Commit | Line | Data |
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a0ed51b3 LW |
1 | /* utf8.c |
2 | * | |
4eb8286e | 3 | * Copyright (c) 1998-1999, Larry Wall |
a0ed51b3 LW |
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 LW |
25 | #include "perl.h" |
26 | ||
27 | /* Unicode support */ | |
28 | ||
dfe13c55 | 29 | U8 * |
864dbfa3 | 30 | Perl_uv_to_utf8(pTHX_ U8 *d, UV uv) |
a0ed51b3 LW |
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 | } | |
71 | #ifdef Quad_t | |
72 | if (uv < 0x2000000000) | |
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 | } | |
84 | #ifdef Quad_t | |
85 | { | |
86 | *d++ = 0xff; /* Can't match U+FFFE! */ | |
87 | *d++ = (((uv >> 36) & 0x3f) | 0x80); | |
88 | *d++ = (((uv >> 30) & 0x3f) | 0x80); | |
89 | *d++ = (((uv >> 24) & 0x3f) | 0x80); | |
90 | *d++ = (((uv >> 18) & 0x3f) | 0x80); | |
91 | *d++ = (((uv >> 12) & 0x3f) | 0x80); | |
92 | *d++ = (((uv >> 6) & 0x3f) | 0x80); | |
93 | *d++ = (( uv & 0x3f) | 0x80); | |
94 | return d; | |
95 | } | |
96 | #endif | |
97 | } | |
98 | ||
99 | UV | |
864dbfa3 | 100 | Perl_utf8_to_uv(pTHX_ U8* s, I32* retlen) |
a0ed51b3 LW |
101 | { |
102 | UV uv = *s; | |
103 | int len; | |
104 | if (!(uv & 0x80)) { | |
105 | if (retlen) | |
106 | *retlen = 1; | |
107 | return *s; | |
108 | } | |
109 | if (!(uv & 0x40)) { | |
0453d815 PM |
110 | dTHR; |
111 | if (ckWARN_d(WARN_UTF8)) | |
112 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character"); | |
a0ed51b3 LW |
113 | if (retlen) |
114 | *retlen = 1; | |
115 | return *s; | |
116 | } | |
117 | ||
118 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } | |
119 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } | |
120 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } | |
121 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } | |
122 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } | |
123 | else if (!(uv & 0x01)) { len = 7; uv &= 0x00; } | |
124 | else len = 8; /* whoa! */ | |
125 | ||
126 | if (retlen) | |
127 | *retlen = len; | |
128 | --len; | |
129 | s++; | |
130 | while (len--) { | |
131 | if ((*s & 0xc0) != 0x80) { | |
0453d815 PM |
132 | dTHR; |
133 | if (ckWARN_d(WARN_UTF8)) | |
134 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character"); | |
a0ed51b3 LW |
135 | if (retlen) |
136 | *retlen -= len + 1; | |
137 | return 0xfffd; | |
138 | } | |
139 | else | |
140 | uv = (uv << 6) | (*s++ & 0x3f); | |
141 | } | |
142 | return uv; | |
143 | } | |
144 | ||
145 | /* utf8_distance(a,b) is intended to be a - b in pointer arithmetic */ | |
146 | ||
147 | I32 | |
864dbfa3 | 148 | Perl_utf8_distance(pTHX_ U8 *a, U8 *b) |
a0ed51b3 LW |
149 | { |
150 | I32 off = 0; | |
151 | if (a < b) { | |
152 | while (a < b) { | |
153 | a += UTF8SKIP(a); | |
154 | off--; | |
155 | } | |
156 | } | |
157 | else { | |
158 | while (b < a) { | |
159 | b += UTF8SKIP(b); | |
160 | off++; | |
161 | } | |
162 | } | |
163 | return off; | |
164 | } | |
165 | ||
166 | /* WARNING: do not use the following unless you *know* off is within bounds */ | |
167 | ||
168 | U8 * | |
864dbfa3 | 169 | Perl_utf8_hop(pTHX_ U8 *s, I32 off) |
a0ed51b3 LW |
170 | { |
171 | if (off >= 0) { | |
172 | while (off--) | |
173 | s += UTF8SKIP(s); | |
174 | } | |
175 | else { | |
176 | while (off++) { | |
177 | s--; | |
178 | if (*s & 0x80) { | |
179 | while ((*s & 0xc0) == 0x80) | |
180 | s--; | |
181 | } | |
182 | } | |
183 | } | |
184 | return s; | |
185 | } | |
186 | ||
187 | /* XXX NOTHING CALLS THE FOLLOWING TWO ROUTINES YET!!! */ | |
188 | /* | |
189 | * Convert native or reversed UTF-16 to UTF-8. | |
190 | * | |
191 | * Destination must be pre-extended to 3/2 source. Do not use in-place. | |
192 | * We optimize for native, for obvious reasons. */ | |
193 | ||
194 | U8* | |
864dbfa3 | 195 | Perl_utf16_to_utf8(pTHX_ U16* p, U8* d, I32 bytelen) |
a0ed51b3 LW |
196 | { |
197 | U16* pend = p + bytelen / 2; | |
198 | while (p < pend) { | |
199 | UV uv = *p++; | |
200 | if (uv < 0x80) { | |
201 | *d++ = uv; | |
202 | continue; | |
203 | } | |
204 | if (uv < 0x800) { | |
205 | *d++ = (( uv >> 6) | 0xc0); | |
206 | *d++ = (( uv & 0x3f) | 0x80); | |
207 | continue; | |
208 | } | |
209 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ | |
0453d815 | 210 | dTHR; |
a0ed51b3 LW |
211 | int low = *p++; |
212 | if (low < 0xdc00 || low >= 0xdfff) { | |
0453d815 PM |
213 | if (ckWARN_d(WARN_UTF8)) |
214 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-16 surrogate"); | |
a0ed51b3 LW |
215 | p--; |
216 | uv = 0xfffd; | |
217 | } | |
218 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; | |
219 | } | |
220 | if (uv < 0x10000) { | |
221 | *d++ = (( uv >> 12) | 0xe0); | |
222 | *d++ = (((uv >> 6) & 0x3f) | 0x80); | |
223 | *d++ = (( uv & 0x3f) | 0x80); | |
224 | continue; | |
225 | } | |
226 | else { | |
227 | *d++ = (( uv >> 18) | 0xf0); | |
228 | *d++ = (((uv >> 12) & 0x3f) | 0x80); | |
229 | *d++ = (((uv >> 6) & 0x3f) | 0x80); | |
230 | *d++ = (( uv & 0x3f) | 0x80); | |
231 | continue; | |
232 | } | |
233 | } | |
234 | return d; | |
235 | } | |
236 | ||
237 | /* Note: this one is slightly destructive of the source. */ | |
238 | ||
239 | U8* | |
864dbfa3 | 240 | Perl_utf16_to_utf8_reversed(pTHX_ U16* p, U8* d, I32 bytelen) |
a0ed51b3 LW |
241 | { |
242 | U8* s = (U8*)p; | |
243 | U8* send = s + bytelen; | |
244 | while (s < send) { | |
245 | U8 tmp = s[0]; | |
246 | s[0] = s[1]; | |
247 | s[1] = tmp; | |
248 | s += 2; | |
249 | } | |
250 | return utf16_to_utf8(p, d, bytelen); | |
251 | } | |
252 | ||
253 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ | |
254 | ||
255 | bool | |
864dbfa3 | 256 | Perl_is_uni_alnum(pTHX_ U32 c) |
a0ed51b3 | 257 | { |
dfe13c55 | 258 | U8 tmpbuf[10]; |
a0ed51b3 LW |
259 | uv_to_utf8(tmpbuf, (UV)c); |
260 | return is_utf8_alnum(tmpbuf); | |
261 | } | |
262 | ||
263 | bool | |
b8c5462f JH |
264 | Perl_is_uni_alnumc(pTHX_ U32 c) |
265 | { | |
266 | U8 tmpbuf[10]; | |
267 | uv_to_utf8(tmpbuf, (UV)c); | |
268 | return is_utf8_alnumc(tmpbuf); | |
269 | } | |
270 | ||
271 | bool | |
864dbfa3 | 272 | Perl_is_uni_idfirst(pTHX_ U32 c) |
a0ed51b3 | 273 | { |
dfe13c55 | 274 | U8 tmpbuf[10]; |
a0ed51b3 LW |
275 | uv_to_utf8(tmpbuf, (UV)c); |
276 | return is_utf8_idfirst(tmpbuf); | |
277 | } | |
278 | ||
279 | bool | |
864dbfa3 | 280 | Perl_is_uni_alpha(pTHX_ U32 c) |
a0ed51b3 | 281 | { |
dfe13c55 | 282 | U8 tmpbuf[10]; |
a0ed51b3 LW |
283 | uv_to_utf8(tmpbuf, (UV)c); |
284 | return is_utf8_alpha(tmpbuf); | |
285 | } | |
286 | ||
287 | bool | |
4d61ec05 GS |
288 | Perl_is_uni_ascii(pTHX_ U32 c) |
289 | { | |
290 | U8 tmpbuf[10]; | |
291 | uv_to_utf8(tmpbuf, (UV)c); | |
292 | return is_utf8_ascii(tmpbuf); | |
293 | } | |
294 | ||
295 | bool | |
864dbfa3 | 296 | Perl_is_uni_space(pTHX_ U32 c) |
a0ed51b3 | 297 | { |
dfe13c55 | 298 | U8 tmpbuf[10]; |
a0ed51b3 LW |
299 | uv_to_utf8(tmpbuf, (UV)c); |
300 | return is_utf8_space(tmpbuf); | |
301 | } | |
302 | ||
303 | bool | |
864dbfa3 | 304 | Perl_is_uni_digit(pTHX_ U32 c) |
a0ed51b3 | 305 | { |
dfe13c55 | 306 | U8 tmpbuf[10]; |
a0ed51b3 LW |
307 | uv_to_utf8(tmpbuf, (UV)c); |
308 | return is_utf8_digit(tmpbuf); | |
309 | } | |
310 | ||
311 | bool | |
864dbfa3 | 312 | Perl_is_uni_upper(pTHX_ U32 c) |
a0ed51b3 | 313 | { |
dfe13c55 | 314 | U8 tmpbuf[10]; |
a0ed51b3 LW |
315 | uv_to_utf8(tmpbuf, (UV)c); |
316 | return is_utf8_upper(tmpbuf); | |
317 | } | |
318 | ||
319 | bool | |
864dbfa3 | 320 | Perl_is_uni_lower(pTHX_ U32 c) |
a0ed51b3 | 321 | { |
dfe13c55 | 322 | U8 tmpbuf[10]; |
a0ed51b3 LW |
323 | uv_to_utf8(tmpbuf, (UV)c); |
324 | return is_utf8_lower(tmpbuf); | |
325 | } | |
326 | ||
327 | bool | |
b8c5462f JH |
328 | Perl_is_uni_cntrl(pTHX_ U32 c) |
329 | { | |
330 | U8 tmpbuf[10]; | |
331 | uv_to_utf8(tmpbuf, (UV)c); | |
332 | return is_utf8_cntrl(tmpbuf); | |
333 | } | |
334 | ||
335 | bool | |
336 | Perl_is_uni_graph(pTHX_ U32 c) | |
337 | { | |
338 | U8 tmpbuf[10]; | |
339 | uv_to_utf8(tmpbuf, (UV)c); | |
340 | return is_utf8_graph(tmpbuf); | |
341 | } | |
342 | ||
343 | bool | |
864dbfa3 | 344 | Perl_is_uni_print(pTHX_ U32 c) |
a0ed51b3 | 345 | { |
dfe13c55 | 346 | U8 tmpbuf[10]; |
a0ed51b3 LW |
347 | uv_to_utf8(tmpbuf, (UV)c); |
348 | return is_utf8_print(tmpbuf); | |
349 | } | |
350 | ||
b8c5462f | 351 | bool |
f248d071 | 352 | Perl_is_uni_punct(pTHX_ U32 c) |
b8c5462f JH |
353 | { |
354 | U8 tmpbuf[10]; | |
355 | uv_to_utf8(tmpbuf, (UV)c); | |
356 | return is_utf8_punct(tmpbuf); | |
357 | } | |
358 | ||
4d61ec05 GS |
359 | bool |
360 | Perl_is_uni_xdigit(pTHX_ U32 c) | |
361 | { | |
362 | U8 tmpbuf[10]; | |
363 | uv_to_utf8(tmpbuf, (UV)c); | |
364 | return is_utf8_xdigit(tmpbuf); | |
365 | } | |
366 | ||
a0ed51b3 | 367 | U32 |
864dbfa3 | 368 | Perl_to_uni_upper(pTHX_ U32 c) |
a0ed51b3 | 369 | { |
dfe13c55 | 370 | U8 tmpbuf[10]; |
a0ed51b3 LW |
371 | uv_to_utf8(tmpbuf, (UV)c); |
372 | return to_utf8_upper(tmpbuf); | |
373 | } | |
374 | ||
375 | U32 | |
864dbfa3 | 376 | Perl_to_uni_title(pTHX_ U32 c) |
a0ed51b3 | 377 | { |
dfe13c55 | 378 | U8 tmpbuf[10]; |
a0ed51b3 LW |
379 | uv_to_utf8(tmpbuf, (UV)c); |
380 | return to_utf8_title(tmpbuf); | |
381 | } | |
382 | ||
383 | U32 | |
864dbfa3 | 384 | Perl_to_uni_lower(pTHX_ U32 c) |
a0ed51b3 | 385 | { |
dfe13c55 | 386 | U8 tmpbuf[10]; |
a0ed51b3 LW |
387 | uv_to_utf8(tmpbuf, (UV)c); |
388 | return to_utf8_lower(tmpbuf); | |
389 | } | |
390 | ||
391 | /* for now these all assume no locale info available for Unicode > 255 */ | |
392 | ||
393 | bool | |
864dbfa3 | 394 | Perl_is_uni_alnum_lc(pTHX_ U32 c) |
a0ed51b3 LW |
395 | { |
396 | return is_uni_alnum(c); /* XXX no locale support yet */ | |
397 | } | |
398 | ||
399 | bool | |
b8c5462f JH |
400 | Perl_is_uni_alnumc_lc(pTHX_ U32 c) |
401 | { | |
402 | return is_uni_alnumc(c); /* XXX no locale support yet */ | |
403 | } | |
404 | ||
405 | bool | |
864dbfa3 | 406 | Perl_is_uni_idfirst_lc(pTHX_ U32 c) |
a0ed51b3 LW |
407 | { |
408 | return is_uni_idfirst(c); /* XXX no locale support yet */ | |
409 | } | |
410 | ||
411 | bool | |
864dbfa3 | 412 | Perl_is_uni_alpha_lc(pTHX_ U32 c) |
a0ed51b3 LW |
413 | { |
414 | return is_uni_alpha(c); /* XXX no locale support yet */ | |
415 | } | |
416 | ||
417 | bool | |
4d61ec05 GS |
418 | Perl_is_uni_ascii_lc(pTHX_ U32 c) |
419 | { | |
420 | return is_uni_ascii(c); /* XXX no locale support yet */ | |
421 | } | |
422 | ||
423 | bool | |
864dbfa3 | 424 | Perl_is_uni_space_lc(pTHX_ U32 c) |
a0ed51b3 LW |
425 | { |
426 | return is_uni_space(c); /* XXX no locale support yet */ | |
427 | } | |
428 | ||
429 | bool | |
864dbfa3 | 430 | Perl_is_uni_digit_lc(pTHX_ U32 c) |
a0ed51b3 LW |
431 | { |
432 | return is_uni_digit(c); /* XXX no locale support yet */ | |
433 | } | |
434 | ||
435 | bool | |
864dbfa3 | 436 | Perl_is_uni_upper_lc(pTHX_ U32 c) |
a0ed51b3 LW |
437 | { |
438 | return is_uni_upper(c); /* XXX no locale support yet */ | |
439 | } | |
440 | ||
441 | bool | |
864dbfa3 | 442 | Perl_is_uni_lower_lc(pTHX_ U32 c) |
a0ed51b3 LW |
443 | { |
444 | return is_uni_lower(c); /* XXX no locale support yet */ | |
445 | } | |
446 | ||
447 | bool | |
b8c5462f JH |
448 | Perl_is_uni_cntrl_lc(pTHX_ U32 c) |
449 | { | |
450 | return is_uni_cntrl(c); /* XXX no locale support yet */ | |
451 | } | |
452 | ||
453 | bool | |
454 | Perl_is_uni_graph_lc(pTHX_ U32 c) | |
455 | { | |
456 | return is_uni_graph(c); /* XXX no locale support yet */ | |
457 | } | |
458 | ||
459 | bool | |
864dbfa3 | 460 | Perl_is_uni_print_lc(pTHX_ U32 c) |
a0ed51b3 LW |
461 | { |
462 | return is_uni_print(c); /* XXX no locale support yet */ | |
463 | } | |
464 | ||
b8c5462f JH |
465 | bool |
466 | Perl_is_uni_punct_lc(pTHX_ U32 c) | |
467 | { | |
468 | return is_uni_punct(c); /* XXX no locale support yet */ | |
469 | } | |
470 | ||
4d61ec05 GS |
471 | bool |
472 | Perl_is_uni_xdigit_lc(pTHX_ U32 c) | |
473 | { | |
474 | return is_uni_xdigit(c); /* XXX no locale support yet */ | |
475 | } | |
476 | ||
a0ed51b3 | 477 | U32 |
864dbfa3 | 478 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
a0ed51b3 LW |
479 | { |
480 | return to_uni_upper(c); /* XXX no locale support yet */ | |
481 | } | |
482 | ||
483 | U32 | |
864dbfa3 | 484 | Perl_to_uni_title_lc(pTHX_ U32 c) |
a0ed51b3 LW |
485 | { |
486 | return to_uni_title(c); /* XXX no locale support yet */ | |
487 | } | |
488 | ||
489 | U32 | |
864dbfa3 | 490 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
a0ed51b3 LW |
491 | { |
492 | return to_uni_lower(c); /* XXX no locale support yet */ | |
493 | } | |
494 | ||
a0ed51b3 | 495 | bool |
864dbfa3 | 496 | Perl_is_utf8_alnum(pTHX_ U8 *p) |
a0ed51b3 LW |
497 | { |
498 | if (!PL_utf8_alnum) | |
e24b16f9 | 499 | PL_utf8_alnum = swash_init("utf8", "IsAlnum", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
500 | return swash_fetch(PL_utf8_alnum, p); |
501 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ | |
502 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ | |
503 | if (!PL_utf8_alnum) | |
504 | PL_utf8_alnum = swash_init("utf8", "", | |
505 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); | |
506 | return swash_fetch(PL_utf8_alnum, p); | |
507 | #endif | |
508 | } | |
509 | ||
510 | bool | |
b8c5462f JH |
511 | Perl_is_utf8_alnumc(pTHX_ U8 *p) |
512 | { | |
513 | if (!PL_utf8_alnum) | |
514 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); | |
515 | return swash_fetch(PL_utf8_alnum, p); | |
516 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ | |
517 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ | |
518 | if (!PL_utf8_alnum) | |
519 | PL_utf8_alnum = swash_init("utf8", "", | |
520 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); | |
521 | return swash_fetch(PL_utf8_alnum, p); | |
522 | #endif | |
523 | } | |
524 | ||
525 | bool | |
864dbfa3 | 526 | Perl_is_utf8_idfirst(pTHX_ U8 *p) |
a0ed51b3 LW |
527 | { |
528 | return *p == '_' || is_utf8_alpha(p); | |
529 | } | |
530 | ||
531 | bool | |
864dbfa3 | 532 | Perl_is_utf8_alpha(pTHX_ U8 *p) |
a0ed51b3 LW |
533 | { |
534 | if (!PL_utf8_alpha) | |
e24b16f9 | 535 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
536 | return swash_fetch(PL_utf8_alpha, p); |
537 | } | |
538 | ||
539 | bool | |
b8c5462f JH |
540 | Perl_is_utf8_ascii(pTHX_ U8 *p) |
541 | { | |
542 | if (!PL_utf8_ascii) | |
543 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); | |
544 | return swash_fetch(PL_utf8_ascii, p); | |
545 | } | |
546 | ||
547 | bool | |
864dbfa3 | 548 | Perl_is_utf8_space(pTHX_ U8 *p) |
a0ed51b3 LW |
549 | { |
550 | if (!PL_utf8_space) | |
e24b16f9 | 551 | PL_utf8_space = swash_init("utf8", "IsSpace", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
552 | return swash_fetch(PL_utf8_space, p); |
553 | } | |
554 | ||
555 | bool | |
864dbfa3 | 556 | Perl_is_utf8_digit(pTHX_ U8 *p) |
a0ed51b3 LW |
557 | { |
558 | if (!PL_utf8_digit) | |
e24b16f9 | 559 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
560 | return swash_fetch(PL_utf8_digit, p); |
561 | } | |
562 | ||
563 | bool | |
864dbfa3 | 564 | Perl_is_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 LW |
565 | { |
566 | if (!PL_utf8_upper) | |
e24b16f9 | 567 | PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
568 | return swash_fetch(PL_utf8_upper, p); |
569 | } | |
570 | ||
571 | bool | |
864dbfa3 | 572 | Perl_is_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 LW |
573 | { |
574 | if (!PL_utf8_lower) | |
e24b16f9 | 575 | PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
576 | return swash_fetch(PL_utf8_lower, p); |
577 | } | |
578 | ||
579 | bool | |
b8c5462f JH |
580 | Perl_is_utf8_cntrl(pTHX_ U8 *p) |
581 | { | |
582 | if (!PL_utf8_cntrl) | |
583 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); | |
584 | return swash_fetch(PL_utf8_cntrl, p); | |
585 | } | |
586 | ||
587 | bool | |
588 | Perl_is_utf8_graph(pTHX_ U8 *p) | |
589 | { | |
590 | if (!PL_utf8_graph) | |
591 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); | |
592 | return swash_fetch(PL_utf8_graph, p); | |
593 | } | |
594 | ||
595 | bool | |
864dbfa3 | 596 | Perl_is_utf8_print(pTHX_ U8 *p) |
a0ed51b3 LW |
597 | { |
598 | if (!PL_utf8_print) | |
e24b16f9 | 599 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
600 | return swash_fetch(PL_utf8_print, p); |
601 | } | |
602 | ||
603 | bool | |
b8c5462f JH |
604 | Perl_is_utf8_punct(pTHX_ U8 *p) |
605 | { | |
606 | if (!PL_utf8_punct) | |
607 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); | |
608 | return swash_fetch(PL_utf8_punct, p); | |
609 | } | |
610 | ||
611 | bool | |
612 | Perl_is_utf8_xdigit(pTHX_ U8 *p) | |
613 | { | |
614 | if (!PL_utf8_xdigit) | |
615 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); | |
616 | return swash_fetch(PL_utf8_xdigit, p); | |
617 | } | |
618 | ||
619 | bool | |
864dbfa3 | 620 | Perl_is_utf8_mark(pTHX_ U8 *p) |
a0ed51b3 LW |
621 | { |
622 | if (!PL_utf8_mark) | |
e24b16f9 | 623 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
624 | return swash_fetch(PL_utf8_mark, p); |
625 | } | |
626 | ||
2104c8d9 | 627 | UV |
864dbfa3 | 628 | Perl_to_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 LW |
629 | { |
630 | UV uv; | |
631 | ||
632 | if (!PL_utf8_toupper) | |
e24b16f9 | 633 | PL_utf8_toupper = swash_init("utf8", "ToUpper", &PL_sv_undef, 4, 0); |
a0ed51b3 LW |
634 | uv = swash_fetch(PL_utf8_toupper, p); |
635 | return uv ? uv : utf8_to_uv(p,0); | |
636 | } | |
637 | ||
2104c8d9 | 638 | UV |
864dbfa3 | 639 | Perl_to_utf8_title(pTHX_ U8 *p) |
a0ed51b3 LW |
640 | { |
641 | UV uv; | |
642 | ||
643 | if (!PL_utf8_totitle) | |
e24b16f9 | 644 | PL_utf8_totitle = swash_init("utf8", "ToTitle", &PL_sv_undef, 4, 0); |
a0ed51b3 LW |
645 | uv = swash_fetch(PL_utf8_totitle, p); |
646 | return uv ? uv : utf8_to_uv(p,0); | |
647 | } | |
648 | ||
2104c8d9 | 649 | UV |
864dbfa3 | 650 | Perl_to_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 LW |
651 | { |
652 | UV uv; | |
653 | ||
654 | if (!PL_utf8_tolower) | |
e24b16f9 | 655 | PL_utf8_tolower = swash_init("utf8", "ToLower", &PL_sv_undef, 4, 0); |
a0ed51b3 LW |
656 | uv = swash_fetch(PL_utf8_tolower, p); |
657 | return uv ? uv : utf8_to_uv(p,0); | |
658 | } | |
659 | ||
660 | /* a "swash" is a swatch hash */ | |
661 | ||
662 | SV* | |
864dbfa3 | 663 | Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 LW |
664 | { |
665 | SV* retval; | |
666 | char tmpbuf[256]; | |
667 | dSP; | |
668 | PUSHSTACKi(PERLSI_MAGIC); | |
669 | PUSHMARK(SP); | |
670 | EXTEND(SP,5); | |
671 | PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg)))); | |
672 | PUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); | |
673 | PUSHs(listsv); | |
674 | PUSHs(sv_2mortal(newSViv(minbits))); | |
675 | PUSHs(sv_2mortal(newSViv(none))); | |
676 | PUTBACK; | |
677 | ENTER; | |
678 | SAVEI32(PL_hints); | |
679 | PL_hints = 0; | |
680 | save_re_context(); | |
e24b16f9 | 681 | if (PL_curcop == &PL_compiling) /* XXX ought to be handled by lex_start */ |
a0ed51b3 | 682 | strncpy(tmpbuf, PL_tokenbuf, sizeof tmpbuf); |
864dbfa3 | 683 | if (call_method("SWASHNEW", G_SCALAR)) |
e24b16f9 | 684 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 | 685 | else |
e24b16f9 | 686 | retval = &PL_sv_undef; |
a0ed51b3 LW |
687 | LEAVE; |
688 | POPSTACK; | |
e24b16f9 | 689 | if (PL_curcop == &PL_compiling) { |
a0ed51b3 | 690 | strncpy(PL_tokenbuf, tmpbuf, sizeof tmpbuf); |
e24b16f9 | 691 | PL_curcop->op_private = PL_hints; |
a0ed51b3 LW |
692 | } |
693 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) | |
cea2e8a9 | 694 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
a0ed51b3 LW |
695 | return retval; |
696 | } | |
697 | ||
698 | UV | |
864dbfa3 | 699 | Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr) |
a0ed51b3 LW |
700 | { |
701 | HV* hv = (HV*)SvRV(sv); | |
702 | U32 klen = UTF8SKIP(ptr) - 1; | |
703 | U32 off = ptr[klen] & 127; /* NB: 64 bit always 0 when len > 1 */ | |
704 | STRLEN slen; | |
705 | STRLEN needents = (klen ? 64 : 128); | |
dfe13c55 | 706 | U8 *tmps; |
a0ed51b3 LW |
707 | U32 bit; |
708 | SV *retval; | |
709 | ||
710 | /* | |
711 | * This single-entry cache saves about 1/3 of the utf8 overhead in test | |
712 | * suite. (That is, only 7-8% overall over just a hash cache. Still, | |
713 | * it's nothing to sniff at.) Pity we usually come through at least | |
714 | * two function calls to get here... | |
715 | * | |
716 | * NB: this code assumes that swatches are never modified, once generated! | |
717 | */ | |
718 | ||
719 | if (hv == PL_last_swash_hv && | |
720 | klen == PL_last_swash_klen && | |
721 | (!klen || memEQ(ptr,PL_last_swash_key,klen)) ) | |
722 | { | |
723 | tmps = PL_last_swash_tmps; | |
724 | slen = PL_last_swash_slen; | |
725 | } | |
726 | else { | |
727 | /* Try our second-level swatch cache, kept in a hash. */ | |
dfe13c55 | 728 | SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE); |
a0ed51b3 LW |
729 | |
730 | /* If not cached, generate it via utf8::SWASHGET */ | |
dfe13c55 | 731 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
a0ed51b3 LW |
732 | dSP; |
733 | ENTER; | |
734 | SAVETMPS; | |
735 | save_re_context(); | |
736 | PUSHSTACKi(PERLSI_MAGIC); | |
737 | PUSHMARK(SP); | |
738 | EXTEND(SP,3); | |
739 | PUSHs((SV*)sv); | |
740 | PUSHs(sv_2mortal(newSViv(utf8_to_uv(ptr, 0) & ~(needents - 1)))); | |
741 | PUSHs(sv_2mortal(newSViv(needents))); | |
742 | PUTBACK; | |
864dbfa3 | 743 | if (call_method("SWASHGET", G_SCALAR)) |
e24b16f9 | 744 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 | 745 | else |
e24b16f9 | 746 | retval = &PL_sv_undef; |
a0ed51b3 LW |
747 | POPSTACK; |
748 | FREETMPS; | |
749 | LEAVE; | |
e24b16f9 GS |
750 | if (PL_curcop == &PL_compiling) |
751 | PL_curcop->op_private = PL_hints; | |
a0ed51b3 | 752 | |
dfe13c55 | 753 | svp = hv_store(hv, (char*)ptr, klen, retval, 0); |
a0ed51b3 | 754 | |
dfe13c55 | 755 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || slen < 8) |
cea2e8a9 | 756 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 LW |
757 | } |
758 | ||
759 | PL_last_swash_hv = hv; | |
760 | PL_last_swash_klen = klen; | |
761 | PL_last_swash_tmps = tmps; | |
762 | PL_last_swash_slen = slen; | |
763 | if (klen) | |
764 | Copy(ptr, PL_last_swash_key, klen, U8); | |
765 | } | |
766 | ||
767 | switch ((slen << 3) / needents) { | |
768 | case 1: | |
769 | bit = 1 << (off & 7); | |
770 | off >>= 3; | |
771 | return (tmps[off] & bit) != 0; | |
772 | case 8: | |
773 | return tmps[off]; | |
774 | case 16: | |
775 | off <<= 1; | |
776 | return (tmps[off] << 8) + tmps[off + 1] ; | |
777 | case 32: | |
778 | off <<= 2; | |
779 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; | |
780 | } | |
cea2e8a9 | 781 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 LW |
782 | return 0; |
783 | } |