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; | |
396482e1 | 510 | SV * const sv = newSVpvs(""); |
dcda55fc | 511 | Perl_sv_catpvf(aTHX_ sv, "%s:%" IVdf " ", s ? s : "(none)", |
14a5cf38 JH |
512 | (IV) CopLINE(PL_curcop)); |
513 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); | |
514 | ||
b83604b4 | 515 | s = SvPV_const(sv, len); |
27da23d5 | 516 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 517 | SvREFCNT_dec(sv); |
70ace5da | 518 | #endif |
14a5cf38 JH |
519 | } |
520 | va_end(ap); | |
6f9d8c32 NIS |
521 | } |
522 | ||
9e353e3b NIS |
523 | /*--------------------------------------------------------------------------------------*/ |
524 | ||
14a5cf38 | 525 | /* |
71200d45 | 526 | * Inner level routines |
14a5cf38 | 527 | */ |
9e353e3b | 528 | |
14a5cf38 | 529 | /* |
71200d45 | 530 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 531 | */ |
05d1247b | 532 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 533 | |
760ac839 | 534 | PerlIO * |
5f1a76d0 | 535 | PerlIO_allocate(pTHX) |
6f9d8c32 | 536 | { |
97aff369 | 537 | dVAR; |
14a5cf38 | 538 | /* |
71200d45 | 539 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 JH |
540 | */ |
541 | PerlIO **last; | |
542 | PerlIO *f; | |
a1ea730d | 543 | last = &PL_perlio; |
14a5cf38 JH |
544 | while ((f = *last)) { |
545 | int i; | |
546 | last = (PerlIO **) (f); | |
547 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
548 | if (!*++f) { | |
549 | return f; | |
550 | } | |
551 | } | |
552 | } | |
a02a5408 | 553 | Newxz(f,PERLIO_TABLE_SIZE,PerlIO); |
14a5cf38 JH |
554 | if (!f) { |
555 | return NULL; | |
556 | } | |
557 | *last = f; | |
558 | return f + 1; | |
05d1247b NIS |
559 | } |
560 | ||
a1ea730d NIS |
561 | #undef PerlIO_fdupopen |
562 | PerlIO * | |
ecdeb87c | 563 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 564 | { |
04892f78 | 565 | if (PerlIOValid(f)) { |
de009b76 | 566 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 567 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
568 | if (tab && tab->Dup) |
569 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
570 | else { |
571 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
572 | } | |
a1ea730d | 573 | } |
210e727c JH |
574 | else |
575 | SETERRNO(EBADF, SS_IVCHAN); | |
576 | ||
577 | return NULL; | |
a1ea730d NIS |
578 | } |
579 | ||
580 | void | |
5f1a76d0 | 581 | PerlIO_cleantable(pTHX_ PerlIO **tablep) |
05d1247b | 582 | { |
dcda55fc | 583 | PerlIO * const table = *tablep; |
14a5cf38 JH |
584 | if (table) { |
585 | int i; | |
586 | PerlIO_cleantable(aTHX_(PerlIO **) & (table[0])); | |
587 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { | |
dcda55fc | 588 | PerlIO * const f = table + i; |
14a5cf38 JH |
589 | if (*f) { |
590 | PerlIO_close(f); | |
591 | } | |
592 | } | |
3a1ee7e8 | 593 | Safefree(table); |
14a5cf38 | 594 | *tablep = NULL; |
05d1247b | 595 | } |
05d1247b NIS |
596 | } |
597 | ||
fcf2db38 NIS |
598 | |
599 | PerlIO_list_t * | |
3a1ee7e8 | 600 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 601 | { |
14a5cf38 | 602 | PerlIO_list_t *list; |
96a5add6 | 603 | PERL_UNUSED_CONTEXT; |
a02a5408 | 604 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
605 | list->refcnt = 1; |
606 | return list; | |
fcf2db38 NIS |
607 | } |
608 | ||
609 | void | |
3a1ee7e8 | 610 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 611 | { |
14a5cf38 JH |
612 | if (list) { |
613 | if (--list->refcnt == 0) { | |
614 | if (list->array) { | |
14a5cf38 JH |
615 | IV i; |
616 | for (i = 0; i < list->cur; i++) { | |
617 | if (list->array[i].arg) | |
618 | SvREFCNT_dec(list->array[i].arg); | |
619 | } | |
620 | Safefree(list->array); | |
621 | } | |
622 | Safefree(list); | |
623 | } | |
624 | } | |
fcf2db38 NIS |
625 | } |
626 | ||
627 | void | |
3a1ee7e8 | 628 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 629 | { |
97aff369 | 630 | dVAR; |
334e202e | 631 | PerlIO_pair_t *p; |
b37c2d43 AL |
632 | PERL_UNUSED_CONTEXT; |
633 | ||
14a5cf38 JH |
634 | if (list->cur >= list->len) { |
635 | list->len += 8; | |
636 | if (list->array) | |
637 | Renew(list->array, list->len, PerlIO_pair_t); | |
638 | else | |
a02a5408 | 639 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
640 | } |
641 | p = &(list->array[list->cur++]); | |
642 | p->funcs = funcs; | |
643 | if ((p->arg = arg)) { | |
f84c484e | 644 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 645 | } |
fcf2db38 NIS |
646 | } |
647 | ||
3a1ee7e8 NIS |
648 | PerlIO_list_t * |
649 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
650 | { | |
b37c2d43 | 651 | PerlIO_list_t *list = NULL; |
694c95cf JH |
652 | if (proto) { |
653 | int i; | |
654 | list = PerlIO_list_alloc(aTHX); | |
655 | for (i=0; i < proto->cur; i++) { | |
a951d81d BL |
656 | SV *arg = proto->array[i].arg; |
657 | #ifdef sv_dup | |
658 | if (arg && param) | |
659 | arg = sv_dup(arg, param); | |
660 | #else | |
661 | PERL_UNUSED_ARG(param); | |
662 | #endif | |
694c95cf JH |
663 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
664 | } | |
3a1ee7e8 NIS |
665 | } |
666 | return list; | |
667 | } | |
4a4a6116 | 668 | |
05d1247b | 669 | void |
3a1ee7e8 | 670 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 671 | { |
3aaf42a7 | 672 | #ifdef USE_ITHREADS |
3a1ee7e8 NIS |
673 | PerlIO **table = &proto->Iperlio; |
674 | PerlIO *f; | |
675 | PL_perlio = NULL; | |
676 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
677 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
678 | PerlIO_allocate(aTHX); /* root slot is never used */ | |
a25429c6 | 679 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
680 | while ((f = *table)) { |
681 | int i; | |
682 | table = (PerlIO **) (f++); | |
683 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
684 | if (*f) { | |
93a8090d | 685 | (void) fp_dup(f, 0, param); |
3a1ee7e8 NIS |
686 | } |
687 | f++; | |
688 | } | |
689 | } | |
1b6737cc | 690 | #else |
a25429c6 | 691 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
692 | PERL_UNUSED_ARG(proto); |
693 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 694 | #endif |
9a6404c5 DM |
695 | } |
696 | ||
697 | void | |
13621cfb NIS |
698 | PerlIO_destruct(pTHX) |
699 | { | |
97aff369 | 700 | dVAR; |
a1ea730d | 701 | PerlIO **table = &PL_perlio; |
14a5cf38 | 702 | PerlIO *f; |
694c95cf | 703 | #ifdef USE_ITHREADS |
a25429c6 | 704 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 705 | #endif |
14a5cf38 JH |
706 | while ((f = *table)) { |
707 | int i; | |
708 | table = (PerlIO **) (f++); | |
709 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
710 | PerlIO *x = f; | |
dcda55fc | 711 | const PerlIOl *l; |
14a5cf38 JH |
712 | while ((l = *x)) { |
713 | if (l->tab->kind & PERLIO_K_DESTRUCT) { | |
714 | PerlIO_debug("Destruct popping %s\n", l->tab->name); | |
715 | PerlIO_flush(x); | |
716 | PerlIO_pop(aTHX_ x); | |
717 | } | |
718 | else { | |
719 | x = PerlIONext(x); | |
720 | } | |
721 | } | |
722 | f++; | |
723 | } | |
724 | } | |
13621cfb NIS |
725 | } |
726 | ||
727 | void | |
a999f61b | 728 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 729 | { |
dcda55fc | 730 | const PerlIOl *l = *f; |
14a5cf38 | 731 | if (l) { |
fe5a182c | 732 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, l->tab->name); |
14a5cf38 JH |
733 | if (l->tab->Popped) { |
734 | /* | |
735 | * If popped returns non-zero do not free its layer structure | |
736 | * it has either done so itself, or it is shared and still in | |
71200d45 | 737 | * use |
14a5cf38 | 738 | */ |
f62ce20a | 739 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
740 | return; |
741 | } | |
b47cad08 | 742 | *f = l->next; |
3a1ee7e8 | 743 | Safefree(l); |
a8c08ecd | 744 | } |
6f9d8c32 NIS |
745 | } |
746 | ||
39f7a870 JH |
747 | /* Return as an array the stack of layers on a filehandle. Note that |
748 | * the stack is returned top-first in the array, and there are three | |
749 | * times as many array elements as there are layers in the stack: the | |
750 | * first element of a layer triplet is the name, the second one is the | |
751 | * arguments, and the third one is the flags. */ | |
752 | ||
753 | AV * | |
754 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
755 | { | |
97aff369 | 756 | dVAR; |
dcda55fc | 757 | AV * const av = newAV(); |
39f7a870 | 758 | |
dcda55fc AL |
759 | if (PerlIOValid(f)) { |
760 | PerlIOl *l = PerlIOBase(f); | |
761 | ||
762 | while (l) { | |
763 | SV * const name = l->tab && l->tab->name ? | |
764 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
765 | SV * const arg = l->tab && l->tab->Getarg ? | |
766 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
767 | av_push(av, name); | |
768 | av_push(av, arg); | |
769 | av_push(av, newSViv((IV)l->flags)); | |
770 | l = l->next; | |
771 | } | |
772 | } | |
39f7a870 | 773 | |
dcda55fc | 774 | return av; |
39f7a870 JH |
775 | } |
776 | ||
9e353e3b | 777 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 778 | /* |
71200d45 | 779 | * XS Interface for perl code |
14a5cf38 | 780 | */ |
9e353e3b | 781 | |
fcf2db38 | 782 | PerlIO_funcs * |
2edd7e44 | 783 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 784 | { |
27da23d5 | 785 | dVAR; |
14a5cf38 JH |
786 | IV i; |
787 | if ((SSize_t) len <= 0) | |
788 | len = strlen(name); | |
3a1ee7e8 | 789 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 790 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 791 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 792 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
793 | return f; |
794 | } | |
795 | } | |
3a1ee7e8 NIS |
796 | if (load && PL_subname && PL_def_layerlist |
797 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
798 | if (PL_in_load_module) { |
799 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
800 | return NULL; | |
801 | } else { | |
396482e1 | 802 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 803 | SV * const layer = newSVpvn(name, len); |
780a5241 | 804 | CV * const cv = Perl_get_cvn_flags(aTHX_ STR_WITH_LEN("PerlIO::Layer::NoWarnings"), 0); |
46c461b5 | 805 | ENTER; |
d7a09b41 | 806 | SAVEINT(PL_in_load_module); |
c9bca74a | 807 | if (cv) { |
9cfa90c0 | 808 | SAVEGENERICSV(PL_warnhook); |
b37c2d43 | 809 | PL_warnhook = (SV *) (SvREFCNT_inc_simple_NN(cv)); |
c9bca74a | 810 | } |
d7a09b41 SR |
811 | PL_in_load_module++; |
812 | /* | |
813 | * The two SVs are magically freed by load_module | |
814 | */ | |
a0714e2c | 815 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
816 | PL_in_load_module--; |
817 | LEAVE; | |
818 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
819 | } | |
14a5cf38 JH |
820 | } |
821 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
822 | return NULL; | |
f3862f8b NIS |
823 | } |
824 | ||
2a1bc955 | 825 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
826 | |
827 | static int | |
828 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
829 | { | |
14a5cf38 | 830 | if (SvROK(sv)) { |
dcda55fc AL |
831 | IO * const io = GvIOn((GV *) SvRV(sv)); |
832 | PerlIO * const ifp = IoIFP(io); | |
833 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
834 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
835 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
836 | } |
837 | return 0; | |
b13b2135 NIS |
838 | } |
839 | ||
840 | static int | |
841 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
842 | { | |
14a5cf38 | 843 | if (SvROK(sv)) { |
dcda55fc AL |
844 | IO * const io = GvIOn((GV *) SvRV(sv)); |
845 | PerlIO * const ifp = IoIFP(io); | |
846 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
847 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
848 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
849 | } |
850 | return 0; | |
b13b2135 NIS |
851 | } |
852 | ||
853 | static int | |
854 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
855 | { | |
be2597df | 856 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 857 | return 0; |
b13b2135 NIS |
858 | } |
859 | ||
860 | static int | |
861 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
862 | { | |
be2597df | 863 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 864 | return 0; |
b13b2135 NIS |
865 | } |
866 | ||
867 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
868 | perlio_mg_get, |
869 | perlio_mg_set, | |
22569500 | 870 | NULL, /* len */ |
14a5cf38 JH |
871 | perlio_mg_clear, |
872 | perlio_mg_free | |
b13b2135 NIS |
873 | }; |
874 | ||
875 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
876 | { | |
14a5cf38 | 877 | dXSARGS; |
dcda55fc AL |
878 | SV * const sv = SvRV(ST(1)); |
879 | AV * const av = newAV(); | |
14a5cf38 JH |
880 | MAGIC *mg; |
881 | int count = 0; | |
882 | int i; | |
883 | sv_magic(sv, (SV *) av, PERL_MAGIC_ext, NULL, 0); | |
884 | SvRMAGICAL_off(sv); | |
885 | mg = mg_find(sv, PERL_MAGIC_ext); | |
886 | mg->mg_virtual = &perlio_vtab; | |
887 | mg_magical(sv); | |
be2597df | 888 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
889 | for (i = 2; i < items; i++) { |
890 | STRLEN len; | |
dcda55fc AL |
891 | const char * const name = SvPV_const(ST(i), len); |
892 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 893 | if (layer) { |
b37c2d43 | 894 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
895 | } |
896 | else { | |
897 | ST(count) = ST(i); | |
898 | count++; | |
899 | } | |
900 | } | |
901 | SvREFCNT_dec(av); | |
902 | XSRETURN(count); | |
903 | } | |
904 | ||
22569500 | 905 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 906 | |
e3f3bf95 NIS |
907 | SV * |
908 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 909 | { |
da51bb9b | 910 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 911 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 912 | return sv; |
e3f3bf95 NIS |
913 | } |
914 | ||
5ca1d77f | 915 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 916 | { |
37725cdc | 917 | /* This is used as a %SIG{__WARN__} handler to supress warnings |
c9bca74a NIS |
918 | during loading of layers. |
919 | */ | |
97aff369 | 920 | dVAR; |
c9bca74a | 921 | dXSARGS; |
58c0efa5 | 922 | PERL_UNUSED_ARG(cv); |
c9bca74a | 923 | if (items) |
e62f0680 | 924 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
925 | XSRETURN(0); |
926 | } | |
927 | ||
5ca1d77f | 928 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 929 | { |
97aff369 | 930 | dVAR; |
14a5cf38 | 931 | dXSARGS; |
58c0efa5 | 932 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
933 | if (items < 2) |
934 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
935 | else { | |
de009b76 | 936 | STRLEN len; |
46c461b5 | 937 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 938 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 939 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
940 | ST(0) = |
941 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
942 | &PL_sv_undef; | |
943 | XSRETURN(1); | |
944 | } | |
0c4f7ff0 NIS |
945 | } |
946 | ||
e3f3bf95 NIS |
947 | void |
948 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
949 | { | |
97aff369 | 950 | dVAR; |
3a1ee7e8 NIS |
951 | if (!PL_known_layers) |
952 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 953 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 954 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
955 | } |
956 | ||
1141d9f8 | 957 | int |
fcf2db38 | 958 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 959 | { |
97aff369 | 960 | dVAR; |
14a5cf38 JH |
961 | if (names) { |
962 | const char *s = names; | |
963 | while (*s) { | |
964 | while (isSPACE(*s) || *s == ':') | |
965 | s++; | |
966 | if (*s) { | |
967 | STRLEN llen = 0; | |
968 | const char *e = s; | |
bd61b366 | 969 | const char *as = NULL; |
14a5cf38 JH |
970 | STRLEN alen = 0; |
971 | if (!isIDFIRST(*s)) { | |
972 | /* | |
973 | * Message is consistent with how attribute lists are | |
974 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 975 | * seen as an invalid separator character. |
14a5cf38 | 976 | */ |
de009b76 | 977 | const char q = ((*s == '\'') ? '"' : '\''); |
99ef548b | 978 | if (ckWARN(WARN_LAYER)) |
22569500 | 979 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
b4581f09 | 980 | "Invalid separator character %c%c%c in PerlIO layer specification %s", |
1e616cf5 | 981 | q, *s, q, s); |
93189314 | 982 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
983 | return -1; |
984 | } | |
985 | do { | |
986 | e++; | |
987 | } while (isALNUM(*e)); | |
988 | llen = e - s; | |
989 | if (*e == '(') { | |
990 | int nesting = 1; | |
991 | as = ++e; | |
992 | while (nesting) { | |
993 | switch (*e++) { | |
994 | case ')': | |
995 | if (--nesting == 0) | |
996 | alen = (e - 1) - as; | |
997 | break; | |
998 | case '(': | |
999 | ++nesting; | |
1000 | break; | |
1001 | case '\\': | |
1002 | /* | |
1003 | * It's a nul terminated string, not allowed | |
1004 | * to \ the terminating null. Anything other | |
71200d45 | 1005 | * character is passed over. |
14a5cf38 JH |
1006 | */ |
1007 | if (*e++) { | |
1008 | break; | |
1009 | } | |
1010 | /* | |
71200d45 | 1011 | * Drop through |
14a5cf38 JH |
1012 | */ |
1013 | case '\0': | |
1014 | e--; | |
22569500 NIS |
1015 | if (ckWARN(WARN_LAYER)) |
1016 | Perl_warner(aTHX_ packWARN(WARN_LAYER), | |
b4581f09 | 1017 | "Argument list not closed for PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1018 | (int) (e - s), s); |
1019 | return -1; | |
1020 | default: | |
1021 | /* | |
71200d45 | 1022 | * boring. |
14a5cf38 JH |
1023 | */ |
1024 | break; | |
1025 | } | |
1026 | } | |
1027 | } | |
1028 | if (e > s) { | |
46c461b5 | 1029 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1030 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1031 | if (layer) { | |
a951d81d BL |
1032 | SV *arg = NULL; |
1033 | if (as) | |
1034 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1035 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d BL |
1036 | (arg) ? arg : &PL_sv_undef); |
1037 | if (arg) | |
1038 | SvREFCNT_dec(arg); | |
14a5cf38 JH |
1039 | } |
1040 | else { | |
041457d9 | 1041 | if (ckWARN(WARN_LAYER)) |
b4581f09 | 1042 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1043 | (int) llen, s); |
1044 | return -1; | |
1045 | } | |
1046 | } | |
1047 | s = e; | |
1048 | } | |
1049 | } | |
1050 | } | |
1051 | return 0; | |
1141d9f8 NIS |
1052 | } |
1053 | ||
dfebf958 | 1054 | void |
fcf2db38 | 1055 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1056 | { |
97aff369 | 1057 | dVAR; |
27da23d5 | 1058 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1059 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1060 | tab = &PerlIO_crlf; |
846be114 | 1061 | #else |
6ce75a77 | 1062 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1063 | tab = &PerlIO_stdio; |
846be114 | 1064 | #endif |
14a5cf38 | 1065 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1066 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1067 | &PL_sv_undef); |
dfebf958 NIS |
1068 | } |
1069 | ||
e3f3bf95 | 1070 | SV * |
14a5cf38 | 1071 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1072 | { |
14a5cf38 | 1073 | return av->array[n].arg; |
e3f3bf95 NIS |
1074 | } |
1075 | ||
f3862f8b | 1076 | PerlIO_funcs * |
14a5cf38 | 1077 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1078 | { |
14a5cf38 JH |
1079 | if (n >= 0 && n < av->cur) { |
1080 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1081 | av->array[n].funcs->name); | |
1082 | return av->array[n].funcs; | |
1083 | } | |
1084 | if (!def) | |
1085 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1086 | return def; | |
e3f3bf95 NIS |
1087 | } |
1088 | ||
4ec2216f NIS |
1089 | IV |
1090 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1091 | { | |
8772537c AL |
1092 | PERL_UNUSED_ARG(mode); |
1093 | PERL_UNUSED_ARG(arg); | |
1094 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1095 | if (PerlIOValid(f)) { |
1096 | PerlIO_flush(f); | |
1097 | PerlIO_pop(aTHX_ f); | |
1098 | return 0; | |
1099 | } | |
1100 | return -1; | |
1101 | } | |
1102 | ||
27da23d5 | 1103 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1104 | sizeof(PerlIO_funcs), |
1105 | "pop", | |
1106 | 0, | |
1107 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1108 | PerlIOPop_pushed, | |
1109 | NULL, | |
1110 | NULL, | |
1111 | NULL, | |
1112 | NULL, | |
1113 | NULL, | |
1114 | NULL, | |
1115 | NULL, | |
1116 | NULL, | |
1117 | NULL, | |
1118 | NULL, | |
de009b76 AL |
1119 | NULL, |
1120 | NULL, | |
4ec2216f NIS |
1121 | NULL, /* flush */ |
1122 | NULL, /* fill */ | |
1123 | NULL, | |
1124 | NULL, | |
1125 | NULL, | |
1126 | NULL, | |
1127 | NULL, /* get_base */ | |
1128 | NULL, /* get_bufsiz */ | |
1129 | NULL, /* get_ptr */ | |
1130 | NULL, /* get_cnt */ | |
1131 | NULL, /* set_ptrcnt */ | |
1132 | }; | |
1133 | ||
fcf2db38 | 1134 | PerlIO_list_t * |
e3f3bf95 NIS |
1135 | PerlIO_default_layers(pTHX) |
1136 | { | |
97aff369 | 1137 | dVAR; |
3a1ee7e8 | 1138 | if (!PL_def_layerlist) { |
bd61b366 | 1139 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1140 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1141 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1142 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1143 | #if defined(WIN32) |
27da23d5 | 1144 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1145 | #if 0 |
14a5cf38 | 1146 | osLayer = &PerlIO_win32; |
0c4128ad | 1147 | #endif |
2f8118af | 1148 | #endif |
27da23d5 JH |
1149 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1150 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1151 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1152 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1153 | #ifdef HAS_MMAP |
27da23d5 | 1154 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1155 | #endif |
27da23d5 JH |
1156 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1157 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1158 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1159 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1160 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1161 | &PL_sv_undef); | |
1162 | if (s) { | |
3a1ee7e8 | 1163 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1164 | } |
1165 | else { | |
3a1ee7e8 | 1166 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1167 | } |
1141d9f8 | 1168 | } |
3a1ee7e8 NIS |
1169 | if (PL_def_layerlist->cur < 2) { |
1170 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1171 | } |
3a1ee7e8 | 1172 | return PL_def_layerlist; |
e3f3bf95 NIS |
1173 | } |
1174 | ||
0c4f7ff0 NIS |
1175 | void |
1176 | Perl_boot_core_PerlIO(pTHX) | |
1177 | { | |
1178 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1179 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1180 | __FILE__); | |
0c4f7ff0 | 1181 | #endif |
14a5cf38 | 1182 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1183 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1184 | } |
e3f3bf95 NIS |
1185 | |
1186 | PerlIO_funcs * | |
1187 | PerlIO_default_layer(pTHX_ I32 n) | |
1188 | { | |
97aff369 | 1189 | dVAR; |
46c461b5 | 1190 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1191 | if (n < 0) |
1192 | n += av->cur; | |
27da23d5 | 1193 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1194 | } |
1195 | ||
a999f61b NIS |
1196 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1197 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1198 | |
1199 | void | |
1141d9f8 | 1200 | PerlIO_stdstreams(pTHX) |
60382766 | 1201 | { |
97aff369 | 1202 | dVAR; |
a1ea730d | 1203 | if (!PL_perlio) { |
14a5cf38 JH |
1204 | PerlIO_allocate(aTHX); |
1205 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); | |
1206 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1207 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1208 | } | |
60382766 NIS |
1209 | } |
1210 | ||
1211 | PerlIO * | |
27da23d5 | 1212 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1213 | { |
2dc2558e NIS |
1214 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
1215 | mismatch: | |
1216 | Perl_croak(aTHX_ "Layer does not match this perl"); | |
1217 | } | |
1218 | if (tab->size) { | |
b464bac0 | 1219 | PerlIOl *l; |
2dc2558e NIS |
1220 | if (tab->size < sizeof(PerlIOl)) { |
1221 | goto mismatch; | |
1222 | } | |
1223 | /* Real layer with a data area */ | |
002e75cf JH |
1224 | if (f) { |
1225 | char *temp; | |
1226 | Newxz(temp, tab->size, char); | |
1227 | l = (PerlIOl*)temp; | |
1228 | if (l) { | |
1229 | l->next = *f; | |
1230 | l->tab = (PerlIO_funcs*) tab; | |
1231 | *f = l; | |
1232 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1233 | (void*)f, tab->name, | |
1234 | (mode) ? mode : "(Null)", (void*)arg); | |
1235 | if (*l->tab->Pushed && | |
1236 | (*l->tab->Pushed) | |
1237 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1238 | PerlIO_pop(aTHX_ f); | |
1239 | return NULL; | |
1240 | } | |
2dc2558e | 1241 | } |
002e75cf JH |
1242 | else |
1243 | return NULL; | |
2dc2558e NIS |
1244 | } |
1245 | } | |
1246 | else if (f) { | |
1247 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1248 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1249 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1250 | if (tab->Pushed && |
27da23d5 | 1251 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1252 | return NULL; |
14a5cf38 JH |
1253 | } |
1254 | } | |
1255 | return f; | |
60382766 NIS |
1256 | } |
1257 | ||
dfebf958 | 1258 | IV |
86e05cf2 NIS |
1259 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1260 | { | |
1261 | if (PerlIOValid(f)) { | |
1262 | /* Is layer suitable for raw stream ? */ | |
1263 | if (PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1264 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1265 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1266 | } | |
1267 | else { | |
1268 | /* Not suitable - pop it */ | |
1269 | PerlIO_pop(aTHX_ f); | |
1270 | } | |
1271 | return 0; | |
1272 | } | |
1273 | return -1; | |
1274 | } | |
1275 | ||
1276 | IV | |
2dc2558e | 1277 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1278 | { |
8772537c AL |
1279 | PERL_UNUSED_ARG(mode); |
1280 | PERL_UNUSED_ARG(arg); | |
1281 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1282 | |
04892f78 | 1283 | if (PerlIOValid(f)) { |
86e05cf2 | 1284 | PerlIO *t; |
de009b76 | 1285 | const PerlIOl *l; |
14a5cf38 | 1286 | PerlIO_flush(f); |
86e05cf2 NIS |
1287 | /* |
1288 | * Strip all layers that are not suitable for a raw stream | |
1289 | */ | |
1290 | t = f; | |
1291 | while (t && (l = *t)) { | |
1292 | if (l->tab->Binmode) { | |
1293 | /* Has a handler - normal case */ | |
1294 | if ((*l->tab->Binmode)(aTHX_ f) == 0) { | |
1295 | if (*t == l) { | |
1296 | /* Layer still there - move down a layer */ | |
1297 | t = PerlIONext(t); | |
1298 | } | |
1299 | } | |
1300 | else { | |
1301 | return -1; | |
1302 | } | |
14a5cf38 JH |
1303 | } |
1304 | else { | |
86e05cf2 NIS |
1305 | /* No handler - pop it */ |
1306 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1307 | } |
1308 | } | |
86e05cf2 NIS |
1309 | if (PerlIOValid(f)) { |
1310 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); | |
1311 | return 0; | |
1312 | } | |
14a5cf38 JH |
1313 | } |
1314 | return -1; | |
dfebf958 NIS |
1315 | } |
1316 | ||
ac27b0f5 | 1317 | int |
14a5cf38 | 1318 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1319 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1320 | { |
14a5cf38 JH |
1321 | int code = 0; |
1322 | while (n < max) { | |
8772537c | 1323 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1324 | if (tab) { |
1325 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1326 | code = -1; | |
1327 | break; | |
1328 | } | |
1329 | } | |
1330 | n++; | |
1331 | } | |
1332 | return code; | |
e3f3bf95 NIS |
1333 | } |
1334 | ||
1335 | int | |
ac27b0f5 NIS |
1336 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1337 | { | |
14a5cf38 | 1338 | int code = 0; |
53f1b6d2 | 1339 | if (f && names) { |
8772537c | 1340 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1341 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1342 | if (code == 0) { | |
d9dac8cd | 1343 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1344 | } |
3a1ee7e8 | 1345 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1346 | } |
14a5cf38 | 1347 | return code; |
ac27b0f5 NIS |
1348 | } |
1349 | ||
f3862f8b | 1350 | |
60382766 | 1351 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1352 | /* |
71200d45 | 1353 | * Given the abstraction above the public API functions |
14a5cf38 | 1354 | */ |
60382766 NIS |
1355 | |
1356 | int | |
f5b9d040 | 1357 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1358 | { |
68b5363f PD |
1359 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
1360 | (PerlIOBase(f)) ? PerlIOBase(f)->tab->name : "(Null)", | |
1361 | iotype, mode, (names) ? names : "(Null)"); | |
1362 | ||
03c0554d NIS |
1363 | if (names) { |
1364 | /* Do not flush etc. if (e.g.) switching encodings. | |
1365 | if a pushed layer knows it needs to flush lower layers | |
1366 | (for example :unix which is never going to call them) | |
1367 | it can do the flush when it is pushed. | |
1368 | */ | |
1369 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1370 | } | |
1371 | else { | |
86e05cf2 | 1372 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1373 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1374 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1375 | O_BINARY so we can look for it in mode. | |
1376 | */ | |
1377 | if (!(mode & O_BINARY)) { | |
1378 | /* Text mode */ | |
86e05cf2 NIS |
1379 | /* FIXME?: Looking down the layer stack seems wrong, |
1380 | but is a way of reaching past (say) an encoding layer | |
1381 | to flip CRLF-ness of the layer(s) below | |
1382 | */ | |
03c0554d NIS |
1383 | while (*f) { |
1384 | /* Perhaps we should turn on bottom-most aware layer | |
1385 | e.g. Ilya's idea that UNIX TTY could serve | |
1386 | */ | |
1387 | if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { | |
1388 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1389 | /* Not in text mode - flush any pending stuff and flip it */ | |
1390 | PerlIO_flush(f); | |
1391 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1392 | } | |
1393 | /* Only need to turn it on in one layer so we are done */ | |
1394 | return TRUE; | |
ed53a2bb | 1395 | } |
03c0554d | 1396 | f = PerlIONext(f); |
14a5cf38 | 1397 | } |
03c0554d NIS |
1398 | /* Not finding a CRLF aware layer presumably means we are binary |
1399 | which is not what was requested - so we failed | |
1400 | We _could_ push :crlf layer but so could caller | |
1401 | */ | |
1402 | return FALSE; | |
14a5cf38 | 1403 | } |
6ce75a77 | 1404 | #endif |
86e05cf2 NIS |
1405 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1406 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1407 | */ |
a0714e2c | 1408 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1409 | } |
f5b9d040 NIS |
1410 | } |
1411 | ||
f5b9d040 | 1412 | int |
e87a358a | 1413 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1414 | { |
37725cdc | 1415 | if (PerlIOValid(f)) { |
46c461b5 | 1416 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1417 | if (tab && tab->Close) |
1418 | return (*tab->Close)(aTHX_ f); | |
1419 | else | |
1420 | return PerlIOBase_close(aTHX_ f); | |
1421 | } | |
14a5cf38 | 1422 | else { |
93189314 | 1423 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1424 | return -1; |
1425 | } | |
76ced9ad NIS |
1426 | } |
1427 | ||
b931b1d9 | 1428 | int |
e87a358a | 1429 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1430 | { |
de009b76 | 1431 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1432 | while (PerlIOValid(f)) { |
1433 | PerlIO_pop(aTHX_ f); | |
f6c77cf1 | 1434 | } |
14a5cf38 | 1435 | return code; |
b931b1d9 NIS |
1436 | } |
1437 | ||
b931b1d9 | 1438 | int |
e87a358a | 1439 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1440 | { |
97aff369 | 1441 | dVAR; |
b32dd47e | 1442 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1443 | } |
1444 | ||
1141d9f8 | 1445 | |
fcf2db38 | 1446 | static PerlIO_funcs * |
2edd7e44 NIS |
1447 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1448 | { | |
97aff369 | 1449 | dVAR; |
14a5cf38 | 1450 | /* |
71200d45 | 1451 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1452 | */ |
75208dda RGS |
1453 | if (SvTYPE(sv) < SVt_PVAV) { |
1454 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); | |
1455 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1456 | * but could happen anyway in smaller installs or with PAR */ | |
1457 | if (!f && ckWARN(WARN_LAYER)) | |
1458 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); | |
1459 | return f; | |
1460 | } | |
14a5cf38 JH |
1461 | |
1462 | /* | |
71200d45 | 1463 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1464 | */ |
1465 | switch (SvTYPE(sv)) { | |
1466 | case SVt_PVAV: | |
6a245ed1 | 1467 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1468 | case SVt_PVHV: |
6a245ed1 | 1469 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1470 | case SVt_PVCV: |
6a245ed1 | 1471 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1472 | case SVt_PVGV: |
6a245ed1 | 1473 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1474 | default: |
1475 | return NULL; | |
14a5cf38 | 1476 | } |
2edd7e44 NIS |
1477 | } |
1478 | ||
fcf2db38 | 1479 | PerlIO_list_t * |
14a5cf38 JH |
1480 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1481 | const char *mode, int narg, SV **args) | |
1482 | { | |
97aff369 | 1483 | dVAR; |
14a5cf38 JH |
1484 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1485 | int incdef = 1; | |
a1ea730d | 1486 | if (!PL_perlio) |
14a5cf38 JH |
1487 | PerlIO_stdstreams(aTHX); |
1488 | if (narg) { | |
dcda55fc | 1489 | SV * const arg = *args; |
14a5cf38 | 1490 | /* |
71200d45 NIS |
1491 | * If it is a reference but not an object see if we have a handler |
1492 | * for it | |
14a5cf38 JH |
1493 | */ |
1494 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1495 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1496 | if (handler) { |
3a1ee7e8 NIS |
1497 | def = PerlIO_list_alloc(aTHX); |
1498 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1499 | incdef = 0; |
1500 | } | |
1501 | /* | |
e934609f | 1502 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1503 | * something sensible else we will just stringfy and open |
71200d45 | 1504 | * resulting string. |
14a5cf38 JH |
1505 | */ |
1506 | } | |
1507 | } | |
9fe371da | 1508 | if (!layers || !*layers) |
11bcd5da | 1509 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1510 | if (layers && *layers) { |
1511 | PerlIO_list_t *av; | |
1512 | if (incdef) { | |
a951d81d | 1513 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1514 | } |
1515 | else { | |
1516 | av = def; | |
1517 | } | |
0cff2cf3 NIS |
1518 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1519 | return av; | |
1520 | } | |
1521 | else { | |
1522 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1523 | return NULL; |
0cff2cf3 | 1524 | } |
14a5cf38 JH |
1525 | } |
1526 | else { | |
1527 | if (incdef) | |
1528 | def->refcnt++; | |
1529 | return def; | |
1530 | } | |
ee518936 NIS |
1531 | } |
1532 | ||
1533 | PerlIO * | |
14a5cf38 JH |
1534 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1535 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1536 | { | |
97aff369 | 1537 | dVAR; |
14a5cf38 JH |
1538 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1539 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1540 | if (!layers || !*layers) |
11bcd5da | 1541 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1542 | if (layers && *layers) |
1543 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1544 | } | |
1545 | } | |
1546 | else { | |
de009b76 | 1547 | PerlIO_list_t *layera; |
14a5cf38 JH |
1548 | IV n; |
1549 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1550 | if (PerlIOValid(f)) { |
14a5cf38 | 1551 | /* |
71200d45 NIS |
1552 | * This is "reopen" - it is not tested as perl does not use it |
1553 | * yet | |
14a5cf38 JH |
1554 | */ |
1555 | PerlIOl *l = *f; | |
3a1ee7e8 | 1556 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1557 | while (l) { |
a951d81d BL |
1558 | SV *arg = NULL; |
1559 | if (l->tab->Getarg) | |
1560 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); | |
1561 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1562 | (arg) ? arg : &PL_sv_undef); | |
1563 | if (arg) | |
1564 | SvREFCNT_dec(arg); | |
14a5cf38 JH |
1565 | l = *PerlIONext(&l); |
1566 | } | |
1567 | } | |
1568 | else { | |
1569 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1570 | if (!layera) { |
1571 | return NULL; | |
1572 | } | |
14a5cf38 JH |
1573 | } |
1574 | /* | |
71200d45 | 1575 | * Start at "top" of layer stack |
14a5cf38 JH |
1576 | */ |
1577 | n = layera->cur - 1; | |
1578 | while (n >= 0) { | |
46c461b5 | 1579 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1580 | if (t && t->Open) { |
1581 | tab = t; | |
1582 | break; | |
1583 | } | |
1584 | n--; | |
1585 | } | |
1586 | if (tab) { | |
1587 | /* | |
71200d45 | 1588 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1589 | */ |
7cf31beb | 1590 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1591 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1592 | } |
14a5cf38 | 1593 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1594 | tab->name, layers ? layers : "(Null)", mode, fd, |
1595 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1596 | if (tab->Open) |
1597 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1598 | f, narg, args); | |
1599 | else { | |
1600 | SETERRNO(EINVAL, LIB_INVARG); | |
1601 | f = NULL; | |
1602 | } | |
14a5cf38 JH |
1603 | if (f) { |
1604 | if (n + 1 < layera->cur) { | |
1605 | /* | |
1606 | * More layers above the one that we used to open - | |
71200d45 | 1607 | * apply them now |
14a5cf38 | 1608 | */ |
d9dac8cd NIS |
1609 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1610 | /* If pushing layers fails close the file */ | |
1611 | PerlIO_close(f); | |
14a5cf38 JH |
1612 | f = NULL; |
1613 | } | |
1614 | } | |
1615 | } | |
1616 | } | |
3a1ee7e8 | 1617 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1618 | } |
1619 | return f; | |
ee518936 | 1620 | } |
b931b1d9 NIS |
1621 | |
1622 | ||
9e353e3b | 1623 | SSize_t |
e87a358a | 1624 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1625 | { |
b32dd47e | 1626 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1627 | } |
1628 | ||
313ca112 | 1629 | SSize_t |
e87a358a | 1630 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1631 | { |
b32dd47e | 1632 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1633 | } |
1634 | ||
9e353e3b | 1635 | SSize_t |
e87a358a | 1636 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1637 | { |
b32dd47e | 1638 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1639 | } |
1640 | ||
6f9d8c32 | 1641 | int |
e87a358a | 1642 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1643 | { |
b32dd47e | 1644 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1645 | } |
1646 | ||
9e353e3b | 1647 | Off_t |
e87a358a | 1648 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1649 | { |
b32dd47e | 1650 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1651 | } |
1652 | ||
6f9d8c32 | 1653 | int |
e87a358a | 1654 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1655 | { |
97aff369 | 1656 | dVAR; |
14a5cf38 JH |
1657 | if (f) { |
1658 | if (*f) { | |
de009b76 | 1659 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1660 | |
1661 | if (tab && tab->Flush) | |
f62ce20a | 1662 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1663 | else |
1664 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1665 | } |
1666 | else { | |
fe5a182c | 1667 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1668 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1669 | return -1; |
1670 | } | |
1671 | } | |
1672 | else { | |
1673 | /* | |
1674 | * Is it good API design to do flush-all on NULL, a potentially | |
1675 | * errorneous input? Maybe some magical value (PerlIO* | |
1676 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1677 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1678 | * decisions? --jhi |
14a5cf38 | 1679 | */ |
a1ea730d | 1680 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1681 | int code = 0; |
1682 | while ((f = *table)) { | |
1683 | int i; | |
1684 | table = (PerlIO **) (f++); | |
1685 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1686 | if (*f && PerlIO_flush(f) != 0) | |
1687 | code = -1; | |
1688 | f++; | |
1689 | } | |
1690 | } | |
1691 | return code; | |
1692 | } | |
760ac839 LW |
1693 | } |
1694 | ||
a9c883f6 | 1695 | void |
f62ce20a | 1696 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1697 | { |
97aff369 | 1698 | dVAR; |
a1ea730d | 1699 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1700 | PerlIO *f; |
1701 | while ((f = *table)) { | |
1702 | int i; | |
1703 | table = (PerlIO **) (f++); | |
1704 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1705 | if (*f | |
1706 | && (PerlIOBase(f)-> | |
1707 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1708 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1709 | PerlIO_flush(f); | |
1710 | f++; | |
1711 | } | |
a9c883f6 | 1712 | } |
a9c883f6 NIS |
1713 | } |
1714 | ||
06da4f11 | 1715 | int |
e87a358a | 1716 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1717 | { |
b32dd47e | 1718 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1719 | } |
1720 | ||
f3862f8b NIS |
1721 | int |
1722 | PerlIO_isutf8(PerlIO *f) | |
1723 | { | |
1b7a0411 JH |
1724 | if (PerlIOValid(f)) |
1725 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1726 | else | |
1727 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1728 | |
1b7a0411 | 1729 | return -1; |
f3862f8b NIS |
1730 | } |
1731 | ||
6f9d8c32 | 1732 | int |
e87a358a | 1733 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1734 | { |
b32dd47e | 1735 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1736 | } |
1737 | ||
9e353e3b | 1738 | int |
e87a358a | 1739 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1740 | { |
b32dd47e | 1741 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1742 | } |
1743 | ||
9e353e3b | 1744 | void |
e87a358a | 1745 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1746 | { |
b32dd47e | 1747 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1748 | } |
1749 | ||
9e353e3b | 1750 | void |
e87a358a | 1751 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1752 | { |
b32dd47e | 1753 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1754 | } |
1755 | ||
9e353e3b NIS |
1756 | int |
1757 | PerlIO_has_base(PerlIO *f) | |
1758 | { | |
1b7a0411 | 1759 | if (PerlIOValid(f)) { |
46c461b5 | 1760 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1761 | |
1762 | if (tab) | |
1763 | return (tab->Get_base != NULL); | |
1764 | SETERRNO(EINVAL, LIB_INVARG); | |
1765 | } | |
1766 | else | |
1767 | SETERRNO(EBADF, SS_IVCHAN); | |
1768 | ||
1769 | return 0; | |
760ac839 LW |
1770 | } |
1771 | ||
9e353e3b NIS |
1772 | int |
1773 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1774 | { |
04892f78 | 1775 | if (PerlIOValid(f) && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) { |
46c461b5 | 1776 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1777 | |
1778 | if (tab) | |
1779 | return (tab->Set_ptrcnt != NULL); | |
1780 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1781 | } |
1b7a0411 JH |
1782 | else |
1783 | SETERRNO(EBADF, SS_IVCHAN); | |
1784 | ||
14a5cf38 | 1785 | return 0; |
9e353e3b NIS |
1786 | } |
1787 | ||
9e353e3b NIS |
1788 | int |
1789 | PerlIO_has_cntptr(PerlIO *f) | |
1790 | { | |
04892f78 | 1791 | if (PerlIOValid(f)) { |
46c461b5 | 1792 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1793 | |
1794 | if (tab) | |
1795 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1796 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1797 | } |
1b7a0411 JH |
1798 | else |
1799 | SETERRNO(EBADF, SS_IVCHAN); | |
1800 | ||
14a5cf38 | 1801 | return 0; |
9e353e3b NIS |
1802 | } |
1803 | ||
9e353e3b NIS |
1804 | int |
1805 | PerlIO_canset_cnt(PerlIO *f) | |
1806 | { | |
04892f78 | 1807 | if (PerlIOValid(f)) { |
46c461b5 | 1808 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1809 | |
1810 | if (tab) | |
1811 | return (tab->Set_ptrcnt != NULL); | |
1812 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1813 | } |
1b7a0411 JH |
1814 | else |
1815 | SETERRNO(EBADF, SS_IVCHAN); | |
1816 | ||
14a5cf38 | 1817 | return 0; |
760ac839 LW |
1818 | } |
1819 | ||
888911fc | 1820 | STDCHAR * |
e87a358a | 1821 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1822 | { |
b32dd47e | 1823 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1824 | } |
1825 | ||
9e353e3b | 1826 | int |
e87a358a | 1827 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1828 | { |
b32dd47e | 1829 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1830 | } |
1831 | ||
9e353e3b | 1832 | STDCHAR * |
e87a358a | 1833 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1834 | { |
b32dd47e | 1835 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1836 | } |
1837 | ||
05d1247b | 1838 | int |
e87a358a | 1839 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1840 | { |
b32dd47e | 1841 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1842 | } |
1843 | ||
9e353e3b | 1844 | void |
e87a358a | 1845 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1846 | { |
b32dd47e | 1847 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1848 | } |
1849 | ||
9e353e3b | 1850 | void |
e87a358a | 1851 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1852 | { |
b32dd47e | 1853 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1854 | } |
1855 | ||
4ec2216f | 1856 | |
9e353e3b | 1857 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1858 | /* |
71200d45 | 1859 | * utf8 and raw dummy layers |
14a5cf38 | 1860 | */ |
dfebf958 | 1861 | |
26fb694e | 1862 | IV |
2dc2558e | 1863 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1864 | { |
96a5add6 | 1865 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1866 | PERL_UNUSED_ARG(mode); |
1867 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1868 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1869 | if (tab->kind & PERLIO_K_UTF8) |
1870 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1871 | else | |
1872 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1873 | return 0; | |
1874 | } | |
1875 | return -1; | |
26fb694e NIS |
1876 | } |
1877 | ||
27da23d5 | 1878 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1879 | sizeof(PerlIO_funcs), |
14a5cf38 | 1880 | "utf8", |
2dc2558e | 1881 | 0, |
6874a2de | 1882 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1883 | PerlIOUtf8_pushed, |
1884 | NULL, | |
1885 | NULL, | |
1886 | NULL, | |
1887 | NULL, | |
1888 | NULL, | |
1889 | NULL, | |
1890 | NULL, | |
1891 | NULL, | |
1892 | NULL, | |
1893 | NULL, | |
de009b76 AL |
1894 | NULL, |
1895 | NULL, | |
22569500 NIS |
1896 | NULL, /* flush */ |
1897 | NULL, /* fill */ | |
14a5cf38 JH |
1898 | NULL, |
1899 | NULL, | |
1900 | NULL, | |
1901 | NULL, | |
22569500 NIS |
1902 | NULL, /* get_base */ |
1903 | NULL, /* get_bufsiz */ | |
1904 | NULL, /* get_ptr */ | |
1905 | NULL, /* get_cnt */ | |
1906 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1907 | }; |
1908 | ||
27da23d5 | 1909 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1910 | sizeof(PerlIO_funcs), |
14a5cf38 | 1911 | "bytes", |
2dc2558e | 1912 | 0, |
14a5cf38 JH |
1913 | PERLIO_K_DUMMY, |
1914 | PerlIOUtf8_pushed, | |
1915 | NULL, | |
1916 | NULL, | |
1917 | NULL, | |
1918 | NULL, | |
1919 | NULL, | |
1920 | NULL, | |
1921 | NULL, | |
1922 | NULL, | |
1923 | NULL, | |
1924 | NULL, | |
de009b76 AL |
1925 | NULL, |
1926 | NULL, | |
22569500 NIS |
1927 | NULL, /* flush */ |
1928 | NULL, /* fill */ | |
14a5cf38 JH |
1929 | NULL, |
1930 | NULL, | |
1931 | NULL, | |
1932 | NULL, | |
22569500 NIS |
1933 | NULL, /* get_base */ |
1934 | NULL, /* get_bufsiz */ | |
1935 | NULL, /* get_ptr */ | |
1936 | NULL, /* get_cnt */ | |
1937 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1938 | }; |
1939 | ||
1940 | PerlIO * | |
14a5cf38 JH |
1941 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1942 | IV n, const char *mode, int fd, int imode, int perm, | |
1943 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1944 | { |
8772537c AL |
1945 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1946 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1947 | if (tab && tab->Open) |
1948 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1949 | old, narg, args); | |
1950 | SETERRNO(EINVAL, LIB_INVARG); | |
1951 | return NULL; | |
dfebf958 NIS |
1952 | } |
1953 | ||
27da23d5 | 1954 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1955 | sizeof(PerlIO_funcs), |
14a5cf38 | 1956 | "raw", |
2dc2558e | 1957 | 0, |
14a5cf38 JH |
1958 | PERLIO_K_DUMMY, |
1959 | PerlIORaw_pushed, | |
1960 | PerlIOBase_popped, | |
1961 | PerlIORaw_open, | |
1962 | NULL, | |
1963 | NULL, | |
1964 | NULL, | |
1965 | NULL, | |
1966 | NULL, | |
1967 | NULL, | |
1968 | NULL, | |
1969 | NULL, | |
de009b76 AL |
1970 | NULL, |
1971 | NULL, | |
22569500 NIS |
1972 | NULL, /* flush */ |
1973 | NULL, /* fill */ | |
14a5cf38 JH |
1974 | NULL, |
1975 | NULL, | |
1976 | NULL, | |
1977 | NULL, | |
22569500 NIS |
1978 | NULL, /* get_base */ |
1979 | NULL, /* get_bufsiz */ | |
1980 | NULL, /* get_ptr */ | |
1981 | NULL, /* get_cnt */ | |
1982 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1983 | }; |
1984 | /*--------------------------------------------------------------------------------------*/ | |
1985 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1986 | /* |
71200d45 | 1987 | * "Methods" of the "base class" |
14a5cf38 | 1988 | */ |
9e353e3b NIS |
1989 | |
1990 | IV | |
f62ce20a | 1991 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1992 | { |
04892f78 | 1993 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1994 | } |
1995 | ||
f5b9d040 | 1996 | char * |
81428673 | 1997 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1998 | { |
1999 | char *s = buf; | |
81428673 | 2000 | if (PerlIOValid(f)) { |
de009b76 | 2001 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2002 | if (flags & PERLIO_F_APPEND) { |
2003 | *s++ = 'a'; | |
2004 | if (flags & PERLIO_F_CANREAD) { | |
2005 | *s++ = '+'; | |
2006 | } | |
14a5cf38 | 2007 | } |
81428673 NIS |
2008 | else if (flags & PERLIO_F_CANREAD) { |
2009 | *s++ = 'r'; | |
2010 | if (flags & PERLIO_F_CANWRITE) | |
2011 | *s++ = '+'; | |
2012 | } | |
2013 | else if (flags & PERLIO_F_CANWRITE) { | |
2014 | *s++ = 'w'; | |
2015 | if (flags & PERLIO_F_CANREAD) { | |
2016 | *s++ = '+'; | |
2017 | } | |
14a5cf38 | 2018 | } |
35990314 | 2019 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2020 | if (!(flags & PERLIO_F_CRLF)) |
2021 | *s++ = 'b'; | |
5f1a76d0 | 2022 | #endif |
81428673 | 2023 | } |
14a5cf38 JH |
2024 | *s = '\0'; |
2025 | return buf; | |
f5b9d040 NIS |
2026 | } |
2027 | ||
81428673 | 2028 | |
76ced9ad | 2029 | IV |
2dc2558e | 2030 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2031 | { |
de009b76 | 2032 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2033 | PERL_UNUSED_CONTEXT; |
8772537c | 2034 | PERL_UNUSED_ARG(arg); |
de009b76 | 2035 | |
14a5cf38 JH |
2036 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2037 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2038 | if (tab->Set_ptrcnt != NULL) | |
2039 | l->flags |= PERLIO_F_FASTGETS; | |
2040 | if (mode) { | |
3b6c1aba | 2041 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2042 | mode++; |
2043 | switch (*mode++) { | |
2044 | case 'r': | |
2045 | l->flags |= PERLIO_F_CANREAD; | |
2046 | break; | |
2047 | case 'a': | |
2048 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2049 | break; | |
2050 | case 'w': | |
2051 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2052 | break; | |
2053 | default: | |
93189314 | 2054 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2055 | return -1; |
2056 | } | |
2057 | while (*mode) { | |
2058 | switch (*mode++) { | |
2059 | case '+': | |
2060 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2061 | break; | |
2062 | case 'b': | |
2063 | l->flags &= ~PERLIO_F_CRLF; | |
2064 | break; | |
2065 | case 't': | |
2066 | l->flags |= PERLIO_F_CRLF; | |
2067 | break; | |
2068 | default: | |
93189314 | 2069 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2070 | return -1; |
2071 | } | |
2072 | } | |
2073 | } | |
2074 | else { | |
2075 | if (l->next) { | |
2076 | l->flags |= l->next->flags & | |
2077 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2078 | PERLIO_F_APPEND); | |
2079 | } | |
2080 | } | |
5e2ab84b | 2081 | #if 0 |
14a5cf38 | 2082 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2083 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2084 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2085 | #endif |
14a5cf38 | 2086 | return 0; |
76ced9ad NIS |
2087 | } |
2088 | ||
2089 | IV | |
f62ce20a | 2090 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2091 | { |
96a5add6 | 2092 | PERL_UNUSED_CONTEXT; |
8772537c | 2093 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2094 | return 0; |
760ac839 LW |
2095 | } |
2096 | ||
9e353e3b | 2097 | SSize_t |
f62ce20a | 2098 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2099 | { |
14a5cf38 | 2100 | /* |
71200d45 | 2101 | * Save the position as current head considers it |
14a5cf38 | 2102 | */ |
de009b76 | 2103 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2104 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2105 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2106 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2107 | } |
2108 | ||
f6c77cf1 | 2109 | SSize_t |
f62ce20a | 2110 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2111 | { |
14a5cf38 JH |
2112 | STDCHAR *buf = (STDCHAR *) vbuf; |
2113 | if (f) { | |
263df5f1 JH |
2114 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2115 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2116 | SETERRNO(EBADF, SS_IVCHAN); | |
2117 | return 0; | |
2118 | } | |
14a5cf38 | 2119 | while (count > 0) { |
93c2c2ec IZ |
2120 | get_cnt: |
2121 | { | |
14a5cf38 JH |
2122 | SSize_t avail = PerlIO_get_cnt(f); |
2123 | SSize_t take = 0; | |
2124 | if (avail > 0) | |
bb7a0f54 | 2125 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2126 | if (take > 0) { |
2127 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2128 | Copy(ptr, buf, take, STDCHAR); | |
2129 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2130 | count -= take; | |
2131 | buf += take; | |
93c2c2ec IZ |
2132 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2133 | goto get_cnt; | |
14a5cf38 JH |
2134 | } |
2135 | if (count > 0 && avail <= 0) { | |
2136 | if (PerlIO_fill(f) != 0) | |
2137 | break; | |
2138 | } | |
93c2c2ec | 2139 | } |
14a5cf38 JH |
2140 | } |
2141 | return (buf - (STDCHAR *) vbuf); | |
2142 | } | |
f6c77cf1 | 2143 | return 0; |
f6c77cf1 NIS |
2144 | } |
2145 | ||
9e353e3b | 2146 | IV |
f62ce20a | 2147 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2148 | { |
96a5add6 | 2149 | PERL_UNUSED_CONTEXT; |
8772537c | 2150 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2151 | return 0; |
9e353e3b NIS |
2152 | } |
2153 | ||
2154 | IV | |
f62ce20a | 2155 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2156 | { |
96a5add6 | 2157 | PERL_UNUSED_CONTEXT; |
8772537c | 2158 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2159 | return -1; |
06da4f11 NIS |
2160 | } |
2161 | ||
2162 | IV | |
f62ce20a | 2163 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2164 | { |
37725cdc NIS |
2165 | IV code = -1; |
2166 | if (PerlIOValid(f)) { | |
2167 | PerlIO *n = PerlIONext(f); | |
2168 | code = PerlIO_flush(f); | |
2169 | PerlIOBase(f)->flags &= | |
2170 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2171 | while (PerlIOValid(n)) { | |
de009b76 | 2172 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2173 | if (tab && tab->Close) { |
2174 | if ((*tab->Close)(aTHX_ n) != 0) | |
2175 | code = -1; | |
2176 | break; | |
2177 | } | |
2178 | else { | |
2179 | PerlIOBase(n)->flags &= | |
2180 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2181 | } | |
2182 | n = PerlIONext(n); | |
2183 | } | |
2184 | } | |
2185 | else { | |
2186 | SETERRNO(EBADF, SS_IVCHAN); | |
2187 | } | |
14a5cf38 | 2188 | return code; |
9e353e3b NIS |
2189 | } |
2190 | ||
2191 | IV | |
f62ce20a | 2192 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2193 | { |
96a5add6 | 2194 | PERL_UNUSED_CONTEXT; |
04892f78 | 2195 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2196 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2197 | } | |
2198 | return 1; | |
9e353e3b NIS |
2199 | } |
2200 | ||
2201 | IV | |
f62ce20a | 2202 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2203 | { |
96a5add6 | 2204 | PERL_UNUSED_CONTEXT; |
04892f78 | 2205 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2206 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2207 | } | |
2208 | return 1; | |
9e353e3b NIS |
2209 | } |
2210 | ||
2211 | void | |
f62ce20a | 2212 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2213 | { |
04892f78 | 2214 | if (PerlIOValid(f)) { |
dcda55fc | 2215 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2216 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2217 | if (PerlIOValid(n)) |
14a5cf38 JH |
2218 | PerlIO_clearerr(n); |
2219 | } | |
9e353e3b NIS |
2220 | } |
2221 | ||
2222 | void | |
f62ce20a | 2223 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2224 | { |
96a5add6 | 2225 | PERL_UNUSED_CONTEXT; |
04892f78 | 2226 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2227 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2228 | } | |
9e353e3b NIS |
2229 | } |
2230 | ||
93a8090d NIS |
2231 | SV * |
2232 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2233 | { | |
2234 | if (!arg) | |
a0714e2c | 2235 | return NULL; |
93a8090d NIS |
2236 | #ifdef sv_dup |
2237 | if (param) { | |
a951d81d BL |
2238 | arg = sv_dup(arg, param); |
2239 | SvREFCNT_inc_simple_void_NN(arg); | |
2240 | return arg; | |
93a8090d NIS |
2241 | } |
2242 | else { | |
2243 | return newSVsv(arg); | |
2244 | } | |
2245 | #else | |
1b6737cc | 2246 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2247 | return newSVsv(arg); |
2248 | #endif | |
2249 | } | |
2250 | ||
2251 | PerlIO * | |
ecdeb87c | 2252 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2253 | { |
1b6737cc | 2254 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2255 | if (PerlIOValid(nexto)) { |
de009b76 | 2256 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2257 | if (tab && tab->Dup) |
2258 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2259 | else | |
2260 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2261 | } |
2262 | if (f) { | |
dcda55fc | 2263 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2264 | SV *arg = NULL; |
93a8090d | 2265 | char buf[8]; |
fe5a182c JH |
2266 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2267 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2268 | if (self->Getarg) |
2269 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2270 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2271 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2272 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
a951d81d | 2273 | if (arg) |
93a8090d | 2274 | SvREFCNT_dec(arg); |
93a8090d NIS |
2275 | } |
2276 | return f; | |
2277 | } | |
2278 | ||
27da23d5 | 2279 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2280 | |
8b84d7dd | 2281 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2282 | static void |
2283 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2284 | dVAR; |
22c96fc1 | 2285 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2286 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2287 | int *new_array; |
2288 | ||
2289 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2290 | old_max, new_fd, new_max); | |
2291 | ||
2292 | if (new_fd < old_max) { | |
2293 | return; | |
2294 | } | |
2295 | ||
f4ae5be6 NC |
2296 | assert (new_max > new_fd); |
2297 | ||
eae082a0 JH |
2298 | /* Use plain realloc() since we need this memory to be really |
2299 | * global and visible to all the interpreters and/or threads. */ | |
2300 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2301 | |
2302 | if (!new_array) { | |
8b84d7dd | 2303 | #ifdef USE_ITHREADS |
6cb8cb21 | 2304 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2305 | #endif |
2306 | /* Can't use PerlIO to write as it allocates memory */ | |
2307 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2308 | PL_no_mem, strlen(PL_no_mem)); | |
2309 | my_exit(1); | |
2310 | } | |
2311 | ||
2312 | PL_perlio_fd_refcnt_size = new_max; | |
2313 | PL_perlio_fd_refcnt = new_array; | |
2314 | ||
95b63a38 JH |
2315 | PerlIO_debug("Zeroing %p, %d\n", |
2316 | (void*)(new_array + old_max), | |
2317 | new_max - old_max); | |
22c96fc1 NC |
2318 | |
2319 | Zero(new_array + old_max, new_max - old_max, int); | |
2320 | } | |
2321 | ||
2322 | ||
93a8090d NIS |
2323 | void |
2324 | PerlIO_init(pTHX) | |
2325 | { | |
8b84d7dd | 2326 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2327 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2328 | } |
2329 | ||
168d5872 NIS |
2330 | void |
2331 | PerlIOUnix_refcnt_inc(int fd) | |
2332 | { | |
27da23d5 | 2333 | dTHX; |
22c96fc1 | 2334 | if (fd >= 0) { |
97aff369 | 2335 | dVAR; |
22c96fc1 | 2336 | |
8b84d7dd | 2337 | #ifdef USE_ITHREADS |
6cb8cb21 | 2338 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2339 | #endif |
22c96fc1 NC |
2340 | if (fd >= PL_perlio_fd_refcnt_size) |
2341 | S_more_refcounted_fds(aTHX_ fd); | |
2342 | ||
27da23d5 | 2343 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd RGS |
2344 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
2345 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2346 | fd, PL_perlio_fd_refcnt[fd]); | |
2347 | } | |
2348 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2349 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2350 | |
8b84d7dd | 2351 | #ifdef USE_ITHREADS |
6cb8cb21 | 2352 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2353 | #endif |
8b84d7dd RGS |
2354 | } else { |
2355 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2356 | } |
2357 | } | |
2358 | ||
168d5872 NIS |
2359 | int |
2360 | PerlIOUnix_refcnt_dec(int fd) | |
2361 | { | |
27da23d5 | 2362 | dTHX; |
168d5872 | 2363 | int cnt = 0; |
22c96fc1 | 2364 | if (fd >= 0) { |
97aff369 | 2365 | dVAR; |
8b84d7dd | 2366 | #ifdef USE_ITHREADS |
6cb8cb21 | 2367 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2368 | #endif |
8b84d7dd RGS |
2369 | if (fd >= PL_perlio_fd_refcnt_size) { |
2370 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", | |
2371 | fd, PL_perlio_fd_refcnt_size); | |
2372 | } | |
2373 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2374 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", | |
2375 | fd, PL_perlio_fd_refcnt[fd]); | |
2376 | } | |
27da23d5 | 2377 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2378 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2379 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2380 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2381 | #endif |
8b84d7dd RGS |
2382 | } else { |
2383 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2384 | } |
2385 | return cnt; | |
2386 | } | |
2387 | ||
694c95cf JH |
2388 | void |
2389 | PerlIO_cleanup(pTHX) | |
2390 | { | |
97aff369 | 2391 | dVAR; |
694c95cf JH |
2392 | int i; |
2393 | #ifdef USE_ITHREADS | |
a25429c6 | 2394 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2395 | #else |
2396 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2397 | #endif |
e47547a8 | 2398 | |
694c95cf JH |
2399 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2400 | for (i=0; i < 3; i++) | |
2401 | PerlIOUnix_refcnt_inc(i); | |
2402 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2403 | /* Restore STDIN..STDERR refcount */ | |
2404 | for (i=0; i < 3; i++) | |
2405 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2406 | |
2407 | if (PL_known_layers) { | |
2408 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2409 | PL_known_layers = NULL; | |
2410 | } | |
27da23d5 | 2411 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2412 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2413 | PL_def_layerlist = NULL; | |
2414 | } | |
6cb8cb21 RGS |
2415 | } |
2416 | ||
2417 | void PerlIO_teardown(pTHX) /* Call only from PERL_SYS_TERM(). */ | |
2418 | { | |
53d44271 | 2419 | dVAR; |
6cb8cb21 RGS |
2420 | #ifdef DEBUGGING |
2421 | { | |
2422 | /* By now all filehandles should have been closed, so any | |
2423 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2424 | * errors. */ | |
2425 | int i; | |
2426 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
2427 | if (PL_perlio_fd_refcnt[i]) | |
2428 | PerlIO_debug("PerlIO_cleanup: fd %d refcnt=%d\n", | |
2429 | i, PL_perlio_fd_refcnt[i]); | |
2430 | } | |
2431 | } | |
2432 | #endif | |
eae082a0 JH |
2433 | /* Not bothering with PL_perlio_mutex since by now |
2434 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2435 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2436 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2437 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2438 | PL_perlio_fd_refcnt = NULL; |
2439 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2440 | } |
694c95cf JH |
2441 | } |
2442 | ||
9e353e3b | 2443 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2444 | /* |
71200d45 | 2445 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2446 | */ |
9e353e3b | 2447 | |
14a5cf38 | 2448 | typedef struct { |
22569500 NIS |
2449 | struct _PerlIO base; /* The generic part */ |
2450 | int fd; /* UNIX like file descriptor */ | |
2451 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2452 | } PerlIOUnix; |
2453 | ||
6f9d8c32 | 2454 | int |
9e353e3b | 2455 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2456 | { |
14a5cf38 | 2457 | int oflags = -1; |
3b6c1aba | 2458 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2459 | mode++; |
2460 | switch (*mode) { | |
2461 | case 'r': | |
2462 | oflags = O_RDONLY; | |
2463 | if (*++mode == '+') { | |
2464 | oflags = O_RDWR; | |
2465 | mode++; | |
2466 | } | |
2467 | break; | |
2468 | ||
2469 | case 'w': | |
2470 | oflags = O_CREAT | O_TRUNC; | |
2471 | if (*++mode == '+') { | |
2472 | oflags |= O_RDWR; | |
2473 | mode++; | |
2474 | } | |
2475 | else | |
2476 | oflags |= O_WRONLY; | |
2477 | break; | |
2478 | ||
2479 | case 'a': | |
2480 | oflags = O_CREAT | O_APPEND; | |
2481 | if (*++mode == '+') { | |
2482 | oflags |= O_RDWR; | |
2483 | mode++; | |
2484 | } | |
2485 | else | |
2486 | oflags |= O_WRONLY; | |
2487 | break; | |
2488 | } | |
2489 | if (*mode == 'b') { | |
2490 | oflags |= O_BINARY; | |
2491 | oflags &= ~O_TEXT; | |
2492 | mode++; | |
2493 | } | |
2494 | else if (*mode == 't') { | |
2495 | oflags |= O_TEXT; | |
2496 | oflags &= ~O_BINARY; | |
2497 | mode++; | |
2498 | } | |
2499 | /* | |
71200d45 | 2500 | * Always open in binary mode |
14a5cf38 JH |
2501 | */ |
2502 | oflags |= O_BINARY; | |
2503 | if (*mode || oflags == -1) { | |
93189314 | 2504 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2505 | oflags = -1; |
2506 | } | |
2507 | return oflags; | |
9e353e3b NIS |
2508 | } |
2509 | ||
2510 | IV | |
f62ce20a | 2511 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2512 | { |
96a5add6 | 2513 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2514 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2515 | } |
2516 | ||
aa063c35 NIS |
2517 | static void |
2518 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2519 | { |
de009b76 | 2520 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2521 | #if defined(WIN32) |
aa063c35 NIS |
2522 | Stat_t st; |
2523 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2524 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2525 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2526 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2527 | } | |
aa063c35 NIS |
2528 | else { |
2529 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2530 | } | |
6caa5a9c NIS |
2531 | } |
2532 | #endif | |
aa063c35 NIS |
2533 | s->fd = fd; |
2534 | s->oflags = imode; | |
2535 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2536 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2537 | } |
2538 | ||
2539 | IV | |
2540 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2541 | { | |
2542 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2543 | if (*PerlIONext(f)) { |
4b069b44 | 2544 | /* We never call down so do any pending stuff now */ |
03c0554d | 2545 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2546 | /* |
71200d45 | 2547 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2548 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2549 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2550 | */ |
acbd16bf | 2551 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2552 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2553 | } |
2554 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2555 | |
14a5cf38 | 2556 | return code; |
4b803d04 NIS |
2557 | } |
2558 | ||
c2fcde81 JH |
2559 | IV |
2560 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2561 | { | |
de009b76 | 2562 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2563 | Off_t new_loc; |
96a5add6 | 2564 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2565 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2566 | #ifdef ESPIPE | |
2567 | SETERRNO(ESPIPE, LIB_INVARG); | |
2568 | #else | |
2569 | SETERRNO(EINVAL, LIB_INVARG); | |
2570 | #endif | |
2571 | return -1; | |
2572 | } | |
0723351e NC |
2573 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2574 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2575 | return -1; |
c2fcde81 JH |
2576 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2577 | return 0; | |
2578 | } | |
2579 | ||
9e353e3b | 2580 | PerlIO * |
14a5cf38 JH |
2581 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2582 | IV n, const char *mode, int fd, int imode, | |
2583 | int perm, PerlIO *f, int narg, SV **args) | |
2584 | { | |
d9dac8cd | 2585 | if (PerlIOValid(f)) { |
14a5cf38 | 2586 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2587 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2588 | } |
2589 | if (narg > 0) { | |
3b6c1aba | 2590 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2591 | mode++; |
2592 | else { | |
2593 | imode = PerlIOUnix_oflags(mode); | |
2594 | perm = 0666; | |
2595 | } | |
2596 | if (imode != -1) { | |
e62f0680 | 2597 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2598 | fd = PerlLIO_open3(path, imode, perm); |
2599 | } | |
2600 | } | |
2601 | if (fd >= 0) { | |
3b6c1aba | 2602 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2603 | mode++; |
2604 | if (!f) { | |
2605 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2606 | } |
2607 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2608 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2609 | return NULL; | |
2610 | } | |
d9dac8cd | 2611 | } |
aa063c35 | 2612 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2613 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2614 | if (*mode == IoTYPE_APPEND) |
2615 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2616 | return f; |
2617 | } | |
2618 | else { | |
2619 | if (f) { | |
6f207bd3 | 2620 | NOOP; |
14a5cf38 | 2621 | /* |
71200d45 | 2622 | * FIXME: pop layers ??? |
14a5cf38 JH |
2623 | */ |
2624 | } | |
2625 | return NULL; | |
2626 | } | |
9e353e3b NIS |
2627 | } |
2628 | ||
71200d45 | 2629 | PerlIO * |
ecdeb87c | 2630 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2631 | { |
dcda55fc | 2632 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2633 | int fd = os->fd; |
ecdeb87c NIS |
2634 | if (flags & PERLIO_DUP_FD) { |
2635 | fd = PerlLIO_dup(fd); | |
2636 | } | |
22c96fc1 | 2637 | if (fd >= 0) { |
ecdeb87c | 2638 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2639 | if (f) { |
2640 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2641 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2642 | return f; |
2643 | } | |
71200d45 NIS |
2644 | } |
2645 | return NULL; | |
2646 | } | |
2647 | ||
2648 | ||
9e353e3b | 2649 | SSize_t |
f62ce20a | 2650 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2651 | { |
97aff369 | 2652 | dVAR; |
de009b76 | 2653 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2654 | #ifdef PERLIO_STD_SPECIAL |
2655 | if (fd == 0) | |
2656 | return PERLIO_STD_IN(fd, vbuf, count); | |
2657 | #endif | |
81428673 | 2658 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2659 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2660 | return 0; |
1fd8f4ce | 2661 | } |
14a5cf38 | 2662 | while (1) { |
b464bac0 | 2663 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2664 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2665 | if (len < 0) { |
2666 | if (errno != EAGAIN) { | |
2667 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2668 | } | |
2669 | } | |
2670 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2671 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2672 | SETERRNO(0,0); |
2673 | } | |
14a5cf38 JH |
2674 | return len; |
2675 | } | |
2676 | PERL_ASYNC_CHECK(); | |
2677 | } | |
b464bac0 | 2678 | /*NOTREACHED*/ |
9e353e3b NIS |
2679 | } |
2680 | ||
2681 | SSize_t | |
f62ce20a | 2682 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2683 | { |
97aff369 | 2684 | dVAR; |
de009b76 | 2685 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2686 | #ifdef PERLIO_STD_SPECIAL |
2687 | if (fd == 1 || fd == 2) | |
2688 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2689 | #endif | |
14a5cf38 | 2690 | while (1) { |
de009b76 | 2691 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2692 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2693 | if (len < 0) { |
2694 | if (errno != EAGAIN) { | |
2695 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2696 | } | |
2697 | } | |
14a5cf38 JH |
2698 | return len; |
2699 | } | |
2700 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2701 | } |
1b6737cc | 2702 | /*NOTREACHED*/ |
9e353e3b NIS |
2703 | } |
2704 | ||
9e353e3b | 2705 | Off_t |
f62ce20a | 2706 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2707 | { |
96a5add6 AL |
2708 | PERL_UNUSED_CONTEXT; |
2709 | ||
14a5cf38 | 2710 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2711 | } |
2712 | ||
71200d45 | 2713 | |
9e353e3b | 2714 | IV |
f62ce20a | 2715 | PerlIOUnix_close(pTHX_ PerlIO *f) |
9e353e3b | 2716 | { |
97aff369 | 2717 | dVAR; |
de009b76 | 2718 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2719 | int code = 0; |
168d5872 NIS |
2720 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2721 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2722 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2723 | return 0; | |
22569500 | 2724 | } |
93a8090d NIS |
2725 | } |
2726 | else { | |
93189314 | 2727 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2728 | return -1; |
2729 | } | |
14a5cf38 JH |
2730 | while (PerlLIO_close(fd) != 0) { |
2731 | if (errno != EINTR) { | |
2732 | code = -1; | |
2733 | break; | |
2734 | } | |
2735 | PERL_ASYNC_CHECK(); | |
2736 | } | |
2737 | if (code == 0) { | |
2738 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2739 | } | |
2740 | return code; | |
9e353e3b NIS |
2741 | } |
2742 | ||
27da23d5 | 2743 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2744 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2745 | "unix", |
2746 | sizeof(PerlIOUnix), | |
2747 | PERLIO_K_RAW, | |
2748 | PerlIOUnix_pushed, | |
44798d05 | 2749 | PerlIOBase_popped, |
14a5cf38 | 2750 | PerlIOUnix_open, |
86e05cf2 | 2751 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2752 | NULL, |
2753 | PerlIOUnix_fileno, | |
71200d45 | 2754 | PerlIOUnix_dup, |
14a5cf38 JH |
2755 | PerlIOUnix_read, |
2756 | PerlIOBase_unread, | |
2757 | PerlIOUnix_write, | |
2758 | PerlIOUnix_seek, | |
2759 | PerlIOUnix_tell, | |
2760 | PerlIOUnix_close, | |
22569500 NIS |
2761 | PerlIOBase_noop_ok, /* flush */ |
2762 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2763 | PerlIOBase_eof, |
2764 | PerlIOBase_error, | |
2765 | PerlIOBase_clearerr, | |
2766 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2767 | NULL, /* get_base */ |
2768 | NULL, /* get_bufsiz */ | |
2769 | NULL, /* get_ptr */ | |
2770 | NULL, /* get_cnt */ | |
2771 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2772 | }; |
2773 | ||
2774 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2775 | /* |
71200d45 | 2776 | * stdio as a layer |
14a5cf38 | 2777 | */ |
9e353e3b | 2778 | |
313e59c8 NIS |
2779 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2780 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2781 | broken by the last second glibc 2.3 fix | |
2782 | */ | |
2783 | #define STDIO_BUFFER_WRITABLE | |
2784 | #endif | |
2785 | ||
2786 | ||
14a5cf38 JH |
2787 | typedef struct { |
2788 | struct _PerlIO base; | |
22569500 | 2789 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2790 | } PerlIOStdio; |
2791 | ||
2792 | IV | |
f62ce20a | 2793 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2794 | { |
96a5add6 AL |
2795 | PERL_UNUSED_CONTEXT; |
2796 | ||
c4420975 AL |
2797 | if (PerlIOValid(f)) { |
2798 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2799 | if (s) | |
2800 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2801 | } |
2802 | errno = EBADF; | |
2803 | return -1; | |
9e353e3b NIS |
2804 | } |
2805 | ||
766a733e | 2806 | char * |
14a5cf38 JH |
2807 | PerlIOStdio_mode(const char *mode, char *tmode) |
2808 | { | |
de009b76 | 2809 | char * const ret = tmode; |
a0625d38 SR |
2810 | if (mode) { |
2811 | while (*mode) { | |
2812 | *tmode++ = *mode++; | |
2813 | } | |
14a5cf38 | 2814 | } |
95005ad8 | 2815 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2816 | *tmode++ = 'b'; |
2817 | #endif | |
14a5cf38 JH |
2818 | *tmode = '\0'; |
2819 | return ret; | |
2820 | } | |
2821 | ||
4b803d04 | 2822 | IV |
2dc2558e | 2823 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2824 | { |
1fd8f4ce NIS |
2825 | PerlIO *n; |
2826 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2827 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2828 | if (toptab == tab) { |
2829 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2830 | PerlIO_pop(aTHX_ f); | |
2831 | return 0; | |
2832 | } else { | |
de009b76 | 2833 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2834 | char tmode[8]; |
2835 | FILE *stdio; | |
81428673 | 2836 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2837 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2838 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2839 | /* We never call down so do any pending stuff now */ | |
2840 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2841 | } |
1fd8f4ce NIS |
2842 | else { |
2843 | return -1; | |
2844 | } | |
2845 | } | |
14a5cf38 | 2846 | } |
2dc2558e | 2847 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2848 | } |
2849 | ||
22569500 | 2850 | |
9e353e3b | 2851 | PerlIO * |
4b069b44 | 2852 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2853 | { |
14a5cf38 JH |
2854 | dTHX; |
2855 | PerlIO *f = NULL; | |
2856 | if (stdio) { | |
22569500 | 2857 | PerlIOStdio *s; |
4b069b44 NIS |
2858 | if (!mode || !*mode) { |
2859 | /* We need to probe to see how we can open the stream | |
2860 | so start with read/write and then try write and read | |
2861 | we dup() so that we can fclose without loosing the fd. | |
2862 | ||
2863 | Note that the errno value set by a failing fdopen | |
2864 | varies between stdio implementations. | |
2865 | */ | |
de009b76 | 2866 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2867 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2868 | if (!f2) { |
a33cf58c | 2869 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2870 | } |
2871 | if (!f2) { | |
a33cf58c | 2872 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2873 | } |
2874 | if (!f2) { | |
2875 | /* Don't seem to be able to open */ | |
2876 | PerlLIO_close(fd); | |
2877 | return f; | |
2878 | } | |
2879 | fclose(f2); | |
22569500 | 2880 | } |
a0714e2c | 2881 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2882 | s = PerlIOSelf(f, PerlIOStdio); |
2883 | s->stdio = stdio; | |
c586124f | 2884 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2885 | } |
14a5cf38 JH |
2886 | } |
2887 | return f; | |
9e353e3b NIS |
2888 | } |
2889 | ||
2890 | PerlIO * | |
14a5cf38 JH |
2891 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2892 | IV n, const char *mode, int fd, int imode, | |
2893 | int perm, PerlIO *f, int narg, SV **args) | |
2894 | { | |
2895 | char tmode[8]; | |
d9dac8cd | 2896 | if (PerlIOValid(f)) { |
dcda55fc AL |
2897 | const char * const path = SvPV_nolen_const(*args); |
2898 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2899 | FILE *stdio; |
2900 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2901 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2902 | s->stdio); |
2903 | if (!s->stdio) | |
2904 | return NULL; | |
2905 | s->stdio = stdio; | |
1751d015 | 2906 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2907 | return f; |
2908 | } | |
2909 | else { | |
2910 | if (narg > 0) { | |
dcda55fc | 2911 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2912 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2913 | mode++; |
2914 | fd = PerlLIO_open3(path, imode, perm); | |
2915 | } | |
2916 | else { | |
95005ad8 GH |
2917 | FILE *stdio; |
2918 | bool appended = FALSE; | |
2919 | #ifdef __CYGWIN__ | |
2920 | /* Cygwin wants its 'b' early. */ | |
2921 | appended = TRUE; | |
2922 | mode = PerlIOStdio_mode(mode, tmode); | |
2923 | #endif | |
2924 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2925 | if (stdio) { |
6f0313ac JH |
2926 | if (!f) { |
2927 | f = PerlIO_allocate(aTHX); | |
2928 | } | |
95005ad8 GH |
2929 | if (!appended) |
2930 | mode = PerlIOStdio_mode(mode, tmode); | |
2931 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2932 | if (f) { | |
0f0f9e2b JH |
2933 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2934 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
2935 | } else { | |
2936 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
2937 | } |
2938 | return f; | |
2939 | } | |
2940 | else { | |
2941 | return NULL; | |
2942 | } | |
14a5cf38 JH |
2943 | } |
2944 | } | |
2945 | if (fd >= 0) { | |
2946 | FILE *stdio = NULL; | |
2947 | int init = 0; | |
3b6c1aba | 2948 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2949 | init = 1; |
2950 | mode++; | |
2951 | } | |
2952 | if (init) { | |
2953 | switch (fd) { | |
2954 | case 0: | |
2955 | stdio = PerlSIO_stdin; | |
2956 | break; | |
2957 | case 1: | |
2958 | stdio = PerlSIO_stdout; | |
2959 | break; | |
2960 | case 2: | |
2961 | stdio = PerlSIO_stderr; | |
2962 | break; | |
2963 | } | |
2964 | } | |
2965 | else { | |
2966 | stdio = PerlSIO_fdopen(fd, mode = | |
2967 | PerlIOStdio_mode(mode, tmode)); | |
2968 | } | |
2969 | if (stdio) { | |
d9dac8cd NIS |
2970 | if (!f) { |
2971 | f = PerlIO_allocate(aTHX); | |
2972 | } | |
a33cf58c | 2973 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
2974 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2975 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 2976 | } |
14a5cf38 JH |
2977 | return f; |
2978 | } | |
2979 | } | |
2980 | } | |
ee518936 | 2981 | return NULL; |
9e353e3b NIS |
2982 | } |
2983 | ||
1751d015 | 2984 | PerlIO * |
ecdeb87c | 2985 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
2986 | { |
2987 | /* This assumes no layers underneath - which is what | |
2988 | happens, but is not how I remember it. NI-S 2001/10/16 | |
2989 | */ | |
ecdeb87c | 2990 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 2991 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 2992 | const int fd = fileno(stdio); |
9217ff3f | 2993 | char mode[8]; |
ecdeb87c | 2994 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 2995 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
2996 | if (dfd >= 0) { |
2997 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
2998 | goto set_this; | |
ecdeb87c NIS |
2999 | } |
3000 | else { | |
6f207bd3 | 3001 | NOOP; |
ecdeb87c NIS |
3002 | /* FIXME: To avoid messy error recovery if dup fails |
3003 | re-use the existing stdio as though flag was not set | |
3004 | */ | |
3005 | } | |
3006 | } | |
9217ff3f NIS |
3007 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3008 | set_this: | |
694c95cf JH |
3009 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3010 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
1751d015 NIS |
3011 | } |
3012 | return f; | |
3013 | } | |
3014 | ||
0d7a5398 NIS |
3015 | static int |
3016 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3017 | { | |
96a5add6 AL |
3018 | PERL_UNUSED_CONTEXT; |
3019 | ||
0d7a5398 | 3020 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3021 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3022 | */ |
ef8eacb8 AT |
3023 | # if defined(__UCLIBC__) |
3024 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3025 | f->__filedes = -1; | |
3026 | return 1; | |
3027 | # elif defined(__GLIBC__) | |
0d7a5398 | 3028 | /* There may be a better way for GLIBC: |
37725cdc | 3029 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3030 | */ |
3031 | f->_fileno = -1; | |
3032 | return 1; | |
3033 | # elif defined(__sun__) | |
f5992bc4 | 3034 | PERL_UNUSED_ARG(f); |
cfedb851 | 3035 | return 0; |
0d7a5398 NIS |
3036 | # elif defined(__hpux) |
3037 | f->__fileH = 0xff; | |
3038 | f->__fileL = 0xff; | |
3039 | return 1; | |
9837d373 | 3040 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3041 | your platform does not have special entry try this one. |
9837d373 NIS |
3042 | [For OSF only have confirmation for Tru64 (alpha) |
3043 | but assume other OSFs will be similar.] | |
37725cdc | 3044 | */ |
9837d373 | 3045 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3046 | f->_file = -1; |
3047 | return 1; | |
3048 | # elif defined(__FreeBSD__) | |
3049 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3050 | - we could insert a dummy func in the _close function entry |
3051 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3052 | */ |
3053 | f->_file = -1; | |
0c49ea6a SU |
3054 | return 1; |
3055 | # elif defined(__OpenBSD__) | |
3056 | /* There may be a better way on OpenBSD: | |
3057 | - we could insert a dummy func in the _close function entry | |
3058 | f->_close = (int (*)(void *)) dummy_close; | |
3059 | */ | |
3060 | f->_file = -1; | |
0d7a5398 | 3061 | return 1; |
59ad941d IZ |
3062 | # elif defined(__EMX__) |
3063 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3064 | f->_handle = -1; | |
3065 | return 1; | |
0d7a5398 NIS |
3066 | # elif defined(__CYGWIN__) |
3067 | /* There may be a better way on CYGWIN: | |
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; | |
3072 | return 1; | |
3073 | # elif defined(WIN32) | |
3074 | # if defined(__BORLANDC__) | |
3075 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3076 | # elif defined(UNDER_CE) |
3077 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3078 | structure at all | |
3079 | */ | |
0d7a5398 NIS |
3080 | # else |
3081 | f->_file = -1; | |
3082 | # endif | |
3083 | return 1; | |
3084 | # else | |
3085 | #if 0 | |
37725cdc | 3086 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3087 | (which isn't thread safe) instead |
37725cdc | 3088 | */ |
0d7a5398 NIS |
3089 | # error "Don't know how to set FILE.fileno on your platform" |
3090 | #endif | |
8772537c | 3091 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3092 | return 0; |
3093 | # endif | |
3094 | } | |
3095 | ||
1751d015 | 3096 | IV |
f62ce20a | 3097 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3098 | { |
c4420975 | 3099 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3100 | if (!stdio) { |
3101 | errno = EBADF; | |
3102 | return -1; | |
3103 | } | |
9217ff3f | 3104 | else { |
de009b76 | 3105 | const int fd = fileno(stdio); |
0d7a5398 | 3106 | int invalidate = 0; |
bbfd922f | 3107 | IV result = 0; |
0d7a5398 NIS |
3108 | int saveerr = 0; |
3109 | int dupfd = 0; | |
3110 | #ifdef SOCKS5_VERSION_NAME | |
37725cdc NIS |
3111 | /* Socks lib overrides close() but stdio isn't linked to |
3112 | that library (though we are) - so we must call close() | |
3113 | on sockets on stdio's behalf. | |
3114 | */ | |
0d7a5398 NIS |
3115 | int optval; |
3116 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3117 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3118 | invalidate = 1; |
0d7a5398 | 3119 | #endif |
6b4ce6c8 | 3120 | if (PerlIOUnix_refcnt_dec(fd) > 0) /* File descriptor still in use */ |
0d7a5398 | 3121 | invalidate = 1; |
0d7a5398 | 3122 | if (invalidate) { |
6b4ce6c8 AL |
3123 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3124 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3125 | return 0; | |
3126 | if (stdio == stdout || stdio == stderr) | |
3127 | return PerlIO_flush(f); | |
37725cdc NIS |
3128 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3129 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3130 | fileno slot of the FILE * | |
3131 | */ | |
bbfd922f | 3132 | result = PerlIO_flush(f); |
0d7a5398 | 3133 | saveerr = errno; |
6b4ce6c8 AL |
3134 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
3135 | if (!invalidate) | |
3136 | dupfd = PerlLIO_dup(fd); | |
37725cdc | 3137 | } |
0d7a5398 | 3138 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3139 | /* We treat error from stdio as success if we invalidated |
3140 | errno may NOT be expected EBADF | |
e8529473 NIS |
3141 | */ |
3142 | if (invalidate && result != 0) { | |
0d7a5398 NIS |
3143 | errno = saveerr; |
3144 | result = 0; | |
37725cdc | 3145 | } |
6b4ce6c8 AL |
3146 | #ifdef SOCKS5_VERSION_NAME |
3147 | /* in SOCKS' case, let close() determine return value */ | |
3148 | result = close(fd); | |
3149 | #endif | |
0d7a5398 NIS |
3150 | if (dupfd) { |
3151 | PerlLIO_dup2(dupfd,fd); | |
8a521f28 | 3152 | PerlLIO_close(dupfd); |
9217ff3f NIS |
3153 | } |
3154 | return result; | |
37725cdc | 3155 | } |
1751d015 NIS |
3156 | } |
3157 | ||
9e353e3b | 3158 | SSize_t |
f62ce20a | 3159 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3160 | { |
97aff369 | 3161 | dVAR; |
c4420975 | 3162 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3163 | SSize_t got = 0; |
4d948241 NIS |
3164 | for (;;) { |
3165 | if (count == 1) { | |
3166 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3167 | /* | |
3168 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3169 | * stdio does not do that for fread() | |
3170 | */ | |
de009b76 | 3171 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3172 | if (ch != EOF) { |
3173 | *buf = ch; | |
3174 | got = 1; | |
3175 | } | |
14a5cf38 | 3176 | } |
4d948241 NIS |
3177 | else |
3178 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3179 | if (got == 0 && PerlSIO_ferror(s)) |
3180 | got = -1; | |
42a7a32f | 3181 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3182 | break; |
3183 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3184 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3185 | } |
14a5cf38 | 3186 | return got; |
9e353e3b NIS |
3187 | } |
3188 | ||
3189 | SSize_t | |
f62ce20a | 3190 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3191 | { |
14a5cf38 | 3192 | SSize_t unread = 0; |
c4420975 | 3193 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3194 | |
313e59c8 | 3195 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3196 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3197 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3198 | STDCHAR *base = PerlIO_get_base(f); | |
3199 | SSize_t cnt = PerlIO_get_cnt(f); | |
3200 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3201 | SSize_t avail = ptr - base; | |
3202 | if (avail > 0) { | |
3203 | if (avail > count) { | |
3204 | avail = count; | |
3205 | } | |
3206 | ptr -= avail; | |
3207 | Move(buf-avail,ptr,avail,STDCHAR); | |
3208 | count -= avail; | |
3209 | unread += avail; | |
3210 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3211 | if (PerlSIO_feof(s) && unread >= 0) |
3212 | PerlSIO_clearerr(s); | |
3213 | } | |
3214 | } | |
313e59c8 NIS |
3215 | else |
3216 | #endif | |
3217 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3218 | /* We can get pointer to buffer but not its base |
3219 | Do ungetc() but check chars are ending up in the | |
3220 | buffer | |
3221 | */ | |
3222 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3223 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3224 | while (count > 0) { | |
de009b76 | 3225 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3226 | if (ungetc(ch,s) != ch) { |
3227 | /* ungetc did not work */ | |
3228 | break; | |
3229 | } | |
3230 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3231 | /* Did not change pointer as expected */ | |
3232 | fgetc(s); /* get char back again */ | |
3233 | break; | |
3234 | } | |
3235 | /* It worked ! */ | |
3236 | count--; | |
3237 | unread++; | |
93679785 NIS |
3238 | } |
3239 | } | |
3240 | ||
3241 | if (count > 0) { | |
3242 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3243 | } |
3244 | return unread; | |
9e353e3b NIS |
3245 | } |
3246 | ||
3247 | SSize_t | |
f62ce20a | 3248 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3249 | { |
97aff369 | 3250 | dVAR; |
4d948241 NIS |
3251 | SSize_t got; |
3252 | for (;;) { | |
3253 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3254 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3255 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3256 | break; |
3257 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3258 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3259 | } |
3260 | return got; | |
9e353e3b NIS |
3261 | } |
3262 | ||
94a175e1 | 3263 | IV |
f62ce20a | 3264 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3265 | { |
c4420975 | 3266 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3267 | PERL_UNUSED_CONTEXT; |
3268 | ||
94a175e1 | 3269 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3270 | } |
3271 | ||
3272 | Off_t | |
f62ce20a | 3273 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3274 | { |
c4420975 | 3275 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3276 | PERL_UNUSED_CONTEXT; |
3277 | ||
94a175e1 | 3278 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3279 | } |
3280 | ||
3281 | IV | |
f62ce20a | 3282 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3283 | { |
c4420975 | 3284 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3285 | PERL_UNUSED_CONTEXT; |
3286 | ||
14a5cf38 JH |
3287 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3288 | return PerlSIO_fflush(stdio); | |
3289 | } | |
3290 | else { | |
6f207bd3 | 3291 | NOOP; |
88b61e10 | 3292 | #if 0 |
14a5cf38 JH |
3293 | /* |
3294 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3295 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3296 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3297 | * layer read-to-read |
14a5cf38 JH |
3298 | */ |
3299 | /* | |
71200d45 | 3300 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3301 | */ |
79852593 | 3302 | const int err = errno; |
14a5cf38 JH |
3303 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
3304 | errno = err; | |
88b61e10 | 3305 | #endif |
14a5cf38 JH |
3306 | } |
3307 | return 0; | |
9e353e3b NIS |
3308 | } |
3309 | ||
3310 | IV | |
f62ce20a | 3311 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3312 | { |
96a5add6 AL |
3313 | PERL_UNUSED_CONTEXT; |
3314 | ||
14a5cf38 | 3315 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3316 | } |
3317 | ||
3318 | IV | |
f62ce20a | 3319 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3320 | { |
96a5add6 AL |
3321 | PERL_UNUSED_CONTEXT; |
3322 | ||
263df5f1 | 3323 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3324 | } |
3325 | ||
3326 | void | |
f62ce20a | 3327 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3328 | { |
96a5add6 AL |
3329 | PERL_UNUSED_CONTEXT; |
3330 | ||
14a5cf38 | 3331 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3332 | } |
3333 | ||
3334 | void | |
f62ce20a | 3335 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3336 | { |
96a5add6 AL |
3337 | PERL_UNUSED_CONTEXT; |
3338 | ||
9e353e3b | 3339 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3340 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3341 | #else |
bd61b366 | 3342 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3343 | #endif |
3344 | } | |
3345 | ||
3346 | #ifdef FILE_base | |
3347 | STDCHAR * | |
f62ce20a | 3348 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3349 | { |
c4420975 | 3350 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3351 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3352 | } |
3353 | ||
3354 | Size_t | |
f62ce20a | 3355 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3356 | { |
c4420975 | 3357 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3358 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3359 | } |
3360 | #endif | |
3361 | ||
3362 | #ifdef USE_STDIO_PTR | |
3363 | STDCHAR * | |
f62ce20a | 3364 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3365 | { |
c4420975 | 3366 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3367 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3368 | } |
3369 | ||
3370 | SSize_t | |
f62ce20a | 3371 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3372 | { |
c4420975 | 3373 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3374 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3375 | } |
3376 | ||
3377 | void | |
f62ce20a | 3378 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3379 | { |
c4420975 | 3380 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3381 | if (ptr != NULL) { |
9e353e3b | 3382 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3383 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3384 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
14a5cf38 | 3385 | if (PerlSIO_get_cnt(stdio) != (cnt)) { |
14a5cf38 JH |
3386 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
3387 | } | |
9e353e3b NIS |
3388 | #endif |
3389 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3390 | /* |
71200d45 | 3391 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3392 | */ |
3393 | return; | |
9e353e3b | 3394 | #endif |
22569500 | 3395 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3396 | PerlProc_abort(); |
22569500 | 3397 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3398 | } |
3399 | /* | |
71200d45 | 3400 | * Now (or only) set cnt |
14a5cf38 | 3401 | */ |
9e353e3b | 3402 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3403 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3404 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3405 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3406 | PerlSIO_set_ptr(stdio, |
3407 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3408 | cnt)); | |
22569500 | 3409 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3410 | PerlProc_abort(); |
22569500 NIS |
3411 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3412 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3413 | } |
3414 | ||
93679785 | 3415 | |
9e353e3b NIS |
3416 | #endif |
3417 | ||
93679785 NIS |
3418 | IV |
3419 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3420 | { | |
c4420975 | 3421 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3422 | int c; |
96a5add6 AL |
3423 | PERL_UNUSED_CONTEXT; |
3424 | ||
93679785 NIS |
3425 | /* |
3426 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3427 | */ | |
3428 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3429 | if (PerlSIO_fflush(stdio) != 0) | |
3430 | return EOF; | |
3431 | } | |
f3be3723 BL |
3432 | for (;;) { |
3433 | c = PerlSIO_fgetc(stdio); | |
3434 | if (c != EOF) | |
3435 | break; | |
3436 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3437 | return EOF; | |
3438 | PERL_ASYNC_CHECK(); | |
3439 | SETERRNO(0,0); | |
3440 | } | |
93679785 NIS |
3441 | |
3442 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3443 | |
3444 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3445 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3446 | /* Fake ungetc() to the real buffer in case system's ungetc |
3447 | goes elsewhere | |
3448 | */ | |
3449 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3450 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3451 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3452 | if (ptr == base+1) { | |
3453 | *--ptr = (STDCHAR) c; | |
3454 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3455 | if (PerlSIO_feof(stdio)) | |
3456 | PerlSIO_clearerr(stdio); | |
3457 | return 0; | |
3458 | } | |
3459 | } | |
313e59c8 NIS |
3460 | else |
3461 | #endif | |
3462 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3463 | STDCHAR ch = c; |
3464 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3465 | return 0; | |
3466 | } | |
3467 | } | |
93679785 NIS |
3468 | #endif |
3469 | ||
3470 | #if defined(VMS) | |
3471 | /* An ungetc()d char is handled separately from the regular | |
3472 | * buffer, so we stuff it in the buffer ourselves. | |
3473 | * Should never get called as should hit code above | |
3474 | */ | |
bad9695d NIS |
3475 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3476 | (*stdio)->_cnt++; | |
93679785 NIS |
3477 | #else |
3478 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3479 | using ungetc(). |
93679785 NIS |
3480 | */ |
3481 | if (PerlSIO_ungetc(c, stdio) != c) | |
3482 | return EOF; | |
3483 | #endif | |
3484 | return 0; | |
3485 | } | |
3486 | ||
3487 | ||
3488 | ||
27da23d5 | 3489 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3490 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3491 | "stdio", |
3492 | sizeof(PerlIOStdio), | |
86e05cf2 | 3493 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3494 | PerlIOStdio_pushed, |
44798d05 | 3495 | PerlIOBase_popped, |
14a5cf38 | 3496 | PerlIOStdio_open, |
86e05cf2 | 3497 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3498 | NULL, |
3499 | PerlIOStdio_fileno, | |
71200d45 | 3500 | PerlIOStdio_dup, |
14a5cf38 JH |
3501 | PerlIOStdio_read, |
3502 | PerlIOStdio_unread, | |
3503 | PerlIOStdio_write, | |
3504 | PerlIOStdio_seek, | |
3505 | PerlIOStdio_tell, | |
3506 | PerlIOStdio_close, | |
3507 | PerlIOStdio_flush, | |
3508 | PerlIOStdio_fill, | |
3509 | PerlIOStdio_eof, | |
3510 | PerlIOStdio_error, | |
3511 | PerlIOStdio_clearerr, | |
3512 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3513 | #ifdef FILE_base |
14a5cf38 JH |
3514 | PerlIOStdio_get_base, |
3515 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3516 | #else |
14a5cf38 JH |
3517 | NULL, |
3518 | NULL, | |
9e353e3b NIS |
3519 | #endif |
3520 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3521 | PerlIOStdio_get_ptr, |
3522 | PerlIOStdio_get_cnt, | |
15b61c98 | 3523 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3524 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3525 | # else |
3526 | NULL, | |
3527 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3528 | #else | |
3529 | NULL, | |
14a5cf38 JH |
3530 | NULL, |
3531 | NULL, | |
15b61c98 | 3532 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3533 | }; |
3534 | ||
b9d6bf13 JH |
3535 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3536 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3537 | FILE * |
81428673 | 3538 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3539 | { |
e87a358a | 3540 | dTHX; |
81428673 NIS |
3541 | FILE *stdio = NULL; |
3542 | if (PerlIOValid(f)) { | |
3543 | char buf[8]; | |
3544 | PerlIO_flush(f); | |
3545 | if (!mode || !*mode) { | |
3546 | mode = PerlIO_modestr(f, buf); | |
3547 | } | |
3548 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3549 | if (stdio) { | |
3550 | PerlIOl *l = *f; | |
9f75cc58 | 3551 | PerlIO *f2; |
81428673 NIS |
3552 | /* De-link any lower layers so new :stdio sticks */ |
3553 | *f = NULL; | |
a0714e2c | 3554 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3555 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3556 | s->stdio = stdio; |
6b54a403 | 3557 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3558 | /* Link previous lower layers under new one */ |
3559 | *PerlIONext(f) = l; | |
3560 | } | |
3561 | else { | |
3562 | /* restore layers list */ | |
3563 | *f = l; | |
3564 | } | |
a33cf58c | 3565 | } |
14a5cf38 JH |
3566 | } |
3567 | return stdio; | |
9e353e3b NIS |
3568 | } |
3569 | ||
81428673 | 3570 | |
9e353e3b NIS |
3571 | FILE * |
3572 | PerlIO_findFILE(PerlIO *f) | |
3573 | { | |
14a5cf38 JH |
3574 | PerlIOl *l = *f; |
3575 | while (l) { | |
3576 | if (l->tab == &PerlIO_stdio) { | |
3577 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3578 | return s->stdio; | |
3579 | } | |
3580 | l = *PerlIONext(&l); | |
f7e7eb72 | 3581 | } |
4b069b44 | 3582 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bd61b366 | 3583 | return PerlIO_exportFILE(f, NULL); |
9e353e3b NIS |
3584 | } |
3585 | ||
b9d6bf13 | 3586 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3587 | void |
3588 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3589 | { | |
27da23d5 | 3590 | dVAR; |
22569500 NIS |
3591 | PerlIOl *l; |
3592 | while ((l = *p)) { | |
3593 | if (l->tab == &PerlIO_stdio) { | |
3594 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3595 | if (s->stdio == f) { | |
3596 | dTHX; | |
6b54a403 NC |
3597 | const int fd = fileno(f); |
3598 | if (fd >= 0) | |
3599 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3600 | PerlIO_pop(aTHX_ p); |
3601 | return; | |
3602 | } | |
3603 | } | |
3604 | p = PerlIONext(p); | |
3605 | } | |
3606 | return; | |
9e353e3b NIS |
3607 | } |
3608 | ||
3609 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3610 | /* |
71200d45 | 3611 | * perlio buffer layer |
14a5cf38 | 3612 | */ |
9e353e3b | 3613 | |
5e2ab84b | 3614 | IV |
2dc2558e | 3615 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3616 | { |
14a5cf38 | 3617 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3618 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3619 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3620 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3621 | } | |
4b069b44 | 3622 | if (*PerlIONext(f)) { |
de009b76 | 3623 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3624 | if (posn != (Off_t) - 1) { |
3625 | b->posn = posn; | |
3626 | } | |
14a5cf38 | 3627 | } |
2dc2558e | 3628 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3629 | } |
3630 | ||
9e353e3b | 3631 | PerlIO * |
14a5cf38 JH |
3632 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3633 | IV n, const char *mode, int fd, int imode, int perm, | |
3634 | PerlIO *f, int narg, SV **args) | |
3635 | { | |
04892f78 | 3636 | if (PerlIOValid(f)) { |
14a5cf38 | 3637 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3638 | PerlIO_funcs *tab = |
3639 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3640 | if (tab && tab->Open) | |
3641 | next = | |
3642 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3643 | next, narg, args); | |
2dc2558e | 3644 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3645 | return NULL; |
3646 | } | |
3647 | } | |
3648 | else { | |
04892f78 | 3649 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3650 | int init = 0; |
3b6c1aba | 3651 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3652 | init = 1; |
3653 | /* | |
71200d45 | 3654 | * mode++; |
14a5cf38 JH |
3655 | */ |
3656 | } | |
67363c0d JH |
3657 | if (tab && tab->Open) |
3658 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3659 | f, narg, args); | |
3660 | else | |
3661 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3662 | if (f) { |
22569500 | 3663 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3664 | /* |
3665 | * if push fails during open, open fails. close will pop us. | |
3666 | */ | |
3667 | PerlIO_close (f); | |
3668 | return NULL; | |
3669 | } else { | |
3670 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3671 | if (init && fd == 2) { |
3672 | /* | |
3673 | * Initial stderr is unbuffered | |
3674 | */ | |
3675 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3676 | } | |
23b84778 IZ |
3677 | #ifdef PERLIO_USING_CRLF |
3678 | # ifdef PERLIO_IS_BINMODE_FD | |
3679 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3680 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3681 | else |
3682 | # endif | |
3683 | /* | |
3684 | * do something about failing setmode()? --jhi | |
3685 | */ | |
3686 | PerlLIO_setmode(fd, O_BINARY); | |
3687 | #endif | |
14a5cf38 JH |
3688 | } |
3689 | } | |
ee518936 | 3690 | } |
14a5cf38 | 3691 | return f; |
9e353e3b NIS |
3692 | } |
3693 | ||
14a5cf38 JH |
3694 | /* |
3695 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3696 | * read or write state. For write state, we put the postponed data through |
3697 | * the next layers. For read state, we seek() the next layers to the | |
3698 | * offset given by current position in the buffer, and discard the buffer | |
3699 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3700 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3701 | */ |
9e353e3b | 3702 | IV |
f62ce20a | 3703 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3704 | { |
dcda55fc | 3705 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3706 | int code = 0; |
04892f78 | 3707 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3708 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3709 | /* | |
71200d45 | 3710 | * write() the buffer |
14a5cf38 | 3711 | */ |
de009b76 AL |
3712 | const STDCHAR *buf = b->buf; |
3713 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3714 | while (p < b->ptr) { |
3715 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3716 | if (count > 0) { | |
3717 | p += count; | |
3718 | } | |
3719 | else if (count < 0 || PerlIO_error(n)) { | |
3720 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3721 | code = -1; | |
3722 | break; | |
3723 | } | |
3724 | } | |
3725 | b->posn += (p - buf); | |
3726 | } | |
3727 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3728 | STDCHAR *buf = PerlIO_get_base(f); | |
3729 | /* | |
71200d45 | 3730 | * Note position change |
14a5cf38 JH |
3731 | */ |
3732 | b->posn += (b->ptr - buf); | |
3733 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3734 | /* We did not consume all of it - try and seek downstream to |
3735 | our logical position | |
14a5cf38 | 3736 | */ |
4b069b44 | 3737 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3738 | /* Reload n as some layers may pop themselves on seek */ |
3739 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3740 | } |
ba5c3fe9 | 3741 | else { |
4b069b44 NIS |
3742 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3743 | data is lost for good - so return saying "ok" having undone | |
3744 | the position adjust | |
3745 | */ | |
3746 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3747 | return code; |
3748 | } | |
14a5cf38 JH |
3749 | } |
3750 | } | |
3751 | b->ptr = b->end = b->buf; | |
3752 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3753 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3754 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3755 | code = -1; |
3756 | return code; | |
6f9d8c32 NIS |
3757 | } |
3758 | ||
93c2c2ec IZ |
3759 | /* This discards the content of the buffer after b->ptr, and rereads |
3760 | * the buffer from the position off in the layer downstream; here off | |
3761 | * is at offset corresponding to b->ptr - b->buf. | |
3762 | */ | |
06da4f11 | 3763 | IV |
f62ce20a | 3764 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3765 | { |
dcda55fc | 3766 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3767 | PerlIO *n = PerlIONext(f); |
3768 | SSize_t avail; | |
3769 | /* | |
4b069b44 NIS |
3770 | * Down-stream flush is defined not to loose read data so is harmless. |
3771 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3772 | */ |
93c2c2ec | 3773 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3774 | return -1; |
3775 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3776 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3777 | |
3778 | if (!b->buf) | |
22569500 | 3779 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3780 | |
0f0eef27 | 3781 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3782 | |
14a5cf38 | 3783 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3784 | |
3785 | if (!PerlIOValid(n)) { | |
3786 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3787 | return -1; | |
3788 | } | |
3789 | ||
14a5cf38 JH |
3790 | if (PerlIO_fast_gets(n)) { |
3791 | /* | |
04892f78 | 3792 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3793 | * ->Read() because that will loop till it gets what we asked for |
3794 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3795 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3796 | */ |
3797 | avail = PerlIO_get_cnt(n); | |
3798 | if (avail <= 0) { | |
3799 | avail = PerlIO_fill(n); | |
3800 | if (avail == 0) | |
3801 | avail = PerlIO_get_cnt(n); | |
3802 | else { | |
3803 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3804 | avail = 0; | |
3805 | } | |
3806 | } | |
3807 | if (avail > 0) { | |
3808 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3809 | const SSize_t cnt = avail; |
eb160463 | 3810 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3811 | avail = b->bufsiz; |
3812 | Copy(ptr, b->buf, avail, STDCHAR); | |
3813 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3814 | } | |
3815 | } | |
3816 | else { | |
3817 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3818 | } | |
3819 | if (avail <= 0) { | |
3820 | if (avail == 0) | |
3821 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3822 | else | |
3823 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3824 | return -1; | |
3825 | } | |
3826 | b->end = b->buf + avail; | |
3827 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3828 | return 0; | |
06da4f11 NIS |
3829 | } |
3830 | ||
6f9d8c32 | 3831 | SSize_t |
f62ce20a | 3832 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3833 | { |
04892f78 | 3834 | if (PerlIOValid(f)) { |
dcda55fc | 3835 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3836 | if (!b->ptr) |
3837 | PerlIO_get_base(f); | |
f62ce20a | 3838 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3839 | } |
3840 | return 0; | |
6f9d8c32 NIS |
3841 | } |
3842 | ||
9e353e3b | 3843 | SSize_t |
f62ce20a | 3844 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3845 | { |
14a5cf38 | 3846 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3847 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3848 | SSize_t unread = 0; |
3849 | SSize_t avail; | |
3850 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3851 | PerlIO_flush(f); | |
3852 | if (!b->buf) | |
3853 | PerlIO_get_base(f); | |
3854 | if (b->buf) { | |
3855 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3856 | /* | |
3857 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3858 | * which have been read back to buffer start |
14a5cf38 JH |
3859 | */ |
3860 | avail = (b->ptr - b->buf); | |
3861 | } | |
3862 | else { | |
3863 | /* | |
3864 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3865 | * unread |
14a5cf38 JH |
3866 | */ |
3867 | avail = b->bufsiz; | |
3868 | b->end = b->buf + avail; | |
3869 | b->ptr = b->end; | |
3870 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3871 | /* | |
71200d45 | 3872 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3873 | */ |
3874 | b->posn -= b->bufsiz; | |
3875 | } | |
3876 | if (avail > (SSize_t) count) { | |
3877 | /* | |
71200d45 | 3878 | * If we have space for more than count, just move count |
14a5cf38 JH |
3879 | */ |
3880 | avail = count; | |
3881 | } | |
3882 | if (avail > 0) { | |
3883 | b->ptr -= avail; | |
3884 | buf -= avail; | |
3885 | /* | |
3886 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3887 | * there |
14a5cf38 JH |
3888 | */ |
3889 | if (buf != b->ptr) { | |
3890 | Copy(buf, b->ptr, avail, STDCHAR); | |
3891 | } | |
3892 | count -= avail; | |
3893 | unread += avail; | |
3894 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3895 | } | |
3896 | } | |
93679785 NIS |
3897 | if (count > 0) { |
3898 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3899 | } | |
14a5cf38 | 3900 | return unread; |
760ac839 LW |
3901 | } |
3902 | ||
9e353e3b | 3903 | SSize_t |
f62ce20a | 3904 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3905 | { |
de009b76 | 3906 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3907 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3908 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3909 | Size_t written = 0; |
3910 | if (!b->buf) | |
3911 | PerlIO_get_base(f); | |
3912 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3913 | return 0; | |
0678cb22 NIS |
3914 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3915 | if (PerlIO_flush(f) != 0) { | |
3916 | return 0; | |
3917 | } | |
3918 | } | |
ee56a6b9 CS |
3919 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
3920 | flushptr = buf + count; | |
3921 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
3922 | --flushptr; | |
3923 | } | |
14a5cf38 JH |
3924 | while (count > 0) { |
3925 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
3926 | if ((SSize_t) count < avail) | |
3927 | avail = count; | |
ee56a6b9 CS |
3928 | if (flushptr > buf && flushptr <= buf + avail) |
3929 | avail = flushptr - buf; | |
14a5cf38 | 3930 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
3931 | if (avail) { |
3932 | Copy(buf, b->ptr, avail, STDCHAR); | |
3933 | count -= avail; | |
3934 | buf += avail; | |
3935 | written += avail; | |
3936 | b->ptr += avail; | |
3937 | if (buf == flushptr) | |
3938 | PerlIO_flush(f); | |
14a5cf38 JH |
3939 | } |
3940 | if (b->ptr >= (b->buf + b->bufsiz)) | |
3941 | PerlIO_flush(f); | |
3942 | } | |
3943 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
3944 | PerlIO_flush(f); | |
3945 | return written; | |
9e353e3b NIS |
3946 | } |
3947 | ||
94a175e1 | 3948 | IV |
f62ce20a | 3949 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3950 | { |
14a5cf38 JH |
3951 | IV code; |
3952 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
3953 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
3954 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
3955 | if (code == 0) { | |
de009b76 | 3956 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3957 | b->posn = PerlIO_tell(PerlIONext(f)); |
3958 | } | |
9e353e3b | 3959 | } |
14a5cf38 | 3960 | return code; |
9e353e3b NIS |
3961 | } |
3962 | ||
3963 | Off_t | |
f62ce20a | 3964 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 3965 | { |
dcda55fc | 3966 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3967 | /* |
71200d45 | 3968 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
3969 | */ |
3970 | Off_t posn = b->posn; | |
37725cdc | 3971 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
3972 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
3973 | #if 1 | |
3974 | /* As O_APPEND files are normally shared in some sense it is better | |
3975 | to flush : | |
3976 | */ | |
3977 | PerlIO_flush(f); | |
3978 | #else | |
37725cdc | 3979 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
3980 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
3981 | #endif | |
3982 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
3983 | } | |
14a5cf38 JH |
3984 | if (b->buf) { |
3985 | /* | |
71200d45 | 3986 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
3987 | */ |
3988 | posn += (b->ptr - b->buf); | |
3989 | } | |
3990 | return posn; | |
9e353e3b NIS |
3991 | } |
3992 | ||
3993 | IV | |
44798d05 NIS |
3994 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
3995 | { | |
de009b76 AL |
3996 | const IV code = PerlIOBase_popped(aTHX_ f); |
3997 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
3998 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3999 | Safefree(b->buf); | |
4000 | } | |
dcda55fc | 4001 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4002 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4003 | return code; | |
4004 | } | |
4005 | ||
4006 | IV | |
f62ce20a | 4007 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4008 | { |
de009b76 AL |
4009 | const IV code = PerlIOBase_close(aTHX_ f); |
4010 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4011 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4012 | Safefree(b->buf); |
14a5cf38 | 4013 | } |
dcda55fc | 4014 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4015 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4016 | return code; | |
760ac839 LW |
4017 | } |
4018 | ||
9e353e3b | 4019 | STDCHAR * |
f62ce20a | 4020 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4021 | { |
dcda55fc | 4022 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4023 | if (!b->buf) |
4024 | PerlIO_get_base(f); | |
4025 | return b->ptr; | |
9e353e3b NIS |
4026 | } |
4027 | ||
05d1247b | 4028 | SSize_t |
f62ce20a | 4029 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4030 | { |
dcda55fc | 4031 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4032 | if (!b->buf) |
4033 | PerlIO_get_base(f); | |
4034 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4035 | return (b->end - b->ptr); | |
4036 | return 0; | |
9e353e3b NIS |
4037 | } |
4038 | ||
4039 | STDCHAR * | |
f62ce20a | 4040 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4041 | { |
dcda55fc | 4042 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4043 | PERL_UNUSED_CONTEXT; |
4044 | ||
14a5cf38 JH |
4045 | if (!b->buf) { |
4046 | if (!b->bufsiz) | |
4047 | b->bufsiz = 4096; | |
a02a5408 | 4048 | b->buf = Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4049 | if (!b->buf) { |
4050 | b->buf = (STDCHAR *) & b->oneword; | |
4051 | b->bufsiz = sizeof(b->oneword); | |
4052 | } | |
dcda55fc | 4053 | b->end = b->ptr = b->buf; |
06da4f11 | 4054 | } |
14a5cf38 | 4055 | return b->buf; |
9e353e3b NIS |
4056 | } |
4057 | ||
4058 | Size_t | |
f62ce20a | 4059 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4060 | { |
dcda55fc | 4061 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4062 | if (!b->buf) |
4063 | PerlIO_get_base(f); | |
4064 | return (b->end - b->buf); | |
9e353e3b NIS |
4065 | } |
4066 | ||
4067 | void | |
f62ce20a | 4068 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4069 | { |
dcda55fc | 4070 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4071 | if (!b->buf) |
4072 | PerlIO_get_base(f); | |
4073 | b->ptr = ptr; | |
4074 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) { | |
14a5cf38 JH |
4075 | assert(PerlIO_get_cnt(f) == cnt); |
4076 | assert(b->ptr >= b->buf); | |
4077 | } | |
4078 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
760ac839 LW |
4079 | } |
4080 | ||
71200d45 | 4081 | PerlIO * |
ecdeb87c | 4082 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4083 | { |
ecdeb87c | 4084 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4085 | } |
4086 | ||
4087 | ||
4088 | ||
27da23d5 | 4089 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4090 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4091 | "perlio", |
4092 | sizeof(PerlIOBuf), | |
86e05cf2 | 4093 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4094 | PerlIOBuf_pushed, |
44798d05 | 4095 | PerlIOBuf_popped, |
14a5cf38 | 4096 | PerlIOBuf_open, |
86e05cf2 | 4097 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4098 | NULL, |
4099 | PerlIOBase_fileno, | |
71200d45 | 4100 | PerlIOBuf_dup, |
14a5cf38 JH |
4101 | PerlIOBuf_read, |
4102 | PerlIOBuf_unread, | |
4103 | PerlIOBuf_write, | |
4104 | PerlIOBuf_seek, | |
4105 | PerlIOBuf_tell, | |
4106 | PerlIOBuf_close, | |
4107 | PerlIOBuf_flush, | |
4108 | PerlIOBuf_fill, | |
4109 | PerlIOBase_eof, | |
4110 | PerlIOBase_error, | |
4111 | PerlIOBase_clearerr, | |
4112 | PerlIOBase_setlinebuf, | |
4113 | PerlIOBuf_get_base, | |
4114 | PerlIOBuf_bufsiz, | |
4115 | PerlIOBuf_get_ptr, | |
4116 | PerlIOBuf_get_cnt, | |
4117 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4118 | }; |
4119 | ||
66ecd56b | 4120 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4121 | /* |
71200d45 | 4122 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4123 | */ |
5e2ab84b NIS |
4124 | |
4125 | IV | |
f62ce20a | 4126 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4127 | { |
14a5cf38 | 4128 | /* |
71200d45 | 4129 | * Should never happen |
14a5cf38 JH |
4130 | */ |
4131 | PerlIO_flush(f); | |
4132 | return 0; | |
5e2ab84b NIS |
4133 | } |
4134 | ||
4135 | IV | |
f62ce20a | 4136 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4137 | { |
14a5cf38 | 4138 | /* |
71200d45 | 4139 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4140 | */ |
4141 | PerlIO_flush(f); | |
4142 | return PerlIO_close(f); | |
5e2ab84b NIS |
4143 | } |
4144 | ||
94a175e1 | 4145 | IV |
f62ce20a | 4146 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4147 | { |
14a5cf38 | 4148 | /* |
71200d45 | 4149 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4150 | */ |
4151 | PerlIO_flush(f); | |
4152 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4153 | } |
4154 | ||
4155 | ||
4156 | IV | |
f62ce20a | 4157 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4158 | { |
dcda55fc | 4159 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4160 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4161 | Safefree(b->buf); |
14a5cf38 JH |
4162 | b->buf = NULL; |
4163 | } | |
4164 | PerlIO_pop(aTHX_ f); | |
4165 | return 0; | |
5e2ab84b NIS |
4166 | } |
4167 | ||
4168 | void | |
f62ce20a | 4169 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4170 | { |
14a5cf38 JH |
4171 | if (cnt <= 0) { |
4172 | PerlIO_flush(f); | |
4173 | } | |
4174 | else { | |
f62ce20a | 4175 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4176 | } |
5e2ab84b NIS |
4177 | } |
4178 | ||
4179 | IV | |
2dc2558e | 4180 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4181 | { |
de009b76 | 4182 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4183 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4184 | /* |
71200d45 NIS |
4185 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4186 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4187 | */ |
4188 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4189 | (PerlIOBase(PerlIONext(f))-> | |
4190 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4191 | return code; | |
5e2ab84b NIS |
4192 | } |
4193 | ||
4194 | SSize_t | |
f62ce20a | 4195 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4196 | { |
14a5cf38 JH |
4197 | SSize_t avail = PerlIO_get_cnt(f); |
4198 | SSize_t got = 0; | |
eb160463 | 4199 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4200 | avail = count; |
4201 | if (avail > 0) | |
f62ce20a | 4202 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4203 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4204 | const SSize_t more = |
14a5cf38 JH |
4205 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4206 | if (more >= 0 || got == 0) | |
4207 | got += more; | |
4208 | } | |
4209 | return got; | |
5e2ab84b NIS |
4210 | } |
4211 | ||
27da23d5 | 4212 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4213 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4214 | "pending", |
4215 | sizeof(PerlIOBuf), | |
86e05cf2 | 4216 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4217 | PerlIOPending_pushed, |
44798d05 | 4218 | PerlIOBuf_popped, |
14a5cf38 | 4219 | NULL, |
86e05cf2 | 4220 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4221 | NULL, |
4222 | PerlIOBase_fileno, | |
71200d45 | 4223 | PerlIOBuf_dup, |
14a5cf38 JH |
4224 | PerlIOPending_read, |
4225 | PerlIOBuf_unread, | |
4226 | PerlIOBuf_write, | |
4227 | PerlIOPending_seek, | |
4228 | PerlIOBuf_tell, | |
4229 | PerlIOPending_close, | |
4230 | PerlIOPending_flush, | |
4231 | PerlIOPending_fill, | |
4232 | PerlIOBase_eof, | |
4233 | PerlIOBase_error, | |
4234 | PerlIOBase_clearerr, | |
4235 | PerlIOBase_setlinebuf, | |
4236 | PerlIOBuf_get_base, | |
4237 | PerlIOBuf_bufsiz, | |
4238 | PerlIOBuf_get_ptr, | |
4239 | PerlIOBuf_get_cnt, | |
4240 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4241 | }; |
4242 | ||
4243 | ||
4244 | ||
4245 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4246 | /* |
4247 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4248 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4249 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4250 | * |
4251 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4252 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4253 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4254 | * that it ends at c->nl; these two cases can be distinguished by | |
4255 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4256 | * _unread() and _flush() calls. | |
4257 | * It only matters for read operations. | |
66ecd56b NIS |
4258 | */ |
4259 | ||
14a5cf38 | 4260 | typedef struct { |
22569500 NIS |
4261 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4262 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4263 | * buffer */ |
99efab12 NIS |
4264 | } PerlIOCrlf; |
4265 | ||
ff1e3883 JD |
4266 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4267 | * Otherwise the :crlf layer would always revert back to | |
4268 | * raw mode. | |
4269 | */ | |
4270 | static void | |
4271 | S_inherit_utf8_flag(PerlIO *f) | |
4272 | { | |
4273 | PerlIO *g = PerlIONext(f); | |
4274 | if (PerlIOValid(g)) { | |
4275 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4276 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4277 | } | |
4278 | } | |
4279 | } | |
4280 | ||
f5b9d040 | 4281 | IV |
2dc2558e | 4282 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4283 | { |
14a5cf38 JH |
4284 | IV code; |
4285 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4286 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4287 | #if 0 |
14a5cf38 | 4288 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4289 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4290 | PerlIOBase(f)->flags); |
5e2ab84b | 4291 | #endif |
8229d19f JH |
4292 | { |
4293 | /* Enable the first CRLF capable layer you can find, but if none | |
4294 | * found, the one we just pushed is fine. This results in at | |
4295 | * any given moment at most one CRLF-capable layer being enabled | |
4296 | * in the whole layer stack. */ | |
4297 | PerlIO *g = PerlIONext(f); | |
ff1e3883 | 4298 | while (PerlIOValid(g)) { |
8229d19f JH |
4299 | PerlIOl *b = PerlIOBase(g); |
4300 | if (b && b->tab == &PerlIO_crlf) { | |
4301 | if (!(b->flags & PERLIO_F_CRLF)) | |
4302 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4303 | S_inherit_utf8_flag(g); |
8229d19f JH |
4304 | PerlIO_pop(aTHX_ f); |
4305 | return code; | |
4306 | } | |
4307 | g = PerlIONext(g); | |
4308 | } | |
4309 | } | |
ff1e3883 | 4310 | S_inherit_utf8_flag(f); |
14a5cf38 | 4311 | return code; |
f5b9d040 NIS |
4312 | } |
4313 | ||
4314 | ||
99efab12 | 4315 | SSize_t |
f62ce20a | 4316 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4317 | { |
dcda55fc | 4318 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4319 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4320 | *(c->nl) = 0xd; |
4321 | c->nl = NULL; | |
4322 | } | |
4323 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4324 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4325 | else { |
4326 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4327 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4328 | SSize_t unread = 0; | |
4329 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4330 | PerlIO_flush(f); | |
4331 | if (!b->buf) | |
4332 | PerlIO_get_base(f); | |
4333 | if (b->buf) { | |
4334 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4335 | b->end = b->ptr = b->buf + b->bufsiz; | |
4336 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4337 | b->posn -= b->bufsiz; | |
4338 | } | |
4339 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4340 | const int ch = *--buf; |
14a5cf38 JH |
4341 | if (ch == '\n') { |
4342 | if (b->ptr - 2 >= b->buf) { | |
4343 | *--(b->ptr) = 0xa; | |
4344 | *--(b->ptr) = 0xd; | |
4345 | unread++; | |
4346 | count--; | |
4347 | } | |
4348 | else { | |
93c2c2ec IZ |
4349 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4350 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4351 | unread++; | |
4352 | count--; | |
14a5cf38 JH |
4353 | } |
4354 | } | |
4355 | else { | |
4356 | *--(b->ptr) = ch; | |
4357 | unread++; | |
4358 | count--; | |
4359 | } | |
4360 | } | |
4361 | } | |
4362 | return unread; | |
4363 | } | |
99efab12 NIS |
4364 | } |
4365 | ||
93c2c2ec | 4366 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4367 | SSize_t |
f62ce20a | 4368 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4369 | { |
dcda55fc | 4370 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4371 | if (!b->buf) |
4372 | PerlIO_get_base(f); | |
4373 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4374 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4375 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4376 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4377 | scan: |
4378 | while (nl < b->end && *nl != 0xd) | |
4379 | nl++; | |
4380 | if (nl < b->end && *nl == 0xd) { | |
4381 | test: | |
4382 | if (nl + 1 < b->end) { | |
4383 | if (nl[1] == 0xa) { | |
4384 | *nl = '\n'; | |
4385 | c->nl = nl; | |
4386 | } | |
4387 | else { | |
4388 | /* | |
71200d45 | 4389 | * Not CR,LF but just CR |
14a5cf38 JH |
4390 | */ |
4391 | nl++; | |
4392 | goto scan; | |
4393 | } | |
4394 | } | |
4395 | else { | |
4396 | /* | |
71200d45 | 4397 | * Blast - found CR as last char in buffer |
14a5cf38 | 4398 | */ |
e87a358a | 4399 | |
14a5cf38 JH |
4400 | if (b->ptr < nl) { |
4401 | /* | |
4402 | * They may not care, defer work as long as | |
71200d45 | 4403 | * possible |
14a5cf38 | 4404 | */ |
a0d1d361 | 4405 | c->nl = nl; |
14a5cf38 JH |
4406 | return (nl - b->ptr); |
4407 | } | |
4408 | else { | |
4409 | int code; | |
22569500 | 4410 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4411 | * flush() is concerned */ |
22569500 | 4412 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4413 | /* Note as we have moved buf up flush's |
4414 | posn += ptr-buf | |
4415 | will naturally make posn point at CR | |
4416 | */ | |
22569500 NIS |
4417 | b->bufsiz--; /* Buffer is thus smaller */ |
4418 | code = PerlIO_fill(f); /* Fetch some more */ | |
4419 | b->bufsiz++; /* Restore size for next time */ | |
4420 | b->buf--; /* Point at space */ | |
4421 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4422 | * off */ |
22569500 | 4423 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4424 | if (code == 0) |
22569500 | 4425 | goto test; /* fill() call worked */ |
14a5cf38 | 4426 | /* |
71200d45 | 4427 | * CR at EOF - just fall through |
14a5cf38 | 4428 | */ |
a0d1d361 | 4429 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4430 | } |
4431 | } | |
4432 | } | |
4433 | } | |
4434 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4435 | } | |
4436 | return 0; | |
99efab12 NIS |
4437 | } |
4438 | ||
4439 | void | |
f62ce20a | 4440 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4441 | { |
dcda55fc AL |
4442 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4443 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4444 | if (!b->buf) |
4445 | PerlIO_get_base(f); | |
4446 | if (!ptr) { | |
a0d1d361 | 4447 | if (c->nl) { |
14a5cf38 | 4448 | ptr = c->nl + 1; |
22569500 | 4449 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4450 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4451 | ptr--; |
4452 | } | |
4453 | } | |
14a5cf38 JH |
4454 | else { |
4455 | ptr = b->end; | |
14a5cf38 JH |
4456 | } |
4457 | ptr -= cnt; | |
4458 | } | |
4459 | else { | |
6f207bd3 | 4460 | NOOP; |
3b4bd3fd | 4461 | #if 0 |
14a5cf38 | 4462 | /* |
71200d45 | 4463 | * Test code - delete when it works ... |
14a5cf38 | 4464 | */ |
3b4bd3fd | 4465 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4466 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4467 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4468 | /* Defered CR at end of buffer case - we lied about count */ |
4469 | chk--; | |
22569500 | 4470 | } |
14a5cf38 JH |
4471 | chk -= cnt; |
4472 | ||
a0d1d361 | 4473 | if (ptr != chk ) { |
99ef548b | 4474 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4475 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4476 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4477 | } |
99ef548b | 4478 | #endif |
14a5cf38 JH |
4479 | } |
4480 | if (c->nl) { | |
4481 | if (ptr > c->nl) { | |
4482 | /* | |
71200d45 | 4483 | * They have taken what we lied about |
14a5cf38 JH |
4484 | */ |
4485 | *(c->nl) = 0xd; | |
4486 | c->nl = NULL; | |
4487 | ptr++; | |
4488 | } | |
4489 | } | |
4490 | b->ptr = ptr; | |
4491 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4492 | } |
4493 | ||
4494 | SSize_t | |
f62ce20a | 4495 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4496 | { |
14a5cf38 | 4497 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4498 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4499 | else { |
dcda55fc | 4500 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4501 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4502 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4503 | if (!b->buf) |
4504 | PerlIO_get_base(f); | |
4505 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4506 | return 0; | |
4507 | while (buf < ebuf) { | |
dcda55fc | 4508 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4509 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4510 | while (buf < ebuf && b->ptr < eptr) { | |
4511 | if (*buf == '\n') { | |
4512 | if ((b->ptr + 2) > eptr) { | |
4513 | /* | |
71200d45 | 4514 | * Not room for both |
14a5cf38 JH |
4515 | */ |
4516 | PerlIO_flush(f); | |
4517 | break; | |
4518 | } | |
4519 | else { | |
22569500 NIS |
4520 | *(b->ptr)++ = 0xd; /* CR */ |
4521 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4522 | buf++; |
4523 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4524 | PerlIO_flush(f); | |
4525 | break; | |
4526 | } | |
4527 | } | |
4528 | } | |
4529 | else { | |
dcda55fc | 4530 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4531 | } |
4532 | if (b->ptr >= eptr) { | |
4533 | PerlIO_flush(f); | |
4534 | break; | |
4535 | } | |
4536 | } | |
4537 | } | |
4538 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4539 | PerlIO_flush(f); | |
4540 | return (buf - (STDCHAR *) vbuf); | |
4541 | } | |
99efab12 NIS |
4542 | } |
4543 | ||
4544 | IV | |
f62ce20a | 4545 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4546 | { |
dcda55fc | 4547 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4548 | if (c->nl) { |
4549 | *(c->nl) = 0xd; | |
4550 | c->nl = NULL; | |
4551 | } | |
f62ce20a | 4552 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4553 | } |
4554 | ||
86e05cf2 NIS |
4555 | IV |
4556 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4557 | { | |
4558 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4559 | /* In text mode - flush any pending stuff and flip it */ | |
4560 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4561 | #ifndef PERLIO_USING_CRLF | |
4562 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
4563 | if (PerlIOBase(f)->tab == &PerlIO_crlf) { | |
4564 | PerlIO_pop(aTHX_ f); | |
4565 | } | |
4566 | #endif | |
4567 | } | |
4568 | return 0; | |
4569 | } | |
4570 | ||
27da23d5 | 4571 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4572 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4573 | "crlf", |
4574 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4575 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4576 | PerlIOCrlf_pushed, |
44798d05 | 4577 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4578 | PerlIOBuf_open, |
86e05cf2 | 4579 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4580 | NULL, |
4581 | PerlIOBase_fileno, | |
71200d45 | 4582 | PerlIOBuf_dup, |
de009b76 | 4583 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4584 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4585 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4586 | PerlIOBuf_seek, |
4587 | PerlIOBuf_tell, | |
4588 | PerlIOBuf_close, | |
4589 | PerlIOCrlf_flush, | |
4590 | PerlIOBuf_fill, | |
4591 | PerlIOBase_eof, | |
4592 | PerlIOBase_error, | |
4593 | PerlIOBase_clearerr, | |
4594 | PerlIOBase_setlinebuf, | |
4595 | PerlIOBuf_get_base, | |
4596 | PerlIOBuf_bufsiz, | |
4597 | PerlIOBuf_get_ptr, | |
4598 | PerlIOCrlf_get_cnt, | |
4599 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4600 | }; |
4601 | ||
06da4f11 NIS |
4602 | #ifdef HAS_MMAP |
4603 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4604 | /* |
71200d45 | 4605 | * mmap as "buffer" layer |
14a5cf38 | 4606 | */ |
06da4f11 | 4607 | |
14a5cf38 | 4608 | typedef struct { |
22569500 NIS |
4609 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4610 | Mmap_t mptr; /* Mapped address */ | |
4611 | Size_t len; /* mapped length */ | |
4612 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4613 | } PerlIOMmap; |
4614 | ||
4615 | IV | |
f62ce20a | 4616 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4617 | { |
27da23d5 | 4618 | dVAR; |
de009b76 AL |
4619 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4620 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4621 | IV code = 0; |
4622 | if (m->len) | |
4623 | abort(); | |
4624 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4625 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4626 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4627 | Stat_t st; |
4628 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4629 | if (code == 0 && S_ISREG(st.st_mode)) { |
4630 | SSize_t len = st.st_size - b->posn; | |
4631 | if (len > 0) { | |
4632 | Off_t posn; | |
27da23d5 JH |
4633 | if (PL_mmap_page_size <= 0) |
4634 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4635 | PL_mmap_page_size); | |
14a5cf38 JH |
4636 | if (b->posn < 0) { |
4637 | /* | |
4638 | * This is a hack - should never happen - open should | |
71200d45 | 4639 | * have set it ! |
14a5cf38 JH |
4640 | */ |
4641 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4642 | } | |
27da23d5 | 4643 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 | 4644 | len = st.st_size - posn; |
b91fbb93 | 4645 | m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
14a5cf38 | 4646 | if (m->mptr && m->mptr != (Mmap_t) - 1) { |
a5262162 | 4647 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4648 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4649 | #endif |
a5262162 | 4650 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4651 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4652 | #endif |
14a5cf38 JH |
4653 | PerlIOBase(f)->flags = |
4654 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4655 | b->end = ((STDCHAR *) m->mptr) + len; | |
4656 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4657 | b->ptr = b->buf; | |
4658 | m->len = len; | |
4659 | } | |
4660 | else { | |
4661 | b->buf = NULL; | |
4662 | } | |
4663 | } | |
4664 | else { | |
4665 | PerlIOBase(f)->flags = | |
4666 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4667 | b->buf = NULL; | |
4668 | b->ptr = b->end = b->ptr; | |
4669 | code = -1; | |
4670 | } | |
4671 | } | |
4672 | } | |
4673 | return code; | |
06da4f11 NIS |
4674 | } |
4675 | ||
4676 | IV | |
e87a358a | 4677 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4678 | { |
dcda55fc | 4679 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4680 | IV code = 0; |
4681 | if (m->len) { | |
dcda55fc | 4682 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4683 | if (b->buf) { |
1ccb7c8d JH |
4684 | /* The munmap address argument is tricky: depending on the |
4685 | * standard it is either "void *" or "caddr_t" (which is | |
4686 | * usually "char *" (signed or unsigned). If we cast it | |
4687 | * to "void *", those that have it caddr_t and an uptight | |
4688 | * C++ compiler, will freak out. But casting it as char* | |
4689 | * should work. Maybe. (Using Mmap_t figured out by | |
4690 | * Configure doesn't always work, apparently.) */ | |
4691 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4692 | b->buf = NULL; |
4693 | m->len = 0; | |
4694 | m->mptr = NULL; | |
4695 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4696 | code = -1; | |
4697 | } | |
4698 | b->ptr = b->end = b->buf; | |
4699 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4700 | } | |
4701 | return code; | |
06da4f11 NIS |
4702 | } |
4703 | ||
4704 | STDCHAR * | |
f62ce20a | 4705 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4706 | { |
dcda55fc AL |
4707 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4708 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4709 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4710 | /* | |
71200d45 | 4711 | * Already have a readbuffer in progress |
14a5cf38 JH |
4712 | */ |
4713 | return b->buf; | |
4714 | } | |
4715 | if (b->buf) { | |
4716 | /* | |
71200d45 | 4717 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4718 | */ |
22569500 NIS |
4719 | m->bbuf = b->buf; /* save it in case we need it again */ |
4720 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4721 | } |
4722 | if (!b->buf) { | |
22569500 | 4723 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4724 | if (!b->buf) { |
4725 | /* | |
71200d45 | 4726 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4727 | */ |
4728 | b->buf = m->bbuf; | |
4729 | } | |
4730 | } | |
4731 | b->ptr = b->end = b->buf; | |
4732 | if (b->buf) | |
4733 | return b->buf; | |
f62ce20a | 4734 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4735 | } |
4736 | ||
4737 | SSize_t | |
f62ce20a | 4738 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4739 | { |
dcda55fc AL |
4740 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4741 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4742 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4743 | PerlIO_flush(f); | |
4744 | if (b->ptr && (b->ptr - count) >= b->buf | |
4745 | && memEQ(b->ptr - count, vbuf, count)) { | |
4746 | b->ptr -= count; | |
4747 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4748 | return count; | |
4749 | } | |
4750 | if (m->len) { | |
4751 | /* | |
71200d45 | 4752 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4753 | */ |
4754 | PerlIO_flush(f); | |
4755 | /* | |
71200d45 | 4756 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4757 | */ |
4758 | if (!b->buf && m->bbuf) | |
4759 | b->buf = m->bbuf; | |
4760 | if (!b->buf) { | |
f62ce20a | 4761 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4762 | m->bbuf = b->buf; |
4763 | } | |
4764 | } | |
f62ce20a | 4765 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4766 | } |
4767 | ||
4768 | SSize_t | |
f62ce20a | 4769 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4770 | { |
de009b76 AL |
4771 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4772 | PerlIOBuf * const b = &m->base; | |
4773 | ||
14a5cf38 JH |
4774 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4775 | /* | |
71200d45 | 4776 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4777 | */ |
4778 | if (m->len) { | |
e87a358a | 4779 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4780 | return 0; |
4781 | } | |
4782 | /* | |
71200d45 | 4783 | * If unmap 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 | } | |
06da4f11 | 4791 | } |
f62ce20a | 4792 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4793 | } |
4794 | ||
4795 | IV | |
f62ce20a | 4796 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4797 | { |
dcda55fc AL |
4798 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4799 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4800 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4801 | /* |
71200d45 | 4802 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4803 | */ |
4804 | if (b->buf) { | |
4805 | if (m->len) { | |
4806 | /* | |
71200d45 | 4807 | * Unmap the buffer |
14a5cf38 | 4808 | */ |
e87a358a | 4809 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4810 | code = -1; |
4811 | } | |
4812 | else { | |
4813 | /* | |
4814 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4815 | * remember it in case we need one later |
14a5cf38 JH |
4816 | */ |
4817 | m->bbuf = b->buf; | |
4818 | } | |
4819 | } | |
4820 | return code; | |
06da4f11 NIS |
4821 | } |
4822 | ||
4823 | IV | |
f62ce20a | 4824 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4825 | { |
dcda55fc | 4826 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4827 | IV code = PerlIO_flush(f); |
4828 | if (code == 0 && !b->buf) { | |
f62ce20a | 4829 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4830 | } |
4831 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4832 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4833 | } |
4834 | return code; | |
06da4f11 NIS |
4835 | } |
4836 | ||
4837 | IV | |
f62ce20a | 4838 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4839 | { |
dcda55fc AL |
4840 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4841 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4842 | IV code = PerlIO_flush(f); |
4843 | if (m->bbuf) { | |
4844 | b->buf = m->bbuf; | |
4845 | m->bbuf = NULL; | |
4846 | b->ptr = b->end = b->buf; | |
4847 | } | |
f62ce20a | 4848 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4849 | code = -1; |
4850 | return code; | |
06da4f11 NIS |
4851 | } |
4852 | ||
71200d45 | 4853 | PerlIO * |
ecdeb87c | 4854 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4855 | { |
ecdeb87c | 4856 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4857 | } |
4858 | ||
06da4f11 | 4859 | |
27da23d5 | 4860 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4861 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4862 | "mmap", |
4863 | sizeof(PerlIOMmap), | |
86e05cf2 | 4864 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4865 | PerlIOBuf_pushed, |
44798d05 | 4866 | PerlIOBuf_popped, |
14a5cf38 | 4867 | PerlIOBuf_open, |
86e05cf2 | 4868 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4869 | NULL, |
4870 | PerlIOBase_fileno, | |
71200d45 | 4871 | PerlIOMmap_dup, |
14a5cf38 JH |
4872 | PerlIOBuf_read, |
4873 | PerlIOMmap_unread, | |
4874 | PerlIOMmap_write, | |
4875 | PerlIOBuf_seek, | |
4876 | PerlIOBuf_tell, | |
4877 | PerlIOBuf_close, | |
4878 | PerlIOMmap_flush, | |
4879 | PerlIOMmap_fill, | |
4880 | PerlIOBase_eof, | |
4881 | PerlIOBase_error, | |
4882 | PerlIOBase_clearerr, | |
4883 | PerlIOBase_setlinebuf, | |
4884 | PerlIOMmap_get_base, | |
4885 | PerlIOBuf_bufsiz, | |
4886 | PerlIOBuf_get_ptr, | |
4887 | PerlIOBuf_get_cnt, | |
4888 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4889 | }; |
4890 | ||
22569500 | 4891 | #endif /* HAS_MMAP */ |
06da4f11 | 4892 | |
9e353e3b | 4893 | PerlIO * |
e87a358a | 4894 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4895 | { |
97aff369 | 4896 | dVAR; |
a1ea730d | 4897 | if (!PL_perlio) { |
14a5cf38 JH |
4898 | PerlIO_stdstreams(aTHX); |
4899 | } | |
a1ea730d | 4900 | return &PL_perlio[1]; |
9e353e3b NIS |
4901 | } |
4902 | ||
9e353e3b | 4903 | PerlIO * |
e87a358a | 4904 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4905 | { |
97aff369 | 4906 | dVAR; |
a1ea730d | 4907 | if (!PL_perlio) { |
14a5cf38 JH |
4908 | PerlIO_stdstreams(aTHX); |
4909 | } | |
a1ea730d | 4910 | return &PL_perlio[2]; |
9e353e3b NIS |
4911 | } |
4912 | ||
9e353e3b | 4913 | PerlIO * |
e87a358a | 4914 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4915 | { |
97aff369 | 4916 | dVAR; |
a1ea730d | 4917 | if (!PL_perlio) { |
14a5cf38 JH |
4918 | PerlIO_stdstreams(aTHX); |
4919 | } | |
a1ea730d | 4920 | return &PL_perlio[3]; |
9e353e3b NIS |
4921 | } |
4922 | ||
4923 | /*--------------------------------------------------------------------------------------*/ | |
4924 | ||
9e353e3b NIS |
4925 | char * |
4926 | PerlIO_getname(PerlIO *f, char *buf) | |
4927 | { | |
14a5cf38 | 4928 | dTHX; |
a15cef0c | 4929 | #ifdef VMS |
73d840c0 | 4930 | char *name = NULL; |
7659f319 | 4931 | bool exported = FALSE; |
14a5cf38 | 4932 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4933 | if (!stdio) { |
4934 | stdio = PerlIO_exportFILE(f,0); | |
4935 | exported = TRUE; | |
4936 | } | |
4937 | if (stdio) { | |
14a5cf38 | 4938 | name = fgetname(stdio, buf); |
7659f319 CB |
4939 | if (exported) PerlIO_releaseFILE(f,stdio); |
4940 | } | |
73d840c0 | 4941 | return name; |
a15cef0c | 4942 | #else |
8772537c AL |
4943 | PERL_UNUSED_ARG(f); |
4944 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 4945 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 4946 | return NULL; |
a15cef0c | 4947 | #endif |
9e353e3b NIS |
4948 | } |
4949 | ||
4950 | ||
4951 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4952 | /* |
4953 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4954 | * terms of above |
14a5cf38 | 4955 | */ |
9e353e3b | 4956 | |
e87a358a NIS |
4957 | #undef PerlIO_fdopen |
4958 | PerlIO * | |
4959 | PerlIO_fdopen(int fd, const char *mode) | |
4960 | { | |
4961 | dTHX; | |
bd61b366 | 4962 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4963 | } |
4964 | ||
4965 | #undef PerlIO_open | |
4966 | PerlIO * | |
4967 | PerlIO_open(const char *path, const char *mode) | |
4968 | { | |
4969 | dTHX; | |
42d9b98d | 4970 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4971 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4972 | } |
4973 | ||
4974 | #undef Perlio_reopen | |
4975 | PerlIO * | |
4976 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4977 | { | |
4978 | dTHX; | |
42d9b98d | 4979 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4980 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4981 | } |
4982 | ||
9e353e3b | 4983 | #undef PerlIO_getc |
6f9d8c32 | 4984 | int |
9e353e3b | 4985 | PerlIO_getc(PerlIO *f) |
760ac839 | 4986 | { |
e87a358a | 4987 | dTHX; |
14a5cf38 | 4988 | STDCHAR buf[1]; |
de009b76 | 4989 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4990 | return (unsigned char) buf[0]; |
4991 | } | |
4992 | return EOF; | |
313ca112 NIS |
4993 | } |
4994 | ||
4995 | #undef PerlIO_ungetc | |
4996 | int | |
4997 | PerlIO_ungetc(PerlIO *f, int ch) | |
4998 | { | |
e87a358a | 4999 | dTHX; |
14a5cf38 JH |
5000 | if (ch != EOF) { |
5001 | STDCHAR buf = ch; | |
5002 | if (PerlIO_unread(f, &buf, 1) == 1) | |
5003 | return ch; | |
5004 | } | |
5005 | return EOF; | |
760ac839 LW |
5006 | } |
5007 | ||
9e353e3b NIS |
5008 | #undef PerlIO_putc |
5009 | int | |
5010 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 5011 | { |
e87a358a | 5012 | dTHX; |
14a5cf38 JH |
5013 | STDCHAR buf = ch; |
5014 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5015 | } |
5016 | ||
9e353e3b | 5017 | #undef PerlIO_puts |
760ac839 | 5018 | int |
9e353e3b | 5019 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5020 | { |
e87a358a | 5021 | dTHX; |
dcda55fc | 5022 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5023 | } |
5024 | ||
5025 | #undef PerlIO_rewind | |
5026 | void | |
c78749f2 | 5027 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5028 | { |
e87a358a | 5029 | dTHX; |
14a5cf38 JH |
5030 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5031 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5032 | } |
5033 | ||
5034 | #undef PerlIO_vprintf | |
5035 | int | |
5036 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5037 | { | |
14a5cf38 | 5038 | dTHX; |
396482e1 | 5039 | SV * const sv = newSVpvs(""); |
b83604b4 | 5040 | const char *s; |
14a5cf38 JH |
5041 | STRLEN len; |
5042 | SSize_t wrote; | |
2cc61e15 | 5043 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5044 | va_list apc; |
5045 | Perl_va_copy(ap, apc); | |
5046 | sv_vcatpvf(sv, fmt, &apc); | |
2cc61e15 | 5047 | #else |
14a5cf38 | 5048 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 | 5049 | #endif |
b83604b4 | 5050 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5051 | wrote = PerlIO_write(f, s, len); |
5052 | SvREFCNT_dec(sv); | |
5053 | return wrote; | |
760ac839 LW |
5054 | } |
5055 | ||
5056 | #undef PerlIO_printf | |
6f9d8c32 | 5057 | int |
14a5cf38 | 5058 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5059 | { |
14a5cf38 JH |
5060 | va_list ap; |
5061 | int result; | |
5062 | va_start(ap, fmt); | |
5063 | result = PerlIO_vprintf(f, fmt, ap); | |
5064 | va_end(ap); | |
5065 | return result; | |
760ac839 LW |
5066 | } |
5067 | ||
5068 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5069 | int |
14a5cf38 | 5070 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5071 | { |
e87a358a | 5072 | dTHX; |
14a5cf38 JH |
5073 | va_list ap; |
5074 | int result; | |
5075 | va_start(ap, fmt); | |
5076 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5077 | va_end(ap); | |
5078 | return result; | |
760ac839 LW |
5079 | } |
5080 | ||
5081 | #undef PerlIO_tmpfile | |
5082 | PerlIO * | |
c78749f2 | 5083 | PerlIO_tmpfile(void) |
760ac839 | 5084 | { |
2941a2e1 JH |
5085 | dTHX; |
5086 | PerlIO *f = NULL; | |
2941a2e1 | 5087 | #ifdef WIN32 |
de009b76 | 5088 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5089 | if (fd >= 0) |
5090 | f = PerlIO_fdopen(fd, "w+b"); | |
5091 | #else /* WIN32 */ | |
460c8493 | 5092 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
396482e1 | 5093 | SV * const sv = newSVpvs("/tmp/PerlIO_XXXXXX"); |
2941a2e1 JH |
5094 | /* |
5095 | * I have no idea how portable mkstemp() is ... NI-S | |
5096 | */ | |
de009b76 | 5097 | const int fd = mkstemp(SvPVX(sv)); |
2941a2e1 JH |
5098 | if (fd >= 0) { |
5099 | f = PerlIO_fdopen(fd, "w+"); | |
5100 | if (f) | |
5101 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
b15aece3 | 5102 | PerlLIO_unlink(SvPVX_const(sv)); |
2941a2e1 | 5103 | } |
b2166d27 | 5104 | SvREFCNT_dec(sv); |
2941a2e1 | 5105 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5106 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5107 | |
085e731f CB |
5108 | if (stdio) |
5109 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5110 | ||
2941a2e1 JH |
5111 | # endif /* else HAS_MKSTEMP */ |
5112 | #endif /* else WIN32 */ | |
5113 | return f; | |
760ac839 LW |
5114 | } |
5115 | ||
6f9d8c32 NIS |
5116 | #undef HAS_FSETPOS |
5117 | #undef HAS_FGETPOS | |
5118 | ||
22569500 NIS |
5119 | #endif /* USE_SFIO */ |
5120 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5121 | |
9e353e3b | 5122 | /*======================================================================================*/ |
14a5cf38 | 5123 | /* |
71200d45 NIS |
5124 | * Now some functions in terms of above which may be needed even if we are |
5125 | * not in true PerlIO mode | |
9e353e3b | 5126 | */ |
188f0c84 YO |
5127 | const char * |
5128 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5129 | { | |
5130 | dVAR; | |
8b850bd5 NC |
5131 | const char *direction = NULL; |
5132 | SV *layers; | |
188f0c84 YO |
5133 | /* |
5134 | * Need to supply default layer info from open.pm | |
5135 | */ | |
8b850bd5 NC |
5136 | |
5137 | if (!PL_curcop) | |
5138 | return NULL; | |
5139 | ||
5140 | if (mode && mode[0] != 'r') { | |
5141 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5142 | direction = "open>"; | |
5143 | } else { | |
5144 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5145 | direction = "open<"; | |
188f0c84 | 5146 | } |
8b850bd5 NC |
5147 | if (!direction) |
5148 | return NULL; | |
5149 | ||
5150 | layers = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, | |
5151 | 0, direction, 5, 0, 0); | |
5152 | ||
5153 | assert(layers); | |
5154 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5155 | } |
5156 | ||
9e353e3b | 5157 | |
760ac839 LW |
5158 | #ifndef HAS_FSETPOS |
5159 | #undef PerlIO_setpos | |
5160 | int | |
766a733e | 5161 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5162 | { |
14a5cf38 JH |
5163 | dTHX; |
5164 | if (SvOK(pos)) { | |
5165 | STRLEN len; | |
c4420975 | 5166 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5167 | if (f && len == sizeof(Off_t)) |
5168 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5169 | } | |
93189314 | 5170 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5171 | return -1; |
760ac839 | 5172 | } |
c411622e | 5173 | #else |
c411622e | 5174 | #undef PerlIO_setpos |
5175 | int | |
766a733e | 5176 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5177 | { |
14a5cf38 JH |
5178 | dTHX; |
5179 | if (SvOK(pos)) { | |
5180 | STRLEN len; | |
c4420975 | 5181 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5182 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5183 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5184 | return fsetpos64(f, fpos); |
d9b3e12d | 5185 | #else |
14a5cf38 | 5186 | return fsetpos(f, fpos); |
d9b3e12d | 5187 | #endif |
14a5cf38 | 5188 | } |
766a733e | 5189 | } |
93189314 | 5190 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5191 | return -1; |
c411622e | 5192 | } |
5193 | #endif | |
760ac839 LW |
5194 | |
5195 | #ifndef HAS_FGETPOS | |
5196 | #undef PerlIO_getpos | |
5197 | int | |
766a733e | 5198 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5199 | { |
14a5cf38 JH |
5200 | dTHX; |
5201 | Off_t posn = PerlIO_tell(f); | |
5202 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5203 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5204 | } |
c411622e | 5205 | #else |
c411622e | 5206 | #undef PerlIO_getpos |
5207 | int | |
766a733e | 5208 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5209 | { |
14a5cf38 JH |
5210 | dTHX; |
5211 | Fpos_t fpos; | |
5212 | int code; | |
2d4389e4 | 5213 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5214 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5215 | #else |
14a5cf38 | 5216 | code = fgetpos(f, &fpos); |
d9b3e12d | 5217 | #endif |
14a5cf38 JH |
5218 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5219 | return code; | |
c411622e | 5220 | } |
5221 | #endif | |
760ac839 LW |
5222 | |
5223 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5224 | ||
5225 | int | |
c78749f2 | 5226 | vprintf(char *pat, char *args) |
662a7e3f CS |
5227 | { |
5228 | _doprnt(pat, args, stdout); | |
22569500 | 5229 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5230 | * value */ |
662a7e3f CS |
5231 | } |
5232 | ||
5233 | int | |
c78749f2 | 5234 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5235 | { |
5236 | _doprnt(pat, args, fd); | |
22569500 | 5237 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5238 | * value */ |
760ac839 LW |
5239 | } |
5240 | ||
5241 | #endif | |
5242 | ||
5243 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5244 | int |
8ac85365 | 5245 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5246 | { |
8ff9a42b | 5247 | dTHX; |
d9fad198 | 5248 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5249 | PERL_UNUSED_CONTEXT; |
5250 | ||
1208b3dd JH |
5251 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5252 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5253 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5254 | } |
1208b3dd | 5255 | #endif |
14a5cf38 | 5256 | return val; |
760ac839 LW |
5257 | } |
5258 | #endif | |
5259 | ||
5260 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5261 | int |
14a5cf38 | 5262 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5263 | { |
14a5cf38 JH |
5264 | va_list ap; |
5265 | int result; | |
5266 | va_start(ap, fmt); | |
5267 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5268 | va_end(ap); | |
5269 | return result; | |
760ac839 LW |
5270 | } |
5271 | #endif | |
9cfa90c0 NC |
5272 | |
5273 | /* | |
5274 | * Local variables: | |
5275 | * c-indentation-style: bsd | |
5276 | * c-basic-offset: 4 | |
5277 | * indent-tabs-mode: t | |
5278 | * End: | |
5279 | * | |
37442d52 RGS |
5280 | * ex: set ts=8 sts=4 sw=4 noet: |
5281 | */ |