Commit | Line | Data |
85982a32 |
1 | /* |
0ab8f81e |
2 | $Id: Encode.xs,v 1.33 2002/04/22 03:43:05 dankogai Exp $ |
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" |
0ab8f81e |
11 | # define PERLIO_FILENAME "PerlIO/encoding.pm" |
aae85ceb |
12 | |
85982a32 |
13 | /* set 1 or more to profile. t/encoding.t dumps core because of |
14 | Perl_warner and PerlIO don't work well */ |
0ab8f81e |
15 | #define ENCODE_XS_PROFILE 0 |
39cf9a5e |
16 | |
85982a32 |
17 | /* set 0 to disable floating point to calculate buffer size for |
18 | encode_method(). 1 is recommended. 2 restores NI-S original */ |
0ab8f81e |
19 | #define ENCODE_XS_USEFP 1 |
39cf9a5e |
20 | |
fcf2db38 |
21 | #define UNIMPLEMENTED(x,y) y x (SV *sv, char *encoding) {dTHX; \ |
2f5768b8 |
22 | Perl_croak(aTHX_ "panic_unimplemented"); \ |
4a83738a |
23 | return (y)0; /* fool picky compilers */ \ |
87714904 |
24 | } |
85982a32 |
25 | /**/ |
7e9a885a |
26 | UNIMPLEMENTED(_encoded_utf8_to_bytes, I32) |
27 | UNIMPLEMENTED(_encoded_bytes_to_utf8, I32) |
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28 | |
b0b300a3 |
29 | void |
aa0053b7 |
30 | Encode_XSEncoding(pTHX_ encode_t * enc) |
2f2b4ff2 |
31 | { |
aa0053b7 |
32 | dSP; |
33 | HV *stash = gv_stashpv("Encode::XS", TRUE); |
34 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash); |
35 | int i = 0; |
36 | PUSHMARK(sp); |
37 | XPUSHs(sv); |
38 | while (enc->name[i]) { |
39 | const char *name = enc->name[i++]; |
40 | XPUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
41 | } |
42 | PUTBACK; |
43 | call_pv("Encode::define_encoding", G_DISCARD); |
44 | SvREFCNT_dec(sv); |
2f2b4ff2 |
45 | } |
46 | |
aa0053b7 |
47 | void |
48 | call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig) |
49 | { |
85982a32 |
50 | /* Exists for breakpointing */ |
aa0053b7 |
51 | } |
67e989fb |
52 | |
85982a32 |
53 | |
2f2b4ff2 |
54 | static SV * |
aa0053b7 |
55 | encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src, |
85982a32 |
56 | int check) |
2f2b4ff2 |
57 | { |
aa0053b7 |
58 | STRLEN slen; |
59 | U8 *s = (U8 *) SvPV(src, slen); |
3aececda |
60 | STRLEN tlen = slen; |
61 | STRLEN ddone = 0; |
62 | STRLEN sdone = 0; |
39cf9a5e |
63 | |
3c49ab08 |
64 | /* We allocate slen+1. |
85982a32 |
65 | PerlIO dumps core if this value is smaller than this. */ |
3c49ab08 |
66 | SV *dst = sv_2mortal(newSV(slen+1)); |
85982a32 |
67 | U8 *d = (U8 *)SvPVX(dst); |
68 | STRLEN dlen = SvLEN(dst)-1; |
69 | int code; |
70 | |
71 | if (!slen){ |
72 | SvCUR_set(dst, 0); |
73 | SvPOK_only(dst); |
74 | goto ENCODE_END; |
75 | } |
76 | |
77 | while (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check)) |
78 | { |
79 | SvCUR_set(dst, dlen+ddone); |
80 | SvPOK_only(dst); |
0b3236bb |
81 | |
85982a32 |
82 | if (code == ENCODE_FALLBACK || code == ENCODE_PARTIAL){ |
83 | break; |
84 | } |
85 | switch (code) { |
86 | case ENCODE_NOSPACE: |
87 | { |
88 | STRLEN more = 0; /* make sure you initialize! */ |
89 | STRLEN sleft; |
90 | sdone += slen; |
91 | ddone += dlen; |
92 | sleft = tlen - sdone; |
fcb875d4 |
93 | #if ENCODE_XS_PROFILE >= 2 |
85982a32 |
94 | Perl_warn(aTHX_ |
95 | "more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n", |
96 | more, sdone, sleft, SvLEN(dst)); |
fcb875d4 |
97 | #endif |
85982a32 |
98 | if (sdone != 0) { /* has src ever been processed ? */ |
39cf9a5e |
99 | #if ENCODE_XS_USEFP == 2 |
85982a32 |
100 | more = (1.0*tlen*SvLEN(dst)+sdone-1)/sdone |
101 | - SvLEN(dst); |
39cf9a5e |
102 | #elif ENCODE_XS_USEFP |
85982a32 |
103 | more = (1.0*SvLEN(dst)+1)/sdone * sleft; |
39cf9a5e |
104 | #else |
85982a32 |
105 | /* safe until SvLEN(dst) == MAX_INT/16 */ |
106 | more = (16*SvLEN(dst)+1)/sdone/16 * sleft; |
39cf9a5e |
107 | #endif |
39cf9a5e |
108 | } |
85982a32 |
109 | more += UTF8_MAXLEN; /* insurance policy */ |
110 | d = (U8 *) SvGROW(dst, SvLEN(dst) + more); |
111 | /* dst need to grow need MORE bytes! */ |
112 | if (ddone >= SvLEN(dst)) { |
113 | Perl_croak(aTHX_ "Destination couldn't be grown."); |
114 | } |
115 | dlen = SvLEN(dst)-ddone-1; |
116 | d += ddone; |
117 | s += slen; |
118 | slen = tlen-sdone; |
119 | continue; |
120 | } |
121 | case ENCODE_NOREP: |
122 | /* encoding */ |
0ab8f81e |
123 | if (dir == enc->f_utf8) { |
85982a32 |
124 | STRLEN clen; |
125 | UV ch = |
0ab8f81e |
126 | utf8n_to_uvuni(s+slen, (SvCUR(src)-slen), |
b0b300a3 |
127 | &clen, UTF8_ALLOW_ANY|UTF8_CHECK_ONLY); |
85982a32 |
128 | if (check & ENCODE_DIE_ON_ERR) { |
129 | Perl_croak( |
0ab8f81e |
130 | aTHX_ "\"\\N{U+%" UVxf "}\" does not map to %s, %d", |
85982a32 |
131 | ch, enc->name[0], __LINE__); |
132 | }else{ |
133 | if (check & ENCODE_RETURN_ON_ERR){ |
134 | if (check & ENCODE_WARN_ON_ERR){ |
135 | Perl_warner( |
136 | aTHX_ packWARN(WARN_UTF8), |
0ab8f81e |
137 | "\"\\N{U+%" UVxf "}\" does not map to %s", |
85982a32 |
138 | ch,enc->name[0]); |
139 | } |
140 | goto ENCODE_SET_SRC; |
141 | }else if (check & ENCODE_PERLQQ){ |
0ab8f81e |
142 | SV* perlqq = |
85982a32 |
143 | sv_2mortal(newSVpvf("\\x{%04x}", ch)); |
b2704119 |
144 | sdone += slen + clen; |
85982a32 |
145 | ddone += dlen + SvCUR(perlqq); |
146 | sv_catsv(dst, perlqq); |
0ab8f81e |
147 | } else { |
85982a32 |
148 | /* fallback char */ |
149 | sdone += slen + clen; |
0ab8f81e |
150 | ddone += dlen + enc->replen; |
151 | sv_catpvn(dst, (char*)enc->rep, enc->replen); |
b2704119 |
152 | } |
0ab8f81e |
153 | } |
b2704119 |
154 | } |
85982a32 |
155 | /* decoding */ |
0ab8f81e |
156 | else { |
85982a32 |
157 | if (check & ENCODE_DIE_ON_ERR){ |
158 | Perl_croak( |
159 | aTHX_ "%s \"\\x%02X\" does not map to Unicode (%d)", |
160 | enc->name[0], (U8) s[slen], code); |
161 | }else{ |
162 | if (check & ENCODE_RETURN_ON_ERR){ |
163 | if (check & ENCODE_WARN_ON_ERR){ |
164 | Perl_warner( |
165 | aTHX_ packWARN(WARN_UTF8), |
166 | "%s \"\\x%02X\" does not map to Unicode (%d)", |
167 | enc->name[0], (U8) s[slen], code); |
168 | } |
169 | goto ENCODE_SET_SRC; |
170 | }else if (check & ENCODE_PERLQQ){ |
0ab8f81e |
171 | SV* perlqq = |
b2704119 |
172 | sv_2mortal(newSVpvf("\\x%02X", s[slen])); |
85982a32 |
173 | sdone += slen + 1; |
174 | ddone += dlen + SvCUR(perlqq); |
175 | sv_catsv(dst, perlqq); |
176 | } else { |
177 | sdone += slen + 1; |
0ab8f81e |
178 | ddone += dlen + strlen(FBCHAR_UTF8); |
179 | sv_catpv(dst, FBCHAR_UTF8); |
85982a32 |
180 | } |
aa0053b7 |
181 | } |
b2704119 |
182 | } |
85982a32 |
183 | /* settle variables when fallback */ |
b0b300a3 |
184 | d = (U8 *)SvEND(dst); |
0ab8f81e |
185 | dlen = SvLEN(dst) - ddone - 1; |
186 | s = (U8*)SvPVX(src) + sdone; |
b2704119 |
187 | slen = tlen - sdone; |
188 | break; |
2f2b4ff2 |
189 | |
85982a32 |
190 | default: |
191 | Perl_croak(aTHX_ "Unexpected code %d converting %s %s", |
192 | code, (dir == enc->f_utf8) ? "to" : "from", |
193 | enc->name[0]); |
194 | return &PL_sv_undef; |
aa0053b7 |
195 | } |
85982a32 |
196 | } |
197 | ENCODE_SET_SRC: |
6d1c0808 |
198 | if (check && !(check & ENCODE_LEAVE_SRC)){ |
199 | sdone = SvCUR(src) - (slen+sdone); |
85982a32 |
200 | if (sdone) { |
201 | sv_setpvn(src, (char*)s+slen, sdone); |
aa0053b7 |
202 | } |
85982a32 |
203 | SvCUR_set(src, sdone); |
2f2b4ff2 |
204 | } |
85982a32 |
205 | /* warn("check = 0x%X, code = 0x%d\n", check, code); */ |
206 | if (code && !(check & ENCODE_RETURN_ON_ERR)) { |
207 | return &PL_sv_undef; |
2f2b4ff2 |
208 | } |
0ab8f81e |
209 | |
85982a32 |
210 | SvCUR_set(dst, dlen+ddone); |
211 | SvPOK_only(dst); |
0ab8f81e |
212 | |
39cf9a5e |
213 | #if ENCODE_XS_PROFILE |
214 | if (SvCUR(dst) > SvCUR(src)){ |
85982a32 |
215 | Perl_warn(aTHX_ |
216 | "SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n", |
217 | SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst), |
218 | (SvLEN(dst) - SvCUR(dst))*1.0/SvLEN(dst)*100.0); |
39cf9a5e |
219 | } |
3c49ab08 |
220 | #endif |
0ab8f81e |
221 | |
85982a32 |
222 | ENCODE_END: |
0b3236bb |
223 | *SvEND(dst) = '\0'; |
aa0053b7 |
224 | return dst; |
2f2b4ff2 |
225 | } |
226 | |
50d26985 |
227 | MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_ |
2f2b4ff2 |
228 | |
229 | PROTOTYPES: ENABLE |
230 | |
231 | void |
0a95303c |
232 | Method_name(obj) |
233 | SV * obj |
234 | CODE: |
85982a32 |
235 | { |
236 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
237 | ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0]))); |
238 | XSRETURN(1); |
239 | } |
0a95303c |
240 | |
241 | void |
b2704119 |
242 | Method_decode(obj,src,check = 0) |
2f2b4ff2 |
243 | SV * obj |
244 | SV * src |
b2704119 |
245 | int check |
2f2b4ff2 |
246 | CODE: |
aae85ceb |
247 | { |
85982a32 |
248 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
249 | ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check); |
250 | SvUTF8_on(ST(0)); |
aae85ceb |
251 | XSRETURN(1); |
252 | } |
253 | |
254 | void |
85982a32 |
255 | Method_encode(obj,src,check = 0) |
aae85ceb |
256 | SV * obj |
85982a32 |
257 | SV * src |
258 | int check |
aae85ceb |
259 | CODE: |
260 | { |
85982a32 |
261 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
262 | sv_utf8_upgrade(src); |
263 | ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check); |
aae85ceb |
264 | XSRETURN(1); |
265 | } |
266 | |
0ab8f81e |
267 | void |
268 | Method_needs_lines(obj) |
269 | SV * obj |
270 | CODE: |
271 | { |
272 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
273 | ST(0) = &PL_sv_no; |
274 | XSRETURN(1); |
275 | } |
276 | |
277 | void |
278 | Method_perlio_ok(obj) |
279 | SV * obj |
280 | CODE: |
281 | { |
282 | encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); |
283 | if (hv_exists(get_hv("INC", 0), |
284 | PERLIO_FILENAME, strlen(PERLIO_FILENAME))) |
285 | { |
286 | ST(0) = &PL_sv_yes; |
287 | }else{ |
288 | ST(0) = &PL_sv_no; |
289 | } |
290 | XSRETURN(1); |
291 | } |
292 | |
67e989fb |
293 | MODULE = Encode PACKAGE = Encode |
2c674647 |
294 | |
295 | PROTOTYPES: ENABLE |
296 | |
67e989fb |
297 | I32 |
2c674647 |
298 | _bytes_to_utf8(sv, ...) |
85982a32 |
299 | SV * sv |
300 | CODE: |
301 | { |
302 | SV * encoding = items == 2 ? ST(1) : Nullsv; |
0ab8f81e |
303 | |
85982a32 |
304 | if (encoding) |
305 | RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding)); |
306 | else { |
307 | STRLEN len; |
308 | U8* s = (U8*)SvPV(sv, len); |
309 | U8* converted; |
310 | |
311 | converted = bytes_to_utf8(s, &len); /* This allocs */ |
312 | sv_setpvn(sv, (char *)converted, len); |
313 | SvUTF8_on(sv); /* XXX Should we? */ |
314 | Safefree(converted); /* ... so free it */ |
315 | RETVAL = len; |
316 | } |
317 | } |
318 | OUTPUT: |
319 | RETVAL |
2c674647 |
320 | |
67e989fb |
321 | I32 |
2c674647 |
322 | _utf8_to_bytes(sv, ...) |
85982a32 |
323 | SV * sv |
324 | CODE: |
325 | { |
326 | SV * to = items > 1 ? ST(1) : Nullsv; |
327 | SV * check = items > 2 ? ST(2) : Nullsv; |
328 | |
329 | if (to) { |
330 | RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to)); |
331 | } else { |
332 | STRLEN len; |
333 | U8 *s = (U8*)SvPV(sv, len); |
334 | |
335 | RETVAL = 0; |
336 | if (SvTRUE(check)) { |
337 | /* Must do things the slow way */ |
338 | U8 *dest; |
339 | /* We need a copy to pass to check() */ |
0ab8f81e |
340 | U8 *src = (U8*)savepv((char *)s); |
85982a32 |
341 | U8 *send = s + len; |
342 | |
343 | New(83, dest, len, U8); /* I think */ |
344 | |
345 | while (s < send) { |
346 | if (*s < 0x80){ |
347 | *dest++ = *s++; |
348 | } else { |
349 | STRLEN ulen; |
350 | UV uv = *s++; |
351 | |
352 | /* Have to do it all ourselves because of error routine, |
353 | aargh. */ |
354 | if (!(uv & 0x40)){ goto failure; } |
355 | if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; } |
356 | else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; } |
357 | else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; } |
358 | else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; } |
359 | else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; } |
360 | else if (!(uv & 0x01)) { ulen = 7; uv = 0; } |
361 | else { ulen = 13; uv = 0; } |
87714904 |
362 | |
85982a32 |
363 | /* Note change to utf8.c variable naming, for variety */ |
364 | while (ulen--) { |
0ab8f81e |
365 | if ((*s & 0xc0) != 0x80){ |
366 | goto failure; |
85982a32 |
367 | } else { |
368 | uv = (uv << 6) | (*s++ & 0x3f); |
369 | } |
87714904 |
370 | } |
67e989fb |
371 | if (uv > 256) { |
372 | failure: |
85982a32 |
373 | call_failure(check, s, dest, src); |
374 | /* Now what happens? */ |
67e989fb |
375 | } |
376 | *dest++ = (U8)uv; |
85982a32 |
377 | } |
378 | } |
379 | } else { |
380 | RETVAL = (utf8_to_bytes(s, &len) ? len : 0); |
2c674647 |
381 | } |
85982a32 |
382 | } |
383 | } |
384 | OUTPUT: |
385 | RETVAL |
2c674647 |
386 | |
2c674647 |
387 | bool |
b2704119 |
388 | is_utf8(sv, check = 0) |
4411f3b6 |
389 | SV * sv |
b2704119 |
390 | int check |
85982a32 |
391 | CODE: |
392 | { |
393 | if (SvGMAGICAL(sv)) /* it could be $1, for example */ |
394 | sv = newSVsv(sv); /* GMAGIG will be done */ |
395 | if (SvPOK(sv)) { |
396 | RETVAL = SvUTF8(sv) ? TRUE : FALSE; |
397 | if (RETVAL && |
398 | check && |
399 | !is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) |
2c674647 |
400 | RETVAL = FALSE; |
85982a32 |
401 | } else { |
402 | RETVAL = FALSE; |
403 | } |
404 | if (sv != ST(0)) |
405 | SvREFCNT_dec(sv); /* it was a temp copy */ |
406 | } |
407 | OUTPUT: |
408 | RETVAL |
2c674647 |
409 | |
410 | SV * |
4411f3b6 |
411 | _utf8_on(sv) |
85982a32 |
412 | SV * sv |
413 | CODE: |
414 | { |
415 | if (SvPOK(sv)) { |
416 | SV *rsv = newSViv(SvUTF8(sv)); |
417 | RETVAL = rsv; |
418 | SvUTF8_on(sv); |
419 | } else { |
420 | RETVAL = &PL_sv_undef; |
421 | } |
422 | } |
423 | OUTPUT: |
424 | RETVAL |
2c674647 |
425 | |
426 | SV * |
4411f3b6 |
427 | _utf8_off(sv) |
85982a32 |
428 | SV * sv |
429 | CODE: |
430 | { |
431 | if (SvPOK(sv)) { |
432 | SV *rsv = newSViv(SvUTF8(sv)); |
433 | RETVAL = rsv; |
434 | SvUTF8_off(sv); |
435 | } else { |
436 | RETVAL = &PL_sv_undef; |
437 | } |
438 | } |
439 | OUTPUT: |
440 | RETVAL |
441 | |
442 | PROTOTYPES: DISABLE |
443 | |
444 | |
445 | int |
446 | DIE_ON_ERR() |
447 | CODE: |
448 | RETVAL = ENCODE_DIE_ON_ERR; |
449 | OUTPUT: |
450 | RETVAL |
451 | |
0ab8f81e |
452 | int |
85982a32 |
453 | WARN_ON_ERR() |
454 | CODE: |
455 | RETVAL = ENCODE_WARN_ON_ERR; |
456 | OUTPUT: |
457 | RETVAL |
458 | |
459 | int |
460 | LEAVE_SRC() |
461 | CODE: |
462 | RETVAL = ENCODE_LEAVE_SRC; |
463 | OUTPUT: |
464 | RETVAL |
465 | |
466 | int |
467 | RETURN_ON_ERR() |
468 | CODE: |
469 | RETVAL = ENCODE_RETURN_ON_ERR; |
470 | OUTPUT: |
471 | RETVAL |
472 | |
473 | int |
474 | PERLQQ() |
475 | CODE: |
476 | RETVAL = ENCODE_PERLQQ; |
477 | OUTPUT: |
478 | RETVAL |
479 | |
480 | int |
481 | FB_DEFAULT() |
482 | CODE: |
483 | RETVAL = ENCODE_FB_DEFAULT; |
484 | OUTPUT: |
485 | RETVAL |
486 | |
487 | int |
488 | FB_CROAK() |
489 | CODE: |
490 | RETVAL = ENCODE_FB_CROAK; |
491 | OUTPUT: |
492 | RETVAL |
493 | |
494 | int |
495 | FB_QUIET() |
496 | CODE: |
497 | RETVAL = ENCODE_FB_QUIET; |
498 | OUTPUT: |
499 | RETVAL |
500 | |
501 | int |
502 | FB_WARN() |
503 | CODE: |
504 | RETVAL = ENCODE_FB_WARN; |
505 | OUTPUT: |
506 | RETVAL |
507 | |
508 | int |
509 | FB_PERLQQ() |
510 | CODE: |
511 | RETVAL = ENCODE_FB_PERLQQ; |
512 | OUTPUT: |
513 | RETVAL |
2c674647 |
514 | |
33af2bc7 |
515 | BOOT: |
516 | { |
85982a32 |
517 | #include "def_t.h" |
e7cbefb8 |
518 | #include "def_t.exh" |
33af2bc7 |
519 | } |