Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
5cb43542 RGS |
2 | * perlio.c |
3 | * Copyright (c) 1996-2006, Nick Ing-Simmons | |
2eee27d7 | 4 | * Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011 Larry Wall and others |
5cb43542 RGS |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public License | |
7 | * or the Artistic License, as specified in the README file. | |
760ac839 LW |
8 | */ |
9 | ||
14a5cf38 | 10 | /* |
d31a8517 AT |
11 | * Hour after hour for nearly three weary days he had jogged up and down, |
12 | * over passes, and through long dales, and across many streams. | |
4ac71550 TC |
13 | * |
14 | * [pp.791-792 of _The Lord of the Rings_, V/iii: "The Muster of Rohan"] | |
d31a8517 AT |
15 | */ |
16 | ||
166f8a29 DM |
17 | /* This file contains the functions needed to implement PerlIO, which |
18 | * is Perl's private replacement for the C stdio library. This is used | |
19 | * by default unless you compile with -Uuseperlio or run with | |
20 | * PERLIO=:stdio (but don't do this unless you know what you're doing) | |
21 | */ | |
22 | ||
d31a8517 | 23 | /* |
71200d45 | 24 | * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get |
14a5cf38 | 25 | * at the dispatch tables, even when we do not need it for other reasons. |
71200d45 | 26 | * Invent a dSYS macro to abstract this out |
14a5cf38 | 27 | */ |
7bcba3d4 NIS |
28 | #ifdef PERL_IMPLICIT_SYS |
29 | #define dSYS dTHX | |
30 | #else | |
31 | #define dSYS dNOOP | |
32 | #endif | |
33 | ||
6f9d8c32 | 34 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 35 | /* |
6f9d8c32 | 36 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 37 | * which are not #defined in perlio.h. |
6f9d8c32 | 38 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
39 | */ |
40 | ||
41 | #include "EXTERN.h" | |
864dbfa3 | 42 | #define PERL_IN_PERLIO_C |
760ac839 LW |
43 | #include "perl.h" |
44 | ||
32af7c23 CL |
45 | #ifdef PERL_IMPLICIT_CONTEXT |
46 | #undef dSYS | |
47 | #define dSYS dTHX | |
48 | #endif | |
49 | ||
0c4f7ff0 NIS |
50 | #include "XSUB.h" |
51 | ||
9cffb111 OS |
52 | #ifdef __Lynx__ |
53 | /* Missing proto on LynxOS */ | |
54 | int mkstemp(char*); | |
55 | #endif | |
56 | ||
25bbd826 CB |
57 | #ifdef VMS |
58 | #include <rms.h> | |
59 | #endif | |
60 | ||
abf9167d DM |
61 | #define PerlIO_lockcnt(f) (((PerlIOl*)(f))->head->flags) |
62 | ||
1b7a0411 | 63 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 64 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 65 | if (PerlIOValid(f)) { \ |
46c461b5 | 66 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
67 | if (tab && tab->callback) \ |
68 | return (*tab->callback) args; \ | |
69 | else \ | |
70 | return PerlIOBase_ ## base args; \ | |
71 | } \ | |
72 | else \ | |
73 | SETERRNO(EBADF, SS_IVCHAN); \ | |
74 | return failure | |
75 | ||
76 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 77 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 78 | if (PerlIOValid(f)) { \ |
46c461b5 | 79 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
80 | if (tab && tab->callback) \ |
81 | return (*tab->callback) args; \ | |
82 | SETERRNO(EINVAL, LIB_INVARG); \ | |
83 | } \ | |
84 | else \ | |
85 | SETERRNO(EBADF, SS_IVCHAN); \ | |
86 | return failure | |
87 | ||
88 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 89 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 90 | if (PerlIOValid(f)) { \ |
46c461b5 | 91 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
92 | if (tab && tab->callback) \ |
93 | (*tab->callback) args; \ | |
94 | else \ | |
95 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
96 | } \ |
97 | else \ | |
98 | SETERRNO(EBADF, SS_IVCHAN) | |
99 | ||
100 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 101 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 102 | if (PerlIOValid(f)) { \ |
46c461b5 | 103 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
104 | if (tab && tab->callback) \ |
105 | (*tab->callback) args; \ | |
37725cdc NIS |
106 | else \ |
107 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
108 | } \ |
109 | else \ | |
110 | SETERRNO(EBADF, SS_IVCHAN) | |
111 | ||
89a3a251 JH |
112 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
113 | extern int fseeko(FILE *, off_t, int); | |
114 | extern off_t ftello(FILE *); | |
115 | #endif | |
116 | ||
76e6dc3a KW |
117 | #define NATIVE_0xd CR_NATIVE |
118 | #define NATIVE_0xa LF_NATIVE | |
119 | ||
a0c21aa1 JH |
120 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); |
121 | ||
71ab4674 SP |
122 | int |
123 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
124 | { | |
125 | /* | |
126 | * This used to be contents of do_binmode in doio.c | |
127 | */ | |
128 | #ifdef DOSISH | |
71ab4674 | 129 | dTHX; |
58c0efa5 | 130 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
131 | #ifdef NETWARE |
132 | if (PerlLIO_setmode(fp, mode) != -1) { | |
133 | #else | |
134 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
135 | #endif | |
71ab4674 SP |
136 | return 1; |
137 | } | |
138 | else | |
139 | return 0; | |
71ab4674 SP |
140 | #else |
141 | # if defined(USEMYBINMODE) | |
142 | dTHX; | |
58c0efa5 RGS |
143 | # if defined(__CYGWIN__) |
144 | PERL_UNUSED_ARG(iotype); | |
145 | # endif | |
71ab4674 SP |
146 | if (my_binmode(fp, iotype, mode) != FALSE) |
147 | return 1; | |
148 | else | |
149 | return 0; | |
150 | # else | |
151 | PERL_UNUSED_ARG(fp); | |
152 | PERL_UNUSED_ARG(iotype); | |
153 | PERL_UNUSED_ARG(mode); | |
154 | return 1; | |
155 | # endif | |
156 | #endif | |
157 | } | |
71ab4674 | 158 | |
06c7082d | 159 | #ifndef O_ACCMODE |
22569500 | 160 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
161 | #endif |
162 | ||
163 | int | |
164 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
165 | { | |
de009b76 | 166 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
167 | int ix = 0; |
168 | int ptype; | |
169 | switch (result) { | |
170 | case O_RDONLY: | |
171 | ptype = IoTYPE_RDONLY; | |
172 | break; | |
173 | case O_WRONLY: | |
174 | ptype = IoTYPE_WRONLY; | |
175 | break; | |
176 | case O_RDWR: | |
177 | default: | |
178 | ptype = IoTYPE_RDWR; | |
179 | break; | |
180 | } | |
181 | if (writing) | |
182 | *writing = (result != O_RDONLY); | |
183 | ||
184 | if (result == O_RDONLY) { | |
185 | mode[ix++] = 'r'; | |
186 | } | |
187 | #ifdef O_APPEND | |
188 | else if (rawmode & O_APPEND) { | |
189 | mode[ix++] = 'a'; | |
190 | if (result != O_WRONLY) | |
191 | mode[ix++] = '+'; | |
192 | } | |
193 | #endif | |
194 | else { | |
195 | if (result == O_WRONLY) | |
196 | mode[ix++] = 'w'; | |
197 | else { | |
198 | mode[ix++] = 'r'; | |
199 | mode[ix++] = '+'; | |
200 | } | |
201 | } | |
43e5477e JH |
202 | #if O_BINARY != 0 |
203 | /* Unless O_BINARY is different from zero, bit-and:ing | |
204 | * with it won't do much good. */ | |
06c7082d NIS |
205 | if (rawmode & O_BINARY) |
206 | mode[ix++] = 'b'; | |
43e5477e | 207 | # endif |
06c7082d NIS |
208 | mode[ix] = '\0'; |
209 | return ptype; | |
210 | } | |
211 | ||
eb73beca NIS |
212 | #ifndef PERLIO_LAYERS |
213 | int | |
214 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
215 | { | |
6874a2de NIS |
216 | if (!names || !*names |
217 | || strEQ(names, ":crlf") | |
218 | || strEQ(names, ":raw") | |
219 | || strEQ(names, ":bytes") | |
220 | ) { | |
14a5cf38 JH |
221 | return 0; |
222 | } | |
223 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
224 | /* | |
71200d45 | 225 | * NOTREACHED |
14a5cf38 JH |
226 | */ |
227 | return -1; | |
eb73beca NIS |
228 | } |
229 | ||
13621cfb NIS |
230 | void |
231 | PerlIO_destruct(pTHX) | |
232 | { | |
233 | } | |
234 | ||
f5b9d040 NIS |
235 | int |
236 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
237 | { | |
14a5cf38 | 238 | return perlsio_binmode(fp, iotype, mode); |
f5b9d040 | 239 | } |
60382766 | 240 | |
e0fa5af2 | 241 | PerlIO * |
ecdeb87c | 242 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 243 | { |
a0fd4948 | 244 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
245 | return NULL; |
246 | #else | |
247 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 248 | return PerlSIO_fdupopen(f); |
0553478e | 249 | #else |
30753f56 NIS |
250 | #ifdef WIN32 |
251 | return win32_fdupopen(f); | |
252 | #else | |
e0fa5af2 | 253 | if (f) { |
504618e9 | 254 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 255 | if (fd >= 0) { |
06c7082d | 256 | char mode[8]; |
a5936e02 | 257 | #ifdef DJGPP |
dcda55fc AL |
258 | const int omode = djgpp_get_stream_mode(f); |
259 | #else | |
260 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 261 | #endif |
06c7082d | 262 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 263 | /* the r+ is a hack */ |
06c7082d | 264 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
265 | } |
266 | return NULL; | |
267 | } | |
268 | else { | |
93189314 | 269 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 270 | } |
7114a2d2 | 271 | #endif |
e0fa5af2 | 272 | return NULL; |
0553478e | 273 | #endif |
30753f56 | 274 | #endif |
e0fa5af2 NIS |
275 | } |
276 | ||
277 | ||
14a5cf38 | 278 | /* |
71200d45 | 279 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 280 | */ |
ee518936 NIS |
281 | |
282 | PerlIO * | |
14a5cf38 JH |
283 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
284 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
285 | { | |
7cf31beb NIS |
286 | if (narg) { |
287 | if (narg > 1) { | |
3b8752bb | 288 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 289 | } |
14a5cf38 JH |
290 | if (*args == &PL_sv_undef) |
291 | return PerlIO_tmpfile(); | |
292 | else { | |
41188aa0 | 293 | STRLEN len; |
74622586 | 294 | const char *name = SvPV_const(*args, len); |
41188aa0 | 295 | if (!IS_SAFE_PATHNAME(name, len, "open")) |
c8028aa6 TC |
296 | return NULL; |
297 | ||
3b6c1aba | 298 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
299 | fd = PerlLIO_open3(name, imode, perm); |
300 | if (fd >= 0) | |
de009b76 | 301 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
302 | } |
303 | else if (old) { | |
304 | return PerlIO_reopen(name, mode, old); | |
305 | } | |
306 | else { | |
307 | return PerlIO_open(name, mode); | |
308 | } | |
309 | } | |
310 | } | |
311 | else { | |
312 | return PerlIO_fdopen(fd, (char *) mode); | |
313 | } | |
314 | return NULL; | |
ee518936 NIS |
315 | } |
316 | ||
15eb3045 | 317 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
0c4f7ff0 NIS |
318 | XS(XS_PerlIO__Layer__find) |
319 | { | |
14a5cf38 JH |
320 | dXSARGS; |
321 | if (items < 2) | |
322 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
323 | else { | |
dcda55fc | 324 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
325 | ST(0) = (strEQ(name, "crlf") |
326 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
327 | XSRETURN(1); | |
328 | } | |
0c4f7ff0 NIS |
329 | } |
330 | ||
331 | ||
332 | void | |
333 | Perl_boot_core_PerlIO(pTHX) | |
334 | { | |
14a5cf38 | 335 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
336 | } |
337 | ||
ac27b0f5 NIS |
338 | #endif |
339 | ||
32e30700 | 340 | |
6f9d8c32 | 341 | /*======================================================================================*/ |
14a5cf38 | 342 | /* |
71200d45 | 343 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 344 | */ |
760ac839 | 345 | |
76ced9ad NIS |
346 | #include "perliol.h" |
347 | ||
6f9d8c32 | 348 | void |
14a5cf38 JH |
349 | PerlIO_debug(const char *fmt, ...) |
350 | { | |
14a5cf38 JH |
351 | va_list ap; |
352 | dSYS; | |
353 | va_start(ap, fmt); | |
582588d2 | 354 | if (!PL_perlio_debug_fd) { |
284167a5 | 355 | if (!TAINTING_get && |
985213f2 AB |
356 | PerlProc_getuid() == PerlProc_geteuid() && |
357 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
358 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
359 | if (s && *s) | |
360 | PL_perlio_debug_fd | |
361 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
362 | else | |
363 | PL_perlio_debug_fd = -1; | |
364 | } else { | |
365 | /* tainting or set*id, so ignore the environment, and ensure we | |
366 | skip these tests next time through. */ | |
27da23d5 | 367 | PL_perlio_debug_fd = -1; |
582588d2 | 368 | } |
14a5cf38 | 369 | } |
27da23d5 | 370 | if (PL_perlio_debug_fd > 0) { |
70ace5da | 371 | #ifdef USE_ITHREADS |
dcda55fc | 372 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
373 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
374 | char buffer[1024]; | |
1208b3dd JH |
375 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
376 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
b469f1e0 | 377 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2)); |
70ace5da | 378 | #else |
dcda55fc AL |
379 | const char *s = CopFILE(PL_curcop); |
380 | STRLEN len; | |
550e2ce0 NC |
381 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
382 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
383 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
384 | ||
b83604b4 | 385 | s = SvPV_const(sv, len); |
b469f1e0 | 386 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len)); |
14a5cf38 | 387 | SvREFCNT_dec(sv); |
70ace5da | 388 | #endif |
14a5cf38 JH |
389 | } |
390 | va_end(ap); | |
6f9d8c32 NIS |
391 | } |
392 | ||
9e353e3b NIS |
393 | /*--------------------------------------------------------------------------------------*/ |
394 | ||
14a5cf38 | 395 | /* |
71200d45 | 396 | * Inner level routines |
14a5cf38 | 397 | */ |
9e353e3b | 398 | |
16865ff7 DM |
399 | /* check that the head field of each layer points back to the head */ |
400 | ||
401 | #ifdef DEBUGGING | |
402 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
403 | static void | |
404 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
405 | { | |
406 | PerlIOl *head, *p; | |
407 | int seen = 0; | |
dd791c72 JH |
408 | #ifndef PERL_IMPLICIT_SYS |
409 | PERL_UNUSED_CONTEXT; | |
410 | #endif | |
16865ff7 DM |
411 | if (!PerlIOValid(f)) |
412 | return; | |
413 | p = head = PerlIOBase(f)->head; | |
414 | assert(p); | |
415 | do { | |
416 | assert(p->head == head); | |
417 | if (p == (PerlIOl*)f) | |
418 | seen = 1; | |
419 | p = p->next; | |
420 | } while (p); | |
421 | assert(seen); | |
422 | } | |
423 | #else | |
424 | # define VERIFY_HEAD(f) | |
425 | #endif | |
426 | ||
427 | ||
14a5cf38 | 428 | /* |
71200d45 | 429 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 430 | */ |
05d1247b | 431 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 432 | |
8995e67d DM |
433 | static void |
434 | PerlIO_init_table(pTHX) | |
435 | { | |
436 | if (PL_perlio) | |
437 | return; | |
438 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
439 | } | |
440 | ||
441 | ||
442 | ||
760ac839 | 443 | PerlIO * |
5f1a76d0 | 444 | PerlIO_allocate(pTHX) |
6f9d8c32 | 445 | { |
14a5cf38 | 446 | /* |
71200d45 | 447 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 448 | */ |
303f2dc3 DM |
449 | PerlIOl **last; |
450 | PerlIOl *f; | |
a1ea730d | 451 | last = &PL_perlio; |
14a5cf38 JH |
452 | while ((f = *last)) { |
453 | int i; | |
303f2dc3 | 454 | last = (PerlIOl **) (f); |
14a5cf38 | 455 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 456 | if (!((++f)->next)) { |
4e0ef342 | 457 | goto good_exit; |
14a5cf38 JH |
458 | } |
459 | } | |
460 | } | |
303f2dc3 | 461 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
462 | if (!f) { |
463 | return NULL; | |
464 | } | |
303f2dc3 | 465 | *last = (PerlIOl*) f++; |
4e0ef342 DD |
466 | |
467 | good_exit: | |
abf9167d | 468 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 469 | f->tab = NULL; |
16865ff7 | 470 | f->head = f; |
303f2dc3 | 471 | return (PerlIO*) f; |
05d1247b NIS |
472 | } |
473 | ||
a1ea730d NIS |
474 | #undef PerlIO_fdupopen |
475 | PerlIO * | |
ecdeb87c | 476 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 477 | { |
04892f78 | 478 | if (PerlIOValid(f)) { |
de009b76 | 479 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 480 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
481 | if (tab && tab->Dup) |
482 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
483 | else { |
484 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
485 | } | |
a1ea730d | 486 | } |
210e727c JH |
487 | else |
488 | SETERRNO(EBADF, SS_IVCHAN); | |
489 | ||
490 | return NULL; | |
a1ea730d NIS |
491 | } |
492 | ||
493 | void | |
303f2dc3 | 494 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 495 | { |
303f2dc3 | 496 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
497 | if (table) { |
498 | int i; | |
303f2dc3 | 499 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 500 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
501 | PerlIOl * const f = table + i; |
502 | if (f->next) { | |
503 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
504 | } |
505 | } | |
3a1ee7e8 | 506 | Safefree(table); |
14a5cf38 | 507 | *tablep = NULL; |
05d1247b | 508 | } |
05d1247b NIS |
509 | } |
510 | ||
fcf2db38 NIS |
511 | |
512 | PerlIO_list_t * | |
3a1ee7e8 | 513 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 514 | { |
14a5cf38 | 515 | PerlIO_list_t *list; |
96a5add6 | 516 | PERL_UNUSED_CONTEXT; |
a02a5408 | 517 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
518 | list->refcnt = 1; |
519 | return list; | |
fcf2db38 NIS |
520 | } |
521 | ||
522 | void | |
3a1ee7e8 | 523 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 524 | { |
14a5cf38 JH |
525 | if (list) { |
526 | if (--list->refcnt == 0) { | |
527 | if (list->array) { | |
14a5cf38 | 528 | IV i; |
ef8d46e8 VP |
529 | for (i = 0; i < list->cur; i++) |
530 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
531 | Safefree(list->array); |
532 | } | |
533 | Safefree(list); | |
534 | } | |
535 | } | |
fcf2db38 NIS |
536 | } |
537 | ||
538 | void | |
3a1ee7e8 | 539 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 540 | { |
334e202e | 541 | PerlIO_pair_t *p; |
b37c2d43 AL |
542 | PERL_UNUSED_CONTEXT; |
543 | ||
14a5cf38 JH |
544 | if (list->cur >= list->len) { |
545 | list->len += 8; | |
546 | if (list->array) | |
547 | Renew(list->array, list->len, PerlIO_pair_t); | |
548 | else | |
a02a5408 | 549 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
550 | } |
551 | p = &(list->array[list->cur++]); | |
552 | p->funcs = funcs; | |
553 | if ((p->arg = arg)) { | |
f84c484e | 554 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 555 | } |
fcf2db38 NIS |
556 | } |
557 | ||
3a1ee7e8 NIS |
558 | PerlIO_list_t * |
559 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
560 | { | |
b37c2d43 | 561 | PerlIO_list_t *list = NULL; |
694c95cf JH |
562 | if (proto) { |
563 | int i; | |
564 | list = PerlIO_list_alloc(aTHX); | |
565 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 566 | SV *arg = proto->array[i].arg; |
24d147a6 | 567 | #ifdef USE_ITHREADS |
a951d81d BL |
568 | if (arg && param) |
569 | arg = sv_dup(arg, param); | |
570 | #else | |
571 | PERL_UNUSED_ARG(param); | |
572 | #endif | |
694c95cf JH |
573 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
574 | } | |
3a1ee7e8 NIS |
575 | } |
576 | return list; | |
577 | } | |
4a4a6116 | 578 | |
05d1247b | 579 | void |
3a1ee7e8 | 580 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 581 | { |
3aaf42a7 | 582 | #ifdef USE_ITHREADS |
303f2dc3 DM |
583 | PerlIOl **table = &proto->Iperlio; |
584 | PerlIOl *f; | |
3a1ee7e8 NIS |
585 | PL_perlio = NULL; |
586 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
587 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 588 | PerlIO_init_table(aTHX); |
a25429c6 | 589 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
590 | while ((f = *table)) { |
591 | int i; | |
303f2dc3 | 592 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 593 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
594 | if (f->next) { |
595 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
596 | } |
597 | f++; | |
598 | } | |
599 | } | |
1b6737cc | 600 | #else |
a25429c6 | 601 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
602 | PERL_UNUSED_ARG(proto); |
603 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 604 | #endif |
9a6404c5 DM |
605 | } |
606 | ||
607 | void | |
13621cfb NIS |
608 | PerlIO_destruct(pTHX) |
609 | { | |
303f2dc3 DM |
610 | PerlIOl **table = &PL_perlio; |
611 | PerlIOl *f; | |
694c95cf | 612 | #ifdef USE_ITHREADS |
a25429c6 | 613 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 614 | #endif |
14a5cf38 JH |
615 | while ((f = *table)) { |
616 | int i; | |
303f2dc3 | 617 | table = (PerlIOl **) (f++); |
14a5cf38 | 618 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 619 | PerlIO *x = &(f->next); |
dcda55fc | 620 | const PerlIOl *l; |
14a5cf38 | 621 | while ((l = *x)) { |
cc6623a8 | 622 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
14a5cf38 JH |
623 | PerlIO_debug("Destruct popping %s\n", l->tab->name); |
624 | PerlIO_flush(x); | |
625 | PerlIO_pop(aTHX_ x); | |
626 | } | |
627 | else { | |
628 | x = PerlIONext(x); | |
629 | } | |
630 | } | |
631 | f++; | |
632 | } | |
633 | } | |
13621cfb NIS |
634 | } |
635 | ||
636 | void | |
a999f61b | 637 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 638 | { |
dcda55fc | 639 | const PerlIOl *l = *f; |
16865ff7 | 640 | VERIFY_HEAD(f); |
14a5cf38 | 641 | if (l) { |
cc6623a8 DM |
642 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
643 | l->tab ? l->tab->name : "(Null)"); | |
644 | if (l->tab && l->tab->Popped) { | |
14a5cf38 JH |
645 | /* |
646 | * If popped returns non-zero do not free its layer structure | |
647 | * it has either done so itself, or it is shared and still in | |
71200d45 | 648 | * use |
14a5cf38 | 649 | */ |
f62ce20a | 650 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
651 | return; |
652 | } | |
abf9167d DM |
653 | if (PerlIO_lockcnt(f)) { |
654 | /* we're in use; defer freeing the structure */ | |
655 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
656 | PerlIOBase(f)->tab = NULL; | |
657 | } | |
658 | else { | |
659 | *f = l->next; | |
660 | Safefree(l); | |
661 | } | |
662 | ||
a8c08ecd | 663 | } |
6f9d8c32 NIS |
664 | } |
665 | ||
39f7a870 JH |
666 | /* Return as an array the stack of layers on a filehandle. Note that |
667 | * the stack is returned top-first in the array, and there are three | |
668 | * times as many array elements as there are layers in the stack: the | |
669 | * first element of a layer triplet is the name, the second one is the | |
670 | * arguments, and the third one is the flags. */ | |
671 | ||
672 | AV * | |
673 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
674 | { | |
dcda55fc | 675 | AV * const av = newAV(); |
39f7a870 | 676 | |
dcda55fc AL |
677 | if (PerlIOValid(f)) { |
678 | PerlIOl *l = PerlIOBase(f); | |
679 | ||
680 | while (l) { | |
92e45a3e NC |
681 | /* There is some collusion in the implementation of |
682 | XS_PerlIO_get_layers - it knows that name and flags are | |
683 | generated as fresh SVs here, and takes advantage of that to | |
684 | "copy" them by taking a reference. If it changes here, it needs | |
685 | to change there too. */ | |
dcda55fc AL |
686 | SV * const name = l->tab && l->tab->name ? |
687 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
688 | SV * const arg = l->tab && l->tab->Getarg ? | |
689 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
690 | av_push(av, name); | |
691 | av_push(av, arg); | |
692 | av_push(av, newSViv((IV)l->flags)); | |
693 | l = l->next; | |
694 | } | |
695 | } | |
39f7a870 | 696 | |
dcda55fc | 697 | return av; |
39f7a870 JH |
698 | } |
699 | ||
9e353e3b | 700 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 701 | /* |
71200d45 | 702 | * XS Interface for perl code |
14a5cf38 | 703 | */ |
9e353e3b | 704 | |
fcf2db38 | 705 | PerlIO_funcs * |
2edd7e44 | 706 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 707 | { |
20b7effb | 708 | |
14a5cf38 JH |
709 | IV i; |
710 | if ((SSize_t) len <= 0) | |
711 | len = strlen(name); | |
3a1ee7e8 | 712 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 713 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
714 | const STRLEN this_len = strlen(f->name); |
715 | if (this_len == len && memEQ(f->name, name, len)) { | |
fe5a182c | 716 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
717 | return f; |
718 | } | |
719 | } | |
3a1ee7e8 NIS |
720 | if (load && PL_subname && PL_def_layerlist |
721 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
722 | if (PL_in_load_module) { |
723 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
724 | return NULL; | |
725 | } else { | |
396482e1 | 726 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 727 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 728 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 729 | ENTER; |
4fa7c2bf | 730 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 731 | if (cv) { |
9cfa90c0 | 732 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 733 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 734 | } |
4fa7c2bf | 735 | PL_in_load_module = TRUE; |
d7a09b41 SR |
736 | /* |
737 | * The two SVs are magically freed by load_module | |
738 | */ | |
a0714e2c | 739 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
740 | LEAVE; |
741 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
742 | } | |
14a5cf38 JH |
743 | } |
744 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
745 | return NULL; | |
f3862f8b NIS |
746 | } |
747 | ||
2a1bc955 | 748 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
749 | |
750 | static int | |
751 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
752 | { | |
14a5cf38 | 753 | if (SvROK(sv)) { |
159b6efe | 754 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
755 | PerlIO * const ifp = IoIFP(io); |
756 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
757 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
758 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
759 | } |
760 | return 0; | |
b13b2135 NIS |
761 | } |
762 | ||
763 | static int | |
764 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
765 | { | |
14a5cf38 | 766 | if (SvROK(sv)) { |
159b6efe | 767 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
768 | PerlIO * const ifp = IoIFP(io); |
769 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
770 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
771 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
772 | } |
773 | return 0; | |
b13b2135 NIS |
774 | } |
775 | ||
776 | static int | |
777 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
778 | { | |
be2597df | 779 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 780 | return 0; |
b13b2135 NIS |
781 | } |
782 | ||
783 | static int | |
784 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
785 | { | |
be2597df | 786 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 787 | return 0; |
b13b2135 NIS |
788 | } |
789 | ||
790 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
791 | perlio_mg_get, |
792 | perlio_mg_set, | |
22569500 | 793 | NULL, /* len */ |
14a5cf38 JH |
794 | perlio_mg_clear, |
795 | perlio_mg_free | |
b13b2135 NIS |
796 | }; |
797 | ||
15eb3045 | 798 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
799 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
800 | { | |
14a5cf38 | 801 | dXSARGS; |
dcda55fc AL |
802 | SV * const sv = SvRV(ST(1)); |
803 | AV * const av = newAV(); | |
14a5cf38 JH |
804 | MAGIC *mg; |
805 | int count = 0; | |
806 | int i; | |
ad64d0ec | 807 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
808 | SvRMAGICAL_off(sv); |
809 | mg = mg_find(sv, PERL_MAGIC_ext); | |
810 | mg->mg_virtual = &perlio_vtab; | |
811 | mg_magical(sv); | |
be2597df | 812 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
813 | for (i = 2; i < items; i++) { |
814 | STRLEN len; | |
dcda55fc AL |
815 | const char * const name = SvPV_const(ST(i), len); |
816 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 817 | if (layer) { |
b37c2d43 | 818 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
819 | } |
820 | else { | |
821 | ST(count) = ST(i); | |
822 | count++; | |
823 | } | |
824 | } | |
825 | SvREFCNT_dec(av); | |
826 | XSRETURN(count); | |
827 | } | |
828 | ||
b8fda935 | 829 | #endif /* USE_ATTRIBUTES_FOR_PERLIO */ |
2a1bc955 | 830 | |
e3f3bf95 NIS |
831 | SV * |
832 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 833 | { |
da51bb9b | 834 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 835 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 836 | return sv; |
e3f3bf95 NIS |
837 | } |
838 | ||
15eb3045 | 839 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 840 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 841 | { |
486ec47a | 842 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
843 | during loading of layers. |
844 | */ | |
845 | dXSARGS; | |
58c0efa5 | 846 | PERL_UNUSED_ARG(cv); |
c9bca74a | 847 | if (items) |
e62f0680 | 848 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
849 | XSRETURN(0); |
850 | } | |
851 | ||
15eb3045 | 852 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 853 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 854 | { |
14a5cf38 | 855 | dXSARGS; |
58c0efa5 | 856 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
857 | if (items < 2) |
858 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
859 | else { | |
de009b76 | 860 | STRLEN len; |
46c461b5 | 861 | const char * const name = SvPV_const(ST(1), len); |
f814d560 | 862 | const bool load = (items > 2) ? SvTRUE_NN(ST(2)) : 0; |
46c461b5 | 863 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
864 | ST(0) = |
865 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
866 | &PL_sv_undef; | |
867 | XSRETURN(1); | |
868 | } | |
0c4f7ff0 NIS |
869 | } |
870 | ||
e3f3bf95 NIS |
871 | void |
872 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
873 | { | |
3a1ee7e8 NIS |
874 | if (!PL_known_layers) |
875 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 876 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 877 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
878 | } |
879 | ||
1141d9f8 | 880 | int |
fcf2db38 | 881 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 882 | { |
14a5cf38 JH |
883 | if (names) { |
884 | const char *s = names; | |
885 | while (*s) { | |
886 | while (isSPACE(*s) || *s == ':') | |
887 | s++; | |
888 | if (*s) { | |
889 | STRLEN llen = 0; | |
890 | const char *e = s; | |
bd61b366 | 891 | const char *as = NULL; |
14a5cf38 JH |
892 | STRLEN alen = 0; |
893 | if (!isIDFIRST(*s)) { | |
894 | /* | |
895 | * Message is consistent with how attribute lists are | |
896 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 897 | * seen as an invalid separator character. |
14a5cf38 | 898 | */ |
de009b76 | 899 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
900 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
901 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
902 | q, *s, q, s); | |
93189314 | 903 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
904 | return -1; |
905 | } | |
906 | do { | |
907 | e++; | |
0eb30aeb | 908 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
909 | llen = e - s; |
910 | if (*e == '(') { | |
911 | int nesting = 1; | |
912 | as = ++e; | |
913 | while (nesting) { | |
914 | switch (*e++) { | |
915 | case ')': | |
916 | if (--nesting == 0) | |
917 | alen = (e - 1) - as; | |
918 | break; | |
919 | case '(': | |
920 | ++nesting; | |
921 | break; | |
922 | case '\\': | |
923 | /* | |
924 | * It's a nul terminated string, not allowed | |
925 | * to \ the terminating null. Anything other | |
71200d45 | 926 | * character is passed over. |
14a5cf38 JH |
927 | */ |
928 | if (*e++) { | |
929 | break; | |
930 | } | |
931 | /* | |
71200d45 | 932 | * Drop through |
14a5cf38 JH |
933 | */ |
934 | case '\0': | |
935 | e--; | |
a2a5de95 NC |
936 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
937 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
938 | (int) (e - s), s); | |
14a5cf38 JH |
939 | return -1; |
940 | default: | |
941 | /* | |
71200d45 | 942 | * boring. |
14a5cf38 JH |
943 | */ |
944 | break; | |
945 | } | |
946 | } | |
947 | } | |
948 | if (e > s) { | |
46c461b5 | 949 | PerlIO_funcs * const layer = |
14a5cf38 JH |
950 | PerlIO_find_layer(aTHX_ s, llen, 1); |
951 | if (layer) { | |
a951d81d BL |
952 | SV *arg = NULL; |
953 | if (as) | |
954 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 955 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 956 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 957 | SvREFCNT_dec(arg); |
14a5cf38 JH |
958 | } |
959 | else { | |
a2a5de95 NC |
960 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
961 | (int) llen, s); | |
14a5cf38 JH |
962 | return -1; |
963 | } | |
964 | } | |
965 | s = e; | |
966 | } | |
967 | } | |
968 | } | |
969 | return 0; | |
1141d9f8 NIS |
970 | } |
971 | ||
dfebf958 | 972 | void |
fcf2db38 | 973 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 974 | { |
27da23d5 | 975 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 976 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 977 | tab = &PerlIO_crlf; |
846be114 | 978 | #else |
6ce75a77 | 979 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 980 | tab = &PerlIO_stdio; |
846be114 | 981 | #endif |
14a5cf38 | 982 | PerlIO_debug("Pushing %s\n", tab->name); |
0987d6f3 | 983 | PerlIO_list_push(aTHX_ av, (PerlIO_funcs *)tab, &PL_sv_undef); |
dfebf958 NIS |
984 | } |
985 | ||
e3f3bf95 | 986 | SV * |
14a5cf38 | 987 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 988 | { |
14a5cf38 | 989 | return av->array[n].arg; |
e3f3bf95 NIS |
990 | } |
991 | ||
f3862f8b | 992 | PerlIO_funcs * |
14a5cf38 | 993 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 994 | { |
14a5cf38 JH |
995 | if (n >= 0 && n < av->cur) { |
996 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
997 | av->array[n].funcs->name); | |
998 | return av->array[n].funcs; | |
999 | } | |
1000 | if (!def) | |
1001 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1002 | return def; | |
e3f3bf95 NIS |
1003 | } |
1004 | ||
4ec2216f NIS |
1005 | IV |
1006 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1007 | { | |
8772537c AL |
1008 | PERL_UNUSED_ARG(mode); |
1009 | PERL_UNUSED_ARG(arg); | |
1010 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1011 | if (PerlIOValid(f)) { |
1012 | PerlIO_flush(f); | |
1013 | PerlIO_pop(aTHX_ f); | |
1014 | return 0; | |
1015 | } | |
1016 | return -1; | |
1017 | } | |
1018 | ||
27da23d5 | 1019 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1020 | sizeof(PerlIO_funcs), |
1021 | "pop", | |
1022 | 0, | |
1023 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1024 | PerlIOPop_pushed, | |
1025 | NULL, | |
c0888ace | 1026 | PerlIOBase_open, |
4ec2216f NIS |
1027 | NULL, |
1028 | NULL, | |
1029 | NULL, | |
1030 | NULL, | |
1031 | NULL, | |
1032 | NULL, | |
1033 | NULL, | |
1034 | NULL, | |
de009b76 AL |
1035 | NULL, |
1036 | NULL, | |
4ec2216f NIS |
1037 | NULL, /* flush */ |
1038 | NULL, /* fill */ | |
1039 | NULL, | |
1040 | NULL, | |
1041 | NULL, | |
1042 | NULL, | |
1043 | NULL, /* get_base */ | |
1044 | NULL, /* get_bufsiz */ | |
1045 | NULL, /* get_ptr */ | |
1046 | NULL, /* get_cnt */ | |
1047 | NULL, /* set_ptrcnt */ | |
1048 | }; | |
1049 | ||
fcf2db38 | 1050 | PerlIO_list_t * |
e3f3bf95 NIS |
1051 | PerlIO_default_layers(pTHX) |
1052 | { | |
3a1ee7e8 | 1053 | if (!PL_def_layerlist) { |
284167a5 | 1054 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1055 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1056 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1057 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1058 | #if defined(WIN32) |
27da23d5 | 1059 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1060 | #if 0 |
14a5cf38 | 1061 | osLayer = &PerlIO_win32; |
0c4128ad | 1062 | #endif |
2f8118af | 1063 | #endif |
27da23d5 JH |
1064 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1065 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1066 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1067 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1068 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1069 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1070 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
0987d6f3 TC |
1071 | PerlIO_list_push(aTHX_ PL_def_layerlist, (PerlIO_funcs *)osLayer, |
1072 | &PL_sv_undef); | |
14a5cf38 | 1073 | if (s) { |
3a1ee7e8 | 1074 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1075 | } |
1076 | else { | |
3a1ee7e8 | 1077 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1078 | } |
1141d9f8 | 1079 | } |
3a1ee7e8 NIS |
1080 | if (PL_def_layerlist->cur < 2) { |
1081 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1082 | } |
3a1ee7e8 | 1083 | return PL_def_layerlist; |
e3f3bf95 NIS |
1084 | } |
1085 | ||
0c4f7ff0 NIS |
1086 | void |
1087 | Perl_boot_core_PerlIO(pTHX) | |
1088 | { | |
1089 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1090 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1091 | __FILE__); | |
0c4f7ff0 | 1092 | #endif |
14a5cf38 | 1093 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1094 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1095 | } |
e3f3bf95 NIS |
1096 | |
1097 | PerlIO_funcs * | |
1098 | PerlIO_default_layer(pTHX_ I32 n) | |
1099 | { | |
46c461b5 | 1100 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1101 | if (n < 0) |
1102 | n += av->cur; | |
27da23d5 | 1103 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1104 | } |
1105 | ||
a999f61b NIS |
1106 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1107 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1108 | |
1109 | void | |
1141d9f8 | 1110 | PerlIO_stdstreams(pTHX) |
60382766 | 1111 | { |
a1ea730d | 1112 | if (!PL_perlio) { |
8995e67d | 1113 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1114 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1115 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1116 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1117 | } | |
60382766 NIS |
1118 | } |
1119 | ||
1120 | PerlIO * | |
27da23d5 | 1121 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1122 | { |
16865ff7 | 1123 | VERIFY_HEAD(f); |
2dc2558e | 1124 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1125 | Perl_croak( aTHX_ |
5cf96513 RB |
1126 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1127 | "PerlIO layer function table size", (UV)tab->fsize, | |
1128 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1129 | } |
1130 | if (tab->size) { | |
b464bac0 | 1131 | PerlIOl *l; |
2dc2558e | 1132 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1133 | Perl_croak( aTHX_ |
5cf96513 RB |
1134 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1135 | "PerlIO layer instance size", (UV)tab->size, | |
1136 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1137 | } |
1138 | /* Real layer with a data area */ | |
002e75cf JH |
1139 | if (f) { |
1140 | char *temp; | |
1141 | Newxz(temp, tab->size, char); | |
1142 | l = (PerlIOl*)temp; | |
1143 | if (l) { | |
1144 | l->next = *f; | |
1145 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1146 | l->head = ((PerlIOl*)f)->head; |
002e75cf JH |
1147 | *f = l; |
1148 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1149 | (void*)f, tab->name, | |
1150 | (mode) ? mode : "(Null)", (void*)arg); | |
1151 | if (*l->tab->Pushed && | |
1152 | (*l->tab->Pushed) | |
1153 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1154 | PerlIO_pop(aTHX_ f); | |
1155 | return NULL; | |
1156 | } | |
2dc2558e | 1157 | } |
002e75cf JH |
1158 | else |
1159 | return NULL; | |
2dc2558e NIS |
1160 | } |
1161 | } | |
1162 | else if (f) { | |
1163 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1164 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1165 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1166 | if (tab->Pushed && |
27da23d5 | 1167 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1168 | return NULL; |
14a5cf38 JH |
1169 | } |
1170 | } | |
1171 | return f; | |
60382766 NIS |
1172 | } |
1173 | ||
81fe74fb LT |
1174 | PerlIO * |
1175 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1176 | IV n, const char *mode, int fd, int imode, int perm, | |
1177 | PerlIO *old, int narg, SV **args) | |
1178 | { | |
1179 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1180 | if (tab && tab->Open) { | |
1181 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1182 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1183 | PerlIO_close(ret); |
1184 | return NULL; | |
1185 | } | |
1186 | return ret; | |
1187 | } | |
1188 | SETERRNO(EINVAL, LIB_INVARG); | |
1189 | return NULL; | |
1190 | } | |
1191 | ||
dfebf958 | 1192 | IV |
86e05cf2 NIS |
1193 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1194 | { | |
1195 | if (PerlIOValid(f)) { | |
1196 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1197 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1198 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1199 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1200 | } | |
1201 | else { | |
1202 | /* Not suitable - pop it */ | |
1203 | PerlIO_pop(aTHX_ f); | |
1204 | } | |
1205 | return 0; | |
1206 | } | |
1207 | return -1; | |
1208 | } | |
1209 | ||
1210 | IV | |
2dc2558e | 1211 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1212 | { |
8772537c AL |
1213 | PERL_UNUSED_ARG(mode); |
1214 | PERL_UNUSED_ARG(arg); | |
1215 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1216 | |
04892f78 | 1217 | if (PerlIOValid(f)) { |
86e05cf2 | 1218 | PerlIO *t; |
de009b76 | 1219 | const PerlIOl *l; |
14a5cf38 | 1220 | PerlIO_flush(f); |
86e05cf2 NIS |
1221 | /* |
1222 | * Strip all layers that are not suitable for a raw stream | |
1223 | */ | |
1224 | t = f; | |
1225 | while (t && (l = *t)) { | |
cc6623a8 | 1226 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1227 | /* Has a handler - normal case */ |
9d97e8b8 | 1228 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1229 | if (*t == l) { |
1230 | /* Layer still there - move down a layer */ | |
1231 | t = PerlIONext(t); | |
1232 | } | |
1233 | } | |
1234 | else { | |
1235 | return -1; | |
1236 | } | |
14a5cf38 JH |
1237 | } |
1238 | else { | |
86e05cf2 NIS |
1239 | /* No handler - pop it */ |
1240 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1241 | } |
1242 | } | |
86e05cf2 | 1243 | if (PerlIOValid(f)) { |
cc6623a8 DM |
1244 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1245 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)"); | |
86e05cf2 NIS |
1246 | return 0; |
1247 | } | |
14a5cf38 JH |
1248 | } |
1249 | return -1; | |
dfebf958 NIS |
1250 | } |
1251 | ||
ac27b0f5 | 1252 | int |
14a5cf38 | 1253 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1254 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1255 | { |
14a5cf38 JH |
1256 | int code = 0; |
1257 | while (n < max) { | |
8772537c | 1258 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1259 | if (tab) { |
1260 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1261 | code = -1; | |
1262 | break; | |
1263 | } | |
1264 | } | |
1265 | n++; | |
1266 | } | |
1267 | return code; | |
e3f3bf95 NIS |
1268 | } |
1269 | ||
1270 | int | |
ac27b0f5 NIS |
1271 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1272 | { | |
14a5cf38 | 1273 | int code = 0; |
da0fccaa DG |
1274 | ENTER; |
1275 | save_scalar(PL_errgv); | |
53f1b6d2 | 1276 | if (f && names) { |
8772537c | 1277 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1278 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1279 | if (code == 0) { | |
d9dac8cd | 1280 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1281 | } |
3a1ee7e8 | 1282 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1283 | } |
da0fccaa | 1284 | LEAVE; |
14a5cf38 | 1285 | return code; |
ac27b0f5 NIS |
1286 | } |
1287 | ||
f3862f8b | 1288 | |
60382766 | 1289 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1290 | /* |
71200d45 | 1291 | * Given the abstraction above the public API functions |
14a5cf38 | 1292 | */ |
60382766 NIS |
1293 | |
1294 | int | |
f5b9d040 | 1295 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1296 | { |
68b5363f | 1297 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
cc6623a8 DM |
1298 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? |
1299 | PerlIOBase(f)->tab->name : "(Null)", | |
68b5363f PD |
1300 | iotype, mode, (names) ? names : "(Null)"); |
1301 | ||
03c0554d NIS |
1302 | if (names) { |
1303 | /* Do not flush etc. if (e.g.) switching encodings. | |
1304 | if a pushed layer knows it needs to flush lower layers | |
1305 | (for example :unix which is never going to call them) | |
1306 | it can do the flush when it is pushed. | |
1307 | */ | |
1308 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1309 | } | |
1310 | else { | |
86e05cf2 | 1311 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1312 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1313 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1314 | O_BINARY so we can look for it in mode. | |
1315 | */ | |
1316 | if (!(mode & O_BINARY)) { | |
1317 | /* Text mode */ | |
86e05cf2 NIS |
1318 | /* FIXME?: Looking down the layer stack seems wrong, |
1319 | but is a way of reaching past (say) an encoding layer | |
1320 | to flip CRLF-ness of the layer(s) below | |
1321 | */ | |
03c0554d NIS |
1322 | while (*f) { |
1323 | /* Perhaps we should turn on bottom-most aware layer | |
1324 | e.g. Ilya's idea that UNIX TTY could serve | |
1325 | */ | |
cc6623a8 DM |
1326 | if (PerlIOBase(f)->tab && |
1327 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1328 | { | |
03c0554d NIS |
1329 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1330 | /* Not in text mode - flush any pending stuff and flip it */ | |
1331 | PerlIO_flush(f); | |
1332 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1333 | } | |
1334 | /* Only need to turn it on in one layer so we are done */ | |
1335 | return TRUE; | |
ed53a2bb | 1336 | } |
03c0554d | 1337 | f = PerlIONext(f); |
14a5cf38 | 1338 | } |
03c0554d NIS |
1339 | /* Not finding a CRLF aware layer presumably means we are binary |
1340 | which is not what was requested - so we failed | |
1341 | We _could_ push :crlf layer but so could caller | |
1342 | */ | |
1343 | return FALSE; | |
14a5cf38 | 1344 | } |
6ce75a77 | 1345 | #endif |
86e05cf2 NIS |
1346 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1347 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1348 | */ |
a0714e2c | 1349 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1350 | } |
f5b9d040 NIS |
1351 | } |
1352 | ||
f5b9d040 | 1353 | int |
e87a358a | 1354 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1355 | { |
37725cdc | 1356 | if (PerlIOValid(f)) { |
46c461b5 | 1357 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1358 | if (tab && tab->Close) |
1359 | return (*tab->Close)(aTHX_ f); | |
1360 | else | |
1361 | return PerlIOBase_close(aTHX_ f); | |
1362 | } | |
14a5cf38 | 1363 | else { |
93189314 | 1364 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1365 | return -1; |
1366 | } | |
76ced9ad NIS |
1367 | } |
1368 | ||
b931b1d9 | 1369 | int |
e87a358a | 1370 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1371 | { |
de009b76 | 1372 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1373 | while (PerlIOValid(f)) { |
1374 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1375 | if (PerlIO_lockcnt(f)) |
1376 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1377 | f = PerlIONext(f); | |
f6c77cf1 | 1378 | } |
14a5cf38 | 1379 | return code; |
b931b1d9 NIS |
1380 | } |
1381 | ||
b931b1d9 | 1382 | int |
e87a358a | 1383 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1384 | { |
20b7effb | 1385 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1386 | } |
1387 | ||
1141d9f8 | 1388 | |
fcf2db38 | 1389 | static PerlIO_funcs * |
2edd7e44 NIS |
1390 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1391 | { | |
14a5cf38 | 1392 | /* |
71200d45 | 1393 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1394 | */ |
526fd1b4 | 1395 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1396 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1397 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1398 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1399 | if (!f) |
dcbac5bb | 1400 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1401 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1402 | return f; |
1403 | } | |
14a5cf38 JH |
1404 | |
1405 | /* | |
71200d45 | 1406 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1407 | */ |
1408 | switch (SvTYPE(sv)) { | |
1409 | case SVt_PVAV: | |
6a245ed1 | 1410 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1411 | case SVt_PVHV: |
6a245ed1 | 1412 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1413 | case SVt_PVCV: |
6a245ed1 | 1414 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1415 | case SVt_PVGV: |
6a245ed1 | 1416 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1417 | default: |
1418 | return NULL; | |
14a5cf38 | 1419 | } |
2edd7e44 NIS |
1420 | } |
1421 | ||
fcf2db38 | 1422 | PerlIO_list_t * |
14a5cf38 JH |
1423 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1424 | const char *mode, int narg, SV **args) | |
1425 | { | |
1426 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); | |
1427 | int incdef = 1; | |
a1ea730d | 1428 | if (!PL_perlio) |
14a5cf38 JH |
1429 | PerlIO_stdstreams(aTHX); |
1430 | if (narg) { | |
dcda55fc | 1431 | SV * const arg = *args; |
14a5cf38 | 1432 | /* |
71200d45 NIS |
1433 | * If it is a reference but not an object see if we have a handler |
1434 | * for it | |
14a5cf38 | 1435 | */ |
4e0ef342 | 1436 | if (SvROK(arg) && !SvOBJECT(SvRV(arg))) { |
46c461b5 | 1437 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1438 | if (handler) { |
3a1ee7e8 NIS |
1439 | def = PerlIO_list_alloc(aTHX); |
1440 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1441 | incdef = 0; |
1442 | } | |
1443 | /* | |
e934609f | 1444 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1445 | * something sensible else we will just stringfy and open |
71200d45 | 1446 | * resulting string. |
14a5cf38 JH |
1447 | */ |
1448 | } | |
1449 | } | |
9fe371da | 1450 | if (!layers || !*layers) |
11bcd5da | 1451 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1452 | if (layers && *layers) { |
1453 | PerlIO_list_t *av; | |
1454 | if (incdef) { | |
a951d81d | 1455 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1456 | } |
1457 | else { | |
1458 | av = def; | |
1459 | } | |
0cff2cf3 NIS |
1460 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1461 | return av; | |
1462 | } | |
1463 | else { | |
1464 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1465 | return NULL; |
0cff2cf3 | 1466 | } |
14a5cf38 JH |
1467 | } |
1468 | else { | |
1469 | if (incdef) | |
1470 | def->refcnt++; | |
1471 | return def; | |
1472 | } | |
ee518936 NIS |
1473 | } |
1474 | ||
1475 | PerlIO * | |
14a5cf38 JH |
1476 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1477 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1478 | { | |
1479 | if (!f && narg == 1 && *args == &PL_sv_undef) { | |
1480 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1481 | if (!layers || !*layers) |
11bcd5da | 1482 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1483 | if (layers && *layers) |
1484 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1485 | } | |
1486 | } | |
1487 | else { | |
de009b76 | 1488 | PerlIO_list_t *layera; |
14a5cf38 JH |
1489 | IV n; |
1490 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1491 | if (PerlIOValid(f)) { |
14a5cf38 | 1492 | /* |
71200d45 NIS |
1493 | * This is "reopen" - it is not tested as perl does not use it |
1494 | * yet | |
14a5cf38 JH |
1495 | */ |
1496 | PerlIOl *l = *f; | |
3a1ee7e8 | 1497 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1498 | while (l) { |
a951d81d | 1499 | SV *arg = NULL; |
cc6623a8 | 1500 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1501 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1502 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1503 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1504 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1505 | l = *PerlIONext(&l); |
1506 | } | |
1507 | } | |
1508 | else { | |
1509 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1510 | if (!layera) { |
1511 | return NULL; | |
1512 | } | |
14a5cf38 JH |
1513 | } |
1514 | /* | |
71200d45 | 1515 | * Start at "top" of layer stack |
14a5cf38 JH |
1516 | */ |
1517 | n = layera->cur - 1; | |
1518 | while (n >= 0) { | |
46c461b5 | 1519 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1520 | if (t && t->Open) { |
1521 | tab = t; | |
1522 | break; | |
1523 | } | |
1524 | n--; | |
1525 | } | |
1526 | if (tab) { | |
1527 | /* | |
71200d45 | 1528 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1529 | */ |
7cf31beb | 1530 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1531 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1532 | } |
14a5cf38 | 1533 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1534 | tab->name, layers ? layers : "(Null)", mode, fd, |
1535 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1536 | if (tab->Open) |
1537 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1538 | f, narg, args); | |
1539 | else { | |
1540 | SETERRNO(EINVAL, LIB_INVARG); | |
1541 | f = NULL; | |
1542 | } | |
14a5cf38 JH |
1543 | if (f) { |
1544 | if (n + 1 < layera->cur) { | |
1545 | /* | |
1546 | * More layers above the one that we used to open - | |
71200d45 | 1547 | * apply them now |
14a5cf38 | 1548 | */ |
d9dac8cd NIS |
1549 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1550 | /* If pushing layers fails close the file */ | |
1551 | PerlIO_close(f); | |
14a5cf38 JH |
1552 | f = NULL; |
1553 | } | |
1554 | } | |
1555 | } | |
1556 | } | |
3a1ee7e8 | 1557 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1558 | } |
1559 | return f; | |
ee518936 | 1560 | } |
b931b1d9 NIS |
1561 | |
1562 | ||
9e353e3b | 1563 | SSize_t |
e87a358a | 1564 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1565 | { |
7918f24d NC |
1566 | PERL_ARGS_ASSERT_PERLIO_READ; |
1567 | ||
b32dd47e | 1568 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1569 | } |
1570 | ||
313ca112 | 1571 | SSize_t |
e87a358a | 1572 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1573 | { |
7918f24d NC |
1574 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1575 | ||
b32dd47e | 1576 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1577 | } |
1578 | ||
9e353e3b | 1579 | SSize_t |
e87a358a | 1580 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1581 | { |
7918f24d NC |
1582 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1583 | ||
b32dd47e | 1584 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1585 | } |
1586 | ||
6f9d8c32 | 1587 | int |
e87a358a | 1588 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1589 | { |
b32dd47e | 1590 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1591 | } |
1592 | ||
9e353e3b | 1593 | Off_t |
e87a358a | 1594 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1595 | { |
b32dd47e | 1596 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1597 | } |
1598 | ||
6f9d8c32 | 1599 | int |
e87a358a | 1600 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1601 | { |
14a5cf38 JH |
1602 | if (f) { |
1603 | if (*f) { | |
de009b76 | 1604 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1605 | |
1606 | if (tab && tab->Flush) | |
f62ce20a | 1607 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1608 | else |
1609 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1610 | } |
1611 | else { | |
fe5a182c | 1612 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1613 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1614 | return -1; |
1615 | } | |
1616 | } | |
1617 | else { | |
1618 | /* | |
1619 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1620 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1621 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1622 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1623 | * decisions? --jhi |
14a5cf38 | 1624 | */ |
303f2dc3 DM |
1625 | PerlIOl **table = &PL_perlio; |
1626 | PerlIOl *ff; | |
14a5cf38 | 1627 | int code = 0; |
303f2dc3 | 1628 | while ((ff = *table)) { |
14a5cf38 | 1629 | int i; |
303f2dc3 | 1630 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1631 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1632 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1633 | code = -1; |
303f2dc3 | 1634 | ff++; |
14a5cf38 JH |
1635 | } |
1636 | } | |
1637 | return code; | |
1638 | } | |
760ac839 LW |
1639 | } |
1640 | ||
a9c883f6 | 1641 | void |
f62ce20a | 1642 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1643 | { |
303f2dc3 DM |
1644 | PerlIOl **table = &PL_perlio; |
1645 | PerlIOl *f; | |
14a5cf38 JH |
1646 | while ((f = *table)) { |
1647 | int i; | |
303f2dc3 | 1648 | table = (PerlIOl **) (f++); |
14a5cf38 | 1649 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1650 | if (f->next |
1651 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1652 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1653 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1654 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1655 | f++; |
1656 | } | |
a9c883f6 | 1657 | } |
a9c883f6 NIS |
1658 | } |
1659 | ||
06da4f11 | 1660 | int |
e87a358a | 1661 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1662 | { |
b32dd47e | 1663 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1664 | } |
1665 | ||
f3862f8b NIS |
1666 | int |
1667 | PerlIO_isutf8(PerlIO *f) | |
1668 | { | |
1b7a0411 JH |
1669 | if (PerlIOValid(f)) |
1670 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1671 | else | |
1672 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1673 | |
1b7a0411 | 1674 | return -1; |
f3862f8b NIS |
1675 | } |
1676 | ||
6f9d8c32 | 1677 | int |
e87a358a | 1678 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1679 | { |
b32dd47e | 1680 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1681 | } |
1682 | ||
9e353e3b | 1683 | int |
e87a358a | 1684 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1685 | { |
b32dd47e | 1686 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1687 | } |
1688 | ||
9e353e3b | 1689 | void |
e87a358a | 1690 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1691 | { |
b32dd47e | 1692 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1693 | } |
1694 | ||
9e353e3b | 1695 | void |
e87a358a | 1696 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1697 | { |
b32dd47e | 1698 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1699 | } |
1700 | ||
9e353e3b NIS |
1701 | int |
1702 | PerlIO_has_base(PerlIO *f) | |
1703 | { | |
1b7a0411 | 1704 | if (PerlIOValid(f)) { |
46c461b5 | 1705 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1706 | |
1707 | if (tab) | |
1708 | return (tab->Get_base != NULL); | |
1b7a0411 | 1709 | } |
1b7a0411 JH |
1710 | |
1711 | return 0; | |
760ac839 LW |
1712 | } |
1713 | ||
9e353e3b NIS |
1714 | int |
1715 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1716 | { |
d7dfc388 SK |
1717 | if (PerlIOValid(f)) { |
1718 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1719 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1720 | |
d7dfc388 SK |
1721 | if (tab) |
1722 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1723 | } |
14a5cf38 | 1724 | } |
1b7a0411 | 1725 | |
14a5cf38 | 1726 | return 0; |
9e353e3b NIS |
1727 | } |
1728 | ||
9e353e3b NIS |
1729 | int |
1730 | PerlIO_has_cntptr(PerlIO *f) | |
1731 | { | |
04892f78 | 1732 | if (PerlIOValid(f)) { |
46c461b5 | 1733 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1734 | |
1735 | if (tab) | |
1736 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1737 | } |
1b7a0411 | 1738 | |
14a5cf38 | 1739 | return 0; |
9e353e3b NIS |
1740 | } |
1741 | ||
9e353e3b NIS |
1742 | int |
1743 | PerlIO_canset_cnt(PerlIO *f) | |
1744 | { | |
04892f78 | 1745 | if (PerlIOValid(f)) { |
46c461b5 | 1746 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1747 | |
1748 | if (tab) | |
1749 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1750 | } |
1b7a0411 | 1751 | |
14a5cf38 | 1752 | return 0; |
760ac839 LW |
1753 | } |
1754 | ||
888911fc | 1755 | STDCHAR * |
e87a358a | 1756 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1757 | { |
b32dd47e | 1758 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1759 | } |
1760 | ||
b66f3475 | 1761 | SSize_t |
e87a358a | 1762 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1763 | { |
b66f3475 | 1764 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1765 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1766 | } |
1767 | ||
9e353e3b | 1768 | STDCHAR * |
e87a358a | 1769 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1770 | { |
b32dd47e | 1771 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1772 | } |
1773 | ||
b66f3475 | 1774 | SSize_t |
e87a358a | 1775 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1776 | { |
b32dd47e | 1777 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1778 | } |
1779 | ||
9e353e3b | 1780 | void |
b66f3475 | 1781 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1782 | { |
b32dd47e | 1783 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1784 | } |
1785 | ||
9e353e3b | 1786 | void |
b66f3475 | 1787 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1788 | { |
b32dd47e | 1789 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1790 | } |
1791 | ||
4ec2216f | 1792 | |
9e353e3b | 1793 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1794 | /* |
71200d45 | 1795 | * utf8 and raw dummy layers |
14a5cf38 | 1796 | */ |
dfebf958 | 1797 | |
26fb694e | 1798 | IV |
2dc2558e | 1799 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1800 | { |
96a5add6 | 1801 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1802 | PERL_UNUSED_ARG(mode); |
1803 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1804 | if (PerlIOValid(f)) { |
cc6623a8 | 1805 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1806 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1807 | else | |
1808 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1809 | return 0; | |
1810 | } | |
1811 | return -1; | |
26fb694e NIS |
1812 | } |
1813 | ||
27da23d5 | 1814 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1815 | sizeof(PerlIO_funcs), |
14a5cf38 | 1816 | "utf8", |
2dc2558e | 1817 | 0, |
a778d1f5 | 1818 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1819 | PerlIOUtf8_pushed, |
1820 | NULL, | |
c0888ace | 1821 | PerlIOBase_open, |
14a5cf38 JH |
1822 | NULL, |
1823 | NULL, | |
1824 | NULL, | |
1825 | NULL, | |
1826 | NULL, | |
1827 | NULL, | |
1828 | NULL, | |
1829 | NULL, | |
de009b76 AL |
1830 | NULL, |
1831 | NULL, | |
22569500 NIS |
1832 | NULL, /* flush */ |
1833 | NULL, /* fill */ | |
14a5cf38 JH |
1834 | NULL, |
1835 | NULL, | |
1836 | NULL, | |
1837 | NULL, | |
22569500 NIS |
1838 | NULL, /* get_base */ |
1839 | NULL, /* get_bufsiz */ | |
1840 | NULL, /* get_ptr */ | |
1841 | NULL, /* get_cnt */ | |
1842 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1843 | }; |
1844 | ||
27da23d5 | 1845 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1846 | sizeof(PerlIO_funcs), |
14a5cf38 | 1847 | "bytes", |
2dc2558e | 1848 | 0, |
a778d1f5 | 1849 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1850 | PerlIOUtf8_pushed, |
1851 | NULL, | |
c0888ace | 1852 | PerlIOBase_open, |
14a5cf38 JH |
1853 | NULL, |
1854 | NULL, | |
1855 | NULL, | |
1856 | NULL, | |
1857 | NULL, | |
1858 | NULL, | |
1859 | NULL, | |
1860 | NULL, | |
de009b76 AL |
1861 | NULL, |
1862 | NULL, | |
22569500 NIS |
1863 | NULL, /* flush */ |
1864 | NULL, /* fill */ | |
14a5cf38 JH |
1865 | NULL, |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
22569500 NIS |
1869 | NULL, /* get_base */ |
1870 | NULL, /* get_bufsiz */ | |
1871 | NULL, /* get_ptr */ | |
1872 | NULL, /* get_cnt */ | |
1873 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1874 | }; |
1875 | ||
27da23d5 | 1876 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1877 | sizeof(PerlIO_funcs), |
14a5cf38 | 1878 | "raw", |
2dc2558e | 1879 | 0, |
14a5cf38 JH |
1880 | PERLIO_K_DUMMY, |
1881 | PerlIORaw_pushed, | |
1882 | PerlIOBase_popped, | |
ecfd0649 | 1883 | PerlIOBase_open, |
14a5cf38 JH |
1884 | NULL, |
1885 | NULL, | |
1886 | NULL, | |
1887 | NULL, | |
1888 | NULL, | |
1889 | NULL, | |
1890 | NULL, | |
1891 | NULL, | |
de009b76 AL |
1892 | NULL, |
1893 | NULL, | |
22569500 NIS |
1894 | NULL, /* flush */ |
1895 | NULL, /* fill */ | |
14a5cf38 JH |
1896 | NULL, |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
22569500 NIS |
1900 | NULL, /* get_base */ |
1901 | NULL, /* get_bufsiz */ | |
1902 | NULL, /* get_ptr */ | |
1903 | NULL, /* get_cnt */ | |
1904 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1905 | }; |
1906 | /*--------------------------------------------------------------------------------------*/ | |
1907 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1908 | /* |
71200d45 | 1909 | * "Methods" of the "base class" |
14a5cf38 | 1910 | */ |
9e353e3b NIS |
1911 | |
1912 | IV | |
f62ce20a | 1913 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1914 | { |
04892f78 | 1915 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1916 | } |
1917 | ||
f5b9d040 | 1918 | char * |
81428673 | 1919 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1920 | { |
1921 | char *s = buf; | |
81428673 | 1922 | if (PerlIOValid(f)) { |
de009b76 | 1923 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1924 | if (flags & PERLIO_F_APPEND) { |
1925 | *s++ = 'a'; | |
1926 | if (flags & PERLIO_F_CANREAD) { | |
1927 | *s++ = '+'; | |
1928 | } | |
14a5cf38 | 1929 | } |
81428673 NIS |
1930 | else if (flags & PERLIO_F_CANREAD) { |
1931 | *s++ = 'r'; | |
1932 | if (flags & PERLIO_F_CANWRITE) | |
1933 | *s++ = '+'; | |
1934 | } | |
1935 | else if (flags & PERLIO_F_CANWRITE) { | |
1936 | *s++ = 'w'; | |
1937 | if (flags & PERLIO_F_CANREAD) { | |
1938 | *s++ = '+'; | |
1939 | } | |
14a5cf38 | 1940 | } |
35990314 | 1941 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1942 | if (!(flags & PERLIO_F_CRLF)) |
1943 | *s++ = 'b'; | |
5f1a76d0 | 1944 | #endif |
81428673 | 1945 | } |
14a5cf38 JH |
1946 | *s = '\0'; |
1947 | return buf; | |
f5b9d040 NIS |
1948 | } |
1949 | ||
81428673 | 1950 | |
76ced9ad | 1951 | IV |
2dc2558e | 1952 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1953 | { |
de009b76 | 1954 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1955 | PERL_UNUSED_CONTEXT; |
8772537c | 1956 | PERL_UNUSED_ARG(arg); |
de009b76 | 1957 | |
14a5cf38 JH |
1958 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1959 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 1960 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
1961 | l->flags |= PERLIO_F_FASTGETS; |
1962 | if (mode) { | |
3b6c1aba | 1963 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
1964 | mode++; |
1965 | switch (*mode++) { | |
1966 | case 'r': | |
1967 | l->flags |= PERLIO_F_CANREAD; | |
1968 | break; | |
1969 | case 'a': | |
1970 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
1971 | break; | |
1972 | case 'w': | |
1973 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
1974 | break; | |
1975 | default: | |
93189314 | 1976 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1977 | return -1; |
1978 | } | |
1979 | while (*mode) { | |
1980 | switch (*mode++) { | |
1981 | case '+': | |
1982 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
1983 | break; | |
1984 | case 'b': | |
1985 | l->flags &= ~PERLIO_F_CRLF; | |
1986 | break; | |
1987 | case 't': | |
1988 | l->flags |= PERLIO_F_CRLF; | |
1989 | break; | |
1990 | default: | |
93189314 | 1991 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1992 | return -1; |
1993 | } | |
1994 | } | |
1995 | } | |
1996 | else { | |
1997 | if (l->next) { | |
1998 | l->flags |= l->next->flags & | |
1999 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2000 | PERLIO_F_APPEND); | |
2001 | } | |
2002 | } | |
5e2ab84b | 2003 | #if 0 |
14a5cf38 | 2004 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2005 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2006 | l->flags, PerlIO_modestr(f, temp)); |
5e2ab84b | 2007 | #endif |
14a5cf38 | 2008 | return 0; |
76ced9ad NIS |
2009 | } |
2010 | ||
2011 | IV | |
f62ce20a | 2012 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2013 | { |
96a5add6 | 2014 | PERL_UNUSED_CONTEXT; |
8772537c | 2015 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2016 | return 0; |
760ac839 LW |
2017 | } |
2018 | ||
9e353e3b | 2019 | SSize_t |
f62ce20a | 2020 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2021 | { |
14a5cf38 | 2022 | /* |
71200d45 | 2023 | * Save the position as current head considers it |
14a5cf38 | 2024 | */ |
de009b76 | 2025 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2026 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2027 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2028 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2029 | } |
2030 | ||
f6c77cf1 | 2031 | SSize_t |
f62ce20a | 2032 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2033 | { |
14a5cf38 JH |
2034 | STDCHAR *buf = (STDCHAR *) vbuf; |
2035 | if (f) { | |
263df5f1 JH |
2036 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2037 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2038 | SETERRNO(EBADF, SS_IVCHAN); | |
0ea86a10 | 2039 | PerlIO_save_errno(f); |
263df5f1 JH |
2040 | return 0; |
2041 | } | |
14a5cf38 | 2042 | while (count > 0) { |
93c2c2ec IZ |
2043 | get_cnt: |
2044 | { | |
14a5cf38 JH |
2045 | SSize_t avail = PerlIO_get_cnt(f); |
2046 | SSize_t take = 0; | |
2047 | if (avail > 0) | |
94e529cc | 2048 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2049 | if (take > 0) { |
2050 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2051 | Copy(ptr, buf, take, STDCHAR); | |
2052 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2053 | count -= take; | |
2054 | buf += take; | |
93c2c2ec IZ |
2055 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2056 | goto get_cnt; | |
14a5cf38 JH |
2057 | } |
2058 | if (count > 0 && avail <= 0) { | |
2059 | if (PerlIO_fill(f) != 0) | |
2060 | break; | |
2061 | } | |
93c2c2ec | 2062 | } |
14a5cf38 JH |
2063 | } |
2064 | return (buf - (STDCHAR *) vbuf); | |
2065 | } | |
f6c77cf1 | 2066 | return 0; |
f6c77cf1 NIS |
2067 | } |
2068 | ||
9e353e3b | 2069 | IV |
f62ce20a | 2070 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2071 | { |
96a5add6 | 2072 | PERL_UNUSED_CONTEXT; |
8772537c | 2073 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2074 | return 0; |
9e353e3b NIS |
2075 | } |
2076 | ||
2077 | IV | |
f62ce20a | 2078 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2079 | { |
96a5add6 | 2080 | PERL_UNUSED_CONTEXT; |
8772537c | 2081 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2082 | return -1; |
06da4f11 NIS |
2083 | } |
2084 | ||
2085 | IV | |
f62ce20a | 2086 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2087 | { |
37725cdc NIS |
2088 | IV code = -1; |
2089 | if (PerlIOValid(f)) { | |
2090 | PerlIO *n = PerlIONext(f); | |
2091 | code = PerlIO_flush(f); | |
2092 | PerlIOBase(f)->flags &= | |
2093 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2094 | while (PerlIOValid(n)) { | |
de009b76 | 2095 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2096 | if (tab && tab->Close) { |
2097 | if ((*tab->Close)(aTHX_ n) != 0) | |
2098 | code = -1; | |
2099 | break; | |
2100 | } | |
2101 | else { | |
2102 | PerlIOBase(n)->flags &= | |
2103 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2104 | } | |
2105 | n = PerlIONext(n); | |
2106 | } | |
2107 | } | |
2108 | else { | |
2109 | SETERRNO(EBADF, SS_IVCHAN); | |
2110 | } | |
14a5cf38 | 2111 | return code; |
9e353e3b NIS |
2112 | } |
2113 | ||
2114 | IV | |
f62ce20a | 2115 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2116 | { |
96a5add6 | 2117 | PERL_UNUSED_CONTEXT; |
04892f78 | 2118 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2119 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2120 | } | |
2121 | return 1; | |
9e353e3b NIS |
2122 | } |
2123 | ||
2124 | IV | |
f62ce20a | 2125 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2126 | { |
96a5add6 | 2127 | PERL_UNUSED_CONTEXT; |
04892f78 | 2128 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2129 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2130 | } | |
2131 | return 1; | |
9e353e3b NIS |
2132 | } |
2133 | ||
2134 | void | |
f62ce20a | 2135 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2136 | { |
04892f78 | 2137 | if (PerlIOValid(f)) { |
dcda55fc | 2138 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2139 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2140 | if (PerlIOValid(n)) |
14a5cf38 JH |
2141 | PerlIO_clearerr(n); |
2142 | } | |
9e353e3b NIS |
2143 | } |
2144 | ||
2145 | void | |
f62ce20a | 2146 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2147 | { |
96a5add6 | 2148 | PERL_UNUSED_CONTEXT; |
04892f78 | 2149 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2150 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2151 | } | |
9e353e3b NIS |
2152 | } |
2153 | ||
93a8090d NIS |
2154 | SV * |
2155 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2156 | { | |
2157 | if (!arg) | |
a0714e2c | 2158 | return NULL; |
24d147a6 | 2159 | #ifdef USE_ITHREADS |
93a8090d | 2160 | if (param) { |
a951d81d BL |
2161 | arg = sv_dup(arg, param); |
2162 | SvREFCNT_inc_simple_void_NN(arg); | |
2163 | return arg; | |
93a8090d NIS |
2164 | } |
2165 | else { | |
2166 | return newSVsv(arg); | |
2167 | } | |
2168 | #else | |
1b6737cc | 2169 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2170 | return newSVsv(arg); |
2171 | #endif | |
2172 | } | |
2173 | ||
2174 | PerlIO * | |
ecdeb87c | 2175 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2176 | { |
1b6737cc | 2177 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2178 | if (PerlIOValid(nexto)) { |
de009b76 | 2179 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2180 | if (tab && tab->Dup) |
2181 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2182 | else | |
2183 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2184 | } |
2185 | if (f) { | |
dcda55fc | 2186 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2187 | SV *arg = NULL; |
93a8090d | 2188 | char buf[8]; |
316ebaf2 | 2189 | assert(self); |
fe5a182c | 2190 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
27e6dabe | 2191 | self->name, |
cc6623a8 | 2192 | (void*)f, (void*)o, (void*)param); |
27e6dabe JH |
2193 | if (self->Getarg) |
2194 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2195 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2196 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2197 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2198 | SvREFCNT_dec(arg); |
93a8090d NIS |
2199 | } |
2200 | return f; | |
2201 | } | |
2202 | ||
27da23d5 | 2203 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2204 | |
8b84d7dd | 2205 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 | 2206 | static void |
ff25d7bc JH |
2207 | S_more_refcounted_fds(pTHX_ const int new_fd) |
2208 | PERL_TSA_REQUIRES(PL_perlio_mutex) | |
2209 | { | |
7a89be66 | 2210 | dVAR; |
22c96fc1 | 2211 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2212 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2213 | int *new_array; |
2214 | ||
dd791c72 JH |
2215 | #ifndef PERL_IMPLICIT_SYS |
2216 | PERL_UNUSED_CONTEXT; | |
2217 | #endif | |
2218 | ||
22c96fc1 NC |
2219 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", |
2220 | old_max, new_fd, new_max); | |
2221 | ||
2222 | if (new_fd < old_max) { | |
2223 | return; | |
2224 | } | |
2225 | ||
f4ae5be6 NC |
2226 | assert (new_max > new_fd); |
2227 | ||
eae082a0 JH |
2228 | /* Use plain realloc() since we need this memory to be really |
2229 | * global and visible to all the interpreters and/or threads. */ | |
2230 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2231 | |
2232 | if (!new_array) { | |
8b84d7dd | 2233 | #ifdef USE_ITHREADS |
6cb8cb21 | 2234 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2235 | #endif |
4cbe3a7d | 2236 | croak_no_mem(); |
22c96fc1 NC |
2237 | } |
2238 | ||
2239 | PL_perlio_fd_refcnt_size = new_max; | |
2240 | PL_perlio_fd_refcnt = new_array; | |
2241 | ||
95b63a38 JH |
2242 | PerlIO_debug("Zeroing %p, %d\n", |
2243 | (void*)(new_array + old_max), | |
2244 | new_max - old_max); | |
22c96fc1 NC |
2245 | |
2246 | Zero(new_array + old_max, new_max - old_max, int); | |
2247 | } | |
2248 | ||
2249 | ||
93a8090d NIS |
2250 | void |
2251 | PerlIO_init(pTHX) | |
2252 | { | |
8b84d7dd | 2253 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2254 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2255 | } |
2256 | ||
168d5872 NIS |
2257 | void |
2258 | PerlIOUnix_refcnt_inc(int fd) | |
2259 | { | |
27da23d5 | 2260 | dTHX; |
22c96fc1 | 2261 | if (fd >= 0) { |
97aff369 | 2262 | dVAR; |
22c96fc1 | 2263 | |
8b84d7dd | 2264 | #ifdef USE_ITHREADS |
6cb8cb21 | 2265 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2266 | #endif |
22c96fc1 NC |
2267 | if (fd >= PL_perlio_fd_refcnt_size) |
2268 | S_more_refcounted_fds(aTHX_ fd); | |
2269 | ||
27da23d5 | 2270 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2271 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2272 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2273 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2274 | fd, PL_perlio_fd_refcnt[fd]); | |
2275 | } | |
2276 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2277 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2278 | |
8b84d7dd | 2279 | #ifdef USE_ITHREADS |
6cb8cb21 | 2280 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2281 | #endif |
8b84d7dd | 2282 | } else { |
12605ff9 | 2283 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2284 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2285 | } |
2286 | } | |
2287 | ||
168d5872 NIS |
2288 | int |
2289 | PerlIOUnix_refcnt_dec(int fd) | |
2290 | { | |
2291 | int cnt = 0; | |
22c96fc1 | 2292 | if (fd >= 0) { |
97aff369 | 2293 | dVAR; |
8b84d7dd | 2294 | #ifdef USE_ITHREADS |
6cb8cb21 | 2295 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2296 | #endif |
8b84d7dd | 2297 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2298 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2299 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2300 | fd, PL_perlio_fd_refcnt_size); |
2301 | } | |
2302 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2303 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2304 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2305 | fd, PL_perlio_fd_refcnt[fd]); |
2306 | } | |
27da23d5 | 2307 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2308 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2309 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2310 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2311 | #endif |
8b84d7dd | 2312 | } else { |
12605ff9 | 2313 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2314 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2315 | } |
2316 | return cnt; | |
2317 | } | |
2318 | ||
2e0cfa16 FC |
2319 | int |
2320 | PerlIOUnix_refcnt(int fd) | |
2321 | { | |
2322 | dTHX; | |
2323 | int cnt = 0; | |
2324 | if (fd >= 0) { | |
2325 | dVAR; | |
2326 | #ifdef USE_ITHREADS | |
2327 | MUTEX_LOCK(&PL_perlio_mutex); | |
2328 | #endif | |
2329 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2330 | /* diag_listed_as: refcnt: fd %d%s */ | |
2331 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2332 | fd, PL_perlio_fd_refcnt_size); | |
2333 | } | |
2334 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2335 | /* diag_listed_as: refcnt: fd %d%s */ | |
2336 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2337 | fd, PL_perlio_fd_refcnt[fd]); | |
2338 | } | |
2339 | cnt = PL_perlio_fd_refcnt[fd]; | |
2340 | #ifdef USE_ITHREADS | |
2341 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2342 | #endif | |
2343 | } else { | |
2344 | /* diag_listed_as: refcnt: fd %d%s */ | |
2345 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2346 | } | |
2347 | return cnt; | |
2348 | } | |
2349 | ||
694c95cf JH |
2350 | void |
2351 | PerlIO_cleanup(pTHX) | |
2352 | { | |
2353 | int i; | |
2354 | #ifdef USE_ITHREADS | |
a25429c6 | 2355 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2356 | #else |
2357 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2358 | #endif |
e47547a8 | 2359 | |
694c95cf JH |
2360 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2361 | for (i=0; i < 3; i++) | |
2362 | PerlIOUnix_refcnt_inc(i); | |
2363 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2364 | /* Restore STDIN..STDERR refcount */ | |
2365 | for (i=0; i < 3; i++) | |
2366 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2367 | |
2368 | if (PL_known_layers) { | |
2369 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2370 | PL_known_layers = NULL; | |
2371 | } | |
27da23d5 | 2372 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2373 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2374 | PL_def_layerlist = NULL; | |
2375 | } | |
6cb8cb21 RGS |
2376 | } |
2377 | ||
0934c9d9 | 2378 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2379 | { |
53d44271 | 2380 | dVAR; |
4f3da17a DM |
2381 | #if 0 |
2382 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2383 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2384 | being present (at least in win32) :-(. | |
2385 | Disable for now. | |
2386 | */ | |
6cb8cb21 RGS |
2387 | #ifdef DEBUGGING |
2388 | { | |
2389 | /* By now all filehandles should have been closed, so any | |
2390 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2391 | * errors. */ | |
77db880c JH |
2392 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2393 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2394 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2395 | int i; |
2396 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2397 | if (PL_perlio_fd_refcnt[i]) { |
2398 | const STRLEN len = | |
2399 | my_snprintf(buf, sizeof(buf), | |
2400 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2401 | i, PL_perlio_fd_refcnt[i]); | |
2402 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2403 | } | |
6cb8cb21 RGS |
2404 | } |
2405 | } | |
2406 | #endif | |
4f3da17a | 2407 | #endif |
eae082a0 JH |
2408 | /* Not bothering with PL_perlio_mutex since by now |
2409 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2410 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2411 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2412 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2413 | PL_perlio_fd_refcnt = NULL; |
2414 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2415 | } |
694c95cf JH |
2416 | } |
2417 | ||
9e353e3b | 2418 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2419 | /* |
71200d45 | 2420 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2421 | */ |
9e353e3b | 2422 | |
14a5cf38 | 2423 | typedef struct { |
22569500 NIS |
2424 | struct _PerlIO base; /* The generic part */ |
2425 | int fd; /* UNIX like file descriptor */ | |
2426 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2427 | } PerlIOUnix; |
2428 | ||
abf9167d DM |
2429 | static void |
2430 | S_lockcnt_dec(pTHX_ const void* f) | |
2431 | { | |
dd791c72 JH |
2432 | #ifndef PERL_IMPLICIT_SYS |
2433 | PERL_UNUSED_CONTEXT; | |
2434 | #endif | |
abf9167d DM |
2435 | PerlIO_lockcnt((PerlIO*)f)--; |
2436 | } | |
2437 | ||
2438 | ||
2439 | /* call the signal handler, and if that handler happens to clear | |
2440 | * this handle, free what we can and return true */ | |
2441 | ||
2442 | static bool | |
2443 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2444 | ENTER; | |
2445 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2446 | PerlIO_lockcnt(f)++; | |
2447 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2448 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2449 | LEAVE; | |
abf9167d | 2450 | return 0; |
be48bbe8 | 2451 | } |
abf9167d DM |
2452 | /* we've just run some perl-level code that could have done |
2453 | * anything, including closing the file or clearing this layer. | |
2454 | * If so, free any lower layers that have already been | |
2455 | * cleared, then return an error. */ | |
2456 | while (PerlIOValid(f) && | |
2457 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2458 | { | |
2459 | const PerlIOl *l = *f; | |
2460 | *f = l->next; | |
2461 | Safefree(l); | |
2462 | } | |
be48bbe8 | 2463 | LEAVE; |
abf9167d DM |
2464 | return 1; |
2465 | } | |
2466 | ||
6f9d8c32 | 2467 | int |
9e353e3b | 2468 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2469 | { |
14a5cf38 | 2470 | int oflags = -1; |
3b6c1aba | 2471 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2472 | mode++; |
2473 | switch (*mode) { | |
2474 | case 'r': | |
2475 | oflags = O_RDONLY; | |
2476 | if (*++mode == '+') { | |
2477 | oflags = O_RDWR; | |
2478 | mode++; | |
2479 | } | |
2480 | break; | |
2481 | ||
2482 | case 'w': | |
2483 | oflags = O_CREAT | O_TRUNC; | |
2484 | if (*++mode == '+') { | |
2485 | oflags |= O_RDWR; | |
2486 | mode++; | |
2487 | } | |
2488 | else | |
2489 | oflags |= O_WRONLY; | |
2490 | break; | |
2491 | ||
2492 | case 'a': | |
2493 | oflags = O_CREAT | O_APPEND; | |
2494 | if (*++mode == '+') { | |
2495 | oflags |= O_RDWR; | |
2496 | mode++; | |
2497 | } | |
2498 | else | |
2499 | oflags |= O_WRONLY; | |
2500 | break; | |
2501 | } | |
43e5477e JH |
2502 | |
2503 | /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */ | |
2504 | ||
2505 | /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one | |
2506 | * of them in, and then bit-and-masking the other them away, won't | |
2507 | * have much of an effect. */ | |
2508 | switch (*mode) { | |
2509 | case 'b': | |
2510 | #if O_TEXT != O_BINARY | |
2511 | oflags |= O_BINARY; | |
14a5cf38 | 2512 | oflags &= ~O_TEXT; |
43e5477e JH |
2513 | #endif |
2514 | mode++; | |
2515 | break; | |
2516 | case 't': | |
2517 | #if O_TEXT != O_BINARY | |
14a5cf38 JH |
2518 | oflags |= O_TEXT; |
2519 | oflags &= ~O_BINARY; | |
43e5477e JH |
2520 | #endif |
2521 | mode++; | |
2522 | break; | |
2523 | default: | |
2524 | # if O_BINARY != 0 | |
2525 | /* bit-or:ing with zero O_BINARY would be useless. */ | |
93f31ee9 PG |
2526 | /* |
2527 | * If neither "t" nor "b" was specified, open the file | |
2528 | * in O_BINARY mode. | |
43e5477e JH |
2529 | * |
2530 | * Note that if something else than the zero byte was seen | |
2531 | * here (e.g. bogus mode "rx"), just few lines later we will | |
2532 | * set the errno and invalidate the flags. | |
93f31ee9 PG |
2533 | */ |
2534 | oflags |= O_BINARY; | |
43e5477e JH |
2535 | # endif |
2536 | break; | |
93f31ee9 | 2537 | } |
14a5cf38 | 2538 | if (*mode || oflags == -1) { |
93189314 | 2539 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2540 | oflags = -1; |
2541 | } | |
2542 | return oflags; | |
9e353e3b NIS |
2543 | } |
2544 | ||
2545 | IV | |
f62ce20a | 2546 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2547 | { |
96a5add6 | 2548 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2549 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2550 | } |
2551 | ||
aa063c35 NIS |
2552 | static void |
2553 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2554 | { |
de009b76 | 2555 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2556 | #if defined(WIN32) |
aa063c35 NIS |
2557 | Stat_t st; |
2558 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2559 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2560 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2561 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2562 | } | |
aa063c35 NIS |
2563 | else { |
2564 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2565 | } | |
6caa5a9c NIS |
2566 | } |
2567 | #endif | |
aa063c35 NIS |
2568 | s->fd = fd; |
2569 | s->oflags = imode; | |
2570 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2571 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2572 | } |
2573 | ||
2574 | IV | |
2575 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2576 | { | |
2577 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2578 | if (*PerlIONext(f)) { |
4b069b44 | 2579 | /* We never call down so do any pending stuff now */ |
03c0554d | 2580 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2581 | /* |
71200d45 | 2582 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2583 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2584 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2585 | */ |
acbd16bf | 2586 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2587 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2588 | } |
2589 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2590 | |
14a5cf38 | 2591 | return code; |
4b803d04 NIS |
2592 | } |
2593 | ||
c2fcde81 JH |
2594 | IV |
2595 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2596 | { | |
de009b76 | 2597 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2598 | Off_t new_loc; |
96a5add6 | 2599 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2600 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2601 | #ifdef ESPIPE | |
2602 | SETERRNO(ESPIPE, LIB_INVARG); | |
2603 | #else | |
2604 | SETERRNO(EINVAL, LIB_INVARG); | |
2605 | #endif | |
2606 | return -1; | |
2607 | } | |
0723351e NC |
2608 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2609 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2610 | return -1; |
c2fcde81 JH |
2611 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2612 | return 0; | |
2613 | } | |
2614 | ||
9e353e3b | 2615 | PerlIO * |
14a5cf38 JH |
2616 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2617 | IV n, const char *mode, int fd, int imode, | |
2618 | int perm, PerlIO *f, int narg, SV **args) | |
2619 | { | |
d9dac8cd | 2620 | if (PerlIOValid(f)) { |
cc6623a8 | 2621 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2622 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2623 | } |
2624 | if (narg > 0) { | |
3b6c1aba | 2625 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2626 | mode++; |
2627 | else { | |
2628 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2629 | #ifdef VMS |
2630 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2631 | #else | |
14a5cf38 | 2632 | perm = 0666; |
5e2ce0f3 | 2633 | #endif |
14a5cf38 JH |
2634 | } |
2635 | if (imode != -1) { | |
41188aa0 TC |
2636 | STRLEN len; |
2637 | const char *path = SvPV_const(*args, len); | |
2638 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2639 | return NULL; |
14a5cf38 JH |
2640 | fd = PerlLIO_open3(path, imode, perm); |
2641 | } | |
2642 | } | |
2643 | if (fd >= 0) { | |
3b6c1aba | 2644 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2645 | mode++; |
2646 | if (!f) { | |
2647 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2648 | } |
2649 | if (!PerlIOValid(f)) { | |
a33cf58c | 2650 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2651 | PerlLIO_close(fd); |
a33cf58c NIS |
2652 | return NULL; |
2653 | } | |
d9dac8cd | 2654 | } |
aa063c35 | 2655 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2656 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2657 | if (*mode == IoTYPE_APPEND) |
2658 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2659 | return f; |
2660 | } | |
2661 | else { | |
2662 | if (f) { | |
6f207bd3 | 2663 | NOOP; |
14a5cf38 | 2664 | /* |
71200d45 | 2665 | * FIXME: pop layers ??? |
14a5cf38 JH |
2666 | */ |
2667 | } | |
2668 | return NULL; | |
2669 | } | |
9e353e3b NIS |
2670 | } |
2671 | ||
71200d45 | 2672 | PerlIO * |
ecdeb87c | 2673 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2674 | { |
dcda55fc | 2675 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2676 | int fd = os->fd; |
ecdeb87c NIS |
2677 | if (flags & PERLIO_DUP_FD) { |
2678 | fd = PerlLIO_dup(fd); | |
2679 | } | |
22c96fc1 | 2680 | if (fd >= 0) { |
ecdeb87c | 2681 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2682 | if (f) { |
2683 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2684 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2685 | return f; |
2686 | } | |
0a20f69b | 2687 | PerlLIO_close(fd); |
71200d45 NIS |
2688 | } |
2689 | return NULL; | |
2690 | } | |
2691 | ||
2692 | ||
9e353e3b | 2693 | SSize_t |
f62ce20a | 2694 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2695 | { |
abf9167d DM |
2696 | int fd; |
2697 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2698 | return -1; | |
2699 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2700 | #ifdef PERLIO_STD_SPECIAL |
2701 | if (fd == 0) | |
2702 | return PERLIO_STD_IN(fd, vbuf, count); | |
2703 | #endif | |
81428673 | 2704 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2705 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2706 | return 0; |
1fd8f4ce | 2707 | } |
14a5cf38 | 2708 | while (1) { |
b464bac0 | 2709 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2710 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2711 | if (len < 0) { |
2712 | if (errno != EAGAIN) { | |
2713 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2714 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2715 | } |
2716 | } | |
2717 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2718 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2719 | SETERRNO(0,0); |
2720 | } | |
14a5cf38 JH |
2721 | return len; |
2722 | } | |
abf9167d DM |
2723 | /* EINTR */ |
2724 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2725 | return -1; | |
14a5cf38 | 2726 | } |
e5964223 | 2727 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2728 | } |
2729 | ||
2730 | SSize_t | |
f62ce20a | 2731 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2732 | { |
abf9167d DM |
2733 | int fd; |
2734 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2735 | return -1; | |
2736 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2737 | #ifdef PERLIO_STD_SPECIAL |
2738 | if (fd == 1 || fd == 2) | |
2739 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2740 | #endif | |
14a5cf38 | 2741 | while (1) { |
de009b76 | 2742 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2743 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2744 | if (len < 0) { |
2745 | if (errno != EAGAIN) { | |
2746 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2747 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2748 | } |
2749 | } | |
14a5cf38 JH |
2750 | return len; |
2751 | } | |
abf9167d DM |
2752 | /* EINTR */ |
2753 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2754 | return -1; | |
06da4f11 | 2755 | } |
e5964223 | 2756 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2757 | } |
2758 | ||
9e353e3b | 2759 | Off_t |
f62ce20a | 2760 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2761 | { |
96a5add6 AL |
2762 | PERL_UNUSED_CONTEXT; |
2763 | ||
14a5cf38 | 2764 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2765 | } |
2766 | ||
2556f95e GF |
2767 | |
2768 | IV | |
2376d97d | 2769 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2770 | { |
de009b76 | 2771 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2772 | int code = 0; |
168d5872 NIS |
2773 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2774 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2775 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2776 | return 0; | |
22569500 | 2777 | } |
93a8090d NIS |
2778 | } |
2779 | else { | |
93189314 | 2780 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2781 | return -1; |
2782 | } | |
14a5cf38 JH |
2783 | while (PerlLIO_close(fd) != 0) { |
2784 | if (errno != EINTR) { | |
2785 | code = -1; | |
2786 | break; | |
2787 | } | |
abf9167d DM |
2788 | /* EINTR */ |
2789 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2790 | return -1; | |
14a5cf38 JH |
2791 | } |
2792 | if (code == 0) { | |
2793 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2794 | } | |
2795 | return code; | |
9e353e3b NIS |
2796 | } |
2797 | ||
27da23d5 | 2798 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2799 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2800 | "unix", |
2801 | sizeof(PerlIOUnix), | |
2802 | PERLIO_K_RAW, | |
2803 | PerlIOUnix_pushed, | |
2376d97d | 2804 | PerlIOBase_popped, |
14a5cf38 | 2805 | PerlIOUnix_open, |
86e05cf2 | 2806 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2807 | NULL, |
2808 | PerlIOUnix_fileno, | |
71200d45 | 2809 | PerlIOUnix_dup, |
14a5cf38 JH |
2810 | PerlIOUnix_read, |
2811 | PerlIOBase_unread, | |
2812 | PerlIOUnix_write, | |
2813 | PerlIOUnix_seek, | |
2814 | PerlIOUnix_tell, | |
2815 | PerlIOUnix_close, | |
22569500 NIS |
2816 | PerlIOBase_noop_ok, /* flush */ |
2817 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2818 | PerlIOBase_eof, |
2819 | PerlIOBase_error, | |
2820 | PerlIOBase_clearerr, | |
2821 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2822 | NULL, /* get_base */ |
2823 | NULL, /* get_bufsiz */ | |
2824 | NULL, /* get_ptr */ | |
2825 | NULL, /* get_cnt */ | |
2826 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2827 | }; |
2828 | ||
2829 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2830 | /* |
71200d45 | 2831 | * stdio as a layer |
14a5cf38 | 2832 | */ |
9e353e3b | 2833 | |
313e59c8 NIS |
2834 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2835 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2836 | broken by the last second glibc 2.3 fix | |
2837 | */ | |
2838 | #define STDIO_BUFFER_WRITABLE | |
2839 | #endif | |
2840 | ||
2841 | ||
14a5cf38 JH |
2842 | typedef struct { |
2843 | struct _PerlIO base; | |
22569500 | 2844 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2845 | } PerlIOStdio; |
2846 | ||
2847 | IV | |
f62ce20a | 2848 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2849 | { |
96a5add6 AL |
2850 | PERL_UNUSED_CONTEXT; |
2851 | ||
c4420975 AL |
2852 | if (PerlIOValid(f)) { |
2853 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2854 | if (s) | |
2855 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2856 | } |
2857 | errno = EBADF; | |
2858 | return -1; | |
9e353e3b NIS |
2859 | } |
2860 | ||
766a733e | 2861 | char * |
14a5cf38 JH |
2862 | PerlIOStdio_mode(const char *mode, char *tmode) |
2863 | { | |
de009b76 | 2864 | char * const ret = tmode; |
a0625d38 SR |
2865 | if (mode) { |
2866 | while (*mode) { | |
2867 | *tmode++ = *mode++; | |
2868 | } | |
14a5cf38 | 2869 | } |
95005ad8 | 2870 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2871 | *tmode++ = 'b'; |
2872 | #endif | |
14a5cf38 JH |
2873 | *tmode = '\0'; |
2874 | return ret; | |
2875 | } | |
2876 | ||
4b803d04 | 2877 | IV |
2dc2558e | 2878 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2879 | { |
1fd8f4ce NIS |
2880 | PerlIO *n; |
2881 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2882 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2883 | if (toptab == tab) { |
2884 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2885 | PerlIO_pop(aTHX_ f); | |
2886 | return 0; | |
2887 | } else { | |
de009b76 | 2888 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2889 | char tmode[8]; |
2890 | FILE *stdio; | |
81428673 | 2891 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2892 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2893 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2894 | /* We never call down so do any pending stuff now */ | |
2895 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2896 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2897 | } |
1fd8f4ce NIS |
2898 | else { |
2899 | return -1; | |
2900 | } | |
2901 | } | |
14a5cf38 | 2902 | } |
2dc2558e | 2903 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2904 | } |
2905 | ||
22569500 | 2906 | |
9e353e3b | 2907 | PerlIO * |
4b069b44 | 2908 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2909 | { |
14a5cf38 JH |
2910 | dTHX; |
2911 | PerlIO *f = NULL; | |
ea5bc90f YK |
2912 | #ifdef EBCDIC |
2913 | int rc; | |
2914 | char filename[FILENAME_MAX]; | |
2915 | fldata_t fileinfo; | |
2916 | #endif | |
14a5cf38 | 2917 | if (stdio) { |
22569500 | 2918 | PerlIOStdio *s; |
375ed12a JH |
2919 | int fd0 = fileno(stdio); |
2920 | if (fd0 < 0) { | |
ea5bc90f YK |
2921 | #ifdef EBCDIC |
2922 | rc = fldata(stdio,filename,&fileinfo); | |
2923 | if(rc != 0){ | |
2924 | return NULL; | |
2925 | } | |
2926 | if(fileinfo.__dsorgHFS){ | |
2927 | return NULL; | |
2928 | } | |
2929 | /*This MVS dataset , OK!*/ | |
2930 | #else | |
375ed12a | 2931 | return NULL; |
ea5bc90f | 2932 | #endif |
375ed12a | 2933 | } |
4b069b44 NIS |
2934 | if (!mode || !*mode) { |
2935 | /* We need to probe to see how we can open the stream | |
2936 | so start with read/write and then try write and read | |
2937 | we dup() so that we can fclose without loosing the fd. | |
2938 | ||
2939 | Note that the errno value set by a failing fdopen | |
2940 | varies between stdio implementations. | |
2941 | */ | |
375ed12a JH |
2942 | const int fd = PerlLIO_dup(fd0); |
2943 | FILE *f2; | |
2944 | if (fd < 0) { | |
2945 | return f; | |
2946 | } | |
2947 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2948 | if (!f2) { |
a33cf58c | 2949 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2950 | } |
2951 | if (!f2) { | |
a33cf58c | 2952 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2953 | } |
2954 | if (!f2) { | |
2955 | /* Don't seem to be able to open */ | |
2956 | PerlLIO_close(fd); | |
2957 | return f; | |
2958 | } | |
2959 | fclose(f2); | |
22569500 | 2960 | } |
de092133 | 2961 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2962 | s = PerlIOSelf(f, PerlIOStdio); |
2963 | s->stdio = stdio; | |
ea5bc90f YK |
2964 | #ifdef EBCDIC |
2965 | fd0 = fileno(stdio); | |
2966 | if(fd0 != -1){ | |
2967 | PerlIOUnix_refcnt_inc(fd0); | |
2968 | } | |
2969 | else{ | |
2970 | rc = fldata(stdio,filename,&fileinfo); | |
2971 | if(rc != 0){ | |
2972 | PerlIOUnix_refcnt_inc(fd0); | |
2973 | } | |
2974 | if(fileinfo.__dsorgHFS){ | |
2975 | PerlIOUnix_refcnt_inc(fd0); | |
2976 | } | |
2977 | /*This MVS dataset , OK!*/ | |
2978 | } | |
2979 | #else | |
c586124f | 2980 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
ea5bc90f | 2981 | #endif |
a33cf58c | 2982 | } |
14a5cf38 JH |
2983 | } |
2984 | return f; | |
9e353e3b NIS |
2985 | } |
2986 | ||
2987 | PerlIO * | |
14a5cf38 JH |
2988 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2989 | IV n, const char *mode, int fd, int imode, | |
2990 | int perm, PerlIO *f, int narg, SV **args) | |
2991 | { | |
2992 | char tmode[8]; | |
d9dac8cd | 2993 | if (PerlIOValid(f)) { |
41188aa0 TC |
2994 | STRLEN len; |
2995 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 2996 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 2997 | FILE *stdio; |
41188aa0 | 2998 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 2999 | return NULL; |
1751d015 | 3000 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
3001 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
3002 | s->stdio); | |
14a5cf38 JH |
3003 | if (!s->stdio) |
3004 | return NULL; | |
3005 | s->stdio = stdio; | |
1751d015 | 3006 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3007 | return f; |
3008 | } | |
3009 | else { | |
3010 | if (narg > 0) { | |
41188aa0 TC |
3011 | STRLEN len; |
3012 | const char * const path = SvPV_const(*args, len); | |
3013 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 3014 | return NULL; |
3b6c1aba | 3015 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3016 | mode++; |
3017 | fd = PerlLIO_open3(path, imode, perm); | |
3018 | } | |
3019 | else { | |
95005ad8 GH |
3020 | FILE *stdio; |
3021 | bool appended = FALSE; | |
3022 | #ifdef __CYGWIN__ | |
3023 | /* Cygwin wants its 'b' early. */ | |
3024 | appended = TRUE; | |
3025 | mode = PerlIOStdio_mode(mode, tmode); | |
3026 | #endif | |
3027 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3028 | if (stdio) { |
6f0313ac JH |
3029 | if (!f) { |
3030 | f = PerlIO_allocate(aTHX); | |
3031 | } | |
95005ad8 GH |
3032 | if (!appended) |
3033 | mode = PerlIOStdio_mode(mode, tmode); | |
3034 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3035 | if (f) { | |
0f0f9e2b JH |
3036 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3037 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3038 | } else { | |
3039 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3040 | } |
3041 | return f; | |
3042 | } | |
3043 | else { | |
3044 | return NULL; | |
3045 | } | |
14a5cf38 JH |
3046 | } |
3047 | } | |
3048 | if (fd >= 0) { | |
3049 | FILE *stdio = NULL; | |
3050 | int init = 0; | |
3b6c1aba | 3051 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3052 | init = 1; |
3053 | mode++; | |
3054 | } | |
3055 | if (init) { | |
3056 | switch (fd) { | |
3057 | case 0: | |
3058 | stdio = PerlSIO_stdin; | |
3059 | break; | |
3060 | case 1: | |
3061 | stdio = PerlSIO_stdout; | |
3062 | break; | |
3063 | case 2: | |
3064 | stdio = PerlSIO_stderr; | |
3065 | break; | |
3066 | } | |
3067 | } | |
3068 | else { | |
3069 | stdio = PerlSIO_fdopen(fd, mode = | |
3070 | PerlIOStdio_mode(mode, tmode)); | |
3071 | } | |
3072 | if (stdio) { | |
d9dac8cd NIS |
3073 | if (!f) { |
3074 | f = PerlIO_allocate(aTHX); | |
3075 | } | |
a33cf58c | 3076 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3077 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3078 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3079 | } |
14a5cf38 JH |
3080 | return f; |
3081 | } | |
0a20f69b | 3082 | PerlLIO_close(fd); |
14a5cf38 JH |
3083 | } |
3084 | } | |
ee518936 | 3085 | return NULL; |
9e353e3b NIS |
3086 | } |
3087 | ||
1751d015 | 3088 | PerlIO * |
ecdeb87c | 3089 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3090 | { |
3091 | /* This assumes no layers underneath - which is what | |
3092 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3093 | */ | |
ecdeb87c | 3094 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3095 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3096 | const int fd = fileno(stdio); |
9217ff3f | 3097 | char mode[8]; |
ecdeb87c | 3098 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3099 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3100 | if (dfd >= 0) { |
3101 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3102 | goto set_this; | |
ecdeb87c NIS |
3103 | } |
3104 | else { | |
6f207bd3 | 3105 | NOOP; |
ecdeb87c NIS |
3106 | /* FIXME: To avoid messy error recovery if dup fails |
3107 | re-use the existing stdio as though flag was not set | |
3108 | */ | |
3109 | } | |
3110 | } | |
9217ff3f NIS |
3111 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3112 | set_this: | |
694c95cf | 3113 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3114 | if(stdio) { |
3115 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3116 | } | |
1751d015 NIS |
3117 | } |
3118 | return f; | |
3119 | } | |
3120 | ||
0d7a5398 NIS |
3121 | static int |
3122 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3123 | { | |
96a5add6 AL |
3124 | PERL_UNUSED_CONTEXT; |
3125 | ||
0d7a5398 | 3126 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3127 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3128 | */ |
36b1c892 AD |
3129 | # if defined(HAS_FDCLOSE) |
3130 | return fdclose(f, NULL) == 0 ? 1 : 0; | |
3131 | # elif defined(__UCLIBC__) | |
ef8eacb8 AT |
3132 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ |
3133 | f->__filedes = -1; | |
3134 | return 1; | |
3135 | # elif defined(__GLIBC__) | |
0d7a5398 | 3136 | /* There may be a better way for GLIBC: |
37725cdc | 3137 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3138 | */ |
3139 | f->_fileno = -1; | |
3140 | return 1; | |
bdea967c | 3141 | # elif defined(__sun) |
f5992bc4 | 3142 | PERL_UNUSED_ARG(f); |
cfedb851 | 3143 | return 0; |
0d7a5398 NIS |
3144 | # elif defined(__hpux) |
3145 | f->__fileH = 0xff; | |
3146 | f->__fileL = 0xff; | |
3147 | return 1; | |
9837d373 | 3148 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3149 | your platform does not have special entry try this one. |
9837d373 NIS |
3150 | [For OSF only have confirmation for Tru64 (alpha) |
3151 | but assume other OSFs will be similar.] | |
37725cdc | 3152 | */ |
9837d373 | 3153 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3154 | f->_file = -1; |
3155 | return 1; | |
3156 | # elif defined(__FreeBSD__) | |
3157 | /* There may be a better way on FreeBSD: | |
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; | |
0c49ea6a SU |
3162 | return 1; |
3163 | # elif defined(__OpenBSD__) | |
3164 | /* There may be a better way on OpenBSD: | |
3165 | - we could insert a dummy func in the _close function entry | |
3166 | f->_close = (int (*)(void *)) dummy_close; | |
3167 | */ | |
3168 | f->_file = -1; | |
0d7a5398 | 3169 | return 1; |
59ad941d IZ |
3170 | # elif defined(__EMX__) |
3171 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3172 | f->_handle = -1; | |
3173 | return 1; | |
0d7a5398 NIS |
3174 | # elif defined(__CYGWIN__) |
3175 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3176 | - we could insert a dummy func in the _close function entry |
3177 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3178 | */ |
3179 | f->_file = -1; | |
3180 | return 1; | |
3181 | # elif defined(WIN32) | |
378eeda7 | 3182 | # if defined(UNDER_CE) |
b475b3e6 JH |
3183 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3184 | structure at all | |
3185 | */ | |
0d7a5398 NIS |
3186 | # else |
3187 | f->_file = -1; | |
3188 | # endif | |
3189 | return 1; | |
3190 | # else | |
3191 | #if 0 | |
37725cdc | 3192 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3193 | (which isn't thread safe) instead |
37725cdc | 3194 | */ |
0d7a5398 NIS |
3195 | # error "Don't know how to set FILE.fileno on your platform" |
3196 | #endif | |
8772537c | 3197 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3198 | return 0; |
3199 | # endif | |
3200 | } | |
3201 | ||
1751d015 | 3202 | IV |
f62ce20a | 3203 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3204 | { |
c4420975 | 3205 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3206 | if (!stdio) { |
3207 | errno = EBADF; | |
3208 | return -1; | |
3209 | } | |
9217ff3f | 3210 | else { |
de009b76 | 3211 | const int fd = fileno(stdio); |
0d7a5398 | 3212 | int invalidate = 0; |
bbfd922f | 3213 | IV result = 0; |
1d791a44 | 3214 | int dupfd = -1; |
4ee39169 | 3215 | dSAVEDERRNO; |
a2e578da MHM |
3216 | #ifdef USE_ITHREADS |
3217 | dVAR; | |
3218 | #endif | |
0d7a5398 | 3219 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3220 | /* Socks lib overrides close() but stdio isn't linked to |
3221 | that library (though we are) - so we must call close() | |
3222 | on sockets on stdio's behalf. | |
3223 | */ | |
0d7a5398 NIS |
3224 | int optval; |
3225 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3226 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3227 | invalidate = 1; |
0d7a5398 | 3228 | #endif |
d8723f43 NC |
3229 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3230 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3231 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3232 | trying to close an already closed handle which somehow it still has | |
3233 | a reference to. (via.xs, I'm looking at you). */ | |
3234 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3235 | /* File descriptor still in use */ | |
0d7a5398 | 3236 | invalidate = 1; |
d8723f43 | 3237 | } |
0d7a5398 | 3238 | if (invalidate) { |
6b4ce6c8 AL |
3239 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3240 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3241 | return 0; | |
3242 | if (stdio == stdout || stdio == stderr) | |
3243 | return PerlIO_flush(f); | |
d88f7f65 JH |
3244 | } |
3245 | #ifdef USE_ITHREADS | |
3246 | MUTEX_LOCK(&PL_perlio_mutex); | |
3247 | /* Right. We need a mutex here because for a brief while we | |
3248 | will have the situation that fd is actually closed. Hence if | |
3249 | a second thread were to get into this block, its dup() would | |
3250 | likely return our fd as its dupfd. (after all, it is closed) | |
3251 | Then if we get to the dup2() first, we blat the fd back | |
3252 | (messing up its temporary as a side effect) only for it to | |
3253 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3254 | ||
3255 | /* There is, of course, a race condition, that any other thread | |
3256 | trying to input/output/whatever on this fd will be stuffed | |
3257 | for the duration of this little manoeuvrer. Perhaps we | |
3258 | should hold an IO mutex for the duration of every IO | |
3259 | operation if we know that invalidate doesn't work on this | |
3260 | platform, but that would suck, and could kill performance. | |
3261 | ||
3262 | Except that correctness trumps speed. | |
3263 | Advice from klortho #11912. */ | |
3264 | #endif | |
3265 | if (invalidate) { | |
37725cdc NIS |
3266 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3267 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3268 | fileno slot of the FILE * | |
3269 | */ | |
bbfd922f | 3270 | result = PerlIO_flush(f); |
4ee39169 | 3271 | SAVE_ERRNO; |
6b4ce6c8 | 3272 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3273 | if (!invalidate) { |
6b4ce6c8 | 3274 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3275 | #ifdef USE_ITHREADS |
9bab90c0 | 3276 | if (dupfd < 0) { |
711e8db2 NC |
3277 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3278 | recover from here, or if closing this particular FILE * | |
3279 | is a good idea now. */ | |
3280 | } | |
3281 | #endif | |
3282 | } | |
94ccb807 JH |
3283 | } else { |
3284 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3285 | } |
0d7a5398 | 3286 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3287 | /* We treat error from stdio as success if we invalidated |
3288 | errno may NOT be expected EBADF | |
e8529473 NIS |
3289 | */ |
3290 | if (invalidate && result != 0) { | |
4ee39169 | 3291 | RESTORE_ERRNO; |
0d7a5398 | 3292 | result = 0; |
37725cdc | 3293 | } |
6b4ce6c8 AL |
3294 | #ifdef SOCKS5_VERSION_NAME |
3295 | /* in SOCKS' case, let close() determine return value */ | |
3296 | result = close(fd); | |
3297 | #endif | |
1d791a44 | 3298 | if (dupfd >= 0) { |
0d7a5398 | 3299 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3300 | PerlLIO_close(dupfd); |
d88f7f65 | 3301 | } |
711e8db2 | 3302 | #ifdef USE_ITHREADS |
d88f7f65 | 3303 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3304 | #endif |
9217ff3f | 3305 | return result; |
37725cdc | 3306 | } |
1751d015 NIS |
3307 | } |
3308 | ||
9e353e3b | 3309 | SSize_t |
f62ce20a | 3310 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3311 | { |
abf9167d | 3312 | FILE * s; |
14a5cf38 | 3313 | SSize_t got = 0; |
abf9167d DM |
3314 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3315 | return -1; | |
3316 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3317 | for (;;) { |
3318 | if (count == 1) { | |
3319 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3320 | /* | |
3321 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3322 | * stdio does not do that for fread() | |
3323 | */ | |
de009b76 | 3324 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3325 | if (ch != EOF) { |
3326 | *buf = ch; | |
3327 | got = 1; | |
3328 | } | |
14a5cf38 | 3329 | } |
4d948241 NIS |
3330 | else |
3331 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3332 | if (got == 0 && PerlSIO_ferror(s)) |
3333 | got = -1; | |
42a7a32f | 3334 | if (got >= 0 || errno != EINTR) |
4d948241 | 3335 | break; |
abf9167d DM |
3336 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3337 | return -1; | |
42a7a32f | 3338 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3339 | } |
bdae4172 JH |
3340 | #ifdef __sgi |
3341 | /* Under some circumstances IRIX stdio fgetc() and fread() | |
3342 | * set the errno to ENOENT, which makes no sense according | |
3343 | * to either IRIX or POSIX. [rt.perl.org #123977] */ | |
3344 | if (errno == ENOENT) SETERRNO(0,0); | |
3345 | #endif | |
14a5cf38 | 3346 | return got; |
9e353e3b NIS |
3347 | } |
3348 | ||
3349 | SSize_t | |
f62ce20a | 3350 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3351 | { |
14a5cf38 | 3352 | SSize_t unread = 0; |
c4420975 | 3353 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3354 | |
313e59c8 | 3355 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3356 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3357 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3358 | STDCHAR *base = PerlIO_get_base(f); | |
3359 | SSize_t cnt = PerlIO_get_cnt(f); | |
3360 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3361 | SSize_t avail = ptr - base; | |
3362 | if (avail > 0) { | |
3363 | if (avail > count) { | |
3364 | avail = count; | |
3365 | } | |
3366 | ptr -= avail; | |
3367 | Move(buf-avail,ptr,avail,STDCHAR); | |
3368 | count -= avail; | |
3369 | unread += avail; | |
3370 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3371 | if (PerlSIO_feof(s) && unread >= 0) |
3372 | PerlSIO_clearerr(s); | |
3373 | } | |
3374 | } | |
313e59c8 NIS |
3375 | else |
3376 | #endif | |
3377 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3378 | /* We can get pointer to buffer but not its base |
3379 | Do ungetc() but check chars are ending up in the | |
3380 | buffer | |
3381 | */ | |
3382 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3383 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3384 | while (count > 0) { | |
de009b76 | 3385 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3386 | if (ungetc(ch,s) != ch) { |
3387 | /* ungetc did not work */ | |
3388 | break; | |
3389 | } | |
3390 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3391 | /* Did not change pointer as expected */ | |
375ed12a JH |
3392 | if (fgetc(s) != EOF) /* get char back again */ |
3393 | break; | |
9f7cd136 NIS |
3394 | } |
3395 | /* It worked ! */ | |
3396 | count--; | |
3397 | unread++; | |
93679785 NIS |
3398 | } |
3399 | } | |
3400 | ||
3401 | if (count > 0) { | |
3402 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3403 | } |
3404 | return unread; | |
9e353e3b NIS |
3405 | } |
3406 | ||
3407 | SSize_t | |
f62ce20a | 3408 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3409 | { |
4d948241 | 3410 | SSize_t got; |
abf9167d DM |
3411 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3412 | return -1; | |
4d948241 NIS |
3413 | for (;;) { |
3414 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3415 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3416 | if (got >= 0 || errno != EINTR) |
4d948241 | 3417 | break; |
abf9167d DM |
3418 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3419 | return -1; | |
42a7a32f | 3420 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3421 | } |
3422 | return got; | |
9e353e3b NIS |
3423 | } |
3424 | ||
94a175e1 | 3425 | IV |
f62ce20a | 3426 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3427 | { |
c4420975 | 3428 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3429 | PERL_UNUSED_CONTEXT; |
3430 | ||
94a175e1 | 3431 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3432 | } |
3433 | ||
3434 | Off_t | |
f62ce20a | 3435 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3436 | { |
c4420975 | 3437 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3438 | PERL_UNUSED_CONTEXT; |
3439 | ||
94a175e1 | 3440 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3441 | } |
3442 | ||
3443 | IV | |
f62ce20a | 3444 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3445 | { |
c4420975 | 3446 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3447 | PERL_UNUSED_CONTEXT; |
3448 | ||
14a5cf38 JH |
3449 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3450 | return PerlSIO_fflush(stdio); | |
3451 | } | |
3452 | else { | |
6f207bd3 | 3453 | NOOP; |
88b61e10 | 3454 | #if 0 |
14a5cf38 JH |
3455 | /* |
3456 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3457 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3458 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3459 | * layer read-to-read |
14a5cf38 JH |
3460 | */ |
3461 | /* | |
71200d45 | 3462 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3463 | */ |
4ee39169 | 3464 | dSAVE_ERRNO; |
14a5cf38 | 3465 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3466 | RESTORE_ERRNO; |
88b61e10 | 3467 | #endif |
14a5cf38 JH |
3468 | } |
3469 | return 0; | |
9e353e3b NIS |
3470 | } |
3471 | ||
3472 | IV | |
f62ce20a | 3473 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3474 | { |
96a5add6 AL |
3475 | PERL_UNUSED_CONTEXT; |
3476 | ||
14a5cf38 | 3477 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3478 | } |
3479 | ||
3480 | IV | |
f62ce20a | 3481 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3482 | { |
96a5add6 AL |
3483 | PERL_UNUSED_CONTEXT; |
3484 | ||
263df5f1 | 3485 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3486 | } |
3487 | ||
3488 | void | |
f62ce20a | 3489 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3490 | { |
96a5add6 AL |
3491 | PERL_UNUSED_CONTEXT; |
3492 | ||
14a5cf38 | 3493 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3494 | } |
3495 | ||
3496 | void | |
f62ce20a | 3497 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3498 | { |
96a5add6 AL |
3499 | PERL_UNUSED_CONTEXT; |
3500 | ||
9e353e3b | 3501 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3502 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3503 | #else |
bd61b366 | 3504 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3505 | #endif |
3506 | } | |
3507 | ||
3508 | #ifdef FILE_base | |
3509 | STDCHAR * | |
f62ce20a | 3510 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3511 | { |
c4420975 | 3512 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3513 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3514 | } |
3515 | ||
3516 | Size_t | |
f62ce20a | 3517 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3518 | { |
c4420975 | 3519 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3520 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3521 | } |
3522 | #endif | |
3523 | ||
3524 | #ifdef USE_STDIO_PTR | |
3525 | STDCHAR * | |
f62ce20a | 3526 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3527 | { |
c4420975 | 3528 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3529 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3530 | } |
3531 | ||
3532 | SSize_t | |
f62ce20a | 3533 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3534 | { |
c4420975 | 3535 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3536 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3537 | } |
3538 | ||
3539 | void | |
f62ce20a | 3540 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3541 | { |
c4420975 | 3542 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3543 | if (ptr != NULL) { |
9e353e3b | 3544 | #ifdef STDIO_PTR_LVALUE |
46f05249 JH |
3545 | /* This is a long-standing infamous mess. The root of the |
3546 | * problem is that one cannot know the signedness of char, and | |
3547 | * more precisely the signedness of FILE._ptr. The following | |
3548 | * things have been tried, and they have all failed (across | |
3549 | * different compilers (remember that core needs to to build | |
3550 | * also with c++) and compiler options: | |
3551 | * | |
3552 | * - casting the RHS to (void*) -- works in *some* places | |
3553 | * - casting the LHS to (void*) -- totally unportable | |
3554 | * | |
3555 | * So let's try silencing the warning at least for gcc. */ | |
3556 | GCC_DIAG_IGNORE(-Wpointer-sign); | |
d06fc7d4 | 3557 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
46f05249 | 3558 | GCC_DIAG_RESTORE; |
9e353e3b | 3559 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3560 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3561 | #endif |
3562 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3563 | /* |
71200d45 | 3564 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3565 | */ |
3566 | return; | |
9e353e3b | 3567 | #endif |
22569500 | 3568 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3569 | PerlProc_abort(); |
22569500 | 3570 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3571 | } |
3572 | /* | |
71200d45 | 3573 | * Now (or only) set cnt |
14a5cf38 | 3574 | */ |
9e353e3b | 3575 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3576 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3577 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3578 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3579 | PerlSIO_set_ptr(stdio, |
3580 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3581 | cnt)); | |
22569500 | 3582 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3583 | PerlProc_abort(); |
22569500 NIS |
3584 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3585 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3586 | } |
3587 | ||
93679785 | 3588 | |
9e353e3b NIS |
3589 | #endif |
3590 | ||
93679785 NIS |
3591 | IV |
3592 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3593 | { | |
abf9167d | 3594 | FILE * stdio; |
93679785 | 3595 | int c; |
96a5add6 | 3596 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3597 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3598 | return -1; | |
3599 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3600 | |
93679785 NIS |
3601 | /* |
3602 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3603 | */ | |
3604 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3605 | if (PerlSIO_fflush(stdio) != 0) | |
3606 | return EOF; | |
3607 | } | |
f3be3723 BL |
3608 | for (;;) { |
3609 | c = PerlSIO_fgetc(stdio); | |
3610 | if (c != EOF) | |
3611 | break; | |
3612 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3613 | return EOF; | |
abf9167d DM |
3614 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3615 | return -1; | |
f3be3723 BL |
3616 | SETERRNO(0,0); |
3617 | } | |
93679785 NIS |
3618 | |
3619 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3620 | |
3621 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3622 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3623 | /* Fake ungetc() to the real buffer in case system's ungetc |
3624 | goes elsewhere | |
3625 | */ | |
3626 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3627 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3628 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3629 | if (ptr == base+1) { | |
3630 | *--ptr = (STDCHAR) c; | |
3631 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3632 | if (PerlSIO_feof(stdio)) | |
3633 | PerlSIO_clearerr(stdio); | |
3634 | return 0; | |
3635 | } | |
3636 | } | |
313e59c8 NIS |
3637 | else |
3638 | #endif | |
3639 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3640 | STDCHAR ch = c; |
3641 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3642 | return 0; | |
3643 | } | |
3644 | } | |
93679785 NIS |
3645 | #endif |
3646 | ||
93679785 | 3647 | /* If buffer snoop scheme above fails fall back to |
9f7cd136 | 3648 | using ungetc(). |
93679785 NIS |
3649 | */ |
3650 | if (PerlSIO_ungetc(c, stdio) != c) | |
3651 | return EOF; | |
5876737a | 3652 | |
93679785 NIS |
3653 | return 0; |
3654 | } | |
3655 | ||
3656 | ||
3657 | ||
27da23d5 | 3658 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3659 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3660 | "stdio", |
3661 | sizeof(PerlIOStdio), | |
86e05cf2 | 3662 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3663 | PerlIOStdio_pushed, |
2376d97d | 3664 | PerlIOBase_popped, |
14a5cf38 | 3665 | PerlIOStdio_open, |
86e05cf2 | 3666 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3667 | NULL, |
3668 | PerlIOStdio_fileno, | |
71200d45 | 3669 | PerlIOStdio_dup, |
14a5cf38 JH |
3670 | PerlIOStdio_read, |
3671 | PerlIOStdio_unread, | |
3672 | PerlIOStdio_write, | |
3673 | PerlIOStdio_seek, | |
3674 | PerlIOStdio_tell, | |
3675 | PerlIOStdio_close, | |
3676 | PerlIOStdio_flush, | |
3677 | PerlIOStdio_fill, | |
3678 | PerlIOStdio_eof, | |
3679 | PerlIOStdio_error, | |
3680 | PerlIOStdio_clearerr, | |
3681 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3682 | #ifdef FILE_base |
14a5cf38 JH |
3683 | PerlIOStdio_get_base, |
3684 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3685 | #else |
14a5cf38 JH |
3686 | NULL, |
3687 | NULL, | |
9e353e3b NIS |
3688 | #endif |
3689 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3690 | PerlIOStdio_get_ptr, |
3691 | PerlIOStdio_get_cnt, | |
15b61c98 | 3692 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3693 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3694 | # else |
3695 | NULL, | |
3696 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3697 | #else | |
3698 | NULL, | |
14a5cf38 JH |
3699 | NULL, |
3700 | NULL, | |
15b61c98 | 3701 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3702 | }; |
3703 | ||
b9d6bf13 JH |
3704 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3705 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3706 | FILE * |
81428673 | 3707 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3708 | { |
e87a358a | 3709 | dTHX; |
81428673 NIS |
3710 | FILE *stdio = NULL; |
3711 | if (PerlIOValid(f)) { | |
3712 | char buf[8]; | |
375ed12a JH |
3713 | int fd = PerlIO_fileno(f); |
3714 | if (fd < 0) { | |
3715 | return NULL; | |
3716 | } | |
81428673 NIS |
3717 | PerlIO_flush(f); |
3718 | if (!mode || !*mode) { | |
3719 | mode = PerlIO_modestr(f, buf); | |
3720 | } | |
3721 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3722 | if (stdio) { | |
3723 | PerlIOl *l = *f; | |
9f75cc58 | 3724 | PerlIO *f2; |
81428673 NIS |
3725 | /* De-link any lower layers so new :stdio sticks */ |
3726 | *f = NULL; | |
a0714e2c | 3727 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3728 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3729 | s->stdio = stdio; |
6b54a403 | 3730 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3731 | /* Link previous lower layers under new one */ |
3732 | *PerlIONext(f) = l; | |
3733 | } | |
3734 | else { | |
3735 | /* restore layers list */ | |
3736 | *f = l; | |
3737 | } | |
a33cf58c | 3738 | } |
14a5cf38 JH |
3739 | } |
3740 | return stdio; | |
9e353e3b NIS |
3741 | } |
3742 | ||
81428673 | 3743 | |
9e353e3b NIS |
3744 | FILE * |
3745 | PerlIO_findFILE(PerlIO *f) | |
3746 | { | |
14a5cf38 | 3747 | PerlIOl *l = *f; |
bbbc33d0 | 3748 | FILE *stdio; |
14a5cf38 JH |
3749 | while (l) { |
3750 | if (l->tab == &PerlIO_stdio) { | |
3751 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3752 | return s->stdio; | |
3753 | } | |
3754 | l = *PerlIONext(&l); | |
f7e7eb72 | 3755 | } |
4b069b44 | 3756 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3757 | /* However, we're not really exporting a FILE * to someone else (who |
3758 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3759 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3760 | descriptor. We have to do this, because if the loop above returns you |
3761 | the FILE *, then *it* didn't increase any reference count. So there's | |
3762 | only one way to be consistent. */ | |
3763 | stdio = PerlIO_exportFILE(f, NULL); | |
3764 | if (stdio) { | |
3765 | const int fd = fileno(stdio); | |
3766 | if (fd >= 0) | |
3767 | PerlIOUnix_refcnt_dec(fd); | |
3768 | } | |
3769 | return stdio; | |
9e353e3b NIS |
3770 | } |
3771 | ||
b9d6bf13 | 3772 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3773 | void |
3774 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3775 | { | |
22569500 NIS |
3776 | PerlIOl *l; |
3777 | while ((l = *p)) { | |
3778 | if (l->tab == &PerlIO_stdio) { | |
3779 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3780 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3781 | const int fd = fileno(f); |
3782 | if (fd >= 0) | |
3783 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3784 | { |
3785 | dTHX; | |
3786 | PerlIO_pop(aTHX_ p); | |
3787 | } | |
22569500 NIS |
3788 | return; |
3789 | } | |
3790 | } | |
3791 | p = PerlIONext(p); | |
3792 | } | |
3793 | return; | |
9e353e3b NIS |
3794 | } |
3795 | ||
3796 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3797 | /* |
71200d45 | 3798 | * perlio buffer layer |
14a5cf38 | 3799 | */ |
9e353e3b | 3800 | |
5e2ab84b | 3801 | IV |
2dc2558e | 3802 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3803 | { |
14a5cf38 | 3804 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3805 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3806 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3807 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3808 | } | |
4b069b44 | 3809 | if (*PerlIONext(f)) { |
de009b76 | 3810 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3811 | if (posn != (Off_t) - 1) { |
3812 | b->posn = posn; | |
3813 | } | |
14a5cf38 | 3814 | } |
2dc2558e | 3815 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3816 | } |
3817 | ||
9e353e3b | 3818 | PerlIO * |
14a5cf38 JH |
3819 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3820 | IV n, const char *mode, int fd, int imode, int perm, | |
3821 | PerlIO *f, int narg, SV **args) | |
3822 | { | |
04892f78 | 3823 | if (PerlIOValid(f)) { |
14a5cf38 | 3824 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3825 | PerlIO_funcs *tab = |
3826 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3827 | if (tab && tab->Open) | |
3828 | next = | |
3829 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3830 | next, narg, args); | |
2dc2558e | 3831 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3832 | return NULL; |
3833 | } | |
3834 | } | |
3835 | else { | |
04892f78 | 3836 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3837 | int init = 0; |
3b6c1aba | 3838 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3839 | init = 1; |
3840 | /* | |
71200d45 | 3841 | * mode++; |
14a5cf38 JH |
3842 | */ |
3843 | } | |
67363c0d JH |
3844 | if (tab && tab->Open) |
3845 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3846 | f, narg, args); | |
3847 | else | |
3848 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3849 | if (f) { |
22569500 | 3850 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3851 | /* |
3852 | * if push fails during open, open fails. close will pop us. | |
3853 | */ | |
3854 | PerlIO_close (f); | |
3855 | return NULL; | |
3856 | } else { | |
3857 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3858 | if (init && fd == 2) { |
3859 | /* | |
3860 | * Initial stderr is unbuffered | |
3861 | */ | |
3862 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3863 | } | |
23b84778 IZ |
3864 | #ifdef PERLIO_USING_CRLF |
3865 | # ifdef PERLIO_IS_BINMODE_FD | |
3866 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3867 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3868 | else |
3869 | # endif | |
3870 | /* | |
3871 | * do something about failing setmode()? --jhi | |
3872 | */ | |
3873 | PerlLIO_setmode(fd, O_BINARY); | |
3874 | #endif | |
8c8488cd | 3875 | #ifdef VMS |
8c8488cd CB |
3876 | /* Enable line buffering with record-oriented regular files |
3877 | * so we don't introduce an extraneous record boundary when | |
3878 | * the buffer fills up. | |
3879 | */ | |
3880 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3881 | Stat_t st; | |
3882 | if (PerlLIO_fstat(fd, &st) == 0 | |
3883 | && S_ISREG(st.st_mode) | |
3884 | && (st.st_fab_rfm == FAB$C_VAR | |
3885 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3886 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3887 | } | |
3888 | } | |
3889 | #endif | |
14a5cf38 JH |
3890 | } |
3891 | } | |
ee518936 | 3892 | } |
14a5cf38 | 3893 | return f; |
9e353e3b NIS |
3894 | } |
3895 | ||
14a5cf38 JH |
3896 | /* |
3897 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3898 | * read or write state. For write state, we put the postponed data through |
3899 | * the next layers. For read state, we seek() the next layers to the | |
3900 | * offset given by current position in the buffer, and discard the buffer | |
3901 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3902 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3903 | */ |
9e353e3b | 3904 | IV |
f62ce20a | 3905 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3906 | { |
dcda55fc | 3907 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3908 | int code = 0; |
04892f78 | 3909 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3910 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3911 | /* | |
71200d45 | 3912 | * write() the buffer |
14a5cf38 | 3913 | */ |
de009b76 AL |
3914 | const STDCHAR *buf = b->buf; |
3915 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3916 | while (p < b->ptr) { |
3917 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3918 | if (count > 0) { | |
3919 | p += count; | |
3920 | } | |
3921 | else if (count < 0 || PerlIO_error(n)) { | |
3922 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 3923 | PerlIO_save_errno(f); |
14a5cf38 JH |
3924 | code = -1; |
3925 | break; | |
3926 | } | |
3927 | } | |
3928 | b->posn += (p - buf); | |
3929 | } | |
3930 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3931 | STDCHAR *buf = PerlIO_get_base(f); | |
3932 | /* | |
71200d45 | 3933 | * Note position change |
14a5cf38 JH |
3934 | */ |
3935 | b->posn += (b->ptr - buf); | |
3936 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3937 | /* We did not consume all of it - try and seek downstream to |
3938 | our logical position | |
14a5cf38 | 3939 | */ |
4b069b44 | 3940 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3941 | /* Reload n as some layers may pop themselves on seek */ |
3942 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3943 | } |
ba5c3fe9 | 3944 | else { |
4b069b44 NIS |
3945 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3946 | data is lost for good - so return saying "ok" having undone | |
3947 | the position adjust | |
3948 | */ | |
3949 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3950 | return code; |
3951 | } | |
14a5cf38 JH |
3952 | } |
3953 | } | |
3954 | b->ptr = b->end = b->buf; | |
3955 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3956 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3957 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3958 | code = -1; |
3959 | return code; | |
6f9d8c32 NIS |
3960 | } |
3961 | ||
93c2c2ec IZ |
3962 | /* This discards the content of the buffer after b->ptr, and rereads |
3963 | * the buffer from the position off in the layer downstream; here off | |
3964 | * is at offset corresponding to b->ptr - b->buf. | |
3965 | */ | |
06da4f11 | 3966 | IV |
f62ce20a | 3967 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3968 | { |
dcda55fc | 3969 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3970 | PerlIO *n = PerlIONext(f); |
3971 | SSize_t avail; | |
3972 | /* | |
4b069b44 NIS |
3973 | * Down-stream flush is defined not to loose read data so is harmless. |
3974 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3975 | */ |
93c2c2ec | 3976 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3977 | return -1; |
3978 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3979 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3980 | |
3981 | if (!b->buf) | |
22569500 | 3982 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3983 | |
0f0eef27 | 3984 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3985 | |
14a5cf38 | 3986 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3987 | |
3988 | if (!PerlIOValid(n)) { | |
3989 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3990 | return -1; | |
3991 | } | |
3992 | ||
14a5cf38 JH |
3993 | if (PerlIO_fast_gets(n)) { |
3994 | /* | |
04892f78 | 3995 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3996 | * ->Read() because that will loop till it gets what we asked for |
3997 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3998 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3999 | */ |
4000 | avail = PerlIO_get_cnt(n); | |
4001 | if (avail <= 0) { | |
4002 | avail = PerlIO_fill(n); | |
4003 | if (avail == 0) | |
4004 | avail = PerlIO_get_cnt(n); | |
4005 | else { | |
4006 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4007 | avail = 0; | |
4008 | } | |
4009 | } | |
4010 | if (avail > 0) { | |
4011 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4012 | const SSize_t cnt = avail; |
eb160463 | 4013 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4014 | avail = b->bufsiz; |
4015 | Copy(ptr, b->buf, avail, STDCHAR); | |
4016 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4017 | } | |
4018 | } | |
4019 | else { | |
4020 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4021 | } | |
4022 | if (avail <= 0) { | |
4023 | if (avail == 0) | |
4024 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4025 | else | |
0ea86a10 | 4026 | { |
14a5cf38 | 4027 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
0ea86a10 FC |
4028 | PerlIO_save_errno(f); |
4029 | } | |
14a5cf38 JH |
4030 | return -1; |
4031 | } | |
4032 | b->end = b->buf + avail; | |
4033 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4034 | return 0; | |
06da4f11 NIS |
4035 | } |
4036 | ||
6f9d8c32 | 4037 | SSize_t |
f62ce20a | 4038 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4039 | { |
04892f78 | 4040 | if (PerlIOValid(f)) { |
dcda55fc | 4041 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4042 | if (!b->ptr) |
4043 | PerlIO_get_base(f); | |
f62ce20a | 4044 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4045 | } |
4046 | return 0; | |
6f9d8c32 NIS |
4047 | } |
4048 | ||
9e353e3b | 4049 | SSize_t |
f62ce20a | 4050 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4051 | { |
14a5cf38 | 4052 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4053 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4054 | SSize_t unread = 0; |
4055 | SSize_t avail; | |
4056 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4057 | PerlIO_flush(f); | |
4058 | if (!b->buf) | |
4059 | PerlIO_get_base(f); | |
4060 | if (b->buf) { | |
4061 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4062 | /* | |
4063 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4064 | * which have been read back to buffer start |
14a5cf38 JH |
4065 | */ |
4066 | avail = (b->ptr - b->buf); | |
4067 | } | |
4068 | else { | |
4069 | /* | |
4070 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4071 | * unread |
14a5cf38 JH |
4072 | */ |
4073 | avail = b->bufsiz; | |
4074 | b->end = b->buf + avail; | |
4075 | b->ptr = b->end; | |
4076 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4077 | /* | |
71200d45 | 4078 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4079 | */ |
4080 | b->posn -= b->bufsiz; | |
4081 | } | |
94e529cc | 4082 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4083 | /* |
71200d45 | 4084 | * If we have space for more than count, just move count |
14a5cf38 JH |
4085 | */ |
4086 | avail = count; | |
4087 | } | |
4088 | if (avail > 0) { | |
4089 | b->ptr -= avail; | |
4090 | buf -= avail; | |
4091 | /* | |
4092 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4093 | * there |
14a5cf38 JH |
4094 | */ |
4095 | if (buf != b->ptr) { | |
4096 | Copy(buf, b->ptr, avail, STDCHAR); | |
4097 | } | |
4098 | count -= avail; | |
4099 | unread += avail; | |
4100 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4101 | } | |
4102 | } | |
93679785 NIS |
4103 | if (count > 0) { |
4104 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4105 | } | |
14a5cf38 | 4106 | return unread; |
760ac839 LW |
4107 | } |
4108 | ||
9e353e3b | 4109 | SSize_t |
f62ce20a | 4110 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4111 | { |
de009b76 | 4112 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4113 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4114 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4115 | Size_t written = 0; |
4116 | if (!b->buf) | |
4117 | PerlIO_get_base(f); | |
4118 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4119 | return 0; | |
0678cb22 NIS |
4120 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4121 | if (PerlIO_flush(f) != 0) { | |
4122 | return 0; | |
4123 | } | |
4124 | } | |
ee56a6b9 CS |
4125 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4126 | flushptr = buf + count; | |
4127 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4128 | --flushptr; | |
4129 | } | |
14a5cf38 JH |
4130 | while (count > 0) { |
4131 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4132 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4133 | avail = count; |
ee56a6b9 CS |
4134 | if (flushptr > buf && flushptr <= buf + avail) |
4135 | avail = flushptr - buf; | |
14a5cf38 | 4136 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4137 | if (avail) { |
4138 | Copy(buf, b->ptr, avail, STDCHAR); | |
4139 | count -= avail; | |
4140 | buf += avail; | |
4141 | written += avail; | |
4142 | b->ptr += avail; | |
4143 | if (buf == flushptr) | |
4144 | PerlIO_flush(f); | |
14a5cf38 JH |
4145 | } |
4146 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4147 | if (PerlIO_flush(f) == -1) |
4148 | return -1; | |
14a5cf38 JH |
4149 | } |
4150 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4151 | PerlIO_flush(f); | |
4152 | return written; | |
9e353e3b NIS |
4153 | } |
4154 | ||
94a175e1 | 4155 | IV |
f62ce20a | 4156 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4157 | { |
14a5cf38 JH |
4158 | IV code; |
4159 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4160 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4161 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4162 | if (code == 0) { | |
de009b76 | 4163 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4164 | b->posn = PerlIO_tell(PerlIONext(f)); |
4165 | } | |
9e353e3b | 4166 | } |
14a5cf38 | 4167 | return code; |
9e353e3b NIS |
4168 | } |
4169 | ||
4170 | Off_t | |
f62ce20a | 4171 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4172 | { |
dcda55fc | 4173 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4174 | /* |
71200d45 | 4175 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4176 | */ |
4177 | Off_t posn = b->posn; | |
37725cdc | 4178 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4179 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4180 | #if 1 | |
4181 | /* As O_APPEND files are normally shared in some sense it is better | |
4182 | to flush : | |
4183 | */ | |
4184 | PerlIO_flush(f); | |
4185 | #else | |
37725cdc | 4186 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4187 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4188 | #endif | |
4189 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4190 | } | |
14a5cf38 JH |
4191 | if (b->buf) { |
4192 | /* | |
71200d45 | 4193 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4194 | */ |
4195 | posn += (b->ptr - b->buf); | |
4196 | } | |
4197 | return posn; | |
9e353e3b NIS |
4198 | } |
4199 | ||
4200 | IV | |
44798d05 NIS |
4201 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4202 | { | |
de009b76 AL |
4203 | const IV code = PerlIOBase_popped(aTHX_ f); |
4204 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4205 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4206 | Safefree(b->buf); | |
4207 | } | |
dcda55fc | 4208 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4209 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4210 | return code; | |
4211 | } | |
4212 | ||
4213 | IV | |
f62ce20a | 4214 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4215 | { |
de009b76 AL |
4216 | const IV code = PerlIOBase_close(aTHX_ f); |
4217 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4218 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4219 | Safefree(b->buf); |
14a5cf38 | 4220 | } |
dcda55fc | 4221 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4222 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4223 | return code; | |
760ac839 LW |
4224 | } |
4225 | ||
9e353e3b | 4226 | STDCHAR * |
f62ce20a | 4227 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4228 | { |
dcda55fc | 4229 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4230 | if (!b->buf) |
4231 | PerlIO_get_base(f); | |
4232 | return b->ptr; | |
9e353e3b NIS |
4233 | } |
4234 | ||
05d1247b | 4235 | SSize_t |
f62ce20a | 4236 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4237 | { |
dcda55fc | 4238 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4239 | if (!b->buf) |
4240 | PerlIO_get_base(f); | |
4241 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4242 | return (b->end - b->ptr); | |
4243 | return 0; | |
9e353e3b NIS |
4244 | } |
4245 | ||
4246 | STDCHAR * | |
f62ce20a | 4247 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4248 | { |
dcda55fc | 4249 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4250 | PERL_UNUSED_CONTEXT; |
4251 | ||
14a5cf38 JH |
4252 | if (!b->buf) { |
4253 | if (!b->bufsiz) | |
1810cd7c | 4254 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4255 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4256 | if (!b->buf) { |
4257 | b->buf = (STDCHAR *) & b->oneword; | |
4258 | b->bufsiz = sizeof(b->oneword); | |
4259 | } | |
dcda55fc | 4260 | b->end = b->ptr = b->buf; |
06da4f11 | 4261 | } |
14a5cf38 | 4262 | return b->buf; |
9e353e3b NIS |
4263 | } |
4264 | ||
4265 | Size_t | |
f62ce20a | 4266 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4267 | { |
dcda55fc | 4268 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4269 | if (!b->buf) |
4270 | PerlIO_get_base(f); | |
4271 | return (b->end - b->buf); | |
9e353e3b NIS |
4272 | } |
4273 | ||
4274 | void | |
f62ce20a | 4275 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4276 | { |
dcda55fc | 4277 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4278 | #ifndef DEBUGGING |
4279 | PERL_UNUSED_ARG(cnt); | |
4280 | #endif | |
14a5cf38 JH |
4281 | if (!b->buf) |
4282 | PerlIO_get_base(f); | |
4283 | b->ptr = ptr; | |
b727803b RGS |
4284 | assert(PerlIO_get_cnt(f) == cnt); |
4285 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4286 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4287 | } |
4288 | ||
71200d45 | 4289 | PerlIO * |
ecdeb87c | 4290 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4291 | { |
ecdeb87c | 4292 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4293 | } |
4294 | ||
4295 | ||
4296 | ||
27da23d5 | 4297 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4298 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4299 | "perlio", |
4300 | sizeof(PerlIOBuf), | |
86e05cf2 | 4301 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4302 | PerlIOBuf_pushed, |
44798d05 | 4303 | PerlIOBuf_popped, |
14a5cf38 | 4304 | PerlIOBuf_open, |
86e05cf2 | 4305 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4306 | NULL, |
4307 | PerlIOBase_fileno, | |
71200d45 | 4308 | PerlIOBuf_dup, |
14a5cf38 JH |
4309 | PerlIOBuf_read, |
4310 | PerlIOBuf_unread, | |
4311 | PerlIOBuf_write, | |
4312 | PerlIOBuf_seek, | |
4313 | PerlIOBuf_tell, | |
4314 | PerlIOBuf_close, | |
4315 | PerlIOBuf_flush, | |
4316 | PerlIOBuf_fill, | |
4317 | PerlIOBase_eof, | |
4318 | PerlIOBase_error, | |
4319 | PerlIOBase_clearerr, | |
4320 | PerlIOBase_setlinebuf, | |
4321 | PerlIOBuf_get_base, | |
4322 | PerlIOBuf_bufsiz, | |
4323 | PerlIOBuf_get_ptr, | |
4324 | PerlIOBuf_get_cnt, | |
4325 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4326 | }; |
4327 | ||
66ecd56b | 4328 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4329 | /* |
71200d45 | 4330 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4331 | */ |
5e2ab84b NIS |
4332 | |
4333 | IV | |
f62ce20a | 4334 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4335 | { |
14a5cf38 | 4336 | /* |
71200d45 | 4337 | * Should never happen |
14a5cf38 JH |
4338 | */ |
4339 | PerlIO_flush(f); | |
4340 | return 0; | |
5e2ab84b NIS |
4341 | } |
4342 | ||
4343 | IV | |
f62ce20a | 4344 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4345 | { |
14a5cf38 | 4346 | /* |
71200d45 | 4347 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4348 | */ |
4349 | PerlIO_flush(f); | |
4350 | return PerlIO_close(f); | |
5e2ab84b NIS |
4351 | } |
4352 | ||
94a175e1 | 4353 | IV |
f62ce20a | 4354 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4355 | { |
14a5cf38 | 4356 | /* |
71200d45 | 4357 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4358 | */ |
4359 | PerlIO_flush(f); | |
4360 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4361 | } |
4362 | ||
4363 | ||
4364 | IV | |
f62ce20a | 4365 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4366 | { |
dcda55fc | 4367 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4368 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4369 | Safefree(b->buf); |
14a5cf38 JH |
4370 | b->buf = NULL; |
4371 | } | |
4372 | PerlIO_pop(aTHX_ f); | |
4373 | return 0; | |
5e2ab84b NIS |
4374 | } |
4375 | ||
4376 | void | |
f62ce20a | 4377 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4378 | { |
14a5cf38 JH |
4379 | if (cnt <= 0) { |
4380 | PerlIO_flush(f); | |
4381 | } | |
4382 | else { | |
f62ce20a | 4383 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4384 | } |
5e2ab84b NIS |
4385 | } |
4386 | ||
4387 | IV | |
2dc2558e | 4388 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4389 | { |
de009b76 | 4390 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4391 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4392 | /* |
71200d45 NIS |
4393 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4394 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4395 | */ |
4396 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4397 | (PerlIOBase(PerlIONext(f))-> | |
4398 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4399 | return code; | |
5e2ab84b NIS |
4400 | } |
4401 | ||
4402 | SSize_t | |
f62ce20a | 4403 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4404 | { |
14a5cf38 JH |
4405 | SSize_t avail = PerlIO_get_cnt(f); |
4406 | SSize_t got = 0; | |
94e529cc | 4407 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4408 | avail = count; |
4409 | if (avail > 0) | |
f62ce20a | 4410 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4411 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4412 | const SSize_t more = |
14a5cf38 JH |
4413 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4414 | if (more >= 0 || got == 0) | |
4415 | got += more; | |
4416 | } | |
4417 | return got; | |
5e2ab84b NIS |
4418 | } |
4419 | ||
27da23d5 | 4420 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4421 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4422 | "pending", |
4423 | sizeof(PerlIOBuf), | |
86e05cf2 | 4424 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4425 | PerlIOPending_pushed, |
44798d05 | 4426 | PerlIOBuf_popped, |
14a5cf38 | 4427 | NULL, |
86e05cf2 | 4428 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4429 | NULL, |
4430 | PerlIOBase_fileno, | |
71200d45 | 4431 | PerlIOBuf_dup, |
14a5cf38 JH |
4432 | PerlIOPending_read, |
4433 | PerlIOBuf_unread, | |
4434 | PerlIOBuf_write, | |
4435 | PerlIOPending_seek, | |
4436 | PerlIOBuf_tell, | |
4437 | PerlIOPending_close, | |
4438 | PerlIOPending_flush, | |
4439 | PerlIOPending_fill, | |
4440 | PerlIOBase_eof, | |
4441 | PerlIOBase_error, | |
4442 | PerlIOBase_clearerr, | |
4443 | PerlIOBase_setlinebuf, | |
4444 | PerlIOBuf_get_base, | |
4445 | PerlIOBuf_bufsiz, | |
4446 | PerlIOBuf_get_ptr, | |
4447 | PerlIOBuf_get_cnt, | |
4448 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4449 | }; |
4450 | ||
4451 | ||
4452 | ||
4453 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4454 | /* |
4455 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4456 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4457 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4458 | * |
4459 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4460 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4461 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4462 | * that it ends at c->nl; these two cases can be distinguished by | |
4463 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4464 | * _unread() and _flush() calls. | |
4465 | * It only matters for read operations. | |
66ecd56b NIS |
4466 | */ |
4467 | ||
14a5cf38 | 4468 | typedef struct { |
22569500 NIS |
4469 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4470 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4471 | * buffer */ |
99efab12 NIS |
4472 | } PerlIOCrlf; |
4473 | ||
ff1e3883 JD |
4474 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4475 | * Otherwise the :crlf layer would always revert back to | |
4476 | * raw mode. | |
4477 | */ | |
4478 | static void | |
4479 | S_inherit_utf8_flag(PerlIO *f) | |
4480 | { | |
4481 | PerlIO *g = PerlIONext(f); | |
4482 | if (PerlIOValid(g)) { | |
4483 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4484 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4485 | } | |
4486 | } | |
4487 | } | |
4488 | ||
f5b9d040 | 4489 | IV |
2dc2558e | 4490 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4491 | { |
14a5cf38 JH |
4492 | IV code; |
4493 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4494 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4495 | #if 0 |
14a5cf38 | 4496 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4497 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4498 | PerlIOBase(f)->flags); |
5e2ab84b | 4499 | #endif |
8229d19f | 4500 | { |
5da08ab0 LT |
4501 | /* If the old top layer is a CRLF layer, reactivate it (if |
4502 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4503 | PerlIO *g = PerlIONext(f); |
7826b36f | 4504 | if (PerlIOValid(g)) { |
8229d19f JH |
4505 | PerlIOl *b = PerlIOBase(g); |
4506 | if (b && b->tab == &PerlIO_crlf) { | |
4507 | if (!(b->flags & PERLIO_F_CRLF)) | |
4508 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4509 | S_inherit_utf8_flag(g); |
8229d19f JH |
4510 | PerlIO_pop(aTHX_ f); |
4511 | return code; | |
7826b36f | 4512 | } |
8229d19f JH |
4513 | } |
4514 | } | |
ff1e3883 | 4515 | S_inherit_utf8_flag(f); |
14a5cf38 | 4516 | return code; |
f5b9d040 NIS |
4517 | } |
4518 | ||
4519 | ||
99efab12 | 4520 | SSize_t |
f62ce20a | 4521 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4522 | { |
dcda55fc | 4523 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4524 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4525 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4526 | c->nl = NULL; |
4527 | } | |
4528 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4529 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4530 | else { |
4531 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4532 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4533 | SSize_t unread = 0; | |
4534 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4535 | PerlIO_flush(f); | |
4536 | if (!b->buf) | |
4537 | PerlIO_get_base(f); | |
4538 | if (b->buf) { | |
4539 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4540 | b->end = b->ptr = b->buf + b->bufsiz; | |
4541 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4542 | b->posn -= b->bufsiz; | |
4543 | } | |
4544 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4545 | const int ch = *--buf; |
14a5cf38 JH |
4546 | if (ch == '\n') { |
4547 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4548 | *--(b->ptr) = NATIVE_0xa; |
4549 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4550 | unread++; |
4551 | count--; | |
4552 | } | |
4553 | else { | |
93c2c2ec | 4554 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4555 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4556 | '\r' */ | |
93c2c2ec IZ |
4557 | unread++; |
4558 | count--; | |
14a5cf38 JH |
4559 | } |
4560 | } | |
4561 | else { | |
4562 | *--(b->ptr) = ch; | |
4563 | unread++; | |
4564 | count--; | |
4565 | } | |
4566 | } | |
4567 | } | |
ec1da995 LT |
4568 | if (count > 0) |
4569 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4570 | return unread; |
4571 | } | |
99efab12 NIS |
4572 | } |
4573 | ||
93c2c2ec | 4574 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4575 | SSize_t |
f62ce20a | 4576 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4577 | { |
dcda55fc | 4578 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4579 | if (!b->buf) |
4580 | PerlIO_get_base(f); | |
4581 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4582 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4583 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4584 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4585 | scan: |
76e6dc3a | 4586 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4587 | nl++; |
76e6dc3a | 4588 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4589 | test: |
4590 | if (nl + 1 < b->end) { | |
76e6dc3a | 4591 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4592 | *nl = '\n'; |
4593 | c->nl = nl; | |
4594 | } | |
4595 | else { | |
4596 | /* | |
71200d45 | 4597 | * Not CR,LF but just CR |
14a5cf38 JH |
4598 | */ |
4599 | nl++; | |
4600 | goto scan; | |
4601 | } | |
4602 | } | |
4603 | else { | |
4604 | /* | |
71200d45 | 4605 | * Blast - found CR as last char in buffer |
14a5cf38 | 4606 | */ |
e87a358a | 4607 | |
14a5cf38 JH |
4608 | if (b->ptr < nl) { |
4609 | /* | |
4610 | * They may not care, defer work as long as | |
71200d45 | 4611 | * possible |
14a5cf38 | 4612 | */ |
a0d1d361 | 4613 | c->nl = nl; |
14a5cf38 JH |
4614 | return (nl - b->ptr); |
4615 | } | |
4616 | else { | |
4617 | int code; | |
22569500 | 4618 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4619 | * flush() is concerned */ |
22569500 | 4620 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4621 | /* Note as we have moved buf up flush's |
4622 | posn += ptr-buf | |
4623 | will naturally make posn point at CR | |
4624 | */ | |
22569500 NIS |
4625 | b->bufsiz--; /* Buffer is thus smaller */ |
4626 | code = PerlIO_fill(f); /* Fetch some more */ | |
4627 | b->bufsiz++; /* Restore size for next time */ | |
4628 | b->buf--; /* Point at space */ | |
4629 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4630 | * off */ |
76e6dc3a | 4631 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4632 | if (code == 0) |
22569500 | 4633 | goto test; /* fill() call worked */ |
14a5cf38 | 4634 | /* |
71200d45 | 4635 | * CR at EOF - just fall through |
14a5cf38 | 4636 | */ |
a0d1d361 | 4637 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4638 | } |
4639 | } | |
4640 | } | |
4641 | } | |
4642 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4643 | } | |
4644 | return 0; | |
99efab12 NIS |
4645 | } |
4646 | ||
4647 | void | |
f62ce20a | 4648 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4649 | { |
dcda55fc AL |
4650 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4651 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4652 | if (!b->buf) |
4653 | PerlIO_get_base(f); | |
4654 | if (!ptr) { | |
a0d1d361 | 4655 | if (c->nl) { |
14a5cf38 | 4656 | ptr = c->nl + 1; |
76e6dc3a | 4657 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4658 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4659 | ptr--; |
4660 | } | |
4661 | } | |
14a5cf38 JH |
4662 | else { |
4663 | ptr = b->end; | |
14a5cf38 JH |
4664 | } |
4665 | ptr -= cnt; | |
4666 | } | |
4667 | else { | |
6f207bd3 | 4668 | NOOP; |
3b4bd3fd | 4669 | #if 0 |
14a5cf38 | 4670 | /* |
71200d45 | 4671 | * Test code - delete when it works ... |
14a5cf38 | 4672 | */ |
3b4bd3fd | 4673 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4674 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4675 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4676 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4677 | chk--; |
22569500 | 4678 | } |
14a5cf38 JH |
4679 | chk -= cnt; |
4680 | ||
a0d1d361 | 4681 | if (ptr != chk ) { |
99ef548b | 4682 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4683 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4684 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4685 | } |
99ef548b | 4686 | #endif |
14a5cf38 JH |
4687 | } |
4688 | if (c->nl) { | |
4689 | if (ptr > c->nl) { | |
4690 | /* | |
71200d45 | 4691 | * They have taken what we lied about |
14a5cf38 | 4692 | */ |
76e6dc3a | 4693 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4694 | c->nl = NULL; |
4695 | ptr++; | |
4696 | } | |
4697 | } | |
4698 | b->ptr = ptr; | |
4699 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4700 | } |
4701 | ||
4702 | SSize_t | |
f62ce20a | 4703 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4704 | { |
14a5cf38 | 4705 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4706 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4707 | else { |
dcda55fc | 4708 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4709 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4710 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4711 | if (!b->buf) |
4712 | PerlIO_get_base(f); | |
4713 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4714 | return 0; | |
4715 | while (buf < ebuf) { | |
dcda55fc | 4716 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4717 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4718 | while (buf < ebuf && b->ptr < eptr) { | |
4719 | if (*buf == '\n') { | |
4720 | if ((b->ptr + 2) > eptr) { | |
4721 | /* | |
71200d45 | 4722 | * Not room for both |
14a5cf38 JH |
4723 | */ |
4724 | PerlIO_flush(f); | |
4725 | break; | |
4726 | } | |
4727 | else { | |
76e6dc3a KW |
4728 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4729 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4730 | buf++; |
4731 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4732 | PerlIO_flush(f); | |
4733 | break; | |
4734 | } | |
4735 | } | |
4736 | } | |
4737 | else { | |
dcda55fc | 4738 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4739 | } |
4740 | if (b->ptr >= eptr) { | |
4741 | PerlIO_flush(f); | |
4742 | break; | |
4743 | } | |
4744 | } | |
4745 | } | |
4746 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4747 | PerlIO_flush(f); | |
4748 | return (buf - (STDCHAR *) vbuf); | |
4749 | } | |
99efab12 NIS |
4750 | } |
4751 | ||
4752 | IV | |
f62ce20a | 4753 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4754 | { |
dcda55fc | 4755 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4756 | if (c->nl) { |
76e6dc3a | 4757 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4758 | c->nl = NULL; |
4759 | } | |
f62ce20a | 4760 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4761 | } |
4762 | ||
86e05cf2 NIS |
4763 | IV |
4764 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4765 | { | |
4766 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4767 | /* In text mode - flush any pending stuff and flip it */ | |
4768 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4769 | #ifndef PERLIO_USING_CRLF | |
4770 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4771 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4772 | #endif |
4773 | } | |
4774 | return 0; | |
4775 | } | |
4776 | ||
27da23d5 | 4777 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4778 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4779 | "crlf", |
4780 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4781 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4782 | PerlIOCrlf_pushed, |
44798d05 | 4783 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4784 | PerlIOBuf_open, |
86e05cf2 | 4785 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4786 | NULL, |
4787 | PerlIOBase_fileno, | |
71200d45 | 4788 | PerlIOBuf_dup, |
de009b76 | 4789 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4790 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4791 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4792 | PerlIOBuf_seek, |
4793 | PerlIOBuf_tell, | |
4794 | PerlIOBuf_close, | |
4795 | PerlIOCrlf_flush, | |
4796 | PerlIOBuf_fill, | |
4797 | PerlIOBase_eof, | |
4798 | PerlIOBase_error, | |
4799 | PerlIOBase_clearerr, | |
4800 | PerlIOBase_setlinebuf, | |
4801 | PerlIOBuf_get_base, | |
4802 | PerlIOBuf_bufsiz, | |
4803 | PerlIOBuf_get_ptr, | |
4804 | PerlIOCrlf_get_cnt, | |
4805 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4806 | }; |
4807 | ||
9e353e3b | 4808 | PerlIO * |
e87a358a | 4809 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4810 | { |
a1ea730d | 4811 | if (!PL_perlio) { |
14a5cf38 JH |
4812 | PerlIO_stdstreams(aTHX); |
4813 | } | |
303f2dc3 | 4814 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4815 | } |
4816 | ||
9e353e3b | 4817 | PerlIO * |
e87a358a | 4818 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4819 | { |
a1ea730d | 4820 | if (!PL_perlio) { |
14a5cf38 JH |
4821 | PerlIO_stdstreams(aTHX); |
4822 | } | |
303f2dc3 | 4823 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4824 | } |
4825 | ||
9e353e3b | 4826 | PerlIO * |
e87a358a | 4827 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4828 | { |
a1ea730d | 4829 | if (!PL_perlio) { |
14a5cf38 JH |
4830 | PerlIO_stdstreams(aTHX); |
4831 | } | |
303f2dc3 | 4832 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4833 | } |
4834 | ||
4835 | /*--------------------------------------------------------------------------------------*/ | |
4836 | ||
9e353e3b NIS |
4837 | char * |
4838 | PerlIO_getname(PerlIO *f, char *buf) | |
4839 | { | |
a15cef0c | 4840 | #ifdef VMS |
dbf7dff6 | 4841 | dTHX; |
73d840c0 | 4842 | char *name = NULL; |
7659f319 | 4843 | bool exported = FALSE; |
14a5cf38 | 4844 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4845 | if (!stdio) { |
4846 | stdio = PerlIO_exportFILE(f,0); | |
4847 | exported = TRUE; | |
4848 | } | |
4849 | if (stdio) { | |
14a5cf38 | 4850 | name = fgetname(stdio, buf); |
7659f319 CB |
4851 | if (exported) PerlIO_releaseFILE(f,stdio); |
4852 | } | |
73d840c0 | 4853 | return name; |
a15cef0c | 4854 | #else |
8772537c AL |
4855 | PERL_UNUSED_ARG(f); |
4856 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4857 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4858 | return NULL; |
a15cef0c | 4859 | #endif |
9e353e3b NIS |
4860 | } |
4861 | ||
4862 | ||
4863 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4864 | /* |
4865 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4866 | * terms of above |
14a5cf38 | 4867 | */ |
9e353e3b | 4868 | |
e87a358a NIS |
4869 | #undef PerlIO_fdopen |
4870 | PerlIO * | |
4871 | PerlIO_fdopen(int fd, const char *mode) | |
4872 | { | |
4873 | dTHX; | |
bd61b366 | 4874 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4875 | } |
4876 | ||
4877 | #undef PerlIO_open | |
4878 | PerlIO * | |
4879 | PerlIO_open(const char *path, const char *mode) | |
4880 | { | |
4881 | dTHX; | |
42d9b98d | 4882 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4883 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4884 | } |
4885 | ||
4886 | #undef Perlio_reopen | |
4887 | PerlIO * | |
4888 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4889 | { | |
4890 | dTHX; | |
42d9b98d | 4891 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4892 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4893 | } |
4894 | ||
9e353e3b | 4895 | #undef PerlIO_getc |
6f9d8c32 | 4896 | int |
9e353e3b | 4897 | PerlIO_getc(PerlIO *f) |
760ac839 | 4898 | { |
e87a358a | 4899 | dTHX; |
14a5cf38 | 4900 | STDCHAR buf[1]; |
de009b76 | 4901 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4902 | return (unsigned char) buf[0]; |
4903 | } | |
4904 | return EOF; | |
313ca112 NIS |
4905 | } |
4906 | ||
4907 | #undef PerlIO_ungetc | |
4908 | int | |
4909 | PerlIO_ungetc(PerlIO *f, int ch) | |
4910 | { | |
e87a358a | 4911 | dTHX; |
14a5cf38 JH |
4912 | if (ch != EOF) { |
4913 | STDCHAR buf = ch; | |
4914 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4915 | return ch; | |
4916 | } | |
4917 | return EOF; | |
760ac839 LW |
4918 | } |
4919 | ||
9e353e3b NIS |
4920 | #undef PerlIO_putc |
4921 | int | |
4922 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4923 | { |
e87a358a | 4924 | dTHX; |
14a5cf38 JH |
4925 | STDCHAR buf = ch; |
4926 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4927 | } |
4928 | ||
9e353e3b | 4929 | #undef PerlIO_puts |
760ac839 | 4930 | int |
9e353e3b | 4931 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4932 | { |
e87a358a | 4933 | dTHX; |
dcda55fc | 4934 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4935 | } |
4936 | ||
4937 | #undef PerlIO_rewind | |
4938 | void | |
c78749f2 | 4939 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4940 | { |
e87a358a | 4941 | dTHX; |
14a5cf38 JH |
4942 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4943 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4944 | } |
4945 | ||
4946 | #undef PerlIO_vprintf | |
4947 | int | |
4948 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4949 | { | |
14a5cf38 | 4950 | dTHX; |
53ce71d3 | 4951 | SV * sv; |
b83604b4 | 4952 | const char *s; |
14a5cf38 JH |
4953 | STRLEN len; |
4954 | SSize_t wrote; | |
2cc61e15 | 4955 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4956 | va_list apc; |
4957 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4958 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 4959 | va_end(apc); |
2cc61e15 | 4960 | #else |
53ce71d3 | 4961 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4962 | #endif |
b83604b4 | 4963 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4964 | wrote = PerlIO_write(f, s, len); |
4965 | SvREFCNT_dec(sv); | |
4966 | return wrote; | |
760ac839 LW |
4967 | } |
4968 | ||
4969 | #undef PerlIO_printf | |
6f9d8c32 | 4970 | int |
14a5cf38 | 4971 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4972 | { |
14a5cf38 JH |
4973 | va_list ap; |
4974 | int result; | |
4975 | va_start(ap, fmt); | |
4976 | result = PerlIO_vprintf(f, fmt, ap); | |
4977 | va_end(ap); | |
4978 | return result; | |
760ac839 LW |
4979 | } |
4980 | ||
4981 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4982 | int |
14a5cf38 | 4983 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4984 | { |
e87a358a | 4985 | dTHX; |
14a5cf38 JH |
4986 | va_list ap; |
4987 | int result; | |
4988 | va_start(ap, fmt); | |
4989 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
4990 | va_end(ap); | |
4991 | return result; | |
760ac839 LW |
4992 | } |
4993 | ||
4994 | #undef PerlIO_tmpfile | |
4995 | PerlIO * | |
c78749f2 | 4996 | PerlIO_tmpfile(void) |
760ac839 | 4997 | { |
dbf7dff6 | 4998 | #ifndef WIN32 |
2941a2e1 | 4999 | dTHX; |
dbf7dff6 | 5000 | #endif |
2941a2e1 | 5001 | PerlIO *f = NULL; |
2941a2e1 | 5002 | #ifdef WIN32 |
de009b76 | 5003 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5004 | if (fd >= 0) |
5005 | f = PerlIO_fdopen(fd, "w+b"); | |
5006 | #else /* WIN32 */ | |
460c8493 | 5007 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5008 | int fd = -1; |
5009 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 5010 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 5011 | SV * sv = NULL; |
e57270be | 5012 | int old_umask = umask(0177); |
2941a2e1 JH |
5013 | /* |
5014 | * I have no idea how portable mkstemp() is ... NI-S | |
5015 | */ | |
7299ca58 | 5016 | if (tmpdir && *tmpdir) { |
0b99e986 | 5017 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5018 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5019 | sv_catpv(sv, tempname + 4); |
5020 | fd = mkstemp(SvPVX(sv)); | |
5021 | } | |
5022 | if (fd < 0) { | |
e40f8e80 | 5023 | SvREFCNT_dec(sv); |
7299ca58 | 5024 | sv = NULL; |
0b99e986 RGS |
5025 | /* else we try /tmp */ |
5026 | fd = mkstemp(tempname); | |
5027 | } | |
b7561fc9 BF |
5028 | if (fd < 0) { |
5029 | /* Try cwd */ | |
5030 | sv = newSVpvs("."); | |
5031 | sv_catpv(sv, tempname + 4); | |
5032 | fd = mkstemp(SvPVX(sv)); | |
5033 | } | |
60f7fc1e | 5034 | umask(old_umask); |
2941a2e1 JH |
5035 | if (fd >= 0) { |
5036 | f = PerlIO_fdopen(fd, "w+"); | |
5037 | if (f) | |
5038 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5039 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5040 | } |
ef8d46e8 | 5041 | SvREFCNT_dec(sv); |
2941a2e1 | 5042 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5043 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5044 | |
085e731f CB |
5045 | if (stdio) |
5046 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5047 | ||
2941a2e1 JH |
5048 | # endif /* else HAS_MKSTEMP */ |
5049 | #endif /* else WIN32 */ | |
5050 | return f; | |
760ac839 LW |
5051 | } |
5052 | ||
0ea86a10 FC |
5053 | void |
5054 | Perl_PerlIO_save_errno(pTHX_ PerlIO *f) | |
5055 | { | |
5056 | if (!PerlIOValid(f)) | |
5057 | return; | |
5058 | PerlIOBase(f)->err = errno; | |
5059 | #ifdef VMS | |
5060 | PerlIOBase(f)->os_err = vaxc$errno; | |
5061 | #elif defined(OS2) | |
5062 | PerlIOBase(f)->os_err = Perl_rc; | |
5063 | #elif defined(WIN32) | |
5064 | PerlIOBase(f)->os_err = GetLastError(); | |
5065 | #endif | |
5066 | } | |
5067 | ||
5068 | void | |
5069 | Perl_PerlIO_restore_errno(pTHX_ PerlIO *f) | |
5070 | { | |
5071 | if (!PerlIOValid(f)) | |
5072 | return; | |
5073 | SETERRNO(PerlIOBase(f)->err, PerlIOBase(f)->os_err); | |
5074 | #ifdef OS2 | |
5075 | Perl_rc = PerlIOBase(f)->os_err); | |
5076 | #elif defined(WIN32) | |
5077 | SetLastError(PerlIOBase(f)->os_err); | |
5078 | #endif | |
5079 | } | |
5080 | ||
6f9d8c32 NIS |
5081 | #undef HAS_FSETPOS |
5082 | #undef HAS_FGETPOS | |
5083 | ||
760ac839 | 5084 | |
9e353e3b | 5085 | /*======================================================================================*/ |
14a5cf38 | 5086 | /* |
71200d45 NIS |
5087 | * Now some functions in terms of above which may be needed even if we are |
5088 | * not in true PerlIO mode | |
9e353e3b | 5089 | */ |
188f0c84 YO |
5090 | const char * |
5091 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5092 | { | |
8b850bd5 NC |
5093 | const char *direction = NULL; |
5094 | SV *layers; | |
188f0c84 YO |
5095 | /* |
5096 | * Need to supply default layer info from open.pm | |
5097 | */ | |
8b850bd5 NC |
5098 | |
5099 | if (!PL_curcop) | |
5100 | return NULL; | |
5101 | ||
5102 | if (mode && mode[0] != 'r') { | |
5103 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5104 | direction = "open>"; | |
5105 | } else { | |
5106 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5107 | direction = "open<"; | |
188f0c84 | 5108 | } |
8b850bd5 NC |
5109 | if (!direction) |
5110 | return NULL; | |
5111 | ||
20439bc7 | 5112 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5113 | |
5114 | assert(layers); | |
5115 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5116 | } |
5117 | ||
9e353e3b | 5118 | |
760ac839 LW |
5119 | #ifndef HAS_FSETPOS |
5120 | #undef PerlIO_setpos | |
5121 | int | |
766a733e | 5122 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5123 | { |
14a5cf38 | 5124 | if (SvOK(pos)) { |
e1a83e70 DD |
5125 | if (f) { |
5126 | dTHX; | |
5127 | STRLEN len; | |
5128 | const Off_t * const posn = (Off_t *) SvPV(pos, len); | |
5129 | if(len == sizeof(Off_t)) | |
5130 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5131 | } | |
14a5cf38 | 5132 | } |
93189314 | 5133 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5134 | return -1; |
760ac839 | 5135 | } |
c411622e | 5136 | #else |
c411622e | 5137 | #undef PerlIO_setpos |
5138 | int | |
766a733e | 5139 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5140 | { |
14a5cf38 | 5141 | if (SvOK(pos)) { |
e1a83e70 DD |
5142 | if (f) { |
5143 | dTHX; | |
5144 | STRLEN len; | |
5145 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); | |
5146 | if(len == sizeof(Fpos_t)) | |
2d4389e4 | 5147 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
e1a83e70 | 5148 | return fsetpos64(f, fpos); |
d9b3e12d | 5149 | #else |
e1a83e70 | 5150 | return fsetpos(f, fpos); |
d9b3e12d | 5151 | #endif |
14a5cf38 | 5152 | } |
766a733e | 5153 | } |
93189314 | 5154 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5155 | return -1; |
c411622e | 5156 | } |
5157 | #endif | |
760ac839 LW |
5158 | |
5159 | #ifndef HAS_FGETPOS | |
5160 | #undef PerlIO_getpos | |
5161 | int | |
766a733e | 5162 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5163 | { |
14a5cf38 JH |
5164 | dTHX; |
5165 | Off_t posn = PerlIO_tell(f); | |
5166 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5167 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5168 | } |
c411622e | 5169 | #else |
c411622e | 5170 | #undef PerlIO_getpos |
5171 | int | |
766a733e | 5172 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5173 | { |
14a5cf38 JH |
5174 | dTHX; |
5175 | Fpos_t fpos; | |
5176 | int code; | |
2d4389e4 | 5177 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5178 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5179 | #else |
14a5cf38 | 5180 | code = fgetpos(f, &fpos); |
d9b3e12d | 5181 | #endif |
14a5cf38 JH |
5182 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5183 | return code; | |
c411622e | 5184 | } |
5185 | #endif | |
760ac839 | 5186 | |
97cb92d6 | 5187 | #if !defined(HAS_VPRINTF) |
760ac839 LW |
5188 | |
5189 | int | |
c78749f2 | 5190 | vprintf(char *pat, char *args) |
662a7e3f CS |
5191 | { |
5192 | _doprnt(pat, args, stdout); | |
22569500 | 5193 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5194 | * value */ |
662a7e3f CS |
5195 | } |
5196 | ||
5197 | int | |
c78749f2 | 5198 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5199 | { |
5200 | _doprnt(pat, args, fd); | |
22569500 | 5201 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5202 | * value */ |
760ac839 LW |
5203 | } |
5204 | ||
5205 | #endif | |
5206 | ||
db6e00bd DD |
5207 | /* print a failure format string message to stderr and fail exit the process |
5208 | using only libc without depending on any perl data structures being | |
5209 | initialized. | |
5210 | */ | |
5211 | ||
5212 | void | |
5213 | Perl_noperl_die(const char* pat, ...) | |
5214 | { | |
5215 | va_list(arglist); | |
5216 | PERL_ARGS_ASSERT_NOPERL_DIE; | |
5217 | va_start(arglist, pat); | |
5218 | vfprintf(stderr, pat, arglist); | |
5219 | va_end(arglist); | |
5220 | exit(1); | |
5221 | } | |
5222 | ||
9cfa90c0 | 5223 | /* |
14d04a33 | 5224 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5225 | */ |