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 | 373 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
048eef38 TC |
374 | # ifdef USE_QUADMATH |
375 | # ifdef HAS_VSNPRINTF | |
376 | /* my_vsnprintf() isn't available with quadmath, but the native vsnprintf() | |
377 | should be, otherwise the system isn't likely to support quadmath. | |
378 | Nothing should be calling PerlIO_debug() with floating point anyway. | |
379 | */ | |
380 | const STRLEN len2 = vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
381 | # else | |
382 | STATIC_ASSERT_STMT(0); | |
383 | # endif | |
384 | # else | |
1208b3dd | 385 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); |
048eef38 | 386 | # endif |
b469f1e0 | 387 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2)); |
70ace5da | 388 | #else |
dcda55fc AL |
389 | const char *s = CopFILE(PL_curcop); |
390 | STRLEN len; | |
550e2ce0 NC |
391 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" IVdf " ", s ? s : "(none)", |
392 | (IV) CopLINE(PL_curcop)); | |
14a5cf38 JH |
393 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
394 | ||
b83604b4 | 395 | s = SvPV_const(sv, len); |
b469f1e0 | 396 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len)); |
14a5cf38 | 397 | SvREFCNT_dec(sv); |
70ace5da | 398 | #endif |
14a5cf38 JH |
399 | } |
400 | va_end(ap); | |
6f9d8c32 NIS |
401 | } |
402 | ||
9e353e3b NIS |
403 | /*--------------------------------------------------------------------------------------*/ |
404 | ||
14a5cf38 | 405 | /* |
71200d45 | 406 | * Inner level routines |
14a5cf38 | 407 | */ |
9e353e3b | 408 | |
16865ff7 DM |
409 | /* check that the head field of each layer points back to the head */ |
410 | ||
411 | #ifdef DEBUGGING | |
412 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
413 | static void | |
414 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
415 | { | |
416 | PerlIOl *head, *p; | |
417 | int seen = 0; | |
dd791c72 JH |
418 | #ifndef PERL_IMPLICIT_SYS |
419 | PERL_UNUSED_CONTEXT; | |
420 | #endif | |
16865ff7 DM |
421 | if (!PerlIOValid(f)) |
422 | return; | |
423 | p = head = PerlIOBase(f)->head; | |
424 | assert(p); | |
425 | do { | |
426 | assert(p->head == head); | |
427 | if (p == (PerlIOl*)f) | |
428 | seen = 1; | |
429 | p = p->next; | |
430 | } while (p); | |
431 | assert(seen); | |
432 | } | |
433 | #else | |
434 | # define VERIFY_HEAD(f) | |
435 | #endif | |
436 | ||
437 | ||
14a5cf38 | 438 | /* |
71200d45 | 439 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 440 | */ |
05d1247b | 441 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 442 | |
8995e67d DM |
443 | static void |
444 | PerlIO_init_table(pTHX) | |
445 | { | |
446 | if (PL_perlio) | |
447 | return; | |
448 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); | |
449 | } | |
450 | ||
451 | ||
452 | ||
760ac839 | 453 | PerlIO * |
5f1a76d0 | 454 | PerlIO_allocate(pTHX) |
6f9d8c32 | 455 | { |
14a5cf38 | 456 | /* |
71200d45 | 457 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 | 458 | */ |
303f2dc3 DM |
459 | PerlIOl **last; |
460 | PerlIOl *f; | |
a1ea730d | 461 | last = &PL_perlio; |
14a5cf38 JH |
462 | while ((f = *last)) { |
463 | int i; | |
303f2dc3 | 464 | last = (PerlIOl **) (f); |
14a5cf38 | 465 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 466 | if (!((++f)->next)) { |
4e0ef342 | 467 | goto good_exit; |
14a5cf38 JH |
468 | } |
469 | } | |
470 | } | |
303f2dc3 | 471 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 JH |
472 | if (!f) { |
473 | return NULL; | |
474 | } | |
303f2dc3 | 475 | *last = (PerlIOl*) f++; |
4e0ef342 DD |
476 | |
477 | good_exit: | |
abf9167d | 478 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 479 | f->tab = NULL; |
16865ff7 | 480 | f->head = f; |
303f2dc3 | 481 | return (PerlIO*) f; |
05d1247b NIS |
482 | } |
483 | ||
a1ea730d NIS |
484 | #undef PerlIO_fdupopen |
485 | PerlIO * | |
ecdeb87c | 486 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 487 | { |
04892f78 | 488 | if (PerlIOValid(f)) { |
de009b76 | 489 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
e17bc05a | 490 | DEBUG_i( PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param) ); |
210e727c JH |
491 | if (tab && tab->Dup) |
492 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
493 | else { |
494 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
495 | } | |
a1ea730d | 496 | } |
210e727c JH |
497 | else |
498 | SETERRNO(EBADF, SS_IVCHAN); | |
499 | ||
500 | return NULL; | |
a1ea730d NIS |
501 | } |
502 | ||
503 | void | |
303f2dc3 | 504 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 505 | { |
303f2dc3 | 506 | PerlIOl * const table = *tablep; |
14a5cf38 JH |
507 | if (table) { |
508 | int i; | |
303f2dc3 | 509 | PerlIO_cleantable(aTHX_(PerlIOl **) & (table[0])); |
14a5cf38 | 510 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
303f2dc3 DM |
511 | PerlIOl * const f = table + i; |
512 | if (f->next) { | |
513 | PerlIO_close(&(f->next)); | |
14a5cf38 JH |
514 | } |
515 | } | |
3a1ee7e8 | 516 | Safefree(table); |
14a5cf38 | 517 | *tablep = NULL; |
05d1247b | 518 | } |
05d1247b NIS |
519 | } |
520 | ||
fcf2db38 NIS |
521 | |
522 | PerlIO_list_t * | |
3a1ee7e8 | 523 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 524 | { |
14a5cf38 | 525 | PerlIO_list_t *list; |
96a5add6 | 526 | PERL_UNUSED_CONTEXT; |
a02a5408 | 527 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
528 | list->refcnt = 1; |
529 | return list; | |
fcf2db38 NIS |
530 | } |
531 | ||
532 | void | |
3a1ee7e8 | 533 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 534 | { |
14a5cf38 JH |
535 | if (list) { |
536 | if (--list->refcnt == 0) { | |
537 | if (list->array) { | |
14a5cf38 | 538 | IV i; |
ef8d46e8 VP |
539 | for (i = 0; i < list->cur; i++) |
540 | SvREFCNT_dec(list->array[i].arg); | |
14a5cf38 JH |
541 | Safefree(list->array); |
542 | } | |
543 | Safefree(list); | |
544 | } | |
545 | } | |
fcf2db38 NIS |
546 | } |
547 | ||
548 | void | |
3a1ee7e8 | 549 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 550 | { |
334e202e | 551 | PerlIO_pair_t *p; |
b37c2d43 AL |
552 | PERL_UNUSED_CONTEXT; |
553 | ||
14a5cf38 | 554 | if (list->cur >= list->len) { |
00195859 | 555 | const IV new_len = list->len + 8; |
14a5cf38 | 556 | if (list->array) |
00195859 | 557 | Renew(list->array, new_len, PerlIO_pair_t); |
14a5cf38 | 558 | else |
00195859 HS |
559 | Newx(list->array, new_len, PerlIO_pair_t); |
560 | list->len = new_len; | |
14a5cf38 JH |
561 | } |
562 | p = &(list->array[list->cur++]); | |
563 | p->funcs = funcs; | |
564 | if ((p->arg = arg)) { | |
f84c484e | 565 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 566 | } |
fcf2db38 NIS |
567 | } |
568 | ||
3a1ee7e8 NIS |
569 | PerlIO_list_t * |
570 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
571 | { | |
b37c2d43 | 572 | PerlIO_list_t *list = NULL; |
694c95cf JH |
573 | if (proto) { |
574 | int i; | |
575 | list = PerlIO_list_alloc(aTHX); | |
576 | for (i=0; i < proto->cur; i++) { | |
a951d81d | 577 | SV *arg = proto->array[i].arg; |
24d147a6 | 578 | #ifdef USE_ITHREADS |
a951d81d BL |
579 | if (arg && param) |
580 | arg = sv_dup(arg, param); | |
581 | #else | |
582 | PERL_UNUSED_ARG(param); | |
583 | #endif | |
694c95cf JH |
584 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
585 | } | |
3a1ee7e8 NIS |
586 | } |
587 | return list; | |
588 | } | |
4a4a6116 | 589 | |
05d1247b | 590 | void |
3a1ee7e8 | 591 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 592 | { |
3aaf42a7 | 593 | #ifdef USE_ITHREADS |
303f2dc3 DM |
594 | PerlIOl **table = &proto->Iperlio; |
595 | PerlIOl *f; | |
3a1ee7e8 NIS |
596 | PL_perlio = NULL; |
597 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
598 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 599 | PerlIO_init_table(aTHX); |
e17bc05a | 600 | DEBUG_i( PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto) ); |
3a1ee7e8 NIS |
601 | while ((f = *table)) { |
602 | int i; | |
303f2dc3 | 603 | table = (PerlIOl **) (f++); |
3a1ee7e8 | 604 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
605 | if (f->next) { |
606 | (void) fp_dup(&(f->next), 0, param); | |
3a1ee7e8 NIS |
607 | } |
608 | f++; | |
609 | } | |
610 | } | |
1b6737cc | 611 | #else |
a25429c6 | 612 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
613 | PERL_UNUSED_ARG(proto); |
614 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 615 | #endif |
9a6404c5 DM |
616 | } |
617 | ||
618 | void | |
13621cfb NIS |
619 | PerlIO_destruct(pTHX) |
620 | { | |
303f2dc3 DM |
621 | PerlIOl **table = &PL_perlio; |
622 | PerlIOl *f; | |
694c95cf | 623 | #ifdef USE_ITHREADS |
e17bc05a | 624 | DEBUG_i( PerlIO_debug("Destruct %p\n",(void*)aTHX) ); |
694c95cf | 625 | #endif |
14a5cf38 JH |
626 | while ((f = *table)) { |
627 | int i; | |
303f2dc3 | 628 | table = (PerlIOl **) (f++); |
14a5cf38 | 629 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 630 | PerlIO *x = &(f->next); |
dcda55fc | 631 | const PerlIOl *l; |
14a5cf38 | 632 | while ((l = *x)) { |
cc6623a8 | 633 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { |
e17bc05a | 634 | DEBUG_i( PerlIO_debug("Destruct popping %s\n", l->tab->name) ); |
14a5cf38 JH |
635 | PerlIO_flush(x); |
636 | PerlIO_pop(aTHX_ x); | |
637 | } | |
638 | else { | |
639 | x = PerlIONext(x); | |
640 | } | |
641 | } | |
642 | f++; | |
643 | } | |
644 | } | |
13621cfb NIS |
645 | } |
646 | ||
647 | void | |
a999f61b | 648 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 649 | { |
dcda55fc | 650 | const PerlIOl *l = *f; |
16865ff7 | 651 | VERIFY_HEAD(f); |
14a5cf38 | 652 | if (l) { |
e17bc05a TC |
653 | DEBUG_i( PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
654 | l->tab ? l->tab->name : "(Null)") ); | |
cc6623a8 | 655 | if (l->tab && l->tab->Popped) { |
14a5cf38 JH |
656 | /* |
657 | * If popped returns non-zero do not free its layer structure | |
658 | * it has either done so itself, or it is shared and still in | |
71200d45 | 659 | * use |
14a5cf38 | 660 | */ |
f62ce20a | 661 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
662 | return; |
663 | } | |
abf9167d DM |
664 | if (PerlIO_lockcnt(f)) { |
665 | /* we're in use; defer freeing the structure */ | |
666 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
667 | PerlIOBase(f)->tab = NULL; | |
668 | } | |
669 | else { | |
670 | *f = l->next; | |
671 | Safefree(l); | |
672 | } | |
673 | ||
a8c08ecd | 674 | } |
6f9d8c32 NIS |
675 | } |
676 | ||
39f7a870 JH |
677 | /* Return as an array the stack of layers on a filehandle. Note that |
678 | * the stack is returned top-first in the array, and there are three | |
679 | * times as many array elements as there are layers in the stack: the | |
680 | * first element of a layer triplet is the name, the second one is the | |
681 | * arguments, and the third one is the flags. */ | |
682 | ||
683 | AV * | |
684 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
685 | { | |
dcda55fc | 686 | AV * const av = newAV(); |
39f7a870 | 687 | |
dcda55fc AL |
688 | if (PerlIOValid(f)) { |
689 | PerlIOl *l = PerlIOBase(f); | |
690 | ||
691 | while (l) { | |
92e45a3e NC |
692 | /* There is some collusion in the implementation of |
693 | XS_PerlIO_get_layers - it knows that name and flags are | |
694 | generated as fresh SVs here, and takes advantage of that to | |
695 | "copy" them by taking a reference. If it changes here, it needs | |
696 | to change there too. */ | |
dcda55fc AL |
697 | SV * const name = l->tab && l->tab->name ? |
698 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
699 | SV * const arg = l->tab && l->tab->Getarg ? | |
700 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
701 | av_push(av, name); | |
702 | av_push(av, arg); | |
703 | av_push(av, newSViv((IV)l->flags)); | |
704 | l = l->next; | |
705 | } | |
706 | } | |
39f7a870 | 707 | |
dcda55fc | 708 | return av; |
39f7a870 JH |
709 | } |
710 | ||
9e353e3b | 711 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 712 | /* |
71200d45 | 713 | * XS Interface for perl code |
14a5cf38 | 714 | */ |
9e353e3b | 715 | |
fcf2db38 | 716 | PerlIO_funcs * |
2edd7e44 | 717 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 718 | { |
20b7effb | 719 | |
14a5cf38 JH |
720 | IV i; |
721 | if ((SSize_t) len <= 0) | |
722 | len = strlen(name); | |
3a1ee7e8 | 723 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 724 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
725 | const STRLEN this_len = strlen(f->name); |
726 | if (this_len == len && memEQ(f->name, name, len)) { | |
e17bc05a | 727 | DEBUG_i( PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f) ); |
14a5cf38 JH |
728 | return f; |
729 | } | |
730 | } | |
3a1ee7e8 NIS |
731 | if (load && PL_subname && PL_def_layerlist |
732 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
733 | if (PL_in_load_module) { |
734 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
735 | return NULL; | |
736 | } else { | |
396482e1 | 737 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 | 738 | SV * const layer = newSVpvn(name, len); |
b96d8cd9 | 739 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); |
46c461b5 | 740 | ENTER; |
4fa7c2bf | 741 | SAVEBOOL(PL_in_load_module); |
c9bca74a | 742 | if (cv) { |
9cfa90c0 | 743 | SAVEGENERICSV(PL_warnhook); |
ad64d0ec | 744 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); |
c9bca74a | 745 | } |
4fa7c2bf | 746 | PL_in_load_module = TRUE; |
d7a09b41 SR |
747 | /* |
748 | * The two SVs are magically freed by load_module | |
749 | */ | |
a0714e2c | 750 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
751 | LEAVE; |
752 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
753 | } | |
14a5cf38 | 754 | } |
e17bc05a | 755 | DEBUG_i( PerlIO_debug("Cannot find %.*s\n", (int) len, name) ); |
14a5cf38 | 756 | return NULL; |
f3862f8b NIS |
757 | } |
758 | ||
2a1bc955 | 759 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
760 | |
761 | static int | |
762 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
763 | { | |
14a5cf38 | 764 | if (SvROK(sv)) { |
159b6efe | 765 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
766 | PerlIO * const ifp = IoIFP(io); |
767 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
768 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", |
769 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
770 | } |
771 | return 0; | |
b13b2135 NIS |
772 | } |
773 | ||
774 | static int | |
775 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
776 | { | |
14a5cf38 | 777 | if (SvROK(sv)) { |
159b6efe | 778 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
dcda55fc AL |
779 | PerlIO * const ifp = IoIFP(io); |
780 | PerlIO * const ofp = IoOFP(io); | |
be2597df MHM |
781 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", |
782 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
783 | } |
784 | return 0; | |
b13b2135 NIS |
785 | } |
786 | ||
787 | static int | |
788 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
789 | { | |
be2597df | 790 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 791 | return 0; |
b13b2135 NIS |
792 | } |
793 | ||
794 | static int | |
795 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
796 | { | |
be2597df | 797 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 798 | return 0; |
b13b2135 NIS |
799 | } |
800 | ||
801 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
802 | perlio_mg_get, |
803 | perlio_mg_set, | |
22569500 | 804 | NULL, /* len */ |
14a5cf38 JH |
805 | perlio_mg_clear, |
806 | perlio_mg_free | |
b13b2135 NIS |
807 | }; |
808 | ||
15eb3045 | 809 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
810 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
811 | { | |
14a5cf38 | 812 | dXSARGS; |
dcda55fc AL |
813 | SV * const sv = SvRV(ST(1)); |
814 | AV * const av = newAV(); | |
14a5cf38 JH |
815 | MAGIC *mg; |
816 | int count = 0; | |
817 | int i; | |
ad64d0ec | 818 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
819 | SvRMAGICAL_off(sv); |
820 | mg = mg_find(sv, PERL_MAGIC_ext); | |
821 | mg->mg_virtual = &perlio_vtab; | |
822 | mg_magical(sv); | |
be2597df | 823 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 JH |
824 | for (i = 2; i < items; i++) { |
825 | STRLEN len; | |
dcda55fc AL |
826 | const char * const name = SvPV_const(ST(i), len); |
827 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 828 | if (layer) { |
b37c2d43 | 829 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
830 | } |
831 | else { | |
832 | ST(count) = ST(i); | |
833 | count++; | |
834 | } | |
835 | } | |
836 | SvREFCNT_dec(av); | |
837 | XSRETURN(count); | |
838 | } | |
839 | ||
b8fda935 | 840 | #endif /* USE_ATTRIBUTES_FOR_PERLIO */ |
2a1bc955 | 841 | |
e3f3bf95 NIS |
842 | SV * |
843 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 844 | { |
da51bb9b | 845 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 846 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 847 | return sv; |
e3f3bf95 NIS |
848 | } |
849 | ||
15eb3045 | 850 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 851 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 852 | { |
486ec47a | 853 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
854 | during loading of layers. |
855 | */ | |
856 | dXSARGS; | |
5347602a | 857 | PERL_UNUSED_VAR(items); |
e17bc05a TC |
858 | DEBUG_i( |
859 | if (items) | |
860 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))) ); | |
c9bca74a NIS |
861 | XSRETURN(0); |
862 | } | |
863 | ||
15eb3045 | 864 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 865 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 866 | { |
14a5cf38 JH |
867 | dXSARGS; |
868 | if (items < 2) | |
869 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
870 | else { | |
de009b76 | 871 | STRLEN len; |
46c461b5 | 872 | const char * const name = SvPV_const(ST(1), len); |
f814d560 | 873 | const bool load = (items > 2) ? SvTRUE_NN(ST(2)) : 0; |
46c461b5 | 874 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
875 | ST(0) = |
876 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
877 | &PL_sv_undef; | |
878 | XSRETURN(1); | |
879 | } | |
0c4f7ff0 NIS |
880 | } |
881 | ||
e3f3bf95 NIS |
882 | void |
883 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
884 | { | |
3a1ee7e8 NIS |
885 | if (!PL_known_layers) |
886 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 887 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
e17bc05a | 888 | DEBUG_i( PerlIO_debug("define %s %p\n", tab->name, (void*)tab) ); |
f3862f8b NIS |
889 | } |
890 | ||
1141d9f8 | 891 | int |
fcf2db38 | 892 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 893 | { |
14a5cf38 JH |
894 | if (names) { |
895 | const char *s = names; | |
896 | while (*s) { | |
897 | while (isSPACE(*s) || *s == ':') | |
898 | s++; | |
899 | if (*s) { | |
900 | STRLEN llen = 0; | |
901 | const char *e = s; | |
bd61b366 | 902 | const char *as = NULL; |
14a5cf38 JH |
903 | STRLEN alen = 0; |
904 | if (!isIDFIRST(*s)) { | |
905 | /* | |
906 | * Message is consistent with how attribute lists are | |
907 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 908 | * seen as an invalid separator character. |
14a5cf38 | 909 | */ |
de009b76 | 910 | const char q = ((*s == '\'') ? '"' : '\''); |
a2a5de95 NC |
911 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
912 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
913 | q, *s, q, s); | |
93189314 | 914 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
915 | return -1; |
916 | } | |
917 | do { | |
918 | e++; | |
0eb30aeb | 919 | } while (isWORDCHAR(*e)); |
14a5cf38 JH |
920 | llen = e - s; |
921 | if (*e == '(') { | |
922 | int nesting = 1; | |
923 | as = ++e; | |
924 | while (nesting) { | |
925 | switch (*e++) { | |
926 | case ')': | |
927 | if (--nesting == 0) | |
928 | alen = (e - 1) - as; | |
929 | break; | |
930 | case '(': | |
931 | ++nesting; | |
932 | break; | |
933 | case '\\': | |
934 | /* | |
935 | * It's a nul terminated string, not allowed | |
936 | * to \ the terminating null. Anything other | |
71200d45 | 937 | * character is passed over. |
14a5cf38 JH |
938 | */ |
939 | if (*e++) { | |
940 | break; | |
941 | } | |
2165bd23 | 942 | /* Fall through */ |
14a5cf38 JH |
943 | case '\0': |
944 | e--; | |
a2a5de95 NC |
945 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), |
946 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
947 | (int) (e - s), s); | |
14a5cf38 JH |
948 | return -1; |
949 | default: | |
950 | /* | |
71200d45 | 951 | * boring. |
14a5cf38 JH |
952 | */ |
953 | break; | |
954 | } | |
955 | } | |
956 | } | |
957 | if (e > s) { | |
46c461b5 | 958 | PerlIO_funcs * const layer = |
14a5cf38 JH |
959 | PerlIO_find_layer(aTHX_ s, llen, 1); |
960 | if (layer) { | |
a951d81d BL |
961 | SV *arg = NULL; |
962 | if (as) | |
963 | arg = newSVpvn(as, alen); | |
3a1ee7e8 | 964 | PerlIO_list_push(aTHX_ av, layer, |
a951d81d | 965 | (arg) ? arg : &PL_sv_undef); |
ef8d46e8 | 966 | SvREFCNT_dec(arg); |
14a5cf38 JH |
967 | } |
968 | else { | |
a2a5de95 NC |
969 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
970 | (int) llen, s); | |
14a5cf38 JH |
971 | return -1; |
972 | } | |
973 | } | |
974 | s = e; | |
975 | } | |
976 | } | |
977 | } | |
978 | return 0; | |
1141d9f8 NIS |
979 | } |
980 | ||
dfebf958 | 981 | void |
fcf2db38 | 982 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 983 | { |
27da23d5 | 984 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 985 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 986 | tab = &PerlIO_crlf; |
846be114 | 987 | #else |
6ce75a77 | 988 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 989 | tab = &PerlIO_stdio; |
846be114 | 990 | #endif |
e17bc05a | 991 | DEBUG_i( PerlIO_debug("Pushing %s\n", tab->name) ); |
0987d6f3 | 992 | PerlIO_list_push(aTHX_ av, (PerlIO_funcs *)tab, &PL_sv_undef); |
dfebf958 NIS |
993 | } |
994 | ||
e3f3bf95 | 995 | SV * |
14a5cf38 | 996 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 997 | { |
14a5cf38 | 998 | return av->array[n].arg; |
e3f3bf95 NIS |
999 | } |
1000 | ||
f3862f8b | 1001 | PerlIO_funcs * |
14a5cf38 | 1002 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1003 | { |
14a5cf38 | 1004 | if (n >= 0 && n < av->cur) { |
e17bc05a TC |
1005 | DEBUG_i( PerlIO_debug("Layer %" IVdf " is %s\n", n, |
1006 | av->array[n].funcs->name) ); | |
14a5cf38 JH |
1007 | return av->array[n].funcs; |
1008 | } | |
1009 | if (!def) | |
1010 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1011 | return def; | |
e3f3bf95 NIS |
1012 | } |
1013 | ||
4ec2216f NIS |
1014 | IV |
1015 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1016 | { | |
8772537c AL |
1017 | PERL_UNUSED_ARG(mode); |
1018 | PERL_UNUSED_ARG(arg); | |
1019 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1020 | if (PerlIOValid(f)) { |
1021 | PerlIO_flush(f); | |
1022 | PerlIO_pop(aTHX_ f); | |
1023 | return 0; | |
1024 | } | |
1025 | return -1; | |
1026 | } | |
1027 | ||
27da23d5 | 1028 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1029 | sizeof(PerlIO_funcs), |
1030 | "pop", | |
1031 | 0, | |
1032 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1033 | PerlIOPop_pushed, | |
1034 | NULL, | |
c0888ace | 1035 | PerlIOBase_open, |
4ec2216f NIS |
1036 | NULL, |
1037 | NULL, | |
1038 | NULL, | |
1039 | NULL, | |
1040 | NULL, | |
1041 | NULL, | |
1042 | NULL, | |
1043 | NULL, | |
de009b76 AL |
1044 | NULL, |
1045 | NULL, | |
4ec2216f NIS |
1046 | NULL, /* flush */ |
1047 | NULL, /* fill */ | |
1048 | NULL, | |
1049 | NULL, | |
1050 | NULL, | |
1051 | NULL, | |
1052 | NULL, /* get_base */ | |
1053 | NULL, /* get_bufsiz */ | |
1054 | NULL, /* get_ptr */ | |
1055 | NULL, /* get_cnt */ | |
1056 | NULL, /* set_ptrcnt */ | |
1057 | }; | |
1058 | ||
fcf2db38 | 1059 | PerlIO_list_t * |
e3f3bf95 NIS |
1060 | PerlIO_default_layers(pTHX) |
1061 | { | |
3a1ee7e8 | 1062 | if (!PL_def_layerlist) { |
284167a5 | 1063 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1064 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1065 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1066 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1067 | #if defined(WIN32) |
27da23d5 | 1068 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1069 | #if 0 |
14a5cf38 | 1070 | osLayer = &PerlIO_win32; |
0c4128ad | 1071 | #endif |
2f8118af | 1072 | #endif |
27da23d5 JH |
1073 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1074 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1075 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1076 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
27da23d5 JH |
1077 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1078 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1079 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
0987d6f3 TC |
1080 | PerlIO_list_push(aTHX_ PL_def_layerlist, (PerlIO_funcs *)osLayer, |
1081 | &PL_sv_undef); | |
14a5cf38 | 1082 | if (s) { |
3a1ee7e8 | 1083 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1084 | } |
1085 | else { | |
3a1ee7e8 | 1086 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1087 | } |
1141d9f8 | 1088 | } |
3a1ee7e8 NIS |
1089 | if (PL_def_layerlist->cur < 2) { |
1090 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1091 | } |
3a1ee7e8 | 1092 | return PL_def_layerlist; |
e3f3bf95 NIS |
1093 | } |
1094 | ||
0c4f7ff0 NIS |
1095 | void |
1096 | Perl_boot_core_PerlIO(pTHX) | |
1097 | { | |
1098 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1099 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1100 | __FILE__); | |
0c4f7ff0 | 1101 | #endif |
14a5cf38 | 1102 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1103 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1104 | } |
e3f3bf95 NIS |
1105 | |
1106 | PerlIO_funcs * | |
1107 | PerlIO_default_layer(pTHX_ I32 n) | |
1108 | { | |
46c461b5 | 1109 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1110 | if (n < 0) |
1111 | n += av->cur; | |
27da23d5 | 1112 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1113 | } |
1114 | ||
a999f61b NIS |
1115 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1116 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1117 | |
1118 | void | |
1141d9f8 | 1119 | PerlIO_stdstreams(pTHX) |
60382766 | 1120 | { |
a1ea730d | 1121 | if (!PL_perlio) { |
8995e67d | 1122 | PerlIO_init_table(aTHX); |
14a5cf38 JH |
1123 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); |
1124 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1125 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1126 | } | |
60382766 NIS |
1127 | } |
1128 | ||
1129 | PerlIO * | |
27da23d5 | 1130 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1131 | { |
16865ff7 | 1132 | VERIFY_HEAD(f); |
2dc2558e | 1133 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
0dc17498 | 1134 | Perl_croak( aTHX_ |
147e3846 | 1135 | "%s (%" UVuf ") does not match %s (%" UVuf ")", |
5cf96513 RB |
1136 | "PerlIO layer function table size", (UV)tab->fsize, |
1137 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1138 | } |
1139 | if (tab->size) { | |
b464bac0 | 1140 | PerlIOl *l; |
2dc2558e | 1141 | if (tab->size < sizeof(PerlIOl)) { |
0dc17498 | 1142 | Perl_croak( aTHX_ |
147e3846 | 1143 | "%s (%" UVuf ") smaller than %s (%" UVuf ")", |
5cf96513 RB |
1144 | "PerlIO layer instance size", (UV)tab->size, |
1145 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
2dc2558e NIS |
1146 | } |
1147 | /* Real layer with a data area */ | |
002e75cf JH |
1148 | if (f) { |
1149 | char *temp; | |
1150 | Newxz(temp, tab->size, char); | |
1151 | l = (PerlIOl*)temp; | |
1152 | if (l) { | |
1153 | l->next = *f; | |
1154 | l->tab = (PerlIO_funcs*) tab; | |
16865ff7 | 1155 | l->head = ((PerlIOl*)f)->head; |
002e75cf | 1156 | *f = l; |
e17bc05a TC |
1157 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", |
1158 | (void*)f, tab->name, | |
1159 | (mode) ? mode : "(Null)", (void*)arg) ); | |
002e75cf JH |
1160 | if (*l->tab->Pushed && |
1161 | (*l->tab->Pushed) | |
1162 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1163 | PerlIO_pop(aTHX_ f); | |
1164 | return NULL; | |
1165 | } | |
2dc2558e | 1166 | } |
002e75cf JH |
1167 | else |
1168 | return NULL; | |
2dc2558e NIS |
1169 | } |
1170 | } | |
1171 | else if (f) { | |
1172 | /* Pseudo-layer where push does its own stack adjust */ | |
e17bc05a TC |
1173 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1174 | (mode) ? mode : "(Null)", (void*)arg) ); | |
210e727c | 1175 | if (tab->Pushed && |
27da23d5 | 1176 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1177 | return NULL; |
14a5cf38 JH |
1178 | } |
1179 | } | |
1180 | return f; | |
60382766 NIS |
1181 | } |
1182 | ||
81fe74fb LT |
1183 | PerlIO * |
1184 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1185 | IV n, const char *mode, int fd, int imode, int perm, | |
1186 | PerlIO *old, int narg, SV **args) | |
1187 | { | |
1188 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1189 | if (tab && tab->Open) { | |
1190 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); | |
6d5bdea2 | 1191 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { |
81fe74fb LT |
1192 | PerlIO_close(ret); |
1193 | return NULL; | |
1194 | } | |
1195 | return ret; | |
1196 | } | |
1197 | SETERRNO(EINVAL, LIB_INVARG); | |
1198 | return NULL; | |
1199 | } | |
1200 | ||
dfebf958 | 1201 | IV |
86e05cf2 NIS |
1202 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1203 | { | |
1204 | if (PerlIOValid(f)) { | |
1205 | /* Is layer suitable for raw stream ? */ | |
cc6623a8 | 1206 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { |
86e05cf2 NIS |
1207 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ |
1208 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1209 | } | |
1210 | else { | |
1211 | /* Not suitable - pop it */ | |
1212 | PerlIO_pop(aTHX_ f); | |
1213 | } | |
1214 | return 0; | |
1215 | } | |
1216 | return -1; | |
1217 | } | |
1218 | ||
1219 | IV | |
2dc2558e | 1220 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1221 | { |
8772537c AL |
1222 | PERL_UNUSED_ARG(mode); |
1223 | PERL_UNUSED_ARG(arg); | |
1224 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1225 | |
04892f78 | 1226 | if (PerlIOValid(f)) { |
86e05cf2 | 1227 | PerlIO *t; |
de009b76 | 1228 | const PerlIOl *l; |
14a5cf38 | 1229 | PerlIO_flush(f); |
86e05cf2 NIS |
1230 | /* |
1231 | * Strip all layers that are not suitable for a raw stream | |
1232 | */ | |
1233 | t = f; | |
1234 | while (t && (l = *t)) { | |
cc6623a8 | 1235 | if (l->tab && l->tab->Binmode) { |
86e05cf2 | 1236 | /* Has a handler - normal case */ |
9d97e8b8 | 1237 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { |
86e05cf2 NIS |
1238 | if (*t == l) { |
1239 | /* Layer still there - move down a layer */ | |
1240 | t = PerlIONext(t); | |
1241 | } | |
1242 | } | |
1243 | else { | |
1244 | return -1; | |
1245 | } | |
14a5cf38 JH |
1246 | } |
1247 | else { | |
86e05cf2 NIS |
1248 | /* No handler - pop it */ |
1249 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1250 | } |
1251 | } | |
86e05cf2 | 1252 | if (PerlIOValid(f)) { |
e17bc05a TC |
1253 | DEBUG_i( PerlIO_debug(":raw f=%p :%s\n", (void*)f, |
1254 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)") ); | |
86e05cf2 NIS |
1255 | return 0; |
1256 | } | |
14a5cf38 JH |
1257 | } |
1258 | return -1; | |
dfebf958 NIS |
1259 | } |
1260 | ||
ac27b0f5 | 1261 | int |
14a5cf38 | 1262 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1263 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1264 | { |
14a5cf38 JH |
1265 | int code = 0; |
1266 | while (n < max) { | |
8772537c | 1267 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1268 | if (tab) { |
1269 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1270 | code = -1; | |
1271 | break; | |
1272 | } | |
1273 | } | |
1274 | n++; | |
1275 | } | |
1276 | return code; | |
e3f3bf95 NIS |
1277 | } |
1278 | ||
1279 | int | |
ac27b0f5 NIS |
1280 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1281 | { | |
14a5cf38 | 1282 | int code = 0; |
da0fccaa DG |
1283 | ENTER; |
1284 | save_scalar(PL_errgv); | |
53f1b6d2 | 1285 | if (f && names) { |
8772537c | 1286 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1287 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1288 | if (code == 0) { | |
d9dac8cd | 1289 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1290 | } |
3a1ee7e8 | 1291 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1292 | } |
da0fccaa | 1293 | LEAVE; |
14a5cf38 | 1294 | return code; |
ac27b0f5 NIS |
1295 | } |
1296 | ||
f3862f8b | 1297 | |
60382766 | 1298 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1299 | /* |
71200d45 | 1300 | * Given the abstraction above the public API functions |
14a5cf38 | 1301 | */ |
60382766 NIS |
1302 | |
1303 | int | |
f5b9d040 | 1304 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1305 | { |
5347602a DM |
1306 | PERL_UNUSED_ARG(iotype); |
1307 | PERL_UNUSED_ARG(mode); | |
1308 | ||
e17bc05a TC |
1309 | DEBUG_i( |
1310 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, | |
1311 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? | |
1312 | PerlIOBase(f)->tab->name : "(Null)", | |
1313 | iotype, mode, (names) ? names : "(Null)") ); | |
68b5363f | 1314 | |
03c0554d NIS |
1315 | if (names) { |
1316 | /* Do not flush etc. if (e.g.) switching encodings. | |
1317 | if a pushed layer knows it needs to flush lower layers | |
1318 | (for example :unix which is never going to call them) | |
1319 | it can do the flush when it is pushed. | |
1320 | */ | |
8298454c | 1321 | return cBOOL(PerlIO_apply_layers(aTHX_ f, NULL, names) == 0); |
03c0554d NIS |
1322 | } |
1323 | else { | |
86e05cf2 | 1324 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1325 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1326 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1327 | O_BINARY so we can look for it in mode. | |
1328 | */ | |
1329 | if (!(mode & O_BINARY)) { | |
1330 | /* Text mode */ | |
86e05cf2 NIS |
1331 | /* FIXME?: Looking down the layer stack seems wrong, |
1332 | but is a way of reaching past (say) an encoding layer | |
1333 | to flip CRLF-ness of the layer(s) below | |
1334 | */ | |
03c0554d NIS |
1335 | while (*f) { |
1336 | /* Perhaps we should turn on bottom-most aware layer | |
1337 | e.g. Ilya's idea that UNIX TTY could serve | |
1338 | */ | |
cc6623a8 DM |
1339 | if (PerlIOBase(f)->tab && |
1340 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1341 | { | |
03c0554d NIS |
1342 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { |
1343 | /* Not in text mode - flush any pending stuff and flip it */ | |
1344 | PerlIO_flush(f); | |
1345 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1346 | } | |
1347 | /* Only need to turn it on in one layer so we are done */ | |
1348 | return TRUE; | |
ed53a2bb | 1349 | } |
03c0554d | 1350 | f = PerlIONext(f); |
14a5cf38 | 1351 | } |
03c0554d NIS |
1352 | /* Not finding a CRLF aware layer presumably means we are binary |
1353 | which is not what was requested - so we failed | |
1354 | We _could_ push :crlf layer but so could caller | |
1355 | */ | |
1356 | return FALSE; | |
14a5cf38 | 1357 | } |
6ce75a77 | 1358 | #endif |
86e05cf2 NIS |
1359 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1360 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1361 | */ |
8298454c | 1362 | return cBOOL(PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL)); |
14a5cf38 | 1363 | } |
f5b9d040 NIS |
1364 | } |
1365 | ||
f5b9d040 | 1366 | int |
e87a358a | 1367 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1368 | { |
37725cdc | 1369 | if (PerlIOValid(f)) { |
46c461b5 | 1370 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1371 | if (tab && tab->Close) |
1372 | return (*tab->Close)(aTHX_ f); | |
1373 | else | |
1374 | return PerlIOBase_close(aTHX_ f); | |
1375 | } | |
14a5cf38 | 1376 | else { |
93189314 | 1377 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1378 | return -1; |
1379 | } | |
76ced9ad NIS |
1380 | } |
1381 | ||
b931b1d9 | 1382 | int |
e87a358a | 1383 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1384 | { |
de009b76 | 1385 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1386 | while (PerlIOValid(f)) { |
1387 | PerlIO_pop(aTHX_ f); | |
abf9167d DM |
1388 | if (PerlIO_lockcnt(f)) |
1389 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1390 | f = PerlIONext(f); | |
f6c77cf1 | 1391 | } |
14a5cf38 | 1392 | return code; |
b931b1d9 NIS |
1393 | } |
1394 | ||
b931b1d9 | 1395 | int |
e87a358a | 1396 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1397 | { |
20b7effb | 1398 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1399 | } |
1400 | ||
1141d9f8 | 1401 | |
fcf2db38 | 1402 | static PerlIO_funcs * |
2edd7e44 NIS |
1403 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1404 | { | |
14a5cf38 | 1405 | /* |
71200d45 | 1406 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1407 | */ |
526fd1b4 | 1408 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
75208dda RGS |
1409 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1410 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1411 | * but could happen anyway in smaller installs or with PAR */ | |
a2a5de95 | 1412 | if (!f) |
dcbac5bb | 1413 | /* diag_listed_as: Unknown PerlIO layer "%s" */ |
a2a5de95 | 1414 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); |
75208dda RGS |
1415 | return f; |
1416 | } | |
14a5cf38 JH |
1417 | |
1418 | /* | |
71200d45 | 1419 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1420 | */ |
1421 | switch (SvTYPE(sv)) { | |
1422 | case SVt_PVAV: | |
6a245ed1 | 1423 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1424 | case SVt_PVHV: |
6a245ed1 | 1425 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1426 | case SVt_PVCV: |
6a245ed1 | 1427 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1428 | case SVt_PVGV: |
6a245ed1 | 1429 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1430 | default: |
1431 | return NULL; | |
14a5cf38 | 1432 | } |
2edd7e44 NIS |
1433 | } |
1434 | ||
fcf2db38 | 1435 | PerlIO_list_t * |
14a5cf38 JH |
1436 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1437 | const char *mode, int narg, SV **args) | |
1438 | { | |
1439 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); | |
1440 | int incdef = 1; | |
a1ea730d | 1441 | if (!PL_perlio) |
14a5cf38 JH |
1442 | PerlIO_stdstreams(aTHX); |
1443 | if (narg) { | |
dcda55fc | 1444 | SV * const arg = *args; |
14a5cf38 | 1445 | /* |
71200d45 NIS |
1446 | * If it is a reference but not an object see if we have a handler |
1447 | * for it | |
14a5cf38 | 1448 | */ |
4e0ef342 | 1449 | if (SvROK(arg) && !SvOBJECT(SvRV(arg))) { |
46c461b5 | 1450 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1451 | if (handler) { |
3a1ee7e8 NIS |
1452 | def = PerlIO_list_alloc(aTHX); |
1453 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1454 | incdef = 0; |
1455 | } | |
1456 | /* | |
e934609f | 1457 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1458 | * something sensible else we will just stringfy and open |
71200d45 | 1459 | * resulting string. |
14a5cf38 JH |
1460 | */ |
1461 | } | |
1462 | } | |
9fe371da | 1463 | if (!layers || !*layers) |
11bcd5da | 1464 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1465 | if (layers && *layers) { |
1466 | PerlIO_list_t *av; | |
1467 | if (incdef) { | |
a951d81d | 1468 | av = PerlIO_clone_list(aTHX_ def, NULL); |
14a5cf38 JH |
1469 | } |
1470 | else { | |
1471 | av = def; | |
1472 | } | |
0cff2cf3 NIS |
1473 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1474 | return av; | |
1475 | } | |
1476 | else { | |
1477 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1478 | return NULL; |
0cff2cf3 | 1479 | } |
14a5cf38 JH |
1480 | } |
1481 | else { | |
1482 | if (incdef) | |
1483 | def->refcnt++; | |
1484 | return def; | |
1485 | } | |
ee518936 NIS |
1486 | } |
1487 | ||
1488 | PerlIO * | |
14a5cf38 JH |
1489 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1490 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1491 | { | |
1492 | if (!f && narg == 1 && *args == &PL_sv_undef) { | |
ae73d7ec TC |
1493 | int imode = PerlIOUnix_oflags(mode); |
1494 | ||
1495 | if (imode != -1 && (f = PerlIO_tmpfile_flags(imode))) { | |
9fe371da | 1496 | if (!layers || !*layers) |
11bcd5da | 1497 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1498 | if (layers && *layers) |
1499 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1500 | } | |
1501 | } | |
1502 | else { | |
de009b76 | 1503 | PerlIO_list_t *layera; |
14a5cf38 JH |
1504 | IV n; |
1505 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1506 | if (PerlIOValid(f)) { |
14a5cf38 | 1507 | /* |
71200d45 NIS |
1508 | * This is "reopen" - it is not tested as perl does not use it |
1509 | * yet | |
14a5cf38 JH |
1510 | */ |
1511 | PerlIOl *l = *f; | |
3a1ee7e8 | 1512 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1513 | while (l) { |
a951d81d | 1514 | SV *arg = NULL; |
cc6623a8 | 1515 | if (l->tab && l->tab->Getarg) |
a951d81d BL |
1516 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); |
1517 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1518 | (arg) ? arg : &PL_sv_undef); | |
ef8d46e8 | 1519 | SvREFCNT_dec(arg); |
14a5cf38 JH |
1520 | l = *PerlIONext(&l); |
1521 | } | |
1522 | } | |
1523 | else { | |
1524 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1525 | if (!layera) { |
1526 | return NULL; | |
1527 | } | |
14a5cf38 JH |
1528 | } |
1529 | /* | |
71200d45 | 1530 | * Start at "top" of layer stack |
14a5cf38 JH |
1531 | */ |
1532 | n = layera->cur - 1; | |
1533 | while (n >= 0) { | |
46c461b5 | 1534 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1535 | if (t && t->Open) { |
1536 | tab = t; | |
1537 | break; | |
1538 | } | |
1539 | n--; | |
1540 | } | |
1541 | if (tab) { | |
1542 | /* | |
71200d45 | 1543 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1544 | */ |
7cf31beb | 1545 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1546 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1547 | } |
e17bc05a TC |
1548 | DEBUG_i( PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
1549 | tab->name, layers ? layers : "(Null)", mode, fd, | |
1550 | imode, perm, (void*)f, narg, (void*)args) ); | |
210e727c JH |
1551 | if (tab->Open) |
1552 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1553 | f, narg, args); | |
1554 | else { | |
1555 | SETERRNO(EINVAL, LIB_INVARG); | |
1556 | f = NULL; | |
1557 | } | |
14a5cf38 JH |
1558 | if (f) { |
1559 | if (n + 1 < layera->cur) { | |
1560 | /* | |
1561 | * More layers above the one that we used to open - | |
71200d45 | 1562 | * apply them now |
14a5cf38 | 1563 | */ |
d9dac8cd NIS |
1564 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1565 | /* If pushing layers fails close the file */ | |
1566 | PerlIO_close(f); | |
14a5cf38 JH |
1567 | f = NULL; |
1568 | } | |
1569 | } | |
1570 | } | |
1571 | } | |
3a1ee7e8 | 1572 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1573 | } |
1574 | return f; | |
ee518936 | 1575 | } |
b931b1d9 NIS |
1576 | |
1577 | ||
9e353e3b | 1578 | SSize_t |
e87a358a | 1579 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1580 | { |
7918f24d NC |
1581 | PERL_ARGS_ASSERT_PERLIO_READ; |
1582 | ||
b32dd47e | 1583 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1584 | } |
1585 | ||
313ca112 | 1586 | SSize_t |
e87a358a | 1587 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1588 | { |
7918f24d NC |
1589 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1590 | ||
b32dd47e | 1591 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1592 | } |
1593 | ||
9e353e3b | 1594 | SSize_t |
e87a358a | 1595 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1596 | { |
7918f24d NC |
1597 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1598 | ||
b32dd47e | 1599 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1600 | } |
1601 | ||
6f9d8c32 | 1602 | int |
e87a358a | 1603 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1604 | { |
b32dd47e | 1605 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1606 | } |
1607 | ||
9e353e3b | 1608 | Off_t |
e87a358a | 1609 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1610 | { |
b32dd47e | 1611 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1612 | } |
1613 | ||
6f9d8c32 | 1614 | int |
e87a358a | 1615 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1616 | { |
14a5cf38 JH |
1617 | if (f) { |
1618 | if (*f) { | |
de009b76 | 1619 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1620 | |
1621 | if (tab && tab->Flush) | |
f62ce20a | 1622 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1623 | else |
1624 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1625 | } |
1626 | else { | |
e17bc05a | 1627 | DEBUG_i( PerlIO_debug("Cannot flush f=%p\n", (void*)f) ); |
93189314 | 1628 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1629 | return -1; |
1630 | } | |
1631 | } | |
1632 | else { | |
1633 | /* | |
1634 | * Is it good API design to do flush-all on NULL, a potentially | |
486ec47a | 1635 | * erroneous input? Maybe some magical value (PerlIO* |
14a5cf38 JH |
1636 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar |
1637 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1638 | * decisions? --jhi |
14a5cf38 | 1639 | */ |
303f2dc3 DM |
1640 | PerlIOl **table = &PL_perlio; |
1641 | PerlIOl *ff; | |
14a5cf38 | 1642 | int code = 0; |
303f2dc3 | 1643 | while ((ff = *table)) { |
14a5cf38 | 1644 | int i; |
303f2dc3 | 1645 | table = (PerlIOl **) (ff++); |
14a5cf38 | 1646 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 | 1647 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) |
14a5cf38 | 1648 | code = -1; |
303f2dc3 | 1649 | ff++; |
14a5cf38 JH |
1650 | } |
1651 | } | |
1652 | return code; | |
1653 | } | |
760ac839 LW |
1654 | } |
1655 | ||
a9c883f6 | 1656 | void |
f62ce20a | 1657 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1658 | { |
303f2dc3 DM |
1659 | PerlIOl **table = &PL_perlio; |
1660 | PerlIOl *f; | |
14a5cf38 JH |
1661 | while ((f = *table)) { |
1662 | int i; | |
303f2dc3 | 1663 | table = (PerlIOl **) (f++); |
14a5cf38 | 1664 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
303f2dc3 DM |
1665 | if (f->next |
1666 | && (PerlIOBase(&(f->next))-> | |
14a5cf38 JH |
1667 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) |
1668 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
303f2dc3 | 1669 | PerlIO_flush(&(f->next)); |
14a5cf38 JH |
1670 | f++; |
1671 | } | |
a9c883f6 | 1672 | } |
a9c883f6 NIS |
1673 | } |
1674 | ||
06da4f11 | 1675 | int |
e87a358a | 1676 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1677 | { |
b32dd47e | 1678 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1679 | } |
1680 | ||
f3862f8b NIS |
1681 | int |
1682 | PerlIO_isutf8(PerlIO *f) | |
1683 | { | |
1b7a0411 JH |
1684 | if (PerlIOValid(f)) |
1685 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1686 | else | |
1687 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1688 | |
1b7a0411 | 1689 | return -1; |
f3862f8b NIS |
1690 | } |
1691 | ||
6f9d8c32 | 1692 | int |
e87a358a | 1693 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1694 | { |
b32dd47e | 1695 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1696 | } |
1697 | ||
9e353e3b | 1698 | int |
e87a358a | 1699 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1700 | { |
b32dd47e | 1701 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1702 | } |
1703 | ||
9e353e3b | 1704 | void |
e87a358a | 1705 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1706 | { |
b32dd47e | 1707 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1708 | } |
1709 | ||
9e353e3b | 1710 | void |
e87a358a | 1711 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1712 | { |
b32dd47e | 1713 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1714 | } |
1715 | ||
9e353e3b NIS |
1716 | int |
1717 | PerlIO_has_base(PerlIO *f) | |
1718 | { | |
1b7a0411 | 1719 | if (PerlIOValid(f)) { |
46c461b5 | 1720 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1721 | |
1722 | if (tab) | |
1723 | return (tab->Get_base != NULL); | |
1b7a0411 | 1724 | } |
1b7a0411 JH |
1725 | |
1726 | return 0; | |
760ac839 LW |
1727 | } |
1728 | ||
9e353e3b NIS |
1729 | int |
1730 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1731 | { |
d7dfc388 SK |
1732 | if (PerlIOValid(f)) { |
1733 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { | |
1734 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1735 | |
d7dfc388 SK |
1736 | if (tab) |
1737 | return (tab->Set_ptrcnt != NULL); | |
d7dfc388 | 1738 | } |
14a5cf38 | 1739 | } |
1b7a0411 | 1740 | |
14a5cf38 | 1741 | return 0; |
9e353e3b NIS |
1742 | } |
1743 | ||
9e353e3b NIS |
1744 | int |
1745 | PerlIO_has_cntptr(PerlIO *f) | |
1746 | { | |
04892f78 | 1747 | if (PerlIOValid(f)) { |
46c461b5 | 1748 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1749 | |
1750 | if (tab) | |
1751 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1752 | } |
1b7a0411 | 1753 | |
14a5cf38 | 1754 | return 0; |
9e353e3b NIS |
1755 | } |
1756 | ||
9e353e3b NIS |
1757 | int |
1758 | PerlIO_canset_cnt(PerlIO *f) | |
1759 | { | |
04892f78 | 1760 | if (PerlIOValid(f)) { |
46c461b5 | 1761 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1762 | |
1763 | if (tab) | |
1764 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1765 | } |
1b7a0411 | 1766 | |
14a5cf38 | 1767 | return 0; |
760ac839 LW |
1768 | } |
1769 | ||
888911fc | 1770 | STDCHAR * |
e87a358a | 1771 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1772 | { |
b32dd47e | 1773 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1774 | } |
1775 | ||
b66f3475 | 1776 | SSize_t |
e87a358a | 1777 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1778 | { |
b66f3475 | 1779 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1780 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1781 | } |
1782 | ||
9e353e3b | 1783 | STDCHAR * |
e87a358a | 1784 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1785 | { |
b32dd47e | 1786 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1787 | } |
1788 | ||
b66f3475 | 1789 | SSize_t |
e87a358a | 1790 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1791 | { |
b32dd47e | 1792 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1793 | } |
1794 | ||
9e353e3b | 1795 | void |
b66f3475 | 1796 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1797 | { |
b32dd47e | 1798 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1799 | } |
1800 | ||
9e353e3b | 1801 | void |
b66f3475 | 1802 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1803 | { |
b32dd47e | 1804 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1805 | } |
1806 | ||
4ec2216f | 1807 | |
9e353e3b | 1808 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1809 | /* |
71200d45 | 1810 | * utf8 and raw dummy layers |
14a5cf38 | 1811 | */ |
dfebf958 | 1812 | |
26fb694e | 1813 | IV |
2dc2558e | 1814 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1815 | { |
96a5add6 | 1816 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1817 | PERL_UNUSED_ARG(mode); |
1818 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1819 | if (PerlIOValid(f)) { |
cc6623a8 | 1820 | if (tab && tab->kind & PERLIO_K_UTF8) |
14a5cf38 JH |
1821 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
1822 | else | |
1823 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1824 | return 0; | |
1825 | } | |
1826 | return -1; | |
26fb694e NIS |
1827 | } |
1828 | ||
27da23d5 | 1829 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1830 | sizeof(PerlIO_funcs), |
14a5cf38 | 1831 | "utf8", |
2dc2558e | 1832 | 0, |
a778d1f5 | 1833 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1834 | PerlIOUtf8_pushed, |
1835 | NULL, | |
c0888ace | 1836 | PerlIOBase_open, |
14a5cf38 JH |
1837 | NULL, |
1838 | NULL, | |
1839 | NULL, | |
1840 | NULL, | |
1841 | NULL, | |
1842 | NULL, | |
1843 | NULL, | |
1844 | NULL, | |
de009b76 AL |
1845 | NULL, |
1846 | NULL, | |
22569500 NIS |
1847 | NULL, /* flush */ |
1848 | NULL, /* fill */ | |
14a5cf38 JH |
1849 | NULL, |
1850 | NULL, | |
1851 | NULL, | |
1852 | NULL, | |
22569500 NIS |
1853 | NULL, /* get_base */ |
1854 | NULL, /* get_bufsiz */ | |
1855 | NULL, /* get_ptr */ | |
1856 | NULL, /* get_cnt */ | |
1857 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1858 | }; |
1859 | ||
27da23d5 | 1860 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1861 | sizeof(PerlIO_funcs), |
14a5cf38 | 1862 | "bytes", |
2dc2558e | 1863 | 0, |
a778d1f5 | 1864 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1865 | PerlIOUtf8_pushed, |
1866 | NULL, | |
c0888ace | 1867 | PerlIOBase_open, |
14a5cf38 JH |
1868 | NULL, |
1869 | NULL, | |
1870 | NULL, | |
1871 | NULL, | |
1872 | NULL, | |
1873 | NULL, | |
1874 | NULL, | |
1875 | NULL, | |
de009b76 AL |
1876 | NULL, |
1877 | NULL, | |
22569500 NIS |
1878 | NULL, /* flush */ |
1879 | NULL, /* fill */ | |
14a5cf38 JH |
1880 | NULL, |
1881 | NULL, | |
1882 | NULL, | |
1883 | NULL, | |
22569500 NIS |
1884 | NULL, /* get_base */ |
1885 | NULL, /* get_bufsiz */ | |
1886 | NULL, /* get_ptr */ | |
1887 | NULL, /* get_cnt */ | |
1888 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1889 | }; |
1890 | ||
27da23d5 | 1891 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1892 | sizeof(PerlIO_funcs), |
14a5cf38 | 1893 | "raw", |
2dc2558e | 1894 | 0, |
14a5cf38 JH |
1895 | PERLIO_K_DUMMY, |
1896 | PerlIORaw_pushed, | |
1897 | PerlIOBase_popped, | |
ecfd0649 | 1898 | PerlIOBase_open, |
14a5cf38 JH |
1899 | NULL, |
1900 | NULL, | |
1901 | NULL, | |
1902 | NULL, | |
1903 | NULL, | |
1904 | NULL, | |
1905 | NULL, | |
1906 | NULL, | |
de009b76 AL |
1907 | NULL, |
1908 | NULL, | |
22569500 NIS |
1909 | NULL, /* flush */ |
1910 | NULL, /* fill */ | |
14a5cf38 JH |
1911 | NULL, |
1912 | NULL, | |
1913 | NULL, | |
1914 | NULL, | |
22569500 NIS |
1915 | NULL, /* get_base */ |
1916 | NULL, /* get_bufsiz */ | |
1917 | NULL, /* get_ptr */ | |
1918 | NULL, /* get_cnt */ | |
1919 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1920 | }; |
1921 | /*--------------------------------------------------------------------------------------*/ | |
1922 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1923 | /* |
71200d45 | 1924 | * "Methods" of the "base class" |
14a5cf38 | 1925 | */ |
9e353e3b NIS |
1926 | |
1927 | IV | |
f62ce20a | 1928 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1929 | { |
04892f78 | 1930 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1931 | } |
1932 | ||
f5b9d040 | 1933 | char * |
81428673 | 1934 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1935 | { |
1936 | char *s = buf; | |
81428673 | 1937 | if (PerlIOValid(f)) { |
de009b76 | 1938 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1939 | if (flags & PERLIO_F_APPEND) { |
1940 | *s++ = 'a'; | |
1941 | if (flags & PERLIO_F_CANREAD) { | |
1942 | *s++ = '+'; | |
1943 | } | |
14a5cf38 | 1944 | } |
81428673 NIS |
1945 | else if (flags & PERLIO_F_CANREAD) { |
1946 | *s++ = 'r'; | |
1947 | if (flags & PERLIO_F_CANWRITE) | |
1948 | *s++ = '+'; | |
1949 | } | |
1950 | else if (flags & PERLIO_F_CANWRITE) { | |
1951 | *s++ = 'w'; | |
1952 | if (flags & PERLIO_F_CANREAD) { | |
1953 | *s++ = '+'; | |
1954 | } | |
14a5cf38 | 1955 | } |
35990314 | 1956 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1957 | if (!(flags & PERLIO_F_CRLF)) |
1958 | *s++ = 'b'; | |
5f1a76d0 | 1959 | #endif |
81428673 | 1960 | } |
14a5cf38 JH |
1961 | *s = '\0'; |
1962 | return buf; | |
f5b9d040 NIS |
1963 | } |
1964 | ||
81428673 | 1965 | |
76ced9ad | 1966 | IV |
2dc2558e | 1967 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1968 | { |
de009b76 | 1969 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1970 | PERL_UNUSED_CONTEXT; |
8772537c | 1971 | PERL_UNUSED_ARG(arg); |
de009b76 | 1972 | |
14a5cf38 JH |
1973 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1974 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
cc6623a8 | 1975 | if (tab && tab->Set_ptrcnt != NULL) |
14a5cf38 JH |
1976 | l->flags |= PERLIO_F_FASTGETS; |
1977 | if (mode) { | |
3b6c1aba | 1978 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
1979 | mode++; |
1980 | switch (*mode++) { | |
1981 | case 'r': | |
1982 | l->flags |= PERLIO_F_CANREAD; | |
1983 | break; | |
1984 | case 'a': | |
1985 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
1986 | break; | |
1987 | case 'w': | |
1988 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
1989 | break; | |
1990 | default: | |
93189314 | 1991 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
1992 | return -1; |
1993 | } | |
49fc4906 YK |
1994 | #ifdef EBCDIC |
1995 | { | |
1996 | /* The mode variable contains one positional parameter followed by | |
1997 | * optional keyword parameters. The positional parameters must be | |
1998 | * passed as lowercase characters. The keyword parameters can be | |
1999 | * passed in mixed case. They must be separated by commas. Only one | |
2000 | * instance of a keyword can be specified. */ | |
2001 | int comma = 0; | |
2002 | while (*mode) { | |
2003 | switch (*mode++) { | |
2004 | case '+': | |
2005 | if(!comma) | |
2006 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2007 | break; | |
2008 | case 'b': | |
2009 | if(!comma) | |
2010 | l->flags &= ~PERLIO_F_CRLF; | |
2011 | break; | |
2012 | case 't': | |
2013 | if(!comma) | |
2014 | l->flags |= PERLIO_F_CRLF; | |
2015 | break; | |
2016 | case ',': | |
2017 | comma = 1; | |
2018 | break; | |
2019 | default: | |
2020 | break; | |
2021 | } | |
2022 | } | |
2023 | } | |
2024 | #else | |
14a5cf38 JH |
2025 | while (*mode) { |
2026 | switch (*mode++) { | |
2027 | case '+': | |
2028 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2029 | break; | |
2030 | case 'b': | |
2031 | l->flags &= ~PERLIO_F_CRLF; | |
2032 | break; | |
2033 | case 't': | |
2034 | l->flags |= PERLIO_F_CRLF; | |
2035 | break; | |
2036 | default: | |
93189314 | 2037 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2038 | return -1; |
2039 | } | |
2040 | } | |
49fc4906 | 2041 | #endif |
14a5cf38 JH |
2042 | } |
2043 | else { | |
2044 | if (l->next) { | |
2045 | l->flags |= l->next->flags & | |
2046 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2047 | PERLIO_F_APPEND); | |
2048 | } | |
2049 | } | |
5e2ab84b | 2050 | #if 0 |
e17bc05a | 2051 | DEBUG_i( |
14a5cf38 | 2052 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
6c9570dc | 2053 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
14a5cf38 | 2054 | l->flags, PerlIO_modestr(f, temp)); |
e17bc05a | 2055 | ); |
5e2ab84b | 2056 | #endif |
14a5cf38 | 2057 | return 0; |
76ced9ad NIS |
2058 | } |
2059 | ||
2060 | IV | |
f62ce20a | 2061 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2062 | { |
96a5add6 | 2063 | PERL_UNUSED_CONTEXT; |
8772537c | 2064 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2065 | return 0; |
760ac839 LW |
2066 | } |
2067 | ||
9e353e3b | 2068 | SSize_t |
f62ce20a | 2069 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2070 | { |
14a5cf38 | 2071 | /* |
71200d45 | 2072 | * Save the position as current head considers it |
14a5cf38 | 2073 | */ |
de009b76 | 2074 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2075 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2076 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2077 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2078 | } |
2079 | ||
f6c77cf1 | 2080 | SSize_t |
f62ce20a | 2081 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2082 | { |
14a5cf38 JH |
2083 | STDCHAR *buf = (STDCHAR *) vbuf; |
2084 | if (f) { | |
263df5f1 JH |
2085 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2086 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2087 | SETERRNO(EBADF, SS_IVCHAN); | |
0ea86a10 | 2088 | PerlIO_save_errno(f); |
263df5f1 JH |
2089 | return 0; |
2090 | } | |
14a5cf38 | 2091 | while (count > 0) { |
93c2c2ec IZ |
2092 | get_cnt: |
2093 | { | |
14a5cf38 JH |
2094 | SSize_t avail = PerlIO_get_cnt(f); |
2095 | SSize_t take = 0; | |
2096 | if (avail > 0) | |
94e529cc | 2097 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; |
14a5cf38 JH |
2098 | if (take > 0) { |
2099 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2100 | Copy(ptr, buf, take, STDCHAR); | |
2101 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2102 | count -= take; | |
2103 | buf += take; | |
93c2c2ec IZ |
2104 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2105 | goto get_cnt; | |
14a5cf38 JH |
2106 | } |
2107 | if (count > 0 && avail <= 0) { | |
2108 | if (PerlIO_fill(f) != 0) | |
2109 | break; | |
2110 | } | |
93c2c2ec | 2111 | } |
14a5cf38 JH |
2112 | } |
2113 | return (buf - (STDCHAR *) vbuf); | |
2114 | } | |
f6c77cf1 | 2115 | return 0; |
f6c77cf1 NIS |
2116 | } |
2117 | ||
9e353e3b | 2118 | IV |
f62ce20a | 2119 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2120 | { |
96a5add6 | 2121 | PERL_UNUSED_CONTEXT; |
8772537c | 2122 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2123 | return 0; |
9e353e3b NIS |
2124 | } |
2125 | ||
2126 | IV | |
f62ce20a | 2127 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2128 | { |
96a5add6 | 2129 | PERL_UNUSED_CONTEXT; |
8772537c | 2130 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2131 | return -1; |
06da4f11 NIS |
2132 | } |
2133 | ||
2134 | IV | |
f62ce20a | 2135 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2136 | { |
37725cdc NIS |
2137 | IV code = -1; |
2138 | if (PerlIOValid(f)) { | |
2139 | PerlIO *n = PerlIONext(f); | |
2140 | code = PerlIO_flush(f); | |
2141 | PerlIOBase(f)->flags &= | |
2142 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2143 | while (PerlIOValid(n)) { | |
de009b76 | 2144 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2145 | if (tab && tab->Close) { |
2146 | if ((*tab->Close)(aTHX_ n) != 0) | |
2147 | code = -1; | |
2148 | break; | |
2149 | } | |
2150 | else { | |
2151 | PerlIOBase(n)->flags &= | |
2152 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2153 | } | |
2154 | n = PerlIONext(n); | |
2155 | } | |
2156 | } | |
2157 | else { | |
2158 | SETERRNO(EBADF, SS_IVCHAN); | |
2159 | } | |
14a5cf38 | 2160 | return code; |
9e353e3b NIS |
2161 | } |
2162 | ||
2163 | IV | |
f62ce20a | 2164 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2165 | { |
96a5add6 | 2166 | PERL_UNUSED_CONTEXT; |
04892f78 | 2167 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2168 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2169 | } | |
2170 | return 1; | |
9e353e3b NIS |
2171 | } |
2172 | ||
2173 | IV | |
f62ce20a | 2174 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2175 | { |
96a5add6 | 2176 | PERL_UNUSED_CONTEXT; |
04892f78 | 2177 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2178 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2179 | } | |
2180 | return 1; | |
9e353e3b NIS |
2181 | } |
2182 | ||
2183 | void | |
f62ce20a | 2184 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2185 | { |
04892f78 | 2186 | if (PerlIOValid(f)) { |
dcda55fc | 2187 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2188 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2189 | if (PerlIOValid(n)) |
14a5cf38 JH |
2190 | PerlIO_clearerr(n); |
2191 | } | |
9e353e3b NIS |
2192 | } |
2193 | ||
2194 | void | |
f62ce20a | 2195 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2196 | { |
96a5add6 | 2197 | PERL_UNUSED_CONTEXT; |
04892f78 | 2198 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2199 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2200 | } | |
9e353e3b NIS |
2201 | } |
2202 | ||
93a8090d NIS |
2203 | SV * |
2204 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2205 | { | |
2206 | if (!arg) | |
a0714e2c | 2207 | return NULL; |
24d147a6 | 2208 | #ifdef USE_ITHREADS |
93a8090d | 2209 | if (param) { |
a951d81d BL |
2210 | arg = sv_dup(arg, param); |
2211 | SvREFCNT_inc_simple_void_NN(arg); | |
2212 | return arg; | |
93a8090d NIS |
2213 | } |
2214 | else { | |
2215 | return newSVsv(arg); | |
2216 | } | |
2217 | #else | |
1b6737cc | 2218 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2219 | return newSVsv(arg); |
2220 | #endif | |
2221 | } | |
2222 | ||
2223 | PerlIO * | |
ecdeb87c | 2224 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2225 | { |
1b6737cc | 2226 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2227 | if (PerlIOValid(nexto)) { |
de009b76 | 2228 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2229 | if (tab && tab->Dup) |
2230 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2231 | else | |
2232 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2233 | } |
2234 | if (f) { | |
dcda55fc | 2235 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
a951d81d | 2236 | SV *arg = NULL; |
93a8090d | 2237 | char buf[8]; |
316ebaf2 | 2238 | assert(self); |
e17bc05a TC |
2239 | DEBUG_i(PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2240 | self->name, | |
2241 | (void*)f, (void*)o, (void*)param) ); | |
27e6dabe JH |
2242 | if (self->Getarg) |
2243 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
93a8090d | 2244 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); |
df8c7dee | 2245 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) |
f0720f70 | 2246 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
ef8d46e8 | 2247 | SvREFCNT_dec(arg); |
93a8090d NIS |
2248 | } |
2249 | return f; | |
2250 | } | |
2251 | ||
27da23d5 | 2252 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2253 | |
8b84d7dd | 2254 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 | 2255 | static void |
ff25d7bc JH |
2256 | S_more_refcounted_fds(pTHX_ const int new_fd) |
2257 | PERL_TSA_REQUIRES(PL_perlio_mutex) | |
2258 | { | |
7a89be66 | 2259 | dVAR; |
22c96fc1 | 2260 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2261 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2262 | int *new_array; |
2263 | ||
dd791c72 JH |
2264 | #ifndef PERL_IMPLICIT_SYS |
2265 | PERL_UNUSED_CONTEXT; | |
2266 | #endif | |
2267 | ||
e17bc05a TC |
2268 | DEBUG_i( PerlIO_debug("More fds - old=%d, need %d, new=%d\n", |
2269 | old_max, new_fd, new_max) ); | |
22c96fc1 NC |
2270 | |
2271 | if (new_fd < old_max) { | |
2272 | return; | |
2273 | } | |
2274 | ||
f4ae5be6 NC |
2275 | assert (new_max > new_fd); |
2276 | ||
eae082a0 JH |
2277 | /* Use plain realloc() since we need this memory to be really |
2278 | * global and visible to all the interpreters and/or threads. */ | |
2279 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2280 | |
2281 | if (!new_array) { | |
6cb8cb21 | 2282 | MUTEX_UNLOCK(&PL_perlio_mutex); |
4cbe3a7d | 2283 | croak_no_mem(); |
22c96fc1 NC |
2284 | } |
2285 | ||
2286 | PL_perlio_fd_refcnt_size = new_max; | |
2287 | PL_perlio_fd_refcnt = new_array; | |
2288 | ||
e17bc05a TC |
2289 | DEBUG_i( PerlIO_debug("Zeroing %p, %d\n", |
2290 | (void*)(new_array + old_max), | |
2291 | new_max - old_max) ); | |
22c96fc1 NC |
2292 | |
2293 | Zero(new_array + old_max, new_max - old_max, int); | |
2294 | } | |
2295 | ||
2296 | ||
93a8090d NIS |
2297 | void |
2298 | PerlIO_init(pTHX) | |
2299 | { | |
8b84d7dd | 2300 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2301 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2302 | } |
2303 | ||
168d5872 NIS |
2304 | void |
2305 | PerlIOUnix_refcnt_inc(int fd) | |
2306 | { | |
27da23d5 | 2307 | dTHX; |
22c96fc1 | 2308 | if (fd >= 0) { |
97aff369 | 2309 | dVAR; |
22c96fc1 | 2310 | |
6cb8cb21 | 2311 | MUTEX_LOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2312 | if (fd >= PL_perlio_fd_refcnt_size) |
2313 | S_more_refcounted_fds(aTHX_ fd); | |
2314 | ||
27da23d5 | 2315 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd | 2316 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
12605ff9 | 2317 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd RGS |
2318 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", |
2319 | fd, PL_perlio_fd_refcnt[fd]); | |
2320 | } | |
e17bc05a TC |
2321 | DEBUG_i( PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", |
2322 | fd, PL_perlio_fd_refcnt[fd]) ); | |
22c96fc1 | 2323 | |
6cb8cb21 | 2324 | MUTEX_UNLOCK(&PL_perlio_mutex); |
8b84d7dd | 2325 | } else { |
12605ff9 | 2326 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
8b84d7dd | 2327 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); |
168d5872 NIS |
2328 | } |
2329 | } | |
2330 | ||
168d5872 NIS |
2331 | int |
2332 | PerlIOUnix_refcnt_dec(int fd) | |
2333 | { | |
2334 | int cnt = 0; | |
22c96fc1 | 2335 | if (fd >= 0) { |
e17bc05a TC |
2336 | #ifdef DEBUGGING |
2337 | dTHX; | |
2338 | #else | |
97aff369 | 2339 | dVAR; |
e17bc05a | 2340 | #endif |
6cb8cb21 | 2341 | MUTEX_LOCK(&PL_perlio_mutex); |
8b84d7dd | 2342 | if (fd >= PL_perlio_fd_refcnt_size) { |
12605ff9 | 2343 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2344 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", |
8b84d7dd RGS |
2345 | fd, PL_perlio_fd_refcnt_size); |
2346 | } | |
2347 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
12605ff9 | 2348 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2349 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", |
8b84d7dd RGS |
2350 | fd, PL_perlio_fd_refcnt[fd]); |
2351 | } | |
27da23d5 | 2352 | cnt = --PL_perlio_fd_refcnt[fd]; |
e17bc05a | 2353 | DEBUG_i( PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt) ); |
6cb8cb21 | 2354 | MUTEX_UNLOCK(&PL_perlio_mutex); |
8b84d7dd | 2355 | } else { |
12605ff9 | 2356 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2bcd6579 | 2357 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); |
168d5872 NIS |
2358 | } |
2359 | return cnt; | |
2360 | } | |
2361 | ||
2e0cfa16 FC |
2362 | int |
2363 | PerlIOUnix_refcnt(int fd) | |
2364 | { | |
2365 | dTHX; | |
2366 | int cnt = 0; | |
2367 | if (fd >= 0) { | |
2368 | dVAR; | |
2e0cfa16 | 2369 | MUTEX_LOCK(&PL_perlio_mutex); |
2e0cfa16 FC |
2370 | if (fd >= PL_perlio_fd_refcnt_size) { |
2371 | /* diag_listed_as: refcnt: fd %d%s */ | |
2372 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2373 | fd, PL_perlio_fd_refcnt_size); | |
2374 | } | |
2375 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2376 | /* diag_listed_as: refcnt: fd %d%s */ | |
2377 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2378 | fd, PL_perlio_fd_refcnt[fd]); | |
2379 | } | |
2380 | cnt = PL_perlio_fd_refcnt[fd]; | |
2e0cfa16 | 2381 | MUTEX_UNLOCK(&PL_perlio_mutex); |
2e0cfa16 FC |
2382 | } else { |
2383 | /* diag_listed_as: refcnt: fd %d%s */ | |
2384 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2385 | } | |
2386 | return cnt; | |
2387 | } | |
2388 | ||
694c95cf JH |
2389 | void |
2390 | PerlIO_cleanup(pTHX) | |
2391 | { | |
2392 | int i; | |
2393 | #ifdef USE_ITHREADS | |
e17bc05a | 2394 | DEBUG_i( PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX) ); |
9f4bd222 | 2395 | #else |
e17bc05a | 2396 | DEBUG_i( PerlIO_debug("Cleanup layers\n") ); |
694c95cf | 2397 | #endif |
e47547a8 | 2398 | |
694c95cf JH |
2399 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2400 | for (i=0; i < 3; i++) | |
2401 | PerlIOUnix_refcnt_inc(i); | |
2402 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2403 | /* Restore STDIN..STDERR refcount */ | |
2404 | for (i=0; i < 3; i++) | |
2405 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2406 | |
2407 | if (PL_known_layers) { | |
2408 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2409 | PL_known_layers = NULL; | |
2410 | } | |
27da23d5 | 2411 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2412 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2413 | PL_def_layerlist = NULL; | |
2414 | } | |
6cb8cb21 RGS |
2415 | } |
2416 | ||
0934c9d9 | 2417 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2418 | { |
53d44271 | 2419 | dVAR; |
4f3da17a DM |
2420 | #if 0 |
2421 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2422 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2423 | being present (at least in win32) :-(. | |
2424 | Disable for now. | |
2425 | */ | |
6cb8cb21 RGS |
2426 | #ifdef DEBUGGING |
2427 | { | |
2428 | /* By now all filehandles should have been closed, so any | |
2429 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2430 | * errors. */ | |
77db880c JH |
2431 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2432 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
2433 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; | |
6cb8cb21 RGS |
2434 | int i; |
2435 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
77db880c JH |
2436 | if (PL_perlio_fd_refcnt[i]) { |
2437 | const STRLEN len = | |
2438 | my_snprintf(buf, sizeof(buf), | |
2439 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2440 | i, PL_perlio_fd_refcnt[i]); | |
2441 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2442 | } | |
6cb8cb21 RGS |
2443 | } |
2444 | } | |
2445 | #endif | |
4f3da17a | 2446 | #endif |
eae082a0 JH |
2447 | /* Not bothering with PL_perlio_mutex since by now |
2448 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2449 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2450 | && PL_perlio_fd_refcnt) { | |
eae082a0 | 2451 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
432ce874 YO |
2452 | PL_perlio_fd_refcnt = NULL; |
2453 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2454 | } |
694c95cf JH |
2455 | } |
2456 | ||
9e353e3b | 2457 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2458 | /* |
71200d45 | 2459 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2460 | */ |
9e353e3b | 2461 | |
14a5cf38 | 2462 | typedef struct { |
22569500 NIS |
2463 | struct _PerlIO base; /* The generic part */ |
2464 | int fd; /* UNIX like file descriptor */ | |
2465 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2466 | } PerlIOUnix; |
2467 | ||
abf9167d DM |
2468 | static void |
2469 | S_lockcnt_dec(pTHX_ const void* f) | |
2470 | { | |
dd791c72 JH |
2471 | #ifndef PERL_IMPLICIT_SYS |
2472 | PERL_UNUSED_CONTEXT; | |
2473 | #endif | |
abf9167d DM |
2474 | PerlIO_lockcnt((PerlIO*)f)--; |
2475 | } | |
2476 | ||
2477 | ||
2478 | /* call the signal handler, and if that handler happens to clear | |
2479 | * this handle, free what we can and return true */ | |
2480 | ||
2481 | static bool | |
2482 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2483 | ENTER; | |
2484 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2485 | PerlIO_lockcnt(f)++; | |
2486 | PERL_ASYNC_CHECK(); | |
be48bbe8 CS |
2487 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
2488 | LEAVE; | |
abf9167d | 2489 | return 0; |
be48bbe8 | 2490 | } |
abf9167d DM |
2491 | /* we've just run some perl-level code that could have done |
2492 | * anything, including closing the file or clearing this layer. | |
2493 | * If so, free any lower layers that have already been | |
2494 | * cleared, then return an error. */ | |
2495 | while (PerlIOValid(f) && | |
2496 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) | |
2497 | { | |
2498 | const PerlIOl *l = *f; | |
2499 | *f = l->next; | |
2500 | Safefree(l); | |
2501 | } | |
be48bbe8 | 2502 | LEAVE; |
abf9167d DM |
2503 | return 1; |
2504 | } | |
2505 | ||
6f9d8c32 | 2506 | int |
9e353e3b | 2507 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2508 | { |
14a5cf38 | 2509 | int oflags = -1; |
3b6c1aba | 2510 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2511 | mode++; |
2512 | switch (*mode) { | |
2513 | case 'r': | |
2514 | oflags = O_RDONLY; | |
2515 | if (*++mode == '+') { | |
2516 | oflags = O_RDWR; | |
2517 | mode++; | |
2518 | } | |
2519 | break; | |
2520 | ||
2521 | case 'w': | |
2522 | oflags = O_CREAT | O_TRUNC; | |
2523 | if (*++mode == '+') { | |
2524 | oflags |= O_RDWR; | |
2525 | mode++; | |
2526 | } | |
2527 | else | |
2528 | oflags |= O_WRONLY; | |
2529 | break; | |
2530 | ||
2531 | case 'a': | |
2532 | oflags = O_CREAT | O_APPEND; | |
2533 | if (*++mode == '+') { | |
2534 | oflags |= O_RDWR; | |
2535 | mode++; | |
2536 | } | |
2537 | else | |
2538 | oflags |= O_WRONLY; | |
2539 | break; | |
2540 | } | |
43e5477e JH |
2541 | |
2542 | /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */ | |
2543 | ||
2544 | /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one | |
2545 | * of them in, and then bit-and-masking the other them away, won't | |
2546 | * have much of an effect. */ | |
2547 | switch (*mode) { | |
2548 | case 'b': | |
2549 | #if O_TEXT != O_BINARY | |
2550 | oflags |= O_BINARY; | |
14a5cf38 | 2551 | oflags &= ~O_TEXT; |
43e5477e JH |
2552 | #endif |
2553 | mode++; | |
2554 | break; | |
2555 | case 't': | |
2556 | #if O_TEXT != O_BINARY | |
14a5cf38 JH |
2557 | oflags |= O_TEXT; |
2558 | oflags &= ~O_BINARY; | |
43e5477e JH |
2559 | #endif |
2560 | mode++; | |
2561 | break; | |
2562 | default: | |
2563 | # if O_BINARY != 0 | |
2564 | /* bit-or:ing with zero O_BINARY would be useless. */ | |
93f31ee9 PG |
2565 | /* |
2566 | * If neither "t" nor "b" was specified, open the file | |
2567 | * in O_BINARY mode. | |
43e5477e JH |
2568 | * |
2569 | * Note that if something else than the zero byte was seen | |
2570 | * here (e.g. bogus mode "rx"), just few lines later we will | |
2571 | * set the errno and invalidate the flags. | |
93f31ee9 PG |
2572 | */ |
2573 | oflags |= O_BINARY; | |
43e5477e JH |
2574 | # endif |
2575 | break; | |
93f31ee9 | 2576 | } |
14a5cf38 | 2577 | if (*mode || oflags == -1) { |
93189314 | 2578 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2579 | oflags = -1; |
2580 | } | |
2581 | return oflags; | |
9e353e3b NIS |
2582 | } |
2583 | ||
2584 | IV | |
f62ce20a | 2585 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2586 | { |
96a5add6 | 2587 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2588 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2589 | } |
2590 | ||
aa063c35 NIS |
2591 | static void |
2592 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2593 | { |
de009b76 | 2594 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2595 | #if defined(WIN32) |
aa063c35 NIS |
2596 | Stat_t st; |
2597 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2598 | if (!S_ISREG(st.st_mode)) { |
e17bc05a | 2599 | DEBUG_i( PerlIO_debug("%d is not regular file\n",fd) ); |
6caa5a9c NIS |
2600 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2601 | } | |
aa063c35 | 2602 | else { |
e17bc05a | 2603 | DEBUG_i( PerlIO_debug("%d _is_ a regular file\n",fd) ); |
aa063c35 | 2604 | } |
6caa5a9c NIS |
2605 | } |
2606 | #endif | |
aa063c35 NIS |
2607 | s->fd = fd; |
2608 | s->oflags = imode; | |
2609 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2610 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2611 | } |
2612 | ||
2613 | IV | |
2614 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2615 | { | |
2616 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2617 | if (*PerlIONext(f)) { |
4b069b44 | 2618 | /* We never call down so do any pending stuff now */ |
03c0554d | 2619 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2620 | /* |
71200d45 | 2621 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2622 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2623 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2624 | */ |
acbd16bf | 2625 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2626 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2627 | } |
2628 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2629 | |
14a5cf38 | 2630 | return code; |
4b803d04 NIS |
2631 | } |
2632 | ||
c2fcde81 JH |
2633 | IV |
2634 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2635 | { | |
de009b76 | 2636 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2637 | Off_t new_loc; |
96a5add6 | 2638 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2639 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2640 | #ifdef ESPIPE | |
2641 | SETERRNO(ESPIPE, LIB_INVARG); | |
2642 | #else | |
2643 | SETERRNO(EINVAL, LIB_INVARG); | |
2644 | #endif | |
2645 | return -1; | |
2646 | } | |
0723351e NC |
2647 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2648 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2649 | return -1; |
c2fcde81 JH |
2650 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2651 | return 0; | |
2652 | } | |
2653 | ||
9e353e3b | 2654 | PerlIO * |
14a5cf38 JH |
2655 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2656 | IV n, const char *mode, int fd, int imode, | |
2657 | int perm, PerlIO *f, int narg, SV **args) | |
2658 | { | |
884fc2d3 | 2659 | bool known_cloexec = 0; |
d9dac8cd | 2660 | if (PerlIOValid(f)) { |
cc6623a8 | 2661 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2662 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2663 | } |
2664 | if (narg > 0) { | |
3b6c1aba | 2665 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2666 | mode++; |
2667 | else { | |
2668 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 CB |
2669 | #ifdef VMS |
2670 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ | |
2671 | #else | |
14a5cf38 | 2672 | perm = 0666; |
5e2ce0f3 | 2673 | #endif |
14a5cf38 JH |
2674 | } |
2675 | if (imode != -1) { | |
41188aa0 TC |
2676 | STRLEN len; |
2677 | const char *path = SvPV_const(*args, len); | |
2678 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2679 | return NULL; |
884fc2d3 Z |
2680 | fd = PerlLIO_open3_cloexec(path, imode, perm); |
2681 | known_cloexec = 1; | |
14a5cf38 JH |
2682 | } |
2683 | } | |
2684 | if (fd >= 0) { | |
884fc2d3 Z |
2685 | if (known_cloexec) |
2686 | setfd_inhexec_for_sysfd(fd); | |
2687 | else | |
2688 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
3b6c1aba | 2689 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2690 | mode++; |
2691 | if (!f) { | |
2692 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2693 | } |
2694 | if (!PerlIOValid(f)) { | |
a33cf58c | 2695 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
0a20f69b | 2696 | PerlLIO_close(fd); |
a33cf58c NIS |
2697 | return NULL; |
2698 | } | |
d9dac8cd | 2699 | } |
aa063c35 | 2700 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2701 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2702 | if (*mode == IoTYPE_APPEND) |
2703 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2704 | return f; |
2705 | } | |
2706 | else { | |
2707 | if (f) { | |
6f207bd3 | 2708 | NOOP; |
14a5cf38 | 2709 | /* |
71200d45 | 2710 | * FIXME: pop layers ??? |
14a5cf38 JH |
2711 | */ |
2712 | } | |
2713 | return NULL; | |
2714 | } | |
9e353e3b NIS |
2715 | } |
2716 | ||
71200d45 | 2717 | PerlIO * |
ecdeb87c | 2718 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2719 | { |
dcda55fc | 2720 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2721 | int fd = os->fd; |
ecdeb87c | 2722 | if (flags & PERLIO_DUP_FD) { |
884fc2d3 Z |
2723 | fd = PerlLIO_dup_cloexec(fd); |
2724 | if (fd >= 0) | |
2725 | setfd_inhexec_for_sysfd(fd); | |
ecdeb87c | 2726 | } |
22c96fc1 | 2727 | if (fd >= 0) { |
ecdeb87c | 2728 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2729 | if (f) { |
2730 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2731 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2732 | return f; |
2733 | } | |
0a20f69b | 2734 | PerlLIO_close(fd); |
71200d45 NIS |
2735 | } |
2736 | return NULL; | |
2737 | } | |
2738 | ||
2739 | ||
9e353e3b | 2740 | SSize_t |
f62ce20a | 2741 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2742 | { |
abf9167d DM |
2743 | int fd; |
2744 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2745 | return -1; | |
2746 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2747 | #ifdef PERLIO_STD_SPECIAL |
2748 | if (fd == 0) | |
2749 | return PERLIO_STD_IN(fd, vbuf, count); | |
2750 | #endif | |
81428673 | 2751 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2752 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2753 | return 0; |
1fd8f4ce | 2754 | } |
14a5cf38 | 2755 | while (1) { |
b464bac0 | 2756 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2757 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2758 | if (len < 0) { |
2759 | if (errno != EAGAIN) { | |
2760 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2761 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2762 | } |
2763 | } | |
2764 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2765 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2766 | SETERRNO(0,0); |
2767 | } | |
14a5cf38 JH |
2768 | return len; |
2769 | } | |
abf9167d DM |
2770 | /* EINTR */ |
2771 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2772 | return -1; | |
14a5cf38 | 2773 | } |
e5964223 | 2774 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2775 | } |
2776 | ||
2777 | SSize_t | |
f62ce20a | 2778 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2779 | { |
abf9167d DM |
2780 | int fd; |
2781 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
2782 | return -1; | |
2783 | fd = PerlIOSelf(f, PerlIOUnix)->fd; | |
27da23d5 JH |
2784 | #ifdef PERLIO_STD_SPECIAL |
2785 | if (fd == 1 || fd == 2) | |
2786 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2787 | #endif | |
14a5cf38 | 2788 | while (1) { |
de009b76 | 2789 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2790 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2791 | if (len < 0) { |
2792 | if (errno != EAGAIN) { | |
2793 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 2794 | PerlIO_save_errno(f); |
ba85f2ea NIS |
2795 | } |
2796 | } | |
14a5cf38 JH |
2797 | return len; |
2798 | } | |
abf9167d DM |
2799 | /* EINTR */ |
2800 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2801 | return -1; | |
06da4f11 | 2802 | } |
e5964223 | 2803 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2804 | } |
2805 | ||
9e353e3b | 2806 | Off_t |
f62ce20a | 2807 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2808 | { |
96a5add6 AL |
2809 | PERL_UNUSED_CONTEXT; |
2810 | ||
14a5cf38 | 2811 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2812 | } |
2813 | ||
2556f95e GF |
2814 | |
2815 | IV | |
2376d97d | 2816 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2817 | { |
de009b76 | 2818 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2819 | int code = 0; |
168d5872 NIS |
2820 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2821 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2822 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2823 | return 0; | |
22569500 | 2824 | } |
93a8090d NIS |
2825 | } |
2826 | else { | |
93189314 | 2827 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2828 | return -1; |
2829 | } | |
14a5cf38 JH |
2830 | while (PerlLIO_close(fd) != 0) { |
2831 | if (errno != EINTR) { | |
2832 | code = -1; | |
2833 | break; | |
2834 | } | |
abf9167d DM |
2835 | /* EINTR */ |
2836 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2837 | return -1; | |
14a5cf38 JH |
2838 | } |
2839 | if (code == 0) { | |
2840 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2841 | } | |
2842 | return code; | |
9e353e3b NIS |
2843 | } |
2844 | ||
27da23d5 | 2845 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2846 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2847 | "unix", |
2848 | sizeof(PerlIOUnix), | |
2849 | PERLIO_K_RAW, | |
2850 | PerlIOUnix_pushed, | |
2376d97d | 2851 | PerlIOBase_popped, |
14a5cf38 | 2852 | PerlIOUnix_open, |
86e05cf2 | 2853 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2854 | NULL, |
2855 | PerlIOUnix_fileno, | |
71200d45 | 2856 | PerlIOUnix_dup, |
14a5cf38 JH |
2857 | PerlIOUnix_read, |
2858 | PerlIOBase_unread, | |
2859 | PerlIOUnix_write, | |
2860 | PerlIOUnix_seek, | |
2861 | PerlIOUnix_tell, | |
2862 | PerlIOUnix_close, | |
22569500 NIS |
2863 | PerlIOBase_noop_ok, /* flush */ |
2864 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2865 | PerlIOBase_eof, |
2866 | PerlIOBase_error, | |
2867 | PerlIOBase_clearerr, | |
2868 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2869 | NULL, /* get_base */ |
2870 | NULL, /* get_bufsiz */ | |
2871 | NULL, /* get_ptr */ | |
2872 | NULL, /* get_cnt */ | |
2873 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2874 | }; |
2875 | ||
2876 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2877 | /* |
71200d45 | 2878 | * stdio as a layer |
14a5cf38 | 2879 | */ |
9e353e3b | 2880 | |
313e59c8 NIS |
2881 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2882 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2883 | broken by the last second glibc 2.3 fix | |
2884 | */ | |
2885 | #define STDIO_BUFFER_WRITABLE | |
2886 | #endif | |
2887 | ||
2888 | ||
14a5cf38 JH |
2889 | typedef struct { |
2890 | struct _PerlIO base; | |
22569500 | 2891 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2892 | } PerlIOStdio; |
2893 | ||
2894 | IV | |
f62ce20a | 2895 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2896 | { |
96a5add6 AL |
2897 | PERL_UNUSED_CONTEXT; |
2898 | ||
c4420975 AL |
2899 | if (PerlIOValid(f)) { |
2900 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2901 | if (s) | |
2902 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2903 | } |
2904 | errno = EBADF; | |
2905 | return -1; | |
9e353e3b NIS |
2906 | } |
2907 | ||
766a733e | 2908 | char * |
14a5cf38 JH |
2909 | PerlIOStdio_mode(const char *mode, char *tmode) |
2910 | { | |
de009b76 | 2911 | char * const ret = tmode; |
a0625d38 SR |
2912 | if (mode) { |
2913 | while (*mode) { | |
2914 | *tmode++ = *mode++; | |
2915 | } | |
14a5cf38 | 2916 | } |
95005ad8 | 2917 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2918 | *tmode++ = 'b'; |
2919 | #endif | |
14a5cf38 JH |
2920 | *tmode = '\0'; |
2921 | return ret; | |
2922 | } | |
2923 | ||
4b803d04 | 2924 | IV |
2dc2558e | 2925 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2926 | { |
1fd8f4ce NIS |
2927 | PerlIO *n; |
2928 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2929 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2930 | if (toptab == tab) { |
2931 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2932 | PerlIO_pop(aTHX_ f); | |
2933 | return 0; | |
2934 | } else { | |
de009b76 | 2935 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2936 | char tmode[8]; |
2937 | FILE *stdio; | |
81428673 | 2938 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2939 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2940 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2941 | /* We never call down so do any pending stuff now */ | |
2942 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2943 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
81428673 | 2944 | } |
1fd8f4ce NIS |
2945 | else { |
2946 | return -1; | |
2947 | } | |
2948 | } | |
14a5cf38 | 2949 | } |
2dc2558e | 2950 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2951 | } |
2952 | ||
22569500 | 2953 | |
9e353e3b | 2954 | PerlIO * |
4b069b44 | 2955 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2956 | { |
14a5cf38 JH |
2957 | dTHX; |
2958 | PerlIO *f = NULL; | |
ea5bc90f YK |
2959 | #ifdef EBCDIC |
2960 | int rc; | |
2961 | char filename[FILENAME_MAX]; | |
2962 | fldata_t fileinfo; | |
2963 | #endif | |
14a5cf38 | 2964 | if (stdio) { |
22569500 | 2965 | PerlIOStdio *s; |
375ed12a JH |
2966 | int fd0 = fileno(stdio); |
2967 | if (fd0 < 0) { | |
ea5bc90f YK |
2968 | #ifdef EBCDIC |
2969 | rc = fldata(stdio,filename,&fileinfo); | |
2970 | if(rc != 0){ | |
2971 | return NULL; | |
2972 | } | |
2973 | if(fileinfo.__dsorgHFS){ | |
2974 | return NULL; | |
2975 | } | |
2976 | /*This MVS dataset , OK!*/ | |
2977 | #else | |
375ed12a | 2978 | return NULL; |
ea5bc90f | 2979 | #endif |
375ed12a | 2980 | } |
4b069b44 NIS |
2981 | if (!mode || !*mode) { |
2982 | /* We need to probe to see how we can open the stream | |
2983 | so start with read/write and then try write and read | |
2984 | we dup() so that we can fclose without loosing the fd. | |
2985 | ||
2986 | Note that the errno value set by a failing fdopen | |
2987 | varies between stdio implementations. | |
2988 | */ | |
884fc2d3 | 2989 | const int fd = PerlLIO_dup_cloexec(fd0); |
375ed12a JH |
2990 | FILE *f2; |
2991 | if (fd < 0) { | |
2992 | return f; | |
2993 | } | |
2994 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); | |
4b069b44 | 2995 | if (!f2) { |
a33cf58c | 2996 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2997 | } |
2998 | if (!f2) { | |
a33cf58c | 2999 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
3000 | } |
3001 | if (!f2) { | |
3002 | /* Don't seem to be able to open */ | |
3003 | PerlLIO_close(fd); | |
3004 | return f; | |
3005 | } | |
3006 | fclose(f2); | |
22569500 | 3007 | } |
de092133 | 3008 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
3009 | s = PerlIOSelf(f, PerlIOStdio); |
3010 | s->stdio = stdio; | |
884fc2d3 Z |
3011 | fd0 = fileno(stdio); |
3012 | if(fd0 != -1){ | |
3013 | PerlIOUnix_refcnt_inc(fd0); | |
3014 | setfd_cloexec_or_inhexec_by_sysfdness(fd0); | |
3015 | } | |
ea5bc90f | 3016 | #ifdef EBCDIC |
ea5bc90f YK |
3017 | else{ |
3018 | rc = fldata(stdio,filename,&fileinfo); | |
3019 | if(rc != 0){ | |
3020 | PerlIOUnix_refcnt_inc(fd0); | |
3021 | } | |
3022 | if(fileinfo.__dsorgHFS){ | |
3023 | PerlIOUnix_refcnt_inc(fd0); | |
3024 | } | |
3025 | /*This MVS dataset , OK!*/ | |
3026 | } | |
ea5bc90f | 3027 | #endif |
a33cf58c | 3028 | } |
14a5cf38 JH |
3029 | } |
3030 | return f; | |
9e353e3b NIS |
3031 | } |
3032 | ||
3033 | PerlIO * | |
14a5cf38 JH |
3034 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3035 | IV n, const char *mode, int fd, int imode, | |
3036 | int perm, PerlIO *f, int narg, SV **args) | |
3037 | { | |
3038 | char tmode[8]; | |
d9dac8cd | 3039 | if (PerlIOValid(f)) { |
41188aa0 TC |
3040 | STRLEN len; |
3041 | const char * const path = SvPV_const(*args, len); | |
dcda55fc | 3042 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
1751d015 | 3043 | FILE *stdio; |
41188aa0 | 3044 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 3045 | return NULL; |
1751d015 | 3046 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
de092133 JH |
3047 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), |
3048 | s->stdio); | |
14a5cf38 JH |
3049 | if (!s->stdio) |
3050 | return NULL; | |
3051 | s->stdio = stdio; | |
884fc2d3 Z |
3052 | fd = fileno(stdio); |
3053 | PerlIOUnix_refcnt_inc(fd); | |
3054 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
14a5cf38 JH |
3055 | return f; |
3056 | } | |
3057 | else { | |
3058 | if (narg > 0) { | |
41188aa0 TC |
3059 | STRLEN len; |
3060 | const char * const path = SvPV_const(*args, len); | |
3061 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 3062 | return NULL; |
3b6c1aba | 3063 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 | 3064 | mode++; |
884fc2d3 | 3065 | fd = PerlLIO_open3_cloexec(path, imode, perm); |
14a5cf38 JH |
3066 | } |
3067 | else { | |
95005ad8 GH |
3068 | FILE *stdio; |
3069 | bool appended = FALSE; | |
3070 | #ifdef __CYGWIN__ | |
3071 | /* Cygwin wants its 'b' early. */ | |
3072 | appended = TRUE; | |
3073 | mode = PerlIOStdio_mode(mode, tmode); | |
3074 | #endif | |
3075 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 3076 | if (stdio) { |
6f0313ac JH |
3077 | if (!f) { |
3078 | f = PerlIO_allocate(aTHX); | |
3079 | } | |
95005ad8 GH |
3080 | if (!appended) |
3081 | mode = PerlIOStdio_mode(mode, tmode); | |
3082 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3083 | if (f) { | |
0f0f9e2b | 3084 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
884fc2d3 Z |
3085 | fd = fileno(stdio); |
3086 | PerlIOUnix_refcnt_inc(fd); | |
3087 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
0f0f9e2b JH |
3088 | } else { |
3089 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
3090 | } |
3091 | return f; | |
3092 | } | |
3093 | else { | |
3094 | return NULL; | |
3095 | } | |
14a5cf38 JH |
3096 | } |
3097 | } | |
3098 | if (fd >= 0) { | |
3099 | FILE *stdio = NULL; | |
3100 | int init = 0; | |
3b6c1aba | 3101 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3102 | init = 1; |
3103 | mode++; | |
3104 | } | |
3105 | if (init) { | |
3106 | switch (fd) { | |
3107 | case 0: | |
3108 | stdio = PerlSIO_stdin; | |
3109 | break; | |
3110 | case 1: | |
3111 | stdio = PerlSIO_stdout; | |
3112 | break; | |
3113 | case 2: | |
3114 | stdio = PerlSIO_stderr; | |
3115 | break; | |
3116 | } | |
3117 | } | |
3118 | else { | |
3119 | stdio = PerlSIO_fdopen(fd, mode = | |
3120 | PerlIOStdio_mode(mode, tmode)); | |
3121 | } | |
3122 | if (stdio) { | |
d9dac8cd NIS |
3123 | if (!f) { |
3124 | f = PerlIO_allocate(aTHX); | |
3125 | } | |
a33cf58c | 3126 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba | 3127 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
884fc2d3 Z |
3128 | fd = fileno(stdio); |
3129 | PerlIOUnix_refcnt_inc(fd); | |
3130 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
a33cf58c | 3131 | } |
14a5cf38 JH |
3132 | return f; |
3133 | } | |
0a20f69b | 3134 | PerlLIO_close(fd); |
14a5cf38 JH |
3135 | } |
3136 | } | |
ee518936 | 3137 | return NULL; |
9e353e3b NIS |
3138 | } |
3139 | ||
1751d015 | 3140 | PerlIO * |
ecdeb87c | 3141 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3142 | { |
3143 | /* This assumes no layers underneath - which is what | |
3144 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3145 | */ | |
ecdeb87c | 3146 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 3147 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 3148 | const int fd = fileno(stdio); |
9217ff3f | 3149 | char mode[8]; |
ecdeb87c | 3150 | if (flags & PERLIO_DUP_FD) { |
884fc2d3 | 3151 | const int dfd = PerlLIO_dup_cloexec(fileno(stdio)); |
9217ff3f NIS |
3152 | if (dfd >= 0) { |
3153 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3154 | goto set_this; | |
ecdeb87c NIS |
3155 | } |
3156 | else { | |
6f207bd3 | 3157 | NOOP; |
ecdeb87c NIS |
3158 | /* FIXME: To avoid messy error recovery if dup fails |
3159 | re-use the existing stdio as though flag was not set | |
3160 | */ | |
3161 | } | |
3162 | } | |
9217ff3f NIS |
3163 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3164 | set_this: | |
694c95cf | 3165 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 | 3166 | if(stdio) { |
884fc2d3 Z |
3167 | int fd = fileno(stdio); |
3168 | PerlIOUnix_refcnt_inc(fd); | |
3169 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
40596bc5 | 3170 | } |
1751d015 NIS |
3171 | } |
3172 | return f; | |
3173 | } | |
3174 | ||
0d7a5398 NIS |
3175 | static int |
3176 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3177 | { | |
96a5add6 AL |
3178 | PERL_UNUSED_CONTEXT; |
3179 | ||
0d7a5398 | 3180 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3181 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3182 | */ |
36b1c892 AD |
3183 | # if defined(HAS_FDCLOSE) |
3184 | return fdclose(f, NULL) == 0 ? 1 : 0; | |
3185 | # elif defined(__UCLIBC__) | |
ef8eacb8 AT |
3186 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ |
3187 | f->__filedes = -1; | |
3188 | return 1; | |
3189 | # elif defined(__GLIBC__) | |
0d7a5398 | 3190 | /* There may be a better way for GLIBC: |
37725cdc | 3191 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3192 | */ |
3193 | f->_fileno = -1; | |
3194 | return 1; | |
bdea967c | 3195 | # elif defined(__sun) |
f5992bc4 | 3196 | PERL_UNUSED_ARG(f); |
cfedb851 | 3197 | return 0; |
0d7a5398 NIS |
3198 | # elif defined(__hpux) |
3199 | f->__fileH = 0xff; | |
3200 | f->__fileL = 0xff; | |
3201 | return 1; | |
9837d373 | 3202 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3203 | your platform does not have special entry try this one. |
9837d373 NIS |
3204 | [For OSF only have confirmation for Tru64 (alpha) |
3205 | but assume other OSFs will be similar.] | |
37725cdc | 3206 | */ |
9837d373 | 3207 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3208 | f->_file = -1; |
3209 | return 1; | |
3210 | # elif defined(__FreeBSD__) | |
3211 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3212 | - we could insert a dummy func in the _close function entry |
3213 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3214 | */ |
3215 | f->_file = -1; | |
0c49ea6a SU |
3216 | return 1; |
3217 | # elif defined(__OpenBSD__) | |
3218 | /* There may be a better way on OpenBSD: | |
3219 | - we could insert a dummy func in the _close function entry | |
3220 | f->_close = (int (*)(void *)) dummy_close; | |
3221 | */ | |
3222 | f->_file = -1; | |
0d7a5398 | 3223 | return 1; |
59ad941d IZ |
3224 | # elif defined(__EMX__) |
3225 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3226 | f->_handle = -1; | |
3227 | return 1; | |
0d7a5398 NIS |
3228 | # elif defined(__CYGWIN__) |
3229 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3230 | - we could insert a dummy func in the _close function entry |
3231 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3232 | */ |
3233 | f->_file = -1; | |
3234 | return 1; | |
3235 | # elif defined(WIN32) | |
1f664ef5 | 3236 | PERLIO_FILE_file(f) = -1; |
0d7a5398 NIS |
3237 | return 1; |
3238 | # else | |
3239 | #if 0 | |
37725cdc | 3240 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3241 | (which isn't thread safe) instead |
37725cdc | 3242 | */ |
0d7a5398 NIS |
3243 | # error "Don't know how to set FILE.fileno on your platform" |
3244 | #endif | |
8772537c | 3245 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3246 | return 0; |
3247 | # endif | |
3248 | } | |
3249 | ||
1751d015 | 3250 | IV |
f62ce20a | 3251 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3252 | { |
c4420975 | 3253 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3254 | if (!stdio) { |
3255 | errno = EBADF; | |
3256 | return -1; | |
3257 | } | |
9217ff3f | 3258 | else { |
de009b76 | 3259 | const int fd = fileno(stdio); |
0d7a5398 | 3260 | int invalidate = 0; |
bbfd922f | 3261 | IV result = 0; |
1d791a44 | 3262 | int dupfd = -1; |
4ee39169 | 3263 | dSAVEDERRNO; |
a2e578da MHM |
3264 | #ifdef USE_ITHREADS |
3265 | dVAR; | |
3266 | #endif | |
0d7a5398 | 3267 | #ifdef SOCKS5_VERSION_NAME |
37725cdc NIS |
3268 | /* Socks lib overrides close() but stdio isn't linked to |
3269 | that library (though we are) - so we must call close() | |
3270 | on sockets on stdio's behalf. | |
3271 | */ | |
0d7a5398 NIS |
3272 | int optval; |
3273 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3274 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3275 | invalidate = 1; |
0d7a5398 | 3276 | #endif |
d8723f43 NC |
3277 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3278 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3279 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3280 | trying to close an already closed handle which somehow it still has | |
3281 | a reference to. (via.xs, I'm looking at you). */ | |
3282 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3283 | /* File descriptor still in use */ | |
0d7a5398 | 3284 | invalidate = 1; |
d8723f43 | 3285 | } |
0d7a5398 | 3286 | if (invalidate) { |
6b4ce6c8 AL |
3287 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3288 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3289 | return 0; | |
3290 | if (stdio == stdout || stdio == stderr) | |
3291 | return PerlIO_flush(f); | |
d88f7f65 | 3292 | } |
d88f7f65 JH |
3293 | MUTEX_LOCK(&PL_perlio_mutex); |
3294 | /* Right. We need a mutex here because for a brief while we | |
3295 | will have the situation that fd is actually closed. Hence if | |
3296 | a second thread were to get into this block, its dup() would | |
3297 | likely return our fd as its dupfd. (after all, it is closed) | |
3298 | Then if we get to the dup2() first, we blat the fd back | |
3299 | (messing up its temporary as a side effect) only for it to | |
3300 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3301 | ||
3302 | /* There is, of course, a race condition, that any other thread | |
3303 | trying to input/output/whatever on this fd will be stuffed | |
3304 | for the duration of this little manoeuvrer. Perhaps we | |
3305 | should hold an IO mutex for the duration of every IO | |
3306 | operation if we know that invalidate doesn't work on this | |
3307 | platform, but that would suck, and could kill performance. | |
3308 | ||
3309 | Except that correctness trumps speed. | |
3310 | Advice from klortho #11912. */ | |
d88f7f65 | 3311 | if (invalidate) { |
37725cdc NIS |
3312 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3313 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3314 | fileno slot of the FILE * | |
3315 | */ | |
bbfd922f | 3316 | result = PerlIO_flush(f); |
4ee39169 | 3317 | SAVE_ERRNO; |
6b4ce6c8 | 3318 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
711e8db2 | 3319 | if (!invalidate) { |
884fc2d3 | 3320 | dupfd = PerlLIO_dup_cloexec(fd); |
711e8db2 | 3321 | #ifdef USE_ITHREADS |
9bab90c0 | 3322 | if (dupfd < 0) { |
711e8db2 NC |
3323 | /* Oh cXap. This isn't going to go well. Not sure if we can |
3324 | recover from here, or if closing this particular FILE * | |
3325 | is a good idea now. */ | |
3326 | } | |
3327 | #endif | |
3328 | } | |
94ccb807 JH |
3329 | } else { |
3330 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
37725cdc | 3331 | } |
0d7a5398 | 3332 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3333 | /* We treat error from stdio as success if we invalidated |
3334 | errno may NOT be expected EBADF | |
e8529473 NIS |
3335 | */ |
3336 | if (invalidate && result != 0) { | |
4ee39169 | 3337 | RESTORE_ERRNO; |
0d7a5398 | 3338 | result = 0; |
37725cdc | 3339 | } |
6b4ce6c8 AL |
3340 | #ifdef SOCKS5_VERSION_NAME |
3341 | /* in SOCKS' case, let close() determine return value */ | |
3342 | result = close(fd); | |
3343 | #endif | |
1d791a44 | 3344 | if (dupfd >= 0) { |
884fc2d3 Z |
3345 | PerlLIO_dup2_cloexec(dupfd, fd); |
3346 | setfd_inhexec_for_sysfd(fd); | |
9bab90c0 | 3347 | PerlLIO_close(dupfd); |
d88f7f65 | 3348 | } |
d88f7f65 | 3349 | MUTEX_UNLOCK(&PL_perlio_mutex); |
9217ff3f | 3350 | return result; |
37725cdc | 3351 | } |
1751d015 NIS |
3352 | } |
3353 | ||
9e353e3b | 3354 | SSize_t |
f62ce20a | 3355 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3356 | { |
abf9167d | 3357 | FILE * s; |
14a5cf38 | 3358 | SSize_t got = 0; |
abf9167d DM |
3359 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3360 | return -1; | |
3361 | s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
4d948241 NIS |
3362 | for (;;) { |
3363 | if (count == 1) { | |
3364 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3365 | /* | |
3366 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3367 | * stdio does not do that for fread() | |
3368 | */ | |
de009b76 | 3369 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3370 | if (ch != EOF) { |
3371 | *buf = ch; | |
3372 | got = 1; | |
3373 | } | |
14a5cf38 | 3374 | } |
4d948241 NIS |
3375 | else |
3376 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3377 | if (got == 0 && PerlSIO_ferror(s)) |
3378 | got = -1; | |
42a7a32f | 3379 | if (got >= 0 || errno != EINTR) |
4d948241 | 3380 | break; |
abf9167d DM |
3381 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3382 | return -1; | |
42a7a32f | 3383 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3384 | } |
bdae4172 JH |
3385 | #ifdef __sgi |
3386 | /* Under some circumstances IRIX stdio fgetc() and fread() | |
3387 | * set the errno to ENOENT, which makes no sense according | |
3388 | * to either IRIX or POSIX. [rt.perl.org #123977] */ | |
3389 | if (errno == ENOENT) SETERRNO(0,0); | |
3390 | #endif | |
14a5cf38 | 3391 | return got; |
9e353e3b NIS |
3392 | } |
3393 | ||
3394 | SSize_t | |
f62ce20a | 3395 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3396 | { |
14a5cf38 | 3397 | SSize_t unread = 0; |
c4420975 | 3398 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3399 | |
313e59c8 | 3400 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3401 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3402 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3403 | STDCHAR *base = PerlIO_get_base(f); | |
3404 | SSize_t cnt = PerlIO_get_cnt(f); | |
3405 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3406 | SSize_t avail = ptr - base; | |
3407 | if (avail > 0) { | |
3408 | if (avail > count) { | |
3409 | avail = count; | |
3410 | } | |
3411 | ptr -= avail; | |
3412 | Move(buf-avail,ptr,avail,STDCHAR); | |
3413 | count -= avail; | |
3414 | unread += avail; | |
3415 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3416 | if (PerlSIO_feof(s) && unread >= 0) |
3417 | PerlSIO_clearerr(s); | |
3418 | } | |
3419 | } | |
313e59c8 NIS |
3420 | else |
3421 | #endif | |
3422 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3423 | /* We can get pointer to buffer but not its base |
3424 | Do ungetc() but check chars are ending up in the | |
3425 | buffer | |
3426 | */ | |
3427 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3428 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3429 | while (count > 0) { | |
de009b76 | 3430 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3431 | if (ungetc(ch,s) != ch) { |
3432 | /* ungetc did not work */ | |
3433 | break; | |
3434 | } | |
3435 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3436 | /* Did not change pointer as expected */ | |
375ed12a JH |
3437 | if (fgetc(s) != EOF) /* get char back again */ |
3438 | break; | |
9f7cd136 NIS |
3439 | } |
3440 | /* It worked ! */ | |
3441 | count--; | |
3442 | unread++; | |
93679785 NIS |
3443 | } |
3444 | } | |
3445 | ||
3446 | if (count > 0) { | |
3447 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3448 | } |
3449 | return unread; | |
9e353e3b NIS |
3450 | } |
3451 | ||
3452 | SSize_t | |
f62ce20a | 3453 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3454 | { |
4d948241 | 3455 | SSize_t got; |
abf9167d DM |
3456 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3457 | return -1; | |
4d948241 NIS |
3458 | for (;;) { |
3459 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3460 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3461 | if (got >= 0 || errno != EINTR) |
4d948241 | 3462 | break; |
abf9167d DM |
3463 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3464 | return -1; | |
42a7a32f | 3465 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3466 | } |
3467 | return got; | |
9e353e3b NIS |
3468 | } |
3469 | ||
94a175e1 | 3470 | IV |
f62ce20a | 3471 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3472 | { |
c4420975 | 3473 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3474 | PERL_UNUSED_CONTEXT; |
3475 | ||
94a175e1 | 3476 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3477 | } |
3478 | ||
3479 | Off_t | |
f62ce20a | 3480 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3481 | { |
c4420975 | 3482 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3483 | PERL_UNUSED_CONTEXT; |
3484 | ||
94a175e1 | 3485 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3486 | } |
3487 | ||
3488 | IV | |
f62ce20a | 3489 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3490 | { |
c4420975 | 3491 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3492 | PERL_UNUSED_CONTEXT; |
3493 | ||
14a5cf38 JH |
3494 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3495 | return PerlSIO_fflush(stdio); | |
3496 | } | |
3497 | else { | |
6f207bd3 | 3498 | NOOP; |
88b61e10 | 3499 | #if 0 |
14a5cf38 JH |
3500 | /* |
3501 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3502 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3503 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3504 | * layer read-to-read |
14a5cf38 JH |
3505 | */ |
3506 | /* | |
71200d45 | 3507 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3508 | */ |
4ee39169 | 3509 | dSAVE_ERRNO; |
14a5cf38 | 3510 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
4ee39169 | 3511 | RESTORE_ERRNO; |
88b61e10 | 3512 | #endif |
14a5cf38 JH |
3513 | } |
3514 | return 0; | |
9e353e3b NIS |
3515 | } |
3516 | ||
3517 | IV | |
f62ce20a | 3518 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3519 | { |
96a5add6 AL |
3520 | PERL_UNUSED_CONTEXT; |
3521 | ||
14a5cf38 | 3522 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3523 | } |
3524 | ||
3525 | IV | |
f62ce20a | 3526 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3527 | { |
96a5add6 AL |
3528 | PERL_UNUSED_CONTEXT; |
3529 | ||
263df5f1 | 3530 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3531 | } |
3532 | ||
3533 | void | |
f62ce20a | 3534 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3535 | { |
96a5add6 AL |
3536 | PERL_UNUSED_CONTEXT; |
3537 | ||
14a5cf38 | 3538 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3539 | } |
3540 | ||
3541 | void | |
f62ce20a | 3542 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3543 | { |
96a5add6 AL |
3544 | PERL_UNUSED_CONTEXT; |
3545 | ||
9e353e3b | 3546 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3547 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3548 | #else |
bd61b366 | 3549 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3550 | #endif |
3551 | } | |
3552 | ||
3553 | #ifdef FILE_base | |
3554 | STDCHAR * | |
f62ce20a | 3555 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3556 | { |
c4420975 | 3557 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3558 | PERL_UNUSED_CONTEXT; |
cc00df79 | 3559 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3560 | } |
3561 | ||
3562 | Size_t | |
f62ce20a | 3563 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3564 | { |
c4420975 | 3565 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3566 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3567 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3568 | } |
3569 | #endif | |
3570 | ||
3571 | #ifdef USE_STDIO_PTR | |
3572 | STDCHAR * | |
f62ce20a | 3573 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3574 | { |
c4420975 | 3575 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3576 | PERL_UNUSED_CONTEXT; |
cc00df79 | 3577 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3578 | } |
3579 | ||
3580 | SSize_t | |
f62ce20a | 3581 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3582 | { |
c4420975 | 3583 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3584 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3585 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3586 | } |
3587 | ||
3588 | void | |
f62ce20a | 3589 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3590 | { |
c4420975 | 3591 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3592 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3593 | if (ptr != NULL) { |
9e353e3b | 3594 | #ifdef STDIO_PTR_LVALUE |
46f05249 JH |
3595 | /* This is a long-standing infamous mess. The root of the |
3596 | * problem is that one cannot know the signedness of char, and | |
3597 | * more precisely the signedness of FILE._ptr. The following | |
3598 | * things have been tried, and they have all failed (across | |
3599 | * different compilers (remember that core needs to to build | |
3600 | * also with c++) and compiler options: | |
3601 | * | |
3602 | * - casting the RHS to (void*) -- works in *some* places | |
3603 | * - casting the LHS to (void*) -- totally unportable | |
3604 | * | |
3605 | * So let's try silencing the warning at least for gcc. */ | |
7347ee54 | 3606 | GCC_DIAG_IGNORE_STMT(-Wpointer-sign); |
d06fc7d4 | 3607 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
7347ee54 | 3608 | GCC_DIAG_RESTORE_STMT; |
9e353e3b | 3609 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
f8a4dbc5 | 3610 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b NIS |
3611 | #endif |
3612 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3613 | /* |
71200d45 | 3614 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3615 | */ |
3616 | return; | |
9e353e3b | 3617 | #endif |
22569500 | 3618 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3619 | PerlProc_abort(); |
22569500 | 3620 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3621 | } |
3622 | /* | |
71200d45 | 3623 | * Now (or only) set cnt |
14a5cf38 | 3624 | */ |
9e353e3b | 3625 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3626 | PerlSIO_set_cnt(stdio, cnt); |
faf55891 | 3627 | #elif (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3628 | PerlSIO_set_ptr(stdio, |
3629 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3630 | cnt)); | |
22569500 | 3631 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3632 | PerlProc_abort(); |
22569500 | 3633 | #endif /* STDIO_CNT_LVALUE */ |
9e353e3b NIS |
3634 | } |
3635 | ||
93679785 | 3636 | |
9e353e3b NIS |
3637 | #endif |
3638 | ||
93679785 NIS |
3639 | IV |
3640 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3641 | { | |
abf9167d | 3642 | FILE * stdio; |
93679785 | 3643 | int c; |
96a5add6 | 3644 | PERL_UNUSED_CONTEXT; |
abf9167d DM |
3645 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
3646 | return -1; | |
3647 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; | |
96a5add6 | 3648 | |
93679785 NIS |
3649 | /* |
3650 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3651 | */ | |
3652 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3653 | if (PerlSIO_fflush(stdio) != 0) | |
3654 | return EOF; | |
3655 | } | |
f3be3723 BL |
3656 | for (;;) { |
3657 | c = PerlSIO_fgetc(stdio); | |
3658 | if (c != EOF) | |
3659 | break; | |
3660 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3661 | return EOF; | |
abf9167d DM |
3662 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) |
3663 | return -1; | |
f3be3723 BL |
3664 | SETERRNO(0,0); |
3665 | } | |
93679785 NIS |
3666 | |
3667 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3668 | |
3669 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3670 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3671 | /* Fake ungetc() to the real buffer in case system's ungetc |
3672 | goes elsewhere | |
3673 | */ | |
3674 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3675 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3676 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3677 | if (ptr == base+1) { | |
3678 | *--ptr = (STDCHAR) c; | |
3679 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3680 | if (PerlSIO_feof(stdio)) | |
3681 | PerlSIO_clearerr(stdio); | |
3682 | return 0; | |
3683 | } | |
3684 | } | |
313e59c8 NIS |
3685 | else |
3686 | #endif | |
3687 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3688 | STDCHAR ch = c; |
3689 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3690 | return 0; | |
3691 | } | |
3692 | } | |
93679785 NIS |
3693 | #endif |
3694 | ||
93679785 | 3695 | /* If buffer snoop scheme above fails fall back to |
9f7cd136 | 3696 | using ungetc(). |
93679785 NIS |
3697 | */ |
3698 | if (PerlSIO_ungetc(c, stdio) != c) | |
3699 | return EOF; | |
5876737a | 3700 | |
93679785 NIS |
3701 | return 0; |
3702 | } | |
3703 | ||
3704 | ||
3705 | ||
27da23d5 | 3706 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3707 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3708 | "stdio", |
3709 | sizeof(PerlIOStdio), | |
86e05cf2 | 3710 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3711 | PerlIOStdio_pushed, |
2376d97d | 3712 | PerlIOBase_popped, |
14a5cf38 | 3713 | PerlIOStdio_open, |
86e05cf2 | 3714 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3715 | NULL, |
3716 | PerlIOStdio_fileno, | |
71200d45 | 3717 | PerlIOStdio_dup, |
14a5cf38 JH |
3718 | PerlIOStdio_read, |
3719 | PerlIOStdio_unread, | |
3720 | PerlIOStdio_write, | |
3721 | PerlIOStdio_seek, | |
3722 | PerlIOStdio_tell, | |
3723 | PerlIOStdio_close, | |
3724 | PerlIOStdio_flush, | |
3725 | PerlIOStdio_fill, | |
3726 | PerlIOStdio_eof, | |
3727 | PerlIOStdio_error, | |
3728 | PerlIOStdio_clearerr, | |
3729 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3730 | #ifdef FILE_base |
14a5cf38 JH |
3731 | PerlIOStdio_get_base, |
3732 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3733 | #else |
14a5cf38 JH |
3734 | NULL, |
3735 | NULL, | |
9e353e3b NIS |
3736 | #endif |
3737 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3738 | PerlIOStdio_get_ptr, |
3739 | PerlIOStdio_get_cnt, | |
15b61c98 | 3740 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3741 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3742 | # else |
3743 | NULL, | |
3744 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3745 | #else | |
3746 | NULL, | |
14a5cf38 JH |
3747 | NULL, |
3748 | NULL, | |
15b61c98 | 3749 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3750 | }; |
3751 | ||
b9d6bf13 JH |
3752 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3753 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3754 | FILE * |
81428673 | 3755 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3756 | { |
e87a358a | 3757 | dTHX; |
81428673 NIS |
3758 | FILE *stdio = NULL; |
3759 | if (PerlIOValid(f)) { | |
3760 | char buf[8]; | |
375ed12a JH |
3761 | int fd = PerlIO_fileno(f); |
3762 | if (fd < 0) { | |
3763 | return NULL; | |
3764 | } | |
81428673 NIS |
3765 | PerlIO_flush(f); |
3766 | if (!mode || !*mode) { | |
3767 | mode = PerlIO_modestr(f, buf); | |
3768 | } | |
3769 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3770 | if (stdio) { | |
3771 | PerlIOl *l = *f; | |
9f75cc58 | 3772 | PerlIO *f2; |
81428673 NIS |
3773 | /* De-link any lower layers so new :stdio sticks */ |
3774 | *f = NULL; | |
a0714e2c | 3775 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3776 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 | 3777 | s->stdio = stdio; |
6b54a403 | 3778 | PerlIOUnix_refcnt_inc(fileno(stdio)); |
81428673 NIS |
3779 | /* Link previous lower layers under new one */ |
3780 | *PerlIONext(f) = l; | |
3781 | } | |
3782 | else { | |
3783 | /* restore layers list */ | |
3784 | *f = l; | |
3785 | } | |
a33cf58c | 3786 | } |
14a5cf38 JH |
3787 | } |
3788 | return stdio; | |
9e353e3b NIS |
3789 | } |
3790 | ||
81428673 | 3791 | |
9e353e3b NIS |
3792 | FILE * |
3793 | PerlIO_findFILE(PerlIO *f) | |
3794 | { | |
14a5cf38 | 3795 | PerlIOl *l = *f; |
bbbc33d0 | 3796 | FILE *stdio; |
14a5cf38 JH |
3797 | while (l) { |
3798 | if (l->tab == &PerlIO_stdio) { | |
3799 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3800 | return s->stdio; | |
3801 | } | |
3802 | l = *PerlIONext(&l); | |
f7e7eb72 | 3803 | } |
4b069b44 | 3804 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3805 | /* However, we're not really exporting a FILE * to someone else (who |
3806 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3807 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3808 | descriptor. We have to do this, because if the loop above returns you |
3809 | the FILE *, then *it* didn't increase any reference count. So there's | |
3810 | only one way to be consistent. */ | |
3811 | stdio = PerlIO_exportFILE(f, NULL); | |
3812 | if (stdio) { | |
3813 | const int fd = fileno(stdio); | |
3814 | if (fd >= 0) | |
3815 | PerlIOUnix_refcnt_dec(fd); | |
3816 | } | |
3817 | return stdio; | |
9e353e3b NIS |
3818 | } |
3819 | ||
b9d6bf13 | 3820 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3821 | void |
3822 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3823 | { | |
22569500 NIS |
3824 | PerlIOl *l; |
3825 | while ((l = *p)) { | |
3826 | if (l->tab == &PerlIO_stdio) { | |
3827 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
2bcd6579 | 3828 | if (s->stdio == f) { /* not in a loop */ |
6b54a403 NC |
3829 | const int fd = fileno(f); |
3830 | if (fd >= 0) | |
3831 | PerlIOUnix_refcnt_dec(fd); | |
2bcd6579 DD |
3832 | { |
3833 | dTHX; | |
3834 | PerlIO_pop(aTHX_ p); | |
3835 | } | |
22569500 NIS |
3836 | return; |
3837 | } | |
3838 | } | |
3839 | p = PerlIONext(p); | |
3840 | } | |
3841 | return; | |
9e353e3b NIS |
3842 | } |
3843 | ||
3844 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3845 | /* |
71200d45 | 3846 | * perlio buffer layer |
14a5cf38 | 3847 | */ |
9e353e3b | 3848 | |
5e2ab84b | 3849 | IV |
2dc2558e | 3850 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3851 | { |
14a5cf38 | 3852 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3853 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3854 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3855 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3856 | } | |
4b069b44 | 3857 | if (*PerlIONext(f)) { |
de009b76 | 3858 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3859 | if (posn != (Off_t) - 1) { |
3860 | b->posn = posn; | |
3861 | } | |
14a5cf38 | 3862 | } |
2dc2558e | 3863 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3864 | } |
3865 | ||
9e353e3b | 3866 | PerlIO * |
14a5cf38 JH |
3867 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3868 | IV n, const char *mode, int fd, int imode, int perm, | |
3869 | PerlIO *f, int narg, SV **args) | |
3870 | { | |
04892f78 | 3871 | if (PerlIOValid(f)) { |
14a5cf38 | 3872 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3873 | PerlIO_funcs *tab = |
3874 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3875 | if (tab && tab->Open) | |
3876 | next = | |
3877 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3878 | next, narg, args); | |
2dc2558e | 3879 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3880 | return NULL; |
3881 | } | |
3882 | } | |
3883 | else { | |
04892f78 | 3884 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3885 | int init = 0; |
3b6c1aba | 3886 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3887 | init = 1; |
3888 | /* | |
71200d45 | 3889 | * mode++; |
14a5cf38 JH |
3890 | */ |
3891 | } | |
67363c0d JH |
3892 | if (tab && tab->Open) |
3893 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3894 | f, narg, args); | |
3895 | else | |
3896 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3897 | if (f) { |
22569500 | 3898 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3899 | /* |
3900 | * if push fails during open, open fails. close will pop us. | |
3901 | */ | |
3902 | PerlIO_close (f); | |
3903 | return NULL; | |
3904 | } else { | |
3905 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3906 | if (init && fd == 2) { |
3907 | /* | |
3908 | * Initial stderr is unbuffered | |
3909 | */ | |
3910 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3911 | } | |
23b84778 IZ |
3912 | #ifdef PERLIO_USING_CRLF |
3913 | # ifdef PERLIO_IS_BINMODE_FD | |
3914 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3915 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3916 | else |
3917 | # endif | |
3918 | /* | |
3919 | * do something about failing setmode()? --jhi | |
3920 | */ | |
3921 | PerlLIO_setmode(fd, O_BINARY); | |
3922 | #endif | |
8c8488cd | 3923 | #ifdef VMS |
8c8488cd CB |
3924 | /* Enable line buffering with record-oriented regular files |
3925 | * so we don't introduce an extraneous record boundary when | |
3926 | * the buffer fills up. | |
3927 | */ | |
3928 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3929 | Stat_t st; | |
3930 | if (PerlLIO_fstat(fd, &st) == 0 | |
3931 | && S_ISREG(st.st_mode) | |
3932 | && (st.st_fab_rfm == FAB$C_VAR | |
3933 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3934 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3935 | } | |
3936 | } | |
3937 | #endif | |
14a5cf38 JH |
3938 | } |
3939 | } | |
ee518936 | 3940 | } |
14a5cf38 | 3941 | return f; |
9e353e3b NIS |
3942 | } |
3943 | ||
14a5cf38 JH |
3944 | /* |
3945 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3946 | * read or write state. For write state, we put the postponed data through |
3947 | * the next layers. For read state, we seek() the next layers to the | |
3948 | * offset given by current position in the buffer, and discard the buffer | |
3949 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3950 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3951 | */ |
9e353e3b | 3952 | IV |
f62ce20a | 3953 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3954 | { |
dcda55fc | 3955 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3956 | int code = 0; |
04892f78 | 3957 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3958 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3959 | /* | |
71200d45 | 3960 | * write() the buffer |
14a5cf38 | 3961 | */ |
de009b76 AL |
3962 | const STDCHAR *buf = b->buf; |
3963 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3964 | while (p < b->ptr) { |
3965 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3966 | if (count > 0) { | |
3967 | p += count; | |
3968 | } | |
3969 | else if (count < 0 || PerlIO_error(n)) { | |
3970 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
0ea86a10 | 3971 | PerlIO_save_errno(f); |
14a5cf38 JH |
3972 | code = -1; |
3973 | break; | |
3974 | } | |
3975 | } | |
3976 | b->posn += (p - buf); | |
3977 | } | |
3978 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3979 | STDCHAR *buf = PerlIO_get_base(f); | |
3980 | /* | |
71200d45 | 3981 | * Note position change |
14a5cf38 JH |
3982 | */ |
3983 | b->posn += (b->ptr - buf); | |
3984 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3985 | /* We did not consume all of it - try and seek downstream to |
3986 | our logical position | |
14a5cf38 | 3987 | */ |
4b069b44 | 3988 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3989 | /* Reload n as some layers may pop themselves on seek */ |
3990 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3991 | } |
ba5c3fe9 | 3992 | else { |
4b069b44 NIS |
3993 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3994 | data is lost for good - so return saying "ok" having undone | |
3995 | the position adjust | |
3996 | */ | |
3997 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3998 | return code; |
3999 | } | |
14a5cf38 JH |
4000 | } |
4001 | } | |
4002 | b->ptr = b->end = b->buf; | |
4003 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 4004 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 4005 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
4006 | code = -1; |
4007 | return code; | |
6f9d8c32 NIS |
4008 | } |
4009 | ||
93c2c2ec IZ |
4010 | /* This discards the content of the buffer after b->ptr, and rereads |
4011 | * the buffer from the position off in the layer downstream; here off | |
4012 | * is at offset corresponding to b->ptr - b->buf. | |
4013 | */ | |
06da4f11 | 4014 | IV |
f62ce20a | 4015 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 4016 | { |
dcda55fc | 4017 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4018 | PerlIO *n = PerlIONext(f); |
4019 | SSize_t avail; | |
4020 | /* | |
4b069b44 NIS |
4021 | * Down-stream flush is defined not to loose read data so is harmless. |
4022 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 4023 | */ |
93c2c2ec | 4024 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
4025 | return -1; |
4026 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 4027 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
4028 | |
4029 | if (!b->buf) | |
22569500 | 4030 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 4031 | |
0f0eef27 | 4032 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4033 | |
14a5cf38 | 4034 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4035 | |
4036 | if (!PerlIOValid(n)) { | |
4037 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4038 | return -1; | |
4039 | } | |
4040 | ||
14a5cf38 JH |
4041 | if (PerlIO_fast_gets(n)) { |
4042 | /* | |
04892f78 | 4043 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
4044 | * ->Read() because that will loop till it gets what we asked for |
4045 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 4046 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
4047 | */ |
4048 | avail = PerlIO_get_cnt(n); | |
4049 | if (avail <= 0) { | |
4050 | avail = PerlIO_fill(n); | |
4051 | if (avail == 0) | |
4052 | avail = PerlIO_get_cnt(n); | |
4053 | else { | |
4054 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4055 | avail = 0; | |
4056 | } | |
4057 | } | |
4058 | if (avail > 0) { | |
4059 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 4060 | const SSize_t cnt = avail; |
eb160463 | 4061 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
4062 | avail = b->bufsiz; |
4063 | Copy(ptr, b->buf, avail, STDCHAR); | |
4064 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4065 | } | |
4066 | } | |
4067 | else { | |
4068 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
4069 | } | |
4070 | if (avail <= 0) { | |
4071 | if (avail == 0) | |
4072 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4073 | else | |
0ea86a10 | 4074 | { |
14a5cf38 | 4075 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
0ea86a10 FC |
4076 | PerlIO_save_errno(f); |
4077 | } | |
14a5cf38 JH |
4078 | return -1; |
4079 | } | |
4080 | b->end = b->buf + avail; | |
4081 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4082 | return 0; | |
06da4f11 NIS |
4083 | } |
4084 | ||
6f9d8c32 | 4085 | SSize_t |
f62ce20a | 4086 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4087 | { |
04892f78 | 4088 | if (PerlIOValid(f)) { |
dcda55fc | 4089 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4090 | if (!b->ptr) |
4091 | PerlIO_get_base(f); | |
f62ce20a | 4092 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4093 | } |
4094 | return 0; | |
6f9d8c32 NIS |
4095 | } |
4096 | ||
9e353e3b | 4097 | SSize_t |
f62ce20a | 4098 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4099 | { |
14a5cf38 | 4100 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4101 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4102 | SSize_t unread = 0; |
4103 | SSize_t avail; | |
4104 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4105 | PerlIO_flush(f); | |
4106 | if (!b->buf) | |
4107 | PerlIO_get_base(f); | |
4108 | if (b->buf) { | |
4109 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
4110 | /* | |
4111 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 4112 | * which have been read back to buffer start |
14a5cf38 JH |
4113 | */ |
4114 | avail = (b->ptr - b->buf); | |
4115 | } | |
4116 | else { | |
4117 | /* | |
4118 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 4119 | * unread |
14a5cf38 JH |
4120 | */ |
4121 | avail = b->bufsiz; | |
4122 | b->end = b->buf + avail; | |
4123 | b->ptr = b->end; | |
4124 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4125 | /* | |
71200d45 | 4126 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
4127 | */ |
4128 | b->posn -= b->bufsiz; | |
4129 | } | |
94e529cc | 4130 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { |
14a5cf38 | 4131 | /* |
71200d45 | 4132 | * If we have space for more than count, just move count |
14a5cf38 JH |
4133 | */ |
4134 | avail = count; | |
4135 | } | |
4136 | if (avail > 0) { | |
4137 | b->ptr -= avail; | |
4138 | buf -= avail; | |
4139 | /* | |
4140 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 4141 | * there |
14a5cf38 JH |
4142 | */ |
4143 | if (buf != b->ptr) { | |
4144 | Copy(buf, b->ptr, avail, STDCHAR); | |
4145 | } | |
4146 | count -= avail; | |
4147 | unread += avail; | |
4148 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4149 | } | |
4150 | } | |
93679785 NIS |
4151 | if (count > 0) { |
4152 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
4153 | } | |
14a5cf38 | 4154 | return unread; |
760ac839 LW |
4155 | } |
4156 | ||
9e353e3b | 4157 | SSize_t |
f62ce20a | 4158 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4159 | { |
de009b76 | 4160 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4161 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4162 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4163 | Size_t written = 0; |
4164 | if (!b->buf) | |
4165 | PerlIO_get_base(f); | |
4166 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4167 | return 0; | |
0678cb22 NIS |
4168 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4169 | if (PerlIO_flush(f) != 0) { | |
4170 | return 0; | |
4171 | } | |
4172 | } | |
ee56a6b9 CS |
4173 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
4174 | flushptr = buf + count; | |
4175 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4176 | --flushptr; | |
4177 | } | |
14a5cf38 JH |
4178 | while (count > 0) { |
4179 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
94e529cc | 4180 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) |
14a5cf38 | 4181 | avail = count; |
ee56a6b9 CS |
4182 | if (flushptr > buf && flushptr <= buf + avail) |
4183 | avail = flushptr - buf; | |
14a5cf38 | 4184 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
4185 | if (avail) { |
4186 | Copy(buf, b->ptr, avail, STDCHAR); | |
4187 | count -= avail; | |
4188 | buf += avail; | |
4189 | written += avail; | |
4190 | b->ptr += avail; | |
4191 | if (buf == flushptr) | |
4192 | PerlIO_flush(f); | |
14a5cf38 JH |
4193 | } |
4194 | if (b->ptr >= (b->buf + b->bufsiz)) | |
abf9167d DM |
4195 | if (PerlIO_flush(f) == -1) |
4196 | return -1; | |
14a5cf38 JH |
4197 | } |
4198 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4199 | PerlIO_flush(f); | |
4200 | return written; | |
9e353e3b NIS |
4201 | } |
4202 | ||
94a175e1 | 4203 | IV |
f62ce20a | 4204 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4205 | { |
14a5cf38 JH |
4206 | IV code; |
4207 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
4208 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4209 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4210 | if (code == 0) { | |
de009b76 | 4211 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4212 | b->posn = PerlIO_tell(PerlIONext(f)); |
4213 | } | |
9e353e3b | 4214 | } |
14a5cf38 | 4215 | return code; |
9e353e3b NIS |
4216 | } |
4217 | ||
4218 | Off_t | |
f62ce20a | 4219 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4220 | { |
dcda55fc | 4221 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4222 | /* |
71200d45 | 4223 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4224 | */ |
4225 | Off_t posn = b->posn; | |
37725cdc | 4226 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4227 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4228 | #if 1 | |
4229 | /* As O_APPEND files are normally shared in some sense it is better | |
4230 | to flush : | |
4231 | */ | |
4232 | PerlIO_flush(f); | |
4233 | #else | |
37725cdc | 4234 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
4235 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
4236 | #endif | |
4237 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
4238 | } | |
14a5cf38 JH |
4239 | if (b->buf) { |
4240 | /* | |
71200d45 | 4241 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
4242 | */ |
4243 | posn += (b->ptr - b->buf); | |
4244 | } | |
4245 | return posn; | |
9e353e3b NIS |
4246 | } |
4247 | ||
4248 | IV | |
44798d05 NIS |
4249 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4250 | { | |
de009b76 AL |
4251 | const IV code = PerlIOBase_popped(aTHX_ f); |
4252 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
4253 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
4254 | Safefree(b->buf); | |
4255 | } | |
dcda55fc | 4256 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4257 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4258 | return code; | |
4259 | } | |
4260 | ||
4261 | IV | |
f62ce20a | 4262 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4263 | { |
de009b76 AL |
4264 | const IV code = PerlIOBase_close(aTHX_ f); |
4265 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4266 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4267 | Safefree(b->buf); |
14a5cf38 | 4268 | } |
dcda55fc | 4269 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4270 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4271 | return code; | |
760ac839 LW |
4272 | } |
4273 | ||
9e353e3b | 4274 | STDCHAR * |
f62ce20a | 4275 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4276 | { |
dcda55fc | 4277 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4278 | if (!b->buf) |
4279 | PerlIO_get_base(f); | |
4280 | return b->ptr; | |
9e353e3b NIS |
4281 | } |
4282 | ||
05d1247b | 4283 | SSize_t |
f62ce20a | 4284 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4285 | { |
dcda55fc | 4286 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4287 | if (!b->buf) |
4288 | PerlIO_get_base(f); | |
4289 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4290 | return (b->end - b->ptr); | |
4291 | return 0; | |
9e353e3b NIS |
4292 | } |
4293 | ||
4294 | STDCHAR * | |
f62ce20a | 4295 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4296 | { |
dcda55fc | 4297 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4298 | PERL_UNUSED_CONTEXT; |
4299 | ||
14a5cf38 JH |
4300 | if (!b->buf) { |
4301 | if (!b->bufsiz) | |
1810cd7c | 4302 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; |
d09f14bf | 4303 | Newx(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4304 | if (!b->buf) { |
4305 | b->buf = (STDCHAR *) & b->oneword; | |
4306 | b->bufsiz = sizeof(b->oneword); | |
4307 | } | |
dcda55fc | 4308 | b->end = b->ptr = b->buf; |
06da4f11 | 4309 | } |
14a5cf38 | 4310 | return b->buf; |
9e353e3b NIS |
4311 | } |
4312 | ||
4313 | Size_t | |
f62ce20a | 4314 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4315 | { |
dcda55fc | 4316 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4317 | if (!b->buf) |
4318 | PerlIO_get_base(f); | |
4319 | return (b->end - b->buf); | |
9e353e3b NIS |
4320 | } |
4321 | ||
4322 | void | |
f62ce20a | 4323 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4324 | { |
dcda55fc | 4325 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4326 | #ifndef DEBUGGING |
4327 | PERL_UNUSED_ARG(cnt); | |
4328 | #endif | |
14a5cf38 JH |
4329 | if (!b->buf) |
4330 | PerlIO_get_base(f); | |
4331 | b->ptr = ptr; | |
b727803b RGS |
4332 | assert(PerlIO_get_cnt(f) == cnt); |
4333 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4334 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4335 | } |
4336 | ||
71200d45 | 4337 | PerlIO * |
ecdeb87c | 4338 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4339 | { |
ecdeb87c | 4340 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4341 | } |
4342 | ||
4343 | ||
4344 | ||
27da23d5 | 4345 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4346 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4347 | "perlio", |
4348 | sizeof(PerlIOBuf), | |
86e05cf2 | 4349 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4350 | PerlIOBuf_pushed, |
44798d05 | 4351 | PerlIOBuf_popped, |
14a5cf38 | 4352 | PerlIOBuf_open, |
86e05cf2 | 4353 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4354 | NULL, |
4355 | PerlIOBase_fileno, | |
71200d45 | 4356 | PerlIOBuf_dup, |
14a5cf38 JH |
4357 | PerlIOBuf_read, |
4358 | PerlIOBuf_unread, | |
4359 | PerlIOBuf_write, | |
4360 | PerlIOBuf_seek, | |
4361 | PerlIOBuf_tell, | |
4362 | PerlIOBuf_close, | |
4363 | PerlIOBuf_flush, | |
4364 | PerlIOBuf_fill, | |
4365 | PerlIOBase_eof, | |
4366 | PerlIOBase_error, | |
4367 | PerlIOBase_clearerr, | |
4368 | PerlIOBase_setlinebuf, | |
4369 | PerlIOBuf_get_base, | |
4370 | PerlIOBuf_bufsiz, | |
4371 | PerlIOBuf_get_ptr, | |
4372 | PerlIOBuf_get_cnt, | |
4373 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4374 | }; |
4375 | ||
66ecd56b | 4376 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4377 | /* |
71200d45 | 4378 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4379 | */ |
5e2ab84b NIS |
4380 | |
4381 | IV | |
f62ce20a | 4382 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4383 | { |
14a5cf38 | 4384 | /* |
71200d45 | 4385 | * Should never happen |
14a5cf38 JH |
4386 | */ |
4387 | PerlIO_flush(f); | |
4388 | return 0; | |
5e2ab84b NIS |
4389 | } |
4390 | ||
4391 | IV | |
f62ce20a | 4392 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4393 | { |
14a5cf38 | 4394 | /* |
71200d45 | 4395 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4396 | */ |
4397 | PerlIO_flush(f); | |
4398 | return PerlIO_close(f); | |
5e2ab84b NIS |
4399 | } |
4400 | ||
94a175e1 | 4401 | IV |
f62ce20a | 4402 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4403 | { |
14a5cf38 | 4404 | /* |
71200d45 | 4405 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4406 | */ |
4407 | PerlIO_flush(f); | |
4408 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4409 | } |
4410 | ||
4411 | ||
4412 | IV | |
f62ce20a | 4413 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4414 | { |
dcda55fc | 4415 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4416 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4417 | Safefree(b->buf); |
14a5cf38 JH |
4418 | b->buf = NULL; |
4419 | } | |
4420 | PerlIO_pop(aTHX_ f); | |
4421 | return 0; | |
5e2ab84b NIS |
4422 | } |
4423 | ||
4424 | void | |
f62ce20a | 4425 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4426 | { |
14a5cf38 JH |
4427 | if (cnt <= 0) { |
4428 | PerlIO_flush(f); | |
4429 | } | |
4430 | else { | |
f62ce20a | 4431 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4432 | } |
5e2ab84b NIS |
4433 | } |
4434 | ||
4435 | IV | |
2dc2558e | 4436 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4437 | { |
de009b76 | 4438 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4439 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4440 | /* |
71200d45 NIS |
4441 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4442 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4443 | */ |
4444 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4445 | (PerlIOBase(PerlIONext(f))-> | |
4446 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4447 | return code; | |
5e2ab84b NIS |
4448 | } |
4449 | ||
4450 | SSize_t | |
f62ce20a | 4451 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4452 | { |
14a5cf38 JH |
4453 | SSize_t avail = PerlIO_get_cnt(f); |
4454 | SSize_t got = 0; | |
94e529cc | 4455 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
14a5cf38 JH |
4456 | avail = count; |
4457 | if (avail > 0) | |
f62ce20a | 4458 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4459 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4460 | const SSize_t more = |
14a5cf38 JH |
4461 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4462 | if (more >= 0 || got == 0) | |
4463 | got += more; | |
4464 | } | |
4465 | return got; | |
5e2ab84b NIS |
4466 | } |
4467 | ||
27da23d5 | 4468 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4469 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4470 | "pending", |
4471 | sizeof(PerlIOBuf), | |
86e05cf2 | 4472 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4473 | PerlIOPending_pushed, |
44798d05 | 4474 | PerlIOBuf_popped, |
14a5cf38 | 4475 | NULL, |
86e05cf2 | 4476 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4477 | NULL, |
4478 | PerlIOBase_fileno, | |
71200d45 | 4479 | PerlIOBuf_dup, |
14a5cf38 JH |
4480 | PerlIOPending_read, |
4481 | PerlIOBuf_unread, | |
4482 | PerlIOBuf_write, | |
4483 | PerlIOPending_seek, | |
4484 | PerlIOBuf_tell, | |
4485 | PerlIOPending_close, | |
4486 | PerlIOPending_flush, | |
4487 | PerlIOPending_fill, | |
4488 | PerlIOBase_eof, | |
4489 | PerlIOBase_error, | |
4490 | PerlIOBase_clearerr, | |
4491 | PerlIOBase_setlinebuf, | |
4492 | PerlIOBuf_get_base, | |
4493 | PerlIOBuf_bufsiz, | |
4494 | PerlIOBuf_get_ptr, | |
4495 | PerlIOBuf_get_cnt, | |
4496 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4497 | }; |
4498 | ||
4499 | ||
4500 | ||
4501 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4502 | /* |
4503 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4504 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4505 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4506 | * |
4507 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4508 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4509 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4510 | * that it ends at c->nl; these two cases can be distinguished by | |
4511 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4512 | * _unread() and _flush() calls. | |
4513 | * It only matters for read operations. | |
66ecd56b NIS |
4514 | */ |
4515 | ||
14a5cf38 | 4516 | typedef struct { |
22569500 NIS |
4517 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4518 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4519 | * buffer */ |
99efab12 NIS |
4520 | } PerlIOCrlf; |
4521 | ||
ff1e3883 JD |
4522 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4523 | * Otherwise the :crlf layer would always revert back to | |
4524 | * raw mode. | |
4525 | */ | |
4526 | static void | |
4527 | S_inherit_utf8_flag(PerlIO *f) | |
4528 | { | |
4529 | PerlIO *g = PerlIONext(f); | |
4530 | if (PerlIOValid(g)) { | |
4531 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4532 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4533 | } | |
4534 | } | |
4535 | } | |
4536 | ||
f5b9d040 | 4537 | IV |
2dc2558e | 4538 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4539 | { |
14a5cf38 JH |
4540 | IV code; |
4541 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4542 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4543 | #if 0 |
e17bc05a | 4544 | DEBUG_i( |
14a5cf38 | 4545 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
6c9570dc | 4546 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
14a5cf38 | 4547 | PerlIOBase(f)->flags); |
e17bc05a | 4548 | ); |
5e2ab84b | 4549 | #endif |
8229d19f | 4550 | { |
5da08ab0 LT |
4551 | /* If the old top layer is a CRLF layer, reactivate it (if |
4552 | * necessary) and remove this new layer from the stack */ | |
8229d19f | 4553 | PerlIO *g = PerlIONext(f); |
7826b36f | 4554 | if (PerlIOValid(g)) { |
8229d19f JH |
4555 | PerlIOl *b = PerlIOBase(g); |
4556 | if (b && b->tab == &PerlIO_crlf) { | |
4557 | if (!(b->flags & PERLIO_F_CRLF)) | |
4558 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4559 | S_inherit_utf8_flag(g); |
8229d19f JH |
4560 | PerlIO_pop(aTHX_ f); |
4561 | return code; | |
7826b36f | 4562 | } |
8229d19f JH |
4563 | } |
4564 | } | |
ff1e3883 | 4565 | S_inherit_utf8_flag(f); |
14a5cf38 | 4566 | return code; |
f5b9d040 NIS |
4567 | } |
4568 | ||
4569 | ||
99efab12 | 4570 | SSize_t |
f62ce20a | 4571 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4572 | { |
dcda55fc | 4573 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4574 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
76e6dc3a | 4575 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4576 | c->nl = NULL; |
4577 | } | |
4578 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4579 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4580 | else { |
4581 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4582 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4583 | SSize_t unread = 0; | |
4584 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4585 | PerlIO_flush(f); | |
4586 | if (!b->buf) | |
4587 | PerlIO_get_base(f); | |
4588 | if (b->buf) { | |
4589 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4590 | b->end = b->ptr = b->buf + b->bufsiz; | |
4591 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4592 | b->posn -= b->bufsiz; | |
4593 | } | |
4594 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4595 | const int ch = *--buf; |
14a5cf38 JH |
4596 | if (ch == '\n') { |
4597 | if (b->ptr - 2 >= b->buf) { | |
76e6dc3a KW |
4598 | *--(b->ptr) = NATIVE_0xa; |
4599 | *--(b->ptr) = NATIVE_0xd; | |
14a5cf38 JH |
4600 | unread++; |
4601 | count--; | |
4602 | } | |
4603 | else { | |
93c2c2ec | 4604 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
76e6dc3a KW |
4605 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4606 | '\r' */ | |
93c2c2ec IZ |
4607 | unread++; |
4608 | count--; | |
14a5cf38 JH |
4609 | } |
4610 | } | |
4611 | else { | |
4612 | *--(b->ptr) = ch; | |
4613 | unread++; | |
4614 | count--; | |
4615 | } | |
4616 | } | |
4617 | } | |
ec1da995 LT |
4618 | if (count > 0) |
4619 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
14a5cf38 JH |
4620 | return unread; |
4621 | } | |
99efab12 NIS |
4622 | } |
4623 | ||
93c2c2ec | 4624 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4625 | SSize_t |
f62ce20a | 4626 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4627 | { |
dcda55fc | 4628 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4629 | if (!b->buf) |
4630 | PerlIO_get_base(f); | |
4631 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4632 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
76e6dc3a | 4633 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { |
23b3c6af | 4634 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; |
14a5cf38 | 4635 | scan: |
76e6dc3a | 4636 | while (nl < b->end && *nl != NATIVE_0xd) |
14a5cf38 | 4637 | nl++; |
76e6dc3a | 4638 | if (nl < b->end && *nl == NATIVE_0xd) { |
14a5cf38 JH |
4639 | test: |
4640 | if (nl + 1 < b->end) { | |
76e6dc3a | 4641 | if (nl[1] == NATIVE_0xa) { |
14a5cf38 JH |
4642 | *nl = '\n'; |
4643 | c->nl = nl; | |
4644 | } | |
4645 | else { | |
4646 | /* | |
71200d45 | 4647 | * Not CR,LF but just CR |
14a5cf38 JH |
4648 | */ |
4649 | nl++; | |
4650 | goto scan; | |
4651 | } | |
4652 | } | |
4653 | else { | |
4654 | /* | |
71200d45 | 4655 | * Blast - found CR as last char in buffer |
14a5cf38 | 4656 | */ |
e87a358a | 4657 | |
14a5cf38 JH |
4658 | if (b->ptr < nl) { |
4659 | /* | |
4660 | * They may not care, defer work as long as | |
71200d45 | 4661 | * possible |
14a5cf38 | 4662 | */ |
a0d1d361 | 4663 | c->nl = nl; |
14a5cf38 JH |
4664 | return (nl - b->ptr); |
4665 | } | |
4666 | else { | |
4667 | int code; | |
22569500 | 4668 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4669 | * flush() is concerned */ |
22569500 | 4670 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4671 | /* Note as we have moved buf up flush's |
4672 | posn += ptr-buf | |
4673 | will naturally make posn point at CR | |
4674 | */ | |
22569500 NIS |
4675 | b->bufsiz--; /* Buffer is thus smaller */ |
4676 | code = PerlIO_fill(f); /* Fetch some more */ | |
4677 | b->bufsiz++; /* Restore size for next time */ | |
4678 | b->buf--; /* Point at space */ | |
4679 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4680 | * off */ |
76e6dc3a | 4681 | *nl = NATIVE_0xd; /* Fill in the CR */ |
14a5cf38 | 4682 | if (code == 0) |
22569500 | 4683 | goto test; /* fill() call worked */ |
14a5cf38 | 4684 | /* |
71200d45 | 4685 | * CR at EOF - just fall through |
14a5cf38 | 4686 | */ |
a0d1d361 | 4687 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4688 | } |
4689 | } | |
4690 | } | |
4691 | } | |
4692 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4693 | } | |
4694 | return 0; | |
99efab12 NIS |
4695 | } |
4696 | ||
4697 | void | |
f62ce20a | 4698 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4699 | { |
dcda55fc AL |
4700 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4701 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4702 | if (!b->buf) |
4703 | PerlIO_get_base(f); | |
4704 | if (!ptr) { | |
a0d1d361 | 4705 | if (c->nl) { |
14a5cf38 | 4706 | ptr = c->nl + 1; |
76e6dc3a | 4707 | if (ptr == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4708 | /* Deferred CR at end of buffer case - we lied about count */ |
22569500 NIS |
4709 | ptr--; |
4710 | } | |
4711 | } | |
14a5cf38 JH |
4712 | else { |
4713 | ptr = b->end; | |
14a5cf38 JH |
4714 | } |
4715 | ptr -= cnt; | |
4716 | } | |
4717 | else { | |
6f207bd3 | 4718 | NOOP; |
3b4bd3fd | 4719 | #if 0 |
14a5cf38 | 4720 | /* |
71200d45 | 4721 | * Test code - delete when it works ... |
14a5cf38 | 4722 | */ |
3b4bd3fd | 4723 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4724 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
76e6dc3a | 4725 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { |
486ec47a | 4726 | /* Deferred CR at end of buffer case - we lied about count */ |
a0d1d361 | 4727 | chk--; |
22569500 | 4728 | } |
14a5cf38 JH |
4729 | chk -= cnt; |
4730 | ||
a0d1d361 | 4731 | if (ptr != chk ) { |
99ef548b | 4732 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
6c9570dc MHM |
4733 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, |
4734 | flags, c->nl, b->end, cnt); | |
14a5cf38 | 4735 | } |
99ef548b | 4736 | #endif |
14a5cf38 JH |
4737 | } |
4738 | if (c->nl) { | |
4739 | if (ptr > c->nl) { | |
4740 | /* | |
71200d45 | 4741 | * They have taken what we lied about |
14a5cf38 | 4742 | */ |
76e6dc3a | 4743 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4744 | c->nl = NULL; |
4745 | ptr++; | |
4746 | } | |
4747 | } | |
4748 | b->ptr = ptr; | |
4749 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4750 | } |
4751 | ||
4752 | SSize_t | |
f62ce20a | 4753 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4754 | { |
14a5cf38 | 4755 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4756 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4757 | else { |
dcda55fc | 4758 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4759 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4760 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4761 | if (!b->buf) |
4762 | PerlIO_get_base(f); | |
4763 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4764 | return 0; | |
4765 | while (buf < ebuf) { | |
dcda55fc | 4766 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4767 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4768 | while (buf < ebuf && b->ptr < eptr) { | |
4769 | if (*buf == '\n') { | |
4770 | if ((b->ptr + 2) > eptr) { | |
4771 | /* | |
71200d45 | 4772 | * Not room for both |
14a5cf38 JH |
4773 | */ |
4774 | PerlIO_flush(f); | |
4775 | break; | |
4776 | } | |
4777 | else { | |
76e6dc3a KW |
4778 | *(b->ptr)++ = NATIVE_0xd; /* CR */ |
4779 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
14a5cf38 JH |
4780 | buf++; |
4781 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4782 | PerlIO_flush(f); | |
4783 | break; | |
4784 | } | |
4785 | } | |
4786 | } | |
4787 | else { | |
dcda55fc | 4788 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4789 | } |
4790 | if (b->ptr >= eptr) { | |
4791 | PerlIO_flush(f); | |
4792 | break; | |
4793 | } | |
4794 | } | |
4795 | } | |
4796 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4797 | PerlIO_flush(f); | |
4798 | return (buf - (STDCHAR *) vbuf); | |
4799 | } | |
99efab12 NIS |
4800 | } |
4801 | ||
4802 | IV | |
f62ce20a | 4803 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4804 | { |
dcda55fc | 4805 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4806 | if (c->nl) { |
76e6dc3a | 4807 | *(c->nl) = NATIVE_0xd; |
14a5cf38 JH |
4808 | c->nl = NULL; |
4809 | } | |
f62ce20a | 4810 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4811 | } |
4812 | ||
86e05cf2 NIS |
4813 | IV |
4814 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4815 | { | |
4816 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4817 | /* In text mode - flush any pending stuff and flip it */ | |
4818 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4819 | #ifndef PERLIO_USING_CRLF | |
4820 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
5fae6dc1 | 4821 | PerlIO_pop(aTHX_ f); |
86e05cf2 NIS |
4822 | #endif |
4823 | } | |
dda4a477 | 4824 | return PerlIOBase_binmode(aTHX_ f); |
86e05cf2 NIS |
4825 | } |
4826 | ||
27da23d5 | 4827 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4828 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4829 | "crlf", |
4830 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4831 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4832 | PerlIOCrlf_pushed, |
44798d05 | 4833 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4834 | PerlIOBuf_open, |
86e05cf2 | 4835 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4836 | NULL, |
4837 | PerlIOBase_fileno, | |
71200d45 | 4838 | PerlIOBuf_dup, |
de009b76 | 4839 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4840 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4841 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4842 | PerlIOBuf_seek, |
4843 | PerlIOBuf_tell, | |
4844 | PerlIOBuf_close, | |
4845 | PerlIOCrlf_flush, | |
4846 | PerlIOBuf_fill, | |
4847 | PerlIOBase_eof, | |
4848 | PerlIOBase_error, | |
4849 | PerlIOBase_clearerr, | |
4850 | PerlIOBase_setlinebuf, | |
4851 | PerlIOBuf_get_base, | |
4852 | PerlIOBuf_bufsiz, | |
4853 | PerlIOBuf_get_ptr, | |
4854 | PerlIOCrlf_get_cnt, | |
4855 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4856 | }; |
4857 | ||
9e353e3b | 4858 | PerlIO * |
e87a358a | 4859 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4860 | { |
a1ea730d | 4861 | if (!PL_perlio) { |
14a5cf38 JH |
4862 | PerlIO_stdstreams(aTHX); |
4863 | } | |
303f2dc3 | 4864 | return (PerlIO*)&PL_perlio[1]; |
9e353e3b NIS |
4865 | } |
4866 | ||
9e353e3b | 4867 | PerlIO * |
e87a358a | 4868 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4869 | { |
a1ea730d | 4870 | if (!PL_perlio) { |
14a5cf38 JH |
4871 | PerlIO_stdstreams(aTHX); |
4872 | } | |
303f2dc3 | 4873 | return (PerlIO*)&PL_perlio[2]; |
9e353e3b NIS |
4874 | } |
4875 | ||
9e353e3b | 4876 | PerlIO * |
e87a358a | 4877 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4878 | { |
a1ea730d | 4879 | if (!PL_perlio) { |
14a5cf38 JH |
4880 | PerlIO_stdstreams(aTHX); |
4881 | } | |
303f2dc3 | 4882 | return (PerlIO*)&PL_perlio[3]; |
9e353e3b NIS |
4883 | } |
4884 | ||
4885 | /*--------------------------------------------------------------------------------------*/ | |
4886 | ||
9e353e3b NIS |
4887 | char * |
4888 | PerlIO_getname(PerlIO *f, char *buf) | |
4889 | { | |
a15cef0c | 4890 | #ifdef VMS |
dbf7dff6 | 4891 | dTHX; |
73d840c0 | 4892 | char *name = NULL; |
7659f319 | 4893 | bool exported = FALSE; |
14a5cf38 | 4894 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4895 | if (!stdio) { |
4896 | stdio = PerlIO_exportFILE(f,0); | |
4897 | exported = TRUE; | |
4898 | } | |
4899 | if (stdio) { | |
14a5cf38 | 4900 | name = fgetname(stdio, buf); |
7659f319 CB |
4901 | if (exported) PerlIO_releaseFILE(f,stdio); |
4902 | } | |
73d840c0 | 4903 | return name; |
a15cef0c | 4904 | #else |
8772537c AL |
4905 | PERL_UNUSED_ARG(f); |
4906 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4907 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4908 | return NULL; |
a15cef0c | 4909 | #endif |
9e353e3b NIS |
4910 | } |
4911 | ||
4912 | ||
4913 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4914 | /* |
4915 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4916 | * terms of above |
14a5cf38 | 4917 | */ |
9e353e3b | 4918 | |
e87a358a NIS |
4919 | #undef PerlIO_fdopen |
4920 | PerlIO * | |
4921 | PerlIO_fdopen(int fd, const char *mode) | |
4922 | { | |
4923 | dTHX; | |
bd61b366 | 4924 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4925 | } |
4926 | ||
4927 | #undef PerlIO_open | |
4928 | PerlIO * | |
4929 | PerlIO_open(const char *path, const char *mode) | |
4930 | { | |
4931 | dTHX; | |
42d9b98d | 4932 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4933 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4934 | } |
4935 | ||
4936 | #undef Perlio_reopen | |
4937 | PerlIO * | |
4938 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4939 | { | |
4940 | dTHX; | |
42d9b98d | 4941 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4942 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4943 | } |
4944 | ||
9e353e3b | 4945 | #undef PerlIO_getc |
6f9d8c32 | 4946 | int |
9e353e3b | 4947 | PerlIO_getc(PerlIO *f) |
760ac839 | 4948 | { |
e87a358a | 4949 | dTHX; |
14a5cf38 | 4950 | STDCHAR buf[1]; |
de009b76 | 4951 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4952 | return (unsigned char) buf[0]; |
4953 | } | |
4954 | return EOF; | |
313ca112 NIS |
4955 | } |
4956 | ||
4957 | #undef PerlIO_ungetc | |
4958 | int | |
4959 | PerlIO_ungetc(PerlIO *f, int ch) | |
4960 | { | |
e87a358a | 4961 | dTHX; |
14a5cf38 JH |
4962 | if (ch != EOF) { |
4963 | STDCHAR buf = ch; | |
4964 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4965 | return ch; | |
4966 | } | |
4967 | return EOF; | |
760ac839 LW |
4968 | } |
4969 | ||
9e353e3b NIS |
4970 | #undef PerlIO_putc |
4971 | int | |
4972 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4973 | { |
e87a358a | 4974 | dTHX; |
14a5cf38 JH |
4975 | STDCHAR buf = ch; |
4976 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4977 | } |
4978 | ||
9e353e3b | 4979 | #undef PerlIO_puts |
760ac839 | 4980 | int |
9e353e3b | 4981 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4982 | { |
e87a358a | 4983 | dTHX; |
dcda55fc | 4984 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4985 | } |
4986 | ||
4987 | #undef PerlIO_rewind | |
4988 | void | |
c78749f2 | 4989 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4990 | { |
e87a358a | 4991 | dTHX; |
14a5cf38 JH |
4992 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4993 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4994 | } |
4995 | ||
4996 | #undef PerlIO_vprintf | |
4997 | int | |
4998 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4999 | { | |
14a5cf38 | 5000 | dTHX; |
53ce71d3 | 5001 | SV * sv; |
b83604b4 | 5002 | const char *s; |
14a5cf38 JH |
5003 | STRLEN len; |
5004 | SSize_t wrote; | |
2cc61e15 | 5005 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5006 | va_list apc; |
5007 | Perl_va_copy(ap, apc); | |
53ce71d3 | 5008 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 5009 | va_end(apc); |
2cc61e15 | 5010 | #else |
53ce71d3 | 5011 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 5012 | #endif |
b83604b4 | 5013 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5014 | wrote = PerlIO_write(f, s, len); |
5015 | SvREFCNT_dec(sv); | |
5016 | return wrote; | |
760ac839 LW |
5017 | } |
5018 | ||
5019 | #undef PerlIO_printf | |
6f9d8c32 | 5020 | int |
14a5cf38 | 5021 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5022 | { |
14a5cf38 JH |
5023 | va_list ap; |
5024 | int result; | |
5025 | va_start(ap, fmt); | |
5026 | result = PerlIO_vprintf(f, fmt, ap); | |
5027 | va_end(ap); | |
5028 | return result; | |
760ac839 LW |
5029 | } |
5030 | ||
5031 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5032 | int |
14a5cf38 | 5033 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5034 | { |
e87a358a | 5035 | dTHX; |
14a5cf38 JH |
5036 | va_list ap; |
5037 | int result; | |
5038 | va_start(ap, fmt); | |
5039 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5040 | va_end(ap); | |
5041 | return result; | |
760ac839 LW |
5042 | } |
5043 | ||
5044 | #undef PerlIO_tmpfile | |
5045 | PerlIO * | |
c78749f2 | 5046 | PerlIO_tmpfile(void) |
760ac839 | 5047 | { |
ae73d7ec TC |
5048 | return PerlIO_tmpfile_flags(0); |
5049 | } | |
5050 | ||
5051 | #define MKOSTEMP_MODES ( O_RDWR | O_CREAT | O_EXCL ) | |
5052 | #define MKOSTEMP_MODE_MASK ( O_ACCMODE | O_CREAT | O_EXCL | O_TRUNC ) | |
5053 | ||
5054 | PerlIO * | |
5055 | PerlIO_tmpfile_flags(int imode) | |
5056 | { | |
dbf7dff6 | 5057 | #ifndef WIN32 |
2941a2e1 | 5058 | dTHX; |
dbf7dff6 | 5059 | #endif |
2941a2e1 | 5060 | PerlIO *f = NULL; |
2941a2e1 | 5061 | #ifdef WIN32 |
04247234 | 5062 | const int fd = win32_tmpfd_mode(imode); |
2941a2e1 JH |
5063 | if (fd >= 0) |
5064 | f = PerlIO_fdopen(fd, "w+b"); | |
74b421cc | 5065 | #elif ! defined(OS2) |
0b99e986 RGS |
5066 | int fd = -1; |
5067 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 5068 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 5069 | SV * sv = NULL; |
e57270be | 5070 | int old_umask = umask(0177); |
ae73d7ec | 5071 | imode &= ~MKOSTEMP_MODE_MASK; |
7299ca58 | 5072 | if (tmpdir && *tmpdir) { |
0b99e986 | 5073 | /* if TMPDIR is set and not empty, we try that first */ |
7299ca58 | 5074 | sv = newSVpv(tmpdir, 0); |
0b99e986 | 5075 | sv_catpv(sv, tempname + 4); |
74b421cc | 5076 | fd = Perl_my_mkostemp_cloexec(SvPVX(sv), imode | O_VMS_DELETEONCLOSE); |
0b99e986 RGS |
5077 | } |
5078 | if (fd < 0) { | |
e40f8e80 | 5079 | SvREFCNT_dec(sv); |
7299ca58 | 5080 | sv = NULL; |
0b99e986 | 5081 | /* else we try /tmp */ |
74b421cc | 5082 | fd = Perl_my_mkostemp_cloexec(tempname, imode | O_VMS_DELETEONCLOSE); |
0b99e986 | 5083 | } |
b7561fc9 BF |
5084 | if (fd < 0) { |
5085 | /* Try cwd */ | |
5086 | sv = newSVpvs("."); | |
5087 | sv_catpv(sv, tempname + 4); | |
74b421cc | 5088 | fd = Perl_my_mkostemp_cloexec(SvPVX(sv), imode | O_VMS_DELETEONCLOSE); |
b7561fc9 | 5089 | } |
60f7fc1e | 5090 | umask(old_umask); |
2941a2e1 | 5091 | if (fd >= 0) { |
ae73d7ec TC |
5092 | /* fdopen() with a numeric mode */ |
5093 | char mode[8]; | |
5094 | int writing = 1; | |
5095 | (void)PerlIO_intmode2str(imode | MKOSTEMP_MODES, mode, &writing); | |
5096 | f = PerlIO_fdopen(fd, mode); | |
2941a2e1 JH |
5097 | if (f) |
5098 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
74b421cc | 5099 | # ifndef VMS |
0b99e986 | 5100 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
74b421cc | 5101 | # endif |
2941a2e1 | 5102 | } |
ef8d46e8 | 5103 | SvREFCNT_dec(sv); |
faf55891 | 5104 | #else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5105 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5106 | |
085e731f CB |
5107 | if (stdio) |
5108 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5109 | ||
2941a2e1 JH |
5110 | #endif /* else WIN32 */ |
5111 | return f; | |
760ac839 LW |
5112 | } |
5113 | ||
0ea86a10 FC |
5114 | void |
5115 | Perl_PerlIO_save_errno(pTHX_ PerlIO *f) | |
5116 | { | |
e9b8343f | 5117 | PERL_UNUSED_CONTEXT; |
0ea86a10 FC |
5118 | if (!PerlIOValid(f)) |
5119 | return; | |
5120 | PerlIOBase(f)->err = errno; | |
5121 | #ifdef VMS | |
5122 | PerlIOBase(f)->os_err = vaxc$errno; | |
5123 | #elif defined(OS2) | |
5124 | PerlIOBase(f)->os_err = Perl_rc; | |
5125 | #elif defined(WIN32) | |
5126 | PerlIOBase(f)->os_err = GetLastError(); | |
5127 | #endif | |
5128 | } | |
5129 | ||
5130 | void | |
5131 | Perl_PerlIO_restore_errno(pTHX_ PerlIO *f) | |
5132 | { | |
e9b8343f | 5133 | PERL_UNUSED_CONTEXT; |
0ea86a10 FC |
5134 | if (!PerlIOValid(f)) |
5135 | return; | |
5136 | SETERRNO(PerlIOBase(f)->err, PerlIOBase(f)->os_err); | |
5137 | #ifdef OS2 | |
5138 | Perl_rc = PerlIOBase(f)->os_err); | |
5139 | #elif defined(WIN32) | |
5140 | SetLastError(PerlIOBase(f)->os_err); | |
5141 | #endif | |
5142 | } | |
5143 | ||
6f9d8c32 NIS |
5144 | #undef HAS_FSETPOS |
5145 | #undef HAS_FGETPOS | |
5146 | ||
760ac839 | 5147 | |
9e353e3b | 5148 | /*======================================================================================*/ |
14a5cf38 | 5149 | /* |
71200d45 NIS |
5150 | * Now some functions in terms of above which may be needed even if we are |
5151 | * not in true PerlIO mode | |
9e353e3b | 5152 | */ |
188f0c84 YO |
5153 | const char * |
5154 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5155 | { | |
8b850bd5 NC |
5156 | const char *direction = NULL; |
5157 | SV *layers; | |
188f0c84 YO |
5158 | /* |
5159 | * Need to supply default layer info from open.pm | |
5160 | */ | |
8b850bd5 NC |
5161 | |
5162 | if (!PL_curcop) | |
5163 | return NULL; | |
5164 | ||
5165 | if (mode && mode[0] != 'r') { | |
5166 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) | |
5167 | direction = "open>"; | |
5168 | } else { | |
5169 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) | |
5170 | direction = "open<"; | |
188f0c84 | 5171 | } |
8b850bd5 NC |
5172 | if (!direction) |
5173 | return NULL; | |
5174 | ||
20439bc7 | 5175 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5176 | |
5177 | assert(layers); | |
5178 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5179 | } |
5180 | ||
9e353e3b | 5181 | |
760ac839 LW |
5182 | #ifndef HAS_FSETPOS |
5183 | #undef PerlIO_setpos | |
5184 | int | |
766a733e | 5185 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5186 | { |
14a5cf38 | 5187 | if (SvOK(pos)) { |
e1a83e70 DD |
5188 | if (f) { |
5189 | dTHX; | |
5190 | STRLEN len; | |
5191 | const Off_t * const posn = (Off_t *) SvPV(pos, len); | |
5192 | if(len == sizeof(Off_t)) | |
5193 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5194 | } | |
14a5cf38 | 5195 | } |
93189314 | 5196 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5197 | return -1; |
760ac839 | 5198 | } |
c411622e | 5199 | #else |
c411622e | 5200 | #undef PerlIO_setpos |
5201 | int | |
766a733e | 5202 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5203 | { |
14a5cf38 | 5204 | if (SvOK(pos)) { |
e1a83e70 DD |
5205 | if (f) { |
5206 | dTHX; | |
5207 | STRLEN len; | |
5208 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); | |
5209 | if(len == sizeof(Fpos_t)) | |
2d4389e4 | 5210 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
e1a83e70 | 5211 | return fsetpos64(f, fpos); |
d9b3e12d | 5212 | #else |
e1a83e70 | 5213 | return fsetpos(f, fpos); |
d9b3e12d | 5214 | #endif |
14a5cf38 | 5215 | } |
766a733e | 5216 | } |
93189314 | 5217 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5218 | return -1; |
c411622e | 5219 | } |
5220 | #endif | |
760ac839 LW |
5221 | |
5222 | #ifndef HAS_FGETPOS | |
5223 | #undef PerlIO_getpos | |
5224 | int | |
766a733e | 5225 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5226 | { |
14a5cf38 JH |
5227 | dTHX; |
5228 | Off_t posn = PerlIO_tell(f); | |
5229 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5230 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5231 | } |
c411622e | 5232 | #else |
c411622e | 5233 | #undef PerlIO_getpos |
5234 | int | |
766a733e | 5235 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5236 | { |
14a5cf38 JH |
5237 | dTHX; |
5238 | Fpos_t fpos; | |
5239 | int code; | |
2d4389e4 | 5240 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5241 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5242 | #else |
14a5cf38 | 5243 | code = fgetpos(f, &fpos); |
d9b3e12d | 5244 | #endif |
14a5cf38 JH |
5245 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5246 | return code; | |
c411622e | 5247 | } |
5248 | #endif | |
760ac839 | 5249 | |
db6e00bd DD |
5250 | /* print a failure format string message to stderr and fail exit the process |
5251 | using only libc without depending on any perl data structures being | |
5252 | initialized. | |
5253 | */ | |
5254 | ||
5255 | void | |
5256 | Perl_noperl_die(const char* pat, ...) | |
5257 | { | |
fc917fff | 5258 | va_list arglist; |
db6e00bd DD |
5259 | PERL_ARGS_ASSERT_NOPERL_DIE; |
5260 | va_start(arglist, pat); | |
5261 | vfprintf(stderr, pat, arglist); | |
5262 | va_end(arglist); | |
5263 | exit(1); | |
5264 | } | |
5265 | ||
9cfa90c0 | 5266 | /* |
14d04a33 | 5267 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5268 | */ |