Commit | Line | Data |
a0ed51b3 |
1 | /* utf8.c |
2 | * |
bc89e66f |
3 | * Copyright (c) 1998-2001, 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 | |
eebe1485 |
29 | /* |
9041c2e3 |
30 | =for apidoc A|U8*|uvuni_to_utf8|U8 *d|UV uv |
eebe1485 |
31 | |
32 | Adds the UTF8 representation of the Unicode codepoint C<uv> to the end |
33 | of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free |
34 | bytes available. The return value is the pointer to the byte after the |
9041c2e3 |
35 | end of the new character. In other words, |
eebe1485 |
36 | |
9041c2e3 |
37 | d = uvuni_to_utf8(d, uv); |
eebe1485 |
38 | |
39 | is the recommended Unicode-aware way of saying |
40 | |
41 | *(d++) = uv; |
42 | |
43 | =cut |
44 | */ |
45 | |
dfe13c55 |
46 | U8 * |
9041c2e3 |
47 | Perl_uvuni_to_utf8(pTHX_ U8 *d, UV uv) |
a0ed51b3 |
48 | { |
49 | if (uv < 0x80) { |
50 | *d++ = uv; |
51 | return d; |
52 | } |
53 | if (uv < 0x800) { |
54 | *d++ = (( uv >> 6) | 0xc0); |
55 | *d++ = (( uv & 0x3f) | 0x80); |
56 | return d; |
57 | } |
58 | if (uv < 0x10000) { |
59 | *d++ = (( uv >> 12) | 0xe0); |
60 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
61 | *d++ = (( uv & 0x3f) | 0x80); |
62 | return d; |
63 | } |
64 | if (uv < 0x200000) { |
65 | *d++ = (( uv >> 18) | 0xf0); |
66 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
67 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
68 | *d++ = (( uv & 0x3f) | 0x80); |
69 | return d; |
70 | } |
71 | if (uv < 0x4000000) { |
72 | *d++ = (( uv >> 24) | 0xf8); |
73 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
74 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
75 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
76 | *d++ = (( uv & 0x3f) | 0x80); |
77 | return d; |
78 | } |
79 | if (uv < 0x80000000) { |
80 | *d++ = (( uv >> 30) | 0xfc); |
81 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
82 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
83 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
84 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
85 | *d++ = (( uv & 0x3f) | 0x80); |
86 | return d; |
87 | } |
6b8eaf93 |
88 | #ifdef HAS_QUAD |
d7578b48 |
89 | if (uv < UTF8_QUAD_MAX) |
a0ed51b3 |
90 | #endif |
91 | { |
92 | *d++ = 0xfe; /* Can't match U+FEFF! */ |
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 | } |
6b8eaf93 |
101 | #ifdef HAS_QUAD |
a0ed51b3 |
102 | { |
103 | *d++ = 0xff; /* Can't match U+FFFE! */ |
3c77ea2b |
104 | *d++ = 0x80; /* 6 Reserved bits */ |
105 | *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */ |
106 | *d++ = (((uv >> 54) & 0x3f) | 0x80); |
107 | *d++ = (((uv >> 48) & 0x3f) | 0x80); |
108 | *d++ = (((uv >> 42) & 0x3f) | 0x80); |
a0ed51b3 |
109 | *d++ = (((uv >> 36) & 0x3f) | 0x80); |
110 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
111 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
112 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
113 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
114 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
115 | *d++ = (( uv & 0x3f) | 0x80); |
116 | return d; |
117 | } |
118 | #endif |
119 | } |
120 | |
eebe1485 |
121 | /* |
9041c2e3 |
122 | =for apidoc A|U8*|uvchr_to_utf8|U8 *d|UV uv |
123 | |
124 | Adds the UTF8 representation of the Native codepoint C<uv> to the end |
125 | of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free |
126 | bytes available. The return value is the pointer to the byte after the |
127 | end of the new character. In other words, |
128 | |
129 | d = uvchr_to_utf8(d, uv); |
130 | |
131 | is the recommended wide native character-aware way of saying |
132 | |
133 | *(d++) = uv; |
134 | |
135 | =cut |
136 | */ |
137 | |
138 | U8 * |
139 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) |
140 | { |
141 | if (uv < 0x100) |
142 | uv = NATIVE_TO_ASCII(uv); |
143 | return Perl_uvuni_to_utf8(aTHX_ d, uv); |
144 | } |
145 | |
146 | |
147 | /* |
eebe1485 |
148 | =for apidoc A|STRLEN|is_utf8_char|U8 *s |
149 | |
5da9da9e |
150 | Tests if some arbitrary number of bytes begins in a valid UTF-8 |
151 | character. Note that an ASCII character is a valid UTF-8 character. |
152 | The actual number of bytes in the UTF-8 character will be returned if |
153 | it is valid, otherwise 0. |
9041c2e3 |
154 | |
5da9da9e |
155 | =cut */ |
067a85ef |
156 | STRLEN |
386d01d6 |
157 | Perl_is_utf8_char(pTHX_ U8 *s) |
158 | { |
159 | U8 u = *s; |
067a85ef |
160 | STRLEN slen, len; |
161 | UV uv, ouv; |
386d01d6 |
162 | |
60006e79 |
163 | if (UTF8_IS_ASCII(u)) |
386d01d6 |
164 | return 1; |
165 | |
60006e79 |
166 | if (!UTF8_IS_START(u)) |
386d01d6 |
167 | return 0; |
168 | |
9f07fdcd |
169 | len = UTF8SKIP(s); |
386d01d6 |
170 | |
60006e79 |
171 | if (len < 2 || !UTF8_IS_CONTINUATION(s[1])) |
067a85ef |
172 | return 0; |
173 | |
386d01d6 |
174 | slen = len - 1; |
175 | s++; |
067a85ef |
176 | uv = u; |
177 | ouv = uv; |
386d01d6 |
178 | while (slen--) { |
60006e79 |
179 | if (!UTF8_IS_CONTINUATION(*s)) |
386d01d6 |
180 | return 0; |
8850bf83 |
181 | uv = UTF8_ACCUMULATE(uv, *s); |
067a85ef |
182 | if (uv < ouv) |
183 | return 0; |
184 | ouv = uv; |
386d01d6 |
185 | s++; |
186 | } |
067a85ef |
187 | |
5bbb0b5a |
188 | if (UNISKIP(uv) < len) |
067a85ef |
189 | return 0; |
190 | |
386d01d6 |
191 | return len; |
192 | } |
193 | |
6662521e |
194 | /* |
eebe1485 |
195 | =for apidoc A|bool|is_utf8_string|U8 *s|STRLEN len |
6662521e |
196 | |
5da9da9e |
197 | Returns true if first C<len> bytes of the given string form a valid UTF8 |
198 | string, false otherwise. Note that 'a valid UTF8 string' does not mean |
199 | 'a string that contains UTF8' because a valid ASCII string is a valid |
200 | UTF8 string. |
6662521e |
201 | |
202 | =cut |
203 | */ |
204 | |
8e84507e |
205 | bool |
6662521e |
206 | Perl_is_utf8_string(pTHX_ U8 *s, STRLEN len) |
207 | { |
067a85ef |
208 | U8* x = s; |
1aa99e6b |
209 | U8* send; |
067a85ef |
210 | STRLEN c; |
211 | |
1aa99e6b |
212 | if (!len) |
6cd5fe39 |
213 | len = strlen((char *)s); |
1aa99e6b |
214 | send = s + len; |
215 | |
6662521e |
216 | while (x < send) { |
217 | c = is_utf8_char(x); |
067a85ef |
218 | if (!c) |
219 | return FALSE; |
6662521e |
220 | x += c; |
6662521e |
221 | } |
60006e79 |
222 | if (x != send) |
223 | return FALSE; |
067a85ef |
224 | |
225 | return TRUE; |
6662521e |
226 | } |
227 | |
67e989fb |
228 | /* |
9041c2e3 |
229 | =for apidoc A|UV|utf8n_to_uvuni|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
67e989fb |
230 | |
9041c2e3 |
231 | Bottom level UTF-8 decode routine. |
232 | Returns the unicode code point value of the first character in the string C<s> |
ba210ebe |
233 | which is assumed to be in UTF8 encoding and no longer than C<curlen>; |
7df053ec |
234 | C<retlen> will be set to the length, in bytes, of that character. |
67e989fb |
235 | |
236 | If C<s> does not point to a well-formed UTF8 character, the behaviour |
dcad2880 |
237 | is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY, |
238 | it is assumed that the caller will raise a warning, and this function |
28d3d195 |
239 | will silently just set C<retlen> to C<-1> and return zero. If the |
240 | C<flags> does not contain UTF8_CHECK_ONLY, warnings about |
241 | malformations will be given, C<retlen> will be set to the expected |
242 | length of the UTF-8 character in bytes, and zero will be returned. |
243 | |
244 | The C<flags> can also contain various flags to allow deviations from |
245 | the strict UTF-8 encoding (see F<utf8.h>). |
67e989fb |
246 | |
9041c2e3 |
247 | Most code should use utf8_to_uvchr() rather than call this directly. |
248 | |
dcad2880 |
249 | =cut */ |
67e989fb |
250 | |
a0ed51b3 |
251 | UV |
9041c2e3 |
252 | Perl_utf8n_to_uvuni(pTHX_ U8* s, STRLEN curlen, STRLEN* retlen, U32 flags) |
a0ed51b3 |
253 | { |
ba210ebe |
254 | UV uv = *s, ouv; |
255 | STRLEN len = 1; |
7bf1b6bb |
256 | #ifdef EBCDIC |
257 | bool dowarn = 0; |
258 | #else |
ba210ebe |
259 | bool dowarn = ckWARN_d(WARN_UTF8); |
7bf1b6bb |
260 | #endif |
ba210ebe |
261 | STRLEN expectlen = 0; |
a0dbb045 |
262 | U32 warning = 0; |
263 | |
264 | /* This list is a superset of the UTF8_ALLOW_XXX. */ |
265 | |
266 | #define UTF8_WARN_EMPTY 1 |
267 | #define UTF8_WARN_CONTINUATION 2 |
268 | #define UTF8_WARN_NON_CONTINUATION 3 |
269 | #define UTF8_WARN_FE_FF 4 |
270 | #define UTF8_WARN_SHORT 5 |
271 | #define UTF8_WARN_OVERFLOW 6 |
272 | #define UTF8_WARN_SURROGATE 7 |
273 | #define UTF8_WARN_BOM 8 |
274 | #define UTF8_WARN_LONG 9 |
275 | #define UTF8_WARN_FFFF 10 |
276 | |
277 | if (curlen == 0 && |
278 | !(flags & UTF8_ALLOW_EMPTY)) { |
279 | warning = UTF8_WARN_EMPTY; |
0c443dc2 |
280 | goto malformed; |
281 | } |
282 | |
421a8bf2 |
283 | if (UTF8_IS_ASCII(uv)) { |
a0ed51b3 |
284 | if (retlen) |
285 | *retlen = 1; |
9041c2e3 |
286 | return (UV) (*s); |
a0ed51b3 |
287 | } |
67e989fb |
288 | |
421a8bf2 |
289 | if (UTF8_IS_CONTINUATION(uv) && |
fcc8fcf6 |
290 | !(flags & UTF8_ALLOW_CONTINUATION)) { |
a0dbb045 |
291 | warning = UTF8_WARN_CONTINUATION; |
ba210ebe |
292 | goto malformed; |
293 | } |
294 | |
421a8bf2 |
295 | if (UTF8_IS_START(uv) && curlen > 1 && !UTF8_IS_CONTINUATION(s[1]) && |
fcc8fcf6 |
296 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
297 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
298 | goto malformed; |
299 | } |
9041c2e3 |
300 | |
fcc8fcf6 |
301 | if ((uv == 0xfe || uv == 0xff) && |
302 | !(flags & UTF8_ALLOW_FE_FF)) { |
a0dbb045 |
303 | warning = UTF8_WARN_FE_FF; |
ba210ebe |
304 | goto malformed; |
a0ed51b3 |
305 | } |
fcc8fcf6 |
306 | |
ba210ebe |
307 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
308 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } |
309 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } |
310 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } |
311 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
312 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
3c77ea2b |
313 | else { len = 13; uv = 0; } /* whoa! */ |
fcc8fcf6 |
314 | |
a0ed51b3 |
315 | if (retlen) |
316 | *retlen = len; |
9041c2e3 |
317 | |
ba210ebe |
318 | expectlen = len; |
319 | |
fcc8fcf6 |
320 | if ((curlen < expectlen) && |
321 | !(flags & UTF8_ALLOW_SHORT)) { |
a0dbb045 |
322 | warning = UTF8_WARN_SHORT; |
ba210ebe |
323 | goto malformed; |
324 | } |
325 | |
326 | len--; |
a0ed51b3 |
327 | s++; |
ba210ebe |
328 | ouv = uv; |
329 | |
a0ed51b3 |
330 | while (len--) { |
421a8bf2 |
331 | if (!UTF8_IS_CONTINUATION(*s) && |
332 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
333 | s--; |
334 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
335 | goto malformed; |
a0ed51b3 |
336 | } |
337 | else |
8850bf83 |
338 | uv = UTF8_ACCUMULATE(uv, *s); |
a0dbb045 |
339 | if (!(uv > ouv)) { |
340 | /* These cannot be allowed. */ |
341 | if (uv == ouv) { |
342 | if (!(flags & UTF8_ALLOW_LONG)) { |
343 | warning = UTF8_WARN_LONG; |
344 | goto malformed; |
345 | } |
346 | } |
347 | else { /* uv < ouv */ |
348 | /* This cannot be allowed. */ |
349 | warning = UTF8_WARN_OVERFLOW; |
350 | goto malformed; |
351 | } |
ba210ebe |
352 | } |
353 | s++; |
354 | ouv = uv; |
355 | } |
356 | |
421a8bf2 |
357 | if (UNICODE_IS_SURROGATE(uv) && |
fcc8fcf6 |
358 | !(flags & UTF8_ALLOW_SURROGATE)) { |
a0dbb045 |
359 | warning = UTF8_WARN_SURROGATE; |
ba210ebe |
360 | goto malformed; |
421a8bf2 |
361 | } else if (UNICODE_IS_BYTE_ORDER_MARK(uv) && |
fcc8fcf6 |
362 | !(flags & UTF8_ALLOW_BOM)) { |
a0dbb045 |
363 | warning = UTF8_WARN_BOM; |
ba210ebe |
364 | goto malformed; |
fcc8fcf6 |
365 | } else if ((expectlen > UNISKIP(uv)) && |
366 | !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 |
367 | warning = UTF8_WARN_LONG; |
ba210ebe |
368 | goto malformed; |
421a8bf2 |
369 | } else if (UNICODE_IS_ILLEGAL(uv) && |
a9917092 |
370 | !(flags & UTF8_ALLOW_FFFF)) { |
a0dbb045 |
371 | warning = UTF8_WARN_FFFF; |
a9917092 |
372 | goto malformed; |
a0ed51b3 |
373 | } |
ba210ebe |
374 | |
a0ed51b3 |
375 | return uv; |
ba210ebe |
376 | |
377 | malformed: |
378 | |
fcc8fcf6 |
379 | if (flags & UTF8_CHECK_ONLY) { |
ba210ebe |
380 | if (retlen) |
cc366d4b |
381 | *retlen = -1; |
ba210ebe |
382 | return 0; |
383 | } |
384 | |
a0dbb045 |
385 | if (dowarn) { |
386 | SV* sv = sv_2mortal(newSVpv("Malformed UTF-8 character ", 0)); |
387 | |
388 | switch (warning) { |
389 | case 0: /* Intentionally empty. */ break; |
390 | case UTF8_WARN_EMPTY: |
391 | Perl_sv_catpvf(aTHX_ sv, "(empty string)"); |
392 | break; |
393 | case UTF8_WARN_CONTINUATION: |
394 | Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf")", uv); |
395 | break; |
396 | case UTF8_WARN_NON_CONTINUATION: |
397 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf" after start byte 0x%02"UVxf")", |
398 | (UV)s[1], uv); |
399 | break; |
400 | case UTF8_WARN_FE_FF: |
401 | Perl_sv_catpvf(aTHX_ sv, "(byte 0x%02"UVxf")", uv); |
402 | break; |
403 | case UTF8_WARN_SHORT: |
404 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d)", |
405 | curlen, curlen == 1 ? "" : "s", expectlen); |
406 | break; |
407 | case UTF8_WARN_OVERFLOW: |
408 | Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x)", |
409 | ouv, *s); |
410 | break; |
411 | case UTF8_WARN_SURROGATE: |
412 | Perl_sv_catpvf(aTHX_ sv, "(UTF-16 surrogate 0x%04"UVxf")", uv); |
413 | break; |
414 | case UTF8_WARN_BOM: |
415 | Perl_sv_catpvf(aTHX_ sv, "(byte order mark 0x%04"UVxf")", uv); |
416 | break; |
417 | case UTF8_WARN_LONG: |
418 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d)", |
419 | expectlen, expectlen == 1 ? "": "s", UNISKIP(uv)); |
420 | break; |
421 | case UTF8_WARN_FFFF: |
422 | Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv); |
423 | break; |
424 | default: |
425 | Perl_sv_catpvf(aTHX_ sv, "(unknown reason)"); |
426 | break; |
427 | } |
428 | |
429 | if (warning) { |
430 | char *s = SvPVX(sv); |
431 | |
432 | if (PL_op) |
433 | Perl_warner(aTHX_ WARN_UTF8, |
434 | "%s in %s", s, PL_op_desc[PL_op->op_type]); |
435 | else |
436 | Perl_warner(aTHX_ WARN_UTF8, "%s", s); |
437 | } |
438 | } |
439 | |
ba210ebe |
440 | if (retlen) |
28d3d195 |
441 | *retlen = expectlen ? expectlen : len; |
ba210ebe |
442 | |
28d3d195 |
443 | return 0; |
a0ed51b3 |
444 | } |
445 | |
8e84507e |
446 | /* |
9041c2e3 |
447 | =for apidoc A|U8* s|utf8n_to_uvchr|STRLEN curlen, STRLEN *retlen, U32 flags |
8e84507e |
448 | |
9041c2e3 |
449 | Returns the native character value of the first character in the string C<s> |
8e84507e |
450 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
7df053ec |
451 | length, in bytes, of that character. |
8e84507e |
452 | |
9041c2e3 |
453 | Allows length and flags to be passed to low level routine. |
454 | |
455 | =cut |
456 | */ |
457 | |
458 | UV |
459 | Perl_utf8n_to_uvchr(pTHX_ U8* s, STRLEN curlen, STRLEN* retlen, U32 flags) |
460 | { |
461 | UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); |
462 | if (uv < 0x100) |
463 | return (UV) ASCII_TO_NATIVE(uv); |
464 | return uv; |
465 | } |
466 | |
467 | /* |
468 | =for apidoc A|U8* s|utf8_to_uvchr|STRLEN *retlen |
469 | |
470 | Returns the native character value of the first character in the string C<s> |
471 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
472 | length, in bytes, of that character. |
473 | |
474 | If C<s> does not point to a well-formed UTF8 character, zero is |
475 | returned and retlen is set, if possible, to -1. |
476 | |
477 | =cut |
478 | */ |
479 | |
480 | UV |
481 | Perl_utf8_to_uvchr(pTHX_ U8* s, STRLEN* retlen) |
482 | { |
483 | return Perl_utf8n_to_uvchr(aTHX_ s, UTF8_MAXLEN, retlen, 0); |
484 | } |
485 | |
486 | /* |
487 | =for apidoc A|U8* s|utf8_to_uvuni|STRLEN *retlen |
488 | |
489 | Returns the Unicode code point of the first character in the string C<s> |
490 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
491 | length, in bytes, of that character. |
492 | |
493 | This function should only be used when returned UV is considered |
494 | an index into the Unicode semantic tables (e.g. swashes). |
495 | |
ba210ebe |
496 | If C<s> does not point to a well-formed UTF8 character, zero is |
497 | returned and retlen is set, if possible, to -1. |
8e84507e |
498 | |
499 | =cut |
500 | */ |
501 | |
502 | UV |
9041c2e3 |
503 | Perl_utf8_to_uvuni(pTHX_ U8* s, STRLEN* retlen) |
8e84507e |
504 | { |
9041c2e3 |
505 | /* Call the low level routine asking for checks */ |
506 | return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXLEN, retlen, 0); |
8e84507e |
507 | } |
508 | |
b76347f2 |
509 | /* |
eebe1485 |
510 | =for apidoc A|STRLEN|utf8_length|U8* s|U8 *e |
b76347f2 |
511 | |
512 | Return the length of the UTF-8 char encoded string C<s> in characters. |
02eb7b47 |
513 | Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end |
514 | up past C<e>, croaks. |
b76347f2 |
515 | |
516 | =cut |
517 | */ |
518 | |
519 | STRLEN |
520 | Perl_utf8_length(pTHX_ U8* s, U8* e) |
521 | { |
522 | STRLEN len = 0; |
523 | |
8850bf83 |
524 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
525 | * the bitops (especially ~) can create illegal UTF-8. |
526 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
527 | |
b76347f2 |
528 | if (e < s) |
02eb7b47 |
529 | Perl_croak(aTHX_ "panic: utf8_length: unexpected end"); |
b76347f2 |
530 | while (s < e) { |
02eb7b47 |
531 | U8 t = UTF8SKIP(s); |
b76347f2 |
532 | |
533 | if (e - s < t) |
02eb7b47 |
534 | Perl_croak(aTHX_ "panic: utf8_length: unaligned end"); |
b76347f2 |
535 | s += t; |
536 | len++; |
537 | } |
538 | |
539 | return len; |
540 | } |
541 | |
b06226ff |
542 | /* |
eebe1485 |
543 | =for apidoc A|IV|utf8_distance|U8 *a|U8 *b |
b06226ff |
544 | |
545 | Returns the number of UTF8 characters between the UTF-8 pointers C<a> |
546 | and C<b>. |
547 | |
548 | WARNING: use only if you *know* that the pointers point inside the |
549 | same UTF-8 buffer. |
550 | |
551 | =cut */ |
a0ed51b3 |
552 | |
02eb7b47 |
553 | IV |
864dbfa3 |
554 | Perl_utf8_distance(pTHX_ U8 *a, U8 *b) |
a0ed51b3 |
555 | { |
02eb7b47 |
556 | IV off = 0; |
557 | |
8850bf83 |
558 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
559 | * the bitops (especially ~) can create illegal UTF-8. |
560 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
561 | |
a0ed51b3 |
562 | if (a < b) { |
563 | while (a < b) { |
02eb7b47 |
564 | U8 c = UTF8SKIP(a); |
565 | |
566 | if (b - a < c) |
567 | Perl_croak(aTHX_ "panic: utf8_distance: unaligned end"); |
568 | a += c; |
a0ed51b3 |
569 | off--; |
570 | } |
571 | } |
572 | else { |
573 | while (b < a) { |
02eb7b47 |
574 | U8 c = UTF8SKIP(b); |
575 | |
576 | if (a - b < c) |
577 | Perl_croak(aTHX_ "panic: utf8_distance: unaligned end"); |
578 | b += c; |
a0ed51b3 |
579 | off++; |
580 | } |
581 | } |
02eb7b47 |
582 | |
a0ed51b3 |
583 | return off; |
584 | } |
585 | |
b06226ff |
586 | /* |
eebe1485 |
587 | =for apidoc A|U8*|utf8_hop|U8 *s|I32 off |
b06226ff |
588 | |
8850bf83 |
589 | Return the UTF-8 pointer C<s> displaced by C<off> characters, either |
590 | forward or backward. |
b06226ff |
591 | |
592 | WARNING: do not use the following unless you *know* C<off> is within |
8850bf83 |
593 | the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned |
594 | on the first byte of character or just after the last byte of a character. |
b06226ff |
595 | |
596 | =cut */ |
a0ed51b3 |
597 | |
598 | U8 * |
864dbfa3 |
599 | Perl_utf8_hop(pTHX_ U8 *s, I32 off) |
a0ed51b3 |
600 | { |
8850bf83 |
601 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g |
602 | * the bitops (especially ~) can create illegal UTF-8. |
603 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
604 | |
a0ed51b3 |
605 | if (off >= 0) { |
606 | while (off--) |
607 | s += UTF8SKIP(s); |
608 | } |
609 | else { |
610 | while (off++) { |
611 | s--; |
8850bf83 |
612 | while (UTF8_IS_CONTINUATION(*s)) |
613 | s--; |
a0ed51b3 |
614 | } |
615 | } |
616 | return s; |
617 | } |
618 | |
6940069f |
619 | /* |
eebe1485 |
620 | =for apidoc A|U8 *|utf8_to_bytes|U8 *s|STRLEN *len |
6940069f |
621 | |
246fae53 |
622 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
623 | Unlike C<bytes_to_utf8>, this over-writes the original string, and |
624 | updates len to contain the new length. |
67e989fb |
625 | Returns zero on failure, setting C<len> to -1. |
6940069f |
626 | |
627 | =cut |
628 | */ |
629 | |
630 | U8 * |
246fae53 |
631 | Perl_utf8_to_bytes(pTHX_ U8* s, STRLEN *len) |
6940069f |
632 | { |
6940069f |
633 | U8 *send; |
634 | U8 *d; |
dcad2880 |
635 | U8 *save = s; |
246fae53 |
636 | |
637 | /* ensure valid UTF8 and chars < 256 before updating string */ |
dcad2880 |
638 | for (send = s + *len; s < send; ) { |
639 | U8 c = *s++; |
640 | |
9f9ab905 |
641 | if (c >= 0x80 && |
dcad2880 |
642 | ((s >= send) || |
643 | ((*s++ & 0xc0) != 0x80) || ((c & 0xfe) != 0xc2))) { |
644 | *len = -1; |
645 | return 0; |
646 | } |
246fae53 |
647 | } |
dcad2880 |
648 | |
649 | d = s = save; |
6940069f |
650 | while (s < send) { |
ed646e6e |
651 | STRLEN ulen; |
9041c2e3 |
652 | *d++ = (U8)utf8_to_uvchr(s, &ulen); |
ed646e6e |
653 | s += ulen; |
6940069f |
654 | } |
655 | *d = '\0'; |
246fae53 |
656 | *len = d - save; |
6940069f |
657 | return save; |
658 | } |
659 | |
660 | /* |
f9a63242 |
661 | =for apidoc A|U8 *|bytes_from_utf8|U8 *s|STRLEN *len|bool *is_utf8 |
662 | |
663 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
664 | Unlike <utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to |
ef9edfd0 |
665 | the newly-created string, and updates C<len> to contain the new |
666 | length. Returns the original string if no conversion occurs, C<len> |
667 | is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to |
668 | 0 if C<s> is converted or contains all 7bit characters. |
f9a63242 |
669 | |
670 | =cut */ |
671 | |
672 | U8 * |
673 | Perl_bytes_from_utf8(pTHX_ U8* s, STRLEN *len, bool *is_utf8) |
674 | { |
675 | U8 *send; |
676 | U8 *d; |
677 | U8 *start = s; |
678 | I32 count = 0; |
679 | |
680 | if (!*is_utf8) |
681 | return start; |
682 | |
ef9edfd0 |
683 | /* ensure valid UTF8 and chars < 256 before converting string */ |
f9a63242 |
684 | for (send = s + *len; s < send;) { |
685 | U8 c = *s++; |
686 | if (!UTF8_IS_ASCII(c)) { |
687 | if (UTF8_IS_CONTINUATION(c) || s >= send || |
df84a23b |
688 | !UTF8_IS_CONTINUATION(*s) || UTF8_IS_DOWNGRADEABLE_START(c)) |
f9a63242 |
689 | return start; |
690 | s++, count++; |
691 | } |
692 | } |
693 | |
694 | *is_utf8 = 0; |
695 | |
696 | if (!count) |
697 | return start; |
698 | |
699 | Newz(801, d, (*len) - count + 1, U8); |
ef9edfd0 |
700 | s = start; start = d; |
f9a63242 |
701 | while (s < send) { |
702 | U8 c = *s++; |
90f44359 |
703 | |
f9a63242 |
704 | if (UTF8_IS_ASCII(c)) |
705 | *d++ = c; |
706 | else |
90f44359 |
707 | *d++ = UTF8_ACCUMULATE(c, *s++); |
f9a63242 |
708 | } |
709 | *d = '\0'; |
710 | *len = d - start; |
711 | return start; |
712 | } |
713 | |
714 | /* |
eebe1485 |
715 | =for apidoc A|U8 *|bytes_to_utf8|U8 *s|STRLEN *len |
6940069f |
716 | |
717 | Converts a string C<s> of length C<len> from ASCII into UTF8 encoding. |
6662521e |
718 | Returns a pointer to the newly-created string, and sets C<len> to |
719 | reflect the new length. |
6940069f |
720 | |
497711e7 |
721 | =cut |
6940069f |
722 | */ |
723 | |
724 | U8* |
6662521e |
725 | Perl_bytes_to_utf8(pTHX_ U8* s, STRLEN *len) |
6940069f |
726 | { |
6940069f |
727 | U8 *send; |
728 | U8 *d; |
729 | U8 *dst; |
6662521e |
730 | send = s + (*len); |
6940069f |
731 | |
6662521e |
732 | Newz(801, d, (*len) * 2 + 1, U8); |
6940069f |
733 | dst = d; |
734 | |
735 | while (s < send) { |
90f44359 |
736 | if (UTF8_IS_ASCII(*s)) |
6940069f |
737 | *d++ = *s++; |
738 | else { |
739 | UV uv = *s++; |
90f44359 |
740 | |
741 | *d++ = UTF8_EIGHT_BIT_HI(uv); |
742 | *d++ = UTF8_EIGHT_BIT_LO(uv); |
6940069f |
743 | } |
744 | } |
745 | *d = '\0'; |
6662521e |
746 | *len = d-dst; |
6940069f |
747 | return dst; |
748 | } |
749 | |
a0ed51b3 |
750 | /* |
dea0fc0b |
751 | * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8. |
a0ed51b3 |
752 | * |
753 | * Destination must be pre-extended to 3/2 source. Do not use in-place. |
754 | * We optimize for native, for obvious reasons. */ |
755 | |
756 | U8* |
dea0fc0b |
757 | Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
758 | { |
dea0fc0b |
759 | U8* pend; |
760 | U8* dstart = d; |
761 | |
762 | if (bytelen & 1) |
a7867d0a |
763 | Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen"); |
dea0fc0b |
764 | |
765 | pend = p + bytelen; |
766 | |
a0ed51b3 |
767 | while (p < pend) { |
dea0fc0b |
768 | UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */ |
769 | p += 2; |
a0ed51b3 |
770 | if (uv < 0x80) { |
771 | *d++ = uv; |
772 | continue; |
773 | } |
774 | if (uv < 0x800) { |
775 | *d++ = (( uv >> 6) | 0xc0); |
776 | *d++ = (( uv & 0x3f) | 0x80); |
777 | continue; |
778 | } |
779 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ |
dea0fc0b |
780 | UV low = *p++; |
781 | if (low < 0xdc00 || low >= 0xdfff) |
782 | Perl_croak(aTHX_ "Malformed UTF-16 surrogate"); |
a0ed51b3 |
783 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
784 | } |
785 | if (uv < 0x10000) { |
786 | *d++ = (( uv >> 12) | 0xe0); |
787 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
788 | *d++ = (( uv & 0x3f) | 0x80); |
789 | continue; |
790 | } |
791 | else { |
792 | *d++ = (( uv >> 18) | 0xf0); |
793 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
794 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
795 | *d++ = (( uv & 0x3f) | 0x80); |
796 | continue; |
797 | } |
798 | } |
dea0fc0b |
799 | *newlen = d - dstart; |
a0ed51b3 |
800 | return d; |
801 | } |
802 | |
803 | /* Note: this one is slightly destructive of the source. */ |
804 | |
805 | U8* |
dea0fc0b |
806 | Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
807 | { |
808 | U8* s = (U8*)p; |
809 | U8* send = s + bytelen; |
810 | while (s < send) { |
811 | U8 tmp = s[0]; |
812 | s[0] = s[1]; |
813 | s[1] = tmp; |
814 | s += 2; |
815 | } |
dea0fc0b |
816 | return utf16_to_utf8(p, d, bytelen, newlen); |
a0ed51b3 |
817 | } |
818 | |
819 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ |
820 | |
821 | bool |
864dbfa3 |
822 | Perl_is_uni_alnum(pTHX_ U32 c) |
a0ed51b3 |
823 | { |
ad391ad9 |
824 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
825 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
826 | return is_utf8_alnum(tmpbuf); |
827 | } |
828 | |
829 | bool |
b8c5462f |
830 | Perl_is_uni_alnumc(pTHX_ U32 c) |
831 | { |
ad391ad9 |
832 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
833 | uvuni_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
834 | return is_utf8_alnumc(tmpbuf); |
835 | } |
836 | |
837 | bool |
864dbfa3 |
838 | Perl_is_uni_idfirst(pTHX_ U32 c) |
a0ed51b3 |
839 | { |
ad391ad9 |
840 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
841 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
842 | return is_utf8_idfirst(tmpbuf); |
843 | } |
844 | |
845 | bool |
864dbfa3 |
846 | Perl_is_uni_alpha(pTHX_ U32 c) |
a0ed51b3 |
847 | { |
ad391ad9 |
848 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
849 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
850 | return is_utf8_alpha(tmpbuf); |
851 | } |
852 | |
853 | bool |
4d61ec05 |
854 | Perl_is_uni_ascii(pTHX_ U32 c) |
855 | { |
ad391ad9 |
856 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
857 | uvuni_to_utf8(tmpbuf, (UV)c); |
4d61ec05 |
858 | return is_utf8_ascii(tmpbuf); |
859 | } |
860 | |
861 | bool |
864dbfa3 |
862 | Perl_is_uni_space(pTHX_ U32 c) |
a0ed51b3 |
863 | { |
ad391ad9 |
864 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
865 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
866 | return is_utf8_space(tmpbuf); |
867 | } |
868 | |
869 | bool |
864dbfa3 |
870 | Perl_is_uni_digit(pTHX_ U32 c) |
a0ed51b3 |
871 | { |
ad391ad9 |
872 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
873 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
874 | return is_utf8_digit(tmpbuf); |
875 | } |
876 | |
877 | bool |
864dbfa3 |
878 | Perl_is_uni_upper(pTHX_ U32 c) |
a0ed51b3 |
879 | { |
ad391ad9 |
880 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
881 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
882 | return is_utf8_upper(tmpbuf); |
883 | } |
884 | |
885 | bool |
864dbfa3 |
886 | Perl_is_uni_lower(pTHX_ U32 c) |
a0ed51b3 |
887 | { |
ad391ad9 |
888 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
889 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
890 | return is_utf8_lower(tmpbuf); |
891 | } |
892 | |
893 | bool |
b8c5462f |
894 | Perl_is_uni_cntrl(pTHX_ U32 c) |
895 | { |
ad391ad9 |
896 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
897 | uvuni_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
898 | return is_utf8_cntrl(tmpbuf); |
899 | } |
900 | |
901 | bool |
902 | Perl_is_uni_graph(pTHX_ U32 c) |
903 | { |
ad391ad9 |
904 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
905 | uvuni_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
906 | return is_utf8_graph(tmpbuf); |
907 | } |
908 | |
909 | bool |
864dbfa3 |
910 | Perl_is_uni_print(pTHX_ U32 c) |
a0ed51b3 |
911 | { |
ad391ad9 |
912 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
913 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
914 | return is_utf8_print(tmpbuf); |
915 | } |
916 | |
b8c5462f |
917 | bool |
f248d071 |
918 | Perl_is_uni_punct(pTHX_ U32 c) |
b8c5462f |
919 | { |
ad391ad9 |
920 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
921 | uvuni_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
922 | return is_utf8_punct(tmpbuf); |
923 | } |
924 | |
4d61ec05 |
925 | bool |
926 | Perl_is_uni_xdigit(pTHX_ U32 c) |
927 | { |
ad391ad9 |
928 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
929 | uvuni_to_utf8(tmpbuf, (UV)c); |
4d61ec05 |
930 | return is_utf8_xdigit(tmpbuf); |
931 | } |
932 | |
a0ed51b3 |
933 | U32 |
864dbfa3 |
934 | Perl_to_uni_upper(pTHX_ U32 c) |
a0ed51b3 |
935 | { |
ad391ad9 |
936 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
937 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
938 | return to_utf8_upper(tmpbuf); |
939 | } |
940 | |
941 | U32 |
864dbfa3 |
942 | Perl_to_uni_title(pTHX_ U32 c) |
a0ed51b3 |
943 | { |
ad391ad9 |
944 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
945 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
946 | return to_utf8_title(tmpbuf); |
947 | } |
948 | |
949 | U32 |
864dbfa3 |
950 | Perl_to_uni_lower(pTHX_ U32 c) |
a0ed51b3 |
951 | { |
ad391ad9 |
952 | U8 tmpbuf[UTF8_MAXLEN+1]; |
9041c2e3 |
953 | uvuni_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
954 | return to_utf8_lower(tmpbuf); |
955 | } |
956 | |
957 | /* for now these all assume no locale info available for Unicode > 255 */ |
958 | |
959 | bool |
864dbfa3 |
960 | Perl_is_uni_alnum_lc(pTHX_ U32 c) |
a0ed51b3 |
961 | { |
962 | return is_uni_alnum(c); /* XXX no locale support yet */ |
963 | } |
964 | |
965 | bool |
b8c5462f |
966 | Perl_is_uni_alnumc_lc(pTHX_ U32 c) |
967 | { |
968 | return is_uni_alnumc(c); /* XXX no locale support yet */ |
969 | } |
970 | |
971 | bool |
864dbfa3 |
972 | Perl_is_uni_idfirst_lc(pTHX_ U32 c) |
a0ed51b3 |
973 | { |
974 | return is_uni_idfirst(c); /* XXX no locale support yet */ |
975 | } |
976 | |
977 | bool |
864dbfa3 |
978 | Perl_is_uni_alpha_lc(pTHX_ U32 c) |
a0ed51b3 |
979 | { |
980 | return is_uni_alpha(c); /* XXX no locale support yet */ |
981 | } |
982 | |
983 | bool |
4d61ec05 |
984 | Perl_is_uni_ascii_lc(pTHX_ U32 c) |
985 | { |
986 | return is_uni_ascii(c); /* XXX no locale support yet */ |
987 | } |
988 | |
989 | bool |
864dbfa3 |
990 | Perl_is_uni_space_lc(pTHX_ U32 c) |
a0ed51b3 |
991 | { |
992 | return is_uni_space(c); /* XXX no locale support yet */ |
993 | } |
994 | |
995 | bool |
864dbfa3 |
996 | Perl_is_uni_digit_lc(pTHX_ U32 c) |
a0ed51b3 |
997 | { |
998 | return is_uni_digit(c); /* XXX no locale support yet */ |
999 | } |
1000 | |
1001 | bool |
864dbfa3 |
1002 | Perl_is_uni_upper_lc(pTHX_ U32 c) |
a0ed51b3 |
1003 | { |
1004 | return is_uni_upper(c); /* XXX no locale support yet */ |
1005 | } |
1006 | |
1007 | bool |
864dbfa3 |
1008 | Perl_is_uni_lower_lc(pTHX_ U32 c) |
a0ed51b3 |
1009 | { |
1010 | return is_uni_lower(c); /* XXX no locale support yet */ |
1011 | } |
1012 | |
1013 | bool |
b8c5462f |
1014 | Perl_is_uni_cntrl_lc(pTHX_ U32 c) |
1015 | { |
1016 | return is_uni_cntrl(c); /* XXX no locale support yet */ |
1017 | } |
1018 | |
1019 | bool |
1020 | Perl_is_uni_graph_lc(pTHX_ U32 c) |
1021 | { |
1022 | return is_uni_graph(c); /* XXX no locale support yet */ |
1023 | } |
1024 | |
1025 | bool |
864dbfa3 |
1026 | Perl_is_uni_print_lc(pTHX_ U32 c) |
a0ed51b3 |
1027 | { |
1028 | return is_uni_print(c); /* XXX no locale support yet */ |
1029 | } |
1030 | |
b8c5462f |
1031 | bool |
1032 | Perl_is_uni_punct_lc(pTHX_ U32 c) |
1033 | { |
1034 | return is_uni_punct(c); /* XXX no locale support yet */ |
1035 | } |
1036 | |
4d61ec05 |
1037 | bool |
1038 | Perl_is_uni_xdigit_lc(pTHX_ U32 c) |
1039 | { |
1040 | return is_uni_xdigit(c); /* XXX no locale support yet */ |
1041 | } |
1042 | |
a0ed51b3 |
1043 | U32 |
864dbfa3 |
1044 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
a0ed51b3 |
1045 | { |
1046 | return to_uni_upper(c); /* XXX no locale support yet */ |
1047 | } |
1048 | |
1049 | U32 |
864dbfa3 |
1050 | Perl_to_uni_title_lc(pTHX_ U32 c) |
a0ed51b3 |
1051 | { |
1052 | return to_uni_title(c); /* XXX no locale support yet */ |
1053 | } |
1054 | |
1055 | U32 |
864dbfa3 |
1056 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
a0ed51b3 |
1057 | { |
1058 | return to_uni_lower(c); /* XXX no locale support yet */ |
1059 | } |
1060 | |
a0ed51b3 |
1061 | bool |
864dbfa3 |
1062 | Perl_is_utf8_alnum(pTHX_ U8 *p) |
a0ed51b3 |
1063 | { |
386d01d6 |
1064 | if (!is_utf8_char(p)) |
1065 | return FALSE; |
a0ed51b3 |
1066 | if (!PL_utf8_alnum) |
289d4f09 |
1067 | /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true |
1068 | * descendant of isalnum(3), in other words, it doesn't |
1069 | * contain the '_'. --jhi */ |
1070 | PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0); |
a0ed51b3 |
1071 | return swash_fetch(PL_utf8_alnum, p); |
1072 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ |
1073 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1074 | if (!PL_utf8_alnum) |
1075 | PL_utf8_alnum = swash_init("utf8", "", |
1076 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
1077 | return swash_fetch(PL_utf8_alnum, p); |
1078 | #endif |
1079 | } |
1080 | |
1081 | bool |
b8c5462f |
1082 | Perl_is_utf8_alnumc(pTHX_ U8 *p) |
1083 | { |
386d01d6 |
1084 | if (!is_utf8_char(p)) |
1085 | return FALSE; |
b8c5462f |
1086 | if (!PL_utf8_alnum) |
1087 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); |
1088 | return swash_fetch(PL_utf8_alnum, p); |
1089 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ |
1090 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1091 | if (!PL_utf8_alnum) |
1092 | PL_utf8_alnum = swash_init("utf8", "", |
1093 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
1094 | return swash_fetch(PL_utf8_alnum, p); |
1095 | #endif |
1096 | } |
1097 | |
1098 | bool |
864dbfa3 |
1099 | Perl_is_utf8_idfirst(pTHX_ U8 *p) |
a0ed51b3 |
1100 | { |
1101 | return *p == '_' || is_utf8_alpha(p); |
1102 | } |
1103 | |
1104 | bool |
864dbfa3 |
1105 | Perl_is_utf8_alpha(pTHX_ U8 *p) |
a0ed51b3 |
1106 | { |
386d01d6 |
1107 | if (!is_utf8_char(p)) |
1108 | return FALSE; |
a0ed51b3 |
1109 | if (!PL_utf8_alpha) |
e24b16f9 |
1110 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
a0ed51b3 |
1111 | return swash_fetch(PL_utf8_alpha, p); |
1112 | } |
1113 | |
1114 | bool |
b8c5462f |
1115 | Perl_is_utf8_ascii(pTHX_ U8 *p) |
1116 | { |
386d01d6 |
1117 | if (!is_utf8_char(p)) |
1118 | return FALSE; |
b8c5462f |
1119 | if (!PL_utf8_ascii) |
1120 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); |
1121 | return swash_fetch(PL_utf8_ascii, p); |
1122 | } |
1123 | |
1124 | bool |
864dbfa3 |
1125 | Perl_is_utf8_space(pTHX_ U8 *p) |
a0ed51b3 |
1126 | { |
386d01d6 |
1127 | if (!is_utf8_char(p)) |
1128 | return FALSE; |
a0ed51b3 |
1129 | if (!PL_utf8_space) |
3bec3564 |
1130 | PL_utf8_space = swash_init("utf8", "IsSpacePerl", &PL_sv_undef, 0, 0); |
a0ed51b3 |
1131 | return swash_fetch(PL_utf8_space, p); |
1132 | } |
1133 | |
1134 | bool |
864dbfa3 |
1135 | Perl_is_utf8_digit(pTHX_ U8 *p) |
a0ed51b3 |
1136 | { |
386d01d6 |
1137 | if (!is_utf8_char(p)) |
1138 | return FALSE; |
a0ed51b3 |
1139 | if (!PL_utf8_digit) |
e24b16f9 |
1140 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
a0ed51b3 |
1141 | return swash_fetch(PL_utf8_digit, p); |
1142 | } |
1143 | |
1144 | bool |
864dbfa3 |
1145 | Perl_is_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 |
1146 | { |
386d01d6 |
1147 | if (!is_utf8_char(p)) |
1148 | return FALSE; |
a0ed51b3 |
1149 | if (!PL_utf8_upper) |
e24b16f9 |
1150 | PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0); |
a0ed51b3 |
1151 | return swash_fetch(PL_utf8_upper, p); |
1152 | } |
1153 | |
1154 | bool |
864dbfa3 |
1155 | Perl_is_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 |
1156 | { |
386d01d6 |
1157 | if (!is_utf8_char(p)) |
1158 | return FALSE; |
a0ed51b3 |
1159 | if (!PL_utf8_lower) |
e24b16f9 |
1160 | PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0); |
a0ed51b3 |
1161 | return swash_fetch(PL_utf8_lower, p); |
1162 | } |
1163 | |
1164 | bool |
b8c5462f |
1165 | Perl_is_utf8_cntrl(pTHX_ U8 *p) |
1166 | { |
386d01d6 |
1167 | if (!is_utf8_char(p)) |
1168 | return FALSE; |
b8c5462f |
1169 | if (!PL_utf8_cntrl) |
1170 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); |
1171 | return swash_fetch(PL_utf8_cntrl, p); |
1172 | } |
1173 | |
1174 | bool |
1175 | Perl_is_utf8_graph(pTHX_ U8 *p) |
1176 | { |
386d01d6 |
1177 | if (!is_utf8_char(p)) |
1178 | return FALSE; |
b8c5462f |
1179 | if (!PL_utf8_graph) |
1180 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); |
1181 | return swash_fetch(PL_utf8_graph, p); |
1182 | } |
1183 | |
1184 | bool |
864dbfa3 |
1185 | Perl_is_utf8_print(pTHX_ U8 *p) |
a0ed51b3 |
1186 | { |
386d01d6 |
1187 | if (!is_utf8_char(p)) |
1188 | return FALSE; |
a0ed51b3 |
1189 | if (!PL_utf8_print) |
e24b16f9 |
1190 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
a0ed51b3 |
1191 | return swash_fetch(PL_utf8_print, p); |
1192 | } |
1193 | |
1194 | bool |
b8c5462f |
1195 | Perl_is_utf8_punct(pTHX_ U8 *p) |
1196 | { |
386d01d6 |
1197 | if (!is_utf8_char(p)) |
1198 | return FALSE; |
b8c5462f |
1199 | if (!PL_utf8_punct) |
1200 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); |
1201 | return swash_fetch(PL_utf8_punct, p); |
1202 | } |
1203 | |
1204 | bool |
1205 | Perl_is_utf8_xdigit(pTHX_ U8 *p) |
1206 | { |
386d01d6 |
1207 | if (!is_utf8_char(p)) |
1208 | return FALSE; |
b8c5462f |
1209 | if (!PL_utf8_xdigit) |
1210 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); |
1211 | return swash_fetch(PL_utf8_xdigit, p); |
1212 | } |
1213 | |
1214 | bool |
864dbfa3 |
1215 | Perl_is_utf8_mark(pTHX_ U8 *p) |
a0ed51b3 |
1216 | { |
386d01d6 |
1217 | if (!is_utf8_char(p)) |
1218 | return FALSE; |
a0ed51b3 |
1219 | if (!PL_utf8_mark) |
e24b16f9 |
1220 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
a0ed51b3 |
1221 | return swash_fetch(PL_utf8_mark, p); |
1222 | } |
1223 | |
2104c8d9 |
1224 | UV |
864dbfa3 |
1225 | Perl_to_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 |
1226 | { |
1227 | UV uv; |
1228 | |
1229 | if (!PL_utf8_toupper) |
e24b16f9 |
1230 | PL_utf8_toupper = swash_init("utf8", "ToUpper", &PL_sv_undef, 4, 0); |
a0ed51b3 |
1231 | uv = swash_fetch(PL_utf8_toupper, p); |
9041c2e3 |
1232 | return uv ? UNI_TO_NATIVE(uv) : utf8_to_uvchr(p,0); |
a0ed51b3 |
1233 | } |
1234 | |
2104c8d9 |
1235 | UV |
864dbfa3 |
1236 | Perl_to_utf8_title(pTHX_ U8 *p) |
a0ed51b3 |
1237 | { |
1238 | UV uv; |
1239 | |
1240 | if (!PL_utf8_totitle) |
e24b16f9 |
1241 | PL_utf8_totitle = swash_init("utf8", "ToTitle", &PL_sv_undef, 4, 0); |
a0ed51b3 |
1242 | uv = swash_fetch(PL_utf8_totitle, p); |
9041c2e3 |
1243 | return uv ? UNI_TO_NATIVE(uv) : utf8_to_uvchr(p,0); |
a0ed51b3 |
1244 | } |
1245 | |
2104c8d9 |
1246 | UV |
864dbfa3 |
1247 | Perl_to_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 |
1248 | { |
1249 | UV uv; |
1250 | |
1251 | if (!PL_utf8_tolower) |
e24b16f9 |
1252 | PL_utf8_tolower = swash_init("utf8", "ToLower", &PL_sv_undef, 4, 0); |
a0ed51b3 |
1253 | uv = swash_fetch(PL_utf8_tolower, p); |
9041c2e3 |
1254 | return uv ? UNI_TO_NATIVE(uv) : utf8_to_uvchr(p,0); |
a0ed51b3 |
1255 | } |
1256 | |
1257 | /* a "swash" is a swatch hash */ |
1258 | |
1259 | SV* |
864dbfa3 |
1260 | Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 |
1261 | { |
1262 | SV* retval; |
bf1fed83 |
1263 | SV* tokenbufsv = sv_2mortal(NEWSV(0,0)); |
8e84507e |
1264 | dSP; |
ce3b816e |
1265 | |
1266 | if (!gv_stashpv(pkg, 0)) { /* demand load utf8 */ |
1267 | ENTER; |
1268 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv); |
1269 | LEAVE; |
1270 | } |
1271 | SPAGAIN; |
a0ed51b3 |
1272 | PUSHSTACKi(PERLSI_MAGIC); |
1273 | PUSHMARK(SP); |
1274 | EXTEND(SP,5); |
1275 | PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg)))); |
1276 | PUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
1277 | PUSHs(listsv); |
1278 | PUSHs(sv_2mortal(newSViv(minbits))); |
1279 | PUSHs(sv_2mortal(newSViv(none))); |
1280 | PUTBACK; |
1281 | ENTER; |
1282 | SAVEI32(PL_hints); |
1283 | PL_hints = 0; |
1284 | save_re_context(); |
bf1fed83 |
1285 | if (PL_curcop == &PL_compiling) |
1286 | /* XXX ought to be handled by lex_start */ |
1287 | sv_setpv(tokenbufsv, PL_tokenbuf); |
864dbfa3 |
1288 | if (call_method("SWASHNEW", G_SCALAR)) |
8e84507e |
1289 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1290 | else |
e24b16f9 |
1291 | retval = &PL_sv_undef; |
a0ed51b3 |
1292 | LEAVE; |
1293 | POPSTACK; |
e24b16f9 |
1294 | if (PL_curcop == &PL_compiling) { |
bf1fed83 |
1295 | STRLEN len; |
1296 | char* pv = SvPV(tokenbufsv, len); |
1297 | |
1298 | Copy(pv, PL_tokenbuf, len+1, char); |
e24b16f9 |
1299 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1300 | } |
1301 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) |
cea2e8a9 |
1302 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
a0ed51b3 |
1303 | return retval; |
1304 | } |
1305 | |
1306 | UV |
864dbfa3 |
1307 | Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr) |
a0ed51b3 |
1308 | { |
1309 | HV* hv = (HV*)SvRV(sv); |
1310 | U32 klen = UTF8SKIP(ptr) - 1; |
1311 | U32 off = ptr[klen] & 127; /* NB: 64 bit always 0 when len > 1 */ |
1312 | STRLEN slen; |
1313 | STRLEN needents = (klen ? 64 : 128); |
dfe13c55 |
1314 | U8 *tmps; |
a0ed51b3 |
1315 | U32 bit; |
1316 | SV *retval; |
1317 | |
1318 | /* |
1319 | * This single-entry cache saves about 1/3 of the utf8 overhead in test |
1320 | * suite. (That is, only 7-8% overall over just a hash cache. Still, |
1321 | * it's nothing to sniff at.) Pity we usually come through at least |
1322 | * two function calls to get here... |
1323 | * |
1324 | * NB: this code assumes that swatches are never modified, once generated! |
1325 | */ |
1326 | |
1327 | if (hv == PL_last_swash_hv && |
1328 | klen == PL_last_swash_klen && |
12ae5dfc |
1329 | (!klen || memEQ((char *)ptr,(char *)PL_last_swash_key,klen)) ) |
a0ed51b3 |
1330 | { |
1331 | tmps = PL_last_swash_tmps; |
1332 | slen = PL_last_swash_slen; |
1333 | } |
1334 | else { |
1335 | /* Try our second-level swatch cache, kept in a hash. */ |
dfe13c55 |
1336 | SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE); |
a0ed51b3 |
1337 | |
1338 | /* If not cached, generate it via utf8::SWASHGET */ |
dfe13c55 |
1339 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
a0ed51b3 |
1340 | dSP; |
1341 | ENTER; |
1342 | SAVETMPS; |
1343 | save_re_context(); |
1344 | PUSHSTACKi(PERLSI_MAGIC); |
1345 | PUSHMARK(SP); |
1346 | EXTEND(SP,3); |
1347 | PUSHs((SV*)sv); |
9041c2e3 |
1348 | /* We call utf8_to_uni as we want and index into Unicode tables, |
1349 | not a native character number. |
1350 | */ |
1351 | PUSHs(sv_2mortal(newSViv(utf8_to_uvuni(ptr, 0) & ~(needents - 1)))); |
a0ed51b3 |
1352 | PUSHs(sv_2mortal(newSViv(needents))); |
1353 | PUTBACK; |
864dbfa3 |
1354 | if (call_method("SWASHGET", G_SCALAR)) |
8e84507e |
1355 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1356 | else |
e24b16f9 |
1357 | retval = &PL_sv_undef; |
a0ed51b3 |
1358 | POPSTACK; |
1359 | FREETMPS; |
1360 | LEAVE; |
e24b16f9 |
1361 | if (PL_curcop == &PL_compiling) |
1362 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1363 | |
dfe13c55 |
1364 | svp = hv_store(hv, (char*)ptr, klen, retval, 0); |
a0ed51b3 |
1365 | |
dfe13c55 |
1366 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || slen < 8) |
cea2e8a9 |
1367 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 |
1368 | } |
1369 | |
1370 | PL_last_swash_hv = hv; |
1371 | PL_last_swash_klen = klen; |
1372 | PL_last_swash_tmps = tmps; |
1373 | PL_last_swash_slen = slen; |
1374 | if (klen) |
1375 | Copy(ptr, PL_last_swash_key, klen, U8); |
1376 | } |
1377 | |
9faf8d75 |
1378 | switch ((int)((slen << 3) / needents)) { |
a0ed51b3 |
1379 | case 1: |
1380 | bit = 1 << (off & 7); |
1381 | off >>= 3; |
1382 | return (tmps[off] & bit) != 0; |
1383 | case 8: |
1384 | return tmps[off]; |
1385 | case 16: |
1386 | off <<= 1; |
1387 | return (tmps[off] << 8) + tmps[off + 1] ; |
1388 | case 32: |
1389 | off <<= 2; |
1390 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; |
1391 | } |
cea2e8a9 |
1392 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 |
1393 | return 0; |
1394 | } |