Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
acde74e1 | 2 | * perlio.c Copyright (c) 1996-2006, Nick Ing-Simmons You may distribute |
14a5cf38 | 3 | * under the terms of either the GNU General Public License or the |
71200d45 | 4 | * Artistic License, as specified in the README file. |
760ac839 LW |
5 | */ |
6 | ||
14a5cf38 | 7 | /* |
d31a8517 AT |
8 | * Hour after hour for nearly three weary days he had jogged up and down, |
9 | * over passes, and through long dales, and across many streams. | |
10 | */ | |
11 | ||
166f8a29 DM |
12 | /* This file contains the functions needed to implement PerlIO, which |
13 | * is Perl's private replacement for the C stdio library. This is used | |
14 | * by default unless you compile with -Uuseperlio or run with | |
15 | * PERLIO=:stdio (but don't do this unless you know what you're doing) | |
16 | */ | |
17 | ||
d31a8517 | 18 | /* |
71200d45 | 19 | * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get |
14a5cf38 | 20 | * at the dispatch tables, even when we do not need it for other reasons. |
71200d45 | 21 | * Invent a dSYS macro to abstract this out |
14a5cf38 | 22 | */ |
7bcba3d4 NIS |
23 | #ifdef PERL_IMPLICIT_SYS |
24 | #define dSYS dTHX | |
25 | #else | |
26 | #define dSYS dNOOP | |
27 | #endif | |
28 | ||
760ac839 | 29 | #define VOIDUSED 1 |
12ae5dfc JH |
30 | #ifdef PERL_MICRO |
31 | # include "uconfig.h" | |
32 | #else | |
b0f06652 VK |
33 | # ifndef USE_CROSS_COMPILE |
34 | # include "config.h" | |
35 | # else | |
36 | # include "xconfig.h" | |
37 | # endif | |
12ae5dfc | 38 | #endif |
760ac839 | 39 | |
6f9d8c32 | 40 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 41 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
14a5cf38 | 42 | /* |
71200d45 | 43 | * #define PerlIO FILE |
14a5cf38 | 44 | */ |
760ac839 LW |
45 | #endif |
46 | /* | |
6f9d8c32 | 47 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 48 | * which are not #defined in perlio.h. |
6f9d8c32 | 49 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
50 | */ |
51 | ||
52 | #include "EXTERN.h" | |
864dbfa3 | 53 | #define PERL_IN_PERLIO_C |
760ac839 LW |
54 | #include "perl.h" |
55 | ||
32af7c23 CL |
56 | #ifdef PERL_IMPLICIT_CONTEXT |
57 | #undef dSYS | |
58 | #define dSYS dTHX | |
59 | #endif | |
60 | ||
0c4f7ff0 NIS |
61 | #include "XSUB.h" |
62 | ||
9cffb111 OS |
63 | #ifdef __Lynx__ |
64 | /* Missing proto on LynxOS */ | |
65 | int mkstemp(char*); | |
66 | #endif | |
67 | ||
1b7a0411 | 68 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 69 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 70 | if (PerlIOValid(f)) { \ |
46c461b5 | 71 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
72 | if (tab && tab->callback) \ |
73 | return (*tab->callback) args; \ | |
74 | else \ | |
75 | return PerlIOBase_ ## base args; \ | |
76 | } \ | |
77 | else \ | |
78 | SETERRNO(EBADF, SS_IVCHAN); \ | |
79 | return failure | |
80 | ||
81 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 82 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 83 | if (PerlIOValid(f)) { \ |
46c461b5 | 84 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
85 | if (tab && tab->callback) \ |
86 | return (*tab->callback) args; \ | |
87 | SETERRNO(EINVAL, LIB_INVARG); \ | |
88 | } \ | |
89 | else \ | |
90 | SETERRNO(EBADF, SS_IVCHAN); \ | |
91 | return failure | |
92 | ||
93 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 94 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 95 | if (PerlIOValid(f)) { \ |
46c461b5 | 96 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
97 | if (tab && tab->callback) \ |
98 | (*tab->callback) args; \ | |
99 | else \ | |
100 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
101 | } \ |
102 | else \ | |
103 | SETERRNO(EBADF, SS_IVCHAN) | |
104 | ||
105 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 106 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 107 | if (PerlIOValid(f)) { \ |
46c461b5 | 108 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
109 | if (tab && tab->callback) \ |
110 | (*tab->callback) args; \ | |
37725cdc NIS |
111 | else \ |
112 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
113 | } \ |
114 | else \ | |
115 | SETERRNO(EBADF, SS_IVCHAN) | |
116 | ||
89a3a251 JH |
117 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
118 | extern int fseeko(FILE *, off_t, int); | |
119 | extern off_t ftello(FILE *); | |
120 | #endif | |
121 | ||
71ab4674 | 122 | #ifndef USE_SFIO |
a0c21aa1 JH |
123 | |
124 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); | |
125 | ||
71ab4674 SP |
126 | int |
127 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
128 | { | |
129 | /* | |
130 | * This used to be contents of do_binmode in doio.c | |
131 | */ | |
132 | #ifdef DOSISH | |
133 | # if defined(atarist) || defined(__MINT__) | |
134 | if (!fflush(fp)) { | |
135 | if (mode & O_BINARY) | |
136 | ((FILE *) fp)->_flag |= _IOBIN; | |
137 | else | |
138 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
139 | return 1; | |
140 | } | |
141 | return 0; | |
142 | # else | |
143 | dTHX; | |
144 | #ifdef NETWARE | |
145 | if (PerlLIO_setmode(fp, mode) != -1) { | |
146 | #else | |
147 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
148 | #endif | |
149 | # if defined(WIN32) && defined(__BORLANDC__) | |
150 | /* | |
151 | * The translation mode of the stream is maintained independent | |
152 | of | |
153 | * the translation mode of the fd in the Borland RTL (heavy | |
154 | * digging through their runtime sources reveal). User has to | |
155 | set | |
156 | * the mode explicitly for the stream (though they don't | |
157 | document | |
158 | * this anywhere). GSAR 97-5-24 | |
159 | */ | |
160 | fseek(fp, 0L, 0); | |
161 | if (mode & O_BINARY) | |
162 | fp->flags |= _F_BIN; | |
163 | else | |
164 | fp->flags &= ~_F_BIN; | |
165 | # endif | |
166 | return 1; | |
167 | } | |
168 | else | |
169 | return 0; | |
170 | # endif | |
171 | #else | |
172 | # if defined(USEMYBINMODE) | |
173 | dTHX; | |
174 | if (my_binmode(fp, iotype, mode) != FALSE) | |
175 | return 1; | |
176 | else | |
177 | return 0; | |
178 | # else | |
179 | PERL_UNUSED_ARG(fp); | |
180 | PERL_UNUSED_ARG(iotype); | |
181 | PERL_UNUSED_ARG(mode); | |
182 | return 1; | |
183 | # endif | |
184 | #endif | |
185 | } | |
186 | #endif /* sfio */ | |
187 | ||
06c7082d | 188 | #ifndef O_ACCMODE |
22569500 | 189 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
190 | #endif |
191 | ||
192 | int | |
193 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
194 | { | |
de009b76 | 195 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
196 | int ix = 0; |
197 | int ptype; | |
198 | switch (result) { | |
199 | case O_RDONLY: | |
200 | ptype = IoTYPE_RDONLY; | |
201 | break; | |
202 | case O_WRONLY: | |
203 | ptype = IoTYPE_WRONLY; | |
204 | break; | |
205 | case O_RDWR: | |
206 | default: | |
207 | ptype = IoTYPE_RDWR; | |
208 | break; | |
209 | } | |
210 | if (writing) | |
211 | *writing = (result != O_RDONLY); | |
212 | ||
213 | if (result == O_RDONLY) { | |
214 | mode[ix++] = 'r'; | |
215 | } | |
216 | #ifdef O_APPEND | |
217 | else if (rawmode & O_APPEND) { | |
218 | mode[ix++] = 'a'; | |
219 | if (result != O_WRONLY) | |
220 | mode[ix++] = '+'; | |
221 | } | |
222 | #endif | |
223 | else { | |
224 | if (result == O_WRONLY) | |
225 | mode[ix++] = 'w'; | |
226 | else { | |
227 | mode[ix++] = 'r'; | |
228 | mode[ix++] = '+'; | |
229 | } | |
230 | } | |
231 | if (rawmode & O_BINARY) | |
232 | mode[ix++] = 'b'; | |
233 | mode[ix] = '\0'; | |
234 | return ptype; | |
235 | } | |
236 | ||
eb73beca NIS |
237 | #ifndef PERLIO_LAYERS |
238 | int | |
239 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
240 | { | |
6874a2de NIS |
241 | if (!names || !*names |
242 | || strEQ(names, ":crlf") | |
243 | || strEQ(names, ":raw") | |
244 | || strEQ(names, ":bytes") | |
245 | ) { | |
14a5cf38 JH |
246 | return 0; |
247 | } | |
248 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
249 | /* | |
71200d45 | 250 | * NOTREACHED |
14a5cf38 JH |
251 | */ |
252 | return -1; | |
eb73beca NIS |
253 | } |
254 | ||
13621cfb NIS |
255 | void |
256 | PerlIO_destruct(pTHX) | |
257 | { | |
258 | } | |
259 | ||
f5b9d040 NIS |
260 | int |
261 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
262 | { | |
92bff44d | 263 | #ifdef USE_SFIO |
8772537c AL |
264 | PERL_UNUSED_ARG(iotype); |
265 | PERL_UNUSED_ARG(mode); | |
266 | PERL_UNUSED_ARG(names); | |
14a5cf38 | 267 | return 1; |
92bff44d | 268 | #else |
14a5cf38 | 269 | return perlsio_binmode(fp, iotype, mode); |
92bff44d | 270 | #endif |
f5b9d040 | 271 | } |
60382766 | 272 | |
e0fa5af2 | 273 | PerlIO * |
ecdeb87c | 274 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 275 | { |
a0fd4948 | 276 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
277 | return NULL; |
278 | #else | |
279 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 280 | return PerlSIO_fdupopen(f); |
0553478e | 281 | #else |
30753f56 NIS |
282 | #ifdef WIN32 |
283 | return win32_fdupopen(f); | |
284 | #else | |
e0fa5af2 | 285 | if (f) { |
504618e9 | 286 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 287 | if (fd >= 0) { |
06c7082d | 288 | char mode[8]; |
a5936e02 | 289 | #ifdef DJGPP |
dcda55fc AL |
290 | const int omode = djgpp_get_stream_mode(f); |
291 | #else | |
292 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 293 | #endif |
06c7082d | 294 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 295 | /* the r+ is a hack */ |
06c7082d | 296 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
297 | } |
298 | return NULL; | |
299 | } | |
300 | else { | |
93189314 | 301 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 302 | } |
7114a2d2 | 303 | #endif |
e0fa5af2 | 304 | return NULL; |
0553478e | 305 | #endif |
30753f56 | 306 | #endif |
e0fa5af2 NIS |
307 | } |
308 | ||
309 | ||
14a5cf38 | 310 | /* |
71200d45 | 311 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 312 | */ |
ee518936 NIS |
313 | |
314 | PerlIO * | |
14a5cf38 JH |
315 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
316 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
317 | { | |
7cf31beb NIS |
318 | if (narg) { |
319 | if (narg > 1) { | |
3b8752bb | 320 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 321 | } |
14a5cf38 JH |
322 | if (*args == &PL_sv_undef) |
323 | return PerlIO_tmpfile(); | |
324 | else { | |
e62f0680 | 325 | const char *name = SvPV_nolen_const(*args); |
3b6c1aba | 326 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
327 | fd = PerlLIO_open3(name, imode, perm); |
328 | if (fd >= 0) | |
de009b76 | 329 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
330 | } |
331 | else if (old) { | |
332 | return PerlIO_reopen(name, mode, old); | |
333 | } | |
334 | else { | |
335 | return PerlIO_open(name, mode); | |
336 | } | |
337 | } | |
338 | } | |
339 | else { | |
340 | return PerlIO_fdopen(fd, (char *) mode); | |
341 | } | |
342 | return NULL; | |
ee518936 NIS |
343 | } |
344 | ||
0c4f7ff0 NIS |
345 | XS(XS_PerlIO__Layer__find) |
346 | { | |
14a5cf38 JH |
347 | dXSARGS; |
348 | if (items < 2) | |
349 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
350 | else { | |
dcda55fc | 351 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
352 | ST(0) = (strEQ(name, "crlf") |
353 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
354 | XSRETURN(1); | |
355 | } | |
0c4f7ff0 NIS |
356 | } |
357 | ||
358 | ||
359 | void | |
360 | Perl_boot_core_PerlIO(pTHX) | |
361 | { | |
14a5cf38 | 362 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
363 | } |
364 | ||
ac27b0f5 NIS |
365 | #endif |
366 | ||
32e30700 | 367 | |
6f9d8c32 | 368 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
369 | |
370 | void | |
e8632036 | 371 | PerlIO_init(pTHX) |
760ac839 | 372 | { |
96a5add6 | 373 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
374 | /* |
375 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 376 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 377 | * that may be required by loadable extensions e.g. for |
71200d45 | 378 | * FileHandle::tmpfile |
14a5cf38 | 379 | */ |
760ac839 LW |
380 | } |
381 | ||
33dcbb9a | 382 | #undef PerlIO_tmpfile |
383 | PerlIO * | |
8ac85365 | 384 | PerlIO_tmpfile(void) |
33dcbb9a | 385 | { |
14a5cf38 | 386 | return tmpfile(); |
33dcbb9a | 387 | } |
388 | ||
22569500 | 389 | #else /* PERLIO_IS_STDIO */ |
760ac839 LW |
390 | |
391 | #ifdef USE_SFIO | |
392 | ||
393 | #undef HAS_FSETPOS | |
394 | #undef HAS_FGETPOS | |
395 | ||
14a5cf38 JH |
396 | /* |
397 | * This section is just to make sure these functions get pulled in from | |
71200d45 | 398 | * libsfio.a |
14a5cf38 | 399 | */ |
760ac839 LW |
400 | |
401 | #undef PerlIO_tmpfile | |
402 | PerlIO * | |
c78749f2 | 403 | PerlIO_tmpfile(void) |
760ac839 | 404 | { |
14a5cf38 | 405 | return sftmp(0); |
760ac839 LW |
406 | } |
407 | ||
408 | void | |
e8632036 | 409 | PerlIO_init(pTHX) |
760ac839 | 410 | { |
96a5add6 | 411 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
412 | /* |
413 | * Force this file to be included in perl binary. Which allows this | |
414 | * file to force inclusion of other functions that may be required by | |
71200d45 | 415 | * loadable extensions e.g. for FileHandle::tmpfile |
14a5cf38 | 416 | */ |
760ac839 | 417 | |
14a5cf38 | 418 | /* |
71200d45 | 419 | * Hack sfio does its own 'autoflush' on stdout in common cases. Flush |
14a5cf38 | 420 | * results in a lot of lseek()s to regular files and lot of small |
71200d45 | 421 | * writes to pipes. |
14a5cf38 JH |
422 | */ |
423 | sfset(sfstdout, SF_SHARE, 0); | |
760ac839 LW |
424 | } |
425 | ||
b9d6bf13 | 426 | /* This is not the reverse of PerlIO_exportFILE(), PerlIO_releaseFILE() is. */ |
92bff44d | 427 | PerlIO * |
4b069b44 | 428 | PerlIO_importFILE(FILE *stdio, const char *mode) |
92bff44d | 429 | { |
de009b76 | 430 | const int fd = fileno(stdio); |
4b069b44 | 431 | if (!mode || !*mode) { |
81428673 | 432 | mode = "r+"; |
4b069b44 NIS |
433 | } |
434 | return PerlIO_fdopen(fd, mode); | |
92bff44d NIS |
435 | } |
436 | ||
437 | FILE * | |
438 | PerlIO_findFILE(PerlIO *pio) | |
439 | { | |
de009b76 AL |
440 | const int fd = PerlIO_fileno(pio); |
441 | FILE * const f = fdopen(fd, "r+"); | |
14a5cf38 JH |
442 | PerlIO_flush(pio); |
443 | if (!f && errno == EINVAL) | |
444 | f = fdopen(fd, "w"); | |
445 | if (!f && errno == EINVAL) | |
446 | f = fdopen(fd, "r"); | |
447 | return f; | |
92bff44d NIS |
448 | } |
449 | ||
450 | ||
22569500 | 451 | #else /* USE_SFIO */ |
6f9d8c32 | 452 | /*======================================================================================*/ |
14a5cf38 | 453 | /* |
71200d45 | 454 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 455 | */ |
760ac839 | 456 | |
76ced9ad NIS |
457 | #include "perliol.h" |
458 | ||
14a5cf38 JH |
459 | /* |
460 | * We _MUST_ have <unistd.h> if we are using lseek() and may have large | |
71200d45 | 461 | * files |
14a5cf38 | 462 | */ |
02f66e2f NIS |
463 | #ifdef I_UNISTD |
464 | #include <unistd.h> | |
465 | #endif | |
06da4f11 NIS |
466 | #ifdef HAS_MMAP |
467 | #include <sys/mman.h> | |
468 | #endif | |
469 | ||
6f9d8c32 | 470 | void |
14a5cf38 JH |
471 | PerlIO_debug(const char *fmt, ...) |
472 | { | |
14a5cf38 JH |
473 | va_list ap; |
474 | dSYS; | |
475 | va_start(ap, fmt); | |
582588d2 NC |
476 | if (!PL_perlio_debug_fd) { |
477 | if (!PL_tainting && PL_uid == PL_euid && PL_gid == PL_egid) { | |
478 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); | |
479 | if (s && *s) | |
480 | PL_perlio_debug_fd | |
481 | = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); | |
482 | else | |
483 | PL_perlio_debug_fd = -1; | |
484 | } else { | |
485 | /* tainting or set*id, so ignore the environment, and ensure we | |
486 | skip these tests next time through. */ | |
27da23d5 | 487 | PL_perlio_debug_fd = -1; |
582588d2 | 488 | } |
14a5cf38 | 489 | } |
27da23d5 | 490 | if (PL_perlio_debug_fd > 0) { |
14a5cf38 | 491 | dTHX; |
70ace5da | 492 | #ifdef USE_ITHREADS |
dcda55fc | 493 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
494 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
495 | char buffer[1024]; | |
1208b3dd JH |
496 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
497 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); | |
498 | PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2); | |
70ace5da | 499 | #else |
dcda55fc AL |
500 | const char *s = CopFILE(PL_curcop); |
501 | STRLEN len; | |
396482e1 | 502 | SV * const sv = newSVpvs(""); |
dcda55fc | 503 | Perl_sv_catpvf(aTHX_ sv, "%s:%" IVdf " ", s ? s : "(none)", |
14a5cf38 JH |
504 | (IV) CopLINE(PL_curcop)); |
505 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); | |
506 | ||
b83604b4 | 507 | s = SvPV_const(sv, len); |
27da23d5 | 508 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 509 | SvREFCNT_dec(sv); |
70ace5da | 510 | #endif |
14a5cf38 JH |
511 | } |
512 | va_end(ap); | |
6f9d8c32 NIS |
513 | } |
514 | ||
9e353e3b NIS |
515 | /*--------------------------------------------------------------------------------------*/ |
516 | ||
14a5cf38 | 517 | /* |
71200d45 | 518 | * Inner level routines |
14a5cf38 | 519 | */ |
9e353e3b | 520 | |
14a5cf38 | 521 | /* |
71200d45 | 522 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 523 | */ |
05d1247b | 524 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 525 | |
760ac839 | 526 | PerlIO * |
5f1a76d0 | 527 | PerlIO_allocate(pTHX) |
6f9d8c32 | 528 | { |
97aff369 | 529 | dVAR; |
14a5cf38 | 530 | /* |
71200d45 | 531 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 JH |
532 | */ |
533 | PerlIO **last; | |
534 | PerlIO *f; | |
a1ea730d | 535 | last = &PL_perlio; |
14a5cf38 JH |
536 | while ((f = *last)) { |
537 | int i; | |
538 | last = (PerlIO **) (f); | |
539 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
540 | if (!*++f) { | |
541 | return f; | |
542 | } | |
543 | } | |
544 | } | |
a02a5408 | 545 | Newxz(f,PERLIO_TABLE_SIZE,PerlIO); |
14a5cf38 JH |
546 | if (!f) { |
547 | return NULL; | |
548 | } | |
549 | *last = f; | |
550 | return f + 1; | |
05d1247b NIS |
551 | } |
552 | ||
a1ea730d NIS |
553 | #undef PerlIO_fdupopen |
554 | PerlIO * | |
ecdeb87c | 555 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 556 | { |
04892f78 | 557 | if (PerlIOValid(f)) { |
de009b76 | 558 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 559 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
560 | if (tab && tab->Dup) |
561 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
562 | else { |
563 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
564 | } | |
a1ea730d | 565 | } |
210e727c JH |
566 | else |
567 | SETERRNO(EBADF, SS_IVCHAN); | |
568 | ||
569 | return NULL; | |
a1ea730d NIS |
570 | } |
571 | ||
572 | void | |
5f1a76d0 | 573 | PerlIO_cleantable(pTHX_ PerlIO **tablep) |
05d1247b | 574 | { |
dcda55fc | 575 | PerlIO * const table = *tablep; |
14a5cf38 JH |
576 | if (table) { |
577 | int i; | |
578 | PerlIO_cleantable(aTHX_(PerlIO **) & (table[0])); | |
579 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { | |
dcda55fc | 580 | PerlIO * const f = table + i; |
14a5cf38 JH |
581 | if (*f) { |
582 | PerlIO_close(f); | |
583 | } | |
584 | } | |
3a1ee7e8 | 585 | Safefree(table); |
14a5cf38 | 586 | *tablep = NULL; |
05d1247b | 587 | } |
05d1247b NIS |
588 | } |
589 | ||
fcf2db38 NIS |
590 | |
591 | PerlIO_list_t * | |
3a1ee7e8 | 592 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 593 | { |
14a5cf38 | 594 | PerlIO_list_t *list; |
96a5add6 | 595 | PERL_UNUSED_CONTEXT; |
a02a5408 | 596 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
597 | list->refcnt = 1; |
598 | return list; | |
fcf2db38 NIS |
599 | } |
600 | ||
601 | void | |
3a1ee7e8 | 602 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 603 | { |
14a5cf38 JH |
604 | if (list) { |
605 | if (--list->refcnt == 0) { | |
606 | if (list->array) { | |
14a5cf38 JH |
607 | IV i; |
608 | for (i = 0; i < list->cur; i++) { | |
609 | if (list->array[i].arg) | |
610 | SvREFCNT_dec(list->array[i].arg); | |
611 | } | |
612 | Safefree(list->array); | |
613 | } | |
614 | Safefree(list); | |
615 | } | |
616 | } | |
fcf2db38 NIS |
617 | } |
618 | ||
619 | void | |
3a1ee7e8 | 620 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 621 | { |
97aff369 | 622 | dVAR; |
334e202e | 623 | PerlIO_pair_t *p; |
b37c2d43 AL |
624 | PERL_UNUSED_CONTEXT; |
625 | ||
14a5cf38 JH |
626 | if (list->cur >= list->len) { |
627 | list->len += 8; | |
628 | if (list->array) | |
629 | Renew(list->array, list->len, PerlIO_pair_t); | |
630 | else | |
a02a5408 | 631 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
632 | } |
633 | p = &(list->array[list->cur++]); | |
634 | p->funcs = funcs; | |
635 | if ((p->arg = arg)) { | |
f84c484e | 636 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 637 | } |
fcf2db38 NIS |
638 | } |
639 | ||
3a1ee7e8 NIS |
640 | PerlIO_list_t * |
641 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
642 | { | |
b37c2d43 | 643 | PerlIO_list_t *list = NULL; |
694c95cf JH |
644 | if (proto) { |
645 | int i; | |
646 | list = PerlIO_list_alloc(aTHX); | |
647 | for (i=0; i < proto->cur; i++) { | |
a0714e2c | 648 | SV *arg = NULL; |
694c95cf JH |
649 | if (proto->array[i].arg) |
650 | arg = PerlIO_sv_dup(aTHX_ proto->array[i].arg,param); | |
651 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); | |
652 | } | |
3a1ee7e8 NIS |
653 | } |
654 | return list; | |
655 | } | |
4a4a6116 | 656 | |
05d1247b | 657 | void |
3a1ee7e8 | 658 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 659 | { |
3aaf42a7 | 660 | #ifdef USE_ITHREADS |
3a1ee7e8 NIS |
661 | PerlIO **table = &proto->Iperlio; |
662 | PerlIO *f; | |
663 | PL_perlio = NULL; | |
664 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
665 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
666 | PerlIO_allocate(aTHX); /* root slot is never used */ | |
a25429c6 | 667 | PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto); |
3a1ee7e8 NIS |
668 | while ((f = *table)) { |
669 | int i; | |
670 | table = (PerlIO **) (f++); | |
671 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
672 | if (*f) { | |
93a8090d | 673 | (void) fp_dup(f, 0, param); |
3a1ee7e8 NIS |
674 | } |
675 | f++; | |
676 | } | |
677 | } | |
1b6737cc | 678 | #else |
a25429c6 | 679 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
680 | PERL_UNUSED_ARG(proto); |
681 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 682 | #endif |
9a6404c5 DM |
683 | } |
684 | ||
685 | void | |
13621cfb NIS |
686 | PerlIO_destruct(pTHX) |
687 | { | |
97aff369 | 688 | dVAR; |
a1ea730d | 689 | PerlIO **table = &PL_perlio; |
14a5cf38 | 690 | PerlIO *f; |
694c95cf | 691 | #ifdef USE_ITHREADS |
a25429c6 | 692 | PerlIO_debug("Destruct %p\n",(void*)aTHX); |
694c95cf | 693 | #endif |
14a5cf38 JH |
694 | while ((f = *table)) { |
695 | int i; | |
696 | table = (PerlIO **) (f++); | |
697 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
698 | PerlIO *x = f; | |
dcda55fc | 699 | const PerlIOl *l; |
14a5cf38 JH |
700 | while ((l = *x)) { |
701 | if (l->tab->kind & PERLIO_K_DESTRUCT) { | |
702 | PerlIO_debug("Destruct popping %s\n", l->tab->name); | |
703 | PerlIO_flush(x); | |
704 | PerlIO_pop(aTHX_ x); | |
705 | } | |
706 | else { | |
707 | x = PerlIONext(x); | |
708 | } | |
709 | } | |
710 | f++; | |
711 | } | |
712 | } | |
13621cfb NIS |
713 | } |
714 | ||
715 | void | |
a999f61b | 716 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 717 | { |
dcda55fc | 718 | const PerlIOl *l = *f; |
14a5cf38 | 719 | if (l) { |
fe5a182c | 720 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, l->tab->name); |
14a5cf38 JH |
721 | if (l->tab->Popped) { |
722 | /* | |
723 | * If popped returns non-zero do not free its layer structure | |
724 | * it has either done so itself, or it is shared and still in | |
71200d45 | 725 | * use |
14a5cf38 | 726 | */ |
f62ce20a | 727 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
728 | return; |
729 | } | |
b47cad08 | 730 | *f = l->next; |
3a1ee7e8 | 731 | Safefree(l); |
a8c08ecd | 732 | } |
6f9d8c32 NIS |
733 | } |
734 | ||
39f7a870 JH |
735 | /* Return as an array the stack of layers on a filehandle. Note that |
736 | * the stack is returned top-first in the array, and there are three | |
737 | * times as many array elements as there are layers in the stack: the | |
738 | * first element of a layer triplet is the name, the second one is the | |
739 | * arguments, and the third one is the flags. */ | |
740 | ||
741 | AV * | |
742 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
743 | { | |
97aff369 | 744 | dVAR; |
dcda55fc | 745 | AV * const av = newAV(); |
39f7a870 | 746 | |
dcda55fc AL |
747 | if (PerlIOValid(f)) { |
748 | PerlIOl *l = PerlIOBase(f); | |
749 | ||
750 | while (l) { | |
751 | SV * const name = l->tab && l->tab->name ? | |
752 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
753 | SV * const arg = l->tab && l->tab->Getarg ? | |
754 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
755 | av_push(av, name); | |
756 | av_push(av, arg); | |
757 | av_push(av, newSViv((IV)l->flags)); | |
758 | l = l->next; | |
759 | } | |
760 | } | |
39f7a870 | 761 | |
dcda55fc | 762 | return av; |
39f7a870 JH |
763 | } |
764 | ||
9e353e3b | 765 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 766 | /* |
71200d45 | 767 | * XS Interface for perl code |
14a5cf38 | 768 | */ |
9e353e3b | 769 | |
fcf2db38 | 770 | PerlIO_funcs * |
2edd7e44 | 771 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 772 | { |
27da23d5 | 773 | dVAR; |
14a5cf38 JH |
774 | IV i; |
775 | if ((SSize_t) len <= 0) | |
776 | len = strlen(name); | |
3a1ee7e8 | 777 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 778 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 779 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 780 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
781 | return f; |
782 | } | |
783 | } | |
3a1ee7e8 NIS |
784 | if (load && PL_subname && PL_def_layerlist |
785 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
786 | if (PL_in_load_module) { |
787 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
788 | return NULL; | |
789 | } else { | |
396482e1 | 790 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 AL |
791 | SV * const layer = newSVpvn(name, len); |
792 | CV * const cv = get_cv("PerlIO::Layer::NoWarnings", FALSE); | |
793 | ENTER; | |
d7a09b41 | 794 | SAVEINT(PL_in_load_module); |
c9bca74a | 795 | if (cv) { |
9cfa90c0 | 796 | SAVEGENERICSV(PL_warnhook); |
b37c2d43 | 797 | PL_warnhook = (SV *) (SvREFCNT_inc_simple_NN(cv)); |
c9bca74a | 798 | } |
d7a09b41 SR |
799 | PL_in_load_module++; |
800 | /* | |
801 | * The two SVs are magically freed by load_module | |
802 | */ | |
a0714e2c | 803 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
804 | PL_in_load_module--; |
805 | LEAVE; | |
806 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
807 | } | |
14a5cf38 JH |
808 | } |
809 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
810 | return NULL; | |
f3862f8b NIS |
811 | } |
812 | ||
2a1bc955 | 813 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
814 | |
815 | static int | |
816 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
817 | { | |
14a5cf38 | 818 | if (SvROK(sv)) { |
dcda55fc AL |
819 | IO * const io = GvIOn((GV *) SvRV(sv)); |
820 | PerlIO * const ifp = IoIFP(io); | |
821 | PerlIO * const ofp = IoOFP(io); | |
14a5cf38 JH |
822 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", sv, io, ifp, ofp); |
823 | } | |
824 | return 0; | |
b13b2135 NIS |
825 | } |
826 | ||
827 | static int | |
828 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
829 | { | |
14a5cf38 | 830 | if (SvROK(sv)) { |
dcda55fc AL |
831 | IO * const io = GvIOn((GV *) SvRV(sv)); |
832 | PerlIO * const ifp = IoIFP(io); | |
833 | PerlIO * const ofp = IoOFP(io); | |
14a5cf38 JH |
834 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", sv, io, ifp, ofp); |
835 | } | |
836 | return 0; | |
b13b2135 NIS |
837 | } |
838 | ||
839 | static int | |
840 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
841 | { | |
14a5cf38 JH |
842 | Perl_warn(aTHX_ "clear %" SVf, sv); |
843 | return 0; | |
b13b2135 NIS |
844 | } |
845 | ||
846 | static int | |
847 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
848 | { | |
14a5cf38 JH |
849 | Perl_warn(aTHX_ "free %" SVf, sv); |
850 | return 0; | |
b13b2135 NIS |
851 | } |
852 | ||
853 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
854 | perlio_mg_get, |
855 | perlio_mg_set, | |
22569500 | 856 | NULL, /* len */ |
14a5cf38 JH |
857 | perlio_mg_clear, |
858 | perlio_mg_free | |
b13b2135 NIS |
859 | }; |
860 | ||
861 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
862 | { | |
14a5cf38 | 863 | dXSARGS; |
dcda55fc AL |
864 | SV * const sv = SvRV(ST(1)); |
865 | AV * const av = newAV(); | |
14a5cf38 JH |
866 | MAGIC *mg; |
867 | int count = 0; | |
868 | int i; | |
869 | sv_magic(sv, (SV *) av, PERL_MAGIC_ext, NULL, 0); | |
870 | SvRMAGICAL_off(sv); | |
871 | mg = mg_find(sv, PERL_MAGIC_ext); | |
872 | mg->mg_virtual = &perlio_vtab; | |
873 | mg_magical(sv); | |
874 | Perl_warn(aTHX_ "attrib %" SVf, sv); | |
875 | for (i = 2; i < items; i++) { | |
876 | STRLEN len; | |
dcda55fc AL |
877 | const char * const name = SvPV_const(ST(i), len); |
878 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 879 | if (layer) { |
b37c2d43 | 880 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
881 | } |
882 | else { | |
883 | ST(count) = ST(i); | |
884 | count++; | |
885 | } | |
886 | } | |
887 | SvREFCNT_dec(av); | |
888 | XSRETURN(count); | |
889 | } | |
890 | ||
22569500 | 891 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 892 | |
e3f3bf95 NIS |
893 | SV * |
894 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 895 | { |
89529cee | 896 | HV * const stash = gv_stashpvs("PerlIO::Layer", TRUE); |
46c461b5 | 897 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 898 | return sv; |
e3f3bf95 NIS |
899 | } |
900 | ||
5ca1d77f | 901 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 902 | { |
37725cdc | 903 | /* This is used as a %SIG{__WARN__} handler to supress warnings |
c9bca74a NIS |
904 | during loading of layers. |
905 | */ | |
97aff369 | 906 | dVAR; |
c9bca74a NIS |
907 | dXSARGS; |
908 | if (items) | |
e62f0680 | 909 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
910 | XSRETURN(0); |
911 | } | |
912 | ||
5ca1d77f | 913 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 914 | { |
97aff369 | 915 | dVAR; |
14a5cf38 JH |
916 | dXSARGS; |
917 | if (items < 2) | |
918 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
919 | else { | |
de009b76 | 920 | STRLEN len; |
46c461b5 | 921 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 922 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 923 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
924 | ST(0) = |
925 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
926 | &PL_sv_undef; | |
927 | XSRETURN(1); | |
928 | } | |
0c4f7ff0 NIS |
929 | } |
930 | ||
e3f3bf95 NIS |
931 | void |
932 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
933 | { | |
97aff369 | 934 | dVAR; |
3a1ee7e8 NIS |
935 | if (!PL_known_layers) |
936 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 937 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 938 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
939 | } |
940 | ||
1141d9f8 | 941 | int |
fcf2db38 | 942 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 943 | { |
97aff369 | 944 | dVAR; |
14a5cf38 JH |
945 | if (names) { |
946 | const char *s = names; | |
947 | while (*s) { | |
948 | while (isSPACE(*s) || *s == ':') | |
949 | s++; | |
950 | if (*s) { | |
951 | STRLEN llen = 0; | |
952 | const char *e = s; | |
bd61b366 | 953 | const char *as = NULL; |
14a5cf38 JH |
954 | STRLEN alen = 0; |
955 | if (!isIDFIRST(*s)) { | |
956 | /* | |
957 | * Message is consistent with how attribute lists are | |
958 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 959 | * seen as an invalid separator character. |
14a5cf38 | 960 | */ |
de009b76 | 961 | const char q = ((*s == '\'') ? '"' : '\''); |
99ef548b | 962 | if (ckWARN(WARN_LAYER)) |
22569500 | 963 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
b4581f09 | 964 | "Invalid separator character %c%c%c in PerlIO layer specification %s", |
1e616cf5 | 965 | q, *s, q, s); |
93189314 | 966 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
967 | return -1; |
968 | } | |
969 | do { | |
970 | e++; | |
971 | } while (isALNUM(*e)); | |
972 | llen = e - s; | |
973 | if (*e == '(') { | |
974 | int nesting = 1; | |
975 | as = ++e; | |
976 | while (nesting) { | |
977 | switch (*e++) { | |
978 | case ')': | |
979 | if (--nesting == 0) | |
980 | alen = (e - 1) - as; | |
981 | break; | |
982 | case '(': | |
983 | ++nesting; | |
984 | break; | |
985 | case '\\': | |
986 | /* | |
987 | * It's a nul terminated string, not allowed | |
988 | * to \ the terminating null. Anything other | |
71200d45 | 989 | * character is passed over. |
14a5cf38 JH |
990 | */ |
991 | if (*e++) { | |
992 | break; | |
993 | } | |
994 | /* | |
71200d45 | 995 | * Drop through |
14a5cf38 JH |
996 | */ |
997 | case '\0': | |
998 | e--; | |
22569500 NIS |
999 | if (ckWARN(WARN_LAYER)) |
1000 | Perl_warner(aTHX_ packWARN(WARN_LAYER), | |
b4581f09 | 1001 | "Argument list not closed for PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1002 | (int) (e - s), s); |
1003 | return -1; | |
1004 | default: | |
1005 | /* | |
71200d45 | 1006 | * boring. |
14a5cf38 JH |
1007 | */ |
1008 | break; | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | if (e > s) { | |
46c461b5 | 1013 | PerlIO_funcs * const layer = |
14a5cf38 JH |
1014 | PerlIO_find_layer(aTHX_ s, llen, 1); |
1015 | if (layer) { | |
3a1ee7e8 | 1016 | PerlIO_list_push(aTHX_ av, layer, |
14a5cf38 JH |
1017 | (as) ? newSVpvn(as, |
1018 | alen) : | |
1019 | &PL_sv_undef); | |
1020 | } | |
1021 | else { | |
041457d9 | 1022 | if (ckWARN(WARN_LAYER)) |
b4581f09 | 1023 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1024 | (int) llen, s); |
1025 | return -1; | |
1026 | } | |
1027 | } | |
1028 | s = e; | |
1029 | } | |
1030 | } | |
1031 | } | |
1032 | return 0; | |
1141d9f8 NIS |
1033 | } |
1034 | ||
dfebf958 | 1035 | void |
fcf2db38 | 1036 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1037 | { |
97aff369 | 1038 | dVAR; |
27da23d5 | 1039 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1040 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1041 | tab = &PerlIO_crlf; |
846be114 | 1042 | #else |
6ce75a77 | 1043 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1044 | tab = &PerlIO_stdio; |
846be114 | 1045 | #endif |
14a5cf38 | 1046 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1047 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1048 | &PL_sv_undef); |
dfebf958 NIS |
1049 | } |
1050 | ||
e3f3bf95 | 1051 | SV * |
14a5cf38 | 1052 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1053 | { |
14a5cf38 | 1054 | return av->array[n].arg; |
e3f3bf95 NIS |
1055 | } |
1056 | ||
f3862f8b | 1057 | PerlIO_funcs * |
14a5cf38 | 1058 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1059 | { |
14a5cf38 JH |
1060 | if (n >= 0 && n < av->cur) { |
1061 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1062 | av->array[n].funcs->name); | |
1063 | return av->array[n].funcs; | |
1064 | } | |
1065 | if (!def) | |
1066 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1067 | return def; | |
e3f3bf95 NIS |
1068 | } |
1069 | ||
4ec2216f NIS |
1070 | IV |
1071 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1072 | { | |
8772537c AL |
1073 | PERL_UNUSED_ARG(mode); |
1074 | PERL_UNUSED_ARG(arg); | |
1075 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1076 | if (PerlIOValid(f)) { |
1077 | PerlIO_flush(f); | |
1078 | PerlIO_pop(aTHX_ f); | |
1079 | return 0; | |
1080 | } | |
1081 | return -1; | |
1082 | } | |
1083 | ||
27da23d5 | 1084 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1085 | sizeof(PerlIO_funcs), |
1086 | "pop", | |
1087 | 0, | |
1088 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1089 | PerlIOPop_pushed, | |
1090 | NULL, | |
1091 | NULL, | |
1092 | NULL, | |
1093 | NULL, | |
1094 | NULL, | |
1095 | NULL, | |
1096 | NULL, | |
1097 | NULL, | |
1098 | NULL, | |
1099 | NULL, | |
de009b76 AL |
1100 | NULL, |
1101 | NULL, | |
4ec2216f NIS |
1102 | NULL, /* flush */ |
1103 | NULL, /* fill */ | |
1104 | NULL, | |
1105 | NULL, | |
1106 | NULL, | |
1107 | NULL, | |
1108 | NULL, /* get_base */ | |
1109 | NULL, /* get_bufsiz */ | |
1110 | NULL, /* get_ptr */ | |
1111 | NULL, /* get_cnt */ | |
1112 | NULL, /* set_ptrcnt */ | |
1113 | }; | |
1114 | ||
fcf2db38 | 1115 | PerlIO_list_t * |
e3f3bf95 NIS |
1116 | PerlIO_default_layers(pTHX) |
1117 | { | |
97aff369 | 1118 | dVAR; |
3a1ee7e8 | 1119 | if (!PL_def_layerlist) { |
bd61b366 | 1120 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1121 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1122 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1123 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1124 | #if defined(WIN32) |
27da23d5 | 1125 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1126 | #if 0 |
14a5cf38 | 1127 | osLayer = &PerlIO_win32; |
0c4128ad | 1128 | #endif |
2f8118af | 1129 | #endif |
27da23d5 JH |
1130 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1131 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1132 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1133 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1134 | #ifdef HAS_MMAP |
27da23d5 | 1135 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1136 | #endif |
27da23d5 JH |
1137 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1138 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1139 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1140 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1141 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1142 | &PL_sv_undef); | |
1143 | if (s) { | |
3a1ee7e8 | 1144 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1145 | } |
1146 | else { | |
3a1ee7e8 | 1147 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1148 | } |
1141d9f8 | 1149 | } |
3a1ee7e8 NIS |
1150 | if (PL_def_layerlist->cur < 2) { |
1151 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1152 | } |
3a1ee7e8 | 1153 | return PL_def_layerlist; |
e3f3bf95 NIS |
1154 | } |
1155 | ||
0c4f7ff0 NIS |
1156 | void |
1157 | Perl_boot_core_PerlIO(pTHX) | |
1158 | { | |
1159 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1160 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1161 | __FILE__); | |
0c4f7ff0 | 1162 | #endif |
14a5cf38 | 1163 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1164 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1165 | } |
e3f3bf95 NIS |
1166 | |
1167 | PerlIO_funcs * | |
1168 | PerlIO_default_layer(pTHX_ I32 n) | |
1169 | { | |
97aff369 | 1170 | dVAR; |
46c461b5 | 1171 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1172 | if (n < 0) |
1173 | n += av->cur; | |
27da23d5 | 1174 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1175 | } |
1176 | ||
a999f61b NIS |
1177 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1178 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1179 | |
1180 | void | |
1141d9f8 | 1181 | PerlIO_stdstreams(pTHX) |
60382766 | 1182 | { |
97aff369 | 1183 | dVAR; |
a1ea730d | 1184 | if (!PL_perlio) { |
14a5cf38 JH |
1185 | PerlIO_allocate(aTHX); |
1186 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); | |
1187 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1188 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1189 | } | |
60382766 NIS |
1190 | } |
1191 | ||
1192 | PerlIO * | |
27da23d5 | 1193 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1194 | { |
2dc2558e NIS |
1195 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
1196 | mismatch: | |
1197 | Perl_croak(aTHX_ "Layer does not match this perl"); | |
1198 | } | |
1199 | if (tab->size) { | |
b464bac0 | 1200 | PerlIOl *l; |
2dc2558e NIS |
1201 | if (tab->size < sizeof(PerlIOl)) { |
1202 | goto mismatch; | |
1203 | } | |
1204 | /* Real layer with a data area */ | |
002e75cf JH |
1205 | if (f) { |
1206 | char *temp; | |
1207 | Newxz(temp, tab->size, char); | |
1208 | l = (PerlIOl*)temp; | |
1209 | if (l) { | |
1210 | l->next = *f; | |
1211 | l->tab = (PerlIO_funcs*) tab; | |
1212 | *f = l; | |
1213 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1214 | (void*)f, tab->name, | |
1215 | (mode) ? mode : "(Null)", (void*)arg); | |
1216 | if (*l->tab->Pushed && | |
1217 | (*l->tab->Pushed) | |
1218 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1219 | PerlIO_pop(aTHX_ f); | |
1220 | return NULL; | |
1221 | } | |
2dc2558e | 1222 | } |
002e75cf JH |
1223 | else |
1224 | return NULL; | |
2dc2558e NIS |
1225 | } |
1226 | } | |
1227 | else if (f) { | |
1228 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1229 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1230 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1231 | if (tab->Pushed && |
27da23d5 | 1232 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1233 | return NULL; |
14a5cf38 JH |
1234 | } |
1235 | } | |
1236 | return f; | |
60382766 NIS |
1237 | } |
1238 | ||
dfebf958 | 1239 | IV |
86e05cf2 NIS |
1240 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1241 | { | |
1242 | if (PerlIOValid(f)) { | |
1243 | /* Is layer suitable for raw stream ? */ | |
1244 | if (PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1245 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1246 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1247 | } | |
1248 | else { | |
1249 | /* Not suitable - pop it */ | |
1250 | PerlIO_pop(aTHX_ f); | |
1251 | } | |
1252 | return 0; | |
1253 | } | |
1254 | return -1; | |
1255 | } | |
1256 | ||
1257 | IV | |
2dc2558e | 1258 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1259 | { |
8772537c AL |
1260 | PERL_UNUSED_ARG(mode); |
1261 | PERL_UNUSED_ARG(arg); | |
1262 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1263 | |
04892f78 | 1264 | if (PerlIOValid(f)) { |
86e05cf2 | 1265 | PerlIO *t; |
de009b76 | 1266 | const PerlIOl *l; |
14a5cf38 | 1267 | PerlIO_flush(f); |
86e05cf2 NIS |
1268 | /* |
1269 | * Strip all layers that are not suitable for a raw stream | |
1270 | */ | |
1271 | t = f; | |
1272 | while (t && (l = *t)) { | |
1273 | if (l->tab->Binmode) { | |
1274 | /* Has a handler - normal case */ | |
1275 | if ((*l->tab->Binmode)(aTHX_ f) == 0) { | |
1276 | if (*t == l) { | |
1277 | /* Layer still there - move down a layer */ | |
1278 | t = PerlIONext(t); | |
1279 | } | |
1280 | } | |
1281 | else { | |
1282 | return -1; | |
1283 | } | |
14a5cf38 JH |
1284 | } |
1285 | else { | |
86e05cf2 NIS |
1286 | /* No handler - pop it */ |
1287 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1288 | } |
1289 | } | |
86e05cf2 NIS |
1290 | if (PerlIOValid(f)) { |
1291 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); | |
1292 | return 0; | |
1293 | } | |
14a5cf38 JH |
1294 | } |
1295 | return -1; | |
dfebf958 NIS |
1296 | } |
1297 | ||
ac27b0f5 | 1298 | int |
14a5cf38 | 1299 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1300 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1301 | { |
14a5cf38 JH |
1302 | int code = 0; |
1303 | while (n < max) { | |
8772537c | 1304 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1305 | if (tab) { |
1306 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1307 | code = -1; | |
1308 | break; | |
1309 | } | |
1310 | } | |
1311 | n++; | |
1312 | } | |
1313 | return code; | |
e3f3bf95 NIS |
1314 | } |
1315 | ||
1316 | int | |
ac27b0f5 NIS |
1317 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1318 | { | |
14a5cf38 | 1319 | int code = 0; |
53f1b6d2 | 1320 | if (f && names) { |
8772537c | 1321 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1322 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1323 | if (code == 0) { | |
d9dac8cd | 1324 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1325 | } |
3a1ee7e8 | 1326 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1327 | } |
14a5cf38 | 1328 | return code; |
ac27b0f5 NIS |
1329 | } |
1330 | ||
f3862f8b | 1331 | |
60382766 | 1332 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1333 | /* |
71200d45 | 1334 | * Given the abstraction above the public API functions |
14a5cf38 | 1335 | */ |
60382766 NIS |
1336 | |
1337 | int | |
f5b9d040 | 1338 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1339 | { |
68b5363f PD |
1340 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
1341 | (PerlIOBase(f)) ? PerlIOBase(f)->tab->name : "(Null)", | |
1342 | iotype, mode, (names) ? names : "(Null)"); | |
1343 | ||
03c0554d NIS |
1344 | if (names) { |
1345 | /* Do not flush etc. if (e.g.) switching encodings. | |
1346 | if a pushed layer knows it needs to flush lower layers | |
1347 | (for example :unix which is never going to call them) | |
1348 | it can do the flush when it is pushed. | |
1349 | */ | |
1350 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1351 | } | |
1352 | else { | |
86e05cf2 | 1353 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1354 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1355 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1356 | O_BINARY so we can look for it in mode. | |
1357 | */ | |
1358 | if (!(mode & O_BINARY)) { | |
1359 | /* Text mode */ | |
86e05cf2 NIS |
1360 | /* FIXME?: Looking down the layer stack seems wrong, |
1361 | but is a way of reaching past (say) an encoding layer | |
1362 | to flip CRLF-ness of the layer(s) below | |
1363 | */ | |
03c0554d NIS |
1364 | while (*f) { |
1365 | /* Perhaps we should turn on bottom-most aware layer | |
1366 | e.g. Ilya's idea that UNIX TTY could serve | |
1367 | */ | |
1368 | if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { | |
1369 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1370 | /* Not in text mode - flush any pending stuff and flip it */ | |
1371 | PerlIO_flush(f); | |
1372 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1373 | } | |
1374 | /* Only need to turn it on in one layer so we are done */ | |
1375 | return TRUE; | |
ed53a2bb | 1376 | } |
03c0554d | 1377 | f = PerlIONext(f); |
14a5cf38 | 1378 | } |
03c0554d NIS |
1379 | /* Not finding a CRLF aware layer presumably means we are binary |
1380 | which is not what was requested - so we failed | |
1381 | We _could_ push :crlf layer but so could caller | |
1382 | */ | |
1383 | return FALSE; | |
14a5cf38 | 1384 | } |
6ce75a77 | 1385 | #endif |
86e05cf2 NIS |
1386 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1387 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1388 | */ |
a0714e2c | 1389 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1390 | } |
f5b9d040 NIS |
1391 | } |
1392 | ||
f5b9d040 | 1393 | int |
e87a358a | 1394 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1395 | { |
37725cdc | 1396 | if (PerlIOValid(f)) { |
46c461b5 | 1397 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1398 | if (tab && tab->Close) |
1399 | return (*tab->Close)(aTHX_ f); | |
1400 | else | |
1401 | return PerlIOBase_close(aTHX_ f); | |
1402 | } | |
14a5cf38 | 1403 | else { |
93189314 | 1404 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1405 | return -1; |
1406 | } | |
76ced9ad NIS |
1407 | } |
1408 | ||
b931b1d9 | 1409 | int |
e87a358a | 1410 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1411 | { |
de009b76 | 1412 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1413 | while (PerlIOValid(f)) { |
1414 | PerlIO_pop(aTHX_ f); | |
f6c77cf1 | 1415 | } |
14a5cf38 | 1416 | return code; |
b931b1d9 NIS |
1417 | } |
1418 | ||
b931b1d9 | 1419 | int |
e87a358a | 1420 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1421 | { |
97aff369 | 1422 | dVAR; |
b32dd47e | 1423 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1424 | } |
1425 | ||
1141d9f8 | 1426 | |
fcf2db38 | 1427 | static PerlIO_funcs * |
2edd7e44 NIS |
1428 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1429 | { | |
97aff369 | 1430 | dVAR; |
14a5cf38 | 1431 | /* |
71200d45 | 1432 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1433 | */ |
75208dda RGS |
1434 | if (SvTYPE(sv) < SVt_PVAV) { |
1435 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); | |
1436 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1437 | * but could happen anyway in smaller installs or with PAR */ | |
1438 | if (!f && ckWARN(WARN_LAYER)) | |
1439 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); | |
1440 | return f; | |
1441 | } | |
14a5cf38 JH |
1442 | |
1443 | /* | |
71200d45 | 1444 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1445 | */ |
1446 | switch (SvTYPE(sv)) { | |
1447 | case SVt_PVAV: | |
6a245ed1 | 1448 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1449 | case SVt_PVHV: |
6a245ed1 | 1450 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1451 | case SVt_PVCV: |
6a245ed1 | 1452 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1453 | case SVt_PVGV: |
6a245ed1 | 1454 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1455 | default: |
1456 | return NULL; | |
14a5cf38 | 1457 | } |
2edd7e44 NIS |
1458 | } |
1459 | ||
fcf2db38 | 1460 | PerlIO_list_t * |
14a5cf38 JH |
1461 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1462 | const char *mode, int narg, SV **args) | |
1463 | { | |
97aff369 | 1464 | dVAR; |
14a5cf38 JH |
1465 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1466 | int incdef = 1; | |
a1ea730d | 1467 | if (!PL_perlio) |
14a5cf38 JH |
1468 | PerlIO_stdstreams(aTHX); |
1469 | if (narg) { | |
dcda55fc | 1470 | SV * const arg = *args; |
14a5cf38 | 1471 | /* |
71200d45 NIS |
1472 | * If it is a reference but not an object see if we have a handler |
1473 | * for it | |
14a5cf38 JH |
1474 | */ |
1475 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1476 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1477 | if (handler) { |
3a1ee7e8 NIS |
1478 | def = PerlIO_list_alloc(aTHX); |
1479 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1480 | incdef = 0; |
1481 | } | |
1482 | /* | |
e934609f | 1483 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1484 | * something sensible else we will just stringfy and open |
71200d45 | 1485 | * resulting string. |
14a5cf38 JH |
1486 | */ |
1487 | } | |
1488 | } | |
9fe371da | 1489 | if (!layers || !*layers) |
11bcd5da | 1490 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1491 | if (layers && *layers) { |
1492 | PerlIO_list_t *av; | |
1493 | if (incdef) { | |
de009b76 | 1494 | IV i; |
3a1ee7e8 | 1495 | av = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1496 | for (i = 0; i < def->cur; i++) { |
3a1ee7e8 | 1497 | PerlIO_list_push(aTHX_ av, def->array[i].funcs, |
14a5cf38 JH |
1498 | def->array[i].arg); |
1499 | } | |
1500 | } | |
1501 | else { | |
1502 | av = def; | |
1503 | } | |
0cff2cf3 NIS |
1504 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1505 | return av; | |
1506 | } | |
1507 | else { | |
1508 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1509 | return NULL; |
0cff2cf3 | 1510 | } |
14a5cf38 JH |
1511 | } |
1512 | else { | |
1513 | if (incdef) | |
1514 | def->refcnt++; | |
1515 | return def; | |
1516 | } | |
ee518936 NIS |
1517 | } |
1518 | ||
1519 | PerlIO * | |
14a5cf38 JH |
1520 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1521 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1522 | { | |
97aff369 | 1523 | dVAR; |
14a5cf38 JH |
1524 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1525 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1526 | if (!layers || !*layers) |
11bcd5da | 1527 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1528 | if (layers && *layers) |
1529 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1530 | } | |
1531 | } | |
1532 | else { | |
de009b76 | 1533 | PerlIO_list_t *layera; |
14a5cf38 JH |
1534 | IV n; |
1535 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1536 | if (PerlIOValid(f)) { |
14a5cf38 | 1537 | /* |
71200d45 NIS |
1538 | * This is "reopen" - it is not tested as perl does not use it |
1539 | * yet | |
14a5cf38 JH |
1540 | */ |
1541 | PerlIOl *l = *f; | |
3a1ee7e8 | 1542 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1543 | while (l) { |
46c461b5 | 1544 | SV * const arg = (l->tab->Getarg) |
04892f78 NIS |
1545 | ? (*l->tab->Getarg) (aTHX_ &l, NULL, 0) |
1546 | : &PL_sv_undef; | |
3a1ee7e8 | 1547 | PerlIO_list_push(aTHX_ layera, l->tab, arg); |
14a5cf38 JH |
1548 | l = *PerlIONext(&l); |
1549 | } | |
1550 | } | |
1551 | else { | |
1552 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1553 | if (!layera) { |
1554 | return NULL; | |
1555 | } | |
14a5cf38 JH |
1556 | } |
1557 | /* | |
71200d45 | 1558 | * Start at "top" of layer stack |
14a5cf38 JH |
1559 | */ |
1560 | n = layera->cur - 1; | |
1561 | while (n >= 0) { | |
46c461b5 | 1562 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1563 | if (t && t->Open) { |
1564 | tab = t; | |
1565 | break; | |
1566 | } | |
1567 | n--; | |
1568 | } | |
1569 | if (tab) { | |
1570 | /* | |
71200d45 | 1571 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1572 | */ |
7cf31beb | 1573 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1574 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1575 | } |
14a5cf38 | 1576 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1577 | tab->name, layers ? layers : "(Null)", mode, fd, |
1578 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1579 | if (tab->Open) |
1580 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1581 | f, narg, args); | |
1582 | else { | |
1583 | SETERRNO(EINVAL, LIB_INVARG); | |
1584 | f = NULL; | |
1585 | } | |
14a5cf38 JH |
1586 | if (f) { |
1587 | if (n + 1 < layera->cur) { | |
1588 | /* | |
1589 | * More layers above the one that we used to open - | |
71200d45 | 1590 | * apply them now |
14a5cf38 | 1591 | */ |
d9dac8cd NIS |
1592 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1593 | /* If pushing layers fails close the file */ | |
1594 | PerlIO_close(f); | |
14a5cf38 JH |
1595 | f = NULL; |
1596 | } | |
1597 | } | |
1598 | } | |
1599 | } | |
3a1ee7e8 | 1600 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1601 | } |
1602 | return f; | |
ee518936 | 1603 | } |
b931b1d9 NIS |
1604 | |
1605 | ||
9e353e3b | 1606 | SSize_t |
e87a358a | 1607 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1608 | { |
b32dd47e | 1609 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1610 | } |
1611 | ||
313ca112 | 1612 | SSize_t |
e87a358a | 1613 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1614 | { |
b32dd47e | 1615 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1616 | } |
1617 | ||
9e353e3b | 1618 | SSize_t |
e87a358a | 1619 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1620 | { |
b32dd47e | 1621 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1622 | } |
1623 | ||
6f9d8c32 | 1624 | int |
e87a358a | 1625 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1626 | { |
b32dd47e | 1627 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1628 | } |
1629 | ||
9e353e3b | 1630 | Off_t |
e87a358a | 1631 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1632 | { |
b32dd47e | 1633 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1634 | } |
1635 | ||
6f9d8c32 | 1636 | int |
e87a358a | 1637 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1638 | { |
97aff369 | 1639 | dVAR; |
14a5cf38 JH |
1640 | if (f) { |
1641 | if (*f) { | |
de009b76 | 1642 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1643 | |
1644 | if (tab && tab->Flush) | |
f62ce20a | 1645 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1646 | else |
1647 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1648 | } |
1649 | else { | |
fe5a182c | 1650 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1651 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1652 | return -1; |
1653 | } | |
1654 | } | |
1655 | else { | |
1656 | /* | |
1657 | * Is it good API design to do flush-all on NULL, a potentially | |
1658 | * errorneous input? Maybe some magical value (PerlIO* | |
1659 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1660 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1661 | * decisions? --jhi |
14a5cf38 | 1662 | */ |
a1ea730d | 1663 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1664 | int code = 0; |
1665 | while ((f = *table)) { | |
1666 | int i; | |
1667 | table = (PerlIO **) (f++); | |
1668 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1669 | if (*f && PerlIO_flush(f) != 0) | |
1670 | code = -1; | |
1671 | f++; | |
1672 | } | |
1673 | } | |
1674 | return code; | |
1675 | } | |
760ac839 LW |
1676 | } |
1677 | ||
a9c883f6 | 1678 | void |
f62ce20a | 1679 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1680 | { |
97aff369 | 1681 | dVAR; |
a1ea730d | 1682 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1683 | PerlIO *f; |
1684 | while ((f = *table)) { | |
1685 | int i; | |
1686 | table = (PerlIO **) (f++); | |
1687 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1688 | if (*f | |
1689 | && (PerlIOBase(f)-> | |
1690 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1691 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1692 | PerlIO_flush(f); | |
1693 | f++; | |
1694 | } | |
a9c883f6 | 1695 | } |
a9c883f6 NIS |
1696 | } |
1697 | ||
06da4f11 | 1698 | int |
e87a358a | 1699 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1700 | { |
b32dd47e | 1701 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1702 | } |
1703 | ||
f3862f8b NIS |
1704 | int |
1705 | PerlIO_isutf8(PerlIO *f) | |
1706 | { | |
1b7a0411 JH |
1707 | if (PerlIOValid(f)) |
1708 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1709 | else | |
1710 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1711 | |
1b7a0411 | 1712 | return -1; |
f3862f8b NIS |
1713 | } |
1714 | ||
6f9d8c32 | 1715 | int |
e87a358a | 1716 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1717 | { |
b32dd47e | 1718 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1719 | } |
1720 | ||
9e353e3b | 1721 | int |
e87a358a | 1722 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1723 | { |
b32dd47e | 1724 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1725 | } |
1726 | ||
9e353e3b | 1727 | void |
e87a358a | 1728 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1729 | { |
b32dd47e | 1730 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1731 | } |
1732 | ||
9e353e3b | 1733 | void |
e87a358a | 1734 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1735 | { |
b32dd47e | 1736 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1737 | } |
1738 | ||
9e353e3b NIS |
1739 | int |
1740 | PerlIO_has_base(PerlIO *f) | |
1741 | { | |
1b7a0411 | 1742 | if (PerlIOValid(f)) { |
46c461b5 | 1743 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1744 | |
1745 | if (tab) | |
1746 | return (tab->Get_base != NULL); | |
1747 | SETERRNO(EINVAL, LIB_INVARG); | |
1748 | } | |
1749 | else | |
1750 | SETERRNO(EBADF, SS_IVCHAN); | |
1751 | ||
1752 | return 0; | |
760ac839 LW |
1753 | } |
1754 | ||
9e353e3b NIS |
1755 | int |
1756 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1757 | { |
04892f78 | 1758 | if (PerlIOValid(f) && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) { |
46c461b5 | 1759 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1760 | |
1761 | if (tab) | |
1762 | return (tab->Set_ptrcnt != NULL); | |
1763 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1764 | } |
1b7a0411 JH |
1765 | else |
1766 | SETERRNO(EBADF, SS_IVCHAN); | |
1767 | ||
14a5cf38 | 1768 | return 0; |
9e353e3b NIS |
1769 | } |
1770 | ||
9e353e3b NIS |
1771 | int |
1772 | PerlIO_has_cntptr(PerlIO *f) | |
1773 | { | |
04892f78 | 1774 | if (PerlIOValid(f)) { |
46c461b5 | 1775 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1776 | |
1777 | if (tab) | |
1778 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1779 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1780 | } |
1b7a0411 JH |
1781 | else |
1782 | SETERRNO(EBADF, SS_IVCHAN); | |
1783 | ||
14a5cf38 | 1784 | return 0; |
9e353e3b NIS |
1785 | } |
1786 | ||
9e353e3b NIS |
1787 | int |
1788 | PerlIO_canset_cnt(PerlIO *f) | |
1789 | { | |
04892f78 | 1790 | if (PerlIOValid(f)) { |
46c461b5 | 1791 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1792 | |
1793 | if (tab) | |
1794 | return (tab->Set_ptrcnt != NULL); | |
1795 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1796 | } |
1b7a0411 JH |
1797 | else |
1798 | SETERRNO(EBADF, SS_IVCHAN); | |
1799 | ||
14a5cf38 | 1800 | return 0; |
760ac839 LW |
1801 | } |
1802 | ||
888911fc | 1803 | STDCHAR * |
e87a358a | 1804 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1805 | { |
b32dd47e | 1806 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1807 | } |
1808 | ||
9e353e3b | 1809 | int |
e87a358a | 1810 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1811 | { |
b32dd47e | 1812 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1813 | } |
1814 | ||
9e353e3b | 1815 | STDCHAR * |
e87a358a | 1816 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1817 | { |
b32dd47e | 1818 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1819 | } |
1820 | ||
05d1247b | 1821 | int |
e87a358a | 1822 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1823 | { |
b32dd47e | 1824 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1825 | } |
1826 | ||
9e353e3b | 1827 | void |
e87a358a | 1828 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1829 | { |
b32dd47e | 1830 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1831 | } |
1832 | ||
9e353e3b | 1833 | void |
e87a358a | 1834 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1835 | { |
b32dd47e | 1836 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1837 | } |
1838 | ||
4ec2216f | 1839 | |
9e353e3b | 1840 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1841 | /* |
71200d45 | 1842 | * utf8 and raw dummy layers |
14a5cf38 | 1843 | */ |
dfebf958 | 1844 | |
26fb694e | 1845 | IV |
2dc2558e | 1846 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1847 | { |
96a5add6 | 1848 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1849 | PERL_UNUSED_ARG(mode); |
1850 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1851 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1852 | if (tab->kind & PERLIO_K_UTF8) |
1853 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1854 | else | |
1855 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1856 | return 0; | |
1857 | } | |
1858 | return -1; | |
26fb694e NIS |
1859 | } |
1860 | ||
27da23d5 | 1861 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1862 | sizeof(PerlIO_funcs), |
14a5cf38 | 1863 | "utf8", |
2dc2558e | 1864 | 0, |
6874a2de | 1865 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1866 | PerlIOUtf8_pushed, |
1867 | NULL, | |
1868 | NULL, | |
1869 | NULL, | |
1870 | NULL, | |
1871 | NULL, | |
1872 | NULL, | |
1873 | NULL, | |
1874 | NULL, | |
1875 | NULL, | |
1876 | NULL, | |
de009b76 AL |
1877 | NULL, |
1878 | NULL, | |
22569500 NIS |
1879 | NULL, /* flush */ |
1880 | NULL, /* fill */ | |
14a5cf38 JH |
1881 | NULL, |
1882 | NULL, | |
1883 | NULL, | |
1884 | NULL, | |
22569500 NIS |
1885 | NULL, /* get_base */ |
1886 | NULL, /* get_bufsiz */ | |
1887 | NULL, /* get_ptr */ | |
1888 | NULL, /* get_cnt */ | |
1889 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1890 | }; |
1891 | ||
27da23d5 | 1892 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1893 | sizeof(PerlIO_funcs), |
14a5cf38 | 1894 | "bytes", |
2dc2558e | 1895 | 0, |
14a5cf38 JH |
1896 | PERLIO_K_DUMMY, |
1897 | PerlIOUtf8_pushed, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
1901 | NULL, | |
1902 | NULL, | |
1903 | NULL, | |
1904 | NULL, | |
1905 | NULL, | |
1906 | NULL, | |
1907 | NULL, | |
de009b76 AL |
1908 | NULL, |
1909 | NULL, | |
22569500 NIS |
1910 | NULL, /* flush */ |
1911 | NULL, /* fill */ | |
14a5cf38 JH |
1912 | NULL, |
1913 | NULL, | |
1914 | NULL, | |
1915 | NULL, | |
22569500 NIS |
1916 | NULL, /* get_base */ |
1917 | NULL, /* get_bufsiz */ | |
1918 | NULL, /* get_ptr */ | |
1919 | NULL, /* get_cnt */ | |
1920 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1921 | }; |
1922 | ||
1923 | PerlIO * | |
14a5cf38 JH |
1924 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1925 | IV n, const char *mode, int fd, int imode, int perm, | |
1926 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1927 | { |
8772537c AL |
1928 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1929 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1930 | if (tab && tab->Open) |
1931 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1932 | old, narg, args); | |
1933 | SETERRNO(EINVAL, LIB_INVARG); | |
1934 | return NULL; | |
dfebf958 NIS |
1935 | } |
1936 | ||
27da23d5 | 1937 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1938 | sizeof(PerlIO_funcs), |
14a5cf38 | 1939 | "raw", |
2dc2558e | 1940 | 0, |
14a5cf38 JH |
1941 | PERLIO_K_DUMMY, |
1942 | PerlIORaw_pushed, | |
1943 | PerlIOBase_popped, | |
1944 | PerlIORaw_open, | |
1945 | NULL, | |
1946 | NULL, | |
1947 | NULL, | |
1948 | NULL, | |
1949 | NULL, | |
1950 | NULL, | |
1951 | NULL, | |
1952 | NULL, | |
de009b76 AL |
1953 | NULL, |
1954 | NULL, | |
22569500 NIS |
1955 | NULL, /* flush */ |
1956 | NULL, /* fill */ | |
14a5cf38 JH |
1957 | NULL, |
1958 | NULL, | |
1959 | NULL, | |
1960 | NULL, | |
22569500 NIS |
1961 | NULL, /* get_base */ |
1962 | NULL, /* get_bufsiz */ | |
1963 | NULL, /* get_ptr */ | |
1964 | NULL, /* get_cnt */ | |
1965 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1966 | }; |
1967 | /*--------------------------------------------------------------------------------------*/ | |
1968 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1969 | /* |
71200d45 | 1970 | * "Methods" of the "base class" |
14a5cf38 | 1971 | */ |
9e353e3b NIS |
1972 | |
1973 | IV | |
f62ce20a | 1974 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1975 | { |
04892f78 | 1976 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1977 | } |
1978 | ||
f5b9d040 | 1979 | char * |
81428673 | 1980 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1981 | { |
1982 | char *s = buf; | |
81428673 | 1983 | if (PerlIOValid(f)) { |
de009b76 | 1984 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1985 | if (flags & PERLIO_F_APPEND) { |
1986 | *s++ = 'a'; | |
1987 | if (flags & PERLIO_F_CANREAD) { | |
1988 | *s++ = '+'; | |
1989 | } | |
14a5cf38 | 1990 | } |
81428673 NIS |
1991 | else if (flags & PERLIO_F_CANREAD) { |
1992 | *s++ = 'r'; | |
1993 | if (flags & PERLIO_F_CANWRITE) | |
1994 | *s++ = '+'; | |
1995 | } | |
1996 | else if (flags & PERLIO_F_CANWRITE) { | |
1997 | *s++ = 'w'; | |
1998 | if (flags & PERLIO_F_CANREAD) { | |
1999 | *s++ = '+'; | |
2000 | } | |
14a5cf38 | 2001 | } |
35990314 | 2002 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2003 | if (!(flags & PERLIO_F_CRLF)) |
2004 | *s++ = 'b'; | |
5f1a76d0 | 2005 | #endif |
81428673 | 2006 | } |
14a5cf38 JH |
2007 | *s = '\0'; |
2008 | return buf; | |
f5b9d040 NIS |
2009 | } |
2010 | ||
81428673 | 2011 | |
76ced9ad | 2012 | IV |
2dc2558e | 2013 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2014 | { |
de009b76 | 2015 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2016 | PERL_UNUSED_CONTEXT; |
8772537c | 2017 | PERL_UNUSED_ARG(arg); |
de009b76 | 2018 | |
14a5cf38 JH |
2019 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2020 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2021 | if (tab->Set_ptrcnt != NULL) | |
2022 | l->flags |= PERLIO_F_FASTGETS; | |
2023 | if (mode) { | |
3b6c1aba | 2024 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2025 | mode++; |
2026 | switch (*mode++) { | |
2027 | case 'r': | |
2028 | l->flags |= PERLIO_F_CANREAD; | |
2029 | break; | |
2030 | case 'a': | |
2031 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2032 | break; | |
2033 | case 'w': | |
2034 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2035 | break; | |
2036 | default: | |
93189314 | 2037 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2038 | return -1; |
2039 | } | |
2040 | while (*mode) { | |
2041 | switch (*mode++) { | |
2042 | case '+': | |
2043 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2044 | break; | |
2045 | case 'b': | |
2046 | l->flags &= ~PERLIO_F_CRLF; | |
2047 | break; | |
2048 | case 't': | |
2049 | l->flags |= PERLIO_F_CRLF; | |
2050 | break; | |
2051 | default: | |
93189314 | 2052 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2053 | return -1; |
2054 | } | |
2055 | } | |
2056 | } | |
2057 | else { | |
2058 | if (l->next) { | |
2059 | l->flags |= l->next->flags & | |
2060 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2061 | PERLIO_F_APPEND); | |
2062 | } | |
2063 | } | |
5e2ab84b | 2064 | #if 0 |
14a5cf38 JH |
2065 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
2066 | f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", | |
2067 | l->flags, PerlIO_modestr(f, temp)); | |
5e2ab84b | 2068 | #endif |
14a5cf38 | 2069 | return 0; |
76ced9ad NIS |
2070 | } |
2071 | ||
2072 | IV | |
f62ce20a | 2073 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2074 | { |
96a5add6 | 2075 | PERL_UNUSED_CONTEXT; |
8772537c | 2076 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2077 | return 0; |
760ac839 LW |
2078 | } |
2079 | ||
9e353e3b | 2080 | SSize_t |
f62ce20a | 2081 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2082 | { |
14a5cf38 | 2083 | /* |
71200d45 | 2084 | * Save the position as current head considers it |
14a5cf38 | 2085 | */ |
de009b76 | 2086 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2087 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2088 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2089 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2090 | } |
2091 | ||
f6c77cf1 | 2092 | SSize_t |
f62ce20a | 2093 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2094 | { |
14a5cf38 JH |
2095 | STDCHAR *buf = (STDCHAR *) vbuf; |
2096 | if (f) { | |
263df5f1 JH |
2097 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2098 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2099 | SETERRNO(EBADF, SS_IVCHAN); | |
2100 | return 0; | |
2101 | } | |
14a5cf38 | 2102 | while (count > 0) { |
93c2c2ec IZ |
2103 | get_cnt: |
2104 | { | |
14a5cf38 JH |
2105 | SSize_t avail = PerlIO_get_cnt(f); |
2106 | SSize_t take = 0; | |
2107 | if (avail > 0) | |
bb7a0f54 | 2108 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2109 | if (take > 0) { |
2110 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2111 | Copy(ptr, buf, take, STDCHAR); | |
2112 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2113 | count -= take; | |
2114 | buf += take; | |
93c2c2ec IZ |
2115 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2116 | goto get_cnt; | |
14a5cf38 JH |
2117 | } |
2118 | if (count > 0 && avail <= 0) { | |
2119 | if (PerlIO_fill(f) != 0) | |
2120 | break; | |
2121 | } | |
93c2c2ec | 2122 | } |
14a5cf38 JH |
2123 | } |
2124 | return (buf - (STDCHAR *) vbuf); | |
2125 | } | |
f6c77cf1 | 2126 | return 0; |
f6c77cf1 NIS |
2127 | } |
2128 | ||
9e353e3b | 2129 | IV |
f62ce20a | 2130 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2131 | { |
96a5add6 | 2132 | PERL_UNUSED_CONTEXT; |
8772537c | 2133 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2134 | return 0; |
9e353e3b NIS |
2135 | } |
2136 | ||
2137 | IV | |
f62ce20a | 2138 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2139 | { |
96a5add6 | 2140 | PERL_UNUSED_CONTEXT; |
8772537c | 2141 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2142 | return -1; |
06da4f11 NIS |
2143 | } |
2144 | ||
2145 | IV | |
f62ce20a | 2146 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2147 | { |
37725cdc NIS |
2148 | IV code = -1; |
2149 | if (PerlIOValid(f)) { | |
2150 | PerlIO *n = PerlIONext(f); | |
2151 | code = PerlIO_flush(f); | |
2152 | PerlIOBase(f)->flags &= | |
2153 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2154 | while (PerlIOValid(n)) { | |
de009b76 | 2155 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2156 | if (tab && tab->Close) { |
2157 | if ((*tab->Close)(aTHX_ n) != 0) | |
2158 | code = -1; | |
2159 | break; | |
2160 | } | |
2161 | else { | |
2162 | PerlIOBase(n)->flags &= | |
2163 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2164 | } | |
2165 | n = PerlIONext(n); | |
2166 | } | |
2167 | } | |
2168 | else { | |
2169 | SETERRNO(EBADF, SS_IVCHAN); | |
2170 | } | |
14a5cf38 | 2171 | return code; |
9e353e3b NIS |
2172 | } |
2173 | ||
2174 | IV | |
f62ce20a | 2175 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2176 | { |
96a5add6 | 2177 | PERL_UNUSED_CONTEXT; |
04892f78 | 2178 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2179 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2180 | } | |
2181 | return 1; | |
9e353e3b NIS |
2182 | } |
2183 | ||
2184 | IV | |
f62ce20a | 2185 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2186 | { |
96a5add6 | 2187 | PERL_UNUSED_CONTEXT; |
04892f78 | 2188 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2189 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2190 | } | |
2191 | return 1; | |
9e353e3b NIS |
2192 | } |
2193 | ||
2194 | void | |
f62ce20a | 2195 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2196 | { |
04892f78 | 2197 | if (PerlIOValid(f)) { |
dcda55fc | 2198 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2199 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2200 | if (PerlIOValid(n)) |
14a5cf38 JH |
2201 | PerlIO_clearerr(n); |
2202 | } | |
9e353e3b NIS |
2203 | } |
2204 | ||
2205 | void | |
f62ce20a | 2206 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2207 | { |
96a5add6 | 2208 | PERL_UNUSED_CONTEXT; |
04892f78 | 2209 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2210 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2211 | } | |
9e353e3b NIS |
2212 | } |
2213 | ||
93a8090d NIS |
2214 | SV * |
2215 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2216 | { | |
2217 | if (!arg) | |
a0714e2c | 2218 | return NULL; |
93a8090d NIS |
2219 | #ifdef sv_dup |
2220 | if (param) { | |
2221 | return sv_dup(arg, param); | |
2222 | } | |
2223 | else { | |
2224 | return newSVsv(arg); | |
2225 | } | |
2226 | #else | |
1b6737cc | 2227 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2228 | return newSVsv(arg); |
2229 | #endif | |
2230 | } | |
2231 | ||
2232 | PerlIO * | |
ecdeb87c | 2233 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2234 | { |
1b6737cc | 2235 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2236 | if (PerlIOValid(nexto)) { |
de009b76 | 2237 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2238 | if (tab && tab->Dup) |
2239 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2240 | else | |
2241 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2242 | } |
2243 | if (f) { | |
dcda55fc | 2244 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
210e727c | 2245 | SV *arg; |
93a8090d | 2246 | char buf[8]; |
fe5a182c JH |
2247 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2248 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2249 | if (self->Getarg) |
2250 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
2251 | else { | |
a0714e2c | 2252 | arg = NULL; |
93a8090d NIS |
2253 | } |
2254 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); | |
ecdeb87c | 2255 | if (arg) { |
93a8090d NIS |
2256 | SvREFCNT_dec(arg); |
2257 | } | |
2258 | } | |
2259 | return f; | |
2260 | } | |
2261 | ||
27da23d5 | 2262 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2263 | |
8b84d7dd | 2264 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2265 | static void |
2266 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2267 | dVAR; |
22c96fc1 | 2268 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2269 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2270 | int *new_array; |
2271 | ||
2272 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2273 | old_max, new_fd, new_max); | |
2274 | ||
2275 | if (new_fd < old_max) { | |
2276 | return; | |
2277 | } | |
2278 | ||
f4ae5be6 NC |
2279 | assert (new_max > new_fd); |
2280 | ||
10edeb5d JH |
2281 | new_array = |
2282 | (int*) PerlMemShared_realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2283 | |
2284 | if (!new_array) { | |
8b84d7dd | 2285 | #ifdef USE_ITHREADS |
6cb8cb21 | 2286 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2287 | #endif |
2288 | /* Can't use PerlIO to write as it allocates memory */ | |
2289 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2290 | PL_no_mem, strlen(PL_no_mem)); | |
2291 | my_exit(1); | |
2292 | } | |
2293 | ||
2294 | PL_perlio_fd_refcnt_size = new_max; | |
2295 | PL_perlio_fd_refcnt = new_array; | |
2296 | ||
95b63a38 JH |
2297 | PerlIO_debug("Zeroing %p, %d\n", |
2298 | (void*)(new_array + old_max), | |
2299 | new_max - old_max); | |
22c96fc1 NC |
2300 | |
2301 | Zero(new_array + old_max, new_max - old_max, int); | |
2302 | } | |
2303 | ||
2304 | ||
93a8090d NIS |
2305 | void |
2306 | PerlIO_init(pTHX) | |
2307 | { | |
8b84d7dd | 2308 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2309 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2310 | } |
2311 | ||
168d5872 NIS |
2312 | void |
2313 | PerlIOUnix_refcnt_inc(int fd) | |
2314 | { | |
27da23d5 | 2315 | dTHX; |
22c96fc1 | 2316 | if (fd >= 0) { |
97aff369 | 2317 | dVAR; |
22c96fc1 | 2318 | |
8b84d7dd | 2319 | #ifdef USE_ITHREADS |
6cb8cb21 | 2320 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2321 | #endif |
22c96fc1 NC |
2322 | if (fd >= PL_perlio_fd_refcnt_size) |
2323 | S_more_refcounted_fds(aTHX_ fd); | |
2324 | ||
27da23d5 | 2325 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd RGS |
2326 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
2327 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2328 | fd, PL_perlio_fd_refcnt[fd]); | |
2329 | } | |
2330 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2331 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2332 | |
8b84d7dd | 2333 | #ifdef USE_ITHREADS |
6cb8cb21 | 2334 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2335 | #endif |
8b84d7dd RGS |
2336 | } else { |
2337 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2338 | } |
2339 | } | |
2340 | ||
168d5872 NIS |
2341 | int |
2342 | PerlIOUnix_refcnt_dec(int fd) | |
2343 | { | |
27da23d5 | 2344 | dTHX; |
168d5872 | 2345 | int cnt = 0; |
22c96fc1 | 2346 | if (fd >= 0) { |
97aff369 | 2347 | dVAR; |
8b84d7dd | 2348 | #ifdef USE_ITHREADS |
6cb8cb21 | 2349 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2350 | #endif |
8b84d7dd RGS |
2351 | if (fd >= PL_perlio_fd_refcnt_size) { |
2352 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", | |
2353 | fd, PL_perlio_fd_refcnt_size); | |
2354 | } | |
2355 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2356 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", | |
2357 | fd, PL_perlio_fd_refcnt[fd]); | |
2358 | } | |
27da23d5 | 2359 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2360 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2361 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2362 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2363 | #endif |
8b84d7dd RGS |
2364 | } else { |
2365 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2366 | } |
2367 | return cnt; | |
2368 | } | |
2369 | ||
694c95cf JH |
2370 | void |
2371 | PerlIO_cleanup(pTHX) | |
2372 | { | |
97aff369 | 2373 | dVAR; |
694c95cf JH |
2374 | int i; |
2375 | #ifdef USE_ITHREADS | |
a25429c6 | 2376 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2377 | #else |
2378 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2379 | #endif |
e47547a8 | 2380 | |
694c95cf JH |
2381 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2382 | for (i=0; i < 3; i++) | |
2383 | PerlIOUnix_refcnt_inc(i); | |
2384 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2385 | /* Restore STDIN..STDERR refcount */ | |
2386 | for (i=0; i < 3; i++) | |
2387 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2388 | |
2389 | if (PL_known_layers) { | |
2390 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2391 | PL_known_layers = NULL; | |
2392 | } | |
27da23d5 | 2393 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2394 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2395 | PL_def_layerlist = NULL; | |
2396 | } | |
6cb8cb21 RGS |
2397 | } |
2398 | ||
2399 | void PerlIO_teardown(pTHX) /* Call only from PERL_SYS_TERM(). */ | |
2400 | { | |
2401 | #ifdef DEBUGGING | |
2402 | { | |
2403 | /* By now all filehandles should have been closed, so any | |
2404 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2405 | * errors. */ | |
2406 | int i; | |
2407 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
2408 | if (PL_perlio_fd_refcnt[i]) | |
2409 | PerlIO_debug("PerlIO_cleanup: fd %d refcnt=%d\n", | |
2410 | i, PL_perlio_fd_refcnt[i]); | |
2411 | } | |
2412 | } | |
2413 | #endif | |
8b84d7dd | 2414 | #ifdef USE_ITHREADS |
6cb8cb21 | 2415 | MUTEX_LOCK(&PL_perlio_mutex); |
1cd82952 RGS |
2416 | #endif |
2417 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ | |
2418 | && PL_perlio_fd_refcnt) { | |
2419 | #ifdef PERL_TRACK_MEMPOOL | |
2420 | Malloc_t ptr = (Malloc_t)((char*)PL_perlio_fd_refcnt-sTHX); | |
2421 | struct perl_memory_debug_header *const header | |
2422 | = (struct perl_memory_debug_header *)ptr; | |
2423 | /* Only the thread that allocated us can free us. */ | |
2424 | if (header->interpreter == aTHX) | |
2425 | #endif | |
2426 | { | |
6cb8cb21 | 2427 | PerlMemShared_free(PL_perlio_fd_refcnt); /* Not Safefree() because was allocated with PerlMemShared_realloc(). */ |
1cd82952 RGS |
2428 | PL_perlio_fd_refcnt = NULL; |
2429 | PL_perlio_fd_refcnt_size = 0; | |
2430 | } | |
2431 | } | |
8b84d7dd | 2432 | #ifdef USE_ITHREADS |
6cb8cb21 | 2433 | MUTEX_UNLOCK(&PL_perlio_mutex); |
1cd82952 | 2434 | #endif |
694c95cf JH |
2435 | } |
2436 | ||
2437 | ||
2438 | ||
9e353e3b | 2439 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2440 | /* |
71200d45 | 2441 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2442 | */ |
9e353e3b | 2443 | |
14a5cf38 | 2444 | typedef struct { |
22569500 NIS |
2445 | struct _PerlIO base; /* The generic part */ |
2446 | int fd; /* UNIX like file descriptor */ | |
2447 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2448 | } PerlIOUnix; |
2449 | ||
6f9d8c32 | 2450 | int |
9e353e3b | 2451 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2452 | { |
14a5cf38 | 2453 | int oflags = -1; |
3b6c1aba | 2454 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2455 | mode++; |
2456 | switch (*mode) { | |
2457 | case 'r': | |
2458 | oflags = O_RDONLY; | |
2459 | if (*++mode == '+') { | |
2460 | oflags = O_RDWR; | |
2461 | mode++; | |
2462 | } | |
2463 | break; | |
2464 | ||
2465 | case 'w': | |
2466 | oflags = O_CREAT | O_TRUNC; | |
2467 | if (*++mode == '+') { | |
2468 | oflags |= O_RDWR; | |
2469 | mode++; | |
2470 | } | |
2471 | else | |
2472 | oflags |= O_WRONLY; | |
2473 | break; | |
2474 | ||
2475 | case 'a': | |
2476 | oflags = O_CREAT | O_APPEND; | |
2477 | if (*++mode == '+') { | |
2478 | oflags |= O_RDWR; | |
2479 | mode++; | |
2480 | } | |
2481 | else | |
2482 | oflags |= O_WRONLY; | |
2483 | break; | |
2484 | } | |
2485 | if (*mode == 'b') { | |
2486 | oflags |= O_BINARY; | |
2487 | oflags &= ~O_TEXT; | |
2488 | mode++; | |
2489 | } | |
2490 | else if (*mode == 't') { | |
2491 | oflags |= O_TEXT; | |
2492 | oflags &= ~O_BINARY; | |
2493 | mode++; | |
2494 | } | |
2495 | /* | |
71200d45 | 2496 | * Always open in binary mode |
14a5cf38 JH |
2497 | */ |
2498 | oflags |= O_BINARY; | |
2499 | if (*mode || oflags == -1) { | |
93189314 | 2500 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2501 | oflags = -1; |
2502 | } | |
2503 | return oflags; | |
9e353e3b NIS |
2504 | } |
2505 | ||
2506 | IV | |
f62ce20a | 2507 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2508 | { |
96a5add6 | 2509 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2510 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2511 | } |
2512 | ||
aa063c35 NIS |
2513 | static void |
2514 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2515 | { |
de009b76 | 2516 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2517 | #if defined(WIN32) |
aa063c35 NIS |
2518 | Stat_t st; |
2519 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2520 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2521 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2522 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2523 | } | |
aa063c35 NIS |
2524 | else { |
2525 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2526 | } | |
6caa5a9c NIS |
2527 | } |
2528 | #endif | |
aa063c35 NIS |
2529 | s->fd = fd; |
2530 | s->oflags = imode; | |
2531 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2532 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2533 | } |
2534 | ||
2535 | IV | |
2536 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2537 | { | |
2538 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2539 | if (*PerlIONext(f)) { |
4b069b44 | 2540 | /* We never call down so do any pending stuff now */ |
03c0554d | 2541 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2542 | /* |
71200d45 | 2543 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2544 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2545 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2546 | */ |
acbd16bf | 2547 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2548 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2549 | } |
2550 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2551 | |
14a5cf38 | 2552 | return code; |
4b803d04 NIS |
2553 | } |
2554 | ||
c2fcde81 JH |
2555 | IV |
2556 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2557 | { | |
de009b76 | 2558 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2559 | Off_t new_loc; |
96a5add6 | 2560 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2561 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2562 | #ifdef ESPIPE | |
2563 | SETERRNO(ESPIPE, LIB_INVARG); | |
2564 | #else | |
2565 | SETERRNO(EINVAL, LIB_INVARG); | |
2566 | #endif | |
2567 | return -1; | |
2568 | } | |
0723351e NC |
2569 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2570 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2571 | return -1; |
c2fcde81 JH |
2572 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2573 | return 0; | |
2574 | } | |
2575 | ||
9e353e3b | 2576 | PerlIO * |
14a5cf38 JH |
2577 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2578 | IV n, const char *mode, int fd, int imode, | |
2579 | int perm, PerlIO *f, int narg, SV **args) | |
2580 | { | |
d9dac8cd | 2581 | if (PerlIOValid(f)) { |
14a5cf38 | 2582 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2583 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2584 | } |
2585 | if (narg > 0) { | |
3b6c1aba | 2586 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2587 | mode++; |
2588 | else { | |
2589 | imode = PerlIOUnix_oflags(mode); | |
2590 | perm = 0666; | |
2591 | } | |
2592 | if (imode != -1) { | |
e62f0680 | 2593 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2594 | fd = PerlLIO_open3(path, imode, perm); |
2595 | } | |
2596 | } | |
2597 | if (fd >= 0) { | |
3b6c1aba | 2598 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2599 | mode++; |
2600 | if (!f) { | |
2601 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2602 | } |
2603 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2604 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2605 | return NULL; | |
2606 | } | |
d9dac8cd | 2607 | } |
aa063c35 | 2608 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2609 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2610 | if (*mode == IoTYPE_APPEND) |
2611 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2612 | return f; |
2613 | } | |
2614 | else { | |
2615 | if (f) { | |
6f207bd3 | 2616 | NOOP; |
14a5cf38 | 2617 | /* |
71200d45 | 2618 | * FIXME: pop layers ??? |
14a5cf38 JH |
2619 | */ |
2620 | } | |
2621 | return NULL; | |
2622 | } | |
9e353e3b NIS |
2623 | } |
2624 | ||
71200d45 | 2625 | PerlIO * |
ecdeb87c | 2626 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2627 | { |
dcda55fc | 2628 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2629 | int fd = os->fd; |
ecdeb87c NIS |
2630 | if (flags & PERLIO_DUP_FD) { |
2631 | fd = PerlLIO_dup(fd); | |
2632 | } | |
22c96fc1 | 2633 | if (fd >= 0) { |
ecdeb87c | 2634 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2635 | if (f) { |
2636 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2637 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2638 | return f; |
2639 | } | |
71200d45 NIS |
2640 | } |
2641 | return NULL; | |
2642 | } | |
2643 | ||
2644 | ||
9e353e3b | 2645 | SSize_t |
f62ce20a | 2646 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2647 | { |
97aff369 | 2648 | dVAR; |
de009b76 | 2649 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2650 | #ifdef PERLIO_STD_SPECIAL |
2651 | if (fd == 0) | |
2652 | return PERLIO_STD_IN(fd, vbuf, count); | |
2653 | #endif | |
81428673 | 2654 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2655 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2656 | return 0; |
1fd8f4ce | 2657 | } |
14a5cf38 | 2658 | while (1) { |
b464bac0 | 2659 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2660 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2661 | if (len < 0) { |
2662 | if (errno != EAGAIN) { | |
2663 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2664 | } | |
2665 | } | |
2666 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2667 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2668 | SETERRNO(0,0); |
2669 | } | |
14a5cf38 JH |
2670 | return len; |
2671 | } | |
2672 | PERL_ASYNC_CHECK(); | |
2673 | } | |
b464bac0 | 2674 | /*NOTREACHED*/ |
9e353e3b NIS |
2675 | } |
2676 | ||
2677 | SSize_t | |
f62ce20a | 2678 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2679 | { |
97aff369 | 2680 | dVAR; |
de009b76 | 2681 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2682 | #ifdef PERLIO_STD_SPECIAL |
2683 | if (fd == 1 || fd == 2) | |
2684 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2685 | #endif | |
14a5cf38 | 2686 | while (1) { |
de009b76 | 2687 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2688 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2689 | if (len < 0) { |
2690 | if (errno != EAGAIN) { | |
2691 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2692 | } | |
2693 | } | |
14a5cf38 JH |
2694 | return len; |
2695 | } | |
2696 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2697 | } |
1b6737cc | 2698 | /*NOTREACHED*/ |
9e353e3b NIS |
2699 | } |
2700 | ||
9e353e3b | 2701 | Off_t |
f62ce20a | 2702 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2703 | { |
96a5add6 AL |
2704 | PERL_UNUSED_CONTEXT; |
2705 | ||
14a5cf38 | 2706 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2707 | } |
2708 | ||
71200d45 | 2709 | |
9e353e3b | 2710 | IV |
f62ce20a | 2711 | PerlIOUnix_close(pTHX_ PerlIO *f) |
9e353e3b | 2712 | { |
97aff369 | 2713 | dVAR; |
de009b76 | 2714 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2715 | int code = 0; |
168d5872 NIS |
2716 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2717 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2718 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2719 | return 0; | |
22569500 | 2720 | } |
93a8090d NIS |
2721 | } |
2722 | else { | |
93189314 | 2723 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2724 | return -1; |
2725 | } | |
14a5cf38 JH |
2726 | while (PerlLIO_close(fd) != 0) { |
2727 | if (errno != EINTR) { | |
2728 | code = -1; | |
2729 | break; | |
2730 | } | |
2731 | PERL_ASYNC_CHECK(); | |
2732 | } | |
2733 | if (code == 0) { | |
2734 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2735 | } | |
2736 | return code; | |
9e353e3b NIS |
2737 | } |
2738 | ||
27da23d5 | 2739 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2740 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2741 | "unix", |
2742 | sizeof(PerlIOUnix), | |
2743 | PERLIO_K_RAW, | |
2744 | PerlIOUnix_pushed, | |
44798d05 | 2745 | PerlIOBase_popped, |
14a5cf38 | 2746 | PerlIOUnix_open, |
86e05cf2 | 2747 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2748 | NULL, |
2749 | PerlIOUnix_fileno, | |
71200d45 | 2750 | PerlIOUnix_dup, |
14a5cf38 JH |
2751 | PerlIOUnix_read, |
2752 | PerlIOBase_unread, | |
2753 | PerlIOUnix_write, | |
2754 | PerlIOUnix_seek, | |
2755 | PerlIOUnix_tell, | |
2756 | PerlIOUnix_close, | |
22569500 NIS |
2757 | PerlIOBase_noop_ok, /* flush */ |
2758 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2759 | PerlIOBase_eof, |
2760 | PerlIOBase_error, | |
2761 | PerlIOBase_clearerr, | |
2762 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2763 | NULL, /* get_base */ |
2764 | NULL, /* get_bufsiz */ | |
2765 | NULL, /* get_ptr */ | |
2766 | NULL, /* get_cnt */ | |
2767 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2768 | }; |
2769 | ||
2770 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2771 | /* |
71200d45 | 2772 | * stdio as a layer |
14a5cf38 | 2773 | */ |
9e353e3b | 2774 | |
313e59c8 NIS |
2775 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2776 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2777 | broken by the last second glibc 2.3 fix | |
2778 | */ | |
2779 | #define STDIO_BUFFER_WRITABLE | |
2780 | #endif | |
2781 | ||
2782 | ||
14a5cf38 JH |
2783 | typedef struct { |
2784 | struct _PerlIO base; | |
22569500 | 2785 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2786 | } PerlIOStdio; |
2787 | ||
2788 | IV | |
f62ce20a | 2789 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2790 | { |
96a5add6 AL |
2791 | PERL_UNUSED_CONTEXT; |
2792 | ||
c4420975 AL |
2793 | if (PerlIOValid(f)) { |
2794 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2795 | if (s) | |
2796 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2797 | } |
2798 | errno = EBADF; | |
2799 | return -1; | |
9e353e3b NIS |
2800 | } |
2801 | ||
766a733e | 2802 | char * |
14a5cf38 JH |
2803 | PerlIOStdio_mode(const char *mode, char *tmode) |
2804 | { | |
de009b76 | 2805 | char * const ret = tmode; |
a0625d38 SR |
2806 | if (mode) { |
2807 | while (*mode) { | |
2808 | *tmode++ = *mode++; | |
2809 | } | |
14a5cf38 | 2810 | } |
95005ad8 | 2811 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2812 | *tmode++ = 'b'; |
2813 | #endif | |
14a5cf38 JH |
2814 | *tmode = '\0'; |
2815 | return ret; | |
2816 | } | |
2817 | ||
4b803d04 | 2818 | IV |
2dc2558e | 2819 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2820 | { |
1fd8f4ce NIS |
2821 | PerlIO *n; |
2822 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2823 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2824 | if (toptab == tab) { |
2825 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2826 | PerlIO_pop(aTHX_ f); | |
2827 | return 0; | |
2828 | } else { | |
de009b76 | 2829 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2830 | char tmode[8]; |
2831 | FILE *stdio; | |
81428673 | 2832 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2833 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2834 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2835 | /* We never call down so do any pending stuff now */ | |
2836 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2837 | } |
1fd8f4ce NIS |
2838 | else { |
2839 | return -1; | |
2840 | } | |
2841 | } | |
14a5cf38 | 2842 | } |
2dc2558e | 2843 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2844 | } |
2845 | ||
22569500 | 2846 | |
9e353e3b | 2847 | PerlIO * |
4b069b44 | 2848 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2849 | { |
14a5cf38 JH |
2850 | dTHX; |
2851 | PerlIO *f = NULL; | |
2852 | if (stdio) { | |
22569500 | 2853 | PerlIOStdio *s; |
4b069b44 NIS |
2854 | if (!mode || !*mode) { |
2855 | /* We need to probe to see how we can open the stream | |
2856 | so start with read/write and then try write and read | |
2857 | we dup() so that we can fclose without loosing the fd. | |
2858 | ||
2859 | Note that the errno value set by a failing fdopen | |
2860 | varies between stdio implementations. | |
2861 | */ | |
de009b76 | 2862 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2863 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2864 | if (!f2) { |
a33cf58c | 2865 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2866 | } |
2867 | if (!f2) { | |
a33cf58c | 2868 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2869 | } |
2870 | if (!f2) { | |
2871 | /* Don't seem to be able to open */ | |
2872 | PerlLIO_close(fd); | |
2873 | return f; | |
2874 | } | |
2875 | fclose(f2); | |
22569500 | 2876 | } |
a0714e2c | 2877 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2878 | s = PerlIOSelf(f, PerlIOStdio); |
2879 | s->stdio = stdio; | |
2880 | } | |
14a5cf38 JH |
2881 | } |
2882 | return f; | |
9e353e3b NIS |
2883 | } |
2884 | ||
2885 | PerlIO * | |
14a5cf38 JH |
2886 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2887 | IV n, const char *mode, int fd, int imode, | |
2888 | int perm, PerlIO *f, int narg, SV **args) | |
2889 | { | |
2890 | char tmode[8]; | |
d9dac8cd | 2891 | if (PerlIOValid(f)) { |
dcda55fc AL |
2892 | const char * const path = SvPV_nolen_const(*args); |
2893 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2894 | FILE *stdio; |
2895 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2896 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2897 | s->stdio); |
2898 | if (!s->stdio) | |
2899 | return NULL; | |
2900 | s->stdio = stdio; | |
1751d015 | 2901 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2902 | return f; |
2903 | } | |
2904 | else { | |
2905 | if (narg > 0) { | |
dcda55fc | 2906 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2907 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2908 | mode++; |
2909 | fd = PerlLIO_open3(path, imode, perm); | |
2910 | } | |
2911 | else { | |
95005ad8 GH |
2912 | FILE *stdio; |
2913 | bool appended = FALSE; | |
2914 | #ifdef __CYGWIN__ | |
2915 | /* Cygwin wants its 'b' early. */ | |
2916 | appended = TRUE; | |
2917 | mode = PerlIOStdio_mode(mode, tmode); | |
2918 | #endif | |
2919 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2920 | if (stdio) { |
6f0313ac JH |
2921 | if (!f) { |
2922 | f = PerlIO_allocate(aTHX); | |
2923 | } | |
95005ad8 GH |
2924 | if (!appended) |
2925 | mode = PerlIOStdio_mode(mode, tmode); | |
2926 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2927 | if (f) { | |
0f0f9e2b JH |
2928 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2929 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
2930 | } else { | |
2931 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
2932 | } |
2933 | return f; | |
2934 | } | |
2935 | else { | |
2936 | return NULL; | |
2937 | } | |
14a5cf38 JH |
2938 | } |
2939 | } | |
2940 | if (fd >= 0) { | |
2941 | FILE *stdio = NULL; | |
2942 | int init = 0; | |
3b6c1aba | 2943 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2944 | init = 1; |
2945 | mode++; | |
2946 | } | |
2947 | if (init) { | |
2948 | switch (fd) { | |
2949 | case 0: | |
2950 | stdio = PerlSIO_stdin; | |
2951 | break; | |
2952 | case 1: | |
2953 | stdio = PerlSIO_stdout; | |
2954 | break; | |
2955 | case 2: | |
2956 | stdio = PerlSIO_stderr; | |
2957 | break; | |
2958 | } | |
2959 | } | |
2960 | else { | |
2961 | stdio = PerlSIO_fdopen(fd, mode = | |
2962 | PerlIOStdio_mode(mode, tmode)); | |
2963 | } | |
2964 | if (stdio) { | |
d9dac8cd NIS |
2965 | if (!f) { |
2966 | f = PerlIO_allocate(aTHX); | |
2967 | } | |
a33cf58c | 2968 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
2969 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2970 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 2971 | } |
14a5cf38 JH |
2972 | return f; |
2973 | } | |
2974 | } | |
2975 | } | |
ee518936 | 2976 | return NULL; |
9e353e3b NIS |
2977 | } |
2978 | ||
1751d015 | 2979 | PerlIO * |
ecdeb87c | 2980 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
2981 | { |
2982 | /* This assumes no layers underneath - which is what | |
2983 | happens, but is not how I remember it. NI-S 2001/10/16 | |
2984 | */ | |
ecdeb87c | 2985 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 2986 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 2987 | const int fd = fileno(stdio); |
9217ff3f | 2988 | char mode[8]; |
ecdeb87c | 2989 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 2990 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
2991 | if (dfd >= 0) { |
2992 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
2993 | goto set_this; | |
ecdeb87c NIS |
2994 | } |
2995 | else { | |
6f207bd3 | 2996 | NOOP; |
ecdeb87c NIS |
2997 | /* FIXME: To avoid messy error recovery if dup fails |
2998 | re-use the existing stdio as though flag was not set | |
2999 | */ | |
3000 | } | |
3001 | } | |
9217ff3f NIS |
3002 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
3003 | set_this: | |
694c95cf JH |
3004 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
3005 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
1751d015 NIS |
3006 | } |
3007 | return f; | |
3008 | } | |
3009 | ||
0d7a5398 NIS |
3010 | static int |
3011 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3012 | { | |
96a5add6 AL |
3013 | PERL_UNUSED_CONTEXT; |
3014 | ||
0d7a5398 | 3015 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3016 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3017 | */ |
ef8eacb8 AT |
3018 | # if defined(__UCLIBC__) |
3019 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3020 | f->__filedes = -1; | |
3021 | return 1; | |
3022 | # elif defined(__GLIBC__) | |
0d7a5398 | 3023 | /* There may be a better way for GLIBC: |
37725cdc | 3024 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3025 | */ |
3026 | f->_fileno = -1; | |
3027 | return 1; | |
3028 | # elif defined(__sun__) | |
f5992bc4 | 3029 | PERL_UNUSED_ARG(f); |
cfedb851 | 3030 | return 0; |
0d7a5398 NIS |
3031 | # elif defined(__hpux) |
3032 | f->__fileH = 0xff; | |
3033 | f->__fileL = 0xff; | |
3034 | return 1; | |
9837d373 | 3035 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3036 | your platform does not have special entry try this one. |
9837d373 NIS |
3037 | [For OSF only have confirmation for Tru64 (alpha) |
3038 | but assume other OSFs will be similar.] | |
37725cdc | 3039 | */ |
9837d373 | 3040 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3041 | f->_file = -1; |
3042 | return 1; | |
3043 | # elif defined(__FreeBSD__) | |
3044 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3045 | - we could insert a dummy func in the _close function entry |
3046 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3047 | */ |
3048 | f->_file = -1; | |
0c49ea6a SU |
3049 | return 1; |
3050 | # elif defined(__OpenBSD__) | |
3051 | /* There may be a better way on OpenBSD: | |
3052 | - we could insert a dummy func in the _close function entry | |
3053 | f->_close = (int (*)(void *)) dummy_close; | |
3054 | */ | |
3055 | f->_file = -1; | |
0d7a5398 | 3056 | return 1; |
59ad941d IZ |
3057 | # elif defined(__EMX__) |
3058 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3059 | f->_handle = -1; | |
3060 | return 1; | |
0d7a5398 NIS |
3061 | # elif defined(__CYGWIN__) |
3062 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3063 | - we could insert a dummy func in the _close function entry |
3064 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3065 | */ |
3066 | f->_file = -1; | |
3067 | return 1; | |
3068 | # elif defined(WIN32) | |
3069 | # if defined(__BORLANDC__) | |
3070 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3071 | # elif defined(UNDER_CE) |
3072 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3073 | structure at all | |
3074 | */ | |
0d7a5398 NIS |
3075 | # else |
3076 | f->_file = -1; | |
3077 | # endif | |
3078 | return 1; | |
3079 | # else | |
3080 | #if 0 | |
37725cdc | 3081 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3082 | (which isn't thread safe) instead |
37725cdc | 3083 | */ |
0d7a5398 NIS |
3084 | # error "Don't know how to set FILE.fileno on your platform" |
3085 | #endif | |
8772537c | 3086 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3087 | return 0; |
3088 | # endif | |
3089 | } | |
3090 | ||
1751d015 | 3091 | IV |
f62ce20a | 3092 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3093 | { |
c4420975 | 3094 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3095 | if (!stdio) { |
3096 | errno = EBADF; | |
3097 | return -1; | |
3098 | } | |
9217ff3f | 3099 | else { |
de009b76 | 3100 | const int fd = fileno(stdio); |
0d7a5398 | 3101 | int invalidate = 0; |
bbfd922f | 3102 | IV result = 0; |
0d7a5398 NIS |
3103 | int saveerr = 0; |
3104 | int dupfd = 0; | |
3105 | #ifdef SOCKS5_VERSION_NAME | |
37725cdc NIS |
3106 | /* Socks lib overrides close() but stdio isn't linked to |
3107 | that library (though we are) - so we must call close() | |
3108 | on sockets on stdio's behalf. | |
3109 | */ | |
0d7a5398 NIS |
3110 | int optval; |
3111 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3112 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3113 | invalidate = 1; |
0d7a5398 | 3114 | #endif |
6b4ce6c8 | 3115 | if (PerlIOUnix_refcnt_dec(fd) > 0) /* File descriptor still in use */ |
0d7a5398 | 3116 | invalidate = 1; |
0d7a5398 | 3117 | if (invalidate) { |
6b4ce6c8 AL |
3118 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3119 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3120 | return 0; | |
3121 | if (stdio == stdout || stdio == stderr) | |
3122 | return PerlIO_flush(f); | |
37725cdc NIS |
3123 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3124 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3125 | fileno slot of the FILE * | |
3126 | */ | |
bbfd922f | 3127 | result = PerlIO_flush(f); |
0d7a5398 | 3128 | saveerr = errno; |
6b4ce6c8 AL |
3129 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
3130 | if (!invalidate) | |
3131 | dupfd = PerlLIO_dup(fd); | |
37725cdc | 3132 | } |
0d7a5398 | 3133 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3134 | /* We treat error from stdio as success if we invalidated |
3135 | errno may NOT be expected EBADF | |
e8529473 NIS |
3136 | */ |
3137 | if (invalidate && result != 0) { | |
0d7a5398 NIS |
3138 | errno = saveerr; |
3139 | result = 0; | |
37725cdc | 3140 | } |
6b4ce6c8 AL |
3141 | #ifdef SOCKS5_VERSION_NAME |
3142 | /* in SOCKS' case, let close() determine return value */ | |
3143 | result = close(fd); | |
3144 | #endif | |
0d7a5398 NIS |
3145 | if (dupfd) { |
3146 | PerlLIO_dup2(dupfd,fd); | |
8a521f28 | 3147 | PerlLIO_close(dupfd); |
9217ff3f NIS |
3148 | } |
3149 | return result; | |
37725cdc | 3150 | } |
1751d015 NIS |
3151 | } |
3152 | ||
9e353e3b | 3153 | SSize_t |
f62ce20a | 3154 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3155 | { |
97aff369 | 3156 | dVAR; |
c4420975 | 3157 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3158 | SSize_t got = 0; |
4d948241 NIS |
3159 | for (;;) { |
3160 | if (count == 1) { | |
3161 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3162 | /* | |
3163 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3164 | * stdio does not do that for fread() | |
3165 | */ | |
de009b76 | 3166 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3167 | if (ch != EOF) { |
3168 | *buf = ch; | |
3169 | got = 1; | |
3170 | } | |
14a5cf38 | 3171 | } |
4d948241 NIS |
3172 | else |
3173 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3174 | if (got == 0 && PerlSIO_ferror(s)) |
3175 | got = -1; | |
42a7a32f | 3176 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3177 | break; |
3178 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3179 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3180 | } |
14a5cf38 | 3181 | return got; |
9e353e3b NIS |
3182 | } |
3183 | ||
3184 | SSize_t | |
f62ce20a | 3185 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3186 | { |
14a5cf38 | 3187 | SSize_t unread = 0; |
c4420975 | 3188 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3189 | |
313e59c8 | 3190 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3191 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3192 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3193 | STDCHAR *base = PerlIO_get_base(f); | |
3194 | SSize_t cnt = PerlIO_get_cnt(f); | |
3195 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3196 | SSize_t avail = ptr - base; | |
3197 | if (avail > 0) { | |
3198 | if (avail > count) { | |
3199 | avail = count; | |
3200 | } | |
3201 | ptr -= avail; | |
3202 | Move(buf-avail,ptr,avail,STDCHAR); | |
3203 | count -= avail; | |
3204 | unread += avail; | |
3205 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3206 | if (PerlSIO_feof(s) && unread >= 0) |
3207 | PerlSIO_clearerr(s); | |
3208 | } | |
3209 | } | |
313e59c8 NIS |
3210 | else |
3211 | #endif | |
3212 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3213 | /* We can get pointer to buffer but not its base |
3214 | Do ungetc() but check chars are ending up in the | |
3215 | buffer | |
3216 | */ | |
3217 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3218 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3219 | while (count > 0) { | |
de009b76 | 3220 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3221 | if (ungetc(ch,s) != ch) { |
3222 | /* ungetc did not work */ | |
3223 | break; | |
3224 | } | |
3225 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3226 | /* Did not change pointer as expected */ | |
3227 | fgetc(s); /* get char back again */ | |
3228 | break; | |
3229 | } | |
3230 | /* It worked ! */ | |
3231 | count--; | |
3232 | unread++; | |
93679785 NIS |
3233 | } |
3234 | } | |
3235 | ||
3236 | if (count > 0) { | |
3237 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3238 | } |
3239 | return unread; | |
9e353e3b NIS |
3240 | } |
3241 | ||
3242 | SSize_t | |
f62ce20a | 3243 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3244 | { |
97aff369 | 3245 | dVAR; |
4d948241 NIS |
3246 | SSize_t got; |
3247 | for (;;) { | |
3248 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3249 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3250 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3251 | break; |
3252 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3253 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3254 | } |
3255 | return got; | |
9e353e3b NIS |
3256 | } |
3257 | ||
94a175e1 | 3258 | IV |
f62ce20a | 3259 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3260 | { |
c4420975 | 3261 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3262 | PERL_UNUSED_CONTEXT; |
3263 | ||
94a175e1 | 3264 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3265 | } |
3266 | ||
3267 | Off_t | |
f62ce20a | 3268 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3269 | { |
c4420975 | 3270 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3271 | PERL_UNUSED_CONTEXT; |
3272 | ||
94a175e1 | 3273 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3274 | } |
3275 | ||
3276 | IV | |
f62ce20a | 3277 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3278 | { |
c4420975 | 3279 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3280 | PERL_UNUSED_CONTEXT; |
3281 | ||
14a5cf38 JH |
3282 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3283 | return PerlSIO_fflush(stdio); | |
3284 | } | |
3285 | else { | |
6f207bd3 | 3286 | NOOP; |
88b61e10 | 3287 | #if 0 |
14a5cf38 JH |
3288 | /* |
3289 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3290 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3291 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3292 | * layer read-to-read |
14a5cf38 JH |
3293 | */ |
3294 | /* | |
71200d45 | 3295 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3296 | */ |
79852593 | 3297 | const int err = errno; |
14a5cf38 JH |
3298 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
3299 | errno = err; | |
88b61e10 | 3300 | #endif |
14a5cf38 JH |
3301 | } |
3302 | return 0; | |
9e353e3b NIS |
3303 | } |
3304 | ||
3305 | IV | |
f62ce20a | 3306 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3307 | { |
96a5add6 AL |
3308 | PERL_UNUSED_CONTEXT; |
3309 | ||
14a5cf38 | 3310 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3311 | } |
3312 | ||
3313 | IV | |
f62ce20a | 3314 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3315 | { |
96a5add6 AL |
3316 | PERL_UNUSED_CONTEXT; |
3317 | ||
263df5f1 | 3318 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3319 | } |
3320 | ||
3321 | void | |
f62ce20a | 3322 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3323 | { |
96a5add6 AL |
3324 | PERL_UNUSED_CONTEXT; |
3325 | ||
14a5cf38 | 3326 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3327 | } |
3328 | ||
3329 | void | |
f62ce20a | 3330 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3331 | { |
96a5add6 AL |
3332 | PERL_UNUSED_CONTEXT; |
3333 | ||
9e353e3b | 3334 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3335 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3336 | #else |
bd61b366 | 3337 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3338 | #endif |
3339 | } | |
3340 | ||
3341 | #ifdef FILE_base | |
3342 | STDCHAR * | |
f62ce20a | 3343 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3344 | { |
c4420975 | 3345 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3346 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3347 | } |
3348 | ||
3349 | Size_t | |
f62ce20a | 3350 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3351 | { |
c4420975 | 3352 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3353 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3354 | } |
3355 | #endif | |
3356 | ||
3357 | #ifdef USE_STDIO_PTR | |
3358 | STDCHAR * | |
f62ce20a | 3359 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3360 | { |
c4420975 | 3361 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3362 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3363 | } |
3364 | ||
3365 | SSize_t | |
f62ce20a | 3366 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3367 | { |
c4420975 | 3368 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3369 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3370 | } |
3371 | ||
3372 | void | |
f62ce20a | 3373 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3374 | { |
c4420975 | 3375 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3376 | if (ptr != NULL) { |
9e353e3b | 3377 | #ifdef STDIO_PTR_LVALUE |
d06fc7d4 | 3378 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3379 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
14a5cf38 | 3380 | if (PerlSIO_get_cnt(stdio) != (cnt)) { |
14a5cf38 JH |
3381 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
3382 | } | |
9e353e3b NIS |
3383 | #endif |
3384 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3385 | /* |
71200d45 | 3386 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3387 | */ |
3388 | return; | |
9e353e3b | 3389 | #endif |
22569500 | 3390 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3391 | PerlProc_abort(); |
22569500 | 3392 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3393 | } |
3394 | /* | |
71200d45 | 3395 | * Now (or only) set cnt |
14a5cf38 | 3396 | */ |
9e353e3b | 3397 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3398 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3399 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3400 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3401 | PerlSIO_set_ptr(stdio, |
3402 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3403 | cnt)); | |
22569500 | 3404 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3405 | PerlProc_abort(); |
22569500 NIS |
3406 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3407 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3408 | } |
3409 | ||
93679785 | 3410 | |
9e353e3b NIS |
3411 | #endif |
3412 | ||
93679785 NIS |
3413 | IV |
3414 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3415 | { | |
c4420975 | 3416 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3417 | int c; |
96a5add6 AL |
3418 | PERL_UNUSED_CONTEXT; |
3419 | ||
93679785 NIS |
3420 | /* |
3421 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3422 | */ | |
3423 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3424 | if (PerlSIO_fflush(stdio) != 0) | |
3425 | return EOF; | |
3426 | } | |
3427 | c = PerlSIO_fgetc(stdio); | |
3428 | if (c == EOF) | |
3429 | return EOF; | |
3430 | ||
3431 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3432 | |
3433 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3434 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3435 | /* Fake ungetc() to the real buffer in case system's ungetc |
3436 | goes elsewhere | |
3437 | */ | |
3438 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3439 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3440 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3441 | if (ptr == base+1) { | |
3442 | *--ptr = (STDCHAR) c; | |
3443 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3444 | if (PerlSIO_feof(stdio)) | |
3445 | PerlSIO_clearerr(stdio); | |
3446 | return 0; | |
3447 | } | |
3448 | } | |
313e59c8 NIS |
3449 | else |
3450 | #endif | |
3451 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3452 | STDCHAR ch = c; |
3453 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3454 | return 0; | |
3455 | } | |
3456 | } | |
93679785 NIS |
3457 | #endif |
3458 | ||
3459 | #if defined(VMS) | |
3460 | /* An ungetc()d char is handled separately from the regular | |
3461 | * buffer, so we stuff it in the buffer ourselves. | |
3462 | * Should never get called as should hit code above | |
3463 | */ | |
bad9695d NIS |
3464 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3465 | (*stdio)->_cnt++; | |
93679785 NIS |
3466 | #else |
3467 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3468 | using ungetc(). |
93679785 NIS |
3469 | */ |
3470 | if (PerlSIO_ungetc(c, stdio) != c) | |
3471 | return EOF; | |
3472 | #endif | |
3473 | return 0; | |
3474 | } | |
3475 | ||
3476 | ||
3477 | ||
27da23d5 | 3478 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3479 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3480 | "stdio", |
3481 | sizeof(PerlIOStdio), | |
86e05cf2 | 3482 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3483 | PerlIOStdio_pushed, |
44798d05 | 3484 | PerlIOBase_popped, |
14a5cf38 | 3485 | PerlIOStdio_open, |
86e05cf2 | 3486 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3487 | NULL, |
3488 | PerlIOStdio_fileno, | |
71200d45 | 3489 | PerlIOStdio_dup, |
14a5cf38 JH |
3490 | PerlIOStdio_read, |
3491 | PerlIOStdio_unread, | |
3492 | PerlIOStdio_write, | |
3493 | PerlIOStdio_seek, | |
3494 | PerlIOStdio_tell, | |
3495 | PerlIOStdio_close, | |
3496 | PerlIOStdio_flush, | |
3497 | PerlIOStdio_fill, | |
3498 | PerlIOStdio_eof, | |
3499 | PerlIOStdio_error, | |
3500 | PerlIOStdio_clearerr, | |
3501 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3502 | #ifdef FILE_base |
14a5cf38 JH |
3503 | PerlIOStdio_get_base, |
3504 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3505 | #else |
14a5cf38 JH |
3506 | NULL, |
3507 | NULL, | |
9e353e3b NIS |
3508 | #endif |
3509 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3510 | PerlIOStdio_get_ptr, |
3511 | PerlIOStdio_get_cnt, | |
15b61c98 | 3512 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3513 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3514 | # else |
3515 | NULL, | |
3516 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3517 | #else | |
3518 | NULL, | |
14a5cf38 JH |
3519 | NULL, |
3520 | NULL, | |
15b61c98 | 3521 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3522 | }; |
3523 | ||
b9d6bf13 JH |
3524 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3525 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3526 | FILE * |
81428673 | 3527 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3528 | { |
e87a358a | 3529 | dTHX; |
81428673 NIS |
3530 | FILE *stdio = NULL; |
3531 | if (PerlIOValid(f)) { | |
3532 | char buf[8]; | |
3533 | PerlIO_flush(f); | |
3534 | if (!mode || !*mode) { | |
3535 | mode = PerlIO_modestr(f, buf); | |
3536 | } | |
3537 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3538 | if (stdio) { | |
3539 | PerlIOl *l = *f; | |
9f75cc58 | 3540 | PerlIO *f2; |
81428673 NIS |
3541 | /* De-link any lower layers so new :stdio sticks */ |
3542 | *f = NULL; | |
a0714e2c | 3543 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3544 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 NIS |
3545 | s->stdio = stdio; |
3546 | /* Link previous lower layers under new one */ | |
3547 | *PerlIONext(f) = l; | |
3548 | } | |
3549 | else { | |
3550 | /* restore layers list */ | |
3551 | *f = l; | |
3552 | } | |
a33cf58c | 3553 | } |
14a5cf38 JH |
3554 | } |
3555 | return stdio; | |
9e353e3b NIS |
3556 | } |
3557 | ||
81428673 | 3558 | |
9e353e3b NIS |
3559 | FILE * |
3560 | PerlIO_findFILE(PerlIO *f) | |
3561 | { | |
14a5cf38 JH |
3562 | PerlIOl *l = *f; |
3563 | while (l) { | |
3564 | if (l->tab == &PerlIO_stdio) { | |
3565 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3566 | return s->stdio; | |
3567 | } | |
3568 | l = *PerlIONext(&l); | |
f7e7eb72 | 3569 | } |
4b069b44 | 3570 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bd61b366 | 3571 | return PerlIO_exportFILE(f, NULL); |
9e353e3b NIS |
3572 | } |
3573 | ||
b9d6bf13 | 3574 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3575 | void |
3576 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3577 | { | |
27da23d5 | 3578 | dVAR; |
22569500 NIS |
3579 | PerlIOl *l; |
3580 | while ((l = *p)) { | |
3581 | if (l->tab == &PerlIO_stdio) { | |
3582 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3583 | if (s->stdio == f) { | |
3584 | dTHX; | |
3585 | PerlIO_pop(aTHX_ p); | |
3586 | return; | |
3587 | } | |
3588 | } | |
3589 | p = PerlIONext(p); | |
3590 | } | |
3591 | return; | |
9e353e3b NIS |
3592 | } |
3593 | ||
3594 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3595 | /* |
71200d45 | 3596 | * perlio buffer layer |
14a5cf38 | 3597 | */ |
9e353e3b | 3598 | |
5e2ab84b | 3599 | IV |
2dc2558e | 3600 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3601 | { |
14a5cf38 | 3602 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3603 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3604 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3605 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3606 | } | |
4b069b44 | 3607 | if (*PerlIONext(f)) { |
de009b76 | 3608 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3609 | if (posn != (Off_t) - 1) { |
3610 | b->posn = posn; | |
3611 | } | |
14a5cf38 | 3612 | } |
2dc2558e | 3613 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3614 | } |
3615 | ||
9e353e3b | 3616 | PerlIO * |
14a5cf38 JH |
3617 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3618 | IV n, const char *mode, int fd, int imode, int perm, | |
3619 | PerlIO *f, int narg, SV **args) | |
3620 | { | |
04892f78 | 3621 | if (PerlIOValid(f)) { |
14a5cf38 | 3622 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3623 | PerlIO_funcs *tab = |
3624 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3625 | if (tab && tab->Open) | |
3626 | next = | |
3627 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3628 | next, narg, args); | |
2dc2558e | 3629 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3630 | return NULL; |
3631 | } | |
3632 | } | |
3633 | else { | |
04892f78 | 3634 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3635 | int init = 0; |
3b6c1aba | 3636 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3637 | init = 1; |
3638 | /* | |
71200d45 | 3639 | * mode++; |
14a5cf38 JH |
3640 | */ |
3641 | } | |
67363c0d JH |
3642 | if (tab && tab->Open) |
3643 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3644 | f, narg, args); | |
3645 | else | |
3646 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3647 | if (f) { |
22569500 | 3648 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3649 | /* |
3650 | * if push fails during open, open fails. close will pop us. | |
3651 | */ | |
3652 | PerlIO_close (f); | |
3653 | return NULL; | |
3654 | } else { | |
3655 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3656 | if (init && fd == 2) { |
3657 | /* | |
3658 | * Initial stderr is unbuffered | |
3659 | */ | |
3660 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3661 | } | |
23b84778 IZ |
3662 | #ifdef PERLIO_USING_CRLF |
3663 | # ifdef PERLIO_IS_BINMODE_FD | |
3664 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3665 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3666 | else |
3667 | # endif | |
3668 | /* | |
3669 | * do something about failing setmode()? --jhi | |
3670 | */ | |
3671 | PerlLIO_setmode(fd, O_BINARY); | |
3672 | #endif | |
14a5cf38 JH |
3673 | } |
3674 | } | |
ee518936 | 3675 | } |
14a5cf38 | 3676 | return f; |
9e353e3b NIS |
3677 | } |
3678 | ||
14a5cf38 JH |
3679 | /* |
3680 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3681 | * read or write state. For write state, we put the postponed data through |
3682 | * the next layers. For read state, we seek() the next layers to the | |
3683 | * offset given by current position in the buffer, and discard the buffer | |
3684 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3685 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3686 | */ |
9e353e3b | 3687 | IV |
f62ce20a | 3688 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3689 | { |
dcda55fc | 3690 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3691 | int code = 0; |
04892f78 | 3692 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3693 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3694 | /* | |
71200d45 | 3695 | * write() the buffer |
14a5cf38 | 3696 | */ |
de009b76 AL |
3697 | const STDCHAR *buf = b->buf; |
3698 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3699 | while (p < b->ptr) { |
3700 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3701 | if (count > 0) { | |
3702 | p += count; | |
3703 | } | |
3704 | else if (count < 0 || PerlIO_error(n)) { | |
3705 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3706 | code = -1; | |
3707 | break; | |
3708 | } | |
3709 | } | |
3710 | b->posn += (p - buf); | |
3711 | } | |
3712 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3713 | STDCHAR *buf = PerlIO_get_base(f); | |
3714 | /* | |
71200d45 | 3715 | * Note position change |
14a5cf38 JH |
3716 | */ |
3717 | b->posn += (b->ptr - buf); | |
3718 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3719 | /* We did not consume all of it - try and seek downstream to |
3720 | our logical position | |
14a5cf38 | 3721 | */ |
4b069b44 | 3722 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3723 | /* Reload n as some layers may pop themselves on seek */ |
3724 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3725 | } |
ba5c3fe9 | 3726 | else { |
4b069b44 NIS |
3727 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3728 | data is lost for good - so return saying "ok" having undone | |
3729 | the position adjust | |
3730 | */ | |
3731 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3732 | return code; |
3733 | } | |
14a5cf38 JH |
3734 | } |
3735 | } | |
3736 | b->ptr = b->end = b->buf; | |
3737 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3738 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3739 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3740 | code = -1; |
3741 | return code; | |
6f9d8c32 NIS |
3742 | } |
3743 | ||
93c2c2ec IZ |
3744 | /* This discards the content of the buffer after b->ptr, and rereads |
3745 | * the buffer from the position off in the layer downstream; here off | |
3746 | * is at offset corresponding to b->ptr - b->buf. | |
3747 | */ | |
06da4f11 | 3748 | IV |
f62ce20a | 3749 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3750 | { |
dcda55fc | 3751 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3752 | PerlIO *n = PerlIONext(f); |
3753 | SSize_t avail; | |
3754 | /* | |
4b069b44 NIS |
3755 | * Down-stream flush is defined not to loose read data so is harmless. |
3756 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3757 | */ |
93c2c2ec | 3758 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3759 | return -1; |
3760 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3761 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3762 | |
3763 | if (!b->buf) | |
22569500 | 3764 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3765 | |
0f0eef27 | 3766 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3767 | |
14a5cf38 | 3768 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3769 | |
3770 | if (!PerlIOValid(n)) { | |
3771 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3772 | return -1; | |
3773 | } | |
3774 | ||
14a5cf38 JH |
3775 | if (PerlIO_fast_gets(n)) { |
3776 | /* | |
04892f78 | 3777 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3778 | * ->Read() because that will loop till it gets what we asked for |
3779 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3780 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3781 | */ |
3782 | avail = PerlIO_get_cnt(n); | |
3783 | if (avail <= 0) { | |
3784 | avail = PerlIO_fill(n); | |
3785 | if (avail == 0) | |
3786 | avail = PerlIO_get_cnt(n); | |
3787 | else { | |
3788 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3789 | avail = 0; | |
3790 | } | |
3791 | } | |
3792 | if (avail > 0) { | |
3793 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3794 | const SSize_t cnt = avail; |
eb160463 | 3795 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3796 | avail = b->bufsiz; |
3797 | Copy(ptr, b->buf, avail, STDCHAR); | |
3798 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3799 | } | |
3800 | } | |
3801 | else { | |
3802 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3803 | } | |
3804 | if (avail <= 0) { | |
3805 | if (avail == 0) | |
3806 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3807 | else | |
3808 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3809 | return -1; | |
3810 | } | |
3811 | b->end = b->buf + avail; | |
3812 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3813 | return 0; | |
06da4f11 NIS |
3814 | } |
3815 | ||
6f9d8c32 | 3816 | SSize_t |
f62ce20a | 3817 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3818 | { |
04892f78 | 3819 | if (PerlIOValid(f)) { |
dcda55fc | 3820 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3821 | if (!b->ptr) |
3822 | PerlIO_get_base(f); | |
f62ce20a | 3823 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3824 | } |
3825 | return 0; | |
6f9d8c32 NIS |
3826 | } |
3827 | ||
9e353e3b | 3828 | SSize_t |
f62ce20a | 3829 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3830 | { |
14a5cf38 | 3831 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3832 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3833 | SSize_t unread = 0; |
3834 | SSize_t avail; | |
3835 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3836 | PerlIO_flush(f); | |
3837 | if (!b->buf) | |
3838 | PerlIO_get_base(f); | |
3839 | if (b->buf) { | |
3840 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3841 | /* | |
3842 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3843 | * which have been read back to buffer start |
14a5cf38 JH |
3844 | */ |
3845 | avail = (b->ptr - b->buf); | |
3846 | } | |
3847 | else { | |
3848 | /* | |
3849 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3850 | * unread |
14a5cf38 JH |
3851 | */ |
3852 | avail = b->bufsiz; | |
3853 | b->end = b->buf + avail; | |
3854 | b->ptr = b->end; | |
3855 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3856 | /* | |
71200d45 | 3857 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3858 | */ |
3859 | b->posn -= b->bufsiz; | |
3860 | } | |
3861 | if (avail > (SSize_t) count) { | |
3862 | /* | |
71200d45 | 3863 | * If we have space for more than count, just move count |
14a5cf38 JH |
3864 | */ |
3865 | avail = count; | |
3866 | } | |
3867 | if (avail > 0) { | |
3868 | b->ptr -= avail; | |
3869 | buf -= avail; | |
3870 | /* | |
3871 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3872 | * there |
14a5cf38 JH |
3873 | */ |
3874 | if (buf != b->ptr) { | |
3875 | Copy(buf, b->ptr, avail, STDCHAR); | |
3876 | } | |
3877 | count -= avail; | |
3878 | unread += avail; | |
3879 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3880 | } | |
3881 | } | |
93679785 NIS |
3882 | if (count > 0) { |
3883 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3884 | } | |
14a5cf38 | 3885 | return unread; |
760ac839 LW |
3886 | } |
3887 | ||
9e353e3b | 3888 | SSize_t |
f62ce20a | 3889 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3890 | { |
de009b76 | 3891 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3892 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3893 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3894 | Size_t written = 0; |
3895 | if (!b->buf) | |
3896 | PerlIO_get_base(f); | |
3897 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3898 | return 0; | |
0678cb22 NIS |
3899 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3900 | if (PerlIO_flush(f) != 0) { | |
3901 | return 0; | |
3902 | } | |
3903 | } | |
ee56a6b9 CS |
3904 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
3905 | flushptr = buf + count; | |
3906 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
3907 | --flushptr; | |
3908 | } | |
14a5cf38 JH |
3909 | while (count > 0) { |
3910 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
3911 | if ((SSize_t) count < avail) | |
3912 | avail = count; | |
ee56a6b9 CS |
3913 | if (flushptr > buf && flushptr <= buf + avail) |
3914 | avail = flushptr - buf; | |
14a5cf38 | 3915 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
3916 | if (avail) { |
3917 | Copy(buf, b->ptr, avail, STDCHAR); | |
3918 | count -= avail; | |
3919 | buf += avail; | |
3920 | written += avail; | |
3921 | b->ptr += avail; | |
3922 | if (buf == flushptr) | |
3923 | PerlIO_flush(f); | |
14a5cf38 JH |
3924 | } |
3925 | if (b->ptr >= (b->buf + b->bufsiz)) | |
3926 | PerlIO_flush(f); | |
3927 | } | |
3928 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
3929 | PerlIO_flush(f); | |
3930 | return written; | |
9e353e3b NIS |
3931 | } |
3932 | ||
94a175e1 | 3933 | IV |
f62ce20a | 3934 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3935 | { |
14a5cf38 JH |
3936 | IV code; |
3937 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
3938 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
3939 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
3940 | if (code == 0) { | |
de009b76 | 3941 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3942 | b->posn = PerlIO_tell(PerlIONext(f)); |
3943 | } | |
9e353e3b | 3944 | } |
14a5cf38 | 3945 | return code; |
9e353e3b NIS |
3946 | } |
3947 | ||
3948 | Off_t | |
f62ce20a | 3949 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 3950 | { |
dcda55fc | 3951 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3952 | /* |
71200d45 | 3953 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
3954 | */ |
3955 | Off_t posn = b->posn; | |
37725cdc | 3956 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
3957 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
3958 | #if 1 | |
3959 | /* As O_APPEND files are normally shared in some sense it is better | |
3960 | to flush : | |
3961 | */ | |
3962 | PerlIO_flush(f); | |
3963 | #else | |
37725cdc | 3964 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
3965 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
3966 | #endif | |
3967 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
3968 | } | |
14a5cf38 JH |
3969 | if (b->buf) { |
3970 | /* | |
71200d45 | 3971 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
3972 | */ |
3973 | posn += (b->ptr - b->buf); | |
3974 | } | |
3975 | return posn; | |
9e353e3b NIS |
3976 | } |
3977 | ||
3978 | IV | |
44798d05 NIS |
3979 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
3980 | { | |
de009b76 AL |
3981 | const IV code = PerlIOBase_popped(aTHX_ f); |
3982 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
3983 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3984 | Safefree(b->buf); | |
3985 | } | |
dcda55fc | 3986 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
3987 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
3988 | return code; | |
3989 | } | |
3990 | ||
3991 | IV | |
f62ce20a | 3992 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 3993 | { |
de009b76 AL |
3994 | const IV code = PerlIOBase_close(aTHX_ f); |
3995 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 3996 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 3997 | Safefree(b->buf); |
14a5cf38 | 3998 | } |
dcda55fc | 3999 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4000 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4001 | return code; | |
760ac839 LW |
4002 | } |
4003 | ||
9e353e3b | 4004 | STDCHAR * |
f62ce20a | 4005 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4006 | { |
dcda55fc | 4007 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4008 | if (!b->buf) |
4009 | PerlIO_get_base(f); | |
4010 | return b->ptr; | |
9e353e3b NIS |
4011 | } |
4012 | ||
05d1247b | 4013 | SSize_t |
f62ce20a | 4014 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4015 | { |
dcda55fc | 4016 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4017 | if (!b->buf) |
4018 | PerlIO_get_base(f); | |
4019 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4020 | return (b->end - b->ptr); | |
4021 | return 0; | |
9e353e3b NIS |
4022 | } |
4023 | ||
4024 | STDCHAR * | |
f62ce20a | 4025 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4026 | { |
dcda55fc | 4027 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4028 | PERL_UNUSED_CONTEXT; |
4029 | ||
14a5cf38 JH |
4030 | if (!b->buf) { |
4031 | if (!b->bufsiz) | |
4032 | b->bufsiz = 4096; | |
a02a5408 | 4033 | b->buf = Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4034 | if (!b->buf) { |
4035 | b->buf = (STDCHAR *) & b->oneword; | |
4036 | b->bufsiz = sizeof(b->oneword); | |
4037 | } | |
dcda55fc | 4038 | b->end = b->ptr = b->buf; |
06da4f11 | 4039 | } |
14a5cf38 | 4040 | return b->buf; |
9e353e3b NIS |
4041 | } |
4042 | ||
4043 | Size_t | |
f62ce20a | 4044 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4045 | { |
dcda55fc | 4046 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4047 | if (!b->buf) |
4048 | PerlIO_get_base(f); | |
4049 | return (b->end - b->buf); | |
9e353e3b NIS |
4050 | } |
4051 | ||
4052 | void | |
f62ce20a | 4053 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4054 | { |
dcda55fc | 4055 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4056 | if (!b->buf) |
4057 | PerlIO_get_base(f); | |
4058 | b->ptr = ptr; | |
4059 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) { | |
14a5cf38 JH |
4060 | assert(PerlIO_get_cnt(f) == cnt); |
4061 | assert(b->ptr >= b->buf); | |
4062 | } | |
4063 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
760ac839 LW |
4064 | } |
4065 | ||
71200d45 | 4066 | PerlIO * |
ecdeb87c | 4067 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4068 | { |
ecdeb87c | 4069 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4070 | } |
4071 | ||
4072 | ||
4073 | ||
27da23d5 | 4074 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4075 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4076 | "perlio", |
4077 | sizeof(PerlIOBuf), | |
86e05cf2 | 4078 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4079 | PerlIOBuf_pushed, |
44798d05 | 4080 | PerlIOBuf_popped, |
14a5cf38 | 4081 | PerlIOBuf_open, |
86e05cf2 | 4082 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4083 | NULL, |
4084 | PerlIOBase_fileno, | |
71200d45 | 4085 | PerlIOBuf_dup, |
14a5cf38 JH |
4086 | PerlIOBuf_read, |
4087 | PerlIOBuf_unread, | |
4088 | PerlIOBuf_write, | |
4089 | PerlIOBuf_seek, | |
4090 | PerlIOBuf_tell, | |
4091 | PerlIOBuf_close, | |
4092 | PerlIOBuf_flush, | |
4093 | PerlIOBuf_fill, | |
4094 | PerlIOBase_eof, | |
4095 | PerlIOBase_error, | |
4096 | PerlIOBase_clearerr, | |
4097 | PerlIOBase_setlinebuf, | |
4098 | PerlIOBuf_get_base, | |
4099 | PerlIOBuf_bufsiz, | |
4100 | PerlIOBuf_get_ptr, | |
4101 | PerlIOBuf_get_cnt, | |
4102 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4103 | }; |
4104 | ||
66ecd56b | 4105 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4106 | /* |
71200d45 | 4107 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4108 | */ |
5e2ab84b NIS |
4109 | |
4110 | IV | |
f62ce20a | 4111 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4112 | { |
14a5cf38 | 4113 | /* |
71200d45 | 4114 | * Should never happen |
14a5cf38 JH |
4115 | */ |
4116 | PerlIO_flush(f); | |
4117 | return 0; | |
5e2ab84b NIS |
4118 | } |
4119 | ||
4120 | IV | |
f62ce20a | 4121 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4122 | { |
14a5cf38 | 4123 | /* |
71200d45 | 4124 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4125 | */ |
4126 | PerlIO_flush(f); | |
4127 | return PerlIO_close(f); | |
5e2ab84b NIS |
4128 | } |
4129 | ||
94a175e1 | 4130 | IV |
f62ce20a | 4131 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4132 | { |
14a5cf38 | 4133 | /* |
71200d45 | 4134 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4135 | */ |
4136 | PerlIO_flush(f); | |
4137 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4138 | } |
4139 | ||
4140 | ||
4141 | IV | |
f62ce20a | 4142 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4143 | { |
dcda55fc | 4144 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4145 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4146 | Safefree(b->buf); |
14a5cf38 JH |
4147 | b->buf = NULL; |
4148 | } | |
4149 | PerlIO_pop(aTHX_ f); | |
4150 | return 0; | |
5e2ab84b NIS |
4151 | } |
4152 | ||
4153 | void | |
f62ce20a | 4154 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4155 | { |
14a5cf38 JH |
4156 | if (cnt <= 0) { |
4157 | PerlIO_flush(f); | |
4158 | } | |
4159 | else { | |
f62ce20a | 4160 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4161 | } |
5e2ab84b NIS |
4162 | } |
4163 | ||
4164 | IV | |
2dc2558e | 4165 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4166 | { |
de009b76 | 4167 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4168 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4169 | /* |
71200d45 NIS |
4170 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4171 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4172 | */ |
4173 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4174 | (PerlIOBase(PerlIONext(f))-> | |
4175 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4176 | return code; | |
5e2ab84b NIS |
4177 | } |
4178 | ||
4179 | SSize_t | |
f62ce20a | 4180 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4181 | { |
14a5cf38 JH |
4182 | SSize_t avail = PerlIO_get_cnt(f); |
4183 | SSize_t got = 0; | |
eb160463 | 4184 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4185 | avail = count; |
4186 | if (avail > 0) | |
f62ce20a | 4187 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4188 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4189 | const SSize_t more = |
14a5cf38 JH |
4190 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4191 | if (more >= 0 || got == 0) | |
4192 | got += more; | |
4193 | } | |
4194 | return got; | |
5e2ab84b NIS |
4195 | } |
4196 | ||
27da23d5 | 4197 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4198 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4199 | "pending", |
4200 | sizeof(PerlIOBuf), | |
86e05cf2 | 4201 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4202 | PerlIOPending_pushed, |
44798d05 | 4203 | PerlIOBuf_popped, |
14a5cf38 | 4204 | NULL, |
86e05cf2 | 4205 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4206 | NULL, |
4207 | PerlIOBase_fileno, | |
71200d45 | 4208 | PerlIOBuf_dup, |
14a5cf38 JH |
4209 | PerlIOPending_read, |
4210 | PerlIOBuf_unread, | |
4211 | PerlIOBuf_write, | |
4212 | PerlIOPending_seek, | |
4213 | PerlIOBuf_tell, | |
4214 | PerlIOPending_close, | |
4215 | PerlIOPending_flush, | |
4216 | PerlIOPending_fill, | |
4217 | PerlIOBase_eof, | |
4218 | PerlIOBase_error, | |
4219 | PerlIOBase_clearerr, | |
4220 | PerlIOBase_setlinebuf, | |
4221 | PerlIOBuf_get_base, | |
4222 | PerlIOBuf_bufsiz, | |
4223 | PerlIOBuf_get_ptr, | |
4224 | PerlIOBuf_get_cnt, | |
4225 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4226 | }; |
4227 | ||
4228 | ||
4229 | ||
4230 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4231 | /* |
4232 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4233 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4234 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4235 | * |
4236 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4237 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4238 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4239 | * that it ends at c->nl; these two cases can be distinguished by | |
4240 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4241 | * _unread() and _flush() calls. | |
4242 | * It only matters for read operations. | |
66ecd56b NIS |
4243 | */ |
4244 | ||
14a5cf38 | 4245 | typedef struct { |
22569500 NIS |
4246 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4247 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4248 | * buffer */ |
99efab12 NIS |
4249 | } PerlIOCrlf; |
4250 | ||
ff1e3883 JD |
4251 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4252 | * Otherwise the :crlf layer would always revert back to | |
4253 | * raw mode. | |
4254 | */ | |
4255 | static void | |
4256 | S_inherit_utf8_flag(PerlIO *f) | |
4257 | { | |
4258 | PerlIO *g = PerlIONext(f); | |
4259 | if (PerlIOValid(g)) { | |
4260 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4261 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4262 | } | |
4263 | } | |
4264 | } | |
4265 | ||
f5b9d040 | 4266 | IV |
2dc2558e | 4267 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4268 | { |
14a5cf38 JH |
4269 | IV code; |
4270 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4271 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4272 | #if 0 |
14a5cf38 JH |
4273 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
4274 | f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", | |
4275 | PerlIOBase(f)->flags); | |
5e2ab84b | 4276 | #endif |
8229d19f JH |
4277 | { |
4278 | /* Enable the first CRLF capable layer you can find, but if none | |
4279 | * found, the one we just pushed is fine. This results in at | |
4280 | * any given moment at most one CRLF-capable layer being enabled | |
4281 | * in the whole layer stack. */ | |
4282 | PerlIO *g = PerlIONext(f); | |
ff1e3883 | 4283 | while (PerlIOValid(g)) { |
8229d19f JH |
4284 | PerlIOl *b = PerlIOBase(g); |
4285 | if (b && b->tab == &PerlIO_crlf) { | |
4286 | if (!(b->flags & PERLIO_F_CRLF)) | |
4287 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4288 | S_inherit_utf8_flag(g); |
8229d19f JH |
4289 | PerlIO_pop(aTHX_ f); |
4290 | return code; | |
4291 | } | |
4292 | g = PerlIONext(g); | |
4293 | } | |
4294 | } | |
ff1e3883 | 4295 | S_inherit_utf8_flag(f); |
14a5cf38 | 4296 | return code; |
f5b9d040 NIS |
4297 | } |
4298 | ||
4299 | ||
99efab12 | 4300 | SSize_t |
f62ce20a | 4301 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4302 | { |
dcda55fc | 4303 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4304 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4305 | *(c->nl) = 0xd; |
4306 | c->nl = NULL; | |
4307 | } | |
4308 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4309 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4310 | else { |
4311 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4312 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4313 | SSize_t unread = 0; | |
4314 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4315 | PerlIO_flush(f); | |
4316 | if (!b->buf) | |
4317 | PerlIO_get_base(f); | |
4318 | if (b->buf) { | |
4319 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4320 | b->end = b->ptr = b->buf + b->bufsiz; | |
4321 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4322 | b->posn -= b->bufsiz; | |
4323 | } | |
4324 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4325 | const int ch = *--buf; |
14a5cf38 JH |
4326 | if (ch == '\n') { |
4327 | if (b->ptr - 2 >= b->buf) { | |
4328 | *--(b->ptr) = 0xa; | |
4329 | *--(b->ptr) = 0xd; | |
4330 | unread++; | |
4331 | count--; | |
4332 | } | |
4333 | else { | |
93c2c2ec IZ |
4334 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4335 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4336 | unread++; | |
4337 | count--; | |
14a5cf38 JH |
4338 | } |
4339 | } | |
4340 | else { | |
4341 | *--(b->ptr) = ch; | |
4342 | unread++; | |
4343 | count--; | |
4344 | } | |
4345 | } | |
4346 | } | |
4347 | return unread; | |
4348 | } | |
99efab12 NIS |
4349 | } |
4350 | ||
93c2c2ec | 4351 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4352 | SSize_t |
f62ce20a | 4353 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4354 | { |
dcda55fc | 4355 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4356 | if (!b->buf) |
4357 | PerlIO_get_base(f); | |
4358 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4359 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4360 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4361 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4362 | scan: |
4363 | while (nl < b->end && *nl != 0xd) | |
4364 | nl++; | |
4365 | if (nl < b->end && *nl == 0xd) { | |
4366 | test: | |
4367 | if (nl + 1 < b->end) { | |
4368 | if (nl[1] == 0xa) { | |
4369 | *nl = '\n'; | |
4370 | c->nl = nl; | |
4371 | } | |
4372 | else { | |
4373 | /* | |
71200d45 | 4374 | * Not CR,LF but just CR |
14a5cf38 JH |
4375 | */ |
4376 | nl++; | |
4377 | goto scan; | |
4378 | } | |
4379 | } | |
4380 | else { | |
4381 | /* | |
71200d45 | 4382 | * Blast - found CR as last char in buffer |
14a5cf38 | 4383 | */ |
e87a358a | 4384 | |
14a5cf38 JH |
4385 | if (b->ptr < nl) { |
4386 | /* | |
4387 | * They may not care, defer work as long as | |
71200d45 | 4388 | * possible |
14a5cf38 | 4389 | */ |
a0d1d361 | 4390 | c->nl = nl; |
14a5cf38 JH |
4391 | return (nl - b->ptr); |
4392 | } | |
4393 | else { | |
4394 | int code; | |
22569500 | 4395 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4396 | * flush() is concerned */ |
22569500 | 4397 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4398 | /* Note as we have moved buf up flush's |
4399 | posn += ptr-buf | |
4400 | will naturally make posn point at CR | |
4401 | */ | |
22569500 NIS |
4402 | b->bufsiz--; /* Buffer is thus smaller */ |
4403 | code = PerlIO_fill(f); /* Fetch some more */ | |
4404 | b->bufsiz++; /* Restore size for next time */ | |
4405 | b->buf--; /* Point at space */ | |
4406 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4407 | * off */ |
22569500 | 4408 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4409 | if (code == 0) |
22569500 | 4410 | goto test; /* fill() call worked */ |
14a5cf38 | 4411 | /* |
71200d45 | 4412 | * CR at EOF - just fall through |
14a5cf38 | 4413 | */ |
a0d1d361 | 4414 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4415 | } |
4416 | } | |
4417 | } | |
4418 | } | |
4419 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4420 | } | |
4421 | return 0; | |
99efab12 NIS |
4422 | } |
4423 | ||
4424 | void | |
f62ce20a | 4425 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4426 | { |
dcda55fc AL |
4427 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4428 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4429 | if (!b->buf) |
4430 | PerlIO_get_base(f); | |
4431 | if (!ptr) { | |
a0d1d361 | 4432 | if (c->nl) { |
14a5cf38 | 4433 | ptr = c->nl + 1; |
22569500 | 4434 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4435 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4436 | ptr--; |
4437 | } | |
4438 | } | |
14a5cf38 JH |
4439 | else { |
4440 | ptr = b->end; | |
14a5cf38 JH |
4441 | } |
4442 | ptr -= cnt; | |
4443 | } | |
4444 | else { | |
6f207bd3 | 4445 | NOOP; |
3b4bd3fd | 4446 | #if 0 |
14a5cf38 | 4447 | /* |
71200d45 | 4448 | * Test code - delete when it works ... |
14a5cf38 | 4449 | */ |
3b4bd3fd | 4450 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4451 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4452 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4453 | /* Defered CR at end of buffer case - we lied about count */ |
4454 | chk--; | |
22569500 | 4455 | } |
14a5cf38 JH |
4456 | chk -= cnt; |
4457 | ||
a0d1d361 | 4458 | if (ptr != chk ) { |
99ef548b | 4459 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
14a5cf38 JH |
4460 | " nl=%p e=%p for %d", ptr, chk, flags, c->nl, |
4461 | b->end, cnt); | |
4462 | } | |
99ef548b | 4463 | #endif |
14a5cf38 JH |
4464 | } |
4465 | if (c->nl) { | |
4466 | if (ptr > c->nl) { | |
4467 | /* | |
71200d45 | 4468 | * They have taken what we lied about |
14a5cf38 JH |
4469 | */ |
4470 | *(c->nl) = 0xd; | |
4471 | c->nl = NULL; | |
4472 | ptr++; | |
4473 | } | |
4474 | } | |
4475 | b->ptr = ptr; | |
4476 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4477 | } |
4478 | ||
4479 | SSize_t | |
f62ce20a | 4480 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4481 | { |
14a5cf38 | 4482 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4483 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4484 | else { |
dcda55fc | 4485 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4486 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4487 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4488 | if (!b->buf) |
4489 | PerlIO_get_base(f); | |
4490 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4491 | return 0; | |
4492 | while (buf < ebuf) { | |
dcda55fc | 4493 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4494 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4495 | while (buf < ebuf && b->ptr < eptr) { | |
4496 | if (*buf == '\n') { | |
4497 | if ((b->ptr + 2) > eptr) { | |
4498 | /* | |
71200d45 | 4499 | * Not room for both |
14a5cf38 JH |
4500 | */ |
4501 | PerlIO_flush(f); | |
4502 | break; | |
4503 | } | |
4504 | else { | |
22569500 NIS |
4505 | *(b->ptr)++ = 0xd; /* CR */ |
4506 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4507 | buf++; |
4508 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4509 | PerlIO_flush(f); | |
4510 | break; | |
4511 | } | |
4512 | } | |
4513 | } | |
4514 | else { | |
dcda55fc | 4515 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4516 | } |
4517 | if (b->ptr >= eptr) { | |
4518 | PerlIO_flush(f); | |
4519 | break; | |
4520 | } | |
4521 | } | |
4522 | } | |
4523 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4524 | PerlIO_flush(f); | |
4525 | return (buf - (STDCHAR *) vbuf); | |
4526 | } | |
99efab12 NIS |
4527 | } |
4528 | ||
4529 | IV | |
f62ce20a | 4530 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4531 | { |
dcda55fc | 4532 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4533 | if (c->nl) { |
4534 | *(c->nl) = 0xd; | |
4535 | c->nl = NULL; | |
4536 | } | |
f62ce20a | 4537 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4538 | } |
4539 | ||
86e05cf2 NIS |
4540 | IV |
4541 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4542 | { | |
4543 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4544 | /* In text mode - flush any pending stuff and flip it */ | |
4545 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4546 | #ifndef PERLIO_USING_CRLF | |
4547 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
4548 | if (PerlIOBase(f)->tab == &PerlIO_crlf) { | |
4549 | PerlIO_pop(aTHX_ f); | |
4550 | } | |
4551 | #endif | |
4552 | } | |
4553 | return 0; | |
4554 | } | |
4555 | ||
27da23d5 | 4556 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4557 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4558 | "crlf", |
4559 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4560 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4561 | PerlIOCrlf_pushed, |
44798d05 | 4562 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4563 | PerlIOBuf_open, |
86e05cf2 | 4564 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4565 | NULL, |
4566 | PerlIOBase_fileno, | |
71200d45 | 4567 | PerlIOBuf_dup, |
de009b76 | 4568 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4569 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4570 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4571 | PerlIOBuf_seek, |
4572 | PerlIOBuf_tell, | |
4573 | PerlIOBuf_close, | |
4574 | PerlIOCrlf_flush, | |
4575 | PerlIOBuf_fill, | |
4576 | PerlIOBase_eof, | |
4577 | PerlIOBase_error, | |
4578 | PerlIOBase_clearerr, | |
4579 | PerlIOBase_setlinebuf, | |
4580 | PerlIOBuf_get_base, | |
4581 | PerlIOBuf_bufsiz, | |
4582 | PerlIOBuf_get_ptr, | |
4583 | PerlIOCrlf_get_cnt, | |
4584 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4585 | }; |
4586 | ||
06da4f11 NIS |
4587 | #ifdef HAS_MMAP |
4588 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4589 | /* |
71200d45 | 4590 | * mmap as "buffer" layer |
14a5cf38 | 4591 | */ |
06da4f11 | 4592 | |
14a5cf38 | 4593 | typedef struct { |
22569500 NIS |
4594 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4595 | Mmap_t mptr; /* Mapped address */ | |
4596 | Size_t len; /* mapped length */ | |
4597 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4598 | } PerlIOMmap; |
4599 | ||
4600 | IV | |
f62ce20a | 4601 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4602 | { |
27da23d5 | 4603 | dVAR; |
de009b76 AL |
4604 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4605 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4606 | IV code = 0; |
4607 | if (m->len) | |
4608 | abort(); | |
4609 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4610 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4611 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4612 | Stat_t st; |
4613 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4614 | if (code == 0 && S_ISREG(st.st_mode)) { |
4615 | SSize_t len = st.st_size - b->posn; | |
4616 | if (len > 0) { | |
4617 | Off_t posn; | |
27da23d5 JH |
4618 | if (PL_mmap_page_size <= 0) |
4619 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4620 | PL_mmap_page_size); | |
14a5cf38 JH |
4621 | if (b->posn < 0) { |
4622 | /* | |
4623 | * This is a hack - should never happen - open should | |
71200d45 | 4624 | * have set it ! |
14a5cf38 JH |
4625 | */ |
4626 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4627 | } | |
27da23d5 | 4628 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 JH |
4629 | len = st.st_size - posn; |
4630 | m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); | |
4631 | if (m->mptr && m->mptr != (Mmap_t) - 1) { | |
a5262162 | 4632 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4633 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4634 | #endif |
a5262162 | 4635 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4636 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4637 | #endif |
14a5cf38 JH |
4638 | PerlIOBase(f)->flags = |
4639 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4640 | b->end = ((STDCHAR *) m->mptr) + len; | |
4641 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4642 | b->ptr = b->buf; | |
4643 | m->len = len; | |
4644 | } | |
4645 | else { | |
4646 | b->buf = NULL; | |
4647 | } | |
4648 | } | |
4649 | else { | |
4650 | PerlIOBase(f)->flags = | |
4651 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4652 | b->buf = NULL; | |
4653 | b->ptr = b->end = b->ptr; | |
4654 | code = -1; | |
4655 | } | |
4656 | } | |
4657 | } | |
4658 | return code; | |
06da4f11 NIS |
4659 | } |
4660 | ||
4661 | IV | |
e87a358a | 4662 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4663 | { |
dcda55fc | 4664 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4665 | IV code = 0; |
4666 | if (m->len) { | |
dcda55fc | 4667 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4668 | if (b->buf) { |
1ccb7c8d JH |
4669 | /* The munmap address argument is tricky: depending on the |
4670 | * standard it is either "void *" or "caddr_t" (which is | |
4671 | * usually "char *" (signed or unsigned). If we cast it | |
4672 | * to "void *", those that have it caddr_t and an uptight | |
4673 | * C++ compiler, will freak out. But casting it as char* | |
4674 | * should work. Maybe. (Using Mmap_t figured out by | |
4675 | * Configure doesn't always work, apparently.) */ | |
4676 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4677 | b->buf = NULL; |
4678 | m->len = 0; | |
4679 | m->mptr = NULL; | |
4680 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4681 | code = -1; | |
4682 | } | |
4683 | b->ptr = b->end = b->buf; | |
4684 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4685 | } | |
4686 | return code; | |
06da4f11 NIS |
4687 | } |
4688 | ||
4689 | STDCHAR * | |
f62ce20a | 4690 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4691 | { |
dcda55fc AL |
4692 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4693 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4694 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4695 | /* | |
71200d45 | 4696 | * Already have a readbuffer in progress |
14a5cf38 JH |
4697 | */ |
4698 | return b->buf; | |
4699 | } | |
4700 | if (b->buf) { | |
4701 | /* | |
71200d45 | 4702 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4703 | */ |
22569500 NIS |
4704 | m->bbuf = b->buf; /* save it in case we need it again */ |
4705 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4706 | } |
4707 | if (!b->buf) { | |
22569500 | 4708 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4709 | if (!b->buf) { |
4710 | /* | |
71200d45 | 4711 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4712 | */ |
4713 | b->buf = m->bbuf; | |
4714 | } | |
4715 | } | |
4716 | b->ptr = b->end = b->buf; | |
4717 | if (b->buf) | |
4718 | return b->buf; | |
f62ce20a | 4719 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4720 | } |
4721 | ||
4722 | SSize_t | |
f62ce20a | 4723 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4724 | { |
dcda55fc AL |
4725 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4726 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4727 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4728 | PerlIO_flush(f); | |
4729 | if (b->ptr && (b->ptr - count) >= b->buf | |
4730 | && memEQ(b->ptr - count, vbuf, count)) { | |
4731 | b->ptr -= count; | |
4732 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4733 | return count; | |
4734 | } | |
4735 | if (m->len) { | |
4736 | /* | |
71200d45 | 4737 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4738 | */ |
4739 | PerlIO_flush(f); | |
4740 | /* | |
71200d45 | 4741 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4742 | */ |
4743 | if (!b->buf && m->bbuf) | |
4744 | b->buf = m->bbuf; | |
4745 | if (!b->buf) { | |
f62ce20a | 4746 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4747 | m->bbuf = b->buf; |
4748 | } | |
4749 | } | |
f62ce20a | 4750 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4751 | } |
4752 | ||
4753 | SSize_t | |
f62ce20a | 4754 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4755 | { |
de009b76 AL |
4756 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4757 | PerlIOBuf * const b = &m->base; | |
4758 | ||
14a5cf38 JH |
4759 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4760 | /* | |
71200d45 | 4761 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4762 | */ |
4763 | if (m->len) { | |
e87a358a | 4764 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4765 | return 0; |
4766 | } | |
4767 | /* | |
71200d45 | 4768 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4769 | */ |
4770 | if (!b->buf && m->bbuf) | |
4771 | b->buf = m->bbuf; | |
4772 | if (!b->buf) { | |
f62ce20a | 4773 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4774 | m->bbuf = b->buf; |
4775 | } | |
06da4f11 | 4776 | } |
f62ce20a | 4777 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4778 | } |
4779 | ||
4780 | IV | |
f62ce20a | 4781 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4782 | { |
dcda55fc AL |
4783 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4784 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4785 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4786 | /* |
71200d45 | 4787 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4788 | */ |
4789 | if (b->buf) { | |
4790 | if (m->len) { | |
4791 | /* | |
71200d45 | 4792 | * Unmap the buffer |
14a5cf38 | 4793 | */ |
e87a358a | 4794 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4795 | code = -1; |
4796 | } | |
4797 | else { | |
4798 | /* | |
4799 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4800 | * remember it in case we need one later |
14a5cf38 JH |
4801 | */ |
4802 | m->bbuf = b->buf; | |
4803 | } | |
4804 | } | |
4805 | return code; | |
06da4f11 NIS |
4806 | } |
4807 | ||
4808 | IV | |
f62ce20a | 4809 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4810 | { |
dcda55fc | 4811 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4812 | IV code = PerlIO_flush(f); |
4813 | if (code == 0 && !b->buf) { | |
f62ce20a | 4814 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4815 | } |
4816 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4817 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4818 | } |
4819 | return code; | |
06da4f11 NIS |
4820 | } |
4821 | ||
4822 | IV | |
f62ce20a | 4823 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4824 | { |
dcda55fc AL |
4825 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4826 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4827 | IV code = PerlIO_flush(f); |
4828 | if (m->bbuf) { | |
4829 | b->buf = m->bbuf; | |
4830 | m->bbuf = NULL; | |
4831 | b->ptr = b->end = b->buf; | |
4832 | } | |
f62ce20a | 4833 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4834 | code = -1; |
4835 | return code; | |
06da4f11 NIS |
4836 | } |
4837 | ||
71200d45 | 4838 | PerlIO * |
ecdeb87c | 4839 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4840 | { |
ecdeb87c | 4841 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4842 | } |
4843 | ||
06da4f11 | 4844 | |
27da23d5 | 4845 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4846 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4847 | "mmap", |
4848 | sizeof(PerlIOMmap), | |
86e05cf2 | 4849 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4850 | PerlIOBuf_pushed, |
44798d05 | 4851 | PerlIOBuf_popped, |
14a5cf38 | 4852 | PerlIOBuf_open, |
86e05cf2 | 4853 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4854 | NULL, |
4855 | PerlIOBase_fileno, | |
71200d45 | 4856 | PerlIOMmap_dup, |
14a5cf38 JH |
4857 | PerlIOBuf_read, |
4858 | PerlIOMmap_unread, | |
4859 | PerlIOMmap_write, | |
4860 | PerlIOBuf_seek, | |
4861 | PerlIOBuf_tell, | |
4862 | PerlIOBuf_close, | |
4863 | PerlIOMmap_flush, | |
4864 | PerlIOMmap_fill, | |
4865 | PerlIOBase_eof, | |
4866 | PerlIOBase_error, | |
4867 | PerlIOBase_clearerr, | |
4868 | PerlIOBase_setlinebuf, | |
4869 | PerlIOMmap_get_base, | |
4870 | PerlIOBuf_bufsiz, | |
4871 | PerlIOBuf_get_ptr, | |
4872 | PerlIOBuf_get_cnt, | |
4873 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4874 | }; |
4875 | ||
22569500 | 4876 | #endif /* HAS_MMAP */ |
06da4f11 | 4877 | |
9e353e3b | 4878 | PerlIO * |
e87a358a | 4879 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4880 | { |
97aff369 | 4881 | dVAR; |
a1ea730d | 4882 | if (!PL_perlio) { |
14a5cf38 JH |
4883 | PerlIO_stdstreams(aTHX); |
4884 | } | |
a1ea730d | 4885 | return &PL_perlio[1]; |
9e353e3b NIS |
4886 | } |
4887 | ||
9e353e3b | 4888 | PerlIO * |
e87a358a | 4889 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4890 | { |
97aff369 | 4891 | dVAR; |
a1ea730d | 4892 | if (!PL_perlio) { |
14a5cf38 JH |
4893 | PerlIO_stdstreams(aTHX); |
4894 | } | |
a1ea730d | 4895 | return &PL_perlio[2]; |
9e353e3b NIS |
4896 | } |
4897 | ||
9e353e3b | 4898 | PerlIO * |
e87a358a | 4899 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4900 | { |
97aff369 | 4901 | dVAR; |
a1ea730d | 4902 | if (!PL_perlio) { |
14a5cf38 JH |
4903 | PerlIO_stdstreams(aTHX); |
4904 | } | |
a1ea730d | 4905 | return &PL_perlio[3]; |
9e353e3b NIS |
4906 | } |
4907 | ||
4908 | /*--------------------------------------------------------------------------------------*/ | |
4909 | ||
9e353e3b NIS |
4910 | char * |
4911 | PerlIO_getname(PerlIO *f, char *buf) | |
4912 | { | |
14a5cf38 | 4913 | dTHX; |
a15cef0c | 4914 | #ifdef VMS |
73d840c0 | 4915 | char *name = NULL; |
7659f319 | 4916 | bool exported = FALSE; |
14a5cf38 | 4917 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4918 | if (!stdio) { |
4919 | stdio = PerlIO_exportFILE(f,0); | |
4920 | exported = TRUE; | |
4921 | } | |
4922 | if (stdio) { | |
14a5cf38 | 4923 | name = fgetname(stdio, buf); |
7659f319 CB |
4924 | if (exported) PerlIO_releaseFILE(f,stdio); |
4925 | } | |
73d840c0 | 4926 | return name; |
a15cef0c | 4927 | #else |
8772537c AL |
4928 | PERL_UNUSED_ARG(f); |
4929 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 4930 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 4931 | return NULL; |
a15cef0c | 4932 | #endif |
9e353e3b NIS |
4933 | } |
4934 | ||
4935 | ||
4936 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4937 | /* |
4938 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4939 | * terms of above |
14a5cf38 | 4940 | */ |
9e353e3b | 4941 | |
e87a358a NIS |
4942 | #undef PerlIO_fdopen |
4943 | PerlIO * | |
4944 | PerlIO_fdopen(int fd, const char *mode) | |
4945 | { | |
4946 | dTHX; | |
bd61b366 | 4947 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4948 | } |
4949 | ||
4950 | #undef PerlIO_open | |
4951 | PerlIO * | |
4952 | PerlIO_open(const char *path, const char *mode) | |
4953 | { | |
4954 | dTHX; | |
42d9b98d | 4955 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4956 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4957 | } |
4958 | ||
4959 | #undef Perlio_reopen | |
4960 | PerlIO * | |
4961 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4962 | { | |
4963 | dTHX; | |
42d9b98d | 4964 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4965 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4966 | } |
4967 | ||
9e353e3b | 4968 | #undef PerlIO_getc |
6f9d8c32 | 4969 | int |
9e353e3b | 4970 | PerlIO_getc(PerlIO *f) |
760ac839 | 4971 | { |
e87a358a | 4972 | dTHX; |
14a5cf38 | 4973 | STDCHAR buf[1]; |
de009b76 | 4974 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4975 | return (unsigned char) buf[0]; |
4976 | } | |
4977 | return EOF; | |
313ca112 NIS |
4978 | } |
4979 | ||
4980 | #undef PerlIO_ungetc | |
4981 | int | |
4982 | PerlIO_ungetc(PerlIO *f, int ch) | |
4983 | { | |
e87a358a | 4984 | dTHX; |
14a5cf38 JH |
4985 | if (ch != EOF) { |
4986 | STDCHAR buf = ch; | |
4987 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4988 | return ch; | |
4989 | } | |
4990 | return EOF; | |
760ac839 LW |
4991 | } |
4992 | ||
9e353e3b NIS |
4993 | #undef PerlIO_putc |
4994 | int | |
4995 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4996 | { |
e87a358a | 4997 | dTHX; |
14a5cf38 JH |
4998 | STDCHAR buf = ch; |
4999 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
5000 | } |
5001 | ||
9e353e3b | 5002 | #undef PerlIO_puts |
760ac839 | 5003 | int |
9e353e3b | 5004 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 5005 | { |
e87a358a | 5006 | dTHX; |
dcda55fc | 5007 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5008 | } |
5009 | ||
5010 | #undef PerlIO_rewind | |
5011 | void | |
c78749f2 | 5012 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5013 | { |
e87a358a | 5014 | dTHX; |
14a5cf38 JH |
5015 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5016 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5017 | } |
5018 | ||
5019 | #undef PerlIO_vprintf | |
5020 | int | |
5021 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5022 | { | |
14a5cf38 | 5023 | dTHX; |
396482e1 | 5024 | SV * const sv = newSVpvs(""); |
b83604b4 | 5025 | const char *s; |
14a5cf38 JH |
5026 | STRLEN len; |
5027 | SSize_t wrote; | |
2cc61e15 | 5028 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5029 | va_list apc; |
5030 | Perl_va_copy(ap, apc); | |
5031 | sv_vcatpvf(sv, fmt, &apc); | |
2cc61e15 | 5032 | #else |
14a5cf38 | 5033 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 | 5034 | #endif |
b83604b4 | 5035 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5036 | wrote = PerlIO_write(f, s, len); |
5037 | SvREFCNT_dec(sv); | |
5038 | return wrote; | |
760ac839 LW |
5039 | } |
5040 | ||
5041 | #undef PerlIO_printf | |
6f9d8c32 | 5042 | int |
14a5cf38 | 5043 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5044 | { |
14a5cf38 JH |
5045 | va_list ap; |
5046 | int result; | |
5047 | va_start(ap, fmt); | |
5048 | result = PerlIO_vprintf(f, fmt, ap); | |
5049 | va_end(ap); | |
5050 | return result; | |
760ac839 LW |
5051 | } |
5052 | ||
5053 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5054 | int |
14a5cf38 | 5055 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5056 | { |
e87a358a | 5057 | dTHX; |
14a5cf38 JH |
5058 | va_list ap; |
5059 | int result; | |
5060 | va_start(ap, fmt); | |
5061 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5062 | va_end(ap); | |
5063 | return result; | |
760ac839 LW |
5064 | } |
5065 | ||
5066 | #undef PerlIO_tmpfile | |
5067 | PerlIO * | |
c78749f2 | 5068 | PerlIO_tmpfile(void) |
760ac839 | 5069 | { |
2941a2e1 JH |
5070 | dTHX; |
5071 | PerlIO *f = NULL; | |
2941a2e1 | 5072 | #ifdef WIN32 |
de009b76 | 5073 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5074 | if (fd >= 0) |
5075 | f = PerlIO_fdopen(fd, "w+b"); | |
5076 | #else /* WIN32 */ | |
460c8493 | 5077 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
396482e1 | 5078 | SV * const sv = newSVpvs("/tmp/PerlIO_XXXXXX"); |
2941a2e1 JH |
5079 | /* |
5080 | * I have no idea how portable mkstemp() is ... NI-S | |
5081 | */ | |
de009b76 | 5082 | const int fd = mkstemp(SvPVX(sv)); |
2941a2e1 JH |
5083 | if (fd >= 0) { |
5084 | f = PerlIO_fdopen(fd, "w+"); | |
5085 | if (f) | |
5086 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
b15aece3 | 5087 | PerlLIO_unlink(SvPVX_const(sv)); |
2941a2e1 JH |
5088 | SvREFCNT_dec(sv); |
5089 | } | |
5090 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ | |
c4420975 | 5091 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5092 | |
085e731f CB |
5093 | if (stdio) |
5094 | f = PerlIO_fdopen(fileno(stdio), "w+"); | |
5095 | ||
2941a2e1 JH |
5096 | # endif /* else HAS_MKSTEMP */ |
5097 | #endif /* else WIN32 */ | |
5098 | return f; | |
760ac839 LW |
5099 | } |
5100 | ||
6f9d8c32 NIS |
5101 | #undef HAS_FSETPOS |
5102 | #undef HAS_FGETPOS | |
5103 | ||
22569500 NIS |
5104 | #endif /* USE_SFIO */ |
5105 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5106 | |
9e353e3b | 5107 | /*======================================================================================*/ |
14a5cf38 | 5108 | /* |
71200d45 NIS |
5109 | * Now some functions in terms of above which may be needed even if we are |
5110 | * not in true PerlIO mode | |
9e353e3b | 5111 | */ |
188f0c84 YO |
5112 | const char * |
5113 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5114 | { | |
5115 | dVAR; | |
5116 | const char *type = NULL; | |
5117 | /* | |
5118 | * Need to supply default layer info from open.pm | |
5119 | */ | |
5120 | if (PL_curcop && PL_curcop->cop_hints & HINT_LEXICAL_IO) { | |
5121 | SV * const layers | |
5122 | = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, 0, | |
5123 | "open", 4, 0, 0); | |
5124 | assert(layers); | |
5125 | if (SvOK(layers)) { | |
5126 | STRLEN len; | |
5127 | type = SvPV_const(layers, len); | |
5128 | if (type && mode && mode[0] != 'r') { | |
5129 | /* | |
5130 | * Skip to write part, which is separated by a '\0' | |
5131 | */ | |
5132 | STRLEN read_len = strlen(type); | |
5133 | if (read_len < len) { | |
5134 | type += read_len + 1; | |
5135 | } | |
5136 | } | |
5137 | } | |
5138 | } | |
5139 | return type; | |
5140 | } | |
5141 | ||
9e353e3b | 5142 | |
760ac839 LW |
5143 | #ifndef HAS_FSETPOS |
5144 | #undef PerlIO_setpos | |
5145 | int | |
766a733e | 5146 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5147 | { |
14a5cf38 JH |
5148 | dTHX; |
5149 | if (SvOK(pos)) { | |
5150 | STRLEN len; | |
c4420975 | 5151 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5152 | if (f && len == sizeof(Off_t)) |
5153 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5154 | } | |
93189314 | 5155 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5156 | return -1; |
760ac839 | 5157 | } |
c411622e | 5158 | #else |
c411622e | 5159 | #undef PerlIO_setpos |
5160 | int | |
766a733e | 5161 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5162 | { |
14a5cf38 JH |
5163 | dTHX; |
5164 | if (SvOK(pos)) { | |
5165 | STRLEN len; | |
c4420975 | 5166 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5167 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5168 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5169 | return fsetpos64(f, fpos); |
d9b3e12d | 5170 | #else |
14a5cf38 | 5171 | return fsetpos(f, fpos); |
d9b3e12d | 5172 | #endif |
14a5cf38 | 5173 | } |
766a733e | 5174 | } |
93189314 | 5175 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5176 | return -1; |
c411622e | 5177 | } |
5178 | #endif | |
760ac839 LW |
5179 | |
5180 | #ifndef HAS_FGETPOS | |
5181 | #undef PerlIO_getpos | |
5182 | int | |
766a733e | 5183 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5184 | { |
14a5cf38 JH |
5185 | dTHX; |
5186 | Off_t posn = PerlIO_tell(f); | |
5187 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5188 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5189 | } |
c411622e | 5190 | #else |
c411622e | 5191 | #undef PerlIO_getpos |
5192 | int | |
766a733e | 5193 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5194 | { |
14a5cf38 JH |
5195 | dTHX; |
5196 | Fpos_t fpos; | |
5197 | int code; | |
2d4389e4 | 5198 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5199 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5200 | #else |
14a5cf38 | 5201 | code = fgetpos(f, &fpos); |
d9b3e12d | 5202 | #endif |
14a5cf38 JH |
5203 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5204 | return code; | |
c411622e | 5205 | } |
5206 | #endif | |
760ac839 LW |
5207 | |
5208 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5209 | ||
5210 | int | |
c78749f2 | 5211 | vprintf(char *pat, char *args) |
662a7e3f CS |
5212 | { |
5213 | _doprnt(pat, args, stdout); | |
22569500 | 5214 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5215 | * value */ |
662a7e3f CS |
5216 | } |
5217 | ||
5218 | int | |
c78749f2 | 5219 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5220 | { |
5221 | _doprnt(pat, args, fd); | |
22569500 | 5222 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5223 | * value */ |
760ac839 LW |
5224 | } |
5225 | ||
5226 | #endif | |
5227 | ||
5228 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5229 | int |
8ac85365 | 5230 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5231 | { |
8ff9a42b | 5232 | dTHX; |
d9fad198 | 5233 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5234 | PERL_UNUSED_CONTEXT; |
5235 | ||
1208b3dd JH |
5236 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5237 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5238 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5239 | } |
1208b3dd | 5240 | #endif |
14a5cf38 | 5241 | return val; |
760ac839 LW |
5242 | } |
5243 | #endif | |
5244 | ||
5245 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5246 | int |
14a5cf38 | 5247 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5248 | { |
14a5cf38 JH |
5249 | va_list ap; |
5250 | int result; | |
5251 | va_start(ap, fmt); | |
5252 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5253 | va_end(ap); | |
5254 | return result; | |
760ac839 LW |
5255 | } |
5256 | #endif | |
9cfa90c0 NC |
5257 | |
5258 | /* | |
5259 | * Local variables: | |
5260 | * c-indentation-style: bsd | |
5261 | * c-basic-offset: 4 | |
5262 | * indent-tabs-mode: t | |
5263 | * End: | |
5264 | * | |
37442d52 RGS |
5265 | * ex: set ts=8 sts=4 sw=4 noet: |
5266 | */ |