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; | |
5347602a | 851 | PERL_UNUSED_VAR(items); |
e17bc05a TC |
852 | DEBUG_i( |
853 | if (items) | |
854 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))) ); | |
c9bca74a NIS |
855 | XSRETURN(0); |
856 | } | |
857 | ||
15eb3045 | 858 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 859 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 860 | { |
14a5cf38 JH |
861 | dXSARGS; |
862 | if (items < 2) | |
863 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
864 | else { | |
de009b76 | 865 | STRLEN len; |
46c461b5 | 866 | const char * const name = SvPV_const(ST(1), len); |
f814d560 | 867 | const bool load = (items > 2) ? SvTRUE_NN(ST(2)) : 0; |
46c461b5 | 868 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
869 | ST(0) = |
870 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
871 | &PL_sv_undef; | |
872 | XSRETURN(1); | |
873 | } | |
0c4f7ff0 NIS |
874 | } |
875 | ||
e3f3bf95 NIS |
876 | void |
877 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
878 | { | |
3a1ee7e8 NIS |
879 | if (!PL_known_layers) |
880 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 881 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
e17bc05a | 882 | DEBUG_i( PerlIO_debug("define %s %p\n", tab->name, (void*)tab) ); |
f3862f8b NIS |
883 | } |
884 | ||
1141d9f8 | 885 | int |
fcf2db38 | 886 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 887 | { |
14a5cf38 JH |
888 | if (names) { |
889 | const char *s = names; | |
890 | while (*s) { | |
891 | while (isSPACE(*s) || *s == ':') | |
892 | s++; | |
893 | if (*s) { | |
894 | STRLEN llen = 0; | |
895 | const char *e = s; | |
bd61b366 | 896 | const char *as = NULL; |
14a5cf38 JH |
897 | STRLEN alen = 0; |
898 | if (!isIDFIRST(*s)) { | |
899 | /* | |
900 | * Message is consistent with how attribute lists are | |
901 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 902 | * seen as an invalid separator character. |
14a5cf38 | 903 | */ |
de009b76 | 904 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
905 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
906 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
907 | q, *s, q, s); | |
93189314 | 908 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
909 | return -1; |
910 | } | |
911 | do { | |
912 | e++; | |
0eb30aeb | 913 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
914 | llen = e - s; |
915 | if (*e == '(') { | |
916 | int nesting = 1; | |
917 | as = ++e; | |
918 | while (nesting) { | |
919 | switch (*e++) { | |
920 | case ')': | |
921 | if (--nesting == 0) | |
922 | alen = (e - 1) - as; | |
923 | break; | |
924 | case '(': | |
925 | ++nesting; | |
926 | break; | |
927 | case '\\': | |
928 | /* | |
929 | * It's a nul terminated string, not allowed | |
930 | * to \ the terminating null. Anything other | |
71200d45 | 931 | * character is passed over. |
14a5cf38 JH |
932 | */ |
933 | if (*e++) { | |
934 | break; | |
935 | } | |
936 | /* | |
71200d45 | 937 | * Drop through |
14a5cf38 JH |
938 | */ |
939 | case '\0': | |
940 | e--; | |
a2a5de95 NC |
941 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
942 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
943 | (int) (e - s), s); | |
14a5cf38 JH |
944 | return -1; |
945 | default: | |
946 | /* | |
71200d45 | 947 | * boring. |
14a5cf38 JH |
948 | */ |
949 | break; | |
950 | } | |
951 | } | |
952 | } | |
953 | if (e > s) { | |
46c461b5 | 954 | PerlIO_funcs * const layer = |
14a5cf38 JH |
955 | PerlIO_find_layer(aTHX_ s, llen, 1); |
956 | if (layer) { | |
a951d81d BL |
957 | SV *arg = NULL; |
958 | if (as) | |
959 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 960 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 961 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 962 | SvREFCNT_dec(arg); |
14a5cf38 JH |
963 | } |
964 | else { | |
a2a5de95 NC |
965 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
966 | (int) llen, s); | |
14a5cf38 JH |
967 | return -1; |
968 | } | |
969 | } | |
970 | s = e; | |
971 | } | |
972 | } | |
973 | } | |
974 | return 0; | |
1141d9f8 NIS |
975 | } |
976 | ||
dfebf958 | 977 | void |
fcf2db38 | 978 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 979 | { |
27da23d5 | 980 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 981 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 982 | tab = &PerlIO_crlf; |
846be114 | 983 | #else |
6ce75a77 | 984 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 985 | tab = &PerlIO_stdio; |
846be114 | 986 | #endif |
e17bc05a | 987 | DEBUG_i( PerlIO_debug("Pushing %s\n", tab->name) ); |
0987d6f3 | 988 | PerlIO_list_push(aTHX_ av, (PerlIO_funcs *)tab, &PL_sv_undef); |
dfebf958 NIS |
989 | } |
990 | ||
e3f3bf95 | 991 | SV * |
14a5cf38 | 992 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 993 | { |
14a5cf38 | 994 | return av->array[n].arg; |
e3f3bf95 NIS |
995 | } |
996 | ||
f3862f8b | 997 | PerlIO_funcs * |
14a5cf38 | 998 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 999 | { |
14a5cf38 | 1000 | if (n >= 0 && n < av->cur) { |
e17bc05a TC |
1001 | DEBUG_i( PerlIO_debug("Layer %" IVdf " is %s\n", n, |
1002 | av->array[n].funcs->name) ); | |
14a5cf38 JH |
1003 | return av->array[n].funcs; |
1004 | } | |
1005 | if (!def) | |
1006 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1007 | return def; | |
e3f3bf95 NIS |
1008 | } |
1009 | ||
4ec2216f NIS |
1010 | IV |
1011 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1012 | { | |
8772537c AL |
1013 | PERL_UNUSED_ARG(mode); |
1014 | PERL_UNUSED_ARG(arg); | |
1015 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1016 | if (PerlIOValid(f)) { |
1017 | PerlIO_flush(f); | |
1018 | PerlIO_pop(aTHX_ f); | |
1019 | return 0; | |
1020 | } | |
1021 | return -1; | |
1022 | } | |
1023 | ||
27da23d5 | 1024 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1025 | sizeof(PerlIO_funcs), |
1026 | "pop", | |
1027 | 0, | |
1028 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1029 | PerlIOPop_pushed, | |
1030 | NULL, | |
c0888ace | 1031 | PerlIOBase_open, |
4ec2216f NIS |
1032 | NULL, |
1033 | NULL, | |
1034 | NULL, | |
1035 | NULL, | |
1036 | NULL, | |
1037 | NULL, | |
1038 | NULL, | |
1039 | NULL, | |
de009b76 AL |
1040 | NULL, |
1041 | NULL, | |
4ec2216f NIS |
1042 | NULL, /* flush */ |
1043 | NULL, /* fill */ | |
1044 | NULL, | |
1045 | NULL, | |
1046 | NULL, | |
1047 | NULL, | |
1048 | NULL, /* get_base */ | |
1049 | NULL, /* get_bufsiz */ | |
1050 | NULL, /* get_ptr */ | |
1051 | NULL, /* get_cnt */ | |
1052 | NULL, /* set_ptrcnt */ | |
1053 | }; | |
1054 | ||
fcf2db38 | 1055 | PerlIO_list_t * |
e3f3bf95 NIS |
1056 | PerlIO_default_layers(pTHX) |
1057 | { | |
3a1ee7e8 | 1058 | if (!PL_def_layerlist) { |
284167a5 | 1059 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1060 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1061 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1062 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1063 | #if defined(WIN32) |
27da23d5 | 1064 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1065 | #if 0 |
14a5cf38 | 1066 | osLayer = &PerlIO_win32; |
0c4128ad | 1067 | #endif |
2f8118af | 1068 | #endif |
27da23d5 JH |
1069 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1070 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1071 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1072 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1073 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1074 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1075 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
0987d6f3 TC |
1076 | PerlIO_list_push(aTHX_ PL_def_layerlist, (PerlIO_funcs *)osLayer, |
1077 | &PL_sv_undef); | |
14a5cf38 | 1078 | if (s) { |
3a1ee7e8 | 1079 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1080 | } |
1081 | else { | |
3a1ee7e8 | 1082 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1083 | } |
1141d9f8 | 1084 | } |
3a1ee7e8 NIS |
1085 | if (PL_def_layerlist->cur < 2) { |
1086 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1087 | } |
3a1ee7e8 | 1088 | return PL_def_layerlist; |
e3f3bf95 NIS |
1089 | } |
1090 | ||
0c4f7ff0 NIS |
1091 | void |
1092 | Perl_boot_core_PerlIO(pTHX) | |
1093 | { | |
1094 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1095 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1096 | __FILE__); | |
0c4f7ff0 | 1097 | #endif |
14a5cf38 | 1098 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1099 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1100 | } |
e3f3bf95 NIS |
1101 | |
1102 | PerlIO_funcs * | |
1103 | PerlIO_default_layer(pTHX_ I32 n) | |
1104 | { | |
46c461b5 | 1105 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1106 | if (n < 0) |
1107 | n += av->cur; | |
27da23d5 | 1108 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1109 | } |
1110 | ||
a999f61b NIS |
1111 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1112 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1113 | |
1114 | void | |
1141d9f8 | 1115 | PerlIO_stdstreams(pTHX) |
60382766 | 1116 | { |
a1ea730d | 1117 | if (!PL_perlio) { |
8995e67d | 1118 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1119 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1120 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1121 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1122 | } | |
60382766 NIS |
1123 | } |
1124 | ||
1125 | PerlIO * | |
27da23d5 | 1126 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1127 | { |
16865ff7 | 1128 | VERIFY_HEAD(f); |
2dc2558e | 1129 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1130 | Perl_croak( aTHX_ |
147e3846 | 1131 | "%s (%" UVuf ") does not match %s (%" UVuf ")", |
5cf96513 RB |
1132 | "PerlIO layer function table size", (UV)tab->fsize, |
1133 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1134 | } |
1135 | if (tab->size) { | |
b464bac0 | 1136 | PerlIOl *l; |
2dc2558e | 1137 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1138 | Perl_croak( aTHX_ |
147e3846 | 1139 | "%s (%" UVuf ") smaller than %s (%" UVuf ")", |
5cf96513 RB |
1140 | "PerlIO layer instance size", (UV)tab->size, |
1141 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1142 | } |
1143 | /* Real layer with a data area */ | |
002e75cf JH |
1144 | if (f) { |
1145 | char *temp; | |
1146 | Newxz(temp, tab->size, char); | |
1147 | l = (PerlIOl*)temp; | |
1148 | if (l) { | |
1149 | l->next = *f; | |
1150 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1151 | l->head = ((PerlIOl*)f)->head; |
002e75cf | 1152 | *f = l; |
e17bc05a TC |
1153 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", |
1154 | (void*)f, tab->name, | |
1155 | (mode) ? mode : "(Null)", (void*)arg) ); | |
002e75cf JH |
1156 | if (*l->tab->Pushed && |
1157 | (*l->tab->Pushed) | |
1158 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1159 | PerlIO_pop(aTHX_ f); | |
1160 | return NULL; | |
1161 | } | |
2dc2558e | 1162 | } |
002e75cf JH |
1163 | else |
1164 | return NULL; | |
2dc2558e NIS |
1165 | } |
1166 | } | |
1167 | else if (f) { | |
1168 | /* Pseudo-layer where push does its own stack adjust */ | |
e17bc05a TC |
1169 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1170 | (mode) ? mode : "(Null)", (void*)arg) ); | |
210e727c | 1171 | if (tab->Pushed && |
27da23d5 | 1172 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1173 | return NULL; |
14a5cf38 JH |
1174 | } |
1175 | } | |
1176 | return f; | |
60382766 NIS |
1177 | } |
1178 | ||
81fe74fb LT |
1179 | PerlIO * |
1180 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1181 | IV n, const char *mode, int fd, int imode, int perm, | |
1182 | PerlIO *old, int narg, SV **args) | |
1183 | { | |
1184 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1185 | if (tab && tab->Open) { | |
1186 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1187 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1188 | PerlIO_close(ret); |
1189 | return NULL; | |
1190 | } | |
1191 | return ret; | |
1192 | } | |
1193 | SETERRNO(EINVAL, LIB_INVARG); | |
1194 | return NULL; | |
1195 | } | |
1196 | ||
dfebf958 | 1197 | IV |
86e05cf2 NIS |
1198 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1199 | { | |
1200 | if (PerlIOValid(f)) { | |
1201 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1202 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1203 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1204 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1205 | } | |
1206 | else { | |
1207 | /* Not suitable - pop it */ | |
1208 | PerlIO_pop(aTHX_ f); | |
1209 | } | |
1210 | return 0; | |
1211 | } | |
1212 | return -1; | |
1213 | } | |
1214 | ||
1215 | IV | |
2dc2558e | 1216 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1217 | { |
8772537c AL |
1218 | PERL_UNUSED_ARG(mode); |
1219 | PERL_UNUSED_ARG(arg); | |
1220 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1221 | |
04892f78 | 1222 | if (PerlIOValid(f)) { |
86e05cf2 | 1223 | PerlIO *t; |
de009b76 | 1224 | const PerlIOl *l; |
14a5cf38 | 1225 | PerlIO_flush(f); |
86e05cf2 NIS |
1226 | /* |
1227 | * Strip all layers that are not suitable for a raw stream | |
1228 | */ | |
1229 | t = f; | |
1230 | while (t && (l = *t)) { | |
cc6623a8 | 1231 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1232 | /* Has a handler - normal case */ |
9d97e8b8 | 1233 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1234 | if (*t == l) { |
1235 | /* Layer still there - move down a layer */ | |
1236 | t = PerlIONext(t); | |
1237 | } | |
1238 | } | |
1239 | else { | |
1240 | return -1; | |
1241 | } | |
14a5cf38 JH |
1242 | } |
1243 | else { | |
86e05cf2 NIS |
1244 | /* No handler - pop it */ |
1245 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1246 | } |
1247 | } | |
86e05cf2 | 1248 | if (PerlIOValid(f)) { |
e17bc05a TC |
1249 | DEBUG_i( PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1250 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)") ); | |
86e05cf2 NIS |
1251 | return 0; |
1252 | } | |
14a5cf38 JH |
1253 | } |
1254 | return -1; | |
dfebf958 NIS |
1255 | } |
1256 | ||
ac27b0f5 | 1257 | int |
14a5cf38 | 1258 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1259 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1260 | { |
14a5cf38 JH |
1261 | int code = 0; |
1262 | while (n < max) { | |
8772537c | 1263 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1264 | if (tab) { |
1265 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1266 | code = -1; | |
1267 | break; | |
1268 | } | |
1269 | } | |
1270 | n++; | |
1271 | } | |
1272 | return code; | |
e3f3bf95 NIS |
1273 | } |
1274 | ||
1275 | int | |
ac27b0f5 NIS |
1276 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1277 | { | |
14a5cf38 | 1278 | int code = 0; |
da0fccaa DG |
1279 | ENTER; |
1280 | save_scalar(PL_errgv); | |
53f1b6d2 | 1281 | if (f && names) { |
8772537c | 1282 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1283 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1284 | if (code == 0) { | |
d9dac8cd | 1285 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1286 | } |
3a1ee7e8 | 1287 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1288 | } |
da0fccaa | 1289 | LEAVE; |
14a5cf38 | 1290 | return code; |
ac27b0f5 NIS |
1291 | } |
1292 | ||
f3862f8b | 1293 | |
60382766 | 1294 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1295 | /* |
71200d45 | 1296 | * Given the abstraction above the public API functions |
14a5cf38 | 1297 | */ |
60382766 NIS |
1298 | |
1299 | int | |
f5b9d040 | 1300 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1301 | { |
5347602a DM |
1302 | PERL_UNUSED_ARG(iotype); |
1303 | PERL_UNUSED_ARG(mode); | |
1304 | ||
e17bc05a TC |
1305 | DEBUG_i( |
1306 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, | |
1307 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? | |
1308 | PerlIOBase(f)->tab->name : "(Null)", | |
1309 | iotype, mode, (names) ? names : "(Null)") ); | |
68b5363f | 1310 | |
03c0554d NIS |
1311 | if (names) { |
1312 | /* Do not flush etc. if (e.g.) switching encodings. | |
1313 | if a pushed layer knows it needs to flush lower layers | |
1314 | (for example :unix which is never going to call them) | |
1315 | it can do the flush when it is pushed. | |
1316 | */ | |
1317 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1318 | } | |
1319 | else { | |
86e05cf2 | 1320 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1321 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1322 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1323 | O_BINARY so we can look for it in mode. | |
1324 | */ | |
1325 | if (!(mode & O_BINARY)) { | |
1326 | /* Text mode */ | |
86e05cf2 NIS |
1327 | /* FIXME?: Looking down the layer stack seems wrong, |
1328 | but is a way of reaching past (say) an encoding layer | |
1329 | to flip CRLF-ness of the layer(s) below | |
1330 | */ | |
03c0554d NIS |
1331 | while (*f) { |
1332 | /* Perhaps we should turn on bottom-most aware layer | |
1333 | e.g. Ilya's idea that UNIX TTY could serve | |
1334 | */ | |
cc6623a8 DM |
1335 | if (PerlIOBase(f)->tab && |
1336 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1337 | { | |
03c0554d NIS |
1338 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1339 | /* Not in text mode - flush any pending stuff and flip it */ | |
1340 | PerlIO_flush(f); | |
1341 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1342 | } | |
1343 | /* Only need to turn it on in one layer so we are done */ | |
1344 | return TRUE; | |
ed53a2bb | 1345 | } |
03c0554d | 1346 | f = PerlIONext(f); |
14a5cf38 | 1347 | } |
03c0554d NIS |
1348 | /* Not finding a CRLF aware layer presumably means we are binary |
1349 | which is not what was requested - so we failed | |
1350 | We _could_ push :crlf layer but so could caller | |
1351 | */ | |
1352 | return FALSE; | |
14a5cf38 | 1353 | } |
6ce75a77 | 1354 | #endif |
86e05cf2 NIS |
1355 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1356 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1357 | */ |
a0714e2c | 1358 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1359 | } |
f5b9d040 NIS |
1360 | } |
1361 | ||
f5b9d040 | 1362 | int |
e87a358a | 1363 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1364 | { |
37725cdc | 1365 | if (PerlIOValid(f)) { |
46c461b5 | 1366 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1367 | if (tab && tab->Close) |
1368 | return (*tab->Close)(aTHX_ f); | |
1369 | else | |
1370 | return PerlIOBase_close(aTHX_ f); | |
1371 | } | |
14a5cf38 | 1372 | else { |
93189314 | 1373 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1374 | return -1; |
1375 | } | |
76ced9ad NIS |
1376 | } |
1377 | ||
b931b1d9 | 1378 | int |
e87a358a | 1379 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1380 | { |
de009b76 | 1381 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1382 | while (PerlIOValid(f)) { |
1383 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1384 | if (PerlIO_lockcnt(f)) |
1385 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1386 | f = PerlIONext(f); | |
f6c77cf1 | 1387 | } |
14a5cf38 | 1388 | return code; |
b931b1d9 NIS |
1389 | } |
1390 | ||
b931b1d9 | 1391 | int |
e87a358a | 1392 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1393 | { |
20b7effb | 1394 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1395 | } |
1396 | ||
1141d9f8 | 1397 | |
fcf2db38 | 1398 | static PerlIO_funcs * |
2edd7e44 NIS |
1399 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1400 | { | |
14a5cf38 | 1401 | /* |
71200d45 | 1402 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1403 | */ |
526fd1b4 | 1404 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1405 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1406 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1407 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1408 | if (!f) |
dcbac5bb | 1409 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1410 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1411 | return f; |
1412 | } | |
14a5cf38 JH |
1413 | |
1414 | /* | |
71200d45 | 1415 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1416 | */ |
1417 | switch (SvTYPE(sv)) { | |
1418 | case SVt_PVAV: | |
6a245ed1 | 1419 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1420 | case SVt_PVHV: |
6a245ed1 | 1421 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1422 | case SVt_PVCV: |
6a245ed1 | 1423 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1424 | case SVt_PVGV: |
6a245ed1 | 1425 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1426 | default: |
1427 | return NULL; | |
14a5cf38 | 1428 | } |
2edd7e44 NIS |
1429 | } |
1430 | ||
fcf2db38 | 1431 | PerlIO_list_t * |
14a5cf38 JH |
1432 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1433 | const char *mode, int narg, SV **args) | |
1434 | { | |
1435 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); | |
1436 | int incdef = 1; | |
a1ea730d | 1437 | if (!PL_perlio) |
14a5cf38 JH |
1438 | PerlIO_stdstreams(aTHX); |
1439 | if (narg) { | |
dcda55fc | 1440 | SV * const arg = *args; |
14a5cf38 | 1441 | /* |
71200d45 NIS |
1442 | * If it is a reference but not an object see if we have a handler |
1443 | * for it | |
14a5cf38 | 1444 | */ |
4e0ef342 | 1445 | if (SvROK(arg) && !SvOBJECT(SvRV(arg))) { |
46c461b5 | 1446 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1447 | if (handler) { |
3a1ee7e8 NIS |
1448 | def = PerlIO_list_alloc(aTHX); |
1449 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1450 | incdef = 0; |
1451 | } | |
1452 | /* | |
e934609f | 1453 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1454 | * something sensible else we will just stringfy and open |
71200d45 | 1455 | * resulting string. |
14a5cf38 JH |
1456 | */ |
1457 | } | |
1458 | } | |
9fe371da | 1459 | if (!layers || !*layers) |
11bcd5da | 1460 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1461 | if (layers && *layers) { |
1462 | PerlIO_list_t *av; | |
1463 | if (incdef) { | |
a951d81d | 1464 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1465 | } |
1466 | else { | |
1467 | av = def; | |
1468 | } | |
0cff2cf3 NIS |
1469 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1470 | return av; | |
1471 | } | |
1472 | else { | |
1473 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1474 | return NULL; |
0cff2cf3 | 1475 | } |
14a5cf38 JH |
1476 | } |
1477 | else { | |
1478 | if (incdef) | |
1479 | def->refcnt++; | |
1480 | return def; | |
1481 | } | |
ee518936 NIS |
1482 | } |
1483 | ||
1484 | PerlIO * | |
14a5cf38 JH |
1485 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1486 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1487 | { | |
1488 | if (!f && narg == 1 && *args == &PL_sv_undef) { | |
1489 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1490 | if (!layers || !*layers) |
11bcd5da | 1491 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1492 | if (layers && *layers) |
1493 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1494 | } | |
1495 | } | |
1496 | else { | |
de009b76 | 1497 | PerlIO_list_t *layera; |
14a5cf38 JH |
1498 | IV n; |
1499 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1500 | if (PerlIOValid(f)) { |
14a5cf38 | 1501 | /* |
71200d45 NIS |
1502 | * This is "reopen" - it is not tested as perl does not use it |
1503 | * yet | |
14a5cf38 JH |
1504 | */ |
1505 | PerlIOl *l = *f; | |
3a1ee7e8 | 1506 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1507 | while (l) { |
a951d81d | 1508 | SV *arg = NULL; |
cc6623a8 | 1509 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1510 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1511 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1512 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1513 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1514 | l = *PerlIONext(&l); |
1515 | } | |
1516 | } | |
1517 | else { | |
1518 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1519 | if (!layera) { |
1520 | return NULL; | |
1521 | } | |
14a5cf38 JH |
1522 | } |
1523 | /* | |
71200d45 | 1524 | * Start at "top" of layer stack |
14a5cf38 JH |
1525 | */ |
1526 | n = layera->cur - 1; | |
1527 | while (n >= 0) { | |
46c461b5 | 1528 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1529 | if (t && t->Open) { |
1530 | tab = t; | |
1531 | break; | |
1532 | } | |
1533 | n--; | |
1534 | } | |
1535 | if (tab) { | |
1536 | /* | |
71200d45 | 1537 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1538 | */ |
7cf31beb | 1539 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1540 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1541 | } |
e17bc05a TC |
1542 | DEBUG_i( PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
1543 | tab->name, layers ? layers : "(Null)", mode, fd, | |
1544 | imode, perm, (void*)f, narg, (void*)args) ); | |
210e727c JH |
1545 | if (tab->Open) |
1546 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1547 | f, narg, args); | |
1548 | else { | |
1549 | SETERRNO(EINVAL, LIB_INVARG); | |
1550 | f = NULL; | |
1551 | } | |
14a5cf38 JH |
1552 | if (f) { |
1553 | if (n + 1 < layera->cur) { | |
1554 | /* | |
1555 | * More layers above the one that we used to open - | |
71200d45 | 1556 | * apply them now |
14a5cf38 | 1557 | */ |
d9dac8cd NIS |
1558 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1559 | /* If pushing layers fails close the file */ | |
1560 | PerlIO_close(f); | |
14a5cf38 JH |
1561 | f = NULL; |
1562 | } | |
1563 | } | |
1564 | } | |
1565 | } | |
3a1ee7e8 | 1566 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1567 | } |
1568 | return f; | |
ee518936 | 1569 | } |
b931b1d9 NIS |
1570 | |
1571 | ||
9e353e3b | 1572 | SSize_t |
e87a358a | 1573 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1574 | { |
7918f24d NC |
1575 | PERL_ARGS_ASSERT_PERLIO_READ; |
1576 | ||
b32dd47e | 1577 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1578 | } |
1579 | ||
313ca112 | 1580 | SSize_t |
e87a358a | 1581 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1582 | { |
7918f24d NC |
1583 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1584 | ||
b32dd47e | 1585 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1586 | } |
1587 | ||
9e353e3b | 1588 | SSize_t |
e87a358a | 1589 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1590 | { |
7918f24d NC |
1591 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1592 | ||
b32dd47e | 1593 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1594 | } |
1595 | ||
6f9d8c32 | 1596 | int |
e87a358a | 1597 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1598 | { |
b32dd47e | 1599 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1600 | } |
1601 | ||
9e353e3b | 1602 | Off_t |
e87a358a | 1603 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1604 | { |
b32dd47e | 1605 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1606 | } |
1607 | ||
6f9d8c32 | 1608 | int |
e87a358a | 1609 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1610 | { |
14a5cf38 JH |
1611 | if (f) { |
1612 | if (*f) { | |
de009b76 | 1613 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1614 | |
1615 | if (tab && tab->Flush) | |
f62ce20a | 1616 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1617 | else |
1618 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1619 | } |
1620 | else { | |
e17bc05a | 1621 | DEBUG_i( PerlIO_debug("Cannot flush f=%p\n", (void*)f) ); |
93189314 | 1622 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1623 | return -1; |
1624 | } | |
1625 | } | |
1626 | else { | |
1627 | /* | |
1628 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1629 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1630 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1631 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1632 | * decisions? --jhi |
14a5cf38 | 1633 | */ |
303f2dc3 DM |
1634 | PerlIOl **table = &PL_perlio; |
1635 | PerlIOl *ff; | |
14a5cf38 | 1636 | int code = 0; |
303f2dc3 | 1637 | while ((ff = *table)) { |
14a5cf38 | 1638 | int i; |
303f2dc3 | 1639 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1640 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1641 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1642 | code = -1; |
303f2dc3 | 1643 | ff++; |
14a5cf38 JH |
1644 | } |
1645 | } | |
1646 | return code; | |
1647 | } | |
760ac839 LW |
1648 | } |
1649 | ||
a9c883f6 | 1650 | void |
f62ce20a | 1651 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1652 | { |
303f2dc3 DM |
1653 | PerlIOl **table = &PL_perlio; |
1654 | PerlIOl *f; | |
14a5cf38 JH |
1655 | while ((f = *table)) { |
1656 | int i; | |
303f2dc3 | 1657 | table = (PerlIOl **) (f++); |
14a5cf38 | 1658 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1659 | if (f->next |
1660 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1661 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1662 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1663 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1664 | f++; |
1665 | } | |
a9c883f6 | 1666 | } |
a9c883f6 NIS |
1667 | } |
1668 | ||
06da4f11 | 1669 | int |
e87a358a | 1670 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1671 | { |
b32dd47e | 1672 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1673 | } |
1674 | ||
f3862f8b NIS |
1675 | int |
1676 | PerlIO_isutf8(PerlIO *f) | |
1677 | { | |
1b7a0411 JH |
1678 | if (PerlIOValid(f)) |
1679 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1680 | else | |
1681 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1682 | |
1b7a0411 | 1683 | return -1; |
f3862f8b NIS |
1684 | } |
1685 | ||
6f9d8c32 | 1686 | int |
e87a358a | 1687 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1688 | { |
b32dd47e | 1689 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1690 | } |
1691 | ||
9e353e3b | 1692 | int |
e87a358a | 1693 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1694 | { |
b32dd47e | 1695 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1696 | } |
1697 | ||
9e353e3b | 1698 | void |
e87a358a | 1699 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1700 | { |
b32dd47e | 1701 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1702 | } |
1703 | ||
9e353e3b | 1704 | void |
e87a358a | 1705 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1706 | { |
b32dd47e | 1707 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1708 | } |
1709 | ||
9e353e3b NIS |
1710 | int |
1711 | PerlIO_has_base(PerlIO *f) | |
1712 | { | |
1b7a0411 | 1713 | if (PerlIOValid(f)) { |
46c461b5 | 1714 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1715 | |
1716 | if (tab) | |
1717 | return (tab->Get_base != NULL); | |
1b7a0411 | 1718 | } |
1b7a0411 JH |
1719 | |
1720 | return 0; | |
760ac839 LW |
1721 | } |
1722 | ||
9e353e3b NIS |
1723 | int |
1724 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1725 | { |
d7dfc388 SK |
1726 | if (PerlIOValid(f)) { |
1727 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1728 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1729 | |
d7dfc388 SK |
1730 | if (tab) |
1731 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1732 | } |
14a5cf38 | 1733 | } |
1b7a0411 | 1734 | |
14a5cf38 | 1735 | return 0; |
9e353e3b NIS |
1736 | } |
1737 | ||
9e353e3b NIS |
1738 | int |
1739 | PerlIO_has_cntptr(PerlIO *f) | |
1740 | { | |
04892f78 | 1741 | if (PerlIOValid(f)) { |
46c461b5 | 1742 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1743 | |
1744 | if (tab) | |
1745 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1746 | } |
1b7a0411 | 1747 | |
14a5cf38 | 1748 | return 0; |
9e353e3b NIS |
1749 | } |
1750 | ||
9e353e3b NIS |
1751 | int |
1752 | PerlIO_canset_cnt(PerlIO *f) | |
1753 | { | |
04892f78 | 1754 | if (PerlIOValid(f)) { |
46c461b5 | 1755 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1756 | |
1757 | if (tab) | |
1758 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1759 | } |
1b7a0411 | 1760 | |
14a5cf38 | 1761 | return 0; |
760ac839 LW |
1762 | } |
1763 | ||
888911fc | 1764 | STDCHAR * |
e87a358a | 1765 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1766 | { |
b32dd47e | 1767 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1768 | } |
1769 | ||
b66f3475 | 1770 | SSize_t |
e87a358a | 1771 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1772 | { |
b66f3475 | 1773 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1774 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1775 | } |
1776 | ||
9e353e3b | 1777 | STDCHAR * |
e87a358a | 1778 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1779 | { |
b32dd47e | 1780 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1781 | } |
1782 | ||
b66f3475 | 1783 | SSize_t |
e87a358a | 1784 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1785 | { |
b32dd47e | 1786 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1787 | } |
1788 | ||
9e353e3b | 1789 | void |
b66f3475 | 1790 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1791 | { |
b32dd47e | 1792 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1793 | } |
1794 | ||
9e353e3b | 1795 | void |
b66f3475 | 1796 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1797 | { |
b32dd47e | 1798 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1799 | } |
1800 | ||
4ec2216f | 1801 | |
9e353e3b | 1802 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1803 | /* |
71200d45 | 1804 | * utf8 and raw dummy layers |
14a5cf38 | 1805 | */ |
dfebf958 | 1806 | |
26fb694e | 1807 | IV |
2dc2558e | 1808 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1809 | { |
96a5add6 | 1810 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1811 | PERL_UNUSED_ARG(mode); |
1812 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1813 | if (PerlIOValid(f)) { |
cc6623a8 | 1814 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1815 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1816 | else | |
1817 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1818 | return 0; | |
1819 | } | |
1820 | return -1; | |
26fb694e NIS |
1821 | } |
1822 | ||
27da23d5 | 1823 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1824 | sizeof(PerlIO_funcs), |
14a5cf38 | 1825 | "utf8", |
2dc2558e | 1826 | 0, |
a778d1f5 | 1827 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1828 | PerlIOUtf8_pushed, |
1829 | NULL, | |
c0888ace | 1830 | PerlIOBase_open, |
14a5cf38 JH |
1831 | NULL, |
1832 | NULL, | |
1833 | NULL, | |
1834 | NULL, | |
1835 | NULL, | |
1836 | NULL, | |
1837 | NULL, | |
1838 | NULL, | |
de009b76 AL |
1839 | NULL, |
1840 | NULL, | |
22569500 NIS |
1841 | NULL, /* flush */ |
1842 | NULL, /* fill */ | |
14a5cf38 JH |
1843 | NULL, |
1844 | NULL, | |
1845 | NULL, | |
1846 | NULL, | |
22569500 NIS |
1847 | NULL, /* get_base */ |
1848 | NULL, /* get_bufsiz */ | |
1849 | NULL, /* get_ptr */ | |
1850 | NULL, /* get_cnt */ | |
1851 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1852 | }; |
1853 | ||
27da23d5 | 1854 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1855 | sizeof(PerlIO_funcs), |
14a5cf38 | 1856 | "bytes", |
2dc2558e | 1857 | 0, |
a778d1f5 | 1858 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1859 | PerlIOUtf8_pushed, |
1860 | NULL, | |
c0888ace | 1861 | PerlIOBase_open, |
14a5cf38 JH |
1862 | NULL, |
1863 | NULL, | |
1864 | NULL, | |
1865 | NULL, | |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
1869 | NULL, | |
de009b76 AL |
1870 | NULL, |
1871 | NULL, | |
22569500 NIS |
1872 | NULL, /* flush */ |
1873 | NULL, /* fill */ | |
14a5cf38 JH |
1874 | NULL, |
1875 | NULL, | |
1876 | NULL, | |
1877 | NULL, | |
22569500 NIS |
1878 | NULL, /* get_base */ |
1879 | NULL, /* get_bufsiz */ | |
1880 | NULL, /* get_ptr */ | |
1881 | NULL, /* get_cnt */ | |
1882 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1883 | }; |
1884 | ||
27da23d5 | 1885 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1886 | sizeof(PerlIO_funcs), |
14a5cf38 | 1887 | "raw", |
2dc2558e | 1888 | 0, |
14a5cf38 JH |
1889 | PERLIO_K_DUMMY, |
1890 | PerlIORaw_pushed, | |
1891 | PerlIOBase_popped, | |
ecfd0649 | 1892 | PerlIOBase_open, |
14a5cf38 JH |
1893 | NULL, |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
de009b76 AL |
1901 | NULL, |
1902 | NULL, | |
22569500 NIS |
1903 | NULL, /* flush */ |
1904 | NULL, /* fill */ | |
14a5cf38 JH |
1905 | NULL, |
1906 | NULL, | |
1907 | NULL, | |
1908 | NULL, | |
22569500 NIS |
1909 | NULL, /* get_base */ |
1910 | NULL, /* get_bufsiz */ | |
1911 | NULL, /* get_ptr */ | |
1912 | NULL, /* get_cnt */ | |
1913 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1914 | }; |
1915 | /*--------------------------------------------------------------------------------------*/ | |
1916 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1917 | /* |
71200d45 | 1918 | * "Methods" of the "base class" |
14a5cf38 | 1919 | */ |
9e353e3b NIS |
1920 | |
1921 | IV | |
f62ce20a | 1922 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1923 | { |
04892f78 | 1924 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1925 | } |
1926 | ||
f5b9d040 | 1927 | char * |
81428673 | 1928 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1929 | { |
1930 | char *s = buf; | |
81428673 | 1931 | if (PerlIOValid(f)) { |
de009b76 | 1932 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1933 | if (flags & PERLIO_F_APPEND) { |
1934 | *s++ = 'a'; | |
1935 | if (flags & PERLIO_F_CANREAD) { | |
1936 | *s++ = '+'; | |
1937 | } | |
14a5cf38 | 1938 | } |
81428673 NIS |
1939 | else if (flags & PERLIO_F_CANREAD) { |
1940 | *s++ = 'r'; | |
1941 | if (flags & PERLIO_F_CANWRITE) | |
1942 | *s++ = '+'; | |
1943 | } | |
1944 | else if (flags & PERLIO_F_CANWRITE) { | |
1945 | *s++ = 'w'; | |
1946 | if (flags & PERLIO_F_CANREAD) { | |
1947 | *s++ = '+'; | |
1948 | } | |
14a5cf38 | 1949 | } |
35990314 | 1950 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1951 | if (!(flags & PERLIO_F_CRLF)) |
1952 | *s++ = 'b'; | |
5f1a76d0 | 1953 | #endif |
81428673 | 1954 | } |
14a5cf38 JH |
1955 | *s = '\0'; |
1956 | return buf; | |
f5b9d040 NIS |
1957 | } |
1958 | ||
81428673 | 1959 | |
76ced9ad | 1960 | IV |
2dc2558e | 1961 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1962 | { |
de009b76 | 1963 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1964 | PERL_UNUSED_CONTEXT; |
8772537c | 1965 | PERL_UNUSED_ARG(arg); |
de009b76 | 1966 | |
14a5cf38 JH |
1967 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1968 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 1969 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
1970 | l->flags |= PERLIO_F_FASTGETS; |
1971 | if (mode) { | |
3b6c1aba | 1972 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
1973 | mode++; |
1974 | switch (*mode++) { | |
1975 | case 'r': | |
1976 | l->flags |= PERLIO_F_CANREAD; | |
1977 | break; | |
1978 | case 'a': | |
1979 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
1980 | break; | |
1981 | case 'w': | |
1982 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
1983 | break; | |
1984 | default: | |
93189314 | 1985 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1986 | return -1; |
1987 | } | |
49fc4906 YK |
1988 | #ifdef EBCDIC |
1989 | { | |
1990 | /* The mode variable contains one positional parameter followed by | |
1991 | * optional keyword parameters. The positional parameters must be | |
1992 | * passed as lowercase characters. The keyword parameters can be | |
1993 | * passed in mixed case. They must be separated by commas. Only one | |
1994 | * instance of a keyword can be specified. */ | |
1995 | int comma = 0; | |
1996 | while (*mode) { | |
1997 | switch (*mode++) { | |
1998 | case '+': | |
1999 | if(!comma) | |
2000 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2001 | break; | |
2002 | case 'b': | |
2003 | if(!comma) | |
2004 | l->flags &= ~PERLIO_F_CRLF; | |
2005 | break; | |
2006 | case 't': | |
2007 | if(!comma) | |
2008 | l->flags |= PERLIO_F_CRLF; | |
2009 | break; | |
2010 | case ',': | |
2011 | comma = 1; | |
2012 | break; | |
2013 | default: | |
2014 | break; | |
2015 | } | |
2016 | } | |
2017 | } | |
2018 | #else | |
14a5cf38 JH |
2019 | while (*mode) { |
2020 | switch (*mode++) { | |
2021 | case '+': | |
2022 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2023 | break; | |
2024 | case 'b': | |
2025 | l->flags &= ~PERLIO_F_CRLF; | |
2026 | break; | |
2027 | case 't': | |
2028 | l->flags |= PERLIO_F_CRLF; | |
2029 | break; | |
2030 | default: | |
93189314 | 2031 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2032 | return -1; |
2033 | } | |
2034 | } | |
49fc4906 | 2035 | #endif |
14a5cf38 JH |
2036 | } |
2037 | else { | |
2038 | if (l->next) { | |
2039 | l->flags |= l->next->flags & | |
2040 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2041 | PERLIO_F_APPEND); | |
2042 | } | |
2043 | } | |
5e2ab84b | 2044 | #if 0 |
e17bc05a | 2045 | DEBUG_i( |
14a5cf38 | 2046 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2047 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2048 | l->flags, PerlIO_modestr(f, temp)); |
e17bc05a | 2049 | ); |
5e2ab84b | 2050 | #endif |
14a5cf38 | 2051 | return 0; |
76ced9ad NIS |
2052 | } |
2053 | ||
2054 | IV | |
f62ce20a | 2055 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2056 | { |
96a5add6 | 2057 | PERL_UNUSED_CONTEXT; |
8772537c | 2058 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2059 | return 0; |
760ac839 LW |
2060 | } |
2061 | ||
9e353e3b | 2062 | SSize_t |
f62ce20a | 2063 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2064 | { |
14a5cf38 | 2065 | /* |
71200d45 | 2066 | * Save the position as current head considers it |
14a5cf38 | 2067 | */ |
de009b76 | 2068 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2069 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2070 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2071 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2072 | } |
2073 | ||
f6c77cf1 | 2074 | SSize_t |
f62ce20a | 2075 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2076 | { |
14a5cf38 JH |
2077 | STDCHAR *buf = (STDCHAR *) vbuf; |
2078 | if (f) { | |
263df5f1 JH |
2079 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2080 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2081 | SETERRNO(EBADF, SS_IVCHAN); | |
0ea86a10 | 2082 | PerlIO_save_errno(f); |
263df5f1 JH |
2083 | return 0; |
2084 | } | |
14a5cf38 | 2085 | while (count > 0) { |
93c2c2ec IZ |
2086 | get_cnt: |
2087 | { | |
14a5cf38 JH |
2088 | SSize_t avail = PerlIO_get_cnt(f); |
2089 | SSize_t take = 0; | |
2090 | if (avail > 0) | |
94e529cc | 2091 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2092 | if (take > 0) { |
2093 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2094 | Copy(ptr, buf, take, STDCHAR); | |
2095 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2096 | count -= take; | |
2097 | buf += take; | |
93c2c2ec IZ |
2098 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2099 | goto get_cnt; | |
14a5cf38 JH |
2100 | } |
2101 | if (count > 0 && avail <= 0) { | |
2102 | if (PerlIO_fill(f) != 0) | |
2103 | break; | |
2104 | } | |
93c2c2ec | 2105 | } |
14a5cf38 JH |
2106 | } |
2107 | return (buf - (STDCHAR *) vbuf); | |
2108 | } | |
f6c77cf1 | 2109 | return 0; |
f6c77cf1 NIS |
2110 | } |
2111 | ||
9e353e3b | 2112 | IV |
f62ce20a | 2113 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2114 | { |
96a5add6 | 2115 | PERL_UNUSED_CONTEXT; |
8772537c | 2116 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2117 | return 0; |
9e353e3b NIS |
2118 | } |
2119 | ||
2120 | IV | |
f62ce20a | 2121 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2122 | { |
96a5add6 | 2123 | PERL_UNUSED_CONTEXT; |
8772537c | 2124 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2125 | return -1; |
06da4f11 NIS |
2126 | } |
2127 | ||
2128 | IV | |
f62ce20a | 2129 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2130 | { |
37725cdc NIS |
2131 | IV code = -1; |
2132 | if (PerlIOValid(f)) { | |
2133 | PerlIO *n = PerlIONext(f); | |
2134 | code = PerlIO_flush(f); | |
2135 | PerlIOBase(f)->flags &= | |
2136 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2137 | while (PerlIOValid(n)) { | |
de009b76 | 2138 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2139 | if (tab && tab->Close) { |
2140 | if ((*tab->Close)(aTHX_ n) != 0) | |
2141 | code = -1; | |
2142 | break; | |
2143 | } | |
2144 | else { | |
2145 | PerlIOBase(n)->flags &= | |
2146 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2147 | } | |
2148 | n = PerlIONext(n); | |
2149 | } | |
2150 | } | |
2151 | else { | |
2152 | SETERRNO(EBADF, SS_IVCHAN); | |
2153 | } | |
14a5cf38 | 2154 | return code; |
9e353e3b NIS |
2155 | } |
2156 | ||
2157 | IV | |
f62ce20a | 2158 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2159 | { |
96a5add6 | 2160 | PERL_UNUSED_CONTEXT; |
04892f78 | 2161 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2162 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2163 | } | |
2164 | return 1; | |
9e353e3b NIS |
2165 | } |
2166 | ||
2167 | IV | |
f62ce20a | 2168 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2169 | { |
96a5add6 | 2170 | PERL_UNUSED_CONTEXT; |
04892f78 | 2171 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2172 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2173 | } | |
2174 | return 1; | |
9e353e3b NIS |
2175 | } |
2176 | ||
2177 | void | |
f62ce20a | 2178 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2179 | { |
04892f78 | 2180 | if (PerlIOValid(f)) { |
dcda55fc | 2181 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2182 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2183 | if (PerlIOValid(n)) |
14a5cf38 JH |
2184 | PerlIO_clearerr(n); |
2185 | } | |
9e353e3b NIS |
2186 | } |
2187 | ||
2188 | void | |
f62ce20a | 2189 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2190 | { |
96a5add6 | 2191 | PERL_UNUSED_CONTEXT; |
04892f78 | 2192 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2193 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2194 | } | |
9e353e3b NIS |
2195 | } |
2196 | ||
93a8090d NIS |
2197 | SV * |
2198 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2199 | { | |
2200 | if (!arg) | |
a0714e2c | 2201 | return NULL; |
24d147a6 | 2202 | #ifdef USE_ITHREADS |
93a8090d | 2203 | if (param) { |
a951d81d BL |
2204 | arg = sv_dup(arg, param); |
2205 | SvREFCNT_inc_simple_void_NN(arg); | |
2206 | return arg; | |
93a8090d NIS |
2207 | } |
2208 | else { | |
2209 | return newSVsv(arg); | |
2210 | } | |
2211 | #else | |
1b6737cc | 2212 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2213 | return newSVsv(arg); |
2214 | #endif | |
2215 | } | |
2216 | ||
2217 | PerlIO * | |
ecdeb87c | 2218 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2219 | { |
1b6737cc | 2220 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2221 | if (PerlIOValid(nexto)) { |
de009b76 | 2222 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2223 | if (tab && tab->Dup) |
2224 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2225 | else | |
2226 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2227 | } |
2228 | if (f) { | |
dcda55fc | 2229 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2230 | SV *arg = NULL; |
93a8090d | 2231 | char buf[8]; |
316ebaf2 | 2232 | assert(self); |
e17bc05a TC |
2233 | DEBUG_i(PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2234 | self->name, | |
2235 | (void*)f, (void*)o, (void*)param) ); | |
27e6dabe JH |
2236 | if (self->Getarg) |
2237 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2238 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2239 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2240 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2241 | SvREFCNT_dec(arg); |
93a8090d NIS |
2242 | } |
2243 | return f; | |
2244 | } | |
2245 | ||
27da23d5 | 2246 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2247 | |
8b84d7dd | 2248 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 | 2249 | static void |
ff25d7bc JH |
2250 | S_more_refcounted_fds(pTHX_ const int new_fd) |
2251 | PERL_TSA_REQUIRES(PL_perlio_mutex) | |
2252 | { | |
7a89be66 | 2253 | dVAR; |
22c96fc1 | 2254 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2255 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2256 | int *new_array; |
2257 | ||
dd791c72 JH |
2258 | #ifndef PERL_IMPLICIT_SYS |
2259 | PERL_UNUSED_CONTEXT; | |
2260 | #endif | |
2261 | ||
e17bc05a TC |
2262 | DEBUG_i( PerlIO_debug("More fds - old=%d, need %d, new=%d\n", |
2263 | old_max, new_fd, new_max) ); | |
22c96fc1 NC |
2264 | |
2265 | if (new_fd < old_max) { | |
2266 | return; | |
2267 | } | |
2268 | ||
f4ae5be6 NC |
2269 | assert (new_max > new_fd); |
2270 | ||
eae082a0 JH |
2271 | /* Use plain realloc() since we need this memory to be really |
2272 | * global and visible to all the interpreters and/or threads. */ | |
2273 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2274 | |
2275 | if (!new_array) { | |
8b84d7dd | 2276 | #ifdef USE_ITHREADS |
6cb8cb21 | 2277 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 | 2278 | #endif |
4cbe3a7d | 2279 | croak_no_mem(); |
22c96fc1 NC |
2280 | } |
2281 | ||
2282 | PL_perlio_fd_refcnt_size = new_max; | |
2283 | PL_perlio_fd_refcnt = new_array; | |
2284 | ||
e17bc05a TC |
2285 | DEBUG_i( PerlIO_debug("Zeroing %p, %d\n", |
2286 | (void*)(new_array + old_max), | |
2287 | new_max - old_max) ); | |
22c96fc1 NC |
2288 | |
2289 | Zero(new_array + old_max, new_max - old_max, int); | |
2290 | } | |
2291 | ||
2292 | ||
93a8090d NIS |
2293 | void |
2294 | PerlIO_init(pTHX) | |
2295 | { | |
8b84d7dd | 2296 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2297 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2298 | } |
2299 | ||
168d5872 NIS |
2300 | void |
2301 | PerlIOUnix_refcnt_inc(int fd) | |
2302 | { | |
27da23d5 | 2303 | dTHX; |
22c96fc1 | 2304 | if (fd >= 0) { |
97aff369 | 2305 | dVAR; |
22c96fc1 | 2306 | |
8b84d7dd | 2307 | #ifdef USE_ITHREADS |
6cb8cb21 | 2308 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2309 | #endif |
22c96fc1 NC |
2310 | if (fd >= PL_perlio_fd_refcnt_size) |
2311 | S_more_refcounted_fds(aTHX_ fd); | |
2312 | ||
27da23d5 | 2313 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2314 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2315 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2316 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2317 | fd, PL_perlio_fd_refcnt[fd]); | |
2318 | } | |
e17bc05a TC |
2319 | DEBUG_i( PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", |
2320 | fd, PL_perlio_fd_refcnt[fd]) ); | |
22c96fc1 | 2321 | |
8b84d7dd | 2322 | #ifdef USE_ITHREADS |
6cb8cb21 | 2323 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2324 | #endif |
8b84d7dd | 2325 | } else { |
12605ff9 | 2326 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2327 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2328 | } |
2329 | } | |
2330 | ||
168d5872 NIS |
2331 | int |
2332 | PerlIOUnix_refcnt_dec(int fd) | |
2333 | { | |
2334 | int cnt = 0; | |
22c96fc1 | 2335 | if (fd >= 0) { |
e17bc05a TC |
2336 | #ifdef DEBUGGING |
2337 | dTHX; | |
2338 | #else | |
97aff369 | 2339 | dVAR; |
e17bc05a | 2340 | #endif |
8b84d7dd | 2341 | #ifdef USE_ITHREADS |
6cb8cb21 | 2342 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2343 | #endif |
8b84d7dd | 2344 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2345 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2346 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2347 | fd, PL_perlio_fd_refcnt_size); |
2348 | } | |
2349 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2350 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2351 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2352 | fd, PL_perlio_fd_refcnt[fd]); |
2353 | } | |
27da23d5 | 2354 | cnt = --PL_perlio_fd_refcnt[fd]; |
e17bc05a | 2355 | DEBUG_i( PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt) ); |
8b84d7dd | 2356 | #ifdef USE_ITHREADS |
6cb8cb21 | 2357 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2358 | #endif |
8b84d7dd | 2359 | } else { |
12605ff9 | 2360 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2361 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2362 | } |
2363 | return cnt; | |
2364 | } | |
2365 | ||
2e0cfa16 FC |
2366 | int |
2367 | PerlIOUnix_refcnt(int fd) | |
2368 | { | |
2369 | dTHX; | |
2370 | int cnt = 0; | |
2371 | if (fd >= 0) { | |
2372 | dVAR; | |
2373 | #ifdef USE_ITHREADS | |
2374 | MUTEX_LOCK(&PL_perlio_mutex); | |
2375 | #endif | |
2376 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2377 | /* diag_listed_as: refcnt: fd %d%s */ | |
2378 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2379 | fd, PL_perlio_fd_refcnt_size); | |
2380 | } | |
2381 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2382 | /* diag_listed_as: refcnt: fd %d%s */ | |
2383 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2384 | fd, PL_perlio_fd_refcnt[fd]); | |
2385 | } | |
2386 | cnt = PL_perlio_fd_refcnt[fd]; | |
2387 | #ifdef USE_ITHREADS | |
2388 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2389 | #endif | |
2390 | } else { | |
2391 | /* diag_listed_as: refcnt: fd %d%s */ | |
2392 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2393 | } | |
2394 | return cnt; | |
2395 | } | |
2396 | ||
694c95cf JH |
2397 | void |
2398 | PerlIO_cleanup(pTHX) | |
2399 | { | |
2400 | int i; | |
2401 | #ifdef USE_ITHREADS | |
e17bc05a | 2402 | DEBUG_i( PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX) ); |
9f4bd222 | 2403 | #else |
e17bc05a | 2404 | DEBUG_i( PerlIO_debug("Cleanup layers\n") ); |
694c95cf | 2405 | #endif |
e47547a8 | 2406 | |
694c95cf JH |
2407 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2408 | for (i=0; i < 3; i++) | |
2409 | PerlIOUnix_refcnt_inc(i); | |
2410 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2411 | /* Restore STDIN..STDERR refcount */ | |
2412 | for (i=0; i < 3; i++) | |
2413 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2414 | |
2415 | if (PL_known_layers) { | |
2416 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2417 | PL_known_layers = NULL; | |
2418 | } | |
27da23d5 | 2419 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2420 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2421 | PL_def_layerlist = NULL; | |
2422 | } | |
6cb8cb21 RGS |
2423 | } |
2424 | ||
0934c9d9 | 2425 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2426 | { |
53d44271 | 2427 | dVAR; |
4f3da17a DM |
2428 | #if 0 |
2429 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2430 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2431 | being present (at least in win32) :-(. | |
2432 | Disable for now. | |
2433 | */ | |
6cb8cb21 RGS |
2434 | #ifdef DEBUGGING |
2435 | { | |
2436 | /* By now all filehandles should have been closed, so any | |
2437 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2438 | * errors. */ | |
77db880c JH |
2439 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2440 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2441 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2442 | int i; |
2443 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2444 | if (PL_perlio_fd_refcnt[i]) { |
2445 | const STRLEN len = | |
2446 | my_snprintf(buf, sizeof(buf), | |
2447 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2448 | i, PL_perlio_fd_refcnt[i]); | |
2449 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2450 | } | |
6cb8cb21 RGS |
2451 | } |
2452 | } | |
2453 | #endif | |
4f3da17a | 2454 | #endif |
eae082a0 JH |
2455 | /* Not bothering with PL_perlio_mutex since by now |
2456 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2457 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2458 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2459 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2460 | PL_perlio_fd_refcnt = NULL; |
2461 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2462 | } |
694c95cf JH |
2463 | } |
2464 | ||
9e353e3b | 2465 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2466 | /* |
71200d45 | 2467 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2468 | */ |
9e353e3b | 2469 | |
14a5cf38 | 2470 | typedef struct { |
22569500 NIS |
2471 | struct _PerlIO base; /* The generic part */ |
2472 | int fd; /* UNIX like file descriptor */ | |
2473 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2474 | } PerlIOUnix; |
2475 | ||
abf9167d DM |
2476 | static void |
2477 | S_lockcnt_dec(pTHX_ const void* f) | |
2478 | { | |
dd791c72 JH |
2479 | #ifndef PERL_IMPLICIT_SYS |
2480 | PERL_UNUSED_CONTEXT; | |
2481 | #endif | |
abf9167d DM |
2482 | PerlIO_lockcnt((PerlIO*)f)--; |
2483 | } | |
2484 | ||
2485 | ||
2486 | /* call the signal handler, and if that handler happens to clear | |
2487 | * this handle, free what we can and return true */ | |
2488 | ||
2489 | static bool | |
2490 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2491 | ENTER; | |
2492 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2493 | PerlIO_lockcnt(f)++; | |
2494 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2495 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2496 | LEAVE; | |
abf9167d | 2497 | return 0; |
be48bbe8 | 2498 | } |
abf9167d DM |
2499 | /* we've just run some perl-level code that could have done |
2500 | * anything, including closing the file or clearing this layer. | |
2501 | * If so, free any lower layers that have already been | |
2502 | * cleared, then return an error. */ | |
2503 | while (PerlIOValid(f) && | |
2504 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2505 | { | |
2506 | const PerlIOl *l = *f; | |
2507 | *f = l->next; | |
2508 | Safefree(l); | |
2509 | } | |
be48bbe8 | 2510 | LEAVE; |
abf9167d DM |
2511 | return 1; |
2512 | } | |
2513 | ||
6f9d8c32 | 2514 | int |
9e353e3b | 2515 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2516 | { |
14a5cf38 | 2517 | int oflags = -1; |
3b6c1aba | 2518 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2519 | mode++; |
2520 | switch (*mode) { | |
2521 | case 'r': | |
2522 | oflags = O_RDONLY; | |
2523 | if (*++mode == '+') { | |
2524 | oflags = O_RDWR; | |
2525 | mode++; | |
2526 | } | |
2527 | break; | |
2528 | ||
2529 | case 'w': | |
2530 | oflags = O_CREAT | O_TRUNC; | |
2531 | if (*++mode == '+') { | |
2532 | oflags |= O_RDWR; | |
2533 | mode++; | |
2534 | } | |
2535 | else | |
2536 | oflags |= O_WRONLY; | |
2537 | break; | |
2538 | ||
2539 | case 'a': | |
2540 | oflags = O_CREAT | O_APPEND; | |
2541 | if (*++mode == '+') { | |
2542 | oflags |= O_RDWR; | |
2543 | mode++; | |
2544 | } | |
2545 | else | |
2546 | oflags |= O_WRONLY; | |
2547 | break; | |
2548 | } | |
43e5477e JH |
2549 | |
2550 | /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */ | |
2551 | ||
2552 | /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one | |
2553 | * of them in, and then bit-and-masking the other them away, won't | |
2554 | * have much of an effect. */ | |
2555 | switch (*mode) { | |
2556 | case 'b': | |
2557 | #if O_TEXT != O_BINARY | |
2558 | oflags |= O_BINARY; | |
14a5cf38 | 2559 | oflags &= ~O_TEXT; |
43e5477e JH |
2560 | #endif |
2561 | mode++; | |
2562 | break; | |
2563 | case 't': | |
2564 | #if O_TEXT != O_BINARY | |
14a5cf38 JH |
2565 | oflags |= O_TEXT; |
2566 | oflags &= ~O_BINARY; | |
43e5477e JH |
2567 | #endif |
2568 | mode++; | |
2569 | break; | |
2570 | default: | |
2571 | # if O_BINARY != 0 | |
2572 | /* bit-or:ing with zero O_BINARY would be useless. */ | |
93f31ee9 PG |
2573 | /* |
2574 | * If neither "t" nor "b" was specified, open the file | |
2575 | * in O_BINARY mode. | |
43e5477e JH |
2576 | * |
2577 | * Note that if something else than the zero byte was seen | |
2578 | * here (e.g. bogus mode "rx"), just few lines later we will | |
2579 | * set the errno and invalidate the flags. | |
93f31ee9 PG |
2580 | */ |
2581 | oflags |= O_BINARY; | |
43e5477e JH |
2582 | # endif |
2583 | break; | |
93f31ee9 | 2584 | } |
14a5cf38 | 2585 | if (*mode || oflags == -1) { |
93189314 | 2586 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2587 | oflags = -1; |
2588 | } | |
2589 | return oflags; | |
9e353e3b NIS |
2590 | } |
2591 | ||
2592 | IV | |
f62ce20a | 2593 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2594 | { |
96a5add6 | 2595 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2596 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2597 | } |
2598 | ||
aa063c35 NIS |
2599 | static void |
2600 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2601 | { |
de009b76 | 2602 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2603 | #if defined(WIN32) |
aa063c35 NIS |
2604 | Stat_t st; |
2605 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2606 | if (!S_ISREG(st.st_mode)) { |
e17bc05a | 2607 | DEBUG_i( PerlIO_debug("%d is not regular file\n",fd) ); |
6caa5a9c NIS |
2608 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2609 | } | |
aa063c35 | 2610 | else { |
e17bc05a | 2611 | DEBUG_i( PerlIO_debug("%d _is_ a regular file\n",fd) ); |
aa063c35 | 2612 | } |
6caa5a9c NIS |
2613 | } |
2614 | #endif | |
aa063c35 NIS |
2615 | s->fd = fd; |
2616 | s->oflags = imode; | |
2617 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2618 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2619 | } |
2620 | ||
2621 | IV | |
2622 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2623 | { | |
2624 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2625 | if (*PerlIONext(f)) { |
4b069b44 | 2626 | /* We never call down so do any pending stuff now */ |
03c0554d | 2627 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2628 | /* |
71200d45 | 2629 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2630 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2631 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2632 | */ |
acbd16bf | 2633 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2634 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2635 | } |
2636 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2637 | |
14a5cf38 | 2638 | return code; |
4b803d04 NIS |
2639 | } |
2640 | ||
c2fcde81 JH |
2641 | IV |
2642 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2643 | { | |
de009b76 | 2644 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2645 | Off_t new_loc; |
96a5add6 | 2646 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2647 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2648 | #ifdef ESPIPE | |
2649 | SETERRNO(ESPIPE, LIB_INVARG); | |
2650 | #else | |
2651 | SETERRNO(EINVAL, LIB_INVARG); | |
2652 | #endif | |
2653 | return -1; | |
2654 | } | |
0723351e NC |
2655 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2656 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2657 | return -1; |
c2fcde81 JH |
2658 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2659 | return 0; | |
2660 | } | |
2661 | ||
9e353e3b | 2662 | PerlIO * |
14a5cf38 JH |
2663 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2664 | IV n, const char *mode, int fd, int imode, | |
2665 | int perm, PerlIO *f, int narg, SV **args) | |
2666 | { | |
d9dac8cd | 2667 | if (PerlIOValid(f)) { |
cc6623a8 | 2668 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2669 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2670 | } |
2671 | if (narg > 0) { | |
3b6c1aba | 2672 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2673 | mode++; |
2674 | else { | |
2675 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2676 | #ifdef VMS |
2677 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2678 | #else | |
14a5cf38 | 2679 | perm = 0666; |
5e2ce0f3 | 2680 | #endif |
14a5cf38 JH |
2681 | } |
2682 | if (imode != -1) { | |
41188aa0 TC |
2683 | STRLEN len; |
2684 | const char *path = SvPV_const(*args, len); | |
2685 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2686 | return NULL; |
14a5cf38 JH |
2687 | fd = PerlLIO_open3(path, imode, perm); |
2688 | } | |
2689 | } | |
2690 | if (fd >= 0) { | |
3b6c1aba | 2691 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2692 | mode++; |
2693 | if (!f) { | |
2694 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2695 | } |
2696 | if (!PerlIOValid(f)) { | |
a33cf58c | 2697 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2698 | PerlLIO_close(fd); |
a33cf58c NIS |
2699 | return NULL; |
2700 | } | |
d9dac8cd | 2701 | } |
aa063c35 | 2702 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2703 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2704 | if (*mode == IoTYPE_APPEND) |
2705 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2706 | return f; |
2707 | } | |
2708 | else { | |
2709 | if (f) { | |
6f207bd3 | 2710 | NOOP; |
14a5cf38 | 2711 | /* |
71200d45 | 2712 | * FIXME: pop layers ??? |
14a5cf38 JH |
2713 | */ |
2714 | } | |
2715 | return NULL; | |
2716 | } | |
9e353e3b NIS |
2717 | } |
2718 | ||
71200d45 | 2719 | PerlIO * |
ecdeb87c | 2720 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2721 | { |
dcda55fc | 2722 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2723 | int fd = os->fd; |
ecdeb87c NIS |
2724 | if (flags & PERLIO_DUP_FD) { |
2725 | fd = PerlLIO_dup(fd); | |
2726 | } | |
22c96fc1 | 2727 | if (fd >= 0) { |
ecdeb87c | 2728 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2729 | if (f) { |
2730 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2731 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2732 | return f; |
2733 | } | |
0a20f69b | 2734 | PerlLIO_close(fd); |
71200d45 NIS |
2735 | } |
2736 | return NULL; | |
2737 | } | |
2738 | ||
2739 | ||
9e353e3b | 2740 | SSize_t |
f62ce20a | 2741 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2742 | { |
abf9167d DM |
2743 | int fd; |
2744 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2745 | return -1; | |
2746 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2747 | #ifdef PERLIO_STD_SPECIAL |
2748 | if (fd == 0) | |
2749 | return PERLIO_STD_IN(fd, vbuf, count); | |
2750 | #endif | |
81428673 | 2751 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2752 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2753 | return 0; |
1fd8f4ce | 2754 | } |
14a5cf38 | 2755 | while (1) { |
b464bac0 | 2756 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2757 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2758 | if (len < 0) { |
2759 | if (errno != EAGAIN) { | |
2760 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2761 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2762 | } |
2763 | } | |
2764 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2765 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2766 | SETERRNO(0,0); |
2767 | } | |
14a5cf38 JH |
2768 | return len; |
2769 | } | |
abf9167d DM |
2770 | /* EINTR */ |
2771 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2772 | return -1; | |
14a5cf38 | 2773 | } |
e5964223 | 2774 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2775 | } |
2776 | ||
2777 | SSize_t | |
f62ce20a | 2778 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2779 | { |
abf9167d DM |
2780 | int fd; |
2781 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2782 | return -1; | |
2783 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2784 | #ifdef PERLIO_STD_SPECIAL |
2785 | if (fd == 1 || fd == 2) | |
2786 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2787 | #endif | |
14a5cf38 | 2788 | while (1) { |
de009b76 | 2789 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2790 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2791 | if (len < 0) { |
2792 | if (errno != EAGAIN) { | |
2793 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2794 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2795 | } |
2796 | } | |
14a5cf38 JH |
2797 | return len; |
2798 | } | |
abf9167d DM |
2799 | /* EINTR */ |
2800 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2801 | return -1; | |
06da4f11 | 2802 | } |
e5964223 | 2803 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2804 | } |
2805 | ||
9e353e3b | 2806 | Off_t |
f62ce20a | 2807 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2808 | { |
96a5add6 AL |
2809 | PERL_UNUSED_CONTEXT; |
2810 | ||
14a5cf38 | 2811 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2812 | } |
2813 | ||
2556f95e GF |
2814 | |
2815 | IV | |
2376d97d | 2816 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2817 | { |
de009b76 | 2818 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2819 | int code = 0; |
168d5872 NIS |
2820 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2821 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2822 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2823 | return 0; | |
22569500 | 2824 | } |
93a8090d NIS |
2825 | } |
2826 | else { | |
93189314 | 2827 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2828 | return -1; |
2829 | } | |
14a5cf38 JH |
2830 | while (PerlLIO_close(fd) != 0) { |
2831 | if (errno != EINTR) { | |
2832 | code = -1; | |
2833 | break; | |
2834 | } | |
abf9167d DM |
2835 | /* EINTR */ |
2836 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2837 | return -1; | |
14a5cf38 JH |
2838 | } |
2839 | if (code == 0) { | |
2840 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2841 | } | |
2842 | return code; | |
9e353e3b NIS |
2843 | } |
2844 | ||
27da23d5 | 2845 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2846 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2847 | "unix", |
2848 | sizeof(PerlIOUnix), | |
2849 | PERLIO_K_RAW, | |
2850 | PerlIOUnix_pushed, | |
2376d97d | 2851 | PerlIOBase_popped, |
14a5cf38 | 2852 | PerlIOUnix_open, |
86e05cf2 | 2853 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2854 | NULL, |
2855 | PerlIOUnix_fileno, | |
71200d45 | 2856 | PerlIOUnix_dup, |
14a5cf38 JH |
2857 | PerlIOUnix_read, |
2858 | PerlIOBase_unread, | |
2859 | PerlIOUnix_write, | |
2860 | PerlIOUnix_seek, | |
2861 | PerlIOUnix_tell, | |
2862 | PerlIOUnix_close, | |
22569500 NIS |
2863 | PerlIOBase_noop_ok, /* flush */ |
2864 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2865 | PerlIOBase_eof, |
2866 | PerlIOBase_error, | |
2867 | PerlIOBase_clearerr, | |
2868 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2869 | NULL, /* get_base */ |
2870 | NULL, /* get_bufsiz */ | |
2871 | NULL, /* get_ptr */ | |
2872 | NULL, /* get_cnt */ | |
2873 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2874 | }; |
2875 | ||
2876 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2877 | /* |
71200d45 | 2878 | * stdio as a layer |
14a5cf38 | 2879 | */ |
9e353e3b | 2880 | |
313e59c8 NIS |
2881 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2882 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2883 | broken by the last second glibc 2.3 fix | |
2884 | */ | |
2885 | #define STDIO_BUFFER_WRITABLE | |
2886 | #endif | |
2887 | ||
2888 | ||
14a5cf38 JH |
2889 | typedef struct { |
2890 | struct _PerlIO base; | |
22569500 | 2891 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2892 | } PerlIOStdio; |
2893 | ||
2894 | IV | |
f62ce20a | 2895 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2896 | { |
96a5add6 AL |
2897 | PERL_UNUSED_CONTEXT; |
2898 | ||
c4420975 AL |
2899 | if (PerlIOValid(f)) { |
2900 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2901 | if (s) | |
2902 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2903 | } |
2904 | errno = EBADF; | |
2905 | return -1; | |
9e353e3b NIS |
2906 | } |
2907 | ||
766a733e | 2908 | char * |
14a5cf38 JH |
2909 | PerlIOStdio_mode(const char *mode, char *tmode) |
2910 | { | |
de009b76 | 2911 | char * const ret = tmode; |
a0625d38 SR |
2912 | if (mode) { |
2913 | while (*mode) { | |
2914 | *tmode++ = *mode++; | |
2915 | } | |
14a5cf38 | 2916 | } |
95005ad8 | 2917 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2918 | *tmode++ = 'b'; |
2919 | #endif | |
14a5cf38 JH |
2920 | *tmode = '\0'; |
2921 | return ret; | |
2922 | } | |
2923 | ||
4b803d04 | 2924 | IV |
2dc2558e | 2925 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2926 | { |
1fd8f4ce NIS |
2927 | PerlIO *n; |
2928 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2929 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2930 | if (toptab == tab) { |
2931 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2932 | PerlIO_pop(aTHX_ f); | |
2933 | return 0; | |
2934 | } else { | |
de009b76 | 2935 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2936 | char tmode[8]; |
2937 | FILE *stdio; | |
81428673 | 2938 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2939 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2940 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2941 | /* We never call down so do any pending stuff now */ | |
2942 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2943 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2944 | } |
1fd8f4ce NIS |
2945 | else { |
2946 | return -1; | |
2947 | } | |
2948 | } | |
14a5cf38 | 2949 | } |
2dc2558e | 2950 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2951 | } |
2952 | ||
22569500 | 2953 | |
9e353e3b | 2954 | PerlIO * |
4b069b44 | 2955 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2956 | { |
14a5cf38 JH |
2957 | dTHX; |
2958 | PerlIO *f = NULL; | |
ea5bc90f YK |
2959 | #ifdef EBCDIC |
2960 | int rc; | |
2961 | char filename[FILENAME_MAX]; | |
2962 | fldata_t fileinfo; | |
2963 | #endif | |
14a5cf38 | 2964 | if (stdio) { |
22569500 | 2965 | PerlIOStdio *s; |
375ed12a JH |
2966 | int fd0 = fileno(stdio); |
2967 | if (fd0 < 0) { | |
ea5bc90f YK |
2968 | #ifdef EBCDIC |
2969 | rc = fldata(stdio,filename,&fileinfo); | |
2970 | if(rc != 0){ | |
2971 | return NULL; | |
2972 | } | |
2973 | if(fileinfo.__dsorgHFS){ | |
2974 | return NULL; | |
2975 | } | |
2976 | /*This MVS dataset , OK!*/ | |
2977 | #else | |
375ed12a | 2978 | return NULL; |
ea5bc90f | 2979 | #endif |
375ed12a | 2980 | } |
4b069b44 NIS |
2981 | if (!mode || !*mode) { |
2982 | /* We need to probe to see how we can open the stream | |
2983 | so start with read/write and then try write and read | |
2984 | we dup() so that we can fclose without loosing the fd. | |
2985 | ||
2986 | Note that the errno value set by a failing fdopen | |
2987 | varies between stdio implementations. | |
2988 | */ | |
375ed12a JH |
2989 | const int fd = PerlLIO_dup(fd0); |
2990 | FILE *f2; | |
2991 | if (fd < 0) { | |
2992 | return f; | |
2993 | } | |
2994 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2995 | if (!f2) { |
a33cf58c | 2996 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2997 | } |
2998 | if (!f2) { | |
a33cf58c | 2999 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
3000 | } |
3001 | if (!f2) { | |
3002 | /* Don't seem to be able to open */ | |
3003 | PerlLIO_close(fd); | |
3004 | return f; | |
3005 | } | |
3006 | fclose(f2); | |
22569500 | 3007 | } |
de092133 | 3008 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
3009 | s = PerlIOSelf(f, PerlIOStdio); |
3010 | s->stdio = stdio; | |
ea5bc90f YK |
3011 | #ifdef EBCDIC |
3012 | fd0 = fileno(stdio); | |
3013 | if(fd0 != -1){ | |
3014 | PerlIOUnix_refcnt_inc(fd0); | |
3015 | } | |
3016 | else{ | |
3017 | rc = fldata(stdio,filename,&fileinfo); | |
3018 | if(rc != 0){ | |
3019 | PerlIOUnix_refcnt_inc(fd0); | |
3020 | } | |
3021 | if(fileinfo.__dsorgHFS){ | |
3022 | PerlIOUnix_refcnt_inc(fd0); | |
3023 | } | |
3024 | /*This MVS dataset , OK!*/ | |
3025 | } | |
3026 | #else | |
c586124f | 3027 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
ea5bc90f | 3028 | #endif |
a33cf58c | 3029 | } |
14a5cf38 JH |
3030 | } |
3031 | return f; | |
9e353e3b NIS |
3032 | } |
3033 | ||
3034 | PerlIO * | |
14a5cf38 JH |
3035 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3036 | IV n, const char *mode, int fd, int imode, | |
3037 | int perm, PerlIO *f, int narg, SV **args) | |
3038 | { | |
3039 | char tmode[8]; | |
d9dac8cd | 3040 | if (PerlIOValid(f)) { |
41188aa0 TC |
3041 | STRLEN len; |
3042 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 3043 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 3044 | FILE *stdio; |
41188aa0 | 3045 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 3046 | return NULL; |
1751d015 | 3047 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
3048 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
3049 | s->stdio); | |
14a5cf38 JH |
3050 | if (!s->stdio) |
3051 | return NULL; | |
3052 | s->stdio = stdio; | |
1751d015 | 3053 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
3054 | return f; |
3055 | } | |
3056 | else { | |
3057 | if (narg > 0) { | |
41188aa0 TC |
3058 | STRLEN len; |
3059 | const char * const path = SvPV_const(*args, len); | |
3060 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 3061 | return NULL; |
3b6c1aba | 3062 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
3063 | mode++; |
3064 | fd = PerlLIO_open3(path, imode, perm); | |
3065 | } | |
3066 | else { | |
95005ad8 GH |
3067 | FILE *stdio; |
3068 | bool appended = FALSE; | |
3069 | #ifdef __CYGWIN__ | |
3070 | /* Cygwin wants its 'b' early. */ | |
3071 | appended = TRUE; | |
3072 | mode = PerlIOStdio_mode(mode, tmode); | |
3073 | #endif | |
3074 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3075 | if (stdio) { |
6f0313ac JH |
3076 | if (!f) { |
3077 | f = PerlIO_allocate(aTHX); | |
3078 | } | |
95005ad8 GH |
3079 | if (!appended) |
3080 | mode = PerlIOStdio_mode(mode, tmode); | |
3081 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3082 | if (f) { | |
0f0f9e2b JH |
3083 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3084 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3085 | } else { | |
3086 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3087 | } |
3088 | return f; | |
3089 | } | |
3090 | else { | |
3091 | return NULL; | |
3092 | } | |
14a5cf38 JH |
3093 | } |
3094 | } | |
3095 | if (fd >= 0) { | |
3096 | FILE *stdio = NULL; | |
3097 | int init = 0; | |
3b6c1aba | 3098 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3099 | init = 1; |
3100 | mode++; | |
3101 | } | |
3102 | if (init) { | |
3103 | switch (fd) { | |
3104 | case 0: | |
3105 | stdio = PerlSIO_stdin; | |
3106 | break; | |
3107 | case 1: | |
3108 | stdio = PerlSIO_stdout; | |
3109 | break; | |
3110 | case 2: | |
3111 | stdio = PerlSIO_stderr; | |
3112 | break; | |
3113 | } | |
3114 | } | |
3115 | else { | |
3116 | stdio = PerlSIO_fdopen(fd, mode = | |
3117 | PerlIOStdio_mode(mode, tmode)); | |
3118 | } | |
3119 | if (stdio) { | |
d9dac8cd NIS |
3120 | if (!f) { |
3121 | f = PerlIO_allocate(aTHX); | |
3122 | } | |
a33cf58c | 3123 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
3124 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3125 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 3126 | } |
14a5cf38 JH |
3127 | return f; |
3128 | } | |
0a20f69b | 3129 | PerlLIO_close(fd); |
14a5cf38 JH |
3130 | } |
3131 | } | |
ee518936 | 3132 | return NULL; |
9e353e3b NIS |
3133 | } |
3134 | ||
1751d015 | 3135 | PerlIO * |
ecdeb87c | 3136 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3137 | { |
3138 | /* This assumes no layers underneath - which is what | |
3139 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3140 | */ | |
ecdeb87c | 3141 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3142 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3143 | const int fd = fileno(stdio); |
9217ff3f | 3144 | char mode[8]; |
ecdeb87c | 3145 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 3146 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
3147 | if (dfd >= 0) { |
3148 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3149 | goto set_this; | |
ecdeb87c NIS |
3150 | } |
3151 | else { | |
6f207bd3 | 3152 | NOOP; |
ecdeb87c NIS |
3153 | /* FIXME: To avoid messy error recovery if dup fails |
3154 | re-use the existing stdio as though flag was not set | |
3155 | */ | |
3156 | } | |
3157 | } | |
9217ff3f NIS |
3158 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3159 | set_this: | |
694c95cf | 3160 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 SP |
3161 | if(stdio) { |
3162 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3163 | } | |
1751d015 NIS |
3164 | } |
3165 | return f; | |
3166 | } | |
3167 | ||
0d7a5398 NIS |
3168 | static int |
3169 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3170 | { | |
96a5add6 AL |
3171 | PERL_UNUSED_CONTEXT; |
3172 | ||
0d7a5398 | 3173 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3174 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3175 | */ |
36b1c892 AD |
3176 | # if defined(HAS_FDCLOSE) |
3177 | return fdclose(f, NULL) == 0 ? 1 : 0; | |
3178 | # elif defined(__UCLIBC__) | |
ef8eacb8 AT |
3179 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ |
3180 | f->__filedes = -1; | |
3181 | return 1; | |
3182 | # elif defined(__GLIBC__) | |
0d7a5398 | 3183 | /* There may be a better way for GLIBC: |
37725cdc | 3184 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3185 | */ |
3186 | f->_fileno = -1; | |
3187 | return 1; | |
bdea967c | 3188 | # elif defined(__sun) |
f5992bc4 | 3189 | PERL_UNUSED_ARG(f); |
cfedb851 | 3190 | return 0; |
0d7a5398 NIS |
3191 | # elif defined(__hpux) |
3192 | f->__fileH = 0xff; | |
3193 | f->__fileL = 0xff; | |
3194 | return 1; | |
9837d373 | 3195 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3196 | your platform does not have special entry try this one. |
9837d373 NIS |
3197 | [For OSF only have confirmation for Tru64 (alpha) |
3198 | but assume other OSFs will be similar.] | |
37725cdc | 3199 | */ |
9837d373 | 3200 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3201 | f->_file = -1; |
3202 | return 1; | |
3203 | # elif defined(__FreeBSD__) | |
3204 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3205 | - we could insert a dummy func in the _close function entry |
3206 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3207 | */ |
3208 | f->_file = -1; | |
0c49ea6a SU |
3209 | return 1; |
3210 | # elif defined(__OpenBSD__) | |
3211 | /* There may be a better way on OpenBSD: | |
3212 | - we could insert a dummy func in the _close function entry | |
3213 | f->_close = (int (*)(void *)) dummy_close; | |
3214 | */ | |
3215 | f->_file = -1; | |
0d7a5398 | 3216 | return 1; |
59ad941d IZ |
3217 | # elif defined(__EMX__) |
3218 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3219 | f->_handle = -1; | |
3220 | return 1; | |
0d7a5398 NIS |
3221 | # elif defined(__CYGWIN__) |
3222 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3223 | - we could insert a dummy func in the _close function entry |
3224 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3225 | */ |
3226 | f->_file = -1; | |
3227 | return 1; | |
3228 | # elif defined(WIN32) | |
378eeda7 | 3229 | # if defined(UNDER_CE) |
b475b3e6 JH |
3230 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3231 | structure at all | |
3232 | */ | |
0d7a5398 NIS |
3233 | # else |
3234 | f->_file = -1; | |
3235 | # endif | |
3236 | return 1; | |
3237 | # else | |
3238 | #if 0 | |
37725cdc | 3239 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3240 | (which isn't thread safe) instead |
37725cdc | 3241 | */ |
0d7a5398 NIS |
3242 | # error "Don't know how to set FILE.fileno on your platform" |
3243 | #endif | |
8772537c | 3244 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3245 | return 0; |
3246 | # endif | |
3247 | } | |
3248 | ||
1751d015 | 3249 | IV |
f62ce20a | 3250 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3251 | { |
c4420975 | 3252 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3253 | if (!stdio) { |
3254 | errno = EBADF; | |
3255 | return -1; | |
3256 | } | |
9217ff3f | 3257 | else { |
de009b76 | 3258 | const int fd = fileno(stdio); |
0d7a5398 | 3259 | int invalidate = 0; |
bbfd922f | 3260 | IV result = 0; |
1d791a44 | 3261 | int dupfd = -1; |
4ee39169 | 3262 | dSAVEDERRNO; |
a2e578da MHM |
3263 | #ifdef USE_ITHREADS |
3264 | dVAR; | |
3265 | #endif | |
0d7a5398 | 3266 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3267 | /* Socks lib overrides close() but stdio isn't linked to |
3268 | that library (though we are) - so we must call close() | |
3269 | on sockets on stdio's behalf. | |
3270 | */ | |
0d7a5398 NIS |
3271 | int optval; |
3272 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3273 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3274 | invalidate = 1; |
0d7a5398 | 3275 | #endif |
d8723f43 NC |
3276 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3277 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3278 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3279 | trying to close an already closed handle which somehow it still has | |
3280 | a reference to. (via.xs, I'm looking at you). */ | |
3281 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3282 | /* File descriptor still in use */ | |
0d7a5398 | 3283 | invalidate = 1; |
d8723f43 | 3284 | } |
0d7a5398 | 3285 | if (invalidate) { |
6b4ce6c8 AL |
3286 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3287 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3288 | return 0; | |
3289 | if (stdio == stdout || stdio == stderr) | |
3290 | return PerlIO_flush(f); | |
d88f7f65 JH |
3291 | } |
3292 | #ifdef USE_ITHREADS | |
3293 | MUTEX_LOCK(&PL_perlio_mutex); | |
3294 | /* Right. We need a mutex here because for a brief while we | |
3295 | will have the situation that fd is actually closed. Hence if | |
3296 | a second thread were to get into this block, its dup() would | |
3297 | likely return our fd as its dupfd. (after all, it is closed) | |
3298 | Then if we get to the dup2() first, we blat the fd back | |
3299 | (messing up its temporary as a side effect) only for it to | |
3300 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3301 | ||
3302 | /* There is, of course, a race condition, that any other thread | |
3303 | trying to input/output/whatever on this fd will be stuffed | |
3304 | for the duration of this little manoeuvrer. Perhaps we | |
3305 | should hold an IO mutex for the duration of every IO | |
3306 | operation if we know that invalidate doesn't work on this | |
3307 | platform, but that would suck, and could kill performance. | |
3308 | ||
3309 | Except that correctness trumps speed. | |
3310 | Advice from klortho #11912. */ | |
3311 | #endif | |
3312 | if (invalidate) { | |
37725cdc NIS |
3313 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3314 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3315 | fileno slot of the FILE * | |
3316 | */ | |
bbfd922f | 3317 | result = PerlIO_flush(f); |
4ee39169 | 3318 | SAVE_ERRNO; |
6b4ce6c8 | 3319 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3320 | if (!invalidate) { |
6b4ce6c8 | 3321 | dupfd = PerlLIO_dup(fd); |
711e8db2 | 3322 | #ifdef USE_ITHREADS |
9bab90c0 | 3323 | if (dupfd < 0) { |
711e8db2 NC |
3324 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3325 | recover from here, or if closing this particular FILE * | |
3326 | is a good idea now. */ | |
3327 | } | |
3328 | #endif | |
3329 | } | |
94ccb807 JH |
3330 | } else { |
3331 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3332 | } |
0d7a5398 | 3333 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3334 | /* We treat error from stdio as success if we invalidated |
3335 | errno may NOT be expected EBADF | |
e8529473 NIS |
3336 | */ |
3337 | if (invalidate && result != 0) { | |
4ee39169 | 3338 | RESTORE_ERRNO; |
0d7a5398 | 3339 | result = 0; |
37725cdc | 3340 | } |
6b4ce6c8 AL |
3341 | #ifdef SOCKS5_VERSION_NAME |
3342 | /* in SOCKS' case, let close() determine return value */ | |
3343 | result = close(fd); | |
3344 | #endif | |
1d791a44 | 3345 | if (dupfd >= 0) { |
0d7a5398 | 3346 | PerlLIO_dup2(dupfd,fd); |
9bab90c0 | 3347 | PerlLIO_close(dupfd); |
d88f7f65 | 3348 | } |
711e8db2 | 3349 | #ifdef USE_ITHREADS |
d88f7f65 | 3350 | MUTEX_UNLOCK(&PL_perlio_mutex); |
711e8db2 | 3351 | #endif |
9217ff3f | 3352 | return result; |
37725cdc | 3353 | } |
1751d015 NIS |
3354 | } |
3355 | ||
9e353e3b | 3356 | SSize_t |
f62ce20a | 3357 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3358 | { |
abf9167d | 3359 | FILE * s; |
14a5cf38 | 3360 | SSize_t got = 0; |
abf9167d DM |
3361 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3362 | return -1; | |
3363 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3364 | for (;;) { |
3365 | if (count == 1) { | |
3366 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3367 | /* | |
3368 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3369 | * stdio does not do that for fread() | |
3370 | */ | |
de009b76 | 3371 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3372 | if (ch != EOF) { |
3373 | *buf = ch; | |
3374 | got = 1; | |
3375 | } | |
14a5cf38 | 3376 | } |
4d948241 NIS |
3377 | else |
3378 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3379 | if (got == 0 && PerlSIO_ferror(s)) |
3380 | got = -1; | |
42a7a32f | 3381 | if (got >= 0 || errno != EINTR) |
4d948241 | 3382 | break; |
abf9167d DM |
3383 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3384 | return -1; | |
42a7a32f | 3385 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3386 | } |
bdae4172 JH |
3387 | #ifdef __sgi |
3388 | /* Under some circumstances IRIX stdio fgetc() and fread() | |
3389 | * set the errno to ENOENT, which makes no sense according | |
3390 | * to either IRIX or POSIX. [rt.perl.org #123977] */ | |
3391 | if (errno == ENOENT) SETERRNO(0,0); | |
3392 | #endif | |
14a5cf38 | 3393 | return got; |
9e353e3b NIS |
3394 | } |
3395 | ||
3396 | SSize_t | |
f62ce20a | 3397 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3398 | { |
14a5cf38 | 3399 | SSize_t unread = 0; |
c4420975 | 3400 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3401 | |
313e59c8 | 3402 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3403 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3404 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3405 | STDCHAR *base = PerlIO_get_base(f); | |
3406 | SSize_t cnt = PerlIO_get_cnt(f); | |
3407 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3408 | SSize_t avail = ptr - base; | |
3409 | if (avail > 0) { | |
3410 | if (avail > count) { | |
3411 | avail = count; | |
3412 | } | |
3413 | ptr -= avail; | |
3414 | Move(buf-avail,ptr,avail,STDCHAR); | |
3415 | count -= avail; | |
3416 | unread += avail; | |
3417 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3418 | if (PerlSIO_feof(s) && unread >= 0) |
3419 | PerlSIO_clearerr(s); | |
3420 | } | |
3421 | } | |
313e59c8 NIS |
3422 | else |
3423 | #endif | |
3424 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3425 | /* We can get pointer to buffer but not its base |
3426 | Do ungetc() but check chars are ending up in the | |
3427 | buffer | |
3428 | */ | |
3429 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3430 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3431 | while (count > 0) { | |
de009b76 | 3432 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3433 | if (ungetc(ch,s) != ch) { |
3434 | /* ungetc did not work */ | |
3435 | break; | |
3436 | } | |
3437 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3438 | /* Did not change pointer as expected */ | |
375ed12a JH |
3439 | if (fgetc(s) != EOF) /* get char back again */ |
3440 | break; | |
9f7cd136 NIS |
3441 | } |
3442 | /* It worked ! */ | |
3443 | count--; | |
3444 | unread++; | |
93679785 NIS |
3445 | } |
3446 | } | |
3447 | ||
3448 | if (count > 0) { | |
3449 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3450 | } |
3451 | return unread; | |
9e353e3b NIS |
3452 | } |
3453 | ||
3454 | SSize_t | |
f62ce20a | 3455 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3456 | { |
4d948241 | 3457 | SSize_t got; |
abf9167d DM |
3458 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3459 | return -1; | |
4d948241 NIS |
3460 | for (;;) { |
3461 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3462 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3463 | if (got >= 0 || errno != EINTR) |
4d948241 | 3464 | break; |
abf9167d DM |
3465 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3466 | return -1; | |
42a7a32f | 3467 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3468 | } |
3469 | return got; | |
9e353e3b NIS |
3470 | } |
3471 | ||
94a175e1 | 3472 | IV |
f62ce20a | 3473 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3474 | { |
c4420975 | 3475 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3476 | PERL_UNUSED_CONTEXT; |
3477 | ||
94a175e1 | 3478 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3479 | } |
3480 | ||
3481 | Off_t | |
f62ce20a | 3482 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3483 | { |
c4420975 | 3484 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3485 | PERL_UNUSED_CONTEXT; |
3486 | ||
94a175e1 | 3487 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3488 | } |
3489 | ||
3490 | IV | |
f62ce20a | 3491 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3492 | { |
c4420975 | 3493 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3494 | PERL_UNUSED_CONTEXT; |
3495 | ||
14a5cf38 JH |
3496 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3497 | return PerlSIO_fflush(stdio); | |
3498 | } | |
3499 | else { | |
6f207bd3 | 3500 | NOOP; |
88b61e10 | 3501 | #if 0 |
14a5cf38 JH |
3502 | /* |
3503 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3504 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3505 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3506 | * layer read-to-read |
14a5cf38 JH |
3507 | */ |
3508 | /* | |
71200d45 | 3509 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3510 | */ |
4ee39169 | 3511 | dSAVE_ERRNO; |
14a5cf38 | 3512 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3513 | RESTORE_ERRNO; |
88b61e10 | 3514 | #endif |
14a5cf38 JH |
3515 | } |
3516 | return 0; | |
9e353e3b NIS |
3517 | } |
3518 | ||
3519 | IV | |
f62ce20a | 3520 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3521 | { |
96a5add6 AL |
3522 | PERL_UNUSED_CONTEXT; |
3523 | ||
14a5cf38 | 3524 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3525 | } |
3526 | ||
3527 | IV | |
f62ce20a | 3528 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3529 | { |
96a5add6 AL |
3530 | PERL_UNUSED_CONTEXT; |
3531 | ||
263df5f1 | 3532 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3533 | } |
3534 | ||
3535 | void | |
f62ce20a | 3536 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3537 | { |
96a5add6 AL |
3538 | PERL_UNUSED_CONTEXT; |
3539 | ||
14a5cf38 | 3540 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3541 | } |
3542 | ||
3543 | void | |
f62ce20a | 3544 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3545 | { |
96a5add6 AL |
3546 | PERL_UNUSED_CONTEXT; |
3547 | ||
9e353e3b | 3548 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3549 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3550 | #else |
bd61b366 | 3551 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3552 | #endif |
3553 | } | |
3554 | ||
3555 | #ifdef FILE_base | |
3556 | STDCHAR * | |
f62ce20a | 3557 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3558 | { |
c4420975 | 3559 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3560 | PERL_UNUSED_CONTEXT; |
cc00df79 | 3561 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3562 | } |
3563 | ||
3564 | Size_t | |
f62ce20a | 3565 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3566 | { |
c4420975 | 3567 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3568 | PERL_UNUSED_CONTEXT; |
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; |
e9b8343f | 3578 | PERL_UNUSED_CONTEXT; |
cc00df79 | 3579 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3580 | } |
3581 | ||
3582 | SSize_t | |
f62ce20a | 3583 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3584 | { |
c4420975 | 3585 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3586 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3587 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3588 | } |
3589 | ||
3590 | void | |
f62ce20a | 3591 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3592 | { |
c4420975 | 3593 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3594 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3595 | if (ptr != NULL) { |
9e353e3b | 3596 | #ifdef STDIO_PTR_LVALUE |
46f05249 JH |
3597 | /* This is a long-standing infamous mess. The root of the |
3598 | * problem is that one cannot know the signedness of char, and | |
3599 | * more precisely the signedness of FILE._ptr. The following | |
3600 | * things have been tried, and they have all failed (across | |
3601 | * different compilers (remember that core needs to to build | |
3602 | * also with c++) and compiler options: | |
3603 | * | |
3604 | * - casting the RHS to (void*) -- works in *some* places | |
3605 | * - casting the LHS to (void*) -- totally unportable | |
3606 | * | |
3607 | * So let's try silencing the warning at least for gcc. */ | |
3608 | GCC_DIAG_IGNORE(-Wpointer-sign); | |
d06fc7d4 | 3609 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
46f05249 | 3610 | GCC_DIAG_RESTORE; |
9e353e3b | 3611 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3612 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3613 | #endif |
3614 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3615 | /* |
71200d45 | 3616 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3617 | */ |
3618 | return; | |
9e353e3b | 3619 | #endif |
22569500 | 3620 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3621 | PerlProc_abort(); |
22569500 | 3622 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3623 | } |
3624 | /* | |
71200d45 | 3625 | * Now (or only) set cnt |
14a5cf38 | 3626 | */ |
9e353e3b | 3627 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3628 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3629 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3630 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3631 | PerlSIO_set_ptr(stdio, |
3632 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3633 | cnt)); | |
22569500 | 3634 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3635 | PerlProc_abort(); |
22569500 NIS |
3636 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3637 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3638 | } |
3639 | ||
93679785 | 3640 | |
9e353e3b NIS |
3641 | #endif |
3642 | ||
93679785 NIS |
3643 | IV |
3644 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3645 | { | |
abf9167d | 3646 | FILE * stdio; |
93679785 | 3647 | int c; |
96a5add6 | 3648 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3649 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3650 | return -1; | |
3651 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3652 | |
93679785 NIS |
3653 | /* |
3654 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3655 | */ | |
3656 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3657 | if (PerlSIO_fflush(stdio) != 0) | |
3658 | return EOF; | |
3659 | } | |
f3be3723 BL |
3660 | for (;;) { |
3661 | c = PerlSIO_fgetc(stdio); | |
3662 | if (c != EOF) | |
3663 | break; | |
3664 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3665 | return EOF; | |
abf9167d DM |
3666 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3667 | return -1; | |
f3be3723 BL |
3668 | SETERRNO(0,0); |
3669 | } | |
93679785 NIS |
3670 | |
3671 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3672 | |
3673 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3674 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3675 | /* Fake ungetc() to the real buffer in case system's ungetc |
3676 | goes elsewhere | |
3677 | */ | |
3678 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3679 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3680 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3681 | if (ptr == base+1) { | |
3682 | *--ptr = (STDCHAR) c; | |
3683 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3684 | if (PerlSIO_feof(stdio)) | |
3685 | PerlSIO_clearerr(stdio); | |
3686 | return 0; | |
3687 | } | |
3688 | } | |
313e59c8 NIS |
3689 | else |
3690 | #endif | |
3691 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3692 | STDCHAR ch = c; |
3693 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3694 | return 0; | |
3695 | } | |
3696 | } | |
93679785 NIS |
3697 | #endif |
3698 | ||
93679785 | 3699 | /* If buffer snoop scheme above fails fall back to |
9f7cd136 | 3700 | using ungetc(). |
93679785 NIS |
3701 | */ |
3702 | if (PerlSIO_ungetc(c, stdio) != c) | |
3703 | return EOF; | |
5876737a | 3704 | |
93679785 NIS |
3705 | return 0; |
3706 | } | |
3707 | ||
3708 | ||
3709 | ||
27da23d5 | 3710 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3711 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3712 | "stdio", |
3713 | sizeof(PerlIOStdio), | |
86e05cf2 | 3714 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3715 | PerlIOStdio_pushed, |
2376d97d | 3716 | PerlIOBase_popped, |
14a5cf38 | 3717 | PerlIOStdio_open, |
86e05cf2 | 3718 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3719 | NULL, |
3720 | PerlIOStdio_fileno, | |
71200d45 | 3721 | PerlIOStdio_dup, |
14a5cf38 JH |
3722 | PerlIOStdio_read, |
3723 | PerlIOStdio_unread, | |
3724 | PerlIOStdio_write, | |
3725 | PerlIOStdio_seek, | |
3726 | PerlIOStdio_tell, | |
3727 | PerlIOStdio_close, | |
3728 | PerlIOStdio_flush, | |
3729 | PerlIOStdio_fill, | |
3730 | PerlIOStdio_eof, | |
3731 | PerlIOStdio_error, | |
3732 | PerlIOStdio_clearerr, | |
3733 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3734 | #ifdef FILE_base |
14a5cf38 JH |
3735 | PerlIOStdio_get_base, |
3736 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3737 | #else |
14a5cf38 JH |
3738 | NULL, |
3739 | NULL, | |
9e353e3b NIS |
3740 | #endif |
3741 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3742 | PerlIOStdio_get_ptr, |
3743 | PerlIOStdio_get_cnt, | |
15b61c98 | 3744 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3745 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3746 | # else |
3747 | NULL, | |
3748 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3749 | #else | |
3750 | NULL, | |
14a5cf38 JH |
3751 | NULL, |
3752 | NULL, | |
15b61c98 | 3753 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3754 | }; |
3755 | ||
b9d6bf13 JH |
3756 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3757 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3758 | FILE * |
81428673 | 3759 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3760 | { |
e87a358a | 3761 | dTHX; |
81428673 NIS |
3762 | FILE *stdio = NULL; |
3763 | if (PerlIOValid(f)) { | |
3764 | char buf[8]; | |
375ed12a JH |
3765 | int fd = PerlIO_fileno(f); |
3766 | if (fd < 0) { | |
3767 | return NULL; | |
3768 | } | |
81428673 NIS |
3769 | PerlIO_flush(f); |
3770 | if (!mode || !*mode) { | |
3771 | mode = PerlIO_modestr(f, buf); | |
3772 | } | |
3773 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3774 | if (stdio) { | |
3775 | PerlIOl *l = *f; | |
9f75cc58 | 3776 | PerlIO *f2; |
81428673 NIS |
3777 | /* De-link any lower layers so new :stdio sticks */ |
3778 | *f = NULL; | |
a0714e2c | 3779 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3780 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3781 | s->stdio = stdio; |
6b54a403 | 3782 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3783 | /* Link previous lower layers under new one */ |
3784 | *PerlIONext(f) = l; | |
3785 | } | |
3786 | else { | |
3787 | /* restore layers list */ | |
3788 | *f = l; | |
3789 | } | |
a33cf58c | 3790 | } |
14a5cf38 JH |
3791 | } |
3792 | return stdio; | |
9e353e3b NIS |
3793 | } |
3794 | ||
81428673 | 3795 | |
9e353e3b NIS |
3796 | FILE * |
3797 | PerlIO_findFILE(PerlIO *f) | |
3798 | { | |
14a5cf38 | 3799 | PerlIOl *l = *f; |
bbbc33d0 | 3800 | FILE *stdio; |
14a5cf38 JH |
3801 | while (l) { |
3802 | if (l->tab == &PerlIO_stdio) { | |
3803 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3804 | return s->stdio; | |
3805 | } | |
3806 | l = *PerlIONext(&l); | |
f7e7eb72 | 3807 | } |
4b069b44 | 3808 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3809 | /* However, we're not really exporting a FILE * to someone else (who |
3810 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3811 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3812 | descriptor. We have to do this, because if the loop above returns you |
3813 | the FILE *, then *it* didn't increase any reference count. So there's | |
3814 | only one way to be consistent. */ | |
3815 | stdio = PerlIO_exportFILE(f, NULL); | |
3816 | if (stdio) { | |
3817 | const int fd = fileno(stdio); | |
3818 | if (fd >= 0) | |
3819 | PerlIOUnix_refcnt_dec(fd); | |
3820 | } | |
3821 | return stdio; | |
9e353e3b NIS |
3822 | } |
3823 | ||
b9d6bf13 | 3824 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3825 | void |
3826 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3827 | { | |
22569500 NIS |
3828 | PerlIOl *l; |
3829 | while ((l = *p)) { | |
3830 | if (l->tab == &PerlIO_stdio) { | |
3831 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3832 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3833 | const int fd = fileno(f); |
3834 | if (fd >= 0) | |
3835 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3836 | { |
3837 | dTHX; | |
3838 | PerlIO_pop(aTHX_ p); | |
3839 | } | |
22569500 NIS |
3840 | return; |
3841 | } | |
3842 | } | |
3843 | p = PerlIONext(p); | |
3844 | } | |
3845 | return; | |
9e353e3b NIS |
3846 | } |
3847 | ||
3848 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3849 | /* |
71200d45 | 3850 | * perlio buffer layer |
14a5cf38 | 3851 | */ |
9e353e3b | 3852 | |
5e2ab84b | 3853 | IV |
2dc2558e | 3854 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3855 | { |
14a5cf38 | 3856 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3857 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3858 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3859 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3860 | } | |
4b069b44 | 3861 | if (*PerlIONext(f)) { |
de009b76 | 3862 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3863 | if (posn != (Off_t) - 1) { |
3864 | b->posn = posn; | |
3865 | } | |
14a5cf38 | 3866 | } |
2dc2558e | 3867 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3868 | } |
3869 | ||
9e353e3b | 3870 | PerlIO * |
14a5cf38 JH |
3871 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3872 | IV n, const char *mode, int fd, int imode, int perm, | |
3873 | PerlIO *f, int narg, SV **args) | |
3874 | { | |
04892f78 | 3875 | if (PerlIOValid(f)) { |
14a5cf38 | 3876 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3877 | PerlIO_funcs *tab = |
3878 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3879 | if (tab && tab->Open) | |
3880 | next = | |
3881 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3882 | next, narg, args); | |
2dc2558e | 3883 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3884 | return NULL; |
3885 | } | |
3886 | } | |
3887 | else { | |
04892f78 | 3888 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3889 | int init = 0; |
3b6c1aba | 3890 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3891 | init = 1; |
3892 | /* | |
71200d45 | 3893 | * mode++; |
14a5cf38 JH |
3894 | */ |
3895 | } | |
67363c0d JH |
3896 | if (tab && tab->Open) |
3897 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3898 | f, narg, args); | |
3899 | else | |
3900 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3901 | if (f) { |
22569500 | 3902 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3903 | /* |
3904 | * if push fails during open, open fails. close will pop us. | |
3905 | */ | |
3906 | PerlIO_close (f); | |
3907 | return NULL; | |
3908 | } else { | |
3909 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3910 | if (init && fd == 2) { |
3911 | /* | |
3912 | * Initial stderr is unbuffered | |
3913 | */ | |
3914 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3915 | } | |
23b84778 IZ |
3916 | #ifdef PERLIO_USING_CRLF |
3917 | # ifdef PERLIO_IS_BINMODE_FD | |
3918 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3919 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3920 | else |
3921 | # endif | |
3922 | /* | |
3923 | * do something about failing setmode()? --jhi | |
3924 | */ | |
3925 | PerlLIO_setmode(fd, O_BINARY); | |
3926 | #endif | |
8c8488cd | 3927 | #ifdef VMS |
8c8488cd CB |
3928 | /* Enable line buffering with record-oriented regular files |
3929 | * so we don't introduce an extraneous record boundary when | |
3930 | * the buffer fills up. | |
3931 | */ | |
3932 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3933 | Stat_t st; | |
3934 | if (PerlLIO_fstat(fd, &st) == 0 | |
3935 | && S_ISREG(st.st_mode) | |
3936 | && (st.st_fab_rfm == FAB$C_VAR | |
3937 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3938 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3939 | } | |
3940 | } | |
3941 | #endif | |
14a5cf38 JH |
3942 | } |
3943 | } | |
ee518936 | 3944 | } |
14a5cf38 | 3945 | return f; |
9e353e3b NIS |
3946 | } |
3947 | ||
14a5cf38 JH |
3948 | /* |
3949 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3950 | * read or write state. For write state, we put the postponed data through |
3951 | * the next layers. For read state, we seek() the next layers to the | |
3952 | * offset given by current position in the buffer, and discard the buffer | |
3953 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3954 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3955 | */ |
9e353e3b | 3956 | IV |
f62ce20a | 3957 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3958 | { |
dcda55fc | 3959 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3960 | int code = 0; |
04892f78 | 3961 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3962 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3963 | /* | |
71200d45 | 3964 | * write() the buffer |
14a5cf38 | 3965 | */ |
de009b76 AL |
3966 | const STDCHAR *buf = b->buf; |
3967 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3968 | while (p < b->ptr) { |
3969 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3970 | if (count > 0) { | |
3971 | p += count; | |
3972 | } | |
3973 | else if (count < 0 || PerlIO_error(n)) { | |
3974 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 3975 | PerlIO_save_errno(f); |
14a5cf38 JH |
3976 | code = -1; |
3977 | break; | |
3978 | } | |
3979 | } | |
3980 | b->posn += (p - buf); | |
3981 | } | |
3982 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3983 | STDCHAR *buf = PerlIO_get_base(f); | |
3984 | /* | |
71200d45 | 3985 | * Note position change |
14a5cf38 JH |
3986 | */ |
3987 | b->posn += (b->ptr - buf); | |
3988 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3989 | /* We did not consume all of it - try and seek downstream to |
3990 | our logical position | |
14a5cf38 | 3991 | */ |
4b069b44 | 3992 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3993 | /* Reload n as some layers may pop themselves on seek */ |
3994 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3995 | } |
ba5c3fe9 | 3996 | else { |
4b069b44 NIS |
3997 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3998 | data is lost for good - so return saying "ok" having undone | |
3999 | the position adjust | |
4000 | */ | |
4001 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
4002 | return code; |
4003 | } | |
14a5cf38 JH |
4004 | } |
4005 | } | |
4006 | b->ptr = b->end = b->buf; | |
4007 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 4008 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 4009 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
4010 | code = -1; |
4011 | return code; | |
6f9d8c32 NIS |
4012 | } |
4013 | ||
93c2c2ec IZ |
4014 | /* This discards the content of the buffer after b->ptr, and rereads |
4015 | * the buffer from the position off in the layer downstream; here off | |
4016 | * is at offset corresponding to b->ptr - b->buf. | |
4017 | */ | |
06da4f11 | 4018 | IV |
f62ce20a | 4019 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 4020 | { |
dcda55fc | 4021 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4022 | PerlIO *n = PerlIONext(f); |
4023 | SSize_t avail; | |
4024 | /* | |
4b069b44 NIS |
4025 | * Down-stream flush is defined not to loose read data so is harmless. |
4026 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 4027 | */ |
93c2c2ec | 4028 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
4029 | return -1; |
4030 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 4031 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
4032 | |
4033 | if (!b->buf) | |
22569500 | 4034 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 4035 | |
0f0eef27 | 4036 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4037 | |
14a5cf38 | 4038 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4039 | |
4040 | if (!PerlIOValid(n)) { | |
4041 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4042 | return -1; | |
4043 | } | |
4044 | ||
14a5cf38 JH |
4045 | if (PerlIO_fast_gets(n)) { |
4046 | /* | |
04892f78 | 4047 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4048 | * ->Read() because that will loop till it gets what we asked for |
4049 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4050 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4051 | */ |
4052 | avail = PerlIO_get_cnt(n); | |
4053 | if (avail <= 0) { | |
4054 | avail = PerlIO_fill(n); | |
4055 | if (avail == 0) | |
4056 | avail = PerlIO_get_cnt(n); | |
4057 | else { | |
4058 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4059 | avail = 0; | |
4060 | } | |
4061 | } | |
4062 | if (avail > 0) { | |
4063 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4064 | const SSize_t cnt = avail; |
eb160463 | 4065 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4066 | avail = b->bufsiz; |
4067 | Copy(ptr, b->buf, avail, STDCHAR); | |
4068 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4069 | } | |
4070 | } | |
4071 | else { | |
4072 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4073 | } | |
4074 | if (avail <= 0) { | |
4075 | if (avail == 0) | |
4076 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4077 | else | |
0ea86a10 | 4078 | { |
14a5cf38 | 4079 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
0ea86a10 FC |
4080 | PerlIO_save_errno(f); |
4081 | } | |
14a5cf38 JH |
4082 | return -1; |
4083 | } | |
4084 | b->end = b->buf + avail; | |
4085 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4086 | return 0; | |
06da4f11 NIS |
4087 | } |
4088 | ||
6f9d8c32 | 4089 | SSize_t |
f62ce20a | 4090 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4091 | { |
04892f78 | 4092 | if (PerlIOValid(f)) { |
dcda55fc | 4093 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4094 | if (!b->ptr) |
4095 | PerlIO_get_base(f); | |
f62ce20a | 4096 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4097 | } |
4098 | return 0; | |
6f9d8c32 NIS |
4099 | } |
4100 | ||
9e353e3b | 4101 | SSize_t |
f62ce20a | 4102 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4103 | { |
14a5cf38 | 4104 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4105 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4106 | SSize_t unread = 0; |
4107 | SSize_t avail; | |
4108 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4109 | PerlIO_flush(f); | |
4110 | if (!b->buf) | |
4111 | PerlIO_get_base(f); | |
4112 | if (b->buf) { | |
4113 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4114 | /* | |
4115 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4116 | * which have been read back to buffer start |
14a5cf38 JH |
4117 | */ |
4118 | avail = (b->ptr - b->buf); | |
4119 | } | |
4120 | else { | |
4121 | /* | |
4122 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4123 | * unread |
14a5cf38 JH |
4124 | */ |
4125 | avail = b->bufsiz; | |
4126 | b->end = b->buf + avail; | |
4127 | b->ptr = b->end; | |
4128 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4129 | /* | |
71200d45 | 4130 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4131 | */ |
4132 | b->posn -= b->bufsiz; | |
4133 | } | |
94e529cc | 4134 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4135 | /* |
71200d45 | 4136 | * If we have space for more than count, just move count |
14a5cf38 JH |
4137 | */ |
4138 | avail = count; | |
4139 | } | |
4140 | if (avail > 0) { | |
4141 | b->ptr -= avail; | |
4142 | buf -= avail; | |
4143 | /* | |
4144 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4145 | * there |
14a5cf38 JH |
4146 | */ |
4147 | if (buf != b->ptr) { | |
4148 | Copy(buf, b->ptr, avail, STDCHAR); | |
4149 | } | |
4150 | count -= avail; | |
4151 | unread += avail; | |
4152 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4153 | } | |
4154 | } | |
93679785 NIS |
4155 | if (count > 0) { |
4156 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4157 | } | |
14a5cf38 | 4158 | return unread; |
760ac839 LW |
4159 | } |
4160 | ||
9e353e3b | 4161 | SSize_t |
f62ce20a | 4162 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4163 | { |
de009b76 | 4164 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4165 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4166 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4167 | Size_t written = 0; |
4168 | if (!b->buf) | |
4169 | PerlIO_get_base(f); | |
4170 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4171 | return 0; | |
0678cb22 NIS |
4172 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4173 | if (PerlIO_flush(f) != 0) { | |
4174 | return 0; | |
4175 | } | |
4176 | } | |
ee56a6b9 CS |
4177 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4178 | flushptr = buf + count; | |
4179 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4180 | --flushptr; | |
4181 | } | |
14a5cf38 JH |
4182 | while (count > 0) { |
4183 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4184 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4185 | avail = count; |
ee56a6b9 CS |
4186 | if (flushptr > buf && flushptr <= buf + avail) |
4187 | avail = flushptr - buf; | |
14a5cf38 | 4188 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4189 | if (avail) { |
4190 | Copy(buf, b->ptr, avail, STDCHAR); | |
4191 | count -= avail; | |
4192 | buf += avail; | |
4193 | written += avail; | |
4194 | b->ptr += avail; | |
4195 | if (buf == flushptr) | |
4196 | PerlIO_flush(f); | |
14a5cf38 JH |
4197 | } |
4198 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4199 | if (PerlIO_flush(f) == -1) |
4200 | return -1; | |
14a5cf38 JH |
4201 | } |
4202 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4203 | PerlIO_flush(f); | |
4204 | return written; | |
9e353e3b NIS |
4205 | } |
4206 | ||
94a175e1 | 4207 | IV |
f62ce20a | 4208 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4209 | { |
14a5cf38 JH |
4210 | IV code; |
4211 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4212 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4213 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4214 | if (code == 0) { | |
de009b76 | 4215 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4216 | b->posn = PerlIO_tell(PerlIONext(f)); |
4217 | } | |
9e353e3b | 4218 | } |
14a5cf38 | 4219 | return code; |
9e353e3b NIS |
4220 | } |
4221 | ||
4222 | Off_t | |
f62ce20a | 4223 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4224 | { |
dcda55fc | 4225 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4226 | /* |
71200d45 | 4227 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4228 | */ |
4229 | Off_t posn = b->posn; | |
37725cdc | 4230 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4231 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4232 | #if 1 | |
4233 | /* As O_APPEND files are normally shared in some sense it is better | |
4234 | to flush : | |
4235 | */ | |
4236 | PerlIO_flush(f); | |
4237 | #else | |
37725cdc | 4238 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4239 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4240 | #endif | |
4241 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4242 | } | |
14a5cf38 JH |
4243 | if (b->buf) { |
4244 | /* | |
71200d45 | 4245 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4246 | */ |
4247 | posn += (b->ptr - b->buf); | |
4248 | } | |
4249 | return posn; | |
9e353e3b NIS |
4250 | } |
4251 | ||
4252 | IV | |
44798d05 NIS |
4253 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4254 | { | |
de009b76 AL |
4255 | const IV code = PerlIOBase_popped(aTHX_ f); |
4256 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4257 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4258 | Safefree(b->buf); | |
4259 | } | |
dcda55fc | 4260 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4261 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4262 | return code; | |
4263 | } | |
4264 | ||
4265 | IV | |
f62ce20a | 4266 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4267 | { |
de009b76 AL |
4268 | const IV code = PerlIOBase_close(aTHX_ f); |
4269 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4270 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4271 | Safefree(b->buf); |
14a5cf38 | 4272 | } |
dcda55fc | 4273 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4274 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4275 | return code; | |
760ac839 LW |
4276 | } |
4277 | ||
9e353e3b | 4278 | STDCHAR * |
f62ce20a | 4279 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4280 | { |
dcda55fc | 4281 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4282 | if (!b->buf) |
4283 | PerlIO_get_base(f); | |
4284 | return b->ptr; | |
9e353e3b NIS |
4285 | } |
4286 | ||
05d1247b | 4287 | SSize_t |
f62ce20a | 4288 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4289 | { |
dcda55fc | 4290 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4291 | if (!b->buf) |
4292 | PerlIO_get_base(f); | |
4293 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4294 | return (b->end - b->ptr); | |
4295 | return 0; | |
9e353e3b NIS |
4296 | } |
4297 | ||
4298 | STDCHAR * | |
f62ce20a | 4299 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4300 | { |
dcda55fc | 4301 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4302 | PERL_UNUSED_CONTEXT; |
4303 | ||
14a5cf38 JH |
4304 | if (!b->buf) { |
4305 | if (!b->bufsiz) | |
1810cd7c | 4306 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
e05a0d74 | 4307 | Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4308 | if (!b->buf) { |
4309 | b->buf = (STDCHAR *) & b->oneword; | |
4310 | b->bufsiz = sizeof(b->oneword); | |
4311 | } | |
dcda55fc | 4312 | b->end = b->ptr = b->buf; |
06da4f11 | 4313 | } |
14a5cf38 | 4314 | return b->buf; |
9e353e3b NIS |
4315 | } |
4316 | ||
4317 | Size_t | |
f62ce20a | 4318 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4319 | { |
dcda55fc | 4320 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4321 | if (!b->buf) |
4322 | PerlIO_get_base(f); | |
4323 | return (b->end - b->buf); | |
9e353e3b NIS |
4324 | } |
4325 | ||
4326 | void | |
f62ce20a | 4327 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4328 | { |
dcda55fc | 4329 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4330 | #ifndef DEBUGGING |
4331 | PERL_UNUSED_ARG(cnt); | |
4332 | #endif | |
14a5cf38 JH |
4333 | if (!b->buf) |
4334 | PerlIO_get_base(f); | |
4335 | b->ptr = ptr; | |
b727803b RGS |
4336 | assert(PerlIO_get_cnt(f) == cnt); |
4337 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4338 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4339 | } |
4340 | ||
71200d45 | 4341 | PerlIO * |
ecdeb87c | 4342 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4343 | { |
ecdeb87c | 4344 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4345 | } |
4346 | ||
4347 | ||
4348 | ||
27da23d5 | 4349 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4350 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4351 | "perlio", |
4352 | sizeof(PerlIOBuf), | |
86e05cf2 | 4353 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4354 | PerlIOBuf_pushed, |
44798d05 | 4355 | PerlIOBuf_popped, |
14a5cf38 | 4356 | PerlIOBuf_open, |
86e05cf2 | 4357 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4358 | NULL, |
4359 | PerlIOBase_fileno, | |
71200d45 | 4360 | PerlIOBuf_dup, |
14a5cf38 JH |
4361 | PerlIOBuf_read, |
4362 | PerlIOBuf_unread, | |
4363 | PerlIOBuf_write, | |
4364 | PerlIOBuf_seek, | |
4365 | PerlIOBuf_tell, | |
4366 | PerlIOBuf_close, | |
4367 | PerlIOBuf_flush, | |
4368 | PerlIOBuf_fill, | |
4369 | PerlIOBase_eof, | |
4370 | PerlIOBase_error, | |
4371 | PerlIOBase_clearerr, | |
4372 | PerlIOBase_setlinebuf, | |
4373 | PerlIOBuf_get_base, | |
4374 | PerlIOBuf_bufsiz, | |
4375 | PerlIOBuf_get_ptr, | |
4376 | PerlIOBuf_get_cnt, | |
4377 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4378 | }; |
4379 | ||
66ecd56b | 4380 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4381 | /* |
71200d45 | 4382 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4383 | */ |
5e2ab84b NIS |
4384 | |
4385 | IV | |
f62ce20a | 4386 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4387 | { |
14a5cf38 | 4388 | /* |
71200d45 | 4389 | * Should never happen |
14a5cf38 JH |
4390 | */ |
4391 | PerlIO_flush(f); | |
4392 | return 0; | |
5e2ab84b NIS |
4393 | } |
4394 | ||
4395 | IV | |
f62ce20a | 4396 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4397 | { |
14a5cf38 | 4398 | /* |
71200d45 | 4399 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4400 | */ |
4401 | PerlIO_flush(f); | |
4402 | return PerlIO_close(f); | |
5e2ab84b NIS |
4403 | } |
4404 | ||
94a175e1 | 4405 | IV |
f62ce20a | 4406 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4407 | { |
14a5cf38 | 4408 | /* |
71200d45 | 4409 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4410 | */ |
4411 | PerlIO_flush(f); | |
4412 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4413 | } |
4414 | ||
4415 | ||
4416 | IV | |
f62ce20a | 4417 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4418 | { |
dcda55fc | 4419 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4420 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4421 | Safefree(b->buf); |
14a5cf38 JH |
4422 | b->buf = NULL; |
4423 | } | |
4424 | PerlIO_pop(aTHX_ f); | |
4425 | return 0; | |
5e2ab84b NIS |
4426 | } |
4427 | ||
4428 | void | |
f62ce20a | 4429 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4430 | { |
14a5cf38 JH |
4431 | if (cnt <= 0) { |
4432 | PerlIO_flush(f); | |
4433 | } | |
4434 | else { | |
f62ce20a | 4435 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4436 | } |
5e2ab84b NIS |
4437 | } |
4438 | ||
4439 | IV | |
2dc2558e | 4440 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4441 | { |
de009b76 | 4442 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4443 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4444 | /* |
71200d45 NIS |
4445 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4446 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4447 | */ |
4448 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4449 | (PerlIOBase(PerlIONext(f))-> | |
4450 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4451 | return code; | |
5e2ab84b NIS |
4452 | } |
4453 | ||
4454 | SSize_t | |
f62ce20a | 4455 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4456 | { |
14a5cf38 JH |
4457 | SSize_t avail = PerlIO_get_cnt(f); |
4458 | SSize_t got = 0; | |
94e529cc | 4459 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4460 | avail = count; |
4461 | if (avail > 0) | |
f62ce20a | 4462 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4463 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4464 | const SSize_t more = |
14a5cf38 JH |
4465 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4466 | if (more >= 0 || got == 0) | |
4467 | got += more; | |
4468 | } | |
4469 | return got; | |
5e2ab84b NIS |
4470 | } |
4471 | ||
27da23d5 | 4472 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4473 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4474 | "pending", |
4475 | sizeof(PerlIOBuf), | |
86e05cf2 | 4476 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4477 | PerlIOPending_pushed, |
44798d05 | 4478 | PerlIOBuf_popped, |
14a5cf38 | 4479 | NULL, |
86e05cf2 | 4480 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4481 | NULL, |
4482 | PerlIOBase_fileno, | |
71200d45 | 4483 | PerlIOBuf_dup, |
14a5cf38 JH |
4484 | PerlIOPending_read, |
4485 | PerlIOBuf_unread, | |
4486 | PerlIOBuf_write, | |
4487 | PerlIOPending_seek, | |
4488 | PerlIOBuf_tell, | |
4489 | PerlIOPending_close, | |
4490 | PerlIOPending_flush, | |
4491 | PerlIOPending_fill, | |
4492 | PerlIOBase_eof, | |
4493 | PerlIOBase_error, | |
4494 | PerlIOBase_clearerr, | |
4495 | PerlIOBase_setlinebuf, | |
4496 | PerlIOBuf_get_base, | |
4497 | PerlIOBuf_bufsiz, | |
4498 | PerlIOBuf_get_ptr, | |
4499 | PerlIOBuf_get_cnt, | |
4500 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4501 | }; |
4502 | ||
4503 | ||
4504 | ||
4505 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4506 | /* |
4507 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4508 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4509 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4510 | * |
4511 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4512 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4513 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4514 | * that it ends at c->nl; these two cases can be distinguished by | |
4515 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4516 | * _unread() and _flush() calls. | |
4517 | * It only matters for read operations. | |
66ecd56b NIS |
4518 | */ |
4519 | ||
14a5cf38 | 4520 | typedef struct { |
22569500 NIS |
4521 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4522 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4523 | * buffer */ |
99efab12 NIS |
4524 | } PerlIOCrlf; |
4525 | ||
ff1e3883 JD |
4526 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4527 | * Otherwise the :crlf layer would always revert back to | |
4528 | * raw mode. | |
4529 | */ | |
4530 | static void | |
4531 | S_inherit_utf8_flag(PerlIO *f) | |
4532 | { | |
4533 | PerlIO *g = PerlIONext(f); | |
4534 | if (PerlIOValid(g)) { | |
4535 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4536 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4537 | } | |
4538 | } | |
4539 | } | |
4540 | ||
f5b9d040 | 4541 | IV |
2dc2558e | 4542 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4543 | { |
14a5cf38 JH |
4544 | IV code; |
4545 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4546 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4547 | #if 0 |
e17bc05a | 4548 | DEBUG_i( |
14a5cf38 | 4549 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4550 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4551 | PerlIOBase(f)->flags); |
e17bc05a | 4552 | ); |
5e2ab84b | 4553 | #endif |
8229d19f | 4554 | { |
5da08ab0 LT |
4555 | /* If the old top layer is a CRLF layer, reactivate it (if |
4556 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4557 | PerlIO *g = PerlIONext(f); |
7826b36f | 4558 | if (PerlIOValid(g)) { |
8229d19f JH |
4559 | PerlIOl *b = PerlIOBase(g); |
4560 | if (b && b->tab == &PerlIO_crlf) { | |
4561 | if (!(b->flags & PERLIO_F_CRLF)) | |
4562 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4563 | S_inherit_utf8_flag(g); |
8229d19f JH |
4564 | PerlIO_pop(aTHX_ f); |
4565 | return code; | |
7826b36f | 4566 | } |
8229d19f JH |
4567 | } |
4568 | } | |
ff1e3883 | 4569 | S_inherit_utf8_flag(f); |
14a5cf38 | 4570 | return code; |
f5b9d040 NIS |
4571 | } |
4572 | ||
4573 | ||
99efab12 | 4574 | SSize_t |
f62ce20a | 4575 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4576 | { |
dcda55fc | 4577 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4578 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4579 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4580 | c->nl = NULL; |
4581 | } | |
4582 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4583 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4584 | else { |
4585 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4586 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4587 | SSize_t unread = 0; | |
4588 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4589 | PerlIO_flush(f); | |
4590 | if (!b->buf) | |
4591 | PerlIO_get_base(f); | |
4592 | if (b->buf) { | |
4593 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4594 | b->end = b->ptr = b->buf + b->bufsiz; | |
4595 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4596 | b->posn -= b->bufsiz; | |
4597 | } | |
4598 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4599 | const int ch = *--buf; |
14a5cf38 JH |
4600 | if (ch == '\n') { |
4601 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4602 | *--(b->ptr) = NATIVE_0xa; |
4603 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4604 | unread++; |
4605 | count--; | |
4606 | } | |
4607 | else { | |
93c2c2ec | 4608 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4609 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4610 | '\r' */ | |
93c2c2ec IZ |
4611 | unread++; |
4612 | count--; | |
14a5cf38 JH |
4613 | } |
4614 | } | |
4615 | else { | |
4616 | *--(b->ptr) = ch; | |
4617 | unread++; | |
4618 | count--; | |
4619 | } | |
4620 | } | |
4621 | } | |
ec1da995 LT |
4622 | if (count > 0) |
4623 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4624 | return unread; |
4625 | } | |
99efab12 NIS |
4626 | } |
4627 | ||
93c2c2ec | 4628 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4629 | SSize_t |
f62ce20a | 4630 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4631 | { |
dcda55fc | 4632 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4633 | if (!b->buf) |
4634 | PerlIO_get_base(f); | |
4635 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4636 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4637 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4638 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4639 | scan: |
76e6dc3a | 4640 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4641 | nl++; |
76e6dc3a | 4642 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4643 | test: |
4644 | if (nl + 1 < b->end) { | |
76e6dc3a | 4645 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4646 | *nl = '\n'; |
4647 | c->nl = nl; | |
4648 | } | |
4649 | else { | |
4650 | /* | |
71200d45 | 4651 | * Not CR,LF but just CR |
14a5cf38 JH |
4652 | */ |
4653 | nl++; | |
4654 | goto scan; | |
4655 | } | |
4656 | } | |
4657 | else { | |
4658 | /* | |
71200d45 | 4659 | * Blast - found CR as last char in buffer |
14a5cf38 | 4660 | */ |
e87a358a | 4661 | |
14a5cf38 JH |
4662 | if (b->ptr < nl) { |
4663 | /* | |
4664 | * They may not care, defer work as long as | |
71200d45 | 4665 | * possible |
14a5cf38 | 4666 | */ |
a0d1d361 | 4667 | c->nl = nl; |
14a5cf38 JH |
4668 | return (nl - b->ptr); |
4669 | } | |
4670 | else { | |
4671 | int code; | |
22569500 | 4672 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4673 | * flush() is concerned */ |
22569500 | 4674 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4675 | /* Note as we have moved buf up flush's |
4676 | posn += ptr-buf | |
4677 | will naturally make posn point at CR | |
4678 | */ | |
22569500 NIS |
4679 | b->bufsiz--; /* Buffer is thus smaller */ |
4680 | code = PerlIO_fill(f); /* Fetch some more */ | |
4681 | b->bufsiz++; /* Restore size for next time */ | |
4682 | b->buf--; /* Point at space */ | |
4683 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4684 | * off */ |
76e6dc3a | 4685 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4686 | if (code == 0) |
22569500 | 4687 | goto test; /* fill() call worked */ |
14a5cf38 | 4688 | /* |
71200d45 | 4689 | * CR at EOF - just fall through |
14a5cf38 | 4690 | */ |
a0d1d361 | 4691 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4692 | } |
4693 | } | |
4694 | } | |
4695 | } | |
4696 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4697 | } | |
4698 | return 0; | |
99efab12 NIS |
4699 | } |
4700 | ||
4701 | void | |
f62ce20a | 4702 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4703 | { |
dcda55fc AL |
4704 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4705 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4706 | if (!b->buf) |
4707 | PerlIO_get_base(f); | |
4708 | if (!ptr) { | |
a0d1d361 | 4709 | if (c->nl) { |
14a5cf38 | 4710 | ptr = c->nl + 1; |
76e6dc3a | 4711 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4712 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4713 | ptr--; |
4714 | } | |
4715 | } | |
14a5cf38 JH |
4716 | else { |
4717 | ptr = b->end; | |
14a5cf38 JH |
4718 | } |
4719 | ptr -= cnt; | |
4720 | } | |
4721 | else { | |
6f207bd3 | 4722 | NOOP; |
3b4bd3fd | 4723 | #if 0 |
14a5cf38 | 4724 | /* |
71200d45 | 4725 | * Test code - delete when it works ... |
14a5cf38 | 4726 | */ |
3b4bd3fd | 4727 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4728 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4729 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4730 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4731 | chk--; |
22569500 | 4732 | } |
14a5cf38 JH |
4733 | chk -= cnt; |
4734 | ||
a0d1d361 | 4735 | if (ptr != chk ) { |
99ef548b | 4736 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4737 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4738 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4739 | } |
99ef548b | 4740 | #endif |
14a5cf38 JH |
4741 | } |
4742 | if (c->nl) { | |
4743 | if (ptr > c->nl) { | |
4744 | /* | |
71200d45 | 4745 | * They have taken what we lied about |
14a5cf38 | 4746 | */ |
76e6dc3a | 4747 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4748 | c->nl = NULL; |
4749 | ptr++; | |
4750 | } | |
4751 | } | |
4752 | b->ptr = ptr; | |
4753 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4754 | } |
4755 | ||
4756 | SSize_t | |
f62ce20a | 4757 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4758 | { |
14a5cf38 | 4759 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4760 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4761 | else { |
dcda55fc | 4762 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4763 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4764 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4765 | if (!b->buf) |
4766 | PerlIO_get_base(f); | |
4767 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4768 | return 0; | |
4769 | while (buf < ebuf) { | |
dcda55fc | 4770 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4771 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4772 | while (buf < ebuf && b->ptr < eptr) { | |
4773 | if (*buf == '\n') { | |
4774 | if ((b->ptr + 2) > eptr) { | |
4775 | /* | |
71200d45 | 4776 | * Not room for both |
14a5cf38 JH |
4777 | */ |
4778 | PerlIO_flush(f); | |
4779 | break; | |
4780 | } | |
4781 | else { | |
76e6dc3a KW |
4782 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4783 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4784 | buf++; |
4785 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4786 | PerlIO_flush(f); | |
4787 | break; | |
4788 | } | |
4789 | } | |
4790 | } | |
4791 | else { | |
dcda55fc | 4792 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4793 | } |
4794 | if (b->ptr >= eptr) { | |
4795 | PerlIO_flush(f); | |
4796 | break; | |
4797 | } | |
4798 | } | |
4799 | } | |
4800 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4801 | PerlIO_flush(f); | |
4802 | return (buf - (STDCHAR *) vbuf); | |
4803 | } | |
99efab12 NIS |
4804 | } |
4805 | ||
4806 | IV | |
f62ce20a | 4807 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4808 | { |
dcda55fc | 4809 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4810 | if (c->nl) { |
76e6dc3a | 4811 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4812 | c->nl = NULL; |
4813 | } | |
f62ce20a | 4814 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4815 | } |
4816 | ||
86e05cf2 NIS |
4817 | IV |
4818 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4819 | { | |
4820 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4821 | /* In text mode - flush any pending stuff and flip it */ | |
4822 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4823 | #ifndef PERLIO_USING_CRLF | |
4824 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4825 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4826 | #endif |
4827 | } | |
4828 | return 0; | |
4829 | } | |
4830 | ||
27da23d5 | 4831 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4832 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4833 | "crlf", |
4834 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4835 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4836 | PerlIOCrlf_pushed, |
44798d05 | 4837 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4838 | PerlIOBuf_open, |
86e05cf2 | 4839 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4840 | NULL, |
4841 | PerlIOBase_fileno, | |
71200d45 | 4842 | PerlIOBuf_dup, |
de009b76 | 4843 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4844 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4845 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4846 | PerlIOBuf_seek, |
4847 | PerlIOBuf_tell, | |
4848 | PerlIOBuf_close, | |
4849 | PerlIOCrlf_flush, | |
4850 | PerlIOBuf_fill, | |
4851 | PerlIOBase_eof, | |
4852 | PerlIOBase_error, | |
4853 | PerlIOBase_clearerr, | |
4854 | PerlIOBase_setlinebuf, | |
4855 | PerlIOBuf_get_base, | |
4856 | PerlIOBuf_bufsiz, | |
4857 | PerlIOBuf_get_ptr, | |
4858 | PerlIOCrlf_get_cnt, | |
4859 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4860 | }; |
4861 | ||
9e353e3b | 4862 | PerlIO * |
e87a358a | 4863 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4864 | { |
a1ea730d | 4865 | if (!PL_perlio) { |
14a5cf38 JH |
4866 | PerlIO_stdstreams(aTHX); |
4867 | } | |
303f2dc3 | 4868 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4869 | } |
4870 | ||
9e353e3b | 4871 | PerlIO * |
e87a358a | 4872 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4873 | { |
a1ea730d | 4874 | if (!PL_perlio) { |
14a5cf38 JH |
4875 | PerlIO_stdstreams(aTHX); |
4876 | } | |
303f2dc3 | 4877 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4878 | } |
4879 | ||
9e353e3b | 4880 | PerlIO * |
e87a358a | 4881 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4882 | { |
a1ea730d | 4883 | if (!PL_perlio) { |
14a5cf38 JH |
4884 | PerlIO_stdstreams(aTHX); |
4885 | } | |
303f2dc3 | 4886 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4887 | } |
4888 | ||
4889 | /*--------------------------------------------------------------------------------------*/ | |
4890 | ||
9e353e3b NIS |
4891 | char * |
4892 | PerlIO_getname(PerlIO *f, char *buf) | |
4893 | { | |
a15cef0c | 4894 | #ifdef VMS |
dbf7dff6 | 4895 | dTHX; |
73d840c0 | 4896 | char *name = NULL; |
7659f319 | 4897 | bool exported = FALSE; |
14a5cf38 | 4898 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4899 | if (!stdio) { |
4900 | stdio = PerlIO_exportFILE(f,0); | |
4901 | exported = TRUE; | |
4902 | } | |
4903 | if (stdio) { | |
14a5cf38 | 4904 | name = fgetname(stdio, buf); |
7659f319 CB |
4905 | if (exported) PerlIO_releaseFILE(f,stdio); |
4906 | } | |
73d840c0 | 4907 | return name; |
a15cef0c | 4908 | #else |
8772537c AL |
4909 | PERL_UNUSED_ARG(f); |
4910 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4911 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4912 | return NULL; |
a15cef0c | 4913 | #endif |
9e353e3b NIS |
4914 | } |
4915 | ||
4916 | ||
4917 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4918 | /* |
4919 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4920 | * terms of above |
14a5cf38 | 4921 | */ |
9e353e3b | 4922 | |
e87a358a NIS |
4923 | #undef PerlIO_fdopen |
4924 | PerlIO * | |
4925 | PerlIO_fdopen(int fd, const char *mode) | |
4926 | { | |
4927 | dTHX; | |
bd61b366 | 4928 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4929 | } |
4930 | ||
4931 | #undef PerlIO_open | |
4932 | PerlIO * | |
4933 | PerlIO_open(const char *path, const char *mode) | |
4934 | { | |
4935 | dTHX; | |
42d9b98d | 4936 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4937 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4938 | } |
4939 | ||
4940 | #undef Perlio_reopen | |
4941 | PerlIO * | |
4942 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4943 | { | |
4944 | dTHX; | |
42d9b98d | 4945 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4946 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4947 | } |
4948 | ||
9e353e3b | 4949 | #undef PerlIO_getc |
6f9d8c32 | 4950 | int |
9e353e3b | 4951 | PerlIO_getc(PerlIO *f) |
760ac839 | 4952 | { |
e87a358a | 4953 | dTHX; |
14a5cf38 | 4954 | STDCHAR buf[1]; |
de009b76 | 4955 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4956 | return (unsigned char) buf[0]; |
4957 | } | |
4958 | return EOF; | |
313ca112 NIS |
4959 | } |
4960 | ||
4961 | #undef PerlIO_ungetc | |
4962 | int | |
4963 | PerlIO_ungetc(PerlIO *f, int ch) | |
4964 | { | |
e87a358a | 4965 | dTHX; |
14a5cf38 JH |
4966 | if (ch != EOF) { |
4967 | STDCHAR buf = ch; | |
4968 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4969 | return ch; | |
4970 | } | |
4971 | return EOF; | |
760ac839 LW |
4972 | } |
4973 | ||
9e353e3b NIS |
4974 | #undef PerlIO_putc |
4975 | int | |
4976 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4977 | { |
e87a358a | 4978 | dTHX; |
14a5cf38 JH |
4979 | STDCHAR buf = ch; |
4980 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4981 | } |
4982 | ||
9e353e3b | 4983 | #undef PerlIO_puts |
760ac839 | 4984 | int |
9e353e3b | 4985 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4986 | { |
e87a358a | 4987 | dTHX; |
dcda55fc | 4988 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4989 | } |
4990 | ||
4991 | #undef PerlIO_rewind | |
4992 | void | |
c78749f2 | 4993 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4994 | { |
e87a358a | 4995 | dTHX; |
14a5cf38 JH |
4996 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4997 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4998 | } |
4999 | ||
5000 | #undef PerlIO_vprintf | |
5001 | int | |
5002 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5003 | { | |
14a5cf38 | 5004 | dTHX; |
53ce71d3 | 5005 | SV * sv; |
b83604b4 | 5006 | const char *s; |
14a5cf38 JH |
5007 | STRLEN len; |
5008 | SSize_t wrote; | |
2cc61e15 | 5009 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5010 | va_list apc; |
5011 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5012 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 5013 | va_end(apc); |
2cc61e15 | 5014 | #else |
53ce71d3 | 5015 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5016 | #endif |
b83604b4 | 5017 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5018 | wrote = PerlIO_write(f, s, len); |
5019 | SvREFCNT_dec(sv); | |
5020 | return wrote; | |
760ac839 LW |
5021 | } |
5022 | ||
5023 | #undef PerlIO_printf | |
6f9d8c32 | 5024 | int |
14a5cf38 | 5025 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5026 | { |
14a5cf38 JH |
5027 | va_list ap; |
5028 | int result; | |
5029 | va_start(ap, fmt); | |
5030 | result = PerlIO_vprintf(f, fmt, ap); | |
5031 | va_end(ap); | |
5032 | return result; | |
760ac839 LW |
5033 | } |
5034 | ||
5035 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5036 | int |
14a5cf38 | 5037 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5038 | { |
e87a358a | 5039 | dTHX; |
14a5cf38 JH |
5040 | va_list ap; |
5041 | int result; | |
5042 | va_start(ap, fmt); | |
5043 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5044 | va_end(ap); | |
5045 | return result; | |
760ac839 LW |
5046 | } |
5047 | ||
5048 | #undef PerlIO_tmpfile | |
5049 | PerlIO * | |
c78749f2 | 5050 | PerlIO_tmpfile(void) |
760ac839 | 5051 | { |
dbf7dff6 | 5052 | #ifndef WIN32 |
2941a2e1 | 5053 | dTHX; |
dbf7dff6 | 5054 | #endif |
2941a2e1 | 5055 | PerlIO *f = NULL; |
2941a2e1 | 5056 | #ifdef WIN32 |
de009b76 | 5057 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5058 | if (fd >= 0) |
5059 | f = PerlIO_fdopen(fd, "w+b"); | |
5060 | #else /* WIN32 */ | |
460c8493 | 5061 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5062 | int fd = -1; |
5063 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 5064 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 5065 | SV * sv = NULL; |
e57270be | 5066 | int old_umask = umask(0177); |
2941a2e1 JH |
5067 | /* |
5068 | * I have no idea how portable mkstemp() is ... NI-S | |
5069 | */ | |
7299ca58 | 5070 | if (tmpdir && *tmpdir) { |
0b99e986 | 5071 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5072 | sv = newSVpv(tmpdir, 0); |
0b99e986 RGS |
5073 | sv_catpv(sv, tempname + 4); |
5074 | fd = mkstemp(SvPVX(sv)); | |
5075 | } | |
5076 | if (fd < 0) { | |
e40f8e80 | 5077 | SvREFCNT_dec(sv); |
7299ca58 | 5078 | sv = NULL; |
0b99e986 RGS |
5079 | /* else we try /tmp */ |
5080 | fd = mkstemp(tempname); | |
5081 | } | |
b7561fc9 BF |
5082 | if (fd < 0) { |
5083 | /* Try cwd */ | |
5084 | sv = newSVpvs("."); | |
5085 | sv_catpv(sv, tempname + 4); | |
5086 | fd = mkstemp(SvPVX(sv)); | |
5087 | } | |
60f7fc1e | 5088 | umask(old_umask); |
2941a2e1 JH |
5089 | if (fd >= 0) { |
5090 | f = PerlIO_fdopen(fd, "w+"); | |
5091 | if (f) | |
5092 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5093 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5094 | } |
ef8d46e8 | 5095 | SvREFCNT_dec(sv); |
2941a2e1 | 5096 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5097 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5098 | |
085e731f CB |
5099 | if (stdio) |
5100 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5101 | ||
2941a2e1 JH |
5102 | # endif /* else HAS_MKSTEMP */ |
5103 | #endif /* else WIN32 */ | |
5104 | return f; | |
760ac839 LW |
5105 | } |
5106 | ||
0ea86a10 FC |
5107 | void |
5108 | Perl_PerlIO_save_errno(pTHX_ PerlIO *f) | |
5109 | { | |
e9b8343f | 5110 | PERL_UNUSED_CONTEXT; |
0ea86a10 FC |
5111 | if (!PerlIOValid(f)) |
5112 | return; | |
5113 | PerlIOBase(f)->err = errno; | |
5114 | #ifdef VMS | |
5115 | PerlIOBase(f)->os_err = vaxc$errno; | |
5116 | #elif defined(OS2) | |
5117 | PerlIOBase(f)->os_err = Perl_rc; | |
5118 | #elif defined(WIN32) | |
5119 | PerlIOBase(f)->os_err = GetLastError(); | |
5120 | #endif | |
5121 | } | |
5122 | ||
5123 | void | |
5124 | Perl_PerlIO_restore_errno(pTHX_ PerlIO *f) | |
5125 | { | |
e9b8343f | 5126 | PERL_UNUSED_CONTEXT; |
0ea86a10 FC |
5127 | if (!PerlIOValid(f)) |
5128 | return; | |
5129 | SETERRNO(PerlIOBase(f)->err, PerlIOBase(f)->os_err); | |
5130 | #ifdef OS2 | |
5131 | Perl_rc = PerlIOBase(f)->os_err); | |
5132 | #elif defined(WIN32) | |
5133 | SetLastError(PerlIOBase(f)->os_err); | |
5134 | #endif | |
5135 | } | |
5136 | ||
6f9d8c32 NIS |
5137 | #undef HAS_FSETPOS |
5138 | #undef HAS_FGETPOS | |
5139 | ||
760ac839 | 5140 | |
9e353e3b | 5141 | /*======================================================================================*/ |
14a5cf38 | 5142 | /* |
71200d45 NIS |
5143 | * Now some functions in terms of above which may be needed even if we are |
5144 | * not in true PerlIO mode | |
9e353e3b | 5145 | */ |
188f0c84 YO |
5146 | const char * |
5147 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5148 | { | |
8b850bd5 NC |
5149 | const char *direction = NULL; |
5150 | SV *layers; | |
188f0c84 YO |
5151 | /* |
5152 | * Need to supply default layer info from open.pm | |
5153 | */ | |
8b850bd5 NC |
5154 | |
5155 | if (!PL_curcop) | |
5156 | return NULL; | |
5157 | ||
5158 | if (mode && mode[0] != 'r') { | |
5159 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5160 | direction = "open>"; | |
5161 | } else { | |
5162 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5163 | direction = "open<"; | |
188f0c84 | 5164 | } |
8b850bd5 NC |
5165 | if (!direction) |
5166 | return NULL; | |
5167 | ||
20439bc7 | 5168 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5169 | |
5170 | assert(layers); | |
5171 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5172 | } |
5173 | ||
9e353e3b | 5174 | |
760ac839 LW |
5175 | #ifndef HAS_FSETPOS |
5176 | #undef PerlIO_setpos | |
5177 | int | |
766a733e | 5178 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5179 | { |
14a5cf38 | 5180 | if (SvOK(pos)) { |
e1a83e70 DD |
5181 | if (f) { |
5182 | dTHX; | |
5183 | STRLEN len; | |
5184 | const Off_t * const posn = (Off_t *) SvPV(pos, len); | |
5185 | if(len == sizeof(Off_t)) | |
5186 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5187 | } | |
14a5cf38 | 5188 | } |
93189314 | 5189 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5190 | return -1; |
760ac839 | 5191 | } |
c411622e | 5192 | #else |
c411622e | 5193 | #undef PerlIO_setpos |
5194 | int | |
766a733e | 5195 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5196 | { |
14a5cf38 | 5197 | if (SvOK(pos)) { |
e1a83e70 DD |
5198 | if (f) { |
5199 | dTHX; | |
5200 | STRLEN len; | |
5201 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); | |
5202 | if(len == sizeof(Fpos_t)) | |
2d4389e4 | 5203 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
e1a83e70 | 5204 | return fsetpos64(f, fpos); |
d9b3e12d | 5205 | #else |
e1a83e70 | 5206 | return fsetpos(f, fpos); |
d9b3e12d | 5207 | #endif |
14a5cf38 | 5208 | } |
766a733e | 5209 | } |
93189314 | 5210 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5211 | return -1; |
c411622e | 5212 | } |
5213 | #endif | |
760ac839 LW |
5214 | |
5215 | #ifndef HAS_FGETPOS | |
5216 | #undef PerlIO_getpos | |
5217 | int | |
766a733e | 5218 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5219 | { |
14a5cf38 JH |
5220 | dTHX; |
5221 | Off_t posn = PerlIO_tell(f); | |
5222 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5223 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5224 | } |
c411622e | 5225 | #else |
c411622e | 5226 | #undef PerlIO_getpos |
5227 | int | |
766a733e | 5228 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5229 | { |
14a5cf38 JH |
5230 | dTHX; |
5231 | Fpos_t fpos; | |
5232 | int code; | |
2d4389e4 | 5233 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5234 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5235 | #else |
14a5cf38 | 5236 | code = fgetpos(f, &fpos); |
d9b3e12d | 5237 | #endif |
14a5cf38 JH |
5238 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5239 | return code; | |
c411622e | 5240 | } |
5241 | #endif | |
760ac839 | 5242 | |
97cb92d6 | 5243 | #if !defined(HAS_VPRINTF) |
760ac839 LW |
5244 | |
5245 | int | |
c78749f2 | 5246 | vprintf(char *pat, char *args) |
662a7e3f CS |
5247 | { |
5248 | _doprnt(pat, args, stdout); | |
22569500 | 5249 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5250 | * value */ |
662a7e3f CS |
5251 | } |
5252 | ||
5253 | int | |
c78749f2 | 5254 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5255 | { |
5256 | _doprnt(pat, args, fd); | |
22569500 | 5257 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5258 | * value */ |
760ac839 LW |
5259 | } |
5260 | ||
5261 | #endif | |
5262 | ||
db6e00bd DD |
5263 | /* print a failure format string message to stderr and fail exit the process |
5264 | using only libc without depending on any perl data structures being | |
5265 | initialized. | |
5266 | */ | |
5267 | ||
5268 | void | |
5269 | Perl_noperl_die(const char* pat, ...) | |
5270 | { | |
5271 | va_list(arglist); | |
5272 | PERL_ARGS_ASSERT_NOPERL_DIE; | |
5273 | va_start(arglist, pat); | |
5274 | vfprintf(stderr, pat, arglist); | |
5275 | va_end(arglist); | |
5276 | exit(1); | |
5277 | } | |
5278 | ||
9cfa90c0 | 5279 | /* |
14d04a33 | 5280 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5281 | */ |