| 1 |
/* |
| 2 |
$Id: Encode.xs,v 2.4 2005/05/16 18:46:36 dankogai Exp dankogai $ |
| 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 |
#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 |
|
| 38 |
void |
| 39 |
Encode_XSEncoding(pTHX_ encode_t * enc) |
| 40 |
{ |
| 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]) { |
| 48 |
const char *name = enc->name[i++]; |
| 49 |
XPUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
| 50 |
} |
| 51 |
PUTBACK; |
| 52 |
call_pv("Encode::define_encoding", G_DISCARD); |
| 53 |
SvREFCNT_dec(sv); |
| 54 |
} |
| 55 |
|
| 56 |
void |
| 57 |
call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig) |
| 58 |
{ |
| 59 |
/* Exists for breakpointing */ |
| 60 |
} |
| 61 |
|
| 62 |
|
| 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 |
|
| 66 |
static SV * |
| 67 |
encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src, |
| 68 |
int check, STRLEN * offset, SV * term, int * retcode) |
| 69 |
{ |
| 70 |
STRLEN slen; |
| 71 |
U8 *s = (U8 *) SvPV(src, slen); |
| 72 |
STRLEN tlen = slen; |
| 73 |
STRLEN ddone = 0; |
| 74 |
STRLEN sdone = 0; |
| 75 |
|
| 76 |
/* We allocate slen+1. |
| 77 |
PerlIO dumps core if this value is smaller than this. */ |
| 78 |
SV *dst = sv_2mortal(newSV(slen+1)); |
| 79 |
U8 *d = (U8 *)SvPVX(dst); |
| 80 |
STRLEN dlen = SvLEN(dst)-1; |
| 81 |
int code = 0; |
| 82 |
STRLEN trmlen = 0; |
| 83 |
U8 *trm = term ? (U8*) SvPV(term, trmlen) : NULL; |
| 84 |
|
| 85 |
if (offset) { |
| 86 |
s += *offset; |
| 87 |
if (slen > *offset){ /* safeguard against slen overflow */ |
| 88 |
slen -= *offset; |
| 89 |
}else{ |
| 90 |
slen = 0; |
| 91 |
} |
| 92 |
tlen = slen; |
| 93 |
} |
| 94 |
|
| 95 |
if (slen == 0){ |
| 96 |
SvCUR_set(dst, 0); |
| 97 |
SvPOK_only(dst); |
| 98 |
goto ENCODE_END; |
| 99 |
} |
| 100 |
|
| 101 |
while( (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check, |
| 102 |
trm, trmlen)) ) |
| 103 |
{ |
| 104 |
SvCUR_set(dst, dlen+ddone); |
| 105 |
SvPOK_only(dst); |
| 106 |
|
| 107 |
if (code == ENCODE_FALLBACK || code == ENCODE_PARTIAL || |
| 108 |
code == ENCODE_FOUND_TERM) { |
| 109 |
break; |
| 110 |
} |
| 111 |
switch (code) { |
| 112 |
case ENCODE_NOSPACE: |
| 113 |
{ |
| 114 |
STRLEN more = 0; /* make sure you initialize! */ |
| 115 |
STRLEN sleft; |
| 116 |
sdone += slen; |
| 117 |
ddone += dlen; |
| 118 |
sleft = tlen - sdone; |
| 119 |
#if ENCODE_XS_PROFILE >= 2 |
| 120 |
Perl_warn(aTHX_ |
| 121 |
"more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n", |
| 122 |
more, sdone, sleft, SvLEN(dst)); |
| 123 |
#endif |
| 124 |
if (sdone != 0) { /* has src ever been processed ? */ |
| 125 |
#if ENCODE_XS_USEFP == 2 |
| 126 |
more = (1.0*tlen*SvLEN(dst)+sdone-1)/sdone |
| 127 |
- SvLEN(dst); |
| 128 |
#elif ENCODE_XS_USEFP |
| 129 |
more = (STRLEN)((1.0*SvLEN(dst)+1)/sdone * sleft); |
| 130 |
#else |
| 131 |
/* safe until SvLEN(dst) == MAX_INT/16 */ |
| 132 |
more = (16*SvLEN(dst)+1)/sdone/16 * sleft; |
| 133 |
#endif |
| 134 |
} |
| 135 |
more += UTF8_MAXLEN; /* insurance policy */ |
| 136 |
d = (U8 *) SvGROW(dst, SvLEN(dst) + more); |
| 137 |
/* dst need to grow need MORE bytes! */ |
| 138 |
if (ddone >= SvLEN(dst)) { |
| 139 |
Perl_croak(aTHX_ "Destination couldn't be grown."); |
| 140 |
} |
| 141 |
dlen = SvLEN(dst)-ddone-1; |
| 142 |
d += ddone; |
| 143 |
s += slen; |
| 144 |
slen = tlen-sdone; |
| 145 |
continue; |
| 146 |
} |
| 147 |
case ENCODE_NOREP: |
| 148 |
/* encoding */ |
| 149 |
if (dir == enc->f_utf8) { |
| 150 |
STRLEN clen; |
| 151 |
UV ch = |
| 152 |
utf8n_to_uvuni(s+slen, (SvCUR(src)-slen), |
| 153 |
&clen, UTF8_ALLOW_ANY|UTF8_CHECK_ONLY); |
| 154 |
if (check & ENCODE_DIE_ON_ERR) { |
| 155 |
Perl_croak(aTHX_ ERR_ENCODE_NOMAP, |
| 156 |
(UV)ch, enc->name[0]); |
| 157 |
return &PL_sv_undef; /* never reaches but be safe */ |
| 158 |
} |
| 159 |
if (check & ENCODE_WARN_ON_ERR){ |
| 160 |
Perl_warner(aTHX_ packWARN(WARN_UTF8), |
| 161 |
ERR_ENCODE_NOMAP, (UV)ch, enc->name[0]); |
| 162 |
} |
| 163 |
if (check & ENCODE_RETURN_ON_ERR){ |
| 164 |
goto ENCODE_SET_SRC; |
| 165 |
} |
| 166 |
if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){ |
| 167 |
SV* subchar = |
| 168 |
newSVpvf(check & ENCODE_PERLQQ ? "\\x{%04"UVxf"}" : |
| 169 |
check & ENCODE_HTMLCREF ? "&#%" UVuf ";" : |
| 170 |
"&#x%" UVxf ";", (UV)ch); |
| 171 |
sdone += slen + clen; |
| 172 |
ddone += dlen + SvCUR(subchar); |
| 173 |
sv_catsv(dst, subchar); |
| 174 |
SvREFCNT_dec(subchar); |
| 175 |
} else { |
| 176 |
/* fallback char */ |
| 177 |
sdone += slen + clen; |
| 178 |
ddone += dlen + enc->replen; |
| 179 |
sv_catpvn(dst, (char*)enc->rep, enc->replen); |
| 180 |
} |
| 181 |
} |
| 182 |
/* decoding */ |
| 183 |
else { |
| 184 |
if (check & ENCODE_DIE_ON_ERR){ |
| 185 |
Perl_croak(aTHX_ ERR_DECODE_NOMAP, |
| 186 |
enc->name[0], (UV)s[slen]); |
| 187 |
return &PL_sv_undef; /* never reaches but be safe */ |
| 188 |
} |
| 189 |
if (check & ENCODE_WARN_ON_ERR){ |
| 190 |
Perl_warner( |
| 191 |
aTHX_ packWARN(WARN_UTF8), |
| 192 |
ERR_DECODE_NOMAP, |
| 193 |
enc->name[0], (UV)s[slen]); |
| 194 |
} |
| 195 |
if (check & ENCODE_RETURN_ON_ERR){ |
| 196 |
goto ENCODE_SET_SRC; |
| 197 |
} |
| 198 |
if (check & |
| 199 |
(ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){ |
| 200 |
SV* subchar = newSVpvf("\\x%02" UVXf, (UV)s[slen]); |
| 201 |
sdone += slen + 1; |
| 202 |
ddone += dlen + SvCUR(subchar); |
| 203 |
sv_catsv(dst, subchar); |
| 204 |
SvREFCNT_dec(subchar); |
| 205 |
} else { |
| 206 |
sdone += slen + 1; |
| 207 |
ddone += dlen + strlen(FBCHAR_UTF8); |
| 208 |
sv_catpv(dst, FBCHAR_UTF8); |
| 209 |
} |
| 210 |
} |
| 211 |
/* settle variables when fallback */ |
| 212 |
d = (U8 *)SvEND(dst); |
| 213 |
dlen = SvLEN(dst) - ddone - 1; |
| 214 |
s = (U8*)SvPVX(src) + sdone; |
| 215 |
slen = tlen - sdone; |
| 216 |
break; |
| 217 |
|
| 218 |
default: |
| 219 |
Perl_croak(aTHX_ "Unexpected code %d converting %s %s", |
| 220 |
code, (dir == enc->f_utf8) ? "to" : "from", |
| 221 |
enc->name[0]); |
| 222 |
return &PL_sv_undef; |
| 223 |
} |
| 224 |
} |
| 225 |
ENCODE_SET_SRC: |
| 226 |
if (check && !(check & ENCODE_LEAVE_SRC)){ |
| 227 |
sdone = SvCUR(src) - (slen+sdone); |
| 228 |
if (sdone) { |
| 229 |
sv_setpvn(src, (char*)s+slen, sdone); |
| 230 |
} |
| 231 |
SvCUR_set(src, sdone); |
| 232 |
} |
| 233 |
/* warn("check = 0x%X, code = 0x%d\n", check, code); */ |
| 234 |
|
| 235 |
SvCUR_set(dst, dlen+ddone); |
| 236 |
SvPOK_only(dst); |
| 237 |
|
| 238 |
#if ENCODE_XS_PROFILE |
| 239 |
if (SvCUR(dst) > SvCUR(src)){ |
| 240 |
Perl_warn(aTHX_ |
| 241 |
"SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n", |
| 242 |
SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst), |
| 243 |
(SvLEN(dst) - SvCUR(dst))*1.0/SvLEN(dst)*100.0); |
| 244 |
} |
| 245 |
#endif |
| 246 |
|
| 247 |
if (offset) |
| 248 |
*offset += sdone + slen; |
| 249 |
|
| 250 |
ENCODE_END: |
| 251 |
*SvEND(dst) = '\0'; |
| 252 |
if (retcode) *retcode = code; |
| 253 |
return dst; |
| 254 |
} |
| 255 |
|
| 256 |
static bool |
| 257 |
strict_utf8(pTHX_ SV* sv) |
| 258 |
{ |
| 259 |
HV* hv; |
| 260 |
SV** svp; |
| 261 |
sv = SvRV(sv); |
| 262 |
if (!sv || SvTYPE(sv) != SVt_PVHV) |
| 263 |
return 0; |
| 264 |
hv = (HV*)sv; |
| 265 |
svp = hv_fetch(hv, "strict_utf8", 11, 0); |
| 266 |
if (!svp) |
| 267 |
return 0; |
| 268 |
return SvTRUE(*svp); |
| 269 |
} |
| 270 |
|
| 271 |
static U8* |
| 272 |
process_utf8(pTHX_ SV* dst, U8* s, U8* e, int check, |
| 273 |
bool encode, bool strict, bool stop_at_partial) |
| 274 |
{ |
| 275 |
UV uv; |
| 276 |
STRLEN ulen; |
| 277 |
|
| 278 |
SvPOK_only(dst); |
| 279 |
SvCUR_set(dst,0); |
| 280 |
|
| 281 |
while (s < e) { |
| 282 |
if (UTF8_IS_INVARIANT(*s)) { |
| 283 |
sv_catpvn(dst, (char *)s, 1); |
| 284 |
s++; |
| 285 |
continue; |
| 286 |
} |
| 287 |
|
| 288 |
if (UTF8_IS_START(*s)) { |
| 289 |
U8 skip = UTF8SKIP(s); |
| 290 |
if ((s + skip) > e) { |
| 291 |
/* Partial character */ |
| 292 |
/* XXX could check that rest of bytes are UTF8_IS_CONTINUATION(ch) */ |
| 293 |
if (stop_at_partial) |
| 294 |
break; |
| 295 |
|
| 296 |
goto malformed_byte; |
| 297 |
} |
| 298 |
|
| 299 |
uv = utf8n_to_uvuni(s, e - s, &ulen, |
| 300 |
UTF8_CHECK_ONLY | (strict ? UTF8_ALLOW_STRICT : |
| 301 |
UTF8_ALLOW_NONSTRICT) |
| 302 |
); |
| 303 |
#if 1 /* perl-5.8.6 and older do not check UTF8_ALLOW_LONG */ |
| 304 |
if (strict && uv > PERL_UNICODE_MAX) |
| 305 |
ulen = -1; |
| 306 |
#endif |
| 307 |
if (ulen == -1) { |
| 308 |
if (strict) { |
| 309 |
uv = utf8n_to_uvuni(s, e - s, &ulen, |
| 310 |
UTF8_CHECK_ONLY | UTF8_ALLOW_NONSTRICT); |
| 311 |
if (ulen == -1) |
| 312 |
goto malformed_byte; |
| 313 |
goto malformed; |
| 314 |
} |
| 315 |
goto malformed_byte; |
| 316 |
} |
| 317 |
|
| 318 |
|
| 319 |
/* Whole char is good */ |
| 320 |
sv_catpvn(dst,(char *)s,skip); |
| 321 |
s += skip; |
| 322 |
continue; |
| 323 |
} |
| 324 |
|
| 325 |
/* If we get here there is something wrong with alleged UTF-8 */ |
| 326 |
malformed_byte: |
| 327 |
uv = (UV)*s; |
| 328 |
ulen = 1; |
| 329 |
|
| 330 |
malformed: |
| 331 |
if (check & ENCODE_DIE_ON_ERR){ |
| 332 |
if (encode) |
| 333 |
Perl_croak(aTHX_ ERR_ENCODE_NOMAP, uv, "utf8"); |
| 334 |
else |
| 335 |
Perl_croak(aTHX_ ERR_DECODE_NOMAP, "utf8", uv); |
| 336 |
} |
| 337 |
if (check & ENCODE_WARN_ON_ERR){ |
| 338 |
if (encode) |
| 339 |
Perl_warner(aTHX_ packWARN(WARN_UTF8), |
| 340 |
ERR_ENCODE_NOMAP, uv, "utf8"); |
| 341 |
else |
| 342 |
Perl_warner(aTHX_ packWARN(WARN_UTF8), |
| 343 |
ERR_DECODE_NOMAP, "utf8", uv); |
| 344 |
} |
| 345 |
if (check & ENCODE_RETURN_ON_ERR) { |
| 346 |
break; |
| 347 |
} |
| 348 |
if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){ |
| 349 |
SV* subchar = newSVpvf(check & ENCODE_PERLQQ ? (ulen == 1 ? "\\x%02" UVXf : "\\x{%04" UVXf "}"): |
| 350 |
check & ENCODE_HTMLCREF ? "&#%" UVuf ";" : |
| 351 |
"&#x%" UVxf ";", uv); |
| 352 |
sv_catsv(dst, subchar); |
| 353 |
SvREFCNT_dec(subchar); |
| 354 |
} else { |
| 355 |
sv_catpv(dst, FBCHAR_UTF8); |
| 356 |
} |
| 357 |
s += ulen; |
| 358 |
} |
| 359 |
*SvEND(dst) = '\0'; |
| 360 |
|
| 361 |
return s; |
| 362 |
} |
| 363 |
|
| 364 |
|
| 365 |
MODULE = Encode PACKAGE = Encode::utf8 PREFIX = Method_ |
| 366 |
|
| 367 |
PROTOTYPES: DISABLE |
| 368 |
|
| 369 |
void |
| 370 |
Method_decode_xs(obj,src,check = 0) |
| 371 |
SV * obj |
| 372 |
SV * src |
| 373 |
int check |
| 374 |
CODE: |
| 375 |
{ |
| 376 |
STRLEN slen; |
| 377 |
U8 *s = (U8 *) SvPV(src, slen); |
| 378 |
U8 *e = (U8 *) SvEND(src); |
| 379 |
SV *dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */ |
| 380 |
|
| 381 |
/* |
| 382 |
* PerlIO check -- we assume the object is of PerlIO if renewed |
| 383 |
*/ |
| 384 |
int renewed = 0; |
| 385 |
dSP; ENTER; SAVETMPS; |
| 386 |
PUSHMARK(sp); |
| 387 |
XPUSHs(obj); |
| 388 |
PUTBACK; |
| 389 |
if (call_method("renewed",G_SCALAR) == 1) { |
| 390 |
SPAGAIN; |
| 391 |
renewed = POPi; |
| 392 |
PUTBACK; |
| 393 |
#if 0 |
| 394 |
fprintf(stderr, "renewed == %d\n", renewed); |
| 395 |
#endif |
| 396 |
} |
| 397 |
FREETMPS; LEAVE; |
| 398 |
/* end PerlIO check */ |
| 399 |
|
| 400 |
if (SvUTF8(src)) { |
| 401 |
s = utf8_to_bytes(s,&slen); |
| 402 |
if (s) { |
| 403 |
SvCUR_set(src,slen); |
| 404 |
SvUTF8_off(src); |
| 405 |
e = s+slen; |
| 406 |
} |
| 407 |
else { |
| 408 |
croak("Cannot decode string with wide characters"); |
| 409 |
} |
| 410 |
} |
| 411 |
|
| 412 |
s = process_utf8(aTHX_ dst, s, e, check, 0, strict_utf8(aTHX_ obj), renewed); |
| 413 |
|
| 414 |
/* Clear out translated part of source unless asked not to */ |
| 415 |
if (check && !(check & ENCODE_LEAVE_SRC)){ |
| 416 |
slen = e-s; |
| 417 |
if (slen) { |
| 418 |
sv_setpvn(src, (char*)s, slen); |
| 419 |
} |
| 420 |
SvCUR_set(src, slen); |
| 421 |
} |
| 422 |
SvUTF8_on(dst); |
| 423 |
ST(0) = sv_2mortal(dst); |
| 424 |
XSRETURN(1); |
| 425 |
} |
| 426 |
|
| 427 |
void |
| 428 |
Method_encode_xs(obj,src,check = 0) |
| 429 |
SV * obj |
| 430 |
SV * src |
| 431 |
int check |
| 432 |
CODE: |
| 433 |
{ |
| 434 |
STRLEN slen; |
| 435 |
U8 *s = (U8 *) SvPV(src, slen); |
| 436 |
U8 *e = (U8 *) SvEND(src); |
| 437 |
SV *dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */ |
| 438 |
if (SvUTF8(src)) { |
| 439 |
/* Already encoded */ |
| 440 |
if (strict_utf8(aTHX_ obj)) { |
| 441 |
s = process_utf8(aTHX_ dst, s, e, check, 1, 1, 0); |
| 442 |
} |
| 443 |
else { |
| 444 |
/* trust it and just copy the octets */ |
| 445 |
sv_setpvn(dst,(char *)s,(e-s)); |
| 446 |
s = e; |
| 447 |
} |
| 448 |
} |
| 449 |
else { |
| 450 |
/* Native bytes - can always encode */ |
| 451 |
U8 *d = (U8 *) SvGROW(dst, 2*slen+1); /* +1 or assertion will botch */ |
| 452 |
while (s < e) { |
| 453 |
UV uv = NATIVE_TO_UNI((UV) *s++); |
| 454 |
if (UNI_IS_INVARIANT(uv)) |
| 455 |
*d++ = (U8)UTF_TO_NATIVE(uv); |
| 456 |
else { |
| 457 |
*d++ = (U8)UTF8_EIGHT_BIT_HI(uv); |
| 458 |
*d++ = (U8)UTF8_EIGHT_BIT_LO(uv); |
| 459 |
} |
| 460 |
} |
| 461 |
SvCUR_set(dst, d- (U8 *)SvPVX(dst)); |
| 462 |
*SvEND(dst) = '\0'; |
| 463 |
} |
| 464 |
|
| 465 |
/* Clear out translated part of source unless asked not to */ |
| 466 |
if (check && !(check & ENCODE_LEAVE_SRC)){ |
| 467 |
slen = e-s; |
| 468 |
if (slen) { |
| 469 |
sv_setpvn(src, (char*)s, slen); |
| 470 |
} |
| 471 |
SvCUR_set(src, slen); |
| 472 |
} |
| 473 |
SvPOK_only(dst); |
| 474 |
SvUTF8_off(dst); |
| 475 |
ST(0) = sv_2mortal(dst); |
| 476 |
XSRETURN(1); |
| 477 |
} |
| 478 |
|
| 479 |
MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_ |
| 480 |
|
| 481 |
PROTOTYPES: ENABLE |
| 482 |
|
| 483 |
void |
| 484 |
Method_renew(obj) |
| 485 |
SV * obj |
| 486 |
CODE: |
| 487 |
{ |
| 488 |
XSRETURN(1); |
| 489 |
} |
| 490 |
|
| 491 |
int |
| 492 |
Method_renewed(obj) |
| 493 |
SV * obj |
| 494 |
CODE: |
| 495 |
RETVAL = 0; |
| 496 |
OUTPUT: |
| 497 |
RETVAL |
| 498 |
|
| 499 |
void |
| 500 |
Method_name(obj) |
| 501 |
SV * obj |
| 502 |
CODE: |
| 503 |
{ |
| 504 |
encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
| 505 |
ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0]))); |
| 506 |
XSRETURN(1); |
| 507 |
} |
| 508 |
|
| 509 |
void |
| 510 |
Method_cat_decode(obj, dst, src, off, term, check = 0) |
| 511 |
SV * obj |
| 512 |
SV * dst |
| 513 |
SV * src |
| 514 |
SV * off |
| 515 |
SV * term |
| 516 |
int check |
| 517 |
CODE: |
| 518 |
{ |
| 519 |
encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
| 520 |
STRLEN offset = (STRLEN)SvIV(off); |
| 521 |
int code = 0; |
| 522 |
if (SvUTF8(src)) { |
| 523 |
sv_utf8_downgrade(src, FALSE); |
| 524 |
} |
| 525 |
sv_catsv(dst, encode_method(aTHX_ enc, enc->t_utf8, src, check, |
| 526 |
&offset, term, &code)); |
| 527 |
SvIV_set(off, (IV)offset); |
| 528 |
if (code == ENCODE_FOUND_TERM) { |
| 529 |
ST(0) = &PL_sv_yes; |
| 530 |
}else{ |
| 531 |
ST(0) = &PL_sv_no; |
| 532 |
} |
| 533 |
XSRETURN(1); |
| 534 |
} |
| 535 |
|
| 536 |
void |
| 537 |
Method_decode(obj,src,check = 0) |
| 538 |
SV * obj |
| 539 |
SV * src |
| 540 |
int check |
| 541 |
CODE: |
| 542 |
{ |
| 543 |
encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
| 544 |
if (SvUTF8(src)) { |
| 545 |
sv_utf8_downgrade(src, FALSE); |
| 546 |
} |
| 547 |
ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check, |
| 548 |
NULL, Nullsv, NULL); |
| 549 |
SvUTF8_on(ST(0)); |
| 550 |
XSRETURN(1); |
| 551 |
} |
| 552 |
|
| 553 |
void |
| 554 |
Method_encode(obj,src,check = 0) |
| 555 |
SV * obj |
| 556 |
SV * src |
| 557 |
int check |
| 558 |
CODE: |
| 559 |
{ |
| 560 |
encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
| 561 |
sv_utf8_upgrade(src); |
| 562 |
ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check, |
| 563 |
NULL, Nullsv, NULL); |
| 564 |
XSRETURN(1); |
| 565 |
} |
| 566 |
|
| 567 |
void |
| 568 |
Method_needs_lines(obj) |
| 569 |
SV * obj |
| 570 |
CODE: |
| 571 |
{ |
| 572 |
/* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */ |
| 573 |
ST(0) = &PL_sv_no; |
| 574 |
XSRETURN(1); |
| 575 |
} |
| 576 |
|
| 577 |
void |
| 578 |
Method_perlio_ok(obj) |
| 579 |
SV * obj |
| 580 |
CODE: |
| 581 |
{ |
| 582 |
/* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */ |
| 583 |
/* require_pv(PERLIO_FILENAME); */ |
| 584 |
|
| 585 |
eval_pv("require PerlIO::encoding", 0); |
| 586 |
|
| 587 |
if (SvTRUE(get_sv("@", 0))) { |
| 588 |
ST(0) = &PL_sv_no; |
| 589 |
}else{ |
| 590 |
ST(0) = &PL_sv_yes; |
| 591 |
} |
| 592 |
XSRETURN(1); |
| 593 |
} |
| 594 |
|
| 595 |
MODULE = Encode PACKAGE = Encode |
| 596 |
|
| 597 |
PROTOTYPES: ENABLE |
| 598 |
|
| 599 |
I32 |
| 600 |
_bytes_to_utf8(sv, ...) |
| 601 |
SV * sv |
| 602 |
CODE: |
| 603 |
{ |
| 604 |
SV * encoding = items == 2 ? ST(1) : Nullsv; |
| 605 |
|
| 606 |
if (encoding) |
| 607 |
RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding)); |
| 608 |
else { |
| 609 |
STRLEN len; |
| 610 |
U8* s = (U8*)SvPV(sv, len); |
| 611 |
U8* converted; |
| 612 |
|
| 613 |
converted = bytes_to_utf8(s, &len); /* This allocs */ |
| 614 |
sv_setpvn(sv, (char *)converted, len); |
| 615 |
SvUTF8_on(sv); /* XXX Should we? */ |
| 616 |
Safefree(converted); /* ... so free it */ |
| 617 |
RETVAL = len; |
| 618 |
} |
| 619 |
} |
| 620 |
OUTPUT: |
| 621 |
RETVAL |
| 622 |
|
| 623 |
I32 |
| 624 |
_utf8_to_bytes(sv, ...) |
| 625 |
SV * sv |
| 626 |
CODE: |
| 627 |
{ |
| 628 |
SV * to = items > 1 ? ST(1) : Nullsv; |
| 629 |
SV * check = items > 2 ? ST(2) : Nullsv; |
| 630 |
|
| 631 |
if (to) { |
| 632 |
RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to)); |
| 633 |
} else { |
| 634 |
STRLEN len; |
| 635 |
U8 *s = (U8*)SvPV(sv, len); |
| 636 |
|
| 637 |
RETVAL = 0; |
| 638 |
if (SvTRUE(check)) { |
| 639 |
/* Must do things the slow way */ |
| 640 |
U8 *dest; |
| 641 |
/* We need a copy to pass to check() */ |
| 642 |
U8 *src = (U8*)savepv((char *)s); |
| 643 |
U8 *send = s + len; |
| 644 |
|
| 645 |
New(83, dest, len, U8); /* I think */ |
| 646 |
|
| 647 |
while (s < send) { |
| 648 |
if (*s < 0x80){ |
| 649 |
*dest++ = *s++; |
| 650 |
} else { |
| 651 |
STRLEN ulen; |
| 652 |
UV uv = *s++; |
| 653 |
|
| 654 |
/* Have to do it all ourselves because of error routine, |
| 655 |
aargh. */ |
| 656 |
if (!(uv & 0x40)){ goto failure; } |
| 657 |
if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; } |
| 658 |
else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; } |
| 659 |
else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; } |
| 660 |
else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; } |
| 661 |
else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; } |
| 662 |
else if (!(uv & 0x01)) { ulen = 7; uv = 0; } |
| 663 |
else { ulen = 13; uv = 0; } |
| 664 |
|
| 665 |
/* Note change to utf8.c variable naming, for variety */ |
| 666 |
while (ulen--) { |
| 667 |
if ((*s & 0xc0) != 0x80){ |
| 668 |
goto failure; |
| 669 |
} else { |
| 670 |
uv = (uv << 6) | (*s++ & 0x3f); |
| 671 |
} |
| 672 |
} |
| 673 |
if (uv > 256) { |
| 674 |
failure: |
| 675 |
call_failure(check, s, dest, src); |
| 676 |
/* Now what happens? */ |
| 677 |
} |
| 678 |
*dest++ = (U8)uv; |
| 679 |
} |
| 680 |
} |
| 681 |
} else { |
| 682 |
RETVAL = (utf8_to_bytes(s, &len) ? len : 0); |
| 683 |
} |
| 684 |
} |
| 685 |
} |
| 686 |
OUTPUT: |
| 687 |
RETVAL |
| 688 |
|
| 689 |
bool |
| 690 |
is_utf8(sv, check = 0) |
| 691 |
SV * sv |
| 692 |
int check |
| 693 |
CODE: |
| 694 |
{ |
| 695 |
if (SvGMAGICAL(sv)) /* it could be $1, for example */ |
| 696 |
sv = newSVsv(sv); /* GMAGIG will be done */ |
| 697 |
if (SvPOK(sv)) { |
| 698 |
RETVAL = SvUTF8(sv) ? TRUE : FALSE; |
| 699 |
if (RETVAL && |
| 700 |
check && |
| 701 |
!is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) |
| 702 |
RETVAL = FALSE; |
| 703 |
} else { |
| 704 |
RETVAL = FALSE; |
| 705 |
} |
| 706 |
if (sv != ST(0)) |
| 707 |
SvREFCNT_dec(sv); /* it was a temp copy */ |
| 708 |
} |
| 709 |
OUTPUT: |
| 710 |
RETVAL |
| 711 |
|
| 712 |
SV * |
| 713 |
_utf8_on(sv) |
| 714 |
SV * sv |
| 715 |
CODE: |
| 716 |
{ |
| 717 |
if (SvPOK(sv)) { |
| 718 |
SV *rsv = newSViv(SvUTF8(sv)); |
| 719 |
RETVAL = rsv; |
| 720 |
SvUTF8_on(sv); |
| 721 |
} else { |
| 722 |
RETVAL = &PL_sv_undef; |
| 723 |
} |
| 724 |
} |
| 725 |
OUTPUT: |
| 726 |
RETVAL |
| 727 |
|
| 728 |
SV * |
| 729 |
_utf8_off(sv) |
| 730 |
SV * sv |
| 731 |
CODE: |
| 732 |
{ |
| 733 |
if (SvPOK(sv)) { |
| 734 |
SV *rsv = newSViv(SvUTF8(sv)); |
| 735 |
RETVAL = rsv; |
| 736 |
SvUTF8_off(sv); |
| 737 |
} else { |
| 738 |
RETVAL = &PL_sv_undef; |
| 739 |
} |
| 740 |
} |
| 741 |
OUTPUT: |
| 742 |
RETVAL |
| 743 |
|
| 744 |
int |
| 745 |
DIE_ON_ERR() |
| 746 |
CODE: |
| 747 |
RETVAL = ENCODE_DIE_ON_ERR; |
| 748 |
OUTPUT: |
| 749 |
RETVAL |
| 750 |
|
| 751 |
int |
| 752 |
WARN_ON_ERR() |
| 753 |
CODE: |
| 754 |
RETVAL = ENCODE_WARN_ON_ERR; |
| 755 |
OUTPUT: |
| 756 |
RETVAL |
| 757 |
|
| 758 |
int |
| 759 |
LEAVE_SRC() |
| 760 |
CODE: |
| 761 |
RETVAL = ENCODE_LEAVE_SRC; |
| 762 |
OUTPUT: |
| 763 |
RETVAL |
| 764 |
|
| 765 |
int |
| 766 |
RETURN_ON_ERR() |
| 767 |
CODE: |
| 768 |
RETVAL = ENCODE_RETURN_ON_ERR; |
| 769 |
OUTPUT: |
| 770 |
RETVAL |
| 771 |
|
| 772 |
int |
| 773 |
PERLQQ() |
| 774 |
CODE: |
| 775 |
RETVAL = ENCODE_PERLQQ; |
| 776 |
OUTPUT: |
| 777 |
RETVAL |
| 778 |
|
| 779 |
int |
| 780 |
HTMLCREF() |
| 781 |
CODE: |
| 782 |
RETVAL = ENCODE_HTMLCREF; |
| 783 |
OUTPUT: |
| 784 |
RETVAL |
| 785 |
|
| 786 |
int |
| 787 |
XMLCREF() |
| 788 |
CODE: |
| 789 |
RETVAL = ENCODE_XMLCREF; |
| 790 |
OUTPUT: |
| 791 |
RETVAL |
| 792 |
|
| 793 |
int |
| 794 |
FB_DEFAULT() |
| 795 |
CODE: |
| 796 |
RETVAL = ENCODE_FB_DEFAULT; |
| 797 |
OUTPUT: |
| 798 |
RETVAL |
| 799 |
|
| 800 |
int |
| 801 |
FB_CROAK() |
| 802 |
CODE: |
| 803 |
RETVAL = ENCODE_FB_CROAK; |
| 804 |
OUTPUT: |
| 805 |
RETVAL |
| 806 |
|
| 807 |
int |
| 808 |
FB_QUIET() |
| 809 |
CODE: |
| 810 |
RETVAL = ENCODE_FB_QUIET; |
| 811 |
OUTPUT: |
| 812 |
RETVAL |
| 813 |
|
| 814 |
int |
| 815 |
FB_WARN() |
| 816 |
CODE: |
| 817 |
RETVAL = ENCODE_FB_WARN; |
| 818 |
OUTPUT: |
| 819 |
RETVAL |
| 820 |
|
| 821 |
int |
| 822 |
FB_PERLQQ() |
| 823 |
CODE: |
| 824 |
RETVAL = ENCODE_FB_PERLQQ; |
| 825 |
OUTPUT: |
| 826 |
RETVAL |
| 827 |
|
| 828 |
int |
| 829 |
FB_HTMLCREF() |
| 830 |
CODE: |
| 831 |
RETVAL = ENCODE_FB_HTMLCREF; |
| 832 |
OUTPUT: |
| 833 |
RETVAL |
| 834 |
|
| 835 |
int |
| 836 |
FB_XMLCREF() |
| 837 |
CODE: |
| 838 |
RETVAL = ENCODE_FB_XMLCREF; |
| 839 |
OUTPUT: |
| 840 |
RETVAL |
| 841 |
|
| 842 |
BOOT: |
| 843 |
{ |
| 844 |
#include "def_t.h" |
| 845 |
#include "def_t.exh" |
| 846 |
} |
