Commit | Line | Data |
918951dd |
1 | /* |
c657f685 |
2 | * $Id: encoding.xs,v 0.3 2002/04/21 22:14:41 dankogai Exp $ |
918951dd |
3 | */ |
4 | |
59035dcc |
5 | #define PERL_NO_GET_CONTEXT |
6 | #include "EXTERN.h" |
7 | #include "perl.h" |
8 | #include "XSUB.h" |
9 | #define U8 U8 |
10 | |
11 | #if defined(USE_PERLIO) && !defined(USE_SFIO) |
12 | |
13 | /* Define an encoding "layer" in the perliol.h sense. |
14 | |
15 | The layer defined here "inherits" in an object-oriented sense from |
16 | the "perlio" layer with its PerlIOBuf_* "methods". The |
17 | implementation is particularly efficient as until Encode settles |
18 | down there is no point in tryint to tune it. |
19 | |
20 | The layer works by overloading the "fill" and "flush" methods. |
21 | |
22 | "fill" calls "SUPER::fill" in perl terms, then calls the encode OO |
23 | perl API to convert the encoded data to UTF-8 form, then copies it |
24 | back to the buffer. The "base class's" read methods then see the |
25 | UTF-8 data. |
26 | |
27 | "flush" transforms the UTF-8 data deposited by the "base class's |
28 | write method in the buffer back into the encoded form using the |
29 | encode OO perl API, then copies data back into the buffer and calls |
30 | "SUPER::flush. |
31 | |
32 | Note that "flush" is _also_ called for read mode - we still do the |
33 | (back)-translate so that the the base class's "flush" sees the |
34 | correct number of encoded chars for positioning the seek |
35 | pointer. (This double translation is the worst performance issue - |
36 | particularly with all-perl encode engine.) |
37 | |
38 | */ |
39 | |
40 | #include "perliol.h" |
41 | |
42 | typedef struct { |
43 | PerlIOBuf base; /* PerlIOBuf stuff */ |
44 | SV *bufsv; /* buffer seen by layers above */ |
45 | SV *dataSV; /* data we have read from layer below */ |
46 | SV *enc; /* the encoding object */ |
918951dd |
47 | SV *chk; /* CHECK in Encode methods */ |
c00aecee |
48 | int flags; /* Flags currently just needs lines */ |
59035dcc |
49 | } PerlIOEncode; |
50 | |
c00aecee |
51 | #define NEEDS_LINES 1 |
918951dd |
52 | |
59035dcc |
53 | SV * |
54 | PerlIOEncode_getarg(pTHX_ PerlIO * f, CLONE_PARAMS * param, int flags) |
55 | { |
56 | PerlIOEncode *e = PerlIOSelf(f, PerlIOEncode); |
57 | SV *sv = &PL_sv_undef; |
58 | if (e->enc) { |
59 | dSP; |
60 | ENTER; |
61 | SAVETMPS; |
62 | PUSHMARK(sp); |
63 | XPUSHs(e->enc); |
64 | PUTBACK; |
918951dd |
65 | if (call_method("name", G_SCALAR) == 1) { |
59035dcc |
66 | SPAGAIN; |
67 | sv = newSVsv(POPs); |
68 | PUTBACK; |
69 | } |
70 | } |
71 | return sv; |
72 | } |
73 | |
74 | IV |
75 | PerlIOEncode_pushed(pTHX_ PerlIO * f, const char *mode, SV * arg) |
76 | { |
77 | PerlIOEncode *e = PerlIOSelf(f, PerlIOEncode); |
78 | dSP; |
c657f685 |
79 | IV code = PerlIOBuf_pushed(aTHX_ f, mode, Nullsv); |
c00aecee |
80 | SV *result = Nullsv; |
c657f685 |
81 | |
82 | /* |
83 | * we now "use Encode qw(:fallbacks)" here instead of |
84 | * PerlIO/encoding.pm. This avoids SEGV when ":encoding()" |
85 | * is invoked without prior "use Encode". -- dankogai |
86 | */ |
87 | require_pv("Encode.pm"); |
88 | |
59035dcc |
89 | ENTER; |
90 | SAVETMPS; |
918951dd |
91 | |
92 | PUSHMARK(sp); |
59035dcc |
93 | XPUSHs(arg); |
94 | PUTBACK; |
918951dd |
95 | if (call_pv("Encode::find_encoding", G_SCALAR) != 1) { |
59035dcc |
96 | /* should never happen */ |
97 | Perl_die(aTHX_ "Encode::find_encoding did not return a value"); |
98 | return -1; |
99 | } |
100 | SPAGAIN; |
c00aecee |
101 | result = POPs; |
59035dcc |
102 | PUTBACK; |
918951dd |
103 | |
c00aecee |
104 | if (!SvROK(result) || !SvOBJECT(SvRV(result))) { |
59035dcc |
105 | e->enc = Nullsv; |
59035dcc |
106 | Perl_warner(aTHX_ packWARN(WARN_IO), "Cannot find encoding \"%" SVf "\"", |
c657f685 |
107 | arg); |
c00aecee |
108 | errno = EINVAL; |
59035dcc |
109 | code = -1; |
110 | } |
111 | else { |
c00aecee |
112 | #ifdef USE_NEW_SEQUENCE |
113 | PUSHMARK(sp); |
114 | XPUSHs(result); |
115 | PUTBACK; |
116 | if (call_method("new_sequence",G_SCALAR|G_EVAL) != 1 || SvTRUE(ERRSV)) { |
117 | Perl_warner(aTHX_ packWARN(WARN_IO), "\"%" SVf "\" does not support new_sequence", |
118 | arg); |
119 | } |
120 | else { |
121 | SPAGAIN; |
122 | result = POPs; |
123 | PUTBACK; |
124 | } |
125 | #endif |
126 | e->enc = newSVsv(result); |
127 | PUSHMARK(sp); |
128 | XPUSHs(e->enc); |
129 | PUTBACK; |
130 | if (call_method("needs_lines",G_SCALAR|G_EVAL) != 1 || SvTRUE(ERRSV)) { |
131 | Perl_warner(aTHX_ packWARN(WARN_IO), "\"%" SVf "\" does not support needs_lines", |
132 | arg); |
133 | } |
134 | else { |
135 | SPAGAIN; |
136 | result = POPs; |
137 | PUTBACK; |
138 | if (SvTRUE(result)) { |
139 | e->flags |= NEEDS_LINES; |
140 | } |
141 | } |
59035dcc |
142 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
143 | } |
c00aecee |
144 | |
c657f685 |
145 | if (SvIV(result = get_sv("PerlIO::encoding::check", 1)) == 0){ |
146 | PUSHMARK(sp); |
147 | PUTBACK; |
148 | if (call_pv("Encode::FB_QUIET", G_SCALAR|G_NOARGS) != 1) { |
149 | /* should never happen */ |
150 | Perl_die(aTHX_ "Encode::FB_QUIET did not return a value"); |
151 | return -1; |
152 | } |
153 | SPAGAIN; |
154 | e->chk = newSVsv(POPs); |
155 | PUTBACK; |
156 | sv_setsv(result, e->chk); |
157 | }else{ |
158 | e->chk = newSVsv(result); |
159 | } |
59035dcc |
160 | FREETMPS; |
161 | LEAVE; |
162 | return code; |
163 | } |
164 | |
165 | IV |
166 | PerlIOEncode_popped(pTHX_ PerlIO * f) |
167 | { |
168 | PerlIOEncode *e = PerlIOSelf(f, PerlIOEncode); |
169 | if (e->enc) { |
170 | SvREFCNT_dec(e->enc); |
171 | e->enc = Nullsv; |
172 | } |
173 | if (e->bufsv) { |
174 | SvREFCNT_dec(e->bufsv); |
175 | e->bufsv = Nullsv; |
176 | } |
177 | if (e->dataSV) { |
178 | SvREFCNT_dec(e->dataSV); |
179 | e->dataSV = Nullsv; |
180 | } |
c00aecee |
181 | if (e->chk) { |
182 | SvREFCNT_dec(e->chk); |
183 | e->dataSV = Nullsv; |
184 | } |
59035dcc |
185 | return 0; |
186 | } |
187 | |
188 | STDCHAR * |
189 | PerlIOEncode_get_base(pTHX_ PerlIO * f) |
190 | { |
191 | PerlIOEncode *e = PerlIOSelf(f, PerlIOEncode); |
192 | if (!e->base.bufsiz) |
193 | e->base.bufsiz = 1024; |
194 | if (!e->bufsv) { |
195 | e->bufsv = newSV(e->base.bufsiz); |
196 | sv_setpvn(e->bufsv, "", 0); |
197 | } |
198 | e->base.buf = (STDCHAR *) SvPVX(e->bufsv); |
199 | if (!e->base.ptr) |
200 | e->base.ptr = e->base.buf; |
201 | if (!e->base.end) |
202 | e->base.end = e->base.buf; |
203 | if (e->base.ptr < e->base.buf |
204 | || e->base.ptr > e->base.buf + SvLEN(e->bufsv)) { |
205 | Perl_warn(aTHX_ " ptr %p(%p)%p", e->base.buf, e->base.ptr, |
206 | e->base.buf + SvLEN(e->bufsv)); |
207 | abort(); |
208 | } |
209 | if (SvLEN(e->bufsv) < e->base.bufsiz) { |
210 | SSize_t poff = e->base.ptr - e->base.buf; |
211 | SSize_t eoff = e->base.end - e->base.buf; |
212 | e->base.buf = (STDCHAR *) SvGROW(e->bufsv, e->base.bufsiz); |
213 | e->base.ptr = e->base.buf + poff; |
214 | e->base.end = e->base.buf + eoff; |
215 | } |
216 | if (e->base.ptr < e->base.buf |
217 | || e->base.ptr > e->base.buf + SvLEN(e->bufsv)) { |
218 | Perl_warn(aTHX_ " ptr %p(%p)%p", e->base.buf, e->base.ptr, |
219 | e->base.buf + SvLEN(e->bufsv)); |
220 | abort(); |
221 | } |
222 | return e->base.buf; |
223 | } |
224 | |
225 | IV |
226 | PerlIOEncode_fill(pTHX_ PerlIO * f) |
227 | { |
228 | PerlIOEncode *e = PerlIOSelf(f, PerlIOEncode); |
229 | dSP; |
230 | IV code = 0; |
231 | PerlIO *n; |
232 | SSize_t avail; |
c657f685 |
233 | |
59035dcc |
234 | if (PerlIO_flush(f) != 0) |
235 | return -1; |
236 | n = PerlIONext(f); |
237 | if (!PerlIO_fast_gets(n)) { |
238 | /* Things get too messy if we don't have a buffer layer |
239 | push a :perlio to do the job */ |
240 | char mode[8]; |
241 | n = PerlIO_push(aTHX_ n, &PerlIO_perlio, PerlIO_modestr(f,mode), Nullsv); |
242 | if (!n) { |
243 | Perl_die(aTHX_ "panic: cannot push :perlio for %p",f); |
244 | } |
245 | } |
246 | ENTER; |
247 | SAVETMPS; |
248 | retry: |
249 | avail = PerlIO_get_cnt(n); |
250 | if (avail <= 0) { |
251 | avail = PerlIO_fill(n); |
252 | if (avail == 0) { |
253 | avail = PerlIO_get_cnt(n); |
254 | } |
255 | else { |
256 | if (!PerlIO_error(n) && PerlIO_eof(n)) |
257 | avail = 0; |
258 | } |
259 | } |
c00aecee |
260 | if (avail > 0 || (e->flags & NEEDS_LINES)) { |
59035dcc |
261 | STDCHAR *ptr = PerlIO_get_ptr(n); |
c00aecee |
262 | SSize_t use = (avail >= 0) ? avail : 0; |
59035dcc |
263 | SV *uni; |
264 | char *s; |
265 | STRLEN len = 0; |
266 | e->base.ptr = e->base.end = (STDCHAR *) Nullch; |
267 | (void) PerlIOEncode_get_base(aTHX_ f); |
268 | if (!e->dataSV) |
269 | e->dataSV = newSV(0); |
270 | if (SvTYPE(e->dataSV) < SVt_PV) { |
271 | sv_upgrade(e->dataSV,SVt_PV); |
272 | } |
c00aecee |
273 | if (e->flags & NEEDS_LINES) { |
274 | /* Encoding needs whole lines (e.g. iso-2022-*) |
275 | search back from end of available data for |
276 | and line marker |
277 | */ |
278 | STDCHAR *nl = ptr+use-1; |
279 | while (nl >= ptr) { |
280 | if (*nl == '\n') { |
281 | break; |
282 | } |
283 | nl--; |
284 | } |
285 | if (nl >= ptr && *nl == '\n') { |
286 | /* found a line - take up to and including that */ |
287 | use = (nl+1)-ptr; |
288 | } |
289 | else if (avail > 0) { |
290 | /* No line, but not EOF - append avail to the pending data */ |
8994bf69 |
291 | sv_catpvn(e->dataSV, (char*)ptr, use); |
c00aecee |
292 | PerlIO_set_ptrcnt(n, ptr+use, 0); |
293 | goto retry; |
294 | } |
295 | else if (!SvCUR(e->dataSV)) { |
296 | goto end_of_file; |
297 | } |
298 | } |
59035dcc |
299 | if (SvCUR(e->dataSV)) { |
300 | /* something left over from last time - create a normal |
301 | SV with new data appended |
302 | */ |
303 | if (use + SvCUR(e->dataSV) > e->base.bufsiz) { |
c00aecee |
304 | if (e->flags & NEEDS_LINES) { |
305 | /* Have to grow buffer */ |
306 | e->base.bufsiz = use + SvCUR(e->dataSV); |
307 | PerlIOEncode_get_base(aTHX_ f); |
308 | } |
309 | else { |
c657f685 |
310 | use = e->base.bufsiz - SvCUR(e->dataSV); |
311 | } |
59035dcc |
312 | } |
313 | sv_catpvn(e->dataSV,(char*)ptr,use); |
314 | } |
315 | else { |
316 | /* Create a "dummy" SV to represent the available data from layer below */ |
317 | if (SvLEN(e->dataSV) && SvPVX(e->dataSV)) { |
318 | Safefree(SvPVX(e->dataSV)); |
319 | } |
c657f685 |
320 | if (use > e->base.bufsiz) { |
c00aecee |
321 | if (e->flags & NEEDS_LINES) { |
322 | /* Have to grow buffer */ |
323 | e->base.bufsiz = use; |
324 | PerlIOEncode_get_base(aTHX_ f); |
325 | } |
326 | else { |
c657f685 |
327 | use = e->base.bufsiz; |
328 | } |
59035dcc |
329 | } |
330 | SvPVX(e->dataSV) = (char *) ptr; |
331 | SvLEN(e->dataSV) = 0; /* Hands off sv.c - it isn't yours */ |
332 | SvCUR_set(e->dataSV,use); |
333 | SvPOK_only(e->dataSV); |
334 | } |
335 | SvUTF8_off(e->dataSV); |
336 | PUSHMARK(sp); |
337 | XPUSHs(e->enc); |
338 | XPUSHs(e->dataSV); |
918951dd |
339 | XPUSHs(e->chk); |
59035dcc |
340 | PUTBACK; |
918951dd |
341 | if (call_method("decode", G_SCALAR) != 1) { |
59035dcc |
342 | Perl_die(aTHX_ "panic: decode did not return a value"); |
343 | } |
344 | SPAGAIN; |
345 | uni = POPs; |
346 | PUTBACK; |
347 | /* Now get translated string (forced to UTF-8) and use as buffer */ |
348 | if (SvPOK(uni)) { |
349 | s = SvPVutf8(uni, len); |
350 | #ifdef PARANOID_ENCODE_CHECKS |
351 | if (len && !is_utf8_string((U8*)s,len)) { |
352 | Perl_warn(aTHX_ "panic: decode did not return UTF-8 '%.*s'",(int) len,s); |
353 | } |
354 | #endif |
355 | } |
356 | if (len > 0) { |
357 | /* Got _something */ |
358 | /* if decode gave us back dataSV then data may vanish when |
359 | we do ptrcnt adjust - so take our copy now. |
360 | (The copy is a pain - need a put-it-here option for decode.) |
361 | */ |
362 | sv_setpvn(e->bufsv,s,len); |
363 | e->base.ptr = e->base.buf = (STDCHAR*)SvPVX(e->bufsv); |
364 | e->base.end = e->base.ptr + SvCUR(e->bufsv); |
365 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
366 | SvUTF8_on(e->bufsv); |
367 | |
368 | /* Adjust ptr/cnt not taking anything which |
369 | did not translate - not clear this is a win */ |
370 | /* compute amount we took */ |
371 | use -= SvCUR(e->dataSV); |
372 | PerlIO_set_ptrcnt(n, ptr+use, (avail-use)); |
373 | /* and as we did not take it it isn't pending */ |
374 | SvCUR_set(e->dataSV,0); |
375 | } else { |
376 | /* Got nothing - assume partial character so we need some more */ |
377 | /* Make sure e->dataSV is a normal SV before re-filling as |
378 | buffer alias will change under us |
379 | */ |
380 | s = SvPV(e->dataSV,len); |
381 | sv_setpvn(e->dataSV,s,len); |
382 | PerlIO_set_ptrcnt(n, ptr+use, (avail-use)); |
383 | goto retry; |
384 | } |
385 | FREETMPS; |
386 | LEAVE; |
387 | return code; |
388 | } |
389 | else { |
c00aecee |
390 | end_of_file: |
59035dcc |
391 | if (avail == 0) |
392 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
393 | else |
394 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
395 | return -1; |
396 | } |
397 | } |
398 | |
399 | IV |
400 | PerlIOEncode_flush(pTHX_ PerlIO * f) |
401 | { |
402 | PerlIOEncode *e = PerlIOSelf(f, PerlIOEncode); |
403 | IV code = 0; |
c657f685 |
404 | |
59035dcc |
405 | if (e->bufsv && (e->base.ptr > e->base.buf)) { |
406 | dSP; |
407 | SV *str; |
408 | char *s; |
409 | STRLEN len; |
410 | SSize_t count = 0; |
411 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
412 | /* Write case encode the buffer and write() to layer below */ |
413 | ENTER; |
414 | SAVETMPS; |
415 | PUSHMARK(sp); |
416 | XPUSHs(e->enc); |
417 | SvCUR_set(e->bufsv, e->base.ptr - e->base.buf); |
418 | SvUTF8_on(e->bufsv); |
419 | XPUSHs(e->bufsv); |
918951dd |
420 | XPUSHs(e->chk); |
59035dcc |
421 | PUTBACK; |
918951dd |
422 | if (call_method("encode", G_SCALAR) != 1) { |
59035dcc |
423 | Perl_die(aTHX_ "panic: encode did not return a value"); |
424 | } |
425 | SPAGAIN; |
426 | str = POPs; |
427 | PUTBACK; |
428 | s = SvPV(str, len); |
429 | count = PerlIO_write(PerlIONext(f),s,len); |
430 | if (count != len) { |
431 | code = -1; |
432 | } |
433 | FREETMPS; |
434 | LEAVE; |
435 | if (PerlIO_flush(PerlIONext(f)) != 0) { |
436 | code = -1; |
437 | } |
438 | if (SvCUR(e->bufsv)) { |
439 | /* Did not all translate */ |
440 | e->base.ptr = e->base.buf+SvCUR(e->bufsv); |
441 | return code; |
442 | } |
443 | } |
444 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
445 | /* read case */ |
446 | /* if we have any untranslated stuff then unread that first */ |
447 | if (e->dataSV && SvCUR(e->dataSV)) { |
448 | s = SvPV(e->dataSV, len); |
449 | count = PerlIO_unread(PerlIONext(f),s,len); |
450 | if (count != len) { |
451 | code = -1; |
452 | } |
453 | } |
454 | /* See if there is anything left in the buffer */ |
455 | if (e->base.ptr < e->base.end) { |
456 | /* Bother - have unread data. |
457 | re-encode and unread() to layer below |
458 | */ |
459 | ENTER; |
460 | SAVETMPS; |
461 | str = sv_newmortal(); |
462 | sv_upgrade(str, SVt_PV); |
463 | SvPVX(str) = (char*)e->base.ptr; |
464 | SvLEN(str) = 0; |
465 | SvCUR_set(str, e->base.end - e->base.ptr); |
466 | SvPOK_only(str); |
467 | SvUTF8_on(str); |
468 | PUSHMARK(sp); |
469 | XPUSHs(e->enc); |
470 | XPUSHs(str); |
918951dd |
471 | XPUSHs(e->chk); |
59035dcc |
472 | PUTBACK; |
918951dd |
473 | if (call_method("encode", G_SCALAR) != 1) { |
59035dcc |
474 | Perl_die(aTHX_ "panic: encode did not return a value"); |
475 | } |
476 | SPAGAIN; |
477 | str = POPs; |
478 | PUTBACK; |
479 | s = SvPV(str, len); |
480 | count = PerlIO_unread(PerlIONext(f),s,len); |
481 | if (count != len) { |
482 | code = -1; |
483 | } |
484 | FREETMPS; |
485 | LEAVE; |
486 | } |
487 | } |
488 | e->base.ptr = e->base.end = e->base.buf; |
489 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
490 | } |
491 | return code; |
492 | } |
493 | |
494 | IV |
495 | PerlIOEncode_close(pTHX_ PerlIO * f) |
496 | { |
497 | PerlIOEncode *e = PerlIOSelf(f, PerlIOEncode); |
498 | IV code = PerlIOBase_close(aTHX_ f); |
c657f685 |
499 | |
59035dcc |
500 | if (e->bufsv) { |
501 | if (e->base.buf && e->base.ptr > e->base.buf) { |
502 | Perl_croak(aTHX_ "Close with partial character"); |
503 | } |
504 | SvREFCNT_dec(e->bufsv); |
505 | e->bufsv = Nullsv; |
506 | } |
507 | e->base.buf = NULL; |
508 | e->base.ptr = NULL; |
509 | e->base.end = NULL; |
510 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
511 | return code; |
512 | } |
513 | |
514 | Off_t |
515 | PerlIOEncode_tell(pTHX_ PerlIO * f) |
516 | { |
517 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
518 | /* Unfortunately the only way to get a postion is to (re-)translate, |
519 | the UTF8 we have in bufefr and then ask layer below |
520 | */ |
521 | PerlIO_flush(f); |
522 | if (b->buf && b->ptr > b->buf) { |
523 | Perl_croak(aTHX_ "Cannot tell at partial character"); |
524 | } |
525 | return PerlIO_tell(PerlIONext(f)); |
526 | } |
527 | |
528 | PerlIO * |
529 | PerlIOEncode_dup(pTHX_ PerlIO * f, PerlIO * o, |
530 | CLONE_PARAMS * params, int flags) |
531 | { |
532 | if ((f = PerlIOBase_dup(aTHX_ f, o, params, flags))) { |
533 | PerlIOEncode *fe = PerlIOSelf(f, PerlIOEncode); |
534 | PerlIOEncode *oe = PerlIOSelf(o, PerlIOEncode); |
535 | if (oe->enc) { |
536 | fe->enc = PerlIO_sv_dup(aTHX_ oe->enc, params); |
537 | } |
538 | } |
539 | return f; |
540 | } |
541 | |
c00aecee |
542 | SSize_t |
543 | PerlIOEncode_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
544 | { |
545 | PerlIOEncode *e = PerlIOSelf(f, PerlIOEncode); |
546 | if (e->flags & NEEDS_LINES) { |
547 | SSize_t done = 0; |
548 | const char *ptr = (const char *) vbuf; |
549 | const char *end = ptr+count; |
550 | while (ptr < end) { |
551 | const char *nl = ptr; |
552 | while (nl < end && *nl++ != '\n') /* empty body */; |
553 | done = PerlIOBuf_write(aTHX_ f, ptr, nl-ptr); |
554 | if (done != nl-ptr) { |
555 | if (done > 0) { |
556 | ptr += done; |
557 | } |
558 | break; |
559 | } |
560 | ptr += done; |
561 | if (ptr[-1] == '\n') { |
562 | if (PerlIOEncode_flush(aTHX_ f) != 0) { |
563 | break; |
564 | } |
565 | } |
566 | } |
567 | return (SSize_t) (ptr - (const char *) vbuf); |
568 | } |
569 | else { |
570 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
571 | } |
572 | } |
573 | |
59035dcc |
574 | PerlIO_funcs PerlIO_encode = { |
575 | "encoding", |
576 | sizeof(PerlIOEncode), |
577 | PERLIO_K_BUFFERED|PERLIO_K_DESTRUCT, |
578 | PerlIOEncode_pushed, |
579 | PerlIOEncode_popped, |
580 | PerlIOBuf_open, |
581 | PerlIOEncode_getarg, |
582 | PerlIOBase_fileno, |
583 | PerlIOEncode_dup, |
584 | PerlIOBuf_read, |
585 | PerlIOBuf_unread, |
c00aecee |
586 | PerlIOEncode_write, |
59035dcc |
587 | PerlIOBuf_seek, |
588 | PerlIOEncode_tell, |
589 | PerlIOEncode_close, |
590 | PerlIOEncode_flush, |
591 | PerlIOEncode_fill, |
592 | PerlIOBase_eof, |
593 | PerlIOBase_error, |
594 | PerlIOBase_clearerr, |
595 | PerlIOBase_setlinebuf, |
596 | PerlIOEncode_get_base, |
597 | PerlIOBuf_bufsiz, |
598 | PerlIOBuf_get_ptr, |
599 | PerlIOBuf_get_cnt, |
600 | PerlIOBuf_set_ptrcnt, |
601 | }; |
602 | #endif /* encode layer */ |
603 | |
604 | MODULE = PerlIO::encoding PACKAGE = PerlIO::encoding |
605 | |
606 | PROTOTYPES: ENABLE |
607 | |
608 | BOOT: |
609 | { |
610 | #ifdef PERLIO_LAYERS |
611 | PerlIO_define_layer(aTHX_ &PerlIO_encode); |
612 | #endif |
613 | } |