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); | |
e17bc05a TC |
354 | |
355 | if (!DEBUG_i_TEST) | |
356 | return; | |
357 | ||
582588d2 | 358 | if (!PL_perlio_debug_fd) { |
284167a5 | 359 | if (!TAINTING_get && |
985213f2 AB |
360 | PerlProc_getuid() == PerlProc_geteuid() && |
361 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
362 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
363 | if (s && *s) | |
364 | PL_perlio_debug_fd | |
365 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
366 | else | |
64320867 | 367 | PL_perlio_debug_fd = PerlLIO_dup(2); /* stderr */ |
582588d2 | 368 | } else { |
64320867 TC |
369 | /* tainting or set*id, so ignore the environment and send the |
370 | debug output to stderr, like other -D switches. */ | |
371 | PL_perlio_debug_fd = PerlLIO_dup(2); /* stderr */ | |
582588d2 | 372 | } |
14a5cf38 | 373 | } |
27da23d5 | 374 | if (PL_perlio_debug_fd > 0) { |
70ace5da | 375 | #ifdef USE_ITHREADS |
dcda55fc | 376 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
377 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
378 | char buffer[1024]; | |
1208b3dd JH |
379 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
380 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
b469f1e0 | 381 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2)); |
70ace5da | 382 | #else |
dcda55fc AL |
383 | const char *s = CopFILE(PL_curcop); |
384 | STRLEN len; | |
550e2ce0 NC |
385 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
386 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
387 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
388 | ||
b83604b4 | 389 | s = SvPV_const(sv, len); |
b469f1e0 | 390 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len)); |
14a5cf38 | 391 | SvREFCNT_dec(sv); |
70ace5da | 392 | #endif |
14a5cf38 JH |
393 | } |
394 | va_end(ap); | |
6f9d8c32 NIS |
395 | } |
396 | ||
9e353e3b NIS |
397 | /*--------------------------------------------------------------------------------------*/ |
398 | ||
14a5cf38 | 399 | /* |
71200d45 | 400 | * Inner level routines |
14a5cf38 | 401 | */ |
9e353e3b | 402 | |
16865ff7 DM |
403 | /* check that the head field of each layer points back to the head */ |
404 | ||
405 | #ifdef DEBUGGING | |
406 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
407 | static void | |
408 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
409 | { | |
410 | PerlIOl *head, *p; | |
411 | int seen = 0; | |
dd791c72 JH |
412 | #ifndef PERL_IMPLICIT_SYS |
413 | PERL_UNUSED_CONTEXT; | |
414 | #endif | |
16865ff7 DM |
415 | if (!PerlIOValid(f)) |
416 | return; | |
417 | p = head = PerlIOBase(f)->head; | |
418 | assert(p); | |
419 | do { | |
420 | assert(p->head == head); | |
421 | if (p == (PerlIOl*)f) | |
422 | seen = 1; | |
423 | p = p->next; | |
424 | } while (p); | |
425 | assert(seen); | |
426 | } | |
427 | #else | |
428 | # define VERIFY_HEAD(f) | |
429 | #endif | |
430 | ||
431 | ||
14a5cf38 | 432 | /* |
71200d45 | 433 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 434 | */ |
05d1247b | 435 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 436 | |
8995e67d DM |
437 | static void |
438 | PerlIO_init_table(pTHX) | |
439 | { | |
440 | if (PL_perlio) | |
441 | return; | |
442 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
443 | } | |
444 | ||
445 | ||
446 | ||
760ac839 | 447 | PerlIO * |
5f1a76d0 | 448 | PerlIO_allocate(pTHX) |
6f9d8c32 | 449 | { |
14a5cf38 | 450 | /* |
71200d45 | 451 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 452 | */ |
303f2dc3 DM |
453 | PerlIOl **last; |
454 | PerlIOl *f; | |
a1ea730d | 455 | last = &PL_perlio; |
14a5cf38 JH |
456 | while ((f = *last)) { |
457 | int i; | |
303f2dc3 | 458 | last = (PerlIOl **) (f); |
14a5cf38 | 459 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 460 | if (!((++f)->next)) { |
4e0ef342 | 461 | goto good_exit; |
14a5cf38 JH |
462 | } |
463 | } | |
464 | } | |
303f2dc3 | 465 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
466 | if (!f) { |
467 | return NULL; | |
468 | } | |
303f2dc3 | 469 | *last = (PerlIOl*) f++; |
4e0ef342 DD |
470 | |
471 | good_exit: | |
abf9167d | 472 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 473 | f->tab = NULL; |
16865ff7 | 474 | f->head = f; |
303f2dc3 | 475 | return (PerlIO*) f; |
05d1247b NIS |
476 | } |
477 | ||
a1ea730d NIS |
478 | #undef PerlIO_fdupopen |
479 | PerlIO * | |
ecdeb87c | 480 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 481 | { |
04892f78 | 482 | if (PerlIOValid(f)) { |
de009b76 | 483 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
e17bc05a | 484 | DEBUG_i( PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param) ); |
210e727c JH |
485 | if (tab && tab->Dup) |
486 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
487 | else { |
488 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
489 | } | |
a1ea730d | 490 | } |
210e727c JH |
491 | else |
492 | SETERRNO(EBADF, SS_IVCHAN); | |
493 | ||
494 | return NULL; | |
a1ea730d NIS |
495 | } |
496 | ||
497 | void | |
303f2dc3 | 498 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 499 | { |
303f2dc3 | 500 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
501 | if (table) { |
502 | int i; | |
303f2dc3 | 503 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 504 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
505 | PerlIOl * const f = table + i; |
506 | if (f->next) { | |
507 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
508 | } |
509 | } | |
3a1ee7e8 | 510 | Safefree(table); |
14a5cf38 | 511 | *tablep = NULL; |
05d1247b | 512 | } |
05d1247b NIS |
513 | } |
514 | ||
fcf2db38 NIS |
515 | |
516 | PerlIO_list_t * | |
3a1ee7e8 | 517 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 518 | { |
14a5cf38 | 519 | PerlIO_list_t *list; |
96a5add6 | 520 | PERL_UNUSED_CONTEXT; |
a02a5408 | 521 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
522 | list->refcnt = 1; |
523 | return list; | |
fcf2db38 NIS |
524 | } |
525 | ||
526 | void | |
3a1ee7e8 | 527 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 528 | { |
14a5cf38 JH |
529 | if (list) { |
530 | if (--list->refcnt == 0) { | |
531 | if (list->array) { | |
14a5cf38 | 532 | IV i; |
ef8d46e8 VP |
533 | for (i = 0; i < list->cur; i++) |
534 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
535 | Safefree(list->array); |
536 | } | |
537 | Safefree(list); | |
538 | } | |
539 | } | |
fcf2db38 NIS |
540 | } |
541 | ||
542 | void | |
3a1ee7e8 | 543 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 544 | { |
334e202e | 545 | PerlIO_pair_t *p; |
b37c2d43 AL |
546 | PERL_UNUSED_CONTEXT; |
547 | ||
14a5cf38 JH |
548 | if (list->cur >= list->len) { |
549 | list->len += 8; | |
550 | if (list->array) | |
551 | Renew(list->array, list->len, PerlIO_pair_t); | |
552 | else | |
a02a5408 | 553 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
554 | } |
555 | p = &(list->array[list->cur++]); | |
556 | p->funcs = funcs; | |
557 | if ((p->arg = arg)) { | |
f84c484e | 558 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 559 | } |
fcf2db38 NIS |
560 | } |
561 | ||
3a1ee7e8 NIS |
562 | PerlIO_list_t * |
563 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
564 | { | |
b37c2d43 | 565 | PerlIO_list_t *list = NULL; |
694c95cf JH |
566 | if (proto) { |
567 | int i; | |
568 | list = PerlIO_list_alloc(aTHX); | |
569 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 570 | SV *arg = proto->array[i].arg; |
24d147a6 | 571 | #ifdef USE_ITHREADS |
a951d81d BL |
572 | if (arg && param) |
573 | arg = sv_dup(arg, param); | |
574 | #else | |
575 | PERL_UNUSED_ARG(param); | |
576 | #endif | |
694c95cf JH |
577 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
578 | } | |
3a1ee7e8 NIS |
579 | } |
580 | return list; | |
581 | } | |
4a4a6116 | 582 | |
05d1247b | 583 | void |
3a1ee7e8 | 584 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 585 | { |
3aaf42a7 | 586 | #ifdef USE_ITHREADS |
303f2dc3 DM |
587 | PerlIOl **table = &proto->Iperlio; |
588 | PerlIOl *f; | |
3a1ee7e8 NIS |
589 | PL_perlio = NULL; |
590 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
591 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 592 | PerlIO_init_table(aTHX); |
e17bc05a | 593 | DEBUG_i( PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto) ); |
3a1ee7e8 NIS |
594 | while ((f = *table)) { |
595 | int i; | |
303f2dc3 | 596 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 597 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
598 | if (f->next) { |
599 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
600 | } |
601 | f++; | |
602 | } | |
603 | } | |
1b6737cc | 604 | #else |
a25429c6 | 605 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
606 | PERL_UNUSED_ARG(proto); |
607 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 608 | #endif |
9a6404c5 DM |
609 | } |
610 | ||
611 | void | |
13621cfb NIS |
612 | PerlIO_destruct(pTHX) |
613 | { | |
303f2dc3 DM |
614 | PerlIOl **table = &PL_perlio; |
615 | PerlIOl *f; | |
694c95cf | 616 | #ifdef USE_ITHREADS |
e17bc05a | 617 | DEBUG_i( PerlIO_debug("Destruct %p\n",(void*)aTHX) ); |
694c95cf | 618 | #endif |
14a5cf38 JH |
619 | while ((f = *table)) { |
620 | int i; | |
303f2dc3 | 621 | table = (PerlIOl **) (f++); |
14a5cf38 | 622 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 623 | PerlIO *x = &(f->next); |
dcda55fc | 624 | const PerlIOl *l; |
14a5cf38 | 625 | while ((l = *x)) { |
cc6623a8 | 626 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
e17bc05a | 627 | DEBUG_i( PerlIO_debug("Destruct popping %s\n", l->tab->name) ); |
14a5cf38 JH |
628 | PerlIO_flush(x); |
629 | PerlIO_pop(aTHX_ x); | |
630 | } | |
631 | else { | |
632 | x = PerlIONext(x); | |
633 | } | |
634 | } | |
635 | f++; | |
636 | } | |
637 | } | |
13621cfb NIS |
638 | } |
639 | ||
640 | void | |
a999f61b | 641 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 642 | { |
dcda55fc | 643 | const PerlIOl *l = *f; |
16865ff7 | 644 | VERIFY_HEAD(f); |
14a5cf38 | 645 | if (l) { |
e17bc05a TC |
646 | DEBUG_i( PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
647 | l->tab ? l->tab->name : "(Null)") ); | |
cc6623a8 | 648 | if (l->tab && l->tab->Popped) { |
14a5cf38 JH |
649 | /* |
650 | * If popped returns non-zero do not free its layer structure | |
651 | * it has either done so itself, or it is shared and still in | |
71200d45 | 652 | * use |
14a5cf38 | 653 | */ |
f62ce20a | 654 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
655 | return; |
656 | } | |
abf9167d DM |
657 | if (PerlIO_lockcnt(f)) { |
658 | /* we're in use; defer freeing the structure */ | |
659 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
660 | PerlIOBase(f)->tab = NULL; | |
661 | } | |
662 | else { | |
663 | *f = l->next; | |
664 | Safefree(l); | |
665 | } | |
666 | ||
a8c08ecd | 667 | } |
6f9d8c32 NIS |
668 | } |
669 | ||
39f7a870 JH |
670 | /* Return as an array the stack of layers on a filehandle. Note that |
671 | * the stack is returned top-first in the array, and there are three | |
672 | * times as many array elements as there are layers in the stack: the | |
673 | * first element of a layer triplet is the name, the second one is the | |
674 | * arguments, and the third one is the flags. */ | |
675 | ||
676 | AV * | |
677 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
678 | { | |
dcda55fc | 679 | AV * const av = newAV(); |
39f7a870 | 680 | |
dcda55fc AL |
681 | if (PerlIOValid(f)) { |
682 | PerlIOl *l = PerlIOBase(f); | |
683 | ||
684 | while (l) { | |
92e45a3e NC |
685 | /* There is some collusion in the implementation of |
686 | XS_PerlIO_get_layers - it knows that name and flags are | |
687 | generated as fresh SVs here, and takes advantage of that to | |
688 | "copy" them by taking a reference. If it changes here, it needs | |
689 | to change there too. */ | |
dcda55fc AL |
690 | SV * const name = l->tab && l->tab->name ? |
691 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
692 | SV * const arg = l->tab && l->tab->Getarg ? | |
693 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
694 | av_push(av, name); | |
695 | av_push(av, arg); | |
696 | av_push(av, newSViv((IV)l->flags)); | |
697 | l = l->next; | |
698 | } | |
699 | } | |
39f7a870 | 700 | |
dcda55fc | 701 | return av; |
39f7a870 JH |
702 | } |
703 | ||
9e353e3b | 704 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 705 | /* |
71200d45 | 706 | * XS Interface for perl code |
14a5cf38 | 707 | */ |
9e353e3b | 708 | |
fcf2db38 | 709 | PerlIO_funcs * |
2edd7e44 | 710 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 711 | { |
20b7effb | 712 | |
14a5cf38 JH |
713 | IV i; |
714 | if ((SSize_t) len <= 0) | |
715 | len = strlen(name); | |
3a1ee7e8 | 716 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 717 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
718 | const STRLEN this_len = strlen(f->name); |
719 | if (this_len == len && memEQ(f->name, name, len)) { | |
e17bc05a | 720 | DEBUG_i( PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f) ); |
14a5cf38 JH |
721 | return f; |
722 | } | |
723 | } | |
3a1ee7e8 NIS |
724 | if (load && PL_subname && PL_def_layerlist |
725 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
726 | if (PL_in_load_module) { |
727 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
728 | return NULL; | |
729 | } else { | |
396482e1 | 730 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 731 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 732 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 733 | ENTER; |
4fa7c2bf | 734 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 735 | if (cv) { |
9cfa90c0 | 736 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 737 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 738 | } |
4fa7c2bf | 739 | PL_in_load_module = TRUE; |
d7a09b41 SR |
740 | /* |
741 | * The two SVs are magically freed by load_module | |
742 | */ | |
a0714e2c | 743 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
744 | LEAVE; |
745 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
746 | } | |
14a5cf38 | 747 | } |
e17bc05a | 748 | DEBUG_i( PerlIO_debug("Cannot find %.*s\n", (int) len, name) ); |
14a5cf38 | 749 | return NULL; |
f3862f8b NIS |
750 | } |
751 | ||
2a1bc955 | 752 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
753 | |
754 | static int | |
755 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
756 | { | |
14a5cf38 | 757 | if (SvROK(sv)) { |
159b6efe | 758 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
759 | PerlIO * const ifp = IoIFP(io); |
760 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
761 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
762 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
763 | } |
764 | return 0; | |
b13b2135 NIS |
765 | } |
766 | ||
767 | static int | |
768 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
769 | { | |
14a5cf38 | 770 | if (SvROK(sv)) { |
159b6efe | 771 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
772 | PerlIO * const ifp = IoIFP(io); |
773 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
774 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
775 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
776 | } |
777 | return 0; | |
b13b2135 NIS |
778 | } |
779 | ||
780 | static int | |
781 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
782 | { | |
be2597df | 783 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 784 | return 0; |
b13b2135 NIS |
785 | } |
786 | ||
787 | static int | |
788 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
789 | { | |
be2597df | 790 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 791 | return 0; |
b13b2135 NIS |
792 | } |
793 | ||
794 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
795 | perlio_mg_get, |
796 | perlio_mg_set, | |
22569500 | 797 | NULL, /* len */ |
14a5cf38 JH |
798 | perlio_mg_clear, |
799 | perlio_mg_free | |
b13b2135 NIS |
800 | }; |
801 | ||
15eb3045 | 802 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
803 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
804 | { | |
14a5cf38 | 805 | dXSARGS; |
dcda55fc AL |
806 | SV * const sv = SvRV(ST(1)); |
807 | AV * const av = newAV(); | |
14a5cf38 JH |
808 | MAGIC *mg; |
809 | int count = 0; | |
810 | int i; | |
ad64d0ec | 811 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
812 | SvRMAGICAL_off(sv); |
813 | mg = mg_find(sv, PERL_MAGIC_ext); | |
814 | mg->mg_virtual = &perlio_vtab; | |
815 | mg_magical(sv); | |
be2597df | 816 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
817 | for (i = 2; i < items; i++) { |
818 | STRLEN len; | |
dcda55fc AL |
819 | const char * const name = SvPV_const(ST(i), len); |
820 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 821 | if (layer) { |
b37c2d43 | 822 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
823 | } |
824 | else { | |
825 | ST(count) = ST(i); | |
826 | count++; | |
827 | } | |
828 | } | |
829 | SvREFCNT_dec(av); | |
830 | XSRETURN(count); | |
831 | } | |
832 | ||
b8fda935 | 833 | #endif /* USE_ATTRIBUTES_FOR_PERLIO */ |
2a1bc955 | 834 | |
e3f3bf95 NIS |
835 | SV * |
836 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 837 | { |
da51bb9b | 838 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 839 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 840 | return sv; |
e3f3bf95 NIS |
841 | } |
842 | ||
15eb3045 | 843 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 844 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 845 | { |
486ec47a | 846 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
847 | during loading of layers. |
848 | */ | |
849 | dXSARGS; | |
58c0efa5 | 850 | PERL_UNUSED_ARG(cv); |
e17bc05a TC |
851 | DEBUG_i( |
852 | if (items) | |
853 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))) ); | |
c9bca74a NIS |
854 | XSRETURN(0); |
855 | } | |
856 | ||
15eb3045 | 857 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 858 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 859 | { |
14a5cf38 | 860 | dXSARGS; |
58c0efa5 | 861 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
862 | if (items < 2) |
863 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
864 | else { | |
de009b76 | 865 | STRLEN len; |
46c461b5 | 866 | const char * const name = SvPV_const(ST(1), len); |
f814d560 | 867 | const bool load = (items > 2) ? SvTRUE_NN(ST(2)) : 0; |
46c461b5 | 868 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
869 | ST(0) = |
870 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
871 | &PL_sv_undef; | |
872 | XSRETURN(1); | |
873 | } | |
0c4f7ff0 NIS |
874 | } |
875 | ||
e3f3bf95 NIS |
876 | void |
877 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
878 | { | |
3a1ee7e8 NIS |
879 | if (!PL_known_layers) |
880 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 881 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
e17bc05a | 882 | DEBUG_i( PerlIO_debug("define %s %p\n", tab->name, (void*)tab) ); |
f3862f8b NIS |
883 | } |
884 | ||
1141d9f8 | 885 | int |
fcf2db38 | 886 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 887 | { |
14a5cf38 JH |
888 | if (names) { |
889 | const char *s = names; | |
890 | while (*s) { | |
891 | while (isSPACE(*s) || *s == ':') | |
892 | s++; | |
893 | if (*s) { | |
894 | STRLEN llen = 0; | |
895 | const char *e = s; | |
bd61b366 | 896 | const char *as = NULL; |
14a5cf38 JH |
897 | STRLEN alen = 0; |
898 | if (!isIDFIRST(*s)) { | |
899 | /* | |
900 | * Message is consistent with how attribute lists are | |
901 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 902 | * seen as an invalid separator character. |
14a5cf38 | 903 | */ |
de009b76 | 904 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
905 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
906 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
907 | q, *s, q, s); | |
93189314 | 908 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
909 | return -1; |
910 | } | |
911 | do { | |
912 | e++; | |
0eb30aeb | 913 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
914 | llen = e - s; |
915 | if (*e == '(') { | |
916 | int nesting = 1; | |
917 | as = ++e; | |
918 | while (nesting) { | |
919 | switch (*e++) { | |
920 | case ')': | |
921 | if (--nesting == 0) | |
922 | alen = (e - 1) - as; | |
923 | break; | |
924 | case '(': | |
925 | ++nesting; | |
926 | break; | |
927 | case '\\': | |
928 | /* | |
929 | * It's a nul terminated string, not allowed | |
930 | * to \ the terminating null. Anything other | |
71200d45 | 931 | * character is passed over. |
14a5cf38 JH |
932 | */ |
933 | if (*e++) { | |
934 | break; | |
935 | } | |
936 | /* | |
71200d45 | 937 | * Drop through |
14a5cf38 JH |
938 | */ |
939 | case '\0': | |
940 | e--; | |
a2a5de95 NC |
941 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
942 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
943 | (int) (e - s), s); | |
14a5cf38 JH |
944 | return -1; |
945 | default: | |
946 | /* | |
71200d45 | 947 | * boring. |
14a5cf38 JH |
948 | */ |
949 | break; | |
950 | } | |
951 | } | |
952 | } | |
953 | if (e > s) { | |
46c461b5 | 954 | PerlIO_funcs * const layer = |
14a5cf38 JH |
955 | PerlIO_find_layer(aTHX_ s, llen, 1); |
956 | if (layer) { | |
a951d81d BL |
957 | SV *arg = NULL; |
958 | if (as) | |
959 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 960 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 961 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 962 | SvREFCNT_dec(arg); |
14a5cf38 JH |
963 | } |
964 | else { | |
a2a5de95 NC |
965 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
966 | (int) llen, s); | |
14a5cf38 JH |
967 | return -1; |
968 | } | |
969 | } | |
970 | s = e; | |
971 | } | |
972 | } | |
973 | } | |
974 | return 0; | |
1141d9f8 NIS |
975 | } |
976 | ||
dfebf958 | 977 | void |
fcf2db38 | 978 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 979 | { |
27da23d5 | 980 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 981 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 982 | tab = &PerlIO_crlf; |
846be114 | 983 | #else |
6ce75a77 | 984 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 985 | tab = &PerlIO_stdio; |
846be114 | 986 | #endif |
e17bc05a | 987 | DEBUG_i( PerlIO_debug("Pushing %s\n", tab->name) ); |
0987d6f3 | 988 | PerlIO_list_push(aTHX_ av, (PerlIO_funcs *)tab, &PL_sv_undef); |
dfebf958 NIS |
989 | } |
990 | ||
e3f3bf95 | 991 | SV * |
14a5cf38 | 992 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 993 | { |
14a5cf38 | 994 | return av->array[n].arg; |
e3f3bf95 NIS |
995 | } |
996 | ||
f3862f8b | 997 | PerlIO_funcs * |
14a5cf38 | 998 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 999 | { |
14a5cf38 | 1000 | if (n >= 0 && n < av->cur) { |
e17bc05a TC |
1001 | DEBUG_i( PerlIO_debug("Layer %" IVdf " is %s\n", n, |
1002 | av->array[n].funcs->name) ); | |
14a5cf38 JH |
1003 | return av->array[n].funcs; |
1004 | } | |
1005 | if (!def) | |
1006 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1007 | return def; | |
e3f3bf95 NIS |
1008 | } |
1009 | ||
4ec2216f NIS |
1010 | IV |
1011 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1012 | { | |
8772537c AL |
1013 | PERL_UNUSED_ARG(mode); |
1014 | PERL_UNUSED_ARG(arg); | |
1015 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1016 | if (PerlIOValid(f)) { |
1017 | PerlIO_flush(f); | |
1018 | PerlIO_pop(aTHX_ f); | |
1019 | return 0; | |
1020 | } | |
1021 | return -1; | |
1022 | } | |
1023 | ||
27da23d5 | 1024 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1025 | sizeof(PerlIO_funcs), |
1026 | "pop", | |
1027 | 0, | |
1028 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1029 | PerlIOPop_pushed, | |
1030 | NULL, | |
c0888ace | 1031 | PerlIOBase_open, |
4ec2216f NIS |
1032 | NULL, |
1033 | NULL, | |
1034 | NULL, | |
1035 | NULL, | |
1036 | NULL, | |
1037 | NULL, | |
1038 | NULL, | |
1039 | NULL, | |
de009b76 AL |
1040 | NULL, |
1041 | NULL, | |
4ec2216f NIS |
1042 | NULL, /* flush */ |
1043 | NULL, /* fill */ | |
1044 | NULL, | |
1045 | NULL, | |
1046 | NULL, | |
1047 | NULL, | |
1048 | NULL, /* get_base */ | |
1049 | NULL, /* get_bufsiz */ | |
1050 | NULL, /* get_ptr */ | |
1051 | NULL, /* get_cnt */ | |
1052 | NULL, /* set_ptrcnt */ | |
1053 | }; | |
1054 | ||
fcf2db38 | 1055 | PerlIO_list_t * |
e3f3bf95 NIS |
1056 | PerlIO_default_layers(pTHX) |
1057 | { | |
3a1ee7e8 | 1058 | if (!PL_def_layerlist) { |
284167a5 | 1059 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1060 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1061 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1062 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1063 | #if defined(WIN32) |
27da23d5 | 1064 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1065 | #if 0 |
14a5cf38 | 1066 | osLayer = &PerlIO_win32; |
0c4128ad | 1067 | #endif |
2f8118af | 1068 | #endif |
27da23d5 JH |
1069 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1070 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1071 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1072 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1073 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1074 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1075 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
0987d6f3 TC |
1076 | PerlIO_list_push(aTHX_ PL_def_layerlist, (PerlIO_funcs *)osLayer, |
1077 | &PL_sv_undef); | |
14a5cf38 | 1078 | if (s) { |
3a1ee7e8 | 1079 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1080 | } |
1081 | else { | |
3a1ee7e8 | 1082 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1083 | } |
1141d9f8 | 1084 | } |
3a1ee7e8 NIS |
1085 | if (PL_def_layerlist->cur < 2) { |
1086 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1087 | } |
3a1ee7e8 | 1088 | return PL_def_layerlist; |
e3f3bf95 NIS |
1089 | } |
1090 | ||
0c4f7ff0 NIS |
1091 | void |
1092 | Perl_boot_core_PerlIO(pTHX) | |
1093 | { | |
1094 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1095 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1096 | __FILE__); | |
0c4f7ff0 | 1097 | #endif |
14a5cf38 | 1098 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1099 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1100 | } |
e3f3bf95 NIS |
1101 | |
1102 | PerlIO_funcs * | |
1103 | PerlIO_default_layer(pTHX_ I32 n) | |
1104 | { | |
46c461b5 | 1105 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1106 | if (n < 0) |
1107 | n += av->cur; | |
27da23d5 | 1108 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1109 | } |
1110 | ||
a999f61b NIS |
1111 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1112 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1113 | |
1114 | void | |
1141d9f8 | 1115 | PerlIO_stdstreams(pTHX) |
60382766 | 1116 | { |
a1ea730d | 1117 | if (!PL_perlio) { |
8995e67d | 1118 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1119 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1120 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1121 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1122 | } | |
60382766 NIS |
1123 | } |
1124 | ||
1125 | PerlIO * | |
27da23d5 | 1126 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1127 | { |
16865ff7 | 1128 | VERIFY_HEAD(f); |
2dc2558e | 1129 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1130 | Perl_croak( aTHX_ |
5cf96513 RB |
1131 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1132 | "PerlIO layer function table size", (UV)tab->fsize, | |
1133 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1134 | } |
1135 | if (tab->size) { | |
b464bac0 | 1136 | PerlIOl *l; |
2dc2558e | 1137 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1138 | Perl_croak( aTHX_ |
5cf96513 RB |
1139 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1140 | "PerlIO layer instance size", (UV)tab->size, | |
1141 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1142 | } |
1143 | /* Real layer with a data area */ | |
002e75cf JH |
1144 | if (f) { |
1145 | char *temp; | |
1146 | Newxz(temp, tab->size, char); | |
1147 | l = (PerlIOl*)temp; | |
1148 | if (l) { | |
1149 | l->next = *f; | |
1150 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1151 | l->head = ((PerlIOl*)f)->head; |
002e75cf | 1152 | *f = l; |
e17bc05a TC |
1153 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", |
1154 | (void*)f, tab->name, | |
1155 | (mode) ? mode : "(Null)", (void*)arg) ); | |
002e75cf JH |
1156 | if (*l->tab->Pushed && |
1157 | (*l->tab->Pushed) | |
1158 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1159 | PerlIO_pop(aTHX_ f); | |
1160 | return NULL; | |
1161 | } | |
2dc2558e | 1162 | } |
002e75cf JH |
1163 | else |
1164 | return NULL; | |
2dc2558e NIS |
1165 | } |
1166 | } | |
1167 | else if (f) { | |
1168 | /* Pseudo-layer where push does its own stack adjust */ | |
e17bc05a TC |
1169 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1170 | (mode) ? mode : "(Null)", (void*)arg) ); | |
210e727c | 1171 | if (tab->Pushed && |
27da23d5 | 1172 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1173 | return NULL; |
14a5cf38 JH |
1174 | } |
1175 | } | |
1176 | return f; | |
60382766 NIS |
1177 | } |
1178 | ||
81fe74fb LT |
1179 | PerlIO * |
1180 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1181 | IV n, const char *mode, int fd, int imode, int perm, | |
1182 | PerlIO *old, int narg, SV **args) | |
1183 | { | |
1184 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1185 | if (tab && tab->Open) { | |
1186 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1187 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1188 | PerlIO_close(ret); |
1189 | return NULL; | |
1190 | } | |
1191 | return ret; | |
1192 | } | |
1193 | SETERRNO(EINVAL, LIB_INVARG); | |
1194 | return NULL; | |
1195 | } | |
1196 | ||
dfebf958 | 1197 | IV |
86e05cf2 NIS |
1198 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1199 | { | |
1200 | if (PerlIOValid(f)) { | |
1201 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1202 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1203 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1204 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1205 | } | |
1206 | else { | |
1207 | /* Not suitable - pop it */ | |
1208 | PerlIO_pop(aTHX_ f); | |
1209 | } | |
1210 | return 0; | |
1211 | } | |
1212 | return -1; | |
1213 | } | |
1214 | ||
1215 | IV | |
2dc2558e | 1216 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1217 | { |
8772537c AL |
1218 | PERL_UNUSED_ARG(mode); |
1219 | PERL_UNUSED_ARG(arg); | |
1220 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1221 | |
04892f78 | 1222 | if (PerlIOValid(f)) { |
86e05cf2 | 1223 | PerlIO *t; |
de009b76 | 1224 | const PerlIOl *l; |
14a5cf38 | 1225 | PerlIO_flush(f); |
86e05cf2 NIS |
1226 | /* |
1227 | * Strip all layers that are not suitable for a raw stream | |
1228 | */ | |
1229 | t = f; | |
1230 | while (t && (l = *t)) { | |
cc6623a8 | 1231 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1232 | /* Has a handler - normal case */ |
9d97e8b8 | 1233 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1234 | if (*t == l) { |
1235 | /* Layer still there - move down a layer */ | |
1236 | t = PerlIONext(t); | |
1237 | } | |
1238 | } | |
1239 | else { | |
1240 | return -1; | |
1241 | } | |
14a5cf38 JH |
1242 | } |
1243 | else { | |
86e05cf2 NIS |
1244 | /* No handler - pop it */ |
1245 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1246 | } |
1247 | } | |
86e05cf2 | 1248 | if (PerlIOValid(f)) { |
e17bc05a TC |
1249 | DEBUG_i( PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1250 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)") ); | |
86e05cf2 NIS |
1251 | return 0; |
1252 | } | |
14a5cf38 JH |
1253 | } |
1254 | return -1; | |
dfebf958 NIS |
1255 | } |
1256 | ||
ac27b0f5 | 1257 | int |
14a5cf38 | 1258 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1259 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1260 | { |
14a5cf38 JH |
1261 | int code = 0; |
1262 | while (n < max) { | |
8772537c | 1263 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1264 | if (tab) { |
1265 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1266 | code = -1; | |
1267 | break; | |
1268 | } | |
1269 | } | |
1270 | n++; | |
1271 | } | |
1272 | return code; | |
e3f3bf95 NIS |
1273 | } |
1274 | ||
1275 | int | |
ac27b0f5 NIS |
1276 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1277 | { | |
14a5cf38 | 1278 | int code = 0; |
da0fccaa DG |
1279 | ENTER; |
1280 | save_scalar(PL_errgv); | |
53f1b6d2 | 1281 | if (f && names) { |
8772537c | 1282 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1283 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1284 | if (code == 0) { | |
d9dac8cd | 1285 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1286 | } |
3a1ee7e8 | 1287 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1288 | } |
da0fccaa | 1289 | LEAVE; |
14a5cf38 | 1290 | return code; |
ac27b0f5 NIS |
1291 | } |
1292 | ||
f3862f8b | 1293 | |
60382766 | 1294 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1295 | /* |
71200d45 | 1296 | * Given the abstraction above the public API functions |
14a5cf38 | 1297 | */ |
60382766 NIS |
1298 | |
1299 | int | |
f5b9d040 | 1300 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1301 | { |
e17bc05a TC |
1302 | DEBUG_i( |
1303 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, | |
1304 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? | |
1305 | PerlIOBase(f)->tab->name : "(Null)", | |
1306 | iotype, mode, (names) ? names : "(Null)") ); | |
68b5363f | 1307 | |
03c0554d NIS |
1308 | if (names) { |
1309 | /* Do not flush etc. if (e.g.) switching encodings. | |
1310 | if a pushed layer knows it needs to flush lower layers | |
1311 | (for example :unix which is never going to call them) | |
1312 | it can do the flush when it is pushed. | |
1313 | */ | |
1314 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1315 | } | |
1316 | else { | |
86e05cf2 | 1317 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1318 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1319 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1320 | O_BINARY so we can look for it in mode. | |
1321 | */ | |
1322 | if (!(mode & O_BINARY)) { | |
1323 | /* Text mode */ | |
86e05cf2 NIS |
1324 | /* FIXME?: Looking down the layer stack seems wrong, |
1325 | but is a way of reaching past (say) an encoding layer | |
1326 | to flip CRLF-ness of the layer(s) below | |
1327 | */ | |
03c0554d NIS |
1328 | while (*f) { |
1329 | /* Perhaps we should turn on bottom-most aware layer | |
1330 | e.g. Ilya's idea that UNIX TTY could serve | |
1331 | */ | |
cc6623a8 DM |
1332 | if (PerlIOBase(f)->tab && |
1333 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1334 | { | |
03c0554d NIS |
1335 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1336 | /* Not in text mode - flush any pending stuff and flip it */ | |
1337 | PerlIO_flush(f); | |
1338 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1339 | } | |
1340 | /* Only need to turn it on in one layer so we are done */ | |
1341 | return TRUE; | |
ed53a2bb | 1342 | } |
03c0554d | 1343 | f = PerlIONext(f); |
14a5cf38 | 1344 | } |
03c0554d NIS |
1345 | /* Not finding a CRLF aware layer presumably means we are binary |
1346 | which is not what was requested - so we failed | |
1347 | We _could_ push :crlf layer but so could caller | |
1348 | */ | |
1349 | return FALSE; | |
14a5cf38 | 1350 | } |
6ce75a77 | 1351 | #endif |
86e05cf2 NIS |
1352 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1353 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1354 | */ |
a0714e2c | 1355 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1356 | } |
f5b9d040 NIS |
1357 | } |
1358 | ||
f5b9d040 | 1359 | int |
e87a358a | 1360 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1361 | { |
37725cdc | 1362 | if (PerlIOValid(f)) { |
46c461b5 | 1363 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1364 | if (tab && tab->Close) |
1365 | return (*tab->Close)(aTHX_ f); | |
1366 | else | |
1367 | return PerlIOBase_close(aTHX_ f); | |
1368 | } | |
14a5cf38 | 1369 | else { |
93189314 | 1370 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1371 | return -1; |
1372 | } | |
76ced9ad NIS |
1373 | } |
1374 | ||
b931b1d9 | 1375 | int |
e87a358a | 1376 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1377 | { |
de009b76 | 1378 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1379 | while (PerlIOValid(f)) { |
1380 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1381 | if (PerlIO_lockcnt(f)) |
1382 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1383 | f = PerlIONext(f); | |
f6c77cf1 | 1384 | } |
14a5cf38 | 1385 | return code; |
b931b1d9 NIS |
1386 | } |
1387 | ||
b931b1d9 | 1388 | int |
e87a358a | 1389 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1390 | { |
20b7effb | 1391 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1392 | } |
1393 | ||
1141d9f8 | 1394 | |
fcf2db38 | 1395 | static PerlIO_funcs * |
2edd7e44 NIS |
1396 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1397 | { | |
14a5cf38 | 1398 | /* |
71200d45 | 1399 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1400 | */ |
526fd1b4 | 1401 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1402 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1403 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1404 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1405 | if (!f) |
dcbac5bb | 1406 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1407 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1408 | return f; |
1409 | } | |
14a5cf38 JH |
1410 | |
1411 | /* | |
71200d45 | 1412 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1413 | */ |
1414 | switch (SvTYPE(sv)) { | |
1415 | case SVt_PVAV: | |
6a245ed1 | 1416 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1417 | case SVt_PVHV: |
6a245ed1 | 1418 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1419 | case SVt_PVCV: |
6a245ed1 | 1420 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1421 | case SVt_PVGV: |
6a245ed1 | 1422 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1423 | default: |
1424 | return NULL; | |
14a5cf38 | 1425 | } |
2edd7e44 NIS |
1426 | } |
1427 | ||
fcf2db38 | 1428 | PerlIO_list_t * |
14a5cf38 JH |
1429 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1430 | const char *mode, int narg, SV **args) | |
1431 | { | |
1432 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); | |
1433 | int incdef = 1; | |
a1ea730d | 1434 | if (!PL_perlio) |
14a5cf38 JH |
1435 | PerlIO_stdstreams(aTHX); |
1436 | if (narg) { | |
dcda55fc | 1437 | SV * const arg = *args; |
14a5cf38 | 1438 | /* |
71200d45 NIS |
1439 | * If it is a reference but not an object see if we have a handler |
1440 | * for it | |
14a5cf38 | 1441 | */ |
4e0ef342 | 1442 | if (SvROK(arg) && !SvOBJECT(SvRV(arg))) { |
46c461b5 | 1443 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1444 | if (handler) { |
3a1ee7e8 NIS |
1445 | def = PerlIO_list_alloc(aTHX); |
1446 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1447 | incdef = 0; |
1448 | } | |
1449 | /* | |
e934609f | 1450 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1451 | * something sensible else we will just stringfy and open |
71200d45 | 1452 | * resulting string. |
14a5cf38 JH |
1453 | */ |
1454 | } | |
1455 | } | |
9fe371da | 1456 | if (!layers || !*layers) |
11bcd5da | 1457 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1458 | if (layers && *layers) { |
1459 | PerlIO_list_t *av; | |
1460 | if (incdef) { | |
a951d81d | 1461 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1462 | } |
1463 | else { | |
1464 | av = def; | |
1465 | } | |
0cff2cf3 NIS |
1466 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1467 | return av; | |
1468 | } | |
1469 | else { | |
1470 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1471 | return NULL; |
0cff2cf3 | 1472 | } |
14a5cf38 JH |
1473 | } |
1474 | else { | |
1475 | if (incdef) | |
1476 | def->refcnt++; | |
1477 | return def; | |
1478 | } | |
ee518936 NIS |
1479 | } |
1480 | ||
1481 | PerlIO * | |
14a5cf38 JH |
1482 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1483 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1484 | { | |
1485 | if (!f && narg == 1 && *args == &PL_sv_undef) { | |
1486 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1487 | if (!layers || !*layers) |
11bcd5da | 1488 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1489 | if (layers && *layers) |
1490 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1491 | } | |
1492 | } | |
1493 | else { | |
de009b76 | 1494 | PerlIO_list_t *layera; |
14a5cf38 JH |
1495 | IV n; |
1496 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1497 | if (PerlIOValid(f)) { |
14a5cf38 | 1498 | /* |
71200d45 NIS |
1499 | * This is "reopen" - it is not tested as perl does not use it |
1500 | * yet | |
14a5cf38 JH |
1501 | */ |
1502 | PerlIOl *l = *f; | |
3a1ee7e8 | 1503 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1504 | while (l) { |
a951d81d | 1505 | SV *arg = NULL; |
cc6623a8 | 1506 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1507 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1508 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1509 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1510 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1511 | l = *PerlIONext(&l); |
1512 | } | |
1513 | } | |
1514 | else { | |
1515 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1516 | if (!layera) { |
1517 | return NULL; | |
1518 | } | |
14a5cf38 JH |
1519 | } |
1520 | /* | |
71200d45 | 1521 | * Start at "top" of layer stack |
14a5cf38 JH |
1522 | */ |
1523 | n = layera->cur - 1; | |
1524 | while (n >= 0) { | |
46c461b5 | 1525 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1526 | if (t && t->Open) { |
1527 | tab = t; | |
1528 | break; | |
1529 | } | |
1530 | n--; | |
1531 | } | |
1532 | if (tab) { | |
1533 | /* | |
71200d45 | 1534 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1535 | */ |
7cf31beb | 1536 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1537 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1538 | } |
e17bc05a TC |
1539 | DEBUG_i( PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
1540 | tab->name, layers ? layers : "(Null)", mode, fd, | |
1541 | imode, perm, (void*)f, narg, (void*)args) ); | |
210e727c JH |
1542 | if (tab->Open) |
1543 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1544 | f, narg, args); | |
1545 | else { | |
1546 | SETERRNO(EINVAL, LIB_INVARG); | |
1547 | f = NULL; | |
1548 | } | |
14a5cf38 JH |
1549 | if (f) { |
1550 | if (n + 1 < layera->cur) { | |
1551 | /* | |
1552 | * More layers above the one that we used to open - | |
71200d45 | 1553 | * apply them now |
14a5cf38 | 1554 | */ |
d9dac8cd NIS |
1555 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1556 | /* If pushing layers fails close the file */ | |
1557 | PerlIO_close(f); | |
14a5cf38 JH |
1558 | f = NULL; |
1559 | } | |
1560 | } | |
1561 | } | |
1562 | } | |
3a1ee7e8 | 1563 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1564 | } |
1565 | return f; | |
ee518936 | 1566 | } |
b931b1d9 NIS |
1567 | |
1568 | ||
9e353e3b | 1569 | SSize_t |
e87a358a | 1570 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1571 | { |
7918f24d NC |
1572 | PERL_ARGS_ASSERT_PERLIO_READ; |
1573 | ||
b32dd47e | 1574 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1575 | } |
1576 | ||
313ca112 | 1577 | SSize_t |
e87a358a | 1578 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1579 | { |
7918f24d NC |
1580 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1581 | ||
b32dd47e | 1582 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1583 | } |
1584 | ||
9e353e3b | 1585 | SSize_t |
e87a358a | 1586 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1587 | { |
7918f24d NC |
1588 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1589 | ||
b32dd47e | 1590 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1591 | } |
1592 | ||
6f9d8c32 | 1593 | int |
e87a358a | 1594 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1595 | { |
b32dd47e | 1596 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1597 | } |
1598 | ||
9e353e3b | 1599 | Off_t |
e87a358a | 1600 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1601 | { |
b32dd47e | 1602 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1603 | } |
1604 | ||
6f9d8c32 | 1605 | int |
e87a358a | 1606 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1607 | { |
14a5cf38 JH |
1608 | if (f) { |
1609 | if (*f) { | |
de009b76 | 1610 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1611 | |
1612 | if (tab && tab->Flush) | |
f62ce20a | 1613 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1614 | else |
1615 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1616 | } |
1617 | else { | |
e17bc05a | 1618 | DEBUG_i( PerlIO_debug("Cannot flush f=%p\n", (void*)f) ); |
93189314 | 1619 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1620 | return -1; |
1621 | } | |
1622 | } | |
1623 | else { | |
1624 | /* | |
1625 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1626 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1627 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1628 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1629 | * decisions? --jhi |
14a5cf38 | 1630 | */ |
303f2dc3 DM |
1631 | PerlIOl **table = &PL_perlio; |
1632 | PerlIOl *ff; | |
14a5cf38 | 1633 | int code = 0; |
303f2dc3 | 1634 | while ((ff = *table)) { |
14a5cf38 | 1635 | int i; |
303f2dc3 | 1636 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1637 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1638 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1639 | code = -1; |
303f2dc3 | 1640 | ff++; |
14a5cf38 JH |
1641 | } |
1642 | } | |
1643 | return code; | |
1644 | } | |
760ac839 LW |
1645 | } |
1646 | ||
a9c883f6 | 1647 | void |
f62ce20a | 1648 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1649 | { |
303f2dc3 DM |
1650 | PerlIOl **table = &PL_perlio; |
1651 | PerlIOl *f; | |
14a5cf38 JH |
1652 | while ((f = *table)) { |
1653 | int i; | |
303f2dc3 | 1654 | table = (PerlIOl **) (f++); |
14a5cf38 | 1655 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1656 | if (f->next |
1657 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1658 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1659 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1660 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1661 | f++; |
1662 | } | |
a9c883f6 | 1663 | } |
a9c883f6 NIS |
1664 | } |
1665 | ||
06da4f11 | 1666 | int |
e87a358a | 1667 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1668 | { |
b32dd47e | 1669 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1670 | } |
1671 | ||
f3862f8b NIS |
1672 | int |
1673 | PerlIO_isutf8(PerlIO *f) | |
1674 | { | |
1b7a0411 JH |
1675 | if (PerlIOValid(f)) |
1676 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1677 | else | |
1678 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1679 | |
1b7a0411 | 1680 | return -1; |
f3862f8b NIS |
1681 | } |
1682 | ||
6f9d8c32 | 1683 | int |
e87a358a | 1684 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1685 | { |
b32dd47e | 1686 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1687 | } |
1688 | ||
9e353e3b | 1689 | int |
e87a358a | 1690 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1691 | { |
b32dd47e | 1692 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1693 | } |
1694 | ||
9e353e3b | 1695 | void |
e87a358a | 1696 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1697 | { |
b32dd47e | 1698 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1699 | } |
1700 | ||
9e353e3b | 1701 | void |
e87a358a | 1702 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1703 | { |
b32dd47e | 1704 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1705 | } |
1706 | ||
9e353e3b NIS |
1707 | int |
1708 | PerlIO_has_base(PerlIO *f) | |
1709 | { | |
1b7a0411 | 1710 | if (PerlIOValid(f)) { |
46c461b5 | 1711 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1712 | |
1713 | if (tab) | |
1714 | return (tab->Get_base != NULL); | |
1b7a0411 | 1715 | } |
1b7a0411 JH |
1716 | |
1717 | return 0; | |
760ac839 LW |
1718 | } |
1719 | ||
9e353e3b NIS |
1720 | int |
1721 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1722 | { |
d7dfc388 SK |
1723 | if (PerlIOValid(f)) { |
1724 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1725 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1726 | |
d7dfc388 SK |
1727 | if (tab) |
1728 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1729 | } |
14a5cf38 | 1730 | } |
1b7a0411 | 1731 | |
14a5cf38 | 1732 | return 0; |
9e353e3b NIS |
1733 | } |
1734 | ||
9e353e3b NIS |
1735 | int |
1736 | PerlIO_has_cntptr(PerlIO *f) | |
1737 | { | |
04892f78 | 1738 | if (PerlIOValid(f)) { |
46c461b5 | 1739 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1740 | |
1741 | if (tab) | |
1742 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1743 | } |
1b7a0411 | 1744 | |
14a5cf38 | 1745 | return 0; |
9e353e3b NIS |
1746 | } |
1747 | ||
9e353e3b NIS |
1748 | int |
1749 | PerlIO_canset_cnt(PerlIO *f) | |
1750 | { | |
04892f78 | 1751 | if (PerlIOValid(f)) { |
46c461b5 | 1752 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1753 | |
1754 | if (tab) | |
1755 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1756 | } |
1b7a0411 | 1757 | |
14a5cf38 | 1758 | return 0; |
760ac839 LW |
1759 | } |
1760 | ||
888911fc | 1761 | STDCHAR * |
e87a358a | 1762 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1763 | { |
b32dd47e | 1764 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1765 | } |
1766 | ||
b66f3475 | 1767 | SSize_t |
e87a358a | 1768 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1769 | { |
b66f3475 | 1770 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1771 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1772 | } |
1773 | ||
9e353e3b | 1774 | STDCHAR * |
e87a358a | 1775 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1776 | { |
b32dd47e | 1777 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1778 | } |
1779 | ||
b66f3475 | 1780 | SSize_t |
e87a358a | 1781 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1782 | { |
b32dd47e | 1783 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1784 | } |
1785 | ||
9e353e3b | 1786 | void |
b66f3475 | 1787 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1788 | { |
b32dd47e | 1789 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1790 | } |
1791 | ||
9e353e3b | 1792 | void |
b66f3475 | 1793 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1794 | { |
b32dd47e | 1795 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1796 | } |
1797 | ||
4ec2216f | 1798 | |
9e353e3b | 1799 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1800 | /* |
71200d45 | 1801 | * utf8 and raw dummy layers |
14a5cf38 | 1802 | */ |
dfebf958 | 1803 | |
26fb694e | 1804 | IV |
2dc2558e | 1805 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1806 | { |
96a5add6 | 1807 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1808 | PERL_UNUSED_ARG(mode); |
1809 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1810 | if (PerlIOValid(f)) { |
cc6623a8 | 1811 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1812 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1813 | else | |
1814 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1815 | return 0; | |
1816 | } | |
1817 | return -1; | |
26fb694e NIS |
1818 | } |
1819 | ||
27da23d5 | 1820 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1821 | sizeof(PerlIO_funcs), |
14a5cf38 | 1822 | "utf8", |
2dc2558e | 1823 | 0, |
a778d1f5 | 1824 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1825 | PerlIOUtf8_pushed, |
1826 | NULL, | |
c0888ace | 1827 | PerlIOBase_open, |
14a5cf38 JH |
1828 | NULL, |
1829 | NULL, | |
1830 | NULL, | |
1831 | NULL, | |
1832 | NULL, | |
1833 | NULL, | |
1834 | NULL, | |
1835 | NULL, | |
de009b76 AL |
1836 | NULL, |
1837 | NULL, | |
22569500 NIS |
1838 | NULL, /* flush */ |
1839 | NULL, /* fill */ | |
14a5cf38 JH |
1840 | NULL, |
1841 | NULL, | |
1842 | NULL, | |
1843 | NULL, | |
22569500 NIS |
1844 | NULL, /* get_base */ |
1845 | NULL, /* get_bufsiz */ | |
1846 | NULL, /* get_ptr */ | |
1847 | NULL, /* get_cnt */ | |
1848 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1849 | }; |
1850 | ||
27da23d5 | 1851 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1852 | sizeof(PerlIO_funcs), |
14a5cf38 | 1853 | "bytes", |
2dc2558e | 1854 | 0, |
a778d1f5 | 1855 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1856 | PerlIOUtf8_pushed, |
1857 | NULL, | |
c0888ace | 1858 | PerlIOBase_open, |
14a5cf38 JH |
1859 | NULL, |
1860 | NULL, | |
1861 | NULL, | |
1862 | NULL, | |
1863 | NULL, | |
1864 | NULL, | |
1865 | NULL, | |
1866 | NULL, | |
de009b76 AL |
1867 | NULL, |
1868 | NULL, | |
22569500 NIS |
1869 | NULL, /* flush */ |
1870 | NULL, /* fill */ | |
14a5cf38 JH |
1871 | NULL, |
1872 | NULL, | |
1873 | NULL, | |
1874 | NULL, | |
22569500 NIS |
1875 | NULL, /* get_base */ |
1876 | NULL, /* get_bufsiz */ | |
1877 | NULL, /* get_ptr */ | |
1878 | NULL, /* get_cnt */ | |
1879 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1880 | }; |
1881 | ||
27da23d5 | 1882 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1883 | sizeof(PerlIO_funcs), |
14a5cf38 | 1884 | "raw", |
2dc2558e | 1885 | 0, |
14a5cf38 JH |
1886 | PERLIO_K_DUMMY, |
1887 | PerlIORaw_pushed, | |
1888 | PerlIOBase_popped, | |
ecfd0649 | 1889 | PerlIOBase_open, |
14a5cf38 JH |
1890 | NULL, |
1891 | NULL, | |
1892 | NULL, | |
1893 | NULL, | |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
de009b76 AL |
1898 | NULL, |
1899 | NULL, | |
22569500 NIS |
1900 | NULL, /* flush */ |
1901 | NULL, /* fill */ | |
14a5cf38 JH |
1902 | NULL, |
1903 | NULL, | |
1904 | NULL, | |
1905 | NULL, | |
22569500 NIS |
1906 | NULL, /* get_base */ |
1907 | NULL, /* get_bufsiz */ | |
1908 | NULL, /* get_ptr */ | |
1909 | NULL, /* get_cnt */ | |
1910 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1911 | }; |
1912 | /*--------------------------------------------------------------------------------------*/ | |
1913 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1914 | /* |
71200d45 | 1915 | * "Methods" of the "base class" |
14a5cf38 | 1916 | */ |
9e353e3b NIS |
1917 | |
1918 | IV | |
f62ce20a | 1919 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1920 | { |
04892f78 | 1921 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1922 | } |
1923 | ||
f5b9d040 | 1924 | char * |
81428673 | 1925 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1926 | { |
1927 | char *s = buf; | |
81428673 | 1928 | if (PerlIOValid(f)) { |
de009b76 | 1929 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1930 | if (flags & PERLIO_F_APPEND) { |
1931 | *s++ = 'a'; | |
1932 | if (flags & PERLIO_F_CANREAD) { | |
1933 | *s++ = '+'; | |
1934 | } | |
14a5cf38 | 1935 | } |
81428673 NIS |
1936 | else if (flags & PERLIO_F_CANREAD) { |
1937 | *s++ = 'r'; | |
1938 | if (flags & PERLIO_F_CANWRITE) | |
1939 | *s++ = '+'; | |
1940 | } | |
1941 | else if (flags & PERLIO_F_CANWRITE) { | |
1942 | *s++ = 'w'; | |
1943 | if (flags & PERLIO_F_CANREAD) { | |
1944 | *s++ = '+'; | |
1945 | } | |
14a5cf38 | 1946 | } |
35990314 | 1947 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1948 | if (!(flags & PERLIO_F_CRLF)) |
1949 | *s++ = 'b'; | |
5f1a76d0 | 1950 | #endif |
81428673 | 1951 | } |
14a5cf38 JH |
1952 | *s = '\0'; |
1953 | return buf; | |
f5b9d040 NIS |
1954 | } |
1955 | ||
81428673 | 1956 | |
76ced9ad | 1957 | IV |
2dc2558e | 1958 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1959 | { |
de009b76 | 1960 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1961 | PERL_UNUSED_CONTEXT; |
8772537c | 1962 | PERL_UNUSED_ARG(arg); |
de009b76 | 1963 | |
14a5cf38 JH |
1964 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1965 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 1966 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
1967 | l->flags |= PERLIO_F_FASTGETS; |
1968 | if (mode) { | |
3b6c1aba | 1969 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
1970 | mode++; |
1971 | switch (*mode++) { | |
1972 | case 'r': | |
1973 | l->flags |= PERLIO_F_CANREAD; | |
1974 | break; | |
1975 | case 'a': | |
1976 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
1977 | break; | |
1978 | case 'w': | |
1979 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
1980 | break; | |
1981 | default: | |
93189314 | 1982 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1983 | return -1; |
1984 | } | |
1985 | while (*mode) { | |
1986 | switch (*mode++) { | |
1987 | case '+': | |
1988 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
1989 | break; | |
1990 | case 'b': | |
1991 | l->flags &= ~PERLIO_F_CRLF; | |
1992 | break; | |
1993 | case 't': | |
1994 | l->flags |= PERLIO_F_CRLF; | |
1995 | break; | |
1996 | default: | |
93189314 | 1997 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1998 | return -1; |
1999 | } | |
2000 | } | |
2001 | } | |
2002 | else { | |
2003 | if (l->next) { | |
2004 | l->flags |= l->next->flags & | |
2005 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2006 | PERLIO_F_APPEND); | |
2007 | } | |
2008 | } | |
5e2ab84b | 2009 | #if 0 |
e17bc05a | 2010 | DEBUG_i( |
14a5cf38 | 2011 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2012 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2013 | l->flags, PerlIO_modestr(f, temp)); |
e17bc05a | 2014 | ); |
5e2ab84b | 2015 | #endif |
14a5cf38 | 2016 | return 0; |
76ced9ad NIS |
2017 | } |
2018 | ||
2019 | IV | |
f62ce20a | 2020 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2021 | { |
96a5add6 | 2022 | PERL_UNUSED_CONTEXT; |
8772537c | 2023 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2024 | return 0; |
760ac839 LW |
2025 | } |
2026 | ||
9e353e3b | 2027 | SSize_t |
f62ce20a | 2028 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2029 | { |
14a5cf38 | 2030 | /* |
71200d45 | 2031 | * Save the position as current head considers it |
14a5cf38 | 2032 | */ |
de009b76 | 2033 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2034 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2035 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2036 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2037 | } |
2038 | ||
f6c77cf1 | 2039 | SSize_t |
f62ce20a | 2040 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2041 | { |
14a5cf38 JH |
2042 | STDCHAR *buf = (STDCHAR *) vbuf; |
2043 | if (f) { | |
263df5f1 JH |
2044 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2045 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2046 | SETERRNO(EBADF, SS_IVCHAN); | |
0ea86a10 | 2047 | PerlIO_save_errno(f); |
263df5f1 JH |
2048 | return 0; |
2049 | } | |
14a5cf38 | 2050 | while (count > 0) { |
93c2c2ec IZ |
2051 | get_cnt: |
2052 | { | |
14a5cf38 JH |
2053 | SSize_t avail = PerlIO_get_cnt(f); |
2054 | SSize_t take = 0; | |
2055 | if (avail > 0) | |
94e529cc | 2056 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2057 | if (take > 0) { |
2058 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2059 | Copy(ptr, buf, take, STDCHAR); | |
2060 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2061 | count -= take; | |
2062 | buf += take; | |
93c2c2ec IZ |
2063 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2064 | goto get_cnt; | |
14a5cf38 JH |
2065 | } |
2066 | if (count > 0 && avail <= 0) { | |
2067 | if (PerlIO_fill(f) != 0) | |
2068 | break; | |
2069 | } | |
93c2c2ec | 2070 | } |
14a5cf38 JH |
2071 | } |
2072 | return (buf - (STDCHAR *) vbuf); | |
2073 | } | |
f6c77cf1 | 2074 | return 0; |
f6c77cf1 NIS |
2075 | } |
2076 | ||
9e353e3b | 2077 | IV |
f62ce20a | 2078 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2079 | { |
96a5add6 | 2080 | PERL_UNUSED_CONTEXT; |
8772537c | 2081 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2082 | return 0; |
9e353e3b NIS |
2083 | } |
2084 | ||
2085 | IV | |
f62ce20a | 2086 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2087 | { |
96a5add6 | 2088 | PERL_UNUSED_CONTEXT; |
8772537c | 2089 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2090 | return -1; |
06da4f11 NIS |
2091 | } |
2092 | ||
2093 | IV | |
f62ce20a | 2094 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2095 | { |
37725cdc NIS |
2096 | IV code = -1; |
2097 | if (PerlIOValid(f)) { | |
2098 | PerlIO *n = PerlIONext(f); | |
2099 | code = PerlIO_flush(f); | |
2100 | PerlIOBase(f)->flags &= | |
2101 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2102 | while (PerlIOValid(n)) { | |
de009b76 | 2103 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2104 | if (tab && tab->Close) { |
2105 | if ((*tab->Close)(aTHX_ n) != 0) | |
2106 | code = -1; | |
2107 | break; | |
2108 | } | |
2109 | else { | |
2110 | PerlIOBase(n)->flags &= | |
2111 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2112 | } | |
2113 | n = PerlIONext(n); | |
2114 | } | |
2115 | } | |
2116 | else { | |
2117 | SETERRNO(EBADF, SS_IVCHAN); | |
2118 | } | |
14a5cf38 | 2119 | return code; |
9e353e3b NIS |
2120 | } |
2121 | ||
2122 | IV | |
f62ce20a | 2123 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2124 | { |
96a5add6 | 2125 | PERL_UNUSED_CONTEXT; |
04892f78 | 2126 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2127 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2128 | } | |
2129 | return 1; | |
9e353e3b NIS |
2130 | } |
2131 | ||
2132 | IV | |
f62ce20a | 2133 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2134 | { |
96a5add6 | 2135 | PERL_UNUSED_CONTEXT; |
04892f78 | 2136 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2137 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2138 | } | |
2139 | return 1; | |
9e353e3b NIS |
2140 | } |
2141 | ||
2142 | void | |
f62ce20a | 2143 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2144 | { |
04892f78 | 2145 | if (PerlIOValid(f)) { |
dcda55fc | 2146 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2147 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2148 | if (PerlIOValid(n)) |
14a5cf38 JH |
2149 | PerlIO_clearerr(n); |
2150 | } | |
9e353e3b NIS |
2151 | } |
2152 | ||
2153 | void | |
f62ce20a | 2154 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2155 | { |
96a5add6 | 2156 | PERL_UNUSED_CONTEXT; |
04892f78 | 2157 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2158 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2159 | } | |
9e353e3b NIS |
2160 | } |
2161 | ||
93a8090d NIS |
2162 | SV * |
2163 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2164 | { | |
2165 | if (!arg) | |
a0714e2c | 2166 | return NULL; |
24d147a6 | 2167 | #ifdef USE_ITHREADS |
93a8090d | 2168 | if (param) { |
a951d81d BL |
2169 | arg = sv_dup(arg, param); |
2170 | SvREFCNT_inc_simple_void_NN(arg); | |
2171 | return arg; | |
93a8090d NIS |
2172 | } |
2173 | else { | |
2174 | return newSVsv(arg); | |
2175 | } | |
2176 | #else | |
1b6737cc | 2177 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2178 | return newSVsv(arg); |
2179 | #endif | |
2180 | } | |
2181 | ||
2182 | PerlIO * | |
ecdeb87c | 2183 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2184 | { |
1b6737cc | 2185 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2186 | if (PerlIOValid(nexto)) { |
de009b76 | 2187 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2188 | if (tab && tab->Dup) |
2189 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2190 | else | |
2191 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2192 | } |
2193 | if (f) { | |
dcda55fc | 2194 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2195 | SV *arg = NULL; |
93a8090d | 2196 | char buf[8]; |
316ebaf2 | 2197 | assert(self); |
e17bc05a TC |
2198 | DEBUG_i(PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2199 | self->name, | |
2200 | (void*)f, (void*)o, (void*)param) ); | |
27e6dabe JH |
2201 | if (self->Getarg) |
2202 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2203 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2204 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2205 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2206 | SvREFCNT_dec(arg); |
93a8090d NIS |
2207 | } |
2208 | return f; | |
2209 | } | |
2210 | ||
27da23d5 | 2211 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2212 | |
8b84d7dd | 2213 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 | 2214 | static void |
ff25d7bc JH |
2215 | S_more_refcounted_fds(pTHX_ const int new_fd) |
2216 | PERL_TSA_REQUIRES(PL_perlio_mutex) | |
2217 | { | |
7a89be66 | 2218 | dVAR; |
22c96fc1 | 2219 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2220 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2221 | int *new_array; |
2222 | ||
dd791c72 JH |
2223 | #ifndef PERL_IMPLICIT_SYS |
2224 | PERL_UNUSED_CONTEXT; | |
2225 | #endif | |
2226 | ||
e17bc05a TC |
2227 | DEBUG_i( PerlIO_debug("More fds - old=%d, need %d, new=%d\n", |
2228 | old_max, new_fd, new_max) ); | |
22c96fc1 NC |
2229 | |
2230 | if (new_fd < old_max) { | |
2231 | return; | |
2232 | } | |
2233 | ||
f4ae5be6 NC |
2234 | assert (new_max > new_fd); |
2235 | ||
eae082a0 JH |
2236 | /* Use plain realloc() since we need this memory to be really |
2237 | * global and visible to all the interpreters and/or threads. */ | |
2238 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2239 | |
2240 | if (!new_array) { | |
8b84d7dd | 2241 | #ifdef USE_ITHREADS |
6cb8cb21 | 2242 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2243 | #endif |
4cbe3a7d | 2244 | croak_no_mem(); |
22c96fc1 NC |
2245 | } |
2246 | ||
2247 | PL_perlio_fd_refcnt_size = new_max; | |
2248 | PL_perlio_fd_refcnt = new_array; | |
2249 | ||
e17bc05a TC |
2250 | DEBUG_i( PerlIO_debug("Zeroing %p, %d\n", |
2251 | (void*)(new_array + old_max), | |
2252 | new_max - old_max) ); | |
22c96fc1 NC |
2253 | |
2254 | Zero(new_array + old_max, new_max - old_max, int); | |
2255 | } | |
2256 | ||
2257 | ||
93a8090d NIS |
2258 | void |
2259 | PerlIO_init(pTHX) | |
2260 | { | |
8b84d7dd | 2261 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2262 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2263 | } |
2264 | ||
168d5872 NIS |
2265 | void |
2266 | PerlIOUnix_refcnt_inc(int fd) | |
2267 | { | |
27da23d5 | 2268 | dTHX; |
22c96fc1 | 2269 | if (fd >= 0) { |
97aff369 | 2270 | dVAR; |
22c96fc1 | 2271 | |
8b84d7dd | 2272 | #ifdef USE_ITHREADS |
6cb8cb21 | 2273 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2274 | #endif |
22c96fc1 NC |
2275 | if (fd >= PL_perlio_fd_refcnt_size) |
2276 | S_more_refcounted_fds(aTHX_ fd); | |
2277 | ||
27da23d5 | 2278 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2279 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2280 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2281 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2282 | fd, PL_perlio_fd_refcnt[fd]); | |
2283 | } | |
e17bc05a TC |
2284 | DEBUG_i( PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", |
2285 | fd, PL_perlio_fd_refcnt[fd]) ); | |
22c96fc1 | 2286 | |
8b84d7dd | 2287 | #ifdef USE_ITHREADS |
6cb8cb21 | 2288 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2289 | #endif |
8b84d7dd | 2290 | } else { |
12605ff9 | 2291 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2292 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2293 | } |
2294 | } | |
2295 | ||
168d5872 NIS |
2296 | int |
2297 | PerlIOUnix_refcnt_dec(int fd) | |
2298 | { | |
2299 | int cnt = 0; | |
22c96fc1 | 2300 | if (fd >= 0) { |
e17bc05a TC |
2301 | #ifdef DEBUGGING |
2302 | dTHX; | |
2303 | #else | |
97aff369 | 2304 | dVAR; |
e17bc05a | 2305 | #endif |
8b84d7dd | 2306 | #ifdef USE_ITHREADS |
6cb8cb21 | 2307 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2308 | #endif |
8b84d7dd | 2309 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2310 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2311 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2312 | fd, PL_perlio_fd_refcnt_size); |
2313 | } | |
2314 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2315 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2316 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2317 | fd, PL_perlio_fd_refcnt[fd]); |
2318 | } | |
27da23d5 | 2319 | cnt = --PL_perlio_fd_refcnt[fd]; |
e17bc05a | 2320 | DEBUG_i( PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt) ); |
8b84d7dd | 2321 | #ifdef USE_ITHREADS |
6cb8cb21 | 2322 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2323 | #endif |
8b84d7dd | 2324 | } else { |
12605ff9 | 2325 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2326 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2327 | } |
2328 | return cnt; | |
2329 | } | |
2330 | ||
2e0cfa16 FC |
2331 | int |
2332 | PerlIOUnix_refcnt(int fd) | |
2333 | { | |
2334 | dTHX; | |
2335 | int cnt = 0; | |
2336 | if (fd >= 0) { | |
2337 | dVAR; | |
2338 | #ifdef USE_ITHREADS | |
2339 | MUTEX_LOCK(&PL_perlio_mutex); | |
2340 | #endif | |
2341 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2342 | /* diag_listed_as: refcnt: fd %d%s */ | |
2343 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2344 | fd, PL_perlio_fd_refcnt_size); | |
2345 | } | |
2346 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2347 | /* diag_listed_as: refcnt: fd %d%s */ | |
2348 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2349 | fd, PL_perlio_fd_refcnt[fd]); | |
2350 | } | |
2351 | cnt = PL_perlio_fd_refcnt[fd]; | |
2352 | #ifdef USE_ITHREADS | |
2353 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2354 | #endif | |
2355 | } else { | |
2356 | /* diag_listed_as: refcnt: fd %d%s */ | |
2357 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2358 | } | |
2359 | return cnt; | |
2360 | } | |
2361 | ||
694c95cf JH |
2362 | void |
2363 | PerlIO_cleanup(pTHX) | |
2364 | { | |
2365 | int i; | |
2366 | #ifdef USE_ITHREADS | |
e17bc05a | 2367 | DEBUG_i( PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX) ); |
9f4bd222 | 2368 | #else |
e17bc05a | 2369 | DEBUG_i( PerlIO_debug("Cleanup layers\n") ); |
694c95cf | 2370 | #endif |
e47547a8 | 2371 | |
694c95cf JH |
2372 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2373 | for (i=0; i < 3; i++) | |
2374 | PerlIOUnix_refcnt_inc(i); | |
2375 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2376 | /* Restore STDIN..STDERR refcount */ | |
2377 | for (i=0; i < 3; i++) | |
2378 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2379 | |
2380 | if (PL_known_layers) { | |
2381 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2382 | PL_known_layers = NULL; | |
2383 | } | |
27da23d5 | 2384 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2385 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2386 | PL_def_layerlist = NULL; | |
2387 | } | |
6cb8cb21 RGS |
2388 | } |
2389 | ||
0934c9d9 | 2390 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2391 | { |
53d44271 | 2392 | dVAR; |
4f3da17a DM |
2393 | #if 0 |
2394 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2395 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2396 | being present (at least in win32) :-(. | |
2397 | Disable for now. | |
2398 | */ | |
6cb8cb21 RGS |
2399 | #ifdef DEBUGGING |
2400 | { | |
2401 | /* By now all filehandles should have been closed, so any | |
2402 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2403 | * errors. */ | |
77db880c JH |
2404 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2405 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2406 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2407 | int i; |
2408 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2409 | if (PL_perlio_fd_refcnt[i]) { |
2410 | const STRLEN len = | |
2411 | my_snprintf(buf, sizeof(buf), | |
2412 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2413 | i, PL_perlio_fd_refcnt[i]); | |
2414 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2415 | } | |
6cb8cb21 RGS |
2416 | } |
2417 | } | |
2418 | #endif | |
4f3da17a | 2419 | #endif |
eae082a0 JH |
2420 | /* Not bothering with PL_perlio_mutex since by now |
2421 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2422 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2423 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2424 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2425 | PL_perlio_fd_refcnt = NULL; |
2426 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2427 | } |
694c95cf JH |
2428 | } |
2429 | ||
9e353e3b | 2430 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2431 | /* |
71200d45 | 2432 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2433 | */ |
9e353e3b | 2434 | |
14a5cf38 | 2435 | typedef struct { |
22569500 NIS |
2436 | struct _PerlIO base; /* The generic part */ |
2437 | int fd; /* UNIX like file descriptor */ | |
2438 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2439 | } PerlIOUnix; |
2440 | ||
abf9167d DM |
2441 | static void |
2442 | S_lockcnt_dec(pTHX_ const void* f) | |
2443 | { | |
dd791c72 JH |
2444 | #ifndef PERL_IMPLICIT_SYS |
2445 | PERL_UNUSED_CONTEXT; | |
2446 | #endif | |
abf9167d DM |
2447 | PerlIO_lockcnt((PerlIO*)f)--; |
2448 | } | |
2449 | ||
2450 | ||
2451 | /* call the signal handler, and if that handler happens to clear | |
2452 | * this handle, free what we can and return true */ | |
2453 | ||
2454 | static bool | |
2455 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2456 | ENTER; | |
2457 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2458 | PerlIO_lockcnt(f)++; | |
2459 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2460 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2461 | LEAVE; | |
abf9167d | 2462 | return 0; |
be48bbe8 | 2463 | } |
abf9167d DM |
2464 | /* we've just run some perl-level code that could have done |
2465 | * anything, including closing the file or clearing this layer. | |
2466 | * If so, free any lower layers that have already been | |
2467 | * cleared, then return an error. */ | |
2468 | while (PerlIOValid(f) && | |
2469 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2470 | { | |
2471 | const PerlIOl *l = *f; | |
2472 | *f = l->next; | |
2473 | Safefree(l); | |
2474 | } | |
be48bbe8 | 2475 | LEAVE; |
abf9167d DM |
2476 | return 1; |
2477 | } | |
2478 | ||
6f9d8c32 | 2479 | int |
9e353e3b | 2480 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2481 | { |
14a5cf38 | 2482 | int oflags = -1; |
3b6c1aba | 2483 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2484 | mode++; |
2485 | switch (*mode) { | |
2486 | case 'r': | |
2487 | oflags = O_RDONLY; | |
2488 | if (*++mode == '+') { | |
2489 | oflags = O_RDWR; | |
2490 | mode++; | |
2491 | } | |
2492 | break; | |
2493 | ||
2494 | case 'w': | |
2495 | oflags = O_CREAT | O_TRUNC; | |
2496 | if (*++mode == '+') { | |
2497 | oflags |= O_RDWR; | |
2498 | mode++; | |
2499 | } | |
2500 | else | |
2501 | oflags |= O_WRONLY; | |
2502 | break; | |
2503 | ||
2504 | case 'a': | |
2505 | oflags = O_CREAT | O_APPEND; | |
2506 | if (*++mode == '+') { | |
2507 | oflags |= O_RDWR; | |
2508 | mode++; | |
2509 | } | |
2510 | else | |
2511 | oflags |= O_WRONLY; | |
2512 | break; | |
2513 | } | |
43e5477e JH |
2514 | |
2515 | /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */ | |
2516 | ||
2517 | /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one | |
2518 | * of them in, and then bit-and-masking the other them away, won't | |
2519 | * have much of an effect. */ | |
2520 | switch (*mode) { | |
2521 | case 'b': | |
2522 | #if O_TEXT != O_BINARY | |
2523 | oflags |= O_BINARY; | |
14a5cf38 | 2524 | oflags &= ~O_TEXT; |
43e5477e JH |
2525 | #endif |
2526 | mode++; | |
2527 | break; | |
2528 | case 't': | |
2529 | #if O_TEXT != O_BINARY | |
14a5cf38 JH |
2530 | oflags |= O_TEXT; |
2531 | oflags &= ~O_BINARY; | |
43e5477e JH |
2532 | #endif |
2533 | mode++; | |
2534 | break; | |
2535 | default: | |
2536 | # if O_BINARY != 0 | |
2537 | /* bit-or:ing with zero O_BINARY would be useless. */ | |
93f31ee9 PG |
2538 | /* |
2539 | * If neither "t" nor "b" was specified, open the file | |
2540 | * in O_BINARY mode. | |
43e5477e JH |
2541 | * |
2542 | * Note that if something else than the zero byte was seen | |
2543 | * here (e.g. bogus mode "rx"), just few lines later we will | |
2544 | * set the errno and invalidate the flags. | |
93f31ee9 PG |
2545 | */ |
2546 | oflags |= O_BINARY; | |
43e5477e JH |
2547 | # endif |
2548 | break; | |
93f31ee9 | 2549 | } |
14a5cf38 | 2550 | if (*mode || oflags == -1) { |
93189314 | 2551 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2552 | oflags = -1; |
2553 | } | |
2554 | return oflags; | |
9e353e3b NIS |
2555 | } |
2556 | ||
2557 | IV | |
f62ce20a | 2558 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2559 | { |
96a5add6 | 2560 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2561 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2562 | } |
2563 | ||
aa063c35 NIS |
2564 | static void |
2565 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2566 | { |
de009b76 | 2567 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2568 | #if defined(WIN32) |
aa063c35 NIS |
2569 | Stat_t st; |
2570 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2571 | if (!S_ISREG(st.st_mode)) { |
e17bc05a | 2572 | DEBUG_i( PerlIO_debug("%d is not regular file\n",fd) ); |
6caa5a9c NIS |
2573 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2574 | } | |
aa063c35 | 2575 | else { |
e17bc05a | 2576 | DEBUG_i( PerlIO_debug("%d _is_ a regular file\n",fd) ); |
aa063c35 | 2577 | } |
6caa5a9c NIS |
2578 | } |
2579 | #endif | |
aa063c35 NIS |
2580 | s->fd = fd; |
2581 | s->oflags = imode; | |
2582 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2583 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2584 | } |
2585 | ||
2586 | IV | |
2587 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2588 | { | |
2589 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2590 | if (*PerlIONext(f)) { |
4b069b44 | 2591 | /* We never call down so do any pending stuff now */ |
03c0554d | 2592 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2593 | /* |
71200d45 | 2594 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2595 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2596 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2597 | */ |
acbd16bf | 2598 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2599 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2600 | } |
2601 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2602 | |
14a5cf38 | 2603 | return code; |
4b803d04 NIS |
2604 | } |
2605 | ||
c2fcde81 JH |
2606 | IV |
2607 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2608 | { | |
de009b76 | 2609 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2610 | Off_t new_loc; |
96a5add6 | 2611 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2612 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2613 | #ifdef ESPIPE | |
2614 | SETERRNO(ESPIPE, LIB_INVARG); | |
2615 | #else | |
2616 | SETERRNO(EINVAL, LIB_INVARG); | |
2617 | #endif | |
2618 | return -1; | |
2619 | } | |
0723351e NC |
2620 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2621 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2622 | return -1; |
c2fcde81 JH |
2623 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2624 | return 0; | |
2625 | } | |
2626 | ||
9e353e3b | 2627 | PerlIO * |
14a5cf38 JH |
2628 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2629 | IV n, const char *mode, int fd, int imode, | |
2630 | int perm, PerlIO *f, int narg, SV **args) | |
2631 | { | |
d9dac8cd | 2632 | if (PerlIOValid(f)) { |
cc6623a8 | 2633 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2634 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2635 | } |
2636 | if (narg > 0) { | |
3b6c1aba | 2637 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2638 | mode++; |
2639 | else { | |
2640 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2641 | #ifdef VMS |
2642 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2643 | #else | |
14a5cf38 | 2644 | perm = 0666; |
5e2ce0f3 | 2645 | #endif |
14a5cf38 JH |
2646 | } |
2647 | if (imode != -1) { | |
41188aa0 TC |
2648 | STRLEN len; |
2649 | const char *path = SvPV_const(*args, len); | |
2650 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2651 | return NULL; |
14a5cf38 JH |
2652 | fd = PerlLIO_open3(path, imode, perm); |
2653 | } | |
2654 | } | |
2655 | if (fd >= 0) { | |
3b6c1aba | 2656 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2657 | mode++; |
2658 | if (!f) { | |
2659 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2660 | } |
2661 | if (!PerlIOValid(f)) { | |
a33cf58c | 2662 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2663 | PerlLIO_close(fd); |
a33cf58c NIS |
2664 | return NULL; |
2665 | } | |
d9dac8cd | 2666 | } |
aa063c35 | 2667 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2668 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2669 | if (*mode == IoTYPE_APPEND) |
2670 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2671 | return f; |
2672 | } | |
2673 | else { | |
2674 | if (f) { | |
6f207bd3 | 2675 | NOOP; |
14a5cf38 | 2676 | /* |
71200d45 | 2677 | * FIXME: pop layers ??? |
14a5cf38 JH |
2678 | */ |
2679 | } | |
2680 | return NULL; | |
2681 | } | |
9e353e3b NIS |
2682 | } |
2683 | ||
71200d45 | 2684 | PerlIO * |
ecdeb87c | 2685 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2686 | { |
dcda55fc | 2687 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2688 | int fd = os->fd; |
ecdeb87c NIS |
2689 | if (flags & PERLIO_DUP_FD) { |
2690 | fd = PerlLIO_dup(fd); | |
2691 | } | |
22c96fc1 | 2692 | if (fd >= 0) { |
ecdeb87c | 2693 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2694 | if (f) { |
2695 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2696 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2697 | return f; |
2698 | } | |
0a20f69b | 2699 | PerlLIO_close(fd); |
71200d45 NIS |
2700 | } |
2701 | return NULL; | |
2702 | } | |
2703 | ||
2704 | ||
9e353e3b | 2705 | SSize_t |
f62ce20a | 2706 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2707 | { |
abf9167d DM |
2708 | int fd; |
2709 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2710 | return -1; | |
2711 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2712 | #ifdef PERLIO_STD_SPECIAL |
2713 | if (fd == 0) | |
2714 | return PERLIO_STD_IN(fd, vbuf, count); | |
2715 | #endif | |
81428673 | 2716 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2717 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2718 | return 0; |
1fd8f4ce | 2719 | } |
14a5cf38 | 2720 | while (1) { |
b464bac0 | 2721 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2722 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2723 | if (len < 0) { |
2724 | if (errno != EAGAIN) { | |
2725 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2726 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2727 | } |
2728 | } | |
2729 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2730 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2731 | SETERRNO(0,0); |
2732 | } | |
14a5cf38 JH |
2733 | return len; |
2734 | } | |
abf9167d DM |
2735 | /* EINTR */ |
2736 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2737 | return -1; | |
14a5cf38 | 2738 | } |
e5964223 | 2739 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2740 | } |
2741 | ||
2742 | SSize_t | |
f62ce20a | 2743 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2744 | { |
abf9167d DM |
2745 | int fd; |
2746 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2747 | return -1; | |
2748 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2749 | #ifdef PERLIO_STD_SPECIAL |
2750 | if (fd == 1 || fd == 2) | |
2751 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2752 | #endif | |
14a5cf38 | 2753 | while (1) { |
de009b76 | 2754 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2755 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2756 | if (len < 0) { |
2757 | if (errno != EAGAIN) { | |
2758 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2759 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2760 | } |
2761 | } | |
14a5cf38 JH |
2762 | return len; |
2763 | } | |
abf9167d DM |
2764 | /* EINTR */ |
2765 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2766 | return -1; | |
06da4f11 | 2767 | } |
e5964223 | 2768 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2769 | } |
2770 | ||
9e353e3b | 2771 | Off_t |
f62ce20a | 2772 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2773 | { |
96a5add6 AL |
2774 | PERL_UNUSED_CONTEXT; |
2775 | ||
14a5cf38 | 2776 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2777 | } |
2778 | ||
2556f95e GF |
2779 | |
2780 | IV | |
2376d97d | 2781 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2782 | { |
de009b76 | 2783 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2784 | int code = 0; |
168d5872 NIS |
2785 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2786 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2787 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2788 | return 0; | |
22569500 | 2789 | } |
93a8090d NIS |
2790 | } |
2791 | else { | |
93189314 | 2792 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2793 | return -1; |
2794 | } | |
14a5cf38 JH |
2795 | while (PerlLIO_close(fd) != 0) { |
2796 | if (errno != EINTR) { | |
2797 | code = -1; | |
2798 | break; | |
2799 | } | |
abf9167d DM |
2800 | /* EINTR */ |
2801 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2802 | return -1; | |
14a5cf38 JH |
2803 | } |
2804 | if (code == 0) { | |
2805 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2806 | } | |
2807 | return code; | |
9e353e3b NIS |
2808 | } |
2809 | ||
27da23d5 | 2810 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2811 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2812 | "unix", |
2813 | sizeof(PerlIOUnix), | |
2814 | PERLIO_K_RAW, | |
2815 | PerlIOUnix_pushed, | |
2376d97d | 2816 | PerlIOBase_popped, |
14a5cf38 | 2817 | PerlIOUnix_open, |
86e05cf2 | 2818 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2819 | NULL, |
2820 | PerlIOUnix_fileno, | |
71200d45 | 2821 | PerlIOUnix_dup, |
14a5cf38 JH |
2822 | PerlIOUnix_read, |
2823 | PerlIOBase_unread, | |
2824 | PerlIOUnix_write, | |
2825 | PerlIOUnix_seek, | |
2826 | PerlIOUnix_tell, | |
2827 | PerlIOUnix_close, | |
22569500 NIS |
2828 | PerlIOBase_noop_ok, /* flush */ |
2829 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2830 | PerlIOBase_eof, |
2831 | PerlIOBase_error, | |
2832 | PerlIOBase_clearerr, | |
2833 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2834 | NULL, /* get_base */ |
2835 | NULL, /* get_bufsiz */ | |
2836 | NULL, /* get_ptr */ | |
2837 | NULL, /* get_cnt */ | |
2838 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2839 | }; |
2840 | ||
2841 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2842 | /* |
71200d45 | 2843 | * stdio as a layer |
14a5cf38 | 2844 | */ |
9e353e3b | 2845 | |
313e59c8 NIS |
2846 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2847 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2848 | broken by the last second glibc 2.3 fix | |
2849 | */ | |
2850 | #define STDIO_BUFFER_WRITABLE | |
2851 | #endif | |
2852 | ||
2853 | ||
14a5cf38 JH |
2854 | typedef struct { |
2855 | struct _PerlIO base; | |
22569500 | 2856 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2857 | } PerlIOStdio; |
2858 | ||
2859 | IV | |
f62ce20a | 2860 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2861 | { |
96a5add6 AL |
2862 | PERL_UNUSED_CONTEXT; |
2863 | ||
c4420975 AL |
2864 | if (PerlIOValid(f)) { |
2865 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2866 | if (s) | |
2867 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2868 | } |
2869 | errno = EBADF; | |
2870 | return -1; | |
9e353e3b NIS |
2871 | } |
2872 | ||
766a733e | 2873 | char * |
14a5cf38 JH |
2874 | PerlIOStdio_mode(const char *mode, char *tmode) |
2875 | { | |
de009b76 | 2876 | char * const ret = tmode; |
a0625d38 SR |
2877 | if (mode) { |
2878 | while (*mode) { | |
2879 | *tmode++ = *mode++; | |
2880 | } | |
14a5cf38 | 2881 | } |
95005ad8 | 2882 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2883 | *tmode++ = 'b'; |
2884 | #endif | |
14a5cf38 JH |
2885 | *tmode = '\0'; |
2886 | return ret; | |
2887 | } | |
2888 | ||
4b803d04 | 2889 | IV |
2dc2558e | 2890 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2891 | { |
1fd8f4ce NIS |
2892 | PerlIO *n; |
2893 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2894 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2895 | if (toptab == tab) { |
2896 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2897 | PerlIO_pop(aTHX_ f); | |
2898 | return 0; | |
2899 | } else { | |
de009b76 | 2900 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2901 | char tmode[8]; |
2902 | FILE *stdio; | |
81428673 | 2903 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2904 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2905 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2906 | /* We never call down so do any pending stuff now */ | |
2907 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2908 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2909 | } |
1fd8f4ce NIS |
2910 | else { |
2911 | return -1; | |
2912 | } | |
2913 | } | |
14a5cf38 | 2914 | } |
2dc2558e | 2915 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2916 | } |
2917 | ||
22569500 | 2918 | |
9e353e3b | 2919 | PerlIO * |
4b069b44 | 2920 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2921 | { |
14a5cf38 JH |
2922 | dTHX; |
2923 | PerlIO *f = NULL; | |
ea5bc90f YK |
2924 | #ifdef EBCDIC |
2925 | int rc; | |
2926 | char filename[FILENAME_MAX]; | |
2927 | fldata_t fileinfo; | |
2928 | #endif | |
14a5cf38 | 2929 | if (stdio) { |
22569500 | 2930 | PerlIOStdio *s; |
375ed12a JH |
2931 | int fd0 = fileno(stdio); |
2932 | if (fd0 < 0) { | |
ea5bc90f YK |
2933 | #ifdef EBCDIC |
2934 | rc = fldata(stdio,filename,&fileinfo); | |
2935 | if(rc != 0){ | |
2936 | return NULL; | |
2937 | } | |
2938 | if(fileinfo.__dsorgHFS){ | |
2939 | return NULL; | |
2940 | } | |
2941 | /*This MVS dataset , OK!*/ | |
2942 | #else | |
375ed12a | 2943 | return NULL; |
ea5bc90f | 2944 | #endif |
375ed12a | 2945 | } |
4b069b44 NIS |
2946 | if (!mode || !*mode) { |
2947 | /* We need to probe to see how we can open the stream | |
2948 | so start with read/write and then try write and read | |
2949 | we dup() so that we can fclose without loosing the fd. | |
2950 | ||
2951 | Note that the errno value set by a failing fdopen | |
2952 | varies between stdio implementations. | |
2953 | */ | |
375ed12a JH |
2954 | const int fd = PerlLIO_dup(fd0); |
2955 | FILE *f2; | |
2956 | if (fd < 0) { | |
2957 | return f; | |
2958 | } | |
2959 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2960 | if (!f2) { |
a33cf58c | 2961 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2962 | } |
2963 | if (!f2) { | |
a33cf58c | 2964 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2965 | } |
2966 | if (!f2) { | |
2967 | /* Don't seem to be able to open */ | |
2968 | PerlLIO_close(fd); | |
2969 | return f; | |
2970 | } | |
2971 | fclose(f2); | |
22569500 | 2972 | } |
de092133 | 2973 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2974 | s = PerlIOSelf(f, PerlIOStdio); |
2975 | s->stdio = stdio; | |
ea5bc90f YK |
2976 | #ifdef EBCDIC |
2977 | fd0 = fileno(stdio); | |
2978 | if(fd0 != -1){ | |
2979 | PerlIOUnix_refcnt_inc(fd0); | |
2980 | } | |
2981 | else{ | |
2982 | rc = fldata(stdio,filename,&fileinfo); | |
2983 | if(rc != 0){ | |
2984 | PerlIOUnix_refcnt_inc(fd0); | |
2985 | } | |
2986 | if(fileinfo.__dsorgHFS){ | |
2987 | PerlIOUnix_refcnt_inc(fd0); | |
2988 | } | |
2989 | /*This MVS dataset , OK!*/ | |
2990 | } | |
2991 | #else | |
c586124f | 2992 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
ea5bc90f | 2993 | #endif |
a33cf58c | 2994 | } |
14a5cf38 JH |
2995 | } |
2996 | return f; | |
9e353e3b NIS |
2997 | } |
2998 | ||
2999 | PerlIO * | |
14a5cf38 JH |
3000 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3001 | IV n, const char *mode, int fd, int imode, | |
3002 | int perm, PerlIO *f, int narg, SV **args) | |
3003 | { | |
3004 | char tmode[8]; | |
d9dac8cd | 3005 | if (PerlIOValid(f)) { |
41188aa0 TC |
3006 | STRLEN len; |
3007 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 3008 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 3009 | FILE *stdio; |
41188aa0 | 3010 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 3011 | return NULL; |
1751d015 | 3012 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
3013 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
3014 | s->stdio); | |
14a5cf38 JH |
3015 | if (!s->stdio) |
3016 | return NULL; | |
3017 | s->stdio = stdio; | |
1751d015 | 3018 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3019 | return f; |
3020 | } | |
3021 | else { | |
3022 | if (narg > 0) { | |
41188aa0 TC |
3023 | STRLEN len; |
3024 | const char * const path = SvPV_const(*args, len); | |
3025 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 3026 | return NULL; |
3b6c1aba | 3027 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3028 | mode++; |
3029 | fd = PerlLIO_open3(path, imode, perm); | |
3030 | } | |
3031 | else { | |
95005ad8 GH |
3032 | FILE *stdio; |
3033 | bool appended = FALSE; | |
3034 | #ifdef __CYGWIN__ | |
3035 | /* Cygwin wants its 'b' early. */ | |
3036 | appended = TRUE; | |
3037 | mode = PerlIOStdio_mode(mode, tmode); | |
3038 | #endif | |
3039 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3040 | if (stdio) { |
6f0313ac JH |
3041 | if (!f) { |
3042 | f = PerlIO_allocate(aTHX); | |
3043 | } | |
95005ad8 GH |
3044 | if (!appended) |
3045 | mode = PerlIOStdio_mode(mode, tmode); | |
3046 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3047 | if (f) { | |
0f0f9e2b JH |
3048 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3049 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3050 | } else { | |
3051 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3052 | } |
3053 | return f; | |
3054 | } | |
3055 | else { | |
3056 | return NULL; | |
3057 | } | |
14a5cf38 JH |
3058 | } |
3059 | } | |
3060 | if (fd >= 0) { | |
3061 | FILE *stdio = NULL; | |
3062 | int init = 0; | |
3b6c1aba | 3063 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3064 | init = 1; |
3065 | mode++; | |
3066 | } | |
3067 | if (init) { | |
3068 | switch (fd) { | |
3069 | case 0: | |
3070 | stdio = PerlSIO_stdin; | |
3071 | break; | |
3072 | case 1: | |
3073 | stdio = PerlSIO_stdout; | |
3074 | break; | |
3075 | case 2: | |
3076 | stdio = PerlSIO_stderr; | |
3077 | break; | |
3078 | } | |
3079 | } | |
3080 | else { | |
3081 | stdio = PerlSIO_fdopen(fd, mode = | |
3082 | PerlIOStdio_mode(mode, tmode)); | |
3083 | } | |
3084 | if (stdio) { | |
d9dac8cd NIS |
3085 | if (!f) { |
3086 | f = PerlIO_allocate(aTHX); | |
3087 | } | |
a33cf58c | 3088 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3089 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3090 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3091 | } |
14a5cf38 JH |
3092 | return f; |
3093 | } | |
0a20f69b | 3094 | PerlLIO_close(fd); |
14a5cf38 JH |
3095 | } |
3096 | } | |
ee518936 | 3097 | return NULL; |
9e353e3b NIS |
3098 | } |
3099 | ||
1751d015 | 3100 | PerlIO * |
ecdeb87c | 3101 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3102 | { |
3103 | /* This assumes no layers underneath - which is what | |
3104 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3105 | */ | |
ecdeb87c | 3106 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3107 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3108 | const int fd = fileno(stdio); |
9217ff3f | 3109 | char mode[8]; |
ecdeb87c | 3110 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3111 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3112 | if (dfd >= 0) { |
3113 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3114 | goto set_this; | |
ecdeb87c NIS |
3115 | } |
3116 | else { | |
6f207bd3 | 3117 | NOOP; |
ecdeb87c NIS |
3118 | /* FIXME: To avoid messy error recovery if dup fails |
3119 | re-use the existing stdio as though flag was not set | |
3120 | */ | |
3121 | } | |
3122 | } | |
9217ff3f NIS |
3123 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3124 | set_this: | |
694c95cf | 3125 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3126 | if(stdio) { |
3127 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3128 | } | |
1751d015 NIS |
3129 | } |
3130 | return f; | |
3131 | } | |
3132 | ||
0d7a5398 NIS |
3133 | static int |
3134 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3135 | { | |
96a5add6 AL |
3136 | PERL_UNUSED_CONTEXT; |
3137 | ||
0d7a5398 | 3138 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3139 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3140 | */ |
36b1c892 AD |
3141 | # if defined(HAS_FDCLOSE) |
3142 | return fdclose(f, NULL) == 0 ? 1 : 0; | |
3143 | # elif defined(__UCLIBC__) | |
ef8eacb8 AT |
3144 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ |
3145 | f->__filedes = -1; | |
3146 | return 1; | |
3147 | # elif defined(__GLIBC__) | |
0d7a5398 | 3148 | /* There may be a better way for GLIBC: |
37725cdc | 3149 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3150 | */ |
3151 | f->_fileno = -1; | |
3152 | return 1; | |
bdea967c | 3153 | # elif defined(__sun) |
f5992bc4 | 3154 | PERL_UNUSED_ARG(f); |
cfedb851 | 3155 | return 0; |
0d7a5398 NIS |
3156 | # elif defined(__hpux) |
3157 | f->__fileH = 0xff; | |
3158 | f->__fileL = 0xff; | |
3159 | return 1; | |
9837d373 | 3160 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3161 | your platform does not have special entry try this one. |
9837d373 NIS |
3162 | [For OSF only have confirmation for Tru64 (alpha) |
3163 | but assume other OSFs will be similar.] | |
37725cdc | 3164 | */ |
9837d373 | 3165 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3166 | f->_file = -1; |
3167 | return 1; | |
3168 | # elif defined(__FreeBSD__) | |
3169 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3170 | - we could insert a dummy func in the _close function entry |
3171 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3172 | */ |
3173 | f->_file = -1; | |
0c49ea6a SU |
3174 | return 1; |
3175 | # elif defined(__OpenBSD__) | |
3176 | /* There may be a better way on OpenBSD: | |
3177 | - we could insert a dummy func in the _close function entry | |
3178 | f->_close = (int (*)(void *)) dummy_close; | |
3179 | */ | |
3180 | f->_file = -1; | |
0d7a5398 | 3181 | return 1; |
59ad941d IZ |
3182 | # elif defined(__EMX__) |
3183 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3184 | f->_handle = -1; | |
3185 | return 1; | |
0d7a5398 NIS |
3186 | # elif defined(__CYGWIN__) |
3187 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3188 | - we could insert a dummy func in the _close function entry |
3189 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3190 | */ |
3191 | f->_file = -1; | |
3192 | return 1; | |
3193 | # elif defined(WIN32) | |
378eeda7 | 3194 | # if defined(UNDER_CE) |
b475b3e6 JH |
3195 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3196 | structure at all | |
3197 | */ | |
0d7a5398 NIS |
3198 | # else |
3199 | f->_file = -1; | |
3200 | # endif | |
3201 | return 1; | |
3202 | # else | |
3203 | #if 0 | |
37725cdc | 3204 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3205 | (which isn't thread safe) instead |
37725cdc | 3206 | */ |
0d7a5398 NIS |
3207 | # error "Don't know how to set FILE.fileno on your platform" |
3208 | #endif | |
8772537c | 3209 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3210 | return 0; |
3211 | # endif | |
3212 | } | |
3213 | ||
1751d015 | 3214 | IV |
f62ce20a | 3215 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3216 | { |
c4420975 | 3217 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3218 | if (!stdio) { |
3219 | errno = EBADF; | |
3220 | return -1; | |
3221 | } | |
9217ff3f | 3222 | else { |
de009b76 | 3223 | const int fd = fileno(stdio); |
0d7a5398 | 3224 | int invalidate = 0; |
bbfd922f | 3225 | IV result = 0; |
1d791a44 | 3226 | int dupfd = -1; |
4ee39169 | 3227 | dSAVEDERRNO; |
a2e578da MHM |
3228 | #ifdef USE_ITHREADS |
3229 | dVAR; | |
3230 | #endif | |
0d7a5398 | 3231 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3232 | /* Socks lib overrides close() but stdio isn't linked to |
3233 | that library (though we are) - so we must call close() | |
3234 | on sockets on stdio's behalf. | |
3235 | */ | |
0d7a5398 NIS |
3236 | int optval; |
3237 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3238 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3239 | invalidate = 1; |
0d7a5398 | 3240 | #endif |
d8723f43 NC |
3241 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3242 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3243 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3244 | trying to close an already closed handle which somehow it still has | |
3245 | a reference to. (via.xs, I'm looking at you). */ | |
3246 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3247 | /* File descriptor still in use */ | |
0d7a5398 | 3248 | invalidate = 1; |
d8723f43 | 3249 | } |
0d7a5398 | 3250 | if (invalidate) { |
6b4ce6c8 AL |
3251 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3252 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3253 | return 0; | |
3254 | if (stdio == stdout || stdio == stderr) | |
3255 | return PerlIO_flush(f); | |
d88f7f65 JH |
3256 | } |
3257 | #ifdef USE_ITHREADS | |
3258 | MUTEX_LOCK(&PL_perlio_mutex); | |
3259 | /* Right. We need a mutex here because for a brief while we | |
3260 | will have the situation that fd is actually closed. Hence if | |
3261 | a second thread were to get into this block, its dup() would | |
3262 | likely return our fd as its dupfd. (after all, it is closed) | |
3263 | Then if we get to the dup2() first, we blat the fd back | |
3264 | (messing up its temporary as a side effect) only for it to | |
3265 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3266 | ||
3267 | /* There is, of course, a race condition, that any other thread | |
3268 | trying to input/output/whatever on this fd will be stuffed | |
3269 | for the duration of this little manoeuvrer. Perhaps we | |
3270 | should hold an IO mutex for the duration of every IO | |
3271 | operation if we know that invalidate doesn't work on this | |
3272 | platform, but that would suck, and could kill performance. | |
3273 | ||
3274 | Except that correctness trumps speed. | |
3275 | Advice from klortho #11912. */ | |
3276 | #endif | |
3277 | if (invalidate) { | |
37725cdc NIS |
3278 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3279 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3280 | fileno slot of the FILE * | |
3281 | */ | |
bbfd922f | 3282 | result = PerlIO_flush(f); |
4ee39169 | 3283 | SAVE_ERRNO; |
6b4ce6c8 | 3284 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3285 | if (!invalidate) { |
6b4ce6c8 | 3286 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3287 | #ifdef USE_ITHREADS |
9bab90c0 | 3288 | if (dupfd < 0) { |
711e8db2 NC |
3289 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3290 | recover from here, or if closing this particular FILE * | |
3291 | is a good idea now. */ | |
3292 | } | |
3293 | #endif | |
3294 | } | |
94ccb807 JH |
3295 | } else { |
3296 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3297 | } |
0d7a5398 | 3298 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3299 | /* We treat error from stdio as success if we invalidated |
3300 | errno may NOT be expected EBADF | |
e8529473 NIS |
3301 | */ |
3302 | if (invalidate && result != 0) { | |
4ee39169 | 3303 | RESTORE_ERRNO; |
0d7a5398 | 3304 | result = 0; |
37725cdc | 3305 | } |
6b4ce6c8 AL |
3306 | #ifdef SOCKS5_VERSION_NAME |
3307 | /* in SOCKS' case, let close() determine return value */ | |
3308 | result = close(fd); | |
3309 | #endif | |
1d791a44 | 3310 | if (dupfd >= 0) { |
0d7a5398 | 3311 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3312 | PerlLIO_close(dupfd); |
d88f7f65 | 3313 | } |
711e8db2 | 3314 | #ifdef USE_ITHREADS |
d88f7f65 | 3315 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3316 | #endif |
9217ff3f | 3317 | return result; |
37725cdc | 3318 | } |
1751d015 NIS |
3319 | } |
3320 | ||
9e353e3b | 3321 | SSize_t |
f62ce20a | 3322 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3323 | { |
abf9167d | 3324 | FILE * s; |
14a5cf38 | 3325 | SSize_t got = 0; |
abf9167d DM |
3326 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3327 | return -1; | |
3328 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3329 | for (;;) { |
3330 | if (count == 1) { | |
3331 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3332 | /* | |
3333 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3334 | * stdio does not do that for fread() | |
3335 | */ | |
de009b76 | 3336 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3337 | if (ch != EOF) { |
3338 | *buf = ch; | |
3339 | got = 1; | |
3340 | } | |
14a5cf38 | 3341 | } |
4d948241 NIS |
3342 | else |
3343 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3344 | if (got == 0 && PerlSIO_ferror(s)) |
3345 | got = -1; | |
42a7a32f | 3346 | if (got >= 0 || errno != EINTR) |
4d948241 | 3347 | break; |
abf9167d DM |
3348 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3349 | return -1; | |
42a7a32f | 3350 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3351 | } |
bdae4172 JH |
3352 | #ifdef __sgi |
3353 | /* Under some circumstances IRIX stdio fgetc() and fread() | |
3354 | * set the errno to ENOENT, which makes no sense according | |
3355 | * to either IRIX or POSIX. [rt.perl.org #123977] */ | |
3356 | if (errno == ENOENT) SETERRNO(0,0); | |
3357 | #endif | |
14a5cf38 | 3358 | return got; |
9e353e3b NIS |
3359 | } |
3360 | ||
3361 | SSize_t | |
f62ce20a | 3362 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3363 | { |
14a5cf38 | 3364 | SSize_t unread = 0; |
c4420975 | 3365 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3366 | |
313e59c8 | 3367 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3368 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3369 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3370 | STDCHAR *base = PerlIO_get_base(f); | |
3371 | SSize_t cnt = PerlIO_get_cnt(f); | |
3372 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3373 | SSize_t avail = ptr - base; | |
3374 | if (avail > 0) { | |
3375 | if (avail > count) { | |
3376 | avail = count; | |
3377 | } | |
3378 | ptr -= avail; | |
3379 | Move(buf-avail,ptr,avail,STDCHAR); | |
3380 | count -= avail; | |
3381 | unread += avail; | |
3382 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3383 | if (PerlSIO_feof(s) && unread >= 0) |
3384 | PerlSIO_clearerr(s); | |
3385 | } | |
3386 | } | |
313e59c8 NIS |
3387 | else |
3388 | #endif | |
3389 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3390 | /* We can get pointer to buffer but not its base |
3391 | Do ungetc() but check chars are ending up in the | |
3392 | buffer | |
3393 | */ | |
3394 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3395 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3396 | while (count > 0) { | |
de009b76 | 3397 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3398 | if (ungetc(ch,s) != ch) { |
3399 | /* ungetc did not work */ | |
3400 | break; | |
3401 | } | |
3402 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3403 | /* Did not change pointer as expected */ | |
375ed12a JH |
3404 | if (fgetc(s) != EOF) /* get char back again */ |
3405 | break; | |
9f7cd136 NIS |
3406 | } |
3407 | /* It worked ! */ | |
3408 | count--; | |
3409 | unread++; | |
93679785 NIS |
3410 | } |
3411 | } | |
3412 | ||
3413 | if (count > 0) { | |
3414 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3415 | } |
3416 | return unread; | |
9e353e3b NIS |
3417 | } |
3418 | ||
3419 | SSize_t | |
f62ce20a | 3420 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3421 | { |
4d948241 | 3422 | SSize_t got; |
abf9167d DM |
3423 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3424 | return -1; | |
4d948241 NIS |
3425 | for (;;) { |
3426 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3427 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3428 | if (got >= 0 || errno != EINTR) |
4d948241 | 3429 | break; |
abf9167d DM |
3430 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3431 | return -1; | |
42a7a32f | 3432 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3433 | } |
3434 | return got; | |
9e353e3b NIS |
3435 | } |
3436 | ||
94a175e1 | 3437 | IV |
f62ce20a | 3438 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3439 | { |
c4420975 | 3440 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3441 | PERL_UNUSED_CONTEXT; |
3442 | ||
94a175e1 | 3443 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3444 | } |
3445 | ||
3446 | Off_t | |
f62ce20a | 3447 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3448 | { |
c4420975 | 3449 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3450 | PERL_UNUSED_CONTEXT; |
3451 | ||
94a175e1 | 3452 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3453 | } |
3454 | ||
3455 | IV | |
f62ce20a | 3456 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3457 | { |
c4420975 | 3458 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3459 | PERL_UNUSED_CONTEXT; |
3460 | ||
14a5cf38 JH |
3461 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3462 | return PerlSIO_fflush(stdio); | |
3463 | } | |
3464 | else { | |
6f207bd3 | 3465 | NOOP; |
88b61e10 | 3466 | #if 0 |
14a5cf38 JH |
3467 | /* |
3468 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3469 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3470 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3471 | * layer read-to-read |
14a5cf38 JH |
3472 | */ |
3473 | /* | |
71200d45 | 3474 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3475 | */ |
4ee39169 | 3476 | dSAVE_ERRNO; |
14a5cf38 | 3477 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3478 | RESTORE_ERRNO; |
88b61e10 | 3479 | #endif |
14a5cf38 JH |
3480 | } |
3481 | return 0; | |
9e353e3b NIS |
3482 | } |
3483 | ||
3484 | IV | |
f62ce20a | 3485 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3486 | { |
96a5add6 AL |
3487 | PERL_UNUSED_CONTEXT; |
3488 | ||
14a5cf38 | 3489 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3490 | } |
3491 | ||
3492 | IV | |
f62ce20a | 3493 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3494 | { |
96a5add6 AL |
3495 | PERL_UNUSED_CONTEXT; |
3496 | ||
263df5f1 | 3497 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3498 | } |
3499 | ||
3500 | void | |
f62ce20a | 3501 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3502 | { |
96a5add6 AL |
3503 | PERL_UNUSED_CONTEXT; |
3504 | ||
14a5cf38 | 3505 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3506 | } |
3507 | ||
3508 | void | |
f62ce20a | 3509 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3510 | { |
96a5add6 AL |
3511 | PERL_UNUSED_CONTEXT; |
3512 | ||
9e353e3b | 3513 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3514 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3515 | #else |
bd61b366 | 3516 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3517 | #endif |
3518 | } | |
3519 | ||
3520 | #ifdef FILE_base | |
3521 | STDCHAR * | |
f62ce20a | 3522 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3523 | { |
c4420975 | 3524 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3525 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3526 | } |
3527 | ||
3528 | Size_t | |
f62ce20a | 3529 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3530 | { |
c4420975 | 3531 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3532 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3533 | } |
3534 | #endif | |
3535 | ||
3536 | #ifdef USE_STDIO_PTR | |
3537 | STDCHAR * | |
f62ce20a | 3538 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3539 | { |
c4420975 | 3540 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3541 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3542 | } |
3543 | ||
3544 | SSize_t | |
f62ce20a | 3545 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3546 | { |
c4420975 | 3547 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3548 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3549 | } |
3550 | ||
3551 | void | |
f62ce20a | 3552 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3553 | { |
c4420975 | 3554 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3555 | if (ptr != NULL) { |
9e353e3b | 3556 | #ifdef STDIO_PTR_LVALUE |
46f05249 JH |
3557 | /* This is a long-standing infamous mess. The root of the |
3558 | * problem is that one cannot know the signedness of char, and | |
3559 | * more precisely the signedness of FILE._ptr. The following | |
3560 | * things have been tried, and they have all failed (across | |
3561 | * different compilers (remember that core needs to to build | |
3562 | * also with c++) and compiler options: | |
3563 | * | |
3564 | * - casting the RHS to (void*) -- works in *some* places | |
3565 | * - casting the LHS to (void*) -- totally unportable | |
3566 | * | |
3567 | * So let's try silencing the warning at least for gcc. */ | |
3568 | GCC_DIAG_IGNORE(-Wpointer-sign); | |
d06fc7d4 | 3569 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
46f05249 | 3570 | GCC_DIAG_RESTORE; |
9e353e3b | 3571 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3572 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3573 | #endif |
3574 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3575 | /* |
71200d45 | 3576 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3577 | */ |
3578 | return; | |
9e353e3b | 3579 | #endif |
22569500 | 3580 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3581 | PerlProc_abort(); |
22569500 | 3582 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3583 | } |
3584 | /* | |
71200d45 | 3585 | * Now (or only) set cnt |
14a5cf38 | 3586 | */ |
9e353e3b | 3587 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3588 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3589 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3590 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3591 | PerlSIO_set_ptr(stdio, |
3592 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3593 | cnt)); | |
22569500 | 3594 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3595 | PerlProc_abort(); |
22569500 NIS |
3596 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3597 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3598 | } |
3599 | ||
93679785 | 3600 | |
9e353e3b NIS |
3601 | #endif |
3602 | ||
93679785 NIS |
3603 | IV |
3604 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3605 | { | |
abf9167d | 3606 | FILE * stdio; |
93679785 | 3607 | int c; |
96a5add6 | 3608 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3609 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3610 | return -1; | |
3611 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3612 | |
93679785 NIS |
3613 | /* |
3614 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3615 | */ | |
3616 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3617 | if (PerlSIO_fflush(stdio) != 0) | |
3618 | return EOF; | |
3619 | } | |
f3be3723 BL |
3620 | for (;;) { |
3621 | c = PerlSIO_fgetc(stdio); | |
3622 | if (c != EOF) | |
3623 | break; | |
3624 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3625 | return EOF; | |
abf9167d DM |
3626 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3627 | return -1; | |
f3be3723 BL |
3628 | SETERRNO(0,0); |
3629 | } | |
93679785 NIS |
3630 | |
3631 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3632 | |
3633 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3634 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3635 | /* Fake ungetc() to the real buffer in case system's ungetc |
3636 | goes elsewhere | |
3637 | */ | |
3638 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3639 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3640 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3641 | if (ptr == base+1) { | |
3642 | *--ptr = (STDCHAR) c; | |
3643 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3644 | if (PerlSIO_feof(stdio)) | |
3645 | PerlSIO_clearerr(stdio); | |
3646 | return 0; | |
3647 | } | |
3648 | } | |
313e59c8 NIS |
3649 | else |
3650 | #endif | |
3651 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3652 | STDCHAR ch = c; |
3653 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3654 | return 0; | |
3655 | } | |
3656 | } | |
93679785 NIS |
3657 | #endif |
3658 | ||
93679785 | 3659 | /* If buffer snoop scheme above fails fall back to |
9f7cd136 | 3660 | using ungetc(). |
93679785 NIS |
3661 | */ |
3662 | if (PerlSIO_ungetc(c, stdio) != c) | |
3663 | return EOF; | |
5876737a | 3664 | |
93679785 NIS |
3665 | return 0; |
3666 | } | |
3667 | ||
3668 | ||
3669 | ||
27da23d5 | 3670 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3671 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3672 | "stdio", |
3673 | sizeof(PerlIOStdio), | |
86e05cf2 | 3674 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3675 | PerlIOStdio_pushed, |
2376d97d | 3676 | PerlIOBase_popped, |
14a5cf38 | 3677 | PerlIOStdio_open, |
86e05cf2 | 3678 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3679 | NULL, |
3680 | PerlIOStdio_fileno, | |
71200d45 | 3681 | PerlIOStdio_dup, |
14a5cf38 JH |
3682 | PerlIOStdio_read, |
3683 | PerlIOStdio_unread, | |
3684 | PerlIOStdio_write, | |
3685 | PerlIOStdio_seek, | |
3686 | PerlIOStdio_tell, | |
3687 | PerlIOStdio_close, | |
3688 | PerlIOStdio_flush, | |
3689 | PerlIOStdio_fill, | |
3690 | PerlIOStdio_eof, | |
3691 | PerlIOStdio_error, | |
3692 | PerlIOStdio_clearerr, | |
3693 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3694 | #ifdef FILE_base |
14a5cf38 JH |
3695 | PerlIOStdio_get_base, |
3696 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3697 | #else |
14a5cf38 JH |
3698 | NULL, |
3699 | NULL, | |
9e353e3b NIS |
3700 | #endif |
3701 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3702 | PerlIOStdio_get_ptr, |
3703 | PerlIOStdio_get_cnt, | |
15b61c98 | 3704 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3705 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3706 | # else |
3707 | NULL, | |
3708 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3709 | #else | |
3710 | NULL, | |
14a5cf38 JH |
3711 | NULL, |
3712 | NULL, | |
15b61c98 | 3713 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3714 | }; |
3715 | ||
b9d6bf13 JH |
3716 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3717 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3718 | FILE * |
81428673 | 3719 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3720 | { |
e87a358a | 3721 | dTHX; |
81428673 NIS |
3722 | FILE *stdio = NULL; |
3723 | if (PerlIOValid(f)) { | |
3724 | char buf[8]; | |
375ed12a JH |
3725 | int fd = PerlIO_fileno(f); |
3726 | if (fd < 0) { | |
3727 | return NULL; | |
3728 | } | |
81428673 NIS |
3729 | PerlIO_flush(f); |
3730 | if (!mode || !*mode) { | |
3731 | mode = PerlIO_modestr(f, buf); | |
3732 | } | |
3733 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3734 | if (stdio) { | |
3735 | PerlIOl *l = *f; | |
9f75cc58 | 3736 | PerlIO *f2; |
81428673 NIS |
3737 | /* De-link any lower layers so new :stdio sticks */ |
3738 | *f = NULL; | |
a0714e2c | 3739 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3740 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3741 | s->stdio = stdio; |
6b54a403 | 3742 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3743 | /* Link previous lower layers under new one */ |
3744 | *PerlIONext(f) = l; | |
3745 | } | |
3746 | else { | |
3747 | /* restore layers list */ | |
3748 | *f = l; | |
3749 | } | |
a33cf58c | 3750 | } |
14a5cf38 JH |
3751 | } |
3752 | return stdio; | |
9e353e3b NIS |
3753 | } |
3754 | ||
81428673 | 3755 | |
9e353e3b NIS |
3756 | FILE * |
3757 | PerlIO_findFILE(PerlIO *f) | |
3758 | { | |
14a5cf38 | 3759 | PerlIOl *l = *f; |
bbbc33d0 | 3760 | FILE *stdio; |
14a5cf38 JH |
3761 | while (l) { |
3762 | if (l->tab == &PerlIO_stdio) { | |
3763 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3764 | return s->stdio; | |
3765 | } | |
3766 | l = *PerlIONext(&l); | |
f7e7eb72 | 3767 | } |
4b069b44 | 3768 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3769 | /* However, we're not really exporting a FILE * to someone else (who |
3770 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3771 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3772 | descriptor. We have to do this, because if the loop above returns you |
3773 | the FILE *, then *it* didn't increase any reference count. So there's | |
3774 | only one way to be consistent. */ | |
3775 | stdio = PerlIO_exportFILE(f, NULL); | |
3776 | if (stdio) { | |
3777 | const int fd = fileno(stdio); | |
3778 | if (fd >= 0) | |
3779 | PerlIOUnix_refcnt_dec(fd); | |
3780 | } | |
3781 | return stdio; | |
9e353e3b NIS |
3782 | } |
3783 | ||
b9d6bf13 | 3784 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3785 | void |
3786 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3787 | { | |
22569500 NIS |
3788 | PerlIOl *l; |
3789 | while ((l = *p)) { | |
3790 | if (l->tab == &PerlIO_stdio) { | |
3791 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3792 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3793 | const int fd = fileno(f); |
3794 | if (fd >= 0) | |
3795 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3796 | { |
3797 | dTHX; | |
3798 | PerlIO_pop(aTHX_ p); | |
3799 | } | |
22569500 NIS |
3800 | return; |
3801 | } | |
3802 | } | |
3803 | p = PerlIONext(p); | |
3804 | } | |
3805 | return; | |
9e353e3b NIS |
3806 | } |
3807 | ||
3808 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3809 | /* |
71200d45 | 3810 | * perlio buffer layer |
14a5cf38 | 3811 | */ |
9e353e3b | 3812 | |
5e2ab84b | 3813 | IV |
2dc2558e | 3814 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3815 | { |
14a5cf38 | 3816 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3817 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3818 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3819 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3820 | } | |
4b069b44 | 3821 | if (*PerlIONext(f)) { |
de009b76 | 3822 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3823 | if (posn != (Off_t) - 1) { |
3824 | b->posn = posn; | |
3825 | } | |
14a5cf38 | 3826 | } |
2dc2558e | 3827 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3828 | } |
3829 | ||
9e353e3b | 3830 | PerlIO * |
14a5cf38 JH |
3831 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3832 | IV n, const char *mode, int fd, int imode, int perm, | |
3833 | PerlIO *f, int narg, SV **args) | |
3834 | { | |
04892f78 | 3835 | if (PerlIOValid(f)) { |
14a5cf38 | 3836 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3837 | PerlIO_funcs *tab = |
3838 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3839 | if (tab && tab->Open) | |
3840 | next = | |
3841 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3842 | next, narg, args); | |
2dc2558e | 3843 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3844 | return NULL; |
3845 | } | |
3846 | } | |
3847 | else { | |
04892f78 | 3848 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3849 | int init = 0; |
3b6c1aba | 3850 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3851 | init = 1; |
3852 | /* | |
71200d45 | 3853 | * mode++; |
14a5cf38 JH |
3854 | */ |
3855 | } | |
67363c0d JH |
3856 | if (tab && tab->Open) |
3857 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3858 | f, narg, args); | |
3859 | else | |
3860 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3861 | if (f) { |
22569500 | 3862 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3863 | /* |
3864 | * if push fails during open, open fails. close will pop us. | |
3865 | */ | |
3866 | PerlIO_close (f); | |
3867 | return NULL; | |
3868 | } else { | |
3869 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3870 | if (init && fd == 2) { |
3871 | /* | |
3872 | * Initial stderr is unbuffered | |
3873 | */ | |
3874 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3875 | } | |
23b84778 IZ |
3876 | #ifdef PERLIO_USING_CRLF |
3877 | # ifdef PERLIO_IS_BINMODE_FD | |
3878 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3879 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3880 | else |
3881 | # endif | |
3882 | /* | |
3883 | * do something about failing setmode()? --jhi | |
3884 | */ | |
3885 | PerlLIO_setmode(fd, O_BINARY); | |
3886 | #endif | |
8c8488cd | 3887 | #ifdef VMS |
8c8488cd CB |
3888 | /* Enable line buffering with record-oriented regular files |
3889 | * so we don't introduce an extraneous record boundary when | |
3890 | * the buffer fills up. | |
3891 | */ | |
3892 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3893 | Stat_t st; | |
3894 | if (PerlLIO_fstat(fd, &st) == 0 | |
3895 | && S_ISREG(st.st_mode) | |
3896 | && (st.st_fab_rfm == FAB$C_VAR | |
3897 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3898 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3899 | } | |
3900 | } | |
3901 | #endif | |
14a5cf38 JH |
3902 | } |
3903 | } | |
ee518936 | 3904 | } |
14a5cf38 | 3905 | return f; |
9e353e3b NIS |
3906 | } |
3907 | ||
14a5cf38 JH |
3908 | /* |
3909 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3910 | * read or write state. For write state, we put the postponed data through |
3911 | * the next layers. For read state, we seek() the next layers to the | |
3912 | * offset given by current position in the buffer, and discard the buffer | |
3913 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3914 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3915 | */ |
9e353e3b | 3916 | IV |
f62ce20a | 3917 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3918 | { |
dcda55fc | 3919 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3920 | int code = 0; |
04892f78 | 3921 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3922 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3923 | /* | |
71200d45 | 3924 | * write() the buffer |
14a5cf38 | 3925 | */ |
de009b76 AL |
3926 | const STDCHAR *buf = b->buf; |
3927 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3928 | while (p < b->ptr) { |
3929 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3930 | if (count > 0) { | |
3931 | p += count; | |
3932 | } | |
3933 | else if (count < 0 || PerlIO_error(n)) { | |
3934 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 3935 | PerlIO_save_errno(f); |
14a5cf38 JH |
3936 | code = -1; |
3937 | break; | |
3938 | } | |
3939 | } | |
3940 | b->posn += (p - buf); | |
3941 | } | |
3942 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3943 | STDCHAR *buf = PerlIO_get_base(f); | |
3944 | /* | |
71200d45 | 3945 | * Note position change |
14a5cf38 JH |
3946 | */ |
3947 | b->posn += (b->ptr - buf); | |
3948 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3949 | /* We did not consume all of it - try and seek downstream to |
3950 | our logical position | |
14a5cf38 | 3951 | */ |
4b069b44 | 3952 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3953 | /* Reload n as some layers may pop themselves on seek */ |
3954 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3955 | } |
ba5c3fe9 | 3956 | else { |
4b069b44 NIS |
3957 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3958 | data is lost for good - so return saying "ok" having undone | |
3959 | the position adjust | |
3960 | */ | |
3961 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3962 | return code; |
3963 | } | |
14a5cf38 JH |
3964 | } |
3965 | } | |
3966 | b->ptr = b->end = b->buf; | |
3967 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3968 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3969 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3970 | code = -1; |
3971 | return code; | |
6f9d8c32 NIS |
3972 | } |
3973 | ||
93c2c2ec IZ |
3974 | /* This discards the content of the buffer after b->ptr, and rereads |
3975 | * the buffer from the position off in the layer downstream; here off | |
3976 | * is at offset corresponding to b->ptr - b->buf. | |
3977 | */ | |
06da4f11 | 3978 | IV |
f62ce20a | 3979 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3980 | { |
dcda55fc | 3981 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3982 | PerlIO *n = PerlIONext(f); |
3983 | SSize_t avail; | |
3984 | /* | |
4b069b44 NIS |
3985 | * Down-stream flush is defined not to loose read data so is harmless. |
3986 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3987 | */ |
93c2c2ec | 3988 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3989 | return -1; |
3990 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3991 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3992 | |
3993 | if (!b->buf) | |
22569500 | 3994 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3995 | |
0f0eef27 | 3996 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3997 | |
14a5cf38 | 3998 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3999 | |
4000 | if (!PerlIOValid(n)) { | |
4001 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4002 | return -1; | |
4003 | } | |
4004 | ||
14a5cf38 JH |
4005 | if (PerlIO_fast_gets(n)) { |
4006 | /* | |
04892f78 | 4007 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4008 | * ->Read() because that will loop till it gets what we asked for |
4009 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4010 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4011 | */ |
4012 | avail = PerlIO_get_cnt(n); | |
4013 | if (avail <= 0) { | |
4014 | avail = PerlIO_fill(n); | |
4015 | if (avail == 0) | |
4016 | avail = PerlIO_get_cnt(n); | |
4017 | else { | |
4018 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4019 | avail = 0; | |
4020 | } | |
4021 | } | |
4022 | if (avail > 0) { | |
4023 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4024 | const SSize_t cnt = avail; |
eb160463 | 4025 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4026 | avail = b->bufsiz; |
4027 | Copy(ptr, b->buf, avail, STDCHAR); | |
4028 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4029 | } | |
4030 | } | |
4031 | else { | |
4032 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4033 | } | |
4034 | if (avail <= 0) { | |
4035 | if (avail == 0) | |
4036 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4037 | else | |
0ea86a10 | 4038 | { |
14a5cf38 | 4039 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
0ea86a10 FC |
4040 | PerlIO_save_errno(f); |
4041 | } | |
14a5cf38 JH |
4042 | return -1; |
4043 | } | |
4044 | b->end = b->buf + avail; | |
4045 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4046 | return 0; | |
06da4f11 NIS |
4047 | } |
4048 | ||
6f9d8c32 | 4049 | SSize_t |
f62ce20a | 4050 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4051 | { |
04892f78 | 4052 | if (PerlIOValid(f)) { |
dcda55fc | 4053 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4054 | if (!b->ptr) |
4055 | PerlIO_get_base(f); | |
f62ce20a | 4056 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4057 | } |
4058 | return 0; | |
6f9d8c32 NIS |
4059 | } |
4060 | ||
9e353e3b | 4061 | SSize_t |
f62ce20a | 4062 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4063 | { |
14a5cf38 | 4064 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4065 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4066 | SSize_t unread = 0; |
4067 | SSize_t avail; | |
4068 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4069 | PerlIO_flush(f); | |
4070 | if (!b->buf) | |
4071 | PerlIO_get_base(f); | |
4072 | if (b->buf) { | |
4073 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4074 | /* | |
4075 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4076 | * which have been read back to buffer start |
14a5cf38 JH |
4077 | */ |
4078 | avail = (b->ptr - b->buf); | |
4079 | } | |
4080 | else { | |
4081 | /* | |
4082 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4083 | * unread |
14a5cf38 JH |
4084 | */ |
4085 | avail = b->bufsiz; | |
4086 | b->end = b->buf + avail; | |
4087 | b->ptr = b->end; | |
4088 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4089 | /* | |
71200d45 | 4090 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4091 | */ |
4092 | b->posn -= b->bufsiz; | |
4093 | } | |
94e529cc | 4094 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4095 | /* |
71200d45 | 4096 | * If we have space for more than count, just move count |
14a5cf38 JH |
4097 | */ |
4098 | avail = count; | |
4099 | } | |
4100 | if (avail > 0) { | |
4101 | b->ptr -= avail; | |
4102 | buf -= avail; | |
4103 | /* | |
4104 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4105 | * there |
14a5cf38 JH |
4106 | */ |
4107 | if (buf != b->ptr) { | |
4108 | Copy(buf, b->ptr, avail, STDCHAR); | |
4109 | } | |
4110 | count -= avail; | |
4111 | unread += avail; | |
4112 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4113 | } | |
4114 | } | |
93679785 NIS |
4115 | if (count > 0) { |
4116 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4117 | } | |
14a5cf38 | 4118 | return unread; |
760ac839 LW |
4119 | } |
4120 | ||
9e353e3b | 4121 | SSize_t |
f62ce20a | 4122 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4123 | { |
de009b76 | 4124 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4125 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4126 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4127 | Size_t written = 0; |
4128 | if (!b->buf) | |
4129 | PerlIO_get_base(f); | |
4130 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4131 | return 0; | |
0678cb22 NIS |
4132 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4133 | if (PerlIO_flush(f) != 0) { | |
4134 | return 0; | |
4135 | } | |
4136 | } | |
ee56a6b9 CS |
4137 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4138 | flushptr = buf + count; | |
4139 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4140 | --flushptr; | |
4141 | } | |
14a5cf38 JH |
4142 | while (count > 0) { |
4143 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4144 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4145 | avail = count; |
ee56a6b9 CS |
4146 | if (flushptr > buf && flushptr <= buf + avail) |
4147 | avail = flushptr - buf; | |
14a5cf38 | 4148 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4149 | if (avail) { |
4150 | Copy(buf, b->ptr, avail, STDCHAR); | |
4151 | count -= avail; | |
4152 | buf += avail; | |
4153 | written += avail; | |
4154 | b->ptr += avail; | |
4155 | if (buf == flushptr) | |
4156 | PerlIO_flush(f); | |
14a5cf38 JH |
4157 | } |
4158 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4159 | if (PerlIO_flush(f) == -1) |
4160 | return -1; | |
14a5cf38 JH |
4161 | } |
4162 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4163 | PerlIO_flush(f); | |
4164 | return written; | |
9e353e3b NIS |
4165 | } |
4166 | ||
94a175e1 | 4167 | IV |
f62ce20a | 4168 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4169 | { |
14a5cf38 JH |
4170 | IV code; |
4171 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4172 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4173 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4174 | if (code == 0) { | |
de009b76 | 4175 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4176 | b->posn = PerlIO_tell(PerlIONext(f)); |
4177 | } | |
9e353e3b | 4178 | } |
14a5cf38 | 4179 | return code; |
9e353e3b NIS |
4180 | } |
4181 | ||
4182 | Off_t | |
f62ce20a | 4183 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4184 | { |
dcda55fc | 4185 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4186 | /* |
71200d45 | 4187 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4188 | */ |
4189 | Off_t posn = b->posn; | |
37725cdc | 4190 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4191 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4192 | #if 1 | |
4193 | /* As O_APPEND files are normally shared in some sense it is better | |
4194 | to flush : | |
4195 | */ | |
4196 | PerlIO_flush(f); | |
4197 | #else | |
37725cdc | 4198 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4199 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4200 | #endif | |
4201 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4202 | } | |
14a5cf38 JH |
4203 | if (b->buf) { |
4204 | /* | |
71200d45 | 4205 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4206 | */ |
4207 | posn += (b->ptr - b->buf); | |
4208 | } | |
4209 | return posn; | |
9e353e3b NIS |
4210 | } |
4211 | ||
4212 | IV | |
44798d05 NIS |
4213 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4214 | { | |
de009b76 AL |
4215 | const IV code = PerlIOBase_popped(aTHX_ f); |
4216 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4217 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4218 | Safefree(b->buf); | |
4219 | } | |
dcda55fc | 4220 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4221 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4222 | return code; | |
4223 | } | |
4224 | ||
4225 | IV | |
f62ce20a | 4226 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4227 | { |
de009b76 AL |
4228 | const IV code = PerlIOBase_close(aTHX_ f); |
4229 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4230 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4231 | Safefree(b->buf); |
14a5cf38 | 4232 | } |
dcda55fc | 4233 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4234 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4235 | return code; | |
760ac839 LW |
4236 | } |
4237 | ||
9e353e3b | 4238 | STDCHAR * |
f62ce20a | 4239 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4240 | { |
dcda55fc | 4241 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4242 | if (!b->buf) |
4243 | PerlIO_get_base(f); | |
4244 | return b->ptr; | |
9e353e3b NIS |
4245 | } |
4246 | ||
05d1247b | 4247 | SSize_t |
f62ce20a | 4248 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4249 | { |
dcda55fc | 4250 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4251 | if (!b->buf) |
4252 | PerlIO_get_base(f); | |
4253 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4254 | return (b->end - b->ptr); | |
4255 | return 0; | |
9e353e3b NIS |
4256 | } |
4257 | ||
4258 | STDCHAR * | |
f62ce20a | 4259 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4260 | { |
dcda55fc | 4261 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4262 | PERL_UNUSED_CONTEXT; |
4263 | ||
14a5cf38 JH |
4264 | if (!b->buf) { |
4265 | if (!b->bufsiz) | |
1810cd7c | 4266 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4267 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4268 | if (!b->buf) { |
4269 | b->buf = (STDCHAR *) & b->oneword; | |
4270 | b->bufsiz = sizeof(b->oneword); | |
4271 | } | |
dcda55fc | 4272 | b->end = b->ptr = b->buf; |
06da4f11 | 4273 | } |
14a5cf38 | 4274 | return b->buf; |
9e353e3b NIS |
4275 | } |
4276 | ||
4277 | Size_t | |
f62ce20a | 4278 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4279 | { |
dcda55fc | 4280 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4281 | if (!b->buf) |
4282 | PerlIO_get_base(f); | |
4283 | return (b->end - b->buf); | |
9e353e3b NIS |
4284 | } |
4285 | ||
4286 | void | |
f62ce20a | 4287 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4288 | { |
dcda55fc | 4289 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4290 | #ifndef DEBUGGING |
4291 | PERL_UNUSED_ARG(cnt); | |
4292 | #endif | |
14a5cf38 JH |
4293 | if (!b->buf) |
4294 | PerlIO_get_base(f); | |
4295 | b->ptr = ptr; | |
b727803b RGS |
4296 | assert(PerlIO_get_cnt(f) == cnt); |
4297 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4298 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4299 | } |
4300 | ||
71200d45 | 4301 | PerlIO * |
ecdeb87c | 4302 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4303 | { |
ecdeb87c | 4304 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4305 | } |
4306 | ||
4307 | ||
4308 | ||
27da23d5 | 4309 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4310 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4311 | "perlio", |
4312 | sizeof(PerlIOBuf), | |
86e05cf2 | 4313 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4314 | PerlIOBuf_pushed, |
44798d05 | 4315 | PerlIOBuf_popped, |
14a5cf38 | 4316 | PerlIOBuf_open, |
86e05cf2 | 4317 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4318 | NULL, |
4319 | PerlIOBase_fileno, | |
71200d45 | 4320 | PerlIOBuf_dup, |
14a5cf38 JH |
4321 | PerlIOBuf_read, |
4322 | PerlIOBuf_unread, | |
4323 | PerlIOBuf_write, | |
4324 | PerlIOBuf_seek, | |
4325 | PerlIOBuf_tell, | |
4326 | PerlIOBuf_close, | |
4327 | PerlIOBuf_flush, | |
4328 | PerlIOBuf_fill, | |
4329 | PerlIOBase_eof, | |
4330 | PerlIOBase_error, | |
4331 | PerlIOBase_clearerr, | |
4332 | PerlIOBase_setlinebuf, | |
4333 | PerlIOBuf_get_base, | |
4334 | PerlIOBuf_bufsiz, | |
4335 | PerlIOBuf_get_ptr, | |
4336 | PerlIOBuf_get_cnt, | |
4337 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4338 | }; |
4339 | ||
66ecd56b | 4340 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4341 | /* |
71200d45 | 4342 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4343 | */ |
5e2ab84b NIS |
4344 | |
4345 | IV | |
f62ce20a | 4346 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4347 | { |
14a5cf38 | 4348 | /* |
71200d45 | 4349 | * Should never happen |
14a5cf38 JH |
4350 | */ |
4351 | PerlIO_flush(f); | |
4352 | return 0; | |
5e2ab84b NIS |
4353 | } |
4354 | ||
4355 | IV | |
f62ce20a | 4356 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4357 | { |
14a5cf38 | 4358 | /* |
71200d45 | 4359 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4360 | */ |
4361 | PerlIO_flush(f); | |
4362 | return PerlIO_close(f); | |
5e2ab84b NIS |
4363 | } |
4364 | ||
94a175e1 | 4365 | IV |
f62ce20a | 4366 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4367 | { |
14a5cf38 | 4368 | /* |
71200d45 | 4369 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4370 | */ |
4371 | PerlIO_flush(f); | |
4372 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4373 | } |
4374 | ||
4375 | ||
4376 | IV | |
f62ce20a | 4377 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4378 | { |
dcda55fc | 4379 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4380 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4381 | Safefree(b->buf); |
14a5cf38 JH |
4382 | b->buf = NULL; |
4383 | } | |
4384 | PerlIO_pop(aTHX_ f); | |
4385 | return 0; | |
5e2ab84b NIS |
4386 | } |
4387 | ||
4388 | void | |
f62ce20a | 4389 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4390 | { |
14a5cf38 JH |
4391 | if (cnt <= 0) { |
4392 | PerlIO_flush(f); | |
4393 | } | |
4394 | else { | |
f62ce20a | 4395 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4396 | } |
5e2ab84b NIS |
4397 | } |
4398 | ||
4399 | IV | |
2dc2558e | 4400 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4401 | { |
de009b76 | 4402 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4403 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4404 | /* |
71200d45 NIS |
4405 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4406 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4407 | */ |
4408 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4409 | (PerlIOBase(PerlIONext(f))-> | |
4410 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4411 | return code; | |
5e2ab84b NIS |
4412 | } |
4413 | ||
4414 | SSize_t | |
f62ce20a | 4415 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4416 | { |
14a5cf38 JH |
4417 | SSize_t avail = PerlIO_get_cnt(f); |
4418 | SSize_t got = 0; | |
94e529cc | 4419 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4420 | avail = count; |
4421 | if (avail > 0) | |
f62ce20a | 4422 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4423 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4424 | const SSize_t more = |
14a5cf38 JH |
4425 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4426 | if (more >= 0 || got == 0) | |
4427 | got += more; | |
4428 | } | |
4429 | return got; | |
5e2ab84b NIS |
4430 | } |
4431 | ||
27da23d5 | 4432 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4433 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4434 | "pending", |
4435 | sizeof(PerlIOBuf), | |
86e05cf2 | 4436 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4437 | PerlIOPending_pushed, |
44798d05 | 4438 | PerlIOBuf_popped, |
14a5cf38 | 4439 | NULL, |
86e05cf2 | 4440 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4441 | NULL, |
4442 | PerlIOBase_fileno, | |
71200d45 | 4443 | PerlIOBuf_dup, |
14a5cf38 JH |
4444 | PerlIOPending_read, |
4445 | PerlIOBuf_unread, | |
4446 | PerlIOBuf_write, | |
4447 | PerlIOPending_seek, | |
4448 | PerlIOBuf_tell, | |
4449 | PerlIOPending_close, | |
4450 | PerlIOPending_flush, | |
4451 | PerlIOPending_fill, | |
4452 | PerlIOBase_eof, | |
4453 | PerlIOBase_error, | |
4454 | PerlIOBase_clearerr, | |
4455 | PerlIOBase_setlinebuf, | |
4456 | PerlIOBuf_get_base, | |
4457 | PerlIOBuf_bufsiz, | |
4458 | PerlIOBuf_get_ptr, | |
4459 | PerlIOBuf_get_cnt, | |
4460 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4461 | }; |
4462 | ||
4463 | ||
4464 | ||
4465 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4466 | /* |
4467 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4468 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4469 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4470 | * |
4471 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4472 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4473 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4474 | * that it ends at c->nl; these two cases can be distinguished by | |
4475 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4476 | * _unread() and _flush() calls. | |
4477 | * It only matters for read operations. | |
66ecd56b NIS |
4478 | */ |
4479 | ||
14a5cf38 | 4480 | typedef struct { |
22569500 NIS |
4481 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4482 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4483 | * buffer */ |
99efab12 NIS |
4484 | } PerlIOCrlf; |
4485 | ||
ff1e3883 JD |
4486 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4487 | * Otherwise the :crlf layer would always revert back to | |
4488 | * raw mode. | |
4489 | */ | |
4490 | static void | |
4491 | S_inherit_utf8_flag(PerlIO *f) | |
4492 | { | |
4493 | PerlIO *g = PerlIONext(f); | |
4494 | if (PerlIOValid(g)) { | |
4495 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4496 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4497 | } | |
4498 | } | |
4499 | } | |
4500 | ||
f5b9d040 | 4501 | IV |
2dc2558e | 4502 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4503 | { |
14a5cf38 JH |
4504 | IV code; |
4505 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4506 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4507 | #if 0 |
e17bc05a | 4508 | DEBUG_i( |
14a5cf38 | 4509 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4510 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4511 | PerlIOBase(f)->flags); |
e17bc05a | 4512 | ); |
5e2ab84b | 4513 | #endif |
8229d19f | 4514 | { |
5da08ab0 LT |
4515 | /* If the old top layer is a CRLF layer, reactivate it (if |
4516 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4517 | PerlIO *g = PerlIONext(f); |
7826b36f | 4518 | if (PerlIOValid(g)) { |
8229d19f JH |
4519 | PerlIOl *b = PerlIOBase(g); |
4520 | if (b && b->tab == &PerlIO_crlf) { | |
4521 | if (!(b->flags & PERLIO_F_CRLF)) | |
4522 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4523 | S_inherit_utf8_flag(g); |
8229d19f JH |
4524 | PerlIO_pop(aTHX_ f); |
4525 | return code; | |
7826b36f | 4526 | } |
8229d19f JH |
4527 | } |
4528 | } | |
ff1e3883 | 4529 | S_inherit_utf8_flag(f); |
14a5cf38 | 4530 | return code; |
f5b9d040 NIS |
4531 | } |
4532 | ||
4533 | ||
99efab12 | 4534 | SSize_t |
f62ce20a | 4535 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4536 | { |
dcda55fc | 4537 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4538 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4539 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4540 | c->nl = NULL; |
4541 | } | |
4542 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4543 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4544 | else { |
4545 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4546 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4547 | SSize_t unread = 0; | |
4548 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4549 | PerlIO_flush(f); | |
4550 | if (!b->buf) | |
4551 | PerlIO_get_base(f); | |
4552 | if (b->buf) { | |
4553 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4554 | b->end = b->ptr = b->buf + b->bufsiz; | |
4555 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4556 | b->posn -= b->bufsiz; | |
4557 | } | |
4558 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4559 | const int ch = *--buf; |
14a5cf38 JH |
4560 | if (ch == '\n') { |
4561 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4562 | *--(b->ptr) = NATIVE_0xa; |
4563 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4564 | unread++; |
4565 | count--; | |
4566 | } | |
4567 | else { | |
93c2c2ec | 4568 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4569 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4570 | '\r' */ | |
93c2c2ec IZ |
4571 | unread++; |
4572 | count--; | |
14a5cf38 JH |
4573 | } |
4574 | } | |
4575 | else { | |
4576 | *--(b->ptr) = ch; | |
4577 | unread++; | |
4578 | count--; | |
4579 | } | |
4580 | } | |
4581 | } | |
ec1da995 LT |
4582 | if (count > 0) |
4583 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4584 | return unread; |
4585 | } | |
99efab12 NIS |
4586 | } |
4587 | ||
93c2c2ec | 4588 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4589 | SSize_t |
f62ce20a | 4590 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4591 | { |
dcda55fc | 4592 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4593 | if (!b->buf) |
4594 | PerlIO_get_base(f); | |
4595 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4596 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4597 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4598 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4599 | scan: |
76e6dc3a | 4600 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4601 | nl++; |
76e6dc3a | 4602 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4603 | test: |
4604 | if (nl + 1 < b->end) { | |
76e6dc3a | 4605 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4606 | *nl = '\n'; |
4607 | c->nl = nl; | |
4608 | } | |
4609 | else { | |
4610 | /* | |
71200d45 | 4611 | * Not CR,LF but just CR |
14a5cf38 JH |
4612 | */ |
4613 | nl++; | |
4614 | goto scan; | |
4615 | } | |
4616 | } | |
4617 | else { | |
4618 | /* | |
71200d45 | 4619 | * Blast - found CR as last char in buffer |
14a5cf38 | 4620 | */ |
e87a358a | 4621 | |
14a5cf38 JH |
4622 | if (b->ptr < nl) { |
4623 | /* | |
4624 | * They may not care, defer work as long as | |
71200d45 | 4625 | * possible |
14a5cf38 | 4626 | */ |
a0d1d361 | 4627 | c->nl = nl; |
14a5cf38 JH |
4628 | return (nl - b->ptr); |
4629 | } | |
4630 | else { | |
4631 | int code; | |
22569500 | 4632 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4633 | * flush() is concerned */ |
22569500 | 4634 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4635 | /* Note as we have moved buf up flush's |
4636 | posn += ptr-buf | |
4637 | will naturally make posn point at CR | |
4638 | */ | |
22569500 NIS |
4639 | b->bufsiz--; /* Buffer is thus smaller */ |
4640 | code = PerlIO_fill(f); /* Fetch some more */ | |
4641 | b->bufsiz++; /* Restore size for next time */ | |
4642 | b->buf--; /* Point at space */ | |
4643 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4644 | * off */ |
76e6dc3a | 4645 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4646 | if (code == 0) |
22569500 | 4647 | goto test; /* fill() call worked */ |
14a5cf38 | 4648 | /* |
71200d45 | 4649 | * CR at EOF - just fall through |
14a5cf38 | 4650 | */ |
a0d1d361 | 4651 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4652 | } |
4653 | } | |
4654 | } | |
4655 | } | |
4656 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4657 | } | |
4658 | return 0; | |
99efab12 NIS |
4659 | } |
4660 | ||
4661 | void | |
f62ce20a | 4662 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4663 | { |
dcda55fc AL |
4664 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4665 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4666 | if (!b->buf) |
4667 | PerlIO_get_base(f); | |
4668 | if (!ptr) { | |
a0d1d361 | 4669 | if (c->nl) { |
14a5cf38 | 4670 | ptr = c->nl + 1; |
76e6dc3a | 4671 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4672 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4673 | ptr--; |
4674 | } | |
4675 | } | |
14a5cf38 JH |
4676 | else { |
4677 | ptr = b->end; | |
14a5cf38 JH |
4678 | } |
4679 | ptr -= cnt; | |
4680 | } | |
4681 | else { | |
6f207bd3 | 4682 | NOOP; |
3b4bd3fd | 4683 | #if 0 |
14a5cf38 | 4684 | /* |
71200d45 | 4685 | * Test code - delete when it works ... |
14a5cf38 | 4686 | */ |
3b4bd3fd | 4687 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4688 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4689 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4690 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4691 | chk--; |
22569500 | 4692 | } |
14a5cf38 JH |
4693 | chk -= cnt; |
4694 | ||
a0d1d361 | 4695 | if (ptr != chk ) { |
99ef548b | 4696 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4697 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4698 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4699 | } |
99ef548b | 4700 | #endif |
14a5cf38 JH |
4701 | } |
4702 | if (c->nl) { | |
4703 | if (ptr > c->nl) { | |
4704 | /* | |
71200d45 | 4705 | * They have taken what we lied about |
14a5cf38 | 4706 | */ |
76e6dc3a | 4707 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4708 | c->nl = NULL; |
4709 | ptr++; | |
4710 | } | |
4711 | } | |
4712 | b->ptr = ptr; | |
4713 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4714 | } |
4715 | ||
4716 | SSize_t | |
f62ce20a | 4717 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4718 | { |
14a5cf38 | 4719 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4720 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4721 | else { |
dcda55fc | 4722 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4723 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4724 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4725 | if (!b->buf) |
4726 | PerlIO_get_base(f); | |
4727 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4728 | return 0; | |
4729 | while (buf < ebuf) { | |
dcda55fc | 4730 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4731 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4732 | while (buf < ebuf && b->ptr < eptr) { | |
4733 | if (*buf == '\n') { | |
4734 | if ((b->ptr + 2) > eptr) { | |
4735 | /* | |
71200d45 | 4736 | * Not room for both |
14a5cf38 JH |
4737 | */ |
4738 | PerlIO_flush(f); | |
4739 | break; | |
4740 | } | |
4741 | else { | |
76e6dc3a KW |
4742 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4743 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4744 | buf++; |
4745 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4746 | PerlIO_flush(f); | |
4747 | break; | |
4748 | } | |
4749 | } | |
4750 | } | |
4751 | else { | |
dcda55fc | 4752 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4753 | } |
4754 | if (b->ptr >= eptr) { | |
4755 | PerlIO_flush(f); | |
4756 | break; | |
4757 | } | |
4758 | } | |
4759 | } | |
4760 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4761 | PerlIO_flush(f); | |
4762 | return (buf - (STDCHAR *) vbuf); | |
4763 | } | |
99efab12 NIS |
4764 | } |
4765 | ||
4766 | IV | |
f62ce20a | 4767 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4768 | { |
dcda55fc | 4769 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4770 | if (c->nl) { |
76e6dc3a | 4771 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4772 | c->nl = NULL; |
4773 | } | |
f62ce20a | 4774 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4775 | } |
4776 | ||
86e05cf2 NIS |
4777 | IV |
4778 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4779 | { | |
4780 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4781 | /* In text mode - flush any pending stuff and flip it */ | |
4782 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4783 | #ifndef PERLIO_USING_CRLF | |
4784 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4785 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4786 | #endif |
4787 | } | |
4788 | return 0; | |
4789 | } | |
4790 | ||
27da23d5 | 4791 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4792 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4793 | "crlf", |
4794 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4795 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4796 | PerlIOCrlf_pushed, |
44798d05 | 4797 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4798 | PerlIOBuf_open, |
86e05cf2 | 4799 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4800 | NULL, |
4801 | PerlIOBase_fileno, | |
71200d45 | 4802 | PerlIOBuf_dup, |
de009b76 | 4803 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4804 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4805 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4806 | PerlIOBuf_seek, |
4807 | PerlIOBuf_tell, | |
4808 | PerlIOBuf_close, | |
4809 | PerlIOCrlf_flush, | |
4810 | PerlIOBuf_fill, | |
4811 | PerlIOBase_eof, | |
4812 | PerlIOBase_error, | |
4813 | PerlIOBase_clearerr, | |
4814 | PerlIOBase_setlinebuf, | |
4815 | PerlIOBuf_get_base, | |
4816 | PerlIOBuf_bufsiz, | |
4817 | PerlIOBuf_get_ptr, | |
4818 | PerlIOCrlf_get_cnt, | |
4819 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4820 | }; |
4821 | ||
9e353e3b | 4822 | PerlIO * |
e87a358a | 4823 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4824 | { |
a1ea730d | 4825 | if (!PL_perlio) { |
14a5cf38 JH |
4826 | PerlIO_stdstreams(aTHX); |
4827 | } | |
303f2dc3 | 4828 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4829 | } |
4830 | ||
9e353e3b | 4831 | PerlIO * |
e87a358a | 4832 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4833 | { |
a1ea730d | 4834 | if (!PL_perlio) { |
14a5cf38 JH |
4835 | PerlIO_stdstreams(aTHX); |
4836 | } | |
303f2dc3 | 4837 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4838 | } |
4839 | ||
9e353e3b | 4840 | PerlIO * |
e87a358a | 4841 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4842 | { |
a1ea730d | 4843 | if (!PL_perlio) { |
14a5cf38 JH |
4844 | PerlIO_stdstreams(aTHX); |
4845 | } | |
303f2dc3 | 4846 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4847 | } |
4848 | ||
4849 | /*--------------------------------------------------------------------------------------*/ | |
4850 | ||
9e353e3b NIS |
4851 | char * |
4852 | PerlIO_getname(PerlIO *f, char *buf) | |
4853 | { | |
a15cef0c | 4854 | #ifdef VMS |
dbf7dff6 | 4855 | dTHX; |
73d840c0 | 4856 | char *name = NULL; |
7659f319 | 4857 | bool exported = FALSE; |
14a5cf38 | 4858 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4859 | if (!stdio) { |
4860 | stdio = PerlIO_exportFILE(f,0); | |
4861 | exported = TRUE; | |
4862 | } | |
4863 | if (stdio) { | |
14a5cf38 | 4864 | name = fgetname(stdio, buf); |
7659f319 CB |
4865 | if (exported) PerlIO_releaseFILE(f,stdio); |
4866 | } | |
73d840c0 | 4867 | return name; |
a15cef0c | 4868 | #else |
8772537c AL |
4869 | PERL_UNUSED_ARG(f); |
4870 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4871 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4872 | return NULL; |
a15cef0c | 4873 | #endif |
9e353e3b NIS |
4874 | } |
4875 | ||
4876 | ||
4877 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4878 | /* |
4879 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4880 | * terms of above |
14a5cf38 | 4881 | */ |
9e353e3b | 4882 | |
e87a358a NIS |
4883 | #undef PerlIO_fdopen |
4884 | PerlIO * | |
4885 | PerlIO_fdopen(int fd, const char *mode) | |
4886 | { | |
4887 | dTHX; | |
bd61b366 | 4888 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4889 | } |
4890 | ||
4891 | #undef PerlIO_open | |
4892 | PerlIO * | |
4893 | PerlIO_open(const char *path, const char *mode) | |
4894 | { | |
4895 | dTHX; | |
42d9b98d | 4896 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4897 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4898 | } |
4899 | ||
4900 | #undef Perlio_reopen | |
4901 | PerlIO * | |
4902 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4903 | { | |
4904 | dTHX; | |
42d9b98d | 4905 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4906 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4907 | } |
4908 | ||
9e353e3b | 4909 | #undef PerlIO_getc |
6f9d8c32 | 4910 | int |
9e353e3b | 4911 | PerlIO_getc(PerlIO *f) |
760ac839 | 4912 | { |
e87a358a | 4913 | dTHX; |
14a5cf38 | 4914 | STDCHAR buf[1]; |
de009b76 | 4915 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4916 | return (unsigned char) buf[0]; |
4917 | } | |
4918 | return EOF; | |
313ca112 NIS |
4919 | } |
4920 | ||
4921 | #undef PerlIO_ungetc | |
4922 | int | |
4923 | PerlIO_ungetc(PerlIO *f, int ch) | |
4924 | { | |
e87a358a | 4925 | dTHX; |
14a5cf38 JH |
4926 | if (ch != EOF) { |
4927 | STDCHAR buf = ch; | |
4928 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4929 | return ch; | |
4930 | } | |
4931 | return EOF; | |
760ac839 LW |
4932 | } |
4933 | ||
9e353e3b NIS |
4934 | #undef PerlIO_putc |
4935 | int | |
4936 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4937 | { |
e87a358a | 4938 | dTHX; |
14a5cf38 JH |
4939 | STDCHAR buf = ch; |
4940 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4941 | } |
4942 | ||
9e353e3b | 4943 | #undef PerlIO_puts |
760ac839 | 4944 | int |
9e353e3b | 4945 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4946 | { |
e87a358a | 4947 | dTHX; |
dcda55fc | 4948 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4949 | } |
4950 | ||
4951 | #undef PerlIO_rewind | |
4952 | void | |
c78749f2 | 4953 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4954 | { |
e87a358a | 4955 | dTHX; |
14a5cf38 JH |
4956 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4957 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4958 | } |
4959 | ||
4960 | #undef PerlIO_vprintf | |
4961 | int | |
4962 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4963 | { | |
14a5cf38 | 4964 | dTHX; |
53ce71d3 | 4965 | SV * sv; |
b83604b4 | 4966 | const char *s; |
14a5cf38 JH |
4967 | STRLEN len; |
4968 | SSize_t wrote; | |
2cc61e15 | 4969 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4970 | va_list apc; |
4971 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4972 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 4973 | va_end(apc); |
2cc61e15 | 4974 | #else |
53ce71d3 | 4975 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4976 | #endif |
b83604b4 | 4977 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4978 | wrote = PerlIO_write(f, s, len); |
4979 | SvREFCNT_dec(sv); | |
4980 | return wrote; | |
760ac839 LW |
4981 | } |
4982 | ||
4983 | #undef PerlIO_printf | |
6f9d8c32 | 4984 | int |
14a5cf38 | 4985 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4986 | { |
14a5cf38 JH |
4987 | va_list ap; |
4988 | int result; | |
4989 | va_start(ap, fmt); | |
4990 | result = PerlIO_vprintf(f, fmt, ap); | |
4991 | va_end(ap); | |
4992 | return result; | |
760ac839 LW |
4993 | } |
4994 | ||
4995 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4996 | int |
14a5cf38 | 4997 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4998 | { |
e87a358a | 4999 | dTHX; |
14a5cf38 JH |
5000 | va_list ap; |
5001 | int result; | |
5002 | va_start(ap, fmt); | |
5003 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5004 | va_end(ap); | |
5005 | return result; | |
760ac839 LW |
5006 | } |
5007 | ||
5008 | #undef PerlIO_tmpfile | |
5009 | PerlIO * | |
c78749f2 | 5010 | PerlIO_tmpfile(void) |
760ac839 | 5011 | { |
dbf7dff6 | 5012 | #ifndef WIN32 |
2941a2e1 | 5013 | dTHX; |
dbf7dff6 | 5014 | #endif |
2941a2e1 | 5015 | PerlIO *f = NULL; |
2941a2e1 | 5016 | #ifdef WIN32 |
de009b76 | 5017 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5018 | if (fd >= 0) |
5019 | f = PerlIO_fdopen(fd, "w+b"); | |
5020 | #else /* WIN32 */ | |
460c8493 | 5021 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5022 | int fd = -1; |
5023 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 5024 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 5025 | SV * sv = NULL; |
e57270be | 5026 | int old_umask = umask(0177); |
2941a2e1 JH |
5027 | /* |
5028 | * I have no idea how portable mkstemp() is ... NI-S | |
5029 | */ | |
7299ca58 | 5030 | if (tmpdir && *tmpdir) { |
0b99e986 | 5031 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5032 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5033 | sv_catpv(sv, tempname + 4); |
5034 | fd = mkstemp(SvPVX(sv)); | |
5035 | } | |
5036 | if (fd < 0) { | |
e40f8e80 | 5037 | SvREFCNT_dec(sv); |
7299ca58 | 5038 | sv = NULL; |
0b99e986 RGS |
5039 | /* else we try /tmp */ |
5040 | fd = mkstemp(tempname); | |
5041 | } | |
b7561fc9 BF |
5042 | if (fd < 0) { |
5043 | /* Try cwd */ | |
5044 | sv = newSVpvs("."); | |
5045 | sv_catpv(sv, tempname + 4); | |
5046 | fd = mkstemp(SvPVX(sv)); | |
5047 | } | |
60f7fc1e | 5048 | umask(old_umask); |
2941a2e1 JH |
5049 | if (fd >= 0) { |
5050 | f = PerlIO_fdopen(fd, "w+"); | |
5051 | if (f) | |
5052 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5053 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5054 | } |
ef8d46e8 | 5055 | SvREFCNT_dec(sv); |
2941a2e1 | 5056 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5057 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5058 | |
085e731f CB |
5059 | if (stdio) |
5060 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5061 | ||
2941a2e1 JH |
5062 | # endif /* else HAS_MKSTEMP */ |
5063 | #endif /* else WIN32 */ | |
5064 | return f; | |
760ac839 LW |
5065 | } |
5066 | ||
0ea86a10 FC |
5067 | void |
5068 | Perl_PerlIO_save_errno(pTHX_ PerlIO *f) | |
5069 | { | |
5070 | if (!PerlIOValid(f)) | |
5071 | return; | |
5072 | PerlIOBase(f)->err = errno; | |
5073 | #ifdef VMS | |
5074 | PerlIOBase(f)->os_err = vaxc$errno; | |
5075 | #elif defined(OS2) | |
5076 | PerlIOBase(f)->os_err = Perl_rc; | |
5077 | #elif defined(WIN32) | |
5078 | PerlIOBase(f)->os_err = GetLastError(); | |
5079 | #endif | |
5080 | } | |
5081 | ||
5082 | void | |
5083 | Perl_PerlIO_restore_errno(pTHX_ PerlIO *f) | |
5084 | { | |
5085 | if (!PerlIOValid(f)) | |
5086 | return; | |
5087 | SETERRNO(PerlIOBase(f)->err, PerlIOBase(f)->os_err); | |
5088 | #ifdef OS2 | |
5089 | Perl_rc = PerlIOBase(f)->os_err); | |
5090 | #elif defined(WIN32) | |
5091 | SetLastError(PerlIOBase(f)->os_err); | |
5092 | #endif | |
5093 | } | |
5094 | ||
6f9d8c32 NIS |
5095 | #undef HAS_FSETPOS |
5096 | #undef HAS_FGETPOS | |
5097 | ||
760ac839 | 5098 | |
9e353e3b | 5099 | /*======================================================================================*/ |
14a5cf38 | 5100 | /* |
71200d45 NIS |
5101 | * Now some functions in terms of above which may be needed even if we are |
5102 | * not in true PerlIO mode | |
9e353e3b | 5103 | */ |
188f0c84 YO |
5104 | const char * |
5105 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5106 | { | |
8b850bd5 NC |
5107 | const char *direction = NULL; |
5108 | SV *layers; | |
188f0c84 YO |
5109 | /* |
5110 | * Need to supply default layer info from open.pm | |
5111 | */ | |
8b850bd5 NC |
5112 | |
5113 | if (!PL_curcop) | |
5114 | return NULL; | |
5115 | ||
5116 | if (mode && mode[0] != 'r') { | |
5117 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5118 | direction = "open>"; | |
5119 | } else { | |
5120 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5121 | direction = "open<"; | |
188f0c84 | 5122 | } |
8b850bd5 NC |
5123 | if (!direction) |
5124 | return NULL; | |
5125 | ||
20439bc7 | 5126 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5127 | |
5128 | assert(layers); | |
5129 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5130 | } |
5131 | ||
9e353e3b | 5132 | |
760ac839 LW |
5133 | #ifndef HAS_FSETPOS |
5134 | #undef PerlIO_setpos | |
5135 | int | |
766a733e | 5136 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5137 | { |
14a5cf38 | 5138 | if (SvOK(pos)) { |
e1a83e70 DD |
5139 | if (f) { |
5140 | dTHX; | |
5141 | STRLEN len; | |
5142 | const Off_t * const posn = (Off_t *) SvPV(pos, len); | |
5143 | if(len == sizeof(Off_t)) | |
5144 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5145 | } | |
14a5cf38 | 5146 | } |
93189314 | 5147 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5148 | return -1; |
760ac839 | 5149 | } |
c411622e | 5150 | #else |
c411622e | 5151 | #undef PerlIO_setpos |
5152 | int | |
766a733e | 5153 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5154 | { |
14a5cf38 | 5155 | if (SvOK(pos)) { |
e1a83e70 DD |
5156 | if (f) { |
5157 | dTHX; | |
5158 | STRLEN len; | |
5159 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); | |
5160 | if(len == sizeof(Fpos_t)) | |
2d4389e4 | 5161 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
e1a83e70 | 5162 | return fsetpos64(f, fpos); |
d9b3e12d | 5163 | #else |
e1a83e70 | 5164 | return fsetpos(f, fpos); |
d9b3e12d | 5165 | #endif |
14a5cf38 | 5166 | } |
766a733e | 5167 | } |
93189314 | 5168 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5169 | return -1; |
c411622e | 5170 | } |
5171 | #endif | |
760ac839 LW |
5172 | |
5173 | #ifndef HAS_FGETPOS | |
5174 | #undef PerlIO_getpos | |
5175 | int | |
766a733e | 5176 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5177 | { |
14a5cf38 JH |
5178 | dTHX; |
5179 | Off_t posn = PerlIO_tell(f); | |
5180 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5181 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5182 | } |
c411622e | 5183 | #else |
c411622e | 5184 | #undef PerlIO_getpos |
5185 | int | |
766a733e | 5186 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5187 | { |
14a5cf38 JH |
5188 | dTHX; |
5189 | Fpos_t fpos; | |
5190 | int code; | |
2d4389e4 | 5191 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5192 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5193 | #else |
14a5cf38 | 5194 | code = fgetpos(f, &fpos); |
d9b3e12d | 5195 | #endif |
14a5cf38 JH |
5196 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5197 | return code; | |
c411622e | 5198 | } |
5199 | #endif | |
760ac839 | 5200 | |
97cb92d6 | 5201 | #if !defined(HAS_VPRINTF) |
760ac839 LW |
5202 | |
5203 | int | |
c78749f2 | 5204 | vprintf(char *pat, char *args) |
662a7e3f CS |
5205 | { |
5206 | _doprnt(pat, args, stdout); | |
22569500 | 5207 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5208 | * value */ |
662a7e3f CS |
5209 | } |
5210 | ||
5211 | int | |
c78749f2 | 5212 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5213 | { |
5214 | _doprnt(pat, args, fd); | |
22569500 | 5215 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5216 | * value */ |
760ac839 LW |
5217 | } |
5218 | ||
5219 | #endif | |
5220 | ||
db6e00bd DD |
5221 | /* print a failure format string message to stderr and fail exit the process |
5222 | using only libc without depending on any perl data structures being | |
5223 | initialized. | |
5224 | */ | |
5225 | ||
5226 | void | |
5227 | Perl_noperl_die(const char* pat, ...) | |
5228 | { | |
5229 | va_list(arglist); | |
5230 | PERL_ARGS_ASSERT_NOPERL_DIE; | |
5231 | va_start(arglist, pat); | |
5232 | vfprintf(stderr, pat, arglist); | |
5233 | va_end(arglist); | |
5234 | exit(1); | |
5235 | } | |
5236 | ||
9cfa90c0 | 5237 | /* |
14d04a33 | 5238 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5239 | */ |