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 | ||
6f9d8c32 | 34 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 35 | /* |
6f9d8c32 | 36 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 37 | * which are not #defined in perlio.h. |
6f9d8c32 | 38 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
39 | */ |
40 | ||
41 | #include "EXTERN.h" | |
864dbfa3 | 42 | #define PERL_IN_PERLIO_C |
760ac839 LW |
43 | #include "perl.h" |
44 | ||
32af7c23 CL |
45 | #ifdef PERL_IMPLICIT_CONTEXT |
46 | #undef dSYS | |
47 | #define dSYS dTHX | |
48 | #endif | |
49 | ||
0c4f7ff0 NIS |
50 | #include "XSUB.h" |
51 | ||
9cffb111 OS |
52 | #ifdef __Lynx__ |
53 | /* Missing proto on LynxOS */ | |
54 | int mkstemp(char*); | |
55 | #endif | |
56 | ||
25bbd826 CB |
57 | #ifdef VMS |
58 | #include <rms.h> | |
59 | #endif | |
60 | ||
abf9167d DM |
61 | #define PerlIO_lockcnt(f) (((PerlIOl*)(f))->head->flags) |
62 | ||
1b7a0411 | 63 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 64 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 65 | if (PerlIOValid(f)) { \ |
46c461b5 | 66 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
67 | if (tab && tab->callback) \ |
68 | return (*tab->callback) args; \ | |
69 | else \ | |
70 | return PerlIOBase_ ## base args; \ | |
71 | } \ | |
72 | else \ | |
73 | SETERRNO(EBADF, SS_IVCHAN); \ | |
74 | return failure | |
75 | ||
76 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 77 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 78 | if (PerlIOValid(f)) { \ |
46c461b5 | 79 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
80 | if (tab && tab->callback) \ |
81 | return (*tab->callback) args; \ | |
82 | SETERRNO(EINVAL, LIB_INVARG); \ | |
83 | } \ | |
84 | else \ | |
85 | SETERRNO(EBADF, SS_IVCHAN); \ | |
86 | return failure | |
87 | ||
88 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 89 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 90 | if (PerlIOValid(f)) { \ |
46c461b5 | 91 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
92 | if (tab && tab->callback) \ |
93 | (*tab->callback) args; \ | |
94 | else \ | |
95 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
96 | } \ |
97 | else \ | |
98 | SETERRNO(EBADF, SS_IVCHAN) | |
99 | ||
100 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 101 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 102 | if (PerlIOValid(f)) { \ |
46c461b5 | 103 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
104 | if (tab && tab->callback) \ |
105 | (*tab->callback) args; \ | |
37725cdc NIS |
106 | else \ |
107 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
108 | } \ |
109 | else \ | |
110 | SETERRNO(EBADF, SS_IVCHAN) | |
111 | ||
89a3a251 JH |
112 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
113 | extern int fseeko(FILE *, off_t, int); | |
114 | extern off_t ftello(FILE *); | |
115 | #endif | |
116 | ||
76e6dc3a KW |
117 | #define NATIVE_0xd CR_NATIVE |
118 | #define NATIVE_0xa LF_NATIVE | |
119 | ||
a0c21aa1 JH |
120 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); |
121 | ||
71ab4674 SP |
122 | int |
123 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
124 | { | |
125 | /* | |
126 | * This used to be contents of do_binmode in doio.c | |
127 | */ | |
128 | #ifdef DOSISH | |
71ab4674 | 129 | dTHX; |
58c0efa5 | 130 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
131 | #ifdef NETWARE |
132 | if (PerlLIO_setmode(fp, mode) != -1) { | |
133 | #else | |
134 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
135 | #endif | |
71ab4674 SP |
136 | return 1; |
137 | } | |
138 | else | |
139 | return 0; | |
71ab4674 SP |
140 | #else |
141 | # if defined(USEMYBINMODE) | |
142 | dTHX; | |
58c0efa5 RGS |
143 | # if defined(__CYGWIN__) |
144 | PERL_UNUSED_ARG(iotype); | |
145 | # endif | |
71ab4674 SP |
146 | if (my_binmode(fp, iotype, mode) != FALSE) |
147 | return 1; | |
148 | else | |
149 | return 0; | |
150 | # else | |
151 | PERL_UNUSED_ARG(fp); | |
152 | PERL_UNUSED_ARG(iotype); | |
153 | PERL_UNUSED_ARG(mode); | |
154 | return 1; | |
155 | # endif | |
156 | #endif | |
157 | } | |
71ab4674 | 158 | |
06c7082d | 159 | #ifndef O_ACCMODE |
22569500 | 160 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
161 | #endif |
162 | ||
163 | int | |
164 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
165 | { | |
de009b76 | 166 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
167 | int ix = 0; |
168 | int ptype; | |
169 | switch (result) { | |
170 | case O_RDONLY: | |
171 | ptype = IoTYPE_RDONLY; | |
172 | break; | |
173 | case O_WRONLY: | |
174 | ptype = IoTYPE_WRONLY; | |
175 | break; | |
176 | case O_RDWR: | |
177 | default: | |
178 | ptype = IoTYPE_RDWR; | |
179 | break; | |
180 | } | |
181 | if (writing) | |
182 | *writing = (result != O_RDONLY); | |
183 | ||
184 | if (result == O_RDONLY) { | |
185 | mode[ix++] = 'r'; | |
186 | } | |
187 | #ifdef O_APPEND | |
188 | else if (rawmode & O_APPEND) { | |
189 | mode[ix++] = 'a'; | |
190 | if (result != O_WRONLY) | |
191 | mode[ix++] = '+'; | |
192 | } | |
193 | #endif | |
194 | else { | |
195 | if (result == O_WRONLY) | |
196 | mode[ix++] = 'w'; | |
197 | else { | |
198 | mode[ix++] = 'r'; | |
199 | mode[ix++] = '+'; | |
200 | } | |
201 | } | |
43e5477e JH |
202 | #if O_BINARY != 0 |
203 | /* Unless O_BINARY is different from zero, bit-and:ing | |
204 | * with it won't do much good. */ | |
06c7082d NIS |
205 | if (rawmode & O_BINARY) |
206 | mode[ix++] = 'b'; | |
43e5477e | 207 | # endif |
06c7082d NIS |
208 | mode[ix] = '\0'; |
209 | return ptype; | |
210 | } | |
211 | ||
eb73beca NIS |
212 | #ifndef PERLIO_LAYERS |
213 | int | |
214 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
215 | { | |
6874a2de NIS |
216 | if (!names || !*names |
217 | || strEQ(names, ":crlf") | |
218 | || strEQ(names, ":raw") | |
219 | || strEQ(names, ":bytes") | |
220 | ) { | |
14a5cf38 JH |
221 | return 0; |
222 | } | |
223 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
224 | /* | |
71200d45 | 225 | * NOTREACHED |
14a5cf38 JH |
226 | */ |
227 | return -1; | |
eb73beca NIS |
228 | } |
229 | ||
13621cfb NIS |
230 | void |
231 | PerlIO_destruct(pTHX) | |
232 | { | |
233 | } | |
234 | ||
f5b9d040 NIS |
235 | int |
236 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
237 | { | |
14a5cf38 | 238 | return perlsio_binmode(fp, iotype, mode); |
f5b9d040 | 239 | } |
60382766 | 240 | |
e0fa5af2 | 241 | PerlIO * |
ecdeb87c | 242 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 243 | { |
a0fd4948 | 244 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
245 | return NULL; |
246 | #else | |
247 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 248 | return PerlSIO_fdupopen(f); |
0553478e | 249 | #else |
30753f56 NIS |
250 | #ifdef WIN32 |
251 | return win32_fdupopen(f); | |
252 | #else | |
e0fa5af2 | 253 | if (f) { |
504618e9 | 254 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 255 | if (fd >= 0) { |
06c7082d | 256 | char mode[8]; |
a5936e02 | 257 | #ifdef DJGPP |
dcda55fc AL |
258 | const int omode = djgpp_get_stream_mode(f); |
259 | #else | |
260 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 261 | #endif |
06c7082d | 262 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 263 | /* the r+ is a hack */ |
06c7082d | 264 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
265 | } |
266 | return NULL; | |
267 | } | |
268 | else { | |
93189314 | 269 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 270 | } |
7114a2d2 | 271 | #endif |
e0fa5af2 | 272 | return NULL; |
0553478e | 273 | #endif |
30753f56 | 274 | #endif |
e0fa5af2 NIS |
275 | } |
276 | ||
277 | ||
14a5cf38 | 278 | /* |
71200d45 | 279 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 280 | */ |
ee518936 NIS |
281 | |
282 | PerlIO * | |
14a5cf38 JH |
283 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
284 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
285 | { | |
7cf31beb NIS |
286 | if (narg) { |
287 | if (narg > 1) { | |
3b8752bb | 288 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 289 | } |
14a5cf38 JH |
290 | if (*args == &PL_sv_undef) |
291 | return PerlIO_tmpfile(); | |
292 | else { | |
41188aa0 | 293 | STRLEN len; |
74622586 | 294 | const char *name = SvPV_const(*args, len); |
41188aa0 | 295 | if (!IS_SAFE_PATHNAME(name, len, "open")) |
c8028aa6 TC |
296 | return NULL; |
297 | ||
3b6c1aba | 298 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
299 | fd = PerlLIO_open3(name, imode, perm); |
300 | if (fd >= 0) | |
de009b76 | 301 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
302 | } |
303 | else if (old) { | |
304 | return PerlIO_reopen(name, mode, old); | |
305 | } | |
306 | else { | |
307 | return PerlIO_open(name, mode); | |
308 | } | |
309 | } | |
310 | } | |
311 | else { | |
312 | return PerlIO_fdopen(fd, (char *) mode); | |
313 | } | |
314 | return NULL; | |
ee518936 NIS |
315 | } |
316 | ||
15eb3045 | 317 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
0c4f7ff0 NIS |
318 | XS(XS_PerlIO__Layer__find) |
319 | { | |
14a5cf38 JH |
320 | dXSARGS; |
321 | if (items < 2) | |
322 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
323 | else { | |
dcda55fc | 324 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
325 | ST(0) = (strEQ(name, "crlf") |
326 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
327 | XSRETURN(1); | |
328 | } | |
0c4f7ff0 NIS |
329 | } |
330 | ||
331 | ||
332 | void | |
333 | Perl_boot_core_PerlIO(pTHX) | |
334 | { | |
14a5cf38 | 335 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
336 | } |
337 | ||
ac27b0f5 NIS |
338 | #endif |
339 | ||
32e30700 | 340 | |
6f9d8c32 | 341 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
342 | |
343 | void | |
e8632036 | 344 | PerlIO_init(pTHX) |
760ac839 | 345 | { |
96a5add6 | 346 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
347 | /* |
348 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 349 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 350 | * that may be required by loadable extensions e.g. for |
71200d45 | 351 | * FileHandle::tmpfile |
14a5cf38 | 352 | */ |
760ac839 LW |
353 | } |
354 | ||
33dcbb9a | 355 | #undef PerlIO_tmpfile |
356 | PerlIO * | |
8ac85365 | 357 | PerlIO_tmpfile(void) |
33dcbb9a | 358 | { |
14a5cf38 | 359 | return tmpfile(); |
33dcbb9a | 360 | } |
361 | ||
22569500 | 362 | #else /* PERLIO_IS_STDIO */ |
760ac839 | 363 | |
6f9d8c32 | 364 | /*======================================================================================*/ |
14a5cf38 | 365 | /* |
71200d45 | 366 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 367 | */ |
760ac839 | 368 | |
76ced9ad NIS |
369 | #include "perliol.h" |
370 | ||
6f9d8c32 | 371 | void |
14a5cf38 JH |
372 | PerlIO_debug(const char *fmt, ...) |
373 | { | |
14a5cf38 JH |
374 | va_list ap; |
375 | dSYS; | |
376 | va_start(ap, fmt); | |
582588d2 | 377 | if (!PL_perlio_debug_fd) { |
284167a5 | 378 | if (!TAINTING_get && |
985213f2 AB |
379 | PerlProc_getuid() == PerlProc_geteuid() && |
380 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
381 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
382 | if (s && *s) | |
383 | PL_perlio_debug_fd | |
384 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
385 | else | |
386 | PL_perlio_debug_fd = -1; | |
387 | } else { | |
388 | /* tainting or set*id, so ignore the environment, and ensure we | |
389 | skip these tests next time through. */ | |
27da23d5 | 390 | PL_perlio_debug_fd = -1; |
582588d2 | 391 | } |
14a5cf38 | 392 | } |
27da23d5 | 393 | if (PL_perlio_debug_fd > 0) { |
70ace5da | 394 | #ifdef USE_ITHREADS |
dcda55fc | 395 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
396 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
397 | char buffer[1024]; | |
1208b3dd JH |
398 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
399 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
b469f1e0 | 400 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2)); |
70ace5da | 401 | #else |
dcda55fc AL |
402 | const char *s = CopFILE(PL_curcop); |
403 | STRLEN len; | |
550e2ce0 NC |
404 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
405 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
406 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
407 | ||
b83604b4 | 408 | s = SvPV_const(sv, len); |
b469f1e0 | 409 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len)); |
14a5cf38 | 410 | SvREFCNT_dec(sv); |
70ace5da | 411 | #endif |
14a5cf38 JH |
412 | } |
413 | va_end(ap); | |
6f9d8c32 NIS |
414 | } |
415 | ||
9e353e3b NIS |
416 | /*--------------------------------------------------------------------------------------*/ |
417 | ||
14a5cf38 | 418 | /* |
71200d45 | 419 | * Inner level routines |
14a5cf38 | 420 | */ |
9e353e3b | 421 | |
16865ff7 DM |
422 | /* check that the head field of each layer points back to the head */ |
423 | ||
424 | #ifdef DEBUGGING | |
425 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
426 | static void | |
427 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
428 | { | |
429 | PerlIOl *head, *p; | |
430 | int seen = 0; | |
dd791c72 JH |
431 | #ifndef PERL_IMPLICIT_SYS |
432 | PERL_UNUSED_CONTEXT; | |
433 | #endif | |
16865ff7 DM |
434 | if (!PerlIOValid(f)) |
435 | return; | |
436 | p = head = PerlIOBase(f)->head; | |
437 | assert(p); | |
438 | do { | |
439 | assert(p->head == head); | |
440 | if (p == (PerlIOl*)f) | |
441 | seen = 1; | |
442 | p = p->next; | |
443 | } while (p); | |
444 | assert(seen); | |
445 | } | |
446 | #else | |
447 | # define VERIFY_HEAD(f) | |
448 | #endif | |
449 | ||
450 | ||
14a5cf38 | 451 | /* |
71200d45 | 452 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 453 | */ |
05d1247b | 454 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 455 | |
8995e67d DM |
456 | static void |
457 | PerlIO_init_table(pTHX) | |
458 | { | |
459 | if (PL_perlio) | |
460 | return; | |
461 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
462 | } | |
463 | ||
464 | ||
465 | ||
760ac839 | 466 | PerlIO * |
5f1a76d0 | 467 | PerlIO_allocate(pTHX) |
6f9d8c32 | 468 | { |
14a5cf38 | 469 | /* |
71200d45 | 470 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 471 | */ |
303f2dc3 DM |
472 | PerlIOl **last; |
473 | PerlIOl *f; | |
a1ea730d | 474 | last = &PL_perlio; |
14a5cf38 JH |
475 | while ((f = *last)) { |
476 | int i; | |
303f2dc3 | 477 | last = (PerlIOl **) (f); |
14a5cf38 | 478 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 479 | if (!((++f)->next)) { |
abf9167d | 480 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 481 | f->tab = NULL; |
16865ff7 | 482 | f->head = f; |
303f2dc3 | 483 | return (PerlIO *)f; |
14a5cf38 JH |
484 | } |
485 | } | |
486 | } | |
303f2dc3 | 487 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
488 | if (!f) { |
489 | return NULL; | |
490 | } | |
303f2dc3 | 491 | *last = (PerlIOl*) f++; |
abf9167d | 492 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 493 | f->tab = NULL; |
16865ff7 | 494 | f->head = f; |
303f2dc3 | 495 | return (PerlIO*) f; |
05d1247b NIS |
496 | } |
497 | ||
a1ea730d NIS |
498 | #undef PerlIO_fdupopen |
499 | PerlIO * | |
ecdeb87c | 500 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 501 | { |
04892f78 | 502 | if (PerlIOValid(f)) { |
de009b76 | 503 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 504 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
505 | if (tab && tab->Dup) |
506 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
507 | else { |
508 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
509 | } | |
a1ea730d | 510 | } |
210e727c JH |
511 | else |
512 | SETERRNO(EBADF, SS_IVCHAN); | |
513 | ||
514 | return NULL; | |
a1ea730d NIS |
515 | } |
516 | ||
517 | void | |
303f2dc3 | 518 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 519 | { |
303f2dc3 | 520 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
521 | if (table) { |
522 | int i; | |
303f2dc3 | 523 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 524 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
525 | PerlIOl * const f = table + i; |
526 | if (f->next) { | |
527 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
528 | } |
529 | } | |
3a1ee7e8 | 530 | Safefree(table); |
14a5cf38 | 531 | *tablep = NULL; |
05d1247b | 532 | } |
05d1247b NIS |
533 | } |
534 | ||
fcf2db38 NIS |
535 | |
536 | PerlIO_list_t * | |
3a1ee7e8 | 537 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 538 | { |
14a5cf38 | 539 | PerlIO_list_t *list; |
96a5add6 | 540 | PERL_UNUSED_CONTEXT; |
a02a5408 | 541 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
542 | list->refcnt = 1; |
543 | return list; | |
fcf2db38 NIS |
544 | } |
545 | ||
546 | void | |
3a1ee7e8 | 547 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 548 | { |
14a5cf38 JH |
549 | if (list) { |
550 | if (--list->refcnt == 0) { | |
551 | if (list->array) { | |
14a5cf38 | 552 | IV i; |
ef8d46e8 VP |
553 | for (i = 0; i < list->cur; i++) |
554 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
555 | Safefree(list->array); |
556 | } | |
557 | Safefree(list); | |
558 | } | |
559 | } | |
fcf2db38 NIS |
560 | } |
561 | ||
562 | void | |
3a1ee7e8 | 563 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 564 | { |
334e202e | 565 | PerlIO_pair_t *p; |
b37c2d43 AL |
566 | PERL_UNUSED_CONTEXT; |
567 | ||
14a5cf38 JH |
568 | if (list->cur >= list->len) { |
569 | list->len += 8; | |
570 | if (list->array) | |
571 | Renew(list->array, list->len, PerlIO_pair_t); | |
572 | else | |
a02a5408 | 573 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
574 | } |
575 | p = &(list->array[list->cur++]); | |
576 | p->funcs = funcs; | |
577 | if ((p->arg = arg)) { | |
f84c484e | 578 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 579 | } |
fcf2db38 NIS |
580 | } |
581 | ||
3a1ee7e8 NIS |
582 | PerlIO_list_t * |
583 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
584 | { | |
b37c2d43 | 585 | PerlIO_list_t *list = NULL; |
694c95cf JH |
586 | if (proto) { |
587 | int i; | |
588 | list = PerlIO_list_alloc(aTHX); | |
589 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 590 | SV *arg = proto->array[i].arg; |
24d147a6 | 591 | #ifdef USE_ITHREADS |
a951d81d BL |
592 | if (arg && param) |
593 | arg = sv_dup(arg, param); | |
594 | #else | |
595 | PERL_UNUSED_ARG(param); | |
596 | #endif | |
694c95cf JH |
597 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
598 | } | |
3a1ee7e8 NIS |
599 | } |
600 | return list; | |
601 | } | |
4a4a6116 | 602 | |
05d1247b | 603 | void |
3a1ee7e8 | 604 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 605 | { |
3aaf42a7 | 606 | #ifdef USE_ITHREADS |
303f2dc3 DM |
607 | PerlIOl **table = &proto->Iperlio; |
608 | PerlIOl *f; | |
3a1ee7e8 NIS |
609 | PL_perlio = NULL; |
610 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
611 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 612 | PerlIO_init_table(aTHX); |
a25429c6 | 613 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
614 | while ((f = *table)) { |
615 | int i; | |
303f2dc3 | 616 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 617 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
618 | if (f->next) { |
619 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
620 | } |
621 | f++; | |
622 | } | |
623 | } | |
1b6737cc | 624 | #else |
a25429c6 | 625 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
626 | PERL_UNUSED_ARG(proto); |
627 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 628 | #endif |
9a6404c5 DM |
629 | } |
630 | ||
631 | void | |
13621cfb NIS |
632 | PerlIO_destruct(pTHX) |
633 | { | |
303f2dc3 DM |
634 | PerlIOl **table = &PL_perlio; |
635 | PerlIOl *f; | |
694c95cf | 636 | #ifdef USE_ITHREADS |
a25429c6 | 637 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 638 | #endif |
14a5cf38 JH |
639 | while ((f = *table)) { |
640 | int i; | |
303f2dc3 | 641 | table = (PerlIOl **) (f++); |
14a5cf38 | 642 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 643 | PerlIO *x = &(f->next); |
dcda55fc | 644 | const PerlIOl *l; |
14a5cf38 | 645 | while ((l = *x)) { |
cc6623a8 | 646 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
647 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
648 | PerlIO_flush(x); | |
649 | PerlIO_pop(aTHX_ x); | |
650 | } | |
651 | else { | |
652 | x = PerlIONext(x); | |
653 | } | |
654 | } | |
655 | f++; | |
656 | } | |
657 | } | |
13621cfb NIS |
658 | } |
659 | ||
660 | void | |
a999f61b | 661 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 662 | { |
dcda55fc | 663 | const PerlIOl *l = *f; |
16865ff7 | 664 | VERIFY_HEAD(f); |
14a5cf38 | 665 | if (l) { |
cc6623a8 DM |
666 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
667 | l->tab ? l->tab->name : "(Null)"); | |
668 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
669 | /* |
670 | * If popped returns non-zero do not free its layer structure | |
671 | * it has either done so itself, or it is shared and still in | |
71200d45 | 672 | * use |
14a5cf38 | 673 | */ |
f62ce20a | 674 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
675 | return; |
676 | } | |
abf9167d DM |
677 | if (PerlIO_lockcnt(f)) { |
678 | /* we're in use; defer freeing the structure */ | |
679 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
680 | PerlIOBase(f)->tab = NULL; | |
681 | } | |
682 | else { | |
683 | *f = l->next; | |
684 | Safefree(l); | |
685 | } | |
686 | ||
a8c08ecd | 687 | } |
6f9d8c32 NIS |
688 | } |
689 | ||
39f7a870 JH |
690 | /* Return as an array the stack of layers on a filehandle. Note that |
691 | * the stack is returned top-first in the array, and there are three | |
692 | * times as many array elements as there are layers in the stack: the | |
693 | * first element of a layer triplet is the name, the second one is the | |
694 | * arguments, and the third one is the flags. */ | |
695 | ||
696 | AV * | |
697 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
698 | { | |
dcda55fc | 699 | AV * const av = newAV(); |
39f7a870 | 700 | |
dcda55fc AL |
701 | if (PerlIOValid(f)) { |
702 | PerlIOl *l = PerlIOBase(f); | |
703 | ||
704 | while (l) { | |
92e45a3e NC |
705 | /* There is some collusion in the implementation of |
706 | XS_PerlIO_get_layers - it knows that name and flags are | |
707 | generated as fresh SVs here, and takes advantage of that to | |
708 | "copy" them by taking a reference. If it changes here, it needs | |
709 | to change there too. */ | |
dcda55fc AL |
710 | SV * const name = l->tab && l->tab->name ? |
711 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
712 | SV * const arg = l->tab && l->tab->Getarg ? | |
713 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
714 | av_push(av, name); | |
715 | av_push(av, arg); | |
716 | av_push(av, newSViv((IV)l->flags)); | |
717 | l = l->next; | |
718 | } | |
719 | } | |
39f7a870 | 720 | |
dcda55fc | 721 | return av; |
39f7a870 JH |
722 | } |
723 | ||
9e353e3b | 724 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 725 | /* |
71200d45 | 726 | * XS Interface for perl code |
14a5cf38 | 727 | */ |
9e353e3b | 728 | |
fcf2db38 | 729 | PerlIO_funcs * |
2edd7e44 | 730 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 731 | { |
20b7effb | 732 | |
14a5cf38 JH |
733 | IV i; |
734 | if ((SSize_t) len <= 0) | |
735 | len = strlen(name); | |
3a1ee7e8 | 736 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 737 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
738 | const STRLEN this_len = strlen(f->name); |
739 | if (this_len == len && memEQ(f->name, name, len)) { | |
fe5a182c | 740 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
741 | return f; |
742 | } | |
743 | } | |
3a1ee7e8 NIS |
744 | if (load && PL_subname && PL_def_layerlist |
745 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
746 | if (PL_in_load_module) { |
747 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
748 | return NULL; | |
749 | } else { | |
396482e1 | 750 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 751 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 752 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 753 | ENTER; |
4fa7c2bf | 754 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 755 | if (cv) { |
9cfa90c0 | 756 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 757 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 758 | } |
4fa7c2bf | 759 | PL_in_load_module = TRUE; |
d7a09b41 SR |
760 | /* |
761 | * The two SVs are magically freed by load_module | |
762 | */ | |
a0714e2c | 763 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
764 | LEAVE; |
765 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
766 | } | |
14a5cf38 JH |
767 | } |
768 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
769 | return NULL; | |
f3862f8b NIS |
770 | } |
771 | ||
2a1bc955 | 772 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
773 | |
774 | static int | |
775 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
776 | { | |
14a5cf38 | 777 | if (SvROK(sv)) { |
159b6efe | 778 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
779 | PerlIO * const ifp = IoIFP(io); |
780 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
781 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
782 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
783 | } |
784 | return 0; | |
b13b2135 NIS |
785 | } |
786 | ||
787 | static int | |
788 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
789 | { | |
14a5cf38 | 790 | if (SvROK(sv)) { |
159b6efe | 791 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
792 | PerlIO * const ifp = IoIFP(io); |
793 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
794 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
795 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
796 | } |
797 | return 0; | |
b13b2135 NIS |
798 | } |
799 | ||
800 | static int | |
801 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
802 | { | |
be2597df | 803 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 804 | return 0; |
b13b2135 NIS |
805 | } |
806 | ||
807 | static int | |
808 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
809 | { | |
be2597df | 810 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 811 | return 0; |
b13b2135 NIS |
812 | } |
813 | ||
814 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
815 | perlio_mg_get, |
816 | perlio_mg_set, | |
22569500 | 817 | NULL, /* len */ |
14a5cf38 JH |
818 | perlio_mg_clear, |
819 | perlio_mg_free | |
b13b2135 NIS |
820 | }; |
821 | ||
15eb3045 | 822 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
823 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
824 | { | |
14a5cf38 | 825 | dXSARGS; |
dcda55fc AL |
826 | SV * const sv = SvRV(ST(1)); |
827 | AV * const av = newAV(); | |
14a5cf38 JH |
828 | MAGIC *mg; |
829 | int count = 0; | |
830 | int i; | |
ad64d0ec | 831 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
832 | SvRMAGICAL_off(sv); |
833 | mg = mg_find(sv, PERL_MAGIC_ext); | |
834 | mg->mg_virtual = &perlio_vtab; | |
835 | mg_magical(sv); | |
be2597df | 836 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
837 | for (i = 2; i < items; i++) { |
838 | STRLEN len; | |
dcda55fc AL |
839 | const char * const name = SvPV_const(ST(i), len); |
840 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 841 | if (layer) { |
b37c2d43 | 842 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
843 | } |
844 | else { | |
845 | ST(count) = ST(i); | |
846 | count++; | |
847 | } | |
848 | } | |
849 | SvREFCNT_dec(av); | |
850 | XSRETURN(count); | |
851 | } | |
852 | ||
22569500 | 853 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 854 | |
e3f3bf95 NIS |
855 | SV * |
856 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 857 | { |
da51bb9b | 858 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 859 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 860 | return sv; |
e3f3bf95 NIS |
861 | } |
862 | ||
15eb3045 | 863 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 864 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 865 | { |
486ec47a | 866 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
867 | during loading of layers. |
868 | */ | |
869 | dXSARGS; | |
58c0efa5 | 870 | PERL_UNUSED_ARG(cv); |
c9bca74a | 871 | if (items) |
e62f0680 | 872 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
873 | XSRETURN(0); |
874 | } | |
875 | ||
15eb3045 | 876 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 877 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 878 | { |
14a5cf38 | 879 | dXSARGS; |
58c0efa5 | 880 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
881 | if (items < 2) |
882 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
883 | else { | |
de009b76 | 884 | STRLEN len; |
46c461b5 | 885 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 886 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 887 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
888 | ST(0) = |
889 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
890 | &PL_sv_undef; | |
891 | XSRETURN(1); | |
892 | } | |
0c4f7ff0 NIS |
893 | } |
894 | ||
e3f3bf95 NIS |
895 | void |
896 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
897 | { | |
3a1ee7e8 NIS |
898 | if (!PL_known_layers) |
899 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 900 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 901 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
902 | } |
903 | ||
1141d9f8 | 904 | int |
fcf2db38 | 905 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 906 | { |
14a5cf38 JH |
907 | if (names) { |
908 | const char *s = names; | |
909 | while (*s) { | |
910 | while (isSPACE(*s) || *s == ':') | |
911 | s++; | |
912 | if (*s) { | |
913 | STRLEN llen = 0; | |
914 | const char *e = s; | |
bd61b366 | 915 | const char *as = NULL; |
14a5cf38 JH |
916 | STRLEN alen = 0; |
917 | if (!isIDFIRST(*s)) { | |
918 | /* | |
919 | * Message is consistent with how attribute lists are | |
920 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 921 | * seen as an invalid separator character. |
14a5cf38 | 922 | */ |
de009b76 | 923 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
924 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
925 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
926 | q, *s, q, s); | |
93189314 | 927 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
928 | return -1; |
929 | } | |
930 | do { | |
931 | e++; | |
0eb30aeb | 932 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
933 | llen = e - s; |
934 | if (*e == '(') { | |
935 | int nesting = 1; | |
936 | as = ++e; | |
937 | while (nesting) { | |
938 | switch (*e++) { | |
939 | case ')': | |
940 | if (--nesting == 0) | |
941 | alen = (e - 1) - as; | |
942 | break; | |
943 | case '(': | |
944 | ++nesting; | |
945 | break; | |
946 | case '\\': | |
947 | /* | |
948 | * It's a nul terminated string, not allowed | |
949 | * to \ the terminating null. Anything other | |
71200d45 | 950 | * character is passed over. |
14a5cf38 JH |
951 | */ |
952 | if (*e++) { | |
953 | break; | |
954 | } | |
955 | /* | |
71200d45 | 956 | * Drop through |
14a5cf38 JH |
957 | */ |
958 | case '\0': | |
959 | e--; | |
a2a5de95 NC |
960 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
961 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
962 | (int) (e - s), s); | |
14a5cf38 JH |
963 | return -1; |
964 | default: | |
965 | /* | |
71200d45 | 966 | * boring. |
14a5cf38 JH |
967 | */ |
968 | break; | |
969 | } | |
970 | } | |
971 | } | |
972 | if (e > s) { | |
46c461b5 | 973 | PerlIO_funcs * const layer = |
14a5cf38 JH |
974 | PerlIO_find_layer(aTHX_ s, llen, 1); |
975 | if (layer) { | |
a951d81d BL |
976 | SV *arg = NULL; |
977 | if (as) | |
978 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 979 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 980 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 981 | SvREFCNT_dec(arg); |
14a5cf38 JH |
982 | } |
983 | else { | |
a2a5de95 NC |
984 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
985 | (int) llen, s); | |
14a5cf38 JH |
986 | return -1; |
987 | } | |
988 | } | |
989 | s = e; | |
990 | } | |
991 | } | |
992 | } | |
993 | return 0; | |
1141d9f8 NIS |
994 | } |
995 | ||
dfebf958 | 996 | void |
fcf2db38 | 997 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 998 | { |
27da23d5 | 999 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1000 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1001 | tab = &PerlIO_crlf; |
846be114 | 1002 | #else |
6ce75a77 | 1003 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1004 | tab = &PerlIO_stdio; |
846be114 | 1005 | #endif |
14a5cf38 | 1006 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1007 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1008 | &PL_sv_undef); |
dfebf958 NIS |
1009 | } |
1010 | ||
e3f3bf95 | 1011 | SV * |
14a5cf38 | 1012 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1013 | { |
14a5cf38 | 1014 | return av->array[n].arg; |
e3f3bf95 NIS |
1015 | } |
1016 | ||
f3862f8b | 1017 | PerlIO_funcs * |
14a5cf38 | 1018 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1019 | { |
14a5cf38 JH |
1020 | if (n >= 0 && n < av->cur) { |
1021 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1022 | av->array[n].funcs->name); | |
1023 | return av->array[n].funcs; | |
1024 | } | |
1025 | if (!def) | |
1026 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1027 | return def; | |
e3f3bf95 NIS |
1028 | } |
1029 | ||
4ec2216f NIS |
1030 | IV |
1031 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1032 | { | |
8772537c AL |
1033 | PERL_UNUSED_ARG(mode); |
1034 | PERL_UNUSED_ARG(arg); | |
1035 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1036 | if (PerlIOValid(f)) { |
1037 | PerlIO_flush(f); | |
1038 | PerlIO_pop(aTHX_ f); | |
1039 | return 0; | |
1040 | } | |
1041 | return -1; | |
1042 | } | |
1043 | ||
27da23d5 | 1044 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1045 | sizeof(PerlIO_funcs), |
1046 | "pop", | |
1047 | 0, | |
1048 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1049 | PerlIOPop_pushed, | |
1050 | NULL, | |
c0888ace | 1051 | PerlIOBase_open, |
4ec2216f NIS |
1052 | NULL, |
1053 | NULL, | |
1054 | NULL, | |
1055 | NULL, | |
1056 | NULL, | |
1057 | NULL, | |
1058 | NULL, | |
1059 | NULL, | |
de009b76 AL |
1060 | NULL, |
1061 | NULL, | |
4ec2216f NIS |
1062 | NULL, /* flush */ |
1063 | NULL, /* fill */ | |
1064 | NULL, | |
1065 | NULL, | |
1066 | NULL, | |
1067 | NULL, | |
1068 | NULL, /* get_base */ | |
1069 | NULL, /* get_bufsiz */ | |
1070 | NULL, /* get_ptr */ | |
1071 | NULL, /* get_cnt */ | |
1072 | NULL, /* set_ptrcnt */ | |
1073 | }; | |
1074 | ||
fcf2db38 | 1075 | PerlIO_list_t * |
e3f3bf95 NIS |
1076 | PerlIO_default_layers(pTHX) |
1077 | { | |
3a1ee7e8 | 1078 | if (!PL_def_layerlist) { |
284167a5 | 1079 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1080 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1081 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1082 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1083 | #if defined(WIN32) |
27da23d5 | 1084 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1085 | #if 0 |
14a5cf38 | 1086 | osLayer = &PerlIO_win32; |
0c4128ad | 1087 | #endif |
2f8118af | 1088 | #endif |
27da23d5 JH |
1089 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1090 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1091 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1092 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1093 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1094 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1095 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1096 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1097 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1098 | &PL_sv_undef); | |
1099 | if (s) { | |
3a1ee7e8 | 1100 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1101 | } |
1102 | else { | |
3a1ee7e8 | 1103 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1104 | } |
1141d9f8 | 1105 | } |
3a1ee7e8 NIS |
1106 | if (PL_def_layerlist->cur < 2) { |
1107 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1108 | } |
3a1ee7e8 | 1109 | return PL_def_layerlist; |
e3f3bf95 NIS |
1110 | } |
1111 | ||
0c4f7ff0 NIS |
1112 | void |
1113 | Perl_boot_core_PerlIO(pTHX) | |
1114 | { | |
1115 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1116 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1117 | __FILE__); | |
0c4f7ff0 | 1118 | #endif |
14a5cf38 | 1119 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1120 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1121 | } |
e3f3bf95 NIS |
1122 | |
1123 | PerlIO_funcs * | |
1124 | PerlIO_default_layer(pTHX_ I32 n) | |
1125 | { | |
46c461b5 | 1126 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1127 | if (n < 0) |
1128 | n += av->cur; | |
27da23d5 | 1129 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1130 | } |
1131 | ||
a999f61b NIS |
1132 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1133 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1134 | |
1135 | void | |
1141d9f8 | 1136 | PerlIO_stdstreams(pTHX) |
60382766 | 1137 | { |
a1ea730d | 1138 | if (!PL_perlio) { |
8995e67d | 1139 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1140 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1141 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1142 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1143 | } | |
60382766 NIS |
1144 | } |
1145 | ||
1146 | PerlIO * | |
27da23d5 | 1147 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1148 | { |
16865ff7 | 1149 | VERIFY_HEAD(f); |
2dc2558e | 1150 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1151 | Perl_croak( aTHX_ |
5cf96513 RB |
1152 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1153 | "PerlIO layer function table size", (UV)tab->fsize, | |
1154 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1155 | } |
1156 | if (tab->size) { | |
b464bac0 | 1157 | PerlIOl *l; |
2dc2558e | 1158 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1159 | Perl_croak( aTHX_ |
5cf96513 RB |
1160 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1161 | "PerlIO layer instance size", (UV)tab->size, | |
1162 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1163 | } |
1164 | /* Real layer with a data area */ | |
002e75cf JH |
1165 | if (f) { |
1166 | char *temp; | |
1167 | Newxz(temp, tab->size, char); | |
1168 | l = (PerlIOl*)temp; | |
1169 | if (l) { | |
1170 | l->next = *f; | |
1171 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1172 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1173 | *f = l; |
1174 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1175 | (void*)f, tab->name, | |
1176 | (mode) ? mode : "(Null)", (void*)arg); | |
1177 | if (*l->tab->Pushed && | |
1178 | (*l->tab->Pushed) | |
1179 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1180 | PerlIO_pop(aTHX_ f); | |
1181 | return NULL; | |
1182 | } | |
2dc2558e | 1183 | } |
002e75cf JH |
1184 | else |
1185 | return NULL; | |
2dc2558e NIS |
1186 | } |
1187 | } | |
1188 | else if (f) { | |
1189 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1190 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1191 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1192 | if (tab->Pushed && |
27da23d5 | 1193 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1194 | return NULL; |
14a5cf38 JH |
1195 | } |
1196 | } | |
1197 | return f; | |
60382766 NIS |
1198 | } |
1199 | ||
81fe74fb LT |
1200 | PerlIO * |
1201 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1202 | IV n, const char *mode, int fd, int imode, int perm, | |
1203 | PerlIO *old, int narg, SV **args) | |
1204 | { | |
1205 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1206 | if (tab && tab->Open) { | |
1207 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1208 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1209 | PerlIO_close(ret); |
1210 | return NULL; | |
1211 | } | |
1212 | return ret; | |
1213 | } | |
1214 | SETERRNO(EINVAL, LIB_INVARG); | |
1215 | return NULL; | |
1216 | } | |
1217 | ||
dfebf958 | 1218 | IV |
86e05cf2 NIS |
1219 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1220 | { | |
1221 | if (PerlIOValid(f)) { | |
1222 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1223 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1224 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1225 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1226 | } | |
1227 | else { | |
1228 | /* Not suitable - pop it */ | |
1229 | PerlIO_pop(aTHX_ f); | |
1230 | } | |
1231 | return 0; | |
1232 | } | |
1233 | return -1; | |
1234 | } | |
1235 | ||
1236 | IV | |
2dc2558e | 1237 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1238 | { |
8772537c AL |
1239 | PERL_UNUSED_ARG(mode); |
1240 | PERL_UNUSED_ARG(arg); | |
1241 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1242 | |
04892f78 | 1243 | if (PerlIOValid(f)) { |
86e05cf2 | 1244 | PerlIO *t; |
de009b76 | 1245 | const PerlIOl *l; |
14a5cf38 | 1246 | PerlIO_flush(f); |
86e05cf2 NIS |
1247 | /* |
1248 | * Strip all layers that are not suitable for a raw stream | |
1249 | */ | |
1250 | t = f; | |
1251 | while (t && (l = *t)) { | |
cc6623a8 | 1252 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1253 | /* Has a handler - normal case */ |
9d97e8b8 | 1254 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1255 | if (*t == l) { |
1256 | /* Layer still there - move down a layer */ | |
1257 | t = PerlIONext(t); | |
1258 | } | |
1259 | } | |
1260 | else { | |
1261 | return -1; | |
1262 | } | |
14a5cf38 JH |
1263 | } |
1264 | else { | |
86e05cf2 NIS |
1265 | /* No handler - pop it */ |
1266 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1267 | } |
1268 | } | |
86e05cf2 | 1269 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1270 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1271 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1272 | return 0; |
1273 | } | |
14a5cf38 JH |
1274 | } |
1275 | return -1; | |
dfebf958 NIS |
1276 | } |
1277 | ||
ac27b0f5 | 1278 | int |
14a5cf38 | 1279 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1280 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1281 | { |
14a5cf38 JH |
1282 | int code = 0; |
1283 | while (n < max) { | |
8772537c | 1284 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1285 | if (tab) { |
1286 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1287 | code = -1; | |
1288 | break; | |
1289 | } | |
1290 | } | |
1291 | n++; | |
1292 | } | |
1293 | return code; | |
e3f3bf95 NIS |
1294 | } |
1295 | ||
1296 | int | |
ac27b0f5 NIS |
1297 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1298 | { | |
14a5cf38 | 1299 | int code = 0; |
da0fccaa DG |
1300 | ENTER; |
1301 | save_scalar(PL_errgv); | |
53f1b6d2 | 1302 | if (f && names) { |
8772537c | 1303 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1304 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1305 | if (code == 0) { | |
d9dac8cd | 1306 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1307 | } |
3a1ee7e8 | 1308 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1309 | } |
da0fccaa | 1310 | LEAVE; |
14a5cf38 | 1311 | return code; |
ac27b0f5 NIS |
1312 | } |
1313 | ||
f3862f8b | 1314 | |
60382766 | 1315 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1316 | /* |
71200d45 | 1317 | * Given the abstraction above the public API functions |
14a5cf38 | 1318 | */ |
60382766 NIS |
1319 | |
1320 | int | |
f5b9d040 | 1321 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1322 | { |
68b5363f | 1323 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1324 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1325 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1326 | iotype, mode, (names) ? names : "(Null)"); |
1327 | ||
03c0554d NIS |
1328 | if (names) { |
1329 | /* Do not flush etc. if (e.g.) switching encodings. | |
1330 | if a pushed layer knows it needs to flush lower layers | |
1331 | (for example :unix which is never going to call them) | |
1332 | it can do the flush when it is pushed. | |
1333 | */ | |
1334 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1335 | } | |
1336 | else { | |
86e05cf2 | 1337 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1338 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1339 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1340 | O_BINARY so we can look for it in mode. | |
1341 | */ | |
1342 | if (!(mode & O_BINARY)) { | |
1343 | /* Text mode */ | |
86e05cf2 NIS |
1344 | /* FIXME?: Looking down the layer stack seems wrong, |
1345 | but is a way of reaching past (say) an encoding layer | |
1346 | to flip CRLF-ness of the layer(s) below | |
1347 | */ | |
03c0554d NIS |
1348 | while (*f) { |
1349 | /* Perhaps we should turn on bottom-most aware layer | |
1350 | e.g. Ilya's idea that UNIX TTY could serve | |
1351 | */ | |
cc6623a8 DM |
1352 | if (PerlIOBase(f)->tab && |
1353 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1354 | { | |
03c0554d NIS |
1355 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1356 | /* Not in text mode - flush any pending stuff and flip it */ | |
1357 | PerlIO_flush(f); | |
1358 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1359 | } | |
1360 | /* Only need to turn it on in one layer so we are done */ | |
1361 | return TRUE; | |
ed53a2bb | 1362 | } |
03c0554d | 1363 | f = PerlIONext(f); |
14a5cf38 | 1364 | } |
03c0554d NIS |
1365 | /* Not finding a CRLF aware layer presumably means we are binary |
1366 | which is not what was requested - so we failed | |
1367 | We _could_ push :crlf layer but so could caller | |
1368 | */ | |
1369 | return FALSE; | |
14a5cf38 | 1370 | } |
6ce75a77 | 1371 | #endif |
86e05cf2 NIS |
1372 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1373 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1374 | */ |
a0714e2c | 1375 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1376 | } |
f5b9d040 NIS |
1377 | } |
1378 | ||
f5b9d040 | 1379 | int |
e87a358a | 1380 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1381 | { |
37725cdc | 1382 | if (PerlIOValid(f)) { |
46c461b5 | 1383 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1384 | if (tab && tab->Close) |
1385 | return (*tab->Close)(aTHX_ f); | |
1386 | else | |
1387 | return PerlIOBase_close(aTHX_ f); | |
1388 | } | |
14a5cf38 | 1389 | else { |
93189314 | 1390 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1391 | return -1; |
1392 | } | |
76ced9ad NIS |
1393 | } |
1394 | ||
b931b1d9 | 1395 | int |
e87a358a | 1396 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1397 | { |
de009b76 | 1398 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1399 | while (PerlIOValid(f)) { |
1400 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1401 | if (PerlIO_lockcnt(f)) |
1402 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1403 | f = PerlIONext(f); | |
f6c77cf1 | 1404 | } |
14a5cf38 | 1405 | return code; |
b931b1d9 NIS |
1406 | } |
1407 | ||
b931b1d9 | 1408 | int |
e87a358a | 1409 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1410 | { |
20b7effb | 1411 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1412 | } |
1413 | ||
1141d9f8 | 1414 | |
fcf2db38 | 1415 | static PerlIO_funcs * |
2edd7e44 NIS |
1416 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1417 | { | |
14a5cf38 | 1418 | /* |
71200d45 | 1419 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1420 | */ |
526fd1b4 | 1421 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1422 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1423 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1424 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1425 | if (!f) |
dcbac5bb | 1426 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1427 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1428 | return f; |
1429 | } | |
14a5cf38 JH |
1430 | |
1431 | /* | |
71200d45 | 1432 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1433 | */ |
1434 | switch (SvTYPE(sv)) { | |
1435 | case SVt_PVAV: | |
6a245ed1 | 1436 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1437 | case SVt_PVHV: |
6a245ed1 | 1438 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1439 | case SVt_PVCV: |
6a245ed1 | 1440 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1441 | case SVt_PVGV: |
6a245ed1 | 1442 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1443 | default: |
1444 | return NULL; | |
14a5cf38 | 1445 | } |
2edd7e44 NIS |
1446 | } |
1447 | ||
fcf2db38 | 1448 | PerlIO_list_t * |
14a5cf38 JH |
1449 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1450 | const char *mode, int narg, SV **args) | |
1451 | { | |
1452 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); | |
1453 | int incdef = 1; | |
a1ea730d | 1454 | if (!PL_perlio) |
14a5cf38 JH |
1455 | PerlIO_stdstreams(aTHX); |
1456 | if (narg) { | |
dcda55fc | 1457 | SV * const arg = *args; |
14a5cf38 | 1458 | /* |
71200d45 NIS |
1459 | * If it is a reference but not an object see if we have a handler |
1460 | * for it | |
14a5cf38 JH |
1461 | */ |
1462 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1463 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1464 | if (handler) { |
3a1ee7e8 NIS |
1465 | def = PerlIO_list_alloc(aTHX); |
1466 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1467 | incdef = 0; |
1468 | } | |
1469 | /* | |
e934609f | 1470 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1471 | * something sensible else we will just stringfy and open |
71200d45 | 1472 | * resulting string. |
14a5cf38 JH |
1473 | */ |
1474 | } | |
1475 | } | |
9fe371da | 1476 | if (!layers || !*layers) |
11bcd5da | 1477 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1478 | if (layers && *layers) { |
1479 | PerlIO_list_t *av; | |
1480 | if (incdef) { | |
a951d81d | 1481 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1482 | } |
1483 | else { | |
1484 | av = def; | |
1485 | } | |
0cff2cf3 NIS |
1486 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1487 | return av; | |
1488 | } | |
1489 | else { | |
1490 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1491 | return NULL; |
0cff2cf3 | 1492 | } |
14a5cf38 JH |
1493 | } |
1494 | else { | |
1495 | if (incdef) | |
1496 | def->refcnt++; | |
1497 | return def; | |
1498 | } | |
ee518936 NIS |
1499 | } |
1500 | ||
1501 | PerlIO * | |
14a5cf38 JH |
1502 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1503 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1504 | { | |
1505 | if (!f && narg == 1 && *args == &PL_sv_undef) { | |
1506 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1507 | if (!layers || !*layers) |
11bcd5da | 1508 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1509 | if (layers && *layers) |
1510 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1511 | } | |
1512 | } | |
1513 | else { | |
de009b76 | 1514 | PerlIO_list_t *layera; |
14a5cf38 JH |
1515 | IV n; |
1516 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1517 | if (PerlIOValid(f)) { |
14a5cf38 | 1518 | /* |
71200d45 NIS |
1519 | * This is "reopen" - it is not tested as perl does not use it |
1520 | * yet | |
14a5cf38 JH |
1521 | */ |
1522 | PerlIOl *l = *f; | |
3a1ee7e8 | 1523 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1524 | while (l) { |
a951d81d | 1525 | SV *arg = NULL; |
cc6623a8 | 1526 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1527 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1528 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1529 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1530 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1531 | l = *PerlIONext(&l); |
1532 | } | |
1533 | } | |
1534 | else { | |
1535 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1536 | if (!layera) { |
1537 | return NULL; | |
1538 | } | |
14a5cf38 JH |
1539 | } |
1540 | /* | |
71200d45 | 1541 | * Start at "top" of layer stack |
14a5cf38 JH |
1542 | */ |
1543 | n = layera->cur - 1; | |
1544 | while (n >= 0) { | |
46c461b5 | 1545 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1546 | if (t && t->Open) { |
1547 | tab = t; | |
1548 | break; | |
1549 | } | |
1550 | n--; | |
1551 | } | |
1552 | if (tab) { | |
1553 | /* | |
71200d45 | 1554 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1555 | */ |
7cf31beb | 1556 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1557 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1558 | } |
14a5cf38 | 1559 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1560 | tab->name, layers ? layers : "(Null)", mode, fd, |
1561 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1562 | if (tab->Open) |
1563 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1564 | f, narg, args); | |
1565 | else { | |
1566 | SETERRNO(EINVAL, LIB_INVARG); | |
1567 | f = NULL; | |
1568 | } | |
14a5cf38 JH |
1569 | if (f) { |
1570 | if (n + 1 < layera->cur) { | |
1571 | /* | |
1572 | * More layers above the one that we used to open - | |
71200d45 | 1573 | * apply them now |
14a5cf38 | 1574 | */ |
d9dac8cd NIS |
1575 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1576 | /* If pushing layers fails close the file */ | |
1577 | PerlIO_close(f); | |
14a5cf38 JH |
1578 | f = NULL; |
1579 | } | |
1580 | } | |
1581 | } | |
1582 | } | |
3a1ee7e8 | 1583 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1584 | } |
1585 | return f; | |
ee518936 | 1586 | } |
b931b1d9 NIS |
1587 | |
1588 | ||
9e353e3b | 1589 | SSize_t |
e87a358a | 1590 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1591 | { |
7918f24d NC |
1592 | PERL_ARGS_ASSERT_PERLIO_READ; |
1593 | ||
b32dd47e | 1594 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1595 | } |
1596 | ||
313ca112 | 1597 | SSize_t |
e87a358a | 1598 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1599 | { |
7918f24d NC |
1600 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1601 | ||
b32dd47e | 1602 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1603 | } |
1604 | ||
9e353e3b | 1605 | SSize_t |
e87a358a | 1606 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1607 | { |
7918f24d NC |
1608 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1609 | ||
b32dd47e | 1610 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1611 | } |
1612 | ||
6f9d8c32 | 1613 | int |
e87a358a | 1614 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1615 | { |
b32dd47e | 1616 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1617 | } |
1618 | ||
9e353e3b | 1619 | Off_t |
e87a358a | 1620 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1621 | { |
b32dd47e | 1622 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1623 | } |
1624 | ||
6f9d8c32 | 1625 | int |
e87a358a | 1626 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1627 | { |
14a5cf38 JH |
1628 | if (f) { |
1629 | if (*f) { | |
de009b76 | 1630 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1631 | |
1632 | if (tab && tab->Flush) | |
f62ce20a | 1633 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1634 | else |
1635 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1636 | } |
1637 | else { | |
fe5a182c | 1638 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1639 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1640 | return -1; |
1641 | } | |
1642 | } | |
1643 | else { | |
1644 | /* | |
1645 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1646 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1647 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1648 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1649 | * decisions? --jhi |
14a5cf38 | 1650 | */ |
303f2dc3 DM |
1651 | PerlIOl **table = &PL_perlio; |
1652 | PerlIOl *ff; | |
14a5cf38 | 1653 | int code = 0; |
303f2dc3 | 1654 | while ((ff = *table)) { |
14a5cf38 | 1655 | int i; |
303f2dc3 | 1656 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1657 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1658 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1659 | code = -1; |
303f2dc3 | 1660 | ff++; |
14a5cf38 JH |
1661 | } |
1662 | } | |
1663 | return code; | |
1664 | } | |
760ac839 LW |
1665 | } |
1666 | ||
a9c883f6 | 1667 | void |
f62ce20a | 1668 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1669 | { |
303f2dc3 DM |
1670 | PerlIOl **table = &PL_perlio; |
1671 | PerlIOl *f; | |
14a5cf38 JH |
1672 | while ((f = *table)) { |
1673 | int i; | |
303f2dc3 | 1674 | table = (PerlIOl **) (f++); |
14a5cf38 | 1675 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1676 | if (f->next |
1677 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1678 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1679 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1680 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1681 | f++; |
1682 | } | |
a9c883f6 | 1683 | } |
a9c883f6 NIS |
1684 | } |
1685 | ||
06da4f11 | 1686 | int |
e87a358a | 1687 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1688 | { |
b32dd47e | 1689 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1690 | } |
1691 | ||
f3862f8b NIS |
1692 | int |
1693 | PerlIO_isutf8(PerlIO *f) | |
1694 | { | |
1b7a0411 JH |
1695 | if (PerlIOValid(f)) |
1696 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1697 | else | |
1698 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1699 | |
1b7a0411 | 1700 | return -1; |
f3862f8b NIS |
1701 | } |
1702 | ||
6f9d8c32 | 1703 | int |
e87a358a | 1704 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1705 | { |
b32dd47e | 1706 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1707 | } |
1708 | ||
9e353e3b | 1709 | int |
e87a358a | 1710 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1711 | { |
b32dd47e | 1712 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1713 | } |
1714 | ||
9e353e3b | 1715 | void |
e87a358a | 1716 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1717 | { |
b32dd47e | 1718 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1719 | } |
1720 | ||
9e353e3b | 1721 | void |
e87a358a | 1722 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1723 | { |
b32dd47e | 1724 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1725 | } |
1726 | ||
9e353e3b NIS |
1727 | int |
1728 | PerlIO_has_base(PerlIO *f) | |
1729 | { | |
1b7a0411 | 1730 | if (PerlIOValid(f)) { |
46c461b5 | 1731 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1732 | |
1733 | if (tab) | |
1734 | return (tab->Get_base != NULL); | |
1b7a0411 | 1735 | } |
1b7a0411 JH |
1736 | |
1737 | return 0; | |
760ac839 LW |
1738 | } |
1739 | ||
9e353e3b NIS |
1740 | int |
1741 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1742 | { |
d7dfc388 SK |
1743 | if (PerlIOValid(f)) { |
1744 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1745 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1746 | |
d7dfc388 SK |
1747 | if (tab) |
1748 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1749 | } |
14a5cf38 | 1750 | } |
1b7a0411 | 1751 | |
14a5cf38 | 1752 | return 0; |
9e353e3b NIS |
1753 | } |
1754 | ||
9e353e3b NIS |
1755 | int |
1756 | PerlIO_has_cntptr(PerlIO *f) | |
1757 | { | |
04892f78 | 1758 | if (PerlIOValid(f)) { |
46c461b5 | 1759 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1760 | |
1761 | if (tab) | |
1762 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1763 | } |
1b7a0411 | 1764 | |
14a5cf38 | 1765 | return 0; |
9e353e3b NIS |
1766 | } |
1767 | ||
9e353e3b NIS |
1768 | int |
1769 | PerlIO_canset_cnt(PerlIO *f) | |
1770 | { | |
04892f78 | 1771 | if (PerlIOValid(f)) { |
46c461b5 | 1772 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1773 | |
1774 | if (tab) | |
1775 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1776 | } |
1b7a0411 | 1777 | |
14a5cf38 | 1778 | return 0; |
760ac839 LW |
1779 | } |
1780 | ||
888911fc | 1781 | STDCHAR * |
e87a358a | 1782 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1783 | { |
b32dd47e | 1784 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1785 | } |
1786 | ||
b66f3475 | 1787 | SSize_t |
e87a358a | 1788 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1789 | { |
b66f3475 | 1790 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1791 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1792 | } |
1793 | ||
9e353e3b | 1794 | STDCHAR * |
e87a358a | 1795 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1796 | { |
b32dd47e | 1797 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1798 | } |
1799 | ||
b66f3475 | 1800 | SSize_t |
e87a358a | 1801 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1802 | { |
b32dd47e | 1803 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1804 | } |
1805 | ||
9e353e3b | 1806 | void |
b66f3475 | 1807 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1808 | { |
b32dd47e | 1809 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1810 | } |
1811 | ||
9e353e3b | 1812 | void |
b66f3475 | 1813 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1814 | { |
b32dd47e | 1815 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1816 | } |
1817 | ||
4ec2216f | 1818 | |
9e353e3b | 1819 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1820 | /* |
71200d45 | 1821 | * utf8 and raw dummy layers |
14a5cf38 | 1822 | */ |
dfebf958 | 1823 | |
26fb694e | 1824 | IV |
2dc2558e | 1825 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1826 | { |
96a5add6 | 1827 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1828 | PERL_UNUSED_ARG(mode); |
1829 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1830 | if (PerlIOValid(f)) { |
cc6623a8 | 1831 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1832 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1833 | else | |
1834 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1835 | return 0; | |
1836 | } | |
1837 | return -1; | |
26fb694e NIS |
1838 | } |
1839 | ||
27da23d5 | 1840 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1841 | sizeof(PerlIO_funcs), |
14a5cf38 | 1842 | "utf8", |
2dc2558e | 1843 | 0, |
a778d1f5 | 1844 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1845 | PerlIOUtf8_pushed, |
1846 | NULL, | |
c0888ace | 1847 | PerlIOBase_open, |
14a5cf38 JH |
1848 | NULL, |
1849 | NULL, | |
1850 | NULL, | |
1851 | NULL, | |
1852 | NULL, | |
1853 | NULL, | |
1854 | NULL, | |
1855 | NULL, | |
de009b76 AL |
1856 | NULL, |
1857 | NULL, | |
22569500 NIS |
1858 | NULL, /* flush */ |
1859 | NULL, /* fill */ | |
14a5cf38 JH |
1860 | NULL, |
1861 | NULL, | |
1862 | NULL, | |
1863 | NULL, | |
22569500 NIS |
1864 | NULL, /* get_base */ |
1865 | NULL, /* get_bufsiz */ | |
1866 | NULL, /* get_ptr */ | |
1867 | NULL, /* get_cnt */ | |
1868 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1869 | }; |
1870 | ||
27da23d5 | 1871 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1872 | sizeof(PerlIO_funcs), |
14a5cf38 | 1873 | "bytes", |
2dc2558e | 1874 | 0, |
a778d1f5 | 1875 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1876 | PerlIOUtf8_pushed, |
1877 | NULL, | |
c0888ace | 1878 | PerlIOBase_open, |
14a5cf38 JH |
1879 | NULL, |
1880 | NULL, | |
1881 | NULL, | |
1882 | NULL, | |
1883 | NULL, | |
1884 | NULL, | |
1885 | NULL, | |
1886 | NULL, | |
de009b76 AL |
1887 | NULL, |
1888 | NULL, | |
22569500 NIS |
1889 | NULL, /* flush */ |
1890 | NULL, /* fill */ | |
14a5cf38 JH |
1891 | NULL, |
1892 | NULL, | |
1893 | NULL, | |
1894 | NULL, | |
22569500 NIS |
1895 | NULL, /* get_base */ |
1896 | NULL, /* get_bufsiz */ | |
1897 | NULL, /* get_ptr */ | |
1898 | NULL, /* get_cnt */ | |
1899 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1900 | }; |
1901 | ||
27da23d5 | 1902 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1903 | sizeof(PerlIO_funcs), |
14a5cf38 | 1904 | "raw", |
2dc2558e | 1905 | 0, |
14a5cf38 JH |
1906 | PERLIO_K_DUMMY, |
1907 | PerlIORaw_pushed, | |
1908 | PerlIOBase_popped, | |
ecfd0649 | 1909 | PerlIOBase_open, |
14a5cf38 JH |
1910 | NULL, |
1911 | NULL, | |
1912 | NULL, | |
1913 | NULL, | |
1914 | NULL, | |
1915 | NULL, | |
1916 | NULL, | |
1917 | NULL, | |
de009b76 AL |
1918 | NULL, |
1919 | NULL, | |
22569500 NIS |
1920 | NULL, /* flush */ |
1921 | NULL, /* fill */ | |
14a5cf38 JH |
1922 | NULL, |
1923 | NULL, | |
1924 | NULL, | |
1925 | NULL, | |
22569500 NIS |
1926 | NULL, /* get_base */ |
1927 | NULL, /* get_bufsiz */ | |
1928 | NULL, /* get_ptr */ | |
1929 | NULL, /* get_cnt */ | |
1930 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1931 | }; |
1932 | /*--------------------------------------------------------------------------------------*/ | |
1933 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1934 | /* |
71200d45 | 1935 | * "Methods" of the "base class" |
14a5cf38 | 1936 | */ |
9e353e3b NIS |
1937 | |
1938 | IV | |
f62ce20a | 1939 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1940 | { |
04892f78 | 1941 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1942 | } |
1943 | ||
f5b9d040 | 1944 | char * |
81428673 | 1945 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1946 | { |
1947 | char *s = buf; | |
81428673 | 1948 | if (PerlIOValid(f)) { |
de009b76 | 1949 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1950 | if (flags & PERLIO_F_APPEND) { |
1951 | *s++ = 'a'; | |
1952 | if (flags & PERLIO_F_CANREAD) { | |
1953 | *s++ = '+'; | |
1954 | } | |
14a5cf38 | 1955 | } |
81428673 NIS |
1956 | else if (flags & PERLIO_F_CANREAD) { |
1957 | *s++ = 'r'; | |
1958 | if (flags & PERLIO_F_CANWRITE) | |
1959 | *s++ = '+'; | |
1960 | } | |
1961 | else if (flags & PERLIO_F_CANWRITE) { | |
1962 | *s++ = 'w'; | |
1963 | if (flags & PERLIO_F_CANREAD) { | |
1964 | *s++ = '+'; | |
1965 | } | |
14a5cf38 | 1966 | } |
35990314 | 1967 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1968 | if (!(flags & PERLIO_F_CRLF)) |
1969 | *s++ = 'b'; | |
5f1a76d0 | 1970 | #endif |
81428673 | 1971 | } |
14a5cf38 JH |
1972 | *s = '\0'; |
1973 | return buf; | |
f5b9d040 NIS |
1974 | } |
1975 | ||
81428673 | 1976 | |
76ced9ad | 1977 | IV |
2dc2558e | 1978 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1979 | { |
de009b76 | 1980 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1981 | PERL_UNUSED_CONTEXT; |
8772537c | 1982 | PERL_UNUSED_ARG(arg); |
de009b76 | 1983 | |
14a5cf38 JH |
1984 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1985 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 1986 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
1987 | l->flags |= PERLIO_F_FASTGETS; |
1988 | if (mode) { | |
3b6c1aba | 1989 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
1990 | mode++; |
1991 | switch (*mode++) { | |
1992 | case 'r': | |
1993 | l->flags |= PERLIO_F_CANREAD; | |
1994 | break; | |
1995 | case 'a': | |
1996 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
1997 | break; | |
1998 | case 'w': | |
1999 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2000 | break; | |
2001 | default: | |
93189314 | 2002 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2003 | return -1; |
2004 | } | |
2005 | while (*mode) { | |
2006 | switch (*mode++) { | |
2007 | case '+': | |
2008 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2009 | break; | |
2010 | case 'b': | |
2011 | l->flags &= ~PERLIO_F_CRLF; | |
2012 | break; | |
2013 | case 't': | |
2014 | l->flags |= PERLIO_F_CRLF; | |
2015 | break; | |
2016 | default: | |
93189314 | 2017 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2018 | return -1; |
2019 | } | |
2020 | } | |
2021 | } | |
2022 | else { | |
2023 | if (l->next) { | |
2024 | l->flags |= l->next->flags & | |
2025 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2026 | PERLIO_F_APPEND); | |
2027 | } | |
2028 | } | |
5e2ab84b | 2029 | #if 0 |
14a5cf38 | 2030 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2031 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2032 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2033 | #endif |
14a5cf38 | 2034 | return 0; |
76ced9ad NIS |
2035 | } |
2036 | ||
2037 | IV | |
f62ce20a | 2038 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2039 | { |
96a5add6 | 2040 | PERL_UNUSED_CONTEXT; |
8772537c | 2041 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2042 | return 0; |
760ac839 LW |
2043 | } |
2044 | ||
9e353e3b | 2045 | SSize_t |
f62ce20a | 2046 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2047 | { |
14a5cf38 | 2048 | /* |
71200d45 | 2049 | * Save the position as current head considers it |
14a5cf38 | 2050 | */ |
de009b76 | 2051 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2052 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2053 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2054 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2055 | } |
2056 | ||
f6c77cf1 | 2057 | SSize_t |
f62ce20a | 2058 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2059 | { |
14a5cf38 JH |
2060 | STDCHAR *buf = (STDCHAR *) vbuf; |
2061 | if (f) { | |
263df5f1 JH |
2062 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2063 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2064 | SETERRNO(EBADF, SS_IVCHAN); | |
2065 | return 0; | |
2066 | } | |
14a5cf38 | 2067 | while (count > 0) { |
93c2c2ec IZ |
2068 | get_cnt: |
2069 | { | |
14a5cf38 JH |
2070 | SSize_t avail = PerlIO_get_cnt(f); |
2071 | SSize_t take = 0; | |
2072 | if (avail > 0) | |
94e529cc | 2073 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2074 | if (take > 0) { |
2075 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2076 | Copy(ptr, buf, take, STDCHAR); | |
2077 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2078 | count -= take; | |
2079 | buf += take; | |
93c2c2ec IZ |
2080 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2081 | goto get_cnt; | |
14a5cf38 JH |
2082 | } |
2083 | if (count > 0 && avail <= 0) { | |
2084 | if (PerlIO_fill(f) != 0) | |
2085 | break; | |
2086 | } | |
93c2c2ec | 2087 | } |
14a5cf38 JH |
2088 | } |
2089 | return (buf - (STDCHAR *) vbuf); | |
2090 | } | |
f6c77cf1 | 2091 | return 0; |
f6c77cf1 NIS |
2092 | } |
2093 | ||
9e353e3b | 2094 | IV |
f62ce20a | 2095 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2096 | { |
96a5add6 | 2097 | PERL_UNUSED_CONTEXT; |
8772537c | 2098 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2099 | return 0; |
9e353e3b NIS |
2100 | } |
2101 | ||
2102 | IV | |
f62ce20a | 2103 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2104 | { |
96a5add6 | 2105 | PERL_UNUSED_CONTEXT; |
8772537c | 2106 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2107 | return -1; |
06da4f11 NIS |
2108 | } |
2109 | ||
2110 | IV | |
f62ce20a | 2111 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2112 | { |
37725cdc NIS |
2113 | IV code = -1; |
2114 | if (PerlIOValid(f)) { | |
2115 | PerlIO *n = PerlIONext(f); | |
2116 | code = PerlIO_flush(f); | |
2117 | PerlIOBase(f)->flags &= | |
2118 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2119 | while (PerlIOValid(n)) { | |
de009b76 | 2120 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2121 | if (tab && tab->Close) { |
2122 | if ((*tab->Close)(aTHX_ n) != 0) | |
2123 | code = -1; | |
2124 | break; | |
2125 | } | |
2126 | else { | |
2127 | PerlIOBase(n)->flags &= | |
2128 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2129 | } | |
2130 | n = PerlIONext(n); | |
2131 | } | |
2132 | } | |
2133 | else { | |
2134 | SETERRNO(EBADF, SS_IVCHAN); | |
2135 | } | |
14a5cf38 | 2136 | return code; |
9e353e3b NIS |
2137 | } |
2138 | ||
2139 | IV | |
f62ce20a | 2140 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2141 | { |
96a5add6 | 2142 | PERL_UNUSED_CONTEXT; |
04892f78 | 2143 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2144 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2145 | } | |
2146 | return 1; | |
9e353e3b NIS |
2147 | } |
2148 | ||
2149 | IV | |
f62ce20a | 2150 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2151 | { |
96a5add6 | 2152 | PERL_UNUSED_CONTEXT; |
04892f78 | 2153 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2154 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2155 | } | |
2156 | return 1; | |
9e353e3b NIS |
2157 | } |
2158 | ||
2159 | void | |
f62ce20a | 2160 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2161 | { |
04892f78 | 2162 | if (PerlIOValid(f)) { |
dcda55fc | 2163 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2164 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2165 | if (PerlIOValid(n)) |
14a5cf38 JH |
2166 | PerlIO_clearerr(n); |
2167 | } | |
9e353e3b NIS |
2168 | } |
2169 | ||
2170 | void | |
f62ce20a | 2171 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2172 | { |
96a5add6 | 2173 | PERL_UNUSED_CONTEXT; |
04892f78 | 2174 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2175 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2176 | } | |
9e353e3b NIS |
2177 | } |
2178 | ||
93a8090d NIS |
2179 | SV * |
2180 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2181 | { | |
2182 | if (!arg) | |
a0714e2c | 2183 | return NULL; |
24d147a6 | 2184 | #ifdef USE_ITHREADS |
93a8090d | 2185 | if (param) { |
a951d81d BL |
2186 | arg = sv_dup(arg, param); |
2187 | SvREFCNT_inc_simple_void_NN(arg); | |
2188 | return arg; | |
93a8090d NIS |
2189 | } |
2190 | else { | |
2191 | return newSVsv(arg); | |
2192 | } | |
2193 | #else | |
1b6737cc | 2194 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2195 | return newSVsv(arg); |
2196 | #endif | |
2197 | } | |
2198 | ||
2199 | PerlIO * | |
ecdeb87c | 2200 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2201 | { |
1b6737cc | 2202 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2203 | if (PerlIOValid(nexto)) { |
de009b76 | 2204 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2205 | if (tab && tab->Dup) |
2206 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2207 | else | |
2208 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2209 | } |
2210 | if (f) { | |
dcda55fc | 2211 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2212 | SV *arg = NULL; |
93a8090d | 2213 | char buf[8]; |
316ebaf2 | 2214 | assert(self); |
fe5a182c | 2215 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2216 | self ? self->name : "(Null)", |
2217 | (void*)f, (void*)o, (void*)param); | |
2218 | if (self && self->Getarg) | |
210e727c | 2219 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2220 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2221 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2222 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2223 | SvREFCNT_dec(arg); |
93a8090d NIS |
2224 | } |
2225 | return f; | |
2226 | } | |
2227 | ||
27da23d5 | 2228 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2229 | |
8b84d7dd | 2230 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2231 | static void |
2232 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2233 | dVAR; |
22c96fc1 | 2234 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2235 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2236 | int *new_array; |
2237 | ||
dd791c72 JH |
2238 | #ifndef PERL_IMPLICIT_SYS |
2239 | PERL_UNUSED_CONTEXT; | |
2240 | #endif | |
2241 | ||
22c96fc1 NC |
2242 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", |
2243 | old_max, new_fd, new_max); | |
2244 | ||
2245 | if (new_fd < old_max) { | |
2246 | return; | |
2247 | } | |
2248 | ||
f4ae5be6 NC |
2249 | assert (new_max > new_fd); |
2250 | ||
eae082a0 JH |
2251 | /* Use plain realloc() since we need this memory to be really |
2252 | * global and visible to all the interpreters and/or threads. */ | |
2253 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2254 | |
2255 | if (!new_array) { | |
8b84d7dd | 2256 | #ifdef USE_ITHREADS |
6cb8cb21 | 2257 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2258 | #endif |
4cbe3a7d | 2259 | croak_no_mem(); |
22c96fc1 NC |
2260 | } |
2261 | ||
2262 | PL_perlio_fd_refcnt_size = new_max; | |
2263 | PL_perlio_fd_refcnt = new_array; | |
2264 | ||
95b63a38 JH |
2265 | PerlIO_debug("Zeroing %p, %d\n", |
2266 | (void*)(new_array + old_max), | |
2267 | new_max - old_max); | |
22c96fc1 NC |
2268 | |
2269 | Zero(new_array + old_max, new_max - old_max, int); | |
2270 | } | |
2271 | ||
2272 | ||
93a8090d NIS |
2273 | void |
2274 | PerlIO_init(pTHX) | |
2275 | { | |
8b84d7dd | 2276 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2277 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2278 | } |
2279 | ||
168d5872 NIS |
2280 | void |
2281 | PerlIOUnix_refcnt_inc(int fd) | |
2282 | { | |
27da23d5 | 2283 | dTHX; |
22c96fc1 | 2284 | if (fd >= 0) { |
97aff369 | 2285 | dVAR; |
22c96fc1 | 2286 | |
8b84d7dd | 2287 | #ifdef USE_ITHREADS |
6cb8cb21 | 2288 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2289 | #endif |
22c96fc1 NC |
2290 | if (fd >= PL_perlio_fd_refcnt_size) |
2291 | S_more_refcounted_fds(aTHX_ fd); | |
2292 | ||
27da23d5 | 2293 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2294 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2295 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2296 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2297 | fd, PL_perlio_fd_refcnt[fd]); | |
2298 | } | |
2299 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2300 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2301 | |
8b84d7dd | 2302 | #ifdef USE_ITHREADS |
6cb8cb21 | 2303 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2304 | #endif |
8b84d7dd | 2305 | } else { |
12605ff9 | 2306 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2307 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2308 | } |
2309 | } | |
2310 | ||
168d5872 NIS |
2311 | int |
2312 | PerlIOUnix_refcnt_dec(int fd) | |
2313 | { | |
2314 | int cnt = 0; | |
22c96fc1 | 2315 | if (fd >= 0) { |
97aff369 | 2316 | dVAR; |
8b84d7dd | 2317 | #ifdef USE_ITHREADS |
6cb8cb21 | 2318 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2319 | #endif |
8b84d7dd | 2320 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2321 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2322 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2323 | fd, PL_perlio_fd_refcnt_size); |
2324 | } | |
2325 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2326 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2327 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2328 | fd, PL_perlio_fd_refcnt[fd]); |
2329 | } | |
27da23d5 | 2330 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2331 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2332 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2333 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2334 | #endif |
8b84d7dd | 2335 | } else { |
12605ff9 | 2336 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2337 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2338 | } |
2339 | return cnt; | |
2340 | } | |
2341 | ||
2e0cfa16 FC |
2342 | int |
2343 | PerlIOUnix_refcnt(int fd) | |
2344 | { | |
2345 | dTHX; | |
2346 | int cnt = 0; | |
2347 | if (fd >= 0) { | |
2348 | dVAR; | |
2349 | #ifdef USE_ITHREADS | |
2350 | MUTEX_LOCK(&PL_perlio_mutex); | |
2351 | #endif | |
2352 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2353 | /* diag_listed_as: refcnt: fd %d%s */ | |
2354 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2355 | fd, PL_perlio_fd_refcnt_size); | |
2356 | } | |
2357 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2358 | /* diag_listed_as: refcnt: fd %d%s */ | |
2359 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2360 | fd, PL_perlio_fd_refcnt[fd]); | |
2361 | } | |
2362 | cnt = PL_perlio_fd_refcnt[fd]; | |
2363 | #ifdef USE_ITHREADS | |
2364 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2365 | #endif | |
2366 | } else { | |
2367 | /* diag_listed_as: refcnt: fd %d%s */ | |
2368 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2369 | } | |
2370 | return cnt; | |
2371 | } | |
2372 | ||
694c95cf JH |
2373 | void |
2374 | PerlIO_cleanup(pTHX) | |
2375 | { | |
2376 | int i; | |
2377 | #ifdef USE_ITHREADS | |
a25429c6 | 2378 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2379 | #else |
2380 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2381 | #endif |
e47547a8 | 2382 | |
694c95cf JH |
2383 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2384 | for (i=0; i < 3; i++) | |
2385 | PerlIOUnix_refcnt_inc(i); | |
2386 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2387 | /* Restore STDIN..STDERR refcount */ | |
2388 | for (i=0; i < 3; i++) | |
2389 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2390 | |
2391 | if (PL_known_layers) { | |
2392 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2393 | PL_known_layers = NULL; | |
2394 | } | |
27da23d5 | 2395 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2396 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2397 | PL_def_layerlist = NULL; | |
2398 | } | |
6cb8cb21 RGS |
2399 | } |
2400 | ||
0934c9d9 | 2401 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2402 | { |
53d44271 | 2403 | dVAR; |
4f3da17a DM |
2404 | #if 0 |
2405 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2406 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2407 | being present (at least in win32) :-(. | |
2408 | Disable for now. | |
2409 | */ | |
6cb8cb21 RGS |
2410 | #ifdef DEBUGGING |
2411 | { | |
2412 | /* By now all filehandles should have been closed, so any | |
2413 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2414 | * errors. */ | |
77db880c JH |
2415 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2416 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2417 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2418 | int i; |
2419 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2420 | if (PL_perlio_fd_refcnt[i]) { |
2421 | const STRLEN len = | |
2422 | my_snprintf(buf, sizeof(buf), | |
2423 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2424 | i, PL_perlio_fd_refcnt[i]); | |
2425 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2426 | } | |
6cb8cb21 RGS |
2427 | } |
2428 | } | |
2429 | #endif | |
4f3da17a | 2430 | #endif |
eae082a0 JH |
2431 | /* Not bothering with PL_perlio_mutex since by now |
2432 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2433 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2434 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2435 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2436 | PL_perlio_fd_refcnt = NULL; |
2437 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2438 | } |
694c95cf JH |
2439 | } |
2440 | ||
9e353e3b | 2441 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2442 | /* |
71200d45 | 2443 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2444 | */ |
9e353e3b | 2445 | |
14a5cf38 | 2446 | typedef struct { |
22569500 NIS |
2447 | struct _PerlIO base; /* The generic part */ |
2448 | int fd; /* UNIX like file descriptor */ | |
2449 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2450 | } PerlIOUnix; |
2451 | ||
abf9167d DM |
2452 | static void |
2453 | S_lockcnt_dec(pTHX_ const void* f) | |
2454 | { | |
dd791c72 JH |
2455 | #ifndef PERL_IMPLICIT_SYS |
2456 | PERL_UNUSED_CONTEXT; | |
2457 | #endif | |
abf9167d DM |
2458 | PerlIO_lockcnt((PerlIO*)f)--; |
2459 | } | |
2460 | ||
2461 | ||
2462 | /* call the signal handler, and if that handler happens to clear | |
2463 | * this handle, free what we can and return true */ | |
2464 | ||
2465 | static bool | |
2466 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2467 | ENTER; | |
2468 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2469 | PerlIO_lockcnt(f)++; | |
2470 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2471 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2472 | LEAVE; | |
abf9167d | 2473 | return 0; |
be48bbe8 | 2474 | } |
abf9167d DM |
2475 | /* we've just run some perl-level code that could have done |
2476 | * anything, including closing the file or clearing this layer. | |
2477 | * If so, free any lower layers that have already been | |
2478 | * cleared, then return an error. */ | |
2479 | while (PerlIOValid(f) && | |
2480 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2481 | { | |
2482 | const PerlIOl *l = *f; | |
2483 | *f = l->next; | |
2484 | Safefree(l); | |
2485 | } | |
be48bbe8 | 2486 | LEAVE; |
abf9167d DM |
2487 | return 1; |
2488 | } | |
2489 | ||
6f9d8c32 | 2490 | int |
9e353e3b | 2491 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2492 | { |
14a5cf38 | 2493 | int oflags = -1; |
3b6c1aba | 2494 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2495 | mode++; |
2496 | switch (*mode) { | |
2497 | case 'r': | |
2498 | oflags = O_RDONLY; | |
2499 | if (*++mode == '+') { | |
2500 | oflags = O_RDWR; | |
2501 | mode++; | |
2502 | } | |
2503 | break; | |
2504 | ||
2505 | case 'w': | |
2506 | oflags = O_CREAT | O_TRUNC; | |
2507 | if (*++mode == '+') { | |
2508 | oflags |= O_RDWR; | |
2509 | mode++; | |
2510 | } | |
2511 | else | |
2512 | oflags |= O_WRONLY; | |
2513 | break; | |
2514 | ||
2515 | case 'a': | |
2516 | oflags = O_CREAT | O_APPEND; | |
2517 | if (*++mode == '+') { | |
2518 | oflags |= O_RDWR; | |
2519 | mode++; | |
2520 | } | |
2521 | else | |
2522 | oflags |= O_WRONLY; | |
2523 | break; | |
2524 | } | |
43e5477e JH |
2525 | |
2526 | /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */ | |
2527 | ||
2528 | /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one | |
2529 | * of them in, and then bit-and-masking the other them away, won't | |
2530 | * have much of an effect. */ | |
2531 | switch (*mode) { | |
2532 | case 'b': | |
2533 | #if O_TEXT != O_BINARY | |
2534 | oflags |= O_BINARY; | |
14a5cf38 | 2535 | oflags &= ~O_TEXT; |
43e5477e JH |
2536 | #endif |
2537 | mode++; | |
2538 | break; | |
2539 | case 't': | |
2540 | #if O_TEXT != O_BINARY | |
14a5cf38 JH |
2541 | oflags |= O_TEXT; |
2542 | oflags &= ~O_BINARY; | |
43e5477e JH |
2543 | #endif |
2544 | mode++; | |
2545 | break; | |
2546 | default: | |
2547 | # if O_BINARY != 0 | |
2548 | /* bit-or:ing with zero O_BINARY would be useless. */ | |
93f31ee9 PG |
2549 | /* |
2550 | * If neither "t" nor "b" was specified, open the file | |
2551 | * in O_BINARY mode. | |
43e5477e JH |
2552 | * |
2553 | * Note that if something else than the zero byte was seen | |
2554 | * here (e.g. bogus mode "rx"), just few lines later we will | |
2555 | * set the errno and invalidate the flags. | |
93f31ee9 PG |
2556 | */ |
2557 | oflags |= O_BINARY; | |
43e5477e JH |
2558 | # endif |
2559 | break; | |
93f31ee9 | 2560 | } |
14a5cf38 | 2561 | if (*mode || oflags == -1) { |
93189314 | 2562 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2563 | oflags = -1; |
2564 | } | |
2565 | return oflags; | |
9e353e3b NIS |
2566 | } |
2567 | ||
2568 | IV | |
f62ce20a | 2569 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2570 | { |
96a5add6 | 2571 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2572 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2573 | } |
2574 | ||
aa063c35 NIS |
2575 | static void |
2576 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2577 | { |
de009b76 | 2578 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2579 | #if defined(WIN32) |
aa063c35 NIS |
2580 | Stat_t st; |
2581 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2582 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2583 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2584 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2585 | } | |
aa063c35 NIS |
2586 | else { |
2587 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2588 | } | |
6caa5a9c NIS |
2589 | } |
2590 | #endif | |
aa063c35 NIS |
2591 | s->fd = fd; |
2592 | s->oflags = imode; | |
2593 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2594 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2595 | } |
2596 | ||
2597 | IV | |
2598 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2599 | { | |
2600 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2601 | if (*PerlIONext(f)) { |
4b069b44 | 2602 | /* We never call down so do any pending stuff now */ |
03c0554d | 2603 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2604 | /* |
71200d45 | 2605 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2606 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2607 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2608 | */ |
acbd16bf | 2609 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2610 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2611 | } |
2612 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2613 | |
14a5cf38 | 2614 | return code; |
4b803d04 NIS |
2615 | } |
2616 | ||
c2fcde81 JH |
2617 | IV |
2618 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2619 | { | |
de009b76 | 2620 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2621 | Off_t new_loc; |
96a5add6 | 2622 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2623 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2624 | #ifdef ESPIPE | |
2625 | SETERRNO(ESPIPE, LIB_INVARG); | |
2626 | #else | |
2627 | SETERRNO(EINVAL, LIB_INVARG); | |
2628 | #endif | |
2629 | return -1; | |
2630 | } | |
0723351e NC |
2631 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2632 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2633 | return -1; |
c2fcde81 JH |
2634 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2635 | return 0; | |
2636 | } | |
2637 | ||
9e353e3b | 2638 | PerlIO * |
14a5cf38 JH |
2639 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2640 | IV n, const char *mode, int fd, int imode, | |
2641 | int perm, PerlIO *f, int narg, SV **args) | |
2642 | { | |
d9dac8cd | 2643 | if (PerlIOValid(f)) { |
cc6623a8 | 2644 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2645 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2646 | } |
2647 | if (narg > 0) { | |
3b6c1aba | 2648 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2649 | mode++; |
2650 | else { | |
2651 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2652 | #ifdef VMS |
2653 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2654 | #else | |
14a5cf38 | 2655 | perm = 0666; |
5e2ce0f3 | 2656 | #endif |
14a5cf38 JH |
2657 | } |
2658 | if (imode != -1) { | |
41188aa0 TC |
2659 | STRLEN len; |
2660 | const char *path = SvPV_const(*args, len); | |
2661 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2662 | return NULL; |
14a5cf38 JH |
2663 | fd = PerlLIO_open3(path, imode, perm); |
2664 | } | |
2665 | } | |
2666 | if (fd >= 0) { | |
3b6c1aba | 2667 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2668 | mode++; |
2669 | if (!f) { | |
2670 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2671 | } |
2672 | if (!PerlIOValid(f)) { | |
a33cf58c | 2673 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2674 | PerlLIO_close(fd); |
a33cf58c NIS |
2675 | return NULL; |
2676 | } | |
d9dac8cd | 2677 | } |
aa063c35 | 2678 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2679 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2680 | if (*mode == IoTYPE_APPEND) |
2681 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2682 | return f; |
2683 | } | |
2684 | else { | |
2685 | if (f) { | |
6f207bd3 | 2686 | NOOP; |
14a5cf38 | 2687 | /* |
71200d45 | 2688 | * FIXME: pop layers ??? |
14a5cf38 JH |
2689 | */ |
2690 | } | |
2691 | return NULL; | |
2692 | } | |
9e353e3b NIS |
2693 | } |
2694 | ||
71200d45 | 2695 | PerlIO * |
ecdeb87c | 2696 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2697 | { |
dcda55fc | 2698 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2699 | int fd = os->fd; |
ecdeb87c NIS |
2700 | if (flags & PERLIO_DUP_FD) { |
2701 | fd = PerlLIO_dup(fd); | |
2702 | } | |
22c96fc1 | 2703 | if (fd >= 0) { |
ecdeb87c | 2704 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2705 | if (f) { |
2706 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2707 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2708 | return f; |
2709 | } | |
0a20f69b | 2710 | PerlLIO_close(fd); |
71200d45 NIS |
2711 | } |
2712 | return NULL; | |
2713 | } | |
2714 | ||
2715 | ||
9e353e3b | 2716 | SSize_t |
f62ce20a | 2717 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2718 | { |
abf9167d DM |
2719 | int fd; |
2720 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2721 | return -1; | |
2722 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2723 | #ifdef PERLIO_STD_SPECIAL |
2724 | if (fd == 0) | |
2725 | return PERLIO_STD_IN(fd, vbuf, count); | |
2726 | #endif | |
81428673 | 2727 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2728 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2729 | return 0; |
1fd8f4ce | 2730 | } |
14a5cf38 | 2731 | while (1) { |
b464bac0 | 2732 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2733 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2734 | if (len < 0) { |
2735 | if (errno != EAGAIN) { | |
2736 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2737 | } | |
2738 | } | |
2739 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2740 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2741 | SETERRNO(0,0); |
2742 | } | |
14a5cf38 JH |
2743 | return len; |
2744 | } | |
abf9167d DM |
2745 | /* EINTR */ |
2746 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2747 | return -1; | |
14a5cf38 | 2748 | } |
b464bac0 | 2749 | /*NOTREACHED*/ |
9e353e3b NIS |
2750 | } |
2751 | ||
2752 | SSize_t | |
f62ce20a | 2753 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2754 | { |
abf9167d DM |
2755 | int fd; |
2756 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2757 | return -1; | |
2758 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2759 | #ifdef PERLIO_STD_SPECIAL |
2760 | if (fd == 1 || fd == 2) | |
2761 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2762 | #endif | |
14a5cf38 | 2763 | while (1) { |
de009b76 | 2764 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2765 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2766 | if (len < 0) { |
2767 | if (errno != EAGAIN) { | |
2768 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2769 | } | |
2770 | } | |
14a5cf38 JH |
2771 | return len; |
2772 | } | |
abf9167d DM |
2773 | /* EINTR */ |
2774 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2775 | return -1; | |
06da4f11 | 2776 | } |
1b6737cc | 2777 | /*NOTREACHED*/ |
9e353e3b NIS |
2778 | } |
2779 | ||
9e353e3b | 2780 | Off_t |
f62ce20a | 2781 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2782 | { |
96a5add6 AL |
2783 | PERL_UNUSED_CONTEXT; |
2784 | ||
14a5cf38 | 2785 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2786 | } |
2787 | ||
2556f95e GF |
2788 | |
2789 | IV | |
2376d97d | 2790 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2791 | { |
de009b76 | 2792 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2793 | int code = 0; |
168d5872 NIS |
2794 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2795 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2796 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2797 | return 0; | |
22569500 | 2798 | } |
93a8090d NIS |
2799 | } |
2800 | else { | |
93189314 | 2801 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2802 | return -1; |
2803 | } | |
14a5cf38 JH |
2804 | while (PerlLIO_close(fd) != 0) { |
2805 | if (errno != EINTR) { | |
2806 | code = -1; | |
2807 | break; | |
2808 | } | |
abf9167d DM |
2809 | /* EINTR */ |
2810 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2811 | return -1; | |
14a5cf38 JH |
2812 | } |
2813 | if (code == 0) { | |
2814 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2815 | } | |
2816 | return code; | |
9e353e3b NIS |
2817 | } |
2818 | ||
27da23d5 | 2819 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2820 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2821 | "unix", |
2822 | sizeof(PerlIOUnix), | |
2823 | PERLIO_K_RAW, | |
2824 | PerlIOUnix_pushed, | |
2376d97d | 2825 | PerlIOBase_popped, |
14a5cf38 | 2826 | PerlIOUnix_open, |
86e05cf2 | 2827 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2828 | NULL, |
2829 | PerlIOUnix_fileno, | |
71200d45 | 2830 | PerlIOUnix_dup, |
14a5cf38 JH |
2831 | PerlIOUnix_read, |
2832 | PerlIOBase_unread, | |
2833 | PerlIOUnix_write, | |
2834 | PerlIOUnix_seek, | |
2835 | PerlIOUnix_tell, | |
2836 | PerlIOUnix_close, | |
22569500 NIS |
2837 | PerlIOBase_noop_ok, /* flush */ |
2838 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2839 | PerlIOBase_eof, |
2840 | PerlIOBase_error, | |
2841 | PerlIOBase_clearerr, | |
2842 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2843 | NULL, /* get_base */ |
2844 | NULL, /* get_bufsiz */ | |
2845 | NULL, /* get_ptr */ | |
2846 | NULL, /* get_cnt */ | |
2847 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2848 | }; |
2849 | ||
2850 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2851 | /* |
71200d45 | 2852 | * stdio as a layer |
14a5cf38 | 2853 | */ |
9e353e3b | 2854 | |
313e59c8 NIS |
2855 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2856 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2857 | broken by the last second glibc 2.3 fix | |
2858 | */ | |
2859 | #define STDIO_BUFFER_WRITABLE | |
2860 | #endif | |
2861 | ||
2862 | ||
14a5cf38 JH |
2863 | typedef struct { |
2864 | struct _PerlIO base; | |
22569500 | 2865 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2866 | } PerlIOStdio; |
2867 | ||
2868 | IV | |
f62ce20a | 2869 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2870 | { |
96a5add6 AL |
2871 | PERL_UNUSED_CONTEXT; |
2872 | ||
c4420975 AL |
2873 | if (PerlIOValid(f)) { |
2874 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2875 | if (s) | |
2876 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2877 | } |
2878 | errno = EBADF; | |
2879 | return -1; | |
9e353e3b NIS |
2880 | } |
2881 | ||
766a733e | 2882 | char * |
14a5cf38 JH |
2883 | PerlIOStdio_mode(const char *mode, char *tmode) |
2884 | { | |
de009b76 | 2885 | char * const ret = tmode; |
a0625d38 SR |
2886 | if (mode) { |
2887 | while (*mode) { | |
2888 | *tmode++ = *mode++; | |
2889 | } | |
14a5cf38 | 2890 | } |
95005ad8 | 2891 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2892 | *tmode++ = 'b'; |
2893 | #endif | |
14a5cf38 JH |
2894 | *tmode = '\0'; |
2895 | return ret; | |
2896 | } | |
2897 | ||
4b803d04 | 2898 | IV |
2dc2558e | 2899 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2900 | { |
1fd8f4ce NIS |
2901 | PerlIO *n; |
2902 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2903 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2904 | if (toptab == tab) { |
2905 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2906 | PerlIO_pop(aTHX_ f); | |
2907 | return 0; | |
2908 | } else { | |
de009b76 | 2909 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2910 | char tmode[8]; |
2911 | FILE *stdio; | |
81428673 | 2912 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2913 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2914 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2915 | /* We never call down so do any pending stuff now */ | |
2916 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2917 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2918 | } |
1fd8f4ce NIS |
2919 | else { |
2920 | return -1; | |
2921 | } | |
2922 | } | |
14a5cf38 | 2923 | } |
2dc2558e | 2924 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2925 | } |
2926 | ||
22569500 | 2927 | |
9e353e3b | 2928 | PerlIO * |
4b069b44 | 2929 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2930 | { |
14a5cf38 JH |
2931 | dTHX; |
2932 | PerlIO *f = NULL; | |
2933 | if (stdio) { | |
22569500 | 2934 | PerlIOStdio *s; |
375ed12a JH |
2935 | int fd0 = fileno(stdio); |
2936 | if (fd0 < 0) { | |
2937 | return NULL; | |
2938 | } | |
4b069b44 NIS |
2939 | if (!mode || !*mode) { |
2940 | /* We need to probe to see how we can open the stream | |
2941 | so start with read/write and then try write and read | |
2942 | we dup() so that we can fclose without loosing the fd. | |
2943 | ||
2944 | Note that the errno value set by a failing fdopen | |
2945 | varies between stdio implementations. | |
2946 | */ | |
375ed12a JH |
2947 | const int fd = PerlLIO_dup(fd0); |
2948 | FILE *f2; | |
2949 | if (fd < 0) { | |
2950 | return f; | |
2951 | } | |
2952 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2953 | if (!f2) { |
a33cf58c | 2954 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2955 | } |
2956 | if (!f2) { | |
a33cf58c | 2957 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2958 | } |
2959 | if (!f2) { | |
2960 | /* Don't seem to be able to open */ | |
2961 | PerlLIO_close(fd); | |
2962 | return f; | |
2963 | } | |
2964 | fclose(f2); | |
22569500 | 2965 | } |
de092133 | 2966 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2967 | s = PerlIOSelf(f, PerlIOStdio); |
2968 | s->stdio = stdio; | |
c586124f | 2969 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2970 | } |
14a5cf38 JH |
2971 | } |
2972 | return f; | |
9e353e3b NIS |
2973 | } |
2974 | ||
2975 | PerlIO * | |
14a5cf38 JH |
2976 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2977 | IV n, const char *mode, int fd, int imode, | |
2978 | int perm, PerlIO *f, int narg, SV **args) | |
2979 | { | |
2980 | char tmode[8]; | |
d9dac8cd | 2981 | if (PerlIOValid(f)) { |
41188aa0 TC |
2982 | STRLEN len; |
2983 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 2984 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 2985 | FILE *stdio; |
41188aa0 | 2986 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 2987 | return NULL; |
1751d015 | 2988 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
2989 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
2990 | s->stdio); | |
14a5cf38 JH |
2991 | if (!s->stdio) |
2992 | return NULL; | |
2993 | s->stdio = stdio; | |
1751d015 | 2994 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2995 | return f; |
2996 | } | |
2997 | else { | |
2998 | if (narg > 0) { | |
41188aa0 TC |
2999 | STRLEN len; |
3000 | const char * const path = SvPV_const(*args, len); | |
3001 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 3002 | return NULL; |
3b6c1aba | 3003 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3004 | mode++; |
3005 | fd = PerlLIO_open3(path, imode, perm); | |
3006 | } | |
3007 | else { | |
95005ad8 GH |
3008 | FILE *stdio; |
3009 | bool appended = FALSE; | |
3010 | #ifdef __CYGWIN__ | |
3011 | /* Cygwin wants its 'b' early. */ | |
3012 | appended = TRUE; | |
3013 | mode = PerlIOStdio_mode(mode, tmode); | |
3014 | #endif | |
3015 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3016 | if (stdio) { |
6f0313ac JH |
3017 | if (!f) { |
3018 | f = PerlIO_allocate(aTHX); | |
3019 | } | |
95005ad8 GH |
3020 | if (!appended) |
3021 | mode = PerlIOStdio_mode(mode, tmode); | |
3022 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3023 | if (f) { | |
0f0f9e2b JH |
3024 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3025 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3026 | } else { | |
3027 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3028 | } |
3029 | return f; | |
3030 | } | |
3031 | else { | |
3032 | return NULL; | |
3033 | } | |
14a5cf38 JH |
3034 | } |
3035 | } | |
3036 | if (fd >= 0) { | |
3037 | FILE *stdio = NULL; | |
3038 | int init = 0; | |
3b6c1aba | 3039 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3040 | init = 1; |
3041 | mode++; | |
3042 | } | |
3043 | if (init) { | |
3044 | switch (fd) { | |
3045 | case 0: | |
3046 | stdio = PerlSIO_stdin; | |
3047 | break; | |
3048 | case 1: | |
3049 | stdio = PerlSIO_stdout; | |
3050 | break; | |
3051 | case 2: | |
3052 | stdio = PerlSIO_stderr; | |
3053 | break; | |
3054 | } | |
3055 | } | |
3056 | else { | |
3057 | stdio = PerlSIO_fdopen(fd, mode = | |
3058 | PerlIOStdio_mode(mode, tmode)); | |
3059 | } | |
3060 | if (stdio) { | |
d9dac8cd NIS |
3061 | if (!f) { |
3062 | f = PerlIO_allocate(aTHX); | |
3063 | } | |
a33cf58c | 3064 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3065 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3066 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3067 | } |
14a5cf38 JH |
3068 | return f; |
3069 | } | |
0a20f69b | 3070 | PerlLIO_close(fd); |
14a5cf38 JH |
3071 | } |
3072 | } | |
ee518936 | 3073 | return NULL; |
9e353e3b NIS |
3074 | } |
3075 | ||
1751d015 | 3076 | PerlIO * |
ecdeb87c | 3077 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3078 | { |
3079 | /* This assumes no layers underneath - which is what | |
3080 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3081 | */ | |
ecdeb87c | 3082 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3083 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3084 | const int fd = fileno(stdio); |
9217ff3f | 3085 | char mode[8]; |
ecdeb87c | 3086 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3087 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3088 | if (dfd >= 0) { |
3089 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3090 | goto set_this; | |
ecdeb87c NIS |
3091 | } |
3092 | else { | |
6f207bd3 | 3093 | NOOP; |
ecdeb87c NIS |
3094 | /* FIXME: To avoid messy error recovery if dup fails |
3095 | re-use the existing stdio as though flag was not set | |
3096 | */ | |
3097 | } | |
3098 | } | |
9217ff3f NIS |
3099 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3100 | set_this: | |
694c95cf | 3101 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3102 | if(stdio) { |
3103 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3104 | } | |
1751d015 NIS |
3105 | } |
3106 | return f; | |
3107 | } | |
3108 | ||
0d7a5398 NIS |
3109 | static int |
3110 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3111 | { | |
96a5add6 AL |
3112 | PERL_UNUSED_CONTEXT; |
3113 | ||
0d7a5398 | 3114 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3115 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3116 | */ |
ef8eacb8 AT |
3117 | # if defined(__UCLIBC__) |
3118 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3119 | f->__filedes = -1; | |
3120 | return 1; | |
3121 | # elif defined(__GLIBC__) | |
0d7a5398 | 3122 | /* There may be a better way for GLIBC: |
37725cdc | 3123 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3124 | */ |
3125 | f->_fileno = -1; | |
3126 | return 1; | |
bdea967c | 3127 | # elif defined(__sun) |
f5992bc4 | 3128 | PERL_UNUSED_ARG(f); |
cfedb851 | 3129 | return 0; |
0d7a5398 NIS |
3130 | # elif defined(__hpux) |
3131 | f->__fileH = 0xff; | |
3132 | f->__fileL = 0xff; | |
3133 | return 1; | |
9837d373 | 3134 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3135 | your platform does not have special entry try this one. |
9837d373 NIS |
3136 | [For OSF only have confirmation for Tru64 (alpha) |
3137 | but assume other OSFs will be similar.] | |
37725cdc | 3138 | */ |
9837d373 | 3139 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3140 | f->_file = -1; |
3141 | return 1; | |
3142 | # elif defined(__FreeBSD__) | |
3143 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3144 | - we could insert a dummy func in the _close function entry |
3145 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3146 | */ |
3147 | f->_file = -1; | |
0c49ea6a SU |
3148 | return 1; |
3149 | # elif defined(__OpenBSD__) | |
3150 | /* There may be a better way on OpenBSD: | |
3151 | - we could insert a dummy func in the _close function entry | |
3152 | f->_close = (int (*)(void *)) dummy_close; | |
3153 | */ | |
3154 | f->_file = -1; | |
0d7a5398 | 3155 | return 1; |
59ad941d IZ |
3156 | # elif defined(__EMX__) |
3157 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3158 | f->_handle = -1; | |
3159 | return 1; | |
0d7a5398 NIS |
3160 | # elif defined(__CYGWIN__) |
3161 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3162 | - we could insert a dummy func in the _close function entry |
3163 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3164 | */ |
3165 | f->_file = -1; | |
3166 | return 1; | |
3167 | # elif defined(WIN32) | |
378eeda7 | 3168 | # if defined(UNDER_CE) |
b475b3e6 JH |
3169 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3170 | structure at all | |
3171 | */ | |
0d7a5398 NIS |
3172 | # else |
3173 | f->_file = -1; | |
3174 | # endif | |
3175 | return 1; | |
3176 | # else | |
3177 | #if 0 | |
37725cdc | 3178 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3179 | (which isn't thread safe) instead |
37725cdc | 3180 | */ |
0d7a5398 NIS |
3181 | # error "Don't know how to set FILE.fileno on your platform" |
3182 | #endif | |
8772537c | 3183 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3184 | return 0; |
3185 | # endif | |
3186 | } | |
3187 | ||
1751d015 | 3188 | IV |
f62ce20a | 3189 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3190 | { |
c4420975 | 3191 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3192 | if (!stdio) { |
3193 | errno = EBADF; | |
3194 | return -1; | |
3195 | } | |
9217ff3f | 3196 | else { |
de009b76 | 3197 | const int fd = fileno(stdio); |
0d7a5398 | 3198 | int invalidate = 0; |
bbfd922f | 3199 | IV result = 0; |
1d791a44 | 3200 | int dupfd = -1; |
4ee39169 | 3201 | dSAVEDERRNO; |
a2e578da MHM |
3202 | #ifdef USE_ITHREADS |
3203 | dVAR; | |
3204 | #endif | |
0d7a5398 | 3205 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3206 | /* Socks lib overrides close() but stdio isn't linked to |
3207 | that library (though we are) - so we must call close() | |
3208 | on sockets on stdio's behalf. | |
3209 | */ | |
0d7a5398 NIS |
3210 | int optval; |
3211 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3212 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3213 | invalidate = 1; |
0d7a5398 | 3214 | #endif |
d8723f43 NC |
3215 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3216 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3217 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3218 | trying to close an already closed handle which somehow it still has | |
3219 | a reference to. (via.xs, I'm looking at you). */ | |
3220 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3221 | /* File descriptor still in use */ | |
0d7a5398 | 3222 | invalidate = 1; |
d8723f43 | 3223 | } |
0d7a5398 | 3224 | if (invalidate) { |
6b4ce6c8 AL |
3225 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3226 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3227 | return 0; | |
3228 | if (stdio == stdout || stdio == stderr) | |
3229 | return PerlIO_flush(f); | |
37725cdc NIS |
3230 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3231 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3232 | fileno slot of the FILE * | |
3233 | */ | |
bbfd922f | 3234 | result = PerlIO_flush(f); |
4ee39169 | 3235 | SAVE_ERRNO; |
6b4ce6c8 | 3236 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3237 | if (!invalidate) { |
9bab90c0 NC |
3238 | #ifdef USE_ITHREADS |
3239 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3240 | /* Right. We need a mutex here because for a brief while we |
3241 | will have the situation that fd is actually closed. Hence if | |
3242 | a second thread were to get into this block, its dup() would | |
3243 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3244 | Then if we get to the dup2() first, we blat the fd back |
3245 | (messing up its temporary as a side effect) only for it to | |
3246 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3247 | ||
3248 | /* There is, of course, a race condition, that any other thread | |
3249 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3250 | for the duration of this little manoeuvrer. Perhaps we |
3251 | should hold an IO mutex for the duration of every IO | |
3252 | operation if we know that invalidate doesn't work on this | |
3253 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3254 | |
3255 | Except that correctness trumps speed. | |
3256 | Advice from klortho #11912. */ | |
3257 | #endif | |
6b4ce6c8 | 3258 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3259 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3260 | if (dupfd < 0) { |
3261 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3262 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3263 | recover from here, or if closing this particular FILE * | |
3264 | is a good idea now. */ | |
3265 | } | |
3266 | #endif | |
3267 | } | |
94ccb807 JH |
3268 | } else { |
3269 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3270 | } |
0d7a5398 | 3271 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3272 | /* We treat error from stdio as success if we invalidated |
3273 | errno may NOT be expected EBADF | |
e8529473 NIS |
3274 | */ |
3275 | if (invalidate && result != 0) { | |
4ee39169 | 3276 | RESTORE_ERRNO; |
0d7a5398 | 3277 | result = 0; |
37725cdc | 3278 | } |
6b4ce6c8 AL |
3279 | #ifdef SOCKS5_VERSION_NAME |
3280 | /* in SOCKS' case, let close() determine return value */ | |
3281 | result = close(fd); | |
3282 | #endif | |
1d791a44 | 3283 | if (dupfd >= 0) { |
0d7a5398 | 3284 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3285 | PerlLIO_close(dupfd); |
711e8db2 | 3286 | #ifdef USE_ITHREADS |
9bab90c0 | 3287 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3288 | #endif |
9217ff3f NIS |
3289 | } |
3290 | return result; | |
37725cdc | 3291 | } |
1751d015 NIS |
3292 | } |
3293 | ||
9e353e3b | 3294 | SSize_t |
f62ce20a | 3295 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3296 | { |
abf9167d | 3297 | FILE * s; |
14a5cf38 | 3298 | SSize_t got = 0; |
abf9167d DM |
3299 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3300 | return -1; | |
3301 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3302 | for (;;) { |
3303 | if (count == 1) { | |
3304 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3305 | /* | |
3306 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3307 | * stdio does not do that for fread() | |
3308 | */ | |
de009b76 | 3309 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3310 | if (ch != EOF) { |
3311 | *buf = ch; | |
3312 | got = 1; | |
3313 | } | |
14a5cf38 | 3314 | } |
4d948241 NIS |
3315 | else |
3316 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3317 | if (got == 0 && PerlSIO_ferror(s)) |
3318 | got = -1; | |
42a7a32f | 3319 | if (got >= 0 || errno != EINTR) |
4d948241 | 3320 | break; |
abf9167d DM |
3321 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3322 | return -1; | |
42a7a32f | 3323 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3324 | } |
14a5cf38 | 3325 | return got; |
9e353e3b NIS |
3326 | } |
3327 | ||
3328 | SSize_t | |
f62ce20a | 3329 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3330 | { |
14a5cf38 | 3331 | SSize_t unread = 0; |
c4420975 | 3332 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3333 | |
313e59c8 | 3334 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3335 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3336 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3337 | STDCHAR *base = PerlIO_get_base(f); | |
3338 | SSize_t cnt = PerlIO_get_cnt(f); | |
3339 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3340 | SSize_t avail = ptr - base; | |
3341 | if (avail > 0) { | |
3342 | if (avail > count) { | |
3343 | avail = count; | |
3344 | } | |
3345 | ptr -= avail; | |
3346 | Move(buf-avail,ptr,avail,STDCHAR); | |
3347 | count -= avail; | |
3348 | unread += avail; | |
3349 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3350 | if (PerlSIO_feof(s) && unread >= 0) |
3351 | PerlSIO_clearerr(s); | |
3352 | } | |
3353 | } | |
313e59c8 NIS |
3354 | else |
3355 | #endif | |
3356 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3357 | /* We can get pointer to buffer but not its base |
3358 | Do ungetc() but check chars are ending up in the | |
3359 | buffer | |
3360 | */ | |
3361 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3362 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3363 | while (count > 0) { | |
de009b76 | 3364 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3365 | if (ungetc(ch,s) != ch) { |
3366 | /* ungetc did not work */ | |
3367 | break; | |
3368 | } | |
3369 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3370 | /* Did not change pointer as expected */ | |
375ed12a JH |
3371 | if (fgetc(s) != EOF) /* get char back again */ |
3372 | break; | |
9f7cd136 NIS |
3373 | } |
3374 | /* It worked ! */ | |
3375 | count--; | |
3376 | unread++; | |
93679785 NIS |
3377 | } |
3378 | } | |
3379 | ||
3380 | if (count > 0) { | |
3381 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3382 | } |
3383 | return unread; | |
9e353e3b NIS |
3384 | } |
3385 | ||
3386 | SSize_t | |
f62ce20a | 3387 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3388 | { |
4d948241 | 3389 | SSize_t got; |
abf9167d DM |
3390 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3391 | return -1; | |
4d948241 NIS |
3392 | for (;;) { |
3393 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3394 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3395 | if (got >= 0 || errno != EINTR) |
4d948241 | 3396 | break; |
abf9167d DM |
3397 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3398 | return -1; | |
42a7a32f | 3399 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3400 | } |
3401 | return got; | |
9e353e3b NIS |
3402 | } |
3403 | ||
94a175e1 | 3404 | IV |
f62ce20a | 3405 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3406 | { |
c4420975 | 3407 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3408 | PERL_UNUSED_CONTEXT; |
3409 | ||
94a175e1 | 3410 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3411 | } |
3412 | ||
3413 | Off_t | |
f62ce20a | 3414 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3415 | { |
c4420975 | 3416 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3417 | PERL_UNUSED_CONTEXT; |
3418 | ||
94a175e1 | 3419 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3420 | } |
3421 | ||
3422 | IV | |
f62ce20a | 3423 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3424 | { |
c4420975 | 3425 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3426 | PERL_UNUSED_CONTEXT; |
3427 | ||
14a5cf38 JH |
3428 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3429 | return PerlSIO_fflush(stdio); | |
3430 | } | |
3431 | else { | |
6f207bd3 | 3432 | NOOP; |
88b61e10 | 3433 | #if 0 |
14a5cf38 JH |
3434 | /* |
3435 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3436 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3437 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3438 | * layer read-to-read |
14a5cf38 JH |
3439 | */ |
3440 | /* | |
71200d45 | 3441 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3442 | */ |
4ee39169 | 3443 | dSAVE_ERRNO; |
14a5cf38 | 3444 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3445 | RESTORE_ERRNO; |
88b61e10 | 3446 | #endif |
14a5cf38 JH |
3447 | } |
3448 | return 0; | |
9e353e3b NIS |
3449 | } |
3450 | ||
3451 | IV | |
f62ce20a | 3452 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3453 | { |
96a5add6 AL |
3454 | PERL_UNUSED_CONTEXT; |
3455 | ||
14a5cf38 | 3456 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3457 | } |
3458 | ||
3459 | IV | |
f62ce20a | 3460 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3461 | { |
96a5add6 AL |
3462 | PERL_UNUSED_CONTEXT; |
3463 | ||
263df5f1 | 3464 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3465 | } |
3466 | ||
3467 | void | |
f62ce20a | 3468 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3469 | { |
96a5add6 AL |
3470 | PERL_UNUSED_CONTEXT; |
3471 | ||
14a5cf38 | 3472 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3473 | } |
3474 | ||
3475 | void | |
f62ce20a | 3476 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3477 | { |
96a5add6 AL |
3478 | PERL_UNUSED_CONTEXT; |
3479 | ||
9e353e3b | 3480 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3481 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3482 | #else |
bd61b366 | 3483 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3484 | #endif |
3485 | } | |
3486 | ||
3487 | #ifdef FILE_base | |
3488 | STDCHAR * | |
f62ce20a | 3489 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3490 | { |
c4420975 | 3491 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3492 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3493 | } |
3494 | ||
3495 | Size_t | |
f62ce20a | 3496 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3497 | { |
c4420975 | 3498 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3499 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3500 | } |
3501 | #endif | |
3502 | ||
3503 | #ifdef USE_STDIO_PTR | |
3504 | STDCHAR * | |
f62ce20a | 3505 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3506 | { |
c4420975 | 3507 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3508 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3509 | } |
3510 | ||
3511 | SSize_t | |
f62ce20a | 3512 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3513 | { |
c4420975 | 3514 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3515 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3516 | } |
3517 | ||
3518 | void | |
f62ce20a | 3519 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3520 | { |
c4420975 | 3521 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3522 | if (ptr != NULL) { |
9e353e3b | 3523 | #ifdef STDIO_PTR_LVALUE |
46f05249 JH |
3524 | /* This is a long-standing infamous mess. The root of the |
3525 | * problem is that one cannot know the signedness of char, and | |
3526 | * more precisely the signedness of FILE._ptr. The following | |
3527 | * things have been tried, and they have all failed (across | |
3528 | * different compilers (remember that core needs to to build | |
3529 | * also with c++) and compiler options: | |
3530 | * | |
3531 | * - casting the RHS to (void*) -- works in *some* places | |
3532 | * - casting the LHS to (void*) -- totally unportable | |
3533 | * | |
3534 | * So let's try silencing the warning at least for gcc. */ | |
3535 | GCC_DIAG_IGNORE(-Wpointer-sign); | |
d06fc7d4 | 3536 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
46f05249 | 3537 | GCC_DIAG_RESTORE; |
9e353e3b | 3538 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3539 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3540 | #endif |
3541 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3542 | /* |
71200d45 | 3543 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3544 | */ |
3545 | return; | |
9e353e3b | 3546 | #endif |
22569500 | 3547 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3548 | PerlProc_abort(); |
22569500 | 3549 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3550 | } |
3551 | /* | |
71200d45 | 3552 | * Now (or only) set cnt |
14a5cf38 | 3553 | */ |
9e353e3b | 3554 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3555 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3556 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3557 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3558 | PerlSIO_set_ptr(stdio, |
3559 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3560 | cnt)); | |
22569500 | 3561 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3562 | PerlProc_abort(); |
22569500 NIS |
3563 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3564 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3565 | } |
3566 | ||
93679785 | 3567 | |
9e353e3b NIS |
3568 | #endif |
3569 | ||
93679785 NIS |
3570 | IV |
3571 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3572 | { | |
abf9167d | 3573 | FILE * stdio; |
93679785 | 3574 | int c; |
96a5add6 | 3575 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3576 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3577 | return -1; | |
3578 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3579 | |
93679785 NIS |
3580 | /* |
3581 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3582 | */ | |
3583 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3584 | if (PerlSIO_fflush(stdio) != 0) | |
3585 | return EOF; | |
3586 | } | |
f3be3723 BL |
3587 | for (;;) { |
3588 | c = PerlSIO_fgetc(stdio); | |
3589 | if (c != EOF) | |
3590 | break; | |
3591 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3592 | return EOF; | |
abf9167d DM |
3593 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3594 | return -1; | |
f3be3723 BL |
3595 | SETERRNO(0,0); |
3596 | } | |
93679785 NIS |
3597 | |
3598 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3599 | |
3600 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3601 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3602 | /* Fake ungetc() to the real buffer in case system's ungetc |
3603 | goes elsewhere | |
3604 | */ | |
3605 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3606 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3607 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3608 | if (ptr == base+1) { | |
3609 | *--ptr = (STDCHAR) c; | |
3610 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3611 | if (PerlSIO_feof(stdio)) | |
3612 | PerlSIO_clearerr(stdio); | |
3613 | return 0; | |
3614 | } | |
3615 | } | |
313e59c8 NIS |
3616 | else |
3617 | #endif | |
3618 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3619 | STDCHAR ch = c; |
3620 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3621 | return 0; | |
3622 | } | |
3623 | } | |
93679785 NIS |
3624 | #endif |
3625 | ||
93679785 | 3626 | /* If buffer snoop scheme above fails fall back to |
9f7cd136 | 3627 | using ungetc(). |
93679785 NIS |
3628 | */ |
3629 | if (PerlSIO_ungetc(c, stdio) != c) | |
3630 | return EOF; | |
5876737a | 3631 | |
93679785 NIS |
3632 | return 0; |
3633 | } | |
3634 | ||
3635 | ||
3636 | ||
27da23d5 | 3637 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3638 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3639 | "stdio", |
3640 | sizeof(PerlIOStdio), | |
86e05cf2 | 3641 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3642 | PerlIOStdio_pushed, |
2376d97d | 3643 | PerlIOBase_popped, |
14a5cf38 | 3644 | PerlIOStdio_open, |
86e05cf2 | 3645 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3646 | NULL, |
3647 | PerlIOStdio_fileno, | |
71200d45 | 3648 | PerlIOStdio_dup, |
14a5cf38 JH |
3649 | PerlIOStdio_read, |
3650 | PerlIOStdio_unread, | |
3651 | PerlIOStdio_write, | |
3652 | PerlIOStdio_seek, | |
3653 | PerlIOStdio_tell, | |
3654 | PerlIOStdio_close, | |
3655 | PerlIOStdio_flush, | |
3656 | PerlIOStdio_fill, | |
3657 | PerlIOStdio_eof, | |
3658 | PerlIOStdio_error, | |
3659 | PerlIOStdio_clearerr, | |
3660 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3661 | #ifdef FILE_base |
14a5cf38 JH |
3662 | PerlIOStdio_get_base, |
3663 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3664 | #else |
14a5cf38 JH |
3665 | NULL, |
3666 | NULL, | |
9e353e3b NIS |
3667 | #endif |
3668 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3669 | PerlIOStdio_get_ptr, |
3670 | PerlIOStdio_get_cnt, | |
15b61c98 | 3671 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3672 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3673 | # else |
3674 | NULL, | |
3675 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3676 | #else | |
3677 | NULL, | |
14a5cf38 JH |
3678 | NULL, |
3679 | NULL, | |
15b61c98 | 3680 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3681 | }; |
3682 | ||
b9d6bf13 JH |
3683 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3684 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3685 | FILE * |
81428673 | 3686 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3687 | { |
e87a358a | 3688 | dTHX; |
81428673 NIS |
3689 | FILE *stdio = NULL; |
3690 | if (PerlIOValid(f)) { | |
3691 | char buf[8]; | |
375ed12a JH |
3692 | int fd = PerlIO_fileno(f); |
3693 | if (fd < 0) { | |
3694 | return NULL; | |
3695 | } | |
81428673 NIS |
3696 | PerlIO_flush(f); |
3697 | if (!mode || !*mode) { | |
3698 | mode = PerlIO_modestr(f, buf); | |
3699 | } | |
3700 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3701 | if (stdio) { | |
3702 | PerlIOl *l = *f; | |
9f75cc58 | 3703 | PerlIO *f2; |
81428673 NIS |
3704 | /* De-link any lower layers so new :stdio sticks */ |
3705 | *f = NULL; | |
a0714e2c | 3706 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3707 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3708 | s->stdio = stdio; |
6b54a403 | 3709 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3710 | /* Link previous lower layers under new one */ |
3711 | *PerlIONext(f) = l; | |
3712 | } | |
3713 | else { | |
3714 | /* restore layers list */ | |
3715 | *f = l; | |
3716 | } | |
a33cf58c | 3717 | } |
14a5cf38 JH |
3718 | } |
3719 | return stdio; | |
9e353e3b NIS |
3720 | } |
3721 | ||
81428673 | 3722 | |
9e353e3b NIS |
3723 | FILE * |
3724 | PerlIO_findFILE(PerlIO *f) | |
3725 | { | |
14a5cf38 | 3726 | PerlIOl *l = *f; |
bbbc33d0 | 3727 | FILE *stdio; |
14a5cf38 JH |
3728 | while (l) { |
3729 | if (l->tab == &PerlIO_stdio) { | |
3730 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3731 | return s->stdio; | |
3732 | } | |
3733 | l = *PerlIONext(&l); | |
f7e7eb72 | 3734 | } |
4b069b44 | 3735 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3736 | /* However, we're not really exporting a FILE * to someone else (who |
3737 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3738 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3739 | descriptor. We have to do this, because if the loop above returns you |
3740 | the FILE *, then *it* didn't increase any reference count. So there's | |
3741 | only one way to be consistent. */ | |
3742 | stdio = PerlIO_exportFILE(f, NULL); | |
3743 | if (stdio) { | |
3744 | const int fd = fileno(stdio); | |
3745 | if (fd >= 0) | |
3746 | PerlIOUnix_refcnt_dec(fd); | |
3747 | } | |
3748 | return stdio; | |
9e353e3b NIS |
3749 | } |
3750 | ||
b9d6bf13 | 3751 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3752 | void |
3753 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3754 | { | |
22569500 NIS |
3755 | PerlIOl *l; |
3756 | while ((l = *p)) { | |
3757 | if (l->tab == &PerlIO_stdio) { | |
3758 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3759 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3760 | const int fd = fileno(f); |
3761 | if (fd >= 0) | |
3762 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3763 | { |
3764 | dTHX; | |
3765 | PerlIO_pop(aTHX_ p); | |
3766 | } | |
22569500 NIS |
3767 | return; |
3768 | } | |
3769 | } | |
3770 | p = PerlIONext(p); | |
3771 | } | |
3772 | return; | |
9e353e3b NIS |
3773 | } |
3774 | ||
3775 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3776 | /* |
71200d45 | 3777 | * perlio buffer layer |
14a5cf38 | 3778 | */ |
9e353e3b | 3779 | |
5e2ab84b | 3780 | IV |
2dc2558e | 3781 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3782 | { |
14a5cf38 | 3783 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3784 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3785 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3786 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3787 | } | |
4b069b44 | 3788 | if (*PerlIONext(f)) { |
de009b76 | 3789 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3790 | if (posn != (Off_t) - 1) { |
3791 | b->posn = posn; | |
3792 | } | |
14a5cf38 | 3793 | } |
2dc2558e | 3794 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3795 | } |
3796 | ||
9e353e3b | 3797 | PerlIO * |
14a5cf38 JH |
3798 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3799 | IV n, const char *mode, int fd, int imode, int perm, | |
3800 | PerlIO *f, int narg, SV **args) | |
3801 | { | |
04892f78 | 3802 | if (PerlIOValid(f)) { |
14a5cf38 | 3803 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3804 | PerlIO_funcs *tab = |
3805 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3806 | if (tab && tab->Open) | |
3807 | next = | |
3808 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3809 | next, narg, args); | |
2dc2558e | 3810 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3811 | return NULL; |
3812 | } | |
3813 | } | |
3814 | else { | |
04892f78 | 3815 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3816 | int init = 0; |
3b6c1aba | 3817 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3818 | init = 1; |
3819 | /* | |
71200d45 | 3820 | * mode++; |
14a5cf38 JH |
3821 | */ |
3822 | } | |
67363c0d JH |
3823 | if (tab && tab->Open) |
3824 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3825 | f, narg, args); | |
3826 | else | |
3827 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3828 | if (f) { |
22569500 | 3829 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3830 | /* |
3831 | * if push fails during open, open fails. close will pop us. | |
3832 | */ | |
3833 | PerlIO_close (f); | |
3834 | return NULL; | |
3835 | } else { | |
3836 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3837 | if (init && fd == 2) { |
3838 | /* | |
3839 | * Initial stderr is unbuffered | |
3840 | */ | |
3841 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3842 | } | |
23b84778 IZ |
3843 | #ifdef PERLIO_USING_CRLF |
3844 | # ifdef PERLIO_IS_BINMODE_FD | |
3845 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3846 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3847 | else |
3848 | # endif | |
3849 | /* | |
3850 | * do something about failing setmode()? --jhi | |
3851 | */ | |
3852 | PerlLIO_setmode(fd, O_BINARY); | |
3853 | #endif | |
8c8488cd | 3854 | #ifdef VMS |
8c8488cd CB |
3855 | /* Enable line buffering with record-oriented regular files |
3856 | * so we don't introduce an extraneous record boundary when | |
3857 | * the buffer fills up. | |
3858 | */ | |
3859 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3860 | Stat_t st; | |
3861 | if (PerlLIO_fstat(fd, &st) == 0 | |
3862 | && S_ISREG(st.st_mode) | |
3863 | && (st.st_fab_rfm == FAB$C_VAR | |
3864 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3865 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3866 | } | |
3867 | } | |
3868 | #endif | |
14a5cf38 JH |
3869 | } |
3870 | } | |
ee518936 | 3871 | } |
14a5cf38 | 3872 | return f; |
9e353e3b NIS |
3873 | } |
3874 | ||
14a5cf38 JH |
3875 | /* |
3876 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3877 | * read or write state. For write state, we put the postponed data through |
3878 | * the next layers. For read state, we seek() the next layers to the | |
3879 | * offset given by current position in the buffer, and discard the buffer | |
3880 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3881 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3882 | */ |
9e353e3b | 3883 | IV |
f62ce20a | 3884 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3885 | { |
dcda55fc | 3886 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3887 | int code = 0; |
04892f78 | 3888 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3889 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3890 | /* | |
71200d45 | 3891 | * write() the buffer |
14a5cf38 | 3892 | */ |
de009b76 AL |
3893 | const STDCHAR *buf = b->buf; |
3894 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3895 | while (p < b->ptr) { |
3896 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3897 | if (count > 0) { | |
3898 | p += count; | |
3899 | } | |
3900 | else if (count < 0 || PerlIO_error(n)) { | |
3901 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3902 | code = -1; | |
3903 | break; | |
3904 | } | |
3905 | } | |
3906 | b->posn += (p - buf); | |
3907 | } | |
3908 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3909 | STDCHAR *buf = PerlIO_get_base(f); | |
3910 | /* | |
71200d45 | 3911 | * Note position change |
14a5cf38 JH |
3912 | */ |
3913 | b->posn += (b->ptr - buf); | |
3914 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3915 | /* We did not consume all of it - try and seek downstream to |
3916 | our logical position | |
14a5cf38 | 3917 | */ |
4b069b44 | 3918 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3919 | /* Reload n as some layers may pop themselves on seek */ |
3920 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3921 | } |
ba5c3fe9 | 3922 | else { |
4b069b44 NIS |
3923 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3924 | data is lost for good - so return saying "ok" having undone | |
3925 | the position adjust | |
3926 | */ | |
3927 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3928 | return code; |
3929 | } | |
14a5cf38 JH |
3930 | } |
3931 | } | |
3932 | b->ptr = b->end = b->buf; | |
3933 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3934 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3935 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3936 | code = -1; |
3937 | return code; | |
6f9d8c32 NIS |
3938 | } |
3939 | ||
93c2c2ec IZ |
3940 | /* This discards the content of the buffer after b->ptr, and rereads |
3941 | * the buffer from the position off in the layer downstream; here off | |
3942 | * is at offset corresponding to b->ptr - b->buf. | |
3943 | */ | |
06da4f11 | 3944 | IV |
f62ce20a | 3945 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3946 | { |
dcda55fc | 3947 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3948 | PerlIO *n = PerlIONext(f); |
3949 | SSize_t avail; | |
3950 | /* | |
4b069b44 NIS |
3951 | * Down-stream flush is defined not to loose read data so is harmless. |
3952 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3953 | */ |
93c2c2ec | 3954 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3955 | return -1; |
3956 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3957 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3958 | |
3959 | if (!b->buf) | |
22569500 | 3960 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3961 | |
0f0eef27 | 3962 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3963 | |
14a5cf38 | 3964 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3965 | |
3966 | if (!PerlIOValid(n)) { | |
3967 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3968 | return -1; | |
3969 | } | |
3970 | ||
14a5cf38 JH |
3971 | if (PerlIO_fast_gets(n)) { |
3972 | /* | |
04892f78 | 3973 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3974 | * ->Read() because that will loop till it gets what we asked for |
3975 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3976 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3977 | */ |
3978 | avail = PerlIO_get_cnt(n); | |
3979 | if (avail <= 0) { | |
3980 | avail = PerlIO_fill(n); | |
3981 | if (avail == 0) | |
3982 | avail = PerlIO_get_cnt(n); | |
3983 | else { | |
3984 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3985 | avail = 0; | |
3986 | } | |
3987 | } | |
3988 | if (avail > 0) { | |
3989 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3990 | const SSize_t cnt = avail; |
eb160463 | 3991 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3992 | avail = b->bufsiz; |
3993 | Copy(ptr, b->buf, avail, STDCHAR); | |
3994 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3995 | } | |
3996 | } | |
3997 | else { | |
3998 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3999 | } | |
4000 | if (avail <= 0) { | |
4001 | if (avail == 0) | |
4002 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4003 | else | |
4004 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
4005 | return -1; | |
4006 | } | |
4007 | b->end = b->buf + avail; | |
4008 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4009 | return 0; | |
06da4f11 NIS |
4010 | } |
4011 | ||
6f9d8c32 | 4012 | SSize_t |
f62ce20a | 4013 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4014 | { |
04892f78 | 4015 | if (PerlIOValid(f)) { |
dcda55fc | 4016 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4017 | if (!b->ptr) |
4018 | PerlIO_get_base(f); | |
f62ce20a | 4019 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4020 | } |
4021 | return 0; | |
6f9d8c32 NIS |
4022 | } |
4023 | ||
9e353e3b | 4024 | SSize_t |
f62ce20a | 4025 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4026 | { |
14a5cf38 | 4027 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4028 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4029 | SSize_t unread = 0; |
4030 | SSize_t avail; | |
4031 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4032 | PerlIO_flush(f); | |
4033 | if (!b->buf) | |
4034 | PerlIO_get_base(f); | |
4035 | if (b->buf) { | |
4036 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4037 | /* | |
4038 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4039 | * which have been read back to buffer start |
14a5cf38 JH |
4040 | */ |
4041 | avail = (b->ptr - b->buf); | |
4042 | } | |
4043 | else { | |
4044 | /* | |
4045 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4046 | * unread |
14a5cf38 JH |
4047 | */ |
4048 | avail = b->bufsiz; | |
4049 | b->end = b->buf + avail; | |
4050 | b->ptr = b->end; | |
4051 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4052 | /* | |
71200d45 | 4053 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4054 | */ |
4055 | b->posn -= b->bufsiz; | |
4056 | } | |
94e529cc | 4057 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4058 | /* |
71200d45 | 4059 | * If we have space for more than count, just move count |
14a5cf38 JH |
4060 | */ |
4061 | avail = count; | |
4062 | } | |
4063 | if (avail > 0) { | |
4064 | b->ptr -= avail; | |
4065 | buf -= avail; | |
4066 | /* | |
4067 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4068 | * there |
14a5cf38 JH |
4069 | */ |
4070 | if (buf != b->ptr) { | |
4071 | Copy(buf, b->ptr, avail, STDCHAR); | |
4072 | } | |
4073 | count -= avail; | |
4074 | unread += avail; | |
4075 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4076 | } | |
4077 | } | |
93679785 NIS |
4078 | if (count > 0) { |
4079 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4080 | } | |
14a5cf38 | 4081 | return unread; |
760ac839 LW |
4082 | } |
4083 | ||
9e353e3b | 4084 | SSize_t |
f62ce20a | 4085 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4086 | { |
de009b76 | 4087 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4088 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4089 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4090 | Size_t written = 0; |
4091 | if (!b->buf) | |
4092 | PerlIO_get_base(f); | |
4093 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4094 | return 0; | |
0678cb22 NIS |
4095 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4096 | if (PerlIO_flush(f) != 0) { | |
4097 | return 0; | |
4098 | } | |
4099 | } | |
ee56a6b9 CS |
4100 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4101 | flushptr = buf + count; | |
4102 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4103 | --flushptr; | |
4104 | } | |
14a5cf38 JH |
4105 | while (count > 0) { |
4106 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4107 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4108 | avail = count; |
ee56a6b9 CS |
4109 | if (flushptr > buf && flushptr <= buf + avail) |
4110 | avail = flushptr - buf; | |
14a5cf38 | 4111 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4112 | if (avail) { |
4113 | Copy(buf, b->ptr, avail, STDCHAR); | |
4114 | count -= avail; | |
4115 | buf += avail; | |
4116 | written += avail; | |
4117 | b->ptr += avail; | |
4118 | if (buf == flushptr) | |
4119 | PerlIO_flush(f); | |
14a5cf38 JH |
4120 | } |
4121 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4122 | if (PerlIO_flush(f) == -1) |
4123 | return -1; | |
14a5cf38 JH |
4124 | } |
4125 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4126 | PerlIO_flush(f); | |
4127 | return written; | |
9e353e3b NIS |
4128 | } |
4129 | ||
94a175e1 | 4130 | IV |
f62ce20a | 4131 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4132 | { |
14a5cf38 JH |
4133 | IV code; |
4134 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4135 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4136 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4137 | if (code == 0) { | |
de009b76 | 4138 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4139 | b->posn = PerlIO_tell(PerlIONext(f)); |
4140 | } | |
9e353e3b | 4141 | } |
14a5cf38 | 4142 | return code; |
9e353e3b NIS |
4143 | } |
4144 | ||
4145 | Off_t | |
f62ce20a | 4146 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4147 | { |
dcda55fc | 4148 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4149 | /* |
71200d45 | 4150 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4151 | */ |
4152 | Off_t posn = b->posn; | |
37725cdc | 4153 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4154 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4155 | #if 1 | |
4156 | /* As O_APPEND files are normally shared in some sense it is better | |
4157 | to flush : | |
4158 | */ | |
4159 | PerlIO_flush(f); | |
4160 | #else | |
37725cdc | 4161 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4162 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4163 | #endif | |
4164 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4165 | } | |
14a5cf38 JH |
4166 | if (b->buf) { |
4167 | /* | |
71200d45 | 4168 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4169 | */ |
4170 | posn += (b->ptr - b->buf); | |
4171 | } | |
4172 | return posn; | |
9e353e3b NIS |
4173 | } |
4174 | ||
4175 | IV | |
44798d05 NIS |
4176 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4177 | { | |
de009b76 AL |
4178 | const IV code = PerlIOBase_popped(aTHX_ f); |
4179 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4180 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4181 | Safefree(b->buf); | |
4182 | } | |
dcda55fc | 4183 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4184 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4185 | return code; | |
4186 | } | |
4187 | ||
4188 | IV | |
f62ce20a | 4189 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4190 | { |
de009b76 AL |
4191 | const IV code = PerlIOBase_close(aTHX_ f); |
4192 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4193 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4194 | Safefree(b->buf); |
14a5cf38 | 4195 | } |
dcda55fc | 4196 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4197 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4198 | return code; | |
760ac839 LW |
4199 | } |
4200 | ||
9e353e3b | 4201 | STDCHAR * |
f62ce20a | 4202 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4203 | { |
dcda55fc | 4204 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4205 | if (!b->buf) |
4206 | PerlIO_get_base(f); | |
4207 | return b->ptr; | |
9e353e3b NIS |
4208 | } |
4209 | ||
05d1247b | 4210 | SSize_t |
f62ce20a | 4211 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4212 | { |
dcda55fc | 4213 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4214 | if (!b->buf) |
4215 | PerlIO_get_base(f); | |
4216 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4217 | return (b->end - b->ptr); | |
4218 | return 0; | |
9e353e3b NIS |
4219 | } |
4220 | ||
4221 | STDCHAR * | |
f62ce20a | 4222 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4223 | { |
dcda55fc | 4224 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4225 | PERL_UNUSED_CONTEXT; |
4226 | ||
14a5cf38 JH |
4227 | if (!b->buf) { |
4228 | if (!b->bufsiz) | |
1810cd7c | 4229 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4230 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4231 | if (!b->buf) { |
4232 | b->buf = (STDCHAR *) & b->oneword; | |
4233 | b->bufsiz = sizeof(b->oneword); | |
4234 | } | |
dcda55fc | 4235 | b->end = b->ptr = b->buf; |
06da4f11 | 4236 | } |
14a5cf38 | 4237 | return b->buf; |
9e353e3b NIS |
4238 | } |
4239 | ||
4240 | Size_t | |
f62ce20a | 4241 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4242 | { |
dcda55fc | 4243 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4244 | if (!b->buf) |
4245 | PerlIO_get_base(f); | |
4246 | return (b->end - b->buf); | |
9e353e3b NIS |
4247 | } |
4248 | ||
4249 | void | |
f62ce20a | 4250 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4251 | { |
dcda55fc | 4252 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4253 | #ifndef DEBUGGING |
4254 | PERL_UNUSED_ARG(cnt); | |
4255 | #endif | |
14a5cf38 JH |
4256 | if (!b->buf) |
4257 | PerlIO_get_base(f); | |
4258 | b->ptr = ptr; | |
b727803b RGS |
4259 | assert(PerlIO_get_cnt(f) == cnt); |
4260 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4261 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4262 | } |
4263 | ||
71200d45 | 4264 | PerlIO * |
ecdeb87c | 4265 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4266 | { |
ecdeb87c | 4267 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4268 | } |
4269 | ||
4270 | ||
4271 | ||
27da23d5 | 4272 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4273 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4274 | "perlio", |
4275 | sizeof(PerlIOBuf), | |
86e05cf2 | 4276 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4277 | PerlIOBuf_pushed, |
44798d05 | 4278 | PerlIOBuf_popped, |
14a5cf38 | 4279 | PerlIOBuf_open, |
86e05cf2 | 4280 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4281 | NULL, |
4282 | PerlIOBase_fileno, | |
71200d45 | 4283 | PerlIOBuf_dup, |
14a5cf38 JH |
4284 | PerlIOBuf_read, |
4285 | PerlIOBuf_unread, | |
4286 | PerlIOBuf_write, | |
4287 | PerlIOBuf_seek, | |
4288 | PerlIOBuf_tell, | |
4289 | PerlIOBuf_close, | |
4290 | PerlIOBuf_flush, | |
4291 | PerlIOBuf_fill, | |
4292 | PerlIOBase_eof, | |
4293 | PerlIOBase_error, | |
4294 | PerlIOBase_clearerr, | |
4295 | PerlIOBase_setlinebuf, | |
4296 | PerlIOBuf_get_base, | |
4297 | PerlIOBuf_bufsiz, | |
4298 | PerlIOBuf_get_ptr, | |
4299 | PerlIOBuf_get_cnt, | |
4300 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4301 | }; |
4302 | ||
66ecd56b | 4303 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4304 | /* |
71200d45 | 4305 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4306 | */ |
5e2ab84b NIS |
4307 | |
4308 | IV | |
f62ce20a | 4309 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4310 | { |
14a5cf38 | 4311 | /* |
71200d45 | 4312 | * Should never happen |
14a5cf38 JH |
4313 | */ |
4314 | PerlIO_flush(f); | |
4315 | return 0; | |
5e2ab84b NIS |
4316 | } |
4317 | ||
4318 | IV | |
f62ce20a | 4319 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4320 | { |
14a5cf38 | 4321 | /* |
71200d45 | 4322 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4323 | */ |
4324 | PerlIO_flush(f); | |
4325 | return PerlIO_close(f); | |
5e2ab84b NIS |
4326 | } |
4327 | ||
94a175e1 | 4328 | IV |
f62ce20a | 4329 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4330 | { |
14a5cf38 | 4331 | /* |
71200d45 | 4332 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4333 | */ |
4334 | PerlIO_flush(f); | |
4335 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4336 | } |
4337 | ||
4338 | ||
4339 | IV | |
f62ce20a | 4340 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4341 | { |
dcda55fc | 4342 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4343 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4344 | Safefree(b->buf); |
14a5cf38 JH |
4345 | b->buf = NULL; |
4346 | } | |
4347 | PerlIO_pop(aTHX_ f); | |
4348 | return 0; | |
5e2ab84b NIS |
4349 | } |
4350 | ||
4351 | void | |
f62ce20a | 4352 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4353 | { |
14a5cf38 JH |
4354 | if (cnt <= 0) { |
4355 | PerlIO_flush(f); | |
4356 | } | |
4357 | else { | |
f62ce20a | 4358 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4359 | } |
5e2ab84b NIS |
4360 | } |
4361 | ||
4362 | IV | |
2dc2558e | 4363 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4364 | { |
de009b76 | 4365 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4366 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4367 | /* |
71200d45 NIS |
4368 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4369 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4370 | */ |
4371 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4372 | (PerlIOBase(PerlIONext(f))-> | |
4373 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4374 | return code; | |
5e2ab84b NIS |
4375 | } |
4376 | ||
4377 | SSize_t | |
f62ce20a | 4378 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4379 | { |
14a5cf38 JH |
4380 | SSize_t avail = PerlIO_get_cnt(f); |
4381 | SSize_t got = 0; | |
94e529cc | 4382 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4383 | avail = count; |
4384 | if (avail > 0) | |
f62ce20a | 4385 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4386 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4387 | const SSize_t more = |
14a5cf38 JH |
4388 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4389 | if (more >= 0 || got == 0) | |
4390 | got += more; | |
4391 | } | |
4392 | return got; | |
5e2ab84b NIS |
4393 | } |
4394 | ||
27da23d5 | 4395 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4396 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4397 | "pending", |
4398 | sizeof(PerlIOBuf), | |
86e05cf2 | 4399 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4400 | PerlIOPending_pushed, |
44798d05 | 4401 | PerlIOBuf_popped, |
14a5cf38 | 4402 | NULL, |
86e05cf2 | 4403 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4404 | NULL, |
4405 | PerlIOBase_fileno, | |
71200d45 | 4406 | PerlIOBuf_dup, |
14a5cf38 JH |
4407 | PerlIOPending_read, |
4408 | PerlIOBuf_unread, | |
4409 | PerlIOBuf_write, | |
4410 | PerlIOPending_seek, | |
4411 | PerlIOBuf_tell, | |
4412 | PerlIOPending_close, | |
4413 | PerlIOPending_flush, | |
4414 | PerlIOPending_fill, | |
4415 | PerlIOBase_eof, | |
4416 | PerlIOBase_error, | |
4417 | PerlIOBase_clearerr, | |
4418 | PerlIOBase_setlinebuf, | |
4419 | PerlIOBuf_get_base, | |
4420 | PerlIOBuf_bufsiz, | |
4421 | PerlIOBuf_get_ptr, | |
4422 | PerlIOBuf_get_cnt, | |
4423 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4424 | }; |
4425 | ||
4426 | ||
4427 | ||
4428 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4429 | /* |
4430 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4431 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4432 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4433 | * |
4434 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4435 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4436 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4437 | * that it ends at c->nl; these two cases can be distinguished by | |
4438 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4439 | * _unread() and _flush() calls. | |
4440 | * It only matters for read operations. | |
66ecd56b NIS |
4441 | */ |
4442 | ||
14a5cf38 | 4443 | typedef struct { |
22569500 NIS |
4444 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4445 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4446 | * buffer */ |
99efab12 NIS |
4447 | } PerlIOCrlf; |
4448 | ||
ff1e3883 JD |
4449 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4450 | * Otherwise the :crlf layer would always revert back to | |
4451 | * raw mode. | |
4452 | */ | |
4453 | static void | |
4454 | S_inherit_utf8_flag(PerlIO *f) | |
4455 | { | |
4456 | PerlIO *g = PerlIONext(f); | |
4457 | if (PerlIOValid(g)) { | |
4458 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4459 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4460 | } | |
4461 | } | |
4462 | } | |
4463 | ||
f5b9d040 | 4464 | IV |
2dc2558e | 4465 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4466 | { |
14a5cf38 JH |
4467 | IV code; |
4468 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4469 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4470 | #if 0 |
14a5cf38 | 4471 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4472 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4473 | PerlIOBase(f)->flags); |
5e2ab84b | 4474 | #endif |
8229d19f | 4475 | { |
5da08ab0 LT |
4476 | /* If the old top layer is a CRLF layer, reactivate it (if |
4477 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4478 | PerlIO *g = PerlIONext(f); |
7826b36f | 4479 | if (PerlIOValid(g)) { |
8229d19f JH |
4480 | PerlIOl *b = PerlIOBase(g); |
4481 | if (b && b->tab == &PerlIO_crlf) { | |
4482 | if (!(b->flags & PERLIO_F_CRLF)) | |
4483 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4484 | S_inherit_utf8_flag(g); |
8229d19f JH |
4485 | PerlIO_pop(aTHX_ f); |
4486 | return code; | |
7826b36f | 4487 | } |
8229d19f JH |
4488 | } |
4489 | } | |
ff1e3883 | 4490 | S_inherit_utf8_flag(f); |
14a5cf38 | 4491 | return code; |
f5b9d040 NIS |
4492 | } |
4493 | ||
4494 | ||
99efab12 | 4495 | SSize_t |
f62ce20a | 4496 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4497 | { |
dcda55fc | 4498 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4499 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4500 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4501 | c->nl = NULL; |
4502 | } | |
4503 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4504 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4505 | else { |
4506 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4507 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4508 | SSize_t unread = 0; | |
4509 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4510 | PerlIO_flush(f); | |
4511 | if (!b->buf) | |
4512 | PerlIO_get_base(f); | |
4513 | if (b->buf) { | |
4514 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4515 | b->end = b->ptr = b->buf + b->bufsiz; | |
4516 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4517 | b->posn -= b->bufsiz; | |
4518 | } | |
4519 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4520 | const int ch = *--buf; |
14a5cf38 JH |
4521 | if (ch == '\n') { |
4522 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4523 | *--(b->ptr) = NATIVE_0xa; |
4524 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4525 | unread++; |
4526 | count--; | |
4527 | } | |
4528 | else { | |
93c2c2ec | 4529 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4530 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4531 | '\r' */ | |
93c2c2ec IZ |
4532 | unread++; |
4533 | count--; | |
14a5cf38 JH |
4534 | } |
4535 | } | |
4536 | else { | |
4537 | *--(b->ptr) = ch; | |
4538 | unread++; | |
4539 | count--; | |
4540 | } | |
4541 | } | |
4542 | } | |
ec1da995 LT |
4543 | if (count > 0) |
4544 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4545 | return unread; |
4546 | } | |
99efab12 NIS |
4547 | } |
4548 | ||
93c2c2ec | 4549 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4550 | SSize_t |
f62ce20a | 4551 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4552 | { |
dcda55fc | 4553 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4554 | if (!b->buf) |
4555 | PerlIO_get_base(f); | |
4556 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4557 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4558 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4559 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4560 | scan: |
76e6dc3a | 4561 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4562 | nl++; |
76e6dc3a | 4563 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4564 | test: |
4565 | if (nl + 1 < b->end) { | |
76e6dc3a | 4566 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4567 | *nl = '\n'; |
4568 | c->nl = nl; | |
4569 | } | |
4570 | else { | |
4571 | /* | |
71200d45 | 4572 | * Not CR,LF but just CR |
14a5cf38 JH |
4573 | */ |
4574 | nl++; | |
4575 | goto scan; | |
4576 | } | |
4577 | } | |
4578 | else { | |
4579 | /* | |
71200d45 | 4580 | * Blast - found CR as last char in buffer |
14a5cf38 | 4581 | */ |
e87a358a | 4582 | |
14a5cf38 JH |
4583 | if (b->ptr < nl) { |
4584 | /* | |
4585 | * They may not care, defer work as long as | |
71200d45 | 4586 | * possible |
14a5cf38 | 4587 | */ |
a0d1d361 | 4588 | c->nl = nl; |
14a5cf38 JH |
4589 | return (nl - b->ptr); |
4590 | } | |
4591 | else { | |
4592 | int code; | |
22569500 | 4593 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4594 | * flush() is concerned */ |
22569500 | 4595 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4596 | /* Note as we have moved buf up flush's |
4597 | posn += ptr-buf | |
4598 | will naturally make posn point at CR | |
4599 | */ | |
22569500 NIS |
4600 | b->bufsiz--; /* Buffer is thus smaller */ |
4601 | code = PerlIO_fill(f); /* Fetch some more */ | |
4602 | b->bufsiz++; /* Restore size for next time */ | |
4603 | b->buf--; /* Point at space */ | |
4604 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4605 | * off */ |
76e6dc3a | 4606 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4607 | if (code == 0) |
22569500 | 4608 | goto test; /* fill() call worked */ |
14a5cf38 | 4609 | /* |
71200d45 | 4610 | * CR at EOF - just fall through |
14a5cf38 | 4611 | */ |
a0d1d361 | 4612 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4613 | } |
4614 | } | |
4615 | } | |
4616 | } | |
4617 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4618 | } | |
4619 | return 0; | |
99efab12 NIS |
4620 | } |
4621 | ||
4622 | void | |
f62ce20a | 4623 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4624 | { |
dcda55fc AL |
4625 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4626 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4627 | if (!b->buf) |
4628 | PerlIO_get_base(f); | |
4629 | if (!ptr) { | |
a0d1d361 | 4630 | if (c->nl) { |
14a5cf38 | 4631 | ptr = c->nl + 1; |
76e6dc3a | 4632 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4633 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4634 | ptr--; |
4635 | } | |
4636 | } | |
14a5cf38 JH |
4637 | else { |
4638 | ptr = b->end; | |
14a5cf38 JH |
4639 | } |
4640 | ptr -= cnt; | |
4641 | } | |
4642 | else { | |
6f207bd3 | 4643 | NOOP; |
3b4bd3fd | 4644 | #if 0 |
14a5cf38 | 4645 | /* |
71200d45 | 4646 | * Test code - delete when it works ... |
14a5cf38 | 4647 | */ |
3b4bd3fd | 4648 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4649 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4650 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4651 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4652 | chk--; |
22569500 | 4653 | } |
14a5cf38 JH |
4654 | chk -= cnt; |
4655 | ||
a0d1d361 | 4656 | if (ptr != chk ) { |
99ef548b | 4657 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4658 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4659 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4660 | } |
99ef548b | 4661 | #endif |
14a5cf38 JH |
4662 | } |
4663 | if (c->nl) { | |
4664 | if (ptr > c->nl) { | |
4665 | /* | |
71200d45 | 4666 | * They have taken what we lied about |
14a5cf38 | 4667 | */ |
76e6dc3a | 4668 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4669 | c->nl = NULL; |
4670 | ptr++; | |
4671 | } | |
4672 | } | |
4673 | b->ptr = ptr; | |
4674 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4675 | } |
4676 | ||
4677 | SSize_t | |
f62ce20a | 4678 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4679 | { |
14a5cf38 | 4680 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4681 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4682 | else { |
dcda55fc | 4683 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4684 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4685 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4686 | if (!b->buf) |
4687 | PerlIO_get_base(f); | |
4688 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4689 | return 0; | |
4690 | while (buf < ebuf) { | |
dcda55fc | 4691 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4692 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4693 | while (buf < ebuf && b->ptr < eptr) { | |
4694 | if (*buf == '\n') { | |
4695 | if ((b->ptr + 2) > eptr) { | |
4696 | /* | |
71200d45 | 4697 | * Not room for both |
14a5cf38 JH |
4698 | */ |
4699 | PerlIO_flush(f); | |
4700 | break; | |
4701 | } | |
4702 | else { | |
76e6dc3a KW |
4703 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4704 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4705 | buf++; |
4706 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4707 | PerlIO_flush(f); | |
4708 | break; | |
4709 | } | |
4710 | } | |
4711 | } | |
4712 | else { | |
dcda55fc | 4713 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4714 | } |
4715 | if (b->ptr >= eptr) { | |
4716 | PerlIO_flush(f); | |
4717 | break; | |
4718 | } | |
4719 | } | |
4720 | } | |
4721 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4722 | PerlIO_flush(f); | |
4723 | return (buf - (STDCHAR *) vbuf); | |
4724 | } | |
99efab12 NIS |
4725 | } |
4726 | ||
4727 | IV | |
f62ce20a | 4728 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4729 | { |
dcda55fc | 4730 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4731 | if (c->nl) { |
76e6dc3a | 4732 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4733 | c->nl = NULL; |
4734 | } | |
f62ce20a | 4735 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4736 | } |
4737 | ||
86e05cf2 NIS |
4738 | IV |
4739 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4740 | { | |
4741 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4742 | /* In text mode - flush any pending stuff and flip it */ | |
4743 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4744 | #ifndef PERLIO_USING_CRLF | |
4745 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4746 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4747 | #endif |
4748 | } | |
4749 | return 0; | |
4750 | } | |
4751 | ||
27da23d5 | 4752 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4753 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4754 | "crlf", |
4755 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4756 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4757 | PerlIOCrlf_pushed, |
44798d05 | 4758 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4759 | PerlIOBuf_open, |
86e05cf2 | 4760 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4761 | NULL, |
4762 | PerlIOBase_fileno, | |
71200d45 | 4763 | PerlIOBuf_dup, |
de009b76 | 4764 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4765 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4766 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4767 | PerlIOBuf_seek, |
4768 | PerlIOBuf_tell, | |
4769 | PerlIOBuf_close, | |
4770 | PerlIOCrlf_flush, | |
4771 | PerlIOBuf_fill, | |
4772 | PerlIOBase_eof, | |
4773 | PerlIOBase_error, | |
4774 | PerlIOBase_clearerr, | |
4775 | PerlIOBase_setlinebuf, | |
4776 | PerlIOBuf_get_base, | |
4777 | PerlIOBuf_bufsiz, | |
4778 | PerlIOBuf_get_ptr, | |
4779 | PerlIOCrlf_get_cnt, | |
4780 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4781 | }; |
4782 | ||
9e353e3b | 4783 | PerlIO * |
e87a358a | 4784 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4785 | { |
a1ea730d | 4786 | if (!PL_perlio) { |
14a5cf38 JH |
4787 | PerlIO_stdstreams(aTHX); |
4788 | } | |
303f2dc3 | 4789 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4790 | } |
4791 | ||
9e353e3b | 4792 | PerlIO * |
e87a358a | 4793 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4794 | { |
a1ea730d | 4795 | if (!PL_perlio) { |
14a5cf38 JH |
4796 | PerlIO_stdstreams(aTHX); |
4797 | } | |
303f2dc3 | 4798 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4799 | } |
4800 | ||
9e353e3b | 4801 | PerlIO * |
e87a358a | 4802 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4803 | { |
a1ea730d | 4804 | if (!PL_perlio) { |
14a5cf38 JH |
4805 | PerlIO_stdstreams(aTHX); |
4806 | } | |
303f2dc3 | 4807 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4808 | } |
4809 | ||
4810 | /*--------------------------------------------------------------------------------------*/ | |
4811 | ||
9e353e3b NIS |
4812 | char * |
4813 | PerlIO_getname(PerlIO *f, char *buf) | |
4814 | { | |
a15cef0c | 4815 | #ifdef VMS |
dbf7dff6 | 4816 | dTHX; |
73d840c0 | 4817 | char *name = NULL; |
7659f319 | 4818 | bool exported = FALSE; |
14a5cf38 | 4819 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4820 | if (!stdio) { |
4821 | stdio = PerlIO_exportFILE(f,0); | |
4822 | exported = TRUE; | |
4823 | } | |
4824 | if (stdio) { | |
14a5cf38 | 4825 | name = fgetname(stdio, buf); |
7659f319 CB |
4826 | if (exported) PerlIO_releaseFILE(f,stdio); |
4827 | } | |
73d840c0 | 4828 | return name; |
a15cef0c | 4829 | #else |
8772537c AL |
4830 | PERL_UNUSED_ARG(f); |
4831 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4832 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4833 | return NULL; |
a15cef0c | 4834 | #endif |
9e353e3b NIS |
4835 | } |
4836 | ||
4837 | ||
4838 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4839 | /* |
4840 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4841 | * terms of above |
14a5cf38 | 4842 | */ |
9e353e3b | 4843 | |
e87a358a NIS |
4844 | #undef PerlIO_fdopen |
4845 | PerlIO * | |
4846 | PerlIO_fdopen(int fd, const char *mode) | |
4847 | { | |
4848 | dTHX; | |
bd61b366 | 4849 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4850 | } |
4851 | ||
4852 | #undef PerlIO_open | |
4853 | PerlIO * | |
4854 | PerlIO_open(const char *path, const char *mode) | |
4855 | { | |
4856 | dTHX; | |
42d9b98d | 4857 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4858 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4859 | } |
4860 | ||
4861 | #undef Perlio_reopen | |
4862 | PerlIO * | |
4863 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4864 | { | |
4865 | dTHX; | |
42d9b98d | 4866 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4867 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4868 | } |
4869 | ||
9e353e3b | 4870 | #undef PerlIO_getc |
6f9d8c32 | 4871 | int |
9e353e3b | 4872 | PerlIO_getc(PerlIO *f) |
760ac839 | 4873 | { |
e87a358a | 4874 | dTHX; |
14a5cf38 | 4875 | STDCHAR buf[1]; |
de009b76 | 4876 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4877 | return (unsigned char) buf[0]; |
4878 | } | |
4879 | return EOF; | |
313ca112 NIS |
4880 | } |
4881 | ||
4882 | #undef PerlIO_ungetc | |
4883 | int | |
4884 | PerlIO_ungetc(PerlIO *f, int ch) | |
4885 | { | |
e87a358a | 4886 | dTHX; |
14a5cf38 JH |
4887 | if (ch != EOF) { |
4888 | STDCHAR buf = ch; | |
4889 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4890 | return ch; | |
4891 | } | |
4892 | return EOF; | |
760ac839 LW |
4893 | } |
4894 | ||
9e353e3b NIS |
4895 | #undef PerlIO_putc |
4896 | int | |
4897 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4898 | { |
e87a358a | 4899 | dTHX; |
14a5cf38 JH |
4900 | STDCHAR buf = ch; |
4901 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4902 | } |
4903 | ||
9e353e3b | 4904 | #undef PerlIO_puts |
760ac839 | 4905 | int |
9e353e3b | 4906 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4907 | { |
e87a358a | 4908 | dTHX; |
dcda55fc | 4909 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4910 | } |
4911 | ||
4912 | #undef PerlIO_rewind | |
4913 | void | |
c78749f2 | 4914 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4915 | { |
e87a358a | 4916 | dTHX; |
14a5cf38 JH |
4917 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4918 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4919 | } |
4920 | ||
4921 | #undef PerlIO_vprintf | |
4922 | int | |
4923 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4924 | { | |
14a5cf38 | 4925 | dTHX; |
53ce71d3 | 4926 | SV * sv; |
b83604b4 | 4927 | const char *s; |
14a5cf38 JH |
4928 | STRLEN len; |
4929 | SSize_t wrote; | |
2cc61e15 | 4930 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4931 | va_list apc; |
4932 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4933 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 4934 | va_end(apc); |
2cc61e15 | 4935 | #else |
53ce71d3 | 4936 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4937 | #endif |
b83604b4 | 4938 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4939 | wrote = PerlIO_write(f, s, len); |
4940 | SvREFCNT_dec(sv); | |
4941 | return wrote; | |
760ac839 LW |
4942 | } |
4943 | ||
4944 | #undef PerlIO_printf | |
6f9d8c32 | 4945 | int |
14a5cf38 | 4946 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4947 | { |
14a5cf38 JH |
4948 | va_list ap; |
4949 | int result; | |
4950 | va_start(ap, fmt); | |
4951 | result = PerlIO_vprintf(f, fmt, ap); | |
4952 | va_end(ap); | |
4953 | return result; | |
760ac839 LW |
4954 | } |
4955 | ||
4956 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4957 | int |
14a5cf38 | 4958 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4959 | { |
e87a358a | 4960 | dTHX; |
14a5cf38 JH |
4961 | va_list ap; |
4962 | int result; | |
4963 | va_start(ap, fmt); | |
4964 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
4965 | va_end(ap); | |
4966 | return result; | |
760ac839 LW |
4967 | } |
4968 | ||
4969 | #undef PerlIO_tmpfile | |
4970 | PerlIO * | |
c78749f2 | 4971 | PerlIO_tmpfile(void) |
760ac839 | 4972 | { |
dbf7dff6 | 4973 | #ifndef WIN32 |
2941a2e1 | 4974 | dTHX; |
dbf7dff6 | 4975 | #endif |
2941a2e1 | 4976 | PerlIO *f = NULL; |
2941a2e1 | 4977 | #ifdef WIN32 |
de009b76 | 4978 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
4979 | if (fd >= 0) |
4980 | f = PerlIO_fdopen(fd, "w+b"); | |
4981 | #else /* WIN32 */ | |
460c8493 | 4982 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
4983 | int fd = -1; |
4984 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 4985 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 4986 | SV * sv = NULL; |
60f7fc1e | 4987 | int old_umask = umask(0600); |
2941a2e1 JH |
4988 | /* |
4989 | * I have no idea how portable mkstemp() is ... NI-S | |
4990 | */ | |
7299ca58 | 4991 | if (tmpdir && *tmpdir) { |
0b99e986 | 4992 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 4993 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
4994 | sv_catpv(sv, tempname + 4); |
4995 | fd = mkstemp(SvPVX(sv)); | |
4996 | } | |
4997 | if (fd < 0) { | |
e40f8e80 | 4998 | SvREFCNT_dec(sv); |
7299ca58 | 4999 | sv = NULL; |
0b99e986 RGS |
5000 | /* else we try /tmp */ |
5001 | fd = mkstemp(tempname); | |
5002 | } | |
b7561fc9 BF |
5003 | if (fd < 0) { |
5004 | /* Try cwd */ | |
5005 | sv = newSVpvs("."); | |
5006 | sv_catpv(sv, tempname + 4); | |
5007 | fd = mkstemp(SvPVX(sv)); | |
5008 | } | |
60f7fc1e | 5009 | umask(old_umask); |
2941a2e1 JH |
5010 | if (fd >= 0) { |
5011 | f = PerlIO_fdopen(fd, "w+"); | |
5012 | if (f) | |
5013 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5014 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5015 | } |
ef8d46e8 | 5016 | SvREFCNT_dec(sv); |
2941a2e1 | 5017 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5018 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5019 | |
085e731f CB |
5020 | if (stdio) |
5021 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5022 | ||
2941a2e1 JH |
5023 | # endif /* else HAS_MKSTEMP */ |
5024 | #endif /* else WIN32 */ | |
5025 | return f; | |
760ac839 LW |
5026 | } |
5027 | ||
6f9d8c32 NIS |
5028 | #undef HAS_FSETPOS |
5029 | #undef HAS_FGETPOS | |
5030 | ||
22569500 | 5031 | #endif /* PERLIO_IS_STDIO */ |
760ac839 | 5032 | |
9e353e3b | 5033 | /*======================================================================================*/ |
14a5cf38 | 5034 | /* |
71200d45 NIS |
5035 | * Now some functions in terms of above which may be needed even if we are |
5036 | * not in true PerlIO mode | |
9e353e3b | 5037 | */ |
188f0c84 YO |
5038 | const char * |
5039 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5040 | { | |
8b850bd5 NC |
5041 | const char *direction = NULL; |
5042 | SV *layers; | |
188f0c84 YO |
5043 | /* |
5044 | * Need to supply default layer info from open.pm | |
5045 | */ | |
8b850bd5 NC |
5046 | |
5047 | if (!PL_curcop) | |
5048 | return NULL; | |
5049 | ||
5050 | if (mode && mode[0] != 'r') { | |
5051 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5052 | direction = "open>"; | |
5053 | } else { | |
5054 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5055 | direction = "open<"; | |
188f0c84 | 5056 | } |
8b850bd5 NC |
5057 | if (!direction) |
5058 | return NULL; | |
5059 | ||
20439bc7 | 5060 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5061 | |
5062 | assert(layers); | |
5063 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5064 | } |
5065 | ||
9e353e3b | 5066 | |
760ac839 LW |
5067 | #ifndef HAS_FSETPOS |
5068 | #undef PerlIO_setpos | |
5069 | int | |
766a733e | 5070 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5071 | { |
14a5cf38 JH |
5072 | if (SvOK(pos)) { |
5073 | STRLEN len; | |
2bcd6579 | 5074 | dTHX; |
c4420975 | 5075 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5076 | if (f && len == sizeof(Off_t)) |
5077 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5078 | } | |
93189314 | 5079 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5080 | return -1; |
760ac839 | 5081 | } |
c411622e | 5082 | #else |
c411622e | 5083 | #undef PerlIO_setpos |
5084 | int | |
766a733e | 5085 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5086 | { |
14a5cf38 JH |
5087 | dTHX; |
5088 | if (SvOK(pos)) { | |
5089 | STRLEN len; | |
c4420975 | 5090 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5091 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5092 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5093 | return fsetpos64(f, fpos); |
d9b3e12d | 5094 | #else |
14a5cf38 | 5095 | return fsetpos(f, fpos); |
d9b3e12d | 5096 | #endif |
14a5cf38 | 5097 | } |
766a733e | 5098 | } |
93189314 | 5099 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5100 | return -1; |
c411622e | 5101 | } |
5102 | #endif | |
760ac839 LW |
5103 | |
5104 | #ifndef HAS_FGETPOS | |
5105 | #undef PerlIO_getpos | |
5106 | int | |
766a733e | 5107 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5108 | { |
14a5cf38 JH |
5109 | dTHX; |
5110 | Off_t posn = PerlIO_tell(f); | |
5111 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5112 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5113 | } |
c411622e | 5114 | #else |
c411622e | 5115 | #undef PerlIO_getpos |
5116 | int | |
766a733e | 5117 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5118 | { |
14a5cf38 JH |
5119 | dTHX; |
5120 | Fpos_t fpos; | |
5121 | int code; | |
2d4389e4 | 5122 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5123 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5124 | #else |
14a5cf38 | 5125 | code = fgetpos(f, &fpos); |
d9b3e12d | 5126 | #endif |
14a5cf38 JH |
5127 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5128 | return code; | |
c411622e | 5129 | } |
5130 | #endif | |
760ac839 | 5131 | |
97cb92d6 | 5132 | #if !defined(HAS_VPRINTF) |
760ac839 LW |
5133 | |
5134 | int | |
c78749f2 | 5135 | vprintf(char *pat, char *args) |
662a7e3f CS |
5136 | { |
5137 | _doprnt(pat, args, stdout); | |
22569500 | 5138 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5139 | * value */ |
662a7e3f CS |
5140 | } |
5141 | ||
5142 | int | |
c78749f2 | 5143 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5144 | { |
5145 | _doprnt(pat, args, fd); | |
22569500 | 5146 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5147 | * value */ |
760ac839 LW |
5148 | } |
5149 | ||
5150 | #endif | |
5151 | ||
9cfa90c0 NC |
5152 | /* |
5153 | * Local variables: | |
5154 | * c-indentation-style: bsd | |
5155 | * c-basic-offset: 4 | |
14d04a33 | 5156 | * indent-tabs-mode: nil |
9cfa90c0 NC |
5157 | * End: |
5158 | * | |
14d04a33 | 5159 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5160 | */ |