Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
acde74e1 | 2 | * perlio.c Copyright (c) 1996-2006, Nick Ing-Simmons You may distribute |
14a5cf38 | 3 | * under the terms of either the GNU General Public License or the |
71200d45 | 4 | * Artistic License, as specified in the README file. |
760ac839 LW |
5 | */ |
6 | ||
14a5cf38 | 7 | /* |
d31a8517 AT |
8 | * Hour after hour for nearly three weary days he had jogged up and down, |
9 | * over passes, and through long dales, and across many streams. | |
10 | */ | |
11 | ||
166f8a29 DM |
12 | /* This file contains the functions needed to implement PerlIO, which |
13 | * is Perl's private replacement for the C stdio library. This is used | |
14 | * by default unless you compile with -Uuseperlio or run with | |
15 | * PERLIO=:stdio (but don't do this unless you know what you're doing) | |
16 | */ | |
17 | ||
d31a8517 | 18 | /* |
71200d45 | 19 | * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get |
14a5cf38 | 20 | * at the dispatch tables, even when we do not need it for other reasons. |
71200d45 | 21 | * Invent a dSYS macro to abstract this out |
14a5cf38 | 22 | */ |
7bcba3d4 NIS |
23 | #ifdef PERL_IMPLICIT_SYS |
24 | #define dSYS dTHX | |
25 | #else | |
26 | #define dSYS dNOOP | |
27 | #endif | |
28 | ||
760ac839 | 29 | #define VOIDUSED 1 |
12ae5dfc JH |
30 | #ifdef PERL_MICRO |
31 | # include "uconfig.h" | |
32 | #else | |
33 | # include "config.h" | |
34 | #endif | |
760ac839 | 35 | |
6f9d8c32 | 36 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 37 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
14a5cf38 | 38 | /* |
71200d45 | 39 | * #define PerlIO FILE |
14a5cf38 | 40 | */ |
760ac839 LW |
41 | #endif |
42 | /* | |
6f9d8c32 | 43 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 44 | * which are not #defined in perlio.h. |
6f9d8c32 | 45 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
46 | */ |
47 | ||
48 | #include "EXTERN.h" | |
864dbfa3 | 49 | #define PERL_IN_PERLIO_C |
760ac839 LW |
50 | #include "perl.h" |
51 | ||
32af7c23 CL |
52 | #ifdef PERL_IMPLICIT_CONTEXT |
53 | #undef dSYS | |
54 | #define dSYS dTHX | |
55 | #endif | |
56 | ||
0c4f7ff0 NIS |
57 | #include "XSUB.h" |
58 | ||
9cffb111 OS |
59 | #ifdef __Lynx__ |
60 | /* Missing proto on LynxOS */ | |
61 | int mkstemp(char*); | |
62 | #endif | |
63 | ||
1b7a0411 | 64 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 65 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1b7a0411 | 66 | if (PerlIOValid(f)) { \ |
46c461b5 | 67 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
68 | if (tab && tab->callback) \ |
69 | return (*tab->callback) args; \ | |
70 | else \ | |
71 | return PerlIOBase_ ## base args; \ | |
72 | } \ | |
73 | else \ | |
74 | SETERRNO(EBADF, SS_IVCHAN); \ | |
75 | return failure | |
76 | ||
77 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 78 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1b7a0411 | 79 | if (PerlIOValid(f)) { \ |
46c461b5 | 80 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
81 | if (tab && tab->callback) \ |
82 | return (*tab->callback) args; \ | |
83 | SETERRNO(EINVAL, LIB_INVARG); \ | |
84 | } \ | |
85 | else \ | |
86 | SETERRNO(EBADF, SS_IVCHAN); \ | |
87 | return failure | |
88 | ||
89 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 90 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1b7a0411 | 91 | if (PerlIOValid(f)) { \ |
46c461b5 | 92 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
93 | if (tab && tab->callback) \ |
94 | (*tab->callback) args; \ | |
95 | else \ | |
96 | PerlIOBase_ ## base args; \ | |
1b7a0411 JH |
97 | } \ |
98 | else \ | |
99 | SETERRNO(EBADF, SS_IVCHAN) | |
100 | ||
101 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 102 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1b7a0411 | 103 | if (PerlIOValid(f)) { \ |
46c461b5 | 104 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ |
1b7a0411 JH |
105 | if (tab && tab->callback) \ |
106 | (*tab->callback) args; \ | |
37725cdc NIS |
107 | else \ |
108 | SETERRNO(EINVAL, LIB_INVARG); \ | |
1b7a0411 JH |
109 | } \ |
110 | else \ | |
111 | SETERRNO(EBADF, SS_IVCHAN) | |
112 | ||
71ab4674 SP |
113 | #ifndef USE_SFIO |
114 | int | |
115 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
116 | { | |
117 | /* | |
118 | * This used to be contents of do_binmode in doio.c | |
119 | */ | |
120 | #ifdef DOSISH | |
121 | # if defined(atarist) || defined(__MINT__) | |
122 | if (!fflush(fp)) { | |
123 | if (mode & O_BINARY) | |
124 | ((FILE *) fp)->_flag |= _IOBIN; | |
125 | else | |
126 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
127 | return 1; | |
128 | } | |
129 | return 0; | |
130 | # else | |
131 | dTHX; | |
132 | #ifdef NETWARE | |
133 | if (PerlLIO_setmode(fp, mode) != -1) { | |
134 | #else | |
135 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
136 | #endif | |
137 | # if defined(WIN32) && defined(__BORLANDC__) | |
138 | /* | |
139 | * The translation mode of the stream is maintained independent | |
140 | of | |
141 | * the translation mode of the fd in the Borland RTL (heavy | |
142 | * digging through their runtime sources reveal). User has to | |
143 | set | |
144 | * the mode explicitly for the stream (though they don't | |
145 | document | |
146 | * this anywhere). GSAR 97-5-24 | |
147 | */ | |
148 | fseek(fp, 0L, 0); | |
149 | if (mode & O_BINARY) | |
150 | fp->flags |= _F_BIN; | |
151 | else | |
152 | fp->flags &= ~_F_BIN; | |
153 | # endif | |
154 | return 1; | |
155 | } | |
156 | else | |
157 | return 0; | |
158 | # endif | |
159 | #else | |
160 | # if defined(USEMYBINMODE) | |
161 | dTHX; | |
162 | if (my_binmode(fp, iotype, mode) != FALSE) | |
163 | return 1; | |
164 | else | |
165 | return 0; | |
166 | # else | |
167 | PERL_UNUSED_ARG(fp); | |
168 | PERL_UNUSED_ARG(iotype); | |
169 | PERL_UNUSED_ARG(mode); | |
170 | return 1; | |
171 | # endif | |
172 | #endif | |
173 | } | |
174 | #endif /* sfio */ | |
175 | ||
06c7082d | 176 | #ifndef O_ACCMODE |
22569500 | 177 | #define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
178 | #endif |
179 | ||
180 | int | |
181 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
182 | { | |
de009b76 | 183 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
184 | int ix = 0; |
185 | int ptype; | |
186 | switch (result) { | |
187 | case O_RDONLY: | |
188 | ptype = IoTYPE_RDONLY; | |
189 | break; | |
190 | case O_WRONLY: | |
191 | ptype = IoTYPE_WRONLY; | |
192 | break; | |
193 | case O_RDWR: | |
194 | default: | |
195 | ptype = IoTYPE_RDWR; | |
196 | break; | |
197 | } | |
198 | if (writing) | |
199 | *writing = (result != O_RDONLY); | |
200 | ||
201 | if (result == O_RDONLY) { | |
202 | mode[ix++] = 'r'; | |
203 | } | |
204 | #ifdef O_APPEND | |
205 | else if (rawmode & O_APPEND) { | |
206 | mode[ix++] = 'a'; | |
207 | if (result != O_WRONLY) | |
208 | mode[ix++] = '+'; | |
209 | } | |
210 | #endif | |
211 | else { | |
212 | if (result == O_WRONLY) | |
213 | mode[ix++] = 'w'; | |
214 | else { | |
215 | mode[ix++] = 'r'; | |
216 | mode[ix++] = '+'; | |
217 | } | |
218 | } | |
219 | if (rawmode & O_BINARY) | |
220 | mode[ix++] = 'b'; | |
221 | mode[ix] = '\0'; | |
222 | return ptype; | |
223 | } | |
224 | ||
eb73beca NIS |
225 | #ifndef PERLIO_LAYERS |
226 | int | |
227 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
228 | { | |
6874a2de NIS |
229 | if (!names || !*names |
230 | || strEQ(names, ":crlf") | |
231 | || strEQ(names, ":raw") | |
232 | || strEQ(names, ":bytes") | |
233 | ) { | |
14a5cf38 JH |
234 | return 0; |
235 | } | |
236 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
237 | /* | |
71200d45 | 238 | * NOTREACHED |
14a5cf38 JH |
239 | */ |
240 | return -1; | |
eb73beca NIS |
241 | } |
242 | ||
13621cfb NIS |
243 | void |
244 | PerlIO_destruct(pTHX) | |
245 | { | |
246 | } | |
247 | ||
f5b9d040 NIS |
248 | int |
249 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
250 | { | |
92bff44d | 251 | #ifdef USE_SFIO |
8772537c AL |
252 | PERL_UNUSED_ARG(iotype); |
253 | PERL_UNUSED_ARG(mode); | |
254 | PERL_UNUSED_ARG(names); | |
14a5cf38 | 255 | return 1; |
92bff44d | 256 | #else |
14a5cf38 | 257 | return perlsio_binmode(fp, iotype, mode); |
92bff44d | 258 | #endif |
f5b9d040 | 259 | } |
60382766 | 260 | |
e0fa5af2 | 261 | PerlIO * |
ecdeb87c | 262 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 263 | { |
a0fd4948 | 264 | #if defined(PERL_MICRO) || defined(__SYMBIAN32__) |
0553478e NIS |
265 | return NULL; |
266 | #else | |
267 | #ifdef PERL_IMPLICIT_SYS | |
22569500 | 268 | return PerlSIO_fdupopen(f); |
0553478e | 269 | #else |
30753f56 NIS |
270 | #ifdef WIN32 |
271 | return win32_fdupopen(f); | |
272 | #else | |
e0fa5af2 | 273 | if (f) { |
504618e9 | 274 | const int fd = PerlLIO_dup(PerlIO_fileno(f)); |
e0fa5af2 | 275 | if (fd >= 0) { |
06c7082d | 276 | char mode[8]; |
a5936e02 | 277 | #ifdef DJGPP |
dcda55fc AL |
278 | const int omode = djgpp_get_stream_mode(f); |
279 | #else | |
280 | const int omode = fcntl(fd, F_GETFL); | |
a5936e02 | 281 | #endif |
06c7082d | 282 | PerlIO_intmode2str(omode,mode,NULL); |
e0fa5af2 | 283 | /* the r+ is a hack */ |
06c7082d | 284 | return PerlIO_fdopen(fd, mode); |
e0fa5af2 NIS |
285 | } |
286 | return NULL; | |
287 | } | |
288 | else { | |
93189314 | 289 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 290 | } |
7114a2d2 | 291 | #endif |
e0fa5af2 | 292 | return NULL; |
0553478e | 293 | #endif |
30753f56 | 294 | #endif |
e0fa5af2 NIS |
295 | } |
296 | ||
297 | ||
14a5cf38 | 298 | /* |
71200d45 | 299 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 300 | */ |
ee518936 NIS |
301 | |
302 | PerlIO * | |
14a5cf38 JH |
303 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
304 | int imode, int perm, PerlIO *old, int narg, SV **args) | |
305 | { | |
7cf31beb NIS |
306 | if (narg) { |
307 | if (narg > 1) { | |
3b8752bb | 308 | Perl_croak(aTHX_ "More than one argument to open"); |
7cf31beb | 309 | } |
14a5cf38 JH |
310 | if (*args == &PL_sv_undef) |
311 | return PerlIO_tmpfile(); | |
312 | else { | |
e62f0680 | 313 | const char *name = SvPV_nolen_const(*args); |
3b6c1aba | 314 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
315 | fd = PerlLIO_open3(name, imode, perm); |
316 | if (fd >= 0) | |
de009b76 | 317 | return PerlIO_fdopen(fd, mode + 1); |
14a5cf38 JH |
318 | } |
319 | else if (old) { | |
320 | return PerlIO_reopen(name, mode, old); | |
321 | } | |
322 | else { | |
323 | return PerlIO_open(name, mode); | |
324 | } | |
325 | } | |
326 | } | |
327 | else { | |
328 | return PerlIO_fdopen(fd, (char *) mode); | |
329 | } | |
330 | return NULL; | |
ee518936 NIS |
331 | } |
332 | ||
0c4f7ff0 NIS |
333 | XS(XS_PerlIO__Layer__find) |
334 | { | |
14a5cf38 JH |
335 | dXSARGS; |
336 | if (items < 2) | |
337 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
338 | else { | |
dcda55fc | 339 | const char * const name = SvPV_nolen_const(ST(1)); |
14a5cf38 JH |
340 | ST(0) = (strEQ(name, "crlf") |
341 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
342 | XSRETURN(1); | |
343 | } | |
0c4f7ff0 NIS |
344 | } |
345 | ||
346 | ||
347 | void | |
348 | Perl_boot_core_PerlIO(pTHX) | |
349 | { | |
14a5cf38 | 350 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
351 | } |
352 | ||
ac27b0f5 NIS |
353 | #endif |
354 | ||
32e30700 | 355 | |
6f9d8c32 | 356 | #ifdef PERLIO_IS_STDIO |
760ac839 LW |
357 | |
358 | void | |
e8632036 | 359 | PerlIO_init(pTHX) |
760ac839 | 360 | { |
96a5add6 | 361 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
362 | /* |
363 | * Does nothing (yet) except force this file to be included in perl | |
71200d45 | 364 | * binary. That allows this file to force inclusion of other functions |
14a5cf38 | 365 | * that may be required by loadable extensions e.g. for |
71200d45 | 366 | * FileHandle::tmpfile |
14a5cf38 | 367 | */ |
760ac839 LW |
368 | } |
369 | ||
33dcbb9a | 370 | #undef PerlIO_tmpfile |
371 | PerlIO * | |
8ac85365 | 372 | PerlIO_tmpfile(void) |
33dcbb9a | 373 | { |
14a5cf38 | 374 | return tmpfile(); |
33dcbb9a | 375 | } |
376 | ||
22569500 | 377 | #else /* PERLIO_IS_STDIO */ |
760ac839 LW |
378 | |
379 | #ifdef USE_SFIO | |
380 | ||
381 | #undef HAS_FSETPOS | |
382 | #undef HAS_FGETPOS | |
383 | ||
14a5cf38 JH |
384 | /* |
385 | * This section is just to make sure these functions get pulled in from | |
71200d45 | 386 | * libsfio.a |
14a5cf38 | 387 | */ |
760ac839 LW |
388 | |
389 | #undef PerlIO_tmpfile | |
390 | PerlIO * | |
c78749f2 | 391 | PerlIO_tmpfile(void) |
760ac839 | 392 | { |
14a5cf38 | 393 | return sftmp(0); |
760ac839 LW |
394 | } |
395 | ||
396 | void | |
e8632036 | 397 | PerlIO_init(pTHX) |
760ac839 | 398 | { |
96a5add6 | 399 | PERL_UNUSED_CONTEXT; |
14a5cf38 JH |
400 | /* |
401 | * Force this file to be included in perl binary. Which allows this | |
402 | * file to force inclusion of other functions that may be required by | |
71200d45 | 403 | * loadable extensions e.g. for FileHandle::tmpfile |
14a5cf38 | 404 | */ |
760ac839 | 405 | |
14a5cf38 | 406 | /* |
71200d45 | 407 | * Hack sfio does its own 'autoflush' on stdout in common cases. Flush |
14a5cf38 | 408 | * results in a lot of lseek()s to regular files and lot of small |
71200d45 | 409 | * writes to pipes. |
14a5cf38 JH |
410 | */ |
411 | sfset(sfstdout, SF_SHARE, 0); | |
760ac839 LW |
412 | } |
413 | ||
b9d6bf13 | 414 | /* This is not the reverse of PerlIO_exportFILE(), PerlIO_releaseFILE() is. */ |
92bff44d | 415 | PerlIO * |
4b069b44 | 416 | PerlIO_importFILE(FILE *stdio, const char *mode) |
92bff44d | 417 | { |
de009b76 | 418 | const int fd = fileno(stdio); |
4b069b44 | 419 | if (!mode || !*mode) { |
81428673 | 420 | mode = "r+"; |
4b069b44 NIS |
421 | } |
422 | return PerlIO_fdopen(fd, mode); | |
92bff44d NIS |
423 | } |
424 | ||
425 | FILE * | |
426 | PerlIO_findFILE(PerlIO *pio) | |
427 | { | |
de009b76 AL |
428 | const int fd = PerlIO_fileno(pio); |
429 | FILE * const f = fdopen(fd, "r+"); | |
14a5cf38 JH |
430 | PerlIO_flush(pio); |
431 | if (!f && errno == EINVAL) | |
432 | f = fdopen(fd, "w"); | |
433 | if (!f && errno == EINVAL) | |
434 | f = fdopen(fd, "r"); | |
435 | return f; | |
92bff44d NIS |
436 | } |
437 | ||
438 | ||
22569500 | 439 | #else /* USE_SFIO */ |
6f9d8c32 | 440 | /*======================================================================================*/ |
14a5cf38 | 441 | /* |
71200d45 | 442 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 443 | */ |
760ac839 | 444 | |
76ced9ad NIS |
445 | #include "perliol.h" |
446 | ||
14a5cf38 JH |
447 | /* |
448 | * We _MUST_ have <unistd.h> if we are using lseek() and may have large | |
71200d45 | 449 | * files |
14a5cf38 | 450 | */ |
02f66e2f NIS |
451 | #ifdef I_UNISTD |
452 | #include <unistd.h> | |
453 | #endif | |
06da4f11 NIS |
454 | #ifdef HAS_MMAP |
455 | #include <sys/mman.h> | |
456 | #endif | |
457 | ||
6f9d8c32 | 458 | void |
14a5cf38 JH |
459 | PerlIO_debug(const char *fmt, ...) |
460 | { | |
14a5cf38 JH |
461 | va_list ap; |
462 | dSYS; | |
463 | va_start(ap, fmt); | |
27da23d5 | 464 | if (!PL_perlio_debug_fd && !PL_tainting && PL_uid == PL_euid && PL_gid == PL_egid) { |
dcda55fc | 465 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); |
14a5cf38 | 466 | if (s && *s) |
27da23d5 | 467 | PL_perlio_debug_fd = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); |
14a5cf38 | 468 | else |
27da23d5 | 469 | PL_perlio_debug_fd = -1; |
14a5cf38 | 470 | } |
27da23d5 | 471 | if (PL_perlio_debug_fd > 0) { |
14a5cf38 | 472 | dTHX; |
70ace5da | 473 | #ifdef USE_ITHREADS |
dcda55fc | 474 | const char * const s = CopFILE(PL_curcop); |
70ace5da NIS |
475 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ |
476 | char buffer[1024]; | |
dcda55fc | 477 | const STRLEN len = my_sprintf(buffer, "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop)); |
42d9b98d NC |
478 | const STRLEN len2 = vsprintf(buffer+len, fmt, ap); |
479 | PerlLIO_write(PL_perlio_debug_fd, buffer, len + len2); | |
70ace5da | 480 | #else |
dcda55fc AL |
481 | const char *s = CopFILE(PL_curcop); |
482 | STRLEN len; | |
396482e1 | 483 | SV * const sv = newSVpvs(""); |
dcda55fc | 484 | Perl_sv_catpvf(aTHX_ sv, "%s:%" IVdf " ", s ? s : "(none)", |
14a5cf38 JH |
485 | (IV) CopLINE(PL_curcop)); |
486 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); | |
487 | ||
b83604b4 | 488 | s = SvPV_const(sv, len); |
27da23d5 | 489 | PerlLIO_write(PL_perlio_debug_fd, s, len); |
14a5cf38 | 490 | SvREFCNT_dec(sv); |
70ace5da | 491 | #endif |
14a5cf38 JH |
492 | } |
493 | va_end(ap); | |
6f9d8c32 NIS |
494 | } |
495 | ||
9e353e3b NIS |
496 | /*--------------------------------------------------------------------------------------*/ |
497 | ||
14a5cf38 | 498 | /* |
71200d45 | 499 | * Inner level routines |
14a5cf38 | 500 | */ |
9e353e3b | 501 | |
14a5cf38 | 502 | /* |
71200d45 | 503 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 504 | */ |
05d1247b | 505 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 506 | |
760ac839 | 507 | PerlIO * |
5f1a76d0 | 508 | PerlIO_allocate(pTHX) |
6f9d8c32 | 509 | { |
97aff369 | 510 | dVAR; |
14a5cf38 | 511 | /* |
71200d45 | 512 | * Find a free slot in the table, allocating new table as necessary |
14a5cf38 JH |
513 | */ |
514 | PerlIO **last; | |
515 | PerlIO *f; | |
a1ea730d | 516 | last = &PL_perlio; |
14a5cf38 JH |
517 | while ((f = *last)) { |
518 | int i; | |
519 | last = (PerlIO **) (f); | |
520 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
521 | if (!*++f) { | |
522 | return f; | |
523 | } | |
524 | } | |
525 | } | |
a02a5408 | 526 | Newxz(f,PERLIO_TABLE_SIZE,PerlIO); |
14a5cf38 JH |
527 | if (!f) { |
528 | return NULL; | |
529 | } | |
530 | *last = f; | |
531 | return f + 1; | |
05d1247b NIS |
532 | } |
533 | ||
a1ea730d NIS |
534 | #undef PerlIO_fdupopen |
535 | PerlIO * | |
ecdeb87c | 536 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 537 | { |
04892f78 | 538 | if (PerlIOValid(f)) { |
de009b76 | 539 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
fe5a182c | 540 | PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); |
210e727c JH |
541 | if (tab && tab->Dup) |
542 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
37725cdc NIS |
543 | else { |
544 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
545 | } | |
a1ea730d | 546 | } |
210e727c JH |
547 | else |
548 | SETERRNO(EBADF, SS_IVCHAN); | |
549 | ||
550 | return NULL; | |
a1ea730d NIS |
551 | } |
552 | ||
553 | void | |
5f1a76d0 | 554 | PerlIO_cleantable(pTHX_ PerlIO **tablep) |
05d1247b | 555 | { |
dcda55fc | 556 | PerlIO * const table = *tablep; |
14a5cf38 JH |
557 | if (table) { |
558 | int i; | |
559 | PerlIO_cleantable(aTHX_(PerlIO **) & (table[0])); | |
560 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { | |
dcda55fc | 561 | PerlIO * const f = table + i; |
14a5cf38 JH |
562 | if (*f) { |
563 | PerlIO_close(f); | |
564 | } | |
565 | } | |
3a1ee7e8 | 566 | Safefree(table); |
14a5cf38 | 567 | *tablep = NULL; |
05d1247b | 568 | } |
05d1247b NIS |
569 | } |
570 | ||
fcf2db38 NIS |
571 | |
572 | PerlIO_list_t * | |
3a1ee7e8 | 573 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 574 | { |
14a5cf38 | 575 | PerlIO_list_t *list; |
96a5add6 | 576 | PERL_UNUSED_CONTEXT; |
a02a5408 | 577 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
578 | list->refcnt = 1; |
579 | return list; | |
fcf2db38 NIS |
580 | } |
581 | ||
582 | void | |
3a1ee7e8 | 583 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 584 | { |
14a5cf38 JH |
585 | if (list) { |
586 | if (--list->refcnt == 0) { | |
587 | if (list->array) { | |
14a5cf38 JH |
588 | IV i; |
589 | for (i = 0; i < list->cur; i++) { | |
590 | if (list->array[i].arg) | |
591 | SvREFCNT_dec(list->array[i].arg); | |
592 | } | |
593 | Safefree(list->array); | |
594 | } | |
595 | Safefree(list); | |
596 | } | |
597 | } | |
fcf2db38 NIS |
598 | } |
599 | ||
600 | void | |
3a1ee7e8 | 601 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 602 | { |
97aff369 | 603 | dVAR; |
334e202e | 604 | PerlIO_pair_t *p; |
b37c2d43 AL |
605 | PERL_UNUSED_CONTEXT; |
606 | ||
14a5cf38 JH |
607 | if (list->cur >= list->len) { |
608 | list->len += 8; | |
609 | if (list->array) | |
610 | Renew(list->array, list->len, PerlIO_pair_t); | |
611 | else | |
a02a5408 | 612 | Newx(list->array, list->len, PerlIO_pair_t); |
14a5cf38 JH |
613 | } |
614 | p = &(list->array[list->cur++]); | |
615 | p->funcs = funcs; | |
616 | if ((p->arg = arg)) { | |
f84c484e | 617 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 618 | } |
fcf2db38 NIS |
619 | } |
620 | ||
3a1ee7e8 NIS |
621 | PerlIO_list_t * |
622 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
623 | { | |
b37c2d43 | 624 | PerlIO_list_t *list = NULL; |
694c95cf JH |
625 | if (proto) { |
626 | int i; | |
627 | list = PerlIO_list_alloc(aTHX); | |
628 | for (i=0; i < proto->cur; i++) { | |
a0714e2c | 629 | SV *arg = NULL; |
694c95cf JH |
630 | if (proto->array[i].arg) |
631 | arg = PerlIO_sv_dup(aTHX_ proto->array[i].arg,param); | |
632 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); | |
633 | } | |
3a1ee7e8 NIS |
634 | } |
635 | return list; | |
636 | } | |
4a4a6116 | 637 | |
05d1247b | 638 | void |
3a1ee7e8 | 639 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 640 | { |
3aaf42a7 | 641 | #ifdef USE_ITHREADS |
3a1ee7e8 NIS |
642 | PerlIO **table = &proto->Iperlio; |
643 | PerlIO *f; | |
644 | PL_perlio = NULL; | |
645 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
646 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
647 | PerlIO_allocate(aTHX); /* root slot is never used */ | |
694c95cf | 648 | PerlIO_debug("Clone %p from %p\n",aTHX,proto); |
3a1ee7e8 NIS |
649 | while ((f = *table)) { |
650 | int i; | |
651 | table = (PerlIO **) (f++); | |
652 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
653 | if (*f) { | |
93a8090d | 654 | (void) fp_dup(f, 0, param); |
3a1ee7e8 NIS |
655 | } |
656 | f++; | |
657 | } | |
658 | } | |
1b6737cc AL |
659 | #else |
660 | PERL_UNUSED_ARG(proto); | |
661 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 662 | #endif |
9a6404c5 DM |
663 | } |
664 | ||
665 | void | |
13621cfb NIS |
666 | PerlIO_destruct(pTHX) |
667 | { | |
97aff369 | 668 | dVAR; |
a1ea730d | 669 | PerlIO **table = &PL_perlio; |
14a5cf38 | 670 | PerlIO *f; |
694c95cf JH |
671 | #ifdef USE_ITHREADS |
672 | PerlIO_debug("Destruct %p\n",aTHX); | |
673 | #endif | |
14a5cf38 JH |
674 | while ((f = *table)) { |
675 | int i; | |
676 | table = (PerlIO **) (f++); | |
677 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
678 | PerlIO *x = f; | |
dcda55fc | 679 | const PerlIOl *l; |
14a5cf38 JH |
680 | while ((l = *x)) { |
681 | if (l->tab->kind & PERLIO_K_DESTRUCT) { | |
682 | PerlIO_debug("Destruct popping %s\n", l->tab->name); | |
683 | PerlIO_flush(x); | |
684 | PerlIO_pop(aTHX_ x); | |
685 | } | |
686 | else { | |
687 | x = PerlIONext(x); | |
688 | } | |
689 | } | |
690 | f++; | |
691 | } | |
692 | } | |
13621cfb NIS |
693 | } |
694 | ||
695 | void | |
a999f61b | 696 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 697 | { |
dcda55fc | 698 | const PerlIOl *l = *f; |
14a5cf38 | 699 | if (l) { |
fe5a182c | 700 | PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, l->tab->name); |
14a5cf38 JH |
701 | if (l->tab->Popped) { |
702 | /* | |
703 | * If popped returns non-zero do not free its layer structure | |
704 | * it has either done so itself, or it is shared and still in | |
71200d45 | 705 | * use |
14a5cf38 | 706 | */ |
f62ce20a | 707 | if ((*l->tab->Popped) (aTHX_ f) != 0) |
14a5cf38 JH |
708 | return; |
709 | } | |
b47cad08 | 710 | *f = l->next; |
3a1ee7e8 | 711 | Safefree(l); |
a8c08ecd | 712 | } |
6f9d8c32 NIS |
713 | } |
714 | ||
39f7a870 JH |
715 | /* Return as an array the stack of layers on a filehandle. Note that |
716 | * the stack is returned top-first in the array, and there are three | |
717 | * times as many array elements as there are layers in the stack: the | |
718 | * first element of a layer triplet is the name, the second one is the | |
719 | * arguments, and the third one is the flags. */ | |
720 | ||
721 | AV * | |
722 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
723 | { | |
97aff369 | 724 | dVAR; |
dcda55fc | 725 | AV * const av = newAV(); |
39f7a870 | 726 | |
dcda55fc AL |
727 | if (PerlIOValid(f)) { |
728 | PerlIOl *l = PerlIOBase(f); | |
729 | ||
730 | while (l) { | |
731 | SV * const name = l->tab && l->tab->name ? | |
732 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
733 | SV * const arg = l->tab && l->tab->Getarg ? | |
734 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
735 | av_push(av, name); | |
736 | av_push(av, arg); | |
737 | av_push(av, newSViv((IV)l->flags)); | |
738 | l = l->next; | |
739 | } | |
740 | } | |
39f7a870 | 741 | |
dcda55fc | 742 | return av; |
39f7a870 JH |
743 | } |
744 | ||
9e353e3b | 745 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 746 | /* |
71200d45 | 747 | * XS Interface for perl code |
14a5cf38 | 748 | */ |
9e353e3b | 749 | |
fcf2db38 | 750 | PerlIO_funcs * |
2edd7e44 | 751 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 752 | { |
27da23d5 | 753 | dVAR; |
14a5cf38 JH |
754 | IV i; |
755 | if ((SSize_t) len <= 0) | |
756 | len = strlen(name); | |
3a1ee7e8 | 757 | for (i = 0; i < PL_known_layers->cur; i++) { |
46c461b5 | 758 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
a9f76400 | 759 | if (memEQ(f->name, name, len) && f->name[len] == 0) { |
fe5a182c | 760 | PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); |
14a5cf38 JH |
761 | return f; |
762 | } | |
763 | } | |
3a1ee7e8 NIS |
764 | if (load && PL_subname && PL_def_layerlist |
765 | && PL_def_layerlist->cur >= 2) { | |
d7a09b41 SR |
766 | if (PL_in_load_module) { |
767 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
768 | return NULL; | |
769 | } else { | |
396482e1 | 770 | SV * const pkgsv = newSVpvs("PerlIO"); |
46c461b5 AL |
771 | SV * const layer = newSVpvn(name, len); |
772 | CV * const cv = get_cv("PerlIO::Layer::NoWarnings", FALSE); | |
773 | ENTER; | |
d7a09b41 | 774 | SAVEINT(PL_in_load_module); |
c9bca74a | 775 | if (cv) { |
9cfa90c0 | 776 | SAVEGENERICSV(PL_warnhook); |
b37c2d43 | 777 | PL_warnhook = (SV *) (SvREFCNT_inc_simple_NN(cv)); |
c9bca74a | 778 | } |
d7a09b41 SR |
779 | PL_in_load_module++; |
780 | /* | |
781 | * The two SVs are magically freed by load_module | |
782 | */ | |
a0714e2c | 783 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); |
d7a09b41 SR |
784 | PL_in_load_module--; |
785 | LEAVE; | |
786 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
787 | } | |
14a5cf38 JH |
788 | } |
789 | PerlIO_debug("Cannot find %.*s\n", (int) len, name); | |
790 | return NULL; | |
f3862f8b NIS |
791 | } |
792 | ||
2a1bc955 | 793 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
794 | |
795 | static int | |
796 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
797 | { | |
14a5cf38 | 798 | if (SvROK(sv)) { |
dcda55fc AL |
799 | IO * const io = GvIOn((GV *) SvRV(sv)); |
800 | PerlIO * const ifp = IoIFP(io); | |
801 | PerlIO * const ofp = IoOFP(io); | |
14a5cf38 JH |
802 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", sv, io, ifp, ofp); |
803 | } | |
804 | return 0; | |
b13b2135 NIS |
805 | } |
806 | ||
807 | static int | |
808 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
809 | { | |
14a5cf38 | 810 | if (SvROK(sv)) { |
dcda55fc AL |
811 | IO * const io = GvIOn((GV *) SvRV(sv)); |
812 | PerlIO * const ifp = IoIFP(io); | |
813 | PerlIO * const ofp = IoOFP(io); | |
14a5cf38 JH |
814 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", sv, io, ifp, ofp); |
815 | } | |
816 | return 0; | |
b13b2135 NIS |
817 | } |
818 | ||
819 | static int | |
820 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
821 | { | |
14a5cf38 JH |
822 | Perl_warn(aTHX_ "clear %" SVf, sv); |
823 | return 0; | |
b13b2135 NIS |
824 | } |
825 | ||
826 | static int | |
827 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
828 | { | |
14a5cf38 JH |
829 | Perl_warn(aTHX_ "free %" SVf, sv); |
830 | return 0; | |
b13b2135 NIS |
831 | } |
832 | ||
833 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
834 | perlio_mg_get, |
835 | perlio_mg_set, | |
22569500 | 836 | NULL, /* len */ |
14a5cf38 JH |
837 | perlio_mg_clear, |
838 | perlio_mg_free | |
b13b2135 NIS |
839 | }; |
840 | ||
841 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) | |
842 | { | |
14a5cf38 | 843 | dXSARGS; |
dcda55fc AL |
844 | SV * const sv = SvRV(ST(1)); |
845 | AV * const av = newAV(); | |
14a5cf38 JH |
846 | MAGIC *mg; |
847 | int count = 0; | |
848 | int i; | |
849 | sv_magic(sv, (SV *) av, PERL_MAGIC_ext, NULL, 0); | |
850 | SvRMAGICAL_off(sv); | |
851 | mg = mg_find(sv, PERL_MAGIC_ext); | |
852 | mg->mg_virtual = &perlio_vtab; | |
853 | mg_magical(sv); | |
854 | Perl_warn(aTHX_ "attrib %" SVf, sv); | |
855 | for (i = 2; i < items; i++) { | |
856 | STRLEN len; | |
dcda55fc AL |
857 | const char * const name = SvPV_const(ST(i), len); |
858 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
14a5cf38 | 859 | if (layer) { |
b37c2d43 | 860 | av_push(av, SvREFCNT_inc_simple_NN(layer)); |
14a5cf38 JH |
861 | } |
862 | else { | |
863 | ST(count) = ST(i); | |
864 | count++; | |
865 | } | |
866 | } | |
867 | SvREFCNT_dec(av); | |
868 | XSRETURN(count); | |
869 | } | |
870 | ||
22569500 | 871 | #endif /* USE_ATTIBUTES_FOR_PERLIO */ |
2a1bc955 | 872 | |
e3f3bf95 NIS |
873 | SV * |
874 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 875 | { |
89529cee | 876 | HV * const stash = gv_stashpvs("PerlIO::Layer", TRUE); |
46c461b5 | 877 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 878 | return sv; |
e3f3bf95 NIS |
879 | } |
880 | ||
5ca1d77f | 881 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 882 | { |
37725cdc | 883 | /* This is used as a %SIG{__WARN__} handler to supress warnings |
c9bca74a NIS |
884 | during loading of layers. |
885 | */ | |
97aff369 | 886 | dVAR; |
c9bca74a NIS |
887 | dXSARGS; |
888 | if (items) | |
e62f0680 | 889 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))); |
c9bca74a NIS |
890 | XSRETURN(0); |
891 | } | |
892 | ||
5ca1d77f | 893 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 894 | { |
97aff369 | 895 | dVAR; |
14a5cf38 JH |
896 | dXSARGS; |
897 | if (items < 2) | |
898 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); | |
899 | else { | |
de009b76 | 900 | STRLEN len; |
46c461b5 | 901 | const char * const name = SvPV_const(ST(1), len); |
de009b76 | 902 | const bool load = (items > 2) ? SvTRUE(ST(2)) : 0; |
46c461b5 | 903 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); |
14a5cf38 JH |
904 | ST(0) = |
905 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
906 | &PL_sv_undef; | |
907 | XSRETURN(1); | |
908 | } | |
0c4f7ff0 NIS |
909 | } |
910 | ||
e3f3bf95 NIS |
911 | void |
912 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
913 | { | |
97aff369 | 914 | dVAR; |
3a1ee7e8 NIS |
915 | if (!PL_known_layers) |
916 | PL_known_layers = PerlIO_list_alloc(aTHX); | |
a0714e2c | 917 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
fe5a182c | 918 | PerlIO_debug("define %s %p\n", tab->name, (void*)tab); |
f3862f8b NIS |
919 | } |
920 | ||
1141d9f8 | 921 | int |
fcf2db38 | 922 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 923 | { |
97aff369 | 924 | dVAR; |
14a5cf38 JH |
925 | if (names) { |
926 | const char *s = names; | |
927 | while (*s) { | |
928 | while (isSPACE(*s) || *s == ':') | |
929 | s++; | |
930 | if (*s) { | |
931 | STRLEN llen = 0; | |
932 | const char *e = s; | |
bd61b366 | 933 | const char *as = NULL; |
14a5cf38 JH |
934 | STRLEN alen = 0; |
935 | if (!isIDFIRST(*s)) { | |
936 | /* | |
937 | * Message is consistent with how attribute lists are | |
938 | * passed. Even though this means "foo : : bar" is | |
71200d45 | 939 | * seen as an invalid separator character. |
14a5cf38 | 940 | */ |
de009b76 | 941 | const char q = ((*s == '\'') ? '"' : '\''); |
99ef548b | 942 | if (ckWARN(WARN_LAYER)) |
22569500 | 943 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
b4581f09 | 944 | "Invalid separator character %c%c%c in PerlIO layer specification %s", |
1e616cf5 | 945 | q, *s, q, s); |
93189314 | 946 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
947 | return -1; |
948 | } | |
949 | do { | |
950 | e++; | |
951 | } while (isALNUM(*e)); | |
952 | llen = e - s; | |
953 | if (*e == '(') { | |
954 | int nesting = 1; | |
955 | as = ++e; | |
956 | while (nesting) { | |
957 | switch (*e++) { | |
958 | case ')': | |
959 | if (--nesting == 0) | |
960 | alen = (e - 1) - as; | |
961 | break; | |
962 | case '(': | |
963 | ++nesting; | |
964 | break; | |
965 | case '\\': | |
966 | /* | |
967 | * It's a nul terminated string, not allowed | |
968 | * to \ the terminating null. Anything other | |
71200d45 | 969 | * character is passed over. |
14a5cf38 JH |
970 | */ |
971 | if (*e++) { | |
972 | break; | |
973 | } | |
974 | /* | |
71200d45 | 975 | * Drop through |
14a5cf38 JH |
976 | */ |
977 | case '\0': | |
978 | e--; | |
22569500 NIS |
979 | if (ckWARN(WARN_LAYER)) |
980 | Perl_warner(aTHX_ packWARN(WARN_LAYER), | |
b4581f09 | 981 | "Argument list not closed for PerlIO layer \"%.*s\"", |
14a5cf38 JH |
982 | (int) (e - s), s); |
983 | return -1; | |
984 | default: | |
985 | /* | |
71200d45 | 986 | * boring. |
14a5cf38 JH |
987 | */ |
988 | break; | |
989 | } | |
990 | } | |
991 | } | |
992 | if (e > s) { | |
46c461b5 | 993 | PerlIO_funcs * const layer = |
14a5cf38 JH |
994 | PerlIO_find_layer(aTHX_ s, llen, 1); |
995 | if (layer) { | |
3a1ee7e8 | 996 | PerlIO_list_push(aTHX_ av, layer, |
14a5cf38 JH |
997 | (as) ? newSVpvn(as, |
998 | alen) : | |
999 | &PL_sv_undef); | |
1000 | } | |
1001 | else { | |
041457d9 | 1002 | if (ckWARN(WARN_LAYER)) |
b4581f09 | 1003 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", |
14a5cf38 JH |
1004 | (int) llen, s); |
1005 | return -1; | |
1006 | } | |
1007 | } | |
1008 | s = e; | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | return 0; | |
1141d9f8 NIS |
1013 | } |
1014 | ||
dfebf958 | 1015 | void |
fcf2db38 | 1016 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 1017 | { |
97aff369 | 1018 | dVAR; |
27da23d5 | 1019 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 1020 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 1021 | tab = &PerlIO_crlf; |
846be114 | 1022 | #else |
6ce75a77 | 1023 | if (PerlIO_stdio.Set_ptrcnt) |
22569500 | 1024 | tab = &PerlIO_stdio; |
846be114 | 1025 | #endif |
14a5cf38 | 1026 | PerlIO_debug("Pushing %s\n", tab->name); |
3a1ee7e8 | 1027 | PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), |
14a5cf38 | 1028 | &PL_sv_undef); |
dfebf958 NIS |
1029 | } |
1030 | ||
e3f3bf95 | 1031 | SV * |
14a5cf38 | 1032 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 1033 | { |
14a5cf38 | 1034 | return av->array[n].arg; |
e3f3bf95 NIS |
1035 | } |
1036 | ||
f3862f8b | 1037 | PerlIO_funcs * |
14a5cf38 | 1038 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1039 | { |
14a5cf38 JH |
1040 | if (n >= 0 && n < av->cur) { |
1041 | PerlIO_debug("Layer %" IVdf " is %s\n", n, | |
1042 | av->array[n].funcs->name); | |
1043 | return av->array[n].funcs; | |
1044 | } | |
1045 | if (!def) | |
1046 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); | |
1047 | return def; | |
e3f3bf95 NIS |
1048 | } |
1049 | ||
4ec2216f NIS |
1050 | IV |
1051 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1052 | { | |
8772537c AL |
1053 | PERL_UNUSED_ARG(mode); |
1054 | PERL_UNUSED_ARG(arg); | |
1055 | PERL_UNUSED_ARG(tab); | |
4ec2216f NIS |
1056 | if (PerlIOValid(f)) { |
1057 | PerlIO_flush(f); | |
1058 | PerlIO_pop(aTHX_ f); | |
1059 | return 0; | |
1060 | } | |
1061 | return -1; | |
1062 | } | |
1063 | ||
27da23d5 | 1064 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1065 | sizeof(PerlIO_funcs), |
1066 | "pop", | |
1067 | 0, | |
1068 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1069 | PerlIOPop_pushed, | |
1070 | NULL, | |
1071 | NULL, | |
1072 | NULL, | |
1073 | NULL, | |
1074 | NULL, | |
1075 | NULL, | |
1076 | NULL, | |
1077 | NULL, | |
1078 | NULL, | |
1079 | NULL, | |
de009b76 AL |
1080 | NULL, |
1081 | NULL, | |
4ec2216f NIS |
1082 | NULL, /* flush */ |
1083 | NULL, /* fill */ | |
1084 | NULL, | |
1085 | NULL, | |
1086 | NULL, | |
1087 | NULL, | |
1088 | NULL, /* get_base */ | |
1089 | NULL, /* get_bufsiz */ | |
1090 | NULL, /* get_ptr */ | |
1091 | NULL, /* get_cnt */ | |
1092 | NULL, /* set_ptrcnt */ | |
1093 | }; | |
1094 | ||
fcf2db38 | 1095 | PerlIO_list_t * |
e3f3bf95 NIS |
1096 | PerlIO_default_layers(pTHX) |
1097 | { | |
97aff369 | 1098 | dVAR; |
3a1ee7e8 | 1099 | if (!PL_def_layerlist) { |
bd61b366 | 1100 | const char * const s = (PL_tainting) ? NULL : PerlEnv_getenv("PERLIO"); |
27da23d5 | 1101 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; |
3a1ee7e8 | 1102 | PL_def_layerlist = PerlIO_list_alloc(aTHX); |
27da23d5 | 1103 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); |
979e2c82 | 1104 | #if defined(WIN32) |
27da23d5 | 1105 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_win32)); |
2f8118af | 1106 | #if 0 |
14a5cf38 | 1107 | osLayer = &PerlIO_win32; |
0c4128ad | 1108 | #endif |
2f8118af | 1109 | #endif |
27da23d5 JH |
1110 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1111 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1112 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1113 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
06da4f11 | 1114 | #ifdef HAS_MMAP |
27da23d5 | 1115 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_mmap)); |
06da4f11 | 1116 | #endif |
27da23d5 JH |
1117 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); |
1118 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1119 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
3a1ee7e8 | 1120 | PerlIO_list_push(aTHX_ PL_def_layerlist, |
14a5cf38 JH |
1121 | PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), |
1122 | &PL_sv_undef); | |
1123 | if (s) { | |
3a1ee7e8 | 1124 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); |
14a5cf38 JH |
1125 | } |
1126 | else { | |
3a1ee7e8 | 1127 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
14a5cf38 | 1128 | } |
1141d9f8 | 1129 | } |
3a1ee7e8 NIS |
1130 | if (PL_def_layerlist->cur < 2) { |
1131 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
f3862f8b | 1132 | } |
3a1ee7e8 | 1133 | return PL_def_layerlist; |
e3f3bf95 NIS |
1134 | } |
1135 | ||
0c4f7ff0 NIS |
1136 | void |
1137 | Perl_boot_core_PerlIO(pTHX) | |
1138 | { | |
1139 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 JH |
1140 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1141 | __FILE__); | |
0c4f7ff0 | 1142 | #endif |
14a5cf38 | 1143 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1144 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1145 | } |
e3f3bf95 NIS |
1146 | |
1147 | PerlIO_funcs * | |
1148 | PerlIO_default_layer(pTHX_ I32 n) | |
1149 | { | |
97aff369 | 1150 | dVAR; |
46c461b5 | 1151 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 JH |
1152 | if (n < 0) |
1153 | n += av->cur; | |
27da23d5 | 1154 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1155 | } |
1156 | ||
a999f61b NIS |
1157 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1158 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1159 | |
1160 | void | |
1141d9f8 | 1161 | PerlIO_stdstreams(pTHX) |
60382766 | 1162 | { |
97aff369 | 1163 | dVAR; |
a1ea730d | 1164 | if (!PL_perlio) { |
14a5cf38 JH |
1165 | PerlIO_allocate(aTHX); |
1166 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); | |
1167 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1168 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
1169 | } | |
60382766 NIS |
1170 | } |
1171 | ||
1172 | PerlIO * | |
27da23d5 | 1173 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1174 | { |
2dc2558e NIS |
1175 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
1176 | mismatch: | |
1177 | Perl_croak(aTHX_ "Layer does not match this perl"); | |
1178 | } | |
1179 | if (tab->size) { | |
b464bac0 | 1180 | PerlIOl *l; |
2dc2558e NIS |
1181 | if (tab->size < sizeof(PerlIOl)) { |
1182 | goto mismatch; | |
1183 | } | |
1184 | /* Real layer with a data area */ | |
a02a5408 | 1185 | Newxc(l,tab->size,char,PerlIOl); |
2dc2558e NIS |
1186 | if (l && f) { |
1187 | Zero(l, tab->size, char); | |
1188 | l->next = *f; | |
27da23d5 | 1189 | l->tab = (PerlIO_funcs*) tab; |
2dc2558e NIS |
1190 | *f = l; |
1191 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, | |
1192 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1193 | if (*l->tab->Pushed && |
27da23d5 | 1194 | (*l->tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
2dc2558e NIS |
1195 | PerlIO_pop(aTHX_ f); |
1196 | return NULL; | |
1197 | } | |
1198 | } | |
1199 | } | |
1200 | else if (f) { | |
1201 | /* Pseudo-layer where push does its own stack adjust */ | |
00f51856 NIS |
1202 | PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, |
1203 | (mode) ? mode : "(Null)", (void*)arg); | |
210e727c | 1204 | if (tab->Pushed && |
27da23d5 | 1205 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { |
210e727c | 1206 | return NULL; |
14a5cf38 JH |
1207 | } |
1208 | } | |
1209 | return f; | |
60382766 NIS |
1210 | } |
1211 | ||
dfebf958 | 1212 | IV |
86e05cf2 NIS |
1213 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1214 | { | |
1215 | if (PerlIOValid(f)) { | |
1216 | /* Is layer suitable for raw stream ? */ | |
1217 | if (PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1218 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1219 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1220 | } | |
1221 | else { | |
1222 | /* Not suitable - pop it */ | |
1223 | PerlIO_pop(aTHX_ f); | |
1224 | } | |
1225 | return 0; | |
1226 | } | |
1227 | return -1; | |
1228 | } | |
1229 | ||
1230 | IV | |
2dc2558e | 1231 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1232 | { |
8772537c AL |
1233 | PERL_UNUSED_ARG(mode); |
1234 | PERL_UNUSED_ARG(arg); | |
1235 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1236 | |
04892f78 | 1237 | if (PerlIOValid(f)) { |
86e05cf2 | 1238 | PerlIO *t; |
de009b76 | 1239 | const PerlIOl *l; |
14a5cf38 | 1240 | PerlIO_flush(f); |
86e05cf2 NIS |
1241 | /* |
1242 | * Strip all layers that are not suitable for a raw stream | |
1243 | */ | |
1244 | t = f; | |
1245 | while (t && (l = *t)) { | |
1246 | if (l->tab->Binmode) { | |
1247 | /* Has a handler - normal case */ | |
1248 | if ((*l->tab->Binmode)(aTHX_ f) == 0) { | |
1249 | if (*t == l) { | |
1250 | /* Layer still there - move down a layer */ | |
1251 | t = PerlIONext(t); | |
1252 | } | |
1253 | } | |
1254 | else { | |
1255 | return -1; | |
1256 | } | |
14a5cf38 JH |
1257 | } |
1258 | else { | |
86e05cf2 NIS |
1259 | /* No handler - pop it */ |
1260 | PerlIO_pop(aTHX_ t); | |
14a5cf38 JH |
1261 | } |
1262 | } | |
86e05cf2 NIS |
1263 | if (PerlIOValid(f)) { |
1264 | PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); | |
1265 | return 0; | |
1266 | } | |
14a5cf38 JH |
1267 | } |
1268 | return -1; | |
dfebf958 NIS |
1269 | } |
1270 | ||
ac27b0f5 | 1271 | int |
14a5cf38 | 1272 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
d9dac8cd | 1273 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1274 | { |
14a5cf38 JH |
1275 | int code = 0; |
1276 | while (n < max) { | |
8772537c | 1277 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
14a5cf38 JH |
1278 | if (tab) { |
1279 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1280 | code = -1; | |
1281 | break; | |
1282 | } | |
1283 | } | |
1284 | n++; | |
1285 | } | |
1286 | return code; | |
e3f3bf95 NIS |
1287 | } |
1288 | ||
1289 | int | |
ac27b0f5 NIS |
1290 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1291 | { | |
14a5cf38 | 1292 | int code = 0; |
53f1b6d2 | 1293 | if (f && names) { |
8772537c | 1294 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
14a5cf38 JH |
1295 | code = PerlIO_parse_layers(aTHX_ layers, names); |
1296 | if (code == 0) { | |
d9dac8cd | 1297 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); |
14a5cf38 | 1298 | } |
3a1ee7e8 | 1299 | PerlIO_list_free(aTHX_ layers); |
ac27b0f5 | 1300 | } |
14a5cf38 | 1301 | return code; |
ac27b0f5 NIS |
1302 | } |
1303 | ||
f3862f8b | 1304 | |
60382766 | 1305 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1306 | /* |
71200d45 | 1307 | * Given the abstraction above the public API functions |
14a5cf38 | 1308 | */ |
60382766 NIS |
1309 | |
1310 | int | |
f5b9d040 | 1311 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1312 | { |
68b5363f PD |
1313 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, |
1314 | (PerlIOBase(f)) ? PerlIOBase(f)->tab->name : "(Null)", | |
1315 | iotype, mode, (names) ? names : "(Null)"); | |
1316 | ||
03c0554d NIS |
1317 | if (names) { |
1318 | /* Do not flush etc. if (e.g.) switching encodings. | |
1319 | if a pushed layer knows it needs to flush lower layers | |
1320 | (for example :unix which is never going to call them) | |
1321 | it can do the flush when it is pushed. | |
1322 | */ | |
1323 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; | |
1324 | } | |
1325 | else { | |
86e05cf2 | 1326 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1327 | #ifdef PERLIO_USING_CRLF |
03c0554d NIS |
1328 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1329 | O_BINARY so we can look for it in mode. | |
1330 | */ | |
1331 | if (!(mode & O_BINARY)) { | |
1332 | /* Text mode */ | |
86e05cf2 NIS |
1333 | /* FIXME?: Looking down the layer stack seems wrong, |
1334 | but is a way of reaching past (say) an encoding layer | |
1335 | to flip CRLF-ness of the layer(s) below | |
1336 | */ | |
03c0554d NIS |
1337 | while (*f) { |
1338 | /* Perhaps we should turn on bottom-most aware layer | |
1339 | e.g. Ilya's idea that UNIX TTY could serve | |
1340 | */ | |
1341 | if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { | |
1342 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1343 | /* Not in text mode - flush any pending stuff and flip it */ | |
1344 | PerlIO_flush(f); | |
1345 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1346 | } | |
1347 | /* Only need to turn it on in one layer so we are done */ | |
1348 | return TRUE; | |
ed53a2bb | 1349 | } |
03c0554d | 1350 | f = PerlIONext(f); |
14a5cf38 | 1351 | } |
03c0554d NIS |
1352 | /* Not finding a CRLF aware layer presumably means we are binary |
1353 | which is not what was requested - so we failed | |
1354 | We _could_ push :crlf layer but so could caller | |
1355 | */ | |
1356 | return FALSE; | |
14a5cf38 | 1357 | } |
6ce75a77 | 1358 | #endif |
86e05cf2 NIS |
1359 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1360 | So code that used to be here is now in PerlIORaw_pushed(). | |
03c0554d | 1361 | */ |
a0714e2c | 1362 | return PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL) ? TRUE : FALSE; |
14a5cf38 | 1363 | } |
f5b9d040 NIS |
1364 | } |
1365 | ||
f5b9d040 | 1366 | int |
e87a358a | 1367 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1368 | { |
37725cdc | 1369 | if (PerlIOValid(f)) { |
46c461b5 | 1370 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
37725cdc NIS |
1371 | if (tab && tab->Close) |
1372 | return (*tab->Close)(aTHX_ f); | |
1373 | else | |
1374 | return PerlIOBase_close(aTHX_ f); | |
1375 | } | |
14a5cf38 | 1376 | else { |
93189314 | 1377 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1378 | return -1; |
1379 | } | |
76ced9ad NIS |
1380 | } |
1381 | ||
b931b1d9 | 1382 | int |
e87a358a | 1383 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1384 | { |
de009b76 | 1385 | const int code = PerlIO__close(aTHX_ f); |
37725cdc NIS |
1386 | while (PerlIOValid(f)) { |
1387 | PerlIO_pop(aTHX_ f); | |
f6c77cf1 | 1388 | } |
14a5cf38 | 1389 | return code; |
b931b1d9 NIS |
1390 | } |
1391 | ||
b931b1d9 | 1392 | int |
e87a358a | 1393 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1394 | { |
97aff369 | 1395 | dVAR; |
b32dd47e | 1396 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1397 | } |
1398 | ||
1141d9f8 NIS |
1399 | static const char * |
1400 | PerlIO_context_layers(pTHX_ const char *mode) | |
1401 | { | |
97aff369 | 1402 | dVAR; |
14a5cf38 JH |
1403 | const char *type = NULL; |
1404 | /* | |
71200d45 | 1405 | * Need to supply default layer info from open.pm |
14a5cf38 JH |
1406 | */ |
1407 | if (PL_curcop) { | |
dcda55fc | 1408 | SV * const layers = PL_curcop->cop_io; |
14a5cf38 JH |
1409 | if (layers) { |
1410 | STRLEN len; | |
b83604b4 | 1411 | type = SvPV_const(layers, len); |
14a5cf38 JH |
1412 | if (type && mode[0] != 'r') { |
1413 | /* | |
71200d45 | 1414 | * Skip to write part |
14a5cf38 | 1415 | */ |
dcda55fc | 1416 | const char * const s = strchr(type, 0); |
eb160463 | 1417 | if (s && (STRLEN)(s - type) < len) { |
14a5cf38 JH |
1418 | type = s + 1; |
1419 | } | |
1420 | } | |
1421 | } | |
1422 | } | |
1423 | return type; | |
1141d9f8 NIS |
1424 | } |
1425 | ||
fcf2db38 | 1426 | static PerlIO_funcs * |
2edd7e44 NIS |
1427 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1428 | { | |
97aff369 | 1429 | dVAR; |
14a5cf38 | 1430 | /* |
71200d45 | 1431 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 JH |
1432 | */ |
1433 | if (SvTYPE(sv) < SVt_PVAV) | |
6a245ed1 | 1434 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
14a5cf38 JH |
1435 | |
1436 | /* | |
71200d45 | 1437 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1438 | */ |
1439 | switch (SvTYPE(sv)) { | |
1440 | case SVt_PVAV: | |
6a245ed1 | 1441 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1442 | case SVt_PVHV: |
6a245ed1 | 1443 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1444 | case SVt_PVCV: |
6a245ed1 | 1445 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1446 | case SVt_PVGV: |
6a245ed1 | 1447 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
14a5cf38 JH |
1448 | } |
1449 | return NULL; | |
2edd7e44 NIS |
1450 | } |
1451 | ||
fcf2db38 | 1452 | PerlIO_list_t * |
14a5cf38 JH |
1453 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1454 | const char *mode, int narg, SV **args) | |
1455 | { | |
97aff369 | 1456 | dVAR; |
14a5cf38 JH |
1457 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); |
1458 | int incdef = 1; | |
a1ea730d | 1459 | if (!PL_perlio) |
14a5cf38 JH |
1460 | PerlIO_stdstreams(aTHX); |
1461 | if (narg) { | |
dcda55fc | 1462 | SV * const arg = *args; |
14a5cf38 | 1463 | /* |
71200d45 NIS |
1464 | * If it is a reference but not an object see if we have a handler |
1465 | * for it | |
14a5cf38 JH |
1466 | */ |
1467 | if (SvROK(arg) && !sv_isobject(arg)) { | |
46c461b5 | 1468 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); |
14a5cf38 | 1469 | if (handler) { |
3a1ee7e8 NIS |
1470 | def = PerlIO_list_alloc(aTHX); |
1471 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
14a5cf38 JH |
1472 | incdef = 0; |
1473 | } | |
1474 | /* | |
e934609f | 1475 | * Don't fail if handler cannot be found :via(...) etc. may do |
14a5cf38 | 1476 | * something sensible else we will just stringfy and open |
71200d45 | 1477 | * resulting string. |
14a5cf38 JH |
1478 | */ |
1479 | } | |
1480 | } | |
9fe371da | 1481 | if (!layers || !*layers) |
14a5cf38 JH |
1482 | layers = PerlIO_context_layers(aTHX_ mode); |
1483 | if (layers && *layers) { | |
1484 | PerlIO_list_t *av; | |
1485 | if (incdef) { | |
de009b76 | 1486 | IV i; |
3a1ee7e8 | 1487 | av = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1488 | for (i = 0; i < def->cur; i++) { |
3a1ee7e8 | 1489 | PerlIO_list_push(aTHX_ av, def->array[i].funcs, |
14a5cf38 JH |
1490 | def->array[i].arg); |
1491 | } | |
1492 | } | |
1493 | else { | |
1494 | av = def; | |
1495 | } | |
0cff2cf3 NIS |
1496 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { |
1497 | return av; | |
1498 | } | |
1499 | else { | |
1500 | PerlIO_list_free(aTHX_ av); | |
b37c2d43 | 1501 | return NULL; |
0cff2cf3 | 1502 | } |
14a5cf38 JH |
1503 | } |
1504 | else { | |
1505 | if (incdef) | |
1506 | def->refcnt++; | |
1507 | return def; | |
1508 | } | |
ee518936 NIS |
1509 | } |
1510 | ||
1511 | PerlIO * | |
14a5cf38 JH |
1512 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1513 | int imode, int perm, PerlIO *f, int narg, SV **args) | |
1514 | { | |
97aff369 | 1515 | dVAR; |
14a5cf38 JH |
1516 | if (!f && narg == 1 && *args == &PL_sv_undef) { |
1517 | if ((f = PerlIO_tmpfile())) { | |
9fe371da | 1518 | if (!layers || !*layers) |
14a5cf38 JH |
1519 | layers = PerlIO_context_layers(aTHX_ mode); |
1520 | if (layers && *layers) | |
1521 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1522 | } | |
1523 | } | |
1524 | else { | |
de009b76 | 1525 | PerlIO_list_t *layera; |
14a5cf38 JH |
1526 | IV n; |
1527 | PerlIO_funcs *tab = NULL; | |
04892f78 | 1528 | if (PerlIOValid(f)) { |
14a5cf38 | 1529 | /* |
71200d45 NIS |
1530 | * This is "reopen" - it is not tested as perl does not use it |
1531 | * yet | |
14a5cf38 JH |
1532 | */ |
1533 | PerlIOl *l = *f; | |
3a1ee7e8 | 1534 | layera = PerlIO_list_alloc(aTHX); |
14a5cf38 | 1535 | while (l) { |
46c461b5 | 1536 | SV * const arg = (l->tab->Getarg) |
04892f78 NIS |
1537 | ? (*l->tab->Getarg) (aTHX_ &l, NULL, 0) |
1538 | : &PL_sv_undef; | |
3a1ee7e8 | 1539 | PerlIO_list_push(aTHX_ layera, l->tab, arg); |
14a5cf38 JH |
1540 | l = *PerlIONext(&l); |
1541 | } | |
1542 | } | |
1543 | else { | |
1544 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
0cff2cf3 NIS |
1545 | if (!layera) { |
1546 | return NULL; | |
1547 | } | |
14a5cf38 JH |
1548 | } |
1549 | /* | |
71200d45 | 1550 | * Start at "top" of layer stack |
14a5cf38 JH |
1551 | */ |
1552 | n = layera->cur - 1; | |
1553 | while (n >= 0) { | |
46c461b5 | 1554 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); |
14a5cf38 JH |
1555 | if (t && t->Open) { |
1556 | tab = t; | |
1557 | break; | |
1558 | } | |
1559 | n--; | |
1560 | } | |
1561 | if (tab) { | |
1562 | /* | |
71200d45 | 1563 | * Found that layer 'n' can do opens - call it |
14a5cf38 | 1564 | */ |
7cf31beb | 1565 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { |
3b8752bb | 1566 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); |
7cf31beb | 1567 | } |
14a5cf38 | 1568 | PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", |
355d3743 PD |
1569 | tab->name, layers ? layers : "(Null)", mode, fd, |
1570 | imode, perm, (void*)f, narg, (void*)args); | |
210e727c JH |
1571 | if (tab->Open) |
1572 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1573 | f, narg, args); | |
1574 | else { | |
1575 | SETERRNO(EINVAL, LIB_INVARG); | |
1576 | f = NULL; | |
1577 | } | |
14a5cf38 JH |
1578 | if (f) { |
1579 | if (n + 1 < layera->cur) { | |
1580 | /* | |
1581 | * More layers above the one that we used to open - | |
71200d45 | 1582 | * apply them now |
14a5cf38 | 1583 | */ |
d9dac8cd NIS |
1584 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { |
1585 | /* If pushing layers fails close the file */ | |
1586 | PerlIO_close(f); | |
14a5cf38 JH |
1587 | f = NULL; |
1588 | } | |
1589 | } | |
1590 | } | |
1591 | } | |
3a1ee7e8 | 1592 | PerlIO_list_free(aTHX_ layera); |
14a5cf38 JH |
1593 | } |
1594 | return f; | |
ee518936 | 1595 | } |
b931b1d9 NIS |
1596 | |
1597 | ||
9e353e3b | 1598 | SSize_t |
e87a358a | 1599 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1600 | { |
b32dd47e | 1601 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1602 | } |
1603 | ||
313ca112 | 1604 | SSize_t |
e87a358a | 1605 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1606 | { |
b32dd47e | 1607 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1608 | } |
1609 | ||
9e353e3b | 1610 | SSize_t |
e87a358a | 1611 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1612 | { |
b32dd47e | 1613 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1614 | } |
1615 | ||
6f9d8c32 | 1616 | int |
e87a358a | 1617 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1618 | { |
b32dd47e | 1619 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1620 | } |
1621 | ||
9e353e3b | 1622 | Off_t |
e87a358a | 1623 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1624 | { |
b32dd47e | 1625 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1626 | } |
1627 | ||
6f9d8c32 | 1628 | int |
e87a358a | 1629 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1630 | { |
97aff369 | 1631 | dVAR; |
14a5cf38 JH |
1632 | if (f) { |
1633 | if (*f) { | |
de009b76 | 1634 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1635 | |
1636 | if (tab && tab->Flush) | |
f62ce20a | 1637 | return (*tab->Flush) (aTHX_ f); |
1b7a0411 JH |
1638 | else |
1639 | return 0; /* If no Flush defined, silently succeed. */ | |
14a5cf38 JH |
1640 | } |
1641 | else { | |
fe5a182c | 1642 | PerlIO_debug("Cannot flush f=%p\n", (void*)f); |
93189314 | 1643 | SETERRNO(EBADF, SS_IVCHAN); |
14a5cf38 JH |
1644 | return -1; |
1645 | } | |
1646 | } | |
1647 | else { | |
1648 | /* | |
1649 | * Is it good API design to do flush-all on NULL, a potentially | |
1650 | * errorneous input? Maybe some magical value (PerlIO* | |
1651 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1652 | * things on fflush(NULL), but should we be bound by their design | |
71200d45 | 1653 | * decisions? --jhi |
14a5cf38 | 1654 | */ |
a1ea730d | 1655 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1656 | int code = 0; |
1657 | while ((f = *table)) { | |
1658 | int i; | |
1659 | table = (PerlIO **) (f++); | |
1660 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1661 | if (*f && PerlIO_flush(f) != 0) | |
1662 | code = -1; | |
1663 | f++; | |
1664 | } | |
1665 | } | |
1666 | return code; | |
1667 | } | |
760ac839 LW |
1668 | } |
1669 | ||
a9c883f6 | 1670 | void |
f62ce20a | 1671 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1672 | { |
97aff369 | 1673 | dVAR; |
a1ea730d | 1674 | PerlIO **table = &PL_perlio; |
14a5cf38 JH |
1675 | PerlIO *f; |
1676 | while ((f = *table)) { | |
1677 | int i; | |
1678 | table = (PerlIO **) (f++); | |
1679 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { | |
1680 | if (*f | |
1681 | && (PerlIOBase(f)-> | |
1682 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1683 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1684 | PerlIO_flush(f); | |
1685 | f++; | |
1686 | } | |
a9c883f6 | 1687 | } |
a9c883f6 NIS |
1688 | } |
1689 | ||
06da4f11 | 1690 | int |
e87a358a | 1691 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1692 | { |
b32dd47e | 1693 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1694 | } |
1695 | ||
f3862f8b NIS |
1696 | int |
1697 | PerlIO_isutf8(PerlIO *f) | |
1698 | { | |
1b7a0411 JH |
1699 | if (PerlIOValid(f)) |
1700 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; | |
1701 | else | |
1702 | SETERRNO(EBADF, SS_IVCHAN); | |
37725cdc | 1703 | |
1b7a0411 | 1704 | return -1; |
f3862f8b NIS |
1705 | } |
1706 | ||
6f9d8c32 | 1707 | int |
e87a358a | 1708 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1709 | { |
b32dd47e | 1710 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1711 | } |
1712 | ||
9e353e3b | 1713 | int |
e87a358a | 1714 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1715 | { |
b32dd47e | 1716 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1717 | } |
1718 | ||
9e353e3b | 1719 | void |
e87a358a | 1720 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1721 | { |
b32dd47e | 1722 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1723 | } |
1724 | ||
9e353e3b | 1725 | void |
e87a358a | 1726 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1727 | { |
b32dd47e | 1728 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1729 | } |
1730 | ||
9e353e3b NIS |
1731 | int |
1732 | PerlIO_has_base(PerlIO *f) | |
1733 | { | |
1b7a0411 | 1734 | if (PerlIOValid(f)) { |
46c461b5 | 1735 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1736 | |
1737 | if (tab) | |
1738 | return (tab->Get_base != NULL); | |
1739 | SETERRNO(EINVAL, LIB_INVARG); | |
1740 | } | |
1741 | else | |
1742 | SETERRNO(EBADF, SS_IVCHAN); | |
1743 | ||
1744 | return 0; | |
760ac839 LW |
1745 | } |
1746 | ||
9e353e3b NIS |
1747 | int |
1748 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1749 | { |
04892f78 | 1750 | if (PerlIOValid(f) && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) { |
46c461b5 | 1751 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1752 | |
1753 | if (tab) | |
1754 | return (tab->Set_ptrcnt != NULL); | |
1755 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1756 | } |
1b7a0411 JH |
1757 | else |
1758 | SETERRNO(EBADF, SS_IVCHAN); | |
1759 | ||
14a5cf38 | 1760 | return 0; |
9e353e3b NIS |
1761 | } |
1762 | ||
9e353e3b NIS |
1763 | int |
1764 | PerlIO_has_cntptr(PerlIO *f) | |
1765 | { | |
04892f78 | 1766 | if (PerlIOValid(f)) { |
46c461b5 | 1767 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1768 | |
1769 | if (tab) | |
1770 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
1771 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1772 | } |
1b7a0411 JH |
1773 | else |
1774 | SETERRNO(EBADF, SS_IVCHAN); | |
1775 | ||
14a5cf38 | 1776 | return 0; |
9e353e3b NIS |
1777 | } |
1778 | ||
9e353e3b NIS |
1779 | int |
1780 | PerlIO_canset_cnt(PerlIO *f) | |
1781 | { | |
04892f78 | 1782 | if (PerlIOValid(f)) { |
46c461b5 | 1783 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 JH |
1784 | |
1785 | if (tab) | |
1786 | return (tab->Set_ptrcnt != NULL); | |
1787 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 1788 | } |
1b7a0411 JH |
1789 | else |
1790 | SETERRNO(EBADF, SS_IVCHAN); | |
1791 | ||
14a5cf38 | 1792 | return 0; |
760ac839 LW |
1793 | } |
1794 | ||
888911fc | 1795 | STDCHAR * |
e87a358a | 1796 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1797 | { |
b32dd47e | 1798 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1799 | } |
1800 | ||
9e353e3b | 1801 | int |
e87a358a | 1802 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1803 | { |
b32dd47e | 1804 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1805 | } |
1806 | ||
9e353e3b | 1807 | STDCHAR * |
e87a358a | 1808 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1809 | { |
b32dd47e | 1810 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1811 | } |
1812 | ||
05d1247b | 1813 | int |
e87a358a | 1814 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1815 | { |
b32dd47e | 1816 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1817 | } |
1818 | ||
9e353e3b | 1819 | void |
e87a358a | 1820 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) |
9e353e3b | 1821 | { |
b32dd47e | 1822 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1823 | } |
1824 | ||
9e353e3b | 1825 | void |
e87a358a | 1826 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) |
9e353e3b | 1827 | { |
b32dd47e | 1828 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1829 | } |
1830 | ||
4ec2216f | 1831 | |
9e353e3b | 1832 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1833 | /* |
71200d45 | 1834 | * utf8 and raw dummy layers |
14a5cf38 | 1835 | */ |
dfebf958 | 1836 | |
26fb694e | 1837 | IV |
2dc2558e | 1838 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1839 | { |
96a5add6 | 1840 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1841 | PERL_UNUSED_ARG(mode); |
1842 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1843 | if (PerlIOValid(f)) { |
14a5cf38 JH |
1844 | if (tab->kind & PERLIO_K_UTF8) |
1845 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1846 | else | |
1847 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1848 | return 0; | |
1849 | } | |
1850 | return -1; | |
26fb694e NIS |
1851 | } |
1852 | ||
27da23d5 | 1853 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1854 | sizeof(PerlIO_funcs), |
14a5cf38 | 1855 | "utf8", |
2dc2558e | 1856 | 0, |
6874a2de | 1857 | PERLIO_K_DUMMY | PERLIO_K_UTF8, |
14a5cf38 JH |
1858 | PerlIOUtf8_pushed, |
1859 | NULL, | |
1860 | NULL, | |
1861 | NULL, | |
1862 | NULL, | |
1863 | NULL, | |
1864 | NULL, | |
1865 | NULL, | |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
de009b76 AL |
1869 | NULL, |
1870 | NULL, | |
22569500 NIS |
1871 | NULL, /* flush */ |
1872 | NULL, /* fill */ | |
14a5cf38 JH |
1873 | NULL, |
1874 | NULL, | |
1875 | NULL, | |
1876 | NULL, | |
22569500 NIS |
1877 | NULL, /* get_base */ |
1878 | NULL, /* get_bufsiz */ | |
1879 | NULL, /* get_ptr */ | |
1880 | NULL, /* get_cnt */ | |
1881 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1882 | }; |
1883 | ||
27da23d5 | 1884 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1885 | sizeof(PerlIO_funcs), |
14a5cf38 | 1886 | "bytes", |
2dc2558e | 1887 | 0, |
14a5cf38 JH |
1888 | PERLIO_K_DUMMY, |
1889 | PerlIOUtf8_pushed, | |
1890 | NULL, | |
1891 | NULL, | |
1892 | NULL, | |
1893 | NULL, | |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
de009b76 AL |
1900 | NULL, |
1901 | NULL, | |
22569500 NIS |
1902 | NULL, /* flush */ |
1903 | NULL, /* fill */ | |
14a5cf38 JH |
1904 | NULL, |
1905 | NULL, | |
1906 | NULL, | |
1907 | NULL, | |
22569500 NIS |
1908 | NULL, /* get_base */ |
1909 | NULL, /* get_bufsiz */ | |
1910 | NULL, /* get_ptr */ | |
1911 | NULL, /* get_cnt */ | |
1912 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1913 | }; |
1914 | ||
1915 | PerlIO * | |
14a5cf38 JH |
1916 | PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1917 | IV n, const char *mode, int fd, int imode, int perm, | |
1918 | PerlIO *old, int narg, SV **args) | |
dfebf958 | 1919 | { |
8772537c AL |
1920 | PerlIO_funcs * const tab = PerlIO_default_btm(); |
1921 | PERL_UNUSED_ARG(self); | |
210e727c JH |
1922 | if (tab && tab->Open) |
1923 | return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
1924 | old, narg, args); | |
1925 | SETERRNO(EINVAL, LIB_INVARG); | |
1926 | return NULL; | |
dfebf958 NIS |
1927 | } |
1928 | ||
27da23d5 | 1929 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1930 | sizeof(PerlIO_funcs), |
14a5cf38 | 1931 | "raw", |
2dc2558e | 1932 | 0, |
14a5cf38 JH |
1933 | PERLIO_K_DUMMY, |
1934 | PerlIORaw_pushed, | |
1935 | PerlIOBase_popped, | |
1936 | PerlIORaw_open, | |
1937 | NULL, | |
1938 | NULL, | |
1939 | NULL, | |
1940 | NULL, | |
1941 | NULL, | |
1942 | NULL, | |
1943 | NULL, | |
1944 | NULL, | |
de009b76 AL |
1945 | NULL, |
1946 | NULL, | |
22569500 NIS |
1947 | NULL, /* flush */ |
1948 | NULL, /* fill */ | |
14a5cf38 JH |
1949 | NULL, |
1950 | NULL, | |
1951 | NULL, | |
1952 | NULL, | |
22569500 NIS |
1953 | NULL, /* get_base */ |
1954 | NULL, /* get_bufsiz */ | |
1955 | NULL, /* get_ptr */ | |
1956 | NULL, /* get_cnt */ | |
1957 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1958 | }; |
1959 | /*--------------------------------------------------------------------------------------*/ | |
1960 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1961 | /* |
71200d45 | 1962 | * "Methods" of the "base class" |
14a5cf38 | 1963 | */ |
9e353e3b NIS |
1964 | |
1965 | IV | |
f62ce20a | 1966 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1967 | { |
04892f78 | 1968 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1969 | } |
1970 | ||
f5b9d040 | 1971 | char * |
81428673 | 1972 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1973 | { |
1974 | char *s = buf; | |
81428673 | 1975 | if (PerlIOValid(f)) { |
de009b76 | 1976 | const IV flags = PerlIOBase(f)->flags; |
81428673 NIS |
1977 | if (flags & PERLIO_F_APPEND) { |
1978 | *s++ = 'a'; | |
1979 | if (flags & PERLIO_F_CANREAD) { | |
1980 | *s++ = '+'; | |
1981 | } | |
14a5cf38 | 1982 | } |
81428673 NIS |
1983 | else if (flags & PERLIO_F_CANREAD) { |
1984 | *s++ = 'r'; | |
1985 | if (flags & PERLIO_F_CANWRITE) | |
1986 | *s++ = '+'; | |
1987 | } | |
1988 | else if (flags & PERLIO_F_CANWRITE) { | |
1989 | *s++ = 'w'; | |
1990 | if (flags & PERLIO_F_CANREAD) { | |
1991 | *s++ = '+'; | |
1992 | } | |
14a5cf38 | 1993 | } |
35990314 | 1994 | #ifdef PERLIO_USING_CRLF |
81428673 NIS |
1995 | if (!(flags & PERLIO_F_CRLF)) |
1996 | *s++ = 'b'; | |
5f1a76d0 | 1997 | #endif |
81428673 | 1998 | } |
14a5cf38 JH |
1999 | *s = '\0'; |
2000 | return buf; | |
f5b9d040 NIS |
2001 | } |
2002 | ||
81428673 | 2003 | |
76ced9ad | 2004 | IV |
2dc2558e | 2005 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 2006 | { |
de009b76 | 2007 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 2008 | PERL_UNUSED_CONTEXT; |
8772537c | 2009 | PERL_UNUSED_ARG(arg); |
de009b76 | 2010 | |
14a5cf38 JH |
2011 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
2012 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); | |
2013 | if (tab->Set_ptrcnt != NULL) | |
2014 | l->flags |= PERLIO_F_FASTGETS; | |
2015 | if (mode) { | |
3b6c1aba | 2016 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2017 | mode++; |
2018 | switch (*mode++) { | |
2019 | case 'r': | |
2020 | l->flags |= PERLIO_F_CANREAD; | |
2021 | break; | |
2022 | case 'a': | |
2023 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
2024 | break; | |
2025 | case 'w': | |
2026 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
2027 | break; | |
2028 | default: | |
93189314 | 2029 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2030 | return -1; |
2031 | } | |
2032 | while (*mode) { | |
2033 | switch (*mode++) { | |
2034 | case '+': | |
2035 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2036 | break; | |
2037 | case 'b': | |
2038 | l->flags &= ~PERLIO_F_CRLF; | |
2039 | break; | |
2040 | case 't': | |
2041 | l->flags |= PERLIO_F_CRLF; | |
2042 | break; | |
2043 | default: | |
93189314 | 2044 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2045 | return -1; |
2046 | } | |
2047 | } | |
2048 | } | |
2049 | else { | |
2050 | if (l->next) { | |
2051 | l->flags |= l->next->flags & | |
2052 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2053 | PERLIO_F_APPEND); | |
2054 | } | |
2055 | } | |
5e2ab84b | 2056 | #if 0 |
14a5cf38 JH |
2057 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
2058 | f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", | |
2059 | l->flags, PerlIO_modestr(f, temp)); | |
5e2ab84b | 2060 | #endif |
14a5cf38 | 2061 | return 0; |
76ced9ad NIS |
2062 | } |
2063 | ||
2064 | IV | |
f62ce20a | 2065 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2066 | { |
96a5add6 | 2067 | PERL_UNUSED_CONTEXT; |
8772537c | 2068 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2069 | return 0; |
760ac839 LW |
2070 | } |
2071 | ||
9e353e3b | 2072 | SSize_t |
f62ce20a | 2073 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2074 | { |
14a5cf38 | 2075 | /* |
71200d45 | 2076 | * Save the position as current head considers it |
14a5cf38 | 2077 | */ |
de009b76 | 2078 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2079 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2080 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2081 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2082 | } |
2083 | ||
f6c77cf1 | 2084 | SSize_t |
f62ce20a | 2085 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2086 | { |
14a5cf38 JH |
2087 | STDCHAR *buf = (STDCHAR *) vbuf; |
2088 | if (f) { | |
263df5f1 JH |
2089 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
2090 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2091 | SETERRNO(EBADF, SS_IVCHAN); | |
2092 | return 0; | |
2093 | } | |
14a5cf38 | 2094 | while (count > 0) { |
93c2c2ec IZ |
2095 | get_cnt: |
2096 | { | |
14a5cf38 JH |
2097 | SSize_t avail = PerlIO_get_cnt(f); |
2098 | SSize_t take = 0; | |
2099 | if (avail > 0) | |
eb160463 | 2100 | take = ((SSize_t)count < avail) ? count : avail; |
14a5cf38 JH |
2101 | if (take > 0) { |
2102 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2103 | Copy(ptr, buf, take, STDCHAR); | |
2104 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2105 | count -= take; | |
2106 | buf += take; | |
93c2c2ec IZ |
2107 | if (avail == 0) /* set_ptrcnt could have reset avail */ |
2108 | goto get_cnt; | |
14a5cf38 JH |
2109 | } |
2110 | if (count > 0 && avail <= 0) { | |
2111 | if (PerlIO_fill(f) != 0) | |
2112 | break; | |
2113 | } | |
93c2c2ec | 2114 | } |
14a5cf38 JH |
2115 | } |
2116 | return (buf - (STDCHAR *) vbuf); | |
2117 | } | |
f6c77cf1 | 2118 | return 0; |
f6c77cf1 NIS |
2119 | } |
2120 | ||
9e353e3b | 2121 | IV |
f62ce20a | 2122 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2123 | { |
96a5add6 | 2124 | PERL_UNUSED_CONTEXT; |
8772537c | 2125 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2126 | return 0; |
9e353e3b NIS |
2127 | } |
2128 | ||
2129 | IV | |
f62ce20a | 2130 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2131 | { |
96a5add6 | 2132 | PERL_UNUSED_CONTEXT; |
8772537c | 2133 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2134 | return -1; |
06da4f11 NIS |
2135 | } |
2136 | ||
2137 | IV | |
f62ce20a | 2138 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2139 | { |
37725cdc NIS |
2140 | IV code = -1; |
2141 | if (PerlIOValid(f)) { | |
2142 | PerlIO *n = PerlIONext(f); | |
2143 | code = PerlIO_flush(f); | |
2144 | PerlIOBase(f)->flags &= | |
2145 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2146 | while (PerlIOValid(n)) { | |
de009b76 | 2147 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; |
37725cdc NIS |
2148 | if (tab && tab->Close) { |
2149 | if ((*tab->Close)(aTHX_ n) != 0) | |
2150 | code = -1; | |
2151 | break; | |
2152 | } | |
2153 | else { | |
2154 | PerlIOBase(n)->flags &= | |
2155 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2156 | } | |
2157 | n = PerlIONext(n); | |
2158 | } | |
2159 | } | |
2160 | else { | |
2161 | SETERRNO(EBADF, SS_IVCHAN); | |
2162 | } | |
14a5cf38 | 2163 | return code; |
9e353e3b NIS |
2164 | } |
2165 | ||
2166 | IV | |
f62ce20a | 2167 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2168 | { |
96a5add6 | 2169 | PERL_UNUSED_CONTEXT; |
04892f78 | 2170 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2171 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
2172 | } | |
2173 | return 1; | |
9e353e3b NIS |
2174 | } |
2175 | ||
2176 | IV | |
f62ce20a | 2177 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2178 | { |
96a5add6 | 2179 | PERL_UNUSED_CONTEXT; |
04892f78 | 2180 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2181 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
2182 | } | |
2183 | return 1; | |
9e353e3b NIS |
2184 | } |
2185 | ||
2186 | void | |
f62ce20a | 2187 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2188 | { |
04892f78 | 2189 | if (PerlIOValid(f)) { |
dcda55fc | 2190 | PerlIO * const n = PerlIONext(f); |
14a5cf38 | 2191 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); |
04892f78 | 2192 | if (PerlIOValid(n)) |
14a5cf38 JH |
2193 | PerlIO_clearerr(n); |
2194 | } | |
9e353e3b NIS |
2195 | } |
2196 | ||
2197 | void | |
f62ce20a | 2198 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2199 | { |
96a5add6 | 2200 | PERL_UNUSED_CONTEXT; |
04892f78 | 2201 | if (PerlIOValid(f)) { |
14a5cf38 JH |
2202 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
2203 | } | |
9e353e3b NIS |
2204 | } |
2205 | ||
93a8090d NIS |
2206 | SV * |
2207 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2208 | { | |
2209 | if (!arg) | |
a0714e2c | 2210 | return NULL; |
93a8090d NIS |
2211 | #ifdef sv_dup |
2212 | if (param) { | |
2213 | return sv_dup(arg, param); | |
2214 | } | |
2215 | else { | |
2216 | return newSVsv(arg); | |
2217 | } | |
2218 | #else | |
1b6737cc | 2219 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2220 | return newSVsv(arg); |
2221 | #endif | |
2222 | } | |
2223 | ||
2224 | PerlIO * | |
ecdeb87c | 2225 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2226 | { |
1b6737cc | 2227 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2228 | if (PerlIOValid(nexto)) { |
de009b76 | 2229 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
37725cdc NIS |
2230 | if (tab && tab->Dup) |
2231 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2232 | else | |
2233 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2234 | } |
2235 | if (f) { | |
dcda55fc | 2236 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
210e727c | 2237 | SV *arg; |
93a8090d | 2238 | char buf[8]; |
fe5a182c JH |
2239 | PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", |
2240 | self->name, (void*)f, (void*)o, (void*)param); | |
210e727c JH |
2241 | if (self->Getarg) |
2242 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
2243 | else { | |
a0714e2c | 2244 | arg = NULL; |
93a8090d NIS |
2245 | } |
2246 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); | |
ecdeb87c | 2247 | if (arg) { |
93a8090d NIS |
2248 | SvREFCNT_dec(arg); |
2249 | } | |
2250 | } | |
2251 | return f; | |
2252 | } | |
2253 | ||
168d5872 | 2254 | #ifdef USE_THREADS |
93a8090d | 2255 | perl_mutex PerlIO_mutex; |
93a8090d | 2256 | #endif |
27da23d5 JH |
2257 | |
2258 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ | |
93a8090d | 2259 | |
22c96fc1 NC |
2260 | /* Must be called with PerlIO_mutex locked. */ |
2261 | static void | |
2262 | S_more_refcounted_fds(pTHX_ const int new_fd) { | |
2263 | const int old_max = PL_perlio_fd_refcnt_size; | |
f4ae5be6 | 2264 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2265 | int *new_array; |
2266 | ||
2267 | PerlIO_debug("More fds - old=%d, need %d, new=%d\n", | |
2268 | old_max, new_fd, new_max); | |
2269 | ||
2270 | if (new_fd < old_max) { | |
2271 | return; | |
2272 | } | |
2273 | ||
f4ae5be6 NC |
2274 | assert (new_max > new_fd); |
2275 | ||
22c96fc1 NC |
2276 | new_array |
2277 | = PerlMemShared_realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
2278 | ||
2279 | if (!new_array) { | |
2280 | #ifdef USE_THREADS | |
2281 | MUTEX_UNLOCK(&PerlIO_mutex); | |
2282 | #endif | |
2283 | /* Can't use PerlIO to write as it allocates memory */ | |
2284 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
2285 | PL_no_mem, strlen(PL_no_mem)); | |
2286 | my_exit(1); | |
2287 | } | |
2288 | ||
2289 | PL_perlio_fd_refcnt_size = new_max; | |
2290 | PL_perlio_fd_refcnt = new_array; | |
2291 | ||
2292 | PerlIO_debug("Zeroing %p, %d\n", new_array + old_max, new_max - old_max); | |
2293 | ||
2294 | Zero(new_array + old_max, new_max - old_max, int); | |
2295 | } | |
2296 | ||
2297 | ||
93a8090d NIS |
2298 | void |
2299 | PerlIO_init(pTHX) | |
2300 | { | |
2301 | /* Place holder for stdstreams call ??? */ | |
168d5872 | 2302 | #ifdef USE_THREADS |
27da23d5 | 2303 | MUTEX_INIT(&PerlIO_mutex); |
96a5add6 AL |
2304 | #else |
2305 | PERL_UNUSED_CONTEXT; | |
93a8090d NIS |
2306 | #endif |
2307 | } | |
2308 | ||
168d5872 NIS |
2309 | void |
2310 | PerlIOUnix_refcnt_inc(int fd) | |
2311 | { | |
27da23d5 | 2312 | dTHX; |
22c96fc1 | 2313 | if (fd >= 0) { |
97aff369 | 2314 | dVAR; |
22c96fc1 | 2315 | |
168d5872 NIS |
2316 | #ifdef USE_THREADS |
2317 | MUTEX_LOCK(&PerlIO_mutex); | |
2318 | #endif | |
22c96fc1 NC |
2319 | if (fd >= PL_perlio_fd_refcnt_size) |
2320 | S_more_refcounted_fds(aTHX_ fd); | |
2321 | ||
27da23d5 JH |
2322 | PL_perlio_fd_refcnt[fd]++; |
2323 | PerlIO_debug("fd %d refcnt=%d\n",fd,PL_perlio_fd_refcnt[fd]); | |
22c96fc1 | 2324 | |
168d5872 NIS |
2325 | #ifdef USE_THREADS |
2326 | MUTEX_UNLOCK(&PerlIO_mutex); | |
2327 | #endif | |
2328 | } | |
2329 | } | |
2330 | ||
168d5872 NIS |
2331 | int |
2332 | PerlIOUnix_refcnt_dec(int fd) | |
2333 | { | |
27da23d5 | 2334 | dTHX; |
168d5872 | 2335 | int cnt = 0; |
22c96fc1 | 2336 | if (fd >= 0) { |
97aff369 | 2337 | dVAR; |
168d5872 NIS |
2338 | #ifdef USE_THREADS |
2339 | MUTEX_LOCK(&PerlIO_mutex); | |
2340 | #endif | |
22c96fc1 NC |
2341 | /* XXX should this be a panic? */ |
2342 | if (fd >= PL_perlio_fd_refcnt_size) | |
2343 | S_more_refcounted_fds(aTHX_ fd); | |
2344 | ||
2345 | /* XXX should this be a panic if it drops below 0? */ | |
27da23d5 | 2346 | cnt = --PL_perlio_fd_refcnt[fd]; |
168d5872 NIS |
2347 | PerlIO_debug("fd %d refcnt=%d\n",fd,cnt); |
2348 | #ifdef USE_THREADS | |
2349 | MUTEX_UNLOCK(&PerlIO_mutex); | |
2350 | #endif | |
2351 | } | |
2352 | return cnt; | |
2353 | } | |
2354 | ||
694c95cf JH |
2355 | void |
2356 | PerlIO_cleanup(pTHX) | |
2357 | { | |
97aff369 | 2358 | dVAR; |
694c95cf JH |
2359 | int i; |
2360 | #ifdef USE_ITHREADS | |
9f4bd222 NIS |
2361 | PerlIO_debug("Cleanup layers for %p\n",aTHX); |
2362 | #else | |
2363 | PerlIO_debug("Cleanup layers\n"); | |
694c95cf JH |
2364 | #endif |
2365 | /* Raise STDIN..STDERR refcount so we don't close them */ | |
2366 | for (i=0; i < 3; i++) | |
2367 | PerlIOUnix_refcnt_inc(i); | |
2368 | PerlIO_cleantable(aTHX_ &PL_perlio); | |
2369 | /* Restore STDIN..STDERR refcount */ | |
2370 | for (i=0; i < 3; i++) | |
2371 | PerlIOUnix_refcnt_dec(i); | |
9f4bd222 NIS |
2372 | |
2373 | if (PL_known_layers) { | |
2374 | PerlIO_list_free(aTHX_ PL_known_layers); | |
2375 | PL_known_layers = NULL; | |
2376 | } | |
27da23d5 | 2377 | if (PL_def_layerlist) { |
9f4bd222 NIS |
2378 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2379 | PL_def_layerlist = NULL; | |
2380 | } | |
694c95cf JH |
2381 | } |
2382 | ||
2383 | ||
2384 | ||
9e353e3b | 2385 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2386 | /* |
71200d45 | 2387 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2388 | */ |
9e353e3b | 2389 | |
14a5cf38 | 2390 | typedef struct { |
22569500 NIS |
2391 | struct _PerlIO base; /* The generic part */ |
2392 | int fd; /* UNIX like file descriptor */ | |
2393 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2394 | } PerlIOUnix; |
2395 | ||
6f9d8c32 | 2396 | int |
9e353e3b | 2397 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2398 | { |
14a5cf38 | 2399 | int oflags = -1; |
3b6c1aba | 2400 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2401 | mode++; |
2402 | switch (*mode) { | |
2403 | case 'r': | |
2404 | oflags = O_RDONLY; | |
2405 | if (*++mode == '+') { | |
2406 | oflags = O_RDWR; | |
2407 | mode++; | |
2408 | } | |
2409 | break; | |
2410 | ||
2411 | case 'w': | |
2412 | oflags = O_CREAT | O_TRUNC; | |
2413 | if (*++mode == '+') { | |
2414 | oflags |= O_RDWR; | |
2415 | mode++; | |
2416 | } | |
2417 | else | |
2418 | oflags |= O_WRONLY; | |
2419 | break; | |
2420 | ||
2421 | case 'a': | |
2422 | oflags = O_CREAT | O_APPEND; | |
2423 | if (*++mode == '+') { | |
2424 | oflags |= O_RDWR; | |
2425 | mode++; | |
2426 | } | |
2427 | else | |
2428 | oflags |= O_WRONLY; | |
2429 | break; | |
2430 | } | |
2431 | if (*mode == 'b') { | |
2432 | oflags |= O_BINARY; | |
2433 | oflags &= ~O_TEXT; | |
2434 | mode++; | |
2435 | } | |
2436 | else if (*mode == 't') { | |
2437 | oflags |= O_TEXT; | |
2438 | oflags &= ~O_BINARY; | |
2439 | mode++; | |
2440 | } | |
2441 | /* | |
71200d45 | 2442 | * Always open in binary mode |
14a5cf38 JH |
2443 | */ |
2444 | oflags |= O_BINARY; | |
2445 | if (*mode || oflags == -1) { | |
93189314 | 2446 | SETERRNO(EINVAL, LIB_INVARG); |
14a5cf38 JH |
2447 | oflags = -1; |
2448 | } | |
2449 | return oflags; | |
9e353e3b NIS |
2450 | } |
2451 | ||
2452 | IV | |
f62ce20a | 2453 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2454 | { |
96a5add6 | 2455 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2456 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2457 | } |
2458 | ||
aa063c35 NIS |
2459 | static void |
2460 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2461 | { |
de009b76 | 2462 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2463 | #if defined(WIN32) |
aa063c35 NIS |
2464 | Stat_t st; |
2465 | if (PerlLIO_fstat(fd, &st) == 0) { | |
6caa5a9c | 2466 | if (!S_ISREG(st.st_mode)) { |
aa063c35 | 2467 | PerlIO_debug("%d is not regular file\n",fd); |
6caa5a9c NIS |
2468 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; |
2469 | } | |
aa063c35 NIS |
2470 | else { |
2471 | PerlIO_debug("%d _is_ a regular file\n",fd); | |
2472 | } | |
6caa5a9c NIS |
2473 | } |
2474 | #endif | |
aa063c35 NIS |
2475 | s->fd = fd; |
2476 | s->oflags = imode; | |
2477 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2478 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2479 | } |
2480 | ||
2481 | IV | |
2482 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2483 | { | |
2484 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2485 | if (*PerlIONext(f)) { |
4b069b44 | 2486 | /* We never call down so do any pending stuff now */ |
03c0554d | 2487 | PerlIO_flush(PerlIONext(f)); |
14a5cf38 | 2488 | /* |
71200d45 | 2489 | * XXX could (or should) we retrieve the oflags from the open file |
14a5cf38 | 2490 | * handle rather than believing the "mode" we are passed in? XXX |
71200d45 | 2491 | * Should the value on NULL mode be 0 or -1? |
14a5cf38 | 2492 | */ |
acbd16bf | 2493 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2494 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2495 | } |
2496 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2497 | |
14a5cf38 | 2498 | return code; |
4b803d04 NIS |
2499 | } |
2500 | ||
c2fcde81 JH |
2501 | IV |
2502 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2503 | { | |
de009b76 | 2504 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2505 | Off_t new_loc; |
96a5add6 | 2506 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2507 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2508 | #ifdef ESPIPE | |
2509 | SETERRNO(ESPIPE, LIB_INVARG); | |
2510 | #else | |
2511 | SETERRNO(EINVAL, LIB_INVARG); | |
2512 | #endif | |
2513 | return -1; | |
2514 | } | |
0723351e NC |
2515 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2516 | if (new_loc == (Off_t) - 1) | |
dcda55fc | 2517 | return -1; |
c2fcde81 JH |
2518 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2519 | return 0; | |
2520 | } | |
2521 | ||
9e353e3b | 2522 | PerlIO * |
14a5cf38 JH |
2523 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2524 | IV n, const char *mode, int fd, int imode, | |
2525 | int perm, PerlIO *f, int narg, SV **args) | |
2526 | { | |
d9dac8cd | 2527 | if (PerlIOValid(f)) { |
14a5cf38 | 2528 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
f62ce20a | 2529 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); |
14a5cf38 JH |
2530 | } |
2531 | if (narg > 0) { | |
3b6c1aba | 2532 | if (*mode == IoTYPE_NUMERIC) |
14a5cf38 JH |
2533 | mode++; |
2534 | else { | |
2535 | imode = PerlIOUnix_oflags(mode); | |
2536 | perm = 0666; | |
2537 | } | |
2538 | if (imode != -1) { | |
e62f0680 | 2539 | const char *path = SvPV_nolen_const(*args); |
14a5cf38 JH |
2540 | fd = PerlLIO_open3(path, imode, perm); |
2541 | } | |
2542 | } | |
2543 | if (fd >= 0) { | |
3b6c1aba | 2544 | if (*mode == IoTYPE_IMPLICIT) |
14a5cf38 JH |
2545 | mode++; |
2546 | if (!f) { | |
2547 | f = PerlIO_allocate(aTHX); | |
d9dac8cd NIS |
2548 | } |
2549 | if (!PerlIOValid(f)) { | |
a33cf58c NIS |
2550 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
2551 | return NULL; | |
2552 | } | |
d9dac8cd | 2553 | } |
aa063c35 | 2554 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
14a5cf38 | 2555 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
c2fcde81 JH |
2556 | if (*mode == IoTYPE_APPEND) |
2557 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
14a5cf38 JH |
2558 | return f; |
2559 | } | |
2560 | else { | |
2561 | if (f) { | |
bb263b4e | 2562 | /*EMPTY*/; |
14a5cf38 | 2563 | /* |
71200d45 | 2564 | * FIXME: pop layers ??? |
14a5cf38 JH |
2565 | */ |
2566 | } | |
2567 | return NULL; | |
2568 | } | |
9e353e3b NIS |
2569 | } |
2570 | ||
71200d45 | 2571 | PerlIO * |
ecdeb87c | 2572 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2573 | { |
dcda55fc | 2574 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2575 | int fd = os->fd; |
ecdeb87c NIS |
2576 | if (flags & PERLIO_DUP_FD) { |
2577 | fd = PerlLIO_dup(fd); | |
2578 | } | |
22c96fc1 | 2579 | if (fd >= 0) { |
ecdeb87c | 2580 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
2581 | if (f) { |
2582 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
aa063c35 | 2583 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); |
71200d45 NIS |
2584 | return f; |
2585 | } | |
71200d45 NIS |
2586 | } |
2587 | return NULL; | |
2588 | } | |
2589 | ||
2590 | ||
9e353e3b | 2591 | SSize_t |
f62ce20a | 2592 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2593 | { |
97aff369 | 2594 | dVAR; |
de009b76 | 2595 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2596 | #ifdef PERLIO_STD_SPECIAL |
2597 | if (fd == 0) | |
2598 | return PERLIO_STD_IN(fd, vbuf, count); | |
2599 | #endif | |
81428673 | 2600 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2601 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
263df5f1 | 2602 | return 0; |
1fd8f4ce | 2603 | } |
14a5cf38 | 2604 | while (1) { |
b464bac0 | 2605 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
14a5cf38 | 2606 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2607 | if (len < 0) { |
2608 | if (errno != EAGAIN) { | |
2609 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2610 | } | |
2611 | } | |
2612 | else if (len == 0 && count != 0) { | |
14a5cf38 | 2613 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
ba85f2ea NIS |
2614 | SETERRNO(0,0); |
2615 | } | |
14a5cf38 JH |
2616 | return len; |
2617 | } | |
2618 | PERL_ASYNC_CHECK(); | |
2619 | } | |
b464bac0 | 2620 | /*NOTREACHED*/ |
9e353e3b NIS |
2621 | } |
2622 | ||
2623 | SSize_t | |
f62ce20a | 2624 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2625 | { |
97aff369 | 2626 | dVAR; |
de009b76 | 2627 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
27da23d5 JH |
2628 | #ifdef PERLIO_STD_SPECIAL |
2629 | if (fd == 1 || fd == 2) | |
2630 | return PERLIO_STD_OUT(fd, vbuf, count); | |
2631 | #endif | |
14a5cf38 | 2632 | while (1) { |
de009b76 | 2633 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
14a5cf38 | 2634 | if (len >= 0 || errno != EINTR) { |
ba85f2ea NIS |
2635 | if (len < 0) { |
2636 | if (errno != EAGAIN) { | |
2637 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2638 | } | |
2639 | } | |
14a5cf38 JH |
2640 | return len; |
2641 | } | |
2642 | PERL_ASYNC_CHECK(); | |
06da4f11 | 2643 | } |
1b6737cc | 2644 | /*NOTREACHED*/ |
9e353e3b NIS |
2645 | } |
2646 | ||
9e353e3b | 2647 | Off_t |
f62ce20a | 2648 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2649 | { |
96a5add6 AL |
2650 | PERL_UNUSED_CONTEXT; |
2651 | ||
14a5cf38 | 2652 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2653 | } |
2654 | ||
71200d45 | 2655 | |
9e353e3b | 2656 | IV |
f62ce20a | 2657 | PerlIOUnix_close(pTHX_ PerlIO *f) |
9e353e3b | 2658 | { |
97aff369 | 2659 | dVAR; |
de009b76 | 2660 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2661 | int code = 0; |
168d5872 NIS |
2662 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
2663 | if (PerlIOUnix_refcnt_dec(fd) > 0) { | |
93a8090d NIS |
2664 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
2665 | return 0; | |
22569500 | 2666 | } |
93a8090d NIS |
2667 | } |
2668 | else { | |
93189314 | 2669 | SETERRNO(EBADF,SS_IVCHAN); |
93a8090d NIS |
2670 | return -1; |
2671 | } | |
14a5cf38 JH |
2672 | while (PerlLIO_close(fd) != 0) { |
2673 | if (errno != EINTR) { | |
2674 | code = -1; | |
2675 | break; | |
2676 | } | |
2677 | PERL_ASYNC_CHECK(); | |
2678 | } | |
2679 | if (code == 0) { | |
2680 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2681 | } | |
2682 | return code; | |
9e353e3b NIS |
2683 | } |
2684 | ||
27da23d5 | 2685 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2686 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2687 | "unix", |
2688 | sizeof(PerlIOUnix), | |
2689 | PERLIO_K_RAW, | |
2690 | PerlIOUnix_pushed, | |
44798d05 | 2691 | PerlIOBase_popped, |
14a5cf38 | 2692 | PerlIOUnix_open, |
86e05cf2 | 2693 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2694 | NULL, |
2695 | PerlIOUnix_fileno, | |
71200d45 | 2696 | PerlIOUnix_dup, |
14a5cf38 JH |
2697 | PerlIOUnix_read, |
2698 | PerlIOBase_unread, | |
2699 | PerlIOUnix_write, | |
2700 | PerlIOUnix_seek, | |
2701 | PerlIOUnix_tell, | |
2702 | PerlIOUnix_close, | |
22569500 NIS |
2703 | PerlIOBase_noop_ok, /* flush */ |
2704 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2705 | PerlIOBase_eof, |
2706 | PerlIOBase_error, | |
2707 | PerlIOBase_clearerr, | |
2708 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2709 | NULL, /* get_base */ |
2710 | NULL, /* get_bufsiz */ | |
2711 | NULL, /* get_ptr */ | |
2712 | NULL, /* get_cnt */ | |
2713 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2714 | }; |
2715 | ||
2716 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2717 | /* |
71200d45 | 2718 | * stdio as a layer |
14a5cf38 | 2719 | */ |
9e353e3b | 2720 | |
313e59c8 NIS |
2721 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2722 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2723 | broken by the last second glibc 2.3 fix | |
2724 | */ | |
2725 | #define STDIO_BUFFER_WRITABLE | |
2726 | #endif | |
2727 | ||
2728 | ||
14a5cf38 JH |
2729 | typedef struct { |
2730 | struct _PerlIO base; | |
22569500 | 2731 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2732 | } PerlIOStdio; |
2733 | ||
2734 | IV | |
f62ce20a | 2735 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2736 | { |
96a5add6 AL |
2737 | PERL_UNUSED_CONTEXT; |
2738 | ||
c4420975 AL |
2739 | if (PerlIOValid(f)) { |
2740 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; | |
2741 | if (s) | |
2742 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2743 | } |
2744 | errno = EBADF; | |
2745 | return -1; | |
9e353e3b NIS |
2746 | } |
2747 | ||
766a733e | 2748 | char * |
14a5cf38 JH |
2749 | PerlIOStdio_mode(const char *mode, char *tmode) |
2750 | { | |
de009b76 | 2751 | char * const ret = tmode; |
a0625d38 SR |
2752 | if (mode) { |
2753 | while (*mode) { | |
2754 | *tmode++ = *mode++; | |
2755 | } | |
14a5cf38 | 2756 | } |
95005ad8 | 2757 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2758 | *tmode++ = 'b'; |
2759 | #endif | |
14a5cf38 JH |
2760 | *tmode = '\0'; |
2761 | return ret; | |
2762 | } | |
2763 | ||
4b803d04 | 2764 | IV |
2dc2558e | 2765 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2766 | { |
1fd8f4ce NIS |
2767 | PerlIO *n; |
2768 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
46c461b5 | 2769 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce NIS |
2770 | if (toptab == tab) { |
2771 | /* Top is already stdio - pop self (duplicate) and use original */ | |
2772 | PerlIO_pop(aTHX_ f); | |
2773 | return 0; | |
2774 | } else { | |
de009b76 | 2775 | const int fd = PerlIO_fileno(n); |
1fd8f4ce NIS |
2776 | char tmode[8]; |
2777 | FILE *stdio; | |
81428673 | 2778 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, |
1fd8f4ce NIS |
2779 | mode = PerlIOStdio_mode(mode, tmode)))) { |
2780 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2781 | /* We never call down so do any pending stuff now */ | |
2782 | PerlIO_flush(PerlIONext(f)); | |
81428673 | 2783 | } |
1fd8f4ce NIS |
2784 | else { |
2785 | return -1; | |
2786 | } | |
2787 | } | |
14a5cf38 | 2788 | } |
2dc2558e | 2789 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2790 | } |
2791 | ||
22569500 | 2792 | |
9e353e3b | 2793 | PerlIO * |
4b069b44 | 2794 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2795 | { |
14a5cf38 JH |
2796 | dTHX; |
2797 | PerlIO *f = NULL; | |
2798 | if (stdio) { | |
22569500 | 2799 | PerlIOStdio *s; |
4b069b44 NIS |
2800 | if (!mode || !*mode) { |
2801 | /* We need to probe to see how we can open the stream | |
2802 | so start with read/write and then try write and read | |
2803 | we dup() so that we can fclose without loosing the fd. | |
2804 | ||
2805 | Note that the errno value set by a failing fdopen | |
2806 | varies between stdio implementations. | |
2807 | */ | |
de009b76 | 2808 | const int fd = PerlLIO_dup(fileno(stdio)); |
a33cf58c | 2809 | FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
4b069b44 | 2810 | if (!f2) { |
a33cf58c | 2811 | f2 = PerlSIO_fdopen(fd, (mode = "w")); |
4b069b44 NIS |
2812 | } |
2813 | if (!f2) { | |
a33cf58c | 2814 | f2 = PerlSIO_fdopen(fd, (mode = "r")); |
4b069b44 NIS |
2815 | } |
2816 | if (!f2) { | |
2817 | /* Don't seem to be able to open */ | |
2818 | PerlLIO_close(fd); | |
2819 | return f; | |
2820 | } | |
2821 | fclose(f2); | |
22569500 | 2822 | } |
a0714e2c | 2823 | if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { |
a33cf58c NIS |
2824 | s = PerlIOSelf(f, PerlIOStdio); |
2825 | s->stdio = stdio; | |
2826 | } | |
14a5cf38 JH |
2827 | } |
2828 | return f; | |
9e353e3b NIS |
2829 | } |
2830 | ||
2831 | PerlIO * | |
14a5cf38 JH |
2832 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
2833 | IV n, const char *mode, int fd, int imode, | |
2834 | int perm, PerlIO *f, int narg, SV **args) | |
2835 | { | |
2836 | char tmode[8]; | |
d9dac8cd | 2837 | if (PerlIOValid(f)) { |
dcda55fc AL |
2838 | const char * const path = SvPV_nolen_const(*args); |
2839 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
1751d015 NIS |
2840 | FILE *stdio; |
2841 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); | |
2842 | stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), | |
14a5cf38 JH |
2843 | s->stdio); |
2844 | if (!s->stdio) | |
2845 | return NULL; | |
2846 | s->stdio = stdio; | |
1751d015 | 2847 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); |
14a5cf38 JH |
2848 | return f; |
2849 | } | |
2850 | else { | |
2851 | if (narg > 0) { | |
dcda55fc | 2852 | const char * const path = SvPV_nolen_const(*args); |
3b6c1aba | 2853 | if (*mode == IoTYPE_NUMERIC) { |
14a5cf38 JH |
2854 | mode++; |
2855 | fd = PerlLIO_open3(path, imode, perm); | |
2856 | } | |
2857 | else { | |
95005ad8 GH |
2858 | FILE *stdio; |
2859 | bool appended = FALSE; | |
2860 | #ifdef __CYGWIN__ | |
2861 | /* Cygwin wants its 'b' early. */ | |
2862 | appended = TRUE; | |
2863 | mode = PerlIOStdio_mode(mode, tmode); | |
2864 | #endif | |
2865 | stdio = PerlSIO_fopen(path, mode); | |
6f0313ac JH |
2866 | if (stdio) { |
2867 | PerlIOStdio *s; | |
2868 | if (!f) { | |
2869 | f = PerlIO_allocate(aTHX); | |
2870 | } | |
95005ad8 GH |
2871 | if (!appended) |
2872 | mode = PerlIOStdio_mode(mode, tmode); | |
2873 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
2874 | if (f) { | |
6f0313ac JH |
2875 | s = PerlIOSelf(f, PerlIOStdio); |
2876 | s->stdio = stdio; | |
2877 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); | |
2878 | } | |
2879 | return f; | |
2880 | } | |
2881 | else { | |
2882 | return NULL; | |
2883 | } | |
14a5cf38 JH |
2884 | } |
2885 | } | |
2886 | if (fd >= 0) { | |
2887 | FILE *stdio = NULL; | |
2888 | int init = 0; | |
3b6c1aba | 2889 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
2890 | init = 1; |
2891 | mode++; | |
2892 | } | |
2893 | if (init) { | |
2894 | switch (fd) { | |
2895 | case 0: | |
2896 | stdio = PerlSIO_stdin; | |
2897 | break; | |
2898 | case 1: | |
2899 | stdio = PerlSIO_stdout; | |
2900 | break; | |
2901 | case 2: | |
2902 | stdio = PerlSIO_stderr; | |
2903 | break; | |
2904 | } | |
2905 | } | |
2906 | else { | |
2907 | stdio = PerlSIO_fdopen(fd, mode = | |
2908 | PerlIOStdio_mode(mode, tmode)); | |
2909 | } | |
2910 | if (stdio) { | |
d9dac8cd NIS |
2911 | if (!f) { |
2912 | f = PerlIO_allocate(aTHX); | |
2913 | } | |
a33cf58c | 2914 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { |
dcda55fc | 2915 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
a33cf58c NIS |
2916 | s->stdio = stdio; |
2917 | PerlIOUnix_refcnt_inc(fileno(s->stdio)); | |
2918 | } | |
14a5cf38 JH |
2919 | return f; |
2920 | } | |
2921 | } | |
2922 | } | |
ee518936 | 2923 | return NULL; |
9e353e3b NIS |
2924 | } |
2925 | ||
1751d015 | 2926 | PerlIO * |
ecdeb87c | 2927 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
2928 | { |
2929 | /* This assumes no layers underneath - which is what | |
2930 | happens, but is not how I remember it. NI-S 2001/10/16 | |
2931 | */ | |
ecdeb87c | 2932 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
694c95cf | 2933 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
de009b76 | 2934 | const int fd = fileno(stdio); |
9217ff3f | 2935 | char mode[8]; |
ecdeb87c | 2936 | if (flags & PERLIO_DUP_FD) { |
de009b76 | 2937 | const int dfd = PerlLIO_dup(fileno(stdio)); |
9217ff3f NIS |
2938 | if (dfd >= 0) { |
2939 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
2940 | goto set_this; | |
ecdeb87c NIS |
2941 | } |
2942 | else { | |
bb263b4e | 2943 | /*EMPTY*/; |
ecdeb87c NIS |
2944 | /* FIXME: To avoid messy error recovery if dup fails |
2945 | re-use the existing stdio as though flag was not set | |
2946 | */ | |
2947 | } | |
2948 | } | |
9217ff3f NIS |
2949 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); |
2950 | set_this: | |
694c95cf JH |
2951 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
2952 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
1751d015 NIS |
2953 | } |
2954 | return f; | |
2955 | } | |
2956 | ||
0d7a5398 NIS |
2957 | static int |
2958 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
2959 | { | |
96a5add6 AL |
2960 | PERL_UNUSED_CONTEXT; |
2961 | ||
0d7a5398 | 2962 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 2963 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 2964 | */ |
ef8eacb8 AT |
2965 | # if defined(__UCLIBC__) |
2966 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ | |
2967 | f->__filedes = -1; | |
2968 | return 1; | |
2969 | # elif defined(__GLIBC__) | |
0d7a5398 | 2970 | /* There may be a better way for GLIBC: |
37725cdc | 2971 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
2972 | */ |
2973 | f->_fileno = -1; | |
2974 | return 1; | |
2975 | # elif defined(__sun__) | |
cfedb851 | 2976 | return 0; |
0d7a5398 NIS |
2977 | # elif defined(__hpux) |
2978 | f->__fileH = 0xff; | |
2979 | f->__fileL = 0xff; | |
2980 | return 1; | |
9837d373 | 2981 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 2982 | your platform does not have special entry try this one. |
9837d373 NIS |
2983 | [For OSF only have confirmation for Tru64 (alpha) |
2984 | but assume other OSFs will be similar.] | |
37725cdc | 2985 | */ |
9837d373 | 2986 | # elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
2987 | f->_file = -1; |
2988 | return 1; | |
2989 | # elif defined(__FreeBSD__) | |
2990 | /* There may be a better way on FreeBSD: | |
37725cdc NIS |
2991 | - we could insert a dummy func in the _close function entry |
2992 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
2993 | */ |
2994 | f->_file = -1; | |
0c49ea6a SU |
2995 | return 1; |
2996 | # elif defined(__OpenBSD__) | |
2997 | /* There may be a better way on OpenBSD: | |
2998 | - we could insert a dummy func in the _close function entry | |
2999 | f->_close = (int (*)(void *)) dummy_close; | |
3000 | */ | |
3001 | f->_file = -1; | |
0d7a5398 | 3002 | return 1; |
59ad941d IZ |
3003 | # elif defined(__EMX__) |
3004 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ | |
3005 | f->_handle = -1; | |
3006 | return 1; | |
0d7a5398 NIS |
3007 | # elif defined(__CYGWIN__) |
3008 | /* There may be a better way on CYGWIN: | |
37725cdc NIS |
3009 | - we could insert a dummy func in the _close function entry |
3010 | f->_close = (int (*)(void *)) dummy_close; | |
0d7a5398 NIS |
3011 | */ |
3012 | f->_file = -1; | |
3013 | return 1; | |
3014 | # elif defined(WIN32) | |
3015 | # if defined(__BORLANDC__) | |
3016 | f->fd = PerlLIO_dup(fileno(f)); | |
b475b3e6 JH |
3017 | # elif defined(UNDER_CE) |
3018 | /* WIN_CE does not have access to FILE internals, it hardly has FILE | |
3019 | structure at all | |
3020 | */ | |
0d7a5398 NIS |
3021 | # else |
3022 | f->_file = -1; | |
3023 | # endif | |
3024 | return 1; | |
3025 | # else | |
3026 | #if 0 | |
37725cdc | 3027 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3028 | (which isn't thread safe) instead |
37725cdc | 3029 | */ |
0d7a5398 NIS |
3030 | # error "Don't know how to set FILE.fileno on your platform" |
3031 | #endif | |
8772537c | 3032 | PERL_UNUSED_ARG(f); |
0d7a5398 NIS |
3033 | return 0; |
3034 | # endif | |
3035 | } | |
3036 | ||
1751d015 | 3037 | IV |
f62ce20a | 3038 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3039 | { |
c4420975 | 3040 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 NIS |
3041 | if (!stdio) { |
3042 | errno = EBADF; | |
3043 | return -1; | |
3044 | } | |
9217ff3f | 3045 | else { |
de009b76 | 3046 | const int fd = fileno(stdio); |
0d7a5398 | 3047 | int invalidate = 0; |
bbfd922f | 3048 | IV result = 0; |
0d7a5398 NIS |
3049 | int saveerr = 0; |
3050 | int dupfd = 0; | |
3051 | #ifdef SOCKS5_VERSION_NAME | |
37725cdc NIS |
3052 | /* Socks lib overrides close() but stdio isn't linked to |
3053 | that library (though we are) - so we must call close() | |
3054 | on sockets on stdio's behalf. | |
3055 | */ | |
0d7a5398 NIS |
3056 | int optval; |
3057 | Sock_size_t optlen = sizeof(int); | |
6b4ce6c8 | 3058 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) |
37725cdc | 3059 | invalidate = 1; |
0d7a5398 | 3060 | #endif |
6b4ce6c8 | 3061 | if (PerlIOUnix_refcnt_dec(fd) > 0) /* File descriptor still in use */ |
0d7a5398 | 3062 | invalidate = 1; |
0d7a5398 | 3063 | if (invalidate) { |
6b4ce6c8 AL |
3064 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ |
3065 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3066 | return 0; | |
3067 | if (stdio == stdout || stdio == stderr) | |
3068 | return PerlIO_flush(f); | |
37725cdc NIS |
3069 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
3070 | Use Sarathy's trick from maint-5.6 to invalidate the | |
3071 | fileno slot of the FILE * | |
3072 | */ | |
bbfd922f | 3073 | result = PerlIO_flush(f); |
0d7a5398 | 3074 | saveerr = errno; |
6b4ce6c8 AL |
3075 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); |
3076 | if (!invalidate) | |
3077 | dupfd = PerlLIO_dup(fd); | |
37725cdc | 3078 | } |
0d7a5398 | 3079 | result = PerlSIO_fclose(stdio); |
37725cdc NIS |
3080 | /* We treat error from stdio as success if we invalidated |
3081 | errno may NOT be expected EBADF | |
e8529473 NIS |
3082 | */ |
3083 | if (invalidate && result != 0) { | |
0d7a5398 NIS |
3084 | errno = saveerr; |
3085 | result = 0; | |
37725cdc | 3086 | } |
6b4ce6c8 AL |
3087 | #ifdef SOCKS5_VERSION_NAME |
3088 | /* in SOCKS' case, let close() determine return value */ | |
3089 | result = close(fd); | |
3090 | #endif | |
0d7a5398 NIS |
3091 | if (dupfd) { |
3092 | PerlLIO_dup2(dupfd,fd); | |
8a521f28 | 3093 | PerlLIO_close(dupfd); |
9217ff3f NIS |
3094 | } |
3095 | return result; | |
37725cdc | 3096 | } |
1751d015 NIS |
3097 | } |
3098 | ||
9e353e3b | 3099 | SSize_t |
f62ce20a | 3100 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3101 | { |
97aff369 | 3102 | dVAR; |
c4420975 | 3103 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3104 | SSize_t got = 0; |
4d948241 NIS |
3105 | for (;;) { |
3106 | if (count == 1) { | |
3107 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3108 | /* | |
3109 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3110 | * stdio does not do that for fread() | |
3111 | */ | |
de009b76 | 3112 | const int ch = PerlSIO_fgetc(s); |
4d948241 NIS |
3113 | if (ch != EOF) { |
3114 | *buf = ch; | |
3115 | got = 1; | |
3116 | } | |
14a5cf38 | 3117 | } |
4d948241 NIS |
3118 | else |
3119 | got = PerlSIO_fread(vbuf, 1, count, s); | |
b1d8b47a CS |
3120 | if (got == 0 && PerlSIO_ferror(s)) |
3121 | got = -1; | |
42a7a32f | 3122 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3123 | break; |
3124 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3125 | SETERRNO(0,0); /* just in case */ |
14a5cf38 | 3126 | } |
14a5cf38 | 3127 | return got; |
9e353e3b NIS |
3128 | } |
3129 | ||
3130 | SSize_t | |
f62ce20a | 3131 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3132 | { |
14a5cf38 | 3133 | SSize_t unread = 0; |
c4420975 | 3134 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3135 | |
313e59c8 | 3136 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3137 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3138 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3139 | STDCHAR *base = PerlIO_get_base(f); | |
3140 | SSize_t cnt = PerlIO_get_cnt(f); | |
3141 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3142 | SSize_t avail = ptr - base; | |
3143 | if (avail > 0) { | |
3144 | if (avail > count) { | |
3145 | avail = count; | |
3146 | } | |
3147 | ptr -= avail; | |
3148 | Move(buf-avail,ptr,avail,STDCHAR); | |
3149 | count -= avail; | |
3150 | unread += avail; | |
3151 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
9f7cd136 NIS |
3152 | if (PerlSIO_feof(s) && unread >= 0) |
3153 | PerlSIO_clearerr(s); | |
3154 | } | |
3155 | } | |
313e59c8 NIS |
3156 | else |
3157 | #endif | |
3158 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3159 | /* We can get pointer to buffer but not its base |
3160 | Do ungetc() but check chars are ending up in the | |
3161 | buffer | |
3162 | */ | |
3163 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3164 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3165 | while (count > 0) { | |
de009b76 | 3166 | const int ch = *--buf & 0xFF; |
9f7cd136 NIS |
3167 | if (ungetc(ch,s) != ch) { |
3168 | /* ungetc did not work */ | |
3169 | break; | |
3170 | } | |
3171 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { | |
3172 | /* Did not change pointer as expected */ | |
3173 | fgetc(s); /* get char back again */ | |
3174 | break; | |
3175 | } | |
3176 | /* It worked ! */ | |
3177 | count--; | |
3178 | unread++; | |
93679785 NIS |
3179 | } |
3180 | } | |
3181 | ||
3182 | if (count > 0) { | |
3183 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
3184 | } |
3185 | return unread; | |
9e353e3b NIS |
3186 | } |
3187 | ||
3188 | SSize_t | |
f62ce20a | 3189 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3190 | { |
97aff369 | 3191 | dVAR; |
4d948241 NIS |
3192 | SSize_t got; |
3193 | for (;;) { | |
3194 | got = PerlSIO_fwrite(vbuf, 1, count, | |
3195 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
42a7a32f | 3196 | if (got >= 0 || errno != EINTR) |
4d948241 NIS |
3197 | break; |
3198 | PERL_ASYNC_CHECK(); | |
42a7a32f | 3199 | SETERRNO(0,0); /* just in case */ |
4d948241 NIS |
3200 | } |
3201 | return got; | |
9e353e3b NIS |
3202 | } |
3203 | ||
94a175e1 | 3204 | IV |
f62ce20a | 3205 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3206 | { |
c4420975 | 3207 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3208 | PERL_UNUSED_CONTEXT; |
3209 | ||
94a175e1 | 3210 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3211 | } |
3212 | ||
3213 | Off_t | |
f62ce20a | 3214 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3215 | { |
c4420975 | 3216 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3217 | PERL_UNUSED_CONTEXT; |
3218 | ||
94a175e1 | 3219 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3220 | } |
3221 | ||
3222 | IV | |
f62ce20a | 3223 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3224 | { |
c4420975 | 3225 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3226 | PERL_UNUSED_CONTEXT; |
3227 | ||
14a5cf38 JH |
3228 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
3229 | return PerlSIO_fflush(stdio); | |
3230 | } | |
3231 | else { | |
bb263b4e | 3232 | /*EMPTY*/; |
88b61e10 | 3233 | #if 0 |
14a5cf38 JH |
3234 | /* |
3235 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
71200d45 | 3236 | * right if this is just a "sync" from a layer above Suspect right |
14a5cf38 | 3237 | * design is to do _this_ but not have layer above flush this |
71200d45 | 3238 | * layer read-to-read |
14a5cf38 JH |
3239 | */ |
3240 | /* | |
71200d45 | 3241 | * Not writeable - sync by attempting a seek |
14a5cf38 | 3242 | */ |
79852593 | 3243 | const int err = errno; |
14a5cf38 JH |
3244 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) |
3245 | errno = err; | |
88b61e10 | 3246 | #endif |
14a5cf38 JH |
3247 | } |
3248 | return 0; | |
9e353e3b NIS |
3249 | } |
3250 | ||
3251 | IV | |
f62ce20a | 3252 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3253 | { |
96a5add6 AL |
3254 | PERL_UNUSED_CONTEXT; |
3255 | ||
14a5cf38 | 3256 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3257 | } |
3258 | ||
3259 | IV | |
f62ce20a | 3260 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3261 | { |
96a5add6 AL |
3262 | PERL_UNUSED_CONTEXT; |
3263 | ||
263df5f1 | 3264 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3265 | } |
3266 | ||
3267 | void | |
f62ce20a | 3268 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3269 | { |
96a5add6 AL |
3270 | PERL_UNUSED_CONTEXT; |
3271 | ||
14a5cf38 | 3272 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3273 | } |
3274 | ||
3275 | void | |
f62ce20a | 3276 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3277 | { |
96a5add6 AL |
3278 | PERL_UNUSED_CONTEXT; |
3279 | ||
9e353e3b | 3280 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3281 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3282 | #else |
bd61b366 | 3283 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3284 | #endif |
3285 | } | |
3286 | ||
3287 | #ifdef FILE_base | |
3288 | STDCHAR * | |
f62ce20a | 3289 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3290 | { |
c4420975 | 3291 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3292 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3293 | } |
3294 | ||
3295 | Size_t | |
f62ce20a | 3296 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3297 | { |
c4420975 | 3298 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3299 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3300 | } |
3301 | #endif | |
3302 | ||
3303 | #ifdef USE_STDIO_PTR | |
3304 | STDCHAR * | |
f62ce20a | 3305 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3306 | { |
c4420975 | 3307 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
cc00df79 | 3308 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3309 | } |
3310 | ||
3311 | SSize_t | |
f62ce20a | 3312 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3313 | { |
c4420975 | 3314 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3315 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3316 | } |
3317 | ||
3318 | void | |
f62ce20a | 3319 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3320 | { |
c4420975 | 3321 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
14a5cf38 | 3322 | if (ptr != NULL) { |
9e353e3b | 3323 | #ifdef STDIO_PTR_LVALUE |
22569500 | 3324 | PerlSIO_set_ptr(stdio, (void*)ptr); /* LHS STDCHAR* cast non-portable */ |
9e353e3b | 3325 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
14a5cf38 | 3326 | if (PerlSIO_get_cnt(stdio) != (cnt)) { |
14a5cf38 JH |
3327 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
3328 | } | |
9e353e3b NIS |
3329 | #endif |
3330 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
14a5cf38 | 3331 | /* |
71200d45 | 3332 | * Setting ptr _does_ change cnt - we are done |
14a5cf38 JH |
3333 | */ |
3334 | return; | |
9e353e3b | 3335 | #endif |
22569500 | 3336 | #else /* STDIO_PTR_LVALUE */ |
14a5cf38 | 3337 | PerlProc_abort(); |
22569500 | 3338 | #endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3339 | } |
3340 | /* | |
71200d45 | 3341 | * Now (or only) set cnt |
14a5cf38 | 3342 | */ |
9e353e3b | 3343 | #ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3344 | PerlSIO_set_cnt(stdio, cnt); |
22569500 | 3345 | #else /* STDIO_CNT_LVALUE */ |
9e353e3b | 3346 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 JH |
3347 | PerlSIO_set_ptr(stdio, |
3348 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - | |
3349 | cnt)); | |
22569500 | 3350 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3351 | PerlProc_abort(); |
22569500 NIS |
3352 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
3353 | #endif /* STDIO_CNT_LVALUE */ | |
9e353e3b NIS |
3354 | } |
3355 | ||
93679785 | 3356 | |
9e353e3b NIS |
3357 | #endif |
3358 | ||
93679785 NIS |
3359 | IV |
3360 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3361 | { | |
c4420975 | 3362 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3363 | int c; |
96a5add6 AL |
3364 | PERL_UNUSED_CONTEXT; |
3365 | ||
93679785 NIS |
3366 | /* |
3367 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3368 | */ | |
3369 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
3370 | if (PerlSIO_fflush(stdio) != 0) | |
3371 | return EOF; | |
3372 | } | |
3373 | c = PerlSIO_fgetc(stdio); | |
3374 | if (c == EOF) | |
3375 | return EOF; | |
3376 | ||
3377 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 NIS |
3378 | |
3379 | #ifdef STDIO_BUFFER_WRITABLE | |
9f7cd136 | 3380 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
93679785 NIS |
3381 | /* Fake ungetc() to the real buffer in case system's ungetc |
3382 | goes elsewhere | |
3383 | */ | |
3384 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3385 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3386 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3387 | if (ptr == base+1) { | |
3388 | *--ptr = (STDCHAR) c; | |
3389 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3390 | if (PerlSIO_feof(stdio)) | |
3391 | PerlSIO_clearerr(stdio); | |
3392 | return 0; | |
3393 | } | |
3394 | } | |
313e59c8 NIS |
3395 | else |
3396 | #endif | |
3397 | if (PerlIO_has_cntptr(f)) { | |
9f7cd136 NIS |
3398 | STDCHAR ch = c; |
3399 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3400 | return 0; | |
3401 | } | |
3402 | } | |
93679785 NIS |
3403 | #endif |
3404 | ||
3405 | #if defined(VMS) | |
3406 | /* An ungetc()d char is handled separately from the regular | |
3407 | * buffer, so we stuff it in the buffer ourselves. | |
3408 | * Should never get called as should hit code above | |
3409 | */ | |
bad9695d NIS |
3410 | *(--((*stdio)->_ptr)) = (unsigned char) c; |
3411 | (*stdio)->_cnt++; | |
93679785 NIS |
3412 | #else |
3413 | /* If buffer snoop scheme above fails fall back to | |
9f7cd136 | 3414 | using ungetc(). |
93679785 NIS |
3415 | */ |
3416 | if (PerlSIO_ungetc(c, stdio) != c) | |
3417 | return EOF; | |
3418 | #endif | |
3419 | return 0; | |
3420 | } | |
3421 | ||
3422 | ||
3423 | ||
27da23d5 | 3424 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3425 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3426 | "stdio", |
3427 | sizeof(PerlIOStdio), | |
86e05cf2 | 3428 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3429 | PerlIOStdio_pushed, |
44798d05 | 3430 | PerlIOBase_popped, |
14a5cf38 | 3431 | PerlIOStdio_open, |
86e05cf2 | 3432 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3433 | NULL, |
3434 | PerlIOStdio_fileno, | |
71200d45 | 3435 | PerlIOStdio_dup, |
14a5cf38 JH |
3436 | PerlIOStdio_read, |
3437 | PerlIOStdio_unread, | |
3438 | PerlIOStdio_write, | |
3439 | PerlIOStdio_seek, | |
3440 | PerlIOStdio_tell, | |
3441 | PerlIOStdio_close, | |
3442 | PerlIOStdio_flush, | |
3443 | PerlIOStdio_fill, | |
3444 | PerlIOStdio_eof, | |
3445 | PerlIOStdio_error, | |
3446 | PerlIOStdio_clearerr, | |
3447 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3448 | #ifdef FILE_base |
14a5cf38 JH |
3449 | PerlIOStdio_get_base, |
3450 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3451 | #else |
14a5cf38 JH |
3452 | NULL, |
3453 | NULL, | |
9e353e3b NIS |
3454 | #endif |
3455 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3456 | PerlIOStdio_get_ptr, |
3457 | PerlIOStdio_get_cnt, | |
15b61c98 | 3458 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3459 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3460 | # else |
3461 | NULL, | |
3462 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3463 | #else | |
3464 | NULL, | |
14a5cf38 JH |
3465 | NULL, |
3466 | NULL, | |
15b61c98 | 3467 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3468 | }; |
3469 | ||
b9d6bf13 JH |
3470 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3471 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3472 | FILE * |
81428673 | 3473 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3474 | { |
e87a358a | 3475 | dTHX; |
81428673 NIS |
3476 | FILE *stdio = NULL; |
3477 | if (PerlIOValid(f)) { | |
3478 | char buf[8]; | |
3479 | PerlIO_flush(f); | |
3480 | if (!mode || !*mode) { | |
3481 | mode = PerlIO_modestr(f, buf); | |
3482 | } | |
3483 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3484 | if (stdio) { | |
3485 | PerlIOl *l = *f; | |
9f75cc58 | 3486 | PerlIO *f2; |
81428673 NIS |
3487 | /* De-link any lower layers so new :stdio sticks */ |
3488 | *f = NULL; | |
a0714e2c | 3489 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { |
9f75cc58 | 3490 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); |
81428673 NIS |
3491 | s->stdio = stdio; |
3492 | /* Link previous lower layers under new one */ | |
3493 | *PerlIONext(f) = l; | |
3494 | } | |
3495 | else { | |
3496 | /* restore layers list */ | |
3497 | *f = l; | |
3498 | } | |
a33cf58c | 3499 | } |
14a5cf38 JH |
3500 | } |
3501 | return stdio; | |
9e353e3b NIS |
3502 | } |
3503 | ||
81428673 | 3504 | |
9e353e3b NIS |
3505 | FILE * |
3506 | PerlIO_findFILE(PerlIO *f) | |
3507 | { | |
14a5cf38 JH |
3508 | PerlIOl *l = *f; |
3509 | while (l) { | |
3510 | if (l->tab == &PerlIO_stdio) { | |
3511 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3512 | return s->stdio; | |
3513 | } | |
3514 | l = *PerlIONext(&l); | |
f7e7eb72 | 3515 | } |
4b069b44 | 3516 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bd61b366 | 3517 | return PerlIO_exportFILE(f, NULL); |
9e353e3b NIS |
3518 | } |
3519 | ||
b9d6bf13 | 3520 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3521 | void |
3522 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3523 | { | |
27da23d5 | 3524 | dVAR; |
22569500 NIS |
3525 | PerlIOl *l; |
3526 | while ((l = *p)) { | |
3527 | if (l->tab == &PerlIO_stdio) { | |
3528 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3529 | if (s->stdio == f) { | |
3530 | dTHX; | |
3531 | PerlIO_pop(aTHX_ p); | |
3532 | return; | |
3533 | } | |
3534 | } | |
3535 | p = PerlIONext(p); | |
3536 | } | |
3537 | return; | |
9e353e3b NIS |
3538 | } |
3539 | ||
3540 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3541 | /* |
71200d45 | 3542 | * perlio buffer layer |
14a5cf38 | 3543 | */ |
9e353e3b | 3544 | |
5e2ab84b | 3545 | IV |
2dc2558e | 3546 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3547 | { |
14a5cf38 | 3548 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3549 | const int fd = PerlIO_fileno(f); |
14a5cf38 JH |
3550 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
3551 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; | |
3552 | } | |
4b069b44 | 3553 | if (*PerlIONext(f)) { |
de009b76 | 3554 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
4b069b44 NIS |
3555 | if (posn != (Off_t) - 1) { |
3556 | b->posn = posn; | |
3557 | } | |
14a5cf38 | 3558 | } |
2dc2558e | 3559 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3560 | } |
3561 | ||
9e353e3b | 3562 | PerlIO * |
14a5cf38 JH |
3563 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
3564 | IV n, const char *mode, int fd, int imode, int perm, | |
3565 | PerlIO *f, int narg, SV **args) | |
3566 | { | |
04892f78 | 3567 | if (PerlIOValid(f)) { |
14a5cf38 | 3568 | PerlIO *next = PerlIONext(f); |
67363c0d JH |
3569 | PerlIO_funcs *tab = |
3570 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3571 | if (tab && tab->Open) | |
3572 | next = | |
3573 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3574 | next, narg, args); | |
2dc2558e | 3575 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { |
14a5cf38 JH |
3576 | return NULL; |
3577 | } | |
3578 | } | |
3579 | else { | |
04892f78 | 3580 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
14a5cf38 | 3581 | int init = 0; |
3b6c1aba | 3582 | if (*mode == IoTYPE_IMPLICIT) { |
14a5cf38 JH |
3583 | init = 1; |
3584 | /* | |
71200d45 | 3585 | * mode++; |
14a5cf38 JH |
3586 | */ |
3587 | } | |
67363c0d JH |
3588 | if (tab && tab->Open) |
3589 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3590 | f, narg, args); | |
3591 | else | |
3592 | SETERRNO(EINVAL, LIB_INVARG); | |
14a5cf38 | 3593 | if (f) { |
22569500 | 3594 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { |
b26b1ab5 NC |
3595 | /* |
3596 | * if push fails during open, open fails. close will pop us. | |
3597 | */ | |
3598 | PerlIO_close (f); | |
3599 | return NULL; | |
3600 | } else { | |
3601 | fd = PerlIO_fileno(f); | |
b26b1ab5 NC |
3602 | if (init && fd == 2) { |
3603 | /* | |
3604 | * Initial stderr is unbuffered | |
3605 | */ | |
3606 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3607 | } | |
23b84778 IZ |
3608 | #ifdef PERLIO_USING_CRLF |
3609 | # ifdef PERLIO_IS_BINMODE_FD | |
3610 | if (PERLIO_IS_BINMODE_FD(fd)) | |
bd61b366 | 3611 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); |
23b84778 IZ |
3612 | else |
3613 | # endif | |
3614 | /* | |
3615 | * do something about failing setmode()? --jhi | |
3616 | */ | |
3617 | PerlLIO_setmode(fd, O_BINARY); | |
3618 | #endif | |
14a5cf38 JH |
3619 | } |
3620 | } | |
ee518936 | 3621 | } |
14a5cf38 | 3622 | return f; |
9e353e3b NIS |
3623 | } |
3624 | ||
14a5cf38 JH |
3625 | /* |
3626 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3627 | * read or write state. For write state, we put the postponed data through |
3628 | * the next layers. For read state, we seek() the next layers to the | |
3629 | * offset given by current position in the buffer, and discard the buffer | |
3630 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3631 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3632 | */ |
9e353e3b | 3633 | IV |
f62ce20a | 3634 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3635 | { |
dcda55fc | 3636 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3637 | int code = 0; |
04892f78 | 3638 | PerlIO *n = PerlIONext(f); |
14a5cf38 JH |
3639 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
3640 | /* | |
71200d45 | 3641 | * write() the buffer |
14a5cf38 | 3642 | */ |
de009b76 AL |
3643 | const STDCHAR *buf = b->buf; |
3644 | const STDCHAR *p = buf; | |
14a5cf38 JH |
3645 | while (p < b->ptr) { |
3646 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3647 | if (count > 0) { | |
3648 | p += count; | |
3649 | } | |
3650 | else if (count < 0 || PerlIO_error(n)) { | |
3651 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3652 | code = -1; | |
3653 | break; | |
3654 | } | |
3655 | } | |
3656 | b->posn += (p - buf); | |
3657 | } | |
3658 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3659 | STDCHAR *buf = PerlIO_get_base(f); | |
3660 | /* | |
71200d45 | 3661 | * Note position change |
14a5cf38 JH |
3662 | */ |
3663 | b->posn += (b->ptr - buf); | |
3664 | if (b->ptr < b->end) { | |
4b069b44 NIS |
3665 | /* We did not consume all of it - try and seek downstream to |
3666 | our logical position | |
14a5cf38 | 3667 | */ |
4b069b44 | 3668 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { |
04892f78 NIS |
3669 | /* Reload n as some layers may pop themselves on seek */ |
3670 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
14a5cf38 | 3671 | } |
ba5c3fe9 | 3672 | else { |
4b069b44 NIS |
3673 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read |
3674 | data is lost for good - so return saying "ok" having undone | |
3675 | the position adjust | |
3676 | */ | |
3677 | b->posn -= (b->ptr - buf); | |
ba5c3fe9 NIS |
3678 | return code; |
3679 | } | |
14a5cf38 JH |
3680 | } |
3681 | } | |
3682 | b->ptr = b->end = b->buf; | |
3683 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3684 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3685 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
14a5cf38 JH |
3686 | code = -1; |
3687 | return code; | |
6f9d8c32 NIS |
3688 | } |
3689 | ||
93c2c2ec IZ |
3690 | /* This discards the content of the buffer after b->ptr, and rereads |
3691 | * the buffer from the position off in the layer downstream; here off | |
3692 | * is at offset corresponding to b->ptr - b->buf. | |
3693 | */ | |
06da4f11 | 3694 | IV |
f62ce20a | 3695 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3696 | { |
dcda55fc | 3697 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3698 | PerlIO *n = PerlIONext(f); |
3699 | SSize_t avail; | |
3700 | /* | |
4b069b44 NIS |
3701 | * Down-stream flush is defined not to loose read data so is harmless. |
3702 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 3703 | */ |
93c2c2ec | 3704 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
14a5cf38 JH |
3705 | return -1; |
3706 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) | |
f62ce20a | 3707 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
3708 | |
3709 | if (!b->buf) | |
22569500 | 3710 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 JH |
3711 | |
3712 | b->ptr = b->end = b->buf; | |
4b069b44 NIS |
3713 | |
3714 | if (!PerlIOValid(n)) { | |
3715 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3716 | return -1; | |
3717 | } | |
3718 | ||
14a5cf38 JH |
3719 | if (PerlIO_fast_gets(n)) { |
3720 | /* | |
04892f78 | 3721 | * Layer below is also buffered. We do _NOT_ want to call its |
14a5cf38 JH |
3722 | * ->Read() because that will loop till it gets what we asked for |
3723 | * which may hang on a pipe etc. Instead take anything it has to | |
71200d45 | 3724 | * hand, or ask it to fill _once_. |
14a5cf38 JH |
3725 | */ |
3726 | avail = PerlIO_get_cnt(n); | |
3727 | if (avail <= 0) { | |
3728 | avail = PerlIO_fill(n); | |
3729 | if (avail == 0) | |
3730 | avail = PerlIO_get_cnt(n); | |
3731 | else { | |
3732 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
3733 | avail = 0; | |
3734 | } | |
3735 | } | |
3736 | if (avail > 0) { | |
3737 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
dcda55fc | 3738 | const SSize_t cnt = avail; |
eb160463 | 3739 | if (avail > (SSize_t)b->bufsiz) |
14a5cf38 JH |
3740 | avail = b->bufsiz; |
3741 | Copy(ptr, b->buf, avail, STDCHAR); | |
3742 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
3743 | } | |
3744 | } | |
3745 | else { | |
3746 | avail = PerlIO_read(n, b->ptr, b->bufsiz); | |
3747 | } | |
3748 | if (avail <= 0) { | |
3749 | if (avail == 0) | |
3750 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
3751 | else | |
3752 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3753 | return -1; | |
3754 | } | |
3755 | b->end = b->buf + avail; | |
3756 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3757 | return 0; | |
06da4f11 NIS |
3758 | } |
3759 | ||
6f9d8c32 | 3760 | SSize_t |
f62ce20a | 3761 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 3762 | { |
04892f78 | 3763 | if (PerlIOValid(f)) { |
dcda55fc | 3764 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3765 | if (!b->ptr) |
3766 | PerlIO_get_base(f); | |
f62ce20a | 3767 | return PerlIOBase_read(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3768 | } |
3769 | return 0; | |
6f9d8c32 NIS |
3770 | } |
3771 | ||
9e353e3b | 3772 | SSize_t |
f62ce20a | 3773 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3774 | { |
14a5cf38 | 3775 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 3776 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3777 | SSize_t unread = 0; |
3778 | SSize_t avail; | |
3779 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
3780 | PerlIO_flush(f); | |
3781 | if (!b->buf) | |
3782 | PerlIO_get_base(f); | |
3783 | if (b->buf) { | |
3784 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
3785 | /* | |
3786 | * Buffer is already a read buffer, we can overwrite any chars | |
71200d45 | 3787 | * which have been read back to buffer start |
14a5cf38 JH |
3788 | */ |
3789 | avail = (b->ptr - b->buf); | |
3790 | } | |
3791 | else { | |
3792 | /* | |
3793 | * Buffer is idle, set it up so whole buffer is available for | |
71200d45 | 3794 | * unread |
14a5cf38 JH |
3795 | */ |
3796 | avail = b->bufsiz; | |
3797 | b->end = b->buf + avail; | |
3798 | b->ptr = b->end; | |
3799 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
3800 | /* | |
71200d45 | 3801 | * Buffer extends _back_ from where we are now |
14a5cf38 JH |
3802 | */ |
3803 | b->posn -= b->bufsiz; | |
3804 | } | |
3805 | if (avail > (SSize_t) count) { | |
3806 | /* | |
71200d45 | 3807 | * If we have space for more than count, just move count |
14a5cf38 JH |
3808 | */ |
3809 | avail = count; | |
3810 | } | |
3811 | if (avail > 0) { | |
3812 | b->ptr -= avail; | |
3813 | buf -= avail; | |
3814 | /* | |
3815 | * In simple stdio-like ungetc() case chars will be already | |
71200d45 | 3816 | * there |
14a5cf38 JH |
3817 | */ |
3818 | if (buf != b->ptr) { | |
3819 | Copy(buf, b->ptr, avail, STDCHAR); | |
3820 | } | |
3821 | count -= avail; | |
3822 | unread += avail; | |
3823 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
3824 | } | |
3825 | } | |
93679785 NIS |
3826 | if (count > 0) { |
3827 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); | |
3828 | } | |
14a5cf38 | 3829 | return unread; |
760ac839 LW |
3830 | } |
3831 | ||
9e353e3b | 3832 | SSize_t |
f62ce20a | 3833 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 3834 | { |
de009b76 | 3835 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3836 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 3837 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
3838 | Size_t written = 0; |
3839 | if (!b->buf) | |
3840 | PerlIO_get_base(f); | |
3841 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
3842 | return 0; | |
0678cb22 NIS |
3843 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
3844 | if (PerlIO_flush(f) != 0) { | |
3845 | return 0; | |
3846 | } | |
3847 | } | |
ee56a6b9 CS |
3848 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
3849 | flushptr = buf + count; | |
3850 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
3851 | --flushptr; | |
3852 | } | |
14a5cf38 JH |
3853 | while (count > 0) { |
3854 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); | |
3855 | if ((SSize_t) count < avail) | |
3856 | avail = count; | |
ee56a6b9 CS |
3857 | if (flushptr > buf && flushptr <= buf + avail) |
3858 | avail = flushptr - buf; | |
14a5cf38 | 3859 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
ee56a6b9 CS |
3860 | if (avail) { |
3861 | Copy(buf, b->ptr, avail, STDCHAR); | |
3862 | count -= avail; | |
3863 | buf += avail; | |
3864 | written += avail; | |
3865 | b->ptr += avail; | |
3866 | if (buf == flushptr) | |
3867 | PerlIO_flush(f); | |
14a5cf38 JH |
3868 | } |
3869 | if (b->ptr >= (b->buf + b->bufsiz)) | |
3870 | PerlIO_flush(f); | |
3871 | } | |
3872 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
3873 | PerlIO_flush(f); | |
3874 | return written; | |
9e353e3b NIS |
3875 | } |
3876 | ||
94a175e1 | 3877 | IV |
f62ce20a | 3878 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3879 | { |
14a5cf38 JH |
3880 | IV code; |
3881 | if ((code = PerlIO_flush(f)) == 0) { | |
14a5cf38 JH |
3882 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
3883 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
3884 | if (code == 0) { | |
de009b76 | 3885 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3886 | b->posn = PerlIO_tell(PerlIONext(f)); |
3887 | } | |
9e353e3b | 3888 | } |
14a5cf38 | 3889 | return code; |
9e353e3b NIS |
3890 | } |
3891 | ||
3892 | Off_t | |
f62ce20a | 3893 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 3894 | { |
dcda55fc | 3895 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3896 | /* |
71200d45 | 3897 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
3898 | */ |
3899 | Off_t posn = b->posn; | |
37725cdc | 3900 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
3901 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
3902 | #if 1 | |
3903 | /* As O_APPEND files are normally shared in some sense it is better | |
3904 | to flush : | |
3905 | */ | |
3906 | PerlIO_flush(f); | |
3907 | #else | |
37725cdc | 3908 | /* when file is NOT shared then this is sufficient */ |
0678cb22 NIS |
3909 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
3910 | #endif | |
3911 | posn = b->posn = PerlIO_tell(PerlIONext(f)); | |
3912 | } | |
14a5cf38 JH |
3913 | if (b->buf) { |
3914 | /* | |
71200d45 | 3915 | * If buffer is valid adjust position by amount in buffer |
14a5cf38 JH |
3916 | */ |
3917 | posn += (b->ptr - b->buf); | |
3918 | } | |
3919 | return posn; | |
9e353e3b NIS |
3920 | } |
3921 | ||
3922 | IV | |
44798d05 NIS |
3923 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
3924 | { | |
de009b76 AL |
3925 | const IV code = PerlIOBase_popped(aTHX_ f); |
3926 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 NIS |
3927 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3928 | Safefree(b->buf); | |
3929 | } | |
dcda55fc | 3930 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
3931 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
3932 | return code; | |
3933 | } | |
3934 | ||
3935 | IV | |
f62ce20a | 3936 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 3937 | { |
de009b76 AL |
3938 | const IV code = PerlIOBase_close(aTHX_ f); |
3939 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 3940 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 3941 | Safefree(b->buf); |
14a5cf38 | 3942 | } |
dcda55fc | 3943 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
3944 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
3945 | return code; | |
760ac839 LW |
3946 | } |
3947 | ||
9e353e3b | 3948 | STDCHAR * |
f62ce20a | 3949 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3950 | { |
dcda55fc | 3951 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3952 | if (!b->buf) |
3953 | PerlIO_get_base(f); | |
3954 | return b->ptr; | |
9e353e3b NIS |
3955 | } |
3956 | ||
05d1247b | 3957 | SSize_t |
f62ce20a | 3958 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3959 | { |
dcda55fc | 3960 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3961 | if (!b->buf) |
3962 | PerlIO_get_base(f); | |
3963 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) | |
3964 | return (b->end - b->ptr); | |
3965 | return 0; | |
9e353e3b NIS |
3966 | } |
3967 | ||
3968 | STDCHAR * | |
f62ce20a | 3969 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3970 | { |
dcda55fc | 3971 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
3972 | PERL_UNUSED_CONTEXT; |
3973 | ||
14a5cf38 JH |
3974 | if (!b->buf) { |
3975 | if (!b->bufsiz) | |
3976 | b->bufsiz = 4096; | |
a02a5408 | 3977 | b->buf = Newxz(b->buf,b->bufsiz, STDCHAR); |
14a5cf38 JH |
3978 | if (!b->buf) { |
3979 | b->buf = (STDCHAR *) & b->oneword; | |
3980 | b->bufsiz = sizeof(b->oneword); | |
3981 | } | |
dcda55fc | 3982 | b->end = b->ptr = b->buf; |
06da4f11 | 3983 | } |
14a5cf38 | 3984 | return b->buf; |
9e353e3b NIS |
3985 | } |
3986 | ||
3987 | Size_t | |
f62ce20a | 3988 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3989 | { |
dcda55fc | 3990 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3991 | if (!b->buf) |
3992 | PerlIO_get_base(f); | |
3993 | return (b->end - b->buf); | |
9e353e3b NIS |
3994 | } |
3995 | ||
3996 | void | |
f62ce20a | 3997 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3998 | { |
dcda55fc | 3999 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4000 | if (!b->buf) |
4001 | PerlIO_get_base(f); | |
4002 | b->ptr = ptr; | |
4003 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) { | |
14a5cf38 JH |
4004 | assert(PerlIO_get_cnt(f) == cnt); |
4005 | assert(b->ptr >= b->buf); | |
4006 | } | |
4007 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
760ac839 LW |
4008 | } |
4009 | ||
71200d45 | 4010 | PerlIO * |
ecdeb87c | 4011 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4012 | { |
ecdeb87c | 4013 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4014 | } |
4015 | ||
4016 | ||
4017 | ||
27da23d5 | 4018 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4019 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4020 | "perlio", |
4021 | sizeof(PerlIOBuf), | |
86e05cf2 | 4022 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4023 | PerlIOBuf_pushed, |
44798d05 | 4024 | PerlIOBuf_popped, |
14a5cf38 | 4025 | PerlIOBuf_open, |
86e05cf2 | 4026 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4027 | NULL, |
4028 | PerlIOBase_fileno, | |
71200d45 | 4029 | PerlIOBuf_dup, |
14a5cf38 JH |
4030 | PerlIOBuf_read, |
4031 | PerlIOBuf_unread, | |
4032 | PerlIOBuf_write, | |
4033 | PerlIOBuf_seek, | |
4034 | PerlIOBuf_tell, | |
4035 | PerlIOBuf_close, | |
4036 | PerlIOBuf_flush, | |
4037 | PerlIOBuf_fill, | |
4038 | PerlIOBase_eof, | |
4039 | PerlIOBase_error, | |
4040 | PerlIOBase_clearerr, | |
4041 | PerlIOBase_setlinebuf, | |
4042 | PerlIOBuf_get_base, | |
4043 | PerlIOBuf_bufsiz, | |
4044 | PerlIOBuf_get_ptr, | |
4045 | PerlIOBuf_get_cnt, | |
4046 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4047 | }; |
4048 | ||
66ecd56b | 4049 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4050 | /* |
71200d45 | 4051 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4052 | */ |
5e2ab84b NIS |
4053 | |
4054 | IV | |
f62ce20a | 4055 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4056 | { |
14a5cf38 | 4057 | /* |
71200d45 | 4058 | * Should never happen |
14a5cf38 JH |
4059 | */ |
4060 | PerlIO_flush(f); | |
4061 | return 0; | |
5e2ab84b NIS |
4062 | } |
4063 | ||
4064 | IV | |
f62ce20a | 4065 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4066 | { |
14a5cf38 | 4067 | /* |
71200d45 | 4068 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4069 | */ |
4070 | PerlIO_flush(f); | |
4071 | return PerlIO_close(f); | |
5e2ab84b NIS |
4072 | } |
4073 | ||
94a175e1 | 4074 | IV |
f62ce20a | 4075 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4076 | { |
14a5cf38 | 4077 | /* |
71200d45 | 4078 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4079 | */ |
4080 | PerlIO_flush(f); | |
4081 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4082 | } |
4083 | ||
4084 | ||
4085 | IV | |
f62ce20a | 4086 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4087 | { |
dcda55fc | 4088 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4089 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
3a1ee7e8 | 4090 | Safefree(b->buf); |
14a5cf38 JH |
4091 | b->buf = NULL; |
4092 | } | |
4093 | PerlIO_pop(aTHX_ f); | |
4094 | return 0; | |
5e2ab84b NIS |
4095 | } |
4096 | ||
4097 | void | |
f62ce20a | 4098 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4099 | { |
14a5cf38 JH |
4100 | if (cnt <= 0) { |
4101 | PerlIO_flush(f); | |
4102 | } | |
4103 | else { | |
f62ce20a | 4104 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4105 | } |
5e2ab84b NIS |
4106 | } |
4107 | ||
4108 | IV | |
2dc2558e | 4109 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4110 | { |
de009b76 | 4111 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4112 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4113 | /* |
71200d45 NIS |
4114 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4115 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4116 | */ |
4117 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
4118 | (PerlIOBase(PerlIONext(f))-> | |
4119 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
4120 | return code; | |
5e2ab84b NIS |
4121 | } |
4122 | ||
4123 | SSize_t | |
f62ce20a | 4124 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4125 | { |
14a5cf38 JH |
4126 | SSize_t avail = PerlIO_get_cnt(f); |
4127 | SSize_t got = 0; | |
eb160463 | 4128 | if ((SSize_t)count < avail) |
14a5cf38 JH |
4129 | avail = count; |
4130 | if (avail > 0) | |
f62ce20a | 4131 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4132 | if (got >= 0 && got < (SSize_t)count) { |
de009b76 | 4133 | const SSize_t more = |
14a5cf38 JH |
4134 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); |
4135 | if (more >= 0 || got == 0) | |
4136 | got += more; | |
4137 | } | |
4138 | return got; | |
5e2ab84b NIS |
4139 | } |
4140 | ||
27da23d5 | 4141 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4142 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4143 | "pending", |
4144 | sizeof(PerlIOBuf), | |
86e05cf2 | 4145 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4146 | PerlIOPending_pushed, |
44798d05 | 4147 | PerlIOBuf_popped, |
14a5cf38 | 4148 | NULL, |
86e05cf2 | 4149 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4150 | NULL, |
4151 | PerlIOBase_fileno, | |
71200d45 | 4152 | PerlIOBuf_dup, |
14a5cf38 JH |
4153 | PerlIOPending_read, |
4154 | PerlIOBuf_unread, | |
4155 | PerlIOBuf_write, | |
4156 | PerlIOPending_seek, | |
4157 | PerlIOBuf_tell, | |
4158 | PerlIOPending_close, | |
4159 | PerlIOPending_flush, | |
4160 | PerlIOPending_fill, | |
4161 | PerlIOBase_eof, | |
4162 | PerlIOBase_error, | |
4163 | PerlIOBase_clearerr, | |
4164 | PerlIOBase_setlinebuf, | |
4165 | PerlIOBuf_get_base, | |
4166 | PerlIOBuf_bufsiz, | |
4167 | PerlIOBuf_get_ptr, | |
4168 | PerlIOBuf_get_cnt, | |
4169 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4170 | }; |
4171 | ||
4172 | ||
4173 | ||
4174 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4175 | /* |
4176 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4177 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4178 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4179 | * |
4180 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4181 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4182 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4183 | * that it ends at c->nl; these two cases can be distinguished by | |
4184 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4185 | * _unread() and _flush() calls. | |
4186 | * It only matters for read operations. | |
66ecd56b NIS |
4187 | */ |
4188 | ||
14a5cf38 | 4189 | typedef struct { |
22569500 NIS |
4190 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4191 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
14a5cf38 | 4192 | * buffer */ |
99efab12 NIS |
4193 | } PerlIOCrlf; |
4194 | ||
f5b9d040 | 4195 | IV |
2dc2558e | 4196 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4197 | { |
14a5cf38 JH |
4198 | IV code; |
4199 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4200 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4201 | #if 0 |
14a5cf38 JH |
4202 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
4203 | f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", | |
4204 | PerlIOBase(f)->flags); | |
5e2ab84b | 4205 | #endif |
8229d19f JH |
4206 | { |
4207 | /* Enable the first CRLF capable layer you can find, but if none | |
4208 | * found, the one we just pushed is fine. This results in at | |
4209 | * any given moment at most one CRLF-capable layer being enabled | |
4210 | * in the whole layer stack. */ | |
4211 | PerlIO *g = PerlIONext(f); | |
4212 | while (g && *g) { | |
4213 | PerlIOl *b = PerlIOBase(g); | |
4214 | if (b && b->tab == &PerlIO_crlf) { | |
4215 | if (!(b->flags & PERLIO_F_CRLF)) | |
4216 | b->flags |= PERLIO_F_CRLF; | |
4217 | PerlIO_pop(aTHX_ f); | |
4218 | return code; | |
4219 | } | |
4220 | g = PerlIONext(g); | |
4221 | } | |
4222 | } | |
14a5cf38 | 4223 | return code; |
f5b9d040 NIS |
4224 | } |
4225 | ||
4226 | ||
99efab12 | 4227 | SSize_t |
f62ce20a | 4228 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4229 | { |
dcda55fc | 4230 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4231 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
14a5cf38 JH |
4232 | *(c->nl) = 0xd; |
4233 | c->nl = NULL; | |
4234 | } | |
4235 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
f62ce20a | 4236 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
4237 | else { |
4238 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; | |
4239 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4240 | SSize_t unread = 0; | |
4241 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4242 | PerlIO_flush(f); | |
4243 | if (!b->buf) | |
4244 | PerlIO_get_base(f); | |
4245 | if (b->buf) { | |
4246 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4247 | b->end = b->ptr = b->buf + b->bufsiz; | |
4248 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4249 | b->posn -= b->bufsiz; | |
4250 | } | |
4251 | while (count > 0 && b->ptr > b->buf) { | |
dcda55fc | 4252 | const int ch = *--buf; |
14a5cf38 JH |
4253 | if (ch == '\n') { |
4254 | if (b->ptr - 2 >= b->buf) { | |
4255 | *--(b->ptr) = 0xa; | |
4256 | *--(b->ptr) = 0xd; | |
4257 | unread++; | |
4258 | count--; | |
4259 | } | |
4260 | else { | |
93c2c2ec IZ |
4261 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ |
4262 | *--(b->ptr) = 0xa; /* Works even if 0xa == '\r' */ | |
4263 | unread++; | |
4264 | count--; | |
14a5cf38 JH |
4265 | } |
4266 | } | |
4267 | else { | |
4268 | *--(b->ptr) = ch; | |
4269 | unread++; | |
4270 | count--; | |
4271 | } | |
4272 | } | |
4273 | } | |
4274 | return unread; | |
4275 | } | |
99efab12 NIS |
4276 | } |
4277 | ||
93c2c2ec | 4278 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4279 | SSize_t |
f62ce20a | 4280 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4281 | { |
dcda55fc | 4282 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4283 | if (!b->buf) |
4284 | PerlIO_get_base(f); | |
4285 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
dcda55fc | 4286 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
23b3c6af NIS |
4287 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { |
4288 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
14a5cf38 JH |
4289 | scan: |
4290 | while (nl < b->end && *nl != 0xd) | |
4291 | nl++; | |
4292 | if (nl < b->end && *nl == 0xd) { | |
4293 | test: | |
4294 | if (nl + 1 < b->end) { | |
4295 | if (nl[1] == 0xa) { | |
4296 | *nl = '\n'; | |
4297 | c->nl = nl; | |
4298 | } | |
4299 | else { | |
4300 | /* | |
71200d45 | 4301 | * Not CR,LF but just CR |
14a5cf38 JH |
4302 | */ |
4303 | nl++; | |
4304 | goto scan; | |
4305 | } | |
4306 | } | |
4307 | else { | |
4308 | /* | |
71200d45 | 4309 | * Blast - found CR as last char in buffer |
14a5cf38 | 4310 | */ |
e87a358a | 4311 | |
14a5cf38 JH |
4312 | if (b->ptr < nl) { |
4313 | /* | |
4314 | * They may not care, defer work as long as | |
71200d45 | 4315 | * possible |
14a5cf38 | 4316 | */ |
a0d1d361 | 4317 | c->nl = nl; |
14a5cf38 JH |
4318 | return (nl - b->ptr); |
4319 | } | |
4320 | else { | |
4321 | int code; | |
22569500 | 4322 | b->ptr++; /* say we have read it as far as |
14a5cf38 | 4323 | * flush() is concerned */ |
22569500 | 4324 | b->buf++; /* Leave space in front of buffer */ |
e949e37c NIS |
4325 | /* Note as we have moved buf up flush's |
4326 | posn += ptr-buf | |
4327 | will naturally make posn point at CR | |
4328 | */ | |
22569500 NIS |
4329 | b->bufsiz--; /* Buffer is thus smaller */ |
4330 | code = PerlIO_fill(f); /* Fetch some more */ | |
4331 | b->bufsiz++; /* Restore size for next time */ | |
4332 | b->buf--; /* Point at space */ | |
4333 | b->ptr = nl = b->buf; /* Which is what we hand | |
14a5cf38 | 4334 | * off */ |
22569500 | 4335 | *nl = 0xd; /* Fill in the CR */ |
14a5cf38 | 4336 | if (code == 0) |
22569500 | 4337 | goto test; /* fill() call worked */ |
14a5cf38 | 4338 | /* |
71200d45 | 4339 | * CR at EOF - just fall through |
14a5cf38 | 4340 | */ |
a0d1d361 | 4341 | /* Should we clear EOF though ??? */ |
14a5cf38 JH |
4342 | } |
4343 | } | |
4344 | } | |
4345 | } | |
4346 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
4347 | } | |
4348 | return 0; | |
99efab12 NIS |
4349 | } |
4350 | ||
4351 | void | |
f62ce20a | 4352 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4353 | { |
dcda55fc AL |
4354 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4355 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 JH |
4356 | if (!b->buf) |
4357 | PerlIO_get_base(f); | |
4358 | if (!ptr) { | |
a0d1d361 | 4359 | if (c->nl) { |
14a5cf38 | 4360 | ptr = c->nl + 1; |
22569500 | 4361 | if (ptr == b->end && *c->nl == 0xd) { |
a0d1d361 | 4362 | /* Defered CR at end of buffer case - we lied about count */ |
22569500 NIS |
4363 | ptr--; |
4364 | } | |
4365 | } | |
14a5cf38 JH |
4366 | else { |
4367 | ptr = b->end; | |
14a5cf38 JH |
4368 | } |
4369 | ptr -= cnt; | |
4370 | } | |
4371 | else { | |
bb263b4e | 4372 | /*EMPTY*/; |
3b4bd3fd | 4373 | #if 0 |
14a5cf38 | 4374 | /* |
71200d45 | 4375 | * Test code - delete when it works ... |
14a5cf38 | 4376 | */ |
3b4bd3fd | 4377 | IV flags = PerlIOBase(f)->flags; |
ba7abf9d | 4378 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; |
22569500 | 4379 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { |
a0d1d361 NIS |
4380 | /* Defered CR at end of buffer case - we lied about count */ |
4381 | chk--; | |
22569500 | 4382 | } |
14a5cf38 JH |
4383 | chk -= cnt; |
4384 | ||
a0d1d361 | 4385 | if (ptr != chk ) { |
99ef548b | 4386 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf |
14a5cf38 JH |
4387 | " nl=%p e=%p for %d", ptr, chk, flags, c->nl, |
4388 | b->end, cnt); | |
4389 | } | |
99ef548b | 4390 | #endif |
14a5cf38 JH |
4391 | } |
4392 | if (c->nl) { | |
4393 | if (ptr > c->nl) { | |
4394 | /* | |
71200d45 | 4395 | * They have taken what we lied about |
14a5cf38 JH |
4396 | */ |
4397 | *(c->nl) = 0xd; | |
4398 | c->nl = NULL; | |
4399 | ptr++; | |
4400 | } | |
4401 | } | |
4402 | b->ptr = ptr; | |
4403 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4404 | } |
4405 | ||
4406 | SSize_t | |
f62ce20a | 4407 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4408 | { |
14a5cf38 | 4409 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
f62ce20a | 4410 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4411 | else { |
dcda55fc | 4412 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4413 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
dcda55fc | 4414 | const STDCHAR * const ebuf = buf + count; |
14a5cf38 JH |
4415 | if (!b->buf) |
4416 | PerlIO_get_base(f); | |
4417 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4418 | return 0; | |
4419 | while (buf < ebuf) { | |
dcda55fc | 4420 | const STDCHAR * const eptr = b->buf + b->bufsiz; |
14a5cf38 JH |
4421 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
4422 | while (buf < ebuf && b->ptr < eptr) { | |
4423 | if (*buf == '\n') { | |
4424 | if ((b->ptr + 2) > eptr) { | |
4425 | /* | |
71200d45 | 4426 | * Not room for both |
14a5cf38 JH |
4427 | */ |
4428 | PerlIO_flush(f); | |
4429 | break; | |
4430 | } | |
4431 | else { | |
22569500 NIS |
4432 | *(b->ptr)++ = 0xd; /* CR */ |
4433 | *(b->ptr)++ = 0xa; /* LF */ | |
14a5cf38 JH |
4434 | buf++; |
4435 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4436 | PerlIO_flush(f); | |
4437 | break; | |
4438 | } | |
4439 | } | |
4440 | } | |
4441 | else { | |
dcda55fc | 4442 | *(b->ptr)++ = *buf++; |
14a5cf38 JH |
4443 | } |
4444 | if (b->ptr >= eptr) { | |
4445 | PerlIO_flush(f); | |
4446 | break; | |
4447 | } | |
4448 | } | |
4449 | } | |
4450 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4451 | PerlIO_flush(f); | |
4452 | return (buf - (STDCHAR *) vbuf); | |
4453 | } | |
99efab12 NIS |
4454 | } |
4455 | ||
4456 | IV | |
f62ce20a | 4457 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4458 | { |
dcda55fc | 4459 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 JH |
4460 | if (c->nl) { |
4461 | *(c->nl) = 0xd; | |
4462 | c->nl = NULL; | |
4463 | } | |
f62ce20a | 4464 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4465 | } |
4466 | ||
86e05cf2 NIS |
4467 | IV |
4468 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4469 | { | |
4470 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
4471 | /* In text mode - flush any pending stuff and flip it */ | |
4472 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
4473 | #ifndef PERLIO_USING_CRLF | |
4474 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ | |
4475 | if (PerlIOBase(f)->tab == &PerlIO_crlf) { | |
4476 | PerlIO_pop(aTHX_ f); | |
4477 | } | |
4478 | #endif | |
4479 | } | |
4480 | return 0; | |
4481 | } | |
4482 | ||
27da23d5 | 4483 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4484 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4485 | "crlf", |
4486 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4487 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4488 | PerlIOCrlf_pushed, |
44798d05 | 4489 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4490 | PerlIOBuf_open, |
86e05cf2 | 4491 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4492 | NULL, |
4493 | PerlIOBase_fileno, | |
71200d45 | 4494 | PerlIOBuf_dup, |
de009b76 | 4495 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4496 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4497 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4498 | PerlIOBuf_seek, |
4499 | PerlIOBuf_tell, | |
4500 | PerlIOBuf_close, | |
4501 | PerlIOCrlf_flush, | |
4502 | PerlIOBuf_fill, | |
4503 | PerlIOBase_eof, | |
4504 | PerlIOBase_error, | |
4505 | PerlIOBase_clearerr, | |
4506 | PerlIOBase_setlinebuf, | |
4507 | PerlIOBuf_get_base, | |
4508 | PerlIOBuf_bufsiz, | |
4509 | PerlIOBuf_get_ptr, | |
4510 | PerlIOCrlf_get_cnt, | |
4511 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4512 | }; |
4513 | ||
06da4f11 NIS |
4514 | #ifdef HAS_MMAP |
4515 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 4516 | /* |
71200d45 | 4517 | * mmap as "buffer" layer |
14a5cf38 | 4518 | */ |
06da4f11 | 4519 | |
14a5cf38 | 4520 | typedef struct { |
22569500 NIS |
4521 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4522 | Mmap_t mptr; /* Mapped address */ | |
4523 | Size_t len; /* mapped length */ | |
4524 | STDCHAR *bbuf; /* malloced buffer if map fails */ | |
06da4f11 NIS |
4525 | } PerlIOMmap; |
4526 | ||
4527 | IV | |
f62ce20a | 4528 | PerlIOMmap_map(pTHX_ PerlIO *f) |
06da4f11 | 4529 | { |
27da23d5 | 4530 | dVAR; |
de009b76 AL |
4531 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4532 | const IV flags = PerlIOBase(f)->flags; | |
14a5cf38 JH |
4533 | IV code = 0; |
4534 | if (m->len) | |
4535 | abort(); | |
4536 | if (flags & PERLIO_F_CANREAD) { | |
dcda55fc | 4537 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 4538 | const int fd = PerlIO_fileno(f); |
10eefe7f CB |
4539 | Stat_t st; |
4540 | code = Fstat(fd, &st); | |
14a5cf38 JH |
4541 | if (code == 0 && S_ISREG(st.st_mode)) { |
4542 | SSize_t len = st.st_size - b->posn; | |
4543 | if (len > 0) { | |
4544 | Off_t posn; | |
27da23d5 JH |
4545 | if (PL_mmap_page_size <= 0) |
4546 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, | |
4547 | PL_mmap_page_size); | |
14a5cf38 JH |
4548 | if (b->posn < 0) { |
4549 | /* | |
4550 | * This is a hack - should never happen - open should | |
71200d45 | 4551 | * have set it ! |
14a5cf38 JH |
4552 | */ |
4553 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4554 | } | |
27da23d5 | 4555 | posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size; |
14a5cf38 JH |
4556 | len = st.st_size - posn; |
4557 | m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); | |
4558 | if (m->mptr && m->mptr != (Mmap_t) - 1) { | |
a5262162 | 4559 | #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
14a5cf38 | 4560 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 | 4561 | #endif |
a5262162 | 4562 | #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) |
14a5cf38 | 4563 | madvise(m->mptr, len, MADV_WILLNEED); |
a5262162 | 4564 | #endif |
14a5cf38 JH |
4565 | PerlIOBase(f)->flags = |
4566 | (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; | |
4567 | b->end = ((STDCHAR *) m->mptr) + len; | |
4568 | b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); | |
4569 | b->ptr = b->buf; | |
4570 | m->len = len; | |
4571 | } | |
4572 | else { | |
4573 | b->buf = NULL; | |
4574 | } | |
4575 | } | |
4576 | else { | |
4577 | PerlIOBase(f)->flags = | |
4578 | flags | PERLIO_F_EOF | PERLIO_F_RDBUF; | |
4579 | b->buf = NULL; | |
4580 | b->ptr = b->end = b->ptr; | |
4581 | code = -1; | |
4582 | } | |
4583 | } | |
4584 | } | |
4585 | return code; | |
06da4f11 NIS |
4586 | } |
4587 | ||
4588 | IV | |
e87a358a | 4589 | PerlIOMmap_unmap(pTHX_ PerlIO *f) |
06da4f11 | 4590 | { |
dcda55fc | 4591 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
14a5cf38 JH |
4592 | IV code = 0; |
4593 | if (m->len) { | |
dcda55fc | 4594 | PerlIOBuf * const b = &m->base; |
14a5cf38 JH |
4595 | if (b->buf) { |
4596 | code = munmap(m->mptr, m->len); | |
4597 | b->buf = NULL; | |
4598 | m->len = 0; | |
4599 | m->mptr = NULL; | |
4600 | if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) | |
4601 | code = -1; | |
4602 | } | |
4603 | b->ptr = b->end = b->buf; | |
4604 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
4605 | } | |
4606 | return code; | |
06da4f11 NIS |
4607 | } |
4608 | ||
4609 | STDCHAR * | |
f62ce20a | 4610 | PerlIOMmap_get_base(pTHX_ PerlIO *f) |
06da4f11 | 4611 | { |
dcda55fc AL |
4612 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4613 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4614 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { |
4615 | /* | |
71200d45 | 4616 | * Already have a readbuffer in progress |
14a5cf38 JH |
4617 | */ |
4618 | return b->buf; | |
4619 | } | |
4620 | if (b->buf) { | |
4621 | /* | |
71200d45 | 4622 | * We have a write buffer or flushed PerlIOBuf read buffer |
14a5cf38 | 4623 | */ |
22569500 NIS |
4624 | m->bbuf = b->buf; /* save it in case we need it again */ |
4625 | b->buf = NULL; /* Clear to trigger below */ | |
14a5cf38 JH |
4626 | } |
4627 | if (!b->buf) { | |
22569500 | 4628 | PerlIOMmap_map(aTHX_ f); /* Try and map it */ |
14a5cf38 JH |
4629 | if (!b->buf) { |
4630 | /* | |
71200d45 | 4631 | * Map did not work - recover PerlIOBuf buffer if we have one |
14a5cf38 JH |
4632 | */ |
4633 | b->buf = m->bbuf; | |
4634 | } | |
4635 | } | |
4636 | b->ptr = b->end = b->buf; | |
4637 | if (b->buf) | |
4638 | return b->buf; | |
f62ce20a | 4639 | return PerlIOBuf_get_base(aTHX_ f); |
06da4f11 NIS |
4640 | } |
4641 | ||
4642 | SSize_t | |
f62ce20a | 4643 | PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4644 | { |
dcda55fc AL |
4645 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4646 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4647 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
4648 | PerlIO_flush(f); | |
4649 | if (b->ptr && (b->ptr - count) >= b->buf | |
4650 | && memEQ(b->ptr - count, vbuf, count)) { | |
4651 | b->ptr -= count; | |
4652 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4653 | return count; | |
4654 | } | |
4655 | if (m->len) { | |
4656 | /* | |
71200d45 | 4657 | * Loose the unwritable mapped buffer |
14a5cf38 JH |
4658 | */ |
4659 | PerlIO_flush(f); | |
4660 | /* | |
71200d45 | 4661 | * If flush took the "buffer" see if we have one from before |
14a5cf38 JH |
4662 | */ |
4663 | if (!b->buf && m->bbuf) | |
4664 | b->buf = m->bbuf; | |
4665 | if (!b->buf) { | |
f62ce20a | 4666 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4667 | m->bbuf = b->buf; |
4668 | } | |
4669 | } | |
f62ce20a | 4670 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4671 | } |
4672 | ||
4673 | SSize_t | |
f62ce20a | 4674 | PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
06da4f11 | 4675 | { |
de009b76 AL |
4676 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4677 | PerlIOBuf * const b = &m->base; | |
4678 | ||
14a5cf38 JH |
4679 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4680 | /* | |
71200d45 | 4681 | * No, or wrong sort of, buffer |
14a5cf38 JH |
4682 | */ |
4683 | if (m->len) { | |
e87a358a | 4684 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4685 | return 0; |
4686 | } | |
4687 | /* | |
71200d45 | 4688 | * If unmap took the "buffer" see if we have one from before |
14a5cf38 JH |
4689 | */ |
4690 | if (!b->buf && m->bbuf) | |
4691 | b->buf = m->bbuf; | |
4692 | if (!b->buf) { | |
f62ce20a | 4693 | PerlIOBuf_get_base(aTHX_ f); |
14a5cf38 JH |
4694 | m->bbuf = b->buf; |
4695 | } | |
06da4f11 | 4696 | } |
f62ce20a | 4697 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
06da4f11 NIS |
4698 | } |
4699 | ||
4700 | IV | |
f62ce20a | 4701 | PerlIOMmap_flush(pTHX_ PerlIO *f) |
06da4f11 | 4702 | { |
dcda55fc AL |
4703 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4704 | PerlIOBuf * const b = &m->base; | |
f62ce20a | 4705 | IV code = PerlIOBuf_flush(aTHX_ f); |
14a5cf38 | 4706 | /* |
71200d45 | 4707 | * Now we are "synced" at PerlIOBuf level |
14a5cf38 JH |
4708 | */ |
4709 | if (b->buf) { | |
4710 | if (m->len) { | |
4711 | /* | |
71200d45 | 4712 | * Unmap the buffer |
14a5cf38 | 4713 | */ |
e87a358a | 4714 | if (PerlIOMmap_unmap(aTHX_ f) != 0) |
14a5cf38 JH |
4715 | code = -1; |
4716 | } | |
4717 | else { | |
4718 | /* | |
4719 | * We seem to have a PerlIOBuf buffer which was not mapped | |
71200d45 | 4720 | * remember it in case we need one later |
14a5cf38 JH |
4721 | */ |
4722 | m->bbuf = b->buf; | |
4723 | } | |
4724 | } | |
4725 | return code; | |
06da4f11 NIS |
4726 | } |
4727 | ||
4728 | IV | |
f62ce20a | 4729 | PerlIOMmap_fill(pTHX_ PerlIO *f) |
06da4f11 | 4730 | { |
dcda55fc | 4731 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4732 | IV code = PerlIO_flush(f); |
4733 | if (code == 0 && !b->buf) { | |
f62ce20a | 4734 | code = PerlIOMmap_map(aTHX_ f); |
14a5cf38 JH |
4735 | } |
4736 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
f62ce20a | 4737 | code = PerlIOBuf_fill(aTHX_ f); |
14a5cf38 JH |
4738 | } |
4739 | return code; | |
06da4f11 NIS |
4740 | } |
4741 | ||
4742 | IV | |
f62ce20a | 4743 | PerlIOMmap_close(pTHX_ PerlIO *f) |
06da4f11 | 4744 | { |
dcda55fc AL |
4745 | PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap); |
4746 | PerlIOBuf * const b = &m->base; | |
14a5cf38 JH |
4747 | IV code = PerlIO_flush(f); |
4748 | if (m->bbuf) { | |
4749 | b->buf = m->bbuf; | |
4750 | m->bbuf = NULL; | |
4751 | b->ptr = b->end = b->buf; | |
4752 | } | |
f62ce20a | 4753 | if (PerlIOBuf_close(aTHX_ f) != 0) |
14a5cf38 JH |
4754 | code = -1; |
4755 | return code; | |
06da4f11 NIS |
4756 | } |
4757 | ||
71200d45 | 4758 | PerlIO * |
ecdeb87c | 4759 | PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4760 | { |
ecdeb87c | 4761 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4762 | } |
4763 | ||
06da4f11 | 4764 | |
27da23d5 | 4765 | PERLIO_FUNCS_DECL(PerlIO_mmap) = { |
2dc2558e | 4766 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4767 | "mmap", |
4768 | sizeof(PerlIOMmap), | |
86e05cf2 | 4769 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4770 | PerlIOBuf_pushed, |
44798d05 | 4771 | PerlIOBuf_popped, |
14a5cf38 | 4772 | PerlIOBuf_open, |
86e05cf2 | 4773 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4774 | NULL, |
4775 | PerlIOBase_fileno, | |
71200d45 | 4776 | PerlIOMmap_dup, |
14a5cf38 JH |
4777 | PerlIOBuf_read, |
4778 | PerlIOMmap_unread, | |
4779 | PerlIOMmap_write, | |
4780 | PerlIOBuf_seek, | |
4781 | PerlIOBuf_tell, | |
4782 | PerlIOBuf_close, | |
4783 | PerlIOMmap_flush, | |
4784 | PerlIOMmap_fill, | |
4785 | PerlIOBase_eof, | |
4786 | PerlIOBase_error, | |
4787 | PerlIOBase_clearerr, | |
4788 | PerlIOBase_setlinebuf, | |
4789 | PerlIOMmap_get_base, | |
4790 | PerlIOBuf_bufsiz, | |
4791 | PerlIOBuf_get_ptr, | |
4792 | PerlIOBuf_get_cnt, | |
4793 | PerlIOBuf_set_ptrcnt, | |
06da4f11 NIS |
4794 | }; |
4795 | ||
22569500 | 4796 | #endif /* HAS_MMAP */ |
06da4f11 | 4797 | |
9e353e3b | 4798 | PerlIO * |
e87a358a | 4799 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4800 | { |
97aff369 | 4801 | dVAR; |
a1ea730d | 4802 | if (!PL_perlio) { |
14a5cf38 JH |
4803 | PerlIO_stdstreams(aTHX); |
4804 | } | |
a1ea730d | 4805 | return &PL_perlio[1]; |
9e353e3b NIS |
4806 | } |
4807 | ||
9e353e3b | 4808 | PerlIO * |
e87a358a | 4809 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4810 | { |
97aff369 | 4811 | dVAR; |
a1ea730d | 4812 | if (!PL_perlio) { |
14a5cf38 JH |
4813 | PerlIO_stdstreams(aTHX); |
4814 | } | |
a1ea730d | 4815 | return &PL_perlio[2]; |
9e353e3b NIS |
4816 | } |
4817 | ||
9e353e3b | 4818 | PerlIO * |
e87a358a | 4819 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4820 | { |
97aff369 | 4821 | dVAR; |
a1ea730d | 4822 | if (!PL_perlio) { |
14a5cf38 JH |
4823 | PerlIO_stdstreams(aTHX); |
4824 | } | |
a1ea730d | 4825 | return &PL_perlio[3]; |
9e353e3b NIS |
4826 | } |
4827 | ||
4828 | /*--------------------------------------------------------------------------------------*/ | |
4829 | ||
9e353e3b NIS |
4830 | char * |
4831 | PerlIO_getname(PerlIO *f, char *buf) | |
4832 | { | |
14a5cf38 | 4833 | dTHX; |
a15cef0c | 4834 | #ifdef VMS |
73d840c0 | 4835 | char *name = NULL; |
7659f319 | 4836 | bool exported = FALSE; |
14a5cf38 | 4837 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 CB |
4838 | if (!stdio) { |
4839 | stdio = PerlIO_exportFILE(f,0); | |
4840 | exported = TRUE; | |
4841 | } | |
4842 | if (stdio) { | |
14a5cf38 | 4843 | name = fgetname(stdio, buf); |
7659f319 CB |
4844 | if (exported) PerlIO_releaseFILE(f,stdio); |
4845 | } | |
73d840c0 | 4846 | return name; |
a15cef0c | 4847 | #else |
8772537c AL |
4848 | PERL_UNUSED_ARG(f); |
4849 | PERL_UNUSED_ARG(buf); | |
14a5cf38 | 4850 | Perl_croak(aTHX_ "Don't know how to get file name"); |
bd61b366 | 4851 | return NULL; |
a15cef0c | 4852 | #endif |
9e353e3b NIS |
4853 | } |
4854 | ||
4855 | ||
4856 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4857 | /* |
4858 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4859 | * terms of above |
14a5cf38 | 4860 | */ |
9e353e3b | 4861 | |
e87a358a NIS |
4862 | #undef PerlIO_fdopen |
4863 | PerlIO * | |
4864 | PerlIO_fdopen(int fd, const char *mode) | |
4865 | { | |
4866 | dTHX; | |
bd61b366 | 4867 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4868 | } |
4869 | ||
4870 | #undef PerlIO_open | |
4871 | PerlIO * | |
4872 | PerlIO_open(const char *path, const char *mode) | |
4873 | { | |
4874 | dTHX; | |
42d9b98d | 4875 | SV *name = sv_2mortal(newSVpv(path, 0)); |
bd61b366 | 4876 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4877 | } |
4878 | ||
4879 | #undef Perlio_reopen | |
4880 | PerlIO * | |
4881 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4882 | { | |
4883 | dTHX; | |
42d9b98d | 4884 | SV *name = sv_2mortal(newSVpv(path,0)); |
bd61b366 | 4885 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4886 | } |
4887 | ||
9e353e3b | 4888 | #undef PerlIO_getc |
6f9d8c32 | 4889 | int |
9e353e3b | 4890 | PerlIO_getc(PerlIO *f) |
760ac839 | 4891 | { |
e87a358a | 4892 | dTHX; |
14a5cf38 | 4893 | STDCHAR buf[1]; |
de009b76 | 4894 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
14a5cf38 JH |
4895 | return (unsigned char) buf[0]; |
4896 | } | |
4897 | return EOF; | |
313ca112 NIS |
4898 | } |
4899 | ||
4900 | #undef PerlIO_ungetc | |
4901 | int | |
4902 | PerlIO_ungetc(PerlIO *f, int ch) | |
4903 | { | |
e87a358a | 4904 | dTHX; |
14a5cf38 JH |
4905 | if (ch != EOF) { |
4906 | STDCHAR buf = ch; | |
4907 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4908 | return ch; | |
4909 | } | |
4910 | return EOF; | |
760ac839 LW |
4911 | } |
4912 | ||
9e353e3b NIS |
4913 | #undef PerlIO_putc |
4914 | int | |
4915 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4916 | { |
e87a358a | 4917 | dTHX; |
14a5cf38 JH |
4918 | STDCHAR buf = ch; |
4919 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4920 | } |
4921 | ||
9e353e3b | 4922 | #undef PerlIO_puts |
760ac839 | 4923 | int |
9e353e3b | 4924 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4925 | { |
e87a358a | 4926 | dTHX; |
dcda55fc | 4927 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4928 | } |
4929 | ||
4930 | #undef PerlIO_rewind | |
4931 | void | |
c78749f2 | 4932 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4933 | { |
e87a358a | 4934 | dTHX; |
14a5cf38 JH |
4935 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4936 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4937 | } |
4938 | ||
4939 | #undef PerlIO_vprintf | |
4940 | int | |
4941 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4942 | { | |
14a5cf38 | 4943 | dTHX; |
396482e1 | 4944 | SV * const sv = newSVpvs(""); |
b83604b4 | 4945 | const char *s; |
14a5cf38 JH |
4946 | STRLEN len; |
4947 | SSize_t wrote; | |
2cc61e15 | 4948 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4949 | va_list apc; |
4950 | Perl_va_copy(ap, apc); | |
4951 | sv_vcatpvf(sv, fmt, &apc); | |
2cc61e15 | 4952 | #else |
14a5cf38 | 4953 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 | 4954 | #endif |
b83604b4 | 4955 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4956 | wrote = PerlIO_write(f, s, len); |
4957 | SvREFCNT_dec(sv); | |
4958 | return wrote; | |
760ac839 LW |
4959 | } |
4960 | ||
4961 | #undef PerlIO_printf | |
6f9d8c32 | 4962 | int |
14a5cf38 | 4963 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4964 | { |
14a5cf38 JH |
4965 | va_list ap; |
4966 | int result; | |
4967 | va_start(ap, fmt); | |
4968 | result = PerlIO_vprintf(f, fmt, ap); | |
4969 | va_end(ap); | |
4970 | return result; | |
760ac839 LW |
4971 | } |
4972 | ||
4973 | #undef PerlIO_stdoutf | |
6f9d8c32 | 4974 | int |
14a5cf38 | 4975 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 4976 | { |
e87a358a | 4977 | dTHX; |
14a5cf38 JH |
4978 | va_list ap; |
4979 | int result; | |
4980 | va_start(ap, fmt); | |
4981 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
4982 | va_end(ap); | |
4983 | return result; | |
760ac839 LW |
4984 | } |
4985 | ||
4986 | #undef PerlIO_tmpfile | |
4987 | PerlIO * | |
c78749f2 | 4988 | PerlIO_tmpfile(void) |
760ac839 | 4989 | { |
2941a2e1 JH |
4990 | dTHX; |
4991 | PerlIO *f = NULL; | |
2941a2e1 | 4992 | #ifdef WIN32 |
de009b76 | 4993 | const int fd = win32_tmpfd(); |
2941a2e1 JH |
4994 | if (fd >= 0) |
4995 | f = PerlIO_fdopen(fd, "w+b"); | |
4996 | #else /* WIN32 */ | |
460c8493 | 4997 | # if defined(HAS_MKSTEMP) && ! defined(VMS) && ! defined(OS2) |
396482e1 | 4998 | SV * const sv = newSVpvs("/tmp/PerlIO_XXXXXX"); |
2941a2e1 JH |
4999 | /* |
5000 | * I have no idea how portable mkstemp() is ... NI-S | |
5001 | */ | |
de009b76 | 5002 | const int fd = mkstemp(SvPVX(sv)); |
2941a2e1 JH |
5003 | if (fd >= 0) { |
5004 | f = PerlIO_fdopen(fd, "w+"); | |
5005 | if (f) | |
5006 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
b15aece3 | 5007 | PerlLIO_unlink(SvPVX_const(sv)); |
2941a2e1 JH |
5008 | SvREFCNT_dec(sv); |
5009 | } | |
5010 | # else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ | |
c4420975 | 5011 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 JH |
5012 | |
5013 | if (stdio) { | |
5014 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), | |
27da23d5 | 5015 | PERLIO_FUNCS_CAST(&PerlIO_stdio), |
a0714e2c | 5016 | "w+", NULL))) { |
c4420975 | 5017 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); |
2941a2e1 JH |
5018 | |
5019 | if (s) | |
5020 | s->stdio = stdio; | |
5021 | } | |
5022 | } | |
5023 | # endif /* else HAS_MKSTEMP */ | |
5024 | #endif /* else WIN32 */ | |
5025 | return f; | |
760ac839 LW |
5026 | } |
5027 | ||
6f9d8c32 NIS |
5028 | #undef HAS_FSETPOS |
5029 | #undef HAS_FGETPOS | |
5030 | ||
22569500 NIS |
5031 | #endif /* USE_SFIO */ |
5032 | #endif /* PERLIO_IS_STDIO */ | |
760ac839 | 5033 | |
9e353e3b | 5034 | /*======================================================================================*/ |
14a5cf38 | 5035 | /* |
71200d45 NIS |
5036 | * Now some functions in terms of above which may be needed even if we are |
5037 | * not in true PerlIO mode | |
9e353e3b NIS |
5038 | */ |
5039 | ||
760ac839 LW |
5040 | #ifndef HAS_FSETPOS |
5041 | #undef PerlIO_setpos | |
5042 | int | |
766a733e | 5043 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5044 | { |
14a5cf38 JH |
5045 | dTHX; |
5046 | if (SvOK(pos)) { | |
5047 | STRLEN len; | |
c4420975 | 5048 | const Off_t * const posn = (Off_t *) SvPV(pos, len); |
14a5cf38 JH |
5049 | if (f && len == sizeof(Off_t)) |
5050 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5051 | } | |
93189314 | 5052 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5053 | return -1; |
760ac839 | 5054 | } |
c411622e | 5055 | #else |
c411622e | 5056 | #undef PerlIO_setpos |
5057 | int | |
766a733e | 5058 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5059 | { |
14a5cf38 JH |
5060 | dTHX; |
5061 | if (SvOK(pos)) { | |
5062 | STRLEN len; | |
c4420975 | 5063 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); |
14a5cf38 | 5064 | if (f && len == sizeof(Fpos_t)) { |
2d4389e4 | 5065 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5066 | return fsetpos64(f, fpos); |
d9b3e12d | 5067 | #else |
14a5cf38 | 5068 | return fsetpos(f, fpos); |
d9b3e12d | 5069 | #endif |
14a5cf38 | 5070 | } |
766a733e | 5071 | } |
93189314 | 5072 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5073 | return -1; |
c411622e | 5074 | } |
5075 | #endif | |
760ac839 LW |
5076 | |
5077 | #ifndef HAS_FGETPOS | |
5078 | #undef PerlIO_getpos | |
5079 | int | |
766a733e | 5080 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5081 | { |
14a5cf38 JH |
5082 | dTHX; |
5083 | Off_t posn = PerlIO_tell(f); | |
5084 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5085 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5086 | } |
c411622e | 5087 | #else |
c411622e | 5088 | #undef PerlIO_getpos |
5089 | int | |
766a733e | 5090 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5091 | { |
14a5cf38 JH |
5092 | dTHX; |
5093 | Fpos_t fpos; | |
5094 | int code; | |
2d4389e4 | 5095 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5096 | code = fgetpos64(f, &fpos); |
d9b3e12d | 5097 | #else |
14a5cf38 | 5098 | code = fgetpos(f, &fpos); |
d9b3e12d | 5099 | #endif |
14a5cf38 JH |
5100 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5101 | return code; | |
c411622e | 5102 | } |
5103 | #endif | |
760ac839 LW |
5104 | |
5105 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) | |
5106 | ||
5107 | int | |
c78749f2 | 5108 | vprintf(char *pat, char *args) |
662a7e3f CS |
5109 | { |
5110 | _doprnt(pat, args, stdout); | |
22569500 | 5111 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5112 | * value */ |
662a7e3f CS |
5113 | } |
5114 | ||
5115 | int | |
c78749f2 | 5116 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 LW |
5117 | { |
5118 | _doprnt(pat, args, fd); | |
22569500 | 5119 | return 0; /* wrong, but perl doesn't use the return |
14a5cf38 | 5120 | * value */ |
760ac839 LW |
5121 | } |
5122 | ||
5123 | #endif | |
5124 | ||
5125 | #ifndef PerlIO_vsprintf | |
6f9d8c32 | 5126 | int |
8ac85365 | 5127 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 | 5128 | { |
27da23d5 | 5129 | dVAR; |
de009b76 | 5130 | const int val = vsprintf(s, fmt, ap); |
14a5cf38 JH |
5131 | if (n >= 0) { |
5132 | if (strlen(s) >= (STRLEN) n) { | |
5133 | dTHX; | |
5134 | (void) PerlIO_puts(Perl_error_log, | |
5135 | "panic: sprintf overflow - memory corrupted!\n"); | |
5136 | my_exit(1); | |
5137 | } | |
760ac839 | 5138 | } |
14a5cf38 | 5139 | return val; |
760ac839 LW |
5140 | } |
5141 | #endif | |
5142 | ||
5143 | #ifndef PerlIO_sprintf | |
6f9d8c32 | 5144 | int |
14a5cf38 | 5145 | PerlIO_sprintf(char *s, int n, const char *fmt, ...) |
760ac839 | 5146 | { |
14a5cf38 JH |
5147 | va_list ap; |
5148 | int result; | |
5149 | va_start(ap, fmt); | |
5150 | result = PerlIO_vsprintf(s, n, fmt, ap); | |
5151 | va_end(ap); | |
5152 | return result; | |
760ac839 LW |
5153 | } |
5154 | #endif | |
9cfa90c0 NC |
5155 | |
5156 | /* | |
5157 | * Local variables: | |
5158 | * c-indentation-style: bsd | |
5159 | * c-basic-offset: 4 | |
5160 | * indent-tabs-mode: t | |
5161 | * End: | |
5162 | * | |
37442d52 RGS |
5163 | * ex: set ts=8 sts=4 sw=4 noet: |
5164 | */ |