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; |
ba90859e NC |
814 | const STRLEN this_len = strlen(f->name); |
815 | if (this_len == len && memEQ(f->name, name, len)) { | |
fe5a182c | 816 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
817 | return f; |
818 | } | |
819 | } | |
3a1ee7e8 NIS |
820 | if (load && PL_subname && PL_def_layerlist |
821 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
822 | if (PL_in_load_module) { |
823 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
824 | return NULL; | |
825 | } else { | |
396482e1 | 826 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 827 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 828 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 829 | ENTER; |
4fa7c2bf | 830 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 831 | if (cv) { |
9cfa90c0 | 832 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 833 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 834 | } |
4fa7c2bf | 835 | PL_in_load_module = TRUE; |
d7a09b41 SR |
836 | /* |
837 | * The two SVs are magically freed by load_module | |
838 | */ | |
a0714e2c | 839 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
840 | LEAVE; |
841 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
842 | } | |
14a5cf38 JH |
843 | } |
844 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
845 | return NULL; | |
f3862f8b NIS |
846 | } |
847 | ||
2a1bc955 | 848 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
849 | |
850 | static int | |
851 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
852 | { | |
14a5cf38 | 853 | if (SvROK(sv)) { |
159b6efe | 854 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
855 | PerlIO * const ifp = IoIFP(io); |
856 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
857 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
858 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
859 | } |
860 | return 0; | |
b13b2135 NIS |
861 | } |
862 | ||
863 | static int | |
864 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
865 | { | |
14a5cf38 | 866 | if (SvROK(sv)) { |
159b6efe | 867 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
868 | PerlIO * const ifp = IoIFP(io); |
869 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
870 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
871 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
872 | } |
873 | return 0; | |
b13b2135 NIS |
874 | } |
875 | ||
876 | static int | |
877 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
878 | { | |
be2597df | 879 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 880 | return 0; |
b13b2135 NIS |
881 | } |
882 | ||
883 | static int | |
884 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
885 | { | |
be2597df | 886 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 887 | return 0; |
b13b2135 NIS |
888 | } |
889 | ||
890 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
891 | perlio_mg_get, |
892 | perlio_mg_set, | |
22569500 | 893 | NULL, /* len */ |
14a5cf38 JH |
894 | perlio_mg_clear, |
895 | perlio_mg_free | |
b13b2135 NIS |
896 | }; |
897 | ||
898 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
899 | { | |
14a5cf38 | 900 | dXSARGS; |
dcda55fc AL |
901 | SV * const sv = SvRV(ST(1)); |
902 | AV * const av = newAV(); | |
14a5cf38 JH |
903 | MAGIC *mg; |
904 | int count = 0; | |
905 | int i; | |
ad64d0ec | 906 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
907 | SvRMAGICAL_off(sv); |
908 | mg = mg_find(sv, PERL_MAGIC_ext); | |
909 | mg->mg_virtual = &perlio_vtab; | |
910 | mg_magical(sv); | |
be2597df | 911 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
912 | for (i = 2; i < items; i++) { |
913 | STRLEN len; | |
dcda55fc AL |
914 | const char * const name = SvPV_const(ST(i), len); |
915 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 916 | if (layer) { |
b37c2d43 | 917 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
918 | } |
919 | else { | |
920 | ST(count) = ST(i); | |
921 | count++; | |
922 | } | |
923 | } | |
924 | SvREFCNT_dec(av); | |
925 | XSRETURN(count); | |
926 | } | |
927 | ||
22569500 | 928 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 929 | |
e3f3bf95 NIS |
930 | SV * |
931 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 932 | { |
da51bb9b | 933 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 934 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 935 | return sv; |
e3f3bf95 NIS |
936 | } |
937 | ||
5ca1d77f | 938 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 939 | { |
486ec47a | 940 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
941 | during loading of layers. |
942 | */ | |
97aff369 | 943 | dVAR; |
c9bca74a | 944 | dXSARGS; |
58c0efa5 | 945 | PERL_UNUSED_ARG(cv); |
c9bca74a | 946 | if (items) |
e62f0680 | 947 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
948 | XSRETURN(0); |
949 | } | |
950 | ||
5ca1d77f | 951 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 952 | { |
97aff369 | 953 | dVAR; |
14a5cf38 | 954 | dXSARGS; |
58c0efa5 | 955 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
956 | if (items < 2) |
957 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
958 | else { | |
de009b76 | 959 | STRLEN len; |
46c461b5 | 960 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 961 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 962 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
963 | ST(0) = |
964 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
965 | &PL_sv_undef; | |
966 | XSRETURN(1); | |
967 | } | |
0c4f7ff0 NIS |
968 | } |
969 | ||
e3f3bf95 NIS |
970 | void |
971 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
972 | { | |
97aff369 | 973 | dVAR; |
3a1ee7e8 NIS |
974 | if (!PL_known_layers) |
975 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 976 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 977 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
978 | } |
979 | ||
1141d9f8 | 980 | int |
fcf2db38 | 981 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 982 | { |
97aff369 | 983 | dVAR; |
14a5cf38 JH |
984 | if (names) { |
985 | const char *s = names; | |
986 | while (*s) { | |
987 | while (isSPACE(*s) || *s == ':') | |
988 | s++; | |
989 | if (*s) { | |
990 | STRLEN llen = 0; | |
991 | const char *e = s; | |
bd61b366 | 992 | const char *as = NULL; |
14a5cf38 JH |
993 | STRLEN alen = 0; |
994 | if (!isIDFIRST(*s)) { | |
995 | /* | |
996 | * Message is consistent with how attribute lists are | |
997 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 998 | * seen as an invalid separator character. |
14a5cf38 | 999 | */ |
de009b76 | 1000 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
1001 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1002 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
1003 | q, *s, q, s); | |
93189314 | 1004 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1005 | return -1; |
1006 | } | |
1007 | do { | |
1008 | e++; | |
0eb30aeb | 1009 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
1010 | llen = e - s; |
1011 | if (*e == '(') { | |
1012 | int nesting = 1; | |
1013 | as = ++e; | |
1014 | while (nesting) { | |
1015 | switch (*e++) { | |
1016 | case ')': | |
1017 | if (--nesting == 0) | |
1018 | alen = (e - 1) - as; | |
1019 | break; | |
1020 | case '(': | |
1021 | ++nesting; | |
1022 | break; | |
1023 | case '\\': | |
1024 | /* | |
1025 | * It's a nul terminated string, not allowed | |
1026 | * to \ the terminating null. Anything other | |
71200d45 | 1027 | * character is passed over. |
14a5cf38 JH |
1028 | */ |
1029 | if (*e++) { | |
1030 | break; | |
1031 | } | |
1032 | /* | |
71200d45 | 1033 | * Drop through |
14a5cf38 JH |
1034 | */ |
1035 | case '\0': | |
1036 | e--; | |
a2a5de95 NC |
1037 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
1038 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
1039 | (int) (e - s), s); | |
14a5cf38 JH |
1040 | return -1; |
1041 | default: | |
1042 | /* | |
71200d45 | 1043 | * boring. |
14a5cf38 JH |
1044 | */ |
1045 | break; | |
1046 | } | |
1047 | } | |
1048 | } | |
1049 | if (e > s) { | |
46c461b5 | 1050 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1051 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1052 | if (layer) { | |
a951d81d BL |
1053 | SV *arg = NULL; |
1054 | if (as) | |
1055 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 1056 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 1057 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 1058 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1059 | } |
1060 | else { | |
a2a5de95 NC |
1061 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
1062 | (int) llen, s); | |
14a5cf38 JH |
1063 | return -1; |
1064 | } | |
1065 | } | |
1066 | s = e; | |
1067 | } | |
1068 | } | |
1069 | } | |
1070 | return 0; | |
1141d9f8 NIS |
1071 | } |
1072 | ||
dfebf958 | 1073 | void |
fcf2db38 | 1074 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1075 | { |
97aff369 | 1076 | dVAR; |
27da23d5 | 1077 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1078 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1079 | tab = &PerlIO_crlf; |
846be114 | 1080 | #else |
6ce75a77 | 1081 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1082 | tab = &PerlIO_stdio; |
846be114 | 1083 | #endif |
14a5cf38 | 1084 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1085 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1086 | &PL_sv_undef); |
dfebf958 NIS |
1087 | } |
1088 | ||
e3f3bf95 | 1089 | SV * |
14a5cf38 | 1090 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1091 | { |
14a5cf38 | 1092 | return av->array[n].arg; |
e3f3bf95 NIS |
1093 | } |
1094 | ||
f3862f8b | 1095 | PerlIO_funcs * |
14a5cf38 | 1096 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1097 | { |
14a5cf38 JH |
1098 | if (n >= 0 && n < av->cur) { |
1099 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1100 | av->array[n].funcs->name); | |
1101 | return av->array[n].funcs; | |
1102 | } | |
1103 | if (!def) | |
1104 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1105 | return def; | |
e3f3bf95 NIS |
1106 | } |
1107 | ||
4ec2216f NIS |
1108 | IV |
1109 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1110 | { | |
8772537c AL |
1111 | PERL_UNUSED_ARG(mode); |
1112 | PERL_UNUSED_ARG(arg); | |
1113 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1114 | if (PerlIOValid(f)) { |
1115 | PerlIO_flush(f); | |
1116 | PerlIO_pop(aTHX_ f); | |
1117 | return 0; | |
1118 | } | |
1119 | return -1; | |
1120 | } | |
1121 | ||
27da23d5 | 1122 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1123 | sizeof(PerlIO_funcs), |
1124 | "pop", | |
1125 | 0, | |
1126 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1127 | PerlIOPop_pushed, | |
1128 | NULL, | |
c0888ace | 1129 | PerlIOBase_open, |
4ec2216f NIS |
1130 | NULL, |
1131 | NULL, | |
1132 | NULL, | |
1133 | NULL, | |
1134 | NULL, | |
1135 | NULL, | |
1136 | NULL, | |
1137 | NULL, | |
de009b76 AL |
1138 | NULL, |
1139 | NULL, | |
4ec2216f NIS |
1140 | NULL, /* flush */ |
1141 | NULL, /* fill */ | |
1142 | NULL, | |
1143 | NULL, | |
1144 | NULL, | |
1145 | NULL, | |
1146 | NULL, /* get_base */ | |
1147 | NULL, /* get_bufsiz */ | |
1148 | NULL, /* get_ptr */ | |
1149 | NULL, /* get_cnt */ | |
1150 | NULL, /* set_ptrcnt */ | |
1151 | }; | |
1152 | ||
fcf2db38 | 1153 | PerlIO_list_t * |
e3f3bf95 NIS |
1154 | PerlIO_default_layers(pTHX) |
1155 | { | |
97aff369 | 1156 | dVAR; |
3a1ee7e8 | 1157 | if (!PL_def_layerlist) { |
284167a5 | 1158 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1159 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1160 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1161 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1162 | #if defined(WIN32) |
27da23d5 | 1163 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1164 | #if 0 |
14a5cf38 | 1165 | osLayer = &PerlIO_win32; |
0c4128ad | 1166 | #endif |
2f8118af | 1167 | #endif |
27da23d5 JH |
1168 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1169 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1170 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1171 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1172 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1173 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1174 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1175 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1176 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1177 | &PL_sv_undef); | |
1178 | if (s) { | |
3a1ee7e8 | 1179 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1180 | } |
1181 | else { | |
3a1ee7e8 | 1182 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1183 | } |
1141d9f8 | 1184 | } |
3a1ee7e8 NIS |
1185 | if (PL_def_layerlist->cur < 2) { |
1186 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1187 | } |
3a1ee7e8 | 1188 | return PL_def_layerlist; |
e3f3bf95 NIS |
1189 | } |
1190 | ||
0c4f7ff0 NIS |
1191 | void |
1192 | Perl_boot_core_PerlIO(pTHX) | |
1193 | { | |
1194 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1195 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1196 | __FILE__); | |
0c4f7ff0 | 1197 | #endif |
14a5cf38 | 1198 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1199 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1200 | } |
e3f3bf95 NIS |
1201 | |
1202 | PerlIO_funcs * | |
1203 | PerlIO_default_layer(pTHX_ I32 n) | |
1204 | { | |
97aff369 | 1205 | dVAR; |
46c461b5 | 1206 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1207 | if (n < 0) |
1208 | n += av->cur; | |
27da23d5 | 1209 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1210 | } |
1211 | ||
a999f61b NIS |
1212 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1213 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1214 | |
1215 | void | |
1141d9f8 | 1216 | PerlIO_stdstreams(pTHX) |
60382766 | 1217 | { |
97aff369 | 1218 | dVAR; |
a1ea730d | 1219 | if (!PL_perlio) { |
8995e67d | 1220 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1221 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1222 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1223 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1224 | } | |
60382766 NIS |
1225 | } |
1226 | ||
1227 | PerlIO * | |
27da23d5 | 1228 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1229 | { |
16865ff7 | 1230 | VERIFY_HEAD(f); |
2dc2558e | 1231 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1232 | Perl_croak( aTHX_ |
5cf96513 RB |
1233 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1234 | "PerlIO layer function table size", (UV)tab->fsize, | |
1235 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1236 | } |
1237 | if (tab->size) { | |
b464bac0 | 1238 | PerlIOl *l; |
2dc2558e | 1239 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1240 | Perl_croak( aTHX_ |
5cf96513 RB |
1241 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1242 | "PerlIO layer instance size", (UV)tab->size, | |
1243 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1244 | } |
1245 | /* Real layer with a data area */ | |
002e75cf JH |
1246 | if (f) { |
1247 | char *temp; | |
1248 | Newxz(temp, tab->size, char); | |
1249 | l = (PerlIOl*)temp; | |
1250 | if (l) { | |
1251 | l->next = *f; | |
1252 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1253 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1254 | *f = l; |
1255 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1256 | (void*)f, tab->name, | |
1257 | (mode) ? mode : "(Null)", (void*)arg); | |
1258 | if (*l->tab->Pushed && | |
1259 | (*l->tab->Pushed) | |
1260 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1261 | PerlIO_pop(aTHX_ f); | |
1262 | return NULL; | |
1263 | } | |
2dc2558e | 1264 | } |
002e75cf JH |
1265 | else |
1266 | return NULL; | |
2dc2558e NIS |
1267 | } |
1268 | } | |
1269 | else if (f) { | |
1270 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1271 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1272 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1273 | if (tab->Pushed && |
27da23d5 | 1274 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1275 | return NULL; |
14a5cf38 JH |
1276 | } |
1277 | } | |
1278 | return f; | |
60382766 NIS |
1279 | } |
1280 | ||
81fe74fb LT |
1281 | PerlIO * |
1282 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1283 | IV n, const char *mode, int fd, int imode, int perm, | |
1284 | PerlIO *old, int narg, SV **args) | |
1285 | { | |
1286 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1287 | if (tab && tab->Open) { | |
1288 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1289 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1290 | PerlIO_close(ret); |
1291 | return NULL; | |
1292 | } | |
1293 | return ret; | |
1294 | } | |
1295 | SETERRNO(EINVAL, LIB_INVARG); | |
1296 | return NULL; | |
1297 | } | |
1298 | ||
dfebf958 | 1299 | IV |
86e05cf2 NIS |
1300 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1301 | { | |
1302 | if (PerlIOValid(f)) { | |
1303 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1304 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1305 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1306 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1307 | } | |
1308 | else { | |
1309 | /* Not suitable - pop it */ | |
1310 | PerlIO_pop(aTHX_ f); | |
1311 | } | |
1312 | return 0; | |
1313 | } | |
1314 | return -1; | |
1315 | } | |
1316 | ||
1317 | IV | |
2dc2558e | 1318 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1319 | { |
8772537c AL |
1320 | PERL_UNUSED_ARG(mode); |
1321 | PERL_UNUSED_ARG(arg); | |
1322 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1323 | |
04892f78 | 1324 | if (PerlIOValid(f)) { |
86e05cf2 | 1325 | PerlIO *t; |
de009b76 | 1326 | const PerlIOl *l; |
14a5cf38 | 1327 | PerlIO_flush(f); |
86e05cf2 NIS |
1328 | /* |
1329 | * Strip all layers that are not suitable for a raw stream | |
1330 | */ | |
1331 | t = f; | |
1332 | while (t && (l = *t)) { | |
cc6623a8 | 1333 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1334 | /* Has a handler - normal case */ |
9d97e8b8 | 1335 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1336 | if (*t == l) { |
1337 | /* Layer still there - move down a layer */ | |
1338 | t = PerlIONext(t); | |
1339 | } | |
1340 | } | |
1341 | else { | |
1342 | return -1; | |
1343 | } | |
14a5cf38 JH |
1344 | } |
1345 | else { | |
86e05cf2 NIS |
1346 | /* No handler - pop it */ |
1347 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1348 | } |
1349 | } | |
86e05cf2 | 1350 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1351 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1352 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1353 | return 0; |
1354 | } | |
14a5cf38 JH |
1355 | } |
1356 | return -1; | |
dfebf958 NIS |
1357 | } |
1358 | ||
ac27b0f5 | 1359 | int |
14a5cf38 | 1360 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1361 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1362 | { |
14a5cf38 JH |
1363 | int code = 0; |
1364 | while (n < max) { | |
8772537c | 1365 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1366 | if (tab) { |
1367 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1368 | code = -1; | |
1369 | break; | |
1370 | } | |
1371 | } | |
1372 | n++; | |
1373 | } | |
1374 | return code; | |
e3f3bf95 NIS |
1375 | } |
1376 | ||
1377 | int | |
ac27b0f5 NIS |
1378 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1379 | { | |
14a5cf38 | 1380 | int code = 0; |
da0fccaa DG |
1381 | ENTER; |
1382 | save_scalar(PL_errgv); | |
53f1b6d2 | 1383 | if (f && names) { |
8772537c | 1384 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1385 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1386 | if (code == 0) { | |
d9dac8cd | 1387 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1388 | } |
3a1ee7e8 | 1389 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1390 | } |
da0fccaa | 1391 | LEAVE; |
14a5cf38 | 1392 | return code; |
ac27b0f5 NIS |
1393 | } |
1394 | ||
f3862f8b | 1395 | |
60382766 | 1396 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1397 | /* |
71200d45 | 1398 | * Given the abstraction above the public API functions |
14a5cf38 | 1399 | */ |
60382766 NIS |
1400 | |
1401 | int | |
f5b9d040 | 1402 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1403 | { |
68b5363f | 1404 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1405 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1406 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1407 | iotype, mode, (names) ? names : "(Null)"); |
1408 | ||
03c0554d NIS |
1409 | if (names) { |
1410 | /* Do not flush etc. if (e.g.) switching encodings. | |
1411 | if a pushed layer knows it needs to flush lower layers | |
1412 | (for example :unix which is never going to call them) | |
1413 | it can do the flush when it is pushed. | |
1414 | */ | |
1415 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1416 | } | |
1417 | else { | |
86e05cf2 | 1418 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1419 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1420 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1421 | O_BINARY so we can look for it in mode. | |
1422 | */ | |
1423 | if (!(mode & O_BINARY)) { | |
1424 | /* Text mode */ | |
86e05cf2 NIS |
1425 | /* FIXME?: Looking down the layer stack seems wrong, |
1426 | but is a way of reaching past (say) an encoding layer | |
1427 | to flip CRLF-ness of the layer(s) below | |
1428 | */ | |
03c0554d NIS |
1429 | while (*f) { |
1430 | /* Perhaps we should turn on bottom-most aware layer | |
1431 | e.g. Ilya's idea that UNIX TTY could serve | |
1432 | */ | |
cc6623a8 DM |
1433 | if (PerlIOBase(f)->tab && |
1434 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1435 | { | |
03c0554d NIS |
1436 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1437 | /* Not in text mode - flush any pending stuff and flip it */ | |
1438 | PerlIO_flush(f); | |
1439 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1440 | } | |
1441 | /* Only need to turn it on in one layer so we are done */ | |
1442 | return TRUE; | |
ed53a2bb | 1443 | } |
03c0554d | 1444 | f = PerlIONext(f); |
14a5cf38 | 1445 | } |
03c0554d NIS |
1446 | /* Not finding a CRLF aware layer presumably means we are binary |
1447 | which is not what was requested - so we failed | |
1448 | We _could_ push :crlf layer but so could caller | |
1449 | */ | |
1450 | return FALSE; | |
14a5cf38 | 1451 | } |
6ce75a77 | 1452 | #endif |
86e05cf2 NIS |
1453 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1454 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1455 | */ |
a0714e2c | 1456 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1457 | } |
f5b9d040 NIS |
1458 | } |
1459 | ||
f5b9d040 | 1460 | int |
e87a358a | 1461 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1462 | { |
37725cdc | 1463 | if (PerlIOValid(f)) { |
46c461b5 | 1464 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1465 | if (tab && tab->Close) |
1466 | return (*tab->Close)(aTHX_ f); | |
1467 | else | |
1468 | return PerlIOBase_close(aTHX_ f); | |
1469 | } | |
14a5cf38 | 1470 | else { |
93189314 | 1471 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1472 | return -1; |
1473 | } | |
76ced9ad NIS |
1474 | } |
1475 | ||
b931b1d9 | 1476 | int |
e87a358a | 1477 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1478 | { |
de009b76 | 1479 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1480 | while (PerlIOValid(f)) { |
1481 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1482 | if (PerlIO_lockcnt(f)) |
1483 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1484 | f = PerlIONext(f); | |
f6c77cf1 | 1485 | } |
14a5cf38 | 1486 | return code; |
b931b1d9 NIS |
1487 | } |
1488 | ||
b931b1d9 | 1489 | int |
e87a358a | 1490 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1491 | { |
97aff369 | 1492 | dVAR; |
b32dd47e | 1493 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1494 | } |
1495 | ||
1141d9f8 | 1496 | |
fcf2db38 | 1497 | static PerlIO_funcs * |
2edd7e44 NIS |
1498 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1499 | { | |
97aff369 | 1500 | dVAR; |
14a5cf38 | 1501 | /* |
71200d45 | 1502 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1503 | */ |
526fd1b4 | 1504 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1505 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1506 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1507 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1508 | if (!f) |
dcbac5bb | 1509 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1510 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1511 | return f; |
1512 | } | |
14a5cf38 JH |
1513 | |
1514 | /* | |
71200d45 | 1515 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1516 | */ |
1517 | switch (SvTYPE(sv)) { | |
1518 | case SVt_PVAV: | |
6a245ed1 | 1519 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1520 | case SVt_PVHV: |
6a245ed1 | 1521 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1522 | case SVt_PVCV: |
6a245ed1 | 1523 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1524 | case SVt_PVGV: |
6a245ed1 | 1525 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1526 | default: |
1527 | return NULL; | |
14a5cf38 | 1528 | } |
2edd7e44 NIS |
1529 | } |
1530 | ||
fcf2db38 | 1531 | PerlIO_list_t * |
14a5cf38 JH |
1532 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1533 | const char *mode, int narg, SV **args) | |
1534 | { | |
97aff369 | 1535 | dVAR; |
14a5cf38 JH |
1536 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1537 | int incdef = 1; | |
a1ea730d | 1538 | if (!PL_perlio) |
14a5cf38 JH |
1539 | PerlIO_stdstreams(aTHX); |
1540 | if (narg) { | |
dcda55fc | 1541 | SV * const arg = *args; |
14a5cf38 | 1542 | /* |
71200d45 NIS |
1543 | * If it is a reference but not an object see if we have a handler |
1544 | * for it | |
14a5cf38 JH |
1545 | */ |
1546 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1547 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1548 | if (handler) { |
3a1ee7e8 NIS |
1549 | def = PerlIO_list_alloc(aTHX); |
1550 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1551 | incdef = 0; |
1552 | } | |
1553 | /* | |
e934609f | 1554 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1555 | * something sensible else we will just stringfy and open |
71200d45 | 1556 | * resulting string. |
14a5cf38 JH |
1557 | */ |
1558 | } | |
1559 | } | |
9fe371da | 1560 | if (!layers || !*layers) |
11bcd5da | 1561 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1562 | if (layers && *layers) { |
1563 | PerlIO_list_t *av; | |
1564 | if (incdef) { | |
a951d81d | 1565 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1566 | } |
1567 | else { | |
1568 | av = def; | |
1569 | } | |
0cff2cf3 NIS |
1570 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1571 | return av; | |
1572 | } | |
1573 | else { | |
1574 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1575 | return NULL; |
0cff2cf3 | 1576 | } |
14a5cf38 JH |
1577 | } |
1578 | else { | |
1579 | if (incdef) | |
1580 | def->refcnt++; | |
1581 | return def; | |
1582 | } | |
ee518936 NIS |
1583 | } |
1584 | ||
1585 | PerlIO * | |
14a5cf38 JH |
1586 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1587 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1588 | { | |
97aff369 | 1589 | dVAR; |
14a5cf38 JH |
1590 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1591 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1592 | if (!layers || !*layers) |
11bcd5da | 1593 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1594 | if (layers && *layers) |
1595 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1596 | } | |
1597 | } | |
1598 | else { | |
de009b76 | 1599 | PerlIO_list_t *layera; |
14a5cf38 JH |
1600 | IV n; |
1601 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1602 | if (PerlIOValid(f)) { |
14a5cf38 | 1603 | /* |
71200d45 NIS |
1604 | * This is "reopen" - it is not tested as perl does not use it |
1605 | * yet | |
14a5cf38 JH |
1606 | */ |
1607 | PerlIOl *l = *f; | |
3a1ee7e8 | 1608 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1609 | while (l) { |
a951d81d | 1610 | SV *arg = NULL; |
cc6623a8 | 1611 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1612 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1613 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1614 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1615 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1616 | l = *PerlIONext(&l); |
1617 | } | |
1618 | } | |
1619 | else { | |
1620 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1621 | if (!layera) { |
1622 | return NULL; | |
1623 | } | |
14a5cf38 JH |
1624 | } |
1625 | /* | |
71200d45 | 1626 | * Start at "top" of layer stack |
14a5cf38 JH |
1627 | */ |
1628 | n = layera->cur - 1; | |
1629 | while (n >= 0) { | |
46c461b5 | 1630 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1631 | if (t && t->Open) { |
1632 | tab = t; | |
1633 | break; | |
1634 | } | |
1635 | n--; | |
1636 | } | |
1637 | if (tab) { | |
1638 | /* | |
71200d45 | 1639 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1640 | */ |
7cf31beb | 1641 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1642 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1643 | } |
14a5cf38 | 1644 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1645 | tab->name, layers ? layers : "(Null)", mode, fd, |
1646 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1647 | if (tab->Open) |
1648 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1649 | f, narg, args); | |
1650 | else { | |
1651 | SETERRNO(EINVAL, LIB_INVARG); | |
1652 | f = NULL; | |
1653 | } | |
14a5cf38 JH |
1654 | if (f) { |
1655 | if (n + 1 < layera->cur) { | |
1656 | /* | |
1657 | * More layers above the one that we used to open - | |
71200d45 | 1658 | * apply them now |
14a5cf38 | 1659 | */ |
d9dac8cd NIS |
1660 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1661 | /* If pushing layers fails close the file */ | |
1662 | PerlIO_close(f); | |
14a5cf38 JH |
1663 | f = NULL; |
1664 | } | |
1665 | } | |
1666 | } | |
1667 | } | |
3a1ee7e8 | 1668 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1669 | } |
1670 | return f; | |
ee518936 | 1671 | } |
b931b1d9 NIS |
1672 | |
1673 | ||
9e353e3b | 1674 | SSize_t |
e87a358a | 1675 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1676 | { |
7918f24d NC |
1677 | PERL_ARGS_ASSERT_PERLIO_READ; |
1678 | ||
b32dd47e | 1679 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1680 | } |
1681 | ||
313ca112 | 1682 | SSize_t |
e87a358a | 1683 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1684 | { |
7918f24d NC |
1685 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1686 | ||
b32dd47e | 1687 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1688 | } |
1689 | ||
9e353e3b | 1690 | SSize_t |
e87a358a | 1691 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1692 | { |
7918f24d NC |
1693 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1694 | ||
b32dd47e | 1695 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1696 | } |
1697 | ||
6f9d8c32 | 1698 | int |
e87a358a | 1699 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1700 | { |
b32dd47e | 1701 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1702 | } |
1703 | ||
9e353e3b | 1704 | Off_t |
e87a358a | 1705 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1706 | { |
b32dd47e | 1707 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1708 | } |
1709 | ||
6f9d8c32 | 1710 | int |
e87a358a | 1711 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1712 | { |
97aff369 | 1713 | dVAR; |
14a5cf38 JH |
1714 | if (f) { |
1715 | if (*f) { | |
de009b76 | 1716 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1717 | |
1718 | if (tab && tab->Flush) | |
f62ce20a | 1719 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1720 | else |
1721 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1722 | } |
1723 | else { | |
fe5a182c | 1724 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1725 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1726 | return -1; |
1727 | } | |
1728 | } | |
1729 | else { | |
1730 | /* | |
1731 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1732 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1733 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1734 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1735 | * decisions? --jhi |
14a5cf38 | 1736 | */ |
303f2dc3 DM |
1737 | PerlIOl **table = &PL_perlio; |
1738 | PerlIOl *ff; | |
14a5cf38 | 1739 | int code = 0; |
303f2dc3 | 1740 | while ((ff = *table)) { |
14a5cf38 | 1741 | int i; |
303f2dc3 | 1742 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1743 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1744 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1745 | code = -1; |
303f2dc3 | 1746 | ff++; |
14a5cf38 JH |
1747 | } |
1748 | } | |
1749 | return code; | |
1750 | } | |
760ac839 LW |
1751 | } |
1752 | ||
a9c883f6 | 1753 | void |
f62ce20a | 1754 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1755 | { |
97aff369 | 1756 | dVAR; |
303f2dc3 DM |
1757 | PerlIOl **table = &PL_perlio; |
1758 | PerlIOl *f; | |
14a5cf38 JH |
1759 | while ((f = *table)) { |
1760 | int i; | |
303f2dc3 | 1761 | table = (PerlIOl **) (f++); |
14a5cf38 | 1762 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1763 | if (f->next |
1764 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1765 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1766 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1767 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1768 | f++; |
1769 | } | |
a9c883f6 | 1770 | } |
a9c883f6 NIS |
1771 | } |
1772 | ||
06da4f11 | 1773 | int |
e87a358a | 1774 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1775 | { |
b32dd47e | 1776 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1777 | } |
1778 | ||
f3862f8b NIS |
1779 | int |
1780 | PerlIO_isutf8(PerlIO *f) | |
1781 | { | |
1b7a0411 JH |
1782 | if (PerlIOValid(f)) |
1783 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1784 | else | |
1785 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1786 | |
1b7a0411 | 1787 | return -1; |
f3862f8b NIS |
1788 | } |
1789 | ||
6f9d8c32 | 1790 | int |
e87a358a | 1791 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1792 | { |
b32dd47e | 1793 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1794 | } |
1795 | ||
9e353e3b | 1796 | int |
e87a358a | 1797 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1798 | { |
b32dd47e | 1799 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1800 | } |
1801 | ||
9e353e3b | 1802 | void |
e87a358a | 1803 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1804 | { |
b32dd47e | 1805 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1806 | } |
1807 | ||
9e353e3b | 1808 | void |
e87a358a | 1809 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1810 | { |
b32dd47e | 1811 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1812 | } |
1813 | ||
9e353e3b NIS |
1814 | int |
1815 | PerlIO_has_base(PerlIO *f) | |
1816 | { | |
1b7a0411 | 1817 | if (PerlIOValid(f)) { |
46c461b5 | 1818 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1819 | |
1820 | if (tab) | |
1821 | return (tab->Get_base != NULL); | |
1b7a0411 | 1822 | } |
1b7a0411 JH |
1823 | |
1824 | return 0; | |
760ac839 LW |
1825 | } |
1826 | ||
9e353e3b NIS |
1827 | int |
1828 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1829 | { |
d7dfc388 SK |
1830 | if (PerlIOValid(f)) { |
1831 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1832 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1833 | |
d7dfc388 SK |
1834 | if (tab) |
1835 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1836 | } |
14a5cf38 | 1837 | } |
1b7a0411 | 1838 | |
14a5cf38 | 1839 | return 0; |
9e353e3b NIS |
1840 | } |
1841 | ||
9e353e3b NIS |
1842 | int |
1843 | PerlIO_has_cntptr(PerlIO *f) | |
1844 | { | |
04892f78 | 1845 | if (PerlIOValid(f)) { |
46c461b5 | 1846 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1847 | |
1848 | if (tab) | |
1849 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1850 | } |
1b7a0411 | 1851 | |
14a5cf38 | 1852 | return 0; |
9e353e3b NIS |
1853 | } |
1854 | ||
9e353e3b NIS |
1855 | int |
1856 | PerlIO_canset_cnt(PerlIO *f) | |
1857 | { | |
04892f78 | 1858 | if (PerlIOValid(f)) { |
46c461b5 | 1859 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1860 | |
1861 | if (tab) | |
1862 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1863 | } |
1b7a0411 | 1864 | |
14a5cf38 | 1865 | return 0; |
760ac839 LW |
1866 | } |
1867 | ||
888911fc | 1868 | STDCHAR * |
e87a358a | 1869 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1870 | { |
b32dd47e | 1871 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1872 | } |
1873 | ||
9e353e3b | 1874 | int |
e87a358a | 1875 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1876 | { |
b32dd47e | 1877 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1878 | } |
1879 | ||
9e353e3b | 1880 | STDCHAR * |
e87a358a | 1881 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1882 | { |
b32dd47e | 1883 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1884 | } |
1885 | ||
05d1247b | 1886 | int |
e87a358a | 1887 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1888 | { |
b32dd47e | 1889 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1890 | } |
1891 | ||
9e353e3b | 1892 | void |
e87a358a | 1893 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1894 | { |
b32dd47e | 1895 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1896 | } |
1897 | ||
9e353e3b | 1898 | void |
e87a358a | 1899 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1900 | { |
b32dd47e | 1901 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1902 | } |
1903 | ||
4ec2216f | 1904 | |
9e353e3b | 1905 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1906 | /* |
71200d45 | 1907 | * utf8 and raw dummy layers |
14a5cf38 | 1908 | */ |
dfebf958 | 1909 | |
26fb694e | 1910 | IV |
2dc2558e | 1911 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1912 | { |
96a5add6 | 1913 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1914 | PERL_UNUSED_ARG(mode); |
1915 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1916 | if (PerlIOValid(f)) { |
cc6623a8 | 1917 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1918 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1919 | else | |
1920 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1921 | return 0; | |
1922 | } | |
1923 | return -1; | |
26fb694e NIS |
1924 | } |
1925 | ||
27da23d5 | 1926 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1927 | sizeof(PerlIO_funcs), |
14a5cf38 | 1928 | "utf8", |
2dc2558e | 1929 | 0, |
a778d1f5 | 1930 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1931 | PerlIOUtf8_pushed, |
1932 | NULL, | |
c0888ace | 1933 | PerlIOBase_open, |
14a5cf38 JH |
1934 | NULL, |
1935 | NULL, | |
1936 | NULL, | |
1937 | NULL, | |
1938 | NULL, | |
1939 | NULL, | |
1940 | NULL, | |
1941 | NULL, | |
de009b76 AL |
1942 | NULL, |
1943 | NULL, | |
22569500 NIS |
1944 | NULL, /* flush */ |
1945 | NULL, /* fill */ | |
14a5cf38 JH |
1946 | NULL, |
1947 | NULL, | |
1948 | NULL, | |
1949 | NULL, | |
22569500 NIS |
1950 | NULL, /* get_base */ |
1951 | NULL, /* get_bufsiz */ | |
1952 | NULL, /* get_ptr */ | |
1953 | NULL, /* get_cnt */ | |
1954 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1955 | }; |
1956 | ||
27da23d5 | 1957 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1958 | sizeof(PerlIO_funcs), |
14a5cf38 | 1959 | "bytes", |
2dc2558e | 1960 | 0, |
a778d1f5 | 1961 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1962 | PerlIOUtf8_pushed, |
1963 | NULL, | |
c0888ace | 1964 | PerlIOBase_open, |
14a5cf38 JH |
1965 | NULL, |
1966 | NULL, | |
1967 | NULL, | |
1968 | NULL, | |
1969 | NULL, | |
1970 | NULL, | |
1971 | NULL, | |
1972 | NULL, | |
de009b76 AL |
1973 | NULL, |
1974 | NULL, | |
22569500 NIS |
1975 | NULL, /* flush */ |
1976 | NULL, /* fill */ | |
14a5cf38 JH |
1977 | NULL, |
1978 | NULL, | |
1979 | NULL, | |
1980 | NULL, | |
22569500 NIS |
1981 | NULL, /* get_base */ |
1982 | NULL, /* get_bufsiz */ | |
1983 | NULL, /* get_ptr */ | |
1984 | NULL, /* get_cnt */ | |
1985 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1986 | }; |
1987 | ||
27da23d5 | 1988 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1989 | sizeof(PerlIO_funcs), |
14a5cf38 | 1990 | "raw", |
2dc2558e | 1991 | 0, |
14a5cf38 JH |
1992 | PERLIO_K_DUMMY, |
1993 | PerlIORaw_pushed, | |
1994 | PerlIOBase_popped, | |
ecfd0649 | 1995 | PerlIOBase_open, |
14a5cf38 JH |
1996 | NULL, |
1997 | NULL, | |
1998 | NULL, | |
1999 | NULL, | |
2000 | NULL, | |
2001 | NULL, | |
2002 | NULL, | |
2003 | NULL, | |
de009b76 AL |
2004 | NULL, |
2005 | NULL, | |
22569500 NIS |
2006 | NULL, /* flush */ |
2007 | NULL, /* fill */ | |
14a5cf38 JH |
2008 | NULL, |
2009 | NULL, | |
2010 | NULL, | |
2011 | NULL, | |
22569500 NIS |
2012 | NULL, /* get_base */ |
2013 | NULL, /* get_bufsiz */ | |
2014 | NULL, /* get_ptr */ | |
2015 | NULL, /* get_cnt */ | |
2016 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
2017 | }; |
2018 | /*--------------------------------------------------------------------------------------*/ | |
2019 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2020 | /* |
71200d45 | 2021 | * "Methods" of the "base class" |
14a5cf38 | 2022 | */ |
9e353e3b NIS |
2023 | |
2024 | IV | |
f62ce20a | 2025 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2026 | { |
04892f78 | 2027 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
2028 | } |
2029 | ||
f5b9d040 | 2030 | char * |
81428673 | 2031 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
2032 | { |
2033 | char *s = buf; | |
81428673 | 2034 | if (PerlIOValid(f)) { |
de009b76 | 2035 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
2036 | if (flags & PERLIO_F_APPEND) { |
2037 | *s++ = 'a'; | |
2038 | if (flags & PERLIO_F_CANREAD) { | |
2039 | *s++ = '+'; | |
2040 | } | |
14a5cf38 | 2041 | } |
81428673 NIS |
2042 | else if (flags & PERLIO_F_CANREAD) { |
2043 | *s++ = 'r'; | |
2044 | if (flags & PERLIO_F_CANWRITE) | |
2045 | *s++ = '+'; | |
2046 | } | |
2047 | else if (flags & PERLIO_F_CANWRITE) { | |
2048 | *s++ = 'w'; | |
2049 | if (flags & PERLIO_F_CANREAD) { | |
2050 | *s++ = '+'; | |
2051 | } | |
14a5cf38 | 2052 | } |
35990314 | 2053 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2054 | if (!(flags & PERLIO_F_CRLF)) |
2055 | *s++ = 'b'; | |
5f1a76d0 | 2056 | #endif |
81428673 | 2057 | } |
14a5cf38 JH |
2058 | *s = '\0'; |
2059 | return buf; | |
f5b9d040 NIS |
2060 | } |
2061 | ||
81428673 | 2062 | |
76ced9ad | 2063 | IV |
2dc2558e | 2064 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2065 | { |
de009b76 | 2066 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2067 | PERL_UNUSED_CONTEXT; |
8772537c | 2068 | PERL_UNUSED_ARG(arg); |
de009b76 | 2069 | |
14a5cf38 JH |
2070 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2071 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 2072 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
2073 | l->flags |= PERLIO_F_FASTGETS; |
2074 | if (mode) { | |
3b6c1aba | 2075 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2076 | mode++; |
2077 | switch (*mode++) { | |
2078 | case 'r': | |
2079 | l->flags |= PERLIO_F_CANREAD; | |
2080 | break; | |
2081 | case 'a': | |
2082 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2083 | break; | |
2084 | case 'w': | |
2085 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2086 | break; | |
2087 | default: | |
93189314 | 2088 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2089 | return -1; |
2090 | } | |
2091 | while (*mode) { | |
2092 | switch (*mode++) { | |
2093 | case '+': | |
2094 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2095 | break; | |
2096 | case 'b': | |
2097 | l->flags &= ~PERLIO_F_CRLF; | |
2098 | break; | |
2099 | case 't': | |
2100 | l->flags |= PERLIO_F_CRLF; | |
2101 | break; | |
2102 | default: | |
93189314 | 2103 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2104 | return -1; |
2105 | } | |
2106 | } | |
2107 | } | |
2108 | else { | |
2109 | if (l->next) { | |
2110 | l->flags |= l->next->flags & | |
2111 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2112 | PERLIO_F_APPEND); | |
2113 | } | |
2114 | } | |
5e2ab84b | 2115 | #if 0 |
14a5cf38 | 2116 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2117 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2118 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2119 | #endif |
14a5cf38 | 2120 | return 0; |
76ced9ad NIS |
2121 | } |
2122 | ||
2123 | IV | |
f62ce20a | 2124 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2125 | { |
96a5add6 | 2126 | PERL_UNUSED_CONTEXT; |
8772537c | 2127 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2128 | return 0; |
760ac839 LW |
2129 | } |
2130 | ||
9e353e3b | 2131 | SSize_t |
f62ce20a | 2132 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2133 | { |
14a5cf38 | 2134 | /* |
71200d45 | 2135 | * Save the position as current head considers it |
14a5cf38 | 2136 | */ |
de009b76 | 2137 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2138 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2139 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2140 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2141 | } |
2142 | ||
f6c77cf1 | 2143 | SSize_t |
f62ce20a | 2144 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2145 | { |
14a5cf38 JH |
2146 | STDCHAR *buf = (STDCHAR *) vbuf; |
2147 | if (f) { | |
263df5f1 JH |
2148 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2149 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2150 | SETERRNO(EBADF, SS_IVCHAN); | |
2151 | return 0; | |
2152 | } | |
14a5cf38 | 2153 | while (count > 0) { |
93c2c2ec IZ |
2154 | get_cnt: |
2155 | { | |
14a5cf38 JH |
2156 | SSize_t avail = PerlIO_get_cnt(f); |
2157 | SSize_t take = 0; | |
2158 | if (avail > 0) | |
94e529cc | 2159 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2160 | if (take > 0) { |
2161 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2162 | Copy(ptr, buf, take, STDCHAR); | |
2163 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2164 | count -= take; | |
2165 | buf += take; | |
93c2c2ec IZ |
2166 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2167 | goto get_cnt; | |
14a5cf38 JH |
2168 | } |
2169 | if (count > 0 && avail <= 0) { | |
2170 | if (PerlIO_fill(f) != 0) | |
2171 | break; | |
2172 | } | |
93c2c2ec | 2173 | } |
14a5cf38 JH |
2174 | } |
2175 | return (buf - (STDCHAR *) vbuf); | |
2176 | } | |
f6c77cf1 | 2177 | return 0; |
f6c77cf1 NIS |
2178 | } |
2179 | ||
9e353e3b | 2180 | IV |
f62ce20a | 2181 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2182 | { |
96a5add6 | 2183 | PERL_UNUSED_CONTEXT; |
8772537c | 2184 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2185 | return 0; |
9e353e3b NIS |
2186 | } |
2187 | ||
2188 | IV | |
f62ce20a | 2189 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2190 | { |
96a5add6 | 2191 | PERL_UNUSED_CONTEXT; |
8772537c | 2192 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2193 | return -1; |
06da4f11 NIS |
2194 | } |
2195 | ||
2196 | IV | |
f62ce20a | 2197 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2198 | { |
37725cdc NIS |
2199 | IV code = -1; |
2200 | if (PerlIOValid(f)) { | |
2201 | PerlIO *n = PerlIONext(f); | |
2202 | code = PerlIO_flush(f); | |
2203 | PerlIOBase(f)->flags &= | |
2204 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2205 | while (PerlIOValid(n)) { | |
de009b76 | 2206 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2207 | if (tab && tab->Close) { |
2208 | if ((*tab->Close)(aTHX_ n) != 0) | |
2209 | code = -1; | |
2210 | break; | |
2211 | } | |
2212 | else { | |
2213 | PerlIOBase(n)->flags &= | |
2214 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2215 | } | |
2216 | n = PerlIONext(n); | |
2217 | } | |
2218 | } | |
2219 | else { | |
2220 | SETERRNO(EBADF, SS_IVCHAN); | |
2221 | } | |
14a5cf38 | 2222 | return code; |
9e353e3b NIS |
2223 | } |
2224 | ||
2225 | IV | |
f62ce20a | 2226 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2227 | { |
96a5add6 | 2228 | PERL_UNUSED_CONTEXT; |
04892f78 | 2229 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2230 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2231 | } | |
2232 | return 1; | |
9e353e3b NIS |
2233 | } |
2234 | ||
2235 | IV | |
f62ce20a | 2236 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2237 | { |
96a5add6 | 2238 | PERL_UNUSED_CONTEXT; |
04892f78 | 2239 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2240 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2241 | } | |
2242 | return 1; | |
9e353e3b NIS |
2243 | } |
2244 | ||
2245 | void | |
f62ce20a | 2246 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2247 | { |
04892f78 | 2248 | if (PerlIOValid(f)) { |
dcda55fc | 2249 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2250 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2251 | if (PerlIOValid(n)) |
14a5cf38 JH |
2252 | PerlIO_clearerr(n); |
2253 | } | |
9e353e3b NIS |
2254 | } |
2255 | ||
2256 | void | |
f62ce20a | 2257 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2258 | { |
96a5add6 | 2259 | PERL_UNUSED_CONTEXT; |
04892f78 | 2260 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2261 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2262 | } | |
9e353e3b NIS |
2263 | } |
2264 | ||
93a8090d NIS |
2265 | SV * |
2266 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2267 | { | |
2268 | if (!arg) | |
a0714e2c | 2269 | return NULL; |
93a8090d NIS |
2270 | #ifdef sv_dup |
2271 | if (param) { | |
a951d81d BL |
2272 | arg = sv_dup(arg, param); |
2273 | SvREFCNT_inc_simple_void_NN(arg); | |
2274 | return arg; | |
93a8090d NIS |
2275 | } |
2276 | else { | |
2277 | return newSVsv(arg); | |
2278 | } | |
2279 | #else | |
1b6737cc | 2280 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2281 | return newSVsv(arg); |
2282 | #endif | |
2283 | } | |
2284 | ||
2285 | PerlIO * | |
ecdeb87c | 2286 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2287 | { |
1b6737cc | 2288 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2289 | if (PerlIOValid(nexto)) { |
de009b76 | 2290 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2291 | if (tab && tab->Dup) |
2292 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2293 | else | |
2294 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2295 | } |
2296 | if (f) { | |
dcda55fc | 2297 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2298 | SV *arg = NULL; |
93a8090d | 2299 | char buf[8]; |
fe5a182c | 2300 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2301 | self ? self->name : "(Null)", |
2302 | (void*)f, (void*)o, (void*)param); | |
2303 | if (self && self->Getarg) | |
210e727c | 2304 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2305 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
f0720f70 RGS |
2306 | if (PerlIOBase(o)->flags & PERLIO_F_UTF8) |
2307 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
ef8d46e8 | 2308 | SvREFCNT_dec(arg); |
93a8090d NIS |
2309 | } |
2310 | return f; | |
2311 | } | |
2312 | ||
27da23d5 | 2313 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2314 | |
8b84d7dd | 2315 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2316 | static void |
2317 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2318 | dVAR; |
22c96fc1 | 2319 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2320 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2321 | int *new_array; |
2322 | ||
2323 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2324 | old_max, new_fd, new_max); | |
2325 | ||
2326 | if (new_fd < old_max) { | |
2327 | return; | |
2328 | } | |
2329 | ||
f4ae5be6 NC |
2330 | assert (new_max > new_fd); |
2331 | ||
eae082a0 JH |
2332 | /* Use plain realloc() since we need this memory to be really |
2333 | * global and visible to all the interpreters and/or threads. */ | |
2334 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2335 | |
2336 | if (!new_array) { | |
8b84d7dd | 2337 | #ifdef USE_ITHREADS |
6cb8cb21 | 2338 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2339 | #endif |
4cbe3a7d | 2340 | croak_no_mem(); |
22c96fc1 NC |
2341 | } |
2342 | ||
2343 | PL_perlio_fd_refcnt_size = new_max; | |
2344 | PL_perlio_fd_refcnt = new_array; | |
2345 | ||
95b63a38 JH |
2346 | PerlIO_debug("Zeroing %p, %d\n", |
2347 | (void*)(new_array + old_max), | |
2348 | new_max - old_max); | |
22c96fc1 NC |
2349 | |
2350 | Zero(new_array + old_max, new_max - old_max, int); | |
2351 | } | |
2352 | ||
2353 | ||
93a8090d NIS |
2354 | void |
2355 | PerlIO_init(pTHX) | |
2356 | { | |
8b84d7dd | 2357 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2358 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2359 | } |
2360 | ||
168d5872 NIS |
2361 | void |
2362 | PerlIOUnix_refcnt_inc(int fd) | |
2363 | { | |
27da23d5 | 2364 | dTHX; |
22c96fc1 | 2365 | if (fd >= 0) { |
97aff369 | 2366 | dVAR; |
22c96fc1 | 2367 | |
8b84d7dd | 2368 | #ifdef USE_ITHREADS |
6cb8cb21 | 2369 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2370 | #endif |
22c96fc1 NC |
2371 | if (fd >= PL_perlio_fd_refcnt_size) |
2372 | S_more_refcounted_fds(aTHX_ fd); | |
2373 | ||
27da23d5 | 2374 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2375 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2376 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2377 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2378 | fd, PL_perlio_fd_refcnt[fd]); | |
2379 | } | |
2380 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2381 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2382 | |
8b84d7dd | 2383 | #ifdef USE_ITHREADS |
6cb8cb21 | 2384 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2385 | #endif |
8b84d7dd | 2386 | } else { |
12605ff9 | 2387 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2388 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2389 | } |
2390 | } | |
2391 | ||
168d5872 NIS |
2392 | int |
2393 | PerlIOUnix_refcnt_dec(int fd) | |
2394 | { | |
2395 | int cnt = 0; | |
22c96fc1 | 2396 | if (fd >= 0) { |
97aff369 | 2397 | dVAR; |
8b84d7dd | 2398 | #ifdef USE_ITHREADS |
6cb8cb21 | 2399 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2400 | #endif |
8b84d7dd | 2401 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2402 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2403 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2404 | fd, PL_perlio_fd_refcnt_size); |
2405 | } | |
2406 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2407 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2408 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2409 | fd, PL_perlio_fd_refcnt[fd]); |
2410 | } | |
27da23d5 | 2411 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2412 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2413 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2414 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2415 | #endif |
8b84d7dd | 2416 | } else { |
12605ff9 | 2417 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2418 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2419 | } |
2420 | return cnt; | |
2421 | } | |
2422 | ||
2e0cfa16 FC |
2423 | int |
2424 | PerlIOUnix_refcnt(int fd) | |
2425 | { | |
2426 | dTHX; | |
2427 | int cnt = 0; | |
2428 | if (fd >= 0) { | |
2429 | dVAR; | |
2430 | #ifdef USE_ITHREADS | |
2431 | MUTEX_LOCK(&PL_perlio_mutex); | |
2432 | #endif | |
2433 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2434 | /* diag_listed_as: refcnt: fd %d%s */ | |
2435 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2436 | fd, PL_perlio_fd_refcnt_size); | |
2437 | } | |
2438 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2439 | /* diag_listed_as: refcnt: fd %d%s */ | |
2440 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2441 | fd, PL_perlio_fd_refcnt[fd]); | |
2442 | } | |
2443 | cnt = PL_perlio_fd_refcnt[fd]; | |
2444 | #ifdef USE_ITHREADS | |
2445 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2446 | #endif | |
2447 | } else { | |
2448 | /* diag_listed_as: refcnt: fd %d%s */ | |
2449 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2450 | } | |
2451 | return cnt; | |
2452 | } | |
2453 | ||
694c95cf JH |
2454 | void |
2455 | PerlIO_cleanup(pTHX) | |
2456 | { | |
97aff369 | 2457 | dVAR; |
694c95cf JH |
2458 | int i; |
2459 | #ifdef USE_ITHREADS | |
a25429c6 | 2460 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2461 | #else |
2462 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2463 | #endif |
e47547a8 | 2464 | |
694c95cf JH |
2465 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2466 | for (i=0; i < 3; i++) | |
2467 | PerlIOUnix_refcnt_inc(i); | |
2468 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2469 | /* Restore STDIN..STDERR refcount */ | |
2470 | for (i=0; i < 3; i++) | |
2471 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2472 | |
2473 | if (PL_known_layers) { | |
2474 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2475 | PL_known_layers = NULL; | |
2476 | } | |
27da23d5 | 2477 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2478 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2479 | PL_def_layerlist = NULL; | |
2480 | } | |
6cb8cb21 RGS |
2481 | } |
2482 | ||
0934c9d9 | 2483 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2484 | { |
53d44271 | 2485 | dVAR; |
4f3da17a DM |
2486 | #if 0 |
2487 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2488 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2489 | being present (at least in win32) :-(. | |
2490 | Disable for now. | |
2491 | */ | |
6cb8cb21 RGS |
2492 | #ifdef DEBUGGING |
2493 | { | |
2494 | /* By now all filehandles should have been closed, so any | |
2495 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2496 | * errors. */ | |
77db880c JH |
2497 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2498 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2499 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2500 | int i; |
2501 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2502 | if (PL_perlio_fd_refcnt[i]) { |
2503 | const STRLEN len = | |
2504 | my_snprintf(buf, sizeof(buf), | |
2505 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2506 | i, PL_perlio_fd_refcnt[i]); | |
2507 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2508 | } | |
6cb8cb21 RGS |
2509 | } |
2510 | } | |
2511 | #endif | |
4f3da17a | 2512 | #endif |
eae082a0 JH |
2513 | /* Not bothering with PL_perlio_mutex since by now |
2514 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2515 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2516 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2517 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2518 | PL_perlio_fd_refcnt = NULL; |
2519 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2520 | } |
694c95cf JH |
2521 | } |
2522 | ||
9e353e3b | 2523 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2524 | /* |
71200d45 | 2525 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2526 | */ |
9e353e3b | 2527 | |
14a5cf38 | 2528 | typedef struct { |
22569500 NIS |
2529 | struct _PerlIO base; /* The generic part */ |
2530 | int fd; /* UNIX like file descriptor */ | |
2531 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2532 | } PerlIOUnix; |
2533 | ||
abf9167d DM |
2534 | static void |
2535 | S_lockcnt_dec(pTHX_ const void* f) | |
2536 | { | |
2537 | PerlIO_lockcnt((PerlIO*)f)--; | |
2538 | } | |
2539 | ||
2540 | ||
2541 | /* call the signal handler, and if that handler happens to clear | |
2542 | * this handle, free what we can and return true */ | |
2543 | ||
2544 | static bool | |
2545 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2546 | ENTER; | |
2547 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2548 | PerlIO_lockcnt(f)++; | |
2549 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2550 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2551 | LEAVE; | |
abf9167d | 2552 | return 0; |
be48bbe8 | 2553 | } |
abf9167d DM |
2554 | /* we've just run some perl-level code that could have done |
2555 | * anything, including closing the file or clearing this layer. | |
2556 | * If so, free any lower layers that have already been | |
2557 | * cleared, then return an error. */ | |
2558 | while (PerlIOValid(f) && | |
2559 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2560 | { | |
2561 | const PerlIOl *l = *f; | |
2562 | *f = l->next; | |
2563 | Safefree(l); | |
2564 | } | |
be48bbe8 | 2565 | LEAVE; |
abf9167d DM |
2566 | return 1; |
2567 | } | |
2568 | ||
6f9d8c32 | 2569 | int |
9e353e3b | 2570 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2571 | { |
14a5cf38 | 2572 | int oflags = -1; |
3b6c1aba | 2573 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2574 | mode++; |
2575 | switch (*mode) { | |
2576 | case 'r': | |
2577 | oflags = O_RDONLY; | |
2578 | if (*++mode == '+') { | |
2579 | oflags = O_RDWR; | |
2580 | mode++; | |
2581 | } | |
2582 | break; | |
2583 | ||
2584 | case 'w': | |
2585 | oflags = O_CREAT | O_TRUNC; | |
2586 | if (*++mode == '+') { | |
2587 | oflags |= O_RDWR; | |
2588 | mode++; | |
2589 | } | |
2590 | else | |
2591 | oflags |= O_WRONLY; | |
2592 | break; | |
2593 | ||
2594 | case 'a': | |
2595 | oflags = O_CREAT | O_APPEND; | |
2596 | if (*++mode == '+') { | |
2597 | oflags |= O_RDWR; | |
2598 | mode++; | |
2599 | } | |
2600 | else | |
2601 | oflags |= O_WRONLY; | |
2602 | break; | |
2603 | } | |
2604 | if (*mode == 'b') { | |
2605 | oflags |= O_BINARY; | |
2606 | oflags &= ~O_TEXT; | |
2607 | mode++; | |
2608 | } | |
2609 | else if (*mode == 't') { | |
2610 | oflags |= O_TEXT; | |
2611 | oflags &= ~O_BINARY; | |
2612 | mode++; | |
2613 | } | |
93f31ee9 PG |
2614 | else { |
2615 | #ifdef PERLIO_USING_CRLF | |
2616 | /* | |
2617 | * If neither "t" nor "b" was specified, open the file | |
2618 | * in O_BINARY mode. | |
2619 | */ | |
2620 | oflags |= O_BINARY; | |
2621 | #endif | |
2622 | } | |
14a5cf38 | 2623 | if (*mode || oflags == -1) { |
93189314 | 2624 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2625 | oflags = -1; |
2626 | } | |
2627 | return oflags; | |
9e353e3b NIS |
2628 | } |
2629 | ||
2630 | IV | |
f62ce20a | 2631 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2632 | { |
96a5add6 | 2633 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2634 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2635 | } |
2636 | ||
aa063c35 NIS |
2637 | static void |
2638 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2639 | { |
de009b76 | 2640 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2641 | #if defined(WIN32) |
aa063c35 NIS |
2642 | Stat_t st; |
2643 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2644 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2645 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2646 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2647 | } | |
aa063c35 NIS |
2648 | else { |
2649 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2650 | } | |
6caa5a9c NIS |
2651 | } |
2652 | #endif | |
aa063c35 NIS |
2653 | s->fd = fd; |
2654 | s->oflags = imode; | |
2655 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2656 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2657 | } |
2658 | ||
2659 | IV | |
2660 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2661 | { | |
2662 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2663 | if (*PerlIONext(f)) { |
4b069b44 | 2664 | /* We never call down so do any pending stuff now */ |
03c0554d | 2665 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2666 | /* |
71200d45 | 2667 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2668 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2669 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2670 | */ |
acbd16bf | 2671 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2672 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2673 | } |
2674 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2675 | |
14a5cf38 | 2676 | return code; |
4b803d04 NIS |
2677 | } |
2678 | ||
c2fcde81 JH |
2679 | IV |
2680 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2681 | { | |
de009b76 | 2682 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2683 | Off_t new_loc; |
96a5add6 | 2684 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2685 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2686 | #ifdef ESPIPE | |
2687 | SETERRNO(ESPIPE, LIB_INVARG); | |
2688 | #else | |
2689 | SETERRNO(EINVAL, LIB_INVARG); | |
2690 | #endif | |
2691 | return -1; | |
2692 | } | |
0723351e NC |
2693 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2694 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2695 | return -1; |
c2fcde81 JH |
2696 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2697 | return 0; | |
2698 | } | |
2699 | ||
9e353e3b | 2700 | PerlIO * |
14a5cf38 JH |
2701 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2702 | IV n, const char *mode, int fd, int imode, | |
2703 | int perm, PerlIO *f, int narg, SV **args) | |
2704 | { | |
d9dac8cd | 2705 | if (PerlIOValid(f)) { |
cc6623a8 | 2706 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2707 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2708 | } |
2709 | if (narg > 0) { | |
3b6c1aba | 2710 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2711 | mode++; |
2712 | else { | |
2713 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2714 | #ifdef VMS |
2715 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2716 | #else | |
14a5cf38 | 2717 | perm = 0666; |
5e2ce0f3 | 2718 | #endif |
14a5cf38 JH |
2719 | } |
2720 | if (imode != -1) { | |
e62f0680 | 2721 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2722 | fd = PerlLIO_open3(path, imode, perm); |
2723 | } | |
2724 | } | |
2725 | if (fd >= 0) { | |
3b6c1aba | 2726 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2727 | mode++; |
2728 | if (!f) { | |
2729 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2730 | } |
2731 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2732 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2733 | return NULL; | |
2734 | } | |
d9dac8cd | 2735 | } |
aa063c35 | 2736 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2737 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2738 | if (*mode == IoTYPE_APPEND) |
2739 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2740 | return f; |
2741 | } | |
2742 | else { | |
2743 | if (f) { | |
6f207bd3 | 2744 | NOOP; |
14a5cf38 | 2745 | /* |
71200d45 | 2746 | * FIXME: pop layers ??? |
14a5cf38 JH |
2747 | */ |
2748 | } | |
2749 | return NULL; | |
2750 | } | |
9e353e3b NIS |
2751 | } |
2752 | ||
71200d45 | 2753 | PerlIO * |
ecdeb87c | 2754 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2755 | { |
dcda55fc | 2756 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2757 | int fd = os->fd; |
ecdeb87c NIS |
2758 | if (flags & PERLIO_DUP_FD) { |
2759 | fd = PerlLIO_dup(fd); | |
2760 | } | |
22c96fc1 | 2761 | if (fd >= 0) { |
ecdeb87c | 2762 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2763 | if (f) { |
2764 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2765 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2766 | return f; |
2767 | } | |
71200d45 NIS |
2768 | } |
2769 | return NULL; | |
2770 | } | |
2771 | ||
2772 | ||
9e353e3b | 2773 | SSize_t |
f62ce20a | 2774 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2775 | { |
97aff369 | 2776 | dVAR; |
abf9167d DM |
2777 | int fd; |
2778 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2779 | return -1; | |
2780 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2781 | #ifdef PERLIO_STD_SPECIAL |
2782 | if (fd == 0) | |
2783 | return PERLIO_STD_IN(fd, vbuf, count); | |
2784 | #endif | |
81428673 | 2785 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2786 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2787 | return 0; |
1fd8f4ce | 2788 | } |
14a5cf38 | 2789 | while (1) { |
b464bac0 | 2790 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2791 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2792 | if (len < 0) { |
2793 | if (errno != EAGAIN) { | |
2794 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2795 | } | |
2796 | } | |
2797 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2798 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2799 | SETERRNO(0,0); |
2800 | } | |
14a5cf38 JH |
2801 | return len; |
2802 | } | |
abf9167d DM |
2803 | /* EINTR */ |
2804 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2805 | return -1; | |
14a5cf38 | 2806 | } |
b464bac0 | 2807 | /*NOTREACHED*/ |
9e353e3b NIS |
2808 | } |
2809 | ||
2810 | SSize_t | |
f62ce20a | 2811 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2812 | { |
97aff369 | 2813 | dVAR; |
abf9167d DM |
2814 | int fd; |
2815 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2816 | return -1; | |
2817 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2818 | #ifdef PERLIO_STD_SPECIAL |
2819 | if (fd == 1 || fd == 2) | |
2820 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2821 | #endif | |
14a5cf38 | 2822 | while (1) { |
de009b76 | 2823 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2824 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2825 | if (len < 0) { |
2826 | if (errno != EAGAIN) { | |
2827 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2828 | } | |
2829 | } | |
14a5cf38 JH |
2830 | return len; |
2831 | } | |
abf9167d DM |
2832 | /* EINTR */ |
2833 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2834 | return -1; | |
06da4f11 | 2835 | } |
1b6737cc | 2836 | /*NOTREACHED*/ |
9e353e3b NIS |
2837 | } |
2838 | ||
9e353e3b | 2839 | Off_t |
f62ce20a | 2840 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2841 | { |
96a5add6 AL |
2842 | PERL_UNUSED_CONTEXT; |
2843 | ||
14a5cf38 | 2844 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2845 | } |
2846 | ||
2556f95e GF |
2847 | |
2848 | IV | |
2376d97d | 2849 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2850 | { |
97aff369 | 2851 | dVAR; |
de009b76 | 2852 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2853 | int code = 0; |
168d5872 NIS |
2854 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2855 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2856 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2857 | return 0; | |
22569500 | 2858 | } |
93a8090d NIS |
2859 | } |
2860 | else { | |
93189314 | 2861 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2862 | return -1; |
2863 | } | |
14a5cf38 JH |
2864 | while (PerlLIO_close(fd) != 0) { |
2865 | if (errno != EINTR) { | |
2866 | code = -1; | |
2867 | break; | |
2868 | } | |
abf9167d DM |
2869 | /* EINTR */ |
2870 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2871 | return -1; | |
14a5cf38 JH |
2872 | } |
2873 | if (code == 0) { | |
2874 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2875 | } | |
2876 | return code; | |
9e353e3b NIS |
2877 | } |
2878 | ||
27da23d5 | 2879 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2880 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2881 | "unix", |
2882 | sizeof(PerlIOUnix), | |
2883 | PERLIO_K_RAW, | |
2884 | PerlIOUnix_pushed, | |
2376d97d | 2885 | PerlIOBase_popped, |
14a5cf38 | 2886 | PerlIOUnix_open, |
86e05cf2 | 2887 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2888 | NULL, |
2889 | PerlIOUnix_fileno, | |
71200d45 | 2890 | PerlIOUnix_dup, |
14a5cf38 JH |
2891 | PerlIOUnix_read, |
2892 | PerlIOBase_unread, | |
2893 | PerlIOUnix_write, | |
2894 | PerlIOUnix_seek, | |
2895 | PerlIOUnix_tell, | |
2896 | PerlIOUnix_close, | |
22569500 NIS |
2897 | PerlIOBase_noop_ok, /* flush */ |
2898 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2899 | PerlIOBase_eof, |
2900 | PerlIOBase_error, | |
2901 | PerlIOBase_clearerr, | |
2902 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2903 | NULL, /* get_base */ |
2904 | NULL, /* get_bufsiz */ | |
2905 | NULL, /* get_ptr */ | |
2906 | NULL, /* get_cnt */ | |
2907 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2908 | }; |
2909 | ||
2910 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2911 | /* |
71200d45 | 2912 | * stdio as a layer |
14a5cf38 | 2913 | */ |
9e353e3b | 2914 | |
313e59c8 NIS |
2915 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2916 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2917 | broken by the last second glibc 2.3 fix | |
2918 | */ | |
2919 | #define STDIO_BUFFER_WRITABLE | |
2920 | #endif | |
2921 | ||
2922 | ||
14a5cf38 JH |
2923 | typedef struct { |
2924 | struct _PerlIO base; | |
22569500 | 2925 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2926 | } PerlIOStdio; |
2927 | ||
2928 | IV | |
f62ce20a | 2929 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2930 | { |
96a5add6 AL |
2931 | PERL_UNUSED_CONTEXT; |
2932 | ||
c4420975 AL |
2933 | if (PerlIOValid(f)) { |
2934 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2935 | if (s) | |
2936 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2937 | } |
2938 | errno = EBADF; | |
2939 | return -1; | |
9e353e3b NIS |
2940 | } |
2941 | ||
766a733e | 2942 | char * |
14a5cf38 JH |
2943 | PerlIOStdio_mode(const char *mode, char *tmode) |
2944 | { | |
de009b76 | 2945 | char * const ret = tmode; |
a0625d38 SR |
2946 | if (mode) { |
2947 | while (*mode) { | |
2948 | *tmode++ = *mode++; | |
2949 | } | |
14a5cf38 | 2950 | } |
95005ad8 | 2951 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2952 | *tmode++ = 'b'; |
2953 | #endif | |
14a5cf38 JH |
2954 | *tmode = '\0'; |
2955 | return ret; | |
2956 | } | |
2957 | ||
4b803d04 | 2958 | IV |
2dc2558e | 2959 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2960 | { |
1fd8f4ce NIS |
2961 | PerlIO *n; |
2962 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2963 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2964 | if (toptab == tab) { |
2965 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2966 | PerlIO_pop(aTHX_ f); | |
2967 | return 0; | |
2968 | } else { | |
de009b76 | 2969 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2970 | char tmode[8]; |
2971 | FILE *stdio; | |
81428673 | 2972 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2973 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2974 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2975 | /* We never call down so do any pending stuff now */ | |
2976 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2977 | } |
1fd8f4ce NIS |
2978 | else { |
2979 | return -1; | |
2980 | } | |
2981 | } | |
14a5cf38 | 2982 | } |
2dc2558e | 2983 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2984 | } |
2985 | ||
22569500 | 2986 | |
9e353e3b | 2987 | PerlIO * |
4b069b44 | 2988 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2989 | { |
14a5cf38 JH |
2990 | dTHX; |
2991 | PerlIO *f = NULL; | |
2992 | if (stdio) { | |
22569500 | 2993 | PerlIOStdio *s; |
4b069b44 NIS |
2994 | if (!mode || !*mode) { |
2995 | /* We need to probe to see how we can open the stream | |
2996 | so start with read/write and then try write and read | |
2997 | we dup() so that we can fclose without loosing the fd. | |
2998 | ||
2999 | Note that the errno value set by a failing fdopen | |
3000 | varies between stdio implementations. | |
3001 | */ | |
de009b76 | 3002 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 3003 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 3004 | if (!f2) { |
a33cf58c | 3005 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
3006 | } |
3007 | if (!f2) { | |
a33cf58c | 3008 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
3009 | } |
3010 | if (!f2) { | |
3011 | /* Don't seem to be able to open */ | |
3012 | PerlLIO_close(fd); | |
3013 | return f; | |
3014 | } | |
3015 | fclose(f2); | |
22569500 | 3016 | } |
a0714e2c | 3017 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
3018 | s = PerlIOSelf(f, PerlIOStdio); |
3019 | s->stdio = stdio; | |
c586124f | 3020 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 3021 | } |
14a5cf38 JH |
3022 | } |
3023 | return f; | |
9e353e3b NIS |
3024 | } |
3025 | ||
3026 | PerlIO * | |
14a5cf38 JH |
3027 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3028 | IV n, const char *mode, int fd, int imode, | |
3029 | int perm, PerlIO *f, int narg, SV **args) | |
3030 | { | |
3031 | char tmode[8]; | |
d9dac8cd | 3032 | if (PerlIOValid(f)) { |
dcda55fc AL |
3033 | const char * const path = SvPV_nolen_const(*args); |
3034 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
3035 | FILE *stdio; |
3036 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
3037 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
3038 | s->stdio); |
3039 | if (!s->stdio) | |
3040 | return NULL; | |
3041 | s->stdio = stdio; | |
1751d015 | 3042 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3043 | return f; |
3044 | } | |
3045 | else { | |
3046 | if (narg > 0) { | |
dcda55fc | 3047 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 3048 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3049 | mode++; |
3050 | fd = PerlLIO_open3(path, imode, perm); | |
3051 | } | |
3052 | else { | |
95005ad8 GH |
3053 | FILE *stdio; |
3054 | bool appended = FALSE; | |
3055 | #ifdef __CYGWIN__ | |
3056 | /* Cygwin wants its 'b' early. */ | |
3057 | appended = TRUE; | |
3058 | mode = PerlIOStdio_mode(mode, tmode); | |
3059 | #endif | |
3060 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3061 | if (stdio) { |
6f0313ac JH |
3062 | if (!f) { |
3063 | f = PerlIO_allocate(aTHX); | |
3064 | } | |
95005ad8 GH |
3065 | if (!appended) |
3066 | mode = PerlIOStdio_mode(mode, tmode); | |
3067 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3068 | if (f) { | |
0f0f9e2b JH |
3069 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3070 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3071 | } else { | |
3072 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3073 | } |
3074 | return f; | |
3075 | } | |
3076 | else { | |
3077 | return NULL; | |
3078 | } | |
14a5cf38 JH |
3079 | } |
3080 | } | |
3081 | if (fd >= 0) { | |
3082 | FILE *stdio = NULL; | |
3083 | int init = 0; | |
3b6c1aba | 3084 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3085 | init = 1; |
3086 | mode++; | |
3087 | } | |
3088 | if (init) { | |
3089 | switch (fd) { | |
3090 | case 0: | |
3091 | stdio = PerlSIO_stdin; | |
3092 | break; | |
3093 | case 1: | |
3094 | stdio = PerlSIO_stdout; | |
3095 | break; | |
3096 | case 2: | |
3097 | stdio = PerlSIO_stderr; | |
3098 | break; | |
3099 | } | |
3100 | } | |
3101 | else { | |
3102 | stdio = PerlSIO_fdopen(fd, mode = | |
3103 | PerlIOStdio_mode(mode, tmode)); | |
3104 | } | |
3105 | if (stdio) { | |
d9dac8cd NIS |
3106 | if (!f) { |
3107 | f = PerlIO_allocate(aTHX); | |
3108 | } | |
a33cf58c | 3109 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3110 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3111 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3112 | } |
14a5cf38 JH |
3113 | return f; |
3114 | } | |
3115 | } | |
3116 | } | |
ee518936 | 3117 | return NULL; |
9e353e3b NIS |
3118 | } |
3119 | ||
1751d015 | 3120 | PerlIO * |
ecdeb87c | 3121 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3122 | { |
3123 | /* This assumes no layers underneath - which is what | |
3124 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3125 | */ | |
ecdeb87c | 3126 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3127 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3128 | const int fd = fileno(stdio); |
9217ff3f | 3129 | char mode[8]; |
ecdeb87c | 3130 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3131 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3132 | if (dfd >= 0) { |
3133 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3134 | goto set_this; | |
ecdeb87c NIS |
3135 | } |
3136 | else { | |
6f207bd3 | 3137 | NOOP; |
ecdeb87c NIS |
3138 | /* FIXME: To avoid messy error recovery if dup fails |
3139 | re-use the existing stdio as though flag was not set | |
3140 | */ | |
3141 | } | |
3142 | } | |
9217ff3f NIS |
3143 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3144 | set_this: | |
694c95cf | 3145 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3146 | if(stdio) { |
3147 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3148 | } | |
1751d015 NIS |
3149 | } |
3150 | return f; | |
3151 | } | |
3152 | ||
0d7a5398 NIS |
3153 | static int |
3154 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3155 | { | |
96a5add6 AL |
3156 | PERL_UNUSED_CONTEXT; |
3157 | ||
0d7a5398 | 3158 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3159 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3160 | */ |
ef8eacb8 AT |
3161 | # if defined(__UCLIBC__) |
3162 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3163 | f->__filedes = -1; | |
3164 | return 1; | |
3165 | # elif defined(__GLIBC__) | |
0d7a5398 | 3166 | /* There may be a better way for GLIBC: |
37725cdc | 3167 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3168 | */ |
3169 | f->_fileno = -1; | |
3170 | return 1; | |
3171 | # elif defined(__sun__) | |
f5992bc4 | 3172 | PERL_UNUSED_ARG(f); |
cfedb851 | 3173 | return 0; |
0d7a5398 NIS |
3174 | # elif defined(__hpux) |
3175 | f->__fileH = 0xff; | |
3176 | f->__fileL = 0xff; | |
3177 | return 1; | |
9837d373 | 3178 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3179 | your platform does not have special entry try this one. |
9837d373 NIS |
3180 | [For OSF only have confirmation for Tru64 (alpha) |
3181 | but assume other OSFs will be similar.] | |
37725cdc | 3182 | */ |
9837d373 | 3183 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3184 | f->_file = -1; |
3185 | return 1; | |
3186 | # elif defined(__FreeBSD__) | |
3187 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3188 | - we could insert a dummy func in the _close function entry |
3189 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3190 | */ |
3191 | f->_file = -1; | |
0c49ea6a SU |
3192 | return 1; |
3193 | # elif defined(__OpenBSD__) | |
3194 | /* There may be a better way on OpenBSD: | |
3195 | - we could insert a dummy func in the _close function entry | |
3196 | f->_close = (int (*)(void *)) dummy_close; | |
3197 | */ | |
3198 | f->_file = -1; | |
0d7a5398 | 3199 | return 1; |
59ad941d IZ |
3200 | # elif defined(__EMX__) |
3201 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3202 | f->_handle = -1; | |
3203 | return 1; | |
0d7a5398 NIS |
3204 | # elif defined(__CYGWIN__) |
3205 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3206 | - we could insert a dummy func in the _close function entry |
3207 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3208 | */ |
3209 | f->_file = -1; | |
3210 | return 1; | |
3211 | # elif defined(WIN32) | |
378eeda7 | 3212 | # if defined(UNDER_CE) |
b475b3e6 JH |
3213 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3214 | structure at all | |
3215 | */ | |
0d7a5398 NIS |
3216 | # else |
3217 | f->_file = -1; | |
3218 | # endif | |
3219 | return 1; | |
3220 | # else | |
3221 | #if 0 | |
37725cdc | 3222 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3223 | (which isn't thread safe) instead |
37725cdc | 3224 | */ |
0d7a5398 NIS |
3225 | # error "Don't know how to set FILE.fileno on your platform" |
3226 | #endif | |
8772537c | 3227 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3228 | return 0; |
3229 | # endif | |
3230 | } | |
3231 | ||
1751d015 | 3232 | IV |
f62ce20a | 3233 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3234 | { |
c4420975 | 3235 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3236 | if (!stdio) { |
3237 | errno = EBADF; | |
3238 | return -1; | |
3239 | } | |
9217ff3f | 3240 | else { |
de009b76 | 3241 | const int fd = fileno(stdio); |
0d7a5398 | 3242 | int invalidate = 0; |
bbfd922f | 3243 | IV result = 0; |
1d791a44 | 3244 | int dupfd = -1; |
4ee39169 | 3245 | dSAVEDERRNO; |
a2e578da MHM |
3246 | #ifdef USE_ITHREADS |
3247 | dVAR; | |
3248 | #endif | |
0d7a5398 | 3249 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3250 | /* Socks lib overrides close() but stdio isn't linked to |
3251 | that library (though we are) - so we must call close() | |
3252 | on sockets on stdio's behalf. | |
3253 | */ | |
0d7a5398 NIS |
3254 | int optval; |
3255 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3256 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3257 | invalidate = 1; |
0d7a5398 | 3258 | #endif |
d8723f43 NC |
3259 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3260 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3261 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3262 | trying to close an already closed handle which somehow it still has | |
3263 | a reference to. (via.xs, I'm looking at you). */ | |
3264 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3265 | /* File descriptor still in use */ | |
0d7a5398 | 3266 | invalidate = 1; |
d8723f43 | 3267 | } |
0d7a5398 | 3268 | if (invalidate) { |
6b4ce6c8 AL |
3269 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3270 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3271 | return 0; | |
3272 | if (stdio == stdout || stdio == stderr) | |
3273 | return PerlIO_flush(f); | |
37725cdc NIS |
3274 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3275 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3276 | fileno slot of the FILE * | |
3277 | */ | |
bbfd922f | 3278 | result = PerlIO_flush(f); |
4ee39169 | 3279 | SAVE_ERRNO; |
6b4ce6c8 | 3280 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3281 | if (!invalidate) { |
9bab90c0 NC |
3282 | #ifdef USE_ITHREADS |
3283 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3284 | /* Right. We need a mutex here because for a brief while we |
3285 | will have the situation that fd is actually closed. Hence if | |
3286 | a second thread were to get into this block, its dup() would | |
3287 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3288 | Then if we get to the dup2() first, we blat the fd back |
3289 | (messing up its temporary as a side effect) only for it to | |
3290 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3291 | ||
3292 | /* There is, of course, a race condition, that any other thread | |
3293 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3294 | for the duration of this little manoeuvrer. Perhaps we |
3295 | should hold an IO mutex for the duration of every IO | |
3296 | operation if we know that invalidate doesn't work on this | |
3297 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3298 | |
3299 | Except that correctness trumps speed. | |
3300 | Advice from klortho #11912. */ | |
3301 | #endif | |
6b4ce6c8 | 3302 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3303 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3304 | if (dupfd < 0) { |
3305 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3306 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3307 | recover from here, or if closing this particular FILE * | |
3308 | is a good idea now. */ | |
3309 | } | |
3310 | #endif | |
3311 | } | |
94ccb807 JH |
3312 | } else { |
3313 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3314 | } |
0d7a5398 | 3315 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3316 | /* We treat error from stdio as success if we invalidated |
3317 | errno may NOT be expected EBADF | |
e8529473 NIS |
3318 | */ |
3319 | if (invalidate && result != 0) { | |
4ee39169 | 3320 | RESTORE_ERRNO; |
0d7a5398 | 3321 | result = 0; |
37725cdc | 3322 | } |
6b4ce6c8 AL |
3323 | #ifdef SOCKS5_VERSION_NAME |
3324 | /* in SOCKS' case, let close() determine return value */ | |
3325 | result = close(fd); | |
3326 | #endif | |
1d791a44 | 3327 | if (dupfd >= 0) { |
0d7a5398 | 3328 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3329 | PerlLIO_close(dupfd); |
711e8db2 | 3330 | #ifdef USE_ITHREADS |
9bab90c0 | 3331 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3332 | #endif |
9217ff3f NIS |
3333 | } |
3334 | return result; | |
37725cdc | 3335 | } |
1751d015 NIS |
3336 | } |
3337 | ||
9e353e3b | 3338 | SSize_t |
f62ce20a | 3339 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3340 | { |
97aff369 | 3341 | dVAR; |
abf9167d | 3342 | FILE * s; |
14a5cf38 | 3343 | SSize_t got = 0; |
abf9167d DM |
3344 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3345 | return -1; | |
3346 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3347 | for (;;) { |
3348 | if (count == 1) { | |
3349 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3350 | /* | |
3351 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3352 | * stdio does not do that for fread() | |
3353 | */ | |
de009b76 | 3354 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3355 | if (ch != EOF) { |
3356 | *buf = ch; | |
3357 | got = 1; | |
3358 | } | |
14a5cf38 | 3359 | } |
4d948241 NIS |
3360 | else |
3361 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3362 | if (got == 0 && PerlSIO_ferror(s)) |
3363 | got = -1; | |
42a7a32f | 3364 | if (got >= 0 || errno != EINTR) |
4d948241 | 3365 | break; |
abf9167d DM |
3366 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3367 | return -1; | |
42a7a32f | 3368 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3369 | } |
14a5cf38 | 3370 | return got; |
9e353e3b NIS |
3371 | } |
3372 | ||
3373 | SSize_t | |
f62ce20a | 3374 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3375 | { |
14a5cf38 | 3376 | SSize_t unread = 0; |
c4420975 | 3377 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3378 | |
313e59c8 | 3379 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3380 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3381 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3382 | STDCHAR *base = PerlIO_get_base(f); | |
3383 | SSize_t cnt = PerlIO_get_cnt(f); | |
3384 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3385 | SSize_t avail = ptr - base; | |
3386 | if (avail > 0) { | |
3387 | if (avail > count) { | |
3388 | avail = count; | |
3389 | } | |
3390 | ptr -= avail; | |
3391 | Move(buf-avail,ptr,avail,STDCHAR); | |
3392 | count -= avail; | |
3393 | unread += avail; | |
3394 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3395 | if (PerlSIO_feof(s) && unread >= 0) |
3396 | PerlSIO_clearerr(s); | |
3397 | } | |
3398 | } | |
313e59c8 NIS |
3399 | else |
3400 | #endif | |
3401 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3402 | /* We can get pointer to buffer but not its base |
3403 | Do ungetc() but check chars are ending up in the | |
3404 | buffer | |
3405 | */ | |
3406 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3407 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3408 | while (count > 0) { | |
de009b76 | 3409 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3410 | if (ungetc(ch,s) != ch) { |
3411 | /* ungetc did not work */ | |
3412 | break; | |
3413 | } | |
3414 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3415 | /* Did not change pointer as expected */ | |
3416 | fgetc(s); /* get char back again */ | |
3417 | break; | |
3418 | } | |
3419 | /* It worked ! */ | |
3420 | count--; | |
3421 | unread++; | |
93679785 NIS |
3422 | } |
3423 | } | |
3424 | ||
3425 | if (count > 0) { | |
3426 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3427 | } |
3428 | return unread; | |
9e353e3b NIS |
3429 | } |
3430 | ||
3431 | SSize_t | |
f62ce20a | 3432 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3433 | { |
97aff369 | 3434 | dVAR; |
4d948241 | 3435 | SSize_t got; |
abf9167d DM |
3436 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3437 | return -1; | |
4d948241 NIS |
3438 | for (;;) { |
3439 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3440 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3441 | if (got >= 0 || errno != EINTR) |
4d948241 | 3442 | break; |
abf9167d DM |
3443 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3444 | return -1; | |
42a7a32f | 3445 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3446 | } |
3447 | return got; | |
9e353e3b NIS |
3448 | } |
3449 | ||
94a175e1 | 3450 | IV |
f62ce20a | 3451 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3452 | { |
c4420975 | 3453 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3454 | PERL_UNUSED_CONTEXT; |
3455 | ||
94a175e1 | 3456 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3457 | } |
3458 | ||
3459 | Off_t | |
f62ce20a | 3460 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3461 | { |
c4420975 | 3462 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3463 | PERL_UNUSED_CONTEXT; |
3464 | ||
94a175e1 | 3465 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3466 | } |
3467 | ||
3468 | IV | |
f62ce20a | 3469 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3470 | { |
c4420975 | 3471 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3472 | PERL_UNUSED_CONTEXT; |
3473 | ||
14a5cf38 JH |
3474 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3475 | return PerlSIO_fflush(stdio); | |
3476 | } | |
3477 | else { | |
6f207bd3 | 3478 | NOOP; |
88b61e10 | 3479 | #if 0 |
14a5cf38 JH |
3480 | /* |
3481 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3482 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3483 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3484 | * layer read-to-read |
14a5cf38 JH |
3485 | */ |
3486 | /* | |
71200d45 | 3487 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3488 | */ |
4ee39169 | 3489 | dSAVE_ERRNO; |
14a5cf38 | 3490 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3491 | RESTORE_ERRNO; |
88b61e10 | 3492 | #endif |
14a5cf38 JH |
3493 | } |
3494 | return 0; | |
9e353e3b NIS |
3495 | } |
3496 | ||
3497 | IV | |
f62ce20a | 3498 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3499 | { |
96a5add6 AL |
3500 | PERL_UNUSED_CONTEXT; |
3501 | ||
14a5cf38 | 3502 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3503 | } |
3504 | ||
3505 | IV | |
f62ce20a | 3506 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3507 | { |
96a5add6 AL |
3508 | PERL_UNUSED_CONTEXT; |
3509 | ||
263df5f1 | 3510 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3511 | } |
3512 | ||
3513 | void | |
f62ce20a | 3514 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3515 | { |
96a5add6 AL |
3516 | PERL_UNUSED_CONTEXT; |
3517 | ||
14a5cf38 | 3518 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3519 | } |
3520 | ||
3521 | void | |
f62ce20a | 3522 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3523 | { |
96a5add6 AL |
3524 | PERL_UNUSED_CONTEXT; |
3525 | ||
9e353e3b | 3526 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3527 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3528 | #else |
bd61b366 | 3529 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3530 | #endif |
3531 | } | |
3532 | ||
3533 | #ifdef FILE_base | |
3534 | STDCHAR * | |
f62ce20a | 3535 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3536 | { |
c4420975 | 3537 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3538 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3539 | } |
3540 | ||
3541 | Size_t | |
f62ce20a | 3542 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3543 | { |
c4420975 | 3544 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3545 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3546 | } |
3547 | #endif | |
3548 | ||
3549 | #ifdef USE_STDIO_PTR | |
3550 | STDCHAR * | |
f62ce20a | 3551 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3552 | { |
c4420975 | 3553 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3554 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3555 | } |
3556 | ||
3557 | SSize_t | |
f62ce20a | 3558 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3559 | { |
c4420975 | 3560 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3561 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3562 | } |
3563 | ||
3564 | void | |
f62ce20a | 3565 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3566 | { |
c4420975 | 3567 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3568 | if (ptr != NULL) { |
9e353e3b | 3569 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3570 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3571 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3572 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3573 | #endif |
3574 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3575 | /* |
71200d45 | 3576 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3577 | */ |
3578 | return; | |
9e353e3b | 3579 | #endif |
22569500 | 3580 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3581 | PerlProc_abort(); |
22569500 | 3582 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3583 | } |
3584 | /* | |
71200d45 | 3585 | * Now (or only) set cnt |
14a5cf38 | 3586 | */ |
9e353e3b | 3587 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3588 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3589 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3590 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3591 | PerlSIO_set_ptr(stdio, |
3592 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3593 | cnt)); | |
22569500 | 3594 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3595 | PerlProc_abort(); |
22569500 NIS |
3596 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3597 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3598 | } |
3599 | ||
93679785 | 3600 | |
9e353e3b NIS |
3601 | #endif |
3602 | ||
93679785 NIS |
3603 | IV |
3604 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3605 | { | |
abf9167d | 3606 | FILE * stdio; |
93679785 | 3607 | int c; |
96a5add6 | 3608 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3609 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3610 | return -1; | |
3611 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3612 | |
93679785 NIS |
3613 | /* |
3614 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3615 | */ | |
3616 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3617 | if (PerlSIO_fflush(stdio) != 0) | |
3618 | return EOF; | |
3619 | } | |
f3be3723 BL |
3620 | for (;;) { |
3621 | c = PerlSIO_fgetc(stdio); | |
3622 | if (c != EOF) | |
3623 | break; | |
3624 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3625 | return EOF; | |
abf9167d DM |
3626 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3627 | return -1; | |
f3be3723 BL |
3628 | SETERRNO(0,0); |
3629 | } | |
93679785 NIS |
3630 | |
3631 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3632 | |
3633 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3634 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3635 | /* Fake ungetc() to the real buffer in case system's ungetc |
3636 | goes elsewhere | |
3637 | */ | |
3638 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3639 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3640 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3641 | if (ptr == base+1) { | |
3642 | *--ptr = (STDCHAR) c; | |
3643 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3644 | if (PerlSIO_feof(stdio)) | |
3645 | PerlSIO_clearerr(stdio); | |
3646 | return 0; | |
3647 | } | |
3648 | } | |
313e59c8 NIS |
3649 | else |
3650 | #endif | |
3651 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3652 | STDCHAR ch = c; |
3653 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3654 | return 0; | |
3655 | } | |
3656 | } | |
93679785 NIS |
3657 | #endif |
3658 | ||
3659 | #if defined(VMS) | |
3660 | /* An ungetc()d char is handled separately from the regular | |
3661 | * buffer, so we stuff it in the buffer ourselves. | |
3662 | * Should never get called as should hit code above | |
3663 | */ | |
bad9695d NIS |
3664 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3665 | (*stdio)->_cnt++; | |
93679785 NIS |
3666 | #else |
3667 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3668 | using ungetc(). |
93679785 NIS |
3669 | */ |
3670 | if (PerlSIO_ungetc(c, stdio) != c) | |
3671 | return EOF; | |
3672 | #endif | |
3673 | return 0; | |
3674 | } | |
3675 | ||
3676 | ||
3677 | ||
27da23d5 | 3678 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3679 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3680 | "stdio", |
3681 | sizeof(PerlIOStdio), | |
86e05cf2 | 3682 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3683 | PerlIOStdio_pushed, |
2376d97d | 3684 | PerlIOBase_popped, |
14a5cf38 | 3685 | PerlIOStdio_open, |
86e05cf2 | 3686 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3687 | NULL, |
3688 | PerlIOStdio_fileno, | |
71200d45 | 3689 | PerlIOStdio_dup, |
14a5cf38 JH |
3690 | PerlIOStdio_read, |
3691 | PerlIOStdio_unread, | |
3692 | PerlIOStdio_write, | |
3693 | PerlIOStdio_seek, | |
3694 | PerlIOStdio_tell, | |
3695 | PerlIOStdio_close, | |
3696 | PerlIOStdio_flush, | |
3697 | PerlIOStdio_fill, | |
3698 | PerlIOStdio_eof, | |
3699 | PerlIOStdio_error, | |
3700 | PerlIOStdio_clearerr, | |
3701 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3702 | #ifdef FILE_base |
14a5cf38 JH |
3703 | PerlIOStdio_get_base, |
3704 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3705 | #else |
14a5cf38 JH |
3706 | NULL, |
3707 | NULL, | |
9e353e3b NIS |
3708 | #endif |
3709 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3710 | PerlIOStdio_get_ptr, |
3711 | PerlIOStdio_get_cnt, | |
15b61c98 | 3712 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3713 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3714 | # else |
3715 | NULL, | |
3716 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3717 | #else | |
3718 | NULL, | |
14a5cf38 JH |
3719 | NULL, |
3720 | NULL, | |
15b61c98 | 3721 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3722 | }; |
3723 | ||
b9d6bf13 JH |
3724 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3725 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3726 | FILE * |
81428673 | 3727 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3728 | { |
e87a358a | 3729 | dTHX; |
81428673 NIS |
3730 | FILE *stdio = NULL; |
3731 | if (PerlIOValid(f)) { | |
3732 | char buf[8]; | |
3733 | PerlIO_flush(f); | |
3734 | if (!mode || !*mode) { | |
3735 | mode = PerlIO_modestr(f, buf); | |
3736 | } | |
3737 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3738 | if (stdio) { | |
3739 | PerlIOl *l = *f; | |
9f75cc58 | 3740 | PerlIO *f2; |
81428673 NIS |
3741 | /* De-link any lower layers so new :stdio sticks */ |
3742 | *f = NULL; | |
a0714e2c | 3743 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3744 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3745 | s->stdio = stdio; |
6b54a403 | 3746 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3747 | /* Link previous lower layers under new one */ |
3748 | *PerlIONext(f) = l; | |
3749 | } | |
3750 | else { | |
3751 | /* restore layers list */ | |
3752 | *f = l; | |
3753 | } | |
a33cf58c | 3754 | } |
14a5cf38 JH |
3755 | } |
3756 | return stdio; | |
9e353e3b NIS |
3757 | } |
3758 | ||
81428673 | 3759 | |
9e353e3b NIS |
3760 | FILE * |
3761 | PerlIO_findFILE(PerlIO *f) | |
3762 | { | |
14a5cf38 | 3763 | PerlIOl *l = *f; |
bbbc33d0 | 3764 | FILE *stdio; |
14a5cf38 JH |
3765 | while (l) { |
3766 | if (l->tab == &PerlIO_stdio) { | |
3767 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3768 | return s->stdio; | |
3769 | } | |
3770 | l = *PerlIONext(&l); | |
f7e7eb72 | 3771 | } |
4b069b44 | 3772 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3773 | /* However, we're not really exporting a FILE * to someone else (who |
3774 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3775 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3776 | descriptor. We have to do this, because if the loop above returns you |
3777 | the FILE *, then *it* didn't increase any reference count. So there's | |
3778 | only one way to be consistent. */ | |
3779 | stdio = PerlIO_exportFILE(f, NULL); | |
3780 | if (stdio) { | |
3781 | const int fd = fileno(stdio); | |
3782 | if (fd >= 0) | |
3783 | PerlIOUnix_refcnt_dec(fd); | |
3784 | } | |
3785 | return stdio; | |
9e353e3b NIS |
3786 | } |
3787 | ||
b9d6bf13 | 3788 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3789 | void |
3790 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3791 | { | |
27da23d5 | 3792 | dVAR; |
22569500 NIS |
3793 | PerlIOl *l; |
3794 | while ((l = *p)) { | |
3795 | if (l->tab == &PerlIO_stdio) { | |
3796 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3797 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3798 | const int fd = fileno(f); |
3799 | if (fd >= 0) | |
3800 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3801 | { |
3802 | dTHX; | |
3803 | PerlIO_pop(aTHX_ p); | |
3804 | } | |
22569500 NIS |
3805 | return; |
3806 | } | |
3807 | } | |
3808 | p = PerlIONext(p); | |
3809 | } | |
3810 | return; | |
9e353e3b NIS |
3811 | } |
3812 | ||
3813 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3814 | /* |
71200d45 | 3815 | * perlio buffer layer |
14a5cf38 | 3816 | */ |
9e353e3b | 3817 | |
5e2ab84b | 3818 | IV |
2dc2558e | 3819 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3820 | { |
14a5cf38 | 3821 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3822 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3823 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3824 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3825 | } | |
4b069b44 | 3826 | if (*PerlIONext(f)) { |
de009b76 | 3827 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3828 | if (posn != (Off_t) - 1) { |
3829 | b->posn = posn; | |
3830 | } | |
14a5cf38 | 3831 | } |
2dc2558e | 3832 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3833 | } |
3834 | ||
9e353e3b | 3835 | PerlIO * |
14a5cf38 JH |
3836 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3837 | IV n, const char *mode, int fd, int imode, int perm, | |
3838 | PerlIO *f, int narg, SV **args) | |
3839 | { | |
04892f78 | 3840 | if (PerlIOValid(f)) { |
14a5cf38 | 3841 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3842 | PerlIO_funcs *tab = |
3843 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3844 | if (tab && tab->Open) | |
3845 | next = | |
3846 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3847 | next, narg, args); | |
2dc2558e | 3848 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3849 | return NULL; |
3850 | } | |
3851 | } | |
3852 | else { | |
04892f78 | 3853 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3854 | int init = 0; |
3b6c1aba | 3855 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3856 | init = 1; |
3857 | /* | |
71200d45 | 3858 | * mode++; |
14a5cf38 JH |
3859 | */ |
3860 | } | |
67363c0d JH |
3861 | if (tab && tab->Open) |
3862 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3863 | f, narg, args); | |
3864 | else | |
3865 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3866 | if (f) { |
22569500 | 3867 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3868 | /* |
3869 | * if push fails during open, open fails. close will pop us. | |
3870 | */ | |
3871 | PerlIO_close (f); | |
3872 | return NULL; | |
3873 | } else { | |
3874 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3875 | if (init && fd == 2) { |
3876 | /* | |
3877 | * Initial stderr is unbuffered | |
3878 | */ | |
3879 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3880 | } | |
23b84778 IZ |
3881 | #ifdef PERLIO_USING_CRLF |
3882 | # ifdef PERLIO_IS_BINMODE_FD | |
3883 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3884 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3885 | else |
3886 | # endif | |
3887 | /* | |
3888 | * do something about failing setmode()? --jhi | |
3889 | */ | |
3890 | PerlLIO_setmode(fd, O_BINARY); | |
3891 | #endif | |
8c8488cd | 3892 | #ifdef VMS |
8c8488cd CB |
3893 | /* Enable line buffering with record-oriented regular files |
3894 | * so we don't introduce an extraneous record boundary when | |
3895 | * the buffer fills up. | |
3896 | */ | |
3897 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3898 | Stat_t st; | |
3899 | if (PerlLIO_fstat(fd, &st) == 0 | |
3900 | && S_ISREG(st.st_mode) | |
3901 | && (st.st_fab_rfm == FAB$C_VAR | |
3902 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3903 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3904 | } | |
3905 | } | |
3906 | #endif | |
14a5cf38 JH |
3907 | } |
3908 | } | |
ee518936 | 3909 | } |
14a5cf38 | 3910 | return f; |
9e353e3b NIS |
3911 | } |
3912 | ||
14a5cf38 JH |
3913 | /* |
3914 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3915 | * read or write state. For write state, we put the postponed data through |
3916 | * the next layers. For read state, we seek() the next layers to the | |
3917 | * offset given by current position in the buffer, and discard the buffer | |
3918 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3919 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3920 | */ |
9e353e3b | 3921 | IV |
f62ce20a | 3922 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3923 | { |
dcda55fc | 3924 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3925 | int code = 0; |
04892f78 | 3926 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3927 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3928 | /* | |
71200d45 | 3929 | * write() the buffer |
14a5cf38 | 3930 | */ |
de009b76 AL |
3931 | const STDCHAR *buf = b->buf; |
3932 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3933 | while (p < b->ptr) { |
3934 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3935 | if (count > 0) { | |
3936 | p += count; | |
3937 | } | |
3938 | else if (count < 0 || PerlIO_error(n)) { | |
3939 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3940 | code = -1; | |
3941 | break; | |
3942 | } | |
3943 | } | |
3944 | b->posn += (p - buf); | |
3945 | } | |
3946 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3947 | STDCHAR *buf = PerlIO_get_base(f); | |
3948 | /* | |
71200d45 | 3949 | * Note position change |
14a5cf38 JH |
3950 | */ |
3951 | b->posn += (b->ptr - buf); | |
3952 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3953 | /* We did not consume all of it - try and seek downstream to |
3954 | our logical position | |
14a5cf38 | 3955 | */ |
4b069b44 | 3956 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3957 | /* Reload n as some layers may pop themselves on seek */ |
3958 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3959 | } |
ba5c3fe9 | 3960 | else { |
4b069b44 NIS |
3961 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3962 | data is lost for good - so return saying "ok" having undone | |
3963 | the position adjust | |
3964 | */ | |
3965 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3966 | return code; |
3967 | } | |
14a5cf38 JH |
3968 | } |
3969 | } | |
3970 | b->ptr = b->end = b->buf; | |
3971 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3972 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3973 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3974 | code = -1; |
3975 | return code; | |
6f9d8c32 NIS |
3976 | } |
3977 | ||
93c2c2ec IZ |
3978 | /* This discards the content of the buffer after b->ptr, and rereads |
3979 | * the buffer from the position off in the layer downstream; here off | |
3980 | * is at offset corresponding to b->ptr - b->buf. | |
3981 | */ | |
06da4f11 | 3982 | IV |
f62ce20a | 3983 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3984 | { |
dcda55fc | 3985 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3986 | PerlIO *n = PerlIONext(f); |
3987 | SSize_t avail; | |
3988 | /* | |
4b069b44 NIS |
3989 | * Down-stream flush is defined not to loose read data so is harmless. |
3990 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3991 | */ |
93c2c2ec | 3992 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3993 | return -1; |
3994 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3995 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3996 | |
3997 | if (!b->buf) | |
22569500 | 3998 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3999 | |
0f0eef27 | 4000 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4001 | |
14a5cf38 | 4002 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4003 | |
4004 | if (!PerlIOValid(n)) { | |
4005 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4006 | return -1; | |
4007 | } | |
4008 | ||
14a5cf38 JH |
4009 | if (PerlIO_fast_gets(n)) { |
4010 | /* | |
04892f78 | 4011 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4012 | * ->Read() because that will loop till it gets what we asked for |
4013 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4014 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4015 | */ |
4016 | avail = PerlIO_get_cnt(n); | |
4017 | if (avail <= 0) { | |
4018 | avail = PerlIO_fill(n); | |
4019 | if (avail == 0) | |
4020 | avail = PerlIO_get_cnt(n); | |
4021 | else { | |
4022 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4023 | avail = 0; | |
4024 | } | |
4025 | } | |
4026 | if (avail > 0) { | |
4027 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4028 | const SSize_t cnt = avail; |
eb160463 | 4029 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4030 | avail = b->bufsiz; |
4031 | Copy(ptr, b->buf, avail, STDCHAR); | |
4032 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4033 | } | |
4034 | } | |
4035 | else { | |
4036 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4037 | } | |
4038 | if (avail <= 0) { | |
4039 | if (avail == 0) | |
4040 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4041 | else | |
4042 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
4043 | return -1; | |
4044 | } | |
4045 | b->end = b->buf + avail; | |
4046 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4047 | return 0; | |
06da4f11 NIS |
4048 | } |
4049 | ||
6f9d8c32 | 4050 | SSize_t |
f62ce20a | 4051 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4052 | { |
04892f78 | 4053 | if (PerlIOValid(f)) { |
dcda55fc | 4054 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4055 | if (!b->ptr) |
4056 | PerlIO_get_base(f); | |
f62ce20a | 4057 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4058 | } |
4059 | return 0; | |
6f9d8c32 NIS |
4060 | } |
4061 | ||
9e353e3b | 4062 | SSize_t |
f62ce20a | 4063 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4064 | { |
14a5cf38 | 4065 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4066 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4067 | SSize_t unread = 0; |
4068 | SSize_t avail; | |
4069 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4070 | PerlIO_flush(f); | |
4071 | if (!b->buf) | |
4072 | PerlIO_get_base(f); | |
4073 | if (b->buf) { | |
4074 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4075 | /* | |
4076 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4077 | * which have been read back to buffer start |
14a5cf38 JH |
4078 | */ |
4079 | avail = (b->ptr - b->buf); | |
4080 | } | |
4081 | else { | |
4082 | /* | |
4083 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4084 | * unread |
14a5cf38 JH |
4085 | */ |
4086 | avail = b->bufsiz; | |
4087 | b->end = b->buf + avail; | |
4088 | b->ptr = b->end; | |
4089 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4090 | /* | |
71200d45 | 4091 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4092 | */ |
4093 | b->posn -= b->bufsiz; | |
4094 | } | |
94e529cc | 4095 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4096 | /* |
71200d45 | 4097 | * If we have space for more than count, just move count |
14a5cf38 JH |
4098 | */ |
4099 | avail = count; | |
4100 | } | |
4101 | if (avail > 0) { | |
4102 | b->ptr -= avail; | |
4103 | buf -= avail; | |
4104 | /* | |
4105 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4106 | * there |
14a5cf38 JH |
4107 | */ |
4108 | if (buf != b->ptr) { | |
4109 | Copy(buf, b->ptr, avail, STDCHAR); | |
4110 | } | |
4111 | count -= avail; | |
4112 | unread += avail; | |
4113 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4114 | } | |
4115 | } | |
93679785 NIS |
4116 | if (count > 0) { |
4117 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4118 | } | |
14a5cf38 | 4119 | return unread; |
760ac839 LW |
4120 | } |
4121 | ||
9e353e3b | 4122 | SSize_t |
f62ce20a | 4123 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4124 | { |
de009b76 | 4125 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4126 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4127 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4128 | Size_t written = 0; |
4129 | if (!b->buf) | |
4130 | PerlIO_get_base(f); | |
4131 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4132 | return 0; | |
0678cb22 NIS |
4133 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4134 | if (PerlIO_flush(f) != 0) { | |
4135 | return 0; | |
4136 | } | |
4137 | } | |
ee56a6b9 CS |
4138 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4139 | flushptr = buf + count; | |
4140 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4141 | --flushptr; | |
4142 | } | |
14a5cf38 JH |
4143 | while (count > 0) { |
4144 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4145 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4146 | avail = count; |
ee56a6b9 CS |
4147 | if (flushptr > buf && flushptr <= buf + avail) |
4148 | avail = flushptr - buf; | |
14a5cf38 | 4149 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4150 | if (avail) { |
4151 | Copy(buf, b->ptr, avail, STDCHAR); | |
4152 | count -= avail; | |
4153 | buf += avail; | |
4154 | written += avail; | |
4155 | b->ptr += avail; | |
4156 | if (buf == flushptr) | |
4157 | PerlIO_flush(f); | |
14a5cf38 JH |
4158 | } |
4159 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4160 | if (PerlIO_flush(f) == -1) |
4161 | return -1; | |
14a5cf38 JH |
4162 | } |
4163 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4164 | PerlIO_flush(f); | |
4165 | return written; | |
9e353e3b NIS |
4166 | } |
4167 | ||
94a175e1 | 4168 | IV |
f62ce20a | 4169 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4170 | { |
14a5cf38 JH |
4171 | IV code; |
4172 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4173 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4174 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4175 | if (code == 0) { | |
de009b76 | 4176 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4177 | b->posn = PerlIO_tell(PerlIONext(f)); |
4178 | } | |
9e353e3b | 4179 | } |
14a5cf38 | 4180 | return code; |
9e353e3b NIS |
4181 | } |
4182 | ||
4183 | Off_t | |
f62ce20a | 4184 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4185 | { |
dcda55fc | 4186 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4187 | /* |
71200d45 | 4188 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4189 | */ |
4190 | Off_t posn = b->posn; | |
37725cdc | 4191 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4192 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4193 | #if 1 | |
4194 | /* As O_APPEND files are normally shared in some sense it is better | |
4195 | to flush : | |
4196 | */ | |
4197 | PerlIO_flush(f); | |
4198 | #else | |
37725cdc | 4199 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4200 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4201 | #endif | |
4202 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4203 | } | |
14a5cf38 JH |
4204 | if (b->buf) { |
4205 | /* | |
71200d45 | 4206 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4207 | */ |
4208 | posn += (b->ptr - b->buf); | |
4209 | } | |
4210 | return posn; | |
9e353e3b NIS |
4211 | } |
4212 | ||
4213 | IV | |
44798d05 NIS |
4214 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4215 | { | |
de009b76 AL |
4216 | const IV code = PerlIOBase_popped(aTHX_ f); |
4217 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4218 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4219 | Safefree(b->buf); | |
4220 | } | |
dcda55fc | 4221 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4222 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4223 | return code; | |
4224 | } | |
4225 | ||
4226 | IV | |
f62ce20a | 4227 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4228 | { |
de009b76 AL |
4229 | const IV code = PerlIOBase_close(aTHX_ f); |
4230 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4231 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4232 | Safefree(b->buf); |
14a5cf38 | 4233 | } |
dcda55fc | 4234 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4235 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4236 | return code; | |
760ac839 LW |
4237 | } |
4238 | ||
9e353e3b | 4239 | STDCHAR * |
f62ce20a | 4240 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4241 | { |
dcda55fc | 4242 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4243 | if (!b->buf) |
4244 | PerlIO_get_base(f); | |
4245 | return b->ptr; | |
9e353e3b NIS |
4246 | } |
4247 | ||
05d1247b | 4248 | SSize_t |
f62ce20a | 4249 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4250 | { |
dcda55fc | 4251 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4252 | if (!b->buf) |
4253 | PerlIO_get_base(f); | |
4254 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4255 | return (b->end - b->ptr); | |
4256 | return 0; | |
9e353e3b NIS |
4257 | } |
4258 | ||
4259 | STDCHAR * | |
f62ce20a | 4260 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4261 | { |
dcda55fc | 4262 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4263 | PERL_UNUSED_CONTEXT; |
4264 | ||
14a5cf38 JH |
4265 | if (!b->buf) { |
4266 | if (!b->bufsiz) | |
1810cd7c | 4267 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4268 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4269 | if (!b->buf) { |
4270 | b->buf = (STDCHAR *) & b->oneword; | |
4271 | b->bufsiz = sizeof(b->oneword); | |
4272 | } | |
dcda55fc | 4273 | b->end = b->ptr = b->buf; |
06da4f11 | 4274 | } |
14a5cf38 | 4275 | return b->buf; |
9e353e3b NIS |
4276 | } |
4277 | ||
4278 | Size_t | |
f62ce20a | 4279 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4280 | { |
dcda55fc | 4281 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4282 | if (!b->buf) |
4283 | PerlIO_get_base(f); | |
4284 | return (b->end - b->buf); | |
9e353e3b NIS |
4285 | } |
4286 | ||
4287 | void | |
f62ce20a | 4288 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4289 | { |
dcda55fc | 4290 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4291 | #ifndef DEBUGGING |
4292 | PERL_UNUSED_ARG(cnt); | |
4293 | #endif | |
14a5cf38 JH |
4294 | if (!b->buf) |
4295 | PerlIO_get_base(f); | |
4296 | b->ptr = ptr; | |
b727803b RGS |
4297 | assert(PerlIO_get_cnt(f) == cnt); |
4298 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4299 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4300 | } |
4301 | ||
71200d45 | 4302 | PerlIO * |
ecdeb87c | 4303 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4304 | { |
ecdeb87c | 4305 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4306 | } |
4307 | ||
4308 | ||
4309 | ||
27da23d5 | 4310 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4311 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4312 | "perlio", |
4313 | sizeof(PerlIOBuf), | |
86e05cf2 | 4314 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4315 | PerlIOBuf_pushed, |
44798d05 | 4316 | PerlIOBuf_popped, |
14a5cf38 | 4317 | PerlIOBuf_open, |
86e05cf2 | 4318 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4319 | NULL, |
4320 | PerlIOBase_fileno, | |
71200d45 | 4321 | PerlIOBuf_dup, |
14a5cf38 JH |
4322 | PerlIOBuf_read, |
4323 | PerlIOBuf_unread, | |
4324 | PerlIOBuf_write, | |
4325 | PerlIOBuf_seek, | |
4326 | PerlIOBuf_tell, | |
4327 | PerlIOBuf_close, | |
4328 | PerlIOBuf_flush, | |
4329 | PerlIOBuf_fill, | |
4330 | PerlIOBase_eof, | |
4331 | PerlIOBase_error, | |
4332 | PerlIOBase_clearerr, | |
4333 | PerlIOBase_setlinebuf, | |
4334 | PerlIOBuf_get_base, | |
4335 | PerlIOBuf_bufsiz, | |
4336 | PerlIOBuf_get_ptr, | |
4337 | PerlIOBuf_get_cnt, | |
4338 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4339 | }; |
4340 | ||
66ecd56b | 4341 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4342 | /* |
71200d45 | 4343 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4344 | */ |
5e2ab84b NIS |
4345 | |
4346 | IV | |
f62ce20a | 4347 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4348 | { |
14a5cf38 | 4349 | /* |
71200d45 | 4350 | * Should never happen |
14a5cf38 JH |
4351 | */ |
4352 | PerlIO_flush(f); | |
4353 | return 0; | |
5e2ab84b NIS |
4354 | } |
4355 | ||
4356 | IV | |
f62ce20a | 4357 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4358 | { |
14a5cf38 | 4359 | /* |
71200d45 | 4360 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4361 | */ |
4362 | PerlIO_flush(f); | |
4363 | return PerlIO_close(f); | |
5e2ab84b NIS |
4364 | } |
4365 | ||
94a175e1 | 4366 | IV |
f62ce20a | 4367 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4368 | { |
14a5cf38 | 4369 | /* |
71200d45 | 4370 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4371 | */ |
4372 | PerlIO_flush(f); | |
4373 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4374 | } |
4375 | ||
4376 | ||
4377 | IV | |
f62ce20a | 4378 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4379 | { |
dcda55fc | 4380 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4381 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4382 | Safefree(b->buf); |
14a5cf38 JH |
4383 | b->buf = NULL; |
4384 | } | |
4385 | PerlIO_pop(aTHX_ f); | |
4386 | return 0; | |
5e2ab84b NIS |
4387 | } |
4388 | ||
4389 | void | |
f62ce20a | 4390 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4391 | { |
14a5cf38 JH |
4392 | if (cnt <= 0) { |
4393 | PerlIO_flush(f); | |
4394 | } | |
4395 | else { | |
f62ce20a | 4396 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4397 | } |
5e2ab84b NIS |
4398 | } |
4399 | ||
4400 | IV | |
2dc2558e | 4401 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4402 | { |
de009b76 | 4403 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4404 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4405 | /* |
71200d45 NIS |
4406 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4407 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4408 | */ |
4409 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4410 | (PerlIOBase(PerlIONext(f))-> | |
4411 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4412 | return code; | |
5e2ab84b NIS |
4413 | } |
4414 | ||
4415 | SSize_t | |
f62ce20a | 4416 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4417 | { |
14a5cf38 JH |
4418 | SSize_t avail = PerlIO_get_cnt(f); |
4419 | SSize_t got = 0; | |
94e529cc | 4420 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4421 | avail = count; |
4422 | if (avail > 0) | |
f62ce20a | 4423 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4424 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4425 | const SSize_t more = |
14a5cf38 JH |
4426 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4427 | if (more >= 0 || got == 0) | |
4428 | got += more; | |
4429 | } | |
4430 | return got; | |
5e2ab84b NIS |
4431 | } |
4432 | ||
27da23d5 | 4433 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4434 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4435 | "pending", |
4436 | sizeof(PerlIOBuf), | |
86e05cf2 | 4437 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4438 | PerlIOPending_pushed, |
44798d05 | 4439 | PerlIOBuf_popped, |
14a5cf38 | 4440 | NULL, |
86e05cf2 | 4441 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4442 | NULL, |
4443 | PerlIOBase_fileno, | |
71200d45 | 4444 | PerlIOBuf_dup, |
14a5cf38 JH |
4445 | PerlIOPending_read, |
4446 | PerlIOBuf_unread, | |
4447 | PerlIOBuf_write, | |
4448 | PerlIOPending_seek, | |
4449 | PerlIOBuf_tell, | |
4450 | PerlIOPending_close, | |
4451 | PerlIOPending_flush, | |
4452 | PerlIOPending_fill, | |
4453 | PerlIOBase_eof, | |
4454 | PerlIOBase_error, | |
4455 | PerlIOBase_clearerr, | |
4456 | PerlIOBase_setlinebuf, | |
4457 | PerlIOBuf_get_base, | |
4458 | PerlIOBuf_bufsiz, | |
4459 | PerlIOBuf_get_ptr, | |
4460 | PerlIOBuf_get_cnt, | |
4461 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4462 | }; |
4463 | ||
4464 | ||
4465 | ||
4466 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4467 | /* |
4468 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4469 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4470 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4471 | * |
4472 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4473 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4474 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4475 | * that it ends at c->nl; these two cases can be distinguished by | |
4476 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4477 | * _unread() and _flush() calls. | |
4478 | * It only matters for read operations. | |
66ecd56b NIS |
4479 | */ |
4480 | ||
14a5cf38 | 4481 | typedef struct { |
22569500 NIS |
4482 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4483 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4484 | * buffer */ |
99efab12 NIS |
4485 | } PerlIOCrlf; |
4486 | ||
ff1e3883 JD |
4487 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4488 | * Otherwise the :crlf layer would always revert back to | |
4489 | * raw mode. | |
4490 | */ | |
4491 | static void | |
4492 | S_inherit_utf8_flag(PerlIO *f) | |
4493 | { | |
4494 | PerlIO *g = PerlIONext(f); | |
4495 | if (PerlIOValid(g)) { | |
4496 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4497 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4498 | } | |
4499 | } | |
4500 | } | |
4501 | ||
f5b9d040 | 4502 | IV |
2dc2558e | 4503 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4504 | { |
14a5cf38 JH |
4505 | IV code; |
4506 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4507 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4508 | #if 0 |
14a5cf38 | 4509 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4510 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4511 | PerlIOBase(f)->flags); |
5e2ab84b | 4512 | #endif |
8229d19f | 4513 | { |
5da08ab0 LT |
4514 | /* If the old top layer is a CRLF layer, reactivate it (if |
4515 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4516 | PerlIO *g = PerlIONext(f); |
7826b36f | 4517 | if (PerlIOValid(g)) { |
8229d19f JH |
4518 | PerlIOl *b = PerlIOBase(g); |
4519 | if (b && b->tab == &PerlIO_crlf) { | |
4520 | if (!(b->flags & PERLIO_F_CRLF)) | |
4521 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4522 | S_inherit_utf8_flag(g); |
8229d19f JH |
4523 | PerlIO_pop(aTHX_ f); |
4524 | return code; | |
7826b36f | 4525 | } |
8229d19f JH |
4526 | } |
4527 | } | |
ff1e3883 | 4528 | S_inherit_utf8_flag(f); |
14a5cf38 | 4529 | return code; |
f5b9d040 NIS |
4530 | } |
4531 | ||
4532 | ||
99efab12 | 4533 | SSize_t |
f62ce20a | 4534 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4535 | { |
dcda55fc | 4536 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4537 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4538 | *(c->nl) = 0xd; |
4539 | c->nl = NULL; | |
4540 | } | |
4541 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4542 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4543 | else { |
4544 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4545 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4546 | SSize_t unread = 0; | |
4547 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4548 | PerlIO_flush(f); | |
4549 | if (!b->buf) | |
4550 | PerlIO_get_base(f); | |
4551 | if (b->buf) { | |
4552 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4553 | b->end = b->ptr = b->buf + b->bufsiz; | |
4554 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4555 | b->posn -= b->bufsiz; | |
4556 | } | |
4557 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4558 | const int ch = *--buf; |
14a5cf38 JH |
4559 | if (ch == '\n') { |
4560 | if (b->ptr - 2 >= b->buf) { | |
4561 | *--(b->ptr) = 0xa; | |
4562 | *--(b->ptr) = 0xd; | |
4563 | unread++; | |
4564 | count--; | |
4565 | } | |
4566 | else { | |
93c2c2ec IZ |
4567 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4568 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4569 | unread++; | |
4570 | count--; | |
14a5cf38 JH |
4571 | } |
4572 | } | |
4573 | else { | |
4574 | *--(b->ptr) = ch; | |
4575 | unread++; | |
4576 | count--; | |
4577 | } | |
4578 | } | |
4579 | } | |
ec1da995 LT |
4580 | if (count > 0) |
4581 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4582 | return unread; |
4583 | } | |
99efab12 NIS |
4584 | } |
4585 | ||
93c2c2ec | 4586 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4587 | SSize_t |
f62ce20a | 4588 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4589 | { |
dcda55fc | 4590 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4591 | if (!b->buf) |
4592 | PerlIO_get_base(f); | |
4593 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4594 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4595 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4596 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4597 | scan: |
4598 | while (nl < b->end && *nl != 0xd) | |
4599 | nl++; | |
4600 | if (nl < b->end && *nl == 0xd) { | |
4601 | test: | |
4602 | if (nl + 1 < b->end) { | |
4603 | if (nl[1] == 0xa) { | |
4604 | *nl = '\n'; | |
4605 | c->nl = nl; | |
4606 | } | |
4607 | else { | |
4608 | /* | |
71200d45 | 4609 | * Not CR,LF but just CR |
14a5cf38 JH |
4610 | */ |
4611 | nl++; | |
4612 | goto scan; | |
4613 | } | |
4614 | } | |
4615 | else { | |
4616 | /* | |
71200d45 | 4617 | * Blast - found CR as last char in buffer |
14a5cf38 | 4618 | */ |
e87a358a | 4619 | |
14a5cf38 JH |
4620 | if (b->ptr < nl) { |
4621 | /* | |
4622 | * They may not care, defer work as long as | |
71200d45 | 4623 | * possible |
14a5cf38 | 4624 | */ |
a0d1d361 | 4625 | c->nl = nl; |
14a5cf38 JH |
4626 | return (nl - b->ptr); |
4627 | } | |
4628 | else { | |
4629 | int code; | |
22569500 | 4630 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4631 | * flush() is concerned */ |
22569500 | 4632 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4633 | /* Note as we have moved buf up flush's |
4634 | posn += ptr-buf | |
4635 | will naturally make posn point at CR | |
4636 | */ | |
22569500 NIS |
4637 | b->bufsiz--; /* Buffer is thus smaller */ |
4638 | code = PerlIO_fill(f); /* Fetch some more */ | |
4639 | b->bufsiz++; /* Restore size for next time */ | |
4640 | b->buf--; /* Point at space */ | |
4641 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4642 | * off */ |
22569500 | 4643 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4644 | if (code == 0) |
22569500 | 4645 | goto test; /* fill() call worked */ |
14a5cf38 | 4646 | /* |
71200d45 | 4647 | * CR at EOF - just fall through |
14a5cf38 | 4648 | */ |
a0d1d361 | 4649 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4650 | } |
4651 | } | |
4652 | } | |
4653 | } | |
4654 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4655 | } | |
4656 | return 0; | |
99efab12 NIS |
4657 | } |
4658 | ||
4659 | void | |
f62ce20a | 4660 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4661 | { |
dcda55fc AL |
4662 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4663 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4664 | if (!b->buf) |
4665 | PerlIO_get_base(f); | |
4666 | if (!ptr) { | |
a0d1d361 | 4667 | if (c->nl) { |
14a5cf38 | 4668 | ptr = c->nl + 1; |
22569500 | 4669 | if (ptr == b->end && *c->nl == 0xd) { |
486ec47a | 4670 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4671 | ptr--; |
4672 | } | |
4673 | } | |
14a5cf38 JH |
4674 | else { |
4675 | ptr = b->end; | |
14a5cf38 JH |
4676 | } |
4677 | ptr -= cnt; | |
4678 | } | |
4679 | else { | |
6f207bd3 | 4680 | NOOP; |
3b4bd3fd | 4681 | #if 0 |
14a5cf38 | 4682 | /* |
71200d45 | 4683 | * Test code - delete when it works ... |
14a5cf38 | 4684 | */ |
3b4bd3fd | 4685 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4686 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4687 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
486ec47a | 4688 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4689 | chk--; |
22569500 | 4690 | } |
14a5cf38 JH |
4691 | chk -= cnt; |
4692 | ||
a0d1d361 | 4693 | if (ptr != chk ) { |
99ef548b | 4694 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4695 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4696 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4697 | } |
99ef548b | 4698 | #endif |
14a5cf38 JH |
4699 | } |
4700 | if (c->nl) { | |
4701 | if (ptr > c->nl) { | |
4702 | /* | |
71200d45 | 4703 | * They have taken what we lied about |
14a5cf38 JH |
4704 | */ |
4705 | *(c->nl) = 0xd; | |
4706 | c->nl = NULL; | |
4707 | ptr++; | |
4708 | } | |
4709 | } | |
4710 | b->ptr = ptr; | |
4711 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4712 | } |
4713 | ||
4714 | SSize_t | |
f62ce20a | 4715 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4716 | { |
14a5cf38 | 4717 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4718 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4719 | else { |
dcda55fc | 4720 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4721 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4722 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4723 | if (!b->buf) |
4724 | PerlIO_get_base(f); | |
4725 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4726 | return 0; | |
4727 | while (buf < ebuf) { | |
dcda55fc | 4728 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4729 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4730 | while (buf < ebuf && b->ptr < eptr) { | |
4731 | if (*buf == '\n') { | |
4732 | if ((b->ptr + 2) > eptr) { | |
4733 | /* | |
71200d45 | 4734 | * Not room for both |
14a5cf38 JH |
4735 | */ |
4736 | PerlIO_flush(f); | |
4737 | break; | |
4738 | } | |
4739 | else { | |
22569500 NIS |
4740 | *(b->ptr)++ = 0xd; /* CR */ |
4741 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4742 | buf++; |
4743 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4744 | PerlIO_flush(f); | |
4745 | break; | |
4746 | } | |
4747 | } | |
4748 | } | |
4749 | else { | |
dcda55fc | 4750 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4751 | } |
4752 | if (b->ptr >= eptr) { | |
4753 | PerlIO_flush(f); | |
4754 | break; | |
4755 | } | |
4756 | } | |
4757 | } | |
4758 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4759 | PerlIO_flush(f); | |
4760 | return (buf - (STDCHAR *) vbuf); | |
4761 | } | |
99efab12 NIS |
4762 | } |
4763 | ||
4764 | IV | |
f62ce20a | 4765 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4766 | { |
dcda55fc | 4767 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4768 | if (c->nl) { |
4769 | *(c->nl) = 0xd; | |
4770 | c->nl = NULL; | |
4771 | } | |
f62ce20a | 4772 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4773 | } |
4774 | ||
86e05cf2 NIS |
4775 | IV |
4776 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4777 | { | |
4778 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4779 | /* In text mode - flush any pending stuff and flip it */ | |
4780 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4781 | #ifndef PERLIO_USING_CRLF | |
4782 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4783 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4784 | #endif |
4785 | } | |
4786 | return 0; | |
4787 | } | |
4788 | ||
27da23d5 | 4789 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4790 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4791 | "crlf", |
4792 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4793 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4794 | PerlIOCrlf_pushed, |
44798d05 | 4795 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4796 | PerlIOBuf_open, |
86e05cf2 | 4797 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4798 | NULL, |
4799 | PerlIOBase_fileno, | |
71200d45 | 4800 | PerlIOBuf_dup, |
de009b76 | 4801 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4802 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4803 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4804 | PerlIOBuf_seek, |
4805 | PerlIOBuf_tell, | |
4806 | PerlIOBuf_close, | |
4807 | PerlIOCrlf_flush, | |
4808 | PerlIOBuf_fill, | |
4809 | PerlIOBase_eof, | |
4810 | PerlIOBase_error, | |
4811 | PerlIOBase_clearerr, | |
4812 | PerlIOBase_setlinebuf, | |
4813 | PerlIOBuf_get_base, | |
4814 | PerlIOBuf_bufsiz, | |
4815 | PerlIOBuf_get_ptr, | |
4816 | PerlIOCrlf_get_cnt, | |
4817 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4818 | }; |
4819 | ||
9e353e3b | 4820 | PerlIO * |
e87a358a | 4821 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4822 | { |
97aff369 | 4823 | dVAR; |
a1ea730d | 4824 | if (!PL_perlio) { |
14a5cf38 JH |
4825 | PerlIO_stdstreams(aTHX); |
4826 | } | |
303f2dc3 | 4827 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4828 | } |
4829 | ||
9e353e3b | 4830 | PerlIO * |
e87a358a | 4831 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4832 | { |
97aff369 | 4833 | dVAR; |
a1ea730d | 4834 | if (!PL_perlio) { |
14a5cf38 JH |
4835 | PerlIO_stdstreams(aTHX); |
4836 | } | |
303f2dc3 | 4837 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4838 | } |
4839 | ||
9e353e3b | 4840 | PerlIO * |
e87a358a | 4841 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4842 | { |
97aff369 | 4843 | dVAR; |
a1ea730d | 4844 | if (!PL_perlio) { |
14a5cf38 JH |
4845 | PerlIO_stdstreams(aTHX); |
4846 | } | |
303f2dc3 | 4847 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4848 | } |
4849 | ||
4850 | /*--------------------------------------------------------------------------------------*/ | |
4851 | ||
9e353e3b NIS |
4852 | char * |
4853 | PerlIO_getname(PerlIO *f, char *buf) | |
4854 | { | |
a15cef0c | 4855 | #ifdef VMS |
dbf7dff6 | 4856 | dTHX; |
73d840c0 | 4857 | char *name = NULL; |
7659f319 | 4858 | bool exported = FALSE; |
14a5cf38 | 4859 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4860 | if (!stdio) { |
4861 | stdio = PerlIO_exportFILE(f,0); | |
4862 | exported = TRUE; | |
4863 | } | |
4864 | if (stdio) { | |
14a5cf38 | 4865 | name = fgetname(stdio, buf); |
7659f319 CB |
4866 | if (exported) PerlIO_releaseFILE(f,stdio); |
4867 | } | |
73d840c0 | 4868 | return name; |
a15cef0c | 4869 | #else |
8772537c AL |
4870 | PERL_UNUSED_ARG(f); |
4871 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4872 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4873 | return NULL; |
a15cef0c | 4874 | #endif |
9e353e3b NIS |
4875 | } |
4876 | ||
4877 | ||
4878 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4879 | /* |
4880 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4881 | * terms of above |
14a5cf38 | 4882 | */ |
9e353e3b | 4883 | |
e87a358a NIS |
4884 | #undef PerlIO_fdopen |
4885 | PerlIO * | |
4886 | PerlIO_fdopen(int fd, const char *mode) | |
4887 | { | |
4888 | dTHX; | |
bd61b366 | 4889 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4890 | } |
4891 | ||
4892 | #undef PerlIO_open | |
4893 | PerlIO * | |
4894 | PerlIO_open(const char *path, const char *mode) | |
4895 | { | |
4896 | dTHX; | |
42d9b98d | 4897 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4898 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4899 | } |
4900 | ||
4901 | #undef Perlio_reopen | |
4902 | PerlIO * | |
4903 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4904 | { | |
4905 | dTHX; | |
42d9b98d | 4906 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4907 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4908 | } |
4909 | ||
9e353e3b | 4910 | #undef PerlIO_getc |
6f9d8c32 | 4911 | int |
9e353e3b | 4912 | PerlIO_getc(PerlIO *f) |
760ac839 | 4913 | { |
e87a358a | 4914 | dTHX; |
14a5cf38 | 4915 | STDCHAR buf[1]; |
de009b76 | 4916 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4917 | return (unsigned char) buf[0]; |
4918 | } | |
4919 | return EOF; | |
313ca112 NIS |
4920 | } |
4921 | ||
4922 | #undef PerlIO_ungetc | |
4923 | int | |
4924 | PerlIO_ungetc(PerlIO *f, int ch) | |
4925 | { | |
e87a358a | 4926 | dTHX; |
14a5cf38 JH |
4927 | if (ch != EOF) { |
4928 | STDCHAR buf = ch; | |
4929 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4930 | return ch; | |
4931 | } | |
4932 | return EOF; | |
760ac839 LW |
4933 | } |
4934 | ||
9e353e3b NIS |
4935 | #undef PerlIO_putc |
4936 | int | |
4937 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4938 | { |
e87a358a | 4939 | dTHX; |
14a5cf38 JH |
4940 | STDCHAR buf = ch; |
4941 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4942 | } |
4943 | ||
9e353e3b | 4944 | #undef PerlIO_puts |
760ac839 | 4945 | int |
9e353e3b | 4946 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4947 | { |
e87a358a | 4948 | dTHX; |
dcda55fc | 4949 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4950 | } |
4951 | ||
4952 | #undef PerlIO_rewind | |
4953 | void | |
c78749f2 | 4954 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4955 | { |
e87a358a | 4956 | dTHX; |
14a5cf38 JH |
4957 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4958 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4959 | } |
4960 | ||
4961 | #undef PerlIO_vprintf | |
4962 | int | |
4963 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4964 | { | |
14a5cf38 | 4965 | dTHX; |
53ce71d3 | 4966 | SV * sv; |
b83604b4 | 4967 | const char *s; |
14a5cf38 JH |
4968 | STRLEN len; |
4969 | SSize_t wrote; | |
2cc61e15 | 4970 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4971 | va_list apc; |
4972 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4973 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 4974 | #else |
53ce71d3 | 4975 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4976 | #endif |
b83604b4 | 4977 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4978 | wrote = PerlIO_write(f, s, len); |
4979 | SvREFCNT_dec(sv); | |
4980 | return wrote; | |
760ac839 LW |
4981 | } |
4982 | ||
4983 | #undef PerlIO_printf | |
6f9d8c32 | 4984 | int |
14a5cf38 | 4985 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4986 | { |
14a5cf38 JH |
4987 | va_list ap; |
4988 | int result; | |
4989 | va_start(ap, fmt); | |
4990 | result = PerlIO_vprintf(f, fmt, ap); | |
4991 | va_end(ap); | |
4992 | return result; | |
760ac839 LW |
4993 | } |
4994 | ||
4995 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4996 | int |
14a5cf38 | 4997 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4998 | { |
e87a358a | 4999 | dTHX; |
14a5cf38 JH |
5000 | va_list ap; |
5001 | int result; | |
5002 | va_start(ap, fmt); | |
5003 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5004 | va_end(ap); | |
5005 | return result; | |
760ac839 LW |
5006 | } |
5007 | ||
5008 | #undef PerlIO_tmpfile | |
5009 | PerlIO * | |
c78749f2 | 5010 | PerlIO_tmpfile(void) |
760ac839 | 5011 | { |
dbf7dff6 | 5012 | #ifndef WIN32 |
2941a2e1 | 5013 | dTHX; |
dbf7dff6 | 5014 | #endif |
2941a2e1 | 5015 | PerlIO *f = NULL; |
2941a2e1 | 5016 | #ifdef WIN32 |
de009b76 | 5017 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5018 | if (fd >= 0) |
5019 | f = PerlIO_fdopen(fd, "w+b"); | |
5020 | #else /* WIN32 */ | |
460c8493 | 5021 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5022 | int fd = -1; |
5023 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 5024 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 5025 | SV * sv = NULL; |
2941a2e1 JH |
5026 | /* |
5027 | * I have no idea how portable mkstemp() is ... NI-S | |
5028 | */ | |
7299ca58 | 5029 | if (tmpdir && *tmpdir) { |
0b99e986 | 5030 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5031 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5032 | sv_catpv(sv, tempname + 4); |
5033 | fd = mkstemp(SvPVX(sv)); | |
5034 | } | |
5035 | if (fd < 0) { | |
7299ca58 | 5036 | sv = NULL; |
0b99e986 RGS |
5037 | /* else we try /tmp */ |
5038 | fd = mkstemp(tempname); | |
5039 | } | |
2941a2e1 JH |
5040 | if (fd >= 0) { |
5041 | f = PerlIO_fdopen(fd, "w+"); | |
5042 | if (f) | |
5043 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5044 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5045 | } |
ef8d46e8 | 5046 | SvREFCNT_dec(sv); |
2941a2e1 | 5047 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5048 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5049 | |
085e731f CB |
5050 | if (stdio) |
5051 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5052 | ||
2941a2e1 JH |
5053 | # endif /* else HAS_MKSTEMP */ |
5054 | #endif /* else WIN32 */ | |
5055 | return f; | |
760ac839 LW |
5056 | } |
5057 | ||
6f9d8c32 NIS |
5058 | #undef HAS_FSETPOS |
5059 | #undef HAS_FGETPOS | |
5060 | ||
22569500 NIS |
5061 | #endif /* USE_SFIO */ |
5062 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5063 | |
9e353e3b | 5064 | /*======================================================================================*/ |
14a5cf38 | 5065 | /* |
71200d45 NIS |
5066 | * Now some functions in terms of above which may be needed even if we are |
5067 | * not in true PerlIO mode | |
9e353e3b | 5068 | */ |
188f0c84 YO |
5069 | const char * |
5070 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5071 | { | |
5072 | dVAR; | |
8b850bd5 NC |
5073 | const char *direction = NULL; |
5074 | SV *layers; | |
188f0c84 YO |
5075 | /* |
5076 | * Need to supply default layer info from open.pm | |
5077 | */ | |
8b850bd5 NC |
5078 | |
5079 | if (!PL_curcop) | |
5080 | return NULL; | |
5081 | ||
5082 | if (mode && mode[0] != 'r') { | |
5083 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5084 | direction = "open>"; | |
5085 | } else { | |
5086 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5087 | direction = "open<"; | |
188f0c84 | 5088 | } |
8b850bd5 NC |
5089 | if (!direction) |
5090 | return NULL; | |
5091 | ||
20439bc7 | 5092 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5093 | |
5094 | assert(layers); | |
5095 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5096 | } |
5097 | ||
9e353e3b | 5098 | |
760ac839 LW |
5099 | #ifndef HAS_FSETPOS |
5100 | #undef PerlIO_setpos | |
5101 | int | |
766a733e | 5102 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5103 | { |
14a5cf38 JH |
5104 | if (SvOK(pos)) { |
5105 | STRLEN len; | |
2bcd6579 | 5106 | dTHX; |
c4420975 | 5107 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5108 | if (f && len == sizeof(Off_t)) |
5109 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5110 | } | |
93189314 | 5111 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5112 | return -1; |
760ac839 | 5113 | } |
c411622e | 5114 | #else |
c411622e | 5115 | #undef PerlIO_setpos |
5116 | int | |
766a733e | 5117 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5118 | { |
14a5cf38 JH |
5119 | dTHX; |
5120 | if (SvOK(pos)) { | |
5121 | STRLEN len; | |
c4420975 | 5122 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5123 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5124 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5125 | return fsetpos64(f, fpos); |
d9b3e12d | 5126 | #else |
14a5cf38 | 5127 | return fsetpos(f, fpos); |
d9b3e12d | 5128 | #endif |
14a5cf38 | 5129 | } |
766a733e | 5130 | } |
93189314 | 5131 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5132 | return -1; |
c411622e | 5133 | } |
5134 | #endif | |
760ac839 LW |
5135 | |
5136 | #ifndef HAS_FGETPOS | |
5137 | #undef PerlIO_getpos | |
5138 | int | |
766a733e | 5139 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5140 | { |
14a5cf38 JH |
5141 | dTHX; |
5142 | Off_t posn = PerlIO_tell(f); | |
5143 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5144 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5145 | } |
c411622e | 5146 | #else |
c411622e | 5147 | #undef PerlIO_getpos |
5148 | int | |
766a733e | 5149 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5150 | { |
14a5cf38 JH |
5151 | dTHX; |
5152 | Fpos_t fpos; | |
5153 | int code; | |
2d4389e4 | 5154 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5155 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5156 | #else |
14a5cf38 | 5157 | code = fgetpos(f, &fpos); |
d9b3e12d | 5158 | #endif |
14a5cf38 JH |
5159 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5160 | return code; | |
c411622e | 5161 | } |
5162 | #endif | |
760ac839 LW |
5163 | |
5164 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5165 | ||
5166 | int | |
c78749f2 | 5167 | vprintf(char *pat, char *args) |
662a7e3f CS |
5168 | { |
5169 | _doprnt(pat, args, stdout); | |
22569500 | 5170 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5171 | * value */ |
662a7e3f CS |
5172 | } |
5173 | ||
5174 | int | |
c78749f2 | 5175 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5176 | { |
5177 | _doprnt(pat, args, fd); | |
22569500 | 5178 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5179 | * value */ |
760ac839 LW |
5180 | } |
5181 | ||
5182 | #endif | |
5183 | ||
5184 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5185 | int |
8ac85365 | 5186 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5187 | { |
8ff9a42b | 5188 | dTHX; |
d9fad198 | 5189 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5190 | PERL_UNUSED_CONTEXT; |
5191 | ||
1208b3dd JH |
5192 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5193 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5194 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5195 | } |
1208b3dd | 5196 | #endif |
14a5cf38 | 5197 | return val; |
760ac839 LW |
5198 | } |
5199 | #endif | |
5200 | ||
5201 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5202 | int |
14a5cf38 | 5203 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5204 | { |
14a5cf38 JH |
5205 | va_list ap; |
5206 | int result; | |
5207 | va_start(ap, fmt); | |
5208 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5209 | va_end(ap); | |
5210 | return result; | |
760ac839 LW |
5211 | } |
5212 | #endif | |
9cfa90c0 NC |
5213 | |
5214 | /* | |
5215 | * Local variables: | |
5216 | * c-indentation-style: bsd | |
5217 | * c-basic-offset: 4 | |
14d04a33 | 5218 | * indent-tabs-mode: nil |
9cfa90c0 NC |
5219 | * End: |
5220 | * | |
14d04a33 | 5221 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5222 | */ |