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 | |
33 | # include "config.h" | |
34 | #endif | |
760ac839 | 35 | |
6f9d8c32 | 36 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 37 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
14a5cf38 | 38 | /* |
71200d45 | 39 | * #define PerlIO FILE |
14a5cf38 | 40 | */ |
760ac839 LW |
41 | #endif |
42 | /* | |
6f9d8c32 | 43 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 44 | * which are not #defined in perlio.h. |
6f9d8c32 | 45 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
46 | */ |
47 | ||
48 | #include "EXTERN.h" | |
864dbfa3 | 49 | #define PERL_IN_PERLIO_C |
760ac839 LW |
50 | #include "perl.h" |
51 | ||
32af7c23 CL |
52 | #ifdef PERL_IMPLICIT_CONTEXT |
53 | #undef dSYS | |
54 | #define dSYS dTHX | |
55 | #endif | |
56 | ||
0c4f7ff0 NIS |
57 | #include "XSUB.h" |
58 | ||
9cffb111 OS |
59 | #ifdef __Lynx__ |
60 | /* Missing proto on LynxOS */ | |
61 | int mkstemp(char*); | |
62 | #endif | |
63 | ||
1b7a0411 | 64 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 65 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 66 | if (PerlIOValid(f)) { \ |
46c461b5 | 67 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
68 | if (tab && tab->callback) \ |
69 | return (*tab->callback) args; \ | |
70 | else \ | |
71 | return PerlIOBase_ ## base args; \ | |
72 | } \ | |
73 | else \ | |
74 | SETERRNO(EBADF, SS_IVCHAN); \ | |
75 | return failure | |
76 | ||
77 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 78 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 79 | if (PerlIOValid(f)) { \ |
46c461b5 | 80 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
81 | if (tab && tab->callback) \ |
82 | return (*tab->callback) args; \ | |
83 | SETERRNO(EINVAL, LIB_INVARG); \ | |
84 | } \ | |
85 | else \ | |
86 | SETERRNO(EBADF, SS_IVCHAN); \ | |
87 | return failure | |
88 | ||
89 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 90 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 91 | if (PerlIOValid(f)) { \ |
46c461b5 | 92 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
93 | if (tab && tab->callback) \ |
94 | (*tab->callback) args; \ | |
95 | else \ | |
96 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
97 | } \ |
98 | else \ | |
99 | SETERRNO(EBADF, SS_IVCHAN) | |
100 | ||
101 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 102 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 103 | if (PerlIOValid(f)) { \ |
46c461b5 | 104 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
105 | if (tab && tab->callback) \ |
106 | (*tab->callback) args; \ | |
37725cdc NIS |
107 | else \ |
108 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
109 | } \ |
110 | else \ | |
111 | SETERRNO(EBADF, SS_IVCHAN) | |
112 | ||
71ab4674 SP |
113 | #ifndef USE_SFIO |
114 | int | |
115 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
116 | { | |
117 | /* | |
118 | * This used to be contents of do_binmode in doio.c | |
119 | */ | |
120 | #ifdef DOSISH | |
121 | # if defined(atarist) || defined(__MINT__) | |
122 | if (!fflush(fp)) { | |
123 | if (mode & O_BINARY) | |
124 | ((FILE *) fp)->_flag |= _IOBIN; | |
125 | else | |
126 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
127 | return 1; | |
128 | } | |
129 | return 0; | |
130 | # else | |
131 | dTHX; | |
132 | #ifdef NETWARE | |
133 | if (PerlLIO_setmode(fp, mode) != -1) { | |
134 | #else | |
135 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
136 | #endif | |
137 | # if defined(WIN32) && defined(__BORLANDC__) | |
138 | /* | |
139 | * The translation mode of the stream is maintained independent | |
140 | of | |
141 | * the translation mode of the fd in the Borland RTL (heavy | |
142 | * digging through their runtime sources reveal). User has to | |
143 | set | |
144 | * the mode explicitly for the stream (though they don't | |
145 | document | |
146 | * this anywhere). GSAR 97-5-24 | |
147 | */ | |
148 | fseek(fp, 0L, 0); | |
149 | if (mode & O_BINARY) | |
150 | fp->flags |= _F_BIN; | |
151 | else | |
152 | fp->flags &= ~_F_BIN; | |
153 | # endif | |
154 | return 1; | |
155 | } | |
156 | else | |
157 | return 0; | |
158 | # endif | |
159 | #else | |
160 | # if defined(USEMYBINMODE) | |
161 | dTHX; | |
162 | if (my_binmode(fp, iotype, mode) != FALSE) | |
163 | return 1; | |
164 | else | |
165 | return 0; | |
166 | # else | |
167 | PERL_UNUSED_ARG(fp); | |
168 | PERL_UNUSED_ARG(iotype); | |
169 | PERL_UNUSED_ARG(mode); | |
170 | return 1; | |
171 | # endif | |
172 | #endif | |
173 | } | |
174 | #endif /* sfio */ | |
175 | ||
06c7082d | 176 | #ifndef O_ACCMODE |
22569500 | 177 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
178 | #endif |
179 | ||
180 | int | |
181 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
182 | { | |
de009b76 | 183 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
184 | int ix = 0; |
185 | int ptype; | |
186 | switch (result) { | |
187 | case O_RDONLY: | |
188 | ptype = IoTYPE_RDONLY; | |
189 | break; | |
190 | case O_WRONLY: | |
191 | ptype = IoTYPE_WRONLY; | |
192 | break; | |
193 | case O_RDWR: | |
194 | default: | |
195 | ptype = IoTYPE_RDWR; | |
196 | break; | |
197 | } | |
198 | if (writing) | |
199 | *writing = (result != O_RDONLY); | |
200 | ||
201 | if (result == O_RDONLY) { | |
202 | mode[ix++] = 'r'; | |
203 | } | |
204 | #ifdef O_APPEND | |
205 | else if (rawmode & O_APPEND) { | |
206 | mode[ix++] = 'a'; | |
207 | if (result != O_WRONLY) | |
208 | mode[ix++] = '+'; | |
209 | } | |
210 | #endif | |
211 | else { | |
212 | if (result == O_WRONLY) | |
213 | mode[ix++] = 'w'; | |
214 | else { | |
215 | mode[ix++] = 'r'; | |
216 | mode[ix++] = '+'; | |
217 | } | |
218 | } | |
219 | if (rawmode & O_BINARY) | |
220 | mode[ix++] = 'b'; | |
221 | mode[ix] = '\0'; | |
222 | return ptype; | |
223 | } | |
224 | ||
eb73beca NIS |
225 | #ifndef PERLIO_LAYERS |
226 | int | |
227 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
228 | { | |
6874a2de NIS |
229 | if (!names || !*names |
230 | || strEQ(names, ":crlf") | |
231 | || strEQ(names, ":raw") | |
232 | || strEQ(names, ":bytes") | |
233 | ) { | |
14a5cf38 JH |
234 | return 0; |
235 | } | |
236 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
237 | /* | |
71200d45 | 238 | * NOTREACHED |
14a5cf38 JH |
239 | */ |
240 | return -1; | |
eb73beca NIS |
241 | } |
242 | ||
13621cfb NIS |
243 | void |
244 | PerlIO_destruct(pTHX) | |
245 | { | |
246 | } | |
247 | ||
f5b9d040 NIS |
248 | int |
249 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
250 | { | |
92bff44d | 251 | #ifdef USE_SFIO |
8772537c AL |
252 | PERL_UNUSED_ARG(iotype); |
253 | PERL_UNUSED_ARG(mode); | |
254 | PERL_UNUSED_ARG(names); | |
14a5cf38 | 255 | return 1; |
92bff44d | 256 | #else |
14a5cf38 | 257 | return perlsio_binmode(fp, iotype, mode); |
92bff44d | 258 | #endif |
f5b9d040 | 259 | } |
60382766 | 260 | |
e0fa5af2 | 261 | PerlIO * |
ecdeb87c | 262 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 263 | { |
a0fd4948 | 264 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
265 | return NULL; |
266 | #else | |
267 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 268 | return PerlSIO_fdupopen(f); |
0553478e | 269 | #else |
30753f56 NIS |
270 | #ifdef WIN32 |
271 | return win32_fdupopen(f); | |
272 | #else | |
e0fa5af2 | 273 | if (f) { |
504618e9 | 274 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 275 | if (fd >= 0) { |
06c7082d | 276 | char mode[8]; |
a5936e02 | 277 | #ifdef DJGPP |
dcda55fc AL |
278 | const int omode = djgpp_get_stream_mode(f); |
279 | #else | |
280 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 281 | #endif |
06c7082d | 282 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 283 | /* the r+ is a hack */ |
06c7082d | 284 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
285 | } |
286 | return NULL; | |
287 | } | |
288 | else { | |
93189314 | 289 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 290 | } |
7114a2d2 | 291 | #endif |
e0fa5af2 | 292 | return NULL; |
0553478e | 293 | #endif |
30753f56 | 294 | #endif |
e0fa5af2 NIS |
295 | } |
296 | ||
297 | ||
14a5cf38 | 298 | /* |
71200d45 | 299 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 300 | */ |
ee518936 NIS |
301 | |
302 | PerlIO * | |
14a5cf38 JH |
303 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
304 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
305 | { | |
7cf31beb NIS |
306 | if (narg) { |
307 | if (narg > 1) { | |
3b8752bb | 308 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 309 | } |
14a5cf38 JH |
310 | if (*args == &PL_sv_undef) |
311 | return PerlIO_tmpfile(); | |
312 | else { | |
e62f0680 | 313 | const char *name = SvPV_nolen_const(*args); |
3b6c1aba | 314 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
315 | fd = PerlLIO_open3(name, imode, perm); |
316 | if (fd >= 0) | |
de009b76 | 317 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
318 | } |
319 | else if (old) { | |
320 | return PerlIO_reopen(name, mode, old); | |
321 | } | |
322 | else { | |
323 | return PerlIO_open(name, mode); | |
324 | } | |
325 | } | |
326 | } | |
327 | else { | |
328 | return PerlIO_fdopen(fd, (char *) mode); | |
329 | } | |
330 | return NULL; | |
ee518936 NIS |
331 | } |
332 | ||
0c4f7ff0 NIS |
333 | XS(XS_PerlIO__Layer__find) |
334 | { | |
14a5cf38 JH |
335 | dXSARGS; |
336 | if (items < 2) | |
337 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
338 | else { | |
dcda55fc | 339 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
340 | ST(0) = (strEQ(name, "crlf") |
341 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
342 | XSRETURN(1); | |
343 | } | |
0c4f7ff0 NIS |
344 | } |
345 | ||
346 | ||
347 | void | |
348 | Perl_boot_core_PerlIO(pTHX) | |
349 | { | |
14a5cf38 | 350 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
351 | } |
352 | ||
ac27b0f5 NIS |
353 | #endif |
354 | ||
32e30700 | 355 | |
6f9d8c32 | 356 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
357 | |
358 | void | |
e8632036 | 359 | PerlIO_init(pTHX) |
760ac839 | 360 | { |
96a5add6 | 361 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
362 | /* |
363 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 364 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 365 | * that may be required by loadable extensions e.g. for |
71200d45 | 366 | * FileHandle::tmpfile |
14a5cf38 | 367 | */ |
760ac839 LW |
368 | } |
369 | ||
33dcbb9a | 370 | #undef PerlIO_tmpfile |
371 | PerlIO * | |
8ac85365 | 372 | PerlIO_tmpfile(void) |
33dcbb9a | 373 | { |
14a5cf38 | 374 | return tmpfile(); |
33dcbb9a | 375 | } |
376 | ||
22569500 | 377 | #else /* PERLIO_IS_STDIO */ |
760ac839 LW |
378 | |
379 | #ifdef USE_SFIO | |
380 | ||
381 | #undef HAS_FSETPOS | |
382 | #undef HAS_FGETPOS | |
383 | ||
14a5cf38 JH |
384 | /* |
385 | * This section is just to make sure these functions get pulled in from | |
71200d45 | 386 | * libsfio.a |
14a5cf38 | 387 | */ |
760ac839 LW |
388 | |
389 | #undef PerlIO_tmpfile | |
390 | PerlIO * | |
c78749f2 | 391 | PerlIO_tmpfile(void) |
760ac839 | 392 | { |
14a5cf38 | 393 | return sftmp(0); |
760ac839 LW |
394 | } |
395 | ||
396 | void | |
e8632036 | 397 | PerlIO_init(pTHX) |
760ac839 | 398 | { |
96a5add6 | 399 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
400 | /* |
401 | * Force this file to be included in perl binary. Which allows this | |
402 | * file to force inclusion of other functions that may be required by | |
71200d45 | 403 | * loadable extensions e.g. for FileHandle::tmpfile |
14a5cf38 | 404 | */ |
760ac839 | 405 | |
14a5cf38 | 406 | /* |
71200d45 | 407 | * Hack sfio does its own 'autoflush' on stdout in common cases. Flush |
14a5cf38 | 408 | * results in a lot of lseek()s to regular files and lot of small |
71200d45 | 409 | * writes to pipes. |
14a5cf38 JH |
410 | */ |
411 | sfset(sfstdout, SF_SHARE, 0); | |
760ac839 LW |
412 | } |
413 | ||
b9d6bf13 | 414 | /* This is not the reverse of PerlIO_exportFILE(), PerlIO_releaseFILE() is. */ |
92bff44d | 415 | PerlIO * |
4b069b44 | 416 | PerlIO_importFILE(FILE *stdio, const char *mode) |
92bff44d | 417 | { |
de009b76 | 418 | const int fd = fileno(stdio); |
4b069b44 | 419 | if (!mode || !*mode) { |
81428673 | 420 | mode = "r+"; |
4b069b44 NIS |
421 | } |
422 | return PerlIO_fdopen(fd, mode); | |
92bff44d NIS |
423 | } |
424 | ||
425 | FILE * | |
426 | PerlIO_findFILE(PerlIO *pio) | |
427 | { | |
de009b76 AL |
428 | const int fd = PerlIO_fileno(pio); |
429 | FILE * const f = fdopen(fd, "r+"); | |
14a5cf38 JH |
430 | PerlIO_flush(pio); |
431 | if (!f && errno == EINVAL) | |
432 | f = fdopen(fd, "w"); | |
433 | if (!f && errno == EINVAL) | |
434 | f = fdopen(fd, "r"); | |
435 | return f; | |
92bff44d NIS |
436 | } |
437 | ||
438 | ||
22569500 | 439 | #else /* USE_SFIO */ |
6f9d8c32 | 440 | /*======================================================================================*/ |
14a5cf38 | 441 | /* |
71200d45 | 442 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 443 | */ |
760ac839 | 444 | |
76ced9ad NIS |
445 | #include "perliol.h" |
446 | ||
14a5cf38 JH |
447 | /* |
448 | * We _MUST_ have <unistd.h> if we are using lseek() and may have large | |
71200d45 | 449 | * files |
14a5cf38 | 450 | */ |
02f66e2f NIS |
451 | #ifdef I_UNISTD |
452 | #include <unistd.h> | |
453 | #endif | |
06da4f11 NIS |
454 | #ifdef HAS_MMAP |
455 | #include <sys/mman.h> | |
456 | #endif | |
457 | ||
6f9d8c32 | 458 | void |
14a5cf38 JH |
459 | PerlIO_debug(const char *fmt, ...) |
460 | { | |
14a5cf38 JH |
461 | va_list ap; |
462 | dSYS; | |
463 | va_start(ap, fmt); | |
27da23d5 | 464 | if (!PL_perlio_debug_fd && !PL_tainting && PL_uid == PL_euid && PL_gid == PL_egid) { |
dcda55fc | 465 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
14a5cf38 | 466 | if (s && *s) |
27da23d5 | 467 | PL_perlio_debug_fd = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); |
14a5cf38 | 468 | else |
27da23d5 | 469 | PL_perlio_debug_fd = -1; |
14a5cf38 | 470 | } |
27da23d5 | 471 | if (PL_perlio_debug_fd > 0) { |
14a5cf38 | 472 | dTHX; |
70ace5da | 473 | #ifdef USE_ITHREADS |
dcda55fc | 474 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
475 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
476 | char buffer[1024]; | |
dcda55fc | 477 | const STRLEN len = my_sprintf(buffer, "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
42d9b98d NC |
478 | const STRLEN len2 = vsprintf(buffer+len, fmt, ap); |
479 | PerlLIO_write(PL_perlio_debug_fd, buffer, len + len2); | |
70ace5da | 480 | #else |
dcda55fc AL |
481 | const char *s = CopFILE(PL_curcop); |
482 | STRLEN len; | |
396482e1 | 483 | SV * const sv = newSVpvs(""); |
dcda55fc | 484 | Perl_sv_catpvf(aTHX_ sv, "%s:%" IVdf " ", s ? s : "(none)", |
14a5cf38 JH |
485 | (IV) CopLINE(PL_curcop)); |
486 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); | |
487 | ||
b83604b4 | 488 | s = SvPV_const(sv, len); |
27da23d5 | 489 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 490 | SvREFCNT_dec(sv); |
70ace5da | 491 | #endif |
14a5cf38 JH |
492 | } |
493 | va_end(ap); | |
6f9d8c32 NIS |
494 | } |
495 | ||
9e353e3b NIS |
496 | /*--------------------------------------------------------------------------------------*/ |
497 | ||
14a5cf38 | 498 | /* |
71200d45 | 499 | * Inner level routines |
14a5cf38 | 500 | */ |
9e353e3b | 501 | |
14a5cf38 | 502 | /* |
71200d45 | 503 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 504 | */ |
05d1247b | 505 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 506 | |
760ac839 | 507 | PerlIO * |
5f1a76d0 | 508 | PerlIO_allocate(pTHX) |
6f9d8c32 | 509 | { |
97aff369 | 510 | dVAR; |
14a5cf38 | 511 | /* |
71200d45 | 512 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 JH |
513 | */ |
514 | PerlIO **last; | |
515 | PerlIO *f; | |
a1ea730d | 516 | last = &PL_perlio; |
14a5cf38 JH |
517 | while ((f = *last)) { |
518 | int i; | |
519 | last = (PerlIO **) (f); | |
520 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
521 | if (!*++f) { | |
522 | return f; | |
523 | } | |
524 | } | |
525 | } | |
a02a5408 | 526 | Newxz(f,PERLIO_TABLE_SIZE,PerlIO); |
14a5cf38 JH |
527 | if (!f) { |
528 | return NULL; | |
529 | } | |
530 | *last = f; | |
531 | return f + 1; | |
05d1247b NIS |
532 | } |
533 | ||
a1ea730d NIS |
534 | #undef PerlIO_fdupopen |
535 | PerlIO * | |
ecdeb87c | 536 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 537 | { |
04892f78 | 538 | if (PerlIOValid(f)) { |
de009b76 | 539 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 540 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
541 | if (tab && tab->Dup) |
542 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
543 | else { |
544 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
545 | } | |
a1ea730d | 546 | } |
210e727c JH |
547 | else |
548 | SETERRNO(EBADF, SS_IVCHAN); | |
549 | ||
550 | return NULL; | |
a1ea730d NIS |
551 | } |
552 | ||
553 | void | |
5f1a76d0 | 554 | PerlIO_cleantable(pTHX_ PerlIO **tablep) |
05d1247b | 555 | { |
dcda55fc | 556 | PerlIO * const table = *tablep; |
14a5cf38 JH |
557 | if (table) { |
558 | int i; | |
559 | PerlIO_cleantable(aTHX_(PerlIO **) & (table[0])); | |
560 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { | |
dcda55fc | 561 | PerlIO * const f = table + i; |
14a5cf38 JH |
562 | if (*f) { |
563 | PerlIO_close(f); | |
564 | } | |
565 | } | |
3a1ee7e8 | 566 | Safefree(table); |
14a5cf38 | 567 | *tablep = NULL; |
05d1247b | 568 | } |
05d1247b NIS |
569 | } |
570 | ||
fcf2db38 NIS |
571 | |
572 | PerlIO_list_t * | |
3a1ee7e8 | 573 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 574 | { |
14a5cf38 | 575 | PerlIO_list_t *list; |
96a5add6 | 576 | PERL_UNUSED_CONTEXT; |
a02a5408 | 577 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
578 | list->refcnt = 1; |
579 | return list; | |
fcf2db38 NIS |
580 | } |
581 | ||
582 | void | |
3a1ee7e8 | 583 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 584 | { |
14a5cf38 JH |
585 | if (list) { |
586 | if (--list->refcnt == 0) { | |
587 | if (list->array) { | |
14a5cf38 JH |
588 | IV i; |
589 | for (i = 0; i < list->cur; i++) { | |
590 | if (list->array[i].arg) | |
591 | SvREFCNT_dec(list->array[i].arg); | |
592 | } | |
593 | Safefree(list->array); | |
594 | } | |
595 | Safefree(list); | |
596 | } | |
597 | } | |
fcf2db38 NIS |
598 | } |
599 | ||
600 | void | |
3a1ee7e8 | 601 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 602 | { |
97aff369 | 603 | dVAR; |
334e202e | 604 | PerlIO_pair_t *p; |
b37c2d43 AL |
605 | PERL_UNUSED_CONTEXT; |
606 | ||
14a5cf38 JH |
607 | if (list->cur >= list->len) { |
608 | list->len += 8; | |
609 | if (list->array) | |
610 | Renew(list->array, list->len, PerlIO_pair_t); | |
611 | else | |
a02a5408 | 612 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
613 | } |
614 | p = &(list->array[list->cur++]); | |
615 | p->funcs = funcs; | |
616 | if ((p->arg = arg)) { | |
f84c484e | 617 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 618 | } |
fcf2db38 NIS |
619 | } |
620 | ||
3a1ee7e8 NIS |
621 | PerlIO_list_t * |
622 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
623 | { | |
b37c2d43 | 624 | PerlIO_list_t *list = NULL; |
694c95cf JH |
625 | if (proto) { |
626 | int i; | |
627 | list = PerlIO_list_alloc(aTHX); | |
628 | for (i=0; i < proto->cur; i++) { | |
a0714e2c | 629 | SV *arg = NULL; |
694c95cf JH |
630 | if (proto->array[i].arg) |
631 | arg = PerlIO_sv_dup(aTHX_ proto->array[i].arg,param); | |
632 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); | |
633 | } | |
3a1ee7e8 NIS |
634 | } |
635 | return list; | |
636 | } | |
4a4a6116 | 637 | |
05d1247b | 638 | void |
3a1ee7e8 | 639 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 640 | { |
3aaf42a7 | 641 | #ifdef USE_ITHREADS |
3a1ee7e8 NIS |
642 | PerlIO **table = &proto->Iperlio; |
643 | PerlIO *f; | |
644 | PL_perlio = NULL; | |
645 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
646 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
647 | PerlIO_allocate(aTHX); /* root slot is never used */ | |
694c95cf | 648 | PerlIO_debug("Clone %p from %p\n",aTHX,proto); |
3a1ee7e8 NIS |
649 | while ((f = *table)) { |
650 | int i; | |
651 | table = (PerlIO **) (f++); | |
652 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
653 | if (*f) { | |
93a8090d | 654 | (void) fp_dup(f, 0, param); |
3a1ee7e8 NIS |
655 | } |
656 | f++; | |
657 | } | |
658 | } | |
1b6737cc AL |
659 | #else |
660 | PERL_UNUSED_ARG(proto); | |
661 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 662 | #endif |
9a6404c5 DM |
663 | } |
664 | ||
665 | void | |
13621cfb NIS |
666 | PerlIO_destruct(pTHX) |
667 | { | |
97aff369 | 668 | dVAR; |
a1ea730d | 669 | PerlIO **table = &PL_perlio; |
14a5cf38 | 670 | PerlIO *f; |
694c95cf JH |
671 | #ifdef USE_ITHREADS |
672 | PerlIO_debug("Destruct %p\n",aTHX); | |
673 | #endif | |
14a5cf38 JH |
674 | while ((f = *table)) { |
675 | int i; | |
676 | table = (PerlIO **) (f++); | |
677 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
678 | PerlIO *x = f; | |
dcda55fc | 679 | const PerlIOl *l; |
14a5cf38 JH |
680 | while ((l = *x)) { |
681 | if (l->tab->kind & PERLIO_K_DESTRUCT) { | |
682 | PerlIO_debug("Destruct popping %s\n", l->tab->name); | |
683 | PerlIO_flush(x); | |
684 | PerlIO_pop(aTHX_ x); | |
685 | } | |
686 | else { | |
687 | x = PerlIONext(x); | |
688 | } | |
689 | } | |
690 | f++; | |
691 | } | |
692 | } | |
13621cfb NIS |
693 | } |
694 | ||
695 | void | |
a999f61b | 696 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 697 | { |
dcda55fc | 698 | const PerlIOl *l = *f; |
14a5cf38 | 699 | if (l) { |
fe5a182c | 700 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, l->tab->name); |
14a5cf38 JH |
701 | if (l->tab->Popped) { |
702 | /* | |
703 | * If popped returns non-zero do not free its layer structure | |
704 | * it has either done so itself, or it is shared and still in | |
71200d45 | 705 | * use |
14a5cf38 | 706 | */ |
f62ce20a | 707 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
708 | return; |
709 | } | |
b47cad08 | 710 | *f = l->next; |
3a1ee7e8 | 711 | Safefree(l); |
a8c08ecd | 712 | } |
6f9d8c32 NIS |
713 | } |
714 | ||
39f7a870 JH |
715 | /* Return as an array the stack of layers on a filehandle. Note that |
716 | * the stack is returned top-first in the array, and there are three | |
717 | * times as many array elements as there are layers in the stack: the | |
718 | * first element of a layer triplet is the name, the second one is the | |
719 | * arguments, and the third one is the flags. */ | |
720 | ||
721 | AV * | |
722 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
723 | { | |
97aff369 | 724 | dVAR; |
dcda55fc | 725 | AV * const av = newAV(); |
39f7a870 | 726 | |
dcda55fc AL |
727 | if (PerlIOValid(f)) { |
728 | PerlIOl *l = PerlIOBase(f); | |
729 | ||
730 | while (l) { | |
731 | SV * const name = l->tab && l->tab->name ? | |
732 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
733 | SV * const arg = l->tab && l->tab->Getarg ? | |
734 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
735 | av_push(av, name); | |
736 | av_push(av, arg); | |
737 | av_push(av, newSViv((IV)l->flags)); | |
738 | l = l->next; | |
739 | } | |
740 | } | |
39f7a870 | 741 | |
dcda55fc | 742 | return av; |
39f7a870 JH |
743 | } |
744 | ||
9e353e3b | 745 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 746 | /* |
71200d45 | 747 | * XS Interface for perl code |
14a5cf38 | 748 | */ |
9e353e3b | 749 | |
fcf2db38 | 750 | PerlIO_funcs * |
2edd7e44 | 751 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 752 | { |
27da23d5 | 753 | dVAR; |
14a5cf38 JH |
754 | IV i; |
755 | if ((SSize_t) len <= 0) | |
756 | len = strlen(name); | |
3a1ee7e8 | 757 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 758 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 759 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 760 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
761 | return f; |
762 | } | |
763 | } | |
3a1ee7e8 NIS |
764 | if (load && PL_subname && PL_def_layerlist |
765 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
766 | if (PL_in_load_module) { |
767 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
768 | return NULL; | |
769 | } else { | |
396482e1 | 770 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 AL |
771 | SV * const layer = newSVpvn(name, len); |
772 | CV * const cv = get_cv("PerlIO::Layer::NoWarnings", FALSE); | |
773 | ENTER; | |
d7a09b41 | 774 | SAVEINT(PL_in_load_module); |
c9bca74a | 775 | if (cv) { |
9cfa90c0 | 776 | SAVEGENERICSV(PL_warnhook); |
b37c2d43 | 777 | PL_warnhook = (SV *) (SvREFCNT_inc_simple_NN(cv)); |
c9bca74a | 778 | } |
d7a09b41 SR |
779 | PL_in_load_module++; |
780 | /* | |
781 | * The two SVs are magically freed by load_module | |
782 | */ | |
a0714e2c | 783 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
784 | PL_in_load_module--; |
785 | LEAVE; | |
786 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
787 | } | |
14a5cf38 JH |
788 | } |
789 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
790 | return NULL; | |
f3862f8b NIS |
791 | } |
792 | ||
2a1bc955 | 793 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
794 | |
795 | static int | |
796 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
797 | { | |
14a5cf38 | 798 | if (SvROK(sv)) { |
dcda55fc AL |
799 | IO * const io = GvIOn((GV *) SvRV(sv)); |
800 | PerlIO * const ifp = IoIFP(io); | |
801 | PerlIO * const ofp = IoOFP(io); | |
14a5cf38 JH |
802 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", sv, io, ifp, ofp); |
803 | } | |
804 | return 0; | |
b13b2135 NIS |
805 | } |
806 | ||
807 | static int | |
808 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
809 | { | |
14a5cf38 | 810 | if (SvROK(sv)) { |
dcda55fc AL |
811 | IO * const io = GvIOn((GV *) SvRV(sv)); |
812 | PerlIO * const ifp = IoIFP(io); | |
813 | PerlIO * const ofp = IoOFP(io); | |
14a5cf38 JH |
814 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", sv, io, ifp, ofp); |
815 | } | |
816 | return 0; | |
b13b2135 NIS |
817 | } |
818 | ||
819 | static int | |
820 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
821 | { | |
14a5cf38 JH |
822 | Perl_warn(aTHX_ "clear %" SVf, sv); |
823 | return 0; | |
b13b2135 NIS |
824 | } |
825 | ||
826 | static int | |
827 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
828 | { | |
14a5cf38 JH |
829 | Perl_warn(aTHX_ "free %" SVf, sv); |
830 | return 0; | |
b13b2135 NIS |
831 | } |
832 | ||
833 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
834 | perlio_mg_get, |
835 | perlio_mg_set, | |
22569500 | 836 | NULL, /* len */ |
14a5cf38 JH |
837 | perlio_mg_clear, |
838 | perlio_mg_free | |
b13b2135 NIS |
839 | }; |
840 | ||
841 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
842 | { | |
14a5cf38 | 843 | dXSARGS; |
dcda55fc AL |
844 | SV * const sv = SvRV(ST(1)); |
845 | AV * const av = newAV(); | |
14a5cf38 JH |
846 | MAGIC *mg; |
847 | int count = 0; | |
848 | int i; | |
849 | sv_magic(sv, (SV *) av, PERL_MAGIC_ext, NULL, 0); | |
850 | SvRMAGICAL_off(sv); | |
851 | mg = mg_find(sv, PERL_MAGIC_ext); | |
852 | mg->mg_virtual = &perlio_vtab; | |
853 | mg_magical(sv); | |
854 | Perl_warn(aTHX_ "attrib %" SVf, sv); | |
855 | for (i = 2; i < items; i++) { | |
856 | STRLEN len; | |
dcda55fc AL |
857 | const char * const name = SvPV_const(ST(i), len); |
858 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 859 | if (layer) { |
b37c2d43 | 860 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
861 | } |
862 | else { | |
863 | ST(count) = ST(i); | |
864 | count++; | |
865 | } | |
866 | } | |
867 | SvREFCNT_dec(av); | |
868 | XSRETURN(count); | |
869 | } | |
870 | ||
22569500 | 871 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 872 | |
e3f3bf95 NIS |
873 | SV * |
874 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 875 | { |
89529cee | 876 | HV * const stash = gv_stashpvs("PerlIO::Layer", TRUE); |
46c461b5 | 877 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 878 | return sv; |
e3f3bf95 NIS |
879 | } |
880 | ||
5ca1d77f | 881 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 882 | { |
37725cdc | 883 | /* This is used as a %SIG{__WARN__} handler to supress warnings |
c9bca74a NIS |
884 | during loading of layers. |
885 | */ | |
97aff369 | 886 | dVAR; |
c9bca74a NIS |
887 | dXSARGS; |
888 | if (items) | |
e62f0680 | 889 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
890 | XSRETURN(0); |
891 | } | |
892 | ||
5ca1d77f | 893 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 894 | { |
97aff369 | 895 | dVAR; |
14a5cf38 JH |
896 | dXSARGS; |
897 | if (items < 2) | |
898 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
899 | else { | |
de009b76 | 900 | STRLEN len; |
46c461b5 | 901 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 902 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 903 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
904 | ST(0) = |
905 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
906 | &PL_sv_undef; | |
907 | XSRETURN(1); | |
908 | } | |
0c4f7ff0 NIS |
909 | } |
910 | ||
e3f3bf95 NIS |
911 | void |
912 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
913 | { | |
97aff369 | 914 | dVAR; |
3a1ee7e8 NIS |
915 | if (!PL_known_layers) |
916 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 917 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 918 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
919 | } |
920 | ||
1141d9f8 | 921 | int |
fcf2db38 | 922 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 923 | { |
97aff369 | 924 | dVAR; |
14a5cf38 JH |
925 | if (names) { |
926 | const char *s = names; | |
927 | while (*s) { | |
928 | while (isSPACE(*s) || *s == ':') | |
929 | s++; | |
930 | if (*s) { | |
931 | STRLEN llen = 0; | |
932 | const char *e = s; | |
bd61b366 | 933 | const char *as = NULL; |
14a5cf38 JH |
934 | STRLEN alen = 0; |
935 | if (!isIDFIRST(*s)) { | |
936 | /* | |
937 | * Message is consistent with how attribute lists are | |
938 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 939 | * seen as an invalid separator character. |
14a5cf38 | 940 | */ |
de009b76 | 941 | const char q = ((*s == '\'') ? '"' : '\''); |
99ef548b | 942 | if (ckWARN(WARN_LAYER)) |
22569500 | 943 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
b4581f09 | 944 | "Invalid separator character %c%c%c in PerlIO layer specification %s", |
1e616cf5 | 945 | q, *s, q, s); |
93189314 | 946 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
947 | return -1; |
948 | } | |
949 | do { | |
950 | e++; | |
951 | } while (isALNUM(*e)); | |
952 | llen = e - s; | |
953 | if (*e == '(') { | |
954 | int nesting = 1; | |
955 | as = ++e; | |
956 | while (nesting) { | |
957 | switch (*e++) { | |
958 | case ')': | |
959 | if (--nesting == 0) | |
960 | alen = (e - 1) - as; | |
961 | break; | |
962 | case '(': | |
963 | ++nesting; | |
964 | break; | |
965 | case '\\': | |
966 | /* | |
967 | * It's a nul terminated string, not allowed | |
968 | * to \ the terminating null. Anything other | |
71200d45 | 969 | * character is passed over. |
14a5cf38 JH |
970 | */ |
971 | if (*e++) { | |
972 | break; | |
973 | } | |
974 | /* | |
71200d45 | 975 | * Drop through |
14a5cf38 JH |
976 | */ |
977 | case '\0': | |
978 | e--; | |
22569500 NIS |
979 | if (ckWARN(WARN_LAYER)) |
980 | Perl_warner(aTHX_ packWARN(WARN_LAYER), | |
b4581f09 | 981 | "Argument list not closed for PerlIO layer \"%.*s\"", |
14a5cf38 JH |
982 | (int) (e - s), s); |
983 | return -1; | |
984 | default: | |
985 | /* | |
71200d45 | 986 | * boring. |
14a5cf38 JH |
987 | */ |
988 | break; | |
989 | } | |
990 | } | |
991 | } | |
992 | if (e > s) { | |
46c461b5 | 993 | PerlIO_funcs * const layer = |
14a5cf38 JH |
994 | PerlIO_find_layer(aTHX_ s, llen, 1); |
995 | if (layer) { | |
3a1ee7e8 | 996 | PerlIO_list_push(aTHX_ av, layer, |
14a5cf38 JH |
997 | (as) ? newSVpvn(as, |
998 | alen) : | |
999 | &PL_sv_undef); | |
1000 | } | |
1001 | else { | |
041457d9 | 1002 | if (ckWARN(WARN_LAYER)) |
b4581f09 | 1003 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1004 | (int) llen, s); |
1005 | return -1; | |
1006 | } | |
1007 | } | |
1008 | s = e; | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | return 0; | |
1141d9f8 NIS |
1013 | } |
1014 | ||
dfebf958 | 1015 | void |
fcf2db38 | 1016 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1017 | { |
97aff369 | 1018 | dVAR; |
27da23d5 | 1019 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1020 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1021 | tab = &PerlIO_crlf; |
846be114 | 1022 | #else |
6ce75a77 | 1023 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1024 | tab = &PerlIO_stdio; |
846be114 | 1025 | #endif |
14a5cf38 | 1026 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1027 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1028 | &PL_sv_undef); |
dfebf958 NIS |
1029 | } |
1030 | ||
e3f3bf95 | 1031 | SV * |
14a5cf38 | 1032 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1033 | { |
14a5cf38 | 1034 | return av->array[n].arg; |
e3f3bf95 NIS |
1035 | } |
1036 | ||
f3862f8b | 1037 | PerlIO_funcs * |
14a5cf38 | 1038 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1039 | { |
14a5cf38 JH |
1040 | if (n >= 0 && n < av->cur) { |
1041 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1042 | av->array[n].funcs->name); | |
1043 | return av->array[n].funcs; | |
1044 | } | |
1045 | if (!def) | |
1046 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1047 | return def; | |
e3f3bf95 NIS |
1048 | } |
1049 | ||
4ec2216f NIS |
1050 | IV |
1051 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1052 | { | |
8772537c AL |
1053 | PERL_UNUSED_ARG(mode); |
1054 | PERL_UNUSED_ARG(arg); | |
1055 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1056 | if (PerlIOValid(f)) { |
1057 | PerlIO_flush(f); | |
1058 | PerlIO_pop(aTHX_ f); | |
1059 | return 0; | |
1060 | } | |
1061 | return -1; | |
1062 | } | |
1063 | ||
27da23d5 | 1064 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1065 | sizeof(PerlIO_funcs), |
1066 | "pop", | |
1067 | 0, | |
1068 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1069 | PerlIOPop_pushed, | |
1070 | NULL, | |
1071 | NULL, | |
1072 | NULL, | |
1073 | NULL, | |
1074 | NULL, | |
1075 | NULL, | |
1076 | NULL, | |
1077 | NULL, | |
1078 | NULL, | |
1079 | NULL, | |
de009b76 AL |
1080 | NULL, |
1081 | NULL, | |
4ec2216f NIS |
1082 | NULL, /* flush */ |
1083 | NULL, /* fill */ | |
1084 | NULL, | |
1085 | NULL, | |
1086 | NULL, | |
1087 | NULL, | |
1088 | NULL, /* get_base */ | |
1089 | NULL, /* get_bufsiz */ | |
1090 | NULL, /* get_ptr */ | |
1091 | NULL, /* get_cnt */ | |
1092 | NULL, /* set_ptrcnt */ | |
1093 | }; | |
1094 | ||
fcf2db38 | 1095 | PerlIO_list_t * |
e3f3bf95 NIS |
1096 | PerlIO_default_layers(pTHX) |
1097 | { | |
97aff369 | 1098 | dVAR; |
3a1ee7e8 | 1099 | if (!PL_def_layerlist) { |
bd61b366 | 1100 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1101 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1102 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1103 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1104 | #if defined(WIN32) |
27da23d5 | 1105 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1106 | #if 0 |
14a5cf38 | 1107 | osLayer = &PerlIO_win32; |
0c4128ad | 1108 | #endif |
2f8118af | 1109 | #endif |
27da23d5 JH |
1110 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1111 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1112 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1113 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1114 | #ifdef HAS_MMAP |
27da23d5 | 1115 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1116 | #endif |
27da23d5 JH |
1117 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1118 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1119 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1120 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1121 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1122 | &PL_sv_undef); | |
1123 | if (s) { | |
3a1ee7e8 | 1124 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1125 | } |
1126 | else { | |
3a1ee7e8 | 1127 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1128 | } |
1141d9f8 | 1129 | } |
3a1ee7e8 NIS |
1130 | if (PL_def_layerlist->cur < 2) { |
1131 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1132 | } |
3a1ee7e8 | 1133 | return PL_def_layerlist; |
e3f3bf95 NIS |
1134 | } |
1135 | ||
0c4f7ff0 NIS |
1136 | void |
1137 | Perl_boot_core_PerlIO(pTHX) | |
1138 | { | |
1139 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1140 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1141 | __FILE__); | |
0c4f7ff0 | 1142 | #endif |
14a5cf38 | 1143 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1144 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1145 | } |
e3f3bf95 NIS |
1146 | |
1147 | PerlIO_funcs * | |
1148 | PerlIO_default_layer(pTHX_ I32 n) | |
1149 | { | |
97aff369 | 1150 | dVAR; |
46c461b5 | 1151 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1152 | if (n < 0) |
1153 | n += av->cur; | |
27da23d5 | 1154 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1155 | } |
1156 | ||
a999f61b NIS |
1157 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1158 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1159 | |
1160 | void | |
1141d9f8 | 1161 | PerlIO_stdstreams(pTHX) |
60382766 | 1162 | { |
97aff369 | 1163 | dVAR; |
a1ea730d | 1164 | if (!PL_perlio) { |
14a5cf38 JH |
1165 | PerlIO_allocate(aTHX); |
1166 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); | |
1167 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1168 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1169 | } | |
60382766 NIS |
1170 | } |
1171 | ||
1172 | PerlIO * | |
27da23d5 | 1173 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1174 | { |
2dc2558e NIS |
1175 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
1176 | mismatch: | |
1177 | Perl_croak(aTHX_ "Layer does not match this perl"); | |
1178 | } | |
1179 | if (tab->size) { | |
b464bac0 | 1180 | PerlIOl *l; |
2dc2558e NIS |
1181 | if (tab->size < sizeof(PerlIOl)) { |
1182 | goto mismatch; | |
1183 | } | |
1184 | /* Real layer with a data area */ | |
002e75cf JH |
1185 | if (f) { |
1186 | char *temp; | |
1187 | Newxz(temp, tab->size, char); | |
1188 | l = (PerlIOl*)temp; | |
1189 | if (l) { | |
1190 | l->next = *f; | |
1191 | l->tab = (PerlIO_funcs*) tab; | |
1192 | *f = l; | |
1193 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
1194 | (void*)f, tab->name, | |
1195 | (mode) ? mode : "(Null)", (void*)arg); | |
1196 | if (*l->tab->Pushed && | |
1197 | (*l->tab->Pushed) | |
1198 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1199 | PerlIO_pop(aTHX_ f); | |
1200 | return NULL; | |
1201 | } | |
2dc2558e | 1202 | } |
002e75cf JH |
1203 | else |
1204 | return NULL; | |
2dc2558e NIS |
1205 | } |
1206 | } | |
1207 | else if (f) { | |
1208 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1209 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1210 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1211 | if (tab->Pushed && |
27da23d5 | 1212 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1213 | return NULL; |
14a5cf38 JH |
1214 | } |
1215 | } | |
1216 | return f; | |
60382766 NIS |
1217 | } |
1218 | ||
dfebf958 | 1219 | IV |
86e05cf2 NIS |
1220 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1221 | { | |
1222 | if (PerlIOValid(f)) { | |
1223 | /* Is layer suitable for raw stream ? */ | |
1224 | if (PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1225 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1226 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1227 | } | |
1228 | else { | |
1229 | /* Not suitable - pop it */ | |
1230 | PerlIO_pop(aTHX_ f); | |
1231 | } | |
1232 | return 0; | |
1233 | } | |
1234 | return -1; | |
1235 | } | |
1236 | ||
1237 | IV | |
2dc2558e | 1238 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1239 | { |
8772537c AL |
1240 | PERL_UNUSED_ARG(mode); |
1241 | PERL_UNUSED_ARG(arg); | |
1242 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1243 | |
04892f78 | 1244 | if (PerlIOValid(f)) { |
86e05cf2 | 1245 | PerlIO *t; |
de009b76 | 1246 | const PerlIOl *l; |
14a5cf38 | 1247 | PerlIO_flush(f); |
86e05cf2 NIS |
1248 | /* |
1249 | * Strip all layers that are not suitable for a raw stream | |
1250 | */ | |
1251 | t = f; | |
1252 | while (t && (l = *t)) { | |
1253 | if (l->tab->Binmode) { | |
1254 | /* Has a handler - normal case */ | |
1255 | if ((*l->tab->Binmode)(aTHX_ f) == 0) { | |
1256 | if (*t == l) { | |
1257 | /* Layer still there - move down a layer */ | |
1258 | t = PerlIONext(t); | |
1259 | } | |
1260 | } | |
1261 | else { | |
1262 | return -1; | |
1263 | } | |
14a5cf38 JH |
1264 | } |
1265 | else { | |
86e05cf2 NIS |
1266 | /* No handler - pop it */ |
1267 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1268 | } |
1269 | } | |
86e05cf2 NIS |
1270 | if (PerlIOValid(f)) { |
1271 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); | |
1272 | return 0; | |
1273 | } | |
14a5cf38 JH |
1274 | } |
1275 | return -1; | |
dfebf958 NIS |
1276 | } |
1277 | ||
ac27b0f5 | 1278 | int |
14a5cf38 | 1279 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1280 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1281 | { |
14a5cf38 JH |
1282 | int code = 0; |
1283 | while (n < max) { | |
8772537c | 1284 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1285 | if (tab) { |
1286 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1287 | code = -1; | |
1288 | break; | |
1289 | } | |
1290 | } | |
1291 | n++; | |
1292 | } | |
1293 | return code; | |
e3f3bf95 NIS |
1294 | } |
1295 | ||
1296 | int | |
ac27b0f5 NIS |
1297 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1298 | { | |
14a5cf38 | 1299 | int code = 0; |
53f1b6d2 | 1300 | if (f && names) { |
8772537c | 1301 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1302 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1303 | if (code == 0) { | |
d9dac8cd | 1304 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1305 | } |
3a1ee7e8 | 1306 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1307 | } |
14a5cf38 | 1308 | return code; |
ac27b0f5 NIS |
1309 | } |
1310 | ||
f3862f8b | 1311 | |
60382766 | 1312 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1313 | /* |
71200d45 | 1314 | * Given the abstraction above the public API functions |
14a5cf38 | 1315 | */ |
60382766 NIS |
1316 | |
1317 | int | |
f5b9d040 | 1318 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1319 | { |
68b5363f PD |
1320 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
1321 | (PerlIOBase(f)) ? PerlIOBase(f)->tab->name : "(Null)", | |
1322 | iotype, mode, (names) ? names : "(Null)"); | |
1323 | ||
03c0554d NIS |
1324 | if (names) { |
1325 | /* Do not flush etc. if (e.g.) switching encodings. | |
1326 | if a pushed layer knows it needs to flush lower layers | |
1327 | (for example :unix which is never going to call them) | |
1328 | it can do the flush when it is pushed. | |
1329 | */ | |
1330 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1331 | } | |
1332 | else { | |
86e05cf2 | 1333 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1334 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1335 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1336 | O_BINARY so we can look for it in mode. | |
1337 | */ | |
1338 | if (!(mode & O_BINARY)) { | |
1339 | /* Text mode */ | |
86e05cf2 NIS |
1340 | /* FIXME?: Looking down the layer stack seems wrong, |
1341 | but is a way of reaching past (say) an encoding layer | |
1342 | to flip CRLF-ness of the layer(s) below | |
1343 | */ | |
03c0554d NIS |
1344 | while (*f) { |
1345 | /* Perhaps we should turn on bottom-most aware layer | |
1346 | e.g. Ilya's idea that UNIX TTY could serve | |
1347 | */ | |
1348 | if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { | |
1349 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1350 | /* Not in text mode - flush any pending stuff and flip it */ | |
1351 | PerlIO_flush(f); | |
1352 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1353 | } | |
1354 | /* Only need to turn it on in one layer so we are done */ | |
1355 | return TRUE; | |
ed53a2bb | 1356 | } |
03c0554d | 1357 | f = PerlIONext(f); |
14a5cf38 | 1358 | } |
03c0554d NIS |
1359 | /* Not finding a CRLF aware layer presumably means we are binary |
1360 | which is not what was requested - so we failed | |
1361 | We _could_ push :crlf layer but so could caller | |
1362 | */ | |
1363 | return FALSE; | |
14a5cf38 | 1364 | } |
6ce75a77 | 1365 | #endif |
86e05cf2 NIS |
1366 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1367 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1368 | */ |
a0714e2c | 1369 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1370 | } |
f5b9d040 NIS |
1371 | } |
1372 | ||
f5b9d040 | 1373 | int |
e87a358a | 1374 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1375 | { |
37725cdc | 1376 | if (PerlIOValid(f)) { |
46c461b5 | 1377 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1378 | if (tab && tab->Close) |
1379 | return (*tab->Close)(aTHX_ f); | |
1380 | else | |
1381 | return PerlIOBase_close(aTHX_ f); | |
1382 | } | |
14a5cf38 | 1383 | else { |
93189314 | 1384 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1385 | return -1; |
1386 | } | |
76ced9ad NIS |
1387 | } |
1388 | ||
b931b1d9 | 1389 | int |
e87a358a | 1390 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1391 | { |
de009b76 | 1392 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1393 | while (PerlIOValid(f)) { |
1394 | PerlIO_pop(aTHX_ f); | |
f6c77cf1 | 1395 | } |
14a5cf38 | 1396 | return code; |
b931b1d9 NIS |
1397 | } |
1398 | ||
b931b1d9 | 1399 | int |
e87a358a | 1400 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1401 | { |
97aff369 | 1402 | dVAR; |
b32dd47e | 1403 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1404 | } |
1405 | ||
1141d9f8 NIS |
1406 | static const char * |
1407 | PerlIO_context_layers(pTHX_ const char *mode) | |
1408 | { | |
97aff369 | 1409 | dVAR; |
14a5cf38 JH |
1410 | const char *type = NULL; |
1411 | /* | |
71200d45 | 1412 | * Need to supply default layer info from open.pm |
14a5cf38 JH |
1413 | */ |
1414 | if (PL_curcop) { | |
dcda55fc | 1415 | SV * const layers = PL_curcop->cop_io; |
14a5cf38 JH |
1416 | if (layers) { |
1417 | STRLEN len; | |
b83604b4 | 1418 | type = SvPV_const(layers, len); |
14a5cf38 JH |
1419 | if (type && mode[0] != 'r') { |
1420 | /* | |
71200d45 | 1421 | * Skip to write part |
14a5cf38 | 1422 | */ |
dcda55fc | 1423 | const char * const s = strchr(type, 0); |
eb160463 | 1424 | if (s && (STRLEN)(s - type) < len) { |
14a5cf38 JH |
1425 | type = s + 1; |
1426 | } | |
1427 | } | |
1428 | } | |
1429 | } | |
1430 | return type; | |
1141d9f8 NIS |
1431 | } |
1432 | ||
fcf2db38 | 1433 | static PerlIO_funcs * |
2edd7e44 NIS |
1434 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1435 | { | |
97aff369 | 1436 | dVAR; |
14a5cf38 | 1437 | /* |
71200d45 | 1438 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 JH |
1439 | */ |
1440 | if (SvTYPE(sv) < SVt_PVAV) | |
6a245ed1 | 1441 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
14a5cf38 JH |
1442 | |
1443 | /* | |
71200d45 | 1444 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1445 | */ |
1446 | switch (SvTYPE(sv)) { | |
1447 | case SVt_PVAV: | |
6a245ed1 | 1448 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1449 | case SVt_PVHV: |
6a245ed1 | 1450 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1451 | case SVt_PVCV: |
6a245ed1 | 1452 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1453 | case SVt_PVGV: |
6a245ed1 | 1454 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
14a5cf38 JH |
1455 | } |
1456 | return NULL; | |
2edd7e44 NIS |
1457 | } |
1458 | ||
fcf2db38 | 1459 | PerlIO_list_t * |
14a5cf38 JH |
1460 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1461 | const char *mode, int narg, SV **args) | |
1462 | { | |
97aff369 | 1463 | dVAR; |
14a5cf38 JH |
1464 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1465 | int incdef = 1; | |
a1ea730d | 1466 | if (!PL_perlio) |
14a5cf38 JH |
1467 | PerlIO_stdstreams(aTHX); |
1468 | if (narg) { | |
dcda55fc | 1469 | SV * const arg = *args; |
14a5cf38 | 1470 | /* |
71200d45 NIS |
1471 | * If it is a reference but not an object see if we have a handler |
1472 | * for it | |
14a5cf38 JH |
1473 | */ |
1474 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1475 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1476 | if (handler) { |
3a1ee7e8 NIS |
1477 | def = PerlIO_list_alloc(aTHX); |
1478 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1479 | incdef = 0; |
1480 | } | |
1481 | /* | |
e934609f | 1482 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1483 | * something sensible else we will just stringfy and open |
71200d45 | 1484 | * resulting string. |
14a5cf38 JH |
1485 | */ |
1486 | } | |
1487 | } | |
9fe371da | 1488 | if (!layers || !*layers) |
14a5cf38 JH |
1489 | layers = PerlIO_context_layers(aTHX_ mode); |
1490 | if (layers && *layers) { | |
1491 | PerlIO_list_t *av; | |
1492 | if (incdef) { | |
de009b76 | 1493 | IV i; |
3a1ee7e8 | 1494 | av = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1495 | for (i = 0; i < def->cur; i++) { |
3a1ee7e8 | 1496 | PerlIO_list_push(aTHX_ av, def->array[i].funcs, |
14a5cf38 JH |
1497 | def->array[i].arg); |
1498 | } | |
1499 | } | |
1500 | else { | |
1501 | av = def; | |
1502 | } | |
0cff2cf3 NIS |
1503 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1504 | return av; | |
1505 | } | |
1506 | else { | |
1507 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1508 | return NULL; |
0cff2cf3 | 1509 | } |
14a5cf38 JH |
1510 | } |
1511 | else { | |
1512 | if (incdef) | |
1513 | def->refcnt++; | |
1514 | return def; | |
1515 | } | |
ee518936 NIS |
1516 | } |
1517 | ||
1518 | PerlIO * | |
14a5cf38 JH |
1519 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1520 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1521 | { | |
97aff369 | 1522 | dVAR; |
14a5cf38 JH |
1523 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1524 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1525 | if (!layers || !*layers) |
14a5cf38 JH |
1526 | layers = PerlIO_context_layers(aTHX_ mode); |
1527 | if (layers && *layers) | |
1528 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1529 | } | |
1530 | } | |
1531 | else { | |
de009b76 | 1532 | PerlIO_list_t *layera; |
14a5cf38 JH |
1533 | IV n; |
1534 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1535 | if (PerlIOValid(f)) { |
14a5cf38 | 1536 | /* |
71200d45 NIS |
1537 | * This is "reopen" - it is not tested as perl does not use it |
1538 | * yet | |
14a5cf38 JH |
1539 | */ |
1540 | PerlIOl *l = *f; | |
3a1ee7e8 | 1541 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1542 | while (l) { |
46c461b5 | 1543 | SV * const arg = (l->tab->Getarg) |
04892f78 NIS |
1544 | ? (*l->tab->Getarg) (aTHX_ &l, NULL, 0) |
1545 | : &PL_sv_undef; | |
3a1ee7e8 | 1546 | PerlIO_list_push(aTHX_ layera, l->tab, arg); |
14a5cf38 JH |
1547 | l = *PerlIONext(&l); |
1548 | } | |
1549 | } | |
1550 | else { | |
1551 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1552 | if (!layera) { |
1553 | return NULL; | |
1554 | } | |
14a5cf38 JH |
1555 | } |
1556 | /* | |
71200d45 | 1557 | * Start at "top" of layer stack |
14a5cf38 JH |
1558 | */ |
1559 | n = layera->cur - 1; | |
1560 | while (n >= 0) { | |
46c461b5 | 1561 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1562 | if (t && t->Open) { |
1563 | tab = t; | |
1564 | break; | |
1565 | } | |
1566 | n--; | |
1567 | } | |
1568 | if (tab) { | |
1569 | /* | |
71200d45 | 1570 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1571 | */ |
7cf31beb | 1572 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1573 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1574 | } |
14a5cf38 | 1575 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1576 | tab->name, layers ? layers : "(Null)", mode, fd, |
1577 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1578 | if (tab->Open) |
1579 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1580 | f, narg, args); | |
1581 | else { | |
1582 | SETERRNO(EINVAL, LIB_INVARG); | |
1583 | f = NULL; | |
1584 | } | |
14a5cf38 JH |
1585 | if (f) { |
1586 | if (n + 1 < layera->cur) { | |
1587 | /* | |
1588 | * More layers above the one that we used to open - | |
71200d45 | 1589 | * apply them now |
14a5cf38 | 1590 | */ |
d9dac8cd NIS |
1591 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1592 | /* If pushing layers fails close the file */ | |
1593 | PerlIO_close(f); | |
14a5cf38 JH |
1594 | f = NULL; |
1595 | } | |
1596 | } | |
1597 | } | |
1598 | } | |
3a1ee7e8 | 1599 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1600 | } |
1601 | return f; | |
ee518936 | 1602 | } |
b931b1d9 NIS |
1603 | |
1604 | ||
9e353e3b | 1605 | SSize_t |
e87a358a | 1606 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1607 | { |
b32dd47e | 1608 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1609 | } |
1610 | ||
313ca112 | 1611 | SSize_t |
e87a358a | 1612 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1613 | { |
b32dd47e | 1614 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1615 | } |
1616 | ||
9e353e3b | 1617 | SSize_t |
e87a358a | 1618 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1619 | { |
b32dd47e | 1620 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1621 | } |
1622 | ||
6f9d8c32 | 1623 | int |
e87a358a | 1624 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1625 | { |
b32dd47e | 1626 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1627 | } |
1628 | ||
9e353e3b | 1629 | Off_t |
e87a358a | 1630 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1631 | { |
b32dd47e | 1632 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1633 | } |
1634 | ||
6f9d8c32 | 1635 | int |
e87a358a | 1636 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1637 | { |
97aff369 | 1638 | dVAR; |
14a5cf38 JH |
1639 | if (f) { |
1640 | if (*f) { | |
de009b76 | 1641 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1642 | |
1643 | if (tab && tab->Flush) | |
f62ce20a | 1644 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1645 | else |
1646 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1647 | } |
1648 | else { | |
fe5a182c | 1649 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1650 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1651 | return -1; |
1652 | } | |
1653 | } | |
1654 | else { | |
1655 | /* | |
1656 | * Is it good API design to do flush-all on NULL, a potentially | |
1657 | * errorneous input? Maybe some magical value (PerlIO* | |
1658 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1659 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1660 | * decisions? --jhi |
14a5cf38 | 1661 | */ |
a1ea730d | 1662 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1663 | int code = 0; |
1664 | while ((f = *table)) { | |
1665 | int i; | |
1666 | table = (PerlIO **) (f++); | |
1667 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1668 | if (*f && PerlIO_flush(f) != 0) | |
1669 | code = -1; | |
1670 | f++; | |
1671 | } | |
1672 | } | |
1673 | return code; | |
1674 | } | |
760ac839 LW |
1675 | } |
1676 | ||
a9c883f6 | 1677 | void |
f62ce20a | 1678 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1679 | { |
97aff369 | 1680 | dVAR; |
a1ea730d | 1681 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1682 | PerlIO *f; |
1683 | while ((f = *table)) { | |
1684 | int i; | |
1685 | table = (PerlIO **) (f++); | |
1686 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1687 | if (*f | |
1688 | && (PerlIOBase(f)-> | |
1689 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1690 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1691 | PerlIO_flush(f); | |
1692 | f++; | |
1693 | } | |
a9c883f6 | 1694 | } |
a9c883f6 NIS |
1695 | } |
1696 | ||
06da4f11 | 1697 | int |
e87a358a | 1698 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1699 | { |
b32dd47e | 1700 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1701 | } |
1702 | ||
f3862f8b NIS |
1703 | int |
1704 | PerlIO_isutf8(PerlIO *f) | |
1705 | { | |
1b7a0411 JH |
1706 | if (PerlIOValid(f)) |
1707 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1708 | else | |
1709 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1710 | |
1b7a0411 | 1711 | return -1; |
f3862f8b NIS |
1712 | } |
1713 | ||
6f9d8c32 | 1714 | int |
e87a358a | 1715 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1716 | { |
b32dd47e | 1717 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1718 | } |
1719 | ||
9e353e3b | 1720 | int |
e87a358a | 1721 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1722 | { |
b32dd47e | 1723 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1724 | } |
1725 | ||
9e353e3b | 1726 | void |
e87a358a | 1727 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1728 | { |
b32dd47e | 1729 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1730 | } |
1731 | ||
9e353e3b | 1732 | void |
e87a358a | 1733 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1734 | { |
b32dd47e | 1735 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1736 | } |
1737 | ||
9e353e3b NIS |
1738 | int |
1739 | PerlIO_has_base(PerlIO *f) | |
1740 | { | |
1b7a0411 | 1741 | if (PerlIOValid(f)) { |
46c461b5 | 1742 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1743 | |
1744 | if (tab) | |
1745 | return (tab->Get_base != NULL); | |
1746 | SETERRNO(EINVAL, LIB_INVARG); | |
1747 | } | |
1748 | else | |
1749 | SETERRNO(EBADF, SS_IVCHAN); | |
1750 | ||
1751 | return 0; | |
760ac839 LW |
1752 | } |
1753 | ||
9e353e3b NIS |
1754 | int |
1755 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1756 | { |
04892f78 | 1757 | if (PerlIOValid(f) && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) { |
46c461b5 | 1758 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1759 | |
1760 | if (tab) | |
1761 | return (tab->Set_ptrcnt != NULL); | |
1762 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1763 | } |
1b7a0411 JH |
1764 | else |
1765 | SETERRNO(EBADF, SS_IVCHAN); | |
1766 | ||
14a5cf38 | 1767 | return 0; |
9e353e3b NIS |
1768 | } |
1769 | ||
9e353e3b NIS |
1770 | int |
1771 | PerlIO_has_cntptr(PerlIO *f) | |
1772 | { | |
04892f78 | 1773 | if (PerlIOValid(f)) { |
46c461b5 | 1774 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1775 | |
1776 | if (tab) | |
1777 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1778 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1779 | } |
1b7a0411 JH |
1780 | else |
1781 | SETERRNO(EBADF, SS_IVCHAN); | |
1782 | ||
14a5cf38 | 1783 | return 0; |
9e353e3b NIS |
1784 | } |
1785 | ||
9e353e3b NIS |
1786 | int |
1787 | PerlIO_canset_cnt(PerlIO *f) | |
1788 | { | |
04892f78 | 1789 | if (PerlIOValid(f)) { |
46c461b5 | 1790 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1791 | |
1792 | if (tab) | |
1793 | return (tab->Set_ptrcnt != NULL); | |
1794 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1795 | } |
1b7a0411 JH |
1796 | else |
1797 | SETERRNO(EBADF, SS_IVCHAN); | |
1798 | ||
14a5cf38 | 1799 | return 0; |
760ac839 LW |
1800 | } |
1801 | ||
888911fc | 1802 | STDCHAR * |
e87a358a | 1803 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1804 | { |
b32dd47e | 1805 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1806 | } |
1807 | ||
9e353e3b | 1808 | int |
e87a358a | 1809 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1810 | { |
b32dd47e | 1811 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1812 | } |
1813 | ||
9e353e3b | 1814 | STDCHAR * |
e87a358a | 1815 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1816 | { |
b32dd47e | 1817 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1818 | } |
1819 | ||
05d1247b | 1820 | int |
e87a358a | 1821 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1822 | { |
b32dd47e | 1823 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1824 | } |
1825 | ||
9e353e3b | 1826 | void |
e87a358a | 1827 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1828 | { |
b32dd47e | 1829 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1830 | } |
1831 | ||
9e353e3b | 1832 | void |
e87a358a | 1833 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1834 | { |
b32dd47e | 1835 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1836 | } |
1837 | ||
4ec2216f | 1838 | |
9e353e3b | 1839 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1840 | /* |
71200d45 | 1841 | * utf8 and raw dummy layers |
14a5cf38 | 1842 | */ |
dfebf958 | 1843 | |
26fb694e | 1844 | IV |
2dc2558e | 1845 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1846 | { |
96a5add6 | 1847 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1848 | PERL_UNUSED_ARG(mode); |
1849 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1850 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1851 | if (tab->kind & PERLIO_K_UTF8) |
1852 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1853 | else | |
1854 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1855 | return 0; | |
1856 | } | |
1857 | return -1; | |
26fb694e NIS |
1858 | } |
1859 | ||
27da23d5 | 1860 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1861 | sizeof(PerlIO_funcs), |
14a5cf38 | 1862 | "utf8", |
2dc2558e | 1863 | 0, |
6874a2de | 1864 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1865 | PerlIOUtf8_pushed, |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
1869 | NULL, | |
1870 | NULL, | |
1871 | NULL, | |
1872 | NULL, | |
1873 | NULL, | |
1874 | NULL, | |
1875 | NULL, | |
de009b76 AL |
1876 | NULL, |
1877 | NULL, | |
22569500 NIS |
1878 | NULL, /* flush */ |
1879 | NULL, /* fill */ | |
14a5cf38 JH |
1880 | NULL, |
1881 | NULL, | |
1882 | NULL, | |
1883 | NULL, | |
22569500 NIS |
1884 | NULL, /* get_base */ |
1885 | NULL, /* get_bufsiz */ | |
1886 | NULL, /* get_ptr */ | |
1887 | NULL, /* get_cnt */ | |
1888 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1889 | }; |
1890 | ||
27da23d5 | 1891 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1892 | sizeof(PerlIO_funcs), |
14a5cf38 | 1893 | "bytes", |
2dc2558e | 1894 | 0, |
14a5cf38 JH |
1895 | PERLIO_K_DUMMY, |
1896 | PerlIOUtf8_pushed, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
1900 | NULL, | |
1901 | NULL, | |
1902 | NULL, | |
1903 | NULL, | |
1904 | NULL, | |
1905 | NULL, | |
1906 | NULL, | |
de009b76 AL |
1907 | NULL, |
1908 | NULL, | |
22569500 NIS |
1909 | NULL, /* flush */ |
1910 | NULL, /* fill */ | |
14a5cf38 JH |
1911 | NULL, |
1912 | NULL, | |
1913 | NULL, | |
1914 | NULL, | |
22569500 NIS |
1915 | NULL, /* get_base */ |
1916 | NULL, /* get_bufsiz */ | |
1917 | NULL, /* get_ptr */ | |
1918 | NULL, /* get_cnt */ | |
1919 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1920 | }; |
1921 | ||
1922 | PerlIO * | |
14a5cf38 JH |
1923 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1924 | IV n, const char *mode, int fd, int imode, int perm, | |
1925 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1926 | { |
8772537c AL |
1927 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1928 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1929 | if (tab && tab->Open) |
1930 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1931 | old, narg, args); | |
1932 | SETERRNO(EINVAL, LIB_INVARG); | |
1933 | return NULL; | |
dfebf958 NIS |
1934 | } |
1935 | ||
27da23d5 | 1936 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1937 | sizeof(PerlIO_funcs), |
14a5cf38 | 1938 | "raw", |
2dc2558e | 1939 | 0, |
14a5cf38 JH |
1940 | PERLIO_K_DUMMY, |
1941 | PerlIORaw_pushed, | |
1942 | PerlIOBase_popped, | |
1943 | PerlIORaw_open, | |
1944 | NULL, | |
1945 | NULL, | |
1946 | NULL, | |
1947 | NULL, | |
1948 | NULL, | |
1949 | NULL, | |
1950 | NULL, | |
1951 | NULL, | |
de009b76 AL |
1952 | NULL, |
1953 | NULL, | |
22569500 NIS |
1954 | NULL, /* flush */ |
1955 | NULL, /* fill */ | |
14a5cf38 JH |
1956 | NULL, |
1957 | NULL, | |
1958 | NULL, | |
1959 | NULL, | |
22569500 NIS |
1960 | NULL, /* get_base */ |
1961 | NULL, /* get_bufsiz */ | |
1962 | NULL, /* get_ptr */ | |
1963 | NULL, /* get_cnt */ | |
1964 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1965 | }; |
1966 | /*--------------------------------------------------------------------------------------*/ | |
1967 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1968 | /* |
71200d45 | 1969 | * "Methods" of the "base class" |
14a5cf38 | 1970 | */ |
9e353e3b NIS |
1971 | |
1972 | IV | |
f62ce20a | 1973 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1974 | { |
04892f78 | 1975 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1976 | } |
1977 | ||
f5b9d040 | 1978 | char * |
81428673 | 1979 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1980 | { |
1981 | char *s = buf; | |
81428673 | 1982 | if (PerlIOValid(f)) { |
de009b76 | 1983 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1984 | if (flags & PERLIO_F_APPEND) { |
1985 | *s++ = 'a'; | |
1986 | if (flags & PERLIO_F_CANREAD) { | |
1987 | *s++ = '+'; | |
1988 | } | |
14a5cf38 | 1989 | } |
81428673 NIS |
1990 | else if (flags & PERLIO_F_CANREAD) { |
1991 | *s++ = 'r'; | |
1992 | if (flags & PERLIO_F_CANWRITE) | |
1993 | *s++ = '+'; | |
1994 | } | |
1995 | else if (flags & PERLIO_F_CANWRITE) { | |
1996 | *s++ = 'w'; | |
1997 | if (flags & PERLIO_F_CANREAD) { | |
1998 | *s++ = '+'; | |
1999 | } | |
14a5cf38 | 2000 | } |
35990314 | 2001 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
2002 | if (!(flags & PERLIO_F_CRLF)) |
2003 | *s++ = 'b'; | |
5f1a76d0 | 2004 | #endif |
81428673 | 2005 | } |
14a5cf38 JH |
2006 | *s = '\0'; |
2007 | return buf; | |
f5b9d040 NIS |
2008 | } |
2009 | ||
81428673 | 2010 | |
76ced9ad | 2011 | IV |
2dc2558e | 2012 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2013 | { |
de009b76 | 2014 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2015 | PERL_UNUSED_CONTEXT; |
8772537c | 2016 | PERL_UNUSED_ARG(arg); |
de009b76 | 2017 | |
14a5cf38 JH |
2018 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2019 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2020 | if (tab->Set_ptrcnt != NULL) | |
2021 | l->flags |= PERLIO_F_FASTGETS; | |
2022 | if (mode) { | |
3b6c1aba | 2023 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2024 | mode++; |
2025 | switch (*mode++) { | |
2026 | case 'r': | |
2027 | l->flags |= PERLIO_F_CANREAD; | |
2028 | break; | |
2029 | case 'a': | |
2030 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2031 | break; | |
2032 | case 'w': | |
2033 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2034 | break; | |
2035 | default: | |
93189314 | 2036 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2037 | return -1; |
2038 | } | |
2039 | while (*mode) { | |
2040 | switch (*mode++) { | |
2041 | case '+': | |
2042 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2043 | break; | |
2044 | case 'b': | |
2045 | l->flags &= ~PERLIO_F_CRLF; | |
2046 | break; | |
2047 | case 't': | |
2048 | l->flags |= PERLIO_F_CRLF; | |
2049 | break; | |
2050 | default: | |
93189314 | 2051 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2052 | return -1; |
2053 | } | |
2054 | } | |
2055 | } | |
2056 | else { | |
2057 | if (l->next) { | |
2058 | l->flags |= l->next->flags & | |
2059 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2060 | PERLIO_F_APPEND); | |
2061 | } | |
2062 | } | |
5e2ab84b | 2063 | #if 0 |
14a5cf38 JH |
2064 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
2065 | f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", | |
2066 | l->flags, PerlIO_modestr(f, temp)); | |
5e2ab84b | 2067 | #endif |
14a5cf38 | 2068 | return 0; |
76ced9ad NIS |
2069 | } |
2070 | ||
2071 | IV | |
f62ce20a | 2072 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2073 | { |
96a5add6 | 2074 | PERL_UNUSED_CONTEXT; |
8772537c | 2075 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2076 | return 0; |
760ac839 LW |
2077 | } |
2078 | ||
9e353e3b | 2079 | SSize_t |
f62ce20a | 2080 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2081 | { |
14a5cf38 | 2082 | /* |
71200d45 | 2083 | * Save the position as current head considers it |
14a5cf38 | 2084 | */ |
de009b76 | 2085 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2086 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2087 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2088 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2089 | } |
2090 | ||
f6c77cf1 | 2091 | SSize_t |
f62ce20a | 2092 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2093 | { |
14a5cf38 JH |
2094 | STDCHAR *buf = (STDCHAR *) vbuf; |
2095 | if (f) { | |
263df5f1 JH |
2096 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2097 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2098 | SETERRNO(EBADF, SS_IVCHAN); | |
2099 | return 0; | |
2100 | } | |
14a5cf38 | 2101 | while (count > 0) { |
93c2c2ec IZ |
2102 | get_cnt: |
2103 | { | |
14a5cf38 JH |
2104 | SSize_t avail = PerlIO_get_cnt(f); |
2105 | SSize_t take = 0; | |
2106 | if (avail > 0) | |
eb160463 | 2107 | take = ((SSize_t)count < avail) ? count : avail; |
14a5cf38 JH |
2108 | if (take > 0) { |
2109 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2110 | Copy(ptr, buf, take, STDCHAR); | |
2111 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2112 | count -= take; | |
2113 | buf += take; | |
93c2c2ec IZ |
2114 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2115 | goto get_cnt; | |
14a5cf38 JH |
2116 | } |
2117 | if (count > 0 && avail <= 0) { | |
2118 | if (PerlIO_fill(f) != 0) | |
2119 | break; | |
2120 | } | |
93c2c2ec | 2121 | } |
14a5cf38 JH |
2122 | } |
2123 | return (buf - (STDCHAR *) vbuf); | |
2124 | } | |
f6c77cf1 | 2125 | return 0; |
f6c77cf1 NIS |
2126 | } |
2127 | ||
9e353e3b | 2128 | IV |
f62ce20a | 2129 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2130 | { |
96a5add6 | 2131 | PERL_UNUSED_CONTEXT; |
8772537c | 2132 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2133 | return 0; |
9e353e3b NIS |
2134 | } |
2135 | ||
2136 | IV | |
f62ce20a | 2137 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2138 | { |
96a5add6 | 2139 | PERL_UNUSED_CONTEXT; |
8772537c | 2140 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2141 | return -1; |
06da4f11 NIS |
2142 | } |
2143 | ||
2144 | IV | |
f62ce20a | 2145 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2146 | { |
37725cdc NIS |
2147 | IV code = -1; |
2148 | if (PerlIOValid(f)) { | |
2149 | PerlIO *n = PerlIONext(f); | |
2150 | code = PerlIO_flush(f); | |
2151 | PerlIOBase(f)->flags &= | |
2152 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2153 | while (PerlIOValid(n)) { | |
de009b76 | 2154 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2155 | if (tab && tab->Close) { |
2156 | if ((*tab->Close)(aTHX_ n) != 0) | |
2157 | code = -1; | |
2158 | break; | |
2159 | } | |
2160 | else { | |
2161 | PerlIOBase(n)->flags &= | |
2162 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2163 | } | |
2164 | n = PerlIONext(n); | |
2165 | } | |
2166 | } | |
2167 | else { | |
2168 | SETERRNO(EBADF, SS_IVCHAN); | |
2169 | } | |
14a5cf38 | 2170 | return code; |
9e353e3b NIS |
2171 | } |
2172 | ||
2173 | IV | |
f62ce20a | 2174 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2175 | { |
96a5add6 | 2176 | PERL_UNUSED_CONTEXT; |
04892f78 | 2177 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2178 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2179 | } | |
2180 | return 1; | |
9e353e3b NIS |
2181 | } |
2182 | ||
2183 | IV | |
f62ce20a | 2184 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2185 | { |
96a5add6 | 2186 | PERL_UNUSED_CONTEXT; |
04892f78 | 2187 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2188 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2189 | } | |
2190 | return 1; | |
9e353e3b NIS |
2191 | } |
2192 | ||
2193 | void | |
f62ce20a | 2194 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2195 | { |
04892f78 | 2196 | if (PerlIOValid(f)) { |
dcda55fc | 2197 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2198 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2199 | if (PerlIOValid(n)) |
14a5cf38 JH |
2200 | PerlIO_clearerr(n); |
2201 | } | |
9e353e3b NIS |
2202 | } |
2203 | ||
2204 | void | |
f62ce20a | 2205 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2206 | { |
96a5add6 | 2207 | PERL_UNUSED_CONTEXT; |
04892f78 | 2208 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2209 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2210 | } | |
9e353e3b NIS |
2211 | } |
2212 | ||
93a8090d NIS |
2213 | SV * |
2214 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2215 | { | |
2216 | if (!arg) | |
a0714e2c | 2217 | return NULL; |
93a8090d NIS |
2218 | #ifdef sv_dup |
2219 | if (param) { | |
2220 | return sv_dup(arg, param); | |
2221 | } | |
2222 | else { | |
2223 | return newSVsv(arg); | |
2224 | } | |
2225 | #else | |
1b6737cc | 2226 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2227 | return newSVsv(arg); |
2228 | #endif | |
2229 | } | |
2230 | ||
2231 | PerlIO * | |
ecdeb87c | 2232 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2233 | { |
1b6737cc | 2234 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2235 | if (PerlIOValid(nexto)) { |
de009b76 | 2236 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2237 | if (tab && tab->Dup) |
2238 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2239 | else | |
2240 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2241 | } |
2242 | if (f) { | |
dcda55fc | 2243 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
210e727c | 2244 | SV *arg; |
93a8090d | 2245 | char buf[8]; |
fe5a182c JH |
2246 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2247 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2248 | if (self->Getarg) |
2249 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
2250 | else { | |
a0714e2c | 2251 | arg = NULL; |
93a8090d NIS |
2252 | } |
2253 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); | |
ecdeb87c | 2254 | if (arg) { |
93a8090d NIS |
2255 | SvREFCNT_dec(arg); |
2256 | } | |
2257 | } | |
2258 | return f; | |
2259 | } | |
2260 | ||
168d5872 | 2261 | #ifdef USE_THREADS |
93a8090d | 2262 | perl_mutex PerlIO_mutex; |
93a8090d | 2263 | #endif |
27da23d5 JH |
2264 | |
2265 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ | |
93a8090d | 2266 | |
22c96fc1 NC |
2267 | /* Must be called with PerlIO_mutex locked. */ |
2268 | static void | |
2269 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
2270 | const int old_max = PL_perlio_fd_refcnt_size; | |
f4ae5be6 | 2271 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2272 | int *new_array; |
2273 | ||
2274 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2275 | old_max, new_fd, new_max); | |
2276 | ||
2277 | if (new_fd < old_max) { | |
2278 | return; | |
2279 | } | |
2280 | ||
f4ae5be6 NC |
2281 | assert (new_max > new_fd); |
2282 | ||
22c96fc1 NC |
2283 | new_array |
2284 | = PerlMemShared_realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
2285 | ||
2286 | if (!new_array) { | |
2287 | #ifdef USE_THREADS | |
2288 | MUTEX_UNLOCK(&PerlIO_mutex); | |
2289 | #endif | |
2290 | /* Can't use PerlIO to write as it allocates memory */ | |
2291 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2292 | PL_no_mem, strlen(PL_no_mem)); | |
2293 | my_exit(1); | |
2294 | } | |
2295 | ||
2296 | PL_perlio_fd_refcnt_size = new_max; | |
2297 | PL_perlio_fd_refcnt = new_array; | |
2298 | ||
2299 | PerlIO_debug("Zeroing %p, %d\n", new_array + old_max, new_max - old_max); | |
2300 | ||
2301 | Zero(new_array + old_max, new_max - old_max, int); | |
2302 | } | |
2303 | ||
2304 | ||
93a8090d NIS |
2305 | void |
2306 | PerlIO_init(pTHX) | |
2307 | { | |
2308 | /* Place holder for stdstreams call ??? */ | |
168d5872 | 2309 | #ifdef USE_THREADS |
27da23d5 | 2310 | MUTEX_INIT(&PerlIO_mutex); |
96a5add6 AL |
2311 | #else |
2312 | PERL_UNUSED_CONTEXT; | |
93a8090d NIS |
2313 | #endif |
2314 | } | |
2315 | ||
168d5872 NIS |
2316 | void |
2317 | PerlIOUnix_refcnt_inc(int fd) | |
2318 | { | |
27da23d5 | 2319 | dTHX; |
22c96fc1 | 2320 | if (fd >= 0) { |
97aff369 | 2321 | dVAR; |
22c96fc1 | 2322 | |
168d5872 NIS |
2323 | #ifdef USE_THREADS |
2324 | MUTEX_LOCK(&PerlIO_mutex); | |
2325 | #endif | |
22c96fc1 NC |
2326 | if (fd >= PL_perlio_fd_refcnt_size) |
2327 | S_more_refcounted_fds(aTHX_ fd); | |
2328 | ||
27da23d5 JH |
2329 | PL_perlio_fd_refcnt[fd]++; |
2330 | PerlIO_debug("fd %d refcnt=%d\n",fd,PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2331 | |
168d5872 NIS |
2332 | #ifdef USE_THREADS |
2333 | MUTEX_UNLOCK(&PerlIO_mutex); | |
2334 | #endif | |
2335 | } | |
2336 | } | |
2337 | ||
168d5872 NIS |
2338 | int |
2339 | PerlIOUnix_refcnt_dec(int fd) | |
2340 | { | |
27da23d5 | 2341 | dTHX; |
168d5872 | 2342 | int cnt = 0; |
22c96fc1 | 2343 | if (fd >= 0) { |
97aff369 | 2344 | dVAR; |
168d5872 NIS |
2345 | #ifdef USE_THREADS |
2346 | MUTEX_LOCK(&PerlIO_mutex); | |
2347 | #endif | |
22c96fc1 NC |
2348 | /* XXX should this be a panic? */ |
2349 | if (fd >= PL_perlio_fd_refcnt_size) | |
2350 | S_more_refcounted_fds(aTHX_ fd); | |
2351 | ||
2352 | /* XXX should this be a panic if it drops below 0? */ | |
27da23d5 | 2353 | cnt = --PL_perlio_fd_refcnt[fd]; |
168d5872 NIS |
2354 | PerlIO_debug("fd %d refcnt=%d\n",fd,cnt); |
2355 | #ifdef USE_THREADS | |
2356 | MUTEX_UNLOCK(&PerlIO_mutex); | |
2357 | #endif | |
2358 | } | |
2359 | return cnt; | |
2360 | } | |
2361 | ||
694c95cf JH |
2362 | void |
2363 | PerlIO_cleanup(pTHX) | |
2364 | { | |
97aff369 | 2365 | dVAR; |
694c95cf JH |
2366 | int i; |
2367 | #ifdef USE_ITHREADS | |
9f4bd222 NIS |
2368 | PerlIO_debug("Cleanup layers for %p\n",aTHX); |
2369 | #else | |
2370 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf JH |
2371 | #endif |
2372 | /* Raise STDIN..STDERR refcount so we don't close them */ | |
2373 | for (i=0; i < 3; i++) | |
2374 | PerlIOUnix_refcnt_inc(i); | |
2375 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2376 | /* Restore STDIN..STDERR refcount */ | |
2377 | for (i=0; i < 3; i++) | |
2378 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2379 | |
2380 | if (PL_known_layers) { | |
2381 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2382 | PL_known_layers = NULL; | |
2383 | } | |
27da23d5 | 2384 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2385 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2386 | PL_def_layerlist = NULL; | |
2387 | } | |
694c95cf JH |
2388 | } |
2389 | ||
2390 | ||
2391 | ||
9e353e3b | 2392 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2393 | /* |
71200d45 | 2394 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2395 | */ |
9e353e3b | 2396 | |
14a5cf38 | 2397 | typedef struct { |
22569500 NIS |
2398 | struct _PerlIO base; /* The generic part */ |
2399 | int fd; /* UNIX like file descriptor */ | |
2400 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2401 | } PerlIOUnix; |
2402 | ||
6f9d8c32 | 2403 | int |
9e353e3b | 2404 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2405 | { |
14a5cf38 | 2406 | int oflags = -1; |
3b6c1aba | 2407 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2408 | mode++; |
2409 | switch (*mode) { | |
2410 | case 'r': | |
2411 | oflags = O_RDONLY; | |
2412 | if (*++mode == '+') { | |
2413 | oflags = O_RDWR; | |
2414 | mode++; | |
2415 | } | |
2416 | break; | |
2417 | ||
2418 | case 'w': | |
2419 | oflags = O_CREAT | O_TRUNC; | |
2420 | if (*++mode == '+') { | |
2421 | oflags |= O_RDWR; | |
2422 | mode++; | |
2423 | } | |
2424 | else | |
2425 | oflags |= O_WRONLY; | |
2426 | break; | |
2427 | ||
2428 | case 'a': | |
2429 | oflags = O_CREAT | O_APPEND; | |
2430 | if (*++mode == '+') { | |
2431 | oflags |= O_RDWR; | |
2432 | mode++; | |
2433 | } | |
2434 | else | |
2435 | oflags |= O_WRONLY; | |
2436 | break; | |
2437 | } | |
2438 | if (*mode == 'b') { | |
2439 | oflags |= O_BINARY; | |
2440 | oflags &= ~O_TEXT; | |
2441 | mode++; | |
2442 | } | |
2443 | else if (*mode == 't') { | |
2444 | oflags |= O_TEXT; | |
2445 | oflags &= ~O_BINARY; | |
2446 | mode++; | |
2447 | } | |
2448 | /* | |
71200d45 | 2449 | * Always open in binary mode |
14a5cf38 JH |
2450 | */ |
2451 | oflags |= O_BINARY; | |
2452 | if (*mode || oflags == -1) { | |
93189314 | 2453 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2454 | oflags = -1; |
2455 | } | |
2456 | return oflags; | |
9e353e3b NIS |
2457 | } |
2458 | ||
2459 | IV | |
f62ce20a | 2460 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2461 | { |
96a5add6 | 2462 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2463 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2464 | } |
2465 | ||
aa063c35 NIS |
2466 | static void |
2467 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2468 | { |
de009b76 | 2469 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2470 | #if defined(WIN32) |
aa063c35 NIS |
2471 | Stat_t st; |
2472 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2473 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2474 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2475 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2476 | } | |
aa063c35 NIS |
2477 | else { |
2478 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2479 | } | |
6caa5a9c NIS |
2480 | } |
2481 | #endif | |
aa063c35 NIS |
2482 | s->fd = fd; |
2483 | s->oflags = imode; | |
2484 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2485 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2486 | } |
2487 | ||
2488 | IV | |
2489 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2490 | { | |
2491 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2492 | if (*PerlIONext(f)) { |
4b069b44 | 2493 | /* We never call down so do any pending stuff now */ |
03c0554d | 2494 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2495 | /* |
71200d45 | 2496 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2497 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2498 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2499 | */ |
acbd16bf | 2500 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2501 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2502 | } |
2503 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2504 | |
14a5cf38 | 2505 | return code; |
4b803d04 NIS |
2506 | } |
2507 | ||
c2fcde81 JH |
2508 | IV |
2509 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2510 | { | |
de009b76 | 2511 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2512 | Off_t new_loc; |
96a5add6 | 2513 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2514 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2515 | #ifdef ESPIPE | |
2516 | SETERRNO(ESPIPE, LIB_INVARG); | |
2517 | #else | |
2518 | SETERRNO(EINVAL, LIB_INVARG); | |
2519 | #endif | |
2520 | return -1; | |
2521 | } | |
0723351e NC |
2522 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2523 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2524 | return -1; |
c2fcde81 JH |
2525 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2526 | return 0; | |
2527 | } | |
2528 | ||
9e353e3b | 2529 | PerlIO * |
14a5cf38 JH |
2530 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2531 | IV n, const char *mode, int fd, int imode, | |
2532 | int perm, PerlIO *f, int narg, SV **args) | |
2533 | { | |
d9dac8cd | 2534 | if (PerlIOValid(f)) { |
14a5cf38 | 2535 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2536 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2537 | } |
2538 | if (narg > 0) { | |
3b6c1aba | 2539 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2540 | mode++; |
2541 | else { | |
2542 | imode = PerlIOUnix_oflags(mode); | |
2543 | perm = 0666; | |
2544 | } | |
2545 | if (imode != -1) { | |
e62f0680 | 2546 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2547 | fd = PerlLIO_open3(path, imode, perm); |
2548 | } | |
2549 | } | |
2550 | if (fd >= 0) { | |
3b6c1aba | 2551 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2552 | mode++; |
2553 | if (!f) { | |
2554 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2555 | } |
2556 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2557 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2558 | return NULL; | |
2559 | } | |
d9dac8cd | 2560 | } |
aa063c35 | 2561 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2562 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2563 | if (*mode == IoTYPE_APPEND) |
2564 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2565 | return f; |
2566 | } | |
2567 | else { | |
2568 | if (f) { | |
bb263b4e | 2569 | /*EMPTY*/; |
14a5cf38 | 2570 | /* |
71200d45 | 2571 | * FIXME: pop layers ??? |
14a5cf38 JH |
2572 | */ |
2573 | } | |
2574 | return NULL; | |
2575 | } | |
9e353e3b NIS |
2576 | } |
2577 | ||
71200d45 | 2578 | PerlIO * |
ecdeb87c | 2579 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2580 | { |
dcda55fc | 2581 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2582 | int fd = os->fd; |
ecdeb87c NIS |
2583 | if (flags & PERLIO_DUP_FD) { |
2584 | fd = PerlLIO_dup(fd); | |
2585 | } | |
22c96fc1 | 2586 | if (fd >= 0) { |
ecdeb87c | 2587 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2588 | if (f) { |
2589 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2590 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2591 | return f; |
2592 | } | |
71200d45 NIS |
2593 | } |
2594 | return NULL; | |
2595 | } | |
2596 | ||
2597 | ||
9e353e3b | 2598 | SSize_t |
f62ce20a | 2599 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2600 | { |
97aff369 | 2601 | dVAR; |
de009b76 | 2602 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2603 | #ifdef PERLIO_STD_SPECIAL |
2604 | if (fd == 0) | |
2605 | return PERLIO_STD_IN(fd, vbuf, count); | |
2606 | #endif | |
81428673 | 2607 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2608 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2609 | return 0; |
1fd8f4ce | 2610 | } |
14a5cf38 | 2611 | while (1) { |
b464bac0 | 2612 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2613 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2614 | if (len < 0) { |
2615 | if (errno != EAGAIN) { | |
2616 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2617 | } | |
2618 | } | |
2619 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2620 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2621 | SETERRNO(0,0); |
2622 | } | |
14a5cf38 JH |
2623 | return len; |
2624 | } | |
2625 | PERL_ASYNC_CHECK(); | |
2626 | } | |
b464bac0 | 2627 | /*NOTREACHED*/ |
9e353e3b NIS |
2628 | } |
2629 | ||
2630 | SSize_t | |
f62ce20a | 2631 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2632 | { |
97aff369 | 2633 | dVAR; |
de009b76 | 2634 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2635 | #ifdef PERLIO_STD_SPECIAL |
2636 | if (fd == 1 || fd == 2) | |
2637 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2638 | #endif | |
14a5cf38 | 2639 | while (1) { |
de009b76 | 2640 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2641 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2642 | if (len < 0) { |
2643 | if (errno != EAGAIN) { | |
2644 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2645 | } | |
2646 | } | |
14a5cf38 JH |
2647 | return len; |
2648 | } | |
2649 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2650 | } |
1b6737cc | 2651 | /*NOTREACHED*/ |
9e353e3b NIS |
2652 | } |
2653 | ||
9e353e3b | 2654 | Off_t |
f62ce20a | 2655 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2656 | { |
96a5add6 AL |
2657 | PERL_UNUSED_CONTEXT; |
2658 | ||
14a5cf38 | 2659 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2660 | } |
2661 | ||
71200d45 | 2662 | |
9e353e3b | 2663 | IV |
f62ce20a | 2664 | PerlIOUnix_close(pTHX_ PerlIO *f) |
9e353e3b | 2665 | { |
97aff369 | 2666 | dVAR; |
de009b76 | 2667 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2668 | int code = 0; |
168d5872 NIS |
2669 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2670 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2671 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2672 | return 0; | |
22569500 | 2673 | } |
93a8090d NIS |
2674 | } |
2675 | else { | |
93189314 | 2676 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2677 | return -1; |
2678 | } | |
14a5cf38 JH |
2679 | while (PerlLIO_close(fd) != 0) { |
2680 | if (errno != EINTR) { | |
2681 | code = -1; | |
2682 | break; | |
2683 | } | |
2684 | PERL_ASYNC_CHECK(); | |
2685 | } | |
2686 | if (code == 0) { | |
2687 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2688 | } | |
2689 | return code; | |
9e353e3b NIS |
2690 | } |
2691 | ||
27da23d5 | 2692 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2693 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2694 | "unix", |
2695 | sizeof(PerlIOUnix), | |
2696 | PERLIO_K_RAW, | |
2697 | PerlIOUnix_pushed, | |
44798d05 | 2698 | PerlIOBase_popped, |
14a5cf38 | 2699 | PerlIOUnix_open, |
86e05cf2 | 2700 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2701 | NULL, |
2702 | PerlIOUnix_fileno, | |
71200d45 | 2703 | PerlIOUnix_dup, |
14a5cf38 JH |
2704 | PerlIOUnix_read, |
2705 | PerlIOBase_unread, | |
2706 | PerlIOUnix_write, | |
2707 | PerlIOUnix_seek, | |
2708 | PerlIOUnix_tell, | |
2709 | PerlIOUnix_close, | |
22569500 NIS |
2710 | PerlIOBase_noop_ok, /* flush */ |
2711 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2712 | PerlIOBase_eof, |
2713 | PerlIOBase_error, | |
2714 | PerlIOBase_clearerr, | |
2715 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2716 | NULL, /* get_base */ |
2717 | NULL, /* get_bufsiz */ | |
2718 | NULL, /* get_ptr */ | |
2719 | NULL, /* get_cnt */ | |
2720 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2721 | }; |
2722 | ||
2723 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2724 | /* |
71200d45 | 2725 | * stdio as a layer |
14a5cf38 | 2726 | */ |
9e353e3b | 2727 | |
313e59c8 NIS |
2728 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2729 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2730 | broken by the last second glibc 2.3 fix | |
2731 | */ | |
2732 | #define STDIO_BUFFER_WRITABLE | |
2733 | #endif | |
2734 | ||
2735 | ||
14a5cf38 JH |
2736 | typedef struct { |
2737 | struct _PerlIO base; | |
22569500 | 2738 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2739 | } PerlIOStdio; |
2740 | ||
2741 | IV | |
f62ce20a | 2742 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2743 | { |
96a5add6 AL |
2744 | PERL_UNUSED_CONTEXT; |
2745 | ||
c4420975 AL |
2746 | if (PerlIOValid(f)) { |
2747 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2748 | if (s) | |
2749 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2750 | } |
2751 | errno = EBADF; | |
2752 | return -1; | |
9e353e3b NIS |
2753 | } |
2754 | ||
766a733e | 2755 | char * |
14a5cf38 JH |
2756 | PerlIOStdio_mode(const char *mode, char *tmode) |
2757 | { | |
de009b76 | 2758 | char * const ret = tmode; |
a0625d38 SR |
2759 | if (mode) { |
2760 | while (*mode) { | |
2761 | *tmode++ = *mode++; | |
2762 | } | |
14a5cf38 | 2763 | } |
95005ad8 | 2764 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2765 | *tmode++ = 'b'; |
2766 | #endif | |
14a5cf38 JH |
2767 | *tmode = '\0'; |
2768 | return ret; | |
2769 | } | |
2770 | ||
4b803d04 | 2771 | IV |
2dc2558e | 2772 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2773 | { |
1fd8f4ce NIS |
2774 | PerlIO *n; |
2775 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2776 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2777 | if (toptab == tab) { |
2778 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2779 | PerlIO_pop(aTHX_ f); | |
2780 | return 0; | |
2781 | } else { | |
de009b76 | 2782 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2783 | char tmode[8]; |
2784 | FILE *stdio; | |
81428673 | 2785 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2786 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2787 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2788 | /* We never call down so do any pending stuff now */ | |
2789 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2790 | } |
1fd8f4ce NIS |
2791 | else { |
2792 | return -1; | |
2793 | } | |
2794 | } | |
14a5cf38 | 2795 | } |
2dc2558e | 2796 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2797 | } |
2798 | ||
22569500 | 2799 | |
9e353e3b | 2800 | PerlIO * |
4b069b44 | 2801 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2802 | { |
14a5cf38 JH |
2803 | dTHX; |
2804 | PerlIO *f = NULL; | |
2805 | if (stdio) { | |
22569500 | 2806 | PerlIOStdio *s; |
4b069b44 NIS |
2807 | if (!mode || !*mode) { |
2808 | /* We need to probe to see how we can open the stream | |
2809 | so start with read/write and then try write and read | |
2810 | we dup() so that we can fclose without loosing the fd. | |
2811 | ||
2812 | Note that the errno value set by a failing fdopen | |
2813 | varies between stdio implementations. | |
2814 | */ | |
de009b76 | 2815 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2816 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2817 | if (!f2) { |
a33cf58c | 2818 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2819 | } |
2820 | if (!f2) { | |
a33cf58c | 2821 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2822 | } |
2823 | if (!f2) { | |
2824 | /* Don't seem to be able to open */ | |
2825 | PerlLIO_close(fd); | |
2826 | return f; | |
2827 | } | |
2828 | fclose(f2); | |
22569500 | 2829 | } |
a0714e2c | 2830 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2831 | s = PerlIOSelf(f, PerlIOStdio); |
2832 | s->stdio = stdio; | |
2833 | } | |
14a5cf38 JH |
2834 | } |
2835 | return f; | |
9e353e3b NIS |
2836 | } |
2837 | ||
2838 | PerlIO * | |
14a5cf38 JH |
2839 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2840 | IV n, const char *mode, int fd, int imode, | |
2841 | int perm, PerlIO *f, int narg, SV **args) | |
2842 | { | |
2843 | char tmode[8]; | |
d9dac8cd | 2844 | if (PerlIOValid(f)) { |
dcda55fc AL |
2845 | const char * const path = SvPV_nolen_const(*args); |
2846 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2847 | FILE *stdio; |
2848 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2849 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2850 | s->stdio); |
2851 | if (!s->stdio) | |
2852 | return NULL; | |
2853 | s->stdio = stdio; | |
1751d015 | 2854 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2855 | return f; |
2856 | } | |
2857 | else { | |
2858 | if (narg > 0) { | |
dcda55fc | 2859 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2860 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2861 | mode++; |
2862 | fd = PerlLIO_open3(path, imode, perm); | |
2863 | } | |
2864 | else { | |
95005ad8 GH |
2865 | FILE *stdio; |
2866 | bool appended = FALSE; | |
2867 | #ifdef __CYGWIN__ | |
2868 | /* Cygwin wants its 'b' early. */ | |
2869 | appended = TRUE; | |
2870 | mode = PerlIOStdio_mode(mode, tmode); | |
2871 | #endif | |
2872 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac | 2873 | if (stdio) { |
6f0313ac JH |
2874 | if (!f) { |
2875 | f = PerlIO_allocate(aTHX); | |
2876 | } | |
95005ad8 GH |
2877 | if (!appended) |
2878 | mode = PerlIOStdio_mode(mode, tmode); | |
2879 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2880 | if (f) { | |
0f0f9e2b JH |
2881 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2882 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
2883 | } else { | |
2884 | PerlSIO_fclose(stdio); | |
6f0313ac JH |
2885 | } |
2886 | return f; | |
2887 | } | |
2888 | else { | |
2889 | return NULL; | |
2890 | } | |
14a5cf38 JH |
2891 | } |
2892 | } | |
2893 | if (fd >= 0) { | |
2894 | FILE *stdio = NULL; | |
2895 | int init = 0; | |
3b6c1aba | 2896 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2897 | init = 1; |
2898 | mode++; | |
2899 | } | |
2900 | if (init) { | |
2901 | switch (fd) { | |
2902 | case 0: | |
2903 | stdio = PerlSIO_stdin; | |
2904 | break; | |
2905 | case 1: | |
2906 | stdio = PerlSIO_stdout; | |
2907 | break; | |
2908 | case 2: | |
2909 | stdio = PerlSIO_stderr; | |
2910 | break; | |
2911 | } | |
2912 | } | |
2913 | else { | |
2914 | stdio = PerlSIO_fdopen(fd, mode = | |
2915 | PerlIOStdio_mode(mode, tmode)); | |
2916 | } | |
2917 | if (stdio) { | |
d9dac8cd NIS |
2918 | if (!f) { |
2919 | f = PerlIO_allocate(aTHX); | |
2920 | } | |
a33cf58c | 2921 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
1a159fba JH |
2922 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2923 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
a33cf58c | 2924 | } |
14a5cf38 JH |
2925 | return f; |
2926 | } | |
2927 | } | |
2928 | } | |
ee518936 | 2929 | return NULL; |
9e353e3b NIS |
2930 | } |
2931 | ||
1751d015 | 2932 | PerlIO * |
ecdeb87c | 2933 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
2934 | { |
2935 | /* This assumes no layers underneath - which is what | |
2936 | happens, but is not how I remember it. NI-S 2001/10/16 | |
2937 | */ | |
ecdeb87c | 2938 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 2939 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 2940 | const int fd = fileno(stdio); |
9217ff3f | 2941 | char mode[8]; |
ecdeb87c | 2942 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 2943 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
2944 | if (dfd >= 0) { |
2945 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
2946 | goto set_this; | |
ecdeb87c NIS |
2947 | } |
2948 | else { | |
bb263b4e | 2949 | /*EMPTY*/; |
ecdeb87c NIS |
2950 | /* FIXME: To avoid messy error recovery if dup fails |
2951 | re-use the existing stdio as though flag was not set | |
2952 | */ | |
2953 | } | |
2954 | } | |
9217ff3f NIS |
2955 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
2956 | set_this: | |
694c95cf JH |
2957 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2958 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
1751d015 NIS |
2959 | } |
2960 | return f; | |
2961 | } | |
2962 | ||
0d7a5398 NIS |
2963 | static int |
2964 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
2965 | { | |
96a5add6 AL |
2966 | PERL_UNUSED_CONTEXT; |
2967 | ||
0d7a5398 | 2968 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 2969 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 2970 | */ |
ef8eacb8 AT |
2971 | # if defined(__UCLIBC__) |
2972 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
2973 | f->__filedes = -1; | |
2974 | return 1; | |
2975 | # elif defined(__GLIBC__) | |
0d7a5398 | 2976 | /* There may be a better way for GLIBC: |
37725cdc | 2977 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
2978 | */ |
2979 | f->_fileno = -1; | |
2980 | return 1; | |
2981 | # elif defined(__sun__) | |
cfedb851 | 2982 | return 0; |
0d7a5398 NIS |
2983 | # elif defined(__hpux) |
2984 | f->__fileH = 0xff; | |
2985 | f->__fileL = 0xff; | |
2986 | return 1; | |
9837d373 | 2987 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 2988 | your platform does not have special entry try this one. |
9837d373 NIS |
2989 | [For OSF only have confirmation for Tru64 (alpha) |
2990 | but assume other OSFs will be similar.] | |
37725cdc | 2991 | */ |
9837d373 | 2992 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
2993 | f->_file = -1; |
2994 | return 1; | |
2995 | # elif defined(__FreeBSD__) | |
2996 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
2997 | - we could insert a dummy func in the _close function entry |
2998 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
2999 | */ |
3000 | f->_file = -1; | |
0c49ea6a SU |
3001 | return 1; |
3002 | # elif defined(__OpenBSD__) | |
3003 | /* There may be a better way on OpenBSD: | |
3004 | - we could insert a dummy func in the _close function entry | |
3005 | f->_close = (int (*)(void *)) dummy_close; | |
3006 | */ | |
3007 | f->_file = -1; | |
0d7a5398 | 3008 | return 1; |
59ad941d IZ |
3009 | # elif defined(__EMX__) |
3010 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3011 | f->_handle = -1; | |
3012 | return 1; | |
0d7a5398 NIS |
3013 | # elif defined(__CYGWIN__) |
3014 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3015 | - we could insert a dummy func in the _close function entry |
3016 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3017 | */ |
3018 | f->_file = -1; | |
3019 | return 1; | |
3020 | # elif defined(WIN32) | |
3021 | # if defined(__BORLANDC__) | |
3022 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3023 | # elif defined(UNDER_CE) |
3024 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3025 | structure at all | |
3026 | */ | |
0d7a5398 NIS |
3027 | # else |
3028 | f->_file = -1; | |
3029 | # endif | |
3030 | return 1; | |
3031 | # else | |
3032 | #if 0 | |
37725cdc | 3033 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3034 | (which isn't thread safe) instead |
37725cdc | 3035 | */ |
0d7a5398 NIS |
3036 | # error "Don't know how to set FILE.fileno on your platform" |
3037 | #endif | |
8772537c | 3038 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3039 | return 0; |
3040 | # endif | |
3041 | } | |
3042 | ||
1751d015 | 3043 | IV |
f62ce20a | 3044 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3045 | { |
c4420975 | 3046 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3047 | if (!stdio) { |
3048 | errno = EBADF; | |
3049 | return -1; | |
3050 | } | |
9217ff3f | 3051 | else { |
de009b76 | 3052 | const int fd = fileno(stdio); |
0d7a5398 | 3053 | int invalidate = 0; |
bbfd922f | 3054 | IV result = 0; |
0d7a5398 NIS |
3055 | int saveerr = 0; |
3056 | int dupfd = 0; | |
3057 | #ifdef SOCKS5_VERSION_NAME | |
37725cdc NIS |
3058 | /* Socks lib overrides close() but stdio isn't linked to |
3059 | that library (though we are) - so we must call close() | |
3060 | on sockets on stdio's behalf. | |
3061 | */ | |
0d7a5398 NIS |
3062 | int optval; |
3063 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3064 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3065 | invalidate = 1; |
0d7a5398 | 3066 | #endif |
6b4ce6c8 | 3067 | if (PerlIOUnix_refcnt_dec(fd) > 0) /* File descriptor still in use */ |
0d7a5398 | 3068 | invalidate = 1; |
0d7a5398 | 3069 | if (invalidate) { |
6b4ce6c8 AL |
3070 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3071 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3072 | return 0; | |
3073 | if (stdio == stdout || stdio == stderr) | |
3074 | return PerlIO_flush(f); | |
37725cdc NIS |
3075 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3076 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3077 | fileno slot of the FILE * | |
3078 | */ | |
bbfd922f | 3079 | result = PerlIO_flush(f); |
0d7a5398 | 3080 | saveerr = errno; |
6b4ce6c8 AL |
3081 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
3082 | if (!invalidate) | |
3083 | dupfd = PerlLIO_dup(fd); | |
37725cdc | 3084 | } |
0d7a5398 | 3085 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3086 | /* We treat error from stdio as success if we invalidated |
3087 | errno may NOT be expected EBADF | |
e8529473 NIS |
3088 | */ |
3089 | if (invalidate && result != 0) { | |
0d7a5398 NIS |
3090 | errno = saveerr; |
3091 | result = 0; | |
37725cdc | 3092 | } |
6b4ce6c8 AL |
3093 | #ifdef SOCKS5_VERSION_NAME |
3094 | /* in SOCKS' case, let close() determine return value */ | |
3095 | result = close(fd); | |
3096 | #endif | |
0d7a5398 NIS |
3097 | if (dupfd) { |
3098 | PerlLIO_dup2(dupfd,fd); | |
8a521f28 | 3099 | PerlLIO_close(dupfd); |
9217ff3f NIS |
3100 | } |
3101 | return result; | |
37725cdc | 3102 | } |
1751d015 NIS |
3103 | } |
3104 | ||
9e353e3b | 3105 | SSize_t |
f62ce20a | 3106 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3107 | { |
97aff369 | 3108 | dVAR; |
c4420975 | 3109 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3110 | SSize_t got = 0; |
4d948241 NIS |
3111 | for (;;) { |
3112 | if (count == 1) { | |
3113 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3114 | /* | |
3115 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3116 | * stdio does not do that for fread() | |
3117 | */ | |
de009b76 | 3118 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3119 | if (ch != EOF) { |
3120 | *buf = ch; | |
3121 | got = 1; | |
3122 | } | |
14a5cf38 | 3123 | } |
4d948241 NIS |
3124 | else |
3125 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3126 | if (got == 0 && PerlSIO_ferror(s)) |
3127 | got = -1; | |
42a7a32f | 3128 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3129 | break; |
3130 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3131 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3132 | } |
14a5cf38 | 3133 | return got; |
9e353e3b NIS |
3134 | } |
3135 | ||
3136 | SSize_t | |
f62ce20a | 3137 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3138 | { |
14a5cf38 | 3139 | SSize_t unread = 0; |
c4420975 | 3140 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3141 | |
313e59c8 | 3142 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3143 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3144 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3145 | STDCHAR *base = PerlIO_get_base(f); | |
3146 | SSize_t cnt = PerlIO_get_cnt(f); | |
3147 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3148 | SSize_t avail = ptr - base; | |
3149 | if (avail > 0) { | |
3150 | if (avail > count) { | |
3151 | avail = count; | |
3152 | } | |
3153 | ptr -= avail; | |
3154 | Move(buf-avail,ptr,avail,STDCHAR); | |
3155 | count -= avail; | |
3156 | unread += avail; | |
3157 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3158 | if (PerlSIO_feof(s) && unread >= 0) |
3159 | PerlSIO_clearerr(s); | |
3160 | } | |
3161 | } | |
313e59c8 NIS |
3162 | else |
3163 | #endif | |
3164 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3165 | /* We can get pointer to buffer but not its base |
3166 | Do ungetc() but check chars are ending up in the | |
3167 | buffer | |
3168 | */ | |
3169 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3170 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3171 | while (count > 0) { | |
de009b76 | 3172 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3173 | if (ungetc(ch,s) != ch) { |
3174 | /* ungetc did not work */ | |
3175 | break; | |
3176 | } | |
3177 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3178 | /* Did not change pointer as expected */ | |
3179 | fgetc(s); /* get char back again */ | |
3180 | break; | |
3181 | } | |
3182 | /* It worked ! */ | |
3183 | count--; | |
3184 | unread++; | |
93679785 NIS |
3185 | } |
3186 | } | |
3187 | ||
3188 | if (count > 0) { | |
3189 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3190 | } |
3191 | return unread; | |
9e353e3b NIS |
3192 | } |
3193 | ||
3194 | SSize_t | |
f62ce20a | 3195 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3196 | { |
97aff369 | 3197 | dVAR; |
4d948241 NIS |
3198 | SSize_t got; |
3199 | for (;;) { | |
3200 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3201 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3202 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3203 | break; |
3204 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3205 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3206 | } |
3207 | return got; | |
9e353e3b NIS |
3208 | } |
3209 | ||
94a175e1 | 3210 | IV |
f62ce20a | 3211 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3212 | { |
c4420975 | 3213 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3214 | PERL_UNUSED_CONTEXT; |
3215 | ||
94a175e1 | 3216 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3217 | } |
3218 | ||
3219 | Off_t | |
f62ce20a | 3220 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3221 | { |
c4420975 | 3222 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3223 | PERL_UNUSED_CONTEXT; |
3224 | ||
94a175e1 | 3225 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3226 | } |
3227 | ||
3228 | IV | |
f62ce20a | 3229 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3230 | { |
c4420975 | 3231 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3232 | PERL_UNUSED_CONTEXT; |
3233 | ||
14a5cf38 JH |
3234 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3235 | return PerlSIO_fflush(stdio); | |
3236 | } | |
3237 | else { | |
bb263b4e | 3238 | /*EMPTY*/; |
88b61e10 | 3239 | #if 0 |
14a5cf38 JH |
3240 | /* |
3241 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3242 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3243 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3244 | * layer read-to-read |
14a5cf38 JH |
3245 | */ |
3246 | /* | |
71200d45 | 3247 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3248 | */ |
79852593 | 3249 | const int err = errno; |
14a5cf38 JH |
3250 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
3251 | errno = err; | |
88b61e10 | 3252 | #endif |
14a5cf38 JH |
3253 | } |
3254 | return 0; | |
9e353e3b NIS |
3255 | } |
3256 | ||
3257 | IV | |
f62ce20a | 3258 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3259 | { |
96a5add6 AL |
3260 | PERL_UNUSED_CONTEXT; |
3261 | ||
14a5cf38 | 3262 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3263 | } |
3264 | ||
3265 | IV | |
f62ce20a | 3266 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3267 | { |
96a5add6 AL |
3268 | PERL_UNUSED_CONTEXT; |
3269 | ||
263df5f1 | 3270 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3271 | } |
3272 | ||
3273 | void | |
f62ce20a | 3274 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3275 | { |
96a5add6 AL |
3276 | PERL_UNUSED_CONTEXT; |
3277 | ||
14a5cf38 | 3278 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3279 | } |
3280 | ||
3281 | void | |
f62ce20a | 3282 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3283 | { |
96a5add6 AL |
3284 | PERL_UNUSED_CONTEXT; |
3285 | ||
9e353e3b | 3286 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3287 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3288 | #else |
bd61b366 | 3289 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3290 | #endif |
3291 | } | |
3292 | ||
3293 | #ifdef FILE_base | |
3294 | STDCHAR * | |
f62ce20a | 3295 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3296 | { |
c4420975 | 3297 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3298 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3299 | } |
3300 | ||
3301 | Size_t | |
f62ce20a | 3302 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3303 | { |
c4420975 | 3304 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3305 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3306 | } |
3307 | #endif | |
3308 | ||
3309 | #ifdef USE_STDIO_PTR | |
3310 | STDCHAR * | |
f62ce20a | 3311 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3312 | { |
c4420975 | 3313 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3314 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3315 | } |
3316 | ||
3317 | SSize_t | |
f62ce20a | 3318 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3319 | { |
c4420975 | 3320 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3321 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3322 | } |
3323 | ||
3324 | void | |
f62ce20a | 3325 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3326 | { |
c4420975 | 3327 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3328 | if (ptr != NULL) { |
9e353e3b | 3329 | #ifdef STDIO_PTR_LVALUE |
22569500 | 3330 | PerlSIO_set_ptr(stdio, (void*)ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3331 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
14a5cf38 | 3332 | if (PerlSIO_get_cnt(stdio) != (cnt)) { |
14a5cf38 JH |
3333 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
3334 | } | |
9e353e3b NIS |
3335 | #endif |
3336 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3337 | /* |
71200d45 | 3338 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3339 | */ |
3340 | return; | |
9e353e3b | 3341 | #endif |
22569500 | 3342 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3343 | PerlProc_abort(); |
22569500 | 3344 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3345 | } |
3346 | /* | |
71200d45 | 3347 | * Now (or only) set cnt |
14a5cf38 | 3348 | */ |
9e353e3b | 3349 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3350 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3351 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3352 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3353 | PerlSIO_set_ptr(stdio, |
3354 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3355 | cnt)); | |
22569500 | 3356 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3357 | PerlProc_abort(); |
22569500 NIS |
3358 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3359 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3360 | } |
3361 | ||
93679785 | 3362 | |
9e353e3b NIS |
3363 | #endif |
3364 | ||
93679785 NIS |
3365 | IV |
3366 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3367 | { | |
c4420975 | 3368 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3369 | int c; |
96a5add6 AL |
3370 | PERL_UNUSED_CONTEXT; |
3371 | ||
93679785 NIS |
3372 | /* |
3373 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3374 | */ | |
3375 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3376 | if (PerlSIO_fflush(stdio) != 0) | |
3377 | return EOF; | |
3378 | } | |
3379 | c = PerlSIO_fgetc(stdio); | |
3380 | if (c == EOF) | |
3381 | return EOF; | |
3382 | ||
3383 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3384 | |
3385 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3386 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3387 | /* Fake ungetc() to the real buffer in case system's ungetc |
3388 | goes elsewhere | |
3389 | */ | |
3390 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3391 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3392 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3393 | if (ptr == base+1) { | |
3394 | *--ptr = (STDCHAR) c; | |
3395 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3396 | if (PerlSIO_feof(stdio)) | |
3397 | PerlSIO_clearerr(stdio); | |
3398 | return 0; | |
3399 | } | |
3400 | } | |
313e59c8 NIS |
3401 | else |
3402 | #endif | |
3403 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3404 | STDCHAR ch = c; |
3405 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3406 | return 0; | |
3407 | } | |
3408 | } | |
93679785 NIS |
3409 | #endif |
3410 | ||
3411 | #if defined(VMS) | |
3412 | /* An ungetc()d char is handled separately from the regular | |
3413 | * buffer, so we stuff it in the buffer ourselves. | |
3414 | * Should never get called as should hit code above | |
3415 | */ | |
bad9695d NIS |
3416 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3417 | (*stdio)->_cnt++; | |
93679785 NIS |
3418 | #else |
3419 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3420 | using ungetc(). |
93679785 NIS |
3421 | */ |
3422 | if (PerlSIO_ungetc(c, stdio) != c) | |
3423 | return EOF; | |
3424 | #endif | |
3425 | return 0; | |
3426 | } | |
3427 | ||
3428 | ||
3429 | ||
27da23d5 | 3430 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3431 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3432 | "stdio", |
3433 | sizeof(PerlIOStdio), | |
86e05cf2 | 3434 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3435 | PerlIOStdio_pushed, |
44798d05 | 3436 | PerlIOBase_popped, |
14a5cf38 | 3437 | PerlIOStdio_open, |
86e05cf2 | 3438 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3439 | NULL, |
3440 | PerlIOStdio_fileno, | |
71200d45 | 3441 | PerlIOStdio_dup, |
14a5cf38 JH |
3442 | PerlIOStdio_read, |
3443 | PerlIOStdio_unread, | |
3444 | PerlIOStdio_write, | |
3445 | PerlIOStdio_seek, | |
3446 | PerlIOStdio_tell, | |
3447 | PerlIOStdio_close, | |
3448 | PerlIOStdio_flush, | |
3449 | PerlIOStdio_fill, | |
3450 | PerlIOStdio_eof, | |
3451 | PerlIOStdio_error, | |
3452 | PerlIOStdio_clearerr, | |
3453 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3454 | #ifdef FILE_base |
14a5cf38 JH |
3455 | PerlIOStdio_get_base, |
3456 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3457 | #else |
14a5cf38 JH |
3458 | NULL, |
3459 | NULL, | |
9e353e3b NIS |
3460 | #endif |
3461 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3462 | PerlIOStdio_get_ptr, |
3463 | PerlIOStdio_get_cnt, | |
15b61c98 | 3464 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3465 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3466 | # else |
3467 | NULL, | |
3468 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3469 | #else | |
3470 | NULL, | |
14a5cf38 JH |
3471 | NULL, |
3472 | NULL, | |
15b61c98 | 3473 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3474 | }; |
3475 | ||
b9d6bf13 JH |
3476 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3477 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3478 | FILE * |
81428673 | 3479 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3480 | { |
e87a358a | 3481 | dTHX; |
81428673 NIS |
3482 | FILE *stdio = NULL; |
3483 | if (PerlIOValid(f)) { | |
3484 | char buf[8]; | |
3485 | PerlIO_flush(f); | |
3486 | if (!mode || !*mode) { | |
3487 | mode = PerlIO_modestr(f, buf); | |
3488 | } | |
3489 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3490 | if (stdio) { | |
3491 | PerlIOl *l = *f; | |
9f75cc58 | 3492 | PerlIO *f2; |
81428673 NIS |
3493 | /* De-link any lower layers so new :stdio sticks */ |
3494 | *f = NULL; | |
a0714e2c | 3495 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3496 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 NIS |
3497 | s->stdio = stdio; |
3498 | /* Link previous lower layers under new one */ | |
3499 | *PerlIONext(f) = l; | |
3500 | } | |
3501 | else { | |
3502 | /* restore layers list */ | |
3503 | *f = l; | |
3504 | } | |
a33cf58c | 3505 | } |
14a5cf38 JH |
3506 | } |
3507 | return stdio; | |
9e353e3b NIS |
3508 | } |
3509 | ||
81428673 | 3510 | |
9e353e3b NIS |
3511 | FILE * |
3512 | PerlIO_findFILE(PerlIO *f) | |
3513 | { | |
14a5cf38 JH |
3514 | PerlIOl *l = *f; |
3515 | while (l) { | |
3516 | if (l->tab == &PerlIO_stdio) { | |
3517 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3518 | return s->stdio; | |
3519 | } | |
3520 | l = *PerlIONext(&l); | |
f7e7eb72 | 3521 | } |
4b069b44 | 3522 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bd61b366 | 3523 | return PerlIO_exportFILE(f, NULL); |
9e353e3b NIS |
3524 | } |
3525 | ||
b9d6bf13 | 3526 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3527 | void |
3528 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3529 | { | |
27da23d5 | 3530 | dVAR; |
22569500 NIS |
3531 | PerlIOl *l; |
3532 | while ((l = *p)) { | |
3533 | if (l->tab == &PerlIO_stdio) { | |
3534 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3535 | if (s->stdio == f) { | |
3536 | dTHX; | |
3537 | PerlIO_pop(aTHX_ p); | |
3538 | return; | |
3539 | } | |
3540 | } | |
3541 | p = PerlIONext(p); | |
3542 | } | |
3543 | return; | |
9e353e3b NIS |
3544 | } |
3545 | ||
3546 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3547 | /* |
71200d45 | 3548 | * perlio buffer layer |
14a5cf38 | 3549 | */ |
9e353e3b | 3550 | |
5e2ab84b | 3551 | IV |
2dc2558e | 3552 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3553 | { |
14a5cf38 | 3554 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3555 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3556 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3557 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3558 | } | |
4b069b44 | 3559 | if (*PerlIONext(f)) { |
de009b76 | 3560 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3561 | if (posn != (Off_t) - 1) { |
3562 | b->posn = posn; | |
3563 | } | |
14a5cf38 | 3564 | } |
2dc2558e | 3565 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3566 | } |
3567 | ||
9e353e3b | 3568 | PerlIO * |
14a5cf38 JH |
3569 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3570 | IV n, const char *mode, int fd, int imode, int perm, | |
3571 | PerlIO *f, int narg, SV **args) | |
3572 | { | |
04892f78 | 3573 | if (PerlIOValid(f)) { |
14a5cf38 | 3574 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3575 | PerlIO_funcs *tab = |
3576 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3577 | if (tab && tab->Open) | |
3578 | next = | |
3579 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3580 | next, narg, args); | |
2dc2558e | 3581 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3582 | return NULL; |
3583 | } | |
3584 | } | |
3585 | else { | |
04892f78 | 3586 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3587 | int init = 0; |
3b6c1aba | 3588 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3589 | init = 1; |
3590 | /* | |
71200d45 | 3591 | * mode++; |
14a5cf38 JH |
3592 | */ |
3593 | } | |
67363c0d JH |
3594 | if (tab && tab->Open) |
3595 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3596 | f, narg, args); | |
3597 | else | |
3598 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3599 | if (f) { |
22569500 | 3600 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3601 | /* |
3602 | * if push fails during open, open fails. close will pop us. | |
3603 | */ | |
3604 | PerlIO_close (f); | |
3605 | return NULL; | |
3606 | } else { | |
3607 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3608 | if (init && fd == 2) { |
3609 | /* | |
3610 | * Initial stderr is unbuffered | |
3611 | */ | |
3612 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3613 | } | |
23b84778 IZ |
3614 | #ifdef PERLIO_USING_CRLF |
3615 | # ifdef PERLIO_IS_BINMODE_FD | |
3616 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3617 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3618 | else |
3619 | # endif | |
3620 | /* | |
3621 | * do something about failing setmode()? --jhi | |
3622 | */ | |
3623 | PerlLIO_setmode(fd, O_BINARY); | |
3624 | #endif | |
14a5cf38 JH |
3625 | } |
3626 | } | |
ee518936 | 3627 | } |
14a5cf38 | 3628 | return f; |
9e353e3b NIS |
3629 | } |
3630 | ||
14a5cf38 JH |
3631 | /* |
3632 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3633 | * read or write state. For write state, we put the postponed data through |
3634 | * the next layers. For read state, we seek() the next layers to the | |
3635 | * offset given by current position in the buffer, and discard the buffer | |
3636 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3637 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3638 | */ |
9e353e3b | 3639 | IV |
f62ce20a | 3640 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3641 | { |
dcda55fc | 3642 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3643 | int code = 0; |
04892f78 | 3644 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3645 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3646 | /* | |
71200d45 | 3647 | * write() the buffer |
14a5cf38 | 3648 | */ |
de009b76 AL |
3649 | const STDCHAR *buf = b->buf; |
3650 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3651 | while (p < b->ptr) { |
3652 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3653 | if (count > 0) { | |
3654 | p += count; | |
3655 | } | |
3656 | else if (count < 0 || PerlIO_error(n)) { | |
3657 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3658 | code = -1; | |
3659 | break; | |
3660 | } | |
3661 | } | |
3662 | b->posn += (p - buf); | |
3663 | } | |
3664 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3665 | STDCHAR *buf = PerlIO_get_base(f); | |
3666 | /* | |
71200d45 | 3667 | * Note position change |
14a5cf38 JH |
3668 | */ |
3669 | b->posn += (b->ptr - buf); | |
3670 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3671 | /* We did not consume all of it - try and seek downstream to |
3672 | our logical position | |
14a5cf38 | 3673 | */ |
4b069b44 | 3674 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3675 | /* Reload n as some layers may pop themselves on seek */ |
3676 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3677 | } |
ba5c3fe9 | 3678 | else { |
4b069b44 NIS |
3679 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3680 | data is lost for good - so return saying "ok" having undone | |
3681 | the position adjust | |
3682 | */ | |
3683 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3684 | return code; |
3685 | } | |
14a5cf38 JH |
3686 | } |
3687 | } | |
3688 | b->ptr = b->end = b->buf; | |
3689 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3690 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3691 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3692 | code = -1; |
3693 | return code; | |
6f9d8c32 NIS |
3694 | } |
3695 | ||
93c2c2ec IZ |
3696 | /* This discards the content of the buffer after b->ptr, and rereads |
3697 | * the buffer from the position off in the layer downstream; here off | |
3698 | * is at offset corresponding to b->ptr - b->buf. | |
3699 | */ | |
06da4f11 | 3700 | IV |
f62ce20a | 3701 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3702 | { |
dcda55fc | 3703 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3704 | PerlIO *n = PerlIONext(f); |
3705 | SSize_t avail; | |
3706 | /* | |
4b069b44 NIS |
3707 | * Down-stream flush is defined not to loose read data so is harmless. |
3708 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3709 | */ |
93c2c2ec | 3710 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3711 | return -1; |
3712 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3713 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3714 | |
3715 | if (!b->buf) | |
22569500 | 3716 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 3717 | |
0f0eef27 | 3718 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 3719 | |
14a5cf38 | 3720 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
3721 | |
3722 | if (!PerlIOValid(n)) { | |
3723 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3724 | return -1; | |
3725 | } | |
3726 | ||
14a5cf38 JH |
3727 | if (PerlIO_fast_gets(n)) { |
3728 | /* | |
04892f78 | 3729 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3730 | * ->Read() because that will loop till it gets what we asked for |
3731 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3732 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3733 | */ |
3734 | avail = PerlIO_get_cnt(n); | |
3735 | if (avail <= 0) { | |
3736 | avail = PerlIO_fill(n); | |
3737 | if (avail == 0) | |
3738 | avail = PerlIO_get_cnt(n); | |
3739 | else { | |
3740 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3741 | avail = 0; | |
3742 | } | |
3743 | } | |
3744 | if (avail > 0) { | |
3745 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3746 | const SSize_t cnt = avail; |
eb160463 | 3747 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3748 | avail = b->bufsiz; |
3749 | Copy(ptr, b->buf, avail, STDCHAR); | |
3750 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3751 | } | |
3752 | } | |
3753 | else { | |
3754 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3755 | } | |
3756 | if (avail <= 0) { | |
3757 | if (avail == 0) | |
3758 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3759 | else | |
3760 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3761 | return -1; | |
3762 | } | |
3763 | b->end = b->buf + avail; | |
3764 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3765 | return 0; | |
06da4f11 NIS |
3766 | } |
3767 | ||
6f9d8c32 | 3768 | SSize_t |
f62ce20a | 3769 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3770 | { |
04892f78 | 3771 | if (PerlIOValid(f)) { |
dcda55fc | 3772 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3773 | if (!b->ptr) |
3774 | PerlIO_get_base(f); | |
f62ce20a | 3775 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3776 | } |
3777 | return 0; | |
6f9d8c32 NIS |
3778 | } |
3779 | ||
9e353e3b | 3780 | SSize_t |
f62ce20a | 3781 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3782 | { |
14a5cf38 | 3783 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3784 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3785 | SSize_t unread = 0; |
3786 | SSize_t avail; | |
3787 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3788 | PerlIO_flush(f); | |
3789 | if (!b->buf) | |
3790 | PerlIO_get_base(f); | |
3791 | if (b->buf) { | |
3792 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3793 | /* | |
3794 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3795 | * which have been read back to buffer start |
14a5cf38 JH |
3796 | */ |
3797 | avail = (b->ptr - b->buf); | |
3798 | } | |
3799 | else { | |
3800 | /* | |
3801 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3802 | * unread |
14a5cf38 JH |
3803 | */ |
3804 | avail = b->bufsiz; | |
3805 | b->end = b->buf + avail; | |
3806 | b->ptr = b->end; | |
3807 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3808 | /* | |
71200d45 | 3809 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3810 | */ |
3811 | b->posn -= b->bufsiz; | |
3812 | } | |
3813 | if (avail > (SSize_t) count) { | |
3814 | /* | |
71200d45 | 3815 | * If we have space for more than count, just move count |
14a5cf38 JH |
3816 | */ |
3817 | avail = count; | |
3818 | } | |
3819 | if (avail > 0) { | |
3820 | b->ptr -= avail; | |
3821 | buf -= avail; | |
3822 | /* | |
3823 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3824 | * there |
14a5cf38 JH |
3825 | */ |
3826 | if (buf != b->ptr) { | |
3827 | Copy(buf, b->ptr, avail, STDCHAR); | |
3828 | } | |
3829 | count -= avail; | |
3830 | unread += avail; | |
3831 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3832 | } | |
3833 | } | |
93679785 NIS |
3834 | if (count > 0) { |
3835 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3836 | } | |
14a5cf38 | 3837 | return unread; |
760ac839 LW |
3838 | } |
3839 | ||
9e353e3b | 3840 | SSize_t |
f62ce20a | 3841 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3842 | { |
de009b76 | 3843 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3844 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3845 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3846 | Size_t written = 0; |
3847 | if (!b->buf) | |
3848 | PerlIO_get_base(f); | |
3849 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3850 | return 0; | |
0678cb22 NIS |
3851 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3852 | if (PerlIO_flush(f) != 0) { | |
3853 | return 0; | |
3854 | } | |
3855 | } | |
ee56a6b9 CS |
3856 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
3857 | flushptr = buf + count; | |
3858 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
3859 | --flushptr; | |
3860 | } | |
14a5cf38 JH |
3861 | while (count > 0) { |
3862 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
3863 | if ((SSize_t) count < avail) | |
3864 | avail = count; | |
ee56a6b9 CS |
3865 | if (flushptr > buf && flushptr <= buf + avail) |
3866 | avail = flushptr - buf; | |
14a5cf38 | 3867 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
3868 | if (avail) { |
3869 | Copy(buf, b->ptr, avail, STDCHAR); | |
3870 | count -= avail; | |
3871 | buf += avail; | |
3872 | written += avail; | |
3873 | b->ptr += avail; | |
3874 | if (buf == flushptr) | |
3875 | PerlIO_flush(f); | |
14a5cf38 JH |
3876 | } |
3877 | if (b->ptr >= (b->buf + b->bufsiz)) | |
3878 | PerlIO_flush(f); | |
3879 | } | |
3880 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
3881 | PerlIO_flush(f); | |
3882 | return written; | |
9e353e3b NIS |
3883 | } |
3884 | ||
94a175e1 | 3885 | IV |
f62ce20a | 3886 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3887 | { |
14a5cf38 JH |
3888 | IV code; |
3889 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
3890 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
3891 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
3892 | if (code == 0) { | |
de009b76 | 3893 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3894 | b->posn = PerlIO_tell(PerlIONext(f)); |
3895 | } | |
9e353e3b | 3896 | } |
14a5cf38 | 3897 | return code; |
9e353e3b NIS |
3898 | } |
3899 | ||
3900 | Off_t | |
f62ce20a | 3901 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 3902 | { |
dcda55fc | 3903 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3904 | /* |
71200d45 | 3905 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
3906 | */ |
3907 | Off_t posn = b->posn; | |
37725cdc | 3908 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
3909 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
3910 | #if 1 | |
3911 | /* As O_APPEND files are normally shared in some sense it is better | |
3912 | to flush : | |
3913 | */ | |
3914 | PerlIO_flush(f); | |
3915 | #else | |
37725cdc | 3916 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
3917 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
3918 | #endif | |
3919 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
3920 | } | |
14a5cf38 JH |
3921 | if (b->buf) { |
3922 | /* | |
71200d45 | 3923 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
3924 | */ |
3925 | posn += (b->ptr - b->buf); | |
3926 | } | |
3927 | return posn; | |
9e353e3b NIS |
3928 | } |
3929 | ||
3930 | IV | |
44798d05 NIS |
3931 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
3932 | { | |
de009b76 AL |
3933 | const IV code = PerlIOBase_popped(aTHX_ f); |
3934 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
3935 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3936 | Safefree(b->buf); | |
3937 | } | |
dcda55fc | 3938 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
3939 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
3940 | return code; | |
3941 | } | |
3942 | ||
3943 | IV | |
f62ce20a | 3944 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 3945 | { |
de009b76 AL |
3946 | const IV code = PerlIOBase_close(aTHX_ f); |
3947 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 3948 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 3949 | Safefree(b->buf); |
14a5cf38 | 3950 | } |
dcda55fc | 3951 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
3952 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
3953 | return code; | |
760ac839 LW |
3954 | } |
3955 | ||
9e353e3b | 3956 | STDCHAR * |
f62ce20a | 3957 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3958 | { |
dcda55fc | 3959 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3960 | if (!b->buf) |
3961 | PerlIO_get_base(f); | |
3962 | return b->ptr; | |
9e353e3b NIS |
3963 | } |
3964 | ||
05d1247b | 3965 | SSize_t |
f62ce20a | 3966 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3967 | { |
dcda55fc | 3968 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3969 | if (!b->buf) |
3970 | PerlIO_get_base(f); | |
3971 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
3972 | return (b->end - b->ptr); | |
3973 | return 0; | |
9e353e3b NIS |
3974 | } |
3975 | ||
3976 | STDCHAR * | |
f62ce20a | 3977 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3978 | { |
dcda55fc | 3979 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
3980 | PERL_UNUSED_CONTEXT; |
3981 | ||
14a5cf38 JH |
3982 | if (!b->buf) { |
3983 | if (!b->bufsiz) | |
3984 | b->bufsiz = 4096; | |
a02a5408 | 3985 | b->buf = Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
3986 | if (!b->buf) { |
3987 | b->buf = (STDCHAR *) & b->oneword; | |
3988 | b->bufsiz = sizeof(b->oneword); | |
3989 | } | |
dcda55fc | 3990 | b->end = b->ptr = b->buf; |
06da4f11 | 3991 | } |
14a5cf38 | 3992 | return b->buf; |
9e353e3b NIS |
3993 | } |
3994 | ||
3995 | Size_t | |
f62ce20a | 3996 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3997 | { |
dcda55fc | 3998 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3999 | if (!b->buf) |
4000 | PerlIO_get_base(f); | |
4001 | return (b->end - b->buf); | |
9e353e3b NIS |
4002 | } |
4003 | ||
4004 | void | |
f62ce20a | 4005 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4006 | { |
dcda55fc | 4007 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4008 | if (!b->buf) |
4009 | PerlIO_get_base(f); | |
4010 | b->ptr = ptr; | |
4011 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) { | |
14a5cf38 JH |
4012 | assert(PerlIO_get_cnt(f) == cnt); |
4013 | assert(b->ptr >= b->buf); | |
4014 | } | |
4015 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
760ac839 LW |
4016 | } |
4017 | ||
71200d45 | 4018 | PerlIO * |
ecdeb87c | 4019 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4020 | { |
ecdeb87c | 4021 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4022 | } |
4023 | ||
4024 | ||
4025 | ||
27da23d5 | 4026 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4027 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4028 | "perlio", |
4029 | sizeof(PerlIOBuf), | |
86e05cf2 | 4030 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4031 | PerlIOBuf_pushed, |
44798d05 | 4032 | PerlIOBuf_popped, |
14a5cf38 | 4033 | PerlIOBuf_open, |
86e05cf2 | 4034 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4035 | NULL, |
4036 | PerlIOBase_fileno, | |
71200d45 | 4037 | PerlIOBuf_dup, |
14a5cf38 JH |
4038 | PerlIOBuf_read, |
4039 | PerlIOBuf_unread, | |
4040 | PerlIOBuf_write, | |
4041 | PerlIOBuf_seek, | |
4042 | PerlIOBuf_tell, | |
4043 | PerlIOBuf_close, | |
4044 | PerlIOBuf_flush, | |
4045 | PerlIOBuf_fill, | |
4046 | PerlIOBase_eof, | |
4047 | PerlIOBase_error, | |
4048 | PerlIOBase_clearerr, | |
4049 | PerlIOBase_setlinebuf, | |
4050 | PerlIOBuf_get_base, | |
4051 | PerlIOBuf_bufsiz, | |
4052 | PerlIOBuf_get_ptr, | |
4053 | PerlIOBuf_get_cnt, | |
4054 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4055 | }; |
4056 | ||
66ecd56b | 4057 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4058 | /* |
71200d45 | 4059 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4060 | */ |
5e2ab84b NIS |
4061 | |
4062 | IV | |
f62ce20a | 4063 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4064 | { |
14a5cf38 | 4065 | /* |
71200d45 | 4066 | * Should never happen |
14a5cf38 JH |
4067 | */ |
4068 | PerlIO_flush(f); | |
4069 | return 0; | |
5e2ab84b NIS |
4070 | } |
4071 | ||
4072 | IV | |
f62ce20a | 4073 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4074 | { |
14a5cf38 | 4075 | /* |
71200d45 | 4076 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4077 | */ |
4078 | PerlIO_flush(f); | |
4079 | return PerlIO_close(f); | |
5e2ab84b NIS |
4080 | } |
4081 | ||
94a175e1 | 4082 | IV |
f62ce20a | 4083 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4084 | { |
14a5cf38 | 4085 | /* |
71200d45 | 4086 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4087 | */ |
4088 | PerlIO_flush(f); | |
4089 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4090 | } |
4091 | ||
4092 | ||
4093 | IV | |
f62ce20a | 4094 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4095 | { |
dcda55fc | 4096 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4097 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4098 | Safefree(b->buf); |
14a5cf38 JH |
4099 | b->buf = NULL; |
4100 | } | |
4101 | PerlIO_pop(aTHX_ f); | |
4102 | return 0; | |
5e2ab84b NIS |
4103 | } |
4104 | ||
4105 | void | |
f62ce20a | 4106 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4107 | { |
14a5cf38 JH |
4108 | if (cnt <= 0) { |
4109 | PerlIO_flush(f); | |
4110 | } | |
4111 | else { | |
f62ce20a | 4112 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4113 | } |
5e2ab84b NIS |
4114 | } |
4115 | ||
4116 | IV | |
2dc2558e | 4117 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4118 | { |
de009b76 | 4119 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4120 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4121 | /* |
71200d45 NIS |
4122 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4123 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4124 | */ |
4125 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4126 | (PerlIOBase(PerlIONext(f))-> | |
4127 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4128 | return code; | |
5e2ab84b NIS |
4129 | } |
4130 | ||
4131 | SSize_t | |
f62ce20a | 4132 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4133 | { |
14a5cf38 JH |
4134 | SSize_t avail = PerlIO_get_cnt(f); |
4135 | SSize_t got = 0; | |
eb160463 | 4136 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4137 | avail = count; |
4138 | if (avail > 0) | |
f62ce20a | 4139 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4140 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4141 | const SSize_t more = |
14a5cf38 JH |
4142 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4143 | if (more >= 0 || got == 0) | |
4144 | got += more; | |
4145 | } | |
4146 | return got; | |
5e2ab84b NIS |
4147 | } |
4148 | ||
27da23d5 | 4149 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4150 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4151 | "pending", |
4152 | sizeof(PerlIOBuf), | |
86e05cf2 | 4153 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4154 | PerlIOPending_pushed, |
44798d05 | 4155 | PerlIOBuf_popped, |
14a5cf38 | 4156 | NULL, |
86e05cf2 | 4157 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4158 | NULL, |
4159 | PerlIOBase_fileno, | |
71200d45 | 4160 | PerlIOBuf_dup, |
14a5cf38 JH |
4161 | PerlIOPending_read, |
4162 | PerlIOBuf_unread, | |
4163 | PerlIOBuf_write, | |
4164 | PerlIOPending_seek, | |
4165 | PerlIOBuf_tell, | |
4166 | PerlIOPending_close, | |
4167 | PerlIOPending_flush, | |
4168 | PerlIOPending_fill, | |
4169 | PerlIOBase_eof, | |
4170 | PerlIOBase_error, | |
4171 | PerlIOBase_clearerr, | |
4172 | PerlIOBase_setlinebuf, | |
4173 | PerlIOBuf_get_base, | |
4174 | PerlIOBuf_bufsiz, | |
4175 | PerlIOBuf_get_ptr, | |
4176 | PerlIOBuf_get_cnt, | |
4177 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4178 | }; |
4179 | ||
4180 | ||
4181 | ||
4182 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4183 | /* |
4184 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4185 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4186 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4187 | * |
4188 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4189 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4190 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4191 | * that it ends at c->nl; these two cases can be distinguished by | |
4192 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4193 | * _unread() and _flush() calls. | |
4194 | * It only matters for read operations. | |
66ecd56b NIS |
4195 | */ |
4196 | ||
14a5cf38 | 4197 | typedef struct { |
22569500 NIS |
4198 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4199 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4200 | * buffer */ |
99efab12 NIS |
4201 | } PerlIOCrlf; |
4202 | ||
f5b9d040 | 4203 | IV |
2dc2558e | 4204 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4205 | { |
14a5cf38 JH |
4206 | IV code; |
4207 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4208 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4209 | #if 0 |
14a5cf38 JH |
4210 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
4211 | f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", | |
4212 | PerlIOBase(f)->flags); | |
5e2ab84b | 4213 | #endif |
8229d19f JH |
4214 | { |
4215 | /* Enable the first CRLF capable layer you can find, but if none | |
4216 | * found, the one we just pushed is fine. This results in at | |
4217 | * any given moment at most one CRLF-capable layer being enabled | |
4218 | * in the whole layer stack. */ | |
4219 | PerlIO *g = PerlIONext(f); | |
4220 | while (g && *g) { | |
4221 | PerlIOl *b = PerlIOBase(g); | |
4222 | if (b && b->tab == &PerlIO_crlf) { | |
4223 | if (!(b->flags & PERLIO_F_CRLF)) | |
4224 | b->flags |= PERLIO_F_CRLF; | |
4225 | PerlIO_pop(aTHX_ f); | |
4226 | return code; | |
4227 | } | |
4228 | g = PerlIONext(g); | |
4229 | } | |
4230 | } | |
14a5cf38 | 4231 | return code; |
f5b9d040 NIS |
4232 | } |
4233 | ||
4234 | ||
99efab12 | 4235 | SSize_t |
f62ce20a | 4236 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4237 | { |
dcda55fc | 4238 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4239 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4240 | *(c->nl) = 0xd; |
4241 | c->nl = NULL; | |
4242 | } | |
4243 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4244 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4245 | else { |
4246 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4247 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4248 | SSize_t unread = 0; | |
4249 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4250 | PerlIO_flush(f); | |
4251 | if (!b->buf) | |
4252 | PerlIO_get_base(f); | |
4253 | if (b->buf) { | |
4254 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4255 | b->end = b->ptr = b->buf + b->bufsiz; | |
4256 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4257 | b->posn -= b->bufsiz; | |
4258 | } | |
4259 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4260 | const int ch = *--buf; |
14a5cf38 JH |
4261 | if (ch == '\n') { |
4262 | if (b->ptr - 2 >= b->buf) { | |
4263 | *--(b->ptr) = 0xa; | |
4264 | *--(b->ptr) = 0xd; | |
4265 | unread++; | |
4266 | count--; | |
4267 | } | |
4268 | else { | |
93c2c2ec IZ |
4269 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4270 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4271 | unread++; | |
4272 | count--; | |
14a5cf38 JH |
4273 | } |
4274 | } | |
4275 | else { | |
4276 | *--(b->ptr) = ch; | |
4277 | unread++; | |
4278 | count--; | |
4279 | } | |
4280 | } | |
4281 | } | |
4282 | return unread; | |
4283 | } | |
99efab12 NIS |
4284 | } |
4285 | ||
93c2c2ec | 4286 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4287 | SSize_t |
f62ce20a | 4288 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4289 | { |
dcda55fc | 4290 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4291 | if (!b->buf) |
4292 | PerlIO_get_base(f); | |
4293 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4294 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4295 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4296 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4297 | scan: |
4298 | while (nl < b->end && *nl != 0xd) | |
4299 | nl++; | |
4300 | if (nl < b->end && *nl == 0xd) { | |
4301 | test: | |
4302 | if (nl + 1 < b->end) { | |
4303 | if (nl[1] == 0xa) { | |
4304 | *nl = '\n'; | |
4305 | c->nl = nl; | |
4306 | } | |
4307 | else { | |
4308 | /* | |
71200d45 | 4309 | * Not CR,LF but just CR |
14a5cf38 JH |
4310 | */ |
4311 | nl++; | |
4312 | goto scan; | |
4313 | } | |
4314 | } | |
4315 | else { | |
4316 | /* | |
71200d45 | 4317 | * Blast - found CR as last char in buffer |
14a5cf38 | 4318 | */ |
e87a358a | 4319 | |
14a5cf38 JH |
4320 | if (b->ptr < nl) { |
4321 | /* | |
4322 | * They may not care, defer work as long as | |
71200d45 | 4323 | * possible |
14a5cf38 | 4324 | */ |
a0d1d361 | 4325 | c->nl = nl; |
14a5cf38 JH |
4326 | return (nl - b->ptr); |
4327 | } | |
4328 | else { | |
4329 | int code; | |
22569500 | 4330 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4331 | * flush() is concerned */ |
22569500 | 4332 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4333 | /* Note as we have moved buf up flush's |
4334 | posn += ptr-buf | |
4335 | will naturally make posn point at CR | |
4336 | */ | |
22569500 NIS |
4337 | b->bufsiz--; /* Buffer is thus smaller */ |
4338 | code = PerlIO_fill(f); /* Fetch some more */ | |
4339 | b->bufsiz++; /* Restore size for next time */ | |
4340 | b->buf--; /* Point at space */ | |
4341 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4342 | * off */ |
22569500 | 4343 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4344 | if (code == 0) |
22569500 | 4345 | goto test; /* fill() call worked */ |
14a5cf38 | 4346 | /* |
71200d45 | 4347 | * CR at EOF - just fall through |
14a5cf38 | 4348 | */ |
a0d1d361 | 4349 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4350 | } |
4351 | } | |
4352 | } | |
4353 | } | |
4354 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4355 | } | |
4356 | return 0; | |
99efab12 NIS |
4357 | } |
4358 | ||
4359 | void | |
f62ce20a | 4360 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4361 | { |
dcda55fc AL |
4362 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4363 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4364 | if (!b->buf) |
4365 | PerlIO_get_base(f); | |
4366 | if (!ptr) { | |
a0d1d361 | 4367 | if (c->nl) { |
14a5cf38 | 4368 | ptr = c->nl + 1; |
22569500 | 4369 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4370 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4371 | ptr--; |
4372 | } | |
4373 | } | |
14a5cf38 JH |
4374 | else { |
4375 | ptr = b->end; | |
14a5cf38 JH |
4376 | } |
4377 | ptr -= cnt; | |
4378 | } | |
4379 | else { | |
bb263b4e | 4380 | /*EMPTY*/; |
3b4bd3fd | 4381 | #if 0 |
14a5cf38 | 4382 | /* |
71200d45 | 4383 | * Test code - delete when it works ... |
14a5cf38 | 4384 | */ |
3b4bd3fd | 4385 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4386 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4387 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4388 | /* Defered CR at end of buffer case - we lied about count */ |
4389 | chk--; | |
22569500 | 4390 | } |
14a5cf38 JH |
4391 | chk -= cnt; |
4392 | ||
a0d1d361 | 4393 | if (ptr != chk ) { |
99ef548b | 4394 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
14a5cf38 JH |
4395 | " nl=%p e=%p for %d", ptr, chk, flags, c->nl, |
4396 | b->end, cnt); | |
4397 | } | |
99ef548b | 4398 | #endif |
14a5cf38 JH |
4399 | } |
4400 | if (c->nl) { | |
4401 | if (ptr > c->nl) { | |
4402 | /* | |
71200d45 | 4403 | * They have taken what we lied about |
14a5cf38 JH |
4404 | */ |
4405 | *(c->nl) = 0xd; | |
4406 | c->nl = NULL; | |
4407 | ptr++; | |
4408 | } | |
4409 | } | |
4410 | b->ptr = ptr; | |
4411 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4412 | } |
4413 | ||
4414 | SSize_t | |
f62ce20a | 4415 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4416 | { |
14a5cf38 | 4417 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4418 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4419 | else { |
dcda55fc | 4420 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4421 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4422 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4423 | if (!b->buf) |
4424 | PerlIO_get_base(f); | |
4425 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4426 | return 0; | |
4427 | while (buf < ebuf) { | |
dcda55fc | 4428 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4429 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4430 | while (buf < ebuf && b->ptr < eptr) { | |
4431 | if (*buf == '\n') { | |
4432 | if ((b->ptr + 2) > eptr) { | |
4433 | /* | |
71200d45 | 4434 | * Not room for both |
14a5cf38 JH |
4435 | */ |
4436 | PerlIO_flush(f); | |
4437 | break; | |
4438 | } | |
4439 | else { | |
22569500 NIS |
4440 | *(b->ptr)++ = 0xd; /* CR */ |
4441 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4442 | buf++; |
4443 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4444 | PerlIO_flush(f); | |
4445 | break; | |
4446 | } | |
4447 | } | |
4448 | } | |
4449 | else { | |
dcda55fc | 4450 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4451 | } |
4452 | if (b->ptr >= eptr) { | |
4453 | PerlIO_flush(f); | |
4454 | break; | |
4455 | } | |
4456 | } | |
4457 | } | |
4458 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4459 | PerlIO_flush(f); | |
4460 | return (buf - (STDCHAR *) vbuf); | |
4461 | } | |
99efab12 NIS |
4462 | } |
4463 | ||
4464 | IV | |
f62ce20a | 4465 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4466 | { |
dcda55fc | 4467 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4468 | if (c->nl) { |
4469 | *(c->nl) = 0xd; | |
4470 | c->nl = NULL; | |
4471 | } | |
f62ce20a | 4472 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4473 | } |
4474 | ||
86e05cf2 NIS |
4475 | IV |
4476 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4477 | { | |
4478 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4479 | /* In text mode - flush any pending stuff and flip it */ | |
4480 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4481 | #ifndef PERLIO_USING_CRLF | |
4482 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
4483 | if (PerlIOBase(f)->tab == &PerlIO_crlf) { | |
4484 | PerlIO_pop(aTHX_ f); | |
4485 | } | |
4486 | #endif | |
4487 | } | |
4488 | return 0; | |
4489 | } | |
4490 | ||
27da23d5 | 4491 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4492 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4493 | "crlf", |
4494 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4495 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4496 | PerlIOCrlf_pushed, |
44798d05 | 4497 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4498 | PerlIOBuf_open, |
86e05cf2 | 4499 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4500 | NULL, |
4501 | PerlIOBase_fileno, | |
71200d45 | 4502 | PerlIOBuf_dup, |
de009b76 | 4503 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4504 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4505 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4506 | PerlIOBuf_seek, |
4507 | PerlIOBuf_tell, | |
4508 | PerlIOBuf_close, | |
4509 | PerlIOCrlf_flush, | |
4510 | PerlIOBuf_fill, | |
4511 | PerlIOBase_eof, | |
4512 | PerlIOBase_error, | |
4513 | PerlIOBase_clearerr, | |
4514 | PerlIOBase_setlinebuf, | |
4515 | PerlIOBuf_get_base, | |
4516 | PerlIOBuf_bufsiz, | |
4517 | PerlIOBuf_get_ptr, | |
4518 | PerlIOCrlf_get_cnt, | |
4519 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4520 | }; |
4521 | ||
06da4f11 NIS |
4522 | #ifdef HAS_MMAP |
4523 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4524 | /* |
71200d45 | 4525 | * mmap as "buffer" layer |
14a5cf38 | 4526 | */ |
06da4f11 | 4527 | |
14a5cf38 | 4528 | typedef struct { |
22569500 NIS |
4529 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4530 | Mmap_t mptr; /* Mapped address */ | |
4531 | Size_t len; /* mapped length */ | |
4532 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4533 | } PerlIOMmap; |
4534 | ||
4535 | IV | |
f62ce20a | 4536 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4537 | { |
27da23d5 | 4538 | dVAR; |
de009b76 AL |
4539 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4540 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4541 | IV code = 0; |
4542 | if (m->len) | |
4543 | abort(); | |
4544 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4545 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4546 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4547 | Stat_t st; |
4548 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4549 | if (code == 0 && S_ISREG(st.st_mode)) { |
4550 | SSize_t len = st.st_size - b->posn; | |
4551 | if (len > 0) { | |
4552 | Off_t posn; | |
27da23d5 JH |
4553 | if (PL_mmap_page_size <= 0) |
4554 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4555 | PL_mmap_page_size); | |
14a5cf38 JH |
4556 | if (b->posn < 0) { |
4557 | /* | |
4558 | * This is a hack - should never happen - open should | |
71200d45 | 4559 | * have set it ! |
14a5cf38 JH |
4560 | */ |
4561 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4562 | } | |
27da23d5 | 4563 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 JH |
4564 | len = st.st_size - posn; |
4565 | m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); | |
4566 | if (m->mptr && m->mptr != (Mmap_t) - 1) { | |
a5262162 | 4567 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4568 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4569 | #endif |
a5262162 | 4570 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4571 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4572 | #endif |
14a5cf38 JH |
4573 | PerlIOBase(f)->flags = |
4574 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4575 | b->end = ((STDCHAR *) m->mptr) + len; | |
4576 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4577 | b->ptr = b->buf; | |
4578 | m->len = len; | |
4579 | } | |
4580 | else { | |
4581 | b->buf = NULL; | |
4582 | } | |
4583 | } | |
4584 | else { | |
4585 | PerlIOBase(f)->flags = | |
4586 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4587 | b->buf = NULL; | |
4588 | b->ptr = b->end = b->ptr; | |
4589 | code = -1; | |
4590 | } | |
4591 | } | |
4592 | } | |
4593 | return code; | |
06da4f11 NIS |
4594 | } |
4595 | ||
4596 | IV | |
e87a358a | 4597 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4598 | { |
dcda55fc | 4599 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4600 | IV code = 0; |
4601 | if (m->len) { | |
dcda55fc | 4602 | PerlIOBuf * const b = &m->base; |
14a5cf38 JH |
4603 | if (b->buf) { |
4604 | code = munmap(m->mptr, m->len); | |
4605 | b->buf = NULL; | |
4606 | m->len = 0; | |
4607 | m->mptr = NULL; | |
4608 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4609 | code = -1; | |
4610 | } | |
4611 | b->ptr = b->end = b->buf; | |
4612 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4613 | } | |
4614 | return code; | |
06da4f11 NIS |
4615 | } |
4616 | ||
4617 | STDCHAR * | |
f62ce20a | 4618 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4619 | { |
dcda55fc AL |
4620 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4621 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4622 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4623 | /* | |
71200d45 | 4624 | * Already have a readbuffer in progress |
14a5cf38 JH |
4625 | */ |
4626 | return b->buf; | |
4627 | } | |
4628 | if (b->buf) { | |
4629 | /* | |
71200d45 | 4630 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4631 | */ |
22569500 NIS |
4632 | m->bbuf = b->buf; /* save it in case we need it again */ |
4633 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4634 | } |
4635 | if (!b->buf) { | |
22569500 | 4636 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4637 | if (!b->buf) { |
4638 | /* | |
71200d45 | 4639 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4640 | */ |
4641 | b->buf = m->bbuf; | |
4642 | } | |
4643 | } | |
4644 | b->ptr = b->end = b->buf; | |
4645 | if (b->buf) | |
4646 | return b->buf; | |
f62ce20a | 4647 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4648 | } |
4649 | ||
4650 | SSize_t | |
f62ce20a | 4651 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4652 | { |
dcda55fc AL |
4653 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4654 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4655 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4656 | PerlIO_flush(f); | |
4657 | if (b->ptr && (b->ptr - count) >= b->buf | |
4658 | && memEQ(b->ptr - count, vbuf, count)) { | |
4659 | b->ptr -= count; | |
4660 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4661 | return count; | |
4662 | } | |
4663 | if (m->len) { | |
4664 | /* | |
71200d45 | 4665 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4666 | */ |
4667 | PerlIO_flush(f); | |
4668 | /* | |
71200d45 | 4669 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4670 | */ |
4671 | if (!b->buf && m->bbuf) | |
4672 | b->buf = m->bbuf; | |
4673 | if (!b->buf) { | |
f62ce20a | 4674 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4675 | m->bbuf = b->buf; |
4676 | } | |
4677 | } | |
f62ce20a | 4678 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4679 | } |
4680 | ||
4681 | SSize_t | |
f62ce20a | 4682 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4683 | { |
de009b76 AL |
4684 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4685 | PerlIOBuf * const b = &m->base; | |
4686 | ||
14a5cf38 JH |
4687 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4688 | /* | |
71200d45 | 4689 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4690 | */ |
4691 | if (m->len) { | |
e87a358a | 4692 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4693 | return 0; |
4694 | } | |
4695 | /* | |
71200d45 | 4696 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4697 | */ |
4698 | if (!b->buf && m->bbuf) | |
4699 | b->buf = m->bbuf; | |
4700 | if (!b->buf) { | |
f62ce20a | 4701 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4702 | m->bbuf = b->buf; |
4703 | } | |
06da4f11 | 4704 | } |
f62ce20a | 4705 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4706 | } |
4707 | ||
4708 | IV | |
f62ce20a | 4709 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4710 | { |
dcda55fc AL |
4711 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4712 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4713 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4714 | /* |
71200d45 | 4715 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4716 | */ |
4717 | if (b->buf) { | |
4718 | if (m->len) { | |
4719 | /* | |
71200d45 | 4720 | * Unmap the buffer |
14a5cf38 | 4721 | */ |
e87a358a | 4722 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4723 | code = -1; |
4724 | } | |
4725 | else { | |
4726 | /* | |
4727 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4728 | * remember it in case we need one later |
14a5cf38 JH |
4729 | */ |
4730 | m->bbuf = b->buf; | |
4731 | } | |
4732 | } | |
4733 | return code; | |
06da4f11 NIS |
4734 | } |
4735 | ||
4736 | IV | |
f62ce20a | 4737 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4738 | { |
dcda55fc | 4739 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4740 | IV code = PerlIO_flush(f); |
4741 | if (code == 0 && !b->buf) { | |
f62ce20a | 4742 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4743 | } |
4744 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4745 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4746 | } |
4747 | return code; | |
06da4f11 NIS |
4748 | } |
4749 | ||
4750 | IV | |
f62ce20a | 4751 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4752 | { |
dcda55fc AL |
4753 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4754 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4755 | IV code = PerlIO_flush(f); |
4756 | if (m->bbuf) { | |
4757 | b->buf = m->bbuf; | |
4758 | m->bbuf = NULL; | |
4759 | b->ptr = b->end = b->buf; | |
4760 | } | |
f62ce20a | 4761 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4762 | code = -1; |
4763 | return code; | |
06da4f11 NIS |
4764 | } |
4765 | ||
71200d45 | 4766 | PerlIO * |
ecdeb87c | 4767 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4768 | { |
ecdeb87c | 4769 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4770 | } |
4771 | ||
06da4f11 | 4772 | |
27da23d5 | 4773 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4774 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4775 | "mmap", |
4776 | sizeof(PerlIOMmap), | |
86e05cf2 | 4777 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4778 | PerlIOBuf_pushed, |
44798d05 | 4779 | PerlIOBuf_popped, |
14a5cf38 | 4780 | PerlIOBuf_open, |
86e05cf2 | 4781 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4782 | NULL, |
4783 | PerlIOBase_fileno, | |
71200d45 | 4784 | PerlIOMmap_dup, |
14a5cf38 JH |
4785 | PerlIOBuf_read, |
4786 | PerlIOMmap_unread, | |
4787 | PerlIOMmap_write, | |
4788 | PerlIOBuf_seek, | |
4789 | PerlIOBuf_tell, | |
4790 | PerlIOBuf_close, | |
4791 | PerlIOMmap_flush, | |
4792 | PerlIOMmap_fill, | |
4793 | PerlIOBase_eof, | |
4794 | PerlIOBase_error, | |
4795 | PerlIOBase_clearerr, | |
4796 | PerlIOBase_setlinebuf, | |
4797 | PerlIOMmap_get_base, | |
4798 | PerlIOBuf_bufsiz, | |
4799 | PerlIOBuf_get_ptr, | |
4800 | PerlIOBuf_get_cnt, | |
4801 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4802 | }; |
4803 | ||
22569500 | 4804 | #endif /* HAS_MMAP */ |
06da4f11 | 4805 | |
9e353e3b | 4806 | PerlIO * |
e87a358a | 4807 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4808 | { |
97aff369 | 4809 | dVAR; |
a1ea730d | 4810 | if (!PL_perlio) { |
14a5cf38 JH |
4811 | PerlIO_stdstreams(aTHX); |
4812 | } | |
a1ea730d | 4813 | return &PL_perlio[1]; |
9e353e3b NIS |
4814 | } |
4815 | ||
9e353e3b | 4816 | PerlIO * |
e87a358a | 4817 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4818 | { |
97aff369 | 4819 | dVAR; |
a1ea730d | 4820 | if (!PL_perlio) { |
14a5cf38 JH |
4821 | PerlIO_stdstreams(aTHX); |
4822 | } | |
a1ea730d | 4823 | return &PL_perlio[2]; |
9e353e3b NIS |
4824 | } |
4825 | ||
9e353e3b | 4826 | PerlIO * |
e87a358a | 4827 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4828 | { |
97aff369 | 4829 | dVAR; |
a1ea730d | 4830 | if (!PL_perlio) { |
14a5cf38 JH |
4831 | PerlIO_stdstreams(aTHX); |
4832 | } | |
a1ea730d | 4833 | return &PL_perlio[3]; |
9e353e3b NIS |
4834 | } |
4835 | ||
4836 | /*--------------------------------------------------------------------------------------*/ | |
4837 | ||
9e353e3b NIS |
4838 | char * |
4839 | PerlIO_getname(PerlIO *f, char *buf) | |
4840 | { | |
14a5cf38 | 4841 | dTHX; |
a15cef0c | 4842 | #ifdef VMS |
73d840c0 | 4843 | char *name = NULL; |
7659f319 | 4844 | bool exported = FALSE; |
14a5cf38 | 4845 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4846 | if (!stdio) { |
4847 | stdio = PerlIO_exportFILE(f,0); | |
4848 | exported = TRUE; | |
4849 | } | |
4850 | if (stdio) { | |
14a5cf38 | 4851 | name = fgetname(stdio, buf); |
7659f319 CB |
4852 | if (exported) PerlIO_releaseFILE(f,stdio); |
4853 | } | |
73d840c0 | 4854 | return name; |
a15cef0c | 4855 | #else |
8772537c AL |
4856 | PERL_UNUSED_ARG(f); |
4857 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 4858 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 4859 | return NULL; |
a15cef0c | 4860 | #endif |
9e353e3b NIS |
4861 | } |
4862 | ||
4863 | ||
4864 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4865 | /* |
4866 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4867 | * terms of above |
14a5cf38 | 4868 | */ |
9e353e3b | 4869 | |
e87a358a NIS |
4870 | #undef PerlIO_fdopen |
4871 | PerlIO * | |
4872 | PerlIO_fdopen(int fd, const char *mode) | |
4873 | { | |
4874 | dTHX; | |
bd61b366 | 4875 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4876 | } |
4877 | ||
4878 | #undef PerlIO_open | |
4879 | PerlIO * | |
4880 | PerlIO_open(const char *path, const char *mode) | |
4881 | { | |
4882 | dTHX; | |
42d9b98d | 4883 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4884 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4885 | } |
4886 | ||
4887 | #undef Perlio_reopen | |
4888 | PerlIO * | |
4889 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4890 | { | |
4891 | dTHX; | |
42d9b98d | 4892 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4893 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4894 | } |
4895 | ||
9e353e3b | 4896 | #undef PerlIO_getc |
6f9d8c32 | 4897 | int |
9e353e3b | 4898 | PerlIO_getc(PerlIO *f) |
760ac839 | 4899 | { |
e87a358a | 4900 | dTHX; |
14a5cf38 | 4901 | STDCHAR buf[1]; |
de009b76 | 4902 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4903 | return (unsigned char) buf[0]; |
4904 | } | |
4905 | return EOF; | |
313ca112 NIS |
4906 | } |
4907 | ||
4908 | #undef PerlIO_ungetc | |
4909 | int | |
4910 | PerlIO_ungetc(PerlIO *f, int ch) | |
4911 | { | |
e87a358a | 4912 | dTHX; |
14a5cf38 JH |
4913 | if (ch != EOF) { |
4914 | STDCHAR buf = ch; | |
4915 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4916 | return ch; | |
4917 | } | |
4918 | return EOF; | |
760ac839 LW |
4919 | } |
4920 | ||
9e353e3b NIS |
4921 | #undef PerlIO_putc |
4922 | int | |
4923 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4924 | { |
e87a358a | 4925 | dTHX; |
14a5cf38 JH |
4926 | STDCHAR buf = ch; |
4927 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4928 | } |
4929 | ||
9e353e3b | 4930 | #undef PerlIO_puts |
760ac839 | 4931 | int |
9e353e3b | 4932 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4933 | { |
e87a358a | 4934 | dTHX; |
dcda55fc | 4935 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4936 | } |
4937 | ||
4938 | #undef PerlIO_rewind | |
4939 | void | |
c78749f2 | 4940 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4941 | { |
e87a358a | 4942 | dTHX; |
14a5cf38 JH |
4943 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4944 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4945 | } |
4946 | ||
4947 | #undef PerlIO_vprintf | |
4948 | int | |
4949 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4950 | { | |
14a5cf38 | 4951 | dTHX; |
396482e1 | 4952 | SV * const sv = newSVpvs(""); |
b83604b4 | 4953 | const char *s; |
14a5cf38 JH |
4954 | STRLEN len; |
4955 | SSize_t wrote; | |
2cc61e15 | 4956 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4957 | va_list apc; |
4958 | Perl_va_copy(ap, apc); | |
4959 | sv_vcatpvf(sv, fmt, &apc); | |
2cc61e15 | 4960 | #else |
14a5cf38 | 4961 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 | 4962 | #endif |
b83604b4 | 4963 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4964 | wrote = PerlIO_write(f, s, len); |
4965 | SvREFCNT_dec(sv); | |
4966 | return wrote; | |
760ac839 LW |
4967 | } |
4968 | ||
4969 | #undef PerlIO_printf | |
6f9d8c32 | 4970 | int |
14a5cf38 | 4971 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4972 | { |
14a5cf38 JH |
4973 | va_list ap; |
4974 | int result; | |
4975 | va_start(ap, fmt); | |
4976 | result = PerlIO_vprintf(f, fmt, ap); | |
4977 | va_end(ap); | |
4978 | return result; | |
760ac839 LW |
4979 | } |
4980 | ||
4981 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4982 | int |
14a5cf38 | 4983 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4984 | { |
e87a358a | 4985 | dTHX; |
14a5cf38 JH |
4986 | va_list ap; |
4987 | int result; | |
4988 | va_start(ap, fmt); | |
4989 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
4990 | va_end(ap); | |
4991 | return result; | |
760ac839 LW |
4992 | } |
4993 | ||
4994 | #undef PerlIO_tmpfile | |
4995 | PerlIO * | |
c78749f2 | 4996 | PerlIO_tmpfile(void) |
760ac839 | 4997 | { |
2941a2e1 JH |
4998 | dTHX; |
4999 | PerlIO *f = NULL; | |
2941a2e1 | 5000 | #ifdef WIN32 |
de009b76 | 5001 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
5002 | if (fd >= 0) |
5003 | f = PerlIO_fdopen(fd, "w+b"); | |
5004 | #else /* WIN32 */ | |
460c8493 | 5005 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
396482e1 | 5006 | SV * const sv = newSVpvs("/tmp/PerlIO_XXXXXX"); |
2941a2e1 JH |
5007 | /* |
5008 | * I have no idea how portable mkstemp() is ... NI-S | |
5009 | */ | |
de009b76 | 5010 | const int fd = mkstemp(SvPVX(sv)); |
2941a2e1 JH |
5011 | if (fd >= 0) { |
5012 | f = PerlIO_fdopen(fd, "w+"); | |
5013 | if (f) | |
5014 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
b15aece3 | 5015 | PerlLIO_unlink(SvPVX_const(sv)); |
2941a2e1 JH |
5016 | SvREFCNT_dec(sv); |
5017 | } | |
5018 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ | |
c4420975 | 5019 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 JH |
5020 | |
5021 | if (stdio) { | |
5022 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), | |
27da23d5 | 5023 | PERLIO_FUNCS_CAST(&PerlIO_stdio), |
a0714e2c | 5024 | "w+", NULL))) { |
c4420975 | 5025 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
2941a2e1 JH |
5026 | |
5027 | if (s) | |
5028 | s->stdio = stdio; | |
5029 | } | |
5030 | } | |
5031 | # endif /* else HAS_MKSTEMP */ | |
5032 | #endif /* else WIN32 */ | |
5033 | return f; | |
760ac839 LW |
5034 | } |
5035 | ||
6f9d8c32 NIS |
5036 | #undef HAS_FSETPOS |
5037 | #undef HAS_FGETPOS | |
5038 | ||
22569500 NIS |
5039 | #endif /* USE_SFIO */ |
5040 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5041 | |
9e353e3b | 5042 | /*======================================================================================*/ |
14a5cf38 | 5043 | /* |
71200d45 NIS |
5044 | * Now some functions in terms of above which may be needed even if we are |
5045 | * not in true PerlIO mode | |
9e353e3b NIS |
5046 | */ |
5047 | ||
760ac839 LW |
5048 | #ifndef HAS_FSETPOS |
5049 | #undef PerlIO_setpos | |
5050 | int | |
766a733e | 5051 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5052 | { |
14a5cf38 JH |
5053 | dTHX; |
5054 | if (SvOK(pos)) { | |
5055 | STRLEN len; | |
c4420975 | 5056 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5057 | if (f && len == sizeof(Off_t)) |
5058 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5059 | } | |
93189314 | 5060 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5061 | return -1; |
760ac839 | 5062 | } |
c411622e | 5063 | #else |
c411622e | 5064 | #undef PerlIO_setpos |
5065 | int | |
766a733e | 5066 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5067 | { |
14a5cf38 JH |
5068 | dTHX; |
5069 | if (SvOK(pos)) { | |
5070 | STRLEN len; | |
c4420975 | 5071 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5072 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5073 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5074 | return fsetpos64(f, fpos); |
d9b3e12d | 5075 | #else |
14a5cf38 | 5076 | return fsetpos(f, fpos); |
d9b3e12d | 5077 | #endif |
14a5cf38 | 5078 | } |
766a733e | 5079 | } |
93189314 | 5080 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5081 | return -1; |
c411622e | 5082 | } |
5083 | #endif | |
760ac839 LW |
5084 | |
5085 | #ifndef HAS_FGETPOS | |
5086 | #undef PerlIO_getpos | |
5087 | int | |
766a733e | 5088 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5089 | { |
14a5cf38 JH |
5090 | dTHX; |
5091 | Off_t posn = PerlIO_tell(f); | |
5092 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5093 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5094 | } |
c411622e | 5095 | #else |
c411622e | 5096 | #undef PerlIO_getpos |
5097 | int | |
766a733e | 5098 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5099 | { |
14a5cf38 JH |
5100 | dTHX; |
5101 | Fpos_t fpos; | |
5102 | int code; | |
2d4389e4 | 5103 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5104 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5105 | #else |
14a5cf38 | 5106 | code = fgetpos(f, &fpos); |
d9b3e12d | 5107 | #endif |
14a5cf38 JH |
5108 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5109 | return code; | |
c411622e | 5110 | } |
5111 | #endif | |
760ac839 LW |
5112 | |
5113 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5114 | ||
5115 | int | |
c78749f2 | 5116 | vprintf(char *pat, char *args) |
662a7e3f CS |
5117 | { |
5118 | _doprnt(pat, args, stdout); | |
22569500 | 5119 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5120 | * value */ |
662a7e3f CS |
5121 | } |
5122 | ||
5123 | int | |
c78749f2 | 5124 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5125 | { |
5126 | _doprnt(pat, args, fd); | |
22569500 | 5127 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5128 | * value */ |
760ac839 LW |
5129 | } |
5130 | ||
5131 | #endif | |
5132 | ||
5133 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5134 | int |
8ac85365 | 5135 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5136 | { |
27da23d5 | 5137 | dVAR; |
de009b76 | 5138 | const int val = vsprintf(s, fmt, ap); |
14a5cf38 JH |
5139 | if (n >= 0) { |
5140 | if (strlen(s) >= (STRLEN) n) { | |
5141 | dTHX; | |
5142 | (void) PerlIO_puts(Perl_error_log, | |
5143 | "panic: sprintf overflow - memory corrupted!\n"); | |
5144 | my_exit(1); | |
5145 | } | |
760ac839 | 5146 | } |
14a5cf38 | 5147 | return val; |
760ac839 LW |
5148 | } |
5149 | #endif | |
5150 | ||
5151 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5152 | int |
14a5cf38 | 5153 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5154 | { |
14a5cf38 JH |
5155 | va_list ap; |
5156 | int result; | |
5157 | va_start(ap, fmt); | |
5158 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5159 | va_end(ap); | |
5160 | return result; | |
760ac839 LW |
5161 | } |
5162 | #endif | |
9cfa90c0 NC |
5163 | |
5164 | /* | |
5165 | * Local variables: | |
5166 | * c-indentation-style: bsd | |
5167 | * c-basic-offset: 4 | |
5168 | * indent-tabs-mode: t | |
5169 | * End: | |
5170 | * | |
37442d52 RGS |
5171 | * ex: set ts=8 sts=4 sw=4 noet: |
5172 | */ |