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 | } | |
202 | if (rawmode & O_BINARY) | |
203 | mode[ix++] = 'b'; | |
204 | mode[ix] = '\0'; | |
205 | return ptype; | |
206 | } | |
207 | ||
eb73beca NIS |
208 | #ifndef PERLIO_LAYERS |
209 | int | |
210 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
211 | { | |
6874a2de NIS |
212 | if (!names || !*names |
213 | || strEQ(names, ":crlf") | |
214 | || strEQ(names, ":raw") | |
215 | || strEQ(names, ":bytes") | |
216 | ) { | |
14a5cf38 JH |
217 | return 0; |
218 | } | |
219 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
220 | /* | |
71200d45 | 221 | * NOTREACHED |
14a5cf38 JH |
222 | */ |
223 | return -1; | |
eb73beca NIS |
224 | } |
225 | ||
13621cfb NIS |
226 | void |
227 | PerlIO_destruct(pTHX) | |
228 | { | |
229 | } | |
230 | ||
f5b9d040 NIS |
231 | int |
232 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
233 | { | |
14a5cf38 | 234 | return perlsio_binmode(fp, iotype, mode); |
f5b9d040 | 235 | } |
60382766 | 236 | |
e0fa5af2 | 237 | PerlIO * |
ecdeb87c | 238 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 239 | { |
a0fd4948 | 240 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
241 | return NULL; |
242 | #else | |
243 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 244 | return PerlSIO_fdupopen(f); |
0553478e | 245 | #else |
30753f56 NIS |
246 | #ifdef WIN32 |
247 | return win32_fdupopen(f); | |
248 | #else | |
e0fa5af2 | 249 | if (f) { |
504618e9 | 250 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 251 | if (fd >= 0) { |
06c7082d | 252 | char mode[8]; |
a5936e02 | 253 | #ifdef DJGPP |
dcda55fc AL |
254 | const int omode = djgpp_get_stream_mode(f); |
255 | #else | |
256 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 257 | #endif |
06c7082d | 258 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 259 | /* the r+ is a hack */ |
06c7082d | 260 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
261 | } |
262 | return NULL; | |
263 | } | |
264 | else { | |
93189314 | 265 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 266 | } |
7114a2d2 | 267 | #endif |
e0fa5af2 | 268 | return NULL; |
0553478e | 269 | #endif |
30753f56 | 270 | #endif |
e0fa5af2 NIS |
271 | } |
272 | ||
273 | ||
14a5cf38 | 274 | /* |
71200d45 | 275 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 276 | */ |
ee518936 NIS |
277 | |
278 | PerlIO * | |
14a5cf38 JH |
279 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
280 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
281 | { | |
7cf31beb NIS |
282 | if (narg) { |
283 | if (narg > 1) { | |
3b8752bb | 284 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 285 | } |
14a5cf38 JH |
286 | if (*args == &PL_sv_undef) |
287 | return PerlIO_tmpfile(); | |
288 | else { | |
41188aa0 | 289 | STRLEN len; |
74622586 | 290 | const char *name = SvPV_const(*args, len); |
41188aa0 | 291 | if (!IS_SAFE_PATHNAME(name, len, "open")) |
c8028aa6 TC |
292 | return NULL; |
293 | ||
3b6c1aba | 294 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
295 | fd = PerlLIO_open3(name, imode, perm); |
296 | if (fd >= 0) | |
de009b76 | 297 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
298 | } |
299 | else if (old) { | |
300 | return PerlIO_reopen(name, mode, old); | |
301 | } | |
302 | else { | |
303 | return PerlIO_open(name, mode); | |
304 | } | |
305 | } | |
306 | } | |
307 | else { | |
308 | return PerlIO_fdopen(fd, (char *) mode); | |
309 | } | |
310 | return NULL; | |
ee518936 NIS |
311 | } |
312 | ||
15eb3045 | 313 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
0c4f7ff0 NIS |
314 | XS(XS_PerlIO__Layer__find) |
315 | { | |
14a5cf38 JH |
316 | dXSARGS; |
317 | if (items < 2) | |
318 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
319 | else { | |
dcda55fc | 320 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
321 | ST(0) = (strEQ(name, "crlf") |
322 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
323 | XSRETURN(1); | |
324 | } | |
0c4f7ff0 NIS |
325 | } |
326 | ||
327 | ||
328 | void | |
329 | Perl_boot_core_PerlIO(pTHX) | |
330 | { | |
14a5cf38 | 331 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
332 | } |
333 | ||
ac27b0f5 NIS |
334 | #endif |
335 | ||
32e30700 | 336 | |
6f9d8c32 | 337 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
338 | |
339 | void | |
e8632036 | 340 | PerlIO_init(pTHX) |
760ac839 | 341 | { |
96a5add6 | 342 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
343 | /* |
344 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 345 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 346 | * that may be required by loadable extensions e.g. for |
71200d45 | 347 | * FileHandle::tmpfile |
14a5cf38 | 348 | */ |
760ac839 LW |
349 | } |
350 | ||
33dcbb9a | 351 | #undef PerlIO_tmpfile |
352 | PerlIO * | |
8ac85365 | 353 | PerlIO_tmpfile(void) |
33dcbb9a | 354 | { |
14a5cf38 | 355 | return tmpfile(); |
33dcbb9a | 356 | } |
357 | ||
22569500 | 358 | #else /* PERLIO_IS_STDIO */ |
760ac839 | 359 | |
6f9d8c32 | 360 | /*======================================================================================*/ |
14a5cf38 | 361 | /* |
71200d45 | 362 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 363 | */ |
760ac839 | 364 | |
76ced9ad NIS |
365 | #include "perliol.h" |
366 | ||
6f9d8c32 | 367 | void |
14a5cf38 JH |
368 | PerlIO_debug(const char *fmt, ...) |
369 | { | |
14a5cf38 JH |
370 | va_list ap; |
371 | dSYS; | |
372 | va_start(ap, fmt); | |
582588d2 | 373 | if (!PL_perlio_debug_fd) { |
284167a5 | 374 | if (!TAINTING_get && |
985213f2 AB |
375 | PerlProc_getuid() == PerlProc_geteuid() && |
376 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
377 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
378 | if (s && *s) | |
379 | PL_perlio_debug_fd | |
380 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
381 | else | |
382 | PL_perlio_debug_fd = -1; | |
383 | } else { | |
384 | /* tainting or set*id, so ignore the environment, and ensure we | |
385 | skip these tests next time through. */ | |
27da23d5 | 386 | PL_perlio_debug_fd = -1; |
582588d2 | 387 | } |
14a5cf38 | 388 | } |
27da23d5 | 389 | if (PL_perlio_debug_fd > 0) { |
04783dc7 | 390 | int rc = 0; |
70ace5da | 391 | #ifdef USE_ITHREADS |
dcda55fc | 392 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
393 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
394 | char buffer[1024]; | |
1208b3dd JH |
395 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
396 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
04783dc7 | 397 | rc = PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); |
70ace5da | 398 | #else |
dcda55fc AL |
399 | const char *s = CopFILE(PL_curcop); |
400 | STRLEN len; | |
550e2ce0 NC |
401 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
402 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
403 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
404 | ||
b83604b4 | 405 | s = SvPV_const(sv, len); |
04783dc7 | 406 | rc = PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 407 | SvREFCNT_dec(sv); |
70ace5da | 408 | #endif |
04783dc7 DM |
409 | /* silently ignore failures */ |
410 | PERL_UNUSED_VAR(rc); | |
14a5cf38 JH |
411 | } |
412 | va_end(ap); | |
6f9d8c32 NIS |
413 | } |
414 | ||
9e353e3b NIS |
415 | /*--------------------------------------------------------------------------------------*/ |
416 | ||
14a5cf38 | 417 | /* |
71200d45 | 418 | * Inner level routines |
14a5cf38 | 419 | */ |
9e353e3b | 420 | |
16865ff7 DM |
421 | /* check that the head field of each layer points back to the head */ |
422 | ||
423 | #ifdef DEBUGGING | |
424 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
425 | static void | |
426 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
427 | { | |
428 | PerlIOl *head, *p; | |
429 | int seen = 0; | |
430 | if (!PerlIOValid(f)) | |
431 | return; | |
432 | p = head = PerlIOBase(f)->head; | |
433 | assert(p); | |
434 | do { | |
435 | assert(p->head == head); | |
436 | if (p == (PerlIOl*)f) | |
437 | seen = 1; | |
438 | p = p->next; | |
439 | } while (p); | |
440 | assert(seen); | |
441 | } | |
442 | #else | |
443 | # define VERIFY_HEAD(f) | |
444 | #endif | |
445 | ||
446 | ||
14a5cf38 | 447 | /* |
71200d45 | 448 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 449 | */ |
05d1247b | 450 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 451 | |
8995e67d DM |
452 | static void |
453 | PerlIO_init_table(pTHX) | |
454 | { | |
455 | if (PL_perlio) | |
456 | return; | |
457 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
458 | } | |
459 | ||
460 | ||
461 | ||
760ac839 | 462 | PerlIO * |
5f1a76d0 | 463 | PerlIO_allocate(pTHX) |
6f9d8c32 | 464 | { |
97aff369 | 465 | dVAR; |
14a5cf38 | 466 | /* |
71200d45 | 467 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 468 | */ |
303f2dc3 DM |
469 | PerlIOl **last; |
470 | PerlIOl *f; | |
a1ea730d | 471 | last = &PL_perlio; |
14a5cf38 JH |
472 | while ((f = *last)) { |
473 | int i; | |
303f2dc3 | 474 | last = (PerlIOl **) (f); |
14a5cf38 | 475 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 476 | if (!((++f)->next)) { |
abf9167d | 477 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 478 | f->tab = NULL; |
16865ff7 | 479 | f->head = f; |
303f2dc3 | 480 | return (PerlIO *)f; |
14a5cf38 JH |
481 | } |
482 | } | |
483 | } | |
303f2dc3 | 484 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
485 | if (!f) { |
486 | return NULL; | |
487 | } | |
303f2dc3 | 488 | *last = (PerlIOl*) f++; |
abf9167d | 489 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 490 | f->tab = NULL; |
16865ff7 | 491 | f->head = f; |
303f2dc3 | 492 | return (PerlIO*) f; |
05d1247b NIS |
493 | } |
494 | ||
a1ea730d NIS |
495 | #undef PerlIO_fdupopen |
496 | PerlIO * | |
ecdeb87c | 497 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 498 | { |
04892f78 | 499 | if (PerlIOValid(f)) { |
de009b76 | 500 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 501 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
502 | if (tab && tab->Dup) |
503 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
504 | else { |
505 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
506 | } | |
a1ea730d | 507 | } |
210e727c JH |
508 | else |
509 | SETERRNO(EBADF, SS_IVCHAN); | |
510 | ||
511 | return NULL; | |
a1ea730d NIS |
512 | } |
513 | ||
514 | void | |
303f2dc3 | 515 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 516 | { |
303f2dc3 | 517 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
518 | if (table) { |
519 | int i; | |
303f2dc3 | 520 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 521 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
522 | PerlIOl * const f = table + i; |
523 | if (f->next) { | |
524 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
525 | } |
526 | } | |
3a1ee7e8 | 527 | Safefree(table); |
14a5cf38 | 528 | *tablep = NULL; |
05d1247b | 529 | } |
05d1247b NIS |
530 | } |
531 | ||
fcf2db38 NIS |
532 | |
533 | PerlIO_list_t * | |
3a1ee7e8 | 534 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 535 | { |
14a5cf38 | 536 | PerlIO_list_t *list; |
96a5add6 | 537 | PERL_UNUSED_CONTEXT; |
a02a5408 | 538 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
539 | list->refcnt = 1; |
540 | return list; | |
fcf2db38 NIS |
541 | } |
542 | ||
543 | void | |
3a1ee7e8 | 544 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 545 | { |
14a5cf38 JH |
546 | if (list) { |
547 | if (--list->refcnt == 0) { | |
548 | if (list->array) { | |
14a5cf38 | 549 | IV i; |
ef8d46e8 VP |
550 | for (i = 0; i < list->cur; i++) |
551 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
552 | Safefree(list->array); |
553 | } | |
554 | Safefree(list); | |
555 | } | |
556 | } | |
fcf2db38 NIS |
557 | } |
558 | ||
559 | void | |
3a1ee7e8 | 560 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 561 | { |
97aff369 | 562 | dVAR; |
334e202e | 563 | PerlIO_pair_t *p; |
b37c2d43 AL |
564 | PERL_UNUSED_CONTEXT; |
565 | ||
14a5cf38 JH |
566 | if (list->cur >= list->len) { |
567 | list->len += 8; | |
568 | if (list->array) | |
569 | Renew(list->array, list->len, PerlIO_pair_t); | |
570 | else | |
a02a5408 | 571 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
572 | } |
573 | p = &(list->array[list->cur++]); | |
574 | p->funcs = funcs; | |
575 | if ((p->arg = arg)) { | |
f84c484e | 576 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 577 | } |
fcf2db38 NIS |
578 | } |
579 | ||
3a1ee7e8 NIS |
580 | PerlIO_list_t * |
581 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
582 | { | |
b37c2d43 | 583 | PerlIO_list_t *list = NULL; |
694c95cf JH |
584 | if (proto) { |
585 | int i; | |
586 | list = PerlIO_list_alloc(aTHX); | |
587 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 588 | SV *arg = proto->array[i].arg; |
24d147a6 | 589 | #ifdef USE_ITHREADS |
a951d81d BL |
590 | if (arg && param) |
591 | arg = sv_dup(arg, param); | |
592 | #else | |
593 | PERL_UNUSED_ARG(param); | |
594 | #endif | |
694c95cf JH |
595 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
596 | } | |
3a1ee7e8 NIS |
597 | } |
598 | return list; | |
599 | } | |
4a4a6116 | 600 | |
05d1247b | 601 | void |
3a1ee7e8 | 602 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 603 | { |
3aaf42a7 | 604 | #ifdef USE_ITHREADS |
303f2dc3 DM |
605 | PerlIOl **table = &proto->Iperlio; |
606 | PerlIOl *f; | |
3a1ee7e8 NIS |
607 | PL_perlio = NULL; |
608 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
609 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 610 | PerlIO_init_table(aTHX); |
a25429c6 | 611 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
612 | while ((f = *table)) { |
613 | int i; | |
303f2dc3 | 614 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 615 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
616 | if (f->next) { |
617 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
618 | } |
619 | f++; | |
620 | } | |
621 | } | |
1b6737cc | 622 | #else |
a25429c6 | 623 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
624 | PERL_UNUSED_ARG(proto); |
625 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 626 | #endif |
9a6404c5 DM |
627 | } |
628 | ||
629 | void | |
13621cfb NIS |
630 | PerlIO_destruct(pTHX) |
631 | { | |
97aff369 | 632 | dVAR; |
303f2dc3 DM |
633 | PerlIOl **table = &PL_perlio; |
634 | PerlIOl *f; | |
694c95cf | 635 | #ifdef USE_ITHREADS |
a25429c6 | 636 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 637 | #endif |
14a5cf38 JH |
638 | while ((f = *table)) { |
639 | int i; | |
303f2dc3 | 640 | table = (PerlIOl **) (f++); |
14a5cf38 | 641 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 642 | PerlIO *x = &(f->next); |
dcda55fc | 643 | const PerlIOl *l; |
14a5cf38 | 644 | while ((l = *x)) { |
cc6623a8 | 645 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
646 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
647 | PerlIO_flush(x); | |
648 | PerlIO_pop(aTHX_ x); | |
649 | } | |
650 | else { | |
651 | x = PerlIONext(x); | |
652 | } | |
653 | } | |
654 | f++; | |
655 | } | |
656 | } | |
13621cfb NIS |
657 | } |
658 | ||
659 | void | |
a999f61b | 660 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 661 | { |
dcda55fc | 662 | const PerlIOl *l = *f; |
16865ff7 | 663 | VERIFY_HEAD(f); |
14a5cf38 | 664 | if (l) { |
cc6623a8 DM |
665 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
666 | l->tab ? l->tab->name : "(Null)"); | |
667 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
668 | /* |
669 | * If popped returns non-zero do not free its layer structure | |
670 | * it has either done so itself, or it is shared and still in | |
71200d45 | 671 | * use |
14a5cf38 | 672 | */ |
f62ce20a | 673 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
674 | return; |
675 | } | |
abf9167d DM |
676 | if (PerlIO_lockcnt(f)) { |
677 | /* we're in use; defer freeing the structure */ | |
678 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
679 | PerlIOBase(f)->tab = NULL; | |
680 | } | |
681 | else { | |
682 | *f = l->next; | |
683 | Safefree(l); | |
684 | } | |
685 | ||
a8c08ecd | 686 | } |
6f9d8c32 NIS |
687 | } |
688 | ||
39f7a870 JH |
689 | /* Return as an array the stack of layers on a filehandle. Note that |
690 | * the stack is returned top-first in the array, and there are three | |
691 | * times as many array elements as there are layers in the stack: the | |
692 | * first element of a layer triplet is the name, the second one is the | |
693 | * arguments, and the third one is the flags. */ | |
694 | ||
695 | AV * | |
696 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
697 | { | |
97aff369 | 698 | dVAR; |
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 | { |
27da23d5 | 732 | dVAR; |
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 | */ | |
97aff369 | 869 | dVAR; |
c9bca74a | 870 | dXSARGS; |
58c0efa5 | 871 | PERL_UNUSED_ARG(cv); |
c9bca74a | 872 | if (items) |
e62f0680 | 873 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
874 | XSRETURN(0); |
875 | } | |
876 | ||
15eb3045 | 877 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 878 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 879 | { |
97aff369 | 880 | dVAR; |
14a5cf38 | 881 | dXSARGS; |
58c0efa5 | 882 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
883 | if (items < 2) |
884 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
885 | else { | |
de009b76 | 886 | STRLEN len; |
46c461b5 | 887 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 888 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 889 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
890 | ST(0) = |
891 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
892 | &PL_sv_undef; | |
893 | XSRETURN(1); | |
894 | } | |
0c4f7ff0 NIS |
895 | } |
896 | ||
e3f3bf95 NIS |
897 | void |
898 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
899 | { | |
97aff369 | 900 | dVAR; |
3a1ee7e8 NIS |
901 | if (!PL_known_layers) |
902 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 903 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 904 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
905 | } |
906 | ||
1141d9f8 | 907 | int |
fcf2db38 | 908 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 909 | { |
97aff369 | 910 | dVAR; |
14a5cf38 JH |
911 | if (names) { |
912 | const char *s = names; | |
913 | while (*s) { | |
914 | while (isSPACE(*s) || *s == ':') | |
915 | s++; | |
916 | if (*s) { | |
917 | STRLEN llen = 0; | |
918 | const char *e = s; | |
bd61b366 | 919 | const char *as = NULL; |
14a5cf38 JH |
920 | STRLEN alen = 0; |
921 | if (!isIDFIRST(*s)) { | |
922 | /* | |
923 | * Message is consistent with how attribute lists are | |
924 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 925 | * seen as an invalid separator character. |
14a5cf38 | 926 | */ |
de009b76 | 927 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
928 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
929 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
930 | q, *s, q, s); | |
93189314 | 931 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
932 | return -1; |
933 | } | |
934 | do { | |
935 | e++; | |
0eb30aeb | 936 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
937 | llen = e - s; |
938 | if (*e == '(') { | |
939 | int nesting = 1; | |
940 | as = ++e; | |
941 | while (nesting) { | |
942 | switch (*e++) { | |
943 | case ')': | |
944 | if (--nesting == 0) | |
945 | alen = (e - 1) - as; | |
946 | break; | |
947 | case '(': | |
948 | ++nesting; | |
949 | break; | |
950 | case '\\': | |
951 | /* | |
952 | * It's a nul terminated string, not allowed | |
953 | * to \ the terminating null. Anything other | |
71200d45 | 954 | * character is passed over. |
14a5cf38 JH |
955 | */ |
956 | if (*e++) { | |
957 | break; | |
958 | } | |
959 | /* | |
71200d45 | 960 | * Drop through |
14a5cf38 JH |
961 | */ |
962 | case '\0': | |
963 | e--; | |
a2a5de95 NC |
964 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
965 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
966 | (int) (e - s), s); | |
14a5cf38 JH |
967 | return -1; |
968 | default: | |
969 | /* | |
71200d45 | 970 | * boring. |
14a5cf38 JH |
971 | */ |
972 | break; | |
973 | } | |
974 | } | |
975 | } | |
976 | if (e > s) { | |
46c461b5 | 977 | PerlIO_funcs * const layer = |
14a5cf38 JH |
978 | PerlIO_find_layer(aTHX_ s, llen, 1); |
979 | if (layer) { | |
a951d81d BL |
980 | SV *arg = NULL; |
981 | if (as) | |
982 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 983 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 984 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 985 | SvREFCNT_dec(arg); |
14a5cf38 JH |
986 | } |
987 | else { | |
a2a5de95 NC |
988 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
989 | (int) llen, s); | |
14a5cf38 JH |
990 | return -1; |
991 | } | |
992 | } | |
993 | s = e; | |
994 | } | |
995 | } | |
996 | } | |
997 | return 0; | |
1141d9f8 NIS |
998 | } |
999 | ||
dfebf958 | 1000 | void |
fcf2db38 | 1001 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1002 | { |
97aff369 | 1003 | dVAR; |
27da23d5 | 1004 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1005 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1006 | tab = &PerlIO_crlf; |
846be114 | 1007 | #else |
6ce75a77 | 1008 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1009 | tab = &PerlIO_stdio; |
846be114 | 1010 | #endif |
14a5cf38 | 1011 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1012 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1013 | &PL_sv_undef); |
dfebf958 NIS |
1014 | } |
1015 | ||
e3f3bf95 | 1016 | SV * |
14a5cf38 | 1017 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1018 | { |
14a5cf38 | 1019 | return av->array[n].arg; |
e3f3bf95 NIS |
1020 | } |
1021 | ||
f3862f8b | 1022 | PerlIO_funcs * |
14a5cf38 | 1023 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1024 | { |
14a5cf38 JH |
1025 | if (n >= 0 && n < av->cur) { |
1026 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1027 | av->array[n].funcs->name); | |
1028 | return av->array[n].funcs; | |
1029 | } | |
1030 | if (!def) | |
1031 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1032 | return def; | |
e3f3bf95 NIS |
1033 | } |
1034 | ||
4ec2216f NIS |
1035 | IV |
1036 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1037 | { | |
8772537c AL |
1038 | PERL_UNUSED_ARG(mode); |
1039 | PERL_UNUSED_ARG(arg); | |
1040 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1041 | if (PerlIOValid(f)) { |
1042 | PerlIO_flush(f); | |
1043 | PerlIO_pop(aTHX_ f); | |
1044 | return 0; | |
1045 | } | |
1046 | return -1; | |
1047 | } | |
1048 | ||
27da23d5 | 1049 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1050 | sizeof(PerlIO_funcs), |
1051 | "pop", | |
1052 | 0, | |
1053 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1054 | PerlIOPop_pushed, | |
1055 | NULL, | |
c0888ace | 1056 | PerlIOBase_open, |
4ec2216f NIS |
1057 | NULL, |
1058 | NULL, | |
1059 | NULL, | |
1060 | NULL, | |
1061 | NULL, | |
1062 | NULL, | |
1063 | NULL, | |
1064 | NULL, | |
de009b76 AL |
1065 | NULL, |
1066 | NULL, | |
4ec2216f NIS |
1067 | NULL, /* flush */ |
1068 | NULL, /* fill */ | |
1069 | NULL, | |
1070 | NULL, | |
1071 | NULL, | |
1072 | NULL, | |
1073 | NULL, /* get_base */ | |
1074 | NULL, /* get_bufsiz */ | |
1075 | NULL, /* get_ptr */ | |
1076 | NULL, /* get_cnt */ | |
1077 | NULL, /* set_ptrcnt */ | |
1078 | }; | |
1079 | ||
fcf2db38 | 1080 | PerlIO_list_t * |
e3f3bf95 NIS |
1081 | PerlIO_default_layers(pTHX) |
1082 | { | |
97aff369 | 1083 | dVAR; |
3a1ee7e8 | 1084 | if (!PL_def_layerlist) { |
284167a5 | 1085 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1086 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1087 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1088 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1089 | #if defined(WIN32) |
27da23d5 | 1090 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1091 | #if 0 |
14a5cf38 | 1092 | osLayer = &PerlIO_win32; |
0c4128ad | 1093 | #endif |
2f8118af | 1094 | #endif |
27da23d5 JH |
1095 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1096 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1097 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1098 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1099 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1100 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1101 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1102 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1103 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1104 | &PL_sv_undef); | |
1105 | if (s) { | |
3a1ee7e8 | 1106 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1107 | } |
1108 | else { | |
3a1ee7e8 | 1109 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1110 | } |
1141d9f8 | 1111 | } |
3a1ee7e8 NIS |
1112 | if (PL_def_layerlist->cur < 2) { |
1113 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1114 | } |
3a1ee7e8 | 1115 | return PL_def_layerlist; |
e3f3bf95 NIS |
1116 | } |
1117 | ||
0c4f7ff0 NIS |
1118 | void |
1119 | Perl_boot_core_PerlIO(pTHX) | |
1120 | { | |
1121 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1122 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1123 | __FILE__); | |
0c4f7ff0 | 1124 | #endif |
14a5cf38 | 1125 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1126 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1127 | } |
e3f3bf95 NIS |
1128 | |
1129 | PerlIO_funcs * | |
1130 | PerlIO_default_layer(pTHX_ I32 n) | |
1131 | { | |
97aff369 | 1132 | dVAR; |
46c461b5 | 1133 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1134 | if (n < 0) |
1135 | n += av->cur; | |
27da23d5 | 1136 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1137 | } |
1138 | ||
a999f61b NIS |
1139 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1140 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1141 | |
1142 | void | |
1141d9f8 | 1143 | PerlIO_stdstreams(pTHX) |
60382766 | 1144 | { |
97aff369 | 1145 | dVAR; |
a1ea730d | 1146 | if (!PL_perlio) { |
8995e67d | 1147 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1148 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1149 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1150 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1151 | } | |
60382766 NIS |
1152 | } |
1153 | ||
1154 | PerlIO * | |
27da23d5 | 1155 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1156 | { |
16865ff7 | 1157 | VERIFY_HEAD(f); |
2dc2558e | 1158 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1159 | Perl_croak( aTHX_ |
5cf96513 RB |
1160 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1161 | "PerlIO layer function table size", (UV)tab->fsize, | |
1162 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1163 | } |
1164 | if (tab->size) { | |
b464bac0 | 1165 | PerlIOl *l; |
2dc2558e | 1166 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1167 | Perl_croak( aTHX_ |
5cf96513 RB |
1168 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1169 | "PerlIO layer instance size", (UV)tab->size, | |
1170 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1171 | } |
1172 | /* Real layer with a data area */ | |
002e75cf JH |
1173 | if (f) { |
1174 | char *temp; | |
1175 | Newxz(temp, tab->size, char); | |
1176 | l = (PerlIOl*)temp; | |
1177 | if (l) { | |
1178 | l->next = *f; | |
1179 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1180 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1181 | *f = l; |
1182 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1183 | (void*)f, tab->name, | |
1184 | (mode) ? mode : "(Null)", (void*)arg); | |
1185 | if (*l->tab->Pushed && | |
1186 | (*l->tab->Pushed) | |
1187 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1188 | PerlIO_pop(aTHX_ f); | |
1189 | return NULL; | |
1190 | } | |
2dc2558e | 1191 | } |
002e75cf JH |
1192 | else |
1193 | return NULL; | |
2dc2558e NIS |
1194 | } |
1195 | } | |
1196 | else if (f) { | |
1197 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1198 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1199 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1200 | if (tab->Pushed && |
27da23d5 | 1201 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1202 | return NULL; |
14a5cf38 JH |
1203 | } |
1204 | } | |
1205 | return f; | |
60382766 NIS |
1206 | } |
1207 | ||
81fe74fb LT |
1208 | PerlIO * |
1209 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1210 | IV n, const char *mode, int fd, int imode, int perm, | |
1211 | PerlIO *old, int narg, SV **args) | |
1212 | { | |
1213 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1214 | if (tab && tab->Open) { | |
1215 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1216 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1217 | PerlIO_close(ret); |
1218 | return NULL; | |
1219 | } | |
1220 | return ret; | |
1221 | } | |
1222 | SETERRNO(EINVAL, LIB_INVARG); | |
1223 | return NULL; | |
1224 | } | |
1225 | ||
dfebf958 | 1226 | IV |
86e05cf2 NIS |
1227 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1228 | { | |
1229 | if (PerlIOValid(f)) { | |
1230 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1231 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1232 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1233 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1234 | } | |
1235 | else { | |
1236 | /* Not suitable - pop it */ | |
1237 | PerlIO_pop(aTHX_ f); | |
1238 | } | |
1239 | return 0; | |
1240 | } | |
1241 | return -1; | |
1242 | } | |
1243 | ||
1244 | IV | |
2dc2558e | 1245 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1246 | { |
8772537c AL |
1247 | PERL_UNUSED_ARG(mode); |
1248 | PERL_UNUSED_ARG(arg); | |
1249 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1250 | |
04892f78 | 1251 | if (PerlIOValid(f)) { |
86e05cf2 | 1252 | PerlIO *t; |
de009b76 | 1253 | const PerlIOl *l; |
14a5cf38 | 1254 | PerlIO_flush(f); |
86e05cf2 NIS |
1255 | /* |
1256 | * Strip all layers that are not suitable for a raw stream | |
1257 | */ | |
1258 | t = f; | |
1259 | while (t && (l = *t)) { | |
cc6623a8 | 1260 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1261 | /* Has a handler - normal case */ |
9d97e8b8 | 1262 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1263 | if (*t == l) { |
1264 | /* Layer still there - move down a layer */ | |
1265 | t = PerlIONext(t); | |
1266 | } | |
1267 | } | |
1268 | else { | |
1269 | return -1; | |
1270 | } | |
14a5cf38 JH |
1271 | } |
1272 | else { | |
86e05cf2 NIS |
1273 | /* No handler - pop it */ |
1274 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1275 | } |
1276 | } | |
86e05cf2 | 1277 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1278 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1279 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1280 | return 0; |
1281 | } | |
14a5cf38 JH |
1282 | } |
1283 | return -1; | |
dfebf958 NIS |
1284 | } |
1285 | ||
ac27b0f5 | 1286 | int |
14a5cf38 | 1287 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1288 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1289 | { |
14a5cf38 JH |
1290 | int code = 0; |
1291 | while (n < max) { | |
8772537c | 1292 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1293 | if (tab) { |
1294 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1295 | code = -1; | |
1296 | break; | |
1297 | } | |
1298 | } | |
1299 | n++; | |
1300 | } | |
1301 | return code; | |
e3f3bf95 NIS |
1302 | } |
1303 | ||
1304 | int | |
ac27b0f5 NIS |
1305 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1306 | { | |
14a5cf38 | 1307 | int code = 0; |
da0fccaa DG |
1308 | ENTER; |
1309 | save_scalar(PL_errgv); | |
53f1b6d2 | 1310 | if (f && names) { |
8772537c | 1311 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1312 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1313 | if (code == 0) { | |
d9dac8cd | 1314 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1315 | } |
3a1ee7e8 | 1316 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1317 | } |
da0fccaa | 1318 | LEAVE; |
14a5cf38 | 1319 | return code; |
ac27b0f5 NIS |
1320 | } |
1321 | ||
f3862f8b | 1322 | |
60382766 | 1323 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1324 | /* |
71200d45 | 1325 | * Given the abstraction above the public API functions |
14a5cf38 | 1326 | */ |
60382766 NIS |
1327 | |
1328 | int | |
f5b9d040 | 1329 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1330 | { |
68b5363f | 1331 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1332 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1333 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1334 | iotype, mode, (names) ? names : "(Null)"); |
1335 | ||
03c0554d NIS |
1336 | if (names) { |
1337 | /* Do not flush etc. if (e.g.) switching encodings. | |
1338 | if a pushed layer knows it needs to flush lower layers | |
1339 | (for example :unix which is never going to call them) | |
1340 | it can do the flush when it is pushed. | |
1341 | */ | |
1342 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1343 | } | |
1344 | else { | |
86e05cf2 | 1345 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1346 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1347 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1348 | O_BINARY so we can look for it in mode. | |
1349 | */ | |
1350 | if (!(mode & O_BINARY)) { | |
1351 | /* Text mode */ | |
86e05cf2 NIS |
1352 | /* FIXME?: Looking down the layer stack seems wrong, |
1353 | but is a way of reaching past (say) an encoding layer | |
1354 | to flip CRLF-ness of the layer(s) below | |
1355 | */ | |
03c0554d NIS |
1356 | while (*f) { |
1357 | /* Perhaps we should turn on bottom-most aware layer | |
1358 | e.g. Ilya's idea that UNIX TTY could serve | |
1359 | */ | |
cc6623a8 DM |
1360 | if (PerlIOBase(f)->tab && |
1361 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1362 | { | |
03c0554d NIS |
1363 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1364 | /* Not in text mode - flush any pending stuff and flip it */ | |
1365 | PerlIO_flush(f); | |
1366 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1367 | } | |
1368 | /* Only need to turn it on in one layer so we are done */ | |
1369 | return TRUE; | |
ed53a2bb | 1370 | } |
03c0554d | 1371 | f = PerlIONext(f); |
14a5cf38 | 1372 | } |
03c0554d NIS |
1373 | /* Not finding a CRLF aware layer presumably means we are binary |
1374 | which is not what was requested - so we failed | |
1375 | We _could_ push :crlf layer but so could caller | |
1376 | */ | |
1377 | return FALSE; | |
14a5cf38 | 1378 | } |
6ce75a77 | 1379 | #endif |
86e05cf2 NIS |
1380 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1381 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1382 | */ |
a0714e2c | 1383 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1384 | } |
f5b9d040 NIS |
1385 | } |
1386 | ||
f5b9d040 | 1387 | int |
e87a358a | 1388 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1389 | { |
37725cdc | 1390 | if (PerlIOValid(f)) { |
46c461b5 | 1391 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1392 | if (tab && tab->Close) |
1393 | return (*tab->Close)(aTHX_ f); | |
1394 | else | |
1395 | return PerlIOBase_close(aTHX_ f); | |
1396 | } | |
14a5cf38 | 1397 | else { |
93189314 | 1398 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1399 | return -1; |
1400 | } | |
76ced9ad NIS |
1401 | } |
1402 | ||
b931b1d9 | 1403 | int |
e87a358a | 1404 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1405 | { |
de009b76 | 1406 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1407 | while (PerlIOValid(f)) { |
1408 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1409 | if (PerlIO_lockcnt(f)) |
1410 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1411 | f = PerlIONext(f); | |
f6c77cf1 | 1412 | } |
14a5cf38 | 1413 | return code; |
b931b1d9 NIS |
1414 | } |
1415 | ||
b931b1d9 | 1416 | int |
e87a358a | 1417 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1418 | { |
97aff369 | 1419 | dVAR; |
b32dd47e | 1420 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1421 | } |
1422 | ||
1141d9f8 | 1423 | |
fcf2db38 | 1424 | static PerlIO_funcs * |
2edd7e44 NIS |
1425 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1426 | { | |
97aff369 | 1427 | dVAR; |
14a5cf38 | 1428 | /* |
71200d45 | 1429 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1430 | */ |
526fd1b4 | 1431 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1432 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1433 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1434 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1435 | if (!f) |
dcbac5bb | 1436 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1437 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1438 | return f; |
1439 | } | |
14a5cf38 JH |
1440 | |
1441 | /* | |
71200d45 | 1442 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1443 | */ |
1444 | switch (SvTYPE(sv)) { | |
1445 | case SVt_PVAV: | |
6a245ed1 | 1446 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1447 | case SVt_PVHV: |
6a245ed1 | 1448 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1449 | case SVt_PVCV: |
6a245ed1 | 1450 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1451 | case SVt_PVGV: |
6a245ed1 | 1452 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1453 | default: |
1454 | return NULL; | |
14a5cf38 | 1455 | } |
2edd7e44 NIS |
1456 | } |
1457 | ||
fcf2db38 | 1458 | PerlIO_list_t * |
14a5cf38 JH |
1459 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1460 | const char *mode, int narg, SV **args) | |
1461 | { | |
97aff369 | 1462 | dVAR; |
14a5cf38 JH |
1463 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1464 | int incdef = 1; | |
a1ea730d | 1465 | if (!PL_perlio) |
14a5cf38 JH |
1466 | PerlIO_stdstreams(aTHX); |
1467 | if (narg) { | |
dcda55fc | 1468 | SV * const arg = *args; |
14a5cf38 | 1469 | /* |
71200d45 NIS |
1470 | * If it is a reference but not an object see if we have a handler |
1471 | * for it | |
14a5cf38 JH |
1472 | */ |
1473 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1474 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1475 | if (handler) { |
3a1ee7e8 NIS |
1476 | def = PerlIO_list_alloc(aTHX); |
1477 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1478 | incdef = 0; |
1479 | } | |
1480 | /* | |
e934609f | 1481 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1482 | * something sensible else we will just stringfy and open |
71200d45 | 1483 | * resulting string. |
14a5cf38 JH |
1484 | */ |
1485 | } | |
1486 | } | |
9fe371da | 1487 | if (!layers || !*layers) |
11bcd5da | 1488 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1489 | if (layers && *layers) { |
1490 | PerlIO_list_t *av; | |
1491 | if (incdef) { | |
a951d81d | 1492 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1493 | } |
1494 | else { | |
1495 | av = def; | |
1496 | } | |
0cff2cf3 NIS |
1497 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1498 | return av; | |
1499 | } | |
1500 | else { | |
1501 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1502 | return NULL; |
0cff2cf3 | 1503 | } |
14a5cf38 JH |
1504 | } |
1505 | else { | |
1506 | if (incdef) | |
1507 | def->refcnt++; | |
1508 | return def; | |
1509 | } | |
ee518936 NIS |
1510 | } |
1511 | ||
1512 | PerlIO * | |
14a5cf38 JH |
1513 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1514 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1515 | { | |
97aff369 | 1516 | dVAR; |
14a5cf38 JH |
1517 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1518 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1519 | if (!layers || !*layers) |
11bcd5da | 1520 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1521 | if (layers && *layers) |
1522 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1523 | } | |
1524 | } | |
1525 | else { | |
de009b76 | 1526 | PerlIO_list_t *layera; |
14a5cf38 JH |
1527 | IV n; |
1528 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1529 | if (PerlIOValid(f)) { |
14a5cf38 | 1530 | /* |
71200d45 NIS |
1531 | * This is "reopen" - it is not tested as perl does not use it |
1532 | * yet | |
14a5cf38 JH |
1533 | */ |
1534 | PerlIOl *l = *f; | |
3a1ee7e8 | 1535 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1536 | while (l) { |
a951d81d | 1537 | SV *arg = NULL; |
cc6623a8 | 1538 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1539 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1540 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1541 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1542 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1543 | l = *PerlIONext(&l); |
1544 | } | |
1545 | } | |
1546 | else { | |
1547 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1548 | if (!layera) { |
1549 | return NULL; | |
1550 | } | |
14a5cf38 JH |
1551 | } |
1552 | /* | |
71200d45 | 1553 | * Start at "top" of layer stack |
14a5cf38 JH |
1554 | */ |
1555 | n = layera->cur - 1; | |
1556 | while (n >= 0) { | |
46c461b5 | 1557 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1558 | if (t && t->Open) { |
1559 | tab = t; | |
1560 | break; | |
1561 | } | |
1562 | n--; | |
1563 | } | |
1564 | if (tab) { | |
1565 | /* | |
71200d45 | 1566 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1567 | */ |
7cf31beb | 1568 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1569 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1570 | } |
14a5cf38 | 1571 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1572 | tab->name, layers ? layers : "(Null)", mode, fd, |
1573 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1574 | if (tab->Open) |
1575 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1576 | f, narg, args); | |
1577 | else { | |
1578 | SETERRNO(EINVAL, LIB_INVARG); | |
1579 | f = NULL; | |
1580 | } | |
14a5cf38 JH |
1581 | if (f) { |
1582 | if (n + 1 < layera->cur) { | |
1583 | /* | |
1584 | * More layers above the one that we used to open - | |
71200d45 | 1585 | * apply them now |
14a5cf38 | 1586 | */ |
d9dac8cd NIS |
1587 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1588 | /* If pushing layers fails close the file */ | |
1589 | PerlIO_close(f); | |
14a5cf38 JH |
1590 | f = NULL; |
1591 | } | |
1592 | } | |
1593 | } | |
1594 | } | |
3a1ee7e8 | 1595 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1596 | } |
1597 | return f; | |
ee518936 | 1598 | } |
b931b1d9 NIS |
1599 | |
1600 | ||
9e353e3b | 1601 | SSize_t |
e87a358a | 1602 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1603 | { |
7918f24d NC |
1604 | PERL_ARGS_ASSERT_PERLIO_READ; |
1605 | ||
b32dd47e | 1606 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1607 | } |
1608 | ||
313ca112 | 1609 | SSize_t |
e87a358a | 1610 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1611 | { |
7918f24d NC |
1612 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1613 | ||
b32dd47e | 1614 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1615 | } |
1616 | ||
9e353e3b | 1617 | SSize_t |
e87a358a | 1618 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1619 | { |
7918f24d NC |
1620 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1621 | ||
b32dd47e | 1622 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1623 | } |
1624 | ||
6f9d8c32 | 1625 | int |
e87a358a | 1626 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1627 | { |
b32dd47e | 1628 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1629 | } |
1630 | ||
9e353e3b | 1631 | Off_t |
e87a358a | 1632 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1633 | { |
b32dd47e | 1634 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1635 | } |
1636 | ||
6f9d8c32 | 1637 | int |
e87a358a | 1638 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1639 | { |
97aff369 | 1640 | dVAR; |
14a5cf38 JH |
1641 | if (f) { |
1642 | if (*f) { | |
de009b76 | 1643 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1644 | |
1645 | if (tab && tab->Flush) | |
f62ce20a | 1646 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1647 | else |
1648 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1649 | } |
1650 | else { | |
fe5a182c | 1651 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1652 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1653 | return -1; |
1654 | } | |
1655 | } | |
1656 | else { | |
1657 | /* | |
1658 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1659 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1660 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1661 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1662 | * decisions? --jhi |
14a5cf38 | 1663 | */ |
303f2dc3 DM |
1664 | PerlIOl **table = &PL_perlio; |
1665 | PerlIOl *ff; | |
14a5cf38 | 1666 | int code = 0; |
303f2dc3 | 1667 | while ((ff = *table)) { |
14a5cf38 | 1668 | int i; |
303f2dc3 | 1669 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1670 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1671 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1672 | code = -1; |
303f2dc3 | 1673 | ff++; |
14a5cf38 JH |
1674 | } |
1675 | } | |
1676 | return code; | |
1677 | } | |
760ac839 LW |
1678 | } |
1679 | ||
a9c883f6 | 1680 | void |
f62ce20a | 1681 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1682 | { |
97aff369 | 1683 | dVAR; |
303f2dc3 DM |
1684 | PerlIOl **table = &PL_perlio; |
1685 | PerlIOl *f; | |
14a5cf38 JH |
1686 | while ((f = *table)) { |
1687 | int i; | |
303f2dc3 | 1688 | table = (PerlIOl **) (f++); |
14a5cf38 | 1689 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1690 | if (f->next |
1691 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1692 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1693 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1694 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1695 | f++; |
1696 | } | |
a9c883f6 | 1697 | } |
a9c883f6 NIS |
1698 | } |
1699 | ||
06da4f11 | 1700 | int |
e87a358a | 1701 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1702 | { |
b32dd47e | 1703 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1704 | } |
1705 | ||
f3862f8b NIS |
1706 | int |
1707 | PerlIO_isutf8(PerlIO *f) | |
1708 | { | |
1b7a0411 JH |
1709 | if (PerlIOValid(f)) |
1710 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1711 | else | |
1712 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1713 | |
1b7a0411 | 1714 | return -1; |
f3862f8b NIS |
1715 | } |
1716 | ||
6f9d8c32 | 1717 | int |
e87a358a | 1718 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1719 | { |
b32dd47e | 1720 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1721 | } |
1722 | ||
9e353e3b | 1723 | int |
e87a358a | 1724 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1725 | { |
b32dd47e | 1726 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1727 | } |
1728 | ||
9e353e3b | 1729 | void |
e87a358a | 1730 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1731 | { |
b32dd47e | 1732 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1733 | } |
1734 | ||
9e353e3b | 1735 | void |
e87a358a | 1736 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1737 | { |
b32dd47e | 1738 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1739 | } |
1740 | ||
9e353e3b NIS |
1741 | int |
1742 | PerlIO_has_base(PerlIO *f) | |
1743 | { | |
1b7a0411 | 1744 | if (PerlIOValid(f)) { |
46c461b5 | 1745 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1746 | |
1747 | if (tab) | |
1748 | return (tab->Get_base != NULL); | |
1b7a0411 | 1749 | } |
1b7a0411 JH |
1750 | |
1751 | return 0; | |
760ac839 LW |
1752 | } |
1753 | ||
9e353e3b NIS |
1754 | int |
1755 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1756 | { |
d7dfc388 SK |
1757 | if (PerlIOValid(f)) { |
1758 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1759 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1760 | |
d7dfc388 SK |
1761 | if (tab) |
1762 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1763 | } |
14a5cf38 | 1764 | } |
1b7a0411 | 1765 | |
14a5cf38 | 1766 | return 0; |
9e353e3b NIS |
1767 | } |
1768 | ||
9e353e3b NIS |
1769 | int |
1770 | PerlIO_has_cntptr(PerlIO *f) | |
1771 | { | |
04892f78 | 1772 | if (PerlIOValid(f)) { |
46c461b5 | 1773 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1774 | |
1775 | if (tab) | |
1776 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1777 | } |
1b7a0411 | 1778 | |
14a5cf38 | 1779 | return 0; |
9e353e3b NIS |
1780 | } |
1781 | ||
9e353e3b NIS |
1782 | int |
1783 | PerlIO_canset_cnt(PerlIO *f) | |
1784 | { | |
04892f78 | 1785 | if (PerlIOValid(f)) { |
46c461b5 | 1786 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1787 | |
1788 | if (tab) | |
1789 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1790 | } |
1b7a0411 | 1791 | |
14a5cf38 | 1792 | return 0; |
760ac839 LW |
1793 | } |
1794 | ||
888911fc | 1795 | STDCHAR * |
e87a358a | 1796 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1797 | { |
b32dd47e | 1798 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1799 | } |
1800 | ||
b66f3475 | 1801 | SSize_t |
e87a358a | 1802 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1803 | { |
b66f3475 | 1804 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1805 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1806 | } |
1807 | ||
9e353e3b | 1808 | STDCHAR * |
e87a358a | 1809 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1810 | { |
b32dd47e | 1811 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1812 | } |
1813 | ||
b66f3475 | 1814 | SSize_t |
e87a358a | 1815 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1816 | { |
b32dd47e | 1817 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1818 | } |
1819 | ||
9e353e3b | 1820 | void |
b66f3475 | 1821 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1822 | { |
b32dd47e | 1823 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1824 | } |
1825 | ||
9e353e3b | 1826 | void |
b66f3475 | 1827 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1828 | { |
b32dd47e | 1829 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1830 | } |
1831 | ||
4ec2216f | 1832 | |
9e353e3b | 1833 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1834 | /* |
71200d45 | 1835 | * utf8 and raw dummy layers |
14a5cf38 | 1836 | */ |
dfebf958 | 1837 | |
26fb694e | 1838 | IV |
2dc2558e | 1839 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1840 | { |
96a5add6 | 1841 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1842 | PERL_UNUSED_ARG(mode); |
1843 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1844 | if (PerlIOValid(f)) { |
cc6623a8 | 1845 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1846 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1847 | else | |
1848 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1849 | return 0; | |
1850 | } | |
1851 | return -1; | |
26fb694e NIS |
1852 | } |
1853 | ||
27da23d5 | 1854 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1855 | sizeof(PerlIO_funcs), |
14a5cf38 | 1856 | "utf8", |
2dc2558e | 1857 | 0, |
a778d1f5 | 1858 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1859 | PerlIOUtf8_pushed, |
1860 | NULL, | |
c0888ace | 1861 | PerlIOBase_open, |
14a5cf38 JH |
1862 | NULL, |
1863 | NULL, | |
1864 | NULL, | |
1865 | NULL, | |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
1869 | NULL, | |
de009b76 AL |
1870 | NULL, |
1871 | NULL, | |
22569500 NIS |
1872 | NULL, /* flush */ |
1873 | NULL, /* fill */ | |
14a5cf38 JH |
1874 | NULL, |
1875 | NULL, | |
1876 | NULL, | |
1877 | NULL, | |
22569500 NIS |
1878 | NULL, /* get_base */ |
1879 | NULL, /* get_bufsiz */ | |
1880 | NULL, /* get_ptr */ | |
1881 | NULL, /* get_cnt */ | |
1882 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1883 | }; |
1884 | ||
27da23d5 | 1885 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1886 | sizeof(PerlIO_funcs), |
14a5cf38 | 1887 | "bytes", |
2dc2558e | 1888 | 0, |
a778d1f5 | 1889 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1890 | PerlIOUtf8_pushed, |
1891 | NULL, | |
c0888ace | 1892 | PerlIOBase_open, |
14a5cf38 JH |
1893 | NULL, |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
de009b76 AL |
1901 | NULL, |
1902 | NULL, | |
22569500 NIS |
1903 | NULL, /* flush */ |
1904 | NULL, /* fill */ | |
14a5cf38 JH |
1905 | NULL, |
1906 | NULL, | |
1907 | NULL, | |
1908 | NULL, | |
22569500 NIS |
1909 | NULL, /* get_base */ |
1910 | NULL, /* get_bufsiz */ | |
1911 | NULL, /* get_ptr */ | |
1912 | NULL, /* get_cnt */ | |
1913 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1914 | }; |
1915 | ||
27da23d5 | 1916 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1917 | sizeof(PerlIO_funcs), |
14a5cf38 | 1918 | "raw", |
2dc2558e | 1919 | 0, |
14a5cf38 JH |
1920 | PERLIO_K_DUMMY, |
1921 | PerlIORaw_pushed, | |
1922 | PerlIOBase_popped, | |
ecfd0649 | 1923 | PerlIOBase_open, |
14a5cf38 JH |
1924 | NULL, |
1925 | NULL, | |
1926 | NULL, | |
1927 | NULL, | |
1928 | NULL, | |
1929 | NULL, | |
1930 | NULL, | |
1931 | NULL, | |
de009b76 AL |
1932 | NULL, |
1933 | NULL, | |
22569500 NIS |
1934 | NULL, /* flush */ |
1935 | NULL, /* fill */ | |
14a5cf38 JH |
1936 | NULL, |
1937 | NULL, | |
1938 | NULL, | |
1939 | NULL, | |
22569500 NIS |
1940 | NULL, /* get_base */ |
1941 | NULL, /* get_bufsiz */ | |
1942 | NULL, /* get_ptr */ | |
1943 | NULL, /* get_cnt */ | |
1944 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1945 | }; |
1946 | /*--------------------------------------------------------------------------------------*/ | |
1947 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1948 | /* |
71200d45 | 1949 | * "Methods" of the "base class" |
14a5cf38 | 1950 | */ |
9e353e3b NIS |
1951 | |
1952 | IV | |
f62ce20a | 1953 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1954 | { |
04892f78 | 1955 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1956 | } |
1957 | ||
f5b9d040 | 1958 | char * |
81428673 | 1959 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1960 | { |
1961 | char *s = buf; | |
81428673 | 1962 | if (PerlIOValid(f)) { |
de009b76 | 1963 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1964 | if (flags & PERLIO_F_APPEND) { |
1965 | *s++ = 'a'; | |
1966 | if (flags & PERLIO_F_CANREAD) { | |
1967 | *s++ = '+'; | |
1968 | } | |
14a5cf38 | 1969 | } |
81428673 NIS |
1970 | else if (flags & PERLIO_F_CANREAD) { |
1971 | *s++ = 'r'; | |
1972 | if (flags & PERLIO_F_CANWRITE) | |
1973 | *s++ = '+'; | |
1974 | } | |
1975 | else if (flags & PERLIO_F_CANWRITE) { | |
1976 | *s++ = 'w'; | |
1977 | if (flags & PERLIO_F_CANREAD) { | |
1978 | *s++ = '+'; | |
1979 | } | |
14a5cf38 | 1980 | } |
35990314 | 1981 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1982 | if (!(flags & PERLIO_F_CRLF)) |
1983 | *s++ = 'b'; | |
5f1a76d0 | 1984 | #endif |
81428673 | 1985 | } |
14a5cf38 JH |
1986 | *s = '\0'; |
1987 | return buf; | |
f5b9d040 NIS |
1988 | } |
1989 | ||
81428673 | 1990 | |
76ced9ad | 1991 | IV |
2dc2558e | 1992 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1993 | { |
de009b76 | 1994 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1995 | PERL_UNUSED_CONTEXT; |
8772537c | 1996 | PERL_UNUSED_ARG(arg); |
de009b76 | 1997 | |
14a5cf38 JH |
1998 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1999 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 2000 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
2001 | l->flags |= PERLIO_F_FASTGETS; |
2002 | if (mode) { | |
3b6c1aba | 2003 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2004 | mode++; |
2005 | switch (*mode++) { | |
2006 | case 'r': | |
2007 | l->flags |= PERLIO_F_CANREAD; | |
2008 | break; | |
2009 | case 'a': | |
2010 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2011 | break; | |
2012 | case 'w': | |
2013 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2014 | break; | |
2015 | default: | |
93189314 | 2016 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2017 | return -1; |
2018 | } | |
2019 | while (*mode) { | |
2020 | switch (*mode++) { | |
2021 | case '+': | |
2022 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2023 | break; | |
2024 | case 'b': | |
2025 | l->flags &= ~PERLIO_F_CRLF; | |
2026 | break; | |
2027 | case 't': | |
2028 | l->flags |= PERLIO_F_CRLF; | |
2029 | break; | |
2030 | default: | |
93189314 | 2031 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2032 | return -1; |
2033 | } | |
2034 | } | |
2035 | } | |
2036 | else { | |
2037 | if (l->next) { | |
2038 | l->flags |= l->next->flags & | |
2039 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2040 | PERLIO_F_APPEND); | |
2041 | } | |
2042 | } | |
5e2ab84b | 2043 | #if 0 |
14a5cf38 | 2044 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2045 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2046 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2047 | #endif |
14a5cf38 | 2048 | return 0; |
76ced9ad NIS |
2049 | } |
2050 | ||
2051 | IV | |
f62ce20a | 2052 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2053 | { |
96a5add6 | 2054 | PERL_UNUSED_CONTEXT; |
8772537c | 2055 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2056 | return 0; |
760ac839 LW |
2057 | } |
2058 | ||
9e353e3b | 2059 | SSize_t |
f62ce20a | 2060 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2061 | { |
14a5cf38 | 2062 | /* |
71200d45 | 2063 | * Save the position as current head considers it |
14a5cf38 | 2064 | */ |
de009b76 | 2065 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2066 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2067 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2068 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2069 | } |
2070 | ||
f6c77cf1 | 2071 | SSize_t |
f62ce20a | 2072 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2073 | { |
14a5cf38 JH |
2074 | STDCHAR *buf = (STDCHAR *) vbuf; |
2075 | if (f) { | |
263df5f1 JH |
2076 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2077 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2078 | SETERRNO(EBADF, SS_IVCHAN); | |
2079 | return 0; | |
2080 | } | |
14a5cf38 | 2081 | while (count > 0) { |
93c2c2ec IZ |
2082 | get_cnt: |
2083 | { | |
14a5cf38 JH |
2084 | SSize_t avail = PerlIO_get_cnt(f); |
2085 | SSize_t take = 0; | |
2086 | if (avail > 0) | |
94e529cc | 2087 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2088 | if (take > 0) { |
2089 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2090 | Copy(ptr, buf, take, STDCHAR); | |
2091 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2092 | count -= take; | |
2093 | buf += take; | |
93c2c2ec IZ |
2094 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2095 | goto get_cnt; | |
14a5cf38 JH |
2096 | } |
2097 | if (count > 0 && avail <= 0) { | |
2098 | if (PerlIO_fill(f) != 0) | |
2099 | break; | |
2100 | } | |
93c2c2ec | 2101 | } |
14a5cf38 JH |
2102 | } |
2103 | return (buf - (STDCHAR *) vbuf); | |
2104 | } | |
f6c77cf1 | 2105 | return 0; |
f6c77cf1 NIS |
2106 | } |
2107 | ||
9e353e3b | 2108 | IV |
f62ce20a | 2109 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2110 | { |
96a5add6 | 2111 | PERL_UNUSED_CONTEXT; |
8772537c | 2112 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2113 | return 0; |
9e353e3b NIS |
2114 | } |
2115 | ||
2116 | IV | |
f62ce20a | 2117 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2118 | { |
96a5add6 | 2119 | PERL_UNUSED_CONTEXT; |
8772537c | 2120 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2121 | return -1; |
06da4f11 NIS |
2122 | } |
2123 | ||
2124 | IV | |
f62ce20a | 2125 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2126 | { |
37725cdc NIS |
2127 | IV code = -1; |
2128 | if (PerlIOValid(f)) { | |
2129 | PerlIO *n = PerlIONext(f); | |
2130 | code = PerlIO_flush(f); | |
2131 | PerlIOBase(f)->flags &= | |
2132 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2133 | while (PerlIOValid(n)) { | |
de009b76 | 2134 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2135 | if (tab && tab->Close) { |
2136 | if ((*tab->Close)(aTHX_ n) != 0) | |
2137 | code = -1; | |
2138 | break; | |
2139 | } | |
2140 | else { | |
2141 | PerlIOBase(n)->flags &= | |
2142 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2143 | } | |
2144 | n = PerlIONext(n); | |
2145 | } | |
2146 | } | |
2147 | else { | |
2148 | SETERRNO(EBADF, SS_IVCHAN); | |
2149 | } | |
14a5cf38 | 2150 | return code; |
9e353e3b NIS |
2151 | } |
2152 | ||
2153 | IV | |
f62ce20a | 2154 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2155 | { |
96a5add6 | 2156 | PERL_UNUSED_CONTEXT; |
04892f78 | 2157 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2158 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2159 | } | |
2160 | return 1; | |
9e353e3b NIS |
2161 | } |
2162 | ||
2163 | IV | |
f62ce20a | 2164 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2165 | { |
96a5add6 | 2166 | PERL_UNUSED_CONTEXT; |
04892f78 | 2167 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2168 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2169 | } | |
2170 | return 1; | |
9e353e3b NIS |
2171 | } |
2172 | ||
2173 | void | |
f62ce20a | 2174 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2175 | { |
04892f78 | 2176 | if (PerlIOValid(f)) { |
dcda55fc | 2177 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2178 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2179 | if (PerlIOValid(n)) |
14a5cf38 JH |
2180 | PerlIO_clearerr(n); |
2181 | } | |
9e353e3b NIS |
2182 | } |
2183 | ||
2184 | void | |
f62ce20a | 2185 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2186 | { |
96a5add6 | 2187 | PERL_UNUSED_CONTEXT; |
04892f78 | 2188 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2189 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2190 | } | |
9e353e3b NIS |
2191 | } |
2192 | ||
93a8090d NIS |
2193 | SV * |
2194 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2195 | { | |
2196 | if (!arg) | |
a0714e2c | 2197 | return NULL; |
24d147a6 | 2198 | #ifdef USE_ITHREADS |
93a8090d | 2199 | if (param) { |
a951d81d BL |
2200 | arg = sv_dup(arg, param); |
2201 | SvREFCNT_inc_simple_void_NN(arg); | |
2202 | return arg; | |
93a8090d NIS |
2203 | } |
2204 | else { | |
2205 | return newSVsv(arg); | |
2206 | } | |
2207 | #else | |
1b6737cc | 2208 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2209 | return newSVsv(arg); |
2210 | #endif | |
2211 | } | |
2212 | ||
2213 | PerlIO * | |
ecdeb87c | 2214 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2215 | { |
1b6737cc | 2216 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2217 | if (PerlIOValid(nexto)) { |
de009b76 | 2218 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2219 | if (tab && tab->Dup) |
2220 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2221 | else | |
2222 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2223 | } |
2224 | if (f) { | |
dcda55fc | 2225 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2226 | SV *arg = NULL; |
93a8090d | 2227 | char buf[8]; |
fe5a182c | 2228 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2229 | self ? self->name : "(Null)", |
2230 | (void*)f, (void*)o, (void*)param); | |
2231 | if (self && self->Getarg) | |
210e727c | 2232 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2233 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2234 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2235 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2236 | SvREFCNT_dec(arg); |
93a8090d NIS |
2237 | } |
2238 | return f; | |
2239 | } | |
2240 | ||
27da23d5 | 2241 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2242 | |
8b84d7dd | 2243 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2244 | static void |
2245 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2246 | dVAR; |
22c96fc1 | 2247 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2248 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2249 | int *new_array; |
2250 | ||
2251 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2252 | old_max, new_fd, new_max); | |
2253 | ||
2254 | if (new_fd < old_max) { | |
2255 | return; | |
2256 | } | |
2257 | ||
f4ae5be6 NC |
2258 | assert (new_max > new_fd); |
2259 | ||
eae082a0 JH |
2260 | /* Use plain realloc() since we need this memory to be really |
2261 | * global and visible to all the interpreters and/or threads. */ | |
2262 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2263 | |
2264 | if (!new_array) { | |
8b84d7dd | 2265 | #ifdef USE_ITHREADS |
6cb8cb21 | 2266 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2267 | #endif |
4cbe3a7d | 2268 | croak_no_mem(); |
22c96fc1 NC |
2269 | } |
2270 | ||
2271 | PL_perlio_fd_refcnt_size = new_max; | |
2272 | PL_perlio_fd_refcnt = new_array; | |
2273 | ||
95b63a38 JH |
2274 | PerlIO_debug("Zeroing %p, %d\n", |
2275 | (void*)(new_array + old_max), | |
2276 | new_max - old_max); | |
22c96fc1 NC |
2277 | |
2278 | Zero(new_array + old_max, new_max - old_max, int); | |
2279 | } | |
2280 | ||
2281 | ||
93a8090d NIS |
2282 | void |
2283 | PerlIO_init(pTHX) | |
2284 | { | |
8b84d7dd | 2285 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2286 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2287 | } |
2288 | ||
168d5872 NIS |
2289 | void |
2290 | PerlIOUnix_refcnt_inc(int fd) | |
2291 | { | |
27da23d5 | 2292 | dTHX; |
22c96fc1 | 2293 | if (fd >= 0) { |
97aff369 | 2294 | dVAR; |
22c96fc1 | 2295 | |
8b84d7dd | 2296 | #ifdef USE_ITHREADS |
6cb8cb21 | 2297 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2298 | #endif |
22c96fc1 NC |
2299 | if (fd >= PL_perlio_fd_refcnt_size) |
2300 | S_more_refcounted_fds(aTHX_ fd); | |
2301 | ||
27da23d5 | 2302 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2303 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2304 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2305 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2306 | fd, PL_perlio_fd_refcnt[fd]); | |
2307 | } | |
2308 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2309 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2310 | |
8b84d7dd | 2311 | #ifdef USE_ITHREADS |
6cb8cb21 | 2312 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2313 | #endif |
8b84d7dd | 2314 | } else { |
12605ff9 | 2315 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2316 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2317 | } |
2318 | } | |
2319 | ||
168d5872 NIS |
2320 | int |
2321 | PerlIOUnix_refcnt_dec(int fd) | |
2322 | { | |
2323 | int cnt = 0; | |
22c96fc1 | 2324 | if (fd >= 0) { |
97aff369 | 2325 | dVAR; |
8b84d7dd | 2326 | #ifdef USE_ITHREADS |
6cb8cb21 | 2327 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2328 | #endif |
8b84d7dd | 2329 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2330 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2331 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2332 | fd, PL_perlio_fd_refcnt_size); |
2333 | } | |
2334 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2335 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2336 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2337 | fd, PL_perlio_fd_refcnt[fd]); |
2338 | } | |
27da23d5 | 2339 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2340 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2341 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2342 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2343 | #endif |
8b84d7dd | 2344 | } else { |
12605ff9 | 2345 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2346 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2347 | } |
2348 | return cnt; | |
2349 | } | |
2350 | ||
2e0cfa16 FC |
2351 | int |
2352 | PerlIOUnix_refcnt(int fd) | |
2353 | { | |
2354 | dTHX; | |
2355 | int cnt = 0; | |
2356 | if (fd >= 0) { | |
2357 | dVAR; | |
2358 | #ifdef USE_ITHREADS | |
2359 | MUTEX_LOCK(&PL_perlio_mutex); | |
2360 | #endif | |
2361 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2362 | /* diag_listed_as: refcnt: fd %d%s */ | |
2363 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2364 | fd, PL_perlio_fd_refcnt_size); | |
2365 | } | |
2366 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2367 | /* diag_listed_as: refcnt: fd %d%s */ | |
2368 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2369 | fd, PL_perlio_fd_refcnt[fd]); | |
2370 | } | |
2371 | cnt = PL_perlio_fd_refcnt[fd]; | |
2372 | #ifdef USE_ITHREADS | |
2373 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2374 | #endif | |
2375 | } else { | |
2376 | /* diag_listed_as: refcnt: fd %d%s */ | |
2377 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2378 | } | |
2379 | return cnt; | |
2380 | } | |
2381 | ||
694c95cf JH |
2382 | void |
2383 | PerlIO_cleanup(pTHX) | |
2384 | { | |
97aff369 | 2385 | dVAR; |
694c95cf JH |
2386 | int i; |
2387 | #ifdef USE_ITHREADS | |
a25429c6 | 2388 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2389 | #else |
2390 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2391 | #endif |
e47547a8 | 2392 | |
694c95cf JH |
2393 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2394 | for (i=0; i < 3; i++) | |
2395 | PerlIOUnix_refcnt_inc(i); | |
2396 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2397 | /* Restore STDIN..STDERR refcount */ | |
2398 | for (i=0; i < 3; i++) | |
2399 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2400 | |
2401 | if (PL_known_layers) { | |
2402 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2403 | PL_known_layers = NULL; | |
2404 | } | |
27da23d5 | 2405 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2406 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2407 | PL_def_layerlist = NULL; | |
2408 | } | |
6cb8cb21 RGS |
2409 | } |
2410 | ||
0934c9d9 | 2411 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2412 | { |
53d44271 | 2413 | dVAR; |
4f3da17a DM |
2414 | #if 0 |
2415 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2416 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2417 | being present (at least in win32) :-(. | |
2418 | Disable for now. | |
2419 | */ | |
6cb8cb21 RGS |
2420 | #ifdef DEBUGGING |
2421 | { | |
2422 | /* By now all filehandles should have been closed, so any | |
2423 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2424 | * errors. */ | |
77db880c JH |
2425 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2426 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2427 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2428 | int i; |
2429 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2430 | if (PL_perlio_fd_refcnt[i]) { |
2431 | const STRLEN len = | |
2432 | my_snprintf(buf, sizeof(buf), | |
2433 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2434 | i, PL_perlio_fd_refcnt[i]); | |
2435 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2436 | } | |
6cb8cb21 RGS |
2437 | } |
2438 | } | |
2439 | #endif | |
4f3da17a | 2440 | #endif |
eae082a0 JH |
2441 | /* Not bothering with PL_perlio_mutex since by now |
2442 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2443 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2444 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2445 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2446 | PL_perlio_fd_refcnt = NULL; |
2447 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2448 | } |
694c95cf JH |
2449 | } |
2450 | ||
9e353e3b | 2451 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2452 | /* |
71200d45 | 2453 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2454 | */ |
9e353e3b | 2455 | |
14a5cf38 | 2456 | typedef struct { |
22569500 NIS |
2457 | struct _PerlIO base; /* The generic part */ |
2458 | int fd; /* UNIX like file descriptor */ | |
2459 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2460 | } PerlIOUnix; |
2461 | ||
abf9167d DM |
2462 | static void |
2463 | S_lockcnt_dec(pTHX_ const void* f) | |
2464 | { | |
2465 | PerlIO_lockcnt((PerlIO*)f)--; | |
2466 | } | |
2467 | ||
2468 | ||
2469 | /* call the signal handler, and if that handler happens to clear | |
2470 | * this handle, free what we can and return true */ | |
2471 | ||
2472 | static bool | |
2473 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2474 | ENTER; | |
2475 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2476 | PerlIO_lockcnt(f)++; | |
2477 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2478 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2479 | LEAVE; | |
abf9167d | 2480 | return 0; |
be48bbe8 | 2481 | } |
abf9167d DM |
2482 | /* we've just run some perl-level code that could have done |
2483 | * anything, including closing the file or clearing this layer. | |
2484 | * If so, free any lower layers that have already been | |
2485 | * cleared, then return an error. */ | |
2486 | while (PerlIOValid(f) && | |
2487 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2488 | { | |
2489 | const PerlIOl *l = *f; | |
2490 | *f = l->next; | |
2491 | Safefree(l); | |
2492 | } | |
be48bbe8 | 2493 | LEAVE; |
abf9167d DM |
2494 | return 1; |
2495 | } | |
2496 | ||
6f9d8c32 | 2497 | int |
9e353e3b | 2498 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2499 | { |
14a5cf38 | 2500 | int oflags = -1; |
3b6c1aba | 2501 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2502 | mode++; |
2503 | switch (*mode) { | |
2504 | case 'r': | |
2505 | oflags = O_RDONLY; | |
2506 | if (*++mode == '+') { | |
2507 | oflags = O_RDWR; | |
2508 | mode++; | |
2509 | } | |
2510 | break; | |
2511 | ||
2512 | case 'w': | |
2513 | oflags = O_CREAT | O_TRUNC; | |
2514 | if (*++mode == '+') { | |
2515 | oflags |= O_RDWR; | |
2516 | mode++; | |
2517 | } | |
2518 | else | |
2519 | oflags |= O_WRONLY; | |
2520 | break; | |
2521 | ||
2522 | case 'a': | |
2523 | oflags = O_CREAT | O_APPEND; | |
2524 | if (*++mode == '+') { | |
2525 | oflags |= O_RDWR; | |
2526 | mode++; | |
2527 | } | |
2528 | else | |
2529 | oflags |= O_WRONLY; | |
2530 | break; | |
2531 | } | |
2532 | if (*mode == 'b') { | |
2533 | oflags |= O_BINARY; | |
2534 | oflags &= ~O_TEXT; | |
2535 | mode++; | |
2536 | } | |
2537 | else if (*mode == 't') { | |
2538 | oflags |= O_TEXT; | |
2539 | oflags &= ~O_BINARY; | |
2540 | mode++; | |
2541 | } | |
93f31ee9 PG |
2542 | else { |
2543 | #ifdef PERLIO_USING_CRLF | |
2544 | /* | |
2545 | * If neither "t" nor "b" was specified, open the file | |
2546 | * in O_BINARY mode. | |
2547 | */ | |
2548 | oflags |= O_BINARY; | |
2549 | #endif | |
2550 | } | |
14a5cf38 | 2551 | if (*mode || oflags == -1) { |
93189314 | 2552 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2553 | oflags = -1; |
2554 | } | |
2555 | return oflags; | |
9e353e3b NIS |
2556 | } |
2557 | ||
2558 | IV | |
f62ce20a | 2559 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2560 | { |
96a5add6 | 2561 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2562 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2563 | } |
2564 | ||
aa063c35 NIS |
2565 | static void |
2566 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2567 | { |
de009b76 | 2568 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2569 | #if defined(WIN32) |
aa063c35 NIS |
2570 | Stat_t st; |
2571 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2572 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2573 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2574 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2575 | } | |
aa063c35 NIS |
2576 | else { |
2577 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2578 | } | |
6caa5a9c NIS |
2579 | } |
2580 | #endif | |
aa063c35 NIS |
2581 | s->fd = fd; |
2582 | s->oflags = imode; | |
2583 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2584 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2585 | } |
2586 | ||
2587 | IV | |
2588 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2589 | { | |
2590 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2591 | if (*PerlIONext(f)) { |
4b069b44 | 2592 | /* We never call down so do any pending stuff now */ |
03c0554d | 2593 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2594 | /* |
71200d45 | 2595 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2596 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2597 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2598 | */ |
acbd16bf | 2599 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2600 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2601 | } |
2602 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2603 | |
14a5cf38 | 2604 | return code; |
4b803d04 NIS |
2605 | } |
2606 | ||
c2fcde81 JH |
2607 | IV |
2608 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2609 | { | |
de009b76 | 2610 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2611 | Off_t new_loc; |
96a5add6 | 2612 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2613 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2614 | #ifdef ESPIPE | |
2615 | SETERRNO(ESPIPE, LIB_INVARG); | |
2616 | #else | |
2617 | SETERRNO(EINVAL, LIB_INVARG); | |
2618 | #endif | |
2619 | return -1; | |
2620 | } | |
0723351e NC |
2621 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2622 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2623 | return -1; |
c2fcde81 JH |
2624 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2625 | return 0; | |
2626 | } | |
2627 | ||
9e353e3b | 2628 | PerlIO * |
14a5cf38 JH |
2629 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2630 | IV n, const char *mode, int fd, int imode, | |
2631 | int perm, PerlIO *f, int narg, SV **args) | |
2632 | { | |
d9dac8cd | 2633 | if (PerlIOValid(f)) { |
cc6623a8 | 2634 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2635 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2636 | } |
2637 | if (narg > 0) { | |
3b6c1aba | 2638 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2639 | mode++; |
2640 | else { | |
2641 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2642 | #ifdef VMS |
2643 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2644 | #else | |
14a5cf38 | 2645 | perm = 0666; |
5e2ce0f3 | 2646 | #endif |
14a5cf38 JH |
2647 | } |
2648 | if (imode != -1) { | |
41188aa0 TC |
2649 | STRLEN len; |
2650 | const char *path = SvPV_const(*args, len); | |
2651 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2652 | return NULL; |
14a5cf38 JH |
2653 | fd = PerlLIO_open3(path, imode, perm); |
2654 | } | |
2655 | } | |
2656 | if (fd >= 0) { | |
3b6c1aba | 2657 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2658 | mode++; |
2659 | if (!f) { | |
2660 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2661 | } |
2662 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2663 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2664 | return NULL; | |
2665 | } | |
d9dac8cd | 2666 | } |
aa063c35 | 2667 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2668 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2669 | if (*mode == IoTYPE_APPEND) |
2670 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2671 | return f; |
2672 | } | |
2673 | else { | |
2674 | if (f) { | |
6f207bd3 | 2675 | NOOP; |
14a5cf38 | 2676 | /* |
71200d45 | 2677 | * FIXME: pop layers ??? |
14a5cf38 JH |
2678 | */ |
2679 | } | |
2680 | return NULL; | |
2681 | } | |
9e353e3b NIS |
2682 | } |
2683 | ||
71200d45 | 2684 | PerlIO * |
ecdeb87c | 2685 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2686 | { |
dcda55fc | 2687 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2688 | int fd = os->fd; |
ecdeb87c NIS |
2689 | if (flags & PERLIO_DUP_FD) { |
2690 | fd = PerlLIO_dup(fd); | |
2691 | } | |
22c96fc1 | 2692 | if (fd >= 0) { |
ecdeb87c | 2693 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2694 | if (f) { |
2695 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2696 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2697 | return f; |
2698 | } | |
71200d45 NIS |
2699 | } |
2700 | return NULL; | |
2701 | } | |
2702 | ||
2703 | ||
9e353e3b | 2704 | SSize_t |
f62ce20a | 2705 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2706 | { |
97aff369 | 2707 | dVAR; |
abf9167d DM |
2708 | int fd; |
2709 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2710 | return -1; | |
2711 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2712 | #ifdef PERLIO_STD_SPECIAL |
2713 | if (fd == 0) | |
2714 | return PERLIO_STD_IN(fd, vbuf, count); | |
2715 | #endif | |
81428673 | 2716 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2717 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2718 | return 0; |
1fd8f4ce | 2719 | } |
14a5cf38 | 2720 | while (1) { |
b464bac0 | 2721 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2722 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2723 | if (len < 0) { |
2724 | if (errno != EAGAIN) { | |
2725 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2726 | } | |
2727 | } | |
2728 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2729 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2730 | SETERRNO(0,0); |
2731 | } | |
14a5cf38 JH |
2732 | return len; |
2733 | } | |
abf9167d DM |
2734 | /* EINTR */ |
2735 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2736 | return -1; | |
14a5cf38 | 2737 | } |
b464bac0 | 2738 | /*NOTREACHED*/ |
9e353e3b NIS |
2739 | } |
2740 | ||
2741 | SSize_t | |
f62ce20a | 2742 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2743 | { |
97aff369 | 2744 | dVAR; |
abf9167d DM |
2745 | int fd; |
2746 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2747 | return -1; | |
2748 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2749 | #ifdef PERLIO_STD_SPECIAL |
2750 | if (fd == 1 || fd == 2) | |
2751 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2752 | #endif | |
14a5cf38 | 2753 | while (1) { |
de009b76 | 2754 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2755 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2756 | if (len < 0) { |
2757 | if (errno != EAGAIN) { | |
2758 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2759 | } | |
2760 | } | |
14a5cf38 JH |
2761 | return len; |
2762 | } | |
abf9167d DM |
2763 | /* EINTR */ |
2764 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2765 | return -1; | |
06da4f11 | 2766 | } |
1b6737cc | 2767 | /*NOTREACHED*/ |
9e353e3b NIS |
2768 | } |
2769 | ||
9e353e3b | 2770 | Off_t |
f62ce20a | 2771 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2772 | { |
96a5add6 AL |
2773 | PERL_UNUSED_CONTEXT; |
2774 | ||
14a5cf38 | 2775 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2776 | } |
2777 | ||
2556f95e GF |
2778 | |
2779 | IV | |
2376d97d | 2780 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2781 | { |
97aff369 | 2782 | dVAR; |
de009b76 | 2783 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2784 | int code = 0; |
168d5872 NIS |
2785 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2786 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2787 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2788 | return 0; | |
22569500 | 2789 | } |
93a8090d NIS |
2790 | } |
2791 | else { | |
93189314 | 2792 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2793 | return -1; |
2794 | } | |
14a5cf38 JH |
2795 | while (PerlLIO_close(fd) != 0) { |
2796 | if (errno != EINTR) { | |
2797 | code = -1; | |
2798 | break; | |
2799 | } | |
abf9167d DM |
2800 | /* EINTR */ |
2801 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2802 | return -1; | |
14a5cf38 JH |
2803 | } |
2804 | if (code == 0) { | |
2805 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2806 | } | |
2807 | return code; | |
9e353e3b NIS |
2808 | } |
2809 | ||
27da23d5 | 2810 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2811 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2812 | "unix", |
2813 | sizeof(PerlIOUnix), | |
2814 | PERLIO_K_RAW, | |
2815 | PerlIOUnix_pushed, | |
2376d97d | 2816 | PerlIOBase_popped, |
14a5cf38 | 2817 | PerlIOUnix_open, |
86e05cf2 | 2818 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2819 | NULL, |
2820 | PerlIOUnix_fileno, | |
71200d45 | 2821 | PerlIOUnix_dup, |
14a5cf38 JH |
2822 | PerlIOUnix_read, |
2823 | PerlIOBase_unread, | |
2824 | PerlIOUnix_write, | |
2825 | PerlIOUnix_seek, | |
2826 | PerlIOUnix_tell, | |
2827 | PerlIOUnix_close, | |
22569500 NIS |
2828 | PerlIOBase_noop_ok, /* flush */ |
2829 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2830 | PerlIOBase_eof, |
2831 | PerlIOBase_error, | |
2832 | PerlIOBase_clearerr, | |
2833 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2834 | NULL, /* get_base */ |
2835 | NULL, /* get_bufsiz */ | |
2836 | NULL, /* get_ptr */ | |
2837 | NULL, /* get_cnt */ | |
2838 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2839 | }; |
2840 | ||
2841 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2842 | /* |
71200d45 | 2843 | * stdio as a layer |
14a5cf38 | 2844 | */ |
9e353e3b | 2845 | |
313e59c8 NIS |
2846 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2847 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2848 | broken by the last second glibc 2.3 fix | |
2849 | */ | |
2850 | #define STDIO_BUFFER_WRITABLE | |
2851 | #endif | |
2852 | ||
2853 | ||
14a5cf38 JH |
2854 | typedef struct { |
2855 | struct _PerlIO base; | |
22569500 | 2856 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2857 | } PerlIOStdio; |
2858 | ||
2859 | IV | |
f62ce20a | 2860 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2861 | { |
96a5add6 AL |
2862 | PERL_UNUSED_CONTEXT; |
2863 | ||
c4420975 AL |
2864 | if (PerlIOValid(f)) { |
2865 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2866 | if (s) | |
2867 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2868 | } |
2869 | errno = EBADF; | |
2870 | return -1; | |
9e353e3b NIS |
2871 | } |
2872 | ||
766a733e | 2873 | char * |
14a5cf38 JH |
2874 | PerlIOStdio_mode(const char *mode, char *tmode) |
2875 | { | |
de009b76 | 2876 | char * const ret = tmode; |
a0625d38 SR |
2877 | if (mode) { |
2878 | while (*mode) { | |
2879 | *tmode++ = *mode++; | |
2880 | } | |
14a5cf38 | 2881 | } |
95005ad8 | 2882 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2883 | *tmode++ = 'b'; |
2884 | #endif | |
14a5cf38 JH |
2885 | *tmode = '\0'; |
2886 | return ret; | |
2887 | } | |
2888 | ||
4b803d04 | 2889 | IV |
2dc2558e | 2890 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2891 | { |
1fd8f4ce NIS |
2892 | PerlIO *n; |
2893 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2894 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2895 | if (toptab == tab) { |
2896 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2897 | PerlIO_pop(aTHX_ f); | |
2898 | return 0; | |
2899 | } else { | |
de009b76 | 2900 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2901 | char tmode[8]; |
2902 | FILE *stdio; | |
81428673 | 2903 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2904 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2905 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2906 | /* We never call down so do any pending stuff now */ | |
2907 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2908 | } |
1fd8f4ce NIS |
2909 | else { |
2910 | return -1; | |
2911 | } | |
2912 | } | |
14a5cf38 | 2913 | } |
2dc2558e | 2914 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2915 | } |
2916 | ||
22569500 | 2917 | |
9e353e3b | 2918 | PerlIO * |
4b069b44 | 2919 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2920 | { |
14a5cf38 JH |
2921 | dTHX; |
2922 | PerlIO *f = NULL; | |
2923 | if (stdio) { | |
22569500 | 2924 | PerlIOStdio *s; |
4b069b44 NIS |
2925 | if (!mode || !*mode) { |
2926 | /* We need to probe to see how we can open the stream | |
2927 | so start with read/write and then try write and read | |
2928 | we dup() so that we can fclose without loosing the fd. | |
2929 | ||
2930 | Note that the errno value set by a failing fdopen | |
2931 | varies between stdio implementations. | |
2932 | */ | |
de009b76 | 2933 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2934 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2935 | if (!f2) { |
a33cf58c | 2936 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2937 | } |
2938 | if (!f2) { | |
a33cf58c | 2939 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2940 | } |
2941 | if (!f2) { | |
2942 | /* Don't seem to be able to open */ | |
2943 | PerlLIO_close(fd); | |
2944 | return f; | |
2945 | } | |
2946 | fclose(f2); | |
22569500 | 2947 | } |
a0714e2c | 2948 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2949 | s = PerlIOSelf(f, PerlIOStdio); |
2950 | s->stdio = stdio; | |
c586124f | 2951 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2952 | } |
14a5cf38 JH |
2953 | } |
2954 | return f; | |
9e353e3b NIS |
2955 | } |
2956 | ||
2957 | PerlIO * | |
14a5cf38 JH |
2958 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2959 | IV n, const char *mode, int fd, int imode, | |
2960 | int perm, PerlIO *f, int narg, SV **args) | |
2961 | { | |
2962 | char tmode[8]; | |
d9dac8cd | 2963 | if (PerlIOValid(f)) { |
41188aa0 TC |
2964 | STRLEN len; |
2965 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 2966 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 2967 | FILE *stdio; |
41188aa0 | 2968 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 2969 | return NULL; |
1751d015 NIS |
2970 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
2971 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2972 | s->stdio); |
2973 | if (!s->stdio) | |
2974 | return NULL; | |
2975 | s->stdio = stdio; | |
1751d015 | 2976 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2977 | return f; |
2978 | } | |
2979 | else { | |
2980 | if (narg > 0) { | |
41188aa0 TC |
2981 | STRLEN len; |
2982 | const char * const path = SvPV_const(*args, len); | |
2983 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2984 | return NULL; |
3b6c1aba | 2985 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2986 | mode++; |
2987 | fd = PerlLIO_open3(path, imode, perm); | |
2988 | } | |
2989 | else { | |
95005ad8 GH |
2990 | FILE *stdio; |
2991 | bool appended = FALSE; | |
2992 | #ifdef __CYGWIN__ | |
2993 | /* Cygwin wants its 'b' early. */ | |
2994 | appended = TRUE; | |
2995 | mode = PerlIOStdio_mode(mode, tmode); | |
2996 | #endif | |
2997 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2998 | if (stdio) { |
6f0313ac JH |
2999 | if (!f) { |
3000 | f = PerlIO_allocate(aTHX); | |
3001 | } | |
95005ad8 GH |
3002 | if (!appended) |
3003 | mode = PerlIOStdio_mode(mode, tmode); | |
3004 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3005 | if (f) { | |
0f0f9e2b JH |
3006 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3007 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3008 | } else { | |
3009 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3010 | } |
3011 | return f; | |
3012 | } | |
3013 | else { | |
3014 | return NULL; | |
3015 | } | |
14a5cf38 JH |
3016 | } |
3017 | } | |
3018 | if (fd >= 0) { | |
3019 | FILE *stdio = NULL; | |
3020 | int init = 0; | |
3b6c1aba | 3021 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3022 | init = 1; |
3023 | mode++; | |
3024 | } | |
3025 | if (init) { | |
3026 | switch (fd) { | |
3027 | case 0: | |
3028 | stdio = PerlSIO_stdin; | |
3029 | break; | |
3030 | case 1: | |
3031 | stdio = PerlSIO_stdout; | |
3032 | break; | |
3033 | case 2: | |
3034 | stdio = PerlSIO_stderr; | |
3035 | break; | |
3036 | } | |
3037 | } | |
3038 | else { | |
3039 | stdio = PerlSIO_fdopen(fd, mode = | |
3040 | PerlIOStdio_mode(mode, tmode)); | |
3041 | } | |
3042 | if (stdio) { | |
d9dac8cd NIS |
3043 | if (!f) { |
3044 | f = PerlIO_allocate(aTHX); | |
3045 | } | |
a33cf58c | 3046 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3047 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3048 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3049 | } |
14a5cf38 JH |
3050 | return f; |
3051 | } | |
3052 | } | |
3053 | } | |
ee518936 | 3054 | return NULL; |
9e353e3b NIS |
3055 | } |
3056 | ||
1751d015 | 3057 | PerlIO * |
ecdeb87c | 3058 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3059 | { |
3060 | /* This assumes no layers underneath - which is what | |
3061 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3062 | */ | |
ecdeb87c | 3063 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3064 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3065 | const int fd = fileno(stdio); |
9217ff3f | 3066 | char mode[8]; |
ecdeb87c | 3067 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3068 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3069 | if (dfd >= 0) { |
3070 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3071 | goto set_this; | |
ecdeb87c NIS |
3072 | } |
3073 | else { | |
6f207bd3 | 3074 | NOOP; |
ecdeb87c NIS |
3075 | /* FIXME: To avoid messy error recovery if dup fails |
3076 | re-use the existing stdio as though flag was not set | |
3077 | */ | |
3078 | } | |
3079 | } | |
9217ff3f NIS |
3080 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3081 | set_this: | |
694c95cf | 3082 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3083 | if(stdio) { |
3084 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3085 | } | |
1751d015 NIS |
3086 | } |
3087 | return f; | |
3088 | } | |
3089 | ||
0d7a5398 NIS |
3090 | static int |
3091 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3092 | { | |
96a5add6 AL |
3093 | PERL_UNUSED_CONTEXT; |
3094 | ||
0d7a5398 | 3095 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3096 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3097 | */ |
ef8eacb8 AT |
3098 | # if defined(__UCLIBC__) |
3099 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3100 | f->__filedes = -1; | |
3101 | return 1; | |
3102 | # elif defined(__GLIBC__) | |
0d7a5398 | 3103 | /* There may be a better way for GLIBC: |
37725cdc | 3104 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3105 | */ |
3106 | f->_fileno = -1; | |
3107 | return 1; | |
bdea967c | 3108 | # elif defined(__sun) |
f5992bc4 | 3109 | PERL_UNUSED_ARG(f); |
cfedb851 | 3110 | return 0; |
0d7a5398 NIS |
3111 | # elif defined(__hpux) |
3112 | f->__fileH = 0xff; | |
3113 | f->__fileL = 0xff; | |
3114 | return 1; | |
9837d373 | 3115 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3116 | your platform does not have special entry try this one. |
9837d373 NIS |
3117 | [For OSF only have confirmation for Tru64 (alpha) |
3118 | but assume other OSFs will be similar.] | |
37725cdc | 3119 | */ |
9837d373 | 3120 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3121 | f->_file = -1; |
3122 | return 1; | |
3123 | # elif defined(__FreeBSD__) | |
3124 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3125 | - we could insert a dummy func in the _close function entry |
3126 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3127 | */ |
3128 | f->_file = -1; | |
0c49ea6a SU |
3129 | return 1; |
3130 | # elif defined(__OpenBSD__) | |
3131 | /* There may be a better way on OpenBSD: | |
3132 | - we could insert a dummy func in the _close function entry | |
3133 | f->_close = (int (*)(void *)) dummy_close; | |
3134 | */ | |
3135 | f->_file = -1; | |
0d7a5398 | 3136 | return 1; |
59ad941d IZ |
3137 | # elif defined(__EMX__) |
3138 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3139 | f->_handle = -1; | |
3140 | return 1; | |
0d7a5398 NIS |
3141 | # elif defined(__CYGWIN__) |
3142 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3143 | - we could insert a dummy func in the _close function entry |
3144 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3145 | */ |
3146 | f->_file = -1; | |
3147 | return 1; | |
3148 | # elif defined(WIN32) | |
378eeda7 | 3149 | # if defined(UNDER_CE) |
b475b3e6 JH |
3150 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3151 | structure at all | |
3152 | */ | |
0d7a5398 NIS |
3153 | # else |
3154 | f->_file = -1; | |
3155 | # endif | |
3156 | return 1; | |
3157 | # else | |
3158 | #if 0 | |
37725cdc | 3159 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3160 | (which isn't thread safe) instead |
37725cdc | 3161 | */ |
0d7a5398 NIS |
3162 | # error "Don't know how to set FILE.fileno on your platform" |
3163 | #endif | |
8772537c | 3164 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3165 | return 0; |
3166 | # endif | |
3167 | } | |
3168 | ||
1751d015 | 3169 | IV |
f62ce20a | 3170 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3171 | { |
c4420975 | 3172 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3173 | if (!stdio) { |
3174 | errno = EBADF; | |
3175 | return -1; | |
3176 | } | |
9217ff3f | 3177 | else { |
de009b76 | 3178 | const int fd = fileno(stdio); |
0d7a5398 | 3179 | int invalidate = 0; |
bbfd922f | 3180 | IV result = 0; |
1d791a44 | 3181 | int dupfd = -1; |
4ee39169 | 3182 | dSAVEDERRNO; |
a2e578da MHM |
3183 | #ifdef USE_ITHREADS |
3184 | dVAR; | |
3185 | #endif | |
0d7a5398 | 3186 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3187 | /* Socks lib overrides close() but stdio isn't linked to |
3188 | that library (though we are) - so we must call close() | |
3189 | on sockets on stdio's behalf. | |
3190 | */ | |
0d7a5398 NIS |
3191 | int optval; |
3192 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3193 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3194 | invalidate = 1; |
0d7a5398 | 3195 | #endif |
d8723f43 NC |
3196 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3197 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3198 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3199 | trying to close an already closed handle which somehow it still has | |
3200 | a reference to. (via.xs, I'm looking at you). */ | |
3201 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3202 | /* File descriptor still in use */ | |
0d7a5398 | 3203 | invalidate = 1; |
d8723f43 | 3204 | } |
0d7a5398 | 3205 | if (invalidate) { |
6b4ce6c8 AL |
3206 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3207 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3208 | return 0; | |
3209 | if (stdio == stdout || stdio == stderr) | |
3210 | return PerlIO_flush(f); | |
37725cdc NIS |
3211 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3212 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3213 | fileno slot of the FILE * | |
3214 | */ | |
bbfd922f | 3215 | result = PerlIO_flush(f); |
4ee39169 | 3216 | SAVE_ERRNO; |
6b4ce6c8 | 3217 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3218 | if (!invalidate) { |
9bab90c0 NC |
3219 | #ifdef USE_ITHREADS |
3220 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3221 | /* Right. We need a mutex here because for a brief while we |
3222 | will have the situation that fd is actually closed. Hence if | |
3223 | a second thread were to get into this block, its dup() would | |
3224 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3225 | Then if we get to the dup2() first, we blat the fd back |
3226 | (messing up its temporary as a side effect) only for it to | |
3227 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3228 | ||
3229 | /* There is, of course, a race condition, that any other thread | |
3230 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3231 | for the duration of this little manoeuvrer. Perhaps we |
3232 | should hold an IO mutex for the duration of every IO | |
3233 | operation if we know that invalidate doesn't work on this | |
3234 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3235 | |
3236 | Except that correctness trumps speed. | |
3237 | Advice from klortho #11912. */ | |
3238 | #endif | |
6b4ce6c8 | 3239 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3240 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3241 | if (dupfd < 0) { |
3242 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3243 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3244 | recover from here, or if closing this particular FILE * | |
3245 | is a good idea now. */ | |
3246 | } | |
3247 | #endif | |
3248 | } | |
94ccb807 JH |
3249 | } else { |
3250 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3251 | } |
0d7a5398 | 3252 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3253 | /* We treat error from stdio as success if we invalidated |
3254 | errno may NOT be expected EBADF | |
e8529473 NIS |
3255 | */ |
3256 | if (invalidate && result != 0) { | |
4ee39169 | 3257 | RESTORE_ERRNO; |
0d7a5398 | 3258 | result = 0; |
37725cdc | 3259 | } |
6b4ce6c8 AL |
3260 | #ifdef SOCKS5_VERSION_NAME |
3261 | /* in SOCKS' case, let close() determine return value */ | |
3262 | result = close(fd); | |
3263 | #endif | |
1d791a44 | 3264 | if (dupfd >= 0) { |
0d7a5398 | 3265 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3266 | PerlLIO_close(dupfd); |
711e8db2 | 3267 | #ifdef USE_ITHREADS |
9bab90c0 | 3268 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3269 | #endif |
9217ff3f NIS |
3270 | } |
3271 | return result; | |
37725cdc | 3272 | } |
1751d015 NIS |
3273 | } |
3274 | ||
9e353e3b | 3275 | SSize_t |
f62ce20a | 3276 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3277 | { |
97aff369 | 3278 | dVAR; |
abf9167d | 3279 | FILE * s; |
14a5cf38 | 3280 | SSize_t got = 0; |
abf9167d DM |
3281 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3282 | return -1; | |
3283 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3284 | for (;;) { |
3285 | if (count == 1) { | |
3286 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3287 | /* | |
3288 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3289 | * stdio does not do that for fread() | |
3290 | */ | |
de009b76 | 3291 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3292 | if (ch != EOF) { |
3293 | *buf = ch; | |
3294 | got = 1; | |
3295 | } | |
14a5cf38 | 3296 | } |
4d948241 NIS |
3297 | else |
3298 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3299 | if (got == 0 && PerlSIO_ferror(s)) |
3300 | got = -1; | |
42a7a32f | 3301 | if (got >= 0 || errno != EINTR) |
4d948241 | 3302 | break; |
abf9167d DM |
3303 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3304 | return -1; | |
42a7a32f | 3305 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3306 | } |
14a5cf38 | 3307 | return got; |
9e353e3b NIS |
3308 | } |
3309 | ||
3310 | SSize_t | |
f62ce20a | 3311 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3312 | { |
14a5cf38 | 3313 | SSize_t unread = 0; |
c4420975 | 3314 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3315 | |
313e59c8 | 3316 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3317 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3318 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3319 | STDCHAR *base = PerlIO_get_base(f); | |
3320 | SSize_t cnt = PerlIO_get_cnt(f); | |
3321 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3322 | SSize_t avail = ptr - base; | |
3323 | if (avail > 0) { | |
3324 | if (avail > count) { | |
3325 | avail = count; | |
3326 | } | |
3327 | ptr -= avail; | |
3328 | Move(buf-avail,ptr,avail,STDCHAR); | |
3329 | count -= avail; | |
3330 | unread += avail; | |
3331 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3332 | if (PerlSIO_feof(s) && unread >= 0) |
3333 | PerlSIO_clearerr(s); | |
3334 | } | |
3335 | } | |
313e59c8 NIS |
3336 | else |
3337 | #endif | |
3338 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3339 | /* We can get pointer to buffer but not its base |
3340 | Do ungetc() but check chars are ending up in the | |
3341 | buffer | |
3342 | */ | |
3343 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3344 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3345 | while (count > 0) { | |
de009b76 | 3346 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3347 | if (ungetc(ch,s) != ch) { |
3348 | /* ungetc did not work */ | |
3349 | break; | |
3350 | } | |
3351 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3352 | /* Did not change pointer as expected */ | |
3353 | fgetc(s); /* get char back again */ | |
3354 | break; | |
3355 | } | |
3356 | /* It worked ! */ | |
3357 | count--; | |
3358 | unread++; | |
93679785 NIS |
3359 | } |
3360 | } | |
3361 | ||
3362 | if (count > 0) { | |
3363 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3364 | } |
3365 | return unread; | |
9e353e3b NIS |
3366 | } |
3367 | ||
3368 | SSize_t | |
f62ce20a | 3369 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3370 | { |
97aff369 | 3371 | dVAR; |
4d948241 | 3372 | SSize_t got; |
abf9167d DM |
3373 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3374 | return -1; | |
4d948241 NIS |
3375 | for (;;) { |
3376 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3377 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3378 | if (got >= 0 || errno != EINTR) |
4d948241 | 3379 | break; |
abf9167d DM |
3380 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3381 | return -1; | |
42a7a32f | 3382 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3383 | } |
3384 | return got; | |
9e353e3b NIS |
3385 | } |
3386 | ||
94a175e1 | 3387 | IV |
f62ce20a | 3388 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3389 | { |
c4420975 | 3390 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3391 | PERL_UNUSED_CONTEXT; |
3392 | ||
94a175e1 | 3393 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3394 | } |
3395 | ||
3396 | Off_t | |
f62ce20a | 3397 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3398 | { |
c4420975 | 3399 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3400 | PERL_UNUSED_CONTEXT; |
3401 | ||
94a175e1 | 3402 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3403 | } |
3404 | ||
3405 | IV | |
f62ce20a | 3406 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3407 | { |
c4420975 | 3408 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3409 | PERL_UNUSED_CONTEXT; |
3410 | ||
14a5cf38 JH |
3411 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3412 | return PerlSIO_fflush(stdio); | |
3413 | } | |
3414 | else { | |
6f207bd3 | 3415 | NOOP; |
88b61e10 | 3416 | #if 0 |
14a5cf38 JH |
3417 | /* |
3418 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3419 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3420 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3421 | * layer read-to-read |
14a5cf38 JH |
3422 | */ |
3423 | /* | |
71200d45 | 3424 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3425 | */ |
4ee39169 | 3426 | dSAVE_ERRNO; |
14a5cf38 | 3427 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3428 | RESTORE_ERRNO; |
88b61e10 | 3429 | #endif |
14a5cf38 JH |
3430 | } |
3431 | return 0; | |
9e353e3b NIS |
3432 | } |
3433 | ||
3434 | IV | |
f62ce20a | 3435 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3436 | { |
96a5add6 AL |
3437 | PERL_UNUSED_CONTEXT; |
3438 | ||
14a5cf38 | 3439 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3440 | } |
3441 | ||
3442 | IV | |
f62ce20a | 3443 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3444 | { |
96a5add6 AL |
3445 | PERL_UNUSED_CONTEXT; |
3446 | ||
263df5f1 | 3447 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3448 | } |
3449 | ||
3450 | void | |
f62ce20a | 3451 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3452 | { |
96a5add6 AL |
3453 | PERL_UNUSED_CONTEXT; |
3454 | ||
14a5cf38 | 3455 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3456 | } |
3457 | ||
3458 | void | |
f62ce20a | 3459 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3460 | { |
96a5add6 AL |
3461 | PERL_UNUSED_CONTEXT; |
3462 | ||
9e353e3b | 3463 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3464 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3465 | #else |
bd61b366 | 3466 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3467 | #endif |
3468 | } | |
3469 | ||
3470 | #ifdef FILE_base | |
3471 | STDCHAR * | |
f62ce20a | 3472 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3473 | { |
c4420975 | 3474 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3475 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3476 | } |
3477 | ||
3478 | Size_t | |
f62ce20a | 3479 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3480 | { |
c4420975 | 3481 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3482 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3483 | } |
3484 | #endif | |
3485 | ||
3486 | #ifdef USE_STDIO_PTR | |
3487 | STDCHAR * | |
f62ce20a | 3488 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3489 | { |
c4420975 | 3490 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3491 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3492 | } |
3493 | ||
3494 | SSize_t | |
f62ce20a | 3495 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3496 | { |
c4420975 | 3497 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3498 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3499 | } |
3500 | ||
3501 | void | |
f62ce20a | 3502 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3503 | { |
c4420975 | 3504 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3505 | if (ptr != NULL) { |
9e353e3b | 3506 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3507 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3508 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3509 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3510 | #endif |
3511 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3512 | /* |
71200d45 | 3513 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3514 | */ |
3515 | return; | |
9e353e3b | 3516 | #endif |
22569500 | 3517 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3518 | PerlProc_abort(); |
22569500 | 3519 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3520 | } |
3521 | /* | |
71200d45 | 3522 | * Now (or only) set cnt |
14a5cf38 | 3523 | */ |
9e353e3b | 3524 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3525 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3526 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3527 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3528 | PerlSIO_set_ptr(stdio, |
3529 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3530 | cnt)); | |
22569500 | 3531 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3532 | PerlProc_abort(); |
22569500 NIS |
3533 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3534 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3535 | } |
3536 | ||
93679785 | 3537 | |
9e353e3b NIS |
3538 | #endif |
3539 | ||
93679785 NIS |
3540 | IV |
3541 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3542 | { | |
abf9167d | 3543 | FILE * stdio; |
93679785 | 3544 | int c; |
96a5add6 | 3545 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3546 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3547 | return -1; | |
3548 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3549 | |
93679785 NIS |
3550 | /* |
3551 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3552 | */ | |
3553 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3554 | if (PerlSIO_fflush(stdio) != 0) | |
3555 | return EOF; | |
3556 | } | |
f3be3723 BL |
3557 | for (;;) { |
3558 | c = PerlSIO_fgetc(stdio); | |
3559 | if (c != EOF) | |
3560 | break; | |
3561 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3562 | return EOF; | |
abf9167d DM |
3563 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3564 | return -1; | |
f3be3723 BL |
3565 | SETERRNO(0,0); |
3566 | } | |
93679785 NIS |
3567 | |
3568 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3569 | |
3570 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3571 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3572 | /* Fake ungetc() to the real buffer in case system's ungetc |
3573 | goes elsewhere | |
3574 | */ | |
3575 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3576 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3577 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3578 | if (ptr == base+1) { | |
3579 | *--ptr = (STDCHAR) c; | |
3580 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3581 | if (PerlSIO_feof(stdio)) | |
3582 | PerlSIO_clearerr(stdio); | |
3583 | return 0; | |
3584 | } | |
3585 | } | |
313e59c8 NIS |
3586 | else |
3587 | #endif | |
3588 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3589 | STDCHAR ch = c; |
3590 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3591 | return 0; | |
3592 | } | |
3593 | } | |
93679785 NIS |
3594 | #endif |
3595 | ||
3596 | #if defined(VMS) | |
3597 | /* An ungetc()d char is handled separately from the regular | |
3598 | * buffer, so we stuff it in the buffer ourselves. | |
3599 | * Should never get called as should hit code above | |
3600 | */ | |
bad9695d NIS |
3601 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3602 | (*stdio)->_cnt++; | |
93679785 NIS |
3603 | #else |
3604 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3605 | using ungetc(). |
93679785 NIS |
3606 | */ |
3607 | if (PerlSIO_ungetc(c, stdio) != c) | |
3608 | return EOF; | |
3609 | #endif | |
3610 | return 0; | |
3611 | } | |
3612 | ||
3613 | ||
3614 | ||
27da23d5 | 3615 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3616 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3617 | "stdio", |
3618 | sizeof(PerlIOStdio), | |
86e05cf2 | 3619 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3620 | PerlIOStdio_pushed, |
2376d97d | 3621 | PerlIOBase_popped, |
14a5cf38 | 3622 | PerlIOStdio_open, |
86e05cf2 | 3623 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3624 | NULL, |
3625 | PerlIOStdio_fileno, | |
71200d45 | 3626 | PerlIOStdio_dup, |
14a5cf38 JH |
3627 | PerlIOStdio_read, |
3628 | PerlIOStdio_unread, | |
3629 | PerlIOStdio_write, | |
3630 | PerlIOStdio_seek, | |
3631 | PerlIOStdio_tell, | |
3632 | PerlIOStdio_close, | |
3633 | PerlIOStdio_flush, | |
3634 | PerlIOStdio_fill, | |
3635 | PerlIOStdio_eof, | |
3636 | PerlIOStdio_error, | |
3637 | PerlIOStdio_clearerr, | |
3638 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3639 | #ifdef FILE_base |
14a5cf38 JH |
3640 | PerlIOStdio_get_base, |
3641 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3642 | #else |
14a5cf38 JH |
3643 | NULL, |
3644 | NULL, | |
9e353e3b NIS |
3645 | #endif |
3646 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3647 | PerlIOStdio_get_ptr, |
3648 | PerlIOStdio_get_cnt, | |
15b61c98 | 3649 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3650 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3651 | # else |
3652 | NULL, | |
3653 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3654 | #else | |
3655 | NULL, | |
14a5cf38 JH |
3656 | NULL, |
3657 | NULL, | |
15b61c98 | 3658 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3659 | }; |
3660 | ||
b9d6bf13 JH |
3661 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3662 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3663 | FILE * |
81428673 | 3664 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3665 | { |
e87a358a | 3666 | dTHX; |
81428673 NIS |
3667 | FILE *stdio = NULL; |
3668 | if (PerlIOValid(f)) { | |
3669 | char buf[8]; | |
3670 | PerlIO_flush(f); | |
3671 | if (!mode || !*mode) { | |
3672 | mode = PerlIO_modestr(f, buf); | |
3673 | } | |
3674 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3675 | if (stdio) { | |
3676 | PerlIOl *l = *f; | |
9f75cc58 | 3677 | PerlIO *f2; |
81428673 NIS |
3678 | /* De-link any lower layers so new :stdio sticks */ |
3679 | *f = NULL; | |
a0714e2c | 3680 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3681 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3682 | s->stdio = stdio; |
6b54a403 | 3683 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3684 | /* Link previous lower layers under new one */ |
3685 | *PerlIONext(f) = l; | |
3686 | } | |
3687 | else { | |
3688 | /* restore layers list */ | |
3689 | *f = l; | |
3690 | } | |
a33cf58c | 3691 | } |
14a5cf38 JH |
3692 | } |
3693 | return stdio; | |
9e353e3b NIS |
3694 | } |
3695 | ||
81428673 | 3696 | |
9e353e3b NIS |
3697 | FILE * |
3698 | PerlIO_findFILE(PerlIO *f) | |
3699 | { | |
14a5cf38 | 3700 | PerlIOl *l = *f; |
bbbc33d0 | 3701 | FILE *stdio; |
14a5cf38 JH |
3702 | while (l) { |
3703 | if (l->tab == &PerlIO_stdio) { | |
3704 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3705 | return s->stdio; | |
3706 | } | |
3707 | l = *PerlIONext(&l); | |
f7e7eb72 | 3708 | } |
4b069b44 | 3709 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3710 | /* However, we're not really exporting a FILE * to someone else (who |
3711 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3712 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3713 | descriptor. We have to do this, because if the loop above returns you |
3714 | the FILE *, then *it* didn't increase any reference count. So there's | |
3715 | only one way to be consistent. */ | |
3716 | stdio = PerlIO_exportFILE(f, NULL); | |
3717 | if (stdio) { | |
3718 | const int fd = fileno(stdio); | |
3719 | if (fd >= 0) | |
3720 | PerlIOUnix_refcnt_dec(fd); | |
3721 | } | |
3722 | return stdio; | |
9e353e3b NIS |
3723 | } |
3724 | ||
b9d6bf13 | 3725 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3726 | void |
3727 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3728 | { | |
27da23d5 | 3729 | dVAR; |
22569500 NIS |
3730 | PerlIOl *l; |
3731 | while ((l = *p)) { | |
3732 | if (l->tab == &PerlIO_stdio) { | |
3733 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3734 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3735 | const int fd = fileno(f); |
3736 | if (fd >= 0) | |
3737 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3738 | { |
3739 | dTHX; | |
3740 | PerlIO_pop(aTHX_ p); | |
3741 | } | |
22569500 NIS |
3742 | return; |
3743 | } | |
3744 | } | |
3745 | p = PerlIONext(p); | |
3746 | } | |
3747 | return; | |
9e353e3b NIS |
3748 | } |
3749 | ||
3750 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3751 | /* |
71200d45 | 3752 | * perlio buffer layer |
14a5cf38 | 3753 | */ |
9e353e3b | 3754 | |
5e2ab84b | 3755 | IV |
2dc2558e | 3756 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3757 | { |
14a5cf38 | 3758 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3759 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3760 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3761 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3762 | } | |
4b069b44 | 3763 | if (*PerlIONext(f)) { |
de009b76 | 3764 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3765 | if (posn != (Off_t) - 1) { |
3766 | b->posn = posn; | |
3767 | } | |
14a5cf38 | 3768 | } |
2dc2558e | 3769 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3770 | } |
3771 | ||
9e353e3b | 3772 | PerlIO * |
14a5cf38 JH |
3773 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3774 | IV n, const char *mode, int fd, int imode, int perm, | |
3775 | PerlIO *f, int narg, SV **args) | |
3776 | { | |
04892f78 | 3777 | if (PerlIOValid(f)) { |
14a5cf38 | 3778 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3779 | PerlIO_funcs *tab = |
3780 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3781 | if (tab && tab->Open) | |
3782 | next = | |
3783 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3784 | next, narg, args); | |
2dc2558e | 3785 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3786 | return NULL; |
3787 | } | |
3788 | } | |
3789 | else { | |
04892f78 | 3790 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3791 | int init = 0; |
3b6c1aba | 3792 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3793 | init = 1; |
3794 | /* | |
71200d45 | 3795 | * mode++; |
14a5cf38 JH |
3796 | */ |
3797 | } | |
67363c0d JH |
3798 | if (tab && tab->Open) |
3799 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3800 | f, narg, args); | |
3801 | else | |
3802 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3803 | if (f) { |
22569500 | 3804 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3805 | /* |
3806 | * if push fails during open, open fails. close will pop us. | |
3807 | */ | |
3808 | PerlIO_close (f); | |
3809 | return NULL; | |
3810 | } else { | |
3811 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3812 | if (init && fd == 2) { |
3813 | /* | |
3814 | * Initial stderr is unbuffered | |
3815 | */ | |
3816 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3817 | } | |
23b84778 IZ |
3818 | #ifdef PERLIO_USING_CRLF |
3819 | # ifdef PERLIO_IS_BINMODE_FD | |
3820 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3821 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3822 | else |
3823 | # endif | |
3824 | /* | |
3825 | * do something about failing setmode()? --jhi | |
3826 | */ | |
3827 | PerlLIO_setmode(fd, O_BINARY); | |
3828 | #endif | |
8c8488cd | 3829 | #ifdef VMS |
8c8488cd CB |
3830 | /* Enable line buffering with record-oriented regular files |
3831 | * so we don't introduce an extraneous record boundary when | |
3832 | * the buffer fills up. | |
3833 | */ | |
3834 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3835 | Stat_t st; | |
3836 | if (PerlLIO_fstat(fd, &st) == 0 | |
3837 | && S_ISREG(st.st_mode) | |
3838 | && (st.st_fab_rfm == FAB$C_VAR | |
3839 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3840 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3841 | } | |
3842 | } | |
3843 | #endif | |
14a5cf38 JH |
3844 | } |
3845 | } | |
ee518936 | 3846 | } |
14a5cf38 | 3847 | return f; |
9e353e3b NIS |
3848 | } |
3849 | ||
14a5cf38 JH |
3850 | /* |
3851 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3852 | * read or write state. For write state, we put the postponed data through |
3853 | * the next layers. For read state, we seek() the next layers to the | |
3854 | * offset given by current position in the buffer, and discard the buffer | |
3855 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3856 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3857 | */ |
9e353e3b | 3858 | IV |
f62ce20a | 3859 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3860 | { |
dcda55fc | 3861 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3862 | int code = 0; |
04892f78 | 3863 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3864 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3865 | /* | |
71200d45 | 3866 | * write() the buffer |
14a5cf38 | 3867 | */ |
de009b76 AL |
3868 | const STDCHAR *buf = b->buf; |
3869 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3870 | while (p < b->ptr) { |
3871 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3872 | if (count > 0) { | |
3873 | p += count; | |
3874 | } | |
3875 | else if (count < 0 || PerlIO_error(n)) { | |
3876 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3877 | code = -1; | |
3878 | break; | |
3879 | } | |
3880 | } | |
3881 | b->posn += (p - buf); | |
3882 | } | |
3883 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3884 | STDCHAR *buf = PerlIO_get_base(f); | |
3885 | /* | |
71200d45 | 3886 | * Note position change |
14a5cf38 JH |
3887 | */ |
3888 | b->posn += (b->ptr - buf); | |
3889 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3890 | /* We did not consume all of it - try and seek downstream to |
3891 | our logical position | |
14a5cf38 | 3892 | */ |
4b069b44 | 3893 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3894 | /* Reload n as some layers may pop themselves on seek */ |
3895 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3896 | } |
ba5c3fe9 | 3897 | else { |
4b069b44 NIS |
3898 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3899 | data is lost for good - so return saying "ok" having undone | |
3900 | the position adjust | |
3901 | */ | |
3902 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3903 | return code; |
3904 | } | |
14a5cf38 JH |
3905 | } |
3906 | } | |
3907 | b->ptr = b->end = b->buf; | |
3908 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3909 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3910 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3911 | code = -1; |
3912 | return code; | |
6f9d8c32 NIS |
3913 | } |
3914 | ||
93c2c2ec IZ |
3915 | /* This discards the content of the buffer after b->ptr, and rereads |
3916 | * the buffer from the position off in the layer downstream; here off | |
3917 | * is at offset corresponding to b->ptr - b->buf. | |
3918 | */ | |
06da4f11 | 3919 | IV |
f62ce20a | 3920 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3921 | { |
dcda55fc | 3922 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3923 | PerlIO *n = PerlIONext(f); |
3924 | SSize_t avail; | |
3925 | /* | |
4b069b44 NIS |
3926 | * Down-stream flush is defined not to loose read data so is harmless. |
3927 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3928 | */ |
93c2c2ec | 3929 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3930 | return -1; |
3931 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3932 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3933 | |
3934 | if (!b->buf) | |
22569500 | 3935 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3936 | |
0f0eef27 | 3937 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3938 | |
14a5cf38 | 3939 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3940 | |
3941 | if (!PerlIOValid(n)) { | |
3942 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3943 | return -1; | |
3944 | } | |
3945 | ||
14a5cf38 JH |
3946 | if (PerlIO_fast_gets(n)) { |
3947 | /* | |
04892f78 | 3948 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3949 | * ->Read() because that will loop till it gets what we asked for |
3950 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3951 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3952 | */ |
3953 | avail = PerlIO_get_cnt(n); | |
3954 | if (avail <= 0) { | |
3955 | avail = PerlIO_fill(n); | |
3956 | if (avail == 0) | |
3957 | avail = PerlIO_get_cnt(n); | |
3958 | else { | |
3959 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3960 | avail = 0; | |
3961 | } | |
3962 | } | |
3963 | if (avail > 0) { | |
3964 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3965 | const SSize_t cnt = avail; |
eb160463 | 3966 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3967 | avail = b->bufsiz; |
3968 | Copy(ptr, b->buf, avail, STDCHAR); | |
3969 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3970 | } | |
3971 | } | |
3972 | else { | |
3973 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3974 | } | |
3975 | if (avail <= 0) { | |
3976 | if (avail == 0) | |
3977 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3978 | else | |
3979 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3980 | return -1; | |
3981 | } | |
3982 | b->end = b->buf + avail; | |
3983 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3984 | return 0; | |
06da4f11 NIS |
3985 | } |
3986 | ||
6f9d8c32 | 3987 | SSize_t |
f62ce20a | 3988 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3989 | { |
04892f78 | 3990 | if (PerlIOValid(f)) { |
dcda55fc | 3991 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3992 | if (!b->ptr) |
3993 | PerlIO_get_base(f); | |
f62ce20a | 3994 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3995 | } |
3996 | return 0; | |
6f9d8c32 NIS |
3997 | } |
3998 | ||
9e353e3b | 3999 | SSize_t |
f62ce20a | 4000 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4001 | { |
14a5cf38 | 4002 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4003 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4004 | SSize_t unread = 0; |
4005 | SSize_t avail; | |
4006 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4007 | PerlIO_flush(f); | |
4008 | if (!b->buf) | |
4009 | PerlIO_get_base(f); | |
4010 | if (b->buf) { | |
4011 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4012 | /* | |
4013 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4014 | * which have been read back to buffer start |
14a5cf38 JH |
4015 | */ |
4016 | avail = (b->ptr - b->buf); | |
4017 | } | |
4018 | else { | |
4019 | /* | |
4020 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4021 | * unread |
14a5cf38 JH |
4022 | */ |
4023 | avail = b->bufsiz; | |
4024 | b->end = b->buf + avail; | |
4025 | b->ptr = b->end; | |
4026 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4027 | /* | |
71200d45 | 4028 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4029 | */ |
4030 | b->posn -= b->bufsiz; | |
4031 | } | |
94e529cc | 4032 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4033 | /* |
71200d45 | 4034 | * If we have space for more than count, just move count |
14a5cf38 JH |
4035 | */ |
4036 | avail = count; | |
4037 | } | |
4038 | if (avail > 0) { | |
4039 | b->ptr -= avail; | |
4040 | buf -= avail; | |
4041 | /* | |
4042 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4043 | * there |
14a5cf38 JH |
4044 | */ |
4045 | if (buf != b->ptr) { | |
4046 | Copy(buf, b->ptr, avail, STDCHAR); | |
4047 | } | |
4048 | count -= avail; | |
4049 | unread += avail; | |
4050 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4051 | } | |
4052 | } | |
93679785 NIS |
4053 | if (count > 0) { |
4054 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4055 | } | |
14a5cf38 | 4056 | return unread; |
760ac839 LW |
4057 | } |
4058 | ||
9e353e3b | 4059 | SSize_t |
f62ce20a | 4060 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4061 | { |
de009b76 | 4062 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4063 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4064 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4065 | Size_t written = 0; |
4066 | if (!b->buf) | |
4067 | PerlIO_get_base(f); | |
4068 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4069 | return 0; | |
0678cb22 NIS |
4070 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4071 | if (PerlIO_flush(f) != 0) { | |
4072 | return 0; | |
4073 | } | |
4074 | } | |
ee56a6b9 CS |
4075 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4076 | flushptr = buf + count; | |
4077 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4078 | --flushptr; | |
4079 | } | |
14a5cf38 JH |
4080 | while (count > 0) { |
4081 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4082 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4083 | avail = count; |
ee56a6b9 CS |
4084 | if (flushptr > buf && flushptr <= buf + avail) |
4085 | avail = flushptr - buf; | |
14a5cf38 | 4086 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4087 | if (avail) { |
4088 | Copy(buf, b->ptr, avail, STDCHAR); | |
4089 | count -= avail; | |
4090 | buf += avail; | |
4091 | written += avail; | |
4092 | b->ptr += avail; | |
4093 | if (buf == flushptr) | |
4094 | PerlIO_flush(f); | |
14a5cf38 JH |
4095 | } |
4096 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4097 | if (PerlIO_flush(f) == -1) |
4098 | return -1; | |
14a5cf38 JH |
4099 | } |
4100 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4101 | PerlIO_flush(f); | |
4102 | return written; | |
9e353e3b NIS |
4103 | } |
4104 | ||
94a175e1 | 4105 | IV |
f62ce20a | 4106 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4107 | { |
14a5cf38 JH |
4108 | IV code; |
4109 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4110 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4111 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4112 | if (code == 0) { | |
de009b76 | 4113 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4114 | b->posn = PerlIO_tell(PerlIONext(f)); |
4115 | } | |
9e353e3b | 4116 | } |
14a5cf38 | 4117 | return code; |
9e353e3b NIS |
4118 | } |
4119 | ||
4120 | Off_t | |
f62ce20a | 4121 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4122 | { |
dcda55fc | 4123 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4124 | /* |
71200d45 | 4125 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4126 | */ |
4127 | Off_t posn = b->posn; | |
37725cdc | 4128 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4129 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4130 | #if 1 | |
4131 | /* As O_APPEND files are normally shared in some sense it is better | |
4132 | to flush : | |
4133 | */ | |
4134 | PerlIO_flush(f); | |
4135 | #else | |
37725cdc | 4136 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4137 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4138 | #endif | |
4139 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4140 | } | |
14a5cf38 JH |
4141 | if (b->buf) { |
4142 | /* | |
71200d45 | 4143 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4144 | */ |
4145 | posn += (b->ptr - b->buf); | |
4146 | } | |
4147 | return posn; | |
9e353e3b NIS |
4148 | } |
4149 | ||
4150 | IV | |
44798d05 NIS |
4151 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4152 | { | |
de009b76 AL |
4153 | const IV code = PerlIOBase_popped(aTHX_ f); |
4154 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4155 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4156 | Safefree(b->buf); | |
4157 | } | |
dcda55fc | 4158 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4159 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4160 | return code; | |
4161 | } | |
4162 | ||
4163 | IV | |
f62ce20a | 4164 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4165 | { |
de009b76 AL |
4166 | const IV code = PerlIOBase_close(aTHX_ f); |
4167 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4168 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4169 | Safefree(b->buf); |
14a5cf38 | 4170 | } |
dcda55fc | 4171 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4172 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4173 | return code; | |
760ac839 LW |
4174 | } |
4175 | ||
9e353e3b | 4176 | STDCHAR * |
f62ce20a | 4177 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4178 | { |
dcda55fc | 4179 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4180 | if (!b->buf) |
4181 | PerlIO_get_base(f); | |
4182 | return b->ptr; | |
9e353e3b NIS |
4183 | } |
4184 | ||
05d1247b | 4185 | SSize_t |
f62ce20a | 4186 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4187 | { |
dcda55fc | 4188 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4189 | if (!b->buf) |
4190 | PerlIO_get_base(f); | |
4191 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4192 | return (b->end - b->ptr); | |
4193 | return 0; | |
9e353e3b NIS |
4194 | } |
4195 | ||
4196 | STDCHAR * | |
f62ce20a | 4197 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4198 | { |
dcda55fc | 4199 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4200 | PERL_UNUSED_CONTEXT; |
4201 | ||
14a5cf38 JH |
4202 | if (!b->buf) { |
4203 | if (!b->bufsiz) | |
1810cd7c | 4204 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4205 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4206 | if (!b->buf) { |
4207 | b->buf = (STDCHAR *) & b->oneword; | |
4208 | b->bufsiz = sizeof(b->oneword); | |
4209 | } | |
dcda55fc | 4210 | b->end = b->ptr = b->buf; |
06da4f11 | 4211 | } |
14a5cf38 | 4212 | return b->buf; |
9e353e3b NIS |
4213 | } |
4214 | ||
4215 | Size_t | |
f62ce20a | 4216 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4217 | { |
dcda55fc | 4218 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4219 | if (!b->buf) |
4220 | PerlIO_get_base(f); | |
4221 | return (b->end - b->buf); | |
9e353e3b NIS |
4222 | } |
4223 | ||
4224 | void | |
f62ce20a | 4225 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4226 | { |
dcda55fc | 4227 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4228 | #ifndef DEBUGGING |
4229 | PERL_UNUSED_ARG(cnt); | |
4230 | #endif | |
14a5cf38 JH |
4231 | if (!b->buf) |
4232 | PerlIO_get_base(f); | |
4233 | b->ptr = ptr; | |
b727803b RGS |
4234 | assert(PerlIO_get_cnt(f) == cnt); |
4235 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4236 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4237 | } |
4238 | ||
71200d45 | 4239 | PerlIO * |
ecdeb87c | 4240 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4241 | { |
ecdeb87c | 4242 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4243 | } |
4244 | ||
4245 | ||
4246 | ||
27da23d5 | 4247 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4248 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4249 | "perlio", |
4250 | sizeof(PerlIOBuf), | |
86e05cf2 | 4251 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4252 | PerlIOBuf_pushed, |
44798d05 | 4253 | PerlIOBuf_popped, |
14a5cf38 | 4254 | PerlIOBuf_open, |
86e05cf2 | 4255 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4256 | NULL, |
4257 | PerlIOBase_fileno, | |
71200d45 | 4258 | PerlIOBuf_dup, |
14a5cf38 JH |
4259 | PerlIOBuf_read, |
4260 | PerlIOBuf_unread, | |
4261 | PerlIOBuf_write, | |
4262 | PerlIOBuf_seek, | |
4263 | PerlIOBuf_tell, | |
4264 | PerlIOBuf_close, | |
4265 | PerlIOBuf_flush, | |
4266 | PerlIOBuf_fill, | |
4267 | PerlIOBase_eof, | |
4268 | PerlIOBase_error, | |
4269 | PerlIOBase_clearerr, | |
4270 | PerlIOBase_setlinebuf, | |
4271 | PerlIOBuf_get_base, | |
4272 | PerlIOBuf_bufsiz, | |
4273 | PerlIOBuf_get_ptr, | |
4274 | PerlIOBuf_get_cnt, | |
4275 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4276 | }; |
4277 | ||
66ecd56b | 4278 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4279 | /* |
71200d45 | 4280 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4281 | */ |
5e2ab84b NIS |
4282 | |
4283 | IV | |
f62ce20a | 4284 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4285 | { |
14a5cf38 | 4286 | /* |
71200d45 | 4287 | * Should never happen |
14a5cf38 JH |
4288 | */ |
4289 | PerlIO_flush(f); | |
4290 | return 0; | |
5e2ab84b NIS |
4291 | } |
4292 | ||
4293 | IV | |
f62ce20a | 4294 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4295 | { |
14a5cf38 | 4296 | /* |
71200d45 | 4297 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4298 | */ |
4299 | PerlIO_flush(f); | |
4300 | return PerlIO_close(f); | |
5e2ab84b NIS |
4301 | } |
4302 | ||
94a175e1 | 4303 | IV |
f62ce20a | 4304 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4305 | { |
14a5cf38 | 4306 | /* |
71200d45 | 4307 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4308 | */ |
4309 | PerlIO_flush(f); | |
4310 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4311 | } |
4312 | ||
4313 | ||
4314 | IV | |
f62ce20a | 4315 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4316 | { |
dcda55fc | 4317 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4318 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4319 | Safefree(b->buf); |
14a5cf38 JH |
4320 | b->buf = NULL; |
4321 | } | |
4322 | PerlIO_pop(aTHX_ f); | |
4323 | return 0; | |
5e2ab84b NIS |
4324 | } |
4325 | ||
4326 | void | |
f62ce20a | 4327 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4328 | { |
14a5cf38 JH |
4329 | if (cnt <= 0) { |
4330 | PerlIO_flush(f); | |
4331 | } | |
4332 | else { | |
f62ce20a | 4333 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4334 | } |
5e2ab84b NIS |
4335 | } |
4336 | ||
4337 | IV | |
2dc2558e | 4338 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4339 | { |
de009b76 | 4340 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4341 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4342 | /* |
71200d45 NIS |
4343 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4344 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4345 | */ |
4346 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4347 | (PerlIOBase(PerlIONext(f))-> | |
4348 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4349 | return code; | |
5e2ab84b NIS |
4350 | } |
4351 | ||
4352 | SSize_t | |
f62ce20a | 4353 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4354 | { |
14a5cf38 JH |
4355 | SSize_t avail = PerlIO_get_cnt(f); |
4356 | SSize_t got = 0; | |
94e529cc | 4357 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4358 | avail = count; |
4359 | if (avail > 0) | |
f62ce20a | 4360 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4361 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4362 | const SSize_t more = |
14a5cf38 JH |
4363 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4364 | if (more >= 0 || got == 0) | |
4365 | got += more; | |
4366 | } | |
4367 | return got; | |
5e2ab84b NIS |
4368 | } |
4369 | ||
27da23d5 | 4370 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4371 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4372 | "pending", |
4373 | sizeof(PerlIOBuf), | |
86e05cf2 | 4374 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4375 | PerlIOPending_pushed, |
44798d05 | 4376 | PerlIOBuf_popped, |
14a5cf38 | 4377 | NULL, |
86e05cf2 | 4378 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4379 | NULL, |
4380 | PerlIOBase_fileno, | |
71200d45 | 4381 | PerlIOBuf_dup, |
14a5cf38 JH |
4382 | PerlIOPending_read, |
4383 | PerlIOBuf_unread, | |
4384 | PerlIOBuf_write, | |
4385 | PerlIOPending_seek, | |
4386 | PerlIOBuf_tell, | |
4387 | PerlIOPending_close, | |
4388 | PerlIOPending_flush, | |
4389 | PerlIOPending_fill, | |
4390 | PerlIOBase_eof, | |
4391 | PerlIOBase_error, | |
4392 | PerlIOBase_clearerr, | |
4393 | PerlIOBase_setlinebuf, | |
4394 | PerlIOBuf_get_base, | |
4395 | PerlIOBuf_bufsiz, | |
4396 | PerlIOBuf_get_ptr, | |
4397 | PerlIOBuf_get_cnt, | |
4398 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4399 | }; |
4400 | ||
4401 | ||
4402 | ||
4403 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4404 | /* |
4405 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4406 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4407 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4408 | * |
4409 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4410 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4411 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4412 | * that it ends at c->nl; these two cases can be distinguished by | |
4413 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4414 | * _unread() and _flush() calls. | |
4415 | * It only matters for read operations. | |
66ecd56b NIS |
4416 | */ |
4417 | ||
14a5cf38 | 4418 | typedef struct { |
22569500 NIS |
4419 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4420 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4421 | * buffer */ |
99efab12 NIS |
4422 | } PerlIOCrlf; |
4423 | ||
ff1e3883 JD |
4424 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4425 | * Otherwise the :crlf layer would always revert back to | |
4426 | * raw mode. | |
4427 | */ | |
4428 | static void | |
4429 | S_inherit_utf8_flag(PerlIO *f) | |
4430 | { | |
4431 | PerlIO *g = PerlIONext(f); | |
4432 | if (PerlIOValid(g)) { | |
4433 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4434 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4435 | } | |
4436 | } | |
4437 | } | |
4438 | ||
f5b9d040 | 4439 | IV |
2dc2558e | 4440 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4441 | { |
14a5cf38 JH |
4442 | IV code; |
4443 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4444 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4445 | #if 0 |
14a5cf38 | 4446 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4447 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4448 | PerlIOBase(f)->flags); |
5e2ab84b | 4449 | #endif |
8229d19f | 4450 | { |
5da08ab0 LT |
4451 | /* If the old top layer is a CRLF layer, reactivate it (if |
4452 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4453 | PerlIO *g = PerlIONext(f); |
7826b36f | 4454 | if (PerlIOValid(g)) { |
8229d19f JH |
4455 | PerlIOl *b = PerlIOBase(g); |
4456 | if (b && b->tab == &PerlIO_crlf) { | |
4457 | if (!(b->flags & PERLIO_F_CRLF)) | |
4458 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4459 | S_inherit_utf8_flag(g); |
8229d19f JH |
4460 | PerlIO_pop(aTHX_ f); |
4461 | return code; | |
7826b36f | 4462 | } |
8229d19f JH |
4463 | } |
4464 | } | |
ff1e3883 | 4465 | S_inherit_utf8_flag(f); |
14a5cf38 | 4466 | return code; |
f5b9d040 NIS |
4467 | } |
4468 | ||
4469 | ||
99efab12 | 4470 | SSize_t |
f62ce20a | 4471 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4472 | { |
dcda55fc | 4473 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4474 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4475 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4476 | c->nl = NULL; |
4477 | } | |
4478 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4479 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4480 | else { |
4481 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4482 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4483 | SSize_t unread = 0; | |
4484 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4485 | PerlIO_flush(f); | |
4486 | if (!b->buf) | |
4487 | PerlIO_get_base(f); | |
4488 | if (b->buf) { | |
4489 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4490 | b->end = b->ptr = b->buf + b->bufsiz; | |
4491 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4492 | b->posn -= b->bufsiz; | |
4493 | } | |
4494 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4495 | const int ch = *--buf; |
14a5cf38 JH |
4496 | if (ch == '\n') { |
4497 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4498 | *--(b->ptr) = NATIVE_0xa; |
4499 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4500 | unread++; |
4501 | count--; | |
4502 | } | |
4503 | else { | |
93c2c2ec | 4504 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4505 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4506 | '\r' */ | |
93c2c2ec IZ |
4507 | unread++; |
4508 | count--; | |
14a5cf38 JH |
4509 | } |
4510 | } | |
4511 | else { | |
4512 | *--(b->ptr) = ch; | |
4513 | unread++; | |
4514 | count--; | |
4515 | } | |
4516 | } | |
4517 | } | |
ec1da995 LT |
4518 | if (count > 0) |
4519 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4520 | return unread; |
4521 | } | |
99efab12 NIS |
4522 | } |
4523 | ||
93c2c2ec | 4524 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4525 | SSize_t |
f62ce20a | 4526 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4527 | { |
dcda55fc | 4528 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4529 | if (!b->buf) |
4530 | PerlIO_get_base(f); | |
4531 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4532 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4533 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4534 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4535 | scan: |
76e6dc3a | 4536 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4537 | nl++; |
76e6dc3a | 4538 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4539 | test: |
4540 | if (nl + 1 < b->end) { | |
76e6dc3a | 4541 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4542 | *nl = '\n'; |
4543 | c->nl = nl; | |
4544 | } | |
4545 | else { | |
4546 | /* | |
71200d45 | 4547 | * Not CR,LF but just CR |
14a5cf38 JH |
4548 | */ |
4549 | nl++; | |
4550 | goto scan; | |
4551 | } | |
4552 | } | |
4553 | else { | |
4554 | /* | |
71200d45 | 4555 | * Blast - found CR as last char in buffer |
14a5cf38 | 4556 | */ |
e87a358a | 4557 | |
14a5cf38 JH |
4558 | if (b->ptr < nl) { |
4559 | /* | |
4560 | * They may not care, defer work as long as | |
71200d45 | 4561 | * possible |
14a5cf38 | 4562 | */ |
a0d1d361 | 4563 | c->nl = nl; |
14a5cf38 JH |
4564 | return (nl - b->ptr); |
4565 | } | |
4566 | else { | |
4567 | int code; | |
22569500 | 4568 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4569 | * flush() is concerned */ |
22569500 | 4570 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4571 | /* Note as we have moved buf up flush's |
4572 | posn += ptr-buf | |
4573 | will naturally make posn point at CR | |
4574 | */ | |
22569500 NIS |
4575 | b->bufsiz--; /* Buffer is thus smaller */ |
4576 | code = PerlIO_fill(f); /* Fetch some more */ | |
4577 | b->bufsiz++; /* Restore size for next time */ | |
4578 | b->buf--; /* Point at space */ | |
4579 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4580 | * off */ |
76e6dc3a | 4581 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4582 | if (code == 0) |
22569500 | 4583 | goto test; /* fill() call worked */ |
14a5cf38 | 4584 | /* |
71200d45 | 4585 | * CR at EOF - just fall through |
14a5cf38 | 4586 | */ |
a0d1d361 | 4587 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4588 | } |
4589 | } | |
4590 | } | |
4591 | } | |
4592 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4593 | } | |
4594 | return 0; | |
99efab12 NIS |
4595 | } |
4596 | ||
4597 | void | |
f62ce20a | 4598 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4599 | { |
dcda55fc AL |
4600 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4601 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4602 | if (!b->buf) |
4603 | PerlIO_get_base(f); | |
4604 | if (!ptr) { | |
a0d1d361 | 4605 | if (c->nl) { |
14a5cf38 | 4606 | ptr = c->nl + 1; |
76e6dc3a | 4607 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4608 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4609 | ptr--; |
4610 | } | |
4611 | } | |
14a5cf38 JH |
4612 | else { |
4613 | ptr = b->end; | |
14a5cf38 JH |
4614 | } |
4615 | ptr -= cnt; | |
4616 | } | |
4617 | else { | |
6f207bd3 | 4618 | NOOP; |
3b4bd3fd | 4619 | #if 0 |
14a5cf38 | 4620 | /* |
71200d45 | 4621 | * Test code - delete when it works ... |
14a5cf38 | 4622 | */ |
3b4bd3fd | 4623 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4624 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4625 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4626 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4627 | chk--; |
22569500 | 4628 | } |
14a5cf38 JH |
4629 | chk -= cnt; |
4630 | ||
a0d1d361 | 4631 | if (ptr != chk ) { |
99ef548b | 4632 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4633 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4634 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4635 | } |
99ef548b | 4636 | #endif |
14a5cf38 JH |
4637 | } |
4638 | if (c->nl) { | |
4639 | if (ptr > c->nl) { | |
4640 | /* | |
71200d45 | 4641 | * They have taken what we lied about |
14a5cf38 | 4642 | */ |
76e6dc3a | 4643 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4644 | c->nl = NULL; |
4645 | ptr++; | |
4646 | } | |
4647 | } | |
4648 | b->ptr = ptr; | |
4649 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4650 | } |
4651 | ||
4652 | SSize_t | |
f62ce20a | 4653 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4654 | { |
14a5cf38 | 4655 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4656 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4657 | else { |
dcda55fc | 4658 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4659 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4660 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4661 | if (!b->buf) |
4662 | PerlIO_get_base(f); | |
4663 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4664 | return 0; | |
4665 | while (buf < ebuf) { | |
dcda55fc | 4666 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4667 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4668 | while (buf < ebuf && b->ptr < eptr) { | |
4669 | if (*buf == '\n') { | |
4670 | if ((b->ptr + 2) > eptr) { | |
4671 | /* | |
71200d45 | 4672 | * Not room for both |
14a5cf38 JH |
4673 | */ |
4674 | PerlIO_flush(f); | |
4675 | break; | |
4676 | } | |
4677 | else { | |
76e6dc3a KW |
4678 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4679 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4680 | buf++; |
4681 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4682 | PerlIO_flush(f); | |
4683 | break; | |
4684 | } | |
4685 | } | |
4686 | } | |
4687 | else { | |
dcda55fc | 4688 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4689 | } |
4690 | if (b->ptr >= eptr) { | |
4691 | PerlIO_flush(f); | |
4692 | break; | |
4693 | } | |
4694 | } | |
4695 | } | |
4696 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4697 | PerlIO_flush(f); | |
4698 | return (buf - (STDCHAR *) vbuf); | |
4699 | } | |
99efab12 NIS |
4700 | } |
4701 | ||
4702 | IV | |
f62ce20a | 4703 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4704 | { |
dcda55fc | 4705 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4706 | if (c->nl) { |
76e6dc3a | 4707 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4708 | c->nl = NULL; |
4709 | } | |
f62ce20a | 4710 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4711 | } |
4712 | ||
86e05cf2 NIS |
4713 | IV |
4714 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4715 | { | |
4716 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4717 | /* In text mode - flush any pending stuff and flip it */ | |
4718 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4719 | #ifndef PERLIO_USING_CRLF | |
4720 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4721 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4722 | #endif |
4723 | } | |
4724 | return 0; | |
4725 | } | |
4726 | ||
27da23d5 | 4727 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4728 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4729 | "crlf", |
4730 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4731 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4732 | PerlIOCrlf_pushed, |
44798d05 | 4733 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4734 | PerlIOBuf_open, |
86e05cf2 | 4735 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4736 | NULL, |
4737 | PerlIOBase_fileno, | |
71200d45 | 4738 | PerlIOBuf_dup, |
de009b76 | 4739 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4740 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4741 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4742 | PerlIOBuf_seek, |
4743 | PerlIOBuf_tell, | |
4744 | PerlIOBuf_close, | |
4745 | PerlIOCrlf_flush, | |
4746 | PerlIOBuf_fill, | |
4747 | PerlIOBase_eof, | |
4748 | PerlIOBase_error, | |
4749 | PerlIOBase_clearerr, | |
4750 | PerlIOBase_setlinebuf, | |
4751 | PerlIOBuf_get_base, | |
4752 | PerlIOBuf_bufsiz, | |
4753 | PerlIOBuf_get_ptr, | |
4754 | PerlIOCrlf_get_cnt, | |
4755 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4756 | }; |
4757 | ||
9e353e3b | 4758 | PerlIO * |
e87a358a | 4759 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4760 | { |
97aff369 | 4761 | dVAR; |
a1ea730d | 4762 | if (!PL_perlio) { |
14a5cf38 JH |
4763 | PerlIO_stdstreams(aTHX); |
4764 | } | |
303f2dc3 | 4765 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4766 | } |
4767 | ||
9e353e3b | 4768 | PerlIO * |
e87a358a | 4769 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4770 | { |
97aff369 | 4771 | dVAR; |
a1ea730d | 4772 | if (!PL_perlio) { |
14a5cf38 JH |
4773 | PerlIO_stdstreams(aTHX); |
4774 | } | |
303f2dc3 | 4775 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4776 | } |
4777 | ||
9e353e3b | 4778 | PerlIO * |
e87a358a | 4779 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4780 | { |
97aff369 | 4781 | dVAR; |
a1ea730d | 4782 | if (!PL_perlio) { |
14a5cf38 JH |
4783 | PerlIO_stdstreams(aTHX); |
4784 | } | |
303f2dc3 | 4785 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4786 | } |
4787 | ||
4788 | /*--------------------------------------------------------------------------------------*/ | |
4789 | ||
9e353e3b NIS |
4790 | char * |
4791 | PerlIO_getname(PerlIO *f, char *buf) | |
4792 | { | |
a15cef0c | 4793 | #ifdef VMS |
dbf7dff6 | 4794 | dTHX; |
73d840c0 | 4795 | char *name = NULL; |
7659f319 | 4796 | bool exported = FALSE; |
14a5cf38 | 4797 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4798 | if (!stdio) { |
4799 | stdio = PerlIO_exportFILE(f,0); | |
4800 | exported = TRUE; | |
4801 | } | |
4802 | if (stdio) { | |
14a5cf38 | 4803 | name = fgetname(stdio, buf); |
7659f319 CB |
4804 | if (exported) PerlIO_releaseFILE(f,stdio); |
4805 | } | |
73d840c0 | 4806 | return name; |
a15cef0c | 4807 | #else |
8772537c AL |
4808 | PERL_UNUSED_ARG(f); |
4809 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4810 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4811 | return NULL; |
a15cef0c | 4812 | #endif |
9e353e3b NIS |
4813 | } |
4814 | ||
4815 | ||
4816 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4817 | /* |
4818 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4819 | * terms of above |
14a5cf38 | 4820 | */ |
9e353e3b | 4821 | |
e87a358a NIS |
4822 | #undef PerlIO_fdopen |
4823 | PerlIO * | |
4824 | PerlIO_fdopen(int fd, const char *mode) | |
4825 | { | |
4826 | dTHX; | |
bd61b366 | 4827 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4828 | } |
4829 | ||
4830 | #undef PerlIO_open | |
4831 | PerlIO * | |
4832 | PerlIO_open(const char *path, const char *mode) | |
4833 | { | |
4834 | dTHX; | |
42d9b98d | 4835 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4836 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4837 | } |
4838 | ||
4839 | #undef Perlio_reopen | |
4840 | PerlIO * | |
4841 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4842 | { | |
4843 | dTHX; | |
42d9b98d | 4844 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4845 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4846 | } |
4847 | ||
9e353e3b | 4848 | #undef PerlIO_getc |
6f9d8c32 | 4849 | int |
9e353e3b | 4850 | PerlIO_getc(PerlIO *f) |
760ac839 | 4851 | { |
e87a358a | 4852 | dTHX; |
14a5cf38 | 4853 | STDCHAR buf[1]; |
de009b76 | 4854 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4855 | return (unsigned char) buf[0]; |
4856 | } | |
4857 | return EOF; | |
313ca112 NIS |
4858 | } |
4859 | ||
4860 | #undef PerlIO_ungetc | |
4861 | int | |
4862 | PerlIO_ungetc(PerlIO *f, int ch) | |
4863 | { | |
e87a358a | 4864 | dTHX; |
14a5cf38 JH |
4865 | if (ch != EOF) { |
4866 | STDCHAR buf = ch; | |
4867 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4868 | return ch; | |
4869 | } | |
4870 | return EOF; | |
760ac839 LW |
4871 | } |
4872 | ||
9e353e3b NIS |
4873 | #undef PerlIO_putc |
4874 | int | |
4875 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4876 | { |
e87a358a | 4877 | dTHX; |
14a5cf38 JH |
4878 | STDCHAR buf = ch; |
4879 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4880 | } |
4881 | ||
9e353e3b | 4882 | #undef PerlIO_puts |
760ac839 | 4883 | int |
9e353e3b | 4884 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4885 | { |
e87a358a | 4886 | dTHX; |
dcda55fc | 4887 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4888 | } |
4889 | ||
4890 | #undef PerlIO_rewind | |
4891 | void | |
c78749f2 | 4892 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4893 | { |
e87a358a | 4894 | dTHX; |
14a5cf38 JH |
4895 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4896 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4897 | } |
4898 | ||
4899 | #undef PerlIO_vprintf | |
4900 | int | |
4901 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4902 | { | |
14a5cf38 | 4903 | dTHX; |
53ce71d3 | 4904 | SV * sv; |
b83604b4 | 4905 | const char *s; |
14a5cf38 JH |
4906 | STRLEN len; |
4907 | SSize_t wrote; | |
2cc61e15 | 4908 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4909 | va_list apc; |
4910 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4911 | sv = vnewSVpvf(fmt, &apc); |
2cc61e15 | 4912 | #else |
53ce71d3 | 4913 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4914 | #endif |
b83604b4 | 4915 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4916 | wrote = PerlIO_write(f, s, len); |
4917 | SvREFCNT_dec(sv); | |
4918 | return wrote; | |
760ac839 LW |
4919 | } |
4920 | ||
4921 | #undef PerlIO_printf | |
6f9d8c32 | 4922 | int |
14a5cf38 | 4923 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4924 | { |
14a5cf38 JH |
4925 | va_list ap; |
4926 | int result; | |
4927 | va_start(ap, fmt); | |
4928 | result = PerlIO_vprintf(f, fmt, ap); | |
4929 | va_end(ap); | |
4930 | return result; | |
760ac839 LW |
4931 | } |
4932 | ||
4933 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4934 | int |
14a5cf38 | 4935 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4936 | { |
e87a358a | 4937 | dTHX; |
14a5cf38 JH |
4938 | va_list ap; |
4939 | int result; | |
4940 | va_start(ap, fmt); | |
4941 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
4942 | va_end(ap); | |
4943 | return result; | |
760ac839 LW |
4944 | } |
4945 | ||
4946 | #undef PerlIO_tmpfile | |
4947 | PerlIO * | |
c78749f2 | 4948 | PerlIO_tmpfile(void) |
760ac839 | 4949 | { |
dbf7dff6 | 4950 | #ifndef WIN32 |
2941a2e1 | 4951 | dTHX; |
dbf7dff6 | 4952 | #endif |
2941a2e1 | 4953 | PerlIO *f = NULL; |
2941a2e1 | 4954 | #ifdef WIN32 |
de009b76 | 4955 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
4956 | if (fd >= 0) |
4957 | f = PerlIO_fdopen(fd, "w+b"); | |
4958 | #else /* WIN32 */ | |
460c8493 | 4959 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
4960 | int fd = -1; |
4961 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 4962 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 4963 | SV * sv = NULL; |
2941a2e1 JH |
4964 | /* |
4965 | * I have no idea how portable mkstemp() is ... NI-S | |
4966 | */ | |
7299ca58 | 4967 | if (tmpdir && *tmpdir) { |
0b99e986 | 4968 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 4969 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
4970 | sv_catpv(sv, tempname + 4); |
4971 | fd = mkstemp(SvPVX(sv)); | |
4972 | } | |
4973 | if (fd < 0) { | |
e40f8e80 | 4974 | SvREFCNT_dec(sv); |
7299ca58 | 4975 | sv = NULL; |
0b99e986 RGS |
4976 | /* else we try /tmp */ |
4977 | fd = mkstemp(tempname); | |
4978 | } | |
b7561fc9 BF |
4979 | if (fd < 0) { |
4980 | /* Try cwd */ | |
4981 | sv = newSVpvs("."); | |
4982 | sv_catpv(sv, tempname + 4); | |
4983 | fd = mkstemp(SvPVX(sv)); | |
4984 | } | |
2941a2e1 JH |
4985 | if (fd >= 0) { |
4986 | f = PerlIO_fdopen(fd, "w+"); | |
4987 | if (f) | |
4988 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 4989 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 4990 | } |
ef8d46e8 | 4991 | SvREFCNT_dec(sv); |
2941a2e1 | 4992 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 4993 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 4994 | |
085e731f CB |
4995 | if (stdio) |
4996 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
4997 | ||
2941a2e1 JH |
4998 | # endif /* else HAS_MKSTEMP */ |
4999 | #endif /* else WIN32 */ | |
5000 | return f; | |
760ac839 LW |
5001 | } |
5002 | ||
6f9d8c32 NIS |
5003 | #undef HAS_FSETPOS |
5004 | #undef HAS_FGETPOS | |
5005 | ||
22569500 | 5006 | #endif /* PERLIO_IS_STDIO */ |
760ac839 | 5007 | |
9e353e3b | 5008 | /*======================================================================================*/ |
14a5cf38 | 5009 | /* |
71200d45 NIS |
5010 | * Now some functions in terms of above which may be needed even if we are |
5011 | * not in true PerlIO mode | |
9e353e3b | 5012 | */ |
188f0c84 YO |
5013 | const char * |
5014 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5015 | { | |
5016 | dVAR; | |
8b850bd5 NC |
5017 | const char *direction = NULL; |
5018 | SV *layers; | |
188f0c84 YO |
5019 | /* |
5020 | * Need to supply default layer info from open.pm | |
5021 | */ | |
8b850bd5 NC |
5022 | |
5023 | if (!PL_curcop) | |
5024 | return NULL; | |
5025 | ||
5026 | if (mode && mode[0] != 'r') { | |
5027 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5028 | direction = "open>"; | |
5029 | } else { | |
5030 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5031 | direction = "open<"; | |
188f0c84 | 5032 | } |
8b850bd5 NC |
5033 | if (!direction) |
5034 | return NULL; | |
5035 | ||
20439bc7 | 5036 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5037 | |
5038 | assert(layers); | |
5039 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5040 | } |
5041 | ||
9e353e3b | 5042 | |
760ac839 LW |
5043 | #ifndef HAS_FSETPOS |
5044 | #undef PerlIO_setpos | |
5045 | int | |
766a733e | 5046 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5047 | { |
14a5cf38 JH |
5048 | if (SvOK(pos)) { |
5049 | STRLEN len; | |
2bcd6579 | 5050 | dTHX; |
c4420975 | 5051 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5052 | if (f && len == sizeof(Off_t)) |
5053 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5054 | } | |
93189314 | 5055 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5056 | return -1; |
760ac839 | 5057 | } |
c411622e | 5058 | #else |
c411622e | 5059 | #undef PerlIO_setpos |
5060 | int | |
766a733e | 5061 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5062 | { |
14a5cf38 JH |
5063 | dTHX; |
5064 | if (SvOK(pos)) { | |
5065 | STRLEN len; | |
c4420975 | 5066 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5067 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5068 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5069 | return fsetpos64(f, fpos); |
d9b3e12d | 5070 | #else |
14a5cf38 | 5071 | return fsetpos(f, fpos); |
d9b3e12d | 5072 | #endif |
14a5cf38 | 5073 | } |
766a733e | 5074 | } |
93189314 | 5075 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5076 | return -1; |
c411622e | 5077 | } |
5078 | #endif | |
760ac839 LW |
5079 | |
5080 | #ifndef HAS_FGETPOS | |
5081 | #undef PerlIO_getpos | |
5082 | int | |
766a733e | 5083 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5084 | { |
14a5cf38 JH |
5085 | dTHX; |
5086 | Off_t posn = PerlIO_tell(f); | |
5087 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5088 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5089 | } |
c411622e | 5090 | #else |
c411622e | 5091 | #undef PerlIO_getpos |
5092 | int | |
766a733e | 5093 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5094 | { |
14a5cf38 JH |
5095 | dTHX; |
5096 | Fpos_t fpos; | |
5097 | int code; | |
2d4389e4 | 5098 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5099 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5100 | #else |
14a5cf38 | 5101 | code = fgetpos(f, &fpos); |
d9b3e12d | 5102 | #endif |
14a5cf38 JH |
5103 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5104 | return code; | |
c411622e | 5105 | } |
5106 | #endif | |
760ac839 | 5107 | |
97cb92d6 | 5108 | #if !defined(HAS_VPRINTF) |
760ac839 LW |
5109 | |
5110 | int | |
c78749f2 | 5111 | vprintf(char *pat, char *args) |
662a7e3f CS |
5112 | { |
5113 | _doprnt(pat, args, stdout); | |
22569500 | 5114 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5115 | * value */ |
662a7e3f CS |
5116 | } |
5117 | ||
5118 | int | |
c78749f2 | 5119 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5120 | { |
5121 | _doprnt(pat, args, fd); | |
22569500 | 5122 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5123 | * value */ |
760ac839 LW |
5124 | } |
5125 | ||
5126 | #endif | |
5127 | ||
9cfa90c0 NC |
5128 | /* |
5129 | * Local variables: | |
5130 | * c-indentation-style: bsd | |
5131 | * c-basic-offset: 4 | |
14d04a33 | 5132 | * indent-tabs-mode: nil |
9cfa90c0 NC |
5133 | * End: |
5134 | * | |
14d04a33 | 5135 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5136 | */ |