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Silence a couple of VC++ compiler warnings
[p5sagit/p5-mst-13.2.git] / ext / Encode / Encode.xs
CommitLineData
85982a32 1/*
7828f908 2 $Id: Encode.xs,v 2.13 2007/05/29 07:35:27 dankogai Exp dankogai $
85982a32 3 */
4
fcf2db38 5#define PERL_NO_GET_CONTEXT
2c674647 6#include "EXTERN.h"
7#include "perl.h"
8#include "XSUB.h"
2f2b4ff2 9#define U8 U8
10#include "encode.h"
10c5ecbb 11
12# define PERLIO_MODNAME "PerlIO::encoding"
0ab8f81e 13# define PERLIO_FILENAME "PerlIO/encoding.pm"
aae85ceb 14
85982a32 15/* set 1 or more to profile. t/encoding.t dumps core because of
16 Perl_warner and PerlIO don't work well */
c6a7db43 17#define ENCODE_XS_PROFILE 0
39cf9a5e 18
85982a32 19/* set 0 to disable floating point to calculate buffer size for
20 encode_method(). 1 is recommended. 2 restores NI-S original */
c6a7db43 21#define ENCODE_XS_USEFP 1
39cf9a5e 22
fcf2db38 23#define UNIMPLEMENTED(x,y) y x (SV *sv, char *encoding) {dTHX; \
2f5768b8 24 Perl_croak(aTHX_ "panic_unimplemented"); \
d1256cb1 25 return (y)0; /* fool picky compilers */ \
87714904 26 }
85982a32 27/**/
011b2d2f 28
7e9a885a 29UNIMPLEMENTED(_encoded_utf8_to_bytes, I32)
30UNIMPLEMENTED(_encoded_bytes_to_utf8, I32)
33af2bc7 31
7f0d54d7 32#define UTF8_ALLOW_STRICT 0
33#define UTF8_ALLOW_NONSTRICT (UTF8_ALLOW_ANY & \
34 ~(UTF8_ALLOW_CONTINUATION | \
35 UTF8_ALLOW_NON_CONTINUATION | \
36 UTF8_ALLOW_LONG))
37
8e180e82 38static SV* fallback_cb = (SV*)NULL ;
39
b0b300a3 40void
aa0053b7 41Encode_XSEncoding(pTHX_ encode_t * enc)
2f2b4ff2 42{
aa0053b7 43 dSP;
44 HV *stash = gv_stashpv("Encode::XS", TRUE);
45 SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash);
46 int i = 0;
47 PUSHMARK(sp);
48 XPUSHs(sv);
49 while (enc->name[i]) {
d1256cb1 50 const char *name = enc->name[i++];
51 XPUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
aa0053b7 52 }
53 PUTBACK;
54 call_pv("Encode::define_encoding", G_DISCARD);
55 SvREFCNT_dec(sv);
2f2b4ff2 56}
57
aa0053b7 58void
59call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig)
60{
85982a32 61 /* Exists for breakpointing */
aa0053b7 62}
67e989fb 63
85982a32 64
2fc614e0 65#define ERR_ENCODE_NOMAP "\"\\x{%04" UVxf "}\" does not map to %s"
66#define ERR_DECODE_NOMAP "%s \"\\x%02" UVXf "\" does not map to Unicode"
67
2f2b4ff2 68static SV *
8e180e82 69do_fallback_cb(pTHX_ UV ch)
70{
71 dSP;
72 int argc;
7828f908 73 SV *temp, *retval;
8e180e82 74 ENTER;
75 SAVETMPS;
76 PUSHMARK(sp);
77 XPUSHs(sv_2mortal(newSVnv((UV)ch)));
78 PUTBACK;
79 argc = call_sv(fallback_cb, G_SCALAR);
80 SPAGAIN;
81 if (argc != 1){
d1256cb1 82 croak("fallback sub must return scalar!");
8e180e82 83 }
7828f908 84 temp = newSVsv(POPs);
8e180e82 85 PUTBACK;
86 FREETMPS;
87 LEAVE;
7828f908 88 retval = newSVpv("",0);
89 sv_catsv(retval, temp);
6ead8143 90 SvREFCNT_dec(temp);
8e180e82 91 return retval;
92}
93
94static SV *
0629a5b3 95encode_method(pTHX_ const encode_t * enc, const encpage_t * dir, SV * src,
d1256cb1 96 int check, STRLEN * offset, SV * term, int * retcode)
2f2b4ff2 97{
aa0053b7 98 STRLEN slen;
99 U8 *s = (U8 *) SvPV(src, slen);
3aececda 100 STRLEN tlen = slen;
101 STRLEN ddone = 0;
102 STRLEN sdone = 0;
39cf9a5e 103
3c49ab08 104 /* We allocate slen+1.
85982a32 105 PerlIO dumps core if this value is smaller than this. */
3c49ab08 106 SV *dst = sv_2mortal(newSV(slen+1));
85982a32 107 U8 *d = (U8 *)SvPVX(dst);
108 STRLEN dlen = SvLEN(dst)-1;
220e2d4e 109 int code = 0;
110 STRLEN trmlen = 0;
cc7dbc11 111 U8 *trm = term ? (U8*) SvPV(term, trmlen) : NULL;
220e2d4e 112
113 if (offset) {
114 s += *offset;
6be7c101 115 if (slen > *offset){ /* safeguard against slen overflow */
d1256cb1 116 slen -= *offset;
6be7c101 117 }else{
d1256cb1 118 slen = 0;
6be7c101 119 }
220e2d4e 120 tlen = slen;
121 }
85982a32 122
6be7c101 123 if (slen == 0){
d1256cb1 124 SvCUR_set(dst, 0);
125 SvPOK_only(dst);
126 goto ENCODE_END;
85982a32 127 }
128
220e2d4e 129 while( (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check,
d1256cb1 130 trm, trmlen)) )
85982a32 131 {
d1256cb1 132 SvCUR_set(dst, dlen+ddone);
133 SvPOK_only(dst);
134
135 if (code == ENCODE_FALLBACK || code == ENCODE_PARTIAL ||
136 code == ENCODE_FOUND_TERM) {
137 break;
138 }
139 switch (code) {
140 case ENCODE_NOSPACE:
141 {
142 STRLEN more = 0; /* make sure you initialize! */
143 STRLEN sleft;
144 sdone += slen;
145 ddone += dlen;
146 sleft = tlen - sdone;
fcb875d4 147#if ENCODE_XS_PROFILE >= 2
d1256cb1 148 Perl_warn(aTHX_
149 "more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n",
150 more, sdone, sleft, SvLEN(dst));
fcb875d4 151#endif
d1256cb1 152 if (sdone != 0) { /* has src ever been processed ? */
39cf9a5e 153#if ENCODE_XS_USEFP == 2
d1256cb1 154 more = (1.0*tlen*SvLEN(dst)+sdone-1)/sdone
155 - SvLEN(dst);
39cf9a5e 156#elif ENCODE_XS_USEFP
d1256cb1 157 more = (STRLEN)((1.0*SvLEN(dst)+1)/sdone * sleft);
39cf9a5e 158#else
d1256cb1 159 /* safe until SvLEN(dst) == MAX_INT/16 */
160 more = (16*SvLEN(dst)+1)/sdone/16 * sleft;
39cf9a5e 161#endif
d1256cb1 162 }
163 more += UTF8_MAXLEN; /* insurance policy */
164 d = (U8 *) SvGROW(dst, SvLEN(dst) + more);
165 /* dst need to grow need MORE bytes! */
166 if (ddone >= SvLEN(dst)) {
167 Perl_croak(aTHX_ "Destination couldn't be grown.");
168 }
169 dlen = SvLEN(dst)-ddone-1;
170 d += ddone;
171 s += slen;
172 slen = tlen-sdone;
173 continue;
174 }
175 case ENCODE_NOREP:
176 /* encoding */
177 if (dir == enc->f_utf8) {
178 STRLEN clen;
179 UV ch =
180 utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
181 &clen, UTF8_ALLOW_ANY|UTF8_CHECK_ONLY);
182 /* if non-representable multibyte prefix at end of current buffer - break*/
183 if (clen > tlen - sdone) break;
184 if (check & ENCODE_DIE_ON_ERR) {
185 Perl_croak(aTHX_ ERR_ENCODE_NOMAP,
186 (UV)ch, enc->name[0]);
187 return &PL_sv_undef; /* never reaches but be safe */
188 }
189 if (check & ENCODE_WARN_ON_ERR){
190 Perl_warner(aTHX_ packWARN(WARN_UTF8),
191 ERR_ENCODE_NOMAP, (UV)ch, enc->name[0]);
192 }
193 if (check & ENCODE_RETURN_ON_ERR){
194 goto ENCODE_SET_SRC;
195 }
196 if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
197 SV* subchar =
198 (fallback_cb != (SV*)NULL) ? do_fallback_cb(aTHX_ ch) :
199 newSVpvf(check & ENCODE_PERLQQ ? "\\x{%04"UVxf"}" :
200 check & ENCODE_HTMLCREF ? "&#%" UVuf ";" :
201 "&#x%" UVxf ";", (UV)ch);
202 sdone += slen + clen;
203 ddone += dlen + SvCUR(subchar);
204 sv_catsv(dst, subchar);
205 SvREFCNT_dec(subchar);
206 } else {
207 /* fallback char */
208 sdone += slen + clen;
209 ddone += dlen + enc->replen;
210 sv_catpvn(dst, (char*)enc->rep, enc->replen);
211 }
212 }
213 /* decoding */
214 else {
215 if (check & ENCODE_DIE_ON_ERR){
216 Perl_croak(aTHX_ ERR_DECODE_NOMAP,
436c6dd3 217 enc->name[0], (UV)s[slen]);
d1256cb1 218 return &PL_sv_undef; /* never reaches but be safe */
219 }
220 if (check & ENCODE_WARN_ON_ERR){
221 Perl_warner(
222 aTHX_ packWARN(WARN_UTF8),
223 ERR_DECODE_NOMAP,
436c6dd3 224 enc->name[0], (UV)s[slen]);
d1256cb1 225 }
226 if (check & ENCODE_RETURN_ON_ERR){
227 goto ENCODE_SET_SRC;
228 }
229 if (check &
230 (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
231 SV* subchar =
232 (fallback_cb != (SV*)NULL) ?
233 do_fallback_cb(aTHX_ (UV)s[slen]) :
234 newSVpvf("\\x%02" UVXf, (UV)s[slen]);
235 sdone += slen + 1;
236 ddone += dlen + SvCUR(subchar);
237 sv_catsv(dst, subchar);
238 SvREFCNT_dec(subchar);
239 } else {
240 sdone += slen + 1;
241 ddone += dlen + strlen(FBCHAR_UTF8);
242 sv_catpv(dst, FBCHAR_UTF8);
243 }
244 }
245 /* settle variables when fallback */
246 d = (U8 *)SvEND(dst);
b0b300a3 247 dlen = SvLEN(dst) - ddone - 1;
d1256cb1 248 s = (U8*)SvPVX(src) + sdone;
249 slen = tlen - sdone;
250 break;
251
252 default:
253 Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
254 code, (dir == enc->f_utf8) ? "to" : "from",
255 enc->name[0]);
256 return &PL_sv_undef;
257 }
85982a32 258 }
259 ENCODE_SET_SRC:
ca777f1c 260 if (check && !(check & ENCODE_LEAVE_SRC)){
d1256cb1 261 sdone = SvCUR(src) - (slen+sdone);
262 if (sdone) {
263 sv_setpvn(src, (char*)s+slen, sdone);
264 }
265 SvCUR_set(src, sdone);
2f2b4ff2 266 }
85982a32 267 /* warn("check = 0x%X, code = 0x%d\n", check, code); */
c6a7db43 268
85982a32 269 SvCUR_set(dst, dlen+ddone);
270 SvPOK_only(dst);
c6a7db43 271
39cf9a5e 272#if ENCODE_XS_PROFILE
273 if (SvCUR(dst) > SvCUR(src)){
d1256cb1 274 Perl_warn(aTHX_
275 "SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
276 SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
277 (SvLEN(dst) - SvCUR(dst))*1.0/SvLEN(dst)*100.0);
39cf9a5e 278 }
3c49ab08 279#endif
c6a7db43 280
220e2d4e 281 if (offset)
282 *offset += sdone + slen;
283
85982a32 284 ENCODE_END:
0b3236bb 285 *SvEND(dst) = '\0';
220e2d4e 286 if (retcode) *retcode = code;
aa0053b7 287 return dst;
2f2b4ff2 288}
289
7f0d54d7 290static bool
291strict_utf8(pTHX_ SV* sv)
292{
293 HV* hv;
294 SV** svp;
295 sv = SvRV(sv);
296 if (!sv || SvTYPE(sv) != SVt_PVHV)
297 return 0;
298 hv = (HV*)sv;
299 svp = hv_fetch(hv, "strict_utf8", 11, 0);
300 if (!svp)
301 return 0;
302 return SvTRUE(*svp);
303}
304
305static U8*
306process_utf8(pTHX_ SV* dst, U8* s, U8* e, int check,
307 bool encode, bool strict, bool stop_at_partial)
308{
309 UV uv;
310 STRLEN ulen;
311
312 SvPOK_only(dst);
313 SvCUR_set(dst,0);
314
315 while (s < e) {
316 if (UTF8_IS_INVARIANT(*s)) {
317 sv_catpvn(dst, (char *)s, 1);
318 s++;
319 continue;
320 }
321
322 if (UTF8_IS_START(*s)) {
323 U8 skip = UTF8SKIP(s);
324 if ((s + skip) > e) {
325 /* Partial character */
326 /* XXX could check that rest of bytes are UTF8_IS_CONTINUATION(ch) */
56ff7374 327 if (stop_at_partial || (check & ENCODE_STOP_AT_PARTIAL))
7f0d54d7 328 break;
329
330 goto malformed_byte;
331 }
332
333 uv = utf8n_to_uvuni(s, e - s, &ulen,
334 UTF8_CHECK_ONLY | (strict ? UTF8_ALLOW_STRICT :
335 UTF8_ALLOW_NONSTRICT)
336 );
337#if 1 /* perl-5.8.6 and older do not check UTF8_ALLOW_LONG */
d1256cb1 338 if (strict && uv > PERL_UNICODE_MAX)
1b9a72a9 339 ulen = (STRLEN) -1;
7f0d54d7 340#endif
341 if (ulen == -1) {
342 if (strict) {
343 uv = utf8n_to_uvuni(s, e - s, &ulen,
344 UTF8_CHECK_ONLY | UTF8_ALLOW_NONSTRICT);
345 if (ulen == -1)
346 goto malformed_byte;
347 goto malformed;
348 }
349 goto malformed_byte;
350 }
351
352
353 /* Whole char is good */
354 sv_catpvn(dst,(char *)s,skip);
355 s += skip;
356 continue;
357 }
358
359 /* If we get here there is something wrong with alleged UTF-8 */
360 malformed_byte:
361 uv = (UV)*s;
362 ulen = 1;
363
364 malformed:
365 if (check & ENCODE_DIE_ON_ERR){
366 if (encode)
367 Perl_croak(aTHX_ ERR_ENCODE_NOMAP, uv, "utf8");
368 else
369 Perl_croak(aTHX_ ERR_DECODE_NOMAP, "utf8", uv);
370 }
371 if (check & ENCODE_WARN_ON_ERR){
372 if (encode)
373 Perl_warner(aTHX_ packWARN(WARN_UTF8),
374 ERR_ENCODE_NOMAP, uv, "utf8");
375 else
376 Perl_warner(aTHX_ packWARN(WARN_UTF8),
377 ERR_DECODE_NOMAP, "utf8", uv);
378 }
379 if (check & ENCODE_RETURN_ON_ERR) {
380 break;
381 }
382 if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
383 SV* subchar = newSVpvf(check & ENCODE_PERLQQ ? (ulen == 1 ? "\\x%02" UVXf : "\\x{%04" UVXf "}"):
384 check & ENCODE_HTMLCREF ? "&#%" UVuf ";" :
385 "&#x%" UVxf ";", uv);
386 sv_catsv(dst, subchar);
387 SvREFCNT_dec(subchar);
388 } else {
389 sv_catpv(dst, FBCHAR_UTF8);
390 }
391 s += ulen;
392 }
393 *SvEND(dst) = '\0';
394
395 return s;
396}
397
398
ab3374e4 399MODULE = Encode PACKAGE = Encode::utf8 PREFIX = Method_
400
a0d8a30e 401PROTOTYPES: DISABLE
402
403void
b536bf57 404Method_decode_xs(obj,src,check = 0)
ab3374e4 405SV * obj
406SV * src
407int check
408CODE:
409{
410 STRLEN slen;
411 U8 *s = (U8 *) SvPV(src, slen);
412 U8 *e = (U8 *) SvEND(src);
b536bf57 413 SV *dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */
cc836e95 414
415 /*
7f0d54d7 416 * PerlIO check -- we assume the object is of PerlIO if renewed
cc836e95 417 */
f5a22bee 418 bool renewed = 0;
cc836e95 419 dSP; ENTER; SAVETMPS;
420 PUSHMARK(sp);
421 XPUSHs(obj);
422 PUTBACK;
423 if (call_method("renewed",G_SCALAR) == 1) {
d1256cb1 424 SPAGAIN;
425 renewed = (bool)POPi;
426 PUTBACK;
cc836e95 427#if 0
d1256cb1 428 fprintf(stderr, "renewed == %d\n", renewed);
cc836e95 429#endif
cc836e95 430 }
431 FREETMPS; LEAVE;
432 /* end PerlIO check */
433
ab3374e4 434 if (SvUTF8(src)) {
d1256cb1 435 s = utf8_to_bytes(s,&slen);
436 if (s) {
437 SvCUR_set(src,slen);
438 SvUTF8_off(src);
439 e = s+slen;
440 }
441 else {
442 croak("Cannot decode string with wide characters");
443 }
ab3374e4 444 }
7f0d54d7 445
446 s = process_utf8(aTHX_ dst, s, e, check, 0, strict_utf8(aTHX_ obj), renewed);
ab3374e4 447
448 /* Clear out translated part of source unless asked not to */
449 if (check && !(check & ENCODE_LEAVE_SRC)){
d1256cb1 450 slen = e-s;
451 if (slen) {
452 sv_setpvn(src, (char*)s, slen);
453 }
454 SvCUR_set(src, slen);
ab3374e4 455 }
456 SvUTF8_on(dst);
457 ST(0) = sv_2mortal(dst);
458 XSRETURN(1);
459}
460
461void
b536bf57 462Method_encode_xs(obj,src,check = 0)
ab3374e4 463SV * obj
464SV * src
465int check
466CODE:
467{
468 STRLEN slen;
469 U8 *s = (U8 *) SvPV(src, slen);
470 U8 *e = (U8 *) SvEND(src);
b536bf57 471 SV *dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */
ab3374e4 472 if (SvUTF8(src)) {
d1256cb1 473 /* Already encoded */
474 if (strict_utf8(aTHX_ obj)) {
475 s = process_utf8(aTHX_ dst, s, e, check, 1, 1, 0);
476 }
7f0d54d7 477 else {
478 /* trust it and just copy the octets */
479 sv_setpvn(dst,(char *)s,(e-s));
d1256cb1 480 s = e;
7f0d54d7 481 }
ab3374e4 482 }
483 else {
484 /* Native bytes - can always encode */
d1256cb1 485 U8 *d = (U8 *) SvGROW(dst, 2*slen+1); /* +1 or assertion will botch */
ab3374e4 486 while (s < e) {
cf0d1c66 487 UV uv = NATIVE_TO_UNI((UV) *s);
488 s++; /* Above expansion of NATIVE_TO_UNI() is safer this way. */
ab3374e4 489 if (UNI_IS_INVARIANT(uv))
490 *d++ = (U8)UTF_TO_NATIVE(uv);
491 else {
492 *d++ = (U8)UTF8_EIGHT_BIT_HI(uv);
493 *d++ = (U8)UTF8_EIGHT_BIT_LO(uv);
494 }
d1256cb1 495 }
ab3374e4 496 SvCUR_set(dst, d- (U8 *)SvPVX(dst));
497 *SvEND(dst) = '\0';
498 }
499
500 /* Clear out translated part of source unless asked not to */
501 if (check && !(check & ENCODE_LEAVE_SRC)){
d1256cb1 502 slen = e-s;
503 if (slen) {
504 sv_setpvn(src, (char*)s, slen);
505 }
506 SvCUR_set(src, slen);
ab3374e4 507 }
508 SvPOK_only(dst);
509 SvUTF8_off(dst);
510 ST(0) = sv_2mortal(dst);
511 XSRETURN(1);
512}
513
50d26985 514MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_
2f2b4ff2 515
516PROTOTYPES: ENABLE
517
518void
a0d8a30e 519Method_renew(obj)
520SV * obj
521CODE:
522{
523 XSRETURN(1);
524}
525
cc836e95 526int
527Method_renewed(obj)
528SV * obj
529CODE:
530 RETVAL = 0;
531OUTPUT:
532 RETVAL
533
a0d8a30e 534void
0a95303c 535Method_name(obj)
536SV * obj
537CODE:
85982a32 538{
539 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
540 ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
541 XSRETURN(1);
542}
0a95303c 543
544void
220e2d4e 545Method_cat_decode(obj, dst, src, off, term, check = 0)
546SV * obj
547SV * dst
548SV * src
549SV * off
550SV * term
551int check
552CODE:
553{
554 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
555 STRLEN offset = (STRLEN)SvIV(off);
556 int code = 0;
557 if (SvUTF8(src)) {
558 sv_utf8_downgrade(src, FALSE);
559 }
560 sv_catsv(dst, encode_method(aTHX_ enc, enc->t_utf8, src, check,
d1256cb1 561 &offset, term, &code));
b162af07 562 SvIV_set(off, (IV)offset);
220e2d4e 563 if (code == ENCODE_FOUND_TERM) {
d1256cb1 564 ST(0) = &PL_sv_yes;
220e2d4e 565 }else{
d1256cb1 566 ST(0) = &PL_sv_no;
220e2d4e 567 }
568 XSRETURN(1);
569}
570
571void
8e180e82 572Method_decode(obj,src,check_sv = &PL_sv_no)
2f2b4ff2 573SV * obj
574SV * src
8e180e82 575SV * check_sv
2f2b4ff2 576CODE:
aae85ceb 577{
8e180e82 578 int check;
85982a32 579 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
ab3374e4 580 if (SvUTF8(src)) {
581 sv_utf8_downgrade(src, FALSE);
582 }
8e180e82 583 if (SvROK(check_sv)){
d1256cb1 584 if (fallback_cb == (SV*)NULL){
8e180e82 585 fallback_cb = newSVsv(check_sv); /* First time */
586 }else{
587 SvSetSV(fallback_cb, check_sv); /* Been here before */
d1256cb1 588 }
589 check = ENCODE_PERLQQ|ENCODE_LEAVE_SRC; /* same as FB_PERLQQ */
8e180e82 590 }else{
d1256cb1 591 fallback_cb = (SV*)NULL;
592 check = SvIV(check_sv);
8e180e82 593 }
220e2d4e 594 ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check,
d1256cb1 595 NULL, Nullsv, NULL);
85982a32 596 SvUTF8_on(ST(0));
aae85ceb 597 XSRETURN(1);
598}
599
8e180e82 600
601
aae85ceb 602void
8e180e82 603Method_encode(obj,src,check_sv = &PL_sv_no)
aae85ceb 604SV * obj
85982a32 605SV * src
8e180e82 606SV * check_sv
aae85ceb 607CODE:
608{
8e180e82 609 int check;
85982a32 610 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
611 sv_utf8_upgrade(src);
8e180e82 612 if (SvROK(check_sv)){
d1256cb1 613 if (fallback_cb == (SV*)NULL){
8e180e82 614 fallback_cb = newSVsv(check_sv); /* First time */
615 }else{
616 SvSetSV(fallback_cb, check_sv); /* Been here before */
d1256cb1 617 }
618 check = ENCODE_PERLQQ|ENCODE_LEAVE_SRC; /* same as FB_PERLQQ */
8e180e82 619 }else{
d1256cb1 620 fallback_cb = (SV*)NULL;
621 check = SvIV(check_sv);
8e180e82 622 }
220e2d4e 623 ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check,
d1256cb1 624 NULL, Nullsv, NULL);
aae85ceb 625 XSRETURN(1);
626}
627
0ab8f81e 628void
629Method_needs_lines(obj)
630SV * obj
631CODE:
632{
b32afa7c 633 /* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */
0ab8f81e 634 ST(0) = &PL_sv_no;
635 XSRETURN(1);
636}
637
638void
639Method_perlio_ok(obj)
640SV * obj
641CODE:
642{
b32afa7c 643 /* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */
10c5ecbb 644 /* require_pv(PERLIO_FILENAME); */
645
646 eval_pv("require PerlIO::encoding", 0);
647
648 if (SvTRUE(get_sv("@", 0))) {
d1256cb1 649 ST(0) = &PL_sv_no;
10c5ecbb 650 }else{
d1256cb1 651 ST(0) = &PL_sv_yes;
0ab8f81e 652 }
653 XSRETURN(1);
654}
655
742555bd 656void
657Method_mime_name(obj)
658SV * obj
659CODE:
660{
661 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
662 SV *retval;
663 eval_pv("require Encode::MIME::Name", 0);
664
665 if (SvTRUE(get_sv("@", 0))) {
666 ST(0) = &PL_sv_undef;
667 }else{
668 ENTER;
669 SAVETMPS;
670 PUSHMARK(sp);
671 XPUSHs(sv_2mortal(newSVpvn(enc->name[0], strlen(enc->name[0]))));
672 PUTBACK;
673 call_pv("Encode::MIME::Name::get_mime_name", G_SCALAR);
674 SPAGAIN;
675 retval = newSVsv(POPs);
676 PUTBACK;
677 FREETMPS;
678 LEAVE;
679 /* enc->name[0] */
680 ST(0) = retval;
681 }
682 XSRETURN(1);
683}
684
67e989fb 685MODULE = Encode PACKAGE = Encode
2c674647 686
687PROTOTYPES: ENABLE
688
67e989fb 689I32
2c674647 690_bytes_to_utf8(sv, ...)
85982a32 691SV * sv
692CODE:
693{
694 SV * encoding = items == 2 ? ST(1) : Nullsv;
c6a7db43 695
85982a32 696 if (encoding)
697 RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
698 else {
d1256cb1 699 STRLEN len;
700 U8* s = (U8*)SvPV(sv, len);
701 U8* converted;
702
703 converted = bytes_to_utf8(s, &len); /* This allocs */
704 sv_setpvn(sv, (char *)converted, len);
705 SvUTF8_on(sv); /* XXX Should we? */
706 Safefree(converted); /* ... so free it */
707 RETVAL = len;
85982a32 708 }
709}
710OUTPUT:
711 RETVAL
2c674647 712
67e989fb 713I32
2c674647 714_utf8_to_bytes(sv, ...)
85982a32 715SV * sv
716CODE:
717{
718 SV * to = items > 1 ? ST(1) : Nullsv;
719 SV * check = items > 2 ? ST(2) : Nullsv;
720
721 if (to) {
d1256cb1 722 RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
85982a32 723 } else {
d1256cb1 724 STRLEN len;
725 U8 *s = (U8*)SvPV(sv, len);
85982a32 726
d1256cb1 727 RETVAL = 0;
728 if (SvTRUE(check)) {
729 /* Must do things the slow way */
730 U8 *dest;
85982a32 731 /* We need a copy to pass to check() */
2cdf8b6c 732 U8 *src = s;
d1256cb1 733 U8 *send = s + len;
2cdf8b6c 734 U8 *d0;
85982a32 735
d1256cb1 736 New(83, dest, len, U8); /* I think */
2cdf8b6c 737 d0 = dest;
85982a32 738
d1256cb1 739 while (s < send) {
85982a32 740 if (*s < 0x80){
d1256cb1 741 *dest++ = *s++;
85982a32 742 } else {
d1256cb1 743 STRLEN ulen;
744 UV uv = *s++;
745
746 /* Have to do it all ourselves because of error routine,
747 aargh. */
748 if (!(uv & 0x40)){ goto failure; }
749 if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; }
750 else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; }
751 else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; }
752 else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; }
753 else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; }
754 else if (!(uv & 0x01)) { ulen = 7; uv = 0; }
755 else { ulen = 13; uv = 0; }
756
757 /* Note change to utf8.c variable naming, for variety */
758 while (ulen--) {
759 if ((*s & 0xc0) != 0x80){
760 goto failure;
761 } else {
762 uv = (uv << 6) | (*s++ & 0x3f);
763 }
764 }
765 if (uv > 256) {
766 failure:
767 call_failure(check, s, dest, src);
768 /* Now what happens? */
769 }
770 *dest++ = (U8)uv;
771 }
772 }
2cdf8b6c 773 RETVAL = dest - d0;
774 sv_usepvn(sv, (char *)dest, RETVAL);
775 SvUTF8_off(sv);
d1256cb1 776 } else {
777 RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
778 }
85982a32 779 }
780}
781OUTPUT:
782 RETVAL
2c674647 783
2c674647 784bool
b2704119 785is_utf8(sv, check = 0)
4411f3b6 786SV * sv
b2704119 787int check
85982a32 788CODE:
789{
790 if (SvGMAGICAL(sv)) /* it could be $1, for example */
d1256cb1 791 sv = newSVsv(sv); /* GMAGIG will be done */
d1256cb1 792 RETVAL = SvUTF8(sv) ? TRUE : FALSE;
793 if (RETVAL &&
794 check &&
795 !is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
796 RETVAL = FALSE;
85982a32 797 if (sv != ST(0))
d1256cb1 798 SvREFCNT_dec(sv); /* it was a temp copy */
85982a32 799}
800OUTPUT:
801 RETVAL
2c674647 802
803SV *
4411f3b6 804_utf8_on(sv)
85982a32 805SV * sv
806CODE:
807{
808 if (SvPOK(sv)) {
d1256cb1 809 SV *rsv = newSViv(SvUTF8(sv));
810 RETVAL = rsv;
811 SvUTF8_on(sv);
85982a32 812 } else {
d1256cb1 813 RETVAL = &PL_sv_undef;
85982a32 814 }
815}
816OUTPUT:
817 RETVAL
2c674647 818
819SV *
4411f3b6 820_utf8_off(sv)
85982a32 821SV * sv
822CODE:
823{
824 if (SvPOK(sv)) {
d1256cb1 825 SV *rsv = newSViv(SvUTF8(sv));
826 RETVAL = rsv;
827 SvUTF8_off(sv);
85982a32 828 } else {
d1256cb1 829 RETVAL = &PL_sv_undef;
85982a32 830 }
831}
832OUTPUT:
833 RETVAL
834
85982a32 835int
836DIE_ON_ERR()
837CODE:
838 RETVAL = ENCODE_DIE_ON_ERR;
839OUTPUT:
840 RETVAL
841
c6a7db43 842int
85982a32 843WARN_ON_ERR()
844CODE:
845 RETVAL = ENCODE_WARN_ON_ERR;
846OUTPUT:
847 RETVAL
848
849int
850LEAVE_SRC()
851CODE:
852 RETVAL = ENCODE_LEAVE_SRC;
853OUTPUT:
854 RETVAL
855
856int
857RETURN_ON_ERR()
858CODE:
859 RETVAL = ENCODE_RETURN_ON_ERR;
860OUTPUT:
861 RETVAL
862
863int
864PERLQQ()
865CODE:
866 RETVAL = ENCODE_PERLQQ;
867OUTPUT:
868 RETVAL
869
870int
af1f55d9 871HTMLCREF()
872CODE:
873 RETVAL = ENCODE_HTMLCREF;
874OUTPUT:
875 RETVAL
876
877int
878XMLCREF()
879CODE:
880 RETVAL = ENCODE_XMLCREF;
881OUTPUT:
882 RETVAL
883
884int
56ff7374 885STOP_AT_PARTIAL()
886CODE:
887 RETVAL = ENCODE_STOP_AT_PARTIAL;
888OUTPUT:
889 RETVAL
890
891int
85982a32 892FB_DEFAULT()
893CODE:
894 RETVAL = ENCODE_FB_DEFAULT;
895OUTPUT:
896 RETVAL
897
898int
899FB_CROAK()
900CODE:
901 RETVAL = ENCODE_FB_CROAK;
902OUTPUT:
903 RETVAL
904
905int
906FB_QUIET()
907CODE:
908 RETVAL = ENCODE_FB_QUIET;
909OUTPUT:
910 RETVAL
911
912int
913FB_WARN()
914CODE:
915 RETVAL = ENCODE_FB_WARN;
916OUTPUT:
917 RETVAL
918
919int
920FB_PERLQQ()
921CODE:
922 RETVAL = ENCODE_FB_PERLQQ;
923OUTPUT:
924 RETVAL
2c674647 925
af1f55d9 926int
927FB_HTMLCREF()
928CODE:
929 RETVAL = ENCODE_FB_HTMLCREF;
930OUTPUT:
931 RETVAL
932
933int
934FB_XMLCREF()
935CODE:
936 RETVAL = ENCODE_FB_XMLCREF;
937OUTPUT:
938 RETVAL
939
33af2bc7 940BOOT:
941{
85982a32 942#include "def_t.h"
e7cbefb8 943#include "def_t.exh"
33af2bc7 944}
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