Commit | Line | Data |
2c674647 |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
2f2b4ff2 |
4 | #define U8 U8 |
5 | #include "encode.h" |
6 | #include "iso8859.h" |
7 | #include "EBCDIC.h" |
8 | #include "Symbols.h" |
2c674647 |
9 | |
67e989fb |
10 | #define UNIMPLEMENTED(x,y) y x (SV *sv, char *encoding) { \ |
2f5768b8 |
11 | Perl_croak(aTHX_ "panic_unimplemented"); \ |
4a83738a |
12 | return (y)0; /* fool picky compilers */ \ |
87714904 |
13 | } |
67e989fb |
14 | UNIMPLEMENTED(_encoded_utf8_to_bytes, I32) |
15 | UNIMPLEMENTED(_encoded_bytes_to_utf8, I32) |
16 | |
33af2bc7 |
17 | #ifdef USE_PERLIO |
72e44f29 |
18 | /* Define an encoding "layer" in the perliol.h sense. |
19 | The layer defined here "inherits" in an object-oriented sense from the |
20 | "perlio" layer with its PerlIOBuf_* "methods". |
21 | The implementation is particularly efficient as until Encode settles down |
22 | there is no point in tryint to tune it. |
23 | |
24 | The layer works by overloading the "fill" and "flush" methods. |
25 | |
26 | "fill" calls "SUPER::fill" in perl terms, then calls the encode OO perl API |
27 | to convert the encoded data to UTF-8 form, then copies it back to the |
28 | buffer. The "base class's" read methods then see the UTF-8 data. |
29 | |
30 | "flush" transforms the UTF-8 data deposited by the "base class's write |
31 | method in the buffer back into the encoded form using the encode OO perl API, |
32 | then copies data back into the buffer and calls "SUPER::flush. |
33 | |
34 | Note that "flush" is _also_ called for read mode - we still do the (back)-translate |
35 | so that the the base class's "flush" sees the correct number of encoded chars |
36 | for positioning the seek pointer. (This double translation is the worst performance |
37 | issue - particularly with all-perl encode engine.) |
38 | |
39 | */ |
40 | |
41 | |
33af2bc7 |
42 | #include "perliol.h" |
43 | |
44 | typedef struct |
45 | { |
46 | PerlIOBuf base; /* PerlIOBuf stuff */ |
47 | SV * bufsv; |
48 | SV * enc; |
49 | } PerlIOEncode; |
50 | |
51 | |
52 | IV |
53 | PerlIOEncode_pushed(PerlIO *f, const char *mode,const char *arg,STRLEN len) |
54 | { |
55 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
56 | dTHX; |
57 | dSP; |
58 | IV code; |
59 | code = PerlIOBuf_pushed(f,mode,Nullch,0); |
60 | ENTER; |
61 | SAVETMPS; |
62 | PUSHMARK(sp); |
33af2bc7 |
63 | XPUSHs(sv_2mortal(newSVpvn(arg,len))); |
64 | PUTBACK; |
51ef4e11 |
65 | if (perl_call_pv("Encode::find_encoding",G_SCALAR) != 1) |
52744f63 |
66 | { |
67 | /* should never happen */ |
51ef4e11 |
68 | Perl_die(aTHX_ "Encode::find_encoding did not return a value"); |
52744f63 |
69 | return -1; |
70 | } |
33af2bc7 |
71 | SPAGAIN; |
72 | e->enc = POPs; |
73 | PUTBACK; |
74 | if (!SvROK(e->enc)) |
52744f63 |
75 | { |
76 | e->enc = Nullsv; |
77 | errno = EINVAL; |
78 | Perl_warner(aTHX_ WARN_IO, "Cannot find encoding \"%.*s\"", (int) len, arg); |
79 | return -1; |
80 | } |
33af2bc7 |
81 | SvREFCNT_inc(e->enc); |
82 | FREETMPS; |
83 | LEAVE; |
84 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
85 | return code; |
86 | } |
87 | |
88 | IV |
89 | PerlIOEncode_popped(PerlIO *f) |
90 | { |
91 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
92 | dTHX; |
93 | if (e->enc) |
94 | { |
95 | SvREFCNT_dec(e->enc); |
96 | e->enc = Nullsv; |
97 | } |
98 | if (e->bufsv) |
99 | { |
100 | SvREFCNT_dec(e->bufsv); |
101 | e->bufsv = Nullsv; |
102 | } |
103 | return 0; |
104 | } |
105 | |
106 | STDCHAR * |
107 | PerlIOEncode_get_base(PerlIO *f) |
108 | { |
109 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
110 | dTHX; |
111 | if (!e->base.bufsiz) |
112 | e->base.bufsiz = 1024; |
113 | if (!e->bufsv) |
114 | { |
115 | e->bufsv = newSV(e->base.bufsiz); |
116 | sv_setpvn(e->bufsv,"",0); |
117 | } |
62e8870c |
118 | e->base.buf = (STDCHAR *)SvPVX(e->bufsv); |
33af2bc7 |
119 | if (!e->base.ptr) |
120 | e->base.ptr = e->base.buf; |
121 | if (!e->base.end) |
122 | e->base.end = e->base.buf; |
123 | if (e->base.ptr < e->base.buf || e->base.ptr > e->base.buf+SvLEN(e->bufsv)) |
124 | { |
125 | Perl_warn(aTHX_ " ptr %p(%p)%p", |
126 | e->base.buf,e->base.ptr,e->base.buf+SvLEN(e->bufsv)); |
127 | abort(); |
128 | } |
129 | if (SvLEN(e->bufsv) < e->base.bufsiz) |
130 | { |
131 | SSize_t poff = e->base.ptr - e->base.buf; |
132 | SSize_t eoff = e->base.end - e->base.buf; |
62e8870c |
133 | e->base.buf = (STDCHAR *)SvGROW(e->bufsv,e->base.bufsiz); |
33af2bc7 |
134 | e->base.ptr = e->base.buf + poff; |
135 | e->base.end = e->base.buf + eoff; |
136 | } |
137 | if (e->base.ptr < e->base.buf || e->base.ptr > e->base.buf+SvLEN(e->bufsv)) |
138 | { |
139 | Perl_warn(aTHX_ " ptr %p(%p)%p", |
140 | e->base.buf,e->base.ptr,e->base.buf+SvLEN(e->bufsv)); |
141 | abort(); |
142 | } |
143 | return e->base.buf; |
144 | } |
145 | |
33af2bc7 |
146 | IV |
147 | PerlIOEncode_fill(PerlIO *f) |
148 | { |
149 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
150 | dTHX; |
151 | dSP; |
152 | IV code; |
33af2bc7 |
153 | code = PerlIOBuf_fill(f); |
154 | if (code == 0) |
155 | { |
156 | SV *uni; |
72e44f29 |
157 | STRLEN len; |
158 | char *s; |
159 | /* Set SV that is the buffer to be buf..ptr */ |
33af2bc7 |
160 | SvCUR_set(e->bufsv, e->base.end - e->base.buf); |
161 | SvUTF8_off(e->bufsv); |
162 | ENTER; |
163 | SAVETMPS; |
164 | PUSHMARK(sp); |
165 | XPUSHs(e->enc); |
166 | XPUSHs(e->bufsv); |
167 | XPUSHs(&PL_sv_yes); |
168 | PUTBACK; |
50d26985 |
169 | if (perl_call_method("decode",G_SCALAR) != 1) |
33af2bc7 |
170 | code = -1; |
171 | SPAGAIN; |
172 | uni = POPs; |
173 | PUTBACK; |
72e44f29 |
174 | /* Now get translated string (forced to UTF-8) and copy back to buffer |
175 | don't use sv_setsv as that may "steal" PV from returned temp |
176 | and so free() our known-large-enough buffer. |
177 | sv_setpvn() should do but let us do it long hand. |
178 | */ |
179 | s = SvPVutf8(uni,len); |
180 | if (s != SvPVX(e->bufsv)) |
181 | { |
62e8870c |
182 | e->base.buf = (STDCHAR *)SvGROW(e->bufsv,len); |
72e44f29 |
183 | Move(s,e->base.buf,len,char); |
184 | SvCUR_set(e->bufsv,len); |
185 | } |
186 | SvUTF8_on(e->bufsv); |
187 | e->base.end = e->base.buf+len; |
33af2bc7 |
188 | e->base.ptr = e->base.buf; |
189 | FREETMPS; |
190 | LEAVE; |
191 | } |
192 | return code; |
193 | } |
194 | |
195 | IV |
196 | PerlIOEncode_flush(PerlIO *f) |
197 | { |
198 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
199 | IV code = 0; |
200 | dTHX; |
201 | if (e->bufsv && (PerlIOBase(f)->flags & (PERLIO_F_RDBUF|PERLIO_F_WRBUF))) |
202 | { |
203 | dSP; |
204 | SV *str; |
205 | char *s; |
206 | STRLEN len; |
72e44f29 |
207 | SSize_t left = 0; |
208 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
209 | { |
210 | /* This is really just a flag to see if we took all the data, if |
211 | we did PerlIOBase_flush avoids a seek to lower layer. |
212 | Need to revisit if we start getting clever with unreads or seeks-in-buffer |
213 | */ |
214 | left = e->base.end - e->base.ptr; |
215 | } |
33af2bc7 |
216 | ENTER; |
217 | SAVETMPS; |
218 | PUSHMARK(sp); |
219 | XPUSHs(e->enc); |
72e44f29 |
220 | SvCUR_set(e->bufsv, e->base.ptr - e->base.buf); |
33af2bc7 |
221 | SvUTF8_on(e->bufsv); |
222 | XPUSHs(e->bufsv); |
223 | XPUSHs(&PL_sv_yes); |
224 | PUTBACK; |
50d26985 |
225 | if (perl_call_method("encode",G_SCALAR) != 1) |
33af2bc7 |
226 | code = -1; |
227 | SPAGAIN; |
228 | str = POPs; |
229 | PUTBACK; |
72e44f29 |
230 | s = SvPV(str,len); |
231 | if (s != SvPVX(e->bufsv)) |
232 | { |
62e8870c |
233 | e->base.buf = (STDCHAR *)SvGROW(e->bufsv,len); |
72e44f29 |
234 | Move(s,e->base.buf,len,char); |
235 | SvCUR_set(e->bufsv,len); |
236 | } |
33af2bc7 |
237 | SvUTF8_off(e->bufsv); |
72e44f29 |
238 | e->base.ptr = e->base.buf+len; |
239 | /* restore end != ptr as inequality is used by PerlIOBuf_flush in read case */ |
240 | e->base.end = e->base.ptr + left; |
33af2bc7 |
241 | FREETMPS; |
242 | LEAVE; |
243 | if (PerlIOBuf_flush(f) != 0) |
244 | code = -1; |
245 | } |
246 | return code; |
247 | } |
248 | |
249 | IV |
250 | PerlIOEncode_close(PerlIO *f) |
251 | { |
252 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
253 | IV code = PerlIOBase_close(f); |
254 | dTHX; |
255 | if (e->bufsv) |
256 | { |
257 | SvREFCNT_dec(e->bufsv); |
258 | e->bufsv = Nullsv; |
259 | } |
260 | e->base.buf = NULL; |
261 | e->base.ptr = NULL; |
262 | e->base.end = NULL; |
263 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
264 | return code; |
265 | } |
266 | |
72e44f29 |
267 | Off_t |
268 | PerlIOEncode_tell(PerlIO *f) |
269 | { |
270 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
271 | /* Unfortunately the only way to get a postion is to back-translate, |
272 | the UTF8-bytes we have buf..ptr and adjust accordingly. |
273 | But we will try and save any unread data in case stream |
274 | is un-seekable. |
275 | */ |
276 | if ((PerlIOBase(f)->flags & PERLIO_F_RDBUF) && b->ptr < b->end) |
277 | { |
278 | Size_t count = b->end - b->ptr; |
279 | PerlIO_push(f,&PerlIO_pending,"r",Nullch,0); |
280 | /* Save what we have left to read */ |
281 | PerlIOSelf(f,PerlIOBuf)->bufsiz = count; |
282 | PerlIO_unread(f,b->ptr,count); |
283 | /* There isn't any unread data - we just saved it - so avoid the lower seek */ |
284 | b->end = b->ptr; |
285 | /* Flush ourselves - now one layer down, |
286 | this does the back translate and adjusts position |
287 | */ |
288 | PerlIO_flush(PerlIONext(f)); |
289 | /* Set position of the saved data */ |
290 | PerlIOSelf(f,PerlIOBuf)->posn = b->posn; |
291 | } |
292 | else |
293 | { |
294 | PerlIO_flush(f); |
295 | } |
296 | return b->posn; |
297 | } |
298 | |
33af2bc7 |
299 | PerlIO_funcs PerlIO_encode = { |
72e44f29 |
300 | "encoding", |
33af2bc7 |
301 | sizeof(PerlIOEncode), |
302 | PERLIO_K_BUFFERED, |
303 | PerlIOBase_fileno, |
304 | PerlIOBuf_fdopen, |
305 | PerlIOBuf_open, |
306 | PerlIOBuf_reopen, |
307 | PerlIOEncode_pushed, |
308 | PerlIOEncode_popped, |
309 | PerlIOBuf_read, |
310 | PerlIOBuf_unread, |
311 | PerlIOBuf_write, |
312 | PerlIOBuf_seek, |
72e44f29 |
313 | PerlIOEncode_tell, |
33af2bc7 |
314 | PerlIOEncode_close, |
315 | PerlIOEncode_flush, |
316 | PerlIOEncode_fill, |
317 | PerlIOBase_eof, |
318 | PerlIOBase_error, |
319 | PerlIOBase_clearerr, |
320 | PerlIOBuf_setlinebuf, |
321 | PerlIOEncode_get_base, |
322 | PerlIOBuf_bufsiz, |
323 | PerlIOBuf_get_ptr, |
324 | PerlIOBuf_get_cnt, |
325 | PerlIOBuf_set_ptrcnt, |
326 | }; |
327 | #endif |
328 | |
2f2b4ff2 |
329 | void |
330 | Encode_Define(pTHX_ encode_t *enc) |
331 | { |
51ef4e11 |
332 | dSP; |
2f2b4ff2 |
333 | HV *stash = gv_stashpv("Encode::XS", TRUE); |
334 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))),stash); |
dcda1f94 |
335 | int i = 0; |
51ef4e11 |
336 | PUSHMARK(sp); |
337 | XPUSHs(sv); |
dcda1f94 |
338 | while (enc->name[i]) |
339 | { |
340 | const char *name = enc->name[i++]; |
51ef4e11 |
341 | XPUSHs(sv_2mortal(newSVpvn(name,strlen(name)))); |
dcda1f94 |
342 | } |
51ef4e11 |
343 | PUTBACK; |
344 | call_pv("Encode::define_encoding",G_DISCARD); |
dcda1f94 |
345 | SvREFCNT_dec(sv); |
2f2b4ff2 |
346 | } |
347 | |
183a2d84 |
348 | void call_failure (SV *routine, U8* done, U8* dest, U8* orig) {} |
67e989fb |
349 | |
2f2b4ff2 |
350 | static SV * |
351 | encode_method(pTHX_ encode_t *enc, encpage_t *dir, SV *src, int check) |
352 | { |
353 | STRLEN slen; |
354 | U8 *s = (U8 *) SvPV(src,slen); |
355 | SV *dst = sv_2mortal(newSV(2*slen+1)); |
356 | if (slen) |
357 | { |
358 | U8 *d = (U8 *) SvGROW(dst, 2*slen+1); |
359 | STRLEN dlen = SvLEN(dst); |
360 | int code; |
9b37254d |
361 | while ((code = do_encode(dir,s,&slen,d,dlen,&dlen,!check))) |
2f2b4ff2 |
362 | { |
363 | SvCUR_set(dst,dlen); |
364 | SvPOK_on(dst); |
9b37254d |
365 | |
366 | if (code == ENCODE_FALLBACK) |
367 | break; |
368 | |
2f2b4ff2 |
369 | switch(code) |
370 | { |
371 | case ENCODE_NOSPACE: |
372 | { |
373 | STRLEN need = (slen) ? (SvLEN(dst)*SvCUR(src)/slen) : (dlen + UTF8_MAXLEN); |
374 | if (need <= SvLEN(dst)) |
375 | need += UTF8_MAXLEN; |
376 | d = (U8 *) SvGROW(dst, need); |
377 | dlen = SvLEN(dst); |
378 | slen = SvCUR(src); |
379 | break; |
380 | } |
381 | |
382 | case ENCODE_NOREP: |
383 | if (dir == enc->f_utf8) |
384 | { |
385 | if (!check && ckWARN_d(WARN_UTF8)) |
386 | { |
387 | STRLEN clen; |
9041c2e3 |
388 | UV ch = utf8n_to_uvuni(s+slen,(SvCUR(src)-slen),&clen,0); |
389 | Perl_warner(aTHX_ WARN_UTF8, "\"\\N{U+%"UVxf"}\" does not map to %s", ch, enc->name[0]); |
2f2b4ff2 |
390 | /* FIXME: Skip over the character, copy in replacement and continue |
391 | * but that is messy so for now just fail. |
392 | */ |
393 | return &PL_sv_undef; |
394 | } |
395 | else |
396 | { |
397 | return &PL_sv_undef; |
398 | } |
399 | } |
400 | else |
401 | { |
402 | /* UTF-8 is supposed to be "Universal" so should not happen */ |
403 | Perl_croak(aTHX_ "%s '%.*s' does not map to UTF-8", |
dcda1f94 |
404 | enc->name[0], (int)(SvCUR(src)-slen),s+slen); |
2f2b4ff2 |
405 | } |
406 | break; |
407 | |
408 | case ENCODE_PARTIAL: |
409 | if (!check && ckWARN_d(WARN_UTF8)) |
410 | { |
411 | Perl_warner(aTHX_ WARN_UTF8, "Partial %s character", |
dcda1f94 |
412 | (dir == enc->f_utf8) ? "UTF-8" : enc->name[0]); |
2f2b4ff2 |
413 | } |
414 | return &PL_sv_undef; |
415 | |
416 | default: |
417 | Perl_croak(aTHX_ "Unexpected code %d converting %s %s", |
dcda1f94 |
418 | code, (dir == enc->f_utf8) ? "to" : "from",enc->name[0]); |
2f2b4ff2 |
419 | return &PL_sv_undef; |
420 | } |
421 | } |
422 | SvCUR_set(dst,dlen); |
423 | SvPOK_on(dst); |
424 | if (check) |
425 | { |
426 | if (slen < SvCUR(src)) |
427 | { |
428 | Move(s+slen,s,SvCUR(src)-slen,U8); |
429 | } |
430 | SvCUR_set(src,SvCUR(src)-slen); |
431 | } |
432 | } |
433 | return dst; |
434 | } |
435 | |
7525822f |
436 | MODULE = Encode PACKAGE = Encode PREFIX = sv_ |
437 | |
438 | void |
439 | valid_utf8(sv) |
440 | SV * sv |
441 | CODE: |
442 | { |
443 | STRLEN len; |
444 | char *s = SvPV(sv,len); |
51516b5a |
445 | if (!SvUTF8(sv) || is_utf8_string((U8*)s,len)) |
7525822f |
446 | XSRETURN_YES; |
447 | else |
448 | XSRETURN_NO; |
449 | } |
450 | |
451 | void |
452 | sv_utf8_encode(sv) |
453 | SV * sv |
454 | |
455 | bool |
456 | sv_utf8_decode(sv) |
457 | SV * sv |
458 | |
4411f3b6 |
459 | STRLEN |
7525822f |
460 | sv_utf8_upgrade(sv) |
461 | SV * sv |
462 | |
463 | bool |
464 | sv_utf8_downgrade(sv,failok=0) |
465 | SV * sv |
466 | bool failok |
467 | |
50d26985 |
468 | MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_ |
2f2b4ff2 |
469 | |
470 | PROTOTYPES: ENABLE |
471 | |
472 | void |
50d26985 |
473 | Method_decode(obj,src,check = 0) |
2f2b4ff2 |
474 | SV * obj |
475 | SV * src |
476 | int check |
477 | CODE: |
478 | { |
479 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
480 | ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check); |
481 | SvUTF8_on(ST(0)); |
482 | XSRETURN(1); |
483 | } |
484 | |
485 | void |
50d26985 |
486 | Method_encode(obj,src,check = 0) |
2f2b4ff2 |
487 | SV * obj |
488 | SV * src |
489 | int check |
490 | CODE: |
491 | { |
492 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
493 | sv_utf8_upgrade(src); |
494 | ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check); |
495 | XSRETURN(1); |
496 | } |
497 | |
67e989fb |
498 | MODULE = Encode PACKAGE = Encode |
2c674647 |
499 | |
500 | PROTOTYPES: ENABLE |
501 | |
67e989fb |
502 | I32 |
2c674647 |
503 | _bytes_to_utf8(sv, ...) |
67e989fb |
504 | SV * sv |
2c674647 |
505 | CODE: |
67e989fb |
506 | { |
507 | SV * encoding = items == 2 ? ST(1) : Nullsv; |
508 | |
509 | if (encoding) |
510 | RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding)); |
511 | else { |
512 | STRLEN len; |
183a2d84 |
513 | U8* s = (U8*)SvPV(sv, len); |
67e989fb |
514 | U8* converted; |
515 | |
516 | converted = bytes_to_utf8(s, &len); /* This allocs */ |
183a2d84 |
517 | sv_setpvn(sv, (char *)converted, len); |
67e989fb |
518 | SvUTF8_on(sv); /* XXX Should we? */ |
519 | Safefree(converted); /* ... so free it */ |
520 | RETVAL = len; |
521 | } |
522 | } |
2c674647 |
523 | OUTPUT: |
67e989fb |
524 | RETVAL |
2c674647 |
525 | |
67e989fb |
526 | I32 |
2c674647 |
527 | _utf8_to_bytes(sv, ...) |
67e989fb |
528 | SV * sv |
2c674647 |
529 | CODE: |
67e989fb |
530 | { |
531 | SV * to = items > 1 ? ST(1) : Nullsv; |
532 | SV * check = items > 2 ? ST(2) : Nullsv; |
87714904 |
533 | |
67e989fb |
534 | if (to) |
535 | RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to)); |
536 | else { |
67e989fb |
537 | STRLEN len; |
b113ac0e |
538 | U8 *s = (U8*)SvPV(sv, len); |
67e989fb |
539 | |
540 | if (SvTRUE(check)) { |
541 | /* Must do things the slow way */ |
542 | U8 *dest; |
87714904 |
543 | U8 *src = (U8*)savepv((char *)s); /* We need a copy to pass to check() */ |
67e989fb |
544 | U8 *send = s + len; |
545 | |
546 | New(83, dest, len, U8); /* I think */ |
547 | |
548 | while (s < send) { |
549 | if (*s < 0x80) |
550 | *dest++ = *s++; |
551 | else { |
b113ac0e |
552 | STRLEN ulen; |
553 | UV uv = *s++; |
87714904 |
554 | |
67e989fb |
555 | /* Have to do it all ourselves because of error routine, |
556 | aargh. */ |
557 | if (!(uv & 0x40)) |
558 | goto failure; |
559 | if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; } |
560 | else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; } |
561 | else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; } |
562 | else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; } |
563 | else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; } |
564 | else if (!(uv & 0x01)) { ulen = 7; uv = 0; } |
565 | else { ulen = 13; uv = 0; } |
87714904 |
566 | |
67e989fb |
567 | /* Note change to utf8.c variable naming, for variety */ |
568 | while (ulen--) { |
569 | if ((*s & 0xc0) != 0x80) |
570 | goto failure; |
87714904 |
571 | |
67e989fb |
572 | else |
573 | uv = (uv << 6) | (*s++ & 0x3f); |
87714904 |
574 | } |
67e989fb |
575 | if (uv > 256) { |
576 | failure: |
577 | call_failure(check, s, dest, src); |
578 | /* Now what happens? */ |
579 | } |
580 | *dest++ = (U8)uv; |
581 | } |
582 | } |
583 | } else |
584 | RETVAL = (utf8_to_bytes(s, &len) ? len : 0); |
585 | } |
2c674647 |
586 | } |
587 | OUTPUT: |
588 | RETVAL |
589 | |
2c674647 |
590 | bool |
4411f3b6 |
591 | is_utf8(sv, check = FALSE) |
592 | SV * sv |
593 | bool check |
2c674647 |
594 | CODE: |
595 | { |
2c674647 |
596 | if (SvPOK(sv)) { |
4411f3b6 |
597 | RETVAL = SvUTF8(sv) ? TRUE : FALSE; |
2c674647 |
598 | if (RETVAL && |
4411f3b6 |
599 | check && |
2c674647 |
600 | !is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) |
601 | RETVAL = FALSE; |
602 | } else { |
603 | RETVAL = FALSE; |
604 | } |
605 | } |
606 | OUTPUT: |
607 | RETVAL |
608 | |
609 | SV * |
4411f3b6 |
610 | _utf8_on(sv) |
2c674647 |
611 | SV * sv |
612 | CODE: |
613 | { |
614 | if (SvPOK(sv)) { |
87714904 |
615 | SV *rsv = newSViv(SvUTF8(sv)); |
2c674647 |
616 | RETVAL = rsv; |
617 | SvUTF8_on(sv); |
618 | } else { |
619 | RETVAL = &PL_sv_undef; |
620 | } |
621 | } |
622 | OUTPUT: |
623 | RETVAL |
624 | |
625 | SV * |
4411f3b6 |
626 | _utf8_off(sv) |
2c674647 |
627 | SV * sv |
628 | CODE: |
629 | { |
630 | if (SvPOK(sv)) { |
87714904 |
631 | SV *rsv = newSViv(SvUTF8(sv)); |
2c674647 |
632 | RETVAL = rsv; |
633 | SvUTF8_off(sv); |
634 | } else { |
635 | RETVAL = &PL_sv_undef; |
636 | } |
637 | } |
638 | OUTPUT: |
639 | RETVAL |
640 | |
33af2bc7 |
641 | BOOT: |
642 | { |
643 | #ifdef USE_PERLIO |
644 | PerlIO_define_layer(&PerlIO_encode); |
645 | #endif |
2f2b4ff2 |
646 | #include "iso8859.def" |
647 | #include "EBCDIC.def" |
648 | #include "Symbols.def" |
33af2bc7 |
649 | } |