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 | |
71ab4674 | 144 | dTHX; |
58c0efa5 | 145 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
146 | #ifdef NETWARE |
147 | if (PerlLIO_setmode(fp, mode) != -1) { | |
148 | #else | |
149 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
150 | #endif | |
71ab4674 SP |
151 | return 1; |
152 | } | |
153 | else | |
154 | return 0; | |
71ab4674 SP |
155 | #else |
156 | # if defined(USEMYBINMODE) | |
157 | dTHX; | |
58c0efa5 RGS |
158 | # if defined(__CYGWIN__) |
159 | PERL_UNUSED_ARG(iotype); | |
160 | # endif | |
71ab4674 SP |
161 | if (my_binmode(fp, iotype, mode) != FALSE) |
162 | return 1; | |
163 | else | |
164 | return 0; | |
165 | # else | |
166 | PERL_UNUSED_ARG(fp); | |
167 | PERL_UNUSED_ARG(iotype); | |
168 | PERL_UNUSED_ARG(mode); | |
169 | return 1; | |
170 | # endif | |
171 | #endif | |
172 | } | |
173 | #endif /* sfio */ | |
174 | ||
06c7082d | 175 | #ifndef O_ACCMODE |
22569500 | 176 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
177 | #endif |
178 | ||
179 | int | |
180 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
181 | { | |
de009b76 | 182 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
183 | int ix = 0; |
184 | int ptype; | |
185 | switch (result) { | |
186 | case O_RDONLY: | |
187 | ptype = IoTYPE_RDONLY; | |
188 | break; | |
189 | case O_WRONLY: | |
190 | ptype = IoTYPE_WRONLY; | |
191 | break; | |
192 | case O_RDWR: | |
193 | default: | |
194 | ptype = IoTYPE_RDWR; | |
195 | break; | |
196 | } | |
197 | if (writing) | |
198 | *writing = (result != O_RDONLY); | |
199 | ||
200 | if (result == O_RDONLY) { | |
201 | mode[ix++] = 'r'; | |
202 | } | |
203 | #ifdef O_APPEND | |
204 | else if (rawmode & O_APPEND) { | |
205 | mode[ix++] = 'a'; | |
206 | if (result != O_WRONLY) | |
207 | mode[ix++] = '+'; | |
208 | } | |
209 | #endif | |
210 | else { | |
211 | if (result == O_WRONLY) | |
212 | mode[ix++] = 'w'; | |
213 | else { | |
214 | mode[ix++] = 'r'; | |
215 | mode[ix++] = '+'; | |
216 | } | |
217 | } | |
218 | if (rawmode & O_BINARY) | |
219 | mode[ix++] = 'b'; | |
220 | mode[ix] = '\0'; | |
221 | return ptype; | |
222 | } | |
223 | ||
eb73beca NIS |
224 | #ifndef PERLIO_LAYERS |
225 | int | |
226 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
227 | { | |
6874a2de NIS |
228 | if (!names || !*names |
229 | || strEQ(names, ":crlf") | |
230 | || strEQ(names, ":raw") | |
231 | || strEQ(names, ":bytes") | |
232 | ) { | |
14a5cf38 JH |
233 | return 0; |
234 | } | |
235 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
236 | /* | |
71200d45 | 237 | * NOTREACHED |
14a5cf38 JH |
238 | */ |
239 | return -1; | |
eb73beca NIS |
240 | } |
241 | ||
13621cfb NIS |
242 | void |
243 | PerlIO_destruct(pTHX) | |
244 | { | |
245 | } | |
246 | ||
f5b9d040 NIS |
247 | int |
248 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
249 | { | |
92bff44d | 250 | #ifdef USE_SFIO |
8772537c AL |
251 | PERL_UNUSED_ARG(iotype); |
252 | PERL_UNUSED_ARG(mode); | |
253 | PERL_UNUSED_ARG(names); | |
14a5cf38 | 254 | return 1; |
92bff44d | 255 | #else |
14a5cf38 | 256 | return perlsio_binmode(fp, iotype, mode); |
92bff44d | 257 | #endif |
f5b9d040 | 258 | } |
60382766 | 259 | |
e0fa5af2 | 260 | PerlIO * |
ecdeb87c | 261 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 262 | { |
a0fd4948 | 263 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
264 | return NULL; |
265 | #else | |
266 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 267 | return PerlSIO_fdupopen(f); |
0553478e | 268 | #else |
30753f56 NIS |
269 | #ifdef WIN32 |
270 | return win32_fdupopen(f); | |
271 | #else | |
e0fa5af2 | 272 | if (f) { |
504618e9 | 273 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 274 | if (fd >= 0) { |
06c7082d | 275 | char mode[8]; |
a5936e02 | 276 | #ifdef DJGPP |
dcda55fc AL |
277 | const int omode = djgpp_get_stream_mode(f); |
278 | #else | |
279 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 280 | #endif |
06c7082d | 281 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 282 | /* the r+ is a hack */ |
06c7082d | 283 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
284 | } |
285 | return NULL; | |
286 | } | |
287 | else { | |
93189314 | 288 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 289 | } |
7114a2d2 | 290 | #endif |
e0fa5af2 | 291 | return NULL; |
0553478e | 292 | #endif |
30753f56 | 293 | #endif |
e0fa5af2 NIS |
294 | } |
295 | ||
296 | ||
14a5cf38 | 297 | /* |
71200d45 | 298 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 299 | */ |
ee518936 NIS |
300 | |
301 | PerlIO * | |
14a5cf38 JH |
302 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
303 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
304 | { | |
7cf31beb NIS |
305 | if (narg) { |
306 | if (narg > 1) { | |
3b8752bb | 307 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 308 | } |
14a5cf38 JH |
309 | if (*args == &PL_sv_undef) |
310 | return PerlIO_tmpfile(); | |
311 | else { | |
e62f0680 | 312 | const char *name = SvPV_nolen_const(*args); |
3b6c1aba | 313 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
314 | fd = PerlLIO_open3(name, imode, perm); |
315 | if (fd >= 0) | |
de009b76 | 316 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
317 | } |
318 | else if (old) { | |
319 | return PerlIO_reopen(name, mode, old); | |
320 | } | |
321 | else { | |
322 | return PerlIO_open(name, mode); | |
323 | } | |
324 | } | |
325 | } | |
326 | else { | |
327 | return PerlIO_fdopen(fd, (char *) mode); | |
328 | } | |
329 | return NULL; | |
ee518936 NIS |
330 | } |
331 | ||
0c4f7ff0 NIS |
332 | XS(XS_PerlIO__Layer__find) |
333 | { | |
14a5cf38 JH |
334 | dXSARGS; |
335 | if (items < 2) | |
336 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
337 | else { | |
dcda55fc | 338 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
339 | ST(0) = (strEQ(name, "crlf") |
340 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
341 | XSRETURN(1); | |
342 | } | |
0c4f7ff0 NIS |
343 | } |
344 | ||
345 | ||
346 | void | |
347 | Perl_boot_core_PerlIO(pTHX) | |
348 | { | |
14a5cf38 | 349 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
350 | } |
351 | ||
ac27b0f5 NIS |
352 | #endif |
353 | ||
32e30700 | 354 | |
6f9d8c32 | 355 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
356 | |
357 | void | |
e8632036 | 358 | PerlIO_init(pTHX) |
760ac839 | 359 | { |
96a5add6 | 360 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
361 | /* |
362 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 363 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 364 | * that may be required by loadable extensions e.g. for |
71200d45 | 365 | * FileHandle::tmpfile |
14a5cf38 | 366 | */ |
760ac839 LW |
367 | } |
368 | ||
33dcbb9a | 369 | #undef PerlIO_tmpfile |
370 | PerlIO * | |
8ac85365 | 371 | PerlIO_tmpfile(void) |
33dcbb9a | 372 | { |
14a5cf38 | 373 | return tmpfile(); |
33dcbb9a | 374 | } |
375 | ||
22569500 | 376 | #else /* PERLIO_IS_STDIO */ |
760ac839 LW |
377 | |
378 | #ifdef USE_SFIO | |
379 | ||
380 | #undef HAS_FSETPOS | |
381 | #undef HAS_FGETPOS | |
382 | ||
14a5cf38 JH |
383 | /* |
384 | * This section is just to make sure these functions get pulled in from | |
71200d45 | 385 | * libsfio.a |
14a5cf38 | 386 | */ |
760ac839 LW |
387 | |
388 | #undef PerlIO_tmpfile | |
389 | PerlIO * | |
c78749f2 | 390 | PerlIO_tmpfile(void) |
760ac839 | 391 | { |
14a5cf38 | 392 | return sftmp(0); |
760ac839 LW |
393 | } |
394 | ||
395 | void | |
e8632036 | 396 | PerlIO_init(pTHX) |
760ac839 | 397 | { |
96a5add6 | 398 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
399 | /* |
400 | * Force this file to be included in perl binary. Which allows this | |
401 | * file to force inclusion of other functions that may be required by | |
71200d45 | 402 | * loadable extensions e.g. for FileHandle::tmpfile |
14a5cf38 | 403 | */ |
760ac839 | 404 | |
14a5cf38 | 405 | /* |
71200d45 | 406 | * Hack sfio does its own 'autoflush' on stdout in common cases. Flush |
14a5cf38 | 407 | * results in a lot of lseek()s to regular files and lot of small |
71200d45 | 408 | * writes to pipes. |
14a5cf38 JH |
409 | */ |
410 | sfset(sfstdout, SF_SHARE, 0); | |
760ac839 LW |
411 | } |
412 | ||
b9d6bf13 | 413 | /* This is not the reverse of PerlIO_exportFILE(), PerlIO_releaseFILE() is. */ |
92bff44d | 414 | PerlIO * |
4b069b44 | 415 | PerlIO_importFILE(FILE *stdio, const char *mode) |
92bff44d | 416 | { |
de009b76 | 417 | const int fd = fileno(stdio); |
4b069b44 | 418 | if (!mode || !*mode) { |
81428673 | 419 | mode = "r+"; |
4b069b44 NIS |
420 | } |
421 | return PerlIO_fdopen(fd, mode); | |
92bff44d NIS |
422 | } |
423 | ||
424 | FILE * | |
425 | PerlIO_findFILE(PerlIO *pio) | |
426 | { | |
de009b76 AL |
427 | const int fd = PerlIO_fileno(pio); |
428 | FILE * const f = fdopen(fd, "r+"); | |
14a5cf38 JH |
429 | PerlIO_flush(pio); |
430 | if (!f && errno == EINVAL) | |
431 | f = fdopen(fd, "w"); | |
432 | if (!f && errno == EINVAL) | |
433 | f = fdopen(fd, "r"); | |
434 | return f; | |
92bff44d NIS |
435 | } |
436 | ||
437 | ||
22569500 | 438 | #else /* USE_SFIO */ |
6f9d8c32 | 439 | /*======================================================================================*/ |
14a5cf38 | 440 | /* |
71200d45 | 441 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 442 | */ |
760ac839 | 443 | |
76ced9ad NIS |
444 | #include "perliol.h" |
445 | ||
6f9d8c32 | 446 | void |
14a5cf38 JH |
447 | PerlIO_debug(const char *fmt, ...) |
448 | { | |
14a5cf38 JH |
449 | va_list ap; |
450 | dSYS; | |
451 | va_start(ap, fmt); | |
582588d2 | 452 | if (!PL_perlio_debug_fd) { |
284167a5 | 453 | if (!TAINTING_get && |
985213f2 AB |
454 | PerlProc_getuid() == PerlProc_geteuid() && |
455 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
456 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
457 | if (s && *s) | |
458 | PL_perlio_debug_fd | |
459 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
460 | else | |
461 | PL_perlio_debug_fd = -1; | |
462 | } else { | |
463 | /* tainting or set*id, so ignore the environment, and ensure we | |
464 | skip these tests next time through. */ | |
27da23d5 | 465 | PL_perlio_debug_fd = -1; |
582588d2 | 466 | } |
14a5cf38 | 467 | } |
27da23d5 | 468 | if (PL_perlio_debug_fd > 0) { |
70ace5da | 469 | #ifdef USE_ITHREADS |
dcda55fc | 470 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
471 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
472 | char buffer[1024]; | |
1208b3dd JH |
473 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
474 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
475 | PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); | |
70ace5da | 476 | #else |
dcda55fc AL |
477 | const char *s = CopFILE(PL_curcop); |
478 | STRLEN len; | |
550e2ce0 NC |
479 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
480 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
481 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
482 | ||
b83604b4 | 483 | s = SvPV_const(sv, len); |
27da23d5 | 484 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 485 | SvREFCNT_dec(sv); |
70ace5da | 486 | #endif |
14a5cf38 JH |
487 | } |
488 | va_end(ap); | |
6f9d8c32 NIS |
489 | } |
490 | ||
9e353e3b NIS |
491 | /*--------------------------------------------------------------------------------------*/ |
492 | ||
14a5cf38 | 493 | /* |
71200d45 | 494 | * Inner level routines |
14a5cf38 | 495 | */ |
9e353e3b | 496 | |
16865ff7 DM |
497 | /* check that the head field of each layer points back to the head */ |
498 | ||
499 | #ifdef DEBUGGING | |
500 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
501 | static void | |
502 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
503 | { | |
504 | PerlIOl *head, *p; | |
505 | int seen = 0; | |
506 | if (!PerlIOValid(f)) | |
507 | return; | |
508 | p = head = PerlIOBase(f)->head; | |
509 | assert(p); | |
510 | do { | |
511 | assert(p->head == head); | |
512 | if (p == (PerlIOl*)f) | |
513 | seen = 1; | |
514 | p = p->next; | |
515 | } while (p); | |
516 | assert(seen); | |
517 | } | |
518 | #else | |
519 | # define VERIFY_HEAD(f) | |
520 | #endif | |
521 | ||
522 | ||
14a5cf38 | 523 | /* |
71200d45 | 524 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 525 | */ |
05d1247b | 526 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 527 | |
8995e67d DM |
528 | static void |
529 | PerlIO_init_table(pTHX) | |
530 | { | |
531 | if (PL_perlio) | |
532 | return; | |
533 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
534 | } | |
535 | ||
536 | ||
537 | ||
760ac839 | 538 | PerlIO * |
5f1a76d0 | 539 | PerlIO_allocate(pTHX) |
6f9d8c32 | 540 | { |
97aff369 | 541 | dVAR; |
14a5cf38 | 542 | /* |
71200d45 | 543 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 544 | */ |
303f2dc3 DM |
545 | PerlIOl **last; |
546 | PerlIOl *f; | |
a1ea730d | 547 | last = &PL_perlio; |
14a5cf38 JH |
548 | while ((f = *last)) { |
549 | int i; | |
303f2dc3 | 550 | last = (PerlIOl **) (f); |
14a5cf38 | 551 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 552 | if (!((++f)->next)) { |
abf9167d | 553 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 554 | f->tab = NULL; |
16865ff7 | 555 | f->head = f; |
303f2dc3 | 556 | return (PerlIO *)f; |
14a5cf38 JH |
557 | } |
558 | } | |
559 | } | |
303f2dc3 | 560 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
561 | if (!f) { |
562 | return NULL; | |
563 | } | |
303f2dc3 | 564 | *last = (PerlIOl*) f++; |
abf9167d | 565 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 566 | f->tab = NULL; |
16865ff7 | 567 | f->head = f; |
303f2dc3 | 568 | return (PerlIO*) f; |
05d1247b NIS |
569 | } |
570 | ||
a1ea730d NIS |
571 | #undef PerlIO_fdupopen |
572 | PerlIO * | |
ecdeb87c | 573 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 574 | { |
04892f78 | 575 | if (PerlIOValid(f)) { |
de009b76 | 576 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 577 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
578 | if (tab && tab->Dup) |
579 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
580 | else { |
581 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
582 | } | |
a1ea730d | 583 | } |
210e727c JH |
584 | else |
585 | SETERRNO(EBADF, SS_IVCHAN); | |
586 | ||
587 | return NULL; | |
a1ea730d NIS |
588 | } |
589 | ||
590 | void | |
303f2dc3 | 591 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 592 | { |
303f2dc3 | 593 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
594 | if (table) { |
595 | int i; | |
303f2dc3 | 596 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 597 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
598 | PerlIOl * const f = table + i; |
599 | if (f->next) { | |
600 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
601 | } |
602 | } | |
3a1ee7e8 | 603 | Safefree(table); |
14a5cf38 | 604 | *tablep = NULL; |
05d1247b | 605 | } |
05d1247b NIS |
606 | } |
607 | ||
fcf2db38 NIS |
608 | |
609 | PerlIO_list_t * | |
3a1ee7e8 | 610 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 611 | { |
14a5cf38 | 612 | PerlIO_list_t *list; |
96a5add6 | 613 | PERL_UNUSED_CONTEXT; |
a02a5408 | 614 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
615 | list->refcnt = 1; |
616 | return list; | |
fcf2db38 NIS |
617 | } |
618 | ||
619 | void | |
3a1ee7e8 | 620 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 621 | { |
14a5cf38 JH |
622 | if (list) { |
623 | if (--list->refcnt == 0) { | |
624 | if (list->array) { | |
14a5cf38 | 625 | IV i; |
ef8d46e8 VP |
626 | for (i = 0; i < list->cur; i++) |
627 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
628 | Safefree(list->array); |
629 | } | |
630 | Safefree(list); | |
631 | } | |
632 | } | |
fcf2db38 NIS |
633 | } |
634 | ||
635 | void | |
3a1ee7e8 | 636 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 637 | { |
97aff369 | 638 | dVAR; |
334e202e | 639 | PerlIO_pair_t *p; |
b37c2d43 AL |
640 | PERL_UNUSED_CONTEXT; |
641 | ||
14a5cf38 JH |
642 | if (list->cur >= list->len) { |
643 | list->len += 8; | |
644 | if (list->array) | |
645 | Renew(list->array, list->len, PerlIO_pair_t); | |
646 | else | |
a02a5408 | 647 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
648 | } |
649 | p = &(list->array[list->cur++]); | |
650 | p->funcs = funcs; | |
651 | if ((p->arg = arg)) { | |
f84c484e | 652 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 653 | } |
fcf2db38 NIS |
654 | } |
655 | ||
3a1ee7e8 NIS |
656 | PerlIO_list_t * |
657 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
658 | { | |
b37c2d43 | 659 | PerlIO_list_t *list = NULL; |
694c95cf JH |
660 | if (proto) { |
661 | int i; | |
662 | list = PerlIO_list_alloc(aTHX); | |
663 | for (i=0; i < proto->cur; i++) { | |
a951d81d BL |
664 | SV *arg = proto->array[i].arg; |
665 | #ifdef sv_dup | |
666 | if (arg && param) | |
667 | arg = sv_dup(arg, param); | |
668 | #else | |
669 | PERL_UNUSED_ARG(param); | |
670 | #endif | |
694c95cf JH |
671 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
672 | } | |
3a1ee7e8 NIS |
673 | } |
674 | return list; | |
675 | } | |
4a4a6116 | 676 | |
05d1247b | 677 | void |
3a1ee7e8 | 678 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 679 | { |
3aaf42a7 | 680 | #ifdef USE_ITHREADS |
303f2dc3 DM |
681 | PerlIOl **table = &proto->Iperlio; |
682 | PerlIOl *f; | |
3a1ee7e8 NIS |
683 | PL_perlio = NULL; |
684 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
685 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 686 | PerlIO_init_table(aTHX); |
a25429c6 | 687 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
688 | while ((f = *table)) { |
689 | int i; | |
303f2dc3 | 690 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 691 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
692 | if (f->next) { |
693 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
694 | } |
695 | f++; | |
696 | } | |
697 | } | |
1b6737cc | 698 | #else |
a25429c6 | 699 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
700 | PERL_UNUSED_ARG(proto); |
701 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 702 | #endif |
9a6404c5 DM |
703 | } |
704 | ||
705 | void | |
13621cfb NIS |
706 | PerlIO_destruct(pTHX) |
707 | { | |
97aff369 | 708 | dVAR; |
303f2dc3 DM |
709 | PerlIOl **table = &PL_perlio; |
710 | PerlIOl *f; | |
694c95cf | 711 | #ifdef USE_ITHREADS |
a25429c6 | 712 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 713 | #endif |
14a5cf38 JH |
714 | while ((f = *table)) { |
715 | int i; | |
303f2dc3 | 716 | table = (PerlIOl **) (f++); |
14a5cf38 | 717 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 718 | PerlIO *x = &(f->next); |
dcda55fc | 719 | const PerlIOl *l; |
14a5cf38 | 720 | while ((l = *x)) { |
cc6623a8 | 721 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
722 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
723 | PerlIO_flush(x); | |
724 | PerlIO_pop(aTHX_ x); | |
725 | } | |
726 | else { | |
727 | x = PerlIONext(x); | |
728 | } | |
729 | } | |
730 | f++; | |
731 | } | |
732 | } | |
13621cfb NIS |
733 | } |
734 | ||
735 | void | |
a999f61b | 736 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 737 | { |
dcda55fc | 738 | const PerlIOl *l = *f; |
16865ff7 | 739 | VERIFY_HEAD(f); |
14a5cf38 | 740 | if (l) { |
cc6623a8 DM |
741 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
742 | l->tab ? l->tab->name : "(Null)"); | |
743 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
744 | /* |
745 | * If popped returns non-zero do not free its layer structure | |
746 | * it has either done so itself, or it is shared and still in | |
71200d45 | 747 | * use |
14a5cf38 | 748 | */ |
f62ce20a | 749 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
750 | return; |
751 | } | |
abf9167d DM |
752 | if (PerlIO_lockcnt(f)) { |
753 | /* we're in use; defer freeing the structure */ | |
754 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
755 | PerlIOBase(f)->tab = NULL; | |
756 | } | |
757 | else { | |
758 | *f = l->next; | |
759 | Safefree(l); | |
760 | } | |
761 | ||
a8c08ecd | 762 | } |
6f9d8c32 NIS |
763 | } |
764 | ||
39f7a870 JH |
765 | /* Return as an array the stack of layers on a filehandle. Note that |
766 | * the stack is returned top-first in the array, and there are three | |
767 | * times as many array elements as there are layers in the stack: the | |
768 | * first element of a layer triplet is the name, the second one is the | |
769 | * arguments, and the third one is the flags. */ | |
770 | ||
771 | AV * | |
772 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
773 | { | |
97aff369 | 774 | dVAR; |
dcda55fc | 775 | AV * const av = newAV(); |
39f7a870 | 776 | |
dcda55fc AL |
777 | if (PerlIOValid(f)) { |
778 | PerlIOl *l = PerlIOBase(f); | |
779 | ||
780 | while (l) { | |
92e45a3e NC |
781 | /* There is some collusion in the implementation of |
782 | XS_PerlIO_get_layers - it knows that name and flags are | |
783 | generated as fresh SVs here, and takes advantage of that to | |
784 | "copy" them by taking a reference. If it changes here, it needs | |
785 | to change there too. */ | |
dcda55fc AL |
786 | SV * const name = l->tab && l->tab->name ? |
787 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
788 | SV * const arg = l->tab && l->tab->Getarg ? | |
789 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
790 | av_push(av, name); | |
791 | av_push(av, arg); | |
792 | av_push(av, newSViv((IV)l->flags)); | |
793 | l = l->next; | |
794 | } | |
795 | } | |
39f7a870 | 796 | |
dcda55fc | 797 | return av; |
39f7a870 JH |
798 | } |
799 | ||
9e353e3b | 800 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 801 | /* |
71200d45 | 802 | * XS Interface for perl code |
14a5cf38 | 803 | */ |
9e353e3b | 804 | |
fcf2db38 | 805 | PerlIO_funcs * |
2edd7e44 | 806 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 807 | { |
27da23d5 | 808 | dVAR; |
14a5cf38 JH |
809 | IV i; |
810 | if ((SSize_t) len <= 0) | |
811 | len = strlen(name); | |
3a1ee7e8 | 812 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 813 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 814 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 815 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
816 | return f; |
817 | } | |
818 | } | |
3a1ee7e8 NIS |
819 | if (load && PL_subname && PL_def_layerlist |
820 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
821 | if (PL_in_load_module) { |
822 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
823 | return NULL; | |
824 | } else { | |
396482e1 | 825 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 826 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 827 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 828 | ENTER; |
4fa7c2bf | 829 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 830 | if (cv) { |
9cfa90c0 | 831 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 832 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 833 | } |
4fa7c2bf | 834 | PL_in_load_module = TRUE; |
d7a09b41 SR |
835 | /* |
836 | * The two SVs are magically freed by load_module | |
837 | */ | |
a0714e2c | 838 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
839 | LEAVE; |
840 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
841 | } | |
14a5cf38 JH |
842 | } |
843 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
844 | return NULL; | |
f3862f8b NIS |
845 | } |
846 | ||
2a1bc955 | 847 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
848 | |
849 | static int | |
850 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
851 | { | |
14a5cf38 | 852 | if (SvROK(sv)) { |
159b6efe | 853 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
854 | PerlIO * const ifp = IoIFP(io); |
855 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
856 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
857 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
858 | } |
859 | return 0; | |
b13b2135 NIS |
860 | } |
861 | ||
862 | static int | |
863 | perlio_mg_get(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_ "get %" 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_clear(pTHX_ SV *sv, MAGIC *mg) | |
877 | { | |
be2597df | 878 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 879 | return 0; |
b13b2135 NIS |
880 | } |
881 | ||
882 | static int | |
883 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
884 | { | |
be2597df | 885 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 886 | return 0; |
b13b2135 NIS |
887 | } |
888 | ||
889 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
890 | perlio_mg_get, |
891 | perlio_mg_set, | |
22569500 | 892 | NULL, /* len */ |
14a5cf38 JH |
893 | perlio_mg_clear, |
894 | perlio_mg_free | |
b13b2135 NIS |
895 | }; |
896 | ||
897 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
898 | { | |
14a5cf38 | 899 | dXSARGS; |
dcda55fc AL |
900 | SV * const sv = SvRV(ST(1)); |
901 | AV * const av = newAV(); | |
14a5cf38 JH |
902 | MAGIC *mg; |
903 | int count = 0; | |
904 | int i; | |
ad64d0ec | 905 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
906 | SvRMAGICAL_off(sv); |
907 | mg = mg_find(sv, PERL_MAGIC_ext); | |
908 | mg->mg_virtual = &perlio_vtab; | |
909 | mg_magical(sv); | |
be2597df | 910 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
911 | for (i = 2; i < items; i++) { |
912 | STRLEN len; | |
dcda55fc AL |
913 | const char * const name = SvPV_const(ST(i), len); |
914 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 915 | if (layer) { |
b37c2d43 | 916 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
917 | } |
918 | else { | |
919 | ST(count) = ST(i); | |
920 | count++; | |
921 | } | |
922 | } | |
923 | SvREFCNT_dec(av); | |
924 | XSRETURN(count); | |
925 | } | |
926 | ||
22569500 | 927 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 928 | |
e3f3bf95 NIS |
929 | SV * |
930 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 931 | { |
da51bb9b | 932 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 933 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 934 | return sv; |
e3f3bf95 NIS |
935 | } |
936 | ||
5ca1d77f | 937 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 938 | { |
486ec47a | 939 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
940 | during loading of layers. |
941 | */ | |
97aff369 | 942 | dVAR; |
c9bca74a | 943 | dXSARGS; |
58c0efa5 | 944 | PERL_UNUSED_ARG(cv); |
c9bca74a | 945 | if (items) |
e62f0680 | 946 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
947 | XSRETURN(0); |
948 | } | |
949 | ||
5ca1d77f | 950 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 951 | { |
97aff369 | 952 | dVAR; |
14a5cf38 | 953 | dXSARGS; |
58c0efa5 | 954 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
955 | if (items < 2) |
956 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
957 | else { | |
de009b76 | 958 | STRLEN len; |
46c461b5 | 959 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 960 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 961 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
962 | ST(0) = |
963 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
964 | &PL_sv_undef; | |
965 | XSRETURN(1); | |
966 | } | |
0c4f7ff0 NIS |
967 | } |
968 | ||
e3f3bf95 NIS |
969 | void |
970 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
971 | { | |
97aff369 | 972 | dVAR; |
3a1ee7e8 NIS |
973 | if (!PL_known_layers) |
974 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 975 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 976 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
977 | } |
978 | ||
1141d9f8 | 979 | int |
fcf2db38 | 980 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 981 | { |
97aff369 | 982 | dVAR; |
14a5cf38 JH |
983 | if (names) { |
984 | const char *s = names; | |
985 | while (*s) { | |
986 | while (isSPACE(*s) || *s == ':') | |
987 | s++; | |
988 | if (*s) { | |
989 | STRLEN llen = 0; | |
990 | const char *e = s; | |
bd61b366 | 991 | const char *as = NULL; |
14a5cf38 JH |
992 | STRLEN alen = 0; |
993 | if (!isIDFIRST(*s)) { | |
994 | /* | |
995 | * Message is consistent with how attribute lists are | |
996 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 997 | * seen as an invalid separator character. |
14a5cf38 | 998 | */ |
de009b76 | 999 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
1000 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1001 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
1002 | q, *s, q, s); | |
93189314 | 1003 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1004 | return -1; |
1005 | } | |
1006 | do { | |
1007 | e++; | |
0eb30aeb | 1008 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
1009 | llen = e - s; |
1010 | if (*e == '(') { | |
1011 | int nesting = 1; | |
1012 | as = ++e; | |
1013 | while (nesting) { | |
1014 | switch (*e++) { | |
1015 | case ')': | |
1016 | if (--nesting == 0) | |
1017 | alen = (e - 1) - as; | |
1018 | break; | |
1019 | case '(': | |
1020 | ++nesting; | |
1021 | break; | |
1022 | case '\\': | |
1023 | /* | |
1024 | * It's a nul terminated string, not allowed | |
1025 | * to \ the terminating null. Anything other | |
71200d45 | 1026 | * character is passed over. |
14a5cf38 JH |
1027 | */ |
1028 | if (*e++) { | |
1029 | break; | |
1030 | } | |
1031 | /* | |
71200d45 | 1032 | * Drop through |
14a5cf38 JH |
1033 | */ |
1034 | case '\0': | |
1035 | e--; | |
a2a5de95 NC |
1036 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1037 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
1038 | (int) (e - s), s); | |
14a5cf38 JH |
1039 | return -1; |
1040 | default: | |
1041 | /* | |
71200d45 | 1042 | * boring. |
14a5cf38 JH |
1043 | */ |
1044 | break; | |
1045 | } | |
1046 | } | |
1047 | } | |
1048 | if (e > s) { | |
46c461b5 | 1049 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1050 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1051 | if (layer) { | |
a951d81d BL |
1052 | SV *arg = NULL; |
1053 | if (as) | |
1054 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1055 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 1056 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 1057 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1058 | } |
1059 | else { | |
a2a5de95 NC |
1060 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
1061 | (int) llen, s); | |
14a5cf38 JH |
1062 | return -1; |
1063 | } | |
1064 | } | |
1065 | s = e; | |
1066 | } | |
1067 | } | |
1068 | } | |
1069 | return 0; | |
1141d9f8 NIS |
1070 | } |
1071 | ||
dfebf958 | 1072 | void |
fcf2db38 | 1073 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1074 | { |
97aff369 | 1075 | dVAR; |
27da23d5 | 1076 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1077 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1078 | tab = &PerlIO_crlf; |
846be114 | 1079 | #else |
6ce75a77 | 1080 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1081 | tab = &PerlIO_stdio; |
846be114 | 1082 | #endif |
14a5cf38 | 1083 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1084 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1085 | &PL_sv_undef); |
dfebf958 NIS |
1086 | } |
1087 | ||
e3f3bf95 | 1088 | SV * |
14a5cf38 | 1089 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1090 | { |
14a5cf38 | 1091 | return av->array[n].arg; |
e3f3bf95 NIS |
1092 | } |
1093 | ||
f3862f8b | 1094 | PerlIO_funcs * |
14a5cf38 | 1095 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1096 | { |
14a5cf38 JH |
1097 | if (n >= 0 && n < av->cur) { |
1098 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1099 | av->array[n].funcs->name); | |
1100 | return av->array[n].funcs; | |
1101 | } | |
1102 | if (!def) | |
1103 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1104 | return def; | |
e3f3bf95 NIS |
1105 | } |
1106 | ||
4ec2216f NIS |
1107 | IV |
1108 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1109 | { | |
8772537c AL |
1110 | PERL_UNUSED_ARG(mode); |
1111 | PERL_UNUSED_ARG(arg); | |
1112 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1113 | if (PerlIOValid(f)) { |
1114 | PerlIO_flush(f); | |
1115 | PerlIO_pop(aTHX_ f); | |
1116 | return 0; | |
1117 | } | |
1118 | return -1; | |
1119 | } | |
1120 | ||
27da23d5 | 1121 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1122 | sizeof(PerlIO_funcs), |
1123 | "pop", | |
1124 | 0, | |
1125 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1126 | PerlIOPop_pushed, | |
1127 | NULL, | |
c0888ace | 1128 | PerlIOBase_open, |
4ec2216f NIS |
1129 | NULL, |
1130 | NULL, | |
1131 | NULL, | |
1132 | NULL, | |
1133 | NULL, | |
1134 | NULL, | |
1135 | NULL, | |
1136 | NULL, | |
de009b76 AL |
1137 | NULL, |
1138 | NULL, | |
4ec2216f NIS |
1139 | NULL, /* flush */ |
1140 | NULL, /* fill */ | |
1141 | NULL, | |
1142 | NULL, | |
1143 | NULL, | |
1144 | NULL, | |
1145 | NULL, /* get_base */ | |
1146 | NULL, /* get_bufsiz */ | |
1147 | NULL, /* get_ptr */ | |
1148 | NULL, /* get_cnt */ | |
1149 | NULL, /* set_ptrcnt */ | |
1150 | }; | |
1151 | ||
fcf2db38 | 1152 | PerlIO_list_t * |
e3f3bf95 NIS |
1153 | PerlIO_default_layers(pTHX) |
1154 | { | |
97aff369 | 1155 | dVAR; |
3a1ee7e8 | 1156 | if (!PL_def_layerlist) { |
284167a5 | 1157 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1158 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1159 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1160 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1161 | #if defined(WIN32) |
27da23d5 | 1162 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1163 | #if 0 |
14a5cf38 | 1164 | osLayer = &PerlIO_win32; |
0c4128ad | 1165 | #endif |
2f8118af | 1166 | #endif |
27da23d5 JH |
1167 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1168 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1169 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1170 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1171 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1172 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1173 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1174 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1175 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1176 | &PL_sv_undef); | |
1177 | if (s) { | |
3a1ee7e8 | 1178 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1179 | } |
1180 | else { | |
3a1ee7e8 | 1181 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1182 | } |
1141d9f8 | 1183 | } |
3a1ee7e8 NIS |
1184 | if (PL_def_layerlist->cur < 2) { |
1185 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1186 | } |
3a1ee7e8 | 1187 | return PL_def_layerlist; |
e3f3bf95 NIS |
1188 | } |
1189 | ||
0c4f7ff0 NIS |
1190 | void |
1191 | Perl_boot_core_PerlIO(pTHX) | |
1192 | { | |
1193 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1194 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1195 | __FILE__); | |
0c4f7ff0 | 1196 | #endif |
14a5cf38 | 1197 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1198 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1199 | } |
e3f3bf95 NIS |
1200 | |
1201 | PerlIO_funcs * | |
1202 | PerlIO_default_layer(pTHX_ I32 n) | |
1203 | { | |
97aff369 | 1204 | dVAR; |
46c461b5 | 1205 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1206 | if (n < 0) |
1207 | n += av->cur; | |
27da23d5 | 1208 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1209 | } |
1210 | ||
a999f61b NIS |
1211 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1212 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1213 | |
1214 | void | |
1141d9f8 | 1215 | PerlIO_stdstreams(pTHX) |
60382766 | 1216 | { |
97aff369 | 1217 | dVAR; |
a1ea730d | 1218 | if (!PL_perlio) { |
8995e67d | 1219 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1220 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1221 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1222 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1223 | } | |
60382766 NIS |
1224 | } |
1225 | ||
1226 | PerlIO * | |
27da23d5 | 1227 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1228 | { |
16865ff7 | 1229 | VERIFY_HEAD(f); |
2dc2558e | 1230 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1231 | Perl_croak( aTHX_ |
5cf96513 RB |
1232 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1233 | "PerlIO layer function table size", (UV)tab->fsize, | |
1234 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1235 | } |
1236 | if (tab->size) { | |
b464bac0 | 1237 | PerlIOl *l; |
2dc2558e | 1238 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1239 | Perl_croak( aTHX_ |
5cf96513 RB |
1240 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1241 | "PerlIO layer instance size", (UV)tab->size, | |
1242 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1243 | } |
1244 | /* Real layer with a data area */ | |
002e75cf JH |
1245 | if (f) { |
1246 | char *temp; | |
1247 | Newxz(temp, tab->size, char); | |
1248 | l = (PerlIOl*)temp; | |
1249 | if (l) { | |
1250 | l->next = *f; | |
1251 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1252 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1253 | *f = l; |
1254 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1255 | (void*)f, tab->name, | |
1256 | (mode) ? mode : "(Null)", (void*)arg); | |
1257 | if (*l->tab->Pushed && | |
1258 | (*l->tab->Pushed) | |
1259 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1260 | PerlIO_pop(aTHX_ f); | |
1261 | return NULL; | |
1262 | } | |
2dc2558e | 1263 | } |
002e75cf JH |
1264 | else |
1265 | return NULL; | |
2dc2558e NIS |
1266 | } |
1267 | } | |
1268 | else if (f) { | |
1269 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1270 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1271 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1272 | if (tab->Pushed && |
27da23d5 | 1273 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1274 | return NULL; |
14a5cf38 JH |
1275 | } |
1276 | } | |
1277 | return f; | |
60382766 NIS |
1278 | } |
1279 | ||
81fe74fb LT |
1280 | PerlIO * |
1281 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1282 | IV n, const char *mode, int fd, int imode, int perm, | |
1283 | PerlIO *old, int narg, SV **args) | |
1284 | { | |
1285 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1286 | if (tab && tab->Open) { | |
1287 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1288 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1289 | PerlIO_close(ret); |
1290 | return NULL; | |
1291 | } | |
1292 | return ret; | |
1293 | } | |
1294 | SETERRNO(EINVAL, LIB_INVARG); | |
1295 | return NULL; | |
1296 | } | |
1297 | ||
dfebf958 | 1298 | IV |
86e05cf2 NIS |
1299 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1300 | { | |
1301 | if (PerlIOValid(f)) { | |
1302 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1303 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1304 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1305 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1306 | } | |
1307 | else { | |
1308 | /* Not suitable - pop it */ | |
1309 | PerlIO_pop(aTHX_ f); | |
1310 | } | |
1311 | return 0; | |
1312 | } | |
1313 | return -1; | |
1314 | } | |
1315 | ||
1316 | IV | |
2dc2558e | 1317 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1318 | { |
8772537c AL |
1319 | PERL_UNUSED_ARG(mode); |
1320 | PERL_UNUSED_ARG(arg); | |
1321 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1322 | |
04892f78 | 1323 | if (PerlIOValid(f)) { |
86e05cf2 | 1324 | PerlIO *t; |
de009b76 | 1325 | const PerlIOl *l; |
14a5cf38 | 1326 | PerlIO_flush(f); |
86e05cf2 NIS |
1327 | /* |
1328 | * Strip all layers that are not suitable for a raw stream | |
1329 | */ | |
1330 | t = f; | |
1331 | while (t && (l = *t)) { | |
cc6623a8 | 1332 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1333 | /* Has a handler - normal case */ |
9d97e8b8 | 1334 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1335 | if (*t == l) { |
1336 | /* Layer still there - move down a layer */ | |
1337 | t = PerlIONext(t); | |
1338 | } | |
1339 | } | |
1340 | else { | |
1341 | return -1; | |
1342 | } | |
14a5cf38 JH |
1343 | } |
1344 | else { | |
86e05cf2 NIS |
1345 | /* No handler - pop it */ |
1346 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1347 | } |
1348 | } | |
86e05cf2 | 1349 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1350 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1351 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1352 | return 0; |
1353 | } | |
14a5cf38 JH |
1354 | } |
1355 | return -1; | |
dfebf958 NIS |
1356 | } |
1357 | ||
ac27b0f5 | 1358 | int |
14a5cf38 | 1359 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1360 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1361 | { |
14a5cf38 JH |
1362 | int code = 0; |
1363 | while (n < max) { | |
8772537c | 1364 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1365 | if (tab) { |
1366 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1367 | code = -1; | |
1368 | break; | |
1369 | } | |
1370 | } | |
1371 | n++; | |
1372 | } | |
1373 | return code; | |
e3f3bf95 NIS |
1374 | } |
1375 | ||
1376 | int | |
ac27b0f5 NIS |
1377 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1378 | { | |
14a5cf38 | 1379 | int code = 0; |
da0fccaa DG |
1380 | ENTER; |
1381 | save_scalar(PL_errgv); | |
53f1b6d2 | 1382 | if (f && names) { |
8772537c | 1383 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1384 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1385 | if (code == 0) { | |
d9dac8cd | 1386 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1387 | } |
3a1ee7e8 | 1388 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1389 | } |
da0fccaa | 1390 | LEAVE; |
14a5cf38 | 1391 | return code; |
ac27b0f5 NIS |
1392 | } |
1393 | ||
f3862f8b | 1394 | |
60382766 | 1395 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1396 | /* |
71200d45 | 1397 | * Given the abstraction above the public API functions |
14a5cf38 | 1398 | */ |
60382766 NIS |
1399 | |
1400 | int | |
f5b9d040 | 1401 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1402 | { |
68b5363f | 1403 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1404 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1405 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1406 | iotype, mode, (names) ? names : "(Null)"); |
1407 | ||
03c0554d NIS |
1408 | if (names) { |
1409 | /* Do not flush etc. if (e.g.) switching encodings. | |
1410 | if a pushed layer knows it needs to flush lower layers | |
1411 | (for example :unix which is never going to call them) | |
1412 | it can do the flush when it is pushed. | |
1413 | */ | |
1414 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1415 | } | |
1416 | else { | |
86e05cf2 | 1417 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1418 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1419 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1420 | O_BINARY so we can look for it in mode. | |
1421 | */ | |
1422 | if (!(mode & O_BINARY)) { | |
1423 | /* Text mode */ | |
86e05cf2 NIS |
1424 | /* FIXME?: Looking down the layer stack seems wrong, |
1425 | but is a way of reaching past (say) an encoding layer | |
1426 | to flip CRLF-ness of the layer(s) below | |
1427 | */ | |
03c0554d NIS |
1428 | while (*f) { |
1429 | /* Perhaps we should turn on bottom-most aware layer | |
1430 | e.g. Ilya's idea that UNIX TTY could serve | |
1431 | */ | |
cc6623a8 DM |
1432 | if (PerlIOBase(f)->tab && |
1433 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1434 | { | |
03c0554d NIS |
1435 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1436 | /* Not in text mode - flush any pending stuff and flip it */ | |
1437 | PerlIO_flush(f); | |
1438 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1439 | } | |
1440 | /* Only need to turn it on in one layer so we are done */ | |
1441 | return TRUE; | |
ed53a2bb | 1442 | } |
03c0554d | 1443 | f = PerlIONext(f); |
14a5cf38 | 1444 | } |
03c0554d NIS |
1445 | /* Not finding a CRLF aware layer presumably means we are binary |
1446 | which is not what was requested - so we failed | |
1447 | We _could_ push :crlf layer but so could caller | |
1448 | */ | |
1449 | return FALSE; | |
14a5cf38 | 1450 | } |
6ce75a77 | 1451 | #endif |
86e05cf2 NIS |
1452 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1453 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1454 | */ |
a0714e2c | 1455 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1456 | } |
f5b9d040 NIS |
1457 | } |
1458 | ||
f5b9d040 | 1459 | int |
e87a358a | 1460 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1461 | { |
37725cdc | 1462 | if (PerlIOValid(f)) { |
46c461b5 | 1463 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1464 | if (tab && tab->Close) |
1465 | return (*tab->Close)(aTHX_ f); | |
1466 | else | |
1467 | return PerlIOBase_close(aTHX_ f); | |
1468 | } | |
14a5cf38 | 1469 | else { |
93189314 | 1470 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1471 | return -1; |
1472 | } | |
76ced9ad NIS |
1473 | } |
1474 | ||
b931b1d9 | 1475 | int |
e87a358a | 1476 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1477 | { |
de009b76 | 1478 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1479 | while (PerlIOValid(f)) { |
1480 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1481 | if (PerlIO_lockcnt(f)) |
1482 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1483 | f = PerlIONext(f); | |
f6c77cf1 | 1484 | } |
14a5cf38 | 1485 | return code; |
b931b1d9 NIS |
1486 | } |
1487 | ||
b931b1d9 | 1488 | int |
e87a358a | 1489 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1490 | { |
97aff369 | 1491 | dVAR; |
b32dd47e | 1492 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1493 | } |
1494 | ||
1141d9f8 | 1495 | |
fcf2db38 | 1496 | static PerlIO_funcs * |
2edd7e44 NIS |
1497 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1498 | { | |
97aff369 | 1499 | dVAR; |
14a5cf38 | 1500 | /* |
71200d45 | 1501 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1502 | */ |
526fd1b4 | 1503 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1504 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1505 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1506 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1507 | if (!f) |
dcbac5bb | 1508 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1509 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1510 | return f; |
1511 | } | |
14a5cf38 JH |
1512 | |
1513 | /* | |
71200d45 | 1514 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1515 | */ |
1516 | switch (SvTYPE(sv)) { | |
1517 | case SVt_PVAV: | |
6a245ed1 | 1518 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1519 | case SVt_PVHV: |
6a245ed1 | 1520 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1521 | case SVt_PVCV: |
6a245ed1 | 1522 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1523 | case SVt_PVGV: |
6a245ed1 | 1524 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1525 | default: |
1526 | return NULL; | |
14a5cf38 | 1527 | } |
2edd7e44 NIS |
1528 | } |
1529 | ||
fcf2db38 | 1530 | PerlIO_list_t * |
14a5cf38 JH |
1531 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1532 | const char *mode, int narg, SV **args) | |
1533 | { | |
97aff369 | 1534 | dVAR; |
14a5cf38 JH |
1535 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1536 | int incdef = 1; | |
a1ea730d | 1537 | if (!PL_perlio) |
14a5cf38 JH |
1538 | PerlIO_stdstreams(aTHX); |
1539 | if (narg) { | |
dcda55fc | 1540 | SV * const arg = *args; |
14a5cf38 | 1541 | /* |
71200d45 NIS |
1542 | * If it is a reference but not an object see if we have a handler |
1543 | * for it | |
14a5cf38 JH |
1544 | */ |
1545 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1546 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1547 | if (handler) { |
3a1ee7e8 NIS |
1548 | def = PerlIO_list_alloc(aTHX); |
1549 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1550 | incdef = 0; |
1551 | } | |
1552 | /* | |
e934609f | 1553 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1554 | * something sensible else we will just stringfy and open |
71200d45 | 1555 | * resulting string. |
14a5cf38 JH |
1556 | */ |
1557 | } | |
1558 | } | |
9fe371da | 1559 | if (!layers || !*layers) |
11bcd5da | 1560 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1561 | if (layers && *layers) { |
1562 | PerlIO_list_t *av; | |
1563 | if (incdef) { | |
a951d81d | 1564 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1565 | } |
1566 | else { | |
1567 | av = def; | |
1568 | } | |
0cff2cf3 NIS |
1569 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1570 | return av; | |
1571 | } | |
1572 | else { | |
1573 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1574 | return NULL; |
0cff2cf3 | 1575 | } |
14a5cf38 JH |
1576 | } |
1577 | else { | |
1578 | if (incdef) | |
1579 | def->refcnt++; | |
1580 | return def; | |
1581 | } | |
ee518936 NIS |
1582 | } |
1583 | ||
1584 | PerlIO * | |
14a5cf38 JH |
1585 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1586 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1587 | { | |
97aff369 | 1588 | dVAR; |
14a5cf38 JH |
1589 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1590 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1591 | if (!layers || !*layers) |
11bcd5da | 1592 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1593 | if (layers && *layers) |
1594 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1595 | } | |
1596 | } | |
1597 | else { | |
de009b76 | 1598 | PerlIO_list_t *layera; |
14a5cf38 JH |
1599 | IV n; |
1600 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1601 | if (PerlIOValid(f)) { |
14a5cf38 | 1602 | /* |
71200d45 NIS |
1603 | * This is "reopen" - it is not tested as perl does not use it |
1604 | * yet | |
14a5cf38 JH |
1605 | */ |
1606 | PerlIOl *l = *f; | |
3a1ee7e8 | 1607 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1608 | while (l) { |
a951d81d | 1609 | SV *arg = NULL; |
cc6623a8 | 1610 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1611 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1612 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1613 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1614 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1615 | l = *PerlIONext(&l); |
1616 | } | |
1617 | } | |
1618 | else { | |
1619 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1620 | if (!layera) { |
1621 | return NULL; | |
1622 | } | |
14a5cf38 JH |
1623 | } |
1624 | /* | |
71200d45 | 1625 | * Start at "top" of layer stack |
14a5cf38 JH |
1626 | */ |
1627 | n = layera->cur - 1; | |
1628 | while (n >= 0) { | |
46c461b5 | 1629 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1630 | if (t && t->Open) { |
1631 | tab = t; | |
1632 | break; | |
1633 | } | |
1634 | n--; | |
1635 | } | |
1636 | if (tab) { | |
1637 | /* | |
71200d45 | 1638 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1639 | */ |
7cf31beb | 1640 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1641 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1642 | } |
14a5cf38 | 1643 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1644 | tab->name, layers ? layers : "(Null)", mode, fd, |
1645 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1646 | if (tab->Open) |
1647 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1648 | f, narg, args); | |
1649 | else { | |
1650 | SETERRNO(EINVAL, LIB_INVARG); | |
1651 | f = NULL; | |
1652 | } | |
14a5cf38 JH |
1653 | if (f) { |
1654 | if (n + 1 < layera->cur) { | |
1655 | /* | |
1656 | * More layers above the one that we used to open - | |
71200d45 | 1657 | * apply them now |
14a5cf38 | 1658 | */ |
d9dac8cd NIS |
1659 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1660 | /* If pushing layers fails close the file */ | |
1661 | PerlIO_close(f); | |
14a5cf38 JH |
1662 | f = NULL; |
1663 | } | |
1664 | } | |
1665 | } | |
1666 | } | |
3a1ee7e8 | 1667 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1668 | } |
1669 | return f; | |
ee518936 | 1670 | } |
b931b1d9 NIS |
1671 | |
1672 | ||
9e353e3b | 1673 | SSize_t |
e87a358a | 1674 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1675 | { |
7918f24d NC |
1676 | PERL_ARGS_ASSERT_PERLIO_READ; |
1677 | ||
b32dd47e | 1678 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1679 | } |
1680 | ||
313ca112 | 1681 | SSize_t |
e87a358a | 1682 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1683 | { |
7918f24d NC |
1684 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1685 | ||
b32dd47e | 1686 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1687 | } |
1688 | ||
9e353e3b | 1689 | SSize_t |
e87a358a | 1690 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1691 | { |
7918f24d NC |
1692 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1693 | ||
b32dd47e | 1694 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1695 | } |
1696 | ||
6f9d8c32 | 1697 | int |
e87a358a | 1698 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1699 | { |
b32dd47e | 1700 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1701 | } |
1702 | ||
9e353e3b | 1703 | Off_t |
e87a358a | 1704 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1705 | { |
b32dd47e | 1706 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1707 | } |
1708 | ||
6f9d8c32 | 1709 | int |
e87a358a | 1710 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1711 | { |
97aff369 | 1712 | dVAR; |
14a5cf38 JH |
1713 | if (f) { |
1714 | if (*f) { | |
de009b76 | 1715 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1716 | |
1717 | if (tab && tab->Flush) | |
f62ce20a | 1718 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1719 | else |
1720 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1721 | } |
1722 | else { | |
fe5a182c | 1723 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1724 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1725 | return -1; |
1726 | } | |
1727 | } | |
1728 | else { | |
1729 | /* | |
1730 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1731 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1732 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1733 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1734 | * decisions? --jhi |
14a5cf38 | 1735 | */ |
303f2dc3 DM |
1736 | PerlIOl **table = &PL_perlio; |
1737 | PerlIOl *ff; | |
14a5cf38 | 1738 | int code = 0; |
303f2dc3 | 1739 | while ((ff = *table)) { |
14a5cf38 | 1740 | int i; |
303f2dc3 | 1741 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1742 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1743 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1744 | code = -1; |
303f2dc3 | 1745 | ff++; |
14a5cf38 JH |
1746 | } |
1747 | } | |
1748 | return code; | |
1749 | } | |
760ac839 LW |
1750 | } |
1751 | ||
a9c883f6 | 1752 | void |
f62ce20a | 1753 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1754 | { |
97aff369 | 1755 | dVAR; |
303f2dc3 DM |
1756 | PerlIOl **table = &PL_perlio; |
1757 | PerlIOl *f; | |
14a5cf38 JH |
1758 | while ((f = *table)) { |
1759 | int i; | |
303f2dc3 | 1760 | table = (PerlIOl **) (f++); |
14a5cf38 | 1761 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1762 | if (f->next |
1763 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1764 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1765 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1766 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1767 | f++; |
1768 | } | |
a9c883f6 | 1769 | } |
a9c883f6 NIS |
1770 | } |
1771 | ||
06da4f11 | 1772 | int |
e87a358a | 1773 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1774 | { |
b32dd47e | 1775 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1776 | } |
1777 | ||
f3862f8b NIS |
1778 | int |
1779 | PerlIO_isutf8(PerlIO *f) | |
1780 | { | |
1b7a0411 JH |
1781 | if (PerlIOValid(f)) |
1782 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1783 | else | |
1784 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1785 | |
1b7a0411 | 1786 | return -1; |
f3862f8b NIS |
1787 | } |
1788 | ||
6f9d8c32 | 1789 | int |
e87a358a | 1790 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1791 | { |
b32dd47e | 1792 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1793 | } |
1794 | ||
9e353e3b | 1795 | int |
e87a358a | 1796 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1797 | { |
b32dd47e | 1798 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1799 | } |
1800 | ||
9e353e3b | 1801 | void |
e87a358a | 1802 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1803 | { |
b32dd47e | 1804 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1805 | } |
1806 | ||
9e353e3b | 1807 | void |
e87a358a | 1808 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1809 | { |
b32dd47e | 1810 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1811 | } |
1812 | ||
9e353e3b NIS |
1813 | int |
1814 | PerlIO_has_base(PerlIO *f) | |
1815 | { | |
1b7a0411 | 1816 | if (PerlIOValid(f)) { |
46c461b5 | 1817 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1818 | |
1819 | if (tab) | |
1820 | return (tab->Get_base != NULL); | |
1b7a0411 | 1821 | } |
1b7a0411 JH |
1822 | |
1823 | return 0; | |
760ac839 LW |
1824 | } |
1825 | ||
9e353e3b NIS |
1826 | int |
1827 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1828 | { |
d7dfc388 SK |
1829 | if (PerlIOValid(f)) { |
1830 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1831 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1832 | |
d7dfc388 SK |
1833 | if (tab) |
1834 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1835 | } |
14a5cf38 | 1836 | } |
1b7a0411 | 1837 | |
14a5cf38 | 1838 | return 0; |
9e353e3b NIS |
1839 | } |
1840 | ||
9e353e3b NIS |
1841 | int |
1842 | PerlIO_has_cntptr(PerlIO *f) | |
1843 | { | |
04892f78 | 1844 | if (PerlIOValid(f)) { |
46c461b5 | 1845 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1846 | |
1847 | if (tab) | |
1848 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1849 | } |
1b7a0411 | 1850 | |
14a5cf38 | 1851 | return 0; |
9e353e3b NIS |
1852 | } |
1853 | ||
9e353e3b NIS |
1854 | int |
1855 | PerlIO_canset_cnt(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->Set_ptrcnt != NULL); | |
14a5cf38 | 1862 | } |
1b7a0411 | 1863 | |
14a5cf38 | 1864 | return 0; |
760ac839 LW |
1865 | } |
1866 | ||
888911fc | 1867 | STDCHAR * |
e87a358a | 1868 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1869 | { |
b32dd47e | 1870 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1871 | } |
1872 | ||
9e353e3b | 1873 | int |
e87a358a | 1874 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1875 | { |
b32dd47e | 1876 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1877 | } |
1878 | ||
9e353e3b | 1879 | STDCHAR * |
e87a358a | 1880 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1881 | { |
b32dd47e | 1882 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1883 | } |
1884 | ||
05d1247b | 1885 | int |
e87a358a | 1886 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1887 | { |
b32dd47e | 1888 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1889 | } |
1890 | ||
9e353e3b | 1891 | void |
e87a358a | 1892 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1893 | { |
b32dd47e | 1894 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1895 | } |
1896 | ||
9e353e3b | 1897 | void |
e87a358a | 1898 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1899 | { |
b32dd47e | 1900 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1901 | } |
1902 | ||
4ec2216f | 1903 | |
9e353e3b | 1904 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1905 | /* |
71200d45 | 1906 | * utf8 and raw dummy layers |
14a5cf38 | 1907 | */ |
dfebf958 | 1908 | |
26fb694e | 1909 | IV |
2dc2558e | 1910 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1911 | { |
96a5add6 | 1912 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1913 | PERL_UNUSED_ARG(mode); |
1914 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1915 | if (PerlIOValid(f)) { |
cc6623a8 | 1916 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1917 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1918 | else | |
1919 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1920 | return 0; | |
1921 | } | |
1922 | return -1; | |
26fb694e NIS |
1923 | } |
1924 | ||
27da23d5 | 1925 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1926 | sizeof(PerlIO_funcs), |
14a5cf38 | 1927 | "utf8", |
2dc2558e | 1928 | 0, |
a778d1f5 | 1929 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1930 | PerlIOUtf8_pushed, |
1931 | NULL, | |
c0888ace | 1932 | PerlIOBase_open, |
14a5cf38 JH |
1933 | NULL, |
1934 | NULL, | |
1935 | NULL, | |
1936 | NULL, | |
1937 | NULL, | |
1938 | NULL, | |
1939 | NULL, | |
1940 | NULL, | |
de009b76 AL |
1941 | NULL, |
1942 | NULL, | |
22569500 NIS |
1943 | NULL, /* flush */ |
1944 | NULL, /* fill */ | |
14a5cf38 JH |
1945 | NULL, |
1946 | NULL, | |
1947 | NULL, | |
1948 | NULL, | |
22569500 NIS |
1949 | NULL, /* get_base */ |
1950 | NULL, /* get_bufsiz */ | |
1951 | NULL, /* get_ptr */ | |
1952 | NULL, /* get_cnt */ | |
1953 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1954 | }; |
1955 | ||
27da23d5 | 1956 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1957 | sizeof(PerlIO_funcs), |
14a5cf38 | 1958 | "bytes", |
2dc2558e | 1959 | 0, |
a778d1f5 | 1960 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1961 | PerlIOUtf8_pushed, |
1962 | NULL, | |
c0888ace | 1963 | PerlIOBase_open, |
14a5cf38 JH |
1964 | NULL, |
1965 | NULL, | |
1966 | NULL, | |
1967 | NULL, | |
1968 | NULL, | |
1969 | NULL, | |
1970 | NULL, | |
1971 | NULL, | |
de009b76 AL |
1972 | NULL, |
1973 | NULL, | |
22569500 NIS |
1974 | NULL, /* flush */ |
1975 | NULL, /* fill */ | |
14a5cf38 JH |
1976 | NULL, |
1977 | NULL, | |
1978 | NULL, | |
1979 | NULL, | |
22569500 NIS |
1980 | NULL, /* get_base */ |
1981 | NULL, /* get_bufsiz */ | |
1982 | NULL, /* get_ptr */ | |
1983 | NULL, /* get_cnt */ | |
1984 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1985 | }; |
1986 | ||
27da23d5 | 1987 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1988 | sizeof(PerlIO_funcs), |
14a5cf38 | 1989 | "raw", |
2dc2558e | 1990 | 0, |
14a5cf38 JH |
1991 | PERLIO_K_DUMMY, |
1992 | PerlIORaw_pushed, | |
1993 | PerlIOBase_popped, | |
ecfd0649 | 1994 | PerlIOBase_open, |
14a5cf38 JH |
1995 | NULL, |
1996 | NULL, | |
1997 | NULL, | |
1998 | NULL, | |
1999 | NULL, | |
2000 | NULL, | |
2001 | NULL, | |
2002 | NULL, | |
de009b76 AL |
2003 | NULL, |
2004 | NULL, | |
22569500 NIS |
2005 | NULL, /* flush */ |
2006 | NULL, /* fill */ | |
14a5cf38 JH |
2007 | NULL, |
2008 | NULL, | |
2009 | NULL, | |
2010 | NULL, | |
22569500 NIS |
2011 | NULL, /* get_base */ |
2012 | NULL, /* get_bufsiz */ | |
2013 | NULL, /* get_ptr */ | |
2014 | NULL, /* get_cnt */ | |
2015 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
2016 | }; |
2017 | /*--------------------------------------------------------------------------------------*/ | |
2018 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2019 | /* |
71200d45 | 2020 | * "Methods" of the "base class" |
14a5cf38 | 2021 | */ |
9e353e3b NIS |
2022 | |
2023 | IV | |
f62ce20a | 2024 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2025 | { |
04892f78 | 2026 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
2027 | } |
2028 | ||
f5b9d040 | 2029 | char * |
81428673 | 2030 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
2031 | { |
2032 | char *s = buf; | |
81428673 | 2033 | if (PerlIOValid(f)) { |
de009b76 | 2034 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2035 | if (flags & PERLIO_F_APPEND) { |
2036 | *s++ = 'a'; | |
2037 | if (flags & PERLIO_F_CANREAD) { | |
2038 | *s++ = '+'; | |
2039 | } | |
14a5cf38 | 2040 | } |
81428673 NIS |
2041 | else if (flags & PERLIO_F_CANREAD) { |
2042 | *s++ = 'r'; | |
2043 | if (flags & PERLIO_F_CANWRITE) | |
2044 | *s++ = '+'; | |
2045 | } | |
2046 | else if (flags & PERLIO_F_CANWRITE) { | |
2047 | *s++ = 'w'; | |
2048 | if (flags & PERLIO_F_CANREAD) { | |
2049 | *s++ = '+'; | |
2050 | } | |
14a5cf38 | 2051 | } |
35990314 | 2052 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2053 | if (!(flags & PERLIO_F_CRLF)) |
2054 | *s++ = 'b'; | |
5f1a76d0 | 2055 | #endif |
81428673 | 2056 | } |
14a5cf38 JH |
2057 | *s = '\0'; |
2058 | return buf; | |
f5b9d040 NIS |
2059 | } |
2060 | ||
81428673 | 2061 | |
76ced9ad | 2062 | IV |
2dc2558e | 2063 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2064 | { |
de009b76 | 2065 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2066 | PERL_UNUSED_CONTEXT; |
8772537c | 2067 | PERL_UNUSED_ARG(arg); |
de009b76 | 2068 | |
14a5cf38 JH |
2069 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2070 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 2071 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
2072 | l->flags |= PERLIO_F_FASTGETS; |
2073 | if (mode) { | |
3b6c1aba | 2074 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2075 | mode++; |
2076 | switch (*mode++) { | |
2077 | case 'r': | |
2078 | l->flags |= PERLIO_F_CANREAD; | |
2079 | break; | |
2080 | case 'a': | |
2081 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2082 | break; | |
2083 | case 'w': | |
2084 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2085 | break; | |
2086 | default: | |
93189314 | 2087 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2088 | return -1; |
2089 | } | |
2090 | while (*mode) { | |
2091 | switch (*mode++) { | |
2092 | case '+': | |
2093 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2094 | break; | |
2095 | case 'b': | |
2096 | l->flags &= ~PERLIO_F_CRLF; | |
2097 | break; | |
2098 | case 't': | |
2099 | l->flags |= PERLIO_F_CRLF; | |
2100 | break; | |
2101 | default: | |
93189314 | 2102 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2103 | return -1; |
2104 | } | |
2105 | } | |
2106 | } | |
2107 | else { | |
2108 | if (l->next) { | |
2109 | l->flags |= l->next->flags & | |
2110 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2111 | PERLIO_F_APPEND); | |
2112 | } | |
2113 | } | |
5e2ab84b | 2114 | #if 0 |
14a5cf38 | 2115 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2116 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2117 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2118 | #endif |
14a5cf38 | 2119 | return 0; |
76ced9ad NIS |
2120 | } |
2121 | ||
2122 | IV | |
f62ce20a | 2123 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2124 | { |
96a5add6 | 2125 | PERL_UNUSED_CONTEXT; |
8772537c | 2126 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2127 | return 0; |
760ac839 LW |
2128 | } |
2129 | ||
9e353e3b | 2130 | SSize_t |
f62ce20a | 2131 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2132 | { |
14a5cf38 | 2133 | /* |
71200d45 | 2134 | * Save the position as current head considers it |
14a5cf38 | 2135 | */ |
de009b76 | 2136 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2137 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2138 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2139 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2140 | } |
2141 | ||
f6c77cf1 | 2142 | SSize_t |
f62ce20a | 2143 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2144 | { |
14a5cf38 JH |
2145 | STDCHAR *buf = (STDCHAR *) vbuf; |
2146 | if (f) { | |
263df5f1 JH |
2147 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2148 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2149 | SETERRNO(EBADF, SS_IVCHAN); | |
2150 | return 0; | |
2151 | } | |
14a5cf38 | 2152 | while (count > 0) { |
93c2c2ec IZ |
2153 | get_cnt: |
2154 | { | |
14a5cf38 JH |
2155 | SSize_t avail = PerlIO_get_cnt(f); |
2156 | SSize_t take = 0; | |
2157 | if (avail > 0) | |
bb7a0f54 | 2158 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2159 | if (take > 0) { |
2160 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2161 | Copy(ptr, buf, take, STDCHAR); | |
2162 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2163 | count -= take; | |
2164 | buf += take; | |
93c2c2ec IZ |
2165 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2166 | goto get_cnt; | |
14a5cf38 JH |
2167 | } |
2168 | if (count > 0 && avail <= 0) { | |
2169 | if (PerlIO_fill(f) != 0) | |
2170 | break; | |
2171 | } | |
93c2c2ec | 2172 | } |
14a5cf38 JH |
2173 | } |
2174 | return (buf - (STDCHAR *) vbuf); | |
2175 | } | |
f6c77cf1 | 2176 | return 0; |
f6c77cf1 NIS |
2177 | } |
2178 | ||
9e353e3b | 2179 | IV |
f62ce20a | 2180 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2181 | { |
96a5add6 | 2182 | PERL_UNUSED_CONTEXT; |
8772537c | 2183 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2184 | return 0; |
9e353e3b NIS |
2185 | } |
2186 | ||
2187 | IV | |
f62ce20a | 2188 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2189 | { |
96a5add6 | 2190 | PERL_UNUSED_CONTEXT; |
8772537c | 2191 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2192 | return -1; |
06da4f11 NIS |
2193 | } |
2194 | ||
2195 | IV | |
f62ce20a | 2196 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2197 | { |
37725cdc NIS |
2198 | IV code = -1; |
2199 | if (PerlIOValid(f)) { | |
2200 | PerlIO *n = PerlIONext(f); | |
2201 | code = PerlIO_flush(f); | |
2202 | PerlIOBase(f)->flags &= | |
2203 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2204 | while (PerlIOValid(n)) { | |
de009b76 | 2205 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2206 | if (tab && tab->Close) { |
2207 | if ((*tab->Close)(aTHX_ n) != 0) | |
2208 | code = -1; | |
2209 | break; | |
2210 | } | |
2211 | else { | |
2212 | PerlIOBase(n)->flags &= | |
2213 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2214 | } | |
2215 | n = PerlIONext(n); | |
2216 | } | |
2217 | } | |
2218 | else { | |
2219 | SETERRNO(EBADF, SS_IVCHAN); | |
2220 | } | |
14a5cf38 | 2221 | return code; |
9e353e3b NIS |
2222 | } |
2223 | ||
2224 | IV | |
f62ce20a | 2225 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2226 | { |
96a5add6 | 2227 | PERL_UNUSED_CONTEXT; |
04892f78 | 2228 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2229 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2230 | } | |
2231 | return 1; | |
9e353e3b NIS |
2232 | } |
2233 | ||
2234 | IV | |
f62ce20a | 2235 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2236 | { |
96a5add6 | 2237 | PERL_UNUSED_CONTEXT; |
04892f78 | 2238 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2239 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2240 | } | |
2241 | return 1; | |
9e353e3b NIS |
2242 | } |
2243 | ||
2244 | void | |
f62ce20a | 2245 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2246 | { |
04892f78 | 2247 | if (PerlIOValid(f)) { |
dcda55fc | 2248 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2249 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2250 | if (PerlIOValid(n)) |
14a5cf38 JH |
2251 | PerlIO_clearerr(n); |
2252 | } | |
9e353e3b NIS |
2253 | } |
2254 | ||
2255 | void | |
f62ce20a | 2256 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2257 | { |
96a5add6 | 2258 | PERL_UNUSED_CONTEXT; |
04892f78 | 2259 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2260 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2261 | } | |
9e353e3b NIS |
2262 | } |
2263 | ||
93a8090d NIS |
2264 | SV * |
2265 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2266 | { | |
2267 | if (!arg) | |
a0714e2c | 2268 | return NULL; |
93a8090d NIS |
2269 | #ifdef sv_dup |
2270 | if (param) { | |
a951d81d BL |
2271 | arg = sv_dup(arg, param); |
2272 | SvREFCNT_inc_simple_void_NN(arg); | |
2273 | return arg; | |
93a8090d NIS |
2274 | } |
2275 | else { | |
2276 | return newSVsv(arg); | |
2277 | } | |
2278 | #else | |
1b6737cc | 2279 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2280 | return newSVsv(arg); |
2281 | #endif | |
2282 | } | |
2283 | ||
2284 | PerlIO * | |
ecdeb87c | 2285 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2286 | { |
1b6737cc | 2287 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2288 | if (PerlIOValid(nexto)) { |
de009b76 | 2289 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2290 | if (tab && tab->Dup) |
2291 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2292 | else | |
2293 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2294 | } |
2295 | if (f) { | |
dcda55fc | 2296 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2297 | SV *arg = NULL; |
93a8090d | 2298 | char buf[8]; |
fe5a182c | 2299 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2300 | self ? self->name : "(Null)", |
2301 | (void*)f, (void*)o, (void*)param); | |
2302 | if (self && self->Getarg) | |
210e727c | 2303 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2304 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2305 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2306 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
ef8d46e8 | 2307 | SvREFCNT_dec(arg); |
93a8090d NIS |
2308 | } |
2309 | return f; | |
2310 | } | |
2311 | ||
27da23d5 | 2312 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2313 | |
8b84d7dd | 2314 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2315 | static void |
2316 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2317 | dVAR; |
22c96fc1 | 2318 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2319 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2320 | int *new_array; |
2321 | ||
2322 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2323 | old_max, new_fd, new_max); | |
2324 | ||
2325 | if (new_fd < old_max) { | |
2326 | return; | |
2327 | } | |
2328 | ||
f4ae5be6 NC |
2329 | assert (new_max > new_fd); |
2330 | ||
eae082a0 JH |
2331 | /* Use plain realloc() since we need this memory to be really |
2332 | * global and visible to all the interpreters and/or threads. */ | |
2333 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2334 | |
2335 | if (!new_array) { | |
8b84d7dd | 2336 | #ifdef USE_ITHREADS |
6cb8cb21 | 2337 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2338 | #endif |
4cbe3a7d | 2339 | croak_no_mem(); |
22c96fc1 NC |
2340 | } |
2341 | ||
2342 | PL_perlio_fd_refcnt_size = new_max; | |
2343 | PL_perlio_fd_refcnt = new_array; | |
2344 | ||
95b63a38 JH |
2345 | PerlIO_debug("Zeroing %p, %d\n", |
2346 | (void*)(new_array + old_max), | |
2347 | new_max - old_max); | |
22c96fc1 NC |
2348 | |
2349 | Zero(new_array + old_max, new_max - old_max, int); | |
2350 | } | |
2351 | ||
2352 | ||
93a8090d NIS |
2353 | void |
2354 | PerlIO_init(pTHX) | |
2355 | { | |
8b84d7dd | 2356 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2357 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2358 | } |
2359 | ||
168d5872 NIS |
2360 | void |
2361 | PerlIOUnix_refcnt_inc(int fd) | |
2362 | { | |
27da23d5 | 2363 | dTHX; |
22c96fc1 | 2364 | if (fd >= 0) { |
97aff369 | 2365 | dVAR; |
22c96fc1 | 2366 | |
8b84d7dd | 2367 | #ifdef USE_ITHREADS |
6cb8cb21 | 2368 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2369 | #endif |
22c96fc1 NC |
2370 | if (fd >= PL_perlio_fd_refcnt_size) |
2371 | S_more_refcounted_fds(aTHX_ fd); | |
2372 | ||
27da23d5 | 2373 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2374 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2375 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2376 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2377 | fd, PL_perlio_fd_refcnt[fd]); | |
2378 | } | |
2379 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2380 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2381 | |
8b84d7dd | 2382 | #ifdef USE_ITHREADS |
6cb8cb21 | 2383 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2384 | #endif |
8b84d7dd | 2385 | } else { |
12605ff9 | 2386 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2387 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2388 | } |
2389 | } | |
2390 | ||
168d5872 NIS |
2391 | int |
2392 | PerlIOUnix_refcnt_dec(int fd) | |
2393 | { | |
2394 | int cnt = 0; | |
22c96fc1 | 2395 | if (fd >= 0) { |
97aff369 | 2396 | dVAR; |
8b84d7dd | 2397 | #ifdef USE_ITHREADS |
6cb8cb21 | 2398 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2399 | #endif |
8b84d7dd | 2400 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2401 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2402 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2403 | fd, PL_perlio_fd_refcnt_size); |
2404 | } | |
2405 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2406 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2407 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2408 | fd, PL_perlio_fd_refcnt[fd]); |
2409 | } | |
27da23d5 | 2410 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2411 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2412 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2413 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2414 | #endif |
8b84d7dd | 2415 | } else { |
12605ff9 | 2416 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2417 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2418 | } |
2419 | return cnt; | |
2420 | } | |
2421 | ||
2e0cfa16 FC |
2422 | int |
2423 | PerlIOUnix_refcnt(int fd) | |
2424 | { | |
2425 | dTHX; | |
2426 | int cnt = 0; | |
2427 | if (fd >= 0) { | |
2428 | dVAR; | |
2429 | #ifdef USE_ITHREADS | |
2430 | MUTEX_LOCK(&PL_perlio_mutex); | |
2431 | #endif | |
2432 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2433 | /* diag_listed_as: refcnt: fd %d%s */ | |
2434 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2435 | fd, PL_perlio_fd_refcnt_size); | |
2436 | } | |
2437 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2438 | /* diag_listed_as: refcnt: fd %d%s */ | |
2439 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2440 | fd, PL_perlio_fd_refcnt[fd]); | |
2441 | } | |
2442 | cnt = PL_perlio_fd_refcnt[fd]; | |
2443 | #ifdef USE_ITHREADS | |
2444 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2445 | #endif | |
2446 | } else { | |
2447 | /* diag_listed_as: refcnt: fd %d%s */ | |
2448 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2449 | } | |
2450 | return cnt; | |
2451 | } | |
2452 | ||
694c95cf JH |
2453 | void |
2454 | PerlIO_cleanup(pTHX) | |
2455 | { | |
97aff369 | 2456 | dVAR; |
694c95cf JH |
2457 | int i; |
2458 | #ifdef USE_ITHREADS | |
a25429c6 | 2459 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2460 | #else |
2461 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2462 | #endif |
e47547a8 | 2463 | |
694c95cf JH |
2464 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2465 | for (i=0; i < 3; i++) | |
2466 | PerlIOUnix_refcnt_inc(i); | |
2467 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2468 | /* Restore STDIN..STDERR refcount */ | |
2469 | for (i=0; i < 3; i++) | |
2470 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2471 | |
2472 | if (PL_known_layers) { | |
2473 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2474 | PL_known_layers = NULL; | |
2475 | } | |
27da23d5 | 2476 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2477 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2478 | PL_def_layerlist = NULL; | |
2479 | } | |
6cb8cb21 RGS |
2480 | } |
2481 | ||
0934c9d9 | 2482 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2483 | { |
53d44271 | 2484 | dVAR; |
4f3da17a DM |
2485 | #if 0 |
2486 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2487 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2488 | being present (at least in win32) :-(. | |
2489 | Disable for now. | |
2490 | */ | |
6cb8cb21 RGS |
2491 | #ifdef DEBUGGING |
2492 | { | |
2493 | /* By now all filehandles should have been closed, so any | |
2494 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2495 | * errors. */ | |
77db880c JH |
2496 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2497 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2498 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2499 | int i; |
2500 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2501 | if (PL_perlio_fd_refcnt[i]) { |
2502 | const STRLEN len = | |
2503 | my_snprintf(buf, sizeof(buf), | |
2504 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2505 | i, PL_perlio_fd_refcnt[i]); | |
2506 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2507 | } | |
6cb8cb21 RGS |
2508 | } |
2509 | } | |
2510 | #endif | |
4f3da17a | 2511 | #endif |
eae082a0 JH |
2512 | /* Not bothering with PL_perlio_mutex since by now |
2513 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2514 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2515 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2516 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2517 | PL_perlio_fd_refcnt = NULL; |
2518 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2519 | } |
694c95cf JH |
2520 | } |
2521 | ||
9e353e3b | 2522 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2523 | /* |
71200d45 | 2524 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2525 | */ |
9e353e3b | 2526 | |
14a5cf38 | 2527 | typedef struct { |
22569500 NIS |
2528 | struct _PerlIO base; /* The generic part */ |
2529 | int fd; /* UNIX like file descriptor */ | |
2530 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2531 | } PerlIOUnix; |
2532 | ||
abf9167d DM |
2533 | static void |
2534 | S_lockcnt_dec(pTHX_ const void* f) | |
2535 | { | |
2536 | PerlIO_lockcnt((PerlIO*)f)--; | |
2537 | } | |
2538 | ||
2539 | ||
2540 | /* call the signal handler, and if that handler happens to clear | |
2541 | * this handle, free what we can and return true */ | |
2542 | ||
2543 | static bool | |
2544 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2545 | ENTER; | |
2546 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2547 | PerlIO_lockcnt(f)++; | |
2548 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2549 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2550 | LEAVE; | |
abf9167d | 2551 | return 0; |
be48bbe8 | 2552 | } |
abf9167d DM |
2553 | /* we've just run some perl-level code that could have done |
2554 | * anything, including closing the file or clearing this layer. | |
2555 | * If so, free any lower layers that have already been | |
2556 | * cleared, then return an error. */ | |
2557 | while (PerlIOValid(f) && | |
2558 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2559 | { | |
2560 | const PerlIOl *l = *f; | |
2561 | *f = l->next; | |
2562 | Safefree(l); | |
2563 | } | |
be48bbe8 | 2564 | LEAVE; |
abf9167d DM |
2565 | return 1; |
2566 | } | |
2567 | ||
6f9d8c32 | 2568 | int |
9e353e3b | 2569 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2570 | { |
14a5cf38 | 2571 | int oflags = -1; |
3b6c1aba | 2572 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2573 | mode++; |
2574 | switch (*mode) { | |
2575 | case 'r': | |
2576 | oflags = O_RDONLY; | |
2577 | if (*++mode == '+') { | |
2578 | oflags = O_RDWR; | |
2579 | mode++; | |
2580 | } | |
2581 | break; | |
2582 | ||
2583 | case 'w': | |
2584 | oflags = O_CREAT | O_TRUNC; | |
2585 | if (*++mode == '+') { | |
2586 | oflags |= O_RDWR; | |
2587 | mode++; | |
2588 | } | |
2589 | else | |
2590 | oflags |= O_WRONLY; | |
2591 | break; | |
2592 | ||
2593 | case 'a': | |
2594 | oflags = O_CREAT | O_APPEND; | |
2595 | if (*++mode == '+') { | |
2596 | oflags |= O_RDWR; | |
2597 | mode++; | |
2598 | } | |
2599 | else | |
2600 | oflags |= O_WRONLY; | |
2601 | break; | |
2602 | } | |
2603 | if (*mode == 'b') { | |
2604 | oflags |= O_BINARY; | |
2605 | oflags &= ~O_TEXT; | |
2606 | mode++; | |
2607 | } | |
2608 | else if (*mode == 't') { | |
2609 | oflags |= O_TEXT; | |
2610 | oflags &= ~O_BINARY; | |
2611 | mode++; | |
2612 | } | |
2613 | /* | |
71200d45 | 2614 | * Always open in binary mode |
14a5cf38 JH |
2615 | */ |
2616 | oflags |= O_BINARY; | |
2617 | if (*mode || oflags == -1) { | |
93189314 | 2618 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2619 | oflags = -1; |
2620 | } | |
2621 | return oflags; | |
9e353e3b NIS |
2622 | } |
2623 | ||
2624 | IV | |
f62ce20a | 2625 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2626 | { |
96a5add6 | 2627 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2628 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2629 | } |
2630 | ||
aa063c35 NIS |
2631 | static void |
2632 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2633 | { |
de009b76 | 2634 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2635 | #if defined(WIN32) |
aa063c35 NIS |
2636 | Stat_t st; |
2637 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2638 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2639 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2640 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2641 | } | |
aa063c35 NIS |
2642 | else { |
2643 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2644 | } | |
6caa5a9c NIS |
2645 | } |
2646 | #endif | |
aa063c35 NIS |
2647 | s->fd = fd; |
2648 | s->oflags = imode; | |
2649 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2650 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2651 | } |
2652 | ||
2653 | IV | |
2654 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2655 | { | |
2656 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2657 | if (*PerlIONext(f)) { |
4b069b44 | 2658 | /* We never call down so do any pending stuff now */ |
03c0554d | 2659 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2660 | /* |
71200d45 | 2661 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2662 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2663 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2664 | */ |
acbd16bf | 2665 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2666 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2667 | } |
2668 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2669 | |
14a5cf38 | 2670 | return code; |
4b803d04 NIS |
2671 | } |
2672 | ||
c2fcde81 JH |
2673 | IV |
2674 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2675 | { | |
de009b76 | 2676 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2677 | Off_t new_loc; |
96a5add6 | 2678 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2679 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2680 | #ifdef ESPIPE | |
2681 | SETERRNO(ESPIPE, LIB_INVARG); | |
2682 | #else | |
2683 | SETERRNO(EINVAL, LIB_INVARG); | |
2684 | #endif | |
2685 | return -1; | |
2686 | } | |
0723351e NC |
2687 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2688 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2689 | return -1; |
c2fcde81 JH |
2690 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2691 | return 0; | |
2692 | } | |
2693 | ||
9e353e3b | 2694 | PerlIO * |
14a5cf38 JH |
2695 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2696 | IV n, const char *mode, int fd, int imode, | |
2697 | int perm, PerlIO *f, int narg, SV **args) | |
2698 | { | |
d9dac8cd | 2699 | if (PerlIOValid(f)) { |
cc6623a8 | 2700 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2701 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2702 | } |
2703 | if (narg > 0) { | |
3b6c1aba | 2704 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2705 | mode++; |
2706 | else { | |
2707 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2708 | #ifdef VMS |
2709 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2710 | #else | |
14a5cf38 | 2711 | perm = 0666; |
5e2ce0f3 | 2712 | #endif |
14a5cf38 JH |
2713 | } |
2714 | if (imode != -1) { | |
e62f0680 | 2715 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2716 | fd = PerlLIO_open3(path, imode, perm); |
2717 | } | |
2718 | } | |
2719 | if (fd >= 0) { | |
3b6c1aba | 2720 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2721 | mode++; |
2722 | if (!f) { | |
2723 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2724 | } |
2725 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2726 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2727 | return NULL; | |
2728 | } | |
d9dac8cd | 2729 | } |
aa063c35 | 2730 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2731 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2732 | if (*mode == IoTYPE_APPEND) |
2733 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2734 | return f; |
2735 | } | |
2736 | else { | |
2737 | if (f) { | |
6f207bd3 | 2738 | NOOP; |
14a5cf38 | 2739 | /* |
71200d45 | 2740 | * FIXME: pop layers ??? |
14a5cf38 JH |
2741 | */ |
2742 | } | |
2743 | return NULL; | |
2744 | } | |
9e353e3b NIS |
2745 | } |
2746 | ||
71200d45 | 2747 | PerlIO * |
ecdeb87c | 2748 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2749 | { |
dcda55fc | 2750 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2751 | int fd = os->fd; |
ecdeb87c NIS |
2752 | if (flags & PERLIO_DUP_FD) { |
2753 | fd = PerlLIO_dup(fd); | |
2754 | } | |
22c96fc1 | 2755 | if (fd >= 0) { |
ecdeb87c | 2756 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2757 | if (f) { |
2758 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2759 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2760 | return f; |
2761 | } | |
71200d45 NIS |
2762 | } |
2763 | return NULL; | |
2764 | } | |
2765 | ||
2766 | ||
9e353e3b | 2767 | SSize_t |
f62ce20a | 2768 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2769 | { |
97aff369 | 2770 | dVAR; |
abf9167d DM |
2771 | int fd; |
2772 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2773 | return -1; | |
2774 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2775 | #ifdef PERLIO_STD_SPECIAL |
2776 | if (fd == 0) | |
2777 | return PERLIO_STD_IN(fd, vbuf, count); | |
2778 | #endif | |
81428673 | 2779 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2780 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2781 | return 0; |
1fd8f4ce | 2782 | } |
14a5cf38 | 2783 | while (1) { |
b464bac0 | 2784 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2785 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2786 | if (len < 0) { |
2787 | if (errno != EAGAIN) { | |
2788 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2789 | } | |
2790 | } | |
2791 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2792 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2793 | SETERRNO(0,0); |
2794 | } | |
14a5cf38 JH |
2795 | return len; |
2796 | } | |
abf9167d DM |
2797 | /* EINTR */ |
2798 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2799 | return -1; | |
14a5cf38 | 2800 | } |
b464bac0 | 2801 | /*NOTREACHED*/ |
9e353e3b NIS |
2802 | } |
2803 | ||
2804 | SSize_t | |
f62ce20a | 2805 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2806 | { |
97aff369 | 2807 | dVAR; |
abf9167d DM |
2808 | int fd; |
2809 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2810 | return -1; | |
2811 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2812 | #ifdef PERLIO_STD_SPECIAL |
2813 | if (fd == 1 || fd == 2) | |
2814 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2815 | #endif | |
14a5cf38 | 2816 | while (1) { |
de009b76 | 2817 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2818 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2819 | if (len < 0) { |
2820 | if (errno != EAGAIN) { | |
2821 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2822 | } | |
2823 | } | |
14a5cf38 JH |
2824 | return len; |
2825 | } | |
abf9167d DM |
2826 | /* EINTR */ |
2827 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2828 | return -1; | |
06da4f11 | 2829 | } |
1b6737cc | 2830 | /*NOTREACHED*/ |
9e353e3b NIS |
2831 | } |
2832 | ||
9e353e3b | 2833 | Off_t |
f62ce20a | 2834 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2835 | { |
96a5add6 AL |
2836 | PERL_UNUSED_CONTEXT; |
2837 | ||
14a5cf38 | 2838 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2839 | } |
2840 | ||
2556f95e GF |
2841 | |
2842 | IV | |
2376d97d | 2843 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2844 | { |
97aff369 | 2845 | dVAR; |
de009b76 | 2846 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2847 | int code = 0; |
168d5872 NIS |
2848 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2849 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2850 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2851 | return 0; | |
22569500 | 2852 | } |
93a8090d NIS |
2853 | } |
2854 | else { | |
93189314 | 2855 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2856 | return -1; |
2857 | } | |
14a5cf38 JH |
2858 | while (PerlLIO_close(fd) != 0) { |
2859 | if (errno != EINTR) { | |
2860 | code = -1; | |
2861 | break; | |
2862 | } | |
abf9167d DM |
2863 | /* EINTR */ |
2864 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2865 | return -1; | |
14a5cf38 JH |
2866 | } |
2867 | if (code == 0) { | |
2868 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2869 | } | |
2870 | return code; | |
9e353e3b NIS |
2871 | } |
2872 | ||
27da23d5 | 2873 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2874 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2875 | "unix", |
2876 | sizeof(PerlIOUnix), | |
2877 | PERLIO_K_RAW, | |
2878 | PerlIOUnix_pushed, | |
2376d97d | 2879 | PerlIOBase_popped, |
14a5cf38 | 2880 | PerlIOUnix_open, |
86e05cf2 | 2881 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2882 | NULL, |
2883 | PerlIOUnix_fileno, | |
71200d45 | 2884 | PerlIOUnix_dup, |
14a5cf38 JH |
2885 | PerlIOUnix_read, |
2886 | PerlIOBase_unread, | |
2887 | PerlIOUnix_write, | |
2888 | PerlIOUnix_seek, | |
2889 | PerlIOUnix_tell, | |
2890 | PerlIOUnix_close, | |
22569500 NIS |
2891 | PerlIOBase_noop_ok, /* flush */ |
2892 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2893 | PerlIOBase_eof, |
2894 | PerlIOBase_error, | |
2895 | PerlIOBase_clearerr, | |
2896 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2897 | NULL, /* get_base */ |
2898 | NULL, /* get_bufsiz */ | |
2899 | NULL, /* get_ptr */ | |
2900 | NULL, /* get_cnt */ | |
2901 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2902 | }; |
2903 | ||
2904 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2905 | /* |
71200d45 | 2906 | * stdio as a layer |
14a5cf38 | 2907 | */ |
9e353e3b | 2908 | |
313e59c8 NIS |
2909 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2910 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2911 | broken by the last second glibc 2.3 fix | |
2912 | */ | |
2913 | #define STDIO_BUFFER_WRITABLE | |
2914 | #endif | |
2915 | ||
2916 | ||
14a5cf38 JH |
2917 | typedef struct { |
2918 | struct _PerlIO base; | |
22569500 | 2919 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2920 | } PerlIOStdio; |
2921 | ||
2922 | IV | |
f62ce20a | 2923 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2924 | { |
96a5add6 AL |
2925 | PERL_UNUSED_CONTEXT; |
2926 | ||
c4420975 AL |
2927 | if (PerlIOValid(f)) { |
2928 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2929 | if (s) | |
2930 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2931 | } |
2932 | errno = EBADF; | |
2933 | return -1; | |
9e353e3b NIS |
2934 | } |
2935 | ||
766a733e | 2936 | char * |
14a5cf38 JH |
2937 | PerlIOStdio_mode(const char *mode, char *tmode) |
2938 | { | |
de009b76 | 2939 | char * const ret = tmode; |
a0625d38 SR |
2940 | if (mode) { |
2941 | while (*mode) { | |
2942 | *tmode++ = *mode++; | |
2943 | } | |
14a5cf38 | 2944 | } |
95005ad8 | 2945 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2946 | *tmode++ = 'b'; |
2947 | #endif | |
14a5cf38 JH |
2948 | *tmode = '\0'; |
2949 | return ret; | |
2950 | } | |
2951 | ||
4b803d04 | 2952 | IV |
2dc2558e | 2953 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2954 | { |
1fd8f4ce NIS |
2955 | PerlIO *n; |
2956 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2957 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2958 | if (toptab == tab) { |
2959 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2960 | PerlIO_pop(aTHX_ f); | |
2961 | return 0; | |
2962 | } else { | |
de009b76 | 2963 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2964 | char tmode[8]; |
2965 | FILE *stdio; | |
81428673 | 2966 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2967 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2968 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2969 | /* We never call down so do any pending stuff now */ | |
2970 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2971 | } |
1fd8f4ce NIS |
2972 | else { |
2973 | return -1; | |
2974 | } | |
2975 | } | |
14a5cf38 | 2976 | } |
2dc2558e | 2977 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2978 | } |
2979 | ||
22569500 | 2980 | |
9e353e3b | 2981 | PerlIO * |
4b069b44 | 2982 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2983 | { |
14a5cf38 JH |
2984 | dTHX; |
2985 | PerlIO *f = NULL; | |
2986 | if (stdio) { | |
22569500 | 2987 | PerlIOStdio *s; |
4b069b44 NIS |
2988 | if (!mode || !*mode) { |
2989 | /* We need to probe to see how we can open the stream | |
2990 | so start with read/write and then try write and read | |
2991 | we dup() so that we can fclose without loosing the fd. | |
2992 | ||
2993 | Note that the errno value set by a failing fdopen | |
2994 | varies between stdio implementations. | |
2995 | */ | |
de009b76 | 2996 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2997 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2998 | if (!f2) { |
a33cf58c | 2999 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
3000 | } |
3001 | if (!f2) { | |
a33cf58c | 3002 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
3003 | } |
3004 | if (!f2) { | |
3005 | /* Don't seem to be able to open */ | |
3006 | PerlLIO_close(fd); | |
3007 | return f; | |
3008 | } | |
3009 | fclose(f2); | |
22569500 | 3010 | } |
a0714e2c | 3011 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
3012 | s = PerlIOSelf(f, PerlIOStdio); |
3013 | s->stdio = stdio; | |
c586124f | 3014 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 3015 | } |
14a5cf38 JH |
3016 | } |
3017 | return f; | |
9e353e3b NIS |
3018 | } |
3019 | ||
3020 | PerlIO * | |
14a5cf38 JH |
3021 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3022 | IV n, const char *mode, int fd, int imode, | |
3023 | int perm, PerlIO *f, int narg, SV **args) | |
3024 | { | |
3025 | char tmode[8]; | |
d9dac8cd | 3026 | if (PerlIOValid(f)) { |
dcda55fc AL |
3027 | const char * const path = SvPV_nolen_const(*args); |
3028 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
3029 | FILE *stdio; |
3030 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
3031 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
3032 | s->stdio); |
3033 | if (!s->stdio) | |
3034 | return NULL; | |
3035 | s->stdio = stdio; | |
1751d015 | 3036 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3037 | return f; |
3038 | } | |
3039 | else { | |
3040 | if (narg > 0) { | |
dcda55fc | 3041 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 3042 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3043 | mode++; |
3044 | fd = PerlLIO_open3(path, imode, perm); | |
3045 | } | |
3046 | else { | |
95005ad8 GH |
3047 | FILE *stdio; |
3048 | bool appended = FALSE; | |
3049 | #ifdef __CYGWIN__ | |
3050 | /* Cygwin wants its 'b' early. */ | |
3051 | appended = TRUE; | |
3052 | mode = PerlIOStdio_mode(mode, tmode); | |
3053 | #endif | |
3054 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3055 | if (stdio) { |
6f0313ac JH |
3056 | if (!f) { |
3057 | f = PerlIO_allocate(aTHX); | |
3058 | } | |
95005ad8 GH |
3059 | if (!appended) |
3060 | mode = PerlIOStdio_mode(mode, tmode); | |
3061 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3062 | if (f) { | |
0f0f9e2b JH |
3063 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3064 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3065 | } else { | |
3066 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3067 | } |
3068 | return f; | |
3069 | } | |
3070 | else { | |
3071 | return NULL; | |
3072 | } | |
14a5cf38 JH |
3073 | } |
3074 | } | |
3075 | if (fd >= 0) { | |
3076 | FILE *stdio = NULL; | |
3077 | int init = 0; | |
3b6c1aba | 3078 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3079 | init = 1; |
3080 | mode++; | |
3081 | } | |
3082 | if (init) { | |
3083 | switch (fd) { | |
3084 | case 0: | |
3085 | stdio = PerlSIO_stdin; | |
3086 | break; | |
3087 | case 1: | |
3088 | stdio = PerlSIO_stdout; | |
3089 | break; | |
3090 | case 2: | |
3091 | stdio = PerlSIO_stderr; | |
3092 | break; | |
3093 | } | |
3094 | } | |
3095 | else { | |
3096 | stdio = PerlSIO_fdopen(fd, mode = | |
3097 | PerlIOStdio_mode(mode, tmode)); | |
3098 | } | |
3099 | if (stdio) { | |
d9dac8cd NIS |
3100 | if (!f) { |
3101 | f = PerlIO_allocate(aTHX); | |
3102 | } | |
a33cf58c | 3103 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3104 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3105 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3106 | } |
14a5cf38 JH |
3107 | return f; |
3108 | } | |
3109 | } | |
3110 | } | |
ee518936 | 3111 | return NULL; |
9e353e3b NIS |
3112 | } |
3113 | ||
1751d015 | 3114 | PerlIO * |
ecdeb87c | 3115 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3116 | { |
3117 | /* This assumes no layers underneath - which is what | |
3118 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3119 | */ | |
ecdeb87c | 3120 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3121 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3122 | const int fd = fileno(stdio); |
9217ff3f | 3123 | char mode[8]; |
ecdeb87c | 3124 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3125 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3126 | if (dfd >= 0) { |
3127 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3128 | goto set_this; | |
ecdeb87c NIS |
3129 | } |
3130 | else { | |
6f207bd3 | 3131 | NOOP; |
ecdeb87c NIS |
3132 | /* FIXME: To avoid messy error recovery if dup fails |
3133 | re-use the existing stdio as though flag was not set | |
3134 | */ | |
3135 | } | |
3136 | } | |
9217ff3f NIS |
3137 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3138 | set_this: | |
694c95cf | 3139 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3140 | if(stdio) { |
3141 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3142 | } | |
1751d015 NIS |
3143 | } |
3144 | return f; | |
3145 | } | |
3146 | ||
0d7a5398 NIS |
3147 | static int |
3148 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3149 | { | |
96a5add6 AL |
3150 | PERL_UNUSED_CONTEXT; |
3151 | ||
0d7a5398 | 3152 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3153 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3154 | */ |
ef8eacb8 AT |
3155 | # if defined(__UCLIBC__) |
3156 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3157 | f->__filedes = -1; | |
3158 | return 1; | |
3159 | # elif defined(__GLIBC__) | |
0d7a5398 | 3160 | /* There may be a better way for GLIBC: |
37725cdc | 3161 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3162 | */ |
3163 | f->_fileno = -1; | |
3164 | return 1; | |
3165 | # elif defined(__sun__) | |
f5992bc4 | 3166 | PERL_UNUSED_ARG(f); |
cfedb851 | 3167 | return 0; |
0d7a5398 NIS |
3168 | # elif defined(__hpux) |
3169 | f->__fileH = 0xff; | |
3170 | f->__fileL = 0xff; | |
3171 | return 1; | |
9837d373 | 3172 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3173 | your platform does not have special entry try this one. |
9837d373 NIS |
3174 | [For OSF only have confirmation for Tru64 (alpha) |
3175 | but assume other OSFs will be similar.] | |
37725cdc | 3176 | */ |
9837d373 | 3177 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3178 | f->_file = -1; |
3179 | return 1; | |
3180 | # elif defined(__FreeBSD__) | |
3181 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3182 | - we could insert a dummy func in the _close function entry |
3183 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3184 | */ |
3185 | f->_file = -1; | |
0c49ea6a SU |
3186 | return 1; |
3187 | # elif defined(__OpenBSD__) | |
3188 | /* There may be a better way on OpenBSD: | |
3189 | - we could insert a dummy func in the _close function entry | |
3190 | f->_close = (int (*)(void *)) dummy_close; | |
3191 | */ | |
3192 | f->_file = -1; | |
0d7a5398 | 3193 | return 1; |
59ad941d IZ |
3194 | # elif defined(__EMX__) |
3195 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3196 | f->_handle = -1; | |
3197 | return 1; | |
0d7a5398 NIS |
3198 | # elif defined(__CYGWIN__) |
3199 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3200 | - we could insert a dummy func in the _close function entry |
3201 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3202 | */ |
3203 | f->_file = -1; | |
3204 | return 1; | |
3205 | # elif defined(WIN32) | |
378eeda7 | 3206 | # if defined(UNDER_CE) |
b475b3e6 JH |
3207 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3208 | structure at all | |
3209 | */ | |
0d7a5398 NIS |
3210 | # else |
3211 | f->_file = -1; | |
3212 | # endif | |
3213 | return 1; | |
3214 | # else | |
3215 | #if 0 | |
37725cdc | 3216 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3217 | (which isn't thread safe) instead |
37725cdc | 3218 | */ |
0d7a5398 NIS |
3219 | # error "Don't know how to set FILE.fileno on your platform" |
3220 | #endif | |
8772537c | 3221 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3222 | return 0; |
3223 | # endif | |
3224 | } | |
3225 | ||
1751d015 | 3226 | IV |
f62ce20a | 3227 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3228 | { |
c4420975 | 3229 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3230 | if (!stdio) { |
3231 | errno = EBADF; | |
3232 | return -1; | |
3233 | } | |
9217ff3f | 3234 | else { |
de009b76 | 3235 | const int fd = fileno(stdio); |
0d7a5398 | 3236 | int invalidate = 0; |
bbfd922f | 3237 | IV result = 0; |
1d791a44 | 3238 | int dupfd = -1; |
4ee39169 | 3239 | dSAVEDERRNO; |
a2e578da MHM |
3240 | #ifdef USE_ITHREADS |
3241 | dVAR; | |
3242 | #endif | |
0d7a5398 | 3243 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3244 | /* Socks lib overrides close() but stdio isn't linked to |
3245 | that library (though we are) - so we must call close() | |
3246 | on sockets on stdio's behalf. | |
3247 | */ | |
0d7a5398 NIS |
3248 | int optval; |
3249 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3250 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3251 | invalidate = 1; |
0d7a5398 | 3252 | #endif |
d8723f43 NC |
3253 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3254 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3255 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3256 | trying to close an already closed handle which somehow it still has | |
3257 | a reference to. (via.xs, I'm looking at you). */ | |
3258 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3259 | /* File descriptor still in use */ | |
0d7a5398 | 3260 | invalidate = 1; |
d8723f43 | 3261 | } |
0d7a5398 | 3262 | if (invalidate) { |
6b4ce6c8 AL |
3263 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3264 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3265 | return 0; | |
3266 | if (stdio == stdout || stdio == stderr) | |
3267 | return PerlIO_flush(f); | |
37725cdc NIS |
3268 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3269 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3270 | fileno slot of the FILE * | |
3271 | */ | |
bbfd922f | 3272 | result = PerlIO_flush(f); |
4ee39169 | 3273 | SAVE_ERRNO; |
6b4ce6c8 | 3274 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3275 | if (!invalidate) { |
9bab90c0 NC |
3276 | #ifdef USE_ITHREADS |
3277 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3278 | /* Right. We need a mutex here because for a brief while we |
3279 | will have the situation that fd is actually closed. Hence if | |
3280 | a second thread were to get into this block, its dup() would | |
3281 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3282 | Then if we get to the dup2() first, we blat the fd back |
3283 | (messing up its temporary as a side effect) only for it to | |
3284 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3285 | ||
3286 | /* There is, of course, a race condition, that any other thread | |
3287 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3288 | for the duration of this little manoeuvrer. Perhaps we |
3289 | should hold an IO mutex for the duration of every IO | |
3290 | operation if we know that invalidate doesn't work on this | |
3291 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3292 | |
3293 | Except that correctness trumps speed. | |
3294 | Advice from klortho #11912. */ | |
3295 | #endif | |
6b4ce6c8 | 3296 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3297 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3298 | if (dupfd < 0) { |
3299 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3300 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3301 | recover from here, or if closing this particular FILE * | |
3302 | is a good idea now. */ | |
3303 | } | |
3304 | #endif | |
3305 | } | |
94ccb807 JH |
3306 | } else { |
3307 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3308 | } |
0d7a5398 | 3309 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3310 | /* We treat error from stdio as success if we invalidated |
3311 | errno may NOT be expected EBADF | |
e8529473 NIS |
3312 | */ |
3313 | if (invalidate && result != 0) { | |
4ee39169 | 3314 | RESTORE_ERRNO; |
0d7a5398 | 3315 | result = 0; |
37725cdc | 3316 | } |
6b4ce6c8 AL |
3317 | #ifdef SOCKS5_VERSION_NAME |
3318 | /* in SOCKS' case, let close() determine return value */ | |
3319 | result = close(fd); | |
3320 | #endif | |
1d791a44 | 3321 | if (dupfd >= 0) { |
0d7a5398 | 3322 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3323 | PerlLIO_close(dupfd); |
711e8db2 | 3324 | #ifdef USE_ITHREADS |
9bab90c0 | 3325 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3326 | #endif |
9217ff3f NIS |
3327 | } |
3328 | return result; | |
37725cdc | 3329 | } |
1751d015 NIS |
3330 | } |
3331 | ||
9e353e3b | 3332 | SSize_t |
f62ce20a | 3333 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3334 | { |
97aff369 | 3335 | dVAR; |
abf9167d | 3336 | FILE * s; |
14a5cf38 | 3337 | SSize_t got = 0; |
abf9167d DM |
3338 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3339 | return -1; | |
3340 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3341 | for (;;) { |
3342 | if (count == 1) { | |
3343 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3344 | /* | |
3345 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3346 | * stdio does not do that for fread() | |
3347 | */ | |
de009b76 | 3348 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3349 | if (ch != EOF) { |
3350 | *buf = ch; | |
3351 | got = 1; | |
3352 | } | |
14a5cf38 | 3353 | } |
4d948241 NIS |
3354 | else |
3355 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3356 | if (got == 0 && PerlSIO_ferror(s)) |
3357 | got = -1; | |
42a7a32f | 3358 | if (got >= 0 || errno != EINTR) |
4d948241 | 3359 | break; |
abf9167d DM |
3360 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3361 | return -1; | |
42a7a32f | 3362 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3363 | } |
14a5cf38 | 3364 | return got; |
9e353e3b NIS |
3365 | } |
3366 | ||
3367 | SSize_t | |
f62ce20a | 3368 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3369 | { |
14a5cf38 | 3370 | SSize_t unread = 0; |
c4420975 | 3371 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3372 | |
313e59c8 | 3373 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3374 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3375 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3376 | STDCHAR *base = PerlIO_get_base(f); | |
3377 | SSize_t cnt = PerlIO_get_cnt(f); | |
3378 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3379 | SSize_t avail = ptr - base; | |
3380 | if (avail > 0) { | |
3381 | if (avail > count) { | |
3382 | avail = count; | |
3383 | } | |
3384 | ptr -= avail; | |
3385 | Move(buf-avail,ptr,avail,STDCHAR); | |
3386 | count -= avail; | |
3387 | unread += avail; | |
3388 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3389 | if (PerlSIO_feof(s) && unread >= 0) |
3390 | PerlSIO_clearerr(s); | |
3391 | } | |
3392 | } | |
313e59c8 NIS |
3393 | else |
3394 | #endif | |
3395 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3396 | /* We can get pointer to buffer but not its base |
3397 | Do ungetc() but check chars are ending up in the | |
3398 | buffer | |
3399 | */ | |
3400 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3401 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3402 | while (count > 0) { | |
de009b76 | 3403 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3404 | if (ungetc(ch,s) != ch) { |
3405 | /* ungetc did not work */ | |
3406 | break; | |
3407 | } | |
3408 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3409 | /* Did not change pointer as expected */ | |
3410 | fgetc(s); /* get char back again */ | |
3411 | break; | |
3412 | } | |
3413 | /* It worked ! */ | |
3414 | count--; | |
3415 | unread++; | |
93679785 NIS |
3416 | } |
3417 | } | |
3418 | ||
3419 | if (count > 0) { | |
3420 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3421 | } |
3422 | return unread; | |
9e353e3b NIS |
3423 | } |
3424 | ||
3425 | SSize_t | |
f62ce20a | 3426 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3427 | { |
97aff369 | 3428 | dVAR; |
4d948241 | 3429 | SSize_t got; |
abf9167d DM |
3430 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3431 | return -1; | |
4d948241 NIS |
3432 | for (;;) { |
3433 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3434 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3435 | if (got >= 0 || errno != EINTR) |
4d948241 | 3436 | break; |
abf9167d DM |
3437 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3438 | return -1; | |
42a7a32f | 3439 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3440 | } |
3441 | return got; | |
9e353e3b NIS |
3442 | } |
3443 | ||
94a175e1 | 3444 | IV |
f62ce20a | 3445 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3446 | { |
c4420975 | 3447 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3448 | PERL_UNUSED_CONTEXT; |
3449 | ||
94a175e1 | 3450 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3451 | } |
3452 | ||
3453 | Off_t | |
f62ce20a | 3454 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3455 | { |
c4420975 | 3456 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3457 | PERL_UNUSED_CONTEXT; |
3458 | ||
94a175e1 | 3459 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3460 | } |
3461 | ||
3462 | IV | |
f62ce20a | 3463 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3464 | { |
c4420975 | 3465 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3466 | PERL_UNUSED_CONTEXT; |
3467 | ||
14a5cf38 JH |
3468 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3469 | return PerlSIO_fflush(stdio); | |
3470 | } | |
3471 | else { | |
6f207bd3 | 3472 | NOOP; |
88b61e10 | 3473 | #if 0 |
14a5cf38 JH |
3474 | /* |
3475 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3476 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3477 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3478 | * layer read-to-read |
14a5cf38 JH |
3479 | */ |
3480 | /* | |
71200d45 | 3481 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3482 | */ |
4ee39169 | 3483 | dSAVE_ERRNO; |
14a5cf38 | 3484 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3485 | RESTORE_ERRNO; |
88b61e10 | 3486 | #endif |
14a5cf38 JH |
3487 | } |
3488 | return 0; | |
9e353e3b NIS |
3489 | } |
3490 | ||
3491 | IV | |
f62ce20a | 3492 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3493 | { |
96a5add6 AL |
3494 | PERL_UNUSED_CONTEXT; |
3495 | ||
14a5cf38 | 3496 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3497 | } |
3498 | ||
3499 | IV | |
f62ce20a | 3500 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3501 | { |
96a5add6 AL |
3502 | PERL_UNUSED_CONTEXT; |
3503 | ||
263df5f1 | 3504 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3505 | } |
3506 | ||
3507 | void | |
f62ce20a | 3508 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3509 | { |
96a5add6 AL |
3510 | PERL_UNUSED_CONTEXT; |
3511 | ||
14a5cf38 | 3512 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3513 | } |
3514 | ||
3515 | void | |
f62ce20a | 3516 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3517 | { |
96a5add6 AL |
3518 | PERL_UNUSED_CONTEXT; |
3519 | ||
9e353e3b | 3520 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3521 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3522 | #else |
bd61b366 | 3523 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3524 | #endif |
3525 | } | |
3526 | ||
3527 | #ifdef FILE_base | |
3528 | STDCHAR * | |
f62ce20a | 3529 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3530 | { |
c4420975 | 3531 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3532 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3533 | } |
3534 | ||
3535 | Size_t | |
f62ce20a | 3536 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3537 | { |
c4420975 | 3538 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3539 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3540 | } |
3541 | #endif | |
3542 | ||
3543 | #ifdef USE_STDIO_PTR | |
3544 | STDCHAR * | |
f62ce20a | 3545 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3546 | { |
c4420975 | 3547 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3548 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3549 | } |
3550 | ||
3551 | SSize_t | |
f62ce20a | 3552 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3553 | { |
c4420975 | 3554 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3555 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3556 | } |
3557 | ||
3558 | void | |
f62ce20a | 3559 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3560 | { |
c4420975 | 3561 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3562 | if (ptr != NULL) { |
9e353e3b | 3563 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3564 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3565 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3566 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3567 | #endif |
3568 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3569 | /* |
71200d45 | 3570 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3571 | */ |
3572 | return; | |
9e353e3b | 3573 | #endif |
22569500 | 3574 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3575 | PerlProc_abort(); |
22569500 | 3576 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3577 | } |
3578 | /* | |
71200d45 | 3579 | * Now (or only) set cnt |
14a5cf38 | 3580 | */ |
9e353e3b | 3581 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3582 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3583 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3584 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3585 | PerlSIO_set_ptr(stdio, |
3586 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3587 | cnt)); | |
22569500 | 3588 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3589 | PerlProc_abort(); |
22569500 NIS |
3590 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3591 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3592 | } |
3593 | ||
93679785 | 3594 | |
9e353e3b NIS |
3595 | #endif |
3596 | ||
93679785 NIS |
3597 | IV |
3598 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3599 | { | |
abf9167d | 3600 | FILE * stdio; |
93679785 | 3601 | int c; |
96a5add6 | 3602 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3603 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3604 | return -1; | |
3605 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3606 | |
93679785 NIS |
3607 | /* |
3608 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3609 | */ | |
3610 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3611 | if (PerlSIO_fflush(stdio) != 0) | |
3612 | return EOF; | |
3613 | } | |
f3be3723 BL |
3614 | for (;;) { |
3615 | c = PerlSIO_fgetc(stdio); | |
3616 | if (c != EOF) | |
3617 | break; | |
3618 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3619 | return EOF; | |
abf9167d DM |
3620 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3621 | return -1; | |
f3be3723 BL |
3622 | SETERRNO(0,0); |
3623 | } | |
93679785 NIS |
3624 | |
3625 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3626 | |
3627 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3628 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3629 | /* Fake ungetc() to the real buffer in case system's ungetc |
3630 | goes elsewhere | |
3631 | */ | |
3632 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3633 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3634 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3635 | if (ptr == base+1) { | |
3636 | *--ptr = (STDCHAR) c; | |
3637 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3638 | if (PerlSIO_feof(stdio)) | |
3639 | PerlSIO_clearerr(stdio); | |
3640 | return 0; | |
3641 | } | |
3642 | } | |
313e59c8 NIS |
3643 | else |
3644 | #endif | |
3645 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3646 | STDCHAR ch = c; |
3647 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3648 | return 0; | |
3649 | } | |
3650 | } | |
93679785 NIS |
3651 | #endif |
3652 | ||
3653 | #if defined(VMS) | |
3654 | /* An ungetc()d char is handled separately from the regular | |
3655 | * buffer, so we stuff it in the buffer ourselves. | |
3656 | * Should never get called as should hit code above | |
3657 | */ | |
bad9695d NIS |
3658 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3659 | (*stdio)->_cnt++; | |
93679785 NIS |
3660 | #else |
3661 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3662 | using ungetc(). |
93679785 NIS |
3663 | */ |
3664 | if (PerlSIO_ungetc(c, stdio) != c) | |
3665 | return EOF; | |
3666 | #endif | |
3667 | return 0; | |
3668 | } | |
3669 | ||
3670 | ||
3671 | ||
27da23d5 | 3672 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3673 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3674 | "stdio", |
3675 | sizeof(PerlIOStdio), | |
86e05cf2 | 3676 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3677 | PerlIOStdio_pushed, |
2376d97d | 3678 | PerlIOBase_popped, |
14a5cf38 | 3679 | PerlIOStdio_open, |
86e05cf2 | 3680 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3681 | NULL, |
3682 | PerlIOStdio_fileno, | |
71200d45 | 3683 | PerlIOStdio_dup, |
14a5cf38 JH |
3684 | PerlIOStdio_read, |
3685 | PerlIOStdio_unread, | |
3686 | PerlIOStdio_write, | |
3687 | PerlIOStdio_seek, | |
3688 | PerlIOStdio_tell, | |
3689 | PerlIOStdio_close, | |
3690 | PerlIOStdio_flush, | |
3691 | PerlIOStdio_fill, | |
3692 | PerlIOStdio_eof, | |
3693 | PerlIOStdio_error, | |
3694 | PerlIOStdio_clearerr, | |
3695 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3696 | #ifdef FILE_base |
14a5cf38 JH |
3697 | PerlIOStdio_get_base, |
3698 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3699 | #else |
14a5cf38 JH |
3700 | NULL, |
3701 | NULL, | |
9e353e3b NIS |
3702 | #endif |
3703 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3704 | PerlIOStdio_get_ptr, |
3705 | PerlIOStdio_get_cnt, | |
15b61c98 | 3706 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3707 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3708 | # else |
3709 | NULL, | |
3710 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3711 | #else | |
3712 | NULL, | |
14a5cf38 JH |
3713 | NULL, |
3714 | NULL, | |
15b61c98 | 3715 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3716 | }; |
3717 | ||
b9d6bf13 JH |
3718 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3719 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3720 | FILE * |
81428673 | 3721 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3722 | { |
e87a358a | 3723 | dTHX; |
81428673 NIS |
3724 | FILE *stdio = NULL; |
3725 | if (PerlIOValid(f)) { | |
3726 | char buf[8]; | |
3727 | PerlIO_flush(f); | |
3728 | if (!mode || !*mode) { | |
3729 | mode = PerlIO_modestr(f, buf); | |
3730 | } | |
3731 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3732 | if (stdio) { | |
3733 | PerlIOl *l = *f; | |
9f75cc58 | 3734 | PerlIO *f2; |
81428673 NIS |
3735 | /* De-link any lower layers so new :stdio sticks */ |
3736 | *f = NULL; | |
a0714e2c | 3737 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3738 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3739 | s->stdio = stdio; |
6b54a403 | 3740 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3741 | /* Link previous lower layers under new one */ |
3742 | *PerlIONext(f) = l; | |
3743 | } | |
3744 | else { | |
3745 | /* restore layers list */ | |
3746 | *f = l; | |
3747 | } | |
a33cf58c | 3748 | } |
14a5cf38 JH |
3749 | } |
3750 | return stdio; | |
9e353e3b NIS |
3751 | } |
3752 | ||
81428673 | 3753 | |
9e353e3b NIS |
3754 | FILE * |
3755 | PerlIO_findFILE(PerlIO *f) | |
3756 | { | |
14a5cf38 | 3757 | PerlIOl *l = *f; |
bbbc33d0 | 3758 | FILE *stdio; |
14a5cf38 JH |
3759 | while (l) { |
3760 | if (l->tab == &PerlIO_stdio) { | |
3761 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3762 | return s->stdio; | |
3763 | } | |
3764 | l = *PerlIONext(&l); | |
f7e7eb72 | 3765 | } |
4b069b44 | 3766 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3767 | /* However, we're not really exporting a FILE * to someone else (who |
3768 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3769 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3770 | descriptor. We have to do this, because if the loop above returns you |
3771 | the FILE *, then *it* didn't increase any reference count. So there's | |
3772 | only one way to be consistent. */ | |
3773 | stdio = PerlIO_exportFILE(f, NULL); | |
3774 | if (stdio) { | |
3775 | const int fd = fileno(stdio); | |
3776 | if (fd >= 0) | |
3777 | PerlIOUnix_refcnt_dec(fd); | |
3778 | } | |
3779 | return stdio; | |
9e353e3b NIS |
3780 | } |
3781 | ||
b9d6bf13 | 3782 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3783 | void |
3784 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3785 | { | |
27da23d5 | 3786 | dVAR; |
22569500 NIS |
3787 | PerlIOl *l; |
3788 | while ((l = *p)) { | |
3789 | if (l->tab == &PerlIO_stdio) { | |
3790 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3791 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3792 | const int fd = fileno(f); |
3793 | if (fd >= 0) | |
3794 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3795 | { |
3796 | dTHX; | |
3797 | PerlIO_pop(aTHX_ p); | |
3798 | } | |
22569500 NIS |
3799 | return; |
3800 | } | |
3801 | } | |
3802 | p = PerlIONext(p); | |
3803 | } | |
3804 | return; | |
9e353e3b NIS |
3805 | } |
3806 | ||
3807 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3808 | /* |
71200d45 | 3809 | * perlio buffer layer |
14a5cf38 | 3810 | */ |
9e353e3b | 3811 | |
5e2ab84b | 3812 | IV |
2dc2558e | 3813 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3814 | { |
14a5cf38 | 3815 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3816 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3817 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3818 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3819 | } | |
4b069b44 | 3820 | if (*PerlIONext(f)) { |
de009b76 | 3821 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3822 | if (posn != (Off_t) - 1) { |
3823 | b->posn = posn; | |
3824 | } | |
14a5cf38 | 3825 | } |
2dc2558e | 3826 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3827 | } |
3828 | ||
9e353e3b | 3829 | PerlIO * |
14a5cf38 JH |
3830 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3831 | IV n, const char *mode, int fd, int imode, int perm, | |
3832 | PerlIO *f, int narg, SV **args) | |
3833 | { | |
04892f78 | 3834 | if (PerlIOValid(f)) { |
14a5cf38 | 3835 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3836 | PerlIO_funcs *tab = |
3837 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3838 | if (tab && tab->Open) | |
3839 | next = | |
3840 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3841 | next, narg, args); | |
2dc2558e | 3842 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3843 | return NULL; |
3844 | } | |
3845 | } | |
3846 | else { | |
04892f78 | 3847 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3848 | int init = 0; |
3b6c1aba | 3849 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3850 | init = 1; |
3851 | /* | |
71200d45 | 3852 | * mode++; |
14a5cf38 JH |
3853 | */ |
3854 | } | |
67363c0d JH |
3855 | if (tab && tab->Open) |
3856 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3857 | f, narg, args); | |
3858 | else | |
3859 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3860 | if (f) { |
22569500 | 3861 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3862 | /* |
3863 | * if push fails during open, open fails. close will pop us. | |
3864 | */ | |
3865 | PerlIO_close (f); | |
3866 | return NULL; | |
3867 | } else { | |
3868 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3869 | if (init && fd == 2) { |
3870 | /* | |
3871 | * Initial stderr is unbuffered | |
3872 | */ | |
3873 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3874 | } | |
23b84778 IZ |
3875 | #ifdef PERLIO_USING_CRLF |
3876 | # ifdef PERLIO_IS_BINMODE_FD | |
3877 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3878 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3879 | else |
3880 | # endif | |
3881 | /* | |
3882 | * do something about failing setmode()? --jhi | |
3883 | */ | |
3884 | PerlLIO_setmode(fd, O_BINARY); | |
3885 | #endif | |
8c8488cd | 3886 | #ifdef VMS |
8c8488cd CB |
3887 | /* Enable line buffering with record-oriented regular files |
3888 | * so we don't introduce an extraneous record boundary when | |
3889 | * the buffer fills up. | |
3890 | */ | |
3891 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3892 | Stat_t st; | |
3893 | if (PerlLIO_fstat(fd, &st) == 0 | |
3894 | && S_ISREG(st.st_mode) | |
3895 | && (st.st_fab_rfm == FAB$C_VAR | |
3896 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3897 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3898 | } | |
3899 | } | |
3900 | #endif | |
14a5cf38 JH |
3901 | } |
3902 | } | |
ee518936 | 3903 | } |
14a5cf38 | 3904 | return f; |
9e353e3b NIS |
3905 | } |
3906 | ||
14a5cf38 JH |
3907 | /* |
3908 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3909 | * read or write state. For write state, we put the postponed data through |
3910 | * the next layers. For read state, we seek() the next layers to the | |
3911 | * offset given by current position in the buffer, and discard the buffer | |
3912 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3913 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3914 | */ |
9e353e3b | 3915 | IV |
f62ce20a | 3916 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3917 | { |
dcda55fc | 3918 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3919 | int code = 0; |
04892f78 | 3920 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3921 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3922 | /* | |
71200d45 | 3923 | * write() the buffer |
14a5cf38 | 3924 | */ |
de009b76 AL |
3925 | const STDCHAR *buf = b->buf; |
3926 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3927 | while (p < b->ptr) { |
3928 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3929 | if (count > 0) { | |
3930 | p += count; | |
3931 | } | |
3932 | else if (count < 0 || PerlIO_error(n)) { | |
3933 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3934 | code = -1; | |
3935 | break; | |
3936 | } | |
3937 | } | |
3938 | b->posn += (p - buf); | |
3939 | } | |
3940 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3941 | STDCHAR *buf = PerlIO_get_base(f); | |
3942 | /* | |
71200d45 | 3943 | * Note position change |
14a5cf38 JH |
3944 | */ |
3945 | b->posn += (b->ptr - buf); | |
3946 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3947 | /* We did not consume all of it - try and seek downstream to |
3948 | our logical position | |
14a5cf38 | 3949 | */ |
4b069b44 | 3950 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3951 | /* Reload n as some layers may pop themselves on seek */ |
3952 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3953 | } |
ba5c3fe9 | 3954 | else { |
4b069b44 NIS |
3955 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3956 | data is lost for good - so return saying "ok" having undone | |
3957 | the position adjust | |
3958 | */ | |
3959 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3960 | return code; |
3961 | } | |
14a5cf38 JH |
3962 | } |
3963 | } | |
3964 | b->ptr = b->end = b->buf; | |
3965 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3966 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3967 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3968 | code = -1; |
3969 | return code; | |
6f9d8c32 NIS |
3970 | } |
3971 | ||
93c2c2ec IZ |
3972 | /* This discards the content of the buffer after b->ptr, and rereads |
3973 | * the buffer from the position off in the layer downstream; here off | |
3974 | * is at offset corresponding to b->ptr - b->buf. | |
3975 | */ | |
06da4f11 | 3976 | IV |
f62ce20a | 3977 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3978 | { |
dcda55fc | 3979 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3980 | PerlIO *n = PerlIONext(f); |
3981 | SSize_t avail; | |
3982 | /* | |
4b069b44 NIS |
3983 | * Down-stream flush is defined not to loose read data so is harmless. |
3984 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3985 | */ |
93c2c2ec | 3986 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3987 | return -1; |
3988 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3989 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3990 | |
3991 | if (!b->buf) | |
22569500 | 3992 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3993 | |
0f0eef27 | 3994 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3995 | |
14a5cf38 | 3996 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3997 | |
3998 | if (!PerlIOValid(n)) { | |
3999 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4000 | return -1; | |
4001 | } | |
4002 | ||
14a5cf38 JH |
4003 | if (PerlIO_fast_gets(n)) { |
4004 | /* | |
04892f78 | 4005 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4006 | * ->Read() because that will loop till it gets what we asked for |
4007 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4008 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4009 | */ |
4010 | avail = PerlIO_get_cnt(n); | |
4011 | if (avail <= 0) { | |
4012 | avail = PerlIO_fill(n); | |
4013 | if (avail == 0) | |
4014 | avail = PerlIO_get_cnt(n); | |
4015 | else { | |
4016 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4017 | avail = 0; | |
4018 | } | |
4019 | } | |
4020 | if (avail > 0) { | |
4021 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4022 | const SSize_t cnt = avail; |
eb160463 | 4023 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4024 | avail = b->bufsiz; |
4025 | Copy(ptr, b->buf, avail, STDCHAR); | |
4026 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4027 | } | |
4028 | } | |
4029 | else { | |
4030 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4031 | } | |
4032 | if (avail <= 0) { | |
4033 | if (avail == 0) | |
4034 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4035 | else | |
4036 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
4037 | return -1; | |
4038 | } | |
4039 | b->end = b->buf + avail; | |
4040 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4041 | return 0; | |
06da4f11 NIS |
4042 | } |
4043 | ||
6f9d8c32 | 4044 | SSize_t |
f62ce20a | 4045 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4046 | { |
04892f78 | 4047 | if (PerlIOValid(f)) { |
dcda55fc | 4048 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4049 | if (!b->ptr) |
4050 | PerlIO_get_base(f); | |
f62ce20a | 4051 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4052 | } |
4053 | return 0; | |
6f9d8c32 NIS |
4054 | } |
4055 | ||
9e353e3b | 4056 | SSize_t |
f62ce20a | 4057 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4058 | { |
14a5cf38 | 4059 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4060 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4061 | SSize_t unread = 0; |
4062 | SSize_t avail; | |
4063 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4064 | PerlIO_flush(f); | |
4065 | if (!b->buf) | |
4066 | PerlIO_get_base(f); | |
4067 | if (b->buf) { | |
4068 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4069 | /* | |
4070 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4071 | * which have been read back to buffer start |
14a5cf38 JH |
4072 | */ |
4073 | avail = (b->ptr - b->buf); | |
4074 | } | |
4075 | else { | |
4076 | /* | |
4077 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4078 | * unread |
14a5cf38 JH |
4079 | */ |
4080 | avail = b->bufsiz; | |
4081 | b->end = b->buf + avail; | |
4082 | b->ptr = b->end; | |
4083 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4084 | /* | |
71200d45 | 4085 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4086 | */ |
4087 | b->posn -= b->bufsiz; | |
4088 | } | |
4089 | if (avail > (SSize_t) count) { | |
4090 | /* | |
71200d45 | 4091 | * If we have space for more than count, just move count |
14a5cf38 JH |
4092 | */ |
4093 | avail = count; | |
4094 | } | |
4095 | if (avail > 0) { | |
4096 | b->ptr -= avail; | |
4097 | buf -= avail; | |
4098 | /* | |
4099 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4100 | * there |
14a5cf38 JH |
4101 | */ |
4102 | if (buf != b->ptr) { | |
4103 | Copy(buf, b->ptr, avail, STDCHAR); | |
4104 | } | |
4105 | count -= avail; | |
4106 | unread += avail; | |
4107 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4108 | } | |
4109 | } | |
93679785 NIS |
4110 | if (count > 0) { |
4111 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4112 | } | |
14a5cf38 | 4113 | return unread; |
760ac839 LW |
4114 | } |
4115 | ||
9e353e3b | 4116 | SSize_t |
f62ce20a | 4117 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4118 | { |
de009b76 | 4119 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4120 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4121 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4122 | Size_t written = 0; |
4123 | if (!b->buf) | |
4124 | PerlIO_get_base(f); | |
4125 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4126 | return 0; | |
0678cb22 NIS |
4127 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4128 | if (PerlIO_flush(f) != 0) { | |
4129 | return 0; | |
4130 | } | |
4131 | } | |
ee56a6b9 CS |
4132 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4133 | flushptr = buf + count; | |
4134 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4135 | --flushptr; | |
4136 | } | |
14a5cf38 JH |
4137 | while (count > 0) { |
4138 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
4139 | if ((SSize_t) count < avail) | |
4140 | avail = count; | |
ee56a6b9 CS |
4141 | if (flushptr > buf && flushptr <= buf + avail) |
4142 | avail = flushptr - buf; | |
14a5cf38 | 4143 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4144 | if (avail) { |
4145 | Copy(buf, b->ptr, avail, STDCHAR); | |
4146 | count -= avail; | |
4147 | buf += avail; | |
4148 | written += avail; | |
4149 | b->ptr += avail; | |
4150 | if (buf == flushptr) | |
4151 | PerlIO_flush(f); | |
14a5cf38 JH |
4152 | } |
4153 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4154 | if (PerlIO_flush(f) == -1) |
4155 | return -1; | |
14a5cf38 JH |
4156 | } |
4157 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4158 | PerlIO_flush(f); | |
4159 | return written; | |
9e353e3b NIS |
4160 | } |
4161 | ||
94a175e1 | 4162 | IV |
f62ce20a | 4163 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4164 | { |
14a5cf38 JH |
4165 | IV code; |
4166 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4167 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4168 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4169 | if (code == 0) { | |
de009b76 | 4170 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4171 | b->posn = PerlIO_tell(PerlIONext(f)); |
4172 | } | |
9e353e3b | 4173 | } |
14a5cf38 | 4174 | return code; |
9e353e3b NIS |
4175 | } |
4176 | ||
4177 | Off_t | |
f62ce20a | 4178 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4179 | { |
dcda55fc | 4180 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4181 | /* |
71200d45 | 4182 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4183 | */ |
4184 | Off_t posn = b->posn; | |
37725cdc | 4185 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4186 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4187 | #if 1 | |
4188 | /* As O_APPEND files are normally shared in some sense it is better | |
4189 | to flush : | |
4190 | */ | |
4191 | PerlIO_flush(f); | |
4192 | #else | |
37725cdc | 4193 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4194 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4195 | #endif | |
4196 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4197 | } | |
14a5cf38 JH |
4198 | if (b->buf) { |
4199 | /* | |
71200d45 | 4200 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4201 | */ |
4202 | posn += (b->ptr - b->buf); | |
4203 | } | |
4204 | return posn; | |
9e353e3b NIS |
4205 | } |
4206 | ||
4207 | IV | |
44798d05 NIS |
4208 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4209 | { | |
de009b76 AL |
4210 | const IV code = PerlIOBase_popped(aTHX_ f); |
4211 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4212 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4213 | Safefree(b->buf); | |
4214 | } | |
dcda55fc | 4215 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4216 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4217 | return code; | |
4218 | } | |
4219 | ||
4220 | IV | |
f62ce20a | 4221 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4222 | { |
de009b76 AL |
4223 | const IV code = PerlIOBase_close(aTHX_ f); |
4224 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4225 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4226 | Safefree(b->buf); |
14a5cf38 | 4227 | } |
dcda55fc | 4228 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4229 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4230 | return code; | |
760ac839 LW |
4231 | } |
4232 | ||
9e353e3b | 4233 | STDCHAR * |
f62ce20a | 4234 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4235 | { |
dcda55fc | 4236 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4237 | if (!b->buf) |
4238 | PerlIO_get_base(f); | |
4239 | return b->ptr; | |
9e353e3b NIS |
4240 | } |
4241 | ||
05d1247b | 4242 | SSize_t |
f62ce20a | 4243 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4244 | { |
dcda55fc | 4245 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4246 | if (!b->buf) |
4247 | PerlIO_get_base(f); | |
4248 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4249 | return (b->end - b->ptr); | |
4250 | return 0; | |
9e353e3b NIS |
4251 | } |
4252 | ||
4253 | STDCHAR * | |
f62ce20a | 4254 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4255 | { |
dcda55fc | 4256 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4257 | PERL_UNUSED_CONTEXT; |
4258 | ||
14a5cf38 JH |
4259 | if (!b->buf) { |
4260 | if (!b->bufsiz) | |
1810cd7c | 4261 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4262 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4263 | if (!b->buf) { |
4264 | b->buf = (STDCHAR *) & b->oneword; | |
4265 | b->bufsiz = sizeof(b->oneword); | |
4266 | } | |
dcda55fc | 4267 | b->end = b->ptr = b->buf; |
06da4f11 | 4268 | } |
14a5cf38 | 4269 | return b->buf; |
9e353e3b NIS |
4270 | } |
4271 | ||
4272 | Size_t | |
f62ce20a | 4273 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4274 | { |
dcda55fc | 4275 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4276 | if (!b->buf) |
4277 | PerlIO_get_base(f); | |
4278 | return (b->end - b->buf); | |
9e353e3b NIS |
4279 | } |
4280 | ||
4281 | void | |
f62ce20a | 4282 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4283 | { |
dcda55fc | 4284 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4285 | #ifndef DEBUGGING |
4286 | PERL_UNUSED_ARG(cnt); | |
4287 | #endif | |
14a5cf38 JH |
4288 | if (!b->buf) |
4289 | PerlIO_get_base(f); | |
4290 | b->ptr = ptr; | |
b727803b RGS |
4291 | assert(PerlIO_get_cnt(f) == cnt); |
4292 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4293 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4294 | } |
4295 | ||
71200d45 | 4296 | PerlIO * |
ecdeb87c | 4297 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4298 | { |
ecdeb87c | 4299 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4300 | } |
4301 | ||
4302 | ||
4303 | ||
27da23d5 | 4304 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4305 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4306 | "perlio", |
4307 | sizeof(PerlIOBuf), | |
86e05cf2 | 4308 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4309 | PerlIOBuf_pushed, |
44798d05 | 4310 | PerlIOBuf_popped, |
14a5cf38 | 4311 | PerlIOBuf_open, |
86e05cf2 | 4312 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4313 | NULL, |
4314 | PerlIOBase_fileno, | |
71200d45 | 4315 | PerlIOBuf_dup, |
14a5cf38 JH |
4316 | PerlIOBuf_read, |
4317 | PerlIOBuf_unread, | |
4318 | PerlIOBuf_write, | |
4319 | PerlIOBuf_seek, | |
4320 | PerlIOBuf_tell, | |
4321 | PerlIOBuf_close, | |
4322 | PerlIOBuf_flush, | |
4323 | PerlIOBuf_fill, | |
4324 | PerlIOBase_eof, | |
4325 | PerlIOBase_error, | |
4326 | PerlIOBase_clearerr, | |
4327 | PerlIOBase_setlinebuf, | |
4328 | PerlIOBuf_get_base, | |
4329 | PerlIOBuf_bufsiz, | |
4330 | PerlIOBuf_get_ptr, | |
4331 | PerlIOBuf_get_cnt, | |
4332 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4333 | }; |
4334 | ||
66ecd56b | 4335 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4336 | /* |
71200d45 | 4337 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4338 | */ |
5e2ab84b NIS |
4339 | |
4340 | IV | |
f62ce20a | 4341 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4342 | { |
14a5cf38 | 4343 | /* |
71200d45 | 4344 | * Should never happen |
14a5cf38 JH |
4345 | */ |
4346 | PerlIO_flush(f); | |
4347 | return 0; | |
5e2ab84b NIS |
4348 | } |
4349 | ||
4350 | IV | |
f62ce20a | 4351 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4352 | { |
14a5cf38 | 4353 | /* |
71200d45 | 4354 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4355 | */ |
4356 | PerlIO_flush(f); | |
4357 | return PerlIO_close(f); | |
5e2ab84b NIS |
4358 | } |
4359 | ||
94a175e1 | 4360 | IV |
f62ce20a | 4361 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4362 | { |
14a5cf38 | 4363 | /* |
71200d45 | 4364 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4365 | */ |
4366 | PerlIO_flush(f); | |
4367 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4368 | } |
4369 | ||
4370 | ||
4371 | IV | |
f62ce20a | 4372 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4373 | { |
dcda55fc | 4374 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4375 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4376 | Safefree(b->buf); |
14a5cf38 JH |
4377 | b->buf = NULL; |
4378 | } | |
4379 | PerlIO_pop(aTHX_ f); | |
4380 | return 0; | |
5e2ab84b NIS |
4381 | } |
4382 | ||
4383 | void | |
f62ce20a | 4384 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4385 | { |
14a5cf38 JH |
4386 | if (cnt <= 0) { |
4387 | PerlIO_flush(f); | |
4388 | } | |
4389 | else { | |
f62ce20a | 4390 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4391 | } |
5e2ab84b NIS |
4392 | } |
4393 | ||
4394 | IV | |
2dc2558e | 4395 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4396 | { |
de009b76 | 4397 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4398 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4399 | /* |
71200d45 NIS |
4400 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4401 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4402 | */ |
4403 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4404 | (PerlIOBase(PerlIONext(f))-> | |
4405 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4406 | return code; | |
5e2ab84b NIS |
4407 | } |
4408 | ||
4409 | SSize_t | |
f62ce20a | 4410 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4411 | { |
14a5cf38 JH |
4412 | SSize_t avail = PerlIO_get_cnt(f); |
4413 | SSize_t got = 0; | |
eb160463 | 4414 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4415 | avail = count; |
4416 | if (avail > 0) | |
f62ce20a | 4417 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4418 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4419 | const SSize_t more = |
14a5cf38 JH |
4420 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4421 | if (more >= 0 || got == 0) | |
4422 | got += more; | |
4423 | } | |
4424 | return got; | |
5e2ab84b NIS |
4425 | } |
4426 | ||
27da23d5 | 4427 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4428 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4429 | "pending", |
4430 | sizeof(PerlIOBuf), | |
86e05cf2 | 4431 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4432 | PerlIOPending_pushed, |
44798d05 | 4433 | PerlIOBuf_popped, |
14a5cf38 | 4434 | NULL, |
86e05cf2 | 4435 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4436 | NULL, |
4437 | PerlIOBase_fileno, | |
71200d45 | 4438 | PerlIOBuf_dup, |
14a5cf38 JH |
4439 | PerlIOPending_read, |
4440 | PerlIOBuf_unread, | |
4441 | PerlIOBuf_write, | |
4442 | PerlIOPending_seek, | |
4443 | PerlIOBuf_tell, | |
4444 | PerlIOPending_close, | |
4445 | PerlIOPending_flush, | |
4446 | PerlIOPending_fill, | |
4447 | PerlIOBase_eof, | |
4448 | PerlIOBase_error, | |
4449 | PerlIOBase_clearerr, | |
4450 | PerlIOBase_setlinebuf, | |
4451 | PerlIOBuf_get_base, | |
4452 | PerlIOBuf_bufsiz, | |
4453 | PerlIOBuf_get_ptr, | |
4454 | PerlIOBuf_get_cnt, | |
4455 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4456 | }; |
4457 | ||
4458 | ||
4459 | ||
4460 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4461 | /* |
4462 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4463 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4464 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4465 | * |
4466 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4467 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4468 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4469 | * that it ends at c->nl; these two cases can be distinguished by | |
4470 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4471 | * _unread() and _flush() calls. | |
4472 | * It only matters for read operations. | |
66ecd56b NIS |
4473 | */ |
4474 | ||
14a5cf38 | 4475 | typedef struct { |
22569500 NIS |
4476 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4477 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4478 | * buffer */ |
99efab12 NIS |
4479 | } PerlIOCrlf; |
4480 | ||
ff1e3883 JD |
4481 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4482 | * Otherwise the :crlf layer would always revert back to | |
4483 | * raw mode. | |
4484 | */ | |
4485 | static void | |
4486 | S_inherit_utf8_flag(PerlIO *f) | |
4487 | { | |
4488 | PerlIO *g = PerlIONext(f); | |
4489 | if (PerlIOValid(g)) { | |
4490 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4491 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4492 | } | |
4493 | } | |
4494 | } | |
4495 | ||
f5b9d040 | 4496 | IV |
2dc2558e | 4497 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4498 | { |
14a5cf38 JH |
4499 | IV code; |
4500 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4501 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4502 | #if 0 |
14a5cf38 | 4503 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4504 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4505 | PerlIOBase(f)->flags); |
5e2ab84b | 4506 | #endif |
8229d19f | 4507 | { |
5da08ab0 LT |
4508 | /* If the old top layer is a CRLF layer, reactivate it (if |
4509 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4510 | PerlIO *g = PerlIONext(f); |
7826b36f | 4511 | if (PerlIOValid(g)) { |
8229d19f JH |
4512 | PerlIOl *b = PerlIOBase(g); |
4513 | if (b && b->tab == &PerlIO_crlf) { | |
4514 | if (!(b->flags & PERLIO_F_CRLF)) | |
4515 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4516 | S_inherit_utf8_flag(g); |
8229d19f JH |
4517 | PerlIO_pop(aTHX_ f); |
4518 | return code; | |
7826b36f | 4519 | } |
8229d19f JH |
4520 | } |
4521 | } | |
ff1e3883 | 4522 | S_inherit_utf8_flag(f); |
14a5cf38 | 4523 | return code; |
f5b9d040 NIS |
4524 | } |
4525 | ||
4526 | ||
99efab12 | 4527 | SSize_t |
f62ce20a | 4528 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4529 | { |
dcda55fc | 4530 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4531 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4532 | *(c->nl) = 0xd; |
4533 | c->nl = NULL; | |
4534 | } | |
4535 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4536 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4537 | else { |
4538 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4539 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4540 | SSize_t unread = 0; | |
4541 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4542 | PerlIO_flush(f); | |
4543 | if (!b->buf) | |
4544 | PerlIO_get_base(f); | |
4545 | if (b->buf) { | |
4546 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4547 | b->end = b->ptr = b->buf + b->bufsiz; | |
4548 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4549 | b->posn -= b->bufsiz; | |
4550 | } | |
4551 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4552 | const int ch = *--buf; |
14a5cf38 JH |
4553 | if (ch == '\n') { |
4554 | if (b->ptr - 2 >= b->buf) { | |
4555 | *--(b->ptr) = 0xa; | |
4556 | *--(b->ptr) = 0xd; | |
4557 | unread++; | |
4558 | count--; | |
4559 | } | |
4560 | else { | |
93c2c2ec IZ |
4561 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4562 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4563 | unread++; | |
4564 | count--; | |
14a5cf38 JH |
4565 | } |
4566 | } | |
4567 | else { | |
4568 | *--(b->ptr) = ch; | |
4569 | unread++; | |
4570 | count--; | |
4571 | } | |
4572 | } | |
4573 | } | |
4574 | return unread; | |
4575 | } | |
99efab12 NIS |
4576 | } |
4577 | ||
93c2c2ec | 4578 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4579 | SSize_t |
f62ce20a | 4580 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4581 | { |
dcda55fc | 4582 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4583 | if (!b->buf) |
4584 | PerlIO_get_base(f); | |
4585 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4586 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4587 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4588 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4589 | scan: |
4590 | while (nl < b->end && *nl != 0xd) | |
4591 | nl++; | |
4592 | if (nl < b->end && *nl == 0xd) { | |
4593 | test: | |
4594 | if (nl + 1 < b->end) { | |
4595 | if (nl[1] == 0xa) { | |
4596 | *nl = '\n'; | |
4597 | c->nl = nl; | |
4598 | } | |
4599 | else { | |
4600 | /* | |
71200d45 | 4601 | * Not CR,LF but just CR |
14a5cf38 JH |
4602 | */ |
4603 | nl++; | |
4604 | goto scan; | |
4605 | } | |
4606 | } | |
4607 | else { | |
4608 | /* | |
71200d45 | 4609 | * Blast - found CR as last char in buffer |
14a5cf38 | 4610 | */ |
e87a358a | 4611 | |
14a5cf38 JH |
4612 | if (b->ptr < nl) { |
4613 | /* | |
4614 | * They may not care, defer work as long as | |
71200d45 | 4615 | * possible |
14a5cf38 | 4616 | */ |
a0d1d361 | 4617 | c->nl = nl; |
14a5cf38 JH |
4618 | return (nl - b->ptr); |
4619 | } | |
4620 | else { | |
4621 | int code; | |
22569500 | 4622 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4623 | * flush() is concerned */ |
22569500 | 4624 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4625 | /* Note as we have moved buf up flush's |
4626 | posn += ptr-buf | |
4627 | will naturally make posn point at CR | |
4628 | */ | |
22569500 NIS |
4629 | b->bufsiz--; /* Buffer is thus smaller */ |
4630 | code = PerlIO_fill(f); /* Fetch some more */ | |
4631 | b->bufsiz++; /* Restore size for next time */ | |
4632 | b->buf--; /* Point at space */ | |
4633 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4634 | * off */ |
22569500 | 4635 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4636 | if (code == 0) |
22569500 | 4637 | goto test; /* fill() call worked */ |
14a5cf38 | 4638 | /* |
71200d45 | 4639 | * CR at EOF - just fall through |
14a5cf38 | 4640 | */ |
a0d1d361 | 4641 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4642 | } |
4643 | } | |
4644 | } | |
4645 | } | |
4646 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4647 | } | |
4648 | return 0; | |
99efab12 NIS |
4649 | } |
4650 | ||
4651 | void | |
f62ce20a | 4652 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4653 | { |
dcda55fc AL |
4654 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4655 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4656 | if (!b->buf) |
4657 | PerlIO_get_base(f); | |
4658 | if (!ptr) { | |
a0d1d361 | 4659 | if (c->nl) { |
14a5cf38 | 4660 | ptr = c->nl + 1; |
22569500 | 4661 | if (ptr == b->end && *c->nl == 0xd) { |
486ec47a | 4662 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4663 | ptr--; |
4664 | } | |
4665 | } | |
14a5cf38 JH |
4666 | else { |
4667 | ptr = b->end; | |
14a5cf38 JH |
4668 | } |
4669 | ptr -= cnt; | |
4670 | } | |
4671 | else { | |
6f207bd3 | 4672 | NOOP; |
3b4bd3fd | 4673 | #if 0 |
14a5cf38 | 4674 | /* |
71200d45 | 4675 | * Test code - delete when it works ... |
14a5cf38 | 4676 | */ |
3b4bd3fd | 4677 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4678 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4679 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
486ec47a | 4680 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4681 | chk--; |
22569500 | 4682 | } |
14a5cf38 JH |
4683 | chk -= cnt; |
4684 | ||
a0d1d361 | 4685 | if (ptr != chk ) { |
99ef548b | 4686 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4687 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4688 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4689 | } |
99ef548b | 4690 | #endif |
14a5cf38 JH |
4691 | } |
4692 | if (c->nl) { | |
4693 | if (ptr > c->nl) { | |
4694 | /* | |
71200d45 | 4695 | * They have taken what we lied about |
14a5cf38 JH |
4696 | */ |
4697 | *(c->nl) = 0xd; | |
4698 | c->nl = NULL; | |
4699 | ptr++; | |
4700 | } | |
4701 | } | |
4702 | b->ptr = ptr; | |
4703 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4704 | } |
4705 | ||
4706 | SSize_t | |
f62ce20a | 4707 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4708 | { |
14a5cf38 | 4709 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4710 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4711 | else { |
dcda55fc | 4712 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4713 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4714 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4715 | if (!b->buf) |
4716 | PerlIO_get_base(f); | |
4717 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4718 | return 0; | |
4719 | while (buf < ebuf) { | |
dcda55fc | 4720 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4721 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4722 | while (buf < ebuf && b->ptr < eptr) { | |
4723 | if (*buf == '\n') { | |
4724 | if ((b->ptr + 2) > eptr) { | |
4725 | /* | |
71200d45 | 4726 | * Not room for both |
14a5cf38 JH |
4727 | */ |
4728 | PerlIO_flush(f); | |
4729 | break; | |
4730 | } | |
4731 | else { | |
22569500 NIS |
4732 | *(b->ptr)++ = 0xd; /* CR */ |
4733 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4734 | buf++; |
4735 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4736 | PerlIO_flush(f); | |
4737 | break; | |
4738 | } | |
4739 | } | |
4740 | } | |
4741 | else { | |
dcda55fc | 4742 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4743 | } |
4744 | if (b->ptr >= eptr) { | |
4745 | PerlIO_flush(f); | |
4746 | break; | |
4747 | } | |
4748 | } | |
4749 | } | |
4750 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4751 | PerlIO_flush(f); | |
4752 | return (buf - (STDCHAR *) vbuf); | |
4753 | } | |
99efab12 NIS |
4754 | } |
4755 | ||
4756 | IV | |
f62ce20a | 4757 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4758 | { |
dcda55fc | 4759 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4760 | if (c->nl) { |
4761 | *(c->nl) = 0xd; | |
4762 | c->nl = NULL; | |
4763 | } | |
f62ce20a | 4764 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4765 | } |
4766 | ||
86e05cf2 NIS |
4767 | IV |
4768 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4769 | { | |
4770 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4771 | /* In text mode - flush any pending stuff and flip it */ | |
4772 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4773 | #ifndef PERLIO_USING_CRLF | |
4774 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4775 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4776 | #endif |
4777 | } | |
4778 | return 0; | |
4779 | } | |
4780 | ||
27da23d5 | 4781 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4782 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4783 | "crlf", |
4784 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4785 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4786 | PerlIOCrlf_pushed, |
44798d05 | 4787 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4788 | PerlIOBuf_open, |
86e05cf2 | 4789 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4790 | NULL, |
4791 | PerlIOBase_fileno, | |
71200d45 | 4792 | PerlIOBuf_dup, |
de009b76 | 4793 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4794 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4795 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4796 | PerlIOBuf_seek, |
4797 | PerlIOBuf_tell, | |
4798 | PerlIOBuf_close, | |
4799 | PerlIOCrlf_flush, | |
4800 | PerlIOBuf_fill, | |
4801 | PerlIOBase_eof, | |
4802 | PerlIOBase_error, | |
4803 | PerlIOBase_clearerr, | |
4804 | PerlIOBase_setlinebuf, | |
4805 | PerlIOBuf_get_base, | |
4806 | PerlIOBuf_bufsiz, | |
4807 | PerlIOBuf_get_ptr, | |
4808 | PerlIOCrlf_get_cnt, | |
4809 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4810 | }; |
4811 | ||
9e353e3b | 4812 | PerlIO * |
e87a358a | 4813 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4814 | { |
97aff369 | 4815 | dVAR; |
a1ea730d | 4816 | if (!PL_perlio) { |
14a5cf38 JH |
4817 | PerlIO_stdstreams(aTHX); |
4818 | } | |
303f2dc3 | 4819 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4820 | } |
4821 | ||
9e353e3b | 4822 | PerlIO * |
e87a358a | 4823 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4824 | { |
97aff369 | 4825 | dVAR; |
a1ea730d | 4826 | if (!PL_perlio) { |
14a5cf38 JH |
4827 | PerlIO_stdstreams(aTHX); |
4828 | } | |
303f2dc3 | 4829 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4830 | } |
4831 | ||
9e353e3b | 4832 | PerlIO * |
e87a358a | 4833 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4834 | { |
97aff369 | 4835 | dVAR; |
a1ea730d | 4836 | if (!PL_perlio) { |
14a5cf38 JH |
4837 | PerlIO_stdstreams(aTHX); |
4838 | } | |
303f2dc3 | 4839 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4840 | } |
4841 | ||
4842 | /*--------------------------------------------------------------------------------------*/ | |
4843 | ||
9e353e3b NIS |
4844 | char * |
4845 | PerlIO_getname(PerlIO *f, char *buf) | |
4846 | { | |
a15cef0c | 4847 | #ifdef VMS |
dbf7dff6 | 4848 | dTHX; |
73d840c0 | 4849 | char *name = NULL; |
7659f319 | 4850 | bool exported = FALSE; |
14a5cf38 | 4851 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4852 | if (!stdio) { |
4853 | stdio = PerlIO_exportFILE(f,0); | |
4854 | exported = TRUE; | |
4855 | } | |
4856 | if (stdio) { | |
14a5cf38 | 4857 | name = fgetname(stdio, buf); |
7659f319 CB |
4858 | if (exported) PerlIO_releaseFILE(f,stdio); |
4859 | } | |
73d840c0 | 4860 | return name; |
a15cef0c | 4861 | #else |
8772537c AL |
4862 | PERL_UNUSED_ARG(f); |
4863 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4864 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4865 | return NULL; |
a15cef0c | 4866 | #endif |
9e353e3b NIS |
4867 | } |
4868 | ||
4869 | ||
4870 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4871 | /* |
4872 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4873 | * terms of above |
14a5cf38 | 4874 | */ |
9e353e3b | 4875 | |
e87a358a NIS |
4876 | #undef PerlIO_fdopen |
4877 | PerlIO * | |
4878 | PerlIO_fdopen(int fd, const char *mode) | |
4879 | { | |
4880 | dTHX; | |
bd61b366 | 4881 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4882 | } |
4883 | ||
4884 | #undef PerlIO_open | |
4885 | PerlIO * | |
4886 | PerlIO_open(const char *path, const char *mode) | |
4887 | { | |
4888 | dTHX; | |
42d9b98d | 4889 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4890 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4891 | } |
4892 | ||
4893 | #undef Perlio_reopen | |
4894 | PerlIO * | |
4895 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4896 | { | |
4897 | dTHX; | |
42d9b98d | 4898 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4899 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4900 | } |
4901 | ||
9e353e3b | 4902 | #undef PerlIO_getc |
6f9d8c32 | 4903 | int |
9e353e3b | 4904 | PerlIO_getc(PerlIO *f) |
760ac839 | 4905 | { |
e87a358a | 4906 | dTHX; |
14a5cf38 | 4907 | STDCHAR buf[1]; |
de009b76 | 4908 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4909 | return (unsigned char) buf[0]; |
4910 | } | |
4911 | return EOF; | |
313ca112 NIS |
4912 | } |
4913 | ||
4914 | #undef PerlIO_ungetc | |
4915 | int | |
4916 | PerlIO_ungetc(PerlIO *f, int ch) | |
4917 | { | |
e87a358a | 4918 | dTHX; |
14a5cf38 JH |
4919 | if (ch != EOF) { |
4920 | STDCHAR buf = ch; | |
4921 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4922 | return ch; | |
4923 | } | |
4924 | return EOF; | |
760ac839 LW |
4925 | } |
4926 | ||
9e353e3b NIS |
4927 | #undef PerlIO_putc |
4928 | int | |
4929 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4930 | { |
e87a358a | 4931 | dTHX; |
14a5cf38 JH |
4932 | STDCHAR buf = ch; |
4933 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4934 | } |
4935 | ||
9e353e3b | 4936 | #undef PerlIO_puts |
760ac839 | 4937 | int |
9e353e3b | 4938 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4939 | { |
e87a358a | 4940 | dTHX; |
dcda55fc | 4941 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4942 | } |
4943 | ||
4944 | #undef PerlIO_rewind | |
4945 | void | |
c78749f2 | 4946 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4947 | { |
e87a358a | 4948 | dTHX; |
14a5cf38 JH |
4949 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4950 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4951 | } |
4952 | ||
4953 | #undef PerlIO_vprintf | |
4954 | int | |
4955 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4956 | { | |
14a5cf38 | 4957 | dTHX; |
53ce71d3 | 4958 | SV * sv; |
b83604b4 | 4959 | const char *s; |
14a5cf38 JH |
4960 | STRLEN len; |
4961 | SSize_t wrote; | |
2cc61e15 | 4962 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4963 | va_list apc; |
4964 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4965 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 4966 | #else |
53ce71d3 | 4967 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4968 | #endif |
b83604b4 | 4969 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4970 | wrote = PerlIO_write(f, s, len); |
4971 | SvREFCNT_dec(sv); | |
4972 | return wrote; | |
760ac839 LW |
4973 | } |
4974 | ||
4975 | #undef PerlIO_printf | |
6f9d8c32 | 4976 | int |
14a5cf38 | 4977 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4978 | { |
14a5cf38 JH |
4979 | va_list ap; |
4980 | int result; | |
4981 | va_start(ap, fmt); | |
4982 | result = PerlIO_vprintf(f, fmt, ap); | |
4983 | va_end(ap); | |
4984 | return result; | |
760ac839 LW |
4985 | } |
4986 | ||
4987 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4988 | int |
14a5cf38 | 4989 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4990 | { |
e87a358a | 4991 | dTHX; |
14a5cf38 JH |
4992 | va_list ap; |
4993 | int result; | |
4994 | va_start(ap, fmt); | |
4995 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
4996 | va_end(ap); | |
4997 | return result; | |
760ac839 LW |
4998 | } |
4999 | ||
5000 | #undef PerlIO_tmpfile | |
5001 | PerlIO * | |
c78749f2 | 5002 | PerlIO_tmpfile(void) |
760ac839 | 5003 | { |
dbf7dff6 | 5004 | #ifndef WIN32 |
2941a2e1 | 5005 | dTHX; |
dbf7dff6 | 5006 | #endif |
2941a2e1 | 5007 | PerlIO *f = NULL; |
2941a2e1 | 5008 | #ifdef WIN32 |
de009b76 | 5009 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5010 | if (fd >= 0) |
5011 | f = PerlIO_fdopen(fd, "w+b"); | |
5012 | #else /* WIN32 */ | |
460c8493 | 5013 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5014 | int fd = -1; |
5015 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 5016 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 5017 | SV * sv = NULL; |
2941a2e1 JH |
5018 | /* |
5019 | * I have no idea how portable mkstemp() is ... NI-S | |
5020 | */ | |
7299ca58 | 5021 | if (tmpdir && *tmpdir) { |
0b99e986 | 5022 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5023 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5024 | sv_catpv(sv, tempname + 4); |
5025 | fd = mkstemp(SvPVX(sv)); | |
5026 | } | |
5027 | if (fd < 0) { | |
7299ca58 | 5028 | sv = NULL; |
0b99e986 RGS |
5029 | /* else we try /tmp */ |
5030 | fd = mkstemp(tempname); | |
5031 | } | |
2941a2e1 JH |
5032 | if (fd >= 0) { |
5033 | f = PerlIO_fdopen(fd, "w+"); | |
5034 | if (f) | |
5035 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5036 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5037 | } |
ef8d46e8 | 5038 | SvREFCNT_dec(sv); |
2941a2e1 | 5039 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5040 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5041 | |
085e731f CB |
5042 | if (stdio) |
5043 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5044 | ||
2941a2e1 JH |
5045 | # endif /* else HAS_MKSTEMP */ |
5046 | #endif /* else WIN32 */ | |
5047 | return f; | |
760ac839 LW |
5048 | } |
5049 | ||
6f9d8c32 NIS |
5050 | #undef HAS_FSETPOS |
5051 | #undef HAS_FGETPOS | |
5052 | ||
22569500 NIS |
5053 | #endif /* USE_SFIO */ |
5054 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5055 | |
9e353e3b | 5056 | /*======================================================================================*/ |
14a5cf38 | 5057 | /* |
71200d45 NIS |
5058 | * Now some functions in terms of above which may be needed even if we are |
5059 | * not in true PerlIO mode | |
9e353e3b | 5060 | */ |
188f0c84 YO |
5061 | const char * |
5062 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5063 | { | |
5064 | dVAR; | |
8b850bd5 NC |
5065 | const char *direction = NULL; |
5066 | SV *layers; | |
188f0c84 YO |
5067 | /* |
5068 | * Need to supply default layer info from open.pm | |
5069 | */ | |
8b850bd5 NC |
5070 | |
5071 | if (!PL_curcop) | |
5072 | return NULL; | |
5073 | ||
5074 | if (mode && mode[0] != 'r') { | |
5075 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5076 | direction = "open>"; | |
5077 | } else { | |
5078 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5079 | direction = "open<"; | |
188f0c84 | 5080 | } |
8b850bd5 NC |
5081 | if (!direction) |
5082 | return NULL; | |
5083 | ||
20439bc7 | 5084 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5085 | |
5086 | assert(layers); | |
5087 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5088 | } |
5089 | ||
9e353e3b | 5090 | |
760ac839 LW |
5091 | #ifndef HAS_FSETPOS |
5092 | #undef PerlIO_setpos | |
5093 | int | |
766a733e | 5094 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5095 | { |
14a5cf38 JH |
5096 | if (SvOK(pos)) { |
5097 | STRLEN len; | |
2bcd6579 | 5098 | dTHX; |
c4420975 | 5099 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5100 | if (f && len == sizeof(Off_t)) |
5101 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5102 | } | |
93189314 | 5103 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5104 | return -1; |
760ac839 | 5105 | } |
c411622e | 5106 | #else |
c411622e | 5107 | #undef PerlIO_setpos |
5108 | int | |
766a733e | 5109 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5110 | { |
14a5cf38 JH |
5111 | dTHX; |
5112 | if (SvOK(pos)) { | |
5113 | STRLEN len; | |
c4420975 | 5114 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5115 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5116 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5117 | return fsetpos64(f, fpos); |
d9b3e12d | 5118 | #else |
14a5cf38 | 5119 | return fsetpos(f, fpos); |
d9b3e12d | 5120 | #endif |
14a5cf38 | 5121 | } |
766a733e | 5122 | } |
93189314 | 5123 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5124 | return -1; |
c411622e | 5125 | } |
5126 | #endif | |
760ac839 LW |
5127 | |
5128 | #ifndef HAS_FGETPOS | |
5129 | #undef PerlIO_getpos | |
5130 | int | |
766a733e | 5131 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5132 | { |
14a5cf38 JH |
5133 | dTHX; |
5134 | Off_t posn = PerlIO_tell(f); | |
5135 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5136 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5137 | } |
c411622e | 5138 | #else |
c411622e | 5139 | #undef PerlIO_getpos |
5140 | int | |
766a733e | 5141 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5142 | { |
14a5cf38 JH |
5143 | dTHX; |
5144 | Fpos_t fpos; | |
5145 | int code; | |
2d4389e4 | 5146 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5147 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5148 | #else |
14a5cf38 | 5149 | code = fgetpos(f, &fpos); |
d9b3e12d | 5150 | #endif |
14a5cf38 JH |
5151 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5152 | return code; | |
c411622e | 5153 | } |
5154 | #endif | |
760ac839 LW |
5155 | |
5156 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5157 | ||
5158 | int | |
c78749f2 | 5159 | vprintf(char *pat, char *args) |
662a7e3f CS |
5160 | { |
5161 | _doprnt(pat, args, stdout); | |
22569500 | 5162 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5163 | * value */ |
662a7e3f CS |
5164 | } |
5165 | ||
5166 | int | |
c78749f2 | 5167 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5168 | { |
5169 | _doprnt(pat, args, fd); | |
22569500 | 5170 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5171 | * value */ |
760ac839 LW |
5172 | } |
5173 | ||
5174 | #endif | |
5175 | ||
5176 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5177 | int |
8ac85365 | 5178 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5179 | { |
8ff9a42b | 5180 | dTHX; |
d9fad198 | 5181 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5182 | PERL_UNUSED_CONTEXT; |
5183 | ||
1208b3dd JH |
5184 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5185 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5186 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5187 | } |
1208b3dd | 5188 | #endif |
14a5cf38 | 5189 | return val; |
760ac839 LW |
5190 | } |
5191 | #endif | |
5192 | ||
5193 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5194 | int |
14a5cf38 | 5195 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5196 | { |
14a5cf38 JH |
5197 | va_list ap; |
5198 | int result; | |
5199 | va_start(ap, fmt); | |
5200 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5201 | va_end(ap); | |
5202 | return result; | |
760ac839 LW |
5203 | } |
5204 | #endif | |
9cfa90c0 NC |
5205 | |
5206 | /* | |
5207 | * Local variables: | |
5208 | * c-indentation-style: bsd | |
5209 | * c-basic-offset: 4 | |
14d04a33 | 5210 | * indent-tabs-mode: nil |
9cfa90c0 NC |
5211 | * End: |
5212 | * | |
14d04a33 | 5213 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5214 | */ |