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