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