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 | } | |
38d96942 | 202 | #ifdef PERLIO_BINARY_AND_TEXT_DIFFERENT_AND_EFFECTIVE |
06c7082d NIS |
203 | if (rawmode & O_BINARY) |
204 | mode[ix++] = 'b'; | |
38d96942 | 205 | #endif |
06c7082d NIS |
206 | mode[ix] = '\0'; |
207 | return ptype; | |
208 | } | |
209 | ||
eb73beca NIS |
210 | #ifndef PERLIO_LAYERS |
211 | int | |
212 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
213 | { | |
6874a2de NIS |
214 | if (!names || !*names |
215 | || strEQ(names, ":crlf") | |
216 | || strEQ(names, ":raw") | |
217 | || strEQ(names, ":bytes") | |
218 | ) { | |
14a5cf38 JH |
219 | return 0; |
220 | } | |
221 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
222 | /* | |
71200d45 | 223 | * NOTREACHED |
14a5cf38 JH |
224 | */ |
225 | return -1; | |
eb73beca NIS |
226 | } |
227 | ||
13621cfb NIS |
228 | void |
229 | PerlIO_destruct(pTHX) | |
230 | { | |
231 | } | |
232 | ||
f5b9d040 NIS |
233 | int |
234 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
235 | { | |
14a5cf38 | 236 | return perlsio_binmode(fp, iotype, mode); |
f5b9d040 | 237 | } |
60382766 | 238 | |
e0fa5af2 | 239 | PerlIO * |
ecdeb87c | 240 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 241 | { |
a0fd4948 | 242 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
243 | return NULL; |
244 | #else | |
245 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 246 | return PerlSIO_fdupopen(f); |
0553478e | 247 | #else |
30753f56 NIS |
248 | #ifdef WIN32 |
249 | return win32_fdupopen(f); | |
250 | #else | |
e0fa5af2 | 251 | if (f) { |
504618e9 | 252 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 253 | if (fd >= 0) { |
06c7082d | 254 | char mode[8]; |
a5936e02 | 255 | #ifdef DJGPP |
dcda55fc AL |
256 | const int omode = djgpp_get_stream_mode(f); |
257 | #else | |
258 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 259 | #endif |
06c7082d | 260 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 261 | /* the r+ is a hack */ |
06c7082d | 262 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
263 | } |
264 | return NULL; | |
265 | } | |
266 | else { | |
93189314 | 267 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 268 | } |
7114a2d2 | 269 | #endif |
e0fa5af2 | 270 | return NULL; |
0553478e | 271 | #endif |
30753f56 | 272 | #endif |
e0fa5af2 NIS |
273 | } |
274 | ||
275 | ||
14a5cf38 | 276 | /* |
71200d45 | 277 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 278 | */ |
ee518936 NIS |
279 | |
280 | PerlIO * | |
14a5cf38 JH |
281 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
282 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
283 | { | |
7cf31beb NIS |
284 | if (narg) { |
285 | if (narg > 1) { | |
3b8752bb | 286 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 287 | } |
14a5cf38 JH |
288 | if (*args == &PL_sv_undef) |
289 | return PerlIO_tmpfile(); | |
290 | else { | |
41188aa0 | 291 | STRLEN len; |
74622586 | 292 | const char *name = SvPV_const(*args, len); |
41188aa0 | 293 | if (!IS_SAFE_PATHNAME(name, len, "open")) |
c8028aa6 TC |
294 | return NULL; |
295 | ||
3b6c1aba | 296 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
297 | fd = PerlLIO_open3(name, imode, perm); |
298 | if (fd >= 0) | |
de009b76 | 299 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
300 | } |
301 | else if (old) { | |
302 | return PerlIO_reopen(name, mode, old); | |
303 | } | |
304 | else { | |
305 | return PerlIO_open(name, mode); | |
306 | } | |
307 | } | |
308 | } | |
309 | else { | |
310 | return PerlIO_fdopen(fd, (char *) mode); | |
311 | } | |
312 | return NULL; | |
ee518936 NIS |
313 | } |
314 | ||
15eb3045 | 315 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
0c4f7ff0 NIS |
316 | XS(XS_PerlIO__Layer__find) |
317 | { | |
14a5cf38 JH |
318 | dXSARGS; |
319 | if (items < 2) | |
320 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
321 | else { | |
dcda55fc | 322 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
323 | ST(0) = (strEQ(name, "crlf") |
324 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
325 | XSRETURN(1); | |
326 | } | |
0c4f7ff0 NIS |
327 | } |
328 | ||
329 | ||
330 | void | |
331 | Perl_boot_core_PerlIO(pTHX) | |
332 | { | |
14a5cf38 | 333 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
334 | } |
335 | ||
ac27b0f5 NIS |
336 | #endif |
337 | ||
32e30700 | 338 | |
6f9d8c32 | 339 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
340 | |
341 | void | |
e8632036 | 342 | PerlIO_init(pTHX) |
760ac839 | 343 | { |
96a5add6 | 344 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
345 | /* |
346 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 347 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 348 | * that may be required by loadable extensions e.g. for |
71200d45 | 349 | * FileHandle::tmpfile |
14a5cf38 | 350 | */ |
760ac839 LW |
351 | } |
352 | ||
33dcbb9a | 353 | #undef PerlIO_tmpfile |
354 | PerlIO * | |
8ac85365 | 355 | PerlIO_tmpfile(void) |
33dcbb9a | 356 | { |
14a5cf38 | 357 | return tmpfile(); |
33dcbb9a | 358 | } |
359 | ||
22569500 | 360 | #else /* PERLIO_IS_STDIO */ |
760ac839 | 361 | |
6f9d8c32 | 362 | /*======================================================================================*/ |
14a5cf38 | 363 | /* |
71200d45 | 364 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 365 | */ |
760ac839 | 366 | |
76ced9ad NIS |
367 | #include "perliol.h" |
368 | ||
6f9d8c32 | 369 | void |
14a5cf38 JH |
370 | PerlIO_debug(const char *fmt, ...) |
371 | { | |
14a5cf38 JH |
372 | va_list ap; |
373 | dSYS; | |
374 | va_start(ap, fmt); | |
582588d2 | 375 | if (!PL_perlio_debug_fd) { |
284167a5 | 376 | if (!TAINTING_get && |
985213f2 AB |
377 | PerlProc_getuid() == PerlProc_geteuid() && |
378 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
379 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
380 | if (s && *s) | |
381 | PL_perlio_debug_fd | |
382 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
383 | else | |
384 | PL_perlio_debug_fd = -1; | |
385 | } else { | |
386 | /* tainting or set*id, so ignore the environment, and ensure we | |
387 | skip these tests next time through. */ | |
27da23d5 | 388 | PL_perlio_debug_fd = -1; |
582588d2 | 389 | } |
14a5cf38 | 390 | } |
27da23d5 | 391 | if (PL_perlio_debug_fd > 0) { |
70ace5da | 392 | #ifdef USE_ITHREADS |
dcda55fc | 393 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
394 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
395 | char buffer[1024]; | |
1208b3dd JH |
396 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
397 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
b469f1e0 | 398 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2)); |
70ace5da | 399 | #else |
dcda55fc AL |
400 | const char *s = CopFILE(PL_curcop); |
401 | STRLEN len; | |
550e2ce0 NC |
402 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
403 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
404 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
405 | ||
b83604b4 | 406 | s = SvPV_const(sv, len); |
b469f1e0 | 407 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len)); |
14a5cf38 | 408 | SvREFCNT_dec(sv); |
70ace5da | 409 | #endif |
14a5cf38 JH |
410 | } |
411 | va_end(ap); | |
6f9d8c32 NIS |
412 | } |
413 | ||
9e353e3b NIS |
414 | /*--------------------------------------------------------------------------------------*/ |
415 | ||
14a5cf38 | 416 | /* |
71200d45 | 417 | * Inner level routines |
14a5cf38 | 418 | */ |
9e353e3b | 419 | |
16865ff7 DM |
420 | /* check that the head field of each layer points back to the head */ |
421 | ||
422 | #ifdef DEBUGGING | |
423 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
424 | static void | |
425 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
426 | { | |
427 | PerlIOl *head, *p; | |
428 | int seen = 0; | |
429 | if (!PerlIOValid(f)) | |
430 | return; | |
431 | p = head = PerlIOBase(f)->head; | |
432 | assert(p); | |
433 | do { | |
434 | assert(p->head == head); | |
435 | if (p == (PerlIOl*)f) | |
436 | seen = 1; | |
437 | p = p->next; | |
438 | } while (p); | |
439 | assert(seen); | |
440 | } | |
441 | #else | |
442 | # define VERIFY_HEAD(f) | |
443 | #endif | |
444 | ||
445 | ||
14a5cf38 | 446 | /* |
71200d45 | 447 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 448 | */ |
05d1247b | 449 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 450 | |
8995e67d DM |
451 | static void |
452 | PerlIO_init_table(pTHX) | |
453 | { | |
454 | if (PL_perlio) | |
455 | return; | |
456 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
457 | } | |
458 | ||
459 | ||
460 | ||
760ac839 | 461 | PerlIO * |
5f1a76d0 | 462 | PerlIO_allocate(pTHX) |
6f9d8c32 | 463 | { |
97aff369 | 464 | dVAR; |
14a5cf38 | 465 | /* |
71200d45 | 466 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 467 | */ |
303f2dc3 DM |
468 | PerlIOl **last; |
469 | PerlIOl *f; | |
a1ea730d | 470 | last = &PL_perlio; |
14a5cf38 JH |
471 | while ((f = *last)) { |
472 | int i; | |
303f2dc3 | 473 | last = (PerlIOl **) (f); |
14a5cf38 | 474 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 475 | if (!((++f)->next)) { |
abf9167d | 476 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 477 | f->tab = NULL; |
16865ff7 | 478 | f->head = f; |
303f2dc3 | 479 | return (PerlIO *)f; |
14a5cf38 JH |
480 | } |
481 | } | |
482 | } | |
303f2dc3 | 483 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
484 | if (!f) { |
485 | return NULL; | |
486 | } | |
303f2dc3 | 487 | *last = (PerlIOl*) f++; |
abf9167d | 488 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 489 | f->tab = NULL; |
16865ff7 | 490 | f->head = f; |
303f2dc3 | 491 | return (PerlIO*) f; |
05d1247b NIS |
492 | } |
493 | ||
a1ea730d NIS |
494 | #undef PerlIO_fdupopen |
495 | PerlIO * | |
ecdeb87c | 496 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 497 | { |
04892f78 | 498 | if (PerlIOValid(f)) { |
de009b76 | 499 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 500 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
501 | if (tab && tab->Dup) |
502 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
503 | else { |
504 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
505 | } | |
a1ea730d | 506 | } |
210e727c JH |
507 | else |
508 | SETERRNO(EBADF, SS_IVCHAN); | |
509 | ||
510 | return NULL; | |
a1ea730d NIS |
511 | } |
512 | ||
513 | void | |
303f2dc3 | 514 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 515 | { |
303f2dc3 | 516 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
517 | if (table) { |
518 | int i; | |
303f2dc3 | 519 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 520 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
521 | PerlIOl * const f = table + i; |
522 | if (f->next) { | |
523 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
524 | } |
525 | } | |
3a1ee7e8 | 526 | Safefree(table); |
14a5cf38 | 527 | *tablep = NULL; |
05d1247b | 528 | } |
05d1247b NIS |
529 | } |
530 | ||
fcf2db38 NIS |
531 | |
532 | PerlIO_list_t * | |
3a1ee7e8 | 533 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 534 | { |
14a5cf38 | 535 | PerlIO_list_t *list; |
96a5add6 | 536 | PERL_UNUSED_CONTEXT; |
a02a5408 | 537 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
538 | list->refcnt = 1; |
539 | return list; | |
fcf2db38 NIS |
540 | } |
541 | ||
542 | void | |
3a1ee7e8 | 543 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 544 | { |
14a5cf38 JH |
545 | if (list) { |
546 | if (--list->refcnt == 0) { | |
547 | if (list->array) { | |
14a5cf38 | 548 | IV i; |
ef8d46e8 VP |
549 | for (i = 0; i < list->cur; i++) |
550 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
551 | Safefree(list->array); |
552 | } | |
553 | Safefree(list); | |
554 | } | |
555 | } | |
fcf2db38 NIS |
556 | } |
557 | ||
558 | void | |
3a1ee7e8 | 559 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 560 | { |
97aff369 | 561 | dVAR; |
334e202e | 562 | PerlIO_pair_t *p; |
b37c2d43 AL |
563 | PERL_UNUSED_CONTEXT; |
564 | ||
14a5cf38 JH |
565 | if (list->cur >= list->len) { |
566 | list->len += 8; | |
567 | if (list->array) | |
568 | Renew(list->array, list->len, PerlIO_pair_t); | |
569 | else | |
a02a5408 | 570 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
571 | } |
572 | p = &(list->array[list->cur++]); | |
573 | p->funcs = funcs; | |
574 | if ((p->arg = arg)) { | |
f84c484e | 575 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 576 | } |
fcf2db38 NIS |
577 | } |
578 | ||
3a1ee7e8 NIS |
579 | PerlIO_list_t * |
580 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
581 | { | |
b37c2d43 | 582 | PerlIO_list_t *list = NULL; |
694c95cf JH |
583 | if (proto) { |
584 | int i; | |
585 | list = PerlIO_list_alloc(aTHX); | |
586 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 587 | SV *arg = proto->array[i].arg; |
24d147a6 | 588 | #ifdef USE_ITHREADS |
a951d81d BL |
589 | if (arg && param) |
590 | arg = sv_dup(arg, param); | |
591 | #else | |
592 | PERL_UNUSED_ARG(param); | |
593 | #endif | |
694c95cf JH |
594 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
595 | } | |
3a1ee7e8 NIS |
596 | } |
597 | return list; | |
598 | } | |
4a4a6116 | 599 | |
05d1247b | 600 | void |
3a1ee7e8 | 601 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 602 | { |
3aaf42a7 | 603 | #ifdef USE_ITHREADS |
303f2dc3 DM |
604 | PerlIOl **table = &proto->Iperlio; |
605 | PerlIOl *f; | |
3a1ee7e8 NIS |
606 | PL_perlio = NULL; |
607 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
608 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 609 | PerlIO_init_table(aTHX); |
a25429c6 | 610 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
611 | while ((f = *table)) { |
612 | int i; | |
303f2dc3 | 613 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 614 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
615 | if (f->next) { |
616 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
617 | } |
618 | f++; | |
619 | } | |
620 | } | |
1b6737cc | 621 | #else |
a25429c6 | 622 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
623 | PERL_UNUSED_ARG(proto); |
624 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 625 | #endif |
9a6404c5 DM |
626 | } |
627 | ||
628 | void | |
13621cfb NIS |
629 | PerlIO_destruct(pTHX) |
630 | { | |
97aff369 | 631 | dVAR; |
303f2dc3 DM |
632 | PerlIOl **table = &PL_perlio; |
633 | PerlIOl *f; | |
694c95cf | 634 | #ifdef USE_ITHREADS |
a25429c6 | 635 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 636 | #endif |
14a5cf38 JH |
637 | while ((f = *table)) { |
638 | int i; | |
303f2dc3 | 639 | table = (PerlIOl **) (f++); |
14a5cf38 | 640 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 641 | PerlIO *x = &(f->next); |
dcda55fc | 642 | const PerlIOl *l; |
14a5cf38 | 643 | while ((l = *x)) { |
cc6623a8 | 644 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
645 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
646 | PerlIO_flush(x); | |
647 | PerlIO_pop(aTHX_ x); | |
648 | } | |
649 | else { | |
650 | x = PerlIONext(x); | |
651 | } | |
652 | } | |
653 | f++; | |
654 | } | |
655 | } | |
13621cfb NIS |
656 | } |
657 | ||
658 | void | |
a999f61b | 659 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 660 | { |
dcda55fc | 661 | const PerlIOl *l = *f; |
16865ff7 | 662 | VERIFY_HEAD(f); |
14a5cf38 | 663 | if (l) { |
cc6623a8 DM |
664 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
665 | l->tab ? l->tab->name : "(Null)"); | |
666 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
667 | /* |
668 | * If popped returns non-zero do not free its layer structure | |
669 | * it has either done so itself, or it is shared and still in | |
71200d45 | 670 | * use |
14a5cf38 | 671 | */ |
f62ce20a | 672 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
673 | return; |
674 | } | |
abf9167d DM |
675 | if (PerlIO_lockcnt(f)) { |
676 | /* we're in use; defer freeing the structure */ | |
677 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
678 | PerlIOBase(f)->tab = NULL; | |
679 | } | |
680 | else { | |
681 | *f = l->next; | |
682 | Safefree(l); | |
683 | } | |
684 | ||
a8c08ecd | 685 | } |
6f9d8c32 NIS |
686 | } |
687 | ||
39f7a870 JH |
688 | /* Return as an array the stack of layers on a filehandle. Note that |
689 | * the stack is returned top-first in the array, and there are three | |
690 | * times as many array elements as there are layers in the stack: the | |
691 | * first element of a layer triplet is the name, the second one is the | |
692 | * arguments, and the third one is the flags. */ | |
693 | ||
694 | AV * | |
695 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
696 | { | |
97aff369 | 697 | dVAR; |
dcda55fc | 698 | AV * const av = newAV(); |
39f7a870 | 699 | |
dcda55fc AL |
700 | if (PerlIOValid(f)) { |
701 | PerlIOl *l = PerlIOBase(f); | |
702 | ||
703 | while (l) { | |
92e45a3e NC |
704 | /* There is some collusion in the implementation of |
705 | XS_PerlIO_get_layers - it knows that name and flags are | |
706 | generated as fresh SVs here, and takes advantage of that to | |
707 | "copy" them by taking a reference. If it changes here, it needs | |
708 | to change there too. */ | |
dcda55fc AL |
709 | SV * const name = l->tab && l->tab->name ? |
710 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
711 | SV * const arg = l->tab && l->tab->Getarg ? | |
712 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
713 | av_push(av, name); | |
714 | av_push(av, arg); | |
715 | av_push(av, newSViv((IV)l->flags)); | |
716 | l = l->next; | |
717 | } | |
718 | } | |
39f7a870 | 719 | |
dcda55fc | 720 | return av; |
39f7a870 JH |
721 | } |
722 | ||
9e353e3b | 723 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 724 | /* |
71200d45 | 725 | * XS Interface for perl code |
14a5cf38 | 726 | */ |
9e353e3b | 727 | |
fcf2db38 | 728 | PerlIO_funcs * |
2edd7e44 | 729 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 730 | { |
27da23d5 | 731 | dVAR; |
14a5cf38 JH |
732 | IV i; |
733 | if ((SSize_t) len <= 0) | |
734 | len = strlen(name); | |
3a1ee7e8 | 735 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 736 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
737 | const STRLEN this_len = strlen(f->name); |
738 | if (this_len == len && memEQ(f->name, name, len)) { | |
fe5a182c | 739 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
740 | return f; |
741 | } | |
742 | } | |
3a1ee7e8 NIS |
743 | if (load && PL_subname && PL_def_layerlist |
744 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
745 | if (PL_in_load_module) { |
746 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
747 | return NULL; | |
748 | } else { | |
396482e1 | 749 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 750 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 751 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 752 | ENTER; |
4fa7c2bf | 753 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 754 | if (cv) { |
9cfa90c0 | 755 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 756 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 757 | } |
4fa7c2bf | 758 | PL_in_load_module = TRUE; |
d7a09b41 SR |
759 | /* |
760 | * The two SVs are magically freed by load_module | |
761 | */ | |
a0714e2c | 762 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
763 | LEAVE; |
764 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
765 | } | |
14a5cf38 JH |
766 | } |
767 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
768 | return NULL; | |
f3862f8b NIS |
769 | } |
770 | ||
2a1bc955 | 771 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
772 | |
773 | static int | |
774 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
775 | { | |
14a5cf38 | 776 | if (SvROK(sv)) { |
159b6efe | 777 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
778 | PerlIO * const ifp = IoIFP(io); |
779 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
780 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
781 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
782 | } |
783 | return 0; | |
b13b2135 NIS |
784 | } |
785 | ||
786 | static int | |
787 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
788 | { | |
14a5cf38 | 789 | if (SvROK(sv)) { |
159b6efe | 790 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
791 | PerlIO * const ifp = IoIFP(io); |
792 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
793 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
794 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
795 | } |
796 | return 0; | |
b13b2135 NIS |
797 | } |
798 | ||
799 | static int | |
800 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
801 | { | |
be2597df | 802 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 803 | return 0; |
b13b2135 NIS |
804 | } |
805 | ||
806 | static int | |
807 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
808 | { | |
be2597df | 809 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 810 | return 0; |
b13b2135 NIS |
811 | } |
812 | ||
813 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
814 | perlio_mg_get, |
815 | perlio_mg_set, | |
22569500 | 816 | NULL, /* len */ |
14a5cf38 JH |
817 | perlio_mg_clear, |
818 | perlio_mg_free | |
b13b2135 NIS |
819 | }; |
820 | ||
15eb3045 | 821 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
822 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
823 | { | |
14a5cf38 | 824 | dXSARGS; |
dcda55fc AL |
825 | SV * const sv = SvRV(ST(1)); |
826 | AV * const av = newAV(); | |
14a5cf38 JH |
827 | MAGIC *mg; |
828 | int count = 0; | |
829 | int i; | |
ad64d0ec | 830 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
831 | SvRMAGICAL_off(sv); |
832 | mg = mg_find(sv, PERL_MAGIC_ext); | |
833 | mg->mg_virtual = &perlio_vtab; | |
834 | mg_magical(sv); | |
be2597df | 835 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
836 | for (i = 2; i < items; i++) { |
837 | STRLEN len; | |
dcda55fc AL |
838 | const char * const name = SvPV_const(ST(i), len); |
839 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 840 | if (layer) { |
b37c2d43 | 841 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
842 | } |
843 | else { | |
844 | ST(count) = ST(i); | |
845 | count++; | |
846 | } | |
847 | } | |
848 | SvREFCNT_dec(av); | |
849 | XSRETURN(count); | |
850 | } | |
851 | ||
22569500 | 852 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 853 | |
e3f3bf95 NIS |
854 | SV * |
855 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 856 | { |
da51bb9b | 857 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 858 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 859 | return sv; |
e3f3bf95 NIS |
860 | } |
861 | ||
15eb3045 | 862 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 863 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 864 | { |
486ec47a | 865 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
866 | during loading of layers. |
867 | */ | |
97aff369 | 868 | dVAR; |
c9bca74a | 869 | dXSARGS; |
58c0efa5 | 870 | PERL_UNUSED_ARG(cv); |
c9bca74a | 871 | if (items) |
e62f0680 | 872 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
873 | XSRETURN(0); |
874 | } | |
875 | ||
15eb3045 | 876 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 877 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 878 | { |
97aff369 | 879 | dVAR; |
14a5cf38 | 880 | dXSARGS; |
58c0efa5 | 881 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
882 | if (items < 2) |
883 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
884 | else { | |
de009b76 | 885 | STRLEN len; |
46c461b5 | 886 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 887 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 888 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
889 | ST(0) = |
890 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
891 | &PL_sv_undef; | |
892 | XSRETURN(1); | |
893 | } | |
0c4f7ff0 NIS |
894 | } |
895 | ||
e3f3bf95 NIS |
896 | void |
897 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
898 | { | |
97aff369 | 899 | dVAR; |
3a1ee7e8 NIS |
900 | if (!PL_known_layers) |
901 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 902 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 903 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
904 | } |
905 | ||
1141d9f8 | 906 | int |
fcf2db38 | 907 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 908 | { |
97aff369 | 909 | dVAR; |
14a5cf38 JH |
910 | if (names) { |
911 | const char *s = names; | |
912 | while (*s) { | |
913 | while (isSPACE(*s) || *s == ':') | |
914 | s++; | |
915 | if (*s) { | |
916 | STRLEN llen = 0; | |
917 | const char *e = s; | |
bd61b366 | 918 | const char *as = NULL; |
14a5cf38 JH |
919 | STRLEN alen = 0; |
920 | if (!isIDFIRST(*s)) { | |
921 | /* | |
922 | * Message is consistent with how attribute lists are | |
923 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 924 | * seen as an invalid separator character. |
14a5cf38 | 925 | */ |
de009b76 | 926 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
927 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
928 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
929 | q, *s, q, s); | |
93189314 | 930 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
931 | return -1; |
932 | } | |
933 | do { | |
934 | e++; | |
0eb30aeb | 935 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
936 | llen = e - s; |
937 | if (*e == '(') { | |
938 | int nesting = 1; | |
939 | as = ++e; | |
940 | while (nesting) { | |
941 | switch (*e++) { | |
942 | case ')': | |
943 | if (--nesting == 0) | |
944 | alen = (e - 1) - as; | |
945 | break; | |
946 | case '(': | |
947 | ++nesting; | |
948 | break; | |
949 | case '\\': | |
950 | /* | |
951 | * It's a nul terminated string, not allowed | |
952 | * to \ the terminating null. Anything other | |
71200d45 | 953 | * character is passed over. |
14a5cf38 JH |
954 | */ |
955 | if (*e++) { | |
956 | break; | |
957 | } | |
958 | /* | |
71200d45 | 959 | * Drop through |
14a5cf38 JH |
960 | */ |
961 | case '\0': | |
962 | e--; | |
a2a5de95 NC |
963 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
964 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
965 | (int) (e - s), s); | |
14a5cf38 JH |
966 | return -1; |
967 | default: | |
968 | /* | |
71200d45 | 969 | * boring. |
14a5cf38 JH |
970 | */ |
971 | break; | |
972 | } | |
973 | } | |
974 | } | |
975 | if (e > s) { | |
46c461b5 | 976 | PerlIO_funcs * const layer = |
14a5cf38 JH |
977 | PerlIO_find_layer(aTHX_ s, llen, 1); |
978 | if (layer) { | |
a951d81d BL |
979 | SV *arg = NULL; |
980 | if (as) | |
981 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 982 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 983 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 984 | SvREFCNT_dec(arg); |
14a5cf38 JH |
985 | } |
986 | else { | |
a2a5de95 NC |
987 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
988 | (int) llen, s); | |
14a5cf38 JH |
989 | return -1; |
990 | } | |
991 | } | |
992 | s = e; | |
993 | } | |
994 | } | |
995 | } | |
996 | return 0; | |
1141d9f8 NIS |
997 | } |
998 | ||
dfebf958 | 999 | void |
fcf2db38 | 1000 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1001 | { |
97aff369 | 1002 | dVAR; |
27da23d5 | 1003 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1004 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1005 | tab = &PerlIO_crlf; |
846be114 | 1006 | #else |
6ce75a77 | 1007 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1008 | tab = &PerlIO_stdio; |
846be114 | 1009 | #endif |
14a5cf38 | 1010 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1011 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1012 | &PL_sv_undef); |
dfebf958 NIS |
1013 | } |
1014 | ||
e3f3bf95 | 1015 | SV * |
14a5cf38 | 1016 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1017 | { |
14a5cf38 | 1018 | return av->array[n].arg; |
e3f3bf95 NIS |
1019 | } |
1020 | ||
f3862f8b | 1021 | PerlIO_funcs * |
14a5cf38 | 1022 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1023 | { |
14a5cf38 JH |
1024 | if (n >= 0 && n < av->cur) { |
1025 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1026 | av->array[n].funcs->name); | |
1027 | return av->array[n].funcs; | |
1028 | } | |
1029 | if (!def) | |
1030 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1031 | return def; | |
e3f3bf95 NIS |
1032 | } |
1033 | ||
4ec2216f NIS |
1034 | IV |
1035 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1036 | { | |
8772537c AL |
1037 | PERL_UNUSED_ARG(mode); |
1038 | PERL_UNUSED_ARG(arg); | |
1039 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1040 | if (PerlIOValid(f)) { |
1041 | PerlIO_flush(f); | |
1042 | PerlIO_pop(aTHX_ f); | |
1043 | return 0; | |
1044 | } | |
1045 | return -1; | |
1046 | } | |
1047 | ||
27da23d5 | 1048 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1049 | sizeof(PerlIO_funcs), |
1050 | "pop", | |
1051 | 0, | |
1052 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1053 | PerlIOPop_pushed, | |
1054 | NULL, | |
c0888ace | 1055 | PerlIOBase_open, |
4ec2216f NIS |
1056 | NULL, |
1057 | NULL, | |
1058 | NULL, | |
1059 | NULL, | |
1060 | NULL, | |
1061 | NULL, | |
1062 | NULL, | |
1063 | NULL, | |
de009b76 AL |
1064 | NULL, |
1065 | NULL, | |
4ec2216f NIS |
1066 | NULL, /* flush */ |
1067 | NULL, /* fill */ | |
1068 | NULL, | |
1069 | NULL, | |
1070 | NULL, | |
1071 | NULL, | |
1072 | NULL, /* get_base */ | |
1073 | NULL, /* get_bufsiz */ | |
1074 | NULL, /* get_ptr */ | |
1075 | NULL, /* get_cnt */ | |
1076 | NULL, /* set_ptrcnt */ | |
1077 | }; | |
1078 | ||
fcf2db38 | 1079 | PerlIO_list_t * |
e3f3bf95 NIS |
1080 | PerlIO_default_layers(pTHX) |
1081 | { | |
97aff369 | 1082 | dVAR; |
3a1ee7e8 | 1083 | if (!PL_def_layerlist) { |
284167a5 | 1084 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1085 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1086 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1087 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1088 | #if defined(WIN32) |
27da23d5 | 1089 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1090 | #if 0 |
14a5cf38 | 1091 | osLayer = &PerlIO_win32; |
0c4128ad | 1092 | #endif |
2f8118af | 1093 | #endif |
27da23d5 JH |
1094 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1095 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1096 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1097 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1098 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1099 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1100 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1101 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1102 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1103 | &PL_sv_undef); | |
1104 | if (s) { | |
3a1ee7e8 | 1105 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1106 | } |
1107 | else { | |
3a1ee7e8 | 1108 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1109 | } |
1141d9f8 | 1110 | } |
3a1ee7e8 NIS |
1111 | if (PL_def_layerlist->cur < 2) { |
1112 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1113 | } |
3a1ee7e8 | 1114 | return PL_def_layerlist; |
e3f3bf95 NIS |
1115 | } |
1116 | ||
0c4f7ff0 NIS |
1117 | void |
1118 | Perl_boot_core_PerlIO(pTHX) | |
1119 | { | |
1120 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1121 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1122 | __FILE__); | |
0c4f7ff0 | 1123 | #endif |
14a5cf38 | 1124 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1125 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1126 | } |
e3f3bf95 NIS |
1127 | |
1128 | PerlIO_funcs * | |
1129 | PerlIO_default_layer(pTHX_ I32 n) | |
1130 | { | |
97aff369 | 1131 | dVAR; |
46c461b5 | 1132 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1133 | if (n < 0) |
1134 | n += av->cur; | |
27da23d5 | 1135 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1136 | } |
1137 | ||
a999f61b NIS |
1138 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1139 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1140 | |
1141 | void | |
1141d9f8 | 1142 | PerlIO_stdstreams(pTHX) |
60382766 | 1143 | { |
97aff369 | 1144 | dVAR; |
a1ea730d | 1145 | if (!PL_perlio) { |
8995e67d | 1146 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1147 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1148 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1149 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1150 | } | |
60382766 NIS |
1151 | } |
1152 | ||
1153 | PerlIO * | |
27da23d5 | 1154 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1155 | { |
16865ff7 | 1156 | VERIFY_HEAD(f); |
2dc2558e | 1157 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1158 | Perl_croak( aTHX_ |
5cf96513 RB |
1159 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1160 | "PerlIO layer function table size", (UV)tab->fsize, | |
1161 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1162 | } |
1163 | if (tab->size) { | |
b464bac0 | 1164 | PerlIOl *l; |
2dc2558e | 1165 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1166 | Perl_croak( aTHX_ |
5cf96513 RB |
1167 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1168 | "PerlIO layer instance size", (UV)tab->size, | |
1169 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1170 | } |
1171 | /* Real layer with a data area */ | |
002e75cf JH |
1172 | if (f) { |
1173 | char *temp; | |
1174 | Newxz(temp, tab->size, char); | |
1175 | l = (PerlIOl*)temp; | |
1176 | if (l) { | |
1177 | l->next = *f; | |
1178 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1179 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1180 | *f = l; |
1181 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1182 | (void*)f, tab->name, | |
1183 | (mode) ? mode : "(Null)", (void*)arg); | |
1184 | if (*l->tab->Pushed && | |
1185 | (*l->tab->Pushed) | |
1186 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1187 | PerlIO_pop(aTHX_ f); | |
1188 | return NULL; | |
1189 | } | |
2dc2558e | 1190 | } |
002e75cf JH |
1191 | else |
1192 | return NULL; | |
2dc2558e NIS |
1193 | } |
1194 | } | |
1195 | else if (f) { | |
1196 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1197 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1198 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1199 | if (tab->Pushed && |
27da23d5 | 1200 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1201 | return NULL; |
14a5cf38 JH |
1202 | } |
1203 | } | |
1204 | return f; | |
60382766 NIS |
1205 | } |
1206 | ||
81fe74fb LT |
1207 | PerlIO * |
1208 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1209 | IV n, const char *mode, int fd, int imode, int perm, | |
1210 | PerlIO *old, int narg, SV **args) | |
1211 | { | |
1212 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1213 | if (tab && tab->Open) { | |
1214 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1215 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1216 | PerlIO_close(ret); |
1217 | return NULL; | |
1218 | } | |
1219 | return ret; | |
1220 | } | |
1221 | SETERRNO(EINVAL, LIB_INVARG); | |
1222 | return NULL; | |
1223 | } | |
1224 | ||
dfebf958 | 1225 | IV |
86e05cf2 NIS |
1226 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1227 | { | |
1228 | if (PerlIOValid(f)) { | |
1229 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1230 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1231 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1232 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1233 | } | |
1234 | else { | |
1235 | /* Not suitable - pop it */ | |
1236 | PerlIO_pop(aTHX_ f); | |
1237 | } | |
1238 | return 0; | |
1239 | } | |
1240 | return -1; | |
1241 | } | |
1242 | ||
1243 | IV | |
2dc2558e | 1244 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1245 | { |
8772537c AL |
1246 | PERL_UNUSED_ARG(mode); |
1247 | PERL_UNUSED_ARG(arg); | |
1248 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1249 | |
04892f78 | 1250 | if (PerlIOValid(f)) { |
86e05cf2 | 1251 | PerlIO *t; |
de009b76 | 1252 | const PerlIOl *l; |
14a5cf38 | 1253 | PerlIO_flush(f); |
86e05cf2 NIS |
1254 | /* |
1255 | * Strip all layers that are not suitable for a raw stream | |
1256 | */ | |
1257 | t = f; | |
1258 | while (t && (l = *t)) { | |
cc6623a8 | 1259 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1260 | /* Has a handler - normal case */ |
9d97e8b8 | 1261 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1262 | if (*t == l) { |
1263 | /* Layer still there - move down a layer */ | |
1264 | t = PerlIONext(t); | |
1265 | } | |
1266 | } | |
1267 | else { | |
1268 | return -1; | |
1269 | } | |
14a5cf38 JH |
1270 | } |
1271 | else { | |
86e05cf2 NIS |
1272 | /* No handler - pop it */ |
1273 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1274 | } |
1275 | } | |
86e05cf2 | 1276 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1277 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1278 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1279 | return 0; |
1280 | } | |
14a5cf38 JH |
1281 | } |
1282 | return -1; | |
dfebf958 NIS |
1283 | } |
1284 | ||
ac27b0f5 | 1285 | int |
14a5cf38 | 1286 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1287 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1288 | { |
14a5cf38 JH |
1289 | int code = 0; |
1290 | while (n < max) { | |
8772537c | 1291 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1292 | if (tab) { |
1293 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1294 | code = -1; | |
1295 | break; | |
1296 | } | |
1297 | } | |
1298 | n++; | |
1299 | } | |
1300 | return code; | |
e3f3bf95 NIS |
1301 | } |
1302 | ||
1303 | int | |
ac27b0f5 NIS |
1304 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1305 | { | |
14a5cf38 | 1306 | int code = 0; |
da0fccaa DG |
1307 | ENTER; |
1308 | save_scalar(PL_errgv); | |
53f1b6d2 | 1309 | if (f && names) { |
8772537c | 1310 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1311 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1312 | if (code == 0) { | |
d9dac8cd | 1313 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1314 | } |
3a1ee7e8 | 1315 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1316 | } |
da0fccaa | 1317 | LEAVE; |
14a5cf38 | 1318 | return code; |
ac27b0f5 NIS |
1319 | } |
1320 | ||
f3862f8b | 1321 | |
60382766 | 1322 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1323 | /* |
71200d45 | 1324 | * Given the abstraction above the public API functions |
14a5cf38 | 1325 | */ |
60382766 NIS |
1326 | |
1327 | int | |
f5b9d040 | 1328 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1329 | { |
68b5363f | 1330 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1331 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1332 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1333 | iotype, mode, (names) ? names : "(Null)"); |
1334 | ||
03c0554d NIS |
1335 | if (names) { |
1336 | /* Do not flush etc. if (e.g.) switching encodings. | |
1337 | if a pushed layer knows it needs to flush lower layers | |
1338 | (for example :unix which is never going to call them) | |
1339 | it can do the flush when it is pushed. | |
1340 | */ | |
1341 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1342 | } | |
1343 | else { | |
86e05cf2 | 1344 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1345 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1346 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1347 | O_BINARY so we can look for it in mode. | |
1348 | */ | |
1349 | if (!(mode & O_BINARY)) { | |
1350 | /* Text mode */ | |
86e05cf2 NIS |
1351 | /* FIXME?: Looking down the layer stack seems wrong, |
1352 | but is a way of reaching past (say) an encoding layer | |
1353 | to flip CRLF-ness of the layer(s) below | |
1354 | */ | |
03c0554d NIS |
1355 | while (*f) { |
1356 | /* Perhaps we should turn on bottom-most aware layer | |
1357 | e.g. Ilya's idea that UNIX TTY could serve | |
1358 | */ | |
cc6623a8 DM |
1359 | if (PerlIOBase(f)->tab && |
1360 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1361 | { | |
03c0554d NIS |
1362 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1363 | /* Not in text mode - flush any pending stuff and flip it */ | |
1364 | PerlIO_flush(f); | |
1365 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1366 | } | |
1367 | /* Only need to turn it on in one layer so we are done */ | |
1368 | return TRUE; | |
ed53a2bb | 1369 | } |
03c0554d | 1370 | f = PerlIONext(f); |
14a5cf38 | 1371 | } |
03c0554d NIS |
1372 | /* Not finding a CRLF aware layer presumably means we are binary |
1373 | which is not what was requested - so we failed | |
1374 | We _could_ push :crlf layer but so could caller | |
1375 | */ | |
1376 | return FALSE; | |
14a5cf38 | 1377 | } |
6ce75a77 | 1378 | #endif |
86e05cf2 NIS |
1379 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1380 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1381 | */ |
a0714e2c | 1382 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1383 | } |
f5b9d040 NIS |
1384 | } |
1385 | ||
f5b9d040 | 1386 | int |
e87a358a | 1387 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1388 | { |
37725cdc | 1389 | if (PerlIOValid(f)) { |
46c461b5 | 1390 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1391 | if (tab && tab->Close) |
1392 | return (*tab->Close)(aTHX_ f); | |
1393 | else | |
1394 | return PerlIOBase_close(aTHX_ f); | |
1395 | } | |
14a5cf38 | 1396 | else { |
93189314 | 1397 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1398 | return -1; |
1399 | } | |
76ced9ad NIS |
1400 | } |
1401 | ||
b931b1d9 | 1402 | int |
e87a358a | 1403 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1404 | { |
de009b76 | 1405 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1406 | while (PerlIOValid(f)) { |
1407 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1408 | if (PerlIO_lockcnt(f)) |
1409 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1410 | f = PerlIONext(f); | |
f6c77cf1 | 1411 | } |
14a5cf38 | 1412 | return code; |
b931b1d9 NIS |
1413 | } |
1414 | ||
b931b1d9 | 1415 | int |
e87a358a | 1416 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1417 | { |
97aff369 | 1418 | dVAR; |
b32dd47e | 1419 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1420 | } |
1421 | ||
1141d9f8 | 1422 | |
fcf2db38 | 1423 | static PerlIO_funcs * |
2edd7e44 NIS |
1424 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1425 | { | |
97aff369 | 1426 | dVAR; |
14a5cf38 | 1427 | /* |
71200d45 | 1428 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1429 | */ |
526fd1b4 | 1430 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1431 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1432 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1433 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1434 | if (!f) |
dcbac5bb | 1435 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1436 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1437 | return f; |
1438 | } | |
14a5cf38 JH |
1439 | |
1440 | /* | |
71200d45 | 1441 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1442 | */ |
1443 | switch (SvTYPE(sv)) { | |
1444 | case SVt_PVAV: | |
6a245ed1 | 1445 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1446 | case SVt_PVHV: |
6a245ed1 | 1447 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1448 | case SVt_PVCV: |
6a245ed1 | 1449 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1450 | case SVt_PVGV: |
6a245ed1 | 1451 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1452 | default: |
1453 | return NULL; | |
14a5cf38 | 1454 | } |
2edd7e44 NIS |
1455 | } |
1456 | ||
fcf2db38 | 1457 | PerlIO_list_t * |
14a5cf38 JH |
1458 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1459 | const char *mode, int narg, SV **args) | |
1460 | { | |
97aff369 | 1461 | dVAR; |
14a5cf38 JH |
1462 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1463 | int incdef = 1; | |
a1ea730d | 1464 | if (!PL_perlio) |
14a5cf38 JH |
1465 | PerlIO_stdstreams(aTHX); |
1466 | if (narg) { | |
dcda55fc | 1467 | SV * const arg = *args; |
14a5cf38 | 1468 | /* |
71200d45 NIS |
1469 | * If it is a reference but not an object see if we have a handler |
1470 | * for it | |
14a5cf38 JH |
1471 | */ |
1472 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1473 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1474 | if (handler) { |
3a1ee7e8 NIS |
1475 | def = PerlIO_list_alloc(aTHX); |
1476 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1477 | incdef = 0; |
1478 | } | |
1479 | /* | |
e934609f | 1480 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1481 | * something sensible else we will just stringfy and open |
71200d45 | 1482 | * resulting string. |
14a5cf38 JH |
1483 | */ |
1484 | } | |
1485 | } | |
9fe371da | 1486 | if (!layers || !*layers) |
11bcd5da | 1487 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1488 | if (layers && *layers) { |
1489 | PerlIO_list_t *av; | |
1490 | if (incdef) { | |
a951d81d | 1491 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1492 | } |
1493 | else { | |
1494 | av = def; | |
1495 | } | |
0cff2cf3 NIS |
1496 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1497 | return av; | |
1498 | } | |
1499 | else { | |
1500 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1501 | return NULL; |
0cff2cf3 | 1502 | } |
14a5cf38 JH |
1503 | } |
1504 | else { | |
1505 | if (incdef) | |
1506 | def->refcnt++; | |
1507 | return def; | |
1508 | } | |
ee518936 NIS |
1509 | } |
1510 | ||
1511 | PerlIO * | |
14a5cf38 JH |
1512 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1513 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1514 | { | |
97aff369 | 1515 | dVAR; |
14a5cf38 JH |
1516 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1517 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1518 | if (!layers || !*layers) |
11bcd5da | 1519 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1520 | if (layers && *layers) |
1521 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1522 | } | |
1523 | } | |
1524 | else { | |
de009b76 | 1525 | PerlIO_list_t *layera; |
14a5cf38 JH |
1526 | IV n; |
1527 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1528 | if (PerlIOValid(f)) { |
14a5cf38 | 1529 | /* |
71200d45 NIS |
1530 | * This is "reopen" - it is not tested as perl does not use it |
1531 | * yet | |
14a5cf38 JH |
1532 | */ |
1533 | PerlIOl *l = *f; | |
3a1ee7e8 | 1534 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1535 | while (l) { |
a951d81d | 1536 | SV *arg = NULL; |
cc6623a8 | 1537 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1538 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1539 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1540 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1541 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1542 | l = *PerlIONext(&l); |
1543 | } | |
1544 | } | |
1545 | else { | |
1546 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1547 | if (!layera) { |
1548 | return NULL; | |
1549 | } | |
14a5cf38 JH |
1550 | } |
1551 | /* | |
71200d45 | 1552 | * Start at "top" of layer stack |
14a5cf38 JH |
1553 | */ |
1554 | n = layera->cur - 1; | |
1555 | while (n >= 0) { | |
46c461b5 | 1556 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1557 | if (t && t->Open) { |
1558 | tab = t; | |
1559 | break; | |
1560 | } | |
1561 | n--; | |
1562 | } | |
1563 | if (tab) { | |
1564 | /* | |
71200d45 | 1565 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1566 | */ |
7cf31beb | 1567 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1568 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1569 | } |
14a5cf38 | 1570 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1571 | tab->name, layers ? layers : "(Null)", mode, fd, |
1572 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1573 | if (tab->Open) |
1574 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1575 | f, narg, args); | |
1576 | else { | |
1577 | SETERRNO(EINVAL, LIB_INVARG); | |
1578 | f = NULL; | |
1579 | } | |
14a5cf38 JH |
1580 | if (f) { |
1581 | if (n + 1 < layera->cur) { | |
1582 | /* | |
1583 | * More layers above the one that we used to open - | |
71200d45 | 1584 | * apply them now |
14a5cf38 | 1585 | */ |
d9dac8cd NIS |
1586 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1587 | /* If pushing layers fails close the file */ | |
1588 | PerlIO_close(f); | |
14a5cf38 JH |
1589 | f = NULL; |
1590 | } | |
1591 | } | |
1592 | } | |
1593 | } | |
3a1ee7e8 | 1594 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1595 | } |
1596 | return f; | |
ee518936 | 1597 | } |
b931b1d9 NIS |
1598 | |
1599 | ||
9e353e3b | 1600 | SSize_t |
e87a358a | 1601 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1602 | { |
7918f24d NC |
1603 | PERL_ARGS_ASSERT_PERLIO_READ; |
1604 | ||
b32dd47e | 1605 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1606 | } |
1607 | ||
313ca112 | 1608 | SSize_t |
e87a358a | 1609 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1610 | { |
7918f24d NC |
1611 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1612 | ||
b32dd47e | 1613 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1614 | } |
1615 | ||
9e353e3b | 1616 | SSize_t |
e87a358a | 1617 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1618 | { |
7918f24d NC |
1619 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1620 | ||
b32dd47e | 1621 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1622 | } |
1623 | ||
6f9d8c32 | 1624 | int |
e87a358a | 1625 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1626 | { |
b32dd47e | 1627 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1628 | } |
1629 | ||
9e353e3b | 1630 | Off_t |
e87a358a | 1631 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1632 | { |
b32dd47e | 1633 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1634 | } |
1635 | ||
6f9d8c32 | 1636 | int |
e87a358a | 1637 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1638 | { |
97aff369 | 1639 | dVAR; |
14a5cf38 JH |
1640 | if (f) { |
1641 | if (*f) { | |
de009b76 | 1642 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1643 | |
1644 | if (tab && tab->Flush) | |
f62ce20a | 1645 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1646 | else |
1647 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1648 | } |
1649 | else { | |
fe5a182c | 1650 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1651 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1652 | return -1; |
1653 | } | |
1654 | } | |
1655 | else { | |
1656 | /* | |
1657 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1658 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1659 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1660 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1661 | * decisions? --jhi |
14a5cf38 | 1662 | */ |
303f2dc3 DM |
1663 | PerlIOl **table = &PL_perlio; |
1664 | PerlIOl *ff; | |
14a5cf38 | 1665 | int code = 0; |
303f2dc3 | 1666 | while ((ff = *table)) { |
14a5cf38 | 1667 | int i; |
303f2dc3 | 1668 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1669 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1670 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1671 | code = -1; |
303f2dc3 | 1672 | ff++; |
14a5cf38 JH |
1673 | } |
1674 | } | |
1675 | return code; | |
1676 | } | |
760ac839 LW |
1677 | } |
1678 | ||
a9c883f6 | 1679 | void |
f62ce20a | 1680 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1681 | { |
97aff369 | 1682 | dVAR; |
303f2dc3 DM |
1683 | PerlIOl **table = &PL_perlio; |
1684 | PerlIOl *f; | |
14a5cf38 JH |
1685 | while ((f = *table)) { |
1686 | int i; | |
303f2dc3 | 1687 | table = (PerlIOl **) (f++); |
14a5cf38 | 1688 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1689 | if (f->next |
1690 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1691 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1692 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1693 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1694 | f++; |
1695 | } | |
a9c883f6 | 1696 | } |
a9c883f6 NIS |
1697 | } |
1698 | ||
06da4f11 | 1699 | int |
e87a358a | 1700 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1701 | { |
b32dd47e | 1702 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1703 | } |
1704 | ||
f3862f8b NIS |
1705 | int |
1706 | PerlIO_isutf8(PerlIO *f) | |
1707 | { | |
1b7a0411 JH |
1708 | if (PerlIOValid(f)) |
1709 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1710 | else | |
1711 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1712 | |
1b7a0411 | 1713 | return -1; |
f3862f8b NIS |
1714 | } |
1715 | ||
6f9d8c32 | 1716 | int |
e87a358a | 1717 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1718 | { |
b32dd47e | 1719 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1720 | } |
1721 | ||
9e353e3b | 1722 | int |
e87a358a | 1723 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1724 | { |
b32dd47e | 1725 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1726 | } |
1727 | ||
9e353e3b | 1728 | void |
e87a358a | 1729 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1730 | { |
b32dd47e | 1731 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1732 | } |
1733 | ||
9e353e3b | 1734 | void |
e87a358a | 1735 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1736 | { |
b32dd47e | 1737 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1738 | } |
1739 | ||
9e353e3b NIS |
1740 | int |
1741 | PerlIO_has_base(PerlIO *f) | |
1742 | { | |
1b7a0411 | 1743 | if (PerlIOValid(f)) { |
46c461b5 | 1744 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1745 | |
1746 | if (tab) | |
1747 | return (tab->Get_base != NULL); | |
1b7a0411 | 1748 | } |
1b7a0411 JH |
1749 | |
1750 | return 0; | |
760ac839 LW |
1751 | } |
1752 | ||
9e353e3b NIS |
1753 | int |
1754 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1755 | { |
d7dfc388 SK |
1756 | if (PerlIOValid(f)) { |
1757 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1758 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1759 | |
d7dfc388 SK |
1760 | if (tab) |
1761 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1762 | } |
14a5cf38 | 1763 | } |
1b7a0411 | 1764 | |
14a5cf38 | 1765 | return 0; |
9e353e3b NIS |
1766 | } |
1767 | ||
9e353e3b NIS |
1768 | int |
1769 | PerlIO_has_cntptr(PerlIO *f) | |
1770 | { | |
04892f78 | 1771 | if (PerlIOValid(f)) { |
46c461b5 | 1772 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1773 | |
1774 | if (tab) | |
1775 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1776 | } |
1b7a0411 | 1777 | |
14a5cf38 | 1778 | return 0; |
9e353e3b NIS |
1779 | } |
1780 | ||
9e353e3b NIS |
1781 | int |
1782 | PerlIO_canset_cnt(PerlIO *f) | |
1783 | { | |
04892f78 | 1784 | if (PerlIOValid(f)) { |
46c461b5 | 1785 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1786 | |
1787 | if (tab) | |
1788 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1789 | } |
1b7a0411 | 1790 | |
14a5cf38 | 1791 | return 0; |
760ac839 LW |
1792 | } |
1793 | ||
888911fc | 1794 | STDCHAR * |
e87a358a | 1795 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1796 | { |
b32dd47e | 1797 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1798 | } |
1799 | ||
b66f3475 | 1800 | SSize_t |
e87a358a | 1801 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1802 | { |
b66f3475 | 1803 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1804 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1805 | } |
1806 | ||
9e353e3b | 1807 | STDCHAR * |
e87a358a | 1808 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1809 | { |
b32dd47e | 1810 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1811 | } |
1812 | ||
b66f3475 | 1813 | SSize_t |
e87a358a | 1814 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1815 | { |
b32dd47e | 1816 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1817 | } |
1818 | ||
9e353e3b | 1819 | void |
b66f3475 | 1820 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1821 | { |
b32dd47e | 1822 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1823 | } |
1824 | ||
9e353e3b | 1825 | void |
b66f3475 | 1826 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1827 | { |
b32dd47e | 1828 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1829 | } |
1830 | ||
4ec2216f | 1831 | |
9e353e3b | 1832 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1833 | /* |
71200d45 | 1834 | * utf8 and raw dummy layers |
14a5cf38 | 1835 | */ |
dfebf958 | 1836 | |
26fb694e | 1837 | IV |
2dc2558e | 1838 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1839 | { |
96a5add6 | 1840 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1841 | PERL_UNUSED_ARG(mode); |
1842 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1843 | if (PerlIOValid(f)) { |
cc6623a8 | 1844 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1845 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1846 | else | |
1847 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1848 | return 0; | |
1849 | } | |
1850 | return -1; | |
26fb694e NIS |
1851 | } |
1852 | ||
27da23d5 | 1853 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1854 | sizeof(PerlIO_funcs), |
14a5cf38 | 1855 | "utf8", |
2dc2558e | 1856 | 0, |
a778d1f5 | 1857 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1858 | PerlIOUtf8_pushed, |
1859 | NULL, | |
c0888ace | 1860 | PerlIOBase_open, |
14a5cf38 JH |
1861 | NULL, |
1862 | NULL, | |
1863 | NULL, | |
1864 | NULL, | |
1865 | NULL, | |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
de009b76 AL |
1869 | NULL, |
1870 | NULL, | |
22569500 NIS |
1871 | NULL, /* flush */ |
1872 | NULL, /* fill */ | |
14a5cf38 JH |
1873 | NULL, |
1874 | NULL, | |
1875 | NULL, | |
1876 | NULL, | |
22569500 NIS |
1877 | NULL, /* get_base */ |
1878 | NULL, /* get_bufsiz */ | |
1879 | NULL, /* get_ptr */ | |
1880 | NULL, /* get_cnt */ | |
1881 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1882 | }; |
1883 | ||
27da23d5 | 1884 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1885 | sizeof(PerlIO_funcs), |
14a5cf38 | 1886 | "bytes", |
2dc2558e | 1887 | 0, |
a778d1f5 | 1888 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1889 | PerlIOUtf8_pushed, |
1890 | NULL, | |
c0888ace | 1891 | PerlIOBase_open, |
14a5cf38 JH |
1892 | NULL, |
1893 | NULL, | |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
de009b76 AL |
1900 | NULL, |
1901 | NULL, | |
22569500 NIS |
1902 | NULL, /* flush */ |
1903 | NULL, /* fill */ | |
14a5cf38 JH |
1904 | NULL, |
1905 | NULL, | |
1906 | NULL, | |
1907 | NULL, | |
22569500 NIS |
1908 | NULL, /* get_base */ |
1909 | NULL, /* get_bufsiz */ | |
1910 | NULL, /* get_ptr */ | |
1911 | NULL, /* get_cnt */ | |
1912 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1913 | }; |
1914 | ||
27da23d5 | 1915 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1916 | sizeof(PerlIO_funcs), |
14a5cf38 | 1917 | "raw", |
2dc2558e | 1918 | 0, |
14a5cf38 JH |
1919 | PERLIO_K_DUMMY, |
1920 | PerlIORaw_pushed, | |
1921 | PerlIOBase_popped, | |
ecfd0649 | 1922 | PerlIOBase_open, |
14a5cf38 JH |
1923 | NULL, |
1924 | NULL, | |
1925 | NULL, | |
1926 | NULL, | |
1927 | NULL, | |
1928 | NULL, | |
1929 | NULL, | |
1930 | NULL, | |
de009b76 AL |
1931 | NULL, |
1932 | NULL, | |
22569500 NIS |
1933 | NULL, /* flush */ |
1934 | NULL, /* fill */ | |
14a5cf38 JH |
1935 | NULL, |
1936 | NULL, | |
1937 | NULL, | |
1938 | NULL, | |
22569500 NIS |
1939 | NULL, /* get_base */ |
1940 | NULL, /* get_bufsiz */ | |
1941 | NULL, /* get_ptr */ | |
1942 | NULL, /* get_cnt */ | |
1943 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1944 | }; |
1945 | /*--------------------------------------------------------------------------------------*/ | |
1946 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1947 | /* |
71200d45 | 1948 | * "Methods" of the "base class" |
14a5cf38 | 1949 | */ |
9e353e3b NIS |
1950 | |
1951 | IV | |
f62ce20a | 1952 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1953 | { |
04892f78 | 1954 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1955 | } |
1956 | ||
f5b9d040 | 1957 | char * |
81428673 | 1958 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1959 | { |
1960 | char *s = buf; | |
81428673 | 1961 | if (PerlIOValid(f)) { |
de009b76 | 1962 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1963 | if (flags & PERLIO_F_APPEND) { |
1964 | *s++ = 'a'; | |
1965 | if (flags & PERLIO_F_CANREAD) { | |
1966 | *s++ = '+'; | |
1967 | } | |
14a5cf38 | 1968 | } |
81428673 NIS |
1969 | else if (flags & PERLIO_F_CANREAD) { |
1970 | *s++ = 'r'; | |
1971 | if (flags & PERLIO_F_CANWRITE) | |
1972 | *s++ = '+'; | |
1973 | } | |
1974 | else if (flags & PERLIO_F_CANWRITE) { | |
1975 | *s++ = 'w'; | |
1976 | if (flags & PERLIO_F_CANREAD) { | |
1977 | *s++ = '+'; | |
1978 | } | |
14a5cf38 | 1979 | } |
35990314 | 1980 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1981 | if (!(flags & PERLIO_F_CRLF)) |
1982 | *s++ = 'b'; | |
5f1a76d0 | 1983 | #endif |
81428673 | 1984 | } |
14a5cf38 JH |
1985 | *s = '\0'; |
1986 | return buf; | |
f5b9d040 NIS |
1987 | } |
1988 | ||
81428673 | 1989 | |
76ced9ad | 1990 | IV |
2dc2558e | 1991 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1992 | { |
de009b76 | 1993 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1994 | PERL_UNUSED_CONTEXT; |
8772537c | 1995 | PERL_UNUSED_ARG(arg); |
de009b76 | 1996 | |
14a5cf38 JH |
1997 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1998 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 1999 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
2000 | l->flags |= PERLIO_F_FASTGETS; |
2001 | if (mode) { | |
3b6c1aba | 2002 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2003 | mode++; |
2004 | switch (*mode++) { | |
2005 | case 'r': | |
2006 | l->flags |= PERLIO_F_CANREAD; | |
2007 | break; | |
2008 | case 'a': | |
2009 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2010 | break; | |
2011 | case 'w': | |
2012 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2013 | break; | |
2014 | default: | |
93189314 | 2015 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2016 | return -1; |
2017 | } | |
2018 | while (*mode) { | |
2019 | switch (*mode++) { | |
2020 | case '+': | |
2021 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2022 | break; | |
2023 | case 'b': | |
2024 | l->flags &= ~PERLIO_F_CRLF; | |
2025 | break; | |
2026 | case 't': | |
2027 | l->flags |= PERLIO_F_CRLF; | |
2028 | break; | |
2029 | default: | |
93189314 | 2030 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2031 | return -1; |
2032 | } | |
2033 | } | |
2034 | } | |
2035 | else { | |
2036 | if (l->next) { | |
2037 | l->flags |= l->next->flags & | |
2038 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2039 | PERLIO_F_APPEND); | |
2040 | } | |
2041 | } | |
5e2ab84b | 2042 | #if 0 |
14a5cf38 | 2043 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2044 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2045 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2046 | #endif |
14a5cf38 | 2047 | return 0; |
76ced9ad NIS |
2048 | } |
2049 | ||
2050 | IV | |
f62ce20a | 2051 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2052 | { |
96a5add6 | 2053 | PERL_UNUSED_CONTEXT; |
8772537c | 2054 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2055 | return 0; |
760ac839 LW |
2056 | } |
2057 | ||
9e353e3b | 2058 | SSize_t |
f62ce20a | 2059 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2060 | { |
14a5cf38 | 2061 | /* |
71200d45 | 2062 | * Save the position as current head considers it |
14a5cf38 | 2063 | */ |
de009b76 | 2064 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2065 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2066 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2067 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2068 | } |
2069 | ||
f6c77cf1 | 2070 | SSize_t |
f62ce20a | 2071 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2072 | { |
14a5cf38 JH |
2073 | STDCHAR *buf = (STDCHAR *) vbuf; |
2074 | if (f) { | |
263df5f1 JH |
2075 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2076 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2077 | SETERRNO(EBADF, SS_IVCHAN); | |
2078 | return 0; | |
2079 | } | |
14a5cf38 | 2080 | while (count > 0) { |
93c2c2ec IZ |
2081 | get_cnt: |
2082 | { | |
14a5cf38 JH |
2083 | SSize_t avail = PerlIO_get_cnt(f); |
2084 | SSize_t take = 0; | |
2085 | if (avail > 0) | |
94e529cc | 2086 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2087 | if (take > 0) { |
2088 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2089 | Copy(ptr, buf, take, STDCHAR); | |
2090 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2091 | count -= take; | |
2092 | buf += take; | |
93c2c2ec IZ |
2093 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2094 | goto get_cnt; | |
14a5cf38 JH |
2095 | } |
2096 | if (count > 0 && avail <= 0) { | |
2097 | if (PerlIO_fill(f) != 0) | |
2098 | break; | |
2099 | } | |
93c2c2ec | 2100 | } |
14a5cf38 JH |
2101 | } |
2102 | return (buf - (STDCHAR *) vbuf); | |
2103 | } | |
f6c77cf1 | 2104 | return 0; |
f6c77cf1 NIS |
2105 | } |
2106 | ||
9e353e3b | 2107 | IV |
f62ce20a | 2108 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2109 | { |
96a5add6 | 2110 | PERL_UNUSED_CONTEXT; |
8772537c | 2111 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2112 | return 0; |
9e353e3b NIS |
2113 | } |
2114 | ||
2115 | IV | |
f62ce20a | 2116 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2117 | { |
96a5add6 | 2118 | PERL_UNUSED_CONTEXT; |
8772537c | 2119 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2120 | return -1; |
06da4f11 NIS |
2121 | } |
2122 | ||
2123 | IV | |
f62ce20a | 2124 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2125 | { |
37725cdc NIS |
2126 | IV code = -1; |
2127 | if (PerlIOValid(f)) { | |
2128 | PerlIO *n = PerlIONext(f); | |
2129 | code = PerlIO_flush(f); | |
2130 | PerlIOBase(f)->flags &= | |
2131 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2132 | while (PerlIOValid(n)) { | |
de009b76 | 2133 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2134 | if (tab && tab->Close) { |
2135 | if ((*tab->Close)(aTHX_ n) != 0) | |
2136 | code = -1; | |
2137 | break; | |
2138 | } | |
2139 | else { | |
2140 | PerlIOBase(n)->flags &= | |
2141 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2142 | } | |
2143 | n = PerlIONext(n); | |
2144 | } | |
2145 | } | |
2146 | else { | |
2147 | SETERRNO(EBADF, SS_IVCHAN); | |
2148 | } | |
14a5cf38 | 2149 | return code; |
9e353e3b NIS |
2150 | } |
2151 | ||
2152 | IV | |
f62ce20a | 2153 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2154 | { |
96a5add6 | 2155 | PERL_UNUSED_CONTEXT; |
04892f78 | 2156 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2157 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2158 | } | |
2159 | return 1; | |
9e353e3b NIS |
2160 | } |
2161 | ||
2162 | IV | |
f62ce20a | 2163 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2164 | { |
96a5add6 | 2165 | PERL_UNUSED_CONTEXT; |
04892f78 | 2166 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2167 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2168 | } | |
2169 | return 1; | |
9e353e3b NIS |
2170 | } |
2171 | ||
2172 | void | |
f62ce20a | 2173 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2174 | { |
04892f78 | 2175 | if (PerlIOValid(f)) { |
dcda55fc | 2176 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2177 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2178 | if (PerlIOValid(n)) |
14a5cf38 JH |
2179 | PerlIO_clearerr(n); |
2180 | } | |
9e353e3b NIS |
2181 | } |
2182 | ||
2183 | void | |
f62ce20a | 2184 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2185 | { |
96a5add6 | 2186 | PERL_UNUSED_CONTEXT; |
04892f78 | 2187 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2188 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2189 | } | |
9e353e3b NIS |
2190 | } |
2191 | ||
93a8090d NIS |
2192 | SV * |
2193 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2194 | { | |
2195 | if (!arg) | |
a0714e2c | 2196 | return NULL; |
24d147a6 | 2197 | #ifdef USE_ITHREADS |
93a8090d | 2198 | if (param) { |
a951d81d BL |
2199 | arg = sv_dup(arg, param); |
2200 | SvREFCNT_inc_simple_void_NN(arg); | |
2201 | return arg; | |
93a8090d NIS |
2202 | } |
2203 | else { | |
2204 | return newSVsv(arg); | |
2205 | } | |
2206 | #else | |
1b6737cc | 2207 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2208 | return newSVsv(arg); |
2209 | #endif | |
2210 | } | |
2211 | ||
2212 | PerlIO * | |
ecdeb87c | 2213 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2214 | { |
1b6737cc | 2215 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2216 | if (PerlIOValid(nexto)) { |
de009b76 | 2217 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2218 | if (tab && tab->Dup) |
2219 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2220 | else | |
2221 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2222 | } |
2223 | if (f) { | |
dcda55fc | 2224 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2225 | SV *arg = NULL; |
93a8090d | 2226 | char buf[8]; |
316ebaf2 | 2227 | assert(self); |
fe5a182c | 2228 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2229 | self ? self->name : "(Null)", |
2230 | (void*)f, (void*)o, (void*)param); | |
2231 | if (self && self->Getarg) | |
210e727c | 2232 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2233 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2234 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2235 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2236 | SvREFCNT_dec(arg); |
93a8090d NIS |
2237 | } |
2238 | return f; | |
2239 | } | |
2240 | ||
27da23d5 | 2241 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2242 | |
8b84d7dd | 2243 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2244 | static void |
2245 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2246 | dVAR; |
22c96fc1 | 2247 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2248 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2249 | int *new_array; |
2250 | ||
2251 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2252 | old_max, new_fd, new_max); | |
2253 | ||
2254 | if (new_fd < old_max) { | |
2255 | return; | |
2256 | } | |
2257 | ||
f4ae5be6 NC |
2258 | assert (new_max > new_fd); |
2259 | ||
eae082a0 JH |
2260 | /* Use plain realloc() since we need this memory to be really |
2261 | * global and visible to all the interpreters and/or threads. */ | |
2262 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2263 | |
2264 | if (!new_array) { | |
8b84d7dd | 2265 | #ifdef USE_ITHREADS |
6cb8cb21 | 2266 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2267 | #endif |
4cbe3a7d | 2268 | croak_no_mem(); |
22c96fc1 NC |
2269 | } |
2270 | ||
2271 | PL_perlio_fd_refcnt_size = new_max; | |
2272 | PL_perlio_fd_refcnt = new_array; | |
2273 | ||
95b63a38 JH |
2274 | PerlIO_debug("Zeroing %p, %d\n", |
2275 | (void*)(new_array + old_max), | |
2276 | new_max - old_max); | |
22c96fc1 NC |
2277 | |
2278 | Zero(new_array + old_max, new_max - old_max, int); | |
2279 | } | |
2280 | ||
2281 | ||
93a8090d NIS |
2282 | void |
2283 | PerlIO_init(pTHX) | |
2284 | { | |
8b84d7dd | 2285 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2286 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2287 | } |
2288 | ||
168d5872 NIS |
2289 | void |
2290 | PerlIOUnix_refcnt_inc(int fd) | |
2291 | { | |
27da23d5 | 2292 | dTHX; |
22c96fc1 | 2293 | if (fd >= 0) { |
97aff369 | 2294 | dVAR; |
22c96fc1 | 2295 | |
8b84d7dd | 2296 | #ifdef USE_ITHREADS |
6cb8cb21 | 2297 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2298 | #endif |
22c96fc1 NC |
2299 | if (fd >= PL_perlio_fd_refcnt_size) |
2300 | S_more_refcounted_fds(aTHX_ fd); | |
2301 | ||
27da23d5 | 2302 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2303 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2304 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2305 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2306 | fd, PL_perlio_fd_refcnt[fd]); | |
2307 | } | |
2308 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2309 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2310 | |
8b84d7dd | 2311 | #ifdef USE_ITHREADS |
6cb8cb21 | 2312 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2313 | #endif |
8b84d7dd | 2314 | } else { |
12605ff9 | 2315 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2316 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2317 | } |
2318 | } | |
2319 | ||
168d5872 NIS |
2320 | int |
2321 | PerlIOUnix_refcnt_dec(int fd) | |
2322 | { | |
2323 | int cnt = 0; | |
22c96fc1 | 2324 | if (fd >= 0) { |
97aff369 | 2325 | dVAR; |
8b84d7dd | 2326 | #ifdef USE_ITHREADS |
6cb8cb21 | 2327 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2328 | #endif |
8b84d7dd | 2329 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2330 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2331 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2332 | fd, PL_perlio_fd_refcnt_size); |
2333 | } | |
2334 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2335 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2336 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2337 | fd, PL_perlio_fd_refcnt[fd]); |
2338 | } | |
27da23d5 | 2339 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2340 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2341 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2342 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2343 | #endif |
8b84d7dd | 2344 | } else { |
12605ff9 | 2345 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2346 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2347 | } |
2348 | return cnt; | |
2349 | } | |
2350 | ||
2e0cfa16 FC |
2351 | int |
2352 | PerlIOUnix_refcnt(int fd) | |
2353 | { | |
2354 | dTHX; | |
2355 | int cnt = 0; | |
2356 | if (fd >= 0) { | |
2357 | dVAR; | |
2358 | #ifdef USE_ITHREADS | |
2359 | MUTEX_LOCK(&PL_perlio_mutex); | |
2360 | #endif | |
2361 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2362 | /* diag_listed_as: refcnt: fd %d%s */ | |
2363 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2364 | fd, PL_perlio_fd_refcnt_size); | |
2365 | } | |
2366 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2367 | /* diag_listed_as: refcnt: fd %d%s */ | |
2368 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2369 | fd, PL_perlio_fd_refcnt[fd]); | |
2370 | } | |
2371 | cnt = PL_perlio_fd_refcnt[fd]; | |
2372 | #ifdef USE_ITHREADS | |
2373 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2374 | #endif | |
2375 | } else { | |
2376 | /* diag_listed_as: refcnt: fd %d%s */ | |
2377 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2378 | } | |
2379 | return cnt; | |
2380 | } | |
2381 | ||
694c95cf JH |
2382 | void |
2383 | PerlIO_cleanup(pTHX) | |
2384 | { | |
97aff369 | 2385 | dVAR; |
694c95cf JH |
2386 | int i; |
2387 | #ifdef USE_ITHREADS | |
a25429c6 | 2388 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2389 | #else |
2390 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2391 | #endif |
e47547a8 | 2392 | |
694c95cf JH |
2393 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2394 | for (i=0; i < 3; i++) | |
2395 | PerlIOUnix_refcnt_inc(i); | |
2396 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2397 | /* Restore STDIN..STDERR refcount */ | |
2398 | for (i=0; i < 3; i++) | |
2399 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2400 | |
2401 | if (PL_known_layers) { | |
2402 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2403 | PL_known_layers = NULL; | |
2404 | } | |
27da23d5 | 2405 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2406 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2407 | PL_def_layerlist = NULL; | |
2408 | } | |
6cb8cb21 RGS |
2409 | } |
2410 | ||
0934c9d9 | 2411 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2412 | { |
53d44271 | 2413 | dVAR; |
4f3da17a DM |
2414 | #if 0 |
2415 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2416 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2417 | being present (at least in win32) :-(. | |
2418 | Disable for now. | |
2419 | */ | |
6cb8cb21 RGS |
2420 | #ifdef DEBUGGING |
2421 | { | |
2422 | /* By now all filehandles should have been closed, so any | |
2423 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2424 | * errors. */ | |
77db880c JH |
2425 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2426 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2427 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2428 | int i; |
2429 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2430 | if (PL_perlio_fd_refcnt[i]) { |
2431 | const STRLEN len = | |
2432 | my_snprintf(buf, sizeof(buf), | |
2433 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2434 | i, PL_perlio_fd_refcnt[i]); | |
2435 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2436 | } | |
6cb8cb21 RGS |
2437 | } |
2438 | } | |
2439 | #endif | |
4f3da17a | 2440 | #endif |
eae082a0 JH |
2441 | /* Not bothering with PL_perlio_mutex since by now |
2442 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2443 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2444 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2445 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2446 | PL_perlio_fd_refcnt = NULL; |
2447 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2448 | } |
694c95cf JH |
2449 | } |
2450 | ||
9e353e3b | 2451 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2452 | /* |
71200d45 | 2453 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2454 | */ |
9e353e3b | 2455 | |
14a5cf38 | 2456 | typedef struct { |
22569500 NIS |
2457 | struct _PerlIO base; /* The generic part */ |
2458 | int fd; /* UNIX like file descriptor */ | |
2459 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2460 | } PerlIOUnix; |
2461 | ||
abf9167d DM |
2462 | static void |
2463 | S_lockcnt_dec(pTHX_ const void* f) | |
2464 | { | |
2465 | PerlIO_lockcnt((PerlIO*)f)--; | |
2466 | } | |
2467 | ||
2468 | ||
2469 | /* call the signal handler, and if that handler happens to clear | |
2470 | * this handle, free what we can and return true */ | |
2471 | ||
2472 | static bool | |
2473 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2474 | ENTER; | |
2475 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2476 | PerlIO_lockcnt(f)++; | |
2477 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2478 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2479 | LEAVE; | |
abf9167d | 2480 | return 0; |
be48bbe8 | 2481 | } |
abf9167d DM |
2482 | /* we've just run some perl-level code that could have done |
2483 | * anything, including closing the file or clearing this layer. | |
2484 | * If so, free any lower layers that have already been | |
2485 | * cleared, then return an error. */ | |
2486 | while (PerlIOValid(f) && | |
2487 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2488 | { | |
2489 | const PerlIOl *l = *f; | |
2490 | *f = l->next; | |
2491 | Safefree(l); | |
2492 | } | |
be48bbe8 | 2493 | LEAVE; |
abf9167d DM |
2494 | return 1; |
2495 | } | |
2496 | ||
6f9d8c32 | 2497 | int |
9e353e3b | 2498 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2499 | { |
14a5cf38 | 2500 | int oflags = -1; |
3b6c1aba | 2501 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2502 | mode++; |
2503 | switch (*mode) { | |
2504 | case 'r': | |
2505 | oflags = O_RDONLY; | |
2506 | if (*++mode == '+') { | |
2507 | oflags = O_RDWR; | |
2508 | mode++; | |
2509 | } | |
2510 | break; | |
2511 | ||
2512 | case 'w': | |
2513 | oflags = O_CREAT | O_TRUNC; | |
2514 | if (*++mode == '+') { | |
2515 | oflags |= O_RDWR; | |
2516 | mode++; | |
2517 | } | |
2518 | else | |
2519 | oflags |= O_WRONLY; | |
2520 | break; | |
2521 | ||
2522 | case 'a': | |
2523 | oflags = O_CREAT | O_APPEND; | |
2524 | if (*++mode == '+') { | |
2525 | oflags |= O_RDWR; | |
2526 | mode++; | |
2527 | } | |
2528 | else | |
2529 | oflags |= O_WRONLY; | |
2530 | break; | |
2531 | } | |
38d96942 | 2532 | #ifdef PERLIO_BINARY_AND_TEXT_DIFFERENT_AND_EFFECTIVE |
14a5cf38 JH |
2533 | if (*mode == 'b') { |
2534 | oflags |= O_BINARY; | |
2535 | oflags &= ~O_TEXT; | |
2536 | mode++; | |
2537 | } | |
2538 | else if (*mode == 't') { | |
2539 | oflags |= O_TEXT; | |
2540 | oflags &= ~O_BINARY; | |
2541 | mode++; | |
2542 | } | |
93f31ee9 | 2543 | else { |
93f31ee9 PG |
2544 | /* |
2545 | * If neither "t" nor "b" was specified, open the file | |
2546 | * in O_BINARY mode. | |
2547 | */ | |
2548 | oflags |= O_BINARY; | |
93f31ee9 | 2549 | } |
38d96942 | 2550 | #endif |
14a5cf38 | 2551 | if (*mode || oflags == -1) { |
93189314 | 2552 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2553 | oflags = -1; |
2554 | } | |
2555 | return oflags; | |
9e353e3b NIS |
2556 | } |
2557 | ||
2558 | IV | |
f62ce20a | 2559 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2560 | { |
96a5add6 | 2561 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2562 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2563 | } |
2564 | ||
aa063c35 NIS |
2565 | static void |
2566 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2567 | { |
de009b76 | 2568 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2569 | #if defined(WIN32) |
aa063c35 NIS |
2570 | Stat_t st; |
2571 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2572 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2573 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2574 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2575 | } | |
aa063c35 NIS |
2576 | else { |
2577 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2578 | } | |
6caa5a9c NIS |
2579 | } |
2580 | #endif | |
aa063c35 NIS |
2581 | s->fd = fd; |
2582 | s->oflags = imode; | |
2583 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2584 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2585 | } |
2586 | ||
2587 | IV | |
2588 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2589 | { | |
2590 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2591 | if (*PerlIONext(f)) { |
4b069b44 | 2592 | /* We never call down so do any pending stuff now */ |
03c0554d | 2593 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2594 | /* |
71200d45 | 2595 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2596 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2597 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2598 | */ |
acbd16bf | 2599 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2600 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2601 | } |
2602 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2603 | |
14a5cf38 | 2604 | return code; |
4b803d04 NIS |
2605 | } |
2606 | ||
c2fcde81 JH |
2607 | IV |
2608 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2609 | { | |
de009b76 | 2610 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2611 | Off_t new_loc; |
96a5add6 | 2612 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2613 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2614 | #ifdef ESPIPE | |
2615 | SETERRNO(ESPIPE, LIB_INVARG); | |
2616 | #else | |
2617 | SETERRNO(EINVAL, LIB_INVARG); | |
2618 | #endif | |
2619 | return -1; | |
2620 | } | |
0723351e NC |
2621 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2622 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2623 | return -1; |
c2fcde81 JH |
2624 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2625 | return 0; | |
2626 | } | |
2627 | ||
9e353e3b | 2628 | PerlIO * |
14a5cf38 JH |
2629 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2630 | IV n, const char *mode, int fd, int imode, | |
2631 | int perm, PerlIO *f, int narg, SV **args) | |
2632 | { | |
d9dac8cd | 2633 | if (PerlIOValid(f)) { |
cc6623a8 | 2634 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2635 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2636 | } |
2637 | if (narg > 0) { | |
3b6c1aba | 2638 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2639 | mode++; |
2640 | else { | |
2641 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2642 | #ifdef VMS |
2643 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2644 | #else | |
14a5cf38 | 2645 | perm = 0666; |
5e2ce0f3 | 2646 | #endif |
14a5cf38 JH |
2647 | } |
2648 | if (imode != -1) { | |
41188aa0 TC |
2649 | STRLEN len; |
2650 | const char *path = SvPV_const(*args, len); | |
2651 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2652 | return NULL; |
14a5cf38 JH |
2653 | fd = PerlLIO_open3(path, imode, perm); |
2654 | } | |
2655 | } | |
2656 | if (fd >= 0) { | |
3b6c1aba | 2657 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2658 | mode++; |
2659 | if (!f) { | |
2660 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2661 | } |
2662 | if (!PerlIOValid(f)) { | |
a33cf58c | 2663 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2664 | PerlLIO_close(fd); |
a33cf58c NIS |
2665 | return NULL; |
2666 | } | |
d9dac8cd | 2667 | } |
aa063c35 | 2668 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2669 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2670 | if (*mode == IoTYPE_APPEND) |
2671 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2672 | return f; |
2673 | } | |
2674 | else { | |
2675 | if (f) { | |
6f207bd3 | 2676 | NOOP; |
14a5cf38 | 2677 | /* |
71200d45 | 2678 | * FIXME: pop layers ??? |
14a5cf38 JH |
2679 | */ |
2680 | } | |
2681 | return NULL; | |
2682 | } | |
9e353e3b NIS |
2683 | } |
2684 | ||
71200d45 | 2685 | PerlIO * |
ecdeb87c | 2686 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2687 | { |
dcda55fc | 2688 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2689 | int fd = os->fd; |
ecdeb87c NIS |
2690 | if (flags & PERLIO_DUP_FD) { |
2691 | fd = PerlLIO_dup(fd); | |
2692 | } | |
22c96fc1 | 2693 | if (fd >= 0) { |
ecdeb87c | 2694 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2695 | if (f) { |
2696 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2697 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2698 | return f; |
2699 | } | |
0a20f69b | 2700 | PerlLIO_close(fd); |
71200d45 NIS |
2701 | } |
2702 | return NULL; | |
2703 | } | |
2704 | ||
2705 | ||
9e353e3b | 2706 | SSize_t |
f62ce20a | 2707 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2708 | { |
97aff369 | 2709 | dVAR; |
abf9167d DM |
2710 | int fd; |
2711 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2712 | return -1; | |
2713 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2714 | #ifdef PERLIO_STD_SPECIAL |
2715 | if (fd == 0) | |
2716 | return PERLIO_STD_IN(fd, vbuf, count); | |
2717 | #endif | |
81428673 | 2718 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2719 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2720 | return 0; |
1fd8f4ce | 2721 | } |
14a5cf38 | 2722 | while (1) { |
b464bac0 | 2723 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2724 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2725 | if (len < 0) { |
2726 | if (errno != EAGAIN) { | |
2727 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2728 | } | |
2729 | } | |
2730 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2731 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2732 | SETERRNO(0,0); |
2733 | } | |
14a5cf38 JH |
2734 | return len; |
2735 | } | |
abf9167d DM |
2736 | /* EINTR */ |
2737 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2738 | return -1; | |
14a5cf38 | 2739 | } |
b464bac0 | 2740 | /*NOTREACHED*/ |
9e353e3b NIS |
2741 | } |
2742 | ||
2743 | SSize_t | |
f62ce20a | 2744 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2745 | { |
97aff369 | 2746 | dVAR; |
abf9167d DM |
2747 | int fd; |
2748 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2749 | return -1; | |
2750 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2751 | #ifdef PERLIO_STD_SPECIAL |
2752 | if (fd == 1 || fd == 2) | |
2753 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2754 | #endif | |
14a5cf38 | 2755 | while (1) { |
de009b76 | 2756 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2757 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2758 | if (len < 0) { |
2759 | if (errno != EAGAIN) { | |
2760 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2761 | } | |
2762 | } | |
14a5cf38 JH |
2763 | return len; |
2764 | } | |
abf9167d DM |
2765 | /* EINTR */ |
2766 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2767 | return -1; | |
06da4f11 | 2768 | } |
1b6737cc | 2769 | /*NOTREACHED*/ |
9e353e3b NIS |
2770 | } |
2771 | ||
9e353e3b | 2772 | Off_t |
f62ce20a | 2773 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2774 | { |
96a5add6 AL |
2775 | PERL_UNUSED_CONTEXT; |
2776 | ||
14a5cf38 | 2777 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2778 | } |
2779 | ||
2556f95e GF |
2780 | |
2781 | IV | |
2376d97d | 2782 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2783 | { |
97aff369 | 2784 | dVAR; |
de009b76 | 2785 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2786 | int code = 0; |
168d5872 NIS |
2787 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2788 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2789 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2790 | return 0; | |
22569500 | 2791 | } |
93a8090d NIS |
2792 | } |
2793 | else { | |
93189314 | 2794 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2795 | return -1; |
2796 | } | |
14a5cf38 JH |
2797 | while (PerlLIO_close(fd) != 0) { |
2798 | if (errno != EINTR) { | |
2799 | code = -1; | |
2800 | break; | |
2801 | } | |
abf9167d DM |
2802 | /* EINTR */ |
2803 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2804 | return -1; | |
14a5cf38 JH |
2805 | } |
2806 | if (code == 0) { | |
2807 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2808 | } | |
2809 | return code; | |
9e353e3b NIS |
2810 | } |
2811 | ||
27da23d5 | 2812 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2813 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2814 | "unix", |
2815 | sizeof(PerlIOUnix), | |
2816 | PERLIO_K_RAW, | |
2817 | PerlIOUnix_pushed, | |
2376d97d | 2818 | PerlIOBase_popped, |
14a5cf38 | 2819 | PerlIOUnix_open, |
86e05cf2 | 2820 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2821 | NULL, |
2822 | PerlIOUnix_fileno, | |
71200d45 | 2823 | PerlIOUnix_dup, |
14a5cf38 JH |
2824 | PerlIOUnix_read, |
2825 | PerlIOBase_unread, | |
2826 | PerlIOUnix_write, | |
2827 | PerlIOUnix_seek, | |
2828 | PerlIOUnix_tell, | |
2829 | PerlIOUnix_close, | |
22569500 NIS |
2830 | PerlIOBase_noop_ok, /* flush */ |
2831 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2832 | PerlIOBase_eof, |
2833 | PerlIOBase_error, | |
2834 | PerlIOBase_clearerr, | |
2835 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2836 | NULL, /* get_base */ |
2837 | NULL, /* get_bufsiz */ | |
2838 | NULL, /* get_ptr */ | |
2839 | NULL, /* get_cnt */ | |
2840 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2841 | }; |
2842 | ||
2843 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2844 | /* |
71200d45 | 2845 | * stdio as a layer |
14a5cf38 | 2846 | */ |
9e353e3b | 2847 | |
313e59c8 NIS |
2848 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2849 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2850 | broken by the last second glibc 2.3 fix | |
2851 | */ | |
2852 | #define STDIO_BUFFER_WRITABLE | |
2853 | #endif | |
2854 | ||
2855 | ||
14a5cf38 JH |
2856 | typedef struct { |
2857 | struct _PerlIO base; | |
22569500 | 2858 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2859 | } PerlIOStdio; |
2860 | ||
2861 | IV | |
f62ce20a | 2862 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2863 | { |
96a5add6 AL |
2864 | PERL_UNUSED_CONTEXT; |
2865 | ||
c4420975 AL |
2866 | if (PerlIOValid(f)) { |
2867 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2868 | if (s) | |
2869 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2870 | } |
2871 | errno = EBADF; | |
2872 | return -1; | |
9e353e3b NIS |
2873 | } |
2874 | ||
766a733e | 2875 | char * |
14a5cf38 JH |
2876 | PerlIOStdio_mode(const char *mode, char *tmode) |
2877 | { | |
de009b76 | 2878 | char * const ret = tmode; |
a0625d38 SR |
2879 | if (mode) { |
2880 | while (*mode) { | |
2881 | *tmode++ = *mode++; | |
2882 | } | |
14a5cf38 | 2883 | } |
95005ad8 | 2884 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2885 | *tmode++ = 'b'; |
2886 | #endif | |
14a5cf38 JH |
2887 | *tmode = '\0'; |
2888 | return ret; | |
2889 | } | |
2890 | ||
4b803d04 | 2891 | IV |
2dc2558e | 2892 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2893 | { |
1fd8f4ce NIS |
2894 | PerlIO *n; |
2895 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2896 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2897 | if (toptab == tab) { |
2898 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2899 | PerlIO_pop(aTHX_ f); | |
2900 | return 0; | |
2901 | } else { | |
de009b76 | 2902 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2903 | char tmode[8]; |
2904 | FILE *stdio; | |
81428673 | 2905 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2906 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2907 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2908 | /* We never call down so do any pending stuff now */ | |
2909 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2910 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2911 | } |
1fd8f4ce NIS |
2912 | else { |
2913 | return -1; | |
2914 | } | |
2915 | } | |
14a5cf38 | 2916 | } |
2dc2558e | 2917 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2918 | } |
2919 | ||
22569500 | 2920 | |
9e353e3b | 2921 | PerlIO * |
4b069b44 | 2922 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2923 | { |
14a5cf38 JH |
2924 | dTHX; |
2925 | PerlIO *f = NULL; | |
2926 | if (stdio) { | |
22569500 | 2927 | PerlIOStdio *s; |
375ed12a JH |
2928 | int fd0 = fileno(stdio); |
2929 | if (fd0 < 0) { | |
2930 | return NULL; | |
2931 | } | |
4b069b44 NIS |
2932 | if (!mode || !*mode) { |
2933 | /* We need to probe to see how we can open the stream | |
2934 | so start with read/write and then try write and read | |
2935 | we dup() so that we can fclose without loosing the fd. | |
2936 | ||
2937 | Note that the errno value set by a failing fdopen | |
2938 | varies between stdio implementations. | |
2939 | */ | |
375ed12a JH |
2940 | const int fd = PerlLIO_dup(fd0); |
2941 | FILE *f2; | |
2942 | if (fd < 0) { | |
2943 | return f; | |
2944 | } | |
2945 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2946 | if (!f2) { |
a33cf58c | 2947 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2948 | } |
2949 | if (!f2) { | |
a33cf58c | 2950 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2951 | } |
2952 | if (!f2) { | |
2953 | /* Don't seem to be able to open */ | |
2954 | PerlLIO_close(fd); | |
2955 | return f; | |
2956 | } | |
2957 | fclose(f2); | |
22569500 | 2958 | } |
de092133 | 2959 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2960 | s = PerlIOSelf(f, PerlIOStdio); |
2961 | s->stdio = stdio; | |
c586124f | 2962 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2963 | } |
14a5cf38 JH |
2964 | } |
2965 | return f; | |
9e353e3b NIS |
2966 | } |
2967 | ||
2968 | PerlIO * | |
14a5cf38 JH |
2969 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2970 | IV n, const char *mode, int fd, int imode, | |
2971 | int perm, PerlIO *f, int narg, SV **args) | |
2972 | { | |
2973 | char tmode[8]; | |
d9dac8cd | 2974 | if (PerlIOValid(f)) { |
41188aa0 TC |
2975 | STRLEN len; |
2976 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 2977 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 2978 | FILE *stdio; |
41188aa0 | 2979 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 2980 | return NULL; |
1751d015 | 2981 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
2982 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
2983 | s->stdio); | |
14a5cf38 JH |
2984 | if (!s->stdio) |
2985 | return NULL; | |
2986 | s->stdio = stdio; | |
1751d015 | 2987 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2988 | return f; |
2989 | } | |
2990 | else { | |
2991 | if (narg > 0) { | |
41188aa0 TC |
2992 | STRLEN len; |
2993 | const char * const path = SvPV_const(*args, len); | |
2994 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2995 | return NULL; |
3b6c1aba | 2996 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2997 | mode++; |
2998 | fd = PerlLIO_open3(path, imode, perm); | |
2999 | } | |
3000 | else { | |
95005ad8 GH |
3001 | FILE *stdio; |
3002 | bool appended = FALSE; | |
3003 | #ifdef __CYGWIN__ | |
3004 | /* Cygwin wants its 'b' early. */ | |
3005 | appended = TRUE; | |
3006 | mode = PerlIOStdio_mode(mode, tmode); | |
3007 | #endif | |
3008 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3009 | if (stdio) { |
6f0313ac JH |
3010 | if (!f) { |
3011 | f = PerlIO_allocate(aTHX); | |
3012 | } | |
95005ad8 GH |
3013 | if (!appended) |
3014 | mode = PerlIOStdio_mode(mode, tmode); | |
3015 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3016 | if (f) { | |
0f0f9e2b JH |
3017 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3018 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3019 | } else { | |
3020 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3021 | } |
3022 | return f; | |
3023 | } | |
3024 | else { | |
3025 | return NULL; | |
3026 | } | |
14a5cf38 JH |
3027 | } |
3028 | } | |
3029 | if (fd >= 0) { | |
3030 | FILE *stdio = NULL; | |
3031 | int init = 0; | |
3b6c1aba | 3032 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3033 | init = 1; |
3034 | mode++; | |
3035 | } | |
3036 | if (init) { | |
3037 | switch (fd) { | |
3038 | case 0: | |
3039 | stdio = PerlSIO_stdin; | |
3040 | break; | |
3041 | case 1: | |
3042 | stdio = PerlSIO_stdout; | |
3043 | break; | |
3044 | case 2: | |
3045 | stdio = PerlSIO_stderr; | |
3046 | break; | |
3047 | } | |
3048 | } | |
3049 | else { | |
3050 | stdio = PerlSIO_fdopen(fd, mode = | |
3051 | PerlIOStdio_mode(mode, tmode)); | |
3052 | } | |
3053 | if (stdio) { | |
d9dac8cd NIS |
3054 | if (!f) { |
3055 | f = PerlIO_allocate(aTHX); | |
3056 | } | |
a33cf58c | 3057 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3058 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3059 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3060 | } |
14a5cf38 JH |
3061 | return f; |
3062 | } | |
0a20f69b | 3063 | PerlLIO_close(fd); |
14a5cf38 JH |
3064 | } |
3065 | } | |
ee518936 | 3066 | return NULL; |
9e353e3b NIS |
3067 | } |
3068 | ||
1751d015 | 3069 | PerlIO * |
ecdeb87c | 3070 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3071 | { |
3072 | /* This assumes no layers underneath - which is what | |
3073 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3074 | */ | |
ecdeb87c | 3075 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3076 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3077 | const int fd = fileno(stdio); |
9217ff3f | 3078 | char mode[8]; |
ecdeb87c | 3079 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3080 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3081 | if (dfd >= 0) { |
3082 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3083 | goto set_this; | |
ecdeb87c NIS |
3084 | } |
3085 | else { | |
6f207bd3 | 3086 | NOOP; |
ecdeb87c NIS |
3087 | /* FIXME: To avoid messy error recovery if dup fails |
3088 | re-use the existing stdio as though flag was not set | |
3089 | */ | |
3090 | } | |
3091 | } | |
9217ff3f NIS |
3092 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3093 | set_this: | |
694c95cf | 3094 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3095 | if(stdio) { |
3096 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3097 | } | |
1751d015 NIS |
3098 | } |
3099 | return f; | |
3100 | } | |
3101 | ||
0d7a5398 NIS |
3102 | static int |
3103 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3104 | { | |
96a5add6 AL |
3105 | PERL_UNUSED_CONTEXT; |
3106 | ||
0d7a5398 | 3107 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3108 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3109 | */ |
ef8eacb8 AT |
3110 | # if defined(__UCLIBC__) |
3111 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3112 | f->__filedes = -1; | |
3113 | return 1; | |
3114 | # elif defined(__GLIBC__) | |
0d7a5398 | 3115 | /* There may be a better way for GLIBC: |
37725cdc | 3116 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3117 | */ |
3118 | f->_fileno = -1; | |
3119 | return 1; | |
bdea967c | 3120 | # elif defined(__sun) |
f5992bc4 | 3121 | PERL_UNUSED_ARG(f); |
cfedb851 | 3122 | return 0; |
0d7a5398 NIS |
3123 | # elif defined(__hpux) |
3124 | f->__fileH = 0xff; | |
3125 | f->__fileL = 0xff; | |
3126 | return 1; | |
9837d373 | 3127 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3128 | your platform does not have special entry try this one. |
9837d373 NIS |
3129 | [For OSF only have confirmation for Tru64 (alpha) |
3130 | but assume other OSFs will be similar.] | |
37725cdc | 3131 | */ |
9837d373 | 3132 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3133 | f->_file = -1; |
3134 | return 1; | |
3135 | # elif defined(__FreeBSD__) | |
3136 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3137 | - we could insert a dummy func in the _close function entry |
3138 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3139 | */ |
3140 | f->_file = -1; | |
0c49ea6a SU |
3141 | return 1; |
3142 | # elif defined(__OpenBSD__) | |
3143 | /* There may be a better way on OpenBSD: | |
3144 | - we could insert a dummy func in the _close function entry | |
3145 | f->_close = (int (*)(void *)) dummy_close; | |
3146 | */ | |
3147 | f->_file = -1; | |
0d7a5398 | 3148 | return 1; |
59ad941d IZ |
3149 | # elif defined(__EMX__) |
3150 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3151 | f->_handle = -1; | |
3152 | return 1; | |
0d7a5398 NIS |
3153 | # elif defined(__CYGWIN__) |
3154 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3155 | - we could insert a dummy func in the _close function entry |
3156 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3157 | */ |
3158 | f->_file = -1; | |
3159 | return 1; | |
3160 | # elif defined(WIN32) | |
378eeda7 | 3161 | # if defined(UNDER_CE) |
b475b3e6 JH |
3162 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3163 | structure at all | |
3164 | */ | |
0d7a5398 NIS |
3165 | # else |
3166 | f->_file = -1; | |
3167 | # endif | |
3168 | return 1; | |
3169 | # else | |
3170 | #if 0 | |
37725cdc | 3171 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3172 | (which isn't thread safe) instead |
37725cdc | 3173 | */ |
0d7a5398 NIS |
3174 | # error "Don't know how to set FILE.fileno on your platform" |
3175 | #endif | |
8772537c | 3176 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3177 | return 0; |
3178 | # endif | |
3179 | } | |
3180 | ||
1751d015 | 3181 | IV |
f62ce20a | 3182 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3183 | { |
c4420975 | 3184 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3185 | if (!stdio) { |
3186 | errno = EBADF; | |
3187 | return -1; | |
3188 | } | |
9217ff3f | 3189 | else { |
de009b76 | 3190 | const int fd = fileno(stdio); |
0d7a5398 | 3191 | int invalidate = 0; |
bbfd922f | 3192 | IV result = 0; |
1d791a44 | 3193 | int dupfd = -1; |
4ee39169 | 3194 | dSAVEDERRNO; |
a2e578da MHM |
3195 | #ifdef USE_ITHREADS |
3196 | dVAR; | |
3197 | #endif | |
0d7a5398 | 3198 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3199 | /* Socks lib overrides close() but stdio isn't linked to |
3200 | that library (though we are) - so we must call close() | |
3201 | on sockets on stdio's behalf. | |
3202 | */ | |
0d7a5398 NIS |
3203 | int optval; |
3204 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3205 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3206 | invalidate = 1; |
0d7a5398 | 3207 | #endif |
d8723f43 NC |
3208 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3209 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3210 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3211 | trying to close an already closed handle which somehow it still has | |
3212 | a reference to. (via.xs, I'm looking at you). */ | |
3213 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3214 | /* File descriptor still in use */ | |
0d7a5398 | 3215 | invalidate = 1; |
d8723f43 | 3216 | } |
0d7a5398 | 3217 | if (invalidate) { |
6b4ce6c8 AL |
3218 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3219 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3220 | return 0; | |
3221 | if (stdio == stdout || stdio == stderr) | |
3222 | return PerlIO_flush(f); | |
37725cdc NIS |
3223 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3224 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3225 | fileno slot of the FILE * | |
3226 | */ | |
bbfd922f | 3227 | result = PerlIO_flush(f); |
4ee39169 | 3228 | SAVE_ERRNO; |
6b4ce6c8 | 3229 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3230 | if (!invalidate) { |
9bab90c0 NC |
3231 | #ifdef USE_ITHREADS |
3232 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3233 | /* Right. We need a mutex here because for a brief while we |
3234 | will have the situation that fd is actually closed. Hence if | |
3235 | a second thread were to get into this block, its dup() would | |
3236 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3237 | Then if we get to the dup2() first, we blat the fd back |
3238 | (messing up its temporary as a side effect) only for it to | |
3239 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3240 | ||
3241 | /* There is, of course, a race condition, that any other thread | |
3242 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3243 | for the duration of this little manoeuvrer. Perhaps we |
3244 | should hold an IO mutex for the duration of every IO | |
3245 | operation if we know that invalidate doesn't work on this | |
3246 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3247 | |
3248 | Except that correctness trumps speed. | |
3249 | Advice from klortho #11912. */ | |
3250 | #endif | |
6b4ce6c8 | 3251 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3252 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3253 | if (dupfd < 0) { |
3254 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3255 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3256 | recover from here, or if closing this particular FILE * | |
3257 | is a good idea now. */ | |
3258 | } | |
3259 | #endif | |
3260 | } | |
94ccb807 JH |
3261 | } else { |
3262 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3263 | } |
0d7a5398 | 3264 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3265 | /* We treat error from stdio as success if we invalidated |
3266 | errno may NOT be expected EBADF | |
e8529473 NIS |
3267 | */ |
3268 | if (invalidate && result != 0) { | |
4ee39169 | 3269 | RESTORE_ERRNO; |
0d7a5398 | 3270 | result = 0; |
37725cdc | 3271 | } |
6b4ce6c8 AL |
3272 | #ifdef SOCKS5_VERSION_NAME |
3273 | /* in SOCKS' case, let close() determine return value */ | |
3274 | result = close(fd); | |
3275 | #endif | |
1d791a44 | 3276 | if (dupfd >= 0) { |
0d7a5398 | 3277 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3278 | PerlLIO_close(dupfd); |
711e8db2 | 3279 | #ifdef USE_ITHREADS |
9bab90c0 | 3280 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3281 | #endif |
9217ff3f NIS |
3282 | } |
3283 | return result; | |
37725cdc | 3284 | } |
1751d015 NIS |
3285 | } |
3286 | ||
9e353e3b | 3287 | SSize_t |
f62ce20a | 3288 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3289 | { |
97aff369 | 3290 | dVAR; |
abf9167d | 3291 | FILE * s; |
14a5cf38 | 3292 | SSize_t got = 0; |
abf9167d DM |
3293 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3294 | return -1; | |
3295 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3296 | for (;;) { |
3297 | if (count == 1) { | |
3298 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3299 | /* | |
3300 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3301 | * stdio does not do that for fread() | |
3302 | */ | |
de009b76 | 3303 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3304 | if (ch != EOF) { |
3305 | *buf = ch; | |
3306 | got = 1; | |
3307 | } | |
14a5cf38 | 3308 | } |
4d948241 NIS |
3309 | else |
3310 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3311 | if (got == 0 && PerlSIO_ferror(s)) |
3312 | got = -1; | |
42a7a32f | 3313 | if (got >= 0 || errno != EINTR) |
4d948241 | 3314 | break; |
abf9167d DM |
3315 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3316 | return -1; | |
42a7a32f | 3317 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3318 | } |
14a5cf38 | 3319 | return got; |
9e353e3b NIS |
3320 | } |
3321 | ||
3322 | SSize_t | |
f62ce20a | 3323 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3324 | { |
14a5cf38 | 3325 | SSize_t unread = 0; |
c4420975 | 3326 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3327 | |
313e59c8 | 3328 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3329 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3330 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3331 | STDCHAR *base = PerlIO_get_base(f); | |
3332 | SSize_t cnt = PerlIO_get_cnt(f); | |
3333 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3334 | SSize_t avail = ptr - base; | |
3335 | if (avail > 0) { | |
3336 | if (avail > count) { | |
3337 | avail = count; | |
3338 | } | |
3339 | ptr -= avail; | |
3340 | Move(buf-avail,ptr,avail,STDCHAR); | |
3341 | count -= avail; | |
3342 | unread += avail; | |
3343 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3344 | if (PerlSIO_feof(s) && unread >= 0) |
3345 | PerlSIO_clearerr(s); | |
3346 | } | |
3347 | } | |
313e59c8 NIS |
3348 | else |
3349 | #endif | |
3350 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3351 | /* We can get pointer to buffer but not its base |
3352 | Do ungetc() but check chars are ending up in the | |
3353 | buffer | |
3354 | */ | |
3355 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3356 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3357 | while (count > 0) { | |
de009b76 | 3358 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3359 | if (ungetc(ch,s) != ch) { |
3360 | /* ungetc did not work */ | |
3361 | break; | |
3362 | } | |
3363 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3364 | /* Did not change pointer as expected */ | |
375ed12a JH |
3365 | if (fgetc(s) != EOF) /* get char back again */ |
3366 | break; | |
9f7cd136 NIS |
3367 | } |
3368 | /* It worked ! */ | |
3369 | count--; | |
3370 | unread++; | |
93679785 NIS |
3371 | } |
3372 | } | |
3373 | ||
3374 | if (count > 0) { | |
3375 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3376 | } |
3377 | return unread; | |
9e353e3b NIS |
3378 | } |
3379 | ||
3380 | SSize_t | |
f62ce20a | 3381 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3382 | { |
97aff369 | 3383 | dVAR; |
4d948241 | 3384 | SSize_t got; |
abf9167d DM |
3385 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3386 | return -1; | |
4d948241 NIS |
3387 | for (;;) { |
3388 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3389 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3390 | if (got >= 0 || errno != EINTR) |
4d948241 | 3391 | break; |
abf9167d DM |
3392 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3393 | return -1; | |
42a7a32f | 3394 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3395 | } |
3396 | return got; | |
9e353e3b NIS |
3397 | } |
3398 | ||
94a175e1 | 3399 | IV |
f62ce20a | 3400 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3401 | { |
c4420975 | 3402 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3403 | PERL_UNUSED_CONTEXT; |
3404 | ||
94a175e1 | 3405 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3406 | } |
3407 | ||
3408 | Off_t | |
f62ce20a | 3409 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3410 | { |
c4420975 | 3411 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3412 | PERL_UNUSED_CONTEXT; |
3413 | ||
94a175e1 | 3414 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3415 | } |
3416 | ||
3417 | IV | |
f62ce20a | 3418 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3419 | { |
c4420975 | 3420 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3421 | PERL_UNUSED_CONTEXT; |
3422 | ||
14a5cf38 JH |
3423 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3424 | return PerlSIO_fflush(stdio); | |
3425 | } | |
3426 | else { | |
6f207bd3 | 3427 | NOOP; |
88b61e10 | 3428 | #if 0 |
14a5cf38 JH |
3429 | /* |
3430 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3431 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3432 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3433 | * layer read-to-read |
14a5cf38 JH |
3434 | */ |
3435 | /* | |
71200d45 | 3436 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3437 | */ |
4ee39169 | 3438 | dSAVE_ERRNO; |
14a5cf38 | 3439 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3440 | RESTORE_ERRNO; |
88b61e10 | 3441 | #endif |
14a5cf38 JH |
3442 | } |
3443 | return 0; | |
9e353e3b NIS |
3444 | } |
3445 | ||
3446 | IV | |
f62ce20a | 3447 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3448 | { |
96a5add6 AL |
3449 | PERL_UNUSED_CONTEXT; |
3450 | ||
14a5cf38 | 3451 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3452 | } |
3453 | ||
3454 | IV | |
f62ce20a | 3455 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3456 | { |
96a5add6 AL |
3457 | PERL_UNUSED_CONTEXT; |
3458 | ||
263df5f1 | 3459 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3460 | } |
3461 | ||
3462 | void | |
f62ce20a | 3463 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3464 | { |
96a5add6 AL |
3465 | PERL_UNUSED_CONTEXT; |
3466 | ||
14a5cf38 | 3467 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3468 | } |
3469 | ||
3470 | void | |
f62ce20a | 3471 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3472 | { |
96a5add6 AL |
3473 | PERL_UNUSED_CONTEXT; |
3474 | ||
9e353e3b | 3475 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3476 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3477 | #else |
bd61b366 | 3478 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3479 | #endif |
3480 | } | |
3481 | ||
3482 | #ifdef FILE_base | |
3483 | STDCHAR * | |
f62ce20a | 3484 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3485 | { |
c4420975 | 3486 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3487 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3488 | } |
3489 | ||
3490 | Size_t | |
f62ce20a | 3491 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3492 | { |
c4420975 | 3493 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3494 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3495 | } |
3496 | #endif | |
3497 | ||
3498 | #ifdef USE_STDIO_PTR | |
3499 | STDCHAR * | |
f62ce20a | 3500 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3501 | { |
c4420975 | 3502 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3503 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3504 | } |
3505 | ||
3506 | SSize_t | |
f62ce20a | 3507 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3508 | { |
c4420975 | 3509 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3510 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3511 | } |
3512 | ||
3513 | void | |
f62ce20a | 3514 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3515 | { |
c4420975 | 3516 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3517 | if (ptr != NULL) { |
9e353e3b | 3518 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3519 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3520 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3521 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3522 | #endif |
3523 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3524 | /* |
71200d45 | 3525 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3526 | */ |
3527 | return; | |
9e353e3b | 3528 | #endif |
22569500 | 3529 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3530 | PerlProc_abort(); |
22569500 | 3531 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3532 | } |
3533 | /* | |
71200d45 | 3534 | * Now (or only) set cnt |
14a5cf38 | 3535 | */ |
9e353e3b | 3536 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3537 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3538 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3539 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3540 | PerlSIO_set_ptr(stdio, |
3541 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3542 | cnt)); | |
22569500 | 3543 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3544 | PerlProc_abort(); |
22569500 NIS |
3545 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3546 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3547 | } |
3548 | ||
93679785 | 3549 | |
9e353e3b NIS |
3550 | #endif |
3551 | ||
93679785 NIS |
3552 | IV |
3553 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3554 | { | |
abf9167d | 3555 | FILE * stdio; |
93679785 | 3556 | int c; |
96a5add6 | 3557 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3558 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3559 | return -1; | |
3560 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3561 | |
93679785 NIS |
3562 | /* |
3563 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3564 | */ | |
3565 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3566 | if (PerlSIO_fflush(stdio) != 0) | |
3567 | return EOF; | |
3568 | } | |
f3be3723 BL |
3569 | for (;;) { |
3570 | c = PerlSIO_fgetc(stdio); | |
3571 | if (c != EOF) | |
3572 | break; | |
3573 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3574 | return EOF; | |
abf9167d DM |
3575 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3576 | return -1; | |
f3be3723 BL |
3577 | SETERRNO(0,0); |
3578 | } | |
93679785 NIS |
3579 | |
3580 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3581 | |
3582 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3583 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3584 | /* Fake ungetc() to the real buffer in case system's ungetc |
3585 | goes elsewhere | |
3586 | */ | |
3587 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3588 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3589 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3590 | if (ptr == base+1) { | |
3591 | *--ptr = (STDCHAR) c; | |
3592 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3593 | if (PerlSIO_feof(stdio)) | |
3594 | PerlSIO_clearerr(stdio); | |
3595 | return 0; | |
3596 | } | |
3597 | } | |
313e59c8 NIS |
3598 | else |
3599 | #endif | |
3600 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3601 | STDCHAR ch = c; |
3602 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3603 | return 0; | |
3604 | } | |
3605 | } | |
93679785 NIS |
3606 | #endif |
3607 | ||
3608 | #if defined(VMS) | |
3609 | /* An ungetc()d char is handled separately from the regular | |
3610 | * buffer, so we stuff it in the buffer ourselves. | |
3611 | * Should never get called as should hit code above | |
3612 | */ | |
bad9695d NIS |
3613 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3614 | (*stdio)->_cnt++; | |
93679785 NIS |
3615 | #else |
3616 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3617 | using ungetc(). |
93679785 NIS |
3618 | */ |
3619 | if (PerlSIO_ungetc(c, stdio) != c) | |
3620 | return EOF; | |
3621 | #endif | |
3622 | return 0; | |
3623 | } | |
3624 | ||
3625 | ||
3626 | ||
27da23d5 | 3627 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3628 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3629 | "stdio", |
3630 | sizeof(PerlIOStdio), | |
86e05cf2 | 3631 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3632 | PerlIOStdio_pushed, |
2376d97d | 3633 | PerlIOBase_popped, |
14a5cf38 | 3634 | PerlIOStdio_open, |
86e05cf2 | 3635 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3636 | NULL, |
3637 | PerlIOStdio_fileno, | |
71200d45 | 3638 | PerlIOStdio_dup, |
14a5cf38 JH |
3639 | PerlIOStdio_read, |
3640 | PerlIOStdio_unread, | |
3641 | PerlIOStdio_write, | |
3642 | PerlIOStdio_seek, | |
3643 | PerlIOStdio_tell, | |
3644 | PerlIOStdio_close, | |
3645 | PerlIOStdio_flush, | |
3646 | PerlIOStdio_fill, | |
3647 | PerlIOStdio_eof, | |
3648 | PerlIOStdio_error, | |
3649 | PerlIOStdio_clearerr, | |
3650 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3651 | #ifdef FILE_base |
14a5cf38 JH |
3652 | PerlIOStdio_get_base, |
3653 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3654 | #else |
14a5cf38 JH |
3655 | NULL, |
3656 | NULL, | |
9e353e3b NIS |
3657 | #endif |
3658 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3659 | PerlIOStdio_get_ptr, |
3660 | PerlIOStdio_get_cnt, | |
15b61c98 | 3661 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3662 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3663 | # else |
3664 | NULL, | |
3665 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3666 | #else | |
3667 | NULL, | |
14a5cf38 JH |
3668 | NULL, |
3669 | NULL, | |
15b61c98 | 3670 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3671 | }; |
3672 | ||
b9d6bf13 JH |
3673 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3674 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3675 | FILE * |
81428673 | 3676 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3677 | { |
e87a358a | 3678 | dTHX; |
81428673 NIS |
3679 | FILE *stdio = NULL; |
3680 | if (PerlIOValid(f)) { | |
3681 | char buf[8]; | |
375ed12a JH |
3682 | int fd = PerlIO_fileno(f); |
3683 | if (fd < 0) { | |
3684 | return NULL; | |
3685 | } | |
81428673 NIS |
3686 | PerlIO_flush(f); |
3687 | if (!mode || !*mode) { | |
3688 | mode = PerlIO_modestr(f, buf); | |
3689 | } | |
3690 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3691 | if (stdio) { | |
3692 | PerlIOl *l = *f; | |
9f75cc58 | 3693 | PerlIO *f2; |
81428673 NIS |
3694 | /* De-link any lower layers so new :stdio sticks */ |
3695 | *f = NULL; | |
a0714e2c | 3696 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3697 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3698 | s->stdio = stdio; |
6b54a403 | 3699 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3700 | /* Link previous lower layers under new one */ |
3701 | *PerlIONext(f) = l; | |
3702 | } | |
3703 | else { | |
3704 | /* restore layers list */ | |
3705 | *f = l; | |
3706 | } | |
a33cf58c | 3707 | } |
14a5cf38 JH |
3708 | } |
3709 | return stdio; | |
9e353e3b NIS |
3710 | } |
3711 | ||
81428673 | 3712 | |
9e353e3b NIS |
3713 | FILE * |
3714 | PerlIO_findFILE(PerlIO *f) | |
3715 | { | |
14a5cf38 | 3716 | PerlIOl *l = *f; |
bbbc33d0 | 3717 | FILE *stdio; |
14a5cf38 JH |
3718 | while (l) { |
3719 | if (l->tab == &PerlIO_stdio) { | |
3720 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3721 | return s->stdio; | |
3722 | } | |
3723 | l = *PerlIONext(&l); | |
f7e7eb72 | 3724 | } |
4b069b44 | 3725 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3726 | /* However, we're not really exporting a FILE * to someone else (who |
3727 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3728 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3729 | descriptor. We have to do this, because if the loop above returns you |
3730 | the FILE *, then *it* didn't increase any reference count. So there's | |
3731 | only one way to be consistent. */ | |
3732 | stdio = PerlIO_exportFILE(f, NULL); | |
3733 | if (stdio) { | |
3734 | const int fd = fileno(stdio); | |
3735 | if (fd >= 0) | |
3736 | PerlIOUnix_refcnt_dec(fd); | |
3737 | } | |
3738 | return stdio; | |
9e353e3b NIS |
3739 | } |
3740 | ||
b9d6bf13 | 3741 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3742 | void |
3743 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3744 | { | |
27da23d5 | 3745 | dVAR; |
22569500 NIS |
3746 | PerlIOl *l; |
3747 | while ((l = *p)) { | |
3748 | if (l->tab == &PerlIO_stdio) { | |
3749 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3750 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3751 | const int fd = fileno(f); |
3752 | if (fd >= 0) | |
3753 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3754 | { |
3755 | dTHX; | |
3756 | PerlIO_pop(aTHX_ p); | |
3757 | } | |
22569500 NIS |
3758 | return; |
3759 | } | |
3760 | } | |
3761 | p = PerlIONext(p); | |
3762 | } | |
3763 | return; | |
9e353e3b NIS |
3764 | } |
3765 | ||
3766 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3767 | /* |
71200d45 | 3768 | * perlio buffer layer |
14a5cf38 | 3769 | */ |
9e353e3b | 3770 | |
5e2ab84b | 3771 | IV |
2dc2558e | 3772 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3773 | { |
14a5cf38 | 3774 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3775 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3776 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3777 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3778 | } | |
4b069b44 | 3779 | if (*PerlIONext(f)) { |
de009b76 | 3780 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3781 | if (posn != (Off_t) - 1) { |
3782 | b->posn = posn; | |
3783 | } | |
14a5cf38 | 3784 | } |
2dc2558e | 3785 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3786 | } |
3787 | ||
9e353e3b | 3788 | PerlIO * |
14a5cf38 JH |
3789 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3790 | IV n, const char *mode, int fd, int imode, int perm, | |
3791 | PerlIO *f, int narg, SV **args) | |
3792 | { | |
04892f78 | 3793 | if (PerlIOValid(f)) { |
14a5cf38 | 3794 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3795 | PerlIO_funcs *tab = |
3796 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3797 | if (tab && tab->Open) | |
3798 | next = | |
3799 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3800 | next, narg, args); | |
2dc2558e | 3801 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3802 | return NULL; |
3803 | } | |
3804 | } | |
3805 | else { | |
04892f78 | 3806 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3807 | int init = 0; |
3b6c1aba | 3808 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3809 | init = 1; |
3810 | /* | |
71200d45 | 3811 | * mode++; |
14a5cf38 JH |
3812 | */ |
3813 | } | |
67363c0d JH |
3814 | if (tab && tab->Open) |
3815 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3816 | f, narg, args); | |
3817 | else | |
3818 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3819 | if (f) { |
22569500 | 3820 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3821 | /* |
3822 | * if push fails during open, open fails. close will pop us. | |
3823 | */ | |
3824 | PerlIO_close (f); | |
3825 | return NULL; | |
3826 | } else { | |
3827 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3828 | if (init && fd == 2) { |
3829 | /* | |
3830 | * Initial stderr is unbuffered | |
3831 | */ | |
3832 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3833 | } | |
23b84778 IZ |
3834 | #ifdef PERLIO_USING_CRLF |
3835 | # ifdef PERLIO_IS_BINMODE_FD | |
3836 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3837 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3838 | else |
3839 | # endif | |
3840 | /* | |
3841 | * do something about failing setmode()? --jhi | |
3842 | */ | |
3843 | PerlLIO_setmode(fd, O_BINARY); | |
3844 | #endif | |
8c8488cd | 3845 | #ifdef VMS |
8c8488cd CB |
3846 | /* Enable line buffering with record-oriented regular files |
3847 | * so we don't introduce an extraneous record boundary when | |
3848 | * the buffer fills up. | |
3849 | */ | |
3850 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3851 | Stat_t st; | |
3852 | if (PerlLIO_fstat(fd, &st) == 0 | |
3853 | && S_ISREG(st.st_mode) | |
3854 | && (st.st_fab_rfm == FAB$C_VAR | |
3855 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3856 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3857 | } | |
3858 | } | |
3859 | #endif | |
14a5cf38 JH |
3860 | } |
3861 | } | |
ee518936 | 3862 | } |
14a5cf38 | 3863 | return f; |
9e353e3b NIS |
3864 | } |
3865 | ||
14a5cf38 JH |
3866 | /* |
3867 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3868 | * read or write state. For write state, we put the postponed data through |
3869 | * the next layers. For read state, we seek() the next layers to the | |
3870 | * offset given by current position in the buffer, and discard the buffer | |
3871 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3872 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3873 | */ |
9e353e3b | 3874 | IV |
f62ce20a | 3875 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3876 | { |
dcda55fc | 3877 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3878 | int code = 0; |
04892f78 | 3879 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3880 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3881 | /* | |
71200d45 | 3882 | * write() the buffer |
14a5cf38 | 3883 | */ |
de009b76 AL |
3884 | const STDCHAR *buf = b->buf; |
3885 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3886 | while (p < b->ptr) { |
3887 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3888 | if (count > 0) { | |
3889 | p += count; | |
3890 | } | |
3891 | else if (count < 0 || PerlIO_error(n)) { | |
3892 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3893 | code = -1; | |
3894 | break; | |
3895 | } | |
3896 | } | |
3897 | b->posn += (p - buf); | |
3898 | } | |
3899 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3900 | STDCHAR *buf = PerlIO_get_base(f); | |
3901 | /* | |
71200d45 | 3902 | * Note position change |
14a5cf38 JH |
3903 | */ |
3904 | b->posn += (b->ptr - buf); | |
3905 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3906 | /* We did not consume all of it - try and seek downstream to |
3907 | our logical position | |
14a5cf38 | 3908 | */ |
4b069b44 | 3909 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3910 | /* Reload n as some layers may pop themselves on seek */ |
3911 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3912 | } |
ba5c3fe9 | 3913 | else { |
4b069b44 NIS |
3914 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3915 | data is lost for good - so return saying "ok" having undone | |
3916 | the position adjust | |
3917 | */ | |
3918 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3919 | return code; |
3920 | } | |
14a5cf38 JH |
3921 | } |
3922 | } | |
3923 | b->ptr = b->end = b->buf; | |
3924 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3925 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3926 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3927 | code = -1; |
3928 | return code; | |
6f9d8c32 NIS |
3929 | } |
3930 | ||
93c2c2ec IZ |
3931 | /* This discards the content of the buffer after b->ptr, and rereads |
3932 | * the buffer from the position off in the layer downstream; here off | |
3933 | * is at offset corresponding to b->ptr - b->buf. | |
3934 | */ | |
06da4f11 | 3935 | IV |
f62ce20a | 3936 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3937 | { |
dcda55fc | 3938 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3939 | PerlIO *n = PerlIONext(f); |
3940 | SSize_t avail; | |
3941 | /* | |
4b069b44 NIS |
3942 | * Down-stream flush is defined not to loose read data so is harmless. |
3943 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3944 | */ |
93c2c2ec | 3945 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3946 | return -1; |
3947 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3948 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3949 | |
3950 | if (!b->buf) | |
22569500 | 3951 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3952 | |
0f0eef27 | 3953 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3954 | |
14a5cf38 | 3955 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3956 | |
3957 | if (!PerlIOValid(n)) { | |
3958 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3959 | return -1; | |
3960 | } | |
3961 | ||
14a5cf38 JH |
3962 | if (PerlIO_fast_gets(n)) { |
3963 | /* | |
04892f78 | 3964 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3965 | * ->Read() because that will loop till it gets what we asked for |
3966 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3967 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3968 | */ |
3969 | avail = PerlIO_get_cnt(n); | |
3970 | if (avail <= 0) { | |
3971 | avail = PerlIO_fill(n); | |
3972 | if (avail == 0) | |
3973 | avail = PerlIO_get_cnt(n); | |
3974 | else { | |
3975 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3976 | avail = 0; | |
3977 | } | |
3978 | } | |
3979 | if (avail > 0) { | |
3980 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3981 | const SSize_t cnt = avail; |
eb160463 | 3982 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3983 | avail = b->bufsiz; |
3984 | Copy(ptr, b->buf, avail, STDCHAR); | |
3985 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3986 | } | |
3987 | } | |
3988 | else { | |
3989 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3990 | } | |
3991 | if (avail <= 0) { | |
3992 | if (avail == 0) | |
3993 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3994 | else | |
3995 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3996 | return -1; | |
3997 | } | |
3998 | b->end = b->buf + avail; | |
3999 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4000 | return 0; | |
06da4f11 NIS |
4001 | } |
4002 | ||
6f9d8c32 | 4003 | SSize_t |
f62ce20a | 4004 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4005 | { |
04892f78 | 4006 | if (PerlIOValid(f)) { |
dcda55fc | 4007 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4008 | if (!b->ptr) |
4009 | PerlIO_get_base(f); | |
f62ce20a | 4010 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4011 | } |
4012 | return 0; | |
6f9d8c32 NIS |
4013 | } |
4014 | ||
9e353e3b | 4015 | SSize_t |
f62ce20a | 4016 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4017 | { |
14a5cf38 | 4018 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4019 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4020 | SSize_t unread = 0; |
4021 | SSize_t avail; | |
4022 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4023 | PerlIO_flush(f); | |
4024 | if (!b->buf) | |
4025 | PerlIO_get_base(f); | |
4026 | if (b->buf) { | |
4027 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4028 | /* | |
4029 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4030 | * which have been read back to buffer start |
14a5cf38 JH |
4031 | */ |
4032 | avail = (b->ptr - b->buf); | |
4033 | } | |
4034 | else { | |
4035 | /* | |
4036 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4037 | * unread |
14a5cf38 JH |
4038 | */ |
4039 | avail = b->bufsiz; | |
4040 | b->end = b->buf + avail; | |
4041 | b->ptr = b->end; | |
4042 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4043 | /* | |
71200d45 | 4044 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4045 | */ |
4046 | b->posn -= b->bufsiz; | |
4047 | } | |
94e529cc | 4048 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4049 | /* |
71200d45 | 4050 | * If we have space for more than count, just move count |
14a5cf38 JH |
4051 | */ |
4052 | avail = count; | |
4053 | } | |
4054 | if (avail > 0) { | |
4055 | b->ptr -= avail; | |
4056 | buf -= avail; | |
4057 | /* | |
4058 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4059 | * there |
14a5cf38 JH |
4060 | */ |
4061 | if (buf != b->ptr) { | |
4062 | Copy(buf, b->ptr, avail, STDCHAR); | |
4063 | } | |
4064 | count -= avail; | |
4065 | unread += avail; | |
4066 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4067 | } | |
4068 | } | |
93679785 NIS |
4069 | if (count > 0) { |
4070 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4071 | } | |
14a5cf38 | 4072 | return unread; |
760ac839 LW |
4073 | } |
4074 | ||
9e353e3b | 4075 | SSize_t |
f62ce20a | 4076 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4077 | { |
de009b76 | 4078 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4079 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4080 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4081 | Size_t written = 0; |
4082 | if (!b->buf) | |
4083 | PerlIO_get_base(f); | |
4084 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4085 | return 0; | |
0678cb22 NIS |
4086 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4087 | if (PerlIO_flush(f) != 0) { | |
4088 | return 0; | |
4089 | } | |
4090 | } | |
ee56a6b9 CS |
4091 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4092 | flushptr = buf + count; | |
4093 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4094 | --flushptr; | |
4095 | } | |
14a5cf38 JH |
4096 | while (count > 0) { |
4097 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4098 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4099 | avail = count; |
ee56a6b9 CS |
4100 | if (flushptr > buf && flushptr <= buf + avail) |
4101 | avail = flushptr - buf; | |
14a5cf38 | 4102 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4103 | if (avail) { |
4104 | Copy(buf, b->ptr, avail, STDCHAR); | |
4105 | count -= avail; | |
4106 | buf += avail; | |
4107 | written += avail; | |
4108 | b->ptr += avail; | |
4109 | if (buf == flushptr) | |
4110 | PerlIO_flush(f); | |
14a5cf38 JH |
4111 | } |
4112 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4113 | if (PerlIO_flush(f) == -1) |
4114 | return -1; | |
14a5cf38 JH |
4115 | } |
4116 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4117 | PerlIO_flush(f); | |
4118 | return written; | |
9e353e3b NIS |
4119 | } |
4120 | ||
94a175e1 | 4121 | IV |
f62ce20a | 4122 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4123 | { |
14a5cf38 JH |
4124 | IV code; |
4125 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4126 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4127 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4128 | if (code == 0) { | |
de009b76 | 4129 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4130 | b->posn = PerlIO_tell(PerlIONext(f)); |
4131 | } | |
9e353e3b | 4132 | } |
14a5cf38 | 4133 | return code; |
9e353e3b NIS |
4134 | } |
4135 | ||
4136 | Off_t | |
f62ce20a | 4137 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4138 | { |
dcda55fc | 4139 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4140 | /* |
71200d45 | 4141 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4142 | */ |
4143 | Off_t posn = b->posn; | |
37725cdc | 4144 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4145 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4146 | #if 1 | |
4147 | /* As O_APPEND files are normally shared in some sense it is better | |
4148 | to flush : | |
4149 | */ | |
4150 | PerlIO_flush(f); | |
4151 | #else | |
37725cdc | 4152 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4153 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4154 | #endif | |
4155 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4156 | } | |
14a5cf38 JH |
4157 | if (b->buf) { |
4158 | /* | |
71200d45 | 4159 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4160 | */ |
4161 | posn += (b->ptr - b->buf); | |
4162 | } | |
4163 | return posn; | |
9e353e3b NIS |
4164 | } |
4165 | ||
4166 | IV | |
44798d05 NIS |
4167 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4168 | { | |
de009b76 AL |
4169 | const IV code = PerlIOBase_popped(aTHX_ f); |
4170 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4171 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4172 | Safefree(b->buf); | |
4173 | } | |
dcda55fc | 4174 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4175 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4176 | return code; | |
4177 | } | |
4178 | ||
4179 | IV | |
f62ce20a | 4180 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4181 | { |
de009b76 AL |
4182 | const IV code = PerlIOBase_close(aTHX_ f); |
4183 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4184 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4185 | Safefree(b->buf); |
14a5cf38 | 4186 | } |
dcda55fc | 4187 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4188 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4189 | return code; | |
760ac839 LW |
4190 | } |
4191 | ||
9e353e3b | 4192 | STDCHAR * |
f62ce20a | 4193 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4194 | { |
dcda55fc | 4195 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4196 | if (!b->buf) |
4197 | PerlIO_get_base(f); | |
4198 | return b->ptr; | |
9e353e3b NIS |
4199 | } |
4200 | ||
05d1247b | 4201 | SSize_t |
f62ce20a | 4202 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4203 | { |
dcda55fc | 4204 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4205 | if (!b->buf) |
4206 | PerlIO_get_base(f); | |
4207 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4208 | return (b->end - b->ptr); | |
4209 | return 0; | |
9e353e3b NIS |
4210 | } |
4211 | ||
4212 | STDCHAR * | |
f62ce20a | 4213 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4214 | { |
dcda55fc | 4215 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4216 | PERL_UNUSED_CONTEXT; |
4217 | ||
14a5cf38 JH |
4218 | if (!b->buf) { |
4219 | if (!b->bufsiz) | |
1810cd7c | 4220 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4221 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4222 | if (!b->buf) { |
4223 | b->buf = (STDCHAR *) & b->oneword; | |
4224 | b->bufsiz = sizeof(b->oneword); | |
4225 | } | |
dcda55fc | 4226 | b->end = b->ptr = b->buf; |
06da4f11 | 4227 | } |
14a5cf38 | 4228 | return b->buf; |
9e353e3b NIS |
4229 | } |
4230 | ||
4231 | Size_t | |
f62ce20a | 4232 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4233 | { |
dcda55fc | 4234 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4235 | if (!b->buf) |
4236 | PerlIO_get_base(f); | |
4237 | return (b->end - b->buf); | |
9e353e3b NIS |
4238 | } |
4239 | ||
4240 | void | |
f62ce20a | 4241 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4242 | { |
dcda55fc | 4243 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4244 | #ifndef DEBUGGING |
4245 | PERL_UNUSED_ARG(cnt); | |
4246 | #endif | |
14a5cf38 JH |
4247 | if (!b->buf) |
4248 | PerlIO_get_base(f); | |
4249 | b->ptr = ptr; | |
b727803b RGS |
4250 | assert(PerlIO_get_cnt(f) == cnt); |
4251 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4252 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4253 | } |
4254 | ||
71200d45 | 4255 | PerlIO * |
ecdeb87c | 4256 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4257 | { |
ecdeb87c | 4258 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4259 | } |
4260 | ||
4261 | ||
4262 | ||
27da23d5 | 4263 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4264 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4265 | "perlio", |
4266 | sizeof(PerlIOBuf), | |
86e05cf2 | 4267 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4268 | PerlIOBuf_pushed, |
44798d05 | 4269 | PerlIOBuf_popped, |
14a5cf38 | 4270 | PerlIOBuf_open, |
86e05cf2 | 4271 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4272 | NULL, |
4273 | PerlIOBase_fileno, | |
71200d45 | 4274 | PerlIOBuf_dup, |
14a5cf38 JH |
4275 | PerlIOBuf_read, |
4276 | PerlIOBuf_unread, | |
4277 | PerlIOBuf_write, | |
4278 | PerlIOBuf_seek, | |
4279 | PerlIOBuf_tell, | |
4280 | PerlIOBuf_close, | |
4281 | PerlIOBuf_flush, | |
4282 | PerlIOBuf_fill, | |
4283 | PerlIOBase_eof, | |
4284 | PerlIOBase_error, | |
4285 | PerlIOBase_clearerr, | |
4286 | PerlIOBase_setlinebuf, | |
4287 | PerlIOBuf_get_base, | |
4288 | PerlIOBuf_bufsiz, | |
4289 | PerlIOBuf_get_ptr, | |
4290 | PerlIOBuf_get_cnt, | |
4291 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4292 | }; |
4293 | ||
66ecd56b | 4294 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4295 | /* |
71200d45 | 4296 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4297 | */ |
5e2ab84b NIS |
4298 | |
4299 | IV | |
f62ce20a | 4300 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4301 | { |
14a5cf38 | 4302 | /* |
71200d45 | 4303 | * Should never happen |
14a5cf38 JH |
4304 | */ |
4305 | PerlIO_flush(f); | |
4306 | return 0; | |
5e2ab84b NIS |
4307 | } |
4308 | ||
4309 | IV | |
f62ce20a | 4310 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4311 | { |
14a5cf38 | 4312 | /* |
71200d45 | 4313 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4314 | */ |
4315 | PerlIO_flush(f); | |
4316 | return PerlIO_close(f); | |
5e2ab84b NIS |
4317 | } |
4318 | ||
94a175e1 | 4319 | IV |
f62ce20a | 4320 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4321 | { |
14a5cf38 | 4322 | /* |
71200d45 | 4323 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4324 | */ |
4325 | PerlIO_flush(f); | |
4326 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4327 | } |
4328 | ||
4329 | ||
4330 | IV | |
f62ce20a | 4331 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4332 | { |
dcda55fc | 4333 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4334 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4335 | Safefree(b->buf); |
14a5cf38 JH |
4336 | b->buf = NULL; |
4337 | } | |
4338 | PerlIO_pop(aTHX_ f); | |
4339 | return 0; | |
5e2ab84b NIS |
4340 | } |
4341 | ||
4342 | void | |
f62ce20a | 4343 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4344 | { |
14a5cf38 JH |
4345 | if (cnt <= 0) { |
4346 | PerlIO_flush(f); | |
4347 | } | |
4348 | else { | |
f62ce20a | 4349 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4350 | } |
5e2ab84b NIS |
4351 | } |
4352 | ||
4353 | IV | |
2dc2558e | 4354 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4355 | { |
de009b76 | 4356 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4357 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4358 | /* |
71200d45 NIS |
4359 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4360 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4361 | */ |
4362 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4363 | (PerlIOBase(PerlIONext(f))-> | |
4364 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4365 | return code; | |
5e2ab84b NIS |
4366 | } |
4367 | ||
4368 | SSize_t | |
f62ce20a | 4369 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4370 | { |
14a5cf38 JH |
4371 | SSize_t avail = PerlIO_get_cnt(f); |
4372 | SSize_t got = 0; | |
94e529cc | 4373 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4374 | avail = count; |
4375 | if (avail > 0) | |
f62ce20a | 4376 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4377 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4378 | const SSize_t more = |
14a5cf38 JH |
4379 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4380 | if (more >= 0 || got == 0) | |
4381 | got += more; | |
4382 | } | |
4383 | return got; | |
5e2ab84b NIS |
4384 | } |
4385 | ||
27da23d5 | 4386 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4387 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4388 | "pending", |
4389 | sizeof(PerlIOBuf), | |
86e05cf2 | 4390 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4391 | PerlIOPending_pushed, |
44798d05 | 4392 | PerlIOBuf_popped, |
14a5cf38 | 4393 | NULL, |
86e05cf2 | 4394 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4395 | NULL, |
4396 | PerlIOBase_fileno, | |
71200d45 | 4397 | PerlIOBuf_dup, |
14a5cf38 JH |
4398 | PerlIOPending_read, |
4399 | PerlIOBuf_unread, | |
4400 | PerlIOBuf_write, | |
4401 | PerlIOPending_seek, | |
4402 | PerlIOBuf_tell, | |
4403 | PerlIOPending_close, | |
4404 | PerlIOPending_flush, | |
4405 | PerlIOPending_fill, | |
4406 | PerlIOBase_eof, | |
4407 | PerlIOBase_error, | |
4408 | PerlIOBase_clearerr, | |
4409 | PerlIOBase_setlinebuf, | |
4410 | PerlIOBuf_get_base, | |
4411 | PerlIOBuf_bufsiz, | |
4412 | PerlIOBuf_get_ptr, | |
4413 | PerlIOBuf_get_cnt, | |
4414 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4415 | }; |
4416 | ||
4417 | ||
4418 | ||
4419 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4420 | /* |
4421 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4422 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4423 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4424 | * |
4425 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4426 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4427 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4428 | * that it ends at c->nl; these two cases can be distinguished by | |
4429 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4430 | * _unread() and _flush() calls. | |
4431 | * It only matters for read operations. | |
66ecd56b NIS |
4432 | */ |
4433 | ||
14a5cf38 | 4434 | typedef struct { |
22569500 NIS |
4435 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4436 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4437 | * buffer */ |
99efab12 NIS |
4438 | } PerlIOCrlf; |
4439 | ||
ff1e3883 JD |
4440 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4441 | * Otherwise the :crlf layer would always revert back to | |
4442 | * raw mode. | |
4443 | */ | |
4444 | static void | |
4445 | S_inherit_utf8_flag(PerlIO *f) | |
4446 | { | |
4447 | PerlIO *g = PerlIONext(f); | |
4448 | if (PerlIOValid(g)) { | |
4449 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4450 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4451 | } | |
4452 | } | |
4453 | } | |
4454 | ||
f5b9d040 | 4455 | IV |
2dc2558e | 4456 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4457 | { |
14a5cf38 JH |
4458 | IV code; |
4459 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4460 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4461 | #if 0 |
14a5cf38 | 4462 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4463 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4464 | PerlIOBase(f)->flags); |
5e2ab84b | 4465 | #endif |
8229d19f | 4466 | { |
5da08ab0 LT |
4467 | /* If the old top layer is a CRLF layer, reactivate it (if |
4468 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4469 | PerlIO *g = PerlIONext(f); |
7826b36f | 4470 | if (PerlIOValid(g)) { |
8229d19f JH |
4471 | PerlIOl *b = PerlIOBase(g); |
4472 | if (b && b->tab == &PerlIO_crlf) { | |
4473 | if (!(b->flags & PERLIO_F_CRLF)) | |
4474 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4475 | S_inherit_utf8_flag(g); |
8229d19f JH |
4476 | PerlIO_pop(aTHX_ f); |
4477 | return code; | |
7826b36f | 4478 | } |
8229d19f JH |
4479 | } |
4480 | } | |
ff1e3883 | 4481 | S_inherit_utf8_flag(f); |
14a5cf38 | 4482 | return code; |
f5b9d040 NIS |
4483 | } |
4484 | ||
4485 | ||
99efab12 | 4486 | SSize_t |
f62ce20a | 4487 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4488 | { |
dcda55fc | 4489 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4490 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4491 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4492 | c->nl = NULL; |
4493 | } | |
4494 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4495 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4496 | else { |
4497 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4498 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4499 | SSize_t unread = 0; | |
4500 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4501 | PerlIO_flush(f); | |
4502 | if (!b->buf) | |
4503 | PerlIO_get_base(f); | |
4504 | if (b->buf) { | |
4505 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4506 | b->end = b->ptr = b->buf + b->bufsiz; | |
4507 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4508 | b->posn -= b->bufsiz; | |
4509 | } | |
4510 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4511 | const int ch = *--buf; |
14a5cf38 JH |
4512 | if (ch == '\n') { |
4513 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4514 | *--(b->ptr) = NATIVE_0xa; |
4515 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4516 | unread++; |
4517 | count--; | |
4518 | } | |
4519 | else { | |
93c2c2ec | 4520 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4521 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4522 | '\r' */ | |
93c2c2ec IZ |
4523 | unread++; |
4524 | count--; | |
14a5cf38 JH |
4525 | } |
4526 | } | |
4527 | else { | |
4528 | *--(b->ptr) = ch; | |
4529 | unread++; | |
4530 | count--; | |
4531 | } | |
4532 | } | |
4533 | } | |
ec1da995 LT |
4534 | if (count > 0) |
4535 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4536 | return unread; |
4537 | } | |
99efab12 NIS |
4538 | } |
4539 | ||
93c2c2ec | 4540 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4541 | SSize_t |
f62ce20a | 4542 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4543 | { |
dcda55fc | 4544 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4545 | if (!b->buf) |
4546 | PerlIO_get_base(f); | |
4547 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4548 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4549 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4550 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4551 | scan: |
76e6dc3a | 4552 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4553 | nl++; |
76e6dc3a | 4554 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4555 | test: |
4556 | if (nl + 1 < b->end) { | |
76e6dc3a | 4557 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4558 | *nl = '\n'; |
4559 | c->nl = nl; | |
4560 | } | |
4561 | else { | |
4562 | /* | |
71200d45 | 4563 | * Not CR,LF but just CR |
14a5cf38 JH |
4564 | */ |
4565 | nl++; | |
4566 | goto scan; | |
4567 | } | |
4568 | } | |
4569 | else { | |
4570 | /* | |
71200d45 | 4571 | * Blast - found CR as last char in buffer |
14a5cf38 | 4572 | */ |
e87a358a | 4573 | |
14a5cf38 JH |
4574 | if (b->ptr < nl) { |
4575 | /* | |
4576 | * They may not care, defer work as long as | |
71200d45 | 4577 | * possible |
14a5cf38 | 4578 | */ |
a0d1d361 | 4579 | c->nl = nl; |
14a5cf38 JH |
4580 | return (nl - b->ptr); |
4581 | } | |
4582 | else { | |
4583 | int code; | |
22569500 | 4584 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4585 | * flush() is concerned */ |
22569500 | 4586 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4587 | /* Note as we have moved buf up flush's |
4588 | posn += ptr-buf | |
4589 | will naturally make posn point at CR | |
4590 | */ | |
22569500 NIS |
4591 | b->bufsiz--; /* Buffer is thus smaller */ |
4592 | code = PerlIO_fill(f); /* Fetch some more */ | |
4593 | b->bufsiz++; /* Restore size for next time */ | |
4594 | b->buf--; /* Point at space */ | |
4595 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4596 | * off */ |
76e6dc3a | 4597 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4598 | if (code == 0) |
22569500 | 4599 | goto test; /* fill() call worked */ |
14a5cf38 | 4600 | /* |
71200d45 | 4601 | * CR at EOF - just fall through |
14a5cf38 | 4602 | */ |
a0d1d361 | 4603 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4604 | } |
4605 | } | |
4606 | } | |
4607 | } | |
4608 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4609 | } | |
4610 | return 0; | |
99efab12 NIS |
4611 | } |
4612 | ||
4613 | void | |
f62ce20a | 4614 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4615 | { |
dcda55fc AL |
4616 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4617 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4618 | if (!b->buf) |
4619 | PerlIO_get_base(f); | |
4620 | if (!ptr) { | |
a0d1d361 | 4621 | if (c->nl) { |
14a5cf38 | 4622 | ptr = c->nl + 1; |
76e6dc3a | 4623 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4624 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4625 | ptr--; |
4626 | } | |
4627 | } | |
14a5cf38 JH |
4628 | else { |
4629 | ptr = b->end; | |
14a5cf38 JH |
4630 | } |
4631 | ptr -= cnt; | |
4632 | } | |
4633 | else { | |
6f207bd3 | 4634 | NOOP; |
3b4bd3fd | 4635 | #if 0 |
14a5cf38 | 4636 | /* |
71200d45 | 4637 | * Test code - delete when it works ... |
14a5cf38 | 4638 | */ |
3b4bd3fd | 4639 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4640 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4641 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4642 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4643 | chk--; |
22569500 | 4644 | } |
14a5cf38 JH |
4645 | chk -= cnt; |
4646 | ||
a0d1d361 | 4647 | if (ptr != chk ) { |
99ef548b | 4648 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4649 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4650 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4651 | } |
99ef548b | 4652 | #endif |
14a5cf38 JH |
4653 | } |
4654 | if (c->nl) { | |
4655 | if (ptr > c->nl) { | |
4656 | /* | |
71200d45 | 4657 | * They have taken what we lied about |
14a5cf38 | 4658 | */ |
76e6dc3a | 4659 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4660 | c->nl = NULL; |
4661 | ptr++; | |
4662 | } | |
4663 | } | |
4664 | b->ptr = ptr; | |
4665 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4666 | } |
4667 | ||
4668 | SSize_t | |
f62ce20a | 4669 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4670 | { |
14a5cf38 | 4671 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4672 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4673 | else { |
dcda55fc | 4674 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4675 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4676 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4677 | if (!b->buf) |
4678 | PerlIO_get_base(f); | |
4679 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4680 | return 0; | |
4681 | while (buf < ebuf) { | |
dcda55fc | 4682 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4683 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4684 | while (buf < ebuf && b->ptr < eptr) { | |
4685 | if (*buf == '\n') { | |
4686 | if ((b->ptr + 2) > eptr) { | |
4687 | /* | |
71200d45 | 4688 | * Not room for both |
14a5cf38 JH |
4689 | */ |
4690 | PerlIO_flush(f); | |
4691 | break; | |
4692 | } | |
4693 | else { | |
76e6dc3a KW |
4694 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4695 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4696 | buf++; |
4697 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4698 | PerlIO_flush(f); | |
4699 | break; | |
4700 | } | |
4701 | } | |
4702 | } | |
4703 | else { | |
dcda55fc | 4704 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4705 | } |
4706 | if (b->ptr >= eptr) { | |
4707 | PerlIO_flush(f); | |
4708 | break; | |
4709 | } | |
4710 | } | |
4711 | } | |
4712 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4713 | PerlIO_flush(f); | |
4714 | return (buf - (STDCHAR *) vbuf); | |
4715 | } | |
99efab12 NIS |
4716 | } |
4717 | ||
4718 | IV | |
f62ce20a | 4719 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4720 | { |
dcda55fc | 4721 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4722 | if (c->nl) { |
76e6dc3a | 4723 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4724 | c->nl = NULL; |
4725 | } | |
f62ce20a | 4726 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4727 | } |
4728 | ||
86e05cf2 NIS |
4729 | IV |
4730 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4731 | { | |
4732 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4733 | /* In text mode - flush any pending stuff and flip it */ | |
4734 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4735 | #ifndef PERLIO_USING_CRLF | |
4736 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4737 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4738 | #endif |
4739 | } | |
4740 | return 0; | |
4741 | } | |
4742 | ||
27da23d5 | 4743 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4744 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4745 | "crlf", |
4746 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4747 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4748 | PerlIOCrlf_pushed, |
44798d05 | 4749 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4750 | PerlIOBuf_open, |
86e05cf2 | 4751 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4752 | NULL, |
4753 | PerlIOBase_fileno, | |
71200d45 | 4754 | PerlIOBuf_dup, |
de009b76 | 4755 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4756 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4757 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4758 | PerlIOBuf_seek, |
4759 | PerlIOBuf_tell, | |
4760 | PerlIOBuf_close, | |
4761 | PerlIOCrlf_flush, | |
4762 | PerlIOBuf_fill, | |
4763 | PerlIOBase_eof, | |
4764 | PerlIOBase_error, | |
4765 | PerlIOBase_clearerr, | |
4766 | PerlIOBase_setlinebuf, | |
4767 | PerlIOBuf_get_base, | |
4768 | PerlIOBuf_bufsiz, | |
4769 | PerlIOBuf_get_ptr, | |
4770 | PerlIOCrlf_get_cnt, | |
4771 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4772 | }; |
4773 | ||
9e353e3b | 4774 | PerlIO * |
e87a358a | 4775 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4776 | { |
97aff369 | 4777 | dVAR; |
a1ea730d | 4778 | if (!PL_perlio) { |
14a5cf38 JH |
4779 | PerlIO_stdstreams(aTHX); |
4780 | } | |
303f2dc3 | 4781 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4782 | } |
4783 | ||
9e353e3b | 4784 | PerlIO * |
e87a358a | 4785 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4786 | { |
97aff369 | 4787 | dVAR; |
a1ea730d | 4788 | if (!PL_perlio) { |
14a5cf38 JH |
4789 | PerlIO_stdstreams(aTHX); |
4790 | } | |
303f2dc3 | 4791 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4792 | } |
4793 | ||
9e353e3b | 4794 | PerlIO * |
e87a358a | 4795 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4796 | { |
97aff369 | 4797 | dVAR; |
a1ea730d | 4798 | if (!PL_perlio) { |
14a5cf38 JH |
4799 | PerlIO_stdstreams(aTHX); |
4800 | } | |
303f2dc3 | 4801 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4802 | } |
4803 | ||
4804 | /*--------------------------------------------------------------------------------------*/ | |
4805 | ||
9e353e3b NIS |
4806 | char * |
4807 | PerlIO_getname(PerlIO *f, char *buf) | |
4808 | { | |
a15cef0c | 4809 | #ifdef VMS |
dbf7dff6 | 4810 | dTHX; |
73d840c0 | 4811 | char *name = NULL; |
7659f319 | 4812 | bool exported = FALSE; |
14a5cf38 | 4813 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4814 | if (!stdio) { |
4815 | stdio = PerlIO_exportFILE(f,0); | |
4816 | exported = TRUE; | |
4817 | } | |
4818 | if (stdio) { | |
14a5cf38 | 4819 | name = fgetname(stdio, buf); |
7659f319 CB |
4820 | if (exported) PerlIO_releaseFILE(f,stdio); |
4821 | } | |
73d840c0 | 4822 | return name; |
a15cef0c | 4823 | #else |
8772537c AL |
4824 | PERL_UNUSED_ARG(f); |
4825 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4826 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4827 | return NULL; |
a15cef0c | 4828 | #endif |
9e353e3b NIS |
4829 | } |
4830 | ||
4831 | ||
4832 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4833 | /* |
4834 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4835 | * terms of above |
14a5cf38 | 4836 | */ |
9e353e3b | 4837 | |
e87a358a NIS |
4838 | #undef PerlIO_fdopen |
4839 | PerlIO * | |
4840 | PerlIO_fdopen(int fd, const char *mode) | |
4841 | { | |
4842 | dTHX; | |
bd61b366 | 4843 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4844 | } |
4845 | ||
4846 | #undef PerlIO_open | |
4847 | PerlIO * | |
4848 | PerlIO_open(const char *path, const char *mode) | |
4849 | { | |
4850 | dTHX; | |
42d9b98d | 4851 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4852 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4853 | } |
4854 | ||
4855 | #undef Perlio_reopen | |
4856 | PerlIO * | |
4857 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4858 | { | |
4859 | dTHX; | |
42d9b98d | 4860 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4861 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4862 | } |
4863 | ||
9e353e3b | 4864 | #undef PerlIO_getc |
6f9d8c32 | 4865 | int |
9e353e3b | 4866 | PerlIO_getc(PerlIO *f) |
760ac839 | 4867 | { |
e87a358a | 4868 | dTHX; |
14a5cf38 | 4869 | STDCHAR buf[1]; |
de009b76 | 4870 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4871 | return (unsigned char) buf[0]; |
4872 | } | |
4873 | return EOF; | |
313ca112 NIS |
4874 | } |
4875 | ||
4876 | #undef PerlIO_ungetc | |
4877 | int | |
4878 | PerlIO_ungetc(PerlIO *f, int ch) | |
4879 | { | |
e87a358a | 4880 | dTHX; |
14a5cf38 JH |
4881 | if (ch != EOF) { |
4882 | STDCHAR buf = ch; | |
4883 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4884 | return ch; | |
4885 | } | |
4886 | return EOF; | |
760ac839 LW |
4887 | } |
4888 | ||
9e353e3b NIS |
4889 | #undef PerlIO_putc |
4890 | int | |
4891 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4892 | { |
e87a358a | 4893 | dTHX; |
14a5cf38 JH |
4894 | STDCHAR buf = ch; |
4895 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4896 | } |
4897 | ||
9e353e3b | 4898 | #undef PerlIO_puts |
760ac839 | 4899 | int |
9e353e3b | 4900 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4901 | { |
e87a358a | 4902 | dTHX; |
dcda55fc | 4903 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4904 | } |
4905 | ||
4906 | #undef PerlIO_rewind | |
4907 | void | |
c78749f2 | 4908 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4909 | { |
e87a358a | 4910 | dTHX; |
14a5cf38 JH |
4911 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4912 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4913 | } |
4914 | ||
4915 | #undef PerlIO_vprintf | |
4916 | int | |
4917 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4918 | { | |
14a5cf38 | 4919 | dTHX; |
53ce71d3 | 4920 | SV * sv; |
b83604b4 | 4921 | const char *s; |
14a5cf38 JH |
4922 | STRLEN len; |
4923 | SSize_t wrote; | |
2cc61e15 | 4924 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4925 | va_list apc; |
4926 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4927 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 4928 | va_end(apc); |
2cc61e15 | 4929 | #else |
53ce71d3 | 4930 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4931 | #endif |
b83604b4 | 4932 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4933 | wrote = PerlIO_write(f, s, len); |
4934 | SvREFCNT_dec(sv); | |
4935 | return wrote; | |
760ac839 LW |
4936 | } |
4937 | ||
4938 | #undef PerlIO_printf | |
6f9d8c32 | 4939 | int |
14a5cf38 | 4940 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4941 | { |
14a5cf38 JH |
4942 | va_list ap; |
4943 | int result; | |
4944 | va_start(ap, fmt); | |
4945 | result = PerlIO_vprintf(f, fmt, ap); | |
4946 | va_end(ap); | |
4947 | return result; | |
760ac839 LW |
4948 | } |
4949 | ||
4950 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4951 | int |
14a5cf38 | 4952 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4953 | { |
e87a358a | 4954 | dTHX; |
14a5cf38 JH |
4955 | va_list ap; |
4956 | int result; | |
4957 | va_start(ap, fmt); | |
4958 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
4959 | va_end(ap); | |
4960 | return result; | |
760ac839 LW |
4961 | } |
4962 | ||
4963 | #undef PerlIO_tmpfile | |
4964 | PerlIO * | |
c78749f2 | 4965 | PerlIO_tmpfile(void) |
760ac839 | 4966 | { |
dbf7dff6 | 4967 | #ifndef WIN32 |
2941a2e1 | 4968 | dTHX; |
dbf7dff6 | 4969 | #endif |
2941a2e1 | 4970 | PerlIO *f = NULL; |
2941a2e1 | 4971 | #ifdef WIN32 |
de009b76 | 4972 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
4973 | if (fd >= 0) |
4974 | f = PerlIO_fdopen(fd, "w+b"); | |
4975 | #else /* WIN32 */ | |
460c8493 | 4976 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
4977 | int fd = -1; |
4978 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 4979 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 4980 | SV * sv = NULL; |
60f7fc1e | 4981 | int old_umask = umask(0600); |
2941a2e1 JH |
4982 | /* |
4983 | * I have no idea how portable mkstemp() is ... NI-S | |
4984 | */ | |
7299ca58 | 4985 | if (tmpdir && *tmpdir) { |
0b99e986 | 4986 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 4987 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
4988 | sv_catpv(sv, tempname + 4); |
4989 | fd = mkstemp(SvPVX(sv)); | |
4990 | } | |
4991 | if (fd < 0) { | |
e40f8e80 | 4992 | SvREFCNT_dec(sv); |
7299ca58 | 4993 | sv = NULL; |
0b99e986 RGS |
4994 | /* else we try /tmp */ |
4995 | fd = mkstemp(tempname); | |
4996 | } | |
b7561fc9 BF |
4997 | if (fd < 0) { |
4998 | /* Try cwd */ | |
4999 | sv = newSVpvs("."); | |
5000 | sv_catpv(sv, tempname + 4); | |
5001 | fd = mkstemp(SvPVX(sv)); | |
5002 | } | |
60f7fc1e | 5003 | umask(old_umask); |
2941a2e1 JH |
5004 | if (fd >= 0) { |
5005 | f = PerlIO_fdopen(fd, "w+"); | |
5006 | if (f) | |
5007 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5008 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5009 | } |
ef8d46e8 | 5010 | SvREFCNT_dec(sv); |
2941a2e1 | 5011 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5012 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5013 | |
085e731f CB |
5014 | if (stdio) |
5015 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5016 | ||
2941a2e1 JH |
5017 | # endif /* else HAS_MKSTEMP */ |
5018 | #endif /* else WIN32 */ | |
5019 | return f; | |
760ac839 LW |
5020 | } |
5021 | ||
6f9d8c32 NIS |
5022 | #undef HAS_FSETPOS |
5023 | #undef HAS_FGETPOS | |
5024 | ||
22569500 | 5025 | #endif /* PERLIO_IS_STDIO */ |
760ac839 | 5026 | |
9e353e3b | 5027 | /*======================================================================================*/ |
14a5cf38 | 5028 | /* |
71200d45 NIS |
5029 | * Now some functions in terms of above which may be needed even if we are |
5030 | * not in true PerlIO mode | |
9e353e3b | 5031 | */ |
188f0c84 YO |
5032 | const char * |
5033 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5034 | { | |
5035 | dVAR; | |
8b850bd5 NC |
5036 | const char *direction = NULL; |
5037 | SV *layers; | |
188f0c84 YO |
5038 | /* |
5039 | * Need to supply default layer info from open.pm | |
5040 | */ | |
8b850bd5 NC |
5041 | |
5042 | if (!PL_curcop) | |
5043 | return NULL; | |
5044 | ||
5045 | if (mode && mode[0] != 'r') { | |
5046 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5047 | direction = "open>"; | |
5048 | } else { | |
5049 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5050 | direction = "open<"; | |
188f0c84 | 5051 | } |
8b850bd5 NC |
5052 | if (!direction) |
5053 | return NULL; | |
5054 | ||
20439bc7 | 5055 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5056 | |
5057 | assert(layers); | |
5058 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5059 | } |
5060 | ||
9e353e3b | 5061 | |
760ac839 LW |
5062 | #ifndef HAS_FSETPOS |
5063 | #undef PerlIO_setpos | |
5064 | int | |
766a733e | 5065 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5066 | { |
14a5cf38 JH |
5067 | if (SvOK(pos)) { |
5068 | STRLEN len; | |
2bcd6579 | 5069 | dTHX; |
c4420975 | 5070 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5071 | if (f && len == sizeof(Off_t)) |
5072 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5073 | } | |
93189314 | 5074 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5075 | return -1; |
760ac839 | 5076 | } |
c411622e | 5077 | #else |
c411622e | 5078 | #undef PerlIO_setpos |
5079 | int | |
766a733e | 5080 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5081 | { |
14a5cf38 JH |
5082 | dTHX; |
5083 | if (SvOK(pos)) { | |
5084 | STRLEN len; | |
c4420975 | 5085 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5086 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5087 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5088 | return fsetpos64(f, fpos); |
d9b3e12d | 5089 | #else |
14a5cf38 | 5090 | return fsetpos(f, fpos); |
d9b3e12d | 5091 | #endif |
14a5cf38 | 5092 | } |
766a733e | 5093 | } |
93189314 | 5094 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5095 | return -1; |
c411622e | 5096 | } |
5097 | #endif | |
760ac839 LW |
5098 | |
5099 | #ifndef HAS_FGETPOS | |
5100 | #undef PerlIO_getpos | |
5101 | int | |
766a733e | 5102 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5103 | { |
14a5cf38 JH |
5104 | dTHX; |
5105 | Off_t posn = PerlIO_tell(f); | |
5106 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5107 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5108 | } |
c411622e | 5109 | #else |
c411622e | 5110 | #undef PerlIO_getpos |
5111 | int | |
766a733e | 5112 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5113 | { |
14a5cf38 JH |
5114 | dTHX; |
5115 | Fpos_t fpos; | |
5116 | int code; | |
2d4389e4 | 5117 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5118 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5119 | #else |
14a5cf38 | 5120 | code = fgetpos(f, &fpos); |
d9b3e12d | 5121 | #endif |
14a5cf38 JH |
5122 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5123 | return code; | |
c411622e | 5124 | } |
5125 | #endif | |
760ac839 | 5126 | |
97cb92d6 | 5127 | #if !defined(HAS_VPRINTF) |
760ac839 LW |
5128 | |
5129 | int | |
c78749f2 | 5130 | vprintf(char *pat, char *args) |
662a7e3f CS |
5131 | { |
5132 | _doprnt(pat, args, stdout); | |
22569500 | 5133 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5134 | * value */ |
662a7e3f CS |
5135 | } |
5136 | ||
5137 | int | |
c78749f2 | 5138 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5139 | { |
5140 | _doprnt(pat, args, fd); | |
22569500 | 5141 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5142 | * value */ |
760ac839 LW |
5143 | } |
5144 | ||
5145 | #endif | |
5146 | ||
9cfa90c0 NC |
5147 | /* |
5148 | * Local variables: | |
5149 | * c-indentation-style: bsd | |
5150 | * c-basic-offset: 4 | |
14d04a33 | 5151 | * indent-tabs-mode: nil |
9cfa90c0 NC |
5152 | * End: |
5153 | * | |
14d04a33 | 5154 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5155 | */ |