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 | ||
25bbd826 CB |
73 | #ifdef VMS |
74 | #include <rms.h> | |
75 | #endif | |
76 | ||
abf9167d DM |
77 | #define PerlIO_lockcnt(f) (((PerlIOl*)(f))->head->flags) |
78 | ||
1b7a0411 | 79 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 80 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 81 | if (PerlIOValid(f)) { \ |
46c461b5 | 82 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
83 | if (tab && tab->callback) \ |
84 | return (*tab->callback) args; \ | |
85 | else \ | |
86 | return PerlIOBase_ ## base args; \ | |
87 | } \ | |
88 | else \ | |
89 | SETERRNO(EBADF, SS_IVCHAN); \ | |
90 | return failure | |
91 | ||
92 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 93 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 94 | if (PerlIOValid(f)) { \ |
46c461b5 | 95 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
96 | if (tab && tab->callback) \ |
97 | return (*tab->callback) args; \ | |
98 | SETERRNO(EINVAL, LIB_INVARG); \ | |
99 | } \ | |
100 | else \ | |
101 | SETERRNO(EBADF, SS_IVCHAN); \ | |
102 | return failure | |
103 | ||
104 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 105 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 106 | if (PerlIOValid(f)) { \ |
46c461b5 | 107 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
108 | if (tab && tab->callback) \ |
109 | (*tab->callback) args; \ | |
110 | else \ | |
111 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
112 | } \ |
113 | else \ | |
114 | SETERRNO(EBADF, SS_IVCHAN) | |
115 | ||
116 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 117 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 118 | if (PerlIOValid(f)) { \ |
46c461b5 | 119 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
120 | if (tab && tab->callback) \ |
121 | (*tab->callback) args; \ | |
37725cdc NIS |
122 | else \ |
123 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
124 | } \ |
125 | else \ | |
126 | SETERRNO(EBADF, SS_IVCHAN) | |
127 | ||
89a3a251 JH |
128 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
129 | extern int fseeko(FILE *, off_t, int); | |
130 | extern off_t ftello(FILE *); | |
131 | #endif | |
132 | ||
71ab4674 | 133 | #ifndef USE_SFIO |
a0c21aa1 JH |
134 | |
135 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); | |
136 | ||
71ab4674 SP |
137 | int |
138 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
139 | { | |
140 | /* | |
141 | * This used to be contents of do_binmode in doio.c | |
142 | */ | |
143 | #ifdef DOSISH | |
cd86ed9d | 144 | # if defined(atarist) |
58c0efa5 | 145 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
146 | if (!fflush(fp)) { |
147 | if (mode & O_BINARY) | |
148 | ((FILE *) fp)->_flag |= _IOBIN; | |
149 | else | |
150 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
151 | return 1; | |
152 | } | |
153 | return 0; | |
154 | # else | |
155 | dTHX; | |
58c0efa5 | 156 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
157 | #ifdef NETWARE |
158 | if (PerlLIO_setmode(fp, mode) != -1) { | |
159 | #else | |
160 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
161 | #endif | |
71ab4674 SP |
162 | return 1; |
163 | } | |
164 | else | |
165 | return 0; | |
166 | # endif | |
167 | #else | |
168 | # if defined(USEMYBINMODE) | |
169 | dTHX; | |
58c0efa5 RGS |
170 | # if defined(__CYGWIN__) |
171 | PERL_UNUSED_ARG(iotype); | |
172 | # endif | |
71ab4674 SP |
173 | if (my_binmode(fp, iotype, mode) != FALSE) |
174 | return 1; | |
175 | else | |
176 | return 0; | |
177 | # else | |
178 | PERL_UNUSED_ARG(fp); | |
179 | PERL_UNUSED_ARG(iotype); | |
180 | PERL_UNUSED_ARG(mode); | |
181 | return 1; | |
182 | # endif | |
183 | #endif | |
184 | } | |
185 | #endif /* sfio */ | |
186 | ||
06c7082d | 187 | #ifndef O_ACCMODE |
22569500 | 188 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
189 | #endif |
190 | ||
191 | int | |
192 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
193 | { | |
de009b76 | 194 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
195 | int ix = 0; |
196 | int ptype; | |
197 | switch (result) { | |
198 | case O_RDONLY: | |
199 | ptype = IoTYPE_RDONLY; | |
200 | break; | |
201 | case O_WRONLY: | |
202 | ptype = IoTYPE_WRONLY; | |
203 | break; | |
204 | case O_RDWR: | |
205 | default: | |
206 | ptype = IoTYPE_RDWR; | |
207 | break; | |
208 | } | |
209 | if (writing) | |
210 | *writing = (result != O_RDONLY); | |
211 | ||
212 | if (result == O_RDONLY) { | |
213 | mode[ix++] = 'r'; | |
214 | } | |
215 | #ifdef O_APPEND | |
216 | else if (rawmode & O_APPEND) { | |
217 | mode[ix++] = 'a'; | |
218 | if (result != O_WRONLY) | |
219 | mode[ix++] = '+'; | |
220 | } | |
221 | #endif | |
222 | else { | |
223 | if (result == O_WRONLY) | |
224 | mode[ix++] = 'w'; | |
225 | else { | |
226 | mode[ix++] = 'r'; | |
227 | mode[ix++] = '+'; | |
228 | } | |
229 | } | |
230 | if (rawmode & O_BINARY) | |
231 | mode[ix++] = 'b'; | |
232 | mode[ix] = '\0'; | |
233 | return ptype; | |
234 | } | |
235 | ||
eb73beca NIS |
236 | #ifndef PERLIO_LAYERS |
237 | int | |
238 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
239 | { | |
6874a2de NIS |
240 | if (!names || !*names |
241 | || strEQ(names, ":crlf") | |
242 | || strEQ(names, ":raw") | |
243 | || strEQ(names, ":bytes") | |
244 | ) { | |
14a5cf38 JH |
245 | return 0; |
246 | } | |
247 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
248 | /* | |
71200d45 | 249 | * NOTREACHED |
14a5cf38 JH |
250 | */ |
251 | return -1; | |
eb73beca NIS |
252 | } |
253 | ||
13621cfb NIS |
254 | void |
255 | PerlIO_destruct(pTHX) | |
256 | { | |
257 | } | |
258 | ||
f5b9d040 NIS |
259 | int |
260 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
261 | { | |
92bff44d | 262 | #ifdef USE_SFIO |
8772537c AL |
263 | PERL_UNUSED_ARG(iotype); |
264 | PERL_UNUSED_ARG(mode); | |
265 | PERL_UNUSED_ARG(names); | |
14a5cf38 | 266 | return 1; |
92bff44d | 267 | #else |
14a5cf38 | 268 | return perlsio_binmode(fp, iotype, mode); |
92bff44d | 269 | #endif |
f5b9d040 | 270 | } |
60382766 | 271 | |
e0fa5af2 | 272 | PerlIO * |
ecdeb87c | 273 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 274 | { |
a0fd4948 | 275 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
276 | return NULL; |
277 | #else | |
278 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 279 | return PerlSIO_fdupopen(f); |
0553478e | 280 | #else |
30753f56 NIS |
281 | #ifdef WIN32 |
282 | return win32_fdupopen(f); | |
283 | #else | |
e0fa5af2 | 284 | if (f) { |
504618e9 | 285 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 286 | if (fd >= 0) { |
06c7082d | 287 | char mode[8]; |
a5936e02 | 288 | #ifdef DJGPP |
dcda55fc AL |
289 | const int omode = djgpp_get_stream_mode(f); |
290 | #else | |
291 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 292 | #endif |
06c7082d | 293 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 294 | /* the r+ is a hack */ |
06c7082d | 295 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
296 | } |
297 | return NULL; | |
298 | } | |
299 | else { | |
93189314 | 300 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 301 | } |
7114a2d2 | 302 | #endif |
e0fa5af2 | 303 | return NULL; |
0553478e | 304 | #endif |
30753f56 | 305 | #endif |
e0fa5af2 NIS |
306 | } |
307 | ||
308 | ||
14a5cf38 | 309 | /* |
71200d45 | 310 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 311 | */ |
ee518936 NIS |
312 | |
313 | PerlIO * | |
14a5cf38 JH |
314 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
315 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
316 | { | |
7cf31beb NIS |
317 | if (narg) { |
318 | if (narg > 1) { | |
3b8752bb | 319 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 320 | } |
14a5cf38 JH |
321 | if (*args == &PL_sv_undef) |
322 | return PerlIO_tmpfile(); | |
323 | else { | |
e62f0680 | 324 | const char *name = SvPV_nolen_const(*args); |
3b6c1aba | 325 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
326 | fd = PerlLIO_open3(name, imode, perm); |
327 | if (fd >= 0) | |
de009b76 | 328 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
329 | } |
330 | else if (old) { | |
331 | return PerlIO_reopen(name, mode, old); | |
332 | } | |
333 | else { | |
334 | return PerlIO_open(name, mode); | |
335 | } | |
336 | } | |
337 | } | |
338 | else { | |
339 | return PerlIO_fdopen(fd, (char *) mode); | |
340 | } | |
341 | return NULL; | |
ee518936 NIS |
342 | } |
343 | ||
0c4f7ff0 NIS |
344 | XS(XS_PerlIO__Layer__find) |
345 | { | |
14a5cf38 JH |
346 | dXSARGS; |
347 | if (items < 2) | |
348 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
349 | else { | |
dcda55fc | 350 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
351 | ST(0) = (strEQ(name, "crlf") |
352 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
353 | XSRETURN(1); | |
354 | } | |
0c4f7ff0 NIS |
355 | } |
356 | ||
357 | ||
358 | void | |
359 | Perl_boot_core_PerlIO(pTHX) | |
360 | { | |
14a5cf38 | 361 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
362 | } |
363 | ||
ac27b0f5 NIS |
364 | #endif |
365 | ||
32e30700 | 366 | |
6f9d8c32 | 367 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
368 | |
369 | void | |
e8632036 | 370 | PerlIO_init(pTHX) |
760ac839 | 371 | { |
96a5add6 | 372 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
373 | /* |
374 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 375 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 376 | * that may be required by loadable extensions e.g. for |
71200d45 | 377 | * FileHandle::tmpfile |
14a5cf38 | 378 | */ |
760ac839 LW |
379 | } |
380 | ||
33dcbb9a | 381 | #undef PerlIO_tmpfile |
382 | PerlIO * | |
8ac85365 | 383 | PerlIO_tmpfile(void) |
33dcbb9a | 384 | { |
14a5cf38 | 385 | return tmpfile(); |
33dcbb9a | 386 | } |
387 | ||
22569500 | 388 | #else /* PERLIO_IS_STDIO */ |
760ac839 LW |
389 | |
390 | #ifdef USE_SFIO | |
391 | ||
392 | #undef HAS_FSETPOS | |
393 | #undef HAS_FGETPOS | |
394 | ||
14a5cf38 JH |
395 | /* |
396 | * This section is just to make sure these functions get pulled in from | |
71200d45 | 397 | * libsfio.a |
14a5cf38 | 398 | */ |
760ac839 LW |
399 | |
400 | #undef PerlIO_tmpfile | |
401 | PerlIO * | |
c78749f2 | 402 | PerlIO_tmpfile(void) |
760ac839 | 403 | { |
14a5cf38 | 404 | return sftmp(0); |
760ac839 LW |
405 | } |
406 | ||
407 | void | |
e8632036 | 408 | PerlIO_init(pTHX) |
760ac839 | 409 | { |
96a5add6 | 410 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
411 | /* |
412 | * Force this file to be included in perl binary. Which allows this | |
413 | * file to force inclusion of other functions that may be required by | |
71200d45 | 414 | * loadable extensions e.g. for FileHandle::tmpfile |
14a5cf38 | 415 | */ |
760ac839 | 416 | |
14a5cf38 | 417 | /* |
71200d45 | 418 | * Hack sfio does its own 'autoflush' on stdout in common cases. Flush |
14a5cf38 | 419 | * results in a lot of lseek()s to regular files and lot of small |
71200d45 | 420 | * writes to pipes. |
14a5cf38 JH |
421 | */ |
422 | sfset(sfstdout, SF_SHARE, 0); | |
760ac839 LW |
423 | } |
424 | ||
b9d6bf13 | 425 | /* This is not the reverse of PerlIO_exportFILE(), PerlIO_releaseFILE() is. */ |
92bff44d | 426 | PerlIO * |
4b069b44 | 427 | PerlIO_importFILE(FILE *stdio, const char *mode) |
92bff44d | 428 | { |
de009b76 | 429 | const int fd = fileno(stdio); |
4b069b44 | 430 | if (!mode || !*mode) { |
81428673 | 431 | mode = "r+"; |
4b069b44 NIS |
432 | } |
433 | return PerlIO_fdopen(fd, mode); | |
92bff44d NIS |
434 | } |
435 | ||
436 | FILE * | |
437 | PerlIO_findFILE(PerlIO *pio) | |
438 | { | |
de009b76 AL |
439 | const int fd = PerlIO_fileno(pio); |
440 | FILE * const f = fdopen(fd, "r+"); | |
14a5cf38 JH |
441 | PerlIO_flush(pio); |
442 | if (!f && errno == EINVAL) | |
443 | f = fdopen(fd, "w"); | |
444 | if (!f && errno == EINVAL) | |
445 | f = fdopen(fd, "r"); | |
446 | return f; | |
92bff44d NIS |
447 | } |
448 | ||
449 | ||
22569500 | 450 | #else /* USE_SFIO */ |
6f9d8c32 | 451 | /*======================================================================================*/ |
14a5cf38 | 452 | /* |
71200d45 | 453 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 454 | */ |
760ac839 | 455 | |
76ced9ad NIS |
456 | #include "perliol.h" |
457 | ||
6f9d8c32 | 458 | void |
14a5cf38 JH |
459 | PerlIO_debug(const char *fmt, ...) |
460 | { | |
14a5cf38 JH |
461 | va_list ap; |
462 | dSYS; | |
463 | va_start(ap, fmt); | |
582588d2 | 464 | if (!PL_perlio_debug_fd) { |
985213f2 AB |
465 | if (!PL_tainting && |
466 | PerlProc_getuid() == PerlProc_geteuid() && | |
467 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
468 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
469 | if (s && *s) | |
470 | PL_perlio_debug_fd | |
471 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
472 | else | |
473 | PL_perlio_debug_fd = -1; | |
474 | } else { | |
475 | /* tainting or set*id, so ignore the environment, and ensure we | |
476 | skip these tests next time through. */ | |
27da23d5 | 477 | PL_perlio_debug_fd = -1; |
582588d2 | 478 | } |
14a5cf38 | 479 | } |
27da23d5 | 480 | if (PL_perlio_debug_fd > 0) { |
14a5cf38 | 481 | dTHX; |
70ace5da | 482 | #ifdef USE_ITHREADS |
dcda55fc | 483 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
484 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
485 | char buffer[1024]; | |
1208b3dd JH |
486 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
487 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
488 | PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); | |
70ace5da | 489 | #else |
dcda55fc AL |
490 | const char *s = CopFILE(PL_curcop); |
491 | STRLEN len; | |
550e2ce0 NC |
492 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
493 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
494 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
495 | ||
b83604b4 | 496 | s = SvPV_const(sv, len); |
27da23d5 | 497 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 498 | SvREFCNT_dec(sv); |
70ace5da | 499 | #endif |
14a5cf38 JH |
500 | } |
501 | va_end(ap); | |
6f9d8c32 NIS |
502 | } |
503 | ||
9e353e3b NIS |
504 | /*--------------------------------------------------------------------------------------*/ |
505 | ||
14a5cf38 | 506 | /* |
71200d45 | 507 | * Inner level routines |
14a5cf38 | 508 | */ |
9e353e3b | 509 | |
16865ff7 DM |
510 | /* check that the head field of each layer points back to the head */ |
511 | ||
512 | #ifdef DEBUGGING | |
513 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
514 | static void | |
515 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
516 | { | |
517 | PerlIOl *head, *p; | |
518 | int seen = 0; | |
519 | if (!PerlIOValid(f)) | |
520 | return; | |
521 | p = head = PerlIOBase(f)->head; | |
522 | assert(p); | |
523 | do { | |
524 | assert(p->head == head); | |
525 | if (p == (PerlIOl*)f) | |
526 | seen = 1; | |
527 | p = p->next; | |
528 | } while (p); | |
529 | assert(seen); | |
530 | } | |
531 | #else | |
532 | # define VERIFY_HEAD(f) | |
533 | #endif | |
534 | ||
535 | ||
14a5cf38 | 536 | /* |
71200d45 | 537 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 538 | */ |
05d1247b | 539 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 540 | |
8995e67d DM |
541 | static void |
542 | PerlIO_init_table(pTHX) | |
543 | { | |
544 | if (PL_perlio) | |
545 | return; | |
546 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
547 | } | |
548 | ||
549 | ||
550 | ||
760ac839 | 551 | PerlIO * |
5f1a76d0 | 552 | PerlIO_allocate(pTHX) |
6f9d8c32 | 553 | { |
97aff369 | 554 | dVAR; |
14a5cf38 | 555 | /* |
71200d45 | 556 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 557 | */ |
303f2dc3 DM |
558 | PerlIOl **last; |
559 | PerlIOl *f; | |
a1ea730d | 560 | last = &PL_perlio; |
14a5cf38 JH |
561 | while ((f = *last)) { |
562 | int i; | |
303f2dc3 | 563 | last = (PerlIOl **) (f); |
14a5cf38 | 564 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 565 | if (!((++f)->next)) { |
abf9167d | 566 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 567 | f->tab = NULL; |
16865ff7 | 568 | f->head = f; |
303f2dc3 | 569 | return (PerlIO *)f; |
14a5cf38 JH |
570 | } |
571 | } | |
572 | } | |
303f2dc3 | 573 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
574 | if (!f) { |
575 | return NULL; | |
576 | } | |
303f2dc3 | 577 | *last = (PerlIOl*) f++; |
abf9167d | 578 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 579 | f->tab = NULL; |
16865ff7 | 580 | f->head = f; |
303f2dc3 | 581 | return (PerlIO*) f; |
05d1247b NIS |
582 | } |
583 | ||
a1ea730d NIS |
584 | #undef PerlIO_fdupopen |
585 | PerlIO * | |
ecdeb87c | 586 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 587 | { |
04892f78 | 588 | if (PerlIOValid(f)) { |
de009b76 | 589 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 590 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
591 | if (tab && tab->Dup) |
592 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
593 | else { |
594 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
595 | } | |
a1ea730d | 596 | } |
210e727c JH |
597 | else |
598 | SETERRNO(EBADF, SS_IVCHAN); | |
599 | ||
600 | return NULL; | |
a1ea730d NIS |
601 | } |
602 | ||
603 | void | |
303f2dc3 | 604 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 605 | { |
303f2dc3 | 606 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
607 | if (table) { |
608 | int i; | |
303f2dc3 | 609 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 610 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
611 | PerlIOl * const f = table + i; |
612 | if (f->next) { | |
613 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
614 | } |
615 | } | |
3a1ee7e8 | 616 | Safefree(table); |
14a5cf38 | 617 | *tablep = NULL; |
05d1247b | 618 | } |
05d1247b NIS |
619 | } |
620 | ||
fcf2db38 NIS |
621 | |
622 | PerlIO_list_t * | |
3a1ee7e8 | 623 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 624 | { |
14a5cf38 | 625 | PerlIO_list_t *list; |
96a5add6 | 626 | PERL_UNUSED_CONTEXT; |
a02a5408 | 627 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
628 | list->refcnt = 1; |
629 | return list; | |
fcf2db38 NIS |
630 | } |
631 | ||
632 | void | |
3a1ee7e8 | 633 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 634 | { |
14a5cf38 JH |
635 | if (list) { |
636 | if (--list->refcnt == 0) { | |
637 | if (list->array) { | |
14a5cf38 | 638 | IV i; |
ef8d46e8 VP |
639 | for (i = 0; i < list->cur; i++) |
640 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
641 | Safefree(list->array); |
642 | } | |
643 | Safefree(list); | |
644 | } | |
645 | } | |
fcf2db38 NIS |
646 | } |
647 | ||
648 | void | |
3a1ee7e8 | 649 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 650 | { |
97aff369 | 651 | dVAR; |
334e202e | 652 | PerlIO_pair_t *p; |
b37c2d43 AL |
653 | PERL_UNUSED_CONTEXT; |
654 | ||
14a5cf38 JH |
655 | if (list->cur >= list->len) { |
656 | list->len += 8; | |
657 | if (list->array) | |
658 | Renew(list->array, list->len, PerlIO_pair_t); | |
659 | else | |
a02a5408 | 660 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
661 | } |
662 | p = &(list->array[list->cur++]); | |
663 | p->funcs = funcs; | |
664 | if ((p->arg = arg)) { | |
f84c484e | 665 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 666 | } |
fcf2db38 NIS |
667 | } |
668 | ||
3a1ee7e8 NIS |
669 | PerlIO_list_t * |
670 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
671 | { | |
b37c2d43 | 672 | PerlIO_list_t *list = NULL; |
694c95cf JH |
673 | if (proto) { |
674 | int i; | |
675 | list = PerlIO_list_alloc(aTHX); | |
676 | for (i=0; i < proto->cur; i++) { | |
a951d81d BL |
677 | SV *arg = proto->array[i].arg; |
678 | #ifdef sv_dup | |
679 | if (arg && param) | |
680 | arg = sv_dup(arg, param); | |
681 | #else | |
682 | PERL_UNUSED_ARG(param); | |
683 | #endif | |
694c95cf JH |
684 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
685 | } | |
3a1ee7e8 NIS |
686 | } |
687 | return list; | |
688 | } | |
4a4a6116 | 689 | |
05d1247b | 690 | void |
3a1ee7e8 | 691 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 692 | { |
3aaf42a7 | 693 | #ifdef USE_ITHREADS |
303f2dc3 DM |
694 | PerlIOl **table = &proto->Iperlio; |
695 | PerlIOl *f; | |
3a1ee7e8 NIS |
696 | PL_perlio = NULL; |
697 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
698 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 699 | PerlIO_init_table(aTHX); |
a25429c6 | 700 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
701 | while ((f = *table)) { |
702 | int i; | |
303f2dc3 | 703 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 704 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
705 | if (f->next) { |
706 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
707 | } |
708 | f++; | |
709 | } | |
710 | } | |
1b6737cc | 711 | #else |
a25429c6 | 712 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
713 | PERL_UNUSED_ARG(proto); |
714 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 715 | #endif |
9a6404c5 DM |
716 | } |
717 | ||
718 | void | |
13621cfb NIS |
719 | PerlIO_destruct(pTHX) |
720 | { | |
97aff369 | 721 | dVAR; |
303f2dc3 DM |
722 | PerlIOl **table = &PL_perlio; |
723 | PerlIOl *f; | |
694c95cf | 724 | #ifdef USE_ITHREADS |
a25429c6 | 725 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 726 | #endif |
14a5cf38 JH |
727 | while ((f = *table)) { |
728 | int i; | |
303f2dc3 | 729 | table = (PerlIOl **) (f++); |
14a5cf38 | 730 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 731 | PerlIO *x = &(f->next); |
dcda55fc | 732 | const PerlIOl *l; |
14a5cf38 | 733 | while ((l = *x)) { |
cc6623a8 | 734 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
735 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
736 | PerlIO_flush(x); | |
737 | PerlIO_pop(aTHX_ x); | |
738 | } | |
739 | else { | |
740 | x = PerlIONext(x); | |
741 | } | |
742 | } | |
743 | f++; | |
744 | } | |
745 | } | |
13621cfb NIS |
746 | } |
747 | ||
748 | void | |
a999f61b | 749 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 750 | { |
dcda55fc | 751 | const PerlIOl *l = *f; |
16865ff7 | 752 | VERIFY_HEAD(f); |
14a5cf38 | 753 | if (l) { |
cc6623a8 DM |
754 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
755 | l->tab ? l->tab->name : "(Null)"); | |
756 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
757 | /* |
758 | * If popped returns non-zero do not free its layer structure | |
759 | * it has either done so itself, or it is shared and still in | |
71200d45 | 760 | * use |
14a5cf38 | 761 | */ |
f62ce20a | 762 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
763 | return; |
764 | } | |
abf9167d DM |
765 | if (PerlIO_lockcnt(f)) { |
766 | /* we're in use; defer freeing the structure */ | |
767 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
768 | PerlIOBase(f)->tab = NULL; | |
769 | } | |
770 | else { | |
771 | *f = l->next; | |
772 | Safefree(l); | |
773 | } | |
774 | ||
a8c08ecd | 775 | } |
6f9d8c32 NIS |
776 | } |
777 | ||
39f7a870 JH |
778 | /* Return as an array the stack of layers on a filehandle. Note that |
779 | * the stack is returned top-first in the array, and there are three | |
780 | * times as many array elements as there are layers in the stack: the | |
781 | * first element of a layer triplet is the name, the second one is the | |
782 | * arguments, and the third one is the flags. */ | |
783 | ||
784 | AV * | |
785 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
786 | { | |
97aff369 | 787 | dVAR; |
dcda55fc | 788 | AV * const av = newAV(); |
39f7a870 | 789 | |
dcda55fc AL |
790 | if (PerlIOValid(f)) { |
791 | PerlIOl *l = PerlIOBase(f); | |
792 | ||
793 | while (l) { | |
92e45a3e NC |
794 | /* There is some collusion in the implementation of |
795 | XS_PerlIO_get_layers - it knows that name and flags are | |
796 | generated as fresh SVs here, and takes advantage of that to | |
797 | "copy" them by taking a reference. If it changes here, it needs | |
798 | to change there too. */ | |
dcda55fc AL |
799 | SV * const name = l->tab && l->tab->name ? |
800 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
801 | SV * const arg = l->tab && l->tab->Getarg ? | |
802 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
803 | av_push(av, name); | |
804 | av_push(av, arg); | |
805 | av_push(av, newSViv((IV)l->flags)); | |
806 | l = l->next; | |
807 | } | |
808 | } | |
39f7a870 | 809 | |
dcda55fc | 810 | return av; |
39f7a870 JH |
811 | } |
812 | ||
9e353e3b | 813 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 814 | /* |
71200d45 | 815 | * XS Interface for perl code |
14a5cf38 | 816 | */ |
9e353e3b | 817 | |
fcf2db38 | 818 | PerlIO_funcs * |
2edd7e44 | 819 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 820 | { |
27da23d5 | 821 | dVAR; |
14a5cf38 JH |
822 | IV i; |
823 | if ((SSize_t) len <= 0) | |
824 | len = strlen(name); | |
3a1ee7e8 | 825 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 826 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 827 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 828 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
829 | return f; |
830 | } | |
831 | } | |
3a1ee7e8 NIS |
832 | if (load && PL_subname && PL_def_layerlist |
833 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
834 | if (PL_in_load_module) { |
835 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
836 | return NULL; | |
837 | } else { | |
396482e1 | 838 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 839 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 840 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 841 | ENTER; |
4fa7c2bf | 842 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 843 | if (cv) { |
9cfa90c0 | 844 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 845 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 846 | } |
4fa7c2bf | 847 | PL_in_load_module = TRUE; |
d7a09b41 SR |
848 | /* |
849 | * The two SVs are magically freed by load_module | |
850 | */ | |
a0714e2c | 851 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
852 | LEAVE; |
853 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
854 | } | |
14a5cf38 JH |
855 | } |
856 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
857 | return NULL; | |
f3862f8b NIS |
858 | } |
859 | ||
2a1bc955 | 860 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
861 | |
862 | static int | |
863 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
864 | { | |
14a5cf38 | 865 | if (SvROK(sv)) { |
159b6efe | 866 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
867 | PerlIO * const ifp = IoIFP(io); |
868 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
869 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
870 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
871 | } |
872 | return 0; | |
b13b2135 NIS |
873 | } |
874 | ||
875 | static int | |
876 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
877 | { | |
14a5cf38 | 878 | if (SvROK(sv)) { |
159b6efe | 879 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
880 | PerlIO * const ifp = IoIFP(io); |
881 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
882 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
883 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
884 | } |
885 | return 0; | |
b13b2135 NIS |
886 | } |
887 | ||
888 | static int | |
889 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
890 | { | |
be2597df | 891 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 892 | return 0; |
b13b2135 NIS |
893 | } |
894 | ||
895 | static int | |
896 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
897 | { | |
be2597df | 898 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 899 | return 0; |
b13b2135 NIS |
900 | } |
901 | ||
902 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
903 | perlio_mg_get, |
904 | perlio_mg_set, | |
22569500 | 905 | NULL, /* len */ |
14a5cf38 JH |
906 | perlio_mg_clear, |
907 | perlio_mg_free | |
b13b2135 NIS |
908 | }; |
909 | ||
910 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
911 | { | |
14a5cf38 | 912 | dXSARGS; |
dcda55fc AL |
913 | SV * const sv = SvRV(ST(1)); |
914 | AV * const av = newAV(); | |
14a5cf38 JH |
915 | MAGIC *mg; |
916 | int count = 0; | |
917 | int i; | |
ad64d0ec | 918 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
919 | SvRMAGICAL_off(sv); |
920 | mg = mg_find(sv, PERL_MAGIC_ext); | |
921 | mg->mg_virtual = &perlio_vtab; | |
922 | mg_magical(sv); | |
be2597df | 923 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
924 | for (i = 2; i < items; i++) { |
925 | STRLEN len; | |
dcda55fc AL |
926 | const char * const name = SvPV_const(ST(i), len); |
927 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 928 | if (layer) { |
b37c2d43 | 929 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
930 | } |
931 | else { | |
932 | ST(count) = ST(i); | |
933 | count++; | |
934 | } | |
935 | } | |
936 | SvREFCNT_dec(av); | |
937 | XSRETURN(count); | |
938 | } | |
939 | ||
22569500 | 940 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 941 | |
e3f3bf95 NIS |
942 | SV * |
943 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 944 | { |
da51bb9b | 945 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 946 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 947 | return sv; |
e3f3bf95 NIS |
948 | } |
949 | ||
5ca1d77f | 950 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 951 | { |
486ec47a | 952 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
953 | during loading of layers. |
954 | */ | |
97aff369 | 955 | dVAR; |
c9bca74a | 956 | dXSARGS; |
58c0efa5 | 957 | PERL_UNUSED_ARG(cv); |
c9bca74a | 958 | if (items) |
e62f0680 | 959 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
960 | XSRETURN(0); |
961 | } | |
962 | ||
5ca1d77f | 963 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 964 | { |
97aff369 | 965 | dVAR; |
14a5cf38 | 966 | dXSARGS; |
58c0efa5 | 967 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
968 | if (items < 2) |
969 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
970 | else { | |
de009b76 | 971 | STRLEN len; |
46c461b5 | 972 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 973 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 974 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
975 | ST(0) = |
976 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
977 | &PL_sv_undef; | |
978 | XSRETURN(1); | |
979 | } | |
0c4f7ff0 NIS |
980 | } |
981 | ||
e3f3bf95 NIS |
982 | void |
983 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
984 | { | |
97aff369 | 985 | dVAR; |
3a1ee7e8 NIS |
986 | if (!PL_known_layers) |
987 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 988 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 989 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
990 | } |
991 | ||
1141d9f8 | 992 | int |
fcf2db38 | 993 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 994 | { |
97aff369 | 995 | dVAR; |
14a5cf38 JH |
996 | if (names) { |
997 | const char *s = names; | |
998 | while (*s) { | |
999 | while (isSPACE(*s) || *s == ':') | |
1000 | s++; | |
1001 | if (*s) { | |
1002 | STRLEN llen = 0; | |
1003 | const char *e = s; | |
bd61b366 | 1004 | const char *as = NULL; |
14a5cf38 JH |
1005 | STRLEN alen = 0; |
1006 | if (!isIDFIRST(*s)) { | |
1007 | /* | |
1008 | * Message is consistent with how attribute lists are | |
1009 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 1010 | * seen as an invalid separator character. |
14a5cf38 | 1011 | */ |
de009b76 | 1012 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
1013 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1014 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
1015 | q, *s, q, s); | |
93189314 | 1016 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1017 | return -1; |
1018 | } | |
1019 | do { | |
1020 | e++; | |
1021 | } while (isALNUM(*e)); | |
1022 | llen = e - s; | |
1023 | if (*e == '(') { | |
1024 | int nesting = 1; | |
1025 | as = ++e; | |
1026 | while (nesting) { | |
1027 | switch (*e++) { | |
1028 | case ')': | |
1029 | if (--nesting == 0) | |
1030 | alen = (e - 1) - as; | |
1031 | break; | |
1032 | case '(': | |
1033 | ++nesting; | |
1034 | break; | |
1035 | case '\\': | |
1036 | /* | |
1037 | * It's a nul terminated string, not allowed | |
1038 | * to \ the terminating null. Anything other | |
71200d45 | 1039 | * character is passed over. |
14a5cf38 JH |
1040 | */ |
1041 | if (*e++) { | |
1042 | break; | |
1043 | } | |
1044 | /* | |
71200d45 | 1045 | * Drop through |
14a5cf38 JH |
1046 | */ |
1047 | case '\0': | |
1048 | e--; | |
a2a5de95 NC |
1049 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1050 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
1051 | (int) (e - s), s); | |
14a5cf38 JH |
1052 | return -1; |
1053 | default: | |
1054 | /* | |
71200d45 | 1055 | * boring. |
14a5cf38 JH |
1056 | */ |
1057 | break; | |
1058 | } | |
1059 | } | |
1060 | } | |
1061 | if (e > s) { | |
46c461b5 | 1062 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1063 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1064 | if (layer) { | |
a951d81d BL |
1065 | SV *arg = NULL; |
1066 | if (as) | |
1067 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1068 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 1069 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 1070 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1071 | } |
1072 | else { | |
a2a5de95 NC |
1073 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
1074 | (int) llen, s); | |
14a5cf38 JH |
1075 | return -1; |
1076 | } | |
1077 | } | |
1078 | s = e; | |
1079 | } | |
1080 | } | |
1081 | } | |
1082 | return 0; | |
1141d9f8 NIS |
1083 | } |
1084 | ||
dfebf958 | 1085 | void |
fcf2db38 | 1086 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1087 | { |
97aff369 | 1088 | dVAR; |
27da23d5 | 1089 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1090 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1091 | tab = &PerlIO_crlf; |
846be114 | 1092 | #else |
6ce75a77 | 1093 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1094 | tab = &PerlIO_stdio; |
846be114 | 1095 | #endif |
14a5cf38 | 1096 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1097 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1098 | &PL_sv_undef); |
dfebf958 NIS |
1099 | } |
1100 | ||
e3f3bf95 | 1101 | SV * |
14a5cf38 | 1102 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1103 | { |
14a5cf38 | 1104 | return av->array[n].arg; |
e3f3bf95 NIS |
1105 | } |
1106 | ||
f3862f8b | 1107 | PerlIO_funcs * |
14a5cf38 | 1108 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1109 | { |
14a5cf38 JH |
1110 | if (n >= 0 && n < av->cur) { |
1111 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1112 | av->array[n].funcs->name); | |
1113 | return av->array[n].funcs; | |
1114 | } | |
1115 | if (!def) | |
1116 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1117 | return def; | |
e3f3bf95 NIS |
1118 | } |
1119 | ||
4ec2216f NIS |
1120 | IV |
1121 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1122 | { | |
8772537c AL |
1123 | PERL_UNUSED_ARG(mode); |
1124 | PERL_UNUSED_ARG(arg); | |
1125 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1126 | if (PerlIOValid(f)) { |
1127 | PerlIO_flush(f); | |
1128 | PerlIO_pop(aTHX_ f); | |
1129 | return 0; | |
1130 | } | |
1131 | return -1; | |
1132 | } | |
1133 | ||
27da23d5 | 1134 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1135 | sizeof(PerlIO_funcs), |
1136 | "pop", | |
1137 | 0, | |
1138 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1139 | PerlIOPop_pushed, | |
1140 | NULL, | |
c0888ace | 1141 | PerlIOBase_open, |
4ec2216f NIS |
1142 | NULL, |
1143 | NULL, | |
1144 | NULL, | |
1145 | NULL, | |
1146 | NULL, | |
1147 | NULL, | |
1148 | NULL, | |
1149 | NULL, | |
de009b76 AL |
1150 | NULL, |
1151 | NULL, | |
4ec2216f NIS |
1152 | NULL, /* flush */ |
1153 | NULL, /* fill */ | |
1154 | NULL, | |
1155 | NULL, | |
1156 | NULL, | |
1157 | NULL, | |
1158 | NULL, /* get_base */ | |
1159 | NULL, /* get_bufsiz */ | |
1160 | NULL, /* get_ptr */ | |
1161 | NULL, /* get_cnt */ | |
1162 | NULL, /* set_ptrcnt */ | |
1163 | }; | |
1164 | ||
fcf2db38 | 1165 | PerlIO_list_t * |
e3f3bf95 NIS |
1166 | PerlIO_default_layers(pTHX) |
1167 | { | |
97aff369 | 1168 | dVAR; |
3a1ee7e8 | 1169 | if (!PL_def_layerlist) { |
bd61b366 | 1170 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1171 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1172 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1173 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1174 | #if defined(WIN32) |
27da23d5 | 1175 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1176 | #if 0 |
14a5cf38 | 1177 | osLayer = &PerlIO_win32; |
0c4128ad | 1178 | #endif |
2f8118af | 1179 | #endif |
27da23d5 JH |
1180 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1181 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1182 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1183 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1184 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1185 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1186 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1187 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1188 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1189 | &PL_sv_undef); | |
1190 | if (s) { | |
3a1ee7e8 | 1191 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1192 | } |
1193 | else { | |
3a1ee7e8 | 1194 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1195 | } |
1141d9f8 | 1196 | } |
3a1ee7e8 NIS |
1197 | if (PL_def_layerlist->cur < 2) { |
1198 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1199 | } |
3a1ee7e8 | 1200 | return PL_def_layerlist; |
e3f3bf95 NIS |
1201 | } |
1202 | ||
0c4f7ff0 NIS |
1203 | void |
1204 | Perl_boot_core_PerlIO(pTHX) | |
1205 | { | |
1206 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1207 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1208 | __FILE__); | |
0c4f7ff0 | 1209 | #endif |
14a5cf38 | 1210 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1211 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1212 | } |
e3f3bf95 NIS |
1213 | |
1214 | PerlIO_funcs * | |
1215 | PerlIO_default_layer(pTHX_ I32 n) | |
1216 | { | |
97aff369 | 1217 | dVAR; |
46c461b5 | 1218 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1219 | if (n < 0) |
1220 | n += av->cur; | |
27da23d5 | 1221 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1222 | } |
1223 | ||
a999f61b NIS |
1224 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1225 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1226 | |
1227 | void | |
1141d9f8 | 1228 | PerlIO_stdstreams(pTHX) |
60382766 | 1229 | { |
97aff369 | 1230 | dVAR; |
a1ea730d | 1231 | if (!PL_perlio) { |
8995e67d | 1232 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1233 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1234 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1235 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1236 | } | |
60382766 NIS |
1237 | } |
1238 | ||
1239 | PerlIO * | |
27da23d5 | 1240 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1241 | { |
16865ff7 | 1242 | VERIFY_HEAD(f); |
2dc2558e | 1243 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1244 | Perl_croak( aTHX_ |
5cf96513 RB |
1245 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1246 | "PerlIO layer function table size", (UV)tab->fsize, | |
1247 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1248 | } |
1249 | if (tab->size) { | |
b464bac0 | 1250 | PerlIOl *l; |
2dc2558e | 1251 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1252 | Perl_croak( aTHX_ |
5cf96513 RB |
1253 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1254 | "PerlIO layer instance size", (UV)tab->size, | |
1255 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1256 | } |
1257 | /* Real layer with a data area */ | |
002e75cf JH |
1258 | if (f) { |
1259 | char *temp; | |
1260 | Newxz(temp, tab->size, char); | |
1261 | l = (PerlIOl*)temp; | |
1262 | if (l) { | |
1263 | l->next = *f; | |
1264 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1265 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1266 | *f = l; |
1267 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1268 | (void*)f, tab->name, | |
1269 | (mode) ? mode : "(Null)", (void*)arg); | |
1270 | if (*l->tab->Pushed && | |
1271 | (*l->tab->Pushed) | |
1272 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1273 | PerlIO_pop(aTHX_ f); | |
1274 | return NULL; | |
1275 | } | |
2dc2558e | 1276 | } |
002e75cf JH |
1277 | else |
1278 | return NULL; | |
2dc2558e NIS |
1279 | } |
1280 | } | |
1281 | else if (f) { | |
1282 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1283 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1284 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1285 | if (tab->Pushed && |
27da23d5 | 1286 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1287 | return NULL; |
14a5cf38 JH |
1288 | } |
1289 | } | |
1290 | return f; | |
60382766 NIS |
1291 | } |
1292 | ||
81fe74fb LT |
1293 | PerlIO * |
1294 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1295 | IV n, const char *mode, int fd, int imode, int perm, | |
1296 | PerlIO *old, int narg, SV **args) | |
1297 | { | |
1298 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1299 | if (tab && tab->Open) { | |
1300 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1301 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1302 | PerlIO_close(ret); |
1303 | return NULL; | |
1304 | } | |
1305 | return ret; | |
1306 | } | |
1307 | SETERRNO(EINVAL, LIB_INVARG); | |
1308 | return NULL; | |
1309 | } | |
1310 | ||
dfebf958 | 1311 | IV |
86e05cf2 NIS |
1312 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1313 | { | |
1314 | if (PerlIOValid(f)) { | |
1315 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1316 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1317 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1318 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1319 | } | |
1320 | else { | |
1321 | /* Not suitable - pop it */ | |
1322 | PerlIO_pop(aTHX_ f); | |
1323 | } | |
1324 | return 0; | |
1325 | } | |
1326 | return -1; | |
1327 | } | |
1328 | ||
1329 | IV | |
2dc2558e | 1330 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1331 | { |
8772537c AL |
1332 | PERL_UNUSED_ARG(mode); |
1333 | PERL_UNUSED_ARG(arg); | |
1334 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1335 | |
04892f78 | 1336 | if (PerlIOValid(f)) { |
86e05cf2 | 1337 | PerlIO *t; |
de009b76 | 1338 | const PerlIOl *l; |
14a5cf38 | 1339 | PerlIO_flush(f); |
86e05cf2 NIS |
1340 | /* |
1341 | * Strip all layers that are not suitable for a raw stream | |
1342 | */ | |
1343 | t = f; | |
1344 | while (t && (l = *t)) { | |
cc6623a8 | 1345 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1346 | /* Has a handler - normal case */ |
9d97e8b8 | 1347 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1348 | if (*t == l) { |
1349 | /* Layer still there - move down a layer */ | |
1350 | t = PerlIONext(t); | |
1351 | } | |
1352 | } | |
1353 | else { | |
1354 | return -1; | |
1355 | } | |
14a5cf38 JH |
1356 | } |
1357 | else { | |
86e05cf2 NIS |
1358 | /* No handler - pop it */ |
1359 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1360 | } |
1361 | } | |
86e05cf2 | 1362 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1363 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1364 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1365 | return 0; |
1366 | } | |
14a5cf38 JH |
1367 | } |
1368 | return -1; | |
dfebf958 NIS |
1369 | } |
1370 | ||
ac27b0f5 | 1371 | int |
14a5cf38 | 1372 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1373 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1374 | { |
14a5cf38 JH |
1375 | int code = 0; |
1376 | while (n < max) { | |
8772537c | 1377 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1378 | if (tab) { |
1379 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1380 | code = -1; | |
1381 | break; | |
1382 | } | |
1383 | } | |
1384 | n++; | |
1385 | } | |
1386 | return code; | |
e3f3bf95 NIS |
1387 | } |
1388 | ||
1389 | int | |
ac27b0f5 NIS |
1390 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1391 | { | |
14a5cf38 | 1392 | int code = 0; |
da0fccaa DG |
1393 | ENTER; |
1394 | save_scalar(PL_errgv); | |
53f1b6d2 | 1395 | if (f && names) { |
8772537c | 1396 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1397 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1398 | if (code == 0) { | |
d9dac8cd | 1399 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1400 | } |
3a1ee7e8 | 1401 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1402 | } |
da0fccaa | 1403 | LEAVE; |
14a5cf38 | 1404 | return code; |
ac27b0f5 NIS |
1405 | } |
1406 | ||
f3862f8b | 1407 | |
60382766 | 1408 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1409 | /* |
71200d45 | 1410 | * Given the abstraction above the public API functions |
14a5cf38 | 1411 | */ |
60382766 NIS |
1412 | |
1413 | int | |
f5b9d040 | 1414 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1415 | { |
68b5363f | 1416 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1417 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1418 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1419 | iotype, mode, (names) ? names : "(Null)"); |
1420 | ||
03c0554d NIS |
1421 | if (names) { |
1422 | /* Do not flush etc. if (e.g.) switching encodings. | |
1423 | if a pushed layer knows it needs to flush lower layers | |
1424 | (for example :unix which is never going to call them) | |
1425 | it can do the flush when it is pushed. | |
1426 | */ | |
1427 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1428 | } | |
1429 | else { | |
86e05cf2 | 1430 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1431 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1432 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1433 | O_BINARY so we can look for it in mode. | |
1434 | */ | |
1435 | if (!(mode & O_BINARY)) { | |
1436 | /* Text mode */ | |
86e05cf2 NIS |
1437 | /* FIXME?: Looking down the layer stack seems wrong, |
1438 | but is a way of reaching past (say) an encoding layer | |
1439 | to flip CRLF-ness of the layer(s) below | |
1440 | */ | |
03c0554d NIS |
1441 | while (*f) { |
1442 | /* Perhaps we should turn on bottom-most aware layer | |
1443 | e.g. Ilya's idea that UNIX TTY could serve | |
1444 | */ | |
cc6623a8 DM |
1445 | if (PerlIOBase(f)->tab && |
1446 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1447 | { | |
03c0554d NIS |
1448 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1449 | /* Not in text mode - flush any pending stuff and flip it */ | |
1450 | PerlIO_flush(f); | |
1451 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1452 | } | |
1453 | /* Only need to turn it on in one layer so we are done */ | |
1454 | return TRUE; | |
ed53a2bb | 1455 | } |
03c0554d | 1456 | f = PerlIONext(f); |
14a5cf38 | 1457 | } |
03c0554d NIS |
1458 | /* Not finding a CRLF aware layer presumably means we are binary |
1459 | which is not what was requested - so we failed | |
1460 | We _could_ push :crlf layer but so could caller | |
1461 | */ | |
1462 | return FALSE; | |
14a5cf38 | 1463 | } |
6ce75a77 | 1464 | #endif |
86e05cf2 NIS |
1465 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1466 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1467 | */ |
a0714e2c | 1468 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1469 | } |
f5b9d040 NIS |
1470 | } |
1471 | ||
f5b9d040 | 1472 | int |
e87a358a | 1473 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1474 | { |
37725cdc | 1475 | if (PerlIOValid(f)) { |
46c461b5 | 1476 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1477 | if (tab && tab->Close) |
1478 | return (*tab->Close)(aTHX_ f); | |
1479 | else | |
1480 | return PerlIOBase_close(aTHX_ f); | |
1481 | } | |
14a5cf38 | 1482 | else { |
93189314 | 1483 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1484 | return -1; |
1485 | } | |
76ced9ad NIS |
1486 | } |
1487 | ||
b931b1d9 | 1488 | int |
e87a358a | 1489 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1490 | { |
de009b76 | 1491 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1492 | while (PerlIOValid(f)) { |
1493 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1494 | if (PerlIO_lockcnt(f)) |
1495 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1496 | f = PerlIONext(f); | |
f6c77cf1 | 1497 | } |
14a5cf38 | 1498 | return code; |
b931b1d9 NIS |
1499 | } |
1500 | ||
b931b1d9 | 1501 | int |
e87a358a | 1502 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1503 | { |
97aff369 | 1504 | dVAR; |
b32dd47e | 1505 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1506 | } |
1507 | ||
1141d9f8 | 1508 | |
fcf2db38 | 1509 | static PerlIO_funcs * |
2edd7e44 NIS |
1510 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1511 | { | |
97aff369 | 1512 | dVAR; |
14a5cf38 | 1513 | /* |
71200d45 | 1514 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1515 | */ |
526fd1b4 | 1516 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1517 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1518 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1519 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1520 | if (!f) |
dcbac5bb | 1521 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1522 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1523 | return f; |
1524 | } | |
14a5cf38 JH |
1525 | |
1526 | /* | |
71200d45 | 1527 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1528 | */ |
1529 | switch (SvTYPE(sv)) { | |
1530 | case SVt_PVAV: | |
6a245ed1 | 1531 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1532 | case SVt_PVHV: |
6a245ed1 | 1533 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1534 | case SVt_PVCV: |
6a245ed1 | 1535 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1536 | case SVt_PVGV: |
6a245ed1 | 1537 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1538 | default: |
1539 | return NULL; | |
14a5cf38 | 1540 | } |
2edd7e44 NIS |
1541 | } |
1542 | ||
fcf2db38 | 1543 | PerlIO_list_t * |
14a5cf38 JH |
1544 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1545 | const char *mode, int narg, SV **args) | |
1546 | { | |
97aff369 | 1547 | dVAR; |
14a5cf38 JH |
1548 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1549 | int incdef = 1; | |
a1ea730d | 1550 | if (!PL_perlio) |
14a5cf38 JH |
1551 | PerlIO_stdstreams(aTHX); |
1552 | if (narg) { | |
dcda55fc | 1553 | SV * const arg = *args; |
14a5cf38 | 1554 | /* |
71200d45 NIS |
1555 | * If it is a reference but not an object see if we have a handler |
1556 | * for it | |
14a5cf38 JH |
1557 | */ |
1558 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1559 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1560 | if (handler) { |
3a1ee7e8 NIS |
1561 | def = PerlIO_list_alloc(aTHX); |
1562 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1563 | incdef = 0; |
1564 | } | |
1565 | /* | |
e934609f | 1566 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1567 | * something sensible else we will just stringfy and open |
71200d45 | 1568 | * resulting string. |
14a5cf38 JH |
1569 | */ |
1570 | } | |
1571 | } | |
9fe371da | 1572 | if (!layers || !*layers) |
11bcd5da | 1573 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1574 | if (layers && *layers) { |
1575 | PerlIO_list_t *av; | |
1576 | if (incdef) { | |
a951d81d | 1577 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1578 | } |
1579 | else { | |
1580 | av = def; | |
1581 | } | |
0cff2cf3 NIS |
1582 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1583 | return av; | |
1584 | } | |
1585 | else { | |
1586 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1587 | return NULL; |
0cff2cf3 | 1588 | } |
14a5cf38 JH |
1589 | } |
1590 | else { | |
1591 | if (incdef) | |
1592 | def->refcnt++; | |
1593 | return def; | |
1594 | } | |
ee518936 NIS |
1595 | } |
1596 | ||
1597 | PerlIO * | |
14a5cf38 JH |
1598 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1599 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1600 | { | |
97aff369 | 1601 | dVAR; |
14a5cf38 JH |
1602 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1603 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1604 | if (!layers || !*layers) |
11bcd5da | 1605 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1606 | if (layers && *layers) |
1607 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1608 | } | |
1609 | } | |
1610 | else { | |
de009b76 | 1611 | PerlIO_list_t *layera; |
14a5cf38 JH |
1612 | IV n; |
1613 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1614 | if (PerlIOValid(f)) { |
14a5cf38 | 1615 | /* |
71200d45 NIS |
1616 | * This is "reopen" - it is not tested as perl does not use it |
1617 | * yet | |
14a5cf38 JH |
1618 | */ |
1619 | PerlIOl *l = *f; | |
3a1ee7e8 | 1620 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1621 | while (l) { |
a951d81d | 1622 | SV *arg = NULL; |
cc6623a8 | 1623 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1624 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1625 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1626 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1627 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1628 | l = *PerlIONext(&l); |
1629 | } | |
1630 | } | |
1631 | else { | |
1632 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1633 | if (!layera) { |
1634 | return NULL; | |
1635 | } | |
14a5cf38 JH |
1636 | } |
1637 | /* | |
71200d45 | 1638 | * Start at "top" of layer stack |
14a5cf38 JH |
1639 | */ |
1640 | n = layera->cur - 1; | |
1641 | while (n >= 0) { | |
46c461b5 | 1642 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1643 | if (t && t->Open) { |
1644 | tab = t; | |
1645 | break; | |
1646 | } | |
1647 | n--; | |
1648 | } | |
1649 | if (tab) { | |
1650 | /* | |
71200d45 | 1651 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1652 | */ |
7cf31beb | 1653 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1654 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1655 | } |
14a5cf38 | 1656 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1657 | tab->name, layers ? layers : "(Null)", mode, fd, |
1658 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1659 | if (tab->Open) |
1660 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1661 | f, narg, args); | |
1662 | else { | |
1663 | SETERRNO(EINVAL, LIB_INVARG); | |
1664 | f = NULL; | |
1665 | } | |
14a5cf38 JH |
1666 | if (f) { |
1667 | if (n + 1 < layera->cur) { | |
1668 | /* | |
1669 | * More layers above the one that we used to open - | |
71200d45 | 1670 | * apply them now |
14a5cf38 | 1671 | */ |
d9dac8cd NIS |
1672 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1673 | /* If pushing layers fails close the file */ | |
1674 | PerlIO_close(f); | |
14a5cf38 JH |
1675 | f = NULL; |
1676 | } | |
1677 | } | |
1678 | } | |
1679 | } | |
3a1ee7e8 | 1680 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1681 | } |
1682 | return f; | |
ee518936 | 1683 | } |
b931b1d9 NIS |
1684 | |
1685 | ||
9e353e3b | 1686 | SSize_t |
e87a358a | 1687 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1688 | { |
7918f24d NC |
1689 | PERL_ARGS_ASSERT_PERLIO_READ; |
1690 | ||
b32dd47e | 1691 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1692 | } |
1693 | ||
313ca112 | 1694 | SSize_t |
e87a358a | 1695 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1696 | { |
7918f24d NC |
1697 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1698 | ||
b32dd47e | 1699 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1700 | } |
1701 | ||
9e353e3b | 1702 | SSize_t |
e87a358a | 1703 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1704 | { |
7918f24d NC |
1705 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1706 | ||
b32dd47e | 1707 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1708 | } |
1709 | ||
6f9d8c32 | 1710 | int |
e87a358a | 1711 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1712 | { |
b32dd47e | 1713 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1714 | } |
1715 | ||
9e353e3b | 1716 | Off_t |
e87a358a | 1717 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1718 | { |
b32dd47e | 1719 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1720 | } |
1721 | ||
6f9d8c32 | 1722 | int |
e87a358a | 1723 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1724 | { |
97aff369 | 1725 | dVAR; |
14a5cf38 JH |
1726 | if (f) { |
1727 | if (*f) { | |
de009b76 | 1728 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1729 | |
1730 | if (tab && tab->Flush) | |
f62ce20a | 1731 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1732 | else |
1733 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1734 | } |
1735 | else { | |
fe5a182c | 1736 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1737 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1738 | return -1; |
1739 | } | |
1740 | } | |
1741 | else { | |
1742 | /* | |
1743 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1744 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1745 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1746 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1747 | * decisions? --jhi |
14a5cf38 | 1748 | */ |
303f2dc3 DM |
1749 | PerlIOl **table = &PL_perlio; |
1750 | PerlIOl *ff; | |
14a5cf38 | 1751 | int code = 0; |
303f2dc3 | 1752 | while ((ff = *table)) { |
14a5cf38 | 1753 | int i; |
303f2dc3 | 1754 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1755 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1756 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1757 | code = -1; |
303f2dc3 | 1758 | ff++; |
14a5cf38 JH |
1759 | } |
1760 | } | |
1761 | return code; | |
1762 | } | |
760ac839 LW |
1763 | } |
1764 | ||
a9c883f6 | 1765 | void |
f62ce20a | 1766 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1767 | { |
97aff369 | 1768 | dVAR; |
303f2dc3 DM |
1769 | PerlIOl **table = &PL_perlio; |
1770 | PerlIOl *f; | |
14a5cf38 JH |
1771 | while ((f = *table)) { |
1772 | int i; | |
303f2dc3 | 1773 | table = (PerlIOl **) (f++); |
14a5cf38 | 1774 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1775 | if (f->next |
1776 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1777 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1778 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1779 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1780 | f++; |
1781 | } | |
a9c883f6 | 1782 | } |
a9c883f6 NIS |
1783 | } |
1784 | ||
06da4f11 | 1785 | int |
e87a358a | 1786 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1787 | { |
b32dd47e | 1788 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1789 | } |
1790 | ||
f3862f8b NIS |
1791 | int |
1792 | PerlIO_isutf8(PerlIO *f) | |
1793 | { | |
1b7a0411 JH |
1794 | if (PerlIOValid(f)) |
1795 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1796 | else | |
1797 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1798 | |
1b7a0411 | 1799 | return -1; |
f3862f8b NIS |
1800 | } |
1801 | ||
6f9d8c32 | 1802 | int |
e87a358a | 1803 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1804 | { |
b32dd47e | 1805 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1806 | } |
1807 | ||
9e353e3b | 1808 | int |
e87a358a | 1809 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1810 | { |
b32dd47e | 1811 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1812 | } |
1813 | ||
9e353e3b | 1814 | void |
e87a358a | 1815 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1816 | { |
b32dd47e | 1817 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1818 | } |
1819 | ||
9e353e3b | 1820 | void |
e87a358a | 1821 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1822 | { |
b32dd47e | 1823 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1824 | } |
1825 | ||
9e353e3b NIS |
1826 | int |
1827 | PerlIO_has_base(PerlIO *f) | |
1828 | { | |
1b7a0411 | 1829 | if (PerlIOValid(f)) { |
46c461b5 | 1830 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1831 | |
1832 | if (tab) | |
1833 | return (tab->Get_base != NULL); | |
1b7a0411 | 1834 | } |
1b7a0411 JH |
1835 | |
1836 | return 0; | |
760ac839 LW |
1837 | } |
1838 | ||
9e353e3b NIS |
1839 | int |
1840 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1841 | { |
d7dfc388 SK |
1842 | if (PerlIOValid(f)) { |
1843 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1844 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1845 | |
d7dfc388 SK |
1846 | if (tab) |
1847 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1848 | } |
14a5cf38 | 1849 | } |
1b7a0411 | 1850 | |
14a5cf38 | 1851 | return 0; |
9e353e3b NIS |
1852 | } |
1853 | ||
9e353e3b NIS |
1854 | int |
1855 | PerlIO_has_cntptr(PerlIO *f) | |
1856 | { | |
04892f78 | 1857 | if (PerlIOValid(f)) { |
46c461b5 | 1858 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1859 | |
1860 | if (tab) | |
1861 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1862 | } |
1b7a0411 | 1863 | |
14a5cf38 | 1864 | return 0; |
9e353e3b NIS |
1865 | } |
1866 | ||
9e353e3b NIS |
1867 | int |
1868 | PerlIO_canset_cnt(PerlIO *f) | |
1869 | { | |
04892f78 | 1870 | if (PerlIOValid(f)) { |
46c461b5 | 1871 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1872 | |
1873 | if (tab) | |
1874 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1875 | } |
1b7a0411 | 1876 | |
14a5cf38 | 1877 | return 0; |
760ac839 LW |
1878 | } |
1879 | ||
888911fc | 1880 | STDCHAR * |
e87a358a | 1881 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1882 | { |
b32dd47e | 1883 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1884 | } |
1885 | ||
9e353e3b | 1886 | int |
e87a358a | 1887 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1888 | { |
b32dd47e | 1889 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1890 | } |
1891 | ||
9e353e3b | 1892 | STDCHAR * |
e87a358a | 1893 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1894 | { |
b32dd47e | 1895 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1896 | } |
1897 | ||
05d1247b | 1898 | int |
e87a358a | 1899 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1900 | { |
b32dd47e | 1901 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1902 | } |
1903 | ||
9e353e3b | 1904 | void |
e87a358a | 1905 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1906 | { |
b32dd47e | 1907 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1908 | } |
1909 | ||
9e353e3b | 1910 | void |
e87a358a | 1911 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1912 | { |
b32dd47e | 1913 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1914 | } |
1915 | ||
4ec2216f | 1916 | |
9e353e3b | 1917 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1918 | /* |
71200d45 | 1919 | * utf8 and raw dummy layers |
14a5cf38 | 1920 | */ |
dfebf958 | 1921 | |
26fb694e | 1922 | IV |
2dc2558e | 1923 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1924 | { |
96a5add6 | 1925 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1926 | PERL_UNUSED_ARG(mode); |
1927 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1928 | if (PerlIOValid(f)) { |
cc6623a8 | 1929 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1930 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1931 | else | |
1932 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1933 | return 0; | |
1934 | } | |
1935 | return -1; | |
26fb694e NIS |
1936 | } |
1937 | ||
27da23d5 | 1938 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1939 | sizeof(PerlIO_funcs), |
14a5cf38 | 1940 | "utf8", |
2dc2558e | 1941 | 0, |
a778d1f5 | 1942 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1943 | PerlIOUtf8_pushed, |
1944 | NULL, | |
c0888ace | 1945 | PerlIOBase_open, |
14a5cf38 JH |
1946 | NULL, |
1947 | NULL, | |
1948 | NULL, | |
1949 | NULL, | |
1950 | NULL, | |
1951 | NULL, | |
1952 | NULL, | |
1953 | NULL, | |
de009b76 AL |
1954 | NULL, |
1955 | NULL, | |
22569500 NIS |
1956 | NULL, /* flush */ |
1957 | NULL, /* fill */ | |
14a5cf38 JH |
1958 | NULL, |
1959 | NULL, | |
1960 | NULL, | |
1961 | NULL, | |
22569500 NIS |
1962 | NULL, /* get_base */ |
1963 | NULL, /* get_bufsiz */ | |
1964 | NULL, /* get_ptr */ | |
1965 | NULL, /* get_cnt */ | |
1966 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1967 | }; |
1968 | ||
27da23d5 | 1969 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1970 | sizeof(PerlIO_funcs), |
14a5cf38 | 1971 | "bytes", |
2dc2558e | 1972 | 0, |
a778d1f5 | 1973 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1974 | PerlIOUtf8_pushed, |
1975 | NULL, | |
c0888ace | 1976 | PerlIOBase_open, |
14a5cf38 JH |
1977 | NULL, |
1978 | NULL, | |
1979 | NULL, | |
1980 | NULL, | |
1981 | NULL, | |
1982 | NULL, | |
1983 | NULL, | |
1984 | NULL, | |
de009b76 AL |
1985 | NULL, |
1986 | NULL, | |
22569500 NIS |
1987 | NULL, /* flush */ |
1988 | NULL, /* fill */ | |
14a5cf38 JH |
1989 | NULL, |
1990 | NULL, | |
1991 | NULL, | |
1992 | NULL, | |
22569500 NIS |
1993 | NULL, /* get_base */ |
1994 | NULL, /* get_bufsiz */ | |
1995 | NULL, /* get_ptr */ | |
1996 | NULL, /* get_cnt */ | |
1997 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1998 | }; |
1999 | ||
27da23d5 | 2000 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 2001 | sizeof(PerlIO_funcs), |
14a5cf38 | 2002 | "raw", |
2dc2558e | 2003 | 0, |
14a5cf38 JH |
2004 | PERLIO_K_DUMMY, |
2005 | PerlIORaw_pushed, | |
2006 | PerlIOBase_popped, | |
ecfd0649 | 2007 | PerlIOBase_open, |
14a5cf38 JH |
2008 | NULL, |
2009 | NULL, | |
2010 | NULL, | |
2011 | NULL, | |
2012 | NULL, | |
2013 | NULL, | |
2014 | NULL, | |
2015 | NULL, | |
de009b76 AL |
2016 | NULL, |
2017 | NULL, | |
22569500 NIS |
2018 | NULL, /* flush */ |
2019 | NULL, /* fill */ | |
14a5cf38 JH |
2020 | NULL, |
2021 | NULL, | |
2022 | NULL, | |
2023 | NULL, | |
22569500 NIS |
2024 | NULL, /* get_base */ |
2025 | NULL, /* get_bufsiz */ | |
2026 | NULL, /* get_ptr */ | |
2027 | NULL, /* get_cnt */ | |
2028 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
2029 | }; |
2030 | /*--------------------------------------------------------------------------------------*/ | |
2031 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2032 | /* |
71200d45 | 2033 | * "Methods" of the "base class" |
14a5cf38 | 2034 | */ |
9e353e3b NIS |
2035 | |
2036 | IV | |
f62ce20a | 2037 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2038 | { |
04892f78 | 2039 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
2040 | } |
2041 | ||
f5b9d040 | 2042 | char * |
81428673 | 2043 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
2044 | { |
2045 | char *s = buf; | |
81428673 | 2046 | if (PerlIOValid(f)) { |
de009b76 | 2047 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2048 | if (flags & PERLIO_F_APPEND) { |
2049 | *s++ = 'a'; | |
2050 | if (flags & PERLIO_F_CANREAD) { | |
2051 | *s++ = '+'; | |
2052 | } | |
14a5cf38 | 2053 | } |
81428673 NIS |
2054 | else if (flags & PERLIO_F_CANREAD) { |
2055 | *s++ = 'r'; | |
2056 | if (flags & PERLIO_F_CANWRITE) | |
2057 | *s++ = '+'; | |
2058 | } | |
2059 | else if (flags & PERLIO_F_CANWRITE) { | |
2060 | *s++ = 'w'; | |
2061 | if (flags & PERLIO_F_CANREAD) { | |
2062 | *s++ = '+'; | |
2063 | } | |
14a5cf38 | 2064 | } |
35990314 | 2065 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2066 | if (!(flags & PERLIO_F_CRLF)) |
2067 | *s++ = 'b'; | |
5f1a76d0 | 2068 | #endif |
81428673 | 2069 | } |
14a5cf38 JH |
2070 | *s = '\0'; |
2071 | return buf; | |
f5b9d040 NIS |
2072 | } |
2073 | ||
81428673 | 2074 | |
76ced9ad | 2075 | IV |
2dc2558e | 2076 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2077 | { |
de009b76 | 2078 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2079 | PERL_UNUSED_CONTEXT; |
8772537c | 2080 | PERL_UNUSED_ARG(arg); |
de009b76 | 2081 | |
14a5cf38 JH |
2082 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2083 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 2084 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
2085 | l->flags |= PERLIO_F_FASTGETS; |
2086 | if (mode) { | |
3b6c1aba | 2087 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2088 | mode++; |
2089 | switch (*mode++) { | |
2090 | case 'r': | |
2091 | l->flags |= PERLIO_F_CANREAD; | |
2092 | break; | |
2093 | case 'a': | |
2094 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2095 | break; | |
2096 | case 'w': | |
2097 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2098 | break; | |
2099 | default: | |
93189314 | 2100 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2101 | return -1; |
2102 | } | |
2103 | while (*mode) { | |
2104 | switch (*mode++) { | |
2105 | case '+': | |
2106 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2107 | break; | |
2108 | case 'b': | |
2109 | l->flags &= ~PERLIO_F_CRLF; | |
2110 | break; | |
2111 | case 't': | |
2112 | l->flags |= PERLIO_F_CRLF; | |
2113 | break; | |
2114 | default: | |
93189314 | 2115 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2116 | return -1; |
2117 | } | |
2118 | } | |
2119 | } | |
2120 | else { | |
2121 | if (l->next) { | |
2122 | l->flags |= l->next->flags & | |
2123 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2124 | PERLIO_F_APPEND); | |
2125 | } | |
2126 | } | |
5e2ab84b | 2127 | #if 0 |
14a5cf38 | 2128 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2129 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2130 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2131 | #endif |
14a5cf38 | 2132 | return 0; |
76ced9ad NIS |
2133 | } |
2134 | ||
2135 | IV | |
f62ce20a | 2136 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2137 | { |
96a5add6 | 2138 | PERL_UNUSED_CONTEXT; |
8772537c | 2139 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2140 | return 0; |
760ac839 LW |
2141 | } |
2142 | ||
9e353e3b | 2143 | SSize_t |
f62ce20a | 2144 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2145 | { |
14a5cf38 | 2146 | /* |
71200d45 | 2147 | * Save the position as current head considers it |
14a5cf38 | 2148 | */ |
de009b76 | 2149 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2150 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2151 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2152 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2153 | } |
2154 | ||
f6c77cf1 | 2155 | SSize_t |
f62ce20a | 2156 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2157 | { |
14a5cf38 JH |
2158 | STDCHAR *buf = (STDCHAR *) vbuf; |
2159 | if (f) { | |
263df5f1 JH |
2160 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2161 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2162 | SETERRNO(EBADF, SS_IVCHAN); | |
2163 | return 0; | |
2164 | } | |
14a5cf38 | 2165 | while (count > 0) { |
93c2c2ec IZ |
2166 | get_cnt: |
2167 | { | |
14a5cf38 JH |
2168 | SSize_t avail = PerlIO_get_cnt(f); |
2169 | SSize_t take = 0; | |
2170 | if (avail > 0) | |
bb7a0f54 | 2171 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2172 | if (take > 0) { |
2173 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2174 | Copy(ptr, buf, take, STDCHAR); | |
2175 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2176 | count -= take; | |
2177 | buf += take; | |
93c2c2ec IZ |
2178 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2179 | goto get_cnt; | |
14a5cf38 JH |
2180 | } |
2181 | if (count > 0 && avail <= 0) { | |
2182 | if (PerlIO_fill(f) != 0) | |
2183 | break; | |
2184 | } | |
93c2c2ec | 2185 | } |
14a5cf38 JH |
2186 | } |
2187 | return (buf - (STDCHAR *) vbuf); | |
2188 | } | |
f6c77cf1 | 2189 | return 0; |
f6c77cf1 NIS |
2190 | } |
2191 | ||
9e353e3b | 2192 | IV |
f62ce20a | 2193 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2194 | { |
96a5add6 | 2195 | PERL_UNUSED_CONTEXT; |
8772537c | 2196 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2197 | return 0; |
9e353e3b NIS |
2198 | } |
2199 | ||
2200 | IV | |
f62ce20a | 2201 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2202 | { |
96a5add6 | 2203 | PERL_UNUSED_CONTEXT; |
8772537c | 2204 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2205 | return -1; |
06da4f11 NIS |
2206 | } |
2207 | ||
2208 | IV | |
f62ce20a | 2209 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2210 | { |
37725cdc NIS |
2211 | IV code = -1; |
2212 | if (PerlIOValid(f)) { | |
2213 | PerlIO *n = PerlIONext(f); | |
2214 | code = PerlIO_flush(f); | |
2215 | PerlIOBase(f)->flags &= | |
2216 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2217 | while (PerlIOValid(n)) { | |
de009b76 | 2218 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2219 | if (tab && tab->Close) { |
2220 | if ((*tab->Close)(aTHX_ n) != 0) | |
2221 | code = -1; | |
2222 | break; | |
2223 | } | |
2224 | else { | |
2225 | PerlIOBase(n)->flags &= | |
2226 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2227 | } | |
2228 | n = PerlIONext(n); | |
2229 | } | |
2230 | } | |
2231 | else { | |
2232 | SETERRNO(EBADF, SS_IVCHAN); | |
2233 | } | |
14a5cf38 | 2234 | return code; |
9e353e3b NIS |
2235 | } |
2236 | ||
2237 | IV | |
f62ce20a | 2238 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2239 | { |
96a5add6 | 2240 | PERL_UNUSED_CONTEXT; |
04892f78 | 2241 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2242 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2243 | } | |
2244 | return 1; | |
9e353e3b NIS |
2245 | } |
2246 | ||
2247 | IV | |
f62ce20a | 2248 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2249 | { |
96a5add6 | 2250 | PERL_UNUSED_CONTEXT; |
04892f78 | 2251 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2252 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2253 | } | |
2254 | return 1; | |
9e353e3b NIS |
2255 | } |
2256 | ||
2257 | void | |
f62ce20a | 2258 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2259 | { |
04892f78 | 2260 | if (PerlIOValid(f)) { |
dcda55fc | 2261 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2262 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2263 | if (PerlIOValid(n)) |
14a5cf38 JH |
2264 | PerlIO_clearerr(n); |
2265 | } | |
9e353e3b NIS |
2266 | } |
2267 | ||
2268 | void | |
f62ce20a | 2269 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2270 | { |
96a5add6 | 2271 | PERL_UNUSED_CONTEXT; |
04892f78 | 2272 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2273 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2274 | } | |
9e353e3b NIS |
2275 | } |
2276 | ||
93a8090d NIS |
2277 | SV * |
2278 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2279 | { | |
2280 | if (!arg) | |
a0714e2c | 2281 | return NULL; |
93a8090d NIS |
2282 | #ifdef sv_dup |
2283 | if (param) { | |
a951d81d BL |
2284 | arg = sv_dup(arg, param); |
2285 | SvREFCNT_inc_simple_void_NN(arg); | |
2286 | return arg; | |
93a8090d NIS |
2287 | } |
2288 | else { | |
2289 | return newSVsv(arg); | |
2290 | } | |
2291 | #else | |
1b6737cc | 2292 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2293 | return newSVsv(arg); |
2294 | #endif | |
2295 | } | |
2296 | ||
2297 | PerlIO * | |
ecdeb87c | 2298 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2299 | { |
1b6737cc | 2300 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2301 | if (PerlIOValid(nexto)) { |
de009b76 | 2302 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2303 | if (tab && tab->Dup) |
2304 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2305 | else | |
2306 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2307 | } |
2308 | if (f) { | |
dcda55fc | 2309 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2310 | SV *arg = NULL; |
93a8090d | 2311 | char buf[8]; |
fe5a182c | 2312 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2313 | self ? self->name : "(Null)", |
2314 | (void*)f, (void*)o, (void*)param); | |
2315 | if (self && self->Getarg) | |
210e727c | 2316 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2317 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2318 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2319 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
ef8d46e8 | 2320 | SvREFCNT_dec(arg); |
93a8090d NIS |
2321 | } |
2322 | return f; | |
2323 | } | |
2324 | ||
27da23d5 | 2325 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2326 | |
8b84d7dd | 2327 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2328 | static void |
2329 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2330 | dVAR; |
22c96fc1 | 2331 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2332 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2333 | int *new_array; |
2334 | ||
2335 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2336 | old_max, new_fd, new_max); | |
2337 | ||
2338 | if (new_fd < old_max) { | |
2339 | return; | |
2340 | } | |
2341 | ||
f4ae5be6 NC |
2342 | assert (new_max > new_fd); |
2343 | ||
eae082a0 JH |
2344 | /* Use plain realloc() since we need this memory to be really |
2345 | * global and visible to all the interpreters and/or threads. */ | |
2346 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2347 | |
2348 | if (!new_array) { | |
8b84d7dd | 2349 | #ifdef USE_ITHREADS |
6cb8cb21 | 2350 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2351 | #endif |
2352 | /* Can't use PerlIO to write as it allocates memory */ | |
2353 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2354 | PL_no_mem, strlen(PL_no_mem)); | |
2355 | my_exit(1); | |
2356 | } | |
2357 | ||
2358 | PL_perlio_fd_refcnt_size = new_max; | |
2359 | PL_perlio_fd_refcnt = new_array; | |
2360 | ||
95b63a38 JH |
2361 | PerlIO_debug("Zeroing %p, %d\n", |
2362 | (void*)(new_array + old_max), | |
2363 | new_max - old_max); | |
22c96fc1 NC |
2364 | |
2365 | Zero(new_array + old_max, new_max - old_max, int); | |
2366 | } | |
2367 | ||
2368 | ||
93a8090d NIS |
2369 | void |
2370 | PerlIO_init(pTHX) | |
2371 | { | |
8b84d7dd | 2372 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2373 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2374 | } |
2375 | ||
168d5872 NIS |
2376 | void |
2377 | PerlIOUnix_refcnt_inc(int fd) | |
2378 | { | |
27da23d5 | 2379 | dTHX; |
22c96fc1 | 2380 | if (fd >= 0) { |
97aff369 | 2381 | dVAR; |
22c96fc1 | 2382 | |
8b84d7dd | 2383 | #ifdef USE_ITHREADS |
6cb8cb21 | 2384 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2385 | #endif |
22c96fc1 NC |
2386 | if (fd >= PL_perlio_fd_refcnt_size) |
2387 | S_more_refcounted_fds(aTHX_ fd); | |
2388 | ||
27da23d5 | 2389 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2390 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2391 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2392 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2393 | fd, PL_perlio_fd_refcnt[fd]); | |
2394 | } | |
2395 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2396 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2397 | |
8b84d7dd | 2398 | #ifdef USE_ITHREADS |
6cb8cb21 | 2399 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2400 | #endif |
8b84d7dd | 2401 | } else { |
12605ff9 | 2402 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2403 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2404 | } |
2405 | } | |
2406 | ||
168d5872 NIS |
2407 | int |
2408 | PerlIOUnix_refcnt_dec(int fd) | |
2409 | { | |
27da23d5 | 2410 | dTHX; |
168d5872 | 2411 | int cnt = 0; |
22c96fc1 | 2412 | if (fd >= 0) { |
97aff369 | 2413 | dVAR; |
8b84d7dd | 2414 | #ifdef USE_ITHREADS |
6cb8cb21 | 2415 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2416 | #endif |
8b84d7dd | 2417 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2418 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
8b84d7dd RGS |
2419 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", |
2420 | fd, PL_perlio_fd_refcnt_size); | |
2421 | } | |
2422 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2423 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
8b84d7dd RGS |
2424 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", |
2425 | fd, PL_perlio_fd_refcnt[fd]); | |
2426 | } | |
27da23d5 | 2427 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2428 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2429 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2430 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2431 | #endif |
8b84d7dd | 2432 | } else { |
12605ff9 | 2433 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
8b84d7dd | 2434 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2435 | } |
2436 | return cnt; | |
2437 | } | |
2438 | ||
2e0cfa16 FC |
2439 | int |
2440 | PerlIOUnix_refcnt(int fd) | |
2441 | { | |
2442 | dTHX; | |
2443 | int cnt = 0; | |
2444 | if (fd >= 0) { | |
2445 | dVAR; | |
2446 | #ifdef USE_ITHREADS | |
2447 | MUTEX_LOCK(&PL_perlio_mutex); | |
2448 | #endif | |
2449 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2450 | /* diag_listed_as: refcnt: fd %d%s */ | |
2451 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2452 | fd, PL_perlio_fd_refcnt_size); | |
2453 | } | |
2454 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2455 | /* diag_listed_as: refcnt: fd %d%s */ | |
2456 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2457 | fd, PL_perlio_fd_refcnt[fd]); | |
2458 | } | |
2459 | cnt = PL_perlio_fd_refcnt[fd]; | |
2460 | #ifdef USE_ITHREADS | |
2461 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2462 | #endif | |
2463 | } else { | |
2464 | /* diag_listed_as: refcnt: fd %d%s */ | |
2465 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2466 | } | |
2467 | return cnt; | |
2468 | } | |
2469 | ||
694c95cf JH |
2470 | void |
2471 | PerlIO_cleanup(pTHX) | |
2472 | { | |
97aff369 | 2473 | dVAR; |
694c95cf JH |
2474 | int i; |
2475 | #ifdef USE_ITHREADS | |
a25429c6 | 2476 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2477 | #else |
2478 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2479 | #endif |
e47547a8 | 2480 | |
694c95cf JH |
2481 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2482 | for (i=0; i < 3; i++) | |
2483 | PerlIOUnix_refcnt_inc(i); | |
2484 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2485 | /* Restore STDIN..STDERR refcount */ | |
2486 | for (i=0; i < 3; i++) | |
2487 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2488 | |
2489 | if (PL_known_layers) { | |
2490 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2491 | PL_known_layers = NULL; | |
2492 | } | |
27da23d5 | 2493 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2494 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2495 | PL_def_layerlist = NULL; | |
2496 | } | |
6cb8cb21 RGS |
2497 | } |
2498 | ||
0934c9d9 | 2499 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2500 | { |
53d44271 | 2501 | dVAR; |
4f3da17a DM |
2502 | #if 0 |
2503 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2504 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2505 | being present (at least in win32) :-(. | |
2506 | Disable for now. | |
2507 | */ | |
6cb8cb21 RGS |
2508 | #ifdef DEBUGGING |
2509 | { | |
2510 | /* By now all filehandles should have been closed, so any | |
2511 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2512 | * errors. */ | |
77db880c JH |
2513 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2514 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2515 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2516 | int i; |
2517 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2518 | if (PL_perlio_fd_refcnt[i]) { |
2519 | const STRLEN len = | |
2520 | my_snprintf(buf, sizeof(buf), | |
2521 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2522 | i, PL_perlio_fd_refcnt[i]); | |
2523 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2524 | } | |
6cb8cb21 RGS |
2525 | } |
2526 | } | |
2527 | #endif | |
4f3da17a | 2528 | #endif |
eae082a0 JH |
2529 | /* Not bothering with PL_perlio_mutex since by now |
2530 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2531 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2532 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2533 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2534 | PL_perlio_fd_refcnt = NULL; |
2535 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2536 | } |
694c95cf JH |
2537 | } |
2538 | ||
9e353e3b | 2539 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2540 | /* |
71200d45 | 2541 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2542 | */ |
9e353e3b | 2543 | |
14a5cf38 | 2544 | typedef struct { |
22569500 NIS |
2545 | struct _PerlIO base; /* The generic part */ |
2546 | int fd; /* UNIX like file descriptor */ | |
2547 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2548 | } PerlIOUnix; |
2549 | ||
abf9167d DM |
2550 | static void |
2551 | S_lockcnt_dec(pTHX_ const void* f) | |
2552 | { | |
2553 | PerlIO_lockcnt((PerlIO*)f)--; | |
2554 | } | |
2555 | ||
2556 | ||
2557 | /* call the signal handler, and if that handler happens to clear | |
2558 | * this handle, free what we can and return true */ | |
2559 | ||
2560 | static bool | |
2561 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2562 | ENTER; | |
2563 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2564 | PerlIO_lockcnt(f)++; | |
2565 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2566 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2567 | LEAVE; | |
abf9167d | 2568 | return 0; |
be48bbe8 | 2569 | } |
abf9167d DM |
2570 | /* we've just run some perl-level code that could have done |
2571 | * anything, including closing the file or clearing this layer. | |
2572 | * If so, free any lower layers that have already been | |
2573 | * cleared, then return an error. */ | |
2574 | while (PerlIOValid(f) && | |
2575 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2576 | { | |
2577 | const PerlIOl *l = *f; | |
2578 | *f = l->next; | |
2579 | Safefree(l); | |
2580 | } | |
be48bbe8 | 2581 | LEAVE; |
abf9167d DM |
2582 | return 1; |
2583 | } | |
2584 | ||
6f9d8c32 | 2585 | int |
9e353e3b | 2586 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2587 | { |
14a5cf38 | 2588 | int oflags = -1; |
3b6c1aba | 2589 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2590 | mode++; |
2591 | switch (*mode) { | |
2592 | case 'r': | |
2593 | oflags = O_RDONLY; | |
2594 | if (*++mode == '+') { | |
2595 | oflags = O_RDWR; | |
2596 | mode++; | |
2597 | } | |
2598 | break; | |
2599 | ||
2600 | case 'w': | |
2601 | oflags = O_CREAT | O_TRUNC; | |
2602 | if (*++mode == '+') { | |
2603 | oflags |= O_RDWR; | |
2604 | mode++; | |
2605 | } | |
2606 | else | |
2607 | oflags |= O_WRONLY; | |
2608 | break; | |
2609 | ||
2610 | case 'a': | |
2611 | oflags = O_CREAT | O_APPEND; | |
2612 | if (*++mode == '+') { | |
2613 | oflags |= O_RDWR; | |
2614 | mode++; | |
2615 | } | |
2616 | else | |
2617 | oflags |= O_WRONLY; | |
2618 | break; | |
2619 | } | |
2620 | if (*mode == 'b') { | |
2621 | oflags |= O_BINARY; | |
2622 | oflags &= ~O_TEXT; | |
2623 | mode++; | |
2624 | } | |
2625 | else if (*mode == 't') { | |
2626 | oflags |= O_TEXT; | |
2627 | oflags &= ~O_BINARY; | |
2628 | mode++; | |
2629 | } | |
2630 | /* | |
71200d45 | 2631 | * Always open in binary mode |
14a5cf38 JH |
2632 | */ |
2633 | oflags |= O_BINARY; | |
2634 | if (*mode || oflags == -1) { | |
93189314 | 2635 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2636 | oflags = -1; |
2637 | } | |
2638 | return oflags; | |
9e353e3b NIS |
2639 | } |
2640 | ||
2641 | IV | |
f62ce20a | 2642 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2643 | { |
96a5add6 | 2644 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2645 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2646 | } |
2647 | ||
aa063c35 NIS |
2648 | static void |
2649 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2650 | { |
de009b76 | 2651 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2652 | #if defined(WIN32) |
aa063c35 NIS |
2653 | Stat_t st; |
2654 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2655 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2656 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2657 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2658 | } | |
aa063c35 NIS |
2659 | else { |
2660 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2661 | } | |
6caa5a9c NIS |
2662 | } |
2663 | #endif | |
aa063c35 NIS |
2664 | s->fd = fd; |
2665 | s->oflags = imode; | |
2666 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2667 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2668 | } |
2669 | ||
2670 | IV | |
2671 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2672 | { | |
2673 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2674 | if (*PerlIONext(f)) { |
4b069b44 | 2675 | /* We never call down so do any pending stuff now */ |
03c0554d | 2676 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2677 | /* |
71200d45 | 2678 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2679 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2680 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2681 | */ |
acbd16bf | 2682 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2683 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2684 | } |
2685 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2686 | |
14a5cf38 | 2687 | return code; |
4b803d04 NIS |
2688 | } |
2689 | ||
c2fcde81 JH |
2690 | IV |
2691 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2692 | { | |
de009b76 | 2693 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2694 | Off_t new_loc; |
96a5add6 | 2695 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2696 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2697 | #ifdef ESPIPE | |
2698 | SETERRNO(ESPIPE, LIB_INVARG); | |
2699 | #else | |
2700 | SETERRNO(EINVAL, LIB_INVARG); | |
2701 | #endif | |
2702 | return -1; | |
2703 | } | |
0723351e NC |
2704 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2705 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2706 | return -1; |
c2fcde81 JH |
2707 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2708 | return 0; | |
2709 | } | |
2710 | ||
9e353e3b | 2711 | PerlIO * |
14a5cf38 JH |
2712 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2713 | IV n, const char *mode, int fd, int imode, | |
2714 | int perm, PerlIO *f, int narg, SV **args) | |
2715 | { | |
d9dac8cd | 2716 | if (PerlIOValid(f)) { |
cc6623a8 | 2717 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2718 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2719 | } |
2720 | if (narg > 0) { | |
3b6c1aba | 2721 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2722 | mode++; |
2723 | else { | |
2724 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2725 | #ifdef VMS |
2726 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2727 | #else | |
14a5cf38 | 2728 | perm = 0666; |
5e2ce0f3 | 2729 | #endif |
14a5cf38 JH |
2730 | } |
2731 | if (imode != -1) { | |
e62f0680 | 2732 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2733 | fd = PerlLIO_open3(path, imode, perm); |
2734 | } | |
2735 | } | |
2736 | if (fd >= 0) { | |
3b6c1aba | 2737 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2738 | mode++; |
2739 | if (!f) { | |
2740 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2741 | } |
2742 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2743 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2744 | return NULL; | |
2745 | } | |
d9dac8cd | 2746 | } |
aa063c35 | 2747 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2748 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2749 | if (*mode == IoTYPE_APPEND) |
2750 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2751 | return f; |
2752 | } | |
2753 | else { | |
2754 | if (f) { | |
6f207bd3 | 2755 | NOOP; |
14a5cf38 | 2756 | /* |
71200d45 | 2757 | * FIXME: pop layers ??? |
14a5cf38 JH |
2758 | */ |
2759 | } | |
2760 | return NULL; | |
2761 | } | |
9e353e3b NIS |
2762 | } |
2763 | ||
71200d45 | 2764 | PerlIO * |
ecdeb87c | 2765 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2766 | { |
dcda55fc | 2767 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2768 | int fd = os->fd; |
ecdeb87c NIS |
2769 | if (flags & PERLIO_DUP_FD) { |
2770 | fd = PerlLIO_dup(fd); | |
2771 | } | |
22c96fc1 | 2772 | if (fd >= 0) { |
ecdeb87c | 2773 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2774 | if (f) { |
2775 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2776 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2777 | return f; |
2778 | } | |
71200d45 NIS |
2779 | } |
2780 | return NULL; | |
2781 | } | |
2782 | ||
2783 | ||
9e353e3b | 2784 | SSize_t |
f62ce20a | 2785 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2786 | { |
97aff369 | 2787 | dVAR; |
abf9167d DM |
2788 | int fd; |
2789 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2790 | return -1; | |
2791 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2792 | #ifdef PERLIO_STD_SPECIAL |
2793 | if (fd == 0) | |
2794 | return PERLIO_STD_IN(fd, vbuf, count); | |
2795 | #endif | |
81428673 | 2796 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2797 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2798 | return 0; |
1fd8f4ce | 2799 | } |
14a5cf38 | 2800 | while (1) { |
b464bac0 | 2801 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2802 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2803 | if (len < 0) { |
2804 | if (errno != EAGAIN) { | |
2805 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2806 | } | |
2807 | } | |
2808 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2809 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2810 | SETERRNO(0,0); |
2811 | } | |
14a5cf38 JH |
2812 | return len; |
2813 | } | |
abf9167d DM |
2814 | /* EINTR */ |
2815 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2816 | return -1; | |
14a5cf38 | 2817 | } |
b464bac0 | 2818 | /*NOTREACHED*/ |
9e353e3b NIS |
2819 | } |
2820 | ||
2821 | SSize_t | |
f62ce20a | 2822 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2823 | { |
97aff369 | 2824 | dVAR; |
abf9167d DM |
2825 | int fd; |
2826 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2827 | return -1; | |
2828 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2829 | #ifdef PERLIO_STD_SPECIAL |
2830 | if (fd == 1 || fd == 2) | |
2831 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2832 | #endif | |
14a5cf38 | 2833 | while (1) { |
de009b76 | 2834 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2835 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2836 | if (len < 0) { |
2837 | if (errno != EAGAIN) { | |
2838 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2839 | } | |
2840 | } | |
14a5cf38 JH |
2841 | return len; |
2842 | } | |
abf9167d DM |
2843 | /* EINTR */ |
2844 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2845 | return -1; | |
06da4f11 | 2846 | } |
1b6737cc | 2847 | /*NOTREACHED*/ |
9e353e3b NIS |
2848 | } |
2849 | ||
9e353e3b | 2850 | Off_t |
f62ce20a | 2851 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2852 | { |
96a5add6 AL |
2853 | PERL_UNUSED_CONTEXT; |
2854 | ||
14a5cf38 | 2855 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2856 | } |
2857 | ||
2556f95e GF |
2858 | |
2859 | IV | |
2376d97d | 2860 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2861 | { |
97aff369 | 2862 | dVAR; |
de009b76 | 2863 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2864 | int code = 0; |
168d5872 NIS |
2865 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2866 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2867 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2868 | return 0; | |
22569500 | 2869 | } |
93a8090d NIS |
2870 | } |
2871 | else { | |
93189314 | 2872 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2873 | return -1; |
2874 | } | |
14a5cf38 JH |
2875 | while (PerlLIO_close(fd) != 0) { |
2876 | if (errno != EINTR) { | |
2877 | code = -1; | |
2878 | break; | |
2879 | } | |
abf9167d DM |
2880 | /* EINTR */ |
2881 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2882 | return -1; | |
14a5cf38 JH |
2883 | } |
2884 | if (code == 0) { | |
2885 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2886 | } | |
2887 | return code; | |
9e353e3b NIS |
2888 | } |
2889 | ||
27da23d5 | 2890 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2891 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2892 | "unix", |
2893 | sizeof(PerlIOUnix), | |
2894 | PERLIO_K_RAW, | |
2895 | PerlIOUnix_pushed, | |
2376d97d | 2896 | PerlIOBase_popped, |
14a5cf38 | 2897 | PerlIOUnix_open, |
86e05cf2 | 2898 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2899 | NULL, |
2900 | PerlIOUnix_fileno, | |
71200d45 | 2901 | PerlIOUnix_dup, |
14a5cf38 JH |
2902 | PerlIOUnix_read, |
2903 | PerlIOBase_unread, | |
2904 | PerlIOUnix_write, | |
2905 | PerlIOUnix_seek, | |
2906 | PerlIOUnix_tell, | |
2907 | PerlIOUnix_close, | |
22569500 NIS |
2908 | PerlIOBase_noop_ok, /* flush */ |
2909 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2910 | PerlIOBase_eof, |
2911 | PerlIOBase_error, | |
2912 | PerlIOBase_clearerr, | |
2913 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2914 | NULL, /* get_base */ |
2915 | NULL, /* get_bufsiz */ | |
2916 | NULL, /* get_ptr */ | |
2917 | NULL, /* get_cnt */ | |
2918 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2919 | }; |
2920 | ||
2921 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2922 | /* |
71200d45 | 2923 | * stdio as a layer |
14a5cf38 | 2924 | */ |
9e353e3b | 2925 | |
313e59c8 NIS |
2926 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2927 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2928 | broken by the last second glibc 2.3 fix | |
2929 | */ | |
2930 | #define STDIO_BUFFER_WRITABLE | |
2931 | #endif | |
2932 | ||
2933 | ||
14a5cf38 JH |
2934 | typedef struct { |
2935 | struct _PerlIO base; | |
22569500 | 2936 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2937 | } PerlIOStdio; |
2938 | ||
2939 | IV | |
f62ce20a | 2940 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2941 | { |
96a5add6 AL |
2942 | PERL_UNUSED_CONTEXT; |
2943 | ||
c4420975 AL |
2944 | if (PerlIOValid(f)) { |
2945 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2946 | if (s) | |
2947 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2948 | } |
2949 | errno = EBADF; | |
2950 | return -1; | |
9e353e3b NIS |
2951 | } |
2952 | ||
766a733e | 2953 | char * |
14a5cf38 JH |
2954 | PerlIOStdio_mode(const char *mode, char *tmode) |
2955 | { | |
de009b76 | 2956 | char * const ret = tmode; |
a0625d38 SR |
2957 | if (mode) { |
2958 | while (*mode) { | |
2959 | *tmode++ = *mode++; | |
2960 | } | |
14a5cf38 | 2961 | } |
95005ad8 | 2962 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2963 | *tmode++ = 'b'; |
2964 | #endif | |
14a5cf38 JH |
2965 | *tmode = '\0'; |
2966 | return ret; | |
2967 | } | |
2968 | ||
4b803d04 | 2969 | IV |
2dc2558e | 2970 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2971 | { |
1fd8f4ce NIS |
2972 | PerlIO *n; |
2973 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2974 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2975 | if (toptab == tab) { |
2976 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2977 | PerlIO_pop(aTHX_ f); | |
2978 | return 0; | |
2979 | } else { | |
de009b76 | 2980 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2981 | char tmode[8]; |
2982 | FILE *stdio; | |
81428673 | 2983 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2984 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2985 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2986 | /* We never call down so do any pending stuff now */ | |
2987 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2988 | } |
1fd8f4ce NIS |
2989 | else { |
2990 | return -1; | |
2991 | } | |
2992 | } | |
14a5cf38 | 2993 | } |
2dc2558e | 2994 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2995 | } |
2996 | ||
22569500 | 2997 | |
9e353e3b | 2998 | PerlIO * |
4b069b44 | 2999 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 3000 | { |
14a5cf38 JH |
3001 | dTHX; |
3002 | PerlIO *f = NULL; | |
3003 | if (stdio) { | |
22569500 | 3004 | PerlIOStdio *s; |
4b069b44 NIS |
3005 | if (!mode || !*mode) { |
3006 | /* We need to probe to see how we can open the stream | |
3007 | so start with read/write and then try write and read | |
3008 | we dup() so that we can fclose without loosing the fd. | |
3009 | ||
3010 | Note that the errno value set by a failing fdopen | |
3011 | varies between stdio implementations. | |
3012 | */ | |
de009b76 | 3013 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 3014 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 3015 | if (!f2) { |
a33cf58c | 3016 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
3017 | } |
3018 | if (!f2) { | |
a33cf58c | 3019 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
3020 | } |
3021 | if (!f2) { | |
3022 | /* Don't seem to be able to open */ | |
3023 | PerlLIO_close(fd); | |
3024 | return f; | |
3025 | } | |
3026 | fclose(f2); | |
22569500 | 3027 | } |
a0714e2c | 3028 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
3029 | s = PerlIOSelf(f, PerlIOStdio); |
3030 | s->stdio = stdio; | |
c586124f | 3031 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 3032 | } |
14a5cf38 JH |
3033 | } |
3034 | return f; | |
9e353e3b NIS |
3035 | } |
3036 | ||
3037 | PerlIO * | |
14a5cf38 JH |
3038 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3039 | IV n, const char *mode, int fd, int imode, | |
3040 | int perm, PerlIO *f, int narg, SV **args) | |
3041 | { | |
3042 | char tmode[8]; | |
d9dac8cd | 3043 | if (PerlIOValid(f)) { |
dcda55fc AL |
3044 | const char * const path = SvPV_nolen_const(*args); |
3045 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
3046 | FILE *stdio; |
3047 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
3048 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
3049 | s->stdio); |
3050 | if (!s->stdio) | |
3051 | return NULL; | |
3052 | s->stdio = stdio; | |
1751d015 | 3053 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3054 | return f; |
3055 | } | |
3056 | else { | |
3057 | if (narg > 0) { | |
dcda55fc | 3058 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 3059 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3060 | mode++; |
3061 | fd = PerlLIO_open3(path, imode, perm); | |
3062 | } | |
3063 | else { | |
95005ad8 GH |
3064 | FILE *stdio; |
3065 | bool appended = FALSE; | |
3066 | #ifdef __CYGWIN__ | |
3067 | /* Cygwin wants its 'b' early. */ | |
3068 | appended = TRUE; | |
3069 | mode = PerlIOStdio_mode(mode, tmode); | |
3070 | #endif | |
3071 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3072 | if (stdio) { |
6f0313ac JH |
3073 | if (!f) { |
3074 | f = PerlIO_allocate(aTHX); | |
3075 | } | |
95005ad8 GH |
3076 | if (!appended) |
3077 | mode = PerlIOStdio_mode(mode, tmode); | |
3078 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3079 | if (f) { | |
0f0f9e2b JH |
3080 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3081 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3082 | } else { | |
3083 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3084 | } |
3085 | return f; | |
3086 | } | |
3087 | else { | |
3088 | return NULL; | |
3089 | } | |
14a5cf38 JH |
3090 | } |
3091 | } | |
3092 | if (fd >= 0) { | |
3093 | FILE *stdio = NULL; | |
3094 | int init = 0; | |
3b6c1aba | 3095 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3096 | init = 1; |
3097 | mode++; | |
3098 | } | |
3099 | if (init) { | |
3100 | switch (fd) { | |
3101 | case 0: | |
3102 | stdio = PerlSIO_stdin; | |
3103 | break; | |
3104 | case 1: | |
3105 | stdio = PerlSIO_stdout; | |
3106 | break; | |
3107 | case 2: | |
3108 | stdio = PerlSIO_stderr; | |
3109 | break; | |
3110 | } | |
3111 | } | |
3112 | else { | |
3113 | stdio = PerlSIO_fdopen(fd, mode = | |
3114 | PerlIOStdio_mode(mode, tmode)); | |
3115 | } | |
3116 | if (stdio) { | |
d9dac8cd NIS |
3117 | if (!f) { |
3118 | f = PerlIO_allocate(aTHX); | |
3119 | } | |
a33cf58c | 3120 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3121 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3122 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3123 | } |
14a5cf38 JH |
3124 | return f; |
3125 | } | |
3126 | } | |
3127 | } | |
ee518936 | 3128 | return NULL; |
9e353e3b NIS |
3129 | } |
3130 | ||
1751d015 | 3131 | PerlIO * |
ecdeb87c | 3132 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3133 | { |
3134 | /* This assumes no layers underneath - which is what | |
3135 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3136 | */ | |
ecdeb87c | 3137 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3138 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3139 | const int fd = fileno(stdio); |
9217ff3f | 3140 | char mode[8]; |
ecdeb87c | 3141 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3142 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3143 | if (dfd >= 0) { |
3144 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3145 | goto set_this; | |
ecdeb87c NIS |
3146 | } |
3147 | else { | |
6f207bd3 | 3148 | NOOP; |
ecdeb87c NIS |
3149 | /* FIXME: To avoid messy error recovery if dup fails |
3150 | re-use the existing stdio as though flag was not set | |
3151 | */ | |
3152 | } | |
3153 | } | |
9217ff3f NIS |
3154 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3155 | set_this: | |
694c95cf | 3156 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3157 | if(stdio) { |
3158 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3159 | } | |
1751d015 NIS |
3160 | } |
3161 | return f; | |
3162 | } | |
3163 | ||
0d7a5398 NIS |
3164 | static int |
3165 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3166 | { | |
96a5add6 AL |
3167 | PERL_UNUSED_CONTEXT; |
3168 | ||
0d7a5398 | 3169 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3170 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3171 | */ |
ef8eacb8 AT |
3172 | # if defined(__UCLIBC__) |
3173 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3174 | f->__filedes = -1; | |
3175 | return 1; | |
3176 | # elif defined(__GLIBC__) | |
0d7a5398 | 3177 | /* There may be a better way for GLIBC: |
37725cdc | 3178 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3179 | */ |
3180 | f->_fileno = -1; | |
3181 | return 1; | |
3182 | # elif defined(__sun__) | |
f5992bc4 | 3183 | PERL_UNUSED_ARG(f); |
cfedb851 | 3184 | return 0; |
0d7a5398 NIS |
3185 | # elif defined(__hpux) |
3186 | f->__fileH = 0xff; | |
3187 | f->__fileL = 0xff; | |
3188 | return 1; | |
9837d373 | 3189 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3190 | your platform does not have special entry try this one. |
9837d373 NIS |
3191 | [For OSF only have confirmation for Tru64 (alpha) |
3192 | but assume other OSFs will be similar.] | |
37725cdc | 3193 | */ |
9837d373 | 3194 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3195 | f->_file = -1; |
3196 | return 1; | |
3197 | # elif defined(__FreeBSD__) | |
3198 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3199 | - we could insert a dummy func in the _close function entry |
3200 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3201 | */ |
3202 | f->_file = -1; | |
0c49ea6a SU |
3203 | return 1; |
3204 | # elif defined(__OpenBSD__) | |
3205 | /* There may be a better way on OpenBSD: | |
3206 | - we could insert a dummy func in the _close function entry | |
3207 | f->_close = (int (*)(void *)) dummy_close; | |
3208 | */ | |
3209 | f->_file = -1; | |
0d7a5398 | 3210 | return 1; |
59ad941d IZ |
3211 | # elif defined(__EMX__) |
3212 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3213 | f->_handle = -1; | |
3214 | return 1; | |
0d7a5398 NIS |
3215 | # elif defined(__CYGWIN__) |
3216 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3217 | - we could insert a dummy func in the _close function entry |
3218 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3219 | */ |
3220 | f->_file = -1; | |
3221 | return 1; | |
3222 | # elif defined(WIN32) | |
378eeda7 | 3223 | # if defined(UNDER_CE) |
b475b3e6 JH |
3224 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3225 | structure at all | |
3226 | */ | |
0d7a5398 NIS |
3227 | # else |
3228 | f->_file = -1; | |
3229 | # endif | |
3230 | return 1; | |
3231 | # else | |
3232 | #if 0 | |
37725cdc | 3233 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3234 | (which isn't thread safe) instead |
37725cdc | 3235 | */ |
0d7a5398 NIS |
3236 | # error "Don't know how to set FILE.fileno on your platform" |
3237 | #endif | |
8772537c | 3238 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3239 | return 0; |
3240 | # endif | |
3241 | } | |
3242 | ||
1751d015 | 3243 | IV |
f62ce20a | 3244 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3245 | { |
c4420975 | 3246 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3247 | if (!stdio) { |
3248 | errno = EBADF; | |
3249 | return -1; | |
3250 | } | |
9217ff3f | 3251 | else { |
de009b76 | 3252 | const int fd = fileno(stdio); |
0d7a5398 | 3253 | int invalidate = 0; |
bbfd922f | 3254 | IV result = 0; |
1d791a44 | 3255 | int dupfd = -1; |
4ee39169 | 3256 | dSAVEDERRNO; |
a2e578da MHM |
3257 | #ifdef USE_ITHREADS |
3258 | dVAR; | |
3259 | #endif | |
0d7a5398 | 3260 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3261 | /* Socks lib overrides close() but stdio isn't linked to |
3262 | that library (though we are) - so we must call close() | |
3263 | on sockets on stdio's behalf. | |
3264 | */ | |
0d7a5398 NIS |
3265 | int optval; |
3266 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3267 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3268 | invalidate = 1; |
0d7a5398 | 3269 | #endif |
d8723f43 NC |
3270 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3271 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3272 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3273 | trying to close an already closed handle which somehow it still has | |
3274 | a reference to. (via.xs, I'm looking at you). */ | |
3275 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3276 | /* File descriptor still in use */ | |
0d7a5398 | 3277 | invalidate = 1; |
d8723f43 | 3278 | } |
0d7a5398 | 3279 | if (invalidate) { |
6b4ce6c8 AL |
3280 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3281 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3282 | return 0; | |
3283 | if (stdio == stdout || stdio == stderr) | |
3284 | return PerlIO_flush(f); | |
37725cdc NIS |
3285 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3286 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3287 | fileno slot of the FILE * | |
3288 | */ | |
bbfd922f | 3289 | result = PerlIO_flush(f); |
4ee39169 | 3290 | SAVE_ERRNO; |
6b4ce6c8 | 3291 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3292 | if (!invalidate) { |
9bab90c0 NC |
3293 | #ifdef USE_ITHREADS |
3294 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3295 | /* Right. We need a mutex here because for a brief while we |
3296 | will have the situation that fd is actually closed. Hence if | |
3297 | a second thread were to get into this block, its dup() would | |
3298 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3299 | Then if we get to the dup2() first, we blat the fd back |
3300 | (messing up its temporary as a side effect) only for it to | |
3301 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3302 | ||
3303 | /* There is, of course, a race condition, that any other thread | |
3304 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3305 | for the duration of this little manoeuvrer. Perhaps we |
3306 | should hold an IO mutex for the duration of every IO | |
3307 | operation if we know that invalidate doesn't work on this | |
3308 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3309 | |
3310 | Except that correctness trumps speed. | |
3311 | Advice from klortho #11912. */ | |
3312 | #endif | |
6b4ce6c8 | 3313 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3314 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3315 | if (dupfd < 0) { |
3316 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3317 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3318 | recover from here, or if closing this particular FILE * | |
3319 | is a good idea now. */ | |
3320 | } | |
3321 | #endif | |
3322 | } | |
94ccb807 JH |
3323 | } else { |
3324 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3325 | } |
0d7a5398 | 3326 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3327 | /* We treat error from stdio as success if we invalidated |
3328 | errno may NOT be expected EBADF | |
e8529473 NIS |
3329 | */ |
3330 | if (invalidate && result != 0) { | |
4ee39169 | 3331 | RESTORE_ERRNO; |
0d7a5398 | 3332 | result = 0; |
37725cdc | 3333 | } |
6b4ce6c8 AL |
3334 | #ifdef SOCKS5_VERSION_NAME |
3335 | /* in SOCKS' case, let close() determine return value */ | |
3336 | result = close(fd); | |
3337 | #endif | |
1d791a44 | 3338 | if (dupfd >= 0) { |
0d7a5398 | 3339 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3340 | PerlLIO_close(dupfd); |
711e8db2 | 3341 | #ifdef USE_ITHREADS |
9bab90c0 | 3342 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3343 | #endif |
9217ff3f NIS |
3344 | } |
3345 | return result; | |
37725cdc | 3346 | } |
1751d015 NIS |
3347 | } |
3348 | ||
9e353e3b | 3349 | SSize_t |
f62ce20a | 3350 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3351 | { |
97aff369 | 3352 | dVAR; |
abf9167d | 3353 | FILE * s; |
14a5cf38 | 3354 | SSize_t got = 0; |
abf9167d DM |
3355 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3356 | return -1; | |
3357 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3358 | for (;;) { |
3359 | if (count == 1) { | |
3360 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3361 | /* | |
3362 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3363 | * stdio does not do that for fread() | |
3364 | */ | |
de009b76 | 3365 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3366 | if (ch != EOF) { |
3367 | *buf = ch; | |
3368 | got = 1; | |
3369 | } | |
14a5cf38 | 3370 | } |
4d948241 NIS |
3371 | else |
3372 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3373 | if (got == 0 && PerlSIO_ferror(s)) |
3374 | got = -1; | |
42a7a32f | 3375 | if (got >= 0 || errno != EINTR) |
4d948241 | 3376 | break; |
abf9167d DM |
3377 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3378 | return -1; | |
42a7a32f | 3379 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3380 | } |
14a5cf38 | 3381 | return got; |
9e353e3b NIS |
3382 | } |
3383 | ||
3384 | SSize_t | |
f62ce20a | 3385 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3386 | { |
14a5cf38 | 3387 | SSize_t unread = 0; |
c4420975 | 3388 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3389 | |
313e59c8 | 3390 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3391 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3392 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3393 | STDCHAR *base = PerlIO_get_base(f); | |
3394 | SSize_t cnt = PerlIO_get_cnt(f); | |
3395 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3396 | SSize_t avail = ptr - base; | |
3397 | if (avail > 0) { | |
3398 | if (avail > count) { | |
3399 | avail = count; | |
3400 | } | |
3401 | ptr -= avail; | |
3402 | Move(buf-avail,ptr,avail,STDCHAR); | |
3403 | count -= avail; | |
3404 | unread += avail; | |
3405 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3406 | if (PerlSIO_feof(s) && unread >= 0) |
3407 | PerlSIO_clearerr(s); | |
3408 | } | |
3409 | } | |
313e59c8 NIS |
3410 | else |
3411 | #endif | |
3412 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3413 | /* We can get pointer to buffer but not its base |
3414 | Do ungetc() but check chars are ending up in the | |
3415 | buffer | |
3416 | */ | |
3417 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3418 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3419 | while (count > 0) { | |
de009b76 | 3420 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3421 | if (ungetc(ch,s) != ch) { |
3422 | /* ungetc did not work */ | |
3423 | break; | |
3424 | } | |
3425 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3426 | /* Did not change pointer as expected */ | |
3427 | fgetc(s); /* get char back again */ | |
3428 | break; | |
3429 | } | |
3430 | /* It worked ! */ | |
3431 | count--; | |
3432 | unread++; | |
93679785 NIS |
3433 | } |
3434 | } | |
3435 | ||
3436 | if (count > 0) { | |
3437 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3438 | } |
3439 | return unread; | |
9e353e3b NIS |
3440 | } |
3441 | ||
3442 | SSize_t | |
f62ce20a | 3443 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3444 | { |
97aff369 | 3445 | dVAR; |
4d948241 | 3446 | SSize_t got; |
abf9167d DM |
3447 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3448 | return -1; | |
4d948241 NIS |
3449 | for (;;) { |
3450 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3451 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3452 | if (got >= 0 || errno != EINTR) |
4d948241 | 3453 | break; |
abf9167d DM |
3454 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3455 | return -1; | |
42a7a32f | 3456 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3457 | } |
3458 | return got; | |
9e353e3b NIS |
3459 | } |
3460 | ||
94a175e1 | 3461 | IV |
f62ce20a | 3462 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3463 | { |
c4420975 | 3464 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3465 | PERL_UNUSED_CONTEXT; |
3466 | ||
94a175e1 | 3467 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3468 | } |
3469 | ||
3470 | Off_t | |
f62ce20a | 3471 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3472 | { |
c4420975 | 3473 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3474 | PERL_UNUSED_CONTEXT; |
3475 | ||
94a175e1 | 3476 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3477 | } |
3478 | ||
3479 | IV | |
f62ce20a | 3480 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3481 | { |
c4420975 | 3482 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3483 | PERL_UNUSED_CONTEXT; |
3484 | ||
14a5cf38 JH |
3485 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3486 | return PerlSIO_fflush(stdio); | |
3487 | } | |
3488 | else { | |
6f207bd3 | 3489 | NOOP; |
88b61e10 | 3490 | #if 0 |
14a5cf38 JH |
3491 | /* |
3492 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3493 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3494 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3495 | * layer read-to-read |
14a5cf38 JH |
3496 | */ |
3497 | /* | |
71200d45 | 3498 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3499 | */ |
4ee39169 | 3500 | dSAVE_ERRNO; |
14a5cf38 | 3501 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3502 | RESTORE_ERRNO; |
88b61e10 | 3503 | #endif |
14a5cf38 JH |
3504 | } |
3505 | return 0; | |
9e353e3b NIS |
3506 | } |
3507 | ||
3508 | IV | |
f62ce20a | 3509 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3510 | { |
96a5add6 AL |
3511 | PERL_UNUSED_CONTEXT; |
3512 | ||
14a5cf38 | 3513 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3514 | } |
3515 | ||
3516 | IV | |
f62ce20a | 3517 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3518 | { |
96a5add6 AL |
3519 | PERL_UNUSED_CONTEXT; |
3520 | ||
263df5f1 | 3521 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3522 | } |
3523 | ||
3524 | void | |
f62ce20a | 3525 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3526 | { |
96a5add6 AL |
3527 | PERL_UNUSED_CONTEXT; |
3528 | ||
14a5cf38 | 3529 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3530 | } |
3531 | ||
3532 | void | |
f62ce20a | 3533 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3534 | { |
96a5add6 AL |
3535 | PERL_UNUSED_CONTEXT; |
3536 | ||
9e353e3b | 3537 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3538 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3539 | #else |
bd61b366 | 3540 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3541 | #endif |
3542 | } | |
3543 | ||
3544 | #ifdef FILE_base | |
3545 | STDCHAR * | |
f62ce20a | 3546 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3547 | { |
c4420975 | 3548 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3549 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3550 | } |
3551 | ||
3552 | Size_t | |
f62ce20a | 3553 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3554 | { |
c4420975 | 3555 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3556 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3557 | } |
3558 | #endif | |
3559 | ||
3560 | #ifdef USE_STDIO_PTR | |
3561 | STDCHAR * | |
f62ce20a | 3562 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3563 | { |
c4420975 | 3564 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3565 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3566 | } |
3567 | ||
3568 | SSize_t | |
f62ce20a | 3569 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3570 | { |
c4420975 | 3571 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3572 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3573 | } |
3574 | ||
3575 | void | |
f62ce20a | 3576 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3577 | { |
c4420975 | 3578 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3579 | if (ptr != NULL) { |
9e353e3b | 3580 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3581 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3582 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3583 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3584 | #endif |
3585 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3586 | /* |
71200d45 | 3587 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3588 | */ |
3589 | return; | |
9e353e3b | 3590 | #endif |
22569500 | 3591 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3592 | PerlProc_abort(); |
22569500 | 3593 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3594 | } |
3595 | /* | |
71200d45 | 3596 | * Now (or only) set cnt |
14a5cf38 | 3597 | */ |
9e353e3b | 3598 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3599 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3600 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3601 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3602 | PerlSIO_set_ptr(stdio, |
3603 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3604 | cnt)); | |
22569500 | 3605 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3606 | PerlProc_abort(); |
22569500 NIS |
3607 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3608 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3609 | } |
3610 | ||
93679785 | 3611 | |
9e353e3b NIS |
3612 | #endif |
3613 | ||
93679785 NIS |
3614 | IV |
3615 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3616 | { | |
abf9167d | 3617 | FILE * stdio; |
93679785 | 3618 | int c; |
96a5add6 | 3619 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3620 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3621 | return -1; | |
3622 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3623 | |
93679785 NIS |
3624 | /* |
3625 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3626 | */ | |
3627 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3628 | if (PerlSIO_fflush(stdio) != 0) | |
3629 | return EOF; | |
3630 | } | |
f3be3723 BL |
3631 | for (;;) { |
3632 | c = PerlSIO_fgetc(stdio); | |
3633 | if (c != EOF) | |
3634 | break; | |
3635 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3636 | return EOF; | |
abf9167d DM |
3637 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3638 | return -1; | |
f3be3723 BL |
3639 | SETERRNO(0,0); |
3640 | } | |
93679785 NIS |
3641 | |
3642 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3643 | |
3644 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3645 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3646 | /* Fake ungetc() to the real buffer in case system's ungetc |
3647 | goes elsewhere | |
3648 | */ | |
3649 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3650 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3651 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3652 | if (ptr == base+1) { | |
3653 | *--ptr = (STDCHAR) c; | |
3654 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3655 | if (PerlSIO_feof(stdio)) | |
3656 | PerlSIO_clearerr(stdio); | |
3657 | return 0; | |
3658 | } | |
3659 | } | |
313e59c8 NIS |
3660 | else |
3661 | #endif | |
3662 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3663 | STDCHAR ch = c; |
3664 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3665 | return 0; | |
3666 | } | |
3667 | } | |
93679785 NIS |
3668 | #endif |
3669 | ||
3670 | #if defined(VMS) | |
3671 | /* An ungetc()d char is handled separately from the regular | |
3672 | * buffer, so we stuff it in the buffer ourselves. | |
3673 | * Should never get called as should hit code above | |
3674 | */ | |
bad9695d NIS |
3675 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3676 | (*stdio)->_cnt++; | |
93679785 NIS |
3677 | #else |
3678 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3679 | using ungetc(). |
93679785 NIS |
3680 | */ |
3681 | if (PerlSIO_ungetc(c, stdio) != c) | |
3682 | return EOF; | |
3683 | #endif | |
3684 | return 0; | |
3685 | } | |
3686 | ||
3687 | ||
3688 | ||
27da23d5 | 3689 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3690 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3691 | "stdio", |
3692 | sizeof(PerlIOStdio), | |
86e05cf2 | 3693 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3694 | PerlIOStdio_pushed, |
2376d97d | 3695 | PerlIOBase_popped, |
14a5cf38 | 3696 | PerlIOStdio_open, |
86e05cf2 | 3697 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3698 | NULL, |
3699 | PerlIOStdio_fileno, | |
71200d45 | 3700 | PerlIOStdio_dup, |
14a5cf38 JH |
3701 | PerlIOStdio_read, |
3702 | PerlIOStdio_unread, | |
3703 | PerlIOStdio_write, | |
3704 | PerlIOStdio_seek, | |
3705 | PerlIOStdio_tell, | |
3706 | PerlIOStdio_close, | |
3707 | PerlIOStdio_flush, | |
3708 | PerlIOStdio_fill, | |
3709 | PerlIOStdio_eof, | |
3710 | PerlIOStdio_error, | |
3711 | PerlIOStdio_clearerr, | |
3712 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3713 | #ifdef FILE_base |
14a5cf38 JH |
3714 | PerlIOStdio_get_base, |
3715 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3716 | #else |
14a5cf38 JH |
3717 | NULL, |
3718 | NULL, | |
9e353e3b NIS |
3719 | #endif |
3720 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3721 | PerlIOStdio_get_ptr, |
3722 | PerlIOStdio_get_cnt, | |
15b61c98 | 3723 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3724 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3725 | # else |
3726 | NULL, | |
3727 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3728 | #else | |
3729 | NULL, | |
14a5cf38 JH |
3730 | NULL, |
3731 | NULL, | |
15b61c98 | 3732 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3733 | }; |
3734 | ||
b9d6bf13 JH |
3735 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3736 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3737 | FILE * |
81428673 | 3738 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3739 | { |
e87a358a | 3740 | dTHX; |
81428673 NIS |
3741 | FILE *stdio = NULL; |
3742 | if (PerlIOValid(f)) { | |
3743 | char buf[8]; | |
3744 | PerlIO_flush(f); | |
3745 | if (!mode || !*mode) { | |
3746 | mode = PerlIO_modestr(f, buf); | |
3747 | } | |
3748 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3749 | if (stdio) { | |
3750 | PerlIOl *l = *f; | |
9f75cc58 | 3751 | PerlIO *f2; |
81428673 NIS |
3752 | /* De-link any lower layers so new :stdio sticks */ |
3753 | *f = NULL; | |
a0714e2c | 3754 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3755 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3756 | s->stdio = stdio; |
6b54a403 | 3757 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3758 | /* Link previous lower layers under new one */ |
3759 | *PerlIONext(f) = l; | |
3760 | } | |
3761 | else { | |
3762 | /* restore layers list */ | |
3763 | *f = l; | |
3764 | } | |
a33cf58c | 3765 | } |
14a5cf38 JH |
3766 | } |
3767 | return stdio; | |
9e353e3b NIS |
3768 | } |
3769 | ||
81428673 | 3770 | |
9e353e3b NIS |
3771 | FILE * |
3772 | PerlIO_findFILE(PerlIO *f) | |
3773 | { | |
14a5cf38 | 3774 | PerlIOl *l = *f; |
bbbc33d0 | 3775 | FILE *stdio; |
14a5cf38 JH |
3776 | while (l) { |
3777 | if (l->tab == &PerlIO_stdio) { | |
3778 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3779 | return s->stdio; | |
3780 | } | |
3781 | l = *PerlIONext(&l); | |
f7e7eb72 | 3782 | } |
4b069b44 | 3783 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3784 | /* However, we're not really exporting a FILE * to someone else (who |
3785 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3786 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3787 | descriptor. We have to do this, because if the loop above returns you |
3788 | the FILE *, then *it* didn't increase any reference count. So there's | |
3789 | only one way to be consistent. */ | |
3790 | stdio = PerlIO_exportFILE(f, NULL); | |
3791 | if (stdio) { | |
3792 | const int fd = fileno(stdio); | |
3793 | if (fd >= 0) | |
3794 | PerlIOUnix_refcnt_dec(fd); | |
3795 | } | |
3796 | return stdio; | |
9e353e3b NIS |
3797 | } |
3798 | ||
b9d6bf13 | 3799 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3800 | void |
3801 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3802 | { | |
27da23d5 | 3803 | dVAR; |
22569500 NIS |
3804 | PerlIOl *l; |
3805 | while ((l = *p)) { | |
3806 | if (l->tab == &PerlIO_stdio) { | |
3807 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3808 | if (s->stdio == f) { | |
3809 | dTHX; | |
6b54a403 NC |
3810 | const int fd = fileno(f); |
3811 | if (fd >= 0) | |
3812 | PerlIOUnix_refcnt_dec(fd); | |
22569500 NIS |
3813 | PerlIO_pop(aTHX_ p); |
3814 | return; | |
3815 | } | |
3816 | } | |
3817 | p = PerlIONext(p); | |
3818 | } | |
3819 | return; | |
9e353e3b NIS |
3820 | } |
3821 | ||
3822 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3823 | /* |
71200d45 | 3824 | * perlio buffer layer |
14a5cf38 | 3825 | */ |
9e353e3b | 3826 | |
5e2ab84b | 3827 | IV |
2dc2558e | 3828 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3829 | { |
14a5cf38 | 3830 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3831 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3832 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3833 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3834 | } | |
4b069b44 | 3835 | if (*PerlIONext(f)) { |
de009b76 | 3836 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3837 | if (posn != (Off_t) - 1) { |
3838 | b->posn = posn; | |
3839 | } | |
14a5cf38 | 3840 | } |
2dc2558e | 3841 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3842 | } |
3843 | ||
9e353e3b | 3844 | PerlIO * |
14a5cf38 JH |
3845 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3846 | IV n, const char *mode, int fd, int imode, int perm, | |
3847 | PerlIO *f, int narg, SV **args) | |
3848 | { | |
04892f78 | 3849 | if (PerlIOValid(f)) { |
14a5cf38 | 3850 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3851 | PerlIO_funcs *tab = |
3852 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3853 | if (tab && tab->Open) | |
3854 | next = | |
3855 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3856 | next, narg, args); | |
2dc2558e | 3857 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3858 | return NULL; |
3859 | } | |
3860 | } | |
3861 | else { | |
04892f78 | 3862 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3863 | int init = 0; |
3b6c1aba | 3864 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3865 | init = 1; |
3866 | /* | |
71200d45 | 3867 | * mode++; |
14a5cf38 JH |
3868 | */ |
3869 | } | |
67363c0d JH |
3870 | if (tab && tab->Open) |
3871 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3872 | f, narg, args); | |
3873 | else | |
3874 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3875 | if (f) { |
22569500 | 3876 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3877 | /* |
3878 | * if push fails during open, open fails. close will pop us. | |
3879 | */ | |
3880 | PerlIO_close (f); | |
3881 | return NULL; | |
3882 | } else { | |
3883 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3884 | if (init && fd == 2) { |
3885 | /* | |
3886 | * Initial stderr is unbuffered | |
3887 | */ | |
3888 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3889 | } | |
23b84778 IZ |
3890 | #ifdef PERLIO_USING_CRLF |
3891 | # ifdef PERLIO_IS_BINMODE_FD | |
3892 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3893 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3894 | else |
3895 | # endif | |
3896 | /* | |
3897 | * do something about failing setmode()? --jhi | |
3898 | */ | |
3899 | PerlLIO_setmode(fd, O_BINARY); | |
3900 | #endif | |
8c8488cd | 3901 | #ifdef VMS |
8c8488cd CB |
3902 | /* Enable line buffering with record-oriented regular files |
3903 | * so we don't introduce an extraneous record boundary when | |
3904 | * the buffer fills up. | |
3905 | */ | |
3906 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3907 | Stat_t st; | |
3908 | if (PerlLIO_fstat(fd, &st) == 0 | |
3909 | && S_ISREG(st.st_mode) | |
3910 | && (st.st_fab_rfm == FAB$C_VAR | |
3911 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3912 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3913 | } | |
3914 | } | |
3915 | #endif | |
14a5cf38 JH |
3916 | } |
3917 | } | |
ee518936 | 3918 | } |
14a5cf38 | 3919 | return f; |
9e353e3b NIS |
3920 | } |
3921 | ||
14a5cf38 JH |
3922 | /* |
3923 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3924 | * read or write state. For write state, we put the postponed data through |
3925 | * the next layers. For read state, we seek() the next layers to the | |
3926 | * offset given by current position in the buffer, and discard the buffer | |
3927 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3928 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3929 | */ |
9e353e3b | 3930 | IV |
f62ce20a | 3931 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3932 | { |
dcda55fc | 3933 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3934 | int code = 0; |
04892f78 | 3935 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3936 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3937 | /* | |
71200d45 | 3938 | * write() the buffer |
14a5cf38 | 3939 | */ |
de009b76 AL |
3940 | const STDCHAR *buf = b->buf; |
3941 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3942 | while (p < b->ptr) { |
3943 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3944 | if (count > 0) { | |
3945 | p += count; | |
3946 | } | |
3947 | else if (count < 0 || PerlIO_error(n)) { | |
3948 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3949 | code = -1; | |
3950 | break; | |
3951 | } | |
3952 | } | |
3953 | b->posn += (p - buf); | |
3954 | } | |
3955 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3956 | STDCHAR *buf = PerlIO_get_base(f); | |
3957 | /* | |
71200d45 | 3958 | * Note position change |
14a5cf38 JH |
3959 | */ |
3960 | b->posn += (b->ptr - buf); | |
3961 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3962 | /* We did not consume all of it - try and seek downstream to |
3963 | our logical position | |
14a5cf38 | 3964 | */ |
4b069b44 | 3965 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3966 | /* Reload n as some layers may pop themselves on seek */ |
3967 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3968 | } |
ba5c3fe9 | 3969 | else { |
4b069b44 NIS |
3970 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3971 | data is lost for good - so return saying "ok" having undone | |
3972 | the position adjust | |
3973 | */ | |
3974 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3975 | return code; |
3976 | } | |
14a5cf38 JH |
3977 | } |
3978 | } | |
3979 | b->ptr = b->end = b->buf; | |
3980 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3981 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3982 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3983 | code = -1; |
3984 | return code; | |
6f9d8c32 NIS |
3985 | } |
3986 | ||
93c2c2ec IZ |
3987 | /* This discards the content of the buffer after b->ptr, and rereads |
3988 | * the buffer from the position off in the layer downstream; here off | |
3989 | * is at offset corresponding to b->ptr - b->buf. | |
3990 | */ | |
06da4f11 | 3991 | IV |
f62ce20a | 3992 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3993 | { |
dcda55fc | 3994 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3995 | PerlIO *n = PerlIONext(f); |
3996 | SSize_t avail; | |
3997 | /* | |
4b069b44 NIS |
3998 | * Down-stream flush is defined not to loose read data so is harmless. |
3999 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 4000 | */ |
93c2c2ec | 4001 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
4002 | return -1; |
4003 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 4004 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
4005 | |
4006 | if (!b->buf) | |
22569500 | 4007 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 4008 | |
0f0eef27 | 4009 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4010 | |
14a5cf38 | 4011 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4012 | |
4013 | if (!PerlIOValid(n)) { | |
4014 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4015 | return -1; | |
4016 | } | |
4017 | ||
14a5cf38 JH |
4018 | if (PerlIO_fast_gets(n)) { |
4019 | /* | |
04892f78 | 4020 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4021 | * ->Read() because that will loop till it gets what we asked for |
4022 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4023 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4024 | */ |
4025 | avail = PerlIO_get_cnt(n); | |
4026 | if (avail <= 0) { | |
4027 | avail = PerlIO_fill(n); | |
4028 | if (avail == 0) | |
4029 | avail = PerlIO_get_cnt(n); | |
4030 | else { | |
4031 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4032 | avail = 0; | |
4033 | } | |
4034 | } | |
4035 | if (avail > 0) { | |
4036 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4037 | const SSize_t cnt = avail; |
eb160463 | 4038 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4039 | avail = b->bufsiz; |
4040 | Copy(ptr, b->buf, avail, STDCHAR); | |
4041 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4042 | } | |
4043 | } | |
4044 | else { | |
4045 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4046 | } | |
4047 | if (avail <= 0) { | |
4048 | if (avail == 0) | |
4049 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4050 | else | |
4051 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
4052 | return -1; | |
4053 | } | |
4054 | b->end = b->buf + avail; | |
4055 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4056 | return 0; | |
06da4f11 NIS |
4057 | } |
4058 | ||
6f9d8c32 | 4059 | SSize_t |
f62ce20a | 4060 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4061 | { |
04892f78 | 4062 | if (PerlIOValid(f)) { |
dcda55fc | 4063 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4064 | if (!b->ptr) |
4065 | PerlIO_get_base(f); | |
f62ce20a | 4066 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4067 | } |
4068 | return 0; | |
6f9d8c32 NIS |
4069 | } |
4070 | ||
9e353e3b | 4071 | SSize_t |
f62ce20a | 4072 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4073 | { |
14a5cf38 | 4074 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4075 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4076 | SSize_t unread = 0; |
4077 | SSize_t avail; | |
4078 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4079 | PerlIO_flush(f); | |
4080 | if (!b->buf) | |
4081 | PerlIO_get_base(f); | |
4082 | if (b->buf) { | |
4083 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4084 | /* | |
4085 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4086 | * which have been read back to buffer start |
14a5cf38 JH |
4087 | */ |
4088 | avail = (b->ptr - b->buf); | |
4089 | } | |
4090 | else { | |
4091 | /* | |
4092 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4093 | * unread |
14a5cf38 JH |
4094 | */ |
4095 | avail = b->bufsiz; | |
4096 | b->end = b->buf + avail; | |
4097 | b->ptr = b->end; | |
4098 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4099 | /* | |
71200d45 | 4100 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4101 | */ |
4102 | b->posn -= b->bufsiz; | |
4103 | } | |
4104 | if (avail > (SSize_t) count) { | |
4105 | /* | |
71200d45 | 4106 | * If we have space for more than count, just move count |
14a5cf38 JH |
4107 | */ |
4108 | avail = count; | |
4109 | } | |
4110 | if (avail > 0) { | |
4111 | b->ptr -= avail; | |
4112 | buf -= avail; | |
4113 | /* | |
4114 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4115 | * there |
14a5cf38 JH |
4116 | */ |
4117 | if (buf != b->ptr) { | |
4118 | Copy(buf, b->ptr, avail, STDCHAR); | |
4119 | } | |
4120 | count -= avail; | |
4121 | unread += avail; | |
4122 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4123 | } | |
4124 | } | |
93679785 NIS |
4125 | if (count > 0) { |
4126 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4127 | } | |
14a5cf38 | 4128 | return unread; |
760ac839 LW |
4129 | } |
4130 | ||
9e353e3b | 4131 | SSize_t |
f62ce20a | 4132 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4133 | { |
de009b76 | 4134 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4135 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4136 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4137 | Size_t written = 0; |
4138 | if (!b->buf) | |
4139 | PerlIO_get_base(f); | |
4140 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4141 | return 0; | |
0678cb22 NIS |
4142 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4143 | if (PerlIO_flush(f) != 0) { | |
4144 | return 0; | |
4145 | } | |
4146 | } | |
ee56a6b9 CS |
4147 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4148 | flushptr = buf + count; | |
4149 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4150 | --flushptr; | |
4151 | } | |
14a5cf38 JH |
4152 | while (count > 0) { |
4153 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
4154 | if ((SSize_t) count < avail) | |
4155 | avail = count; | |
ee56a6b9 CS |
4156 | if (flushptr > buf && flushptr <= buf + avail) |
4157 | avail = flushptr - buf; | |
14a5cf38 | 4158 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4159 | if (avail) { |
4160 | Copy(buf, b->ptr, avail, STDCHAR); | |
4161 | count -= avail; | |
4162 | buf += avail; | |
4163 | written += avail; | |
4164 | b->ptr += avail; | |
4165 | if (buf == flushptr) | |
4166 | PerlIO_flush(f); | |
14a5cf38 JH |
4167 | } |
4168 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4169 | if (PerlIO_flush(f) == -1) |
4170 | return -1; | |
14a5cf38 JH |
4171 | } |
4172 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4173 | PerlIO_flush(f); | |
4174 | return written; | |
9e353e3b NIS |
4175 | } |
4176 | ||
94a175e1 | 4177 | IV |
f62ce20a | 4178 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4179 | { |
14a5cf38 JH |
4180 | IV code; |
4181 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4182 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4183 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4184 | if (code == 0) { | |
de009b76 | 4185 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4186 | b->posn = PerlIO_tell(PerlIONext(f)); |
4187 | } | |
9e353e3b | 4188 | } |
14a5cf38 | 4189 | return code; |
9e353e3b NIS |
4190 | } |
4191 | ||
4192 | Off_t | |
f62ce20a | 4193 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4194 | { |
dcda55fc | 4195 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4196 | /* |
71200d45 | 4197 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4198 | */ |
4199 | Off_t posn = b->posn; | |
37725cdc | 4200 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4201 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4202 | #if 1 | |
4203 | /* As O_APPEND files are normally shared in some sense it is better | |
4204 | to flush : | |
4205 | */ | |
4206 | PerlIO_flush(f); | |
4207 | #else | |
37725cdc | 4208 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4209 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4210 | #endif | |
4211 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4212 | } | |
14a5cf38 JH |
4213 | if (b->buf) { |
4214 | /* | |
71200d45 | 4215 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4216 | */ |
4217 | posn += (b->ptr - b->buf); | |
4218 | } | |
4219 | return posn; | |
9e353e3b NIS |
4220 | } |
4221 | ||
4222 | IV | |
44798d05 NIS |
4223 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4224 | { | |
de009b76 AL |
4225 | const IV code = PerlIOBase_popped(aTHX_ f); |
4226 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4227 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4228 | Safefree(b->buf); | |
4229 | } | |
dcda55fc | 4230 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4231 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4232 | return code; | |
4233 | } | |
4234 | ||
4235 | IV | |
f62ce20a | 4236 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4237 | { |
de009b76 AL |
4238 | const IV code = PerlIOBase_close(aTHX_ f); |
4239 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4240 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4241 | Safefree(b->buf); |
14a5cf38 | 4242 | } |
dcda55fc | 4243 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4244 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4245 | return code; | |
760ac839 LW |
4246 | } |
4247 | ||
9e353e3b | 4248 | STDCHAR * |
f62ce20a | 4249 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4250 | { |
dcda55fc | 4251 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4252 | if (!b->buf) |
4253 | PerlIO_get_base(f); | |
4254 | return b->ptr; | |
9e353e3b NIS |
4255 | } |
4256 | ||
05d1247b | 4257 | SSize_t |
f62ce20a | 4258 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4259 | { |
dcda55fc | 4260 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4261 | if (!b->buf) |
4262 | PerlIO_get_base(f); | |
4263 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4264 | return (b->end - b->ptr); | |
4265 | return 0; | |
9e353e3b NIS |
4266 | } |
4267 | ||
4268 | STDCHAR * | |
f62ce20a | 4269 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4270 | { |
dcda55fc | 4271 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4272 | PERL_UNUSED_CONTEXT; |
4273 | ||
14a5cf38 JH |
4274 | if (!b->buf) { |
4275 | if (!b->bufsiz) | |
1810cd7c | 4276 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4277 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4278 | if (!b->buf) { |
4279 | b->buf = (STDCHAR *) & b->oneword; | |
4280 | b->bufsiz = sizeof(b->oneword); | |
4281 | } | |
dcda55fc | 4282 | b->end = b->ptr = b->buf; |
06da4f11 | 4283 | } |
14a5cf38 | 4284 | return b->buf; |
9e353e3b NIS |
4285 | } |
4286 | ||
4287 | Size_t | |
f62ce20a | 4288 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4289 | { |
dcda55fc | 4290 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4291 | if (!b->buf) |
4292 | PerlIO_get_base(f); | |
4293 | return (b->end - b->buf); | |
9e353e3b NIS |
4294 | } |
4295 | ||
4296 | void | |
f62ce20a | 4297 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4298 | { |
dcda55fc | 4299 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4300 | #ifndef DEBUGGING |
4301 | PERL_UNUSED_ARG(cnt); | |
4302 | #endif | |
14a5cf38 JH |
4303 | if (!b->buf) |
4304 | PerlIO_get_base(f); | |
4305 | b->ptr = ptr; | |
b727803b RGS |
4306 | assert(PerlIO_get_cnt(f) == cnt); |
4307 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4308 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4309 | } |
4310 | ||
71200d45 | 4311 | PerlIO * |
ecdeb87c | 4312 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4313 | { |
ecdeb87c | 4314 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4315 | } |
4316 | ||
4317 | ||
4318 | ||
27da23d5 | 4319 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4320 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4321 | "perlio", |
4322 | sizeof(PerlIOBuf), | |
86e05cf2 | 4323 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4324 | PerlIOBuf_pushed, |
44798d05 | 4325 | PerlIOBuf_popped, |
14a5cf38 | 4326 | PerlIOBuf_open, |
86e05cf2 | 4327 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4328 | NULL, |
4329 | PerlIOBase_fileno, | |
71200d45 | 4330 | PerlIOBuf_dup, |
14a5cf38 JH |
4331 | PerlIOBuf_read, |
4332 | PerlIOBuf_unread, | |
4333 | PerlIOBuf_write, | |
4334 | PerlIOBuf_seek, | |
4335 | PerlIOBuf_tell, | |
4336 | PerlIOBuf_close, | |
4337 | PerlIOBuf_flush, | |
4338 | PerlIOBuf_fill, | |
4339 | PerlIOBase_eof, | |
4340 | PerlIOBase_error, | |
4341 | PerlIOBase_clearerr, | |
4342 | PerlIOBase_setlinebuf, | |
4343 | PerlIOBuf_get_base, | |
4344 | PerlIOBuf_bufsiz, | |
4345 | PerlIOBuf_get_ptr, | |
4346 | PerlIOBuf_get_cnt, | |
4347 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4348 | }; |
4349 | ||
66ecd56b | 4350 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4351 | /* |
71200d45 | 4352 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4353 | */ |
5e2ab84b NIS |
4354 | |
4355 | IV | |
f62ce20a | 4356 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4357 | { |
14a5cf38 | 4358 | /* |
71200d45 | 4359 | * Should never happen |
14a5cf38 JH |
4360 | */ |
4361 | PerlIO_flush(f); | |
4362 | return 0; | |
5e2ab84b NIS |
4363 | } |
4364 | ||
4365 | IV | |
f62ce20a | 4366 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4367 | { |
14a5cf38 | 4368 | /* |
71200d45 | 4369 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4370 | */ |
4371 | PerlIO_flush(f); | |
4372 | return PerlIO_close(f); | |
5e2ab84b NIS |
4373 | } |
4374 | ||
94a175e1 | 4375 | IV |
f62ce20a | 4376 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4377 | { |
14a5cf38 | 4378 | /* |
71200d45 | 4379 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4380 | */ |
4381 | PerlIO_flush(f); | |
4382 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4383 | } |
4384 | ||
4385 | ||
4386 | IV | |
f62ce20a | 4387 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4388 | { |
dcda55fc | 4389 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4390 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4391 | Safefree(b->buf); |
14a5cf38 JH |
4392 | b->buf = NULL; |
4393 | } | |
4394 | PerlIO_pop(aTHX_ f); | |
4395 | return 0; | |
5e2ab84b NIS |
4396 | } |
4397 | ||
4398 | void | |
f62ce20a | 4399 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4400 | { |
14a5cf38 JH |
4401 | if (cnt <= 0) { |
4402 | PerlIO_flush(f); | |
4403 | } | |
4404 | else { | |
f62ce20a | 4405 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4406 | } |
5e2ab84b NIS |
4407 | } |
4408 | ||
4409 | IV | |
2dc2558e | 4410 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4411 | { |
de009b76 | 4412 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4413 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4414 | /* |
71200d45 NIS |
4415 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4416 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4417 | */ |
4418 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4419 | (PerlIOBase(PerlIONext(f))-> | |
4420 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4421 | return code; | |
5e2ab84b NIS |
4422 | } |
4423 | ||
4424 | SSize_t | |
f62ce20a | 4425 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4426 | { |
14a5cf38 JH |
4427 | SSize_t avail = PerlIO_get_cnt(f); |
4428 | SSize_t got = 0; | |
eb160463 | 4429 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4430 | avail = count; |
4431 | if (avail > 0) | |
f62ce20a | 4432 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4433 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4434 | const SSize_t more = |
14a5cf38 JH |
4435 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4436 | if (more >= 0 || got == 0) | |
4437 | got += more; | |
4438 | } | |
4439 | return got; | |
5e2ab84b NIS |
4440 | } |
4441 | ||
27da23d5 | 4442 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4443 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4444 | "pending", |
4445 | sizeof(PerlIOBuf), | |
86e05cf2 | 4446 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4447 | PerlIOPending_pushed, |
44798d05 | 4448 | PerlIOBuf_popped, |
14a5cf38 | 4449 | NULL, |
86e05cf2 | 4450 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4451 | NULL, |
4452 | PerlIOBase_fileno, | |
71200d45 | 4453 | PerlIOBuf_dup, |
14a5cf38 JH |
4454 | PerlIOPending_read, |
4455 | PerlIOBuf_unread, | |
4456 | PerlIOBuf_write, | |
4457 | PerlIOPending_seek, | |
4458 | PerlIOBuf_tell, | |
4459 | PerlIOPending_close, | |
4460 | PerlIOPending_flush, | |
4461 | PerlIOPending_fill, | |
4462 | PerlIOBase_eof, | |
4463 | PerlIOBase_error, | |
4464 | PerlIOBase_clearerr, | |
4465 | PerlIOBase_setlinebuf, | |
4466 | PerlIOBuf_get_base, | |
4467 | PerlIOBuf_bufsiz, | |
4468 | PerlIOBuf_get_ptr, | |
4469 | PerlIOBuf_get_cnt, | |
4470 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4471 | }; |
4472 | ||
4473 | ||
4474 | ||
4475 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4476 | /* |
4477 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4478 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4479 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4480 | * |
4481 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4482 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4483 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4484 | * that it ends at c->nl; these two cases can be distinguished by | |
4485 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4486 | * _unread() and _flush() calls. | |
4487 | * It only matters for read operations. | |
66ecd56b NIS |
4488 | */ |
4489 | ||
14a5cf38 | 4490 | typedef struct { |
22569500 NIS |
4491 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4492 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4493 | * buffer */ |
99efab12 NIS |
4494 | } PerlIOCrlf; |
4495 | ||
ff1e3883 JD |
4496 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4497 | * Otherwise the :crlf layer would always revert back to | |
4498 | * raw mode. | |
4499 | */ | |
4500 | static void | |
4501 | S_inherit_utf8_flag(PerlIO *f) | |
4502 | { | |
4503 | PerlIO *g = PerlIONext(f); | |
4504 | if (PerlIOValid(g)) { | |
4505 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4506 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4507 | } | |
4508 | } | |
4509 | } | |
4510 | ||
f5b9d040 | 4511 | IV |
2dc2558e | 4512 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4513 | { |
14a5cf38 JH |
4514 | IV code; |
4515 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4516 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4517 | #if 0 |
14a5cf38 | 4518 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4519 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4520 | PerlIOBase(f)->flags); |
5e2ab84b | 4521 | #endif |
8229d19f | 4522 | { |
5da08ab0 LT |
4523 | /* If the old top layer is a CRLF layer, reactivate it (if |
4524 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4525 | PerlIO *g = PerlIONext(f); |
7826b36f | 4526 | if (PerlIOValid(g)) { |
8229d19f JH |
4527 | PerlIOl *b = PerlIOBase(g); |
4528 | if (b && b->tab == &PerlIO_crlf) { | |
4529 | if (!(b->flags & PERLIO_F_CRLF)) | |
4530 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4531 | S_inherit_utf8_flag(g); |
8229d19f JH |
4532 | PerlIO_pop(aTHX_ f); |
4533 | return code; | |
7826b36f | 4534 | } |
8229d19f JH |
4535 | } |
4536 | } | |
ff1e3883 | 4537 | S_inherit_utf8_flag(f); |
14a5cf38 | 4538 | return code; |
f5b9d040 NIS |
4539 | } |
4540 | ||
4541 | ||
99efab12 | 4542 | SSize_t |
f62ce20a | 4543 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4544 | { |
dcda55fc | 4545 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4546 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4547 | *(c->nl) = 0xd; |
4548 | c->nl = NULL; | |
4549 | } | |
4550 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4551 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4552 | else { |
4553 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4554 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4555 | SSize_t unread = 0; | |
4556 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4557 | PerlIO_flush(f); | |
4558 | if (!b->buf) | |
4559 | PerlIO_get_base(f); | |
4560 | if (b->buf) { | |
4561 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4562 | b->end = b->ptr = b->buf + b->bufsiz; | |
4563 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4564 | b->posn -= b->bufsiz; | |
4565 | } | |
4566 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4567 | const int ch = *--buf; |
14a5cf38 JH |
4568 | if (ch == '\n') { |
4569 | if (b->ptr - 2 >= b->buf) { | |
4570 | *--(b->ptr) = 0xa; | |
4571 | *--(b->ptr) = 0xd; | |
4572 | unread++; | |
4573 | count--; | |
4574 | } | |
4575 | else { | |
93c2c2ec IZ |
4576 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4577 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4578 | unread++; | |
4579 | count--; | |
14a5cf38 JH |
4580 | } |
4581 | } | |
4582 | else { | |
4583 | *--(b->ptr) = ch; | |
4584 | unread++; | |
4585 | count--; | |
4586 | } | |
4587 | } | |
4588 | } | |
4589 | return unread; | |
4590 | } | |
99efab12 NIS |
4591 | } |
4592 | ||
93c2c2ec | 4593 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4594 | SSize_t |
f62ce20a | 4595 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4596 | { |
dcda55fc | 4597 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4598 | if (!b->buf) |
4599 | PerlIO_get_base(f); | |
4600 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4601 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4602 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4603 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4604 | scan: |
4605 | while (nl < b->end && *nl != 0xd) | |
4606 | nl++; | |
4607 | if (nl < b->end && *nl == 0xd) { | |
4608 | test: | |
4609 | if (nl + 1 < b->end) { | |
4610 | if (nl[1] == 0xa) { | |
4611 | *nl = '\n'; | |
4612 | c->nl = nl; | |
4613 | } | |
4614 | else { | |
4615 | /* | |
71200d45 | 4616 | * Not CR,LF but just CR |
14a5cf38 JH |
4617 | */ |
4618 | nl++; | |
4619 | goto scan; | |
4620 | } | |
4621 | } | |
4622 | else { | |
4623 | /* | |
71200d45 | 4624 | * Blast - found CR as last char in buffer |
14a5cf38 | 4625 | */ |
e87a358a | 4626 | |
14a5cf38 JH |
4627 | if (b->ptr < nl) { |
4628 | /* | |
4629 | * They may not care, defer work as long as | |
71200d45 | 4630 | * possible |
14a5cf38 | 4631 | */ |
a0d1d361 | 4632 | c->nl = nl; |
14a5cf38 JH |
4633 | return (nl - b->ptr); |
4634 | } | |
4635 | else { | |
4636 | int code; | |
22569500 | 4637 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4638 | * flush() is concerned */ |
22569500 | 4639 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4640 | /* Note as we have moved buf up flush's |
4641 | posn += ptr-buf | |
4642 | will naturally make posn point at CR | |
4643 | */ | |
22569500 NIS |
4644 | b->bufsiz--; /* Buffer is thus smaller */ |
4645 | code = PerlIO_fill(f); /* Fetch some more */ | |
4646 | b->bufsiz++; /* Restore size for next time */ | |
4647 | b->buf--; /* Point at space */ | |
4648 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4649 | * off */ |
22569500 | 4650 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4651 | if (code == 0) |
22569500 | 4652 | goto test; /* fill() call worked */ |
14a5cf38 | 4653 | /* |
71200d45 | 4654 | * CR at EOF - just fall through |
14a5cf38 | 4655 | */ |
a0d1d361 | 4656 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4657 | } |
4658 | } | |
4659 | } | |
4660 | } | |
4661 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4662 | } | |
4663 | return 0; | |
99efab12 NIS |
4664 | } |
4665 | ||
4666 | void | |
f62ce20a | 4667 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4668 | { |
dcda55fc AL |
4669 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4670 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4671 | if (!b->buf) |
4672 | PerlIO_get_base(f); | |
4673 | if (!ptr) { | |
a0d1d361 | 4674 | if (c->nl) { |
14a5cf38 | 4675 | ptr = c->nl + 1; |
22569500 | 4676 | if (ptr == b->end && *c->nl == 0xd) { |
486ec47a | 4677 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4678 | ptr--; |
4679 | } | |
4680 | } | |
14a5cf38 JH |
4681 | else { |
4682 | ptr = b->end; | |
14a5cf38 JH |
4683 | } |
4684 | ptr -= cnt; | |
4685 | } | |
4686 | else { | |
6f207bd3 | 4687 | NOOP; |
3b4bd3fd | 4688 | #if 0 |
14a5cf38 | 4689 | /* |
71200d45 | 4690 | * Test code - delete when it works ... |
14a5cf38 | 4691 | */ |
3b4bd3fd | 4692 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4693 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4694 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
486ec47a | 4695 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4696 | chk--; |
22569500 | 4697 | } |
14a5cf38 JH |
4698 | chk -= cnt; |
4699 | ||
a0d1d361 | 4700 | if (ptr != chk ) { |
99ef548b | 4701 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4702 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4703 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4704 | } |
99ef548b | 4705 | #endif |
14a5cf38 JH |
4706 | } |
4707 | if (c->nl) { | |
4708 | if (ptr > c->nl) { | |
4709 | /* | |
71200d45 | 4710 | * They have taken what we lied about |
14a5cf38 JH |
4711 | */ |
4712 | *(c->nl) = 0xd; | |
4713 | c->nl = NULL; | |
4714 | ptr++; | |
4715 | } | |
4716 | } | |
4717 | b->ptr = ptr; | |
4718 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4719 | } |
4720 | ||
4721 | SSize_t | |
f62ce20a | 4722 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4723 | { |
14a5cf38 | 4724 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4725 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4726 | else { |
dcda55fc | 4727 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4728 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4729 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4730 | if (!b->buf) |
4731 | PerlIO_get_base(f); | |
4732 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4733 | return 0; | |
4734 | while (buf < ebuf) { | |
dcda55fc | 4735 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4736 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4737 | while (buf < ebuf && b->ptr < eptr) { | |
4738 | if (*buf == '\n') { | |
4739 | if ((b->ptr + 2) > eptr) { | |
4740 | /* | |
71200d45 | 4741 | * Not room for both |
14a5cf38 JH |
4742 | */ |
4743 | PerlIO_flush(f); | |
4744 | break; | |
4745 | } | |
4746 | else { | |
22569500 NIS |
4747 | *(b->ptr)++ = 0xd; /* CR */ |
4748 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4749 | buf++; |
4750 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4751 | PerlIO_flush(f); | |
4752 | break; | |
4753 | } | |
4754 | } | |
4755 | } | |
4756 | else { | |
dcda55fc | 4757 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4758 | } |
4759 | if (b->ptr >= eptr) { | |
4760 | PerlIO_flush(f); | |
4761 | break; | |
4762 | } | |
4763 | } | |
4764 | } | |
4765 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4766 | PerlIO_flush(f); | |
4767 | return (buf - (STDCHAR *) vbuf); | |
4768 | } | |
99efab12 NIS |
4769 | } |
4770 | ||
4771 | IV | |
f62ce20a | 4772 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4773 | { |
dcda55fc | 4774 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4775 | if (c->nl) { |
4776 | *(c->nl) = 0xd; | |
4777 | c->nl = NULL; | |
4778 | } | |
f62ce20a | 4779 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4780 | } |
4781 | ||
86e05cf2 NIS |
4782 | IV |
4783 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4784 | { | |
4785 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4786 | /* In text mode - flush any pending stuff and flip it */ | |
4787 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4788 | #ifndef PERLIO_USING_CRLF | |
4789 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4790 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4791 | #endif |
4792 | } | |
4793 | return 0; | |
4794 | } | |
4795 | ||
27da23d5 | 4796 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4797 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4798 | "crlf", |
4799 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4800 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4801 | PerlIOCrlf_pushed, |
44798d05 | 4802 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4803 | PerlIOBuf_open, |
86e05cf2 | 4804 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4805 | NULL, |
4806 | PerlIOBase_fileno, | |
71200d45 | 4807 | PerlIOBuf_dup, |
de009b76 | 4808 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4809 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4810 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4811 | PerlIOBuf_seek, |
4812 | PerlIOBuf_tell, | |
4813 | PerlIOBuf_close, | |
4814 | PerlIOCrlf_flush, | |
4815 | PerlIOBuf_fill, | |
4816 | PerlIOBase_eof, | |
4817 | PerlIOBase_error, | |
4818 | PerlIOBase_clearerr, | |
4819 | PerlIOBase_setlinebuf, | |
4820 | PerlIOBuf_get_base, | |
4821 | PerlIOBuf_bufsiz, | |
4822 | PerlIOBuf_get_ptr, | |
4823 | PerlIOCrlf_get_cnt, | |
4824 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4825 | }; |
4826 | ||
9e353e3b | 4827 | PerlIO * |
e87a358a | 4828 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4829 | { |
97aff369 | 4830 | dVAR; |
a1ea730d | 4831 | if (!PL_perlio) { |
14a5cf38 JH |
4832 | PerlIO_stdstreams(aTHX); |
4833 | } | |
303f2dc3 | 4834 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4835 | } |
4836 | ||
9e353e3b | 4837 | PerlIO * |
e87a358a | 4838 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4839 | { |
97aff369 | 4840 | dVAR; |
a1ea730d | 4841 | if (!PL_perlio) { |
14a5cf38 JH |
4842 | PerlIO_stdstreams(aTHX); |
4843 | } | |
303f2dc3 | 4844 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4845 | } |
4846 | ||
9e353e3b | 4847 | PerlIO * |
e87a358a | 4848 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4849 | { |
97aff369 | 4850 | dVAR; |
a1ea730d | 4851 | if (!PL_perlio) { |
14a5cf38 JH |
4852 | PerlIO_stdstreams(aTHX); |
4853 | } | |
303f2dc3 | 4854 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4855 | } |
4856 | ||
4857 | /*--------------------------------------------------------------------------------------*/ | |
4858 | ||
9e353e3b NIS |
4859 | char * |
4860 | PerlIO_getname(PerlIO *f, char *buf) | |
4861 | { | |
14a5cf38 | 4862 | dTHX; |
a15cef0c | 4863 | #ifdef VMS |
73d840c0 | 4864 | char *name = NULL; |
7659f319 | 4865 | bool exported = FALSE; |
14a5cf38 | 4866 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4867 | if (!stdio) { |
4868 | stdio = PerlIO_exportFILE(f,0); | |
4869 | exported = TRUE; | |
4870 | } | |
4871 | if (stdio) { | |
14a5cf38 | 4872 | name = fgetname(stdio, buf); |
7659f319 CB |
4873 | if (exported) PerlIO_releaseFILE(f,stdio); |
4874 | } | |
73d840c0 | 4875 | return name; |
a15cef0c | 4876 | #else |
8772537c AL |
4877 | PERL_UNUSED_ARG(f); |
4878 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 4879 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 4880 | return NULL; |
a15cef0c | 4881 | #endif |
9e353e3b NIS |
4882 | } |
4883 | ||
4884 | ||
4885 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4886 | /* |
4887 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4888 | * terms of above |
14a5cf38 | 4889 | */ |
9e353e3b | 4890 | |
e87a358a NIS |
4891 | #undef PerlIO_fdopen |
4892 | PerlIO * | |
4893 | PerlIO_fdopen(int fd, const char *mode) | |
4894 | { | |
4895 | dTHX; | |
bd61b366 | 4896 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4897 | } |
4898 | ||
4899 | #undef PerlIO_open | |
4900 | PerlIO * | |
4901 | PerlIO_open(const char *path, const char *mode) | |
4902 | { | |
4903 | dTHX; | |
42d9b98d | 4904 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4905 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4906 | } |
4907 | ||
4908 | #undef Perlio_reopen | |
4909 | PerlIO * | |
4910 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4911 | { | |
4912 | dTHX; | |
42d9b98d | 4913 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4914 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4915 | } |
4916 | ||
9e353e3b | 4917 | #undef PerlIO_getc |
6f9d8c32 | 4918 | int |
9e353e3b | 4919 | PerlIO_getc(PerlIO *f) |
760ac839 | 4920 | { |
e87a358a | 4921 | dTHX; |
14a5cf38 | 4922 | STDCHAR buf[1]; |
de009b76 | 4923 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4924 | return (unsigned char) buf[0]; |
4925 | } | |
4926 | return EOF; | |
313ca112 NIS |
4927 | } |
4928 | ||
4929 | #undef PerlIO_ungetc | |
4930 | int | |
4931 | PerlIO_ungetc(PerlIO *f, int ch) | |
4932 | { | |
e87a358a | 4933 | dTHX; |
14a5cf38 JH |
4934 | if (ch != EOF) { |
4935 | STDCHAR buf = ch; | |
4936 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4937 | return ch; | |
4938 | } | |
4939 | return EOF; | |
760ac839 LW |
4940 | } |
4941 | ||
9e353e3b NIS |
4942 | #undef PerlIO_putc |
4943 | int | |
4944 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4945 | { |
e87a358a | 4946 | dTHX; |
14a5cf38 JH |
4947 | STDCHAR buf = ch; |
4948 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4949 | } |
4950 | ||
9e353e3b | 4951 | #undef PerlIO_puts |
760ac839 | 4952 | int |
9e353e3b | 4953 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4954 | { |
e87a358a | 4955 | dTHX; |
dcda55fc | 4956 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4957 | } |
4958 | ||
4959 | #undef PerlIO_rewind | |
4960 | void | |
c78749f2 | 4961 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4962 | { |
e87a358a | 4963 | dTHX; |
14a5cf38 JH |
4964 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4965 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4966 | } |
4967 | ||
4968 | #undef PerlIO_vprintf | |
4969 | int | |
4970 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4971 | { | |
14a5cf38 | 4972 | dTHX; |
53ce71d3 | 4973 | SV * sv; |
b83604b4 | 4974 | const char *s; |
14a5cf38 JH |
4975 | STRLEN len; |
4976 | SSize_t wrote; | |
2cc61e15 | 4977 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4978 | va_list apc; |
4979 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4980 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 4981 | #else |
53ce71d3 | 4982 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4983 | #endif |
b83604b4 | 4984 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4985 | wrote = PerlIO_write(f, s, len); |
4986 | SvREFCNT_dec(sv); | |
4987 | return wrote; | |
760ac839 LW |
4988 | } |
4989 | ||
4990 | #undef PerlIO_printf | |
6f9d8c32 | 4991 | int |
14a5cf38 | 4992 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4993 | { |
14a5cf38 JH |
4994 | va_list ap; |
4995 | int result; | |
4996 | va_start(ap, fmt); | |
4997 | result = PerlIO_vprintf(f, fmt, ap); | |
4998 | va_end(ap); | |
4999 | return result; | |
760ac839 LW |
5000 | } |
5001 | ||
5002 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5003 | int |
14a5cf38 | 5004 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5005 | { |
e87a358a | 5006 | dTHX; |
14a5cf38 JH |
5007 | va_list ap; |
5008 | int result; | |
5009 | va_start(ap, fmt); | |
5010 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5011 | va_end(ap); | |
5012 | return result; | |
760ac839 LW |
5013 | } |
5014 | ||
5015 | #undef PerlIO_tmpfile | |
5016 | PerlIO * | |
c78749f2 | 5017 | PerlIO_tmpfile(void) |
760ac839 | 5018 | { |
2941a2e1 JH |
5019 | dTHX; |
5020 | PerlIO *f = NULL; | |
2941a2e1 | 5021 | #ifdef WIN32 |
de009b76 | 5022 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5023 | if (fd >= 0) |
5024 | f = PerlIO_fdopen(fd, "w+b"); | |
5025 | #else /* WIN32 */ | |
460c8493 | 5026 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5027 | int fd = -1; |
5028 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
5029 | const char * const tmpdir = PL_tainting ? NULL : PerlEnv_getenv("TMPDIR"); | |
525f6fe9 | 5030 | SV * sv = NULL; |
2941a2e1 JH |
5031 | /* |
5032 | * I have no idea how portable mkstemp() is ... NI-S | |
5033 | */ | |
7299ca58 | 5034 | if (tmpdir && *tmpdir) { |
0b99e986 | 5035 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5036 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5037 | sv_catpv(sv, tempname + 4); |
5038 | fd = mkstemp(SvPVX(sv)); | |
5039 | } | |
5040 | if (fd < 0) { | |
7299ca58 | 5041 | sv = NULL; |
0b99e986 RGS |
5042 | /* else we try /tmp */ |
5043 | fd = mkstemp(tempname); | |
5044 | } | |
2941a2e1 JH |
5045 | if (fd >= 0) { |
5046 | f = PerlIO_fdopen(fd, "w+"); | |
5047 | if (f) | |
5048 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5049 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5050 | } |
ef8d46e8 | 5051 | SvREFCNT_dec(sv); |
2941a2e1 | 5052 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5053 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5054 | |
085e731f CB |
5055 | if (stdio) |
5056 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5057 | ||
2941a2e1 JH |
5058 | # endif /* else HAS_MKSTEMP */ |
5059 | #endif /* else WIN32 */ | |
5060 | return f; | |
760ac839 LW |
5061 | } |
5062 | ||
6f9d8c32 NIS |
5063 | #undef HAS_FSETPOS |
5064 | #undef HAS_FGETPOS | |
5065 | ||
22569500 NIS |
5066 | #endif /* USE_SFIO */ |
5067 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5068 | |
9e353e3b | 5069 | /*======================================================================================*/ |
14a5cf38 | 5070 | /* |
71200d45 NIS |
5071 | * Now some functions in terms of above which may be needed even if we are |
5072 | * not in true PerlIO mode | |
9e353e3b | 5073 | */ |
188f0c84 YO |
5074 | const char * |
5075 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5076 | { | |
5077 | dVAR; | |
8b850bd5 NC |
5078 | const char *direction = NULL; |
5079 | SV *layers; | |
188f0c84 YO |
5080 | /* |
5081 | * Need to supply default layer info from open.pm | |
5082 | */ | |
8b850bd5 NC |
5083 | |
5084 | if (!PL_curcop) | |
5085 | return NULL; | |
5086 | ||
5087 | if (mode && mode[0] != 'r') { | |
5088 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5089 | direction = "open>"; | |
5090 | } else { | |
5091 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5092 | direction = "open<"; | |
188f0c84 | 5093 | } |
8b850bd5 NC |
5094 | if (!direction) |
5095 | return NULL; | |
5096 | ||
20439bc7 | 5097 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5098 | |
5099 | assert(layers); | |
5100 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5101 | } |
5102 | ||
9e353e3b | 5103 | |
760ac839 LW |
5104 | #ifndef HAS_FSETPOS |
5105 | #undef PerlIO_setpos | |
5106 | int | |
766a733e | 5107 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5108 | { |
14a5cf38 JH |
5109 | dTHX; |
5110 | if (SvOK(pos)) { | |
5111 | STRLEN len; | |
c4420975 | 5112 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5113 | if (f && len == sizeof(Off_t)) |
5114 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5115 | } | |
93189314 | 5116 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5117 | return -1; |
760ac839 | 5118 | } |
c411622e | 5119 | #else |
c411622e | 5120 | #undef PerlIO_setpos |
5121 | int | |
766a733e | 5122 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5123 | { |
14a5cf38 JH |
5124 | dTHX; |
5125 | if (SvOK(pos)) { | |
5126 | STRLEN len; | |
c4420975 | 5127 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5128 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5129 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5130 | return fsetpos64(f, fpos); |
d9b3e12d | 5131 | #else |
14a5cf38 | 5132 | return fsetpos(f, fpos); |
d9b3e12d | 5133 | #endif |
14a5cf38 | 5134 | } |
766a733e | 5135 | } |
93189314 | 5136 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5137 | return -1; |
c411622e | 5138 | } |
5139 | #endif | |
760ac839 LW |
5140 | |
5141 | #ifndef HAS_FGETPOS | |
5142 | #undef PerlIO_getpos | |
5143 | int | |
766a733e | 5144 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5145 | { |
14a5cf38 JH |
5146 | dTHX; |
5147 | Off_t posn = PerlIO_tell(f); | |
5148 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5149 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5150 | } |
c411622e | 5151 | #else |
c411622e | 5152 | #undef PerlIO_getpos |
5153 | int | |
766a733e | 5154 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5155 | { |
14a5cf38 JH |
5156 | dTHX; |
5157 | Fpos_t fpos; | |
5158 | int code; | |
2d4389e4 | 5159 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5160 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5161 | #else |
14a5cf38 | 5162 | code = fgetpos(f, &fpos); |
d9b3e12d | 5163 | #endif |
14a5cf38 JH |
5164 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5165 | return code; | |
c411622e | 5166 | } |
5167 | #endif | |
760ac839 LW |
5168 | |
5169 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5170 | ||
5171 | int | |
c78749f2 | 5172 | vprintf(char *pat, char *args) |
662a7e3f CS |
5173 | { |
5174 | _doprnt(pat, args, stdout); | |
22569500 | 5175 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5176 | * value */ |
662a7e3f CS |
5177 | } |
5178 | ||
5179 | int | |
c78749f2 | 5180 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5181 | { |
5182 | _doprnt(pat, args, fd); | |
22569500 | 5183 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5184 | * value */ |
760ac839 LW |
5185 | } |
5186 | ||
5187 | #endif | |
5188 | ||
5189 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5190 | int |
8ac85365 | 5191 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5192 | { |
8ff9a42b | 5193 | dTHX; |
d9fad198 | 5194 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5195 | PERL_UNUSED_CONTEXT; |
5196 | ||
1208b3dd JH |
5197 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5198 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5199 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5200 | } |
1208b3dd | 5201 | #endif |
14a5cf38 | 5202 | return val; |
760ac839 LW |
5203 | } |
5204 | #endif | |
5205 | ||
5206 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5207 | int |
14a5cf38 | 5208 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5209 | { |
14a5cf38 JH |
5210 | va_list ap; |
5211 | int result; | |
5212 | va_start(ap, fmt); | |
5213 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5214 | va_end(ap); | |
5215 | return result; | |
760ac839 LW |
5216 | } |
5217 | #endif | |
9cfa90c0 NC |
5218 | |
5219 | /* | |
5220 | * Local variables: | |
5221 | * c-indentation-style: bsd | |
5222 | * c-basic-offset: 4 | |
14d04a33 | 5223 | * indent-tabs-mode: nil |
9cfa90c0 NC |
5224 | * End: |
5225 | * | |
14d04a33 | 5226 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5227 | */ |