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(); | |
2566 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) | |
2567 | return 0; | |
2568 | /* we've just run some perl-level code that could have done | |
2569 | * anything, including closing the file or clearing this layer. | |
2570 | * If so, free any lower layers that have already been | |
2571 | * cleared, then return an error. */ | |
2572 | while (PerlIOValid(f) && | |
2573 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2574 | { | |
2575 | const PerlIOl *l = *f; | |
2576 | *f = l->next; | |
2577 | Safefree(l); | |
2578 | } | |
2579 | return 1; | |
2580 | } | |
2581 | ||
6f9d8c32 | 2582 | int |
9e353e3b | 2583 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2584 | { |
14a5cf38 | 2585 | int oflags = -1; |
3b6c1aba | 2586 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2587 | mode++; |
2588 | switch (*mode) { | |
2589 | case 'r': | |
2590 | oflags = O_RDONLY; | |
2591 | if (*++mode == '+') { | |
2592 | oflags = O_RDWR; | |
2593 | mode++; | |
2594 | } | |
2595 | break; | |
2596 | ||
2597 | case 'w': | |
2598 | oflags = O_CREAT | O_TRUNC; | |
2599 | if (*++mode == '+') { | |
2600 | oflags |= O_RDWR; | |
2601 | mode++; | |
2602 | } | |
2603 | else | |
2604 | oflags |= O_WRONLY; | |
2605 | break; | |
2606 | ||
2607 | case 'a': | |
2608 | oflags = O_CREAT | O_APPEND; | |
2609 | if (*++mode == '+') { | |
2610 | oflags |= O_RDWR; | |
2611 | mode++; | |
2612 | } | |
2613 | else | |
2614 | oflags |= O_WRONLY; | |
2615 | break; | |
2616 | } | |
2617 | if (*mode == 'b') { | |
2618 | oflags |= O_BINARY; | |
2619 | oflags &= ~O_TEXT; | |
2620 | mode++; | |
2621 | } | |
2622 | else if (*mode == 't') { | |
2623 | oflags |= O_TEXT; | |
2624 | oflags &= ~O_BINARY; | |
2625 | mode++; | |
2626 | } | |
2627 | /* | |
71200d45 | 2628 | * Always open in binary mode |
14a5cf38 JH |
2629 | */ |
2630 | oflags |= O_BINARY; | |
2631 | if (*mode || oflags == -1) { | |
93189314 | 2632 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2633 | oflags = -1; |
2634 | } | |
2635 | return oflags; | |
9e353e3b NIS |
2636 | } |
2637 | ||
2638 | IV | |
f62ce20a | 2639 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2640 | { |
96a5add6 | 2641 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2642 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2643 | } |
2644 | ||
aa063c35 NIS |
2645 | static void |
2646 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2647 | { |
de009b76 | 2648 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2649 | #if defined(WIN32) |
aa063c35 NIS |
2650 | Stat_t st; |
2651 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2652 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2653 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2654 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2655 | } | |
aa063c35 NIS |
2656 | else { |
2657 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2658 | } | |
6caa5a9c NIS |
2659 | } |
2660 | #endif | |
aa063c35 NIS |
2661 | s->fd = fd; |
2662 | s->oflags = imode; | |
2663 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2664 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2665 | } |
2666 | ||
2667 | IV | |
2668 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2669 | { | |
2670 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2671 | if (*PerlIONext(f)) { |
4b069b44 | 2672 | /* We never call down so do any pending stuff now */ |
03c0554d | 2673 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2674 | /* |
71200d45 | 2675 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2676 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2677 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2678 | */ |
acbd16bf | 2679 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2680 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2681 | } |
2682 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2683 | |
14a5cf38 | 2684 | return code; |
4b803d04 NIS |
2685 | } |
2686 | ||
c2fcde81 JH |
2687 | IV |
2688 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2689 | { | |
de009b76 | 2690 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2691 | Off_t new_loc; |
96a5add6 | 2692 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2693 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2694 | #ifdef ESPIPE | |
2695 | SETERRNO(ESPIPE, LIB_INVARG); | |
2696 | #else | |
2697 | SETERRNO(EINVAL, LIB_INVARG); | |
2698 | #endif | |
2699 | return -1; | |
2700 | } | |
0723351e NC |
2701 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2702 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2703 | return -1; |
c2fcde81 JH |
2704 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2705 | return 0; | |
2706 | } | |
2707 | ||
9e353e3b | 2708 | PerlIO * |
14a5cf38 JH |
2709 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2710 | IV n, const char *mode, int fd, int imode, | |
2711 | int perm, PerlIO *f, int narg, SV **args) | |
2712 | { | |
d9dac8cd | 2713 | if (PerlIOValid(f)) { |
cc6623a8 | 2714 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2715 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2716 | } |
2717 | if (narg > 0) { | |
3b6c1aba | 2718 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2719 | mode++; |
2720 | else { | |
2721 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2722 | #ifdef VMS |
2723 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2724 | #else | |
14a5cf38 | 2725 | perm = 0666; |
5e2ce0f3 | 2726 | #endif |
14a5cf38 JH |
2727 | } |
2728 | if (imode != -1) { | |
e62f0680 | 2729 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2730 | fd = PerlLIO_open3(path, imode, perm); |
2731 | } | |
2732 | } | |
2733 | if (fd >= 0) { | |
3b6c1aba | 2734 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2735 | mode++; |
2736 | if (!f) { | |
2737 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2738 | } |
2739 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2740 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2741 | return NULL; | |
2742 | } | |
d9dac8cd | 2743 | } |
aa063c35 | 2744 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2745 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2746 | if (*mode == IoTYPE_APPEND) |
2747 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2748 | return f; |
2749 | } | |
2750 | else { | |
2751 | if (f) { | |
6f207bd3 | 2752 | NOOP; |
14a5cf38 | 2753 | /* |
71200d45 | 2754 | * FIXME: pop layers ??? |
14a5cf38 JH |
2755 | */ |
2756 | } | |
2757 | return NULL; | |
2758 | } | |
9e353e3b NIS |
2759 | } |
2760 | ||
71200d45 | 2761 | PerlIO * |
ecdeb87c | 2762 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2763 | { |
dcda55fc | 2764 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2765 | int fd = os->fd; |
ecdeb87c NIS |
2766 | if (flags & PERLIO_DUP_FD) { |
2767 | fd = PerlLIO_dup(fd); | |
2768 | } | |
22c96fc1 | 2769 | if (fd >= 0) { |
ecdeb87c | 2770 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2771 | if (f) { |
2772 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2773 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2774 | return f; |
2775 | } | |
71200d45 NIS |
2776 | } |
2777 | return NULL; | |
2778 | } | |
2779 | ||
2780 | ||
9e353e3b | 2781 | SSize_t |
f62ce20a | 2782 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2783 | { |
97aff369 | 2784 | dVAR; |
abf9167d DM |
2785 | int fd; |
2786 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2787 | return -1; | |
2788 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2789 | #ifdef PERLIO_STD_SPECIAL |
2790 | if (fd == 0) | |
2791 | return PERLIO_STD_IN(fd, vbuf, count); | |
2792 | #endif | |
81428673 | 2793 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2794 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2795 | return 0; |
1fd8f4ce | 2796 | } |
14a5cf38 | 2797 | while (1) { |
b464bac0 | 2798 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2799 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2800 | if (len < 0) { |
2801 | if (errno != EAGAIN) { | |
2802 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2803 | } | |
2804 | } | |
2805 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2806 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2807 | SETERRNO(0,0); |
2808 | } | |
14a5cf38 JH |
2809 | return len; |
2810 | } | |
abf9167d DM |
2811 | /* EINTR */ |
2812 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2813 | return -1; | |
14a5cf38 | 2814 | } |
b464bac0 | 2815 | /*NOTREACHED*/ |
9e353e3b NIS |
2816 | } |
2817 | ||
2818 | SSize_t | |
f62ce20a | 2819 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2820 | { |
97aff369 | 2821 | dVAR; |
abf9167d DM |
2822 | int fd; |
2823 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2824 | return -1; | |
2825 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2826 | #ifdef PERLIO_STD_SPECIAL |
2827 | if (fd == 1 || fd == 2) | |
2828 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2829 | #endif | |
14a5cf38 | 2830 | while (1) { |
de009b76 | 2831 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2832 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2833 | if (len < 0) { |
2834 | if (errno != EAGAIN) { | |
2835 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2836 | } | |
2837 | } | |
14a5cf38 JH |
2838 | return len; |
2839 | } | |
abf9167d DM |
2840 | /* EINTR */ |
2841 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2842 | return -1; | |
06da4f11 | 2843 | } |
1b6737cc | 2844 | /*NOTREACHED*/ |
9e353e3b NIS |
2845 | } |
2846 | ||
9e353e3b | 2847 | Off_t |
f62ce20a | 2848 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2849 | { |
96a5add6 AL |
2850 | PERL_UNUSED_CONTEXT; |
2851 | ||
14a5cf38 | 2852 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2853 | } |
2854 | ||
2556f95e GF |
2855 | |
2856 | IV | |
2376d97d | 2857 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2858 | { |
97aff369 | 2859 | dVAR; |
de009b76 | 2860 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2861 | int code = 0; |
168d5872 NIS |
2862 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2863 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2864 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2865 | return 0; | |
22569500 | 2866 | } |
93a8090d NIS |
2867 | } |
2868 | else { | |
93189314 | 2869 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2870 | return -1; |
2871 | } | |
14a5cf38 JH |
2872 | while (PerlLIO_close(fd) != 0) { |
2873 | if (errno != EINTR) { | |
2874 | code = -1; | |
2875 | break; | |
2876 | } | |
abf9167d DM |
2877 | /* EINTR */ |
2878 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2879 | return -1; | |
14a5cf38 JH |
2880 | } |
2881 | if (code == 0) { | |
2882 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2883 | } | |
2884 | return code; | |
9e353e3b NIS |
2885 | } |
2886 | ||
27da23d5 | 2887 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2888 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2889 | "unix", |
2890 | sizeof(PerlIOUnix), | |
2891 | PERLIO_K_RAW, | |
2892 | PerlIOUnix_pushed, | |
2376d97d | 2893 | PerlIOBase_popped, |
14a5cf38 | 2894 | PerlIOUnix_open, |
86e05cf2 | 2895 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2896 | NULL, |
2897 | PerlIOUnix_fileno, | |
71200d45 | 2898 | PerlIOUnix_dup, |
14a5cf38 JH |
2899 | PerlIOUnix_read, |
2900 | PerlIOBase_unread, | |
2901 | PerlIOUnix_write, | |
2902 | PerlIOUnix_seek, | |
2903 | PerlIOUnix_tell, | |
2904 | PerlIOUnix_close, | |
22569500 NIS |
2905 | PerlIOBase_noop_ok, /* flush */ |
2906 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2907 | PerlIOBase_eof, |
2908 | PerlIOBase_error, | |
2909 | PerlIOBase_clearerr, | |
2910 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2911 | NULL, /* get_base */ |
2912 | NULL, /* get_bufsiz */ | |
2913 | NULL, /* get_ptr */ | |
2914 | NULL, /* get_cnt */ | |
2915 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2916 | }; |
2917 | ||
2918 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2919 | /* |
71200d45 | 2920 | * stdio as a layer |
14a5cf38 | 2921 | */ |
9e353e3b | 2922 | |
313e59c8 NIS |
2923 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2924 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2925 | broken by the last second glibc 2.3 fix | |
2926 | */ | |
2927 | #define STDIO_BUFFER_WRITABLE | |
2928 | #endif | |
2929 | ||
2930 | ||
14a5cf38 JH |
2931 | typedef struct { |
2932 | struct _PerlIO base; | |
22569500 | 2933 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2934 | } PerlIOStdio; |
2935 | ||
2936 | IV | |
f62ce20a | 2937 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2938 | { |
96a5add6 AL |
2939 | PERL_UNUSED_CONTEXT; |
2940 | ||
c4420975 AL |
2941 | if (PerlIOValid(f)) { |
2942 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2943 | if (s) | |
2944 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2945 | } |
2946 | errno = EBADF; | |
2947 | return -1; | |
9e353e3b NIS |
2948 | } |
2949 | ||
766a733e | 2950 | char * |
14a5cf38 JH |
2951 | PerlIOStdio_mode(const char *mode, char *tmode) |
2952 | { | |
de009b76 | 2953 | char * const ret = tmode; |
a0625d38 SR |
2954 | if (mode) { |
2955 | while (*mode) { | |
2956 | *tmode++ = *mode++; | |
2957 | } | |
14a5cf38 | 2958 | } |
95005ad8 | 2959 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2960 | *tmode++ = 'b'; |
2961 | #endif | |
14a5cf38 JH |
2962 | *tmode = '\0'; |
2963 | return ret; | |
2964 | } | |
2965 | ||
4b803d04 | 2966 | IV |
2dc2558e | 2967 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2968 | { |
1fd8f4ce NIS |
2969 | PerlIO *n; |
2970 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2971 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2972 | if (toptab == tab) { |
2973 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2974 | PerlIO_pop(aTHX_ f); | |
2975 | return 0; | |
2976 | } else { | |
de009b76 | 2977 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2978 | char tmode[8]; |
2979 | FILE *stdio; | |
81428673 | 2980 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2981 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2982 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2983 | /* We never call down so do any pending stuff now */ | |
2984 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2985 | } |
1fd8f4ce NIS |
2986 | else { |
2987 | return -1; | |
2988 | } | |
2989 | } | |
14a5cf38 | 2990 | } |
2dc2558e | 2991 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2992 | } |
2993 | ||
22569500 | 2994 | |
9e353e3b | 2995 | PerlIO * |
4b069b44 | 2996 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2997 | { |
14a5cf38 JH |
2998 | dTHX; |
2999 | PerlIO *f = NULL; | |
3000 | if (stdio) { | |
22569500 | 3001 | PerlIOStdio *s; |
4b069b44 NIS |
3002 | if (!mode || !*mode) { |
3003 | /* We need to probe to see how we can open the stream | |
3004 | so start with read/write and then try write and read | |
3005 | we dup() so that we can fclose without loosing the fd. | |
3006 | ||
3007 | Note that the errno value set by a failing fdopen | |
3008 | varies between stdio implementations. | |
3009 | */ | |
de009b76 | 3010 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 3011 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 3012 | if (!f2) { |
a33cf58c | 3013 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
3014 | } |
3015 | if (!f2) { | |
a33cf58c | 3016 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
3017 | } |
3018 | if (!f2) { | |
3019 | /* Don't seem to be able to open */ | |
3020 | PerlLIO_close(fd); | |
3021 | return f; | |
3022 | } | |
3023 | fclose(f2); | |
22569500 | 3024 | } |
a0714e2c | 3025 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
3026 | s = PerlIOSelf(f, PerlIOStdio); |
3027 | s->stdio = stdio; | |
c586124f | 3028 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 3029 | } |
14a5cf38 JH |
3030 | } |
3031 | return f; | |
9e353e3b NIS |
3032 | } |
3033 | ||
3034 | PerlIO * | |
14a5cf38 JH |
3035 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3036 | IV n, const char *mode, int fd, int imode, | |
3037 | int perm, PerlIO *f, int narg, SV **args) | |
3038 | { | |
3039 | char tmode[8]; | |
d9dac8cd | 3040 | if (PerlIOValid(f)) { |
dcda55fc AL |
3041 | const char * const path = SvPV_nolen_const(*args); |
3042 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
3043 | FILE *stdio; |
3044 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
3045 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
3046 | s->stdio); |
3047 | if (!s->stdio) | |
3048 | return NULL; | |
3049 | s->stdio = stdio; | |
1751d015 | 3050 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3051 | return f; |
3052 | } | |
3053 | else { | |
3054 | if (narg > 0) { | |
dcda55fc | 3055 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 3056 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3057 | mode++; |
3058 | fd = PerlLIO_open3(path, imode, perm); | |
3059 | } | |
3060 | else { | |
95005ad8 GH |
3061 | FILE *stdio; |
3062 | bool appended = FALSE; | |
3063 | #ifdef __CYGWIN__ | |
3064 | /* Cygwin wants its 'b' early. */ | |
3065 | appended = TRUE; | |
3066 | mode = PerlIOStdio_mode(mode, tmode); | |
3067 | #endif | |
3068 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3069 | if (stdio) { |
6f0313ac JH |
3070 | if (!f) { |
3071 | f = PerlIO_allocate(aTHX); | |
3072 | } | |
95005ad8 GH |
3073 | if (!appended) |
3074 | mode = PerlIOStdio_mode(mode, tmode); | |
3075 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3076 | if (f) { | |
0f0f9e2b JH |
3077 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3078 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3079 | } else { | |
3080 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3081 | } |
3082 | return f; | |
3083 | } | |
3084 | else { | |
3085 | return NULL; | |
3086 | } | |
14a5cf38 JH |
3087 | } |
3088 | } | |
3089 | if (fd >= 0) { | |
3090 | FILE *stdio = NULL; | |
3091 | int init = 0; | |
3b6c1aba | 3092 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3093 | init = 1; |
3094 | mode++; | |
3095 | } | |
3096 | if (init) { | |
3097 | switch (fd) { | |
3098 | case 0: | |
3099 | stdio = PerlSIO_stdin; | |
3100 | break; | |
3101 | case 1: | |
3102 | stdio = PerlSIO_stdout; | |
3103 | break; | |
3104 | case 2: | |
3105 | stdio = PerlSIO_stderr; | |
3106 | break; | |
3107 | } | |
3108 | } | |
3109 | else { | |
3110 | stdio = PerlSIO_fdopen(fd, mode = | |
3111 | PerlIOStdio_mode(mode, tmode)); | |
3112 | } | |
3113 | if (stdio) { | |
d9dac8cd NIS |
3114 | if (!f) { |
3115 | f = PerlIO_allocate(aTHX); | |
3116 | } | |
a33cf58c | 3117 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3118 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3119 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3120 | } |
14a5cf38 JH |
3121 | return f; |
3122 | } | |
3123 | } | |
3124 | } | |
ee518936 | 3125 | return NULL; |
9e353e3b NIS |
3126 | } |
3127 | ||
1751d015 | 3128 | PerlIO * |
ecdeb87c | 3129 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3130 | { |
3131 | /* This assumes no layers underneath - which is what | |
3132 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3133 | */ | |
ecdeb87c | 3134 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3135 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3136 | const int fd = fileno(stdio); |
9217ff3f | 3137 | char mode[8]; |
ecdeb87c | 3138 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3139 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3140 | if (dfd >= 0) { |
3141 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3142 | goto set_this; | |
ecdeb87c NIS |
3143 | } |
3144 | else { | |
6f207bd3 | 3145 | NOOP; |
ecdeb87c NIS |
3146 | /* FIXME: To avoid messy error recovery if dup fails |
3147 | re-use the existing stdio as though flag was not set | |
3148 | */ | |
3149 | } | |
3150 | } | |
9217ff3f NIS |
3151 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3152 | set_this: | |
694c95cf | 3153 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3154 | if(stdio) { |
3155 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3156 | } | |
1751d015 NIS |
3157 | } |
3158 | return f; | |
3159 | } | |
3160 | ||
0d7a5398 NIS |
3161 | static int |
3162 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3163 | { | |
96a5add6 AL |
3164 | PERL_UNUSED_CONTEXT; |
3165 | ||
0d7a5398 | 3166 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3167 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3168 | */ |
ef8eacb8 AT |
3169 | # if defined(__UCLIBC__) |
3170 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3171 | f->__filedes = -1; | |
3172 | return 1; | |
3173 | # elif defined(__GLIBC__) | |
0d7a5398 | 3174 | /* There may be a better way for GLIBC: |
37725cdc | 3175 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3176 | */ |
3177 | f->_fileno = -1; | |
3178 | return 1; | |
3179 | # elif defined(__sun__) | |
f5992bc4 | 3180 | PERL_UNUSED_ARG(f); |
cfedb851 | 3181 | return 0; |
0d7a5398 NIS |
3182 | # elif defined(__hpux) |
3183 | f->__fileH = 0xff; | |
3184 | f->__fileL = 0xff; | |
3185 | return 1; | |
9837d373 | 3186 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3187 | your platform does not have special entry try this one. |
9837d373 NIS |
3188 | [For OSF only have confirmation for Tru64 (alpha) |
3189 | but assume other OSFs will be similar.] | |
37725cdc | 3190 | */ |
9837d373 | 3191 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3192 | f->_file = -1; |
3193 | return 1; | |
3194 | # elif defined(__FreeBSD__) | |
3195 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3196 | - we could insert a dummy func in the _close function entry |
3197 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3198 | */ |
3199 | f->_file = -1; | |
0c49ea6a SU |
3200 | return 1; |
3201 | # elif defined(__OpenBSD__) | |
3202 | /* There may be a better way on OpenBSD: | |
3203 | - we could insert a dummy func in the _close function entry | |
3204 | f->_close = (int (*)(void *)) dummy_close; | |
3205 | */ | |
3206 | f->_file = -1; | |
0d7a5398 | 3207 | return 1; |
59ad941d IZ |
3208 | # elif defined(__EMX__) |
3209 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3210 | f->_handle = -1; | |
3211 | return 1; | |
0d7a5398 NIS |
3212 | # elif defined(__CYGWIN__) |
3213 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3214 | - we could insert a dummy func in the _close function entry |
3215 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3216 | */ |
3217 | f->_file = -1; | |
3218 | return 1; | |
3219 | # elif defined(WIN32) | |
378eeda7 | 3220 | # if defined(UNDER_CE) |
b475b3e6 JH |
3221 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3222 | structure at all | |
3223 | */ | |
0d7a5398 NIS |
3224 | # else |
3225 | f->_file = -1; | |
3226 | # endif | |
3227 | return 1; | |
3228 | # else | |
3229 | #if 0 | |
37725cdc | 3230 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3231 | (which isn't thread safe) instead |
37725cdc | 3232 | */ |
0d7a5398 NIS |
3233 | # error "Don't know how to set FILE.fileno on your platform" |
3234 | #endif | |
8772537c | 3235 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3236 | return 0; |
3237 | # endif | |
3238 | } | |
3239 | ||
1751d015 | 3240 | IV |
f62ce20a | 3241 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3242 | { |
c4420975 | 3243 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3244 | if (!stdio) { |
3245 | errno = EBADF; | |
3246 | return -1; | |
3247 | } | |
9217ff3f | 3248 | else { |
de009b76 | 3249 | const int fd = fileno(stdio); |
0d7a5398 | 3250 | int invalidate = 0; |
bbfd922f | 3251 | IV result = 0; |
1d791a44 | 3252 | int dupfd = -1; |
4ee39169 | 3253 | dSAVEDERRNO; |
a2e578da MHM |
3254 | #ifdef USE_ITHREADS |
3255 | dVAR; | |
3256 | #endif | |
0d7a5398 | 3257 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3258 | /* Socks lib overrides close() but stdio isn't linked to |
3259 | that library (though we are) - so we must call close() | |
3260 | on sockets on stdio's behalf. | |
3261 | */ | |
0d7a5398 NIS |
3262 | int optval; |
3263 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3264 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3265 | invalidate = 1; |
0d7a5398 | 3266 | #endif |
d8723f43 NC |
3267 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3268 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3269 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3270 | trying to close an already closed handle which somehow it still has | |
3271 | a reference to. (via.xs, I'm looking at you). */ | |
3272 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3273 | /* File descriptor still in use */ | |
0d7a5398 | 3274 | invalidate = 1; |
d8723f43 | 3275 | } |
0d7a5398 | 3276 | if (invalidate) { |
6b4ce6c8 AL |
3277 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3278 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3279 | return 0; | |
3280 | if (stdio == stdout || stdio == stderr) | |
3281 | return PerlIO_flush(f); | |
37725cdc NIS |
3282 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3283 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3284 | fileno slot of the FILE * | |
3285 | */ | |
bbfd922f | 3286 | result = PerlIO_flush(f); |
4ee39169 | 3287 | SAVE_ERRNO; |
6b4ce6c8 | 3288 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3289 | if (!invalidate) { |
9bab90c0 NC |
3290 | #ifdef USE_ITHREADS |
3291 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3292 | /* Right. We need a mutex here because for a brief while we |
3293 | will have the situation that fd is actually closed. Hence if | |
3294 | a second thread were to get into this block, its dup() would | |
3295 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3296 | Then if we get to the dup2() first, we blat the fd back |
3297 | (messing up its temporary as a side effect) only for it to | |
3298 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3299 | ||
3300 | /* There is, of course, a race condition, that any other thread | |
3301 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3302 | for the duration of this little manoeuvrer. Perhaps we |
3303 | should hold an IO mutex for the duration of every IO | |
3304 | operation if we know that invalidate doesn't work on this | |
3305 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3306 | |
3307 | Except that correctness trumps speed. | |
3308 | Advice from klortho #11912. */ | |
3309 | #endif | |
6b4ce6c8 | 3310 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3311 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3312 | if (dupfd < 0) { |
3313 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3314 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3315 | recover from here, or if closing this particular FILE * | |
3316 | is a good idea now. */ | |
3317 | } | |
3318 | #endif | |
3319 | } | |
94ccb807 JH |
3320 | } else { |
3321 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3322 | } |
0d7a5398 | 3323 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3324 | /* We treat error from stdio as success if we invalidated |
3325 | errno may NOT be expected EBADF | |
e8529473 NIS |
3326 | */ |
3327 | if (invalidate && result != 0) { | |
4ee39169 | 3328 | RESTORE_ERRNO; |
0d7a5398 | 3329 | result = 0; |
37725cdc | 3330 | } |
6b4ce6c8 AL |
3331 | #ifdef SOCKS5_VERSION_NAME |
3332 | /* in SOCKS' case, let close() determine return value */ | |
3333 | result = close(fd); | |
3334 | #endif | |
1d791a44 | 3335 | if (dupfd >= 0) { |
0d7a5398 | 3336 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3337 | PerlLIO_close(dupfd); |
711e8db2 | 3338 | #ifdef USE_ITHREADS |
9bab90c0 | 3339 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3340 | #endif |
9217ff3f NIS |
3341 | } |
3342 | return result; | |
37725cdc | 3343 | } |
1751d015 NIS |
3344 | } |
3345 | ||
9e353e3b | 3346 | SSize_t |
f62ce20a | 3347 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3348 | { |
97aff369 | 3349 | dVAR; |
abf9167d | 3350 | FILE * s; |
14a5cf38 | 3351 | SSize_t got = 0; |
abf9167d DM |
3352 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3353 | return -1; | |
3354 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3355 | for (;;) { |
3356 | if (count == 1) { | |
3357 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3358 | /* | |
3359 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3360 | * stdio does not do that for fread() | |
3361 | */ | |
de009b76 | 3362 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3363 | if (ch != EOF) { |
3364 | *buf = ch; | |
3365 | got = 1; | |
3366 | } | |
14a5cf38 | 3367 | } |
4d948241 NIS |
3368 | else |
3369 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3370 | if (got == 0 && PerlSIO_ferror(s)) |
3371 | got = -1; | |
42a7a32f | 3372 | if (got >= 0 || errno != EINTR) |
4d948241 | 3373 | break; |
abf9167d DM |
3374 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3375 | return -1; | |
42a7a32f | 3376 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3377 | } |
14a5cf38 | 3378 | return got; |
9e353e3b NIS |
3379 | } |
3380 | ||
3381 | SSize_t | |
f62ce20a | 3382 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3383 | { |
14a5cf38 | 3384 | SSize_t unread = 0; |
c4420975 | 3385 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3386 | |
313e59c8 | 3387 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3388 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3389 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3390 | STDCHAR *base = PerlIO_get_base(f); | |
3391 | SSize_t cnt = PerlIO_get_cnt(f); | |
3392 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3393 | SSize_t avail = ptr - base; | |
3394 | if (avail > 0) { | |
3395 | if (avail > count) { | |
3396 | avail = count; | |
3397 | } | |
3398 | ptr -= avail; | |
3399 | Move(buf-avail,ptr,avail,STDCHAR); | |
3400 | count -= avail; | |
3401 | unread += avail; | |
3402 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3403 | if (PerlSIO_feof(s) && unread >= 0) |
3404 | PerlSIO_clearerr(s); | |
3405 | } | |
3406 | } | |
313e59c8 NIS |
3407 | else |
3408 | #endif | |
3409 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3410 | /* We can get pointer to buffer but not its base |
3411 | Do ungetc() but check chars are ending up in the | |
3412 | buffer | |
3413 | */ | |
3414 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3415 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3416 | while (count > 0) { | |
de009b76 | 3417 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3418 | if (ungetc(ch,s) != ch) { |
3419 | /* ungetc did not work */ | |
3420 | break; | |
3421 | } | |
3422 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3423 | /* Did not change pointer as expected */ | |
3424 | fgetc(s); /* get char back again */ | |
3425 | break; | |
3426 | } | |
3427 | /* It worked ! */ | |
3428 | count--; | |
3429 | unread++; | |
93679785 NIS |
3430 | } |
3431 | } | |
3432 | ||
3433 | if (count > 0) { | |
3434 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3435 | } |
3436 | return unread; | |
9e353e3b NIS |
3437 | } |
3438 | ||
3439 | SSize_t | |
f62ce20a | 3440 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3441 | { |
97aff369 | 3442 | dVAR; |
4d948241 | 3443 | SSize_t got; |
abf9167d DM |
3444 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3445 | return -1; | |
4d948241 NIS |
3446 | for (;;) { |
3447 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3448 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3449 | if (got >= 0 || errno != EINTR) |
4d948241 | 3450 | break; |
abf9167d DM |
3451 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3452 | return -1; | |
42a7a32f | 3453 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3454 | } |
3455 | return got; | |
9e353e3b NIS |
3456 | } |
3457 | ||
94a175e1 | 3458 | IV |
f62ce20a | 3459 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3460 | { |
c4420975 | 3461 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3462 | PERL_UNUSED_CONTEXT; |
3463 | ||
94a175e1 | 3464 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3465 | } |
3466 | ||
3467 | Off_t | |
f62ce20a | 3468 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3469 | { |
c4420975 | 3470 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3471 | PERL_UNUSED_CONTEXT; |
3472 | ||
94a175e1 | 3473 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3474 | } |
3475 | ||
3476 | IV | |
f62ce20a | 3477 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3478 | { |
c4420975 | 3479 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3480 | PERL_UNUSED_CONTEXT; |
3481 | ||
14a5cf38 JH |
3482 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3483 | return PerlSIO_fflush(stdio); | |
3484 | } | |
3485 | else { | |
6f207bd3 | 3486 | NOOP; |
88b61e10 | 3487 | #if 0 |
14a5cf38 JH |
3488 | /* |
3489 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3490 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3491 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3492 | * layer read-to-read |
14a5cf38 JH |
3493 | */ |
3494 | /* | |
71200d45 | 3495 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3496 | */ |
4ee39169 | 3497 | dSAVE_ERRNO; |
14a5cf38 | 3498 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3499 | RESTORE_ERRNO; |
88b61e10 | 3500 | #endif |
14a5cf38 JH |
3501 | } |
3502 | return 0; | |
9e353e3b NIS |
3503 | } |
3504 | ||
3505 | IV | |
f62ce20a | 3506 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3507 | { |
96a5add6 AL |
3508 | PERL_UNUSED_CONTEXT; |
3509 | ||
14a5cf38 | 3510 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3511 | } |
3512 | ||
3513 | IV | |
f62ce20a | 3514 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3515 | { |
96a5add6 AL |
3516 | PERL_UNUSED_CONTEXT; |
3517 | ||
263df5f1 | 3518 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3519 | } |
3520 | ||
3521 | void | |
f62ce20a | 3522 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3523 | { |
96a5add6 AL |
3524 | PERL_UNUSED_CONTEXT; |
3525 | ||
14a5cf38 | 3526 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3527 | } |
3528 | ||
3529 | void | |
f62ce20a | 3530 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3531 | { |
96a5add6 AL |
3532 | PERL_UNUSED_CONTEXT; |
3533 | ||
9e353e3b | 3534 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3535 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3536 | #else |
bd61b366 | 3537 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3538 | #endif |
3539 | } | |
3540 | ||
3541 | #ifdef FILE_base | |
3542 | STDCHAR * | |
f62ce20a | 3543 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3544 | { |
c4420975 | 3545 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3546 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3547 | } |
3548 | ||
3549 | Size_t | |
f62ce20a | 3550 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3551 | { |
c4420975 | 3552 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3553 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3554 | } |
3555 | #endif | |
3556 | ||
3557 | #ifdef USE_STDIO_PTR | |
3558 | STDCHAR * | |
f62ce20a | 3559 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3560 | { |
c4420975 | 3561 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3562 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3563 | } |
3564 | ||
3565 | SSize_t | |
f62ce20a | 3566 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3567 | { |
c4420975 | 3568 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3569 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3570 | } |
3571 | ||
3572 | void | |
f62ce20a | 3573 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3574 | { |
c4420975 | 3575 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3576 | if (ptr != NULL) { |
9e353e3b | 3577 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3578 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3579 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3580 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3581 | #endif |
3582 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3583 | /* |
71200d45 | 3584 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3585 | */ |
3586 | return; | |
9e353e3b | 3587 | #endif |
22569500 | 3588 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3589 | PerlProc_abort(); |
22569500 | 3590 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3591 | } |
3592 | /* | |
71200d45 | 3593 | * Now (or only) set cnt |
14a5cf38 | 3594 | */ |
9e353e3b | 3595 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3596 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3597 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3598 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3599 | PerlSIO_set_ptr(stdio, |
3600 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3601 | cnt)); | |
22569500 | 3602 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3603 | PerlProc_abort(); |
22569500 NIS |
3604 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3605 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3606 | } |
3607 | ||
93679785 | 3608 | |
9e353e3b NIS |
3609 | #endif |
3610 | ||
93679785 NIS |
3611 | IV |
3612 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3613 | { | |
abf9167d | 3614 | FILE * stdio; |
93679785 | 3615 | int c; |
96a5add6 | 3616 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3617 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3618 | return -1; | |
3619 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3620 | |
93679785 NIS |
3621 | /* |
3622 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3623 | */ | |
3624 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3625 | if (PerlSIO_fflush(stdio) != 0) | |
3626 | return EOF; | |
3627 | } | |
f3be3723 BL |
3628 | for (;;) { |
3629 | c = PerlSIO_fgetc(stdio); | |
3630 | if (c != EOF) | |
3631 | break; | |
3632 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3633 | return EOF; | |
abf9167d DM |
3634 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3635 | return -1; | |
f3be3723 BL |
3636 | SETERRNO(0,0); |
3637 | } | |
93679785 NIS |
3638 | |
3639 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3640 | |
3641 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3642 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3643 | /* Fake ungetc() to the real buffer in case system's ungetc |
3644 | goes elsewhere | |
3645 | */ | |
3646 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3647 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3648 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3649 | if (ptr == base+1) { | |
3650 | *--ptr = (STDCHAR) c; | |
3651 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3652 | if (PerlSIO_feof(stdio)) | |
3653 | PerlSIO_clearerr(stdio); | |
3654 | return 0; | |
3655 | } | |
3656 | } | |
313e59c8 NIS |
3657 | else |
3658 | #endif | |
3659 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3660 | STDCHAR ch = c; |
3661 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3662 | return 0; | |
3663 | } | |
3664 | } | |
93679785 NIS |
3665 | #endif |
3666 | ||
3667 | #if defined(VMS) | |
3668 | /* An ungetc()d char is handled separately from the regular | |
3669 | * buffer, so we stuff it in the buffer ourselves. | |
3670 | * Should never get called as should hit code above | |
3671 | */ | |
bad9695d NIS |
3672 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3673 | (*stdio)->_cnt++; | |
93679785 NIS |
3674 | #else |
3675 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3676 | using ungetc(). |
93679785 NIS |
3677 | */ |
3678 | if (PerlSIO_ungetc(c, stdio) != c) | |
3679 | return EOF; | |
3680 | #endif | |
3681 | return 0; | |
3682 | } | |
3683 | ||
3684 | ||
3685 | ||
27da23d5 | 3686 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3687 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3688 | "stdio", |
3689 | sizeof(PerlIOStdio), | |
86e05cf2 | 3690 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3691 | PerlIOStdio_pushed, |
2376d97d | 3692 | PerlIOBase_popped, |
14a5cf38 | 3693 | PerlIOStdio_open, |
86e05cf2 | 3694 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3695 | NULL, |
3696 | PerlIOStdio_fileno, | |
71200d45 | 3697 | PerlIOStdio_dup, |
14a5cf38 JH |
3698 | PerlIOStdio_read, |
3699 | PerlIOStdio_unread, | |
3700 | PerlIOStdio_write, | |
3701 | PerlIOStdio_seek, | |
3702 | PerlIOStdio_tell, | |
3703 | PerlIOStdio_close, | |
3704 | PerlIOStdio_flush, | |
3705 | PerlIOStdio_fill, | |
3706 | PerlIOStdio_eof, | |
3707 | PerlIOStdio_error, | |
3708 | PerlIOStdio_clearerr, | |
3709 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3710 | #ifdef FILE_base |
14a5cf38 JH |
3711 | PerlIOStdio_get_base, |
3712 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3713 | #else |
14a5cf38 JH |
3714 | NULL, |
3715 | NULL, | |
9e353e3b NIS |
3716 | #endif |
3717 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3718 | PerlIOStdio_get_ptr, |
3719 | PerlIOStdio_get_cnt, | |
15b61c98 | 3720 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3721 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3722 | # else |
3723 | NULL, | |
3724 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3725 | #else | |
3726 | NULL, | |
14a5cf38 JH |
3727 | NULL, |
3728 | NULL, | |
15b61c98 | 3729 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3730 | }; |
3731 | ||
b9d6bf13 JH |
3732 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3733 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3734 | FILE * |
81428673 | 3735 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3736 | { |
e87a358a | 3737 | dTHX; |
81428673 NIS |
3738 | FILE *stdio = NULL; |
3739 | if (PerlIOValid(f)) { | |
3740 | char buf[8]; | |
3741 | PerlIO_flush(f); | |
3742 | if (!mode || !*mode) { | |
3743 | mode = PerlIO_modestr(f, buf); | |
3744 | } | |
3745 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3746 | if (stdio) { | |
3747 | PerlIOl *l = *f; | |
9f75cc58 | 3748 | PerlIO *f2; |
81428673 NIS |
3749 | /* De-link any lower layers so new :stdio sticks */ |
3750 | *f = NULL; | |
a0714e2c | 3751 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3752 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3753 | s->stdio = stdio; |
6b54a403 | 3754 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3755 | /* Link previous lower layers under new one */ |
3756 | *PerlIONext(f) = l; | |
3757 | } | |
3758 | else { | |
3759 | /* restore layers list */ | |
3760 | *f = l; | |
3761 | } | |
a33cf58c | 3762 | } |
14a5cf38 JH |
3763 | } |
3764 | return stdio; | |
9e353e3b NIS |
3765 | } |
3766 | ||
81428673 | 3767 | |
9e353e3b NIS |
3768 | FILE * |
3769 | PerlIO_findFILE(PerlIO *f) | |
3770 | { | |
14a5cf38 | 3771 | PerlIOl *l = *f; |
bbbc33d0 | 3772 | FILE *stdio; |
14a5cf38 JH |
3773 | while (l) { |
3774 | if (l->tab == &PerlIO_stdio) { | |
3775 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3776 | return s->stdio; | |
3777 | } | |
3778 | l = *PerlIONext(&l); | |
f7e7eb72 | 3779 | } |
4b069b44 | 3780 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3781 | /* However, we're not really exporting a FILE * to someone else (who |
3782 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3783 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3784 | descriptor. We have to do this, because if the loop above returns you |
3785 | the FILE *, then *it* didn't increase any reference count. So there's | |
3786 | only one way to be consistent. */ | |
3787 | stdio = PerlIO_exportFILE(f, NULL); | |
3788 | if (stdio) { | |
3789 | const int fd = fileno(stdio); | |
3790 | if (fd >= 0) | |
3791 | PerlIOUnix_refcnt_dec(fd); | |
3792 | } | |
3793 | return stdio; | |
9e353e3b NIS |
3794 | } |
3795 | ||
b9d6bf13 | 3796 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3797 | void |
3798 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3799 | { | |
27da23d5 | 3800 | dVAR; |
22569500 NIS |
3801 | PerlIOl *l; |
3802 | while ((l = *p)) { | |
3803 | if (l->tab == &PerlIO_stdio) { | |
3804 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3805 | if (s->stdio == f) { | |
3806 | dTHX; | |
6b54a403 NC |
3807 | const int fd = fileno(f); |
3808 | if (fd >= 0) | |
3809 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3810 | PerlIO_pop(aTHX_ p); |
3811 | return; | |
3812 | } | |
3813 | } | |
3814 | p = PerlIONext(p); | |
3815 | } | |
3816 | return; | |
9e353e3b NIS |
3817 | } |
3818 | ||
3819 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3820 | /* |
71200d45 | 3821 | * perlio buffer layer |
14a5cf38 | 3822 | */ |
9e353e3b | 3823 | |
5e2ab84b | 3824 | IV |
2dc2558e | 3825 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3826 | { |
14a5cf38 | 3827 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3828 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3829 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3830 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3831 | } | |
4b069b44 | 3832 | if (*PerlIONext(f)) { |
de009b76 | 3833 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3834 | if (posn != (Off_t) - 1) { |
3835 | b->posn = posn; | |
3836 | } | |
14a5cf38 | 3837 | } |
2dc2558e | 3838 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3839 | } |
3840 | ||
9e353e3b | 3841 | PerlIO * |
14a5cf38 JH |
3842 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3843 | IV n, const char *mode, int fd, int imode, int perm, | |
3844 | PerlIO *f, int narg, SV **args) | |
3845 | { | |
04892f78 | 3846 | if (PerlIOValid(f)) { |
14a5cf38 | 3847 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3848 | PerlIO_funcs *tab = |
3849 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3850 | if (tab && tab->Open) | |
3851 | next = | |
3852 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3853 | next, narg, args); | |
2dc2558e | 3854 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3855 | return NULL; |
3856 | } | |
3857 | } | |
3858 | else { | |
04892f78 | 3859 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3860 | int init = 0; |
3b6c1aba | 3861 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3862 | init = 1; |
3863 | /* | |
71200d45 | 3864 | * mode++; |
14a5cf38 JH |
3865 | */ |
3866 | } | |
67363c0d JH |
3867 | if (tab && tab->Open) |
3868 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3869 | f, narg, args); | |
3870 | else | |
3871 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3872 | if (f) { |
22569500 | 3873 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3874 | /* |
3875 | * if push fails during open, open fails. close will pop us. | |
3876 | */ | |
3877 | PerlIO_close (f); | |
3878 | return NULL; | |
3879 | } else { | |
3880 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3881 | if (init && fd == 2) { |
3882 | /* | |
3883 | * Initial stderr is unbuffered | |
3884 | */ | |
3885 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3886 | } | |
23b84778 IZ |
3887 | #ifdef PERLIO_USING_CRLF |
3888 | # ifdef PERLIO_IS_BINMODE_FD | |
3889 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3890 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3891 | else |
3892 | # endif | |
3893 | /* | |
3894 | * do something about failing setmode()? --jhi | |
3895 | */ | |
3896 | PerlLIO_setmode(fd, O_BINARY); | |
3897 | #endif | |
8c8488cd CB |
3898 | #ifdef VMS |
3899 | #include <rms.h> | |
3900 | /* Enable line buffering with record-oriented regular files | |
3901 | * so we don't introduce an extraneous record boundary when | |
3902 | * the buffer fills up. | |
3903 | */ | |
3904 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3905 | Stat_t st; | |
3906 | if (PerlLIO_fstat(fd, &st) == 0 | |
3907 | && S_ISREG(st.st_mode) | |
3908 | && (st.st_fab_rfm == FAB$C_VAR | |
3909 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3910 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3911 | } | |
3912 | } | |
3913 | #endif | |
14a5cf38 JH |
3914 | } |
3915 | } | |
ee518936 | 3916 | } |
14a5cf38 | 3917 | return f; |
9e353e3b NIS |
3918 | } |
3919 | ||
14a5cf38 JH |
3920 | /* |
3921 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3922 | * read or write state. For write state, we put the postponed data through |
3923 | * the next layers. For read state, we seek() the next layers to the | |
3924 | * offset given by current position in the buffer, and discard the buffer | |
3925 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3926 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3927 | */ |
9e353e3b | 3928 | IV |
f62ce20a | 3929 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3930 | { |
dcda55fc | 3931 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3932 | int code = 0; |
04892f78 | 3933 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3934 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3935 | /* | |
71200d45 | 3936 | * write() the buffer |
14a5cf38 | 3937 | */ |
de009b76 AL |
3938 | const STDCHAR *buf = b->buf; |
3939 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3940 | while (p < b->ptr) { |
3941 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3942 | if (count > 0) { | |
3943 | p += count; | |
3944 | } | |
3945 | else if (count < 0 || PerlIO_error(n)) { | |
3946 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3947 | code = -1; | |
3948 | break; | |
3949 | } | |
3950 | } | |
3951 | b->posn += (p - buf); | |
3952 | } | |
3953 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3954 | STDCHAR *buf = PerlIO_get_base(f); | |
3955 | /* | |
71200d45 | 3956 | * Note position change |
14a5cf38 JH |
3957 | */ |
3958 | b->posn += (b->ptr - buf); | |
3959 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3960 | /* We did not consume all of it - try and seek downstream to |
3961 | our logical position | |
14a5cf38 | 3962 | */ |
4b069b44 | 3963 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3964 | /* Reload n as some layers may pop themselves on seek */ |
3965 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3966 | } |
ba5c3fe9 | 3967 | else { |
4b069b44 NIS |
3968 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3969 | data is lost for good - so return saying "ok" having undone | |
3970 | the position adjust | |
3971 | */ | |
3972 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3973 | return code; |
3974 | } | |
14a5cf38 JH |
3975 | } |
3976 | } | |
3977 | b->ptr = b->end = b->buf; | |
3978 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3979 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3980 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3981 | code = -1; |
3982 | return code; | |
6f9d8c32 NIS |
3983 | } |
3984 | ||
93c2c2ec IZ |
3985 | /* This discards the content of the buffer after b->ptr, and rereads |
3986 | * the buffer from the position off in the layer downstream; here off | |
3987 | * is at offset corresponding to b->ptr - b->buf. | |
3988 | */ | |
06da4f11 | 3989 | IV |
f62ce20a | 3990 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3991 | { |
dcda55fc | 3992 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3993 | PerlIO *n = PerlIONext(f); |
3994 | SSize_t avail; | |
3995 | /* | |
4b069b44 NIS |
3996 | * Down-stream flush is defined not to loose read data so is harmless. |
3997 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3998 | */ |
93c2c2ec | 3999 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
4000 | return -1; |
4001 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 4002 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
4003 | |
4004 | if (!b->buf) | |
22569500 | 4005 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 4006 | |
0f0eef27 | 4007 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4008 | |
14a5cf38 | 4009 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4010 | |
4011 | if (!PerlIOValid(n)) { | |
4012 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4013 | return -1; | |
4014 | } | |
4015 | ||
14a5cf38 JH |
4016 | if (PerlIO_fast_gets(n)) { |
4017 | /* | |
04892f78 | 4018 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4019 | * ->Read() because that will loop till it gets what we asked for |
4020 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4021 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4022 | */ |
4023 | avail = PerlIO_get_cnt(n); | |
4024 | if (avail <= 0) { | |
4025 | avail = PerlIO_fill(n); | |
4026 | if (avail == 0) | |
4027 | avail = PerlIO_get_cnt(n); | |
4028 | else { | |
4029 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4030 | avail = 0; | |
4031 | } | |
4032 | } | |
4033 | if (avail > 0) { | |
4034 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4035 | const SSize_t cnt = avail; |
eb160463 | 4036 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4037 | avail = b->bufsiz; |
4038 | Copy(ptr, b->buf, avail, STDCHAR); | |
4039 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4040 | } | |
4041 | } | |
4042 | else { | |
4043 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4044 | } | |
4045 | if (avail <= 0) { | |
4046 | if (avail == 0) | |
4047 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4048 | else | |
4049 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
4050 | return -1; | |
4051 | } | |
4052 | b->end = b->buf + avail; | |
4053 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4054 | return 0; | |
06da4f11 NIS |
4055 | } |
4056 | ||
6f9d8c32 | 4057 | SSize_t |
f62ce20a | 4058 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4059 | { |
04892f78 | 4060 | if (PerlIOValid(f)) { |
dcda55fc | 4061 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4062 | if (!b->ptr) |
4063 | PerlIO_get_base(f); | |
f62ce20a | 4064 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4065 | } |
4066 | return 0; | |
6f9d8c32 NIS |
4067 | } |
4068 | ||
9e353e3b | 4069 | SSize_t |
f62ce20a | 4070 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4071 | { |
14a5cf38 | 4072 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4073 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4074 | SSize_t unread = 0; |
4075 | SSize_t avail; | |
4076 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4077 | PerlIO_flush(f); | |
4078 | if (!b->buf) | |
4079 | PerlIO_get_base(f); | |
4080 | if (b->buf) { | |
4081 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4082 | /* | |
4083 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4084 | * which have been read back to buffer start |
14a5cf38 JH |
4085 | */ |
4086 | avail = (b->ptr - b->buf); | |
4087 | } | |
4088 | else { | |
4089 | /* | |
4090 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4091 | * unread |
14a5cf38 JH |
4092 | */ |
4093 | avail = b->bufsiz; | |
4094 | b->end = b->buf + avail; | |
4095 | b->ptr = b->end; | |
4096 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4097 | /* | |
71200d45 | 4098 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4099 | */ |
4100 | b->posn -= b->bufsiz; | |
4101 | } | |
4102 | if (avail > (SSize_t) count) { | |
4103 | /* | |
71200d45 | 4104 | * If we have space for more than count, just move count |
14a5cf38 JH |
4105 | */ |
4106 | avail = count; | |
4107 | } | |
4108 | if (avail > 0) { | |
4109 | b->ptr -= avail; | |
4110 | buf -= avail; | |
4111 | /* | |
4112 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4113 | * there |
14a5cf38 JH |
4114 | */ |
4115 | if (buf != b->ptr) { | |
4116 | Copy(buf, b->ptr, avail, STDCHAR); | |
4117 | } | |
4118 | count -= avail; | |
4119 | unread += avail; | |
4120 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4121 | } | |
4122 | } | |
93679785 NIS |
4123 | if (count > 0) { |
4124 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4125 | } | |
14a5cf38 | 4126 | return unread; |
760ac839 LW |
4127 | } |
4128 | ||
9e353e3b | 4129 | SSize_t |
f62ce20a | 4130 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4131 | { |
de009b76 | 4132 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4133 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4134 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4135 | Size_t written = 0; |
4136 | if (!b->buf) | |
4137 | PerlIO_get_base(f); | |
4138 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4139 | return 0; | |
0678cb22 NIS |
4140 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4141 | if (PerlIO_flush(f) != 0) { | |
4142 | return 0; | |
4143 | } | |
4144 | } | |
ee56a6b9 CS |
4145 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4146 | flushptr = buf + count; | |
4147 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4148 | --flushptr; | |
4149 | } | |
14a5cf38 JH |
4150 | while (count > 0) { |
4151 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
4152 | if ((SSize_t) count < avail) | |
4153 | avail = count; | |
ee56a6b9 CS |
4154 | if (flushptr > buf && flushptr <= buf + avail) |
4155 | avail = flushptr - buf; | |
14a5cf38 | 4156 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4157 | if (avail) { |
4158 | Copy(buf, b->ptr, avail, STDCHAR); | |
4159 | count -= avail; | |
4160 | buf += avail; | |
4161 | written += avail; | |
4162 | b->ptr += avail; | |
4163 | if (buf == flushptr) | |
4164 | PerlIO_flush(f); | |
14a5cf38 JH |
4165 | } |
4166 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4167 | if (PerlIO_flush(f) == -1) |
4168 | return -1; | |
14a5cf38 JH |
4169 | } |
4170 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4171 | PerlIO_flush(f); | |
4172 | return written; | |
9e353e3b NIS |
4173 | } |
4174 | ||
94a175e1 | 4175 | IV |
f62ce20a | 4176 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4177 | { |
14a5cf38 JH |
4178 | IV code; |
4179 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4180 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4181 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4182 | if (code == 0) { | |
de009b76 | 4183 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4184 | b->posn = PerlIO_tell(PerlIONext(f)); |
4185 | } | |
9e353e3b | 4186 | } |
14a5cf38 | 4187 | return code; |
9e353e3b NIS |
4188 | } |
4189 | ||
4190 | Off_t | |
f62ce20a | 4191 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4192 | { |
dcda55fc | 4193 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4194 | /* |
71200d45 | 4195 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4196 | */ |
4197 | Off_t posn = b->posn; | |
37725cdc | 4198 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4199 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4200 | #if 1 | |
4201 | /* As O_APPEND files are normally shared in some sense it is better | |
4202 | to flush : | |
4203 | */ | |
4204 | PerlIO_flush(f); | |
4205 | #else | |
37725cdc | 4206 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4207 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4208 | #endif | |
4209 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4210 | } | |
14a5cf38 JH |
4211 | if (b->buf) { |
4212 | /* | |
71200d45 | 4213 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4214 | */ |
4215 | posn += (b->ptr - b->buf); | |
4216 | } | |
4217 | return posn; | |
9e353e3b NIS |
4218 | } |
4219 | ||
4220 | IV | |
44798d05 NIS |
4221 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4222 | { | |
de009b76 AL |
4223 | const IV code = PerlIOBase_popped(aTHX_ f); |
4224 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4225 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4226 | Safefree(b->buf); | |
4227 | } | |
dcda55fc | 4228 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4229 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4230 | return code; | |
4231 | } | |
4232 | ||
4233 | IV | |
f62ce20a | 4234 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4235 | { |
de009b76 AL |
4236 | const IV code = PerlIOBase_close(aTHX_ f); |
4237 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4238 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4239 | Safefree(b->buf); |
14a5cf38 | 4240 | } |
dcda55fc | 4241 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4242 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4243 | return code; | |
760ac839 LW |
4244 | } |
4245 | ||
9e353e3b | 4246 | STDCHAR * |
f62ce20a | 4247 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4248 | { |
dcda55fc | 4249 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4250 | if (!b->buf) |
4251 | PerlIO_get_base(f); | |
4252 | return b->ptr; | |
9e353e3b NIS |
4253 | } |
4254 | ||
05d1247b | 4255 | SSize_t |
f62ce20a | 4256 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4257 | { |
dcda55fc | 4258 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4259 | if (!b->buf) |
4260 | PerlIO_get_base(f); | |
4261 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4262 | return (b->end - b->ptr); | |
4263 | return 0; | |
9e353e3b NIS |
4264 | } |
4265 | ||
4266 | STDCHAR * | |
f62ce20a | 4267 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4268 | { |
dcda55fc | 4269 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4270 | PERL_UNUSED_CONTEXT; |
4271 | ||
14a5cf38 JH |
4272 | if (!b->buf) { |
4273 | if (!b->bufsiz) | |
1810cd7c | 4274 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4275 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4276 | if (!b->buf) { |
4277 | b->buf = (STDCHAR *) & b->oneword; | |
4278 | b->bufsiz = sizeof(b->oneword); | |
4279 | } | |
dcda55fc | 4280 | b->end = b->ptr = b->buf; |
06da4f11 | 4281 | } |
14a5cf38 | 4282 | return b->buf; |
9e353e3b NIS |
4283 | } |
4284 | ||
4285 | Size_t | |
f62ce20a | 4286 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4287 | { |
dcda55fc | 4288 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4289 | if (!b->buf) |
4290 | PerlIO_get_base(f); | |
4291 | return (b->end - b->buf); | |
9e353e3b NIS |
4292 | } |
4293 | ||
4294 | void | |
f62ce20a | 4295 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4296 | { |
dcda55fc | 4297 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4298 | #ifndef DEBUGGING |
4299 | PERL_UNUSED_ARG(cnt); | |
4300 | #endif | |
14a5cf38 JH |
4301 | if (!b->buf) |
4302 | PerlIO_get_base(f); | |
4303 | b->ptr = ptr; | |
b727803b RGS |
4304 | assert(PerlIO_get_cnt(f) == cnt); |
4305 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4306 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4307 | } |
4308 | ||
71200d45 | 4309 | PerlIO * |
ecdeb87c | 4310 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4311 | { |
ecdeb87c | 4312 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4313 | } |
4314 | ||
4315 | ||
4316 | ||
27da23d5 | 4317 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4318 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4319 | "perlio", |
4320 | sizeof(PerlIOBuf), | |
86e05cf2 | 4321 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4322 | PerlIOBuf_pushed, |
44798d05 | 4323 | PerlIOBuf_popped, |
14a5cf38 | 4324 | PerlIOBuf_open, |
86e05cf2 | 4325 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4326 | NULL, |
4327 | PerlIOBase_fileno, | |
71200d45 | 4328 | PerlIOBuf_dup, |
14a5cf38 JH |
4329 | PerlIOBuf_read, |
4330 | PerlIOBuf_unread, | |
4331 | PerlIOBuf_write, | |
4332 | PerlIOBuf_seek, | |
4333 | PerlIOBuf_tell, | |
4334 | PerlIOBuf_close, | |
4335 | PerlIOBuf_flush, | |
4336 | PerlIOBuf_fill, | |
4337 | PerlIOBase_eof, | |
4338 | PerlIOBase_error, | |
4339 | PerlIOBase_clearerr, | |
4340 | PerlIOBase_setlinebuf, | |
4341 | PerlIOBuf_get_base, | |
4342 | PerlIOBuf_bufsiz, | |
4343 | PerlIOBuf_get_ptr, | |
4344 | PerlIOBuf_get_cnt, | |
4345 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4346 | }; |
4347 | ||
66ecd56b | 4348 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4349 | /* |
71200d45 | 4350 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4351 | */ |
5e2ab84b NIS |
4352 | |
4353 | IV | |
f62ce20a | 4354 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4355 | { |
14a5cf38 | 4356 | /* |
71200d45 | 4357 | * Should never happen |
14a5cf38 JH |
4358 | */ |
4359 | PerlIO_flush(f); | |
4360 | return 0; | |
5e2ab84b NIS |
4361 | } |
4362 | ||
4363 | IV | |
f62ce20a | 4364 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4365 | { |
14a5cf38 | 4366 | /* |
71200d45 | 4367 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4368 | */ |
4369 | PerlIO_flush(f); | |
4370 | return PerlIO_close(f); | |
5e2ab84b NIS |
4371 | } |
4372 | ||
94a175e1 | 4373 | IV |
f62ce20a | 4374 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4375 | { |
14a5cf38 | 4376 | /* |
71200d45 | 4377 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4378 | */ |
4379 | PerlIO_flush(f); | |
4380 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4381 | } |
4382 | ||
4383 | ||
4384 | IV | |
f62ce20a | 4385 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4386 | { |
dcda55fc | 4387 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4388 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4389 | Safefree(b->buf); |
14a5cf38 JH |
4390 | b->buf = NULL; |
4391 | } | |
4392 | PerlIO_pop(aTHX_ f); | |
4393 | return 0; | |
5e2ab84b NIS |
4394 | } |
4395 | ||
4396 | void | |
f62ce20a | 4397 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4398 | { |
14a5cf38 JH |
4399 | if (cnt <= 0) { |
4400 | PerlIO_flush(f); | |
4401 | } | |
4402 | else { | |
f62ce20a | 4403 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4404 | } |
5e2ab84b NIS |
4405 | } |
4406 | ||
4407 | IV | |
2dc2558e | 4408 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4409 | { |
de009b76 | 4410 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4411 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4412 | /* |
71200d45 NIS |
4413 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4414 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4415 | */ |
4416 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4417 | (PerlIOBase(PerlIONext(f))-> | |
4418 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4419 | return code; | |
5e2ab84b NIS |
4420 | } |
4421 | ||
4422 | SSize_t | |
f62ce20a | 4423 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4424 | { |
14a5cf38 JH |
4425 | SSize_t avail = PerlIO_get_cnt(f); |
4426 | SSize_t got = 0; | |
eb160463 | 4427 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4428 | avail = count; |
4429 | if (avail > 0) | |
f62ce20a | 4430 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4431 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4432 | const SSize_t more = |
14a5cf38 JH |
4433 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4434 | if (more >= 0 || got == 0) | |
4435 | got += more; | |
4436 | } | |
4437 | return got; | |
5e2ab84b NIS |
4438 | } |
4439 | ||
27da23d5 | 4440 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4441 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4442 | "pending", |
4443 | sizeof(PerlIOBuf), | |
86e05cf2 | 4444 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4445 | PerlIOPending_pushed, |
44798d05 | 4446 | PerlIOBuf_popped, |
14a5cf38 | 4447 | NULL, |
86e05cf2 | 4448 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4449 | NULL, |
4450 | PerlIOBase_fileno, | |
71200d45 | 4451 | PerlIOBuf_dup, |
14a5cf38 JH |
4452 | PerlIOPending_read, |
4453 | PerlIOBuf_unread, | |
4454 | PerlIOBuf_write, | |
4455 | PerlIOPending_seek, | |
4456 | PerlIOBuf_tell, | |
4457 | PerlIOPending_close, | |
4458 | PerlIOPending_flush, | |
4459 | PerlIOPending_fill, | |
4460 | PerlIOBase_eof, | |
4461 | PerlIOBase_error, | |
4462 | PerlIOBase_clearerr, | |
4463 | PerlIOBase_setlinebuf, | |
4464 | PerlIOBuf_get_base, | |
4465 | PerlIOBuf_bufsiz, | |
4466 | PerlIOBuf_get_ptr, | |
4467 | PerlIOBuf_get_cnt, | |
4468 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4469 | }; |
4470 | ||
4471 | ||
4472 | ||
4473 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4474 | /* |
4475 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4476 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4477 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4478 | * |
4479 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4480 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4481 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4482 | * that it ends at c->nl; these two cases can be distinguished by | |
4483 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4484 | * _unread() and _flush() calls. | |
4485 | * It only matters for read operations. | |
66ecd56b NIS |
4486 | */ |
4487 | ||
14a5cf38 | 4488 | typedef struct { |
22569500 NIS |
4489 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4490 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4491 | * buffer */ |
99efab12 NIS |
4492 | } PerlIOCrlf; |
4493 | ||
ff1e3883 JD |
4494 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4495 | * Otherwise the :crlf layer would always revert back to | |
4496 | * raw mode. | |
4497 | */ | |
4498 | static void | |
4499 | S_inherit_utf8_flag(PerlIO *f) | |
4500 | { | |
4501 | PerlIO *g = PerlIONext(f); | |
4502 | if (PerlIOValid(g)) { | |
4503 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4504 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4505 | } | |
4506 | } | |
4507 | } | |
4508 | ||
f5b9d040 | 4509 | IV |
2dc2558e | 4510 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4511 | { |
14a5cf38 JH |
4512 | IV code; |
4513 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4514 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4515 | #if 0 |
14a5cf38 | 4516 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4517 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4518 | PerlIOBase(f)->flags); |
5e2ab84b | 4519 | #endif |
8229d19f | 4520 | { |
5da08ab0 LT |
4521 | /* If the old top layer is a CRLF layer, reactivate it (if |
4522 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4523 | PerlIO *g = PerlIONext(f); |
7826b36f | 4524 | if (PerlIOValid(g)) { |
8229d19f JH |
4525 | PerlIOl *b = PerlIOBase(g); |
4526 | if (b && b->tab == &PerlIO_crlf) { | |
4527 | if (!(b->flags & PERLIO_F_CRLF)) | |
4528 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4529 | S_inherit_utf8_flag(g); |
8229d19f JH |
4530 | PerlIO_pop(aTHX_ f); |
4531 | return code; | |
7826b36f | 4532 | } |
8229d19f JH |
4533 | } |
4534 | } | |
ff1e3883 | 4535 | S_inherit_utf8_flag(f); |
14a5cf38 | 4536 | return code; |
f5b9d040 NIS |
4537 | } |
4538 | ||
4539 | ||
99efab12 | 4540 | SSize_t |
f62ce20a | 4541 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4542 | { |
dcda55fc | 4543 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4544 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4545 | *(c->nl) = 0xd; |
4546 | c->nl = NULL; | |
4547 | } | |
4548 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4549 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4550 | else { |
4551 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4552 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4553 | SSize_t unread = 0; | |
4554 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4555 | PerlIO_flush(f); | |
4556 | if (!b->buf) | |
4557 | PerlIO_get_base(f); | |
4558 | if (b->buf) { | |
4559 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4560 | b->end = b->ptr = b->buf + b->bufsiz; | |
4561 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4562 | b->posn -= b->bufsiz; | |
4563 | } | |
4564 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4565 | const int ch = *--buf; |
14a5cf38 JH |
4566 | if (ch == '\n') { |
4567 | if (b->ptr - 2 >= b->buf) { | |
4568 | *--(b->ptr) = 0xa; | |
4569 | *--(b->ptr) = 0xd; | |
4570 | unread++; | |
4571 | count--; | |
4572 | } | |
4573 | else { | |
93c2c2ec IZ |
4574 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4575 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4576 | unread++; | |
4577 | count--; | |
14a5cf38 JH |
4578 | } |
4579 | } | |
4580 | else { | |
4581 | *--(b->ptr) = ch; | |
4582 | unread++; | |
4583 | count--; | |
4584 | } | |
4585 | } | |
4586 | } | |
4587 | return unread; | |
4588 | } | |
99efab12 NIS |
4589 | } |
4590 | ||
93c2c2ec | 4591 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4592 | SSize_t |
f62ce20a | 4593 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4594 | { |
dcda55fc | 4595 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4596 | if (!b->buf) |
4597 | PerlIO_get_base(f); | |
4598 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4599 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4600 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4601 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4602 | scan: |
4603 | while (nl < b->end && *nl != 0xd) | |
4604 | nl++; | |
4605 | if (nl < b->end && *nl == 0xd) { | |
4606 | test: | |
4607 | if (nl + 1 < b->end) { | |
4608 | if (nl[1] == 0xa) { | |
4609 | *nl = '\n'; | |
4610 | c->nl = nl; | |
4611 | } | |
4612 | else { | |
4613 | /* | |
71200d45 | 4614 | * Not CR,LF but just CR |
14a5cf38 JH |
4615 | */ |
4616 | nl++; | |
4617 | goto scan; | |
4618 | } | |
4619 | } | |
4620 | else { | |
4621 | /* | |
71200d45 | 4622 | * Blast - found CR as last char in buffer |
14a5cf38 | 4623 | */ |
e87a358a | 4624 | |
14a5cf38 JH |
4625 | if (b->ptr < nl) { |
4626 | /* | |
4627 | * They may not care, defer work as long as | |
71200d45 | 4628 | * possible |
14a5cf38 | 4629 | */ |
a0d1d361 | 4630 | c->nl = nl; |
14a5cf38 JH |
4631 | return (nl - b->ptr); |
4632 | } | |
4633 | else { | |
4634 | int code; | |
22569500 | 4635 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4636 | * flush() is concerned */ |
22569500 | 4637 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4638 | /* Note as we have moved buf up flush's |
4639 | posn += ptr-buf | |
4640 | will naturally make posn point at CR | |
4641 | */ | |
22569500 NIS |
4642 | b->bufsiz--; /* Buffer is thus smaller */ |
4643 | code = PerlIO_fill(f); /* Fetch some more */ | |
4644 | b->bufsiz++; /* Restore size for next time */ | |
4645 | b->buf--; /* Point at space */ | |
4646 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4647 | * off */ |
22569500 | 4648 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4649 | if (code == 0) |
22569500 | 4650 | goto test; /* fill() call worked */ |
14a5cf38 | 4651 | /* |
71200d45 | 4652 | * CR at EOF - just fall through |
14a5cf38 | 4653 | */ |
a0d1d361 | 4654 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4655 | } |
4656 | } | |
4657 | } | |
4658 | } | |
4659 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4660 | } | |
4661 | return 0; | |
99efab12 NIS |
4662 | } |
4663 | ||
4664 | void | |
f62ce20a | 4665 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4666 | { |
dcda55fc AL |
4667 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4668 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4669 | if (!b->buf) |
4670 | PerlIO_get_base(f); | |
4671 | if (!ptr) { | |
a0d1d361 | 4672 | if (c->nl) { |
14a5cf38 | 4673 | ptr = c->nl + 1; |
22569500 | 4674 | if (ptr == b->end && *c->nl == 0xd) { |
486ec47a | 4675 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4676 | ptr--; |
4677 | } | |
4678 | } | |
14a5cf38 JH |
4679 | else { |
4680 | ptr = b->end; | |
14a5cf38 JH |
4681 | } |
4682 | ptr -= cnt; | |
4683 | } | |
4684 | else { | |
6f207bd3 | 4685 | NOOP; |
3b4bd3fd | 4686 | #if 0 |
14a5cf38 | 4687 | /* |
71200d45 | 4688 | * Test code - delete when it works ... |
14a5cf38 | 4689 | */ |
3b4bd3fd | 4690 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4691 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4692 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
486ec47a | 4693 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4694 | chk--; |
22569500 | 4695 | } |
14a5cf38 JH |
4696 | chk -= cnt; |
4697 | ||
a0d1d361 | 4698 | if (ptr != chk ) { |
99ef548b | 4699 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4700 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4701 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4702 | } |
99ef548b | 4703 | #endif |
14a5cf38 JH |
4704 | } |
4705 | if (c->nl) { | |
4706 | if (ptr > c->nl) { | |
4707 | /* | |
71200d45 | 4708 | * They have taken what we lied about |
14a5cf38 JH |
4709 | */ |
4710 | *(c->nl) = 0xd; | |
4711 | c->nl = NULL; | |
4712 | ptr++; | |
4713 | } | |
4714 | } | |
4715 | b->ptr = ptr; | |
4716 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4717 | } |
4718 | ||
4719 | SSize_t | |
f62ce20a | 4720 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4721 | { |
14a5cf38 | 4722 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4723 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4724 | else { |
dcda55fc | 4725 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4726 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4727 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4728 | if (!b->buf) |
4729 | PerlIO_get_base(f); | |
4730 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4731 | return 0; | |
4732 | while (buf < ebuf) { | |
dcda55fc | 4733 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4734 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4735 | while (buf < ebuf && b->ptr < eptr) { | |
4736 | if (*buf == '\n') { | |
4737 | if ((b->ptr + 2) > eptr) { | |
4738 | /* | |
71200d45 | 4739 | * Not room for both |
14a5cf38 JH |
4740 | */ |
4741 | PerlIO_flush(f); | |
4742 | break; | |
4743 | } | |
4744 | else { | |
22569500 NIS |
4745 | *(b->ptr)++ = 0xd; /* CR */ |
4746 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4747 | buf++; |
4748 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4749 | PerlIO_flush(f); | |
4750 | break; | |
4751 | } | |
4752 | } | |
4753 | } | |
4754 | else { | |
dcda55fc | 4755 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4756 | } |
4757 | if (b->ptr >= eptr) { | |
4758 | PerlIO_flush(f); | |
4759 | break; | |
4760 | } | |
4761 | } | |
4762 | } | |
4763 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4764 | PerlIO_flush(f); | |
4765 | return (buf - (STDCHAR *) vbuf); | |
4766 | } | |
99efab12 NIS |
4767 | } |
4768 | ||
4769 | IV | |
f62ce20a | 4770 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4771 | { |
dcda55fc | 4772 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4773 | if (c->nl) { |
4774 | *(c->nl) = 0xd; | |
4775 | c->nl = NULL; | |
4776 | } | |
f62ce20a | 4777 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4778 | } |
4779 | ||
86e05cf2 NIS |
4780 | IV |
4781 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4782 | { | |
4783 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4784 | /* In text mode - flush any pending stuff and flip it */ | |
4785 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4786 | #ifndef PERLIO_USING_CRLF | |
4787 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4788 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4789 | #endif |
4790 | } | |
4791 | return 0; | |
4792 | } | |
4793 | ||
27da23d5 | 4794 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4795 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4796 | "crlf", |
4797 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4798 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4799 | PerlIOCrlf_pushed, |
44798d05 | 4800 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4801 | PerlIOBuf_open, |
86e05cf2 | 4802 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4803 | NULL, |
4804 | PerlIOBase_fileno, | |
71200d45 | 4805 | PerlIOBuf_dup, |
de009b76 | 4806 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4807 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4808 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4809 | PerlIOBuf_seek, |
4810 | PerlIOBuf_tell, | |
4811 | PerlIOBuf_close, | |
4812 | PerlIOCrlf_flush, | |
4813 | PerlIOBuf_fill, | |
4814 | PerlIOBase_eof, | |
4815 | PerlIOBase_error, | |
4816 | PerlIOBase_clearerr, | |
4817 | PerlIOBase_setlinebuf, | |
4818 | PerlIOBuf_get_base, | |
4819 | PerlIOBuf_bufsiz, | |
4820 | PerlIOBuf_get_ptr, | |
4821 | PerlIOCrlf_get_cnt, | |
4822 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4823 | }; |
4824 | ||
06da4f11 NIS |
4825 | #ifdef HAS_MMAP |
4826 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4827 | /* |
71200d45 | 4828 | * mmap as "buffer" layer |
14a5cf38 | 4829 | */ |
06da4f11 | 4830 | |
14a5cf38 | 4831 | typedef struct { |
22569500 NIS |
4832 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4833 | Mmap_t mptr; /* Mapped address */ | |
4834 | Size_t len; /* mapped length */ | |
4835 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4836 | } PerlIOMmap; |
4837 | ||
4838 | IV | |
f62ce20a | 4839 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4840 | { |
27da23d5 | 4841 | dVAR; |
de009b76 AL |
4842 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4843 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4844 | IV code = 0; |
4845 | if (m->len) | |
4846 | abort(); | |
4847 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4848 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4849 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4850 | Stat_t st; |
4851 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4852 | if (code == 0 && S_ISREG(st.st_mode)) { |
4853 | SSize_t len = st.st_size - b->posn; | |
4854 | if (len > 0) { | |
4855 | Off_t posn; | |
27da23d5 JH |
4856 | if (PL_mmap_page_size <= 0) |
4857 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4858 | PL_mmap_page_size); | |
14a5cf38 JH |
4859 | if (b->posn < 0) { |
4860 | /* | |
4861 | * This is a hack - should never happen - open should | |
71200d45 | 4862 | * have set it ! |
14a5cf38 JH |
4863 | */ |
4864 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4865 | } | |
27da23d5 | 4866 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 | 4867 | len = st.st_size - posn; |
b91fbb93 | 4868 | m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); |
14a5cf38 | 4869 | if (m->mptr && m->mptr != (Mmap_t) - 1) { |
a5262162 | 4870 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4871 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4872 | #endif |
a5262162 | 4873 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4874 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4875 | #endif |
14a5cf38 JH |
4876 | PerlIOBase(f)->flags = |
4877 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4878 | b->end = ((STDCHAR *) m->mptr) + len; | |
4879 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4880 | b->ptr = b->buf; | |
4881 | m->len = len; | |
4882 | } | |
4883 | else { | |
4884 | b->buf = NULL; | |
4885 | } | |
4886 | } | |
4887 | else { | |
4888 | PerlIOBase(f)->flags = | |
4889 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4890 | b->buf = NULL; | |
4891 | b->ptr = b->end = b->ptr; | |
4892 | code = -1; | |
4893 | } | |
4894 | } | |
4895 | } | |
4896 | return code; | |
06da4f11 NIS |
4897 | } |
4898 | ||
4899 | IV | |
e87a358a | 4900 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4901 | { |
dcda55fc | 4902 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4903 | IV code = 0; |
4904 | if (m->len) { | |
dcda55fc | 4905 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4906 | if (b->buf) { |
1ccb7c8d JH |
4907 | /* The munmap address argument is tricky: depending on the |
4908 | * standard it is either "void *" or "caddr_t" (which is | |
4909 | * usually "char *" (signed or unsigned). If we cast it | |
4910 | * to "void *", those that have it caddr_t and an uptight | |
4911 | * C++ compiler, will freak out. But casting it as char* | |
4912 | * should work. Maybe. (Using Mmap_t figured out by | |
4913 | * Configure doesn't always work, apparently.) */ | |
4914 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4915 | b->buf = NULL; |
4916 | m->len = 0; | |
4917 | m->mptr = NULL; | |
4918 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4919 | code = -1; | |
4920 | } | |
4921 | b->ptr = b->end = b->buf; | |
4922 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4923 | } | |
4924 | return code; | |
06da4f11 NIS |
4925 | } |
4926 | ||
4927 | STDCHAR * | |
f62ce20a | 4928 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4929 | { |
dcda55fc AL |
4930 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4931 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4932 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4933 | /* | |
71200d45 | 4934 | * Already have a readbuffer in progress |
14a5cf38 JH |
4935 | */ |
4936 | return b->buf; | |
4937 | } | |
4938 | if (b->buf) { | |
4939 | /* | |
71200d45 | 4940 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4941 | */ |
22569500 NIS |
4942 | m->bbuf = b->buf; /* save it in case we need it again */ |
4943 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4944 | } |
4945 | if (!b->buf) { | |
22569500 | 4946 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4947 | if (!b->buf) { |
4948 | /* | |
71200d45 | 4949 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4950 | */ |
4951 | b->buf = m->bbuf; | |
4952 | } | |
4953 | } | |
4954 | b->ptr = b->end = b->buf; | |
4955 | if (b->buf) | |
4956 | return b->buf; | |
f62ce20a | 4957 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4958 | } |
4959 | ||
4960 | SSize_t | |
f62ce20a | 4961 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4962 | { |
dcda55fc AL |
4963 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4964 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4965 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4966 | PerlIO_flush(f); | |
4967 | if (b->ptr && (b->ptr - count) >= b->buf | |
4968 | && memEQ(b->ptr - count, vbuf, count)) { | |
4969 | b->ptr -= count; | |
4970 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4971 | return count; | |
4972 | } | |
4973 | if (m->len) { | |
4974 | /* | |
71200d45 | 4975 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4976 | */ |
4977 | PerlIO_flush(f); | |
4978 | /* | |
71200d45 | 4979 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4980 | */ |
4981 | if (!b->buf && m->bbuf) | |
4982 | b->buf = m->bbuf; | |
4983 | if (!b->buf) { | |
f62ce20a | 4984 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4985 | m->bbuf = b->buf; |
4986 | } | |
4987 | } | |
f62ce20a | 4988 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4989 | } |
4990 | ||
4991 | SSize_t | |
f62ce20a | 4992 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4993 | { |
de009b76 AL |
4994 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4995 | PerlIOBuf * const b = &m->base; | |
4996 | ||
14a5cf38 JH |
4997 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4998 | /* | |
71200d45 | 4999 | * No, or wrong sort of, buffer |
14a5cf38 JH |
5000 | */ |
5001 | if (m->len) { | |
e87a358a | 5002 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
5003 | return 0; |
5004 | } | |
5005 | /* | |
71200d45 | 5006 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
5007 | */ |
5008 | if (!b->buf && m->bbuf) | |
5009 | b->buf = m->bbuf; | |
5010 | if (!b->buf) { | |
f62ce20a | 5011 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
5012 | m->bbuf = b->buf; |
5013 | } | |
06da4f11 | 5014 | } |
f62ce20a | 5015 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
5016 | } |
5017 | ||
5018 | IV | |
f62ce20a | 5019 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 5020 | { |
dcda55fc AL |
5021 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
5022 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 5023 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 5024 | /* |
71200d45 | 5025 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
5026 | */ |
5027 | if (b->buf) { | |
5028 | if (m->len) { | |
5029 | /* | |
71200d45 | 5030 | * Unmap the buffer |
14a5cf38 | 5031 | */ |
e87a358a | 5032 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
5033 | code = -1; |
5034 | } | |
5035 | else { | |
5036 | /* | |
5037 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 5038 | * remember it in case we need one later |
14a5cf38 JH |
5039 | */ |
5040 | m->bbuf = b->buf; | |
5041 | } | |
5042 | } | |
5043 | return code; | |
06da4f11 NIS |
5044 | } |
5045 | ||
5046 | IV | |
f62ce20a | 5047 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 5048 | { |
dcda55fc | 5049 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
5050 | IV code = PerlIO_flush(f); |
5051 | if (code == 0 && !b->buf) { | |
f62ce20a | 5052 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
5053 | } |
5054 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 5055 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
5056 | } |
5057 | return code; | |
06da4f11 NIS |
5058 | } |
5059 | ||
5060 | IV | |
f62ce20a | 5061 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 5062 | { |
dcda55fc AL |
5063 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
5064 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
5065 | IV code = PerlIO_flush(f); |
5066 | if (m->bbuf) { | |
5067 | b->buf = m->bbuf; | |
5068 | m->bbuf = NULL; | |
5069 | b->ptr = b->end = b->buf; | |
5070 | } | |
f62ce20a | 5071 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
5072 | code = -1; |
5073 | return code; | |
06da4f11 NIS |
5074 | } |
5075 | ||
71200d45 | 5076 | PerlIO * |
ecdeb87c | 5077 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 5078 | { |
ecdeb87c | 5079 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
5080 | } |
5081 | ||
06da4f11 | 5082 | |
27da23d5 | 5083 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 5084 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
5085 | "mmap", |
5086 | sizeof(PerlIOMmap), | |
86e05cf2 | 5087 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 5088 | PerlIOBuf_pushed, |
44798d05 | 5089 | PerlIOBuf_popped, |
14a5cf38 | 5090 | PerlIOBuf_open, |
86e05cf2 | 5091 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
5092 | NULL, |
5093 | PerlIOBase_fileno, | |
71200d45 | 5094 | PerlIOMmap_dup, |
14a5cf38 JH |
5095 | PerlIOBuf_read, |
5096 | PerlIOMmap_unread, | |
5097 | PerlIOMmap_write, | |
5098 | PerlIOBuf_seek, | |
5099 | PerlIOBuf_tell, | |
5100 | PerlIOBuf_close, | |
5101 | PerlIOMmap_flush, | |
5102 | PerlIOMmap_fill, | |
5103 | PerlIOBase_eof, | |
5104 | PerlIOBase_error, | |
5105 | PerlIOBase_clearerr, | |
5106 | PerlIOBase_setlinebuf, | |
5107 | PerlIOMmap_get_base, | |
5108 | PerlIOBuf_bufsiz, | |
5109 | PerlIOBuf_get_ptr, | |
5110 | PerlIOBuf_get_cnt, | |
5111 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
5112 | }; |
5113 | ||
22569500 | 5114 | #endif /* HAS_MMAP */ |
06da4f11 | 5115 | |
9e353e3b | 5116 | PerlIO * |
e87a358a | 5117 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 5118 | { |
97aff369 | 5119 | dVAR; |
a1ea730d | 5120 | if (!PL_perlio) { |
14a5cf38 JH |
5121 | PerlIO_stdstreams(aTHX); |
5122 | } | |
303f2dc3 | 5123 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
5124 | } |
5125 | ||
9e353e3b | 5126 | PerlIO * |
e87a358a | 5127 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 5128 | { |
97aff369 | 5129 | dVAR; |
a1ea730d | 5130 | if (!PL_perlio) { |
14a5cf38 JH |
5131 | PerlIO_stdstreams(aTHX); |
5132 | } | |
303f2dc3 | 5133 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
5134 | } |
5135 | ||
9e353e3b | 5136 | PerlIO * |
e87a358a | 5137 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 5138 | { |
97aff369 | 5139 | dVAR; |
a1ea730d | 5140 | if (!PL_perlio) { |
14a5cf38 JH |
5141 | PerlIO_stdstreams(aTHX); |
5142 | } | |
303f2dc3 | 5143 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
5144 | } |
5145 | ||
5146 | /*--------------------------------------------------------------------------------------*/ | |
5147 | ||
9e353e3b NIS |
5148 | char * |
5149 | PerlIO_getname(PerlIO *f, char *buf) | |
5150 | { | |
14a5cf38 | 5151 | dTHX; |
a15cef0c | 5152 | #ifdef VMS |
73d840c0 | 5153 | char *name = NULL; |
7659f319 | 5154 | bool exported = FALSE; |
14a5cf38 | 5155 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
5156 | if (!stdio) { |
5157 | stdio = PerlIO_exportFILE(f,0); | |
5158 | exported = TRUE; | |
5159 | } | |
5160 | if (stdio) { | |
14a5cf38 | 5161 | name = fgetname(stdio, buf); |
7659f319 CB |
5162 | if (exported) PerlIO_releaseFILE(f,stdio); |
5163 | } | |
73d840c0 | 5164 | return name; |
a15cef0c | 5165 | #else |
8772537c AL |
5166 | PERL_UNUSED_ARG(f); |
5167 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 5168 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 5169 | return NULL; |
a15cef0c | 5170 | #endif |
9e353e3b NIS |
5171 | } |
5172 | ||
5173 | ||
5174 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
5175 | /* |
5176 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 5177 | * terms of above |
14a5cf38 | 5178 | */ |
9e353e3b | 5179 | |
e87a358a NIS |
5180 | #undef PerlIO_fdopen |
5181 | PerlIO * | |
5182 | PerlIO_fdopen(int fd, const char *mode) | |
5183 | { | |
5184 | dTHX; | |
bd61b366 | 5185 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
5186 | } |
5187 | ||
5188 | #undef PerlIO_open | |
5189 | PerlIO * | |
5190 | PerlIO_open(const char *path, const char *mode) | |
5191 | { | |
5192 | dTHX; | |
42d9b98d | 5193 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 5194 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
5195 | } |
5196 | ||
5197 | #undef Perlio_reopen | |
5198 | PerlIO * | |
5199 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
5200 | { | |
5201 | dTHX; | |
42d9b98d | 5202 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 5203 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
5204 | } |
5205 | ||
9e353e3b | 5206 | #undef PerlIO_getc |
6f9d8c32 | 5207 | int |
9e353e3b | 5208 | PerlIO_getc(PerlIO *f) |
760ac839 | 5209 | { |
e87a358a | 5210 | dTHX; |
14a5cf38 | 5211 | STDCHAR buf[1]; |
de009b76 | 5212 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
5213 | return (unsigned char) buf[0]; |
5214 | } | |
5215 | return EOF; | |
313ca112 NIS |
5216 | } |
5217 | ||
5218 | #undef PerlIO_ungetc | |
5219 | int | |
5220 | PerlIO_ungetc(PerlIO *f, int ch) | |
5221 | { | |
e87a358a | 5222 | dTHX; |
14a5cf38 JH |
5223 | if (ch != EOF) { |
5224 | STDCHAR buf = ch; | |
5225 | if (PerlIO_unread(f, &buf, 1) == 1) | |
5226 | return ch; | |
5227 | } | |
5228 | return EOF; | |
760ac839 LW |
5229 | } |
5230 | ||
9e353e3b NIS |
5231 | #undef PerlIO_putc |
5232 | int | |
5233 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 5234 | { |
e87a358a | 5235 | dTHX; |
14a5cf38 JH |
5236 | STDCHAR buf = ch; |
5237 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5238 | } |
5239 | ||
9e353e3b | 5240 | #undef PerlIO_puts |
760ac839 | 5241 | int |
9e353e3b | 5242 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5243 | { |
e87a358a | 5244 | dTHX; |
dcda55fc | 5245 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5246 | } |
5247 | ||
5248 | #undef PerlIO_rewind | |
5249 | void | |
c78749f2 | 5250 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5251 | { |
e87a358a | 5252 | dTHX; |
14a5cf38 JH |
5253 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5254 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5255 | } |
5256 | ||
5257 | #undef PerlIO_vprintf | |
5258 | int | |
5259 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5260 | { | |
14a5cf38 | 5261 | dTHX; |
53ce71d3 | 5262 | SV * sv; |
b83604b4 | 5263 | const char *s; |
14a5cf38 JH |
5264 | STRLEN len; |
5265 | SSize_t wrote; | |
2cc61e15 | 5266 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5267 | va_list apc; |
5268 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5269 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 5270 | #else |
53ce71d3 | 5271 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5272 | #endif |
b83604b4 | 5273 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5274 | wrote = PerlIO_write(f, s, len); |
5275 | SvREFCNT_dec(sv); | |
5276 | return wrote; | |
760ac839 LW |
5277 | } |
5278 | ||
5279 | #undef PerlIO_printf | |
6f9d8c32 | 5280 | int |
14a5cf38 | 5281 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5282 | { |
14a5cf38 JH |
5283 | va_list ap; |
5284 | int result; | |
5285 | va_start(ap, fmt); | |
5286 | result = PerlIO_vprintf(f, fmt, ap); | |
5287 | va_end(ap); | |
5288 | return result; | |
760ac839 LW |
5289 | } |
5290 | ||
5291 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5292 | int |
14a5cf38 | 5293 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5294 | { |
e87a358a | 5295 | dTHX; |
14a5cf38 JH |
5296 | va_list ap; |
5297 | int result; | |
5298 | va_start(ap, fmt); | |
5299 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5300 | va_end(ap); | |
5301 | return result; | |
760ac839 LW |
5302 | } |
5303 | ||
5304 | #undef PerlIO_tmpfile | |
5305 | PerlIO * | |
c78749f2 | 5306 | PerlIO_tmpfile(void) |
760ac839 | 5307 | { |
2941a2e1 JH |
5308 | dTHX; |
5309 | PerlIO *f = NULL; | |
2941a2e1 | 5310 | #ifdef WIN32 |
de009b76 | 5311 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5312 | if (fd >= 0) |
5313 | f = PerlIO_fdopen(fd, "w+b"); | |
5314 | #else /* WIN32 */ | |
460c8493 | 5315 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5316 | int fd = -1; |
5317 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
5318 | const char * const tmpdir = PL_tainting ? NULL : PerlEnv_getenv("TMPDIR"); | |
525f6fe9 | 5319 | SV * sv = NULL; |
2941a2e1 JH |
5320 | /* |
5321 | * I have no idea how portable mkstemp() is ... NI-S | |
5322 | */ | |
7299ca58 | 5323 | if (tmpdir && *tmpdir) { |
0b99e986 | 5324 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5325 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5326 | sv_catpv(sv, tempname + 4); |
5327 | fd = mkstemp(SvPVX(sv)); | |
5328 | } | |
5329 | if (fd < 0) { | |
7299ca58 | 5330 | sv = NULL; |
0b99e986 RGS |
5331 | /* else we try /tmp */ |
5332 | fd = mkstemp(tempname); | |
5333 | } | |
2941a2e1 JH |
5334 | if (fd >= 0) { |
5335 | f = PerlIO_fdopen(fd, "w+"); | |
5336 | if (f) | |
5337 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5338 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5339 | } |
ef8d46e8 | 5340 | SvREFCNT_dec(sv); |
2941a2e1 | 5341 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5342 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5343 | |
085e731f CB |
5344 | if (stdio) |
5345 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5346 | ||
2941a2e1 JH |
5347 | # endif /* else HAS_MKSTEMP */ |
5348 | #endif /* else WIN32 */ | |
5349 | return f; | |
760ac839 LW |
5350 | } |
5351 | ||
6f9d8c32 NIS |
5352 | #undef HAS_FSETPOS |
5353 | #undef HAS_FGETPOS | |
5354 | ||
22569500 NIS |
5355 | #endif /* USE_SFIO */ |
5356 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5357 | |
9e353e3b | 5358 | /*======================================================================================*/ |
14a5cf38 | 5359 | /* |
71200d45 NIS |
5360 | * Now some functions in terms of above which may be needed even if we are |
5361 | * not in true PerlIO mode | |
9e353e3b | 5362 | */ |
188f0c84 YO |
5363 | const char * |
5364 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5365 | { | |
5366 | dVAR; | |
8b850bd5 NC |
5367 | const char *direction = NULL; |
5368 | SV *layers; | |
188f0c84 YO |
5369 | /* |
5370 | * Need to supply default layer info from open.pm | |
5371 | */ | |
8b850bd5 NC |
5372 | |
5373 | if (!PL_curcop) | |
5374 | return NULL; | |
5375 | ||
5376 | if (mode && mode[0] != 'r') { | |
5377 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5378 | direction = "open>"; | |
5379 | } else { | |
5380 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5381 | direction = "open<"; | |
188f0c84 | 5382 | } |
8b850bd5 NC |
5383 | if (!direction) |
5384 | return NULL; | |
5385 | ||
20439bc7 | 5386 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5387 | |
5388 | assert(layers); | |
5389 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5390 | } |
5391 | ||
9e353e3b | 5392 | |
760ac839 LW |
5393 | #ifndef HAS_FSETPOS |
5394 | #undef PerlIO_setpos | |
5395 | int | |
766a733e | 5396 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5397 | { |
14a5cf38 JH |
5398 | dTHX; |
5399 | if (SvOK(pos)) { | |
5400 | STRLEN len; | |
c4420975 | 5401 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5402 | if (f && len == sizeof(Off_t)) |
5403 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5404 | } | |
93189314 | 5405 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5406 | return -1; |
760ac839 | 5407 | } |
c411622e | 5408 | #else |
c411622e | 5409 | #undef PerlIO_setpos |
5410 | int | |
766a733e | 5411 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5412 | { |
14a5cf38 JH |
5413 | dTHX; |
5414 | if (SvOK(pos)) { | |
5415 | STRLEN len; | |
c4420975 | 5416 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5417 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5418 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5419 | return fsetpos64(f, fpos); |
d9b3e12d | 5420 | #else |
14a5cf38 | 5421 | return fsetpos(f, fpos); |
d9b3e12d | 5422 | #endif |
14a5cf38 | 5423 | } |
766a733e | 5424 | } |
93189314 | 5425 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5426 | return -1; |
c411622e | 5427 | } |
5428 | #endif | |
760ac839 LW |
5429 | |
5430 | #ifndef HAS_FGETPOS | |
5431 | #undef PerlIO_getpos | |
5432 | int | |
766a733e | 5433 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5434 | { |
14a5cf38 JH |
5435 | dTHX; |
5436 | Off_t posn = PerlIO_tell(f); | |
5437 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5438 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5439 | } |
c411622e | 5440 | #else |
c411622e | 5441 | #undef PerlIO_getpos |
5442 | int | |
766a733e | 5443 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5444 | { |
14a5cf38 JH |
5445 | dTHX; |
5446 | Fpos_t fpos; | |
5447 | int code; | |
2d4389e4 | 5448 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5449 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5450 | #else |
14a5cf38 | 5451 | code = fgetpos(f, &fpos); |
d9b3e12d | 5452 | #endif |
14a5cf38 JH |
5453 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5454 | return code; | |
c411622e | 5455 | } |
5456 | #endif | |
760ac839 LW |
5457 | |
5458 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5459 | ||
5460 | int | |
c78749f2 | 5461 | vprintf(char *pat, char *args) |
662a7e3f CS |
5462 | { |
5463 | _doprnt(pat, args, stdout); | |
22569500 | 5464 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5465 | * value */ |
662a7e3f CS |
5466 | } |
5467 | ||
5468 | int | |
c78749f2 | 5469 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5470 | { |
5471 | _doprnt(pat, args, fd); | |
22569500 | 5472 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5473 | * value */ |
760ac839 LW |
5474 | } |
5475 | ||
5476 | #endif | |
5477 | ||
5478 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5479 | int |
8ac85365 | 5480 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5481 | { |
8ff9a42b | 5482 | dTHX; |
d9fad198 | 5483 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5484 | PERL_UNUSED_CONTEXT; |
5485 | ||
1208b3dd JH |
5486 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5487 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5488 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5489 | } |
1208b3dd | 5490 | #endif |
14a5cf38 | 5491 | return val; |
760ac839 LW |
5492 | } |
5493 | #endif | |
5494 | ||
5495 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5496 | int |
14a5cf38 | 5497 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5498 | { |
14a5cf38 JH |
5499 | va_list ap; |
5500 | int result; | |
5501 | va_start(ap, fmt); | |
5502 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5503 | va_end(ap); | |
5504 | return result; | |
760ac839 LW |
5505 | } |
5506 | #endif | |
9cfa90c0 NC |
5507 | |
5508 | /* | |
5509 | * Local variables: | |
5510 | * c-indentation-style: bsd | |
5511 | * c-basic-offset: 4 | |
5512 | * indent-tabs-mode: t | |
5513 | * End: | |
5514 | * | |
37442d52 RGS |
5515 | * ex: set ts=8 sts=4 sw=4 noet: |
5516 | */ |