Commit | Line | Data |
fcf2db38 |
1 | #define PERL_NO_GET_CONTEXT |
2 | |
2c674647 |
3 | #include "EXTERN.h" |
4 | #include "perl.h" |
5 | #include "XSUB.h" |
2f2b4ff2 |
6 | #define U8 U8 |
7 | #include "encode.h" |
94b89828 |
8 | #include "8859.h" |
2f2b4ff2 |
9 | #include "EBCDIC.h" |
10 | #include "Symbols.h" |
2c674647 |
11 | |
fcf2db38 |
12 | |
13 | #define UNIMPLEMENTED(x,y) y x (SV *sv, char *encoding) {dTHX; \ |
2f5768b8 |
14 | Perl_croak(aTHX_ "panic_unimplemented"); \ |
4a83738a |
15 | return (y)0; /* fool picky compilers */ \ |
87714904 |
16 | } |
67e989fb |
17 | UNIMPLEMENTED(_encoded_utf8_to_bytes, I32) |
18 | UNIMPLEMENTED(_encoded_bytes_to_utf8, I32) |
19 | |
9df9a5cd |
20 | #if defined(USE_PERLIO) && !defined(USE_SFIO) |
72e44f29 |
21 | /* Define an encoding "layer" in the perliol.h sense. |
22 | The layer defined here "inherits" in an object-oriented sense from the |
23 | "perlio" layer with its PerlIOBuf_* "methods". |
24 | The implementation is particularly efficient as until Encode settles down |
25 | there is no point in tryint to tune it. |
26 | |
27 | The layer works by overloading the "fill" and "flush" methods. |
28 | |
29 | "fill" calls "SUPER::fill" in perl terms, then calls the encode OO perl API |
30 | to convert the encoded data to UTF-8 form, then copies it back to the |
31 | buffer. The "base class's" read methods then see the UTF-8 data. |
32 | |
33 | "flush" transforms the UTF-8 data deposited by the "base class's write |
34 | method in the buffer back into the encoded form using the encode OO perl API, |
35 | then copies data back into the buffer and calls "SUPER::flush. |
36 | |
37 | Note that "flush" is _also_ called for read mode - we still do the (back)-translate |
38 | so that the the base class's "flush" sees the correct number of encoded chars |
39 | for positioning the seek pointer. (This double translation is the worst performance |
40 | issue - particularly with all-perl encode engine.) |
41 | |
42 | */ |
43 | |
44 | |
33af2bc7 |
45 | #include "perliol.h" |
46 | |
47 | typedef struct |
48 | { |
49 | PerlIOBuf base; /* PerlIOBuf stuff */ |
50 | SV * bufsv; |
51 | SV * enc; |
52 | } PerlIOEncode; |
53 | |
e3f3bf95 |
54 | SV * |
ecdeb87c |
55 | PerlIOEncode_getarg(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e3f3bf95 |
56 | { |
57 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
58 | SV *sv = &PL_sv_undef; |
59 | if (e->enc) |
60 | { |
61 | dSP; |
62 | ENTER; |
63 | SAVETMPS; |
64 | PUSHMARK(sp); |
65 | XPUSHs(e->enc); |
66 | PUTBACK; |
67 | if (perl_call_method("name",G_SCALAR) == 1) |
68 | { |
69 | SPAGAIN; |
70 | sv = newSVsv(POPs); |
71 | PUTBACK; |
72 | } |
73 | } |
74 | return sv; |
75 | } |
33af2bc7 |
76 | |
77 | IV |
e3f3bf95 |
78 | PerlIOEncode_pushed(PerlIO *f, const char *mode, SV *arg) |
33af2bc7 |
79 | { |
80 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
81 | dTHX; |
82 | dSP; |
83 | IV code; |
e3f3bf95 |
84 | code = PerlIOBuf_pushed(f,mode,Nullsv); |
33af2bc7 |
85 | ENTER; |
86 | SAVETMPS; |
87 | PUSHMARK(sp); |
e3f3bf95 |
88 | XPUSHs(arg); |
33af2bc7 |
89 | PUTBACK; |
51ef4e11 |
90 | if (perl_call_pv("Encode::find_encoding",G_SCALAR) != 1) |
52744f63 |
91 | { |
92 | /* should never happen */ |
51ef4e11 |
93 | Perl_die(aTHX_ "Encode::find_encoding did not return a value"); |
52744f63 |
94 | return -1; |
95 | } |
33af2bc7 |
96 | SPAGAIN; |
97 | e->enc = POPs; |
98 | PUTBACK; |
99 | if (!SvROK(e->enc)) |
52744f63 |
100 | { |
101 | e->enc = Nullsv; |
102 | errno = EINVAL; |
29b291f7 |
103 | Perl_warner(aTHX_ WARN_IO, "Cannot find encoding \"%"SVf"\"", arg); |
b26b1ab5 |
104 | code = -1; |
105 | } |
106 | else |
107 | { |
108 | SvREFCNT_inc(e->enc); |
109 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
52744f63 |
110 | } |
33af2bc7 |
111 | FREETMPS; |
112 | LEAVE; |
33af2bc7 |
113 | return code; |
114 | } |
115 | |
116 | IV |
117 | PerlIOEncode_popped(PerlIO *f) |
118 | { |
119 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
120 | dTHX; |
121 | if (e->enc) |
122 | { |
123 | SvREFCNT_dec(e->enc); |
124 | e->enc = Nullsv; |
125 | } |
126 | if (e->bufsv) |
127 | { |
128 | SvREFCNT_dec(e->bufsv); |
129 | e->bufsv = Nullsv; |
130 | } |
131 | return 0; |
132 | } |
133 | |
134 | STDCHAR * |
135 | PerlIOEncode_get_base(PerlIO *f) |
136 | { |
137 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
138 | dTHX; |
139 | if (!e->base.bufsiz) |
140 | e->base.bufsiz = 1024; |
141 | if (!e->bufsv) |
142 | { |
143 | e->bufsv = newSV(e->base.bufsiz); |
144 | sv_setpvn(e->bufsv,"",0); |
145 | } |
62e8870c |
146 | e->base.buf = (STDCHAR *)SvPVX(e->bufsv); |
33af2bc7 |
147 | if (!e->base.ptr) |
148 | e->base.ptr = e->base.buf; |
149 | if (!e->base.end) |
150 | e->base.end = e->base.buf; |
151 | if (e->base.ptr < e->base.buf || e->base.ptr > e->base.buf+SvLEN(e->bufsv)) |
152 | { |
153 | Perl_warn(aTHX_ " ptr %p(%p)%p", |
154 | e->base.buf,e->base.ptr,e->base.buf+SvLEN(e->bufsv)); |
155 | abort(); |
156 | } |
157 | if (SvLEN(e->bufsv) < e->base.bufsiz) |
158 | { |
159 | SSize_t poff = e->base.ptr - e->base.buf; |
160 | SSize_t eoff = e->base.end - e->base.buf; |
62e8870c |
161 | e->base.buf = (STDCHAR *)SvGROW(e->bufsv,e->base.bufsiz); |
33af2bc7 |
162 | e->base.ptr = e->base.buf + poff; |
163 | e->base.end = e->base.buf + eoff; |
164 | } |
165 | if (e->base.ptr < e->base.buf || e->base.ptr > e->base.buf+SvLEN(e->bufsv)) |
166 | { |
167 | Perl_warn(aTHX_ " ptr %p(%p)%p", |
168 | e->base.buf,e->base.ptr,e->base.buf+SvLEN(e->bufsv)); |
169 | abort(); |
170 | } |
171 | return e->base.buf; |
172 | } |
173 | |
33af2bc7 |
174 | IV |
175 | PerlIOEncode_fill(PerlIO *f) |
176 | { |
177 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
178 | dTHX; |
179 | dSP; |
180 | IV code; |
33af2bc7 |
181 | code = PerlIOBuf_fill(f); |
182 | if (code == 0) |
183 | { |
184 | SV *uni; |
72e44f29 |
185 | STRLEN len; |
186 | char *s; |
187 | /* Set SV that is the buffer to be buf..ptr */ |
33af2bc7 |
188 | SvCUR_set(e->bufsv, e->base.end - e->base.buf); |
189 | SvUTF8_off(e->bufsv); |
190 | ENTER; |
191 | SAVETMPS; |
192 | PUSHMARK(sp); |
193 | XPUSHs(e->enc); |
194 | XPUSHs(e->bufsv); |
195 | XPUSHs(&PL_sv_yes); |
196 | PUTBACK; |
50d26985 |
197 | if (perl_call_method("decode",G_SCALAR) != 1) |
33af2bc7 |
198 | code = -1; |
199 | SPAGAIN; |
200 | uni = POPs; |
201 | PUTBACK; |
72e44f29 |
202 | /* Now get translated string (forced to UTF-8) and copy back to buffer |
203 | don't use sv_setsv as that may "steal" PV from returned temp |
204 | and so free() our known-large-enough buffer. |
205 | sv_setpvn() should do but let us do it long hand. |
206 | */ |
207 | s = SvPVutf8(uni,len); |
208 | if (s != SvPVX(e->bufsv)) |
209 | { |
62e8870c |
210 | e->base.buf = (STDCHAR *)SvGROW(e->bufsv,len); |
72e44f29 |
211 | Move(s,e->base.buf,len,char); |
212 | SvCUR_set(e->bufsv,len); |
213 | } |
214 | SvUTF8_on(e->bufsv); |
215 | e->base.end = e->base.buf+len; |
33af2bc7 |
216 | e->base.ptr = e->base.buf; |
217 | FREETMPS; |
218 | LEAVE; |
219 | } |
220 | return code; |
221 | } |
222 | |
223 | IV |
224 | PerlIOEncode_flush(PerlIO *f) |
225 | { |
226 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
227 | IV code = 0; |
8040349a |
228 | if (e->bufsv && (PerlIOBase(f)->flags & (PERLIO_F_RDBUF|PERLIO_F_WRBUF)) |
229 | &&(e->base.ptr > e->base.buf) |
230 | ) |
33af2bc7 |
231 | { |
8040349a |
232 | dTHX; |
33af2bc7 |
233 | dSP; |
234 | SV *str; |
235 | char *s; |
236 | STRLEN len; |
72e44f29 |
237 | SSize_t left = 0; |
238 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
239 | { |
240 | /* This is really just a flag to see if we took all the data, if |
241 | we did PerlIOBase_flush avoids a seek to lower layer. |
242 | Need to revisit if we start getting clever with unreads or seeks-in-buffer |
243 | */ |
244 | left = e->base.end - e->base.ptr; |
245 | } |
33af2bc7 |
246 | ENTER; |
247 | SAVETMPS; |
248 | PUSHMARK(sp); |
249 | XPUSHs(e->enc); |
72e44f29 |
250 | SvCUR_set(e->bufsv, e->base.ptr - e->base.buf); |
33af2bc7 |
251 | SvUTF8_on(e->bufsv); |
252 | XPUSHs(e->bufsv); |
253 | XPUSHs(&PL_sv_yes); |
254 | PUTBACK; |
50d26985 |
255 | if (perl_call_method("encode",G_SCALAR) != 1) |
33af2bc7 |
256 | code = -1; |
257 | SPAGAIN; |
258 | str = POPs; |
259 | PUTBACK; |
72e44f29 |
260 | s = SvPV(str,len); |
261 | if (s != SvPVX(e->bufsv)) |
262 | { |
62e8870c |
263 | e->base.buf = (STDCHAR *)SvGROW(e->bufsv,len); |
72e44f29 |
264 | Move(s,e->base.buf,len,char); |
265 | SvCUR_set(e->bufsv,len); |
266 | } |
33af2bc7 |
267 | SvUTF8_off(e->bufsv); |
72e44f29 |
268 | e->base.ptr = e->base.buf+len; |
269 | /* restore end != ptr as inequality is used by PerlIOBuf_flush in read case */ |
270 | e->base.end = e->base.ptr + left; |
33af2bc7 |
271 | FREETMPS; |
272 | LEAVE; |
273 | if (PerlIOBuf_flush(f) != 0) |
274 | code = -1; |
275 | } |
276 | return code; |
277 | } |
278 | |
279 | IV |
280 | PerlIOEncode_close(PerlIO *f) |
281 | { |
282 | PerlIOEncode *e = PerlIOSelf(f,PerlIOEncode); |
283 | IV code = PerlIOBase_close(f); |
284 | dTHX; |
285 | if (e->bufsv) |
286 | { |
287 | SvREFCNT_dec(e->bufsv); |
288 | e->bufsv = Nullsv; |
289 | } |
290 | e->base.buf = NULL; |
291 | e->base.ptr = NULL; |
292 | e->base.end = NULL; |
293 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
294 | return code; |
295 | } |
296 | |
72e44f29 |
297 | Off_t |
298 | PerlIOEncode_tell(PerlIO *f) |
299 | { |
a999f61b |
300 | dTHX; |
72e44f29 |
301 | PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); |
302 | /* Unfortunately the only way to get a postion is to back-translate, |
303 | the UTF8-bytes we have buf..ptr and adjust accordingly. |
304 | But we will try and save any unread data in case stream |
305 | is un-seekable. |
306 | */ |
307 | if ((PerlIOBase(f)->flags & PERLIO_F_RDBUF) && b->ptr < b->end) |
308 | { |
309 | Size_t count = b->end - b->ptr; |
e3f3bf95 |
310 | PerlIO_push(aTHX_ f,&PerlIO_pending,"r",Nullsv); |
72e44f29 |
311 | /* Save what we have left to read */ |
312 | PerlIOSelf(f,PerlIOBuf)->bufsiz = count; |
313 | PerlIO_unread(f,b->ptr,count); |
314 | /* There isn't any unread data - we just saved it - so avoid the lower seek */ |
315 | b->end = b->ptr; |
316 | /* Flush ourselves - now one layer down, |
317 | this does the back translate and adjusts position |
318 | */ |
319 | PerlIO_flush(PerlIONext(f)); |
320 | /* Set position of the saved data */ |
321 | PerlIOSelf(f,PerlIOBuf)->posn = b->posn; |
322 | } |
323 | else |
324 | { |
325 | PerlIO_flush(f); |
326 | } |
327 | return b->posn; |
328 | } |
329 | |
8cf8f3d1 |
330 | PerlIO * |
ecdeb87c |
331 | PerlIOEncode_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *params, int flags) |
8cf8f3d1 |
332 | { |
ecdeb87c |
333 | if ((f = PerlIOBase_dup(aTHX_ f, o, params, flags))) |
9f16d962 |
334 | { |
335 | PerlIOEncode *fe = PerlIOSelf(f,PerlIOEncode); |
336 | PerlIOEncode *oe = PerlIOSelf(o,PerlIOEncode); |
337 | if (oe->enc) |
338 | { |
339 | fe->enc = PerlIO_sv_dup(aTHX_ oe->enc, params); |
340 | } |
341 | } |
342 | return f; |
8cf8f3d1 |
343 | } |
344 | |
33af2bc7 |
345 | PerlIO_funcs PerlIO_encode = { |
72e44f29 |
346 | "encoding", |
33af2bc7 |
347 | sizeof(PerlIOEncode), |
348 | PERLIO_K_BUFFERED, |
33af2bc7 |
349 | PerlIOEncode_pushed, |
350 | PerlIOEncode_popped, |
e3f3bf95 |
351 | PerlIOBuf_open, |
352 | PerlIOEncode_getarg, |
353 | PerlIOBase_fileno, |
8cf8f3d1 |
354 | PerlIOEncode_dup, |
33af2bc7 |
355 | PerlIOBuf_read, |
356 | PerlIOBuf_unread, |
357 | PerlIOBuf_write, |
358 | PerlIOBuf_seek, |
72e44f29 |
359 | PerlIOEncode_tell, |
33af2bc7 |
360 | PerlIOEncode_close, |
361 | PerlIOEncode_flush, |
362 | PerlIOEncode_fill, |
363 | PerlIOBase_eof, |
364 | PerlIOBase_error, |
365 | PerlIOBase_clearerr, |
f6c77cf1 |
366 | PerlIOBase_setlinebuf, |
33af2bc7 |
367 | PerlIOEncode_get_base, |
368 | PerlIOBuf_bufsiz, |
369 | PerlIOBuf_get_ptr, |
370 | PerlIOBuf_get_cnt, |
371 | PerlIOBuf_set_ptrcnt, |
372 | }; |
9df9a5cd |
373 | #endif /* encode layer */ |
33af2bc7 |
374 | |
2f2b4ff2 |
375 | void |
376 | Encode_Define(pTHX_ encode_t *enc) |
377 | { |
51ef4e11 |
378 | dSP; |
2f2b4ff2 |
379 | HV *stash = gv_stashpv("Encode::XS", TRUE); |
380 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))),stash); |
dcda1f94 |
381 | int i = 0; |
51ef4e11 |
382 | PUSHMARK(sp); |
383 | XPUSHs(sv); |
dcda1f94 |
384 | while (enc->name[i]) |
385 | { |
386 | const char *name = enc->name[i++]; |
51ef4e11 |
387 | XPUSHs(sv_2mortal(newSVpvn(name,strlen(name)))); |
dcda1f94 |
388 | } |
51ef4e11 |
389 | PUTBACK; |
390 | call_pv("Encode::define_encoding",G_DISCARD); |
dcda1f94 |
391 | SvREFCNT_dec(sv); |
2f2b4ff2 |
392 | } |
393 | |
183a2d84 |
394 | void call_failure (SV *routine, U8* done, U8* dest, U8* orig) {} |
67e989fb |
395 | |
2f2b4ff2 |
396 | static SV * |
397 | encode_method(pTHX_ encode_t *enc, encpage_t *dir, SV *src, int check) |
398 | { |
399 | STRLEN slen; |
400 | U8 *s = (U8 *) SvPV(src,slen); |
401 | SV *dst = sv_2mortal(newSV(2*slen+1)); |
402 | if (slen) |
403 | { |
404 | U8 *d = (U8 *) SvGROW(dst, 2*slen+1); |
405 | STRLEN dlen = SvLEN(dst); |
406 | int code; |
9b37254d |
407 | while ((code = do_encode(dir,s,&slen,d,dlen,&dlen,!check))) |
2f2b4ff2 |
408 | { |
409 | SvCUR_set(dst,dlen); |
410 | SvPOK_on(dst); |
9b37254d |
411 | |
412 | if (code == ENCODE_FALLBACK) |
413 | break; |
414 | |
2f2b4ff2 |
415 | switch(code) |
416 | { |
417 | case ENCODE_NOSPACE: |
418 | { |
419 | STRLEN need = (slen) ? (SvLEN(dst)*SvCUR(src)/slen) : (dlen + UTF8_MAXLEN); |
420 | if (need <= SvLEN(dst)) |
421 | need += UTF8_MAXLEN; |
422 | d = (U8 *) SvGROW(dst, need); |
423 | dlen = SvLEN(dst); |
424 | slen = SvCUR(src); |
425 | break; |
426 | } |
427 | |
428 | case ENCODE_NOREP: |
429 | if (dir == enc->f_utf8) |
430 | { |
431 | if (!check && ckWARN_d(WARN_UTF8)) |
432 | { |
433 | STRLEN clen; |
9041c2e3 |
434 | UV ch = utf8n_to_uvuni(s+slen,(SvCUR(src)-slen),&clen,0); |
435 | Perl_warner(aTHX_ WARN_UTF8, "\"\\N{U+%"UVxf"}\" does not map to %s", ch, enc->name[0]); |
2f2b4ff2 |
436 | /* FIXME: Skip over the character, copy in replacement and continue |
437 | * but that is messy so for now just fail. |
438 | */ |
439 | return &PL_sv_undef; |
440 | } |
441 | else |
442 | { |
443 | return &PL_sv_undef; |
444 | } |
445 | } |
446 | else |
447 | { |
448 | /* UTF-8 is supposed to be "Universal" so should not happen */ |
449 | Perl_croak(aTHX_ "%s '%.*s' does not map to UTF-8", |
dcda1f94 |
450 | enc->name[0], (int)(SvCUR(src)-slen),s+slen); |
2f2b4ff2 |
451 | } |
452 | break; |
453 | |
454 | case ENCODE_PARTIAL: |
455 | if (!check && ckWARN_d(WARN_UTF8)) |
456 | { |
457 | Perl_warner(aTHX_ WARN_UTF8, "Partial %s character", |
dcda1f94 |
458 | (dir == enc->f_utf8) ? "UTF-8" : enc->name[0]); |
2f2b4ff2 |
459 | } |
460 | return &PL_sv_undef; |
461 | |
462 | default: |
463 | Perl_croak(aTHX_ "Unexpected code %d converting %s %s", |
dcda1f94 |
464 | code, (dir == enc->f_utf8) ? "to" : "from",enc->name[0]); |
2f2b4ff2 |
465 | return &PL_sv_undef; |
466 | } |
467 | } |
468 | SvCUR_set(dst,dlen); |
469 | SvPOK_on(dst); |
470 | if (check) |
471 | { |
472 | if (slen < SvCUR(src)) |
473 | { |
474 | Move(s+slen,s,SvCUR(src)-slen,U8); |
475 | } |
476 | SvCUR_set(src,SvCUR(src)-slen); |
477 | } |
478 | } |
8040349a |
479 | else |
480 | { |
481 | SvCUR_set(dst,slen); |
482 | SvPOK_on(dst); |
483 | } |
2f2b4ff2 |
484 | return dst; |
485 | } |
486 | |
50d26985 |
487 | MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_ |
2f2b4ff2 |
488 | |
489 | PROTOTYPES: ENABLE |
490 | |
491 | void |
691638dd |
492 | Method_decode(obj,src,check = FALSE) |
2f2b4ff2 |
493 | SV * obj |
494 | SV * src |
691638dd |
495 | bool check |
2f2b4ff2 |
496 | CODE: |
497 | { |
498 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
499 | ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check); |
500 | SvUTF8_on(ST(0)); |
501 | XSRETURN(1); |
502 | } |
503 | |
504 | void |
691638dd |
505 | Method_encode(obj,src,check = FALSE) |
2f2b4ff2 |
506 | SV * obj |
507 | SV * src |
691638dd |
508 | bool check |
2f2b4ff2 |
509 | CODE: |
510 | { |
511 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
512 | sv_utf8_upgrade(src); |
513 | ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check); |
514 | XSRETURN(1); |
515 | } |
516 | |
67e989fb |
517 | MODULE = Encode PACKAGE = Encode |
2c674647 |
518 | |
519 | PROTOTYPES: ENABLE |
520 | |
67e989fb |
521 | I32 |
2c674647 |
522 | _bytes_to_utf8(sv, ...) |
67e989fb |
523 | SV * sv |
2c674647 |
524 | CODE: |
67e989fb |
525 | { |
526 | SV * encoding = items == 2 ? ST(1) : Nullsv; |
527 | |
528 | if (encoding) |
529 | RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding)); |
530 | else { |
531 | STRLEN len; |
183a2d84 |
532 | U8* s = (U8*)SvPV(sv, len); |
67e989fb |
533 | U8* converted; |
534 | |
535 | converted = bytes_to_utf8(s, &len); /* This allocs */ |
183a2d84 |
536 | sv_setpvn(sv, (char *)converted, len); |
67e989fb |
537 | SvUTF8_on(sv); /* XXX Should we? */ |
538 | Safefree(converted); /* ... so free it */ |
539 | RETVAL = len; |
540 | } |
541 | } |
2c674647 |
542 | OUTPUT: |
67e989fb |
543 | RETVAL |
2c674647 |
544 | |
67e989fb |
545 | I32 |
2c674647 |
546 | _utf8_to_bytes(sv, ...) |
67e989fb |
547 | SV * sv |
2c674647 |
548 | CODE: |
67e989fb |
549 | { |
550 | SV * to = items > 1 ? ST(1) : Nullsv; |
551 | SV * check = items > 2 ? ST(2) : Nullsv; |
87714904 |
552 | |
67e989fb |
553 | if (to) |
554 | RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to)); |
555 | else { |
67e989fb |
556 | STRLEN len; |
b113ac0e |
557 | U8 *s = (U8*)SvPV(sv, len); |
67e989fb |
558 | |
9c5ffd7c |
559 | RETVAL = 0; |
67e989fb |
560 | if (SvTRUE(check)) { |
561 | /* Must do things the slow way */ |
562 | U8 *dest; |
87714904 |
563 | U8 *src = (U8*)savepv((char *)s); /* We need a copy to pass to check() */ |
67e989fb |
564 | U8 *send = s + len; |
565 | |
566 | New(83, dest, len, U8); /* I think */ |
567 | |
568 | while (s < send) { |
569 | if (*s < 0x80) |
570 | *dest++ = *s++; |
571 | else { |
b113ac0e |
572 | STRLEN ulen; |
573 | UV uv = *s++; |
87714904 |
574 | |
67e989fb |
575 | /* Have to do it all ourselves because of error routine, |
576 | aargh. */ |
577 | if (!(uv & 0x40)) |
578 | goto failure; |
579 | if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; } |
580 | else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; } |
581 | else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; } |
582 | else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; } |
583 | else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; } |
584 | else if (!(uv & 0x01)) { ulen = 7; uv = 0; } |
585 | else { ulen = 13; uv = 0; } |
87714904 |
586 | |
67e989fb |
587 | /* Note change to utf8.c variable naming, for variety */ |
588 | while (ulen--) { |
589 | if ((*s & 0xc0) != 0x80) |
590 | goto failure; |
87714904 |
591 | |
67e989fb |
592 | else |
593 | uv = (uv << 6) | (*s++ & 0x3f); |
87714904 |
594 | } |
67e989fb |
595 | if (uv > 256) { |
596 | failure: |
597 | call_failure(check, s, dest, src); |
598 | /* Now what happens? */ |
599 | } |
600 | *dest++ = (U8)uv; |
601 | } |
602 | } |
603 | } else |
604 | RETVAL = (utf8_to_bytes(s, &len) ? len : 0); |
605 | } |
2c674647 |
606 | } |
607 | OUTPUT: |
608 | RETVAL |
609 | |
2c674647 |
610 | bool |
4411f3b6 |
611 | is_utf8(sv, check = FALSE) |
612 | SV * sv |
613 | bool check |
2c674647 |
614 | CODE: |
615 | { |
2c674647 |
616 | if (SvPOK(sv)) { |
4411f3b6 |
617 | RETVAL = SvUTF8(sv) ? TRUE : FALSE; |
2c674647 |
618 | if (RETVAL && |
4411f3b6 |
619 | check && |
2c674647 |
620 | !is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) |
621 | RETVAL = FALSE; |
622 | } else { |
623 | RETVAL = FALSE; |
624 | } |
625 | } |
626 | OUTPUT: |
627 | RETVAL |
628 | |
629 | SV * |
4411f3b6 |
630 | _utf8_on(sv) |
2c674647 |
631 | SV * sv |
632 | CODE: |
633 | { |
634 | if (SvPOK(sv)) { |
87714904 |
635 | SV *rsv = newSViv(SvUTF8(sv)); |
2c674647 |
636 | RETVAL = rsv; |
637 | SvUTF8_on(sv); |
638 | } else { |
639 | RETVAL = &PL_sv_undef; |
640 | } |
641 | } |
642 | OUTPUT: |
643 | RETVAL |
644 | |
645 | SV * |
4411f3b6 |
646 | _utf8_off(sv) |
2c674647 |
647 | SV * sv |
648 | CODE: |
649 | { |
650 | if (SvPOK(sv)) { |
87714904 |
651 | SV *rsv = newSViv(SvUTF8(sv)); |
2c674647 |
652 | RETVAL = rsv; |
653 | SvUTF8_off(sv); |
654 | } else { |
655 | RETVAL = &PL_sv_undef; |
656 | } |
657 | } |
658 | OUTPUT: |
659 | RETVAL |
660 | |
33af2bc7 |
661 | BOOT: |
662 | { |
6a59c517 |
663 | #if defined(USE_PERLIO) && !defined(USE_SFIO) |
a999f61b |
664 | PerlIO_define_layer(aTHX_ &PerlIO_encode); |
33af2bc7 |
665 | #endif |
94b89828 |
666 | #include "8859.def" |
2f2b4ff2 |
667 | #include "EBCDIC.def" |
668 | #include "Symbols.def" |
33af2bc7 |
669 | } |