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a0ed51b3 |
1 | /* utf8.c |
2 | * |
3818b22b |
3 | * Copyright (c) 1998-2000, Larry Wall |
a0ed51b3 |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
8 | */ |
9 | |
10 | /* |
11 | * 'What a fix!' said Sam. 'That's the one place in all the lands we've ever |
12 | * heard of that we don't want to see any closer; and that's the one place |
13 | * we're trying to get to! And that's just where we can't get, nohow.' |
14 | * |
15 | * 'Well do I understand your speech,' he answered in the same language; |
16 | * 'yet few strangers do so. Why then do you not speak in the Common Tongue, |
17 | * as is the custom in the West, if you wish to be answered?' |
18 | * |
19 | * ...the travellers perceived that the floor was paved with stones of many |
20 | * hues; branching runes and strange devices intertwined beneath their feet. |
21 | */ |
22 | |
23 | #include "EXTERN.h" |
864dbfa3 |
24 | #define PERL_IN_UTF8_C |
a0ed51b3 |
25 | #include "perl.h" |
26 | |
27 | /* Unicode support */ |
28 | |
dfe13c55 |
29 | U8 * |
864dbfa3 |
30 | Perl_uv_to_utf8(pTHX_ U8 *d, UV uv) |
a0ed51b3 |
31 | { |
32 | if (uv < 0x80) { |
33 | *d++ = uv; |
34 | return d; |
35 | } |
36 | if (uv < 0x800) { |
37 | *d++ = (( uv >> 6) | 0xc0); |
38 | *d++ = (( uv & 0x3f) | 0x80); |
39 | return d; |
40 | } |
41 | if (uv < 0x10000) { |
42 | *d++ = (( uv >> 12) | 0xe0); |
43 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
44 | *d++ = (( uv & 0x3f) | 0x80); |
45 | return d; |
46 | } |
47 | if (uv < 0x200000) { |
48 | *d++ = (( uv >> 18) | 0xf0); |
49 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
50 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
51 | *d++ = (( uv & 0x3f) | 0x80); |
52 | return d; |
53 | } |
54 | if (uv < 0x4000000) { |
55 | *d++ = (( uv >> 24) | 0xf8); |
56 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
57 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
58 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
59 | *d++ = (( uv & 0x3f) | 0x80); |
60 | return d; |
61 | } |
62 | if (uv < 0x80000000) { |
63 | *d++ = (( uv >> 30) | 0xfc); |
64 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
65 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
66 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
67 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
68 | *d++ = (( uv & 0x3f) | 0x80); |
69 | return d; |
70 | } |
6b8eaf93 |
71 | #ifdef HAS_QUAD |
628e1a40 |
72 | if (uv < 0x1000000000LL) |
a0ed51b3 |
73 | #endif |
74 | { |
75 | *d++ = 0xfe; /* Can't match U+FEFF! */ |
76 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
77 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
78 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
79 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
80 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
81 | *d++ = (( uv & 0x3f) | 0x80); |
82 | return d; |
83 | } |
6b8eaf93 |
84 | #ifdef HAS_QUAD |
a0ed51b3 |
85 | { |
86 | *d++ = 0xff; /* Can't match U+FFFE! */ |
3c77ea2b |
87 | *d++ = 0x80; /* 6 Reserved bits */ |
88 | *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */ |
89 | *d++ = (((uv >> 54) & 0x3f) | 0x80); |
90 | *d++ = (((uv >> 48) & 0x3f) | 0x80); |
91 | *d++ = (((uv >> 42) & 0x3f) | 0x80); |
a0ed51b3 |
92 | *d++ = (((uv >> 36) & 0x3f) | 0x80); |
93 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
94 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
95 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
96 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
97 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
98 | *d++ = (( uv & 0x3f) | 0x80); |
99 | return d; |
100 | } |
101 | #endif |
102 | } |
103 | |
ee8c7f54 |
104 | /* Tests if some arbitrary number of bytes begins in a valid UTF-8 character. |
105 | * The actual number of bytes in the UTF-8 character will be returned if it |
106 | * is valid, otherwise 0. */ |
107 | int |
108 | Perl_is_utf8_char(pTHX_ U8 *s) |
109 | { |
110 | U8 u = *s; |
111 | int slen, len; |
112 | |
113 | if (!(u & 0x80)) |
114 | return 1; |
115 | |
116 | if (!(u & 0x40)) |
117 | return 0; |
118 | |
119 | if (!(u & 0x20)) { len = 2; } |
120 | else if (!(u & 0x10)) { len = 3; } |
121 | else if (!(u & 0x08)) { len = 4; } |
122 | else if (!(u & 0x04)) { len = 5; } |
123 | else if (!(u & 0x02)) { len = 6; } |
124 | else if (!(u & 0x01)) { len = 7; } |
125 | else { len = 13; } /* whoa! */ |
126 | |
127 | slen = len - 1; |
128 | s++; |
129 | while (slen--) { |
130 | if ((*s & 0xc0) != 0x80) |
131 | return 0; |
132 | s++; |
133 | } |
134 | return len; |
135 | } |
136 | |
a0ed51b3 |
137 | UV |
864dbfa3 |
138 | Perl_utf8_to_uv(pTHX_ U8* s, I32* retlen) |
a0ed51b3 |
139 | { |
140 | UV uv = *s; |
141 | int len; |
142 | if (!(uv & 0x80)) { |
143 | if (retlen) |
144 | *retlen = 1; |
145 | return *s; |
146 | } |
147 | if (!(uv & 0x40)) { |
0453d815 |
148 | dTHR; |
149 | if (ckWARN_d(WARN_UTF8)) |
150 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character"); |
a0ed51b3 |
151 | if (retlen) |
152 | *retlen = 1; |
153 | return *s; |
154 | } |
155 | |
156 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
157 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } |
158 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } |
159 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } |
160 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
3c77ea2b |
161 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
162 | else { len = 13; uv = 0; } /* whoa! */ |
a0ed51b3 |
163 | |
164 | if (retlen) |
165 | *retlen = len; |
166 | --len; |
167 | s++; |
168 | while (len--) { |
169 | if ((*s & 0xc0) != 0x80) { |
0453d815 |
170 | dTHR; |
171 | if (ckWARN_d(WARN_UTF8)) |
172 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character"); |
a0ed51b3 |
173 | if (retlen) |
174 | *retlen -= len + 1; |
175 | return 0xfffd; |
176 | } |
177 | else |
178 | uv = (uv << 6) | (*s++ & 0x3f); |
179 | } |
180 | return uv; |
181 | } |
182 | |
183 | /* utf8_distance(a,b) is intended to be a - b in pointer arithmetic */ |
184 | |
185 | I32 |
864dbfa3 |
186 | Perl_utf8_distance(pTHX_ U8 *a, U8 *b) |
a0ed51b3 |
187 | { |
188 | I32 off = 0; |
189 | if (a < b) { |
190 | while (a < b) { |
191 | a += UTF8SKIP(a); |
192 | off--; |
193 | } |
194 | } |
195 | else { |
196 | while (b < a) { |
197 | b += UTF8SKIP(b); |
198 | off++; |
199 | } |
200 | } |
201 | return off; |
202 | } |
203 | |
204 | /* WARNING: do not use the following unless you *know* off is within bounds */ |
205 | |
206 | U8 * |
864dbfa3 |
207 | Perl_utf8_hop(pTHX_ U8 *s, I32 off) |
a0ed51b3 |
208 | { |
209 | if (off >= 0) { |
210 | while (off--) |
211 | s += UTF8SKIP(s); |
212 | } |
213 | else { |
214 | while (off++) { |
215 | s--; |
216 | if (*s & 0x80) { |
217 | while ((*s & 0xc0) == 0x80) |
218 | s--; |
219 | } |
220 | } |
221 | } |
222 | return s; |
223 | } |
224 | |
225 | /* XXX NOTHING CALLS THE FOLLOWING TWO ROUTINES YET!!! */ |
226 | /* |
227 | * Convert native or reversed UTF-16 to UTF-8. |
228 | * |
229 | * Destination must be pre-extended to 3/2 source. Do not use in-place. |
230 | * We optimize for native, for obvious reasons. */ |
231 | |
232 | U8* |
864dbfa3 |
233 | Perl_utf16_to_utf8(pTHX_ U16* p, U8* d, I32 bytelen) |
a0ed51b3 |
234 | { |
235 | U16* pend = p + bytelen / 2; |
236 | while (p < pend) { |
237 | UV uv = *p++; |
238 | if (uv < 0x80) { |
239 | *d++ = uv; |
240 | continue; |
241 | } |
242 | if (uv < 0x800) { |
243 | *d++ = (( uv >> 6) | 0xc0); |
244 | *d++ = (( uv & 0x3f) | 0x80); |
245 | continue; |
246 | } |
247 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ |
0453d815 |
248 | dTHR; |
a0ed51b3 |
249 | int low = *p++; |
250 | if (low < 0xdc00 || low >= 0xdfff) { |
0453d815 |
251 | if (ckWARN_d(WARN_UTF8)) |
252 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-16 surrogate"); |
a0ed51b3 |
253 | p--; |
254 | uv = 0xfffd; |
255 | } |
256 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
257 | } |
258 | if (uv < 0x10000) { |
259 | *d++ = (( uv >> 12) | 0xe0); |
260 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
261 | *d++ = (( uv & 0x3f) | 0x80); |
262 | continue; |
263 | } |
264 | else { |
265 | *d++ = (( uv >> 18) | 0xf0); |
266 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
267 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
268 | *d++ = (( uv & 0x3f) | 0x80); |
269 | continue; |
270 | } |
271 | } |
272 | return d; |
273 | } |
274 | |
275 | /* Note: this one is slightly destructive of the source. */ |
276 | |
277 | U8* |
864dbfa3 |
278 | Perl_utf16_to_utf8_reversed(pTHX_ U16* p, U8* d, I32 bytelen) |
a0ed51b3 |
279 | { |
280 | U8* s = (U8*)p; |
281 | U8* send = s + bytelen; |
282 | while (s < send) { |
283 | U8 tmp = s[0]; |
284 | s[0] = s[1]; |
285 | s[1] = tmp; |
286 | s += 2; |
287 | } |
288 | return utf16_to_utf8(p, d, bytelen); |
289 | } |
290 | |
291 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ |
292 | |
293 | bool |
864dbfa3 |
294 | Perl_is_uni_alnum(pTHX_ U32 c) |
a0ed51b3 |
295 | { |
aa6ffa16 |
296 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
297 | uv_to_utf8(tmpbuf, (UV)c); |
298 | return is_utf8_alnum(tmpbuf); |
299 | } |
300 | |
301 | bool |
b8c5462f |
302 | Perl_is_uni_alnumc(pTHX_ U32 c) |
303 | { |
aa6ffa16 |
304 | U8 tmpbuf[UTF8_MAXLEN]; |
b8c5462f |
305 | uv_to_utf8(tmpbuf, (UV)c); |
306 | return is_utf8_alnumc(tmpbuf); |
307 | } |
308 | |
309 | bool |
864dbfa3 |
310 | Perl_is_uni_idfirst(pTHX_ U32 c) |
a0ed51b3 |
311 | { |
aa6ffa16 |
312 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
313 | uv_to_utf8(tmpbuf, (UV)c); |
314 | return is_utf8_idfirst(tmpbuf); |
315 | } |
316 | |
317 | bool |
864dbfa3 |
318 | Perl_is_uni_alpha(pTHX_ U32 c) |
a0ed51b3 |
319 | { |
aa6ffa16 |
320 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
321 | uv_to_utf8(tmpbuf, (UV)c); |
322 | return is_utf8_alpha(tmpbuf); |
323 | } |
324 | |
325 | bool |
4d61ec05 |
326 | Perl_is_uni_ascii(pTHX_ U32 c) |
327 | { |
aa6ffa16 |
328 | U8 tmpbuf[UTF8_MAXLEN]; |
4d61ec05 |
329 | uv_to_utf8(tmpbuf, (UV)c); |
330 | return is_utf8_ascii(tmpbuf); |
331 | } |
332 | |
333 | bool |
864dbfa3 |
334 | Perl_is_uni_space(pTHX_ U32 c) |
a0ed51b3 |
335 | { |
aa6ffa16 |
336 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
337 | uv_to_utf8(tmpbuf, (UV)c); |
338 | return is_utf8_space(tmpbuf); |
339 | } |
340 | |
341 | bool |
864dbfa3 |
342 | Perl_is_uni_digit(pTHX_ U32 c) |
a0ed51b3 |
343 | { |
aa6ffa16 |
344 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
345 | uv_to_utf8(tmpbuf, (UV)c); |
346 | return is_utf8_digit(tmpbuf); |
347 | } |
348 | |
349 | bool |
864dbfa3 |
350 | Perl_is_uni_upper(pTHX_ U32 c) |
a0ed51b3 |
351 | { |
aa6ffa16 |
352 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
353 | uv_to_utf8(tmpbuf, (UV)c); |
354 | return is_utf8_upper(tmpbuf); |
355 | } |
356 | |
357 | bool |
864dbfa3 |
358 | Perl_is_uni_lower(pTHX_ U32 c) |
a0ed51b3 |
359 | { |
aa6ffa16 |
360 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
361 | uv_to_utf8(tmpbuf, (UV)c); |
362 | return is_utf8_lower(tmpbuf); |
363 | } |
364 | |
365 | bool |
b8c5462f |
366 | Perl_is_uni_cntrl(pTHX_ U32 c) |
367 | { |
aa6ffa16 |
368 | U8 tmpbuf[UTF8_MAXLEN]; |
b8c5462f |
369 | uv_to_utf8(tmpbuf, (UV)c); |
370 | return is_utf8_cntrl(tmpbuf); |
371 | } |
372 | |
373 | bool |
374 | Perl_is_uni_graph(pTHX_ U32 c) |
375 | { |
aa6ffa16 |
376 | U8 tmpbuf[UTF8_MAXLEN]; |
b8c5462f |
377 | uv_to_utf8(tmpbuf, (UV)c); |
378 | return is_utf8_graph(tmpbuf); |
379 | } |
380 | |
381 | bool |
864dbfa3 |
382 | Perl_is_uni_print(pTHX_ U32 c) |
a0ed51b3 |
383 | { |
aa6ffa16 |
384 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
385 | uv_to_utf8(tmpbuf, (UV)c); |
386 | return is_utf8_print(tmpbuf); |
387 | } |
388 | |
b8c5462f |
389 | bool |
f248d071 |
390 | Perl_is_uni_punct(pTHX_ U32 c) |
b8c5462f |
391 | { |
aa6ffa16 |
392 | U8 tmpbuf[UTF8_MAXLEN]; |
b8c5462f |
393 | uv_to_utf8(tmpbuf, (UV)c); |
394 | return is_utf8_punct(tmpbuf); |
395 | } |
396 | |
4d61ec05 |
397 | bool |
398 | Perl_is_uni_xdigit(pTHX_ U32 c) |
399 | { |
aa6ffa16 |
400 | U8 tmpbuf[UTF8_MAXLEN]; |
4d61ec05 |
401 | uv_to_utf8(tmpbuf, (UV)c); |
402 | return is_utf8_xdigit(tmpbuf); |
403 | } |
404 | |
a0ed51b3 |
405 | U32 |
864dbfa3 |
406 | Perl_to_uni_upper(pTHX_ U32 c) |
a0ed51b3 |
407 | { |
aa6ffa16 |
408 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
409 | uv_to_utf8(tmpbuf, (UV)c); |
410 | return to_utf8_upper(tmpbuf); |
411 | } |
412 | |
413 | U32 |
864dbfa3 |
414 | Perl_to_uni_title(pTHX_ U32 c) |
a0ed51b3 |
415 | { |
aa6ffa16 |
416 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
417 | uv_to_utf8(tmpbuf, (UV)c); |
418 | return to_utf8_title(tmpbuf); |
419 | } |
420 | |
421 | U32 |
864dbfa3 |
422 | Perl_to_uni_lower(pTHX_ U32 c) |
a0ed51b3 |
423 | { |
aa6ffa16 |
424 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 |
425 | uv_to_utf8(tmpbuf, (UV)c); |
426 | return to_utf8_lower(tmpbuf); |
427 | } |
428 | |
429 | /* for now these all assume no locale info available for Unicode > 255 */ |
430 | |
431 | bool |
864dbfa3 |
432 | Perl_is_uni_alnum_lc(pTHX_ U32 c) |
a0ed51b3 |
433 | { |
434 | return is_uni_alnum(c); /* XXX no locale support yet */ |
435 | } |
436 | |
437 | bool |
b8c5462f |
438 | Perl_is_uni_alnumc_lc(pTHX_ U32 c) |
439 | { |
440 | return is_uni_alnumc(c); /* XXX no locale support yet */ |
441 | } |
442 | |
443 | bool |
864dbfa3 |
444 | Perl_is_uni_idfirst_lc(pTHX_ U32 c) |
a0ed51b3 |
445 | { |
446 | return is_uni_idfirst(c); /* XXX no locale support yet */ |
447 | } |
448 | |
449 | bool |
864dbfa3 |
450 | Perl_is_uni_alpha_lc(pTHX_ U32 c) |
a0ed51b3 |
451 | { |
452 | return is_uni_alpha(c); /* XXX no locale support yet */ |
453 | } |
454 | |
455 | bool |
4d61ec05 |
456 | Perl_is_uni_ascii_lc(pTHX_ U32 c) |
457 | { |
458 | return is_uni_ascii(c); /* XXX no locale support yet */ |
459 | } |
460 | |
461 | bool |
864dbfa3 |
462 | Perl_is_uni_space_lc(pTHX_ U32 c) |
a0ed51b3 |
463 | { |
464 | return is_uni_space(c); /* XXX no locale support yet */ |
465 | } |
466 | |
467 | bool |
864dbfa3 |
468 | Perl_is_uni_digit_lc(pTHX_ U32 c) |
a0ed51b3 |
469 | { |
470 | return is_uni_digit(c); /* XXX no locale support yet */ |
471 | } |
472 | |
473 | bool |
864dbfa3 |
474 | Perl_is_uni_upper_lc(pTHX_ U32 c) |
a0ed51b3 |
475 | { |
476 | return is_uni_upper(c); /* XXX no locale support yet */ |
477 | } |
478 | |
479 | bool |
864dbfa3 |
480 | Perl_is_uni_lower_lc(pTHX_ U32 c) |
a0ed51b3 |
481 | { |
482 | return is_uni_lower(c); /* XXX no locale support yet */ |
483 | } |
484 | |
485 | bool |
b8c5462f |
486 | Perl_is_uni_cntrl_lc(pTHX_ U32 c) |
487 | { |
488 | return is_uni_cntrl(c); /* XXX no locale support yet */ |
489 | } |
490 | |
491 | bool |
492 | Perl_is_uni_graph_lc(pTHX_ U32 c) |
493 | { |
494 | return is_uni_graph(c); /* XXX no locale support yet */ |
495 | } |
496 | |
497 | bool |
864dbfa3 |
498 | Perl_is_uni_print_lc(pTHX_ U32 c) |
a0ed51b3 |
499 | { |
500 | return is_uni_print(c); /* XXX no locale support yet */ |
501 | } |
502 | |
b8c5462f |
503 | bool |
504 | Perl_is_uni_punct_lc(pTHX_ U32 c) |
505 | { |
506 | return is_uni_punct(c); /* XXX no locale support yet */ |
507 | } |
508 | |
4d61ec05 |
509 | bool |
510 | Perl_is_uni_xdigit_lc(pTHX_ U32 c) |
511 | { |
512 | return is_uni_xdigit(c); /* XXX no locale support yet */ |
513 | } |
514 | |
a0ed51b3 |
515 | U32 |
864dbfa3 |
516 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
a0ed51b3 |
517 | { |
518 | return to_uni_upper(c); /* XXX no locale support yet */ |
519 | } |
520 | |
521 | U32 |
864dbfa3 |
522 | Perl_to_uni_title_lc(pTHX_ U32 c) |
a0ed51b3 |
523 | { |
524 | return to_uni_title(c); /* XXX no locale support yet */ |
525 | } |
526 | |
527 | U32 |
864dbfa3 |
528 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
a0ed51b3 |
529 | { |
530 | return to_uni_lower(c); /* XXX no locale support yet */ |
531 | } |
532 | |
a0ed51b3 |
533 | bool |
864dbfa3 |
534 | Perl_is_utf8_alnum(pTHX_ U8 *p) |
a0ed51b3 |
535 | { |
ee8c7f54 |
536 | if (!is_utf8_char(p)) |
537 | return FALSE; |
a0ed51b3 |
538 | if (!PL_utf8_alnum) |
e24b16f9 |
539 | PL_utf8_alnum = swash_init("utf8", "IsAlnum", &PL_sv_undef, 0, 0); |
a0ed51b3 |
540 | return swash_fetch(PL_utf8_alnum, p); |
541 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ |
542 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
543 | if (!PL_utf8_alnum) |
544 | PL_utf8_alnum = swash_init("utf8", "", |
545 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
546 | return swash_fetch(PL_utf8_alnum, p); |
547 | #endif |
548 | } |
549 | |
550 | bool |
b8c5462f |
551 | Perl_is_utf8_alnumc(pTHX_ U8 *p) |
552 | { |
ee8c7f54 |
553 | if (!is_utf8_char(p)) |
554 | return FALSE; |
b8c5462f |
555 | if (!PL_utf8_alnum) |
556 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); |
557 | return swash_fetch(PL_utf8_alnum, p); |
558 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ |
559 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
560 | if (!PL_utf8_alnum) |
561 | PL_utf8_alnum = swash_init("utf8", "", |
562 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
563 | return swash_fetch(PL_utf8_alnum, p); |
564 | #endif |
565 | } |
566 | |
567 | bool |
864dbfa3 |
568 | Perl_is_utf8_idfirst(pTHX_ U8 *p) |
a0ed51b3 |
569 | { |
570 | return *p == '_' || is_utf8_alpha(p); |
571 | } |
572 | |
573 | bool |
864dbfa3 |
574 | Perl_is_utf8_alpha(pTHX_ U8 *p) |
a0ed51b3 |
575 | { |
ee8c7f54 |
576 | if (!is_utf8_char(p)) |
577 | return FALSE; |
a0ed51b3 |
578 | if (!PL_utf8_alpha) |
e24b16f9 |
579 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
a0ed51b3 |
580 | return swash_fetch(PL_utf8_alpha, p); |
581 | } |
582 | |
583 | bool |
b8c5462f |
584 | Perl_is_utf8_ascii(pTHX_ U8 *p) |
585 | { |
ee8c7f54 |
586 | if (!is_utf8_char(p)) |
587 | return FALSE; |
b8c5462f |
588 | if (!PL_utf8_ascii) |
589 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); |
590 | return swash_fetch(PL_utf8_ascii, p); |
591 | } |
592 | |
593 | bool |
864dbfa3 |
594 | Perl_is_utf8_space(pTHX_ U8 *p) |
a0ed51b3 |
595 | { |
ee8c7f54 |
596 | if (!is_utf8_char(p)) |
597 | return FALSE; |
a0ed51b3 |
598 | if (!PL_utf8_space) |
e24b16f9 |
599 | PL_utf8_space = swash_init("utf8", "IsSpace", &PL_sv_undef, 0, 0); |
a0ed51b3 |
600 | return swash_fetch(PL_utf8_space, p); |
601 | } |
602 | |
603 | bool |
864dbfa3 |
604 | Perl_is_utf8_digit(pTHX_ U8 *p) |
a0ed51b3 |
605 | { |
ee8c7f54 |
606 | if (!is_utf8_char(p)) |
607 | return FALSE; |
a0ed51b3 |
608 | if (!PL_utf8_digit) |
e24b16f9 |
609 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
a0ed51b3 |
610 | return swash_fetch(PL_utf8_digit, p); |
611 | } |
612 | |
613 | bool |
864dbfa3 |
614 | Perl_is_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 |
615 | { |
ee8c7f54 |
616 | if (!is_utf8_char(p)) |
617 | return FALSE; |
a0ed51b3 |
618 | if (!PL_utf8_upper) |
e24b16f9 |
619 | PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0); |
a0ed51b3 |
620 | return swash_fetch(PL_utf8_upper, p); |
621 | } |
622 | |
623 | bool |
864dbfa3 |
624 | Perl_is_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 |
625 | { |
ee8c7f54 |
626 | if (!is_utf8_char(p)) |
627 | return FALSE; |
a0ed51b3 |
628 | if (!PL_utf8_lower) |
e24b16f9 |
629 | PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0); |
a0ed51b3 |
630 | return swash_fetch(PL_utf8_lower, p); |
631 | } |
632 | |
633 | bool |
b8c5462f |
634 | Perl_is_utf8_cntrl(pTHX_ U8 *p) |
635 | { |
ee8c7f54 |
636 | if (!is_utf8_char(p)) |
637 | return FALSE; |
b8c5462f |
638 | if (!PL_utf8_cntrl) |
639 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); |
640 | return swash_fetch(PL_utf8_cntrl, p); |
641 | } |
642 | |
643 | bool |
644 | Perl_is_utf8_graph(pTHX_ U8 *p) |
645 | { |
ee8c7f54 |
646 | if (!is_utf8_char(p)) |
647 | return FALSE; |
b8c5462f |
648 | if (!PL_utf8_graph) |
649 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); |
650 | return swash_fetch(PL_utf8_graph, p); |
651 | } |
652 | |
653 | bool |
864dbfa3 |
654 | Perl_is_utf8_print(pTHX_ U8 *p) |
a0ed51b3 |
655 | { |
ee8c7f54 |
656 | if (!is_utf8_char(p)) |
657 | return FALSE; |
a0ed51b3 |
658 | if (!PL_utf8_print) |
e24b16f9 |
659 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
a0ed51b3 |
660 | return swash_fetch(PL_utf8_print, p); |
661 | } |
662 | |
663 | bool |
b8c5462f |
664 | Perl_is_utf8_punct(pTHX_ U8 *p) |
665 | { |
ee8c7f54 |
666 | if (!is_utf8_char(p)) |
667 | return FALSE; |
b8c5462f |
668 | if (!PL_utf8_punct) |
669 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); |
670 | return swash_fetch(PL_utf8_punct, p); |
671 | } |
672 | |
673 | bool |
674 | Perl_is_utf8_xdigit(pTHX_ U8 *p) |
675 | { |
ee8c7f54 |
676 | if (!is_utf8_char(p)) |
677 | return FALSE; |
b8c5462f |
678 | if (!PL_utf8_xdigit) |
679 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); |
680 | return swash_fetch(PL_utf8_xdigit, p); |
681 | } |
682 | |
683 | bool |
864dbfa3 |
684 | Perl_is_utf8_mark(pTHX_ U8 *p) |
a0ed51b3 |
685 | { |
ee8c7f54 |
686 | if (!is_utf8_char(p)) |
687 | return FALSE; |
a0ed51b3 |
688 | if (!PL_utf8_mark) |
e24b16f9 |
689 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
a0ed51b3 |
690 | return swash_fetch(PL_utf8_mark, p); |
691 | } |
692 | |
2104c8d9 |
693 | UV |
864dbfa3 |
694 | Perl_to_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 |
695 | { |
696 | UV uv; |
697 | |
698 | if (!PL_utf8_toupper) |
e24b16f9 |
699 | PL_utf8_toupper = swash_init("utf8", "ToUpper", &PL_sv_undef, 4, 0); |
a0ed51b3 |
700 | uv = swash_fetch(PL_utf8_toupper, p); |
701 | return uv ? uv : utf8_to_uv(p,0); |
702 | } |
703 | |
2104c8d9 |
704 | UV |
864dbfa3 |
705 | Perl_to_utf8_title(pTHX_ U8 *p) |
a0ed51b3 |
706 | { |
707 | UV uv; |
708 | |
709 | if (!PL_utf8_totitle) |
e24b16f9 |
710 | PL_utf8_totitle = swash_init("utf8", "ToTitle", &PL_sv_undef, 4, 0); |
a0ed51b3 |
711 | uv = swash_fetch(PL_utf8_totitle, p); |
712 | return uv ? uv : utf8_to_uv(p,0); |
713 | } |
714 | |
2104c8d9 |
715 | UV |
864dbfa3 |
716 | Perl_to_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 |
717 | { |
718 | UV uv; |
719 | |
720 | if (!PL_utf8_tolower) |
e24b16f9 |
721 | PL_utf8_tolower = swash_init("utf8", "ToLower", &PL_sv_undef, 4, 0); |
a0ed51b3 |
722 | uv = swash_fetch(PL_utf8_tolower, p); |
723 | return uv ? uv : utf8_to_uv(p,0); |
724 | } |
725 | |
726 | /* a "swash" is a swatch hash */ |
727 | |
728 | SV* |
864dbfa3 |
729 | Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 |
730 | { |
731 | SV* retval; |
732 | char tmpbuf[256]; |
733 | dSP; |
ce3b816e |
734 | |
735 | if (!gv_stashpv(pkg, 0)) { /* demand load utf8 */ |
736 | ENTER; |
737 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv); |
738 | LEAVE; |
739 | } |
740 | SPAGAIN; |
a0ed51b3 |
741 | PUSHSTACKi(PERLSI_MAGIC); |
742 | PUSHMARK(SP); |
743 | EXTEND(SP,5); |
744 | PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg)))); |
745 | PUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
746 | PUSHs(listsv); |
747 | PUSHs(sv_2mortal(newSViv(minbits))); |
748 | PUSHs(sv_2mortal(newSViv(none))); |
749 | PUTBACK; |
750 | ENTER; |
751 | SAVEI32(PL_hints); |
752 | PL_hints = 0; |
753 | save_re_context(); |
e24b16f9 |
754 | if (PL_curcop == &PL_compiling) /* XXX ought to be handled by lex_start */ |
a0ed51b3 |
755 | strncpy(tmpbuf, PL_tokenbuf, sizeof tmpbuf); |
864dbfa3 |
756 | if (call_method("SWASHNEW", G_SCALAR)) |
e24b16f9 |
757 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
758 | else |
e24b16f9 |
759 | retval = &PL_sv_undef; |
a0ed51b3 |
760 | LEAVE; |
761 | POPSTACK; |
e24b16f9 |
762 | if (PL_curcop == &PL_compiling) { |
a0ed51b3 |
763 | strncpy(PL_tokenbuf, tmpbuf, sizeof tmpbuf); |
e24b16f9 |
764 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
765 | } |
766 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) |
cea2e8a9 |
767 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
a0ed51b3 |
768 | return retval; |
769 | } |
770 | |
771 | UV |
864dbfa3 |
772 | Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr) |
a0ed51b3 |
773 | { |
774 | HV* hv = (HV*)SvRV(sv); |
775 | U32 klen = UTF8SKIP(ptr) - 1; |
776 | U32 off = ptr[klen] & 127; /* NB: 64 bit always 0 when len > 1 */ |
777 | STRLEN slen; |
778 | STRLEN needents = (klen ? 64 : 128); |
dfe13c55 |
779 | U8 *tmps; |
a0ed51b3 |
780 | U32 bit; |
781 | SV *retval; |
782 | |
783 | /* |
784 | * This single-entry cache saves about 1/3 of the utf8 overhead in test |
785 | * suite. (That is, only 7-8% overall over just a hash cache. Still, |
786 | * it's nothing to sniff at.) Pity we usually come through at least |
787 | * two function calls to get here... |
788 | * |
789 | * NB: this code assumes that swatches are never modified, once generated! |
790 | */ |
791 | |
792 | if (hv == PL_last_swash_hv && |
793 | klen == PL_last_swash_klen && |
794 | (!klen || memEQ(ptr,PL_last_swash_key,klen)) ) |
795 | { |
796 | tmps = PL_last_swash_tmps; |
797 | slen = PL_last_swash_slen; |
798 | } |
799 | else { |
800 | /* Try our second-level swatch cache, kept in a hash. */ |
dfe13c55 |
801 | SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE); |
a0ed51b3 |
802 | |
803 | /* If not cached, generate it via utf8::SWASHGET */ |
dfe13c55 |
804 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
a0ed51b3 |
805 | dSP; |
806 | ENTER; |
807 | SAVETMPS; |
808 | save_re_context(); |
809 | PUSHSTACKi(PERLSI_MAGIC); |
810 | PUSHMARK(SP); |
811 | EXTEND(SP,3); |
812 | PUSHs((SV*)sv); |
813 | PUSHs(sv_2mortal(newSViv(utf8_to_uv(ptr, 0) & ~(needents - 1)))); |
814 | PUSHs(sv_2mortal(newSViv(needents))); |
815 | PUTBACK; |
864dbfa3 |
816 | if (call_method("SWASHGET", G_SCALAR)) |
e24b16f9 |
817 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
818 | else |
e24b16f9 |
819 | retval = &PL_sv_undef; |
a0ed51b3 |
820 | POPSTACK; |
821 | FREETMPS; |
822 | LEAVE; |
e24b16f9 |
823 | if (PL_curcop == &PL_compiling) |
824 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
825 | |
dfe13c55 |
826 | svp = hv_store(hv, (char*)ptr, klen, retval, 0); |
a0ed51b3 |
827 | |
dfe13c55 |
828 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || slen < 8) |
cea2e8a9 |
829 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 |
830 | } |
831 | |
832 | PL_last_swash_hv = hv; |
833 | PL_last_swash_klen = klen; |
834 | PL_last_swash_tmps = tmps; |
835 | PL_last_swash_slen = slen; |
836 | if (klen) |
837 | Copy(ptr, PL_last_swash_key, klen, U8); |
838 | } |
839 | |
840 | switch ((slen << 3) / needents) { |
841 | case 1: |
842 | bit = 1 << (off & 7); |
843 | off >>= 3; |
844 | return (tmps[off] & bit) != 0; |
845 | case 8: |
846 | return tmps[off]; |
847 | case 16: |
848 | off <<= 1; |
849 | return (tmps[off] << 8) + tmps[off + 1] ; |
850 | case 32: |
851 | off <<= 2; |
852 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; |
853 | } |
cea2e8a9 |
854 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 |
855 | return 0; |
856 | } |