Commit | Line | Data |
760ac839 |
1 | /* perlio.c |
2 | * |
1761cee5 |
3 | * Copyright (c) 1996-2000, Nick Ing-Simmons |
760ac839 |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
8 | */ |
9 | |
10 | #define VOIDUSED 1 |
12ae5dfc |
11 | #ifdef PERL_MICRO |
12 | # include "uconfig.h" |
13 | #else |
14 | # include "config.h" |
15 | #endif |
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16 | |
6f9d8c32 |
17 | #define PERLIO_NOT_STDIO 0 |
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18 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
6f9d8c32 |
19 | /* #define PerlIO FILE */ |
760ac839 |
20 | #endif |
21 | /* |
6f9d8c32 |
22 | * This file provides those parts of PerlIO abstraction |
88b61e10 |
23 | * which are not #defined in perlio.h. |
6f9d8c32 |
24 | * Which these are depends on various Configure #ifdef's |
760ac839 |
25 | */ |
26 | |
27 | #include "EXTERN.h" |
864dbfa3 |
28 | #define PERL_IN_PERLIO_C |
760ac839 |
29 | #include "perl.h" |
30 | |
5f1a76d0 |
31 | #undef PerlMemShared_calloc |
32 | #define PerlMemShared_calloc(x,y) calloc(x,y) |
33 | #undef PerlMemShared_free |
34 | #define PerlMemShared_free(x) free(x) |
35 | |
36 | |
ac27b0f5 |
37 | #ifndef PERLIO_LAYERS |
38 | int |
39 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
40 | { |
95c70f20 |
41 | if (!names || !*names || strEQ(names,":crlf") || strEQ(names,":raw")) |
42 | { |
43 | return 0; |
88b61e10 |
44 | } |
ac27b0f5 |
45 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl",names); |
5a2dd417 |
46 | /* NOTREACHED */ |
88b61e10 |
47 | return -1; |
ac27b0f5 |
48 | } |
60382766 |
49 | |
50 | int |
f5b9d040 |
51 | perlsio_binmode(FILE *fp, int iotype, int mode) |
60382766 |
52 | { |
53 | /* This used to be contents of do_binmode in doio.c */ |
54 | #ifdef DOSISH |
55 | # if defined(atarist) || defined(__MINT__) |
f5b9d040 |
56 | if (!fflush(fp)) { |
60382766 |
57 | if (mode & O_BINARY) |
58 | ((FILE*)fp)->_flag |= _IOBIN; |
59 | else |
60 | ((FILE*)fp)->_flag &= ~ _IOBIN; |
61 | return 1; |
62 | } |
63 | return 0; |
64 | # else |
f5b9d040 |
65 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { |
60382766 |
66 | # if defined(WIN32) && defined(__BORLANDC__) |
67 | /* The translation mode of the stream is maintained independent |
68 | * of the translation mode of the fd in the Borland RTL (heavy |
69 | * digging through their runtime sources reveal). User has to |
70 | * set the mode explicitly for the stream (though they don't |
71 | * document this anywhere). GSAR 97-5-24 |
72 | */ |
f5b9d040 |
73 | fseek(fp,0L,0); |
60382766 |
74 | if (mode & O_BINARY) |
f5b9d040 |
75 | fp->flags |= _F_BIN; |
60382766 |
76 | else |
f5b9d040 |
77 | fp->flags &= ~ _F_BIN; |
60382766 |
78 | # endif |
79 | return 1; |
80 | } |
81 | else |
82 | return 0; |
83 | # endif |
84 | #else |
85 | # if defined(USEMYBINMODE) |
86 | if (my_binmode(fp, iotype, mode) != FALSE) |
87 | return 1; |
88 | else |
89 | return 0; |
90 | # else |
91 | return 1; |
92 | # endif |
93 | #endif |
94 | } |
95 | |
f5b9d040 |
96 | int |
97 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) |
98 | { |
99 | return perlsio_binmode(fp,iotype,mode); |
100 | } |
60382766 |
101 | |
ac27b0f5 |
102 | #endif |
103 | |
32e30700 |
104 | |
6f9d8c32 |
105 | #ifdef PERLIO_IS_STDIO |
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106 | |
107 | void |
8ac85365 |
108 | PerlIO_init(void) |
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109 | { |
6f9d8c32 |
110 | /* Does nothing (yet) except force this file to be included |
760ac839 |
111 | in perl binary. That allows this file to force inclusion |
6f9d8c32 |
112 | of other functions that may be required by loadable |
113 | extensions e.g. for FileHandle::tmpfile |
760ac839 |
114 | */ |
115 | } |
116 | |
33dcbb9a |
117 | #undef PerlIO_tmpfile |
118 | PerlIO * |
8ac85365 |
119 | PerlIO_tmpfile(void) |
33dcbb9a |
120 | { |
121 | return tmpfile(); |
122 | } |
123 | |
760ac839 |
124 | #else /* PERLIO_IS_STDIO */ |
125 | |
126 | #ifdef USE_SFIO |
127 | |
128 | #undef HAS_FSETPOS |
129 | #undef HAS_FGETPOS |
130 | |
6f9d8c32 |
131 | /* This section is just to make sure these functions |
760ac839 |
132 | get pulled in from libsfio.a |
133 | */ |
134 | |
135 | #undef PerlIO_tmpfile |
136 | PerlIO * |
c78749f2 |
137 | PerlIO_tmpfile(void) |
760ac839 |
138 | { |
139 | return sftmp(0); |
140 | } |
141 | |
142 | void |
c78749f2 |
143 | PerlIO_init(void) |
760ac839 |
144 | { |
6f9d8c32 |
145 | /* Force this file to be included in perl binary. Which allows |
146 | * this file to force inclusion of other functions that may be |
147 | * required by loadable extensions e.g. for FileHandle::tmpfile |
760ac839 |
148 | */ |
149 | |
150 | /* Hack |
151 | * sfio does its own 'autoflush' on stdout in common cases. |
6f9d8c32 |
152 | * Flush results in a lot of lseek()s to regular files and |
760ac839 |
153 | * lot of small writes to pipes. |
154 | */ |
155 | sfset(sfstdout,SF_SHARE,0); |
156 | } |
157 | |
17c3b450 |
158 | #else /* USE_SFIO */ |
6f9d8c32 |
159 | /*======================================================================================*/ |
6f9d8c32 |
160 | /* Implement all the PerlIO interface ourselves. |
9e353e3b |
161 | */ |
760ac839 |
162 | |
76ced9ad |
163 | #include "perliol.h" |
164 | |
b1ef6e3b |
165 | /* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */ |
02f66e2f |
166 | #ifdef I_UNISTD |
167 | #include <unistd.h> |
168 | #endif |
06da4f11 |
169 | #ifdef HAS_MMAP |
170 | #include <sys/mman.h> |
171 | #endif |
172 | |
f3862f8b |
173 | #include "XSUB.h" |
02f66e2f |
174 | |
88b61e10 |
175 | void PerlIO_debug(const char *fmt,...) __attribute__((format(__printf__,1,2))); |
6f9d8c32 |
176 | |
6f9d8c32 |
177 | void |
88b61e10 |
178 | PerlIO_debug(const char *fmt,...) |
6f9d8c32 |
179 | { |
adb71456 |
180 | dTHX; |
6f9d8c32 |
181 | static int dbg = 0; |
88b61e10 |
182 | va_list ap; |
183 | va_start(ap,fmt); |
6f9d8c32 |
184 | if (!dbg) |
185 | { |
00b02797 |
186 | char *s = PerlEnv_getenv("PERLIO_DEBUG"); |
6f9d8c32 |
187 | if (s && *s) |
00b02797 |
188 | dbg = PerlLIO_open3(s,O_WRONLY|O_CREAT|O_APPEND,0666); |
6f9d8c32 |
189 | else |
190 | dbg = -1; |
191 | } |
192 | if (dbg > 0) |
193 | { |
194 | dTHX; |
6f9d8c32 |
195 | SV *sv = newSVpvn("",0); |
196 | char *s; |
197 | STRLEN len; |
05d1247b |
198 | s = CopFILE(PL_curcop); |
199 | if (!s) |
200 | s = "(none)"; |
201 | Perl_sv_catpvf(aTHX_ sv, "%s:%"IVdf" ", s, (IV)CopLINE(PL_curcop)); |
c7fc522f |
202 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
203 | |
6f9d8c32 |
204 | s = SvPV(sv,len); |
00b02797 |
205 | PerlLIO_write(dbg,s,len); |
6f9d8c32 |
206 | SvREFCNT_dec(sv); |
207 | } |
88b61e10 |
208 | va_end(ap); |
6f9d8c32 |
209 | } |
210 | |
9e353e3b |
211 | /*--------------------------------------------------------------------------------------*/ |
212 | |
9e353e3b |
213 | /* Inner level routines */ |
214 | |
b1ef6e3b |
215 | /* Table of pointers to the PerlIO structs (malloc'ed) */ |
05d1247b |
216 | PerlIO *_perlio = NULL; |
217 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 |
218 | |
760ac839 |
219 | PerlIO * |
5f1a76d0 |
220 | PerlIO_allocate(pTHX) |
6f9d8c32 |
221 | { |
f3862f8b |
222 | /* Find a free slot in the table, allocating new table as necessary */ |
5f1a76d0 |
223 | PerlIO **last; |
6f9d8c32 |
224 | PerlIO *f; |
5f1a76d0 |
225 | last = &_perlio; |
05d1247b |
226 | while ((f = *last)) |
6f9d8c32 |
227 | { |
05d1247b |
228 | int i; |
229 | last = (PerlIO **)(f); |
230 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
6f9d8c32 |
231 | { |
05d1247b |
232 | if (!*++f) |
6f9d8c32 |
233 | { |
6f9d8c32 |
234 | return f; |
235 | } |
6f9d8c32 |
236 | } |
6f9d8c32 |
237 | } |
5f1a76d0 |
238 | f = PerlMemShared_calloc(PERLIO_TABLE_SIZE,sizeof(PerlIO)); |
05d1247b |
239 | if (!f) |
5f1a76d0 |
240 | { |
241 | return NULL; |
242 | } |
05d1247b |
243 | *last = f; |
244 | return f+1; |
245 | } |
246 | |
247 | void |
5f1a76d0 |
248 | PerlIO_cleantable(pTHX_ PerlIO **tablep) |
05d1247b |
249 | { |
250 | PerlIO *table = *tablep; |
251 | if (table) |
252 | { |
253 | int i; |
5f1a76d0 |
254 | PerlIO_cleantable(aTHX_ (PerlIO **) &(table[0])); |
05d1247b |
255 | for (i=PERLIO_TABLE_SIZE-1; i > 0; i--) |
256 | { |
257 | PerlIO *f = table+i; |
60382766 |
258 | if (*f) |
3789aae2 |
259 | { |
260 | PerlIO_close(f); |
261 | } |
05d1247b |
262 | } |
5f1a76d0 |
263 | PerlMemShared_free(table); |
05d1247b |
264 | *tablep = NULL; |
265 | } |
266 | } |
267 | |
4a4a6116 |
268 | HV *PerlIO_layer_hv; |
269 | AV *PerlIO_layer_av; |
270 | |
05d1247b |
271 | void |
5f1a76d0 |
272 | PerlIO_cleanup() |
05d1247b |
273 | { |
5f1a76d0 |
274 | dTHX; |
275 | PerlIO_cleantable(aTHX_ &_perlio); |
6f9d8c32 |
276 | } |
277 | |
9e353e3b |
278 | void |
279 | PerlIO_pop(PerlIO *f) |
760ac839 |
280 | { |
5f1a76d0 |
281 | dTHX; |
9e353e3b |
282 | PerlIOl *l = *f; |
283 | if (l) |
6f9d8c32 |
284 | { |
86295796 |
285 | PerlIO_debug("PerlIO_pop f=%p %s\n",f,l->tab->name); |
06da4f11 |
286 | (*l->tab->Popped)(f); |
9e353e3b |
287 | *f = l->next; |
5f1a76d0 |
288 | PerlMemShared_free(l); |
6f9d8c32 |
289 | } |
6f9d8c32 |
290 | } |
291 | |
9e353e3b |
292 | /*--------------------------------------------------------------------------------------*/ |
b931b1d9 |
293 | /* XS Interface for perl code */ |
9e353e3b |
294 | |
b931b1d9 |
295 | XS(XS_perlio_import) |
f3862f8b |
296 | { |
297 | dXSARGS; |
298 | GV *gv = CvGV(cv); |
299 | char *s = GvNAME(gv); |
300 | STRLEN l = GvNAMELEN(gv); |
301 | PerlIO_debug("%.*s\n",(int) l,s); |
302 | XSRETURN_EMPTY; |
303 | } |
304 | |
b931b1d9 |
305 | XS(XS_perlio_unimport) |
f3862f8b |
306 | { |
307 | dXSARGS; |
308 | GV *gv = CvGV(cv); |
309 | char *s = GvNAME(gv); |
310 | STRLEN l = GvNAMELEN(gv); |
311 | PerlIO_debug("%.*s\n",(int) l,s); |
312 | XSRETURN_EMPTY; |
313 | } |
314 | |
f3862f8b |
315 | SV * |
ac27b0f5 |
316 | PerlIO_find_layer(const char *name, STRLEN len) |
f3862f8b |
317 | { |
318 | dTHX; |
319 | SV **svp; |
320 | SV *sv; |
321 | if (len <= 0) |
322 | len = strlen(name); |
323 | svp = hv_fetch(PerlIO_layer_hv,name,len,0); |
324 | if (svp && (sv = *svp) && SvROK(sv)) |
325 | return *svp; |
326 | return NULL; |
327 | } |
328 | |
b13b2135 |
329 | |
330 | static int |
331 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) |
332 | { |
333 | if (SvROK(sv)) |
334 | { |
b931b1d9 |
335 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 |
336 | PerlIO *ifp = IoIFP(io); |
337 | PerlIO *ofp = IoOFP(io); |
338 | AV *av = (AV *) mg->mg_obj; |
4659c93f |
339 | Perl_warn(aTHX_ "set %"SVf" %p %p %p",sv,io,ifp,ofp); |
b13b2135 |
340 | } |
341 | return 0; |
342 | } |
343 | |
344 | static int |
345 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) |
346 | { |
347 | if (SvROK(sv)) |
348 | { |
b931b1d9 |
349 | IO *io = GvIOn((GV *)SvRV(sv)); |
b13b2135 |
350 | PerlIO *ifp = IoIFP(io); |
351 | PerlIO *ofp = IoOFP(io); |
352 | AV *av = (AV *) mg->mg_obj; |
4659c93f |
353 | Perl_warn(aTHX_ "get %"SVf" %p %p %p",sv,io,ifp,ofp); |
b13b2135 |
354 | } |
355 | return 0; |
356 | } |
357 | |
358 | static int |
359 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) |
360 | { |
4659c93f |
361 | Perl_warn(aTHX_ "clear %"SVf,sv); |
b13b2135 |
362 | return 0; |
363 | } |
364 | |
365 | static int |
366 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) |
367 | { |
4659c93f |
368 | Perl_warn(aTHX_ "free %"SVf,sv); |
b13b2135 |
369 | return 0; |
370 | } |
371 | |
372 | MGVTBL perlio_vtab = { |
373 | perlio_mg_get, |
374 | perlio_mg_set, |
375 | NULL, /* len */ |
376 | NULL, |
377 | perlio_mg_free |
378 | }; |
379 | |
380 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
381 | { |
382 | dXSARGS; |
383 | SV *sv = SvRV(ST(1)); |
384 | AV *av = newAV(); |
385 | MAGIC *mg; |
386 | int count = 0; |
387 | int i; |
388 | sv_magic(sv, (SV *)av, '~', NULL, 0); |
389 | SvRMAGICAL_off(sv); |
390 | mg = mg_find(sv,'~'); |
391 | mg->mg_virtual = &perlio_vtab; |
392 | mg_magical(sv); |
4659c93f |
393 | Perl_warn(aTHX_ "attrib %"SVf,sv); |
b13b2135 |
394 | for (i=2; i < items; i++) |
395 | { |
396 | STRLEN len; |
ac27b0f5 |
397 | const char *name = SvPV(ST(i),len); |
b13b2135 |
398 | SV *layer = PerlIO_find_layer(name,len); |
399 | if (layer) |
400 | { |
401 | av_push(av,SvREFCNT_inc(layer)); |
402 | } |
403 | else |
404 | { |
405 | ST(count) = ST(i); |
406 | count++; |
407 | } |
408 | } |
409 | SvREFCNT_dec(av); |
410 | XSRETURN(count); |
411 | } |
412 | |
f3862f8b |
413 | void |
414 | PerlIO_define_layer(PerlIO_funcs *tab) |
415 | { |
416 | dTHX; |
b931b1d9 |
417 | HV *stash = gv_stashpv("perlio::Layer", TRUE); |
e7778b43 |
418 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash); |
f3862f8b |
419 | hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),sv,0); |
420 | } |
421 | |
422 | PerlIO_funcs * |
423 | PerlIO_default_layer(I32 n) |
424 | { |
425 | dTHX; |
426 | SV **svp; |
427 | SV *layer; |
428 | PerlIO_funcs *tab = &PerlIO_stdio; |
429 | int len; |
430 | if (!PerlIO_layer_hv) |
431 | { |
ac27b0f5 |
432 | const char *s = PerlEnv_getenv("PERLIO"); |
b931b1d9 |
433 | newXS("perlio::import",XS_perlio_import,__FILE__); |
434 | newXS("perlio::unimport",XS_perlio_unimport,__FILE__); |
435 | #if 0 |
b13b2135 |
436 | newXS("io::MODIFY_SCALAR_ATTRIBUTES",XS_io_MODIFY_SCALAR_ATTRIBUTES,__FILE__); |
b931b1d9 |
437 | #endif |
438 | PerlIO_layer_hv = get_hv("open::layers",GV_ADD|GV_ADDMULTI); |
439 | PerlIO_layer_av = get_av("open::layers",GV_ADD|GV_ADDMULTI); |
f3862f8b |
440 | PerlIO_define_layer(&PerlIO_unix); |
f3862f8b |
441 | PerlIO_define_layer(&PerlIO_perlio); |
442 | PerlIO_define_layer(&PerlIO_stdio); |
66ecd56b |
443 | PerlIO_define_layer(&PerlIO_crlf); |
06da4f11 |
444 | #ifdef HAS_MMAP |
445 | PerlIO_define_layer(&PerlIO_mmap); |
446 | #endif |
f3862f8b |
447 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_unix.name,0))); |
448 | if (s) |
449 | { |
450 | while (*s) |
451 | { |
00b02797 |
452 | while (*s && isSPACE((unsigned char)*s)) |
f3862f8b |
453 | s++; |
454 | if (*s) |
455 | { |
ac27b0f5 |
456 | const char *e = s; |
f3862f8b |
457 | SV *layer; |
00b02797 |
458 | while (*e && !isSPACE((unsigned char)*e)) |
f3862f8b |
459 | e++; |
ac27b0f5 |
460 | if (*s == ':') |
461 | s++; |
f3862f8b |
462 | layer = PerlIO_find_layer(s,e-s); |
463 | if (layer) |
464 | { |
465 | PerlIO_debug("Pushing %.*s\n",(e-s),s); |
466 | av_push(PerlIO_layer_av,SvREFCNT_inc(layer)); |
467 | } |
468 | else |
ef0f9817 |
469 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(e-s),s); |
f3862f8b |
470 | s = e; |
471 | } |
472 | } |
473 | } |
474 | } |
475 | len = av_len(PerlIO_layer_av); |
476 | if (len < 1) |
477 | { |
f5b9d040 |
478 | if (O_BINARY != O_TEXT) |
f3862f8b |
479 | { |
f5b9d040 |
480 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_crlf.name,0))); |
f3862f8b |
481 | } |
482 | else |
a4d3c1d3 |
483 | { |
f5b9d040 |
484 | if (PerlIO_stdio.Set_ptrcnt) |
485 | { |
486 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_stdio.name,0))); |
487 | } |
a4d3c1d3 |
488 | else |
f5b9d040 |
489 | { |
490 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_perlio.name,0))); |
491 | } |
a4d3c1d3 |
492 | } |
f3862f8b |
493 | len = av_len(PerlIO_layer_av); |
494 | } |
495 | if (n < 0) |
496 | n += len+1; |
497 | svp = av_fetch(PerlIO_layer_av,n,0); |
498 | if (svp && (layer = *svp) && SvROK(layer) && SvIOK((layer = SvRV(layer)))) |
499 | { |
e7778b43 |
500 | tab = INT2PTR(PerlIO_funcs *, SvIV(layer)); |
f3862f8b |
501 | } |
502 | /* PerlIO_debug("Layer %d is %s\n",n,tab->name); */ |
503 | return tab; |
504 | } |
505 | |
60382766 |
506 | #define PerlIO_default_top() PerlIO_default_layer(-1) |
507 | #define PerlIO_default_btm() PerlIO_default_layer(0) |
508 | |
509 | void |
510 | PerlIO_stdstreams() |
511 | { |
512 | if (!_perlio) |
513 | { |
5f1a76d0 |
514 | dTHX; |
515 | PerlIO_allocate(aTHX); |
f5b9d040 |
516 | PerlIO_fdopen(0,"Ir" PERLIO_STDTEXT); |
517 | PerlIO_fdopen(1,"Iw" PERLIO_STDTEXT); |
518 | PerlIO_fdopen(2,"Iw" PERLIO_STDTEXT); |
60382766 |
519 | } |
520 | } |
521 | |
522 | PerlIO * |
523 | PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode) |
524 | { |
5f1a76d0 |
525 | dTHX; |
60382766 |
526 | PerlIOl *l = NULL; |
5f1a76d0 |
527 | l = PerlMemShared_calloc(tab->size,sizeof(char)); |
60382766 |
528 | if (l) |
529 | { |
530 | Zero(l,tab->size,char); |
531 | l->next = *f; |
532 | l->tab = tab; |
533 | *f = l; |
a4d3c1d3 |
534 | PerlIO_debug("PerlIO_push f=%p %s %s\n",f,tab->name,(mode) ? mode : "(Null)"); |
60382766 |
535 | if ((*l->tab->Pushed)(f,mode) != 0) |
536 | { |
537 | PerlIO_pop(f); |
538 | return NULL; |
539 | } |
540 | } |
541 | return f; |
542 | } |
543 | |
ac27b0f5 |
544 | int |
545 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
546 | { |
547 | if (names) |
548 | { |
549 | const char *s = names; |
550 | while (*s) |
551 | { |
552 | while (isSPACE(*s)) |
553 | s++; |
554 | if (*s == ':') |
555 | s++; |
556 | if (*s) |
557 | { |
558 | const char *e = s; |
559 | while (*e && *e != ':' && !isSPACE(*e)) |
560 | e++; |
561 | if (e > s) |
562 | { |
60382766 |
563 | if ((e - s) == 3 && strncmp(s,"raw",3) == 0) |
ac27b0f5 |
564 | { |
60382766 |
565 | /* Pop back to bottom layer */ |
566 | if (PerlIONext(f)) |
ac27b0f5 |
567 | { |
60382766 |
568 | PerlIO_flush(f); |
569 | while (PerlIONext(f)) |
570 | { |
571 | PerlIO_pop(f); |
572 | } |
ac27b0f5 |
573 | } |
574 | } |
575 | else |
60382766 |
576 | { |
577 | SV *layer = PerlIO_find_layer(s,e-s); |
578 | if (layer) |
579 | { |
580 | PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer))); |
581 | if (tab) |
582 | { |
583 | PerlIO *new = PerlIO_push(f,tab,mode); |
584 | if (!new) |
585 | return -1; |
586 | } |
587 | } |
588 | else |
589 | Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(int)(e-s),s); |
590 | } |
ac27b0f5 |
591 | } |
592 | s = e; |
593 | } |
594 | } |
595 | } |
596 | return 0; |
597 | } |
598 | |
f3862f8b |
599 | |
9e353e3b |
600 | |
60382766 |
601 | /*--------------------------------------------------------------------------------------*/ |
602 | /* Given the abstraction above the public API functions */ |
603 | |
604 | int |
f5b9d040 |
605 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad |
606 | { |
86295796 |
607 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", |
a4d3c1d3 |
608 | f,PerlIOBase(f)->tab->name,iotype,mode, (names) ? names : "(Null)"); |
60382766 |
609 | if (!names || (O_TEXT != O_BINARY && mode & O_BINARY)) |
76ced9ad |
610 | { |
f5b9d040 |
611 | PerlIO *top = f; |
60382766 |
612 | PerlIOl *l; |
613 | while (l = *top) |
76ced9ad |
614 | { |
60382766 |
615 | if (PerlIOBase(top)->tab == &PerlIO_crlf) |
616 | { |
617 | PerlIO_flush(top); |
a4d3c1d3 |
618 | PerlIOBase(top)->flags &= ~PERLIO_F_CRLF; |
60382766 |
619 | break; |
620 | } |
621 | top = PerlIONext(top); |
76ced9ad |
622 | } |
623 | } |
f5b9d040 |
624 | return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; |
625 | } |
626 | |
627 | #undef PerlIO__close |
628 | int |
629 | PerlIO__close(PerlIO *f) |
630 | { |
631 | return (*PerlIOBase(f)->tab->Close)(f); |
76ced9ad |
632 | } |
633 | |
5f1a76d0 |
634 | #undef PerlIO_fdupopen |
635 | PerlIO * |
636 | PerlIO_fdupopen(pTHX_ PerlIO *f) |
637 | { |
638 | char buf[8]; |
639 | int fd = PerlLIO_dup(PerlIO_fileno(f)); |
640 | PerlIO *new = PerlIO_fdopen(fd,PerlIO_modestr(f,buf)); |
641 | if (new) |
642 | { |
643 | Off_t posn = PerlIO_tell(f); |
644 | PerlIO_seek(new,posn,SEEK_SET); |
645 | } |
646 | return new; |
647 | } |
f5b9d040 |
648 | |
b931b1d9 |
649 | #undef PerlIO_close |
650 | int |
651 | PerlIO_close(PerlIO *f) |
652 | { |
653 | int code = (*PerlIOBase(f)->tab->Close)(f); |
654 | while (*f) |
655 | { |
656 | PerlIO_pop(f); |
657 | } |
658 | return code; |
659 | } |
660 | |
661 | #undef PerlIO_fileno |
662 | int |
663 | PerlIO_fileno(PerlIO *f) |
664 | { |
665 | return (*PerlIOBase(f)->tab->Fileno)(f); |
666 | } |
667 | |
668 | |
669 | |
9e353e3b |
670 | #undef PerlIO_fdopen |
671 | PerlIO * |
672 | PerlIO_fdopen(int fd, const char *mode) |
673 | { |
674 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
675 | if (!_perlio) |
676 | PerlIO_stdstreams(); |
06da4f11 |
677 | return (*tab->Fdopen)(tab,fd,mode); |
9e353e3b |
678 | } |
679 | |
6f9d8c32 |
680 | #undef PerlIO_open |
681 | PerlIO * |
682 | PerlIO_open(const char *path, const char *mode) |
683 | { |
9e353e3b |
684 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
685 | if (!_perlio) |
686 | PerlIO_stdstreams(); |
06da4f11 |
687 | return (*tab->Open)(tab,path,mode); |
6f9d8c32 |
688 | } |
689 | |
9e353e3b |
690 | #undef PerlIO_reopen |
691 | PerlIO * |
692 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) |
6f9d8c32 |
693 | { |
9e353e3b |
694 | if (f) |
6f9d8c32 |
695 | { |
9e353e3b |
696 | PerlIO_flush(f); |
697 | if ((*PerlIOBase(f)->tab->Reopen)(path,mode,f) == 0) |
698 | { |
06da4f11 |
699 | if ((*PerlIOBase(f)->tab->Pushed)(f,mode) == 0) |
700 | return f; |
9e353e3b |
701 | } |
702 | return NULL; |
6f9d8c32 |
703 | } |
9e353e3b |
704 | else |
705 | return PerlIO_open(path,mode); |
760ac839 |
706 | } |
707 | |
9e353e3b |
708 | #undef PerlIO_read |
709 | SSize_t |
710 | PerlIO_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
711 | { |
9e353e3b |
712 | return (*PerlIOBase(f)->tab->Read)(f,vbuf,count); |
760ac839 |
713 | } |
714 | |
313ca112 |
715 | #undef PerlIO_unread |
716 | SSize_t |
717 | PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
718 | { |
313ca112 |
719 | return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count); |
760ac839 |
720 | } |
721 | |
9e353e3b |
722 | #undef PerlIO_write |
723 | SSize_t |
724 | PerlIO_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
725 | { |
9e353e3b |
726 | return (*PerlIOBase(f)->tab->Write)(f,vbuf,count); |
760ac839 |
727 | } |
728 | |
9e353e3b |
729 | #undef PerlIO_seek |
6f9d8c32 |
730 | int |
9e353e3b |
731 | PerlIO_seek(PerlIO *f, Off_t offset, int whence) |
760ac839 |
732 | { |
9e353e3b |
733 | return (*PerlIOBase(f)->tab->Seek)(f,offset,whence); |
760ac839 |
734 | } |
735 | |
9e353e3b |
736 | #undef PerlIO_tell |
737 | Off_t |
738 | PerlIO_tell(PerlIO *f) |
760ac839 |
739 | { |
9e353e3b |
740 | return (*PerlIOBase(f)->tab->Tell)(f); |
760ac839 |
741 | } |
742 | |
9e353e3b |
743 | #undef PerlIO_flush |
6f9d8c32 |
744 | int |
9e353e3b |
745 | PerlIO_flush(PerlIO *f) |
760ac839 |
746 | { |
6f9d8c32 |
747 | if (f) |
748 | { |
9e353e3b |
749 | return (*PerlIOBase(f)->tab->Flush)(f); |
6f9d8c32 |
750 | } |
9e353e3b |
751 | else |
6f9d8c32 |
752 | { |
05d1247b |
753 | PerlIO **table = &_perlio; |
9e353e3b |
754 | int code = 0; |
05d1247b |
755 | while ((f = *table)) |
6f9d8c32 |
756 | { |
05d1247b |
757 | int i; |
758 | table = (PerlIO **)(f++); |
759 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
9e353e3b |
760 | { |
761 | if (*f && PerlIO_flush(f) != 0) |
762 | code = -1; |
05d1247b |
763 | f++; |
9e353e3b |
764 | } |
6f9d8c32 |
765 | } |
9e353e3b |
766 | return code; |
6f9d8c32 |
767 | } |
760ac839 |
768 | } |
769 | |
06da4f11 |
770 | #undef PerlIO_fill |
771 | int |
772 | PerlIO_fill(PerlIO *f) |
773 | { |
774 | return (*PerlIOBase(f)->tab->Fill)(f); |
775 | } |
776 | |
f3862f8b |
777 | #undef PerlIO_isutf8 |
778 | int |
779 | PerlIO_isutf8(PerlIO *f) |
780 | { |
781 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; |
782 | } |
783 | |
9e353e3b |
784 | #undef PerlIO_eof |
6f9d8c32 |
785 | int |
9e353e3b |
786 | PerlIO_eof(PerlIO *f) |
760ac839 |
787 | { |
9e353e3b |
788 | return (*PerlIOBase(f)->tab->Eof)(f); |
789 | } |
790 | |
791 | #undef PerlIO_error |
792 | int |
793 | PerlIO_error(PerlIO *f) |
794 | { |
795 | return (*PerlIOBase(f)->tab->Error)(f); |
796 | } |
797 | |
798 | #undef PerlIO_clearerr |
799 | void |
800 | PerlIO_clearerr(PerlIO *f) |
801 | { |
f5b9d040 |
802 | if (f && *f) |
803 | (*PerlIOBase(f)->tab->Clearerr)(f); |
9e353e3b |
804 | } |
805 | |
806 | #undef PerlIO_setlinebuf |
807 | void |
808 | PerlIO_setlinebuf(PerlIO *f) |
809 | { |
810 | (*PerlIOBase(f)->tab->Setlinebuf)(f); |
811 | } |
812 | |
813 | #undef PerlIO_has_base |
814 | int |
815 | PerlIO_has_base(PerlIO *f) |
816 | { |
817 | if (f && *f) |
6f9d8c32 |
818 | { |
9e353e3b |
819 | return (PerlIOBase(f)->tab->Get_base != NULL); |
6f9d8c32 |
820 | } |
9e353e3b |
821 | return 0; |
760ac839 |
822 | } |
823 | |
9e353e3b |
824 | #undef PerlIO_fast_gets |
825 | int |
826 | PerlIO_fast_gets(PerlIO *f) |
760ac839 |
827 | { |
5e2ab84b |
828 | if (f && *f && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) |
6f9d8c32 |
829 | { |
5e2ab84b |
830 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
831 | return (tab->Set_ptrcnt != NULL); |
6f9d8c32 |
832 | } |
9e353e3b |
833 | return 0; |
834 | } |
835 | |
836 | #undef PerlIO_has_cntptr |
837 | int |
838 | PerlIO_has_cntptr(PerlIO *f) |
839 | { |
840 | if (f && *f) |
841 | { |
842 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
843 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); |
844 | } |
845 | return 0; |
846 | } |
847 | |
848 | #undef PerlIO_canset_cnt |
849 | int |
850 | PerlIO_canset_cnt(PerlIO *f) |
851 | { |
852 | if (f && *f) |
853 | { |
c7fc522f |
854 | PerlIOl *l = PerlIOBase(f); |
855 | return (l->tab->Set_ptrcnt != NULL); |
9e353e3b |
856 | } |
c7fc522f |
857 | return 0; |
760ac839 |
858 | } |
859 | |
860 | #undef PerlIO_get_base |
888911fc |
861 | STDCHAR * |
a20bf0c3 |
862 | PerlIO_get_base(PerlIO *f) |
760ac839 |
863 | { |
9e353e3b |
864 | return (*PerlIOBase(f)->tab->Get_base)(f); |
865 | } |
866 | |
867 | #undef PerlIO_get_bufsiz |
868 | int |
869 | PerlIO_get_bufsiz(PerlIO *f) |
870 | { |
871 | return (*PerlIOBase(f)->tab->Get_bufsiz)(f); |
872 | } |
873 | |
874 | #undef PerlIO_get_ptr |
875 | STDCHAR * |
876 | PerlIO_get_ptr(PerlIO *f) |
877 | { |
5e2ab84b |
878 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
879 | if (tab->Get_ptr == NULL) |
880 | return NULL; |
881 | return (*tab->Get_ptr)(f); |
9e353e3b |
882 | } |
883 | |
884 | #undef PerlIO_get_cnt |
05d1247b |
885 | int |
9e353e3b |
886 | PerlIO_get_cnt(PerlIO *f) |
887 | { |
5e2ab84b |
888 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
889 | if (tab->Get_cnt == NULL) |
890 | return 0; |
891 | return (*tab->Get_cnt)(f); |
9e353e3b |
892 | } |
893 | |
894 | #undef PerlIO_set_cnt |
895 | void |
05d1247b |
896 | PerlIO_set_cnt(PerlIO *f,int cnt) |
9e353e3b |
897 | { |
f3862f8b |
898 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt); |
9e353e3b |
899 | } |
900 | |
901 | #undef PerlIO_set_ptrcnt |
902 | void |
05d1247b |
903 | PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) |
9e353e3b |
904 | { |
5e2ab84b |
905 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
906 | if (tab->Set_ptrcnt == NULL) |
907 | { |
908 | dTHX; |
909 | Perl_croak(aTHX_ "PerlIO buffer snooping abuse"); |
910 | } |
f3862f8b |
911 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt); |
9e353e3b |
912 | } |
913 | |
914 | /*--------------------------------------------------------------------------------------*/ |
915 | /* "Methods" of the "base class" */ |
916 | |
917 | IV |
918 | PerlIOBase_fileno(PerlIO *f) |
919 | { |
920 | return PerlIO_fileno(PerlIONext(f)); |
921 | } |
922 | |
f5b9d040 |
923 | char * |
924 | PerlIO_modestr(PerlIO *f,char *buf) |
925 | { |
926 | char *s = buf; |
927 | IV flags = PerlIOBase(f)->flags; |
5f1a76d0 |
928 | if (flags & PERLIO_F_APPEND) |
929 | { |
930 | *s++ = 'a'; |
931 | if (flags & PERLIO_F_CANREAD) |
932 | { |
933 | *s++ = '+'; |
934 | } |
935 | } |
936 | else if (flags & PERLIO_F_CANREAD) |
937 | { |
938 | *s++ = 'r'; |
939 | if (flags & PERLIO_F_CANWRITE) |
940 | *s++ = '+'; |
941 | } |
942 | else if (flags & PERLIO_F_CANWRITE) |
943 | { |
944 | *s++ = 'w'; |
945 | if (flags & PERLIO_F_CANREAD) |
946 | { |
947 | *s++ = '+'; |
948 | } |
949 | } |
950 | #if O_TEXT != O_BINARY |
951 | if (!(flags & PERLIO_F_CRLF)) |
a4d3c1d3 |
952 | *s++ = 'b'; |
5f1a76d0 |
953 | #endif |
f5b9d040 |
954 | *s = '\0'; |
955 | return buf; |
956 | } |
957 | |
76ced9ad |
958 | IV |
959 | PerlIOBase_pushed(PerlIO *f, const char *mode) |
9e353e3b |
960 | { |
76ced9ad |
961 | PerlIOl *l = PerlIOBase(f); |
f5b9d040 |
962 | const char *omode = mode; |
963 | char temp[8]; |
5e2ab84b |
964 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
76ced9ad |
965 | l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
f5b9d040 |
966 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND); |
5e2ab84b |
967 | if (tab->Set_ptrcnt != NULL) |
968 | l->flags |= PERLIO_F_FASTGETS; |
76ced9ad |
969 | if (mode) |
6f9d8c32 |
970 | { |
76ced9ad |
971 | switch (*mode++) |
06da4f11 |
972 | { |
76ced9ad |
973 | case 'r': |
f5b9d040 |
974 | l->flags |= PERLIO_F_CANREAD; |
76ced9ad |
975 | break; |
976 | case 'a': |
f5b9d040 |
977 | l->flags |= PERLIO_F_APPEND|PERLIO_F_CANWRITE; |
76ced9ad |
978 | break; |
979 | case 'w': |
f5b9d040 |
980 | l->flags |= PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE; |
76ced9ad |
981 | break; |
982 | default: |
983 | errno = EINVAL; |
984 | return -1; |
985 | } |
986 | while (*mode) |
987 | { |
988 | switch (*mode++) |
989 | { |
990 | case '+': |
991 | l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE; |
992 | break; |
993 | case 'b': |
f5b9d040 |
994 | l->flags &= ~PERLIO_F_CRLF; |
995 | break; |
996 | case 't': |
997 | l->flags |= PERLIO_F_CRLF; |
76ced9ad |
998 | break; |
999 | default: |
1000 | errno = EINVAL; |
1001 | return -1; |
1002 | } |
06da4f11 |
1003 | } |
6f9d8c32 |
1004 | } |
76ced9ad |
1005 | else |
1006 | { |
1007 | if (l->next) |
1008 | { |
1009 | l->flags |= l->next->flags & |
f5b9d040 |
1010 | (PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_TRUNCATE|PERLIO_F_APPEND); |
76ced9ad |
1011 | } |
1012 | } |
5e2ab84b |
1013 | #if 0 |
4659c93f |
1014 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08"UVxf" (%s)\n", |
f5b9d040 |
1015 | f,PerlIOBase(f)->tab->name,(omode) ? omode : "(Null)", |
a4d3c1d3 |
1016 | l->flags,PerlIO_modestr(f,temp)); |
5e2ab84b |
1017 | #endif |
76ced9ad |
1018 | return 0; |
1019 | } |
1020 | |
1021 | IV |
1022 | PerlIOBase_popped(PerlIO *f) |
1023 | { |
1024 | return 0; |
760ac839 |
1025 | } |
1026 | |
5e2ab84b |
1027 | extern PerlIO_funcs PerlIO_pending; |
1028 | |
9e353e3b |
1029 | SSize_t |
1030 | PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count) |
1031 | { |
5e2ab84b |
1032 | #if 0 |
9e353e3b |
1033 | Off_t old = PerlIO_tell(f); |
5e2ab84b |
1034 | if (0 && PerlIO_seek(f,-((Off_t)count),SEEK_CUR) == 0) |
9e353e3b |
1035 | { |
1036 | Off_t new = PerlIO_tell(f); |
1037 | return old - new; |
1038 | } |
5e2ab84b |
1039 | else |
1040 | { |
1041 | return 0; |
1042 | } |
1043 | #else |
1044 | PerlIO_push(f,&PerlIO_pending,"r"); |
1045 | return PerlIOBuf_unread(f,vbuf,count); |
1046 | #endif |
9e353e3b |
1047 | } |
1048 | |
1049 | IV |
06da4f11 |
1050 | PerlIOBase_noop_ok(PerlIO *f) |
9e353e3b |
1051 | { |
1052 | return 0; |
1053 | } |
1054 | |
1055 | IV |
06da4f11 |
1056 | PerlIOBase_noop_fail(PerlIO *f) |
1057 | { |
1058 | return -1; |
1059 | } |
1060 | |
1061 | IV |
9e353e3b |
1062 | PerlIOBase_close(PerlIO *f) |
1063 | { |
1064 | IV code = 0; |
f5b9d040 |
1065 | PerlIO *n = PerlIONext(f); |
9e353e3b |
1066 | if (PerlIO_flush(f) != 0) |
1067 | code = -1; |
f5b9d040 |
1068 | if (n && (*PerlIOBase(n)->tab->Close)(n) != 0) |
9e353e3b |
1069 | code = -1; |
1070 | PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN); |
1071 | return code; |
1072 | } |
1073 | |
1074 | IV |
1075 | PerlIOBase_eof(PerlIO *f) |
1076 | { |
1077 | if (f && *f) |
1078 | { |
1079 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
1080 | } |
1081 | return 1; |
1082 | } |
1083 | |
1084 | IV |
1085 | PerlIOBase_error(PerlIO *f) |
1086 | { |
1087 | if (f && *f) |
1088 | { |
1089 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
1090 | } |
1091 | return 1; |
1092 | } |
1093 | |
1094 | void |
1095 | PerlIOBase_clearerr(PerlIO *f) |
1096 | { |
1097 | if (f && *f) |
1098 | { |
f5b9d040 |
1099 | PerlIO *n = PerlIONext(f); |
1100 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR|PERLIO_F_EOF); |
1101 | if (n) |
1102 | PerlIO_clearerr(n); |
9e353e3b |
1103 | } |
1104 | } |
1105 | |
1106 | void |
1107 | PerlIOBase_setlinebuf(PerlIO *f) |
1108 | { |
1109 | |
1110 | } |
1111 | |
9e353e3b |
1112 | /*--------------------------------------------------------------------------------------*/ |
1113 | /* Bottom-most level for UNIX-like case */ |
1114 | |
1115 | typedef struct |
1116 | { |
1117 | struct _PerlIO base; /* The generic part */ |
1118 | int fd; /* UNIX like file descriptor */ |
1119 | int oflags; /* open/fcntl flags */ |
1120 | } PerlIOUnix; |
1121 | |
6f9d8c32 |
1122 | int |
9e353e3b |
1123 | PerlIOUnix_oflags(const char *mode) |
760ac839 |
1124 | { |
9e353e3b |
1125 | int oflags = -1; |
1126 | switch(*mode) |
1127 | { |
1128 | case 'r': |
1129 | oflags = O_RDONLY; |
1130 | if (*++mode == '+') |
1131 | { |
1132 | oflags = O_RDWR; |
1133 | mode++; |
1134 | } |
1135 | break; |
1136 | |
1137 | case 'w': |
1138 | oflags = O_CREAT|O_TRUNC; |
1139 | if (*++mode == '+') |
1140 | { |
1141 | oflags |= O_RDWR; |
1142 | mode++; |
1143 | } |
1144 | else |
1145 | oflags |= O_WRONLY; |
1146 | break; |
1147 | |
1148 | case 'a': |
1149 | oflags = O_CREAT|O_APPEND; |
1150 | if (*++mode == '+') |
1151 | { |
1152 | oflags |= O_RDWR; |
1153 | mode++; |
1154 | } |
1155 | else |
1156 | oflags |= O_WRONLY; |
1157 | break; |
1158 | } |
83b075c3 |
1159 | if (*mode == 'b') |
1160 | { |
f5b9d040 |
1161 | oflags |= O_BINARY; |
1162 | oflags &= ~O_TEXT; |
1163 | mode++; |
1164 | } |
1165 | else if (*mode == 't') |
1166 | { |
1167 | oflags |= O_TEXT; |
1168 | oflags &= ~O_BINARY; |
60382766 |
1169 | mode++; |
1170 | } |
99efab12 |
1171 | /* Always open in binary mode */ |
1172 | oflags |= O_BINARY; |
9e353e3b |
1173 | if (*mode || oflags == -1) |
6f9d8c32 |
1174 | { |
9e353e3b |
1175 | errno = EINVAL; |
1176 | oflags = -1; |
6f9d8c32 |
1177 | } |
9e353e3b |
1178 | return oflags; |
1179 | } |
1180 | |
1181 | IV |
1182 | PerlIOUnix_fileno(PerlIO *f) |
1183 | { |
1184 | return PerlIOSelf(f,PerlIOUnix)->fd; |
1185 | } |
1186 | |
1187 | PerlIO * |
06da4f11 |
1188 | PerlIOUnix_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
1189 | { |
5f1a76d0 |
1190 | dTHX; |
9e353e3b |
1191 | PerlIO *f = NULL; |
c7fc522f |
1192 | if (*mode == 'I') |
1193 | mode++; |
9e353e3b |
1194 | if (fd >= 0) |
1195 | { |
1196 | int oflags = PerlIOUnix_oflags(mode); |
1197 | if (oflags != -1) |
1198 | { |
5f1a76d0 |
1199 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(aTHX),self,mode),PerlIOUnix); |
9e353e3b |
1200 | s->fd = fd; |
1201 | s->oflags = oflags; |
1202 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
1203 | } |
1204 | } |
1205 | return f; |
1206 | } |
1207 | |
1208 | PerlIO * |
06da4f11 |
1209 | PerlIOUnix_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
1210 | { |
adb71456 |
1211 | dTHX; |
9e353e3b |
1212 | PerlIO *f = NULL; |
1213 | int oflags = PerlIOUnix_oflags(mode); |
1214 | if (oflags != -1) |
1215 | { |
00b02797 |
1216 | int fd = PerlLIO_open3(path,oflags,0666); |
9e353e3b |
1217 | if (fd >= 0) |
1218 | { |
5f1a76d0 |
1219 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(aTHX),self,mode),PerlIOUnix); |
9e353e3b |
1220 | s->fd = fd; |
1221 | s->oflags = oflags; |
1222 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
1223 | } |
1224 | } |
1225 | return f; |
760ac839 |
1226 | } |
1227 | |
760ac839 |
1228 | int |
9e353e3b |
1229 | PerlIOUnix_reopen(const char *path, const char *mode, PerlIO *f) |
760ac839 |
1230 | { |
9e353e3b |
1231 | PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix); |
1232 | int oflags = PerlIOUnix_oflags(mode); |
1233 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
1234 | (*PerlIOBase(f)->tab->Close)(f); |
1235 | if (oflags != -1) |
1236 | { |
adb71456 |
1237 | dTHX; |
00b02797 |
1238 | int fd = PerlLIO_open3(path,oflags,0666); |
9e353e3b |
1239 | if (fd >= 0) |
1240 | { |
1241 | s->fd = fd; |
1242 | s->oflags = oflags; |
1243 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
1244 | return 0; |
1245 | } |
1246 | } |
1247 | return -1; |
1248 | } |
1249 | |
1250 | SSize_t |
1251 | PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count) |
1252 | { |
adb71456 |
1253 | dTHX; |
9e353e3b |
1254 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
8f24bd79 |
1255 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
1256 | return 0; |
9e353e3b |
1257 | while (1) |
1258 | { |
00b02797 |
1259 | SSize_t len = PerlLIO_read(fd,vbuf,count); |
9e353e3b |
1260 | if (len >= 0 || errno != EINTR) |
06da4f11 |
1261 | { |
1262 | if (len < 0) |
1263 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1264 | else if (len == 0 && count != 0) |
1265 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
1266 | return len; |
1267 | } |
9e353e3b |
1268 | } |
1269 | } |
1270 | |
1271 | SSize_t |
1272 | PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count) |
1273 | { |
adb71456 |
1274 | dTHX; |
9e353e3b |
1275 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1276 | while (1) |
1277 | { |
00b02797 |
1278 | SSize_t len = PerlLIO_write(fd,vbuf,count); |
9e353e3b |
1279 | if (len >= 0 || errno != EINTR) |
06da4f11 |
1280 | { |
1281 | if (len < 0) |
1282 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1283 | return len; |
1284 | } |
9e353e3b |
1285 | } |
1286 | } |
1287 | |
1288 | IV |
1289 | PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence) |
1290 | { |
adb71456 |
1291 | dTHX; |
00b02797 |
1292 | Off_t new = PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence); |
06da4f11 |
1293 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
9e353e3b |
1294 | return (new == (Off_t) -1) ? -1 : 0; |
1295 | } |
1296 | |
1297 | Off_t |
1298 | PerlIOUnix_tell(PerlIO *f) |
1299 | { |
adb71456 |
1300 | dTHX; |
00b02797 |
1301 | return PerlLIO_lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
9e353e3b |
1302 | } |
1303 | |
1304 | IV |
1305 | PerlIOUnix_close(PerlIO *f) |
1306 | { |
adb71456 |
1307 | dTHX; |
9e353e3b |
1308 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
1309 | int code = 0; |
00b02797 |
1310 | while (PerlLIO_close(fd) != 0) |
9e353e3b |
1311 | { |
1312 | if (errno != EINTR) |
1313 | { |
1314 | code = -1; |
1315 | break; |
1316 | } |
1317 | } |
1318 | if (code == 0) |
1319 | { |
1320 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
1321 | } |
1322 | return code; |
1323 | } |
1324 | |
1325 | PerlIO_funcs PerlIO_unix = { |
1326 | "unix", |
1327 | sizeof(PerlIOUnix), |
f5b9d040 |
1328 | PERLIO_K_RAW, |
9e353e3b |
1329 | PerlIOUnix_fileno, |
1330 | PerlIOUnix_fdopen, |
1331 | PerlIOUnix_open, |
1332 | PerlIOUnix_reopen, |
06da4f11 |
1333 | PerlIOBase_pushed, |
1334 | PerlIOBase_noop_ok, |
9e353e3b |
1335 | PerlIOUnix_read, |
1336 | PerlIOBase_unread, |
1337 | PerlIOUnix_write, |
1338 | PerlIOUnix_seek, |
1339 | PerlIOUnix_tell, |
1340 | PerlIOUnix_close, |
76ced9ad |
1341 | PerlIOBase_noop_ok, /* flush */ |
1342 | PerlIOBase_noop_fail, /* fill */ |
9e353e3b |
1343 | PerlIOBase_eof, |
1344 | PerlIOBase_error, |
1345 | PerlIOBase_clearerr, |
1346 | PerlIOBase_setlinebuf, |
1347 | NULL, /* get_base */ |
1348 | NULL, /* get_bufsiz */ |
1349 | NULL, /* get_ptr */ |
1350 | NULL, /* get_cnt */ |
1351 | NULL, /* set_ptrcnt */ |
1352 | }; |
1353 | |
1354 | /*--------------------------------------------------------------------------------------*/ |
1355 | /* stdio as a layer */ |
1356 | |
1357 | typedef struct |
1358 | { |
1359 | struct _PerlIO base; |
1360 | FILE * stdio; /* The stream */ |
1361 | } PerlIOStdio; |
1362 | |
1363 | IV |
1364 | PerlIOStdio_fileno(PerlIO *f) |
1365 | { |
adb71456 |
1366 | dTHX; |
eaf8b698 |
1367 | return PerlSIO_fileno(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b |
1368 | } |
1369 | |
f5b9d040 |
1370 | const char * |
1371 | PerlIOStdio_mode(const char *mode,char *tmode) |
1372 | { |
1373 | const char *ret = mode; |
1374 | if (O_BINARY != O_TEXT) |
1375 | { |
1376 | ret = (const char *) tmode; |
1377 | while (*mode) |
1378 | { |
1379 | *tmode++ = *mode++; |
1380 | } |
1381 | *tmode++ = 'b'; |
a4d3c1d3 |
1382 | *tmode = '\0'; |
f5b9d040 |
1383 | } |
1384 | return ret; |
1385 | } |
9e353e3b |
1386 | |
1387 | PerlIO * |
06da4f11 |
1388 | PerlIOStdio_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
1389 | { |
adb71456 |
1390 | dTHX; |
9e353e3b |
1391 | PerlIO *f = NULL; |
c7fc522f |
1392 | int init = 0; |
f5b9d040 |
1393 | char tmode[8]; |
c7fc522f |
1394 | if (*mode == 'I') |
1395 | { |
1396 | init = 1; |
1397 | mode++; |
1398 | } |
9e353e3b |
1399 | if (fd >= 0) |
1400 | { |
c7fc522f |
1401 | FILE *stdio = NULL; |
1402 | if (init) |
1403 | { |
1404 | switch(fd) |
1405 | { |
1406 | case 0: |
eaf8b698 |
1407 | stdio = PerlSIO_stdin; |
c7fc522f |
1408 | break; |
1409 | case 1: |
eaf8b698 |
1410 | stdio = PerlSIO_stdout; |
c7fc522f |
1411 | break; |
1412 | case 2: |
eaf8b698 |
1413 | stdio = PerlSIO_stderr; |
c7fc522f |
1414 | break; |
1415 | } |
1416 | } |
1417 | else |
f5b9d040 |
1418 | { |
eaf8b698 |
1419 | stdio = PerlSIO_fdopen(fd,mode = PerlIOStdio_mode(mode,tmode)); |
f5b9d040 |
1420 | } |
9e353e3b |
1421 | if (stdio) |
1422 | { |
5f1a76d0 |
1423 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(aTHX),self,mode),PerlIOStdio); |
9e353e3b |
1424 | s->stdio = stdio; |
1425 | } |
1426 | } |
1427 | return f; |
1428 | } |
1429 | |
1430 | #undef PerlIO_importFILE |
1431 | PerlIO * |
1432 | PerlIO_importFILE(FILE *stdio, int fl) |
1433 | { |
5f1a76d0 |
1434 | dTHX; |
9e353e3b |
1435 | PerlIO *f = NULL; |
1436 | if (stdio) |
1437 | { |
5f1a76d0 |
1438 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(aTHX),&PerlIO_stdio,"r+"),PerlIOStdio); |
9e353e3b |
1439 | s->stdio = stdio; |
1440 | } |
1441 | return f; |
1442 | } |
1443 | |
1444 | PerlIO * |
06da4f11 |
1445 | PerlIOStdio_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
1446 | { |
adb71456 |
1447 | dTHX; |
9e353e3b |
1448 | PerlIO *f = NULL; |
eaf8b698 |
1449 | FILE *stdio = PerlSIO_fopen(path,mode); |
9e353e3b |
1450 | if (stdio) |
1451 | { |
f5b9d040 |
1452 | char tmode[8]; |
5f1a76d0 |
1453 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(aTHX), self, |
f5b9d040 |
1454 | (mode = PerlIOStdio_mode(mode,tmode))), |
1455 | PerlIOStdio); |
9e353e3b |
1456 | s->stdio = stdio; |
1457 | } |
1458 | return f; |
760ac839 |
1459 | } |
1460 | |
6f9d8c32 |
1461 | int |
9e353e3b |
1462 | PerlIOStdio_reopen(const char *path, const char *mode, PerlIO *f) |
1463 | { |
adb71456 |
1464 | dTHX; |
9e353e3b |
1465 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); |
f5b9d040 |
1466 | char tmode[8]; |
eaf8b698 |
1467 | FILE *stdio = PerlSIO_freopen(path,(mode = PerlIOStdio_mode(mode,tmode)),s->stdio); |
9e353e3b |
1468 | if (!s->stdio) |
1469 | return -1; |
1470 | s->stdio = stdio; |
1471 | return 0; |
1472 | } |
1473 | |
1474 | SSize_t |
1475 | PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count) |
1476 | { |
adb71456 |
1477 | dTHX; |
9e353e3b |
1478 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
c7fc522f |
1479 | SSize_t got = 0; |
9e353e3b |
1480 | if (count == 1) |
1481 | { |
1482 | STDCHAR *buf = (STDCHAR *) vbuf; |
1483 | /* Perl is expecting PerlIO_getc() to fill the buffer |
1484 | * Linux's stdio does not do that for fread() |
1485 | */ |
eaf8b698 |
1486 | int ch = PerlSIO_fgetc(s); |
9e353e3b |
1487 | if (ch != EOF) |
1488 | { |
1489 | *buf = ch; |
c7fc522f |
1490 | got = 1; |
9e353e3b |
1491 | } |
9e353e3b |
1492 | } |
c7fc522f |
1493 | else |
eaf8b698 |
1494 | got = PerlSIO_fread(vbuf,1,count,s); |
c7fc522f |
1495 | return got; |
9e353e3b |
1496 | } |
1497 | |
1498 | SSize_t |
1499 | PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count) |
1500 | { |
adb71456 |
1501 | dTHX; |
9e353e3b |
1502 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
1503 | STDCHAR *buf = ((STDCHAR *)vbuf)+count-1; |
1504 | SSize_t unread = 0; |
1505 | while (count > 0) |
1506 | { |
1507 | int ch = *buf-- & 0xff; |
eaf8b698 |
1508 | if (PerlSIO_ungetc(ch,s) != ch) |
9e353e3b |
1509 | break; |
1510 | unread++; |
1511 | count--; |
1512 | } |
1513 | return unread; |
1514 | } |
1515 | |
1516 | SSize_t |
1517 | PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count) |
1518 | { |
adb71456 |
1519 | dTHX; |
eaf8b698 |
1520 | return PerlSIO_fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b |
1521 | } |
1522 | |
1523 | IV |
1524 | PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence) |
1525 | { |
adb71456 |
1526 | dTHX; |
c7fc522f |
1527 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 |
1528 | return PerlSIO_fseek(stdio,offset,whence); |
9e353e3b |
1529 | } |
1530 | |
1531 | Off_t |
1532 | PerlIOStdio_tell(PerlIO *f) |
1533 | { |
adb71456 |
1534 | dTHX; |
c7fc522f |
1535 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 |
1536 | return PerlSIO_ftell(stdio); |
9e353e3b |
1537 | } |
1538 | |
1539 | IV |
1540 | PerlIOStdio_close(PerlIO *f) |
1541 | { |
adb71456 |
1542 | dTHX; |
8e4bc33b |
1543 | #ifdef HAS_SOCKET |
cf829ab0 |
1544 | int optval, optlen = sizeof(int); |
8e4bc33b |
1545 | #endif |
3789aae2 |
1546 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
cf829ab0 |
1547 | return( |
8e4bc33b |
1548 | #ifdef HAS_SOCKET |
a4d3c1d3 |
1549 | (getsockopt(PerlIO_fileno(f), SOL_SOCKET, SO_TYPE, (char *)&optval, &optlen) < 0) ? |
eaf8b698 |
1550 | PerlSIO_fclose(stdio) : |
8e4bc33b |
1551 | close(PerlIO_fileno(f)) |
1552 | #else |
1553 | PerlSIO_fclose(stdio) |
1554 | #endif |
1555 | ); |
1556 | |
9e353e3b |
1557 | } |
1558 | |
1559 | IV |
1560 | PerlIOStdio_flush(PerlIO *f) |
1561 | { |
adb71456 |
1562 | dTHX; |
9e353e3b |
1563 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
88b61e10 |
1564 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) |
1565 | { |
eaf8b698 |
1566 | return PerlSIO_fflush(stdio); |
88b61e10 |
1567 | } |
1568 | else |
1569 | { |
1570 | #if 0 |
1571 | /* FIXME: This discards ungetc() and pre-read stuff which is |
1572 | not right if this is just a "sync" from a layer above |
1573 | Suspect right design is to do _this_ but not have layer above |
1574 | flush this layer read-to-read |
1575 | */ |
1576 | /* Not writeable - sync by attempting a seek */ |
1577 | int err = errno; |
eaf8b698 |
1578 | if (PerlSIO_fseek(stdio,(Off_t) 0, SEEK_CUR) != 0) |
88b61e10 |
1579 | errno = err; |
1580 | #endif |
1581 | } |
1582 | return 0; |
9e353e3b |
1583 | } |
1584 | |
1585 | IV |
06da4f11 |
1586 | PerlIOStdio_fill(PerlIO *f) |
1587 | { |
adb71456 |
1588 | dTHX; |
06da4f11 |
1589 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1590 | int c; |
3789aae2 |
1591 | /* fflush()ing read-only streams can cause trouble on some stdio-s */ |
1592 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
1593 | { |
eaf8b698 |
1594 | if (PerlSIO_fflush(stdio) != 0) |
3789aae2 |
1595 | return EOF; |
1596 | } |
eaf8b698 |
1597 | c = PerlSIO_fgetc(stdio); |
1598 | if (c == EOF || PerlSIO_ungetc(c,stdio) != c) |
06da4f11 |
1599 | return EOF; |
1600 | return 0; |
1601 | } |
1602 | |
1603 | IV |
9e353e3b |
1604 | PerlIOStdio_eof(PerlIO *f) |
1605 | { |
adb71456 |
1606 | dTHX; |
eaf8b698 |
1607 | return PerlSIO_feof(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b |
1608 | } |
1609 | |
1610 | IV |
1611 | PerlIOStdio_error(PerlIO *f) |
1612 | { |
adb71456 |
1613 | dTHX; |
eaf8b698 |
1614 | return PerlSIO_ferror(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b |
1615 | } |
1616 | |
1617 | void |
1618 | PerlIOStdio_clearerr(PerlIO *f) |
1619 | { |
adb71456 |
1620 | dTHX; |
eaf8b698 |
1621 | PerlSIO_clearerr(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b |
1622 | } |
1623 | |
1624 | void |
1625 | PerlIOStdio_setlinebuf(PerlIO *f) |
1626 | { |
adb71456 |
1627 | dTHX; |
9e353e3b |
1628 | #ifdef HAS_SETLINEBUF |
eaf8b698 |
1629 | PerlSIO_setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio); |
9e353e3b |
1630 | #else |
eaf8b698 |
1631 | PerlSIO_setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0); |
9e353e3b |
1632 | #endif |
1633 | } |
1634 | |
1635 | #ifdef FILE_base |
1636 | STDCHAR * |
1637 | PerlIOStdio_get_base(PerlIO *f) |
1638 | { |
adb71456 |
1639 | dTHX; |
9e353e3b |
1640 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 |
1641 | return PerlSIO_get_base(stdio); |
9e353e3b |
1642 | } |
1643 | |
1644 | Size_t |
1645 | PerlIOStdio_get_bufsiz(PerlIO *f) |
1646 | { |
adb71456 |
1647 | dTHX; |
9e353e3b |
1648 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 |
1649 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b |
1650 | } |
1651 | #endif |
1652 | |
1653 | #ifdef USE_STDIO_PTR |
1654 | STDCHAR * |
1655 | PerlIOStdio_get_ptr(PerlIO *f) |
1656 | { |
adb71456 |
1657 | dTHX; |
9e353e3b |
1658 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 |
1659 | return PerlSIO_get_ptr(stdio); |
9e353e3b |
1660 | } |
1661 | |
1662 | SSize_t |
1663 | PerlIOStdio_get_cnt(PerlIO *f) |
1664 | { |
adb71456 |
1665 | dTHX; |
9e353e3b |
1666 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
eaf8b698 |
1667 | return PerlSIO_get_cnt(stdio); |
9e353e3b |
1668 | } |
1669 | |
1670 | void |
1671 | PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt) |
1672 | { |
adb71456 |
1673 | dTHX; |
9e353e3b |
1674 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1675 | if (ptr != NULL) |
1676 | { |
1677 | #ifdef STDIO_PTR_LVALUE |
eaf8b698 |
1678 | PerlSIO_set_ptr(stdio,ptr); |
9e353e3b |
1679 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
eaf8b698 |
1680 | if (PerlSIO_get_cnt(stdio) != (cnt)) |
9e353e3b |
1681 | { |
1682 | dTHX; |
eaf8b698 |
1683 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
9e353e3b |
1684 | } |
1685 | #endif |
1686 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) |
1687 | /* Setting ptr _does_ change cnt - we are done */ |
1688 | return; |
1689 | #endif |
1690 | #else /* STDIO_PTR_LVALUE */ |
eaf8b698 |
1691 | PerlProc_abort(); |
9e353e3b |
1692 | #endif /* STDIO_PTR_LVALUE */ |
1693 | } |
1694 | /* Now (or only) set cnt */ |
1695 | #ifdef STDIO_CNT_LVALUE |
eaf8b698 |
1696 | PerlSIO_set_cnt(stdio,cnt); |
9e353e3b |
1697 | #else /* STDIO_CNT_LVALUE */ |
1698 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
eaf8b698 |
1699 | PerlSIO_set_ptr(stdio,PerlSIO_get_ptr(stdio)+(PerlSIO_get_cnt(stdio)-cnt)); |
9e353e3b |
1700 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
eaf8b698 |
1701 | PerlProc_abort(); |
9e353e3b |
1702 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
1703 | #endif /* STDIO_CNT_LVALUE */ |
1704 | } |
1705 | |
1706 | #endif |
1707 | |
1708 | PerlIO_funcs PerlIO_stdio = { |
1709 | "stdio", |
1710 | sizeof(PerlIOStdio), |
f5b9d040 |
1711 | PERLIO_K_BUFFERED, |
9e353e3b |
1712 | PerlIOStdio_fileno, |
1713 | PerlIOStdio_fdopen, |
1714 | PerlIOStdio_open, |
1715 | PerlIOStdio_reopen, |
06da4f11 |
1716 | PerlIOBase_pushed, |
1717 | PerlIOBase_noop_ok, |
9e353e3b |
1718 | PerlIOStdio_read, |
1719 | PerlIOStdio_unread, |
1720 | PerlIOStdio_write, |
1721 | PerlIOStdio_seek, |
1722 | PerlIOStdio_tell, |
1723 | PerlIOStdio_close, |
1724 | PerlIOStdio_flush, |
06da4f11 |
1725 | PerlIOStdio_fill, |
9e353e3b |
1726 | PerlIOStdio_eof, |
1727 | PerlIOStdio_error, |
1728 | PerlIOStdio_clearerr, |
1729 | PerlIOStdio_setlinebuf, |
1730 | #ifdef FILE_base |
1731 | PerlIOStdio_get_base, |
1732 | PerlIOStdio_get_bufsiz, |
1733 | #else |
1734 | NULL, |
1735 | NULL, |
1736 | #endif |
1737 | #ifdef USE_STDIO_PTR |
1738 | PerlIOStdio_get_ptr, |
1739 | PerlIOStdio_get_cnt, |
0eb1d8a4 |
1740 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) |
9e353e3b |
1741 | PerlIOStdio_set_ptrcnt |
1742 | #else /* STDIO_PTR_LVALUE */ |
1743 | NULL |
1744 | #endif /* STDIO_PTR_LVALUE */ |
1745 | #else /* USE_STDIO_PTR */ |
1746 | NULL, |
1747 | NULL, |
1748 | NULL |
1749 | #endif /* USE_STDIO_PTR */ |
1750 | }; |
1751 | |
1752 | #undef PerlIO_exportFILE |
1753 | FILE * |
1754 | PerlIO_exportFILE(PerlIO *f, int fl) |
1755 | { |
1756 | PerlIO_flush(f); |
1757 | /* Should really push stdio discipline when we have them */ |
1758 | return fdopen(PerlIO_fileno(f),"r+"); |
1759 | } |
1760 | |
1761 | #undef PerlIO_findFILE |
1762 | FILE * |
1763 | PerlIO_findFILE(PerlIO *f) |
1764 | { |
1765 | return PerlIO_exportFILE(f,0); |
1766 | } |
1767 | |
1768 | #undef PerlIO_releaseFILE |
1769 | void |
1770 | PerlIO_releaseFILE(PerlIO *p, FILE *f) |
1771 | { |
1772 | } |
1773 | |
1774 | /*--------------------------------------------------------------------------------------*/ |
1775 | /* perlio buffer layer */ |
1776 | |
5e2ab84b |
1777 | IV |
1778 | PerlIOBuf_pushed(PerlIO *f, const char *mode) |
1779 | { |
1780 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1781 | b->posn = PerlIO_tell(PerlIONext(f)); |
1782 | return PerlIOBase_pushed(f,mode); |
1783 | } |
1784 | |
9e353e3b |
1785 | PerlIO * |
06da4f11 |
1786 | PerlIOBuf_fdopen(PerlIO_funcs *self, int fd, const char *mode) |
9e353e3b |
1787 | { |
adb71456 |
1788 | dTHX; |
9e353e3b |
1789 | PerlIO_funcs *tab = PerlIO_default_btm(); |
c7fc522f |
1790 | int init = 0; |
1791 | PerlIO *f; |
1792 | if (*mode == 'I') |
1793 | { |
1794 | init = 1; |
1795 | mode++; |
a77df51f |
1796 | } |
10cbe18a |
1797 | #if O_BINARY != O_TEXT |
a4d3c1d3 |
1798 | /* do something about failing setmode()? --jhi */ |
1799 | PerlLIO_setmode(fd, O_BINARY); |
10cbe18a |
1800 | #endif |
06da4f11 |
1801 | f = (*tab->Fdopen)(tab,fd,mode); |
6f9d8c32 |
1802 | if (f) |
1803 | { |
f5b9d040 |
1804 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,mode),PerlIOBuf); |
f5b9d040 |
1805 | if (init && fd == 2) |
c7fc522f |
1806 | { |
f5b9d040 |
1807 | /* Initial stderr is unbuffered */ |
1808 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; |
a4d3c1d3 |
1809 | } |
5e2ab84b |
1810 | #if 0 |
4659c93f |
1811 | PerlIO_debug("PerlIOBuf_fdopen %s f=%p fd=%d m=%s fl=%08"UVxf"\n", |
f5b9d040 |
1812 | self->name,f,fd,mode,PerlIOBase(f)->flags); |
5e2ab84b |
1813 | #endif |
6f9d8c32 |
1814 | } |
9e353e3b |
1815 | return f; |
760ac839 |
1816 | } |
1817 | |
9e353e3b |
1818 | PerlIO * |
06da4f11 |
1819 | PerlIOBuf_open(PerlIO_funcs *self, const char *path, const char *mode) |
8c86a920 |
1820 | { |
9e353e3b |
1821 | PerlIO_funcs *tab = PerlIO_default_btm(); |
06da4f11 |
1822 | PerlIO *f = (*tab->Open)(tab,path,mode); |
9e353e3b |
1823 | if (f) |
1824 | { |
5e2ab84b |
1825 | PerlIO_push(f,self,mode); |
9e353e3b |
1826 | } |
1827 | return f; |
1828 | } |
1829 | |
1830 | int |
c3d7c7c9 |
1831 | PerlIOBuf_reopen(const char *path, const char *mode, PerlIO *f) |
9e353e3b |
1832 | { |
c3d7c7c9 |
1833 | PerlIO *next = PerlIONext(f); |
1834 | int code = (*PerlIOBase(next)->tab->Reopen)(path,mode,next); |
1835 | if (code = 0) |
1836 | code = (*PerlIOBase(f)->tab->Pushed)(f,mode); |
c3d7c7c9 |
1837 | return code; |
9e353e3b |
1838 | } |
1839 | |
9e353e3b |
1840 | /* This "flush" is akin to sfio's sync in that it handles files in either |
1841 | read or write state |
1842 | */ |
1843 | IV |
1844 | PerlIOBuf_flush(PerlIO *f) |
6f9d8c32 |
1845 | { |
9e353e3b |
1846 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1847 | int code = 0; |
1848 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1849 | { |
1850 | /* write() the buffer */ |
1851 | STDCHAR *p = b->buf; |
1852 | int count; |
3789aae2 |
1853 | PerlIO *n = PerlIONext(f); |
9e353e3b |
1854 | while (p < b->ptr) |
1855 | { |
3789aae2 |
1856 | count = PerlIO_write(n,p,b->ptr - p); |
9e353e3b |
1857 | if (count > 0) |
1858 | { |
1859 | p += count; |
1860 | } |
3789aae2 |
1861 | else if (count < 0 || PerlIO_error(n)) |
9e353e3b |
1862 | { |
1863 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1864 | code = -1; |
1865 | break; |
1866 | } |
1867 | } |
1868 | b->posn += (p - b->buf); |
1869 | } |
1870 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
6f9d8c32 |
1871 | { |
9e353e3b |
1872 | /* Note position change */ |
1873 | b->posn += (b->ptr - b->buf); |
1874 | if (b->ptr < b->end) |
1875 | { |
1876 | /* We did not consume all of it */ |
1877 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0) |
1878 | { |
1879 | b->posn = PerlIO_tell(PerlIONext(f)); |
1880 | } |
1881 | } |
6f9d8c32 |
1882 | } |
9e353e3b |
1883 | b->ptr = b->end = b->buf; |
1884 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
88b61e10 |
1885 | /* FIXME: Is this right for read case ? */ |
9e353e3b |
1886 | if (PerlIO_flush(PerlIONext(f)) != 0) |
1887 | code = -1; |
1888 | return code; |
6f9d8c32 |
1889 | } |
1890 | |
06da4f11 |
1891 | IV |
1892 | PerlIOBuf_fill(PerlIO *f) |
1893 | { |
1894 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
88b61e10 |
1895 | PerlIO *n = PerlIONext(f); |
06da4f11 |
1896 | SSize_t avail; |
88b61e10 |
1897 | /* FIXME: doing the down-stream flush is a bad idea if it causes |
1898 | pre-read data in stdio buffer to be discarded |
1899 | but this is too simplistic - as it skips _our_ hosekeeping |
1900 | and breaks tell tests. |
1901 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
1902 | { |
1903 | } |
1904 | */ |
06da4f11 |
1905 | if (PerlIO_flush(f) != 0) |
1906 | return -1; |
88b61e10 |
1907 | |
06da4f11 |
1908 | b->ptr = b->end = b->buf; |
88b61e10 |
1909 | if (PerlIO_fast_gets(n)) |
1910 | { |
1911 | /* Layer below is also buffered |
1912 | * We do _NOT_ want to call its ->Read() because that will loop |
1913 | * till it gets what we asked for which may hang on a pipe etc. |
1914 | * Instead take anything it has to hand, or ask it to fill _once_. |
1915 | */ |
1916 | avail = PerlIO_get_cnt(n); |
1917 | if (avail <= 0) |
1918 | { |
1919 | avail = PerlIO_fill(n); |
1920 | if (avail == 0) |
1921 | avail = PerlIO_get_cnt(n); |
1922 | else |
1923 | { |
1924 | if (!PerlIO_error(n) && PerlIO_eof(n)) |
1925 | avail = 0; |
1926 | } |
1927 | } |
1928 | if (avail > 0) |
1929 | { |
1930 | STDCHAR *ptr = PerlIO_get_ptr(n); |
1931 | SSize_t cnt = avail; |
1932 | if (avail > b->bufsiz) |
1933 | avail = b->bufsiz; |
1934 | Copy(ptr,b->buf,avail,STDCHAR); |
1935 | PerlIO_set_ptrcnt(n,ptr+avail,cnt-avail); |
1936 | } |
1937 | } |
1938 | else |
1939 | { |
1940 | avail = PerlIO_read(n,b->ptr,b->bufsiz); |
1941 | } |
06da4f11 |
1942 | if (avail <= 0) |
1943 | { |
1944 | if (avail == 0) |
1945 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
1946 | else |
1947 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1948 | return -1; |
1949 | } |
1950 | b->end = b->buf+avail; |
1951 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
1952 | return 0; |
1953 | } |
1954 | |
6f9d8c32 |
1955 | SSize_t |
9e353e3b |
1956 | PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
1957 | { |
99efab12 |
1958 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1959 | STDCHAR *buf = (STDCHAR *) vbuf; |
6f9d8c32 |
1960 | if (f) |
1961 | { |
9e353e3b |
1962 | if (!b->ptr) |
06da4f11 |
1963 | PerlIO_get_base(f); |
9e353e3b |
1964 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
f89522bf |
1965 | return 0; |
6f9d8c32 |
1966 | while (count > 0) |
1967 | { |
99efab12 |
1968 | SSize_t avail = PerlIO_get_cnt(f); |
60382766 |
1969 | SSize_t take = (count < avail) ? count : avail; |
99efab12 |
1970 | if (take > 0) |
6f9d8c32 |
1971 | { |
99efab12 |
1972 | STDCHAR *ptr = PerlIO_get_ptr(f); |
1973 | Copy(ptr,buf,take,STDCHAR); |
1974 | PerlIO_set_ptrcnt(f,ptr+take,(avail -= take)); |
1975 | count -= take; |
1976 | buf += take; |
6f9d8c32 |
1977 | } |
99efab12 |
1978 | if (count > 0 && avail <= 0) |
6f9d8c32 |
1979 | { |
06da4f11 |
1980 | if (PerlIO_fill(f) != 0) |
1981 | break; |
6f9d8c32 |
1982 | } |
1983 | } |
99efab12 |
1984 | return (buf - (STDCHAR *) vbuf); |
6f9d8c32 |
1985 | } |
1986 | return 0; |
1987 | } |
1988 | |
9e353e3b |
1989 | SSize_t |
1990 | PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
1991 | { |
9e353e3b |
1992 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
1993 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1994 | SSize_t unread = 0; |
1995 | SSize_t avail; |
9e353e3b |
1996 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1997 | PerlIO_flush(f); |
06da4f11 |
1998 | if (!b->buf) |
1999 | PerlIO_get_base(f); |
9e353e3b |
2000 | if (b->buf) |
2001 | { |
2002 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
2003 | { |
2004 | avail = (b->ptr - b->buf); |
9e353e3b |
2005 | } |
2006 | else |
2007 | { |
2008 | avail = b->bufsiz; |
5e2ab84b |
2009 | b->end = b->buf + avail; |
2010 | b->ptr = b->end; |
2011 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
2012 | b->posn -= b->bufsiz; |
9e353e3b |
2013 | } |
5e2ab84b |
2014 | if (avail > (SSize_t) count) |
2015 | avail = count; |
9e353e3b |
2016 | if (avail > 0) |
2017 | { |
5e2ab84b |
2018 | b->ptr -= avail; |
9e353e3b |
2019 | buf -= avail; |
2020 | if (buf != b->ptr) |
2021 | { |
88b61e10 |
2022 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b |
2023 | } |
2024 | count -= avail; |
2025 | unread += avail; |
2026 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
2027 | } |
2028 | } |
2029 | return unread; |
760ac839 |
2030 | } |
2031 | |
9e353e3b |
2032 | SSize_t |
2033 | PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
2034 | { |
9e353e3b |
2035 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2036 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
2037 | Size_t written = 0; |
2038 | if (!b->buf) |
06da4f11 |
2039 | PerlIO_get_base(f); |
9e353e3b |
2040 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
2041 | return 0; |
2042 | while (count > 0) |
2043 | { |
2044 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); |
2045 | if ((SSize_t) count < avail) |
2046 | avail = count; |
2047 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
2048 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) |
2049 | { |
2050 | while (avail > 0) |
2051 | { |
2052 | int ch = *buf++; |
2053 | *(b->ptr)++ = ch; |
2054 | count--; |
2055 | avail--; |
2056 | written++; |
2057 | if (ch == '\n') |
2058 | { |
2059 | PerlIO_flush(f); |
2060 | break; |
2061 | } |
2062 | } |
2063 | } |
2064 | else |
2065 | { |
2066 | if (avail) |
2067 | { |
88b61e10 |
2068 | Copy(buf,b->ptr,avail,STDCHAR); |
9e353e3b |
2069 | count -= avail; |
2070 | buf += avail; |
2071 | written += avail; |
2072 | b->ptr += avail; |
2073 | } |
2074 | } |
2075 | if (b->ptr >= (b->buf + b->bufsiz)) |
2076 | PerlIO_flush(f); |
2077 | } |
f5b9d040 |
2078 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) |
2079 | PerlIO_flush(f); |
9e353e3b |
2080 | return written; |
2081 | } |
2082 | |
2083 | IV |
2084 | PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence) |
2085 | { |
5e2ab84b |
2086 | IV code; |
2087 | if ((code = PerlIO_flush(f)) == 0) |
9e353e3b |
2088 | { |
5e2ab84b |
2089 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
9e353e3b |
2090 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2091 | code = PerlIO_seek(PerlIONext(f),offset,whence); |
2092 | if (code == 0) |
2093 | { |
2094 | b->posn = PerlIO_tell(PerlIONext(f)); |
2095 | } |
2096 | } |
2097 | return code; |
2098 | } |
2099 | |
2100 | Off_t |
2101 | PerlIOBuf_tell(PerlIO *f) |
2102 | { |
2103 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2104 | Off_t posn = b->posn; |
2105 | if (b->buf) |
2106 | posn += (b->ptr - b->buf); |
2107 | return posn; |
2108 | } |
2109 | |
2110 | IV |
2111 | PerlIOBuf_close(PerlIO *f) |
2112 | { |
5f1a76d0 |
2113 | dTHX; |
9e353e3b |
2114 | IV code = PerlIOBase_close(f); |
2115 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2116 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) |
6f9d8c32 |
2117 | { |
5f1a76d0 |
2118 | PerlMemShared_free(b->buf); |
6f9d8c32 |
2119 | } |
9e353e3b |
2120 | b->buf = NULL; |
2121 | b->ptr = b->end = b->buf; |
2122 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
2123 | return code; |
760ac839 |
2124 | } |
2125 | |
760ac839 |
2126 | void |
9e353e3b |
2127 | PerlIOBuf_setlinebuf(PerlIO *f) |
760ac839 |
2128 | { |
6f9d8c32 |
2129 | if (f) |
2130 | { |
9e353e3b |
2131 | PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF; |
6f9d8c32 |
2132 | } |
760ac839 |
2133 | } |
2134 | |
9e353e3b |
2135 | STDCHAR * |
2136 | PerlIOBuf_get_ptr(PerlIO *f) |
2137 | { |
2138 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2139 | if (!b->buf) |
06da4f11 |
2140 | PerlIO_get_base(f); |
9e353e3b |
2141 | return b->ptr; |
2142 | } |
2143 | |
05d1247b |
2144 | SSize_t |
9e353e3b |
2145 | PerlIOBuf_get_cnt(PerlIO *f) |
2146 | { |
2147 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2148 | if (!b->buf) |
06da4f11 |
2149 | PerlIO_get_base(f); |
9e353e3b |
2150 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
2151 | return (b->end - b->ptr); |
2152 | return 0; |
2153 | } |
2154 | |
2155 | STDCHAR * |
2156 | PerlIOBuf_get_base(PerlIO *f) |
2157 | { |
2158 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2159 | if (!b->buf) |
06da4f11 |
2160 | { |
5f1a76d0 |
2161 | dTHX; |
06da4f11 |
2162 | if (!b->bufsiz) |
2163 | b->bufsiz = 4096; |
5f1a76d0 |
2164 | b->buf = PerlMemShared_calloc(b->bufsiz,sizeof(STDCHAR)); |
06da4f11 |
2165 | if (!b->buf) |
2166 | { |
2167 | b->buf = (STDCHAR *)&b->oneword; |
2168 | b->bufsiz = sizeof(b->oneword); |
2169 | } |
2170 | b->ptr = b->buf; |
2171 | b->end = b->ptr; |
2172 | } |
9e353e3b |
2173 | return b->buf; |
2174 | } |
2175 | |
2176 | Size_t |
2177 | PerlIOBuf_bufsiz(PerlIO *f) |
2178 | { |
2179 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2180 | if (!b->buf) |
06da4f11 |
2181 | PerlIO_get_base(f); |
9e353e3b |
2182 | return (b->end - b->buf); |
2183 | } |
2184 | |
2185 | void |
05d1247b |
2186 | PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
9e353e3b |
2187 | { |
2188 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2189 | if (!b->buf) |
06da4f11 |
2190 | PerlIO_get_base(f); |
9e353e3b |
2191 | b->ptr = ptr; |
2192 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) |
6f9d8c32 |
2193 | { |
9e353e3b |
2194 | dTHX; |
2195 | assert(PerlIO_get_cnt(f) == cnt); |
2196 | assert(b->ptr >= b->buf); |
6f9d8c32 |
2197 | } |
9e353e3b |
2198 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 |
2199 | } |
2200 | |
9e353e3b |
2201 | PerlIO_funcs PerlIO_perlio = { |
2202 | "perlio", |
2203 | sizeof(PerlIOBuf), |
f5b9d040 |
2204 | PERLIO_K_BUFFERED, |
9e353e3b |
2205 | PerlIOBase_fileno, |
2206 | PerlIOBuf_fdopen, |
2207 | PerlIOBuf_open, |
c3d7c7c9 |
2208 | PerlIOBuf_reopen, |
5e2ab84b |
2209 | PerlIOBuf_pushed, |
06da4f11 |
2210 | PerlIOBase_noop_ok, |
9e353e3b |
2211 | PerlIOBuf_read, |
2212 | PerlIOBuf_unread, |
2213 | PerlIOBuf_write, |
2214 | PerlIOBuf_seek, |
2215 | PerlIOBuf_tell, |
2216 | PerlIOBuf_close, |
2217 | PerlIOBuf_flush, |
06da4f11 |
2218 | PerlIOBuf_fill, |
9e353e3b |
2219 | PerlIOBase_eof, |
2220 | PerlIOBase_error, |
2221 | PerlIOBase_clearerr, |
2222 | PerlIOBuf_setlinebuf, |
2223 | PerlIOBuf_get_base, |
2224 | PerlIOBuf_bufsiz, |
2225 | PerlIOBuf_get_ptr, |
2226 | PerlIOBuf_get_cnt, |
2227 | PerlIOBuf_set_ptrcnt, |
2228 | }; |
2229 | |
66ecd56b |
2230 | /*--------------------------------------------------------------------------------------*/ |
5e2ab84b |
2231 | /* Temp layer to hold unread chars when cannot do it any other way */ |
2232 | |
2233 | IV |
2234 | PerlIOPending_fill(PerlIO *f) |
2235 | { |
2236 | /* Should never happen */ |
2237 | PerlIO_flush(f); |
2238 | return 0; |
2239 | } |
2240 | |
2241 | IV |
2242 | PerlIOPending_close(PerlIO *f) |
2243 | { |
2244 | /* A tad tricky - flush pops us, then we close new top */ |
2245 | PerlIO_flush(f); |
2246 | return PerlIO_close(f); |
2247 | } |
2248 | |
2249 | IV |
2250 | PerlIOPending_seek(PerlIO *f, Off_t offset, int whence) |
2251 | { |
2252 | /* A tad tricky - flush pops us, then we seek new top */ |
2253 | PerlIO_flush(f); |
2254 | return PerlIO_seek(f,offset,whence); |
2255 | } |
2256 | |
2257 | |
2258 | IV |
2259 | PerlIOPending_flush(PerlIO *f) |
2260 | { |
2261 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2262 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) |
2263 | { |
5f1a76d0 |
2264 | dTHX; |
2265 | PerlMemShared_free(b->buf); |
5e2ab84b |
2266 | b->buf = NULL; |
2267 | } |
2268 | PerlIO_pop(f); |
2269 | return 0; |
2270 | } |
2271 | |
2272 | void |
2273 | PerlIOPending_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
2274 | { |
2275 | if (cnt <= 0) |
2276 | { |
2277 | PerlIO_flush(f); |
2278 | } |
2279 | else |
2280 | { |
2281 | PerlIOBuf_set_ptrcnt(f,ptr,cnt); |
2282 | } |
2283 | } |
2284 | |
2285 | IV |
2286 | PerlIOPending_pushed(PerlIO *f,const char *mode) |
2287 | { |
2288 | IV code = PerlIOBuf_pushed(f,mode); |
2289 | PerlIOl *l = PerlIOBase(f); |
2290 | /* Our PerlIO_fast_gets must match what we are pushed on, |
2291 | or sv_gets() etc. get muddled when it changes mid-string |
2292 | when we auto-pop. |
2293 | */ |
2294 | l->flags = (l->flags & ~PERLIO_F_FASTGETS) | |
2295 | (PerlIOBase(PerlIONext(f))->flags & PERLIO_F_FASTGETS); |
2296 | return code; |
2297 | } |
2298 | |
2299 | SSize_t |
2300 | PerlIOPending_read(PerlIO *f, void *vbuf, Size_t count) |
2301 | { |
2302 | SSize_t avail = PerlIO_get_cnt(f); |
2303 | SSize_t got = 0; |
2304 | if (count < avail) |
2305 | avail = count; |
2306 | if (avail > 0) |
2307 | got = PerlIOBuf_read(f,vbuf,avail); |
2308 | if (got < count) |
2309 | got += PerlIO_read(f,((STDCHAR *) vbuf)+got,count-got); |
2310 | return got; |
2311 | } |
2312 | |
2313 | |
2314 | PerlIO_funcs PerlIO_pending = { |
2315 | "pending", |
2316 | sizeof(PerlIOBuf), |
2317 | PERLIO_K_BUFFERED, |
2318 | PerlIOBase_fileno, |
2319 | NULL, |
2320 | NULL, |
2321 | NULL, |
2322 | PerlIOPending_pushed, |
2323 | PerlIOBase_noop_ok, |
2324 | PerlIOPending_read, |
2325 | PerlIOBuf_unread, |
2326 | PerlIOBuf_write, |
2327 | PerlIOPending_seek, |
2328 | PerlIOBuf_tell, |
2329 | PerlIOPending_close, |
2330 | PerlIOPending_flush, |
2331 | PerlIOPending_fill, |
2332 | PerlIOBase_eof, |
2333 | PerlIOBase_error, |
2334 | PerlIOBase_clearerr, |
2335 | PerlIOBuf_setlinebuf, |
2336 | PerlIOBuf_get_base, |
2337 | PerlIOBuf_bufsiz, |
2338 | PerlIOBuf_get_ptr, |
2339 | PerlIOBuf_get_cnt, |
2340 | PerlIOPending_set_ptrcnt, |
2341 | }; |
2342 | |
2343 | |
2344 | |
2345 | /*--------------------------------------------------------------------------------------*/ |
99efab12 |
2346 | /* crlf - translation |
2347 | On read translate CR,LF to "\n" we do this by overriding ptr/cnt entries |
60382766 |
2348 | to hand back a line at a time and keeping a record of which nl we "lied" about. |
99efab12 |
2349 | On write translate "\n" to CR,LF |
66ecd56b |
2350 | */ |
2351 | |
99efab12 |
2352 | typedef struct |
2353 | { |
2354 | PerlIOBuf base; /* PerlIOBuf stuff */ |
60382766 |
2355 | STDCHAR *nl; /* Position of crlf we "lied" about in the buffer */ |
99efab12 |
2356 | } PerlIOCrlf; |
2357 | |
f5b9d040 |
2358 | IV |
2359 | PerlIOCrlf_pushed(PerlIO *f, const char *mode) |
2360 | { |
2361 | IV code; |
2362 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; |
5e2ab84b |
2363 | code = PerlIOBuf_pushed(f,mode); |
2364 | #if 0 |
4659c93f |
2365 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08"UVxf"\n", |
f5b9d040 |
2366 | f,PerlIOBase(f)->tab->name,(mode) ? mode : "(Null)", |
a4d3c1d3 |
2367 | PerlIOBase(f)->flags); |
5e2ab84b |
2368 | #endif |
f5b9d040 |
2369 | return code; |
2370 | } |
2371 | |
2372 | |
99efab12 |
2373 | SSize_t |
2374 | PerlIOCrlf_unread(PerlIO *f, const void *vbuf, Size_t count) |
2375 | { |
60382766 |
2376 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
60382766 |
2377 | if (c->nl) |
2378 | { |
2379 | *(c->nl) = 0xd; |
2380 | c->nl = NULL; |
2381 | } |
f5b9d040 |
2382 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
2383 | return PerlIOBuf_unread(f,vbuf,count); |
2384 | else |
99efab12 |
2385 | { |
a4d3c1d3 |
2386 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
f5b9d040 |
2387 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2388 | SSize_t unread = 0; |
2389 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
2390 | PerlIO_flush(f); |
2391 | if (!b->buf) |
2392 | PerlIO_get_base(f); |
2393 | if (b->buf) |
99efab12 |
2394 | { |
f5b9d040 |
2395 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
99efab12 |
2396 | { |
f5b9d040 |
2397 | b->end = b->ptr = b->buf + b->bufsiz; |
2398 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
5e2ab84b |
2399 | b->posn -= b->bufsiz; |
f5b9d040 |
2400 | } |
2401 | while (count > 0 && b->ptr > b->buf) |
2402 | { |
2403 | int ch = *--buf; |
2404 | if (ch == '\n') |
99efab12 |
2405 | { |
f5b9d040 |
2406 | if (b->ptr - 2 >= b->buf) |
2407 | { |
2408 | *--(b->ptr) = 0xa; |
2409 | *--(b->ptr) = 0xd; |
2410 | unread++; |
2411 | count--; |
2412 | } |
2413 | else |
2414 | { |
2415 | buf++; |
2416 | break; |
2417 | } |
99efab12 |
2418 | } |
2419 | else |
2420 | { |
f5b9d040 |
2421 | *--(b->ptr) = ch; |
2422 | unread++; |
2423 | count--; |
99efab12 |
2424 | } |
2425 | } |
99efab12 |
2426 | } |
f5b9d040 |
2427 | return unread; |
99efab12 |
2428 | } |
99efab12 |
2429 | } |
2430 | |
2431 | SSize_t |
2432 | PerlIOCrlf_get_cnt(PerlIO *f) |
2433 | { |
2434 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2435 | if (!b->buf) |
2436 | PerlIO_get_base(f); |
2437 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
2438 | { |
2439 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
f5b9d040 |
2440 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && !c->nl) |
99efab12 |
2441 | { |
2442 | STDCHAR *nl = b->ptr; |
60382766 |
2443 | scan: |
99efab12 |
2444 | while (nl < b->end && *nl != 0xd) |
2445 | nl++; |
2446 | if (nl < b->end && *nl == 0xd) |
2447 | { |
60382766 |
2448 | test: |
99efab12 |
2449 | if (nl+1 < b->end) |
2450 | { |
2451 | if (nl[1] == 0xa) |
2452 | { |
2453 | *nl = '\n'; |
60382766 |
2454 | c->nl = nl; |
99efab12 |
2455 | } |
60382766 |
2456 | else |
99efab12 |
2457 | { |
2458 | /* Not CR,LF but just CR */ |
2459 | nl++; |
60382766 |
2460 | goto scan; |
99efab12 |
2461 | } |
2462 | } |
2463 | else |
2464 | { |
60382766 |
2465 | /* Blast - found CR as last char in buffer */ |
99efab12 |
2466 | if (b->ptr < nl) |
2467 | { |
2468 | /* They may not care, defer work as long as possible */ |
60382766 |
2469 | return (nl - b->ptr); |
99efab12 |
2470 | } |
2471 | else |
2472 | { |
2473 | int code; |
2474 | dTHX; |
99efab12 |
2475 | b->ptr++; /* say we have read it as far as flush() is concerned */ |
2476 | b->buf++; /* Leave space an front of buffer */ |
2477 | b->bufsiz--; /* Buffer is thus smaller */ |
2478 | code = PerlIO_fill(f); /* Fetch some more */ |
2479 | b->bufsiz++; /* Restore size for next time */ |
2480 | b->buf--; /* Point at space */ |
2481 | b->ptr = nl = b->buf; /* Which is what we hand off */ |
2482 | b->posn--; /* Buffer starts here */ |
2483 | *nl = 0xd; /* Fill in the CR */ |
60382766 |
2484 | if (code == 0) |
99efab12 |
2485 | goto test; /* fill() call worked */ |
2486 | /* CR at EOF - just fall through */ |
2487 | } |
2488 | } |
60382766 |
2489 | } |
2490 | } |
99efab12 |
2491 | return (((c->nl) ? (c->nl+1) : b->end) - b->ptr); |
2492 | } |
2493 | return 0; |
2494 | } |
2495 | |
2496 | void |
2497 | PerlIOCrlf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
2498 | { |
2499 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2500 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
f5b9d040 |
2501 | IV flags = PerlIOBase(f)->flags; |
99efab12 |
2502 | if (!b->buf) |
2503 | PerlIO_get_base(f); |
2504 | if (!ptr) |
60382766 |
2505 | { |
63dbdb06 |
2506 | if (c->nl) |
2507 | ptr = c->nl+1; |
2508 | else |
2509 | { |
2510 | ptr = b->end; |
f5b9d040 |
2511 | if ((flags & PERLIO_F_CRLF) && ptr > b->buf && ptr[-1] == 0xd) |
63dbdb06 |
2512 | ptr--; |
2513 | } |
2514 | ptr -= cnt; |
60382766 |
2515 | } |
2516 | else |
2517 | { |
63dbdb06 |
2518 | /* Test code - delete when it works ... */ |
2519 | STDCHAR *chk; |
2520 | if (c->nl) |
2521 | chk = c->nl+1; |
2522 | else |
2523 | { |
2524 | chk = b->end; |
f5b9d040 |
2525 | if ((flags & PERLIO_F_CRLF) && chk > b->buf && chk[-1] == 0xd) |
63dbdb06 |
2526 | chk--; |
2527 | } |
2528 | chk -= cnt; |
a4d3c1d3 |
2529 | |
63dbdb06 |
2530 | if (ptr != chk) |
2531 | { |
2532 | dTHX; |
4659c93f |
2533 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08"UVxf" nl=%p e=%p for %d", |
a4d3c1d3 |
2534 | ptr, chk, flags, c->nl, b->end, cnt); |
63dbdb06 |
2535 | } |
60382766 |
2536 | } |
99efab12 |
2537 | if (c->nl) |
2538 | { |
2539 | if (ptr > c->nl) |
2540 | { |
2541 | /* They have taken what we lied about */ |
2542 | *(c->nl) = 0xd; |
2543 | c->nl = NULL; |
2544 | ptr++; |
60382766 |
2545 | } |
99efab12 |
2546 | } |
2547 | b->ptr = ptr; |
2548 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
2549 | } |
2550 | |
2551 | SSize_t |
2552 | PerlIOCrlf_write(PerlIO *f, const void *vbuf, Size_t count) |
2553 | { |
f5b9d040 |
2554 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
2555 | return PerlIOBuf_write(f,vbuf,count); |
2556 | else |
99efab12 |
2557 | { |
a4d3c1d3 |
2558 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
f5b9d040 |
2559 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
2560 | const STDCHAR *ebuf = buf+count; |
2561 | if (!b->buf) |
2562 | PerlIO_get_base(f); |
2563 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
2564 | return 0; |
2565 | while (buf < ebuf) |
99efab12 |
2566 | { |
f5b9d040 |
2567 | STDCHAR *eptr = b->buf+b->bufsiz; |
2568 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
2569 | while (buf < ebuf && b->ptr < eptr) |
99efab12 |
2570 | { |
f5b9d040 |
2571 | if (*buf == '\n') |
60382766 |
2572 | { |
f5b9d040 |
2573 | if ((b->ptr + 2) > eptr) |
60382766 |
2574 | { |
f5b9d040 |
2575 | /* Not room for both */ |
60382766 |
2576 | PerlIO_flush(f); |
2577 | break; |
2578 | } |
f5b9d040 |
2579 | else |
2580 | { |
2581 | *(b->ptr)++ = 0xd; /* CR */ |
2582 | *(b->ptr)++ = 0xa; /* LF */ |
2583 | buf++; |
2584 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) |
2585 | { |
2586 | PerlIO_flush(f); |
2587 | break; |
2588 | } |
2589 | } |
2590 | } |
2591 | else |
2592 | { |
2593 | int ch = *buf++; |
2594 | *(b->ptr)++ = ch; |
2595 | } |
2596 | if (b->ptr >= eptr) |
2597 | { |
2598 | PerlIO_flush(f); |
2599 | break; |
99efab12 |
2600 | } |
99efab12 |
2601 | } |
2602 | } |
f5b9d040 |
2603 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) |
2604 | PerlIO_flush(f); |
2605 | return (buf - (STDCHAR *) vbuf); |
99efab12 |
2606 | } |
99efab12 |
2607 | } |
2608 | |
2609 | IV |
2610 | PerlIOCrlf_flush(PerlIO *f) |
2611 | { |
2612 | PerlIOCrlf *c = PerlIOSelf(f,PerlIOCrlf); |
2613 | if (c->nl) |
2614 | { |
99efab12 |
2615 | *(c->nl) = 0xd; |
60382766 |
2616 | c->nl = NULL; |
99efab12 |
2617 | } |
2618 | return PerlIOBuf_flush(f); |
2619 | } |
2620 | |
66ecd56b |
2621 | PerlIO_funcs PerlIO_crlf = { |
2622 | "crlf", |
99efab12 |
2623 | sizeof(PerlIOCrlf), |
f5b9d040 |
2624 | PERLIO_K_BUFFERED|PERLIO_K_CANCRLF, |
66ecd56b |
2625 | PerlIOBase_fileno, |
2626 | PerlIOBuf_fdopen, |
2627 | PerlIOBuf_open, |
2628 | PerlIOBuf_reopen, |
f5b9d040 |
2629 | PerlIOCrlf_pushed, |
99efab12 |
2630 | PerlIOBase_noop_ok, /* popped */ |
2631 | PerlIOBuf_read, /* generic read works with ptr/cnt lies ... */ |
2632 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
2633 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ |
66ecd56b |
2634 | PerlIOBuf_seek, |
2635 | PerlIOBuf_tell, |
2636 | PerlIOBuf_close, |
99efab12 |
2637 | PerlIOCrlf_flush, |
66ecd56b |
2638 | PerlIOBuf_fill, |
2639 | PerlIOBase_eof, |
2640 | PerlIOBase_error, |
2641 | PerlIOBase_clearerr, |
2642 | PerlIOBuf_setlinebuf, |
2643 | PerlIOBuf_get_base, |
2644 | PerlIOBuf_bufsiz, |
2645 | PerlIOBuf_get_ptr, |
99efab12 |
2646 | PerlIOCrlf_get_cnt, |
2647 | PerlIOCrlf_set_ptrcnt, |
66ecd56b |
2648 | }; |
2649 | |
06da4f11 |
2650 | #ifdef HAS_MMAP |
2651 | /*--------------------------------------------------------------------------------------*/ |
2652 | /* mmap as "buffer" layer */ |
2653 | |
2654 | typedef struct |
2655 | { |
2656 | PerlIOBuf base; /* PerlIOBuf stuff */ |
c3d7c7c9 |
2657 | Mmap_t mptr; /* Mapped address */ |
06da4f11 |
2658 | Size_t len; /* mapped length */ |
2659 | STDCHAR *bbuf; /* malloced buffer if map fails */ |
2660 | } PerlIOMmap; |
2661 | |
c3d7c7c9 |
2662 | static size_t page_size = 0; |
2663 | |
06da4f11 |
2664 | IV |
2665 | PerlIOMmap_map(PerlIO *f) |
2666 | { |
68d873c6 |
2667 | dTHX; |
06da4f11 |
2668 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2669 | PerlIOBuf *b = &m->base; |
2670 | IV flags = PerlIOBase(f)->flags; |
2671 | IV code = 0; |
2672 | if (m->len) |
2673 | abort(); |
2674 | if (flags & PERLIO_F_CANREAD) |
2675 | { |
2676 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2677 | int fd = PerlIO_fileno(f); |
2678 | struct stat st; |
2679 | code = fstat(fd,&st); |
2680 | if (code == 0 && S_ISREG(st.st_mode)) |
2681 | { |
2682 | SSize_t len = st.st_size - b->posn; |
2683 | if (len > 0) |
2684 | { |
c3d7c7c9 |
2685 | Off_t posn; |
68d873c6 |
2686 | if (!page_size) { |
2687 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE)) |
2688 | { |
2689 | SETERRNO(0,SS$_NORMAL); |
2690 | # ifdef _SC_PAGESIZE |
2691 | page_size = sysconf(_SC_PAGESIZE); |
2692 | # else |
2693 | page_size = sysconf(_SC_PAGE_SIZE); |
14aaf8e8 |
2694 | # endif |
68d873c6 |
2695 | if ((long)page_size < 0) { |
2696 | if (errno) { |
2697 | SV *error = ERRSV; |
2698 | char *msg; |
2699 | STRLEN n_a; |
2700 | (void)SvUPGRADE(error, SVt_PV); |
2701 | msg = SvPVx(error, n_a); |
14aaf8e8 |
2702 | Perl_croak(aTHX_ "panic: sysconf: %s", msg); |
68d873c6 |
2703 | } |
2704 | else |
14aaf8e8 |
2705 | Perl_croak(aTHX_ "panic: sysconf: pagesize unknown"); |
68d873c6 |
2706 | } |
2707 | } |
2708 | #else |
2709 | # ifdef HAS_GETPAGESIZE |
c3d7c7c9 |
2710 | page_size = getpagesize(); |
68d873c6 |
2711 | # else |
2712 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
2713 | page_size = PAGESIZE; /* compiletime, bad */ |
2714 | # endif |
2715 | # endif |
2716 | #endif |
2717 | if ((IV)page_size <= 0) |
14aaf8e8 |
2718 | Perl_croak(aTHX_ "panic: bad pagesize %"IVdf, (IV)page_size); |
68d873c6 |
2719 | } |
c3d7c7c9 |
2720 | if (b->posn < 0) |
2721 | { |
2722 | /* This is a hack - should never happen - open should have set it ! */ |
2723 | b->posn = PerlIO_tell(PerlIONext(f)); |
2724 | } |
2725 | posn = (b->posn / page_size) * page_size; |
2726 | len = st.st_size - posn; |
2727 | m->mptr = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, posn); |
2728 | if (m->mptr && m->mptr != (Mmap_t) -1) |
06da4f11 |
2729 | { |
2730 | #if defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
c3d7c7c9 |
2731 | madvise(m->mptr, len, MADV_SEQUENTIAL); |
06da4f11 |
2732 | #endif |
c3d7c7c9 |
2733 | PerlIOBase(f)->flags = (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; |
2734 | b->end = ((STDCHAR *)m->mptr) + len; |
2735 | b->buf = ((STDCHAR *)m->mptr) + (b->posn - posn); |
2736 | b->ptr = b->buf; |
2737 | m->len = len; |
06da4f11 |
2738 | } |
2739 | else |
2740 | { |
2741 | b->buf = NULL; |
2742 | } |
2743 | } |
2744 | else |
2745 | { |
2746 | PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF; |
2747 | b->buf = NULL; |
2748 | b->ptr = b->end = b->ptr; |
2749 | code = -1; |
2750 | } |
2751 | } |
2752 | } |
2753 | return code; |
2754 | } |
2755 | |
2756 | IV |
2757 | PerlIOMmap_unmap(PerlIO *f) |
2758 | { |
2759 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2760 | PerlIOBuf *b = &m->base; |
2761 | IV code = 0; |
2762 | if (m->len) |
2763 | { |
2764 | if (b->buf) |
2765 | { |
c3d7c7c9 |
2766 | code = munmap(m->mptr, m->len); |
2767 | b->buf = NULL; |
2768 | m->len = 0; |
2769 | m->mptr = NULL; |
06da4f11 |
2770 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0) |
2771 | code = -1; |
06da4f11 |
2772 | } |
2773 | b->ptr = b->end = b->buf; |
2774 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
2775 | } |
2776 | return code; |
2777 | } |
2778 | |
2779 | STDCHAR * |
2780 | PerlIOMmap_get_base(PerlIO *f) |
2781 | { |
2782 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2783 | PerlIOBuf *b = &m->base; |
2784 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
2785 | { |
2786 | /* Already have a readbuffer in progress */ |
2787 | return b->buf; |
2788 | } |
2789 | if (b->buf) |
2790 | { |
2791 | /* We have a write buffer or flushed PerlIOBuf read buffer */ |
2792 | m->bbuf = b->buf; /* save it in case we need it again */ |
2793 | b->buf = NULL; /* Clear to trigger below */ |
2794 | } |
2795 | if (!b->buf) |
2796 | { |
2797 | PerlIOMmap_map(f); /* Try and map it */ |
2798 | if (!b->buf) |
2799 | { |
2800 | /* Map did not work - recover PerlIOBuf buffer if we have one */ |
2801 | b->buf = m->bbuf; |
2802 | } |
2803 | } |
2804 | b->ptr = b->end = b->buf; |
2805 | if (b->buf) |
2806 | return b->buf; |
2807 | return PerlIOBuf_get_base(f); |
2808 | } |
2809 | |
2810 | SSize_t |
2811 | PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count) |
2812 | { |
2813 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2814 | PerlIOBuf *b = &m->base; |
2815 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
2816 | PerlIO_flush(f); |
2817 | if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count)) |
2818 | { |
2819 | b->ptr -= count; |
2820 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
2821 | return count; |
2822 | } |
2823 | if (m->len) |
2824 | { |
4a4a6116 |
2825 | /* Loose the unwritable mapped buffer */ |
06da4f11 |
2826 | PerlIO_flush(f); |
c3d7c7c9 |
2827 | /* If flush took the "buffer" see if we have one from before */ |
2828 | if (!b->buf && m->bbuf) |
2829 | b->buf = m->bbuf; |
2830 | if (!b->buf) |
2831 | { |
2832 | PerlIOBuf_get_base(f); |
2833 | m->bbuf = b->buf; |
2834 | } |
06da4f11 |
2835 | } |
5e2ab84b |
2836 | return PerlIOBuf_unread(f,vbuf,count); |
06da4f11 |
2837 | } |
2838 | |
2839 | SSize_t |
2840 | PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count) |
2841 | { |
2842 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2843 | PerlIOBuf *b = &m->base; |
2844 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) |
2845 | { |
2846 | /* No, or wrong sort of, buffer */ |
2847 | if (m->len) |
2848 | { |
2849 | if (PerlIOMmap_unmap(f) != 0) |
2850 | return 0; |
2851 | } |
2852 | /* If unmap took the "buffer" see if we have one from before */ |
2853 | if (!b->buf && m->bbuf) |
2854 | b->buf = m->bbuf; |
2855 | if (!b->buf) |
2856 | { |
2857 | PerlIOBuf_get_base(f); |
2858 | m->bbuf = b->buf; |
2859 | } |
2860 | } |
2861 | return PerlIOBuf_write(f,vbuf,count); |
2862 | } |
2863 | |
2864 | IV |
2865 | PerlIOMmap_flush(PerlIO *f) |
2866 | { |
2867 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2868 | PerlIOBuf *b = &m->base; |
2869 | IV code = PerlIOBuf_flush(f); |
2870 | /* Now we are "synced" at PerlIOBuf level */ |
2871 | if (b->buf) |
2872 | { |
2873 | if (m->len) |
2874 | { |
2875 | /* Unmap the buffer */ |
2876 | if (PerlIOMmap_unmap(f) != 0) |
2877 | code = -1; |
2878 | } |
2879 | else |
2880 | { |
2881 | /* We seem to have a PerlIOBuf buffer which was not mapped |
2882 | * remember it in case we need one later |
2883 | */ |
2884 | m->bbuf = b->buf; |
2885 | } |
2886 | } |
06da4f11 |
2887 | return code; |
2888 | } |
2889 | |
2890 | IV |
2891 | PerlIOMmap_fill(PerlIO *f) |
2892 | { |
2893 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
2894 | IV code = PerlIO_flush(f); |
06da4f11 |
2895 | if (code == 0 && !b->buf) |
2896 | { |
2897 | code = PerlIOMmap_map(f); |
06da4f11 |
2898 | } |
2899 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
2900 | { |
2901 | code = PerlIOBuf_fill(f); |
06da4f11 |
2902 | } |
2903 | return code; |
2904 | } |
2905 | |
2906 | IV |
2907 | PerlIOMmap_close(PerlIO *f) |
2908 | { |
2909 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2910 | PerlIOBuf *b = &m->base; |
2911 | IV code = PerlIO_flush(f); |
2912 | if (m->bbuf) |
2913 | { |
2914 | b->buf = m->bbuf; |
2915 | m->bbuf = NULL; |
2916 | b->ptr = b->end = b->buf; |
2917 | } |
2918 | if (PerlIOBuf_close(f) != 0) |
2919 | code = -1; |
06da4f11 |
2920 | return code; |
2921 | } |
2922 | |
2923 | |
2924 | PerlIO_funcs PerlIO_mmap = { |
2925 | "mmap", |
2926 | sizeof(PerlIOMmap), |
f5b9d040 |
2927 | PERLIO_K_BUFFERED, |
06da4f11 |
2928 | PerlIOBase_fileno, |
2929 | PerlIOBuf_fdopen, |
2930 | PerlIOBuf_open, |
c3d7c7c9 |
2931 | PerlIOBuf_reopen, |
5e2ab84b |
2932 | PerlIOBuf_pushed, |
06da4f11 |
2933 | PerlIOBase_noop_ok, |
2934 | PerlIOBuf_read, |
2935 | PerlIOMmap_unread, |
2936 | PerlIOMmap_write, |
2937 | PerlIOBuf_seek, |
2938 | PerlIOBuf_tell, |
2939 | PerlIOBuf_close, |
2940 | PerlIOMmap_flush, |
2941 | PerlIOMmap_fill, |
2942 | PerlIOBase_eof, |
2943 | PerlIOBase_error, |
2944 | PerlIOBase_clearerr, |
2945 | PerlIOBuf_setlinebuf, |
2946 | PerlIOMmap_get_base, |
2947 | PerlIOBuf_bufsiz, |
2948 | PerlIOBuf_get_ptr, |
2949 | PerlIOBuf_get_cnt, |
2950 | PerlIOBuf_set_ptrcnt, |
2951 | }; |
2952 | |
2953 | #endif /* HAS_MMAP */ |
2954 | |
9e353e3b |
2955 | void |
2956 | PerlIO_init(void) |
760ac839 |
2957 | { |
9e353e3b |
2958 | if (!_perlio) |
6f9d8c32 |
2959 | { |
be696b0a |
2960 | #ifndef WIN32 |
9e353e3b |
2961 | atexit(&PerlIO_cleanup); |
be696b0a |
2962 | #endif |
6f9d8c32 |
2963 | } |
760ac839 |
2964 | } |
2965 | |
9e353e3b |
2966 | #undef PerlIO_stdin |
2967 | PerlIO * |
2968 | PerlIO_stdin(void) |
2969 | { |
2970 | if (!_perlio) |
f3862f8b |
2971 | PerlIO_stdstreams(); |
05d1247b |
2972 | return &_perlio[1]; |
9e353e3b |
2973 | } |
2974 | |
2975 | #undef PerlIO_stdout |
2976 | PerlIO * |
2977 | PerlIO_stdout(void) |
2978 | { |
2979 | if (!_perlio) |
f3862f8b |
2980 | PerlIO_stdstreams(); |
05d1247b |
2981 | return &_perlio[2]; |
9e353e3b |
2982 | } |
2983 | |
2984 | #undef PerlIO_stderr |
2985 | PerlIO * |
2986 | PerlIO_stderr(void) |
2987 | { |
2988 | if (!_perlio) |
f3862f8b |
2989 | PerlIO_stdstreams(); |
05d1247b |
2990 | return &_perlio[3]; |
9e353e3b |
2991 | } |
2992 | |
2993 | /*--------------------------------------------------------------------------------------*/ |
2994 | |
2995 | #undef PerlIO_getname |
2996 | char * |
2997 | PerlIO_getname(PerlIO *f, char *buf) |
2998 | { |
2999 | dTHX; |
3000 | Perl_croak(aTHX_ "Don't know how to get file name"); |
3001 | return NULL; |
3002 | } |
3003 | |
3004 | |
3005 | /*--------------------------------------------------------------------------------------*/ |
3006 | /* Functions which can be called on any kind of PerlIO implemented |
3007 | in terms of above |
3008 | */ |
3009 | |
3010 | #undef PerlIO_getc |
6f9d8c32 |
3011 | int |
9e353e3b |
3012 | PerlIO_getc(PerlIO *f) |
760ac839 |
3013 | { |
313ca112 |
3014 | STDCHAR buf[1]; |
3015 | SSize_t count = PerlIO_read(f,buf,1); |
9e353e3b |
3016 | if (count == 1) |
313ca112 |
3017 | { |
3018 | return (unsigned char) buf[0]; |
3019 | } |
3020 | return EOF; |
3021 | } |
3022 | |
3023 | #undef PerlIO_ungetc |
3024 | int |
3025 | PerlIO_ungetc(PerlIO *f, int ch) |
3026 | { |
3027 | if (ch != EOF) |
3028 | { |
3029 | STDCHAR buf = ch; |
3030 | if (PerlIO_unread(f,&buf,1) == 1) |
3031 | return ch; |
3032 | } |
3033 | return EOF; |
760ac839 |
3034 | } |
3035 | |
9e353e3b |
3036 | #undef PerlIO_putc |
3037 | int |
3038 | PerlIO_putc(PerlIO *f, int ch) |
760ac839 |
3039 | { |
9e353e3b |
3040 | STDCHAR buf = ch; |
3041 | return PerlIO_write(f,&buf,1); |
760ac839 |
3042 | } |
3043 | |
9e353e3b |
3044 | #undef PerlIO_puts |
760ac839 |
3045 | int |
9e353e3b |
3046 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 |
3047 | { |
9e353e3b |
3048 | STRLEN len = strlen(s); |
3049 | return PerlIO_write(f,s,len); |
760ac839 |
3050 | } |
3051 | |
3052 | #undef PerlIO_rewind |
3053 | void |
c78749f2 |
3054 | PerlIO_rewind(PerlIO *f) |
760ac839 |
3055 | { |
6f9d8c32 |
3056 | PerlIO_seek(f,(Off_t)0,SEEK_SET); |
9e353e3b |
3057 | PerlIO_clearerr(f); |
6f9d8c32 |
3058 | } |
3059 | |
3060 | #undef PerlIO_vprintf |
3061 | int |
3062 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) |
3063 | { |
3064 | dTHX; |
bb9950b7 |
3065 | SV *sv = newSVpvn("",0); |
6f9d8c32 |
3066 | char *s; |
3067 | STRLEN len; |
2cc61e15 |
3068 | #ifdef NEED_VA_COPY |
3069 | va_list apc; |
3070 | Perl_va_copy(ap, apc); |
3071 | sv_vcatpvf(sv, fmt, &apc); |
3072 | #else |
6f9d8c32 |
3073 | sv_vcatpvf(sv, fmt, &ap); |
2cc61e15 |
3074 | #endif |
6f9d8c32 |
3075 | s = SvPV(sv,len); |
bb9950b7 |
3076 | return PerlIO_write(f,s,len); |
760ac839 |
3077 | } |
3078 | |
3079 | #undef PerlIO_printf |
6f9d8c32 |
3080 | int |
760ac839 |
3081 | PerlIO_printf(PerlIO *f,const char *fmt,...) |
760ac839 |
3082 | { |
3083 | va_list ap; |
3084 | int result; |
760ac839 |
3085 | va_start(ap,fmt); |
6f9d8c32 |
3086 | result = PerlIO_vprintf(f,fmt,ap); |
760ac839 |
3087 | va_end(ap); |
3088 | return result; |
3089 | } |
3090 | |
3091 | #undef PerlIO_stdoutf |
6f9d8c32 |
3092 | int |
760ac839 |
3093 | PerlIO_stdoutf(const char *fmt,...) |
760ac839 |
3094 | { |
3095 | va_list ap; |
3096 | int result; |
760ac839 |
3097 | va_start(ap,fmt); |
760ac839 |
3098 | result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); |
3099 | va_end(ap); |
3100 | return result; |
3101 | } |
3102 | |
3103 | #undef PerlIO_tmpfile |
3104 | PerlIO * |
c78749f2 |
3105 | PerlIO_tmpfile(void) |
760ac839 |
3106 | { |
b1ef6e3b |
3107 | /* I have no idea how portable mkstemp() is ... */ |
83b075c3 |
3108 | #if defined(WIN32) || !defined(HAVE_MKSTEMP) |
adb71456 |
3109 | dTHX; |
83b075c3 |
3110 | PerlIO *f = NULL; |
eaf8b698 |
3111 | FILE *stdio = PerlSIO_tmpfile(); |
83b075c3 |
3112 | if (stdio) |
3113 | { |
5f1a76d0 |
3114 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(aTHX),&PerlIO_stdio,"w+"),PerlIOStdio); |
83b075c3 |
3115 | s->stdio = stdio; |
3116 | } |
3117 | return f; |
3118 | #else |
3119 | dTHX; |
6f9d8c32 |
3120 | SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0); |
3121 | int fd = mkstemp(SvPVX(sv)); |
3122 | PerlIO *f = NULL; |
3123 | if (fd >= 0) |
3124 | { |
b1ef6e3b |
3125 | f = PerlIO_fdopen(fd,"w+"); |
6f9d8c32 |
3126 | if (f) |
3127 | { |
9e353e3b |
3128 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; |
6f9d8c32 |
3129 | } |
00b02797 |
3130 | PerlLIO_unlink(SvPVX(sv)); |
6f9d8c32 |
3131 | SvREFCNT_dec(sv); |
3132 | } |
3133 | return f; |
83b075c3 |
3134 | #endif |
760ac839 |
3135 | } |
3136 | |
6f9d8c32 |
3137 | #undef HAS_FSETPOS |
3138 | #undef HAS_FGETPOS |
3139 | |
760ac839 |
3140 | #endif /* USE_SFIO */ |
3141 | #endif /* PERLIO_IS_STDIO */ |
3142 | |
9e353e3b |
3143 | /*======================================================================================*/ |
3144 | /* Now some functions in terms of above which may be needed even if |
3145 | we are not in true PerlIO mode |
3146 | */ |
3147 | |
760ac839 |
3148 | #ifndef HAS_FSETPOS |
3149 | #undef PerlIO_setpos |
3150 | int |
c78749f2 |
3151 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
760ac839 |
3152 | { |
6f9d8c32 |
3153 | return PerlIO_seek(f,*pos,0); |
760ac839 |
3154 | } |
c411622e |
3155 | #else |
3156 | #ifndef PERLIO_IS_STDIO |
3157 | #undef PerlIO_setpos |
3158 | int |
c78749f2 |
3159 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
c411622e |
3160 | { |
2d4389e4 |
3161 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
3162 | return fsetpos64(f, pos); |
3163 | #else |
c411622e |
3164 | return fsetpos(f, pos); |
d9b3e12d |
3165 | #endif |
c411622e |
3166 | } |
3167 | #endif |
760ac839 |
3168 | #endif |
3169 | |
3170 | #ifndef HAS_FGETPOS |
3171 | #undef PerlIO_getpos |
3172 | int |
c78749f2 |
3173 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
760ac839 |
3174 | { |
3175 | *pos = PerlIO_tell(f); |
a17c7222 |
3176 | return *pos == -1 ? -1 : 0; |
760ac839 |
3177 | } |
c411622e |
3178 | #else |
3179 | #ifndef PERLIO_IS_STDIO |
3180 | #undef PerlIO_getpos |
3181 | int |
c78749f2 |
3182 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
c411622e |
3183 | { |
2d4389e4 |
3184 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
3185 | return fgetpos64(f, pos); |
3186 | #else |
c411622e |
3187 | return fgetpos(f, pos); |
d9b3e12d |
3188 | #endif |
c411622e |
3189 | } |
3190 | #endif |
760ac839 |
3191 | #endif |
3192 | |
3193 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) |
3194 | |
3195 | int |
c78749f2 |
3196 | vprintf(char *pat, char *args) |
662a7e3f |
3197 | { |
3198 | _doprnt(pat, args, stdout); |
3199 | return 0; /* wrong, but perl doesn't use the return value */ |
3200 | } |
3201 | |
3202 | int |
c78749f2 |
3203 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 |
3204 | { |
3205 | _doprnt(pat, args, fd); |
3206 | return 0; /* wrong, but perl doesn't use the return value */ |
3207 | } |
3208 | |
3209 | #endif |
3210 | |
3211 | #ifndef PerlIO_vsprintf |
6f9d8c32 |
3212 | int |
8ac85365 |
3213 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 |
3214 | { |
3215 | int val = vsprintf(s, fmt, ap); |
3216 | if (n >= 0) |
3217 | { |
8c86a920 |
3218 | if (strlen(s) >= (STRLEN)n) |
760ac839 |
3219 | { |
bf49b057 |
3220 | dTHX; |
fb4a9925 |
3221 | (void)PerlIO_puts(Perl_error_log, |
3222 | "panic: sprintf overflow - memory corrupted!\n"); |
bf49b057 |
3223 | my_exit(1); |
760ac839 |
3224 | } |
3225 | } |
3226 | return val; |
3227 | } |
3228 | #endif |
3229 | |
3230 | #ifndef PerlIO_sprintf |
6f9d8c32 |
3231 | int |
760ac839 |
3232 | PerlIO_sprintf(char *s, int n, const char *fmt,...) |
760ac839 |
3233 | { |
3234 | va_list ap; |
3235 | int result; |
760ac839 |
3236 | va_start(ap,fmt); |
760ac839 |
3237 | result = PerlIO_vsprintf(s, n, fmt, ap); |
3238 | va_end(ap); |
3239 | return result; |
3240 | } |
3241 | #endif |
3242 | |
c5be433b |
3243 | |