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) { |
04783dc7 | 392 | int rc = 0; |
70ace5da | 393 | #ifdef USE_ITHREADS |
dcda55fc | 394 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
395 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
396 | char buffer[1024]; | |
1208b3dd JH |
397 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
398 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
04783dc7 | 399 | rc = PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); |
70ace5da | 400 | #else |
dcda55fc AL |
401 | const char *s = CopFILE(PL_curcop); |
402 | STRLEN len; | |
550e2ce0 NC |
403 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
404 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
405 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
406 | ||
b83604b4 | 407 | s = SvPV_const(sv, len); |
04783dc7 | 408 | rc = PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 409 | SvREFCNT_dec(sv); |
70ace5da | 410 | #endif |
04783dc7 DM |
411 | /* silently ignore failures */ |
412 | PERL_UNUSED_VAR(rc); | |
14a5cf38 JH |
413 | } |
414 | va_end(ap); | |
6f9d8c32 NIS |
415 | } |
416 | ||
9e353e3b NIS |
417 | /*--------------------------------------------------------------------------------------*/ |
418 | ||
14a5cf38 | 419 | /* |
71200d45 | 420 | * Inner level routines |
14a5cf38 | 421 | */ |
9e353e3b | 422 | |
16865ff7 DM |
423 | /* check that the head field of each layer points back to the head */ |
424 | ||
425 | #ifdef DEBUGGING | |
426 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
427 | static void | |
428 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
429 | { | |
430 | PerlIOl *head, *p; | |
431 | int seen = 0; | |
432 | if (!PerlIOValid(f)) | |
433 | return; | |
434 | p = head = PerlIOBase(f)->head; | |
435 | assert(p); | |
436 | do { | |
437 | assert(p->head == head); | |
438 | if (p == (PerlIOl*)f) | |
439 | seen = 1; | |
440 | p = p->next; | |
441 | } while (p); | |
442 | assert(seen); | |
443 | } | |
444 | #else | |
445 | # define VERIFY_HEAD(f) | |
446 | #endif | |
447 | ||
448 | ||
14a5cf38 | 449 | /* |
71200d45 | 450 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 451 | */ |
05d1247b | 452 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 453 | |
8995e67d DM |
454 | static void |
455 | PerlIO_init_table(pTHX) | |
456 | { | |
457 | if (PL_perlio) | |
458 | return; | |
459 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
460 | } | |
461 | ||
462 | ||
463 | ||
760ac839 | 464 | PerlIO * |
5f1a76d0 | 465 | PerlIO_allocate(pTHX) |
6f9d8c32 | 466 | { |
97aff369 | 467 | dVAR; |
14a5cf38 | 468 | /* |
71200d45 | 469 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 470 | */ |
303f2dc3 DM |
471 | PerlIOl **last; |
472 | PerlIOl *f; | |
a1ea730d | 473 | last = &PL_perlio; |
14a5cf38 JH |
474 | while ((f = *last)) { |
475 | int i; | |
303f2dc3 | 476 | last = (PerlIOl **) (f); |
14a5cf38 | 477 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 478 | if (!((++f)->next)) { |
abf9167d | 479 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 480 | f->tab = NULL; |
16865ff7 | 481 | f->head = f; |
303f2dc3 | 482 | return (PerlIO *)f; |
14a5cf38 JH |
483 | } |
484 | } | |
485 | } | |
303f2dc3 | 486 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
487 | if (!f) { |
488 | return NULL; | |
489 | } | |
303f2dc3 | 490 | *last = (PerlIOl*) f++; |
abf9167d | 491 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 492 | f->tab = NULL; |
16865ff7 | 493 | f->head = f; |
303f2dc3 | 494 | return (PerlIO*) f; |
05d1247b NIS |
495 | } |
496 | ||
a1ea730d NIS |
497 | #undef PerlIO_fdupopen |
498 | PerlIO * | |
ecdeb87c | 499 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 500 | { |
04892f78 | 501 | if (PerlIOValid(f)) { |
de009b76 | 502 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 503 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
504 | if (tab && tab->Dup) |
505 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
506 | else { |
507 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
508 | } | |
a1ea730d | 509 | } |
210e727c JH |
510 | else |
511 | SETERRNO(EBADF, SS_IVCHAN); | |
512 | ||
513 | return NULL; | |
a1ea730d NIS |
514 | } |
515 | ||
516 | void | |
303f2dc3 | 517 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 518 | { |
303f2dc3 | 519 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
520 | if (table) { |
521 | int i; | |
303f2dc3 | 522 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 523 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
524 | PerlIOl * const f = table + i; |
525 | if (f->next) { | |
526 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
527 | } |
528 | } | |
3a1ee7e8 | 529 | Safefree(table); |
14a5cf38 | 530 | *tablep = NULL; |
05d1247b | 531 | } |
05d1247b NIS |
532 | } |
533 | ||
fcf2db38 NIS |
534 | |
535 | PerlIO_list_t * | |
3a1ee7e8 | 536 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 537 | { |
14a5cf38 | 538 | PerlIO_list_t *list; |
96a5add6 | 539 | PERL_UNUSED_CONTEXT; |
a02a5408 | 540 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
541 | list->refcnt = 1; |
542 | return list; | |
fcf2db38 NIS |
543 | } |
544 | ||
545 | void | |
3a1ee7e8 | 546 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 547 | { |
14a5cf38 JH |
548 | if (list) { |
549 | if (--list->refcnt == 0) { | |
550 | if (list->array) { | |
14a5cf38 | 551 | IV i; |
ef8d46e8 VP |
552 | for (i = 0; i < list->cur; i++) |
553 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
554 | Safefree(list->array); |
555 | } | |
556 | Safefree(list); | |
557 | } | |
558 | } | |
fcf2db38 NIS |
559 | } |
560 | ||
561 | void | |
3a1ee7e8 | 562 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 563 | { |
97aff369 | 564 | dVAR; |
334e202e | 565 | PerlIO_pair_t *p; |
b37c2d43 AL |
566 | PERL_UNUSED_CONTEXT; |
567 | ||
14a5cf38 JH |
568 | if (list->cur >= list->len) { |
569 | list->len += 8; | |
570 | if (list->array) | |
571 | Renew(list->array, list->len, PerlIO_pair_t); | |
572 | else | |
a02a5408 | 573 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
574 | } |
575 | p = &(list->array[list->cur++]); | |
576 | p->funcs = funcs; | |
577 | if ((p->arg = arg)) { | |
f84c484e | 578 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 579 | } |
fcf2db38 NIS |
580 | } |
581 | ||
3a1ee7e8 NIS |
582 | PerlIO_list_t * |
583 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
584 | { | |
b37c2d43 | 585 | PerlIO_list_t *list = NULL; |
694c95cf JH |
586 | if (proto) { |
587 | int i; | |
588 | list = PerlIO_list_alloc(aTHX); | |
589 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 590 | SV *arg = proto->array[i].arg; |
24d147a6 | 591 | #ifdef USE_ITHREADS |
a951d81d BL |
592 | if (arg && param) |
593 | arg = sv_dup(arg, param); | |
594 | #else | |
595 | PERL_UNUSED_ARG(param); | |
596 | #endif | |
694c95cf JH |
597 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
598 | } | |
3a1ee7e8 NIS |
599 | } |
600 | return list; | |
601 | } | |
4a4a6116 | 602 | |
05d1247b | 603 | void |
3a1ee7e8 | 604 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 605 | { |
3aaf42a7 | 606 | #ifdef USE_ITHREADS |
303f2dc3 DM |
607 | PerlIOl **table = &proto->Iperlio; |
608 | PerlIOl *f; | |
3a1ee7e8 NIS |
609 | PL_perlio = NULL; |
610 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
611 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 612 | PerlIO_init_table(aTHX); |
a25429c6 | 613 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
614 | while ((f = *table)) { |
615 | int i; | |
303f2dc3 | 616 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 617 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
618 | if (f->next) { |
619 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
620 | } |
621 | f++; | |
622 | } | |
623 | } | |
1b6737cc | 624 | #else |
a25429c6 | 625 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
626 | PERL_UNUSED_ARG(proto); |
627 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 628 | #endif |
9a6404c5 DM |
629 | } |
630 | ||
631 | void | |
13621cfb NIS |
632 | PerlIO_destruct(pTHX) |
633 | { | |
97aff369 | 634 | dVAR; |
303f2dc3 DM |
635 | PerlIOl **table = &PL_perlio; |
636 | PerlIOl *f; | |
694c95cf | 637 | #ifdef USE_ITHREADS |
a25429c6 | 638 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 639 | #endif |
14a5cf38 JH |
640 | while ((f = *table)) { |
641 | int i; | |
303f2dc3 | 642 | table = (PerlIOl **) (f++); |
14a5cf38 | 643 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 644 | PerlIO *x = &(f->next); |
dcda55fc | 645 | const PerlIOl *l; |
14a5cf38 | 646 | while ((l = *x)) { |
cc6623a8 | 647 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
648 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
649 | PerlIO_flush(x); | |
650 | PerlIO_pop(aTHX_ x); | |
651 | } | |
652 | else { | |
653 | x = PerlIONext(x); | |
654 | } | |
655 | } | |
656 | f++; | |
657 | } | |
658 | } | |
13621cfb NIS |
659 | } |
660 | ||
661 | void | |
a999f61b | 662 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 663 | { |
dcda55fc | 664 | const PerlIOl *l = *f; |
16865ff7 | 665 | VERIFY_HEAD(f); |
14a5cf38 | 666 | if (l) { |
cc6623a8 DM |
667 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
668 | l->tab ? l->tab->name : "(Null)"); | |
669 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
670 | /* |
671 | * If popped returns non-zero do not free its layer structure | |
672 | * it has either done so itself, or it is shared and still in | |
71200d45 | 673 | * use |
14a5cf38 | 674 | */ |
f62ce20a | 675 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
676 | return; |
677 | } | |
abf9167d DM |
678 | if (PerlIO_lockcnt(f)) { |
679 | /* we're in use; defer freeing the structure */ | |
680 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
681 | PerlIOBase(f)->tab = NULL; | |
682 | } | |
683 | else { | |
684 | *f = l->next; | |
685 | Safefree(l); | |
686 | } | |
687 | ||
a8c08ecd | 688 | } |
6f9d8c32 NIS |
689 | } |
690 | ||
39f7a870 JH |
691 | /* Return as an array the stack of layers on a filehandle. Note that |
692 | * the stack is returned top-first in the array, and there are three | |
693 | * times as many array elements as there are layers in the stack: the | |
694 | * first element of a layer triplet is the name, the second one is the | |
695 | * arguments, and the third one is the flags. */ | |
696 | ||
697 | AV * | |
698 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
699 | { | |
97aff369 | 700 | dVAR; |
dcda55fc | 701 | AV * const av = newAV(); |
39f7a870 | 702 | |
dcda55fc AL |
703 | if (PerlIOValid(f)) { |
704 | PerlIOl *l = PerlIOBase(f); | |
705 | ||
706 | while (l) { | |
92e45a3e NC |
707 | /* There is some collusion in the implementation of |
708 | XS_PerlIO_get_layers - it knows that name and flags are | |
709 | generated as fresh SVs here, and takes advantage of that to | |
710 | "copy" them by taking a reference. If it changes here, it needs | |
711 | to change there too. */ | |
dcda55fc AL |
712 | SV * const name = l->tab && l->tab->name ? |
713 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
714 | SV * const arg = l->tab && l->tab->Getarg ? | |
715 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
716 | av_push(av, name); | |
717 | av_push(av, arg); | |
718 | av_push(av, newSViv((IV)l->flags)); | |
719 | l = l->next; | |
720 | } | |
721 | } | |
39f7a870 | 722 | |
dcda55fc | 723 | return av; |
39f7a870 JH |
724 | } |
725 | ||
9e353e3b | 726 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 727 | /* |
71200d45 | 728 | * XS Interface for perl code |
14a5cf38 | 729 | */ |
9e353e3b | 730 | |
fcf2db38 | 731 | PerlIO_funcs * |
2edd7e44 | 732 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 733 | { |
27da23d5 | 734 | dVAR; |
14a5cf38 JH |
735 | IV i; |
736 | if ((SSize_t) len <= 0) | |
737 | len = strlen(name); | |
3a1ee7e8 | 738 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 739 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
740 | const STRLEN this_len = strlen(f->name); |
741 | if (this_len == len && memEQ(f->name, name, len)) { | |
fe5a182c | 742 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
743 | return f; |
744 | } | |
745 | } | |
3a1ee7e8 NIS |
746 | if (load && PL_subname && PL_def_layerlist |
747 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
748 | if (PL_in_load_module) { |
749 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
750 | return NULL; | |
751 | } else { | |
396482e1 | 752 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 753 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 754 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 755 | ENTER; |
4fa7c2bf | 756 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 757 | if (cv) { |
9cfa90c0 | 758 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 759 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 760 | } |
4fa7c2bf | 761 | PL_in_load_module = TRUE; |
d7a09b41 SR |
762 | /* |
763 | * The two SVs are magically freed by load_module | |
764 | */ | |
a0714e2c | 765 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
766 | LEAVE; |
767 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
768 | } | |
14a5cf38 JH |
769 | } |
770 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
771 | return NULL; | |
f3862f8b NIS |
772 | } |
773 | ||
2a1bc955 | 774 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
775 | |
776 | static int | |
777 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
778 | { | |
14a5cf38 | 779 | if (SvROK(sv)) { |
159b6efe | 780 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
781 | PerlIO * const ifp = IoIFP(io); |
782 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
783 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
784 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
785 | } |
786 | return 0; | |
b13b2135 NIS |
787 | } |
788 | ||
789 | static int | |
790 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
791 | { | |
14a5cf38 | 792 | if (SvROK(sv)) { |
159b6efe | 793 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
794 | PerlIO * const ifp = IoIFP(io); |
795 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
796 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
797 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
798 | } |
799 | return 0; | |
b13b2135 NIS |
800 | } |
801 | ||
802 | static int | |
803 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
804 | { | |
be2597df | 805 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 806 | return 0; |
b13b2135 NIS |
807 | } |
808 | ||
809 | static int | |
810 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
811 | { | |
be2597df | 812 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 813 | return 0; |
b13b2135 NIS |
814 | } |
815 | ||
816 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
817 | perlio_mg_get, |
818 | perlio_mg_set, | |
22569500 | 819 | NULL, /* len */ |
14a5cf38 JH |
820 | perlio_mg_clear, |
821 | perlio_mg_free | |
b13b2135 NIS |
822 | }; |
823 | ||
15eb3045 | 824 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
825 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
826 | { | |
14a5cf38 | 827 | dXSARGS; |
dcda55fc AL |
828 | SV * const sv = SvRV(ST(1)); |
829 | AV * const av = newAV(); | |
14a5cf38 JH |
830 | MAGIC *mg; |
831 | int count = 0; | |
832 | int i; | |
ad64d0ec | 833 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
834 | SvRMAGICAL_off(sv); |
835 | mg = mg_find(sv, PERL_MAGIC_ext); | |
836 | mg->mg_virtual = &perlio_vtab; | |
837 | mg_magical(sv); | |
be2597df | 838 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
839 | for (i = 2; i < items; i++) { |
840 | STRLEN len; | |
dcda55fc AL |
841 | const char * const name = SvPV_const(ST(i), len); |
842 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 843 | if (layer) { |
b37c2d43 | 844 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
845 | } |
846 | else { | |
847 | ST(count) = ST(i); | |
848 | count++; | |
849 | } | |
850 | } | |
851 | SvREFCNT_dec(av); | |
852 | XSRETURN(count); | |
853 | } | |
854 | ||
22569500 | 855 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 856 | |
e3f3bf95 NIS |
857 | SV * |
858 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 859 | { |
da51bb9b | 860 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 861 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 862 | return sv; |
e3f3bf95 NIS |
863 | } |
864 | ||
15eb3045 | 865 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 866 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 867 | { |
486ec47a | 868 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
869 | during loading of layers. |
870 | */ | |
97aff369 | 871 | dVAR; |
c9bca74a | 872 | dXSARGS; |
58c0efa5 | 873 | PERL_UNUSED_ARG(cv); |
c9bca74a | 874 | if (items) |
e62f0680 | 875 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
876 | XSRETURN(0); |
877 | } | |
878 | ||
15eb3045 | 879 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 880 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 881 | { |
97aff369 | 882 | dVAR; |
14a5cf38 | 883 | dXSARGS; |
58c0efa5 | 884 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
885 | if (items < 2) |
886 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
887 | else { | |
de009b76 | 888 | STRLEN len; |
46c461b5 | 889 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 890 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 891 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
892 | ST(0) = |
893 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
894 | &PL_sv_undef; | |
895 | XSRETURN(1); | |
896 | } | |
0c4f7ff0 NIS |
897 | } |
898 | ||
e3f3bf95 NIS |
899 | void |
900 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
901 | { | |
97aff369 | 902 | dVAR; |
3a1ee7e8 NIS |
903 | if (!PL_known_layers) |
904 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 905 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 906 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
907 | } |
908 | ||
1141d9f8 | 909 | int |
fcf2db38 | 910 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 911 | { |
97aff369 | 912 | dVAR; |
14a5cf38 JH |
913 | if (names) { |
914 | const char *s = names; | |
915 | while (*s) { | |
916 | while (isSPACE(*s) || *s == ':') | |
917 | s++; | |
918 | if (*s) { | |
919 | STRLEN llen = 0; | |
920 | const char *e = s; | |
bd61b366 | 921 | const char *as = NULL; |
14a5cf38 JH |
922 | STRLEN alen = 0; |
923 | if (!isIDFIRST(*s)) { | |
924 | /* | |
925 | * Message is consistent with how attribute lists are | |
926 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 927 | * seen as an invalid separator character. |
14a5cf38 | 928 | */ |
de009b76 | 929 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
930 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
931 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
932 | q, *s, q, s); | |
93189314 | 933 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
934 | return -1; |
935 | } | |
936 | do { | |
937 | e++; | |
0eb30aeb | 938 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
939 | llen = e - s; |
940 | if (*e == '(') { | |
941 | int nesting = 1; | |
942 | as = ++e; | |
943 | while (nesting) { | |
944 | switch (*e++) { | |
945 | case ')': | |
946 | if (--nesting == 0) | |
947 | alen = (e - 1) - as; | |
948 | break; | |
949 | case '(': | |
950 | ++nesting; | |
951 | break; | |
952 | case '\\': | |
953 | /* | |
954 | * It's a nul terminated string, not allowed | |
955 | * to \ the terminating null. Anything other | |
71200d45 | 956 | * character is passed over. |
14a5cf38 JH |
957 | */ |
958 | if (*e++) { | |
959 | break; | |
960 | } | |
961 | /* | |
71200d45 | 962 | * Drop through |
14a5cf38 JH |
963 | */ |
964 | case '\0': | |
965 | e--; | |
a2a5de95 NC |
966 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
967 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
968 | (int) (e - s), s); | |
14a5cf38 JH |
969 | return -1; |
970 | default: | |
971 | /* | |
71200d45 | 972 | * boring. |
14a5cf38 JH |
973 | */ |
974 | break; | |
975 | } | |
976 | } | |
977 | } | |
978 | if (e > s) { | |
46c461b5 | 979 | PerlIO_funcs * const layer = |
14a5cf38 JH |
980 | PerlIO_find_layer(aTHX_ s, llen, 1); |
981 | if (layer) { | |
a951d81d BL |
982 | SV *arg = NULL; |
983 | if (as) | |
984 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 985 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 986 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 987 | SvREFCNT_dec(arg); |
14a5cf38 JH |
988 | } |
989 | else { | |
a2a5de95 NC |
990 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
991 | (int) llen, s); | |
14a5cf38 JH |
992 | return -1; |
993 | } | |
994 | } | |
995 | s = e; | |
996 | } | |
997 | } | |
998 | } | |
999 | return 0; | |
1141d9f8 NIS |
1000 | } |
1001 | ||
dfebf958 | 1002 | void |
fcf2db38 | 1003 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1004 | { |
97aff369 | 1005 | dVAR; |
27da23d5 | 1006 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1007 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1008 | tab = &PerlIO_crlf; |
846be114 | 1009 | #else |
6ce75a77 | 1010 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1011 | tab = &PerlIO_stdio; |
846be114 | 1012 | #endif |
14a5cf38 | 1013 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1014 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1015 | &PL_sv_undef); |
dfebf958 NIS |
1016 | } |
1017 | ||
e3f3bf95 | 1018 | SV * |
14a5cf38 | 1019 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1020 | { |
14a5cf38 | 1021 | return av->array[n].arg; |
e3f3bf95 NIS |
1022 | } |
1023 | ||
f3862f8b | 1024 | PerlIO_funcs * |
14a5cf38 | 1025 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1026 | { |
14a5cf38 JH |
1027 | if (n >= 0 && n < av->cur) { |
1028 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1029 | av->array[n].funcs->name); | |
1030 | return av->array[n].funcs; | |
1031 | } | |
1032 | if (!def) | |
1033 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1034 | return def; | |
e3f3bf95 NIS |
1035 | } |
1036 | ||
4ec2216f NIS |
1037 | IV |
1038 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1039 | { | |
8772537c AL |
1040 | PERL_UNUSED_ARG(mode); |
1041 | PERL_UNUSED_ARG(arg); | |
1042 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1043 | if (PerlIOValid(f)) { |
1044 | PerlIO_flush(f); | |
1045 | PerlIO_pop(aTHX_ f); | |
1046 | return 0; | |
1047 | } | |
1048 | return -1; | |
1049 | } | |
1050 | ||
27da23d5 | 1051 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1052 | sizeof(PerlIO_funcs), |
1053 | "pop", | |
1054 | 0, | |
1055 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1056 | PerlIOPop_pushed, | |
1057 | NULL, | |
c0888ace | 1058 | PerlIOBase_open, |
4ec2216f NIS |
1059 | NULL, |
1060 | NULL, | |
1061 | NULL, | |
1062 | NULL, | |
1063 | NULL, | |
1064 | NULL, | |
1065 | NULL, | |
1066 | NULL, | |
de009b76 AL |
1067 | NULL, |
1068 | NULL, | |
4ec2216f NIS |
1069 | NULL, /* flush */ |
1070 | NULL, /* fill */ | |
1071 | NULL, | |
1072 | NULL, | |
1073 | NULL, | |
1074 | NULL, | |
1075 | NULL, /* get_base */ | |
1076 | NULL, /* get_bufsiz */ | |
1077 | NULL, /* get_ptr */ | |
1078 | NULL, /* get_cnt */ | |
1079 | NULL, /* set_ptrcnt */ | |
1080 | }; | |
1081 | ||
fcf2db38 | 1082 | PerlIO_list_t * |
e3f3bf95 NIS |
1083 | PerlIO_default_layers(pTHX) |
1084 | { | |
97aff369 | 1085 | dVAR; |
3a1ee7e8 | 1086 | if (!PL_def_layerlist) { |
284167a5 | 1087 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1088 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1089 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1090 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1091 | #if defined(WIN32) |
27da23d5 | 1092 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1093 | #if 0 |
14a5cf38 | 1094 | osLayer = &PerlIO_win32; |
0c4128ad | 1095 | #endif |
2f8118af | 1096 | #endif |
27da23d5 JH |
1097 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1098 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1099 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1100 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1101 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1102 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1103 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1104 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1105 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1106 | &PL_sv_undef); | |
1107 | if (s) { | |
3a1ee7e8 | 1108 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1109 | } |
1110 | else { | |
3a1ee7e8 | 1111 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1112 | } |
1141d9f8 | 1113 | } |
3a1ee7e8 NIS |
1114 | if (PL_def_layerlist->cur < 2) { |
1115 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1116 | } |
3a1ee7e8 | 1117 | return PL_def_layerlist; |
e3f3bf95 NIS |
1118 | } |
1119 | ||
0c4f7ff0 NIS |
1120 | void |
1121 | Perl_boot_core_PerlIO(pTHX) | |
1122 | { | |
1123 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1124 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1125 | __FILE__); | |
0c4f7ff0 | 1126 | #endif |
14a5cf38 | 1127 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1128 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1129 | } |
e3f3bf95 NIS |
1130 | |
1131 | PerlIO_funcs * | |
1132 | PerlIO_default_layer(pTHX_ I32 n) | |
1133 | { | |
97aff369 | 1134 | dVAR; |
46c461b5 | 1135 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1136 | if (n < 0) |
1137 | n += av->cur; | |
27da23d5 | 1138 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1139 | } |
1140 | ||
a999f61b NIS |
1141 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1142 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1143 | |
1144 | void | |
1141d9f8 | 1145 | PerlIO_stdstreams(pTHX) |
60382766 | 1146 | { |
97aff369 | 1147 | dVAR; |
a1ea730d | 1148 | if (!PL_perlio) { |
8995e67d | 1149 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1150 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1151 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1152 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1153 | } | |
60382766 NIS |
1154 | } |
1155 | ||
1156 | PerlIO * | |
27da23d5 | 1157 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1158 | { |
16865ff7 | 1159 | VERIFY_HEAD(f); |
2dc2558e | 1160 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1161 | Perl_croak( aTHX_ |
5cf96513 RB |
1162 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1163 | "PerlIO layer function table size", (UV)tab->fsize, | |
1164 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1165 | } |
1166 | if (tab->size) { | |
b464bac0 | 1167 | PerlIOl *l; |
2dc2558e | 1168 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1169 | Perl_croak( aTHX_ |
5cf96513 RB |
1170 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1171 | "PerlIO layer instance size", (UV)tab->size, | |
1172 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1173 | } |
1174 | /* Real layer with a data area */ | |
002e75cf JH |
1175 | if (f) { |
1176 | char *temp; | |
1177 | Newxz(temp, tab->size, char); | |
1178 | l = (PerlIOl*)temp; | |
1179 | if (l) { | |
1180 | l->next = *f; | |
1181 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1182 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1183 | *f = l; |
1184 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1185 | (void*)f, tab->name, | |
1186 | (mode) ? mode : "(Null)", (void*)arg); | |
1187 | if (*l->tab->Pushed && | |
1188 | (*l->tab->Pushed) | |
1189 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1190 | PerlIO_pop(aTHX_ f); | |
1191 | return NULL; | |
1192 | } | |
2dc2558e | 1193 | } |
002e75cf JH |
1194 | else |
1195 | return NULL; | |
2dc2558e NIS |
1196 | } |
1197 | } | |
1198 | else if (f) { | |
1199 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1200 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1201 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1202 | if (tab->Pushed && |
27da23d5 | 1203 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1204 | return NULL; |
14a5cf38 JH |
1205 | } |
1206 | } | |
1207 | return f; | |
60382766 NIS |
1208 | } |
1209 | ||
81fe74fb LT |
1210 | PerlIO * |
1211 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1212 | IV n, const char *mode, int fd, int imode, int perm, | |
1213 | PerlIO *old, int narg, SV **args) | |
1214 | { | |
1215 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1216 | if (tab && tab->Open) { | |
1217 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1218 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1219 | PerlIO_close(ret); |
1220 | return NULL; | |
1221 | } | |
1222 | return ret; | |
1223 | } | |
1224 | SETERRNO(EINVAL, LIB_INVARG); | |
1225 | return NULL; | |
1226 | } | |
1227 | ||
dfebf958 | 1228 | IV |
86e05cf2 NIS |
1229 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1230 | { | |
1231 | if (PerlIOValid(f)) { | |
1232 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1233 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1234 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1235 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1236 | } | |
1237 | else { | |
1238 | /* Not suitable - pop it */ | |
1239 | PerlIO_pop(aTHX_ f); | |
1240 | } | |
1241 | return 0; | |
1242 | } | |
1243 | return -1; | |
1244 | } | |
1245 | ||
1246 | IV | |
2dc2558e | 1247 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1248 | { |
8772537c AL |
1249 | PERL_UNUSED_ARG(mode); |
1250 | PERL_UNUSED_ARG(arg); | |
1251 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1252 | |
04892f78 | 1253 | if (PerlIOValid(f)) { |
86e05cf2 | 1254 | PerlIO *t; |
de009b76 | 1255 | const PerlIOl *l; |
14a5cf38 | 1256 | PerlIO_flush(f); |
86e05cf2 NIS |
1257 | /* |
1258 | * Strip all layers that are not suitable for a raw stream | |
1259 | */ | |
1260 | t = f; | |
1261 | while (t && (l = *t)) { | |
cc6623a8 | 1262 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1263 | /* Has a handler - normal case */ |
9d97e8b8 | 1264 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1265 | if (*t == l) { |
1266 | /* Layer still there - move down a layer */ | |
1267 | t = PerlIONext(t); | |
1268 | } | |
1269 | } | |
1270 | else { | |
1271 | return -1; | |
1272 | } | |
14a5cf38 JH |
1273 | } |
1274 | else { | |
86e05cf2 NIS |
1275 | /* No handler - pop it */ |
1276 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1277 | } |
1278 | } | |
86e05cf2 | 1279 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1280 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1281 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1282 | return 0; |
1283 | } | |
14a5cf38 JH |
1284 | } |
1285 | return -1; | |
dfebf958 NIS |
1286 | } |
1287 | ||
ac27b0f5 | 1288 | int |
14a5cf38 | 1289 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1290 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1291 | { |
14a5cf38 JH |
1292 | int code = 0; |
1293 | while (n < max) { | |
8772537c | 1294 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1295 | if (tab) { |
1296 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1297 | code = -1; | |
1298 | break; | |
1299 | } | |
1300 | } | |
1301 | n++; | |
1302 | } | |
1303 | return code; | |
e3f3bf95 NIS |
1304 | } |
1305 | ||
1306 | int | |
ac27b0f5 NIS |
1307 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1308 | { | |
14a5cf38 | 1309 | int code = 0; |
da0fccaa DG |
1310 | ENTER; |
1311 | save_scalar(PL_errgv); | |
53f1b6d2 | 1312 | if (f && names) { |
8772537c | 1313 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1314 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1315 | if (code == 0) { | |
d9dac8cd | 1316 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1317 | } |
3a1ee7e8 | 1318 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1319 | } |
da0fccaa | 1320 | LEAVE; |
14a5cf38 | 1321 | return code; |
ac27b0f5 NIS |
1322 | } |
1323 | ||
f3862f8b | 1324 | |
60382766 | 1325 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1326 | /* |
71200d45 | 1327 | * Given the abstraction above the public API functions |
14a5cf38 | 1328 | */ |
60382766 NIS |
1329 | |
1330 | int | |
f5b9d040 | 1331 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1332 | { |
68b5363f | 1333 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1334 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1335 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1336 | iotype, mode, (names) ? names : "(Null)"); |
1337 | ||
03c0554d NIS |
1338 | if (names) { |
1339 | /* Do not flush etc. if (e.g.) switching encodings. | |
1340 | if a pushed layer knows it needs to flush lower layers | |
1341 | (for example :unix which is never going to call them) | |
1342 | it can do the flush when it is pushed. | |
1343 | */ | |
1344 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1345 | } | |
1346 | else { | |
86e05cf2 | 1347 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1348 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1349 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1350 | O_BINARY so we can look for it in mode. | |
1351 | */ | |
1352 | if (!(mode & O_BINARY)) { | |
1353 | /* Text mode */ | |
86e05cf2 NIS |
1354 | /* FIXME?: Looking down the layer stack seems wrong, |
1355 | but is a way of reaching past (say) an encoding layer | |
1356 | to flip CRLF-ness of the layer(s) below | |
1357 | */ | |
03c0554d NIS |
1358 | while (*f) { |
1359 | /* Perhaps we should turn on bottom-most aware layer | |
1360 | e.g. Ilya's idea that UNIX TTY could serve | |
1361 | */ | |
cc6623a8 DM |
1362 | if (PerlIOBase(f)->tab && |
1363 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1364 | { | |
03c0554d NIS |
1365 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1366 | /* Not in text mode - flush any pending stuff and flip it */ | |
1367 | PerlIO_flush(f); | |
1368 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1369 | } | |
1370 | /* Only need to turn it on in one layer so we are done */ | |
1371 | return TRUE; | |
ed53a2bb | 1372 | } |
03c0554d | 1373 | f = PerlIONext(f); |
14a5cf38 | 1374 | } |
03c0554d NIS |
1375 | /* Not finding a CRLF aware layer presumably means we are binary |
1376 | which is not what was requested - so we failed | |
1377 | We _could_ push :crlf layer but so could caller | |
1378 | */ | |
1379 | return FALSE; | |
14a5cf38 | 1380 | } |
6ce75a77 | 1381 | #endif |
86e05cf2 NIS |
1382 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1383 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1384 | */ |
a0714e2c | 1385 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1386 | } |
f5b9d040 NIS |
1387 | } |
1388 | ||
f5b9d040 | 1389 | int |
e87a358a | 1390 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1391 | { |
37725cdc | 1392 | if (PerlIOValid(f)) { |
46c461b5 | 1393 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1394 | if (tab && tab->Close) |
1395 | return (*tab->Close)(aTHX_ f); | |
1396 | else | |
1397 | return PerlIOBase_close(aTHX_ f); | |
1398 | } | |
14a5cf38 | 1399 | else { |
93189314 | 1400 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1401 | return -1; |
1402 | } | |
76ced9ad NIS |
1403 | } |
1404 | ||
b931b1d9 | 1405 | int |
e87a358a | 1406 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1407 | { |
de009b76 | 1408 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1409 | while (PerlIOValid(f)) { |
1410 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1411 | if (PerlIO_lockcnt(f)) |
1412 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1413 | f = PerlIONext(f); | |
f6c77cf1 | 1414 | } |
14a5cf38 | 1415 | return code; |
b931b1d9 NIS |
1416 | } |
1417 | ||
b931b1d9 | 1418 | int |
e87a358a | 1419 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1420 | { |
97aff369 | 1421 | dVAR; |
b32dd47e | 1422 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1423 | } |
1424 | ||
1141d9f8 | 1425 | |
fcf2db38 | 1426 | static PerlIO_funcs * |
2edd7e44 NIS |
1427 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1428 | { | |
97aff369 | 1429 | dVAR; |
14a5cf38 | 1430 | /* |
71200d45 | 1431 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1432 | */ |
526fd1b4 | 1433 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1434 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1435 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1436 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1437 | if (!f) |
dcbac5bb | 1438 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1439 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1440 | return f; |
1441 | } | |
14a5cf38 JH |
1442 | |
1443 | /* | |
71200d45 | 1444 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1445 | */ |
1446 | switch (SvTYPE(sv)) { | |
1447 | case SVt_PVAV: | |
6a245ed1 | 1448 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1449 | case SVt_PVHV: |
6a245ed1 | 1450 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1451 | case SVt_PVCV: |
6a245ed1 | 1452 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1453 | case SVt_PVGV: |
6a245ed1 | 1454 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1455 | default: |
1456 | return NULL; | |
14a5cf38 | 1457 | } |
2edd7e44 NIS |
1458 | } |
1459 | ||
fcf2db38 | 1460 | PerlIO_list_t * |
14a5cf38 JH |
1461 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1462 | const char *mode, int narg, SV **args) | |
1463 | { | |
97aff369 | 1464 | dVAR; |
14a5cf38 JH |
1465 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1466 | int incdef = 1; | |
a1ea730d | 1467 | if (!PL_perlio) |
14a5cf38 JH |
1468 | PerlIO_stdstreams(aTHX); |
1469 | if (narg) { | |
dcda55fc | 1470 | SV * const arg = *args; |
14a5cf38 | 1471 | /* |
71200d45 NIS |
1472 | * If it is a reference but not an object see if we have a handler |
1473 | * for it | |
14a5cf38 JH |
1474 | */ |
1475 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1476 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1477 | if (handler) { |
3a1ee7e8 NIS |
1478 | def = PerlIO_list_alloc(aTHX); |
1479 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1480 | incdef = 0; |
1481 | } | |
1482 | /* | |
e934609f | 1483 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1484 | * something sensible else we will just stringfy and open |
71200d45 | 1485 | * resulting string. |
14a5cf38 JH |
1486 | */ |
1487 | } | |
1488 | } | |
9fe371da | 1489 | if (!layers || !*layers) |
11bcd5da | 1490 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1491 | if (layers && *layers) { |
1492 | PerlIO_list_t *av; | |
1493 | if (incdef) { | |
a951d81d | 1494 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1495 | } |
1496 | else { | |
1497 | av = def; | |
1498 | } | |
0cff2cf3 NIS |
1499 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1500 | return av; | |
1501 | } | |
1502 | else { | |
1503 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1504 | return NULL; |
0cff2cf3 | 1505 | } |
14a5cf38 JH |
1506 | } |
1507 | else { | |
1508 | if (incdef) | |
1509 | def->refcnt++; | |
1510 | return def; | |
1511 | } | |
ee518936 NIS |
1512 | } |
1513 | ||
1514 | PerlIO * | |
14a5cf38 JH |
1515 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1516 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1517 | { | |
97aff369 | 1518 | dVAR; |
14a5cf38 JH |
1519 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1520 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1521 | if (!layers || !*layers) |
11bcd5da | 1522 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1523 | if (layers && *layers) |
1524 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1525 | } | |
1526 | } | |
1527 | else { | |
de009b76 | 1528 | PerlIO_list_t *layera; |
14a5cf38 JH |
1529 | IV n; |
1530 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1531 | if (PerlIOValid(f)) { |
14a5cf38 | 1532 | /* |
71200d45 NIS |
1533 | * This is "reopen" - it is not tested as perl does not use it |
1534 | * yet | |
14a5cf38 JH |
1535 | */ |
1536 | PerlIOl *l = *f; | |
3a1ee7e8 | 1537 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1538 | while (l) { |
a951d81d | 1539 | SV *arg = NULL; |
cc6623a8 | 1540 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1541 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1542 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1543 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1544 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1545 | l = *PerlIONext(&l); |
1546 | } | |
1547 | } | |
1548 | else { | |
1549 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1550 | if (!layera) { |
1551 | return NULL; | |
1552 | } | |
14a5cf38 JH |
1553 | } |
1554 | /* | |
71200d45 | 1555 | * Start at "top" of layer stack |
14a5cf38 JH |
1556 | */ |
1557 | n = layera->cur - 1; | |
1558 | while (n >= 0) { | |
46c461b5 | 1559 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1560 | if (t && t->Open) { |
1561 | tab = t; | |
1562 | break; | |
1563 | } | |
1564 | n--; | |
1565 | } | |
1566 | if (tab) { | |
1567 | /* | |
71200d45 | 1568 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1569 | */ |
7cf31beb | 1570 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1571 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1572 | } |
14a5cf38 | 1573 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1574 | tab->name, layers ? layers : "(Null)", mode, fd, |
1575 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1576 | if (tab->Open) |
1577 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1578 | f, narg, args); | |
1579 | else { | |
1580 | SETERRNO(EINVAL, LIB_INVARG); | |
1581 | f = NULL; | |
1582 | } | |
14a5cf38 JH |
1583 | if (f) { |
1584 | if (n + 1 < layera->cur) { | |
1585 | /* | |
1586 | * More layers above the one that we used to open - | |
71200d45 | 1587 | * apply them now |
14a5cf38 | 1588 | */ |
d9dac8cd NIS |
1589 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1590 | /* If pushing layers fails close the file */ | |
1591 | PerlIO_close(f); | |
14a5cf38 JH |
1592 | f = NULL; |
1593 | } | |
1594 | } | |
1595 | } | |
1596 | } | |
3a1ee7e8 | 1597 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1598 | } |
1599 | return f; | |
ee518936 | 1600 | } |
b931b1d9 NIS |
1601 | |
1602 | ||
9e353e3b | 1603 | SSize_t |
e87a358a | 1604 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1605 | { |
7918f24d NC |
1606 | PERL_ARGS_ASSERT_PERLIO_READ; |
1607 | ||
b32dd47e | 1608 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1609 | } |
1610 | ||
313ca112 | 1611 | SSize_t |
e87a358a | 1612 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1613 | { |
7918f24d NC |
1614 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1615 | ||
b32dd47e | 1616 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1617 | } |
1618 | ||
9e353e3b | 1619 | SSize_t |
e87a358a | 1620 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1621 | { |
7918f24d NC |
1622 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1623 | ||
b32dd47e | 1624 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1625 | } |
1626 | ||
6f9d8c32 | 1627 | int |
e87a358a | 1628 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1629 | { |
b32dd47e | 1630 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1631 | } |
1632 | ||
9e353e3b | 1633 | Off_t |
e87a358a | 1634 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1635 | { |
b32dd47e | 1636 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1637 | } |
1638 | ||
6f9d8c32 | 1639 | int |
e87a358a | 1640 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1641 | { |
97aff369 | 1642 | dVAR; |
14a5cf38 JH |
1643 | if (f) { |
1644 | if (*f) { | |
de009b76 | 1645 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1646 | |
1647 | if (tab && tab->Flush) | |
f62ce20a | 1648 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1649 | else |
1650 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1651 | } |
1652 | else { | |
fe5a182c | 1653 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1654 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1655 | return -1; |
1656 | } | |
1657 | } | |
1658 | else { | |
1659 | /* | |
1660 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1661 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1662 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1663 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1664 | * decisions? --jhi |
14a5cf38 | 1665 | */ |
303f2dc3 DM |
1666 | PerlIOl **table = &PL_perlio; |
1667 | PerlIOl *ff; | |
14a5cf38 | 1668 | int code = 0; |
303f2dc3 | 1669 | while ((ff = *table)) { |
14a5cf38 | 1670 | int i; |
303f2dc3 | 1671 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1672 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1673 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1674 | code = -1; |
303f2dc3 | 1675 | ff++; |
14a5cf38 JH |
1676 | } |
1677 | } | |
1678 | return code; | |
1679 | } | |
760ac839 LW |
1680 | } |
1681 | ||
a9c883f6 | 1682 | void |
f62ce20a | 1683 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1684 | { |
97aff369 | 1685 | dVAR; |
303f2dc3 DM |
1686 | PerlIOl **table = &PL_perlio; |
1687 | PerlIOl *f; | |
14a5cf38 JH |
1688 | while ((f = *table)) { |
1689 | int i; | |
303f2dc3 | 1690 | table = (PerlIOl **) (f++); |
14a5cf38 | 1691 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1692 | if (f->next |
1693 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1694 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1695 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1696 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1697 | f++; |
1698 | } | |
a9c883f6 | 1699 | } |
a9c883f6 NIS |
1700 | } |
1701 | ||
06da4f11 | 1702 | int |
e87a358a | 1703 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1704 | { |
b32dd47e | 1705 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1706 | } |
1707 | ||
f3862f8b NIS |
1708 | int |
1709 | PerlIO_isutf8(PerlIO *f) | |
1710 | { | |
1b7a0411 JH |
1711 | if (PerlIOValid(f)) |
1712 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1713 | else | |
1714 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1715 | |
1b7a0411 | 1716 | return -1; |
f3862f8b NIS |
1717 | } |
1718 | ||
6f9d8c32 | 1719 | int |
e87a358a | 1720 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1721 | { |
b32dd47e | 1722 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1723 | } |
1724 | ||
9e353e3b | 1725 | int |
e87a358a | 1726 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1727 | { |
b32dd47e | 1728 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1729 | } |
1730 | ||
9e353e3b | 1731 | void |
e87a358a | 1732 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1733 | { |
b32dd47e | 1734 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1735 | } |
1736 | ||
9e353e3b | 1737 | void |
e87a358a | 1738 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1739 | { |
b32dd47e | 1740 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1741 | } |
1742 | ||
9e353e3b NIS |
1743 | int |
1744 | PerlIO_has_base(PerlIO *f) | |
1745 | { | |
1b7a0411 | 1746 | if (PerlIOValid(f)) { |
46c461b5 | 1747 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1748 | |
1749 | if (tab) | |
1750 | return (tab->Get_base != NULL); | |
1b7a0411 | 1751 | } |
1b7a0411 JH |
1752 | |
1753 | return 0; | |
760ac839 LW |
1754 | } |
1755 | ||
9e353e3b NIS |
1756 | int |
1757 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1758 | { |
d7dfc388 SK |
1759 | if (PerlIOValid(f)) { |
1760 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1761 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1762 | |
d7dfc388 SK |
1763 | if (tab) |
1764 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1765 | } |
14a5cf38 | 1766 | } |
1b7a0411 | 1767 | |
14a5cf38 | 1768 | return 0; |
9e353e3b NIS |
1769 | } |
1770 | ||
9e353e3b NIS |
1771 | int |
1772 | PerlIO_has_cntptr(PerlIO *f) | |
1773 | { | |
04892f78 | 1774 | if (PerlIOValid(f)) { |
46c461b5 | 1775 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1776 | |
1777 | if (tab) | |
1778 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1779 | } |
1b7a0411 | 1780 | |
14a5cf38 | 1781 | return 0; |
9e353e3b NIS |
1782 | } |
1783 | ||
9e353e3b NIS |
1784 | int |
1785 | PerlIO_canset_cnt(PerlIO *f) | |
1786 | { | |
04892f78 | 1787 | if (PerlIOValid(f)) { |
46c461b5 | 1788 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1789 | |
1790 | if (tab) | |
1791 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1792 | } |
1b7a0411 | 1793 | |
14a5cf38 | 1794 | return 0; |
760ac839 LW |
1795 | } |
1796 | ||
888911fc | 1797 | STDCHAR * |
e87a358a | 1798 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1799 | { |
b32dd47e | 1800 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1801 | } |
1802 | ||
b66f3475 | 1803 | SSize_t |
e87a358a | 1804 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1805 | { |
b66f3475 | 1806 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1807 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1808 | } |
1809 | ||
9e353e3b | 1810 | STDCHAR * |
e87a358a | 1811 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1812 | { |
b32dd47e | 1813 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1814 | } |
1815 | ||
b66f3475 | 1816 | SSize_t |
e87a358a | 1817 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1818 | { |
b32dd47e | 1819 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1820 | } |
1821 | ||
9e353e3b | 1822 | void |
b66f3475 | 1823 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1824 | { |
b32dd47e | 1825 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1826 | } |
1827 | ||
9e353e3b | 1828 | void |
b66f3475 | 1829 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1830 | { |
b32dd47e | 1831 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1832 | } |
1833 | ||
4ec2216f | 1834 | |
9e353e3b | 1835 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1836 | /* |
71200d45 | 1837 | * utf8 and raw dummy layers |
14a5cf38 | 1838 | */ |
dfebf958 | 1839 | |
26fb694e | 1840 | IV |
2dc2558e | 1841 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1842 | { |
96a5add6 | 1843 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1844 | PERL_UNUSED_ARG(mode); |
1845 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1846 | if (PerlIOValid(f)) { |
cc6623a8 | 1847 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1848 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1849 | else | |
1850 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1851 | return 0; | |
1852 | } | |
1853 | return -1; | |
26fb694e NIS |
1854 | } |
1855 | ||
27da23d5 | 1856 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1857 | sizeof(PerlIO_funcs), |
14a5cf38 | 1858 | "utf8", |
2dc2558e | 1859 | 0, |
a778d1f5 | 1860 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1861 | PerlIOUtf8_pushed, |
1862 | NULL, | |
c0888ace | 1863 | PerlIOBase_open, |
14a5cf38 JH |
1864 | NULL, |
1865 | NULL, | |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
1869 | NULL, | |
1870 | NULL, | |
1871 | NULL, | |
de009b76 AL |
1872 | NULL, |
1873 | NULL, | |
22569500 NIS |
1874 | NULL, /* flush */ |
1875 | NULL, /* fill */ | |
14a5cf38 JH |
1876 | NULL, |
1877 | NULL, | |
1878 | NULL, | |
1879 | NULL, | |
22569500 NIS |
1880 | NULL, /* get_base */ |
1881 | NULL, /* get_bufsiz */ | |
1882 | NULL, /* get_ptr */ | |
1883 | NULL, /* get_cnt */ | |
1884 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1885 | }; |
1886 | ||
27da23d5 | 1887 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1888 | sizeof(PerlIO_funcs), |
14a5cf38 | 1889 | "bytes", |
2dc2558e | 1890 | 0, |
a778d1f5 | 1891 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1892 | PerlIOUtf8_pushed, |
1893 | NULL, | |
c0888ace | 1894 | PerlIOBase_open, |
14a5cf38 JH |
1895 | NULL, |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
1901 | NULL, | |
1902 | NULL, | |
de009b76 AL |
1903 | NULL, |
1904 | NULL, | |
22569500 NIS |
1905 | NULL, /* flush */ |
1906 | NULL, /* fill */ | |
14a5cf38 JH |
1907 | NULL, |
1908 | NULL, | |
1909 | NULL, | |
1910 | NULL, | |
22569500 NIS |
1911 | NULL, /* get_base */ |
1912 | NULL, /* get_bufsiz */ | |
1913 | NULL, /* get_ptr */ | |
1914 | NULL, /* get_cnt */ | |
1915 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1916 | }; |
1917 | ||
27da23d5 | 1918 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1919 | sizeof(PerlIO_funcs), |
14a5cf38 | 1920 | "raw", |
2dc2558e | 1921 | 0, |
14a5cf38 JH |
1922 | PERLIO_K_DUMMY, |
1923 | PerlIORaw_pushed, | |
1924 | PerlIOBase_popped, | |
ecfd0649 | 1925 | PerlIOBase_open, |
14a5cf38 JH |
1926 | NULL, |
1927 | NULL, | |
1928 | NULL, | |
1929 | NULL, | |
1930 | NULL, | |
1931 | NULL, | |
1932 | NULL, | |
1933 | NULL, | |
de009b76 AL |
1934 | NULL, |
1935 | NULL, | |
22569500 NIS |
1936 | NULL, /* flush */ |
1937 | NULL, /* fill */ | |
14a5cf38 JH |
1938 | NULL, |
1939 | NULL, | |
1940 | NULL, | |
1941 | NULL, | |
22569500 NIS |
1942 | NULL, /* get_base */ |
1943 | NULL, /* get_bufsiz */ | |
1944 | NULL, /* get_ptr */ | |
1945 | NULL, /* get_cnt */ | |
1946 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1947 | }; |
1948 | /*--------------------------------------------------------------------------------------*/ | |
1949 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1950 | /* |
71200d45 | 1951 | * "Methods" of the "base class" |
14a5cf38 | 1952 | */ |
9e353e3b NIS |
1953 | |
1954 | IV | |
f62ce20a | 1955 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1956 | { |
04892f78 | 1957 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1958 | } |
1959 | ||
f5b9d040 | 1960 | char * |
81428673 | 1961 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1962 | { |
1963 | char *s = buf; | |
81428673 | 1964 | if (PerlIOValid(f)) { |
de009b76 | 1965 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1966 | if (flags & PERLIO_F_APPEND) { |
1967 | *s++ = 'a'; | |
1968 | if (flags & PERLIO_F_CANREAD) { | |
1969 | *s++ = '+'; | |
1970 | } | |
14a5cf38 | 1971 | } |
81428673 NIS |
1972 | else if (flags & PERLIO_F_CANREAD) { |
1973 | *s++ = 'r'; | |
1974 | if (flags & PERLIO_F_CANWRITE) | |
1975 | *s++ = '+'; | |
1976 | } | |
1977 | else if (flags & PERLIO_F_CANWRITE) { | |
1978 | *s++ = 'w'; | |
1979 | if (flags & PERLIO_F_CANREAD) { | |
1980 | *s++ = '+'; | |
1981 | } | |
14a5cf38 | 1982 | } |
35990314 | 1983 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1984 | if (!(flags & PERLIO_F_CRLF)) |
1985 | *s++ = 'b'; | |
5f1a76d0 | 1986 | #endif |
81428673 | 1987 | } |
14a5cf38 JH |
1988 | *s = '\0'; |
1989 | return buf; | |
f5b9d040 NIS |
1990 | } |
1991 | ||
81428673 | 1992 | |
76ced9ad | 1993 | IV |
2dc2558e | 1994 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1995 | { |
de009b76 | 1996 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1997 | PERL_UNUSED_CONTEXT; |
8772537c | 1998 | PERL_UNUSED_ARG(arg); |
de009b76 | 1999 | |
14a5cf38 JH |
2000 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2001 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 2002 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
2003 | l->flags |= PERLIO_F_FASTGETS; |
2004 | if (mode) { | |
3b6c1aba | 2005 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2006 | mode++; |
2007 | switch (*mode++) { | |
2008 | case 'r': | |
2009 | l->flags |= PERLIO_F_CANREAD; | |
2010 | break; | |
2011 | case 'a': | |
2012 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2013 | break; | |
2014 | case 'w': | |
2015 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2016 | break; | |
2017 | default: | |
93189314 | 2018 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2019 | return -1; |
2020 | } | |
2021 | while (*mode) { | |
2022 | switch (*mode++) { | |
2023 | case '+': | |
2024 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2025 | break; | |
2026 | case 'b': | |
2027 | l->flags &= ~PERLIO_F_CRLF; | |
2028 | break; | |
2029 | case 't': | |
2030 | l->flags |= PERLIO_F_CRLF; | |
2031 | break; | |
2032 | default: | |
93189314 | 2033 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2034 | return -1; |
2035 | } | |
2036 | } | |
2037 | } | |
2038 | else { | |
2039 | if (l->next) { | |
2040 | l->flags |= l->next->flags & | |
2041 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2042 | PERLIO_F_APPEND); | |
2043 | } | |
2044 | } | |
5e2ab84b | 2045 | #if 0 |
14a5cf38 | 2046 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2047 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2048 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2049 | #endif |
14a5cf38 | 2050 | return 0; |
76ced9ad NIS |
2051 | } |
2052 | ||
2053 | IV | |
f62ce20a | 2054 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2055 | { |
96a5add6 | 2056 | PERL_UNUSED_CONTEXT; |
8772537c | 2057 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2058 | return 0; |
760ac839 LW |
2059 | } |
2060 | ||
9e353e3b | 2061 | SSize_t |
f62ce20a | 2062 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2063 | { |
14a5cf38 | 2064 | /* |
71200d45 | 2065 | * Save the position as current head considers it |
14a5cf38 | 2066 | */ |
de009b76 | 2067 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2068 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2069 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2070 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2071 | } |
2072 | ||
f6c77cf1 | 2073 | SSize_t |
f62ce20a | 2074 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2075 | { |
14a5cf38 JH |
2076 | STDCHAR *buf = (STDCHAR *) vbuf; |
2077 | if (f) { | |
263df5f1 JH |
2078 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2079 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2080 | SETERRNO(EBADF, SS_IVCHAN); | |
2081 | return 0; | |
2082 | } | |
14a5cf38 | 2083 | while (count > 0) { |
93c2c2ec IZ |
2084 | get_cnt: |
2085 | { | |
14a5cf38 JH |
2086 | SSize_t avail = PerlIO_get_cnt(f); |
2087 | SSize_t take = 0; | |
2088 | if (avail > 0) | |
94e529cc | 2089 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2090 | if (take > 0) { |
2091 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2092 | Copy(ptr, buf, take, STDCHAR); | |
2093 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2094 | count -= take; | |
2095 | buf += take; | |
93c2c2ec IZ |
2096 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2097 | goto get_cnt; | |
14a5cf38 JH |
2098 | } |
2099 | if (count > 0 && avail <= 0) { | |
2100 | if (PerlIO_fill(f) != 0) | |
2101 | break; | |
2102 | } | |
93c2c2ec | 2103 | } |
14a5cf38 JH |
2104 | } |
2105 | return (buf - (STDCHAR *) vbuf); | |
2106 | } | |
f6c77cf1 | 2107 | return 0; |
f6c77cf1 NIS |
2108 | } |
2109 | ||
9e353e3b | 2110 | IV |
f62ce20a | 2111 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2112 | { |
96a5add6 | 2113 | PERL_UNUSED_CONTEXT; |
8772537c | 2114 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2115 | return 0; |
9e353e3b NIS |
2116 | } |
2117 | ||
2118 | IV | |
f62ce20a | 2119 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2120 | { |
96a5add6 | 2121 | PERL_UNUSED_CONTEXT; |
8772537c | 2122 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2123 | return -1; |
06da4f11 NIS |
2124 | } |
2125 | ||
2126 | IV | |
f62ce20a | 2127 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2128 | { |
37725cdc NIS |
2129 | IV code = -1; |
2130 | if (PerlIOValid(f)) { | |
2131 | PerlIO *n = PerlIONext(f); | |
2132 | code = PerlIO_flush(f); | |
2133 | PerlIOBase(f)->flags &= | |
2134 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2135 | while (PerlIOValid(n)) { | |
de009b76 | 2136 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2137 | if (tab && tab->Close) { |
2138 | if ((*tab->Close)(aTHX_ n) != 0) | |
2139 | code = -1; | |
2140 | break; | |
2141 | } | |
2142 | else { | |
2143 | PerlIOBase(n)->flags &= | |
2144 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2145 | } | |
2146 | n = PerlIONext(n); | |
2147 | } | |
2148 | } | |
2149 | else { | |
2150 | SETERRNO(EBADF, SS_IVCHAN); | |
2151 | } | |
14a5cf38 | 2152 | return code; |
9e353e3b NIS |
2153 | } |
2154 | ||
2155 | IV | |
f62ce20a | 2156 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2157 | { |
96a5add6 | 2158 | PERL_UNUSED_CONTEXT; |
04892f78 | 2159 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2160 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2161 | } | |
2162 | return 1; | |
9e353e3b NIS |
2163 | } |
2164 | ||
2165 | IV | |
f62ce20a | 2166 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2167 | { |
96a5add6 | 2168 | PERL_UNUSED_CONTEXT; |
04892f78 | 2169 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2170 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2171 | } | |
2172 | return 1; | |
9e353e3b NIS |
2173 | } |
2174 | ||
2175 | void | |
f62ce20a | 2176 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2177 | { |
04892f78 | 2178 | if (PerlIOValid(f)) { |
dcda55fc | 2179 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2180 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2181 | if (PerlIOValid(n)) |
14a5cf38 JH |
2182 | PerlIO_clearerr(n); |
2183 | } | |
9e353e3b NIS |
2184 | } |
2185 | ||
2186 | void | |
f62ce20a | 2187 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2188 | { |
96a5add6 | 2189 | PERL_UNUSED_CONTEXT; |
04892f78 | 2190 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2191 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2192 | } | |
9e353e3b NIS |
2193 | } |
2194 | ||
93a8090d NIS |
2195 | SV * |
2196 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2197 | { | |
2198 | if (!arg) | |
a0714e2c | 2199 | return NULL; |
24d147a6 | 2200 | #ifdef USE_ITHREADS |
93a8090d | 2201 | if (param) { |
a951d81d BL |
2202 | arg = sv_dup(arg, param); |
2203 | SvREFCNT_inc_simple_void_NN(arg); | |
2204 | return arg; | |
93a8090d NIS |
2205 | } |
2206 | else { | |
2207 | return newSVsv(arg); | |
2208 | } | |
2209 | #else | |
1b6737cc | 2210 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2211 | return newSVsv(arg); |
2212 | #endif | |
2213 | } | |
2214 | ||
2215 | PerlIO * | |
ecdeb87c | 2216 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2217 | { |
1b6737cc | 2218 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2219 | if (PerlIOValid(nexto)) { |
de009b76 | 2220 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2221 | if (tab && tab->Dup) |
2222 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2223 | else | |
2224 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2225 | } |
2226 | if (f) { | |
dcda55fc | 2227 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2228 | SV *arg = NULL; |
93a8090d | 2229 | char buf[8]; |
316ebaf2 | 2230 | assert(self); |
fe5a182c | 2231 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
cc6623a8 DM |
2232 | self ? self->name : "(Null)", |
2233 | (void*)f, (void*)o, (void*)param); | |
2234 | if (self && self->Getarg) | |
210e727c | 2235 | arg = (*self->Getarg)(aTHX_ o, param, flags); |
93a8090d | 2236 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2237 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2238 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2239 | SvREFCNT_dec(arg); |
93a8090d NIS |
2240 | } |
2241 | return f; | |
2242 | } | |
2243 | ||
27da23d5 | 2244 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2245 | |
8b84d7dd | 2246 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2247 | static void |
2248 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2249 | dVAR; |
22c96fc1 | 2250 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2251 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2252 | int *new_array; |
2253 | ||
2254 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2255 | old_max, new_fd, new_max); | |
2256 | ||
2257 | if (new_fd < old_max) { | |
2258 | return; | |
2259 | } | |
2260 | ||
f4ae5be6 NC |
2261 | assert (new_max > new_fd); |
2262 | ||
eae082a0 JH |
2263 | /* Use plain realloc() since we need this memory to be really |
2264 | * global and visible to all the interpreters and/or threads. */ | |
2265 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2266 | |
2267 | if (!new_array) { | |
8b84d7dd | 2268 | #ifdef USE_ITHREADS |
6cb8cb21 | 2269 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2270 | #endif |
4cbe3a7d | 2271 | croak_no_mem(); |
22c96fc1 NC |
2272 | } |
2273 | ||
2274 | PL_perlio_fd_refcnt_size = new_max; | |
2275 | PL_perlio_fd_refcnt = new_array; | |
2276 | ||
95b63a38 JH |
2277 | PerlIO_debug("Zeroing %p, %d\n", |
2278 | (void*)(new_array + old_max), | |
2279 | new_max - old_max); | |
22c96fc1 NC |
2280 | |
2281 | Zero(new_array + old_max, new_max - old_max, int); | |
2282 | } | |
2283 | ||
2284 | ||
93a8090d NIS |
2285 | void |
2286 | PerlIO_init(pTHX) | |
2287 | { | |
8b84d7dd | 2288 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2289 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2290 | } |
2291 | ||
168d5872 NIS |
2292 | void |
2293 | PerlIOUnix_refcnt_inc(int fd) | |
2294 | { | |
27da23d5 | 2295 | dTHX; |
22c96fc1 | 2296 | if (fd >= 0) { |
97aff369 | 2297 | dVAR; |
22c96fc1 | 2298 | |
8b84d7dd | 2299 | #ifdef USE_ITHREADS |
6cb8cb21 | 2300 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2301 | #endif |
22c96fc1 NC |
2302 | if (fd >= PL_perlio_fd_refcnt_size) |
2303 | S_more_refcounted_fds(aTHX_ fd); | |
2304 | ||
27da23d5 | 2305 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2306 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2307 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2308 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2309 | fd, PL_perlio_fd_refcnt[fd]); | |
2310 | } | |
2311 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2312 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2313 | |
8b84d7dd | 2314 | #ifdef USE_ITHREADS |
6cb8cb21 | 2315 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2316 | #endif |
8b84d7dd | 2317 | } else { |
12605ff9 | 2318 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2319 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2320 | } |
2321 | } | |
2322 | ||
168d5872 NIS |
2323 | int |
2324 | PerlIOUnix_refcnt_dec(int fd) | |
2325 | { | |
2326 | int cnt = 0; | |
22c96fc1 | 2327 | if (fd >= 0) { |
97aff369 | 2328 | dVAR; |
8b84d7dd | 2329 | #ifdef USE_ITHREADS |
6cb8cb21 | 2330 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2331 | #endif |
8b84d7dd | 2332 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2333 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2334 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2335 | fd, PL_perlio_fd_refcnt_size); |
2336 | } | |
2337 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2338 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2339 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2340 | fd, PL_perlio_fd_refcnt[fd]); |
2341 | } | |
27da23d5 | 2342 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2343 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2344 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2345 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2346 | #endif |
8b84d7dd | 2347 | } else { |
12605ff9 | 2348 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2349 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2350 | } |
2351 | return cnt; | |
2352 | } | |
2353 | ||
2e0cfa16 FC |
2354 | int |
2355 | PerlIOUnix_refcnt(int fd) | |
2356 | { | |
2357 | dTHX; | |
2358 | int cnt = 0; | |
2359 | if (fd >= 0) { | |
2360 | dVAR; | |
2361 | #ifdef USE_ITHREADS | |
2362 | MUTEX_LOCK(&PL_perlio_mutex); | |
2363 | #endif | |
2364 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2365 | /* diag_listed_as: refcnt: fd %d%s */ | |
2366 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2367 | fd, PL_perlio_fd_refcnt_size); | |
2368 | } | |
2369 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2370 | /* diag_listed_as: refcnt: fd %d%s */ | |
2371 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2372 | fd, PL_perlio_fd_refcnt[fd]); | |
2373 | } | |
2374 | cnt = PL_perlio_fd_refcnt[fd]; | |
2375 | #ifdef USE_ITHREADS | |
2376 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2377 | #endif | |
2378 | } else { | |
2379 | /* diag_listed_as: refcnt: fd %d%s */ | |
2380 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2381 | } | |
2382 | return cnt; | |
2383 | } | |
2384 | ||
694c95cf JH |
2385 | void |
2386 | PerlIO_cleanup(pTHX) | |
2387 | { | |
97aff369 | 2388 | dVAR; |
694c95cf JH |
2389 | int i; |
2390 | #ifdef USE_ITHREADS | |
a25429c6 | 2391 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2392 | #else |
2393 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2394 | #endif |
e47547a8 | 2395 | |
694c95cf JH |
2396 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2397 | for (i=0; i < 3; i++) | |
2398 | PerlIOUnix_refcnt_inc(i); | |
2399 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2400 | /* Restore STDIN..STDERR refcount */ | |
2401 | for (i=0; i < 3; i++) | |
2402 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2403 | |
2404 | if (PL_known_layers) { | |
2405 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2406 | PL_known_layers = NULL; | |
2407 | } | |
27da23d5 | 2408 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2409 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2410 | PL_def_layerlist = NULL; | |
2411 | } | |
6cb8cb21 RGS |
2412 | } |
2413 | ||
0934c9d9 | 2414 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2415 | { |
53d44271 | 2416 | dVAR; |
4f3da17a DM |
2417 | #if 0 |
2418 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2419 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2420 | being present (at least in win32) :-(. | |
2421 | Disable for now. | |
2422 | */ | |
6cb8cb21 RGS |
2423 | #ifdef DEBUGGING |
2424 | { | |
2425 | /* By now all filehandles should have been closed, so any | |
2426 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2427 | * errors. */ | |
77db880c JH |
2428 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2429 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2430 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2431 | int i; |
2432 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2433 | if (PL_perlio_fd_refcnt[i]) { |
2434 | const STRLEN len = | |
2435 | my_snprintf(buf, sizeof(buf), | |
2436 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2437 | i, PL_perlio_fd_refcnt[i]); | |
2438 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2439 | } | |
6cb8cb21 RGS |
2440 | } |
2441 | } | |
2442 | #endif | |
4f3da17a | 2443 | #endif |
eae082a0 JH |
2444 | /* Not bothering with PL_perlio_mutex since by now |
2445 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2446 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2447 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2448 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2449 | PL_perlio_fd_refcnt = NULL; |
2450 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2451 | } |
694c95cf JH |
2452 | } |
2453 | ||
9e353e3b | 2454 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2455 | /* |
71200d45 | 2456 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2457 | */ |
9e353e3b | 2458 | |
14a5cf38 | 2459 | typedef struct { |
22569500 NIS |
2460 | struct _PerlIO base; /* The generic part */ |
2461 | int fd; /* UNIX like file descriptor */ | |
2462 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2463 | } PerlIOUnix; |
2464 | ||
abf9167d DM |
2465 | static void |
2466 | S_lockcnt_dec(pTHX_ const void* f) | |
2467 | { | |
2468 | PerlIO_lockcnt((PerlIO*)f)--; | |
2469 | } | |
2470 | ||
2471 | ||
2472 | /* call the signal handler, and if that handler happens to clear | |
2473 | * this handle, free what we can and return true */ | |
2474 | ||
2475 | static bool | |
2476 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2477 | ENTER; | |
2478 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2479 | PerlIO_lockcnt(f)++; | |
2480 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2481 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2482 | LEAVE; | |
abf9167d | 2483 | return 0; |
be48bbe8 | 2484 | } |
abf9167d DM |
2485 | /* we've just run some perl-level code that could have done |
2486 | * anything, including closing the file or clearing this layer. | |
2487 | * If so, free any lower layers that have already been | |
2488 | * cleared, then return an error. */ | |
2489 | while (PerlIOValid(f) && | |
2490 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2491 | { | |
2492 | const PerlIOl *l = *f; | |
2493 | *f = l->next; | |
2494 | Safefree(l); | |
2495 | } | |
be48bbe8 | 2496 | LEAVE; |
abf9167d DM |
2497 | return 1; |
2498 | } | |
2499 | ||
6f9d8c32 | 2500 | int |
9e353e3b | 2501 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2502 | { |
14a5cf38 | 2503 | int oflags = -1; |
3b6c1aba | 2504 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2505 | mode++; |
2506 | switch (*mode) { | |
2507 | case 'r': | |
2508 | oflags = O_RDONLY; | |
2509 | if (*++mode == '+') { | |
2510 | oflags = O_RDWR; | |
2511 | mode++; | |
2512 | } | |
2513 | break; | |
2514 | ||
2515 | case 'w': | |
2516 | oflags = O_CREAT | O_TRUNC; | |
2517 | if (*++mode == '+') { | |
2518 | oflags |= O_RDWR; | |
2519 | mode++; | |
2520 | } | |
2521 | else | |
2522 | oflags |= O_WRONLY; | |
2523 | break; | |
2524 | ||
2525 | case 'a': | |
2526 | oflags = O_CREAT | O_APPEND; | |
2527 | if (*++mode == '+') { | |
2528 | oflags |= O_RDWR; | |
2529 | mode++; | |
2530 | } | |
2531 | else | |
2532 | oflags |= O_WRONLY; | |
2533 | break; | |
2534 | } | |
38d96942 | 2535 | #ifdef PERLIO_BINARY_AND_TEXT_DIFFERENT_AND_EFFECTIVE |
14a5cf38 JH |
2536 | if (*mode == 'b') { |
2537 | oflags |= O_BINARY; | |
2538 | oflags &= ~O_TEXT; | |
2539 | mode++; | |
2540 | } | |
2541 | else if (*mode == 't') { | |
2542 | oflags |= O_TEXT; | |
2543 | oflags &= ~O_BINARY; | |
2544 | mode++; | |
2545 | } | |
93f31ee9 | 2546 | else { |
93f31ee9 PG |
2547 | /* |
2548 | * If neither "t" nor "b" was specified, open the file | |
2549 | * in O_BINARY mode. | |
2550 | */ | |
2551 | oflags |= O_BINARY; | |
93f31ee9 | 2552 | } |
38d96942 | 2553 | #endif |
14a5cf38 | 2554 | if (*mode || oflags == -1) { |
93189314 | 2555 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2556 | oflags = -1; |
2557 | } | |
2558 | return oflags; | |
9e353e3b NIS |
2559 | } |
2560 | ||
2561 | IV | |
f62ce20a | 2562 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2563 | { |
96a5add6 | 2564 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2565 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2566 | } |
2567 | ||
aa063c35 NIS |
2568 | static void |
2569 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2570 | { |
de009b76 | 2571 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2572 | #if defined(WIN32) |
aa063c35 NIS |
2573 | Stat_t st; |
2574 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2575 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2576 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2577 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2578 | } | |
aa063c35 NIS |
2579 | else { |
2580 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2581 | } | |
6caa5a9c NIS |
2582 | } |
2583 | #endif | |
aa063c35 NIS |
2584 | s->fd = fd; |
2585 | s->oflags = imode; | |
2586 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2587 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2588 | } |
2589 | ||
2590 | IV | |
2591 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2592 | { | |
2593 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2594 | if (*PerlIONext(f)) { |
4b069b44 | 2595 | /* We never call down so do any pending stuff now */ |
03c0554d | 2596 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2597 | /* |
71200d45 | 2598 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2599 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2600 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2601 | */ |
acbd16bf | 2602 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2603 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2604 | } |
2605 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2606 | |
14a5cf38 | 2607 | return code; |
4b803d04 NIS |
2608 | } |
2609 | ||
c2fcde81 JH |
2610 | IV |
2611 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2612 | { | |
de009b76 | 2613 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2614 | Off_t new_loc; |
96a5add6 | 2615 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2616 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2617 | #ifdef ESPIPE | |
2618 | SETERRNO(ESPIPE, LIB_INVARG); | |
2619 | #else | |
2620 | SETERRNO(EINVAL, LIB_INVARG); | |
2621 | #endif | |
2622 | return -1; | |
2623 | } | |
0723351e NC |
2624 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2625 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2626 | return -1; |
c2fcde81 JH |
2627 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2628 | return 0; | |
2629 | } | |
2630 | ||
9e353e3b | 2631 | PerlIO * |
14a5cf38 JH |
2632 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2633 | IV n, const char *mode, int fd, int imode, | |
2634 | int perm, PerlIO *f, int narg, SV **args) | |
2635 | { | |
d9dac8cd | 2636 | if (PerlIOValid(f)) { |
cc6623a8 | 2637 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2638 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2639 | } |
2640 | if (narg > 0) { | |
3b6c1aba | 2641 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2642 | mode++; |
2643 | else { | |
2644 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2645 | #ifdef VMS |
2646 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2647 | #else | |
14a5cf38 | 2648 | perm = 0666; |
5e2ce0f3 | 2649 | #endif |
14a5cf38 JH |
2650 | } |
2651 | if (imode != -1) { | |
41188aa0 TC |
2652 | STRLEN len; |
2653 | const char *path = SvPV_const(*args, len); | |
2654 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2655 | return NULL; |
14a5cf38 JH |
2656 | fd = PerlLIO_open3(path, imode, perm); |
2657 | } | |
2658 | } | |
2659 | if (fd >= 0) { | |
3b6c1aba | 2660 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2661 | mode++; |
2662 | if (!f) { | |
2663 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2664 | } |
2665 | if (!PerlIOValid(f)) { | |
a33cf58c | 2666 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2667 | PerlLIO_close(fd); |
a33cf58c NIS |
2668 | return NULL; |
2669 | } | |
d9dac8cd | 2670 | } |
aa063c35 | 2671 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2672 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2673 | if (*mode == IoTYPE_APPEND) |
2674 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2675 | return f; |
2676 | } | |
2677 | else { | |
2678 | if (f) { | |
6f207bd3 | 2679 | NOOP; |
14a5cf38 | 2680 | /* |
71200d45 | 2681 | * FIXME: pop layers ??? |
14a5cf38 JH |
2682 | */ |
2683 | } | |
2684 | return NULL; | |
2685 | } | |
9e353e3b NIS |
2686 | } |
2687 | ||
71200d45 | 2688 | PerlIO * |
ecdeb87c | 2689 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2690 | { |
dcda55fc | 2691 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2692 | int fd = os->fd; |
ecdeb87c NIS |
2693 | if (flags & PERLIO_DUP_FD) { |
2694 | fd = PerlLIO_dup(fd); | |
2695 | } | |
22c96fc1 | 2696 | if (fd >= 0) { |
ecdeb87c | 2697 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2698 | if (f) { |
2699 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2700 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2701 | return f; |
2702 | } | |
0a20f69b | 2703 | PerlLIO_close(fd); |
71200d45 NIS |
2704 | } |
2705 | return NULL; | |
2706 | } | |
2707 | ||
2708 | ||
9e353e3b | 2709 | SSize_t |
f62ce20a | 2710 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2711 | { |
97aff369 | 2712 | dVAR; |
abf9167d DM |
2713 | int fd; |
2714 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2715 | return -1; | |
2716 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2717 | #ifdef PERLIO_STD_SPECIAL |
2718 | if (fd == 0) | |
2719 | return PERLIO_STD_IN(fd, vbuf, count); | |
2720 | #endif | |
81428673 | 2721 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2722 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2723 | return 0; |
1fd8f4ce | 2724 | } |
14a5cf38 | 2725 | while (1) { |
b464bac0 | 2726 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2727 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2728 | if (len < 0) { |
2729 | if (errno != EAGAIN) { | |
2730 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2731 | } | |
2732 | } | |
2733 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2734 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2735 | SETERRNO(0,0); |
2736 | } | |
14a5cf38 JH |
2737 | return len; |
2738 | } | |
abf9167d DM |
2739 | /* EINTR */ |
2740 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2741 | return -1; | |
14a5cf38 | 2742 | } |
b464bac0 | 2743 | /*NOTREACHED*/ |
9e353e3b NIS |
2744 | } |
2745 | ||
2746 | SSize_t | |
f62ce20a | 2747 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2748 | { |
97aff369 | 2749 | dVAR; |
abf9167d DM |
2750 | int fd; |
2751 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2752 | return -1; | |
2753 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2754 | #ifdef PERLIO_STD_SPECIAL |
2755 | if (fd == 1 || fd == 2) | |
2756 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2757 | #endif | |
14a5cf38 | 2758 | while (1) { |
de009b76 | 2759 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2760 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2761 | if (len < 0) { |
2762 | if (errno != EAGAIN) { | |
2763 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2764 | } | |
2765 | } | |
14a5cf38 JH |
2766 | return len; |
2767 | } | |
abf9167d DM |
2768 | /* EINTR */ |
2769 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2770 | return -1; | |
06da4f11 | 2771 | } |
1b6737cc | 2772 | /*NOTREACHED*/ |
9e353e3b NIS |
2773 | } |
2774 | ||
9e353e3b | 2775 | Off_t |
f62ce20a | 2776 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2777 | { |
96a5add6 AL |
2778 | PERL_UNUSED_CONTEXT; |
2779 | ||
14a5cf38 | 2780 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2781 | } |
2782 | ||
2556f95e GF |
2783 | |
2784 | IV | |
2376d97d | 2785 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2786 | { |
97aff369 | 2787 | dVAR; |
de009b76 | 2788 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2789 | int code = 0; |
168d5872 NIS |
2790 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2791 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2792 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2793 | return 0; | |
22569500 | 2794 | } |
93a8090d NIS |
2795 | } |
2796 | else { | |
93189314 | 2797 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2798 | return -1; |
2799 | } | |
14a5cf38 JH |
2800 | while (PerlLIO_close(fd) != 0) { |
2801 | if (errno != EINTR) { | |
2802 | code = -1; | |
2803 | break; | |
2804 | } | |
abf9167d DM |
2805 | /* EINTR */ |
2806 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2807 | return -1; | |
14a5cf38 JH |
2808 | } |
2809 | if (code == 0) { | |
2810 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2811 | } | |
2812 | return code; | |
9e353e3b NIS |
2813 | } |
2814 | ||
27da23d5 | 2815 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2816 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2817 | "unix", |
2818 | sizeof(PerlIOUnix), | |
2819 | PERLIO_K_RAW, | |
2820 | PerlIOUnix_pushed, | |
2376d97d | 2821 | PerlIOBase_popped, |
14a5cf38 | 2822 | PerlIOUnix_open, |
86e05cf2 | 2823 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2824 | NULL, |
2825 | PerlIOUnix_fileno, | |
71200d45 | 2826 | PerlIOUnix_dup, |
14a5cf38 JH |
2827 | PerlIOUnix_read, |
2828 | PerlIOBase_unread, | |
2829 | PerlIOUnix_write, | |
2830 | PerlIOUnix_seek, | |
2831 | PerlIOUnix_tell, | |
2832 | PerlIOUnix_close, | |
22569500 NIS |
2833 | PerlIOBase_noop_ok, /* flush */ |
2834 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2835 | PerlIOBase_eof, |
2836 | PerlIOBase_error, | |
2837 | PerlIOBase_clearerr, | |
2838 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2839 | NULL, /* get_base */ |
2840 | NULL, /* get_bufsiz */ | |
2841 | NULL, /* get_ptr */ | |
2842 | NULL, /* get_cnt */ | |
2843 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2844 | }; |
2845 | ||
2846 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2847 | /* |
71200d45 | 2848 | * stdio as a layer |
14a5cf38 | 2849 | */ |
9e353e3b | 2850 | |
313e59c8 NIS |
2851 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2852 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2853 | broken by the last second glibc 2.3 fix | |
2854 | */ | |
2855 | #define STDIO_BUFFER_WRITABLE | |
2856 | #endif | |
2857 | ||
2858 | ||
14a5cf38 JH |
2859 | typedef struct { |
2860 | struct _PerlIO base; | |
22569500 | 2861 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2862 | } PerlIOStdio; |
2863 | ||
2864 | IV | |
f62ce20a | 2865 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2866 | { |
96a5add6 AL |
2867 | PERL_UNUSED_CONTEXT; |
2868 | ||
c4420975 AL |
2869 | if (PerlIOValid(f)) { |
2870 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2871 | if (s) | |
2872 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2873 | } |
2874 | errno = EBADF; | |
2875 | return -1; | |
9e353e3b NIS |
2876 | } |
2877 | ||
766a733e | 2878 | char * |
14a5cf38 JH |
2879 | PerlIOStdio_mode(const char *mode, char *tmode) |
2880 | { | |
de009b76 | 2881 | char * const ret = tmode; |
a0625d38 SR |
2882 | if (mode) { |
2883 | while (*mode) { | |
2884 | *tmode++ = *mode++; | |
2885 | } | |
14a5cf38 | 2886 | } |
95005ad8 | 2887 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2888 | *tmode++ = 'b'; |
2889 | #endif | |
14a5cf38 JH |
2890 | *tmode = '\0'; |
2891 | return ret; | |
2892 | } | |
2893 | ||
4b803d04 | 2894 | IV |
2dc2558e | 2895 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2896 | { |
1fd8f4ce NIS |
2897 | PerlIO *n; |
2898 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2899 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2900 | if (toptab == tab) { |
2901 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2902 | PerlIO_pop(aTHX_ f); | |
2903 | return 0; | |
2904 | } else { | |
de009b76 | 2905 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2906 | char tmode[8]; |
2907 | FILE *stdio; | |
81428673 | 2908 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2909 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2910 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2911 | /* We never call down so do any pending stuff now */ | |
2912 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2913 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2914 | } |
1fd8f4ce NIS |
2915 | else { |
2916 | return -1; | |
2917 | } | |
2918 | } | |
14a5cf38 | 2919 | } |
2dc2558e | 2920 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2921 | } |
2922 | ||
22569500 | 2923 | |
9e353e3b | 2924 | PerlIO * |
4b069b44 | 2925 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2926 | { |
14a5cf38 JH |
2927 | dTHX; |
2928 | PerlIO *f = NULL; | |
2929 | if (stdio) { | |
22569500 | 2930 | PerlIOStdio *s; |
375ed12a JH |
2931 | int fd0 = fileno(stdio); |
2932 | if (fd0 < 0) { | |
2933 | return NULL; | |
2934 | } | |
4b069b44 NIS |
2935 | if (!mode || !*mode) { |
2936 | /* We need to probe to see how we can open the stream | |
2937 | so start with read/write and then try write and read | |
2938 | we dup() so that we can fclose without loosing the fd. | |
2939 | ||
2940 | Note that the errno value set by a failing fdopen | |
2941 | varies between stdio implementations. | |
2942 | */ | |
375ed12a JH |
2943 | const int fd = PerlLIO_dup(fd0); |
2944 | FILE *f2; | |
2945 | if (fd < 0) { | |
2946 | return f; | |
2947 | } | |
2948 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2949 | if (!f2) { |
a33cf58c | 2950 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2951 | } |
2952 | if (!f2) { | |
a33cf58c | 2953 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2954 | } |
2955 | if (!f2) { | |
2956 | /* Don't seem to be able to open */ | |
2957 | PerlLIO_close(fd); | |
2958 | return f; | |
2959 | } | |
2960 | fclose(f2); | |
22569500 | 2961 | } |
de092133 | 2962 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2963 | s = PerlIOSelf(f, PerlIOStdio); |
2964 | s->stdio = stdio; | |
c586124f | 2965 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
a33cf58c | 2966 | } |
14a5cf38 JH |
2967 | } |
2968 | return f; | |
9e353e3b NIS |
2969 | } |
2970 | ||
2971 | PerlIO * | |
14a5cf38 JH |
2972 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2973 | IV n, const char *mode, int fd, int imode, | |
2974 | int perm, PerlIO *f, int narg, SV **args) | |
2975 | { | |
2976 | char tmode[8]; | |
d9dac8cd | 2977 | if (PerlIOValid(f)) { |
41188aa0 TC |
2978 | STRLEN len; |
2979 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 2980 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 2981 | FILE *stdio; |
41188aa0 | 2982 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 2983 | return NULL; |
1751d015 | 2984 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
2985 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
2986 | s->stdio); | |
14a5cf38 JH |
2987 | if (!s->stdio) |
2988 | return NULL; | |
2989 | s->stdio = stdio; | |
1751d015 | 2990 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2991 | return f; |
2992 | } | |
2993 | else { | |
2994 | if (narg > 0) { | |
41188aa0 TC |
2995 | STRLEN len; |
2996 | const char * const path = SvPV_const(*args, len); | |
2997 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2998 | return NULL; |
3b6c1aba | 2999 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3000 | mode++; |
3001 | fd = PerlLIO_open3(path, imode, perm); | |
3002 | } | |
3003 | else { | |
95005ad8 GH |
3004 | FILE *stdio; |
3005 | bool appended = FALSE; | |
3006 | #ifdef __CYGWIN__ | |
3007 | /* Cygwin wants its 'b' early. */ | |
3008 | appended = TRUE; | |
3009 | mode = PerlIOStdio_mode(mode, tmode); | |
3010 | #endif | |
3011 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3012 | if (stdio) { |
6f0313ac JH |
3013 | if (!f) { |
3014 | f = PerlIO_allocate(aTHX); | |
3015 | } | |
95005ad8 GH |
3016 | if (!appended) |
3017 | mode = PerlIOStdio_mode(mode, tmode); | |
3018 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3019 | if (f) { | |
0f0f9e2b JH |
3020 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3021 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3022 | } else { | |
3023 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3024 | } |
3025 | return f; | |
3026 | } | |
3027 | else { | |
3028 | return NULL; | |
3029 | } | |
14a5cf38 JH |
3030 | } |
3031 | } | |
3032 | if (fd >= 0) { | |
3033 | FILE *stdio = NULL; | |
3034 | int init = 0; | |
3b6c1aba | 3035 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3036 | init = 1; |
3037 | mode++; | |
3038 | } | |
3039 | if (init) { | |
3040 | switch (fd) { | |
3041 | case 0: | |
3042 | stdio = PerlSIO_stdin; | |
3043 | break; | |
3044 | case 1: | |
3045 | stdio = PerlSIO_stdout; | |
3046 | break; | |
3047 | case 2: | |
3048 | stdio = PerlSIO_stderr; | |
3049 | break; | |
3050 | } | |
3051 | } | |
3052 | else { | |
3053 | stdio = PerlSIO_fdopen(fd, mode = | |
3054 | PerlIOStdio_mode(mode, tmode)); | |
3055 | } | |
3056 | if (stdio) { | |
d9dac8cd NIS |
3057 | if (!f) { |
3058 | f = PerlIO_allocate(aTHX); | |
3059 | } | |
a33cf58c | 3060 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3061 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3062 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3063 | } |
14a5cf38 JH |
3064 | return f; |
3065 | } | |
0a20f69b | 3066 | PerlLIO_close(fd); |
14a5cf38 JH |
3067 | } |
3068 | } | |
ee518936 | 3069 | return NULL; |
9e353e3b NIS |
3070 | } |
3071 | ||
1751d015 | 3072 | PerlIO * |
ecdeb87c | 3073 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3074 | { |
3075 | /* This assumes no layers underneath - which is what | |
3076 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3077 | */ | |
ecdeb87c | 3078 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3079 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3080 | const int fd = fileno(stdio); |
9217ff3f | 3081 | char mode[8]; |
ecdeb87c | 3082 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3083 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3084 | if (dfd >= 0) { |
3085 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3086 | goto set_this; | |
ecdeb87c NIS |
3087 | } |
3088 | else { | |
6f207bd3 | 3089 | NOOP; |
ecdeb87c NIS |
3090 | /* FIXME: To avoid messy error recovery if dup fails |
3091 | re-use the existing stdio as though flag was not set | |
3092 | */ | |
3093 | } | |
3094 | } | |
9217ff3f NIS |
3095 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3096 | set_this: | |
694c95cf | 3097 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3098 | if(stdio) { |
3099 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3100 | } | |
1751d015 NIS |
3101 | } |
3102 | return f; | |
3103 | } | |
3104 | ||
0d7a5398 NIS |
3105 | static int |
3106 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3107 | { | |
96a5add6 AL |
3108 | PERL_UNUSED_CONTEXT; |
3109 | ||
0d7a5398 | 3110 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3111 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3112 | */ |
ef8eacb8 AT |
3113 | # if defined(__UCLIBC__) |
3114 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3115 | f->__filedes = -1; | |
3116 | return 1; | |
3117 | # elif defined(__GLIBC__) | |
0d7a5398 | 3118 | /* There may be a better way for GLIBC: |
37725cdc | 3119 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3120 | */ |
3121 | f->_fileno = -1; | |
3122 | return 1; | |
bdea967c | 3123 | # elif defined(__sun) |
f5992bc4 | 3124 | PERL_UNUSED_ARG(f); |
cfedb851 | 3125 | return 0; |
0d7a5398 NIS |
3126 | # elif defined(__hpux) |
3127 | f->__fileH = 0xff; | |
3128 | f->__fileL = 0xff; | |
3129 | return 1; | |
9837d373 | 3130 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3131 | your platform does not have special entry try this one. |
9837d373 NIS |
3132 | [For OSF only have confirmation for Tru64 (alpha) |
3133 | but assume other OSFs will be similar.] | |
37725cdc | 3134 | */ |
9837d373 | 3135 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3136 | f->_file = -1; |
3137 | return 1; | |
3138 | # elif defined(__FreeBSD__) | |
3139 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3140 | - we could insert a dummy func in the _close function entry |
3141 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3142 | */ |
3143 | f->_file = -1; | |
0c49ea6a SU |
3144 | return 1; |
3145 | # elif defined(__OpenBSD__) | |
3146 | /* There may be a better way on OpenBSD: | |
3147 | - we could insert a dummy func in the _close function entry | |
3148 | f->_close = (int (*)(void *)) dummy_close; | |
3149 | */ | |
3150 | f->_file = -1; | |
0d7a5398 | 3151 | return 1; |
59ad941d IZ |
3152 | # elif defined(__EMX__) |
3153 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3154 | f->_handle = -1; | |
3155 | return 1; | |
0d7a5398 NIS |
3156 | # elif defined(__CYGWIN__) |
3157 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3158 | - we could insert a dummy func in the _close function entry |
3159 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3160 | */ |
3161 | f->_file = -1; | |
3162 | return 1; | |
3163 | # elif defined(WIN32) | |
378eeda7 | 3164 | # if defined(UNDER_CE) |
b475b3e6 JH |
3165 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3166 | structure at all | |
3167 | */ | |
0d7a5398 NIS |
3168 | # else |
3169 | f->_file = -1; | |
3170 | # endif | |
3171 | return 1; | |
3172 | # else | |
3173 | #if 0 | |
37725cdc | 3174 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3175 | (which isn't thread safe) instead |
37725cdc | 3176 | */ |
0d7a5398 NIS |
3177 | # error "Don't know how to set FILE.fileno on your platform" |
3178 | #endif | |
8772537c | 3179 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3180 | return 0; |
3181 | # endif | |
3182 | } | |
3183 | ||
1751d015 | 3184 | IV |
f62ce20a | 3185 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3186 | { |
c4420975 | 3187 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3188 | if (!stdio) { |
3189 | errno = EBADF; | |
3190 | return -1; | |
3191 | } | |
9217ff3f | 3192 | else { |
de009b76 | 3193 | const int fd = fileno(stdio); |
0d7a5398 | 3194 | int invalidate = 0; |
bbfd922f | 3195 | IV result = 0; |
1d791a44 | 3196 | int dupfd = -1; |
4ee39169 | 3197 | dSAVEDERRNO; |
a2e578da MHM |
3198 | #ifdef USE_ITHREADS |
3199 | dVAR; | |
3200 | #endif | |
0d7a5398 | 3201 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3202 | /* Socks lib overrides close() but stdio isn't linked to |
3203 | that library (though we are) - so we must call close() | |
3204 | on sockets on stdio's behalf. | |
3205 | */ | |
0d7a5398 NIS |
3206 | int optval; |
3207 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3208 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3209 | invalidate = 1; |
0d7a5398 | 3210 | #endif |
d8723f43 NC |
3211 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3212 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3213 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3214 | trying to close an already closed handle which somehow it still has | |
3215 | a reference to. (via.xs, I'm looking at you). */ | |
3216 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3217 | /* File descriptor still in use */ | |
0d7a5398 | 3218 | invalidate = 1; |
d8723f43 | 3219 | } |
0d7a5398 | 3220 | if (invalidate) { |
6b4ce6c8 AL |
3221 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3222 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3223 | return 0; | |
3224 | if (stdio == stdout || stdio == stderr) | |
3225 | return PerlIO_flush(f); | |
37725cdc NIS |
3226 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3227 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3228 | fileno slot of the FILE * | |
3229 | */ | |
bbfd922f | 3230 | result = PerlIO_flush(f); |
4ee39169 | 3231 | SAVE_ERRNO; |
6b4ce6c8 | 3232 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3233 | if (!invalidate) { |
9bab90c0 NC |
3234 | #ifdef USE_ITHREADS |
3235 | MUTEX_LOCK(&PL_perlio_mutex); | |
5ca745d2 NC |
3236 | /* Right. We need a mutex here because for a brief while we |
3237 | will have the situation that fd is actually closed. Hence if | |
3238 | a second thread were to get into this block, its dup() would | |
3239 | likely return our fd as its dupfd. (after all, it is closed) | |
9bab90c0 NC |
3240 | Then if we get to the dup2() first, we blat the fd back |
3241 | (messing up its temporary as a side effect) only for it to | |
3242 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3243 | ||
3244 | /* There is, of course, a race condition, that any other thread | |
3245 | trying to input/output/whatever on this fd will be stuffed | |
5ca745d2 NC |
3246 | for the duration of this little manoeuvrer. Perhaps we |
3247 | should hold an IO mutex for the duration of every IO | |
3248 | operation if we know that invalidate doesn't work on this | |
3249 | platform, but that would suck, and could kill performance. | |
9bab90c0 NC |
3250 | |
3251 | Except that correctness trumps speed. | |
3252 | Advice from klortho #11912. */ | |
3253 | #endif | |
6b4ce6c8 | 3254 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3255 | #ifdef USE_ITHREADS |
9bab90c0 NC |
3256 | if (dupfd < 0) { |
3257 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
711e8db2 NC |
3258 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3259 | recover from here, or if closing this particular FILE * | |
3260 | is a good idea now. */ | |
3261 | } | |
3262 | #endif | |
3263 | } | |
94ccb807 JH |
3264 | } else { |
3265 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3266 | } |
0d7a5398 | 3267 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3268 | /* We treat error from stdio as success if we invalidated |
3269 | errno may NOT be expected EBADF | |
e8529473 NIS |
3270 | */ |
3271 | if (invalidate && result != 0) { | |
4ee39169 | 3272 | RESTORE_ERRNO; |
0d7a5398 | 3273 | result = 0; |
37725cdc | 3274 | } |
6b4ce6c8 AL |
3275 | #ifdef SOCKS5_VERSION_NAME |
3276 | /* in SOCKS' case, let close() determine return value */ | |
3277 | result = close(fd); | |
3278 | #endif | |
1d791a44 | 3279 | if (dupfd >= 0) { |
0d7a5398 | 3280 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3281 | PerlLIO_close(dupfd); |
711e8db2 | 3282 | #ifdef USE_ITHREADS |
9bab90c0 | 3283 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3284 | #endif |
9217ff3f NIS |
3285 | } |
3286 | return result; | |
37725cdc | 3287 | } |
1751d015 NIS |
3288 | } |
3289 | ||
9e353e3b | 3290 | SSize_t |
f62ce20a | 3291 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3292 | { |
97aff369 | 3293 | dVAR; |
abf9167d | 3294 | FILE * s; |
14a5cf38 | 3295 | SSize_t got = 0; |
abf9167d DM |
3296 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3297 | return -1; | |
3298 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3299 | for (;;) { |
3300 | if (count == 1) { | |
3301 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3302 | /* | |
3303 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3304 | * stdio does not do that for fread() | |
3305 | */ | |
de009b76 | 3306 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3307 | if (ch != EOF) { |
3308 | *buf = ch; | |
3309 | got = 1; | |
3310 | } | |
14a5cf38 | 3311 | } |
4d948241 NIS |
3312 | else |
3313 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3314 | if (got == 0 && PerlSIO_ferror(s)) |
3315 | got = -1; | |
42a7a32f | 3316 | if (got >= 0 || errno != EINTR) |
4d948241 | 3317 | break; |
abf9167d DM |
3318 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3319 | return -1; | |
42a7a32f | 3320 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3321 | } |
14a5cf38 | 3322 | return got; |
9e353e3b NIS |
3323 | } |
3324 | ||
3325 | SSize_t | |
f62ce20a | 3326 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3327 | { |
14a5cf38 | 3328 | SSize_t unread = 0; |
c4420975 | 3329 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3330 | |
313e59c8 | 3331 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3332 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3333 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3334 | STDCHAR *base = PerlIO_get_base(f); | |
3335 | SSize_t cnt = PerlIO_get_cnt(f); | |
3336 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3337 | SSize_t avail = ptr - base; | |
3338 | if (avail > 0) { | |
3339 | if (avail > count) { | |
3340 | avail = count; | |
3341 | } | |
3342 | ptr -= avail; | |
3343 | Move(buf-avail,ptr,avail,STDCHAR); | |
3344 | count -= avail; | |
3345 | unread += avail; | |
3346 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3347 | if (PerlSIO_feof(s) && unread >= 0) |
3348 | PerlSIO_clearerr(s); | |
3349 | } | |
3350 | } | |
313e59c8 NIS |
3351 | else |
3352 | #endif | |
3353 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3354 | /* We can get pointer to buffer but not its base |
3355 | Do ungetc() but check chars are ending up in the | |
3356 | buffer | |
3357 | */ | |
3358 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3359 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3360 | while (count > 0) { | |
de009b76 | 3361 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3362 | if (ungetc(ch,s) != ch) { |
3363 | /* ungetc did not work */ | |
3364 | break; | |
3365 | } | |
3366 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3367 | /* Did not change pointer as expected */ | |
375ed12a JH |
3368 | if (fgetc(s) != EOF) /* get char back again */ |
3369 | break; | |
9f7cd136 NIS |
3370 | } |
3371 | /* It worked ! */ | |
3372 | count--; | |
3373 | unread++; | |
93679785 NIS |
3374 | } |
3375 | } | |
3376 | ||
3377 | if (count > 0) { | |
3378 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3379 | } |
3380 | return unread; | |
9e353e3b NIS |
3381 | } |
3382 | ||
3383 | SSize_t | |
f62ce20a | 3384 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3385 | { |
97aff369 | 3386 | dVAR; |
4d948241 | 3387 | SSize_t got; |
abf9167d DM |
3388 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3389 | return -1; | |
4d948241 NIS |
3390 | for (;;) { |
3391 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3392 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3393 | if (got >= 0 || errno != EINTR) |
4d948241 | 3394 | break; |
abf9167d DM |
3395 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3396 | return -1; | |
42a7a32f | 3397 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3398 | } |
3399 | return got; | |
9e353e3b NIS |
3400 | } |
3401 | ||
94a175e1 | 3402 | IV |
f62ce20a | 3403 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3404 | { |
c4420975 | 3405 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3406 | PERL_UNUSED_CONTEXT; |
3407 | ||
94a175e1 | 3408 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3409 | } |
3410 | ||
3411 | Off_t | |
f62ce20a | 3412 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3413 | { |
c4420975 | 3414 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3415 | PERL_UNUSED_CONTEXT; |
3416 | ||
94a175e1 | 3417 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3418 | } |
3419 | ||
3420 | IV | |
f62ce20a | 3421 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3422 | { |
c4420975 | 3423 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3424 | PERL_UNUSED_CONTEXT; |
3425 | ||
14a5cf38 JH |
3426 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3427 | return PerlSIO_fflush(stdio); | |
3428 | } | |
3429 | else { | |
6f207bd3 | 3430 | NOOP; |
88b61e10 | 3431 | #if 0 |
14a5cf38 JH |
3432 | /* |
3433 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3434 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3435 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3436 | * layer read-to-read |
14a5cf38 JH |
3437 | */ |
3438 | /* | |
71200d45 | 3439 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3440 | */ |
4ee39169 | 3441 | dSAVE_ERRNO; |
14a5cf38 | 3442 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3443 | RESTORE_ERRNO; |
88b61e10 | 3444 | #endif |
14a5cf38 JH |
3445 | } |
3446 | return 0; | |
9e353e3b NIS |
3447 | } |
3448 | ||
3449 | IV | |
f62ce20a | 3450 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3451 | { |
96a5add6 AL |
3452 | PERL_UNUSED_CONTEXT; |
3453 | ||
14a5cf38 | 3454 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3455 | } |
3456 | ||
3457 | IV | |
f62ce20a | 3458 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3459 | { |
96a5add6 AL |
3460 | PERL_UNUSED_CONTEXT; |
3461 | ||
263df5f1 | 3462 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3463 | } |
3464 | ||
3465 | void | |
f62ce20a | 3466 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3467 | { |
96a5add6 AL |
3468 | PERL_UNUSED_CONTEXT; |
3469 | ||
14a5cf38 | 3470 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3471 | } |
3472 | ||
3473 | void | |
f62ce20a | 3474 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3475 | { |
96a5add6 AL |
3476 | PERL_UNUSED_CONTEXT; |
3477 | ||
9e353e3b | 3478 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3479 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3480 | #else |
bd61b366 | 3481 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3482 | #endif |
3483 | } | |
3484 | ||
3485 | #ifdef FILE_base | |
3486 | STDCHAR * | |
f62ce20a | 3487 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3488 | { |
c4420975 | 3489 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3490 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3491 | } |
3492 | ||
3493 | Size_t | |
f62ce20a | 3494 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3495 | { |
c4420975 | 3496 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3497 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3498 | } |
3499 | #endif | |
3500 | ||
3501 | #ifdef USE_STDIO_PTR | |
3502 | STDCHAR * | |
f62ce20a | 3503 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3504 | { |
c4420975 | 3505 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3506 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3507 | } |
3508 | ||
3509 | SSize_t | |
f62ce20a | 3510 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3511 | { |
c4420975 | 3512 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3513 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3514 | } |
3515 | ||
3516 | void | |
f62ce20a | 3517 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3518 | { |
c4420975 | 3519 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3520 | if (ptr != NULL) { |
9e353e3b | 3521 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3522 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3523 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3524 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3525 | #endif |
3526 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3527 | /* |
71200d45 | 3528 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3529 | */ |
3530 | return; | |
9e353e3b | 3531 | #endif |
22569500 | 3532 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3533 | PerlProc_abort(); |
22569500 | 3534 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3535 | } |
3536 | /* | |
71200d45 | 3537 | * Now (or only) set cnt |
14a5cf38 | 3538 | */ |
9e353e3b | 3539 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3540 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3541 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3542 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3543 | PerlSIO_set_ptr(stdio, |
3544 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3545 | cnt)); | |
22569500 | 3546 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3547 | PerlProc_abort(); |
22569500 NIS |
3548 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3549 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3550 | } |
3551 | ||
93679785 | 3552 | |
9e353e3b NIS |
3553 | #endif |
3554 | ||
93679785 NIS |
3555 | IV |
3556 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3557 | { | |
abf9167d | 3558 | FILE * stdio; |
93679785 | 3559 | int c; |
96a5add6 | 3560 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3561 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3562 | return -1; | |
3563 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3564 | |
93679785 NIS |
3565 | /* |
3566 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3567 | */ | |
3568 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3569 | if (PerlSIO_fflush(stdio) != 0) | |
3570 | return EOF; | |
3571 | } | |
f3be3723 BL |
3572 | for (;;) { |
3573 | c = PerlSIO_fgetc(stdio); | |
3574 | if (c != EOF) | |
3575 | break; | |
3576 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3577 | return EOF; | |
abf9167d DM |
3578 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3579 | return -1; | |
f3be3723 BL |
3580 | SETERRNO(0,0); |
3581 | } | |
93679785 NIS |
3582 | |
3583 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3584 | |
3585 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3586 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3587 | /* Fake ungetc() to the real buffer in case system's ungetc |
3588 | goes elsewhere | |
3589 | */ | |
3590 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3591 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3592 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3593 | if (ptr == base+1) { | |
3594 | *--ptr = (STDCHAR) c; | |
3595 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3596 | if (PerlSIO_feof(stdio)) | |
3597 | PerlSIO_clearerr(stdio); | |
3598 | return 0; | |
3599 | } | |
3600 | } | |
313e59c8 NIS |
3601 | else |
3602 | #endif | |
3603 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3604 | STDCHAR ch = c; |
3605 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3606 | return 0; | |
3607 | } | |
3608 | } | |
93679785 NIS |
3609 | #endif |
3610 | ||
3611 | #if defined(VMS) | |
3612 | /* An ungetc()d char is handled separately from the regular | |
3613 | * buffer, so we stuff it in the buffer ourselves. | |
3614 | * Should never get called as should hit code above | |
3615 | */ | |
bad9695d NIS |
3616 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3617 | (*stdio)->_cnt++; | |
93679785 NIS |
3618 | #else |
3619 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3620 | using ungetc(). |
93679785 NIS |
3621 | */ |
3622 | if (PerlSIO_ungetc(c, stdio) != c) | |
3623 | return EOF; | |
3624 | #endif | |
3625 | return 0; | |
3626 | } | |
3627 | ||
3628 | ||
3629 | ||
27da23d5 | 3630 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3631 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3632 | "stdio", |
3633 | sizeof(PerlIOStdio), | |
86e05cf2 | 3634 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3635 | PerlIOStdio_pushed, |
2376d97d | 3636 | PerlIOBase_popped, |
14a5cf38 | 3637 | PerlIOStdio_open, |
86e05cf2 | 3638 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3639 | NULL, |
3640 | PerlIOStdio_fileno, | |
71200d45 | 3641 | PerlIOStdio_dup, |
14a5cf38 JH |
3642 | PerlIOStdio_read, |
3643 | PerlIOStdio_unread, | |
3644 | PerlIOStdio_write, | |
3645 | PerlIOStdio_seek, | |
3646 | PerlIOStdio_tell, | |
3647 | PerlIOStdio_close, | |
3648 | PerlIOStdio_flush, | |
3649 | PerlIOStdio_fill, | |
3650 | PerlIOStdio_eof, | |
3651 | PerlIOStdio_error, | |
3652 | PerlIOStdio_clearerr, | |
3653 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3654 | #ifdef FILE_base |
14a5cf38 JH |
3655 | PerlIOStdio_get_base, |
3656 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3657 | #else |
14a5cf38 JH |
3658 | NULL, |
3659 | NULL, | |
9e353e3b NIS |
3660 | #endif |
3661 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3662 | PerlIOStdio_get_ptr, |
3663 | PerlIOStdio_get_cnt, | |
15b61c98 | 3664 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3665 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3666 | # else |
3667 | NULL, | |
3668 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3669 | #else | |
3670 | NULL, | |
14a5cf38 JH |
3671 | NULL, |
3672 | NULL, | |
15b61c98 | 3673 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3674 | }; |
3675 | ||
b9d6bf13 JH |
3676 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3677 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3678 | FILE * |
81428673 | 3679 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3680 | { |
e87a358a | 3681 | dTHX; |
81428673 NIS |
3682 | FILE *stdio = NULL; |
3683 | if (PerlIOValid(f)) { | |
3684 | char buf[8]; | |
375ed12a JH |
3685 | int fd = PerlIO_fileno(f); |
3686 | if (fd < 0) { | |
3687 | return NULL; | |
3688 | } | |
81428673 NIS |
3689 | PerlIO_flush(f); |
3690 | if (!mode || !*mode) { | |
3691 | mode = PerlIO_modestr(f, buf); | |
3692 | } | |
3693 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3694 | if (stdio) { | |
3695 | PerlIOl *l = *f; | |
9f75cc58 | 3696 | PerlIO *f2; |
81428673 NIS |
3697 | /* De-link any lower layers so new :stdio sticks */ |
3698 | *f = NULL; | |
a0714e2c | 3699 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3700 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3701 | s->stdio = stdio; |
6b54a403 | 3702 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3703 | /* Link previous lower layers under new one */ |
3704 | *PerlIONext(f) = l; | |
3705 | } | |
3706 | else { | |
3707 | /* restore layers list */ | |
3708 | *f = l; | |
3709 | } | |
a33cf58c | 3710 | } |
14a5cf38 JH |
3711 | } |
3712 | return stdio; | |
9e353e3b NIS |
3713 | } |
3714 | ||
81428673 | 3715 | |
9e353e3b NIS |
3716 | FILE * |
3717 | PerlIO_findFILE(PerlIO *f) | |
3718 | { | |
14a5cf38 | 3719 | PerlIOl *l = *f; |
bbbc33d0 | 3720 | FILE *stdio; |
14a5cf38 JH |
3721 | while (l) { |
3722 | if (l->tab == &PerlIO_stdio) { | |
3723 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3724 | return s->stdio; | |
3725 | } | |
3726 | l = *PerlIONext(&l); | |
f7e7eb72 | 3727 | } |
4b069b44 | 3728 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3729 | /* However, we're not really exporting a FILE * to someone else (who |
3730 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3731 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3732 | descriptor. We have to do this, because if the loop above returns you |
3733 | the FILE *, then *it* didn't increase any reference count. So there's | |
3734 | only one way to be consistent. */ | |
3735 | stdio = PerlIO_exportFILE(f, NULL); | |
3736 | if (stdio) { | |
3737 | const int fd = fileno(stdio); | |
3738 | if (fd >= 0) | |
3739 | PerlIOUnix_refcnt_dec(fd); | |
3740 | } | |
3741 | return stdio; | |
9e353e3b NIS |
3742 | } |
3743 | ||
b9d6bf13 | 3744 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3745 | void |
3746 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3747 | { | |
27da23d5 | 3748 | dVAR; |
22569500 NIS |
3749 | PerlIOl *l; |
3750 | while ((l = *p)) { | |
3751 | if (l->tab == &PerlIO_stdio) { | |
3752 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3753 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3754 | const int fd = fileno(f); |
3755 | if (fd >= 0) | |
3756 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3757 | { |
3758 | dTHX; | |
3759 | PerlIO_pop(aTHX_ p); | |
3760 | } | |
22569500 NIS |
3761 | return; |
3762 | } | |
3763 | } | |
3764 | p = PerlIONext(p); | |
3765 | } | |
3766 | return; | |
9e353e3b NIS |
3767 | } |
3768 | ||
3769 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3770 | /* |
71200d45 | 3771 | * perlio buffer layer |
14a5cf38 | 3772 | */ |
9e353e3b | 3773 | |
5e2ab84b | 3774 | IV |
2dc2558e | 3775 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3776 | { |
14a5cf38 | 3777 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3778 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3779 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3780 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3781 | } | |
4b069b44 | 3782 | if (*PerlIONext(f)) { |
de009b76 | 3783 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3784 | if (posn != (Off_t) - 1) { |
3785 | b->posn = posn; | |
3786 | } | |
14a5cf38 | 3787 | } |
2dc2558e | 3788 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3789 | } |
3790 | ||
9e353e3b | 3791 | PerlIO * |
14a5cf38 JH |
3792 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3793 | IV n, const char *mode, int fd, int imode, int perm, | |
3794 | PerlIO *f, int narg, SV **args) | |
3795 | { | |
04892f78 | 3796 | if (PerlIOValid(f)) { |
14a5cf38 | 3797 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3798 | PerlIO_funcs *tab = |
3799 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3800 | if (tab && tab->Open) | |
3801 | next = | |
3802 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3803 | next, narg, args); | |
2dc2558e | 3804 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3805 | return NULL; |
3806 | } | |
3807 | } | |
3808 | else { | |
04892f78 | 3809 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3810 | int init = 0; |
3b6c1aba | 3811 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3812 | init = 1; |
3813 | /* | |
71200d45 | 3814 | * mode++; |
14a5cf38 JH |
3815 | */ |
3816 | } | |
67363c0d JH |
3817 | if (tab && tab->Open) |
3818 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3819 | f, narg, args); | |
3820 | else | |
3821 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3822 | if (f) { |
22569500 | 3823 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3824 | /* |
3825 | * if push fails during open, open fails. close will pop us. | |
3826 | */ | |
3827 | PerlIO_close (f); | |
3828 | return NULL; | |
3829 | } else { | |
3830 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3831 | if (init && fd == 2) { |
3832 | /* | |
3833 | * Initial stderr is unbuffered | |
3834 | */ | |
3835 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3836 | } | |
23b84778 IZ |
3837 | #ifdef PERLIO_USING_CRLF |
3838 | # ifdef PERLIO_IS_BINMODE_FD | |
3839 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3840 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3841 | else |
3842 | # endif | |
3843 | /* | |
3844 | * do something about failing setmode()? --jhi | |
3845 | */ | |
3846 | PerlLIO_setmode(fd, O_BINARY); | |
3847 | #endif | |
8c8488cd | 3848 | #ifdef VMS |
8c8488cd CB |
3849 | /* Enable line buffering with record-oriented regular files |
3850 | * so we don't introduce an extraneous record boundary when | |
3851 | * the buffer fills up. | |
3852 | */ | |
3853 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3854 | Stat_t st; | |
3855 | if (PerlLIO_fstat(fd, &st) == 0 | |
3856 | && S_ISREG(st.st_mode) | |
3857 | && (st.st_fab_rfm == FAB$C_VAR | |
3858 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3859 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3860 | } | |
3861 | } | |
3862 | #endif | |
14a5cf38 JH |
3863 | } |
3864 | } | |
ee518936 | 3865 | } |
14a5cf38 | 3866 | return f; |
9e353e3b NIS |
3867 | } |
3868 | ||
14a5cf38 JH |
3869 | /* |
3870 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3871 | * read or write state. For write state, we put the postponed data through |
3872 | * the next layers. For read state, we seek() the next layers to the | |
3873 | * offset given by current position in the buffer, and discard the buffer | |
3874 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3875 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3876 | */ |
9e353e3b | 3877 | IV |
f62ce20a | 3878 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3879 | { |
dcda55fc | 3880 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3881 | int code = 0; |
04892f78 | 3882 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3883 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3884 | /* | |
71200d45 | 3885 | * write() the buffer |
14a5cf38 | 3886 | */ |
de009b76 AL |
3887 | const STDCHAR *buf = b->buf; |
3888 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3889 | while (p < b->ptr) { |
3890 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3891 | if (count > 0) { | |
3892 | p += count; | |
3893 | } | |
3894 | else if (count < 0 || PerlIO_error(n)) { | |
3895 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3896 | code = -1; | |
3897 | break; | |
3898 | } | |
3899 | } | |
3900 | b->posn += (p - buf); | |
3901 | } | |
3902 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3903 | STDCHAR *buf = PerlIO_get_base(f); | |
3904 | /* | |
71200d45 | 3905 | * Note position change |
14a5cf38 JH |
3906 | */ |
3907 | b->posn += (b->ptr - buf); | |
3908 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3909 | /* We did not consume all of it - try and seek downstream to |
3910 | our logical position | |
14a5cf38 | 3911 | */ |
4b069b44 | 3912 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3913 | /* Reload n as some layers may pop themselves on seek */ |
3914 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3915 | } |
ba5c3fe9 | 3916 | else { |
4b069b44 NIS |
3917 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3918 | data is lost for good - so return saying "ok" having undone | |
3919 | the position adjust | |
3920 | */ | |
3921 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3922 | return code; |
3923 | } | |
14a5cf38 JH |
3924 | } |
3925 | } | |
3926 | b->ptr = b->end = b->buf; | |
3927 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3928 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3929 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3930 | code = -1; |
3931 | return code; | |
6f9d8c32 NIS |
3932 | } |
3933 | ||
93c2c2ec IZ |
3934 | /* This discards the content of the buffer after b->ptr, and rereads |
3935 | * the buffer from the position off in the layer downstream; here off | |
3936 | * is at offset corresponding to b->ptr - b->buf. | |
3937 | */ | |
06da4f11 | 3938 | IV |
f62ce20a | 3939 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3940 | { |
dcda55fc | 3941 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3942 | PerlIO *n = PerlIONext(f); |
3943 | SSize_t avail; | |
3944 | /* | |
4b069b44 NIS |
3945 | * Down-stream flush is defined not to loose read data so is harmless. |
3946 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3947 | */ |
93c2c2ec | 3948 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3949 | return -1; |
3950 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3951 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3952 | |
3953 | if (!b->buf) | |
22569500 | 3954 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3955 | |
0f0eef27 | 3956 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3957 | |
14a5cf38 | 3958 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3959 | |
3960 | if (!PerlIOValid(n)) { | |
3961 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3962 | return -1; | |
3963 | } | |
3964 | ||
14a5cf38 JH |
3965 | if (PerlIO_fast_gets(n)) { |
3966 | /* | |
04892f78 | 3967 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3968 | * ->Read() because that will loop till it gets what we asked for |
3969 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3970 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3971 | */ |
3972 | avail = PerlIO_get_cnt(n); | |
3973 | if (avail <= 0) { | |
3974 | avail = PerlIO_fill(n); | |
3975 | if (avail == 0) | |
3976 | avail = PerlIO_get_cnt(n); | |
3977 | else { | |
3978 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3979 | avail = 0; | |
3980 | } | |
3981 | } | |
3982 | if (avail > 0) { | |
3983 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3984 | const SSize_t cnt = avail; |
eb160463 | 3985 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3986 | avail = b->bufsiz; |
3987 | Copy(ptr, b->buf, avail, STDCHAR); | |
3988 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3989 | } | |
3990 | } | |
3991 | else { | |
3992 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3993 | } | |
3994 | if (avail <= 0) { | |
3995 | if (avail == 0) | |
3996 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3997 | else | |
3998 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3999 | return -1; | |
4000 | } | |
4001 | b->end = b->buf + avail; | |
4002 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4003 | return 0; | |
06da4f11 NIS |
4004 | } |
4005 | ||
6f9d8c32 | 4006 | SSize_t |
f62ce20a | 4007 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4008 | { |
04892f78 | 4009 | if (PerlIOValid(f)) { |
dcda55fc | 4010 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4011 | if (!b->ptr) |
4012 | PerlIO_get_base(f); | |
f62ce20a | 4013 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4014 | } |
4015 | return 0; | |
6f9d8c32 NIS |
4016 | } |
4017 | ||
9e353e3b | 4018 | SSize_t |
f62ce20a | 4019 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4020 | { |
14a5cf38 | 4021 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4022 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4023 | SSize_t unread = 0; |
4024 | SSize_t avail; | |
4025 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4026 | PerlIO_flush(f); | |
4027 | if (!b->buf) | |
4028 | PerlIO_get_base(f); | |
4029 | if (b->buf) { | |
4030 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4031 | /* | |
4032 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4033 | * which have been read back to buffer start |
14a5cf38 JH |
4034 | */ |
4035 | avail = (b->ptr - b->buf); | |
4036 | } | |
4037 | else { | |
4038 | /* | |
4039 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4040 | * unread |
14a5cf38 JH |
4041 | */ |
4042 | avail = b->bufsiz; | |
4043 | b->end = b->buf + avail; | |
4044 | b->ptr = b->end; | |
4045 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4046 | /* | |
71200d45 | 4047 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4048 | */ |
4049 | b->posn -= b->bufsiz; | |
4050 | } | |
94e529cc | 4051 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4052 | /* |
71200d45 | 4053 | * If we have space for more than count, just move count |
14a5cf38 JH |
4054 | */ |
4055 | avail = count; | |
4056 | } | |
4057 | if (avail > 0) { | |
4058 | b->ptr -= avail; | |
4059 | buf -= avail; | |
4060 | /* | |
4061 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4062 | * there |
14a5cf38 JH |
4063 | */ |
4064 | if (buf != b->ptr) { | |
4065 | Copy(buf, b->ptr, avail, STDCHAR); | |
4066 | } | |
4067 | count -= avail; | |
4068 | unread += avail; | |
4069 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4070 | } | |
4071 | } | |
93679785 NIS |
4072 | if (count > 0) { |
4073 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4074 | } | |
14a5cf38 | 4075 | return unread; |
760ac839 LW |
4076 | } |
4077 | ||
9e353e3b | 4078 | SSize_t |
f62ce20a | 4079 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4080 | { |
de009b76 | 4081 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4082 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4083 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4084 | Size_t written = 0; |
4085 | if (!b->buf) | |
4086 | PerlIO_get_base(f); | |
4087 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4088 | return 0; | |
0678cb22 NIS |
4089 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4090 | if (PerlIO_flush(f) != 0) { | |
4091 | return 0; | |
4092 | } | |
4093 | } | |
ee56a6b9 CS |
4094 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4095 | flushptr = buf + count; | |
4096 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4097 | --flushptr; | |
4098 | } | |
14a5cf38 JH |
4099 | while (count > 0) { |
4100 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4101 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4102 | avail = count; |
ee56a6b9 CS |
4103 | if (flushptr > buf && flushptr <= buf + avail) |
4104 | avail = flushptr - buf; | |
14a5cf38 | 4105 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4106 | if (avail) { |
4107 | Copy(buf, b->ptr, avail, STDCHAR); | |
4108 | count -= avail; | |
4109 | buf += avail; | |
4110 | written += avail; | |
4111 | b->ptr += avail; | |
4112 | if (buf == flushptr) | |
4113 | PerlIO_flush(f); | |
14a5cf38 JH |
4114 | } |
4115 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4116 | if (PerlIO_flush(f) == -1) |
4117 | return -1; | |
14a5cf38 JH |
4118 | } |
4119 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4120 | PerlIO_flush(f); | |
4121 | return written; | |
9e353e3b NIS |
4122 | } |
4123 | ||
94a175e1 | 4124 | IV |
f62ce20a | 4125 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4126 | { |
14a5cf38 JH |
4127 | IV code; |
4128 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4129 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4130 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4131 | if (code == 0) { | |
de009b76 | 4132 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4133 | b->posn = PerlIO_tell(PerlIONext(f)); |
4134 | } | |
9e353e3b | 4135 | } |
14a5cf38 | 4136 | return code; |
9e353e3b NIS |
4137 | } |
4138 | ||
4139 | Off_t | |
f62ce20a | 4140 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4141 | { |
dcda55fc | 4142 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4143 | /* |
71200d45 | 4144 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4145 | */ |
4146 | Off_t posn = b->posn; | |
37725cdc | 4147 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4148 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4149 | #if 1 | |
4150 | /* As O_APPEND files are normally shared in some sense it is better | |
4151 | to flush : | |
4152 | */ | |
4153 | PerlIO_flush(f); | |
4154 | #else | |
37725cdc | 4155 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4156 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4157 | #endif | |
4158 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4159 | } | |
14a5cf38 JH |
4160 | if (b->buf) { |
4161 | /* | |
71200d45 | 4162 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4163 | */ |
4164 | posn += (b->ptr - b->buf); | |
4165 | } | |
4166 | return posn; | |
9e353e3b NIS |
4167 | } |
4168 | ||
4169 | IV | |
44798d05 NIS |
4170 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4171 | { | |
de009b76 AL |
4172 | const IV code = PerlIOBase_popped(aTHX_ f); |
4173 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4174 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4175 | Safefree(b->buf); | |
4176 | } | |
dcda55fc | 4177 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4178 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4179 | return code; | |
4180 | } | |
4181 | ||
4182 | IV | |
f62ce20a | 4183 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4184 | { |
de009b76 AL |
4185 | const IV code = PerlIOBase_close(aTHX_ f); |
4186 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4187 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4188 | Safefree(b->buf); |
14a5cf38 | 4189 | } |
dcda55fc | 4190 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4191 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4192 | return code; | |
760ac839 LW |
4193 | } |
4194 | ||
9e353e3b | 4195 | STDCHAR * |
f62ce20a | 4196 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4197 | { |
dcda55fc | 4198 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4199 | if (!b->buf) |
4200 | PerlIO_get_base(f); | |
4201 | return b->ptr; | |
9e353e3b NIS |
4202 | } |
4203 | ||
05d1247b | 4204 | SSize_t |
f62ce20a | 4205 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4206 | { |
dcda55fc | 4207 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4208 | if (!b->buf) |
4209 | PerlIO_get_base(f); | |
4210 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4211 | return (b->end - b->ptr); | |
4212 | return 0; | |
9e353e3b NIS |
4213 | } |
4214 | ||
4215 | STDCHAR * | |
f62ce20a | 4216 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4217 | { |
dcda55fc | 4218 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4219 | PERL_UNUSED_CONTEXT; |
4220 | ||
14a5cf38 JH |
4221 | if (!b->buf) { |
4222 | if (!b->bufsiz) | |
1810cd7c | 4223 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4224 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4225 | if (!b->buf) { |
4226 | b->buf = (STDCHAR *) & b->oneword; | |
4227 | b->bufsiz = sizeof(b->oneword); | |
4228 | } | |
dcda55fc | 4229 | b->end = b->ptr = b->buf; |
06da4f11 | 4230 | } |
14a5cf38 | 4231 | return b->buf; |
9e353e3b NIS |
4232 | } |
4233 | ||
4234 | Size_t | |
f62ce20a | 4235 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4236 | { |
dcda55fc | 4237 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4238 | if (!b->buf) |
4239 | PerlIO_get_base(f); | |
4240 | return (b->end - b->buf); | |
9e353e3b NIS |
4241 | } |
4242 | ||
4243 | void | |
f62ce20a | 4244 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4245 | { |
dcda55fc | 4246 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4247 | #ifndef DEBUGGING |
4248 | PERL_UNUSED_ARG(cnt); | |
4249 | #endif | |
14a5cf38 JH |
4250 | if (!b->buf) |
4251 | PerlIO_get_base(f); | |
4252 | b->ptr = ptr; | |
b727803b RGS |
4253 | assert(PerlIO_get_cnt(f) == cnt); |
4254 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4255 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4256 | } |
4257 | ||
71200d45 | 4258 | PerlIO * |
ecdeb87c | 4259 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4260 | { |
ecdeb87c | 4261 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4262 | } |
4263 | ||
4264 | ||
4265 | ||
27da23d5 | 4266 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4267 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4268 | "perlio", |
4269 | sizeof(PerlIOBuf), | |
86e05cf2 | 4270 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4271 | PerlIOBuf_pushed, |
44798d05 | 4272 | PerlIOBuf_popped, |
14a5cf38 | 4273 | PerlIOBuf_open, |
86e05cf2 | 4274 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4275 | NULL, |
4276 | PerlIOBase_fileno, | |
71200d45 | 4277 | PerlIOBuf_dup, |
14a5cf38 JH |
4278 | PerlIOBuf_read, |
4279 | PerlIOBuf_unread, | |
4280 | PerlIOBuf_write, | |
4281 | PerlIOBuf_seek, | |
4282 | PerlIOBuf_tell, | |
4283 | PerlIOBuf_close, | |
4284 | PerlIOBuf_flush, | |
4285 | PerlIOBuf_fill, | |
4286 | PerlIOBase_eof, | |
4287 | PerlIOBase_error, | |
4288 | PerlIOBase_clearerr, | |
4289 | PerlIOBase_setlinebuf, | |
4290 | PerlIOBuf_get_base, | |
4291 | PerlIOBuf_bufsiz, | |
4292 | PerlIOBuf_get_ptr, | |
4293 | PerlIOBuf_get_cnt, | |
4294 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4295 | }; |
4296 | ||
66ecd56b | 4297 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4298 | /* |
71200d45 | 4299 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4300 | */ |
5e2ab84b NIS |
4301 | |
4302 | IV | |
f62ce20a | 4303 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4304 | { |
14a5cf38 | 4305 | /* |
71200d45 | 4306 | * Should never happen |
14a5cf38 JH |
4307 | */ |
4308 | PerlIO_flush(f); | |
4309 | return 0; | |
5e2ab84b NIS |
4310 | } |
4311 | ||
4312 | IV | |
f62ce20a | 4313 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4314 | { |
14a5cf38 | 4315 | /* |
71200d45 | 4316 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4317 | */ |
4318 | PerlIO_flush(f); | |
4319 | return PerlIO_close(f); | |
5e2ab84b NIS |
4320 | } |
4321 | ||
94a175e1 | 4322 | IV |
f62ce20a | 4323 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4324 | { |
14a5cf38 | 4325 | /* |
71200d45 | 4326 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4327 | */ |
4328 | PerlIO_flush(f); | |
4329 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4330 | } |
4331 | ||
4332 | ||
4333 | IV | |
f62ce20a | 4334 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4335 | { |
dcda55fc | 4336 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4337 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4338 | Safefree(b->buf); |
14a5cf38 JH |
4339 | b->buf = NULL; |
4340 | } | |
4341 | PerlIO_pop(aTHX_ f); | |
4342 | return 0; | |
5e2ab84b NIS |
4343 | } |
4344 | ||
4345 | void | |
f62ce20a | 4346 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4347 | { |
14a5cf38 JH |
4348 | if (cnt <= 0) { |
4349 | PerlIO_flush(f); | |
4350 | } | |
4351 | else { | |
f62ce20a | 4352 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4353 | } |
5e2ab84b NIS |
4354 | } |
4355 | ||
4356 | IV | |
2dc2558e | 4357 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4358 | { |
de009b76 | 4359 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4360 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4361 | /* |
71200d45 NIS |
4362 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4363 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4364 | */ |
4365 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4366 | (PerlIOBase(PerlIONext(f))-> | |
4367 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4368 | return code; | |
5e2ab84b NIS |
4369 | } |
4370 | ||
4371 | SSize_t | |
f62ce20a | 4372 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4373 | { |
14a5cf38 JH |
4374 | SSize_t avail = PerlIO_get_cnt(f); |
4375 | SSize_t got = 0; | |
94e529cc | 4376 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4377 | avail = count; |
4378 | if (avail > 0) | |
f62ce20a | 4379 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4380 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4381 | const SSize_t more = |
14a5cf38 JH |
4382 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4383 | if (more >= 0 || got == 0) | |
4384 | got += more; | |
4385 | } | |
4386 | return got; | |
5e2ab84b NIS |
4387 | } |
4388 | ||
27da23d5 | 4389 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4390 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4391 | "pending", |
4392 | sizeof(PerlIOBuf), | |
86e05cf2 | 4393 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4394 | PerlIOPending_pushed, |
44798d05 | 4395 | PerlIOBuf_popped, |
14a5cf38 | 4396 | NULL, |
86e05cf2 | 4397 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4398 | NULL, |
4399 | PerlIOBase_fileno, | |
71200d45 | 4400 | PerlIOBuf_dup, |
14a5cf38 JH |
4401 | PerlIOPending_read, |
4402 | PerlIOBuf_unread, | |
4403 | PerlIOBuf_write, | |
4404 | PerlIOPending_seek, | |
4405 | PerlIOBuf_tell, | |
4406 | PerlIOPending_close, | |
4407 | PerlIOPending_flush, | |
4408 | PerlIOPending_fill, | |
4409 | PerlIOBase_eof, | |
4410 | PerlIOBase_error, | |
4411 | PerlIOBase_clearerr, | |
4412 | PerlIOBase_setlinebuf, | |
4413 | PerlIOBuf_get_base, | |
4414 | PerlIOBuf_bufsiz, | |
4415 | PerlIOBuf_get_ptr, | |
4416 | PerlIOBuf_get_cnt, | |
4417 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4418 | }; |
4419 | ||
4420 | ||
4421 | ||
4422 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4423 | /* |
4424 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4425 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4426 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4427 | * |
4428 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4429 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4430 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4431 | * that it ends at c->nl; these two cases can be distinguished by | |
4432 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4433 | * _unread() and _flush() calls. | |
4434 | * It only matters for read operations. | |
66ecd56b NIS |
4435 | */ |
4436 | ||
14a5cf38 | 4437 | typedef struct { |
22569500 NIS |
4438 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4439 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4440 | * buffer */ |
99efab12 NIS |
4441 | } PerlIOCrlf; |
4442 | ||
ff1e3883 JD |
4443 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4444 | * Otherwise the :crlf layer would always revert back to | |
4445 | * raw mode. | |
4446 | */ | |
4447 | static void | |
4448 | S_inherit_utf8_flag(PerlIO *f) | |
4449 | { | |
4450 | PerlIO *g = PerlIONext(f); | |
4451 | if (PerlIOValid(g)) { | |
4452 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4453 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4454 | } | |
4455 | } | |
4456 | } | |
4457 | ||
f5b9d040 | 4458 | IV |
2dc2558e | 4459 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4460 | { |
14a5cf38 JH |
4461 | IV code; |
4462 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4463 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4464 | #if 0 |
14a5cf38 | 4465 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4466 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4467 | PerlIOBase(f)->flags); |
5e2ab84b | 4468 | #endif |
8229d19f | 4469 | { |
5da08ab0 LT |
4470 | /* If the old top layer is a CRLF layer, reactivate it (if |
4471 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4472 | PerlIO *g = PerlIONext(f); |
7826b36f | 4473 | if (PerlIOValid(g)) { |
8229d19f JH |
4474 | PerlIOl *b = PerlIOBase(g); |
4475 | if (b && b->tab == &PerlIO_crlf) { | |
4476 | if (!(b->flags & PERLIO_F_CRLF)) | |
4477 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4478 | S_inherit_utf8_flag(g); |
8229d19f JH |
4479 | PerlIO_pop(aTHX_ f); |
4480 | return code; | |
7826b36f | 4481 | } |
8229d19f JH |
4482 | } |
4483 | } | |
ff1e3883 | 4484 | S_inherit_utf8_flag(f); |
14a5cf38 | 4485 | return code; |
f5b9d040 NIS |
4486 | } |
4487 | ||
4488 | ||
99efab12 | 4489 | SSize_t |
f62ce20a | 4490 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4491 | { |
dcda55fc | 4492 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4493 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4494 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4495 | c->nl = NULL; |
4496 | } | |
4497 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4498 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4499 | else { |
4500 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4501 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4502 | SSize_t unread = 0; | |
4503 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4504 | PerlIO_flush(f); | |
4505 | if (!b->buf) | |
4506 | PerlIO_get_base(f); | |
4507 | if (b->buf) { | |
4508 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4509 | b->end = b->ptr = b->buf + b->bufsiz; | |
4510 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4511 | b->posn -= b->bufsiz; | |
4512 | } | |
4513 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4514 | const int ch = *--buf; |
14a5cf38 JH |
4515 | if (ch == '\n') { |
4516 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4517 | *--(b->ptr) = NATIVE_0xa; |
4518 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4519 | unread++; |
4520 | count--; | |
4521 | } | |
4522 | else { | |
93c2c2ec | 4523 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4524 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4525 | '\r' */ | |
93c2c2ec IZ |
4526 | unread++; |
4527 | count--; | |
14a5cf38 JH |
4528 | } |
4529 | } | |
4530 | else { | |
4531 | *--(b->ptr) = ch; | |
4532 | unread++; | |
4533 | count--; | |
4534 | } | |
4535 | } | |
4536 | } | |
ec1da995 LT |
4537 | if (count > 0) |
4538 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4539 | return unread; |
4540 | } | |
99efab12 NIS |
4541 | } |
4542 | ||
93c2c2ec | 4543 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4544 | SSize_t |
f62ce20a | 4545 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4546 | { |
dcda55fc | 4547 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4548 | if (!b->buf) |
4549 | PerlIO_get_base(f); | |
4550 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4551 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4552 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4553 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4554 | scan: |
76e6dc3a | 4555 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4556 | nl++; |
76e6dc3a | 4557 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4558 | test: |
4559 | if (nl + 1 < b->end) { | |
76e6dc3a | 4560 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4561 | *nl = '\n'; |
4562 | c->nl = nl; | |
4563 | } | |
4564 | else { | |
4565 | /* | |
71200d45 | 4566 | * Not CR,LF but just CR |
14a5cf38 JH |
4567 | */ |
4568 | nl++; | |
4569 | goto scan; | |
4570 | } | |
4571 | } | |
4572 | else { | |
4573 | /* | |
71200d45 | 4574 | * Blast - found CR as last char in buffer |
14a5cf38 | 4575 | */ |
e87a358a | 4576 | |
14a5cf38 JH |
4577 | if (b->ptr < nl) { |
4578 | /* | |
4579 | * They may not care, defer work as long as | |
71200d45 | 4580 | * possible |
14a5cf38 | 4581 | */ |
a0d1d361 | 4582 | c->nl = nl; |
14a5cf38 JH |
4583 | return (nl - b->ptr); |
4584 | } | |
4585 | else { | |
4586 | int code; | |
22569500 | 4587 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4588 | * flush() is concerned */ |
22569500 | 4589 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4590 | /* Note as we have moved buf up flush's |
4591 | posn += ptr-buf | |
4592 | will naturally make posn point at CR | |
4593 | */ | |
22569500 NIS |
4594 | b->bufsiz--; /* Buffer is thus smaller */ |
4595 | code = PerlIO_fill(f); /* Fetch some more */ | |
4596 | b->bufsiz++; /* Restore size for next time */ | |
4597 | b->buf--; /* Point at space */ | |
4598 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4599 | * off */ |
76e6dc3a | 4600 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4601 | if (code == 0) |
22569500 | 4602 | goto test; /* fill() call worked */ |
14a5cf38 | 4603 | /* |
71200d45 | 4604 | * CR at EOF - just fall through |
14a5cf38 | 4605 | */ |
a0d1d361 | 4606 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4607 | } |
4608 | } | |
4609 | } | |
4610 | } | |
4611 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4612 | } | |
4613 | return 0; | |
99efab12 NIS |
4614 | } |
4615 | ||
4616 | void | |
f62ce20a | 4617 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4618 | { |
dcda55fc AL |
4619 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4620 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4621 | if (!b->buf) |
4622 | PerlIO_get_base(f); | |
4623 | if (!ptr) { | |
a0d1d361 | 4624 | if (c->nl) { |
14a5cf38 | 4625 | ptr = c->nl + 1; |
76e6dc3a | 4626 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4627 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4628 | ptr--; |
4629 | } | |
4630 | } | |
14a5cf38 JH |
4631 | else { |
4632 | ptr = b->end; | |
14a5cf38 JH |
4633 | } |
4634 | ptr -= cnt; | |
4635 | } | |
4636 | else { | |
6f207bd3 | 4637 | NOOP; |
3b4bd3fd | 4638 | #if 0 |
14a5cf38 | 4639 | /* |
71200d45 | 4640 | * Test code - delete when it works ... |
14a5cf38 | 4641 | */ |
3b4bd3fd | 4642 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4643 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4644 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4645 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4646 | chk--; |
22569500 | 4647 | } |
14a5cf38 JH |
4648 | chk -= cnt; |
4649 | ||
a0d1d361 | 4650 | if (ptr != chk ) { |
99ef548b | 4651 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4652 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4653 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4654 | } |
99ef548b | 4655 | #endif |
14a5cf38 JH |
4656 | } |
4657 | if (c->nl) { | |
4658 | if (ptr > c->nl) { | |
4659 | /* | |
71200d45 | 4660 | * They have taken what we lied about |
14a5cf38 | 4661 | */ |
76e6dc3a | 4662 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4663 | c->nl = NULL; |
4664 | ptr++; | |
4665 | } | |
4666 | } | |
4667 | b->ptr = ptr; | |
4668 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4669 | } |
4670 | ||
4671 | SSize_t | |
f62ce20a | 4672 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4673 | { |
14a5cf38 | 4674 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4675 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4676 | else { |
dcda55fc | 4677 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4678 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4679 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4680 | if (!b->buf) |
4681 | PerlIO_get_base(f); | |
4682 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4683 | return 0; | |
4684 | while (buf < ebuf) { | |
dcda55fc | 4685 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4686 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4687 | while (buf < ebuf && b->ptr < eptr) { | |
4688 | if (*buf == '\n') { | |
4689 | if ((b->ptr + 2) > eptr) { | |
4690 | /* | |
71200d45 | 4691 | * Not room for both |
14a5cf38 JH |
4692 | */ |
4693 | PerlIO_flush(f); | |
4694 | break; | |
4695 | } | |
4696 | else { | |
76e6dc3a KW |
4697 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4698 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4699 | buf++; |
4700 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4701 | PerlIO_flush(f); | |
4702 | break; | |
4703 | } | |
4704 | } | |
4705 | } | |
4706 | else { | |
dcda55fc | 4707 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4708 | } |
4709 | if (b->ptr >= eptr) { | |
4710 | PerlIO_flush(f); | |
4711 | break; | |
4712 | } | |
4713 | } | |
4714 | } | |
4715 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4716 | PerlIO_flush(f); | |
4717 | return (buf - (STDCHAR *) vbuf); | |
4718 | } | |
99efab12 NIS |
4719 | } |
4720 | ||
4721 | IV | |
f62ce20a | 4722 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4723 | { |
dcda55fc | 4724 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4725 | if (c->nl) { |
76e6dc3a | 4726 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4727 | c->nl = NULL; |
4728 | } | |
f62ce20a | 4729 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4730 | } |
4731 | ||
86e05cf2 NIS |
4732 | IV |
4733 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4734 | { | |
4735 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4736 | /* In text mode - flush any pending stuff and flip it */ | |
4737 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4738 | #ifndef PERLIO_USING_CRLF | |
4739 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4740 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4741 | #endif |
4742 | } | |
4743 | return 0; | |
4744 | } | |
4745 | ||
27da23d5 | 4746 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4747 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4748 | "crlf", |
4749 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4750 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4751 | PerlIOCrlf_pushed, |
44798d05 | 4752 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4753 | PerlIOBuf_open, |
86e05cf2 | 4754 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4755 | NULL, |
4756 | PerlIOBase_fileno, | |
71200d45 | 4757 | PerlIOBuf_dup, |
de009b76 | 4758 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4759 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4760 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4761 | PerlIOBuf_seek, |
4762 | PerlIOBuf_tell, | |
4763 | PerlIOBuf_close, | |
4764 | PerlIOCrlf_flush, | |
4765 | PerlIOBuf_fill, | |
4766 | PerlIOBase_eof, | |
4767 | PerlIOBase_error, | |
4768 | PerlIOBase_clearerr, | |
4769 | PerlIOBase_setlinebuf, | |
4770 | PerlIOBuf_get_base, | |
4771 | PerlIOBuf_bufsiz, | |
4772 | PerlIOBuf_get_ptr, | |
4773 | PerlIOCrlf_get_cnt, | |
4774 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4775 | }; |
4776 | ||
9e353e3b | 4777 | PerlIO * |
e87a358a | 4778 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4779 | { |
97aff369 | 4780 | dVAR; |
a1ea730d | 4781 | if (!PL_perlio) { |
14a5cf38 JH |
4782 | PerlIO_stdstreams(aTHX); |
4783 | } | |
303f2dc3 | 4784 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4785 | } |
4786 | ||
9e353e3b | 4787 | PerlIO * |
e87a358a | 4788 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4789 | { |
97aff369 | 4790 | dVAR; |
a1ea730d | 4791 | if (!PL_perlio) { |
14a5cf38 JH |
4792 | PerlIO_stdstreams(aTHX); |
4793 | } | |
303f2dc3 | 4794 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4795 | } |
4796 | ||
9e353e3b | 4797 | PerlIO * |
e87a358a | 4798 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4799 | { |
97aff369 | 4800 | dVAR; |
a1ea730d | 4801 | if (!PL_perlio) { |
14a5cf38 JH |
4802 | PerlIO_stdstreams(aTHX); |
4803 | } | |
303f2dc3 | 4804 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4805 | } |
4806 | ||
4807 | /*--------------------------------------------------------------------------------------*/ | |
4808 | ||
9e353e3b NIS |
4809 | char * |
4810 | PerlIO_getname(PerlIO *f, char *buf) | |
4811 | { | |
a15cef0c | 4812 | #ifdef VMS |
dbf7dff6 | 4813 | dTHX; |
73d840c0 | 4814 | char *name = NULL; |
7659f319 | 4815 | bool exported = FALSE; |
14a5cf38 | 4816 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4817 | if (!stdio) { |
4818 | stdio = PerlIO_exportFILE(f,0); | |
4819 | exported = TRUE; | |
4820 | } | |
4821 | if (stdio) { | |
14a5cf38 | 4822 | name = fgetname(stdio, buf); |
7659f319 CB |
4823 | if (exported) PerlIO_releaseFILE(f,stdio); |
4824 | } | |
73d840c0 | 4825 | return name; |
a15cef0c | 4826 | #else |
8772537c AL |
4827 | PERL_UNUSED_ARG(f); |
4828 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4829 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4830 | return NULL; |
a15cef0c | 4831 | #endif |
9e353e3b NIS |
4832 | } |
4833 | ||
4834 | ||
4835 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4836 | /* |
4837 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4838 | * terms of above |
14a5cf38 | 4839 | */ |
9e353e3b | 4840 | |
e87a358a NIS |
4841 | #undef PerlIO_fdopen |
4842 | PerlIO * | |
4843 | PerlIO_fdopen(int fd, const char *mode) | |
4844 | { | |
4845 | dTHX; | |
bd61b366 | 4846 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4847 | } |
4848 | ||
4849 | #undef PerlIO_open | |
4850 | PerlIO * | |
4851 | PerlIO_open(const char *path, const char *mode) | |
4852 | { | |
4853 | dTHX; | |
42d9b98d | 4854 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4855 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4856 | } |
4857 | ||
4858 | #undef Perlio_reopen | |
4859 | PerlIO * | |
4860 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4861 | { | |
4862 | dTHX; | |
42d9b98d | 4863 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4864 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4865 | } |
4866 | ||
9e353e3b | 4867 | #undef PerlIO_getc |
6f9d8c32 | 4868 | int |
9e353e3b | 4869 | PerlIO_getc(PerlIO *f) |
760ac839 | 4870 | { |
e87a358a | 4871 | dTHX; |
14a5cf38 | 4872 | STDCHAR buf[1]; |
de009b76 | 4873 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4874 | return (unsigned char) buf[0]; |
4875 | } | |
4876 | return EOF; | |
313ca112 NIS |
4877 | } |
4878 | ||
4879 | #undef PerlIO_ungetc | |
4880 | int | |
4881 | PerlIO_ungetc(PerlIO *f, int ch) | |
4882 | { | |
e87a358a | 4883 | dTHX; |
14a5cf38 JH |
4884 | if (ch != EOF) { |
4885 | STDCHAR buf = ch; | |
4886 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4887 | return ch; | |
4888 | } | |
4889 | return EOF; | |
760ac839 LW |
4890 | } |
4891 | ||
9e353e3b NIS |
4892 | #undef PerlIO_putc |
4893 | int | |
4894 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4895 | { |
e87a358a | 4896 | dTHX; |
14a5cf38 JH |
4897 | STDCHAR buf = ch; |
4898 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4899 | } |
4900 | ||
9e353e3b | 4901 | #undef PerlIO_puts |
760ac839 | 4902 | int |
9e353e3b | 4903 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4904 | { |
e87a358a | 4905 | dTHX; |
dcda55fc | 4906 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4907 | } |
4908 | ||
4909 | #undef PerlIO_rewind | |
4910 | void | |
c78749f2 | 4911 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4912 | { |
e87a358a | 4913 | dTHX; |
14a5cf38 JH |
4914 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4915 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4916 | } |
4917 | ||
4918 | #undef PerlIO_vprintf | |
4919 | int | |
4920 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4921 | { | |
14a5cf38 | 4922 | dTHX; |
53ce71d3 | 4923 | SV * sv; |
b83604b4 | 4924 | const char *s; |
14a5cf38 JH |
4925 | STRLEN len; |
4926 | SSize_t wrote; | |
2cc61e15 | 4927 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4928 | va_list apc; |
4929 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4930 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 4931 | va_end(apc); |
2cc61e15 | 4932 | #else |
53ce71d3 | 4933 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4934 | #endif |
b83604b4 | 4935 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4936 | wrote = PerlIO_write(f, s, len); |
4937 | SvREFCNT_dec(sv); | |
4938 | return wrote; | |
760ac839 LW |
4939 | } |
4940 | ||
4941 | #undef PerlIO_printf | |
6f9d8c32 | 4942 | int |
14a5cf38 | 4943 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4944 | { |
14a5cf38 JH |
4945 | va_list ap; |
4946 | int result; | |
4947 | va_start(ap, fmt); | |
4948 | result = PerlIO_vprintf(f, fmt, ap); | |
4949 | va_end(ap); | |
4950 | return result; | |
760ac839 LW |
4951 | } |
4952 | ||
4953 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4954 | int |
14a5cf38 | 4955 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4956 | { |
e87a358a | 4957 | dTHX; |
14a5cf38 JH |
4958 | va_list ap; |
4959 | int result; | |
4960 | va_start(ap, fmt); | |
4961 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
4962 | va_end(ap); | |
4963 | return result; | |
760ac839 LW |
4964 | } |
4965 | ||
4966 | #undef PerlIO_tmpfile | |
4967 | PerlIO * | |
c78749f2 | 4968 | PerlIO_tmpfile(void) |
760ac839 | 4969 | { |
dbf7dff6 | 4970 | #ifndef WIN32 |
2941a2e1 | 4971 | dTHX; |
dbf7dff6 | 4972 | #endif |
2941a2e1 | 4973 | PerlIO *f = NULL; |
2941a2e1 | 4974 | #ifdef WIN32 |
de009b76 | 4975 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
4976 | if (fd >= 0) |
4977 | f = PerlIO_fdopen(fd, "w+b"); | |
4978 | #else /* WIN32 */ | |
460c8493 | 4979 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
4980 | int fd = -1; |
4981 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 4982 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 4983 | SV * sv = NULL; |
60f7fc1e | 4984 | int old_umask = umask(0600); |
2941a2e1 JH |
4985 | /* |
4986 | * I have no idea how portable mkstemp() is ... NI-S | |
4987 | */ | |
7299ca58 | 4988 | if (tmpdir && *tmpdir) { |
0b99e986 | 4989 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 4990 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
4991 | sv_catpv(sv, tempname + 4); |
4992 | fd = mkstemp(SvPVX(sv)); | |
4993 | } | |
4994 | if (fd < 0) { | |
e40f8e80 | 4995 | SvREFCNT_dec(sv); |
7299ca58 | 4996 | sv = NULL; |
0b99e986 RGS |
4997 | /* else we try /tmp */ |
4998 | fd = mkstemp(tempname); | |
4999 | } | |
b7561fc9 BF |
5000 | if (fd < 0) { |
5001 | /* Try cwd */ | |
5002 | sv = newSVpvs("."); | |
5003 | sv_catpv(sv, tempname + 4); | |
5004 | fd = mkstemp(SvPVX(sv)); | |
5005 | } | |
60f7fc1e | 5006 | umask(old_umask); |
2941a2e1 JH |
5007 | if (fd >= 0) { |
5008 | f = PerlIO_fdopen(fd, "w+"); | |
5009 | if (f) | |
5010 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5011 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5012 | } |
ef8d46e8 | 5013 | SvREFCNT_dec(sv); |
2941a2e1 | 5014 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5015 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5016 | |
085e731f CB |
5017 | if (stdio) |
5018 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5019 | ||
2941a2e1 JH |
5020 | # endif /* else HAS_MKSTEMP */ |
5021 | #endif /* else WIN32 */ | |
5022 | return f; | |
760ac839 LW |
5023 | } |
5024 | ||
6f9d8c32 NIS |
5025 | #undef HAS_FSETPOS |
5026 | #undef HAS_FGETPOS | |
5027 | ||
22569500 | 5028 | #endif /* PERLIO_IS_STDIO */ |
760ac839 | 5029 | |
9e353e3b | 5030 | /*======================================================================================*/ |
14a5cf38 | 5031 | /* |
71200d45 NIS |
5032 | * Now some functions in terms of above which may be needed even if we are |
5033 | * not in true PerlIO mode | |
9e353e3b | 5034 | */ |
188f0c84 YO |
5035 | const char * |
5036 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5037 | { | |
5038 | dVAR; | |
8b850bd5 NC |
5039 | const char *direction = NULL; |
5040 | SV *layers; | |
188f0c84 YO |
5041 | /* |
5042 | * Need to supply default layer info from open.pm | |
5043 | */ | |
8b850bd5 NC |
5044 | |
5045 | if (!PL_curcop) | |
5046 | return NULL; | |
5047 | ||
5048 | if (mode && mode[0] != 'r') { | |
5049 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5050 | direction = "open>"; | |
5051 | } else { | |
5052 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5053 | direction = "open<"; | |
188f0c84 | 5054 | } |
8b850bd5 NC |
5055 | if (!direction) |
5056 | return NULL; | |
5057 | ||
20439bc7 | 5058 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5059 | |
5060 | assert(layers); | |
5061 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5062 | } |
5063 | ||
9e353e3b | 5064 | |
760ac839 LW |
5065 | #ifndef HAS_FSETPOS |
5066 | #undef PerlIO_setpos | |
5067 | int | |
766a733e | 5068 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5069 | { |
14a5cf38 JH |
5070 | if (SvOK(pos)) { |
5071 | STRLEN len; | |
2bcd6579 | 5072 | dTHX; |
c4420975 | 5073 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5074 | if (f && len == sizeof(Off_t)) |
5075 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5076 | } | |
93189314 | 5077 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5078 | return -1; |
760ac839 | 5079 | } |
c411622e | 5080 | #else |
c411622e | 5081 | #undef PerlIO_setpos |
5082 | int | |
766a733e | 5083 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5084 | { |
14a5cf38 JH |
5085 | dTHX; |
5086 | if (SvOK(pos)) { | |
5087 | STRLEN len; | |
c4420975 | 5088 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5089 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5090 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5091 | return fsetpos64(f, fpos); |
d9b3e12d | 5092 | #else |
14a5cf38 | 5093 | return fsetpos(f, fpos); |
d9b3e12d | 5094 | #endif |
14a5cf38 | 5095 | } |
766a733e | 5096 | } |
93189314 | 5097 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5098 | return -1; |
c411622e | 5099 | } |
5100 | #endif | |
760ac839 LW |
5101 | |
5102 | #ifndef HAS_FGETPOS | |
5103 | #undef PerlIO_getpos | |
5104 | int | |
766a733e | 5105 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5106 | { |
14a5cf38 JH |
5107 | dTHX; |
5108 | Off_t posn = PerlIO_tell(f); | |
5109 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5110 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5111 | } |
c411622e | 5112 | #else |
c411622e | 5113 | #undef PerlIO_getpos |
5114 | int | |
766a733e | 5115 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5116 | { |
14a5cf38 JH |
5117 | dTHX; |
5118 | Fpos_t fpos; | |
5119 | int code; | |
2d4389e4 | 5120 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5121 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5122 | #else |
14a5cf38 | 5123 | code = fgetpos(f, &fpos); |
d9b3e12d | 5124 | #endif |
14a5cf38 JH |
5125 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5126 | return code; | |
c411622e | 5127 | } |
5128 | #endif | |
760ac839 | 5129 | |
97cb92d6 | 5130 | #if !defined(HAS_VPRINTF) |
760ac839 LW |
5131 | |
5132 | int | |
c78749f2 | 5133 | vprintf(char *pat, char *args) |
662a7e3f CS |
5134 | { |
5135 | _doprnt(pat, args, stdout); | |
22569500 | 5136 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5137 | * value */ |
662a7e3f CS |
5138 | } |
5139 | ||
5140 | int | |
c78749f2 | 5141 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5142 | { |
5143 | _doprnt(pat, args, fd); | |
22569500 | 5144 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5145 | * value */ |
760ac839 LW |
5146 | } |
5147 | ||
5148 | #endif | |
5149 | ||
9cfa90c0 NC |
5150 | /* |
5151 | * Local variables: | |
5152 | * c-indentation-style: bsd | |
5153 | * c-basic-offset: 4 | |
14d04a33 | 5154 | * indent-tabs-mode: nil |
9cfa90c0 NC |
5155 | * End: |
5156 | * | |
14d04a33 | 5157 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5158 | */ |