Commit | Line | Data |
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a0ed51b3 LW |
1 | /* utf8.c |
2 | * | |
3818b22b | 3 | * Copyright (c) 1998-2000, 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 | } | |
6b8eaf93 | 71 | #ifdef HAS_QUAD |
628e1a40 | 72 | if (uv < 0x1000000000LL) |
a0ed51b3 LW |
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 LW |
85 | { |
86 | *d++ = 0xff; /* Can't match U+FFFE! */ | |
3c77ea2b GS |
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 LW |
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 | ||
386d01d6 GS |
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 LW |
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 PM |
148 | dTHR; |
149 | if (ckWARN_d(WARN_UTF8)) | |
150 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character"); | |
a0ed51b3 LW |
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 GS |
161 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
162 | else { len = 13; uv = 0; } /* whoa! */ | |
a0ed51b3 LW |
163 | |
164 | if (retlen) | |
165 | *retlen = len; | |
166 | --len; | |
167 | s++; | |
168 | while (len--) { | |
169 | if ((*s & 0xc0) != 0x80) { | |
0453d815 PM |
170 | dTHR; |
171 | if (ckWARN_d(WARN_UTF8)) | |
172 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character"); | |
a0ed51b3 LW |
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 LW |
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 LW |
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 | ||
6940069f | 225 | /* |
497711e7 | 226 | =for apidoc Am|U8 *|utf8_to_bytes|U8 *s|STRLEN len |
6940069f GS |
227 | |
228 | Converts a string C<s> of length C<len> from UTF8 into ASCII encoding. | |
229 | Unlike C<bytes_to_utf8>, this over-writes the original string. | |
230 | ||
231 | =cut | |
232 | */ | |
233 | ||
234 | U8 * | |
235 | Perl_utf8_to_bytes(pTHX_ U8* s, STRLEN len) | |
236 | { | |
237 | dTHR; | |
238 | U8 *send; | |
239 | U8 *d; | |
240 | U8 *save; | |
241 | ||
242 | send = s + len; | |
243 | d = save = s; | |
244 | while (s < send) { | |
245 | if (*s < 0x80) | |
246 | *d++ = *s++; | |
247 | else { | |
248 | I32 ulen; | |
249 | UV uv = utf8_to_uv(s, &ulen); | |
250 | s += ulen; | |
251 | *d++ = (U8)uv; | |
252 | } | |
253 | } | |
254 | *d = '\0'; | |
255 | return save; | |
256 | } | |
257 | ||
258 | /* | |
497711e7 | 259 | =for apidoc Am|U8 *|bytes_to_utf8|U8 *s|STRLEN len |
6940069f GS |
260 | |
261 | Converts a string C<s> of length C<len> from ASCII into UTF8 encoding. | |
262 | Returns a pointer to the newly-created string. | |
263 | ||
497711e7 | 264 | =cut |
6940069f GS |
265 | */ |
266 | ||
267 | U8* | |
268 | Perl_bytes_to_utf8(pTHX_ U8* s, STRLEN len) | |
269 | { | |
270 | dTHR; | |
271 | U8 *send; | |
272 | U8 *d; | |
273 | U8 *dst; | |
274 | send = s + len; | |
275 | ||
276 | Newz(801, d, len * 2 + 1, U8); | |
277 | dst = d; | |
278 | ||
279 | while (s < send) { | |
280 | if (*s < 0x80) | |
281 | *d++ = *s++; | |
282 | else { | |
283 | UV uv = *s++; | |
284 | *d++ = (( uv >> 6) | 0xc0); | |
285 | *d++ = (( uv & 0x3f) | 0x80); | |
286 | } | |
287 | } | |
288 | *d = '\0'; | |
289 | return dst; | |
290 | } | |
291 | ||
a0ed51b3 LW |
292 | /* XXX NOTHING CALLS THE FOLLOWING TWO ROUTINES YET!!! */ |
293 | /* | |
294 | * Convert native or reversed UTF-16 to UTF-8. | |
295 | * | |
296 | * Destination must be pre-extended to 3/2 source. Do not use in-place. | |
297 | * We optimize for native, for obvious reasons. */ | |
298 | ||
299 | U8* | |
864dbfa3 | 300 | Perl_utf16_to_utf8(pTHX_ U16* p, U8* d, I32 bytelen) |
a0ed51b3 LW |
301 | { |
302 | U16* pend = p + bytelen / 2; | |
303 | while (p < pend) { | |
304 | UV uv = *p++; | |
305 | if (uv < 0x80) { | |
306 | *d++ = uv; | |
307 | continue; | |
308 | } | |
309 | if (uv < 0x800) { | |
310 | *d++ = (( uv >> 6) | 0xc0); | |
311 | *d++ = (( uv & 0x3f) | 0x80); | |
312 | continue; | |
313 | } | |
314 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ | |
0453d815 | 315 | dTHR; |
a0ed51b3 LW |
316 | int low = *p++; |
317 | if (low < 0xdc00 || low >= 0xdfff) { | |
0453d815 PM |
318 | if (ckWARN_d(WARN_UTF8)) |
319 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-16 surrogate"); | |
a0ed51b3 LW |
320 | p--; |
321 | uv = 0xfffd; | |
322 | } | |
323 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; | |
324 | } | |
325 | if (uv < 0x10000) { | |
326 | *d++ = (( uv >> 12) | 0xe0); | |
327 | *d++ = (((uv >> 6) & 0x3f) | 0x80); | |
328 | *d++ = (( uv & 0x3f) | 0x80); | |
329 | continue; | |
330 | } | |
331 | else { | |
332 | *d++ = (( uv >> 18) | 0xf0); | |
333 | *d++ = (((uv >> 12) & 0x3f) | 0x80); | |
334 | *d++ = (((uv >> 6) & 0x3f) | 0x80); | |
335 | *d++ = (( uv & 0x3f) | 0x80); | |
336 | continue; | |
337 | } | |
338 | } | |
339 | return d; | |
340 | } | |
341 | ||
342 | /* Note: this one is slightly destructive of the source. */ | |
343 | ||
344 | U8* | |
864dbfa3 | 345 | Perl_utf16_to_utf8_reversed(pTHX_ U16* p, U8* d, I32 bytelen) |
a0ed51b3 LW |
346 | { |
347 | U8* s = (U8*)p; | |
348 | U8* send = s + bytelen; | |
349 | while (s < send) { | |
350 | U8 tmp = s[0]; | |
351 | s[0] = s[1]; | |
352 | s[1] = tmp; | |
353 | s += 2; | |
354 | } | |
355 | return utf16_to_utf8(p, d, bytelen); | |
356 | } | |
357 | ||
358 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ | |
359 | ||
360 | bool | |
864dbfa3 | 361 | Perl_is_uni_alnum(pTHX_ U32 c) |
a0ed51b3 | 362 | { |
aa6ffa16 | 363 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
364 | uv_to_utf8(tmpbuf, (UV)c); |
365 | return is_utf8_alnum(tmpbuf); | |
366 | } | |
367 | ||
368 | bool | |
b8c5462f JH |
369 | Perl_is_uni_alnumc(pTHX_ U32 c) |
370 | { | |
aa6ffa16 | 371 | U8 tmpbuf[UTF8_MAXLEN]; |
b8c5462f JH |
372 | uv_to_utf8(tmpbuf, (UV)c); |
373 | return is_utf8_alnumc(tmpbuf); | |
374 | } | |
375 | ||
376 | bool | |
864dbfa3 | 377 | Perl_is_uni_idfirst(pTHX_ U32 c) |
a0ed51b3 | 378 | { |
aa6ffa16 | 379 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
380 | uv_to_utf8(tmpbuf, (UV)c); |
381 | return is_utf8_idfirst(tmpbuf); | |
382 | } | |
383 | ||
384 | bool | |
864dbfa3 | 385 | Perl_is_uni_alpha(pTHX_ U32 c) |
a0ed51b3 | 386 | { |
aa6ffa16 | 387 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
388 | uv_to_utf8(tmpbuf, (UV)c); |
389 | return is_utf8_alpha(tmpbuf); | |
390 | } | |
391 | ||
392 | bool | |
4d61ec05 GS |
393 | Perl_is_uni_ascii(pTHX_ U32 c) |
394 | { | |
aa6ffa16 | 395 | U8 tmpbuf[UTF8_MAXLEN]; |
4d61ec05 GS |
396 | uv_to_utf8(tmpbuf, (UV)c); |
397 | return is_utf8_ascii(tmpbuf); | |
398 | } | |
399 | ||
400 | bool | |
864dbfa3 | 401 | Perl_is_uni_space(pTHX_ U32 c) |
a0ed51b3 | 402 | { |
aa6ffa16 | 403 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
404 | uv_to_utf8(tmpbuf, (UV)c); |
405 | return is_utf8_space(tmpbuf); | |
406 | } | |
407 | ||
408 | bool | |
864dbfa3 | 409 | Perl_is_uni_digit(pTHX_ U32 c) |
a0ed51b3 | 410 | { |
aa6ffa16 | 411 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
412 | uv_to_utf8(tmpbuf, (UV)c); |
413 | return is_utf8_digit(tmpbuf); | |
414 | } | |
415 | ||
416 | bool | |
864dbfa3 | 417 | Perl_is_uni_upper(pTHX_ U32 c) |
a0ed51b3 | 418 | { |
aa6ffa16 | 419 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
420 | uv_to_utf8(tmpbuf, (UV)c); |
421 | return is_utf8_upper(tmpbuf); | |
422 | } | |
423 | ||
424 | bool | |
864dbfa3 | 425 | Perl_is_uni_lower(pTHX_ U32 c) |
a0ed51b3 | 426 | { |
aa6ffa16 | 427 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
428 | uv_to_utf8(tmpbuf, (UV)c); |
429 | return is_utf8_lower(tmpbuf); | |
430 | } | |
431 | ||
432 | bool | |
b8c5462f JH |
433 | Perl_is_uni_cntrl(pTHX_ U32 c) |
434 | { | |
aa6ffa16 | 435 | U8 tmpbuf[UTF8_MAXLEN]; |
b8c5462f JH |
436 | uv_to_utf8(tmpbuf, (UV)c); |
437 | return is_utf8_cntrl(tmpbuf); | |
438 | } | |
439 | ||
440 | bool | |
441 | Perl_is_uni_graph(pTHX_ U32 c) | |
442 | { | |
aa6ffa16 | 443 | U8 tmpbuf[UTF8_MAXLEN]; |
b8c5462f JH |
444 | uv_to_utf8(tmpbuf, (UV)c); |
445 | return is_utf8_graph(tmpbuf); | |
446 | } | |
447 | ||
448 | bool | |
864dbfa3 | 449 | Perl_is_uni_print(pTHX_ U32 c) |
a0ed51b3 | 450 | { |
aa6ffa16 | 451 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
452 | uv_to_utf8(tmpbuf, (UV)c); |
453 | return is_utf8_print(tmpbuf); | |
454 | } | |
455 | ||
b8c5462f | 456 | bool |
f248d071 | 457 | Perl_is_uni_punct(pTHX_ U32 c) |
b8c5462f | 458 | { |
aa6ffa16 | 459 | U8 tmpbuf[UTF8_MAXLEN]; |
b8c5462f JH |
460 | uv_to_utf8(tmpbuf, (UV)c); |
461 | return is_utf8_punct(tmpbuf); | |
462 | } | |
463 | ||
4d61ec05 GS |
464 | bool |
465 | Perl_is_uni_xdigit(pTHX_ U32 c) | |
466 | { | |
aa6ffa16 | 467 | U8 tmpbuf[UTF8_MAXLEN]; |
4d61ec05 GS |
468 | uv_to_utf8(tmpbuf, (UV)c); |
469 | return is_utf8_xdigit(tmpbuf); | |
470 | } | |
471 | ||
a0ed51b3 | 472 | U32 |
864dbfa3 | 473 | Perl_to_uni_upper(pTHX_ U32 c) |
a0ed51b3 | 474 | { |
aa6ffa16 | 475 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
476 | uv_to_utf8(tmpbuf, (UV)c); |
477 | return to_utf8_upper(tmpbuf); | |
478 | } | |
479 | ||
480 | U32 | |
864dbfa3 | 481 | Perl_to_uni_title(pTHX_ U32 c) |
a0ed51b3 | 482 | { |
aa6ffa16 | 483 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
484 | uv_to_utf8(tmpbuf, (UV)c); |
485 | return to_utf8_title(tmpbuf); | |
486 | } | |
487 | ||
488 | U32 | |
864dbfa3 | 489 | Perl_to_uni_lower(pTHX_ U32 c) |
a0ed51b3 | 490 | { |
aa6ffa16 | 491 | U8 tmpbuf[UTF8_MAXLEN]; |
a0ed51b3 LW |
492 | uv_to_utf8(tmpbuf, (UV)c); |
493 | return to_utf8_lower(tmpbuf); | |
494 | } | |
495 | ||
496 | /* for now these all assume no locale info available for Unicode > 255 */ | |
497 | ||
498 | bool | |
864dbfa3 | 499 | Perl_is_uni_alnum_lc(pTHX_ U32 c) |
a0ed51b3 LW |
500 | { |
501 | return is_uni_alnum(c); /* XXX no locale support yet */ | |
502 | } | |
503 | ||
504 | bool | |
b8c5462f JH |
505 | Perl_is_uni_alnumc_lc(pTHX_ U32 c) |
506 | { | |
507 | return is_uni_alnumc(c); /* XXX no locale support yet */ | |
508 | } | |
509 | ||
510 | bool | |
864dbfa3 | 511 | Perl_is_uni_idfirst_lc(pTHX_ U32 c) |
a0ed51b3 LW |
512 | { |
513 | return is_uni_idfirst(c); /* XXX no locale support yet */ | |
514 | } | |
515 | ||
516 | bool | |
864dbfa3 | 517 | Perl_is_uni_alpha_lc(pTHX_ U32 c) |
a0ed51b3 LW |
518 | { |
519 | return is_uni_alpha(c); /* XXX no locale support yet */ | |
520 | } | |
521 | ||
522 | bool | |
4d61ec05 GS |
523 | Perl_is_uni_ascii_lc(pTHX_ U32 c) |
524 | { | |
525 | return is_uni_ascii(c); /* XXX no locale support yet */ | |
526 | } | |
527 | ||
528 | bool | |
864dbfa3 | 529 | Perl_is_uni_space_lc(pTHX_ U32 c) |
a0ed51b3 LW |
530 | { |
531 | return is_uni_space(c); /* XXX no locale support yet */ | |
532 | } | |
533 | ||
534 | bool | |
864dbfa3 | 535 | Perl_is_uni_digit_lc(pTHX_ U32 c) |
a0ed51b3 LW |
536 | { |
537 | return is_uni_digit(c); /* XXX no locale support yet */ | |
538 | } | |
539 | ||
540 | bool | |
864dbfa3 | 541 | Perl_is_uni_upper_lc(pTHX_ U32 c) |
a0ed51b3 LW |
542 | { |
543 | return is_uni_upper(c); /* XXX no locale support yet */ | |
544 | } | |
545 | ||
546 | bool | |
864dbfa3 | 547 | Perl_is_uni_lower_lc(pTHX_ U32 c) |
a0ed51b3 LW |
548 | { |
549 | return is_uni_lower(c); /* XXX no locale support yet */ | |
550 | } | |
551 | ||
552 | bool | |
b8c5462f JH |
553 | Perl_is_uni_cntrl_lc(pTHX_ U32 c) |
554 | { | |
555 | return is_uni_cntrl(c); /* XXX no locale support yet */ | |
556 | } | |
557 | ||
558 | bool | |
559 | Perl_is_uni_graph_lc(pTHX_ U32 c) | |
560 | { | |
561 | return is_uni_graph(c); /* XXX no locale support yet */ | |
562 | } | |
563 | ||
564 | bool | |
864dbfa3 | 565 | Perl_is_uni_print_lc(pTHX_ U32 c) |
a0ed51b3 LW |
566 | { |
567 | return is_uni_print(c); /* XXX no locale support yet */ | |
568 | } | |
569 | ||
b8c5462f JH |
570 | bool |
571 | Perl_is_uni_punct_lc(pTHX_ U32 c) | |
572 | { | |
573 | return is_uni_punct(c); /* XXX no locale support yet */ | |
574 | } | |
575 | ||
4d61ec05 GS |
576 | bool |
577 | Perl_is_uni_xdigit_lc(pTHX_ U32 c) | |
578 | { | |
579 | return is_uni_xdigit(c); /* XXX no locale support yet */ | |
580 | } | |
581 | ||
a0ed51b3 | 582 | U32 |
864dbfa3 | 583 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
a0ed51b3 LW |
584 | { |
585 | return to_uni_upper(c); /* XXX no locale support yet */ | |
586 | } | |
587 | ||
588 | U32 | |
864dbfa3 | 589 | Perl_to_uni_title_lc(pTHX_ U32 c) |
a0ed51b3 LW |
590 | { |
591 | return to_uni_title(c); /* XXX no locale support yet */ | |
592 | } | |
593 | ||
594 | U32 | |
864dbfa3 | 595 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
a0ed51b3 LW |
596 | { |
597 | return to_uni_lower(c); /* XXX no locale support yet */ | |
598 | } | |
599 | ||
a0ed51b3 | 600 | bool |
864dbfa3 | 601 | Perl_is_utf8_alnum(pTHX_ U8 *p) |
a0ed51b3 | 602 | { |
386d01d6 GS |
603 | if (!is_utf8_char(p)) |
604 | return FALSE; | |
a0ed51b3 | 605 | if (!PL_utf8_alnum) |
e24b16f9 | 606 | PL_utf8_alnum = swash_init("utf8", "IsAlnum", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
607 | return swash_fetch(PL_utf8_alnum, p); |
608 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ | |
609 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ | |
610 | if (!PL_utf8_alnum) | |
611 | PL_utf8_alnum = swash_init("utf8", "", | |
612 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); | |
613 | return swash_fetch(PL_utf8_alnum, p); | |
614 | #endif | |
615 | } | |
616 | ||
617 | bool | |
b8c5462f JH |
618 | Perl_is_utf8_alnumc(pTHX_ U8 *p) |
619 | { | |
386d01d6 GS |
620 | if (!is_utf8_char(p)) |
621 | return FALSE; | |
b8c5462f JH |
622 | if (!PL_utf8_alnum) |
623 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); | |
624 | return swash_fetch(PL_utf8_alnum, p); | |
625 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ | |
626 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ | |
627 | if (!PL_utf8_alnum) | |
628 | PL_utf8_alnum = swash_init("utf8", "", | |
629 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); | |
630 | return swash_fetch(PL_utf8_alnum, p); | |
631 | #endif | |
632 | } | |
633 | ||
634 | bool | |
864dbfa3 | 635 | Perl_is_utf8_idfirst(pTHX_ U8 *p) |
a0ed51b3 LW |
636 | { |
637 | return *p == '_' || is_utf8_alpha(p); | |
638 | } | |
639 | ||
640 | bool | |
864dbfa3 | 641 | Perl_is_utf8_alpha(pTHX_ U8 *p) |
a0ed51b3 | 642 | { |
386d01d6 GS |
643 | if (!is_utf8_char(p)) |
644 | return FALSE; | |
a0ed51b3 | 645 | if (!PL_utf8_alpha) |
e24b16f9 | 646 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
647 | return swash_fetch(PL_utf8_alpha, p); |
648 | } | |
649 | ||
650 | bool | |
b8c5462f JH |
651 | Perl_is_utf8_ascii(pTHX_ U8 *p) |
652 | { | |
386d01d6 GS |
653 | if (!is_utf8_char(p)) |
654 | return FALSE; | |
b8c5462f JH |
655 | if (!PL_utf8_ascii) |
656 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); | |
657 | return swash_fetch(PL_utf8_ascii, p); | |
658 | } | |
659 | ||
660 | bool | |
864dbfa3 | 661 | Perl_is_utf8_space(pTHX_ U8 *p) |
a0ed51b3 | 662 | { |
386d01d6 GS |
663 | if (!is_utf8_char(p)) |
664 | return FALSE; | |
a0ed51b3 | 665 | if (!PL_utf8_space) |
e24b16f9 | 666 | PL_utf8_space = swash_init("utf8", "IsSpace", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
667 | return swash_fetch(PL_utf8_space, p); |
668 | } | |
669 | ||
670 | bool | |
864dbfa3 | 671 | Perl_is_utf8_digit(pTHX_ U8 *p) |
a0ed51b3 | 672 | { |
386d01d6 GS |
673 | if (!is_utf8_char(p)) |
674 | return FALSE; | |
a0ed51b3 | 675 | if (!PL_utf8_digit) |
e24b16f9 | 676 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
677 | return swash_fetch(PL_utf8_digit, p); |
678 | } | |
679 | ||
680 | bool | |
864dbfa3 | 681 | Perl_is_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 | 682 | { |
386d01d6 GS |
683 | if (!is_utf8_char(p)) |
684 | return FALSE; | |
a0ed51b3 | 685 | if (!PL_utf8_upper) |
e24b16f9 | 686 | PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
687 | return swash_fetch(PL_utf8_upper, p); |
688 | } | |
689 | ||
690 | bool | |
864dbfa3 | 691 | Perl_is_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 | 692 | { |
386d01d6 GS |
693 | if (!is_utf8_char(p)) |
694 | return FALSE; | |
a0ed51b3 | 695 | if (!PL_utf8_lower) |
e24b16f9 | 696 | PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
697 | return swash_fetch(PL_utf8_lower, p); |
698 | } | |
699 | ||
700 | bool | |
b8c5462f JH |
701 | Perl_is_utf8_cntrl(pTHX_ U8 *p) |
702 | { | |
386d01d6 GS |
703 | if (!is_utf8_char(p)) |
704 | return FALSE; | |
b8c5462f JH |
705 | if (!PL_utf8_cntrl) |
706 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); | |
707 | return swash_fetch(PL_utf8_cntrl, p); | |
708 | } | |
709 | ||
710 | bool | |
711 | Perl_is_utf8_graph(pTHX_ U8 *p) | |
712 | { | |
386d01d6 GS |
713 | if (!is_utf8_char(p)) |
714 | return FALSE; | |
b8c5462f JH |
715 | if (!PL_utf8_graph) |
716 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); | |
717 | return swash_fetch(PL_utf8_graph, p); | |
718 | } | |
719 | ||
720 | bool | |
864dbfa3 | 721 | Perl_is_utf8_print(pTHX_ U8 *p) |
a0ed51b3 | 722 | { |
386d01d6 GS |
723 | if (!is_utf8_char(p)) |
724 | return FALSE; | |
a0ed51b3 | 725 | if (!PL_utf8_print) |
e24b16f9 | 726 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
727 | return swash_fetch(PL_utf8_print, p); |
728 | } | |
729 | ||
730 | bool | |
b8c5462f JH |
731 | Perl_is_utf8_punct(pTHX_ U8 *p) |
732 | { | |
386d01d6 GS |
733 | if (!is_utf8_char(p)) |
734 | return FALSE; | |
b8c5462f JH |
735 | if (!PL_utf8_punct) |
736 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); | |
737 | return swash_fetch(PL_utf8_punct, p); | |
738 | } | |
739 | ||
740 | bool | |
741 | Perl_is_utf8_xdigit(pTHX_ U8 *p) | |
742 | { | |
386d01d6 GS |
743 | if (!is_utf8_char(p)) |
744 | return FALSE; | |
b8c5462f JH |
745 | if (!PL_utf8_xdigit) |
746 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); | |
747 | return swash_fetch(PL_utf8_xdigit, p); | |
748 | } | |
749 | ||
750 | bool | |
864dbfa3 | 751 | Perl_is_utf8_mark(pTHX_ U8 *p) |
a0ed51b3 | 752 | { |
386d01d6 GS |
753 | if (!is_utf8_char(p)) |
754 | return FALSE; | |
a0ed51b3 | 755 | if (!PL_utf8_mark) |
e24b16f9 | 756 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
a0ed51b3 LW |
757 | return swash_fetch(PL_utf8_mark, p); |
758 | } | |
759 | ||
2104c8d9 | 760 | UV |
864dbfa3 | 761 | Perl_to_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 LW |
762 | { |
763 | UV uv; | |
764 | ||
765 | if (!PL_utf8_toupper) | |
e24b16f9 | 766 | PL_utf8_toupper = swash_init("utf8", "ToUpper", &PL_sv_undef, 4, 0); |
a0ed51b3 LW |
767 | uv = swash_fetch(PL_utf8_toupper, p); |
768 | return uv ? uv : utf8_to_uv(p,0); | |
769 | } | |
770 | ||
2104c8d9 | 771 | UV |
864dbfa3 | 772 | Perl_to_utf8_title(pTHX_ U8 *p) |
a0ed51b3 LW |
773 | { |
774 | UV uv; | |
775 | ||
776 | if (!PL_utf8_totitle) | |
e24b16f9 | 777 | PL_utf8_totitle = swash_init("utf8", "ToTitle", &PL_sv_undef, 4, 0); |
a0ed51b3 LW |
778 | uv = swash_fetch(PL_utf8_totitle, p); |
779 | return uv ? uv : utf8_to_uv(p,0); | |
780 | } | |
781 | ||
2104c8d9 | 782 | UV |
864dbfa3 | 783 | Perl_to_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 LW |
784 | { |
785 | UV uv; | |
786 | ||
787 | if (!PL_utf8_tolower) | |
e24b16f9 | 788 | PL_utf8_tolower = swash_init("utf8", "ToLower", &PL_sv_undef, 4, 0); |
a0ed51b3 LW |
789 | uv = swash_fetch(PL_utf8_tolower, p); |
790 | return uv ? uv : utf8_to_uv(p,0); | |
791 | } | |
792 | ||
793 | /* a "swash" is a swatch hash */ | |
794 | ||
795 | SV* | |
864dbfa3 | 796 | Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 LW |
797 | { |
798 | SV* retval; | |
799 | char tmpbuf[256]; | |
800 | dSP; | |
ce3b816e GS |
801 | |
802 | if (!gv_stashpv(pkg, 0)) { /* demand load utf8 */ | |
803 | ENTER; | |
804 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv); | |
805 | LEAVE; | |
806 | } | |
807 | SPAGAIN; | |
a0ed51b3 LW |
808 | PUSHSTACKi(PERLSI_MAGIC); |
809 | PUSHMARK(SP); | |
810 | EXTEND(SP,5); | |
811 | PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg)))); | |
812 | PUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); | |
813 | PUSHs(listsv); | |
814 | PUSHs(sv_2mortal(newSViv(minbits))); | |
815 | PUSHs(sv_2mortal(newSViv(none))); | |
816 | PUTBACK; | |
817 | ENTER; | |
818 | SAVEI32(PL_hints); | |
819 | PL_hints = 0; | |
820 | save_re_context(); | |
e24b16f9 | 821 | if (PL_curcop == &PL_compiling) /* XXX ought to be handled by lex_start */ |
a0ed51b3 | 822 | strncpy(tmpbuf, PL_tokenbuf, sizeof tmpbuf); |
864dbfa3 | 823 | if (call_method("SWASHNEW", G_SCALAR)) |
e24b16f9 | 824 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 | 825 | else |
e24b16f9 | 826 | retval = &PL_sv_undef; |
a0ed51b3 LW |
827 | LEAVE; |
828 | POPSTACK; | |
e24b16f9 | 829 | if (PL_curcop == &PL_compiling) { |
a0ed51b3 | 830 | strncpy(PL_tokenbuf, tmpbuf, sizeof tmpbuf); |
e24b16f9 | 831 | PL_curcop->op_private = PL_hints; |
a0ed51b3 LW |
832 | } |
833 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) | |
cea2e8a9 | 834 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
a0ed51b3 LW |
835 | return retval; |
836 | } | |
837 | ||
838 | UV | |
864dbfa3 | 839 | Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr) |
a0ed51b3 LW |
840 | { |
841 | HV* hv = (HV*)SvRV(sv); | |
842 | U32 klen = UTF8SKIP(ptr) - 1; | |
843 | U32 off = ptr[klen] & 127; /* NB: 64 bit always 0 when len > 1 */ | |
844 | STRLEN slen; | |
845 | STRLEN needents = (klen ? 64 : 128); | |
dfe13c55 | 846 | U8 *tmps; |
a0ed51b3 LW |
847 | U32 bit; |
848 | SV *retval; | |
849 | ||
850 | /* | |
851 | * This single-entry cache saves about 1/3 of the utf8 overhead in test | |
852 | * suite. (That is, only 7-8% overall over just a hash cache. Still, | |
853 | * it's nothing to sniff at.) Pity we usually come through at least | |
854 | * two function calls to get here... | |
855 | * | |
856 | * NB: this code assumes that swatches are never modified, once generated! | |
857 | */ | |
858 | ||
859 | if (hv == PL_last_swash_hv && | |
860 | klen == PL_last_swash_klen && | |
12ae5dfc | 861 | (!klen || memEQ((char *)ptr,(char *)PL_last_swash_key,klen)) ) |
a0ed51b3 LW |
862 | { |
863 | tmps = PL_last_swash_tmps; | |
864 | slen = PL_last_swash_slen; | |
865 | } | |
866 | else { | |
867 | /* Try our second-level swatch cache, kept in a hash. */ | |
dfe13c55 | 868 | SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE); |
a0ed51b3 LW |
869 | |
870 | /* If not cached, generate it via utf8::SWASHGET */ | |
dfe13c55 | 871 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
a0ed51b3 LW |
872 | dSP; |
873 | ENTER; | |
874 | SAVETMPS; | |
875 | save_re_context(); | |
876 | PUSHSTACKi(PERLSI_MAGIC); | |
877 | PUSHMARK(SP); | |
878 | EXTEND(SP,3); | |
879 | PUSHs((SV*)sv); | |
880 | PUSHs(sv_2mortal(newSViv(utf8_to_uv(ptr, 0) & ~(needents - 1)))); | |
881 | PUSHs(sv_2mortal(newSViv(needents))); | |
882 | PUTBACK; | |
864dbfa3 | 883 | if (call_method("SWASHGET", G_SCALAR)) |
e24b16f9 | 884 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 | 885 | else |
e24b16f9 | 886 | retval = &PL_sv_undef; |
a0ed51b3 LW |
887 | POPSTACK; |
888 | FREETMPS; | |
889 | LEAVE; | |
e24b16f9 GS |
890 | if (PL_curcop == &PL_compiling) |
891 | PL_curcop->op_private = PL_hints; | |
a0ed51b3 | 892 | |
dfe13c55 | 893 | svp = hv_store(hv, (char*)ptr, klen, retval, 0); |
a0ed51b3 | 894 | |
dfe13c55 | 895 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || slen < 8) |
cea2e8a9 | 896 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 LW |
897 | } |
898 | ||
899 | PL_last_swash_hv = hv; | |
900 | PL_last_swash_klen = klen; | |
901 | PL_last_swash_tmps = tmps; | |
902 | PL_last_swash_slen = slen; | |
903 | if (klen) | |
904 | Copy(ptr, PL_last_swash_key, klen, U8); | |
905 | } | |
906 | ||
907 | switch ((slen << 3) / needents) { | |
908 | case 1: | |
909 | bit = 1 << (off & 7); | |
910 | off >>= 3; | |
911 | return (tmps[off] & bit) != 0; | |
912 | case 8: | |
913 | return tmps[off]; | |
914 | case 16: | |
915 | off <<= 1; | |
916 | return (tmps[off] << 8) + tmps[off + 1] ; | |
917 | case 32: | |
918 | off <<= 2; | |
919 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; | |
920 | } | |
cea2e8a9 | 921 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 LW |
922 | return 0; |
923 | } |