Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
5cb43542 RGS |
2 | * perlio.c |
3 | * Copyright (c) 1996-2006, Nick Ing-Simmons | |
2eee27d7 | 4 | * Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011 Larry Wall and others |
5cb43542 RGS |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public License | |
7 | * or the Artistic License, as specified in the README file. | |
760ac839 LW |
8 | */ |
9 | ||
14a5cf38 | 10 | /* |
d31a8517 AT |
11 | * Hour after hour for nearly three weary days he had jogged up and down, |
12 | * over passes, and through long dales, and across many streams. | |
4ac71550 TC |
13 | * |
14 | * [pp.791-792 of _The Lord of the Rings_, V/iii: "The Muster of Rohan"] | |
d31a8517 AT |
15 | */ |
16 | ||
166f8a29 DM |
17 | /* This file contains the functions needed to implement PerlIO, which |
18 | * is Perl's private replacement for the C stdio library. This is used | |
19 | * by default unless you compile with -Uuseperlio or run with | |
20 | * PERLIO=:stdio (but don't do this unless you know what you're doing) | |
21 | */ | |
22 | ||
d31a8517 | 23 | /* |
71200d45 | 24 | * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get |
14a5cf38 | 25 | * at the dispatch tables, even when we do not need it for other reasons. |
71200d45 | 26 | * Invent a dSYS macro to abstract this out |
14a5cf38 | 27 | */ |
7bcba3d4 NIS |
28 | #ifdef PERL_IMPLICIT_SYS |
29 | #define dSYS dTHX | |
30 | #else | |
31 | #define dSYS dNOOP | |
32 | #endif | |
33 | ||
6f9d8c32 | 34 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 35 | /* |
6f9d8c32 | 36 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 37 | * which are not #defined in perlio.h. |
6f9d8c32 | 38 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
39 | */ |
40 | ||
41 | #include "EXTERN.h" | |
864dbfa3 | 42 | #define PERL_IN_PERLIO_C |
760ac839 LW |
43 | #include "perl.h" |
44 | ||
32af7c23 CL |
45 | #ifdef PERL_IMPLICIT_CONTEXT |
46 | #undef dSYS | |
47 | #define dSYS dTHX | |
48 | #endif | |
49 | ||
0c4f7ff0 NIS |
50 | #include "XSUB.h" |
51 | ||
9cffb111 OS |
52 | #ifdef __Lynx__ |
53 | /* Missing proto on LynxOS */ | |
54 | int mkstemp(char*); | |
55 | #endif | |
56 | ||
25bbd826 CB |
57 | #ifdef VMS |
58 | #include <rms.h> | |
59 | #endif | |
60 | ||
abf9167d DM |
61 | #define PerlIO_lockcnt(f) (((PerlIOl*)(f))->head->flags) |
62 | ||
1b7a0411 | 63 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 64 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 65 | if (PerlIOValid(f)) { \ |
46c461b5 | 66 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
67 | if (tab && tab->callback) \ |
68 | return (*tab->callback) args; \ | |
69 | else \ | |
70 | return PerlIOBase_ ## base args; \ | |
71 | } \ | |
72 | else \ | |
73 | SETERRNO(EBADF, SS_IVCHAN); \ | |
74 | return failure | |
75 | ||
76 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 77 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 78 | if (PerlIOValid(f)) { \ |
46c461b5 | 79 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
80 | if (tab && tab->callback) \ |
81 | return (*tab->callback) args; \ | |
82 | SETERRNO(EINVAL, LIB_INVARG); \ | |
83 | } \ | |
84 | else \ | |
85 | SETERRNO(EBADF, SS_IVCHAN); \ | |
86 | return failure | |
87 | ||
88 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 89 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 90 | if (PerlIOValid(f)) { \ |
46c461b5 | 91 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
92 | if (tab && tab->callback) \ |
93 | (*tab->callback) args; \ | |
94 | else \ | |
95 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
96 | } \ |
97 | else \ | |
98 | SETERRNO(EBADF, SS_IVCHAN) | |
99 | ||
100 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 101 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 102 | if (PerlIOValid(f)) { \ |
46c461b5 | 103 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
104 | if (tab && tab->callback) \ |
105 | (*tab->callback) args; \ | |
37725cdc NIS |
106 | else \ |
107 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
108 | } \ |
109 | else \ | |
110 | SETERRNO(EBADF, SS_IVCHAN) | |
111 | ||
89a3a251 JH |
112 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
113 | extern int fseeko(FILE *, off_t, int); | |
114 | extern off_t ftello(FILE *); | |
115 | #endif | |
116 | ||
76e6dc3a KW |
117 | #define NATIVE_0xd CR_NATIVE |
118 | #define NATIVE_0xa LF_NATIVE | |
119 | ||
a0c21aa1 JH |
120 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); |
121 | ||
71ab4674 SP |
122 | int |
123 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
124 | { | |
125 | /* | |
126 | * This used to be contents of do_binmode in doio.c | |
127 | */ | |
128 | #ifdef DOSISH | |
71ab4674 | 129 | dTHX; |
58c0efa5 | 130 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
131 | #ifdef NETWARE |
132 | if (PerlLIO_setmode(fp, mode) != -1) { | |
133 | #else | |
134 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
135 | #endif | |
71ab4674 SP |
136 | return 1; |
137 | } | |
138 | else | |
139 | return 0; | |
71ab4674 SP |
140 | #else |
141 | # if defined(USEMYBINMODE) | |
142 | dTHX; | |
58c0efa5 RGS |
143 | # if defined(__CYGWIN__) |
144 | PERL_UNUSED_ARG(iotype); | |
145 | # endif | |
71ab4674 SP |
146 | if (my_binmode(fp, iotype, mode) != FALSE) |
147 | return 1; | |
148 | else | |
149 | return 0; | |
150 | # else | |
151 | PERL_UNUSED_ARG(fp); | |
152 | PERL_UNUSED_ARG(iotype); | |
153 | PERL_UNUSED_ARG(mode); | |
154 | return 1; | |
155 | # endif | |
156 | #endif | |
157 | } | |
71ab4674 | 158 | |
06c7082d | 159 | #ifndef O_ACCMODE |
22569500 | 160 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
161 | #endif |
162 | ||
163 | int | |
164 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
165 | { | |
de009b76 | 166 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
167 | int ix = 0; |
168 | int ptype; | |
169 | switch (result) { | |
170 | case O_RDONLY: | |
171 | ptype = IoTYPE_RDONLY; | |
172 | break; | |
173 | case O_WRONLY: | |
174 | ptype = IoTYPE_WRONLY; | |
175 | break; | |
176 | case O_RDWR: | |
177 | default: | |
178 | ptype = IoTYPE_RDWR; | |
179 | break; | |
180 | } | |
181 | if (writing) | |
182 | *writing = (result != O_RDONLY); | |
183 | ||
184 | if (result == O_RDONLY) { | |
185 | mode[ix++] = 'r'; | |
186 | } | |
187 | #ifdef O_APPEND | |
188 | else if (rawmode & O_APPEND) { | |
189 | mode[ix++] = 'a'; | |
190 | if (result != O_WRONLY) | |
191 | mode[ix++] = '+'; | |
192 | } | |
193 | #endif | |
194 | else { | |
195 | if (result == O_WRONLY) | |
196 | mode[ix++] = 'w'; | |
197 | else { | |
198 | mode[ix++] = 'r'; | |
199 | mode[ix++] = '+'; | |
200 | } | |
201 | } | |
43e5477e JH |
202 | #if O_BINARY != 0 |
203 | /* Unless O_BINARY is different from zero, bit-and:ing | |
204 | * with it won't do much good. */ | |
06c7082d NIS |
205 | if (rawmode & O_BINARY) |
206 | mode[ix++] = 'b'; | |
43e5477e | 207 | # endif |
06c7082d NIS |
208 | mode[ix] = '\0'; |
209 | return ptype; | |
210 | } | |
211 | ||
eb73beca NIS |
212 | #ifndef PERLIO_LAYERS |
213 | int | |
214 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
215 | { | |
6874a2de NIS |
216 | if (!names || !*names |
217 | || strEQ(names, ":crlf") | |
218 | || strEQ(names, ":raw") | |
219 | || strEQ(names, ":bytes") | |
220 | ) { | |
14a5cf38 JH |
221 | return 0; |
222 | } | |
223 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
224 | /* | |
71200d45 | 225 | * NOTREACHED |
14a5cf38 JH |
226 | */ |
227 | return -1; | |
eb73beca NIS |
228 | } |
229 | ||
13621cfb NIS |
230 | void |
231 | PerlIO_destruct(pTHX) | |
232 | { | |
233 | } | |
234 | ||
f5b9d040 NIS |
235 | int |
236 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
237 | { | |
14a5cf38 | 238 | return perlsio_binmode(fp, iotype, mode); |
f5b9d040 | 239 | } |
60382766 | 240 | |
e0fa5af2 | 241 | PerlIO * |
ecdeb87c | 242 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 243 | { |
a0fd4948 | 244 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
245 | return NULL; |
246 | #else | |
247 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 248 | return PerlSIO_fdupopen(f); |
0553478e | 249 | #else |
30753f56 NIS |
250 | #ifdef WIN32 |
251 | return win32_fdupopen(f); | |
252 | #else | |
e0fa5af2 | 253 | if (f) { |
504618e9 | 254 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 255 | if (fd >= 0) { |
06c7082d | 256 | char mode[8]; |
a5936e02 | 257 | #ifdef DJGPP |
dcda55fc AL |
258 | const int omode = djgpp_get_stream_mode(f); |
259 | #else | |
260 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 261 | #endif |
06c7082d | 262 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 263 | /* the r+ is a hack */ |
06c7082d | 264 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
265 | } |
266 | return NULL; | |
267 | } | |
268 | else { | |
93189314 | 269 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 270 | } |
7114a2d2 | 271 | #endif |
e0fa5af2 | 272 | return NULL; |
0553478e | 273 | #endif |
30753f56 | 274 | #endif |
e0fa5af2 NIS |
275 | } |
276 | ||
277 | ||
14a5cf38 | 278 | /* |
71200d45 | 279 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 280 | */ |
ee518936 NIS |
281 | |
282 | PerlIO * | |
14a5cf38 JH |
283 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
284 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
285 | { | |
7cf31beb NIS |
286 | if (narg) { |
287 | if (narg > 1) { | |
3b8752bb | 288 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 289 | } |
14a5cf38 JH |
290 | if (*args == &PL_sv_undef) |
291 | return PerlIO_tmpfile(); | |
292 | else { | |
41188aa0 | 293 | STRLEN len; |
74622586 | 294 | const char *name = SvPV_const(*args, len); |
41188aa0 | 295 | if (!IS_SAFE_PATHNAME(name, len, "open")) |
c8028aa6 TC |
296 | return NULL; |
297 | ||
3b6c1aba | 298 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
299 | fd = PerlLIO_open3(name, imode, perm); |
300 | if (fd >= 0) | |
de009b76 | 301 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
302 | } |
303 | else if (old) { | |
304 | return PerlIO_reopen(name, mode, old); | |
305 | } | |
306 | else { | |
307 | return PerlIO_open(name, mode); | |
308 | } | |
309 | } | |
310 | } | |
311 | else { | |
312 | return PerlIO_fdopen(fd, (char *) mode); | |
313 | } | |
314 | return NULL; | |
ee518936 NIS |
315 | } |
316 | ||
15eb3045 | 317 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
0c4f7ff0 NIS |
318 | XS(XS_PerlIO__Layer__find) |
319 | { | |
14a5cf38 JH |
320 | dXSARGS; |
321 | if (items < 2) | |
322 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
323 | else { | |
dcda55fc | 324 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
325 | ST(0) = (strEQ(name, "crlf") |
326 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
327 | XSRETURN(1); | |
328 | } | |
0c4f7ff0 NIS |
329 | } |
330 | ||
331 | ||
332 | void | |
333 | Perl_boot_core_PerlIO(pTHX) | |
334 | { | |
14a5cf38 | 335 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
336 | } |
337 | ||
ac27b0f5 NIS |
338 | #endif |
339 | ||
32e30700 | 340 | |
6f9d8c32 | 341 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
342 | |
343 | void | |
e8632036 | 344 | PerlIO_init(pTHX) |
760ac839 | 345 | { |
96a5add6 | 346 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
347 | /* |
348 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 349 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 350 | * that may be required by loadable extensions e.g. for |
71200d45 | 351 | * FileHandle::tmpfile |
14a5cf38 | 352 | */ |
760ac839 LW |
353 | } |
354 | ||
33dcbb9a | 355 | #undef PerlIO_tmpfile |
356 | PerlIO * | |
8ac85365 | 357 | PerlIO_tmpfile(void) |
33dcbb9a | 358 | { |
14a5cf38 | 359 | return tmpfile(); |
33dcbb9a | 360 | } |
361 | ||
22569500 | 362 | #else /* PERLIO_IS_STDIO */ |
760ac839 | 363 | |
6f9d8c32 | 364 | /*======================================================================================*/ |
14a5cf38 | 365 | /* |
71200d45 | 366 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 367 | */ |
760ac839 | 368 | |
76ced9ad NIS |
369 | #include "perliol.h" |
370 | ||
6f9d8c32 | 371 | void |
14a5cf38 JH |
372 | PerlIO_debug(const char *fmt, ...) |
373 | { | |
14a5cf38 JH |
374 | va_list ap; |
375 | dSYS; | |
376 | va_start(ap, fmt); | |
582588d2 | 377 | if (!PL_perlio_debug_fd) { |
284167a5 | 378 | if (!TAINTING_get && |
985213f2 AB |
379 | PerlProc_getuid() == PerlProc_geteuid() && |
380 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
381 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
382 | if (s && *s) | |
383 | PL_perlio_debug_fd | |
384 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
385 | else | |
386 | PL_perlio_debug_fd = -1; | |
387 | } else { | |
388 | /* tainting or set*id, so ignore the environment, and ensure we | |
389 | skip these tests next time through. */ | |
27da23d5 | 390 | PL_perlio_debug_fd = -1; |
582588d2 | 391 | } |
14a5cf38 | 392 | } |
27da23d5 | 393 | if (PL_perlio_debug_fd > 0) { |
70ace5da | 394 | #ifdef USE_ITHREADS |
dcda55fc | 395 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
396 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
397 | char buffer[1024]; | |
1208b3dd JH |
398 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
399 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
b469f1e0 | 400 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2)); |
70ace5da | 401 | #else |
dcda55fc AL |
402 | const char *s = CopFILE(PL_curcop); |
403 | STRLEN len; | |
550e2ce0 NC |
404 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
405 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
406 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
407 | ||
b83604b4 | 408 | s = SvPV_const(sv, len); |
b469f1e0 | 409 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len)); |
14a5cf38 | 410 | SvREFCNT_dec(sv); |
70ace5da | 411 | #endif |
14a5cf38 JH |
412 | } |
413 | va_end(ap); | |
6f9d8c32 NIS |
414 | } |
415 | ||
9e353e3b NIS |
416 | /*--------------------------------------------------------------------------------------*/ |
417 | ||
14a5cf38 | 418 | /* |
71200d45 | 419 | * Inner level routines |
14a5cf38 | 420 | */ |
9e353e3b | 421 | |
16865ff7 DM |
422 | /* check that the head field of each layer points back to the head */ |
423 | ||
424 | #ifdef DEBUGGING | |
425 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
426 | static void | |
427 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
428 | { | |
429 | PerlIOl *head, *p; | |
430 | int seen = 0; | |
431 | if (!PerlIOValid(f)) | |
432 | return; | |
433 | p = head = PerlIOBase(f)->head; | |
434 | assert(p); | |
435 | do { | |
436 | assert(p->head == head); | |
437 | if (p == (PerlIOl*)f) | |
438 | seen = 1; | |
439 | p = p->next; | |
440 | } while (p); | |
441 | assert(seen); | |
442 | } | |
443 | #else | |
444 | # define VERIFY_HEAD(f) | |
445 | #endif | |
446 | ||
447 | ||
14a5cf38 | 448 | /* |
71200d45 | 449 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 450 | */ |
05d1247b | 451 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 452 | |
8995e67d DM |
453 | static void |
454 | PerlIO_init_table(pTHX) | |
455 | { | |
456 | if (PL_perlio) | |
457 | return; | |
458 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
459 | } | |
460 | ||
461 | ||
462 | ||
760ac839 | 463 | PerlIO * |
5f1a76d0 | 464 | PerlIO_allocate(pTHX) |
6f9d8c32 | 465 | { |
97aff369 | 466 | dVAR; |
14a5cf38 | 467 | /* |
71200d45 | 468 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 469 | */ |
303f2dc3 DM |
470 | PerlIOl **last; |
471 | PerlIOl *f; | |
a1ea730d | 472 | last = &PL_perlio; |
14a5cf38 JH |
473 | while ((f = *last)) { |
474 | int i; | |
303f2dc3 | 475 | last = (PerlIOl **) (f); |
14a5cf38 | 476 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 477 | if (!((++f)->next)) { |
abf9167d | 478 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 479 | f->tab = NULL; |
16865ff7 | 480 | f->head = f; |
303f2dc3 | 481 | return (PerlIO *)f; |
14a5cf38 JH |
482 | } |
483 | } | |
484 | } | |
303f2dc3 | 485 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
486 | if (!f) { |
487 | return NULL; | |
488 | } | |
303f2dc3 | 489 | *last = (PerlIOl*) f++; |
abf9167d | 490 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 491 | f->tab = NULL; |
16865ff7 | 492 | f->head = f; |
303f2dc3 | 493 | return (PerlIO*) f; |
05d1247b NIS |
494 | } |
495 | ||
a1ea730d NIS |
496 | #undef PerlIO_fdupopen |
497 | PerlIO * | |
ecdeb87c | 498 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 499 | { |
04892f78 | 500 | if (PerlIOValid(f)) { |
de009b76 | 501 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 502 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
503 | if (tab && tab->Dup) |
504 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
505 | else { |
506 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
507 | } | |
a1ea730d | 508 | } |
210e727c JH |
509 | else |
510 | SETERRNO(EBADF, SS_IVCHAN); | |
511 | ||
512 | return NULL; | |
a1ea730d NIS |
513 | } |
514 | ||
515 | void | |
303f2dc3 | 516 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 517 | { |
303f2dc3 | 518 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
519 | if (table) { |
520 | int i; | |
303f2dc3 | 521 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 522 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
523 | PerlIOl * const f = table + i; |
524 | if (f->next) { | |
525 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
526 | } |
527 | } | |
3a1ee7e8 | 528 | Safefree(table); |
14a5cf38 | 529 | *tablep = NULL; |
05d1247b | 530 | } |
05d1247b NIS |
531 | } |
532 | ||
fcf2db38 NIS |
533 | |
534 | PerlIO_list_t * | |
3a1ee7e8 | 535 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 536 | { |
14a5cf38 | 537 | PerlIO_list_t *list; |
96a5add6 | 538 | PERL_UNUSED_CONTEXT; |
a02a5408 | 539 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
540 | list->refcnt = 1; |
541 | return list; | |
fcf2db38 NIS |
542 | } |
543 | ||
544 | void | |
3a1ee7e8 | 545 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 546 | { |
14a5cf38 JH |
547 | if (list) { |
548 | if (--list->refcnt == 0) { | |
549 | if (list->array) { | |
14a5cf38 | 550 | IV i; |
ef8d46e8 VP |
551 | for (i = 0; i < list->cur; i++) |
552 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
553 | Safefree(list->array); |
554 | } | |
555 | Safefree(list); | |
556 | } | |
557 | } | |
fcf2db38 NIS |
558 | } |
559 | ||
560 | void | |
3a1ee7e8 | 561 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 562 | { |
97aff369 | 563 | dVAR; |
334e202e | 564 | PerlIO_pair_t *p; |
b37c2d43 AL |
565 | PERL_UNUSED_CONTEXT; |
566 | ||
14a5cf38 JH |
567 | if (list->cur >= list->len) { |
568 | list->len += 8; | |
569 | if (list->array) | |
570 | Renew(list->array, list->len, PerlIO_pair_t); | |
571 | else | |
a02a5408 | 572 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
573 | } |
574 | p = &(list->array[list->cur++]); | |
575 | p->funcs = funcs; | |
576 | if ((p->arg = arg)) { | |
f84c484e | 577 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 578 | } |
fcf2db38 NIS |
579 | } |
580 | ||
3a1ee7e8 NIS |
581 | PerlIO_list_t * |
582 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
583 | { | |
b37c2d43 | 584 | PerlIO_list_t *list = NULL; |
694c95cf JH |
585 | if (proto) { |
586 | int i; | |
587 | list = PerlIO_list_alloc(aTHX); | |
588 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 589 | SV *arg = proto->array[i].arg; |
24d147a6 | 590 | #ifdef USE_ITHREADS |
a951d81d BL |
591 | if (arg && param) |
592 | arg = sv_dup(arg, param); | |
593 | #else | |
594 | PERL_UNUSED_ARG(param); | |
595 | #endif | |
694c95cf JH |
596 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
597 | } | |
3a1ee7e8 NIS |
598 | } |
599 | return list; | |
600 | } | |
4a4a6116 | 601 | |
05d1247b | 602 | void |
3a1ee7e8 | 603 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 604 | { |
3aaf42a7 | 605 | #ifdef USE_ITHREADS |
303f2dc3 DM |
606 | PerlIOl **table = &proto->Iperlio; |
607 | PerlIOl *f; | |
3a1ee7e8 NIS |
608 | PL_perlio = NULL; |
609 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
610 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 611 | PerlIO_init_table(aTHX); |
a25429c6 | 612 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
613 | while ((f = *table)) { |
614 | int i; | |
303f2dc3 | 615 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 616 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
617 | if (f->next) { |
618 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
619 | } |
620 | f++; | |
621 | } | |
622 | } | |
1b6737cc | 623 | #else |
a25429c6 | 624 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
625 | PERL_UNUSED_ARG(proto); |
626 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 627 | #endif |
9a6404c5 DM |
628 | } |
629 | ||
630 | void | |
13621cfb NIS |
631 | PerlIO_destruct(pTHX) |
632 | { | |
97aff369 | 633 | dVAR; |
303f2dc3 DM |
634 | PerlIOl **table = &PL_perlio; |
635 | PerlIOl *f; | |
694c95cf | 636 | #ifdef USE_ITHREADS |
a25429c6 | 637 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 638 | #endif |
14a5cf38 JH |
639 | while ((f = *table)) { |
640 | int i; | |
303f2dc3 | 641 | table = (PerlIOl **) (f++); |
14a5cf38 | 642 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 643 | PerlIO *x = &(f->next); |
dcda55fc | 644 | const PerlIOl *l; |
14a5cf38 | 645 | while ((l = *x)) { |
cc6623a8 | 646 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
647 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
648 | PerlIO_flush(x); | |
649 | PerlIO_pop(aTHX_ x); | |
650 | } | |
651 | else { | |
652 | x = PerlIONext(x); | |
653 | } | |
654 | } | |
655 | f++; | |
656 | } | |
657 | } | |
13621cfb NIS |
658 | } |
659 | ||
660 | void | |
a999f61b | 661 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 662 | { |
dcda55fc | 663 | const PerlIOl *l = *f; |
16865ff7 | 664 | VERIFY_HEAD(f); |
14a5cf38 | 665 | if (l) { |
cc6623a8 DM |
666 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
667 | l->tab ? l->tab->name : "(Null)"); | |
668 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
669 | /* |
670 | * If popped returns non-zero do not free its layer structure | |
671 | * it has either done so itself, or it is shared and still in | |
71200d45 | 672 | * use |
14a5cf38 | 673 | */ |
f62ce20a | 674 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
675 | return; |
676 | } | |
abf9167d DM |
677 | if (PerlIO_lockcnt(f)) { |
678 | /* we're in use; defer freeing the structure */ | |
679 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
680 | PerlIOBase(f)->tab = NULL; | |
681 | } | |
682 | else { | |
683 | *f = l->next; | |
684 | Safefree(l); | |
685 | } | |
686 | ||
a8c08ecd | 687 | } |
6f9d8c32 NIS |
688 | } |
689 | ||
39f7a870 JH |
690 | /* Return as an array the stack of layers on a filehandle. Note that |
691 | * the stack is returned top-first in the array, and there are three | |
692 | * times as many array elements as there are layers in the stack: the | |
693 | * first element of a layer triplet is the name, the second one is the | |
694 | * arguments, and the third one is the flags. */ | |
695 | ||
696 | AV * | |
697 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
698 | { | |
97aff369 | 699 | dVAR; |
dcda55fc | 700 | AV * const av = newAV(); |
39f7a870 | 701 | |
dcda55fc AL |
702 | if (PerlIOValid(f)) { |
703 | PerlIOl *l = PerlIOBase(f); | |
704 | ||
705 | while (l) { | |
92e45a3e NC |
706 | /* There is some collusion in the implementation of |
707 | XS_PerlIO_get_layers - it knows that name and flags are | |
708 | generated as fresh SVs here, and takes advantage of that to | |
709 | "copy" them by taking a reference. If it changes here, it needs | |
710 | to change there too. */ | |
dcda55fc AL |
711 | SV * const name = l->tab && l->tab->name ? |
712 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
713 | SV * const arg = l->tab && l->tab->Getarg ? | |
714 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
715 | av_push(av, name); | |
716 | av_push(av, arg); | |
717 | av_push(av, newSViv((IV)l->flags)); | |
718 | l = l->next; | |
719 | } | |
720 | } | |
39f7a870 | 721 | |
dcda55fc | 722 | return av; |
39f7a870 JH |
723 | } |
724 | ||
9e353e3b | 725 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 726 | /* |
71200d45 | 727 | * XS Interface for perl code |
14a5cf38 | 728 | */ |
9e353e3b | 729 | |
fcf2db38 | 730 | PerlIO_funcs * |
2edd7e44 | 731 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 732 | { |
27da23d5 | 733 | dVAR; |
14a5cf38 JH |
734 | IV i; |
735 | if ((SSize_t) len <= 0) | |
736 | len = strlen(name); | |
3a1ee7e8 | 737 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 738 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
739 | const STRLEN this_len = strlen(f->name); |
740 | if (this_len == len && memEQ(f->name, name, len)) { | |
fe5a182c | 741 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
742 | return f; |
743 | } | |
744 | } | |
3a1ee7e8 NIS |
745 | if (load && PL_subname && PL_def_layerlist |
746 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
747 | if (PL_in_load_module) { |
748 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
749 | return NULL; | |
750 | } else { | |
396482e1 | 751 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 752 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 753 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 754 | ENTER; |
4fa7c2bf | 755 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 756 | if (cv) { |
9cfa90c0 | 757 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 758 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 759 | } |
4fa7c2bf | 760 | PL_in_load_module = TRUE; |
d7a09b41 SR |
761 | /* |
762 | * The two SVs are magically freed by load_module | |
763 | */ | |
a0714e2c | 764 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
765 | LEAVE; |
766 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
767 | } | |
14a5cf38 JH |
768 | } |
769 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
770 | return NULL; | |
f3862f8b NIS |
771 | } |
772 | ||
2a1bc955 | 773 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
774 | |
775 | static int | |
776 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
777 | { | |
14a5cf38 | 778 | if (SvROK(sv)) { |
159b6efe | 779 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
780 | PerlIO * const ifp = IoIFP(io); |
781 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
782 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
783 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
784 | } |
785 | return 0; | |
b13b2135 NIS |
786 | } |
787 | ||
788 | static int | |
789 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
790 | { | |
14a5cf38 | 791 | if (SvROK(sv)) { |
159b6efe | 792 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
793 | PerlIO * const ifp = IoIFP(io); |
794 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
795 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
796 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
797 | } |
798 | return 0; | |
b13b2135 NIS |
799 | } |
800 | ||
801 | static int | |
802 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
803 | { | |
be2597df | 804 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 805 | return 0; |
b13b2135 NIS |
806 | } |
807 | ||
808 | static int | |
809 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
810 | { | |
be2597df | 811 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 812 | return 0; |
b13b2135 NIS |
813 | } |
814 | ||
815 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
816 | perlio_mg_get, |
817 | perlio_mg_set, | |
22569500 | 818 | NULL, /* len */ |
14a5cf38 JH |
819 | perlio_mg_clear, |
820 | perlio_mg_free | |
b13b2135 NIS |
821 | }; |
822 | ||
15eb3045 | 823 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
824 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
825 | { | |
14a5cf38 | 826 | dXSARGS; |
dcda55fc AL |
827 | SV * const sv = SvRV(ST(1)); |
828 | AV * const av = newAV(); | |
14a5cf38 JH |
829 | MAGIC *mg; |
830 | int count = 0; | |
831 | int i; | |
ad64d0ec | 832 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
833 | SvRMAGICAL_off(sv); |
834 | mg = mg_find(sv, PERL_MAGIC_ext); | |
835 | mg->mg_virtual = &perlio_vtab; | |
836 | mg_magical(sv); | |
be2597df | 837 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
838 | for (i = 2; i < items; i++) { |
839 | STRLEN len; | |
dcda55fc AL |
840 | const char * const name = SvPV_const(ST(i), len); |
841 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 842 | if (layer) { |
b37c2d43 | 843 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
844 | } |
845 | else { | |
846 | ST(count) = ST(i); | |
847 | count++; | |
848 | } | |
849 | } | |
850 | SvREFCNT_dec(av); | |
851 | XSRETURN(count); | |
852 | } | |
853 | ||
22569500 | 854 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 855 | |
e3f3bf95 NIS |
856 | SV * |
857 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 858 | { |
da51bb9b | 859 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 860 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 861 | return sv; |
e3f3bf95 NIS |
862 | } |
863 | ||
15eb3045 | 864 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 865 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 866 | { |
486ec47a | 867 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
868 | during loading of layers. |
869 | */ | |
97aff369 | 870 | dVAR; |
c9bca74a | 871 | dXSARGS; |
58c0efa5 | 872 | PERL_UNUSED_ARG(cv); |
c9bca74a | 873 | if (items) |
e62f0680 | 874 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
875 | XSRETURN(0); |
876 | } | |
877 | ||
15eb3045 | 878 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 879 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 880 | { |
97aff369 | 881 | dVAR; |
14a5cf38 | 882 | dXSARGS; |
58c0efa5 | 883 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
884 | if (items < 2) |
885 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
886 | else { | |
de009b76 | 887 | STRLEN len; |
46c461b5 | 888 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 889 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 890 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
891 | ST(0) = |
892 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
893 | &PL_sv_undef; | |
894 | XSRETURN(1); | |
895 | } | |
0c4f7ff0 NIS |
896 | } |
897 | ||
e3f3bf95 NIS |
898 | void |
899 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
900 | { | |
97aff369 | 901 | dVAR; |
3a1ee7e8 NIS |
902 | if (!PL_known_layers) |
903 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 904 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 905 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
906 | } |
907 | ||
1141d9f8 | 908 | int |
fcf2db38 | 909 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 910 | { |
97aff369 | 911 | dVAR; |
14a5cf38 JH |
912 | if (names) { |
913 | const char *s = names; | |
914 | while (*s) { | |
915 | while (isSPACE(*s) || *s == ':') | |
916 | s++; | |
917 | if (*s) { | |
918 | STRLEN llen = 0; | |
919 | const char *e = s; | |
bd61b366 | 920 | const char *as = NULL; |
14a5cf38 JH |
921 | STRLEN alen = 0; |
922 | if (!isIDFIRST(*s)) { | |
923 | /* | |
924 | * Message is consistent with how attribute lists are | |
925 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 926 | * seen as an invalid separator character. |
14a5cf38 | 927 | */ |
de009b76 | 928 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
929 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
930 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
931 | q, *s, q, s); | |
93189314 | 932 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
933 | return -1; |
934 | } | |
935 | do { | |
936 | e++; | |
0eb30aeb | 937 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
938 | llen = e - s; |
939 | if (*e == '(') { | |
940 | int nesting = 1; | |
941 | as = ++e; | |
942 | while (nesting) { | |
943 | switch (*e++) { | |
944 | case ')': | |
945 | if (--nesting == 0) | |
946 | alen = (e - 1) - as; | |
947 | break; | |
948 | case '(': | |
949 | ++nesting; | |
950 | break; | |
951 | case '\\': | |
952 | /* | |
953 | * It's a nul terminated string, not allowed | |
954 | * to \ the terminating null. Anything other | |
71200d45 | 955 | * character is passed over. |
14a5cf38 JH |
956 | */ |
957 | if (*e++) { | |
958 | break; | |
959 | } | |
960 | /* | |
71200d45 | 961 | * Drop through |
14a5cf38 JH |
962 | */ |
963 | case '\0': | |
964 | e--; | |
a2a5de95 NC |
965 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
966 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
967 | (int) (e - s), s); | |
14a5cf38 JH |
968 | return -1; |
969 | default: | |
970 | /* | |
71200d45 | 971 | * boring. |
14a5cf38 JH |
972 | */ |
973 | break; | |
974 | } | |
975 | } | |
976 | } | |
977 | if (e > s) { | |
46c461b5 | 978 | PerlIO_funcs * const layer = |
14a5cf38 JH |
979 | PerlIO_find_layer(aTHX_ s, llen, 1); |
980 | if (layer) { | |
a951d81d BL |
981 | SV *arg = NULL; |
982 | if (as) | |
983 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 984 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 985 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 986 | SvREFCNT_dec(arg); |
14a5cf38 JH |
987 | } |
988 | else { | |
a2a5de95 NC |
989 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
990 | (int) llen, s); | |
14a5cf38 JH |
991 | return -1; |
992 | } | |
993 | } | |
994 | s = e; | |
995 | } | |
996 | } | |
997 | } | |
998 | return 0; | |
1141d9f8 NIS |
999 | } |
1000 | ||
dfebf958 | 1001 | void |
fcf2db38 | 1002 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1003 | { |
97aff369 | 1004 | dVAR; |
27da23d5 | 1005 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1006 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1007 | tab = &PerlIO_crlf; |
846be114 | 1008 | #else |
6ce75a77 | 1009 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1010 | tab = &PerlIO_stdio; |
846be114 | 1011 | #endif |
14a5cf38 | 1012 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1013 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1014 | &PL_sv_undef); |
dfebf958 NIS |
1015 | } |
1016 | ||
e3f3bf95 | 1017 | SV * |
14a5cf38 | 1018 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1019 | { |
14a5cf38 | 1020 | return av->array[n].arg; |
e3f3bf95 NIS |
1021 | } |
1022 | ||
f3862f8b | 1023 | PerlIO_funcs * |
14a5cf38 | 1024 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1025 | { |
14a5cf38 JH |
1026 | if (n >= 0 && n < av->cur) { |
1027 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1028 | av->array[n].funcs->name); | |
1029 | return av->array[n].funcs; | |
1030 | } | |
1031 | if (!def) | |
1032 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1033 | return def; | |
e3f3bf95 NIS |
1034 | } |
1035 | ||
4ec2216f NIS |
1036 | IV |
1037 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1038 | { | |
8772537c AL |
1039 | PERL_UNUSED_ARG(mode); |
1040 | PERL_UNUSED_ARG(arg); | |
1041 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1042 | if (PerlIOValid(f)) { |
1043 | PerlIO_flush(f); | |
1044 | PerlIO_pop(aTHX_ f); | |
1045 | return 0; | |
1046 | } | |
1047 | return -1; | |
1048 | } | |
1049 | ||
27da23d5 | 1050 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1051 | sizeof(PerlIO_funcs), |
1052 | "pop", | |
1053 | 0, | |
1054 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1055 | PerlIOPop_pushed, | |
1056 | NULL, | |
c0888ace | 1057 | PerlIOBase_open, |
4ec2216f NIS |
1058 | NULL, |
1059 | NULL, | |
1060 | NULL, | |
1061 | NULL, | |
1062 | NULL, | |
1063 | NULL, | |
1064 | NULL, | |
1065 | NULL, | |
de009b76 AL |
1066 | NULL, |
1067 | NULL, | |
4ec2216f NIS |
1068 | NULL, /* flush */ |
1069 | NULL, /* fill */ | |
1070 | NULL, | |
1071 | NULL, | |
1072 | NULL, | |
1073 | NULL, | |
1074 | NULL, /* get_base */ | |
1075 | NULL, /* get_bufsiz */ | |
1076 | NULL, /* get_ptr */ | |
1077 | NULL, /* get_cnt */ | |
1078 | NULL, /* set_ptrcnt */ | |
1079 | }; | |
1080 | ||
fcf2db38 | 1081 | PerlIO_list_t * |
e3f3bf95 NIS |
1082 | PerlIO_default_layers(pTHX) |
1083 | { | |
97aff369 | 1084 | dVAR; |
3a1ee7e8 | 1085 | if (!PL_def_layerlist) { |
284167a5 | 1086 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1087 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1088 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1089 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1090 | #if defined(WIN32) |
27da23d5 | 1091 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1092 | #if 0 |
14a5cf38 | 1093 | osLayer = &PerlIO_win32; |
0c4128ad | 1094 | #endif |
2f8118af | 1095 | #endif |
27da23d5 JH |
1096 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1097 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1098 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1099 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1100 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1101 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1102 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1103 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1104 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1105 | &PL_sv_undef); | |
1106 | if (s) { | |
3a1ee7e8 | 1107 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1108 | } |
1109 | else { | |
3a1ee7e8 | 1110 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1111 | } |
1141d9f8 | 1112 | } |
3a1ee7e8 NIS |
1113 | if (PL_def_layerlist->cur < 2) { |
1114 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1115 | } |
3a1ee7e8 | 1116 | return PL_def_layerlist; |
e3f3bf95 NIS |
1117 | } |
1118 | ||
0c4f7ff0 NIS |
1119 | void |
1120 | Perl_boot_core_PerlIO(pTHX) | |
1121 | { | |
1122 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1123 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1124 | __FILE__); | |
0c4f7ff0 | 1125 | #endif |
14a5cf38 | 1126 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1127 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1128 | } |
e3f3bf95 NIS |
1129 | |
1130 | PerlIO_funcs * | |
1131 | PerlIO_default_layer(pTHX_ I32 n) | |
1132 | { | |
97aff369 | 1133 | dVAR; |
46c461b5 | 1134 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1135 | if (n < 0) |
1136 | n += av->cur; | |
27da23d5 | 1137 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1138 | } |
1139 | ||
a999f61b NIS |
1140 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1141 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1142 | |
1143 | void | |
1141d9f8 | 1144 | PerlIO_stdstreams(pTHX) |
60382766 | 1145 | { |
97aff369 | 1146 | dVAR; |
a1ea730d | 1147 | if (!PL_perlio) { |
8995e67d | 1148 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1149 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1150 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1151 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1152 | } | |
60382766 NIS |
1153 | } |
1154 | ||
1155 | PerlIO * | |
27da23d5 | 1156 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1157 | { |
16865ff7 | 1158 | VERIFY_HEAD(f); |
2dc2558e | 1159 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1160 | Perl_croak( aTHX_ |
5cf96513 RB |
1161 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1162 | "PerlIO layer function table size", (UV)tab->fsize, | |
1163 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1164 | } |
1165 | if (tab->size) { | |
b464bac0 | 1166 | PerlIOl *l; |
2dc2558e | 1167 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1168 | Perl_croak( aTHX_ |
5cf96513 RB |
1169 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1170 | "PerlIO layer instance size", (UV)tab->size, | |
1171 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1172 | } |
1173 | /* Real layer with a data area */ | |
002e75cf JH |
1174 | if (f) { |
1175 | char *temp; | |
1176 | Newxz(temp, tab->size, char); | |
1177 | l = (PerlIOl*)temp; | |
1178 | if (l) { | |
1179 | l->next = *f; | |
1180 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1181 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1182 | *f = l; |
1183 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1184 | (void*)f, tab->name, | |
1185 | (mode) ? mode : "(Null)", (void*)arg); | |
1186 | if (*l->tab->Pushed && | |
1187 | (*l->tab->Pushed) | |
1188 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1189 | PerlIO_pop(aTHX_ f); | |
1190 | return NULL; | |
1191 | } | |
2dc2558e | 1192 | } |
002e75cf JH |
1193 | else |
1194 | return NULL; | |
2dc2558e NIS |
1195 | } |
1196 | } | |
1197 | else if (f) { | |
1198 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1199 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1200 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1201 | if (tab->Pushed && |
27da23d5 | 1202 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1203 | return NULL; |
14a5cf38 JH |
1204 | } |
1205 | } | |
1206 | return f; | |
60382766 NIS |
1207 | } |
1208 | ||
81fe74fb LT |
1209 | PerlIO * |
1210 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1211 | IV n, const char *mode, int fd, int imode, int perm, | |
1212 | PerlIO *old, int narg, SV **args) | |
1213 | { | |
1214 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1215 | if (tab && tab->Open) { | |
1216 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1217 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1218 | PerlIO_close(ret); |
1219 | return NULL; | |
1220 | } | |
1221 | return ret; | |
1222 | } | |
1223 | SETERRNO(EINVAL, LIB_INVARG); | |
1224 | return NULL; | |
1225 | } | |
1226 | ||
dfebf958 | 1227 | IV |
86e05cf2 NIS |
1228 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1229 | { | |
1230 | if (PerlIOValid(f)) { | |
1231 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1232 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1233 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1234 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1235 | } | |
1236 | else { | |
1237 | /* Not suitable - pop it */ | |
1238 | PerlIO_pop(aTHX_ f); | |
1239 | } | |
1240 | return 0; | |
1241 | } | |
1242 | return -1; | |
1243 | } | |
1244 | ||
1245 | IV | |
2dc2558e | 1246 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1247 | { |
8772537c AL |
1248 | PERL_UNUSED_ARG(mode); |
1249 | PERL_UNUSED_ARG(arg); | |
1250 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1251 | |
04892f78 | 1252 | if (PerlIOValid(f)) { |
86e05cf2 | 1253 | PerlIO *t; |
de009b76 | 1254 | const PerlIOl *l; |
14a5cf38 | 1255 | PerlIO_flush(f); |
86e05cf2 NIS |
1256 | /* |
1257 | * Strip all layers that are not suitable for a raw stream | |
1258 | */ | |
1259 | t = f; | |
1260 | while (t && (l = *t)) { | |
cc6623a8 | 1261 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1262 | /* Has a handler - normal case */ |
9d97e8b8 | 1263 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1264 | if (*t == l) { |
1265 | /* Layer still there - move down a layer */ | |
1266 | t = PerlIONext(t); | |
1267 | } | |
1268 | } | |
1269 | else { | |
1270 | return -1; | |
1271 | } | |
14a5cf38 JH |
1272 | } |
1273 | else { | |
86e05cf2 NIS |
1274 | /* No handler - pop it */ |
1275 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1276 | } |
1277 | } | |
86e05cf2 | 1278 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1279 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1280 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1281 | return 0; |
1282 | } | |
14a5cf38 JH |
1283 | } |
1284 | return -1; | |
dfebf958 NIS |
1285 | } |
1286 | ||
ac27b0f5 | 1287 | int |
14a5cf38 | 1288 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1289 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1290 | { |
14a5cf38 JH |
1291 | int code = 0; |
1292 | while (n < max) { | |
8772537c | 1293 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1294 | if (tab) { |
1295 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1296 | code = -1; | |
1297 | break; | |
1298 | } | |
1299 | } | |
1300 | n++; | |
1301 | } | |
1302 | return code; | |
e3f3bf95 NIS |
1303 | } |
1304 | ||
1305 | int | |
ac27b0f5 NIS |
1306 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1307 | { | |
14a5cf38 | 1308 | int code = 0; |
da0fccaa DG |
1309 | ENTER; |
1310 | save_scalar(PL_errgv); | |
53f1b6d2 | 1311 | if (f && names) { |
8772537c | 1312 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1313 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1314 | if (code == 0) { | |
d9dac8cd | 1315 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1316 | } |
3a1ee7e8 | 1317 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1318 | } |
da0fccaa | 1319 | LEAVE; |
14a5cf38 | 1320 | return code; |
ac27b0f5 NIS |
1321 | } |
1322 | ||
f3862f8b | 1323 | |
60382766 | 1324 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1325 | /* |
71200d45 | 1326 | * Given the abstraction above the public API functions |
14a5cf38 | 1327 | */ |
60382766 NIS |
1328 | |
1329 | int | |
f5b9d040 | 1330 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1331 | { |
68b5363f | 1332 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1333 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1334 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1335 | iotype, mode, (names) ? names : "(Null)"); |
1336 | ||
03c0554d NIS |
1337 | if (names) { |
1338 | /* Do not flush etc. if (e.g.) switching encodings. | |
1339 | if a pushed layer knows it needs to flush lower layers | |
1340 | (for example :unix which is never going to call them) | |
1341 | it can do the flush when it is pushed. | |
1342 | */ | |
1343 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1344 | } | |
1345 | else { | |
86e05cf2 | 1346 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1347 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1348 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1349 | O_BINARY so we can look for it in mode. | |
1350 | */ | |
1351 | if (!(mode & O_BINARY)) { | |
1352 | /* Text mode */ | |
86e05cf2 NIS |
1353 | /* FIXME?: Looking down the layer stack seems wrong, |
1354 | but is a way of reaching past (say) an encoding layer | |
1355 | to flip CRLF-ness of the layer(s) below | |
1356 | */ | |
03c0554d NIS |
1357 | while (*f) { |
1358 | /* Perhaps we should turn on bottom-most aware layer | |
1359 | e.g. Ilya's idea that UNIX TTY could serve | |
1360 | */ | |
cc6623a8 DM |
1361 | if (PerlIOBase(f)->tab && |
1362 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1363 | { | |
03c0554d NIS |
1364 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1365 | /* Not in text mode - flush any pending stuff and flip it */ | |
1366 | PerlIO_flush(f); | |
1367 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1368 | } | |
1369 | /* Only need to turn it on in one layer so we are done */ | |
1370 | return TRUE; | |
ed53a2bb | 1371 | } |
03c0554d | 1372 | f = PerlIONext(f); |
14a5cf38 | 1373 | } |
03c0554d NIS |
1374 | /* Not finding a CRLF aware layer presumably means we are binary |
1375 | which is not what was requested - so we failed | |
1376 | We _could_ push :crlf layer but so could caller | |
1377 | */ | |
1378 | return FALSE; | |
14a5cf38 | 1379 | } |
6ce75a77 | 1380 | #endif |
86e05cf2 NIS |
1381 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1382 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1383 | */ |
a0714e2c | 1384 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1385 | } |
f5b9d040 NIS |
1386 | } |
1387 | ||
f5b9d040 | 1388 | int |
e87a358a | 1389 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1390 | { |
37725cdc | 1391 | if (PerlIOValid(f)) { |
46c461b5 | 1392 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1393 | if (tab && tab->Close) |
1394 | return (*tab->Close)(aTHX_ f); | |
1395 | else | |
1396 | return PerlIOBase_close(aTHX_ f); | |
1397 | } | |
14a5cf38 | 1398 | else { |
93189314 | 1399 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1400 | return -1; |
1401 | } | |
76ced9ad NIS |
1402 | } |
1403 | ||
b931b1d9 | 1404 | int |
e87a358a | 1405 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1406 | { |
de009b76 | 1407 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1408 | while (PerlIOValid(f)) { |
1409 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1410 | if (PerlIO_lockcnt(f)) |
1411 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1412 | f = PerlIONext(f); | |
f6c77cf1 | 1413 | } |
14a5cf38 | 1414 | return code; |
b931b1d9 NIS |
1415 | } |
1416 | ||
b931b1d9 | 1417 | int |
e87a358a | 1418 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1419 | { |
97aff369 | 1420 | dVAR; |
b32dd47e | 1421 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1422 | } |
1423 | ||
1141d9f8 | 1424 | |
fcf2db38 | 1425 | static PerlIO_funcs * |
2edd7e44 NIS |
1426 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1427 | { | |
97aff369 | 1428 | dVAR; |
14a5cf38 | 1429 | /* |
71200d45 | 1430 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1431 | */ |
526fd1b4 | 1432 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1433 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1434 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1435 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1436 | if (!f) |
dcbac5bb | 1437 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1438 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1439 | return f; |
1440 | } | |
14a5cf38 JH |
1441 | |
1442 | /* | |
71200d45 | 1443 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1444 | */ |
1445 | switch (SvTYPE(sv)) { | |
1446 | case SVt_PVAV: | |
6a245ed1 | 1447 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1448 | case SVt_PVHV: |
6a245ed1 | 1449 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1450 | case SVt_PVCV: |
6a245ed1 | 1451 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1452 | case SVt_PVGV: |
6a245ed1 | 1453 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1454 | default: |
1455 | return NULL; | |
14a5cf38 | 1456 | } |
2edd7e44 NIS |
1457 | } |
1458 | ||
fcf2db38 | 1459 | PerlIO_list_t * |
14a5cf38 JH |
1460 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1461 | const char *mode, int narg, SV **args) | |
1462 | { | |
97aff369 | 1463 | dVAR; |
14a5cf38 JH |
1464 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1465 | int incdef = 1; | |
a1ea730d | 1466 | if (!PL_perlio) |
14a5cf38 JH |
1467 | PerlIO_stdstreams(aTHX); |
1468 | if (narg) { | |
dcda55fc | 1469 | SV * const arg = *args; |
14a5cf38 | 1470 | /* |
71200d45 NIS |
1471 | * If it is a reference but not an object see if we have a handler |
1472 | * for it | |
14a5cf38 JH |
1473 | */ |
1474 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1475 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1476 | if (handler) { |
3a1ee7e8 NIS |
1477 | def = PerlIO_list_alloc(aTHX); |
1478 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1479 | incdef = 0; |
1480 | } | |
1481 | /* | |
e934609f | 1482 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1483 | * something sensible else we will just stringfy and open |
71200d45 | 1484 | * resulting string. |
14a5cf38 JH |
1485 | */ |
1486 | } | |
1487 | } | |
9fe371da | 1488 | if (!layers || !*layers) |
11bcd5da | 1489 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1490 | if (layers && *layers) { |
1491 | PerlIO_list_t *av; | |
1492 | if (incdef) { | |
a951d81d | 1493 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1494 | } |
1495 | else { | |
1496 | av = def; | |
1497 | } | |
0cff2cf3 NIS |
1498 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1499 | return av; | |
1500 | } | |
1501 | else { | |
1502 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1503 | return NULL; |
0cff2cf3 | 1504 | } |
14a5cf38 JH |
1505 | } |
1506 | else { | |
1507 | if (incdef) | |
1508 | def->refcnt++; | |
1509 | return def; | |
1510 | } | |
ee518936 NIS |
1511 | } |
1512 | ||
1513 | PerlIO * | |
14a5cf38 JH |
1514 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1515 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1516 | { | |
97aff369 | 1517 | dVAR; |
14a5cf38 JH |
1518 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1519 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1520 | if (!layers || !*layers) |
11bcd5da | 1521 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1522 | if (layers && *layers) |
1523 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1524 | } | |
1525 | } | |
1526 | else { | |
de009b76 | 1527 | PerlIO_list_t *layera; |
14a5cf38 JH |
1528 | IV n; |
1529 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1530 | if (PerlIOValid(f)) { |
14a5cf38 | 1531 | /* |
71200d45 NIS |
1532 | * This is "reopen" - it is not tested as perl does not use it |
1533 | * yet | |
14a5cf38 JH |
1534 | */ |
1535 | PerlIOl *l = *f; | |
3a1ee7e8 | 1536 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1537 | while (l) { |
a951d81d | 1538 | SV *arg = NULL; |
cc6623a8 | 1539 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1540 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1541 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1542 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1543 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1544 | l = *PerlIONext(&l); |
1545 | } | |
1546 | } | |
1547 | else { | |
1548 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1549 | if (!layera) { |
1550 | return NULL; | |
1551 | } | |
14a5cf38 JH |
1552 | } |
1553 | /* | |
71200d45 | 1554 | * Start at "top" of layer stack |
14a5cf38 JH |
1555 | */ |
1556 | n = layera->cur - 1; | |
1557 | while (n >= 0) { | |
46c461b5 | 1558 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1559 | if (t && t->Open) { |
1560 | tab = t; | |
1561 | break; | |
1562 | } | |
1563 | n--; | |
1564 | } | |
1565 | if (tab) { | |
1566 | /* | |
71200d45 | 1567 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1568 | */ |
7cf31beb | 1569 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1570 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1571 | } |
14a5cf38 | 1572 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1573 | tab->name, layers ? layers : "(Null)", mode, fd, |
1574 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1575 | if (tab->Open) |
1576 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1577 | f, narg, args); | |
1578 | else { | |
1579 | SETERRNO(EINVAL, LIB_INVARG); | |
1580 | f = NULL; | |
1581 | } | |
14a5cf38 JH |
1582 | if (f) { |
1583 | if (n + 1 < layera->cur) { | |
1584 | /* | |
1585 | * More layers above the one that we used to open - | |
71200d45 | 1586 | * apply them now |
14a5cf38 | 1587 | */ |
d9dac8cd NIS |
1588 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1589 | /* If pushing layers fails close the file */ | |
1590 | PerlIO_close(f); | |
14a5cf38 JH |
1591 | f = NULL; |
1592 | } | |
1593 | } | |
1594 | } | |
1595 | } | |
3a1ee7e8 | 1596 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1597 | } |
1598 | return f; | |
ee518936 | 1599 | } |
b931b1d9 NIS |
1600 | |
1601 | ||
9e353e3b | 1602 | SSize_t |
e87a358a | 1603 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1604 | { |
7918f24d NC |
1605 | PERL_ARGS_ASSERT_PERLIO_READ; |
1606 | ||
b32dd47e | 1607 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1608 | } |
1609 | ||
313ca112 | 1610 | SSize_t |
e87a358a | 1611 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1612 | { |
7918f24d NC |
1613 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1614 | ||
b32dd47e | 1615 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1616 | } |
1617 | ||
9e353e3b | 1618 | SSize_t |
e87a358a | 1619 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1620 | { |
7918f24d NC |
1621 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1622 | ||
b32dd47e | 1623 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1624 | } |
1625 | ||
6f9d8c32 | 1626 | int |
e87a358a | 1627 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1628 | { |
b32dd47e | 1629 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1630 | } |
1631 | ||
9e353e3b | 1632 | Off_t |
e87a358a | 1633 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1634 | { |
b32dd47e | 1635 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1636 | } |
1637 | ||
6f9d8c32 | 1638 | int |
e87a358a | 1639 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1640 | { |
97aff369 | 1641 | dVAR; |
14a5cf38 JH |
1642 | if (f) { |
1643 | if (*f) { | |
de009b76 | 1644 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1645 | |
1646 | if (tab && tab->Flush) | |
f62ce20a | 1647 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1648 | else |
1649 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1650 | } |
1651 | else { | |
fe5a182c | 1652 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1653 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1654 | return -1; |
1655 | } | |
1656 | } | |
1657 | else { | |
1658 | /* | |
1659 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1660 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1661 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1662 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1663 | * decisions? --jhi |
14a5cf38 | 1664 | */ |
303f2dc3 DM |
1665 | PerlIOl **table = &PL_perlio; |
1666 | PerlIOl *ff; | |
14a5cf38 | 1667 | int code = 0; |
303f2dc3 | 1668 | while ((ff = *table)) { |
14a5cf38 | 1669 | int i; |
303f2dc3 | 1670 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1671 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1672 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1673 | code = -1; |
303f2dc3 | 1674 | ff++; |
14a5cf38 JH |
1675 | } |
1676 | } | |
1677 | return code; | |
1678 | } | |
760ac839 LW |
1679 | } |
1680 | ||
a9c883f6 | 1681 | void |
f62ce20a | 1682 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1683 | { |
97aff369 | 1684 | dVAR; |
303f2dc3 DM |
1685 | PerlIOl **table = &PL_perlio; |
1686 | PerlIOl *f; | |
14a5cf38 JH |
1687 | while ((f = *table)) { |
1688 | int i; | |
303f2dc3 | 1689 | table = (PerlIOl **) (f++); |
14a5cf38 | 1690 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1691 | if (f->next |
1692 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1693 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1694 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1695 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1696 | f++; |
1697 | } | |
a9c883f6 | 1698 | } |
a9c883f6 NIS |
1699 | } |
1700 | ||
06da4f11 | 1701 | int |
e87a358a | 1702 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1703 | { |
b32dd47e | 1704 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1705 | } |
1706 | ||
f3862f8b NIS |
1707 | int |
1708 | PerlIO_isutf8(PerlIO *f) | |
1709 | { | |
1b7a0411 JH |
1710 | if (PerlIOValid(f)) |
1711 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1712 | else | |
1713 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1714 | |
1b7a0411 | 1715 | return -1; |
f3862f8b NIS |
1716 | } |
1717 | ||
6f9d8c32 | 1718 | int |
e87a358a | 1719 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1720 | { |
b32dd47e | 1721 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1722 | } |
1723 | ||
9e353e3b | 1724 | int |
e87a358a | 1725 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1726 | { |
b32dd47e | 1727 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1728 | } |
1729 | ||
9e353e3b | 1730 | void |
e87a358a | 1731 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1732 | { |
b32dd47e | 1733 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1734 | } |
1735 | ||
9e353e3b | 1736 | void |
e87a358a | 1737 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1738 | { |
b32dd47e | 1739 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1740 | } |
1741 | ||
9e353e3b NIS |
1742 | int |
1743 | PerlIO_has_base(PerlIO *f) | |
1744 | { | |
1b7a0411 | 1745 | if (PerlIOValid(f)) { |
46c461b5 | 1746 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1747 | |
1748 | if (tab) | |
1749 | return (tab->Get_base != NULL); | |
1b7a0411 | 1750 | } |
1b7a0411 JH |
1751 | |
1752 | return 0; | |
760ac839 LW |
1753 | } |
1754 | ||
9e353e3b NIS |
1755 | int |
1756 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1757 | { |
d7dfc388 SK |
1758 | if (PerlIOValid(f)) { |
1759 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1760 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1761 | |
d7dfc388 SK |
1762 | if (tab) |
1763 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1764 | } |
14a5cf38 | 1765 | } |
1b7a0411 | 1766 | |
14a5cf38 | 1767 | return 0; |
9e353e3b NIS |
1768 | } |
1769 | ||
9e353e3b NIS |
1770 | int |
1771 | PerlIO_has_cntptr(PerlIO *f) | |
1772 | { | |
04892f78 | 1773 | if (PerlIOValid(f)) { |
46c461b5 | 1774 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1775 | |
1776 | if (tab) | |
1777 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1778 | } |
1b7a0411 | 1779 | |
14a5cf38 | 1780 | return 0; |
9e353e3b NIS |
1781 | } |
1782 | ||
9e353e3b NIS |
1783 | int |
1784 | PerlIO_canset_cnt(PerlIO *f) | |
1785 | { | |
04892f78 | 1786 | if (PerlIOValid(f)) { |
46c461b5 | 1787 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1788 | |
1789 | if (tab) | |
1790 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1791 | } |
1b7a0411 | 1792 | |
14a5cf38 | 1793 | return 0; |
760ac839 LW |
1794 | } |
1795 | ||
888911fc | 1796 | STDCHAR * |
e87a358a | 1797 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1798 | { |
b32dd47e | 1799 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1800 | } |
1801 | ||
b66f3475 | 1802 | SSize_t |
e87a358a | 1803 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1804 | { |
b66f3475 | 1805 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1806 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1807 | } |
1808 | ||
9e353e3b | 1809 | STDCHAR * |
e87a358a | 1810 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1811 | { |
b32dd47e | 1812 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1813 | } |
1814 | ||
b66f3475 | 1815 | SSize_t |
e87a358a | 1816 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1817 | { |
b32dd47e | 1818 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1819 | } |
1820 | ||
9e353e3b | 1821 | void |
b66f3475 | 1822 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1823 | { |
b32dd47e | 1824 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1825 | } |
1826 | ||
9e353e3b | 1827 | void |
b66f3475 | 1828 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1829 | { |
b32dd47e | 1830 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1831 | } |
1832 | ||
4ec2216f | 1833 | |
9e353e3b | 1834 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1835 | /* |
71200d45 | 1836 | * utf8 and raw dummy layers |
14a5cf38 | 1837 | */ |
dfebf958 | 1838 | |
26fb694e | 1839 | IV |
2dc2558e | 1840 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1841 | { |
96a5add6 | 1842 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1843 | PERL_UNUSED_ARG(mode); |
1844 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1845 | if (PerlIOValid(f)) { |
cc6623a8 | 1846 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1847 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1848 | else | |
1849 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1850 | return 0; | |
1851 | } | |
1852 | return -1; | |
26fb694e NIS |
1853 | } |
1854 | ||
27da23d5 | 1855 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1856 | sizeof(PerlIO_funcs), |
14a5cf38 | 1857 | "utf8", |
2dc2558e | 1858 | 0, |
a778d1f5 | 1859 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1860 | PerlIOUtf8_pushed, |
1861 | NULL, | |
c0888ace | 1862 | PerlIOBase_open, |
14a5cf38 JH |
1863 | NULL, |
1864 | NULL, | |
1865 | NULL, | |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
1869 | NULL, | |
1870 | NULL, | |
de009b76 AL |
1871 | NULL, |
1872 | NULL, | |
22569500 NIS |
1873 | NULL, /* flush */ |
1874 | NULL, /* fill */ | |
14a5cf38 JH |
1875 | NULL, |
1876 | NULL, | |
1877 | NULL, | |
1878 | NULL, | |
22569500 NIS |
1879 | NULL, /* get_base */ |
1880 | NULL, /* get_bufsiz */ | |
1881 | NULL, /* get_ptr */ | |
1882 | NULL, /* get_cnt */ | |
1883 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1884 | }; |
1885 | ||
27da23d5 | 1886 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1887 | sizeof(PerlIO_funcs), |
14a5cf38 | 1888 | "bytes", |
2dc2558e | 1889 | 0, |
a778d1f5 | 1890 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1891 | PerlIOUtf8_pushed, |
1892 | NULL, | |
c0888ace | 1893 | PerlIOBase_open, |
14a5cf38 JH |
1894 | NULL, |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
1901 | NULL, | |
de009b76 AL |
1902 | NULL, |
1903 | NULL, | |
22569500 NIS |
1904 | NULL, /* flush */ |
1905 | NULL, /* fill */ | |
14a5cf38 JH |
1906 | NULL, |
1907 | NULL, | |
1908 | NULL, | |
1909 | NULL, | |
22569500 NIS |
1910 | NULL, /* get_base */ |
1911 | NULL, /* get_bufsiz */ | |
1912 | NULL, /* get_ptr */ | |
1913 | NULL, /* get_cnt */ | |
1914 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1915 | }; |
1916 | ||
27da23d5 | 1917 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1918 | sizeof(PerlIO_funcs), |
14a5cf38 | 1919 | "raw", |
2dc2558e | 1920 | 0, |
14a5cf38 JH |
1921 | PERLIO_K_DUMMY, |
1922 | PerlIORaw_pushed, | |
1923 | PerlIOBase_popped, | |
ecfd0649 | 1924 | PerlIOBase_open, |
14a5cf38 JH |
1925 | NULL, |
1926 | NULL, | |
1927 | NULL, | |
1928 | NULL, | |
1929 | NULL, | |
1930 | NULL, | |
1931 | NULL, | |
1932 | NULL, | |
de009b76 AL |
1933 | NULL, |
1934 | NULL, | |
22569500 NIS |
1935 | NULL, /* flush */ |
1936 | NULL, /* fill */ | |
14a5cf38 JH |
1937 | NULL, |
1938 | NULL, | |
1939 | NULL, | |
1940 | NULL, | |
22569500 NIS |
1941 | NULL, /* get_base */ |
1942 | NULL, /* get_bufsiz */ | |
1943 | NULL, /* get_ptr */ | |
1944 | NULL, /* get_cnt */ | |
1945 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1946 | }; |
1947 | /*--------------------------------------------------------------------------------------*/ | |
1948 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1949 | /* |
71200d45 | 1950 | * "Methods" of the "base class" |
14a5cf38 | 1951 | */ |
9e353e3b NIS |
1952 | |
1953 | IV | |
f62ce20a | 1954 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1955 | { |
04892f78 | 1956 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1957 | } |
1958 | ||
f5b9d040 | 1959 | char * |
81428673 | 1960 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1961 | { |
1962 | char *s = buf; | |
81428673 | 1963 | if (PerlIOValid(f)) { |
de009b76 | 1964 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1965 | if (flags & PERLIO_F_APPEND) { |
1966 | *s++ = 'a'; | |
1967 | if (flags & PERLIO_F_CANREAD) { | |
1968 | *s++ = '+'; | |
1969 | } | |
14a5cf38 | 1970 | } |
81428673 NIS |
1971 | else if (flags & PERLIO_F_CANREAD) { |
1972 | *s++ = 'r'; | |
1973 | if (flags & PERLIO_F_CANWRITE) | |
1974 | *s++ = '+'; | |
1975 | } | |
1976 | else if (flags & PERLIO_F_CANWRITE) { | |
1977 | *s++ = 'w'; | |
1978 | if (flags & PERLIO_F_CANREAD) { | |
1979 | *s++ = '+'; | |
1980 | } | |
14a5cf38 | 1981 | } |
35990314 | 1982 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1983 | if (!(flags & PERLIO_F_CRLF)) |
1984 | *s++ = 'b'; | |
5f1a76d0 | 1985 | #endif |
81428673 | 1986 | } |
14a5cf38 JH |
1987 | *s = '\0'; |
1988 | return buf; | |
f5b9d040 NIS |
1989 | } |
1990 | ||
81428673 | 1991 | |
76ced9ad | 1992 | IV |
2dc2558e | 1993 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1994 | { |
de009b76 | 1995 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1996 | PERL_UNUSED_CONTEXT; |
8772537c | 1997 | PERL_UNUSED_ARG(arg); |
de009b76 | 1998 | |
14a5cf38 JH |
1999 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2000 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 2001 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
2002 | l->flags |= PERLIO_F_FASTGETS; |
2003 | if (mode) { | |
3b6c1aba | 2004 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2005 | mode++; |
2006 | switch (*mode++) { | |
2007 | case 'r': | |
2008 | l->flags |= PERLIO_F_CANREAD; | |
2009 | break; | |
2010 | case 'a': | |
2011 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2012 | break; | |
2013 | case 'w': | |
2014 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2015 | break; | |
2016 | default: | |
93189314 | 2017 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2018 | return -1; |
2019 | } | |
2020 | while (*mode) { | |
2021 | switch (*mode++) { | |
2022 | case '+': | |
2023 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2024 | break; | |
2025 | case 'b': | |
2026 | l->flags &= ~PERLIO_F_CRLF; | |
2027 | break; | |
2028 | case 't': | |
2029 | l->flags |= PERLIO_F_CRLF; | |
2030 | break; | |
2031 | default: | |
93189314 | 2032 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2033 | return -1; |
2034 | } | |
2035 | } | |
2036 | } | |
2037 | else { | |
2038 | if (l->next) { | |
2039 | l->flags |= l->next->flags & | |
2040 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2041 | PERLIO_F_APPEND); | |
2042 | } | |
2043 | } | |
5e2ab84b | 2044 | #if 0 |
14a5cf38 | 2045 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2046 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2047 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2048 | #endif |
14a5cf38 | 2049 | return 0; |
76ced9ad NIS |
2050 | } |
2051 | ||
2052 | IV | |
f62ce20a | 2053 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2054 | { |
96a5add6 | 2055 | PERL_UNUSED_CONTEXT; |
8772537c | 2056 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2057 | return 0; |
760ac839 LW |
2058 | } |
2059 | ||
9e353e3b | 2060 | SSize_t |
f62ce20a | 2061 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2062 | { |
14a5cf38 | 2063 | /* |
71200d45 | 2064 | * Save the position as current head considers it |
14a5cf38 | 2065 | */ |
de009b76 | 2066 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2067 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2068 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2069 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2070 | } |
2071 | ||
f6c77cf1 | 2072 | SSize_t |
f62ce20a | 2073 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2074 | { |
14a5cf38 JH |
2075 | STDCHAR *buf = (STDCHAR *) vbuf; |
2076 | if (f) { | |
263df5f1 JH |
2077 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2078 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2079 | SETERRNO(EBADF, SS_IVCHAN); | |
2080 | return 0; | |
2081 | } | |
14a5cf38 | 2082 | while (count > 0) { |
93c2c2ec IZ |
2083 | get_cnt: |
2084 | { | |
14a5cf38 JH |
2085 | SSize_t avail = PerlIO_get_cnt(f); |
2086 | SSize_t take = 0; | |
2087 | if (avail > 0) | |
94e529cc | 2088 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2089 | if (take > 0) { |
2090 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2091 | Copy(ptr, buf, take, STDCHAR); | |
2092 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2093 | count -= take; | |
2094 | buf += take; | |
93c2c2ec IZ |
2095 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2096 | goto get_cnt; | |
14a5cf38 JH |
2097 | } |
2098 | if (count > 0 && avail <= 0) { | |
2099 | if (PerlIO_fill(f) != 0) | |
2100 | break; | |
2101 | } | |
93c2c2ec | 2102 | } |
14a5cf38 JH |
2103 | } |
2104 | return (buf - (STDCHAR *) vbuf); | |
2105 | } | |
f6c77cf1 | 2106 | return 0; |
f6c77cf1 NIS |
2107 | } |
2108 | ||
9e353e3b | 2109 | IV |
f62ce20a | 2110 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2111 | { |
96a5add6 | 2112 | PERL_UNUSED_CONTEXT; |
8772537c | 2113 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2114 | return 0; |
9e353e3b NIS |
2115 | } |
2116 | ||
2117 | IV | |
f62ce20a | 2118 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2119 | { |
96a5add6 | 2120 | PERL_UNUSED_CONTEXT; |
8772537c | 2121 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2122 | return -1; |
06da4f11 NIS |
2123 | } |
2124 | ||
2125 | IV | |
f62ce20a | 2126 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2127 | { |
37725cdc NIS |
2128 | IV code = -1; |
2129 | if (PerlIOValid(f)) { | |
2130 | PerlIO *n = PerlIONext(f); | |
2131 | code = PerlIO_flush(f); | |
2132 | PerlIOBase(f)->flags &= | |
2133 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2134 | while (PerlIOValid(n)) { | |
de009b76 | 2135 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2136 | if (tab && tab->Close) { |
2137 | if ((*tab->Close)(aTHX_ n) != 0) | |
2138 | code = -1; | |
2139 | break; | |
2140 | } | |
2141 | else { | |
2142 | PerlIOBase(n)->flags &= | |
2143 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2144 | } | |
2145 | n = PerlIONext(n); | |
2146 | } | |
2147 | } | |
2148 | else { | |
2149 | SETERRNO(EBADF, SS_IVCHAN); | |
2150 | } | |
14a5cf38 | 2151 | return code; |
9e353e3b NIS |
2152 | } |
2153 | ||
2154 | IV | |
f62ce20a | 2155 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2156 | { |
96a5add6 | 2157 | PERL_UNUSED_CONTEXT; |
04892f78 | 2158 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2159 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2160 | } | |
2161 | return 1; | |
9e353e3b NIS |
2162 | } |
2163 | ||
2164 | IV | |
f62ce20a | 2165 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2166 | { |
96a5add6 | 2167 | PERL_UNUSED_CONTEXT; |
04892f78 | 2168 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2169 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2170 | } | |
2171 | return 1; | |
9e353e3b NIS |
2172 | } |
2173 | ||
2174 | void | |
f62ce20a | 2175 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2176 | { |
04892f78 | 2177 | if (PerlIOValid(f)) { |
dcda55fc | 2178 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2179 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2180 | if (PerlIOValid(n)) |
14a5cf38 JH |
2181 | PerlIO_clearerr(n); |
2182 | } | |
9e353e3b NIS |
2183 | } |
2184 | ||
2185 | void | |
f62ce20a | 2186 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2187 | { |
96a5add6 | 2188 | PERL_UNUSED_CONTEXT; |
04892f78 | 2189 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2190 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2191 | } | |
9e353e3b NIS |
2192 | } |
2193 | ||
93a8090d NIS |
2194 | SV * |
2195 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2196 | { | |
2197 | if (!arg) | |
a0714e2c | 2198 | return NULL; |
24d147a6 | 2199 | #ifdef USE_ITHREADS |
93a8090d | 2200 | if (param) { |
a951d81d BL |
2201 | arg = sv_dup(arg, param); |
2202 | SvREFCNT_inc_simple_void_NN(arg); | |
2203 | return arg; | |
93a8090d NIS |
2204 | } |
2205 | else { | |
2206 | return newSVsv(arg); | |
2207 | } | |
2208 | #else | |
1b6737cc | 2209 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2210 | return newSVsv(arg); |
2211 | #endif | |
2212 | } | |
2213 | ||
2214 | PerlIO * | |
ecdeb87c | 2215 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2216 | { |
1b6737cc | 2217 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2218 | if (PerlIOValid(nexto)) { |
de009b76 | 2219 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2220 | if (tab && tab->Dup) |
2221 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2222 | else | |
2223 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2224 | } |
2225 | if (f) { | |
dcda55fc | 2226 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2227 | SV *arg = NULL; |
93a8090d | 2228 | char buf[8]; |
316ebaf2 | 2229 | assert(self); |
fe5a182c | 2230 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2231 | self ? self->name : "(Null)", |
2232 | (void*)f, (void*)o, (void*)param); | |
2233 | if (self && self->Getarg) | |
210e727c | 2234 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2235 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2236 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2237 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2238 | SvREFCNT_dec(arg); |
93a8090d NIS |
2239 | } |
2240 | return f; | |
2241 | } | |
2242 | ||
27da23d5 | 2243 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2244 | |
8b84d7dd | 2245 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2246 | static void |
2247 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2248 | dVAR; |
22c96fc1 | 2249 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2250 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2251 | int *new_array; |
2252 | ||
2253 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2254 | old_max, new_fd, new_max); | |
2255 | ||
2256 | if (new_fd < old_max) { | |
2257 | return; | |
2258 | } | |
2259 | ||
f4ae5be6 NC |
2260 | assert (new_max > new_fd); |
2261 | ||
eae082a0 JH |
2262 | /* Use plain realloc() since we need this memory to be really |
2263 | * global and visible to all the interpreters and/or threads. */ | |
2264 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2265 | |
2266 | if (!new_array) { | |
8b84d7dd | 2267 | #ifdef USE_ITHREADS |
6cb8cb21 | 2268 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2269 | #endif |
4cbe3a7d | 2270 | croak_no_mem(); |
22c96fc1 NC |
2271 | } |
2272 | ||
2273 | PL_perlio_fd_refcnt_size = new_max; | |
2274 | PL_perlio_fd_refcnt = new_array; | |
2275 | ||
95b63a38 JH |
2276 | PerlIO_debug("Zeroing %p, %d\n", |
2277 | (void*)(new_array + old_max), | |
2278 | new_max - old_max); | |
22c96fc1 NC |
2279 | |
2280 | Zero(new_array + old_max, new_max - old_max, int); | |
2281 | } | |
2282 | ||
2283 | ||
93a8090d NIS |
2284 | void |
2285 | PerlIO_init(pTHX) | |
2286 | { | |
8b84d7dd | 2287 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2288 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2289 | } |
2290 | ||
168d5872 NIS |
2291 | void |
2292 | PerlIOUnix_refcnt_inc(int fd) | |
2293 | { | |
27da23d5 | 2294 | dTHX; |
22c96fc1 | 2295 | if (fd >= 0) { |
97aff369 | 2296 | dVAR; |
22c96fc1 | 2297 | |
8b84d7dd | 2298 | #ifdef USE_ITHREADS |
6cb8cb21 | 2299 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2300 | #endif |
22c96fc1 NC |
2301 | if (fd >= PL_perlio_fd_refcnt_size) |
2302 | S_more_refcounted_fds(aTHX_ fd); | |
2303 | ||
27da23d5 | 2304 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2305 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2306 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2307 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2308 | fd, PL_perlio_fd_refcnt[fd]); | |
2309 | } | |
2310 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2311 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2312 | |
8b84d7dd | 2313 | #ifdef USE_ITHREADS |
6cb8cb21 | 2314 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2315 | #endif |
8b84d7dd | 2316 | } else { |
12605ff9 | 2317 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2318 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2319 | } |
2320 | } | |
2321 | ||
168d5872 NIS |
2322 | int |
2323 | PerlIOUnix_refcnt_dec(int fd) | |
2324 | { | |
2325 | int cnt = 0; | |
22c96fc1 | 2326 | if (fd >= 0) { |
97aff369 | 2327 | dVAR; |
8b84d7dd | 2328 | #ifdef USE_ITHREADS |
6cb8cb21 | 2329 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2330 | #endif |
8b84d7dd | 2331 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2332 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2333 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2334 | fd, PL_perlio_fd_refcnt_size); |
2335 | } | |
2336 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2337 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2338 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2339 | fd, PL_perlio_fd_refcnt[fd]); |
2340 | } | |
27da23d5 | 2341 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2342 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2343 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2344 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2345 | #endif |
8b84d7dd | 2346 | } else { |
12605ff9 | 2347 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2348 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2349 | } |
2350 | return cnt; | |
2351 | } | |
2352 | ||
2e0cfa16 FC |
2353 | int |
2354 | PerlIOUnix_refcnt(int fd) | |
2355 | { | |
2356 | dTHX; | |
2357 | int cnt = 0; | |
2358 | if (fd >= 0) { | |
2359 | dVAR; | |
2360 | #ifdef USE_ITHREADS | |
2361 | MUTEX_LOCK(&PL_perlio_mutex); | |
2362 | #endif | |
2363 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2364 | /* diag_listed_as: refcnt: fd %d%s */ | |
2365 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2366 | fd, PL_perlio_fd_refcnt_size); | |
2367 | } | |
2368 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2369 | /* diag_listed_as: refcnt: fd %d%s */ | |
2370 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2371 | fd, PL_perlio_fd_refcnt[fd]); | |
2372 | } | |
2373 | cnt = PL_perlio_fd_refcnt[fd]; | |
2374 | #ifdef USE_ITHREADS | |
2375 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2376 | #endif | |
2377 | } else { | |
2378 | /* diag_listed_as: refcnt: fd %d%s */ | |
2379 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2380 | } | |
2381 | return cnt; | |
2382 | } | |
2383 | ||
694c95cf JH |
2384 | void |
2385 | PerlIO_cleanup(pTHX) | |
2386 | { | |
97aff369 | 2387 | dVAR; |
694c95cf JH |
2388 | int i; |
2389 | #ifdef USE_ITHREADS | |
a25429c6 | 2390 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2391 | #else |
2392 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2393 | #endif |
e47547a8 | 2394 | |
694c95cf JH |
2395 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2396 | for (i=0; i < 3; i++) | |
2397 | PerlIOUnix_refcnt_inc(i); | |
2398 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2399 | /* Restore STDIN..STDERR refcount */ | |
2400 | for (i=0; i < 3; i++) | |
2401 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2402 | |
2403 | if (PL_known_layers) { | |
2404 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2405 | PL_known_layers = NULL; | |
2406 | } | |
27da23d5 | 2407 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2408 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2409 | PL_def_layerlist = NULL; | |
2410 | } | |
6cb8cb21 RGS |
2411 | } |
2412 | ||
0934c9d9 | 2413 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2414 | { |
53d44271 | 2415 | dVAR; |
4f3da17a DM |
2416 | #if 0 |
2417 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2418 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2419 | being present (at least in win32) :-(. | |
2420 | Disable for now. | |
2421 | */ | |
6cb8cb21 RGS |
2422 | #ifdef DEBUGGING |
2423 | { | |
2424 | /* By now all filehandles should have been closed, so any | |
2425 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2426 | * errors. */ | |
77db880c JH |
2427 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2428 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2429 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2430 | int i; |
2431 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2432 | if (PL_perlio_fd_refcnt[i]) { |
2433 | const STRLEN len = | |
2434 | my_snprintf(buf, sizeof(buf), | |
2435 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2436 | i, PL_perlio_fd_refcnt[i]); | |
2437 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2438 | } | |
6cb8cb21 RGS |
2439 | } |
2440 | } | |
2441 | #endif | |
4f3da17a | 2442 | #endif |
eae082a0 JH |
2443 | /* Not bothering with PL_perlio_mutex since by now |
2444 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2445 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2446 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2447 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2448 | PL_perlio_fd_refcnt = NULL; |
2449 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2450 | } |
694c95cf JH |
2451 | } |
2452 | ||
9e353e3b | 2453 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2454 | /* |
71200d45 | 2455 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2456 | */ |
9e353e3b | 2457 | |
14a5cf38 | 2458 | typedef struct { |
22569500 NIS |
2459 | struct _PerlIO base; /* The generic part */ |
2460 | int fd; /* UNIX like file descriptor */ | |
2461 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2462 | } PerlIOUnix; |
2463 | ||
abf9167d DM |
2464 | static void |
2465 | S_lockcnt_dec(pTHX_ const void* f) | |
2466 | { | |
2467 | PerlIO_lockcnt((PerlIO*)f)--; | |
2468 | } | |
2469 | ||
2470 | ||
2471 | /* call the signal handler, and if that handler happens to clear | |
2472 | * this handle, free what we can and return true */ | |
2473 | ||
2474 | static bool | |
2475 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2476 | ENTER; | |
2477 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2478 | PerlIO_lockcnt(f)++; | |
2479 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2480 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2481 | LEAVE; | |
abf9167d | 2482 | return 0; |
be48bbe8 | 2483 | } |
abf9167d DM |
2484 | /* we've just run some perl-level code that could have done |
2485 | * anything, including closing the file or clearing this layer. | |
2486 | * If so, free any lower layers that have already been | |
2487 | * cleared, then return an error. */ | |
2488 | while (PerlIOValid(f) && | |
2489 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2490 | { | |
2491 | const PerlIOl *l = *f; | |
2492 | *f = l->next; | |
2493 | Safefree(l); | |
2494 | } | |
be48bbe8 | 2495 | LEAVE; |
abf9167d DM |
2496 | return 1; |
2497 | } | |
2498 | ||
6f9d8c32 | 2499 | int |
9e353e3b | 2500 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2501 | { |
14a5cf38 | 2502 | int oflags = -1; |
3b6c1aba | 2503 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2504 | mode++; |
2505 | switch (*mode) { | |
2506 | case 'r': | |
2507 | oflags = O_RDONLY; | |
2508 | if (*++mode == '+') { | |
2509 | oflags = O_RDWR; | |
2510 | mode++; | |
2511 | } | |
2512 | break; | |
2513 | ||
2514 | case 'w': | |
2515 | oflags = O_CREAT | O_TRUNC; | |
2516 | if (*++mode == '+') { | |
2517 | oflags |= O_RDWR; | |
2518 | mode++; | |
2519 | } | |
2520 | else | |
2521 | oflags |= O_WRONLY; | |
2522 | break; | |
2523 | ||
2524 | case 'a': | |
2525 | oflags = O_CREAT | O_APPEND; | |
2526 | if (*++mode == '+') { | |
2527 | oflags |= O_RDWR; | |
2528 | mode++; | |
2529 | } | |
2530 | else | |
2531 | oflags |= O_WRONLY; | |
2532 | break; | |
2533 | } | |
43e5477e JH |
2534 | |
2535 | /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */ | |
2536 | ||
2537 | /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one | |
2538 | * of them in, and then bit-and-masking the other them away, won't | |
2539 | * have much of an effect. */ | |
2540 | switch (*mode) { | |
2541 | case 'b': | |
2542 | #if O_TEXT != O_BINARY | |
2543 | oflags |= O_BINARY; | |
14a5cf38 | 2544 | oflags &= ~O_TEXT; |
43e5477e JH |
2545 | #endif |
2546 | mode++; | |
2547 | break; | |
2548 | case 't': | |
2549 | #if O_TEXT != O_BINARY | |
14a5cf38 JH |
2550 | oflags |= O_TEXT; |
2551 | oflags &= ~O_BINARY; | |
43e5477e JH |
2552 | #endif |
2553 | mode++; | |
2554 | break; | |
2555 | default: | |
2556 | # if O_BINARY != 0 | |
2557 | /* bit-or:ing with zero O_BINARY would be useless. */ | |
93f31ee9 PG |
2558 | /* |
2559 | * If neither "t" nor "b" was specified, open the file | |
2560 | * in O_BINARY mode. | |
43e5477e JH |
2561 | * |
2562 | * Note that if something else than the zero byte was seen | |
2563 | * here (e.g. bogus mode "rx"), just few lines later we will | |
2564 | * set the errno and invalidate the flags. | |
93f31ee9 PG |
2565 | */ |
2566 | oflags |= O_BINARY; | |
43e5477e JH |
2567 | # endif |
2568 | break; | |
93f31ee9 | 2569 | } |
14a5cf38 | 2570 | if (*mode || oflags == -1) { |
93189314 | 2571 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2572 | oflags = -1; |
2573 | } | |
2574 | return oflags; | |
9e353e3b NIS |
2575 | } |
2576 | ||
2577 | IV | |
f62ce20a | 2578 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2579 | { |
96a5add6 | 2580 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2581 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2582 | } |
2583 | ||
aa063c35 NIS |
2584 | static void |
2585 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2586 | { |
de009b76 | 2587 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2588 | #if defined(WIN32) |
aa063c35 NIS |
2589 | Stat_t st; |
2590 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2591 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2592 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2593 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2594 | } | |
aa063c35 NIS |
2595 | else { |
2596 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2597 | } | |
6caa5a9c NIS |
2598 | } |
2599 | #endif | |
aa063c35 NIS |
2600 | s->fd = fd; |
2601 | s->oflags = imode; | |
2602 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2603 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2604 | } |
2605 | ||
2606 | IV | |
2607 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2608 | { | |
2609 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2610 | if (*PerlIONext(f)) { |
4b069b44 | 2611 | /* We never call down so do any pending stuff now */ |
03c0554d | 2612 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2613 | /* |
71200d45 | 2614 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2615 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2616 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2617 | */ |
acbd16bf | 2618 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2619 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2620 | } |
2621 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2622 | |
14a5cf38 | 2623 | return code; |
4b803d04 NIS |
2624 | } |
2625 | ||
c2fcde81 JH |
2626 | IV |
2627 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2628 | { | |
de009b76 | 2629 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2630 | Off_t new_loc; |
96a5add6 | 2631 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2632 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2633 | #ifdef ESPIPE | |
2634 | SETERRNO(ESPIPE, LIB_INVARG); | |
2635 | #else | |
2636 | SETERRNO(EINVAL, LIB_INVARG); | |
2637 | #endif | |
2638 | return -1; | |
2639 | } | |
0723351e NC |
2640 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2641 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2642 | return -1; |
c2fcde81 JH |
2643 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2644 | return 0; | |
2645 | } | |
2646 | ||
9e353e3b | 2647 | PerlIO * |
14a5cf38 JH |
2648 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2649 | IV n, const char *mode, int fd, int imode, | |
2650 | int perm, PerlIO *f, int narg, SV **args) | |
2651 | { | |
d9dac8cd | 2652 | if (PerlIOValid(f)) { |
cc6623a8 | 2653 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2654 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2655 | } |
2656 | if (narg > 0) { | |
3b6c1aba | 2657 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2658 | mode++; |
2659 | else { | |
2660 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2661 | #ifdef VMS |
2662 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2663 | #else | |
14a5cf38 | 2664 | perm = 0666; |
5e2ce0f3 | 2665 | #endif |
14a5cf38 JH |
2666 | } |
2667 | if (imode != -1) { | |
41188aa0 TC |
2668 | STRLEN len; |
2669 | const char *path = SvPV_const(*args, len); | |
2670 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2671 | return NULL; |
14a5cf38 JH |
2672 | fd = PerlLIO_open3(path, imode, perm); |
2673 | } | |
2674 | } | |
2675 | if (fd >= 0) { | |
3b6c1aba | 2676 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2677 | mode++; |
2678 | if (!f) { | |
2679 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2680 | } |
2681 | if (!PerlIOValid(f)) { | |
a33cf58c | 2682 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2683 | PerlLIO_close(fd); |
a33cf58c NIS |
2684 | return NULL; |
2685 | } | |
d9dac8cd | 2686 | } |
aa063c35 | 2687 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2688 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2689 | if (*mode == IoTYPE_APPEND) |
2690 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2691 | return f; |
2692 | } | |
2693 | else { | |
2694 | if (f) { | |
6f207bd3 | 2695 | NOOP; |
14a5cf38 | 2696 | /* |
71200d45 | 2697 | * FIXME: pop layers ??? |
14a5cf38 JH |
2698 | */ |
2699 | } | |
2700 | return NULL; | |
2701 | } | |
9e353e3b NIS |
2702 | } |
2703 | ||
71200d45 | 2704 | PerlIO * |
ecdeb87c | 2705 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2706 | { |
dcda55fc | 2707 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2708 | int fd = os->fd; |
ecdeb87c NIS |
2709 | if (flags & PERLIO_DUP_FD) { |
2710 | fd = PerlLIO_dup(fd); | |
2711 | } | |
22c96fc1 | 2712 | if (fd >= 0) { |
ecdeb87c | 2713 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2714 | if (f) { |
2715 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2716 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2717 | return f; |
2718 | } | |
0a20f69b | 2719 | PerlLIO_close(fd); |
71200d45 NIS |
2720 | } |
2721 | return NULL; | |
2722 | } | |
2723 | ||
2724 | ||
9e353e3b | 2725 | SSize_t |
f62ce20a | 2726 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2727 | { |
97aff369 | 2728 | dVAR; |
abf9167d DM |
2729 | int fd; |
2730 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2731 | return -1; | |
2732 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2733 | #ifdef PERLIO_STD_SPECIAL |
2734 | if (fd == 0) | |
2735 | return PERLIO_STD_IN(fd, vbuf, count); | |
2736 | #endif | |
81428673 | 2737 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2738 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2739 | return 0; |
1fd8f4ce | 2740 | } |
14a5cf38 | 2741 | while (1) { |
b464bac0 | 2742 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2743 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2744 | if (len < 0) { |
2745 | if (errno != EAGAIN) { | |
2746 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2747 | } | |
2748 | } | |
2749 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2750 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2751 | SETERRNO(0,0); |
2752 | } | |
14a5cf38 JH |
2753 | return len; |
2754 | } | |
abf9167d DM |
2755 | /* EINTR */ |
2756 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2757 | return -1; | |
14a5cf38 | 2758 | } |
b464bac0 | 2759 | /*NOTREACHED*/ |
9e353e3b NIS |
2760 | } |
2761 | ||
2762 | SSize_t | |
f62ce20a | 2763 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2764 | { |
97aff369 | 2765 | dVAR; |
abf9167d DM |
2766 | int fd; |
2767 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2768 | return -1; | |
2769 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2770 | #ifdef PERLIO_STD_SPECIAL |
2771 | if (fd == 1 || fd == 2) | |
2772 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2773 | #endif | |
14a5cf38 | 2774 | while (1) { |
de009b76 | 2775 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2776 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2777 | if (len < 0) { |
2778 | if (errno != EAGAIN) { | |
2779 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2780 | } | |
2781 | } | |
14a5cf38 JH |
2782 | return len; |
2783 | } | |
abf9167d DM |
2784 | /* EINTR */ |
2785 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2786 | return -1; | |
06da4f11 | 2787 | } |
1b6737cc | 2788 | /*NOTREACHED*/ |
9e353e3b NIS |
2789 | } |
2790 | ||
9e353e3b | 2791 | Off_t |
f62ce20a | 2792 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2793 | { |
96a5add6 AL |
2794 | PERL_UNUSED_CONTEXT; |
2795 | ||
14a5cf38 | 2796 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2797 | } |
2798 | ||
2556f95e GF |
2799 | |
2800 | IV | |
2376d97d | 2801 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2802 | { |
97aff369 | 2803 | dVAR; |
de009b76 | 2804 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2805 | int code = 0; |
168d5872 NIS |
2806 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2807 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2808 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2809 | return 0; | |
22569500 | 2810 | } |
93a8090d NIS |
2811 | } |
2812 | else { | |
93189314 | 2813 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2814 | return -1; |
2815 | } | |
14a5cf38 JH |
2816 | while (PerlLIO_close(fd) != 0) { |
2817 | if (errno != EINTR) { | |
2818 | code = -1; | |
2819 | break; | |
2820 | } | |
abf9167d DM |
2821 | /* EINTR */ |
2822 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2823 | return -1; | |
14a5cf38 JH |
2824 | } |
2825 | if (code == 0) { | |
2826 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2827 | } | |
2828 | return code; | |
9e353e3b NIS |
2829 | } |
2830 | ||
27da23d5 | 2831 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2832 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2833 | "unix", |
2834 | sizeof(PerlIOUnix), | |
2835 | PERLIO_K_RAW, | |
2836 | PerlIOUnix_pushed, | |
2376d97d | 2837 | PerlIOBase_popped, |
14a5cf38 | 2838 | PerlIOUnix_open, |
86e05cf2 | 2839 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2840 | NULL, |
2841 | PerlIOUnix_fileno, | |
71200d45 | 2842 | PerlIOUnix_dup, |
14a5cf38 JH |
2843 | PerlIOUnix_read, |
2844 | PerlIOBase_unread, | |
2845 | PerlIOUnix_write, | |
2846 | PerlIOUnix_seek, | |
2847 | PerlIOUnix_tell, | |
2848 | PerlIOUnix_close, | |
22569500 NIS |
2849 | PerlIOBase_noop_ok, /* flush */ |
2850 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2851 | PerlIOBase_eof, |
2852 | PerlIOBase_error, | |
2853 | PerlIOBase_clearerr, | |
2854 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2855 | NULL, /* get_base */ |
2856 | NULL, /* get_bufsiz */ | |
2857 | NULL, /* get_ptr */ | |
2858 | NULL, /* get_cnt */ | |
2859 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2860 | }; |
2861 | ||
2862 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2863 | /* |
71200d45 | 2864 | * stdio as a layer |
14a5cf38 | 2865 | */ |
9e353e3b | 2866 | |
313e59c8 NIS |
2867 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2868 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2869 | broken by the last second glibc 2.3 fix | |
2870 | */ | |
2871 | #define STDIO_BUFFER_WRITABLE | |
2872 | #endif | |
2873 | ||
2874 | ||
14a5cf38 JH |
2875 | typedef struct { |
2876 | struct _PerlIO base; | |
22569500 | 2877 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2878 | } PerlIOStdio; |
2879 | ||
2880 | IV | |
f62ce20a | 2881 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2882 | { |
96a5add6 AL |
2883 | PERL_UNUSED_CONTEXT; |
2884 | ||
c4420975 AL |
2885 | if (PerlIOValid(f)) { |
2886 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2887 | if (s) | |
2888 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2889 | } |
2890 | errno = EBADF; | |
2891 | return -1; | |
9e353e3b NIS |
2892 | } |
2893 | ||
766a733e | 2894 | char * |
14a5cf38 JH |
2895 | PerlIOStdio_mode(const char *mode, char *tmode) |
2896 | { | |
de009b76 | 2897 | char * const ret = tmode; |
a0625d38 SR |
2898 | if (mode) { |
2899 | while (*mode) { | |
2900 | *tmode++ = *mode++; | |
2901 | } | |
14a5cf38 | 2902 | } |
95005ad8 | 2903 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2904 | *tmode++ = 'b'; |
2905 | #endif | |
14a5cf38 JH |
2906 | *tmode = '\0'; |
2907 | return ret; | |
2908 | } | |
2909 | ||
4b803d04 | 2910 | IV |
2dc2558e | 2911 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2912 | { |
1fd8f4ce NIS |
2913 | PerlIO *n; |
2914 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2915 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2916 | if (toptab == tab) { |
2917 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2918 | PerlIO_pop(aTHX_ f); | |
2919 | return 0; | |
2920 | } else { | |
de009b76 | 2921 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2922 | char tmode[8]; |
2923 | FILE *stdio; | |
81428673 | 2924 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2925 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2926 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2927 | /* We never call down so do any pending stuff now */ | |
2928 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2929 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2930 | } |
1fd8f4ce NIS |
2931 | else { |
2932 | return -1; | |
2933 | } | |
2934 | } | |
14a5cf38 | 2935 | } |
2dc2558e | 2936 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2937 | } |
2938 | ||
22569500 | 2939 | |
9e353e3b | 2940 | PerlIO * |
4b069b44 | 2941 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2942 | { |
14a5cf38 JH |
2943 | dTHX; |
2944 | PerlIO *f = NULL; | |
2945 | if (stdio) { | |
22569500 | 2946 | PerlIOStdio *s; |
375ed12a JH |
2947 | int fd0 = fileno(stdio); |
2948 | if (fd0 < 0) { | |
2949 | return NULL; | |
2950 | } | |
4b069b44 NIS |
2951 | if (!mode || !*mode) { |
2952 | /* We need to probe to see how we can open the stream | |
2953 | so start with read/write and then try write and read | |
2954 | we dup() so that we can fclose without loosing the fd. | |
2955 | ||
2956 | Note that the errno value set by a failing fdopen | |
2957 | varies between stdio implementations. | |
2958 | */ | |
375ed12a JH |
2959 | const int fd = PerlLIO_dup(fd0); |
2960 | FILE *f2; | |
2961 | if (fd < 0) { | |
2962 | return f; | |
2963 | } | |
2964 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2965 | if (!f2) { |
a33cf58c | 2966 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2967 | } |
2968 | if (!f2) { | |
a33cf58c | 2969 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2970 | } |
2971 | if (!f2) { | |
2972 | /* Don't seem to be able to open */ | |
2973 | PerlLIO_close(fd); | |
2974 | return f; | |
2975 | } | |
2976 | fclose(f2); | |
22569500 | 2977 | } |
de092133 | 2978 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2979 | s = PerlIOSelf(f, PerlIOStdio); |
2980 | s->stdio = stdio; | |
c586124f | 2981 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2982 | } |
14a5cf38 JH |
2983 | } |
2984 | return f; | |
9e353e3b NIS |
2985 | } |
2986 | ||
2987 | PerlIO * | |
14a5cf38 JH |
2988 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2989 | IV n, const char *mode, int fd, int imode, | |
2990 | int perm, PerlIO *f, int narg, SV **args) | |
2991 | { | |
2992 | char tmode[8]; | |
d9dac8cd | 2993 | if (PerlIOValid(f)) { |
41188aa0 TC |
2994 | STRLEN len; |
2995 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 2996 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 2997 | FILE *stdio; |
41188aa0 | 2998 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 2999 | return NULL; |
1751d015 | 3000 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
3001 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
3002 | s->stdio); | |
14a5cf38 JH |
3003 | if (!s->stdio) |
3004 | return NULL; | |
3005 | s->stdio = stdio; | |
1751d015 | 3006 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3007 | return f; |
3008 | } | |
3009 | else { | |
3010 | if (narg > 0) { | |
41188aa0 TC |
3011 | STRLEN len; |
3012 | const char * const path = SvPV_const(*args, len); | |
3013 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 3014 | return NULL; |
3b6c1aba | 3015 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3016 | mode++; |
3017 | fd = PerlLIO_open3(path, imode, perm); | |
3018 | } | |
3019 | else { | |
95005ad8 GH |
3020 | FILE *stdio; |
3021 | bool appended = FALSE; | |
3022 | #ifdef __CYGWIN__ | |
3023 | /* Cygwin wants its 'b' early. */ | |
3024 | appended = TRUE; | |
3025 | mode = PerlIOStdio_mode(mode, tmode); | |
3026 | #endif | |
3027 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3028 | if (stdio) { |
6f0313ac JH |
3029 | if (!f) { |
3030 | f = PerlIO_allocate(aTHX); | |
3031 | } | |
95005ad8 GH |
3032 | if (!appended) |
3033 | mode = PerlIOStdio_mode(mode, tmode); | |
3034 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3035 | if (f) { | |
0f0f9e2b JH |
3036 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3037 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3038 | } else { | |
3039 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3040 | } |
3041 | return f; | |
3042 | } | |
3043 | else { | |
3044 | return NULL; | |
3045 | } | |
14a5cf38 JH |
3046 | } |
3047 | } | |
3048 | if (fd >= 0) { | |
3049 | FILE *stdio = NULL; | |
3050 | int init = 0; | |
3b6c1aba | 3051 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3052 | init = 1; |
3053 | mode++; | |
3054 | } | |
3055 | if (init) { | |
3056 | switch (fd) { | |
3057 | case 0: | |
3058 | stdio = PerlSIO_stdin; | |
3059 | break; | |
3060 | case 1: | |
3061 | stdio = PerlSIO_stdout; | |
3062 | break; | |
3063 | case 2: | |
3064 | stdio = PerlSIO_stderr; | |
3065 | break; | |
3066 | } | |
3067 | } | |
3068 | else { | |
3069 | stdio = PerlSIO_fdopen(fd, mode = | |
3070 | PerlIOStdio_mode(mode, tmode)); | |
3071 | } | |
3072 | if (stdio) { | |
d9dac8cd NIS |
3073 | if (!f) { |
3074 | f = PerlIO_allocate(aTHX); | |
3075 | } | |
a33cf58c | 3076 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3077 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3078 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3079 | } |
14a5cf38 JH |
3080 | return f; |
3081 | } | |
0a20f69b | 3082 | PerlLIO_close(fd); |
14a5cf38 JH |
3083 | } |
3084 | } | |
ee518936 | 3085 | return NULL; |
9e353e3b NIS |
3086 | } |
3087 | ||
1751d015 | 3088 | PerlIO * |
ecdeb87c | 3089 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3090 | { |
3091 | /* This assumes no layers underneath - which is what | |
3092 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3093 | */ | |
ecdeb87c | 3094 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3095 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3096 | const int fd = fileno(stdio); |
9217ff3f | 3097 | char mode[8]; |
ecdeb87c | 3098 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3099 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3100 | if (dfd >= 0) { |
3101 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3102 | goto set_this; | |
ecdeb87c NIS |
3103 | } |
3104 | else { | |
6f207bd3 | 3105 | NOOP; |
ecdeb87c NIS |
3106 | /* FIXME: To avoid messy error recovery if dup fails |
3107 | re-use the existing stdio as though flag was not set | |
3108 | */ | |
3109 | } | |
3110 | } | |
9217ff3f NIS |
3111 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3112 | set_this: | |
694c95cf | 3113 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3114 | if(stdio) { |
3115 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3116 | } | |
1751d015 NIS |
3117 | } |
3118 | return f; | |
3119 | } | |
3120 | ||
0d7a5398 NIS |
3121 | static int |
3122 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3123 | { | |
96a5add6 AL |
3124 | PERL_UNUSED_CONTEXT; |
3125 | ||
0d7a5398 | 3126 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3127 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3128 | */ |
ef8eacb8 AT |
3129 | # if defined(__UCLIBC__) |
3130 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3131 | f->__filedes = -1; | |
3132 | return 1; | |
3133 | # elif defined(__GLIBC__) | |
0d7a5398 | 3134 | /* There may be a better way for GLIBC: |
37725cdc | 3135 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3136 | */ |
3137 | f->_fileno = -1; | |
3138 | return 1; | |
bdea967c | 3139 | # elif defined(__sun) |
f5992bc4 | 3140 | PERL_UNUSED_ARG(f); |
cfedb851 | 3141 | return 0; |
0d7a5398 NIS |
3142 | # elif defined(__hpux) |
3143 | f->__fileH = 0xff; | |
3144 | f->__fileL = 0xff; | |
3145 | return 1; | |
9837d373 | 3146 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3147 | your platform does not have special entry try this one. |
9837d373 NIS |
3148 | [For OSF only have confirmation for Tru64 (alpha) |
3149 | but assume other OSFs will be similar.] | |
37725cdc | 3150 | */ |
9837d373 | 3151 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3152 | f->_file = -1; |
3153 | return 1; | |
3154 | # elif defined(__FreeBSD__) | |
3155 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3156 | - we could insert a dummy func in the _close function entry |
3157 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3158 | */ |
3159 | f->_file = -1; | |
0c49ea6a SU |
3160 | return 1; |
3161 | # elif defined(__OpenBSD__) | |
3162 | /* There may be a better way on OpenBSD: | |
3163 | - we could insert a dummy func in the _close function entry | |
3164 | f->_close = (int (*)(void *)) dummy_close; | |
3165 | */ | |
3166 | f->_file = -1; | |
0d7a5398 | 3167 | return 1; |
59ad941d IZ |
3168 | # elif defined(__EMX__) |
3169 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3170 | f->_handle = -1; | |
3171 | return 1; | |
0d7a5398 NIS |
3172 | # elif defined(__CYGWIN__) |
3173 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3174 | - we could insert a dummy func in the _close function entry |
3175 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3176 | */ |
3177 | f->_file = -1; | |
3178 | return 1; | |
3179 | # elif defined(WIN32) | |
378eeda7 | 3180 | # if defined(UNDER_CE) |
b475b3e6 JH |
3181 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3182 | structure at all | |
3183 | */ | |
0d7a5398 NIS |
3184 | # else |
3185 | f->_file = -1; | |
3186 | # endif | |
3187 | return 1; | |
3188 | # else | |
3189 | #if 0 | |
37725cdc | 3190 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3191 | (which isn't thread safe) instead |
37725cdc | 3192 | */ |
0d7a5398 NIS |
3193 | # error "Don't know how to set FILE.fileno on your platform" |
3194 | #endif | |
8772537c | 3195 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3196 | return 0; |
3197 | # endif | |
3198 | } | |
3199 | ||
1751d015 | 3200 | IV |
f62ce20a | 3201 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3202 | { |
c4420975 | 3203 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3204 | if (!stdio) { |
3205 | errno = EBADF; | |
3206 | return -1; | |
3207 | } | |
9217ff3f | 3208 | else { |
de009b76 | 3209 | const int fd = fileno(stdio); |
0d7a5398 | 3210 | int invalidate = 0; |
bbfd922f | 3211 | IV result = 0; |
1d791a44 | 3212 | int dupfd = -1; |
4ee39169 | 3213 | dSAVEDERRNO; |
a2e578da MHM |
3214 | #ifdef USE_ITHREADS |
3215 | dVAR; | |
3216 | #endif | |
0d7a5398 | 3217 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3218 | /* Socks lib overrides close() but stdio isn't linked to |
3219 | that library (though we are) - so we must call close() | |
3220 | on sockets on stdio's behalf. | |
3221 | */ | |
0d7a5398 NIS |
3222 | int optval; |
3223 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3224 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3225 | invalidate = 1; |
0d7a5398 | 3226 | #endif |
d8723f43 NC |
3227 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3228 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3229 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3230 | trying to close an already closed handle which somehow it still has | |
3231 | a reference to. (via.xs, I'm looking at you). */ | |
3232 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3233 | /* File descriptor still in use */ | |
0d7a5398 | 3234 | invalidate = 1; |
d8723f43 | 3235 | } |
0d7a5398 | 3236 | if (invalidate) { |
6b4ce6c8 AL |
3237 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3238 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3239 | return 0; | |
3240 | if (stdio == stdout || stdio == stderr) | |
3241 | return PerlIO_flush(f); | |
37725cdc NIS |
3242 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3243 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3244 | fileno slot of the FILE * | |
3245 | */ | |
bbfd922f | 3246 | result = PerlIO_flush(f); |
4ee39169 | 3247 | SAVE_ERRNO; |
6b4ce6c8 | 3248 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3249 | if (!invalidate) { |
9bab90c0 NC |
3250 | #ifdef USE_ITHREADS |
3251 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3252 | /* Right. We need a mutex here because for a brief while we |
3253 | will have the situation that fd is actually closed. Hence if | |
3254 | a second thread were to get into this block, its dup() would | |
3255 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3256 | Then if we get to the dup2() first, we blat the fd back |
3257 | (messing up its temporary as a side effect) only for it to | |
3258 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3259 | ||
3260 | /* There is, of course, a race condition, that any other thread | |
3261 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3262 | for the duration of this little manoeuvrer. Perhaps we |
3263 | should hold an IO mutex for the duration of every IO | |
3264 | operation if we know that invalidate doesn't work on this | |
3265 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3266 | |
3267 | Except that correctness trumps speed. | |
3268 | Advice from klortho #11912. */ | |
3269 | #endif | |
6b4ce6c8 | 3270 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3271 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3272 | if (dupfd < 0) { |
3273 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3274 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3275 | recover from here, or if closing this particular FILE * | |
3276 | is a good idea now. */ | |
3277 | } | |
3278 | #endif | |
3279 | } | |
94ccb807 JH |
3280 | } else { |
3281 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3282 | } |
0d7a5398 | 3283 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3284 | /* We treat error from stdio as success if we invalidated |
3285 | errno may NOT be expected EBADF | |
e8529473 NIS |
3286 | */ |
3287 | if (invalidate && result != 0) { | |
4ee39169 | 3288 | RESTORE_ERRNO; |
0d7a5398 | 3289 | result = 0; |
37725cdc | 3290 | } |
6b4ce6c8 AL |
3291 | #ifdef SOCKS5_VERSION_NAME |
3292 | /* in SOCKS' case, let close() determine return value */ | |
3293 | result = close(fd); | |
3294 | #endif | |
1d791a44 | 3295 | if (dupfd >= 0) { |
0d7a5398 | 3296 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3297 | PerlLIO_close(dupfd); |
711e8db2 | 3298 | #ifdef USE_ITHREADS |
9bab90c0 | 3299 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3300 | #endif |
9217ff3f NIS |
3301 | } |
3302 | return result; | |
37725cdc | 3303 | } |
1751d015 NIS |
3304 | } |
3305 | ||
9e353e3b | 3306 | SSize_t |
f62ce20a | 3307 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3308 | { |
97aff369 | 3309 | dVAR; |
abf9167d | 3310 | FILE * s; |
14a5cf38 | 3311 | SSize_t got = 0; |
abf9167d DM |
3312 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3313 | return -1; | |
3314 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3315 | for (;;) { |
3316 | if (count == 1) { | |
3317 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3318 | /* | |
3319 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3320 | * stdio does not do that for fread() | |
3321 | */ | |
de009b76 | 3322 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3323 | if (ch != EOF) { |
3324 | *buf = ch; | |
3325 | got = 1; | |
3326 | } | |
14a5cf38 | 3327 | } |
4d948241 NIS |
3328 | else |
3329 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3330 | if (got == 0 && PerlSIO_ferror(s)) |
3331 | got = -1; | |
42a7a32f | 3332 | if (got >= 0 || errno != EINTR) |
4d948241 | 3333 | break; |
abf9167d DM |
3334 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3335 | return -1; | |
42a7a32f | 3336 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3337 | } |
14a5cf38 | 3338 | return got; |
9e353e3b NIS |
3339 | } |
3340 | ||
3341 | SSize_t | |
f62ce20a | 3342 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3343 | { |
14a5cf38 | 3344 | SSize_t unread = 0; |
c4420975 | 3345 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3346 | |
313e59c8 | 3347 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3348 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3349 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3350 | STDCHAR *base = PerlIO_get_base(f); | |
3351 | SSize_t cnt = PerlIO_get_cnt(f); | |
3352 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3353 | SSize_t avail = ptr - base; | |
3354 | if (avail > 0) { | |
3355 | if (avail > count) { | |
3356 | avail = count; | |
3357 | } | |
3358 | ptr -= avail; | |
3359 | Move(buf-avail,ptr,avail,STDCHAR); | |
3360 | count -= avail; | |
3361 | unread += avail; | |
3362 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3363 | if (PerlSIO_feof(s) && unread >= 0) |
3364 | PerlSIO_clearerr(s); | |
3365 | } | |
3366 | } | |
313e59c8 NIS |
3367 | else |
3368 | #endif | |
3369 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3370 | /* We can get pointer to buffer but not its base |
3371 | Do ungetc() but check chars are ending up in the | |
3372 | buffer | |
3373 | */ | |
3374 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3375 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3376 | while (count > 0) { | |
de009b76 | 3377 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3378 | if (ungetc(ch,s) != ch) { |
3379 | /* ungetc did not work */ | |
3380 | break; | |
3381 | } | |
3382 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3383 | /* Did not change pointer as expected */ | |
375ed12a JH |
3384 | if (fgetc(s) != EOF) /* get char back again */ |
3385 | break; | |
9f7cd136 NIS |
3386 | } |
3387 | /* It worked ! */ | |
3388 | count--; | |
3389 | unread++; | |
93679785 NIS |
3390 | } |
3391 | } | |
3392 | ||
3393 | if (count > 0) { | |
3394 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3395 | } |
3396 | return unread; | |
9e353e3b NIS |
3397 | } |
3398 | ||
3399 | SSize_t | |
f62ce20a | 3400 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3401 | { |
97aff369 | 3402 | dVAR; |
4d948241 | 3403 | SSize_t got; |
abf9167d DM |
3404 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3405 | return -1; | |
4d948241 NIS |
3406 | for (;;) { |
3407 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3408 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3409 | if (got >= 0 || errno != EINTR) |
4d948241 | 3410 | break; |
abf9167d DM |
3411 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3412 | return -1; | |
42a7a32f | 3413 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3414 | } |
3415 | return got; | |
9e353e3b NIS |
3416 | } |
3417 | ||
94a175e1 | 3418 | IV |
f62ce20a | 3419 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3420 | { |
c4420975 | 3421 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3422 | PERL_UNUSED_CONTEXT; |
3423 | ||
94a175e1 | 3424 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3425 | } |
3426 | ||
3427 | Off_t | |
f62ce20a | 3428 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3429 | { |
c4420975 | 3430 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3431 | PERL_UNUSED_CONTEXT; |
3432 | ||
94a175e1 | 3433 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3434 | } |
3435 | ||
3436 | IV | |
f62ce20a | 3437 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3438 | { |
c4420975 | 3439 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3440 | PERL_UNUSED_CONTEXT; |
3441 | ||
14a5cf38 JH |
3442 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3443 | return PerlSIO_fflush(stdio); | |
3444 | } | |
3445 | else { | |
6f207bd3 | 3446 | NOOP; |
88b61e10 | 3447 | #if 0 |
14a5cf38 JH |
3448 | /* |
3449 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3450 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3451 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3452 | * layer read-to-read |
14a5cf38 JH |
3453 | */ |
3454 | /* | |
71200d45 | 3455 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3456 | */ |
4ee39169 | 3457 | dSAVE_ERRNO; |
14a5cf38 | 3458 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3459 | RESTORE_ERRNO; |
88b61e10 | 3460 | #endif |
14a5cf38 JH |
3461 | } |
3462 | return 0; | |
9e353e3b NIS |
3463 | } |
3464 | ||
3465 | IV | |
f62ce20a | 3466 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3467 | { |
96a5add6 AL |
3468 | PERL_UNUSED_CONTEXT; |
3469 | ||
14a5cf38 | 3470 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3471 | } |
3472 | ||
3473 | IV | |
f62ce20a | 3474 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3475 | { |
96a5add6 AL |
3476 | PERL_UNUSED_CONTEXT; |
3477 | ||
263df5f1 | 3478 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3479 | } |
3480 | ||
3481 | void | |
f62ce20a | 3482 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3483 | { |
96a5add6 AL |
3484 | PERL_UNUSED_CONTEXT; |
3485 | ||
14a5cf38 | 3486 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3487 | } |
3488 | ||
3489 | void | |
f62ce20a | 3490 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3491 | { |
96a5add6 AL |
3492 | PERL_UNUSED_CONTEXT; |
3493 | ||
9e353e3b | 3494 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3495 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3496 | #else |
bd61b366 | 3497 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3498 | #endif |
3499 | } | |
3500 | ||
3501 | #ifdef FILE_base | |
3502 | STDCHAR * | |
f62ce20a | 3503 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3504 | { |
c4420975 | 3505 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3506 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3507 | } |
3508 | ||
3509 | Size_t | |
f62ce20a | 3510 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3511 | { |
c4420975 | 3512 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3513 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3514 | } |
3515 | #endif | |
3516 | ||
3517 | #ifdef USE_STDIO_PTR | |
3518 | STDCHAR * | |
f62ce20a | 3519 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3520 | { |
c4420975 | 3521 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3522 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3523 | } |
3524 | ||
3525 | SSize_t | |
f62ce20a | 3526 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3527 | { |
c4420975 | 3528 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3529 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3530 | } |
3531 | ||
3532 | void | |
f62ce20a | 3533 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3534 | { |
c4420975 | 3535 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3536 | if (ptr != NULL) { |
9e353e3b | 3537 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3538 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3539 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3540 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3541 | #endif |
3542 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3543 | /* |
71200d45 | 3544 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3545 | */ |
3546 | return; | |
9e353e3b | 3547 | #endif |
22569500 | 3548 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3549 | PerlProc_abort(); |
22569500 | 3550 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3551 | } |
3552 | /* | |
71200d45 | 3553 | * Now (or only) set cnt |
14a5cf38 | 3554 | */ |
9e353e3b | 3555 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3556 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3557 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3558 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3559 | PerlSIO_set_ptr(stdio, |
3560 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3561 | cnt)); | |
22569500 | 3562 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3563 | PerlProc_abort(); |
22569500 NIS |
3564 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3565 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3566 | } |
3567 | ||
93679785 | 3568 | |
9e353e3b NIS |
3569 | #endif |
3570 | ||
93679785 NIS |
3571 | IV |
3572 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3573 | { | |
abf9167d | 3574 | FILE * stdio; |
93679785 | 3575 | int c; |
96a5add6 | 3576 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3577 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3578 | return -1; | |
3579 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3580 | |
93679785 NIS |
3581 | /* |
3582 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3583 | */ | |
3584 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3585 | if (PerlSIO_fflush(stdio) != 0) | |
3586 | return EOF; | |
3587 | } | |
f3be3723 BL |
3588 | for (;;) { |
3589 | c = PerlSIO_fgetc(stdio); | |
3590 | if (c != EOF) | |
3591 | break; | |
3592 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3593 | return EOF; | |
abf9167d DM |
3594 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3595 | return -1; | |
f3be3723 BL |
3596 | SETERRNO(0,0); |
3597 | } | |
93679785 NIS |
3598 | |
3599 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3600 | |
3601 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3602 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3603 | /* Fake ungetc() to the real buffer in case system's ungetc |
3604 | goes elsewhere | |
3605 | */ | |
3606 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3607 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3608 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3609 | if (ptr == base+1) { | |
3610 | *--ptr = (STDCHAR) c; | |
3611 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3612 | if (PerlSIO_feof(stdio)) | |
3613 | PerlSIO_clearerr(stdio); | |
3614 | return 0; | |
3615 | } | |
3616 | } | |
313e59c8 NIS |
3617 | else |
3618 | #endif | |
3619 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3620 | STDCHAR ch = c; |
3621 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3622 | return 0; | |
3623 | } | |
3624 | } | |
93679785 NIS |
3625 | #endif |
3626 | ||
93679785 | 3627 | /* If buffer snoop scheme above fails fall back to |
9f7cd136 | 3628 | using ungetc(). |
93679785 NIS |
3629 | */ |
3630 | if (PerlSIO_ungetc(c, stdio) != c) | |
3631 | return EOF; | |
5876737a | 3632 | |
93679785 NIS |
3633 | return 0; |
3634 | } | |
3635 | ||
3636 | ||
3637 | ||
27da23d5 | 3638 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3639 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3640 | "stdio", |
3641 | sizeof(PerlIOStdio), | |
86e05cf2 | 3642 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3643 | PerlIOStdio_pushed, |
2376d97d | 3644 | PerlIOBase_popped, |
14a5cf38 | 3645 | PerlIOStdio_open, |
86e05cf2 | 3646 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3647 | NULL, |
3648 | PerlIOStdio_fileno, | |
71200d45 | 3649 | PerlIOStdio_dup, |
14a5cf38 JH |
3650 | PerlIOStdio_read, |
3651 | PerlIOStdio_unread, | |
3652 | PerlIOStdio_write, | |
3653 | PerlIOStdio_seek, | |
3654 | PerlIOStdio_tell, | |
3655 | PerlIOStdio_close, | |
3656 | PerlIOStdio_flush, | |
3657 | PerlIOStdio_fill, | |
3658 | PerlIOStdio_eof, | |
3659 | PerlIOStdio_error, | |
3660 | PerlIOStdio_clearerr, | |
3661 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3662 | #ifdef FILE_base |
14a5cf38 JH |
3663 | PerlIOStdio_get_base, |
3664 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3665 | #else |
14a5cf38 JH |
3666 | NULL, |
3667 | NULL, | |
9e353e3b NIS |
3668 | #endif |
3669 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3670 | PerlIOStdio_get_ptr, |
3671 | PerlIOStdio_get_cnt, | |
15b61c98 | 3672 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3673 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3674 | # else |
3675 | NULL, | |
3676 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3677 | #else | |
3678 | NULL, | |
14a5cf38 JH |
3679 | NULL, |
3680 | NULL, | |
15b61c98 | 3681 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3682 | }; |
3683 | ||
b9d6bf13 JH |
3684 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3685 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3686 | FILE * |
81428673 | 3687 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3688 | { |
e87a358a | 3689 | dTHX; |
81428673 NIS |
3690 | FILE *stdio = NULL; |
3691 | if (PerlIOValid(f)) { | |
3692 | char buf[8]; | |
375ed12a JH |
3693 | int fd = PerlIO_fileno(f); |
3694 | if (fd < 0) { | |
3695 | return NULL; | |
3696 | } | |
81428673 NIS |
3697 | PerlIO_flush(f); |
3698 | if (!mode || !*mode) { | |
3699 | mode = PerlIO_modestr(f, buf); | |
3700 | } | |
3701 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3702 | if (stdio) { | |
3703 | PerlIOl *l = *f; | |
9f75cc58 | 3704 | PerlIO *f2; |
81428673 NIS |
3705 | /* De-link any lower layers so new :stdio sticks */ |
3706 | *f = NULL; | |
a0714e2c | 3707 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3708 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3709 | s->stdio = stdio; |
6b54a403 | 3710 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3711 | /* Link previous lower layers under new one */ |
3712 | *PerlIONext(f) = l; | |
3713 | } | |
3714 | else { | |
3715 | /* restore layers list */ | |
3716 | *f = l; | |
3717 | } | |
a33cf58c | 3718 | } |
14a5cf38 JH |
3719 | } |
3720 | return stdio; | |
9e353e3b NIS |
3721 | } |
3722 | ||
81428673 | 3723 | |
9e353e3b NIS |
3724 | FILE * |
3725 | PerlIO_findFILE(PerlIO *f) | |
3726 | { | |
14a5cf38 | 3727 | PerlIOl *l = *f; |
bbbc33d0 | 3728 | FILE *stdio; |
14a5cf38 JH |
3729 | while (l) { |
3730 | if (l->tab == &PerlIO_stdio) { | |
3731 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3732 | return s->stdio; | |
3733 | } | |
3734 | l = *PerlIONext(&l); | |
f7e7eb72 | 3735 | } |
4b069b44 | 3736 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3737 | /* However, we're not really exporting a FILE * to someone else (who |
3738 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3739 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3740 | descriptor. We have to do this, because if the loop above returns you |
3741 | the FILE *, then *it* didn't increase any reference count. So there's | |
3742 | only one way to be consistent. */ | |
3743 | stdio = PerlIO_exportFILE(f, NULL); | |
3744 | if (stdio) { | |
3745 | const int fd = fileno(stdio); | |
3746 | if (fd >= 0) | |
3747 | PerlIOUnix_refcnt_dec(fd); | |
3748 | } | |
3749 | return stdio; | |
9e353e3b NIS |
3750 | } |
3751 | ||
b9d6bf13 | 3752 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3753 | void |
3754 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3755 | { | |
27da23d5 | 3756 | dVAR; |
22569500 NIS |
3757 | PerlIOl *l; |
3758 | while ((l = *p)) { | |
3759 | if (l->tab == &PerlIO_stdio) { | |
3760 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3761 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3762 | const int fd = fileno(f); |
3763 | if (fd >= 0) | |
3764 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3765 | { |
3766 | dTHX; | |
3767 | PerlIO_pop(aTHX_ p); | |
3768 | } | |
22569500 NIS |
3769 | return; |
3770 | } | |
3771 | } | |
3772 | p = PerlIONext(p); | |
3773 | } | |
3774 | return; | |
9e353e3b NIS |
3775 | } |
3776 | ||
3777 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3778 | /* |
71200d45 | 3779 | * perlio buffer layer |
14a5cf38 | 3780 | */ |
9e353e3b | 3781 | |
5e2ab84b | 3782 | IV |
2dc2558e | 3783 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3784 | { |
14a5cf38 | 3785 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3786 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3787 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3788 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3789 | } | |
4b069b44 | 3790 | if (*PerlIONext(f)) { |
de009b76 | 3791 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3792 | if (posn != (Off_t) - 1) { |
3793 | b->posn = posn; | |
3794 | } | |
14a5cf38 | 3795 | } |
2dc2558e | 3796 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3797 | } |
3798 | ||
9e353e3b | 3799 | PerlIO * |
14a5cf38 JH |
3800 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3801 | IV n, const char *mode, int fd, int imode, int perm, | |
3802 | PerlIO *f, int narg, SV **args) | |
3803 | { | |
04892f78 | 3804 | if (PerlIOValid(f)) { |
14a5cf38 | 3805 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3806 | PerlIO_funcs *tab = |
3807 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3808 | if (tab && tab->Open) | |
3809 | next = | |
3810 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3811 | next, narg, args); | |
2dc2558e | 3812 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3813 | return NULL; |
3814 | } | |
3815 | } | |
3816 | else { | |
04892f78 | 3817 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3818 | int init = 0; |
3b6c1aba | 3819 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3820 | init = 1; |
3821 | /* | |
71200d45 | 3822 | * mode++; |
14a5cf38 JH |
3823 | */ |
3824 | } | |
67363c0d JH |
3825 | if (tab && tab->Open) |
3826 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3827 | f, narg, args); | |
3828 | else | |
3829 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3830 | if (f) { |
22569500 | 3831 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3832 | /* |
3833 | * if push fails during open, open fails. close will pop us. | |
3834 | */ | |
3835 | PerlIO_close (f); | |
3836 | return NULL; | |
3837 | } else { | |
3838 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3839 | if (init && fd == 2) { |
3840 | /* | |
3841 | * Initial stderr is unbuffered | |
3842 | */ | |
3843 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3844 | } | |
23b84778 IZ |
3845 | #ifdef PERLIO_USING_CRLF |
3846 | # ifdef PERLIO_IS_BINMODE_FD | |
3847 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3848 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3849 | else |
3850 | # endif | |
3851 | /* | |
3852 | * do something about failing setmode()? --jhi | |
3853 | */ | |
3854 | PerlLIO_setmode(fd, O_BINARY); | |
3855 | #endif | |
8c8488cd | 3856 | #ifdef VMS |
8c8488cd CB |
3857 | /* Enable line buffering with record-oriented regular files |
3858 | * so we don't introduce an extraneous record boundary when | |
3859 | * the buffer fills up. | |
3860 | */ | |
3861 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3862 | Stat_t st; | |
3863 | if (PerlLIO_fstat(fd, &st) == 0 | |
3864 | && S_ISREG(st.st_mode) | |
3865 | && (st.st_fab_rfm == FAB$C_VAR | |
3866 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3867 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3868 | } | |
3869 | } | |
3870 | #endif | |
14a5cf38 JH |
3871 | } |
3872 | } | |
ee518936 | 3873 | } |
14a5cf38 | 3874 | return f; |
9e353e3b NIS |
3875 | } |
3876 | ||
14a5cf38 JH |
3877 | /* |
3878 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3879 | * read or write state. For write state, we put the postponed data through |
3880 | * the next layers. For read state, we seek() the next layers to the | |
3881 | * offset given by current position in the buffer, and discard the buffer | |
3882 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3883 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3884 | */ |
9e353e3b | 3885 | IV |
f62ce20a | 3886 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3887 | { |
dcda55fc | 3888 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3889 | int code = 0; |
04892f78 | 3890 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3891 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3892 | /* | |
71200d45 | 3893 | * write() the buffer |
14a5cf38 | 3894 | */ |
de009b76 AL |
3895 | const STDCHAR *buf = b->buf; |
3896 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3897 | while (p < b->ptr) { |
3898 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3899 | if (count > 0) { | |
3900 | p += count; | |
3901 | } | |
3902 | else if (count < 0 || PerlIO_error(n)) { | |
3903 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3904 | code = -1; | |
3905 | break; | |
3906 | } | |
3907 | } | |
3908 | b->posn += (p - buf); | |
3909 | } | |
3910 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3911 | STDCHAR *buf = PerlIO_get_base(f); | |
3912 | /* | |
71200d45 | 3913 | * Note position change |
14a5cf38 JH |
3914 | */ |
3915 | b->posn += (b->ptr - buf); | |
3916 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3917 | /* We did not consume all of it - try and seek downstream to |
3918 | our logical position | |
14a5cf38 | 3919 | */ |
4b069b44 | 3920 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3921 | /* Reload n as some layers may pop themselves on seek */ |
3922 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3923 | } |
ba5c3fe9 | 3924 | else { |
4b069b44 NIS |
3925 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3926 | data is lost for good - so return saying "ok" having undone | |
3927 | the position adjust | |
3928 | */ | |
3929 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3930 | return code; |
3931 | } | |
14a5cf38 JH |
3932 | } |
3933 | } | |
3934 | b->ptr = b->end = b->buf; | |
3935 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3936 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3937 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3938 | code = -1; |
3939 | return code; | |
6f9d8c32 NIS |
3940 | } |
3941 | ||
93c2c2ec IZ |
3942 | /* This discards the content of the buffer after b->ptr, and rereads |
3943 | * the buffer from the position off in the layer downstream; here off | |
3944 | * is at offset corresponding to b->ptr - b->buf. | |
3945 | */ | |
06da4f11 | 3946 | IV |
f62ce20a | 3947 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3948 | { |
dcda55fc | 3949 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3950 | PerlIO *n = PerlIONext(f); |
3951 | SSize_t avail; | |
3952 | /* | |
4b069b44 NIS |
3953 | * Down-stream flush is defined not to loose read data so is harmless. |
3954 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3955 | */ |
93c2c2ec | 3956 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3957 | return -1; |
3958 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3959 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3960 | |
3961 | if (!b->buf) | |
22569500 | 3962 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3963 | |
0f0eef27 | 3964 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3965 | |
14a5cf38 | 3966 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3967 | |
3968 | if (!PerlIOValid(n)) { | |
3969 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3970 | return -1; | |
3971 | } | |
3972 | ||
14a5cf38 JH |
3973 | if (PerlIO_fast_gets(n)) { |
3974 | /* | |
04892f78 | 3975 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3976 | * ->Read() because that will loop till it gets what we asked for |
3977 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3978 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3979 | */ |
3980 | avail = PerlIO_get_cnt(n); | |
3981 | if (avail <= 0) { | |
3982 | avail = PerlIO_fill(n); | |
3983 | if (avail == 0) | |
3984 | avail = PerlIO_get_cnt(n); | |
3985 | else { | |
3986 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3987 | avail = 0; | |
3988 | } | |
3989 | } | |
3990 | if (avail > 0) { | |
3991 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3992 | const SSize_t cnt = avail; |
eb160463 | 3993 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3994 | avail = b->bufsiz; |
3995 | Copy(ptr, b->buf, avail, STDCHAR); | |
3996 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3997 | } | |
3998 | } | |
3999 | else { | |
4000 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4001 | } | |
4002 | if (avail <= 0) { | |
4003 | if (avail == 0) | |
4004 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4005 | else | |
4006 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
4007 | return -1; | |
4008 | } | |
4009 | b->end = b->buf + avail; | |
4010 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4011 | return 0; | |
06da4f11 NIS |
4012 | } |
4013 | ||
6f9d8c32 | 4014 | SSize_t |
f62ce20a | 4015 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4016 | { |
04892f78 | 4017 | if (PerlIOValid(f)) { |
dcda55fc | 4018 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4019 | if (!b->ptr) |
4020 | PerlIO_get_base(f); | |
f62ce20a | 4021 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4022 | } |
4023 | return 0; | |
6f9d8c32 NIS |
4024 | } |
4025 | ||
9e353e3b | 4026 | SSize_t |
f62ce20a | 4027 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4028 | { |
14a5cf38 | 4029 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4030 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4031 | SSize_t unread = 0; |
4032 | SSize_t avail; | |
4033 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4034 | PerlIO_flush(f); | |
4035 | if (!b->buf) | |
4036 | PerlIO_get_base(f); | |
4037 | if (b->buf) { | |
4038 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4039 | /* | |
4040 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4041 | * which have been read back to buffer start |
14a5cf38 JH |
4042 | */ |
4043 | avail = (b->ptr - b->buf); | |
4044 | } | |
4045 | else { | |
4046 | /* | |
4047 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4048 | * unread |
14a5cf38 JH |
4049 | */ |
4050 | avail = b->bufsiz; | |
4051 | b->end = b->buf + avail; | |
4052 | b->ptr = b->end; | |
4053 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4054 | /* | |
71200d45 | 4055 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4056 | */ |
4057 | b->posn -= b->bufsiz; | |
4058 | } | |
94e529cc | 4059 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4060 | /* |
71200d45 | 4061 | * If we have space for more than count, just move count |
14a5cf38 JH |
4062 | */ |
4063 | avail = count; | |
4064 | } | |
4065 | if (avail > 0) { | |
4066 | b->ptr -= avail; | |
4067 | buf -= avail; | |
4068 | /* | |
4069 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4070 | * there |
14a5cf38 JH |
4071 | */ |
4072 | if (buf != b->ptr) { | |
4073 | Copy(buf, b->ptr, avail, STDCHAR); | |
4074 | } | |
4075 | count -= avail; | |
4076 | unread += avail; | |
4077 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4078 | } | |
4079 | } | |
93679785 NIS |
4080 | if (count > 0) { |
4081 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4082 | } | |
14a5cf38 | 4083 | return unread; |
760ac839 LW |
4084 | } |
4085 | ||
9e353e3b | 4086 | SSize_t |
f62ce20a | 4087 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4088 | { |
de009b76 | 4089 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4090 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4091 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4092 | Size_t written = 0; |
4093 | if (!b->buf) | |
4094 | PerlIO_get_base(f); | |
4095 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4096 | return 0; | |
0678cb22 NIS |
4097 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4098 | if (PerlIO_flush(f) != 0) { | |
4099 | return 0; | |
4100 | } | |
4101 | } | |
ee56a6b9 CS |
4102 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4103 | flushptr = buf + count; | |
4104 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4105 | --flushptr; | |
4106 | } | |
14a5cf38 JH |
4107 | while (count > 0) { |
4108 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4109 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4110 | avail = count; |
ee56a6b9 CS |
4111 | if (flushptr > buf && flushptr <= buf + avail) |
4112 | avail = flushptr - buf; | |
14a5cf38 | 4113 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4114 | if (avail) { |
4115 | Copy(buf, b->ptr, avail, STDCHAR); | |
4116 | count -= avail; | |
4117 | buf += avail; | |
4118 | written += avail; | |
4119 | b->ptr += avail; | |
4120 | if (buf == flushptr) | |
4121 | PerlIO_flush(f); | |
14a5cf38 JH |
4122 | } |
4123 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4124 | if (PerlIO_flush(f) == -1) |
4125 | return -1; | |
14a5cf38 JH |
4126 | } |
4127 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4128 | PerlIO_flush(f); | |
4129 | return written; | |
9e353e3b NIS |
4130 | } |
4131 | ||
94a175e1 | 4132 | IV |
f62ce20a | 4133 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4134 | { |
14a5cf38 JH |
4135 | IV code; |
4136 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4137 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4138 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4139 | if (code == 0) { | |
de009b76 | 4140 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4141 | b->posn = PerlIO_tell(PerlIONext(f)); |
4142 | } | |
9e353e3b | 4143 | } |
14a5cf38 | 4144 | return code; |
9e353e3b NIS |
4145 | } |
4146 | ||
4147 | Off_t | |
f62ce20a | 4148 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4149 | { |
dcda55fc | 4150 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4151 | /* |
71200d45 | 4152 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4153 | */ |
4154 | Off_t posn = b->posn; | |
37725cdc | 4155 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4156 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4157 | #if 1 | |
4158 | /* As O_APPEND files are normally shared in some sense it is better | |
4159 | to flush : | |
4160 | */ | |
4161 | PerlIO_flush(f); | |
4162 | #else | |
37725cdc | 4163 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4164 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4165 | #endif | |
4166 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4167 | } | |
14a5cf38 JH |
4168 | if (b->buf) { |
4169 | /* | |
71200d45 | 4170 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4171 | */ |
4172 | posn += (b->ptr - b->buf); | |
4173 | } | |
4174 | return posn; | |
9e353e3b NIS |
4175 | } |
4176 | ||
4177 | IV | |
44798d05 NIS |
4178 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4179 | { | |
de009b76 AL |
4180 | const IV code = PerlIOBase_popped(aTHX_ f); |
4181 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4182 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4183 | Safefree(b->buf); | |
4184 | } | |
dcda55fc | 4185 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4186 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4187 | return code; | |
4188 | } | |
4189 | ||
4190 | IV | |
f62ce20a | 4191 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4192 | { |
de009b76 AL |
4193 | const IV code = PerlIOBase_close(aTHX_ f); |
4194 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4195 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4196 | Safefree(b->buf); |
14a5cf38 | 4197 | } |
dcda55fc | 4198 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4199 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4200 | return code; | |
760ac839 LW |
4201 | } |
4202 | ||
9e353e3b | 4203 | STDCHAR * |
f62ce20a | 4204 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4205 | { |
dcda55fc | 4206 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4207 | if (!b->buf) |
4208 | PerlIO_get_base(f); | |
4209 | return b->ptr; | |
9e353e3b NIS |
4210 | } |
4211 | ||
05d1247b | 4212 | SSize_t |
f62ce20a | 4213 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4214 | { |
dcda55fc | 4215 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4216 | if (!b->buf) |
4217 | PerlIO_get_base(f); | |
4218 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4219 | return (b->end - b->ptr); | |
4220 | return 0; | |
9e353e3b NIS |
4221 | } |
4222 | ||
4223 | STDCHAR * | |
f62ce20a | 4224 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4225 | { |
dcda55fc | 4226 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4227 | PERL_UNUSED_CONTEXT; |
4228 | ||
14a5cf38 JH |
4229 | if (!b->buf) { |
4230 | if (!b->bufsiz) | |
1810cd7c | 4231 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4232 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4233 | if (!b->buf) { |
4234 | b->buf = (STDCHAR *) & b->oneword; | |
4235 | b->bufsiz = sizeof(b->oneword); | |
4236 | } | |
dcda55fc | 4237 | b->end = b->ptr = b->buf; |
06da4f11 | 4238 | } |
14a5cf38 | 4239 | return b->buf; |
9e353e3b NIS |
4240 | } |
4241 | ||
4242 | Size_t | |
f62ce20a | 4243 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4244 | { |
dcda55fc | 4245 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4246 | if (!b->buf) |
4247 | PerlIO_get_base(f); | |
4248 | return (b->end - b->buf); | |
9e353e3b NIS |
4249 | } |
4250 | ||
4251 | void | |
f62ce20a | 4252 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4253 | { |
dcda55fc | 4254 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4255 | #ifndef DEBUGGING |
4256 | PERL_UNUSED_ARG(cnt); | |
4257 | #endif | |
14a5cf38 JH |
4258 | if (!b->buf) |
4259 | PerlIO_get_base(f); | |
4260 | b->ptr = ptr; | |
b727803b RGS |
4261 | assert(PerlIO_get_cnt(f) == cnt); |
4262 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4263 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4264 | } |
4265 | ||
71200d45 | 4266 | PerlIO * |
ecdeb87c | 4267 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4268 | { |
ecdeb87c | 4269 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4270 | } |
4271 | ||
4272 | ||
4273 | ||
27da23d5 | 4274 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4275 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4276 | "perlio", |
4277 | sizeof(PerlIOBuf), | |
86e05cf2 | 4278 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4279 | PerlIOBuf_pushed, |
44798d05 | 4280 | PerlIOBuf_popped, |
14a5cf38 | 4281 | PerlIOBuf_open, |
86e05cf2 | 4282 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4283 | NULL, |
4284 | PerlIOBase_fileno, | |
71200d45 | 4285 | PerlIOBuf_dup, |
14a5cf38 JH |
4286 | PerlIOBuf_read, |
4287 | PerlIOBuf_unread, | |
4288 | PerlIOBuf_write, | |
4289 | PerlIOBuf_seek, | |
4290 | PerlIOBuf_tell, | |
4291 | PerlIOBuf_close, | |
4292 | PerlIOBuf_flush, | |
4293 | PerlIOBuf_fill, | |
4294 | PerlIOBase_eof, | |
4295 | PerlIOBase_error, | |
4296 | PerlIOBase_clearerr, | |
4297 | PerlIOBase_setlinebuf, | |
4298 | PerlIOBuf_get_base, | |
4299 | PerlIOBuf_bufsiz, | |
4300 | PerlIOBuf_get_ptr, | |
4301 | PerlIOBuf_get_cnt, | |
4302 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4303 | }; |
4304 | ||
66ecd56b | 4305 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4306 | /* |
71200d45 | 4307 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4308 | */ |
5e2ab84b NIS |
4309 | |
4310 | IV | |
f62ce20a | 4311 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4312 | { |
14a5cf38 | 4313 | /* |
71200d45 | 4314 | * Should never happen |
14a5cf38 JH |
4315 | */ |
4316 | PerlIO_flush(f); | |
4317 | return 0; | |
5e2ab84b NIS |
4318 | } |
4319 | ||
4320 | IV | |
f62ce20a | 4321 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4322 | { |
14a5cf38 | 4323 | /* |
71200d45 | 4324 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4325 | */ |
4326 | PerlIO_flush(f); | |
4327 | return PerlIO_close(f); | |
5e2ab84b NIS |
4328 | } |
4329 | ||
94a175e1 | 4330 | IV |
f62ce20a | 4331 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4332 | { |
14a5cf38 | 4333 | /* |
71200d45 | 4334 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4335 | */ |
4336 | PerlIO_flush(f); | |
4337 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4338 | } |
4339 | ||
4340 | ||
4341 | IV | |
f62ce20a | 4342 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4343 | { |
dcda55fc | 4344 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4345 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4346 | Safefree(b->buf); |
14a5cf38 JH |
4347 | b->buf = NULL; |
4348 | } | |
4349 | PerlIO_pop(aTHX_ f); | |
4350 | return 0; | |
5e2ab84b NIS |
4351 | } |
4352 | ||
4353 | void | |
f62ce20a | 4354 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4355 | { |
14a5cf38 JH |
4356 | if (cnt <= 0) { |
4357 | PerlIO_flush(f); | |
4358 | } | |
4359 | else { | |
f62ce20a | 4360 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4361 | } |
5e2ab84b NIS |
4362 | } |
4363 | ||
4364 | IV | |
2dc2558e | 4365 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4366 | { |
de009b76 | 4367 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4368 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4369 | /* |
71200d45 NIS |
4370 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4371 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4372 | */ |
4373 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4374 | (PerlIOBase(PerlIONext(f))-> | |
4375 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4376 | return code; | |
5e2ab84b NIS |
4377 | } |
4378 | ||
4379 | SSize_t | |
f62ce20a | 4380 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4381 | { |
14a5cf38 JH |
4382 | SSize_t avail = PerlIO_get_cnt(f); |
4383 | SSize_t got = 0; | |
94e529cc | 4384 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4385 | avail = count; |
4386 | if (avail > 0) | |
f62ce20a | 4387 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4388 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4389 | const SSize_t more = |
14a5cf38 JH |
4390 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4391 | if (more >= 0 || got == 0) | |
4392 | got += more; | |
4393 | } | |
4394 | return got; | |
5e2ab84b NIS |
4395 | } |
4396 | ||
27da23d5 | 4397 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4398 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4399 | "pending", |
4400 | sizeof(PerlIOBuf), | |
86e05cf2 | 4401 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4402 | PerlIOPending_pushed, |
44798d05 | 4403 | PerlIOBuf_popped, |
14a5cf38 | 4404 | NULL, |
86e05cf2 | 4405 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4406 | NULL, |
4407 | PerlIOBase_fileno, | |
71200d45 | 4408 | PerlIOBuf_dup, |
14a5cf38 JH |
4409 | PerlIOPending_read, |
4410 | PerlIOBuf_unread, | |
4411 | PerlIOBuf_write, | |
4412 | PerlIOPending_seek, | |
4413 | PerlIOBuf_tell, | |
4414 | PerlIOPending_close, | |
4415 | PerlIOPending_flush, | |
4416 | PerlIOPending_fill, | |
4417 | PerlIOBase_eof, | |
4418 | PerlIOBase_error, | |
4419 | PerlIOBase_clearerr, | |
4420 | PerlIOBase_setlinebuf, | |
4421 | PerlIOBuf_get_base, | |
4422 | PerlIOBuf_bufsiz, | |
4423 | PerlIOBuf_get_ptr, | |
4424 | PerlIOBuf_get_cnt, | |
4425 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4426 | }; |
4427 | ||
4428 | ||
4429 | ||
4430 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4431 | /* |
4432 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4433 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4434 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4435 | * |
4436 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4437 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4438 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4439 | * that it ends at c->nl; these two cases can be distinguished by | |
4440 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4441 | * _unread() and _flush() calls. | |
4442 | * It only matters for read operations. | |
66ecd56b NIS |
4443 | */ |
4444 | ||
14a5cf38 | 4445 | typedef struct { |
22569500 NIS |
4446 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4447 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4448 | * buffer */ |
99efab12 NIS |
4449 | } PerlIOCrlf; |
4450 | ||
ff1e3883 JD |
4451 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4452 | * Otherwise the :crlf layer would always revert back to | |
4453 | * raw mode. | |
4454 | */ | |
4455 | static void | |
4456 | S_inherit_utf8_flag(PerlIO *f) | |
4457 | { | |
4458 | PerlIO *g = PerlIONext(f); | |
4459 | if (PerlIOValid(g)) { | |
4460 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4461 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4462 | } | |
4463 | } | |
4464 | } | |
4465 | ||
f5b9d040 | 4466 | IV |
2dc2558e | 4467 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4468 | { |
14a5cf38 JH |
4469 | IV code; |
4470 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4471 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4472 | #if 0 |
14a5cf38 | 4473 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4474 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4475 | PerlIOBase(f)->flags); |
5e2ab84b | 4476 | #endif |
8229d19f | 4477 | { |
5da08ab0 LT |
4478 | /* If the old top layer is a CRLF layer, reactivate it (if |
4479 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4480 | PerlIO *g = PerlIONext(f); |
7826b36f | 4481 | if (PerlIOValid(g)) { |
8229d19f JH |
4482 | PerlIOl *b = PerlIOBase(g); |
4483 | if (b && b->tab == &PerlIO_crlf) { | |
4484 | if (!(b->flags & PERLIO_F_CRLF)) | |
4485 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4486 | S_inherit_utf8_flag(g); |
8229d19f JH |
4487 | PerlIO_pop(aTHX_ f); |
4488 | return code; | |
7826b36f | 4489 | } |
8229d19f JH |
4490 | } |
4491 | } | |
ff1e3883 | 4492 | S_inherit_utf8_flag(f); |
14a5cf38 | 4493 | return code; |
f5b9d040 NIS |
4494 | } |
4495 | ||
4496 | ||
99efab12 | 4497 | SSize_t |
f62ce20a | 4498 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4499 | { |
dcda55fc | 4500 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4501 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4502 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4503 | c->nl = NULL; |
4504 | } | |
4505 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4506 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4507 | else { |
4508 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4509 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4510 | SSize_t unread = 0; | |
4511 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4512 | PerlIO_flush(f); | |
4513 | if (!b->buf) | |
4514 | PerlIO_get_base(f); | |
4515 | if (b->buf) { | |
4516 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4517 | b->end = b->ptr = b->buf + b->bufsiz; | |
4518 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4519 | b->posn -= b->bufsiz; | |
4520 | } | |
4521 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4522 | const int ch = *--buf; |
14a5cf38 JH |
4523 | if (ch == '\n') { |
4524 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4525 | *--(b->ptr) = NATIVE_0xa; |
4526 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4527 | unread++; |
4528 | count--; | |
4529 | } | |
4530 | else { | |
93c2c2ec | 4531 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4532 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4533 | '\r' */ | |
93c2c2ec IZ |
4534 | unread++; |
4535 | count--; | |
14a5cf38 JH |
4536 | } |
4537 | } | |
4538 | else { | |
4539 | *--(b->ptr) = ch; | |
4540 | unread++; | |
4541 | count--; | |
4542 | } | |
4543 | } | |
4544 | } | |
ec1da995 LT |
4545 | if (count > 0) |
4546 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4547 | return unread; |
4548 | } | |
99efab12 NIS |
4549 | } |
4550 | ||
93c2c2ec | 4551 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4552 | SSize_t |
f62ce20a | 4553 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4554 | { |
dcda55fc | 4555 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4556 | if (!b->buf) |
4557 | PerlIO_get_base(f); | |
4558 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4559 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4560 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4561 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4562 | scan: |
76e6dc3a | 4563 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4564 | nl++; |
76e6dc3a | 4565 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4566 | test: |
4567 | if (nl + 1 < b->end) { | |
76e6dc3a | 4568 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4569 | *nl = '\n'; |
4570 | c->nl = nl; | |
4571 | } | |
4572 | else { | |
4573 | /* | |
71200d45 | 4574 | * Not CR,LF but just CR |
14a5cf38 JH |
4575 | */ |
4576 | nl++; | |
4577 | goto scan; | |
4578 | } | |
4579 | } | |
4580 | else { | |
4581 | /* | |
71200d45 | 4582 | * Blast - found CR as last char in buffer |
14a5cf38 | 4583 | */ |
e87a358a | 4584 | |
14a5cf38 JH |
4585 | if (b->ptr < nl) { |
4586 | /* | |
4587 | * They may not care, defer work as long as | |
71200d45 | 4588 | * possible |
14a5cf38 | 4589 | */ |
a0d1d361 | 4590 | c->nl = nl; |
14a5cf38 JH |
4591 | return (nl - b->ptr); |
4592 | } | |
4593 | else { | |
4594 | int code; | |
22569500 | 4595 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4596 | * flush() is concerned */ |
22569500 | 4597 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4598 | /* Note as we have moved buf up flush's |
4599 | posn += ptr-buf | |
4600 | will naturally make posn point at CR | |
4601 | */ | |
22569500 NIS |
4602 | b->bufsiz--; /* Buffer is thus smaller */ |
4603 | code = PerlIO_fill(f); /* Fetch some more */ | |
4604 | b->bufsiz++; /* Restore size for next time */ | |
4605 | b->buf--; /* Point at space */ | |
4606 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4607 | * off */ |
76e6dc3a | 4608 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4609 | if (code == 0) |
22569500 | 4610 | goto test; /* fill() call worked */ |
14a5cf38 | 4611 | /* |
71200d45 | 4612 | * CR at EOF - just fall through |
14a5cf38 | 4613 | */ |
a0d1d361 | 4614 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4615 | } |
4616 | } | |
4617 | } | |
4618 | } | |
4619 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4620 | } | |
4621 | return 0; | |
99efab12 NIS |
4622 | } |
4623 | ||
4624 | void | |
f62ce20a | 4625 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4626 | { |
dcda55fc AL |
4627 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4628 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4629 | if (!b->buf) |
4630 | PerlIO_get_base(f); | |
4631 | if (!ptr) { | |
a0d1d361 | 4632 | if (c->nl) { |
14a5cf38 | 4633 | ptr = c->nl + 1; |
76e6dc3a | 4634 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4635 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4636 | ptr--; |
4637 | } | |
4638 | } | |
14a5cf38 JH |
4639 | else { |
4640 | ptr = b->end; | |
14a5cf38 JH |
4641 | } |
4642 | ptr -= cnt; | |
4643 | } | |
4644 | else { | |
6f207bd3 | 4645 | NOOP; |
3b4bd3fd | 4646 | #if 0 |
14a5cf38 | 4647 | /* |
71200d45 | 4648 | * Test code - delete when it works ... |
14a5cf38 | 4649 | */ |
3b4bd3fd | 4650 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4651 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4652 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4653 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4654 | chk--; |
22569500 | 4655 | } |
14a5cf38 JH |
4656 | chk -= cnt; |
4657 | ||
a0d1d361 | 4658 | if (ptr != chk ) { |
99ef548b | 4659 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4660 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4661 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4662 | } |
99ef548b | 4663 | #endif |
14a5cf38 JH |
4664 | } |
4665 | if (c->nl) { | |
4666 | if (ptr > c->nl) { | |
4667 | /* | |
71200d45 | 4668 | * They have taken what we lied about |
14a5cf38 | 4669 | */ |
76e6dc3a | 4670 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4671 | c->nl = NULL; |
4672 | ptr++; | |
4673 | } | |
4674 | } | |
4675 | b->ptr = ptr; | |
4676 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4677 | } |
4678 | ||
4679 | SSize_t | |
f62ce20a | 4680 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4681 | { |
14a5cf38 | 4682 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4683 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4684 | else { |
dcda55fc | 4685 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4686 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4687 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4688 | if (!b->buf) |
4689 | PerlIO_get_base(f); | |
4690 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4691 | return 0; | |
4692 | while (buf < ebuf) { | |
dcda55fc | 4693 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4694 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4695 | while (buf < ebuf && b->ptr < eptr) { | |
4696 | if (*buf == '\n') { | |
4697 | if ((b->ptr + 2) > eptr) { | |
4698 | /* | |
71200d45 | 4699 | * Not room for both |
14a5cf38 JH |
4700 | */ |
4701 | PerlIO_flush(f); | |
4702 | break; | |
4703 | } | |
4704 | else { | |
76e6dc3a KW |
4705 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4706 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4707 | buf++; |
4708 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4709 | PerlIO_flush(f); | |
4710 | break; | |
4711 | } | |
4712 | } | |
4713 | } | |
4714 | else { | |
dcda55fc | 4715 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4716 | } |
4717 | if (b->ptr >= eptr) { | |
4718 | PerlIO_flush(f); | |
4719 | break; | |
4720 | } | |
4721 | } | |
4722 | } | |
4723 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4724 | PerlIO_flush(f); | |
4725 | return (buf - (STDCHAR *) vbuf); | |
4726 | } | |
99efab12 NIS |
4727 | } |
4728 | ||
4729 | IV | |
f62ce20a | 4730 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4731 | { |
dcda55fc | 4732 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4733 | if (c->nl) { |
76e6dc3a | 4734 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4735 | c->nl = NULL; |
4736 | } | |
f62ce20a | 4737 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4738 | } |
4739 | ||
86e05cf2 NIS |
4740 | IV |
4741 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4742 | { | |
4743 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4744 | /* In text mode - flush any pending stuff and flip it */ | |
4745 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4746 | #ifndef PERLIO_USING_CRLF | |
4747 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4748 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4749 | #endif |
4750 | } | |
4751 | return 0; | |
4752 | } | |
4753 | ||
27da23d5 | 4754 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4755 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4756 | "crlf", |
4757 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4758 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4759 | PerlIOCrlf_pushed, |
44798d05 | 4760 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4761 | PerlIOBuf_open, |
86e05cf2 | 4762 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4763 | NULL, |
4764 | PerlIOBase_fileno, | |
71200d45 | 4765 | PerlIOBuf_dup, |
de009b76 | 4766 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4767 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4768 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4769 | PerlIOBuf_seek, |
4770 | PerlIOBuf_tell, | |
4771 | PerlIOBuf_close, | |
4772 | PerlIOCrlf_flush, | |
4773 | PerlIOBuf_fill, | |
4774 | PerlIOBase_eof, | |
4775 | PerlIOBase_error, | |
4776 | PerlIOBase_clearerr, | |
4777 | PerlIOBase_setlinebuf, | |
4778 | PerlIOBuf_get_base, | |
4779 | PerlIOBuf_bufsiz, | |
4780 | PerlIOBuf_get_ptr, | |
4781 | PerlIOCrlf_get_cnt, | |
4782 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4783 | }; |
4784 | ||
9e353e3b | 4785 | PerlIO * |
e87a358a | 4786 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4787 | { |
97aff369 | 4788 | dVAR; |
a1ea730d | 4789 | if (!PL_perlio) { |
14a5cf38 JH |
4790 | PerlIO_stdstreams(aTHX); |
4791 | } | |
303f2dc3 | 4792 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4793 | } |
4794 | ||
9e353e3b | 4795 | PerlIO * |
e87a358a | 4796 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4797 | { |
97aff369 | 4798 | dVAR; |
a1ea730d | 4799 | if (!PL_perlio) { |
14a5cf38 JH |
4800 | PerlIO_stdstreams(aTHX); |
4801 | } | |
303f2dc3 | 4802 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4803 | } |
4804 | ||
9e353e3b | 4805 | PerlIO * |
e87a358a | 4806 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4807 | { |
97aff369 | 4808 | dVAR; |
a1ea730d | 4809 | if (!PL_perlio) { |
14a5cf38 JH |
4810 | PerlIO_stdstreams(aTHX); |
4811 | } | |
303f2dc3 | 4812 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4813 | } |
4814 | ||
4815 | /*--------------------------------------------------------------------------------------*/ | |
4816 | ||
9e353e3b NIS |
4817 | char * |
4818 | PerlIO_getname(PerlIO *f, char *buf) | |
4819 | { | |
a15cef0c | 4820 | #ifdef VMS |
dbf7dff6 | 4821 | dTHX; |
73d840c0 | 4822 | char *name = NULL; |
7659f319 | 4823 | bool exported = FALSE; |
14a5cf38 | 4824 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4825 | if (!stdio) { |
4826 | stdio = PerlIO_exportFILE(f,0); | |
4827 | exported = TRUE; | |
4828 | } | |
4829 | if (stdio) { | |
14a5cf38 | 4830 | name = fgetname(stdio, buf); |
7659f319 CB |
4831 | if (exported) PerlIO_releaseFILE(f,stdio); |
4832 | } | |
73d840c0 | 4833 | return name; |
a15cef0c | 4834 | #else |
8772537c AL |
4835 | PERL_UNUSED_ARG(f); |
4836 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4837 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4838 | return NULL; |
a15cef0c | 4839 | #endif |
9e353e3b NIS |
4840 | } |
4841 | ||
4842 | ||
4843 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4844 | /* |
4845 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4846 | * terms of above |
14a5cf38 | 4847 | */ |
9e353e3b | 4848 | |
e87a358a NIS |
4849 | #undef PerlIO_fdopen |
4850 | PerlIO * | |
4851 | PerlIO_fdopen(int fd, const char *mode) | |
4852 | { | |
4853 | dTHX; | |
bd61b366 | 4854 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4855 | } |
4856 | ||
4857 | #undef PerlIO_open | |
4858 | PerlIO * | |
4859 | PerlIO_open(const char *path, const char *mode) | |
4860 | { | |
4861 | dTHX; | |
42d9b98d | 4862 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4863 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4864 | } |
4865 | ||
4866 | #undef Perlio_reopen | |
4867 | PerlIO * | |
4868 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4869 | { | |
4870 | dTHX; | |
42d9b98d | 4871 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4872 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4873 | } |
4874 | ||
9e353e3b | 4875 | #undef PerlIO_getc |
6f9d8c32 | 4876 | int |
9e353e3b | 4877 | PerlIO_getc(PerlIO *f) |
760ac839 | 4878 | { |
e87a358a | 4879 | dTHX; |
14a5cf38 | 4880 | STDCHAR buf[1]; |
de009b76 | 4881 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4882 | return (unsigned char) buf[0]; |
4883 | } | |
4884 | return EOF; | |
313ca112 NIS |
4885 | } |
4886 | ||
4887 | #undef PerlIO_ungetc | |
4888 | int | |
4889 | PerlIO_ungetc(PerlIO *f, int ch) | |
4890 | { | |
e87a358a | 4891 | dTHX; |
14a5cf38 JH |
4892 | if (ch != EOF) { |
4893 | STDCHAR buf = ch; | |
4894 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4895 | return ch; | |
4896 | } | |
4897 | return EOF; | |
760ac839 LW |
4898 | } |
4899 | ||
9e353e3b NIS |
4900 | #undef PerlIO_putc |
4901 | int | |
4902 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4903 | { |
e87a358a | 4904 | dTHX; |
14a5cf38 JH |
4905 | STDCHAR buf = ch; |
4906 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4907 | } |
4908 | ||
9e353e3b | 4909 | #undef PerlIO_puts |
760ac839 | 4910 | int |
9e353e3b | 4911 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4912 | { |
e87a358a | 4913 | dTHX; |
dcda55fc | 4914 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4915 | } |
4916 | ||
4917 | #undef PerlIO_rewind | |
4918 | void | |
c78749f2 | 4919 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4920 | { |
e87a358a | 4921 | dTHX; |
14a5cf38 JH |
4922 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4923 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4924 | } |
4925 | ||
4926 | #undef PerlIO_vprintf | |
4927 | int | |
4928 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4929 | { | |
14a5cf38 | 4930 | dTHX; |
53ce71d3 | 4931 | SV * sv; |
b83604b4 | 4932 | const char *s; |
14a5cf38 JH |
4933 | STRLEN len; |
4934 | SSize_t wrote; | |
2cc61e15 | 4935 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4936 | va_list apc; |
4937 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4938 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 4939 | va_end(apc); |
2cc61e15 | 4940 | #else |
53ce71d3 | 4941 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4942 | #endif |
b83604b4 | 4943 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4944 | wrote = PerlIO_write(f, s, len); |
4945 | SvREFCNT_dec(sv); | |
4946 | return wrote; | |
760ac839 LW |
4947 | } |
4948 | ||
4949 | #undef PerlIO_printf | |
6f9d8c32 | 4950 | int |
14a5cf38 | 4951 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4952 | { |
14a5cf38 JH |
4953 | va_list ap; |
4954 | int result; | |
4955 | va_start(ap, fmt); | |
4956 | result = PerlIO_vprintf(f, fmt, ap); | |
4957 | va_end(ap); | |
4958 | return result; | |
760ac839 LW |
4959 | } |
4960 | ||
4961 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4962 | int |
14a5cf38 | 4963 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4964 | { |
e87a358a | 4965 | dTHX; |
14a5cf38 JH |
4966 | va_list ap; |
4967 | int result; | |
4968 | va_start(ap, fmt); | |
4969 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
4970 | va_end(ap); | |
4971 | return result; | |
760ac839 LW |
4972 | } |
4973 | ||
4974 | #undef PerlIO_tmpfile | |
4975 | PerlIO * | |
c78749f2 | 4976 | PerlIO_tmpfile(void) |
760ac839 | 4977 | { |
dbf7dff6 | 4978 | #ifndef WIN32 |
2941a2e1 | 4979 | dTHX; |
dbf7dff6 | 4980 | #endif |
2941a2e1 | 4981 | PerlIO *f = NULL; |
2941a2e1 | 4982 | #ifdef WIN32 |
de009b76 | 4983 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
4984 | if (fd >= 0) |
4985 | f = PerlIO_fdopen(fd, "w+b"); | |
4986 | #else /* WIN32 */ | |
460c8493 | 4987 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
4988 | int fd = -1; |
4989 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 4990 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 4991 | SV * sv = NULL; |
60f7fc1e | 4992 | int old_umask = umask(0600); |
2941a2e1 JH |
4993 | /* |
4994 | * I have no idea how portable mkstemp() is ... NI-S | |
4995 | */ | |
7299ca58 | 4996 | if (tmpdir && *tmpdir) { |
0b99e986 | 4997 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 4998 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
4999 | sv_catpv(sv, tempname + 4); |
5000 | fd = mkstemp(SvPVX(sv)); | |
5001 | } | |
5002 | if (fd < 0) { | |
e40f8e80 | 5003 | SvREFCNT_dec(sv); |
7299ca58 | 5004 | sv = NULL; |
0b99e986 RGS |
5005 | /* else we try /tmp */ |
5006 | fd = mkstemp(tempname); | |
5007 | } | |
b7561fc9 BF |
5008 | if (fd < 0) { |
5009 | /* Try cwd */ | |
5010 | sv = newSVpvs("."); | |
5011 | sv_catpv(sv, tempname + 4); | |
5012 | fd = mkstemp(SvPVX(sv)); | |
5013 | } | |
60f7fc1e | 5014 | umask(old_umask); |
2941a2e1 JH |
5015 | if (fd >= 0) { |
5016 | f = PerlIO_fdopen(fd, "w+"); | |
5017 | if (f) | |
5018 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5019 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5020 | } |
ef8d46e8 | 5021 | SvREFCNT_dec(sv); |
2941a2e1 | 5022 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5023 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5024 | |
085e731f CB |
5025 | if (stdio) |
5026 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5027 | ||
2941a2e1 JH |
5028 | # endif /* else HAS_MKSTEMP */ |
5029 | #endif /* else WIN32 */ | |
5030 | return f; | |
760ac839 LW |
5031 | } |
5032 | ||
6f9d8c32 NIS |
5033 | #undef HAS_FSETPOS |
5034 | #undef HAS_FGETPOS | |
5035 | ||
22569500 | 5036 | #endif /* PERLIO_IS_STDIO */ |
760ac839 | 5037 | |
9e353e3b | 5038 | /*======================================================================================*/ |
14a5cf38 | 5039 | /* |
71200d45 NIS |
5040 | * Now some functions in terms of above which may be needed even if we are |
5041 | * not in true PerlIO mode | |
9e353e3b | 5042 | */ |
188f0c84 YO |
5043 | const char * |
5044 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5045 | { | |
5046 | dVAR; | |
8b850bd5 NC |
5047 | const char *direction = NULL; |
5048 | SV *layers; | |
188f0c84 YO |
5049 | /* |
5050 | * Need to supply default layer info from open.pm | |
5051 | */ | |
8b850bd5 NC |
5052 | |
5053 | if (!PL_curcop) | |
5054 | return NULL; | |
5055 | ||
5056 | if (mode && mode[0] != 'r') { | |
5057 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5058 | direction = "open>"; | |
5059 | } else { | |
5060 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5061 | direction = "open<"; | |
188f0c84 | 5062 | } |
8b850bd5 NC |
5063 | if (!direction) |
5064 | return NULL; | |
5065 | ||
20439bc7 | 5066 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5067 | |
5068 | assert(layers); | |
5069 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5070 | } |
5071 | ||
9e353e3b | 5072 | |
760ac839 LW |
5073 | #ifndef HAS_FSETPOS |
5074 | #undef PerlIO_setpos | |
5075 | int | |
766a733e | 5076 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5077 | { |
14a5cf38 JH |
5078 | if (SvOK(pos)) { |
5079 | STRLEN len; | |
2bcd6579 | 5080 | dTHX; |
c4420975 | 5081 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5082 | if (f && len == sizeof(Off_t)) |
5083 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5084 | } | |
93189314 | 5085 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5086 | return -1; |
760ac839 | 5087 | } |
c411622e | 5088 | #else |
c411622e | 5089 | #undef PerlIO_setpos |
5090 | int | |
766a733e | 5091 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5092 | { |
14a5cf38 JH |
5093 | dTHX; |
5094 | if (SvOK(pos)) { | |
5095 | STRLEN len; | |
c4420975 | 5096 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5097 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5098 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5099 | return fsetpos64(f, fpos); |
d9b3e12d | 5100 | #else |
14a5cf38 | 5101 | return fsetpos(f, fpos); |
d9b3e12d | 5102 | #endif |
14a5cf38 | 5103 | } |
766a733e | 5104 | } |
93189314 | 5105 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5106 | return -1; |
c411622e | 5107 | } |
5108 | #endif | |
760ac839 LW |
5109 | |
5110 | #ifndef HAS_FGETPOS | |
5111 | #undef PerlIO_getpos | |
5112 | int | |
766a733e | 5113 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5114 | { |
14a5cf38 JH |
5115 | dTHX; |
5116 | Off_t posn = PerlIO_tell(f); | |
5117 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5118 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5119 | } |
c411622e | 5120 | #else |
c411622e | 5121 | #undef PerlIO_getpos |
5122 | int | |
766a733e | 5123 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5124 | { |
14a5cf38 JH |
5125 | dTHX; |
5126 | Fpos_t fpos; | |
5127 | int code; | |
2d4389e4 | 5128 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5129 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5130 | #else |
14a5cf38 | 5131 | code = fgetpos(f, &fpos); |
d9b3e12d | 5132 | #endif |
14a5cf38 JH |
5133 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5134 | return code; | |
c411622e | 5135 | } |
5136 | #endif | |
760ac839 | 5137 | |
97cb92d6 | 5138 | #if !defined(HAS_VPRINTF) |
760ac839 LW |
5139 | |
5140 | int | |
c78749f2 | 5141 | vprintf(char *pat, char *args) |
662a7e3f CS |
5142 | { |
5143 | _doprnt(pat, args, stdout); | |
22569500 | 5144 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5145 | * value */ |
662a7e3f CS |
5146 | } |
5147 | ||
5148 | int | |
c78749f2 | 5149 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5150 | { |
5151 | _doprnt(pat, args, fd); | |
22569500 | 5152 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5153 | * value */ |
760ac839 LW |
5154 | } |
5155 | ||
5156 | #endif | |
5157 | ||
9cfa90c0 NC |
5158 | /* |
5159 | * Local variables: | |
5160 | * c-indentation-style: bsd | |
5161 | * c-basic-offset: 4 | |
14d04a33 | 5162 | * indent-tabs-mode: nil |
9cfa90c0 NC |
5163 | * End: |
5164 | * | |
14d04a33 | 5165 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5166 | */ |