| 1 | /* |
| 2 | $Id: Encode.xs,v 2.0 2004/05/16 20:55:15 dankogai Exp $ |
| 3 | */ |
| 4 | |
| 5 | #define PERL_NO_GET_CONTEXT |
| 6 | #include "EXTERN.h" |
| 7 | #include "perl.h" |
| 8 | #include "XSUB.h" |
| 9 | #define U8 U8 |
| 10 | #include "encode.h" |
| 11 | |
| 12 | # define PERLIO_MODNAME "PerlIO::encoding" |
| 13 | # define PERLIO_FILENAME "PerlIO/encoding.pm" |
| 14 | |
| 15 | /* set 1 or more to profile. t/encoding.t dumps core because of |
| 16 | Perl_warner and PerlIO don't work well */ |
| 17 | #define ENCODE_XS_PROFILE 0 |
| 18 | |
| 19 | /* set 0 to disable floating point to calculate buffer size for |
| 20 | encode_method(). 1 is recommended. 2 restores NI-S original */ |
| 21 | #define ENCODE_XS_USEFP 1 |
| 22 | |
| 23 | #define UNIMPLEMENTED(x,y) y x (SV *sv, char *encoding) {dTHX; \ |
| 24 | Perl_croak(aTHX_ "panic_unimplemented"); \ |
| 25 | return (y)0; /* fool picky compilers */ \ |
| 26 | } |
| 27 | /**/ |
| 28 | |
| 29 | UNIMPLEMENTED(_encoded_utf8_to_bytes, I32) |
| 30 | UNIMPLEMENTED(_encoded_bytes_to_utf8, I32) |
| 31 | |
| 32 | void |
| 33 | Encode_XSEncoding(pTHX_ encode_t * enc) |
| 34 | { |
| 35 | dSP; |
| 36 | HV *stash = gv_stashpv("Encode::XS", TRUE); |
| 37 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash); |
| 38 | int i = 0; |
| 39 | PUSHMARK(sp); |
| 40 | XPUSHs(sv); |
| 41 | while (enc->name[i]) { |
| 42 | const char *name = enc->name[i++]; |
| 43 | XPUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
| 44 | } |
| 45 | PUTBACK; |
| 46 | call_pv("Encode::define_encoding", G_DISCARD); |
| 47 | SvREFCNT_dec(sv); |
| 48 | } |
| 49 | |
| 50 | void |
| 51 | call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig) |
| 52 | { |
| 53 | /* Exists for breakpointing */ |
| 54 | } |
| 55 | |
| 56 | |
| 57 | #define ERR_ENCODE_NOMAP "\"\\x{%04" UVxf "}\" does not map to %s" |
| 58 | #define ERR_DECODE_NOMAP "%s \"\\x%02" UVXf "\" does not map to Unicode" |
| 59 | |
| 60 | static SV * |
| 61 | encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src, |
| 62 | int check, STRLEN * offset, SV * term, int * retcode) |
| 63 | { |
| 64 | STRLEN slen; |
| 65 | U8 *s = (U8 *) SvPV(src, slen); |
| 66 | STRLEN tlen = slen; |
| 67 | STRLEN ddone = 0; |
| 68 | STRLEN sdone = 0; |
| 69 | |
| 70 | /* We allocate slen+1. |
| 71 | PerlIO dumps core if this value is smaller than this. */ |
| 72 | SV *dst = sv_2mortal(newSV(slen+1)); |
| 73 | U8 *d = (U8 *)SvPVX(dst); |
| 74 | STRLEN dlen = SvLEN(dst)-1; |
| 75 | int code = 0; |
| 76 | STRLEN trmlen = 0; |
| 77 | U8 *trm = term ? (U8*) SvPV(term, trmlen) : NULL; |
| 78 | |
| 79 | if (offset) { |
| 80 | s += *offset; |
| 81 | if (slen > *offset){ /* safeguard against slen overflow */ |
| 82 | slen -= *offset; |
| 83 | }else{ |
| 84 | slen = 0; |
| 85 | } |
| 86 | tlen = slen; |
| 87 | } |
| 88 | |
| 89 | if (slen == 0){ |
| 90 | SvCUR_set(dst, 0); |
| 91 | SvPOK_only(dst); |
| 92 | goto ENCODE_END; |
| 93 | } |
| 94 | |
| 95 | while( (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check, |
| 96 | trm, trmlen)) ) |
| 97 | { |
| 98 | SvCUR_set(dst, dlen+ddone); |
| 99 | SvPOK_only(dst); |
| 100 | |
| 101 | if (code == ENCODE_FALLBACK || code == ENCODE_PARTIAL || |
| 102 | code == ENCODE_FOUND_TERM) { |
| 103 | break; |
| 104 | } |
| 105 | switch (code) { |
| 106 | case ENCODE_NOSPACE: |
| 107 | { |
| 108 | STRLEN more = 0; /* make sure you initialize! */ |
| 109 | STRLEN sleft; |
| 110 | sdone += slen; |
| 111 | ddone += dlen; |
| 112 | sleft = tlen - sdone; |
| 113 | #if ENCODE_XS_PROFILE >= 2 |
| 114 | Perl_warn(aTHX_ |
| 115 | "more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n", |
| 116 | more, sdone, sleft, SvLEN(dst)); |
| 117 | #endif |
| 118 | if (sdone != 0) { /* has src ever been processed ? */ |
| 119 | #if ENCODE_XS_USEFP == 2 |
| 120 | more = (1.0*tlen*SvLEN(dst)+sdone-1)/sdone |
| 121 | - SvLEN(dst); |
| 122 | #elif ENCODE_XS_USEFP |
| 123 | more = (STRLEN)((1.0*SvLEN(dst)+1)/sdone * sleft); |
| 124 | #else |
| 125 | /* safe until SvLEN(dst) == MAX_INT/16 */ |
| 126 | more = (16*SvLEN(dst)+1)/sdone/16 * sleft; |
| 127 | #endif |
| 128 | } |
| 129 | more += UTF8_MAXLEN; /* insurance policy */ |
| 130 | d = (U8 *) SvGROW(dst, SvLEN(dst) + more); |
| 131 | /* dst need to grow need MORE bytes! */ |
| 132 | if (ddone >= SvLEN(dst)) { |
| 133 | Perl_croak(aTHX_ "Destination couldn't be grown."); |
| 134 | } |
| 135 | dlen = SvLEN(dst)-ddone-1; |
| 136 | d += ddone; |
| 137 | s += slen; |
| 138 | slen = tlen-sdone; |
| 139 | continue; |
| 140 | } |
| 141 | case ENCODE_NOREP: |
| 142 | /* encoding */ |
| 143 | if (dir == enc->f_utf8) { |
| 144 | STRLEN clen; |
| 145 | UV ch = |
| 146 | utf8n_to_uvuni(s+slen, (SvCUR(src)-slen), |
| 147 | &clen, UTF8_ALLOW_ANY|UTF8_CHECK_ONLY); |
| 148 | if (check & ENCODE_DIE_ON_ERR) { |
| 149 | Perl_croak(aTHX_ ERR_ENCODE_NOMAP, |
| 150 | (UV)ch, enc->name[0]); |
| 151 | return &PL_sv_undef; /* never reaches but be safe */ |
| 152 | } |
| 153 | if (check & ENCODE_WARN_ON_ERR){ |
| 154 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
| 155 | ERR_ENCODE_NOMAP, (UV)ch, enc->name[0]); |
| 156 | } |
| 157 | if (check & ENCODE_RETURN_ON_ERR){ |
| 158 | goto ENCODE_SET_SRC; |
| 159 | } |
| 160 | if (check & ENCODE_PERLQQ){ |
| 161 | SV* perlqq = |
| 162 | sv_2mortal(newSVpvf("\\x{%04"UVxf"}", (UV)ch)); |
| 163 | sdone += slen + clen; |
| 164 | ddone += dlen + SvCUR(perlqq); |
| 165 | sv_catsv(dst, perlqq); |
| 166 | }else if (check & ENCODE_HTMLCREF){ |
| 167 | SV* htmlcref = |
| 168 | sv_2mortal(newSVpvf("&#%" UVuf ";", (UV)ch)); |
| 169 | sdone += slen + clen; |
| 170 | ddone += dlen + SvCUR(htmlcref); |
| 171 | sv_catsv(dst, htmlcref); |
| 172 | }else if (check & ENCODE_XMLCREF){ |
| 173 | SV* xmlcref = |
| 174 | sv_2mortal(newSVpvf("&#x%" UVxf ";", (UV)ch)); |
| 175 | sdone += slen + clen; |
| 176 | ddone += dlen + SvCUR(xmlcref); |
| 177 | sv_catsv(dst, xmlcref); |
| 178 | } else { |
| 179 | /* fallback char */ |
| 180 | sdone += slen + clen; |
| 181 | ddone += dlen + enc->replen; |
| 182 | sv_catpvn(dst, (char*)enc->rep, enc->replen); |
| 183 | } |
| 184 | } |
| 185 | /* decoding */ |
| 186 | else { |
| 187 | if (check & ENCODE_DIE_ON_ERR){ |
| 188 | Perl_croak(aTHX_ ERR_DECODE_NOMAP, |
| 189 | enc->name[0], (UV)s[slen]); |
| 190 | return &PL_sv_undef; /* never reaches but be safe */ |
| 191 | } |
| 192 | if (check & ENCODE_WARN_ON_ERR){ |
| 193 | Perl_warner( |
| 194 | aTHX_ packWARN(WARN_UTF8), |
| 195 | ERR_DECODE_NOMAP, |
| 196 | enc->name[0], (UV)s[slen]); |
| 197 | } |
| 198 | if (check & ENCODE_RETURN_ON_ERR){ |
| 199 | goto ENCODE_SET_SRC; |
| 200 | } |
| 201 | if (check & |
| 202 | (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){ |
| 203 | SV* perlqq = |
| 204 | sv_2mortal(newSVpvf("\\x%02" UVXf, (UV)s[slen])); |
| 205 | sdone += slen + 1; |
| 206 | ddone += dlen + SvCUR(perlqq); |
| 207 | sv_catsv(dst, perlqq); |
| 208 | } else { |
| 209 | sdone += slen + 1; |
| 210 | ddone += dlen + strlen(FBCHAR_UTF8); |
| 211 | sv_catpv(dst, FBCHAR_UTF8); |
| 212 | } |
| 213 | } |
| 214 | /* settle variables when fallback */ |
| 215 | d = (U8 *)SvEND(dst); |
| 216 | dlen = SvLEN(dst) - ddone - 1; |
| 217 | s = (U8*)SvPVX(src) + sdone; |
| 218 | slen = tlen - sdone; |
| 219 | break; |
| 220 | |
| 221 | default: |
| 222 | Perl_croak(aTHX_ "Unexpected code %d converting %s %s", |
| 223 | code, (dir == enc->f_utf8) ? "to" : "from", |
| 224 | enc->name[0]); |
| 225 | return &PL_sv_undef; |
| 226 | } |
| 227 | } |
| 228 | ENCODE_SET_SRC: |
| 229 | if (check && !(check & ENCODE_LEAVE_SRC)){ |
| 230 | sdone = SvCUR(src) - (slen+sdone); |
| 231 | if (sdone) { |
| 232 | sv_setpvn(src, (char*)s+slen, sdone); |
| 233 | } |
| 234 | SvCUR_set(src, sdone); |
| 235 | } |
| 236 | /* warn("check = 0x%X, code = 0x%d\n", check, code); */ |
| 237 | |
| 238 | SvCUR_set(dst, dlen+ddone); |
| 239 | SvPOK_only(dst); |
| 240 | |
| 241 | #if ENCODE_XS_PROFILE |
| 242 | if (SvCUR(dst) > SvCUR(src)){ |
| 243 | Perl_warn(aTHX_ |
| 244 | "SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n", |
| 245 | SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst), |
| 246 | (SvLEN(dst) - SvCUR(dst))*1.0/SvLEN(dst)*100.0); |
| 247 | } |
| 248 | #endif |
| 249 | |
| 250 | if (offset) |
| 251 | *offset += sdone + slen; |
| 252 | |
| 253 | ENCODE_END: |
| 254 | *SvEND(dst) = '\0'; |
| 255 | if (retcode) *retcode = code; |
| 256 | return dst; |
| 257 | } |
| 258 | |
| 259 | MODULE = Encode PACKAGE = Encode::utf8 PREFIX = Method_ |
| 260 | |
| 261 | PROTOTYPES: DISABLE |
| 262 | |
| 263 | void |
| 264 | Method_renew(obj) |
| 265 | SV * obj |
| 266 | CODE: |
| 267 | { |
| 268 | XSRETURN(1); |
| 269 | } |
| 270 | |
| 271 | void |
| 272 | Method_decode_xs(obj,src,check = 0) |
| 273 | SV * obj |
| 274 | SV * src |
| 275 | int check |
| 276 | CODE: |
| 277 | { |
| 278 | STRLEN slen; |
| 279 | U8 *s = (U8 *) SvPV(src, slen); |
| 280 | U8 *e = (U8 *) SvEND(src); |
| 281 | SV *dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */ |
| 282 | SvPOK_only(dst); |
| 283 | SvCUR_set(dst,0); |
| 284 | if (SvUTF8(src)) { |
| 285 | s = utf8_to_bytes(s,&slen); |
| 286 | if (s) { |
| 287 | SvCUR_set(src,slen); |
| 288 | SvUTF8_off(src); |
| 289 | e = s+slen; |
| 290 | } |
| 291 | else { |
| 292 | croak("Cannot decode string with wide characters"); |
| 293 | } |
| 294 | } |
| 295 | while (s < e) { |
| 296 | if (UTF8_IS_INVARIANT(*s) || UTF8_IS_START(*s)) { |
| 297 | U8 skip = UTF8SKIP(s); |
| 298 | if ((s + skip) > e) { |
| 299 | /* Partial character - done */ |
| 300 | break; |
| 301 | } |
| 302 | else if (is_utf8_char(s)) { |
| 303 | /* Whole char is good */ |
| 304 | sv_catpvn(dst,(char *)s,skip); |
| 305 | s += skip; |
| 306 | continue; |
| 307 | } |
| 308 | else { |
| 309 | /* starts ok but isn't "good" */ |
| 310 | } |
| 311 | } |
| 312 | else { |
| 313 | /* Invalid start byte */ |
| 314 | } |
| 315 | /* If we get here there is something wrong with alleged UTF-8 */ |
| 316 | if (check & ENCODE_DIE_ON_ERR){ |
| 317 | Perl_croak(aTHX_ ERR_DECODE_NOMAP, "utf8", (UV)*s); |
| 318 | XSRETURN(0); |
| 319 | } |
| 320 | if (check & ENCODE_WARN_ON_ERR){ |
| 321 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
| 322 | ERR_DECODE_NOMAP, "utf8", (UV)*s); |
| 323 | } |
| 324 | if (check & ENCODE_RETURN_ON_ERR) { |
| 325 | break; |
| 326 | } |
| 327 | if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){ |
| 328 | SV* perlqq = newSVpvf("\\x%02" UVXf, (UV)*s); |
| 329 | sv_catsv(dst, perlqq); |
| 330 | SvREFCNT_dec(perlqq); |
| 331 | } else { |
| 332 | sv_catpv(dst, FBCHAR_UTF8); |
| 333 | } |
| 334 | s++; |
| 335 | } |
| 336 | *SvEND(dst) = '\0'; |
| 337 | |
| 338 | /* Clear out translated part of source unless asked not to */ |
| 339 | if (check && !(check & ENCODE_LEAVE_SRC)){ |
| 340 | slen = e-s; |
| 341 | if (slen) { |
| 342 | sv_setpvn(src, (char*)s, slen); |
| 343 | } |
| 344 | SvCUR_set(src, slen); |
| 345 | } |
| 346 | SvUTF8_on(dst); |
| 347 | ST(0) = sv_2mortal(dst); |
| 348 | XSRETURN(1); |
| 349 | } |
| 350 | |
| 351 | void |
| 352 | Method_encode_xs(obj,src,check = 0) |
| 353 | SV * obj |
| 354 | SV * src |
| 355 | int check |
| 356 | CODE: |
| 357 | { |
| 358 | STRLEN slen; |
| 359 | U8 *s = (U8 *) SvPV(src, slen); |
| 360 | U8 *e = (U8 *) SvEND(src); |
| 361 | SV *dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */ |
| 362 | if (SvUTF8(src)) { |
| 363 | /* Already encoded - trust it and just copy the octets */ |
| 364 | sv_setpvn(dst,(char *)s,(e-s)); |
| 365 | s = e; |
| 366 | } |
| 367 | else { |
| 368 | /* Native bytes - can always encode */ |
| 369 | U8 *d = (U8 *) SvGROW(dst, 2*slen+1); /* +1 or assertion will botch */ |
| 370 | while (s < e) { |
| 371 | UV uv = NATIVE_TO_UNI((UV) *s++); |
| 372 | if (UNI_IS_INVARIANT(uv)) |
| 373 | *d++ = (U8)UTF_TO_NATIVE(uv); |
| 374 | else { |
| 375 | *d++ = (U8)UTF8_EIGHT_BIT_HI(uv); |
| 376 | *d++ = (U8)UTF8_EIGHT_BIT_LO(uv); |
| 377 | } |
| 378 | } |
| 379 | SvCUR_set(dst, d- (U8 *)SvPVX(dst)); |
| 380 | *SvEND(dst) = '\0'; |
| 381 | } |
| 382 | |
| 383 | /* Clear out translated part of source unless asked not to */ |
| 384 | if (check && !(check & ENCODE_LEAVE_SRC)){ |
| 385 | slen = e-s; |
| 386 | if (slen) { |
| 387 | sv_setpvn(src, (char*)s, slen); |
| 388 | } |
| 389 | SvCUR_set(src, slen); |
| 390 | } |
| 391 | SvPOK_only(dst); |
| 392 | SvUTF8_off(dst); |
| 393 | ST(0) = sv_2mortal(dst); |
| 394 | XSRETURN(1); |
| 395 | } |
| 396 | |
| 397 | MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_ |
| 398 | |
| 399 | PROTOTYPES: ENABLE |
| 400 | |
| 401 | void |
| 402 | Method_renew(obj) |
| 403 | SV * obj |
| 404 | CODE: |
| 405 | { |
| 406 | XSRETURN(1); |
| 407 | } |
| 408 | |
| 409 | void |
| 410 | Method_name(obj) |
| 411 | SV * obj |
| 412 | CODE: |
| 413 | { |
| 414 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
| 415 | ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0]))); |
| 416 | XSRETURN(1); |
| 417 | } |
| 418 | |
| 419 | void |
| 420 | Method_cat_decode(obj, dst, src, off, term, check = 0) |
| 421 | SV * obj |
| 422 | SV * dst |
| 423 | SV * src |
| 424 | SV * off |
| 425 | SV * term |
| 426 | int check |
| 427 | CODE: |
| 428 | { |
| 429 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
| 430 | STRLEN offset = (STRLEN)SvIV(off); |
| 431 | int code = 0; |
| 432 | if (SvUTF8(src)) { |
| 433 | sv_utf8_downgrade(src, FALSE); |
| 434 | } |
| 435 | sv_catsv(dst, encode_method(aTHX_ enc, enc->t_utf8, src, check, |
| 436 | &offset, term, &code)); |
| 437 | SvIVX(off) = (IV)offset; |
| 438 | if (code == ENCODE_FOUND_TERM) { |
| 439 | ST(0) = &PL_sv_yes; |
| 440 | }else{ |
| 441 | ST(0) = &PL_sv_no; |
| 442 | } |
| 443 | XSRETURN(1); |
| 444 | } |
| 445 | |
| 446 | void |
| 447 | Method_decode(obj,src,check = 0) |
| 448 | SV * obj |
| 449 | SV * src |
| 450 | int check |
| 451 | CODE: |
| 452 | { |
| 453 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
| 454 | if (SvUTF8(src)) { |
| 455 | sv_utf8_downgrade(src, FALSE); |
| 456 | } |
| 457 | ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check, |
| 458 | NULL, Nullsv, NULL); |
| 459 | SvUTF8_on(ST(0)); |
| 460 | XSRETURN(1); |
| 461 | } |
| 462 | |
| 463 | void |
| 464 | Method_encode(obj,src,check = 0) |
| 465 | SV * obj |
| 466 | SV * src |
| 467 | int check |
| 468 | CODE: |
| 469 | { |
| 470 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
| 471 | sv_utf8_upgrade(src); |
| 472 | ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check, |
| 473 | NULL, Nullsv, NULL); |
| 474 | XSRETURN(1); |
| 475 | } |
| 476 | |
| 477 | void |
| 478 | Method_needs_lines(obj) |
| 479 | SV * obj |
| 480 | CODE: |
| 481 | { |
| 482 | /* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */ |
| 483 | ST(0) = &PL_sv_no; |
| 484 | XSRETURN(1); |
| 485 | } |
| 486 | |
| 487 | void |
| 488 | Method_perlio_ok(obj) |
| 489 | SV * obj |
| 490 | CODE: |
| 491 | { |
| 492 | /* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */ |
| 493 | /* require_pv(PERLIO_FILENAME); */ |
| 494 | |
| 495 | eval_pv("require PerlIO::encoding", 0); |
| 496 | |
| 497 | if (SvTRUE(get_sv("@", 0))) { |
| 498 | ST(0) = &PL_sv_no; |
| 499 | }else{ |
| 500 | ST(0) = &PL_sv_yes; |
| 501 | } |
| 502 | XSRETURN(1); |
| 503 | } |
| 504 | |
| 505 | MODULE = Encode PACKAGE = Encode |
| 506 | |
| 507 | PROTOTYPES: ENABLE |
| 508 | |
| 509 | I32 |
| 510 | _bytes_to_utf8(sv, ...) |
| 511 | SV * sv |
| 512 | CODE: |
| 513 | { |
| 514 | SV * encoding = items == 2 ? ST(1) : Nullsv; |
| 515 | |
| 516 | if (encoding) |
| 517 | RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding)); |
| 518 | else { |
| 519 | STRLEN len; |
| 520 | U8* s = (U8*)SvPV(sv, len); |
| 521 | U8* converted; |
| 522 | |
| 523 | converted = bytes_to_utf8(s, &len); /* This allocs */ |
| 524 | sv_setpvn(sv, (char *)converted, len); |
| 525 | SvUTF8_on(sv); /* XXX Should we? */ |
| 526 | Safefree(converted); /* ... so free it */ |
| 527 | RETVAL = len; |
| 528 | } |
| 529 | } |
| 530 | OUTPUT: |
| 531 | RETVAL |
| 532 | |
| 533 | I32 |
| 534 | _utf8_to_bytes(sv, ...) |
| 535 | SV * sv |
| 536 | CODE: |
| 537 | { |
| 538 | SV * to = items > 1 ? ST(1) : Nullsv; |
| 539 | SV * check = items > 2 ? ST(2) : Nullsv; |
| 540 | |
| 541 | if (to) { |
| 542 | RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to)); |
| 543 | } else { |
| 544 | STRLEN len; |
| 545 | U8 *s = (U8*)SvPV(sv, len); |
| 546 | |
| 547 | RETVAL = 0; |
| 548 | if (SvTRUE(check)) { |
| 549 | /* Must do things the slow way */ |
| 550 | U8 *dest; |
| 551 | /* We need a copy to pass to check() */ |
| 552 | U8 *src = (U8*)savepv((char *)s); |
| 553 | U8 *send = s + len; |
| 554 | |
| 555 | New(83, dest, len, U8); /* I think */ |
| 556 | |
| 557 | while (s < send) { |
| 558 | if (*s < 0x80){ |
| 559 | *dest++ = *s++; |
| 560 | } else { |
| 561 | STRLEN ulen; |
| 562 | UV uv = *s++; |
| 563 | |
| 564 | /* Have to do it all ourselves because of error routine, |
| 565 | aargh. */ |
| 566 | if (!(uv & 0x40)){ goto failure; } |
| 567 | if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; } |
| 568 | else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; } |
| 569 | else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; } |
| 570 | else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; } |
| 571 | else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; } |
| 572 | else if (!(uv & 0x01)) { ulen = 7; uv = 0; } |
| 573 | else { ulen = 13; uv = 0; } |
| 574 | |
| 575 | /* Note change to utf8.c variable naming, for variety */ |
| 576 | while (ulen--) { |
| 577 | if ((*s & 0xc0) != 0x80){ |
| 578 | goto failure; |
| 579 | } else { |
| 580 | uv = (uv << 6) | (*s++ & 0x3f); |
| 581 | } |
| 582 | } |
| 583 | if (uv > 256) { |
| 584 | failure: |
| 585 | call_failure(check, s, dest, src); |
| 586 | /* Now what happens? */ |
| 587 | } |
| 588 | *dest++ = (U8)uv; |
| 589 | } |
| 590 | } |
| 591 | } else { |
| 592 | RETVAL = (utf8_to_bytes(s, &len) ? len : 0); |
| 593 | } |
| 594 | } |
| 595 | } |
| 596 | OUTPUT: |
| 597 | RETVAL |
| 598 | |
| 599 | bool |
| 600 | is_utf8(sv, check = 0) |
| 601 | SV * sv |
| 602 | int check |
| 603 | CODE: |
| 604 | { |
| 605 | if (SvGMAGICAL(sv)) /* it could be $1, for example */ |
| 606 | sv = newSVsv(sv); /* GMAGIG will be done */ |
| 607 | if (SvPOK(sv)) { |
| 608 | RETVAL = SvUTF8(sv) ? TRUE : FALSE; |
| 609 | if (RETVAL && |
| 610 | check && |
| 611 | !is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) |
| 612 | RETVAL = FALSE; |
| 613 | } else { |
| 614 | RETVAL = FALSE; |
| 615 | } |
| 616 | if (sv != ST(0)) |
| 617 | SvREFCNT_dec(sv); /* it was a temp copy */ |
| 618 | } |
| 619 | OUTPUT: |
| 620 | RETVAL |
| 621 | |
| 622 | SV * |
| 623 | _utf8_on(sv) |
| 624 | SV * sv |
| 625 | CODE: |
| 626 | { |
| 627 | if (SvPOK(sv)) { |
| 628 | SV *rsv = newSViv(SvUTF8(sv)); |
| 629 | RETVAL = rsv; |
| 630 | SvUTF8_on(sv); |
| 631 | } else { |
| 632 | RETVAL = &PL_sv_undef; |
| 633 | } |
| 634 | } |
| 635 | OUTPUT: |
| 636 | RETVAL |
| 637 | |
| 638 | SV * |
| 639 | _utf8_off(sv) |
| 640 | SV * sv |
| 641 | CODE: |
| 642 | { |
| 643 | if (SvPOK(sv)) { |
| 644 | SV *rsv = newSViv(SvUTF8(sv)); |
| 645 | RETVAL = rsv; |
| 646 | SvUTF8_off(sv); |
| 647 | } else { |
| 648 | RETVAL = &PL_sv_undef; |
| 649 | } |
| 650 | } |
| 651 | OUTPUT: |
| 652 | RETVAL |
| 653 | |
| 654 | int |
| 655 | DIE_ON_ERR() |
| 656 | CODE: |
| 657 | RETVAL = ENCODE_DIE_ON_ERR; |
| 658 | OUTPUT: |
| 659 | RETVAL |
| 660 | |
| 661 | int |
| 662 | WARN_ON_ERR() |
| 663 | CODE: |
| 664 | RETVAL = ENCODE_WARN_ON_ERR; |
| 665 | OUTPUT: |
| 666 | RETVAL |
| 667 | |
| 668 | int |
| 669 | LEAVE_SRC() |
| 670 | CODE: |
| 671 | RETVAL = ENCODE_LEAVE_SRC; |
| 672 | OUTPUT: |
| 673 | RETVAL |
| 674 | |
| 675 | int |
| 676 | RETURN_ON_ERR() |
| 677 | CODE: |
| 678 | RETVAL = ENCODE_RETURN_ON_ERR; |
| 679 | OUTPUT: |
| 680 | RETVAL |
| 681 | |
| 682 | int |
| 683 | PERLQQ() |
| 684 | CODE: |
| 685 | RETVAL = ENCODE_PERLQQ; |
| 686 | OUTPUT: |
| 687 | RETVAL |
| 688 | |
| 689 | int |
| 690 | HTMLCREF() |
| 691 | CODE: |
| 692 | RETVAL = ENCODE_HTMLCREF; |
| 693 | OUTPUT: |
| 694 | RETVAL |
| 695 | |
| 696 | int |
| 697 | XMLCREF() |
| 698 | CODE: |
| 699 | RETVAL = ENCODE_XMLCREF; |
| 700 | OUTPUT: |
| 701 | RETVAL |
| 702 | |
| 703 | int |
| 704 | FB_DEFAULT() |
| 705 | CODE: |
| 706 | RETVAL = ENCODE_FB_DEFAULT; |
| 707 | OUTPUT: |
| 708 | RETVAL |
| 709 | |
| 710 | int |
| 711 | FB_CROAK() |
| 712 | CODE: |
| 713 | RETVAL = ENCODE_FB_CROAK; |
| 714 | OUTPUT: |
| 715 | RETVAL |
| 716 | |
| 717 | int |
| 718 | FB_QUIET() |
| 719 | CODE: |
| 720 | RETVAL = ENCODE_FB_QUIET; |
| 721 | OUTPUT: |
| 722 | RETVAL |
| 723 | |
| 724 | int |
| 725 | FB_WARN() |
| 726 | CODE: |
| 727 | RETVAL = ENCODE_FB_WARN; |
| 728 | OUTPUT: |
| 729 | RETVAL |
| 730 | |
| 731 | int |
| 732 | FB_PERLQQ() |
| 733 | CODE: |
| 734 | RETVAL = ENCODE_FB_PERLQQ; |
| 735 | OUTPUT: |
| 736 | RETVAL |
| 737 | |
| 738 | int |
| 739 | FB_HTMLCREF() |
| 740 | CODE: |
| 741 | RETVAL = ENCODE_FB_HTMLCREF; |
| 742 | OUTPUT: |
| 743 | RETVAL |
| 744 | |
| 745 | int |
| 746 | FB_XMLCREF() |
| 747 | CODE: |
| 748 | RETVAL = ENCODE_FB_XMLCREF; |
| 749 | OUTPUT: |
| 750 | RETVAL |
| 751 | |
| 752 | BOOT: |
| 753 | { |
| 754 | #include "def_t.h" |
| 755 | #include "def_t.exh" |
| 756 | } |