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 JH |
1433 | */ |
1434 | if (SvTYPE(sv) < SVt_PVAV) | |
6a245ed1 | 1435 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
14a5cf38 JH |
1436 | |
1437 | /* | |
71200d45 | 1438 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1439 | */ |
1440 | switch (SvTYPE(sv)) { | |
1441 | case SVt_PVAV: | |
6a245ed1 | 1442 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1443 | case SVt_PVHV: |
6a245ed1 | 1444 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1445 | case SVt_PVCV: |
6a245ed1 | 1446 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1447 | case SVt_PVGV: |
6a245ed1 | 1448 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 AL |
1449 | default: |
1450 | return NULL; | |
14a5cf38 | 1451 | } |
2edd7e44 NIS |
1452 | } |
1453 | ||
fcf2db38 | 1454 | PerlIO_list_t * |
14a5cf38 JH |
1455 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1456 | const char *mode, int narg, SV **args) | |
1457 | { | |
97aff369 | 1458 | dVAR; |
14a5cf38 JH |
1459 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1460 | int incdef = 1; | |
a1ea730d | 1461 | if (!PL_perlio) |
14a5cf38 JH |
1462 | PerlIO_stdstreams(aTHX); |
1463 | if (narg) { | |
dcda55fc | 1464 | SV * const arg = *args; |
14a5cf38 | 1465 | /* |
71200d45 NIS |
1466 | * If it is a reference but not an object see if we have a handler |
1467 | * for it | |
14a5cf38 JH |
1468 | */ |
1469 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1470 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1471 | if (handler) { |
3a1ee7e8 NIS |
1472 | def = PerlIO_list_alloc(aTHX); |
1473 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1474 | incdef = 0; |
1475 | } | |
1476 | /* | |
e934609f | 1477 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1478 | * something sensible else we will just stringfy and open |
71200d45 | 1479 | * resulting string. |
14a5cf38 JH |
1480 | */ |
1481 | } | |
1482 | } | |
9fe371da | 1483 | if (!layers || !*layers) |
11bcd5da | 1484 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1485 | if (layers && *layers) { |
1486 | PerlIO_list_t *av; | |
1487 | if (incdef) { | |
de009b76 | 1488 | IV i; |
3a1ee7e8 | 1489 | av = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1490 | for (i = 0; i < def->cur; i++) { |
3a1ee7e8 | 1491 | PerlIO_list_push(aTHX_ av, def->array[i].funcs, |
14a5cf38 JH |
1492 | def->array[i].arg); |
1493 | } | |
1494 | } | |
1495 | else { | |
1496 | av = def; | |
1497 | } | |
0cff2cf3 NIS |
1498 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1499 | return av; | |
1500 | } | |
1501 | else { | |
1502 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1503 | return NULL; |
0cff2cf3 | 1504 | } |
14a5cf38 JH |
1505 | } |
1506 | else { | |
1507 | if (incdef) | |
1508 | def->refcnt++; | |
1509 | return def; | |
1510 | } | |
ee518936 NIS |
1511 | } |
1512 | ||
1513 | PerlIO * | |
14a5cf38 JH |
1514 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1515 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1516 | { | |
97aff369 | 1517 | dVAR; |
14a5cf38 JH |
1518 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1519 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1520 | if (!layers || !*layers) |
11bcd5da | 1521 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 JH |
1522 | if (layers && *layers) |
1523 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1524 | } | |
1525 | } | |
1526 | else { | |
de009b76 | 1527 | PerlIO_list_t *layera; |
14a5cf38 JH |
1528 | IV n; |
1529 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1530 | if (PerlIOValid(f)) { |
14a5cf38 | 1531 | /* |
71200d45 NIS |
1532 | * This is "reopen" - it is not tested as perl does not use it |
1533 | * yet | |
14a5cf38 JH |
1534 | */ |
1535 | PerlIOl *l = *f; | |
3a1ee7e8 | 1536 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1537 | while (l) { |
46c461b5 | 1538 | SV * const arg = (l->tab->Getarg) |
04892f78 NIS |
1539 | ? (*l->tab->Getarg) (aTHX_ &l, NULL, 0) |
1540 | : &PL_sv_undef; | |
3a1ee7e8 | 1541 | PerlIO_list_push(aTHX_ layera, l->tab, arg); |
14a5cf38 JH |
1542 | l = *PerlIONext(&l); |
1543 | } | |
1544 | } | |
1545 | else { | |
1546 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1547 | if (!layera) { |
1548 | return NULL; | |
1549 | } | |
14a5cf38 JH |
1550 | } |
1551 | /* | |
71200d45 | 1552 | * Start at "top" of layer stack |
14a5cf38 JH |
1553 | */ |
1554 | n = layera->cur - 1; | |
1555 | while (n >= 0) { | |
46c461b5 | 1556 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1557 | if (t && t->Open) { |
1558 | tab = t; | |
1559 | break; | |
1560 | } | |
1561 | n--; | |
1562 | } | |
1563 | if (tab) { | |
1564 | /* | |
71200d45 | 1565 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1566 | */ |
7cf31beb | 1567 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1568 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1569 | } |
14a5cf38 | 1570 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1571 | tab->name, layers ? layers : "(Null)", mode, fd, |
1572 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1573 | if (tab->Open) |
1574 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1575 | f, narg, args); | |
1576 | else { | |
1577 | SETERRNO(EINVAL, LIB_INVARG); | |
1578 | f = NULL; | |
1579 | } | |
14a5cf38 JH |
1580 | if (f) { |
1581 | if (n + 1 < layera->cur) { | |
1582 | /* | |
1583 | * More layers above the one that we used to open - | |
71200d45 | 1584 | * apply them now |
14a5cf38 | 1585 | */ |
d9dac8cd NIS |
1586 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1587 | /* If pushing layers fails close the file */ | |
1588 | PerlIO_close(f); | |
14a5cf38 JH |
1589 | f = NULL; |
1590 | } | |
1591 | } | |
1592 | } | |
1593 | } | |
3a1ee7e8 | 1594 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1595 | } |
1596 | return f; | |
ee518936 | 1597 | } |
b931b1d9 NIS |
1598 | |
1599 | ||
9e353e3b | 1600 | SSize_t |
e87a358a | 1601 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1602 | { |
b32dd47e | 1603 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1604 | } |
1605 | ||
313ca112 | 1606 | SSize_t |
e87a358a | 1607 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1608 | { |
b32dd47e | 1609 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1610 | } |
1611 | ||
9e353e3b | 1612 | SSize_t |
e87a358a | 1613 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1614 | { |
b32dd47e | 1615 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1616 | } |
1617 | ||
6f9d8c32 | 1618 | int |
e87a358a | 1619 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1620 | { |
b32dd47e | 1621 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1622 | } |
1623 | ||
9e353e3b | 1624 | Off_t |
e87a358a | 1625 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1626 | { |
b32dd47e | 1627 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1628 | } |
1629 | ||
6f9d8c32 | 1630 | int |
e87a358a | 1631 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1632 | { |
97aff369 | 1633 | dVAR; |
14a5cf38 JH |
1634 | if (f) { |
1635 | if (*f) { | |
de009b76 | 1636 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1637 | |
1638 | if (tab && tab->Flush) | |
f62ce20a | 1639 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1640 | else |
1641 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1642 | } |
1643 | else { | |
fe5a182c | 1644 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1645 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1646 | return -1; |
1647 | } | |
1648 | } | |
1649 | else { | |
1650 | /* | |
1651 | * Is it good API design to do flush-all on NULL, a potentially | |
1652 | * errorneous input? Maybe some magical value (PerlIO* | |
1653 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1654 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1655 | * decisions? --jhi |
14a5cf38 | 1656 | */ |
a1ea730d | 1657 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1658 | int code = 0; |
1659 | while ((f = *table)) { | |
1660 | int i; | |
1661 | table = (PerlIO **) (f++); | |
1662 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1663 | if (*f && PerlIO_flush(f) != 0) | |
1664 | code = -1; | |
1665 | f++; | |
1666 | } | |
1667 | } | |
1668 | return code; | |
1669 | } | |
760ac839 LW |
1670 | } |
1671 | ||
a9c883f6 | 1672 | void |
f62ce20a | 1673 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1674 | { |
97aff369 | 1675 | dVAR; |
a1ea730d | 1676 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1677 | PerlIO *f; |
1678 | while ((f = *table)) { | |
1679 | int i; | |
1680 | table = (PerlIO **) (f++); | |
1681 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1682 | if (*f | |
1683 | && (PerlIOBase(f)-> | |
1684 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1685 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1686 | PerlIO_flush(f); | |
1687 | f++; | |
1688 | } | |
a9c883f6 | 1689 | } |
a9c883f6 NIS |
1690 | } |
1691 | ||
06da4f11 | 1692 | int |
e87a358a | 1693 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1694 | { |
b32dd47e | 1695 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1696 | } |
1697 | ||
f3862f8b NIS |
1698 | int |
1699 | PerlIO_isutf8(PerlIO *f) | |
1700 | { | |
1b7a0411 JH |
1701 | if (PerlIOValid(f)) |
1702 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1703 | else | |
1704 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1705 | |
1b7a0411 | 1706 | return -1; |
f3862f8b NIS |
1707 | } |
1708 | ||
6f9d8c32 | 1709 | int |
e87a358a | 1710 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1711 | { |
b32dd47e | 1712 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1713 | } |
1714 | ||
9e353e3b | 1715 | int |
e87a358a | 1716 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1717 | { |
b32dd47e | 1718 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1719 | } |
1720 | ||
9e353e3b | 1721 | void |
e87a358a | 1722 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1723 | { |
b32dd47e | 1724 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1725 | } |
1726 | ||
9e353e3b | 1727 | void |
e87a358a | 1728 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1729 | { |
b32dd47e | 1730 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1731 | } |
1732 | ||
9e353e3b NIS |
1733 | int |
1734 | PerlIO_has_base(PerlIO *f) | |
1735 | { | |
1b7a0411 | 1736 | if (PerlIOValid(f)) { |
46c461b5 | 1737 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1738 | |
1739 | if (tab) | |
1740 | return (tab->Get_base != NULL); | |
1741 | SETERRNO(EINVAL, LIB_INVARG); | |
1742 | } | |
1743 | else | |
1744 | SETERRNO(EBADF, SS_IVCHAN); | |
1745 | ||
1746 | return 0; | |
760ac839 LW |
1747 | } |
1748 | ||
9e353e3b NIS |
1749 | int |
1750 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1751 | { |
04892f78 | 1752 | if (PerlIOValid(f) && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) { |
46c461b5 | 1753 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1754 | |
1755 | if (tab) | |
1756 | return (tab->Set_ptrcnt != NULL); | |
1757 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1758 | } |
1b7a0411 JH |
1759 | else |
1760 | SETERRNO(EBADF, SS_IVCHAN); | |
1761 | ||
14a5cf38 | 1762 | return 0; |
9e353e3b NIS |
1763 | } |
1764 | ||
9e353e3b NIS |
1765 | int |
1766 | PerlIO_has_cntptr(PerlIO *f) | |
1767 | { | |
04892f78 | 1768 | if (PerlIOValid(f)) { |
46c461b5 | 1769 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1770 | |
1771 | if (tab) | |
1772 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1773 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1774 | } |
1b7a0411 JH |
1775 | else |
1776 | SETERRNO(EBADF, SS_IVCHAN); | |
1777 | ||
14a5cf38 | 1778 | return 0; |
9e353e3b NIS |
1779 | } |
1780 | ||
9e353e3b NIS |
1781 | int |
1782 | PerlIO_canset_cnt(PerlIO *f) | |
1783 | { | |
04892f78 | 1784 | if (PerlIOValid(f)) { |
46c461b5 | 1785 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1786 | |
1787 | if (tab) | |
1788 | return (tab->Set_ptrcnt != NULL); | |
1789 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1790 | } |
1b7a0411 JH |
1791 | else |
1792 | SETERRNO(EBADF, SS_IVCHAN); | |
1793 | ||
14a5cf38 | 1794 | return 0; |
760ac839 LW |
1795 | } |
1796 | ||
888911fc | 1797 | STDCHAR * |
e87a358a | 1798 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1799 | { |
b32dd47e | 1800 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1801 | } |
1802 | ||
9e353e3b | 1803 | int |
e87a358a | 1804 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1805 | { |
b32dd47e | 1806 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1807 | } |
1808 | ||
9e353e3b | 1809 | STDCHAR * |
e87a358a | 1810 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1811 | { |
b32dd47e | 1812 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1813 | } |
1814 | ||
05d1247b | 1815 | int |
e87a358a | 1816 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1817 | { |
b32dd47e | 1818 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1819 | } |
1820 | ||
9e353e3b | 1821 | void |
e87a358a | 1822 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1823 | { |
b32dd47e | 1824 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1825 | } |
1826 | ||
9e353e3b | 1827 | void |
e87a358a | 1828 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1829 | { |
b32dd47e | 1830 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1831 | } |
1832 | ||
4ec2216f | 1833 | |
9e353e3b | 1834 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1835 | /* |
71200d45 | 1836 | * utf8 and raw dummy layers |
14a5cf38 | 1837 | */ |
dfebf958 | 1838 | |
26fb694e | 1839 | IV |
2dc2558e | 1840 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1841 | { |
96a5add6 | 1842 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1843 | PERL_UNUSED_ARG(mode); |
1844 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1845 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1846 | if (tab->kind & PERLIO_K_UTF8) |
1847 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1848 | else | |
1849 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1850 | return 0; | |
1851 | } | |
1852 | return -1; | |
26fb694e NIS |
1853 | } |
1854 | ||
27da23d5 | 1855 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1856 | sizeof(PerlIO_funcs), |
14a5cf38 | 1857 | "utf8", |
2dc2558e | 1858 | 0, |
6874a2de | 1859 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1860 | PerlIOUtf8_pushed, |
1861 | NULL, | |
1862 | NULL, | |
1863 | NULL, | |
1864 | NULL, | |
1865 | NULL, | |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
1869 | NULL, | |
1870 | NULL, | |
de009b76 AL |
1871 | NULL, |
1872 | NULL, | |
22569500 NIS |
1873 | NULL, /* flush */ |
1874 | NULL, /* fill */ | |
14a5cf38 JH |
1875 | NULL, |
1876 | NULL, | |
1877 | NULL, | |
1878 | NULL, | |
22569500 NIS |
1879 | NULL, /* get_base */ |
1880 | NULL, /* get_bufsiz */ | |
1881 | NULL, /* get_ptr */ | |
1882 | NULL, /* get_cnt */ | |
1883 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1884 | }; |
1885 | ||
27da23d5 | 1886 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1887 | sizeof(PerlIO_funcs), |
14a5cf38 | 1888 | "bytes", |
2dc2558e | 1889 | 0, |
14a5cf38 JH |
1890 | PERLIO_K_DUMMY, |
1891 | PerlIOUtf8_pushed, | |
1892 | NULL, | |
1893 | NULL, | |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
1901 | NULL, | |
de009b76 AL |
1902 | NULL, |
1903 | NULL, | |
22569500 NIS |
1904 | NULL, /* flush */ |
1905 | NULL, /* fill */ | |
14a5cf38 JH |
1906 | NULL, |
1907 | NULL, | |
1908 | NULL, | |
1909 | NULL, | |
22569500 NIS |
1910 | NULL, /* get_base */ |
1911 | NULL, /* get_bufsiz */ | |
1912 | NULL, /* get_ptr */ | |
1913 | NULL, /* get_cnt */ | |
1914 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1915 | }; |
1916 | ||
1917 | PerlIO * | |
14a5cf38 JH |
1918 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1919 | IV n, const char *mode, int fd, int imode, int perm, | |
1920 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1921 | { |
8772537c AL |
1922 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1923 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1924 | if (tab && tab->Open) |
1925 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1926 | old, narg, args); | |
1927 | SETERRNO(EINVAL, LIB_INVARG); | |
1928 | return NULL; | |
dfebf958 NIS |
1929 | } |
1930 | ||
27da23d5 | 1931 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1932 | sizeof(PerlIO_funcs), |
14a5cf38 | 1933 | "raw", |
2dc2558e | 1934 | 0, |
14a5cf38 JH |
1935 | PERLIO_K_DUMMY, |
1936 | PerlIORaw_pushed, | |
1937 | PerlIOBase_popped, | |
1938 | PerlIORaw_open, | |
1939 | NULL, | |
1940 | NULL, | |
1941 | NULL, | |
1942 | NULL, | |
1943 | NULL, | |
1944 | NULL, | |
1945 | NULL, | |
1946 | NULL, | |
de009b76 AL |
1947 | NULL, |
1948 | NULL, | |
22569500 NIS |
1949 | NULL, /* flush */ |
1950 | NULL, /* fill */ | |
14a5cf38 JH |
1951 | NULL, |
1952 | NULL, | |
1953 | NULL, | |
1954 | NULL, | |
22569500 NIS |
1955 | NULL, /* get_base */ |
1956 | NULL, /* get_bufsiz */ | |
1957 | NULL, /* get_ptr */ | |
1958 | NULL, /* get_cnt */ | |
1959 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1960 | }; |
1961 | /*--------------------------------------------------------------------------------------*/ | |
1962 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1963 | /* |
71200d45 | 1964 | * "Methods" of the "base class" |
14a5cf38 | 1965 | */ |
9e353e3b NIS |
1966 | |
1967 | IV | |
f62ce20a | 1968 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1969 | { |
04892f78 | 1970 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1971 | } |
1972 | ||
f5b9d040 | 1973 | char * |
81428673 | 1974 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1975 | { |
1976 | char *s = buf; | |
81428673 | 1977 | if (PerlIOValid(f)) { |
de009b76 | 1978 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1979 | if (flags & PERLIO_F_APPEND) { |
1980 | *s++ = 'a'; | |
1981 | if (flags & PERLIO_F_CANREAD) { | |
1982 | *s++ = '+'; | |
1983 | } | |
14a5cf38 | 1984 | } |
81428673 NIS |
1985 | else if (flags & PERLIO_F_CANREAD) { |
1986 | *s++ = 'r'; | |
1987 | if (flags & PERLIO_F_CANWRITE) | |
1988 | *s++ = '+'; | |
1989 | } | |
1990 | else if (flags & PERLIO_F_CANWRITE) { | |
1991 | *s++ = 'w'; | |
1992 | if (flags & PERLIO_F_CANREAD) { | |
1993 | *s++ = '+'; | |
1994 | } | |
14a5cf38 | 1995 | } |
35990314 | 1996 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1997 | if (!(flags & PERLIO_F_CRLF)) |
1998 | *s++ = 'b'; | |
5f1a76d0 | 1999 | #endif |
81428673 | 2000 | } |
14a5cf38 JH |
2001 | *s = '\0'; |
2002 | return buf; | |
f5b9d040 NIS |
2003 | } |
2004 | ||
81428673 | 2005 | |
76ced9ad | 2006 | IV |
2dc2558e | 2007 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2008 | { |
de009b76 | 2009 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2010 | PERL_UNUSED_CONTEXT; |
8772537c | 2011 | PERL_UNUSED_ARG(arg); |
de009b76 | 2012 | |
14a5cf38 JH |
2013 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2014 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2015 | if (tab->Set_ptrcnt != NULL) | |
2016 | l->flags |= PERLIO_F_FASTGETS; | |
2017 | if (mode) { | |
3b6c1aba | 2018 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2019 | mode++; |
2020 | switch (*mode++) { | |
2021 | case 'r': | |
2022 | l->flags |= PERLIO_F_CANREAD; | |
2023 | break; | |
2024 | case 'a': | |
2025 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2026 | break; | |
2027 | case 'w': | |
2028 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2029 | break; | |
2030 | default: | |
93189314 | 2031 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2032 | return -1; |
2033 | } | |
2034 | while (*mode) { | |
2035 | switch (*mode++) { | |
2036 | case '+': | |
2037 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2038 | break; | |
2039 | case 'b': | |
2040 | l->flags &= ~PERLIO_F_CRLF; | |
2041 | break; | |
2042 | case 't': | |
2043 | l->flags |= PERLIO_F_CRLF; | |
2044 | break; | |
2045 | default: | |
93189314 | 2046 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2047 | return -1; |
2048 | } | |
2049 | } | |
2050 | } | |
2051 | else { | |
2052 | if (l->next) { | |
2053 | l->flags |= l->next->flags & | |
2054 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2055 | PERLIO_F_APPEND); | |
2056 | } | |
2057 | } | |
5e2ab84b | 2058 | #if 0 |
14a5cf38 JH |
2059 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
2060 | f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", | |
2061 | l->flags, PerlIO_modestr(f, temp)); | |
5e2ab84b | 2062 | #endif |
14a5cf38 | 2063 | return 0; |
76ced9ad NIS |
2064 | } |
2065 | ||
2066 | IV | |
f62ce20a | 2067 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2068 | { |
96a5add6 | 2069 | PERL_UNUSED_CONTEXT; |
8772537c | 2070 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2071 | return 0; |
760ac839 LW |
2072 | } |
2073 | ||
9e353e3b | 2074 | SSize_t |
f62ce20a | 2075 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2076 | { |
14a5cf38 | 2077 | /* |
71200d45 | 2078 | * Save the position as current head considers it |
14a5cf38 | 2079 | */ |
de009b76 | 2080 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2081 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2082 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2083 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2084 | } |
2085 | ||
f6c77cf1 | 2086 | SSize_t |
f62ce20a | 2087 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2088 | { |
14a5cf38 JH |
2089 | STDCHAR *buf = (STDCHAR *) vbuf; |
2090 | if (f) { | |
263df5f1 JH |
2091 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2092 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2093 | SETERRNO(EBADF, SS_IVCHAN); | |
2094 | return 0; | |
2095 | } | |
14a5cf38 | 2096 | while (count > 0) { |
93c2c2ec IZ |
2097 | get_cnt: |
2098 | { | |
14a5cf38 JH |
2099 | SSize_t avail = PerlIO_get_cnt(f); |
2100 | SSize_t take = 0; | |
2101 | if (avail > 0) | |
bb7a0f54 | 2102 | take = ((SSize_t)count < avail) ? (SSize_t)count : avail; |
14a5cf38 JH |
2103 | if (take > 0) { |
2104 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2105 | Copy(ptr, buf, take, STDCHAR); | |
2106 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2107 | count -= take; | |
2108 | buf += take; | |
93c2c2ec IZ |
2109 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2110 | goto get_cnt; | |
14a5cf38 JH |
2111 | } |
2112 | if (count > 0 && avail <= 0) { | |
2113 | if (PerlIO_fill(f) != 0) | |
2114 | break; | |
2115 | } | |
93c2c2ec | 2116 | } |
14a5cf38 JH |
2117 | } |
2118 | return (buf - (STDCHAR *) vbuf); | |
2119 | } | |
f6c77cf1 | 2120 | return 0; |
f6c77cf1 NIS |
2121 | } |
2122 | ||
9e353e3b | 2123 | IV |
f62ce20a | 2124 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2125 | { |
96a5add6 | 2126 | PERL_UNUSED_CONTEXT; |
8772537c | 2127 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2128 | return 0; |
9e353e3b NIS |
2129 | } |
2130 | ||
2131 | IV | |
f62ce20a | 2132 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2133 | { |
96a5add6 | 2134 | PERL_UNUSED_CONTEXT; |
8772537c | 2135 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2136 | return -1; |
06da4f11 NIS |
2137 | } |
2138 | ||
2139 | IV | |
f62ce20a | 2140 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2141 | { |
37725cdc NIS |
2142 | IV code = -1; |
2143 | if (PerlIOValid(f)) { | |
2144 | PerlIO *n = PerlIONext(f); | |
2145 | code = PerlIO_flush(f); | |
2146 | PerlIOBase(f)->flags &= | |
2147 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2148 | while (PerlIOValid(n)) { | |
de009b76 | 2149 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2150 | if (tab && tab->Close) { |
2151 | if ((*tab->Close)(aTHX_ n) != 0) | |
2152 | code = -1; | |
2153 | break; | |
2154 | } | |
2155 | else { | |
2156 | PerlIOBase(n)->flags &= | |
2157 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2158 | } | |
2159 | n = PerlIONext(n); | |
2160 | } | |
2161 | } | |
2162 | else { | |
2163 | SETERRNO(EBADF, SS_IVCHAN); | |
2164 | } | |
14a5cf38 | 2165 | return code; |
9e353e3b NIS |
2166 | } |
2167 | ||
2168 | IV | |
f62ce20a | 2169 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2170 | { |
96a5add6 | 2171 | PERL_UNUSED_CONTEXT; |
04892f78 | 2172 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2173 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2174 | } | |
2175 | return 1; | |
9e353e3b NIS |
2176 | } |
2177 | ||
2178 | IV | |
f62ce20a | 2179 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2180 | { |
96a5add6 | 2181 | PERL_UNUSED_CONTEXT; |
04892f78 | 2182 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2183 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2184 | } | |
2185 | return 1; | |
9e353e3b NIS |
2186 | } |
2187 | ||
2188 | void | |
f62ce20a | 2189 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2190 | { |
04892f78 | 2191 | if (PerlIOValid(f)) { |
dcda55fc | 2192 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2193 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2194 | if (PerlIOValid(n)) |
14a5cf38 JH |
2195 | PerlIO_clearerr(n); |
2196 | } | |
9e353e3b NIS |
2197 | } |
2198 | ||
2199 | void | |
f62ce20a | 2200 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2201 | { |
96a5add6 | 2202 | PERL_UNUSED_CONTEXT; |
04892f78 | 2203 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2204 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2205 | } | |
9e353e3b NIS |
2206 | } |
2207 | ||
93a8090d NIS |
2208 | SV * |
2209 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2210 | { | |
2211 | if (!arg) | |
a0714e2c | 2212 | return NULL; |
93a8090d NIS |
2213 | #ifdef sv_dup |
2214 | if (param) { | |
2215 | return sv_dup(arg, param); | |
2216 | } | |
2217 | else { | |
2218 | return newSVsv(arg); | |
2219 | } | |
2220 | #else | |
1b6737cc | 2221 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2222 | return newSVsv(arg); |
2223 | #endif | |
2224 | } | |
2225 | ||
2226 | PerlIO * | |
ecdeb87c | 2227 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2228 | { |
1b6737cc | 2229 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2230 | if (PerlIOValid(nexto)) { |
de009b76 | 2231 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2232 | if (tab && tab->Dup) |
2233 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2234 | else | |
2235 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2236 | } |
2237 | if (f) { | |
dcda55fc | 2238 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
210e727c | 2239 | SV *arg; |
93a8090d | 2240 | char buf[8]; |
fe5a182c JH |
2241 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2242 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2243 | if (self->Getarg) |
2244 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
2245 | else { | |
a0714e2c | 2246 | arg = NULL; |
93a8090d NIS |
2247 | } |
2248 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); | |
ecdeb87c | 2249 | if (arg) { |
93a8090d NIS |
2250 | SvREFCNT_dec(arg); |
2251 | } | |
2252 | } | |
2253 | return f; | |
2254 | } | |
2255 | ||
27da23d5 | 2256 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2257 | |
8b84d7dd | 2258 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 NC |
2259 | static void |
2260 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
7a89be66 | 2261 | dVAR; |
22c96fc1 | 2262 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2263 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2264 | int *new_array; |
2265 | ||
2266 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2267 | old_max, new_fd, new_max); | |
2268 | ||
2269 | if (new_fd < old_max) { | |
2270 | return; | |
2271 | } | |
2272 | ||
f4ae5be6 NC |
2273 | assert (new_max > new_fd); |
2274 | ||
10edeb5d JH |
2275 | new_array = |
2276 | (int*) PerlMemShared_realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2277 | |
2278 | if (!new_array) { | |
8b84d7dd | 2279 | #ifdef USE_ITHREADS |
6cb8cb21 | 2280 | MUTEX_UNLOCK(&PL_perlio_mutex); |
22c96fc1 NC |
2281 | #endif |
2282 | /* Can't use PerlIO to write as it allocates memory */ | |
2283 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2284 | PL_no_mem, strlen(PL_no_mem)); | |
2285 | my_exit(1); | |
2286 | } | |
2287 | ||
2288 | PL_perlio_fd_refcnt_size = new_max; | |
2289 | PL_perlio_fd_refcnt = new_array; | |
2290 | ||
95b63a38 JH |
2291 | PerlIO_debug("Zeroing %p, %d\n", |
2292 | (void*)(new_array + old_max), | |
2293 | new_max - old_max); | |
22c96fc1 NC |
2294 | |
2295 | Zero(new_array + old_max, new_max - old_max, int); | |
2296 | } | |
2297 | ||
2298 | ||
93a8090d NIS |
2299 | void |
2300 | PerlIO_init(pTHX) | |
2301 | { | |
8b84d7dd | 2302 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2303 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2304 | } |
2305 | ||
168d5872 NIS |
2306 | void |
2307 | PerlIOUnix_refcnt_inc(int fd) | |
2308 | { | |
27da23d5 | 2309 | dTHX; |
22c96fc1 | 2310 | if (fd >= 0) { |
97aff369 | 2311 | dVAR; |
22c96fc1 | 2312 | |
8b84d7dd | 2313 | #ifdef USE_ITHREADS |
6cb8cb21 | 2314 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2315 | #endif |
22c96fc1 NC |
2316 | if (fd >= PL_perlio_fd_refcnt_size) |
2317 | S_more_refcounted_fds(aTHX_ fd); | |
2318 | ||
27da23d5 | 2319 | PL_perlio_fd_refcnt[fd]++; |
8b84d7dd RGS |
2320 | if (PL_perlio_fd_refcnt[fd] <= 0) { |
2321 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2322 | fd, PL_perlio_fd_refcnt[fd]); | |
2323 | } | |
2324 | PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
2325 | fd, PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2326 | |
8b84d7dd | 2327 | #ifdef USE_ITHREADS |
6cb8cb21 | 2328 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2329 | #endif |
8b84d7dd RGS |
2330 | } else { |
2331 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2332 | } |
2333 | } | |
2334 | ||
168d5872 NIS |
2335 | int |
2336 | PerlIOUnix_refcnt_dec(int fd) | |
2337 | { | |
27da23d5 | 2338 | dTHX; |
168d5872 | 2339 | int cnt = 0; |
22c96fc1 | 2340 | if (fd >= 0) { |
97aff369 | 2341 | dVAR; |
8b84d7dd | 2342 | #ifdef USE_ITHREADS |
6cb8cb21 | 2343 | MUTEX_LOCK(&PL_perlio_mutex); |
168d5872 | 2344 | #endif |
8b84d7dd RGS |
2345 | if (fd >= PL_perlio_fd_refcnt_size) { |
2346 | Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n", | |
2347 | fd, PL_perlio_fd_refcnt_size); | |
2348 | } | |
2349 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2350 | Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n", | |
2351 | fd, PL_perlio_fd_refcnt[fd]); | |
2352 | } | |
27da23d5 | 2353 | cnt = --PL_perlio_fd_refcnt[fd]; |
8b84d7dd RGS |
2354 | PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt); |
2355 | #ifdef USE_ITHREADS | |
6cb8cb21 | 2356 | MUTEX_UNLOCK(&PL_perlio_mutex); |
168d5872 | 2357 | #endif |
8b84d7dd RGS |
2358 | } else { |
2359 | Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2360 | } |
2361 | return cnt; | |
2362 | } | |
2363 | ||
694c95cf JH |
2364 | void |
2365 | PerlIO_cleanup(pTHX) | |
2366 | { | |
97aff369 | 2367 | dVAR; |
694c95cf JH |
2368 | int i; |
2369 | #ifdef USE_ITHREADS | |
a25429c6 | 2370 | PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX); |
9f4bd222 NIS |
2371 | #else |
2372 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf | 2373 | #endif |
e47547a8 | 2374 | |
694c95cf JH |
2375 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2376 | for (i=0; i < 3; i++) | |
2377 | PerlIOUnix_refcnt_inc(i); | |
2378 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2379 | /* Restore STDIN..STDERR refcount */ | |
2380 | for (i=0; i < 3; i++) | |
2381 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2382 | |
2383 | if (PL_known_layers) { | |
2384 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2385 | PL_known_layers = NULL; | |
2386 | } | |
27da23d5 | 2387 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2388 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2389 | PL_def_layerlist = NULL; | |
2390 | } | |
6cb8cb21 RGS |
2391 | } |
2392 | ||
2393 | void PerlIO_teardown(pTHX) /* Call only from PERL_SYS_TERM(). */ | |
2394 | { | |
2395 | #ifdef DEBUGGING | |
2396 | { | |
2397 | /* By now all filehandles should have been closed, so any | |
2398 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2399 | * errors. */ | |
2400 | int i; | |
2401 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
2402 | if (PL_perlio_fd_refcnt[i]) | |
2403 | PerlIO_debug("PerlIO_cleanup: fd %d refcnt=%d\n", | |
2404 | i, PL_perlio_fd_refcnt[i]); | |
2405 | } | |
2406 | } | |
2407 | #endif | |
8b84d7dd | 2408 | #ifdef USE_ITHREADS |
6cb8cb21 | 2409 | MUTEX_LOCK(&PL_perlio_mutex); |
1cd82952 RGS |
2410 | #endif |
2411 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ | |
2412 | && PL_perlio_fd_refcnt) { | |
2413 | #ifdef PERL_TRACK_MEMPOOL | |
2414 | Malloc_t ptr = (Malloc_t)((char*)PL_perlio_fd_refcnt-sTHX); | |
2415 | struct perl_memory_debug_header *const header | |
2416 | = (struct perl_memory_debug_header *)ptr; | |
2417 | /* Only the thread that allocated us can free us. */ | |
2418 | if (header->interpreter == aTHX) | |
2419 | #endif | |
2420 | { | |
6cb8cb21 | 2421 | PerlMemShared_free(PL_perlio_fd_refcnt); /* Not Safefree() because was allocated with PerlMemShared_realloc(). */ |
1cd82952 RGS |
2422 | PL_perlio_fd_refcnt = NULL; |
2423 | PL_perlio_fd_refcnt_size = 0; | |
2424 | } | |
2425 | } | |
8b84d7dd | 2426 | #ifdef USE_ITHREADS |
6cb8cb21 | 2427 | MUTEX_UNLOCK(&PL_perlio_mutex); |
1cd82952 | 2428 | #endif |
694c95cf JH |
2429 | } |
2430 | ||
2431 | ||
2432 | ||
9e353e3b | 2433 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2434 | /* |
71200d45 | 2435 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2436 | */ |
9e353e3b | 2437 | |
14a5cf38 | 2438 | typedef struct { |
22569500 NIS |
2439 | struct _PerlIO base; /* The generic part */ |
2440 | int fd; /* UNIX like file descriptor */ | |
2441 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2442 | } PerlIOUnix; |
2443 | ||
6f9d8c32 | 2444 | int |
9e353e3b | 2445 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2446 | { |
14a5cf38 | 2447 | int oflags = -1; |
3b6c1aba | 2448 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2449 | mode++; |
2450 | switch (*mode) { | |
2451 | case 'r': | |
2452 | oflags = O_RDONLY; | |
2453 | if (*++mode == '+') { | |
2454 | oflags = O_RDWR; | |
2455 | mode++; | |
2456 | } | |
2457 | break; | |
2458 | ||
2459 | case 'w': | |
2460 | oflags = O_CREAT | O_TRUNC; | |
2461 | if (*++mode == '+') { | |
2462 | oflags |= O_RDWR; | |
2463 | mode++; | |
2464 | } | |
2465 | else | |
2466 | oflags |= O_WRONLY; | |
2467 | break; | |
2468 | ||
2469 | case 'a': | |
2470 | oflags = O_CREAT | O_APPEND; | |
2471 | if (*++mode == '+') { | |
2472 | oflags |= O_RDWR; | |
2473 | mode++; | |
2474 | } | |
2475 | else | |
2476 | oflags |= O_WRONLY; | |
2477 | break; | |
2478 | } | |
2479 | if (*mode == 'b') { | |
2480 | oflags |= O_BINARY; | |
2481 | oflags &= ~O_TEXT; | |
2482 | mode++; | |
2483 | } | |
2484 | else if (*mode == 't') { | |
2485 | oflags |= O_TEXT; | |
2486 | oflags &= ~O_BINARY; | |
2487 | mode++; | |
2488 | } | |
2489 | /* | |
71200d45 | 2490 | * Always open in binary mode |
14a5cf38 JH |
2491 | */ |
2492 | oflags |= O_BINARY; | |
2493 | if (*mode || oflags == -1) { | |
93189314 | 2494 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2495 | oflags = -1; |
2496 | } | |
2497 | return oflags; | |
9e353e3b NIS |
2498 | } |
2499 | ||
2500 | IV | |
f62ce20a | 2501 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2502 | { |
96a5add6 | 2503 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2504 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2505 | } |
2506 | ||
aa063c35 NIS |
2507 | static void |
2508 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2509 | { |
de009b76 | 2510 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2511 | #if defined(WIN32) |
aa063c35 NIS |
2512 | Stat_t st; |
2513 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2514 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2515 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2516 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2517 | } | |
aa063c35 NIS |
2518 | else { |
2519 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2520 | } | |
6caa5a9c NIS |
2521 | } |
2522 | #endif | |
aa063c35 NIS |
2523 | s->fd = fd; |
2524 | s->oflags = imode; | |
2525 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2526 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2527 | } |
2528 | ||
2529 | IV | |
2530 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2531 | { | |
2532 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2533 | if (*PerlIONext(f)) { |
4b069b44 | 2534 | /* We never call down so do any pending stuff now */ |
03c0554d | 2535 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2536 | /* |
71200d45 | 2537 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2538 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2539 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2540 | */ |
acbd16bf | 2541 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2542 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2543 | } |
2544 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2545 | |
14a5cf38 | 2546 | return code; |
4b803d04 NIS |
2547 | } |
2548 | ||
c2fcde81 JH |
2549 | IV |
2550 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2551 | { | |
de009b76 | 2552 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2553 | Off_t new_loc; |
96a5add6 | 2554 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2555 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2556 | #ifdef ESPIPE | |
2557 | SETERRNO(ESPIPE, LIB_INVARG); | |
2558 | #else | |
2559 | SETERRNO(EINVAL, LIB_INVARG); | |
2560 | #endif | |
2561 | return -1; | |
2562 | } | |
0723351e NC |
2563 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2564 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2565 | return -1; |
c2fcde81 JH |
2566 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2567 | return 0; | |
2568 | } | |
2569 | ||
9e353e3b | 2570 | PerlIO * |
14a5cf38 JH |
2571 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2572 | IV n, const char *mode, int fd, int imode, | |
2573 | int perm, PerlIO *f, int narg, SV **args) | |
2574 | { | |
d9dac8cd | 2575 | if (PerlIOValid(f)) { |
14a5cf38 | 2576 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2577 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2578 | } |
2579 | if (narg > 0) { | |
3b6c1aba | 2580 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2581 | mode++; |
2582 | else { | |
2583 | imode = PerlIOUnix_oflags(mode); | |
2584 | perm = 0666; | |
2585 | } | |
2586 | if (imode != -1) { | |
e62f0680 | 2587 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2588 | fd = PerlLIO_open3(path, imode, perm); |
2589 | } | |
2590 | } | |
2591 | if (fd >= 0) { | |
3b6c1aba | 2592 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2593 | mode++; |
2594 | if (!f) { | |
2595 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2596 | } |
2597 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2598 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2599 | return NULL; | |
2600 | } | |
d9dac8cd | 2601 | } |
aa063c35 | 2602 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2603 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2604 | if (*mode == IoTYPE_APPEND) |
2605 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2606 | return f; |
2607 | } | |
2608 | else { | |
2609 | if (f) { | |
6f207bd3 | 2610 | NOOP; |
14a5cf38 | 2611 | /* |
71200d45 | 2612 | * FIXME: pop layers ??? |
14a5cf38 JH |
2613 | */ |
2614 | } | |
2615 | return NULL; | |
2616 | } | |
9e353e3b NIS |
2617 | } |
2618 | ||
71200d45 | 2619 | PerlIO * |
ecdeb87c | 2620 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2621 | { |
dcda55fc | 2622 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2623 | int fd = os->fd; |
ecdeb87c NIS |
2624 | if (flags & PERLIO_DUP_FD) { |
2625 | fd = PerlLIO_dup(fd); | |
2626 | } | |
22c96fc1 | 2627 | if (fd >= 0) { |
ecdeb87c | 2628 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2629 | if (f) { |
2630 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2631 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2632 | return f; |
2633 | } | |
71200d45 NIS |
2634 | } |
2635 | return NULL; | |
2636 | } | |
2637 | ||
2638 | ||
9e353e3b | 2639 | SSize_t |
f62ce20a | 2640 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2641 | { |
97aff369 | 2642 | dVAR; |
de009b76 | 2643 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2644 | #ifdef PERLIO_STD_SPECIAL |
2645 | if (fd == 0) | |
2646 | return PERLIO_STD_IN(fd, vbuf, count); | |
2647 | #endif | |
81428673 | 2648 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2649 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2650 | return 0; |
1fd8f4ce | 2651 | } |
14a5cf38 | 2652 | while (1) { |
b464bac0 | 2653 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2654 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2655 | if (len < 0) { |
2656 | if (errno != EAGAIN) { | |
2657 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2658 | } | |
2659 | } | |
2660 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2661 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2662 | SETERRNO(0,0); |
2663 | } | |
14a5cf38 JH |
2664 | return len; |
2665 | } | |
2666 | PERL_ASYNC_CHECK(); | |
2667 | } | |
b464bac0 | 2668 | /*NOTREACHED*/ |
9e353e3b NIS |
2669 | } |
2670 | ||
2671 | SSize_t | |
f62ce20a | 2672 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2673 | { |
97aff369 | 2674 | dVAR; |
de009b76 | 2675 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2676 | #ifdef PERLIO_STD_SPECIAL |
2677 | if (fd == 1 || fd == 2) | |
2678 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2679 | #endif | |
14a5cf38 | 2680 | while (1) { |
de009b76 | 2681 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2682 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2683 | if (len < 0) { |
2684 | if (errno != EAGAIN) { | |
2685 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2686 | } | |
2687 | } | |
14a5cf38 JH |
2688 | return len; |
2689 | } | |
2690 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2691 | } |
1b6737cc | 2692 | /*NOTREACHED*/ |
9e353e3b NIS |
2693 | } |
2694 | ||
9e353e3b | 2695 | Off_t |
f62ce20a | 2696 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2697 | { |
96a5add6 AL |
2698 | PERL_UNUSED_CONTEXT; |
2699 | ||
14a5cf38 | 2700 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2701 | } |
2702 | ||
71200d45 | 2703 | |
9e353e3b | 2704 | IV |
f62ce20a | 2705 | PerlIOUnix_close(pTHX_ PerlIO *f) |
9e353e3b | 2706 | { |
97aff369 | 2707 | dVAR; |
de009b76 | 2708 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2709 | int code = 0; |
168d5872 NIS |
2710 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2711 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2712 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2713 | return 0; | |
22569500 | 2714 | } |
93a8090d NIS |
2715 | } |
2716 | else { | |
93189314 | 2717 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2718 | return -1; |
2719 | } | |
14a5cf38 JH |
2720 | while (PerlLIO_close(fd) != 0) { |
2721 | if (errno != EINTR) { | |
2722 | code = -1; | |
2723 | break; | |
2724 | } | |
2725 | PERL_ASYNC_CHECK(); | |
2726 | } | |
2727 | if (code == 0) { | |
2728 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2729 | } | |
2730 | return code; | |
9e353e3b NIS |
2731 | } |
2732 | ||
27da23d5 | 2733 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2734 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2735 | "unix", |
2736 | sizeof(PerlIOUnix), | |
2737 | PERLIO_K_RAW, | |
2738 | PerlIOUnix_pushed, | |
44798d05 | 2739 | PerlIOBase_popped, |
14a5cf38 | 2740 | PerlIOUnix_open, |
86e05cf2 | 2741 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2742 | NULL, |
2743 | PerlIOUnix_fileno, | |
71200d45 | 2744 | PerlIOUnix_dup, |
14a5cf38 JH |
2745 | PerlIOUnix_read, |
2746 | PerlIOBase_unread, | |
2747 | PerlIOUnix_write, | |
2748 | PerlIOUnix_seek, | |
2749 | PerlIOUnix_tell, | |
2750 | PerlIOUnix_close, | |
22569500 NIS |
2751 | PerlIOBase_noop_ok, /* flush */ |
2752 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2753 | PerlIOBase_eof, |
2754 | PerlIOBase_error, | |
2755 | PerlIOBase_clearerr, | |
2756 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2757 | NULL, /* get_base */ |
2758 | NULL, /* get_bufsiz */ | |
2759 | NULL, /* get_ptr */ | |
2760 | NULL, /* get_cnt */ | |
2761 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2762 | }; |
2763 | ||
2764 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2765 | /* |
71200d45 | 2766 | * stdio as a layer |
14a5cf38 | 2767 | */ |
9e353e3b | 2768 | |
313e59c8 NIS |
2769 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2770 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2771 | broken by the last second glibc 2.3 fix | |
2772 | */ | |
2773 | #define STDIO_BUFFER_WRITABLE | |
2774 | #endif | |
2775 | ||
2776 | ||
14a5cf38 JH |
2777 | typedef struct { |
2778 | struct _PerlIO base; | |
22569500 | 2779 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2780 | } PerlIOStdio; |
2781 | ||
2782 | IV | |
f62ce20a | 2783 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2784 | { |
96a5add6 AL |
2785 | PERL_UNUSED_CONTEXT; |
2786 | ||
c4420975 AL |
2787 | if (PerlIOValid(f)) { |
2788 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2789 | if (s) | |
2790 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2791 | } |
2792 | errno = EBADF; | |
2793 | return -1; | |
9e353e3b NIS |
2794 | } |
2795 | ||
766a733e | 2796 | char * |
14a5cf38 JH |
2797 | PerlIOStdio_mode(const char *mode, char *tmode) |
2798 | { | |
de009b76 | 2799 | char * const ret = tmode; |
a0625d38 SR |
2800 | if (mode) { |
2801 | while (*mode) { | |
2802 | *tmode++ = *mode++; | |
2803 | } | |
14a5cf38 | 2804 | } |
95005ad8 | 2805 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2806 | *tmode++ = 'b'; |
2807 | #endif | |
14a5cf38 JH |
2808 | *tmode = '\0'; |
2809 | return ret; | |
2810 | } | |
2811 | ||
4b803d04 | 2812 | IV |
2dc2558e | 2813 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2814 | { |
1fd8f4ce NIS |
2815 | PerlIO *n; |
2816 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2817 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2818 | if (toptab == tab) { |
2819 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2820 | PerlIO_pop(aTHX_ f); | |
2821 | return 0; | |
2822 | } else { | |
de009b76 | 2823 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2824 | char tmode[8]; |
2825 | FILE *stdio; | |
81428673 | 2826 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2827 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2828 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2829 | /* We never call down so do any pending stuff now */ | |
2830 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2831 | } |
1fd8f4ce NIS |
2832 | else { |
2833 | return -1; | |
2834 | } | |
2835 | } | |
14a5cf38 | 2836 | } |
2dc2558e | 2837 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2838 | } |
2839 | ||
22569500 | 2840 | |
9e353e3b | 2841 | PerlIO * |
4b069b44 | 2842 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2843 | { |
14a5cf38 JH |
2844 | dTHX; |
2845 | PerlIO *f = NULL; | |
2846 | if (stdio) { | |
22569500 | 2847 | PerlIOStdio *s; |
4b069b44 NIS |
2848 | if (!mode || !*mode) { |
2849 | /* We need to probe to see how we can open the stream | |
2850 | so start with read/write and then try write and read | |
2851 | we dup() so that we can fclose without loosing the fd. | |
2852 | ||
2853 | Note that the errno value set by a failing fdopen | |
2854 | varies between stdio implementations. | |
2855 | */ | |
de009b76 | 2856 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2857 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2858 | if (!f2) { |
a33cf58c | 2859 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2860 | } |
2861 | if (!f2) { | |
a33cf58c | 2862 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2863 | } |
2864 | if (!f2) { | |
2865 | /* Don't seem to be able to open */ | |
2866 | PerlLIO_close(fd); | |
2867 | return f; | |
2868 | } | |
2869 | fclose(f2); | |
22569500 | 2870 | } |
a0714e2c | 2871 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2872 | s = PerlIOSelf(f, PerlIOStdio); |
2873 | s->stdio = stdio; | |
2874 | } | |
14a5cf38 JH |
2875 | } |
2876 | return f; | |
9e353e3b NIS |
2877 | } |
2878 | ||
2879 | PerlIO * | |
14a5cf38 JH |
2880 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2881 | IV n, const char *mode, int fd, int imode, | |
2882 | int perm, PerlIO *f, int narg, SV **args) | |
2883 | { | |
2884 | char tmode[8]; | |
d9dac8cd | 2885 | if (PerlIOValid(f)) { |
dcda55fc AL |
2886 | const char * const path = SvPV_nolen_const(*args); |
2887 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2888 | FILE *stdio; |
2889 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2890 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2891 | s->stdio); |
2892 | if (!s->stdio) | |
2893 | return NULL; | |
2894 | s->stdio = stdio; | |
1751d015 | 2895 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2896 | return f; |
2897 | } | |
2898 | else { | |
2899 | if (narg > 0) { | |
dcda55fc | 2900 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2901 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2902 | mode++; |
2903 | fd = PerlLIO_open3(path, imode, perm); | |
2904 | } | |
2905 | else { | |
95005ad8 GH |
2906 | FILE *stdio; |
2907 | bool appended = FALSE; | |
2908 | #ifdef __CYGWIN__ | |
2909 | /* Cygwin wants its 'b' early. */ | |
2910 | appended = TRUE; | |
2911 | mode = PerlIOStdio_mode(mode, tmode); | |
2912 | #endif | |
2913 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2914 | if (stdio) { |
6f0313ac JH |
2915 | if (!f) { |
2916 | f = PerlIO_allocate(aTHX); | |
2917 | } | |
95005ad8 GH |
2918 | if (!appended) |
2919 | mode = PerlIOStdio_mode(mode, tmode); | |
2920 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2921 | if (f) { | |
0f0f9e2b JH |
2922 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2923 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
2924 | } else { | |
2925 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
2926 | } |
2927 | return f; | |
2928 | } | |
2929 | else { | |
2930 | return NULL; | |
2931 | } | |
14a5cf38 JH |
2932 | } |
2933 | } | |
2934 | if (fd >= 0) { | |
2935 | FILE *stdio = NULL; | |
2936 | int init = 0; | |
3b6c1aba | 2937 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2938 | init = 1; |
2939 | mode++; | |
2940 | } | |
2941 | if (init) { | |
2942 | switch (fd) { | |
2943 | case 0: | |
2944 | stdio = PerlSIO_stdin; | |
2945 | break; | |
2946 | case 1: | |
2947 | stdio = PerlSIO_stdout; | |
2948 | break; | |
2949 | case 2: | |
2950 | stdio = PerlSIO_stderr; | |
2951 | break; | |
2952 | } | |
2953 | } | |
2954 | else { | |
2955 | stdio = PerlSIO_fdopen(fd, mode = | |
2956 | PerlIOStdio_mode(mode, tmode)); | |
2957 | } | |
2958 | if (stdio) { | |
d9dac8cd NIS |
2959 | if (!f) { |
2960 | f = PerlIO_allocate(aTHX); | |
2961 | } | |
a33cf58c | 2962 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
2963 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2964 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 2965 | } |
14a5cf38 JH |
2966 | return f; |
2967 | } | |
2968 | } | |
2969 | } | |
ee518936 | 2970 | return NULL; |
9e353e3b NIS |
2971 | } |
2972 | ||
1751d015 | 2973 | PerlIO * |
ecdeb87c | 2974 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
2975 | { |
2976 | /* This assumes no layers underneath - which is what | |
2977 | happens, but is not how I remember it. NI-S 2001/10/16 | |
2978 | */ | |
ecdeb87c | 2979 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 2980 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 2981 | const int fd = fileno(stdio); |
9217ff3f | 2982 | char mode[8]; |
ecdeb87c | 2983 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 2984 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
2985 | if (dfd >= 0) { |
2986 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
2987 | goto set_this; | |
ecdeb87c NIS |
2988 | } |
2989 | else { | |
6f207bd3 | 2990 | NOOP; |
ecdeb87c NIS |
2991 | /* FIXME: To avoid messy error recovery if dup fails |
2992 | re-use the existing stdio as though flag was not set | |
2993 | */ | |
2994 | } | |
2995 | } | |
9217ff3f NIS |
2996 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
2997 | set_this: | |
694c95cf JH |
2998 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2999 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
1751d015 NIS |
3000 | } |
3001 | return f; | |
3002 | } | |
3003 | ||
0d7a5398 NIS |
3004 | static int |
3005 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3006 | { | |
96a5add6 AL |
3007 | PERL_UNUSED_CONTEXT; |
3008 | ||
0d7a5398 | 3009 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3010 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3011 | */ |
ef8eacb8 AT |
3012 | # if defined(__UCLIBC__) |
3013 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
3014 | f->__filedes = -1; | |
3015 | return 1; | |
3016 | # elif defined(__GLIBC__) | |
0d7a5398 | 3017 | /* There may be a better way for GLIBC: |
37725cdc | 3018 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3019 | */ |
3020 | f->_fileno = -1; | |
3021 | return 1; | |
3022 | # elif defined(__sun__) | |
f5992bc4 | 3023 | PERL_UNUSED_ARG(f); |
cfedb851 | 3024 | return 0; |
0d7a5398 NIS |
3025 | # elif defined(__hpux) |
3026 | f->__fileH = 0xff; | |
3027 | f->__fileL = 0xff; | |
3028 | return 1; | |
9837d373 | 3029 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3030 | your platform does not have special entry try this one. |
9837d373 NIS |
3031 | [For OSF only have confirmation for Tru64 (alpha) |
3032 | but assume other OSFs will be similar.] | |
37725cdc | 3033 | */ |
9837d373 | 3034 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3035 | f->_file = -1; |
3036 | return 1; | |
3037 | # elif defined(__FreeBSD__) | |
3038 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
3039 | - we could insert a dummy func in the _close function entry |
3040 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3041 | */ |
3042 | f->_file = -1; | |
0c49ea6a SU |
3043 | return 1; |
3044 | # elif defined(__OpenBSD__) | |
3045 | /* There may be a better way on OpenBSD: | |
3046 | - we could insert a dummy func in the _close function entry | |
3047 | f->_close = (int (*)(void *)) dummy_close; | |
3048 | */ | |
3049 | f->_file = -1; | |
0d7a5398 | 3050 | return 1; |
59ad941d IZ |
3051 | # elif defined(__EMX__) |
3052 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3053 | f->_handle = -1; | |
3054 | return 1; | |
0d7a5398 NIS |
3055 | # elif defined(__CYGWIN__) |
3056 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3057 | - we could insert a dummy func in the _close function entry |
3058 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3059 | */ |
3060 | f->_file = -1; | |
3061 | return 1; | |
3062 | # elif defined(WIN32) | |
3063 | # if defined(__BORLANDC__) | |
3064 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3065 | # elif defined(UNDER_CE) |
3066 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3067 | structure at all | |
3068 | */ | |
0d7a5398 NIS |
3069 | # else |
3070 | f->_file = -1; | |
3071 | # endif | |
3072 | return 1; | |
3073 | # else | |
3074 | #if 0 | |
37725cdc | 3075 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3076 | (which isn't thread safe) instead |
37725cdc | 3077 | */ |
0d7a5398 NIS |
3078 | # error "Don't know how to set FILE.fileno on your platform" |
3079 | #endif | |
8772537c | 3080 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3081 | return 0; |
3082 | # endif | |
3083 | } | |
3084 | ||
1751d015 | 3085 | IV |
f62ce20a | 3086 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3087 | { |
c4420975 | 3088 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3089 | if (!stdio) { |
3090 | errno = EBADF; | |
3091 | return -1; | |
3092 | } | |
9217ff3f | 3093 | else { |
de009b76 | 3094 | const int fd = fileno(stdio); |
0d7a5398 | 3095 | int invalidate = 0; |
bbfd922f | 3096 | IV result = 0; |
0d7a5398 NIS |
3097 | int saveerr = 0; |
3098 | int dupfd = 0; | |
3099 | #ifdef SOCKS5_VERSION_NAME | |
37725cdc NIS |
3100 | /* Socks lib overrides close() but stdio isn't linked to |
3101 | that library (though we are) - so we must call close() | |
3102 | on sockets on stdio's behalf. | |
3103 | */ | |
0d7a5398 NIS |
3104 | int optval; |
3105 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3106 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3107 | invalidate = 1; |
0d7a5398 | 3108 | #endif |
6b4ce6c8 | 3109 | if (PerlIOUnix_refcnt_dec(fd) > 0) /* File descriptor still in use */ |
0d7a5398 | 3110 | invalidate = 1; |
0d7a5398 | 3111 | if (invalidate) { |
6b4ce6c8 AL |
3112 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3113 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3114 | return 0; | |
3115 | if (stdio == stdout || stdio == stderr) | |
3116 | return PerlIO_flush(f); | |
37725cdc NIS |
3117 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3118 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3119 | fileno slot of the FILE * | |
3120 | */ | |
bbfd922f | 3121 | result = PerlIO_flush(f); |
0d7a5398 | 3122 | saveerr = errno; |
6b4ce6c8 AL |
3123 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
3124 | if (!invalidate) | |
3125 | dupfd = PerlLIO_dup(fd); | |
37725cdc | 3126 | } |
0d7a5398 | 3127 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3128 | /* We treat error from stdio as success if we invalidated |
3129 | errno may NOT be expected EBADF | |
e8529473 NIS |
3130 | */ |
3131 | if (invalidate && result != 0) { | |
0d7a5398 NIS |
3132 | errno = saveerr; |
3133 | result = 0; | |
37725cdc | 3134 | } |
6b4ce6c8 AL |
3135 | #ifdef SOCKS5_VERSION_NAME |
3136 | /* in SOCKS' case, let close() determine return value */ | |
3137 | result = close(fd); | |
3138 | #endif | |
0d7a5398 NIS |
3139 | if (dupfd) { |
3140 | PerlLIO_dup2(dupfd,fd); | |
8a521f28 | 3141 | PerlLIO_close(dupfd); |
9217ff3f NIS |
3142 | } |
3143 | return result; | |
37725cdc | 3144 | } |
1751d015 NIS |
3145 | } |
3146 | ||
9e353e3b | 3147 | SSize_t |
f62ce20a | 3148 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3149 | { |
97aff369 | 3150 | dVAR; |
c4420975 | 3151 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3152 | SSize_t got = 0; |
4d948241 NIS |
3153 | for (;;) { |
3154 | if (count == 1) { | |
3155 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3156 | /* | |
3157 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3158 | * stdio does not do that for fread() | |
3159 | */ | |
de009b76 | 3160 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3161 | if (ch != EOF) { |
3162 | *buf = ch; | |
3163 | got = 1; | |
3164 | } | |
14a5cf38 | 3165 | } |
4d948241 NIS |
3166 | else |
3167 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3168 | if (got == 0 && PerlSIO_ferror(s)) |
3169 | got = -1; | |
42a7a32f | 3170 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3171 | break; |
3172 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3173 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3174 | } |
14a5cf38 | 3175 | return got; |
9e353e3b NIS |
3176 | } |
3177 | ||
3178 | SSize_t | |
f62ce20a | 3179 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3180 | { |
14a5cf38 | 3181 | SSize_t unread = 0; |
c4420975 | 3182 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3183 | |
313e59c8 | 3184 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3185 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3186 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3187 | STDCHAR *base = PerlIO_get_base(f); | |
3188 | SSize_t cnt = PerlIO_get_cnt(f); | |
3189 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3190 | SSize_t avail = ptr - base; | |
3191 | if (avail > 0) { | |
3192 | if (avail > count) { | |
3193 | avail = count; | |
3194 | } | |
3195 | ptr -= avail; | |
3196 | Move(buf-avail,ptr,avail,STDCHAR); | |
3197 | count -= avail; | |
3198 | unread += avail; | |
3199 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3200 | if (PerlSIO_feof(s) && unread >= 0) |
3201 | PerlSIO_clearerr(s); | |
3202 | } | |
3203 | } | |
313e59c8 NIS |
3204 | else |
3205 | #endif | |
3206 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3207 | /* We can get pointer to buffer but not its base |
3208 | Do ungetc() but check chars are ending up in the | |
3209 | buffer | |
3210 | */ | |
3211 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3212 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3213 | while (count > 0) { | |
de009b76 | 3214 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3215 | if (ungetc(ch,s) != ch) { |
3216 | /* ungetc did not work */ | |
3217 | break; | |
3218 | } | |
3219 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3220 | /* Did not change pointer as expected */ | |
3221 | fgetc(s); /* get char back again */ | |
3222 | break; | |
3223 | } | |
3224 | /* It worked ! */ | |
3225 | count--; | |
3226 | unread++; | |
93679785 NIS |
3227 | } |
3228 | } | |
3229 | ||
3230 | if (count > 0) { | |
3231 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3232 | } |
3233 | return unread; | |
9e353e3b NIS |
3234 | } |
3235 | ||
3236 | SSize_t | |
f62ce20a | 3237 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3238 | { |
97aff369 | 3239 | dVAR; |
4d948241 NIS |
3240 | SSize_t got; |
3241 | for (;;) { | |
3242 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3243 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3244 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3245 | break; |
3246 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3247 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3248 | } |
3249 | return got; | |
9e353e3b NIS |
3250 | } |
3251 | ||
94a175e1 | 3252 | IV |
f62ce20a | 3253 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3254 | { |
c4420975 | 3255 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3256 | PERL_UNUSED_CONTEXT; |
3257 | ||
94a175e1 | 3258 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3259 | } |
3260 | ||
3261 | Off_t | |
f62ce20a | 3262 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3263 | { |
c4420975 | 3264 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3265 | PERL_UNUSED_CONTEXT; |
3266 | ||
94a175e1 | 3267 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3268 | } |
3269 | ||
3270 | IV | |
f62ce20a | 3271 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3272 | { |
c4420975 | 3273 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3274 | PERL_UNUSED_CONTEXT; |
3275 | ||
14a5cf38 JH |
3276 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3277 | return PerlSIO_fflush(stdio); | |
3278 | } | |
3279 | else { | |
6f207bd3 | 3280 | NOOP; |
88b61e10 | 3281 | #if 0 |
14a5cf38 JH |
3282 | /* |
3283 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3284 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3285 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3286 | * layer read-to-read |
14a5cf38 JH |
3287 | */ |
3288 | /* | |
71200d45 | 3289 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3290 | */ |
79852593 | 3291 | const int err = errno; |
14a5cf38 JH |
3292 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
3293 | errno = err; | |
88b61e10 | 3294 | #endif |
14a5cf38 JH |
3295 | } |
3296 | return 0; | |
9e353e3b NIS |
3297 | } |
3298 | ||
3299 | IV | |
f62ce20a | 3300 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3301 | { |
96a5add6 AL |
3302 | PERL_UNUSED_CONTEXT; |
3303 | ||
14a5cf38 | 3304 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3305 | } |
3306 | ||
3307 | IV | |
f62ce20a | 3308 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3309 | { |
96a5add6 AL |
3310 | PERL_UNUSED_CONTEXT; |
3311 | ||
263df5f1 | 3312 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3313 | } |
3314 | ||
3315 | void | |
f62ce20a | 3316 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3317 | { |
96a5add6 AL |
3318 | PERL_UNUSED_CONTEXT; |
3319 | ||
14a5cf38 | 3320 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3321 | } |
3322 | ||
3323 | void | |
f62ce20a | 3324 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3325 | { |
96a5add6 AL |
3326 | PERL_UNUSED_CONTEXT; |
3327 | ||
9e353e3b | 3328 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3329 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3330 | #else |
bd61b366 | 3331 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3332 | #endif |
3333 | } | |
3334 | ||
3335 | #ifdef FILE_base | |
3336 | STDCHAR * | |
f62ce20a | 3337 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3338 | { |
c4420975 | 3339 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3340 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3341 | } |
3342 | ||
3343 | Size_t | |
f62ce20a | 3344 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3345 | { |
c4420975 | 3346 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3347 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3348 | } |
3349 | #endif | |
3350 | ||
3351 | #ifdef USE_STDIO_PTR | |
3352 | STDCHAR * | |
f62ce20a | 3353 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3354 | { |
c4420975 | 3355 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3356 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3357 | } |
3358 | ||
3359 | SSize_t | |
f62ce20a | 3360 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3361 | { |
c4420975 | 3362 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3363 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3364 | } |
3365 | ||
3366 | void | |
f62ce20a | 3367 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3368 | { |
c4420975 | 3369 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3370 | if (ptr != NULL) { |
9e353e3b | 3371 | #ifdef STDIO_PTR_LVALUE |
22569500 | 3372 | PerlSIO_set_ptr(stdio, (void*)ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3373 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
14a5cf38 | 3374 | if (PerlSIO_get_cnt(stdio) != (cnt)) { |
14a5cf38 JH |
3375 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
3376 | } | |
9e353e3b NIS |
3377 | #endif |
3378 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3379 | /* |
71200d45 | 3380 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3381 | */ |
3382 | return; | |
9e353e3b | 3383 | #endif |
22569500 | 3384 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3385 | PerlProc_abort(); |
22569500 | 3386 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3387 | } |
3388 | /* | |
71200d45 | 3389 | * Now (or only) set cnt |
14a5cf38 | 3390 | */ |
9e353e3b | 3391 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3392 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3393 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3394 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3395 | PerlSIO_set_ptr(stdio, |
3396 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3397 | cnt)); | |
22569500 | 3398 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3399 | PerlProc_abort(); |
22569500 NIS |
3400 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3401 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3402 | } |
3403 | ||
93679785 | 3404 | |
9e353e3b NIS |
3405 | #endif |
3406 | ||
93679785 NIS |
3407 | IV |
3408 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3409 | { | |
c4420975 | 3410 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3411 | int c; |
96a5add6 AL |
3412 | PERL_UNUSED_CONTEXT; |
3413 | ||
93679785 NIS |
3414 | /* |
3415 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3416 | */ | |
3417 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3418 | if (PerlSIO_fflush(stdio) != 0) | |
3419 | return EOF; | |
3420 | } | |
3421 | c = PerlSIO_fgetc(stdio); | |
3422 | if (c == EOF) | |
3423 | return EOF; | |
3424 | ||
3425 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3426 | |
3427 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3428 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3429 | /* Fake ungetc() to the real buffer in case system's ungetc |
3430 | goes elsewhere | |
3431 | */ | |
3432 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3433 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3434 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3435 | if (ptr == base+1) { | |
3436 | *--ptr = (STDCHAR) c; | |
3437 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3438 | if (PerlSIO_feof(stdio)) | |
3439 | PerlSIO_clearerr(stdio); | |
3440 | return 0; | |
3441 | } | |
3442 | } | |
313e59c8 NIS |
3443 | else |
3444 | #endif | |
3445 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3446 | STDCHAR ch = c; |
3447 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3448 | return 0; | |
3449 | } | |
3450 | } | |
93679785 NIS |
3451 | #endif |
3452 | ||
3453 | #if defined(VMS) | |
3454 | /* An ungetc()d char is handled separately from the regular | |
3455 | * buffer, so we stuff it in the buffer ourselves. | |
3456 | * Should never get called as should hit code above | |
3457 | */ | |
bad9695d NIS |
3458 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3459 | (*stdio)->_cnt++; | |
93679785 NIS |
3460 | #else |
3461 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3462 | using ungetc(). |
93679785 NIS |
3463 | */ |
3464 | if (PerlSIO_ungetc(c, stdio) != c) | |
3465 | return EOF; | |
3466 | #endif | |
3467 | return 0; | |
3468 | } | |
3469 | ||
3470 | ||
3471 | ||
27da23d5 | 3472 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3473 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3474 | "stdio", |
3475 | sizeof(PerlIOStdio), | |
86e05cf2 | 3476 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3477 | PerlIOStdio_pushed, |
44798d05 | 3478 | PerlIOBase_popped, |
14a5cf38 | 3479 | PerlIOStdio_open, |
86e05cf2 | 3480 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3481 | NULL, |
3482 | PerlIOStdio_fileno, | |
71200d45 | 3483 | PerlIOStdio_dup, |
14a5cf38 JH |
3484 | PerlIOStdio_read, |
3485 | PerlIOStdio_unread, | |
3486 | PerlIOStdio_write, | |
3487 | PerlIOStdio_seek, | |
3488 | PerlIOStdio_tell, | |
3489 | PerlIOStdio_close, | |
3490 | PerlIOStdio_flush, | |
3491 | PerlIOStdio_fill, | |
3492 | PerlIOStdio_eof, | |
3493 | PerlIOStdio_error, | |
3494 | PerlIOStdio_clearerr, | |
3495 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3496 | #ifdef FILE_base |
14a5cf38 JH |
3497 | PerlIOStdio_get_base, |
3498 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3499 | #else |
14a5cf38 JH |
3500 | NULL, |
3501 | NULL, | |
9e353e3b NIS |
3502 | #endif |
3503 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3504 | PerlIOStdio_get_ptr, |
3505 | PerlIOStdio_get_cnt, | |
15b61c98 | 3506 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3507 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3508 | # else |
3509 | NULL, | |
3510 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3511 | #else | |
3512 | NULL, | |
14a5cf38 JH |
3513 | NULL, |
3514 | NULL, | |
15b61c98 | 3515 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3516 | }; |
3517 | ||
b9d6bf13 JH |
3518 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3519 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3520 | FILE * |
81428673 | 3521 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3522 | { |
e87a358a | 3523 | dTHX; |
81428673 NIS |
3524 | FILE *stdio = NULL; |
3525 | if (PerlIOValid(f)) { | |
3526 | char buf[8]; | |
3527 | PerlIO_flush(f); | |
3528 | if (!mode || !*mode) { | |
3529 | mode = PerlIO_modestr(f, buf); | |
3530 | } | |
3531 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3532 | if (stdio) { | |
3533 | PerlIOl *l = *f; | |
9f75cc58 | 3534 | PerlIO *f2; |
81428673 NIS |
3535 | /* De-link any lower layers so new :stdio sticks */ |
3536 | *f = NULL; | |
a0714e2c | 3537 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3538 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 NIS |
3539 | s->stdio = stdio; |
3540 | /* Link previous lower layers under new one */ | |
3541 | *PerlIONext(f) = l; | |
3542 | } | |
3543 | else { | |
3544 | /* restore layers list */ | |
3545 | *f = l; | |
3546 | } | |
a33cf58c | 3547 | } |
14a5cf38 JH |
3548 | } |
3549 | return stdio; | |
9e353e3b NIS |
3550 | } |
3551 | ||
81428673 | 3552 | |
9e353e3b NIS |
3553 | FILE * |
3554 | PerlIO_findFILE(PerlIO *f) | |
3555 | { | |
14a5cf38 JH |
3556 | PerlIOl *l = *f; |
3557 | while (l) { | |
3558 | if (l->tab == &PerlIO_stdio) { | |
3559 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3560 | return s->stdio; | |
3561 | } | |
3562 | l = *PerlIONext(&l); | |
f7e7eb72 | 3563 | } |
4b069b44 | 3564 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bd61b366 | 3565 | return PerlIO_exportFILE(f, NULL); |
9e353e3b NIS |
3566 | } |
3567 | ||
b9d6bf13 | 3568 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3569 | void |
3570 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3571 | { | |
27da23d5 | 3572 | dVAR; |
22569500 NIS |
3573 | PerlIOl *l; |
3574 | while ((l = *p)) { | |
3575 | if (l->tab == &PerlIO_stdio) { | |
3576 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3577 | if (s->stdio == f) { | |
3578 | dTHX; | |
3579 | PerlIO_pop(aTHX_ p); | |
3580 | return; | |
3581 | } | |
3582 | } | |
3583 | p = PerlIONext(p); | |
3584 | } | |
3585 | return; | |
9e353e3b NIS |
3586 | } |
3587 | ||
3588 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3589 | /* |
71200d45 | 3590 | * perlio buffer layer |
14a5cf38 | 3591 | */ |
9e353e3b | 3592 | |
5e2ab84b | 3593 | IV |
2dc2558e | 3594 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3595 | { |
14a5cf38 | 3596 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3597 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3598 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3599 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3600 | } | |
4b069b44 | 3601 | if (*PerlIONext(f)) { |
de009b76 | 3602 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3603 | if (posn != (Off_t) - 1) { |
3604 | b->posn = posn; | |
3605 | } | |
14a5cf38 | 3606 | } |
2dc2558e | 3607 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3608 | } |
3609 | ||
9e353e3b | 3610 | PerlIO * |
14a5cf38 JH |
3611 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3612 | IV n, const char *mode, int fd, int imode, int perm, | |
3613 | PerlIO *f, int narg, SV **args) | |
3614 | { | |
04892f78 | 3615 | if (PerlIOValid(f)) { |
14a5cf38 | 3616 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3617 | PerlIO_funcs *tab = |
3618 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3619 | if (tab && tab->Open) | |
3620 | next = | |
3621 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3622 | next, narg, args); | |
2dc2558e | 3623 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3624 | return NULL; |
3625 | } | |
3626 | } | |
3627 | else { | |
04892f78 | 3628 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3629 | int init = 0; |
3b6c1aba | 3630 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3631 | init = 1; |
3632 | /* | |
71200d45 | 3633 | * mode++; |
14a5cf38 JH |
3634 | */ |
3635 | } | |
67363c0d JH |
3636 | if (tab && tab->Open) |
3637 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3638 | f, narg, args); | |
3639 | else | |
3640 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3641 | if (f) { |
22569500 | 3642 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3643 | /* |
3644 | * if push fails during open, open fails. close will pop us. | |
3645 | */ | |
3646 | PerlIO_close (f); | |
3647 | return NULL; | |
3648 | } else { | |
3649 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3650 | if (init && fd == 2) { |
3651 | /* | |
3652 | * Initial stderr is unbuffered | |
3653 | */ | |
3654 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3655 | } | |
23b84778 IZ |
3656 | #ifdef PERLIO_USING_CRLF |
3657 | # ifdef PERLIO_IS_BINMODE_FD | |
3658 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3659 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3660 | else |
3661 | # endif | |
3662 | /* | |
3663 | * do something about failing setmode()? --jhi | |
3664 | */ | |
3665 | PerlLIO_setmode(fd, O_BINARY); | |
3666 | #endif | |
14a5cf38 JH |
3667 | } |
3668 | } | |
ee518936 | 3669 | } |
14a5cf38 | 3670 | return f; |
9e353e3b NIS |
3671 | } |
3672 | ||
14a5cf38 JH |
3673 | /* |
3674 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3675 | * read or write state. For write state, we put the postponed data through |
3676 | * the next layers. For read state, we seek() the next layers to the | |
3677 | * offset given by current position in the buffer, and discard the buffer | |
3678 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3679 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3680 | */ |
9e353e3b | 3681 | IV |
f62ce20a | 3682 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3683 | { |
dcda55fc | 3684 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3685 | int code = 0; |
04892f78 | 3686 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3687 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3688 | /* | |
71200d45 | 3689 | * write() the buffer |
14a5cf38 | 3690 | */ |
de009b76 AL |
3691 | const STDCHAR *buf = b->buf; |
3692 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3693 | while (p < b->ptr) { |
3694 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3695 | if (count > 0) { | |
3696 | p += count; | |
3697 | } | |
3698 | else if (count < 0 || PerlIO_error(n)) { | |
3699 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3700 | code = -1; | |
3701 | break; | |
3702 | } | |
3703 | } | |
3704 | b->posn += (p - buf); | |
3705 | } | |
3706 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3707 | STDCHAR *buf = PerlIO_get_base(f); | |
3708 | /* | |
71200d45 | 3709 | * Note position change |
14a5cf38 JH |
3710 | */ |
3711 | b->posn += (b->ptr - buf); | |
3712 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3713 | /* We did not consume all of it - try and seek downstream to |
3714 | our logical position | |
14a5cf38 | 3715 | */ |
4b069b44 | 3716 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3717 | /* Reload n as some layers may pop themselves on seek */ |
3718 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3719 | } |
ba5c3fe9 | 3720 | else { |
4b069b44 NIS |
3721 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3722 | data is lost for good - so return saying "ok" having undone | |
3723 | the position adjust | |
3724 | */ | |
3725 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3726 | return code; |
3727 | } | |
14a5cf38 JH |
3728 | } |
3729 | } | |
3730 | b->ptr = b->end = b->buf; | |
3731 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3732 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3733 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3734 | code = -1; |
3735 | return code; | |
6f9d8c32 NIS |
3736 | } |
3737 | ||
93c2c2ec IZ |
3738 | /* This discards the content of the buffer after b->ptr, and rereads |
3739 | * the buffer from the position off in the layer downstream; here off | |
3740 | * is at offset corresponding to b->ptr - b->buf. | |
3741 | */ | |
06da4f11 | 3742 | IV |
f62ce20a | 3743 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3744 | { |
dcda55fc | 3745 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3746 | PerlIO *n = PerlIONext(f); |
3747 | SSize_t avail; | |
3748 | /* | |
4b069b44 NIS |
3749 | * Down-stream flush is defined not to loose read data so is harmless. |
3750 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3751 | */ |
93c2c2ec | 3752 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3753 | return -1; |
3754 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3755 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3756 | |
3757 | if (!b->buf) | |
22569500 | 3758 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3759 | |
0f0eef27 | 3760 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3761 | |
14a5cf38 | 3762 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3763 | |
3764 | if (!PerlIOValid(n)) { | |
3765 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3766 | return -1; | |
3767 | } | |
3768 | ||
14a5cf38 JH |
3769 | if (PerlIO_fast_gets(n)) { |
3770 | /* | |
04892f78 | 3771 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3772 | * ->Read() because that will loop till it gets what we asked for |
3773 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3774 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3775 | */ |
3776 | avail = PerlIO_get_cnt(n); | |
3777 | if (avail <= 0) { | |
3778 | avail = PerlIO_fill(n); | |
3779 | if (avail == 0) | |
3780 | avail = PerlIO_get_cnt(n); | |
3781 | else { | |
3782 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3783 | avail = 0; | |
3784 | } | |
3785 | } | |
3786 | if (avail > 0) { | |
3787 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3788 | const SSize_t cnt = avail; |
eb160463 | 3789 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3790 | avail = b->bufsiz; |
3791 | Copy(ptr, b->buf, avail, STDCHAR); | |
3792 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3793 | } | |
3794 | } | |
3795 | else { | |
3796 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3797 | } | |
3798 | if (avail <= 0) { | |
3799 | if (avail == 0) | |
3800 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3801 | else | |
3802 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3803 | return -1; | |
3804 | } | |
3805 | b->end = b->buf + avail; | |
3806 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3807 | return 0; | |
06da4f11 NIS |
3808 | } |
3809 | ||
6f9d8c32 | 3810 | SSize_t |
f62ce20a | 3811 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3812 | { |
04892f78 | 3813 | if (PerlIOValid(f)) { |
dcda55fc | 3814 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3815 | if (!b->ptr) |
3816 | PerlIO_get_base(f); | |
f62ce20a | 3817 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3818 | } |
3819 | return 0; | |
6f9d8c32 NIS |
3820 | } |
3821 | ||
9e353e3b | 3822 | SSize_t |
f62ce20a | 3823 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3824 | { |
14a5cf38 | 3825 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3826 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3827 | SSize_t unread = 0; |
3828 | SSize_t avail; | |
3829 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3830 | PerlIO_flush(f); | |
3831 | if (!b->buf) | |
3832 | PerlIO_get_base(f); | |
3833 | if (b->buf) { | |
3834 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3835 | /* | |
3836 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3837 | * which have been read back to buffer start |
14a5cf38 JH |
3838 | */ |
3839 | avail = (b->ptr - b->buf); | |
3840 | } | |
3841 | else { | |
3842 | /* | |
3843 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3844 | * unread |
14a5cf38 JH |
3845 | */ |
3846 | avail = b->bufsiz; | |
3847 | b->end = b->buf + avail; | |
3848 | b->ptr = b->end; | |
3849 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3850 | /* | |
71200d45 | 3851 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3852 | */ |
3853 | b->posn -= b->bufsiz; | |
3854 | } | |
3855 | if (avail > (SSize_t) count) { | |
3856 | /* | |
71200d45 | 3857 | * If we have space for more than count, just move count |
14a5cf38 JH |
3858 | */ |
3859 | avail = count; | |
3860 | } | |
3861 | if (avail > 0) { | |
3862 | b->ptr -= avail; | |
3863 | buf -= avail; | |
3864 | /* | |
3865 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3866 | * there |
14a5cf38 JH |
3867 | */ |
3868 | if (buf != b->ptr) { | |
3869 | Copy(buf, b->ptr, avail, STDCHAR); | |
3870 | } | |
3871 | count -= avail; | |
3872 | unread += avail; | |
3873 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3874 | } | |
3875 | } | |
93679785 NIS |
3876 | if (count > 0) { |
3877 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3878 | } | |
14a5cf38 | 3879 | return unread; |
760ac839 LW |
3880 | } |
3881 | ||
9e353e3b | 3882 | SSize_t |
f62ce20a | 3883 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3884 | { |
de009b76 | 3885 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3886 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3887 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3888 | Size_t written = 0; |
3889 | if (!b->buf) | |
3890 | PerlIO_get_base(f); | |
3891 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3892 | return 0; | |
0678cb22 NIS |
3893 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3894 | if (PerlIO_flush(f) != 0) { | |
3895 | return 0; | |
3896 | } | |
3897 | } | |
ee56a6b9 CS |
3898 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
3899 | flushptr = buf + count; | |
3900 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
3901 | --flushptr; | |
3902 | } | |
14a5cf38 JH |
3903 | while (count > 0) { |
3904 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
3905 | if ((SSize_t) count < avail) | |
3906 | avail = count; | |
ee56a6b9 CS |
3907 | if (flushptr > buf && flushptr <= buf + avail) |
3908 | avail = flushptr - buf; | |
14a5cf38 | 3909 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
3910 | if (avail) { |
3911 | Copy(buf, b->ptr, avail, STDCHAR); | |
3912 | count -= avail; | |
3913 | buf += avail; | |
3914 | written += avail; | |
3915 | b->ptr += avail; | |
3916 | if (buf == flushptr) | |
3917 | PerlIO_flush(f); | |
14a5cf38 JH |
3918 | } |
3919 | if (b->ptr >= (b->buf + b->bufsiz)) | |
3920 | PerlIO_flush(f); | |
3921 | } | |
3922 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
3923 | PerlIO_flush(f); | |
3924 | return written; | |
9e353e3b NIS |
3925 | } |
3926 | ||
94a175e1 | 3927 | IV |
f62ce20a | 3928 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3929 | { |
14a5cf38 JH |
3930 | IV code; |
3931 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
3932 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
3933 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
3934 | if (code == 0) { | |
de009b76 | 3935 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3936 | b->posn = PerlIO_tell(PerlIONext(f)); |
3937 | } | |
9e353e3b | 3938 | } |
14a5cf38 | 3939 | return code; |
9e353e3b NIS |
3940 | } |
3941 | ||
3942 | Off_t | |
f62ce20a | 3943 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 3944 | { |
dcda55fc | 3945 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3946 | /* |
71200d45 | 3947 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
3948 | */ |
3949 | Off_t posn = b->posn; | |
37725cdc | 3950 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
3951 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
3952 | #if 1 | |
3953 | /* As O_APPEND files are normally shared in some sense it is better | |
3954 | to flush : | |
3955 | */ | |
3956 | PerlIO_flush(f); | |
3957 | #else | |
37725cdc | 3958 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
3959 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
3960 | #endif | |
3961 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
3962 | } | |
14a5cf38 JH |
3963 | if (b->buf) { |
3964 | /* | |
71200d45 | 3965 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
3966 | */ |
3967 | posn += (b->ptr - b->buf); | |
3968 | } | |
3969 | return posn; | |
9e353e3b NIS |
3970 | } |
3971 | ||
3972 | IV | |
44798d05 NIS |
3973 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
3974 | { | |
de009b76 AL |
3975 | const IV code = PerlIOBase_popped(aTHX_ f); |
3976 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
3977 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3978 | Safefree(b->buf); | |
3979 | } | |
dcda55fc | 3980 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
3981 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
3982 | return code; | |
3983 | } | |
3984 | ||
3985 | IV | |
f62ce20a | 3986 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 3987 | { |
de009b76 AL |
3988 | const IV code = PerlIOBase_close(aTHX_ f); |
3989 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 3990 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 3991 | Safefree(b->buf); |
14a5cf38 | 3992 | } |
dcda55fc | 3993 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
3994 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
3995 | return code; | |
760ac839 LW |
3996 | } |
3997 | ||
9e353e3b | 3998 | STDCHAR * |
f62ce20a | 3999 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4000 | { |
dcda55fc | 4001 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4002 | if (!b->buf) |
4003 | PerlIO_get_base(f); | |
4004 | return b->ptr; | |
9e353e3b NIS |
4005 | } |
4006 | ||
05d1247b | 4007 | SSize_t |
f62ce20a | 4008 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4009 | { |
dcda55fc | 4010 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4011 | if (!b->buf) |
4012 | PerlIO_get_base(f); | |
4013 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
4014 | return (b->end - b->ptr); | |
4015 | return 0; | |
9e353e3b NIS |
4016 | } |
4017 | ||
4018 | STDCHAR * | |
f62ce20a | 4019 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4020 | { |
dcda55fc | 4021 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4022 | PERL_UNUSED_CONTEXT; |
4023 | ||
14a5cf38 JH |
4024 | if (!b->buf) { |
4025 | if (!b->bufsiz) | |
4026 | b->bufsiz = 4096; | |
a02a5408 | 4027 | b->buf = Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
4028 | if (!b->buf) { |
4029 | b->buf = (STDCHAR *) & b->oneword; | |
4030 | b->bufsiz = sizeof(b->oneword); | |
4031 | } | |
dcda55fc | 4032 | b->end = b->ptr = b->buf; |
06da4f11 | 4033 | } |
14a5cf38 | 4034 | return b->buf; |
9e353e3b NIS |
4035 | } |
4036 | ||
4037 | Size_t | |
f62ce20a | 4038 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4039 | { |
dcda55fc | 4040 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4041 | if (!b->buf) |
4042 | PerlIO_get_base(f); | |
4043 | return (b->end - b->buf); | |
9e353e3b NIS |
4044 | } |
4045 | ||
4046 | void | |
f62ce20a | 4047 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4048 | { |
dcda55fc | 4049 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4050 | if (!b->buf) |
4051 | PerlIO_get_base(f); | |
4052 | b->ptr = ptr; | |
4053 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) { | |
14a5cf38 JH |
4054 | assert(PerlIO_get_cnt(f) == cnt); |
4055 | assert(b->ptr >= b->buf); | |
4056 | } | |
4057 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
760ac839 LW |
4058 | } |
4059 | ||
71200d45 | 4060 | PerlIO * |
ecdeb87c | 4061 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4062 | { |
ecdeb87c | 4063 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4064 | } |
4065 | ||
4066 | ||
4067 | ||
27da23d5 | 4068 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4069 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4070 | "perlio", |
4071 | sizeof(PerlIOBuf), | |
86e05cf2 | 4072 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4073 | PerlIOBuf_pushed, |
44798d05 | 4074 | PerlIOBuf_popped, |
14a5cf38 | 4075 | PerlIOBuf_open, |
86e05cf2 | 4076 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4077 | NULL, |
4078 | PerlIOBase_fileno, | |
71200d45 | 4079 | PerlIOBuf_dup, |
14a5cf38 JH |
4080 | PerlIOBuf_read, |
4081 | PerlIOBuf_unread, | |
4082 | PerlIOBuf_write, | |
4083 | PerlIOBuf_seek, | |
4084 | PerlIOBuf_tell, | |
4085 | PerlIOBuf_close, | |
4086 | PerlIOBuf_flush, | |
4087 | PerlIOBuf_fill, | |
4088 | PerlIOBase_eof, | |
4089 | PerlIOBase_error, | |
4090 | PerlIOBase_clearerr, | |
4091 | PerlIOBase_setlinebuf, | |
4092 | PerlIOBuf_get_base, | |
4093 | PerlIOBuf_bufsiz, | |
4094 | PerlIOBuf_get_ptr, | |
4095 | PerlIOBuf_get_cnt, | |
4096 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4097 | }; |
4098 | ||
66ecd56b | 4099 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4100 | /* |
71200d45 | 4101 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4102 | */ |
5e2ab84b NIS |
4103 | |
4104 | IV | |
f62ce20a | 4105 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4106 | { |
14a5cf38 | 4107 | /* |
71200d45 | 4108 | * Should never happen |
14a5cf38 JH |
4109 | */ |
4110 | PerlIO_flush(f); | |
4111 | return 0; | |
5e2ab84b NIS |
4112 | } |
4113 | ||
4114 | IV | |
f62ce20a | 4115 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4116 | { |
14a5cf38 | 4117 | /* |
71200d45 | 4118 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4119 | */ |
4120 | PerlIO_flush(f); | |
4121 | return PerlIO_close(f); | |
5e2ab84b NIS |
4122 | } |
4123 | ||
94a175e1 | 4124 | IV |
f62ce20a | 4125 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4126 | { |
14a5cf38 | 4127 | /* |
71200d45 | 4128 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4129 | */ |
4130 | PerlIO_flush(f); | |
4131 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4132 | } |
4133 | ||
4134 | ||
4135 | IV | |
f62ce20a | 4136 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4137 | { |
dcda55fc | 4138 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4139 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4140 | Safefree(b->buf); |
14a5cf38 JH |
4141 | b->buf = NULL; |
4142 | } | |
4143 | PerlIO_pop(aTHX_ f); | |
4144 | return 0; | |
5e2ab84b NIS |
4145 | } |
4146 | ||
4147 | void | |
f62ce20a | 4148 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4149 | { |
14a5cf38 JH |
4150 | if (cnt <= 0) { |
4151 | PerlIO_flush(f); | |
4152 | } | |
4153 | else { | |
f62ce20a | 4154 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4155 | } |
5e2ab84b NIS |
4156 | } |
4157 | ||
4158 | IV | |
2dc2558e | 4159 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4160 | { |
de009b76 | 4161 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4162 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4163 | /* |
71200d45 NIS |
4164 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4165 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4166 | */ |
4167 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4168 | (PerlIOBase(PerlIONext(f))-> | |
4169 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4170 | return code; | |
5e2ab84b NIS |
4171 | } |
4172 | ||
4173 | SSize_t | |
f62ce20a | 4174 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4175 | { |
14a5cf38 JH |
4176 | SSize_t avail = PerlIO_get_cnt(f); |
4177 | SSize_t got = 0; | |
eb160463 | 4178 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4179 | avail = count; |
4180 | if (avail > 0) | |
f62ce20a | 4181 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4182 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4183 | const SSize_t more = |
14a5cf38 JH |
4184 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4185 | if (more >= 0 || got == 0) | |
4186 | got += more; | |
4187 | } | |
4188 | return got; | |
5e2ab84b NIS |
4189 | } |
4190 | ||
27da23d5 | 4191 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4192 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4193 | "pending", |
4194 | sizeof(PerlIOBuf), | |
86e05cf2 | 4195 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4196 | PerlIOPending_pushed, |
44798d05 | 4197 | PerlIOBuf_popped, |
14a5cf38 | 4198 | NULL, |
86e05cf2 | 4199 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4200 | NULL, |
4201 | PerlIOBase_fileno, | |
71200d45 | 4202 | PerlIOBuf_dup, |
14a5cf38 JH |
4203 | PerlIOPending_read, |
4204 | PerlIOBuf_unread, | |
4205 | PerlIOBuf_write, | |
4206 | PerlIOPending_seek, | |
4207 | PerlIOBuf_tell, | |
4208 | PerlIOPending_close, | |
4209 | PerlIOPending_flush, | |
4210 | PerlIOPending_fill, | |
4211 | PerlIOBase_eof, | |
4212 | PerlIOBase_error, | |
4213 | PerlIOBase_clearerr, | |
4214 | PerlIOBase_setlinebuf, | |
4215 | PerlIOBuf_get_base, | |
4216 | PerlIOBuf_bufsiz, | |
4217 | PerlIOBuf_get_ptr, | |
4218 | PerlIOBuf_get_cnt, | |
4219 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4220 | }; |
4221 | ||
4222 | ||
4223 | ||
4224 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4225 | /* |
4226 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4227 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4228 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4229 | * |
4230 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4231 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4232 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4233 | * that it ends at c->nl; these two cases can be distinguished by | |
4234 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4235 | * _unread() and _flush() calls. | |
4236 | * It only matters for read operations. | |
66ecd56b NIS |
4237 | */ |
4238 | ||
14a5cf38 | 4239 | typedef struct { |
22569500 NIS |
4240 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4241 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4242 | * buffer */ |
99efab12 NIS |
4243 | } PerlIOCrlf; |
4244 | ||
ff1e3883 JD |
4245 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4246 | * Otherwise the :crlf layer would always revert back to | |
4247 | * raw mode. | |
4248 | */ | |
4249 | static void | |
4250 | S_inherit_utf8_flag(PerlIO *f) | |
4251 | { | |
4252 | PerlIO *g = PerlIONext(f); | |
4253 | if (PerlIOValid(g)) { | |
4254 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { | |
4255 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4256 | } | |
4257 | } | |
4258 | } | |
4259 | ||
f5b9d040 | 4260 | IV |
2dc2558e | 4261 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4262 | { |
14a5cf38 JH |
4263 | IV code; |
4264 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4265 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4266 | #if 0 |
14a5cf38 JH |
4267 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
4268 | f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", | |
4269 | PerlIOBase(f)->flags); | |
5e2ab84b | 4270 | #endif |
8229d19f JH |
4271 | { |
4272 | /* Enable the first CRLF capable layer you can find, but if none | |
4273 | * found, the one we just pushed is fine. This results in at | |
4274 | * any given moment at most one CRLF-capable layer being enabled | |
4275 | * in the whole layer stack. */ | |
4276 | PerlIO *g = PerlIONext(f); | |
ff1e3883 | 4277 | while (PerlIOValid(g)) { |
8229d19f JH |
4278 | PerlIOl *b = PerlIOBase(g); |
4279 | if (b && b->tab == &PerlIO_crlf) { | |
4280 | if (!(b->flags & PERLIO_F_CRLF)) | |
4281 | b->flags |= PERLIO_F_CRLF; | |
ff1e3883 | 4282 | S_inherit_utf8_flag(g); |
8229d19f JH |
4283 | PerlIO_pop(aTHX_ f); |
4284 | return code; | |
4285 | } | |
4286 | g = PerlIONext(g); | |
4287 | } | |
4288 | } | |
ff1e3883 | 4289 | S_inherit_utf8_flag(f); |
14a5cf38 | 4290 | return code; |
f5b9d040 NIS |
4291 | } |
4292 | ||
4293 | ||
99efab12 | 4294 | SSize_t |
f62ce20a | 4295 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4296 | { |
dcda55fc | 4297 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4298 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4299 | *(c->nl) = 0xd; |
4300 | c->nl = NULL; | |
4301 | } | |
4302 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4303 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4304 | else { |
4305 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4306 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4307 | SSize_t unread = 0; | |
4308 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4309 | PerlIO_flush(f); | |
4310 | if (!b->buf) | |
4311 | PerlIO_get_base(f); | |
4312 | if (b->buf) { | |
4313 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4314 | b->end = b->ptr = b->buf + b->bufsiz; | |
4315 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4316 | b->posn -= b->bufsiz; | |
4317 | } | |
4318 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4319 | const int ch = *--buf; |
14a5cf38 JH |
4320 | if (ch == '\n') { |
4321 | if (b->ptr - 2 >= b->buf) { | |
4322 | *--(b->ptr) = 0xa; | |
4323 | *--(b->ptr) = 0xd; | |
4324 | unread++; | |
4325 | count--; | |
4326 | } | |
4327 | else { | |
93c2c2ec IZ |
4328 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4329 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4330 | unread++; | |
4331 | count--; | |
14a5cf38 JH |
4332 | } |
4333 | } | |
4334 | else { | |
4335 | *--(b->ptr) = ch; | |
4336 | unread++; | |
4337 | count--; | |
4338 | } | |
4339 | } | |
4340 | } | |
4341 | return unread; | |
4342 | } | |
99efab12 NIS |
4343 | } |
4344 | ||
93c2c2ec | 4345 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4346 | SSize_t |
f62ce20a | 4347 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4348 | { |
dcda55fc | 4349 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4350 | if (!b->buf) |
4351 | PerlIO_get_base(f); | |
4352 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4353 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4354 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4355 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4356 | scan: |
4357 | while (nl < b->end && *nl != 0xd) | |
4358 | nl++; | |
4359 | if (nl < b->end && *nl == 0xd) { | |
4360 | test: | |
4361 | if (nl + 1 < b->end) { | |
4362 | if (nl[1] == 0xa) { | |
4363 | *nl = '\n'; | |
4364 | c->nl = nl; | |
4365 | } | |
4366 | else { | |
4367 | /* | |
71200d45 | 4368 | * Not CR,LF but just CR |
14a5cf38 JH |
4369 | */ |
4370 | nl++; | |
4371 | goto scan; | |
4372 | } | |
4373 | } | |
4374 | else { | |
4375 | /* | |
71200d45 | 4376 | * Blast - found CR as last char in buffer |
14a5cf38 | 4377 | */ |
e87a358a | 4378 | |
14a5cf38 JH |
4379 | if (b->ptr < nl) { |
4380 | /* | |
4381 | * They may not care, defer work as long as | |
71200d45 | 4382 | * possible |
14a5cf38 | 4383 | */ |
a0d1d361 | 4384 | c->nl = nl; |
14a5cf38 JH |
4385 | return (nl - b->ptr); |
4386 | } | |
4387 | else { | |
4388 | int code; | |
22569500 | 4389 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4390 | * flush() is concerned */ |
22569500 | 4391 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4392 | /* Note as we have moved buf up flush's |
4393 | posn += ptr-buf | |
4394 | will naturally make posn point at CR | |
4395 | */ | |
22569500 NIS |
4396 | b->bufsiz--; /* Buffer is thus smaller */ |
4397 | code = PerlIO_fill(f); /* Fetch some more */ | |
4398 | b->bufsiz++; /* Restore size for next time */ | |
4399 | b->buf--; /* Point at space */ | |
4400 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4401 | * off */ |
22569500 | 4402 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4403 | if (code == 0) |
22569500 | 4404 | goto test; /* fill() call worked */ |
14a5cf38 | 4405 | /* |
71200d45 | 4406 | * CR at EOF - just fall through |
14a5cf38 | 4407 | */ |
a0d1d361 | 4408 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4409 | } |
4410 | } | |
4411 | } | |
4412 | } | |
4413 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4414 | } | |
4415 | return 0; | |
99efab12 NIS |
4416 | } |
4417 | ||
4418 | void | |
f62ce20a | 4419 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4420 | { |
dcda55fc AL |
4421 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4422 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4423 | if (!b->buf) |
4424 | PerlIO_get_base(f); | |
4425 | if (!ptr) { | |
a0d1d361 | 4426 | if (c->nl) { |
14a5cf38 | 4427 | ptr = c->nl + 1; |
22569500 | 4428 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4429 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4430 | ptr--; |
4431 | } | |
4432 | } | |
14a5cf38 JH |
4433 | else { |
4434 | ptr = b->end; | |
14a5cf38 JH |
4435 | } |
4436 | ptr -= cnt; | |
4437 | } | |
4438 | else { | |
6f207bd3 | 4439 | NOOP; |
3b4bd3fd | 4440 | #if 0 |
14a5cf38 | 4441 | /* |
71200d45 | 4442 | * Test code - delete when it works ... |
14a5cf38 | 4443 | */ |
3b4bd3fd | 4444 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4445 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4446 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4447 | /* Defered CR at end of buffer case - we lied about count */ |
4448 | chk--; | |
22569500 | 4449 | } |
14a5cf38 JH |
4450 | chk -= cnt; |
4451 | ||
a0d1d361 | 4452 | if (ptr != chk ) { |
99ef548b | 4453 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
14a5cf38 JH |
4454 | " nl=%p e=%p for %d", ptr, chk, flags, c->nl, |
4455 | b->end, cnt); | |
4456 | } | |
99ef548b | 4457 | #endif |
14a5cf38 JH |
4458 | } |
4459 | if (c->nl) { | |
4460 | if (ptr > c->nl) { | |
4461 | /* | |
71200d45 | 4462 | * They have taken what we lied about |
14a5cf38 JH |
4463 | */ |
4464 | *(c->nl) = 0xd; | |
4465 | c->nl = NULL; | |
4466 | ptr++; | |
4467 | } | |
4468 | } | |
4469 | b->ptr = ptr; | |
4470 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4471 | } |
4472 | ||
4473 | SSize_t | |
f62ce20a | 4474 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4475 | { |
14a5cf38 | 4476 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4477 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4478 | else { |
dcda55fc | 4479 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4480 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4481 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4482 | if (!b->buf) |
4483 | PerlIO_get_base(f); | |
4484 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4485 | return 0; | |
4486 | while (buf < ebuf) { | |
dcda55fc | 4487 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4488 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4489 | while (buf < ebuf && b->ptr < eptr) { | |
4490 | if (*buf == '\n') { | |
4491 | if ((b->ptr + 2) > eptr) { | |
4492 | /* | |
71200d45 | 4493 | * Not room for both |
14a5cf38 JH |
4494 | */ |
4495 | PerlIO_flush(f); | |
4496 | break; | |
4497 | } | |
4498 | else { | |
22569500 NIS |
4499 | *(b->ptr)++ = 0xd; /* CR */ |
4500 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4501 | buf++; |
4502 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4503 | PerlIO_flush(f); | |
4504 | break; | |
4505 | } | |
4506 | } | |
4507 | } | |
4508 | else { | |
dcda55fc | 4509 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4510 | } |
4511 | if (b->ptr >= eptr) { | |
4512 | PerlIO_flush(f); | |
4513 | break; | |
4514 | } | |
4515 | } | |
4516 | } | |
4517 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4518 | PerlIO_flush(f); | |
4519 | return (buf - (STDCHAR *) vbuf); | |
4520 | } | |
99efab12 NIS |
4521 | } |
4522 | ||
4523 | IV | |
f62ce20a | 4524 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4525 | { |
dcda55fc | 4526 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4527 | if (c->nl) { |
4528 | *(c->nl) = 0xd; | |
4529 | c->nl = NULL; | |
4530 | } | |
f62ce20a | 4531 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4532 | } |
4533 | ||
86e05cf2 NIS |
4534 | IV |
4535 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4536 | { | |
4537 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4538 | /* In text mode - flush any pending stuff and flip it */ | |
4539 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4540 | #ifndef PERLIO_USING_CRLF | |
4541 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
4542 | if (PerlIOBase(f)->tab == &PerlIO_crlf) { | |
4543 | PerlIO_pop(aTHX_ f); | |
4544 | } | |
4545 | #endif | |
4546 | } | |
4547 | return 0; | |
4548 | } | |
4549 | ||
27da23d5 | 4550 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4551 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4552 | "crlf", |
4553 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4554 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4555 | PerlIOCrlf_pushed, |
44798d05 | 4556 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4557 | PerlIOBuf_open, |
86e05cf2 | 4558 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4559 | NULL, |
4560 | PerlIOBase_fileno, | |
71200d45 | 4561 | PerlIOBuf_dup, |
de009b76 | 4562 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4563 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4564 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4565 | PerlIOBuf_seek, |
4566 | PerlIOBuf_tell, | |
4567 | PerlIOBuf_close, | |
4568 | PerlIOCrlf_flush, | |
4569 | PerlIOBuf_fill, | |
4570 | PerlIOBase_eof, | |
4571 | PerlIOBase_error, | |
4572 | PerlIOBase_clearerr, | |
4573 | PerlIOBase_setlinebuf, | |
4574 | PerlIOBuf_get_base, | |
4575 | PerlIOBuf_bufsiz, | |
4576 | PerlIOBuf_get_ptr, | |
4577 | PerlIOCrlf_get_cnt, | |
4578 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4579 | }; |
4580 | ||
06da4f11 NIS |
4581 | #ifdef HAS_MMAP |
4582 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4583 | /* |
71200d45 | 4584 | * mmap as "buffer" layer |
14a5cf38 | 4585 | */ |
06da4f11 | 4586 | |
14a5cf38 | 4587 | typedef struct { |
22569500 NIS |
4588 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4589 | Mmap_t mptr; /* Mapped address */ | |
4590 | Size_t len; /* mapped length */ | |
4591 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4592 | } PerlIOMmap; |
4593 | ||
4594 | IV | |
f62ce20a | 4595 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4596 | { |
27da23d5 | 4597 | dVAR; |
de009b76 AL |
4598 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4599 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4600 | IV code = 0; |
4601 | if (m->len) | |
4602 | abort(); | |
4603 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4604 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4605 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4606 | Stat_t st; |
4607 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4608 | if (code == 0 && S_ISREG(st.st_mode)) { |
4609 | SSize_t len = st.st_size - b->posn; | |
4610 | if (len > 0) { | |
4611 | Off_t posn; | |
27da23d5 JH |
4612 | if (PL_mmap_page_size <= 0) |
4613 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4614 | PL_mmap_page_size); | |
14a5cf38 JH |
4615 | if (b->posn < 0) { |
4616 | /* | |
4617 | * This is a hack - should never happen - open should | |
71200d45 | 4618 | * have set it ! |
14a5cf38 JH |
4619 | */ |
4620 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4621 | } | |
27da23d5 | 4622 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 JH |
4623 | len = st.st_size - posn; |
4624 | m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); | |
4625 | if (m->mptr && m->mptr != (Mmap_t) - 1) { | |
a5262162 | 4626 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4627 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4628 | #endif |
a5262162 | 4629 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4630 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4631 | #endif |
14a5cf38 JH |
4632 | PerlIOBase(f)->flags = |
4633 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4634 | b->end = ((STDCHAR *) m->mptr) + len; | |
4635 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4636 | b->ptr = b->buf; | |
4637 | m->len = len; | |
4638 | } | |
4639 | else { | |
4640 | b->buf = NULL; | |
4641 | } | |
4642 | } | |
4643 | else { | |
4644 | PerlIOBase(f)->flags = | |
4645 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4646 | b->buf = NULL; | |
4647 | b->ptr = b->end = b->ptr; | |
4648 | code = -1; | |
4649 | } | |
4650 | } | |
4651 | } | |
4652 | return code; | |
06da4f11 NIS |
4653 | } |
4654 | ||
4655 | IV | |
e87a358a | 4656 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4657 | { |
dcda55fc | 4658 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4659 | IV code = 0; |
4660 | if (m->len) { | |
dcda55fc | 4661 | PerlIOBuf * const b = &m->base; |
14a5cf38 | 4662 | if (b->buf) { |
1ccb7c8d JH |
4663 | /* The munmap address argument is tricky: depending on the |
4664 | * standard it is either "void *" or "caddr_t" (which is | |
4665 | * usually "char *" (signed or unsigned). If we cast it | |
4666 | * to "void *", those that have it caddr_t and an uptight | |
4667 | * C++ compiler, will freak out. But casting it as char* | |
4668 | * should work. Maybe. (Using Mmap_t figured out by | |
4669 | * Configure doesn't always work, apparently.) */ | |
4670 | code = munmap((char*)m->mptr, m->len); | |
14a5cf38 JH |
4671 | b->buf = NULL; |
4672 | m->len = 0; | |
4673 | m->mptr = NULL; | |
4674 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4675 | code = -1; | |
4676 | } | |
4677 | b->ptr = b->end = b->buf; | |
4678 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4679 | } | |
4680 | return code; | |
06da4f11 NIS |
4681 | } |
4682 | ||
4683 | STDCHAR * | |
f62ce20a | 4684 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4685 | { |
dcda55fc AL |
4686 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4687 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4688 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4689 | /* | |
71200d45 | 4690 | * Already have a readbuffer in progress |
14a5cf38 JH |
4691 | */ |
4692 | return b->buf; | |
4693 | } | |
4694 | if (b->buf) { | |
4695 | /* | |
71200d45 | 4696 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4697 | */ |
22569500 NIS |
4698 | m->bbuf = b->buf; /* save it in case we need it again */ |
4699 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4700 | } |
4701 | if (!b->buf) { | |
22569500 | 4702 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4703 | if (!b->buf) { |
4704 | /* | |
71200d45 | 4705 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4706 | */ |
4707 | b->buf = m->bbuf; | |
4708 | } | |
4709 | } | |
4710 | b->ptr = b->end = b->buf; | |
4711 | if (b->buf) | |
4712 | return b->buf; | |
f62ce20a | 4713 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4714 | } |
4715 | ||
4716 | SSize_t | |
f62ce20a | 4717 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4718 | { |
dcda55fc AL |
4719 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4720 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4721 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4722 | PerlIO_flush(f); | |
4723 | if (b->ptr && (b->ptr - count) >= b->buf | |
4724 | && memEQ(b->ptr - count, vbuf, count)) { | |
4725 | b->ptr -= count; | |
4726 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4727 | return count; | |
4728 | } | |
4729 | if (m->len) { | |
4730 | /* | |
71200d45 | 4731 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4732 | */ |
4733 | PerlIO_flush(f); | |
4734 | /* | |
71200d45 | 4735 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4736 | */ |
4737 | if (!b->buf && m->bbuf) | |
4738 | b->buf = m->bbuf; | |
4739 | if (!b->buf) { | |
f62ce20a | 4740 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4741 | m->bbuf = b->buf; |
4742 | } | |
4743 | } | |
f62ce20a | 4744 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4745 | } |
4746 | ||
4747 | SSize_t | |
f62ce20a | 4748 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4749 | { |
de009b76 AL |
4750 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4751 | PerlIOBuf * const b = &m->base; | |
4752 | ||
14a5cf38 JH |
4753 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4754 | /* | |
71200d45 | 4755 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4756 | */ |
4757 | if (m->len) { | |
e87a358a | 4758 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4759 | return 0; |
4760 | } | |
4761 | /* | |
71200d45 | 4762 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4763 | */ |
4764 | if (!b->buf && m->bbuf) | |
4765 | b->buf = m->bbuf; | |
4766 | if (!b->buf) { | |
f62ce20a | 4767 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4768 | m->bbuf = b->buf; |
4769 | } | |
06da4f11 | 4770 | } |
f62ce20a | 4771 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4772 | } |
4773 | ||
4774 | IV | |
f62ce20a | 4775 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4776 | { |
dcda55fc AL |
4777 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4778 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4779 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4780 | /* |
71200d45 | 4781 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4782 | */ |
4783 | if (b->buf) { | |
4784 | if (m->len) { | |
4785 | /* | |
71200d45 | 4786 | * Unmap the buffer |
14a5cf38 | 4787 | */ |
e87a358a | 4788 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4789 | code = -1; |
4790 | } | |
4791 | else { | |
4792 | /* | |
4793 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4794 | * remember it in case we need one later |
14a5cf38 JH |
4795 | */ |
4796 | m->bbuf = b->buf; | |
4797 | } | |
4798 | } | |
4799 | return code; | |
06da4f11 NIS |
4800 | } |
4801 | ||
4802 | IV | |
f62ce20a | 4803 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4804 | { |
dcda55fc | 4805 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4806 | IV code = PerlIO_flush(f); |
4807 | if (code == 0 && !b->buf) { | |
f62ce20a | 4808 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4809 | } |
4810 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4811 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4812 | } |
4813 | return code; | |
06da4f11 NIS |
4814 | } |
4815 | ||
4816 | IV | |
f62ce20a | 4817 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4818 | { |
dcda55fc AL |
4819 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4820 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4821 | IV code = PerlIO_flush(f); |
4822 | if (m->bbuf) { | |
4823 | b->buf = m->bbuf; | |
4824 | m->bbuf = NULL; | |
4825 | b->ptr = b->end = b->buf; | |
4826 | } | |
f62ce20a | 4827 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4828 | code = -1; |
4829 | return code; | |
06da4f11 NIS |
4830 | } |
4831 | ||
71200d45 | 4832 | PerlIO * |
ecdeb87c | 4833 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4834 | { |
ecdeb87c | 4835 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4836 | } |
4837 | ||
06da4f11 | 4838 | |
27da23d5 | 4839 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4840 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4841 | "mmap", |
4842 | sizeof(PerlIOMmap), | |
86e05cf2 | 4843 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4844 | PerlIOBuf_pushed, |
44798d05 | 4845 | PerlIOBuf_popped, |
14a5cf38 | 4846 | PerlIOBuf_open, |
86e05cf2 | 4847 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4848 | NULL, |
4849 | PerlIOBase_fileno, | |
71200d45 | 4850 | PerlIOMmap_dup, |
14a5cf38 JH |
4851 | PerlIOBuf_read, |
4852 | PerlIOMmap_unread, | |
4853 | PerlIOMmap_write, | |
4854 | PerlIOBuf_seek, | |
4855 | PerlIOBuf_tell, | |
4856 | PerlIOBuf_close, | |
4857 | PerlIOMmap_flush, | |
4858 | PerlIOMmap_fill, | |
4859 | PerlIOBase_eof, | |
4860 | PerlIOBase_error, | |
4861 | PerlIOBase_clearerr, | |
4862 | PerlIOBase_setlinebuf, | |
4863 | PerlIOMmap_get_base, | |
4864 | PerlIOBuf_bufsiz, | |
4865 | PerlIOBuf_get_ptr, | |
4866 | PerlIOBuf_get_cnt, | |
4867 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4868 | }; |
4869 | ||
22569500 | 4870 | #endif /* HAS_MMAP */ |
06da4f11 | 4871 | |
9e353e3b | 4872 | PerlIO * |
e87a358a | 4873 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4874 | { |
97aff369 | 4875 | dVAR; |
a1ea730d | 4876 | if (!PL_perlio) { |
14a5cf38 JH |
4877 | PerlIO_stdstreams(aTHX); |
4878 | } | |
a1ea730d | 4879 | return &PL_perlio[1]; |
9e353e3b NIS |
4880 | } |
4881 | ||
9e353e3b | 4882 | PerlIO * |
e87a358a | 4883 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4884 | { |
97aff369 | 4885 | dVAR; |
a1ea730d | 4886 | if (!PL_perlio) { |
14a5cf38 JH |
4887 | PerlIO_stdstreams(aTHX); |
4888 | } | |
a1ea730d | 4889 | return &PL_perlio[2]; |
9e353e3b NIS |
4890 | } |
4891 | ||
9e353e3b | 4892 | PerlIO * |
e87a358a | 4893 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4894 | { |
97aff369 | 4895 | dVAR; |
a1ea730d | 4896 | if (!PL_perlio) { |
14a5cf38 JH |
4897 | PerlIO_stdstreams(aTHX); |
4898 | } | |
a1ea730d | 4899 | return &PL_perlio[3]; |
9e353e3b NIS |
4900 | } |
4901 | ||
4902 | /*--------------------------------------------------------------------------------------*/ | |
4903 | ||
9e353e3b NIS |
4904 | char * |
4905 | PerlIO_getname(PerlIO *f, char *buf) | |
4906 | { | |
14a5cf38 | 4907 | dTHX; |
a15cef0c | 4908 | #ifdef VMS |
73d840c0 | 4909 | char *name = NULL; |
7659f319 | 4910 | bool exported = FALSE; |
14a5cf38 | 4911 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4912 | if (!stdio) { |
4913 | stdio = PerlIO_exportFILE(f,0); | |
4914 | exported = TRUE; | |
4915 | } | |
4916 | if (stdio) { | |
14a5cf38 | 4917 | name = fgetname(stdio, buf); |
7659f319 CB |
4918 | if (exported) PerlIO_releaseFILE(f,stdio); |
4919 | } | |
73d840c0 | 4920 | return name; |
a15cef0c | 4921 | #else |
8772537c AL |
4922 | PERL_UNUSED_ARG(f); |
4923 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 4924 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 4925 | return NULL; |
a15cef0c | 4926 | #endif |
9e353e3b NIS |
4927 | } |
4928 | ||
4929 | ||
4930 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4931 | /* |
4932 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4933 | * terms of above |
14a5cf38 | 4934 | */ |
9e353e3b | 4935 | |
e87a358a NIS |
4936 | #undef PerlIO_fdopen |
4937 | PerlIO * | |
4938 | PerlIO_fdopen(int fd, const char *mode) | |
4939 | { | |
4940 | dTHX; | |
bd61b366 | 4941 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4942 | } |
4943 | ||
4944 | #undef PerlIO_open | |
4945 | PerlIO * | |
4946 | PerlIO_open(const char *path, const char *mode) | |
4947 | { | |
4948 | dTHX; | |
42d9b98d | 4949 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4950 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4951 | } |
4952 | ||
4953 | #undef Perlio_reopen | |
4954 | PerlIO * | |
4955 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4956 | { | |
4957 | dTHX; | |
42d9b98d | 4958 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4959 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4960 | } |
4961 | ||
9e353e3b | 4962 | #undef PerlIO_getc |
6f9d8c32 | 4963 | int |
9e353e3b | 4964 | PerlIO_getc(PerlIO *f) |
760ac839 | 4965 | { |
e87a358a | 4966 | dTHX; |
14a5cf38 | 4967 | STDCHAR buf[1]; |
de009b76 | 4968 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4969 | return (unsigned char) buf[0]; |
4970 | } | |
4971 | return EOF; | |
313ca112 NIS |
4972 | } |
4973 | ||
4974 | #undef PerlIO_ungetc | |
4975 | int | |
4976 | PerlIO_ungetc(PerlIO *f, int ch) | |
4977 | { | |
e87a358a | 4978 | dTHX; |
14a5cf38 JH |
4979 | if (ch != EOF) { |
4980 | STDCHAR buf = ch; | |
4981 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4982 | return ch; | |
4983 | } | |
4984 | return EOF; | |
760ac839 LW |
4985 | } |
4986 | ||
9e353e3b NIS |
4987 | #undef PerlIO_putc |
4988 | int | |
4989 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4990 | { |
e87a358a | 4991 | dTHX; |
14a5cf38 JH |
4992 | STDCHAR buf = ch; |
4993 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4994 | } |
4995 | ||
9e353e3b | 4996 | #undef PerlIO_puts |
760ac839 | 4997 | int |
9e353e3b | 4998 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4999 | { |
e87a358a | 5000 | dTHX; |
dcda55fc | 5001 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
5002 | } |
5003 | ||
5004 | #undef PerlIO_rewind | |
5005 | void | |
c78749f2 | 5006 | PerlIO_rewind(PerlIO *f) |
760ac839 | 5007 | { |
e87a358a | 5008 | dTHX; |
14a5cf38 JH |
5009 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
5010 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
5011 | } |
5012 | ||
5013 | #undef PerlIO_vprintf | |
5014 | int | |
5015 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
5016 | { | |
14a5cf38 | 5017 | dTHX; |
396482e1 | 5018 | SV * const sv = newSVpvs(""); |
b83604b4 | 5019 | const char *s; |
14a5cf38 JH |
5020 | STRLEN len; |
5021 | SSize_t wrote; | |
2cc61e15 | 5022 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
5023 | va_list apc; |
5024 | Perl_va_copy(ap, apc); | |
5025 | sv_vcatpvf(sv, fmt, &apc); | |
2cc61e15 | 5026 | #else |
14a5cf38 | 5027 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 | 5028 | #endif |
b83604b4 | 5029 | s = SvPV_const(sv, len); |
14a5cf38 JH |
5030 | wrote = PerlIO_write(f, s, len); |
5031 | SvREFCNT_dec(sv); | |
5032 | return wrote; | |
760ac839 LW |
5033 | } |
5034 | ||
5035 | #undef PerlIO_printf | |
6f9d8c32 | 5036 | int |
14a5cf38 | 5037 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 5038 | { |
14a5cf38 JH |
5039 | va_list ap; |
5040 | int result; | |
5041 | va_start(ap, fmt); | |
5042 | result = PerlIO_vprintf(f, fmt, ap); | |
5043 | va_end(ap); | |
5044 | return result; | |
760ac839 LW |
5045 | } |
5046 | ||
5047 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5048 | int |
14a5cf38 | 5049 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5050 | { |
e87a358a | 5051 | dTHX; |
14a5cf38 JH |
5052 | va_list ap; |
5053 | int result; | |
5054 | va_start(ap, fmt); | |
5055 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5056 | va_end(ap); | |
5057 | return result; | |
760ac839 LW |
5058 | } |
5059 | ||
5060 | #undef PerlIO_tmpfile | |
5061 | PerlIO * | |
c78749f2 | 5062 | PerlIO_tmpfile(void) |
760ac839 | 5063 | { |
2941a2e1 JH |
5064 | dTHX; |
5065 | PerlIO *f = NULL; | |
2941a2e1 | 5066 | #ifdef WIN32 |
de009b76 | 5067 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5068 | if (fd >= 0) |
5069 | f = PerlIO_fdopen(fd, "w+b"); | |
5070 | #else /* WIN32 */ | |
460c8493 | 5071 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
396482e1 | 5072 | SV * const sv = newSVpvs("/tmp/PerlIO_XXXXXX"); |
2941a2e1 JH |
5073 | /* |
5074 | * I have no idea how portable mkstemp() is ... NI-S | |
5075 | */ | |
de009b76 | 5076 | const int fd = mkstemp(SvPVX(sv)); |
2941a2e1 JH |
5077 | if (fd >= 0) { |
5078 | f = PerlIO_fdopen(fd, "w+"); | |
5079 | if (f) | |
5080 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
b15aece3 | 5081 | PerlLIO_unlink(SvPVX_const(sv)); |
2941a2e1 JH |
5082 | SvREFCNT_dec(sv); |
5083 | } | |
5084 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ | |
c4420975 | 5085 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 JH |
5086 | |
5087 | if (stdio) { | |
5088 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), | |
27da23d5 | 5089 | PERLIO_FUNCS_CAST(&PerlIO_stdio), |
a0714e2c | 5090 | "w+", NULL))) { |
c4420975 | 5091 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
2941a2e1 JH |
5092 | |
5093 | if (s) | |
5094 | s->stdio = stdio; | |
5095 | } | |
5096 | } | |
5097 | # endif /* else HAS_MKSTEMP */ | |
5098 | #endif /* else WIN32 */ | |
5099 | return f; | |
760ac839 LW |
5100 | } |
5101 | ||
6f9d8c32 NIS |
5102 | #undef HAS_FSETPOS |
5103 | #undef HAS_FGETPOS | |
5104 | ||
22569500 NIS |
5105 | #endif /* USE_SFIO */ |
5106 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5107 | |
9e353e3b | 5108 | /*======================================================================================*/ |
14a5cf38 | 5109 | /* |
71200d45 NIS |
5110 | * Now some functions in terms of above which may be needed even if we are |
5111 | * not in true PerlIO mode | |
9e353e3b | 5112 | */ |
188f0c84 YO |
5113 | const char * |
5114 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5115 | { | |
5116 | dVAR; | |
5117 | const char *type = NULL; | |
5118 | /* | |
5119 | * Need to supply default layer info from open.pm | |
5120 | */ | |
5121 | if (PL_curcop && PL_curcop->cop_hints & HINT_LEXICAL_IO) { | |
5122 | SV * const layers | |
5123 | = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, 0, | |
5124 | "open", 4, 0, 0); | |
5125 | assert(layers); | |
5126 | if (SvOK(layers)) { | |
5127 | STRLEN len; | |
5128 | type = SvPV_const(layers, len); | |
5129 | if (type && mode && mode[0] != 'r') { | |
5130 | /* | |
5131 | * Skip to write part, which is separated by a '\0' | |
5132 | */ | |
5133 | STRLEN read_len = strlen(type); | |
5134 | if (read_len < len) { | |
5135 | type += read_len + 1; | |
5136 | } | |
5137 | } | |
5138 | } | |
5139 | } | |
5140 | return type; | |
5141 | } | |
5142 | ||
9e353e3b | 5143 | |
760ac839 LW |
5144 | #ifndef HAS_FSETPOS |
5145 | #undef PerlIO_setpos | |
5146 | int | |
766a733e | 5147 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5148 | { |
14a5cf38 JH |
5149 | dTHX; |
5150 | if (SvOK(pos)) { | |
5151 | STRLEN len; | |
c4420975 | 5152 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5153 | if (f && len == sizeof(Off_t)) |
5154 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5155 | } | |
93189314 | 5156 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5157 | return -1; |
760ac839 | 5158 | } |
c411622e | 5159 | #else |
c411622e | 5160 | #undef PerlIO_setpos |
5161 | int | |
766a733e | 5162 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5163 | { |
14a5cf38 JH |
5164 | dTHX; |
5165 | if (SvOK(pos)) { | |
5166 | STRLEN len; | |
c4420975 | 5167 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5168 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5169 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5170 | return fsetpos64(f, fpos); |
d9b3e12d | 5171 | #else |
14a5cf38 | 5172 | return fsetpos(f, fpos); |
d9b3e12d | 5173 | #endif |
14a5cf38 | 5174 | } |
766a733e | 5175 | } |
93189314 | 5176 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5177 | return -1; |
c411622e | 5178 | } |
5179 | #endif | |
760ac839 LW |
5180 | |
5181 | #ifndef HAS_FGETPOS | |
5182 | #undef PerlIO_getpos | |
5183 | int | |
766a733e | 5184 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5185 | { |
14a5cf38 JH |
5186 | dTHX; |
5187 | Off_t posn = PerlIO_tell(f); | |
5188 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5189 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5190 | } |
c411622e | 5191 | #else |
c411622e | 5192 | #undef PerlIO_getpos |
5193 | int | |
766a733e | 5194 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5195 | { |
14a5cf38 JH |
5196 | dTHX; |
5197 | Fpos_t fpos; | |
5198 | int code; | |
2d4389e4 | 5199 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5200 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5201 | #else |
14a5cf38 | 5202 | code = fgetpos(f, &fpos); |
d9b3e12d | 5203 | #endif |
14a5cf38 JH |
5204 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5205 | return code; | |
c411622e | 5206 | } |
5207 | #endif | |
760ac839 LW |
5208 | |
5209 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5210 | ||
5211 | int | |
c78749f2 | 5212 | vprintf(char *pat, char *args) |
662a7e3f CS |
5213 | { |
5214 | _doprnt(pat, args, stdout); | |
22569500 | 5215 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5216 | * value */ |
662a7e3f CS |
5217 | } |
5218 | ||
5219 | int | |
c78749f2 | 5220 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5221 | { |
5222 | _doprnt(pat, args, fd); | |
22569500 | 5223 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5224 | * value */ |
760ac839 LW |
5225 | } |
5226 | ||
5227 | #endif | |
5228 | ||
5229 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5230 | int |
8ac85365 | 5231 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5232 | { |
8ff9a42b | 5233 | dTHX; |
d9fad198 | 5234 | const int val = my_vsnprintf(s, n > 0 ? n : 0, fmt, ap); |
14333449 AL |
5235 | PERL_UNUSED_CONTEXT; |
5236 | ||
1208b3dd JH |
5237 | #ifndef PERL_MY_VSNPRINTF_GUARDED |
5238 | if (val < 0 || (n > 0 ? val >= n : 0)) { | |
37405f90 | 5239 | Perl_croak(aTHX_ "panic: my_vsnprintf overflow in PerlIO_vsprintf\n"); |
760ac839 | 5240 | } |
1208b3dd | 5241 | #endif |
14a5cf38 | 5242 | return val; |
760ac839 LW |
5243 | } |
5244 | #endif | |
5245 | ||
5246 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5247 | int |
14a5cf38 | 5248 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5249 | { |
14a5cf38 JH |
5250 | va_list ap; |
5251 | int result; | |
5252 | va_start(ap, fmt); | |
5253 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5254 | va_end(ap); | |
5255 | return result; | |
760ac839 LW |
5256 | } |
5257 | #endif | |
9cfa90c0 NC |
5258 | |
5259 | /* | |
5260 | * Local variables: | |
5261 | * c-indentation-style: bsd | |
5262 | * c-basic-offset: 4 | |
5263 | * indent-tabs-mode: t | |
5264 | * End: | |
5265 | * | |
37442d52 RGS |
5266 | * ex: set ts=8 sts=4 sw=4 noet: |
5267 | */ |