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perlunifaq, uniintro: fix for 80 col display
[p5sagit/p5-mst-13.2.git] / cpan / Encode / Encode.xs
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85982a32 1/*
b9627ca0 2 $Id: Encode.xs,v 2.18 2009/11/26 09:23:59 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
b0b300a3 38void
aa0053b7 39Encode_XSEncoding(pTHX_ encode_t * enc)
2f2b4ff2 40{
aa0053b7 41 dSP;
42 HV *stash = gv_stashpv("Encode::XS", TRUE);
43 SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash);
44 int i = 0;
45 PUSHMARK(sp);
46 XPUSHs(sv);
47 while (enc->name[i]) {
d1256cb1 48 const char *name = enc->name[i++];
49 XPUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
aa0053b7 50 }
51 PUTBACK;
52 call_pv("Encode::define_encoding", G_DISCARD);
53 SvREFCNT_dec(sv);
2f2b4ff2 54}
55
aa0053b7 56void
57call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig)
58{
85982a32 59 /* Exists for breakpointing */
aa0053b7 60}
67e989fb 61
85982a32 62
2fc614e0 63#define ERR_ENCODE_NOMAP "\"\\x{%04" UVxf "}\" does not map to %s"
64#define ERR_DECODE_NOMAP "%s \"\\x%02" UVXf "\" does not map to Unicode"
65
2f2b4ff2 66static SV *
370462a2 67do_fallback_cb(pTHX_ UV ch, SV *fallback_cb)
8e180e82 68{
69 dSP;
70 int argc;
b2deda17 71 SV *retval = newSVpv("",0);
8e180e82 72 ENTER;
73 SAVETMPS;
74 PUSHMARK(sp);
75 XPUSHs(sv_2mortal(newSVnv((UV)ch)));
76 PUTBACK;
77 argc = call_sv(fallback_cb, G_SCALAR);
78 SPAGAIN;
79 if (argc != 1){
370462a2 80 croak("fallback sub must return scalar!");
8e180e82 81 }
b2deda17 82 sv_catsv(retval, POPs);
8e180e82 83 PUTBACK;
84 FREETMPS;
85 LEAVE;
86 return retval;
87}
88
89static SV *
0629a5b3 90encode_method(pTHX_ const encode_t * enc, const encpage_t * dir, SV * src,
370462a2 91 int check, STRLEN * offset, SV * term, int * retcode,
92 SV *fallback_cb)
2f2b4ff2 93{
aa0053b7 94 STRLEN slen;
95 U8 *s = (U8 *) SvPV(src, slen);
3aececda 96 STRLEN tlen = slen;
97 STRLEN ddone = 0;
98 STRLEN sdone = 0;
39cf9a5e 99
3c49ab08 100 /* We allocate slen+1.
85982a32 101 PerlIO dumps core if this value is smaller than this. */
3c49ab08 102 SV *dst = sv_2mortal(newSV(slen+1));
85982a32 103 U8 *d = (U8 *)SvPVX(dst);
104 STRLEN dlen = SvLEN(dst)-1;
220e2d4e 105 int code = 0;
106 STRLEN trmlen = 0;
cc7dbc11 107 U8 *trm = term ? (U8*) SvPV(term, trmlen) : NULL;
220e2d4e 108
109 if (offset) {
110 s += *offset;
6be7c101 111 if (slen > *offset){ /* safeguard against slen overflow */
d1256cb1 112 slen -= *offset;
6be7c101 113 }else{
d1256cb1 114 slen = 0;
6be7c101 115 }
220e2d4e 116 tlen = slen;
117 }
85982a32 118
6be7c101 119 if (slen == 0){
d1256cb1 120 SvCUR_set(dst, 0);
121 SvPOK_only(dst);
122 goto ENCODE_END;
85982a32 123 }
124
220e2d4e 125 while( (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check,
d1256cb1 126 trm, trmlen)) )
85982a32 127 {
d1256cb1 128 SvCUR_set(dst, dlen+ddone);
129 SvPOK_only(dst);
130
131 if (code == ENCODE_FALLBACK || code == ENCODE_PARTIAL ||
132 code == ENCODE_FOUND_TERM) {
133 break;
134 }
135 switch (code) {
136 case ENCODE_NOSPACE:
137 {
138 STRLEN more = 0; /* make sure you initialize! */
139 STRLEN sleft;
140 sdone += slen;
141 ddone += dlen;
142 sleft = tlen - sdone;
fcb875d4 143#if ENCODE_XS_PROFILE >= 2
d1256cb1 144 Perl_warn(aTHX_
145 "more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n",
146 more, sdone, sleft, SvLEN(dst));
fcb875d4 147#endif
d1256cb1 148 if (sdone != 0) { /* has src ever been processed ? */
39cf9a5e 149#if ENCODE_XS_USEFP == 2
d1256cb1 150 more = (1.0*tlen*SvLEN(dst)+sdone-1)/sdone
151 - SvLEN(dst);
39cf9a5e 152#elif ENCODE_XS_USEFP
d1256cb1 153 more = (STRLEN)((1.0*SvLEN(dst)+1)/sdone * sleft);
39cf9a5e 154#else
d1256cb1 155 /* safe until SvLEN(dst) == MAX_INT/16 */
156 more = (16*SvLEN(dst)+1)/sdone/16 * sleft;
39cf9a5e 157#endif
d1256cb1 158 }
159 more += UTF8_MAXLEN; /* insurance policy */
160 d = (U8 *) SvGROW(dst, SvLEN(dst) + more);
161 /* dst need to grow need MORE bytes! */
162 if (ddone >= SvLEN(dst)) {
163 Perl_croak(aTHX_ "Destination couldn't be grown.");
164 }
165 dlen = SvLEN(dst)-ddone-1;
166 d += ddone;
167 s += slen;
168 slen = tlen-sdone;
169 continue;
170 }
171 case ENCODE_NOREP:
172 /* encoding */
173 if (dir == enc->f_utf8) {
174 STRLEN clen;
175 UV ch =
176 utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
177 &clen, UTF8_ALLOW_ANY|UTF8_CHECK_ONLY);
178 /* if non-representable multibyte prefix at end of current buffer - break*/
179 if (clen > tlen - sdone) break;
180 if (check & ENCODE_DIE_ON_ERR) {
181 Perl_croak(aTHX_ ERR_ENCODE_NOMAP,
182 (UV)ch, enc->name[0]);
183 return &PL_sv_undef; /* never reaches but be safe */
184 }
185 if (check & ENCODE_WARN_ON_ERR){
186 Perl_warner(aTHX_ packWARN(WARN_UTF8),
187 ERR_ENCODE_NOMAP, (UV)ch, enc->name[0]);
188 }
189 if (check & ENCODE_RETURN_ON_ERR){
190 goto ENCODE_SET_SRC;
191 }
192 if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
193 SV* subchar =
370462a2 194 (fallback_cb != &PL_sv_undef)
195 ? do_fallback_cb(aTHX_ ch, fallback_cb)
196 : newSVpvf(check & ENCODE_PERLQQ ? "\\x{%04"UVxf"}" :
d1256cb1 197 check & ENCODE_HTMLCREF ? "&#%" UVuf ";" :
198 "&#x%" UVxf ";", (UV)ch);
b2deda17 199 SvUTF8_off(subchar); /* make sure no decoded string gets in */
d1256cb1 200 sdone += slen + clen;
201 ddone += dlen + SvCUR(subchar);
202 sv_catsv(dst, subchar);
203 SvREFCNT_dec(subchar);
204 } else {
205 /* fallback char */
206 sdone += slen + clen;
207 ddone += dlen + enc->replen;
208 sv_catpvn(dst, (char*)enc->rep, enc->replen);
209 }
210 }
211 /* decoding */
212 else {
213 if (check & ENCODE_DIE_ON_ERR){
214 Perl_croak(aTHX_ ERR_DECODE_NOMAP,
436c6dd3 215 enc->name[0], (UV)s[slen]);
d1256cb1 216 return &PL_sv_undef; /* never reaches but be safe */
217 }
218 if (check & ENCODE_WARN_ON_ERR){
219 Perl_warner(
220 aTHX_ packWARN(WARN_UTF8),
221 ERR_DECODE_NOMAP,
436c6dd3 222 enc->name[0], (UV)s[slen]);
d1256cb1 223 }
224 if (check & ENCODE_RETURN_ON_ERR){
225 goto ENCODE_SET_SRC;
226 }
227 if (check &
228 (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
229 SV* subchar =
370462a2 230 (fallback_cb != &PL_sv_undef)
231 ? do_fallback_cb(aTHX_ (UV)s[slen], fallback_cb)
232 : newSVpvf("\\x%02" UVXf, (UV)s[slen]);
d1256cb1 233 sdone += slen + 1;
234 ddone += dlen + SvCUR(subchar);
235 sv_catsv(dst, subchar);
236 SvREFCNT_dec(subchar);
237 } else {
238 sdone += slen + 1;
239 ddone += dlen + strlen(FBCHAR_UTF8);
240 sv_catpv(dst, FBCHAR_UTF8);
241 }
242 }
243 /* settle variables when fallback */
244 d = (U8 *)SvEND(dst);
b0b300a3 245 dlen = SvLEN(dst) - ddone - 1;
d1256cb1 246 s = (U8*)SvPVX(src) + sdone;
247 slen = tlen - sdone;
248 break;
249
250 default:
251 Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
252 code, (dir == enc->f_utf8) ? "to" : "from",
253 enc->name[0]);
254 return &PL_sv_undef;
255 }
85982a32 256 }
257 ENCODE_SET_SRC:
ca777f1c 258 if (check && !(check & ENCODE_LEAVE_SRC)){
d1256cb1 259 sdone = SvCUR(src) - (slen+sdone);
260 if (sdone) {
261 sv_setpvn(src, (char*)s+slen, sdone);
262 }
263 SvCUR_set(src, sdone);
2f2b4ff2 264 }
85982a32 265 /* warn("check = 0x%X, code = 0x%d\n", check, code); */
c6a7db43 266
85982a32 267 SvCUR_set(dst, dlen+ddone);
268 SvPOK_only(dst);
c6a7db43 269
39cf9a5e 270#if ENCODE_XS_PROFILE
271 if (SvCUR(dst) > SvCUR(src)){
d1256cb1 272 Perl_warn(aTHX_
273 "SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
274 SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
275 (SvLEN(dst) - SvCUR(dst))*1.0/SvLEN(dst)*100.0);
39cf9a5e 276 }
3c49ab08 277#endif
c6a7db43 278
220e2d4e 279 if (offset)
280 *offset += sdone + slen;
281
85982a32 282 ENCODE_END:
0b3236bb 283 *SvEND(dst) = '\0';
220e2d4e 284 if (retcode) *retcode = code;
aa0053b7 285 return dst;
2f2b4ff2 286}
287
7f0d54d7 288static bool
289strict_utf8(pTHX_ SV* sv)
290{
291 HV* hv;
292 SV** svp;
293 sv = SvRV(sv);
294 if (!sv || SvTYPE(sv) != SVt_PVHV)
295 return 0;
296 hv = (HV*)sv;
297 svp = hv_fetch(hv, "strict_utf8", 11, 0);
298 if (!svp)
299 return 0;
300 return SvTRUE(*svp);
301}
302
303static U8*
b9627ca0 304process_utf8(pTHX_ SV* dst, U8* s, U8* e, SV *check_sv,
7f0d54d7 305 bool encode, bool strict, bool stop_at_partial)
306{
307 UV uv;
308 STRLEN ulen;
b9627ca0 309 SV *fallback_cb;
310 int check;
311
312 if (SvROK(check_sv)) {
313 /* croak("UTF-8 decoder doesn't support callback CHECK"); */
314 fallback_cb = check_sv;
315 check = ENCODE_PERLQQ|ENCODE_LEAVE_SRC; /* same as perlqq */
316 }
317 else {
318 fallback_cb = &PL_sv_undef;
319 check = SvIV(check_sv);
320 }
7f0d54d7 321
322 SvPOK_only(dst);
323 SvCUR_set(dst,0);
324
325 while (s < e) {
326 if (UTF8_IS_INVARIANT(*s)) {
327 sv_catpvn(dst, (char *)s, 1);
328 s++;
329 continue;
330 }
331
332 if (UTF8_IS_START(*s)) {
333 U8 skip = UTF8SKIP(s);
334 if ((s + skip) > e) {
335 /* Partial character */
336 /* XXX could check that rest of bytes are UTF8_IS_CONTINUATION(ch) */
56ff7374 337 if (stop_at_partial || (check & ENCODE_STOP_AT_PARTIAL))
7f0d54d7 338 break;
339
340 goto malformed_byte;
341 }
342
343 uv = utf8n_to_uvuni(s, e - s, &ulen,
344 UTF8_CHECK_ONLY | (strict ? UTF8_ALLOW_STRICT :
345 UTF8_ALLOW_NONSTRICT)
346 );
347#if 1 /* perl-5.8.6 and older do not check UTF8_ALLOW_LONG */
d1256cb1 348 if (strict && uv > PERL_UNICODE_MAX)
1b9a72a9 349 ulen = (STRLEN) -1;
7f0d54d7 350#endif
351 if (ulen == -1) {
352 if (strict) {
353 uv = utf8n_to_uvuni(s, e - s, &ulen,
354 UTF8_CHECK_ONLY | UTF8_ALLOW_NONSTRICT);
355 if (ulen == -1)
356 goto malformed_byte;
357 goto malformed;
358 }
359 goto malformed_byte;
360 }
361
362
363 /* Whole char is good */
364 sv_catpvn(dst,(char *)s,skip);
365 s += skip;
366 continue;
367 }
368
369 /* If we get here there is something wrong with alleged UTF-8 */
370 malformed_byte:
371 uv = (UV)*s;
372 ulen = 1;
373
374 malformed:
375 if (check & ENCODE_DIE_ON_ERR){
376 if (encode)
377 Perl_croak(aTHX_ ERR_ENCODE_NOMAP, uv, "utf8");
378 else
379 Perl_croak(aTHX_ ERR_DECODE_NOMAP, "utf8", uv);
380 }
381 if (check & ENCODE_WARN_ON_ERR){
382 if (encode)
383 Perl_warner(aTHX_ packWARN(WARN_UTF8),
384 ERR_ENCODE_NOMAP, uv, "utf8");
385 else
386 Perl_warner(aTHX_ packWARN(WARN_UTF8),
387 ERR_DECODE_NOMAP, "utf8", uv);
388 }
389 if (check & ENCODE_RETURN_ON_ERR) {
390 break;
391 }
392 if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
b9627ca0 393 SV* subchar =
394 (fallback_cb != &PL_sv_undef)
395 ? do_fallback_cb(aTHX_ uv, fallback_cb)
396 : newSVpvf(check & ENCODE_PERLQQ
397 ? (ulen == 1 ? "\\x%02" UVXf : "\\x{%04" UVXf "}")
398 : check & ENCODE_HTMLCREF ? "&#%" UVuf ";"
399 : "&#x%" UVxf ";", uv);
400 if (encode){
401 SvUTF8_off(subchar); /* make sure no decoded string gets in */
402 }
7f0d54d7 403 sv_catsv(dst, subchar);
404 SvREFCNT_dec(subchar);
405 } else {
406 sv_catpv(dst, FBCHAR_UTF8);
407 }
408 s += ulen;
409 }
410 *SvEND(dst) = '\0';
411
412 return s;
413}
414
415
ab3374e4 416MODULE = Encode PACKAGE = Encode::utf8 PREFIX = Method_
417
a0d8a30e 418PROTOTYPES: DISABLE
419
420void
b2deda17 421Method_decode_xs(obj,src,check_sv = &PL_sv_no)
ab3374e4 422SV * obj
423SV * src
b2deda17 424SV * check_sv
e83d9f5f 425PREINIT:
426 STRLEN slen;
427 U8 *s;
428 U8 *e;
429 SV *dst;
430 bool renewed = 0;
b2deda17 431 int check;
ab3374e4 432CODE:
433{
e83d9f5f 434 dSP; ENTER; SAVETMPS;
435 if (src == &PL_sv_undef) src = newSV(0);
436 s = (U8 *) SvPV(src, slen);
437 e = (U8 *) SvEND(src);
438 dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */
b9627ca0 439 check = SvROK(check_sv) ? ENCODE_PERLQQ|ENCODE_LEAVE_SRC : SvIV(check_sv);
cc836e95 440 /*
7f0d54d7 441 * PerlIO check -- we assume the object is of PerlIO if renewed
cc836e95 442 */
cc836e95 443 PUSHMARK(sp);
444 XPUSHs(obj);
445 PUTBACK;
446 if (call_method("renewed",G_SCALAR) == 1) {
d1256cb1 447 SPAGAIN;
448 renewed = (bool)POPi;
449 PUTBACK;
cc836e95 450#if 0
d1256cb1 451 fprintf(stderr, "renewed == %d\n", renewed);
cc836e95 452#endif
cc836e95 453 }
454 FREETMPS; LEAVE;
455 /* end PerlIO check */
456
ab3374e4 457 if (SvUTF8(src)) {
d1256cb1 458 s = utf8_to_bytes(s,&slen);
459 if (s) {
460 SvCUR_set(src,slen);
461 SvUTF8_off(src);
462 e = s+slen;
463 }
464 else {
465 croak("Cannot decode string with wide characters");
466 }
ab3374e4 467 }
7f0d54d7 468
b9627ca0 469 s = process_utf8(aTHX_ dst, s, e, check_sv, 0, strict_utf8(aTHX_ obj), renewed);
ab3374e4 470
471 /* Clear out translated part of source unless asked not to */
472 if (check && !(check & ENCODE_LEAVE_SRC)){
d1256cb1 473 slen = e-s;
474 if (slen) {
475 sv_setpvn(src, (char*)s, slen);
476 }
477 SvCUR_set(src, slen);
ab3374e4 478 }
479 SvUTF8_on(dst);
480 ST(0) = sv_2mortal(dst);
481 XSRETURN(1);
482}
483
484void
b2deda17 485Method_encode_xs(obj,src,check_sv = &PL_sv_no)
ab3374e4 486SV * obj
487SV * src
b2deda17 488SV * check_sv
e83d9f5f 489PREINIT:
490 STRLEN slen;
491 U8 *s;
492 U8 *e;
493 SV *dst;
494 bool renewed = 0;
b2deda17 495 int check;
ab3374e4 496CODE:
497{
b9627ca0 498 check = SvROK(check_sv) ? ENCODE_PERLQQ|ENCODE_LEAVE_SRC : SvIV(check_sv);
e83d9f5f 499 if (src == &PL_sv_undef) src = newSV(0);
500 s = (U8 *) SvPV(src, slen);
501 e = (U8 *) SvEND(src);
502 dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */
ab3374e4 503 if (SvUTF8(src)) {
d1256cb1 504 /* Already encoded */
505 if (strict_utf8(aTHX_ obj)) {
b9627ca0 506 s = process_utf8(aTHX_ dst, s, e, check_sv, 1, 1, 0);
d1256cb1 507 }
7f0d54d7 508 else {
509 /* trust it and just copy the octets */
510 sv_setpvn(dst,(char *)s,(e-s));
d1256cb1 511 s = e;
7f0d54d7 512 }
ab3374e4 513 }
514 else {
515 /* Native bytes - can always encode */
d1256cb1 516 U8 *d = (U8 *) SvGROW(dst, 2*slen+1); /* +1 or assertion will botch */
ab3374e4 517 while (s < e) {
cf0d1c66 518 UV uv = NATIVE_TO_UNI((UV) *s);
519 s++; /* Above expansion of NATIVE_TO_UNI() is safer this way. */
ab3374e4 520 if (UNI_IS_INVARIANT(uv))
521 *d++ = (U8)UTF_TO_NATIVE(uv);
522 else {
523 *d++ = (U8)UTF8_EIGHT_BIT_HI(uv);
524 *d++ = (U8)UTF8_EIGHT_BIT_LO(uv);
525 }
d1256cb1 526 }
ab3374e4 527 SvCUR_set(dst, d- (U8 *)SvPVX(dst));
528 *SvEND(dst) = '\0';
529 }
530
531 /* Clear out translated part of source unless asked not to */
532 if (check && !(check & ENCODE_LEAVE_SRC)){
d1256cb1 533 slen = e-s;
534 if (slen) {
535 sv_setpvn(src, (char*)s, slen);
536 }
537 SvCUR_set(src, slen);
ab3374e4 538 }
539 SvPOK_only(dst);
540 SvUTF8_off(dst);
541 ST(0) = sv_2mortal(dst);
542 XSRETURN(1);
543}
544
50d26985 545MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_
2f2b4ff2 546
547PROTOTYPES: ENABLE
548
549void
a0d8a30e 550Method_renew(obj)
551SV * obj
552CODE:
553{
554 XSRETURN(1);
555}
556
cc836e95 557int
558Method_renewed(obj)
559SV * obj
560CODE:
561 RETVAL = 0;
562OUTPUT:
563 RETVAL
564
a0d8a30e 565void
0a95303c 566Method_name(obj)
567SV * obj
568CODE:
85982a32 569{
570 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
571 ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
572 XSRETURN(1);
573}
0a95303c 574
575void
370462a2 576Method_cat_decode(obj, dst, src, off, term, check_sv = &PL_sv_no)
220e2d4e 577SV * obj
578SV * dst
579SV * src
580SV * off
581SV * term
370462a2 582SV * check_sv
220e2d4e 583CODE:
584{
370462a2 585 int check;
586 SV *fallback_cb = &PL_sv_undef;
220e2d4e 587 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
588 STRLEN offset = (STRLEN)SvIV(off);
589 int code = 0;
590 if (SvUTF8(src)) {
591 sv_utf8_downgrade(src, FALSE);
592 }
370462a2 593 if (SvROK(check_sv)){
594 fallback_cb = check_sv;
595 check = ENCODE_PERLQQ|ENCODE_LEAVE_SRC; /* same as FB_PERLQQ */
596 }else{
597 check = SvIV(check_sv);
598 }
220e2d4e 599 sv_catsv(dst, encode_method(aTHX_ enc, enc->t_utf8, src, check,
370462a2 600 &offset, term, &code, fallback_cb));
b162af07 601 SvIV_set(off, (IV)offset);
220e2d4e 602 if (code == ENCODE_FOUND_TERM) {
d1256cb1 603 ST(0) = &PL_sv_yes;
220e2d4e 604 }else{
d1256cb1 605 ST(0) = &PL_sv_no;
220e2d4e 606 }
607 XSRETURN(1);
608}
609
610void
8e180e82 611Method_decode(obj,src,check_sv = &PL_sv_no)
2f2b4ff2 612SV * obj
613SV * src
8e180e82 614SV * check_sv
2f2b4ff2 615CODE:
aae85ceb 616{
8e180e82 617 int check;
370462a2 618 SV *fallback_cb = &PL_sv_undef;
85982a32 619 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
ab3374e4 620 if (SvUTF8(src)) {
621 sv_utf8_downgrade(src, FALSE);
622 }
8e180e82 623 if (SvROK(check_sv)){
370462a2 624 fallback_cb = check_sv;
625 check = ENCODE_PERLQQ|ENCODE_LEAVE_SRC; /* same as FB_PERLQQ */
8e180e82 626 }else{
370462a2 627 check = SvIV(check_sv);
8e180e82 628 }
220e2d4e 629 ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check,
370462a2 630 NULL, Nullsv, NULL, fallback_cb);
85982a32 631 SvUTF8_on(ST(0));
aae85ceb 632 XSRETURN(1);
633}
634
635void
8e180e82 636Method_encode(obj,src,check_sv = &PL_sv_no)
aae85ceb 637SV * obj
85982a32 638SV * src
8e180e82 639SV * check_sv
aae85ceb 640CODE:
641{
8e180e82 642 int check;
370462a2 643 SV *fallback_cb = &PL_sv_undef;
85982a32 644 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
645 sv_utf8_upgrade(src);
8e180e82 646 if (SvROK(check_sv)){
370462a2 647 fallback_cb = check_sv;
648 check = ENCODE_PERLQQ|ENCODE_LEAVE_SRC; /* same as FB_PERLQQ */
8e180e82 649 }else{
370462a2 650 check = SvIV(check_sv);
8e180e82 651 }
220e2d4e 652 ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check,
370462a2 653 NULL, Nullsv, NULL, fallback_cb);
aae85ceb 654 XSRETURN(1);
655}
656
0ab8f81e 657void
658Method_needs_lines(obj)
659SV * obj
660CODE:
661{
b32afa7c 662 /* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */
0ab8f81e 663 ST(0) = &PL_sv_no;
664 XSRETURN(1);
665}
666
667void
668Method_perlio_ok(obj)
669SV * obj
670CODE:
671{
b32afa7c 672 /* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */
10c5ecbb 673 /* require_pv(PERLIO_FILENAME); */
674
675 eval_pv("require PerlIO::encoding", 0);
676
677 if (SvTRUE(get_sv("@", 0))) {
d1256cb1 678 ST(0) = &PL_sv_no;
10c5ecbb 679 }else{
d1256cb1 680 ST(0) = &PL_sv_yes;
0ab8f81e 681 }
682 XSRETURN(1);
683}
684
742555bd 685void
686Method_mime_name(obj)
687SV * obj
688CODE:
689{
690 encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
691 SV *retval;
692 eval_pv("require Encode::MIME::Name", 0);
693
694 if (SvTRUE(get_sv("@", 0))) {
695 ST(0) = &PL_sv_undef;
696 }else{
697 ENTER;
698 SAVETMPS;
699 PUSHMARK(sp);
700 XPUSHs(sv_2mortal(newSVpvn(enc->name[0], strlen(enc->name[0]))));
701 PUTBACK;
702 call_pv("Encode::MIME::Name::get_mime_name", G_SCALAR);
703 SPAGAIN;
704 retval = newSVsv(POPs);
705 PUTBACK;
706 FREETMPS;
707 LEAVE;
708 /* enc->name[0] */
709 ST(0) = retval;
710 }
711 XSRETURN(1);
712}
713
67e989fb 714MODULE = Encode PACKAGE = Encode
2c674647 715
716PROTOTYPES: ENABLE
717
67e989fb 718I32
2c674647 719_bytes_to_utf8(sv, ...)
85982a32 720SV * sv
721CODE:
722{
723 SV * encoding = items == 2 ? ST(1) : Nullsv;
c6a7db43 724
85982a32 725 if (encoding)
726 RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
727 else {
d1256cb1 728 STRLEN len;
729 U8* s = (U8*)SvPV(sv, len);
730 U8* converted;
731
732 converted = bytes_to_utf8(s, &len); /* This allocs */
733 sv_setpvn(sv, (char *)converted, len);
734 SvUTF8_on(sv); /* XXX Should we? */
735 Safefree(converted); /* ... so free it */
736 RETVAL = len;
85982a32 737 }
738}
739OUTPUT:
740 RETVAL
2c674647 741
67e989fb 742I32
2c674647 743_utf8_to_bytes(sv, ...)
85982a32 744SV * sv
745CODE:
746{
747 SV * to = items > 1 ? ST(1) : Nullsv;
748 SV * check = items > 2 ? ST(2) : Nullsv;
749
750 if (to) {
d1256cb1 751 RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
85982a32 752 } else {
d1256cb1 753 STRLEN len;
754 U8 *s = (U8*)SvPV(sv, len);
85982a32 755
d1256cb1 756 RETVAL = 0;
757 if (SvTRUE(check)) {
758 /* Must do things the slow way */
759 U8 *dest;
85982a32 760 /* We need a copy to pass to check() */
2cdf8b6c 761 U8 *src = s;
d1256cb1 762 U8 *send = s + len;
2cdf8b6c 763 U8 *d0;
85982a32 764
d1256cb1 765 New(83, dest, len, U8); /* I think */
2cdf8b6c 766 d0 = dest;
85982a32 767
d1256cb1 768 while (s < send) {
85982a32 769 if (*s < 0x80){
d1256cb1 770 *dest++ = *s++;
85982a32 771 } else {
d1256cb1 772 STRLEN ulen;
773 UV uv = *s++;
774
775 /* Have to do it all ourselves because of error routine,
776 aargh. */
777 if (!(uv & 0x40)){ goto failure; }
778 if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; }
779 else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; }
780 else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; }
781 else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; }
782 else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; }
783 else if (!(uv & 0x01)) { ulen = 7; uv = 0; }
784 else { ulen = 13; uv = 0; }
785
786 /* Note change to utf8.c variable naming, for variety */
787 while (ulen--) {
788 if ((*s & 0xc0) != 0x80){
789 goto failure;
790 } else {
791 uv = (uv << 6) | (*s++ & 0x3f);
792 }
793 }
794 if (uv > 256) {
795 failure:
796 call_failure(check, s, dest, src);
797 /* Now what happens? */
798 }
799 *dest++ = (U8)uv;
800 }
801 }
2cdf8b6c 802 RETVAL = dest - d0;
803 sv_usepvn(sv, (char *)dest, RETVAL);
804 SvUTF8_off(sv);
d1256cb1 805 } else {
806 RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
807 }
85982a32 808 }
809}
810OUTPUT:
811 RETVAL
2c674647 812
2c674647 813bool
b2704119 814is_utf8(sv, check = 0)
4411f3b6 815SV * sv
b2704119 816int check
85982a32 817CODE:
818{
819 if (SvGMAGICAL(sv)) /* it could be $1, for example */
d1256cb1 820 sv = newSVsv(sv); /* GMAGIG will be done */
d1256cb1 821 RETVAL = SvUTF8(sv) ? TRUE : FALSE;
822 if (RETVAL &&
823 check &&
824 !is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
825 RETVAL = FALSE;
85982a32 826 if (sv != ST(0))
d1256cb1 827 SvREFCNT_dec(sv); /* it was a temp copy */
85982a32 828}
829OUTPUT:
830 RETVAL
2c674647 831
832SV *
4411f3b6 833_utf8_on(sv)
85982a32 834SV * sv
835CODE:
836{
837 if (SvPOK(sv)) {
d1256cb1 838 SV *rsv = newSViv(SvUTF8(sv));
839 RETVAL = rsv;
840 SvUTF8_on(sv);
85982a32 841 } else {
d1256cb1 842 RETVAL = &PL_sv_undef;
85982a32 843 }
844}
845OUTPUT:
846 RETVAL
2c674647 847
848SV *
4411f3b6 849_utf8_off(sv)
85982a32 850SV * sv
851CODE:
852{
853 if (SvPOK(sv)) {
d1256cb1 854 SV *rsv = newSViv(SvUTF8(sv));
855 RETVAL = rsv;
856 SvUTF8_off(sv);
85982a32 857 } else {
d1256cb1 858 RETVAL = &PL_sv_undef;
85982a32 859 }
860}
861OUTPUT:
862 RETVAL
863
85982a32 864int
865DIE_ON_ERR()
866CODE:
867 RETVAL = ENCODE_DIE_ON_ERR;
868OUTPUT:
869 RETVAL
870
c6a7db43 871int
85982a32 872WARN_ON_ERR()
873CODE:
874 RETVAL = ENCODE_WARN_ON_ERR;
875OUTPUT:
876 RETVAL
877
878int
879LEAVE_SRC()
880CODE:
881 RETVAL = ENCODE_LEAVE_SRC;
882OUTPUT:
883 RETVAL
884
885int
886RETURN_ON_ERR()
887CODE:
888 RETVAL = ENCODE_RETURN_ON_ERR;
889OUTPUT:
890 RETVAL
891
892int
893PERLQQ()
894CODE:
895 RETVAL = ENCODE_PERLQQ;
896OUTPUT:
897 RETVAL
898
899int
af1f55d9 900HTMLCREF()
901CODE:
902 RETVAL = ENCODE_HTMLCREF;
903OUTPUT:
904 RETVAL
905
906int
907XMLCREF()
908CODE:
909 RETVAL = ENCODE_XMLCREF;
910OUTPUT:
911 RETVAL
912
913int
56ff7374 914STOP_AT_PARTIAL()
915CODE:
916 RETVAL = ENCODE_STOP_AT_PARTIAL;
917OUTPUT:
918 RETVAL
919
920int
85982a32 921FB_DEFAULT()
922CODE:
923 RETVAL = ENCODE_FB_DEFAULT;
924OUTPUT:
925 RETVAL
926
927int
928FB_CROAK()
929CODE:
930 RETVAL = ENCODE_FB_CROAK;
931OUTPUT:
932 RETVAL
933
934int
935FB_QUIET()
936CODE:
937 RETVAL = ENCODE_FB_QUIET;
938OUTPUT:
939 RETVAL
940
941int
942FB_WARN()
943CODE:
944 RETVAL = ENCODE_FB_WARN;
945OUTPUT:
946 RETVAL
947
948int
949FB_PERLQQ()
950CODE:
951 RETVAL = ENCODE_FB_PERLQQ;
952OUTPUT:
953 RETVAL
2c674647 954
af1f55d9 955int
956FB_HTMLCREF()
957CODE:
958 RETVAL = ENCODE_FB_HTMLCREF;
959OUTPUT:
960 RETVAL
961
962int
963FB_XMLCREF()
964CODE:
965 RETVAL = ENCODE_FB_XMLCREF;
966OUTPUT:
967 RETVAL
968
33af2bc7 969BOOT:
970{
85982a32 971#include "def_t.h"
e7cbefb8 972#include "def_t.exh"
33af2bc7 973}
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