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 | ||
25bbd826 CB |
52 | #ifdef VMS |
53 | #include <rms.h> | |
54 | #endif | |
55 | ||
abf9167d DM |
56 | #define PerlIO_lockcnt(f) (((PerlIOl*)(f))->head->flags) |
57 | ||
1b7a0411 | 58 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 59 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 60 | if (PerlIOValid(f)) { \ |
46c461b5 | 61 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
62 | if (tab && tab->callback) \ |
63 | return (*tab->callback) args; \ | |
64 | else \ | |
65 | return PerlIOBase_ ## base args; \ | |
66 | } \ | |
67 | else \ | |
68 | SETERRNO(EBADF, SS_IVCHAN); \ | |
69 | return failure | |
70 | ||
71 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 72 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 73 | if (PerlIOValid(f)) { \ |
46c461b5 | 74 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
75 | if (tab && tab->callback) \ |
76 | return (*tab->callback) args; \ | |
77 | SETERRNO(EINVAL, LIB_INVARG); \ | |
78 | } \ | |
79 | else \ | |
80 | SETERRNO(EBADF, SS_IVCHAN); \ | |
81 | return failure | |
82 | ||
83 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 84 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 85 | if (PerlIOValid(f)) { \ |
46c461b5 | 86 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
87 | if (tab && tab->callback) \ |
88 | (*tab->callback) args; \ | |
89 | else \ | |
90 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
91 | } \ |
92 | else \ | |
93 | SETERRNO(EBADF, SS_IVCHAN) | |
94 | ||
95 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 96 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 97 | if (PerlIOValid(f)) { \ |
46c461b5 | 98 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
99 | if (tab && tab->callback) \ |
100 | (*tab->callback) args; \ | |
37725cdc NIS |
101 | else \ |
102 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
103 | } \ |
104 | else \ | |
105 | SETERRNO(EBADF, SS_IVCHAN) | |
106 | ||
89a3a251 JH |
107 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
108 | extern int fseeko(FILE *, off_t, int); | |
109 | extern off_t ftello(FILE *); | |
110 | #endif | |
111 | ||
76e6dc3a KW |
112 | #define NATIVE_0xd CR_NATIVE |
113 | #define NATIVE_0xa LF_NATIVE | |
114 | ||
a0c21aa1 JH |
115 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); |
116 | ||
71ab4674 SP |
117 | int |
118 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
119 | { | |
120 | /* | |
121 | * This used to be contents of do_binmode in doio.c | |
122 | */ | |
123 | #ifdef DOSISH | |
71ab4674 | 124 | dTHX; |
58c0efa5 | 125 | PERL_UNUSED_ARG(iotype); |
71ab4674 SP |
126 | #ifdef NETWARE |
127 | if (PerlLIO_setmode(fp, mode) != -1) { | |
128 | #else | |
129 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
130 | #endif | |
71ab4674 SP |
131 | return 1; |
132 | } | |
133 | else | |
134 | return 0; | |
71ab4674 SP |
135 | #else |
136 | # if defined(USEMYBINMODE) | |
137 | dTHX; | |
58c0efa5 RGS |
138 | # if defined(__CYGWIN__) |
139 | PERL_UNUSED_ARG(iotype); | |
140 | # endif | |
71ab4674 SP |
141 | if (my_binmode(fp, iotype, mode) != FALSE) |
142 | return 1; | |
143 | else | |
144 | return 0; | |
145 | # else | |
146 | PERL_UNUSED_ARG(fp); | |
147 | PERL_UNUSED_ARG(iotype); | |
148 | PERL_UNUSED_ARG(mode); | |
149 | return 1; | |
150 | # endif | |
151 | #endif | |
152 | } | |
71ab4674 | 153 | |
06c7082d | 154 | #ifndef O_ACCMODE |
22569500 | 155 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
156 | #endif |
157 | ||
158 | int | |
159 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
160 | { | |
de009b76 | 161 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
162 | int ix = 0; |
163 | int ptype; | |
164 | switch (result) { | |
165 | case O_RDONLY: | |
166 | ptype = IoTYPE_RDONLY; | |
167 | break; | |
168 | case O_WRONLY: | |
169 | ptype = IoTYPE_WRONLY; | |
170 | break; | |
171 | case O_RDWR: | |
172 | default: | |
173 | ptype = IoTYPE_RDWR; | |
174 | break; | |
175 | } | |
176 | if (writing) | |
177 | *writing = (result != O_RDONLY); | |
178 | ||
179 | if (result == O_RDONLY) { | |
180 | mode[ix++] = 'r'; | |
181 | } | |
182 | #ifdef O_APPEND | |
183 | else if (rawmode & O_APPEND) { | |
184 | mode[ix++] = 'a'; | |
185 | if (result != O_WRONLY) | |
186 | mode[ix++] = '+'; | |
187 | } | |
188 | #endif | |
189 | else { | |
190 | if (result == O_WRONLY) | |
191 | mode[ix++] = 'w'; | |
192 | else { | |
193 | mode[ix++] = 'r'; | |
194 | mode[ix++] = '+'; | |
195 | } | |
196 | } | |
43e5477e JH |
197 | #if O_BINARY != 0 |
198 | /* Unless O_BINARY is different from zero, bit-and:ing | |
199 | * with it won't do much good. */ | |
06c7082d NIS |
200 | if (rawmode & O_BINARY) |
201 | mode[ix++] = 'b'; | |
43e5477e | 202 | # endif |
06c7082d NIS |
203 | mode[ix] = '\0'; |
204 | return ptype; | |
205 | } | |
206 | ||
eb73beca NIS |
207 | #ifndef PERLIO_LAYERS |
208 | int | |
209 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
210 | { | |
6874a2de NIS |
211 | if (!names || !*names |
212 | || strEQ(names, ":crlf") | |
213 | || strEQ(names, ":raw") | |
214 | || strEQ(names, ":bytes") | |
215 | ) { | |
14a5cf38 JH |
216 | return 0; |
217 | } | |
218 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
219 | /* | |
71200d45 | 220 | * NOTREACHED |
14a5cf38 JH |
221 | */ |
222 | return -1; | |
eb73beca NIS |
223 | } |
224 | ||
13621cfb NIS |
225 | void |
226 | PerlIO_destruct(pTHX) | |
227 | { | |
228 | } | |
229 | ||
f5b9d040 NIS |
230 | int |
231 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
232 | { | |
14a5cf38 | 233 | return perlsio_binmode(fp, iotype, mode); |
f5b9d040 | 234 | } |
60382766 | 235 | |
e0fa5af2 | 236 | PerlIO * |
ecdeb87c | 237 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 238 | { |
a0fd4948 | 239 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e | 240 | return NULL; |
faf55891 | 241 | #elif defined(PERL_IMPLICIT_SYS) |
22569500 | 242 | return PerlSIO_fdupopen(f); |
0553478e | 243 | #else |
faf55891 | 244 | # ifdef WIN32 |
30753f56 | 245 | return win32_fdupopen(f); |
faf55891 | 246 | # else |
e0fa5af2 | 247 | if (f) { |
884fc2d3 | 248 | const int fd = PerlLIO_dup_cloexec(PerlIO_fileno(f)); |
e0fa5af2 | 249 | if (fd >= 0) { |
06c7082d | 250 | char mode[8]; |
faf55891 | 251 | # ifdef DJGPP |
dcda55fc | 252 | const int omode = djgpp_get_stream_mode(f); |
faf55891 | 253 | # else |
dcda55fc | 254 | const int omode = fcntl(fd, F_GETFL); |
faf55891 | 255 | # endif |
06c7082d | 256 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 257 | /* the r+ is a hack */ |
06c7082d | 258 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
259 | } |
260 | return NULL; | |
261 | } | |
262 | else { | |
93189314 | 263 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 264 | } |
faf55891 | 265 | # endif |
e0fa5af2 | 266 | return NULL; |
0553478e | 267 | #endif |
e0fa5af2 NIS |
268 | } |
269 | ||
270 | ||
14a5cf38 | 271 | /* |
71200d45 | 272 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 273 | */ |
ee518936 NIS |
274 | |
275 | PerlIO * | |
14a5cf38 JH |
276 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
277 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
278 | { | |
7cf31beb NIS |
279 | if (narg) { |
280 | if (narg > 1) { | |
3b8752bb | 281 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 282 | } |
14a5cf38 JH |
283 | if (*args == &PL_sv_undef) |
284 | return PerlIO_tmpfile(); | |
285 | else { | |
41188aa0 | 286 | STRLEN len; |
74622586 | 287 | const char *name = SvPV_const(*args, len); |
41188aa0 | 288 | if (!IS_SAFE_PATHNAME(name, len, "open")) |
c8028aa6 TC |
289 | return NULL; |
290 | ||
3b6c1aba | 291 | if (*mode == IoTYPE_NUMERIC) { |
884fc2d3 | 292 | fd = PerlLIO_open3_cloexec(name, imode, perm); |
14a5cf38 | 293 | if (fd >= 0) |
de009b76 | 294 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
295 | } |
296 | else if (old) { | |
297 | return PerlIO_reopen(name, mode, old); | |
298 | } | |
299 | else { | |
300 | return PerlIO_open(name, mode); | |
301 | } | |
302 | } | |
303 | } | |
304 | else { | |
305 | return PerlIO_fdopen(fd, (char *) mode); | |
306 | } | |
307 | return NULL; | |
ee518936 NIS |
308 | } |
309 | ||
15eb3045 | 310 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
0c4f7ff0 NIS |
311 | XS(XS_PerlIO__Layer__find) |
312 | { | |
14a5cf38 JH |
313 | dXSARGS; |
314 | if (items < 2) | |
315 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
316 | else { | |
dcda55fc | 317 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
318 | ST(0) = (strEQ(name, "crlf") |
319 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
320 | XSRETURN(1); | |
321 | } | |
0c4f7ff0 NIS |
322 | } |
323 | ||
324 | ||
325 | void | |
326 | Perl_boot_core_PerlIO(pTHX) | |
327 | { | |
14a5cf38 | 328 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
329 | } |
330 | ||
ac27b0f5 NIS |
331 | #endif |
332 | ||
32e30700 | 333 | |
6f9d8c32 | 334 | /*======================================================================================*/ |
14a5cf38 | 335 | /* |
71200d45 | 336 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 337 | */ |
760ac839 | 338 | |
76ced9ad NIS |
339 | #include "perliol.h" |
340 | ||
6f9d8c32 | 341 | void |
14a5cf38 JH |
342 | PerlIO_debug(const char *fmt, ...) |
343 | { | |
14a5cf38 JH |
344 | va_list ap; |
345 | dSYS; | |
e17bc05a TC |
346 | |
347 | if (!DEBUG_i_TEST) | |
348 | return; | |
349 | ||
d732c5e5 JH |
350 | va_start(ap, fmt); |
351 | ||
582588d2 | 352 | if (!PL_perlio_debug_fd) { |
284167a5 | 353 | if (!TAINTING_get && |
985213f2 AB |
354 | PerlProc_getuid() == PerlProc_geteuid() && |
355 | PerlProc_getgid() == PerlProc_getegid()) { | |
582588d2 NC |
356 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
357 | if (s && *s) | |
0b5984d3 Z |
358 | PL_perlio_debug_fd = PerlLIO_open3_cloexec(s, |
359 | O_WRONLY | O_CREAT | O_APPEND, 0666); | |
582588d2 | 360 | else |
0b5984d3 | 361 | PL_perlio_debug_fd = PerlLIO_dup_cloexec(2); /* stderr */ |
582588d2 | 362 | } else { |
64320867 TC |
363 | /* tainting or set*id, so ignore the environment and send the |
364 | debug output to stderr, like other -D switches. */ | |
0b5984d3 | 365 | PL_perlio_debug_fd = PerlLIO_dup_cloexec(2); /* stderr */ |
582588d2 | 366 | } |
14a5cf38 | 367 | } |
27da23d5 | 368 | if (PL_perlio_debug_fd > 0) { |
70ace5da | 369 | #ifdef USE_ITHREADS |
dcda55fc | 370 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
371 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
372 | char buffer[1024]; | |
1208b3dd JH |
373 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
374 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
b469f1e0 | 375 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2)); |
70ace5da | 376 | #else |
dcda55fc AL |
377 | const char *s = CopFILE(PL_curcop); |
378 | STRLEN len; | |
550e2ce0 NC |
379 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
380 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
381 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
382 | ||
b83604b4 | 383 | s = SvPV_const(sv, len); |
b469f1e0 | 384 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len)); |
14a5cf38 | 385 | SvREFCNT_dec(sv); |
70ace5da | 386 | #endif |
14a5cf38 JH |
387 | } |
388 | va_end(ap); | |
6f9d8c32 NIS |
389 | } |
390 | ||
9e353e3b NIS |
391 | /*--------------------------------------------------------------------------------------*/ |
392 | ||
14a5cf38 | 393 | /* |
71200d45 | 394 | * Inner level routines |
14a5cf38 | 395 | */ |
9e353e3b | 396 | |
16865ff7 DM |
397 | /* check that the head field of each layer points back to the head */ |
398 | ||
399 | #ifdef DEBUGGING | |
400 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
401 | static void | |
402 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
403 | { | |
404 | PerlIOl *head, *p; | |
405 | int seen = 0; | |
dd791c72 JH |
406 | #ifndef PERL_IMPLICIT_SYS |
407 | PERL_UNUSED_CONTEXT; | |
408 | #endif | |
16865ff7 DM |
409 | if (!PerlIOValid(f)) |
410 | return; | |
411 | p = head = PerlIOBase(f)->head; | |
412 | assert(p); | |
413 | do { | |
414 | assert(p->head == head); | |
415 | if (p == (PerlIOl*)f) | |
416 | seen = 1; | |
417 | p = p->next; | |
418 | } while (p); | |
419 | assert(seen); | |
420 | } | |
421 | #else | |
422 | # define VERIFY_HEAD(f) | |
423 | #endif | |
424 | ||
425 | ||
14a5cf38 | 426 | /* |
71200d45 | 427 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 428 | */ |
05d1247b | 429 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 430 | |
8995e67d DM |
431 | static void |
432 | PerlIO_init_table(pTHX) | |
433 | { | |
434 | if (PL_perlio) | |
435 | return; | |
436 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
437 | } | |
438 | ||
439 | ||
440 | ||
760ac839 | 441 | PerlIO * |
5f1a76d0 | 442 | PerlIO_allocate(pTHX) |
6f9d8c32 | 443 | { |
14a5cf38 | 444 | /* |
71200d45 | 445 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 446 | */ |
303f2dc3 DM |
447 | PerlIOl **last; |
448 | PerlIOl *f; | |
a1ea730d | 449 | last = &PL_perlio; |
14a5cf38 JH |
450 | while ((f = *last)) { |
451 | int i; | |
303f2dc3 | 452 | last = (PerlIOl **) (f); |
14a5cf38 | 453 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 454 | if (!((++f)->next)) { |
4e0ef342 | 455 | goto good_exit; |
14a5cf38 JH |
456 | } |
457 | } | |
458 | } | |
303f2dc3 | 459 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
460 | if (!f) { |
461 | return NULL; | |
462 | } | |
303f2dc3 | 463 | *last = (PerlIOl*) f++; |
4e0ef342 DD |
464 | |
465 | good_exit: | |
abf9167d | 466 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 467 | f->tab = NULL; |
16865ff7 | 468 | f->head = f; |
303f2dc3 | 469 | return (PerlIO*) f; |
05d1247b NIS |
470 | } |
471 | ||
a1ea730d NIS |
472 | #undef PerlIO_fdupopen |
473 | PerlIO * | |
ecdeb87c | 474 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 475 | { |
04892f78 | 476 | if (PerlIOValid(f)) { |
de009b76 | 477 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
e17bc05a | 478 | DEBUG_i( PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param) ); |
210e727c JH |
479 | if (tab && tab->Dup) |
480 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
481 | else { |
482 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
483 | } | |
a1ea730d | 484 | } |
210e727c JH |
485 | else |
486 | SETERRNO(EBADF, SS_IVCHAN); | |
487 | ||
488 | return NULL; | |
a1ea730d NIS |
489 | } |
490 | ||
491 | void | |
303f2dc3 | 492 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 493 | { |
303f2dc3 | 494 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
495 | if (table) { |
496 | int i; | |
303f2dc3 | 497 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 498 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
499 | PerlIOl * const f = table + i; |
500 | if (f->next) { | |
501 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
502 | } |
503 | } | |
3a1ee7e8 | 504 | Safefree(table); |
14a5cf38 | 505 | *tablep = NULL; |
05d1247b | 506 | } |
05d1247b NIS |
507 | } |
508 | ||
fcf2db38 NIS |
509 | |
510 | PerlIO_list_t * | |
3a1ee7e8 | 511 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 512 | { |
14a5cf38 | 513 | PerlIO_list_t *list; |
96a5add6 | 514 | PERL_UNUSED_CONTEXT; |
a02a5408 | 515 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
516 | list->refcnt = 1; |
517 | return list; | |
fcf2db38 NIS |
518 | } |
519 | ||
520 | void | |
3a1ee7e8 | 521 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 522 | { |
14a5cf38 JH |
523 | if (list) { |
524 | if (--list->refcnt == 0) { | |
525 | if (list->array) { | |
14a5cf38 | 526 | IV i; |
ef8d46e8 VP |
527 | for (i = 0; i < list->cur; i++) |
528 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
529 | Safefree(list->array); |
530 | } | |
531 | Safefree(list); | |
532 | } | |
533 | } | |
fcf2db38 NIS |
534 | } |
535 | ||
536 | void | |
3a1ee7e8 | 537 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 538 | { |
334e202e | 539 | PerlIO_pair_t *p; |
b37c2d43 AL |
540 | PERL_UNUSED_CONTEXT; |
541 | ||
14a5cf38 | 542 | if (list->cur >= list->len) { |
00195859 | 543 | const IV new_len = list->len + 8; |
14a5cf38 | 544 | if (list->array) |
00195859 | 545 | Renew(list->array, new_len, PerlIO_pair_t); |
14a5cf38 | 546 | else |
00195859 HS |
547 | Newx(list->array, new_len, PerlIO_pair_t); |
548 | list->len = new_len; | |
14a5cf38 JH |
549 | } |
550 | p = &(list->array[list->cur++]); | |
551 | p->funcs = funcs; | |
552 | if ((p->arg = arg)) { | |
f84c484e | 553 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 554 | } |
fcf2db38 NIS |
555 | } |
556 | ||
3a1ee7e8 NIS |
557 | PerlIO_list_t * |
558 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
559 | { | |
b37c2d43 | 560 | PerlIO_list_t *list = NULL; |
694c95cf JH |
561 | if (proto) { |
562 | int i; | |
563 | list = PerlIO_list_alloc(aTHX); | |
564 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 565 | SV *arg = proto->array[i].arg; |
24d147a6 | 566 | #ifdef USE_ITHREADS |
a951d81d BL |
567 | if (arg && param) |
568 | arg = sv_dup(arg, param); | |
569 | #else | |
570 | PERL_UNUSED_ARG(param); | |
571 | #endif | |
694c95cf JH |
572 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
573 | } | |
3a1ee7e8 NIS |
574 | } |
575 | return list; | |
576 | } | |
4a4a6116 | 577 | |
05d1247b | 578 | void |
3a1ee7e8 | 579 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 580 | { |
3aaf42a7 | 581 | #ifdef USE_ITHREADS |
303f2dc3 DM |
582 | PerlIOl **table = &proto->Iperlio; |
583 | PerlIOl *f; | |
3a1ee7e8 NIS |
584 | PL_perlio = NULL; |
585 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
586 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 587 | PerlIO_init_table(aTHX); |
e17bc05a | 588 | DEBUG_i( PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto) ); |
3a1ee7e8 NIS |
589 | while ((f = *table)) { |
590 | int i; | |
303f2dc3 | 591 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 592 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
593 | if (f->next) { |
594 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
595 | } |
596 | f++; | |
597 | } | |
598 | } | |
1b6737cc | 599 | #else |
a25429c6 | 600 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
601 | PERL_UNUSED_ARG(proto); |
602 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 603 | #endif |
9a6404c5 DM |
604 | } |
605 | ||
606 | void | |
13621cfb NIS |
607 | PerlIO_destruct(pTHX) |
608 | { | |
303f2dc3 DM |
609 | PerlIOl **table = &PL_perlio; |
610 | PerlIOl *f; | |
694c95cf | 611 | #ifdef USE_ITHREADS |
e17bc05a | 612 | DEBUG_i( PerlIO_debug("Destruct %p\n",(void*)aTHX) ); |
694c95cf | 613 | #endif |
14a5cf38 JH |
614 | while ((f = *table)) { |
615 | int i; | |
303f2dc3 | 616 | table = (PerlIOl **) (f++); |
14a5cf38 | 617 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 618 | PerlIO *x = &(f->next); |
dcda55fc | 619 | const PerlIOl *l; |
14a5cf38 | 620 | while ((l = *x)) { |
cc6623a8 | 621 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
e17bc05a | 622 | DEBUG_i( PerlIO_debug("Destruct popping %s\n", l->tab->name) ); |
14a5cf38 JH |
623 | PerlIO_flush(x); |
624 | PerlIO_pop(aTHX_ x); | |
625 | } | |
626 | else { | |
627 | x = PerlIONext(x); | |
628 | } | |
629 | } | |
630 | f++; | |
631 | } | |
632 | } | |
13621cfb NIS |
633 | } |
634 | ||
635 | void | |
a999f61b | 636 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 637 | { |
dcda55fc | 638 | const PerlIOl *l = *f; |
16865ff7 | 639 | VERIFY_HEAD(f); |
14a5cf38 | 640 | if (l) { |
e17bc05a TC |
641 | DEBUG_i( PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
642 | l->tab ? l->tab->name : "(Null)") ); | |
cc6623a8 | 643 | if (l->tab && l->tab->Popped) { |
14a5cf38 JH |
644 | /* |
645 | * If popped returns non-zero do not free its layer structure | |
646 | * it has either done so itself, or it is shared and still in | |
71200d45 | 647 | * use |
14a5cf38 | 648 | */ |
f62ce20a | 649 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
650 | return; |
651 | } | |
abf9167d DM |
652 | if (PerlIO_lockcnt(f)) { |
653 | /* we're in use; defer freeing the structure */ | |
654 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
655 | PerlIOBase(f)->tab = NULL; | |
656 | } | |
657 | else { | |
658 | *f = l->next; | |
659 | Safefree(l); | |
660 | } | |
661 | ||
a8c08ecd | 662 | } |
6f9d8c32 NIS |
663 | } |
664 | ||
39f7a870 JH |
665 | /* Return as an array the stack of layers on a filehandle. Note that |
666 | * the stack is returned top-first in the array, and there are three | |
667 | * times as many array elements as there are layers in the stack: the | |
668 | * first element of a layer triplet is the name, the second one is the | |
669 | * arguments, and the third one is the flags. */ | |
670 | ||
671 | AV * | |
672 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
673 | { | |
dcda55fc | 674 | AV * const av = newAV(); |
39f7a870 | 675 | |
dcda55fc AL |
676 | if (PerlIOValid(f)) { |
677 | PerlIOl *l = PerlIOBase(f); | |
678 | ||
679 | while (l) { | |
92e45a3e NC |
680 | /* There is some collusion in the implementation of |
681 | XS_PerlIO_get_layers - it knows that name and flags are | |
682 | generated as fresh SVs here, and takes advantage of that to | |
683 | "copy" them by taking a reference. If it changes here, it needs | |
684 | to change there too. */ | |
dcda55fc AL |
685 | SV * const name = l->tab && l->tab->name ? |
686 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
687 | SV * const arg = l->tab && l->tab->Getarg ? | |
688 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
689 | av_push(av, name); | |
690 | av_push(av, arg); | |
691 | av_push(av, newSViv((IV)l->flags)); | |
692 | l = l->next; | |
693 | } | |
694 | } | |
39f7a870 | 695 | |
dcda55fc | 696 | return av; |
39f7a870 JH |
697 | } |
698 | ||
9e353e3b | 699 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 700 | /* |
71200d45 | 701 | * XS Interface for perl code |
14a5cf38 | 702 | */ |
9e353e3b | 703 | |
fcf2db38 | 704 | PerlIO_funcs * |
2edd7e44 | 705 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 706 | { |
20b7effb | 707 | |
14a5cf38 JH |
708 | IV i; |
709 | if ((SSize_t) len <= 0) | |
710 | len = strlen(name); | |
3a1ee7e8 | 711 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 712 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
713 | const STRLEN this_len = strlen(f->name); |
714 | if (this_len == len && memEQ(f->name, name, len)) { | |
e17bc05a | 715 | DEBUG_i( PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f) ); |
14a5cf38 JH |
716 | return f; |
717 | } | |
718 | } | |
3a1ee7e8 NIS |
719 | if (load && PL_subname && PL_def_layerlist |
720 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
721 | if (PL_in_load_module) { |
722 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
723 | return NULL; | |
724 | } else { | |
396482e1 | 725 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 726 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 727 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 728 | ENTER; |
4fa7c2bf | 729 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 730 | if (cv) { |
9cfa90c0 | 731 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 732 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 733 | } |
4fa7c2bf | 734 | PL_in_load_module = TRUE; |
d7a09b41 SR |
735 | /* |
736 | * The two SVs are magically freed by load_module | |
737 | */ | |
a0714e2c | 738 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
739 | LEAVE; |
740 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
741 | } | |
14a5cf38 | 742 | } |
e17bc05a | 743 | DEBUG_i( PerlIO_debug("Cannot find %.*s\n", (int) len, name) ); |
14a5cf38 | 744 | return NULL; |
f3862f8b NIS |
745 | } |
746 | ||
2a1bc955 | 747 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
748 | |
749 | static int | |
750 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
751 | { | |
14a5cf38 | 752 | if (SvROK(sv)) { |
159b6efe | 753 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
754 | PerlIO * const ifp = IoIFP(io); |
755 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
756 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
757 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
758 | } |
759 | return 0; | |
b13b2135 NIS |
760 | } |
761 | ||
762 | static int | |
763 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
764 | { | |
14a5cf38 | 765 | if (SvROK(sv)) { |
159b6efe | 766 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
767 | PerlIO * const ifp = IoIFP(io); |
768 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
769 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
770 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
771 | } |
772 | return 0; | |
b13b2135 NIS |
773 | } |
774 | ||
775 | static int | |
776 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
777 | { | |
be2597df | 778 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 779 | return 0; |
b13b2135 NIS |
780 | } |
781 | ||
782 | static int | |
783 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
784 | { | |
be2597df | 785 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 786 | return 0; |
b13b2135 NIS |
787 | } |
788 | ||
789 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
790 | perlio_mg_get, |
791 | perlio_mg_set, | |
22569500 | 792 | NULL, /* len */ |
14a5cf38 JH |
793 | perlio_mg_clear, |
794 | perlio_mg_free | |
b13b2135 NIS |
795 | }; |
796 | ||
15eb3045 | 797 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
798 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
799 | { | |
14a5cf38 | 800 | dXSARGS; |
dcda55fc AL |
801 | SV * const sv = SvRV(ST(1)); |
802 | AV * const av = newAV(); | |
14a5cf38 JH |
803 | MAGIC *mg; |
804 | int count = 0; | |
805 | int i; | |
ad64d0ec | 806 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
807 | SvRMAGICAL_off(sv); |
808 | mg = mg_find(sv, PERL_MAGIC_ext); | |
809 | mg->mg_virtual = &perlio_vtab; | |
810 | mg_magical(sv); | |
be2597df | 811 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
812 | for (i = 2; i < items; i++) { |
813 | STRLEN len; | |
dcda55fc AL |
814 | const char * const name = SvPV_const(ST(i), len); |
815 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 816 | if (layer) { |
b37c2d43 | 817 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
818 | } |
819 | else { | |
820 | ST(count) = ST(i); | |
821 | count++; | |
822 | } | |
823 | } | |
824 | SvREFCNT_dec(av); | |
825 | XSRETURN(count); | |
826 | } | |
827 | ||
b8fda935 | 828 | #endif /* USE_ATTRIBUTES_FOR_PERLIO */ |
2a1bc955 | 829 | |
e3f3bf95 NIS |
830 | SV * |
831 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 832 | { |
da51bb9b | 833 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 834 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 835 | return sv; |
e3f3bf95 NIS |
836 | } |
837 | ||
15eb3045 | 838 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 839 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 840 | { |
486ec47a | 841 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
842 | during loading of layers. |
843 | */ | |
844 | dXSARGS; | |
5347602a | 845 | PERL_UNUSED_VAR(items); |
e17bc05a TC |
846 | DEBUG_i( |
847 | if (items) | |
848 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))) ); | |
c9bca74a NIS |
849 | XSRETURN(0); |
850 | } | |
851 | ||
15eb3045 | 852 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 853 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 854 | { |
14a5cf38 JH |
855 | dXSARGS; |
856 | if (items < 2) | |
857 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
858 | else { | |
de009b76 | 859 | STRLEN len; |
46c461b5 | 860 | const char * const name = SvPV_const(ST(1), len); |
f814d560 | 861 | const bool load = (items > 2) ? SvTRUE_NN(ST(2)) : 0; |
46c461b5 | 862 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
863 | ST(0) = |
864 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
865 | &PL_sv_undef; | |
866 | XSRETURN(1); | |
867 | } | |
0c4f7ff0 NIS |
868 | } |
869 | ||
e3f3bf95 NIS |
870 | void |
871 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
872 | { | |
3a1ee7e8 NIS |
873 | if (!PL_known_layers) |
874 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 875 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
e17bc05a | 876 | DEBUG_i( PerlIO_debug("define %s %p\n", tab->name, (void*)tab) ); |
f3862f8b NIS |
877 | } |
878 | ||
1141d9f8 | 879 | int |
fcf2db38 | 880 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 881 | { |
14a5cf38 JH |
882 | if (names) { |
883 | const char *s = names; | |
884 | while (*s) { | |
885 | while (isSPACE(*s) || *s == ':') | |
886 | s++; | |
887 | if (*s) { | |
888 | STRLEN llen = 0; | |
889 | const char *e = s; | |
bd61b366 | 890 | const char *as = NULL; |
14a5cf38 JH |
891 | STRLEN alen = 0; |
892 | if (!isIDFIRST(*s)) { | |
893 | /* | |
894 | * Message is consistent with how attribute lists are | |
895 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 896 | * seen as an invalid separator character. |
14a5cf38 | 897 | */ |
de009b76 | 898 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
899 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
900 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
901 | q, *s, q, s); | |
93189314 | 902 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
903 | return -1; |
904 | } | |
905 | do { | |
906 | e++; | |
0eb30aeb | 907 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
908 | llen = e - s; |
909 | if (*e == '(') { | |
910 | int nesting = 1; | |
911 | as = ++e; | |
912 | while (nesting) { | |
913 | switch (*e++) { | |
914 | case ')': | |
915 | if (--nesting == 0) | |
916 | alen = (e - 1) - as; | |
917 | break; | |
918 | case '(': | |
919 | ++nesting; | |
920 | break; | |
921 | case '\\': | |
922 | /* | |
923 | * It's a nul terminated string, not allowed | |
924 | * to \ the terminating null. Anything other | |
71200d45 | 925 | * character is passed over. |
14a5cf38 JH |
926 | */ |
927 | if (*e++) { | |
928 | break; | |
929 | } | |
2165bd23 | 930 | /* Fall through */ |
14a5cf38 JH |
931 | case '\0': |
932 | e--; | |
a2a5de95 NC |
933 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
934 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
935 | (int) (e - s), s); | |
14a5cf38 JH |
936 | return -1; |
937 | default: | |
938 | /* | |
71200d45 | 939 | * boring. |
14a5cf38 JH |
940 | */ |
941 | break; | |
942 | } | |
943 | } | |
944 | } | |
945 | if (e > s) { | |
46c461b5 | 946 | PerlIO_funcs * const layer = |
14a5cf38 JH |
947 | PerlIO_find_layer(aTHX_ s, llen, 1); |
948 | if (layer) { | |
a951d81d BL |
949 | SV *arg = NULL; |
950 | if (as) | |
951 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 952 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 953 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 954 | SvREFCNT_dec(arg); |
14a5cf38 JH |
955 | } |
956 | else { | |
a2a5de95 NC |
957 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
958 | (int) llen, s); | |
14a5cf38 JH |
959 | return -1; |
960 | } | |
961 | } | |
962 | s = e; | |
963 | } | |
964 | } | |
965 | } | |
966 | return 0; | |
1141d9f8 NIS |
967 | } |
968 | ||
dfebf958 | 969 | void |
fcf2db38 | 970 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 971 | { |
27da23d5 | 972 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 973 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 974 | tab = &PerlIO_crlf; |
846be114 | 975 | #else |
6ce75a77 | 976 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 977 | tab = &PerlIO_stdio; |
846be114 | 978 | #endif |
e17bc05a | 979 | DEBUG_i( PerlIO_debug("Pushing %s\n", tab->name) ); |
0987d6f3 | 980 | PerlIO_list_push(aTHX_ av, (PerlIO_funcs *)tab, &PL_sv_undef); |
dfebf958 NIS |
981 | } |
982 | ||
e3f3bf95 | 983 | SV * |
14a5cf38 | 984 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 985 | { |
14a5cf38 | 986 | return av->array[n].arg; |
e3f3bf95 NIS |
987 | } |
988 | ||
f3862f8b | 989 | PerlIO_funcs * |
14a5cf38 | 990 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 991 | { |
14a5cf38 | 992 | if (n >= 0 && n < av->cur) { |
e17bc05a TC |
993 | DEBUG_i( PerlIO_debug("Layer %" IVdf " is %s\n", n, |
994 | av->array[n].funcs->name) ); | |
14a5cf38 JH |
995 | return av->array[n].funcs; |
996 | } | |
997 | if (!def) | |
998 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
999 | return def; | |
e3f3bf95 NIS |
1000 | } |
1001 | ||
4ec2216f NIS |
1002 | IV |
1003 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1004 | { | |
8772537c AL |
1005 | PERL_UNUSED_ARG(mode); |
1006 | PERL_UNUSED_ARG(arg); | |
1007 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1008 | if (PerlIOValid(f)) { |
1009 | PerlIO_flush(f); | |
1010 | PerlIO_pop(aTHX_ f); | |
1011 | return 0; | |
1012 | } | |
1013 | return -1; | |
1014 | } | |
1015 | ||
27da23d5 | 1016 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1017 | sizeof(PerlIO_funcs), |
1018 | "pop", | |
1019 | 0, | |
1020 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1021 | PerlIOPop_pushed, | |
1022 | NULL, | |
c0888ace | 1023 | PerlIOBase_open, |
4ec2216f NIS |
1024 | NULL, |
1025 | NULL, | |
1026 | NULL, | |
1027 | NULL, | |
1028 | NULL, | |
1029 | NULL, | |
1030 | NULL, | |
1031 | NULL, | |
de009b76 AL |
1032 | NULL, |
1033 | NULL, | |
4ec2216f NIS |
1034 | NULL, /* flush */ |
1035 | NULL, /* fill */ | |
1036 | NULL, | |
1037 | NULL, | |
1038 | NULL, | |
1039 | NULL, | |
1040 | NULL, /* get_base */ | |
1041 | NULL, /* get_bufsiz */ | |
1042 | NULL, /* get_ptr */ | |
1043 | NULL, /* get_cnt */ | |
1044 | NULL, /* set_ptrcnt */ | |
1045 | }; | |
1046 | ||
fcf2db38 | 1047 | PerlIO_list_t * |
e3f3bf95 NIS |
1048 | PerlIO_default_layers(pTHX) |
1049 | { | |
3a1ee7e8 | 1050 | if (!PL_def_layerlist) { |
284167a5 | 1051 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1052 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1053 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1054 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1055 | #if defined(WIN32) |
27da23d5 | 1056 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1057 | #if 0 |
14a5cf38 | 1058 | osLayer = &PerlIO_win32; |
0c4128ad | 1059 | #endif |
2f8118af | 1060 | #endif |
27da23d5 JH |
1061 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1062 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1063 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1064 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1065 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1066 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1067 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
0987d6f3 TC |
1068 | PerlIO_list_push(aTHX_ PL_def_layerlist, (PerlIO_funcs *)osLayer, |
1069 | &PL_sv_undef); | |
14a5cf38 | 1070 | if (s) { |
3a1ee7e8 | 1071 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1072 | } |
1073 | else { | |
3a1ee7e8 | 1074 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1075 | } |
1141d9f8 | 1076 | } |
3a1ee7e8 NIS |
1077 | if (PL_def_layerlist->cur < 2) { |
1078 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1079 | } |
3a1ee7e8 | 1080 | return PL_def_layerlist; |
e3f3bf95 NIS |
1081 | } |
1082 | ||
0c4f7ff0 NIS |
1083 | void |
1084 | Perl_boot_core_PerlIO(pTHX) | |
1085 | { | |
1086 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1087 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1088 | __FILE__); | |
0c4f7ff0 | 1089 | #endif |
14a5cf38 | 1090 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1091 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1092 | } |
e3f3bf95 NIS |
1093 | |
1094 | PerlIO_funcs * | |
1095 | PerlIO_default_layer(pTHX_ I32 n) | |
1096 | { | |
46c461b5 | 1097 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1098 | if (n < 0) |
1099 | n += av->cur; | |
27da23d5 | 1100 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1101 | } |
1102 | ||
a999f61b NIS |
1103 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1104 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1105 | |
1106 | void | |
1141d9f8 | 1107 | PerlIO_stdstreams(pTHX) |
60382766 | 1108 | { |
a1ea730d | 1109 | if (!PL_perlio) { |
8995e67d | 1110 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1111 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1112 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1113 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1114 | } | |
60382766 NIS |
1115 | } |
1116 | ||
1117 | PerlIO * | |
27da23d5 | 1118 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1119 | { |
16865ff7 | 1120 | VERIFY_HEAD(f); |
2dc2558e | 1121 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1122 | Perl_croak( aTHX_ |
147e3846 | 1123 | "%s (%" UVuf ") does not match %s (%" UVuf ")", |
5cf96513 RB |
1124 | "PerlIO layer function table size", (UV)tab->fsize, |
1125 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1126 | } |
1127 | if (tab->size) { | |
b464bac0 | 1128 | PerlIOl *l; |
2dc2558e | 1129 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1130 | Perl_croak( aTHX_ |
147e3846 | 1131 | "%s (%" UVuf ") smaller than %s (%" UVuf ")", |
5cf96513 RB |
1132 | "PerlIO layer instance size", (UV)tab->size, |
1133 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1134 | } |
1135 | /* Real layer with a data area */ | |
002e75cf JH |
1136 | if (f) { |
1137 | char *temp; | |
1138 | Newxz(temp, tab->size, char); | |
1139 | l = (PerlIOl*)temp; | |
1140 | if (l) { | |
1141 | l->next = *f; | |
1142 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1143 | l->head = ((PerlIOl*)f)->head; |
002e75cf | 1144 | *f = l; |
e17bc05a TC |
1145 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", |
1146 | (void*)f, tab->name, | |
1147 | (mode) ? mode : "(Null)", (void*)arg) ); | |
002e75cf JH |
1148 | if (*l->tab->Pushed && |
1149 | (*l->tab->Pushed) | |
1150 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1151 | PerlIO_pop(aTHX_ f); | |
1152 | return NULL; | |
1153 | } | |
2dc2558e | 1154 | } |
002e75cf JH |
1155 | else |
1156 | return NULL; | |
2dc2558e NIS |
1157 | } |
1158 | } | |
1159 | else if (f) { | |
1160 | /* Pseudo-layer where push does its own stack adjust */ | |
e17bc05a TC |
1161 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1162 | (mode) ? mode : "(Null)", (void*)arg) ); | |
210e727c | 1163 | if (tab->Pushed && |
27da23d5 | 1164 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1165 | return NULL; |
14a5cf38 JH |
1166 | } |
1167 | } | |
1168 | return f; | |
60382766 NIS |
1169 | } |
1170 | ||
81fe74fb LT |
1171 | PerlIO * |
1172 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1173 | IV n, const char *mode, int fd, int imode, int perm, | |
1174 | PerlIO *old, int narg, SV **args) | |
1175 | { | |
1176 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1177 | if (tab && tab->Open) { | |
1178 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1179 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1180 | PerlIO_close(ret); |
1181 | return NULL; | |
1182 | } | |
1183 | return ret; | |
1184 | } | |
1185 | SETERRNO(EINVAL, LIB_INVARG); | |
1186 | return NULL; | |
1187 | } | |
1188 | ||
dfebf958 | 1189 | IV |
86e05cf2 NIS |
1190 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1191 | { | |
1192 | if (PerlIOValid(f)) { | |
1193 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1194 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1195 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1196 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1197 | } | |
1198 | else { | |
1199 | /* Not suitable - pop it */ | |
1200 | PerlIO_pop(aTHX_ f); | |
1201 | } | |
1202 | return 0; | |
1203 | } | |
1204 | return -1; | |
1205 | } | |
1206 | ||
1207 | IV | |
2dc2558e | 1208 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1209 | { |
8772537c AL |
1210 | PERL_UNUSED_ARG(mode); |
1211 | PERL_UNUSED_ARG(arg); | |
1212 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1213 | |
04892f78 | 1214 | if (PerlIOValid(f)) { |
86e05cf2 | 1215 | PerlIO *t; |
de009b76 | 1216 | const PerlIOl *l; |
14a5cf38 | 1217 | PerlIO_flush(f); |
86e05cf2 NIS |
1218 | /* |
1219 | * Strip all layers that are not suitable for a raw stream | |
1220 | */ | |
1221 | t = f; | |
1222 | while (t && (l = *t)) { | |
cc6623a8 | 1223 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1224 | /* Has a handler - normal case */ |
9d97e8b8 | 1225 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1226 | if (*t == l) { |
1227 | /* Layer still there - move down a layer */ | |
1228 | t = PerlIONext(t); | |
1229 | } | |
1230 | } | |
1231 | else { | |
1232 | return -1; | |
1233 | } | |
14a5cf38 JH |
1234 | } |
1235 | else { | |
86e05cf2 NIS |
1236 | /* No handler - pop it */ |
1237 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1238 | } |
1239 | } | |
86e05cf2 | 1240 | if (PerlIOValid(f)) { |
e17bc05a TC |
1241 | DEBUG_i( PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1242 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)") ); | |
86e05cf2 NIS |
1243 | return 0; |
1244 | } | |
14a5cf38 JH |
1245 | } |
1246 | return -1; | |
dfebf958 NIS |
1247 | } |
1248 | ||
ac27b0f5 | 1249 | int |
14a5cf38 | 1250 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1251 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1252 | { |
14a5cf38 JH |
1253 | int code = 0; |
1254 | while (n < max) { | |
8772537c | 1255 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1256 | if (tab) { |
1257 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1258 | code = -1; | |
1259 | break; | |
1260 | } | |
1261 | } | |
1262 | n++; | |
1263 | } | |
1264 | return code; | |
e3f3bf95 NIS |
1265 | } |
1266 | ||
1267 | int | |
ac27b0f5 NIS |
1268 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1269 | { | |
14a5cf38 | 1270 | int code = 0; |
da0fccaa DG |
1271 | ENTER; |
1272 | save_scalar(PL_errgv); | |
53f1b6d2 | 1273 | if (f && names) { |
8772537c | 1274 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1275 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1276 | if (code == 0) { | |
d9dac8cd | 1277 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1278 | } |
3a1ee7e8 | 1279 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1280 | } |
da0fccaa | 1281 | LEAVE; |
14a5cf38 | 1282 | return code; |
ac27b0f5 NIS |
1283 | } |
1284 | ||
f3862f8b | 1285 | |
60382766 | 1286 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1287 | /* |
71200d45 | 1288 | * Given the abstraction above the public API functions |
14a5cf38 | 1289 | */ |
60382766 NIS |
1290 | |
1291 | int | |
f5b9d040 | 1292 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1293 | { |
5347602a DM |
1294 | PERL_UNUSED_ARG(iotype); |
1295 | PERL_UNUSED_ARG(mode); | |
1296 | ||
e17bc05a TC |
1297 | DEBUG_i( |
1298 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, | |
1299 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? | |
1300 | PerlIOBase(f)->tab->name : "(Null)", | |
1301 | iotype, mode, (names) ? names : "(Null)") ); | |
68b5363f | 1302 | |
03c0554d NIS |
1303 | if (names) { |
1304 | /* Do not flush etc. if (e.g.) switching encodings. | |
1305 | if a pushed layer knows it needs to flush lower layers | |
1306 | (for example :unix which is never going to call them) | |
1307 | it can do the flush when it is pushed. | |
1308 | */ | |
8298454c | 1309 | return cBOOL(PerlIO_apply_layers(aTHX_ f, NULL, names) == 0); |
03c0554d NIS |
1310 | } |
1311 | else { | |
86e05cf2 | 1312 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1313 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1314 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1315 | O_BINARY so we can look for it in mode. | |
1316 | */ | |
1317 | if (!(mode & O_BINARY)) { | |
1318 | /* Text mode */ | |
86e05cf2 NIS |
1319 | /* FIXME?: Looking down the layer stack seems wrong, |
1320 | but is a way of reaching past (say) an encoding layer | |
1321 | to flip CRLF-ness of the layer(s) below | |
1322 | */ | |
03c0554d NIS |
1323 | while (*f) { |
1324 | /* Perhaps we should turn on bottom-most aware layer | |
1325 | e.g. Ilya's idea that UNIX TTY could serve | |
1326 | */ | |
cc6623a8 DM |
1327 | if (PerlIOBase(f)->tab && |
1328 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1329 | { | |
03c0554d NIS |
1330 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1331 | /* Not in text mode - flush any pending stuff and flip it */ | |
1332 | PerlIO_flush(f); | |
1333 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1334 | } | |
1335 | /* Only need to turn it on in one layer so we are done */ | |
1336 | return TRUE; | |
ed53a2bb | 1337 | } |
03c0554d | 1338 | f = PerlIONext(f); |
14a5cf38 | 1339 | } |
03c0554d NIS |
1340 | /* Not finding a CRLF aware layer presumably means we are binary |
1341 | which is not what was requested - so we failed | |
1342 | We _could_ push :crlf layer but so could caller | |
1343 | */ | |
1344 | return FALSE; | |
14a5cf38 | 1345 | } |
6ce75a77 | 1346 | #endif |
86e05cf2 NIS |
1347 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1348 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1349 | */ |
8298454c | 1350 | return cBOOL(PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL)); |
14a5cf38 | 1351 | } |
f5b9d040 NIS |
1352 | } |
1353 | ||
f5b9d040 | 1354 | int |
e87a358a | 1355 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1356 | { |
37725cdc | 1357 | if (PerlIOValid(f)) { |
46c461b5 | 1358 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1359 | if (tab && tab->Close) |
1360 | return (*tab->Close)(aTHX_ f); | |
1361 | else | |
1362 | return PerlIOBase_close(aTHX_ f); | |
1363 | } | |
14a5cf38 | 1364 | else { |
93189314 | 1365 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1366 | return -1; |
1367 | } | |
76ced9ad NIS |
1368 | } |
1369 | ||
b931b1d9 | 1370 | int |
e87a358a | 1371 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1372 | { |
de009b76 | 1373 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1374 | while (PerlIOValid(f)) { |
1375 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1376 | if (PerlIO_lockcnt(f)) |
1377 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1378 | f = PerlIONext(f); | |
f6c77cf1 | 1379 | } |
14a5cf38 | 1380 | return code; |
b931b1d9 NIS |
1381 | } |
1382 | ||
b931b1d9 | 1383 | int |
e87a358a | 1384 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1385 | { |
20b7effb | 1386 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1387 | } |
1388 | ||
1141d9f8 | 1389 | |
fcf2db38 | 1390 | static PerlIO_funcs * |
2edd7e44 NIS |
1391 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1392 | { | |
14a5cf38 | 1393 | /* |
71200d45 | 1394 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1395 | */ |
526fd1b4 | 1396 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1397 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1398 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1399 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1400 | if (!f) |
dcbac5bb | 1401 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1402 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1403 | return f; |
1404 | } | |
14a5cf38 JH |
1405 | |
1406 | /* | |
71200d45 | 1407 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1408 | */ |
1409 | switch (SvTYPE(sv)) { | |
1410 | case SVt_PVAV: | |
6a245ed1 | 1411 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1412 | case SVt_PVHV: |
6a245ed1 | 1413 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1414 | case SVt_PVCV: |
6a245ed1 | 1415 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1416 | case SVt_PVGV: |
6a245ed1 | 1417 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1418 | default: |
1419 | return NULL; | |
14a5cf38 | 1420 | } |
2edd7e44 NIS |
1421 | } |
1422 | ||
fcf2db38 | 1423 | PerlIO_list_t * |
14a5cf38 JH |
1424 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1425 | const char *mode, int narg, SV **args) | |
1426 | { | |
1427 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); | |
1428 | int incdef = 1; | |
a1ea730d | 1429 | if (!PL_perlio) |
14a5cf38 JH |
1430 | PerlIO_stdstreams(aTHX); |
1431 | if (narg) { | |
dcda55fc | 1432 | SV * const arg = *args; |
14a5cf38 | 1433 | /* |
71200d45 NIS |
1434 | * If it is a reference but not an object see if we have a handler |
1435 | * for it | |
14a5cf38 | 1436 | */ |
4e0ef342 | 1437 | if (SvROK(arg) && !SvOBJECT(SvRV(arg))) { |
46c461b5 | 1438 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1439 | if (handler) { |
3a1ee7e8 NIS |
1440 | def = PerlIO_list_alloc(aTHX); |
1441 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1442 | incdef = 0; |
1443 | } | |
1444 | /* | |
e934609f | 1445 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1446 | * something sensible else we will just stringfy and open |
71200d45 | 1447 | * resulting string. |
14a5cf38 JH |
1448 | */ |
1449 | } | |
1450 | } | |
9fe371da | 1451 | if (!layers || !*layers) |
11bcd5da | 1452 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1453 | if (layers && *layers) { |
1454 | PerlIO_list_t *av; | |
1455 | if (incdef) { | |
a951d81d | 1456 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1457 | } |
1458 | else { | |
1459 | av = def; | |
1460 | } | |
0cff2cf3 NIS |
1461 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1462 | return av; | |
1463 | } | |
1464 | else { | |
1465 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1466 | return NULL; |
0cff2cf3 | 1467 | } |
14a5cf38 JH |
1468 | } |
1469 | else { | |
1470 | if (incdef) | |
1471 | def->refcnt++; | |
1472 | return def; | |
1473 | } | |
ee518936 NIS |
1474 | } |
1475 | ||
1476 | PerlIO * | |
14a5cf38 JH |
1477 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1478 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1479 | { | |
1480 | if (!f && narg == 1 && *args == &PL_sv_undef) { | |
1481 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1482 | if (!layers || !*layers) |
11bcd5da | 1483 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1484 | if (layers && *layers) |
1485 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1486 | } | |
1487 | } | |
1488 | else { | |
de009b76 | 1489 | PerlIO_list_t *layera; |
14a5cf38 JH |
1490 | IV n; |
1491 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1492 | if (PerlIOValid(f)) { |
14a5cf38 | 1493 | /* |
71200d45 NIS |
1494 | * This is "reopen" - it is not tested as perl does not use it |
1495 | * yet | |
14a5cf38 JH |
1496 | */ |
1497 | PerlIOl *l = *f; | |
3a1ee7e8 | 1498 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1499 | while (l) { |
a951d81d | 1500 | SV *arg = NULL; |
cc6623a8 | 1501 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1502 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1503 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1504 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1505 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1506 | l = *PerlIONext(&l); |
1507 | } | |
1508 | } | |
1509 | else { | |
1510 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1511 | if (!layera) { |
1512 | return NULL; | |
1513 | } | |
14a5cf38 JH |
1514 | } |
1515 | /* | |
71200d45 | 1516 | * Start at "top" of layer stack |
14a5cf38 JH |
1517 | */ |
1518 | n = layera->cur - 1; | |
1519 | while (n >= 0) { | |
46c461b5 | 1520 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1521 | if (t && t->Open) { |
1522 | tab = t; | |
1523 | break; | |
1524 | } | |
1525 | n--; | |
1526 | } | |
1527 | if (tab) { | |
1528 | /* | |
71200d45 | 1529 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1530 | */ |
7cf31beb | 1531 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1532 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1533 | } |
e17bc05a TC |
1534 | DEBUG_i( PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
1535 | tab->name, layers ? layers : "(Null)", mode, fd, | |
1536 | imode, perm, (void*)f, narg, (void*)args) ); | |
210e727c JH |
1537 | if (tab->Open) |
1538 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1539 | f, narg, args); | |
1540 | else { | |
1541 | SETERRNO(EINVAL, LIB_INVARG); | |
1542 | f = NULL; | |
1543 | } | |
14a5cf38 JH |
1544 | if (f) { |
1545 | if (n + 1 < layera->cur) { | |
1546 | /* | |
1547 | * More layers above the one that we used to open - | |
71200d45 | 1548 | * apply them now |
14a5cf38 | 1549 | */ |
d9dac8cd NIS |
1550 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1551 | /* If pushing layers fails close the file */ | |
1552 | PerlIO_close(f); | |
14a5cf38 JH |
1553 | f = NULL; |
1554 | } | |
1555 | } | |
1556 | } | |
1557 | } | |
3a1ee7e8 | 1558 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1559 | } |
1560 | return f; | |
ee518936 | 1561 | } |
b931b1d9 NIS |
1562 | |
1563 | ||
9e353e3b | 1564 | SSize_t |
e87a358a | 1565 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1566 | { |
7918f24d NC |
1567 | PERL_ARGS_ASSERT_PERLIO_READ; |
1568 | ||
b32dd47e | 1569 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1570 | } |
1571 | ||
313ca112 | 1572 | SSize_t |
e87a358a | 1573 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1574 | { |
7918f24d NC |
1575 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1576 | ||
b32dd47e | 1577 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1578 | } |
1579 | ||
9e353e3b | 1580 | SSize_t |
e87a358a | 1581 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1582 | { |
7918f24d NC |
1583 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1584 | ||
b32dd47e | 1585 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1586 | } |
1587 | ||
6f9d8c32 | 1588 | int |
e87a358a | 1589 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1590 | { |
b32dd47e | 1591 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1592 | } |
1593 | ||
9e353e3b | 1594 | Off_t |
e87a358a | 1595 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1596 | { |
b32dd47e | 1597 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1598 | } |
1599 | ||
6f9d8c32 | 1600 | int |
e87a358a | 1601 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1602 | { |
14a5cf38 JH |
1603 | if (f) { |
1604 | if (*f) { | |
de009b76 | 1605 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1606 | |
1607 | if (tab && tab->Flush) | |
f62ce20a | 1608 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1609 | else |
1610 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1611 | } |
1612 | else { | |
e17bc05a | 1613 | DEBUG_i( PerlIO_debug("Cannot flush f=%p\n", (void*)f) ); |
93189314 | 1614 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1615 | return -1; |
1616 | } | |
1617 | } | |
1618 | else { | |
1619 | /* | |
1620 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1621 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1622 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1623 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1624 | * decisions? --jhi |
14a5cf38 | 1625 | */ |
303f2dc3 DM |
1626 | PerlIOl **table = &PL_perlio; |
1627 | PerlIOl *ff; | |
14a5cf38 | 1628 | int code = 0; |
303f2dc3 | 1629 | while ((ff = *table)) { |
14a5cf38 | 1630 | int i; |
303f2dc3 | 1631 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1632 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1633 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1634 | code = -1; |
303f2dc3 | 1635 | ff++; |
14a5cf38 JH |
1636 | } |
1637 | } | |
1638 | return code; | |
1639 | } | |
760ac839 LW |
1640 | } |
1641 | ||
a9c883f6 | 1642 | void |
f62ce20a | 1643 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1644 | { |
303f2dc3 DM |
1645 | PerlIOl **table = &PL_perlio; |
1646 | PerlIOl *f; | |
14a5cf38 JH |
1647 | while ((f = *table)) { |
1648 | int i; | |
303f2dc3 | 1649 | table = (PerlIOl **) (f++); |
14a5cf38 | 1650 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1651 | if (f->next |
1652 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1653 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1654 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1655 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1656 | f++; |
1657 | } | |
a9c883f6 | 1658 | } |
a9c883f6 NIS |
1659 | } |
1660 | ||
06da4f11 | 1661 | int |
e87a358a | 1662 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1663 | { |
b32dd47e | 1664 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1665 | } |
1666 | ||
f3862f8b NIS |
1667 | int |
1668 | PerlIO_isutf8(PerlIO *f) | |
1669 | { | |
1b7a0411 JH |
1670 | if (PerlIOValid(f)) |
1671 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1672 | else | |
1673 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1674 | |
1b7a0411 | 1675 | return -1; |
f3862f8b NIS |
1676 | } |
1677 | ||
6f9d8c32 | 1678 | int |
e87a358a | 1679 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1680 | { |
b32dd47e | 1681 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1682 | } |
1683 | ||
9e353e3b | 1684 | int |
e87a358a | 1685 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1686 | { |
b32dd47e | 1687 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1688 | } |
1689 | ||
9e353e3b | 1690 | void |
e87a358a | 1691 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1692 | { |
b32dd47e | 1693 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1694 | } |
1695 | ||
9e353e3b | 1696 | void |
e87a358a | 1697 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1698 | { |
b32dd47e | 1699 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1700 | } |
1701 | ||
9e353e3b NIS |
1702 | int |
1703 | PerlIO_has_base(PerlIO *f) | |
1704 | { | |
1b7a0411 | 1705 | if (PerlIOValid(f)) { |
46c461b5 | 1706 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1707 | |
1708 | if (tab) | |
1709 | return (tab->Get_base != NULL); | |
1b7a0411 | 1710 | } |
1b7a0411 JH |
1711 | |
1712 | return 0; | |
760ac839 LW |
1713 | } |
1714 | ||
9e353e3b NIS |
1715 | int |
1716 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1717 | { |
d7dfc388 SK |
1718 | if (PerlIOValid(f)) { |
1719 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1720 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1721 | |
d7dfc388 SK |
1722 | if (tab) |
1723 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1724 | } |
14a5cf38 | 1725 | } |
1b7a0411 | 1726 | |
14a5cf38 | 1727 | return 0; |
9e353e3b NIS |
1728 | } |
1729 | ||
9e353e3b NIS |
1730 | int |
1731 | PerlIO_has_cntptr(PerlIO *f) | |
1732 | { | |
04892f78 | 1733 | if (PerlIOValid(f)) { |
46c461b5 | 1734 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1735 | |
1736 | if (tab) | |
1737 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1738 | } |
1b7a0411 | 1739 | |
14a5cf38 | 1740 | return 0; |
9e353e3b NIS |
1741 | } |
1742 | ||
9e353e3b NIS |
1743 | int |
1744 | PerlIO_canset_cnt(PerlIO *f) | |
1745 | { | |
04892f78 | 1746 | if (PerlIOValid(f)) { |
46c461b5 | 1747 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1748 | |
1749 | if (tab) | |
1750 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1751 | } |
1b7a0411 | 1752 | |
14a5cf38 | 1753 | return 0; |
760ac839 LW |
1754 | } |
1755 | ||
888911fc | 1756 | STDCHAR * |
e87a358a | 1757 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1758 | { |
b32dd47e | 1759 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1760 | } |
1761 | ||
b66f3475 | 1762 | SSize_t |
e87a358a | 1763 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1764 | { |
b66f3475 | 1765 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1766 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1767 | } |
1768 | ||
9e353e3b | 1769 | STDCHAR * |
e87a358a | 1770 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1771 | { |
b32dd47e | 1772 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1773 | } |
1774 | ||
b66f3475 | 1775 | SSize_t |
e87a358a | 1776 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1777 | { |
b32dd47e | 1778 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1779 | } |
1780 | ||
9e353e3b | 1781 | void |
b66f3475 | 1782 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1783 | { |
b32dd47e | 1784 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1785 | } |
1786 | ||
9e353e3b | 1787 | void |
b66f3475 | 1788 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1789 | { |
b32dd47e | 1790 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1791 | } |
1792 | ||
4ec2216f | 1793 | |
9e353e3b | 1794 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1795 | /* |
71200d45 | 1796 | * utf8 and raw dummy layers |
14a5cf38 | 1797 | */ |
dfebf958 | 1798 | |
26fb694e | 1799 | IV |
2dc2558e | 1800 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1801 | { |
96a5add6 | 1802 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1803 | PERL_UNUSED_ARG(mode); |
1804 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1805 | if (PerlIOValid(f)) { |
cc6623a8 | 1806 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1807 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1808 | else | |
1809 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1810 | return 0; | |
1811 | } | |
1812 | return -1; | |
26fb694e NIS |
1813 | } |
1814 | ||
27da23d5 | 1815 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1816 | sizeof(PerlIO_funcs), |
14a5cf38 | 1817 | "utf8", |
2dc2558e | 1818 | 0, |
a778d1f5 | 1819 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1820 | PerlIOUtf8_pushed, |
1821 | NULL, | |
c0888ace | 1822 | PerlIOBase_open, |
14a5cf38 JH |
1823 | NULL, |
1824 | NULL, | |
1825 | NULL, | |
1826 | NULL, | |
1827 | NULL, | |
1828 | NULL, | |
1829 | NULL, | |
1830 | NULL, | |
de009b76 AL |
1831 | NULL, |
1832 | NULL, | |
22569500 NIS |
1833 | NULL, /* flush */ |
1834 | NULL, /* fill */ | |
14a5cf38 JH |
1835 | NULL, |
1836 | NULL, | |
1837 | NULL, | |
1838 | NULL, | |
22569500 NIS |
1839 | NULL, /* get_base */ |
1840 | NULL, /* get_bufsiz */ | |
1841 | NULL, /* get_ptr */ | |
1842 | NULL, /* get_cnt */ | |
1843 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1844 | }; |
1845 | ||
27da23d5 | 1846 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1847 | sizeof(PerlIO_funcs), |
14a5cf38 | 1848 | "bytes", |
2dc2558e | 1849 | 0, |
a778d1f5 | 1850 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1851 | PerlIOUtf8_pushed, |
1852 | NULL, | |
c0888ace | 1853 | PerlIOBase_open, |
14a5cf38 JH |
1854 | NULL, |
1855 | NULL, | |
1856 | NULL, | |
1857 | NULL, | |
1858 | NULL, | |
1859 | NULL, | |
1860 | NULL, | |
1861 | NULL, | |
de009b76 AL |
1862 | NULL, |
1863 | NULL, | |
22569500 NIS |
1864 | NULL, /* flush */ |
1865 | NULL, /* fill */ | |
14a5cf38 JH |
1866 | NULL, |
1867 | NULL, | |
1868 | NULL, | |
1869 | NULL, | |
22569500 NIS |
1870 | NULL, /* get_base */ |
1871 | NULL, /* get_bufsiz */ | |
1872 | NULL, /* get_ptr */ | |
1873 | NULL, /* get_cnt */ | |
1874 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1875 | }; |
1876 | ||
27da23d5 | 1877 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1878 | sizeof(PerlIO_funcs), |
14a5cf38 | 1879 | "raw", |
2dc2558e | 1880 | 0, |
14a5cf38 JH |
1881 | PERLIO_K_DUMMY, |
1882 | PerlIORaw_pushed, | |
1883 | PerlIOBase_popped, | |
ecfd0649 | 1884 | PerlIOBase_open, |
14a5cf38 JH |
1885 | NULL, |
1886 | NULL, | |
1887 | NULL, | |
1888 | NULL, | |
1889 | NULL, | |
1890 | NULL, | |
1891 | NULL, | |
1892 | NULL, | |
de009b76 AL |
1893 | NULL, |
1894 | NULL, | |
22569500 NIS |
1895 | NULL, /* flush */ |
1896 | NULL, /* fill */ | |
14a5cf38 JH |
1897 | NULL, |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
22569500 NIS |
1901 | NULL, /* get_base */ |
1902 | NULL, /* get_bufsiz */ | |
1903 | NULL, /* get_ptr */ | |
1904 | NULL, /* get_cnt */ | |
1905 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1906 | }; |
1907 | /*--------------------------------------------------------------------------------------*/ | |
1908 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1909 | /* |
71200d45 | 1910 | * "Methods" of the "base class" |
14a5cf38 | 1911 | */ |
9e353e3b NIS |
1912 | |
1913 | IV | |
f62ce20a | 1914 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1915 | { |
04892f78 | 1916 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1917 | } |
1918 | ||
f5b9d040 | 1919 | char * |
81428673 | 1920 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1921 | { |
1922 | char *s = buf; | |
81428673 | 1923 | if (PerlIOValid(f)) { |
de009b76 | 1924 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1925 | if (flags & PERLIO_F_APPEND) { |
1926 | *s++ = 'a'; | |
1927 | if (flags & PERLIO_F_CANREAD) { | |
1928 | *s++ = '+'; | |
1929 | } | |
14a5cf38 | 1930 | } |
81428673 NIS |
1931 | else if (flags & PERLIO_F_CANREAD) { |
1932 | *s++ = 'r'; | |
1933 | if (flags & PERLIO_F_CANWRITE) | |
1934 | *s++ = '+'; | |
1935 | } | |
1936 | else if (flags & PERLIO_F_CANWRITE) { | |
1937 | *s++ = 'w'; | |
1938 | if (flags & PERLIO_F_CANREAD) { | |
1939 | *s++ = '+'; | |
1940 | } | |
14a5cf38 | 1941 | } |
35990314 | 1942 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1943 | if (!(flags & PERLIO_F_CRLF)) |
1944 | *s++ = 'b'; | |
5f1a76d0 | 1945 | #endif |
81428673 | 1946 | } |
14a5cf38 JH |
1947 | *s = '\0'; |
1948 | return buf; | |
f5b9d040 NIS |
1949 | } |
1950 | ||
81428673 | 1951 | |
76ced9ad | 1952 | IV |
2dc2558e | 1953 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1954 | { |
de009b76 | 1955 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1956 | PERL_UNUSED_CONTEXT; |
8772537c | 1957 | PERL_UNUSED_ARG(arg); |
de009b76 | 1958 | |
14a5cf38 JH |
1959 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1960 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 1961 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
1962 | l->flags |= PERLIO_F_FASTGETS; |
1963 | if (mode) { | |
3b6c1aba | 1964 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
1965 | mode++; |
1966 | switch (*mode++) { | |
1967 | case 'r': | |
1968 | l->flags |= PERLIO_F_CANREAD; | |
1969 | break; | |
1970 | case 'a': | |
1971 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
1972 | break; | |
1973 | case 'w': | |
1974 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
1975 | break; | |
1976 | default: | |
93189314 | 1977 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1978 | return -1; |
1979 | } | |
49fc4906 YK |
1980 | #ifdef EBCDIC |
1981 | { | |
1982 | /* The mode variable contains one positional parameter followed by | |
1983 | * optional keyword parameters. The positional parameters must be | |
1984 | * passed as lowercase characters. The keyword parameters can be | |
1985 | * passed in mixed case. They must be separated by commas. Only one | |
1986 | * instance of a keyword can be specified. */ | |
1987 | int comma = 0; | |
1988 | while (*mode) { | |
1989 | switch (*mode++) { | |
1990 | case '+': | |
1991 | if(!comma) | |
1992 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
1993 | break; | |
1994 | case 'b': | |
1995 | if(!comma) | |
1996 | l->flags &= ~PERLIO_F_CRLF; | |
1997 | break; | |
1998 | case 't': | |
1999 | if(!comma) | |
2000 | l->flags |= PERLIO_F_CRLF; | |
2001 | break; | |
2002 | case ',': | |
2003 | comma = 1; | |
2004 | break; | |
2005 | default: | |
2006 | break; | |
2007 | } | |
2008 | } | |
2009 | } | |
2010 | #else | |
14a5cf38 JH |
2011 | while (*mode) { |
2012 | switch (*mode++) { | |
2013 | case '+': | |
2014 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2015 | break; | |
2016 | case 'b': | |
2017 | l->flags &= ~PERLIO_F_CRLF; | |
2018 | break; | |
2019 | case 't': | |
2020 | l->flags |= PERLIO_F_CRLF; | |
2021 | break; | |
2022 | default: | |
93189314 | 2023 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2024 | return -1; |
2025 | } | |
2026 | } | |
49fc4906 | 2027 | #endif |
14a5cf38 JH |
2028 | } |
2029 | else { | |
2030 | if (l->next) { | |
2031 | l->flags |= l->next->flags & | |
2032 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2033 | PERLIO_F_APPEND); | |
2034 | } | |
2035 | } | |
5e2ab84b | 2036 | #if 0 |
e17bc05a | 2037 | DEBUG_i( |
14a5cf38 | 2038 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2039 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2040 | l->flags, PerlIO_modestr(f, temp)); |
e17bc05a | 2041 | ); |
5e2ab84b | 2042 | #endif |
14a5cf38 | 2043 | return 0; |
76ced9ad NIS |
2044 | } |
2045 | ||
2046 | IV | |
f62ce20a | 2047 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2048 | { |
96a5add6 | 2049 | PERL_UNUSED_CONTEXT; |
8772537c | 2050 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2051 | return 0; |
760ac839 LW |
2052 | } |
2053 | ||
9e353e3b | 2054 | SSize_t |
f62ce20a | 2055 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2056 | { |
14a5cf38 | 2057 | /* |
71200d45 | 2058 | * Save the position as current head considers it |
14a5cf38 | 2059 | */ |
de009b76 | 2060 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2061 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2062 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2063 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2064 | } |
2065 | ||
f6c77cf1 | 2066 | SSize_t |
f62ce20a | 2067 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2068 | { |
14a5cf38 JH |
2069 | STDCHAR *buf = (STDCHAR *) vbuf; |
2070 | if (f) { | |
263df5f1 JH |
2071 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2072 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2073 | SETERRNO(EBADF, SS_IVCHAN); | |
0ea86a10 | 2074 | PerlIO_save_errno(f); |
263df5f1 JH |
2075 | return 0; |
2076 | } | |
14a5cf38 | 2077 | while (count > 0) { |
93c2c2ec IZ |
2078 | get_cnt: |
2079 | { | |
14a5cf38 JH |
2080 | SSize_t avail = PerlIO_get_cnt(f); |
2081 | SSize_t take = 0; | |
2082 | if (avail > 0) | |
94e529cc | 2083 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2084 | if (take > 0) { |
2085 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2086 | Copy(ptr, buf, take, STDCHAR); | |
2087 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2088 | count -= take; | |
2089 | buf += take; | |
93c2c2ec IZ |
2090 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2091 | goto get_cnt; | |
14a5cf38 JH |
2092 | } |
2093 | if (count > 0 && avail <= 0) { | |
2094 | if (PerlIO_fill(f) != 0) | |
2095 | break; | |
2096 | } | |
93c2c2ec | 2097 | } |
14a5cf38 JH |
2098 | } |
2099 | return (buf - (STDCHAR *) vbuf); | |
2100 | } | |
f6c77cf1 | 2101 | return 0; |
f6c77cf1 NIS |
2102 | } |
2103 | ||
9e353e3b | 2104 | IV |
f62ce20a | 2105 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2106 | { |
96a5add6 | 2107 | PERL_UNUSED_CONTEXT; |
8772537c | 2108 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2109 | return 0; |
9e353e3b NIS |
2110 | } |
2111 | ||
2112 | IV | |
f62ce20a | 2113 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2114 | { |
96a5add6 | 2115 | PERL_UNUSED_CONTEXT; |
8772537c | 2116 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2117 | return -1; |
06da4f11 NIS |
2118 | } |
2119 | ||
2120 | IV | |
f62ce20a | 2121 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2122 | { |
37725cdc NIS |
2123 | IV code = -1; |
2124 | if (PerlIOValid(f)) { | |
2125 | PerlIO *n = PerlIONext(f); | |
2126 | code = PerlIO_flush(f); | |
2127 | PerlIOBase(f)->flags &= | |
2128 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2129 | while (PerlIOValid(n)) { | |
de009b76 | 2130 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2131 | if (tab && tab->Close) { |
2132 | if ((*tab->Close)(aTHX_ n) != 0) | |
2133 | code = -1; | |
2134 | break; | |
2135 | } | |
2136 | else { | |
2137 | PerlIOBase(n)->flags &= | |
2138 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2139 | } | |
2140 | n = PerlIONext(n); | |
2141 | } | |
2142 | } | |
2143 | else { | |
2144 | SETERRNO(EBADF, SS_IVCHAN); | |
2145 | } | |
14a5cf38 | 2146 | return code; |
9e353e3b NIS |
2147 | } |
2148 | ||
2149 | IV | |
f62ce20a | 2150 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2151 | { |
96a5add6 | 2152 | PERL_UNUSED_CONTEXT; |
04892f78 | 2153 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2154 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2155 | } | |
2156 | return 1; | |
9e353e3b NIS |
2157 | } |
2158 | ||
2159 | IV | |
f62ce20a | 2160 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2161 | { |
96a5add6 | 2162 | PERL_UNUSED_CONTEXT; |
04892f78 | 2163 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2164 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2165 | } | |
2166 | return 1; | |
9e353e3b NIS |
2167 | } |
2168 | ||
2169 | void | |
f62ce20a | 2170 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2171 | { |
04892f78 | 2172 | if (PerlIOValid(f)) { |
dcda55fc | 2173 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2174 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2175 | if (PerlIOValid(n)) |
14a5cf38 JH |
2176 | PerlIO_clearerr(n); |
2177 | } | |
9e353e3b NIS |
2178 | } |
2179 | ||
2180 | void | |
f62ce20a | 2181 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2182 | { |
96a5add6 | 2183 | PERL_UNUSED_CONTEXT; |
04892f78 | 2184 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2185 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2186 | } | |
9e353e3b NIS |
2187 | } |
2188 | ||
93a8090d NIS |
2189 | SV * |
2190 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2191 | { | |
2192 | if (!arg) | |
a0714e2c | 2193 | return NULL; |
24d147a6 | 2194 | #ifdef USE_ITHREADS |
93a8090d | 2195 | if (param) { |
a951d81d BL |
2196 | arg = sv_dup(arg, param); |
2197 | SvREFCNT_inc_simple_void_NN(arg); | |
2198 | return arg; | |
93a8090d NIS |
2199 | } |
2200 | else { | |
2201 | return newSVsv(arg); | |
2202 | } | |
2203 | #else | |
1b6737cc | 2204 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2205 | return newSVsv(arg); |
2206 | #endif | |
2207 | } | |
2208 | ||
2209 | PerlIO * | |
ecdeb87c | 2210 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2211 | { |
1b6737cc | 2212 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2213 | if (PerlIOValid(nexto)) { |
de009b76 | 2214 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2215 | if (tab && tab->Dup) |
2216 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2217 | else | |
2218 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2219 | } |
2220 | if (f) { | |
dcda55fc | 2221 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2222 | SV *arg = NULL; |
93a8090d | 2223 | char buf[8]; |
316ebaf2 | 2224 | assert(self); |
e17bc05a TC |
2225 | DEBUG_i(PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2226 | self->name, | |
2227 | (void*)f, (void*)o, (void*)param) ); | |
27e6dabe JH |
2228 | if (self->Getarg) |
2229 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2230 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2231 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2232 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2233 | SvREFCNT_dec(arg); |
93a8090d NIS |
2234 | } |
2235 | return f; | |
2236 | } | |
2237 | ||
27da23d5 | 2238 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2239 | |
8b84d7dd | 2240 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 | 2241 | static void |
ff25d7bc JH |
2242 | S_more_refcounted_fds(pTHX_ const int new_fd) |
2243 | PERL_TSA_REQUIRES(PL_perlio_mutex) | |
2244 | { | |
7a89be66 | 2245 | dVAR; |
22c96fc1 | 2246 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2247 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2248 | int *new_array; |
2249 | ||
dd791c72 JH |
2250 | #ifndef PERL_IMPLICIT_SYS |
2251 | PERL_UNUSED_CONTEXT; | |
2252 | #endif | |
2253 | ||
e17bc05a TC |
2254 | DEBUG_i( PerlIO_debug("More fds - old=%d, need %d, new=%d\n", |
2255 | old_max, new_fd, new_max) ); | |
22c96fc1 NC |
2256 | |
2257 | if (new_fd < old_max) { | |
2258 | return; | |
2259 | } | |
2260 | ||
f4ae5be6 NC |
2261 | assert (new_max > new_fd); |
2262 | ||
eae082a0 JH |
2263 | /* Use plain realloc() since we need this memory to be really |
2264 | * global and visible to all the interpreters and/or threads. */ | |
2265 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2266 | |
2267 | if (!new_array) { | |
6cb8cb21 | 2268 | MUTEX_UNLOCK(&PL_perlio_mutex); |
4cbe3a7d | 2269 | croak_no_mem(); |
22c96fc1 NC |
2270 | } |
2271 | ||
2272 | PL_perlio_fd_refcnt_size = new_max; | |
2273 | PL_perlio_fd_refcnt = new_array; | |
2274 | ||
e17bc05a TC |
2275 | DEBUG_i( PerlIO_debug("Zeroing %p, %d\n", |
2276 | (void*)(new_array + old_max), | |
2277 | new_max - old_max) ); | |
22c96fc1 NC |
2278 | |
2279 | Zero(new_array + old_max, new_max - old_max, int); | |
2280 | } | |
2281 | ||
2282 | ||
93a8090d NIS |
2283 | void |
2284 | PerlIO_init(pTHX) | |
2285 | { | |
8b84d7dd | 2286 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2287 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2288 | } |
2289 | ||
168d5872 NIS |
2290 | void |
2291 | PerlIOUnix_refcnt_inc(int fd) | |
2292 | { | |
27da23d5 | 2293 | dTHX; |
22c96fc1 | 2294 | if (fd >= 0) { |
97aff369 | 2295 | dVAR; |
22c96fc1 | 2296 | |
6cb8cb21 | 2297 | MUTEX_LOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2298 | if (fd >= PL_perlio_fd_refcnt_size) |
2299 | S_more_refcounted_fds(aTHX_ fd); | |
2300 | ||
27da23d5 | 2301 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2302 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2303 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2304 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2305 | fd, PL_perlio_fd_refcnt[fd]); | |
2306 | } | |
e17bc05a TC |
2307 | DEBUG_i( PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", |
2308 | fd, PL_perlio_fd_refcnt[fd]) ); | |
22c96fc1 | 2309 | |
6cb8cb21 | 2310 | MUTEX_UNLOCK(&PL_perlio_mutex); |
8b84d7dd | 2311 | } else { |
12605ff9 | 2312 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2313 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2314 | } |
2315 | } | |
2316 | ||
168d5872 NIS |
2317 | int |
2318 | PerlIOUnix_refcnt_dec(int fd) | |
2319 | { | |
2320 | int cnt = 0; | |
22c96fc1 | 2321 | if (fd >= 0) { |
e17bc05a TC |
2322 | #ifdef DEBUGGING |
2323 | dTHX; | |
2324 | #else | |
97aff369 | 2325 | dVAR; |
e17bc05a | 2326 | #endif |
6cb8cb21 | 2327 | MUTEX_LOCK(&PL_perlio_mutex); |
8b84d7dd | 2328 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2329 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2330 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2331 | fd, PL_perlio_fd_refcnt_size); |
2332 | } | |
2333 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2334 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2335 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2336 | fd, PL_perlio_fd_refcnt[fd]); |
2337 | } | |
27da23d5 | 2338 | cnt = --PL_perlio_fd_refcnt[fd]; |
e17bc05a | 2339 | DEBUG_i( PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt) ); |
6cb8cb21 | 2340 | MUTEX_UNLOCK(&PL_perlio_mutex); |
8b84d7dd | 2341 | } else { |
12605ff9 | 2342 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2343 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2344 | } |
2345 | return cnt; | |
2346 | } | |
2347 | ||
2e0cfa16 FC |
2348 | int |
2349 | PerlIOUnix_refcnt(int fd) | |
2350 | { | |
2351 | dTHX; | |
2352 | int cnt = 0; | |
2353 | if (fd >= 0) { | |
2354 | dVAR; | |
2e0cfa16 | 2355 | MUTEX_LOCK(&PL_perlio_mutex); |
2e0cfa16 FC |
2356 | if (fd >= PL_perlio_fd_refcnt_size) { |
2357 | /* diag_listed_as: refcnt: fd %d%s */ | |
2358 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2359 | fd, PL_perlio_fd_refcnt_size); | |
2360 | } | |
2361 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2362 | /* diag_listed_as: refcnt: fd %d%s */ | |
2363 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2364 | fd, PL_perlio_fd_refcnt[fd]); | |
2365 | } | |
2366 | cnt = PL_perlio_fd_refcnt[fd]; | |
2e0cfa16 | 2367 | MUTEX_UNLOCK(&PL_perlio_mutex); |
2e0cfa16 FC |
2368 | } else { |
2369 | /* diag_listed_as: refcnt: fd %d%s */ | |
2370 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2371 | } | |
2372 | return cnt; | |
2373 | } | |
2374 | ||
694c95cf JH |
2375 | void |
2376 | PerlIO_cleanup(pTHX) | |
2377 | { | |
2378 | int i; | |
2379 | #ifdef USE_ITHREADS | |
e17bc05a | 2380 | DEBUG_i( PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX) ); |
9f4bd222 | 2381 | #else |
e17bc05a | 2382 | DEBUG_i( PerlIO_debug("Cleanup layers\n") ); |
694c95cf | 2383 | #endif |
e47547a8 | 2384 | |
694c95cf JH |
2385 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2386 | for (i=0; i < 3; i++) | |
2387 | PerlIOUnix_refcnt_inc(i); | |
2388 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2389 | /* Restore STDIN..STDERR refcount */ | |
2390 | for (i=0; i < 3; i++) | |
2391 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2392 | |
2393 | if (PL_known_layers) { | |
2394 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2395 | PL_known_layers = NULL; | |
2396 | } | |
27da23d5 | 2397 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2398 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2399 | PL_def_layerlist = NULL; | |
2400 | } | |
6cb8cb21 RGS |
2401 | } |
2402 | ||
0934c9d9 | 2403 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2404 | { |
53d44271 | 2405 | dVAR; |
4f3da17a DM |
2406 | #if 0 |
2407 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2408 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2409 | being present (at least in win32) :-(. | |
2410 | Disable for now. | |
2411 | */ | |
6cb8cb21 RGS |
2412 | #ifdef DEBUGGING |
2413 | { | |
2414 | /* By now all filehandles should have been closed, so any | |
2415 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2416 | * errors. */ | |
77db880c JH |
2417 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2418 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2419 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2420 | int i; |
2421 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2422 | if (PL_perlio_fd_refcnt[i]) { |
2423 | const STRLEN len = | |
2424 | my_snprintf(buf, sizeof(buf), | |
2425 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2426 | i, PL_perlio_fd_refcnt[i]); | |
2427 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2428 | } | |
6cb8cb21 RGS |
2429 | } |
2430 | } | |
2431 | #endif | |
4f3da17a | 2432 | #endif |
eae082a0 JH |
2433 | /* Not bothering with PL_perlio_mutex since by now |
2434 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2435 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2436 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2437 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2438 | PL_perlio_fd_refcnt = NULL; |
2439 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2440 | } |
694c95cf JH |
2441 | } |
2442 | ||
9e353e3b | 2443 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2444 | /* |
71200d45 | 2445 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2446 | */ |
9e353e3b | 2447 | |
14a5cf38 | 2448 | typedef struct { |
22569500 NIS |
2449 | struct _PerlIO base; /* The generic part */ |
2450 | int fd; /* UNIX like file descriptor */ | |
2451 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2452 | } PerlIOUnix; |
2453 | ||
abf9167d DM |
2454 | static void |
2455 | S_lockcnt_dec(pTHX_ const void* f) | |
2456 | { | |
dd791c72 JH |
2457 | #ifndef PERL_IMPLICIT_SYS |
2458 | PERL_UNUSED_CONTEXT; | |
2459 | #endif | |
abf9167d DM |
2460 | PerlIO_lockcnt((PerlIO*)f)--; |
2461 | } | |
2462 | ||
2463 | ||
2464 | /* call the signal handler, and if that handler happens to clear | |
2465 | * this handle, free what we can and return true */ | |
2466 | ||
2467 | static bool | |
2468 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2469 | ENTER; | |
2470 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2471 | PerlIO_lockcnt(f)++; | |
2472 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2473 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2474 | LEAVE; | |
abf9167d | 2475 | return 0; |
be48bbe8 | 2476 | } |
abf9167d DM |
2477 | /* we've just run some perl-level code that could have done |
2478 | * anything, including closing the file or clearing this layer. | |
2479 | * If so, free any lower layers that have already been | |
2480 | * cleared, then return an error. */ | |
2481 | while (PerlIOValid(f) && | |
2482 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2483 | { | |
2484 | const PerlIOl *l = *f; | |
2485 | *f = l->next; | |
2486 | Safefree(l); | |
2487 | } | |
be48bbe8 | 2488 | LEAVE; |
abf9167d DM |
2489 | return 1; |
2490 | } | |
2491 | ||
6f9d8c32 | 2492 | int |
9e353e3b | 2493 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2494 | { |
14a5cf38 | 2495 | int oflags = -1; |
3b6c1aba | 2496 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2497 | mode++; |
2498 | switch (*mode) { | |
2499 | case 'r': | |
2500 | oflags = O_RDONLY; | |
2501 | if (*++mode == '+') { | |
2502 | oflags = O_RDWR; | |
2503 | mode++; | |
2504 | } | |
2505 | break; | |
2506 | ||
2507 | case 'w': | |
2508 | oflags = O_CREAT | O_TRUNC; | |
2509 | if (*++mode == '+') { | |
2510 | oflags |= O_RDWR; | |
2511 | mode++; | |
2512 | } | |
2513 | else | |
2514 | oflags |= O_WRONLY; | |
2515 | break; | |
2516 | ||
2517 | case 'a': | |
2518 | oflags = O_CREAT | O_APPEND; | |
2519 | if (*++mode == '+') { | |
2520 | oflags |= O_RDWR; | |
2521 | mode++; | |
2522 | } | |
2523 | else | |
2524 | oflags |= O_WRONLY; | |
2525 | break; | |
2526 | } | |
43e5477e JH |
2527 | |
2528 | /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */ | |
2529 | ||
2530 | /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one | |
2531 | * of them in, and then bit-and-masking the other them away, won't | |
2532 | * have much of an effect. */ | |
2533 | switch (*mode) { | |
2534 | case 'b': | |
2535 | #if O_TEXT != O_BINARY | |
2536 | oflags |= O_BINARY; | |
14a5cf38 | 2537 | oflags &= ~O_TEXT; |
43e5477e JH |
2538 | #endif |
2539 | mode++; | |
2540 | break; | |
2541 | case 't': | |
2542 | #if O_TEXT != O_BINARY | |
14a5cf38 JH |
2543 | oflags |= O_TEXT; |
2544 | oflags &= ~O_BINARY; | |
43e5477e JH |
2545 | #endif |
2546 | mode++; | |
2547 | break; | |
2548 | default: | |
2549 | # if O_BINARY != 0 | |
2550 | /* bit-or:ing with zero O_BINARY would be useless. */ | |
93f31ee9 PG |
2551 | /* |
2552 | * If neither "t" nor "b" was specified, open the file | |
2553 | * in O_BINARY mode. | |
43e5477e JH |
2554 | * |
2555 | * Note that if something else than the zero byte was seen | |
2556 | * here (e.g. bogus mode "rx"), just few lines later we will | |
2557 | * set the errno and invalidate the flags. | |
93f31ee9 PG |
2558 | */ |
2559 | oflags |= O_BINARY; | |
43e5477e JH |
2560 | # endif |
2561 | break; | |
93f31ee9 | 2562 | } |
14a5cf38 | 2563 | if (*mode || oflags == -1) { |
93189314 | 2564 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2565 | oflags = -1; |
2566 | } | |
2567 | return oflags; | |
9e353e3b NIS |
2568 | } |
2569 | ||
2570 | IV | |
f62ce20a | 2571 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2572 | { |
96a5add6 | 2573 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2574 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2575 | } |
2576 | ||
aa063c35 NIS |
2577 | static void |
2578 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2579 | { |
de009b76 | 2580 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2581 | #if defined(WIN32) |
aa063c35 NIS |
2582 | Stat_t st; |
2583 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2584 | if (!S_ISREG(st.st_mode)) { |
e17bc05a | 2585 | DEBUG_i( PerlIO_debug("%d is not regular file\n",fd) ); |
6caa5a9c NIS |
2586 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2587 | } | |
aa063c35 | 2588 | else { |
e17bc05a | 2589 | DEBUG_i( PerlIO_debug("%d _is_ a regular file\n",fd) ); |
aa063c35 | 2590 | } |
6caa5a9c NIS |
2591 | } |
2592 | #endif | |
aa063c35 NIS |
2593 | s->fd = fd; |
2594 | s->oflags = imode; | |
2595 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2596 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2597 | } |
2598 | ||
2599 | IV | |
2600 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2601 | { | |
2602 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2603 | if (*PerlIONext(f)) { |
4b069b44 | 2604 | /* We never call down so do any pending stuff now */ |
03c0554d | 2605 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2606 | /* |
71200d45 | 2607 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2608 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2609 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2610 | */ |
acbd16bf | 2611 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2612 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2613 | } |
2614 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2615 | |
14a5cf38 | 2616 | return code; |
4b803d04 NIS |
2617 | } |
2618 | ||
c2fcde81 JH |
2619 | IV |
2620 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2621 | { | |
de009b76 | 2622 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2623 | Off_t new_loc; |
96a5add6 | 2624 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2625 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2626 | #ifdef ESPIPE | |
2627 | SETERRNO(ESPIPE, LIB_INVARG); | |
2628 | #else | |
2629 | SETERRNO(EINVAL, LIB_INVARG); | |
2630 | #endif | |
2631 | return -1; | |
2632 | } | |
0723351e NC |
2633 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2634 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2635 | return -1; |
c2fcde81 JH |
2636 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2637 | return 0; | |
2638 | } | |
2639 | ||
9e353e3b | 2640 | PerlIO * |
14a5cf38 JH |
2641 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2642 | IV n, const char *mode, int fd, int imode, | |
2643 | int perm, PerlIO *f, int narg, SV **args) | |
2644 | { | |
884fc2d3 | 2645 | bool known_cloexec = 0; |
d9dac8cd | 2646 | if (PerlIOValid(f)) { |
cc6623a8 | 2647 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2648 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2649 | } |
2650 | if (narg > 0) { | |
3b6c1aba | 2651 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2652 | mode++; |
2653 | else { | |
2654 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2655 | #ifdef VMS |
2656 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2657 | #else | |
14a5cf38 | 2658 | perm = 0666; |
5e2ce0f3 | 2659 | #endif |
14a5cf38 JH |
2660 | } |
2661 | if (imode != -1) { | |
41188aa0 TC |
2662 | STRLEN len; |
2663 | const char *path = SvPV_const(*args, len); | |
2664 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2665 | return NULL; |
884fc2d3 Z |
2666 | fd = PerlLIO_open3_cloexec(path, imode, perm); |
2667 | known_cloexec = 1; | |
14a5cf38 JH |
2668 | } |
2669 | } | |
2670 | if (fd >= 0) { | |
884fc2d3 Z |
2671 | if (known_cloexec) |
2672 | setfd_inhexec_for_sysfd(fd); | |
2673 | else | |
2674 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
3b6c1aba | 2675 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2676 | mode++; |
2677 | if (!f) { | |
2678 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2679 | } |
2680 | if (!PerlIOValid(f)) { | |
a33cf58c | 2681 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2682 | PerlLIO_close(fd); |
a33cf58c NIS |
2683 | return NULL; |
2684 | } | |
d9dac8cd | 2685 | } |
aa063c35 | 2686 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2687 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2688 | if (*mode == IoTYPE_APPEND) |
2689 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2690 | return f; |
2691 | } | |
2692 | else { | |
2693 | if (f) { | |
6f207bd3 | 2694 | NOOP; |
14a5cf38 | 2695 | /* |
71200d45 | 2696 | * FIXME: pop layers ??? |
14a5cf38 JH |
2697 | */ |
2698 | } | |
2699 | return NULL; | |
2700 | } | |
9e353e3b NIS |
2701 | } |
2702 | ||
71200d45 | 2703 | PerlIO * |
ecdeb87c | 2704 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2705 | { |
dcda55fc | 2706 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2707 | int fd = os->fd; |
ecdeb87c | 2708 | if (flags & PERLIO_DUP_FD) { |
884fc2d3 Z |
2709 | fd = PerlLIO_dup_cloexec(fd); |
2710 | if (fd >= 0) | |
2711 | setfd_inhexec_for_sysfd(fd); | |
ecdeb87c | 2712 | } |
22c96fc1 | 2713 | if (fd >= 0) { |
ecdeb87c | 2714 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2715 | if (f) { |
2716 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2717 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2718 | return f; |
2719 | } | |
0a20f69b | 2720 | PerlLIO_close(fd); |
71200d45 NIS |
2721 | } |
2722 | return NULL; | |
2723 | } | |
2724 | ||
2725 | ||
9e353e3b | 2726 | SSize_t |
f62ce20a | 2727 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2728 | { |
abf9167d DM |
2729 | int fd; |
2730 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2731 | return -1; | |
2732 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2733 | #ifdef PERLIO_STD_SPECIAL |
2734 | if (fd == 0) | |
2735 | return PERLIO_STD_IN(fd, vbuf, count); | |
2736 | #endif | |
81428673 | 2737 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2738 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2739 | return 0; |
1fd8f4ce | 2740 | } |
14a5cf38 | 2741 | while (1) { |
b464bac0 | 2742 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2743 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2744 | if (len < 0) { |
2745 | if (errno != EAGAIN) { | |
2746 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2747 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2748 | } |
2749 | } | |
2750 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2751 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2752 | SETERRNO(0,0); |
2753 | } | |
14a5cf38 JH |
2754 | return len; |
2755 | } | |
abf9167d DM |
2756 | /* EINTR */ |
2757 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2758 | return -1; | |
14a5cf38 | 2759 | } |
e5964223 | 2760 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2761 | } |
2762 | ||
2763 | SSize_t | |
f62ce20a | 2764 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2765 | { |
abf9167d DM |
2766 | int fd; |
2767 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2768 | return -1; | |
2769 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2770 | #ifdef PERLIO_STD_SPECIAL |
2771 | if (fd == 1 || fd == 2) | |
2772 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2773 | #endif | |
14a5cf38 | 2774 | while (1) { |
de009b76 | 2775 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2776 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2777 | if (len < 0) { |
2778 | if (errno != EAGAIN) { | |
2779 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2780 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2781 | } |
2782 | } | |
14a5cf38 JH |
2783 | return len; |
2784 | } | |
abf9167d DM |
2785 | /* EINTR */ |
2786 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2787 | return -1; | |
06da4f11 | 2788 | } |
e5964223 | 2789 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2790 | } |
2791 | ||
9e353e3b | 2792 | Off_t |
f62ce20a | 2793 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2794 | { |
96a5add6 AL |
2795 | PERL_UNUSED_CONTEXT; |
2796 | ||
14a5cf38 | 2797 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2798 | } |
2799 | ||
2556f95e GF |
2800 | |
2801 | IV | |
2376d97d | 2802 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2803 | { |
de009b76 | 2804 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2805 | int code = 0; |
168d5872 NIS |
2806 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2807 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2808 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2809 | return 0; | |
22569500 | 2810 | } |
93a8090d NIS |
2811 | } |
2812 | else { | |
93189314 | 2813 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2814 | return -1; |
2815 | } | |
14a5cf38 JH |
2816 | while (PerlLIO_close(fd) != 0) { |
2817 | if (errno != EINTR) { | |
2818 | code = -1; | |
2819 | break; | |
2820 | } | |
abf9167d DM |
2821 | /* EINTR */ |
2822 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2823 | return -1; | |
14a5cf38 JH |
2824 | } |
2825 | if (code == 0) { | |
2826 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2827 | } | |
2828 | return code; | |
9e353e3b NIS |
2829 | } |
2830 | ||
27da23d5 | 2831 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2832 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2833 | "unix", |
2834 | sizeof(PerlIOUnix), | |
2835 | PERLIO_K_RAW, | |
2836 | PerlIOUnix_pushed, | |
2376d97d | 2837 | PerlIOBase_popped, |
14a5cf38 | 2838 | PerlIOUnix_open, |
86e05cf2 | 2839 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2840 | NULL, |
2841 | PerlIOUnix_fileno, | |
71200d45 | 2842 | PerlIOUnix_dup, |
14a5cf38 JH |
2843 | PerlIOUnix_read, |
2844 | PerlIOBase_unread, | |
2845 | PerlIOUnix_write, | |
2846 | PerlIOUnix_seek, | |
2847 | PerlIOUnix_tell, | |
2848 | PerlIOUnix_close, | |
22569500 NIS |
2849 | PerlIOBase_noop_ok, /* flush */ |
2850 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2851 | PerlIOBase_eof, |
2852 | PerlIOBase_error, | |
2853 | PerlIOBase_clearerr, | |
2854 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2855 | NULL, /* get_base */ |
2856 | NULL, /* get_bufsiz */ | |
2857 | NULL, /* get_ptr */ | |
2858 | NULL, /* get_cnt */ | |
2859 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2860 | }; |
2861 | ||
2862 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2863 | /* |
71200d45 | 2864 | * stdio as a layer |
14a5cf38 | 2865 | */ |
9e353e3b | 2866 | |
313e59c8 NIS |
2867 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2868 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2869 | broken by the last second glibc 2.3 fix | |
2870 | */ | |
2871 | #define STDIO_BUFFER_WRITABLE | |
2872 | #endif | |
2873 | ||
2874 | ||
14a5cf38 JH |
2875 | typedef struct { |
2876 | struct _PerlIO base; | |
22569500 | 2877 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2878 | } PerlIOStdio; |
2879 | ||
2880 | IV | |
f62ce20a | 2881 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2882 | { |
96a5add6 AL |
2883 | PERL_UNUSED_CONTEXT; |
2884 | ||
c4420975 AL |
2885 | if (PerlIOValid(f)) { |
2886 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2887 | if (s) | |
2888 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2889 | } |
2890 | errno = EBADF; | |
2891 | return -1; | |
9e353e3b NIS |
2892 | } |
2893 | ||
766a733e | 2894 | char * |
14a5cf38 JH |
2895 | PerlIOStdio_mode(const char *mode, char *tmode) |
2896 | { | |
de009b76 | 2897 | char * const ret = tmode; |
a0625d38 SR |
2898 | if (mode) { |
2899 | while (*mode) { | |
2900 | *tmode++ = *mode++; | |
2901 | } | |
14a5cf38 | 2902 | } |
95005ad8 | 2903 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2904 | *tmode++ = 'b'; |
2905 | #endif | |
14a5cf38 JH |
2906 | *tmode = '\0'; |
2907 | return ret; | |
2908 | } | |
2909 | ||
4b803d04 | 2910 | IV |
2dc2558e | 2911 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2912 | { |
1fd8f4ce NIS |
2913 | PerlIO *n; |
2914 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2915 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2916 | if (toptab == tab) { |
2917 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2918 | PerlIO_pop(aTHX_ f); | |
2919 | return 0; | |
2920 | } else { | |
de009b76 | 2921 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2922 | char tmode[8]; |
2923 | FILE *stdio; | |
81428673 | 2924 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2925 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2926 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2927 | /* We never call down so do any pending stuff now */ | |
2928 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2929 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2930 | } |
1fd8f4ce NIS |
2931 | else { |
2932 | return -1; | |
2933 | } | |
2934 | } | |
14a5cf38 | 2935 | } |
2dc2558e | 2936 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2937 | } |
2938 | ||
22569500 | 2939 | |
9e353e3b | 2940 | PerlIO * |
4b069b44 | 2941 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2942 | { |
14a5cf38 JH |
2943 | dTHX; |
2944 | PerlIO *f = NULL; | |
ea5bc90f YK |
2945 | #ifdef EBCDIC |
2946 | int rc; | |
2947 | char filename[FILENAME_MAX]; | |
2948 | fldata_t fileinfo; | |
2949 | #endif | |
14a5cf38 | 2950 | if (stdio) { |
22569500 | 2951 | PerlIOStdio *s; |
375ed12a JH |
2952 | int fd0 = fileno(stdio); |
2953 | if (fd0 < 0) { | |
ea5bc90f YK |
2954 | #ifdef EBCDIC |
2955 | rc = fldata(stdio,filename,&fileinfo); | |
2956 | if(rc != 0){ | |
2957 | return NULL; | |
2958 | } | |
2959 | if(fileinfo.__dsorgHFS){ | |
2960 | return NULL; | |
2961 | } | |
2962 | /*This MVS dataset , OK!*/ | |
2963 | #else | |
375ed12a | 2964 | return NULL; |
ea5bc90f | 2965 | #endif |
375ed12a | 2966 | } |
4b069b44 NIS |
2967 | if (!mode || !*mode) { |
2968 | /* We need to probe to see how we can open the stream | |
2969 | so start with read/write and then try write and read | |
2970 | we dup() so that we can fclose without loosing the fd. | |
2971 | ||
2972 | Note that the errno value set by a failing fdopen | |
2973 | varies between stdio implementations. | |
2974 | */ | |
884fc2d3 | 2975 | const int fd = PerlLIO_dup_cloexec(fd0); |
375ed12a JH |
2976 | FILE *f2; |
2977 | if (fd < 0) { | |
2978 | return f; | |
2979 | } | |
2980 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2981 | if (!f2) { |
a33cf58c | 2982 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2983 | } |
2984 | if (!f2) { | |
a33cf58c | 2985 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2986 | } |
2987 | if (!f2) { | |
2988 | /* Don't seem to be able to open */ | |
2989 | PerlLIO_close(fd); | |
2990 | return f; | |
2991 | } | |
2992 | fclose(f2); | |
22569500 | 2993 | } |
de092133 | 2994 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2995 | s = PerlIOSelf(f, PerlIOStdio); |
2996 | s->stdio = stdio; | |
884fc2d3 Z |
2997 | fd0 = fileno(stdio); |
2998 | if(fd0 != -1){ | |
2999 | PerlIOUnix_refcnt_inc(fd0); | |
3000 | setfd_cloexec_or_inhexec_by_sysfdness(fd0); | |
3001 | } | |
ea5bc90f | 3002 | #ifdef EBCDIC |
ea5bc90f YK |
3003 | else{ |
3004 | rc = fldata(stdio,filename,&fileinfo); | |
3005 | if(rc != 0){ | |
3006 | PerlIOUnix_refcnt_inc(fd0); | |
3007 | } | |
3008 | if(fileinfo.__dsorgHFS){ | |
3009 | PerlIOUnix_refcnt_inc(fd0); | |
3010 | } | |
3011 | /*This MVS dataset , OK!*/ | |
3012 | } | |
ea5bc90f | 3013 | #endif |
a33cf58c | 3014 | } |
14a5cf38 JH |
3015 | } |
3016 | return f; | |
9e353e3b NIS |
3017 | } |
3018 | ||
3019 | PerlIO * | |
14a5cf38 JH |
3020 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3021 | IV n, const char *mode, int fd, int imode, | |
3022 | int perm, PerlIO *f, int narg, SV **args) | |
3023 | { | |
3024 | char tmode[8]; | |
d9dac8cd | 3025 | if (PerlIOValid(f)) { |
41188aa0 TC |
3026 | STRLEN len; |
3027 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 3028 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 3029 | FILE *stdio; |
41188aa0 | 3030 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 3031 | return NULL; |
1751d015 | 3032 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
3033 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
3034 | s->stdio); | |
14a5cf38 JH |
3035 | if (!s->stdio) |
3036 | return NULL; | |
3037 | s->stdio = stdio; | |
884fc2d3 Z |
3038 | fd = fileno(stdio); |
3039 | PerlIOUnix_refcnt_inc(fd); | |
3040 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
14a5cf38 JH |
3041 | return f; |
3042 | } | |
3043 | else { | |
3044 | if (narg > 0) { | |
41188aa0 TC |
3045 | STRLEN len; |
3046 | const char * const path = SvPV_const(*args, len); | |
3047 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 3048 | return NULL; |
3b6c1aba | 3049 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 | 3050 | mode++; |
884fc2d3 | 3051 | fd = PerlLIO_open3_cloexec(path, imode, perm); |
14a5cf38 JH |
3052 | } |
3053 | else { | |
95005ad8 GH |
3054 | FILE *stdio; |
3055 | bool appended = FALSE; | |
3056 | #ifdef __CYGWIN__ | |
3057 | /* Cygwin wants its 'b' early. */ | |
3058 | appended = TRUE; | |
3059 | mode = PerlIOStdio_mode(mode, tmode); | |
3060 | #endif | |
3061 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3062 | if (stdio) { |
6f0313ac JH |
3063 | if (!f) { |
3064 | f = PerlIO_allocate(aTHX); | |
3065 | } | |
95005ad8 GH |
3066 | if (!appended) |
3067 | mode = PerlIOStdio_mode(mode, tmode); | |
3068 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3069 | if (f) { | |
0f0f9e2b | 3070 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
884fc2d3 Z |
3071 | fd = fileno(stdio); |
3072 | PerlIOUnix_refcnt_inc(fd); | |
3073 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
0f0f9e2b JH |
3074 | } else { |
3075 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3076 | } |
3077 | return f; | |
3078 | } | |
3079 | else { | |
3080 | return NULL; | |
3081 | } | |
14a5cf38 JH |
3082 | } |
3083 | } | |
3084 | if (fd >= 0) { | |
3085 | FILE *stdio = NULL; | |
3086 | int init = 0; | |
3b6c1aba | 3087 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3088 | init = 1; |
3089 | mode++; | |
3090 | } | |
3091 | if (init) { | |
3092 | switch (fd) { | |
3093 | case 0: | |
3094 | stdio = PerlSIO_stdin; | |
3095 | break; | |
3096 | case 1: | |
3097 | stdio = PerlSIO_stdout; | |
3098 | break; | |
3099 | case 2: | |
3100 | stdio = PerlSIO_stderr; | |
3101 | break; | |
3102 | } | |
3103 | } | |
3104 | else { | |
3105 | stdio = PerlSIO_fdopen(fd, mode = | |
3106 | PerlIOStdio_mode(mode, tmode)); | |
3107 | } | |
3108 | if (stdio) { | |
d9dac8cd NIS |
3109 | if (!f) { |
3110 | f = PerlIO_allocate(aTHX); | |
3111 | } | |
a33cf58c | 3112 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba | 3113 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
884fc2d3 Z |
3114 | fd = fileno(stdio); |
3115 | PerlIOUnix_refcnt_inc(fd); | |
3116 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
a33cf58c | 3117 | } |
14a5cf38 JH |
3118 | return f; |
3119 | } | |
0a20f69b | 3120 | PerlLIO_close(fd); |
14a5cf38 JH |
3121 | } |
3122 | } | |
ee518936 | 3123 | return NULL; |
9e353e3b NIS |
3124 | } |
3125 | ||
1751d015 | 3126 | PerlIO * |
ecdeb87c | 3127 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3128 | { |
3129 | /* This assumes no layers underneath - which is what | |
3130 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3131 | */ | |
ecdeb87c | 3132 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3133 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3134 | const int fd = fileno(stdio); |
9217ff3f | 3135 | char mode[8]; |
ecdeb87c | 3136 | if (flags & PERLIO_DUP_FD) { |
884fc2d3 | 3137 | const int dfd = PerlLIO_dup_cloexec(fileno(stdio)); |
9217ff3f NIS |
3138 | if (dfd >= 0) { |
3139 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3140 | goto set_this; | |
ecdeb87c NIS |
3141 | } |
3142 | else { | |
6f207bd3 | 3143 | NOOP; |
ecdeb87c NIS |
3144 | /* FIXME: To avoid messy error recovery if dup fails |
3145 | re-use the existing stdio as though flag was not set | |
3146 | */ | |
3147 | } | |
3148 | } | |
9217ff3f NIS |
3149 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3150 | set_this: | |
694c95cf | 3151 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 | 3152 | if(stdio) { |
884fc2d3 Z |
3153 | int fd = fileno(stdio); |
3154 | PerlIOUnix_refcnt_inc(fd); | |
3155 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
40596bc5 | 3156 | } |
1751d015 NIS |
3157 | } |
3158 | return f; | |
3159 | } | |
3160 | ||
0d7a5398 NIS |
3161 | static int |
3162 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3163 | { | |
96a5add6 AL |
3164 | PERL_UNUSED_CONTEXT; |
3165 | ||
0d7a5398 | 3166 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3167 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3168 | */ |
36b1c892 AD |
3169 | # if defined(HAS_FDCLOSE) |
3170 | return fdclose(f, NULL) == 0 ? 1 : 0; | |
3171 | # elif defined(__UCLIBC__) | |
ef8eacb8 AT |
3172 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ |
3173 | f->__filedes = -1; | |
3174 | return 1; | |
3175 | # elif defined(__GLIBC__) | |
0d7a5398 | 3176 | /* There may be a better way for GLIBC: |
37725cdc | 3177 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3178 | */ |
3179 | f->_fileno = -1; | |
3180 | return 1; | |
bdea967c | 3181 | # elif defined(__sun) |
f5992bc4 | 3182 | PERL_UNUSED_ARG(f); |
cfedb851 | 3183 | return 0; |
0d7a5398 NIS |
3184 | # elif defined(__hpux) |
3185 | f->__fileH = 0xff; | |
3186 | f->__fileL = 0xff; | |
3187 | return 1; | |
9837d373 | 3188 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3189 | your platform does not have special entry try this one. |
9837d373 NIS |
3190 | [For OSF only have confirmation for Tru64 (alpha) |
3191 | but assume other OSFs will be similar.] | |
37725cdc | 3192 | */ |
9837d373 | 3193 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3194 | f->_file = -1; |
3195 | return 1; | |
3196 | # elif defined(__FreeBSD__) | |
3197 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3198 | - we could insert a dummy func in the _close function entry |
3199 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3200 | */ |
3201 | f->_file = -1; | |
0c49ea6a SU |
3202 | return 1; |
3203 | # elif defined(__OpenBSD__) | |
3204 | /* There may be a better way on OpenBSD: | |
3205 | - we could insert a dummy func in the _close function entry | |
3206 | f->_close = (int (*)(void *)) dummy_close; | |
3207 | */ | |
3208 | f->_file = -1; | |
0d7a5398 | 3209 | return 1; |
59ad941d IZ |
3210 | # elif defined(__EMX__) |
3211 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3212 | f->_handle = -1; | |
3213 | return 1; | |
0d7a5398 NIS |
3214 | # elif defined(__CYGWIN__) |
3215 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3216 | - we could insert a dummy func in the _close function entry |
3217 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3218 | */ |
3219 | f->_file = -1; | |
3220 | return 1; | |
3221 | # elif defined(WIN32) | |
378eeda7 | 3222 | # if defined(UNDER_CE) |
b475b3e6 JH |
3223 | /* WIN_CE does not have access to FILE internals, it hardly has FILE |
3224 | structure at all | |
3225 | */ | |
0d7a5398 | 3226 | # else |
1f664ef5 | 3227 | PERLIO_FILE_file(f) = -1; |
0d7a5398 NIS |
3228 | # endif |
3229 | return 1; | |
3230 | # else | |
3231 | #if 0 | |
37725cdc | 3232 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3233 | (which isn't thread safe) instead |
37725cdc | 3234 | */ |
0d7a5398 NIS |
3235 | # error "Don't know how to set FILE.fileno on your platform" |
3236 | #endif | |
8772537c | 3237 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3238 | return 0; |
3239 | # endif | |
3240 | } | |
3241 | ||
1751d015 | 3242 | IV |
f62ce20a | 3243 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3244 | { |
c4420975 | 3245 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3246 | if (!stdio) { |
3247 | errno = EBADF; | |
3248 | return -1; | |
3249 | } | |
9217ff3f | 3250 | else { |
de009b76 | 3251 | const int fd = fileno(stdio); |
0d7a5398 | 3252 | int invalidate = 0; |
bbfd922f | 3253 | IV result = 0; |
1d791a44 | 3254 | int dupfd = -1; |
4ee39169 | 3255 | dSAVEDERRNO; |
a2e578da MHM |
3256 | #ifdef USE_ITHREADS |
3257 | dVAR; | |
3258 | #endif | |
0d7a5398 | 3259 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3260 | /* Socks lib overrides close() but stdio isn't linked to |
3261 | that library (though we are) - so we must call close() | |
3262 | on sockets on stdio's behalf. | |
3263 | */ | |
0d7a5398 NIS |
3264 | int optval; |
3265 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3266 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3267 | invalidate = 1; |
0d7a5398 | 3268 | #endif |
d8723f43 NC |
3269 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3270 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3271 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3272 | trying to close an already closed handle which somehow it still has | |
3273 | a reference to. (via.xs, I'm looking at you). */ | |
3274 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3275 | /* File descriptor still in use */ | |
0d7a5398 | 3276 | invalidate = 1; |
d8723f43 | 3277 | } |
0d7a5398 | 3278 | if (invalidate) { |
6b4ce6c8 AL |
3279 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3280 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3281 | return 0; | |
3282 | if (stdio == stdout || stdio == stderr) | |
3283 | return PerlIO_flush(f); | |
d88f7f65 | 3284 | } |
d88f7f65 JH |
3285 | MUTEX_LOCK(&PL_perlio_mutex); |
3286 | /* Right. We need a mutex here because for a brief while we | |
3287 | will have the situation that fd is actually closed. Hence if | |
3288 | a second thread were to get into this block, its dup() would | |
3289 | likely return our fd as its dupfd. (after all, it is closed) | |
3290 | Then if we get to the dup2() first, we blat the fd back | |
3291 | (messing up its temporary as a side effect) only for it to | |
3292 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3293 | ||
3294 | /* There is, of course, a race condition, that any other thread | |
3295 | trying to input/output/whatever on this fd will be stuffed | |
3296 | for the duration of this little manoeuvrer. Perhaps we | |
3297 | should hold an IO mutex for the duration of every IO | |
3298 | operation if we know that invalidate doesn't work on this | |
3299 | platform, but that would suck, and could kill performance. | |
3300 | ||
3301 | Except that correctness trumps speed. | |
3302 | Advice from klortho #11912. */ | |
d88f7f65 | 3303 | if (invalidate) { |
37725cdc NIS |
3304 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3305 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3306 | fileno slot of the FILE * | |
3307 | */ | |
bbfd922f | 3308 | result = PerlIO_flush(f); |
4ee39169 | 3309 | SAVE_ERRNO; |
6b4ce6c8 | 3310 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3311 | if (!invalidate) { |
884fc2d3 | 3312 | dupfd = PerlLIO_dup_cloexec(fd); |
711e8db2 | 3313 | #ifdef USE_ITHREADS |
9bab90c0 | 3314 | if (dupfd < 0) { |
711e8db2 NC |
3315 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3316 | recover from here, or if closing this particular FILE * | |
3317 | is a good idea now. */ | |
3318 | } | |
3319 | #endif | |
3320 | } | |
94ccb807 JH |
3321 | } else { |
3322 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3323 | } |
0d7a5398 | 3324 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3325 | /* We treat error from stdio as success if we invalidated |
3326 | errno may NOT be expected EBADF | |
e8529473 NIS |
3327 | */ |
3328 | if (invalidate && result != 0) { | |
4ee39169 | 3329 | RESTORE_ERRNO; |
0d7a5398 | 3330 | result = 0; |
37725cdc | 3331 | } |
6b4ce6c8 AL |
3332 | #ifdef SOCKS5_VERSION_NAME |
3333 | /* in SOCKS' case, let close() determine return value */ | |
3334 | result = close(fd); | |
3335 | #endif | |
1d791a44 | 3336 | if (dupfd >= 0) { |
884fc2d3 Z |
3337 | PerlLIO_dup2_cloexec(dupfd, fd); |
3338 | setfd_inhexec_for_sysfd(fd); | |
9bab90c0 | 3339 | PerlLIO_close(dupfd); |
d88f7f65 | 3340 | } |
d88f7f65 | 3341 | MUTEX_UNLOCK(&PL_perlio_mutex); |
9217ff3f | 3342 | return result; |
37725cdc | 3343 | } |
1751d015 NIS |
3344 | } |
3345 | ||
9e353e3b | 3346 | SSize_t |
f62ce20a | 3347 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3348 | { |
abf9167d | 3349 | FILE * s; |
14a5cf38 | 3350 | SSize_t got = 0; |
abf9167d DM |
3351 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3352 | return -1; | |
3353 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3354 | for (;;) { |
3355 | if (count == 1) { | |
3356 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3357 | /* | |
3358 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3359 | * stdio does not do that for fread() | |
3360 | */ | |
de009b76 | 3361 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3362 | if (ch != EOF) { |
3363 | *buf = ch; | |
3364 | got = 1; | |
3365 | } | |
14a5cf38 | 3366 | } |
4d948241 NIS |
3367 | else |
3368 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3369 | if (got == 0 && PerlSIO_ferror(s)) |
3370 | got = -1; | |
42a7a32f | 3371 | if (got >= 0 || errno != EINTR) |
4d948241 | 3372 | break; |
abf9167d DM |
3373 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3374 | return -1; | |
42a7a32f | 3375 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3376 | } |
bdae4172 JH |
3377 | #ifdef __sgi |
3378 | /* Under some circumstances IRIX stdio fgetc() and fread() | |
3379 | * set the errno to ENOENT, which makes no sense according | |
3380 | * to either IRIX or POSIX. [rt.perl.org #123977] */ | |
3381 | if (errno == ENOENT) SETERRNO(0,0); | |
3382 | #endif | |
14a5cf38 | 3383 | return got; |
9e353e3b NIS |
3384 | } |
3385 | ||
3386 | SSize_t | |
f62ce20a | 3387 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3388 | { |
14a5cf38 | 3389 | SSize_t unread = 0; |
c4420975 | 3390 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3391 | |
313e59c8 | 3392 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3393 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3394 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3395 | STDCHAR *base = PerlIO_get_base(f); | |
3396 | SSize_t cnt = PerlIO_get_cnt(f); | |
3397 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3398 | SSize_t avail = ptr - base; | |
3399 | if (avail > 0) { | |
3400 | if (avail > count) { | |
3401 | avail = count; | |
3402 | } | |
3403 | ptr -= avail; | |
3404 | Move(buf-avail,ptr,avail,STDCHAR); | |
3405 | count -= avail; | |
3406 | unread += avail; | |
3407 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3408 | if (PerlSIO_feof(s) && unread >= 0) |
3409 | PerlSIO_clearerr(s); | |
3410 | } | |
3411 | } | |
313e59c8 NIS |
3412 | else |
3413 | #endif | |
3414 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3415 | /* We can get pointer to buffer but not its base |
3416 | Do ungetc() but check chars are ending up in the | |
3417 | buffer | |
3418 | */ | |
3419 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3420 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3421 | while (count > 0) { | |
de009b76 | 3422 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3423 | if (ungetc(ch,s) != ch) { |
3424 | /* ungetc did not work */ | |
3425 | break; | |
3426 | } | |
3427 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3428 | /* Did not change pointer as expected */ | |
375ed12a JH |
3429 | if (fgetc(s) != EOF) /* get char back again */ |
3430 | break; | |
9f7cd136 NIS |
3431 | } |
3432 | /* It worked ! */ | |
3433 | count--; | |
3434 | unread++; | |
93679785 NIS |
3435 | } |
3436 | } | |
3437 | ||
3438 | if (count > 0) { | |
3439 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3440 | } |
3441 | return unread; | |
9e353e3b NIS |
3442 | } |
3443 | ||
3444 | SSize_t | |
f62ce20a | 3445 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3446 | { |
4d948241 | 3447 | SSize_t got; |
abf9167d DM |
3448 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3449 | return -1; | |
4d948241 NIS |
3450 | for (;;) { |
3451 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3452 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3453 | if (got >= 0 || errno != EINTR) |
4d948241 | 3454 | break; |
abf9167d DM |
3455 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3456 | return -1; | |
42a7a32f | 3457 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3458 | } |
3459 | return got; | |
9e353e3b NIS |
3460 | } |
3461 | ||
94a175e1 | 3462 | IV |
f62ce20a | 3463 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3464 | { |
c4420975 | 3465 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3466 | PERL_UNUSED_CONTEXT; |
3467 | ||
94a175e1 | 3468 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3469 | } |
3470 | ||
3471 | Off_t | |
f62ce20a | 3472 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3473 | { |
c4420975 | 3474 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3475 | PERL_UNUSED_CONTEXT; |
3476 | ||
94a175e1 | 3477 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3478 | } |
3479 | ||
3480 | IV | |
f62ce20a | 3481 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3482 | { |
c4420975 | 3483 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3484 | PERL_UNUSED_CONTEXT; |
3485 | ||
14a5cf38 JH |
3486 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3487 | return PerlSIO_fflush(stdio); | |
3488 | } | |
3489 | else { | |
6f207bd3 | 3490 | NOOP; |
88b61e10 | 3491 | #if 0 |
14a5cf38 JH |
3492 | /* |
3493 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3494 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3495 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3496 | * layer read-to-read |
14a5cf38 JH |
3497 | */ |
3498 | /* | |
71200d45 | 3499 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3500 | */ |
4ee39169 | 3501 | dSAVE_ERRNO; |
14a5cf38 | 3502 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3503 | RESTORE_ERRNO; |
88b61e10 | 3504 | #endif |
14a5cf38 JH |
3505 | } |
3506 | return 0; | |
9e353e3b NIS |
3507 | } |
3508 | ||
3509 | IV | |
f62ce20a | 3510 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3511 | { |
96a5add6 AL |
3512 | PERL_UNUSED_CONTEXT; |
3513 | ||
14a5cf38 | 3514 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3515 | } |
3516 | ||
3517 | IV | |
f62ce20a | 3518 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3519 | { |
96a5add6 AL |
3520 | PERL_UNUSED_CONTEXT; |
3521 | ||
263df5f1 | 3522 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3523 | } |
3524 | ||
3525 | void | |
f62ce20a | 3526 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3527 | { |
96a5add6 AL |
3528 | PERL_UNUSED_CONTEXT; |
3529 | ||
14a5cf38 | 3530 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3531 | } |
3532 | ||
3533 | void | |
f62ce20a | 3534 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3535 | { |
96a5add6 AL |
3536 | PERL_UNUSED_CONTEXT; |
3537 | ||
9e353e3b | 3538 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3539 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3540 | #else |
bd61b366 | 3541 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3542 | #endif |
3543 | } | |
3544 | ||
3545 | #ifdef FILE_base | |
3546 | STDCHAR * | |
f62ce20a | 3547 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3548 | { |
c4420975 | 3549 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3550 | PERL_UNUSED_CONTEXT; |
cc00df79 | 3551 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3552 | } |
3553 | ||
3554 | Size_t | |
f62ce20a | 3555 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3556 | { |
c4420975 | 3557 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3558 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3559 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3560 | } |
3561 | #endif | |
3562 | ||
3563 | #ifdef USE_STDIO_PTR | |
3564 | STDCHAR * | |
f62ce20a | 3565 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3566 | { |
c4420975 | 3567 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3568 | PERL_UNUSED_CONTEXT; |
cc00df79 | 3569 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3570 | } |
3571 | ||
3572 | SSize_t | |
f62ce20a | 3573 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3574 | { |
c4420975 | 3575 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3576 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3577 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3578 | } |
3579 | ||
3580 | void | |
f62ce20a | 3581 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3582 | { |
c4420975 | 3583 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3584 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3585 | if (ptr != NULL) { |
9e353e3b | 3586 | #ifdef STDIO_PTR_LVALUE |
46f05249 JH |
3587 | /* This is a long-standing infamous mess. The root of the |
3588 | * problem is that one cannot know the signedness of char, and | |
3589 | * more precisely the signedness of FILE._ptr. The following | |
3590 | * things have been tried, and they have all failed (across | |
3591 | * different compilers (remember that core needs to to build | |
3592 | * also with c++) and compiler options: | |
3593 | * | |
3594 | * - casting the RHS to (void*) -- works in *some* places | |
3595 | * - casting the LHS to (void*) -- totally unportable | |
3596 | * | |
3597 | * So let's try silencing the warning at least for gcc. */ | |
7347ee54 | 3598 | GCC_DIAG_IGNORE_STMT(-Wpointer-sign); |
d06fc7d4 | 3599 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
7347ee54 | 3600 | GCC_DIAG_RESTORE_STMT; |
9e353e3b | 3601 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3602 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3603 | #endif |
3604 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3605 | /* |
71200d45 | 3606 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3607 | */ |
3608 | return; | |
9e353e3b | 3609 | #endif |
22569500 | 3610 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3611 | PerlProc_abort(); |
22569500 | 3612 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3613 | } |
3614 | /* | |
71200d45 | 3615 | * Now (or only) set cnt |
14a5cf38 | 3616 | */ |
9e353e3b | 3617 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3618 | PerlSIO_set_cnt(stdio, cnt); |
faf55891 | 3619 | #elif (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3620 | PerlSIO_set_ptr(stdio, |
3621 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3622 | cnt)); | |
22569500 | 3623 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3624 | PerlProc_abort(); |
22569500 | 3625 | #endif /* STDIO_CNT_LVALUE */ |
9e353e3b NIS |
3626 | } |
3627 | ||
93679785 | 3628 | |
9e353e3b NIS |
3629 | #endif |
3630 | ||
93679785 NIS |
3631 | IV |
3632 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3633 | { | |
abf9167d | 3634 | FILE * stdio; |
93679785 | 3635 | int c; |
96a5add6 | 3636 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3637 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3638 | return -1; | |
3639 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3640 | |
93679785 NIS |
3641 | /* |
3642 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3643 | */ | |
3644 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3645 | if (PerlSIO_fflush(stdio) != 0) | |
3646 | return EOF; | |
3647 | } | |
f3be3723 BL |
3648 | for (;;) { |
3649 | c = PerlSIO_fgetc(stdio); | |
3650 | if (c != EOF) | |
3651 | break; | |
3652 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3653 | return EOF; | |
abf9167d DM |
3654 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3655 | return -1; | |
f3be3723 BL |
3656 | SETERRNO(0,0); |
3657 | } | |
93679785 NIS |
3658 | |
3659 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3660 | |
3661 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3662 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3663 | /* Fake ungetc() to the real buffer in case system's ungetc |
3664 | goes elsewhere | |
3665 | */ | |
3666 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3667 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3668 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3669 | if (ptr == base+1) { | |
3670 | *--ptr = (STDCHAR) c; | |
3671 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3672 | if (PerlSIO_feof(stdio)) | |
3673 | PerlSIO_clearerr(stdio); | |
3674 | return 0; | |
3675 | } | |
3676 | } | |
313e59c8 NIS |
3677 | else |
3678 | #endif | |
3679 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3680 | STDCHAR ch = c; |
3681 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3682 | return 0; | |
3683 | } | |
3684 | } | |
93679785 NIS |
3685 | #endif |
3686 | ||
93679785 | 3687 | /* If buffer snoop scheme above fails fall back to |
9f7cd136 | 3688 | using ungetc(). |
93679785 NIS |
3689 | */ |
3690 | if (PerlSIO_ungetc(c, stdio) != c) | |
3691 | return EOF; | |
5876737a | 3692 | |
93679785 NIS |
3693 | return 0; |
3694 | } | |
3695 | ||
3696 | ||
3697 | ||
27da23d5 | 3698 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3699 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3700 | "stdio", |
3701 | sizeof(PerlIOStdio), | |
86e05cf2 | 3702 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3703 | PerlIOStdio_pushed, |
2376d97d | 3704 | PerlIOBase_popped, |
14a5cf38 | 3705 | PerlIOStdio_open, |
86e05cf2 | 3706 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3707 | NULL, |
3708 | PerlIOStdio_fileno, | |
71200d45 | 3709 | PerlIOStdio_dup, |
14a5cf38 JH |
3710 | PerlIOStdio_read, |
3711 | PerlIOStdio_unread, | |
3712 | PerlIOStdio_write, | |
3713 | PerlIOStdio_seek, | |
3714 | PerlIOStdio_tell, | |
3715 | PerlIOStdio_close, | |
3716 | PerlIOStdio_flush, | |
3717 | PerlIOStdio_fill, | |
3718 | PerlIOStdio_eof, | |
3719 | PerlIOStdio_error, | |
3720 | PerlIOStdio_clearerr, | |
3721 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3722 | #ifdef FILE_base |
14a5cf38 JH |
3723 | PerlIOStdio_get_base, |
3724 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3725 | #else |
14a5cf38 JH |
3726 | NULL, |
3727 | NULL, | |
9e353e3b NIS |
3728 | #endif |
3729 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3730 | PerlIOStdio_get_ptr, |
3731 | PerlIOStdio_get_cnt, | |
15b61c98 | 3732 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3733 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3734 | # else |
3735 | NULL, | |
3736 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3737 | #else | |
3738 | NULL, | |
14a5cf38 JH |
3739 | NULL, |
3740 | NULL, | |
15b61c98 | 3741 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3742 | }; |
3743 | ||
b9d6bf13 JH |
3744 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3745 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3746 | FILE * |
81428673 | 3747 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3748 | { |
e87a358a | 3749 | dTHX; |
81428673 NIS |
3750 | FILE *stdio = NULL; |
3751 | if (PerlIOValid(f)) { | |
3752 | char buf[8]; | |
375ed12a JH |
3753 | int fd = PerlIO_fileno(f); |
3754 | if (fd < 0) { | |
3755 | return NULL; | |
3756 | } | |
81428673 NIS |
3757 | PerlIO_flush(f); |
3758 | if (!mode || !*mode) { | |
3759 | mode = PerlIO_modestr(f, buf); | |
3760 | } | |
3761 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3762 | if (stdio) { | |
3763 | PerlIOl *l = *f; | |
9f75cc58 | 3764 | PerlIO *f2; |
81428673 NIS |
3765 | /* De-link any lower layers so new :stdio sticks */ |
3766 | *f = NULL; | |
a0714e2c | 3767 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3768 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3769 | s->stdio = stdio; |
6b54a403 | 3770 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3771 | /* Link previous lower layers under new one */ |
3772 | *PerlIONext(f) = l; | |
3773 | } | |
3774 | else { | |
3775 | /* restore layers list */ | |
3776 | *f = l; | |
3777 | } | |
a33cf58c | 3778 | } |
14a5cf38 JH |
3779 | } |
3780 | return stdio; | |
9e353e3b NIS |
3781 | } |
3782 | ||
81428673 | 3783 | |
9e353e3b NIS |
3784 | FILE * |
3785 | PerlIO_findFILE(PerlIO *f) | |
3786 | { | |
14a5cf38 | 3787 | PerlIOl *l = *f; |
bbbc33d0 | 3788 | FILE *stdio; |
14a5cf38 JH |
3789 | while (l) { |
3790 | if (l->tab == &PerlIO_stdio) { | |
3791 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3792 | return s->stdio; | |
3793 | } | |
3794 | l = *PerlIONext(&l); | |
f7e7eb72 | 3795 | } |
4b069b44 | 3796 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3797 | /* However, we're not really exporting a FILE * to someone else (who |
3798 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3799 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3800 | descriptor. We have to do this, because if the loop above returns you |
3801 | the FILE *, then *it* didn't increase any reference count. So there's | |
3802 | only one way to be consistent. */ | |
3803 | stdio = PerlIO_exportFILE(f, NULL); | |
3804 | if (stdio) { | |
3805 | const int fd = fileno(stdio); | |
3806 | if (fd >= 0) | |
3807 | PerlIOUnix_refcnt_dec(fd); | |
3808 | } | |
3809 | return stdio; | |
9e353e3b NIS |
3810 | } |
3811 | ||
b9d6bf13 | 3812 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3813 | void |
3814 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3815 | { | |
22569500 NIS |
3816 | PerlIOl *l; |
3817 | while ((l = *p)) { | |
3818 | if (l->tab == &PerlIO_stdio) { | |
3819 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3820 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3821 | const int fd = fileno(f); |
3822 | if (fd >= 0) | |
3823 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3824 | { |
3825 | dTHX; | |
3826 | PerlIO_pop(aTHX_ p); | |
3827 | } | |
22569500 NIS |
3828 | return; |
3829 | } | |
3830 | } | |
3831 | p = PerlIONext(p); | |
3832 | } | |
3833 | return; | |
9e353e3b NIS |
3834 | } |
3835 | ||
3836 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3837 | /* |
71200d45 | 3838 | * perlio buffer layer |
14a5cf38 | 3839 | */ |
9e353e3b | 3840 | |
5e2ab84b | 3841 | IV |
2dc2558e | 3842 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3843 | { |
14a5cf38 | 3844 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3845 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3846 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3847 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3848 | } | |
4b069b44 | 3849 | if (*PerlIONext(f)) { |
de009b76 | 3850 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3851 | if (posn != (Off_t) - 1) { |
3852 | b->posn = posn; | |
3853 | } | |
14a5cf38 | 3854 | } |
2dc2558e | 3855 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3856 | } |
3857 | ||
9e353e3b | 3858 | PerlIO * |
14a5cf38 JH |
3859 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3860 | IV n, const char *mode, int fd, int imode, int perm, | |
3861 | PerlIO *f, int narg, SV **args) | |
3862 | { | |
04892f78 | 3863 | if (PerlIOValid(f)) { |
14a5cf38 | 3864 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3865 | PerlIO_funcs *tab = |
3866 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3867 | if (tab && tab->Open) | |
3868 | next = | |
3869 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3870 | next, narg, args); | |
2dc2558e | 3871 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3872 | return NULL; |
3873 | } | |
3874 | } | |
3875 | else { | |
04892f78 | 3876 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3877 | int init = 0; |
3b6c1aba | 3878 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3879 | init = 1; |
3880 | /* | |
71200d45 | 3881 | * mode++; |
14a5cf38 JH |
3882 | */ |
3883 | } | |
67363c0d JH |
3884 | if (tab && tab->Open) |
3885 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3886 | f, narg, args); | |
3887 | else | |
3888 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3889 | if (f) { |
22569500 | 3890 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3891 | /* |
3892 | * if push fails during open, open fails. close will pop us. | |
3893 | */ | |
3894 | PerlIO_close (f); | |
3895 | return NULL; | |
3896 | } else { | |
3897 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3898 | if (init && fd == 2) { |
3899 | /* | |
3900 | * Initial stderr is unbuffered | |
3901 | */ | |
3902 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3903 | } | |
23b84778 IZ |
3904 | #ifdef PERLIO_USING_CRLF |
3905 | # ifdef PERLIO_IS_BINMODE_FD | |
3906 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3907 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3908 | else |
3909 | # endif | |
3910 | /* | |
3911 | * do something about failing setmode()? --jhi | |
3912 | */ | |
3913 | PerlLIO_setmode(fd, O_BINARY); | |
3914 | #endif | |
8c8488cd | 3915 | #ifdef VMS |
8c8488cd CB |
3916 | /* Enable line buffering with record-oriented regular files |
3917 | * so we don't introduce an extraneous record boundary when | |
3918 | * the buffer fills up. | |
3919 | */ | |
3920 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3921 | Stat_t st; | |
3922 | if (PerlLIO_fstat(fd, &st) == 0 | |
3923 | && S_ISREG(st.st_mode) | |
3924 | && (st.st_fab_rfm == FAB$C_VAR | |
3925 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3926 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3927 | } | |
3928 | } | |
3929 | #endif | |
14a5cf38 JH |
3930 | } |
3931 | } | |
ee518936 | 3932 | } |
14a5cf38 | 3933 | return f; |
9e353e3b NIS |
3934 | } |
3935 | ||
14a5cf38 JH |
3936 | /* |
3937 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3938 | * read or write state. For write state, we put the postponed data through |
3939 | * the next layers. For read state, we seek() the next layers to the | |
3940 | * offset given by current position in the buffer, and discard the buffer | |
3941 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3942 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3943 | */ |
9e353e3b | 3944 | IV |
f62ce20a | 3945 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3946 | { |
dcda55fc | 3947 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3948 | int code = 0; |
04892f78 | 3949 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3950 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3951 | /* | |
71200d45 | 3952 | * write() the buffer |
14a5cf38 | 3953 | */ |
de009b76 AL |
3954 | const STDCHAR *buf = b->buf; |
3955 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3956 | while (p < b->ptr) { |
3957 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3958 | if (count > 0) { | |
3959 | p += count; | |
3960 | } | |
3961 | else if (count < 0 || PerlIO_error(n)) { | |
3962 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 3963 | PerlIO_save_errno(f); |
14a5cf38 JH |
3964 | code = -1; |
3965 | break; | |
3966 | } | |
3967 | } | |
3968 | b->posn += (p - buf); | |
3969 | } | |
3970 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3971 | STDCHAR *buf = PerlIO_get_base(f); | |
3972 | /* | |
71200d45 | 3973 | * Note position change |
14a5cf38 JH |
3974 | */ |
3975 | b->posn += (b->ptr - buf); | |
3976 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3977 | /* We did not consume all of it - try and seek downstream to |
3978 | our logical position | |
14a5cf38 | 3979 | */ |
4b069b44 | 3980 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3981 | /* Reload n as some layers may pop themselves on seek */ |
3982 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3983 | } |
ba5c3fe9 | 3984 | else { |
4b069b44 NIS |
3985 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3986 | data is lost for good - so return saying "ok" having undone | |
3987 | the position adjust | |
3988 | */ | |
3989 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3990 | return code; |
3991 | } | |
14a5cf38 JH |
3992 | } |
3993 | } | |
3994 | b->ptr = b->end = b->buf; | |
3995 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3996 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3997 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3998 | code = -1; |
3999 | return code; | |
6f9d8c32 NIS |
4000 | } |
4001 | ||
93c2c2ec IZ |
4002 | /* This discards the content of the buffer after b->ptr, and rereads |
4003 | * the buffer from the position off in the layer downstream; here off | |
4004 | * is at offset corresponding to b->ptr - b->buf. | |
4005 | */ | |
06da4f11 | 4006 | IV |
f62ce20a | 4007 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 4008 | { |
dcda55fc | 4009 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4010 | PerlIO *n = PerlIONext(f); |
4011 | SSize_t avail; | |
4012 | /* | |
4b069b44 NIS |
4013 | * Down-stream flush is defined not to loose read data so is harmless. |
4014 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 4015 | */ |
93c2c2ec | 4016 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
4017 | return -1; |
4018 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 4019 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
4020 | |
4021 | if (!b->buf) | |
22569500 | 4022 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 4023 | |
0f0eef27 | 4024 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4025 | |
14a5cf38 | 4026 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4027 | |
4028 | if (!PerlIOValid(n)) { | |
4029 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4030 | return -1; | |
4031 | } | |
4032 | ||
14a5cf38 JH |
4033 | if (PerlIO_fast_gets(n)) { |
4034 | /* | |
04892f78 | 4035 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4036 | * ->Read() because that will loop till it gets what we asked for |
4037 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4038 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4039 | */ |
4040 | avail = PerlIO_get_cnt(n); | |
4041 | if (avail <= 0) { | |
4042 | avail = PerlIO_fill(n); | |
4043 | if (avail == 0) | |
4044 | avail = PerlIO_get_cnt(n); | |
4045 | else { | |
4046 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4047 | avail = 0; | |
4048 | } | |
4049 | } | |
4050 | if (avail > 0) { | |
4051 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4052 | const SSize_t cnt = avail; |
eb160463 | 4053 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4054 | avail = b->bufsiz; |
4055 | Copy(ptr, b->buf, avail, STDCHAR); | |
4056 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4057 | } | |
4058 | } | |
4059 | else { | |
4060 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4061 | } | |
4062 | if (avail <= 0) { | |
4063 | if (avail == 0) | |
4064 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4065 | else | |
0ea86a10 | 4066 | { |
14a5cf38 | 4067 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
0ea86a10 FC |
4068 | PerlIO_save_errno(f); |
4069 | } | |
14a5cf38 JH |
4070 | return -1; |
4071 | } | |
4072 | b->end = b->buf + avail; | |
4073 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4074 | return 0; | |
06da4f11 NIS |
4075 | } |
4076 | ||
6f9d8c32 | 4077 | SSize_t |
f62ce20a | 4078 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4079 | { |
04892f78 | 4080 | if (PerlIOValid(f)) { |
dcda55fc | 4081 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4082 | if (!b->ptr) |
4083 | PerlIO_get_base(f); | |
f62ce20a | 4084 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4085 | } |
4086 | return 0; | |
6f9d8c32 NIS |
4087 | } |
4088 | ||
9e353e3b | 4089 | SSize_t |
f62ce20a | 4090 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4091 | { |
14a5cf38 | 4092 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4093 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4094 | SSize_t unread = 0; |
4095 | SSize_t avail; | |
4096 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4097 | PerlIO_flush(f); | |
4098 | if (!b->buf) | |
4099 | PerlIO_get_base(f); | |
4100 | if (b->buf) { | |
4101 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4102 | /* | |
4103 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4104 | * which have been read back to buffer start |
14a5cf38 JH |
4105 | */ |
4106 | avail = (b->ptr - b->buf); | |
4107 | } | |
4108 | else { | |
4109 | /* | |
4110 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4111 | * unread |
14a5cf38 JH |
4112 | */ |
4113 | avail = b->bufsiz; | |
4114 | b->end = b->buf + avail; | |
4115 | b->ptr = b->end; | |
4116 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4117 | /* | |
71200d45 | 4118 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4119 | */ |
4120 | b->posn -= b->bufsiz; | |
4121 | } | |
94e529cc | 4122 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4123 | /* |
71200d45 | 4124 | * If we have space for more than count, just move count |
14a5cf38 JH |
4125 | */ |
4126 | avail = count; | |
4127 | } | |
4128 | if (avail > 0) { | |
4129 | b->ptr -= avail; | |
4130 | buf -= avail; | |
4131 | /* | |
4132 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4133 | * there |
14a5cf38 JH |
4134 | */ |
4135 | if (buf != b->ptr) { | |
4136 | Copy(buf, b->ptr, avail, STDCHAR); | |
4137 | } | |
4138 | count -= avail; | |
4139 | unread += avail; | |
4140 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4141 | } | |
4142 | } | |
93679785 NIS |
4143 | if (count > 0) { |
4144 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4145 | } | |
14a5cf38 | 4146 | return unread; |
760ac839 LW |
4147 | } |
4148 | ||
9e353e3b | 4149 | SSize_t |
f62ce20a | 4150 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4151 | { |
de009b76 | 4152 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4153 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4154 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4155 | Size_t written = 0; |
4156 | if (!b->buf) | |
4157 | PerlIO_get_base(f); | |
4158 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4159 | return 0; | |
0678cb22 NIS |
4160 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4161 | if (PerlIO_flush(f) != 0) { | |
4162 | return 0; | |
4163 | } | |
4164 | } | |
ee56a6b9 CS |
4165 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4166 | flushptr = buf + count; | |
4167 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4168 | --flushptr; | |
4169 | } | |
14a5cf38 JH |
4170 | while (count > 0) { |
4171 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4172 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4173 | avail = count; |
ee56a6b9 CS |
4174 | if (flushptr > buf && flushptr <= buf + avail) |
4175 | avail = flushptr - buf; | |
14a5cf38 | 4176 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4177 | if (avail) { |
4178 | Copy(buf, b->ptr, avail, STDCHAR); | |
4179 | count -= avail; | |
4180 | buf += avail; | |
4181 | written += avail; | |
4182 | b->ptr += avail; | |
4183 | if (buf == flushptr) | |
4184 | PerlIO_flush(f); | |
14a5cf38 JH |
4185 | } |
4186 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4187 | if (PerlIO_flush(f) == -1) |
4188 | return -1; | |
14a5cf38 JH |
4189 | } |
4190 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4191 | PerlIO_flush(f); | |
4192 | return written; | |
9e353e3b NIS |
4193 | } |
4194 | ||
94a175e1 | 4195 | IV |
f62ce20a | 4196 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4197 | { |
14a5cf38 JH |
4198 | IV code; |
4199 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4200 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4201 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4202 | if (code == 0) { | |
de009b76 | 4203 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4204 | b->posn = PerlIO_tell(PerlIONext(f)); |
4205 | } | |
9e353e3b | 4206 | } |
14a5cf38 | 4207 | return code; |
9e353e3b NIS |
4208 | } |
4209 | ||
4210 | Off_t | |
f62ce20a | 4211 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4212 | { |
dcda55fc | 4213 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4214 | /* |
71200d45 | 4215 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4216 | */ |
4217 | Off_t posn = b->posn; | |
37725cdc | 4218 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4219 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4220 | #if 1 | |
4221 | /* As O_APPEND files are normally shared in some sense it is better | |
4222 | to flush : | |
4223 | */ | |
4224 | PerlIO_flush(f); | |
4225 | #else | |
37725cdc | 4226 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4227 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4228 | #endif | |
4229 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4230 | } | |
14a5cf38 JH |
4231 | if (b->buf) { |
4232 | /* | |
71200d45 | 4233 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4234 | */ |
4235 | posn += (b->ptr - b->buf); | |
4236 | } | |
4237 | return posn; | |
9e353e3b NIS |
4238 | } |
4239 | ||
4240 | IV | |
44798d05 NIS |
4241 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4242 | { | |
de009b76 AL |
4243 | const IV code = PerlIOBase_popped(aTHX_ f); |
4244 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4245 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4246 | Safefree(b->buf); | |
4247 | } | |
dcda55fc | 4248 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4249 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4250 | return code; | |
4251 | } | |
4252 | ||
4253 | IV | |
f62ce20a | 4254 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4255 | { |
de009b76 AL |
4256 | const IV code = PerlIOBase_close(aTHX_ f); |
4257 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4258 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4259 | Safefree(b->buf); |
14a5cf38 | 4260 | } |
dcda55fc | 4261 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4262 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4263 | return code; | |
760ac839 LW |
4264 | } |
4265 | ||
9e353e3b | 4266 | STDCHAR * |
f62ce20a | 4267 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4268 | { |
dcda55fc | 4269 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4270 | if (!b->buf) |
4271 | PerlIO_get_base(f); | |
4272 | return b->ptr; | |
9e353e3b NIS |
4273 | } |
4274 | ||
05d1247b | 4275 | SSize_t |
f62ce20a | 4276 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4277 | { |
dcda55fc | 4278 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4279 | if (!b->buf) |
4280 | PerlIO_get_base(f); | |
4281 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4282 | return (b->end - b->ptr); | |
4283 | return 0; | |
9e353e3b NIS |
4284 | } |
4285 | ||
4286 | STDCHAR * | |
f62ce20a | 4287 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4288 | { |
dcda55fc | 4289 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4290 | PERL_UNUSED_CONTEXT; |
4291 | ||
14a5cf38 JH |
4292 | if (!b->buf) { |
4293 | if (!b->bufsiz) | |
1810cd7c | 4294 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
d09f14bf | 4295 | Newx(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4296 | if (!b->buf) { |
4297 | b->buf = (STDCHAR *) & b->oneword; | |
4298 | b->bufsiz = sizeof(b->oneword); | |
4299 | } | |
dcda55fc | 4300 | b->end = b->ptr = b->buf; |
06da4f11 | 4301 | } |
14a5cf38 | 4302 | return b->buf; |
9e353e3b NIS |
4303 | } |
4304 | ||
4305 | Size_t | |
f62ce20a | 4306 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4307 | { |
dcda55fc | 4308 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4309 | if (!b->buf) |
4310 | PerlIO_get_base(f); | |
4311 | return (b->end - b->buf); | |
9e353e3b NIS |
4312 | } |
4313 | ||
4314 | void | |
f62ce20a | 4315 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4316 | { |
dcda55fc | 4317 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4318 | #ifndef DEBUGGING |
4319 | PERL_UNUSED_ARG(cnt); | |
4320 | #endif | |
14a5cf38 JH |
4321 | if (!b->buf) |
4322 | PerlIO_get_base(f); | |
4323 | b->ptr = ptr; | |
b727803b RGS |
4324 | assert(PerlIO_get_cnt(f) == cnt); |
4325 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4326 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4327 | } |
4328 | ||
71200d45 | 4329 | PerlIO * |
ecdeb87c | 4330 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4331 | { |
ecdeb87c | 4332 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4333 | } |
4334 | ||
4335 | ||
4336 | ||
27da23d5 | 4337 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4338 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4339 | "perlio", |
4340 | sizeof(PerlIOBuf), | |
86e05cf2 | 4341 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4342 | PerlIOBuf_pushed, |
44798d05 | 4343 | PerlIOBuf_popped, |
14a5cf38 | 4344 | PerlIOBuf_open, |
86e05cf2 | 4345 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4346 | NULL, |
4347 | PerlIOBase_fileno, | |
71200d45 | 4348 | PerlIOBuf_dup, |
14a5cf38 JH |
4349 | PerlIOBuf_read, |
4350 | PerlIOBuf_unread, | |
4351 | PerlIOBuf_write, | |
4352 | PerlIOBuf_seek, | |
4353 | PerlIOBuf_tell, | |
4354 | PerlIOBuf_close, | |
4355 | PerlIOBuf_flush, | |
4356 | PerlIOBuf_fill, | |
4357 | PerlIOBase_eof, | |
4358 | PerlIOBase_error, | |
4359 | PerlIOBase_clearerr, | |
4360 | PerlIOBase_setlinebuf, | |
4361 | PerlIOBuf_get_base, | |
4362 | PerlIOBuf_bufsiz, | |
4363 | PerlIOBuf_get_ptr, | |
4364 | PerlIOBuf_get_cnt, | |
4365 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4366 | }; |
4367 | ||
66ecd56b | 4368 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4369 | /* |
71200d45 | 4370 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4371 | */ |
5e2ab84b NIS |
4372 | |
4373 | IV | |
f62ce20a | 4374 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4375 | { |
14a5cf38 | 4376 | /* |
71200d45 | 4377 | * Should never happen |
14a5cf38 JH |
4378 | */ |
4379 | PerlIO_flush(f); | |
4380 | return 0; | |
5e2ab84b NIS |
4381 | } |
4382 | ||
4383 | IV | |
f62ce20a | 4384 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4385 | { |
14a5cf38 | 4386 | /* |
71200d45 | 4387 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4388 | */ |
4389 | PerlIO_flush(f); | |
4390 | return PerlIO_close(f); | |
5e2ab84b NIS |
4391 | } |
4392 | ||
94a175e1 | 4393 | IV |
f62ce20a | 4394 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4395 | { |
14a5cf38 | 4396 | /* |
71200d45 | 4397 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4398 | */ |
4399 | PerlIO_flush(f); | |
4400 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4401 | } |
4402 | ||
4403 | ||
4404 | IV | |
f62ce20a | 4405 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4406 | { |
dcda55fc | 4407 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4408 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4409 | Safefree(b->buf); |
14a5cf38 JH |
4410 | b->buf = NULL; |
4411 | } | |
4412 | PerlIO_pop(aTHX_ f); | |
4413 | return 0; | |
5e2ab84b NIS |
4414 | } |
4415 | ||
4416 | void | |
f62ce20a | 4417 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4418 | { |
14a5cf38 JH |
4419 | if (cnt <= 0) { |
4420 | PerlIO_flush(f); | |
4421 | } | |
4422 | else { | |
f62ce20a | 4423 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4424 | } |
5e2ab84b NIS |
4425 | } |
4426 | ||
4427 | IV | |
2dc2558e | 4428 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4429 | { |
de009b76 | 4430 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4431 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4432 | /* |
71200d45 NIS |
4433 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4434 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4435 | */ |
4436 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4437 | (PerlIOBase(PerlIONext(f))-> | |
4438 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4439 | return code; | |
5e2ab84b NIS |
4440 | } |
4441 | ||
4442 | SSize_t | |
f62ce20a | 4443 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4444 | { |
14a5cf38 JH |
4445 | SSize_t avail = PerlIO_get_cnt(f); |
4446 | SSize_t got = 0; | |
94e529cc | 4447 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4448 | avail = count; |
4449 | if (avail > 0) | |
f62ce20a | 4450 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4451 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4452 | const SSize_t more = |
14a5cf38 JH |
4453 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4454 | if (more >= 0 || got == 0) | |
4455 | got += more; | |
4456 | } | |
4457 | return got; | |
5e2ab84b NIS |
4458 | } |
4459 | ||
27da23d5 | 4460 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4461 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4462 | "pending", |
4463 | sizeof(PerlIOBuf), | |
86e05cf2 | 4464 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4465 | PerlIOPending_pushed, |
44798d05 | 4466 | PerlIOBuf_popped, |
14a5cf38 | 4467 | NULL, |
86e05cf2 | 4468 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4469 | NULL, |
4470 | PerlIOBase_fileno, | |
71200d45 | 4471 | PerlIOBuf_dup, |
14a5cf38 JH |
4472 | PerlIOPending_read, |
4473 | PerlIOBuf_unread, | |
4474 | PerlIOBuf_write, | |
4475 | PerlIOPending_seek, | |
4476 | PerlIOBuf_tell, | |
4477 | PerlIOPending_close, | |
4478 | PerlIOPending_flush, | |
4479 | PerlIOPending_fill, | |
4480 | PerlIOBase_eof, | |
4481 | PerlIOBase_error, | |
4482 | PerlIOBase_clearerr, | |
4483 | PerlIOBase_setlinebuf, | |
4484 | PerlIOBuf_get_base, | |
4485 | PerlIOBuf_bufsiz, | |
4486 | PerlIOBuf_get_ptr, | |
4487 | PerlIOBuf_get_cnt, | |
4488 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4489 | }; |
4490 | ||
4491 | ||
4492 | ||
4493 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4494 | /* |
4495 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4496 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4497 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4498 | * |
4499 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4500 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4501 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4502 | * that it ends at c->nl; these two cases can be distinguished by | |
4503 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4504 | * _unread() and _flush() calls. | |
4505 | * It only matters for read operations. | |
66ecd56b NIS |
4506 | */ |
4507 | ||
14a5cf38 | 4508 | typedef struct { |
22569500 NIS |
4509 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4510 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4511 | * buffer */ |
99efab12 NIS |
4512 | } PerlIOCrlf; |
4513 | ||
ff1e3883 JD |
4514 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4515 | * Otherwise the :crlf layer would always revert back to | |
4516 | * raw mode. | |
4517 | */ | |
4518 | static void | |
4519 | S_inherit_utf8_flag(PerlIO *f) | |
4520 | { | |
4521 | PerlIO *g = PerlIONext(f); | |
4522 | if (PerlIOValid(g)) { | |
4523 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4524 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4525 | } | |
4526 | } | |
4527 | } | |
4528 | ||
f5b9d040 | 4529 | IV |
2dc2558e | 4530 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4531 | { |
14a5cf38 JH |
4532 | IV code; |
4533 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4534 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4535 | #if 0 |
e17bc05a | 4536 | DEBUG_i( |
14a5cf38 | 4537 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4538 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4539 | PerlIOBase(f)->flags); |
e17bc05a | 4540 | ); |
5e2ab84b | 4541 | #endif |
8229d19f | 4542 | { |
5da08ab0 LT |
4543 | /* If the old top layer is a CRLF layer, reactivate it (if |
4544 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4545 | PerlIO *g = PerlIONext(f); |
7826b36f | 4546 | if (PerlIOValid(g)) { |
8229d19f JH |
4547 | PerlIOl *b = PerlIOBase(g); |
4548 | if (b && b->tab == &PerlIO_crlf) { | |
4549 | if (!(b->flags & PERLIO_F_CRLF)) | |
4550 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4551 | S_inherit_utf8_flag(g); |
8229d19f JH |
4552 | PerlIO_pop(aTHX_ f); |
4553 | return code; | |
7826b36f | 4554 | } |
8229d19f JH |
4555 | } |
4556 | } | |
ff1e3883 | 4557 | S_inherit_utf8_flag(f); |
14a5cf38 | 4558 | return code; |
f5b9d040 NIS |
4559 | } |
4560 | ||
4561 | ||
99efab12 | 4562 | SSize_t |
f62ce20a | 4563 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4564 | { |
dcda55fc | 4565 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4566 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4567 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4568 | c->nl = NULL; |
4569 | } | |
4570 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4571 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4572 | else { |
4573 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4574 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4575 | SSize_t unread = 0; | |
4576 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4577 | PerlIO_flush(f); | |
4578 | if (!b->buf) | |
4579 | PerlIO_get_base(f); | |
4580 | if (b->buf) { | |
4581 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4582 | b->end = b->ptr = b->buf + b->bufsiz; | |
4583 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4584 | b->posn -= b->bufsiz; | |
4585 | } | |
4586 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4587 | const int ch = *--buf; |
14a5cf38 JH |
4588 | if (ch == '\n') { |
4589 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4590 | *--(b->ptr) = NATIVE_0xa; |
4591 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4592 | unread++; |
4593 | count--; | |
4594 | } | |
4595 | else { | |
93c2c2ec | 4596 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4597 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4598 | '\r' */ | |
93c2c2ec IZ |
4599 | unread++; |
4600 | count--; | |
14a5cf38 JH |
4601 | } |
4602 | } | |
4603 | else { | |
4604 | *--(b->ptr) = ch; | |
4605 | unread++; | |
4606 | count--; | |
4607 | } | |
4608 | } | |
4609 | } | |
ec1da995 LT |
4610 | if (count > 0) |
4611 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4612 | return unread; |
4613 | } | |
99efab12 NIS |
4614 | } |
4615 | ||
93c2c2ec | 4616 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4617 | SSize_t |
f62ce20a | 4618 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4619 | { |
dcda55fc | 4620 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4621 | if (!b->buf) |
4622 | PerlIO_get_base(f); | |
4623 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4624 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4625 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4626 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4627 | scan: |
76e6dc3a | 4628 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4629 | nl++; |
76e6dc3a | 4630 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4631 | test: |
4632 | if (nl + 1 < b->end) { | |
76e6dc3a | 4633 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4634 | *nl = '\n'; |
4635 | c->nl = nl; | |
4636 | } | |
4637 | else { | |
4638 | /* | |
71200d45 | 4639 | * Not CR,LF but just CR |
14a5cf38 JH |
4640 | */ |
4641 | nl++; | |
4642 | goto scan; | |
4643 | } | |
4644 | } | |
4645 | else { | |
4646 | /* | |
71200d45 | 4647 | * Blast - found CR as last char in buffer |
14a5cf38 | 4648 | */ |
e87a358a | 4649 | |
14a5cf38 JH |
4650 | if (b->ptr < nl) { |
4651 | /* | |
4652 | * They may not care, defer work as long as | |
71200d45 | 4653 | * possible |
14a5cf38 | 4654 | */ |
a0d1d361 | 4655 | c->nl = nl; |
14a5cf38 JH |
4656 | return (nl - b->ptr); |
4657 | } | |
4658 | else { | |
4659 | int code; | |
22569500 | 4660 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4661 | * flush() is concerned */ |
22569500 | 4662 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4663 | /* Note as we have moved buf up flush's |
4664 | posn += ptr-buf | |
4665 | will naturally make posn point at CR | |
4666 | */ | |
22569500 NIS |
4667 | b->bufsiz--; /* Buffer is thus smaller */ |
4668 | code = PerlIO_fill(f); /* Fetch some more */ | |
4669 | b->bufsiz++; /* Restore size for next time */ | |
4670 | b->buf--; /* Point at space */ | |
4671 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4672 | * off */ |
76e6dc3a | 4673 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4674 | if (code == 0) |
22569500 | 4675 | goto test; /* fill() call worked */ |
14a5cf38 | 4676 | /* |
71200d45 | 4677 | * CR at EOF - just fall through |
14a5cf38 | 4678 | */ |
a0d1d361 | 4679 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4680 | } |
4681 | } | |
4682 | } | |
4683 | } | |
4684 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4685 | } | |
4686 | return 0; | |
99efab12 NIS |
4687 | } |
4688 | ||
4689 | void | |
f62ce20a | 4690 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4691 | { |
dcda55fc AL |
4692 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4693 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4694 | if (!b->buf) |
4695 | PerlIO_get_base(f); | |
4696 | if (!ptr) { | |
a0d1d361 | 4697 | if (c->nl) { |
14a5cf38 | 4698 | ptr = c->nl + 1; |
76e6dc3a | 4699 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4700 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4701 | ptr--; |
4702 | } | |
4703 | } | |
14a5cf38 JH |
4704 | else { |
4705 | ptr = b->end; | |
14a5cf38 JH |
4706 | } |
4707 | ptr -= cnt; | |
4708 | } | |
4709 | else { | |
6f207bd3 | 4710 | NOOP; |
3b4bd3fd | 4711 | #if 0 |
14a5cf38 | 4712 | /* |
71200d45 | 4713 | * Test code - delete when it works ... |
14a5cf38 | 4714 | */ |
3b4bd3fd | 4715 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4716 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4717 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4718 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4719 | chk--; |
22569500 | 4720 | } |
14a5cf38 JH |
4721 | chk -= cnt; |
4722 | ||
a0d1d361 | 4723 | if (ptr != chk ) { |
99ef548b | 4724 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4725 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4726 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4727 | } |
99ef548b | 4728 | #endif |
14a5cf38 JH |
4729 | } |
4730 | if (c->nl) { | |
4731 | if (ptr > c->nl) { | |
4732 | /* | |
71200d45 | 4733 | * They have taken what we lied about |
14a5cf38 | 4734 | */ |
76e6dc3a | 4735 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4736 | c->nl = NULL; |
4737 | ptr++; | |
4738 | } | |
4739 | } | |
4740 | b->ptr = ptr; | |
4741 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4742 | } |
4743 | ||
4744 | SSize_t | |
f62ce20a | 4745 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4746 | { |
14a5cf38 | 4747 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4748 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4749 | else { |
dcda55fc | 4750 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4751 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4752 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4753 | if (!b->buf) |
4754 | PerlIO_get_base(f); | |
4755 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4756 | return 0; | |
4757 | while (buf < ebuf) { | |
dcda55fc | 4758 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4759 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4760 | while (buf < ebuf && b->ptr < eptr) { | |
4761 | if (*buf == '\n') { | |
4762 | if ((b->ptr + 2) > eptr) { | |
4763 | /* | |
71200d45 | 4764 | * Not room for both |
14a5cf38 JH |
4765 | */ |
4766 | PerlIO_flush(f); | |
4767 | break; | |
4768 | } | |
4769 | else { | |
76e6dc3a KW |
4770 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4771 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4772 | buf++; |
4773 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4774 | PerlIO_flush(f); | |
4775 | break; | |
4776 | } | |
4777 | } | |
4778 | } | |
4779 | else { | |
dcda55fc | 4780 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4781 | } |
4782 | if (b->ptr >= eptr) { | |
4783 | PerlIO_flush(f); | |
4784 | break; | |
4785 | } | |
4786 | } | |
4787 | } | |
4788 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4789 | PerlIO_flush(f); | |
4790 | return (buf - (STDCHAR *) vbuf); | |
4791 | } | |
99efab12 NIS |
4792 | } |
4793 | ||
4794 | IV | |
f62ce20a | 4795 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4796 | { |
dcda55fc | 4797 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4798 | if (c->nl) { |
76e6dc3a | 4799 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4800 | c->nl = NULL; |
4801 | } | |
f62ce20a | 4802 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4803 | } |
4804 | ||
86e05cf2 NIS |
4805 | IV |
4806 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4807 | { | |
4808 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4809 | /* In text mode - flush any pending stuff and flip it */ | |
4810 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4811 | #ifndef PERLIO_USING_CRLF | |
4812 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4813 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4814 | #endif |
4815 | } | |
4816 | return 0; | |
4817 | } | |
4818 | ||
27da23d5 | 4819 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4820 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4821 | "crlf", |
4822 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4823 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4824 | PerlIOCrlf_pushed, |
44798d05 | 4825 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4826 | PerlIOBuf_open, |
86e05cf2 | 4827 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4828 | NULL, |
4829 | PerlIOBase_fileno, | |
71200d45 | 4830 | PerlIOBuf_dup, |
de009b76 | 4831 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4832 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4833 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4834 | PerlIOBuf_seek, |
4835 | PerlIOBuf_tell, | |
4836 | PerlIOBuf_close, | |
4837 | PerlIOCrlf_flush, | |
4838 | PerlIOBuf_fill, | |
4839 | PerlIOBase_eof, | |
4840 | PerlIOBase_error, | |
4841 | PerlIOBase_clearerr, | |
4842 | PerlIOBase_setlinebuf, | |
4843 | PerlIOBuf_get_base, | |
4844 | PerlIOBuf_bufsiz, | |
4845 | PerlIOBuf_get_ptr, | |
4846 | PerlIOCrlf_get_cnt, | |
4847 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4848 | }; |
4849 | ||
9e353e3b | 4850 | PerlIO * |
e87a358a | 4851 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4852 | { |
a1ea730d | 4853 | if (!PL_perlio) { |
14a5cf38 JH |
4854 | PerlIO_stdstreams(aTHX); |
4855 | } | |
303f2dc3 | 4856 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4857 | } |
4858 | ||
9e353e3b | 4859 | PerlIO * |
e87a358a | 4860 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4861 | { |
a1ea730d | 4862 | if (!PL_perlio) { |
14a5cf38 JH |
4863 | PerlIO_stdstreams(aTHX); |
4864 | } | |
303f2dc3 | 4865 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4866 | } |
4867 | ||
9e353e3b | 4868 | PerlIO * |
e87a358a | 4869 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4870 | { |
a1ea730d | 4871 | if (!PL_perlio) { |
14a5cf38 JH |
4872 | PerlIO_stdstreams(aTHX); |
4873 | } | |
303f2dc3 | 4874 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4875 | } |
4876 | ||
4877 | /*--------------------------------------------------------------------------------------*/ | |
4878 | ||
9e353e3b NIS |
4879 | char * |
4880 | PerlIO_getname(PerlIO *f, char *buf) | |
4881 | { | |
a15cef0c | 4882 | #ifdef VMS |
dbf7dff6 | 4883 | dTHX; |
73d840c0 | 4884 | char *name = NULL; |
7659f319 | 4885 | bool exported = FALSE; |
14a5cf38 | 4886 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4887 | if (!stdio) { |
4888 | stdio = PerlIO_exportFILE(f,0); | |
4889 | exported = TRUE; | |
4890 | } | |
4891 | if (stdio) { | |
14a5cf38 | 4892 | name = fgetname(stdio, buf); |
7659f319 CB |
4893 | if (exported) PerlIO_releaseFILE(f,stdio); |
4894 | } | |
73d840c0 | 4895 | return name; |
a15cef0c | 4896 | #else |
8772537c AL |
4897 | PERL_UNUSED_ARG(f); |
4898 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4899 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4900 | return NULL; |
a15cef0c | 4901 | #endif |
9e353e3b NIS |
4902 | } |
4903 | ||
4904 | ||
4905 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4906 | /* |
4907 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4908 | * terms of above |
14a5cf38 | 4909 | */ |
9e353e3b | 4910 | |
e87a358a NIS |
4911 | #undef PerlIO_fdopen |
4912 | PerlIO * | |
4913 | PerlIO_fdopen(int fd, const char *mode) | |
4914 | { | |
4915 | dTHX; | |
bd61b366 | 4916 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4917 | } |
4918 | ||
4919 | #undef PerlIO_open | |
4920 | PerlIO * | |
4921 | PerlIO_open(const char *path, const char *mode) | |
4922 | { | |
4923 | dTHX; | |
42d9b98d | 4924 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4925 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4926 | } |
4927 | ||
4928 | #undef Perlio_reopen | |
4929 | PerlIO * | |
4930 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4931 | { | |
4932 | dTHX; | |
42d9b98d | 4933 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4934 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4935 | } |
4936 | ||
9e353e3b | 4937 | #undef PerlIO_getc |
6f9d8c32 | 4938 | int |
9e353e3b | 4939 | PerlIO_getc(PerlIO *f) |
760ac839 | 4940 | { |
e87a358a | 4941 | dTHX; |
14a5cf38 | 4942 | STDCHAR buf[1]; |
de009b76 | 4943 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4944 | return (unsigned char) buf[0]; |
4945 | } | |
4946 | return EOF; | |
313ca112 NIS |
4947 | } |
4948 | ||
4949 | #undef PerlIO_ungetc | |
4950 | int | |
4951 | PerlIO_ungetc(PerlIO *f, int ch) | |
4952 | { | |
e87a358a | 4953 | dTHX; |
14a5cf38 JH |
4954 | if (ch != EOF) { |
4955 | STDCHAR buf = ch; | |
4956 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4957 | return ch; | |
4958 | } | |
4959 | return EOF; | |
760ac839 LW |
4960 | } |
4961 | ||
9e353e3b NIS |
4962 | #undef PerlIO_putc |
4963 | int | |
4964 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4965 | { |
e87a358a | 4966 | dTHX; |
14a5cf38 JH |
4967 | STDCHAR buf = ch; |
4968 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4969 | } |
4970 | ||
9e353e3b | 4971 | #undef PerlIO_puts |
760ac839 | 4972 | int |
9e353e3b | 4973 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4974 | { |
e87a358a | 4975 | dTHX; |
dcda55fc | 4976 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4977 | } |
4978 | ||
4979 | #undef PerlIO_rewind | |
4980 | void | |
c78749f2 | 4981 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4982 | { |
e87a358a | 4983 | dTHX; |
14a5cf38 JH |
4984 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4985 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4986 | } |
4987 | ||
4988 | #undef PerlIO_vprintf | |
4989 | int | |
4990 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4991 | { | |
14a5cf38 | 4992 | dTHX; |
53ce71d3 | 4993 | SV * sv; |
b83604b4 | 4994 | const char *s; |
14a5cf38 JH |
4995 | STRLEN len; |
4996 | SSize_t wrote; | |
2cc61e15 | 4997 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4998 | va_list apc; |
4999 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5000 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 5001 | va_end(apc); |
2cc61e15 | 5002 | #else |
53ce71d3 | 5003 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5004 | #endif |
b83604b4 | 5005 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5006 | wrote = PerlIO_write(f, s, len); |
5007 | SvREFCNT_dec(sv); | |
5008 | return wrote; | |
760ac839 LW |
5009 | } |
5010 | ||
5011 | #undef PerlIO_printf | |
6f9d8c32 | 5012 | int |
14a5cf38 | 5013 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5014 | { |
14a5cf38 JH |
5015 | va_list ap; |
5016 | int result; | |
5017 | va_start(ap, fmt); | |
5018 | result = PerlIO_vprintf(f, fmt, ap); | |
5019 | va_end(ap); | |
5020 | return result; | |
760ac839 LW |
5021 | } |
5022 | ||
5023 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5024 | int |
14a5cf38 | 5025 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5026 | { |
e87a358a | 5027 | dTHX; |
14a5cf38 JH |
5028 | va_list ap; |
5029 | int result; | |
5030 | va_start(ap, fmt); | |
5031 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5032 | va_end(ap); | |
5033 | return result; | |
760ac839 LW |
5034 | } |
5035 | ||
5036 | #undef PerlIO_tmpfile | |
5037 | PerlIO * | |
c78749f2 | 5038 | PerlIO_tmpfile(void) |
760ac839 | 5039 | { |
dbf7dff6 | 5040 | #ifndef WIN32 |
2941a2e1 | 5041 | dTHX; |
dbf7dff6 | 5042 | #endif |
2941a2e1 | 5043 | PerlIO *f = NULL; |
2941a2e1 | 5044 | #ifdef WIN32 |
de009b76 | 5045 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5046 | if (fd >= 0) |
5047 | f = PerlIO_fdopen(fd, "w+b"); | |
d333cbeb | 5048 | #elif ! defined(VMS) && ! defined(OS2) |
0b99e986 RGS |
5049 | int fd = -1; |
5050 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 5051 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 5052 | SV * sv = NULL; |
e57270be | 5053 | int old_umask = umask(0177); |
7299ca58 | 5054 | if (tmpdir && *tmpdir) { |
0b99e986 | 5055 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5056 | sv = newSVpv(tmpdir, 0); |
0b99e986 | 5057 | sv_catpv(sv, tempname + 4); |
884fc2d3 | 5058 | fd = Perl_my_mkstemp_cloexec(SvPVX(sv)); |
0b99e986 RGS |
5059 | } |
5060 | if (fd < 0) { | |
e40f8e80 | 5061 | SvREFCNT_dec(sv); |
7299ca58 | 5062 | sv = NULL; |
0b99e986 | 5063 | /* else we try /tmp */ |
884fc2d3 | 5064 | fd = Perl_my_mkstemp_cloexec(tempname); |
0b99e986 | 5065 | } |
b7561fc9 BF |
5066 | if (fd < 0) { |
5067 | /* Try cwd */ | |
5068 | sv = newSVpvs("."); | |
5069 | sv_catpv(sv, tempname + 4); | |
884fc2d3 | 5070 | fd = Perl_my_mkstemp_cloexec(SvPVX(sv)); |
b7561fc9 | 5071 | } |
60f7fc1e | 5072 | umask(old_umask); |
2941a2e1 JH |
5073 | if (fd >= 0) { |
5074 | f = PerlIO_fdopen(fd, "w+"); | |
5075 | if (f) | |
5076 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
0b99e986 | 5077 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
2941a2e1 | 5078 | } |
ef8d46e8 | 5079 | SvREFCNT_dec(sv); |
faf55891 | 5080 | #else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5081 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5082 | |
085e731f CB |
5083 | if (stdio) |
5084 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5085 | ||
2941a2e1 JH |
5086 | #endif /* else WIN32 */ |
5087 | return f; | |
760ac839 LW |
5088 | } |
5089 | ||
0ea86a10 FC |
5090 | void |
5091 | Perl_PerlIO_save_errno(pTHX_ PerlIO *f) | |
5092 | { | |
e9b8343f | 5093 | PERL_UNUSED_CONTEXT; |
0ea86a10 FC |
5094 | if (!PerlIOValid(f)) |
5095 | return; | |
5096 | PerlIOBase(f)->err = errno; | |
5097 | #ifdef VMS | |
5098 | PerlIOBase(f)->os_err = vaxc$errno; | |
5099 | #elif defined(OS2) | |
5100 | PerlIOBase(f)->os_err = Perl_rc; | |
5101 | #elif defined(WIN32) | |
5102 | PerlIOBase(f)->os_err = GetLastError(); | |
5103 | #endif | |
5104 | } | |
5105 | ||
5106 | void | |
5107 | Perl_PerlIO_restore_errno(pTHX_ PerlIO *f) | |
5108 | { | |
e9b8343f | 5109 | PERL_UNUSED_CONTEXT; |
0ea86a10 FC |
5110 | if (!PerlIOValid(f)) |
5111 | return; | |
5112 | SETERRNO(PerlIOBase(f)->err, PerlIOBase(f)->os_err); | |
5113 | #ifdef OS2 | |
5114 | Perl_rc = PerlIOBase(f)->os_err); | |
5115 | #elif defined(WIN32) | |
5116 | SetLastError(PerlIOBase(f)->os_err); | |
5117 | #endif | |
5118 | } | |
5119 | ||
6f9d8c32 NIS |
5120 | #undef HAS_FSETPOS |
5121 | #undef HAS_FGETPOS | |
5122 | ||
760ac839 | 5123 | |
9e353e3b | 5124 | /*======================================================================================*/ |
14a5cf38 | 5125 | /* |
71200d45 NIS |
5126 | * Now some functions in terms of above which may be needed even if we are |
5127 | * not in true PerlIO mode | |
9e353e3b | 5128 | */ |
188f0c84 YO |
5129 | const char * |
5130 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5131 | { | |
8b850bd5 NC |
5132 | const char *direction = NULL; |
5133 | SV *layers; | |
188f0c84 YO |
5134 | /* |
5135 | * Need to supply default layer info from open.pm | |
5136 | */ | |
8b850bd5 NC |
5137 | |
5138 | if (!PL_curcop) | |
5139 | return NULL; | |
5140 | ||
5141 | if (mode && mode[0] != 'r') { | |
5142 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5143 | direction = "open>"; | |
5144 | } else { | |
5145 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5146 | direction = "open<"; | |
188f0c84 | 5147 | } |
8b850bd5 NC |
5148 | if (!direction) |
5149 | return NULL; | |
5150 | ||
20439bc7 | 5151 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5152 | |
5153 | assert(layers); | |
5154 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5155 | } |
5156 | ||
9e353e3b | 5157 | |
760ac839 LW |
5158 | #ifndef HAS_FSETPOS |
5159 | #undef PerlIO_setpos | |
5160 | int | |
766a733e | 5161 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5162 | { |
14a5cf38 | 5163 | if (SvOK(pos)) { |
e1a83e70 DD |
5164 | if (f) { |
5165 | dTHX; | |
5166 | STRLEN len; | |
5167 | const Off_t * const posn = (Off_t *) SvPV(pos, len); | |
5168 | if(len == sizeof(Off_t)) | |
5169 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5170 | } | |
14a5cf38 | 5171 | } |
93189314 | 5172 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5173 | return -1; |
760ac839 | 5174 | } |
c411622e | 5175 | #else |
c411622e | 5176 | #undef PerlIO_setpos |
5177 | int | |
766a733e | 5178 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5179 | { |
14a5cf38 | 5180 | if (SvOK(pos)) { |
e1a83e70 DD |
5181 | if (f) { |
5182 | dTHX; | |
5183 | STRLEN len; | |
5184 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); | |
5185 | if(len == sizeof(Fpos_t)) | |
2d4389e4 | 5186 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
e1a83e70 | 5187 | return fsetpos64(f, fpos); |
d9b3e12d | 5188 | #else |
e1a83e70 | 5189 | return fsetpos(f, fpos); |
d9b3e12d | 5190 | #endif |
14a5cf38 | 5191 | } |
766a733e | 5192 | } |
93189314 | 5193 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5194 | return -1; |
c411622e | 5195 | } |
5196 | #endif | |
760ac839 LW |
5197 | |
5198 | #ifndef HAS_FGETPOS | |
5199 | #undef PerlIO_getpos | |
5200 | int | |
766a733e | 5201 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5202 | { |
14a5cf38 JH |
5203 | dTHX; |
5204 | Off_t posn = PerlIO_tell(f); | |
5205 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5206 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5207 | } |
c411622e | 5208 | #else |
c411622e | 5209 | #undef PerlIO_getpos |
5210 | int | |
766a733e | 5211 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5212 | { |
14a5cf38 JH |
5213 | dTHX; |
5214 | Fpos_t fpos; | |
5215 | int code; | |
2d4389e4 | 5216 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5217 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5218 | #else |
14a5cf38 | 5219 | code = fgetpos(f, &fpos); |
d9b3e12d | 5220 | #endif |
14a5cf38 JH |
5221 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5222 | return code; | |
c411622e | 5223 | } |
5224 | #endif | |
760ac839 | 5225 | |
db6e00bd DD |
5226 | /* print a failure format string message to stderr and fail exit the process |
5227 | using only libc without depending on any perl data structures being | |
5228 | initialized. | |
5229 | */ | |
5230 | ||
5231 | void | |
5232 | Perl_noperl_die(const char* pat, ...) | |
5233 | { | |
5234 | va_list(arglist); | |
5235 | PERL_ARGS_ASSERT_NOPERL_DIE; | |
5236 | va_start(arglist, pat); | |
5237 | vfprintf(stderr, pat, arglist); | |
5238 | va_end(arglist); | |
5239 | exit(1); | |
5240 | } | |
5241 | ||
9cfa90c0 | 5242 | /* |
14d04a33 | 5243 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5244 | */ |