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1 | /* perlio.c |
2 | * |
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3 | * Copyright (c) 1996-2000, Nick Ing-Simmons |
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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 | |
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17 | #define PERLIO_NOT_STDIO 0 |
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18 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
6f9d8c32 |
19 | /* #define PerlIO FILE */ |
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20 | #endif |
21 | /* |
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22 | * This file provides those parts of PerlIO abstraction |
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23 | * which are not #defined in iperlsys.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 |
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29 | #include "perl.h" |
30 | |
32e30700 |
31 | #if !defined(PERL_IMPLICIT_SYS) |
32 | |
6f9d8c32 |
33 | #ifdef PERLIO_IS_STDIO |
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34 | |
35 | void |
8ac85365 |
36 | PerlIO_init(void) |
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37 | { |
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38 | /* Does nothing (yet) except force this file to be included |
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39 | in perl binary. That allows this file to force inclusion |
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40 | of other functions that may be required by loadable |
41 | extensions e.g. for FileHandle::tmpfile |
760ac839 |
42 | */ |
43 | } |
44 | |
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45 | #undef PerlIO_tmpfile |
46 | PerlIO * |
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47 | PerlIO_tmpfile(void) |
33dcbb9a |
48 | { |
49 | return tmpfile(); |
50 | } |
51 | |
760ac839 |
52 | #else /* PERLIO_IS_STDIO */ |
53 | |
54 | #ifdef USE_SFIO |
55 | |
56 | #undef HAS_FSETPOS |
57 | #undef HAS_FGETPOS |
58 | |
6f9d8c32 |
59 | /* This section is just to make sure these functions |
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60 | get pulled in from libsfio.a |
61 | */ |
62 | |
63 | #undef PerlIO_tmpfile |
64 | PerlIO * |
c78749f2 |
65 | PerlIO_tmpfile(void) |
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66 | { |
67 | return sftmp(0); |
68 | } |
69 | |
70 | void |
c78749f2 |
71 | PerlIO_init(void) |
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72 | { |
6f9d8c32 |
73 | /* Force this file to be included in perl binary. Which allows |
74 | * this file to force inclusion of other functions that may be |
75 | * required by loadable extensions e.g. for FileHandle::tmpfile |
760ac839 |
76 | */ |
77 | |
78 | /* Hack |
79 | * sfio does its own 'autoflush' on stdout in common cases. |
6f9d8c32 |
80 | * Flush results in a lot of lseek()s to regular files and |
760ac839 |
81 | * lot of small writes to pipes. |
82 | */ |
83 | sfset(sfstdout,SF_SHARE,0); |
84 | } |
85 | |
17c3b450 |
86 | #else /* USE_SFIO */ |
6f9d8c32 |
87 | /*======================================================================================*/ |
6f9d8c32 |
88 | /* Implement all the PerlIO interface ourselves. |
9e353e3b |
89 | */ |
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90 | |
b1ef6e3b |
91 | /* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */ |
02f66e2f |
92 | #ifdef I_UNISTD |
93 | #include <unistd.h> |
94 | #endif |
06da4f11 |
95 | #ifdef HAS_MMAP |
96 | #include <sys/mman.h> |
97 | #endif |
98 | |
f3862f8b |
99 | #include "XSUB.h" |
02f66e2f |
100 | |
6f9d8c32 |
101 | #undef printf |
102 | void PerlIO_debug(char *fmt,...) __attribute__((format(printf,1,2))); |
103 | |
6f9d8c32 |
104 | void |
105 | PerlIO_debug(char *fmt,...) |
106 | { |
107 | static int dbg = 0; |
108 | if (!dbg) |
109 | { |
110 | char *s = getenv("PERLIO_DEBUG"); |
111 | if (s && *s) |
112 | dbg = open(s,O_WRONLY|O_CREAT|O_APPEND,0666); |
113 | else |
114 | dbg = -1; |
115 | } |
116 | if (dbg > 0) |
117 | { |
118 | dTHX; |
119 | va_list ap; |
120 | SV *sv = newSVpvn("",0); |
121 | char *s; |
122 | STRLEN len; |
123 | va_start(ap,fmt); |
05d1247b |
124 | s = CopFILE(PL_curcop); |
125 | if (!s) |
126 | s = "(none)"; |
127 | Perl_sv_catpvf(aTHX_ sv, "%s:%"IVdf" ", s, (IV)CopLINE(PL_curcop)); |
c7fc522f |
128 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
129 | |
6f9d8c32 |
130 | s = SvPV(sv,len); |
131 | write(dbg,s,len); |
132 | va_end(ap); |
133 | SvREFCNT_dec(sv); |
134 | } |
135 | } |
136 | |
9e353e3b |
137 | /*--------------------------------------------------------------------------------------*/ |
138 | |
06da4f11 |
139 | typedef struct _PerlIO_funcs PerlIO_funcs; |
140 | struct _PerlIO_funcs |
9e353e3b |
141 | { |
142 | char * name; |
143 | Size_t size; |
144 | IV kind; |
145 | IV (*Fileno)(PerlIO *f); |
06da4f11 |
146 | PerlIO * (*Fdopen)(PerlIO_funcs *tab, int fd, const char *mode); |
147 | PerlIO * (*Open)(PerlIO_funcs *tab, const char *path, const char *mode); |
9e353e3b |
148 | int (*Reopen)(const char *path, const char *mode, PerlIO *f); |
06da4f11 |
149 | IV (*Pushed)(PerlIO *f,const char *mode); |
150 | IV (*Popped)(PerlIO *f); |
9e353e3b |
151 | /* Unix-like functions - cf sfio line disciplines */ |
152 | SSize_t (*Read)(PerlIO *f, void *vbuf, Size_t count); |
153 | SSize_t (*Unread)(PerlIO *f, const void *vbuf, Size_t count); |
154 | SSize_t (*Write)(PerlIO *f, const void *vbuf, Size_t count); |
155 | IV (*Seek)(PerlIO *f, Off_t offset, int whence); |
156 | Off_t (*Tell)(PerlIO *f); |
157 | IV (*Close)(PerlIO *f); |
158 | /* Stdio-like buffered IO functions */ |
159 | IV (*Flush)(PerlIO *f); |
06da4f11 |
160 | IV (*Fill)(PerlIO *f); |
9e353e3b |
161 | IV (*Eof)(PerlIO *f); |
162 | IV (*Error)(PerlIO *f); |
163 | void (*Clearerr)(PerlIO *f); |
164 | void (*Setlinebuf)(PerlIO *f); |
165 | /* Perl's snooping functions */ |
166 | STDCHAR * (*Get_base)(PerlIO *f); |
167 | Size_t (*Get_bufsiz)(PerlIO *f); |
168 | STDCHAR * (*Get_ptr)(PerlIO *f); |
169 | SSize_t (*Get_cnt)(PerlIO *f); |
170 | void (*Set_ptrcnt)(PerlIO *f,STDCHAR *ptr,SSize_t cnt); |
06da4f11 |
171 | }; |
6f9d8c32 |
172 | |
173 | struct _PerlIO |
174 | { |
9e353e3b |
175 | PerlIOl * next; /* Lower layer */ |
176 | PerlIO_funcs * tab; /* Functions for this layer */ |
177 | IV flags; /* Various flags for state */ |
6f9d8c32 |
178 | }; |
179 | |
9e353e3b |
180 | /*--------------------------------------------------------------------------------------*/ |
181 | |
182 | /* Flag values */ |
f3862f8b |
183 | #define PERLIO_F_EOF 0x00010000 |
184 | #define PERLIO_F_CANWRITE 0x00020000 |
185 | #define PERLIO_F_CANREAD 0x00040000 |
186 | #define PERLIO_F_ERROR 0x00080000 |
187 | #define PERLIO_F_TRUNCATE 0x00100000 |
188 | #define PERLIO_F_APPEND 0x00200000 |
189 | #define PERLIO_F_BINARY 0x00400000 |
190 | #define PERLIO_F_UTF8 0x00800000 |
191 | #define PERLIO_F_LINEBUF 0x01000000 |
192 | #define PERLIO_F_WRBUF 0x02000000 |
193 | #define PERLIO_F_RDBUF 0x04000000 |
194 | #define PERLIO_F_TEMP 0x08000000 |
195 | #define PERLIO_F_OPEN 0x10000000 |
9e353e3b |
196 | |
197 | #define PerlIOBase(f) (*(f)) |
198 | #define PerlIOSelf(f,type) ((type *)PerlIOBase(f)) |
199 | #define PerlIONext(f) (&(PerlIOBase(f)->next)) |
200 | |
201 | /*--------------------------------------------------------------------------------------*/ |
202 | /* Inner level routines */ |
203 | |
b1ef6e3b |
204 | /* Table of pointers to the PerlIO structs (malloc'ed) */ |
05d1247b |
205 | PerlIO *_perlio = NULL; |
206 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 |
207 | |
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208 | PerlIO * |
6f9d8c32 |
209 | PerlIO_allocate(void) |
210 | { |
f3862f8b |
211 | /* Find a free slot in the table, allocating new table as necessary */ |
05d1247b |
212 | PerlIO **last = &_perlio; |
6f9d8c32 |
213 | PerlIO *f; |
05d1247b |
214 | while ((f = *last)) |
6f9d8c32 |
215 | { |
05d1247b |
216 | int i; |
217 | last = (PerlIO **)(f); |
218 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
6f9d8c32 |
219 | { |
05d1247b |
220 | if (!*++f) |
6f9d8c32 |
221 | { |
6f9d8c32 |
222 | return f; |
223 | } |
6f9d8c32 |
224 | } |
6f9d8c32 |
225 | } |
05d1247b |
226 | Newz('I',f,PERLIO_TABLE_SIZE,PerlIO); |
227 | if (!f) |
228 | return NULL; |
229 | *last = f; |
230 | return f+1; |
231 | } |
232 | |
233 | void |
234 | PerlIO_cleantable(PerlIO **tablep) |
235 | { |
236 | PerlIO *table = *tablep; |
237 | if (table) |
238 | { |
239 | int i; |
240 | PerlIO_cleantable((PerlIO **) &(table[0])); |
241 | for (i=PERLIO_TABLE_SIZE-1; i > 0; i--) |
242 | { |
243 | PerlIO *f = table+i; |
244 | if (*f) |
245 | PerlIO_close(f); |
246 | } |
247 | Safefree(table); |
248 | *tablep = NULL; |
249 | } |
250 | } |
251 | |
4a4a6116 |
252 | HV *PerlIO_layer_hv; |
253 | AV *PerlIO_layer_av; |
254 | |
05d1247b |
255 | void |
256 | PerlIO_cleanup(void) |
257 | { |
258 | PerlIO_cleantable(&_perlio); |
6f9d8c32 |
259 | } |
260 | |
9e353e3b |
261 | void |
262 | PerlIO_pop(PerlIO *f) |
760ac839 |
263 | { |
9e353e3b |
264 | PerlIOl *l = *f; |
265 | if (l) |
6f9d8c32 |
266 | { |
06da4f11 |
267 | (*l->tab->Popped)(f); |
9e353e3b |
268 | *f = l->next; |
269 | Safefree(l); |
6f9d8c32 |
270 | } |
6f9d8c32 |
271 | } |
272 | |
273 | #undef PerlIO_close |
274 | int |
275 | PerlIO_close(PerlIO *f) |
276 | { |
9e353e3b |
277 | int code = (*PerlIOBase(f)->tab->Close)(f); |
278 | while (*f) |
6f9d8c32 |
279 | { |
9e353e3b |
280 | PerlIO_pop(f); |
6f9d8c32 |
281 | } |
282 | return code; |
283 | } |
284 | |
9e353e3b |
285 | |
286 | /*--------------------------------------------------------------------------------------*/ |
287 | /* Given the abstraction above the public API functions */ |
288 | |
289 | #undef PerlIO_fileno |
290 | int |
291 | PerlIO_fileno(PerlIO *f) |
292 | { |
293 | return (*PerlIOBase(f)->tab->Fileno)(f); |
294 | } |
295 | |
f3862f8b |
296 | |
9e353e3b |
297 | extern PerlIO_funcs PerlIO_unix; |
9e353e3b |
298 | extern PerlIO_funcs PerlIO_perlio; |
f3862f8b |
299 | extern PerlIO_funcs PerlIO_stdio; |
06da4f11 |
300 | #ifdef HAS_MMAP |
301 | extern PerlIO_funcs PerlIO_mmap; |
302 | #endif |
f3862f8b |
303 | |
304 | XS(XS_perlio_import) |
305 | { |
306 | dXSARGS; |
307 | GV *gv = CvGV(cv); |
308 | char *s = GvNAME(gv); |
309 | STRLEN l = GvNAMELEN(gv); |
310 | PerlIO_debug("%.*s\n",(int) l,s); |
311 | XSRETURN_EMPTY; |
312 | } |
313 | |
314 | XS(XS_perlio_unimport) |
315 | { |
316 | dXSARGS; |
317 | GV *gv = CvGV(cv); |
318 | char *s = GvNAME(gv); |
319 | STRLEN l = GvNAMELEN(gv); |
320 | PerlIO_debug("%.*s\n",(int) l,s); |
321 | XSRETURN_EMPTY; |
322 | } |
323 | |
f3862f8b |
324 | SV * |
325 | PerlIO_find_layer(char *name, STRLEN len) |
326 | { |
327 | dTHX; |
328 | SV **svp; |
329 | SV *sv; |
330 | if (len <= 0) |
331 | len = strlen(name); |
332 | svp = hv_fetch(PerlIO_layer_hv,name,len,0); |
333 | if (svp && (sv = *svp) && SvROK(sv)) |
334 | return *svp; |
335 | return NULL; |
336 | } |
337 | |
338 | void |
339 | PerlIO_define_layer(PerlIO_funcs *tab) |
340 | { |
341 | dTHX; |
342 | HV *stash = gv_stashpv("perlio::Layer", TRUE); |
e7778b43 |
343 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash); |
f3862f8b |
344 | hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),sv,0); |
345 | } |
346 | |
347 | PerlIO_funcs * |
348 | PerlIO_default_layer(I32 n) |
349 | { |
350 | dTHX; |
351 | SV **svp; |
352 | SV *layer; |
353 | PerlIO_funcs *tab = &PerlIO_stdio; |
354 | int len; |
355 | if (!PerlIO_layer_hv) |
356 | { |
357 | char *s = getenv("PERLIO"); |
358 | newXS("perlio::import",XS_perlio_import,__FILE__); |
359 | newXS("perlio::unimport",XS_perlio_unimport,__FILE__); |
360 | PerlIO_layer_hv = get_hv("perlio::layers",GV_ADD|GV_ADDMULTI); |
361 | PerlIO_layer_av = get_av("perlio::layers",GV_ADD|GV_ADDMULTI); |
362 | PerlIO_define_layer(&PerlIO_unix); |
f3862f8b |
363 | PerlIO_define_layer(&PerlIO_perlio); |
364 | PerlIO_define_layer(&PerlIO_stdio); |
06da4f11 |
365 | #ifdef HAS_MMAP |
366 | PerlIO_define_layer(&PerlIO_mmap); |
367 | #endif |
f3862f8b |
368 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_unix.name,0))); |
369 | if (s) |
370 | { |
371 | while (*s) |
372 | { |
373 | while (*s && isspace((unsigned char)*s)) |
374 | s++; |
375 | if (*s) |
376 | { |
377 | char *e = s; |
378 | SV *layer; |
379 | while (*e && !isspace((unsigned char)*e)) |
380 | e++; |
381 | layer = PerlIO_find_layer(s,e-s); |
382 | if (layer) |
383 | { |
384 | PerlIO_debug("Pushing %.*s\n",(e-s),s); |
385 | av_push(PerlIO_layer_av,SvREFCNT_inc(layer)); |
386 | } |
387 | else |
313ca112 |
388 | Perl_warn(aTHX_ "Unknown layer %.*s",(e-s),s); |
f3862f8b |
389 | s = e; |
390 | } |
391 | } |
392 | } |
393 | } |
394 | len = av_len(PerlIO_layer_av); |
395 | if (len < 1) |
396 | { |
397 | if (PerlIO_stdio.Set_ptrcnt) |
398 | { |
399 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_stdio.name,0))); |
400 | } |
401 | else |
402 | { |
403 | av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_perlio.name,0))); |
404 | } |
405 | len = av_len(PerlIO_layer_av); |
406 | } |
407 | if (n < 0) |
408 | n += len+1; |
409 | svp = av_fetch(PerlIO_layer_av,n,0); |
410 | if (svp && (layer = *svp) && SvROK(layer) && SvIOK((layer = SvRV(layer)))) |
411 | { |
e7778b43 |
412 | tab = INT2PTR(PerlIO_funcs *, SvIV(layer)); |
f3862f8b |
413 | } |
414 | /* PerlIO_debug("Layer %d is %s\n",n,tab->name); */ |
415 | return tab; |
416 | } |
417 | |
418 | #define PerlIO_default_top() PerlIO_default_layer(-1) |
419 | #define PerlIO_default_btm() PerlIO_default_layer(0) |
420 | |
421 | void |
422 | PerlIO_stdstreams() |
423 | { |
424 | if (!_perlio) |
425 | { |
426 | PerlIO_allocate(); |
427 | PerlIO_fdopen(0,"Ir"); |
428 | PerlIO_fdopen(1,"Iw"); |
429 | PerlIO_fdopen(2,"Iw"); |
430 | } |
431 | } |
9e353e3b |
432 | |
433 | #undef PerlIO_fdopen |
434 | PerlIO * |
435 | PerlIO_fdopen(int fd, const char *mode) |
436 | { |
437 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
438 | if (!_perlio) |
439 | PerlIO_stdstreams(); |
06da4f11 |
440 | return (*tab->Fdopen)(tab,fd,mode); |
9e353e3b |
441 | } |
442 | |
6f9d8c32 |
443 | #undef PerlIO_open |
444 | PerlIO * |
445 | PerlIO_open(const char *path, const char *mode) |
446 | { |
9e353e3b |
447 | PerlIO_funcs *tab = PerlIO_default_top(); |
f3862f8b |
448 | if (!_perlio) |
449 | PerlIO_stdstreams(); |
06da4f11 |
450 | return (*tab->Open)(tab,path,mode); |
6f9d8c32 |
451 | } |
452 | |
9e353e3b |
453 | IV |
06da4f11 |
454 | PerlIOBase_pushed(PerlIO *f, const char *mode) |
6f9d8c32 |
455 | { |
9e353e3b |
456 | PerlIOl *l = PerlIOBase(f); |
457 | l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
458 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); |
459 | if (mode) |
6f9d8c32 |
460 | { |
9e353e3b |
461 | switch (*mode++) |
462 | { |
463 | case 'r': |
464 | l->flags = PERLIO_F_CANREAD; |
465 | break; |
466 | case 'a': |
467 | l->flags = PERLIO_F_APPEND|PERLIO_F_CANWRITE; |
468 | break; |
469 | case 'w': |
470 | l->flags = PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE; |
471 | break; |
472 | default: |
473 | errno = EINVAL; |
474 | return -1; |
475 | } |
476 | while (*mode) |
6f9d8c32 |
477 | { |
9e353e3b |
478 | switch (*mode++) |
6f9d8c32 |
479 | { |
9e353e3b |
480 | case '+': |
481 | l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE; |
482 | break; |
483 | case 'b': |
484 | l->flags |= PERLIO_F_BINARY; |
485 | break; |
486 | default: |
487 | errno = EINVAL; |
488 | return -1; |
6f9d8c32 |
489 | } |
490 | } |
9e353e3b |
491 | } |
492 | else |
493 | { |
494 | if (l->next) |
6f9d8c32 |
495 | { |
9e353e3b |
496 | l->flags |= l->next->flags & |
497 | (PERLIO_F_CANREAD|PERLIO_F_CANWRITE| |
498 | PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); |
6f9d8c32 |
499 | } |
500 | } |
9e353e3b |
501 | return 0; |
6f9d8c32 |
502 | } |
503 | |
9e353e3b |
504 | #undef PerlIO_reopen |
505 | PerlIO * |
506 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) |
6f9d8c32 |
507 | { |
9e353e3b |
508 | if (f) |
6f9d8c32 |
509 | { |
9e353e3b |
510 | PerlIO_flush(f); |
511 | if ((*PerlIOBase(f)->tab->Reopen)(path,mode,f) == 0) |
512 | { |
06da4f11 |
513 | if ((*PerlIOBase(f)->tab->Pushed)(f,mode) == 0) |
514 | return f; |
9e353e3b |
515 | } |
516 | return NULL; |
6f9d8c32 |
517 | } |
9e353e3b |
518 | else |
519 | return PerlIO_open(path,mode); |
760ac839 |
520 | } |
521 | |
9e353e3b |
522 | #undef PerlIO_read |
523 | SSize_t |
524 | PerlIO_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
525 | { |
9e353e3b |
526 | return (*PerlIOBase(f)->tab->Read)(f,vbuf,count); |
760ac839 |
527 | } |
528 | |
313ca112 |
529 | #undef PerlIO_unread |
530 | SSize_t |
531 | PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
532 | { |
313ca112 |
533 | return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count); |
760ac839 |
534 | } |
535 | |
9e353e3b |
536 | #undef PerlIO_write |
537 | SSize_t |
538 | PerlIO_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
539 | { |
9e353e3b |
540 | return (*PerlIOBase(f)->tab->Write)(f,vbuf,count); |
760ac839 |
541 | } |
542 | |
9e353e3b |
543 | #undef PerlIO_seek |
6f9d8c32 |
544 | int |
9e353e3b |
545 | PerlIO_seek(PerlIO *f, Off_t offset, int whence) |
760ac839 |
546 | { |
9e353e3b |
547 | return (*PerlIOBase(f)->tab->Seek)(f,offset,whence); |
760ac839 |
548 | } |
549 | |
9e353e3b |
550 | #undef PerlIO_tell |
551 | Off_t |
552 | PerlIO_tell(PerlIO *f) |
760ac839 |
553 | { |
9e353e3b |
554 | return (*PerlIOBase(f)->tab->Tell)(f); |
760ac839 |
555 | } |
556 | |
9e353e3b |
557 | #undef PerlIO_flush |
6f9d8c32 |
558 | int |
9e353e3b |
559 | PerlIO_flush(PerlIO *f) |
760ac839 |
560 | { |
6f9d8c32 |
561 | if (f) |
562 | { |
9e353e3b |
563 | return (*PerlIOBase(f)->tab->Flush)(f); |
6f9d8c32 |
564 | } |
9e353e3b |
565 | else |
6f9d8c32 |
566 | { |
05d1247b |
567 | PerlIO **table = &_perlio; |
9e353e3b |
568 | int code = 0; |
05d1247b |
569 | while ((f = *table)) |
6f9d8c32 |
570 | { |
05d1247b |
571 | int i; |
572 | table = (PerlIO **)(f++); |
573 | for (i=1; i < PERLIO_TABLE_SIZE; i++) |
9e353e3b |
574 | { |
575 | if (*f && PerlIO_flush(f) != 0) |
576 | code = -1; |
05d1247b |
577 | f++; |
9e353e3b |
578 | } |
6f9d8c32 |
579 | } |
9e353e3b |
580 | return code; |
6f9d8c32 |
581 | } |
760ac839 |
582 | } |
583 | |
06da4f11 |
584 | #undef PerlIO_fill |
585 | int |
586 | PerlIO_fill(PerlIO *f) |
587 | { |
588 | return (*PerlIOBase(f)->tab->Fill)(f); |
589 | } |
590 | |
f3862f8b |
591 | #undef PerlIO_isutf8 |
592 | int |
593 | PerlIO_isutf8(PerlIO *f) |
594 | { |
595 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; |
596 | } |
597 | |
9e353e3b |
598 | #undef PerlIO_eof |
6f9d8c32 |
599 | int |
9e353e3b |
600 | PerlIO_eof(PerlIO *f) |
760ac839 |
601 | { |
9e353e3b |
602 | return (*PerlIOBase(f)->tab->Eof)(f); |
603 | } |
604 | |
605 | #undef PerlIO_error |
606 | int |
607 | PerlIO_error(PerlIO *f) |
608 | { |
609 | return (*PerlIOBase(f)->tab->Error)(f); |
610 | } |
611 | |
612 | #undef PerlIO_clearerr |
613 | void |
614 | PerlIO_clearerr(PerlIO *f) |
615 | { |
616 | (*PerlIOBase(f)->tab->Clearerr)(f); |
617 | } |
618 | |
619 | #undef PerlIO_setlinebuf |
620 | void |
621 | PerlIO_setlinebuf(PerlIO *f) |
622 | { |
623 | (*PerlIOBase(f)->tab->Setlinebuf)(f); |
624 | } |
625 | |
626 | #undef PerlIO_has_base |
627 | int |
628 | PerlIO_has_base(PerlIO *f) |
629 | { |
630 | if (f && *f) |
6f9d8c32 |
631 | { |
9e353e3b |
632 | return (PerlIOBase(f)->tab->Get_base != NULL); |
6f9d8c32 |
633 | } |
9e353e3b |
634 | return 0; |
760ac839 |
635 | } |
636 | |
9e353e3b |
637 | #undef PerlIO_fast_gets |
638 | int |
639 | PerlIO_fast_gets(PerlIO *f) |
760ac839 |
640 | { |
9e353e3b |
641 | if (f && *f) |
6f9d8c32 |
642 | { |
c7fc522f |
643 | PerlIOl *l = PerlIOBase(f); |
644 | return (l->tab->Set_ptrcnt != NULL); |
6f9d8c32 |
645 | } |
9e353e3b |
646 | return 0; |
647 | } |
648 | |
649 | #undef PerlIO_has_cntptr |
650 | int |
651 | PerlIO_has_cntptr(PerlIO *f) |
652 | { |
653 | if (f && *f) |
654 | { |
655 | PerlIO_funcs *tab = PerlIOBase(f)->tab; |
656 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); |
657 | } |
658 | return 0; |
659 | } |
660 | |
661 | #undef PerlIO_canset_cnt |
662 | int |
663 | PerlIO_canset_cnt(PerlIO *f) |
664 | { |
665 | if (f && *f) |
666 | { |
c7fc522f |
667 | PerlIOl *l = PerlIOBase(f); |
668 | return (l->tab->Set_ptrcnt != NULL); |
9e353e3b |
669 | } |
c7fc522f |
670 | return 0; |
760ac839 |
671 | } |
672 | |
673 | #undef PerlIO_get_base |
888911fc |
674 | STDCHAR * |
a20bf0c3 |
675 | PerlIO_get_base(PerlIO *f) |
760ac839 |
676 | { |
9e353e3b |
677 | return (*PerlIOBase(f)->tab->Get_base)(f); |
678 | } |
679 | |
680 | #undef PerlIO_get_bufsiz |
681 | int |
682 | PerlIO_get_bufsiz(PerlIO *f) |
683 | { |
684 | return (*PerlIOBase(f)->tab->Get_bufsiz)(f); |
685 | } |
686 | |
687 | #undef PerlIO_get_ptr |
688 | STDCHAR * |
689 | PerlIO_get_ptr(PerlIO *f) |
690 | { |
691 | return (*PerlIOBase(f)->tab->Get_ptr)(f); |
692 | } |
693 | |
694 | #undef PerlIO_get_cnt |
05d1247b |
695 | int |
9e353e3b |
696 | PerlIO_get_cnt(PerlIO *f) |
697 | { |
698 | return (*PerlIOBase(f)->tab->Get_cnt)(f); |
699 | } |
700 | |
701 | #undef PerlIO_set_cnt |
702 | void |
05d1247b |
703 | PerlIO_set_cnt(PerlIO *f,int cnt) |
9e353e3b |
704 | { |
f3862f8b |
705 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt); |
9e353e3b |
706 | } |
707 | |
708 | #undef PerlIO_set_ptrcnt |
709 | void |
05d1247b |
710 | PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) |
9e353e3b |
711 | { |
f3862f8b |
712 | (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt); |
9e353e3b |
713 | } |
714 | |
715 | /*--------------------------------------------------------------------------------------*/ |
716 | /* "Methods" of the "base class" */ |
717 | |
718 | IV |
719 | PerlIOBase_fileno(PerlIO *f) |
720 | { |
721 | return PerlIO_fileno(PerlIONext(f)); |
722 | } |
723 | |
724 | PerlIO * |
725 | PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode) |
726 | { |
727 | PerlIOl *l = NULL; |
728 | Newc('L',l,tab->size,char,PerlIOl); |
729 | if (l) |
6f9d8c32 |
730 | { |
9e353e3b |
731 | Zero(l,tab->size,char); |
732 | l->next = *f; |
733 | l->tab = tab; |
734 | *f = l; |
06da4f11 |
735 | if ((*l->tab->Pushed)(f,mode) != 0) |
736 | { |
737 | PerlIO_pop(f); |
738 | return NULL; |
739 | } |
6f9d8c32 |
740 | } |
9e353e3b |
741 | return f; |
760ac839 |
742 | } |
743 | |
9e353e3b |
744 | SSize_t |
745 | PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count) |
746 | { |
747 | Off_t old = PerlIO_tell(f); |
748 | if (PerlIO_seek(f,-((Off_t)count),SEEK_CUR) == 0) |
749 | { |
750 | Off_t new = PerlIO_tell(f); |
751 | return old - new; |
752 | } |
753 | return 0; |
754 | } |
755 | |
756 | IV |
06da4f11 |
757 | PerlIOBase_noop_ok(PerlIO *f) |
9e353e3b |
758 | { |
759 | return 0; |
760 | } |
761 | |
762 | IV |
06da4f11 |
763 | PerlIOBase_noop_fail(PerlIO *f) |
764 | { |
765 | return -1; |
766 | } |
767 | |
768 | IV |
9e353e3b |
769 | PerlIOBase_close(PerlIO *f) |
770 | { |
771 | IV code = 0; |
772 | if (PerlIO_flush(f) != 0) |
773 | code = -1; |
774 | if (PerlIO_close(PerlIONext(f)) != 0) |
775 | code = -1; |
776 | PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN); |
777 | return code; |
778 | } |
779 | |
780 | IV |
781 | PerlIOBase_eof(PerlIO *f) |
782 | { |
783 | if (f && *f) |
784 | { |
785 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
786 | } |
787 | return 1; |
788 | } |
789 | |
790 | IV |
791 | PerlIOBase_error(PerlIO *f) |
792 | { |
793 | if (f && *f) |
794 | { |
795 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
796 | } |
797 | return 1; |
798 | } |
799 | |
800 | void |
801 | PerlIOBase_clearerr(PerlIO *f) |
802 | { |
803 | if (f && *f) |
804 | { |
805 | PerlIOBase(f)->flags &= ~PERLIO_F_ERROR; |
806 | } |
807 | } |
808 | |
809 | void |
810 | PerlIOBase_setlinebuf(PerlIO *f) |
811 | { |
812 | |
813 | } |
814 | |
815 | |
816 | |
817 | /*--------------------------------------------------------------------------------------*/ |
818 | /* Bottom-most level for UNIX-like case */ |
819 | |
820 | typedef struct |
821 | { |
822 | struct _PerlIO base; /* The generic part */ |
823 | int fd; /* UNIX like file descriptor */ |
824 | int oflags; /* open/fcntl flags */ |
825 | } PerlIOUnix; |
826 | |
6f9d8c32 |
827 | int |
9e353e3b |
828 | PerlIOUnix_oflags(const char *mode) |
760ac839 |
829 | { |
9e353e3b |
830 | int oflags = -1; |
831 | switch(*mode) |
832 | { |
833 | case 'r': |
834 | oflags = O_RDONLY; |
835 | if (*++mode == '+') |
836 | { |
837 | oflags = O_RDWR; |
838 | mode++; |
839 | } |
840 | break; |
841 | |
842 | case 'w': |
843 | oflags = O_CREAT|O_TRUNC; |
844 | if (*++mode == '+') |
845 | { |
846 | oflags |= O_RDWR; |
847 | mode++; |
848 | } |
849 | else |
850 | oflags |= O_WRONLY; |
851 | break; |
852 | |
853 | case 'a': |
854 | oflags = O_CREAT|O_APPEND; |
855 | if (*++mode == '+') |
856 | { |
857 | oflags |= O_RDWR; |
858 | mode++; |
859 | } |
860 | else |
861 | oflags |= O_WRONLY; |
862 | break; |
863 | } |
864 | if (*mode || oflags == -1) |
6f9d8c32 |
865 | { |
9e353e3b |
866 | errno = EINVAL; |
867 | oflags = -1; |
6f9d8c32 |
868 | } |
9e353e3b |
869 | return oflags; |
870 | } |
871 | |
872 | IV |
873 | PerlIOUnix_fileno(PerlIO *f) |
874 | { |
875 | return PerlIOSelf(f,PerlIOUnix)->fd; |
876 | } |
877 | |
878 | PerlIO * |
06da4f11 |
879 | PerlIOUnix_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
880 | { |
881 | PerlIO *f = NULL; |
c7fc522f |
882 | if (*mode == 'I') |
883 | mode++; |
9e353e3b |
884 | if (fd >= 0) |
885 | { |
886 | int oflags = PerlIOUnix_oflags(mode); |
887 | if (oflags != -1) |
888 | { |
06da4f11 |
889 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); |
9e353e3b |
890 | s->fd = fd; |
891 | s->oflags = oflags; |
892 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
893 | } |
894 | } |
895 | return f; |
896 | } |
897 | |
898 | PerlIO * |
06da4f11 |
899 | PerlIOUnix_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
900 | { |
901 | PerlIO *f = NULL; |
902 | int oflags = PerlIOUnix_oflags(mode); |
903 | if (oflags != -1) |
904 | { |
905 | int fd = open(path,oflags,0666); |
906 | if (fd >= 0) |
907 | { |
06da4f11 |
908 | PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); |
9e353e3b |
909 | s->fd = fd; |
910 | s->oflags = oflags; |
911 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
912 | } |
913 | } |
914 | return f; |
760ac839 |
915 | } |
916 | |
760ac839 |
917 | int |
9e353e3b |
918 | PerlIOUnix_reopen(const char *path, const char *mode, PerlIO *f) |
760ac839 |
919 | { |
9e353e3b |
920 | PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix); |
921 | int oflags = PerlIOUnix_oflags(mode); |
922 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) |
923 | (*PerlIOBase(f)->tab->Close)(f); |
924 | if (oflags != -1) |
925 | { |
926 | int fd = open(path,oflags,0666); |
927 | if (fd >= 0) |
928 | { |
929 | s->fd = fd; |
930 | s->oflags = oflags; |
931 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
932 | return 0; |
933 | } |
934 | } |
935 | return -1; |
936 | } |
937 | |
938 | SSize_t |
939 | PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count) |
940 | { |
941 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
8f24bd79 |
942 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
943 | return 0; |
9e353e3b |
944 | while (1) |
945 | { |
946 | SSize_t len = read(fd,vbuf,count); |
947 | if (len >= 0 || errno != EINTR) |
06da4f11 |
948 | { |
949 | if (len < 0) |
950 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
951 | else if (len == 0 && count != 0) |
952 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
953 | return len; |
954 | } |
9e353e3b |
955 | } |
956 | } |
957 | |
958 | SSize_t |
959 | PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count) |
960 | { |
961 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
962 | while (1) |
963 | { |
964 | SSize_t len = write(fd,vbuf,count); |
965 | if (len >= 0 || errno != EINTR) |
06da4f11 |
966 | { |
967 | if (len < 0) |
968 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
969 | return len; |
970 | } |
9e353e3b |
971 | } |
972 | } |
973 | |
974 | IV |
975 | PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence) |
976 | { |
977 | Off_t new = lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence); |
06da4f11 |
978 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
9e353e3b |
979 | return (new == (Off_t) -1) ? -1 : 0; |
980 | } |
981 | |
982 | Off_t |
983 | PerlIOUnix_tell(PerlIO *f) |
984 | { |
985 | return lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); |
986 | } |
987 | |
988 | IV |
989 | PerlIOUnix_close(PerlIO *f) |
990 | { |
991 | int fd = PerlIOSelf(f,PerlIOUnix)->fd; |
992 | int code = 0; |
993 | while (close(fd) != 0) |
994 | { |
995 | if (errno != EINTR) |
996 | { |
997 | code = -1; |
998 | break; |
999 | } |
1000 | } |
1001 | if (code == 0) |
1002 | { |
1003 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
1004 | } |
1005 | return code; |
1006 | } |
1007 | |
1008 | PerlIO_funcs PerlIO_unix = { |
1009 | "unix", |
1010 | sizeof(PerlIOUnix), |
1011 | 0, |
1012 | PerlIOUnix_fileno, |
1013 | PerlIOUnix_fdopen, |
1014 | PerlIOUnix_open, |
1015 | PerlIOUnix_reopen, |
06da4f11 |
1016 | PerlIOBase_pushed, |
1017 | PerlIOBase_noop_ok, |
9e353e3b |
1018 | PerlIOUnix_read, |
1019 | PerlIOBase_unread, |
1020 | PerlIOUnix_write, |
1021 | PerlIOUnix_seek, |
1022 | PerlIOUnix_tell, |
1023 | PerlIOUnix_close, |
06da4f11 |
1024 | PerlIOBase_noop_ok, |
1025 | PerlIOBase_noop_fail, |
9e353e3b |
1026 | PerlIOBase_eof, |
1027 | PerlIOBase_error, |
1028 | PerlIOBase_clearerr, |
1029 | PerlIOBase_setlinebuf, |
1030 | NULL, /* get_base */ |
1031 | NULL, /* get_bufsiz */ |
1032 | NULL, /* get_ptr */ |
1033 | NULL, /* get_cnt */ |
1034 | NULL, /* set_ptrcnt */ |
1035 | }; |
1036 | |
1037 | /*--------------------------------------------------------------------------------------*/ |
1038 | /* stdio as a layer */ |
1039 | |
c512ea76 |
1040 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FSEEKO) && !defined(USE_FSEEK64) |
1041 | #define fseek fseeko |
1042 | #endif |
1043 | |
1044 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FTELLO) && !defined(USE_FTELL64) |
1045 | #define ftell ftello |
1046 | #endif |
1047 | |
1048 | |
9e353e3b |
1049 | typedef struct |
1050 | { |
1051 | struct _PerlIO base; |
1052 | FILE * stdio; /* The stream */ |
1053 | } PerlIOStdio; |
1054 | |
1055 | IV |
1056 | PerlIOStdio_fileno(PerlIO *f) |
1057 | { |
1058 | return fileno(PerlIOSelf(f,PerlIOStdio)->stdio); |
1059 | } |
1060 | |
1061 | |
1062 | PerlIO * |
06da4f11 |
1063 | PerlIOStdio_fdopen(PerlIO_funcs *self, int fd,const char *mode) |
9e353e3b |
1064 | { |
1065 | PerlIO *f = NULL; |
c7fc522f |
1066 | int init = 0; |
1067 | if (*mode == 'I') |
1068 | { |
1069 | init = 1; |
1070 | mode++; |
1071 | } |
9e353e3b |
1072 | if (fd >= 0) |
1073 | { |
c7fc522f |
1074 | FILE *stdio = NULL; |
1075 | if (init) |
1076 | { |
1077 | switch(fd) |
1078 | { |
1079 | case 0: |
1080 | stdio = stdin; |
1081 | break; |
1082 | case 1: |
1083 | stdio = stdout; |
1084 | break; |
1085 | case 2: |
1086 | stdio = stderr; |
1087 | break; |
1088 | } |
1089 | } |
1090 | else |
1091 | stdio = fdopen(fd,mode); |
9e353e3b |
1092 | if (stdio) |
1093 | { |
06da4f11 |
1094 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); |
9e353e3b |
1095 | s->stdio = stdio; |
1096 | } |
1097 | } |
1098 | return f; |
1099 | } |
1100 | |
1101 | #undef PerlIO_importFILE |
1102 | PerlIO * |
1103 | PerlIO_importFILE(FILE *stdio, int fl) |
1104 | { |
1105 | PerlIO *f = NULL; |
1106 | if (stdio) |
1107 | { |
1108 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,"r+"),PerlIOStdio); |
1109 | s->stdio = stdio; |
1110 | } |
1111 | return f; |
1112 | } |
1113 | |
1114 | PerlIO * |
06da4f11 |
1115 | PerlIOStdio_open(PerlIO_funcs *self, const char *path,const char *mode) |
9e353e3b |
1116 | { |
1117 | PerlIO *f = NULL; |
1118 | FILE *stdio = fopen(path,mode); |
1119 | if (stdio) |
1120 | { |
06da4f11 |
1121 | PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); |
9e353e3b |
1122 | s->stdio = stdio; |
1123 | } |
1124 | return f; |
760ac839 |
1125 | } |
1126 | |
6f9d8c32 |
1127 | int |
9e353e3b |
1128 | PerlIOStdio_reopen(const char *path, const char *mode, PerlIO *f) |
1129 | { |
1130 | PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); |
1131 | FILE *stdio = freopen(path,mode,s->stdio); |
1132 | if (!s->stdio) |
1133 | return -1; |
1134 | s->stdio = stdio; |
1135 | return 0; |
1136 | } |
1137 | |
1138 | SSize_t |
1139 | PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count) |
1140 | { |
1141 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
c7fc522f |
1142 | SSize_t got = 0; |
9e353e3b |
1143 | if (count == 1) |
1144 | { |
1145 | STDCHAR *buf = (STDCHAR *) vbuf; |
1146 | /* Perl is expecting PerlIO_getc() to fill the buffer |
1147 | * Linux's stdio does not do that for fread() |
1148 | */ |
1149 | int ch = fgetc(s); |
1150 | if (ch != EOF) |
1151 | { |
1152 | *buf = ch; |
c7fc522f |
1153 | got = 1; |
9e353e3b |
1154 | } |
9e353e3b |
1155 | } |
c7fc522f |
1156 | else |
1157 | got = fread(vbuf,1,count,s); |
1158 | return got; |
9e353e3b |
1159 | } |
1160 | |
1161 | SSize_t |
1162 | PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count) |
1163 | { |
1164 | FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; |
1165 | STDCHAR *buf = ((STDCHAR *)vbuf)+count-1; |
1166 | SSize_t unread = 0; |
1167 | while (count > 0) |
1168 | { |
1169 | int ch = *buf-- & 0xff; |
1170 | if (ungetc(ch,s) != ch) |
1171 | break; |
1172 | unread++; |
1173 | count--; |
1174 | } |
1175 | return unread; |
1176 | } |
1177 | |
1178 | SSize_t |
1179 | PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count) |
1180 | { |
1181 | return fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio); |
1182 | } |
1183 | |
1184 | IV |
1185 | PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence) |
1186 | { |
c7fc522f |
1187 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1188 | return fseek(stdio,offset,whence); |
9e353e3b |
1189 | } |
1190 | |
1191 | Off_t |
1192 | PerlIOStdio_tell(PerlIO *f) |
1193 | { |
c7fc522f |
1194 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1195 | return ftell(stdio); |
9e353e3b |
1196 | } |
1197 | |
1198 | IV |
1199 | PerlIOStdio_close(PerlIO *f) |
1200 | { |
1201 | return fclose(PerlIOSelf(f,PerlIOStdio)->stdio); |
1202 | } |
1203 | |
1204 | IV |
1205 | PerlIOStdio_flush(PerlIO *f) |
1206 | { |
1207 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1208 | return fflush(stdio); |
1209 | } |
1210 | |
1211 | IV |
06da4f11 |
1212 | PerlIOStdio_fill(PerlIO *f) |
1213 | { |
1214 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1215 | int c; |
1216 | if (fflush(stdio) != 0) |
1217 | return EOF; |
1218 | c = fgetc(stdio); |
1219 | if (c == EOF || ungetc(c,stdio) != c) |
1220 | return EOF; |
1221 | return 0; |
1222 | } |
1223 | |
1224 | IV |
9e353e3b |
1225 | PerlIOStdio_eof(PerlIO *f) |
1226 | { |
1227 | return feof(PerlIOSelf(f,PerlIOStdio)->stdio); |
1228 | } |
1229 | |
1230 | IV |
1231 | PerlIOStdio_error(PerlIO *f) |
1232 | { |
1233 | return ferror(PerlIOSelf(f,PerlIOStdio)->stdio); |
1234 | } |
1235 | |
1236 | void |
1237 | PerlIOStdio_clearerr(PerlIO *f) |
1238 | { |
1239 | clearerr(PerlIOSelf(f,PerlIOStdio)->stdio); |
1240 | } |
1241 | |
1242 | void |
1243 | PerlIOStdio_setlinebuf(PerlIO *f) |
1244 | { |
1245 | #ifdef HAS_SETLINEBUF |
1246 | setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio); |
1247 | #else |
1248 | setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0); |
1249 | #endif |
1250 | } |
1251 | |
1252 | #ifdef FILE_base |
1253 | STDCHAR * |
1254 | PerlIOStdio_get_base(PerlIO *f) |
1255 | { |
1256 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1257 | return FILE_base(stdio); |
1258 | } |
1259 | |
1260 | Size_t |
1261 | PerlIOStdio_get_bufsiz(PerlIO *f) |
1262 | { |
1263 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1264 | return FILE_bufsiz(stdio); |
1265 | } |
1266 | #endif |
1267 | |
1268 | #ifdef USE_STDIO_PTR |
1269 | STDCHAR * |
1270 | PerlIOStdio_get_ptr(PerlIO *f) |
1271 | { |
1272 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1273 | return FILE_ptr(stdio); |
1274 | } |
1275 | |
1276 | SSize_t |
1277 | PerlIOStdio_get_cnt(PerlIO *f) |
1278 | { |
1279 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1280 | return FILE_cnt(stdio); |
1281 | } |
1282 | |
1283 | void |
1284 | PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt) |
1285 | { |
1286 | FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; |
1287 | if (ptr != NULL) |
1288 | { |
1289 | #ifdef STDIO_PTR_LVALUE |
1290 | FILE_ptr(stdio) = ptr; |
1291 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
1292 | if (FILE_cnt(stdio) != (cnt)) |
1293 | { |
1294 | dTHX; |
1295 | assert(FILE_cnt(stdio) == (cnt)); |
1296 | } |
1297 | #endif |
1298 | #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) |
1299 | /* Setting ptr _does_ change cnt - we are done */ |
1300 | return; |
1301 | #endif |
1302 | #else /* STDIO_PTR_LVALUE */ |
1303 | abort(); |
1304 | #endif /* STDIO_PTR_LVALUE */ |
1305 | } |
1306 | /* Now (or only) set cnt */ |
1307 | #ifdef STDIO_CNT_LVALUE |
1308 | FILE_cnt(stdio) = cnt; |
1309 | #else /* STDIO_CNT_LVALUE */ |
1310 | #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
1311 | FILE_ptr(stdio) = FILE_ptr(stdio)+(FILE_cnt(stdio)-cnt); |
1312 | #else /* STDIO_PTR_LVAL_SETS_CNT */ |
1313 | abort(); |
1314 | #endif /* STDIO_PTR_LVAL_SETS_CNT */ |
1315 | #endif /* STDIO_CNT_LVALUE */ |
1316 | } |
1317 | |
1318 | #endif |
1319 | |
1320 | PerlIO_funcs PerlIO_stdio = { |
1321 | "stdio", |
1322 | sizeof(PerlIOStdio), |
1323 | 0, |
1324 | PerlIOStdio_fileno, |
1325 | PerlIOStdio_fdopen, |
1326 | PerlIOStdio_open, |
1327 | PerlIOStdio_reopen, |
06da4f11 |
1328 | PerlIOBase_pushed, |
1329 | PerlIOBase_noop_ok, |
9e353e3b |
1330 | PerlIOStdio_read, |
1331 | PerlIOStdio_unread, |
1332 | PerlIOStdio_write, |
1333 | PerlIOStdio_seek, |
1334 | PerlIOStdio_tell, |
1335 | PerlIOStdio_close, |
1336 | PerlIOStdio_flush, |
06da4f11 |
1337 | PerlIOStdio_fill, |
9e353e3b |
1338 | PerlIOStdio_eof, |
1339 | PerlIOStdio_error, |
1340 | PerlIOStdio_clearerr, |
1341 | PerlIOStdio_setlinebuf, |
1342 | #ifdef FILE_base |
1343 | PerlIOStdio_get_base, |
1344 | PerlIOStdio_get_bufsiz, |
1345 | #else |
1346 | NULL, |
1347 | NULL, |
1348 | #endif |
1349 | #ifdef USE_STDIO_PTR |
1350 | PerlIOStdio_get_ptr, |
1351 | PerlIOStdio_get_cnt, |
0eb1d8a4 |
1352 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) |
9e353e3b |
1353 | PerlIOStdio_set_ptrcnt |
1354 | #else /* STDIO_PTR_LVALUE */ |
1355 | NULL |
1356 | #endif /* STDIO_PTR_LVALUE */ |
1357 | #else /* USE_STDIO_PTR */ |
1358 | NULL, |
1359 | NULL, |
1360 | NULL |
1361 | #endif /* USE_STDIO_PTR */ |
1362 | }; |
1363 | |
1364 | #undef PerlIO_exportFILE |
1365 | FILE * |
1366 | PerlIO_exportFILE(PerlIO *f, int fl) |
1367 | { |
1368 | PerlIO_flush(f); |
1369 | /* Should really push stdio discipline when we have them */ |
1370 | return fdopen(PerlIO_fileno(f),"r+"); |
1371 | } |
1372 | |
1373 | #undef PerlIO_findFILE |
1374 | FILE * |
1375 | PerlIO_findFILE(PerlIO *f) |
1376 | { |
1377 | return PerlIO_exportFILE(f,0); |
1378 | } |
1379 | |
1380 | #undef PerlIO_releaseFILE |
1381 | void |
1382 | PerlIO_releaseFILE(PerlIO *p, FILE *f) |
1383 | { |
1384 | } |
1385 | |
1386 | /*--------------------------------------------------------------------------------------*/ |
1387 | /* perlio buffer layer */ |
1388 | |
1389 | typedef struct |
760ac839 |
1390 | { |
9e353e3b |
1391 | struct _PerlIO base; |
1392 | Off_t posn; /* Offset of buf into the file */ |
1393 | STDCHAR * buf; /* Start of buffer */ |
1394 | STDCHAR * end; /* End of valid part of buffer */ |
1395 | STDCHAR * ptr; /* Current position in buffer */ |
1396 | Size_t bufsiz; /* Size of buffer */ |
1397 | IV oneword; /* Emergency buffer */ |
1398 | } PerlIOBuf; |
1399 | |
1400 | |
1401 | PerlIO * |
06da4f11 |
1402 | PerlIOBuf_fdopen(PerlIO_funcs *self, int fd, const char *mode) |
9e353e3b |
1403 | { |
1404 | PerlIO_funcs *tab = PerlIO_default_btm(); |
c7fc522f |
1405 | int init = 0; |
1406 | PerlIO *f; |
1407 | if (*mode == 'I') |
1408 | { |
1409 | init = 1; |
1410 | mode++; |
1411 | } |
06da4f11 |
1412 | f = (*tab->Fdopen)(tab,fd,mode); |
6f9d8c32 |
1413 | if (f) |
1414 | { |
c7fc522f |
1415 | /* Initial stderr is unbuffered */ |
1416 | if (!init || fd != 2) |
1417 | { |
06da4f11 |
1418 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); |
c7fc522f |
1419 | b->posn = PerlIO_tell(PerlIONext(f)); |
1420 | } |
6f9d8c32 |
1421 | } |
9e353e3b |
1422 | return f; |
760ac839 |
1423 | } |
1424 | |
9e353e3b |
1425 | PerlIO * |
06da4f11 |
1426 | PerlIOBuf_open(PerlIO_funcs *self, const char *path, const char *mode) |
8c86a920 |
1427 | { |
9e353e3b |
1428 | PerlIO_funcs *tab = PerlIO_default_btm(); |
06da4f11 |
1429 | PerlIO *f = (*tab->Open)(tab,path,mode); |
9e353e3b |
1430 | if (f) |
1431 | { |
06da4f11 |
1432 | PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); |
9e353e3b |
1433 | b->posn = 0; |
1434 | } |
1435 | return f; |
1436 | } |
1437 | |
1438 | int |
1439 | PerlIOBase_reopen(const char *path, const char *mode, PerlIO *f) |
1440 | { |
1441 | return (*PerlIOBase(f)->tab->Reopen)(path,mode,PerlIONext(f)); |
1442 | } |
1443 | |
9e353e3b |
1444 | /* This "flush" is akin to sfio's sync in that it handles files in either |
1445 | read or write state |
1446 | */ |
1447 | IV |
1448 | PerlIOBuf_flush(PerlIO *f) |
6f9d8c32 |
1449 | { |
9e353e3b |
1450 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1451 | int code = 0; |
1452 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1453 | { |
1454 | /* write() the buffer */ |
1455 | STDCHAR *p = b->buf; |
1456 | int count; |
1457 | while (p < b->ptr) |
1458 | { |
1459 | count = PerlIO_write(PerlIONext(f),p,b->ptr - p); |
1460 | if (count > 0) |
1461 | { |
1462 | p += count; |
1463 | } |
1464 | else if (count < 0) |
1465 | { |
1466 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1467 | code = -1; |
1468 | break; |
1469 | } |
1470 | } |
1471 | b->posn += (p - b->buf); |
1472 | } |
1473 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
6f9d8c32 |
1474 | { |
9e353e3b |
1475 | /* Note position change */ |
1476 | b->posn += (b->ptr - b->buf); |
1477 | if (b->ptr < b->end) |
1478 | { |
1479 | /* We did not consume all of it */ |
1480 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0) |
1481 | { |
1482 | b->posn = PerlIO_tell(PerlIONext(f)); |
1483 | } |
1484 | } |
6f9d8c32 |
1485 | } |
9e353e3b |
1486 | b->ptr = b->end = b->buf; |
1487 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
1488 | if (PerlIO_flush(PerlIONext(f)) != 0) |
1489 | code = -1; |
1490 | return code; |
6f9d8c32 |
1491 | } |
1492 | |
06da4f11 |
1493 | IV |
1494 | PerlIOBuf_fill(PerlIO *f) |
1495 | { |
1496 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1497 | SSize_t avail; |
1498 | if (PerlIO_flush(f) != 0) |
1499 | return -1; |
1500 | b->ptr = b->end = b->buf; |
1501 | avail = PerlIO_read(PerlIONext(f),b->ptr,b->bufsiz); |
1502 | if (avail <= 0) |
1503 | { |
1504 | if (avail == 0) |
1505 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
1506 | else |
1507 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
1508 | return -1; |
1509 | } |
1510 | b->end = b->buf+avail; |
1511 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
1512 | return 0; |
1513 | } |
1514 | |
6f9d8c32 |
1515 | SSize_t |
9e353e3b |
1516 | PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 |
1517 | { |
9e353e3b |
1518 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
6f9d8c32 |
1519 | STDCHAR *buf = (STDCHAR *) vbuf; |
1520 | if (f) |
1521 | { |
1522 | Size_t got = 0; |
9e353e3b |
1523 | if (!b->ptr) |
06da4f11 |
1524 | PerlIO_get_base(f); |
9e353e3b |
1525 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) |
f89522bf |
1526 | return 0; |
6f9d8c32 |
1527 | while (count > 0) |
1528 | { |
9e353e3b |
1529 | SSize_t avail = (b->end - b->ptr); |
6f9d8c32 |
1530 | if ((SSize_t) count < avail) |
1531 | avail = count; |
1532 | if (avail > 0) |
1533 | { |
9e353e3b |
1534 | Copy(b->ptr,buf,avail,char); |
6f9d8c32 |
1535 | got += avail; |
9e353e3b |
1536 | b->ptr += avail; |
6f9d8c32 |
1537 | count -= avail; |
1538 | buf += avail; |
1539 | } |
9e353e3b |
1540 | if (count && (b->ptr >= b->end)) |
6f9d8c32 |
1541 | { |
06da4f11 |
1542 | if (PerlIO_fill(f) != 0) |
1543 | break; |
6f9d8c32 |
1544 | } |
1545 | } |
1546 | return got; |
1547 | } |
1548 | return 0; |
1549 | } |
1550 | |
9e353e3b |
1551 | SSize_t |
1552 | PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
1553 | { |
9e353e3b |
1554 | const STDCHAR *buf = (const STDCHAR *) vbuf+count; |
1555 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1556 | SSize_t unread = 0; |
1557 | SSize_t avail; |
9e353e3b |
1558 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1559 | PerlIO_flush(f); |
06da4f11 |
1560 | if (!b->buf) |
1561 | PerlIO_get_base(f); |
9e353e3b |
1562 | if (b->buf) |
1563 | { |
1564 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
1565 | { |
1566 | avail = (b->ptr - b->buf); |
1567 | if (avail > (SSize_t) count) |
1568 | avail = count; |
1569 | b->ptr -= avail; |
1570 | } |
1571 | else |
1572 | { |
1573 | avail = b->bufsiz; |
1574 | if (avail > (SSize_t) count) |
1575 | avail = count; |
1576 | b->end = b->ptr + avail; |
1577 | } |
1578 | if (avail > 0) |
1579 | { |
1580 | buf -= avail; |
1581 | if (buf != b->ptr) |
1582 | { |
1583 | Copy(buf,b->ptr,avail,char); |
1584 | } |
1585 | count -= avail; |
1586 | unread += avail; |
1587 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
1588 | } |
1589 | } |
1590 | return unread; |
760ac839 |
1591 | } |
1592 | |
9e353e3b |
1593 | SSize_t |
1594 | PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count) |
760ac839 |
1595 | { |
9e353e3b |
1596 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1597 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
1598 | Size_t written = 0; |
1599 | if (!b->buf) |
06da4f11 |
1600 | PerlIO_get_base(f); |
9e353e3b |
1601 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
1602 | return 0; |
1603 | while (count > 0) |
1604 | { |
1605 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); |
1606 | if ((SSize_t) count < avail) |
1607 | avail = count; |
1608 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; |
1609 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) |
1610 | { |
1611 | while (avail > 0) |
1612 | { |
1613 | int ch = *buf++; |
1614 | *(b->ptr)++ = ch; |
1615 | count--; |
1616 | avail--; |
1617 | written++; |
1618 | if (ch == '\n') |
1619 | { |
1620 | PerlIO_flush(f); |
1621 | break; |
1622 | } |
1623 | } |
1624 | } |
1625 | else |
1626 | { |
1627 | if (avail) |
1628 | { |
1629 | Copy(buf,b->ptr,avail,char); |
1630 | count -= avail; |
1631 | buf += avail; |
1632 | written += avail; |
1633 | b->ptr += avail; |
1634 | } |
1635 | } |
1636 | if (b->ptr >= (b->buf + b->bufsiz)) |
1637 | PerlIO_flush(f); |
1638 | } |
1639 | return written; |
1640 | } |
1641 | |
1642 | IV |
1643 | PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence) |
1644 | { |
1645 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
06da4f11 |
1646 | int code = PerlIO_flush(f); |
9e353e3b |
1647 | if (code == 0) |
1648 | { |
1649 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
1650 | code = PerlIO_seek(PerlIONext(f),offset,whence); |
1651 | if (code == 0) |
1652 | { |
1653 | b->posn = PerlIO_tell(PerlIONext(f)); |
1654 | } |
1655 | } |
1656 | return code; |
1657 | } |
1658 | |
1659 | Off_t |
1660 | PerlIOBuf_tell(PerlIO *f) |
1661 | { |
1662 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1663 | Off_t posn = b->posn; |
1664 | if (b->buf) |
1665 | posn += (b->ptr - b->buf); |
1666 | return posn; |
1667 | } |
1668 | |
1669 | IV |
1670 | PerlIOBuf_close(PerlIO *f) |
1671 | { |
1672 | IV code = PerlIOBase_close(f); |
1673 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1674 | if (b->buf && b->buf != (STDCHAR *) &b->oneword) |
6f9d8c32 |
1675 | { |
9e353e3b |
1676 | Safefree(b->buf); |
6f9d8c32 |
1677 | } |
9e353e3b |
1678 | b->buf = NULL; |
1679 | b->ptr = b->end = b->buf; |
1680 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
1681 | return code; |
760ac839 |
1682 | } |
1683 | |
760ac839 |
1684 | void |
9e353e3b |
1685 | PerlIOBuf_setlinebuf(PerlIO *f) |
760ac839 |
1686 | { |
6f9d8c32 |
1687 | if (f) |
1688 | { |
9e353e3b |
1689 | PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF; |
6f9d8c32 |
1690 | } |
760ac839 |
1691 | } |
1692 | |
760ac839 |
1693 | void |
9e353e3b |
1694 | PerlIOBuf_set_cnt(PerlIO *f, int cnt) |
760ac839 |
1695 | { |
9e353e3b |
1696 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1697 | dTHX; |
1698 | if (!b->buf) |
06da4f11 |
1699 | PerlIO_get_base(f); |
9e353e3b |
1700 | b->ptr = b->end - cnt; |
1701 | assert(b->ptr >= b->buf); |
1702 | } |
1703 | |
1704 | STDCHAR * |
1705 | PerlIOBuf_get_ptr(PerlIO *f) |
1706 | { |
1707 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1708 | if (!b->buf) |
06da4f11 |
1709 | PerlIO_get_base(f); |
9e353e3b |
1710 | return b->ptr; |
1711 | } |
1712 | |
05d1247b |
1713 | SSize_t |
9e353e3b |
1714 | PerlIOBuf_get_cnt(PerlIO *f) |
1715 | { |
1716 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1717 | if (!b->buf) |
06da4f11 |
1718 | PerlIO_get_base(f); |
9e353e3b |
1719 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
1720 | return (b->end - b->ptr); |
1721 | return 0; |
1722 | } |
1723 | |
1724 | STDCHAR * |
1725 | PerlIOBuf_get_base(PerlIO *f) |
1726 | { |
1727 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1728 | if (!b->buf) |
06da4f11 |
1729 | { |
1730 | if (!b->bufsiz) |
1731 | b->bufsiz = 4096; |
1732 | New('B',b->buf,b->bufsiz,STDCHAR); |
1733 | if (!b->buf) |
1734 | { |
1735 | b->buf = (STDCHAR *)&b->oneword; |
1736 | b->bufsiz = sizeof(b->oneword); |
1737 | } |
1738 | b->ptr = b->buf; |
1739 | b->end = b->ptr; |
1740 | } |
9e353e3b |
1741 | return b->buf; |
1742 | } |
1743 | |
1744 | Size_t |
1745 | PerlIOBuf_bufsiz(PerlIO *f) |
1746 | { |
1747 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1748 | if (!b->buf) |
06da4f11 |
1749 | PerlIO_get_base(f); |
9e353e3b |
1750 | return (b->end - b->buf); |
1751 | } |
1752 | |
1753 | void |
05d1247b |
1754 | PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
9e353e3b |
1755 | { |
1756 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1757 | if (!b->buf) |
06da4f11 |
1758 | PerlIO_get_base(f); |
9e353e3b |
1759 | b->ptr = ptr; |
1760 | if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) |
6f9d8c32 |
1761 | { |
9e353e3b |
1762 | dTHX; |
1763 | assert(PerlIO_get_cnt(f) == cnt); |
1764 | assert(b->ptr >= b->buf); |
6f9d8c32 |
1765 | } |
9e353e3b |
1766 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 |
1767 | } |
1768 | |
9e353e3b |
1769 | PerlIO_funcs PerlIO_perlio = { |
1770 | "perlio", |
1771 | sizeof(PerlIOBuf), |
1772 | 0, |
1773 | PerlIOBase_fileno, |
1774 | PerlIOBuf_fdopen, |
1775 | PerlIOBuf_open, |
1776 | PerlIOBase_reopen, |
06da4f11 |
1777 | PerlIOBase_pushed, |
1778 | PerlIOBase_noop_ok, |
9e353e3b |
1779 | PerlIOBuf_read, |
1780 | PerlIOBuf_unread, |
1781 | PerlIOBuf_write, |
1782 | PerlIOBuf_seek, |
1783 | PerlIOBuf_tell, |
1784 | PerlIOBuf_close, |
1785 | PerlIOBuf_flush, |
06da4f11 |
1786 | PerlIOBuf_fill, |
9e353e3b |
1787 | PerlIOBase_eof, |
1788 | PerlIOBase_error, |
1789 | PerlIOBase_clearerr, |
1790 | PerlIOBuf_setlinebuf, |
1791 | PerlIOBuf_get_base, |
1792 | PerlIOBuf_bufsiz, |
1793 | PerlIOBuf_get_ptr, |
1794 | PerlIOBuf_get_cnt, |
1795 | PerlIOBuf_set_ptrcnt, |
1796 | }; |
1797 | |
06da4f11 |
1798 | #ifdef HAS_MMAP |
1799 | /*--------------------------------------------------------------------------------------*/ |
1800 | /* mmap as "buffer" layer */ |
1801 | |
1802 | typedef struct |
1803 | { |
1804 | PerlIOBuf base; /* PerlIOBuf stuff */ |
1805 | Size_t len; /* mapped length */ |
1806 | STDCHAR *bbuf; /* malloced buffer if map fails */ |
1807 | } PerlIOMmap; |
1808 | |
1809 | IV |
1810 | PerlIOMmap_map(PerlIO *f) |
1811 | { |
1812 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1813 | PerlIOBuf *b = &m->base; |
1814 | IV flags = PerlIOBase(f)->flags; |
1815 | IV code = 0; |
1816 | if (m->len) |
1817 | abort(); |
1818 | if (flags & PERLIO_F_CANREAD) |
1819 | { |
1820 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1821 | int fd = PerlIO_fileno(f); |
1822 | struct stat st; |
1823 | code = fstat(fd,&st); |
1824 | if (code == 0 && S_ISREG(st.st_mode)) |
1825 | { |
1826 | SSize_t len = st.st_size - b->posn; |
1827 | if (len > 0) |
1828 | { |
1829 | b->buf = (STDCHAR *) mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, b->posn); |
06da4f11 |
1830 | if (b->buf && b->buf != (STDCHAR *) -1) |
1831 | { |
1832 | #if defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) |
4a4a6116 |
1833 | madvise((Mmap_t) b->buf, len, MADV_SEQUENTIAL); |
06da4f11 |
1834 | #endif |
1835 | PerlIOBase(f)->flags = flags | PERLIO_F_RDBUF; |
1836 | b->end = b->buf+len; |
1837 | b->ptr = b->buf; |
1838 | m->len = len; |
1839 | } |
1840 | else |
1841 | { |
1842 | b->buf = NULL; |
1843 | } |
1844 | } |
1845 | else |
1846 | { |
1847 | PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF; |
1848 | b->buf = NULL; |
1849 | b->ptr = b->end = b->ptr; |
1850 | code = -1; |
1851 | } |
1852 | } |
1853 | } |
1854 | return code; |
1855 | } |
1856 | |
1857 | IV |
1858 | PerlIOMmap_unmap(PerlIO *f) |
1859 | { |
1860 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1861 | PerlIOBuf *b = &m->base; |
1862 | IV code = 0; |
1863 | if (m->len) |
1864 | { |
1865 | if (b->buf) |
1866 | { |
1867 | code = munmap((Mmap_t) b->buf, m->len); |
1868 | b->buf = NULL; |
1869 | m->len = 0; |
1870 | if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0) |
1871 | code = -1; |
06da4f11 |
1872 | } |
1873 | b->ptr = b->end = b->buf; |
1874 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
1875 | } |
1876 | return code; |
1877 | } |
1878 | |
1879 | STDCHAR * |
1880 | PerlIOMmap_get_base(PerlIO *f) |
1881 | { |
1882 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1883 | PerlIOBuf *b = &m->base; |
1884 | if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
1885 | { |
1886 | /* Already have a readbuffer in progress */ |
1887 | return b->buf; |
1888 | } |
1889 | if (b->buf) |
1890 | { |
1891 | /* We have a write buffer or flushed PerlIOBuf read buffer */ |
1892 | m->bbuf = b->buf; /* save it in case we need it again */ |
1893 | b->buf = NULL; /* Clear to trigger below */ |
1894 | } |
1895 | if (!b->buf) |
1896 | { |
1897 | PerlIOMmap_map(f); /* Try and map it */ |
1898 | if (!b->buf) |
1899 | { |
1900 | /* Map did not work - recover PerlIOBuf buffer if we have one */ |
1901 | b->buf = m->bbuf; |
1902 | } |
1903 | } |
1904 | b->ptr = b->end = b->buf; |
1905 | if (b->buf) |
1906 | return b->buf; |
1907 | return PerlIOBuf_get_base(f); |
1908 | } |
1909 | |
1910 | SSize_t |
1911 | PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count) |
1912 | { |
1913 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1914 | PerlIOBuf *b = &m->base; |
1915 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) |
1916 | PerlIO_flush(f); |
1917 | if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count)) |
1918 | { |
1919 | b->ptr -= count; |
1920 | PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; |
1921 | return count; |
1922 | } |
1923 | if (m->len) |
1924 | { |
4a4a6116 |
1925 | /* Loose the unwritable mapped buffer */ |
06da4f11 |
1926 | PerlIO_flush(f); |
1927 | } |
1928 | return PerlIOBuf_unread(f,vbuf,count); |
1929 | } |
1930 | |
1931 | SSize_t |
1932 | PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count) |
1933 | { |
1934 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1935 | PerlIOBuf *b = &m->base; |
1936 | if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) |
1937 | { |
1938 | /* No, or wrong sort of, buffer */ |
1939 | if (m->len) |
1940 | { |
1941 | if (PerlIOMmap_unmap(f) != 0) |
1942 | return 0; |
1943 | } |
1944 | /* If unmap took the "buffer" see if we have one from before */ |
1945 | if (!b->buf && m->bbuf) |
1946 | b->buf = m->bbuf; |
1947 | if (!b->buf) |
1948 | { |
1949 | PerlIOBuf_get_base(f); |
1950 | m->bbuf = b->buf; |
1951 | } |
1952 | } |
1953 | return PerlIOBuf_write(f,vbuf,count); |
1954 | } |
1955 | |
1956 | IV |
1957 | PerlIOMmap_flush(PerlIO *f) |
1958 | { |
1959 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
1960 | PerlIOBuf *b = &m->base; |
1961 | IV code = PerlIOBuf_flush(f); |
1962 | /* Now we are "synced" at PerlIOBuf level */ |
1963 | if (b->buf) |
1964 | { |
1965 | if (m->len) |
1966 | { |
1967 | /* Unmap the buffer */ |
1968 | if (PerlIOMmap_unmap(f) != 0) |
1969 | code = -1; |
1970 | } |
1971 | else |
1972 | { |
1973 | /* We seem to have a PerlIOBuf buffer which was not mapped |
1974 | * remember it in case we need one later |
1975 | */ |
1976 | m->bbuf = b->buf; |
1977 | } |
1978 | } |
06da4f11 |
1979 | return code; |
1980 | } |
1981 | |
1982 | IV |
1983 | PerlIOMmap_fill(PerlIO *f) |
1984 | { |
1985 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
1986 | IV code = PerlIO_flush(f); |
06da4f11 |
1987 | if (code == 0 && !b->buf) |
1988 | { |
1989 | code = PerlIOMmap_map(f); |
06da4f11 |
1990 | } |
1991 | if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) |
1992 | { |
1993 | code = PerlIOBuf_fill(f); |
06da4f11 |
1994 | } |
1995 | return code; |
1996 | } |
1997 | |
1998 | IV |
1999 | PerlIOMmap_close(PerlIO *f) |
2000 | { |
2001 | PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); |
2002 | PerlIOBuf *b = &m->base; |
2003 | IV code = PerlIO_flush(f); |
2004 | if (m->bbuf) |
2005 | { |
2006 | b->buf = m->bbuf; |
2007 | m->bbuf = NULL; |
2008 | b->ptr = b->end = b->buf; |
2009 | } |
2010 | if (PerlIOBuf_close(f) != 0) |
2011 | code = -1; |
06da4f11 |
2012 | return code; |
2013 | } |
2014 | |
2015 | |
2016 | PerlIO_funcs PerlIO_mmap = { |
2017 | "mmap", |
2018 | sizeof(PerlIOMmap), |
2019 | 0, |
2020 | PerlIOBase_fileno, |
2021 | PerlIOBuf_fdopen, |
2022 | PerlIOBuf_open, |
2023 | PerlIOBase_reopen, |
2024 | PerlIOBase_pushed, |
2025 | PerlIOBase_noop_ok, |
2026 | PerlIOBuf_read, |
2027 | PerlIOMmap_unread, |
2028 | PerlIOMmap_write, |
2029 | PerlIOBuf_seek, |
2030 | PerlIOBuf_tell, |
2031 | PerlIOBuf_close, |
2032 | PerlIOMmap_flush, |
2033 | PerlIOMmap_fill, |
2034 | PerlIOBase_eof, |
2035 | PerlIOBase_error, |
2036 | PerlIOBase_clearerr, |
2037 | PerlIOBuf_setlinebuf, |
2038 | PerlIOMmap_get_base, |
2039 | PerlIOBuf_bufsiz, |
2040 | PerlIOBuf_get_ptr, |
2041 | PerlIOBuf_get_cnt, |
2042 | PerlIOBuf_set_ptrcnt, |
2043 | }; |
2044 | |
2045 | #endif /* HAS_MMAP */ |
2046 | |
2047 | |
2048 | |
9e353e3b |
2049 | void |
2050 | PerlIO_init(void) |
760ac839 |
2051 | { |
9e353e3b |
2052 | if (!_perlio) |
6f9d8c32 |
2053 | { |
9e353e3b |
2054 | atexit(&PerlIO_cleanup); |
6f9d8c32 |
2055 | } |
760ac839 |
2056 | } |
2057 | |
9e353e3b |
2058 | #undef PerlIO_stdin |
2059 | PerlIO * |
2060 | PerlIO_stdin(void) |
2061 | { |
2062 | if (!_perlio) |
f3862f8b |
2063 | PerlIO_stdstreams(); |
05d1247b |
2064 | return &_perlio[1]; |
9e353e3b |
2065 | } |
2066 | |
2067 | #undef PerlIO_stdout |
2068 | PerlIO * |
2069 | PerlIO_stdout(void) |
2070 | { |
2071 | if (!_perlio) |
f3862f8b |
2072 | PerlIO_stdstreams(); |
05d1247b |
2073 | return &_perlio[2]; |
9e353e3b |
2074 | } |
2075 | |
2076 | #undef PerlIO_stderr |
2077 | PerlIO * |
2078 | PerlIO_stderr(void) |
2079 | { |
2080 | if (!_perlio) |
f3862f8b |
2081 | PerlIO_stdstreams(); |
05d1247b |
2082 | return &_perlio[3]; |
9e353e3b |
2083 | } |
2084 | |
2085 | /*--------------------------------------------------------------------------------------*/ |
2086 | |
2087 | #undef PerlIO_getname |
2088 | char * |
2089 | PerlIO_getname(PerlIO *f, char *buf) |
2090 | { |
2091 | dTHX; |
2092 | Perl_croak(aTHX_ "Don't know how to get file name"); |
2093 | return NULL; |
2094 | } |
2095 | |
2096 | |
2097 | /*--------------------------------------------------------------------------------------*/ |
2098 | /* Functions which can be called on any kind of PerlIO implemented |
2099 | in terms of above |
2100 | */ |
2101 | |
2102 | #undef PerlIO_getc |
6f9d8c32 |
2103 | int |
9e353e3b |
2104 | PerlIO_getc(PerlIO *f) |
760ac839 |
2105 | { |
313ca112 |
2106 | STDCHAR buf[1]; |
2107 | SSize_t count = PerlIO_read(f,buf,1); |
9e353e3b |
2108 | if (count == 1) |
313ca112 |
2109 | { |
2110 | return (unsigned char) buf[0]; |
2111 | } |
2112 | return EOF; |
2113 | } |
2114 | |
2115 | #undef PerlIO_ungetc |
2116 | int |
2117 | PerlIO_ungetc(PerlIO *f, int ch) |
2118 | { |
2119 | if (ch != EOF) |
2120 | { |
2121 | STDCHAR buf = ch; |
2122 | if (PerlIO_unread(f,&buf,1) == 1) |
2123 | return ch; |
2124 | } |
2125 | return EOF; |
760ac839 |
2126 | } |
2127 | |
9e353e3b |
2128 | #undef PerlIO_putc |
2129 | int |
2130 | PerlIO_putc(PerlIO *f, int ch) |
760ac839 |
2131 | { |
9e353e3b |
2132 | STDCHAR buf = ch; |
2133 | return PerlIO_write(f,&buf,1); |
760ac839 |
2134 | } |
2135 | |
9e353e3b |
2136 | #undef PerlIO_puts |
760ac839 |
2137 | int |
9e353e3b |
2138 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 |
2139 | { |
9e353e3b |
2140 | STRLEN len = strlen(s); |
2141 | return PerlIO_write(f,s,len); |
760ac839 |
2142 | } |
2143 | |
2144 | #undef PerlIO_rewind |
2145 | void |
c78749f2 |
2146 | PerlIO_rewind(PerlIO *f) |
760ac839 |
2147 | { |
6f9d8c32 |
2148 | PerlIO_seek(f,(Off_t)0,SEEK_SET); |
9e353e3b |
2149 | PerlIO_clearerr(f); |
6f9d8c32 |
2150 | } |
2151 | |
2152 | #undef PerlIO_vprintf |
2153 | int |
2154 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) |
2155 | { |
2156 | dTHX; |
bb9950b7 |
2157 | SV *sv = newSVpvn("",0); |
6f9d8c32 |
2158 | char *s; |
2159 | STRLEN len; |
2160 | sv_vcatpvf(sv, fmt, &ap); |
2161 | s = SvPV(sv,len); |
bb9950b7 |
2162 | return PerlIO_write(f,s,len); |
760ac839 |
2163 | } |
2164 | |
2165 | #undef PerlIO_printf |
6f9d8c32 |
2166 | int |
760ac839 |
2167 | PerlIO_printf(PerlIO *f,const char *fmt,...) |
760ac839 |
2168 | { |
2169 | va_list ap; |
2170 | int result; |
760ac839 |
2171 | va_start(ap,fmt); |
6f9d8c32 |
2172 | result = PerlIO_vprintf(f,fmt,ap); |
760ac839 |
2173 | va_end(ap); |
2174 | return result; |
2175 | } |
2176 | |
2177 | #undef PerlIO_stdoutf |
6f9d8c32 |
2178 | int |
760ac839 |
2179 | PerlIO_stdoutf(const char *fmt,...) |
760ac839 |
2180 | { |
2181 | va_list ap; |
2182 | int result; |
760ac839 |
2183 | va_start(ap,fmt); |
760ac839 |
2184 | result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); |
2185 | va_end(ap); |
2186 | return result; |
2187 | } |
2188 | |
2189 | #undef PerlIO_tmpfile |
2190 | PerlIO * |
c78749f2 |
2191 | PerlIO_tmpfile(void) |
760ac839 |
2192 | { |
6f9d8c32 |
2193 | dTHX; |
b1ef6e3b |
2194 | /* I have no idea how portable mkstemp() is ... */ |
6f9d8c32 |
2195 | SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0); |
2196 | int fd = mkstemp(SvPVX(sv)); |
2197 | PerlIO *f = NULL; |
2198 | if (fd >= 0) |
2199 | { |
b1ef6e3b |
2200 | f = PerlIO_fdopen(fd,"w+"); |
6f9d8c32 |
2201 | if (f) |
2202 | { |
9e353e3b |
2203 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; |
6f9d8c32 |
2204 | } |
2205 | unlink(SvPVX(sv)); |
2206 | SvREFCNT_dec(sv); |
2207 | } |
2208 | return f; |
760ac839 |
2209 | } |
2210 | |
6f9d8c32 |
2211 | #undef HAS_FSETPOS |
2212 | #undef HAS_FGETPOS |
2213 | |
760ac839 |
2214 | #endif /* USE_SFIO */ |
2215 | #endif /* PERLIO_IS_STDIO */ |
2216 | |
9e353e3b |
2217 | /*======================================================================================*/ |
2218 | /* Now some functions in terms of above which may be needed even if |
2219 | we are not in true PerlIO mode |
2220 | */ |
2221 | |
760ac839 |
2222 | #ifndef HAS_FSETPOS |
2223 | #undef PerlIO_setpos |
2224 | int |
c78749f2 |
2225 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
760ac839 |
2226 | { |
6f9d8c32 |
2227 | return PerlIO_seek(f,*pos,0); |
760ac839 |
2228 | } |
c411622e |
2229 | #else |
2230 | #ifndef PERLIO_IS_STDIO |
2231 | #undef PerlIO_setpos |
2232 | int |
c78749f2 |
2233 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
c411622e |
2234 | { |
2d4389e4 |
2235 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
2236 | return fsetpos64(f, pos); |
2237 | #else |
c411622e |
2238 | return fsetpos(f, pos); |
d9b3e12d |
2239 | #endif |
c411622e |
2240 | } |
2241 | #endif |
760ac839 |
2242 | #endif |
2243 | |
2244 | #ifndef HAS_FGETPOS |
2245 | #undef PerlIO_getpos |
2246 | int |
c78749f2 |
2247 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
760ac839 |
2248 | { |
2249 | *pos = PerlIO_tell(f); |
2250 | return 0; |
2251 | } |
c411622e |
2252 | #else |
2253 | #ifndef PERLIO_IS_STDIO |
2254 | #undef PerlIO_getpos |
2255 | int |
c78749f2 |
2256 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
c411622e |
2257 | { |
2d4389e4 |
2258 | #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
d9b3e12d |
2259 | return fgetpos64(f, pos); |
2260 | #else |
c411622e |
2261 | return fgetpos(f, pos); |
d9b3e12d |
2262 | #endif |
c411622e |
2263 | } |
2264 | #endif |
760ac839 |
2265 | #endif |
2266 | |
2267 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) |
2268 | |
2269 | int |
c78749f2 |
2270 | vprintf(char *pat, char *args) |
662a7e3f |
2271 | { |
2272 | _doprnt(pat, args, stdout); |
2273 | return 0; /* wrong, but perl doesn't use the return value */ |
2274 | } |
2275 | |
2276 | int |
c78749f2 |
2277 | vfprintf(FILE *fd, char *pat, char *args) |
760ac839 |
2278 | { |
2279 | _doprnt(pat, args, fd); |
2280 | return 0; /* wrong, but perl doesn't use the return value */ |
2281 | } |
2282 | |
2283 | #endif |
2284 | |
2285 | #ifndef PerlIO_vsprintf |
6f9d8c32 |
2286 | int |
8ac85365 |
2287 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
760ac839 |
2288 | { |
2289 | int val = vsprintf(s, fmt, ap); |
2290 | if (n >= 0) |
2291 | { |
8c86a920 |
2292 | if (strlen(s) >= (STRLEN)n) |
760ac839 |
2293 | { |
bf49b057 |
2294 | dTHX; |
2295 | PerlIO_puts(Perl_error_log,"panic: sprintf overflow - memory corrupted!\n"); |
2296 | my_exit(1); |
760ac839 |
2297 | } |
2298 | } |
2299 | return val; |
2300 | } |
2301 | #endif |
2302 | |
2303 | #ifndef PerlIO_sprintf |
6f9d8c32 |
2304 | int |
760ac839 |
2305 | PerlIO_sprintf(char *s, int n, const char *fmt,...) |
760ac839 |
2306 | { |
2307 | va_list ap; |
2308 | int result; |
760ac839 |
2309 | va_start(ap,fmt); |
760ac839 |
2310 | result = PerlIO_vsprintf(s, n, fmt, ap); |
2311 | va_end(ap); |
2312 | return result; |
2313 | } |
2314 | #endif |
2315 | |
c5be433b |
2316 | #endif /* !PERL_IMPLICIT_SYS */ |
2317 | |