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; | |
e17bc05a TC |
353 | |
354 | if (!DEBUG_i_TEST) | |
355 | return; | |
356 | ||
d732c5e5 JH |
357 | va_start(ap, fmt); |
358 | ||
582588d2 | 359 | if (!PL_perlio_debug_fd) { |
284167a5 | 360 | if (!TAINTING_get && |
985213f2 AB |
361 | PerlProc_getuid() == PerlProc_geteuid() && |
362 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
363 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
364 | if (s && *s) | |
365 | PL_perlio_debug_fd | |
366 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
367 | else | |
64320867 | 368 | PL_perlio_debug_fd = PerlLIO_dup(2); /* stderr */ |
582588d2 | 369 | } else { |
64320867 TC |
370 | /* tainting or set*id, so ignore the environment and send the |
371 | debug output to stderr, like other -D switches. */ | |
372 | PL_perlio_debug_fd = PerlLIO_dup(2); /* stderr */ | |
582588d2 | 373 | } |
14a5cf38 | 374 | } |
27da23d5 | 375 | if (PL_perlio_debug_fd > 0) { |
70ace5da | 376 | #ifdef USE_ITHREADS |
dcda55fc | 377 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
378 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
379 | char buffer[1024]; | |
1208b3dd JH |
380 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
381 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
b469f1e0 | 382 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2)); |
70ace5da | 383 | #else |
dcda55fc AL |
384 | const char *s = CopFILE(PL_curcop); |
385 | STRLEN len; | |
550e2ce0 NC |
386 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
387 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
388 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
389 | ||
b83604b4 | 390 | s = SvPV_const(sv, len); |
b469f1e0 | 391 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len)); |
14a5cf38 | 392 | SvREFCNT_dec(sv); |
70ace5da | 393 | #endif |
14a5cf38 JH |
394 | } |
395 | va_end(ap); | |
6f9d8c32 NIS |
396 | } |
397 | ||
9e353e3b NIS |
398 | /*--------------------------------------------------------------------------------------*/ |
399 | ||
14a5cf38 | 400 | /* |
71200d45 | 401 | * Inner level routines |
14a5cf38 | 402 | */ |
9e353e3b | 403 | |
16865ff7 DM |
404 | /* check that the head field of each layer points back to the head */ |
405 | ||
406 | #ifdef DEBUGGING | |
407 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
408 | static void | |
409 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
410 | { | |
411 | PerlIOl *head, *p; | |
412 | int seen = 0; | |
dd791c72 JH |
413 | #ifndef PERL_IMPLICIT_SYS |
414 | PERL_UNUSED_CONTEXT; | |
415 | #endif | |
16865ff7 DM |
416 | if (!PerlIOValid(f)) |
417 | return; | |
418 | p = head = PerlIOBase(f)->head; | |
419 | assert(p); | |
420 | do { | |
421 | assert(p->head == head); | |
422 | if (p == (PerlIOl*)f) | |
423 | seen = 1; | |
424 | p = p->next; | |
425 | } while (p); | |
426 | assert(seen); | |
427 | } | |
428 | #else | |
429 | # define VERIFY_HEAD(f) | |
430 | #endif | |
431 | ||
432 | ||
14a5cf38 | 433 | /* |
71200d45 | 434 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 435 | */ |
05d1247b | 436 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 437 | |
8995e67d DM |
438 | static void |
439 | PerlIO_init_table(pTHX) | |
440 | { | |
441 | if (PL_perlio) | |
442 | return; | |
443 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
444 | } | |
445 | ||
446 | ||
447 | ||
760ac839 | 448 | PerlIO * |
5f1a76d0 | 449 | PerlIO_allocate(pTHX) |
6f9d8c32 | 450 | { |
14a5cf38 | 451 | /* |
71200d45 | 452 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 453 | */ |
303f2dc3 DM |
454 | PerlIOl **last; |
455 | PerlIOl *f; | |
a1ea730d | 456 | last = &PL_perlio; |
14a5cf38 JH |
457 | while ((f = *last)) { |
458 | int i; | |
303f2dc3 | 459 | last = (PerlIOl **) (f); |
14a5cf38 | 460 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 461 | if (!((++f)->next)) { |
4e0ef342 | 462 | goto good_exit; |
14a5cf38 JH |
463 | } |
464 | } | |
465 | } | |
303f2dc3 | 466 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
467 | if (!f) { |
468 | return NULL; | |
469 | } | |
303f2dc3 | 470 | *last = (PerlIOl*) f++; |
4e0ef342 DD |
471 | |
472 | good_exit: | |
abf9167d | 473 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 474 | f->tab = NULL; |
16865ff7 | 475 | f->head = f; |
303f2dc3 | 476 | return (PerlIO*) f; |
05d1247b NIS |
477 | } |
478 | ||
a1ea730d NIS |
479 | #undef PerlIO_fdupopen |
480 | PerlIO * | |
ecdeb87c | 481 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 482 | { |
04892f78 | 483 | if (PerlIOValid(f)) { |
de009b76 | 484 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
e17bc05a | 485 | DEBUG_i( PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param) ); |
210e727c JH |
486 | if (tab && tab->Dup) |
487 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
488 | else { |
489 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
490 | } | |
a1ea730d | 491 | } |
210e727c JH |
492 | else |
493 | SETERRNO(EBADF, SS_IVCHAN); | |
494 | ||
495 | return NULL; | |
a1ea730d NIS |
496 | } |
497 | ||
498 | void | |
303f2dc3 | 499 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 500 | { |
303f2dc3 | 501 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
502 | if (table) { |
503 | int i; | |
303f2dc3 | 504 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 505 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
506 | PerlIOl * const f = table + i; |
507 | if (f->next) { | |
508 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
509 | } |
510 | } | |
3a1ee7e8 | 511 | Safefree(table); |
14a5cf38 | 512 | *tablep = NULL; |
05d1247b | 513 | } |
05d1247b NIS |
514 | } |
515 | ||
fcf2db38 NIS |
516 | |
517 | PerlIO_list_t * | |
3a1ee7e8 | 518 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 519 | { |
14a5cf38 | 520 | PerlIO_list_t *list; |
96a5add6 | 521 | PERL_UNUSED_CONTEXT; |
a02a5408 | 522 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
523 | list->refcnt = 1; |
524 | return list; | |
fcf2db38 NIS |
525 | } |
526 | ||
527 | void | |
3a1ee7e8 | 528 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 529 | { |
14a5cf38 JH |
530 | if (list) { |
531 | if (--list->refcnt == 0) { | |
532 | if (list->array) { | |
14a5cf38 | 533 | IV i; |
ef8d46e8 VP |
534 | for (i = 0; i < list->cur; i++) |
535 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
536 | Safefree(list->array); |
537 | } | |
538 | Safefree(list); | |
539 | } | |
540 | } | |
fcf2db38 NIS |
541 | } |
542 | ||
543 | void | |
3a1ee7e8 | 544 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 545 | { |
334e202e | 546 | PerlIO_pair_t *p; |
b37c2d43 AL |
547 | PERL_UNUSED_CONTEXT; |
548 | ||
14a5cf38 JH |
549 | if (list->cur >= list->len) { |
550 | list->len += 8; | |
551 | if (list->array) | |
552 | Renew(list->array, list->len, PerlIO_pair_t); | |
553 | else | |
a02a5408 | 554 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
555 | } |
556 | p = &(list->array[list->cur++]); | |
557 | p->funcs = funcs; | |
558 | if ((p->arg = arg)) { | |
f84c484e | 559 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 560 | } |
fcf2db38 NIS |
561 | } |
562 | ||
3a1ee7e8 NIS |
563 | PerlIO_list_t * |
564 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
565 | { | |
b37c2d43 | 566 | PerlIO_list_t *list = NULL; |
694c95cf JH |
567 | if (proto) { |
568 | int i; | |
569 | list = PerlIO_list_alloc(aTHX); | |
570 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 571 | SV *arg = proto->array[i].arg; |
24d147a6 | 572 | #ifdef USE_ITHREADS |
a951d81d BL |
573 | if (arg && param) |
574 | arg = sv_dup(arg, param); | |
575 | #else | |
576 | PERL_UNUSED_ARG(param); | |
577 | #endif | |
694c95cf JH |
578 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
579 | } | |
3a1ee7e8 NIS |
580 | } |
581 | return list; | |
582 | } | |
4a4a6116 | 583 | |
05d1247b | 584 | void |
3a1ee7e8 | 585 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 586 | { |
3aaf42a7 | 587 | #ifdef USE_ITHREADS |
303f2dc3 DM |
588 | PerlIOl **table = &proto->Iperlio; |
589 | PerlIOl *f; | |
3a1ee7e8 NIS |
590 | PL_perlio = NULL; |
591 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
592 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 593 | PerlIO_init_table(aTHX); |
e17bc05a | 594 | DEBUG_i( PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto) ); |
3a1ee7e8 NIS |
595 | while ((f = *table)) { |
596 | int i; | |
303f2dc3 | 597 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 598 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
599 | if (f->next) { |
600 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
601 | } |
602 | f++; | |
603 | } | |
604 | } | |
1b6737cc | 605 | #else |
a25429c6 | 606 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
607 | PERL_UNUSED_ARG(proto); |
608 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 609 | #endif |
9a6404c5 DM |
610 | } |
611 | ||
612 | void | |
13621cfb NIS |
613 | PerlIO_destruct(pTHX) |
614 | { | |
303f2dc3 DM |
615 | PerlIOl **table = &PL_perlio; |
616 | PerlIOl *f; | |
694c95cf | 617 | #ifdef USE_ITHREADS |
e17bc05a | 618 | DEBUG_i( PerlIO_debug("Destruct %p\n",(void*)aTHX) ); |
694c95cf | 619 | #endif |
14a5cf38 JH |
620 | while ((f = *table)) { |
621 | int i; | |
303f2dc3 | 622 | table = (PerlIOl **) (f++); |
14a5cf38 | 623 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 624 | PerlIO *x = &(f->next); |
dcda55fc | 625 | const PerlIOl *l; |
14a5cf38 | 626 | while ((l = *x)) { |
cc6623a8 | 627 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
e17bc05a | 628 | DEBUG_i( PerlIO_debug("Destruct popping %s\n", l->tab->name) ); |
14a5cf38 JH |
629 | PerlIO_flush(x); |
630 | PerlIO_pop(aTHX_ x); | |
631 | } | |
632 | else { | |
633 | x = PerlIONext(x); | |
634 | } | |
635 | } | |
636 | f++; | |
637 | } | |
638 | } | |
13621cfb NIS |
639 | } |
640 | ||
641 | void | |
a999f61b | 642 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 643 | { |
dcda55fc | 644 | const PerlIOl *l = *f; |
16865ff7 | 645 | VERIFY_HEAD(f); |
14a5cf38 | 646 | if (l) { |
e17bc05a TC |
647 | DEBUG_i( PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
648 | l->tab ? l->tab->name : "(Null)") ); | |
cc6623a8 | 649 | if (l->tab && l->tab->Popped) { |
14a5cf38 JH |
650 | /* |
651 | * If popped returns non-zero do not free its layer structure | |
652 | * it has either done so itself, or it is shared and still in | |
71200d45 | 653 | * use |
14a5cf38 | 654 | */ |
f62ce20a | 655 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
656 | return; |
657 | } | |
abf9167d DM |
658 | if (PerlIO_lockcnt(f)) { |
659 | /* we're in use; defer freeing the structure */ | |
660 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
661 | PerlIOBase(f)->tab = NULL; | |
662 | } | |
663 | else { | |
664 | *f = l->next; | |
665 | Safefree(l); | |
666 | } | |
667 | ||
a8c08ecd | 668 | } |
6f9d8c32 NIS |
669 | } |
670 | ||
39f7a870 JH |
671 | /* Return as an array the stack of layers on a filehandle. Note that |
672 | * the stack is returned top-first in the array, and there are three | |
673 | * times as many array elements as there are layers in the stack: the | |
674 | * first element of a layer triplet is the name, the second one is the | |
675 | * arguments, and the third one is the flags. */ | |
676 | ||
677 | AV * | |
678 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
679 | { | |
dcda55fc | 680 | AV * const av = newAV(); |
39f7a870 | 681 | |
dcda55fc AL |
682 | if (PerlIOValid(f)) { |
683 | PerlIOl *l = PerlIOBase(f); | |
684 | ||
685 | while (l) { | |
92e45a3e NC |
686 | /* There is some collusion in the implementation of |
687 | XS_PerlIO_get_layers - it knows that name and flags are | |
688 | generated as fresh SVs here, and takes advantage of that to | |
689 | "copy" them by taking a reference. If it changes here, it needs | |
690 | to change there too. */ | |
dcda55fc AL |
691 | SV * const name = l->tab && l->tab->name ? |
692 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
693 | SV * const arg = l->tab && l->tab->Getarg ? | |
694 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
695 | av_push(av, name); | |
696 | av_push(av, arg); | |
697 | av_push(av, newSViv((IV)l->flags)); | |
698 | l = l->next; | |
699 | } | |
700 | } | |
39f7a870 | 701 | |
dcda55fc | 702 | return av; |
39f7a870 JH |
703 | } |
704 | ||
9e353e3b | 705 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 706 | /* |
71200d45 | 707 | * XS Interface for perl code |
14a5cf38 | 708 | */ |
9e353e3b | 709 | |
fcf2db38 | 710 | PerlIO_funcs * |
2edd7e44 | 711 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 712 | { |
20b7effb | 713 | |
14a5cf38 JH |
714 | IV i; |
715 | if ((SSize_t) len <= 0) | |
716 | len = strlen(name); | |
3a1ee7e8 | 717 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 718 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
719 | const STRLEN this_len = strlen(f->name); |
720 | if (this_len == len && memEQ(f->name, name, len)) { | |
e17bc05a | 721 | DEBUG_i( PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f) ); |
14a5cf38 JH |
722 | return f; |
723 | } | |
724 | } | |
3a1ee7e8 NIS |
725 | if (load && PL_subname && PL_def_layerlist |
726 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
727 | if (PL_in_load_module) { |
728 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
729 | return NULL; | |
730 | } else { | |
396482e1 | 731 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 732 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 733 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 734 | ENTER; |
4fa7c2bf | 735 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 736 | if (cv) { |
9cfa90c0 | 737 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 738 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 739 | } |
4fa7c2bf | 740 | PL_in_load_module = TRUE; |
d7a09b41 SR |
741 | /* |
742 | * The two SVs are magically freed by load_module | |
743 | */ | |
a0714e2c | 744 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
745 | LEAVE; |
746 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
747 | } | |
14a5cf38 | 748 | } |
e17bc05a | 749 | DEBUG_i( PerlIO_debug("Cannot find %.*s\n", (int) len, name) ); |
14a5cf38 | 750 | return NULL; |
f3862f8b NIS |
751 | } |
752 | ||
2a1bc955 | 753 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
754 | |
755 | static int | |
756 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
757 | { | |
14a5cf38 | 758 | if (SvROK(sv)) { |
159b6efe | 759 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
760 | PerlIO * const ifp = IoIFP(io); |
761 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
762 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
763 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
764 | } |
765 | return 0; | |
b13b2135 NIS |
766 | } |
767 | ||
768 | static int | |
769 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
770 | { | |
14a5cf38 | 771 | if (SvROK(sv)) { |
159b6efe | 772 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
773 | PerlIO * const ifp = IoIFP(io); |
774 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
775 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
776 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
777 | } |
778 | return 0; | |
b13b2135 NIS |
779 | } |
780 | ||
781 | static int | |
782 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
783 | { | |
be2597df | 784 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 785 | return 0; |
b13b2135 NIS |
786 | } |
787 | ||
788 | static int | |
789 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
790 | { | |
be2597df | 791 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 792 | return 0; |
b13b2135 NIS |
793 | } |
794 | ||
795 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
796 | perlio_mg_get, |
797 | perlio_mg_set, | |
22569500 | 798 | NULL, /* len */ |
14a5cf38 JH |
799 | perlio_mg_clear, |
800 | perlio_mg_free | |
b13b2135 NIS |
801 | }; |
802 | ||
15eb3045 | 803 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
804 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
805 | { | |
14a5cf38 | 806 | dXSARGS; |
dcda55fc AL |
807 | SV * const sv = SvRV(ST(1)); |
808 | AV * const av = newAV(); | |
14a5cf38 JH |
809 | MAGIC *mg; |
810 | int count = 0; | |
811 | int i; | |
ad64d0ec | 812 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
813 | SvRMAGICAL_off(sv); |
814 | mg = mg_find(sv, PERL_MAGIC_ext); | |
815 | mg->mg_virtual = &perlio_vtab; | |
816 | mg_magical(sv); | |
be2597df | 817 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
818 | for (i = 2; i < items; i++) { |
819 | STRLEN len; | |
dcda55fc AL |
820 | const char * const name = SvPV_const(ST(i), len); |
821 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 822 | if (layer) { |
b37c2d43 | 823 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
824 | } |
825 | else { | |
826 | ST(count) = ST(i); | |
827 | count++; | |
828 | } | |
829 | } | |
830 | SvREFCNT_dec(av); | |
831 | XSRETURN(count); | |
832 | } | |
833 | ||
b8fda935 | 834 | #endif /* USE_ATTRIBUTES_FOR_PERLIO */ |
2a1bc955 | 835 | |
e3f3bf95 NIS |
836 | SV * |
837 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 838 | { |
da51bb9b | 839 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 840 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 841 | return sv; |
e3f3bf95 NIS |
842 | } |
843 | ||
15eb3045 | 844 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 845 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 846 | { |
486ec47a | 847 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
848 | during loading of layers. |
849 | */ | |
850 | dXSARGS; | |
58c0efa5 | 851 | PERL_UNUSED_ARG(cv); |
5347602a | 852 | PERL_UNUSED_VAR(items); |
e17bc05a TC |
853 | DEBUG_i( |
854 | if (items) | |
855 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))) ); | |
c9bca74a NIS |
856 | XSRETURN(0); |
857 | } | |
858 | ||
15eb3045 | 859 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 860 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 861 | { |
14a5cf38 | 862 | dXSARGS; |
58c0efa5 | 863 | PERL_UNUSED_ARG(cv); |
14a5cf38 JH |
864 | if (items < 2) |
865 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
866 | else { | |
de009b76 | 867 | STRLEN len; |
46c461b5 | 868 | const char * const name = SvPV_const(ST(1), len); |
f814d560 | 869 | const bool load = (items > 2) ? SvTRUE_NN(ST(2)) : 0; |
46c461b5 | 870 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
871 | ST(0) = |
872 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
873 | &PL_sv_undef; | |
874 | XSRETURN(1); | |
875 | } | |
0c4f7ff0 NIS |
876 | } |
877 | ||
e3f3bf95 NIS |
878 | void |
879 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
880 | { | |
3a1ee7e8 NIS |
881 | if (!PL_known_layers) |
882 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 883 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
e17bc05a | 884 | DEBUG_i( PerlIO_debug("define %s %p\n", tab->name, (void*)tab) ); |
f3862f8b NIS |
885 | } |
886 | ||
1141d9f8 | 887 | int |
fcf2db38 | 888 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 889 | { |
14a5cf38 JH |
890 | if (names) { |
891 | const char *s = names; | |
892 | while (*s) { | |
893 | while (isSPACE(*s) || *s == ':') | |
894 | s++; | |
895 | if (*s) { | |
896 | STRLEN llen = 0; | |
897 | const char *e = s; | |
bd61b366 | 898 | const char *as = NULL; |
14a5cf38 JH |
899 | STRLEN alen = 0; |
900 | if (!isIDFIRST(*s)) { | |
901 | /* | |
902 | * Message is consistent with how attribute lists are | |
903 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 904 | * seen as an invalid separator character. |
14a5cf38 | 905 | */ |
de009b76 | 906 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
907 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
908 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
909 | q, *s, q, s); | |
93189314 | 910 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
911 | return -1; |
912 | } | |
913 | do { | |
914 | e++; | |
0eb30aeb | 915 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
916 | llen = e - s; |
917 | if (*e == '(') { | |
918 | int nesting = 1; | |
919 | as = ++e; | |
920 | while (nesting) { | |
921 | switch (*e++) { | |
922 | case ')': | |
923 | if (--nesting == 0) | |
924 | alen = (e - 1) - as; | |
925 | break; | |
926 | case '(': | |
927 | ++nesting; | |
928 | break; | |
929 | case '\\': | |
930 | /* | |
931 | * It's a nul terminated string, not allowed | |
932 | * to \ the terminating null. Anything other | |
71200d45 | 933 | * character is passed over. |
14a5cf38 JH |
934 | */ |
935 | if (*e++) { | |
936 | break; | |
937 | } | |
938 | /* | |
71200d45 | 939 | * Drop through |
14a5cf38 JH |
940 | */ |
941 | case '\0': | |
942 | e--; | |
a2a5de95 NC |
943 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
944 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
945 | (int) (e - s), s); | |
14a5cf38 JH |
946 | return -1; |
947 | default: | |
948 | /* | |
71200d45 | 949 | * boring. |
14a5cf38 JH |
950 | */ |
951 | break; | |
952 | } | |
953 | } | |
954 | } | |
955 | if (e > s) { | |
46c461b5 | 956 | PerlIO_funcs * const layer = |
14a5cf38 JH |
957 | PerlIO_find_layer(aTHX_ s, llen, 1); |
958 | if (layer) { | |
a951d81d BL |
959 | SV *arg = NULL; |
960 | if (as) | |
961 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 962 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 963 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 964 | SvREFCNT_dec(arg); |
14a5cf38 JH |
965 | } |
966 | else { | |
a2a5de95 NC |
967 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
968 | (int) llen, s); | |
14a5cf38 JH |
969 | return -1; |
970 | } | |
971 | } | |
972 | s = e; | |
973 | } | |
974 | } | |
975 | } | |
976 | return 0; | |
1141d9f8 NIS |
977 | } |
978 | ||
dfebf958 | 979 | void |
fcf2db38 | 980 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 981 | { |
27da23d5 | 982 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 983 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 984 | tab = &PerlIO_crlf; |
846be114 | 985 | #else |
6ce75a77 | 986 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 987 | tab = &PerlIO_stdio; |
846be114 | 988 | #endif |
e17bc05a | 989 | DEBUG_i( PerlIO_debug("Pushing %s\n", tab->name) ); |
0987d6f3 | 990 | PerlIO_list_push(aTHX_ av, (PerlIO_funcs *)tab, &PL_sv_undef); |
dfebf958 NIS |
991 | } |
992 | ||
e3f3bf95 | 993 | SV * |
14a5cf38 | 994 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 995 | { |
14a5cf38 | 996 | return av->array[n].arg; |
e3f3bf95 NIS |
997 | } |
998 | ||
f3862f8b | 999 | PerlIO_funcs * |
14a5cf38 | 1000 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1001 | { |
14a5cf38 | 1002 | if (n >= 0 && n < av->cur) { |
e17bc05a TC |
1003 | DEBUG_i( PerlIO_debug("Layer %" IVdf " is %s\n", n, |
1004 | av->array[n].funcs->name) ); | |
14a5cf38 JH |
1005 | return av->array[n].funcs; |
1006 | } | |
1007 | if (!def) | |
1008 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1009 | return def; | |
e3f3bf95 NIS |
1010 | } |
1011 | ||
4ec2216f NIS |
1012 | IV |
1013 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1014 | { | |
8772537c AL |
1015 | PERL_UNUSED_ARG(mode); |
1016 | PERL_UNUSED_ARG(arg); | |
1017 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1018 | if (PerlIOValid(f)) { |
1019 | PerlIO_flush(f); | |
1020 | PerlIO_pop(aTHX_ f); | |
1021 | return 0; | |
1022 | } | |
1023 | return -1; | |
1024 | } | |
1025 | ||
27da23d5 | 1026 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1027 | sizeof(PerlIO_funcs), |
1028 | "pop", | |
1029 | 0, | |
1030 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1031 | PerlIOPop_pushed, | |
1032 | NULL, | |
c0888ace | 1033 | PerlIOBase_open, |
4ec2216f NIS |
1034 | NULL, |
1035 | NULL, | |
1036 | NULL, | |
1037 | NULL, | |
1038 | NULL, | |
1039 | NULL, | |
1040 | NULL, | |
1041 | NULL, | |
de009b76 AL |
1042 | NULL, |
1043 | NULL, | |
4ec2216f NIS |
1044 | NULL, /* flush */ |
1045 | NULL, /* fill */ | |
1046 | NULL, | |
1047 | NULL, | |
1048 | NULL, | |
1049 | NULL, | |
1050 | NULL, /* get_base */ | |
1051 | NULL, /* get_bufsiz */ | |
1052 | NULL, /* get_ptr */ | |
1053 | NULL, /* get_cnt */ | |
1054 | NULL, /* set_ptrcnt */ | |
1055 | }; | |
1056 | ||
fcf2db38 | 1057 | PerlIO_list_t * |
e3f3bf95 NIS |
1058 | PerlIO_default_layers(pTHX) |
1059 | { | |
3a1ee7e8 | 1060 | if (!PL_def_layerlist) { |
284167a5 | 1061 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1062 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1063 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1064 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1065 | #if defined(WIN32) |
27da23d5 | 1066 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1067 | #if 0 |
14a5cf38 | 1068 | osLayer = &PerlIO_win32; |
0c4128ad | 1069 | #endif |
2f8118af | 1070 | #endif |
27da23d5 JH |
1071 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1072 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1073 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1074 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1075 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1076 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1077 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
0987d6f3 TC |
1078 | PerlIO_list_push(aTHX_ PL_def_layerlist, (PerlIO_funcs *)osLayer, |
1079 | &PL_sv_undef); | |
14a5cf38 | 1080 | if (s) { |
3a1ee7e8 | 1081 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1082 | } |
1083 | else { | |
3a1ee7e8 | 1084 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1085 | } |
1141d9f8 | 1086 | } |
3a1ee7e8 NIS |
1087 | if (PL_def_layerlist->cur < 2) { |
1088 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1089 | } |
3a1ee7e8 | 1090 | return PL_def_layerlist; |
e3f3bf95 NIS |
1091 | } |
1092 | ||
0c4f7ff0 NIS |
1093 | void |
1094 | Perl_boot_core_PerlIO(pTHX) | |
1095 | { | |
1096 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1097 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1098 | __FILE__); | |
0c4f7ff0 | 1099 | #endif |
14a5cf38 | 1100 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1101 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1102 | } |
e3f3bf95 NIS |
1103 | |
1104 | PerlIO_funcs * | |
1105 | PerlIO_default_layer(pTHX_ I32 n) | |
1106 | { | |
46c461b5 | 1107 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1108 | if (n < 0) |
1109 | n += av->cur; | |
27da23d5 | 1110 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1111 | } |
1112 | ||
a999f61b NIS |
1113 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1114 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1115 | |
1116 | void | |
1141d9f8 | 1117 | PerlIO_stdstreams(pTHX) |
60382766 | 1118 | { |
a1ea730d | 1119 | if (!PL_perlio) { |
8995e67d | 1120 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1121 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1122 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1123 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1124 | } | |
60382766 NIS |
1125 | } |
1126 | ||
1127 | PerlIO * | |
27da23d5 | 1128 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1129 | { |
16865ff7 | 1130 | VERIFY_HEAD(f); |
2dc2558e | 1131 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1132 | Perl_croak( aTHX_ |
5cf96513 RB |
1133 | "%s (%"UVuf") does not match %s (%"UVuf")", |
1134 | "PerlIO layer function table size", (UV)tab->fsize, | |
1135 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1136 | } |
1137 | if (tab->size) { | |
b464bac0 | 1138 | PerlIOl *l; |
2dc2558e | 1139 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1140 | Perl_croak( aTHX_ |
5cf96513 RB |
1141 | "%s (%"UVuf") smaller than %s (%"UVuf")", |
1142 | "PerlIO layer instance size", (UV)tab->size, | |
1143 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1144 | } |
1145 | /* Real layer with a data area */ | |
002e75cf JH |
1146 | if (f) { |
1147 | char *temp; | |
1148 | Newxz(temp, tab->size, char); | |
1149 | l = (PerlIOl*)temp; | |
1150 | if (l) { | |
1151 | l->next = *f; | |
1152 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1153 | l->head = ((PerlIOl*)f)->head; |
002e75cf | 1154 | *f = l; |
e17bc05a TC |
1155 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", |
1156 | (void*)f, tab->name, | |
1157 | (mode) ? mode : "(Null)", (void*)arg) ); | |
002e75cf JH |
1158 | if (*l->tab->Pushed && |
1159 | (*l->tab->Pushed) | |
1160 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1161 | PerlIO_pop(aTHX_ f); | |
1162 | return NULL; | |
1163 | } | |
2dc2558e | 1164 | } |
002e75cf JH |
1165 | else |
1166 | return NULL; | |
2dc2558e NIS |
1167 | } |
1168 | } | |
1169 | else if (f) { | |
1170 | /* Pseudo-layer where push does its own stack adjust */ | |
e17bc05a TC |
1171 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1172 | (mode) ? mode : "(Null)", (void*)arg) ); | |
210e727c | 1173 | if (tab->Pushed && |
27da23d5 | 1174 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1175 | return NULL; |
14a5cf38 JH |
1176 | } |
1177 | } | |
1178 | return f; | |
60382766 NIS |
1179 | } |
1180 | ||
81fe74fb LT |
1181 | PerlIO * |
1182 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1183 | IV n, const char *mode, int fd, int imode, int perm, | |
1184 | PerlIO *old, int narg, SV **args) | |
1185 | { | |
1186 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1187 | if (tab && tab->Open) { | |
1188 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1189 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1190 | PerlIO_close(ret); |
1191 | return NULL; | |
1192 | } | |
1193 | return ret; | |
1194 | } | |
1195 | SETERRNO(EINVAL, LIB_INVARG); | |
1196 | return NULL; | |
1197 | } | |
1198 | ||
dfebf958 | 1199 | IV |
86e05cf2 NIS |
1200 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1201 | { | |
1202 | if (PerlIOValid(f)) { | |
1203 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1204 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1205 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1206 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1207 | } | |
1208 | else { | |
1209 | /* Not suitable - pop it */ | |
1210 | PerlIO_pop(aTHX_ f); | |
1211 | } | |
1212 | return 0; | |
1213 | } | |
1214 | return -1; | |
1215 | } | |
1216 | ||
1217 | IV | |
2dc2558e | 1218 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1219 | { |
8772537c AL |
1220 | PERL_UNUSED_ARG(mode); |
1221 | PERL_UNUSED_ARG(arg); | |
1222 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1223 | |
04892f78 | 1224 | if (PerlIOValid(f)) { |
86e05cf2 | 1225 | PerlIO *t; |
de009b76 | 1226 | const PerlIOl *l; |
14a5cf38 | 1227 | PerlIO_flush(f); |
86e05cf2 NIS |
1228 | /* |
1229 | * Strip all layers that are not suitable for a raw stream | |
1230 | */ | |
1231 | t = f; | |
1232 | while (t && (l = *t)) { | |
cc6623a8 | 1233 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1234 | /* Has a handler - normal case */ |
9d97e8b8 | 1235 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1236 | if (*t == l) { |
1237 | /* Layer still there - move down a layer */ | |
1238 | t = PerlIONext(t); | |
1239 | } | |
1240 | } | |
1241 | else { | |
1242 | return -1; | |
1243 | } | |
14a5cf38 JH |
1244 | } |
1245 | else { | |
86e05cf2 NIS |
1246 | /* No handler - pop it */ |
1247 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1248 | } |
1249 | } | |
86e05cf2 | 1250 | if (PerlIOValid(f)) { |
e17bc05a TC |
1251 | DEBUG_i( PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1252 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)") ); | |
86e05cf2 NIS |
1253 | return 0; |
1254 | } | |
14a5cf38 JH |
1255 | } |
1256 | return -1; | |
dfebf958 NIS |
1257 | } |
1258 | ||
ac27b0f5 | 1259 | int |
14a5cf38 | 1260 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1261 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1262 | { |
14a5cf38 JH |
1263 | int code = 0; |
1264 | while (n < max) { | |
8772537c | 1265 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1266 | if (tab) { |
1267 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1268 | code = -1; | |
1269 | break; | |
1270 | } | |
1271 | } | |
1272 | n++; | |
1273 | } | |
1274 | return code; | |
e3f3bf95 NIS |
1275 | } |
1276 | ||
1277 | int | |
ac27b0f5 NIS |
1278 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1279 | { | |
14a5cf38 | 1280 | int code = 0; |
da0fccaa DG |
1281 | ENTER; |
1282 | save_scalar(PL_errgv); | |
53f1b6d2 | 1283 | if (f && names) { |
8772537c | 1284 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1285 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1286 | if (code == 0) { | |
d9dac8cd | 1287 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1288 | } |
3a1ee7e8 | 1289 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1290 | } |
da0fccaa | 1291 | LEAVE; |
14a5cf38 | 1292 | return code; |
ac27b0f5 NIS |
1293 | } |
1294 | ||
f3862f8b | 1295 | |
60382766 | 1296 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1297 | /* |
71200d45 | 1298 | * Given the abstraction above the public API functions |
14a5cf38 | 1299 | */ |
60382766 NIS |
1300 | |
1301 | int | |
f5b9d040 | 1302 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1303 | { |
5347602a DM |
1304 | PERL_UNUSED_ARG(iotype); |
1305 | PERL_UNUSED_ARG(mode); | |
1306 | ||
e17bc05a TC |
1307 | DEBUG_i( |
1308 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, | |
1309 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? | |
1310 | PerlIOBase(f)->tab->name : "(Null)", | |
1311 | iotype, mode, (names) ? names : "(Null)") ); | |
68b5363f | 1312 | |
03c0554d NIS |
1313 | if (names) { |
1314 | /* Do not flush etc. if (e.g.) switching encodings. | |
1315 | if a pushed layer knows it needs to flush lower layers | |
1316 | (for example :unix which is never going to call them) | |
1317 | it can do the flush when it is pushed. | |
1318 | */ | |
1319 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1320 | } | |
1321 | else { | |
86e05cf2 | 1322 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1323 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1324 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1325 | O_BINARY so we can look for it in mode. | |
1326 | */ | |
1327 | if (!(mode & O_BINARY)) { | |
1328 | /* Text mode */ | |
86e05cf2 NIS |
1329 | /* FIXME?: Looking down the layer stack seems wrong, |
1330 | but is a way of reaching past (say) an encoding layer | |
1331 | to flip CRLF-ness of the layer(s) below | |
1332 | */ | |
03c0554d NIS |
1333 | while (*f) { |
1334 | /* Perhaps we should turn on bottom-most aware layer | |
1335 | e.g. Ilya's idea that UNIX TTY could serve | |
1336 | */ | |
cc6623a8 DM |
1337 | if (PerlIOBase(f)->tab && |
1338 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1339 | { | |
03c0554d NIS |
1340 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1341 | /* Not in text mode - flush any pending stuff and flip it */ | |
1342 | PerlIO_flush(f); | |
1343 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1344 | } | |
1345 | /* Only need to turn it on in one layer so we are done */ | |
1346 | return TRUE; | |
ed53a2bb | 1347 | } |
03c0554d | 1348 | f = PerlIONext(f); |
14a5cf38 | 1349 | } |
03c0554d NIS |
1350 | /* Not finding a CRLF aware layer presumably means we are binary |
1351 | which is not what was requested - so we failed | |
1352 | We _could_ push :crlf layer but so could caller | |
1353 | */ | |
1354 | return FALSE; | |
14a5cf38 | 1355 | } |
6ce75a77 | 1356 | #endif |
86e05cf2 NIS |
1357 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1358 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1359 | */ |
a0714e2c | 1360 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1361 | } |
f5b9d040 NIS |
1362 | } |
1363 | ||
f5b9d040 | 1364 | int |
e87a358a | 1365 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1366 | { |
37725cdc | 1367 | if (PerlIOValid(f)) { |
46c461b5 | 1368 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1369 | if (tab && tab->Close) |
1370 | return (*tab->Close)(aTHX_ f); | |
1371 | else | |
1372 | return PerlIOBase_close(aTHX_ f); | |
1373 | } | |
14a5cf38 | 1374 | else { |
93189314 | 1375 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1376 | return -1; |
1377 | } | |
76ced9ad NIS |
1378 | } |
1379 | ||
b931b1d9 | 1380 | int |
e87a358a | 1381 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1382 | { |
de009b76 | 1383 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1384 | while (PerlIOValid(f)) { |
1385 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1386 | if (PerlIO_lockcnt(f)) |
1387 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1388 | f = PerlIONext(f); | |
f6c77cf1 | 1389 | } |
14a5cf38 | 1390 | return code; |
b931b1d9 NIS |
1391 | } |
1392 | ||
b931b1d9 | 1393 | int |
e87a358a | 1394 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1395 | { |
20b7effb | 1396 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1397 | } |
1398 | ||
1141d9f8 | 1399 | |
fcf2db38 | 1400 | static PerlIO_funcs * |
2edd7e44 NIS |
1401 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1402 | { | |
14a5cf38 | 1403 | /* |
71200d45 | 1404 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1405 | */ |
526fd1b4 | 1406 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1407 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1408 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1409 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1410 | if (!f) |
dcbac5bb | 1411 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1412 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1413 | return f; |
1414 | } | |
14a5cf38 JH |
1415 | |
1416 | /* | |
71200d45 | 1417 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1418 | */ |
1419 | switch (SvTYPE(sv)) { | |
1420 | case SVt_PVAV: | |
6a245ed1 | 1421 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1422 | case SVt_PVHV: |
6a245ed1 | 1423 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1424 | case SVt_PVCV: |
6a245ed1 | 1425 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1426 | case SVt_PVGV: |
6a245ed1 | 1427 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1428 | default: |
1429 | return NULL; | |
14a5cf38 | 1430 | } |
2edd7e44 NIS |
1431 | } |
1432 | ||
fcf2db38 | 1433 | PerlIO_list_t * |
14a5cf38 JH |
1434 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1435 | const char *mode, int narg, SV **args) | |
1436 | { | |
1437 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); | |
1438 | int incdef = 1; | |
a1ea730d | 1439 | if (!PL_perlio) |
14a5cf38 JH |
1440 | PerlIO_stdstreams(aTHX); |
1441 | if (narg) { | |
dcda55fc | 1442 | SV * const arg = *args; |
14a5cf38 | 1443 | /* |
71200d45 NIS |
1444 | * If it is a reference but not an object see if we have a handler |
1445 | * for it | |
14a5cf38 | 1446 | */ |
4e0ef342 | 1447 | if (SvROK(arg) && !SvOBJECT(SvRV(arg))) { |
46c461b5 | 1448 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1449 | if (handler) { |
3a1ee7e8 NIS |
1450 | def = PerlIO_list_alloc(aTHX); |
1451 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1452 | incdef = 0; |
1453 | } | |
1454 | /* | |
e934609f | 1455 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1456 | * something sensible else we will just stringfy and open |
71200d45 | 1457 | * resulting string. |
14a5cf38 JH |
1458 | */ |
1459 | } | |
1460 | } | |
9fe371da | 1461 | if (!layers || !*layers) |
11bcd5da | 1462 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1463 | if (layers && *layers) { |
1464 | PerlIO_list_t *av; | |
1465 | if (incdef) { | |
a951d81d | 1466 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1467 | } |
1468 | else { | |
1469 | av = def; | |
1470 | } | |
0cff2cf3 NIS |
1471 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1472 | return av; | |
1473 | } | |
1474 | else { | |
1475 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1476 | return NULL; |
0cff2cf3 | 1477 | } |
14a5cf38 JH |
1478 | } |
1479 | else { | |
1480 | if (incdef) | |
1481 | def->refcnt++; | |
1482 | return def; | |
1483 | } | |
ee518936 NIS |
1484 | } |
1485 | ||
1486 | PerlIO * | |
14a5cf38 JH |
1487 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1488 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1489 | { | |
1490 | if (!f && narg == 1 && *args == &PL_sv_undef) { | |
1491 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1492 | if (!layers || !*layers) |
11bcd5da | 1493 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1494 | if (layers && *layers) |
1495 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1496 | } | |
1497 | } | |
1498 | else { | |
de009b76 | 1499 | PerlIO_list_t *layera; |
14a5cf38 JH |
1500 | IV n; |
1501 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1502 | if (PerlIOValid(f)) { |
14a5cf38 | 1503 | /* |
71200d45 NIS |
1504 | * This is "reopen" - it is not tested as perl does not use it |
1505 | * yet | |
14a5cf38 JH |
1506 | */ |
1507 | PerlIOl *l = *f; | |
3a1ee7e8 | 1508 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1509 | while (l) { |
a951d81d | 1510 | SV *arg = NULL; |
cc6623a8 | 1511 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1512 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1513 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1514 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1515 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1516 | l = *PerlIONext(&l); |
1517 | } | |
1518 | } | |
1519 | else { | |
1520 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1521 | if (!layera) { |
1522 | return NULL; | |
1523 | } | |
14a5cf38 JH |
1524 | } |
1525 | /* | |
71200d45 | 1526 | * Start at "top" of layer stack |
14a5cf38 JH |
1527 | */ |
1528 | n = layera->cur - 1; | |
1529 | while (n >= 0) { | |
46c461b5 | 1530 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1531 | if (t && t->Open) { |
1532 | tab = t; | |
1533 | break; | |
1534 | } | |
1535 | n--; | |
1536 | } | |
1537 | if (tab) { | |
1538 | /* | |
71200d45 | 1539 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1540 | */ |
7cf31beb | 1541 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1542 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1543 | } |
e17bc05a TC |
1544 | DEBUG_i( PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
1545 | tab->name, layers ? layers : "(Null)", mode, fd, | |
1546 | imode, perm, (void*)f, narg, (void*)args) ); | |
210e727c JH |
1547 | if (tab->Open) |
1548 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1549 | f, narg, args); | |
1550 | else { | |
1551 | SETERRNO(EINVAL, LIB_INVARG); | |
1552 | f = NULL; | |
1553 | } | |
14a5cf38 JH |
1554 | if (f) { |
1555 | if (n + 1 < layera->cur) { | |
1556 | /* | |
1557 | * More layers above the one that we used to open - | |
71200d45 | 1558 | * apply them now |
14a5cf38 | 1559 | */ |
d9dac8cd NIS |
1560 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1561 | /* If pushing layers fails close the file */ | |
1562 | PerlIO_close(f); | |
14a5cf38 JH |
1563 | f = NULL; |
1564 | } | |
1565 | } | |
1566 | } | |
1567 | } | |
3a1ee7e8 | 1568 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1569 | } |
1570 | return f; | |
ee518936 | 1571 | } |
b931b1d9 NIS |
1572 | |
1573 | ||
9e353e3b | 1574 | SSize_t |
e87a358a | 1575 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1576 | { |
7918f24d NC |
1577 | PERL_ARGS_ASSERT_PERLIO_READ; |
1578 | ||
b32dd47e | 1579 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1580 | } |
1581 | ||
313ca112 | 1582 | SSize_t |
e87a358a | 1583 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1584 | { |
7918f24d NC |
1585 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1586 | ||
b32dd47e | 1587 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1588 | } |
1589 | ||
9e353e3b | 1590 | SSize_t |
e87a358a | 1591 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1592 | { |
7918f24d NC |
1593 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1594 | ||
b32dd47e | 1595 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1596 | } |
1597 | ||
6f9d8c32 | 1598 | int |
e87a358a | 1599 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1600 | { |
b32dd47e | 1601 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1602 | } |
1603 | ||
9e353e3b | 1604 | Off_t |
e87a358a | 1605 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1606 | { |
b32dd47e | 1607 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1608 | } |
1609 | ||
6f9d8c32 | 1610 | int |
e87a358a | 1611 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1612 | { |
14a5cf38 JH |
1613 | if (f) { |
1614 | if (*f) { | |
de009b76 | 1615 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1616 | |
1617 | if (tab && tab->Flush) | |
f62ce20a | 1618 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1619 | else |
1620 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1621 | } |
1622 | else { | |
e17bc05a | 1623 | DEBUG_i( PerlIO_debug("Cannot flush f=%p\n", (void*)f) ); |
93189314 | 1624 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1625 | return -1; |
1626 | } | |
1627 | } | |
1628 | else { | |
1629 | /* | |
1630 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1631 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1632 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1633 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1634 | * decisions? --jhi |
14a5cf38 | 1635 | */ |
303f2dc3 DM |
1636 | PerlIOl **table = &PL_perlio; |
1637 | PerlIOl *ff; | |
14a5cf38 | 1638 | int code = 0; |
303f2dc3 | 1639 | while ((ff = *table)) { |
14a5cf38 | 1640 | int i; |
303f2dc3 | 1641 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1642 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1643 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1644 | code = -1; |
303f2dc3 | 1645 | ff++; |
14a5cf38 JH |
1646 | } |
1647 | } | |
1648 | return code; | |
1649 | } | |
760ac839 LW |
1650 | } |
1651 | ||
a9c883f6 | 1652 | void |
f62ce20a | 1653 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1654 | { |
303f2dc3 DM |
1655 | PerlIOl **table = &PL_perlio; |
1656 | PerlIOl *f; | |
14a5cf38 JH |
1657 | while ((f = *table)) { |
1658 | int i; | |
303f2dc3 | 1659 | table = (PerlIOl **) (f++); |
14a5cf38 | 1660 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1661 | if (f->next |
1662 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1663 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1664 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1665 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1666 | f++; |
1667 | } | |
a9c883f6 | 1668 | } |
a9c883f6 NIS |
1669 | } |
1670 | ||
06da4f11 | 1671 | int |
e87a358a | 1672 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1673 | { |
b32dd47e | 1674 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1675 | } |
1676 | ||
f3862f8b NIS |
1677 | int |
1678 | PerlIO_isutf8(PerlIO *f) | |
1679 | { | |
1b7a0411 JH |
1680 | if (PerlIOValid(f)) |
1681 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1682 | else | |
1683 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1684 | |
1b7a0411 | 1685 | return -1; |
f3862f8b NIS |
1686 | } |
1687 | ||
6f9d8c32 | 1688 | int |
e87a358a | 1689 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1690 | { |
b32dd47e | 1691 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1692 | } |
1693 | ||
9e353e3b | 1694 | int |
e87a358a | 1695 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1696 | { |
b32dd47e | 1697 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1698 | } |
1699 | ||
9e353e3b | 1700 | void |
e87a358a | 1701 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1702 | { |
b32dd47e | 1703 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1704 | } |
1705 | ||
9e353e3b | 1706 | void |
e87a358a | 1707 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1708 | { |
b32dd47e | 1709 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1710 | } |
1711 | ||
9e353e3b NIS |
1712 | int |
1713 | PerlIO_has_base(PerlIO *f) | |
1714 | { | |
1b7a0411 | 1715 | if (PerlIOValid(f)) { |
46c461b5 | 1716 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1717 | |
1718 | if (tab) | |
1719 | return (tab->Get_base != NULL); | |
1b7a0411 | 1720 | } |
1b7a0411 JH |
1721 | |
1722 | return 0; | |
760ac839 LW |
1723 | } |
1724 | ||
9e353e3b NIS |
1725 | int |
1726 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1727 | { |
d7dfc388 SK |
1728 | if (PerlIOValid(f)) { |
1729 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1730 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1731 | |
d7dfc388 SK |
1732 | if (tab) |
1733 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1734 | } |
14a5cf38 | 1735 | } |
1b7a0411 | 1736 | |
14a5cf38 | 1737 | return 0; |
9e353e3b NIS |
1738 | } |
1739 | ||
9e353e3b NIS |
1740 | int |
1741 | PerlIO_has_cntptr(PerlIO *f) | |
1742 | { | |
04892f78 | 1743 | if (PerlIOValid(f)) { |
46c461b5 | 1744 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1745 | |
1746 | if (tab) | |
1747 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1748 | } |
1b7a0411 | 1749 | |
14a5cf38 | 1750 | return 0; |
9e353e3b NIS |
1751 | } |
1752 | ||
9e353e3b NIS |
1753 | int |
1754 | PerlIO_canset_cnt(PerlIO *f) | |
1755 | { | |
04892f78 | 1756 | if (PerlIOValid(f)) { |
46c461b5 | 1757 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1758 | |
1759 | if (tab) | |
1760 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1761 | } |
1b7a0411 | 1762 | |
14a5cf38 | 1763 | return 0; |
760ac839 LW |
1764 | } |
1765 | ||
888911fc | 1766 | STDCHAR * |
e87a358a | 1767 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1768 | { |
b32dd47e | 1769 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1770 | } |
1771 | ||
b66f3475 | 1772 | SSize_t |
e87a358a | 1773 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1774 | { |
b66f3475 | 1775 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1776 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1777 | } |
1778 | ||
9e353e3b | 1779 | STDCHAR * |
e87a358a | 1780 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1781 | { |
b32dd47e | 1782 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1783 | } |
1784 | ||
b66f3475 | 1785 | SSize_t |
e87a358a | 1786 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1787 | { |
b32dd47e | 1788 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1789 | } |
1790 | ||
9e353e3b | 1791 | void |
b66f3475 | 1792 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1793 | { |
b32dd47e | 1794 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1795 | } |
1796 | ||
9e353e3b | 1797 | void |
b66f3475 | 1798 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1799 | { |
b32dd47e | 1800 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1801 | } |
1802 | ||
4ec2216f | 1803 | |
9e353e3b | 1804 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1805 | /* |
71200d45 | 1806 | * utf8 and raw dummy layers |
14a5cf38 | 1807 | */ |
dfebf958 | 1808 | |
26fb694e | 1809 | IV |
2dc2558e | 1810 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1811 | { |
96a5add6 | 1812 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1813 | PERL_UNUSED_ARG(mode); |
1814 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1815 | if (PerlIOValid(f)) { |
cc6623a8 | 1816 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1817 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1818 | else | |
1819 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1820 | return 0; | |
1821 | } | |
1822 | return -1; | |
26fb694e NIS |
1823 | } |
1824 | ||
27da23d5 | 1825 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1826 | sizeof(PerlIO_funcs), |
14a5cf38 | 1827 | "utf8", |
2dc2558e | 1828 | 0, |
a778d1f5 | 1829 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1830 | PerlIOUtf8_pushed, |
1831 | NULL, | |
c0888ace | 1832 | PerlIOBase_open, |
14a5cf38 JH |
1833 | NULL, |
1834 | NULL, | |
1835 | NULL, | |
1836 | NULL, | |
1837 | NULL, | |
1838 | NULL, | |
1839 | NULL, | |
1840 | NULL, | |
de009b76 AL |
1841 | NULL, |
1842 | NULL, | |
22569500 NIS |
1843 | NULL, /* flush */ |
1844 | NULL, /* fill */ | |
14a5cf38 JH |
1845 | NULL, |
1846 | NULL, | |
1847 | NULL, | |
1848 | NULL, | |
22569500 NIS |
1849 | NULL, /* get_base */ |
1850 | NULL, /* get_bufsiz */ | |
1851 | NULL, /* get_ptr */ | |
1852 | NULL, /* get_cnt */ | |
1853 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1854 | }; |
1855 | ||
27da23d5 | 1856 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1857 | sizeof(PerlIO_funcs), |
14a5cf38 | 1858 | "bytes", |
2dc2558e | 1859 | 0, |
a778d1f5 | 1860 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1861 | PerlIOUtf8_pushed, |
1862 | NULL, | |
c0888ace | 1863 | PerlIOBase_open, |
14a5cf38 JH |
1864 | NULL, |
1865 | NULL, | |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
1869 | NULL, | |
1870 | NULL, | |
1871 | NULL, | |
de009b76 AL |
1872 | NULL, |
1873 | NULL, | |
22569500 NIS |
1874 | NULL, /* flush */ |
1875 | NULL, /* fill */ | |
14a5cf38 JH |
1876 | NULL, |
1877 | NULL, | |
1878 | NULL, | |
1879 | NULL, | |
22569500 NIS |
1880 | NULL, /* get_base */ |
1881 | NULL, /* get_bufsiz */ | |
1882 | NULL, /* get_ptr */ | |
1883 | NULL, /* get_cnt */ | |
1884 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1885 | }; |
1886 | ||
27da23d5 | 1887 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1888 | sizeof(PerlIO_funcs), |
14a5cf38 | 1889 | "raw", |
2dc2558e | 1890 | 0, |
14a5cf38 JH |
1891 | PERLIO_K_DUMMY, |
1892 | PerlIORaw_pushed, | |
1893 | PerlIOBase_popped, | |
ecfd0649 | 1894 | PerlIOBase_open, |
14a5cf38 JH |
1895 | NULL, |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
1901 | NULL, | |
1902 | NULL, | |
de009b76 AL |
1903 | NULL, |
1904 | NULL, | |
22569500 NIS |
1905 | NULL, /* flush */ |
1906 | NULL, /* fill */ | |
14a5cf38 JH |
1907 | NULL, |
1908 | NULL, | |
1909 | NULL, | |
1910 | NULL, | |
22569500 NIS |
1911 | NULL, /* get_base */ |
1912 | NULL, /* get_bufsiz */ | |
1913 | NULL, /* get_ptr */ | |
1914 | NULL, /* get_cnt */ | |
1915 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1916 | }; |
1917 | /*--------------------------------------------------------------------------------------*/ | |
1918 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1919 | /* |
71200d45 | 1920 | * "Methods" of the "base class" |
14a5cf38 | 1921 | */ |
9e353e3b NIS |
1922 | |
1923 | IV | |
f62ce20a | 1924 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1925 | { |
04892f78 | 1926 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1927 | } |
1928 | ||
f5b9d040 | 1929 | char * |
81428673 | 1930 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1931 | { |
1932 | char *s = buf; | |
81428673 | 1933 | if (PerlIOValid(f)) { |
de009b76 | 1934 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1935 | if (flags & PERLIO_F_APPEND) { |
1936 | *s++ = 'a'; | |
1937 | if (flags & PERLIO_F_CANREAD) { | |
1938 | *s++ = '+'; | |
1939 | } | |
14a5cf38 | 1940 | } |
81428673 NIS |
1941 | else if (flags & PERLIO_F_CANREAD) { |
1942 | *s++ = 'r'; | |
1943 | if (flags & PERLIO_F_CANWRITE) | |
1944 | *s++ = '+'; | |
1945 | } | |
1946 | else if (flags & PERLIO_F_CANWRITE) { | |
1947 | *s++ = 'w'; | |
1948 | if (flags & PERLIO_F_CANREAD) { | |
1949 | *s++ = '+'; | |
1950 | } | |
14a5cf38 | 1951 | } |
35990314 | 1952 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1953 | if (!(flags & PERLIO_F_CRLF)) |
1954 | *s++ = 'b'; | |
5f1a76d0 | 1955 | #endif |
81428673 | 1956 | } |
14a5cf38 JH |
1957 | *s = '\0'; |
1958 | return buf; | |
f5b9d040 NIS |
1959 | } |
1960 | ||
81428673 | 1961 | |
76ced9ad | 1962 | IV |
2dc2558e | 1963 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1964 | { |
de009b76 | 1965 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1966 | PERL_UNUSED_CONTEXT; |
8772537c | 1967 | PERL_UNUSED_ARG(arg); |
de009b76 | 1968 | |
14a5cf38 JH |
1969 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1970 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 1971 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
1972 | l->flags |= PERLIO_F_FASTGETS; |
1973 | if (mode) { | |
3b6c1aba | 1974 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
1975 | mode++; |
1976 | switch (*mode++) { | |
1977 | case 'r': | |
1978 | l->flags |= PERLIO_F_CANREAD; | |
1979 | break; | |
1980 | case 'a': | |
1981 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
1982 | break; | |
1983 | case 'w': | |
1984 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
1985 | break; | |
1986 | default: | |
93189314 | 1987 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1988 | return -1; |
1989 | } | |
49fc4906 YK |
1990 | #ifdef EBCDIC |
1991 | { | |
1992 | /* The mode variable contains one positional parameter followed by | |
1993 | * optional keyword parameters. The positional parameters must be | |
1994 | * passed as lowercase characters. The keyword parameters can be | |
1995 | * passed in mixed case. They must be separated by commas. Only one | |
1996 | * instance of a keyword can be specified. */ | |
1997 | int comma = 0; | |
1998 | while (*mode) { | |
1999 | switch (*mode++) { | |
2000 | case '+': | |
2001 | if(!comma) | |
2002 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2003 | break; | |
2004 | case 'b': | |
2005 | if(!comma) | |
2006 | l->flags &= ~PERLIO_F_CRLF; | |
2007 | break; | |
2008 | case 't': | |
2009 | if(!comma) | |
2010 | l->flags |= PERLIO_F_CRLF; | |
2011 | break; | |
2012 | case ',': | |
2013 | comma = 1; | |
2014 | break; | |
2015 | default: | |
2016 | break; | |
2017 | } | |
2018 | } | |
2019 | } | |
2020 | #else | |
14a5cf38 JH |
2021 | while (*mode) { |
2022 | switch (*mode++) { | |
2023 | case '+': | |
2024 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2025 | break; | |
2026 | case 'b': | |
2027 | l->flags &= ~PERLIO_F_CRLF; | |
2028 | break; | |
2029 | case 't': | |
2030 | l->flags |= PERLIO_F_CRLF; | |
2031 | break; | |
2032 | default: | |
93189314 | 2033 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2034 | return -1; |
2035 | } | |
2036 | } | |
49fc4906 | 2037 | #endif |
14a5cf38 JH |
2038 | } |
2039 | else { | |
2040 | if (l->next) { | |
2041 | l->flags |= l->next->flags & | |
2042 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2043 | PERLIO_F_APPEND); | |
2044 | } | |
2045 | } | |
5e2ab84b | 2046 | #if 0 |
e17bc05a | 2047 | DEBUG_i( |
14a5cf38 | 2048 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2049 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2050 | l->flags, PerlIO_modestr(f, temp)); |
e17bc05a | 2051 | ); |
5e2ab84b | 2052 | #endif |
14a5cf38 | 2053 | return 0; |
76ced9ad NIS |
2054 | } |
2055 | ||
2056 | IV | |
f62ce20a | 2057 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2058 | { |
96a5add6 | 2059 | PERL_UNUSED_CONTEXT; |
8772537c | 2060 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2061 | return 0; |
760ac839 LW |
2062 | } |
2063 | ||
9e353e3b | 2064 | SSize_t |
f62ce20a | 2065 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2066 | { |
14a5cf38 | 2067 | /* |
71200d45 | 2068 | * Save the position as current head considers it |
14a5cf38 | 2069 | */ |
de009b76 | 2070 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2071 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2072 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2073 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2074 | } |
2075 | ||
f6c77cf1 | 2076 | SSize_t |
f62ce20a | 2077 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2078 | { |
14a5cf38 JH |
2079 | STDCHAR *buf = (STDCHAR *) vbuf; |
2080 | if (f) { | |
263df5f1 JH |
2081 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2082 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2083 | SETERRNO(EBADF, SS_IVCHAN); | |
0ea86a10 | 2084 | PerlIO_save_errno(f); |
263df5f1 JH |
2085 | return 0; |
2086 | } | |
14a5cf38 | 2087 | while (count > 0) { |
93c2c2ec IZ |
2088 | get_cnt: |
2089 | { | |
14a5cf38 JH |
2090 | SSize_t avail = PerlIO_get_cnt(f); |
2091 | SSize_t take = 0; | |
2092 | if (avail > 0) | |
94e529cc | 2093 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2094 | if (take > 0) { |
2095 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2096 | Copy(ptr, buf, take, STDCHAR); | |
2097 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2098 | count -= take; | |
2099 | buf += take; | |
93c2c2ec IZ |
2100 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2101 | goto get_cnt; | |
14a5cf38 JH |
2102 | } |
2103 | if (count > 0 && avail <= 0) { | |
2104 | if (PerlIO_fill(f) != 0) | |
2105 | break; | |
2106 | } | |
93c2c2ec | 2107 | } |
14a5cf38 JH |
2108 | } |
2109 | return (buf - (STDCHAR *) vbuf); | |
2110 | } | |
f6c77cf1 | 2111 | return 0; |
f6c77cf1 NIS |
2112 | } |
2113 | ||
9e353e3b | 2114 | IV |
f62ce20a | 2115 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2116 | { |
96a5add6 | 2117 | PERL_UNUSED_CONTEXT; |
8772537c | 2118 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2119 | return 0; |
9e353e3b NIS |
2120 | } |
2121 | ||
2122 | IV | |
f62ce20a | 2123 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2124 | { |
96a5add6 | 2125 | PERL_UNUSED_CONTEXT; |
8772537c | 2126 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2127 | return -1; |
06da4f11 NIS |
2128 | } |
2129 | ||
2130 | IV | |
f62ce20a | 2131 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2132 | { |
37725cdc NIS |
2133 | IV code = -1; |
2134 | if (PerlIOValid(f)) { | |
2135 | PerlIO *n = PerlIONext(f); | |
2136 | code = PerlIO_flush(f); | |
2137 | PerlIOBase(f)->flags &= | |
2138 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2139 | while (PerlIOValid(n)) { | |
de009b76 | 2140 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2141 | if (tab && tab->Close) { |
2142 | if ((*tab->Close)(aTHX_ n) != 0) | |
2143 | code = -1; | |
2144 | break; | |
2145 | } | |
2146 | else { | |
2147 | PerlIOBase(n)->flags &= | |
2148 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2149 | } | |
2150 | n = PerlIONext(n); | |
2151 | } | |
2152 | } | |
2153 | else { | |
2154 | SETERRNO(EBADF, SS_IVCHAN); | |
2155 | } | |
14a5cf38 | 2156 | return code; |
9e353e3b NIS |
2157 | } |
2158 | ||
2159 | IV | |
f62ce20a | 2160 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2161 | { |
96a5add6 | 2162 | PERL_UNUSED_CONTEXT; |
04892f78 | 2163 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2164 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2165 | } | |
2166 | return 1; | |
9e353e3b NIS |
2167 | } |
2168 | ||
2169 | IV | |
f62ce20a | 2170 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2171 | { |
96a5add6 | 2172 | PERL_UNUSED_CONTEXT; |
04892f78 | 2173 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2174 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2175 | } | |
2176 | return 1; | |
9e353e3b NIS |
2177 | } |
2178 | ||
2179 | void | |
f62ce20a | 2180 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2181 | { |
04892f78 | 2182 | if (PerlIOValid(f)) { |
dcda55fc | 2183 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2184 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2185 | if (PerlIOValid(n)) |
14a5cf38 JH |
2186 | PerlIO_clearerr(n); |
2187 | } | |
9e353e3b NIS |
2188 | } |
2189 | ||
2190 | void | |
f62ce20a | 2191 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2192 | { |
96a5add6 | 2193 | PERL_UNUSED_CONTEXT; |
04892f78 | 2194 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2195 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2196 | } | |
9e353e3b NIS |
2197 | } |
2198 | ||
93a8090d NIS |
2199 | SV * |
2200 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2201 | { | |
2202 | if (!arg) | |
a0714e2c | 2203 | return NULL; |
24d147a6 | 2204 | #ifdef USE_ITHREADS |
93a8090d | 2205 | if (param) { |
a951d81d BL |
2206 | arg = sv_dup(arg, param); |
2207 | SvREFCNT_inc_simple_void_NN(arg); | |
2208 | return arg; | |
93a8090d NIS |
2209 | } |
2210 | else { | |
2211 | return newSVsv(arg); | |
2212 | } | |
2213 | #else | |
1b6737cc | 2214 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2215 | return newSVsv(arg); |
2216 | #endif | |
2217 | } | |
2218 | ||
2219 | PerlIO * | |
ecdeb87c | 2220 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2221 | { |
1b6737cc | 2222 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2223 | if (PerlIOValid(nexto)) { |
de009b76 | 2224 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2225 | if (tab && tab->Dup) |
2226 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2227 | else | |
2228 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2229 | } |
2230 | if (f) { | |
dcda55fc | 2231 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2232 | SV *arg = NULL; |
93a8090d | 2233 | char buf[8]; |
316ebaf2 | 2234 | assert(self); |
e17bc05a TC |
2235 | DEBUG_i(PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2236 | self->name, | |
2237 | (void*)f, (void*)o, (void*)param) ); | |
27e6dabe JH |
2238 | if (self->Getarg) |
2239 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2240 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2241 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2242 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2243 | SvREFCNT_dec(arg); |
93a8090d NIS |
2244 | } |
2245 | return f; | |
2246 | } | |
2247 | ||
27da23d5 | 2248 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2249 | |
8b84d7dd | 2250 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 | 2251 | static void |
ff25d7bc JH |
2252 | S_more_refcounted_fds(pTHX_ const int new_fd) |
2253 | PERL_TSA_REQUIRES(PL_perlio_mutex) | |
2254 | { | |
7a89be66 | 2255 | dVAR; |
22c96fc1 | 2256 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2257 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2258 | int *new_array; |
2259 | ||
dd791c72 JH |
2260 | #ifndef PERL_IMPLICIT_SYS |
2261 | PERL_UNUSED_CONTEXT; | |
2262 | #endif | |
2263 | ||
e17bc05a TC |
2264 | DEBUG_i( PerlIO_debug("More fds - old=%d, need %d, new=%d\n", |
2265 | old_max, new_fd, new_max) ); | |
22c96fc1 NC |
2266 | |
2267 | if (new_fd < old_max) { | |
2268 | return; | |
2269 | } | |
2270 | ||
f4ae5be6 NC |
2271 | assert (new_max > new_fd); |
2272 | ||
eae082a0 JH |
2273 | /* Use plain realloc() since we need this memory to be really |
2274 | * global and visible to all the interpreters and/or threads. */ | |
2275 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2276 | |
2277 | if (!new_array) { | |
8b84d7dd | 2278 | #ifdef USE_ITHREADS |
6cb8cb21 | 2279 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2280 | #endif |
4cbe3a7d | 2281 | croak_no_mem(); |
22c96fc1 NC |
2282 | } |
2283 | ||
2284 | PL_perlio_fd_refcnt_size = new_max; | |
2285 | PL_perlio_fd_refcnt = new_array; | |
2286 | ||
e17bc05a TC |
2287 | DEBUG_i( PerlIO_debug("Zeroing %p, %d\n", |
2288 | (void*)(new_array + old_max), | |
2289 | new_max - old_max) ); | |
22c96fc1 NC |
2290 | |
2291 | Zero(new_array + old_max, new_max - old_max, int); | |
2292 | } | |
2293 | ||
2294 | ||
93a8090d NIS |
2295 | void |
2296 | PerlIO_init(pTHX) | |
2297 | { | |
8b84d7dd | 2298 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2299 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2300 | } |
2301 | ||
168d5872 NIS |
2302 | void |
2303 | PerlIOUnix_refcnt_inc(int fd) | |
2304 | { | |
27da23d5 | 2305 | dTHX; |
22c96fc1 | 2306 | if (fd >= 0) { |
97aff369 | 2307 | dVAR; |
22c96fc1 | 2308 | |
8b84d7dd | 2309 | #ifdef USE_ITHREADS |
6cb8cb21 | 2310 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2311 | #endif |
22c96fc1 NC |
2312 | if (fd >= PL_perlio_fd_refcnt_size) |
2313 | S_more_refcounted_fds(aTHX_ fd); | |
2314 | ||
27da23d5 | 2315 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2316 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2317 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2318 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2319 | fd, PL_perlio_fd_refcnt[fd]); | |
2320 | } | |
e17bc05a TC |
2321 | DEBUG_i( PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", |
2322 | fd, PL_perlio_fd_refcnt[fd]) ); | |
22c96fc1 | 2323 | |
8b84d7dd | 2324 | #ifdef USE_ITHREADS |
6cb8cb21 | 2325 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2326 | #endif |
8b84d7dd | 2327 | } else { |
12605ff9 | 2328 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2329 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2330 | } |
2331 | } | |
2332 | ||
168d5872 NIS |
2333 | int |
2334 | PerlIOUnix_refcnt_dec(int fd) | |
2335 | { | |
2336 | int cnt = 0; | |
22c96fc1 | 2337 | if (fd >= 0) { |
e17bc05a TC |
2338 | #ifdef DEBUGGING |
2339 | dTHX; | |
2340 | #else | |
97aff369 | 2341 | dVAR; |
e17bc05a | 2342 | #endif |
8b84d7dd | 2343 | #ifdef USE_ITHREADS |
6cb8cb21 | 2344 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2345 | #endif |
8b84d7dd | 2346 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2347 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2348 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2349 | fd, PL_perlio_fd_refcnt_size); |
2350 | } | |
2351 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2352 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2353 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2354 | fd, PL_perlio_fd_refcnt[fd]); |
2355 | } | |
27da23d5 | 2356 | cnt = --PL_perlio_fd_refcnt[fd]; |
e17bc05a | 2357 | DEBUG_i( PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt) ); |
8b84d7dd | 2358 | #ifdef USE_ITHREADS |
6cb8cb21 | 2359 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2360 | #endif |
8b84d7dd | 2361 | } else { |
12605ff9 | 2362 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2363 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2364 | } |
2365 | return cnt; | |
2366 | } | |
2367 | ||
2e0cfa16 FC |
2368 | int |
2369 | PerlIOUnix_refcnt(int fd) | |
2370 | { | |
2371 | dTHX; | |
2372 | int cnt = 0; | |
2373 | if (fd >= 0) { | |
2374 | dVAR; | |
2375 | #ifdef USE_ITHREADS | |
2376 | MUTEX_LOCK(&PL_perlio_mutex); | |
2377 | #endif | |
2378 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2379 | /* diag_listed_as: refcnt: fd %d%s */ | |
2380 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2381 | fd, PL_perlio_fd_refcnt_size); | |
2382 | } | |
2383 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2384 | /* diag_listed_as: refcnt: fd %d%s */ | |
2385 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2386 | fd, PL_perlio_fd_refcnt[fd]); | |
2387 | } | |
2388 | cnt = PL_perlio_fd_refcnt[fd]; | |
2389 | #ifdef USE_ITHREADS | |
2390 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2391 | #endif | |
2392 | } else { | |
2393 | /* diag_listed_as: refcnt: fd %d%s */ | |
2394 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2395 | } | |
2396 | return cnt; | |
2397 | } | |
2398 | ||
694c95cf JH |
2399 | void |
2400 | PerlIO_cleanup(pTHX) | |
2401 | { | |
2402 | int i; | |
2403 | #ifdef USE_ITHREADS | |
e17bc05a | 2404 | DEBUG_i( PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX) ); |
9f4bd222 | 2405 | #else |
e17bc05a | 2406 | DEBUG_i( PerlIO_debug("Cleanup layers\n") ); |
694c95cf | 2407 | #endif |
e47547a8 | 2408 | |
694c95cf JH |
2409 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2410 | for (i=0; i < 3; i++) | |
2411 | PerlIOUnix_refcnt_inc(i); | |
2412 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2413 | /* Restore STDIN..STDERR refcount */ | |
2414 | for (i=0; i < 3; i++) | |
2415 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2416 | |
2417 | if (PL_known_layers) { | |
2418 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2419 | PL_known_layers = NULL; | |
2420 | } | |
27da23d5 | 2421 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2422 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2423 | PL_def_layerlist = NULL; | |
2424 | } | |
6cb8cb21 RGS |
2425 | } |
2426 | ||
0934c9d9 | 2427 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2428 | { |
53d44271 | 2429 | dVAR; |
4f3da17a DM |
2430 | #if 0 |
2431 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2432 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2433 | being present (at least in win32) :-(. | |
2434 | Disable for now. | |
2435 | */ | |
6cb8cb21 RGS |
2436 | #ifdef DEBUGGING |
2437 | { | |
2438 | /* By now all filehandles should have been closed, so any | |
2439 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2440 | * errors. */ | |
77db880c JH |
2441 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2442 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2443 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2444 | int i; |
2445 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2446 | if (PL_perlio_fd_refcnt[i]) { |
2447 | const STRLEN len = | |
2448 | my_snprintf(buf, sizeof(buf), | |
2449 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2450 | i, PL_perlio_fd_refcnt[i]); | |
2451 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2452 | } | |
6cb8cb21 RGS |
2453 | } |
2454 | } | |
2455 | #endif | |
4f3da17a | 2456 | #endif |
eae082a0 JH |
2457 | /* Not bothering with PL_perlio_mutex since by now |
2458 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2459 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2460 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2461 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2462 | PL_perlio_fd_refcnt = NULL; |
2463 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2464 | } |
694c95cf JH |
2465 | } |
2466 | ||
9e353e3b | 2467 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2468 | /* |
71200d45 | 2469 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2470 | */ |
9e353e3b | 2471 | |
14a5cf38 | 2472 | typedef struct { |
22569500 NIS |
2473 | struct _PerlIO base; /* The generic part */ |
2474 | int fd; /* UNIX like file descriptor */ | |
2475 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2476 | } PerlIOUnix; |
2477 | ||
abf9167d DM |
2478 | static void |
2479 | S_lockcnt_dec(pTHX_ const void* f) | |
2480 | { | |
dd791c72 JH |
2481 | #ifndef PERL_IMPLICIT_SYS |
2482 | PERL_UNUSED_CONTEXT; | |
2483 | #endif | |
abf9167d DM |
2484 | PerlIO_lockcnt((PerlIO*)f)--; |
2485 | } | |
2486 | ||
2487 | ||
2488 | /* call the signal handler, and if that handler happens to clear | |
2489 | * this handle, free what we can and return true */ | |
2490 | ||
2491 | static bool | |
2492 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2493 | ENTER; | |
2494 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2495 | PerlIO_lockcnt(f)++; | |
2496 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2497 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2498 | LEAVE; | |
abf9167d | 2499 | return 0; |
be48bbe8 | 2500 | } |
abf9167d DM |
2501 | /* we've just run some perl-level code that could have done |
2502 | * anything, including closing the file or clearing this layer. | |
2503 | * If so, free any lower layers that have already been | |
2504 | * cleared, then return an error. */ | |
2505 | while (PerlIOValid(f) && | |
2506 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2507 | { | |
2508 | const PerlIOl *l = *f; | |
2509 | *f = l->next; | |
2510 | Safefree(l); | |
2511 | } | |
be48bbe8 | 2512 | LEAVE; |
abf9167d DM |
2513 | return 1; |
2514 | } | |
2515 | ||
6f9d8c32 | 2516 | int |
9e353e3b | 2517 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2518 | { |
14a5cf38 | 2519 | int oflags = -1; |
3b6c1aba | 2520 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2521 | mode++; |
2522 | switch (*mode) { | |
2523 | case 'r': | |
2524 | oflags = O_RDONLY; | |
2525 | if (*++mode == '+') { | |
2526 | oflags = O_RDWR; | |
2527 | mode++; | |
2528 | } | |
2529 | break; | |
2530 | ||
2531 | case 'w': | |
2532 | oflags = O_CREAT | O_TRUNC; | |
2533 | if (*++mode == '+') { | |
2534 | oflags |= O_RDWR; | |
2535 | mode++; | |
2536 | } | |
2537 | else | |
2538 | oflags |= O_WRONLY; | |
2539 | break; | |
2540 | ||
2541 | case 'a': | |
2542 | oflags = O_CREAT | O_APPEND; | |
2543 | if (*++mode == '+') { | |
2544 | oflags |= O_RDWR; | |
2545 | mode++; | |
2546 | } | |
2547 | else | |
2548 | oflags |= O_WRONLY; | |
2549 | break; | |
2550 | } | |
43e5477e JH |
2551 | |
2552 | /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */ | |
2553 | ||
2554 | /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one | |
2555 | * of them in, and then bit-and-masking the other them away, won't | |
2556 | * have much of an effect. */ | |
2557 | switch (*mode) { | |
2558 | case 'b': | |
2559 | #if O_TEXT != O_BINARY | |
2560 | oflags |= O_BINARY; | |
14a5cf38 | 2561 | oflags &= ~O_TEXT; |
43e5477e JH |
2562 | #endif |
2563 | mode++; | |
2564 | break; | |
2565 | case 't': | |
2566 | #if O_TEXT != O_BINARY | |
14a5cf38 JH |
2567 | oflags |= O_TEXT; |
2568 | oflags &= ~O_BINARY; | |
43e5477e JH |
2569 | #endif |
2570 | mode++; | |
2571 | break; | |
2572 | default: | |
2573 | # if O_BINARY != 0 | |
2574 | /* bit-or:ing with zero O_BINARY would be useless. */ | |
93f31ee9 PG |
2575 | /* |
2576 | * If neither "t" nor "b" was specified, open the file | |
2577 | * in O_BINARY mode. | |
43e5477e JH |
2578 | * |
2579 | * Note that if something else than the zero byte was seen | |
2580 | * here (e.g. bogus mode "rx"), just few lines later we will | |
2581 | * set the errno and invalidate the flags. | |
93f31ee9 PG |
2582 | */ |
2583 | oflags |= O_BINARY; | |
43e5477e JH |
2584 | # endif |
2585 | break; | |
93f31ee9 | 2586 | } |
14a5cf38 | 2587 | if (*mode || oflags == -1) { |
93189314 | 2588 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2589 | oflags = -1; |
2590 | } | |
2591 | return oflags; | |
9e353e3b NIS |
2592 | } |
2593 | ||
2594 | IV | |
f62ce20a | 2595 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2596 | { |
96a5add6 | 2597 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2598 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2599 | } |
2600 | ||
aa063c35 NIS |
2601 | static void |
2602 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2603 | { |
de009b76 | 2604 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2605 | #if defined(WIN32) |
aa063c35 NIS |
2606 | Stat_t st; |
2607 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2608 | if (!S_ISREG(st.st_mode)) { |
e17bc05a | 2609 | DEBUG_i( PerlIO_debug("%d is not regular file\n",fd) ); |
6caa5a9c NIS |
2610 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2611 | } | |
aa063c35 | 2612 | else { |
e17bc05a | 2613 | DEBUG_i( PerlIO_debug("%d _is_ a regular file\n",fd) ); |
aa063c35 | 2614 | } |
6caa5a9c NIS |
2615 | } |
2616 | #endif | |
aa063c35 NIS |
2617 | s->fd = fd; |
2618 | s->oflags = imode; | |
2619 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2620 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2621 | } |
2622 | ||
2623 | IV | |
2624 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2625 | { | |
2626 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2627 | if (*PerlIONext(f)) { |
4b069b44 | 2628 | /* We never call down so do any pending stuff now */ |
03c0554d | 2629 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2630 | /* |
71200d45 | 2631 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2632 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2633 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2634 | */ |
acbd16bf | 2635 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2636 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2637 | } |
2638 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2639 | |
14a5cf38 | 2640 | return code; |
4b803d04 NIS |
2641 | } |
2642 | ||
c2fcde81 JH |
2643 | IV |
2644 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2645 | { | |
de009b76 | 2646 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2647 | Off_t new_loc; |
96a5add6 | 2648 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2649 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2650 | #ifdef ESPIPE | |
2651 | SETERRNO(ESPIPE, LIB_INVARG); | |
2652 | #else | |
2653 | SETERRNO(EINVAL, LIB_INVARG); | |
2654 | #endif | |
2655 | return -1; | |
2656 | } | |
0723351e NC |
2657 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2658 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2659 | return -1; |
c2fcde81 JH |
2660 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2661 | return 0; | |
2662 | } | |
2663 | ||
9e353e3b | 2664 | PerlIO * |
14a5cf38 JH |
2665 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2666 | IV n, const char *mode, int fd, int imode, | |
2667 | int perm, PerlIO *f, int narg, SV **args) | |
2668 | { | |
d9dac8cd | 2669 | if (PerlIOValid(f)) { |
cc6623a8 | 2670 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2671 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2672 | } |
2673 | if (narg > 0) { | |
3b6c1aba | 2674 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2675 | mode++; |
2676 | else { | |
2677 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2678 | #ifdef VMS |
2679 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2680 | #else | |
14a5cf38 | 2681 | perm = 0666; |
5e2ce0f3 | 2682 | #endif |
14a5cf38 JH |
2683 | } |
2684 | if (imode != -1) { | |
41188aa0 TC |
2685 | STRLEN len; |
2686 | const char *path = SvPV_const(*args, len); | |
2687 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2688 | return NULL; |
14a5cf38 JH |
2689 | fd = PerlLIO_open3(path, imode, perm); |
2690 | } | |
2691 | } | |
2692 | if (fd >= 0) { | |
3b6c1aba | 2693 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2694 | mode++; |
2695 | if (!f) { | |
2696 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2697 | } |
2698 | if (!PerlIOValid(f)) { | |
a33cf58c | 2699 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2700 | PerlLIO_close(fd); |
a33cf58c NIS |
2701 | return NULL; |
2702 | } | |
d9dac8cd | 2703 | } |
aa063c35 | 2704 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2705 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2706 | if (*mode == IoTYPE_APPEND) |
2707 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2708 | return f; |
2709 | } | |
2710 | else { | |
2711 | if (f) { | |
6f207bd3 | 2712 | NOOP; |
14a5cf38 | 2713 | /* |
71200d45 | 2714 | * FIXME: pop layers ??? |
14a5cf38 JH |
2715 | */ |
2716 | } | |
2717 | return NULL; | |
2718 | } | |
9e353e3b NIS |
2719 | } |
2720 | ||
71200d45 | 2721 | PerlIO * |
ecdeb87c | 2722 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2723 | { |
dcda55fc | 2724 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2725 | int fd = os->fd; |
ecdeb87c NIS |
2726 | if (flags & PERLIO_DUP_FD) { |
2727 | fd = PerlLIO_dup(fd); | |
2728 | } | |
22c96fc1 | 2729 | if (fd >= 0) { |
ecdeb87c | 2730 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2731 | if (f) { |
2732 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2733 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2734 | return f; |
2735 | } | |
0a20f69b | 2736 | PerlLIO_close(fd); |
71200d45 NIS |
2737 | } |
2738 | return NULL; | |
2739 | } | |
2740 | ||
2741 | ||
9e353e3b | 2742 | SSize_t |
f62ce20a | 2743 | PerlIOUnix_read(pTHX_ PerlIO *f, 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 == 0) | |
2751 | return PERLIO_STD_IN(fd, vbuf, count); | |
2752 | #endif | |
81428673 | 2753 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2754 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2755 | return 0; |
1fd8f4ce | 2756 | } |
14a5cf38 | 2757 | while (1) { |
b464bac0 | 2758 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2759 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2760 | if (len < 0) { |
2761 | if (errno != EAGAIN) { | |
2762 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2763 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2764 | } |
2765 | } | |
2766 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2767 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2768 | SETERRNO(0,0); |
2769 | } | |
14a5cf38 JH |
2770 | return len; |
2771 | } | |
abf9167d DM |
2772 | /* EINTR */ |
2773 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2774 | return -1; | |
14a5cf38 | 2775 | } |
e5964223 | 2776 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2777 | } |
2778 | ||
2779 | SSize_t | |
f62ce20a | 2780 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2781 | { |
abf9167d DM |
2782 | int fd; |
2783 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2784 | return -1; | |
2785 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2786 | #ifdef PERLIO_STD_SPECIAL |
2787 | if (fd == 1 || fd == 2) | |
2788 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2789 | #endif | |
14a5cf38 | 2790 | while (1) { |
de009b76 | 2791 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2792 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2793 | if (len < 0) { |
2794 | if (errno != EAGAIN) { | |
2795 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2796 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2797 | } |
2798 | } | |
14a5cf38 JH |
2799 | return len; |
2800 | } | |
abf9167d DM |
2801 | /* EINTR */ |
2802 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2803 | return -1; | |
06da4f11 | 2804 | } |
e5964223 | 2805 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2806 | } |
2807 | ||
9e353e3b | 2808 | Off_t |
f62ce20a | 2809 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2810 | { |
96a5add6 AL |
2811 | PERL_UNUSED_CONTEXT; |
2812 | ||
14a5cf38 | 2813 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2814 | } |
2815 | ||
2556f95e GF |
2816 | |
2817 | IV | |
2376d97d | 2818 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2819 | { |
de009b76 | 2820 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2821 | int code = 0; |
168d5872 NIS |
2822 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2823 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2824 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2825 | return 0; | |
22569500 | 2826 | } |
93a8090d NIS |
2827 | } |
2828 | else { | |
93189314 | 2829 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2830 | return -1; |
2831 | } | |
14a5cf38 JH |
2832 | while (PerlLIO_close(fd) != 0) { |
2833 | if (errno != EINTR) { | |
2834 | code = -1; | |
2835 | break; | |
2836 | } | |
abf9167d DM |
2837 | /* EINTR */ |
2838 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2839 | return -1; | |
14a5cf38 JH |
2840 | } |
2841 | if (code == 0) { | |
2842 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2843 | } | |
2844 | return code; | |
9e353e3b NIS |
2845 | } |
2846 | ||
27da23d5 | 2847 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2848 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2849 | "unix", |
2850 | sizeof(PerlIOUnix), | |
2851 | PERLIO_K_RAW, | |
2852 | PerlIOUnix_pushed, | |
2376d97d | 2853 | PerlIOBase_popped, |
14a5cf38 | 2854 | PerlIOUnix_open, |
86e05cf2 | 2855 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2856 | NULL, |
2857 | PerlIOUnix_fileno, | |
71200d45 | 2858 | PerlIOUnix_dup, |
14a5cf38 JH |
2859 | PerlIOUnix_read, |
2860 | PerlIOBase_unread, | |
2861 | PerlIOUnix_write, | |
2862 | PerlIOUnix_seek, | |
2863 | PerlIOUnix_tell, | |
2864 | PerlIOUnix_close, | |
22569500 NIS |
2865 | PerlIOBase_noop_ok, /* flush */ |
2866 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2867 | PerlIOBase_eof, |
2868 | PerlIOBase_error, | |
2869 | PerlIOBase_clearerr, | |
2870 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2871 | NULL, /* get_base */ |
2872 | NULL, /* get_bufsiz */ | |
2873 | NULL, /* get_ptr */ | |
2874 | NULL, /* get_cnt */ | |
2875 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2876 | }; |
2877 | ||
2878 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2879 | /* |
71200d45 | 2880 | * stdio as a layer |
14a5cf38 | 2881 | */ |
9e353e3b | 2882 | |
313e59c8 NIS |
2883 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2884 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2885 | broken by the last second glibc 2.3 fix | |
2886 | */ | |
2887 | #define STDIO_BUFFER_WRITABLE | |
2888 | #endif | |
2889 | ||
2890 | ||
14a5cf38 JH |
2891 | typedef struct { |
2892 | struct _PerlIO base; | |
22569500 | 2893 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2894 | } PerlIOStdio; |
2895 | ||
2896 | IV | |
f62ce20a | 2897 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2898 | { |
96a5add6 AL |
2899 | PERL_UNUSED_CONTEXT; |
2900 | ||
c4420975 AL |
2901 | if (PerlIOValid(f)) { |
2902 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2903 | if (s) | |
2904 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2905 | } |
2906 | errno = EBADF; | |
2907 | return -1; | |
9e353e3b NIS |
2908 | } |
2909 | ||
766a733e | 2910 | char * |
14a5cf38 JH |
2911 | PerlIOStdio_mode(const char *mode, char *tmode) |
2912 | { | |
de009b76 | 2913 | char * const ret = tmode; |
a0625d38 SR |
2914 | if (mode) { |
2915 | while (*mode) { | |
2916 | *tmode++ = *mode++; | |
2917 | } | |
14a5cf38 | 2918 | } |
95005ad8 | 2919 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2920 | *tmode++ = 'b'; |
2921 | #endif | |
14a5cf38 JH |
2922 | *tmode = '\0'; |
2923 | return ret; | |
2924 | } | |
2925 | ||
4b803d04 | 2926 | IV |
2dc2558e | 2927 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2928 | { |
1fd8f4ce NIS |
2929 | PerlIO *n; |
2930 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2931 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2932 | if (toptab == tab) { |
2933 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2934 | PerlIO_pop(aTHX_ f); | |
2935 | return 0; | |
2936 | } else { | |
de009b76 | 2937 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2938 | char tmode[8]; |
2939 | FILE *stdio; | |
81428673 | 2940 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2941 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2942 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2943 | /* We never call down so do any pending stuff now */ | |
2944 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2945 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2946 | } |
1fd8f4ce NIS |
2947 | else { |
2948 | return -1; | |
2949 | } | |
2950 | } | |
14a5cf38 | 2951 | } |
2dc2558e | 2952 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2953 | } |
2954 | ||
22569500 | 2955 | |
9e353e3b | 2956 | PerlIO * |
4b069b44 | 2957 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2958 | { |
14a5cf38 JH |
2959 | dTHX; |
2960 | PerlIO *f = NULL; | |
ea5bc90f YK |
2961 | #ifdef EBCDIC |
2962 | int rc; | |
2963 | char filename[FILENAME_MAX]; | |
2964 | fldata_t fileinfo; | |
2965 | #endif | |
14a5cf38 | 2966 | if (stdio) { |
22569500 | 2967 | PerlIOStdio *s; |
375ed12a JH |
2968 | int fd0 = fileno(stdio); |
2969 | if (fd0 < 0) { | |
ea5bc90f YK |
2970 | #ifdef EBCDIC |
2971 | rc = fldata(stdio,filename,&fileinfo); | |
2972 | if(rc != 0){ | |
2973 | return NULL; | |
2974 | } | |
2975 | if(fileinfo.__dsorgHFS){ | |
2976 | return NULL; | |
2977 | } | |
2978 | /*This MVS dataset , OK!*/ | |
2979 | #else | |
375ed12a | 2980 | return NULL; |
ea5bc90f | 2981 | #endif |
375ed12a | 2982 | } |
4b069b44 NIS |
2983 | if (!mode || !*mode) { |
2984 | /* We need to probe to see how we can open the stream | |
2985 | so start with read/write and then try write and read | |
2986 | we dup() so that we can fclose without loosing the fd. | |
2987 | ||
2988 | Note that the errno value set by a failing fdopen | |
2989 | varies between stdio implementations. | |
2990 | */ | |
375ed12a JH |
2991 | const int fd = PerlLIO_dup(fd0); |
2992 | FILE *f2; | |
2993 | if (fd < 0) { | |
2994 | return f; | |
2995 | } | |
2996 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2997 | if (!f2) { |
a33cf58c | 2998 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2999 | } |
3000 | if (!f2) { | |
a33cf58c | 3001 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
3002 | } |
3003 | if (!f2) { | |
3004 | /* Don't seem to be able to open */ | |
3005 | PerlLIO_close(fd); | |
3006 | return f; | |
3007 | } | |
3008 | fclose(f2); | |
22569500 | 3009 | } |
de092133 | 3010 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
3011 | s = PerlIOSelf(f, PerlIOStdio); |
3012 | s->stdio = stdio; | |
ea5bc90f YK |
3013 | #ifdef EBCDIC |
3014 | fd0 = fileno(stdio); | |
3015 | if(fd0 != -1){ | |
3016 | PerlIOUnix_refcnt_inc(fd0); | |
3017 | } | |
3018 | else{ | |
3019 | rc = fldata(stdio,filename,&fileinfo); | |
3020 | if(rc != 0){ | |
3021 | PerlIOUnix_refcnt_inc(fd0); | |
3022 | } | |
3023 | if(fileinfo.__dsorgHFS){ | |
3024 | PerlIOUnix_refcnt_inc(fd0); | |
3025 | } | |
3026 | /*This MVS dataset , OK!*/ | |
3027 | } | |
3028 | #else | |
c586124f | 3029 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
ea5bc90f | 3030 | #endif |
a33cf58c | 3031 | } |
14a5cf38 JH |
3032 | } |
3033 | return f; | |
9e353e3b NIS |
3034 | } |
3035 | ||
3036 | PerlIO * | |
14a5cf38 JH |
3037 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3038 | IV n, const char *mode, int fd, int imode, | |
3039 | int perm, PerlIO *f, int narg, SV **args) | |
3040 | { | |
3041 | char tmode[8]; | |
d9dac8cd | 3042 | if (PerlIOValid(f)) { |
41188aa0 TC |
3043 | STRLEN len; |
3044 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 3045 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 3046 | FILE *stdio; |
41188aa0 | 3047 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 3048 | return NULL; |
1751d015 | 3049 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
3050 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
3051 | s->stdio); | |
14a5cf38 JH |
3052 | if (!s->stdio) |
3053 | return NULL; | |
3054 | s->stdio = stdio; | |
1751d015 | 3055 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3056 | return f; |
3057 | } | |
3058 | else { | |
3059 | if (narg > 0) { | |
41188aa0 TC |
3060 | STRLEN len; |
3061 | const char * const path = SvPV_const(*args, len); | |
3062 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 3063 | return NULL; |
3b6c1aba | 3064 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3065 | mode++; |
3066 | fd = PerlLIO_open3(path, imode, perm); | |
3067 | } | |
3068 | else { | |
95005ad8 GH |
3069 | FILE *stdio; |
3070 | bool appended = FALSE; | |
3071 | #ifdef __CYGWIN__ | |
3072 | /* Cygwin wants its 'b' early. */ | |
3073 | appended = TRUE; | |
3074 | mode = PerlIOStdio_mode(mode, tmode); | |
3075 | #endif | |
3076 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3077 | if (stdio) { |
6f0313ac JH |
3078 | if (!f) { |
3079 | f = PerlIO_allocate(aTHX); | |
3080 | } | |
95005ad8 GH |
3081 | if (!appended) |
3082 | mode = PerlIOStdio_mode(mode, tmode); | |
3083 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3084 | if (f) { | |
0f0f9e2b JH |
3085 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3086 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3087 | } else { | |
3088 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3089 | } |
3090 | return f; | |
3091 | } | |
3092 | else { | |
3093 | return NULL; | |
3094 | } | |
14a5cf38 JH |
3095 | } |
3096 | } | |
3097 | if (fd >= 0) { | |
3098 | FILE *stdio = NULL; | |
3099 | int init = 0; | |
3b6c1aba | 3100 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3101 | init = 1; |
3102 | mode++; | |
3103 | } | |
3104 | if (init) { | |
3105 | switch (fd) { | |
3106 | case 0: | |
3107 | stdio = PerlSIO_stdin; | |
3108 | break; | |
3109 | case 1: | |
3110 | stdio = PerlSIO_stdout; | |
3111 | break; | |
3112 | case 2: | |
3113 | stdio = PerlSIO_stderr; | |
3114 | break; | |
3115 | } | |
3116 | } | |
3117 | else { | |
3118 | stdio = PerlSIO_fdopen(fd, mode = | |
3119 | PerlIOStdio_mode(mode, tmode)); | |
3120 | } | |
3121 | if (stdio) { | |
d9dac8cd NIS |
3122 | if (!f) { |
3123 | f = PerlIO_allocate(aTHX); | |
3124 | } | |
a33cf58c | 3125 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3126 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3127 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3128 | } |
14a5cf38 JH |
3129 | return f; |
3130 | } | |
0a20f69b | 3131 | PerlLIO_close(fd); |
14a5cf38 JH |
3132 | } |
3133 | } | |
ee518936 | 3134 | return NULL; |
9e353e3b NIS |
3135 | } |
3136 | ||
1751d015 | 3137 | PerlIO * |
ecdeb87c | 3138 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3139 | { |
3140 | /* This assumes no layers underneath - which is what | |
3141 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3142 | */ | |
ecdeb87c | 3143 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3144 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3145 | const int fd = fileno(stdio); |
9217ff3f | 3146 | char mode[8]; |
ecdeb87c | 3147 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3148 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3149 | if (dfd >= 0) { |
3150 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3151 | goto set_this; | |
ecdeb87c NIS |
3152 | } |
3153 | else { | |
6f207bd3 | 3154 | NOOP; |
ecdeb87c NIS |
3155 | /* FIXME: To avoid messy error recovery if dup fails |
3156 | re-use the existing stdio as though flag was not set | |
3157 | */ | |
3158 | } | |
3159 | } | |
9217ff3f NIS |
3160 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3161 | set_this: | |
694c95cf | 3162 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3163 | if(stdio) { |
3164 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3165 | } | |
1751d015 NIS |
3166 | } |
3167 | return f; | |
3168 | } | |
3169 | ||
0d7a5398 NIS |
3170 | static int |
3171 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3172 | { | |
96a5add6 AL |
3173 | PERL_UNUSED_CONTEXT; |
3174 | ||
0d7a5398 | 3175 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3176 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3177 | */ |
36b1c892 AD |
3178 | # if defined(HAS_FDCLOSE) |
3179 | return fdclose(f, NULL) == 0 ? 1 : 0; | |
3180 | # elif defined(__UCLIBC__) | |
ef8eacb8 AT |
3181 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ |
3182 | f->__filedes = -1; | |
3183 | return 1; | |
3184 | # elif defined(__GLIBC__) | |
0d7a5398 | 3185 | /* There may be a better way for GLIBC: |
37725cdc | 3186 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3187 | */ |
3188 | f->_fileno = -1; | |
3189 | return 1; | |
bdea967c | 3190 | # elif defined(__sun) |
f5992bc4 | 3191 | PERL_UNUSED_ARG(f); |
cfedb851 | 3192 | return 0; |
0d7a5398 NIS |
3193 | # elif defined(__hpux) |
3194 | f->__fileH = 0xff; | |
3195 | f->__fileL = 0xff; | |
3196 | return 1; | |
9837d373 | 3197 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3198 | your platform does not have special entry try this one. |
9837d373 NIS |
3199 | [For OSF only have confirmation for Tru64 (alpha) |
3200 | but assume other OSFs will be similar.] | |
37725cdc | 3201 | */ |
9837d373 | 3202 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3203 | f->_file = -1; |
3204 | return 1; | |
3205 | # elif defined(__FreeBSD__) | |
3206 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3207 | - we could insert a dummy func in the _close function entry |
3208 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3209 | */ |
3210 | f->_file = -1; | |
0c49ea6a SU |
3211 | return 1; |
3212 | # elif defined(__OpenBSD__) | |
3213 | /* There may be a better way on OpenBSD: | |
3214 | - we could insert a dummy func in the _close function entry | |
3215 | f->_close = (int (*)(void *)) dummy_close; | |
3216 | */ | |
3217 | f->_file = -1; | |
0d7a5398 | 3218 | return 1; |
59ad941d IZ |
3219 | # elif defined(__EMX__) |
3220 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3221 | f->_handle = -1; | |
3222 | return 1; | |
0d7a5398 NIS |
3223 | # elif defined(__CYGWIN__) |
3224 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3225 | - we could insert a dummy func in the _close function entry |
3226 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3227 | */ |
3228 | f->_file = -1; | |
3229 | return 1; | |
3230 | # elif defined(WIN32) | |
378eeda7 | 3231 | # if defined(UNDER_CE) |
b475b3e6 JH |
3232 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3233 | structure at all | |
3234 | */ | |
0d7a5398 NIS |
3235 | # else |
3236 | f->_file = -1; | |
3237 | # endif | |
3238 | return 1; | |
3239 | # else | |
3240 | #if 0 | |
37725cdc | 3241 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3242 | (which isn't thread safe) instead |
37725cdc | 3243 | */ |
0d7a5398 NIS |
3244 | # error "Don't know how to set FILE.fileno on your platform" |
3245 | #endif | |
8772537c | 3246 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3247 | return 0; |
3248 | # endif | |
3249 | } | |
3250 | ||
1751d015 | 3251 | IV |
f62ce20a | 3252 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3253 | { |
c4420975 | 3254 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3255 | if (!stdio) { |
3256 | errno = EBADF; | |
3257 | return -1; | |
3258 | } | |
9217ff3f | 3259 | else { |
de009b76 | 3260 | const int fd = fileno(stdio); |
0d7a5398 | 3261 | int invalidate = 0; |
bbfd922f | 3262 | IV result = 0; |
1d791a44 | 3263 | int dupfd = -1; |
4ee39169 | 3264 | dSAVEDERRNO; |
a2e578da MHM |
3265 | #ifdef USE_ITHREADS |
3266 | dVAR; | |
3267 | #endif | |
0d7a5398 | 3268 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3269 | /* Socks lib overrides close() but stdio isn't linked to |
3270 | that library (though we are) - so we must call close() | |
3271 | on sockets on stdio's behalf. | |
3272 | */ | |
0d7a5398 NIS |
3273 | int optval; |
3274 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3275 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3276 | invalidate = 1; |
0d7a5398 | 3277 | #endif |
d8723f43 NC |
3278 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3279 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3280 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3281 | trying to close an already closed handle which somehow it still has | |
3282 | a reference to. (via.xs, I'm looking at you). */ | |
3283 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3284 | /* File descriptor still in use */ | |
0d7a5398 | 3285 | invalidate = 1; |
d8723f43 | 3286 | } |
0d7a5398 | 3287 | if (invalidate) { |
6b4ce6c8 AL |
3288 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3289 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3290 | return 0; | |
3291 | if (stdio == stdout || stdio == stderr) | |
3292 | return PerlIO_flush(f); | |
d88f7f65 JH |
3293 | } |
3294 | #ifdef USE_ITHREADS | |
3295 | MUTEX_LOCK(&PL_perlio_mutex); | |
3296 | /* Right. We need a mutex here because for a brief while we | |
3297 | will have the situation that fd is actually closed. Hence if | |
3298 | a second thread were to get into this block, its dup() would | |
3299 | likely return our fd as its dupfd. (after all, it is closed) | |
3300 | Then if we get to the dup2() first, we blat the fd back | |
3301 | (messing up its temporary as a side effect) only for it to | |
3302 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3303 | ||
3304 | /* There is, of course, a race condition, that any other thread | |
3305 | trying to input/output/whatever on this fd will be stuffed | |
3306 | for the duration of this little manoeuvrer. Perhaps we | |
3307 | should hold an IO mutex for the duration of every IO | |
3308 | operation if we know that invalidate doesn't work on this | |
3309 | platform, but that would suck, and could kill performance. | |
3310 | ||
3311 | Except that correctness trumps speed. | |
3312 | Advice from klortho #11912. */ | |
3313 | #endif | |
3314 | if (invalidate) { | |
37725cdc NIS |
3315 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3316 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3317 | fileno slot of the FILE * | |
3318 | */ | |
bbfd922f | 3319 | result = PerlIO_flush(f); |
4ee39169 | 3320 | SAVE_ERRNO; |
6b4ce6c8 | 3321 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3322 | if (!invalidate) { |
6b4ce6c8 | 3323 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3324 | #ifdef USE_ITHREADS |
9bab90c0 | 3325 | if (dupfd < 0) { |
711e8db2 NC |
3326 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3327 | recover from here, or if closing this particular FILE * | |
3328 | is a good idea now. */ | |
3329 | } | |
3330 | #endif | |
3331 | } | |
94ccb807 JH |
3332 | } else { |
3333 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3334 | } |
0d7a5398 | 3335 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3336 | /* We treat error from stdio as success if we invalidated |
3337 | errno may NOT be expected EBADF | |
e8529473 NIS |
3338 | */ |
3339 | if (invalidate && result != 0) { | |
4ee39169 | 3340 | RESTORE_ERRNO; |
0d7a5398 | 3341 | result = 0; |
37725cdc | 3342 | } |
6b4ce6c8 AL |
3343 | #ifdef SOCKS5_VERSION_NAME |
3344 | /* in SOCKS' case, let close() determine return value */ | |
3345 | result = close(fd); | |
3346 | #endif | |
1d791a44 | 3347 | if (dupfd >= 0) { |
0d7a5398 | 3348 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3349 | PerlLIO_close(dupfd); |
d88f7f65 | 3350 | } |
711e8db2 | 3351 | #ifdef USE_ITHREADS |
d88f7f65 | 3352 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3353 | #endif |
9217ff3f | 3354 | return result; |
37725cdc | 3355 | } |
1751d015 NIS |
3356 | } |
3357 | ||
9e353e3b | 3358 | SSize_t |
f62ce20a | 3359 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3360 | { |
abf9167d | 3361 | FILE * s; |
14a5cf38 | 3362 | SSize_t got = 0; |
abf9167d DM |
3363 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3364 | return -1; | |
3365 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3366 | for (;;) { |
3367 | if (count == 1) { | |
3368 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3369 | /* | |
3370 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3371 | * stdio does not do that for fread() | |
3372 | */ | |
de009b76 | 3373 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3374 | if (ch != EOF) { |
3375 | *buf = ch; | |
3376 | got = 1; | |
3377 | } | |
14a5cf38 | 3378 | } |
4d948241 NIS |
3379 | else |
3380 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3381 | if (got == 0 && PerlSIO_ferror(s)) |
3382 | got = -1; | |
42a7a32f | 3383 | if (got >= 0 || errno != EINTR) |
4d948241 | 3384 | break; |
abf9167d DM |
3385 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3386 | return -1; | |
42a7a32f | 3387 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3388 | } |
bdae4172 JH |
3389 | #ifdef __sgi |
3390 | /* Under some circumstances IRIX stdio fgetc() and fread() | |
3391 | * set the errno to ENOENT, which makes no sense according | |
3392 | * to either IRIX or POSIX. [rt.perl.org #123977] */ | |
3393 | if (errno == ENOENT) SETERRNO(0,0); | |
3394 | #endif | |
14a5cf38 | 3395 | return got; |
9e353e3b NIS |
3396 | } |
3397 | ||
3398 | SSize_t | |
f62ce20a | 3399 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3400 | { |
14a5cf38 | 3401 | SSize_t unread = 0; |
c4420975 | 3402 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3403 | |
313e59c8 | 3404 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3405 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3406 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3407 | STDCHAR *base = PerlIO_get_base(f); | |
3408 | SSize_t cnt = PerlIO_get_cnt(f); | |
3409 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3410 | SSize_t avail = ptr - base; | |
3411 | if (avail > 0) { | |
3412 | if (avail > count) { | |
3413 | avail = count; | |
3414 | } | |
3415 | ptr -= avail; | |
3416 | Move(buf-avail,ptr,avail,STDCHAR); | |
3417 | count -= avail; | |
3418 | unread += avail; | |
3419 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3420 | if (PerlSIO_feof(s) && unread >= 0) |
3421 | PerlSIO_clearerr(s); | |
3422 | } | |
3423 | } | |
313e59c8 NIS |
3424 | else |
3425 | #endif | |
3426 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3427 | /* We can get pointer to buffer but not its base |
3428 | Do ungetc() but check chars are ending up in the | |
3429 | buffer | |
3430 | */ | |
3431 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3432 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3433 | while (count > 0) { | |
de009b76 | 3434 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3435 | if (ungetc(ch,s) != ch) { |
3436 | /* ungetc did not work */ | |
3437 | break; | |
3438 | } | |
3439 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3440 | /* Did not change pointer as expected */ | |
375ed12a JH |
3441 | if (fgetc(s) != EOF) /* get char back again */ |
3442 | break; | |
9f7cd136 NIS |
3443 | } |
3444 | /* It worked ! */ | |
3445 | count--; | |
3446 | unread++; | |
93679785 NIS |
3447 | } |
3448 | } | |
3449 | ||
3450 | if (count > 0) { | |
3451 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3452 | } |
3453 | return unread; | |
9e353e3b NIS |
3454 | } |
3455 | ||
3456 | SSize_t | |
f62ce20a | 3457 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3458 | { |
4d948241 | 3459 | SSize_t got; |
abf9167d DM |
3460 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3461 | return -1; | |
4d948241 NIS |
3462 | for (;;) { |
3463 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3464 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3465 | if (got >= 0 || errno != EINTR) |
4d948241 | 3466 | break; |
abf9167d DM |
3467 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3468 | return -1; | |
42a7a32f | 3469 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3470 | } |
3471 | return got; | |
9e353e3b NIS |
3472 | } |
3473 | ||
94a175e1 | 3474 | IV |
f62ce20a | 3475 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3476 | { |
c4420975 | 3477 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3478 | PERL_UNUSED_CONTEXT; |
3479 | ||
94a175e1 | 3480 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3481 | } |
3482 | ||
3483 | Off_t | |
f62ce20a | 3484 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3485 | { |
c4420975 | 3486 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3487 | PERL_UNUSED_CONTEXT; |
3488 | ||
94a175e1 | 3489 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3490 | } |
3491 | ||
3492 | IV | |
f62ce20a | 3493 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3494 | { |
c4420975 | 3495 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3496 | PERL_UNUSED_CONTEXT; |
3497 | ||
14a5cf38 JH |
3498 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3499 | return PerlSIO_fflush(stdio); | |
3500 | } | |
3501 | else { | |
6f207bd3 | 3502 | NOOP; |
88b61e10 | 3503 | #if 0 |
14a5cf38 JH |
3504 | /* |
3505 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3506 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3507 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3508 | * layer read-to-read |
14a5cf38 JH |
3509 | */ |
3510 | /* | |
71200d45 | 3511 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3512 | */ |
4ee39169 | 3513 | dSAVE_ERRNO; |
14a5cf38 | 3514 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3515 | RESTORE_ERRNO; |
88b61e10 | 3516 | #endif |
14a5cf38 JH |
3517 | } |
3518 | return 0; | |
9e353e3b NIS |
3519 | } |
3520 | ||
3521 | IV | |
f62ce20a | 3522 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3523 | { |
96a5add6 AL |
3524 | PERL_UNUSED_CONTEXT; |
3525 | ||
14a5cf38 | 3526 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3527 | } |
3528 | ||
3529 | IV | |
f62ce20a | 3530 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3531 | { |
96a5add6 AL |
3532 | PERL_UNUSED_CONTEXT; |
3533 | ||
263df5f1 | 3534 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3535 | } |
3536 | ||
3537 | void | |
f62ce20a | 3538 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3539 | { |
96a5add6 AL |
3540 | PERL_UNUSED_CONTEXT; |
3541 | ||
14a5cf38 | 3542 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3543 | } |
3544 | ||
3545 | void | |
f62ce20a | 3546 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3547 | { |
96a5add6 AL |
3548 | PERL_UNUSED_CONTEXT; |
3549 | ||
9e353e3b | 3550 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3551 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3552 | #else |
bd61b366 | 3553 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3554 | #endif |
3555 | } | |
3556 | ||
3557 | #ifdef FILE_base | |
3558 | STDCHAR * | |
f62ce20a | 3559 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3560 | { |
c4420975 | 3561 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3562 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3563 | } |
3564 | ||
3565 | Size_t | |
f62ce20a | 3566 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3567 | { |
c4420975 | 3568 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3569 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3570 | } |
3571 | #endif | |
3572 | ||
3573 | #ifdef USE_STDIO_PTR | |
3574 | STDCHAR * | |
f62ce20a | 3575 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3576 | { |
c4420975 | 3577 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3578 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3579 | } |
3580 | ||
3581 | SSize_t | |
f62ce20a | 3582 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3583 | { |
c4420975 | 3584 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3585 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3586 | } |
3587 | ||
3588 | void | |
f62ce20a | 3589 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3590 | { |
c4420975 | 3591 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3592 | if (ptr != NULL) { |
9e353e3b | 3593 | #ifdef STDIO_PTR_LVALUE |
46f05249 JH |
3594 | /* This is a long-standing infamous mess. The root of the |
3595 | * problem is that one cannot know the signedness of char, and | |
3596 | * more precisely the signedness of FILE._ptr. The following | |
3597 | * things have been tried, and they have all failed (across | |
3598 | * different compilers (remember that core needs to to build | |
3599 | * also with c++) and compiler options: | |
3600 | * | |
3601 | * - casting the RHS to (void*) -- works in *some* places | |
3602 | * - casting the LHS to (void*) -- totally unportable | |
3603 | * | |
3604 | * So let's try silencing the warning at least for gcc. */ | |
3605 | GCC_DIAG_IGNORE(-Wpointer-sign); | |
d06fc7d4 | 3606 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
46f05249 | 3607 | GCC_DIAG_RESTORE; |
9e353e3b | 3608 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3609 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3610 | #endif |
3611 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3612 | /* |
71200d45 | 3613 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3614 | */ |
3615 | return; | |
9e353e3b | 3616 | #endif |
22569500 | 3617 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3618 | PerlProc_abort(); |
22569500 | 3619 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3620 | } |
3621 | /* | |
71200d45 | 3622 | * Now (or only) set cnt |
14a5cf38 | 3623 | */ |
9e353e3b | 3624 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3625 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3626 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3627 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3628 | PerlSIO_set_ptr(stdio, |
3629 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3630 | cnt)); | |
22569500 | 3631 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3632 | PerlProc_abort(); |
22569500 NIS |
3633 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3634 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3635 | } |
3636 | ||
93679785 | 3637 | |
9e353e3b NIS |
3638 | #endif |
3639 | ||
93679785 NIS |
3640 | IV |
3641 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3642 | { | |
abf9167d | 3643 | FILE * stdio; |
93679785 | 3644 | int c; |
96a5add6 | 3645 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3646 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3647 | return -1; | |
3648 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3649 | |
93679785 NIS |
3650 | /* |
3651 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3652 | */ | |
3653 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3654 | if (PerlSIO_fflush(stdio) != 0) | |
3655 | return EOF; | |
3656 | } | |
f3be3723 BL |
3657 | for (;;) { |
3658 | c = PerlSIO_fgetc(stdio); | |
3659 | if (c != EOF) | |
3660 | break; | |
3661 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3662 | return EOF; | |
abf9167d DM |
3663 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3664 | return -1; | |
f3be3723 BL |
3665 | SETERRNO(0,0); |
3666 | } | |
93679785 NIS |
3667 | |
3668 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3669 | |
3670 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3671 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3672 | /* Fake ungetc() to the real buffer in case system's ungetc |
3673 | goes elsewhere | |
3674 | */ | |
3675 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3676 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3677 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3678 | if (ptr == base+1) { | |
3679 | *--ptr = (STDCHAR) c; | |
3680 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3681 | if (PerlSIO_feof(stdio)) | |
3682 | PerlSIO_clearerr(stdio); | |
3683 | return 0; | |
3684 | } | |
3685 | } | |
313e59c8 NIS |
3686 | else |
3687 | #endif | |
3688 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3689 | STDCHAR ch = c; |
3690 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3691 | return 0; | |
3692 | } | |
3693 | } | |
93679785 NIS |
3694 | #endif |
3695 | ||
93679785 | 3696 | /* If buffer snoop scheme above fails fall back to |
9f7cd136 | 3697 | using ungetc(). |
93679785 NIS |
3698 | */ |
3699 | if (PerlSIO_ungetc(c, stdio) != c) | |
3700 | return EOF; | |
5876737a | 3701 | |
93679785 NIS |
3702 | return 0; |
3703 | } | |
3704 | ||
3705 | ||
3706 | ||
27da23d5 | 3707 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3708 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3709 | "stdio", |
3710 | sizeof(PerlIOStdio), | |
86e05cf2 | 3711 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3712 | PerlIOStdio_pushed, |
2376d97d | 3713 | PerlIOBase_popped, |
14a5cf38 | 3714 | PerlIOStdio_open, |
86e05cf2 | 3715 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3716 | NULL, |
3717 | PerlIOStdio_fileno, | |
71200d45 | 3718 | PerlIOStdio_dup, |
14a5cf38 JH |
3719 | PerlIOStdio_read, |
3720 | PerlIOStdio_unread, | |
3721 | PerlIOStdio_write, | |
3722 | PerlIOStdio_seek, | |
3723 | PerlIOStdio_tell, | |
3724 | PerlIOStdio_close, | |
3725 | PerlIOStdio_flush, | |
3726 | PerlIOStdio_fill, | |
3727 | PerlIOStdio_eof, | |
3728 | PerlIOStdio_error, | |
3729 | PerlIOStdio_clearerr, | |
3730 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3731 | #ifdef FILE_base |
14a5cf38 JH |
3732 | PerlIOStdio_get_base, |
3733 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3734 | #else |
14a5cf38 JH |
3735 | NULL, |
3736 | NULL, | |
9e353e3b NIS |
3737 | #endif |
3738 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3739 | PerlIOStdio_get_ptr, |
3740 | PerlIOStdio_get_cnt, | |
15b61c98 | 3741 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3742 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3743 | # else |
3744 | NULL, | |
3745 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3746 | #else | |
3747 | NULL, | |
14a5cf38 JH |
3748 | NULL, |
3749 | NULL, | |
15b61c98 | 3750 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3751 | }; |
3752 | ||
b9d6bf13 JH |
3753 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3754 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3755 | FILE * |
81428673 | 3756 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3757 | { |
e87a358a | 3758 | dTHX; |
81428673 NIS |
3759 | FILE *stdio = NULL; |
3760 | if (PerlIOValid(f)) { | |
3761 | char buf[8]; | |
375ed12a JH |
3762 | int fd = PerlIO_fileno(f); |
3763 | if (fd < 0) { | |
3764 | return NULL; | |
3765 | } | |
81428673 NIS |
3766 | PerlIO_flush(f); |
3767 | if (!mode || !*mode) { | |
3768 | mode = PerlIO_modestr(f, buf); | |
3769 | } | |
3770 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3771 | if (stdio) { | |
3772 | PerlIOl *l = *f; | |
9f75cc58 | 3773 | PerlIO *f2; |
81428673 NIS |
3774 | /* De-link any lower layers so new :stdio sticks */ |
3775 | *f = NULL; | |
a0714e2c | 3776 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3777 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3778 | s->stdio = stdio; |
6b54a403 | 3779 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3780 | /* Link previous lower layers under new one */ |
3781 | *PerlIONext(f) = l; | |
3782 | } | |
3783 | else { | |
3784 | /* restore layers list */ | |
3785 | *f = l; | |
3786 | } | |
a33cf58c | 3787 | } |
14a5cf38 JH |
3788 | } |
3789 | return stdio; | |
9e353e3b NIS |
3790 | } |
3791 | ||
81428673 | 3792 | |
9e353e3b NIS |
3793 | FILE * |
3794 | PerlIO_findFILE(PerlIO *f) | |
3795 | { | |
14a5cf38 | 3796 | PerlIOl *l = *f; |
bbbc33d0 | 3797 | FILE *stdio; |
14a5cf38 JH |
3798 | while (l) { |
3799 | if (l->tab == &PerlIO_stdio) { | |
3800 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3801 | return s->stdio; | |
3802 | } | |
3803 | l = *PerlIONext(&l); | |
f7e7eb72 | 3804 | } |
4b069b44 | 3805 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3806 | /* However, we're not really exporting a FILE * to someone else (who |
3807 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3808 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3809 | descriptor. We have to do this, because if the loop above returns you |
3810 | the FILE *, then *it* didn't increase any reference count. So there's | |
3811 | only one way to be consistent. */ | |
3812 | stdio = PerlIO_exportFILE(f, NULL); | |
3813 | if (stdio) { | |
3814 | const int fd = fileno(stdio); | |
3815 | if (fd >= 0) | |
3816 | PerlIOUnix_refcnt_dec(fd); | |
3817 | } | |
3818 | return stdio; | |
9e353e3b NIS |
3819 | } |
3820 | ||
b9d6bf13 | 3821 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3822 | void |
3823 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3824 | { | |
22569500 NIS |
3825 | PerlIOl *l; |
3826 | while ((l = *p)) { | |
3827 | if (l->tab == &PerlIO_stdio) { | |
3828 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3829 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3830 | const int fd = fileno(f); |
3831 | if (fd >= 0) | |
3832 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3833 | { |
3834 | dTHX; | |
3835 | PerlIO_pop(aTHX_ p); | |
3836 | } | |
22569500 NIS |
3837 | return; |
3838 | } | |
3839 | } | |
3840 | p = PerlIONext(p); | |
3841 | } | |
3842 | return; | |
9e353e3b NIS |
3843 | } |
3844 | ||
3845 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3846 | /* |
71200d45 | 3847 | * perlio buffer layer |
14a5cf38 | 3848 | */ |
9e353e3b | 3849 | |
5e2ab84b | 3850 | IV |
2dc2558e | 3851 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3852 | { |
14a5cf38 | 3853 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3854 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3855 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3856 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3857 | } | |
4b069b44 | 3858 | if (*PerlIONext(f)) { |
de009b76 | 3859 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3860 | if (posn != (Off_t) - 1) { |
3861 | b->posn = posn; | |
3862 | } | |
14a5cf38 | 3863 | } |
2dc2558e | 3864 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3865 | } |
3866 | ||
9e353e3b | 3867 | PerlIO * |
14a5cf38 JH |
3868 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3869 | IV n, const char *mode, int fd, int imode, int perm, | |
3870 | PerlIO *f, int narg, SV **args) | |
3871 | { | |
04892f78 | 3872 | if (PerlIOValid(f)) { |
14a5cf38 | 3873 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3874 | PerlIO_funcs *tab = |
3875 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3876 | if (tab && tab->Open) | |
3877 | next = | |
3878 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3879 | next, narg, args); | |
2dc2558e | 3880 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3881 | return NULL; |
3882 | } | |
3883 | } | |
3884 | else { | |
04892f78 | 3885 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3886 | int init = 0; |
3b6c1aba | 3887 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3888 | init = 1; |
3889 | /* | |
71200d45 | 3890 | * mode++; |
14a5cf38 JH |
3891 | */ |
3892 | } | |
67363c0d JH |
3893 | if (tab && tab->Open) |
3894 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3895 | f, narg, args); | |
3896 | else | |
3897 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3898 | if (f) { |
22569500 | 3899 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3900 | /* |
3901 | * if push fails during open, open fails. close will pop us. | |
3902 | */ | |
3903 | PerlIO_close (f); | |
3904 | return NULL; | |
3905 | } else { | |
3906 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3907 | if (init && fd == 2) { |
3908 | /* | |
3909 | * Initial stderr is unbuffered | |
3910 | */ | |
3911 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3912 | } | |
23b84778 IZ |
3913 | #ifdef PERLIO_USING_CRLF |
3914 | # ifdef PERLIO_IS_BINMODE_FD | |
3915 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3916 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3917 | else |
3918 | # endif | |
3919 | /* | |
3920 | * do something about failing setmode()? --jhi | |
3921 | */ | |
3922 | PerlLIO_setmode(fd, O_BINARY); | |
3923 | #endif | |
8c8488cd | 3924 | #ifdef VMS |
8c8488cd CB |
3925 | /* Enable line buffering with record-oriented regular files |
3926 | * so we don't introduce an extraneous record boundary when | |
3927 | * the buffer fills up. | |
3928 | */ | |
3929 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3930 | Stat_t st; | |
3931 | if (PerlLIO_fstat(fd, &st) == 0 | |
3932 | && S_ISREG(st.st_mode) | |
3933 | && (st.st_fab_rfm == FAB$C_VAR | |
3934 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3935 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3936 | } | |
3937 | } | |
3938 | #endif | |
14a5cf38 JH |
3939 | } |
3940 | } | |
ee518936 | 3941 | } |
14a5cf38 | 3942 | return f; |
9e353e3b NIS |
3943 | } |
3944 | ||
14a5cf38 JH |
3945 | /* |
3946 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3947 | * read or write state. For write state, we put the postponed data through |
3948 | * the next layers. For read state, we seek() the next layers to the | |
3949 | * offset given by current position in the buffer, and discard the buffer | |
3950 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3951 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3952 | */ |
9e353e3b | 3953 | IV |
f62ce20a | 3954 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3955 | { |
dcda55fc | 3956 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3957 | int code = 0; |
04892f78 | 3958 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3959 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3960 | /* | |
71200d45 | 3961 | * write() the buffer |
14a5cf38 | 3962 | */ |
de009b76 AL |
3963 | const STDCHAR *buf = b->buf; |
3964 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3965 | while (p < b->ptr) { |
3966 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3967 | if (count > 0) { | |
3968 | p += count; | |
3969 | } | |
3970 | else if (count < 0 || PerlIO_error(n)) { | |
3971 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 3972 | PerlIO_save_errno(f); |
14a5cf38 JH |
3973 | code = -1; |
3974 | break; | |
3975 | } | |
3976 | } | |
3977 | b->posn += (p - buf); | |
3978 | } | |
3979 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3980 | STDCHAR *buf = PerlIO_get_base(f); | |
3981 | /* | |
71200d45 | 3982 | * Note position change |
14a5cf38 JH |
3983 | */ |
3984 | b->posn += (b->ptr - buf); | |
3985 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3986 | /* We did not consume all of it - try and seek downstream to |
3987 | our logical position | |
14a5cf38 | 3988 | */ |
4b069b44 | 3989 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3990 | /* Reload n as some layers may pop themselves on seek */ |
3991 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3992 | } |
ba5c3fe9 | 3993 | else { |
4b069b44 NIS |
3994 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3995 | data is lost for good - so return saying "ok" having undone | |
3996 | the position adjust | |
3997 | */ | |
3998 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3999 | return code; |
4000 | } | |
14a5cf38 JH |
4001 | } |
4002 | } | |
4003 | b->ptr = b->end = b->buf; | |
4004 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 4005 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 4006 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
4007 | code = -1; |
4008 | return code; | |
6f9d8c32 NIS |
4009 | } |
4010 | ||
93c2c2ec IZ |
4011 | /* This discards the content of the buffer after b->ptr, and rereads |
4012 | * the buffer from the position off in the layer downstream; here off | |
4013 | * is at offset corresponding to b->ptr - b->buf. | |
4014 | */ | |
06da4f11 | 4015 | IV |
f62ce20a | 4016 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 4017 | { |
dcda55fc | 4018 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4019 | PerlIO *n = PerlIONext(f); |
4020 | SSize_t avail; | |
4021 | /* | |
4b069b44 NIS |
4022 | * Down-stream flush is defined not to loose read data so is harmless. |
4023 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 4024 | */ |
93c2c2ec | 4025 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
4026 | return -1; |
4027 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 4028 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
4029 | |
4030 | if (!b->buf) | |
22569500 | 4031 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 4032 | |
0f0eef27 | 4033 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4034 | |
14a5cf38 | 4035 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4036 | |
4037 | if (!PerlIOValid(n)) { | |
4038 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4039 | return -1; | |
4040 | } | |
4041 | ||
14a5cf38 JH |
4042 | if (PerlIO_fast_gets(n)) { |
4043 | /* | |
04892f78 | 4044 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4045 | * ->Read() because that will loop till it gets what we asked for |
4046 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4047 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4048 | */ |
4049 | avail = PerlIO_get_cnt(n); | |
4050 | if (avail <= 0) { | |
4051 | avail = PerlIO_fill(n); | |
4052 | if (avail == 0) | |
4053 | avail = PerlIO_get_cnt(n); | |
4054 | else { | |
4055 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4056 | avail = 0; | |
4057 | } | |
4058 | } | |
4059 | if (avail > 0) { | |
4060 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4061 | const SSize_t cnt = avail; |
eb160463 | 4062 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4063 | avail = b->bufsiz; |
4064 | Copy(ptr, b->buf, avail, STDCHAR); | |
4065 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4066 | } | |
4067 | } | |
4068 | else { | |
4069 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4070 | } | |
4071 | if (avail <= 0) { | |
4072 | if (avail == 0) | |
4073 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4074 | else | |
0ea86a10 | 4075 | { |
14a5cf38 | 4076 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
0ea86a10 FC |
4077 | PerlIO_save_errno(f); |
4078 | } | |
14a5cf38 JH |
4079 | return -1; |
4080 | } | |
4081 | b->end = b->buf + avail; | |
4082 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4083 | return 0; | |
06da4f11 NIS |
4084 | } |
4085 | ||
6f9d8c32 | 4086 | SSize_t |
f62ce20a | 4087 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4088 | { |
04892f78 | 4089 | if (PerlIOValid(f)) { |
dcda55fc | 4090 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4091 | if (!b->ptr) |
4092 | PerlIO_get_base(f); | |
f62ce20a | 4093 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4094 | } |
4095 | return 0; | |
6f9d8c32 NIS |
4096 | } |
4097 | ||
9e353e3b | 4098 | SSize_t |
f62ce20a | 4099 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4100 | { |
14a5cf38 | 4101 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4102 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4103 | SSize_t unread = 0; |
4104 | SSize_t avail; | |
4105 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4106 | PerlIO_flush(f); | |
4107 | if (!b->buf) | |
4108 | PerlIO_get_base(f); | |
4109 | if (b->buf) { | |
4110 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4111 | /* | |
4112 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4113 | * which have been read back to buffer start |
14a5cf38 JH |
4114 | */ |
4115 | avail = (b->ptr - b->buf); | |
4116 | } | |
4117 | else { | |
4118 | /* | |
4119 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4120 | * unread |
14a5cf38 JH |
4121 | */ |
4122 | avail = b->bufsiz; | |
4123 | b->end = b->buf + avail; | |
4124 | b->ptr = b->end; | |
4125 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4126 | /* | |
71200d45 | 4127 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4128 | */ |
4129 | b->posn -= b->bufsiz; | |
4130 | } | |
94e529cc | 4131 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4132 | /* |
71200d45 | 4133 | * If we have space for more than count, just move count |
14a5cf38 JH |
4134 | */ |
4135 | avail = count; | |
4136 | } | |
4137 | if (avail > 0) { | |
4138 | b->ptr -= avail; | |
4139 | buf -= avail; | |
4140 | /* | |
4141 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4142 | * there |
14a5cf38 JH |
4143 | */ |
4144 | if (buf != b->ptr) { | |
4145 | Copy(buf, b->ptr, avail, STDCHAR); | |
4146 | } | |
4147 | count -= avail; | |
4148 | unread += avail; | |
4149 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4150 | } | |
4151 | } | |
93679785 NIS |
4152 | if (count > 0) { |
4153 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4154 | } | |
14a5cf38 | 4155 | return unread; |
760ac839 LW |
4156 | } |
4157 | ||
9e353e3b | 4158 | SSize_t |
f62ce20a | 4159 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4160 | { |
de009b76 | 4161 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4162 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4163 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4164 | Size_t written = 0; |
4165 | if (!b->buf) | |
4166 | PerlIO_get_base(f); | |
4167 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4168 | return 0; | |
0678cb22 NIS |
4169 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4170 | if (PerlIO_flush(f) != 0) { | |
4171 | return 0; | |
4172 | } | |
4173 | } | |
ee56a6b9 CS |
4174 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4175 | flushptr = buf + count; | |
4176 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4177 | --flushptr; | |
4178 | } | |
14a5cf38 JH |
4179 | while (count > 0) { |
4180 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4181 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4182 | avail = count; |
ee56a6b9 CS |
4183 | if (flushptr > buf && flushptr <= buf + avail) |
4184 | avail = flushptr - buf; | |
14a5cf38 | 4185 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4186 | if (avail) { |
4187 | Copy(buf, b->ptr, avail, STDCHAR); | |
4188 | count -= avail; | |
4189 | buf += avail; | |
4190 | written += avail; | |
4191 | b->ptr += avail; | |
4192 | if (buf == flushptr) | |
4193 | PerlIO_flush(f); | |
14a5cf38 JH |
4194 | } |
4195 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4196 | if (PerlIO_flush(f) == -1) |
4197 | return -1; | |
14a5cf38 JH |
4198 | } |
4199 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4200 | PerlIO_flush(f); | |
4201 | return written; | |
9e353e3b NIS |
4202 | } |
4203 | ||
94a175e1 | 4204 | IV |
f62ce20a | 4205 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4206 | { |
14a5cf38 JH |
4207 | IV code; |
4208 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4209 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4210 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4211 | if (code == 0) { | |
de009b76 | 4212 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4213 | b->posn = PerlIO_tell(PerlIONext(f)); |
4214 | } | |
9e353e3b | 4215 | } |
14a5cf38 | 4216 | return code; |
9e353e3b NIS |
4217 | } |
4218 | ||
4219 | Off_t | |
f62ce20a | 4220 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4221 | { |
dcda55fc | 4222 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4223 | /* |
71200d45 | 4224 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4225 | */ |
4226 | Off_t posn = b->posn; | |
37725cdc | 4227 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4228 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4229 | #if 1 | |
4230 | /* As O_APPEND files are normally shared in some sense it is better | |
4231 | to flush : | |
4232 | */ | |
4233 | PerlIO_flush(f); | |
4234 | #else | |
37725cdc | 4235 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4236 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4237 | #endif | |
4238 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4239 | } | |
14a5cf38 JH |
4240 | if (b->buf) { |
4241 | /* | |
71200d45 | 4242 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4243 | */ |
4244 | posn += (b->ptr - b->buf); | |
4245 | } | |
4246 | return posn; | |
9e353e3b NIS |
4247 | } |
4248 | ||
4249 | IV | |
44798d05 NIS |
4250 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4251 | { | |
de009b76 AL |
4252 | const IV code = PerlIOBase_popped(aTHX_ f); |
4253 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4254 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4255 | Safefree(b->buf); | |
4256 | } | |
dcda55fc | 4257 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4258 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4259 | return code; | |
4260 | } | |
4261 | ||
4262 | IV | |
f62ce20a | 4263 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4264 | { |
de009b76 AL |
4265 | const IV code = PerlIOBase_close(aTHX_ f); |
4266 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4267 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4268 | Safefree(b->buf); |
14a5cf38 | 4269 | } |
dcda55fc | 4270 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4271 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4272 | return code; | |
760ac839 LW |
4273 | } |
4274 | ||
9e353e3b | 4275 | STDCHAR * |
f62ce20a | 4276 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4277 | { |
dcda55fc | 4278 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4279 | if (!b->buf) |
4280 | PerlIO_get_base(f); | |
4281 | return b->ptr; | |
9e353e3b NIS |
4282 | } |
4283 | ||
05d1247b | 4284 | SSize_t |
f62ce20a | 4285 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4286 | { |
dcda55fc | 4287 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4288 | if (!b->buf) |
4289 | PerlIO_get_base(f); | |
4290 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4291 | return (b->end - b->ptr); | |
4292 | return 0; | |
9e353e3b NIS |
4293 | } |
4294 | ||
4295 | STDCHAR * | |
f62ce20a | 4296 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4297 | { |
dcda55fc | 4298 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4299 | PERL_UNUSED_CONTEXT; |
4300 | ||
14a5cf38 JH |
4301 | if (!b->buf) { |
4302 | if (!b->bufsiz) | |
1810cd7c | 4303 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4304 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4305 | if (!b->buf) { |
4306 | b->buf = (STDCHAR *) & b->oneword; | |
4307 | b->bufsiz = sizeof(b->oneword); | |
4308 | } | |
dcda55fc | 4309 | b->end = b->ptr = b->buf; |
06da4f11 | 4310 | } |
14a5cf38 | 4311 | return b->buf; |
9e353e3b NIS |
4312 | } |
4313 | ||
4314 | Size_t | |
f62ce20a | 4315 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4316 | { |
dcda55fc | 4317 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4318 | if (!b->buf) |
4319 | PerlIO_get_base(f); | |
4320 | return (b->end - b->buf); | |
9e353e3b NIS |
4321 | } |
4322 | ||
4323 | void | |
f62ce20a | 4324 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4325 | { |
dcda55fc | 4326 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4327 | #ifndef DEBUGGING |
4328 | PERL_UNUSED_ARG(cnt); | |
4329 | #endif | |
14a5cf38 JH |
4330 | if (!b->buf) |
4331 | PerlIO_get_base(f); | |
4332 | b->ptr = ptr; | |
b727803b RGS |
4333 | assert(PerlIO_get_cnt(f) == cnt); |
4334 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4335 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4336 | } |
4337 | ||
71200d45 | 4338 | PerlIO * |
ecdeb87c | 4339 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4340 | { |
ecdeb87c | 4341 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4342 | } |
4343 | ||
4344 | ||
4345 | ||
27da23d5 | 4346 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4347 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4348 | "perlio", |
4349 | sizeof(PerlIOBuf), | |
86e05cf2 | 4350 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4351 | PerlIOBuf_pushed, |
44798d05 | 4352 | PerlIOBuf_popped, |
14a5cf38 | 4353 | PerlIOBuf_open, |
86e05cf2 | 4354 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4355 | NULL, |
4356 | PerlIOBase_fileno, | |
71200d45 | 4357 | PerlIOBuf_dup, |
14a5cf38 JH |
4358 | PerlIOBuf_read, |
4359 | PerlIOBuf_unread, | |
4360 | PerlIOBuf_write, | |
4361 | PerlIOBuf_seek, | |
4362 | PerlIOBuf_tell, | |
4363 | PerlIOBuf_close, | |
4364 | PerlIOBuf_flush, | |
4365 | PerlIOBuf_fill, | |
4366 | PerlIOBase_eof, | |
4367 | PerlIOBase_error, | |
4368 | PerlIOBase_clearerr, | |
4369 | PerlIOBase_setlinebuf, | |
4370 | PerlIOBuf_get_base, | |
4371 | PerlIOBuf_bufsiz, | |
4372 | PerlIOBuf_get_ptr, | |
4373 | PerlIOBuf_get_cnt, | |
4374 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4375 | }; |
4376 | ||
66ecd56b | 4377 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4378 | /* |
71200d45 | 4379 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4380 | */ |
5e2ab84b NIS |
4381 | |
4382 | IV | |
f62ce20a | 4383 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4384 | { |
14a5cf38 | 4385 | /* |
71200d45 | 4386 | * Should never happen |
14a5cf38 JH |
4387 | */ |
4388 | PerlIO_flush(f); | |
4389 | return 0; | |
5e2ab84b NIS |
4390 | } |
4391 | ||
4392 | IV | |
f62ce20a | 4393 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4394 | { |
14a5cf38 | 4395 | /* |
71200d45 | 4396 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4397 | */ |
4398 | PerlIO_flush(f); | |
4399 | return PerlIO_close(f); | |
5e2ab84b NIS |
4400 | } |
4401 | ||
94a175e1 | 4402 | IV |
f62ce20a | 4403 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4404 | { |
14a5cf38 | 4405 | /* |
71200d45 | 4406 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4407 | */ |
4408 | PerlIO_flush(f); | |
4409 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4410 | } |
4411 | ||
4412 | ||
4413 | IV | |
f62ce20a | 4414 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4415 | { |
dcda55fc | 4416 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4417 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4418 | Safefree(b->buf); |
14a5cf38 JH |
4419 | b->buf = NULL; |
4420 | } | |
4421 | PerlIO_pop(aTHX_ f); | |
4422 | return 0; | |
5e2ab84b NIS |
4423 | } |
4424 | ||
4425 | void | |
f62ce20a | 4426 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4427 | { |
14a5cf38 JH |
4428 | if (cnt <= 0) { |
4429 | PerlIO_flush(f); | |
4430 | } | |
4431 | else { | |
f62ce20a | 4432 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4433 | } |
5e2ab84b NIS |
4434 | } |
4435 | ||
4436 | IV | |
2dc2558e | 4437 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4438 | { |
de009b76 | 4439 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4440 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4441 | /* |
71200d45 NIS |
4442 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4443 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4444 | */ |
4445 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4446 | (PerlIOBase(PerlIONext(f))-> | |
4447 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4448 | return code; | |
5e2ab84b NIS |
4449 | } |
4450 | ||
4451 | SSize_t | |
f62ce20a | 4452 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4453 | { |
14a5cf38 JH |
4454 | SSize_t avail = PerlIO_get_cnt(f); |
4455 | SSize_t got = 0; | |
94e529cc | 4456 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4457 | avail = count; |
4458 | if (avail > 0) | |
f62ce20a | 4459 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4460 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4461 | const SSize_t more = |
14a5cf38 JH |
4462 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4463 | if (more >= 0 || got == 0) | |
4464 | got += more; | |
4465 | } | |
4466 | return got; | |
5e2ab84b NIS |
4467 | } |
4468 | ||
27da23d5 | 4469 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4470 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4471 | "pending", |
4472 | sizeof(PerlIOBuf), | |
86e05cf2 | 4473 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4474 | PerlIOPending_pushed, |
44798d05 | 4475 | PerlIOBuf_popped, |
14a5cf38 | 4476 | NULL, |
86e05cf2 | 4477 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4478 | NULL, |
4479 | PerlIOBase_fileno, | |
71200d45 | 4480 | PerlIOBuf_dup, |
14a5cf38 JH |
4481 | PerlIOPending_read, |
4482 | PerlIOBuf_unread, | |
4483 | PerlIOBuf_write, | |
4484 | PerlIOPending_seek, | |
4485 | PerlIOBuf_tell, | |
4486 | PerlIOPending_close, | |
4487 | PerlIOPending_flush, | |
4488 | PerlIOPending_fill, | |
4489 | PerlIOBase_eof, | |
4490 | PerlIOBase_error, | |
4491 | PerlIOBase_clearerr, | |
4492 | PerlIOBase_setlinebuf, | |
4493 | PerlIOBuf_get_base, | |
4494 | PerlIOBuf_bufsiz, | |
4495 | PerlIOBuf_get_ptr, | |
4496 | PerlIOBuf_get_cnt, | |
4497 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4498 | }; |
4499 | ||
4500 | ||
4501 | ||
4502 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4503 | /* |
4504 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4505 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4506 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4507 | * |
4508 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4509 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4510 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4511 | * that it ends at c->nl; these two cases can be distinguished by | |
4512 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4513 | * _unread() and _flush() calls. | |
4514 | * It only matters for read operations. | |
66ecd56b NIS |
4515 | */ |
4516 | ||
14a5cf38 | 4517 | typedef struct { |
22569500 NIS |
4518 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4519 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4520 | * buffer */ |
99efab12 NIS |
4521 | } PerlIOCrlf; |
4522 | ||
ff1e3883 JD |
4523 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4524 | * Otherwise the :crlf layer would always revert back to | |
4525 | * raw mode. | |
4526 | */ | |
4527 | static void | |
4528 | S_inherit_utf8_flag(PerlIO *f) | |
4529 | { | |
4530 | PerlIO *g = PerlIONext(f); | |
4531 | if (PerlIOValid(g)) { | |
4532 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4533 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4534 | } | |
4535 | } | |
4536 | } | |
4537 | ||
f5b9d040 | 4538 | IV |
2dc2558e | 4539 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4540 | { |
14a5cf38 JH |
4541 | IV code; |
4542 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4543 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4544 | #if 0 |
e17bc05a | 4545 | DEBUG_i( |
14a5cf38 | 4546 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4547 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4548 | PerlIOBase(f)->flags); |
e17bc05a | 4549 | ); |
5e2ab84b | 4550 | #endif |
8229d19f | 4551 | { |
5da08ab0 LT |
4552 | /* If the old top layer is a CRLF layer, reactivate it (if |
4553 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4554 | PerlIO *g = PerlIONext(f); |
7826b36f | 4555 | if (PerlIOValid(g)) { |
8229d19f JH |
4556 | PerlIOl *b = PerlIOBase(g); |
4557 | if (b && b->tab == &PerlIO_crlf) { | |
4558 | if (!(b->flags & PERLIO_F_CRLF)) | |
4559 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4560 | S_inherit_utf8_flag(g); |
8229d19f JH |
4561 | PerlIO_pop(aTHX_ f); |
4562 | return code; | |
7826b36f | 4563 | } |
8229d19f JH |
4564 | } |
4565 | } | |
ff1e3883 | 4566 | S_inherit_utf8_flag(f); |
14a5cf38 | 4567 | return code; |
f5b9d040 NIS |
4568 | } |
4569 | ||
4570 | ||
99efab12 | 4571 | SSize_t |
f62ce20a | 4572 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4573 | { |
dcda55fc | 4574 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4575 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4576 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4577 | c->nl = NULL; |
4578 | } | |
4579 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4580 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4581 | else { |
4582 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4583 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4584 | SSize_t unread = 0; | |
4585 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4586 | PerlIO_flush(f); | |
4587 | if (!b->buf) | |
4588 | PerlIO_get_base(f); | |
4589 | if (b->buf) { | |
4590 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4591 | b->end = b->ptr = b->buf + b->bufsiz; | |
4592 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4593 | b->posn -= b->bufsiz; | |
4594 | } | |
4595 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4596 | const int ch = *--buf; |
14a5cf38 JH |
4597 | if (ch == '\n') { |
4598 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4599 | *--(b->ptr) = NATIVE_0xa; |
4600 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4601 | unread++; |
4602 | count--; | |
4603 | } | |
4604 | else { | |
93c2c2ec | 4605 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4606 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4607 | '\r' */ | |
93c2c2ec IZ |
4608 | unread++; |
4609 | count--; | |
14a5cf38 JH |
4610 | } |
4611 | } | |
4612 | else { | |
4613 | *--(b->ptr) = ch; | |
4614 | unread++; | |
4615 | count--; | |
4616 | } | |
4617 | } | |
4618 | } | |
ec1da995 LT |
4619 | if (count > 0) |
4620 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4621 | return unread; |
4622 | } | |
99efab12 NIS |
4623 | } |
4624 | ||
93c2c2ec | 4625 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4626 | SSize_t |
f62ce20a | 4627 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4628 | { |
dcda55fc | 4629 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4630 | if (!b->buf) |
4631 | PerlIO_get_base(f); | |
4632 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4633 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4634 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4635 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4636 | scan: |
76e6dc3a | 4637 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4638 | nl++; |
76e6dc3a | 4639 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4640 | test: |
4641 | if (nl + 1 < b->end) { | |
76e6dc3a | 4642 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4643 | *nl = '\n'; |
4644 | c->nl = nl; | |
4645 | } | |
4646 | else { | |
4647 | /* | |
71200d45 | 4648 | * Not CR,LF but just CR |
14a5cf38 JH |
4649 | */ |
4650 | nl++; | |
4651 | goto scan; | |
4652 | } | |
4653 | } | |
4654 | else { | |
4655 | /* | |
71200d45 | 4656 | * Blast - found CR as last char in buffer |
14a5cf38 | 4657 | */ |
e87a358a | 4658 | |
14a5cf38 JH |
4659 | if (b->ptr < nl) { |
4660 | /* | |
4661 | * They may not care, defer work as long as | |
71200d45 | 4662 | * possible |
14a5cf38 | 4663 | */ |
a0d1d361 | 4664 | c->nl = nl; |
14a5cf38 JH |
4665 | return (nl - b->ptr); |
4666 | } | |
4667 | else { | |
4668 | int code; | |
22569500 | 4669 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4670 | * flush() is concerned */ |
22569500 | 4671 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4672 | /* Note as we have moved buf up flush's |
4673 | posn += ptr-buf | |
4674 | will naturally make posn point at CR | |
4675 | */ | |
22569500 NIS |
4676 | b->bufsiz--; /* Buffer is thus smaller */ |
4677 | code = PerlIO_fill(f); /* Fetch some more */ | |
4678 | b->bufsiz++; /* Restore size for next time */ | |
4679 | b->buf--; /* Point at space */ | |
4680 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4681 | * off */ |
76e6dc3a | 4682 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4683 | if (code == 0) |
22569500 | 4684 | goto test; /* fill() call worked */ |
14a5cf38 | 4685 | /* |
71200d45 | 4686 | * CR at EOF - just fall through |
14a5cf38 | 4687 | */ |
a0d1d361 | 4688 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4689 | } |
4690 | } | |
4691 | } | |
4692 | } | |
4693 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4694 | } | |
4695 | return 0; | |
99efab12 NIS |
4696 | } |
4697 | ||
4698 | void | |
f62ce20a | 4699 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4700 | { |
dcda55fc AL |
4701 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4702 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4703 | if (!b->buf) |
4704 | PerlIO_get_base(f); | |
4705 | if (!ptr) { | |
a0d1d361 | 4706 | if (c->nl) { |
14a5cf38 | 4707 | ptr = c->nl + 1; |
76e6dc3a | 4708 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4709 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4710 | ptr--; |
4711 | } | |
4712 | } | |
14a5cf38 JH |
4713 | else { |
4714 | ptr = b->end; | |
14a5cf38 JH |
4715 | } |
4716 | ptr -= cnt; | |
4717 | } | |
4718 | else { | |
6f207bd3 | 4719 | NOOP; |
3b4bd3fd | 4720 | #if 0 |
14a5cf38 | 4721 | /* |
71200d45 | 4722 | * Test code - delete when it works ... |
14a5cf38 | 4723 | */ |
3b4bd3fd | 4724 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4725 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4726 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4727 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4728 | chk--; |
22569500 | 4729 | } |
14a5cf38 JH |
4730 | chk -= cnt; |
4731 | ||
a0d1d361 | 4732 | if (ptr != chk ) { |
99ef548b | 4733 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4734 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4735 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4736 | } |
99ef548b | 4737 | #endif |
14a5cf38 JH |
4738 | } |
4739 | if (c->nl) { | |
4740 | if (ptr > c->nl) { | |
4741 | /* | |
71200d45 | 4742 | * They have taken what we lied about |
14a5cf38 | 4743 | */ |
76e6dc3a | 4744 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4745 | c->nl = NULL; |
4746 | ptr++; | |
4747 | } | |
4748 | } | |
4749 | b->ptr = ptr; | |
4750 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4751 | } |
4752 | ||
4753 | SSize_t | |
f62ce20a | 4754 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4755 | { |
14a5cf38 | 4756 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4757 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4758 | else { |
dcda55fc | 4759 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4760 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4761 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4762 | if (!b->buf) |
4763 | PerlIO_get_base(f); | |
4764 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4765 | return 0; | |
4766 | while (buf < ebuf) { | |
dcda55fc | 4767 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4768 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4769 | while (buf < ebuf && b->ptr < eptr) { | |
4770 | if (*buf == '\n') { | |
4771 | if ((b->ptr + 2) > eptr) { | |
4772 | /* | |
71200d45 | 4773 | * Not room for both |
14a5cf38 JH |
4774 | */ |
4775 | PerlIO_flush(f); | |
4776 | break; | |
4777 | } | |
4778 | else { | |
76e6dc3a KW |
4779 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4780 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4781 | buf++; |
4782 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4783 | PerlIO_flush(f); | |
4784 | break; | |
4785 | } | |
4786 | } | |
4787 | } | |
4788 | else { | |
dcda55fc | 4789 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4790 | } |
4791 | if (b->ptr >= eptr) { | |
4792 | PerlIO_flush(f); | |
4793 | break; | |
4794 | } | |
4795 | } | |
4796 | } | |
4797 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4798 | PerlIO_flush(f); | |
4799 | return (buf - (STDCHAR *) vbuf); | |
4800 | } | |
99efab12 NIS |
4801 | } |
4802 | ||
4803 | IV | |
f62ce20a | 4804 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4805 | { |
dcda55fc | 4806 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4807 | if (c->nl) { |
76e6dc3a | 4808 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4809 | c->nl = NULL; |
4810 | } | |
f62ce20a | 4811 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4812 | } |
4813 | ||
86e05cf2 NIS |
4814 | IV |
4815 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4816 | { | |
4817 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4818 | /* In text mode - flush any pending stuff and flip it */ | |
4819 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4820 | #ifndef PERLIO_USING_CRLF | |
4821 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4822 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4823 | #endif |
4824 | } | |
4825 | return 0; | |
4826 | } | |
4827 | ||
27da23d5 | 4828 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4829 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4830 | "crlf", |
4831 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4832 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4833 | PerlIOCrlf_pushed, |
44798d05 | 4834 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4835 | PerlIOBuf_open, |
86e05cf2 | 4836 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4837 | NULL, |
4838 | PerlIOBase_fileno, | |
71200d45 | 4839 | PerlIOBuf_dup, |
de009b76 | 4840 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4841 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4842 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4843 | PerlIOBuf_seek, |
4844 | PerlIOBuf_tell, | |
4845 | PerlIOBuf_close, | |
4846 | PerlIOCrlf_flush, | |
4847 | PerlIOBuf_fill, | |
4848 | PerlIOBase_eof, | |
4849 | PerlIOBase_error, | |
4850 | PerlIOBase_clearerr, | |
4851 | PerlIOBase_setlinebuf, | |
4852 | PerlIOBuf_get_base, | |
4853 | PerlIOBuf_bufsiz, | |
4854 | PerlIOBuf_get_ptr, | |
4855 | PerlIOCrlf_get_cnt, | |
4856 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4857 | }; |
4858 | ||
9e353e3b | 4859 | PerlIO * |
e87a358a | 4860 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4861 | { |
a1ea730d | 4862 | if (!PL_perlio) { |
14a5cf38 JH |
4863 | PerlIO_stdstreams(aTHX); |
4864 | } | |
303f2dc3 | 4865 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4866 | } |
4867 | ||
9e353e3b | 4868 | PerlIO * |
e87a358a | 4869 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4870 | { |
a1ea730d | 4871 | if (!PL_perlio) { |
14a5cf38 JH |
4872 | PerlIO_stdstreams(aTHX); |
4873 | } | |
303f2dc3 | 4874 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4875 | } |
4876 | ||
9e353e3b | 4877 | PerlIO * |
e87a358a | 4878 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4879 | { |
a1ea730d | 4880 | if (!PL_perlio) { |
14a5cf38 JH |
4881 | PerlIO_stdstreams(aTHX); |
4882 | } | |
303f2dc3 | 4883 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4884 | } |
4885 | ||
4886 | /*--------------------------------------------------------------------------------------*/ | |
4887 | ||
9e353e3b NIS |
4888 | char * |
4889 | PerlIO_getname(PerlIO *f, char *buf) | |
4890 | { | |
a15cef0c | 4891 | #ifdef VMS |
dbf7dff6 | 4892 | dTHX; |
73d840c0 | 4893 | char *name = NULL; |
7659f319 | 4894 | bool exported = FALSE; |
14a5cf38 | 4895 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4896 | if (!stdio) { |
4897 | stdio = PerlIO_exportFILE(f,0); | |
4898 | exported = TRUE; | |
4899 | } | |
4900 | if (stdio) { | |
14a5cf38 | 4901 | name = fgetname(stdio, buf); |
7659f319 CB |
4902 | if (exported) PerlIO_releaseFILE(f,stdio); |
4903 | } | |
73d840c0 | 4904 | return name; |
a15cef0c | 4905 | #else |
8772537c AL |
4906 | PERL_UNUSED_ARG(f); |
4907 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4908 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4909 | return NULL; |
a15cef0c | 4910 | #endif |
9e353e3b NIS |
4911 | } |
4912 | ||
4913 | ||
4914 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4915 | /* |
4916 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4917 | * terms of above |
14a5cf38 | 4918 | */ |
9e353e3b | 4919 | |
e87a358a NIS |
4920 | #undef PerlIO_fdopen |
4921 | PerlIO * | |
4922 | PerlIO_fdopen(int fd, const char *mode) | |
4923 | { | |
4924 | dTHX; | |
bd61b366 | 4925 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4926 | } |
4927 | ||
4928 | #undef PerlIO_open | |
4929 | PerlIO * | |
4930 | PerlIO_open(const char *path, const char *mode) | |
4931 | { | |
4932 | dTHX; | |
42d9b98d | 4933 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4934 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4935 | } |
4936 | ||
4937 | #undef Perlio_reopen | |
4938 | PerlIO * | |
4939 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4940 | { | |
4941 | dTHX; | |
42d9b98d | 4942 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4943 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4944 | } |
4945 | ||
9e353e3b | 4946 | #undef PerlIO_getc |
6f9d8c32 | 4947 | int |
9e353e3b | 4948 | PerlIO_getc(PerlIO *f) |
760ac839 | 4949 | { |
e87a358a | 4950 | dTHX; |
14a5cf38 | 4951 | STDCHAR buf[1]; |
de009b76 | 4952 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4953 | return (unsigned char) buf[0]; |
4954 | } | |
4955 | return EOF; | |
313ca112 NIS |
4956 | } |
4957 | ||
4958 | #undef PerlIO_ungetc | |
4959 | int | |
4960 | PerlIO_ungetc(PerlIO *f, int ch) | |
4961 | { | |
e87a358a | 4962 | dTHX; |
14a5cf38 JH |
4963 | if (ch != EOF) { |
4964 | STDCHAR buf = ch; | |
4965 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4966 | return ch; | |
4967 | } | |
4968 | return EOF; | |
760ac839 LW |
4969 | } |
4970 | ||
9e353e3b NIS |
4971 | #undef PerlIO_putc |
4972 | int | |
4973 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4974 | { |
e87a358a | 4975 | dTHX; |
14a5cf38 JH |
4976 | STDCHAR buf = ch; |
4977 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4978 | } |
4979 | ||
9e353e3b | 4980 | #undef PerlIO_puts |
760ac839 | 4981 | int |
9e353e3b | 4982 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4983 | { |
e87a358a | 4984 | dTHX; |
dcda55fc | 4985 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4986 | } |
4987 | ||
4988 | #undef PerlIO_rewind | |
4989 | void | |
c78749f2 | 4990 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4991 | { |
e87a358a | 4992 | dTHX; |
14a5cf38 JH |
4993 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4994 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4995 | } |
4996 | ||
4997 | #undef PerlIO_vprintf | |
4998 | int | |
4999 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5000 | { | |
14a5cf38 | 5001 | dTHX; |
53ce71d3 | 5002 | SV * sv; |
b83604b4 | 5003 | const char *s; |
14a5cf38 JH |
5004 | STRLEN len; |
5005 | SSize_t wrote; | |
2cc61e15 | 5006 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5007 | va_list apc; |
5008 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5009 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 5010 | va_end(apc); |
2cc61e15 | 5011 | #else |
53ce71d3 | 5012 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5013 | #endif |
b83604b4 | 5014 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5015 | wrote = PerlIO_write(f, s, len); |
5016 | SvREFCNT_dec(sv); | |
5017 | return wrote; | |
760ac839 LW |
5018 | } |
5019 | ||
5020 | #undef PerlIO_printf | |
6f9d8c32 | 5021 | int |
14a5cf38 | 5022 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5023 | { |
14a5cf38 JH |
5024 | va_list ap; |
5025 | int result; | |
5026 | va_start(ap, fmt); | |
5027 | result = PerlIO_vprintf(f, fmt, ap); | |
5028 | va_end(ap); | |
5029 | return result; | |
760ac839 LW |
5030 | } |
5031 | ||
5032 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5033 | int |
14a5cf38 | 5034 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5035 | { |
e87a358a | 5036 | dTHX; |
14a5cf38 JH |
5037 | va_list ap; |
5038 | int result; | |
5039 | va_start(ap, fmt); | |
5040 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5041 | va_end(ap); | |
5042 | return result; | |
760ac839 LW |
5043 | } |
5044 | ||
5045 | #undef PerlIO_tmpfile | |
5046 | PerlIO * | |
c78749f2 | 5047 | PerlIO_tmpfile(void) |
760ac839 | 5048 | { |
dbf7dff6 | 5049 | #ifndef WIN32 |
2941a2e1 | 5050 | dTHX; |
dbf7dff6 | 5051 | #endif |
2941a2e1 | 5052 | PerlIO *f = NULL; |
2941a2e1 | 5053 | #ifdef WIN32 |
de009b76 | 5054 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5055 | if (fd >= 0) |
5056 | f = PerlIO_fdopen(fd, "w+b"); | |
5057 | #else /* WIN32 */ | |
460c8493 | 5058 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5059 | int fd = -1; |
5060 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 5061 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 5062 | SV * sv = NULL; |
e57270be | 5063 | int old_umask = umask(0177); |
2941a2e1 JH |
5064 | /* |
5065 | * I have no idea how portable mkstemp() is ... NI-S | |
5066 | */ | |
7299ca58 | 5067 | if (tmpdir && *tmpdir) { |
0b99e986 | 5068 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5069 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5070 | sv_catpv(sv, tempname + 4); |
5071 | fd = mkstemp(SvPVX(sv)); | |
5072 | } | |
5073 | if (fd < 0) { | |
e40f8e80 | 5074 | SvREFCNT_dec(sv); |
7299ca58 | 5075 | sv = NULL; |
0b99e986 RGS |
5076 | /* else we try /tmp */ |
5077 | fd = mkstemp(tempname); | |
5078 | } | |
b7561fc9 BF |
5079 | if (fd < 0) { |
5080 | /* Try cwd */ | |
5081 | sv = newSVpvs("."); | |
5082 | sv_catpv(sv, tempname + 4); | |
5083 | fd = mkstemp(SvPVX(sv)); | |
5084 | } | |
60f7fc1e | 5085 | umask(old_umask); |
2941a2e1 JH |
5086 | if (fd >= 0) { |
5087 | f = PerlIO_fdopen(fd, "w+"); | |
5088 | if (f) | |
5089 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5090 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5091 | } |
ef8d46e8 | 5092 | SvREFCNT_dec(sv); |
2941a2e1 | 5093 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5094 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5095 | |
085e731f CB |
5096 | if (stdio) |
5097 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5098 | ||
2941a2e1 JH |
5099 | # endif /* else HAS_MKSTEMP */ |
5100 | #endif /* else WIN32 */ | |
5101 | return f; | |
760ac839 LW |
5102 | } |
5103 | ||
0ea86a10 FC |
5104 | void |
5105 | Perl_PerlIO_save_errno(pTHX_ PerlIO *f) | |
5106 | { | |
5107 | if (!PerlIOValid(f)) | |
5108 | return; | |
5109 | PerlIOBase(f)->err = errno; | |
5110 | #ifdef VMS | |
5111 | PerlIOBase(f)->os_err = vaxc$errno; | |
5112 | #elif defined(OS2) | |
5113 | PerlIOBase(f)->os_err = Perl_rc; | |
5114 | #elif defined(WIN32) | |
5115 | PerlIOBase(f)->os_err = GetLastError(); | |
5116 | #endif | |
5117 | } | |
5118 | ||
5119 | void | |
5120 | Perl_PerlIO_restore_errno(pTHX_ PerlIO *f) | |
5121 | { | |
5122 | if (!PerlIOValid(f)) | |
5123 | return; | |
5124 | SETERRNO(PerlIOBase(f)->err, PerlIOBase(f)->os_err); | |
5125 | #ifdef OS2 | |
5126 | Perl_rc = PerlIOBase(f)->os_err); | |
5127 | #elif defined(WIN32) | |
5128 | SetLastError(PerlIOBase(f)->os_err); | |
5129 | #endif | |
5130 | } | |
5131 | ||
6f9d8c32 NIS |
5132 | #undef HAS_FSETPOS |
5133 | #undef HAS_FGETPOS | |
5134 | ||
760ac839 | 5135 | |
9e353e3b | 5136 | /*======================================================================================*/ |
14a5cf38 | 5137 | /* |
71200d45 NIS |
5138 | * Now some functions in terms of above which may be needed even if we are |
5139 | * not in true PerlIO mode | |
9e353e3b | 5140 | */ |
188f0c84 YO |
5141 | const char * |
5142 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5143 | { | |
8b850bd5 NC |
5144 | const char *direction = NULL; |
5145 | SV *layers; | |
188f0c84 YO |
5146 | /* |
5147 | * Need to supply default layer info from open.pm | |
5148 | */ | |
8b850bd5 NC |
5149 | |
5150 | if (!PL_curcop) | |
5151 | return NULL; | |
5152 | ||
5153 | if (mode && mode[0] != 'r') { | |
5154 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5155 | direction = "open>"; | |
5156 | } else { | |
5157 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5158 | direction = "open<"; | |
188f0c84 | 5159 | } |
8b850bd5 NC |
5160 | if (!direction) |
5161 | return NULL; | |
5162 | ||
20439bc7 | 5163 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5164 | |
5165 | assert(layers); | |
5166 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5167 | } |
5168 | ||
9e353e3b | 5169 | |
760ac839 LW |
5170 | #ifndef HAS_FSETPOS |
5171 | #undef PerlIO_setpos | |
5172 | int | |
766a733e | 5173 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5174 | { |
14a5cf38 | 5175 | if (SvOK(pos)) { |
e1a83e70 DD |
5176 | if (f) { |
5177 | dTHX; | |
5178 | STRLEN len; | |
5179 | const Off_t * const posn = (Off_t *) SvPV(pos, len); | |
5180 | if(len == sizeof(Off_t)) | |
5181 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5182 | } | |
14a5cf38 | 5183 | } |
93189314 | 5184 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5185 | return -1; |
760ac839 | 5186 | } |
c411622e | 5187 | #else |
c411622e | 5188 | #undef PerlIO_setpos |
5189 | int | |
766a733e | 5190 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5191 | { |
14a5cf38 | 5192 | if (SvOK(pos)) { |
e1a83e70 DD |
5193 | if (f) { |
5194 | dTHX; | |
5195 | STRLEN len; | |
5196 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); | |
5197 | if(len == sizeof(Fpos_t)) | |
2d4389e4 | 5198 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
e1a83e70 | 5199 | return fsetpos64(f, fpos); |
d9b3e12d | 5200 | #else |
e1a83e70 | 5201 | return fsetpos(f, fpos); |
d9b3e12d | 5202 | #endif |
14a5cf38 | 5203 | } |
766a733e | 5204 | } |
93189314 | 5205 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5206 | return -1; |
c411622e | 5207 | } |
5208 | #endif | |
760ac839 LW |
5209 | |
5210 | #ifndef HAS_FGETPOS | |
5211 | #undef PerlIO_getpos | |
5212 | int | |
766a733e | 5213 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5214 | { |
14a5cf38 JH |
5215 | dTHX; |
5216 | Off_t posn = PerlIO_tell(f); | |
5217 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5218 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5219 | } |
c411622e | 5220 | #else |
c411622e | 5221 | #undef PerlIO_getpos |
5222 | int | |
766a733e | 5223 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5224 | { |
14a5cf38 JH |
5225 | dTHX; |
5226 | Fpos_t fpos; | |
5227 | int code; | |
2d4389e4 | 5228 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5229 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5230 | #else |
14a5cf38 | 5231 | code = fgetpos(f, &fpos); |
d9b3e12d | 5232 | #endif |
14a5cf38 JH |
5233 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5234 | return code; | |
c411622e | 5235 | } |
5236 | #endif | |
760ac839 | 5237 | |
97cb92d6 | 5238 | #if !defined(HAS_VPRINTF) |
760ac839 LW |
5239 | |
5240 | int | |
c78749f2 | 5241 | vprintf(char *pat, char *args) |
662a7e3f CS |
5242 | { |
5243 | _doprnt(pat, args, stdout); | |
22569500 | 5244 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5245 | * value */ |
662a7e3f CS |
5246 | } |
5247 | ||
5248 | int | |
c78749f2 | 5249 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5250 | { |
5251 | _doprnt(pat, args, fd); | |
22569500 | 5252 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5253 | * value */ |
760ac839 LW |
5254 | } |
5255 | ||
5256 | #endif | |
5257 | ||
db6e00bd DD |
5258 | /* print a failure format string message to stderr and fail exit the process |
5259 | using only libc without depending on any perl data structures being | |
5260 | initialized. | |
5261 | */ | |
5262 | ||
5263 | void | |
5264 | Perl_noperl_die(const char* pat, ...) | |
5265 | { | |
5266 | va_list(arglist); | |
5267 | PERL_ARGS_ASSERT_NOPERL_DIE; | |
5268 | va_start(arglist, pat); | |
5269 | vfprintf(stderr, pat, arglist); | |
5270 | va_end(arglist); | |
5271 | exit(1); | |
5272 | } | |
5273 | ||
9cfa90c0 | 5274 | /* |
14d04a33 | 5275 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5276 | */ |