Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
5cb43542 RGS |
2 | * perlio.c |
3 | * Copyright (c) 1996-2006, Nick Ing-Simmons | |
2eee27d7 | 4 | * Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011 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 | ||
6f9d8c32 | 454 | void |
14a5cf38 JH |
455 | PerlIO_debug(const char *fmt, ...) |
456 | { | |
14a5cf38 JH |
457 | va_list ap; |
458 | dSYS; | |
459 | va_start(ap, fmt); | |
582588d2 NC |
460 | if (!PL_perlio_debug_fd) { |
461 | if (!PL_tainting && PL_uid == PL_euid && PL_gid == PL_egid) { | |
462 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); | |
463 | if (s && *s) | |
464 | PL_perlio_debug_fd | |
465 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
466 | else | |
467 | PL_perlio_debug_fd = -1; | |
468 | } else { | |
469 | /* tainting or set*id, so ignore the environment, and ensure we | |
470 | skip these tests next time through. */ | |
27da23d5 | 471 | PL_perlio_debug_fd = -1; |
582588d2 | 472 | } |
14a5cf38 | 473 | } |
27da23d5 | 474 | if (PL_perlio_debug_fd > 0) { |
14a5cf38 | 475 | dTHX; |
70ace5da | 476 | #ifdef USE_ITHREADS |
dcda55fc | 477 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
478 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
479 | char buffer[1024]; | |
1208b3dd JH |
480 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
481 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
482 | PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); | |
70ace5da | 483 | #else |
dcda55fc AL |
484 | const char *s = CopFILE(PL_curcop); |
485 | STRLEN len; | |
550e2ce0 NC |
486 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
487 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
488 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
489 | ||
b83604b4 | 490 | s = SvPV_const(sv, len); |
27da23d5 | 491 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 492 | SvREFCNT_dec(sv); |
70ace5da | 493 | #endif |
14a5cf38 JH |
494 | } |
495 | va_end(ap); | |
6f9d8c32 NIS |
496 | } |
497 | ||
9e353e3b NIS |
498 | /*--------------------------------------------------------------------------------------*/ |
499 | ||
14a5cf38 | 500 | /* |
71200d45 | 501 | * Inner level routines |
14a5cf38 | 502 | */ |
9e353e3b | 503 | |
16865ff7 DM |
504 | /* check that the head field of each layer points back to the head */ |
505 | ||
506 | #ifdef DEBUGGING | |
507 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
508 | static void | |
509 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
510 | { | |
511 | PerlIOl *head, *p; | |
512 | int seen = 0; | |
513 | if (!PerlIOValid(f)) | |
514 | return; | |
515 | p = head = PerlIOBase(f)->head; | |
516 | assert(p); | |
517 | do { | |
518 | assert(p->head == head); | |
519 | if (p == (PerlIOl*)f) | |
520 | seen = 1; | |
521 | p = p->next; | |
522 | } while (p); | |
523 | assert(seen); | |
524 | } | |
525 | #else | |
526 | # define VERIFY_HEAD(f) | |
527 | #endif | |
528 | ||
529 | ||
14a5cf38 | 530 | /* |
71200d45 | 531 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 532 | */ |
05d1247b | 533 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 534 | |
8995e67d DM |
535 | static void |
536 | PerlIO_init_table(pTHX) | |
537 | { | |
538 | if (PL_perlio) | |
539 | return; | |
540 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
541 | } | |
542 | ||
543 | ||
544 | ||
760ac839 | 545 | PerlIO * |
5f1a76d0 | 546 | PerlIO_allocate(pTHX) |
6f9d8c32 | 547 | { |
97aff369 | 548 | dVAR; |
14a5cf38 | 549 | /* |
71200d45 | 550 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 551 | */ |
303f2dc3 DM |
552 | PerlIOl **last; |
553 | PerlIOl *f; | |
a1ea730d | 554 | last = &PL_perlio; |
14a5cf38 JH |
555 | while ((f = *last)) { |
556 | int i; | |
303f2dc3 | 557 | last = (PerlIOl **) (f); |
14a5cf38 | 558 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 559 | if (!((++f)->next)) { |
abf9167d | 560 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 561 | f->tab = NULL; |
16865ff7 | 562 | f->head = f; |
303f2dc3 | 563 | return (PerlIO *)f; |
14a5cf38 JH |
564 | } |
565 | } | |
566 | } | |
303f2dc3 | 567 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
568 | if (!f) { |
569 | return NULL; | |
570 | } | |
303f2dc3 | 571 | *last = (PerlIOl*) f++; |
abf9167d | 572 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 573 | f->tab = NULL; |
16865ff7 | 574 | f->head = f; |
303f2dc3 | 575 | return (PerlIO*) f; |
05d1247b NIS |
576 | } |
577 | ||
a1ea730d NIS |
578 | #undef PerlIO_fdupopen |
579 | PerlIO * | |
ecdeb87c | 580 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 581 | { |
04892f78 | 582 | if (PerlIOValid(f)) { |
de009b76 | 583 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 584 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
585 | if (tab && tab->Dup) |
586 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
587 | else { |
588 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
589 | } | |
a1ea730d | 590 | } |
210e727c JH |
591 | else |
592 | SETERRNO(EBADF, SS_IVCHAN); | |
593 | ||
594 | return NULL; | |
a1ea730d NIS |
595 | } |
596 | ||
597 | void | |
303f2dc3 | 598 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 599 | { |
303f2dc3 | 600 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
601 | if (table) { |
602 | int i; | |
303f2dc3 | 603 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 604 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
605 | PerlIOl * const f = table + i; |
606 | if (f->next) { | |
607 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
608 | } |
609 | } | |
3a1ee7e8 | 610 | Safefree(table); |
14a5cf38 | 611 | *tablep = NULL; |
05d1247b | 612 | } |
05d1247b NIS |
613 | } |
614 | ||
fcf2db38 NIS |
615 | |
616 | PerlIO_list_t * | |
3a1ee7e8 | 617 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 618 | { |
14a5cf38 | 619 | PerlIO_list_t *list; |
96a5add6 | 620 | PERL_UNUSED_CONTEXT; |
a02a5408 | 621 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
622 | list->refcnt = 1; |
623 | return list; | |
fcf2db38 NIS |
624 | } |
625 | ||
626 | void | |
3a1ee7e8 | 627 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 628 | { |
14a5cf38 JH |
629 | if (list) { |
630 | if (--list->refcnt == 0) { | |
631 | if (list->array) { | |
14a5cf38 | 632 | IV i; |
ef8d46e8 VP |
633 | for (i = 0; i < list->cur; i++) |
634 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
635 | Safefree(list->array); |
636 | } | |
637 | Safefree(list); | |
638 | } | |
639 | } | |
fcf2db38 NIS |
640 | } |
641 | ||
642 | void | |
3a1ee7e8 | 643 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 644 | { |
97aff369 | 645 | dVAR; |
334e202e | 646 | PerlIO_pair_t *p; |
b37c2d43 AL |
647 | PERL_UNUSED_CONTEXT; |
648 | ||
14a5cf38 JH |
649 | if (list->cur >= list->len) { |
650 | list->len += 8; | |
651 | if (list->array) | |
652 | Renew(list->array, list->len, PerlIO_pair_t); | |
653 | else | |
a02a5408 | 654 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
655 | } |
656 | p = &(list->array[list->cur++]); | |
657 | p->funcs = funcs; | |
658 | if ((p->arg = arg)) { | |
f84c484e | 659 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 660 | } |
fcf2db38 NIS |
661 | } |
662 | ||
3a1ee7e8 NIS |
663 | PerlIO_list_t * |
664 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
665 | { | |
b37c2d43 | 666 | PerlIO_list_t *list = NULL; |
694c95cf JH |
667 | if (proto) { |
668 | int i; | |
669 | list = PerlIO_list_alloc(aTHX); | |
670 | for (i=0; i < proto->cur; i++) { | |
a951d81d BL |
671 | SV *arg = proto->array[i].arg; |
672 | #ifdef sv_dup | |
673 | if (arg && param) | |
674 | arg = sv_dup(arg, param); | |
675 | #else | |
676 | PERL_UNUSED_ARG(param); | |
677 | #endif | |
694c95cf JH |
678 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
679 | } | |
3a1ee7e8 NIS |
680 | } |
681 | return list; | |
682 | } | |
4a4a6116 | 683 | |
05d1247b | 684 | void |
3a1ee7e8 | 685 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 686 | { |
3aaf42a7 | 687 | #ifdef USE_ITHREADS |
303f2dc3 DM |
688 | PerlIOl **table = &proto->Iperlio; |
689 | PerlIOl *f; | |
3a1ee7e8 NIS |
690 | PL_perlio = NULL; |
691 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
692 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 693 | PerlIO_init_table(aTHX); |
a25429c6 | 694 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
695 | while ((f = *table)) { |
696 | int i; | |
303f2dc3 | 697 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 698 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
699 | if (f->next) { |
700 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
701 | } |
702 | f++; | |
703 | } | |
704 | } | |
1b6737cc | 705 | #else |
a25429c6 | 706 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
707 | PERL_UNUSED_ARG(proto); |
708 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 709 | #endif |
9a6404c5 DM |
710 | } |
711 | ||
712 | void | |
13621cfb NIS |
713 | PerlIO_destruct(pTHX) |
714 | { | |
97aff369 | 715 | dVAR; |
303f2dc3 DM |
716 | PerlIOl **table = &PL_perlio; |
717 | PerlIOl *f; | |
694c95cf | 718 | #ifdef USE_ITHREADS |
a25429c6 | 719 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 720 | #endif |
14a5cf38 JH |
721 | while ((f = *table)) { |
722 | int i; | |
303f2dc3 | 723 | table = (PerlIOl **) (f++); |
14a5cf38 | 724 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 725 | PerlIO *x = &(f->next); |
dcda55fc | 726 | const PerlIOl *l; |
14a5cf38 | 727 | while ((l = *x)) { |
cc6623a8 | 728 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
729 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
730 | PerlIO_flush(x); | |
731 | PerlIO_pop(aTHX_ x); | |
732 | } | |
733 | else { | |
734 | x = PerlIONext(x); | |
735 | } | |
736 | } | |
737 | f++; | |
738 | } | |
739 | } | |
13621cfb NIS |
740 | } |
741 | ||
742 | void | |
a999f61b | 743 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 744 | { |
dcda55fc | 745 | const PerlIOl *l = *f; |
16865ff7 | 746 | VERIFY_HEAD(f); |
14a5cf38 | 747 | if (l) { |
cc6623a8 DM |
748 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
749 | l->tab ? l->tab->name : "(Null)"); | |
750 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
751 | /* |
752 | * If popped returns non-zero do not free its layer structure | |
753 | * it has either done so itself, or it is shared and still in | |
71200d45 | 754 | * use |
14a5cf38 | 755 | */ |
f62ce20a | 756 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
757 | return; |
758 | } | |
abf9167d DM |
759 | if (PerlIO_lockcnt(f)) { |
760 | /* we're in use; defer freeing the structure */ | |
761 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
762 | PerlIOBase(f)->tab = NULL; | |
763 | } | |
764 | else { | |
765 | *f = l->next; | |
766 | Safefree(l); | |
767 | } | |
768 | ||
a8c08ecd | 769 | } |
6f9d8c32 NIS |
770 | } |
771 | ||
39f7a870 JH |
772 | /* Return as an array the stack of layers on a filehandle. Note that |
773 | * the stack is returned top-first in the array, and there are three | |
774 | * times as many array elements as there are layers in the stack: the | |
775 | * first element of a layer triplet is the name, the second one is the | |
776 | * arguments, and the third one is the flags. */ | |
777 | ||
778 | AV * | |
779 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
780 | { | |
97aff369 | 781 | dVAR; |
dcda55fc | 782 | AV * const av = newAV(); |
39f7a870 | 783 | |
dcda55fc AL |
784 | if (PerlIOValid(f)) { |
785 | PerlIOl *l = PerlIOBase(f); | |
786 | ||
787 | while (l) { | |
92e45a3e NC |
788 | /* There is some collusion in the implementation of |
789 | XS_PerlIO_get_layers - it knows that name and flags are | |
790 | generated as fresh SVs here, and takes advantage of that to | |
791 | "copy" them by taking a reference. If it changes here, it needs | |
792 | to change there too. */ | |
dcda55fc AL |
793 | SV * const name = l->tab && l->tab->name ? |
794 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
795 | SV * const arg = l->tab && l->tab->Getarg ? | |
796 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
797 | av_push(av, name); | |
798 | av_push(av, arg); | |
799 | av_push(av, newSViv((IV)l->flags)); | |
800 | l = l->next; | |
801 | } | |
802 | } | |
39f7a870 | 803 | |
dcda55fc | 804 | return av; |
39f7a870 JH |
805 | } |
806 | ||
9e353e3b | 807 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 808 | /* |
71200d45 | 809 | * XS Interface for perl code |
14a5cf38 | 810 | */ |
9e353e3b | 811 | |
fcf2db38 | 812 | PerlIO_funcs * |
2edd7e44 | 813 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 814 | { |
27da23d5 | 815 | dVAR; |
14a5cf38 JH |
816 | IV i; |
817 | if ((SSize_t) len <= 0) | |
818 | len = strlen(name); | |
3a1ee7e8 | 819 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 820 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 821 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 822 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
823 | return f; |
824 | } | |
825 | } | |
3a1ee7e8 NIS |
826 | if (load && PL_subname && PL_def_layerlist |
827 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
828 | if (PL_in_load_module) { |
829 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
830 | return NULL; | |
831 | } else { | |
396482e1 | 832 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 833 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 834 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 835 | ENTER; |
4fa7c2bf | 836 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 837 | if (cv) { |
9cfa90c0 | 838 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 839 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 840 | } |
4fa7c2bf | 841 | PL_in_load_module = TRUE; |
d7a09b41 SR |
842 | /* |
843 | * The two SVs are magically freed by load_module | |
844 | */ | |
a0714e2c | 845 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
846 | LEAVE; |
847 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
848 | } | |
14a5cf38 JH |
849 | } |
850 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
851 | return NULL; | |
f3862f8b NIS |
852 | } |
853 | ||
2a1bc955 | 854 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
855 | |
856 | static int | |
857 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
858 | { | |
14a5cf38 | 859 | if (SvROK(sv)) { |
159b6efe | 860 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
861 | PerlIO * const ifp = IoIFP(io); |
862 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
863 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
864 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
865 | } |
866 | return 0; | |
b13b2135 NIS |
867 | } |
868 | ||
869 | static int | |
870 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
871 | { | |
14a5cf38 | 872 | if (SvROK(sv)) { |
159b6efe | 873 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
874 | PerlIO * const ifp = IoIFP(io); |
875 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
876 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
877 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
878 | } |
879 | return 0; | |
b13b2135 NIS |
880 | } |
881 | ||
882 | static int | |
883 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
884 | { | |
be2597df | 885 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 886 | return 0; |
b13b2135 NIS |
887 | } |
888 | ||
889 | static int | |
890 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
891 | { | |
be2597df | 892 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 893 | return 0; |
b13b2135 NIS |
894 | } |
895 | ||
896 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
897 | perlio_mg_get, |
898 | perlio_mg_set, | |
22569500 | 899 | NULL, /* len */ |
14a5cf38 JH |
900 | perlio_mg_clear, |
901 | perlio_mg_free | |
b13b2135 NIS |
902 | }; |
903 | ||
904 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
905 | { | |
14a5cf38 | 906 | dXSARGS; |
dcda55fc AL |
907 | SV * const sv = SvRV(ST(1)); |
908 | AV * const av = newAV(); | |
14a5cf38 JH |
909 | MAGIC *mg; |
910 | int count = 0; | |
911 | int i; | |
ad64d0ec | 912 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
913 | SvRMAGICAL_off(sv); |
914 | mg = mg_find(sv, PERL_MAGIC_ext); | |
915 | mg->mg_virtual = &perlio_vtab; | |
916 | mg_magical(sv); | |
be2597df | 917 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
918 | for (i = 2; i < items; i++) { |
919 | STRLEN len; | |
dcda55fc AL |
920 | const char * const name = SvPV_const(ST(i), len); |
921 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 922 | if (layer) { |
b37c2d43 | 923 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
924 | } |
925 | else { | |
926 | ST(count) = ST(i); | |
927 | count++; | |
928 | } | |
929 | } | |
930 | SvREFCNT_dec(av); | |
931 | XSRETURN(count); | |
932 | } | |
933 | ||
22569500 | 934 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 935 | |
e3f3bf95 NIS |
936 | SV * |
937 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 938 | { |
da51bb9b | 939 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 940 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 941 | return sv; |
e3f3bf95 NIS |
942 | } |
943 | ||
5ca1d77f | 944 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 945 | { |
486ec47a | 946 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
947 | during loading of layers. |
948 | */ | |
97aff369 | 949 | dVAR; |
c9bca74a | 950 | dXSARGS; |
58c0efa5 | 951 | PERL_UNUSED_ARG(cv); |
c9bca74a | 952 | if (items) |
e62f0680 | 953 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
954 | XSRETURN(0); |
955 | } | |
956 | ||
5ca1d77f | 957 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 958 | { |
97aff369 | 959 | dVAR; |
14a5cf38 | 960 | dXSARGS; |
58c0efa5 | 961 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
962 | if (items < 2) |
963 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
964 | else { | |
de009b76 | 965 | STRLEN len; |
46c461b5 | 966 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 967 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 968 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
969 | ST(0) = |
970 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
971 | &PL_sv_undef; | |
972 | XSRETURN(1); | |
973 | } | |
0c4f7ff0 NIS |
974 | } |
975 | ||
e3f3bf95 NIS |
976 | void |
977 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
978 | { | |
97aff369 | 979 | dVAR; |
3a1ee7e8 NIS |
980 | if (!PL_known_layers) |
981 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 982 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 983 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
984 | } |
985 | ||
1141d9f8 | 986 | int |
fcf2db38 | 987 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 988 | { |
97aff369 | 989 | dVAR; |
14a5cf38 JH |
990 | if (names) { |
991 | const char *s = names; | |
992 | while (*s) { | |
993 | while (isSPACE(*s) || *s == ':') | |
994 | s++; | |
995 | if (*s) { | |
996 | STRLEN llen = 0; | |
997 | const char *e = s; | |
bd61b366 | 998 | const char *as = NULL; |
14a5cf38 JH |
999 | STRLEN alen = 0; |
1000 | if (!isIDFIRST(*s)) { | |
1001 | /* | |
1002 | * Message is consistent with how attribute lists are | |
1003 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 1004 | * seen as an invalid separator character. |
14a5cf38 | 1005 | */ |
de009b76 | 1006 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
1007 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1008 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
1009 | q, *s, q, s); | |
93189314 | 1010 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1011 | return -1; |
1012 | } | |
1013 | do { | |
1014 | e++; | |
1015 | } while (isALNUM(*e)); | |
1016 | llen = e - s; | |
1017 | if (*e == '(') { | |
1018 | int nesting = 1; | |
1019 | as = ++e; | |
1020 | while (nesting) { | |
1021 | switch (*e++) { | |
1022 | case ')': | |
1023 | if (--nesting == 0) | |
1024 | alen = (e - 1) - as; | |
1025 | break; | |
1026 | case '(': | |
1027 | ++nesting; | |
1028 | break; | |
1029 | case '\\': | |
1030 | /* | |
1031 | * It's a nul terminated string, not allowed | |
1032 | * to \ the terminating null. Anything other | |
71200d45 | 1033 | * character is passed over. |
14a5cf38 JH |
1034 | */ |
1035 | if (*e++) { | |
1036 | break; | |
1037 | } | |
1038 | /* | |
71200d45 | 1039 | * Drop through |
14a5cf38 JH |
1040 | */ |
1041 | case '\0': | |
1042 | e--; | |
a2a5de95 NC |
1043 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1044 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
1045 | (int) (e - s), s); | |
14a5cf38 JH |
1046 | return -1; |
1047 | default: | |
1048 | /* | |
71200d45 | 1049 | * boring. |
14a5cf38 JH |
1050 | */ |
1051 | break; | |
1052 | } | |
1053 | } | |
1054 | } | |
1055 | if (e > s) { | |
46c461b5 | 1056 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1057 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1058 | if (layer) { | |
a951d81d BL |
1059 | SV *arg = NULL; |
1060 | if (as) | |
1061 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1062 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 1063 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 1064 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1065 | } |
1066 | else { | |
a2a5de95 NC |
1067 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
1068 | (int) llen, s); | |
14a5cf38 JH |
1069 | return -1; |
1070 | } | |
1071 | } | |
1072 | s = e; | |
1073 | } | |
1074 | } | |
1075 | } | |
1076 | return 0; | |
1141d9f8 NIS |
1077 | } |
1078 | ||
dfebf958 | 1079 | void |
fcf2db38 | 1080 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1081 | { |
97aff369 | 1082 | dVAR; |
27da23d5 | 1083 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1084 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1085 | tab = &PerlIO_crlf; |
846be114 | 1086 | #else |
6ce75a77 | 1087 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1088 | tab = &PerlIO_stdio; |
846be114 | 1089 | #endif |
14a5cf38 | 1090 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1091 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1092 | &PL_sv_undef); |
dfebf958 NIS |
1093 | } |
1094 | ||
e3f3bf95 | 1095 | SV * |
14a5cf38 | 1096 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1097 | { |
14a5cf38 | 1098 | return av->array[n].arg; |
e3f3bf95 NIS |
1099 | } |
1100 | ||
f3862f8b | 1101 | PerlIO_funcs * |
14a5cf38 | 1102 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1103 | { |
14a5cf38 JH |
1104 | if (n >= 0 && n < av->cur) { |
1105 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1106 | av->array[n].funcs->name); | |
1107 | return av->array[n].funcs; | |
1108 | } | |
1109 | if (!def) | |
1110 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1111 | return def; | |
e3f3bf95 NIS |
1112 | } |
1113 | ||
4ec2216f NIS |
1114 | IV |
1115 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1116 | { | |
8772537c AL |
1117 | PERL_UNUSED_ARG(mode); |
1118 | PERL_UNUSED_ARG(arg); | |
1119 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1120 | if (PerlIOValid(f)) { |
1121 | PerlIO_flush(f); | |
1122 | PerlIO_pop(aTHX_ f); | |
1123 | return 0; | |
1124 | } | |
1125 | return -1; | |
1126 | } | |
1127 | ||
27da23d5 | 1128 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1129 | sizeof(PerlIO_funcs), |
1130 | "pop", | |
1131 | 0, | |
1132 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1133 | PerlIOPop_pushed, | |
1134 | NULL, | |
c0888ace | 1135 | PerlIOBase_open, |
4ec2216f NIS |
1136 | NULL, |
1137 | NULL, | |
1138 | NULL, | |
1139 | NULL, | |
1140 | NULL, | |
1141 | NULL, | |
1142 | NULL, | |
1143 | NULL, | |
de009b76 AL |
1144 | NULL, |
1145 | NULL, | |
4ec2216f NIS |
1146 | NULL, /* flush */ |
1147 | NULL, /* fill */ | |
1148 | NULL, | |
1149 | NULL, | |
1150 | NULL, | |
1151 | NULL, | |
1152 | NULL, /* get_base */ | |
1153 | NULL, /* get_bufsiz */ | |
1154 | NULL, /* get_ptr */ | |
1155 | NULL, /* get_cnt */ | |
1156 | NULL, /* set_ptrcnt */ | |
1157 | }; | |
1158 | ||
fcf2db38 | 1159 | PerlIO_list_t * |
e3f3bf95 NIS |
1160 | PerlIO_default_layers(pTHX) |
1161 | { | |
97aff369 | 1162 | dVAR; |
3a1ee7e8 | 1163 | if (!PL_def_layerlist) { |
bd61b366 | 1164 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1165 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1166 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1167 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1168 | #if defined(WIN32) |
27da23d5 | 1169 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1170 | #if 0 |
14a5cf38 | 1171 | osLayer = &PerlIO_win32; |
0c4128ad | 1172 | #endif |
2f8118af | 1173 | #endif |
27da23d5 JH |
1174 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1175 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1176 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1177 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1178 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1179 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1180 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1181 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1182 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1183 | &PL_sv_undef); | |
1184 | if (s) { | |
3a1ee7e8 | 1185 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1186 | } |
1187 | else { | |
3a1ee7e8 | 1188 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1189 | } |
1141d9f8 | 1190 | } |
3a1ee7e8 NIS |
1191 | if (PL_def_layerlist->cur < 2) { |
1192 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1193 | } |
3a1ee7e8 | 1194 | return PL_def_layerlist; |
e3f3bf95 NIS |
1195 | } |
1196 | ||
0c4f7ff0 NIS |
1197 | void |
1198 | Perl_boot_core_PerlIO(pTHX) | |
1199 | { | |
1200 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1201 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1202 | __FILE__); | |
0c4f7ff0 | 1203 | #endif |
14a5cf38 | 1204 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1205 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1206 | } |
e3f3bf95 NIS |
1207 | |
1208 | PerlIO_funcs * | |
1209 | PerlIO_default_layer(pTHX_ I32 n) | |
1210 | { | |
97aff369 | 1211 | dVAR; |
46c461b5 | 1212 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1213 | if (n < 0) |
1214 | n += av->cur; | |
27da23d5 | 1215 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1216 | } |
1217 | ||
a999f61b NIS |
1218 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1219 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1220 | |
1221 | void | |
1141d9f8 | 1222 | PerlIO_stdstreams(pTHX) |
60382766 | 1223 | { |
97aff369 | 1224 | dVAR; |
a1ea730d | 1225 | if (!PL_perlio) { |
8995e67d | 1226 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1227 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1228 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1229 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1230 | } | |
60382766 NIS |
1231 | } |
1232 | ||
1233 | PerlIO * | |
27da23d5 | 1234 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1235 | { |
16865ff7 | 1236 | VERIFY_HEAD(f); |
2dc2558e | 1237 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1238 | Perl_croak( aTHX_ |
5cf96513 RB |
1239 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1240 | "PerlIO layer function table size", (UV)tab->fsize, | |
1241 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1242 | } |
1243 | if (tab->size) { | |
b464bac0 | 1244 | PerlIOl *l; |
2dc2558e | 1245 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1246 | Perl_croak( aTHX_ |
5cf96513 RB |
1247 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1248 | "PerlIO layer instance size", (UV)tab->size, | |
1249 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1250 | } |
1251 | /* Real layer with a data area */ | |
002e75cf JH |
1252 | if (f) { |
1253 | char *temp; | |
1254 | Newxz(temp, tab->size, char); | |
1255 | l = (PerlIOl*)temp; | |
1256 | if (l) { | |
1257 | l->next = *f; | |
1258 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1259 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1260 | *f = l; |
1261 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1262 | (void*)f, tab->name, | |
1263 | (mode) ? mode : "(Null)", (void*)arg); | |
1264 | if (*l->tab->Pushed && | |
1265 | (*l->tab->Pushed) | |
1266 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1267 | PerlIO_pop(aTHX_ f); | |
1268 | return NULL; | |
1269 | } | |
2dc2558e | 1270 | } |
002e75cf JH |
1271 | else |
1272 | return NULL; | |
2dc2558e NIS |
1273 | } |
1274 | } | |
1275 | else if (f) { | |
1276 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1277 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1278 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1279 | if (tab->Pushed && |
27da23d5 | 1280 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1281 | return NULL; |
14a5cf38 JH |
1282 | } |
1283 | } | |
1284 | return f; | |
60382766 NIS |
1285 | } |
1286 | ||
81fe74fb LT |
1287 | PerlIO * |
1288 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1289 | IV n, const char *mode, int fd, int imode, int perm, | |
1290 | PerlIO *old, int narg, SV **args) | |
1291 | { | |
1292 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1293 | if (tab && tab->Open) { | |
1294 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1295 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1296 | PerlIO_close(ret); |
1297 | return NULL; | |
1298 | } | |
1299 | return ret; | |
1300 | } | |
1301 | SETERRNO(EINVAL, LIB_INVARG); | |
1302 | return NULL; | |
1303 | } | |
1304 | ||
dfebf958 | 1305 | IV |
86e05cf2 NIS |
1306 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1307 | { | |
1308 | if (PerlIOValid(f)) { | |
1309 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1310 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1311 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1312 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1313 | } | |
1314 | else { | |
1315 | /* Not suitable - pop it */ | |
1316 | PerlIO_pop(aTHX_ f); | |
1317 | } | |
1318 | return 0; | |
1319 | } | |
1320 | return -1; | |
1321 | } | |
1322 | ||
1323 | IV | |
2dc2558e | 1324 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1325 | { |
8772537c AL |
1326 | PERL_UNUSED_ARG(mode); |
1327 | PERL_UNUSED_ARG(arg); | |
1328 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1329 | |
04892f78 | 1330 | if (PerlIOValid(f)) { |
86e05cf2 | 1331 | PerlIO *t; |
de009b76 | 1332 | const PerlIOl *l; |
14a5cf38 | 1333 | PerlIO_flush(f); |
86e05cf2 NIS |
1334 | /* |
1335 | * Strip all layers that are not suitable for a raw stream | |
1336 | */ | |
1337 | t = f; | |
1338 | while (t && (l = *t)) { | |
cc6623a8 | 1339 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1340 | /* Has a handler - normal case */ |
9d97e8b8 | 1341 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1342 | if (*t == l) { |
1343 | /* Layer still there - move down a layer */ | |
1344 | t = PerlIONext(t); | |
1345 | } | |
1346 | } | |
1347 | else { | |
1348 | return -1; | |
1349 | } | |
14a5cf38 JH |
1350 | } |
1351 | else { | |
86e05cf2 NIS |
1352 | /* No handler - pop it */ |
1353 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1354 | } |
1355 | } | |
86e05cf2 | 1356 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1357 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1358 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1359 | return 0; |
1360 | } | |
14a5cf38 JH |
1361 | } |
1362 | return -1; | |
dfebf958 NIS |
1363 | } |
1364 | ||
ac27b0f5 | 1365 | int |
14a5cf38 | 1366 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1367 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1368 | { |
14a5cf38 JH |
1369 | int code = 0; |
1370 | while (n < max) { | |
8772537c | 1371 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1372 | if (tab) { |
1373 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1374 | code = -1; | |
1375 | break; | |
1376 | } | |
1377 | } | |
1378 | n++; | |
1379 | } | |
1380 | return code; | |
e3f3bf95 NIS |
1381 | } |
1382 | ||
1383 | int | |
ac27b0f5 NIS |
1384 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1385 | { | |
14a5cf38 | 1386 | int code = 0; |
da0fccaa DG |
1387 | ENTER; |
1388 | save_scalar(PL_errgv); | |
53f1b6d2 | 1389 | if (f && names) { |
8772537c | 1390 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1391 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1392 | if (code == 0) { | |
d9dac8cd | 1393 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1394 | } |
3a1ee7e8 | 1395 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1396 | } |
da0fccaa | 1397 | LEAVE; |
14a5cf38 | 1398 | return code; |
ac27b0f5 NIS |
1399 | } |
1400 | ||
f3862f8b | 1401 | |
60382766 | 1402 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1403 | /* |
71200d45 | 1404 | * Given the abstraction above the public API functions |
14a5cf38 | 1405 | */ |
60382766 NIS |
1406 | |
1407 | int | |
f5b9d040 | 1408 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1409 | { |
68b5363f | 1410 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1411 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1412 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1413 | iotype, mode, (names) ? names : "(Null)"); |
1414 | ||
03c0554d NIS |
1415 | if (names) { |
1416 | /* Do not flush etc. if (e.g.) switching encodings. | |
1417 | if a pushed layer knows it needs to flush lower layers | |
1418 | (for example :unix which is never going to call them) | |
1419 | it can do the flush when it is pushed. | |
1420 | */ | |
1421 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1422 | } | |
1423 | else { | |
86e05cf2 | 1424 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1425 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1426 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1427 | O_BINARY so we can look for it in mode. | |
1428 | */ | |
1429 | if (!(mode & O_BINARY)) { | |
1430 | /* Text mode */ | |
86e05cf2 NIS |
1431 | /* FIXME?: Looking down the layer stack seems wrong, |
1432 | but is a way of reaching past (say) an encoding layer | |
1433 | to flip CRLF-ness of the layer(s) below | |
1434 | */ | |
03c0554d NIS |
1435 | while (*f) { |
1436 | /* Perhaps we should turn on bottom-most aware layer | |
1437 | e.g. Ilya's idea that UNIX TTY could serve | |
1438 | */ | |
cc6623a8 DM |
1439 | if (PerlIOBase(f)->tab && |
1440 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1441 | { | |
03c0554d NIS |
1442 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1443 | /* Not in text mode - flush any pending stuff and flip it */ | |
1444 | PerlIO_flush(f); | |
1445 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1446 | } | |
1447 | /* Only need to turn it on in one layer so we are done */ | |
1448 | return TRUE; | |
ed53a2bb | 1449 | } |
03c0554d | 1450 | f = PerlIONext(f); |
14a5cf38 | 1451 | } |
03c0554d NIS |
1452 | /* Not finding a CRLF aware layer presumably means we are binary |
1453 | which is not what was requested - so we failed | |
1454 | We _could_ push :crlf layer but so could caller | |
1455 | */ | |
1456 | return FALSE; | |
14a5cf38 | 1457 | } |
6ce75a77 | 1458 | #endif |
86e05cf2 NIS |
1459 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1460 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1461 | */ |
a0714e2c | 1462 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1463 | } |
f5b9d040 NIS |
1464 | } |
1465 | ||
f5b9d040 | 1466 | int |
e87a358a | 1467 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1468 | { |
37725cdc | 1469 | if (PerlIOValid(f)) { |
46c461b5 | 1470 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1471 | if (tab && tab->Close) |
1472 | return (*tab->Close)(aTHX_ f); | |
1473 | else | |
1474 | return PerlIOBase_close(aTHX_ f); | |
1475 | } | |
14a5cf38 | 1476 | else { |
93189314 | 1477 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1478 | return -1; |
1479 | } | |
76ced9ad NIS |
1480 | } |
1481 | ||
b931b1d9 | 1482 | int |
e87a358a | 1483 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1484 | { |
de009b76 | 1485 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1486 | while (PerlIOValid(f)) { |
1487 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1488 | if (PerlIO_lockcnt(f)) |
1489 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1490 | f = PerlIONext(f); | |
f6c77cf1 | 1491 | } |
14a5cf38 | 1492 | return code; |
b931b1d9 NIS |
1493 | } |
1494 | ||
b931b1d9 | 1495 | int |
e87a358a | 1496 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1497 | { |
97aff369 | 1498 | dVAR; |
b32dd47e | 1499 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1500 | } |
1501 | ||
1141d9f8 | 1502 | |
fcf2db38 | 1503 | static PerlIO_funcs * |
2edd7e44 NIS |
1504 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1505 | { | |
97aff369 | 1506 | dVAR; |
14a5cf38 | 1507 | /* |
71200d45 | 1508 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1509 | */ |
526fd1b4 | 1510 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1511 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1512 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1513 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1514 | if (!f) |
dcbac5bb | 1515 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1516 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1517 | return f; |
1518 | } | |
14a5cf38 JH |
1519 | |
1520 | /* | |
71200d45 | 1521 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1522 | */ |
1523 | switch (SvTYPE(sv)) { | |
1524 | case SVt_PVAV: | |
6a245ed1 | 1525 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1526 | case SVt_PVHV: |
6a245ed1 | 1527 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1528 | case SVt_PVCV: |
6a245ed1 | 1529 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1530 | case SVt_PVGV: |
6a245ed1 | 1531 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1532 | default: |
1533 | return NULL; | |
14a5cf38 | 1534 | } |
2edd7e44 NIS |
1535 | } |
1536 | ||
fcf2db38 | 1537 | PerlIO_list_t * |
14a5cf38 JH |
1538 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1539 | const char *mode, int narg, SV **args) | |
1540 | { | |
97aff369 | 1541 | dVAR; |
14a5cf38 JH |
1542 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1543 | int incdef = 1; | |
a1ea730d | 1544 | if (!PL_perlio) |
14a5cf38 JH |
1545 | PerlIO_stdstreams(aTHX); |
1546 | if (narg) { | |
dcda55fc | 1547 | SV * const arg = *args; |
14a5cf38 | 1548 | /* |
71200d45 NIS |
1549 | * If it is a reference but not an object see if we have a handler |
1550 | * for it | |
14a5cf38 JH |
1551 | */ |
1552 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1553 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1554 | if (handler) { |
3a1ee7e8 NIS |
1555 | def = PerlIO_list_alloc(aTHX); |
1556 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1557 | incdef = 0; |
1558 | } | |
1559 | /* | |
e934609f | 1560 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1561 | * something sensible else we will just stringfy and open |
71200d45 | 1562 | * resulting string. |
14a5cf38 JH |
1563 | */ |
1564 | } | |
1565 | } | |
9fe371da | 1566 | if (!layers || !*layers) |
11bcd5da | 1567 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1568 | if (layers && *layers) { |
1569 | PerlIO_list_t *av; | |
1570 | if (incdef) { | |
a951d81d | 1571 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1572 | } |
1573 | else { | |
1574 | av = def; | |
1575 | } | |
0cff2cf3 NIS |
1576 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1577 | return av; | |
1578 | } | |
1579 | else { | |
1580 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1581 | return NULL; |
0cff2cf3 | 1582 | } |
14a5cf38 JH |
1583 | } |
1584 | else { | |
1585 | if (incdef) | |
1586 | def->refcnt++; | |
1587 | return def; | |
1588 | } | |
ee518936 NIS |
1589 | } |
1590 | ||
1591 | PerlIO * | |
14a5cf38 JH |
1592 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1593 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1594 | { | |
97aff369 | 1595 | dVAR; |
14a5cf38 JH |
1596 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1597 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1598 | if (!layers || !*layers) |
11bcd5da | 1599 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1600 | if (layers && *layers) |
1601 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1602 | } | |
1603 | } | |
1604 | else { | |
de009b76 | 1605 | PerlIO_list_t *layera; |
14a5cf38 JH |
1606 | IV n; |
1607 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1608 | if (PerlIOValid(f)) { |
14a5cf38 | 1609 | /* |
71200d45 NIS |
1610 | * This is "reopen" - it is not tested as perl does not use it |
1611 | * yet | |
14a5cf38 JH |
1612 | */ |
1613 | PerlIOl *l = *f; | |
3a1ee7e8 | 1614 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1615 | while (l) { |
a951d81d | 1616 | SV *arg = NULL; |
cc6623a8 | 1617 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1618 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1619 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1620 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1621 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1622 | l = *PerlIONext(&l); |
1623 | } | |
1624 | } | |
1625 | else { | |
1626 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1627 | if (!layera) { |
1628 | return NULL; | |
1629 | } | |
14a5cf38 JH |
1630 | } |
1631 | /* | |
71200d45 | 1632 | * Start at "top" of layer stack |
14a5cf38 JH |
1633 | */ |
1634 | n = layera->cur - 1; | |
1635 | while (n >= 0) { | |
46c461b5 | 1636 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1637 | if (t && t->Open) { |
1638 | tab = t; | |
1639 | break; | |
1640 | } | |
1641 | n--; | |
1642 | } | |
1643 | if (tab) { | |
1644 | /* | |
71200d45 | 1645 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1646 | */ |
7cf31beb | 1647 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1648 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1649 | } |
14a5cf38 | 1650 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1651 | tab->name, layers ? layers : "(Null)", mode, fd, |
1652 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1653 | if (tab->Open) |
1654 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1655 | f, narg, args); | |
1656 | else { | |
1657 | SETERRNO(EINVAL, LIB_INVARG); | |
1658 | f = NULL; | |
1659 | } | |
14a5cf38 JH |
1660 | if (f) { |
1661 | if (n + 1 < layera->cur) { | |
1662 | /* | |
1663 | * More layers above the one that we used to open - | |
71200d45 | 1664 | * apply them now |
14a5cf38 | 1665 | */ |
d9dac8cd NIS |
1666 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1667 | /* If pushing layers fails close the file */ | |
1668 | PerlIO_close(f); | |
14a5cf38 JH |
1669 | f = NULL; |
1670 | } | |
1671 | } | |
1672 | } | |
1673 | } | |
3a1ee7e8 | 1674 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1675 | } |
1676 | return f; | |
ee518936 | 1677 | } |
b931b1d9 NIS |
1678 | |
1679 | ||
9e353e3b | 1680 | SSize_t |
e87a358a | 1681 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1682 | { |
7918f24d NC |
1683 | PERL_ARGS_ASSERT_PERLIO_READ; |
1684 | ||
b32dd47e | 1685 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1686 | } |
1687 | ||
313ca112 | 1688 | SSize_t |
e87a358a | 1689 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1690 | { |
7918f24d NC |
1691 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1692 | ||
b32dd47e | 1693 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1694 | } |
1695 | ||
9e353e3b | 1696 | SSize_t |
e87a358a | 1697 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1698 | { |
7918f24d NC |
1699 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1700 | ||
b32dd47e | 1701 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1702 | } |
1703 | ||
6f9d8c32 | 1704 | int |
e87a358a | 1705 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1706 | { |
b32dd47e | 1707 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1708 | } |
1709 | ||
9e353e3b | 1710 | Off_t |
e87a358a | 1711 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1712 | { |
b32dd47e | 1713 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1714 | } |
1715 | ||
6f9d8c32 | 1716 | int |
e87a358a | 1717 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1718 | { |
97aff369 | 1719 | dVAR; |
14a5cf38 JH |
1720 | if (f) { |
1721 | if (*f) { | |
de009b76 | 1722 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1723 | |
1724 | if (tab && tab->Flush) | |
f62ce20a | 1725 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1726 | else |
1727 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1728 | } |
1729 | else { | |
fe5a182c | 1730 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1731 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1732 | return -1; |
1733 | } | |
1734 | } | |
1735 | else { | |
1736 | /* | |
1737 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1738 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1739 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1740 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1741 | * decisions? --jhi |
14a5cf38 | 1742 | */ |
303f2dc3 DM |
1743 | PerlIOl **table = &PL_perlio; |
1744 | PerlIOl *ff; | |
14a5cf38 | 1745 | int code = 0; |
303f2dc3 | 1746 | while ((ff = *table)) { |
14a5cf38 | 1747 | int i; |
303f2dc3 | 1748 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1749 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1750 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1751 | code = -1; |
303f2dc3 | 1752 | ff++; |
14a5cf38 JH |
1753 | } |
1754 | } | |
1755 | return code; | |
1756 | } | |
760ac839 LW |
1757 | } |
1758 | ||
a9c883f6 | 1759 | void |
f62ce20a | 1760 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1761 | { |
97aff369 | 1762 | dVAR; |
303f2dc3 DM |
1763 | PerlIOl **table = &PL_perlio; |
1764 | PerlIOl *f; | |
14a5cf38 JH |
1765 | while ((f = *table)) { |
1766 | int i; | |
303f2dc3 | 1767 | table = (PerlIOl **) (f++); |
14a5cf38 | 1768 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1769 | if (f->next |
1770 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1771 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1772 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1773 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1774 | f++; |
1775 | } | |
a9c883f6 | 1776 | } |
a9c883f6 NIS |
1777 | } |
1778 | ||
06da4f11 | 1779 | int |
e87a358a | 1780 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1781 | { |
b32dd47e | 1782 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1783 | } |
1784 | ||
f3862f8b NIS |
1785 | int |
1786 | PerlIO_isutf8(PerlIO *f) | |
1787 | { | |
1b7a0411 JH |
1788 | if (PerlIOValid(f)) |
1789 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1790 | else | |
1791 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1792 | |
1b7a0411 | 1793 | return -1; |
f3862f8b NIS |
1794 | } |
1795 | ||
6f9d8c32 | 1796 | int |
e87a358a | 1797 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1798 | { |
b32dd47e | 1799 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1800 | } |
1801 | ||
9e353e3b | 1802 | int |
e87a358a | 1803 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1804 | { |
b32dd47e | 1805 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1806 | } |
1807 | ||
9e353e3b | 1808 | void |
e87a358a | 1809 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1810 | { |
b32dd47e | 1811 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1812 | } |
1813 | ||
9e353e3b | 1814 | void |
e87a358a | 1815 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1816 | { |
b32dd47e | 1817 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1818 | } |
1819 | ||
9e353e3b NIS |
1820 | int |
1821 | PerlIO_has_base(PerlIO *f) | |
1822 | { | |
1b7a0411 | 1823 | if (PerlIOValid(f)) { |
46c461b5 | 1824 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1825 | |
1826 | if (tab) | |
1827 | return (tab->Get_base != NULL); | |
1b7a0411 | 1828 | } |
1b7a0411 JH |
1829 | |
1830 | return 0; | |
760ac839 LW |
1831 | } |
1832 | ||
9e353e3b NIS |
1833 | int |
1834 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1835 | { |
d7dfc388 SK |
1836 | if (PerlIOValid(f)) { |
1837 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1838 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1839 | |
d7dfc388 SK |
1840 | if (tab) |
1841 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1842 | } |
14a5cf38 | 1843 | } |
1b7a0411 | 1844 | |
14a5cf38 | 1845 | return 0; |
9e353e3b NIS |
1846 | } |
1847 | ||
9e353e3b NIS |
1848 | int |
1849 | PerlIO_has_cntptr(PerlIO *f) | |
1850 | { | |
04892f78 | 1851 | if (PerlIOValid(f)) { |
46c461b5 | 1852 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1853 | |
1854 | if (tab) | |
1855 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1856 | } |
1b7a0411 | 1857 | |
14a5cf38 | 1858 | return 0; |
9e353e3b NIS |
1859 | } |
1860 | ||
9e353e3b NIS |
1861 | int |
1862 | PerlIO_canset_cnt(PerlIO *f) | |
1863 | { | |
04892f78 | 1864 | if (PerlIOValid(f)) { |
46c461b5 | 1865 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1866 | |
1867 | if (tab) | |
1868 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1869 | } |
1b7a0411 | 1870 | |
14a5cf38 | 1871 | return 0; |
760ac839 LW |
1872 | } |
1873 | ||
888911fc | 1874 | STDCHAR * |
e87a358a | 1875 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1876 | { |
b32dd47e | 1877 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1878 | } |
1879 | ||
9e353e3b | 1880 | int |
e87a358a | 1881 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1882 | { |
b32dd47e | 1883 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1884 | } |
1885 | ||
9e353e3b | 1886 | STDCHAR * |
e87a358a | 1887 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1888 | { |
b32dd47e | 1889 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1890 | } |
1891 | ||
05d1247b | 1892 | int |
e87a358a | 1893 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1894 | { |
b32dd47e | 1895 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1896 | } |
1897 | ||
9e353e3b | 1898 | void |
e87a358a | 1899 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1900 | { |
b32dd47e | 1901 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1902 | } |
1903 | ||
9e353e3b | 1904 | void |
e87a358a | 1905 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1906 | { |
b32dd47e | 1907 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1908 | } |
1909 | ||
4ec2216f | 1910 | |
9e353e3b | 1911 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1912 | /* |
71200d45 | 1913 | * utf8 and raw dummy layers |
14a5cf38 | 1914 | */ |
dfebf958 | 1915 | |
26fb694e | 1916 | IV |
2dc2558e | 1917 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1918 | { |
96a5add6 | 1919 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1920 | PERL_UNUSED_ARG(mode); |
1921 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1922 | if (PerlIOValid(f)) { |
cc6623a8 | 1923 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1924 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1925 | else | |
1926 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1927 | return 0; | |
1928 | } | |
1929 | return -1; | |
26fb694e NIS |
1930 | } |
1931 | ||
27da23d5 | 1932 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1933 | sizeof(PerlIO_funcs), |
14a5cf38 | 1934 | "utf8", |
2dc2558e | 1935 | 0, |
a778d1f5 | 1936 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1937 | PerlIOUtf8_pushed, |
1938 | NULL, | |
c0888ace | 1939 | PerlIOBase_open, |
14a5cf38 JH |
1940 | NULL, |
1941 | NULL, | |
1942 | NULL, | |
1943 | NULL, | |
1944 | NULL, | |
1945 | NULL, | |
1946 | NULL, | |
1947 | NULL, | |
de009b76 AL |
1948 | NULL, |
1949 | NULL, | |
22569500 NIS |
1950 | NULL, /* flush */ |
1951 | NULL, /* fill */ | |
14a5cf38 JH |
1952 | NULL, |
1953 | NULL, | |
1954 | NULL, | |
1955 | NULL, | |
22569500 NIS |
1956 | NULL, /* get_base */ |
1957 | NULL, /* get_bufsiz */ | |
1958 | NULL, /* get_ptr */ | |
1959 | NULL, /* get_cnt */ | |
1960 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1961 | }; |
1962 | ||
27da23d5 | 1963 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1964 | sizeof(PerlIO_funcs), |
14a5cf38 | 1965 | "bytes", |
2dc2558e | 1966 | 0, |
a778d1f5 | 1967 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1968 | PerlIOUtf8_pushed, |
1969 | NULL, | |
c0888ace | 1970 | PerlIOBase_open, |
14a5cf38 JH |
1971 | NULL, |
1972 | NULL, | |
1973 | NULL, | |
1974 | NULL, | |
1975 | NULL, | |
1976 | NULL, | |
1977 | NULL, | |
1978 | NULL, | |
de009b76 AL |
1979 | NULL, |
1980 | NULL, | |
22569500 NIS |
1981 | NULL, /* flush */ |
1982 | NULL, /* fill */ | |
14a5cf38 JH |
1983 | NULL, |
1984 | NULL, | |
1985 | NULL, | |
1986 | NULL, | |
22569500 NIS |
1987 | NULL, /* get_base */ |
1988 | NULL, /* get_bufsiz */ | |
1989 | NULL, /* get_ptr */ | |
1990 | NULL, /* get_cnt */ | |
1991 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1992 | }; |
1993 | ||
27da23d5 | 1994 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1995 | sizeof(PerlIO_funcs), |
14a5cf38 | 1996 | "raw", |
2dc2558e | 1997 | 0, |
14a5cf38 JH |
1998 | PERLIO_K_DUMMY, |
1999 | PerlIORaw_pushed, | |
2000 | PerlIOBase_popped, | |
ecfd0649 | 2001 | PerlIOBase_open, |
14a5cf38 JH |
2002 | NULL, |
2003 | NULL, | |
2004 | NULL, | |
2005 | NULL, | |
2006 | NULL, | |
2007 | NULL, | |
2008 | NULL, | |
2009 | NULL, | |
de009b76 AL |
2010 | NULL, |
2011 | NULL, | |
22569500 NIS |
2012 | NULL, /* flush */ |
2013 | NULL, /* fill */ | |
14a5cf38 JH |
2014 | NULL, |
2015 | NULL, | |
2016 | NULL, | |
2017 | NULL, | |
22569500 NIS |
2018 | NULL, /* get_base */ |
2019 | NULL, /* get_bufsiz */ | |
2020 | NULL, /* get_ptr */ | |
2021 | NULL, /* get_cnt */ | |
2022 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
2023 | }; |
2024 | /*--------------------------------------------------------------------------------------*/ | |
2025 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2026 | /* |
71200d45 | 2027 | * "Methods" of the "base class" |
14a5cf38 | 2028 | */ |
9e353e3b NIS |
2029 | |
2030 | IV | |
f62ce20a | 2031 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2032 | { |
04892f78 | 2033 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
2034 | } |
2035 | ||
f5b9d040 | 2036 | char * |
81428673 | 2037 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
2038 | { |
2039 | char *s = buf; | |
81428673 | 2040 | if (PerlIOValid(f)) { |
de009b76 | 2041 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2042 | if (flags & PERLIO_F_APPEND) { |
2043 | *s++ = 'a'; | |
2044 | if (flags & PERLIO_F_CANREAD) { | |
2045 | *s++ = '+'; | |
2046 | } | |
14a5cf38 | 2047 | } |
81428673 NIS |
2048 | else if (flags & PERLIO_F_CANREAD) { |
2049 | *s++ = 'r'; | |
2050 | if (flags & PERLIO_F_CANWRITE) | |
2051 | *s++ = '+'; | |
2052 | } | |
2053 | else if (flags & PERLIO_F_CANWRITE) { | |
2054 | *s++ = 'w'; | |
2055 | if (flags & PERLIO_F_CANREAD) { | |
2056 | *s++ = '+'; | |
2057 | } | |
14a5cf38 | 2058 | } |
35990314 | 2059 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2060 | if (!(flags & PERLIO_F_CRLF)) |
2061 | *s++ = 'b'; | |
5f1a76d0 | 2062 | #endif |
81428673 | 2063 | } |
14a5cf38 JH |
2064 | *s = '\0'; |
2065 | return buf; | |
f5b9d040 NIS |
2066 | } |
2067 | ||
81428673 | 2068 | |
76ced9ad | 2069 | IV |
2dc2558e | 2070 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2071 | { |
de009b76 | 2072 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2073 | PERL_UNUSED_CONTEXT; |
8772537c | 2074 | PERL_UNUSED_ARG(arg); |
de009b76 | 2075 | |
14a5cf38 JH |
2076 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2077 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 2078 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
2079 | l->flags |= PERLIO_F_FASTGETS; |
2080 | if (mode) { | |
3b6c1aba | 2081 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2082 | mode++; |
2083 | switch (*mode++) { | |
2084 | case 'r': | |
2085 | l->flags |= PERLIO_F_CANREAD; | |
2086 | break; | |
2087 | case 'a': | |
2088 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2089 | break; | |
2090 | case 'w': | |
2091 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2092 | break; | |
2093 | default: | |
93189314 | 2094 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2095 | return -1; |
2096 | } | |
2097 | while (*mode) { | |
2098 | switch (*mode++) { | |
2099 | case '+': | |
2100 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2101 | break; | |
2102 | case 'b': | |
2103 | l->flags &= ~PERLIO_F_CRLF; | |
2104 | break; | |
2105 | case 't': | |
2106 | l->flags |= PERLIO_F_CRLF; | |
2107 | break; | |
2108 | default: | |
93189314 | 2109 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2110 | return -1; |
2111 | } | |
2112 | } | |
2113 | } | |
2114 | else { | |
2115 | if (l->next) { | |
2116 | l->flags |= l->next->flags & | |
2117 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2118 | PERLIO_F_APPEND); | |
2119 | } | |
2120 | } | |
5e2ab84b | 2121 | #if 0 |
14a5cf38 | 2122 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2123 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2124 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2125 | #endif |
14a5cf38 | 2126 | return 0; |
76ced9ad NIS |
2127 | } |
2128 | ||
2129 | IV | |
f62ce20a | 2130 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2131 | { |
96a5add6 | 2132 | PERL_UNUSED_CONTEXT; |
8772537c | 2133 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2134 | return 0; |
760ac839 LW |
2135 | } |
2136 | ||
9e353e3b | 2137 | SSize_t |
f62ce20a | 2138 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2139 | { |
14a5cf38 | 2140 | /* |
71200d45 | 2141 | * Save the position as current head considers it |
14a5cf38 | 2142 | */ |
de009b76 | 2143 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2144 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2145 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2146 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2147 | } |
2148 | ||
f6c77cf1 | 2149 | SSize_t |
f62ce20a | 2150 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2151 | { |
14a5cf38 JH |
2152 | STDCHAR *buf = (STDCHAR *) vbuf; |
2153 | if (f) { | |
263df5f1 JH |
2154 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2155 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2156 | SETERRNO(EBADF, SS_IVCHAN); | |
2157 | return 0; | |
2158 | } | |
14a5cf38 | 2159 | while (count > 0) { |
93c2c2ec IZ |
2160 | get_cnt: |
2161 | { | |
14a5cf38 JH |
2162 | SSize_t avail = PerlIO_get_cnt(f); |
2163 | SSize_t take = 0; | |
2164 | if (avail > 0) | |
bb7a0f54 | 2165 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2166 | if (take > 0) { |
2167 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2168 | Copy(ptr, buf, take, STDCHAR); | |
2169 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2170 | count -= take; | |
2171 | buf += take; | |
93c2c2ec IZ |
2172 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2173 | goto get_cnt; | |
14a5cf38 JH |
2174 | } |
2175 | if (count > 0 && avail <= 0) { | |
2176 | if (PerlIO_fill(f) != 0) | |
2177 | break; | |
2178 | } | |
93c2c2ec | 2179 | } |
14a5cf38 JH |
2180 | } |
2181 | return (buf - (STDCHAR *) vbuf); | |
2182 | } | |
f6c77cf1 | 2183 | return 0; |
f6c77cf1 NIS |
2184 | } |
2185 | ||
9e353e3b | 2186 | IV |
f62ce20a | 2187 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2188 | { |
96a5add6 | 2189 | PERL_UNUSED_CONTEXT; |
8772537c | 2190 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2191 | return 0; |
9e353e3b NIS |
2192 | } |
2193 | ||
2194 | IV | |
f62ce20a | 2195 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2196 | { |
96a5add6 | 2197 | PERL_UNUSED_CONTEXT; |
8772537c | 2198 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2199 | return -1; |
06da4f11 NIS |
2200 | } |
2201 | ||
2202 | IV | |
f62ce20a | 2203 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2204 | { |
37725cdc NIS |
2205 | IV code = -1; |
2206 | if (PerlIOValid(f)) { | |
2207 | PerlIO *n = PerlIONext(f); | |
2208 | code = PerlIO_flush(f); | |
2209 | PerlIOBase(f)->flags &= | |
2210 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2211 | while (PerlIOValid(n)) { | |
de009b76 | 2212 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2213 | if (tab && tab->Close) { |
2214 | if ((*tab->Close)(aTHX_ n) != 0) | |
2215 | code = -1; | |
2216 | break; | |
2217 | } | |
2218 | else { | |
2219 | PerlIOBase(n)->flags &= | |
2220 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2221 | } | |
2222 | n = PerlIONext(n); | |
2223 | } | |
2224 | } | |
2225 | else { | |
2226 | SETERRNO(EBADF, SS_IVCHAN); | |
2227 | } | |
14a5cf38 | 2228 | return code; |
9e353e3b NIS |
2229 | } |
2230 | ||
2231 | IV | |
f62ce20a | 2232 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2233 | { |
96a5add6 | 2234 | PERL_UNUSED_CONTEXT; |
04892f78 | 2235 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2236 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2237 | } | |
2238 | return 1; | |
9e353e3b NIS |
2239 | } |
2240 | ||
2241 | IV | |
f62ce20a | 2242 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2243 | { |
96a5add6 | 2244 | PERL_UNUSED_CONTEXT; |
04892f78 | 2245 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2246 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2247 | } | |
2248 | return 1; | |
9e353e3b NIS |
2249 | } |
2250 | ||
2251 | void | |
f62ce20a | 2252 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2253 | { |
04892f78 | 2254 | if (PerlIOValid(f)) { |
dcda55fc | 2255 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2256 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2257 | if (PerlIOValid(n)) |
14a5cf38 JH |
2258 | PerlIO_clearerr(n); |
2259 | } | |
9e353e3b NIS |
2260 | } |
2261 | ||
2262 | void | |
f62ce20a | 2263 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2264 | { |
96a5add6 | 2265 | PERL_UNUSED_CONTEXT; |
04892f78 | 2266 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2267 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2268 | } | |
9e353e3b NIS |
2269 | } |
2270 | ||
93a8090d NIS |
2271 | SV * |
2272 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2273 | { | |
2274 | if (!arg) | |
a0714e2c | 2275 | return NULL; |
93a8090d NIS |
2276 | #ifdef sv_dup |
2277 | if (param) { | |
a951d81d BL |
2278 | arg = sv_dup(arg, param); |
2279 | SvREFCNT_inc_simple_void_NN(arg); | |
2280 | return arg; | |
93a8090d NIS |
2281 | } |
2282 | else { | |
2283 | return newSVsv(arg); | |
2284 | } | |
2285 | #else | |
1b6737cc | 2286 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2287 | return newSVsv(arg); |
2288 | #endif | |
2289 | } | |
2290 | ||
2291 | PerlIO * | |
ecdeb87c | 2292 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2293 | { |
1b6737cc | 2294 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2295 | if (PerlIOValid(nexto)) { |
de009b76 | 2296 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2297 | if (tab && tab->Dup) |
2298 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2299 | else | |
2300 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2301 | } |
2302 | if (f) { | |
dcda55fc | 2303 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2304 | SV *arg = NULL; |
93a8090d | 2305 | char buf[8]; |
fe5a182c | 2306 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2307 | self ? self->name : "(Null)", |
2308 | (void*)f, (void*)o, (void*)param); | |
2309 | if (self && self->Getarg) | |
210e727c | 2310 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2311 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2312 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2313 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
ef8d46e8 | 2314 | SvREFCNT_dec(arg); |
93a8090d NIS |
2315 | } |
2316 | return f; | |
2317 | } | |
2318 | ||
27da23d5 | 2319 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2320 | |
8b84d7dd | 2321 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2322 | static void |
2323 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2324 | dVAR; |
22c96fc1 | 2325 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2326 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2327 | int *new_array; |
2328 | ||
2329 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2330 | old_max, new_fd, new_max); | |
2331 | ||
2332 | if (new_fd < old_max) { | |
2333 | return; | |
2334 | } | |
2335 | ||
f4ae5be6 NC |
2336 | assert (new_max > new_fd); |
2337 | ||
eae082a0 JH |
2338 | /* Use plain realloc() since we need this memory to be really |
2339 | * global and visible to all the interpreters and/or threads. */ | |
2340 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2341 | |
2342 | if (!new_array) { | |
8b84d7dd | 2343 | #ifdef USE_ITHREADS |
6cb8cb21 | 2344 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2345 | #endif |
2346 | /* Can't use PerlIO to write as it allocates memory */ | |
2347 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2348 | PL_no_mem, strlen(PL_no_mem)); | |
2349 | my_exit(1); | |
2350 | } | |
2351 | ||
2352 | PL_perlio_fd_refcnt_size = new_max; | |
2353 | PL_perlio_fd_refcnt = new_array; | |
2354 | ||
95b63a38 JH |
2355 | PerlIO_debug("Zeroing %p, %d\n", |
2356 | (void*)(new_array + old_max), | |
2357 | new_max - old_max); | |
22c96fc1 NC |
2358 | |
2359 | Zero(new_array + old_max, new_max - old_max, int); | |
2360 | } | |
2361 | ||
2362 | ||
93a8090d NIS |
2363 | void |
2364 | PerlIO_init(pTHX) | |
2365 | { | |
8b84d7dd | 2366 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2367 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2368 | } |
2369 | ||
168d5872 NIS |
2370 | void |
2371 | PerlIOUnix_refcnt_inc(int fd) | |
2372 | { | |
27da23d5 | 2373 | dTHX; |
22c96fc1 | 2374 | if (fd >= 0) { |
97aff369 | 2375 | dVAR; |
22c96fc1 | 2376 | |
8b84d7dd | 2377 | #ifdef USE_ITHREADS |
6cb8cb21 | 2378 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2379 | #endif |
22c96fc1 NC |
2380 | if (fd >= PL_perlio_fd_refcnt_size) |
2381 | S_more_refcounted_fds(aTHX_ fd); | |
2382 | ||
27da23d5 | 2383 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2384 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2385 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2386 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2387 | fd, PL_perlio_fd_refcnt[fd]); | |
2388 | } | |
2389 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2390 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2391 | |
8b84d7dd | 2392 | #ifdef USE_ITHREADS |
6cb8cb21 | 2393 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2394 | #endif |
8b84d7dd | 2395 | } else { |
12605ff9 | 2396 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2397 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2398 | } |
2399 | } | |
2400 | ||
168d5872 NIS |
2401 | int |
2402 | PerlIOUnix_refcnt_dec(int fd) | |
2403 | { | |
27da23d5 | 2404 | dTHX; |
168d5872 | 2405 | int cnt = 0; |
22c96fc1 | 2406 | if (fd >= 0) { |
97aff369 | 2407 | dVAR; |
8b84d7dd | 2408 | #ifdef USE_ITHREADS |
6cb8cb21 | 2409 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2410 | #endif |
8b84d7dd | 2411 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2412 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
8b84d7dd RGS |
2413 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", |
2414 | fd, PL_perlio_fd_refcnt_size); | |
2415 | } | |
2416 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2417 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
8b84d7dd RGS |
2418 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", |
2419 | fd, PL_perlio_fd_refcnt[fd]); | |
2420 | } | |
27da23d5 | 2421 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2422 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2423 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2424 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2425 | #endif |
8b84d7dd | 2426 | } else { |
12605ff9 | 2427 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
8b84d7dd | 2428 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2429 | } |
2430 | return cnt; | |
2431 | } | |
2432 | ||
2e0cfa16 FC |
2433 | int |
2434 | PerlIOUnix_refcnt(int fd) | |
2435 | { | |
2436 | dTHX; | |
2437 | int cnt = 0; | |
2438 | if (fd >= 0) { | |
2439 | dVAR; | |
2440 | #ifdef USE_ITHREADS | |
2441 | MUTEX_LOCK(&PL_perlio_mutex); | |
2442 | #endif | |
2443 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2444 | /* diag_listed_as: refcnt: fd %d%s */ | |
2445 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2446 | fd, PL_perlio_fd_refcnt_size); | |
2447 | } | |
2448 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2449 | /* diag_listed_as: refcnt: fd %d%s */ | |
2450 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2451 | fd, PL_perlio_fd_refcnt[fd]); | |
2452 | } | |
2453 | cnt = PL_perlio_fd_refcnt[fd]; | |
2454 | #ifdef USE_ITHREADS | |
2455 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2456 | #endif | |
2457 | } else { | |
2458 | /* diag_listed_as: refcnt: fd %d%s */ | |
2459 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2460 | } | |
2461 | return cnt; | |
2462 | } | |
2463 | ||
694c95cf JH |
2464 | void |
2465 | PerlIO_cleanup(pTHX) | |
2466 | { | |
97aff369 | 2467 | dVAR; |
694c95cf JH |
2468 | int i; |
2469 | #ifdef USE_ITHREADS | |
a25429c6 | 2470 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2471 | #else |
2472 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2473 | #endif |
e47547a8 | 2474 | |
694c95cf JH |
2475 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2476 | for (i=0; i < 3; i++) | |
2477 | PerlIOUnix_refcnt_inc(i); | |
2478 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2479 | /* Restore STDIN..STDERR refcount */ | |
2480 | for (i=0; i < 3; i++) | |
2481 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2482 | |
2483 | if (PL_known_layers) { | |
2484 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2485 | PL_known_layers = NULL; | |
2486 | } | |
27da23d5 | 2487 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2488 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2489 | PL_def_layerlist = NULL; | |
2490 | } | |
6cb8cb21 RGS |
2491 | } |
2492 | ||
0934c9d9 | 2493 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2494 | { |
53d44271 | 2495 | dVAR; |
4f3da17a DM |
2496 | #if 0 |
2497 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2498 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2499 | being present (at least in win32) :-(. | |
2500 | Disable for now. | |
2501 | */ | |
6cb8cb21 RGS |
2502 | #ifdef DEBUGGING |
2503 | { | |
2504 | /* By now all filehandles should have been closed, so any | |
2505 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2506 | * errors. */ | |
77db880c JH |
2507 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2508 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2509 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2510 | int i; |
2511 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2512 | if (PL_perlio_fd_refcnt[i]) { |
2513 | const STRLEN len = | |
2514 | my_snprintf(buf, sizeof(buf), | |
2515 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2516 | i, PL_perlio_fd_refcnt[i]); | |
2517 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2518 | } | |
6cb8cb21 RGS |
2519 | } |
2520 | } | |
2521 | #endif | |
4f3da17a | 2522 | #endif |
eae082a0 JH |
2523 | /* Not bothering with PL_perlio_mutex since by now |
2524 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2525 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2526 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2527 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2528 | PL_perlio_fd_refcnt = NULL; |
2529 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2530 | } |
694c95cf JH |
2531 | } |
2532 | ||
9e353e3b | 2533 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2534 | /* |
71200d45 | 2535 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2536 | */ |
9e353e3b | 2537 | |
14a5cf38 | 2538 | typedef struct { |
22569500 NIS |
2539 | struct _PerlIO base; /* The generic part */ |
2540 | int fd; /* UNIX like file descriptor */ | |
2541 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2542 | } PerlIOUnix; |
2543 | ||
abf9167d DM |
2544 | static void |
2545 | S_lockcnt_dec(pTHX_ const void* f) | |
2546 | { | |
2547 | PerlIO_lockcnt((PerlIO*)f)--; | |
2548 | } | |
2549 | ||
2550 | ||
2551 | /* call the signal handler, and if that handler happens to clear | |
2552 | * this handle, free what we can and return true */ | |
2553 | ||
2554 | static bool | |
2555 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2556 | ENTER; | |
2557 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2558 | PerlIO_lockcnt(f)++; | |
2559 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2560 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2561 | LEAVE; | |
abf9167d | 2562 | return 0; |
be48bbe8 | 2563 | } |
abf9167d DM |
2564 | /* we've just run some perl-level code that could have done |
2565 | * anything, including closing the file or clearing this layer. | |
2566 | * If so, free any lower layers that have already been | |
2567 | * cleared, then return an error. */ | |
2568 | while (PerlIOValid(f) && | |
2569 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2570 | { | |
2571 | const PerlIOl *l = *f; | |
2572 | *f = l->next; | |
2573 | Safefree(l); | |
2574 | } | |
be48bbe8 | 2575 | LEAVE; |
abf9167d DM |
2576 | return 1; |
2577 | } | |
2578 | ||
6f9d8c32 | 2579 | int |
9e353e3b | 2580 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2581 | { |
14a5cf38 | 2582 | int oflags = -1; |
3b6c1aba | 2583 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2584 | mode++; |
2585 | switch (*mode) { | |
2586 | case 'r': | |
2587 | oflags = O_RDONLY; | |
2588 | if (*++mode == '+') { | |
2589 | oflags = O_RDWR; | |
2590 | mode++; | |
2591 | } | |
2592 | break; | |
2593 | ||
2594 | case 'w': | |
2595 | oflags = O_CREAT | O_TRUNC; | |
2596 | if (*++mode == '+') { | |
2597 | oflags |= O_RDWR; | |
2598 | mode++; | |
2599 | } | |
2600 | else | |
2601 | oflags |= O_WRONLY; | |
2602 | break; | |
2603 | ||
2604 | case 'a': | |
2605 | oflags = O_CREAT | O_APPEND; | |
2606 | if (*++mode == '+') { | |
2607 | oflags |= O_RDWR; | |
2608 | mode++; | |
2609 | } | |
2610 | else | |
2611 | oflags |= O_WRONLY; | |
2612 | break; | |
2613 | } | |
2614 | if (*mode == 'b') { | |
2615 | oflags |= O_BINARY; | |
2616 | oflags &= ~O_TEXT; | |
2617 | mode++; | |
2618 | } | |
2619 | else if (*mode == 't') { | |
2620 | oflags |= O_TEXT; | |
2621 | oflags &= ~O_BINARY; | |
2622 | mode++; | |
2623 | } | |
2624 | /* | |
71200d45 | 2625 | * Always open in binary mode |
14a5cf38 JH |
2626 | */ |
2627 | oflags |= O_BINARY; | |
2628 | if (*mode || oflags == -1) { | |
93189314 | 2629 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2630 | oflags = -1; |
2631 | } | |
2632 | return oflags; | |
9e353e3b NIS |
2633 | } |
2634 | ||
2635 | IV | |
f62ce20a | 2636 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2637 | { |
96a5add6 | 2638 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2639 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2640 | } |
2641 | ||
aa063c35 NIS |
2642 | static void |
2643 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2644 | { |
de009b76 | 2645 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2646 | #if defined(WIN32) |
aa063c35 NIS |
2647 | Stat_t st; |
2648 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2649 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2650 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2651 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2652 | } | |
aa063c35 NIS |
2653 | else { |
2654 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2655 | } | |
6caa5a9c NIS |
2656 | } |
2657 | #endif | |
aa063c35 NIS |
2658 | s->fd = fd; |
2659 | s->oflags = imode; | |
2660 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2661 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2662 | } |
2663 | ||
2664 | IV | |
2665 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2666 | { | |
2667 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2668 | if (*PerlIONext(f)) { |
4b069b44 | 2669 | /* We never call down so do any pending stuff now */ |
03c0554d | 2670 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2671 | /* |
71200d45 | 2672 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2673 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2674 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2675 | */ |
acbd16bf | 2676 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2677 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2678 | } |
2679 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2680 | |
14a5cf38 | 2681 | return code; |
4b803d04 NIS |
2682 | } |
2683 | ||
c2fcde81 JH |
2684 | IV |
2685 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2686 | { | |
de009b76 | 2687 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2688 | Off_t new_loc; |
96a5add6 | 2689 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2690 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2691 | #ifdef ESPIPE | |
2692 | SETERRNO(ESPIPE, LIB_INVARG); | |
2693 | #else | |
2694 | SETERRNO(EINVAL, LIB_INVARG); | |
2695 | #endif | |
2696 | return -1; | |
2697 | } | |
0723351e NC |
2698 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2699 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2700 | return -1; |
c2fcde81 JH |
2701 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2702 | return 0; | |
2703 | } | |
2704 | ||
9e353e3b | 2705 | PerlIO * |
14a5cf38 JH |
2706 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2707 | IV n, const char *mode, int fd, int imode, | |
2708 | int perm, PerlIO *f, int narg, SV **args) | |
2709 | { | |
d9dac8cd | 2710 | if (PerlIOValid(f)) { |
cc6623a8 | 2711 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2712 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2713 | } |
2714 | if (narg > 0) { | |
3b6c1aba | 2715 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2716 | mode++; |
2717 | else { | |
2718 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2719 | #ifdef VMS |
2720 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2721 | #else | |
14a5cf38 | 2722 | perm = 0666; |
5e2ce0f3 | 2723 | #endif |
14a5cf38 JH |
2724 | } |
2725 | if (imode != -1) { | |
e62f0680 | 2726 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2727 | fd = PerlLIO_open3(path, imode, perm); |
2728 | } | |
2729 | } | |
2730 | if (fd >= 0) { | |
3b6c1aba | 2731 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2732 | mode++; |
2733 | if (!f) { | |
2734 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2735 | } |
2736 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2737 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2738 | return NULL; | |
2739 | } | |
d9dac8cd | 2740 | } |
aa063c35 | 2741 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2742 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2743 | if (*mode == IoTYPE_APPEND) |
2744 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2745 | return f; |
2746 | } | |
2747 | else { | |
2748 | if (f) { | |
6f207bd3 | 2749 | NOOP; |
14a5cf38 | 2750 | /* |
71200d45 | 2751 | * FIXME: pop layers ??? |
14a5cf38 JH |
2752 | */ |
2753 | } | |
2754 | return NULL; | |
2755 | } | |
9e353e3b NIS |
2756 | } |
2757 | ||
71200d45 | 2758 | PerlIO * |
ecdeb87c | 2759 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2760 | { |
dcda55fc | 2761 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2762 | int fd = os->fd; |
ecdeb87c NIS |
2763 | if (flags & PERLIO_DUP_FD) { |
2764 | fd = PerlLIO_dup(fd); | |
2765 | } | |
22c96fc1 | 2766 | if (fd >= 0) { |
ecdeb87c | 2767 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2768 | if (f) { |
2769 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2770 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2771 | return f; |
2772 | } | |
71200d45 NIS |
2773 | } |
2774 | return NULL; | |
2775 | } | |
2776 | ||
2777 | ||
9e353e3b | 2778 | SSize_t |
f62ce20a | 2779 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2780 | { |
97aff369 | 2781 | dVAR; |
abf9167d DM |
2782 | int fd; |
2783 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2784 | return -1; | |
2785 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2786 | #ifdef PERLIO_STD_SPECIAL |
2787 | if (fd == 0) | |
2788 | return PERLIO_STD_IN(fd, vbuf, count); | |
2789 | #endif | |
81428673 | 2790 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2791 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2792 | return 0; |
1fd8f4ce | 2793 | } |
14a5cf38 | 2794 | while (1) { |
b464bac0 | 2795 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2796 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2797 | if (len < 0) { |
2798 | if (errno != EAGAIN) { | |
2799 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2800 | } | |
2801 | } | |
2802 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2803 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2804 | SETERRNO(0,0); |
2805 | } | |
14a5cf38 JH |
2806 | return len; |
2807 | } | |
abf9167d DM |
2808 | /* EINTR */ |
2809 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2810 | return -1; | |
14a5cf38 | 2811 | } |
b464bac0 | 2812 | /*NOTREACHED*/ |
9e353e3b NIS |
2813 | } |
2814 | ||
2815 | SSize_t | |
f62ce20a | 2816 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2817 | { |
97aff369 | 2818 | dVAR; |
abf9167d DM |
2819 | int fd; |
2820 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2821 | return -1; | |
2822 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2823 | #ifdef PERLIO_STD_SPECIAL |
2824 | if (fd == 1 || fd == 2) | |
2825 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2826 | #endif | |
14a5cf38 | 2827 | while (1) { |
de009b76 | 2828 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2829 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2830 | if (len < 0) { |
2831 | if (errno != EAGAIN) { | |
2832 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2833 | } | |
2834 | } | |
14a5cf38 JH |
2835 | return len; |
2836 | } | |
abf9167d DM |
2837 | /* EINTR */ |
2838 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2839 | return -1; | |
06da4f11 | 2840 | } |
1b6737cc | 2841 | /*NOTREACHED*/ |
9e353e3b NIS |
2842 | } |
2843 | ||
9e353e3b | 2844 | Off_t |
f62ce20a | 2845 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2846 | { |
96a5add6 AL |
2847 | PERL_UNUSED_CONTEXT; |
2848 | ||
14a5cf38 | 2849 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2850 | } |
2851 | ||
2556f95e GF |
2852 | |
2853 | IV | |
2376d97d | 2854 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2855 | { |
97aff369 | 2856 | dVAR; |
de009b76 | 2857 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2858 | int code = 0; |
168d5872 NIS |
2859 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2860 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2861 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2862 | return 0; | |
22569500 | 2863 | } |
93a8090d NIS |
2864 | } |
2865 | else { | |
93189314 | 2866 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2867 | return -1; |
2868 | } | |
14a5cf38 JH |
2869 | while (PerlLIO_close(fd) != 0) { |
2870 | if (errno != EINTR) { | |
2871 | code = -1; | |
2872 | break; | |
2873 | } | |
abf9167d DM |
2874 | /* EINTR */ |
2875 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2876 | return -1; | |
14a5cf38 JH |
2877 | } |
2878 | if (code == 0) { | |
2879 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2880 | } | |
2881 | return code; | |
9e353e3b NIS |
2882 | } |
2883 | ||
27da23d5 | 2884 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2885 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2886 | "unix", |
2887 | sizeof(PerlIOUnix), | |
2888 | PERLIO_K_RAW, | |
2889 | PerlIOUnix_pushed, | |
2376d97d | 2890 | PerlIOBase_popped, |
14a5cf38 | 2891 | PerlIOUnix_open, |
86e05cf2 | 2892 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2893 | NULL, |
2894 | PerlIOUnix_fileno, | |
71200d45 | 2895 | PerlIOUnix_dup, |
14a5cf38 JH |
2896 | PerlIOUnix_read, |
2897 | PerlIOBase_unread, | |
2898 | PerlIOUnix_write, | |
2899 | PerlIOUnix_seek, | |
2900 | PerlIOUnix_tell, | |
2901 | PerlIOUnix_close, | |
22569500 NIS |
2902 | PerlIOBase_noop_ok, /* flush */ |
2903 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2904 | PerlIOBase_eof, |
2905 | PerlIOBase_error, | |
2906 | PerlIOBase_clearerr, | |
2907 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2908 | NULL, /* get_base */ |
2909 | NULL, /* get_bufsiz */ | |
2910 | NULL, /* get_ptr */ | |
2911 | NULL, /* get_cnt */ | |
2912 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2913 | }; |
2914 | ||
2915 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2916 | /* |
71200d45 | 2917 | * stdio as a layer |
14a5cf38 | 2918 | */ |
9e353e3b | 2919 | |
313e59c8 NIS |
2920 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2921 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2922 | broken by the last second glibc 2.3 fix | |
2923 | */ | |
2924 | #define STDIO_BUFFER_WRITABLE | |
2925 | #endif | |
2926 | ||
2927 | ||
14a5cf38 JH |
2928 | typedef struct { |
2929 | struct _PerlIO base; | |
22569500 | 2930 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2931 | } PerlIOStdio; |
2932 | ||
2933 | IV | |
f62ce20a | 2934 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2935 | { |
96a5add6 AL |
2936 | PERL_UNUSED_CONTEXT; |
2937 | ||
c4420975 AL |
2938 | if (PerlIOValid(f)) { |
2939 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2940 | if (s) | |
2941 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2942 | } |
2943 | errno = EBADF; | |
2944 | return -1; | |
9e353e3b NIS |
2945 | } |
2946 | ||
766a733e | 2947 | char * |
14a5cf38 JH |
2948 | PerlIOStdio_mode(const char *mode, char *tmode) |
2949 | { | |
de009b76 | 2950 | char * const ret = tmode; |
a0625d38 SR |
2951 | if (mode) { |
2952 | while (*mode) { | |
2953 | *tmode++ = *mode++; | |
2954 | } | |
14a5cf38 | 2955 | } |
95005ad8 | 2956 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2957 | *tmode++ = 'b'; |
2958 | #endif | |
14a5cf38 JH |
2959 | *tmode = '\0'; |
2960 | return ret; | |
2961 | } | |
2962 | ||
4b803d04 | 2963 | IV |
2dc2558e | 2964 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2965 | { |
1fd8f4ce NIS |
2966 | PerlIO *n; |
2967 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2968 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2969 | if (toptab == tab) { |
2970 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2971 | PerlIO_pop(aTHX_ f); | |
2972 | return 0; | |
2973 | } else { | |
de009b76 | 2974 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2975 | char tmode[8]; |
2976 | FILE *stdio; | |
81428673 | 2977 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2978 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2979 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2980 | /* We never call down so do any pending stuff now */ | |
2981 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2982 | } |
1fd8f4ce NIS |
2983 | else { |
2984 | return -1; | |
2985 | } | |
2986 | } | |
14a5cf38 | 2987 | } |
2dc2558e | 2988 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2989 | } |
2990 | ||
22569500 | 2991 | |
9e353e3b | 2992 | PerlIO * |
4b069b44 | 2993 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2994 | { |
14a5cf38 JH |
2995 | dTHX; |
2996 | PerlIO *f = NULL; | |
2997 | if (stdio) { | |
22569500 | 2998 | PerlIOStdio *s; |
4b069b44 NIS |
2999 | if (!mode || !*mode) { |
3000 | /* We need to probe to see how we can open the stream | |
3001 | so start with read/write and then try write and read | |
3002 | we dup() so that we can fclose without loosing the fd. | |
3003 | ||
3004 | Note that the errno value set by a failing fdopen | |
3005 | varies between stdio implementations. | |
3006 | */ | |
de009b76 | 3007 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 3008 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 3009 | if (!f2) { |
a33cf58c | 3010 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
3011 | } |
3012 | if (!f2) { | |
a33cf58c | 3013 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
3014 | } |
3015 | if (!f2) { | |
3016 | /* Don't seem to be able to open */ | |
3017 | PerlLIO_close(fd); | |
3018 | return f; | |
3019 | } | |
3020 | fclose(f2); | |
22569500 | 3021 | } |
a0714e2c | 3022 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
3023 | s = PerlIOSelf(f, PerlIOStdio); |
3024 | s->stdio = stdio; | |
c586124f | 3025 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 3026 | } |
14a5cf38 JH |
3027 | } |
3028 | return f; | |
9e353e3b NIS |
3029 | } |
3030 | ||
3031 | PerlIO * | |
14a5cf38 JH |
3032 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3033 | IV n, const char *mode, int fd, int imode, | |
3034 | int perm, PerlIO *f, int narg, SV **args) | |
3035 | { | |
3036 | char tmode[8]; | |
d9dac8cd | 3037 | if (PerlIOValid(f)) { |
dcda55fc AL |
3038 | const char * const path = SvPV_nolen_const(*args); |
3039 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
3040 | FILE *stdio; |
3041 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
3042 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
3043 | s->stdio); |
3044 | if (!s->stdio) | |
3045 | return NULL; | |
3046 | s->stdio = stdio; | |
1751d015 | 3047 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3048 | return f; |
3049 | } | |
3050 | else { | |
3051 | if (narg > 0) { | |
dcda55fc | 3052 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 3053 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3054 | mode++; |
3055 | fd = PerlLIO_open3(path, imode, perm); | |
3056 | } | |
3057 | else { | |
95005ad8 GH |
3058 | FILE *stdio; |
3059 | bool appended = FALSE; | |
3060 | #ifdef __CYGWIN__ | |
3061 | /* Cygwin wants its 'b' early. */ | |
3062 | appended = TRUE; | |
3063 | mode = PerlIOStdio_mode(mode, tmode); | |
3064 | #endif | |
3065 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3066 | if (stdio) { |
6f0313ac JH |
3067 | if (!f) { |
3068 | f = PerlIO_allocate(aTHX); | |
3069 | } | |
95005ad8 GH |
3070 | if (!appended) |
3071 | mode = PerlIOStdio_mode(mode, tmode); | |
3072 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3073 | if (f) { | |
0f0f9e2b JH |
3074 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3075 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3076 | } else { | |
3077 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3078 | } |
3079 | return f; | |
3080 | } | |
3081 | else { | |
3082 | return NULL; | |
3083 | } | |
14a5cf38 JH |
3084 | } |
3085 | } | |
3086 | if (fd >= 0) { | |
3087 | FILE *stdio = NULL; | |
3088 | int init = 0; | |
3b6c1aba | 3089 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3090 | init = 1; |
3091 | mode++; | |
3092 | } | |
3093 | if (init) { | |
3094 | switch (fd) { | |
3095 | case 0: | |
3096 | stdio = PerlSIO_stdin; | |
3097 | break; | |
3098 | case 1: | |
3099 | stdio = PerlSIO_stdout; | |
3100 | break; | |
3101 | case 2: | |
3102 | stdio = PerlSIO_stderr; | |
3103 | break; | |
3104 | } | |
3105 | } | |
3106 | else { | |
3107 | stdio = PerlSIO_fdopen(fd, mode = | |
3108 | PerlIOStdio_mode(mode, tmode)); | |
3109 | } | |
3110 | if (stdio) { | |
d9dac8cd NIS |
3111 | if (!f) { |
3112 | f = PerlIO_allocate(aTHX); | |
3113 | } | |
a33cf58c | 3114 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3115 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3116 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3117 | } |
14a5cf38 JH |
3118 | return f; |
3119 | } | |
3120 | } | |
3121 | } | |
ee518936 | 3122 | return NULL; |
9e353e3b NIS |
3123 | } |
3124 | ||
1751d015 | 3125 | PerlIO * |
ecdeb87c | 3126 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3127 | { |
3128 | /* This assumes no layers underneath - which is what | |
3129 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3130 | */ | |
ecdeb87c | 3131 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3132 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3133 | const int fd = fileno(stdio); |
9217ff3f | 3134 | char mode[8]; |
ecdeb87c | 3135 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3136 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3137 | if (dfd >= 0) { |
3138 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3139 | goto set_this; | |
ecdeb87c NIS |
3140 | } |
3141 | else { | |
6f207bd3 | 3142 | NOOP; |
ecdeb87c NIS |
3143 | /* FIXME: To avoid messy error recovery if dup fails |
3144 | re-use the existing stdio as though flag was not set | |
3145 | */ | |
3146 | } | |
3147 | } | |
9217ff3f NIS |
3148 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3149 | set_this: | |
694c95cf | 3150 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3151 | if(stdio) { |
3152 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3153 | } | |
1751d015 NIS |
3154 | } |
3155 | return f; | |
3156 | } | |
3157 | ||
0d7a5398 NIS |
3158 | static int |
3159 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3160 | { | |
96a5add6 AL |
3161 | PERL_UNUSED_CONTEXT; |
3162 | ||
0d7a5398 | 3163 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3164 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3165 | */ |
ef8eacb8 AT |
3166 | # if defined(__UCLIBC__) |
3167 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3168 | f->__filedes = -1; | |
3169 | return 1; | |
3170 | # elif defined(__GLIBC__) | |
0d7a5398 | 3171 | /* There may be a better way for GLIBC: |
37725cdc | 3172 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3173 | */ |
3174 | f->_fileno = -1; | |
3175 | return 1; | |
3176 | # elif defined(__sun__) | |
f5992bc4 | 3177 | PERL_UNUSED_ARG(f); |
cfedb851 | 3178 | return 0; |
0d7a5398 NIS |
3179 | # elif defined(__hpux) |
3180 | f->__fileH = 0xff; | |
3181 | f->__fileL = 0xff; | |
3182 | return 1; | |
9837d373 | 3183 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3184 | your platform does not have special entry try this one. |
9837d373 NIS |
3185 | [For OSF only have confirmation for Tru64 (alpha) |
3186 | but assume other OSFs will be similar.] | |
37725cdc | 3187 | */ |
9837d373 | 3188 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3189 | f->_file = -1; |
3190 | return 1; | |
3191 | # elif defined(__FreeBSD__) | |
3192 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3193 | - we could insert a dummy func in the _close function entry |
3194 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3195 | */ |
3196 | f->_file = -1; | |
0c49ea6a SU |
3197 | return 1; |
3198 | # elif defined(__OpenBSD__) | |
3199 | /* There may be a better way on OpenBSD: | |
3200 | - we could insert a dummy func in the _close function entry | |
3201 | f->_close = (int (*)(void *)) dummy_close; | |
3202 | */ | |
3203 | f->_file = -1; | |
0d7a5398 | 3204 | return 1; |
59ad941d IZ |
3205 | # elif defined(__EMX__) |
3206 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3207 | f->_handle = -1; | |
3208 | return 1; | |
0d7a5398 NIS |
3209 | # elif defined(__CYGWIN__) |
3210 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3211 | - we could insert a dummy func in the _close function entry |
3212 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3213 | */ |
3214 | f->_file = -1; | |
3215 | return 1; | |
3216 | # elif defined(WIN32) | |
378eeda7 | 3217 | # if defined(UNDER_CE) |
b475b3e6 JH |
3218 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3219 | structure at all | |
3220 | */ | |
0d7a5398 NIS |
3221 | # else |
3222 | f->_file = -1; | |
3223 | # endif | |
3224 | return 1; | |
3225 | # else | |
3226 | #if 0 | |
37725cdc | 3227 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3228 | (which isn't thread safe) instead |
37725cdc | 3229 | */ |
0d7a5398 NIS |
3230 | # error "Don't know how to set FILE.fileno on your platform" |
3231 | #endif | |
8772537c | 3232 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3233 | return 0; |
3234 | # endif | |
3235 | } | |
3236 | ||
1751d015 | 3237 | IV |
f62ce20a | 3238 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3239 | { |
c4420975 | 3240 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3241 | if (!stdio) { |
3242 | errno = EBADF; | |
3243 | return -1; | |
3244 | } | |
9217ff3f | 3245 | else { |
de009b76 | 3246 | const int fd = fileno(stdio); |
0d7a5398 | 3247 | int invalidate = 0; |
bbfd922f | 3248 | IV result = 0; |
1d791a44 | 3249 | int dupfd = -1; |
4ee39169 | 3250 | dSAVEDERRNO; |
a2e578da MHM |
3251 | #ifdef USE_ITHREADS |
3252 | dVAR; | |
3253 | #endif | |
0d7a5398 | 3254 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3255 | /* Socks lib overrides close() but stdio isn't linked to |
3256 | that library (though we are) - so we must call close() | |
3257 | on sockets on stdio's behalf. | |
3258 | */ | |
0d7a5398 NIS |
3259 | int optval; |
3260 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3261 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3262 | invalidate = 1; |
0d7a5398 | 3263 | #endif |
d8723f43 NC |
3264 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3265 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3266 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3267 | trying to close an already closed handle which somehow it still has | |
3268 | a reference to. (via.xs, I'm looking at you). */ | |
3269 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3270 | /* File descriptor still in use */ | |
0d7a5398 | 3271 | invalidate = 1; |
d8723f43 | 3272 | } |
0d7a5398 | 3273 | if (invalidate) { |
6b4ce6c8 AL |
3274 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3275 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3276 | return 0; | |
3277 | if (stdio == stdout || stdio == stderr) | |
3278 | return PerlIO_flush(f); | |
37725cdc NIS |
3279 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3280 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3281 | fileno slot of the FILE * | |
3282 | */ | |
bbfd922f | 3283 | result = PerlIO_flush(f); |
4ee39169 | 3284 | SAVE_ERRNO; |
6b4ce6c8 | 3285 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3286 | if (!invalidate) { |
9bab90c0 NC |
3287 | #ifdef USE_ITHREADS |
3288 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3289 | /* Right. We need a mutex here because for a brief while we |
3290 | will have the situation that fd is actually closed. Hence if | |
3291 | a second thread were to get into this block, its dup() would | |
3292 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3293 | Then if we get to the dup2() first, we blat the fd back |
3294 | (messing up its temporary as a side effect) only for it to | |
3295 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3296 | ||
3297 | /* There is, of course, a race condition, that any other thread | |
3298 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3299 | for the duration of this little manoeuvrer. Perhaps we |
3300 | should hold an IO mutex for the duration of every IO | |
3301 | operation if we know that invalidate doesn't work on this | |
3302 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3303 | |
3304 | Except that correctness trumps speed. | |
3305 | Advice from klortho #11912. */ | |
3306 | #endif | |
6b4ce6c8 | 3307 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3308 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3309 | if (dupfd < 0) { |
3310 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3311 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3312 | recover from here, or if closing this particular FILE * | |
3313 | is a good idea now. */ | |
3314 | } | |
3315 | #endif | |
3316 | } | |
94ccb807 JH |
3317 | } else { |
3318 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3319 | } |
0d7a5398 | 3320 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3321 | /* We treat error from stdio as success if we invalidated |
3322 | errno may NOT be expected EBADF | |
e8529473 NIS |
3323 | */ |
3324 | if (invalidate && result != 0) { | |
4ee39169 | 3325 | RESTORE_ERRNO; |
0d7a5398 | 3326 | result = 0; |
37725cdc | 3327 | } |
6b4ce6c8 AL |
3328 | #ifdef SOCKS5_VERSION_NAME |
3329 | /* in SOCKS' case, let close() determine return value */ | |
3330 | result = close(fd); | |
3331 | #endif | |
1d791a44 | 3332 | if (dupfd >= 0) { |
0d7a5398 | 3333 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3334 | PerlLIO_close(dupfd); |
711e8db2 | 3335 | #ifdef USE_ITHREADS |
9bab90c0 | 3336 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3337 | #endif |
9217ff3f NIS |
3338 | } |
3339 | return result; | |
37725cdc | 3340 | } |
1751d015 NIS |
3341 | } |
3342 | ||
9e353e3b | 3343 | SSize_t |
f62ce20a | 3344 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3345 | { |
97aff369 | 3346 | dVAR; |
abf9167d | 3347 | FILE * s; |
14a5cf38 | 3348 | SSize_t got = 0; |
abf9167d DM |
3349 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3350 | return -1; | |
3351 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3352 | for (;;) { |
3353 | if (count == 1) { | |
3354 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3355 | /* | |
3356 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3357 | * stdio does not do that for fread() | |
3358 | */ | |
de009b76 | 3359 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3360 | if (ch != EOF) { |
3361 | *buf = ch; | |
3362 | got = 1; | |
3363 | } | |
14a5cf38 | 3364 | } |
4d948241 NIS |
3365 | else |
3366 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3367 | if (got == 0 && PerlSIO_ferror(s)) |
3368 | got = -1; | |
42a7a32f | 3369 | if (got >= 0 || errno != EINTR) |
4d948241 | 3370 | break; |
abf9167d DM |
3371 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3372 | return -1; | |
42a7a32f | 3373 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3374 | } |
14a5cf38 | 3375 | return got; |
9e353e3b NIS |
3376 | } |
3377 | ||
3378 | SSize_t | |
f62ce20a | 3379 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3380 | { |
14a5cf38 | 3381 | SSize_t unread = 0; |
c4420975 | 3382 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3383 | |
313e59c8 | 3384 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3385 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3386 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3387 | STDCHAR *base = PerlIO_get_base(f); | |
3388 | SSize_t cnt = PerlIO_get_cnt(f); | |
3389 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3390 | SSize_t avail = ptr - base; | |
3391 | if (avail > 0) { | |
3392 | if (avail > count) { | |
3393 | avail = count; | |
3394 | } | |
3395 | ptr -= avail; | |
3396 | Move(buf-avail,ptr,avail,STDCHAR); | |
3397 | count -= avail; | |
3398 | unread += avail; | |
3399 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3400 | if (PerlSIO_feof(s) && unread >= 0) |
3401 | PerlSIO_clearerr(s); | |
3402 | } | |
3403 | } | |
313e59c8 NIS |
3404 | else |
3405 | #endif | |
3406 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3407 | /* We can get pointer to buffer but not its base |
3408 | Do ungetc() but check chars are ending up in the | |
3409 | buffer | |
3410 | */ | |
3411 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3412 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3413 | while (count > 0) { | |
de009b76 | 3414 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3415 | if (ungetc(ch,s) != ch) { |
3416 | /* ungetc did not work */ | |
3417 | break; | |
3418 | } | |
3419 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3420 | /* Did not change pointer as expected */ | |
3421 | fgetc(s); /* get char back again */ | |
3422 | break; | |
3423 | } | |
3424 | /* It worked ! */ | |
3425 | count--; | |
3426 | unread++; | |
93679785 NIS |
3427 | } |
3428 | } | |
3429 | ||
3430 | if (count > 0) { | |
3431 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3432 | } |
3433 | return unread; | |
9e353e3b NIS |
3434 | } |
3435 | ||
3436 | SSize_t | |
f62ce20a | 3437 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3438 | { |
97aff369 | 3439 | dVAR; |
4d948241 | 3440 | SSize_t got; |
abf9167d DM |
3441 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3442 | return -1; | |
4d948241 NIS |
3443 | for (;;) { |
3444 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3445 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3446 | if (got >= 0 || errno != EINTR) |
4d948241 | 3447 | break; |
abf9167d DM |
3448 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3449 | return -1; | |
42a7a32f | 3450 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3451 | } |
3452 | return got; | |
9e353e3b NIS |
3453 | } |
3454 | ||
94a175e1 | 3455 | IV |
f62ce20a | 3456 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3457 | { |
c4420975 | 3458 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3459 | PERL_UNUSED_CONTEXT; |
3460 | ||
94a175e1 | 3461 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3462 | } |
3463 | ||
3464 | Off_t | |
f62ce20a | 3465 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3466 | { |
c4420975 | 3467 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3468 | PERL_UNUSED_CONTEXT; |
3469 | ||
94a175e1 | 3470 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3471 | } |
3472 | ||
3473 | IV | |
f62ce20a | 3474 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3475 | { |
c4420975 | 3476 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3477 | PERL_UNUSED_CONTEXT; |
3478 | ||
14a5cf38 JH |
3479 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3480 | return PerlSIO_fflush(stdio); | |
3481 | } | |
3482 | else { | |
6f207bd3 | 3483 | NOOP; |
88b61e10 | 3484 | #if 0 |
14a5cf38 JH |
3485 | /* |
3486 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3487 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3488 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3489 | * layer read-to-read |
14a5cf38 JH |
3490 | */ |
3491 | /* | |
71200d45 | 3492 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3493 | */ |
4ee39169 | 3494 | dSAVE_ERRNO; |
14a5cf38 | 3495 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3496 | RESTORE_ERRNO; |
88b61e10 | 3497 | #endif |
14a5cf38 JH |
3498 | } |
3499 | return 0; | |
9e353e3b NIS |
3500 | } |
3501 | ||
3502 | IV | |
f62ce20a | 3503 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3504 | { |
96a5add6 AL |
3505 | PERL_UNUSED_CONTEXT; |
3506 | ||
14a5cf38 | 3507 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3508 | } |
3509 | ||
3510 | IV | |
f62ce20a | 3511 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3512 | { |
96a5add6 AL |
3513 | PERL_UNUSED_CONTEXT; |
3514 | ||
263df5f1 | 3515 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3516 | } |
3517 | ||
3518 | void | |
f62ce20a | 3519 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3520 | { |
96a5add6 AL |
3521 | PERL_UNUSED_CONTEXT; |
3522 | ||
14a5cf38 | 3523 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3524 | } |
3525 | ||
3526 | void | |
f62ce20a | 3527 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3528 | { |
96a5add6 AL |
3529 | PERL_UNUSED_CONTEXT; |
3530 | ||
9e353e3b | 3531 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3532 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3533 | #else |
bd61b366 | 3534 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3535 | #endif |
3536 | } | |
3537 | ||
3538 | #ifdef FILE_base | |
3539 | STDCHAR * | |
f62ce20a | 3540 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3541 | { |
c4420975 | 3542 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3543 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3544 | } |
3545 | ||
3546 | Size_t | |
f62ce20a | 3547 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3548 | { |
c4420975 | 3549 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3550 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3551 | } |
3552 | #endif | |
3553 | ||
3554 | #ifdef USE_STDIO_PTR | |
3555 | STDCHAR * | |
f62ce20a | 3556 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3557 | { |
c4420975 | 3558 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3559 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3560 | } |
3561 | ||
3562 | SSize_t | |
f62ce20a | 3563 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3564 | { |
c4420975 | 3565 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3566 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3567 | } |
3568 | ||
3569 | void | |
f62ce20a | 3570 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3571 | { |
c4420975 | 3572 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3573 | if (ptr != NULL) { |
9e353e3b | 3574 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3575 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3576 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3577 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3578 | #endif |
3579 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3580 | /* |
71200d45 | 3581 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3582 | */ |
3583 | return; | |
9e353e3b | 3584 | #endif |
22569500 | 3585 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3586 | PerlProc_abort(); |
22569500 | 3587 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3588 | } |
3589 | /* | |
71200d45 | 3590 | * Now (or only) set cnt |
14a5cf38 | 3591 | */ |
9e353e3b | 3592 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3593 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3594 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3595 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3596 | PerlSIO_set_ptr(stdio, |
3597 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3598 | cnt)); | |
22569500 | 3599 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3600 | PerlProc_abort(); |
22569500 NIS |
3601 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3602 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3603 | } |
3604 | ||
93679785 | 3605 | |
9e353e3b NIS |
3606 | #endif |
3607 | ||
93679785 NIS |
3608 | IV |
3609 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3610 | { | |
abf9167d | 3611 | FILE * stdio; |
93679785 | 3612 | int c; |
96a5add6 | 3613 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3614 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3615 | return -1; | |
3616 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3617 | |
93679785 NIS |
3618 | /* |
3619 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3620 | */ | |
3621 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3622 | if (PerlSIO_fflush(stdio) != 0) | |
3623 | return EOF; | |
3624 | } | |
f3be3723 BL |
3625 | for (;;) { |
3626 | c = PerlSIO_fgetc(stdio); | |
3627 | if (c != EOF) | |
3628 | break; | |
3629 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3630 | return EOF; | |
abf9167d DM |
3631 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3632 | return -1; | |
f3be3723 BL |
3633 | SETERRNO(0,0); |
3634 | } | |
93679785 NIS |
3635 | |
3636 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3637 | |
3638 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3639 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3640 | /* Fake ungetc() to the real buffer in case system's ungetc |
3641 | goes elsewhere | |
3642 | */ | |
3643 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3644 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3645 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3646 | if (ptr == base+1) { | |
3647 | *--ptr = (STDCHAR) c; | |
3648 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3649 | if (PerlSIO_feof(stdio)) | |
3650 | PerlSIO_clearerr(stdio); | |
3651 | return 0; | |
3652 | } | |
3653 | } | |
313e59c8 NIS |
3654 | else |
3655 | #endif | |
3656 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3657 | STDCHAR ch = c; |
3658 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3659 | return 0; | |
3660 | } | |
3661 | } | |
93679785 NIS |
3662 | #endif |
3663 | ||
3664 | #if defined(VMS) | |
3665 | /* An ungetc()d char is handled separately from the regular | |
3666 | * buffer, so we stuff it in the buffer ourselves. | |
3667 | * Should never get called as should hit code above | |
3668 | */ | |
bad9695d NIS |
3669 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3670 | (*stdio)->_cnt++; | |
93679785 NIS |
3671 | #else |
3672 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3673 | using ungetc(). |
93679785 NIS |
3674 | */ |
3675 | if (PerlSIO_ungetc(c, stdio) != c) | |
3676 | return EOF; | |
3677 | #endif | |
3678 | return 0; | |
3679 | } | |
3680 | ||
3681 | ||
3682 | ||
27da23d5 | 3683 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3684 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3685 | "stdio", |
3686 | sizeof(PerlIOStdio), | |
86e05cf2 | 3687 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3688 | PerlIOStdio_pushed, |
2376d97d | 3689 | PerlIOBase_popped, |
14a5cf38 | 3690 | PerlIOStdio_open, |
86e05cf2 | 3691 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3692 | NULL, |
3693 | PerlIOStdio_fileno, | |
71200d45 | 3694 | PerlIOStdio_dup, |
14a5cf38 JH |
3695 | PerlIOStdio_read, |
3696 | PerlIOStdio_unread, | |
3697 | PerlIOStdio_write, | |
3698 | PerlIOStdio_seek, | |
3699 | PerlIOStdio_tell, | |
3700 | PerlIOStdio_close, | |
3701 | PerlIOStdio_flush, | |
3702 | PerlIOStdio_fill, | |
3703 | PerlIOStdio_eof, | |
3704 | PerlIOStdio_error, | |
3705 | PerlIOStdio_clearerr, | |
3706 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3707 | #ifdef FILE_base |
14a5cf38 JH |
3708 | PerlIOStdio_get_base, |
3709 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3710 | #else |
14a5cf38 JH |
3711 | NULL, |
3712 | NULL, | |
9e353e3b NIS |
3713 | #endif |
3714 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3715 | PerlIOStdio_get_ptr, |
3716 | PerlIOStdio_get_cnt, | |
15b61c98 | 3717 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3718 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3719 | # else |
3720 | NULL, | |
3721 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3722 | #else | |
3723 | NULL, | |
14a5cf38 JH |
3724 | NULL, |
3725 | NULL, | |
15b61c98 | 3726 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3727 | }; |
3728 | ||
b9d6bf13 JH |
3729 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3730 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3731 | FILE * |
81428673 | 3732 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3733 | { |
e87a358a | 3734 | dTHX; |
81428673 NIS |
3735 | FILE *stdio = NULL; |
3736 | if (PerlIOValid(f)) { | |
3737 | char buf[8]; | |
3738 | PerlIO_flush(f); | |
3739 | if (!mode || !*mode) { | |
3740 | mode = PerlIO_modestr(f, buf); | |
3741 | } | |
3742 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3743 | if (stdio) { | |
3744 | PerlIOl *l = *f; | |
9f75cc58 | 3745 | PerlIO *f2; |
81428673 NIS |
3746 | /* De-link any lower layers so new :stdio sticks */ |
3747 | *f = NULL; | |
a0714e2c | 3748 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3749 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3750 | s->stdio = stdio; |
6b54a403 | 3751 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3752 | /* Link previous lower layers under new one */ |
3753 | *PerlIONext(f) = l; | |
3754 | } | |
3755 | else { | |
3756 | /* restore layers list */ | |
3757 | *f = l; | |
3758 | } | |
a33cf58c | 3759 | } |
14a5cf38 JH |
3760 | } |
3761 | return stdio; | |
9e353e3b NIS |
3762 | } |
3763 | ||
81428673 | 3764 | |
9e353e3b NIS |
3765 | FILE * |
3766 | PerlIO_findFILE(PerlIO *f) | |
3767 | { | |
14a5cf38 | 3768 | PerlIOl *l = *f; |
bbbc33d0 | 3769 | FILE *stdio; |
14a5cf38 JH |
3770 | while (l) { |
3771 | if (l->tab == &PerlIO_stdio) { | |
3772 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3773 | return s->stdio; | |
3774 | } | |
3775 | l = *PerlIONext(&l); | |
f7e7eb72 | 3776 | } |
4b069b44 | 3777 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3778 | /* However, we're not really exporting a FILE * to someone else (who |
3779 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3780 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3781 | descriptor. We have to do this, because if the loop above returns you |
3782 | the FILE *, then *it* didn't increase any reference count. So there's | |
3783 | only one way to be consistent. */ | |
3784 | stdio = PerlIO_exportFILE(f, NULL); | |
3785 | if (stdio) { | |
3786 | const int fd = fileno(stdio); | |
3787 | if (fd >= 0) | |
3788 | PerlIOUnix_refcnt_dec(fd); | |
3789 | } | |
3790 | return stdio; | |
9e353e3b NIS |
3791 | } |
3792 | ||
b9d6bf13 | 3793 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3794 | void |
3795 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3796 | { | |
27da23d5 | 3797 | dVAR; |
22569500 NIS |
3798 | PerlIOl *l; |
3799 | while ((l = *p)) { | |
3800 | if (l->tab == &PerlIO_stdio) { | |
3801 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3802 | if (s->stdio == f) { | |
3803 | dTHX; | |
6b54a403 NC |
3804 | const int fd = fileno(f); |
3805 | if (fd >= 0) | |
3806 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3807 | PerlIO_pop(aTHX_ p); |
3808 | return; | |
3809 | } | |
3810 | } | |
3811 | p = PerlIONext(p); | |
3812 | } | |
3813 | return; | |
9e353e3b NIS |
3814 | } |
3815 | ||
3816 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3817 | /* |
71200d45 | 3818 | * perlio buffer layer |
14a5cf38 | 3819 | */ |
9e353e3b | 3820 | |
5e2ab84b | 3821 | IV |
2dc2558e | 3822 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3823 | { |
14a5cf38 | 3824 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3825 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3826 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3827 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3828 | } | |
4b069b44 | 3829 | if (*PerlIONext(f)) { |
de009b76 | 3830 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3831 | if (posn != (Off_t) - 1) { |
3832 | b->posn = posn; | |
3833 | } | |
14a5cf38 | 3834 | } |
2dc2558e | 3835 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3836 | } |
3837 | ||
9e353e3b | 3838 | PerlIO * |
14a5cf38 JH |
3839 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3840 | IV n, const char *mode, int fd, int imode, int perm, | |
3841 | PerlIO *f, int narg, SV **args) | |
3842 | { | |
04892f78 | 3843 | if (PerlIOValid(f)) { |
14a5cf38 | 3844 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3845 | PerlIO_funcs *tab = |
3846 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3847 | if (tab && tab->Open) | |
3848 | next = | |
3849 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3850 | next, narg, args); | |
2dc2558e | 3851 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3852 | return NULL; |
3853 | } | |
3854 | } | |
3855 | else { | |
04892f78 | 3856 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3857 | int init = 0; |
3b6c1aba | 3858 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3859 | init = 1; |
3860 | /* | |
71200d45 | 3861 | * mode++; |
14a5cf38 JH |
3862 | */ |
3863 | } | |
67363c0d JH |
3864 | if (tab && tab->Open) |
3865 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3866 | f, narg, args); | |
3867 | else | |
3868 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3869 | if (f) { |
22569500 | 3870 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3871 | /* |
3872 | * if push fails during open, open fails. close will pop us. | |
3873 | */ | |
3874 | PerlIO_close (f); | |
3875 | return NULL; | |
3876 | } else { | |
3877 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3878 | if (init && fd == 2) { |
3879 | /* | |
3880 | * Initial stderr is unbuffered | |
3881 | */ | |
3882 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3883 | } | |
23b84778 IZ |
3884 | #ifdef PERLIO_USING_CRLF |
3885 | # ifdef PERLIO_IS_BINMODE_FD | |
3886 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3887 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3888 | else |
3889 | # endif | |
3890 | /* | |
3891 | * do something about failing setmode()? --jhi | |
3892 | */ | |
3893 | PerlLIO_setmode(fd, O_BINARY); | |
3894 | #endif | |
8c8488cd CB |
3895 | #ifdef VMS |
3896 | #include <rms.h> | |
3897 | /* Enable line buffering with record-oriented regular files | |
3898 | * so we don't introduce an extraneous record boundary when | |
3899 | * the buffer fills up. | |
3900 | */ | |
3901 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3902 | Stat_t st; | |
3903 | if (PerlLIO_fstat(fd, &st) == 0 | |
3904 | && S_ISREG(st.st_mode) | |
3905 | && (st.st_fab_rfm == FAB$C_VAR | |
3906 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3907 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3908 | } | |
3909 | } | |
3910 | #endif | |
14a5cf38 JH |
3911 | } |
3912 | } | |
ee518936 | 3913 | } |
14a5cf38 | 3914 | return f; |
9e353e3b NIS |
3915 | } |
3916 | ||
14a5cf38 JH |
3917 | /* |
3918 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3919 | * read or write state. For write state, we put the postponed data through |
3920 | * the next layers. For read state, we seek() the next layers to the | |
3921 | * offset given by current position in the buffer, and discard the buffer | |
3922 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3923 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3924 | */ |
9e353e3b | 3925 | IV |
f62ce20a | 3926 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3927 | { |
dcda55fc | 3928 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3929 | int code = 0; |
04892f78 | 3930 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3931 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3932 | /* | |
71200d45 | 3933 | * write() the buffer |
14a5cf38 | 3934 | */ |
de009b76 AL |
3935 | const STDCHAR *buf = b->buf; |
3936 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3937 | while (p < b->ptr) { |
3938 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3939 | if (count > 0) { | |
3940 | p += count; | |
3941 | } | |
3942 | else if (count < 0 || PerlIO_error(n)) { | |
3943 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3944 | code = -1; | |
3945 | break; | |
3946 | } | |
3947 | } | |
3948 | b->posn += (p - buf); | |
3949 | } | |
3950 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3951 | STDCHAR *buf = PerlIO_get_base(f); | |
3952 | /* | |
71200d45 | 3953 | * Note position change |
14a5cf38 JH |
3954 | */ |
3955 | b->posn += (b->ptr - buf); | |
3956 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3957 | /* We did not consume all of it - try and seek downstream to |
3958 | our logical position | |
14a5cf38 | 3959 | */ |
4b069b44 | 3960 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3961 | /* Reload n as some layers may pop themselves on seek */ |
3962 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3963 | } |
ba5c3fe9 | 3964 | else { |
4b069b44 NIS |
3965 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3966 | data is lost for good - so return saying "ok" having undone | |
3967 | the position adjust | |
3968 | */ | |
3969 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3970 | return code; |
3971 | } | |
14a5cf38 JH |
3972 | } |
3973 | } | |
3974 | b->ptr = b->end = b->buf; | |
3975 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3976 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3977 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3978 | code = -1; |
3979 | return code; | |
6f9d8c32 NIS |
3980 | } |
3981 | ||
93c2c2ec IZ |
3982 | /* This discards the content of the buffer after b->ptr, and rereads |
3983 | * the buffer from the position off in the layer downstream; here off | |
3984 | * is at offset corresponding to b->ptr - b->buf. | |
3985 | */ | |
06da4f11 | 3986 | IV |
f62ce20a | 3987 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3988 | { |
dcda55fc | 3989 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3990 | PerlIO *n = PerlIONext(f); |
3991 | SSize_t avail; | |
3992 | /* | |
4b069b44 NIS |
3993 | * Down-stream flush is defined not to loose read data so is harmless. |
3994 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3995 | */ |
93c2c2ec | 3996 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3997 | return -1; |
3998 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3999 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
4000 | |
4001 | if (!b->buf) | |
22569500 | 4002 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 4003 | |
0f0eef27 | 4004 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4005 | |
14a5cf38 | 4006 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4007 | |
4008 | if (!PerlIOValid(n)) { | |
4009 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4010 | return -1; | |
4011 | } | |
4012 | ||
14a5cf38 JH |
4013 | if (PerlIO_fast_gets(n)) { |
4014 | /* | |
04892f78 | 4015 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4016 | * ->Read() because that will loop till it gets what we asked for |
4017 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4018 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4019 | */ |
4020 | avail = PerlIO_get_cnt(n); | |
4021 | if (avail <= 0) { | |
4022 | avail = PerlIO_fill(n); | |
4023 | if (avail == 0) | |
4024 | avail = PerlIO_get_cnt(n); | |
4025 | else { | |
4026 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4027 | avail = 0; | |
4028 | } | |
4029 | } | |
4030 | if (avail > 0) { | |
4031 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4032 | const SSize_t cnt = avail; |
eb160463 | 4033 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4034 | avail = b->bufsiz; |
4035 | Copy(ptr, b->buf, avail, STDCHAR); | |
4036 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4037 | } | |
4038 | } | |
4039 | else { | |
4040 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4041 | } | |
4042 | if (avail <= 0) { | |
4043 | if (avail == 0) | |
4044 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4045 | else | |
4046 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
4047 | return -1; | |
4048 | } | |
4049 | b->end = b->buf + avail; | |
4050 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4051 | return 0; | |
06da4f11 NIS |
4052 | } |
4053 | ||
6f9d8c32 | 4054 | SSize_t |
f62ce20a | 4055 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4056 | { |
04892f78 | 4057 | if (PerlIOValid(f)) { |
dcda55fc | 4058 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4059 | if (!b->ptr) |
4060 | PerlIO_get_base(f); | |
f62ce20a | 4061 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4062 | } |
4063 | return 0; | |
6f9d8c32 NIS |
4064 | } |
4065 | ||
9e353e3b | 4066 | SSize_t |
f62ce20a | 4067 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4068 | { |
14a5cf38 | 4069 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4070 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4071 | SSize_t unread = 0; |
4072 | SSize_t avail; | |
4073 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4074 | PerlIO_flush(f); | |
4075 | if (!b->buf) | |
4076 | PerlIO_get_base(f); | |
4077 | if (b->buf) { | |
4078 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4079 | /* | |
4080 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4081 | * which have been read back to buffer start |
14a5cf38 JH |
4082 | */ |
4083 | avail = (b->ptr - b->buf); | |
4084 | } | |
4085 | else { | |
4086 | /* | |
4087 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4088 | * unread |
14a5cf38 JH |
4089 | */ |
4090 | avail = b->bufsiz; | |
4091 | b->end = b->buf + avail; | |
4092 | b->ptr = b->end; | |
4093 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4094 | /* | |
71200d45 | 4095 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4096 | */ |
4097 | b->posn -= b->bufsiz; | |
4098 | } | |
4099 | if (avail > (SSize_t) count) { | |
4100 | /* | |
71200d45 | 4101 | * If we have space for more than count, just move count |
14a5cf38 JH |
4102 | */ |
4103 | avail = count; | |
4104 | } | |
4105 | if (avail > 0) { | |
4106 | b->ptr -= avail; | |
4107 | buf -= avail; | |
4108 | /* | |
4109 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4110 | * there |
14a5cf38 JH |
4111 | */ |
4112 | if (buf != b->ptr) { | |
4113 | Copy(buf, b->ptr, avail, STDCHAR); | |
4114 | } | |
4115 | count -= avail; | |
4116 | unread += avail; | |
4117 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4118 | } | |
4119 | } | |
93679785 NIS |
4120 | if (count > 0) { |
4121 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4122 | } | |
14a5cf38 | 4123 | return unread; |
760ac839 LW |
4124 | } |
4125 | ||
9e353e3b | 4126 | SSize_t |
f62ce20a | 4127 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4128 | { |
de009b76 | 4129 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4130 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4131 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4132 | Size_t written = 0; |
4133 | if (!b->buf) | |
4134 | PerlIO_get_base(f); | |
4135 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4136 | return 0; | |
0678cb22 NIS |
4137 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4138 | if (PerlIO_flush(f) != 0) { | |
4139 | return 0; | |
4140 | } | |
4141 | } | |
ee56a6b9 CS |
4142 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4143 | flushptr = buf + count; | |
4144 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4145 | --flushptr; | |
4146 | } | |
14a5cf38 JH |
4147 | while (count > 0) { |
4148 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
4149 | if ((SSize_t) count < avail) | |
4150 | avail = count; | |
ee56a6b9 CS |
4151 | if (flushptr > buf && flushptr <= buf + avail) |
4152 | avail = flushptr - buf; | |
14a5cf38 | 4153 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4154 | if (avail) { |
4155 | Copy(buf, b->ptr, avail, STDCHAR); | |
4156 | count -= avail; | |
4157 | buf += avail; | |
4158 | written += avail; | |
4159 | b->ptr += avail; | |
4160 | if (buf == flushptr) | |
4161 | PerlIO_flush(f); | |
14a5cf38 JH |
4162 | } |
4163 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4164 | if (PerlIO_flush(f) == -1) |
4165 | return -1; | |
14a5cf38 JH |
4166 | } |
4167 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4168 | PerlIO_flush(f); | |
4169 | return written; | |
9e353e3b NIS |
4170 | } |
4171 | ||
94a175e1 | 4172 | IV |
f62ce20a | 4173 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4174 | { |
14a5cf38 JH |
4175 | IV code; |
4176 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4177 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4178 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4179 | if (code == 0) { | |
de009b76 | 4180 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4181 | b->posn = PerlIO_tell(PerlIONext(f)); |
4182 | } | |
9e353e3b | 4183 | } |
14a5cf38 | 4184 | return code; |
9e353e3b NIS |
4185 | } |
4186 | ||
4187 | Off_t | |
f62ce20a | 4188 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4189 | { |
dcda55fc | 4190 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4191 | /* |
71200d45 | 4192 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4193 | */ |
4194 | Off_t posn = b->posn; | |
37725cdc | 4195 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4196 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4197 | #if 1 | |
4198 | /* As O_APPEND files are normally shared in some sense it is better | |
4199 | to flush : | |
4200 | */ | |
4201 | PerlIO_flush(f); | |
4202 | #else | |
37725cdc | 4203 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4204 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4205 | #endif | |
4206 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4207 | } | |
14a5cf38 JH |
4208 | if (b->buf) { |
4209 | /* | |
71200d45 | 4210 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4211 | */ |
4212 | posn += (b->ptr - b->buf); | |
4213 | } | |
4214 | return posn; | |
9e353e3b NIS |
4215 | } |
4216 | ||
4217 | IV | |
44798d05 NIS |
4218 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4219 | { | |
de009b76 AL |
4220 | const IV code = PerlIOBase_popped(aTHX_ f); |
4221 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4222 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4223 | Safefree(b->buf); | |
4224 | } | |
dcda55fc | 4225 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4226 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4227 | return code; | |
4228 | } | |
4229 | ||
4230 | IV | |
f62ce20a | 4231 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4232 | { |
de009b76 AL |
4233 | const IV code = PerlIOBase_close(aTHX_ f); |
4234 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4235 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4236 | Safefree(b->buf); |
14a5cf38 | 4237 | } |
dcda55fc | 4238 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4239 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4240 | return code; | |
760ac839 LW |
4241 | } |
4242 | ||
9e353e3b | 4243 | STDCHAR * |
f62ce20a | 4244 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4245 | { |
dcda55fc | 4246 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4247 | if (!b->buf) |
4248 | PerlIO_get_base(f); | |
4249 | return b->ptr; | |
9e353e3b NIS |
4250 | } |
4251 | ||
05d1247b | 4252 | SSize_t |
f62ce20a | 4253 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4254 | { |
dcda55fc | 4255 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4256 | if (!b->buf) |
4257 | PerlIO_get_base(f); | |
4258 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4259 | return (b->end - b->ptr); | |
4260 | return 0; | |
9e353e3b NIS |
4261 | } |
4262 | ||
4263 | STDCHAR * | |
f62ce20a | 4264 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4265 | { |
dcda55fc | 4266 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4267 | PERL_UNUSED_CONTEXT; |
4268 | ||
14a5cf38 JH |
4269 | if (!b->buf) { |
4270 | if (!b->bufsiz) | |
1810cd7c | 4271 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4272 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4273 | if (!b->buf) { |
4274 | b->buf = (STDCHAR *) & b->oneword; | |
4275 | b->bufsiz = sizeof(b->oneword); | |
4276 | } | |
dcda55fc | 4277 | b->end = b->ptr = b->buf; |
06da4f11 | 4278 | } |
14a5cf38 | 4279 | return b->buf; |
9e353e3b NIS |
4280 | } |
4281 | ||
4282 | Size_t | |
f62ce20a | 4283 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4284 | { |
dcda55fc | 4285 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4286 | if (!b->buf) |
4287 | PerlIO_get_base(f); | |
4288 | return (b->end - b->buf); | |
9e353e3b NIS |
4289 | } |
4290 | ||
4291 | void | |
f62ce20a | 4292 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4293 | { |
dcda55fc | 4294 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4295 | #ifndef DEBUGGING |
4296 | PERL_UNUSED_ARG(cnt); | |
4297 | #endif | |
14a5cf38 JH |
4298 | if (!b->buf) |
4299 | PerlIO_get_base(f); | |
4300 | b->ptr = ptr; | |
b727803b RGS |
4301 | assert(PerlIO_get_cnt(f) == cnt); |
4302 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4303 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4304 | } |
4305 | ||
71200d45 | 4306 | PerlIO * |
ecdeb87c | 4307 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4308 | { |
ecdeb87c | 4309 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4310 | } |
4311 | ||
4312 | ||
4313 | ||
27da23d5 | 4314 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4315 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4316 | "perlio", |
4317 | sizeof(PerlIOBuf), | |
86e05cf2 | 4318 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4319 | PerlIOBuf_pushed, |
44798d05 | 4320 | PerlIOBuf_popped, |
14a5cf38 | 4321 | PerlIOBuf_open, |
86e05cf2 | 4322 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4323 | NULL, |
4324 | PerlIOBase_fileno, | |
71200d45 | 4325 | PerlIOBuf_dup, |
14a5cf38 JH |
4326 | PerlIOBuf_read, |
4327 | PerlIOBuf_unread, | |
4328 | PerlIOBuf_write, | |
4329 | PerlIOBuf_seek, | |
4330 | PerlIOBuf_tell, | |
4331 | PerlIOBuf_close, | |
4332 | PerlIOBuf_flush, | |
4333 | PerlIOBuf_fill, | |
4334 | PerlIOBase_eof, | |
4335 | PerlIOBase_error, | |
4336 | PerlIOBase_clearerr, | |
4337 | PerlIOBase_setlinebuf, | |
4338 | PerlIOBuf_get_base, | |
4339 | PerlIOBuf_bufsiz, | |
4340 | PerlIOBuf_get_ptr, | |
4341 | PerlIOBuf_get_cnt, | |
4342 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4343 | }; |
4344 | ||
66ecd56b | 4345 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4346 | /* |
71200d45 | 4347 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4348 | */ |
5e2ab84b NIS |
4349 | |
4350 | IV | |
f62ce20a | 4351 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4352 | { |
14a5cf38 | 4353 | /* |
71200d45 | 4354 | * Should never happen |
14a5cf38 JH |
4355 | */ |
4356 | PerlIO_flush(f); | |
4357 | return 0; | |
5e2ab84b NIS |
4358 | } |
4359 | ||
4360 | IV | |
f62ce20a | 4361 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4362 | { |
14a5cf38 | 4363 | /* |
71200d45 | 4364 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4365 | */ |
4366 | PerlIO_flush(f); | |
4367 | return PerlIO_close(f); | |
5e2ab84b NIS |
4368 | } |
4369 | ||
94a175e1 | 4370 | IV |
f62ce20a | 4371 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4372 | { |
14a5cf38 | 4373 | /* |
71200d45 | 4374 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4375 | */ |
4376 | PerlIO_flush(f); | |
4377 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4378 | } |
4379 | ||
4380 | ||
4381 | IV | |
f62ce20a | 4382 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4383 | { |
dcda55fc | 4384 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4385 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4386 | Safefree(b->buf); |
14a5cf38 JH |
4387 | b->buf = NULL; |
4388 | } | |
4389 | PerlIO_pop(aTHX_ f); | |
4390 | return 0; | |
5e2ab84b NIS |
4391 | } |
4392 | ||
4393 | void | |
f62ce20a | 4394 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4395 | { |
14a5cf38 JH |
4396 | if (cnt <= 0) { |
4397 | PerlIO_flush(f); | |
4398 | } | |
4399 | else { | |
f62ce20a | 4400 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4401 | } |
5e2ab84b NIS |
4402 | } |
4403 | ||
4404 | IV | |
2dc2558e | 4405 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4406 | { |
de009b76 | 4407 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4408 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4409 | /* |
71200d45 NIS |
4410 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4411 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4412 | */ |
4413 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4414 | (PerlIOBase(PerlIONext(f))-> | |
4415 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4416 | return code; | |
5e2ab84b NIS |
4417 | } |
4418 | ||
4419 | SSize_t | |
f62ce20a | 4420 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4421 | { |
14a5cf38 JH |
4422 | SSize_t avail = PerlIO_get_cnt(f); |
4423 | SSize_t got = 0; | |
eb160463 | 4424 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4425 | avail = count; |
4426 | if (avail > 0) | |
f62ce20a | 4427 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4428 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4429 | const SSize_t more = |
14a5cf38 JH |
4430 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4431 | if (more >= 0 || got == 0) | |
4432 | got += more; | |
4433 | } | |
4434 | return got; | |
5e2ab84b NIS |
4435 | } |
4436 | ||
27da23d5 | 4437 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4438 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4439 | "pending", |
4440 | sizeof(PerlIOBuf), | |
86e05cf2 | 4441 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4442 | PerlIOPending_pushed, |
44798d05 | 4443 | PerlIOBuf_popped, |
14a5cf38 | 4444 | NULL, |
86e05cf2 | 4445 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4446 | NULL, |
4447 | PerlIOBase_fileno, | |
71200d45 | 4448 | PerlIOBuf_dup, |
14a5cf38 JH |
4449 | PerlIOPending_read, |
4450 | PerlIOBuf_unread, | |
4451 | PerlIOBuf_write, | |
4452 | PerlIOPending_seek, | |
4453 | PerlIOBuf_tell, | |
4454 | PerlIOPending_close, | |
4455 | PerlIOPending_flush, | |
4456 | PerlIOPending_fill, | |
4457 | PerlIOBase_eof, | |
4458 | PerlIOBase_error, | |
4459 | PerlIOBase_clearerr, | |
4460 | PerlIOBase_setlinebuf, | |
4461 | PerlIOBuf_get_base, | |
4462 | PerlIOBuf_bufsiz, | |
4463 | PerlIOBuf_get_ptr, | |
4464 | PerlIOBuf_get_cnt, | |
4465 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4466 | }; |
4467 | ||
4468 | ||
4469 | ||
4470 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4471 | /* |
4472 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4473 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4474 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4475 | * |
4476 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4477 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4478 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4479 | * that it ends at c->nl; these two cases can be distinguished by | |
4480 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4481 | * _unread() and _flush() calls. | |
4482 | * It only matters for read operations. | |
66ecd56b NIS |
4483 | */ |
4484 | ||
14a5cf38 | 4485 | typedef struct { |
22569500 NIS |
4486 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4487 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4488 | * buffer */ |
99efab12 NIS |
4489 | } PerlIOCrlf; |
4490 | ||
ff1e3883 JD |
4491 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4492 | * Otherwise the :crlf layer would always revert back to | |
4493 | * raw mode. | |
4494 | */ | |
4495 | static void | |
4496 | S_inherit_utf8_flag(PerlIO *f) | |
4497 | { | |
4498 | PerlIO *g = PerlIONext(f); | |
4499 | if (PerlIOValid(g)) { | |
4500 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4501 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4502 | } | |
4503 | } | |
4504 | } | |
4505 | ||
f5b9d040 | 4506 | IV |
2dc2558e | 4507 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4508 | { |
14a5cf38 JH |
4509 | IV code; |
4510 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4511 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4512 | #if 0 |
14a5cf38 | 4513 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4514 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4515 | PerlIOBase(f)->flags); |
5e2ab84b | 4516 | #endif |
8229d19f | 4517 | { |
5da08ab0 LT |
4518 | /* If the old top layer is a CRLF layer, reactivate it (if |
4519 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4520 | PerlIO *g = PerlIONext(f); |
7826b36f | 4521 | if (PerlIOValid(g)) { |
8229d19f JH |
4522 | PerlIOl *b = PerlIOBase(g); |
4523 | if (b && b->tab == &PerlIO_crlf) { | |
4524 | if (!(b->flags & PERLIO_F_CRLF)) | |
4525 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4526 | S_inherit_utf8_flag(g); |
8229d19f JH |
4527 | PerlIO_pop(aTHX_ f); |
4528 | return code; | |
7826b36f | 4529 | } |
8229d19f JH |
4530 | } |
4531 | } | |
ff1e3883 | 4532 | S_inherit_utf8_flag(f); |
14a5cf38 | 4533 | return code; |
f5b9d040 NIS |
4534 | } |
4535 | ||
4536 | ||
99efab12 | 4537 | SSize_t |
f62ce20a | 4538 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4539 | { |
dcda55fc | 4540 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4541 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4542 | *(c->nl) = 0xd; |
4543 | c->nl = NULL; | |
4544 | } | |
4545 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4546 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4547 | else { |
4548 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4549 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4550 | SSize_t unread = 0; | |
4551 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4552 | PerlIO_flush(f); | |
4553 | if (!b->buf) | |
4554 | PerlIO_get_base(f); | |
4555 | if (b->buf) { | |
4556 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4557 | b->end = b->ptr = b->buf + b->bufsiz; | |
4558 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4559 | b->posn -= b->bufsiz; | |
4560 | } | |
4561 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4562 | const int ch = *--buf; |
14a5cf38 JH |
4563 | if (ch == '\n') { |
4564 | if (b->ptr - 2 >= b->buf) { | |
4565 | *--(b->ptr) = 0xa; | |
4566 | *--(b->ptr) = 0xd; | |
4567 | unread++; | |
4568 | count--; | |
4569 | } | |
4570 | else { | |
93c2c2ec IZ |
4571 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4572 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4573 | unread++; | |
4574 | count--; | |
14a5cf38 JH |
4575 | } |
4576 | } | |
4577 | else { | |
4578 | *--(b->ptr) = ch; | |
4579 | unread++; | |
4580 | count--; | |
4581 | } | |
4582 | } | |
4583 | } | |
4584 | return unread; | |
4585 | } | |
99efab12 NIS |
4586 | } |
4587 | ||
93c2c2ec | 4588 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4589 | SSize_t |
f62ce20a | 4590 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4591 | { |
dcda55fc | 4592 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4593 | if (!b->buf) |
4594 | PerlIO_get_base(f); | |
4595 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4596 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4597 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4598 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4599 | scan: |
4600 | while (nl < b->end && *nl != 0xd) | |
4601 | nl++; | |
4602 | if (nl < b->end && *nl == 0xd) { | |
4603 | test: | |
4604 | if (nl + 1 < b->end) { | |
4605 | if (nl[1] == 0xa) { | |
4606 | *nl = '\n'; | |
4607 | c->nl = nl; | |
4608 | } | |
4609 | else { | |
4610 | /* | |
71200d45 | 4611 | * Not CR,LF but just CR |
14a5cf38 JH |
4612 | */ |
4613 | nl++; | |
4614 | goto scan; | |
4615 | } | |
4616 | } | |
4617 | else { | |
4618 | /* | |
71200d45 | 4619 | * Blast - found CR as last char in buffer |
14a5cf38 | 4620 | */ |
e87a358a | 4621 | |
14a5cf38 JH |
4622 | if (b->ptr < nl) { |
4623 | /* | |
4624 | * They may not care, defer work as long as | |
71200d45 | 4625 | * possible |
14a5cf38 | 4626 | */ |
a0d1d361 | 4627 | c->nl = nl; |
14a5cf38 JH |
4628 | return (nl - b->ptr); |
4629 | } | |
4630 | else { | |
4631 | int code; | |
22569500 | 4632 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4633 | * flush() is concerned */ |
22569500 | 4634 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4635 | /* Note as we have moved buf up flush's |
4636 | posn += ptr-buf | |
4637 | will naturally make posn point at CR | |
4638 | */ | |
22569500 NIS |
4639 | b->bufsiz--; /* Buffer is thus smaller */ |
4640 | code = PerlIO_fill(f); /* Fetch some more */ | |
4641 | b->bufsiz++; /* Restore size for next time */ | |
4642 | b->buf--; /* Point at space */ | |
4643 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4644 | * off */ |
22569500 | 4645 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4646 | if (code == 0) |
22569500 | 4647 | goto test; /* fill() call worked */ |
14a5cf38 | 4648 | /* |
71200d45 | 4649 | * CR at EOF - just fall through |
14a5cf38 | 4650 | */ |
a0d1d361 | 4651 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4652 | } |
4653 | } | |
4654 | } | |
4655 | } | |
4656 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4657 | } | |
4658 | return 0; | |
99efab12 NIS |
4659 | } |
4660 | ||
4661 | void | |
f62ce20a | 4662 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4663 | { |
dcda55fc AL |
4664 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4665 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4666 | if (!b->buf) |
4667 | PerlIO_get_base(f); | |
4668 | if (!ptr) { | |
a0d1d361 | 4669 | if (c->nl) { |
14a5cf38 | 4670 | ptr = c->nl + 1; |
22569500 | 4671 | if (ptr == b->end && *c->nl == 0xd) { |
486ec47a | 4672 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4673 | ptr--; |
4674 | } | |
4675 | } | |
14a5cf38 JH |
4676 | else { |
4677 | ptr = b->end; | |
14a5cf38 JH |
4678 | } |
4679 | ptr -= cnt; | |
4680 | } | |
4681 | else { | |
6f207bd3 | 4682 | NOOP; |
3b4bd3fd | 4683 | #if 0 |
14a5cf38 | 4684 | /* |
71200d45 | 4685 | * Test code - delete when it works ... |
14a5cf38 | 4686 | */ |
3b4bd3fd | 4687 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4688 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4689 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
486ec47a | 4690 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4691 | chk--; |
22569500 | 4692 | } |
14a5cf38 JH |
4693 | chk -= cnt; |
4694 | ||
a0d1d361 | 4695 | if (ptr != chk ) { |
99ef548b | 4696 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4697 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4698 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4699 | } |
99ef548b | 4700 | #endif |
14a5cf38 JH |
4701 | } |
4702 | if (c->nl) { | |
4703 | if (ptr > c->nl) { | |
4704 | /* | |
71200d45 | 4705 | * They have taken what we lied about |
14a5cf38 JH |
4706 | */ |
4707 | *(c->nl) = 0xd; | |
4708 | c->nl = NULL; | |
4709 | ptr++; | |
4710 | } | |
4711 | } | |
4712 | b->ptr = ptr; | |
4713 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4714 | } |
4715 | ||
4716 | SSize_t | |
f62ce20a | 4717 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4718 | { |
14a5cf38 | 4719 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4720 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4721 | else { |
dcda55fc | 4722 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4723 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4724 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4725 | if (!b->buf) |
4726 | PerlIO_get_base(f); | |
4727 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4728 | return 0; | |
4729 | while (buf < ebuf) { | |
dcda55fc | 4730 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4731 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4732 | while (buf < ebuf && b->ptr < eptr) { | |
4733 | if (*buf == '\n') { | |
4734 | if ((b->ptr + 2) > eptr) { | |
4735 | /* | |
71200d45 | 4736 | * Not room for both |
14a5cf38 JH |
4737 | */ |
4738 | PerlIO_flush(f); | |
4739 | break; | |
4740 | } | |
4741 | else { | |
22569500 NIS |
4742 | *(b->ptr)++ = 0xd; /* CR */ |
4743 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4744 | buf++; |
4745 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4746 | PerlIO_flush(f); | |
4747 | break; | |
4748 | } | |
4749 | } | |
4750 | } | |
4751 | else { | |
dcda55fc | 4752 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4753 | } |
4754 | if (b->ptr >= eptr) { | |
4755 | PerlIO_flush(f); | |
4756 | break; | |
4757 | } | |
4758 | } | |
4759 | } | |
4760 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4761 | PerlIO_flush(f); | |
4762 | return (buf - (STDCHAR *) vbuf); | |
4763 | } | |
99efab12 NIS |
4764 | } |
4765 | ||
4766 | IV | |
f62ce20a | 4767 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4768 | { |
dcda55fc | 4769 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4770 | if (c->nl) { |
4771 | *(c->nl) = 0xd; | |
4772 | c->nl = NULL; | |
4773 | } | |
f62ce20a | 4774 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4775 | } |
4776 | ||
86e05cf2 NIS |
4777 | IV |
4778 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4779 | { | |
4780 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4781 | /* In text mode - flush any pending stuff and flip it */ | |
4782 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4783 | #ifndef PERLIO_USING_CRLF | |
4784 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4785 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4786 | #endif |
4787 | } | |
4788 | return 0; | |
4789 | } | |
4790 | ||
27da23d5 | 4791 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4792 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4793 | "crlf", |
4794 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4795 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4796 | PerlIOCrlf_pushed, |
44798d05 | 4797 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4798 | PerlIOBuf_open, |
86e05cf2 | 4799 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4800 | NULL, |
4801 | PerlIOBase_fileno, | |
71200d45 | 4802 | PerlIOBuf_dup, |
de009b76 | 4803 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4804 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4805 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4806 | PerlIOBuf_seek, |
4807 | PerlIOBuf_tell, | |
4808 | PerlIOBuf_close, | |
4809 | PerlIOCrlf_flush, | |
4810 | PerlIOBuf_fill, | |
4811 | PerlIOBase_eof, | |
4812 | PerlIOBase_error, | |
4813 | PerlIOBase_clearerr, | |
4814 | PerlIOBase_setlinebuf, | |
4815 | PerlIOBuf_get_base, | |
4816 | PerlIOBuf_bufsiz, | |
4817 | PerlIOBuf_get_ptr, | |
4818 | PerlIOCrlf_get_cnt, | |
4819 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4820 | }; |
4821 | ||
9e353e3b | 4822 | PerlIO * |
e87a358a | 4823 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4824 | { |
97aff369 | 4825 | dVAR; |
a1ea730d | 4826 | if (!PL_perlio) { |
14a5cf38 JH |
4827 | PerlIO_stdstreams(aTHX); |
4828 | } | |
303f2dc3 | 4829 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4830 | } |
4831 | ||
9e353e3b | 4832 | PerlIO * |
e87a358a | 4833 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4834 | { |
97aff369 | 4835 | dVAR; |
a1ea730d | 4836 | if (!PL_perlio) { |
14a5cf38 JH |
4837 | PerlIO_stdstreams(aTHX); |
4838 | } | |
303f2dc3 | 4839 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4840 | } |
4841 | ||
9e353e3b | 4842 | PerlIO * |
e87a358a | 4843 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4844 | { |
97aff369 | 4845 | dVAR; |
a1ea730d | 4846 | if (!PL_perlio) { |
14a5cf38 JH |
4847 | PerlIO_stdstreams(aTHX); |
4848 | } | |
303f2dc3 | 4849 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4850 | } |
4851 | ||
4852 | /*--------------------------------------------------------------------------------------*/ | |
4853 | ||
9e353e3b NIS |
4854 | char * |
4855 | PerlIO_getname(PerlIO *f, char *buf) | |
4856 | { | |
14a5cf38 | 4857 | dTHX; |
a15cef0c | 4858 | #ifdef VMS |
73d840c0 | 4859 | char *name = NULL; |
7659f319 | 4860 | bool exported = FALSE; |
14a5cf38 | 4861 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4862 | if (!stdio) { |
4863 | stdio = PerlIO_exportFILE(f,0); | |
4864 | exported = TRUE; | |
4865 | } | |
4866 | if (stdio) { | |
14a5cf38 | 4867 | name = fgetname(stdio, buf); |
7659f319 CB |
4868 | if (exported) PerlIO_releaseFILE(f,stdio); |
4869 | } | |
73d840c0 | 4870 | return name; |
a15cef0c | 4871 | #else |
8772537c AL |
4872 | PERL_UNUSED_ARG(f); |
4873 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 4874 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 4875 | return NULL; |
a15cef0c | 4876 | #endif |
9e353e3b NIS |
4877 | } |
4878 | ||
4879 | ||
4880 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4881 | /* |
4882 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4883 | * terms of above |
14a5cf38 | 4884 | */ |
9e353e3b | 4885 | |
e87a358a NIS |
4886 | #undef PerlIO_fdopen |
4887 | PerlIO * | |
4888 | PerlIO_fdopen(int fd, const char *mode) | |
4889 | { | |
4890 | dTHX; | |
bd61b366 | 4891 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4892 | } |
4893 | ||
4894 | #undef PerlIO_open | |
4895 | PerlIO * | |
4896 | PerlIO_open(const char *path, const char *mode) | |
4897 | { | |
4898 | dTHX; | |
42d9b98d | 4899 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4900 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4901 | } |
4902 | ||
4903 | #undef Perlio_reopen | |
4904 | PerlIO * | |
4905 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4906 | { | |
4907 | dTHX; | |
42d9b98d | 4908 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4909 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4910 | } |
4911 | ||
9e353e3b | 4912 | #undef PerlIO_getc |
6f9d8c32 | 4913 | int |
9e353e3b | 4914 | PerlIO_getc(PerlIO *f) |
760ac839 | 4915 | { |
e87a358a | 4916 | dTHX; |
14a5cf38 | 4917 | STDCHAR buf[1]; |
de009b76 | 4918 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4919 | return (unsigned char) buf[0]; |
4920 | } | |
4921 | return EOF; | |
313ca112 NIS |
4922 | } |
4923 | ||
4924 | #undef PerlIO_ungetc | |
4925 | int | |
4926 | PerlIO_ungetc(PerlIO *f, int ch) | |
4927 | { | |
e87a358a | 4928 | dTHX; |
14a5cf38 JH |
4929 | if (ch != EOF) { |
4930 | STDCHAR buf = ch; | |
4931 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4932 | return ch; | |
4933 | } | |
4934 | return EOF; | |
760ac839 LW |
4935 | } |
4936 | ||
9e353e3b NIS |
4937 | #undef PerlIO_putc |
4938 | int | |
4939 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4940 | { |
e87a358a | 4941 | dTHX; |
14a5cf38 JH |
4942 | STDCHAR buf = ch; |
4943 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4944 | } |
4945 | ||
9e353e3b | 4946 | #undef PerlIO_puts |
760ac839 | 4947 | int |
9e353e3b | 4948 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4949 | { |
e87a358a | 4950 | dTHX; |
dcda55fc | 4951 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4952 | } |
4953 | ||
4954 | #undef PerlIO_rewind | |
4955 | void | |
c78749f2 | 4956 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4957 | { |
e87a358a | 4958 | dTHX; |
14a5cf38 JH |
4959 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4960 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4961 | } |
4962 | ||
4963 | #undef PerlIO_vprintf | |
4964 | int | |
4965 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4966 | { | |
14a5cf38 | 4967 | dTHX; |
53ce71d3 | 4968 | SV * sv; |
b83604b4 | 4969 | const char *s; |
14a5cf38 JH |
4970 | STRLEN len; |
4971 | SSize_t wrote; | |
2cc61e15 | 4972 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4973 | va_list apc; |
4974 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4975 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 4976 | #else |
53ce71d3 | 4977 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4978 | #endif |
b83604b4 | 4979 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4980 | wrote = PerlIO_write(f, s, len); |
4981 | SvREFCNT_dec(sv); | |
4982 | return wrote; | |
760ac839 LW |
4983 | } |
4984 | ||
4985 | #undef PerlIO_printf | |
6f9d8c32 | 4986 | int |
14a5cf38 | 4987 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4988 | { |
14a5cf38 JH |
4989 | va_list ap; |
4990 | int result; | |
4991 | va_start(ap, fmt); | |
4992 | result = PerlIO_vprintf(f, fmt, ap); | |
4993 | va_end(ap); | |
4994 | return result; | |
760ac839 LW |
4995 | } |
4996 | ||
4997 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4998 | int |
14a5cf38 | 4999 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5000 | { |
e87a358a | 5001 | dTHX; |
14a5cf38 JH |
5002 | va_list ap; |
5003 | int result; | |
5004 | va_start(ap, fmt); | |
5005 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5006 | va_end(ap); | |
5007 | return result; | |
760ac839 LW |
5008 | } |
5009 | ||
5010 | #undef PerlIO_tmpfile | |
5011 | PerlIO * | |
c78749f2 | 5012 | PerlIO_tmpfile(void) |
760ac839 | 5013 | { |
2941a2e1 JH |
5014 | dTHX; |
5015 | PerlIO *f = NULL; | |
2941a2e1 | 5016 | #ifdef WIN32 |
de009b76 | 5017 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5018 | if (fd >= 0) |
5019 | f = PerlIO_fdopen(fd, "w+b"); | |
5020 | #else /* WIN32 */ | |
460c8493 | 5021 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5022 | int fd = -1; |
5023 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
5024 | const char * const tmpdir = PL_tainting ? NULL : PerlEnv_getenv("TMPDIR"); | |
525f6fe9 | 5025 | SV * sv = NULL; |
2941a2e1 JH |
5026 | /* |
5027 | * I have no idea how portable mkstemp() is ... NI-S | |
5028 | */ | |
7299ca58 | 5029 | if (tmpdir && *tmpdir) { |
0b99e986 | 5030 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5031 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5032 | sv_catpv(sv, tempname + 4); |
5033 | fd = mkstemp(SvPVX(sv)); | |
5034 | } | |
5035 | if (fd < 0) { | |
7299ca58 | 5036 | sv = NULL; |
0b99e986 RGS |
5037 | /* else we try /tmp */ |
5038 | fd = mkstemp(tempname); | |
5039 | } | |
2941a2e1 JH |
5040 | if (fd >= 0) { |
5041 | f = PerlIO_fdopen(fd, "w+"); | |
5042 | if (f) | |
5043 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5044 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5045 | } |
ef8d46e8 | 5046 | SvREFCNT_dec(sv); |
2941a2e1 | 5047 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5048 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5049 | |
085e731f CB |
5050 | if (stdio) |
5051 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5052 | ||
2941a2e1 JH |
5053 | # endif /* else HAS_MKSTEMP */ |
5054 | #endif /* else WIN32 */ | |
5055 | return f; | |
760ac839 LW |
5056 | } |
5057 | ||
6f9d8c32 NIS |
5058 | #undef HAS_FSETPOS |
5059 | #undef HAS_FGETPOS | |
5060 | ||
22569500 NIS |
5061 | #endif /* USE_SFIO */ |
5062 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5063 | |
9e353e3b | 5064 | /*======================================================================================*/ |
14a5cf38 | 5065 | /* |
71200d45 NIS |
5066 | * Now some functions in terms of above which may be needed even if we are |
5067 | * not in true PerlIO mode | |
9e353e3b | 5068 | */ |
188f0c84 YO |
5069 | const char * |
5070 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5071 | { | |
5072 | dVAR; | |
8b850bd5 NC |
5073 | const char *direction = NULL; |
5074 | SV *layers; | |
188f0c84 YO |
5075 | /* |
5076 | * Need to supply default layer info from open.pm | |
5077 | */ | |
8b850bd5 NC |
5078 | |
5079 | if (!PL_curcop) | |
5080 | return NULL; | |
5081 | ||
5082 | if (mode && mode[0] != 'r') { | |
5083 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5084 | direction = "open>"; | |
5085 | } else { | |
5086 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5087 | direction = "open<"; | |
188f0c84 | 5088 | } |
8b850bd5 NC |
5089 | if (!direction) |
5090 | return NULL; | |
5091 | ||
20439bc7 | 5092 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5093 | |
5094 | assert(layers); | |
5095 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5096 | } |
5097 | ||
9e353e3b | 5098 | |
760ac839 LW |
5099 | #ifndef HAS_FSETPOS |
5100 | #undef PerlIO_setpos | |
5101 | int | |
766a733e | 5102 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5103 | { |
14a5cf38 JH |
5104 | dTHX; |
5105 | if (SvOK(pos)) { | |
5106 | STRLEN len; | |
c4420975 | 5107 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5108 | if (f && len == sizeof(Off_t)) |
5109 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5110 | } | |
93189314 | 5111 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5112 | return -1; |
760ac839 | 5113 | } |
c411622e | 5114 | #else |
c411622e | 5115 | #undef PerlIO_setpos |
5116 | int | |
766a733e | 5117 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5118 | { |
14a5cf38 JH |
5119 | dTHX; |
5120 | if (SvOK(pos)) { | |
5121 | STRLEN len; | |
c4420975 | 5122 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5123 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5124 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5125 | return fsetpos64(f, fpos); |
d9b3e12d | 5126 | #else |
14a5cf38 | 5127 | return fsetpos(f, fpos); |
d9b3e12d | 5128 | #endif |
14a5cf38 | 5129 | } |
766a733e | 5130 | } |
93189314 | 5131 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5132 | return -1; |
c411622e | 5133 | } |
5134 | #endif | |
760ac839 LW |
5135 | |
5136 | #ifndef HAS_FGETPOS | |
5137 | #undef PerlIO_getpos | |
5138 | int | |
766a733e | 5139 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5140 | { |
14a5cf38 JH |
5141 | dTHX; |
5142 | Off_t posn = PerlIO_tell(f); | |
5143 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5144 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5145 | } |
c411622e | 5146 | #else |
c411622e | 5147 | #undef PerlIO_getpos |
5148 | int | |
766a733e | 5149 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5150 | { |
14a5cf38 JH |
5151 | dTHX; |
5152 | Fpos_t fpos; | |
5153 | int code; | |
2d4389e4 | 5154 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5155 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5156 | #else |
14a5cf38 | 5157 | code = fgetpos(f, &fpos); |
d9b3e12d | 5158 | #endif |
14a5cf38 JH |
5159 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5160 | return code; | |
c411622e | 5161 | } |
5162 | #endif | |
760ac839 LW |
5163 | |
5164 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5165 | ||
5166 | int | |
c78749f2 | 5167 | vprintf(char *pat, char *args) |
662a7e3f CS |
5168 | { |
5169 | _doprnt(pat, args, stdout); | |
22569500 | 5170 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5171 | * value */ |
662a7e3f CS |
5172 | } |
5173 | ||
5174 | int | |
c78749f2 | 5175 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5176 | { |
5177 | _doprnt(pat, args, fd); | |
22569500 | 5178 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5179 | * value */ |
760ac839 LW |
5180 | } |
5181 | ||
5182 | #endif | |
5183 | ||
5184 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5185 | int |
8ac85365 | 5186 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5187 | { |
8ff9a42b | 5188 | dTHX; |
d9fad198 | 5189 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5190 | PERL_UNUSED_CONTEXT; |
5191 | ||
1208b3dd JH |
5192 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5193 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5194 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5195 | } |
1208b3dd | 5196 | #endif |
14a5cf38 | 5197 | return val; |
760ac839 LW |
5198 | } |
5199 | #endif | |
5200 | ||
5201 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5202 | int |
14a5cf38 | 5203 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5204 | { |
14a5cf38 JH |
5205 | va_list ap; |
5206 | int result; | |
5207 | va_start(ap, fmt); | |
5208 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5209 | va_end(ap); | |
5210 | return result; | |
760ac839 LW |
5211 | } |
5212 | #endif | |
9cfa90c0 NC |
5213 | |
5214 | /* | |
5215 | * Local variables: | |
5216 | * c-indentation-style: bsd | |
5217 | * c-basic-offset: 4 | |
5218 | * indent-tabs-mode: t | |
5219 | * End: | |
5220 | * | |
37442d52 RGS |
5221 | * ex: set ts=8 sts=4 sw=4 noet: |
5222 | */ |