Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
5cb43542 RGS |
2 | * perlio.c |
3 | * Copyright (c) 1996-2006, Nick Ing-Simmons | |
1129b882 | 4 | * Copyright (c) 2006, 2007, 2008 Larry Wall and others |
5cb43542 RGS |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public License | |
7 | * or the Artistic License, as specified in the README file. | |
760ac839 LW |
8 | */ |
9 | ||
14a5cf38 | 10 | /* |
d31a8517 AT |
11 | * Hour after hour for nearly three weary days he had jogged up and down, |
12 | * over passes, and through long dales, and across many streams. | |
4ac71550 TC |
13 | * |
14 | * [pp.791-792 of _The Lord of the Rings_, V/iii: "The Muster of Rohan"] | |
d31a8517 AT |
15 | */ |
16 | ||
166f8a29 DM |
17 | /* This file contains the functions needed to implement PerlIO, which |
18 | * is Perl's private replacement for the C stdio library. This is used | |
19 | * by default unless you compile with -Uuseperlio or run with | |
20 | * PERLIO=:stdio (but don't do this unless you know what you're doing) | |
21 | */ | |
22 | ||
d31a8517 | 23 | /* |
71200d45 | 24 | * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get |
14a5cf38 | 25 | * at the dispatch tables, even when we do not need it for other reasons. |
71200d45 | 26 | * Invent a dSYS macro to abstract this out |
14a5cf38 | 27 | */ |
7bcba3d4 NIS |
28 | #ifdef PERL_IMPLICIT_SYS |
29 | #define dSYS dTHX | |
30 | #else | |
31 | #define dSYS dNOOP | |
32 | #endif | |
33 | ||
760ac839 | 34 | #define VOIDUSED 1 |
12ae5dfc JH |
35 | #ifdef PERL_MICRO |
36 | # include "uconfig.h" | |
37 | #else | |
b0f06652 VK |
38 | # ifndef USE_CROSS_COMPILE |
39 | # include "config.h" | |
40 | # else | |
41 | # include "xconfig.h" | |
42 | # endif | |
12ae5dfc | 43 | #endif |
760ac839 | 44 | |
6f9d8c32 | 45 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 46 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
14a5cf38 | 47 | /* |
71200d45 | 48 | * #define PerlIO FILE |
14a5cf38 | 49 | */ |
760ac839 LW |
50 | #endif |
51 | /* | |
6f9d8c32 | 52 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 53 | * which are not #defined in perlio.h. |
6f9d8c32 | 54 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
55 | */ |
56 | ||
57 | #include "EXTERN.h" | |
864dbfa3 | 58 | #define PERL_IN_PERLIO_C |
760ac839 LW |
59 | #include "perl.h" |
60 | ||
32af7c23 CL |
61 | #ifdef PERL_IMPLICIT_CONTEXT |
62 | #undef dSYS | |
63 | #define dSYS dTHX | |
64 | #endif | |
65 | ||
0c4f7ff0 NIS |
66 | #include "XSUB.h" |
67 | ||
9cffb111 OS |
68 | #ifdef __Lynx__ |
69 | /* Missing proto on LynxOS */ | |
70 | int mkstemp(char*); | |
71 | #endif | |
72 | ||
abf9167d DM |
73 | #define PerlIO_lockcnt(f) (((PerlIOl*)(f))->head->flags) |
74 | ||
1b7a0411 | 75 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 76 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 77 | if (PerlIOValid(f)) { \ |
46c461b5 | 78 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
79 | if (tab && tab->callback) \ |
80 | return (*tab->callback) args; \ | |
81 | else \ | |
82 | return PerlIOBase_ ## base args; \ | |
83 | } \ | |
84 | else \ | |
85 | SETERRNO(EBADF, SS_IVCHAN); \ | |
86 | return failure | |
87 | ||
88 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 89 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 90 | if (PerlIOValid(f)) { \ |
46c461b5 | 91 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
92 | if (tab && tab->callback) \ |
93 | return (*tab->callback) args; \ | |
94 | SETERRNO(EINVAL, LIB_INVARG); \ | |
95 | } \ | |
96 | else \ | |
97 | SETERRNO(EBADF, SS_IVCHAN); \ | |
98 | return failure | |
99 | ||
100 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 101 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 102 | if (PerlIOValid(f)) { \ |
46c461b5 | 103 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
104 | if (tab && tab->callback) \ |
105 | (*tab->callback) args; \ | |
106 | else \ | |
107 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
108 | } \ |
109 | else \ | |
110 | SETERRNO(EBADF, SS_IVCHAN) | |
111 | ||
112 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 113 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 114 | if (PerlIOValid(f)) { \ |
46c461b5 | 115 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
116 | if (tab && tab->callback) \ |
117 | (*tab->callback) args; \ | |
37725cdc NIS |
118 | else \ |
119 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
120 | } \ |
121 | else \ | |
122 | SETERRNO(EBADF, SS_IVCHAN) | |
123 | ||
89a3a251 JH |
124 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
125 | extern int fseeko(FILE *, off_t, int); | |
126 | extern off_t ftello(FILE *); | |
127 | #endif | |
128 | ||
71ab4674 | 129 | #ifndef USE_SFIO |
a0c21aa1 JH |
130 | |
131 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); | |
132 | ||
71ab4674 SP |
133 | int |
134 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
135 | { | |
136 | /* | |
137 | * This used to be contents of do_binmode in doio.c | |
138 | */ | |
139 | #ifdef DOSISH | |
cd86ed9d | 140 | # if defined(atarist) |
58c0efa5 | 141 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
142 | if (!fflush(fp)) { |
143 | if (mode & O_BINARY) | |
144 | ((FILE *) fp)->_flag |= _IOBIN; | |
145 | else | |
146 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
147 | return 1; | |
148 | } | |
149 | return 0; | |
150 | # else | |
151 | dTHX; | |
58c0efa5 | 152 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
153 | #ifdef NETWARE |
154 | if (PerlLIO_setmode(fp, mode) != -1) { | |
155 | #else | |
156 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
157 | #endif | |
71ab4674 SP |
158 | return 1; |
159 | } | |
160 | else | |
161 | return 0; | |
162 | # endif | |
163 | #else | |
164 | # if defined(USEMYBINMODE) | |
165 | dTHX; | |
58c0efa5 RGS |
166 | # if defined(__CYGWIN__) |
167 | PERL_UNUSED_ARG(iotype); | |
168 | # endif | |
71ab4674 SP |
169 | if (my_binmode(fp, iotype, mode) != FALSE) |
170 | return 1; | |
171 | else | |
172 | return 0; | |
173 | # else | |
174 | PERL_UNUSED_ARG(fp); | |
175 | PERL_UNUSED_ARG(iotype); | |
176 | PERL_UNUSED_ARG(mode); | |
177 | return 1; | |
178 | # endif | |
179 | #endif | |
180 | } | |
181 | #endif /* sfio */ | |
182 | ||
06c7082d | 183 | #ifndef O_ACCMODE |
22569500 | 184 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
185 | #endif |
186 | ||
187 | int | |
188 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
189 | { | |
de009b76 | 190 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
191 | int ix = 0; |
192 | int ptype; | |
193 | switch (result) { | |
194 | case O_RDONLY: | |
195 | ptype = IoTYPE_RDONLY; | |
196 | break; | |
197 | case O_WRONLY: | |
198 | ptype = IoTYPE_WRONLY; | |
199 | break; | |
200 | case O_RDWR: | |
201 | default: | |
202 | ptype = IoTYPE_RDWR; | |
203 | break; | |
204 | } | |
205 | if (writing) | |
206 | *writing = (result != O_RDONLY); | |
207 | ||
208 | if (result == O_RDONLY) { | |
209 | mode[ix++] = 'r'; | |
210 | } | |
211 | #ifdef O_APPEND | |
212 | else if (rawmode & O_APPEND) { | |
213 | mode[ix++] = 'a'; | |
214 | if (result != O_WRONLY) | |
215 | mode[ix++] = '+'; | |
216 | } | |
217 | #endif | |
218 | else { | |
219 | if (result == O_WRONLY) | |
220 | mode[ix++] = 'w'; | |
221 | else { | |
222 | mode[ix++] = 'r'; | |
223 | mode[ix++] = '+'; | |
224 | } | |
225 | } | |
226 | if (rawmode & O_BINARY) | |
227 | mode[ix++] = 'b'; | |
228 | mode[ix] = '\0'; | |
229 | return ptype; | |
230 | } | |
231 | ||
eb73beca NIS |
232 | #ifndef PERLIO_LAYERS |
233 | int | |
234 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
235 | { | |
6874a2de NIS |
236 | if (!names || !*names |
237 | || strEQ(names, ":crlf") | |
238 | || strEQ(names, ":raw") | |
239 | || strEQ(names, ":bytes") | |
240 | ) { | |
14a5cf38 JH |
241 | return 0; |
242 | } | |
243 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
244 | /* | |
71200d45 | 245 | * NOTREACHED |
14a5cf38 JH |
246 | */ |
247 | return -1; | |
eb73beca NIS |
248 | } |
249 | ||
13621cfb NIS |
250 | void |
251 | PerlIO_destruct(pTHX) | |
252 | { | |
253 | } | |
254 | ||
f5b9d040 NIS |
255 | int |
256 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
257 | { | |
92bff44d | 258 | #ifdef USE_SFIO |
8772537c AL |
259 | PERL_UNUSED_ARG(iotype); |
260 | PERL_UNUSED_ARG(mode); | |
261 | PERL_UNUSED_ARG(names); | |
14a5cf38 | 262 | return 1; |
92bff44d | 263 | #else |
14a5cf38 | 264 | return perlsio_binmode(fp, iotype, mode); |
92bff44d | 265 | #endif |
f5b9d040 | 266 | } |
60382766 | 267 | |
e0fa5af2 | 268 | PerlIO * |
ecdeb87c | 269 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 270 | { |
a0fd4948 | 271 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
272 | return NULL; |
273 | #else | |
274 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 275 | return PerlSIO_fdupopen(f); |
0553478e | 276 | #else |
30753f56 NIS |
277 | #ifdef WIN32 |
278 | return win32_fdupopen(f); | |
279 | #else | |
e0fa5af2 | 280 | if (f) { |
504618e9 | 281 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 282 | if (fd >= 0) { |
06c7082d | 283 | char mode[8]; |
a5936e02 | 284 | #ifdef DJGPP |
dcda55fc AL |
285 | const int omode = djgpp_get_stream_mode(f); |
286 | #else | |
287 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 288 | #endif |
06c7082d | 289 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 290 | /* the r+ is a hack */ |
06c7082d | 291 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
292 | } |
293 | return NULL; | |
294 | } | |
295 | else { | |
93189314 | 296 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 297 | } |
7114a2d2 | 298 | #endif |
e0fa5af2 | 299 | return NULL; |
0553478e | 300 | #endif |
30753f56 | 301 | #endif |
e0fa5af2 NIS |
302 | } |
303 | ||
304 | ||
14a5cf38 | 305 | /* |
71200d45 | 306 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 307 | */ |
ee518936 NIS |
308 | |
309 | PerlIO * | |
14a5cf38 JH |
310 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
311 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
312 | { | |
7cf31beb NIS |
313 | if (narg) { |
314 | if (narg > 1) { | |
3b8752bb | 315 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 316 | } |
14a5cf38 JH |
317 | if (*args == &PL_sv_undef) |
318 | return PerlIO_tmpfile(); | |
319 | else { | |
e62f0680 | 320 | const char *name = SvPV_nolen_const(*args); |
3b6c1aba | 321 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
322 | fd = PerlLIO_open3(name, imode, perm); |
323 | if (fd >= 0) | |
de009b76 | 324 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
325 | } |
326 | else if (old) { | |
327 | return PerlIO_reopen(name, mode, old); | |
328 | } | |
329 | else { | |
330 | return PerlIO_open(name, mode); | |
331 | } | |
332 | } | |
333 | } | |
334 | else { | |
335 | return PerlIO_fdopen(fd, (char *) mode); | |
336 | } | |
337 | return NULL; | |
ee518936 NIS |
338 | } |
339 | ||
0c4f7ff0 NIS |
340 | XS(XS_PerlIO__Layer__find) |
341 | { | |
14a5cf38 JH |
342 | dXSARGS; |
343 | if (items < 2) | |
344 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
345 | else { | |
dcda55fc | 346 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
347 | ST(0) = (strEQ(name, "crlf") |
348 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
349 | XSRETURN(1); | |
350 | } | |
0c4f7ff0 NIS |
351 | } |
352 | ||
353 | ||
354 | void | |
355 | Perl_boot_core_PerlIO(pTHX) | |
356 | { | |
14a5cf38 | 357 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
358 | } |
359 | ||
ac27b0f5 NIS |
360 | #endif |
361 | ||
32e30700 | 362 | |
6f9d8c32 | 363 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
364 | |
365 | void | |
e8632036 | 366 | PerlIO_init(pTHX) |
760ac839 | 367 | { |
96a5add6 | 368 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
369 | /* |
370 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 371 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 372 | * that may be required by loadable extensions e.g. for |
71200d45 | 373 | * FileHandle::tmpfile |
14a5cf38 | 374 | */ |
760ac839 LW |
375 | } |
376 | ||
33dcbb9a | 377 | #undef PerlIO_tmpfile |
378 | PerlIO * | |
8ac85365 | 379 | PerlIO_tmpfile(void) |
33dcbb9a | 380 | { |
14a5cf38 | 381 | return tmpfile(); |
33dcbb9a | 382 | } |
383 | ||
22569500 | 384 | #else /* PERLIO_IS_STDIO */ |
760ac839 LW |
385 | |
386 | #ifdef USE_SFIO | |
387 | ||
388 | #undef HAS_FSETPOS | |
389 | #undef HAS_FGETPOS | |
390 | ||
14a5cf38 JH |
391 | /* |
392 | * This section is just to make sure these functions get pulled in from | |
71200d45 | 393 | * libsfio.a |
14a5cf38 | 394 | */ |
760ac839 LW |
395 | |
396 | #undef PerlIO_tmpfile | |
397 | PerlIO * | |
c78749f2 | 398 | PerlIO_tmpfile(void) |
760ac839 | 399 | { |
14a5cf38 | 400 | return sftmp(0); |
760ac839 LW |
401 | } |
402 | ||
403 | void | |
e8632036 | 404 | PerlIO_init(pTHX) |
760ac839 | 405 | { |
96a5add6 | 406 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
407 | /* |
408 | * Force this file to be included in perl binary. Which allows this | |
409 | * file to force inclusion of other functions that may be required by | |
71200d45 | 410 | * loadable extensions e.g. for FileHandle::tmpfile |
14a5cf38 | 411 | */ |
760ac839 | 412 | |
14a5cf38 | 413 | /* |
71200d45 | 414 | * Hack sfio does its own 'autoflush' on stdout in common cases. Flush |
14a5cf38 | 415 | * results in a lot of lseek()s to regular files and lot of small |
71200d45 | 416 | * writes to pipes. |
14a5cf38 JH |
417 | */ |
418 | sfset(sfstdout, SF_SHARE, 0); | |
760ac839 LW |
419 | } |
420 | ||
b9d6bf13 | 421 | /* This is not the reverse of PerlIO_exportFILE(), PerlIO_releaseFILE() is. */ |
92bff44d | 422 | PerlIO * |
4b069b44 | 423 | PerlIO_importFILE(FILE *stdio, const char *mode) |
92bff44d | 424 | { |
de009b76 | 425 | const int fd = fileno(stdio); |
4b069b44 | 426 | if (!mode || !*mode) { |
81428673 | 427 | mode = "r+"; |
4b069b44 NIS |
428 | } |
429 | return PerlIO_fdopen(fd, mode); | |
92bff44d NIS |
430 | } |
431 | ||
432 | FILE * | |
433 | PerlIO_findFILE(PerlIO *pio) | |
434 | { | |
de009b76 AL |
435 | const int fd = PerlIO_fileno(pio); |
436 | FILE * const f = fdopen(fd, "r+"); | |
14a5cf38 JH |
437 | PerlIO_flush(pio); |
438 | if (!f && errno == EINVAL) | |
439 | f = fdopen(fd, "w"); | |
440 | if (!f && errno == EINVAL) | |
441 | f = fdopen(fd, "r"); | |
442 | return f; | |
92bff44d NIS |
443 | } |
444 | ||
445 | ||
22569500 | 446 | #else /* USE_SFIO */ |
6f9d8c32 | 447 | /*======================================================================================*/ |
14a5cf38 | 448 | /* |
71200d45 | 449 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 450 | */ |
760ac839 | 451 | |
76ced9ad NIS |
452 | #include "perliol.h" |
453 | ||
06da4f11 NIS |
454 | #ifdef HAS_MMAP |
455 | #include <sys/mman.h> | |
456 | #endif | |
457 | ||
6f9d8c32 | 458 | void |
14a5cf38 JH |
459 | PerlIO_debug(const char *fmt, ...) |
460 | { | |
14a5cf38 JH |
461 | va_list ap; |
462 | dSYS; | |
463 | va_start(ap, fmt); | |
582588d2 NC |
464 | if (!PL_perlio_debug_fd) { |
465 | if (!PL_tainting && PL_uid == PL_euid && PL_gid == PL_egid) { | |
466 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); | |
467 | if (s && *s) | |
468 | PL_perlio_debug_fd | |
469 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
470 | else | |
471 | PL_perlio_debug_fd = -1; | |
472 | } else { | |
473 | /* tainting or set*id, so ignore the environment, and ensure we | |
474 | skip these tests next time through. */ | |
27da23d5 | 475 | PL_perlio_debug_fd = -1; |
582588d2 | 476 | } |
14a5cf38 | 477 | } |
27da23d5 | 478 | if (PL_perlio_debug_fd > 0) { |
14a5cf38 | 479 | dTHX; |
70ace5da | 480 | #ifdef USE_ITHREADS |
dcda55fc | 481 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
482 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
483 | char buffer[1024]; | |
1208b3dd JH |
484 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
485 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
486 | PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); | |
70ace5da | 487 | #else |
dcda55fc AL |
488 | const char *s = CopFILE(PL_curcop); |
489 | STRLEN len; | |
550e2ce0 NC |
490 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
491 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
492 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
493 | ||
b83604b4 | 494 | s = SvPV_const(sv, len); |
27da23d5 | 495 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 496 | SvREFCNT_dec(sv); |
70ace5da | 497 | #endif |
14a5cf38 JH |
498 | } |
499 | va_end(ap); | |
6f9d8c32 NIS |
500 | } |
501 | ||
9e353e3b NIS |
502 | /*--------------------------------------------------------------------------------------*/ |
503 | ||
14a5cf38 | 504 | /* |
71200d45 | 505 | * Inner level routines |
14a5cf38 | 506 | */ |
9e353e3b | 507 | |
16865ff7 DM |
508 | /* check that the head field of each layer points back to the head */ |
509 | ||
510 | #ifdef DEBUGGING | |
511 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
512 | static void | |
513 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
514 | { | |
515 | PerlIOl *head, *p; | |
516 | int seen = 0; | |
517 | if (!PerlIOValid(f)) | |
518 | return; | |
519 | p = head = PerlIOBase(f)->head; | |
520 | assert(p); | |
521 | do { | |
522 | assert(p->head == head); | |
523 | if (p == (PerlIOl*)f) | |
524 | seen = 1; | |
525 | p = p->next; | |
526 | } while (p); | |
527 | assert(seen); | |
528 | } | |
529 | #else | |
530 | # define VERIFY_HEAD(f) | |
531 | #endif | |
532 | ||
533 | ||
14a5cf38 | 534 | /* |
71200d45 | 535 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 536 | */ |
05d1247b | 537 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 538 | |
8995e67d DM |
539 | static void |
540 | PerlIO_init_table(pTHX) | |
541 | { | |
542 | if (PL_perlio) | |
543 | return; | |
544 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
545 | } | |
546 | ||
547 | ||
548 | ||
760ac839 | 549 | PerlIO * |
5f1a76d0 | 550 | PerlIO_allocate(pTHX) |
6f9d8c32 | 551 | { |
97aff369 | 552 | dVAR; |
14a5cf38 | 553 | /* |
71200d45 | 554 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 555 | */ |
303f2dc3 DM |
556 | PerlIOl **last; |
557 | PerlIOl *f; | |
a1ea730d | 558 | last = &PL_perlio; |
14a5cf38 JH |
559 | while ((f = *last)) { |
560 | int i; | |
303f2dc3 | 561 | last = (PerlIOl **) (f); |
14a5cf38 | 562 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 563 | if (!((++f)->next)) { |
abf9167d | 564 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 565 | f->tab = NULL; |
16865ff7 | 566 | f->head = f; |
303f2dc3 | 567 | return (PerlIO *)f; |
14a5cf38 JH |
568 | } |
569 | } | |
570 | } | |
303f2dc3 | 571 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
572 | if (!f) { |
573 | return NULL; | |
574 | } | |
303f2dc3 | 575 | *last = (PerlIOl*) f++; |
abf9167d | 576 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 577 | f->tab = NULL; |
16865ff7 | 578 | f->head = f; |
303f2dc3 | 579 | return (PerlIO*) f; |
05d1247b NIS |
580 | } |
581 | ||
a1ea730d NIS |
582 | #undef PerlIO_fdupopen |
583 | PerlIO * | |
ecdeb87c | 584 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 585 | { |
04892f78 | 586 | if (PerlIOValid(f)) { |
de009b76 | 587 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 588 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
589 | if (tab && tab->Dup) |
590 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
591 | else { |
592 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
593 | } | |
a1ea730d | 594 | } |
210e727c JH |
595 | else |
596 | SETERRNO(EBADF, SS_IVCHAN); | |
597 | ||
598 | return NULL; | |
a1ea730d NIS |
599 | } |
600 | ||
601 | void | |
303f2dc3 | 602 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 603 | { |
303f2dc3 | 604 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
605 | if (table) { |
606 | int i; | |
303f2dc3 | 607 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 608 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
609 | PerlIOl * const f = table + i; |
610 | if (f->next) { | |
611 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
612 | } |
613 | } | |
3a1ee7e8 | 614 | Safefree(table); |
14a5cf38 | 615 | *tablep = NULL; |
05d1247b | 616 | } |
05d1247b NIS |
617 | } |
618 | ||
fcf2db38 NIS |
619 | |
620 | PerlIO_list_t * | |
3a1ee7e8 | 621 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 622 | { |
14a5cf38 | 623 | PerlIO_list_t *list; |
96a5add6 | 624 | PERL_UNUSED_CONTEXT; |
a02a5408 | 625 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
626 | list->refcnt = 1; |
627 | return list; | |
fcf2db38 NIS |
628 | } |
629 | ||
630 | void | |
3a1ee7e8 | 631 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 632 | { |
14a5cf38 JH |
633 | if (list) { |
634 | if (--list->refcnt == 0) { | |
635 | if (list->array) { | |
14a5cf38 | 636 | IV i; |
ef8d46e8 VP |
637 | for (i = 0; i < list->cur; i++) |
638 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
639 | Safefree(list->array); |
640 | } | |
641 | Safefree(list); | |
642 | } | |
643 | } | |
fcf2db38 NIS |
644 | } |
645 | ||
646 | void | |
3a1ee7e8 | 647 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 648 | { |
97aff369 | 649 | dVAR; |
334e202e | 650 | PerlIO_pair_t *p; |
b37c2d43 AL |
651 | PERL_UNUSED_CONTEXT; |
652 | ||
14a5cf38 JH |
653 | if (list->cur >= list->len) { |
654 | list->len += 8; | |
655 | if (list->array) | |
656 | Renew(list->array, list->len, PerlIO_pair_t); | |
657 | else | |
a02a5408 | 658 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
659 | } |
660 | p = &(list->array[list->cur++]); | |
661 | p->funcs = funcs; | |
662 | if ((p->arg = arg)) { | |
f84c484e | 663 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 664 | } |
fcf2db38 NIS |
665 | } |
666 | ||
3a1ee7e8 NIS |
667 | PerlIO_list_t * |
668 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
669 | { | |
b37c2d43 | 670 | PerlIO_list_t *list = NULL; |
694c95cf JH |
671 | if (proto) { |
672 | int i; | |
673 | list = PerlIO_list_alloc(aTHX); | |
674 | for (i=0; i < proto->cur; i++) { | |
a951d81d BL |
675 | SV *arg = proto->array[i].arg; |
676 | #ifdef sv_dup | |
677 | if (arg && param) | |
678 | arg = sv_dup(arg, param); | |
679 | #else | |
680 | PERL_UNUSED_ARG(param); | |
681 | #endif | |
694c95cf JH |
682 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
683 | } | |
3a1ee7e8 NIS |
684 | } |
685 | return list; | |
686 | } | |
4a4a6116 | 687 | |
05d1247b | 688 | void |
3a1ee7e8 | 689 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 690 | { |
3aaf42a7 | 691 | #ifdef USE_ITHREADS |
303f2dc3 DM |
692 | PerlIOl **table = &proto->Iperlio; |
693 | PerlIOl *f; | |
3a1ee7e8 NIS |
694 | PL_perlio = NULL; |
695 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
696 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 697 | PerlIO_init_table(aTHX); |
a25429c6 | 698 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
699 | while ((f = *table)) { |
700 | int i; | |
303f2dc3 | 701 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 702 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
703 | if (f->next) { |
704 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
705 | } |
706 | f++; | |
707 | } | |
708 | } | |
1b6737cc | 709 | #else |
a25429c6 | 710 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
711 | PERL_UNUSED_ARG(proto); |
712 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 713 | #endif |
9a6404c5 DM |
714 | } |
715 | ||
716 | void | |
13621cfb NIS |
717 | PerlIO_destruct(pTHX) |
718 | { | |
97aff369 | 719 | dVAR; |
303f2dc3 DM |
720 | PerlIOl **table = &PL_perlio; |
721 | PerlIOl *f; | |
694c95cf | 722 | #ifdef USE_ITHREADS |
a25429c6 | 723 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 724 | #endif |
14a5cf38 JH |
725 | while ((f = *table)) { |
726 | int i; | |
303f2dc3 | 727 | table = (PerlIOl **) (f++); |
14a5cf38 | 728 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 729 | PerlIO *x = &(f->next); |
dcda55fc | 730 | const PerlIOl *l; |
14a5cf38 | 731 | while ((l = *x)) { |
cc6623a8 | 732 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
733 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
734 | PerlIO_flush(x); | |
735 | PerlIO_pop(aTHX_ x); | |
736 | } | |
737 | else { | |
738 | x = PerlIONext(x); | |
739 | } | |
740 | } | |
741 | f++; | |
742 | } | |
743 | } | |
13621cfb NIS |
744 | } |
745 | ||
746 | void | |
a999f61b | 747 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 748 | { |
dcda55fc | 749 | const PerlIOl *l = *f; |
16865ff7 | 750 | VERIFY_HEAD(f); |
14a5cf38 | 751 | if (l) { |
cc6623a8 DM |
752 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
753 | l->tab ? l->tab->name : "(Null)"); | |
754 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
755 | /* |
756 | * If popped returns non-zero do not free its layer structure | |
757 | * it has either done so itself, or it is shared and still in | |
71200d45 | 758 | * use |
14a5cf38 | 759 | */ |
f62ce20a | 760 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
761 | return; |
762 | } | |
abf9167d DM |
763 | if (PerlIO_lockcnt(f)) { |
764 | /* we're in use; defer freeing the structure */ | |
765 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
766 | PerlIOBase(f)->tab = NULL; | |
767 | } | |
768 | else { | |
769 | *f = l->next; | |
770 | Safefree(l); | |
771 | } | |
772 | ||
a8c08ecd | 773 | } |
6f9d8c32 NIS |
774 | } |
775 | ||
39f7a870 JH |
776 | /* Return as an array the stack of layers on a filehandle. Note that |
777 | * the stack is returned top-first in the array, and there are three | |
778 | * times as many array elements as there are layers in the stack: the | |
779 | * first element of a layer triplet is the name, the second one is the | |
780 | * arguments, and the third one is the flags. */ | |
781 | ||
782 | AV * | |
783 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
784 | { | |
97aff369 | 785 | dVAR; |
dcda55fc | 786 | AV * const av = newAV(); |
39f7a870 | 787 | |
dcda55fc AL |
788 | if (PerlIOValid(f)) { |
789 | PerlIOl *l = PerlIOBase(f); | |
790 | ||
791 | while (l) { | |
92e45a3e NC |
792 | /* There is some collusion in the implementation of |
793 | XS_PerlIO_get_layers - it knows that name and flags are | |
794 | generated as fresh SVs here, and takes advantage of that to | |
795 | "copy" them by taking a reference. If it changes here, it needs | |
796 | to change there too. */ | |
dcda55fc AL |
797 | SV * const name = l->tab && l->tab->name ? |
798 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
799 | SV * const arg = l->tab && l->tab->Getarg ? | |
800 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
801 | av_push(av, name); | |
802 | av_push(av, arg); | |
803 | av_push(av, newSViv((IV)l->flags)); | |
804 | l = l->next; | |
805 | } | |
806 | } | |
39f7a870 | 807 | |
dcda55fc | 808 | return av; |
39f7a870 JH |
809 | } |
810 | ||
9e353e3b | 811 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 812 | /* |
71200d45 | 813 | * XS Interface for perl code |
14a5cf38 | 814 | */ |
9e353e3b | 815 | |
fcf2db38 | 816 | PerlIO_funcs * |
2edd7e44 | 817 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 818 | { |
27da23d5 | 819 | dVAR; |
14a5cf38 JH |
820 | IV i; |
821 | if ((SSize_t) len <= 0) | |
822 | len = strlen(name); | |
3a1ee7e8 | 823 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 824 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 825 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 826 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
827 | return f; |
828 | } | |
829 | } | |
3a1ee7e8 NIS |
830 | if (load && PL_subname && PL_def_layerlist |
831 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
832 | if (PL_in_load_module) { |
833 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
834 | return NULL; | |
835 | } else { | |
396482e1 | 836 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 837 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 838 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 839 | ENTER; |
4fa7c2bf | 840 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 841 | if (cv) { |
9cfa90c0 | 842 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 843 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 844 | } |
4fa7c2bf | 845 | PL_in_load_module = TRUE; |
d7a09b41 SR |
846 | /* |
847 | * The two SVs are magically freed by load_module | |
848 | */ | |
a0714e2c | 849 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
850 | LEAVE; |
851 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
852 | } | |
14a5cf38 JH |
853 | } |
854 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
855 | return NULL; | |
f3862f8b NIS |
856 | } |
857 | ||
2a1bc955 | 858 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
859 | |
860 | static int | |
861 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
862 | { | |
14a5cf38 | 863 | if (SvROK(sv)) { |
159b6efe | 864 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
865 | PerlIO * const ifp = IoIFP(io); |
866 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
867 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
868 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
869 | } |
870 | return 0; | |
b13b2135 NIS |
871 | } |
872 | ||
873 | static int | |
874 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
875 | { | |
14a5cf38 | 876 | if (SvROK(sv)) { |
159b6efe | 877 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
878 | PerlIO * const ifp = IoIFP(io); |
879 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
880 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
881 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
882 | } |
883 | return 0; | |
b13b2135 NIS |
884 | } |
885 | ||
886 | static int | |
887 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
888 | { | |
be2597df | 889 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 890 | return 0; |
b13b2135 NIS |
891 | } |
892 | ||
893 | static int | |
894 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
895 | { | |
be2597df | 896 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 897 | return 0; |
b13b2135 NIS |
898 | } |
899 | ||
900 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
901 | perlio_mg_get, |
902 | perlio_mg_set, | |
22569500 | 903 | NULL, /* len */ |
14a5cf38 JH |
904 | perlio_mg_clear, |
905 | perlio_mg_free | |
b13b2135 NIS |
906 | }; |
907 | ||
908 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
909 | { | |
14a5cf38 | 910 | dXSARGS; |
dcda55fc AL |
911 | SV * const sv = SvRV(ST(1)); |
912 | AV * const av = newAV(); | |
14a5cf38 JH |
913 | MAGIC *mg; |
914 | int count = 0; | |
915 | int i; | |
ad64d0ec | 916 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
917 | SvRMAGICAL_off(sv); |
918 | mg = mg_find(sv, PERL_MAGIC_ext); | |
919 | mg->mg_virtual = &perlio_vtab; | |
920 | mg_magical(sv); | |
be2597df | 921 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
922 | for (i = 2; i < items; i++) { |
923 | STRLEN len; | |
dcda55fc AL |
924 | const char * const name = SvPV_const(ST(i), len); |
925 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 926 | if (layer) { |
b37c2d43 | 927 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
928 | } |
929 | else { | |
930 | ST(count) = ST(i); | |
931 | count++; | |
932 | } | |
933 | } | |
934 | SvREFCNT_dec(av); | |
935 | XSRETURN(count); | |
936 | } | |
937 | ||
22569500 | 938 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 939 | |
e3f3bf95 NIS |
940 | SV * |
941 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 942 | { |
da51bb9b | 943 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 944 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 945 | return sv; |
e3f3bf95 NIS |
946 | } |
947 | ||
5ca1d77f | 948 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 949 | { |
486ec47a | 950 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
951 | during loading of layers. |
952 | */ | |
97aff369 | 953 | dVAR; |
c9bca74a | 954 | dXSARGS; |
58c0efa5 | 955 | PERL_UNUSED_ARG(cv); |
c9bca74a | 956 | if (items) |
e62f0680 | 957 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
958 | XSRETURN(0); |
959 | } | |
960 | ||
5ca1d77f | 961 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 962 | { |
97aff369 | 963 | dVAR; |
14a5cf38 | 964 | dXSARGS; |
58c0efa5 | 965 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
966 | if (items < 2) |
967 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
968 | else { | |
de009b76 | 969 | STRLEN len; |
46c461b5 | 970 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 971 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 972 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
973 | ST(0) = |
974 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
975 | &PL_sv_undef; | |
976 | XSRETURN(1); | |
977 | } | |
0c4f7ff0 NIS |
978 | } |
979 | ||
e3f3bf95 NIS |
980 | void |
981 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
982 | { | |
97aff369 | 983 | dVAR; |
3a1ee7e8 NIS |
984 | if (!PL_known_layers) |
985 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 986 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 987 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
988 | } |
989 | ||
1141d9f8 | 990 | int |
fcf2db38 | 991 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 992 | { |
97aff369 | 993 | dVAR; |
14a5cf38 JH |
994 | if (names) { |
995 | const char *s = names; | |
996 | while (*s) { | |
997 | while (isSPACE(*s) || *s == ':') | |
998 | s++; | |
999 | if (*s) { | |
1000 | STRLEN llen = 0; | |
1001 | const char *e = s; | |
bd61b366 | 1002 | const char *as = NULL; |
14a5cf38 JH |
1003 | STRLEN alen = 0; |
1004 | if (!isIDFIRST(*s)) { | |
1005 | /* | |
1006 | * Message is consistent with how attribute lists are | |
1007 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 1008 | * seen as an invalid separator character. |
14a5cf38 | 1009 | */ |
de009b76 | 1010 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
1011 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1012 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
1013 | q, *s, q, s); | |
93189314 | 1014 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1015 | return -1; |
1016 | } | |
1017 | do { | |
1018 | e++; | |
1019 | } while (isALNUM(*e)); | |
1020 | llen = e - s; | |
1021 | if (*e == '(') { | |
1022 | int nesting = 1; | |
1023 | as = ++e; | |
1024 | while (nesting) { | |
1025 | switch (*e++) { | |
1026 | case ')': | |
1027 | if (--nesting == 0) | |
1028 | alen = (e - 1) - as; | |
1029 | break; | |
1030 | case '(': | |
1031 | ++nesting; | |
1032 | break; | |
1033 | case '\\': | |
1034 | /* | |
1035 | * It's a nul terminated string, not allowed | |
1036 | * to \ the terminating null. Anything other | |
71200d45 | 1037 | * character is passed over. |
14a5cf38 JH |
1038 | */ |
1039 | if (*e++) { | |
1040 | break; | |
1041 | } | |
1042 | /* | |
71200d45 | 1043 | * Drop through |
14a5cf38 JH |
1044 | */ |
1045 | case '\0': | |
1046 | e--; | |
a2a5de95 NC |
1047 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1048 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
1049 | (int) (e - s), s); | |
14a5cf38 JH |
1050 | return -1; |
1051 | default: | |
1052 | /* | |
71200d45 | 1053 | * boring. |
14a5cf38 JH |
1054 | */ |
1055 | break; | |
1056 | } | |
1057 | } | |
1058 | } | |
1059 | if (e > s) { | |
46c461b5 | 1060 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1061 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1062 | if (layer) { | |
a951d81d BL |
1063 | SV *arg = NULL; |
1064 | if (as) | |
1065 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1066 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 1067 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 1068 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1069 | } |
1070 | else { | |
a2a5de95 NC |
1071 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
1072 | (int) llen, s); | |
14a5cf38 JH |
1073 | return -1; |
1074 | } | |
1075 | } | |
1076 | s = e; | |
1077 | } | |
1078 | } | |
1079 | } | |
1080 | return 0; | |
1141d9f8 NIS |
1081 | } |
1082 | ||
dfebf958 | 1083 | void |
fcf2db38 | 1084 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1085 | { |
97aff369 | 1086 | dVAR; |
27da23d5 | 1087 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1088 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1089 | tab = &PerlIO_crlf; |
846be114 | 1090 | #else |
6ce75a77 | 1091 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1092 | tab = &PerlIO_stdio; |
846be114 | 1093 | #endif |
14a5cf38 | 1094 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1095 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1096 | &PL_sv_undef); |
dfebf958 NIS |
1097 | } |
1098 | ||
e3f3bf95 | 1099 | SV * |
14a5cf38 | 1100 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1101 | { |
14a5cf38 | 1102 | return av->array[n].arg; |
e3f3bf95 NIS |
1103 | } |
1104 | ||
f3862f8b | 1105 | PerlIO_funcs * |
14a5cf38 | 1106 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1107 | { |
14a5cf38 JH |
1108 | if (n >= 0 && n < av->cur) { |
1109 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1110 | av->array[n].funcs->name); | |
1111 | return av->array[n].funcs; | |
1112 | } | |
1113 | if (!def) | |
1114 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1115 | return def; | |
e3f3bf95 NIS |
1116 | } |
1117 | ||
4ec2216f NIS |
1118 | IV |
1119 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1120 | { | |
8772537c AL |
1121 | PERL_UNUSED_ARG(mode); |
1122 | PERL_UNUSED_ARG(arg); | |
1123 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1124 | if (PerlIOValid(f)) { |
1125 | PerlIO_flush(f); | |
1126 | PerlIO_pop(aTHX_ f); | |
1127 | return 0; | |
1128 | } | |
1129 | return -1; | |
1130 | } | |
1131 | ||
27da23d5 | 1132 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1133 | sizeof(PerlIO_funcs), |
1134 | "pop", | |
1135 | 0, | |
1136 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1137 | PerlIOPop_pushed, | |
1138 | NULL, | |
c0888ace | 1139 | PerlIOBase_open, |
4ec2216f NIS |
1140 | NULL, |
1141 | NULL, | |
1142 | NULL, | |
1143 | NULL, | |
1144 | NULL, | |
1145 | NULL, | |
1146 | NULL, | |
1147 | NULL, | |
de009b76 AL |
1148 | NULL, |
1149 | NULL, | |
4ec2216f NIS |
1150 | NULL, /* flush */ |
1151 | NULL, /* fill */ | |
1152 | NULL, | |
1153 | NULL, | |
1154 | NULL, | |
1155 | NULL, | |
1156 | NULL, /* get_base */ | |
1157 | NULL, /* get_bufsiz */ | |
1158 | NULL, /* get_ptr */ | |
1159 | NULL, /* get_cnt */ | |
1160 | NULL, /* set_ptrcnt */ | |
1161 | }; | |
1162 | ||
fcf2db38 | 1163 | PerlIO_list_t * |
e3f3bf95 NIS |
1164 | PerlIO_default_layers(pTHX) |
1165 | { | |
97aff369 | 1166 | dVAR; |
3a1ee7e8 | 1167 | if (!PL_def_layerlist) { |
bd61b366 | 1168 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1169 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1170 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1171 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1172 | #if defined(WIN32) |
27da23d5 | 1173 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1174 | #if 0 |
14a5cf38 | 1175 | osLayer = &PerlIO_win32; |
0c4128ad | 1176 | #endif |
2f8118af | 1177 | #endif |
27da23d5 JH |
1178 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1179 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1180 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1181 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1182 | #ifdef HAS_MMAP |
27da23d5 | 1183 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1184 | #endif |
27da23d5 JH |
1185 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1186 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1187 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1188 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1189 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1190 | &PL_sv_undef); | |
1191 | if (s) { | |
3a1ee7e8 | 1192 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1193 | } |
1194 | else { | |
3a1ee7e8 | 1195 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1196 | } |
1141d9f8 | 1197 | } |
3a1ee7e8 NIS |
1198 | if (PL_def_layerlist->cur < 2) { |
1199 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1200 | } |
3a1ee7e8 | 1201 | return PL_def_layerlist; |
e3f3bf95 NIS |
1202 | } |
1203 | ||
0c4f7ff0 NIS |
1204 | void |
1205 | Perl_boot_core_PerlIO(pTHX) | |
1206 | { | |
1207 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1208 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1209 | __FILE__); | |
0c4f7ff0 | 1210 | #endif |
14a5cf38 | 1211 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1212 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1213 | } |
e3f3bf95 NIS |
1214 | |
1215 | PerlIO_funcs * | |
1216 | PerlIO_default_layer(pTHX_ I32 n) | |
1217 | { | |
97aff369 | 1218 | dVAR; |
46c461b5 | 1219 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1220 | if (n < 0) |
1221 | n += av->cur; | |
27da23d5 | 1222 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1223 | } |
1224 | ||
a999f61b NIS |
1225 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1226 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1227 | |
1228 | void | |
1141d9f8 | 1229 | PerlIO_stdstreams(pTHX) |
60382766 | 1230 | { |
97aff369 | 1231 | dVAR; |
a1ea730d | 1232 | if (!PL_perlio) { |
8995e67d | 1233 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1234 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1235 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1236 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1237 | } | |
60382766 NIS |
1238 | } |
1239 | ||
1240 | PerlIO * | |
27da23d5 | 1241 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1242 | { |
16865ff7 | 1243 | VERIFY_HEAD(f); |
2dc2558e | 1244 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1245 | Perl_croak( aTHX_ |
5cf96513 RB |
1246 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1247 | "PerlIO layer function table size", (UV)tab->fsize, | |
1248 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1249 | } |
1250 | if (tab->size) { | |
b464bac0 | 1251 | PerlIOl *l; |
2dc2558e | 1252 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1253 | Perl_croak( aTHX_ |
5cf96513 RB |
1254 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1255 | "PerlIO layer instance size", (UV)tab->size, | |
1256 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1257 | } |
1258 | /* Real layer with a data area */ | |
002e75cf JH |
1259 | if (f) { |
1260 | char *temp; | |
1261 | Newxz(temp, tab->size, char); | |
1262 | l = (PerlIOl*)temp; | |
1263 | if (l) { | |
1264 | l->next = *f; | |
1265 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1266 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1267 | *f = l; |
1268 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1269 | (void*)f, tab->name, | |
1270 | (mode) ? mode : "(Null)", (void*)arg); | |
1271 | if (*l->tab->Pushed && | |
1272 | (*l->tab->Pushed) | |
1273 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1274 | PerlIO_pop(aTHX_ f); | |
1275 | return NULL; | |
1276 | } | |
2dc2558e | 1277 | } |
002e75cf JH |
1278 | else |
1279 | return NULL; | |
2dc2558e NIS |
1280 | } |
1281 | } | |
1282 | else if (f) { | |
1283 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1284 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1285 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1286 | if (tab->Pushed && |
27da23d5 | 1287 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1288 | return NULL; |
14a5cf38 JH |
1289 | } |
1290 | } | |
1291 | return f; | |
60382766 NIS |
1292 | } |
1293 | ||
81fe74fb LT |
1294 | PerlIO * |
1295 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1296 | IV n, const char *mode, int fd, int imode, int perm, | |
1297 | PerlIO *old, int narg, SV **args) | |
1298 | { | |
1299 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1300 | if (tab && tab->Open) { | |
1301 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1302 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1303 | PerlIO_close(ret); |
1304 | return NULL; | |
1305 | } | |
1306 | return ret; | |
1307 | } | |
1308 | SETERRNO(EINVAL, LIB_INVARG); | |
1309 | return NULL; | |
1310 | } | |
1311 | ||
dfebf958 | 1312 | IV |
86e05cf2 NIS |
1313 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1314 | { | |
1315 | if (PerlIOValid(f)) { | |
1316 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1317 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1318 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1319 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1320 | } | |
1321 | else { | |
1322 | /* Not suitable - pop it */ | |
1323 | PerlIO_pop(aTHX_ f); | |
1324 | } | |
1325 | return 0; | |
1326 | } | |
1327 | return -1; | |
1328 | } | |
1329 | ||
1330 | IV | |
2dc2558e | 1331 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1332 | { |
8772537c AL |
1333 | PERL_UNUSED_ARG(mode); |
1334 | PERL_UNUSED_ARG(arg); | |
1335 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1336 | |
04892f78 | 1337 | if (PerlIOValid(f)) { |
86e05cf2 | 1338 | PerlIO *t; |
de009b76 | 1339 | const PerlIOl *l; |
14a5cf38 | 1340 | PerlIO_flush(f); |
86e05cf2 NIS |
1341 | /* |
1342 | * Strip all layers that are not suitable for a raw stream | |
1343 | */ | |
1344 | t = f; | |
1345 | while (t && (l = *t)) { | |
cc6623a8 | 1346 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1347 | /* Has a handler - normal case */ |
9d97e8b8 | 1348 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1349 | if (*t == l) { |
1350 | /* Layer still there - move down a layer */ | |
1351 | t = PerlIONext(t); | |
1352 | } | |
1353 | } | |
1354 | else { | |
1355 | return -1; | |
1356 | } | |
14a5cf38 JH |
1357 | } |
1358 | else { | |
86e05cf2 NIS |
1359 | /* No handler - pop it */ |
1360 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1361 | } |
1362 | } | |
86e05cf2 | 1363 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1364 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1365 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1366 | return 0; |
1367 | } | |
14a5cf38 JH |
1368 | } |
1369 | return -1; | |
dfebf958 NIS |
1370 | } |
1371 | ||
ac27b0f5 | 1372 | int |
14a5cf38 | 1373 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1374 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1375 | { |
14a5cf38 JH |
1376 | int code = 0; |
1377 | while (n < max) { | |
8772537c | 1378 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1379 | if (tab) { |
1380 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1381 | code = -1; | |
1382 | break; | |
1383 | } | |
1384 | } | |
1385 | n++; | |
1386 | } | |
1387 | return code; | |
e3f3bf95 NIS |
1388 | } |
1389 | ||
1390 | int | |
ac27b0f5 NIS |
1391 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1392 | { | |
14a5cf38 | 1393 | int code = 0; |
da0fccaa DG |
1394 | ENTER; |
1395 | save_scalar(PL_errgv); | |
53f1b6d2 | 1396 | if (f && names) { |
8772537c | 1397 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1398 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1399 | if (code == 0) { | |
d9dac8cd | 1400 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1401 | } |
3a1ee7e8 | 1402 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1403 | } |
da0fccaa | 1404 | LEAVE; |
14a5cf38 | 1405 | return code; |
ac27b0f5 NIS |
1406 | } |
1407 | ||
f3862f8b | 1408 | |
60382766 | 1409 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1410 | /* |
71200d45 | 1411 | * Given the abstraction above the public API functions |
14a5cf38 | 1412 | */ |
60382766 NIS |
1413 | |
1414 | int | |
f5b9d040 | 1415 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1416 | { |
68b5363f | 1417 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1418 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1419 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1420 | iotype, mode, (names) ? names : "(Null)"); |
1421 | ||
03c0554d NIS |
1422 | if (names) { |
1423 | /* Do not flush etc. if (e.g.) switching encodings. | |
1424 | if a pushed layer knows it needs to flush lower layers | |
1425 | (for example :unix which is never going to call them) | |
1426 | it can do the flush when it is pushed. | |
1427 | */ | |
1428 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1429 | } | |
1430 | else { | |
86e05cf2 | 1431 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1432 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1433 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1434 | O_BINARY so we can look for it in mode. | |
1435 | */ | |
1436 | if (!(mode & O_BINARY)) { | |
1437 | /* Text mode */ | |
86e05cf2 NIS |
1438 | /* FIXME?: Looking down the layer stack seems wrong, |
1439 | but is a way of reaching past (say) an encoding layer | |
1440 | to flip CRLF-ness of the layer(s) below | |
1441 | */ | |
03c0554d NIS |
1442 | while (*f) { |
1443 | /* Perhaps we should turn on bottom-most aware layer | |
1444 | e.g. Ilya's idea that UNIX TTY could serve | |
1445 | */ | |
cc6623a8 DM |
1446 | if (PerlIOBase(f)->tab && |
1447 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1448 | { | |
03c0554d NIS |
1449 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1450 | /* Not in text mode - flush any pending stuff and flip it */ | |
1451 | PerlIO_flush(f); | |
1452 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1453 | } | |
1454 | /* Only need to turn it on in one layer so we are done */ | |
1455 | return TRUE; | |
ed53a2bb | 1456 | } |
03c0554d | 1457 | f = PerlIONext(f); |
14a5cf38 | 1458 | } |
03c0554d NIS |
1459 | /* Not finding a CRLF aware layer presumably means we are binary |
1460 | which is not what was requested - so we failed | |
1461 | We _could_ push :crlf layer but so could caller | |
1462 | */ | |
1463 | return FALSE; | |
14a5cf38 | 1464 | } |
6ce75a77 | 1465 | #endif |
86e05cf2 NIS |
1466 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1467 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1468 | */ |
a0714e2c | 1469 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1470 | } |
f5b9d040 NIS |
1471 | } |
1472 | ||
f5b9d040 | 1473 | int |
e87a358a | 1474 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1475 | { |
37725cdc | 1476 | if (PerlIOValid(f)) { |
46c461b5 | 1477 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1478 | if (tab && tab->Close) |
1479 | return (*tab->Close)(aTHX_ f); | |
1480 | else | |
1481 | return PerlIOBase_close(aTHX_ f); | |
1482 | } | |
14a5cf38 | 1483 | else { |
93189314 | 1484 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1485 | return -1; |
1486 | } | |
76ced9ad NIS |
1487 | } |
1488 | ||
b931b1d9 | 1489 | int |
e87a358a | 1490 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1491 | { |
de009b76 | 1492 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1493 | while (PerlIOValid(f)) { |
1494 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1495 | if (PerlIO_lockcnt(f)) |
1496 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1497 | f = PerlIONext(f); | |
f6c77cf1 | 1498 | } |
14a5cf38 | 1499 | return code; |
b931b1d9 NIS |
1500 | } |
1501 | ||
b931b1d9 | 1502 | int |
e87a358a | 1503 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1504 | { |
97aff369 | 1505 | dVAR; |
b32dd47e | 1506 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1507 | } |
1508 | ||
1141d9f8 | 1509 | |
fcf2db38 | 1510 | static PerlIO_funcs * |
2edd7e44 NIS |
1511 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1512 | { | |
97aff369 | 1513 | dVAR; |
14a5cf38 | 1514 | /* |
71200d45 | 1515 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1516 | */ |
526fd1b4 | 1517 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1518 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1519 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1520 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 NC |
1521 | if (!f) |
1522 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); | |
75208dda RGS |
1523 | return f; |
1524 | } | |
14a5cf38 JH |
1525 | |
1526 | /* | |
71200d45 | 1527 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1528 | */ |
1529 | switch (SvTYPE(sv)) { | |
1530 | case SVt_PVAV: | |
6a245ed1 | 1531 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1532 | case SVt_PVHV: |
6a245ed1 | 1533 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1534 | case SVt_PVCV: |
6a245ed1 | 1535 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1536 | case SVt_PVGV: |
6a245ed1 | 1537 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1538 | default: |
1539 | return NULL; | |
14a5cf38 | 1540 | } |
2edd7e44 NIS |
1541 | } |
1542 | ||
fcf2db38 | 1543 | PerlIO_list_t * |
14a5cf38 JH |
1544 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1545 | const char *mode, int narg, SV **args) | |
1546 | { | |
97aff369 | 1547 | dVAR; |
14a5cf38 JH |
1548 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1549 | int incdef = 1; | |
a1ea730d | 1550 | if (!PL_perlio) |
14a5cf38 JH |
1551 | PerlIO_stdstreams(aTHX); |
1552 | if (narg) { | |
dcda55fc | 1553 | SV * const arg = *args; |
14a5cf38 | 1554 | /* |
71200d45 NIS |
1555 | * If it is a reference but not an object see if we have a handler |
1556 | * for it | |
14a5cf38 JH |
1557 | */ |
1558 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1559 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1560 | if (handler) { |
3a1ee7e8 NIS |
1561 | def = PerlIO_list_alloc(aTHX); |
1562 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1563 | incdef = 0; |
1564 | } | |
1565 | /* | |
e934609f | 1566 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1567 | * something sensible else we will just stringfy and open |
71200d45 | 1568 | * resulting string. |
14a5cf38 JH |
1569 | */ |
1570 | } | |
1571 | } | |
9fe371da | 1572 | if (!layers || !*layers) |
11bcd5da | 1573 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1574 | if (layers && *layers) { |
1575 | PerlIO_list_t *av; | |
1576 | if (incdef) { | |
a951d81d | 1577 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1578 | } |
1579 | else { | |
1580 | av = def; | |
1581 | } | |
0cff2cf3 NIS |
1582 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1583 | return av; | |
1584 | } | |
1585 | else { | |
1586 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1587 | return NULL; |
0cff2cf3 | 1588 | } |
14a5cf38 JH |
1589 | } |
1590 | else { | |
1591 | if (incdef) | |
1592 | def->refcnt++; | |
1593 | return def; | |
1594 | } | |
ee518936 NIS |
1595 | } |
1596 | ||
1597 | PerlIO * | |
14a5cf38 JH |
1598 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1599 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1600 | { | |
97aff369 | 1601 | dVAR; |
14a5cf38 JH |
1602 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1603 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1604 | if (!layers || !*layers) |
11bcd5da | 1605 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1606 | if (layers && *layers) |
1607 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1608 | } | |
1609 | } | |
1610 | else { | |
de009b76 | 1611 | PerlIO_list_t *layera; |
14a5cf38 JH |
1612 | IV n; |
1613 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1614 | if (PerlIOValid(f)) { |
14a5cf38 | 1615 | /* |
71200d45 NIS |
1616 | * This is "reopen" - it is not tested as perl does not use it |
1617 | * yet | |
14a5cf38 JH |
1618 | */ |
1619 | PerlIOl *l = *f; | |
3a1ee7e8 | 1620 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1621 | while (l) { |
a951d81d | 1622 | SV *arg = NULL; |
cc6623a8 | 1623 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1624 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1625 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1626 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1627 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1628 | l = *PerlIONext(&l); |
1629 | } | |
1630 | } | |
1631 | else { | |
1632 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1633 | if (!layera) { |
1634 | return NULL; | |
1635 | } | |
14a5cf38 JH |
1636 | } |
1637 | /* | |
71200d45 | 1638 | * Start at "top" of layer stack |
14a5cf38 JH |
1639 | */ |
1640 | n = layera->cur - 1; | |
1641 | while (n >= 0) { | |
46c461b5 | 1642 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1643 | if (t && t->Open) { |
1644 | tab = t; | |
1645 | break; | |
1646 | } | |
1647 | n--; | |
1648 | } | |
1649 | if (tab) { | |
1650 | /* | |
71200d45 | 1651 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1652 | */ |
7cf31beb | 1653 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1654 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1655 | } |
14a5cf38 | 1656 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1657 | tab->name, layers ? layers : "(Null)", mode, fd, |
1658 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1659 | if (tab->Open) |
1660 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1661 | f, narg, args); | |
1662 | else { | |
1663 | SETERRNO(EINVAL, LIB_INVARG); | |
1664 | f = NULL; | |
1665 | } | |
14a5cf38 JH |
1666 | if (f) { |
1667 | if (n + 1 < layera->cur) { | |
1668 | /* | |
1669 | * More layers above the one that we used to open - | |
71200d45 | 1670 | * apply them now |
14a5cf38 | 1671 | */ |
d9dac8cd NIS |
1672 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1673 | /* If pushing layers fails close the file */ | |
1674 | PerlIO_close(f); | |
14a5cf38 JH |
1675 | f = NULL; |
1676 | } | |
1677 | } | |
1678 | } | |
1679 | } | |
3a1ee7e8 | 1680 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1681 | } |
1682 | return f; | |
ee518936 | 1683 | } |
b931b1d9 NIS |
1684 | |
1685 | ||
9e353e3b | 1686 | SSize_t |
e87a358a | 1687 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1688 | { |
7918f24d NC |
1689 | PERL_ARGS_ASSERT_PERLIO_READ; |
1690 | ||
b32dd47e | 1691 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1692 | } |
1693 | ||
313ca112 | 1694 | SSize_t |
e87a358a | 1695 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1696 | { |
7918f24d NC |
1697 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1698 | ||
b32dd47e | 1699 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1700 | } |
1701 | ||
9e353e3b | 1702 | SSize_t |
e87a358a | 1703 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1704 | { |
7918f24d NC |
1705 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1706 | ||
b32dd47e | 1707 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1708 | } |
1709 | ||
6f9d8c32 | 1710 | int |
e87a358a | 1711 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1712 | { |
b32dd47e | 1713 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1714 | } |
1715 | ||
9e353e3b | 1716 | Off_t |
e87a358a | 1717 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1718 | { |
b32dd47e | 1719 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1720 | } |
1721 | ||
6f9d8c32 | 1722 | int |
e87a358a | 1723 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1724 | { |
97aff369 | 1725 | dVAR; |
14a5cf38 JH |
1726 | if (f) { |
1727 | if (*f) { | |
de009b76 | 1728 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1729 | |
1730 | if (tab && tab->Flush) | |
f62ce20a | 1731 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1732 | else |
1733 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1734 | } |
1735 | else { | |
fe5a182c | 1736 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1737 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1738 | return -1; |
1739 | } | |
1740 | } | |
1741 | else { | |
1742 | /* | |
1743 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1744 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1745 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1746 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1747 | * decisions? --jhi |
14a5cf38 | 1748 | */ |
303f2dc3 DM |
1749 | PerlIOl **table = &PL_perlio; |
1750 | PerlIOl *ff; | |
14a5cf38 | 1751 | int code = 0; |
303f2dc3 | 1752 | while ((ff = *table)) { |
14a5cf38 | 1753 | int i; |
303f2dc3 | 1754 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1755 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1756 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1757 | code = -1; |
303f2dc3 | 1758 | ff++; |
14a5cf38 JH |
1759 | } |
1760 | } | |
1761 | return code; | |
1762 | } | |
760ac839 LW |
1763 | } |
1764 | ||
a9c883f6 | 1765 | void |
f62ce20a | 1766 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1767 | { |
97aff369 | 1768 | dVAR; |
303f2dc3 DM |
1769 | PerlIOl **table = &PL_perlio; |
1770 | PerlIOl *f; | |
14a5cf38 JH |
1771 | while ((f = *table)) { |
1772 | int i; | |
303f2dc3 | 1773 | table = (PerlIOl **) (f++); |
14a5cf38 | 1774 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1775 | if (f->next |
1776 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1777 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1778 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1779 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1780 | f++; |
1781 | } | |
a9c883f6 | 1782 | } |
a9c883f6 NIS |
1783 | } |
1784 | ||
06da4f11 | 1785 | int |
e87a358a | 1786 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1787 | { |
b32dd47e | 1788 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1789 | } |
1790 | ||
f3862f8b NIS |
1791 | int |
1792 | PerlIO_isutf8(PerlIO *f) | |
1793 | { | |
1b7a0411 JH |
1794 | if (PerlIOValid(f)) |
1795 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1796 | else | |
1797 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1798 | |
1b7a0411 | 1799 | return -1; |
f3862f8b NIS |
1800 | } |
1801 | ||
6f9d8c32 | 1802 | int |
e87a358a | 1803 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1804 | { |
b32dd47e | 1805 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1806 | } |
1807 | ||
9e353e3b | 1808 | int |
e87a358a | 1809 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1810 | { |
b32dd47e | 1811 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1812 | } |
1813 | ||
9e353e3b | 1814 | void |
e87a358a | 1815 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1816 | { |
b32dd47e | 1817 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1818 | } |
1819 | ||
9e353e3b | 1820 | void |
e87a358a | 1821 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1822 | { |
b32dd47e | 1823 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1824 | } |
1825 | ||
9e353e3b NIS |
1826 | int |
1827 | PerlIO_has_base(PerlIO *f) | |
1828 | { | |
1b7a0411 | 1829 | if (PerlIOValid(f)) { |
46c461b5 | 1830 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1831 | |
1832 | if (tab) | |
1833 | return (tab->Get_base != NULL); | |
1b7a0411 | 1834 | } |
1b7a0411 JH |
1835 | |
1836 | return 0; | |
760ac839 LW |
1837 | } |
1838 | ||
9e353e3b NIS |
1839 | int |
1840 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1841 | { |
d7dfc388 SK |
1842 | if (PerlIOValid(f)) { |
1843 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1844 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1845 | |
d7dfc388 SK |
1846 | if (tab) |
1847 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1848 | } |
14a5cf38 | 1849 | } |
1b7a0411 | 1850 | |
14a5cf38 | 1851 | return 0; |
9e353e3b NIS |
1852 | } |
1853 | ||
9e353e3b NIS |
1854 | int |
1855 | PerlIO_has_cntptr(PerlIO *f) | |
1856 | { | |
04892f78 | 1857 | if (PerlIOValid(f)) { |
46c461b5 | 1858 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1859 | |
1860 | if (tab) | |
1861 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1862 | } |
1b7a0411 | 1863 | |
14a5cf38 | 1864 | return 0; |
9e353e3b NIS |
1865 | } |
1866 | ||
9e353e3b NIS |
1867 | int |
1868 | PerlIO_canset_cnt(PerlIO *f) | |
1869 | { | |
04892f78 | 1870 | if (PerlIOValid(f)) { |
46c461b5 | 1871 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1872 | |
1873 | if (tab) | |
1874 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1875 | } |
1b7a0411 | 1876 | |
14a5cf38 | 1877 | return 0; |
760ac839 LW |
1878 | } |
1879 | ||
888911fc | 1880 | STDCHAR * |
e87a358a | 1881 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1882 | { |
b32dd47e | 1883 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1884 | } |
1885 | ||
9e353e3b | 1886 | int |
e87a358a | 1887 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1888 | { |
b32dd47e | 1889 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1890 | } |
1891 | ||
9e353e3b | 1892 | STDCHAR * |
e87a358a | 1893 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1894 | { |
b32dd47e | 1895 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1896 | } |
1897 | ||
05d1247b | 1898 | int |
e87a358a | 1899 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1900 | { |
b32dd47e | 1901 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1902 | } |
1903 | ||
9e353e3b | 1904 | void |
e87a358a | 1905 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1906 | { |
b32dd47e | 1907 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1908 | } |
1909 | ||
9e353e3b | 1910 | void |
e87a358a | 1911 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1912 | { |
b32dd47e | 1913 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1914 | } |
1915 | ||
4ec2216f | 1916 | |
9e353e3b | 1917 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1918 | /* |
71200d45 | 1919 | * utf8 and raw dummy layers |
14a5cf38 | 1920 | */ |
dfebf958 | 1921 | |
26fb694e | 1922 | IV |
2dc2558e | 1923 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1924 | { |
96a5add6 | 1925 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1926 | PERL_UNUSED_ARG(mode); |
1927 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1928 | if (PerlIOValid(f)) { |
cc6623a8 | 1929 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1930 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1931 | else | |
1932 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1933 | return 0; | |
1934 | } | |
1935 | return -1; | |
26fb694e NIS |
1936 | } |
1937 | ||
27da23d5 | 1938 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1939 | sizeof(PerlIO_funcs), |
14a5cf38 | 1940 | "utf8", |
2dc2558e | 1941 | 0, |
a778d1f5 | 1942 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1943 | PerlIOUtf8_pushed, |
1944 | NULL, | |
c0888ace | 1945 | PerlIOBase_open, |
14a5cf38 JH |
1946 | NULL, |
1947 | NULL, | |
1948 | NULL, | |
1949 | NULL, | |
1950 | NULL, | |
1951 | NULL, | |
1952 | NULL, | |
1953 | NULL, | |
de009b76 AL |
1954 | NULL, |
1955 | NULL, | |
22569500 NIS |
1956 | NULL, /* flush */ |
1957 | NULL, /* fill */ | |
14a5cf38 JH |
1958 | NULL, |
1959 | NULL, | |
1960 | NULL, | |
1961 | NULL, | |
22569500 NIS |
1962 | NULL, /* get_base */ |
1963 | NULL, /* get_bufsiz */ | |
1964 | NULL, /* get_ptr */ | |
1965 | NULL, /* get_cnt */ | |
1966 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1967 | }; |
1968 | ||
27da23d5 | 1969 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1970 | sizeof(PerlIO_funcs), |
14a5cf38 | 1971 | "bytes", |
2dc2558e | 1972 | 0, |
a778d1f5 | 1973 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1974 | PerlIOUtf8_pushed, |
1975 | NULL, | |
c0888ace | 1976 | PerlIOBase_open, |
14a5cf38 JH |
1977 | NULL, |
1978 | NULL, | |
1979 | NULL, | |
1980 | NULL, | |
1981 | NULL, | |
1982 | NULL, | |
1983 | NULL, | |
1984 | NULL, | |
de009b76 AL |
1985 | NULL, |
1986 | NULL, | |
22569500 NIS |
1987 | NULL, /* flush */ |
1988 | NULL, /* fill */ | |
14a5cf38 JH |
1989 | NULL, |
1990 | NULL, | |
1991 | NULL, | |
1992 | NULL, | |
22569500 NIS |
1993 | NULL, /* get_base */ |
1994 | NULL, /* get_bufsiz */ | |
1995 | NULL, /* get_ptr */ | |
1996 | NULL, /* get_cnt */ | |
1997 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1998 | }; |
1999 | ||
27da23d5 | 2000 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 2001 | sizeof(PerlIO_funcs), |
14a5cf38 | 2002 | "raw", |
2dc2558e | 2003 | 0, |
14a5cf38 JH |
2004 | PERLIO_K_DUMMY, |
2005 | PerlIORaw_pushed, | |
2006 | PerlIOBase_popped, | |
ecfd0649 | 2007 | PerlIOBase_open, |
14a5cf38 JH |
2008 | NULL, |
2009 | NULL, | |
2010 | NULL, | |
2011 | NULL, | |
2012 | NULL, | |
2013 | NULL, | |
2014 | NULL, | |
2015 | NULL, | |
de009b76 AL |
2016 | NULL, |
2017 | NULL, | |
22569500 NIS |
2018 | NULL, /* flush */ |
2019 | NULL, /* fill */ | |
14a5cf38 JH |
2020 | NULL, |
2021 | NULL, | |
2022 | NULL, | |
2023 | NULL, | |
22569500 NIS |
2024 | NULL, /* get_base */ |
2025 | NULL, /* get_bufsiz */ | |
2026 | NULL, /* get_ptr */ | |
2027 | NULL, /* get_cnt */ | |
2028 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
2029 | }; |
2030 | /*--------------------------------------------------------------------------------------*/ | |
2031 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2032 | /* |
71200d45 | 2033 | * "Methods" of the "base class" |
14a5cf38 | 2034 | */ |
9e353e3b NIS |
2035 | |
2036 | IV | |
f62ce20a | 2037 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2038 | { |
04892f78 | 2039 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
2040 | } |
2041 | ||
f5b9d040 | 2042 | char * |
81428673 | 2043 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
2044 | { |
2045 | char *s = buf; | |
81428673 | 2046 | if (PerlIOValid(f)) { |
de009b76 | 2047 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2048 | if (flags & PERLIO_F_APPEND) { |
2049 | *s++ = 'a'; | |
2050 | if (flags & PERLIO_F_CANREAD) { | |
2051 | *s++ = '+'; | |
2052 | } | |
14a5cf38 | 2053 | } |
81428673 NIS |
2054 | else if (flags & PERLIO_F_CANREAD) { |
2055 | *s++ = 'r'; | |
2056 | if (flags & PERLIO_F_CANWRITE) | |
2057 | *s++ = '+'; | |
2058 | } | |
2059 | else if (flags & PERLIO_F_CANWRITE) { | |
2060 | *s++ = 'w'; | |
2061 | if (flags & PERLIO_F_CANREAD) { | |
2062 | *s++ = '+'; | |
2063 | } | |
14a5cf38 | 2064 | } |
35990314 | 2065 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2066 | if (!(flags & PERLIO_F_CRLF)) |
2067 | *s++ = 'b'; | |
5f1a76d0 | 2068 | #endif |
81428673 | 2069 | } |
14a5cf38 JH |
2070 | *s = '\0'; |
2071 | return buf; | |
f5b9d040 NIS |
2072 | } |
2073 | ||
81428673 | 2074 | |
76ced9ad | 2075 | IV |
2dc2558e | 2076 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2077 | { |
de009b76 | 2078 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2079 | PERL_UNUSED_CONTEXT; |
8772537c | 2080 | PERL_UNUSED_ARG(arg); |
de009b76 | 2081 | |
14a5cf38 JH |
2082 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2083 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 2084 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
2085 | l->flags |= PERLIO_F_FASTGETS; |
2086 | if (mode) { | |
3b6c1aba | 2087 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2088 | mode++; |
2089 | switch (*mode++) { | |
2090 | case 'r': | |
2091 | l->flags |= PERLIO_F_CANREAD; | |
2092 | break; | |
2093 | case 'a': | |
2094 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2095 | break; | |
2096 | case 'w': | |
2097 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2098 | break; | |
2099 | default: | |
93189314 | 2100 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2101 | return -1; |
2102 | } | |
2103 | while (*mode) { | |
2104 | switch (*mode++) { | |
2105 | case '+': | |
2106 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2107 | break; | |
2108 | case 'b': | |
2109 | l->flags &= ~PERLIO_F_CRLF; | |
2110 | break; | |
2111 | case 't': | |
2112 | l->flags |= PERLIO_F_CRLF; | |
2113 | break; | |
2114 | default: | |
93189314 | 2115 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2116 | return -1; |
2117 | } | |
2118 | } | |
2119 | } | |
2120 | else { | |
2121 | if (l->next) { | |
2122 | l->flags |= l->next->flags & | |
2123 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2124 | PERLIO_F_APPEND); | |
2125 | } | |
2126 | } | |
5e2ab84b | 2127 | #if 0 |
14a5cf38 | 2128 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2129 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2130 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2131 | #endif |
14a5cf38 | 2132 | return 0; |
76ced9ad NIS |
2133 | } |
2134 | ||
2135 | IV | |
f62ce20a | 2136 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2137 | { |
96a5add6 | 2138 | PERL_UNUSED_CONTEXT; |
8772537c | 2139 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2140 | return 0; |
760ac839 LW |
2141 | } |
2142 | ||
9e353e3b | 2143 | SSize_t |
f62ce20a | 2144 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2145 | { |
14a5cf38 | 2146 | /* |
71200d45 | 2147 | * Save the position as current head considers it |
14a5cf38 | 2148 | */ |
de009b76 | 2149 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2150 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2151 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2152 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2153 | } |
2154 | ||
f6c77cf1 | 2155 | SSize_t |
f62ce20a | 2156 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2157 | { |
14a5cf38 JH |
2158 | STDCHAR *buf = (STDCHAR *) vbuf; |
2159 | if (f) { | |
263df5f1 JH |
2160 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2161 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2162 | SETERRNO(EBADF, SS_IVCHAN); | |
2163 | return 0; | |
2164 | } | |
14a5cf38 | 2165 | while (count > 0) { |
93c2c2ec IZ |
2166 | get_cnt: |
2167 | { | |
14a5cf38 JH |
2168 | SSize_t avail = PerlIO_get_cnt(f); |
2169 | SSize_t take = 0; | |
2170 | if (avail > 0) | |
bb7a0f54 | 2171 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2172 | if (take > 0) { |
2173 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2174 | Copy(ptr, buf, take, STDCHAR); | |
2175 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2176 | count -= take; | |
2177 | buf += take; | |
93c2c2ec IZ |
2178 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2179 | goto get_cnt; | |
14a5cf38 JH |
2180 | } |
2181 | if (count > 0 && avail <= 0) { | |
2182 | if (PerlIO_fill(f) != 0) | |
2183 | break; | |
2184 | } | |
93c2c2ec | 2185 | } |
14a5cf38 JH |
2186 | } |
2187 | return (buf - (STDCHAR *) vbuf); | |
2188 | } | |
f6c77cf1 | 2189 | return 0; |
f6c77cf1 NIS |
2190 | } |
2191 | ||
9e353e3b | 2192 | IV |
f62ce20a | 2193 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2194 | { |
96a5add6 | 2195 | PERL_UNUSED_CONTEXT; |
8772537c | 2196 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2197 | return 0; |
9e353e3b NIS |
2198 | } |
2199 | ||
2200 | IV | |
f62ce20a | 2201 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2202 | { |
96a5add6 | 2203 | PERL_UNUSED_CONTEXT; |
8772537c | 2204 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2205 | return -1; |
06da4f11 NIS |
2206 | } |
2207 | ||
2208 | IV | |
f62ce20a | 2209 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2210 | { |
37725cdc NIS |
2211 | IV code = -1; |
2212 | if (PerlIOValid(f)) { | |
2213 | PerlIO *n = PerlIONext(f); | |
2214 | code = PerlIO_flush(f); | |
2215 | PerlIOBase(f)->flags &= | |
2216 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2217 | while (PerlIOValid(n)) { | |
de009b76 | 2218 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2219 | if (tab && tab->Close) { |
2220 | if ((*tab->Close)(aTHX_ n) != 0) | |
2221 | code = -1; | |
2222 | break; | |
2223 | } | |
2224 | else { | |
2225 | PerlIOBase(n)->flags &= | |
2226 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2227 | } | |
2228 | n = PerlIONext(n); | |
2229 | } | |
2230 | } | |
2231 | else { | |
2232 | SETERRNO(EBADF, SS_IVCHAN); | |
2233 | } | |
14a5cf38 | 2234 | return code; |
9e353e3b NIS |
2235 | } |
2236 | ||
2237 | IV | |
f62ce20a | 2238 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2239 | { |
96a5add6 | 2240 | PERL_UNUSED_CONTEXT; |
04892f78 | 2241 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2242 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2243 | } | |
2244 | return 1; | |
9e353e3b NIS |
2245 | } |
2246 | ||
2247 | IV | |
f62ce20a | 2248 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2249 | { |
96a5add6 | 2250 | PERL_UNUSED_CONTEXT; |
04892f78 | 2251 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2252 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2253 | } | |
2254 | return 1; | |
9e353e3b NIS |
2255 | } |
2256 | ||
2257 | void | |
f62ce20a | 2258 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2259 | { |
04892f78 | 2260 | if (PerlIOValid(f)) { |
dcda55fc | 2261 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2262 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2263 | if (PerlIOValid(n)) |
14a5cf38 JH |
2264 | PerlIO_clearerr(n); |
2265 | } | |
9e353e3b NIS |
2266 | } |
2267 | ||
2268 | void | |
f62ce20a | 2269 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2270 | { |
96a5add6 | 2271 | PERL_UNUSED_CONTEXT; |
04892f78 | 2272 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2273 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2274 | } | |
9e353e3b NIS |
2275 | } |
2276 | ||
93a8090d NIS |
2277 | SV * |
2278 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2279 | { | |
2280 | if (!arg) | |
a0714e2c | 2281 | return NULL; |
93a8090d NIS |
2282 | #ifdef sv_dup |
2283 | if (param) { | |
a951d81d BL |
2284 | arg = sv_dup(arg, param); |
2285 | SvREFCNT_inc_simple_void_NN(arg); | |
2286 | return arg; | |
93a8090d NIS |
2287 | } |
2288 | else { | |
2289 | return newSVsv(arg); | |
2290 | } | |
2291 | #else | |
1b6737cc | 2292 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2293 | return newSVsv(arg); |
2294 | #endif | |
2295 | } | |
2296 | ||
2297 | PerlIO * | |
ecdeb87c | 2298 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2299 | { |
1b6737cc | 2300 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2301 | if (PerlIOValid(nexto)) { |
de009b76 | 2302 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2303 | if (tab && tab->Dup) |
2304 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2305 | else | |
2306 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2307 | } |
2308 | if (f) { | |
dcda55fc | 2309 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2310 | SV *arg = NULL; |
93a8090d | 2311 | char buf[8]; |
fe5a182c | 2312 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2313 | self ? self->name : "(Null)", |
2314 | (void*)f, (void*)o, (void*)param); | |
2315 | if (self && self->Getarg) | |
210e727c | 2316 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2317 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2318 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2319 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
ef8d46e8 | 2320 | SvREFCNT_dec(arg); |
93a8090d NIS |
2321 | } |
2322 | return f; | |
2323 | } | |
2324 | ||
27da23d5 | 2325 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2326 | |
8b84d7dd | 2327 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2328 | static void |
2329 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2330 | dVAR; |
22c96fc1 | 2331 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2332 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2333 | int *new_array; |
2334 | ||
2335 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2336 | old_max, new_fd, new_max); | |
2337 | ||
2338 | if (new_fd < old_max) { | |
2339 | return; | |
2340 | } | |
2341 | ||
f4ae5be6 NC |
2342 | assert (new_max > new_fd); |
2343 | ||
eae082a0 JH |
2344 | /* Use plain realloc() since we need this memory to be really |
2345 | * global and visible to all the interpreters and/or threads. */ | |
2346 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2347 | |
2348 | if (!new_array) { | |
8b84d7dd | 2349 | #ifdef USE_ITHREADS |
6cb8cb21 | 2350 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2351 | #endif |
2352 | /* Can't use PerlIO to write as it allocates memory */ | |
2353 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2354 | PL_no_mem, strlen(PL_no_mem)); | |
2355 | my_exit(1); | |
2356 | } | |
2357 | ||
2358 | PL_perlio_fd_refcnt_size = new_max; | |
2359 | PL_perlio_fd_refcnt = new_array; | |
2360 | ||
95b63a38 JH |
2361 | PerlIO_debug("Zeroing %p, %d\n", |
2362 | (void*)(new_array + old_max), | |
2363 | new_max - old_max); | |
22c96fc1 NC |
2364 | |
2365 | Zero(new_array + old_max, new_max - old_max, int); | |
2366 | } | |
2367 | ||
2368 | ||
93a8090d NIS |
2369 | void |
2370 | PerlIO_init(pTHX) | |
2371 | { | |
8b84d7dd | 2372 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2373 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2374 | } |
2375 | ||
168d5872 NIS |
2376 | void |
2377 | PerlIOUnix_refcnt_inc(int fd) | |
2378 | { | |
27da23d5 | 2379 | dTHX; |
22c96fc1 | 2380 | if (fd >= 0) { |
97aff369 | 2381 | dVAR; |
22c96fc1 | 2382 | |
8b84d7dd | 2383 | #ifdef USE_ITHREADS |
6cb8cb21 | 2384 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2385 | #endif |
22c96fc1 NC |
2386 | if (fd >= PL_perlio_fd_refcnt_size) |
2387 | S_more_refcounted_fds(aTHX_ fd); | |
2388 | ||
27da23d5 | 2389 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2390 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2391 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2392 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2393 | fd, PL_perlio_fd_refcnt[fd]); | |
2394 | } | |
2395 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2396 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2397 | |
8b84d7dd | 2398 | #ifdef USE_ITHREADS |
6cb8cb21 | 2399 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2400 | #endif |
8b84d7dd | 2401 | } else { |
12605ff9 | 2402 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2403 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2404 | } |
2405 | } | |
2406 | ||
168d5872 NIS |
2407 | int |
2408 | PerlIOUnix_refcnt_dec(int fd) | |
2409 | { | |
27da23d5 | 2410 | dTHX; |
168d5872 | 2411 | int cnt = 0; |
22c96fc1 | 2412 | if (fd >= 0) { |
97aff369 | 2413 | dVAR; |
8b84d7dd | 2414 | #ifdef USE_ITHREADS |
6cb8cb21 | 2415 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2416 | #endif |
8b84d7dd | 2417 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2418 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
8b84d7dd RGS |
2419 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", |
2420 | fd, PL_perlio_fd_refcnt_size); | |
2421 | } | |
2422 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2423 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
8b84d7dd RGS |
2424 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", |
2425 | fd, PL_perlio_fd_refcnt[fd]); | |
2426 | } | |
27da23d5 | 2427 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2428 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2429 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2430 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2431 | #endif |
8b84d7dd | 2432 | } else { |
12605ff9 | 2433 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
8b84d7dd | 2434 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2435 | } |
2436 | return cnt; | |
2437 | } | |
2438 | ||
2e0cfa16 FC |
2439 | int |
2440 | PerlIOUnix_refcnt(int fd) | |
2441 | { | |
2442 | dTHX; | |
2443 | int cnt = 0; | |
2444 | if (fd >= 0) { | |
2445 | dVAR; | |
2446 | #ifdef USE_ITHREADS | |
2447 | MUTEX_LOCK(&PL_perlio_mutex); | |
2448 | #endif | |
2449 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2450 | /* diag_listed_as: refcnt: fd %d%s */ | |
2451 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2452 | fd, PL_perlio_fd_refcnt_size); | |
2453 | } | |
2454 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2455 | /* diag_listed_as: refcnt: fd %d%s */ | |
2456 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2457 | fd, PL_perlio_fd_refcnt[fd]); | |
2458 | } | |
2459 | cnt = PL_perlio_fd_refcnt[fd]; | |
2460 | #ifdef USE_ITHREADS | |
2461 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2462 | #endif | |
2463 | } else { | |
2464 | /* diag_listed_as: refcnt: fd %d%s */ | |
2465 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2466 | } | |
2467 | return cnt; | |
2468 | } | |
2469 | ||
694c95cf JH |
2470 | void |
2471 | PerlIO_cleanup(pTHX) | |
2472 | { | |
97aff369 | 2473 | dVAR; |
694c95cf JH |
2474 | int i; |
2475 | #ifdef USE_ITHREADS | |
a25429c6 | 2476 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2477 | #else |
2478 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2479 | #endif |
e47547a8 | 2480 | |
694c95cf JH |
2481 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2482 | for (i=0; i < 3; i++) | |
2483 | PerlIOUnix_refcnt_inc(i); | |
2484 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2485 | /* Restore STDIN..STDERR refcount */ | |
2486 | for (i=0; i < 3; i++) | |
2487 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2488 | |
2489 | if (PL_known_layers) { | |
2490 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2491 | PL_known_layers = NULL; | |
2492 | } | |
27da23d5 | 2493 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2494 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2495 | PL_def_layerlist = NULL; | |
2496 | } | |
6cb8cb21 RGS |
2497 | } |
2498 | ||
0934c9d9 | 2499 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2500 | { |
53d44271 | 2501 | dVAR; |
4f3da17a DM |
2502 | #if 0 |
2503 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2504 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2505 | being present (at least in win32) :-(. | |
2506 | Disable for now. | |
2507 | */ | |
6cb8cb21 RGS |
2508 | #ifdef DEBUGGING |
2509 | { | |
2510 | /* By now all filehandles should have been closed, so any | |
2511 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2512 | * errors. */ | |
77db880c JH |
2513 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2514 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2515 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2516 | int i; |
2517 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2518 | if (PL_perlio_fd_refcnt[i]) { |
2519 | const STRLEN len = | |
2520 | my_snprintf(buf, sizeof(buf), | |
2521 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2522 | i, PL_perlio_fd_refcnt[i]); | |
2523 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2524 | } | |
6cb8cb21 RGS |
2525 | } |
2526 | } | |
2527 | #endif | |
4f3da17a | 2528 | #endif |
eae082a0 JH |
2529 | /* Not bothering with PL_perlio_mutex since by now |
2530 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2531 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2532 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2533 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2534 | PL_perlio_fd_refcnt = NULL; |
2535 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2536 | } |
694c95cf JH |
2537 | } |
2538 | ||
9e353e3b | 2539 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2540 | /* |
71200d45 | 2541 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2542 | */ |
9e353e3b | 2543 | |
14a5cf38 | 2544 | typedef struct { |
22569500 NIS |
2545 | struct _PerlIO base; /* The generic part */ |
2546 | int fd; /* UNIX like file descriptor */ | |
2547 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2548 | } PerlIOUnix; |
2549 | ||
abf9167d DM |
2550 | static void |
2551 | S_lockcnt_dec(pTHX_ const void* f) | |
2552 | { | |
2553 | PerlIO_lockcnt((PerlIO*)f)--; | |
2554 | } | |
2555 | ||
2556 | ||
2557 | /* call the signal handler, and if that handler happens to clear | |
2558 | * this handle, free what we can and return true */ | |
2559 | ||
2560 | static bool | |
2561 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2562 | ENTER; | |
2563 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2564 | PerlIO_lockcnt(f)++; | |
2565 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2566 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2567 | LEAVE; | |
abf9167d | 2568 | return 0; |
be48bbe8 | 2569 | } |
abf9167d DM |
2570 | /* we've just run some perl-level code that could have done |
2571 | * anything, including closing the file or clearing this layer. | |
2572 | * If so, free any lower layers that have already been | |
2573 | * cleared, then return an error. */ | |
2574 | while (PerlIOValid(f) && | |
2575 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2576 | { | |
2577 | const PerlIOl *l = *f; | |
2578 | *f = l->next; | |
2579 | Safefree(l); | |
2580 | } | |
be48bbe8 | 2581 | LEAVE; |
abf9167d DM |
2582 | return 1; |
2583 | } | |
2584 | ||
6f9d8c32 | 2585 | int |
9e353e3b | 2586 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2587 | { |
14a5cf38 | 2588 | int oflags = -1; |
3b6c1aba | 2589 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2590 | mode++; |
2591 | switch (*mode) { | |
2592 | case 'r': | |
2593 | oflags = O_RDONLY; | |
2594 | if (*++mode == '+') { | |
2595 | oflags = O_RDWR; | |
2596 | mode++; | |
2597 | } | |
2598 | break; | |
2599 | ||
2600 | case 'w': | |
2601 | oflags = O_CREAT | O_TRUNC; | |
2602 | if (*++mode == '+') { | |
2603 | oflags |= O_RDWR; | |
2604 | mode++; | |
2605 | } | |
2606 | else | |
2607 | oflags |= O_WRONLY; | |
2608 | break; | |
2609 | ||
2610 | case 'a': | |
2611 | oflags = O_CREAT | O_APPEND; | |
2612 | if (*++mode == '+') { | |
2613 | oflags |= O_RDWR; | |
2614 | mode++; | |
2615 | } | |
2616 | else | |
2617 | oflags |= O_WRONLY; | |
2618 | break; | |
2619 | } | |
2620 | if (*mode == 'b') { | |
2621 | oflags |= O_BINARY; | |
2622 | oflags &= ~O_TEXT; | |
2623 | mode++; | |
2624 | } | |
2625 | else if (*mode == 't') { | |
2626 | oflags |= O_TEXT; | |
2627 | oflags &= ~O_BINARY; | |
2628 | mode++; | |
2629 | } | |
2630 | /* | |
71200d45 | 2631 | * Always open in binary mode |
14a5cf38 JH |
2632 | */ |
2633 | oflags |= O_BINARY; | |
2634 | if (*mode || oflags == -1) { | |
93189314 | 2635 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2636 | oflags = -1; |
2637 | } | |
2638 | return oflags; | |
9e353e3b NIS |
2639 | } |
2640 | ||
2641 | IV | |
f62ce20a | 2642 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2643 | { |
96a5add6 | 2644 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2645 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2646 | } |
2647 | ||
aa063c35 NIS |
2648 | static void |
2649 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2650 | { |
de009b76 | 2651 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2652 | #if defined(WIN32) |
aa063c35 NIS |
2653 | Stat_t st; |
2654 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2655 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2656 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2657 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2658 | } | |
aa063c35 NIS |
2659 | else { |
2660 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2661 | } | |
6caa5a9c NIS |
2662 | } |
2663 | #endif | |
aa063c35 NIS |
2664 | s->fd = fd; |
2665 | s->oflags = imode; | |
2666 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2667 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2668 | } |
2669 | ||
2670 | IV | |
2671 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2672 | { | |
2673 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2674 | if (*PerlIONext(f)) { |
4b069b44 | 2675 | /* We never call down so do any pending stuff now */ |
03c0554d | 2676 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2677 | /* |
71200d45 | 2678 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2679 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2680 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2681 | */ |
acbd16bf | 2682 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2683 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2684 | } |
2685 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2686 | |
14a5cf38 | 2687 | return code; |
4b803d04 NIS |
2688 | } |
2689 | ||
c2fcde81 JH |
2690 | IV |
2691 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2692 | { | |
de009b76 | 2693 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2694 | Off_t new_loc; |
96a5add6 | 2695 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2696 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2697 | #ifdef ESPIPE | |
2698 | SETERRNO(ESPIPE, LIB_INVARG); | |
2699 | #else | |
2700 | SETERRNO(EINVAL, LIB_INVARG); | |
2701 | #endif | |
2702 | return -1; | |
2703 | } | |
0723351e NC |
2704 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2705 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2706 | return -1; |
c2fcde81 JH |
2707 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2708 | return 0; | |
2709 | } | |
2710 | ||
9e353e3b | 2711 | PerlIO * |
14a5cf38 JH |
2712 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2713 | IV n, const char *mode, int fd, int imode, | |
2714 | int perm, PerlIO *f, int narg, SV **args) | |
2715 | { | |
d9dac8cd | 2716 | if (PerlIOValid(f)) { |
cc6623a8 | 2717 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2718 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2719 | } |
2720 | if (narg > 0) { | |
3b6c1aba | 2721 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2722 | mode++; |
2723 | else { | |
2724 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2725 | #ifdef VMS |
2726 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2727 | #else | |
14a5cf38 | 2728 | perm = 0666; |
5e2ce0f3 | 2729 | #endif |
14a5cf38 JH |
2730 | } |
2731 | if (imode != -1) { | |
e62f0680 | 2732 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2733 | fd = PerlLIO_open3(path, imode, perm); |
2734 | } | |
2735 | } | |
2736 | if (fd >= 0) { | |
3b6c1aba | 2737 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2738 | mode++; |
2739 | if (!f) { | |
2740 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2741 | } |
2742 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2743 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2744 | return NULL; | |
2745 | } | |
d9dac8cd | 2746 | } |
aa063c35 | 2747 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2748 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2749 | if (*mode == IoTYPE_APPEND) |
2750 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2751 | return f; |
2752 | } | |
2753 | else { | |
2754 | if (f) { | |
6f207bd3 | 2755 | NOOP; |
14a5cf38 | 2756 | /* |
71200d45 | 2757 | * FIXME: pop layers ??? |
14a5cf38 JH |
2758 | */ |
2759 | } | |
2760 | return NULL; | |
2761 | } | |
9e353e3b NIS |
2762 | } |
2763 | ||
71200d45 | 2764 | PerlIO * |
ecdeb87c | 2765 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2766 | { |
dcda55fc | 2767 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2768 | int fd = os->fd; |
ecdeb87c NIS |
2769 | if (flags & PERLIO_DUP_FD) { |
2770 | fd = PerlLIO_dup(fd); | |
2771 | } | |
22c96fc1 | 2772 | if (fd >= 0) { |
ecdeb87c | 2773 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2774 | if (f) { |
2775 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2776 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2777 | return f; |
2778 | } | |
71200d45 NIS |
2779 | } |
2780 | return NULL; | |
2781 | } | |
2782 | ||
2783 | ||
9e353e3b | 2784 | SSize_t |
f62ce20a | 2785 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2786 | { |
97aff369 | 2787 | dVAR; |
abf9167d DM |
2788 | int fd; |
2789 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2790 | return -1; | |
2791 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2792 | #ifdef PERLIO_STD_SPECIAL |
2793 | if (fd == 0) | |
2794 | return PERLIO_STD_IN(fd, vbuf, count); | |
2795 | #endif | |
81428673 | 2796 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2797 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2798 | return 0; |
1fd8f4ce | 2799 | } |
14a5cf38 | 2800 | while (1) { |
b464bac0 | 2801 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2802 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2803 | if (len < 0) { |
2804 | if (errno != EAGAIN) { | |
2805 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2806 | } | |
2807 | } | |
2808 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2809 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2810 | SETERRNO(0,0); |
2811 | } | |
14a5cf38 JH |
2812 | return len; |
2813 | } | |
abf9167d DM |
2814 | /* EINTR */ |
2815 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2816 | return -1; | |
14a5cf38 | 2817 | } |
b464bac0 | 2818 | /*NOTREACHED*/ |
9e353e3b NIS |
2819 | } |
2820 | ||
2821 | SSize_t | |
f62ce20a | 2822 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2823 | { |
97aff369 | 2824 | dVAR; |
abf9167d DM |
2825 | int fd; |
2826 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2827 | return -1; | |
2828 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2829 | #ifdef PERLIO_STD_SPECIAL |
2830 | if (fd == 1 || fd == 2) | |
2831 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2832 | #endif | |
14a5cf38 | 2833 | while (1) { |
de009b76 | 2834 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2835 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2836 | if (len < 0) { |
2837 | if (errno != EAGAIN) { | |
2838 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2839 | } | |
2840 | } | |
14a5cf38 JH |
2841 | return len; |
2842 | } | |
abf9167d DM |
2843 | /* EINTR */ |
2844 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2845 | return -1; | |
06da4f11 | 2846 | } |
1b6737cc | 2847 | /*NOTREACHED*/ |
9e353e3b NIS |
2848 | } |
2849 | ||
9e353e3b | 2850 | Off_t |
f62ce20a | 2851 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2852 | { |
96a5add6 AL |
2853 | PERL_UNUSED_CONTEXT; |
2854 | ||
14a5cf38 | 2855 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2856 | } |
2857 | ||
2556f95e GF |
2858 | |
2859 | IV | |
2376d97d | 2860 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2861 | { |
97aff369 | 2862 | dVAR; |
de009b76 | 2863 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2864 | int code = 0; |
168d5872 NIS |
2865 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2866 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2867 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2868 | return 0; | |
22569500 | 2869 | } |
93a8090d NIS |
2870 | } |
2871 | else { | |
93189314 | 2872 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2873 | return -1; |
2874 | } | |
14a5cf38 JH |
2875 | while (PerlLIO_close(fd) != 0) { |
2876 | if (errno != EINTR) { | |
2877 | code = -1; | |
2878 | break; | |
2879 | } | |
abf9167d DM |
2880 | /* EINTR */ |
2881 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2882 | return -1; | |
14a5cf38 JH |
2883 | } |
2884 | if (code == 0) { | |
2885 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2886 | } | |
2887 | return code; | |
9e353e3b NIS |
2888 | } |
2889 | ||
27da23d5 | 2890 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2891 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2892 | "unix", |
2893 | sizeof(PerlIOUnix), | |
2894 | PERLIO_K_RAW, | |
2895 | PerlIOUnix_pushed, | |
2376d97d | 2896 | PerlIOBase_popped, |
14a5cf38 | 2897 | PerlIOUnix_open, |
86e05cf2 | 2898 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2899 | NULL, |
2900 | PerlIOUnix_fileno, | |
71200d45 | 2901 | PerlIOUnix_dup, |
14a5cf38 JH |
2902 | PerlIOUnix_read, |
2903 | PerlIOBase_unread, | |
2904 | PerlIOUnix_write, | |
2905 | PerlIOUnix_seek, | |
2906 | PerlIOUnix_tell, | |
2907 | PerlIOUnix_close, | |
22569500 NIS |
2908 | PerlIOBase_noop_ok, /* flush */ |
2909 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2910 | PerlIOBase_eof, |
2911 | PerlIOBase_error, | |
2912 | PerlIOBase_clearerr, | |
2913 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2914 | NULL, /* get_base */ |
2915 | NULL, /* get_bufsiz */ | |
2916 | NULL, /* get_ptr */ | |
2917 | NULL, /* get_cnt */ | |
2918 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2919 | }; |
2920 | ||
2921 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2922 | /* |
71200d45 | 2923 | * stdio as a layer |
14a5cf38 | 2924 | */ |
9e353e3b | 2925 | |
313e59c8 NIS |
2926 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2927 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2928 | broken by the last second glibc 2.3 fix | |
2929 | */ | |
2930 | #define STDIO_BUFFER_WRITABLE | |
2931 | #endif | |
2932 | ||
2933 | ||
14a5cf38 JH |
2934 | typedef struct { |
2935 | struct _PerlIO base; | |
22569500 | 2936 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2937 | } PerlIOStdio; |
2938 | ||
2939 | IV | |
f62ce20a | 2940 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2941 | { |
96a5add6 AL |
2942 | PERL_UNUSED_CONTEXT; |
2943 | ||
c4420975 AL |
2944 | if (PerlIOValid(f)) { |
2945 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2946 | if (s) | |
2947 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2948 | } |
2949 | errno = EBADF; | |
2950 | return -1; | |
9e353e3b NIS |
2951 | } |
2952 | ||
766a733e | 2953 | char * |
14a5cf38 JH |
2954 | PerlIOStdio_mode(const char *mode, char *tmode) |
2955 | { | |
de009b76 | 2956 | char * const ret = tmode; |
a0625d38 SR |
2957 | if (mode) { |
2958 | while (*mode) { | |
2959 | *tmode++ = *mode++; | |
2960 | } | |
14a5cf38 | 2961 | } |
95005ad8 | 2962 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2963 | *tmode++ = 'b'; |
2964 | #endif | |
14a5cf38 JH |
2965 | *tmode = '\0'; |
2966 | return ret; | |
2967 | } | |
2968 | ||
4b803d04 | 2969 | IV |
2dc2558e | 2970 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2971 | { |
1fd8f4ce NIS |
2972 | PerlIO *n; |
2973 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2974 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2975 | if (toptab == tab) { |
2976 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2977 | PerlIO_pop(aTHX_ f); | |
2978 | return 0; | |
2979 | } else { | |
de009b76 | 2980 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2981 | char tmode[8]; |
2982 | FILE *stdio; | |
81428673 | 2983 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2984 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2985 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2986 | /* We never call down so do any pending stuff now */ | |
2987 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2988 | } |
1fd8f4ce NIS |
2989 | else { |
2990 | return -1; | |
2991 | } | |
2992 | } | |
14a5cf38 | 2993 | } |
2dc2558e | 2994 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2995 | } |
2996 | ||
22569500 | 2997 | |
9e353e3b | 2998 | PerlIO * |
4b069b44 | 2999 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 3000 | { |
14a5cf38 JH |
3001 | dTHX; |
3002 | PerlIO *f = NULL; | |
3003 | if (stdio) { | |
22569500 | 3004 | PerlIOStdio *s; |
4b069b44 NIS |
3005 | if (!mode || !*mode) { |
3006 | /* We need to probe to see how we can open the stream | |
3007 | so start with read/write and then try write and read | |
3008 | we dup() so that we can fclose without loosing the fd. | |
3009 | ||
3010 | Note that the errno value set by a failing fdopen | |
3011 | varies between stdio implementations. | |
3012 | */ | |
de009b76 | 3013 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 3014 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 3015 | if (!f2) { |
a33cf58c | 3016 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
3017 | } |
3018 | if (!f2) { | |
a33cf58c | 3019 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
3020 | } |
3021 | if (!f2) { | |
3022 | /* Don't seem to be able to open */ | |
3023 | PerlLIO_close(fd); | |
3024 | return f; | |
3025 | } | |
3026 | fclose(f2); | |
22569500 | 3027 | } |
a0714e2c | 3028 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
3029 | s = PerlIOSelf(f, PerlIOStdio); |
3030 | s->stdio = stdio; | |
c586124f | 3031 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 3032 | } |
14a5cf38 JH |
3033 | } |
3034 | return f; | |
9e353e3b NIS |
3035 | } |
3036 | ||
3037 | PerlIO * | |
14a5cf38 JH |
3038 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3039 | IV n, const char *mode, int fd, int imode, | |
3040 | int perm, PerlIO *f, int narg, SV **args) | |
3041 | { | |
3042 | char tmode[8]; | |
d9dac8cd | 3043 | if (PerlIOValid(f)) { |
dcda55fc AL |
3044 | const char * const path = SvPV_nolen_const(*args); |
3045 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
3046 | FILE *stdio; |
3047 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
3048 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
3049 | s->stdio); |
3050 | if (!s->stdio) | |
3051 | return NULL; | |
3052 | s->stdio = stdio; | |
1751d015 | 3053 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3054 | return f; |
3055 | } | |
3056 | else { | |
3057 | if (narg > 0) { | |
dcda55fc | 3058 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 3059 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3060 | mode++; |
3061 | fd = PerlLIO_open3(path, imode, perm); | |
3062 | } | |
3063 | else { | |
95005ad8 GH |
3064 | FILE *stdio; |
3065 | bool appended = FALSE; | |
3066 | #ifdef __CYGWIN__ | |
3067 | /* Cygwin wants its 'b' early. */ | |
3068 | appended = TRUE; | |
3069 | mode = PerlIOStdio_mode(mode, tmode); | |
3070 | #endif | |
3071 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3072 | if (stdio) { |
6f0313ac JH |
3073 | if (!f) { |
3074 | f = PerlIO_allocate(aTHX); | |
3075 | } | |
95005ad8 GH |
3076 | if (!appended) |
3077 | mode = PerlIOStdio_mode(mode, tmode); | |
3078 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3079 | if (f) { | |
0f0f9e2b JH |
3080 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3081 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3082 | } else { | |
3083 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3084 | } |
3085 | return f; | |
3086 | } | |
3087 | else { | |
3088 | return NULL; | |
3089 | } | |
14a5cf38 JH |
3090 | } |
3091 | } | |
3092 | if (fd >= 0) { | |
3093 | FILE *stdio = NULL; | |
3094 | int init = 0; | |
3b6c1aba | 3095 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3096 | init = 1; |
3097 | mode++; | |
3098 | } | |
3099 | if (init) { | |
3100 | switch (fd) { | |
3101 | case 0: | |
3102 | stdio = PerlSIO_stdin; | |
3103 | break; | |
3104 | case 1: | |
3105 | stdio = PerlSIO_stdout; | |
3106 | break; | |
3107 | case 2: | |
3108 | stdio = PerlSIO_stderr; | |
3109 | break; | |
3110 | } | |
3111 | } | |
3112 | else { | |
3113 | stdio = PerlSIO_fdopen(fd, mode = | |
3114 | PerlIOStdio_mode(mode, tmode)); | |
3115 | } | |
3116 | if (stdio) { | |
d9dac8cd NIS |
3117 | if (!f) { |
3118 | f = PerlIO_allocate(aTHX); | |
3119 | } | |
a33cf58c | 3120 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3121 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3122 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3123 | } |
14a5cf38 JH |
3124 | return f; |
3125 | } | |
3126 | } | |
3127 | } | |
ee518936 | 3128 | return NULL; |
9e353e3b NIS |
3129 | } |
3130 | ||
1751d015 | 3131 | PerlIO * |
ecdeb87c | 3132 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3133 | { |
3134 | /* This assumes no layers underneath - which is what | |
3135 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3136 | */ | |
ecdeb87c | 3137 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3138 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3139 | const int fd = fileno(stdio); |
9217ff3f | 3140 | char mode[8]; |
ecdeb87c | 3141 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3142 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3143 | if (dfd >= 0) { |
3144 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3145 | goto set_this; | |
ecdeb87c NIS |
3146 | } |
3147 | else { | |
6f207bd3 | 3148 | NOOP; |
ecdeb87c NIS |
3149 | /* FIXME: To avoid messy error recovery if dup fails |
3150 | re-use the existing stdio as though flag was not set | |
3151 | */ | |
3152 | } | |
3153 | } | |
9217ff3f NIS |
3154 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3155 | set_this: | |
694c95cf | 3156 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3157 | if(stdio) { |
3158 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3159 | } | |
1751d015 NIS |
3160 | } |
3161 | return f; | |
3162 | } | |
3163 | ||
0d7a5398 NIS |
3164 | static int |
3165 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3166 | { | |
96a5add6 AL |
3167 | PERL_UNUSED_CONTEXT; |
3168 | ||
0d7a5398 | 3169 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3170 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3171 | */ |
ef8eacb8 AT |
3172 | # if defined(__UCLIBC__) |
3173 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3174 | f->__filedes = -1; | |
3175 | return 1; | |
3176 | # elif defined(__GLIBC__) | |
0d7a5398 | 3177 | /* There may be a better way for GLIBC: |
37725cdc | 3178 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3179 | */ |
3180 | f->_fileno = -1; | |
3181 | return 1; | |
3182 | # elif defined(__sun__) | |
f5992bc4 | 3183 | PERL_UNUSED_ARG(f); |
cfedb851 | 3184 | return 0; |
0d7a5398 NIS |
3185 | # elif defined(__hpux) |
3186 | f->__fileH = 0xff; | |
3187 | f->__fileL = 0xff; | |
3188 | return 1; | |
9837d373 | 3189 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3190 | your platform does not have special entry try this one. |
9837d373 NIS |
3191 | [For OSF only have confirmation for Tru64 (alpha) |
3192 | but assume other OSFs will be similar.] | |
37725cdc | 3193 | */ |
9837d373 | 3194 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3195 | f->_file = -1; |
3196 | return 1; | |
3197 | # elif defined(__FreeBSD__) | |
3198 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3199 | - we could insert a dummy func in the _close function entry |
3200 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3201 | */ |
3202 | f->_file = -1; | |
0c49ea6a SU |
3203 | return 1; |
3204 | # elif defined(__OpenBSD__) | |
3205 | /* There may be a better way on OpenBSD: | |
3206 | - we could insert a dummy func in the _close function entry | |
3207 | f->_close = (int (*)(void *)) dummy_close; | |
3208 | */ | |
3209 | f->_file = -1; | |
0d7a5398 | 3210 | return 1; |
59ad941d IZ |
3211 | # elif defined(__EMX__) |
3212 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3213 | f->_handle = -1; | |
3214 | return 1; | |
0d7a5398 NIS |
3215 | # elif defined(__CYGWIN__) |
3216 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3217 | - we could insert a dummy func in the _close function entry |
3218 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3219 | */ |
3220 | f->_file = -1; | |
3221 | return 1; | |
3222 | # elif defined(WIN32) | |
378eeda7 | 3223 | # if defined(UNDER_CE) |
b475b3e6 JH |
3224 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3225 | structure at all | |
3226 | */ | |
0d7a5398 NIS |
3227 | # else |
3228 | f->_file = -1; | |
3229 | # endif | |
3230 | return 1; | |
3231 | # else | |
3232 | #if 0 | |
37725cdc | 3233 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3234 | (which isn't thread safe) instead |
37725cdc | 3235 | */ |
0d7a5398 NIS |
3236 | # error "Don't know how to set FILE.fileno on your platform" |
3237 | #endif | |
8772537c | 3238 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3239 | return 0; |
3240 | # endif | |
3241 | } | |
3242 | ||
1751d015 | 3243 | IV |
f62ce20a | 3244 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3245 | { |
c4420975 | 3246 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3247 | if (!stdio) { |
3248 | errno = EBADF; | |
3249 | return -1; | |
3250 | } | |
9217ff3f | 3251 | else { |
de009b76 | 3252 | const int fd = fileno(stdio); |
0d7a5398 | 3253 | int invalidate = 0; |
bbfd922f | 3254 | IV result = 0; |
1d791a44 | 3255 | int dupfd = -1; |
4ee39169 | 3256 | dSAVEDERRNO; |
a2e578da MHM |
3257 | #ifdef USE_ITHREADS |
3258 | dVAR; | |
3259 | #endif | |
0d7a5398 | 3260 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3261 | /* Socks lib overrides close() but stdio isn't linked to |
3262 | that library (though we are) - so we must call close() | |
3263 | on sockets on stdio's behalf. | |
3264 | */ | |
0d7a5398 NIS |
3265 | int optval; |
3266 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3267 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3268 | invalidate = 1; |
0d7a5398 | 3269 | #endif |
d8723f43 NC |
3270 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3271 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3272 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3273 | trying to close an already closed handle which somehow it still has | |
3274 | a reference to. (via.xs, I'm looking at you). */ | |
3275 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3276 | /* File descriptor still in use */ | |
0d7a5398 | 3277 | invalidate = 1; |
d8723f43 | 3278 | } |
0d7a5398 | 3279 | if (invalidate) { |
6b4ce6c8 AL |
3280 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3281 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3282 | return 0; | |
3283 | if (stdio == stdout || stdio == stderr) | |
3284 | return PerlIO_flush(f); | |
37725cdc NIS |
3285 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3286 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3287 | fileno slot of the FILE * | |
3288 | */ | |
bbfd922f | 3289 | result = PerlIO_flush(f); |
4ee39169 | 3290 | SAVE_ERRNO; |
6b4ce6c8 | 3291 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3292 | if (!invalidate) { |
9bab90c0 NC |
3293 | #ifdef USE_ITHREADS |
3294 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3295 | /* Right. We need a mutex here because for a brief while we |
3296 | will have the situation that fd is actually closed. Hence if | |
3297 | a second thread were to get into this block, its dup() would | |
3298 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3299 | Then if we get to the dup2() first, we blat the fd back |
3300 | (messing up its temporary as a side effect) only for it to | |
3301 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3302 | ||
3303 | /* There is, of course, a race condition, that any other thread | |
3304 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3305 | for the duration of this little manoeuvrer. Perhaps we |
3306 | should hold an IO mutex for the duration of every IO | |
3307 | operation if we know that invalidate doesn't work on this | |
3308 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3309 | |
3310 | Except that correctness trumps speed. | |
3311 | Advice from klortho #11912. */ | |
3312 | #endif | |
6b4ce6c8 | 3313 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3314 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3315 | if (dupfd < 0) { |
3316 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3317 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3318 | recover from here, or if closing this particular FILE * | |
3319 | is a good idea now. */ | |
3320 | } | |
3321 | #endif | |
3322 | } | |
94ccb807 JH |
3323 | } else { |
3324 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3325 | } |
0d7a5398 | 3326 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3327 | /* We treat error from stdio as success if we invalidated |
3328 | errno may NOT be expected EBADF | |
e8529473 NIS |
3329 | */ |
3330 | if (invalidate && result != 0) { | |
4ee39169 | 3331 | RESTORE_ERRNO; |
0d7a5398 | 3332 | result = 0; |
37725cdc | 3333 | } |
6b4ce6c8 AL |
3334 | #ifdef SOCKS5_VERSION_NAME |
3335 | /* in SOCKS' case, let close() determine return value */ | |
3336 | result = close(fd); | |
3337 | #endif | |
1d791a44 | 3338 | if (dupfd >= 0) { |
0d7a5398 | 3339 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3340 | PerlLIO_close(dupfd); |
711e8db2 | 3341 | #ifdef USE_ITHREADS |
9bab90c0 | 3342 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3343 | #endif |
9217ff3f NIS |
3344 | } |
3345 | return result; | |
37725cdc | 3346 | } |
1751d015 NIS |
3347 | } |
3348 | ||
9e353e3b | 3349 | SSize_t |
f62ce20a | 3350 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3351 | { |
97aff369 | 3352 | dVAR; |
abf9167d | 3353 | FILE * s; |
14a5cf38 | 3354 | SSize_t got = 0; |
abf9167d DM |
3355 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3356 | return -1; | |
3357 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3358 | for (;;) { |
3359 | if (count == 1) { | |
3360 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3361 | /* | |
3362 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3363 | * stdio does not do that for fread() | |
3364 | */ | |
de009b76 | 3365 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3366 | if (ch != EOF) { |
3367 | *buf = ch; | |
3368 | got = 1; | |
3369 | } | |
14a5cf38 | 3370 | } |
4d948241 NIS |
3371 | else |
3372 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3373 | if (got == 0 && PerlSIO_ferror(s)) |
3374 | got = -1; | |
42a7a32f | 3375 | if (got >= 0 || errno != EINTR) |
4d948241 | 3376 | break; |
abf9167d DM |
3377 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3378 | return -1; | |
42a7a32f | 3379 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3380 | } |
14a5cf38 | 3381 | return got; |
9e353e3b NIS |
3382 | } |
3383 | ||
3384 | SSize_t | |
f62ce20a | 3385 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3386 | { |
14a5cf38 | 3387 | SSize_t unread = 0; |
c4420975 | 3388 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3389 | |
313e59c8 | 3390 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3391 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3392 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3393 | STDCHAR *base = PerlIO_get_base(f); | |
3394 | SSize_t cnt = PerlIO_get_cnt(f); | |
3395 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3396 | SSize_t avail = ptr - base; | |
3397 | if (avail > 0) { | |
3398 | if (avail > count) { | |
3399 | avail = count; | |
3400 | } | |
3401 | ptr -= avail; | |
3402 | Move(buf-avail,ptr,avail,STDCHAR); | |
3403 | count -= avail; | |
3404 | unread += avail; | |
3405 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3406 | if (PerlSIO_feof(s) && unread >= 0) |
3407 | PerlSIO_clearerr(s); | |
3408 | } | |
3409 | } | |
313e59c8 NIS |
3410 | else |
3411 | #endif | |
3412 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3413 | /* We can get pointer to buffer but not its base |
3414 | Do ungetc() but check chars are ending up in the | |
3415 | buffer | |
3416 | */ | |
3417 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3418 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3419 | while (count > 0) { | |
de009b76 | 3420 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3421 | if (ungetc(ch,s) != ch) { |
3422 | /* ungetc did not work */ | |
3423 | break; | |
3424 | } | |
3425 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3426 | /* Did not change pointer as expected */ | |
3427 | fgetc(s); /* get char back again */ | |
3428 | break; | |
3429 | } | |
3430 | /* It worked ! */ | |
3431 | count--; | |
3432 | unread++; | |
93679785 NIS |
3433 | } |
3434 | } | |
3435 | ||
3436 | if (count > 0) { | |
3437 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3438 | } |
3439 | return unread; | |
9e353e3b NIS |
3440 | } |
3441 | ||
3442 | SSize_t | |
f62ce20a | 3443 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3444 | { |
97aff369 | 3445 | dVAR; |
4d948241 | 3446 | SSize_t got; |
abf9167d DM |
3447 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3448 | return -1; | |
4d948241 NIS |
3449 | for (;;) { |
3450 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3451 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3452 | if (got >= 0 || errno != EINTR) |
4d948241 | 3453 | break; |
abf9167d DM |
3454 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3455 | return -1; | |
42a7a32f | 3456 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3457 | } |
3458 | return got; | |
9e353e3b NIS |
3459 | } |
3460 | ||
94a175e1 | 3461 | IV |
f62ce20a | 3462 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3463 | { |
c4420975 | 3464 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3465 | PERL_UNUSED_CONTEXT; |
3466 | ||
94a175e1 | 3467 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3468 | } |
3469 | ||
3470 | Off_t | |
f62ce20a | 3471 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3472 | { |
c4420975 | 3473 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3474 | PERL_UNUSED_CONTEXT; |
3475 | ||
94a175e1 | 3476 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3477 | } |
3478 | ||
3479 | IV | |
f62ce20a | 3480 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3481 | { |
c4420975 | 3482 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3483 | PERL_UNUSED_CONTEXT; |
3484 | ||
14a5cf38 JH |
3485 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3486 | return PerlSIO_fflush(stdio); | |
3487 | } | |
3488 | else { | |
6f207bd3 | 3489 | NOOP; |
88b61e10 | 3490 | #if 0 |
14a5cf38 JH |
3491 | /* |
3492 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3493 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3494 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3495 | * layer read-to-read |
14a5cf38 JH |
3496 | */ |
3497 | /* | |
71200d45 | 3498 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3499 | */ |
4ee39169 | 3500 | dSAVE_ERRNO; |
14a5cf38 | 3501 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3502 | RESTORE_ERRNO; |
88b61e10 | 3503 | #endif |
14a5cf38 JH |
3504 | } |
3505 | return 0; | |
9e353e3b NIS |
3506 | } |
3507 | ||
3508 | IV | |
f62ce20a | 3509 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3510 | { |
96a5add6 AL |
3511 | PERL_UNUSED_CONTEXT; |
3512 | ||
14a5cf38 | 3513 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3514 | } |
3515 | ||
3516 | IV | |
f62ce20a | 3517 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3518 | { |
96a5add6 AL |
3519 | PERL_UNUSED_CONTEXT; |
3520 | ||
263df5f1 | 3521 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3522 | } |
3523 | ||
3524 | void | |
f62ce20a | 3525 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3526 | { |
96a5add6 AL |
3527 | PERL_UNUSED_CONTEXT; |
3528 | ||
14a5cf38 | 3529 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3530 | } |
3531 | ||
3532 | void | |
f62ce20a | 3533 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3534 | { |
96a5add6 AL |
3535 | PERL_UNUSED_CONTEXT; |
3536 | ||
9e353e3b | 3537 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3538 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3539 | #else |
bd61b366 | 3540 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3541 | #endif |
3542 | } | |
3543 | ||
3544 | #ifdef FILE_base | |
3545 | STDCHAR * | |
f62ce20a | 3546 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3547 | { |
c4420975 | 3548 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3549 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3550 | } |
3551 | ||
3552 | Size_t | |
f62ce20a | 3553 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3554 | { |
c4420975 | 3555 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3556 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3557 | } |
3558 | #endif | |
3559 | ||
3560 | #ifdef USE_STDIO_PTR | |
3561 | STDCHAR * | |
f62ce20a | 3562 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3563 | { |
c4420975 | 3564 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3565 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3566 | } |
3567 | ||
3568 | SSize_t | |
f62ce20a | 3569 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3570 | { |
c4420975 | 3571 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3572 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3573 | } |
3574 | ||
3575 | void | |
f62ce20a | 3576 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3577 | { |
c4420975 | 3578 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3579 | if (ptr != NULL) { |
9e353e3b | 3580 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3581 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3582 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3583 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3584 | #endif |
3585 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3586 | /* |
71200d45 | 3587 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3588 | */ |
3589 | return; | |
9e353e3b | 3590 | #endif |
22569500 | 3591 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3592 | PerlProc_abort(); |
22569500 | 3593 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3594 | } |
3595 | /* | |
71200d45 | 3596 | * Now (or only) set cnt |
14a5cf38 | 3597 | */ |
9e353e3b | 3598 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3599 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3600 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3601 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3602 | PerlSIO_set_ptr(stdio, |
3603 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3604 | cnt)); | |
22569500 | 3605 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3606 | PerlProc_abort(); |
22569500 NIS |
3607 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3608 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3609 | } |
3610 | ||
93679785 | 3611 | |
9e353e3b NIS |
3612 | #endif |
3613 | ||
93679785 NIS |
3614 | IV |
3615 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3616 | { | |
abf9167d | 3617 | FILE * stdio; |
93679785 | 3618 | int c; |
96a5add6 | 3619 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3620 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3621 | return -1; | |
3622 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3623 | |
93679785 NIS |
3624 | /* |
3625 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3626 | */ | |
3627 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3628 | if (PerlSIO_fflush(stdio) != 0) | |
3629 | return EOF; | |
3630 | } | |
f3be3723 BL |
3631 | for (;;) { |
3632 | c = PerlSIO_fgetc(stdio); | |
3633 | if (c != EOF) | |
3634 | break; | |
3635 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3636 | return EOF; | |
abf9167d DM |
3637 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3638 | return -1; | |
f3be3723 BL |
3639 | SETERRNO(0,0); |
3640 | } | |
93679785 NIS |
3641 | |
3642 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3643 | |
3644 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3645 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3646 | /* Fake ungetc() to the real buffer in case system's ungetc |
3647 | goes elsewhere | |
3648 | */ | |
3649 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3650 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3651 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3652 | if (ptr == base+1) { | |
3653 | *--ptr = (STDCHAR) c; | |
3654 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3655 | if (PerlSIO_feof(stdio)) | |
3656 | PerlSIO_clearerr(stdio); | |
3657 | return 0; | |
3658 | } | |
3659 | } | |
313e59c8 NIS |
3660 | else |
3661 | #endif | |
3662 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3663 | STDCHAR ch = c; |
3664 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3665 | return 0; | |
3666 | } | |
3667 | } | |
93679785 NIS |
3668 | #endif |
3669 | ||
3670 | #if defined(VMS) | |
3671 | /* An ungetc()d char is handled separately from the regular | |
3672 | * buffer, so we stuff it in the buffer ourselves. | |
3673 | * Should never get called as should hit code above | |
3674 | */ | |
bad9695d NIS |
3675 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3676 | (*stdio)->_cnt++; | |
93679785 NIS |
3677 | #else |
3678 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3679 | using ungetc(). |
93679785 NIS |
3680 | */ |
3681 | if (PerlSIO_ungetc(c, stdio) != c) | |
3682 | return EOF; | |
3683 | #endif | |
3684 | return 0; | |
3685 | } | |
3686 | ||
3687 | ||
3688 | ||
27da23d5 | 3689 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3690 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3691 | "stdio", |
3692 | sizeof(PerlIOStdio), | |
86e05cf2 | 3693 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3694 | PerlIOStdio_pushed, |
2376d97d | 3695 | PerlIOBase_popped, |
14a5cf38 | 3696 | PerlIOStdio_open, |
86e05cf2 | 3697 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3698 | NULL, |
3699 | PerlIOStdio_fileno, | |
71200d45 | 3700 | PerlIOStdio_dup, |
14a5cf38 JH |
3701 | PerlIOStdio_read, |
3702 | PerlIOStdio_unread, | |
3703 | PerlIOStdio_write, | |
3704 | PerlIOStdio_seek, | |
3705 | PerlIOStdio_tell, | |
3706 | PerlIOStdio_close, | |
3707 | PerlIOStdio_flush, | |
3708 | PerlIOStdio_fill, | |
3709 | PerlIOStdio_eof, | |
3710 | PerlIOStdio_error, | |
3711 | PerlIOStdio_clearerr, | |
3712 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3713 | #ifdef FILE_base |
14a5cf38 JH |
3714 | PerlIOStdio_get_base, |
3715 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3716 | #else |
14a5cf38 JH |
3717 | NULL, |
3718 | NULL, | |
9e353e3b NIS |
3719 | #endif |
3720 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3721 | PerlIOStdio_get_ptr, |
3722 | PerlIOStdio_get_cnt, | |
15b61c98 | 3723 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3724 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3725 | # else |
3726 | NULL, | |
3727 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3728 | #else | |
3729 | NULL, | |
14a5cf38 JH |
3730 | NULL, |
3731 | NULL, | |
15b61c98 | 3732 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3733 | }; |
3734 | ||
b9d6bf13 JH |
3735 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3736 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3737 | FILE * |
81428673 | 3738 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3739 | { |
e87a358a | 3740 | dTHX; |
81428673 NIS |
3741 | FILE *stdio = NULL; |
3742 | if (PerlIOValid(f)) { | |
3743 | char buf[8]; | |
3744 | PerlIO_flush(f); | |
3745 | if (!mode || !*mode) { | |
3746 | mode = PerlIO_modestr(f, buf); | |
3747 | } | |
3748 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3749 | if (stdio) { | |
3750 | PerlIOl *l = *f; | |
9f75cc58 | 3751 | PerlIO *f2; |
81428673 NIS |
3752 | /* De-link any lower layers so new :stdio sticks */ |
3753 | *f = NULL; | |
a0714e2c | 3754 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3755 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3756 | s->stdio = stdio; |
6b54a403 | 3757 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3758 | /* Link previous lower layers under new one */ |
3759 | *PerlIONext(f) = l; | |
3760 | } | |
3761 | else { | |
3762 | /* restore layers list */ | |
3763 | *f = l; | |
3764 | } | |
a33cf58c | 3765 | } |
14a5cf38 JH |
3766 | } |
3767 | return stdio; | |
9e353e3b NIS |
3768 | } |
3769 | ||
81428673 | 3770 | |
9e353e3b NIS |
3771 | FILE * |
3772 | PerlIO_findFILE(PerlIO *f) | |
3773 | { | |
14a5cf38 | 3774 | PerlIOl *l = *f; |
bbbc33d0 | 3775 | FILE *stdio; |
14a5cf38 JH |
3776 | while (l) { |
3777 | if (l->tab == &PerlIO_stdio) { | |
3778 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3779 | return s->stdio; | |
3780 | } | |
3781 | l = *PerlIONext(&l); | |
f7e7eb72 | 3782 | } |
4b069b44 | 3783 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3784 | /* However, we're not really exporting a FILE * to someone else (who |
3785 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3786 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3787 | descriptor. We have to do this, because if the loop above returns you |
3788 | the FILE *, then *it* didn't increase any reference count. So there's | |
3789 | only one way to be consistent. */ | |
3790 | stdio = PerlIO_exportFILE(f, NULL); | |
3791 | if (stdio) { | |
3792 | const int fd = fileno(stdio); | |
3793 | if (fd >= 0) | |
3794 | PerlIOUnix_refcnt_dec(fd); | |
3795 | } | |
3796 | return stdio; | |
9e353e3b NIS |
3797 | } |
3798 | ||
b9d6bf13 | 3799 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3800 | void |
3801 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3802 | { | |
27da23d5 | 3803 | dVAR; |
22569500 NIS |
3804 | PerlIOl *l; |
3805 | while ((l = *p)) { | |
3806 | if (l->tab == &PerlIO_stdio) { | |
3807 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3808 | if (s->stdio == f) { | |
3809 | dTHX; | |
6b54a403 NC |
3810 | const int fd = fileno(f); |
3811 | if (fd >= 0) | |
3812 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3813 | PerlIO_pop(aTHX_ p); |
3814 | return; | |
3815 | } | |
3816 | } | |
3817 | p = PerlIONext(p); | |
3818 | } | |
3819 | return; | |
9e353e3b NIS |
3820 | } |
3821 | ||
3822 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3823 | /* |
71200d45 | 3824 | * perlio buffer layer |
14a5cf38 | 3825 | */ |
9e353e3b | 3826 | |
5e2ab84b | 3827 | IV |
2dc2558e | 3828 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3829 | { |
14a5cf38 | 3830 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3831 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3832 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3833 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3834 | } | |
4b069b44 | 3835 | if (*PerlIONext(f)) { |
de009b76 | 3836 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3837 | if (posn != (Off_t) - 1) { |
3838 | b->posn = posn; | |
3839 | } | |
14a5cf38 | 3840 | } |
2dc2558e | 3841 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3842 | } |
3843 | ||
9e353e3b | 3844 | PerlIO * |
14a5cf38 JH |
3845 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3846 | IV n, const char *mode, int fd, int imode, int perm, | |
3847 | PerlIO *f, int narg, SV **args) | |
3848 | { | |
04892f78 | 3849 | if (PerlIOValid(f)) { |
14a5cf38 | 3850 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3851 | PerlIO_funcs *tab = |
3852 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3853 | if (tab && tab->Open) | |
3854 | next = | |
3855 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3856 | next, narg, args); | |
2dc2558e | 3857 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3858 | return NULL; |
3859 | } | |
3860 | } | |
3861 | else { | |
04892f78 | 3862 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3863 | int init = 0; |
3b6c1aba | 3864 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3865 | init = 1; |
3866 | /* | |
71200d45 | 3867 | * mode++; |
14a5cf38 JH |
3868 | */ |
3869 | } | |
67363c0d JH |
3870 | if (tab && tab->Open) |
3871 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3872 | f, narg, args); | |
3873 | else | |
3874 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3875 | if (f) { |
22569500 | 3876 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3877 | /* |
3878 | * if push fails during open, open fails. close will pop us. | |
3879 | */ | |
3880 | PerlIO_close (f); | |
3881 | return NULL; | |
3882 | } else { | |
3883 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3884 | if (init && fd == 2) { |
3885 | /* | |
3886 | * Initial stderr is unbuffered | |
3887 | */ | |
3888 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3889 | } | |
23b84778 IZ |
3890 | #ifdef PERLIO_USING_CRLF |
3891 | # ifdef PERLIO_IS_BINMODE_FD | |
3892 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3893 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3894 | else |
3895 | # endif | |
3896 | /* | |
3897 | * do something about failing setmode()? --jhi | |
3898 | */ | |
3899 | PerlLIO_setmode(fd, O_BINARY); | |
3900 | #endif | |
8c8488cd CB |
3901 | #ifdef VMS |
3902 | #include <rms.h> | |
3903 | /* Enable line buffering with record-oriented regular files | |
3904 | * so we don't introduce an extraneous record boundary when | |
3905 | * the buffer fills up. | |
3906 | */ | |
3907 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3908 | Stat_t st; | |
3909 | if (PerlLIO_fstat(fd, &st) == 0 | |
3910 | && S_ISREG(st.st_mode) | |
3911 | && (st.st_fab_rfm == FAB$C_VAR | |
3912 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3913 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3914 | } | |
3915 | } | |
3916 | #endif | |
14a5cf38 JH |
3917 | } |
3918 | } | |
ee518936 | 3919 | } |
14a5cf38 | 3920 | return f; |
9e353e3b NIS |
3921 | } |
3922 | ||
14a5cf38 JH |
3923 | /* |
3924 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3925 | * read or write state. For write state, we put the postponed data through |
3926 | * the next layers. For read state, we seek() the next layers to the | |
3927 | * offset given by current position in the buffer, and discard the buffer | |
3928 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3929 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3930 | */ |
9e353e3b | 3931 | IV |
f62ce20a | 3932 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3933 | { |
dcda55fc | 3934 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3935 | int code = 0; |
04892f78 | 3936 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3937 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3938 | /* | |
71200d45 | 3939 | * write() the buffer |
14a5cf38 | 3940 | */ |
de009b76 AL |
3941 | const STDCHAR *buf = b->buf; |
3942 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3943 | while (p < b->ptr) { |
3944 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3945 | if (count > 0) { | |
3946 | p += count; | |
3947 | } | |
3948 | else if (count < 0 || PerlIO_error(n)) { | |
3949 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3950 | code = -1; | |
3951 | break; | |
3952 | } | |
3953 | } | |
3954 | b->posn += (p - buf); | |
3955 | } | |
3956 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3957 | STDCHAR *buf = PerlIO_get_base(f); | |
3958 | /* | |
71200d45 | 3959 | * Note position change |
14a5cf38 JH |
3960 | */ |
3961 | b->posn += (b->ptr - buf); | |
3962 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3963 | /* We did not consume all of it - try and seek downstream to |
3964 | our logical position | |
14a5cf38 | 3965 | */ |
4b069b44 | 3966 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3967 | /* Reload n as some layers may pop themselves on seek */ |
3968 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3969 | } |
ba5c3fe9 | 3970 | else { |
4b069b44 NIS |
3971 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3972 | data is lost for good - so return saying "ok" having undone | |
3973 | the position adjust | |
3974 | */ | |
3975 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3976 | return code; |
3977 | } | |
14a5cf38 JH |
3978 | } |
3979 | } | |
3980 | b->ptr = b->end = b->buf; | |
3981 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3982 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3983 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3984 | code = -1; |
3985 | return code; | |
6f9d8c32 NIS |
3986 | } |
3987 | ||
93c2c2ec IZ |
3988 | /* This discards the content of the buffer after b->ptr, and rereads |
3989 | * the buffer from the position off in the layer downstream; here off | |
3990 | * is at offset corresponding to b->ptr - b->buf. | |
3991 | */ | |
06da4f11 | 3992 | IV |
f62ce20a | 3993 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3994 | { |
dcda55fc | 3995 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3996 | PerlIO *n = PerlIONext(f); |
3997 | SSize_t avail; | |
3998 | /* | |
4b069b44 NIS |
3999 | * Down-stream flush is defined not to loose read data so is harmless. |
4000 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 4001 | */ |
93c2c2ec | 4002 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
4003 | return -1; |
4004 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 4005 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
4006 | |
4007 | if (!b->buf) | |
22569500 | 4008 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 4009 | |
0f0eef27 | 4010 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4011 | |
14a5cf38 | 4012 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4013 | |
4014 | if (!PerlIOValid(n)) { | |
4015 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4016 | return -1; | |
4017 | } | |
4018 | ||
14a5cf38 JH |
4019 | if (PerlIO_fast_gets(n)) { |
4020 | /* | |
04892f78 | 4021 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4022 | * ->Read() because that will loop till it gets what we asked for |
4023 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4024 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4025 | */ |
4026 | avail = PerlIO_get_cnt(n); | |
4027 | if (avail <= 0) { | |
4028 | avail = PerlIO_fill(n); | |
4029 | if (avail == 0) | |
4030 | avail = PerlIO_get_cnt(n); | |
4031 | else { | |
4032 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4033 | avail = 0; | |
4034 | } | |
4035 | } | |
4036 | if (avail > 0) { | |
4037 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4038 | const SSize_t cnt = avail; |
eb160463 | 4039 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4040 | avail = b->bufsiz; |
4041 | Copy(ptr, b->buf, avail, STDCHAR); | |
4042 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4043 | } | |
4044 | } | |
4045 | else { | |
4046 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4047 | } | |
4048 | if (avail <= 0) { | |
4049 | if (avail == 0) | |
4050 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4051 | else | |
4052 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
4053 | return -1; | |
4054 | } | |
4055 | b->end = b->buf + avail; | |
4056 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4057 | return 0; | |
06da4f11 NIS |
4058 | } |
4059 | ||
6f9d8c32 | 4060 | SSize_t |
f62ce20a | 4061 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4062 | { |
04892f78 | 4063 | if (PerlIOValid(f)) { |
dcda55fc | 4064 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4065 | if (!b->ptr) |
4066 | PerlIO_get_base(f); | |
f62ce20a | 4067 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4068 | } |
4069 | return 0; | |
6f9d8c32 NIS |
4070 | } |
4071 | ||
9e353e3b | 4072 | SSize_t |
f62ce20a | 4073 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4074 | { |
14a5cf38 | 4075 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4076 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4077 | SSize_t unread = 0; |
4078 | SSize_t avail; | |
4079 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4080 | PerlIO_flush(f); | |
4081 | if (!b->buf) | |
4082 | PerlIO_get_base(f); | |
4083 | if (b->buf) { | |
4084 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4085 | /* | |
4086 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4087 | * which have been read back to buffer start |
14a5cf38 JH |
4088 | */ |
4089 | avail = (b->ptr - b->buf); | |
4090 | } | |
4091 | else { | |
4092 | /* | |
4093 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4094 | * unread |
14a5cf38 JH |
4095 | */ |
4096 | avail = b->bufsiz; | |
4097 | b->end = b->buf + avail; | |
4098 | b->ptr = b->end; | |
4099 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4100 | /* | |
71200d45 | 4101 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4102 | */ |
4103 | b->posn -= b->bufsiz; | |
4104 | } | |
4105 | if (avail > (SSize_t) count) { | |
4106 | /* | |
71200d45 | 4107 | * If we have space for more than count, just move count |
14a5cf38 JH |
4108 | */ |
4109 | avail = count; | |
4110 | } | |
4111 | if (avail > 0) { | |
4112 | b->ptr -= avail; | |
4113 | buf -= avail; | |
4114 | /* | |
4115 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4116 | * there |
14a5cf38 JH |
4117 | */ |
4118 | if (buf != b->ptr) { | |
4119 | Copy(buf, b->ptr, avail, STDCHAR); | |
4120 | } | |
4121 | count -= avail; | |
4122 | unread += avail; | |
4123 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4124 | } | |
4125 | } | |
93679785 NIS |
4126 | if (count > 0) { |
4127 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4128 | } | |
14a5cf38 | 4129 | return unread; |
760ac839 LW |
4130 | } |
4131 | ||
9e353e3b | 4132 | SSize_t |
f62ce20a | 4133 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4134 | { |
de009b76 | 4135 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4136 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4137 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4138 | Size_t written = 0; |
4139 | if (!b->buf) | |
4140 | PerlIO_get_base(f); | |
4141 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4142 | return 0; | |
0678cb22 NIS |
4143 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4144 | if (PerlIO_flush(f) != 0) { | |
4145 | return 0; | |
4146 | } | |
4147 | } | |
ee56a6b9 CS |
4148 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4149 | flushptr = buf + count; | |
4150 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4151 | --flushptr; | |
4152 | } | |
14a5cf38 JH |
4153 | while (count > 0) { |
4154 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
4155 | if ((SSize_t) count < avail) | |
4156 | avail = count; | |
ee56a6b9 CS |
4157 | if (flushptr > buf && flushptr <= buf + avail) |
4158 | avail = flushptr - buf; | |
14a5cf38 | 4159 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4160 | if (avail) { |
4161 | Copy(buf, b->ptr, avail, STDCHAR); | |
4162 | count -= avail; | |
4163 | buf += avail; | |
4164 | written += avail; | |
4165 | b->ptr += avail; | |
4166 | if (buf == flushptr) | |
4167 | PerlIO_flush(f); | |
14a5cf38 JH |
4168 | } |
4169 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4170 | if (PerlIO_flush(f) == -1) |
4171 | return -1; | |
14a5cf38 JH |
4172 | } |
4173 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4174 | PerlIO_flush(f); | |
4175 | return written; | |
9e353e3b NIS |
4176 | } |
4177 | ||
94a175e1 | 4178 | IV |
f62ce20a | 4179 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4180 | { |
14a5cf38 JH |
4181 | IV code; |
4182 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4183 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4184 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4185 | if (code == 0) { | |
de009b76 | 4186 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4187 | b->posn = PerlIO_tell(PerlIONext(f)); |
4188 | } | |
9e353e3b | 4189 | } |
14a5cf38 | 4190 | return code; |
9e353e3b NIS |
4191 | } |
4192 | ||
4193 | Off_t | |
f62ce20a | 4194 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4195 | { |
dcda55fc | 4196 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4197 | /* |
71200d45 | 4198 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4199 | */ |
4200 | Off_t posn = b->posn; | |
37725cdc | 4201 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4202 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4203 | #if 1 | |
4204 | /* As O_APPEND files are normally shared in some sense it is better | |
4205 | to flush : | |
4206 | */ | |
4207 | PerlIO_flush(f); | |
4208 | #else | |
37725cdc | 4209 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4210 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4211 | #endif | |
4212 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4213 | } | |
14a5cf38 JH |
4214 | if (b->buf) { |
4215 | /* | |
71200d45 | 4216 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4217 | */ |
4218 | posn += (b->ptr - b->buf); | |
4219 | } | |
4220 | return posn; | |
9e353e3b NIS |
4221 | } |
4222 | ||
4223 | IV | |
44798d05 NIS |
4224 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4225 | { | |
de009b76 AL |
4226 | const IV code = PerlIOBase_popped(aTHX_ f); |
4227 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4228 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4229 | Safefree(b->buf); | |
4230 | } | |
dcda55fc | 4231 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4232 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4233 | return code; | |
4234 | } | |
4235 | ||
4236 | IV | |
f62ce20a | 4237 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4238 | { |
de009b76 AL |
4239 | const IV code = PerlIOBase_close(aTHX_ f); |
4240 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4241 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4242 | Safefree(b->buf); |
14a5cf38 | 4243 | } |
dcda55fc | 4244 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4245 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4246 | return code; | |
760ac839 LW |
4247 | } |
4248 | ||
9e353e3b | 4249 | STDCHAR * |
f62ce20a | 4250 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4251 | { |
dcda55fc | 4252 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4253 | if (!b->buf) |
4254 | PerlIO_get_base(f); | |
4255 | return b->ptr; | |
9e353e3b NIS |
4256 | } |
4257 | ||
05d1247b | 4258 | SSize_t |
f62ce20a | 4259 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4260 | { |
dcda55fc | 4261 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4262 | if (!b->buf) |
4263 | PerlIO_get_base(f); | |
4264 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4265 | return (b->end - b->ptr); | |
4266 | return 0; | |
9e353e3b NIS |
4267 | } |
4268 | ||
4269 | STDCHAR * | |
f62ce20a | 4270 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4271 | { |
dcda55fc | 4272 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4273 | PERL_UNUSED_CONTEXT; |
4274 | ||
14a5cf38 JH |
4275 | if (!b->buf) { |
4276 | if (!b->bufsiz) | |
1810cd7c | 4277 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4278 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4279 | if (!b->buf) { |
4280 | b->buf = (STDCHAR *) & b->oneword; | |
4281 | b->bufsiz = sizeof(b->oneword); | |
4282 | } | |
dcda55fc | 4283 | b->end = b->ptr = b->buf; |
06da4f11 | 4284 | } |
14a5cf38 | 4285 | return b->buf; |
9e353e3b NIS |
4286 | } |
4287 | ||
4288 | Size_t | |
f62ce20a | 4289 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4290 | { |
dcda55fc | 4291 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4292 | if (!b->buf) |
4293 | PerlIO_get_base(f); | |
4294 | return (b->end - b->buf); | |
9e353e3b NIS |
4295 | } |
4296 | ||
4297 | void | |
f62ce20a | 4298 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4299 | { |
dcda55fc | 4300 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4301 | #ifndef DEBUGGING |
4302 | PERL_UNUSED_ARG(cnt); | |
4303 | #endif | |
14a5cf38 JH |
4304 | if (!b->buf) |
4305 | PerlIO_get_base(f); | |
4306 | b->ptr = ptr; | |
b727803b RGS |
4307 | assert(PerlIO_get_cnt(f) == cnt); |
4308 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4309 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4310 | } |
4311 | ||
71200d45 | 4312 | PerlIO * |
ecdeb87c | 4313 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4314 | { |
ecdeb87c | 4315 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4316 | } |
4317 | ||
4318 | ||
4319 | ||
27da23d5 | 4320 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4321 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4322 | "perlio", |
4323 | sizeof(PerlIOBuf), | |
86e05cf2 | 4324 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4325 | PerlIOBuf_pushed, |
44798d05 | 4326 | PerlIOBuf_popped, |
14a5cf38 | 4327 | PerlIOBuf_open, |
86e05cf2 | 4328 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4329 | NULL, |
4330 | PerlIOBase_fileno, | |
71200d45 | 4331 | PerlIOBuf_dup, |
14a5cf38 JH |
4332 | PerlIOBuf_read, |
4333 | PerlIOBuf_unread, | |
4334 | PerlIOBuf_write, | |
4335 | PerlIOBuf_seek, | |
4336 | PerlIOBuf_tell, | |
4337 | PerlIOBuf_close, | |
4338 | PerlIOBuf_flush, | |
4339 | PerlIOBuf_fill, | |
4340 | PerlIOBase_eof, | |
4341 | PerlIOBase_error, | |
4342 | PerlIOBase_clearerr, | |
4343 | PerlIOBase_setlinebuf, | |
4344 | PerlIOBuf_get_base, | |
4345 | PerlIOBuf_bufsiz, | |
4346 | PerlIOBuf_get_ptr, | |
4347 | PerlIOBuf_get_cnt, | |
4348 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4349 | }; |
4350 | ||
66ecd56b | 4351 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4352 | /* |
71200d45 | 4353 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4354 | */ |
5e2ab84b NIS |
4355 | |
4356 | IV | |
f62ce20a | 4357 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4358 | { |
14a5cf38 | 4359 | /* |
71200d45 | 4360 | * Should never happen |
14a5cf38 JH |
4361 | */ |
4362 | PerlIO_flush(f); | |
4363 | return 0; | |
5e2ab84b NIS |
4364 | } |
4365 | ||
4366 | IV | |
f62ce20a | 4367 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4368 | { |
14a5cf38 | 4369 | /* |
71200d45 | 4370 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4371 | */ |
4372 | PerlIO_flush(f); | |
4373 | return PerlIO_close(f); | |
5e2ab84b NIS |
4374 | } |
4375 | ||
94a175e1 | 4376 | IV |
f62ce20a | 4377 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4378 | { |
14a5cf38 | 4379 | /* |
71200d45 | 4380 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4381 | */ |
4382 | PerlIO_flush(f); | |
4383 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4384 | } |
4385 | ||
4386 | ||
4387 | IV | |
f62ce20a | 4388 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4389 | { |
dcda55fc | 4390 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4391 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4392 | Safefree(b->buf); |
14a5cf38 JH |
4393 | b->buf = NULL; |
4394 | } | |
4395 | PerlIO_pop(aTHX_ f); | |
4396 | return 0; | |
5e2ab84b NIS |
4397 | } |
4398 | ||
4399 | void | |
f62ce20a | 4400 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4401 | { |
14a5cf38 JH |
4402 | if (cnt <= 0) { |
4403 | PerlIO_flush(f); | |
4404 | } | |
4405 | else { | |
f62ce20a | 4406 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4407 | } |
5e2ab84b NIS |
4408 | } |
4409 | ||
4410 | IV | |
2dc2558e | 4411 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4412 | { |
de009b76 | 4413 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4414 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4415 | /* |
71200d45 NIS |
4416 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4417 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4418 | */ |
4419 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4420 | (PerlIOBase(PerlIONext(f))-> | |
4421 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4422 | return code; | |
5e2ab84b NIS |
4423 | } |
4424 | ||
4425 | SSize_t | |
f62ce20a | 4426 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4427 | { |
14a5cf38 JH |
4428 | SSize_t avail = PerlIO_get_cnt(f); |
4429 | SSize_t got = 0; | |
eb160463 | 4430 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4431 | avail = count; |
4432 | if (avail > 0) | |
f62ce20a | 4433 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4434 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4435 | const SSize_t more = |
14a5cf38 JH |
4436 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4437 | if (more >= 0 || got == 0) | |
4438 | got += more; | |
4439 | } | |
4440 | return got; | |
5e2ab84b NIS |
4441 | } |
4442 | ||
27da23d5 | 4443 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4444 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4445 | "pending", |
4446 | sizeof(PerlIOBuf), | |
86e05cf2 | 4447 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4448 | PerlIOPending_pushed, |
44798d05 | 4449 | PerlIOBuf_popped, |
14a5cf38 | 4450 | NULL, |
86e05cf2 | 4451 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4452 | NULL, |
4453 | PerlIOBase_fileno, | |
71200d45 | 4454 | PerlIOBuf_dup, |
14a5cf38 JH |
4455 | PerlIOPending_read, |
4456 | PerlIOBuf_unread, | |
4457 | PerlIOBuf_write, | |
4458 | PerlIOPending_seek, | |
4459 | PerlIOBuf_tell, | |
4460 | PerlIOPending_close, | |
4461 | PerlIOPending_flush, | |
4462 | PerlIOPending_fill, | |
4463 | PerlIOBase_eof, | |
4464 | PerlIOBase_error, | |
4465 | PerlIOBase_clearerr, | |
4466 | PerlIOBase_setlinebuf, | |
4467 | PerlIOBuf_get_base, | |
4468 | PerlIOBuf_bufsiz, | |
4469 | PerlIOBuf_get_ptr, | |
4470 | PerlIOBuf_get_cnt, | |
4471 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4472 | }; |
4473 | ||
4474 | ||
4475 | ||
4476 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4477 | /* |
4478 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4479 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4480 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4481 | * |
4482 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4483 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4484 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4485 | * that it ends at c->nl; these two cases can be distinguished by | |
4486 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4487 | * _unread() and _flush() calls. | |
4488 | * It only matters for read operations. | |
66ecd56b NIS |
4489 | */ |
4490 | ||
14a5cf38 | 4491 | typedef struct { |
22569500 NIS |
4492 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4493 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4494 | * buffer */ |
99efab12 NIS |
4495 | } PerlIOCrlf; |
4496 | ||
ff1e3883 JD |
4497 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4498 | * Otherwise the :crlf layer would always revert back to | |
4499 | * raw mode. | |
4500 | */ | |
4501 | static void | |
4502 | S_inherit_utf8_flag(PerlIO *f) | |
4503 | { | |
4504 | PerlIO *g = PerlIONext(f); | |
4505 | if (PerlIOValid(g)) { | |
4506 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4507 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4508 | } | |
4509 | } | |
4510 | } | |
4511 | ||
f5b9d040 | 4512 | IV |
2dc2558e | 4513 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4514 | { |
14a5cf38 JH |
4515 | IV code; |
4516 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4517 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4518 | #if 0 |
14a5cf38 | 4519 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4520 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4521 | PerlIOBase(f)->flags); |
5e2ab84b | 4522 | #endif |
8229d19f | 4523 | { |
5da08ab0 LT |
4524 | /* If the old top layer is a CRLF layer, reactivate it (if |
4525 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4526 | PerlIO *g = PerlIONext(f); |
7826b36f | 4527 | if (PerlIOValid(g)) { |
8229d19f JH |
4528 | PerlIOl *b = PerlIOBase(g); |
4529 | if (b && b->tab == &PerlIO_crlf) { | |
4530 | if (!(b->flags & PERLIO_F_CRLF)) | |
4531 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4532 | S_inherit_utf8_flag(g); |
8229d19f JH |
4533 | PerlIO_pop(aTHX_ f); |
4534 | return code; | |
7826b36f | 4535 | } |
8229d19f JH |
4536 | } |
4537 | } | |
ff1e3883 | 4538 | S_inherit_utf8_flag(f); |
14a5cf38 | 4539 | return code; |
f5b9d040 NIS |
4540 | } |
4541 | ||
4542 | ||
99efab12 | 4543 | SSize_t |
f62ce20a | 4544 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4545 | { |
dcda55fc | 4546 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4547 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4548 | *(c->nl) = 0xd; |
4549 | c->nl = NULL; | |
4550 | } | |
4551 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4552 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4553 | else { |
4554 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4555 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4556 | SSize_t unread = 0; | |
4557 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4558 | PerlIO_flush(f); | |
4559 | if (!b->buf) | |
4560 | PerlIO_get_base(f); | |
4561 | if (b->buf) { | |
4562 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4563 | b->end = b->ptr = b->buf + b->bufsiz; | |
4564 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4565 | b->posn -= b->bufsiz; | |
4566 | } | |
4567 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4568 | const int ch = *--buf; |
14a5cf38 JH |
4569 | if (ch == '\n') { |
4570 | if (b->ptr - 2 >= b->buf) { | |
4571 | *--(b->ptr) = 0xa; | |
4572 | *--(b->ptr) = 0xd; | |
4573 | unread++; | |
4574 | count--; | |
4575 | } | |
4576 | else { | |
93c2c2ec IZ |
4577 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4578 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4579 | unread++; | |
4580 | count--; | |
14a5cf38 JH |
4581 | } |
4582 | } | |
4583 | else { | |
4584 | *--(b->ptr) = ch; | |
4585 | unread++; | |
4586 | count--; | |
4587 | } | |
4588 | } | |
4589 | } | |
4590 | return unread; | |
4591 | } | |
99efab12 NIS |
4592 | } |
4593 | ||
93c2c2ec | 4594 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4595 | SSize_t |
f62ce20a | 4596 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4597 | { |
dcda55fc | 4598 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4599 | if (!b->buf) |
4600 | PerlIO_get_base(f); | |
4601 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4602 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4603 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4604 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4605 | scan: |
4606 | while (nl < b->end && *nl != 0xd) | |
4607 | nl++; | |
4608 | if (nl < b->end && *nl == 0xd) { | |
4609 | test: | |
4610 | if (nl + 1 < b->end) { | |
4611 | if (nl[1] == 0xa) { | |
4612 | *nl = '\n'; | |
4613 | c->nl = nl; | |
4614 | } | |
4615 | else { | |
4616 | /* | |
71200d45 | 4617 | * Not CR,LF but just CR |
14a5cf38 JH |
4618 | */ |
4619 | nl++; | |
4620 | goto scan; | |
4621 | } | |
4622 | } | |
4623 | else { | |
4624 | /* | |
71200d45 | 4625 | * Blast - found CR as last char in buffer |
14a5cf38 | 4626 | */ |
e87a358a | 4627 | |
14a5cf38 JH |
4628 | if (b->ptr < nl) { |
4629 | /* | |
4630 | * They may not care, defer work as long as | |
71200d45 | 4631 | * possible |
14a5cf38 | 4632 | */ |
a0d1d361 | 4633 | c->nl = nl; |
14a5cf38 JH |
4634 | return (nl - b->ptr); |
4635 | } | |
4636 | else { | |
4637 | int code; | |
22569500 | 4638 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4639 | * flush() is concerned */ |
22569500 | 4640 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4641 | /* Note as we have moved buf up flush's |
4642 | posn += ptr-buf | |
4643 | will naturally make posn point at CR | |
4644 | */ | |
22569500 NIS |
4645 | b->bufsiz--; /* Buffer is thus smaller */ |
4646 | code = PerlIO_fill(f); /* Fetch some more */ | |
4647 | b->bufsiz++; /* Restore size for next time */ | |
4648 | b->buf--; /* Point at space */ | |
4649 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4650 | * off */ |
22569500 | 4651 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4652 | if (code == 0) |
22569500 | 4653 | goto test; /* fill() call worked */ |
14a5cf38 | 4654 | /* |
71200d45 | 4655 | * CR at EOF - just fall through |
14a5cf38 | 4656 | */ |
a0d1d361 | 4657 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4658 | } |
4659 | } | |
4660 | } | |
4661 | } | |
4662 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4663 | } | |
4664 | return 0; | |
99efab12 NIS |
4665 | } |
4666 | ||
4667 | void | |
f62ce20a | 4668 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4669 | { |
dcda55fc AL |
4670 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4671 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4672 | if (!b->buf) |
4673 | PerlIO_get_base(f); | |
4674 | if (!ptr) { | |
a0d1d361 | 4675 | if (c->nl) { |
14a5cf38 | 4676 | ptr = c->nl + 1; |
22569500 | 4677 | if (ptr == b->end && *c->nl == 0xd) { |
486ec47a | 4678 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4679 | ptr--; |
4680 | } | |
4681 | } | |
14a5cf38 JH |
4682 | else { |
4683 | ptr = b->end; | |
14a5cf38 JH |
4684 | } |
4685 | ptr -= cnt; | |
4686 | } | |
4687 | else { | |
6f207bd3 | 4688 | NOOP; |
3b4bd3fd | 4689 | #if 0 |
14a5cf38 | 4690 | /* |
71200d45 | 4691 | * Test code - delete when it works ... |
14a5cf38 | 4692 | */ |
3b4bd3fd | 4693 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4694 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4695 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
486ec47a | 4696 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4697 | chk--; |
22569500 | 4698 | } |
14a5cf38 JH |
4699 | chk -= cnt; |
4700 | ||
a0d1d361 | 4701 | if (ptr != chk ) { |
99ef548b | 4702 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4703 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4704 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4705 | } |
99ef548b | 4706 | #endif |
14a5cf38 JH |
4707 | } |
4708 | if (c->nl) { | |
4709 | if (ptr > c->nl) { | |
4710 | /* | |
71200d45 | 4711 | * They have taken what we lied about |
14a5cf38 JH |
4712 | */ |
4713 | *(c->nl) = 0xd; | |
4714 | c->nl = NULL; | |
4715 | ptr++; | |
4716 | } | |
4717 | } | |
4718 | b->ptr = ptr; | |
4719 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4720 | } |
4721 | ||
4722 | SSize_t | |
f62ce20a | 4723 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4724 | { |
14a5cf38 | 4725 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4726 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4727 | else { |
dcda55fc | 4728 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4729 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4730 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4731 | if (!b->buf) |
4732 | PerlIO_get_base(f); | |
4733 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4734 | return 0; | |
4735 | while (buf < ebuf) { | |
dcda55fc | 4736 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4737 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4738 | while (buf < ebuf && b->ptr < eptr) { | |
4739 | if (*buf == '\n') { | |
4740 | if ((b->ptr + 2) > eptr) { | |
4741 | /* | |
71200d45 | 4742 | * Not room for both |
14a5cf38 JH |
4743 | */ |
4744 | PerlIO_flush(f); | |
4745 | break; | |
4746 | } | |
4747 | else { | |
22569500 NIS |
4748 | *(b->ptr)++ = 0xd; /* CR */ |
4749 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4750 | buf++; |
4751 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4752 | PerlIO_flush(f); | |
4753 | break; | |
4754 | } | |
4755 | } | |
4756 | } | |
4757 | else { | |
dcda55fc | 4758 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4759 | } |
4760 | if (b->ptr >= eptr) { | |
4761 | PerlIO_flush(f); | |
4762 | break; | |
4763 | } | |
4764 | } | |
4765 | } | |
4766 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4767 | PerlIO_flush(f); | |
4768 | return (buf - (STDCHAR *) vbuf); | |
4769 | } | |
99efab12 NIS |
4770 | } |
4771 | ||
4772 | IV | |
f62ce20a | 4773 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4774 | { |
dcda55fc | 4775 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4776 | if (c->nl) { |
4777 | *(c->nl) = 0xd; | |
4778 | c->nl = NULL; | |
4779 | } | |
f62ce20a | 4780 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4781 | } |
4782 | ||
86e05cf2 NIS |
4783 | IV |
4784 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4785 | { | |
4786 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4787 | /* In text mode - flush any pending stuff and flip it */ | |
4788 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4789 | #ifndef PERLIO_USING_CRLF | |
4790 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4791 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4792 | #endif |
4793 | } | |
4794 | return 0; | |
4795 | } | |
4796 | ||
27da23d5 | 4797 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4798 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4799 | "crlf", |
4800 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4801 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4802 | PerlIOCrlf_pushed, |
44798d05 | 4803 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4804 | PerlIOBuf_open, |
86e05cf2 | 4805 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4806 | NULL, |
4807 | PerlIOBase_fileno, | |
71200d45 | 4808 | PerlIOBuf_dup, |
de009b76 | 4809 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4810 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4811 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4812 | PerlIOBuf_seek, |
4813 | PerlIOBuf_tell, | |
4814 | PerlIOBuf_close, | |
4815 | PerlIOCrlf_flush, | |
4816 | PerlIOBuf_fill, | |
4817 | PerlIOBase_eof, | |
4818 | PerlIOBase_error, | |
4819 | PerlIOBase_clearerr, | |
4820 | PerlIOBase_setlinebuf, | |
4821 | PerlIOBuf_get_base, | |
4822 | PerlIOBuf_bufsiz, | |
4823 | PerlIOBuf_get_ptr, | |
4824 | PerlIOCrlf_get_cnt, | |
4825 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4826 | }; |
4827 | ||
06da4f11 NIS |
4828 | #ifdef HAS_MMAP |
4829 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4830 | /* |
71200d45 | 4831 | * mmap as "buffer" layer |
14a5cf38 | 4832 | */ |
06da4f11 | 4833 | |
14a5cf38 | 4834 | typedef struct { |
22569500 NIS |
4835 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4836 | Mmap_t mptr; /* Mapped address */ | |
4837 | Size_t len; /* mapped length */ | |
4838 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4839 | } PerlIOMmap; |
4840 | ||
4841 | IV | |
f62ce20a | 4842 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4843 | { |
27da23d5 | 4844 | dVAR; |
de009b76 AL |
4845 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4846 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4847 | IV code = 0; |
4848 | if (m->len) | |
4849 | abort(); | |
4850 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4851 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4852 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4853 | Stat_t st; |
4854 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4855 | if (code == 0 && S_ISREG(st.st_mode)) { |
4856 | SSize_t len = st.st_size - b->posn; | |
4857 | if (len > 0) { | |
4858 | Off_t posn; | |
27da23d5 JH |
4859 | if (PL_mmap_page_size <= 0) |
4860 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4861 | PL_mmap_page_size); | |
14a5cf38 JH |
4862 | if (b->posn < 0) { |
4863 | /* | |
4864 | * This is a hack - should never happen - open should | |
71200d45 | 4865 | * have set it ! |
14a5cf38 JH |
4866 | */ |
4867 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4868 | } | |
27da23d5 | 4869 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 | 4870 | len = st.st_size - posn; |
b91fbb93 | 4871 | m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
14a5cf38 | 4872 | if (m->mptr && m->mptr != (Mmap_t) - 1) { |
a5262162 | 4873 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4874 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4875 | #endif |
a5262162 | 4876 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4877 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4878 | #endif |
14a5cf38 JH |
4879 | PerlIOBase(f)->flags = |
4880 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4881 | b->end = ((STDCHAR *) m->mptr) + len; | |
4882 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4883 | b->ptr = b->buf; | |
4884 | m->len = len; | |
4885 | } | |
4886 | else { | |
4887 | b->buf = NULL; | |
4888 | } | |
4889 | } | |
4890 | else { | |
4891 | PerlIOBase(f)->flags = | |
4892 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4893 | b->buf = NULL; | |
4894 | b->ptr = b->end = b->ptr; | |
4895 | code = -1; | |
4896 | } | |
4897 | } | |
4898 | } | |
4899 | return code; | |
06da4f11 NIS |
4900 | } |
4901 | ||
4902 | IV | |
e87a358a | 4903 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4904 | { |
dcda55fc | 4905 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4906 | IV code = 0; |
4907 | if (m->len) { | |
dcda55fc | 4908 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4909 | if (b->buf) { |
1ccb7c8d JH |
4910 | /* The munmap address argument is tricky: depending on the |
4911 | * standard it is either "void *" or "caddr_t" (which is | |
4912 | * usually "char *" (signed or unsigned). If we cast it | |
4913 | * to "void *", those that have it caddr_t and an uptight | |
4914 | * C++ compiler, will freak out. But casting it as char* | |
4915 | * should work. Maybe. (Using Mmap_t figured out by | |
4916 | * Configure doesn't always work, apparently.) */ | |
4917 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4918 | b->buf = NULL; |
4919 | m->len = 0; | |
4920 | m->mptr = NULL; | |
4921 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4922 | code = -1; | |
4923 | } | |
4924 | b->ptr = b->end = b->buf; | |
4925 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4926 | } | |
4927 | return code; | |
06da4f11 NIS |
4928 | } |
4929 | ||
4930 | STDCHAR * | |
f62ce20a | 4931 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4932 | { |
dcda55fc AL |
4933 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4934 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4935 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4936 | /* | |
71200d45 | 4937 | * Already have a readbuffer in progress |
14a5cf38 JH |
4938 | */ |
4939 | return b->buf; | |
4940 | } | |
4941 | if (b->buf) { | |
4942 | /* | |
71200d45 | 4943 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4944 | */ |
22569500 NIS |
4945 | m->bbuf = b->buf; /* save it in case we need it again */ |
4946 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4947 | } |
4948 | if (!b->buf) { | |
22569500 | 4949 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4950 | if (!b->buf) { |
4951 | /* | |
71200d45 | 4952 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4953 | */ |
4954 | b->buf = m->bbuf; | |
4955 | } | |
4956 | } | |
4957 | b->ptr = b->end = b->buf; | |
4958 | if (b->buf) | |
4959 | return b->buf; | |
f62ce20a | 4960 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4961 | } |
4962 | ||
4963 | SSize_t | |
f62ce20a | 4964 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4965 | { |
dcda55fc AL |
4966 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4967 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4968 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4969 | PerlIO_flush(f); | |
4970 | if (b->ptr && (b->ptr - count) >= b->buf | |
4971 | && memEQ(b->ptr - count, vbuf, count)) { | |
4972 | b->ptr -= count; | |
4973 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4974 | return count; | |
4975 | } | |
4976 | if (m->len) { | |
4977 | /* | |
71200d45 | 4978 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4979 | */ |
4980 | PerlIO_flush(f); | |
4981 | /* | |
71200d45 | 4982 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4983 | */ |
4984 | if (!b->buf && m->bbuf) | |
4985 | b->buf = m->bbuf; | |
4986 | if (!b->buf) { | |
f62ce20a | 4987 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4988 | m->bbuf = b->buf; |
4989 | } | |
4990 | } | |
f62ce20a | 4991 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4992 | } |
4993 | ||
4994 | SSize_t | |
f62ce20a | 4995 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4996 | { |
de009b76 AL |
4997 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4998 | PerlIOBuf * const b = &m->base; | |
4999 | ||
14a5cf38 JH |
5000 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
5001 | /* | |
71200d45 | 5002 | * No, or wrong sort of, buffer |
14a5cf38 JH |
5003 | */ |
5004 | if (m->len) { | |
e87a358a | 5005 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
5006 | return 0; |
5007 | } | |
5008 | /* | |
71200d45 | 5009 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
5010 | */ |
5011 | if (!b->buf && m->bbuf) | |
5012 | b->buf = m->bbuf; | |
5013 | if (!b->buf) { | |
f62ce20a | 5014 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
5015 | m->bbuf = b->buf; |
5016 | } | |
06da4f11 | 5017 | } |
f62ce20a | 5018 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
5019 | } |
5020 | ||
5021 | IV | |
f62ce20a | 5022 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 5023 | { |
dcda55fc AL |
5024 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
5025 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 5026 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 5027 | /* |
71200d45 | 5028 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
5029 | */ |
5030 | if (b->buf) { | |
5031 | if (m->len) { | |
5032 | /* | |
71200d45 | 5033 | * Unmap the buffer |
14a5cf38 | 5034 | */ |
e87a358a | 5035 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
5036 | code = -1; |
5037 | } | |
5038 | else { | |
5039 | /* | |
5040 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 5041 | * remember it in case we need one later |
14a5cf38 JH |
5042 | */ |
5043 | m->bbuf = b->buf; | |
5044 | } | |
5045 | } | |
5046 | return code; | |
06da4f11 NIS |
5047 | } |
5048 | ||
5049 | IV | |
f62ce20a | 5050 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 5051 | { |
dcda55fc | 5052 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
5053 | IV code = PerlIO_flush(f); |
5054 | if (code == 0 && !b->buf) { | |
f62ce20a | 5055 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
5056 | } |
5057 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 5058 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
5059 | } |
5060 | return code; | |
06da4f11 NIS |
5061 | } |
5062 | ||
5063 | IV | |
f62ce20a | 5064 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 5065 | { |
dcda55fc AL |
5066 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
5067 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
5068 | IV code = PerlIO_flush(f); |
5069 | if (m->bbuf) { | |
5070 | b->buf = m->bbuf; | |
5071 | m->bbuf = NULL; | |
5072 | b->ptr = b->end = b->buf; | |
5073 | } | |
f62ce20a | 5074 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
5075 | code = -1; |
5076 | return code; | |
06da4f11 NIS |
5077 | } |
5078 | ||
71200d45 | 5079 | PerlIO * |
ecdeb87c | 5080 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 5081 | { |
ecdeb87c | 5082 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
5083 | } |
5084 | ||
06da4f11 | 5085 | |
27da23d5 | 5086 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 5087 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
5088 | "mmap", |
5089 | sizeof(PerlIOMmap), | |
86e05cf2 | 5090 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 5091 | PerlIOBuf_pushed, |
44798d05 | 5092 | PerlIOBuf_popped, |
14a5cf38 | 5093 | PerlIOBuf_open, |
86e05cf2 | 5094 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
5095 | NULL, |
5096 | PerlIOBase_fileno, | |
71200d45 | 5097 | PerlIOMmap_dup, |
14a5cf38 JH |
5098 | PerlIOBuf_read, |
5099 | PerlIOMmap_unread, | |
5100 | PerlIOMmap_write, | |
5101 | PerlIOBuf_seek, | |
5102 | PerlIOBuf_tell, | |
5103 | PerlIOBuf_close, | |
5104 | PerlIOMmap_flush, | |
5105 | PerlIOMmap_fill, | |
5106 | PerlIOBase_eof, | |
5107 | PerlIOBase_error, | |
5108 | PerlIOBase_clearerr, | |
5109 | PerlIOBase_setlinebuf, | |
5110 | PerlIOMmap_get_base, | |
5111 | PerlIOBuf_bufsiz, | |
5112 | PerlIOBuf_get_ptr, | |
5113 | PerlIOBuf_get_cnt, | |
5114 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
5115 | }; |
5116 | ||
22569500 | 5117 | #endif /* HAS_MMAP */ |
06da4f11 | 5118 | |
9e353e3b | 5119 | PerlIO * |
e87a358a | 5120 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 5121 | { |
97aff369 | 5122 | dVAR; |
a1ea730d | 5123 | if (!PL_perlio) { |
14a5cf38 JH |
5124 | PerlIO_stdstreams(aTHX); |
5125 | } | |
303f2dc3 | 5126 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
5127 | } |
5128 | ||
9e353e3b | 5129 | PerlIO * |
e87a358a | 5130 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 5131 | { |
97aff369 | 5132 | dVAR; |
a1ea730d | 5133 | if (!PL_perlio) { |
14a5cf38 JH |
5134 | PerlIO_stdstreams(aTHX); |
5135 | } | |
303f2dc3 | 5136 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
5137 | } |
5138 | ||
9e353e3b | 5139 | PerlIO * |
e87a358a | 5140 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 5141 | { |
97aff369 | 5142 | dVAR; |
a1ea730d | 5143 | if (!PL_perlio) { |
14a5cf38 JH |
5144 | PerlIO_stdstreams(aTHX); |
5145 | } | |
303f2dc3 | 5146 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
5147 | } |
5148 | ||
5149 | /*--------------------------------------------------------------------------------------*/ | |
5150 | ||
9e353e3b NIS |
5151 | char * |
5152 | PerlIO_getname(PerlIO *f, char *buf) | |
5153 | { | |
14a5cf38 | 5154 | dTHX; |
a15cef0c | 5155 | #ifdef VMS |
73d840c0 | 5156 | char *name = NULL; |
7659f319 | 5157 | bool exported = FALSE; |
14a5cf38 | 5158 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
5159 | if (!stdio) { |
5160 | stdio = PerlIO_exportFILE(f,0); | |
5161 | exported = TRUE; | |
5162 | } | |
5163 | if (stdio) { | |
14a5cf38 | 5164 | name = fgetname(stdio, buf); |
7659f319 CB |
5165 | if (exported) PerlIO_releaseFILE(f,stdio); |
5166 | } | |
73d840c0 | 5167 | return name; |
a15cef0c | 5168 | #else |
8772537c AL |
5169 | PERL_UNUSED_ARG(f); |
5170 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 5171 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 5172 | return NULL; |
a15cef0c | 5173 | #endif |
9e353e3b NIS |
5174 | } |
5175 | ||
5176 | ||
5177 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
5178 | /* |
5179 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 5180 | * terms of above |
14a5cf38 | 5181 | */ |
9e353e3b | 5182 | |
e87a358a NIS |
5183 | #undef PerlIO_fdopen |
5184 | PerlIO * | |
5185 | PerlIO_fdopen(int fd, const char *mode) | |
5186 | { | |
5187 | dTHX; | |
bd61b366 | 5188 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
5189 | } |
5190 | ||
5191 | #undef PerlIO_open | |
5192 | PerlIO * | |
5193 | PerlIO_open(const char *path, const char *mode) | |
5194 | { | |
5195 | dTHX; | |
42d9b98d | 5196 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 5197 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
5198 | } |
5199 | ||
5200 | #undef Perlio_reopen | |
5201 | PerlIO * | |
5202 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
5203 | { | |
5204 | dTHX; | |
42d9b98d | 5205 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 5206 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
5207 | } |
5208 | ||
9e353e3b | 5209 | #undef PerlIO_getc |
6f9d8c32 | 5210 | int |
9e353e3b | 5211 | PerlIO_getc(PerlIO *f) |
760ac839 | 5212 | { |
e87a358a | 5213 | dTHX; |
14a5cf38 | 5214 | STDCHAR buf[1]; |
de009b76 | 5215 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
5216 | return (unsigned char) buf[0]; |
5217 | } | |
5218 | return EOF; | |
313ca112 NIS |
5219 | } |
5220 | ||
5221 | #undef PerlIO_ungetc | |
5222 | int | |
5223 | PerlIO_ungetc(PerlIO *f, int ch) | |
5224 | { | |
e87a358a | 5225 | dTHX; |
14a5cf38 JH |
5226 | if (ch != EOF) { |
5227 | STDCHAR buf = ch; | |
5228 | if (PerlIO_unread(f, &buf, 1) == 1) | |
5229 | return ch; | |
5230 | } | |
5231 | return EOF; | |
760ac839 LW |
5232 | } |
5233 | ||
9e353e3b NIS |
5234 | #undef PerlIO_putc |
5235 | int | |
5236 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 5237 | { |
e87a358a | 5238 | dTHX; |
14a5cf38 JH |
5239 | STDCHAR buf = ch; |
5240 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5241 | } |
5242 | ||
9e353e3b | 5243 | #undef PerlIO_puts |
760ac839 | 5244 | int |
9e353e3b | 5245 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5246 | { |
e87a358a | 5247 | dTHX; |
dcda55fc | 5248 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5249 | } |
5250 | ||
5251 | #undef PerlIO_rewind | |
5252 | void | |
c78749f2 | 5253 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5254 | { |
e87a358a | 5255 | dTHX; |
14a5cf38 JH |
5256 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5257 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5258 | } |
5259 | ||
5260 | #undef PerlIO_vprintf | |
5261 | int | |
5262 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5263 | { | |
14a5cf38 | 5264 | dTHX; |
53ce71d3 | 5265 | SV * sv; |
b83604b4 | 5266 | const char *s; |
14a5cf38 JH |
5267 | STRLEN len; |
5268 | SSize_t wrote; | |
2cc61e15 | 5269 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5270 | va_list apc; |
5271 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5272 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 5273 | #else |
53ce71d3 | 5274 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5275 | #endif |
b83604b4 | 5276 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5277 | wrote = PerlIO_write(f, s, len); |
5278 | SvREFCNT_dec(sv); | |
5279 | return wrote; | |
760ac839 LW |
5280 | } |
5281 | ||
5282 | #undef PerlIO_printf | |
6f9d8c32 | 5283 | int |
14a5cf38 | 5284 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5285 | { |
14a5cf38 JH |
5286 | va_list ap; |
5287 | int result; | |
5288 | va_start(ap, fmt); | |
5289 | result = PerlIO_vprintf(f, fmt, ap); | |
5290 | va_end(ap); | |
5291 | return result; | |
760ac839 LW |
5292 | } |
5293 | ||
5294 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5295 | int |
14a5cf38 | 5296 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5297 | { |
e87a358a | 5298 | dTHX; |
14a5cf38 JH |
5299 | va_list ap; |
5300 | int result; | |
5301 | va_start(ap, fmt); | |
5302 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5303 | va_end(ap); | |
5304 | return result; | |
760ac839 LW |
5305 | } |
5306 | ||
5307 | #undef PerlIO_tmpfile | |
5308 | PerlIO * | |
c78749f2 | 5309 | PerlIO_tmpfile(void) |
760ac839 | 5310 | { |
2941a2e1 JH |
5311 | dTHX; |
5312 | PerlIO *f = NULL; | |
2941a2e1 | 5313 | #ifdef WIN32 |
de009b76 | 5314 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5315 | if (fd >= 0) |
5316 | f = PerlIO_fdopen(fd, "w+b"); | |
5317 | #else /* WIN32 */ | |
460c8493 | 5318 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5319 | int fd = -1; |
5320 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
5321 | const char * const tmpdir = PL_tainting ? NULL : PerlEnv_getenv("TMPDIR"); | |
525f6fe9 | 5322 | SV * sv = NULL; |
2941a2e1 JH |
5323 | /* |
5324 | * I have no idea how portable mkstemp() is ... NI-S | |
5325 | */ | |
7299ca58 | 5326 | if (tmpdir && *tmpdir) { |
0b99e986 | 5327 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5328 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5329 | sv_catpv(sv, tempname + 4); |
5330 | fd = mkstemp(SvPVX(sv)); | |
5331 | } | |
5332 | if (fd < 0) { | |
7299ca58 | 5333 | sv = NULL; |
0b99e986 RGS |
5334 | /* else we try /tmp */ |
5335 | fd = mkstemp(tempname); | |
5336 | } | |
2941a2e1 JH |
5337 | if (fd >= 0) { |
5338 | f = PerlIO_fdopen(fd, "w+"); | |
5339 | if (f) | |
5340 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5341 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5342 | } |
ef8d46e8 | 5343 | SvREFCNT_dec(sv); |
2941a2e1 | 5344 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5345 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5346 | |
085e731f CB |
5347 | if (stdio) |
5348 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5349 | ||
2941a2e1 JH |
5350 | # endif /* else HAS_MKSTEMP */ |
5351 | #endif /* else WIN32 */ | |
5352 | return f; | |
760ac839 LW |
5353 | } |
5354 | ||
6f9d8c32 NIS |
5355 | #undef HAS_FSETPOS |
5356 | #undef HAS_FGETPOS | |
5357 | ||
22569500 NIS |
5358 | #endif /* USE_SFIO */ |
5359 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5360 | |
9e353e3b | 5361 | /*======================================================================================*/ |
14a5cf38 | 5362 | /* |
71200d45 NIS |
5363 | * Now some functions in terms of above which may be needed even if we are |
5364 | * not in true PerlIO mode | |
9e353e3b | 5365 | */ |
188f0c84 YO |
5366 | const char * |
5367 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5368 | { | |
5369 | dVAR; | |
8b850bd5 NC |
5370 | const char *direction = NULL; |
5371 | SV *layers; | |
188f0c84 YO |
5372 | /* |
5373 | * Need to supply default layer info from open.pm | |
5374 | */ | |
8b850bd5 NC |
5375 | |
5376 | if (!PL_curcop) | |
5377 | return NULL; | |
5378 | ||
5379 | if (mode && mode[0] != 'r') { | |
5380 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5381 | direction = "open>"; | |
5382 | } else { | |
5383 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5384 | direction = "open<"; | |
188f0c84 | 5385 | } |
8b850bd5 NC |
5386 | if (!direction) |
5387 | return NULL; | |
5388 | ||
20439bc7 | 5389 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5390 | |
5391 | assert(layers); | |
5392 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5393 | } |
5394 | ||
9e353e3b | 5395 | |
760ac839 LW |
5396 | #ifndef HAS_FSETPOS |
5397 | #undef PerlIO_setpos | |
5398 | int | |
766a733e | 5399 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5400 | { |
14a5cf38 JH |
5401 | dTHX; |
5402 | if (SvOK(pos)) { | |
5403 | STRLEN len; | |
c4420975 | 5404 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5405 | if (f && len == sizeof(Off_t)) |
5406 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5407 | } | |
93189314 | 5408 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5409 | return -1; |
760ac839 | 5410 | } |
c411622e | 5411 | #else |
c411622e | 5412 | #undef PerlIO_setpos |
5413 | int | |
766a733e | 5414 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5415 | { |
14a5cf38 JH |
5416 | dTHX; |
5417 | if (SvOK(pos)) { | |
5418 | STRLEN len; | |
c4420975 | 5419 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5420 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5421 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5422 | return fsetpos64(f, fpos); |
d9b3e12d | 5423 | #else |
14a5cf38 | 5424 | return fsetpos(f, fpos); |
d9b3e12d | 5425 | #endif |
14a5cf38 | 5426 | } |
766a733e | 5427 | } |
93189314 | 5428 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5429 | return -1; |
c411622e | 5430 | } |
5431 | #endif | |
760ac839 LW |
5432 | |
5433 | #ifndef HAS_FGETPOS | |
5434 | #undef PerlIO_getpos | |
5435 | int | |
766a733e | 5436 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5437 | { |
14a5cf38 JH |
5438 | dTHX; |
5439 | Off_t posn = PerlIO_tell(f); | |
5440 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5441 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5442 | } |
c411622e | 5443 | #else |
c411622e | 5444 | #undef PerlIO_getpos |
5445 | int | |
766a733e | 5446 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5447 | { |
14a5cf38 JH |
5448 | dTHX; |
5449 | Fpos_t fpos; | |
5450 | int code; | |
2d4389e4 | 5451 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5452 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5453 | #else |
14a5cf38 | 5454 | code = fgetpos(f, &fpos); |
d9b3e12d | 5455 | #endif |
14a5cf38 JH |
5456 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5457 | return code; | |
c411622e | 5458 | } |
5459 | #endif | |
760ac839 LW |
5460 | |
5461 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5462 | ||
5463 | int | |
c78749f2 | 5464 | vprintf(char *pat, char *args) |
662a7e3f CS |
5465 | { |
5466 | _doprnt(pat, args, stdout); | |
22569500 | 5467 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5468 | * value */ |
662a7e3f CS |
5469 | } |
5470 | ||
5471 | int | |
c78749f2 | 5472 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5473 | { |
5474 | _doprnt(pat, args, fd); | |
22569500 | 5475 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5476 | * value */ |
760ac839 LW |
5477 | } |
5478 | ||
5479 | #endif | |
5480 | ||
5481 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5482 | int |
8ac85365 | 5483 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5484 | { |
8ff9a42b | 5485 | dTHX; |
d9fad198 | 5486 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5487 | PERL_UNUSED_CONTEXT; |
5488 | ||
1208b3dd JH |
5489 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5490 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5491 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5492 | } |
1208b3dd | 5493 | #endif |
14a5cf38 | 5494 | return val; |
760ac839 LW |
5495 | } |
5496 | #endif | |
5497 | ||
5498 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5499 | int |
14a5cf38 | 5500 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5501 | { |
14a5cf38 JH |
5502 | va_list ap; |
5503 | int result; | |
5504 | va_start(ap, fmt); | |
5505 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5506 | va_end(ap); | |
5507 | return result; | |
760ac839 LW |
5508 | } |
5509 | #endif | |
9cfa90c0 NC |
5510 | |
5511 | /* | |
5512 | * Local variables: | |
5513 | * c-indentation-style: bsd | |
5514 | * c-basic-offset: 4 | |
5515 | * indent-tabs-mode: t | |
5516 | * End: | |
5517 | * | |
37442d52 RGS |
5518 | * ex: set ts=8 sts=4 sw=4 noet: |
5519 | */ |