS |
4984 | #undef PerlIO_fdopen |
4985 | PerlIO * | |
4986 | PerlIO_fdopen(int fd, const char *mode) | |
4987 | { | |
4988 | dTHX; | |
bd61b366 | 4989 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4990 | } |
4991 | ||
4992 | #undef PerlIO_open | |
4993 | PerlIO * | |
4994 | PerlIO_open(const char *path, const char *mode) | |
4995 | { | |
4996 | dTHX; | |
42d9b98d | 4997 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4998 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4999 | } |
5000 | ||
5001 | #undef Perlio_reopen | |
5002 | PerlIO * | |
5003 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
5004 | { | |
5005 | dTHX; | |
42d9b98d | 5006 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 5007 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
5008 | } |
5009 | ||
9e353e3b | 5010 | #undef PerlIO_getc |
6f9d8c32 | 5011 | int |
9e353e3b | 5012 | PerlIO_getc(PerlIO *f) |
760ac839 | 5013 | { |
e87a358a | 5014 | dTHX; |
14a5cf38 | 5015 | STDCHAR buf[1]; |
de009b76 | 5016 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
5017 | return (unsigned char) buf[0]; |
5018 | } | |
5019 | return EOF; | |
313ca112 NIS |
5020 | } |
5021 | ||
5022 | #undef PerlIO_ungetc | |
5023 | int | |
5024 | PerlIO_ungetc(PerlIO *f, int ch) | |
5025 | { | |
e87a358a | 5026 | dTHX; |
14a5cf38 JH |
5027 | if (ch != EOF) { |
5028 | STDCHAR buf = ch; | |
5029 | if (PerlIO_unread(f, &buf, 1) == 1) | |
5030 | return ch; | |
5031 | } | |
5032 | return EOF; | |
760ac839 LW |
5033 | } |
5034 | ||
9e353e3b NIS |
5035 | #undef PerlIO_putc |
5036 | int | |
5037 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 5038 | { |
e87a358a | 5039 | dTHX; |
14a5cf38 JH |
5040 | STDCHAR buf = ch; |
5041 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5042 | } |
5043 | ||
9e353e3b | 5044 | #undef PerlIO_puts |
760ac839 | 5045 | int |
9e353e3b | 5046 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5047 | { |
e87a358a | 5048 | dTHX; |
dcda55fc | 5049 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5050 | } |
5051 | ||
5052 | #undef PerlIO_rewind | |
5053 | void | |
c78749f2 | 5054 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5055 | { |
e87a358a | 5056 | dTHX; |
14a5cf38 JH |
5057 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5058 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5059 | } |
5060 | ||
5061 | #undef PerlIO_vprintf | |
5062 | int | |
5063 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5064 | { | |
14a5cf38 | 5065 | dTHX; |
53ce71d3 | 5066 | SV * sv; |
b83604b4 | 5067 | const char *s; |
14a5cf38 JH |
5068 | STRLEN len; |
5069 | SSize_t wrote; | |
2cc61e15 | 5070 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5071 | va_list apc; |
5072 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5073 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 5074 | #else |
53ce71d3 | 5075 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5076 | #endif |
b83604b4 | 5077 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5078 | wrote = PerlIO_write(f, s, len); |
5079 | SvREFCNT_dec(sv); | |
5080 | return wrote; | |
760ac839 LW |
5081 | } |
5082 | ||
5083 | #undef PerlIO_printf | |
6f9d8c32 | 5084 | int |
14a5cf38 | 5085 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5086 | { |
14a5cf38 JH |
5087 | va_list ap; |
5088 | int result; | |
5089 | va_start(ap, fmt); | |
5090 | result = PerlIO_vprintf(f, fmt, ap); | |
5091 | va_end(ap); | |
5092 | return result; | |
760ac839 LW |
5093 | } |
5094 | ||
5095 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5096 | int |
14a5cf38 | 5097 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5098 | { |
e87a358a | 5099 | dTHX; |
14a5cf38 JH |
5100 | va_list ap; |
5101 | int result; | |
5102 | va_start(ap, fmt); | |
5103 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5104 | va_end(ap); | |
5105 | return result; | |
760ac839 LW |
5106 | } |
5107 | ||
5108 | #undef PerlIO_tmpfile | |
5109 | PerlIO * | |
c78749f2 | 5110 | PerlIO_tmpfile(void) |
760ac839 | 5111 | { |
2941a2e1 JH |
5112 | dTHX; |
5113 | PerlIO *f = NULL; | |
2941a2e1 | 5114 | #ifdef WIN32 |
de009b76 | 5115 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5116 | if (fd >= 0) |
5117 | f = PerlIO_fdopen(fd, "w+b"); | |
5118 | #else /* WIN32 */ | |
460c8493 | 5119 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
396482e1 | 5120 | SV * const sv = newSVpvs("/tmp/PerlIO_XXXXXX"); |
2941a2e1 JH |
5121 | /* |
5122 | * I have no idea how portable mkstemp() is ... NI-S | |
5123 | */ | |
de009b76 | 5124 | const int fd = mkstemp(SvPVX(sv)); |
2941a2e1 JH |
5125 | if (fd >= 0) { |
5126 | f = PerlIO_fdopen(fd, "w+"); | |
5127 | if (f) | |
5128 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
b15aece3 | 5129 | PerlLIO_unlink(SvPVX_const(sv)); |
2941a2e1 | 5130 | } |
b2166d27 | 5131 | SvREFCNT_dec(sv); |
2941a2e1 | 5132 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5133 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5134 | |
085e731f CB |
5135 | if (stdio) |
5136 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5137 | ||
2941a2e1 JH |
5138 | # endif /* else HAS_MKSTEMP */ |
5139 | #endif /* else WIN32 */ | |
5140 | return f; | |
760ac839 LW |
5141 | } |
5142 | ||
6f9d8c32 NIS |
5143 | #undef HAS_FSETPOS |
5144 | #undef HAS_FGETPOS | |
5145 | ||
22569500 NIS |
5146 | #endif /* USE_SFIO */ |
5147 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5148 | |
9e353e3b | 5149 | /*======================================================================================*/ |
14a5cf38 | 5150 | /* |
71200d45 NIS |
5151 | * Now some functions in terms of above which may be needed even if we are |
5152 | * not in true PerlIO mode | |
9e353e3b | 5153 | */ |
188f0c84 YO |
5154 | const char * |
5155 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5156 | { | |
5157 | dVAR; | |
8b850bd5 NC |
5158 | const char *direction = NULL; |
5159 | SV *layers; | |
188f0c84 YO |
5160 | /* |
5161 | * Need to supply default layer info from open.pm | |
5162 | */ | |
8b850bd5 NC |
5163 | |
5164 | if (!PL_curcop) | |
5165 | return NULL; | |
5166 | ||
5167 | if (mode && mode[0] != 'r') { | |
5168 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5169 | direction = "open>"; | |
5170 | } else { | |
5171 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5172 | direction = "open<"; | |
188f0c84 | 5173 | } |
8b850bd5 NC |
5174 | if (!direction) |
5175 | return NULL; | |
5176 | ||
5177 | layers = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, | |
5178 | 0, direction, 5, 0, 0); | |
5179 | ||
5180 | assert(layers); | |
5181 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5182 | } |
5183 | ||
9e353e3b | 5184 | |
760ac839 LW |
5185 | #ifndef HAS_FSETPOS |
5186 | #undef PerlIO_setpos | |
5187 | int | |
766a733e | 5188 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5189 | { |
14a5cf38 JH |
5190 | dTHX; |
5191 | if (SvOK(pos)) { | |
5192 | STRLEN len; | |
c4420975 | 5193 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5194 | if (f && len == sizeof(Off_t)) |
5195 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5196 | } | |
93189314 | 5197 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5198 | return -1; |
760ac839 | 5199 | } |
c411622e | 5200 | #else |
c411622e | 5201 | #undef PerlIO_setpos |
5202 | int | |
766a733e | 5203 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5204 | { |
14a5cf38 JH |
5205 | dTHX; |
5206 | if (SvOK(pos)) { | |
5207 | STRLEN len; | |
c4420975 | 5208 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5209 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5210 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5211 | return fsetpos64(f, fpos); |
d9b3e12d | 5212 | #else |
14a5cf38 | 5213 | return fsetpos(f, fpos); |
d9b3e12d | 5214 | #endif |
14a5cf38 | 5215 | } |
766a733e | 5216 | } |
93189314 | 5217 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5218 | return -1; |
c411622e | 5219 | } |
5220 | #endif | |
760ac839 LW |
5221 | |
5222 | #ifndef HAS_FGETPOS | |
5223 | #undef PerlIO_getpos | |
5224 | int | |
766a733e | 5225 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5226 | { |
14a5cf38 JH |
5227 | dTHX; |
5228 | Off_t posn = PerlIO_tell(f); | |
5229 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5230 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5231 | } |
c411622e | 5232 | #else |
c411622e | 5233 | #undef PerlIO_getpos |
5234 | int | |
766a733e | 5235 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5236 | { |
14a5cf38 JH |
5237 | dTHX; |
5238 | Fpos_t fpos; | |
5239 | int code; | |
2d4389e4 | 5240 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5241 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5242 | #else |
14a5cf38 | 5243 | code = fgetpos(f, &fpos); |
d9b3e12d | 5244 | #endif |
14a5cf38 JH |
5245 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5246 | return code; | |
c411622e | 5247 | } |
5248 | #endif | |
760ac839 LW |
5249 | |
5250 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5251 | ||
5252 | int | |
c78749f2 | 5253 | vprintf(char *pat, char *args) |
662a7e3f CS |
5254 | { |
5255 | _doprnt(pat, args, stdout); | |
22569500 | 5256 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5257 | * value */ |
662a7e3f CS |
5258 | } |
5259 | ||
5260 | int | |
c78749f2 | 5261 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5262 | { |
5263 | _doprnt(pat, args, fd); | |
22569500 | 5264 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5265 | * value */ |
760ac839 LW |
5266 | } |
5267 | ||
5268 | #endif | |
5269 | ||
5270 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5271 | int |
8ac85365 | 5272 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5273 | { |
8ff9a42b | 5274 | dTHX; |
d9fad198 | 5275 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5276 | PERL_UNUSED_CONTEXT; |
5277 | ||
1208b3dd JH |
5278 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5279 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5280 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5281 | } |
1208b3dd | 5282 | #endif |
14a5cf38 | 5283 | return val; |
760ac839 LW |
5284 | } |
5285 | #endif | |
5286 | ||
5287 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5288 | int |
14a5cf38 | 5289 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5290 | { |
14a5cf38 JH |
5291 | va_list ap; |
5292 | int result; | |
5293 | va_start(ap, fmt); | |
5294 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5295 | va_end(ap); | |
5296 | return result; | |
760ac839 LW |
5297 | } |
5298 | #endif | |
9cfa90c0 NC |
5299 | |
5300 | /* | |
5301 | * Local variables: | |
5302 | * c-indentation-style: bsd | |
5303 | * c-basic-offset: 4 | |
5304 | * indent-tabs-mode: t | |
5305 | * End: | |
5306 | * | |
37442d52 RGS |
5307 | * ex: set ts=8 sts=4 sw=4 noet: |
5308 | */ |