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 | /* |
37607a96 |
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 | { |
3d401ffb |
49 | if (UNICODE_IS_SURROGATE(uv)) |
50 | Perl_croak(aTHX_ "UTF-16 surrogate 0x%04"UVxf, uv); |
51 | else if ((uv >= 0xFDD0 && uv <= 0xFDEF) || |
52 | (uv == 0xFFFE || uv == 0xFFFF)) |
53 | Perl_croak(aTHX_ "Unicode character 0x%04"UVxf" is illegal", uv); |
c4d5f83a |
54 | if (UNI_IS_INVARIANT(uv)) { |
55 | *d++ = UTF_TO_NATIVE(uv); |
a0ed51b3 |
56 | return d; |
57 | } |
2d331972 |
58 | #if defined(EBCDIC) |
1d72bdf6 |
59 | else { |
60 | STRLEN len = UNISKIP(uv); |
61 | U8 *p = d+len-1; |
62 | while (p > d) { |
63 | *p-- = UTF_TO_NATIVE((uv & UTF_CONTINUATION_MASK) | UTF_CONTINUATION_MARK); |
64 | uv >>= UTF_ACCUMULATION_SHIFT; |
65 | } |
66 | *p = UTF_TO_NATIVE((uv & UTF_START_MASK(len)) | UTF_START_MARK(len)); |
67 | return d+len; |
68 | } |
69 | #else /* Non loop style */ |
a0ed51b3 |
70 | if (uv < 0x800) { |
71 | *d++ = (( uv >> 6) | 0xc0); |
72 | *d++ = (( uv & 0x3f) | 0x80); |
73 | return d; |
74 | } |
75 | if (uv < 0x10000) { |
76 | *d++ = (( uv >> 12) | 0xe0); |
77 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
78 | *d++ = (( uv & 0x3f) | 0x80); |
79 | return d; |
80 | } |
81 | if (uv < 0x200000) { |
82 | *d++ = (( uv >> 18) | 0xf0); |
83 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
84 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
85 | *d++ = (( uv & 0x3f) | 0x80); |
86 | return d; |
87 | } |
88 | if (uv < 0x4000000) { |
89 | *d++ = (( uv >> 24) | 0xf8); |
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 | if (uv < 0x80000000) { |
97 | *d++ = (( uv >> 30) | 0xfc); |
98 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
99 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
100 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
101 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
102 | *d++ = (( uv & 0x3f) | 0x80); |
103 | return d; |
104 | } |
6b8eaf93 |
105 | #ifdef HAS_QUAD |
d7578b48 |
106 | if (uv < UTF8_QUAD_MAX) |
a0ed51b3 |
107 | #endif |
108 | { |
109 | *d++ = 0xfe; /* Can't match U+FEFF! */ |
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 | } |
6b8eaf93 |
118 | #ifdef HAS_QUAD |
a0ed51b3 |
119 | { |
120 | *d++ = 0xff; /* Can't match U+FFFE! */ |
3c77ea2b |
121 | *d++ = 0x80; /* 6 Reserved bits */ |
122 | *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */ |
123 | *d++ = (((uv >> 54) & 0x3f) | 0x80); |
124 | *d++ = (((uv >> 48) & 0x3f) | 0x80); |
125 | *d++ = (((uv >> 42) & 0x3f) | 0x80); |
a0ed51b3 |
126 | *d++ = (((uv >> 36) & 0x3f) | 0x80); |
127 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
128 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
129 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
130 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
131 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
132 | *d++ = (( uv & 0x3f) | 0x80); |
133 | return d; |
134 | } |
135 | #endif |
1d72bdf6 |
136 | #endif /* Loop style */ |
a0ed51b3 |
137 | } |
138 | |
9041c2e3 |
139 | |
140 | |
141 | /* |
eebe1485 |
142 | =for apidoc A|STRLEN|is_utf8_char|U8 *s |
143 | |
5da9da9e |
144 | Tests if some arbitrary number of bytes begins in a valid UTF-8 |
1d72bdf6 |
145 | character. Note that an INVARIANT (i.e. ASCII) character is a valid UTF-8 character. |
5da9da9e |
146 | The actual number of bytes in the UTF-8 character will be returned if |
147 | it is valid, otherwise 0. |
9041c2e3 |
148 | |
37607a96 |
149 | =cut |
150 | */ |
067a85ef |
151 | STRLEN |
386d01d6 |
152 | Perl_is_utf8_char(pTHX_ U8 *s) |
153 | { |
154 | U8 u = *s; |
067a85ef |
155 | STRLEN slen, len; |
156 | UV uv, ouv; |
386d01d6 |
157 | |
1d72bdf6 |
158 | if (UTF8_IS_INVARIANT(u)) |
386d01d6 |
159 | return 1; |
160 | |
60006e79 |
161 | if (!UTF8_IS_START(u)) |
386d01d6 |
162 | return 0; |
163 | |
9f07fdcd |
164 | len = UTF8SKIP(s); |
386d01d6 |
165 | |
60006e79 |
166 | if (len < 2 || !UTF8_IS_CONTINUATION(s[1])) |
067a85ef |
167 | return 0; |
168 | |
386d01d6 |
169 | slen = len - 1; |
170 | s++; |
6eb6869e |
171 | u &= UTF_START_MASK(len); |
1d72bdf6 |
172 | uv = u; |
067a85ef |
173 | ouv = uv; |
386d01d6 |
174 | while (slen--) { |
60006e79 |
175 | if (!UTF8_IS_CONTINUATION(*s)) |
386d01d6 |
176 | return 0; |
8850bf83 |
177 | uv = UTF8_ACCUMULATE(uv, *s); |
209a9bc1 |
178 | if (uv < ouv) |
067a85ef |
179 | return 0; |
180 | ouv = uv; |
386d01d6 |
181 | s++; |
182 | } |
067a85ef |
183 | |
5bbb0b5a |
184 | if (UNISKIP(uv) < len) |
067a85ef |
185 | return 0; |
186 | |
386d01d6 |
187 | return len; |
188 | } |
189 | |
6662521e |
190 | /* |
eebe1485 |
191 | =for apidoc A|bool|is_utf8_string|U8 *s|STRLEN len |
6662521e |
192 | |
5da9da9e |
193 | Returns true if first C<len> bytes of the given string form a valid UTF8 |
194 | string, false otherwise. Note that 'a valid UTF8 string' does not mean |
195 | 'a string that contains UTF8' because a valid ASCII string is a valid |
196 | UTF8 string. |
6662521e |
197 | |
198 | =cut |
199 | */ |
200 | |
8e84507e |
201 | bool |
6662521e |
202 | Perl_is_utf8_string(pTHX_ U8 *s, STRLEN len) |
203 | { |
067a85ef |
204 | U8* x = s; |
1aa99e6b |
205 | U8* send; |
067a85ef |
206 | STRLEN c; |
207 | |
1aa99e6b |
208 | if (!len) |
6cd5fe39 |
209 | len = strlen((char *)s); |
1aa99e6b |
210 | send = s + len; |
211 | |
6662521e |
212 | while (x < send) { |
213 | c = is_utf8_char(x); |
067a85ef |
214 | if (!c) |
215 | return FALSE; |
6662521e |
216 | x += c; |
6662521e |
217 | } |
60006e79 |
218 | if (x != send) |
219 | return FALSE; |
067a85ef |
220 | |
221 | return TRUE; |
6662521e |
222 | } |
223 | |
67e989fb |
224 | /* |
9041c2e3 |
225 | =for apidoc A|UV|utf8n_to_uvuni|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
67e989fb |
226 | |
9041c2e3 |
227 | Bottom level UTF-8 decode routine. |
228 | Returns the unicode code point value of the first character in the string C<s> |
ba210ebe |
229 | which is assumed to be in UTF8 encoding and no longer than C<curlen>; |
7df053ec |
230 | C<retlen> will be set to the length, in bytes, of that character. |
67e989fb |
231 | |
232 | If C<s> does not point to a well-formed UTF8 character, the behaviour |
dcad2880 |
233 | is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY, |
234 | it is assumed that the caller will raise a warning, and this function |
28d3d195 |
235 | will silently just set C<retlen> to C<-1> and return zero. If the |
236 | C<flags> does not contain UTF8_CHECK_ONLY, warnings about |
237 | malformations will be given, C<retlen> will be set to the expected |
238 | length of the UTF-8 character in bytes, and zero will be returned. |
239 | |
240 | The C<flags> can also contain various flags to allow deviations from |
241 | the strict UTF-8 encoding (see F<utf8.h>). |
67e989fb |
242 | |
9041c2e3 |
243 | Most code should use utf8_to_uvchr() rather than call this directly. |
244 | |
37607a96 |
245 | =cut |
246 | */ |
67e989fb |
247 | |
a0ed51b3 |
248 | UV |
37607a96 |
249 | Perl_utf8n_to_uvuni(pTHX_ U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
a0ed51b3 |
250 | { |
9c5ffd7c |
251 | UV uv = *s, ouv = 0; |
ba210ebe |
252 | STRLEN len = 1; |
253 | bool dowarn = ckWARN_d(WARN_UTF8); |
254 | STRLEN expectlen = 0; |
a0dbb045 |
255 | U32 warning = 0; |
256 | |
257 | /* This list is a superset of the UTF8_ALLOW_XXX. */ |
258 | |
259 | #define UTF8_WARN_EMPTY 1 |
260 | #define UTF8_WARN_CONTINUATION 2 |
261 | #define UTF8_WARN_NON_CONTINUATION 3 |
262 | #define UTF8_WARN_FE_FF 4 |
263 | #define UTF8_WARN_SHORT 5 |
264 | #define UTF8_WARN_OVERFLOW 6 |
265 | #define UTF8_WARN_SURROGATE 7 |
266 | #define UTF8_WARN_BOM 8 |
267 | #define UTF8_WARN_LONG 9 |
268 | #define UTF8_WARN_FFFF 10 |
269 | |
270 | if (curlen == 0 && |
271 | !(flags & UTF8_ALLOW_EMPTY)) { |
272 | warning = UTF8_WARN_EMPTY; |
0c443dc2 |
273 | goto malformed; |
274 | } |
275 | |
1d72bdf6 |
276 | if (UTF8_IS_INVARIANT(uv)) { |
a0ed51b3 |
277 | if (retlen) |
278 | *retlen = 1; |
c4d5f83a |
279 | return (UV) (NATIVE_TO_UTF(*s)); |
a0ed51b3 |
280 | } |
67e989fb |
281 | |
421a8bf2 |
282 | if (UTF8_IS_CONTINUATION(uv) && |
fcc8fcf6 |
283 | !(flags & UTF8_ALLOW_CONTINUATION)) { |
a0dbb045 |
284 | warning = UTF8_WARN_CONTINUATION; |
ba210ebe |
285 | goto malformed; |
286 | } |
287 | |
421a8bf2 |
288 | if (UTF8_IS_START(uv) && curlen > 1 && !UTF8_IS_CONTINUATION(s[1]) && |
fcc8fcf6 |
289 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
290 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
291 | goto malformed; |
292 | } |
9041c2e3 |
293 | |
1d72bdf6 |
294 | #ifdef EBCDIC |
75383841 |
295 | uv = NATIVE_TO_UTF(uv); |
1d72bdf6 |
296 | #else |
fcc8fcf6 |
297 | if ((uv == 0xfe || uv == 0xff) && |
298 | !(flags & UTF8_ALLOW_FE_FF)) { |
a0dbb045 |
299 | warning = UTF8_WARN_FE_FF; |
ba210ebe |
300 | goto malformed; |
a0ed51b3 |
301 | } |
1d72bdf6 |
302 | #endif |
303 | |
ba210ebe |
304 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
305 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } |
306 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } |
307 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } |
1d72bdf6 |
308 | #ifdef EBCDIC |
309 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
310 | else { len = 7; uv &= 0x01; } |
311 | #else |
ba210ebe |
312 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
313 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
1d72bdf6 |
314 | else { len = 13; uv = 0; } /* whoa! */ |
315 | #endif |
316 | |
a0ed51b3 |
317 | if (retlen) |
318 | *retlen = len; |
9041c2e3 |
319 | |
ba210ebe |
320 | expectlen = len; |
321 | |
fcc8fcf6 |
322 | if ((curlen < expectlen) && |
323 | !(flags & UTF8_ALLOW_SHORT)) { |
a0dbb045 |
324 | warning = UTF8_WARN_SHORT; |
ba210ebe |
325 | goto malformed; |
326 | } |
327 | |
328 | len--; |
a0ed51b3 |
329 | s++; |
ba210ebe |
330 | ouv = uv; |
331 | |
a0ed51b3 |
332 | while (len--) { |
421a8bf2 |
333 | if (!UTF8_IS_CONTINUATION(*s) && |
334 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
335 | s--; |
336 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
337 | goto malformed; |
a0ed51b3 |
338 | } |
339 | else |
8850bf83 |
340 | uv = UTF8_ACCUMULATE(uv, *s); |
a0dbb045 |
341 | if (!(uv > ouv)) { |
342 | /* These cannot be allowed. */ |
343 | if (uv == ouv) { |
344 | if (!(flags & UTF8_ALLOW_LONG)) { |
345 | warning = UTF8_WARN_LONG; |
346 | goto malformed; |
347 | } |
348 | } |
349 | else { /* uv < ouv */ |
350 | /* This cannot be allowed. */ |
351 | warning = UTF8_WARN_OVERFLOW; |
352 | goto malformed; |
353 | } |
ba210ebe |
354 | } |
355 | s++; |
356 | ouv = uv; |
357 | } |
358 | |
421a8bf2 |
359 | if (UNICODE_IS_SURROGATE(uv) && |
fcc8fcf6 |
360 | !(flags & UTF8_ALLOW_SURROGATE)) { |
a0dbb045 |
361 | warning = UTF8_WARN_SURROGATE; |
ba210ebe |
362 | goto malformed; |
421a8bf2 |
363 | } else if (UNICODE_IS_BYTE_ORDER_MARK(uv) && |
fcc8fcf6 |
364 | !(flags & UTF8_ALLOW_BOM)) { |
a0dbb045 |
365 | warning = UTF8_WARN_BOM; |
ba210ebe |
366 | goto malformed; |
fcc8fcf6 |
367 | } else if ((expectlen > UNISKIP(uv)) && |
368 | !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 |
369 | warning = UTF8_WARN_LONG; |
ba210ebe |
370 | goto malformed; |
421a8bf2 |
371 | } else if (UNICODE_IS_ILLEGAL(uv) && |
a9917092 |
372 | !(flags & UTF8_ALLOW_FFFF)) { |
a0dbb045 |
373 | warning = UTF8_WARN_FFFF; |
a9917092 |
374 | goto malformed; |
a0ed51b3 |
375 | } |
ba210ebe |
376 | |
a0ed51b3 |
377 | return uv; |
ba210ebe |
378 | |
379 | malformed: |
380 | |
fcc8fcf6 |
381 | if (flags & UTF8_CHECK_ONLY) { |
ba210ebe |
382 | if (retlen) |
cc366d4b |
383 | *retlen = -1; |
ba210ebe |
384 | return 0; |
385 | } |
386 | |
a0dbb045 |
387 | if (dowarn) { |
388 | SV* sv = sv_2mortal(newSVpv("Malformed UTF-8 character ", 0)); |
389 | |
390 | switch (warning) { |
391 | case 0: /* Intentionally empty. */ break; |
392 | case UTF8_WARN_EMPTY: |
393 | Perl_sv_catpvf(aTHX_ sv, "(empty string)"); |
394 | break; |
395 | case UTF8_WARN_CONTINUATION: |
396 | Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf")", uv); |
397 | break; |
398 | case UTF8_WARN_NON_CONTINUATION: |
399 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf" after start byte 0x%02"UVxf")", |
400 | (UV)s[1], uv); |
401 | break; |
402 | case UTF8_WARN_FE_FF: |
403 | Perl_sv_catpvf(aTHX_ sv, "(byte 0x%02"UVxf")", uv); |
404 | break; |
405 | case UTF8_WARN_SHORT: |
406 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d)", |
407 | curlen, curlen == 1 ? "" : "s", expectlen); |
b31f83c2 |
408 | expectlen = curlen; /* distance for caller to skip */ |
a0dbb045 |
409 | break; |
410 | case UTF8_WARN_OVERFLOW: |
411 | Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x)", |
412 | ouv, *s); |
413 | break; |
414 | case UTF8_WARN_SURROGATE: |
415 | Perl_sv_catpvf(aTHX_ sv, "(UTF-16 surrogate 0x%04"UVxf")", uv); |
416 | break; |
417 | case UTF8_WARN_BOM: |
418 | Perl_sv_catpvf(aTHX_ sv, "(byte order mark 0x%04"UVxf")", uv); |
419 | break; |
420 | case UTF8_WARN_LONG: |
421 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d)", |
422 | expectlen, expectlen == 1 ? "": "s", UNISKIP(uv)); |
423 | break; |
424 | case UTF8_WARN_FFFF: |
425 | Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv); |
426 | break; |
427 | default: |
428 | Perl_sv_catpvf(aTHX_ sv, "(unknown reason)"); |
429 | break; |
430 | } |
431 | |
432 | if (warning) { |
433 | char *s = SvPVX(sv); |
434 | |
435 | if (PL_op) |
436 | Perl_warner(aTHX_ WARN_UTF8, |
53e06cf0 |
437 | "%s in %s", s, OP_DESC(PL_op)); |
a0dbb045 |
438 | else |
439 | Perl_warner(aTHX_ WARN_UTF8, "%s", s); |
440 | } |
441 | } |
442 | |
ba210ebe |
443 | if (retlen) |
28d3d195 |
444 | *retlen = expectlen ? expectlen : len; |
ba210ebe |
445 | |
28d3d195 |
446 | return 0; |
a0ed51b3 |
447 | } |
448 | |
8e84507e |
449 | /* |
37607a96 |
450 | =for apidoc A|UV|utf8_to_uvchr|U8 *s|STRLEN *retlen |
9041c2e3 |
451 | |
452 | Returns the native character value of the first character in the string C<s> |
453 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
454 | length, in bytes, of that character. |
455 | |
456 | If C<s> does not point to a well-formed UTF8 character, zero is |
457 | returned and retlen is set, if possible, to -1. |
458 | |
459 | =cut |
460 | */ |
461 | |
462 | UV |
37607a96 |
463 | Perl_utf8_to_uvchr(pTHX_ U8 *s, STRLEN *retlen) |
9041c2e3 |
464 | { |
465 | return Perl_utf8n_to_uvchr(aTHX_ s, UTF8_MAXLEN, retlen, 0); |
466 | } |
467 | |
468 | /* |
37607a96 |
469 | =for apidoc A|UV|utf8_to_uvuni|U8 *s|STRLEN *retlen |
9041c2e3 |
470 | |
471 | Returns the Unicode code point of the first character in the string C<s> |
472 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
473 | length, in bytes, of that character. |
474 | |
475 | This function should only be used when returned UV is considered |
476 | an index into the Unicode semantic tables (e.g. swashes). |
477 | |
ba210ebe |
478 | If C<s> does not point to a well-formed UTF8 character, zero is |
479 | returned and retlen is set, if possible, to -1. |
8e84507e |
480 | |
481 | =cut |
482 | */ |
483 | |
484 | UV |
37607a96 |
485 | Perl_utf8_to_uvuni(pTHX_ U8 *s, STRLEN *retlen) |
8e84507e |
486 | { |
9041c2e3 |
487 | /* Call the low level routine asking for checks */ |
488 | return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXLEN, retlen, 0); |
8e84507e |
489 | } |
490 | |
b76347f2 |
491 | /* |
37607a96 |
492 | =for apidoc A|STRLEN|utf8_length|U8 *s|U8 *e |
b76347f2 |
493 | |
494 | Return the length of the UTF-8 char encoded string C<s> in characters. |
02eb7b47 |
495 | Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end |
496 | up past C<e>, croaks. |
b76347f2 |
497 | |
498 | =cut |
499 | */ |
500 | |
501 | STRLEN |
37607a96 |
502 | Perl_utf8_length(pTHX_ U8 *s, U8 *e) |
b76347f2 |
503 | { |
504 | STRLEN len = 0; |
505 | |
8850bf83 |
506 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
507 | * the bitops (especially ~) can create illegal UTF-8. |
508 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
509 | |
b76347f2 |
510 | if (e < s) |
02eb7b47 |
511 | Perl_croak(aTHX_ "panic: utf8_length: unexpected end"); |
b76347f2 |
512 | while (s < e) { |
02eb7b47 |
513 | U8 t = UTF8SKIP(s); |
b76347f2 |
514 | |
515 | if (e - s < t) |
0064a8a9 |
516 | Perl_croak(aTHX_ "panic: utf8_length: unaligned end"); |
b76347f2 |
517 | s += t; |
518 | len++; |
519 | } |
520 | |
521 | return len; |
522 | } |
523 | |
b06226ff |
524 | /* |
eebe1485 |
525 | =for apidoc A|IV|utf8_distance|U8 *a|U8 *b |
b06226ff |
526 | |
527 | Returns the number of UTF8 characters between the UTF-8 pointers C<a> |
528 | and C<b>. |
529 | |
530 | WARNING: use only if you *know* that the pointers point inside the |
531 | same UTF-8 buffer. |
532 | |
37607a96 |
533 | =cut |
534 | */ |
a0ed51b3 |
535 | |
02eb7b47 |
536 | IV |
864dbfa3 |
537 | Perl_utf8_distance(pTHX_ U8 *a, U8 *b) |
a0ed51b3 |
538 | { |
02eb7b47 |
539 | IV off = 0; |
540 | |
8850bf83 |
541 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
542 | * the bitops (especially ~) can create illegal UTF-8. |
543 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
544 | |
a0ed51b3 |
545 | if (a < b) { |
546 | while (a < b) { |
02eb7b47 |
547 | U8 c = UTF8SKIP(a); |
548 | |
549 | if (b - a < c) |
550 | Perl_croak(aTHX_ "panic: utf8_distance: unaligned end"); |
551 | a += c; |
a0ed51b3 |
552 | off--; |
553 | } |
554 | } |
555 | else { |
556 | while (b < a) { |
02eb7b47 |
557 | U8 c = UTF8SKIP(b); |
558 | |
559 | if (a - b < c) |
560 | Perl_croak(aTHX_ "panic: utf8_distance: unaligned end"); |
561 | b += c; |
a0ed51b3 |
562 | off++; |
563 | } |
564 | } |
02eb7b47 |
565 | |
a0ed51b3 |
566 | return off; |
567 | } |
568 | |
b06226ff |
569 | /* |
37607a96 |
570 | =for apidoc A|U8 *|utf8_hop|U8 *s|I32 off |
b06226ff |
571 | |
8850bf83 |
572 | Return the UTF-8 pointer C<s> displaced by C<off> characters, either |
573 | forward or backward. |
b06226ff |
574 | |
575 | WARNING: do not use the following unless you *know* C<off> is within |
8850bf83 |
576 | the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned |
577 | on the first byte of character or just after the last byte of a character. |
b06226ff |
578 | |
37607a96 |
579 | =cut |
580 | */ |
a0ed51b3 |
581 | |
582 | U8 * |
864dbfa3 |
583 | Perl_utf8_hop(pTHX_ U8 *s, I32 off) |
a0ed51b3 |
584 | { |
8850bf83 |
585 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g |
586 | * the bitops (especially ~) can create illegal UTF-8. |
587 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
588 | |
a0ed51b3 |
589 | if (off >= 0) { |
590 | while (off--) |
591 | s += UTF8SKIP(s); |
592 | } |
593 | else { |
594 | while (off++) { |
595 | s--; |
8850bf83 |
596 | while (UTF8_IS_CONTINUATION(*s)) |
597 | s--; |
a0ed51b3 |
598 | } |
599 | } |
600 | return s; |
601 | } |
602 | |
6940069f |
603 | /* |
eebe1485 |
604 | =for apidoc A|U8 *|utf8_to_bytes|U8 *s|STRLEN *len |
6940069f |
605 | |
246fae53 |
606 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
607 | Unlike C<bytes_to_utf8>, this over-writes the original string, and |
608 | updates len to contain the new length. |
67e989fb |
609 | Returns zero on failure, setting C<len> to -1. |
6940069f |
610 | |
611 | =cut |
612 | */ |
613 | |
614 | U8 * |
37607a96 |
615 | Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len) |
6940069f |
616 | { |
6940069f |
617 | U8 *send; |
618 | U8 *d; |
dcad2880 |
619 | U8 *save = s; |
246fae53 |
620 | |
621 | /* ensure valid UTF8 and chars < 256 before updating string */ |
dcad2880 |
622 | for (send = s + *len; s < send; ) { |
623 | U8 c = *s++; |
624 | |
1d72bdf6 |
625 | if (!UTF8_IS_INVARIANT(c) && |
626 | (!UTF8_IS_DOWNGRADEABLE_START(c) || (s >= send) |
627 | || !(c = *s++) || !UTF8_IS_CONTINUATION(c))) { |
dcad2880 |
628 | *len = -1; |
629 | return 0; |
630 | } |
246fae53 |
631 | } |
dcad2880 |
632 | |
633 | d = s = save; |
6940069f |
634 | while (s < send) { |
ed646e6e |
635 | STRLEN ulen; |
9041c2e3 |
636 | *d++ = (U8)utf8_to_uvchr(s, &ulen); |
ed646e6e |
637 | s += ulen; |
6940069f |
638 | } |
639 | *d = '\0'; |
246fae53 |
640 | *len = d - save; |
6940069f |
641 | return save; |
642 | } |
643 | |
644 | /* |
f9a63242 |
645 | =for apidoc A|U8 *|bytes_from_utf8|U8 *s|STRLEN *len|bool *is_utf8 |
646 | |
647 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
648 | Unlike <utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to |
ef9edfd0 |
649 | the newly-created string, and updates C<len> to contain the new |
650 | length. Returns the original string if no conversion occurs, C<len> |
651 | is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to |
652 | 0 if C<s> is converted or contains all 7bit characters. |
f9a63242 |
653 | |
37607a96 |
654 | =cut |
655 | */ |
f9a63242 |
656 | |
657 | U8 * |
37607a96 |
658 | Perl_bytes_from_utf8(pTHX_ U8 *s, STRLEN *len, bool *is_utf8) |
f9a63242 |
659 | { |
f9a63242 |
660 | U8 *d; |
661 | U8 *start = s; |
db42d148 |
662 | U8 *send; |
f9a63242 |
663 | I32 count = 0; |
664 | |
665 | if (!*is_utf8) |
666 | return start; |
667 | |
ef9edfd0 |
668 | /* ensure valid UTF8 and chars < 256 before converting string */ |
f9a63242 |
669 | for (send = s + *len; s < send;) { |
670 | U8 c = *s++; |
1d72bdf6 |
671 | if (!UTF8_IS_INVARIANT(c)) { |
db42d148 |
672 | if (UTF8_IS_DOWNGRADEABLE_START(c) && s < send && |
673 | (c = *s++) && UTF8_IS_CONTINUATION(c)) |
674 | count++; |
675 | else |
f9a63242 |
676 | return start; |
db42d148 |
677 | } |
f9a63242 |
678 | } |
679 | |
680 | *is_utf8 = 0; |
681 | |
f9a63242 |
682 | Newz(801, d, (*len) - count + 1, U8); |
ef9edfd0 |
683 | s = start; start = d; |
f9a63242 |
684 | while (s < send) { |
685 | U8 c = *s++; |
c4d5f83a |
686 | if (!UTF8_IS_INVARIANT(c)) { |
687 | /* Then it is two-byte encoded */ |
688 | c = UTF8_ACCUMULATE(NATIVE_TO_UTF(c), *s++); |
689 | c = ASCII_TO_NATIVE(c); |
690 | } |
691 | *d++ = c; |
f9a63242 |
692 | } |
693 | *d = '\0'; |
694 | *len = d - start; |
695 | return start; |
696 | } |
697 | |
698 | /* |
eebe1485 |
699 | =for apidoc A|U8 *|bytes_to_utf8|U8 *s|STRLEN *len |
6940069f |
700 | |
701 | Converts a string C<s> of length C<len> from ASCII into UTF8 encoding. |
6662521e |
702 | Returns a pointer to the newly-created string, and sets C<len> to |
703 | reflect the new length. |
6940069f |
704 | |
497711e7 |
705 | =cut |
6940069f |
706 | */ |
707 | |
708 | U8* |
37607a96 |
709 | Perl_bytes_to_utf8(pTHX_ U8 *s, STRLEN *len) |
6940069f |
710 | { |
6940069f |
711 | U8 *send; |
712 | U8 *d; |
713 | U8 *dst; |
6662521e |
714 | send = s + (*len); |
6940069f |
715 | |
6662521e |
716 | Newz(801, d, (*len) * 2 + 1, U8); |
6940069f |
717 | dst = d; |
718 | |
719 | while (s < send) { |
db42d148 |
720 | UV uv = NATIVE_TO_ASCII(*s++); |
c4d5f83a |
721 | if (UNI_IS_INVARIANT(uv)) |
722 | *d++ = UTF_TO_NATIVE(uv); |
6940069f |
723 | else { |
90f44359 |
724 | *d++ = UTF8_EIGHT_BIT_HI(uv); |
725 | *d++ = UTF8_EIGHT_BIT_LO(uv); |
6940069f |
726 | } |
727 | } |
728 | *d = '\0'; |
6662521e |
729 | *len = d-dst; |
6940069f |
730 | return dst; |
731 | } |
732 | |
a0ed51b3 |
733 | /* |
dea0fc0b |
734 | * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8. |
a0ed51b3 |
735 | * |
736 | * Destination must be pre-extended to 3/2 source. Do not use in-place. |
737 | * We optimize for native, for obvious reasons. */ |
738 | |
739 | U8* |
dea0fc0b |
740 | Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
741 | { |
dea0fc0b |
742 | U8* pend; |
743 | U8* dstart = d; |
744 | |
745 | if (bytelen & 1) |
a7867d0a |
746 | Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen"); |
dea0fc0b |
747 | |
748 | pend = p + bytelen; |
749 | |
a0ed51b3 |
750 | while (p < pend) { |
dea0fc0b |
751 | UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */ |
752 | p += 2; |
a0ed51b3 |
753 | if (uv < 0x80) { |
754 | *d++ = uv; |
755 | continue; |
756 | } |
757 | if (uv < 0x800) { |
758 | *d++ = (( uv >> 6) | 0xc0); |
759 | *d++ = (( uv & 0x3f) | 0x80); |
760 | continue; |
761 | } |
762 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ |
dea0fc0b |
763 | UV low = *p++; |
764 | if (low < 0xdc00 || low >= 0xdfff) |
765 | Perl_croak(aTHX_ "Malformed UTF-16 surrogate"); |
a0ed51b3 |
766 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
767 | } |
768 | if (uv < 0x10000) { |
769 | *d++ = (( uv >> 12) | 0xe0); |
770 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
771 | *d++ = (( uv & 0x3f) | 0x80); |
772 | continue; |
773 | } |
774 | else { |
775 | *d++ = (( uv >> 18) | 0xf0); |
776 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
777 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
778 | *d++ = (( uv & 0x3f) | 0x80); |
779 | continue; |
780 | } |
781 | } |
dea0fc0b |
782 | *newlen = d - dstart; |
a0ed51b3 |
783 | return d; |
784 | } |
785 | |
786 | /* Note: this one is slightly destructive of the source. */ |
787 | |
788 | U8* |
dea0fc0b |
789 | Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
790 | { |
791 | U8* s = (U8*)p; |
792 | U8* send = s + bytelen; |
793 | while (s < send) { |
794 | U8 tmp = s[0]; |
795 | s[0] = s[1]; |
796 | s[1] = tmp; |
797 | s += 2; |
798 | } |
dea0fc0b |
799 | return utf16_to_utf8(p, d, bytelen, newlen); |
a0ed51b3 |
800 | } |
801 | |
802 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ |
803 | |
804 | bool |
84afefe6 |
805 | Perl_is_uni_alnum(pTHX_ UV c) |
a0ed51b3 |
806 | { |
ad391ad9 |
807 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
808 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
809 | return is_utf8_alnum(tmpbuf); |
810 | } |
811 | |
812 | bool |
84afefe6 |
813 | Perl_is_uni_alnumc(pTHX_ UV c) |
b8c5462f |
814 | { |
ad391ad9 |
815 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
816 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
817 | return is_utf8_alnumc(tmpbuf); |
818 | } |
819 | |
820 | bool |
84afefe6 |
821 | Perl_is_uni_idfirst(pTHX_ UV c) |
a0ed51b3 |
822 | { |
ad391ad9 |
823 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
824 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
825 | return is_utf8_idfirst(tmpbuf); |
826 | } |
827 | |
828 | bool |
84afefe6 |
829 | Perl_is_uni_alpha(pTHX_ UV c) |
a0ed51b3 |
830 | { |
ad391ad9 |
831 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
832 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
833 | return is_utf8_alpha(tmpbuf); |
834 | } |
835 | |
836 | bool |
84afefe6 |
837 | Perl_is_uni_ascii(pTHX_ UV c) |
4d61ec05 |
838 | { |
ad391ad9 |
839 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
840 | uvchr_to_utf8(tmpbuf, (UV)c); |
4d61ec05 |
841 | return is_utf8_ascii(tmpbuf); |
842 | } |
843 | |
844 | bool |
84afefe6 |
845 | Perl_is_uni_space(pTHX_ UV c) |
a0ed51b3 |
846 | { |
ad391ad9 |
847 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
848 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
849 | return is_utf8_space(tmpbuf); |
850 | } |
851 | |
852 | bool |
84afefe6 |
853 | Perl_is_uni_digit(pTHX_ UV c) |
a0ed51b3 |
854 | { |
ad391ad9 |
855 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
856 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
857 | return is_utf8_digit(tmpbuf); |
858 | } |
859 | |
860 | bool |
84afefe6 |
861 | Perl_is_uni_upper(pTHX_ UV c) |
a0ed51b3 |
862 | { |
ad391ad9 |
863 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
864 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
865 | return is_utf8_upper(tmpbuf); |
866 | } |
867 | |
868 | bool |
84afefe6 |
869 | Perl_is_uni_lower(pTHX_ UV c) |
a0ed51b3 |
870 | { |
ad391ad9 |
871 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
872 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
873 | return is_utf8_lower(tmpbuf); |
874 | } |
875 | |
876 | bool |
84afefe6 |
877 | Perl_is_uni_cntrl(pTHX_ UV c) |
b8c5462f |
878 | { |
ad391ad9 |
879 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
880 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
881 | return is_utf8_cntrl(tmpbuf); |
882 | } |
883 | |
884 | bool |
84afefe6 |
885 | Perl_is_uni_graph(pTHX_ UV c) |
b8c5462f |
886 | { |
ad391ad9 |
887 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
888 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
889 | return is_utf8_graph(tmpbuf); |
890 | } |
891 | |
892 | bool |
84afefe6 |
893 | Perl_is_uni_print(pTHX_ UV c) |
a0ed51b3 |
894 | { |
ad391ad9 |
895 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
896 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
897 | return is_utf8_print(tmpbuf); |
898 | } |
899 | |
b8c5462f |
900 | bool |
84afefe6 |
901 | Perl_is_uni_punct(pTHX_ UV c) |
b8c5462f |
902 | { |
ad391ad9 |
903 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
904 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
905 | return is_utf8_punct(tmpbuf); |
906 | } |
907 | |
4d61ec05 |
908 | bool |
84afefe6 |
909 | Perl_is_uni_xdigit(pTHX_ UV c) |
4d61ec05 |
910 | { |
e7ae6809 |
911 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
912 | uvchr_to_utf8(tmpbuf, (UV)c); |
4d61ec05 |
913 | return is_utf8_xdigit(tmpbuf); |
914 | } |
915 | |
84afefe6 |
916 | UV |
917 | Perl_to_uni_upper(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
918 | { |
e7ae6809 |
919 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
920 | uvchr_to_utf8(tmpbuf, (UV)c); |
a2a2844f |
921 | return to_utf8_upper(tmpbuf, p, lenp); |
a0ed51b3 |
922 | } |
923 | |
84afefe6 |
924 | UV |
925 | Perl_to_uni_title(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
926 | { |
e7ae6809 |
927 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
928 | uvchr_to_utf8(tmpbuf, (UV)c); |
a2a2844f |
929 | return to_utf8_title(tmpbuf, p, lenp); |
a0ed51b3 |
930 | } |
931 | |
84afefe6 |
932 | UV |
933 | Perl_to_uni_lower(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
934 | { |
d90824e8 |
935 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
936 | uvchr_to_utf8(tmpbuf, (UV)c); |
a2a2844f |
937 | return to_utf8_lower(tmpbuf, p, lenp); |
a0ed51b3 |
938 | } |
939 | |
84afefe6 |
940 | UV |
941 | Perl_to_uni_fold(pTHX_ UV c, U8* p, STRLEN *lenp) |
942 | { |
d90824e8 |
943 | U8 tmpbuf[UTF8_MAXLEN_FOLD+1]; |
84afefe6 |
944 | uvchr_to_utf8(tmpbuf, (UV)c); |
945 | return to_utf8_fold(tmpbuf, p, lenp); |
946 | } |
947 | |
a0ed51b3 |
948 | /* for now these all assume no locale info available for Unicode > 255 */ |
949 | |
950 | bool |
84afefe6 |
951 | Perl_is_uni_alnum_lc(pTHX_ UV c) |
a0ed51b3 |
952 | { |
953 | return is_uni_alnum(c); /* XXX no locale support yet */ |
954 | } |
955 | |
956 | bool |
84afefe6 |
957 | Perl_is_uni_alnumc_lc(pTHX_ UV c) |
b8c5462f |
958 | { |
959 | return is_uni_alnumc(c); /* XXX no locale support yet */ |
960 | } |
961 | |
962 | bool |
84afefe6 |
963 | Perl_is_uni_idfirst_lc(pTHX_ UV c) |
a0ed51b3 |
964 | { |
965 | return is_uni_idfirst(c); /* XXX no locale support yet */ |
966 | } |
967 | |
968 | bool |
84afefe6 |
969 | Perl_is_uni_alpha_lc(pTHX_ UV c) |
a0ed51b3 |
970 | { |
971 | return is_uni_alpha(c); /* XXX no locale support yet */ |
972 | } |
973 | |
974 | bool |
84afefe6 |
975 | Perl_is_uni_ascii_lc(pTHX_ UV c) |
4d61ec05 |
976 | { |
977 | return is_uni_ascii(c); /* XXX no locale support yet */ |
978 | } |
979 | |
980 | bool |
84afefe6 |
981 | Perl_is_uni_space_lc(pTHX_ UV c) |
a0ed51b3 |
982 | { |
983 | return is_uni_space(c); /* XXX no locale support yet */ |
984 | } |
985 | |
986 | bool |
84afefe6 |
987 | Perl_is_uni_digit_lc(pTHX_ UV c) |
a0ed51b3 |
988 | { |
989 | return is_uni_digit(c); /* XXX no locale support yet */ |
990 | } |
991 | |
992 | bool |
84afefe6 |
993 | Perl_is_uni_upper_lc(pTHX_ UV c) |
a0ed51b3 |
994 | { |
995 | return is_uni_upper(c); /* XXX no locale support yet */ |
996 | } |
997 | |
998 | bool |
84afefe6 |
999 | Perl_is_uni_lower_lc(pTHX_ UV c) |
a0ed51b3 |
1000 | { |
1001 | return is_uni_lower(c); /* XXX no locale support yet */ |
1002 | } |
1003 | |
1004 | bool |
84afefe6 |
1005 | Perl_is_uni_cntrl_lc(pTHX_ UV c) |
b8c5462f |
1006 | { |
1007 | return is_uni_cntrl(c); /* XXX no locale support yet */ |
1008 | } |
1009 | |
1010 | bool |
84afefe6 |
1011 | Perl_is_uni_graph_lc(pTHX_ UV c) |
b8c5462f |
1012 | { |
1013 | return is_uni_graph(c); /* XXX no locale support yet */ |
1014 | } |
1015 | |
1016 | bool |
84afefe6 |
1017 | Perl_is_uni_print_lc(pTHX_ UV c) |
a0ed51b3 |
1018 | { |
1019 | return is_uni_print(c); /* XXX no locale support yet */ |
1020 | } |
1021 | |
b8c5462f |
1022 | bool |
84afefe6 |
1023 | Perl_is_uni_punct_lc(pTHX_ UV c) |
b8c5462f |
1024 | { |
1025 | return is_uni_punct(c); /* XXX no locale support yet */ |
1026 | } |
1027 | |
4d61ec05 |
1028 | bool |
84afefe6 |
1029 | Perl_is_uni_xdigit_lc(pTHX_ UV c) |
4d61ec05 |
1030 | { |
1031 | return is_uni_xdigit(c); /* XXX no locale support yet */ |
1032 | } |
1033 | |
a0ed51b3 |
1034 | bool |
864dbfa3 |
1035 | Perl_is_utf8_alnum(pTHX_ U8 *p) |
a0ed51b3 |
1036 | { |
386d01d6 |
1037 | if (!is_utf8_char(p)) |
1038 | return FALSE; |
a0ed51b3 |
1039 | if (!PL_utf8_alnum) |
289d4f09 |
1040 | /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true |
1041 | * descendant of isalnum(3), in other words, it doesn't |
1042 | * contain the '_'. --jhi */ |
1043 | PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0); |
3568d838 |
1044 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
a0ed51b3 |
1045 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ |
1046 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1047 | if (!PL_utf8_alnum) |
1048 | PL_utf8_alnum = swash_init("utf8", "", |
1049 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
3568d838 |
1050 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
a0ed51b3 |
1051 | #endif |
1052 | } |
1053 | |
1054 | bool |
b8c5462f |
1055 | Perl_is_utf8_alnumc(pTHX_ U8 *p) |
1056 | { |
386d01d6 |
1057 | if (!is_utf8_char(p)) |
1058 | return FALSE; |
b8c5462f |
1059 | if (!PL_utf8_alnum) |
1060 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); |
3568d838 |
1061 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
b8c5462f |
1062 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ |
1063 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1064 | if (!PL_utf8_alnum) |
1065 | PL_utf8_alnum = swash_init("utf8", "", |
1066 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
3568d838 |
1067 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
b8c5462f |
1068 | #endif |
1069 | } |
1070 | |
1071 | bool |
864dbfa3 |
1072 | Perl_is_utf8_idfirst(pTHX_ U8 *p) |
a0ed51b3 |
1073 | { |
1074 | return *p == '_' || is_utf8_alpha(p); |
1075 | } |
1076 | |
1077 | bool |
864dbfa3 |
1078 | Perl_is_utf8_alpha(pTHX_ U8 *p) |
a0ed51b3 |
1079 | { |
386d01d6 |
1080 | if (!is_utf8_char(p)) |
1081 | return FALSE; |
a0ed51b3 |
1082 | if (!PL_utf8_alpha) |
e24b16f9 |
1083 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
3568d838 |
1084 | return swash_fetch(PL_utf8_alpha, p, TRUE); |
a0ed51b3 |
1085 | } |
1086 | |
1087 | bool |
b8c5462f |
1088 | Perl_is_utf8_ascii(pTHX_ U8 *p) |
1089 | { |
386d01d6 |
1090 | if (!is_utf8_char(p)) |
1091 | return FALSE; |
b8c5462f |
1092 | if (!PL_utf8_ascii) |
1093 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); |
3568d838 |
1094 | return swash_fetch(PL_utf8_ascii, p, TRUE); |
b8c5462f |
1095 | } |
1096 | |
1097 | bool |
864dbfa3 |
1098 | Perl_is_utf8_space(pTHX_ U8 *p) |
a0ed51b3 |
1099 | { |
386d01d6 |
1100 | if (!is_utf8_char(p)) |
1101 | return FALSE; |
a0ed51b3 |
1102 | if (!PL_utf8_space) |
3bec3564 |
1103 | PL_utf8_space = swash_init("utf8", "IsSpacePerl", &PL_sv_undef, 0, 0); |
3568d838 |
1104 | return swash_fetch(PL_utf8_space, p, TRUE); |
a0ed51b3 |
1105 | } |
1106 | |
1107 | bool |
864dbfa3 |
1108 | Perl_is_utf8_digit(pTHX_ U8 *p) |
a0ed51b3 |
1109 | { |
386d01d6 |
1110 | if (!is_utf8_char(p)) |
1111 | return FALSE; |
a0ed51b3 |
1112 | if (!PL_utf8_digit) |
e24b16f9 |
1113 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
3568d838 |
1114 | return swash_fetch(PL_utf8_digit, p, TRUE); |
a0ed51b3 |
1115 | } |
1116 | |
1117 | bool |
864dbfa3 |
1118 | Perl_is_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 |
1119 | { |
386d01d6 |
1120 | if (!is_utf8_char(p)) |
1121 | return FALSE; |
a0ed51b3 |
1122 | if (!PL_utf8_upper) |
e24b16f9 |
1123 | PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0); |
3568d838 |
1124 | return swash_fetch(PL_utf8_upper, p, TRUE); |
a0ed51b3 |
1125 | } |
1126 | |
1127 | bool |
864dbfa3 |
1128 | Perl_is_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 |
1129 | { |
386d01d6 |
1130 | if (!is_utf8_char(p)) |
1131 | return FALSE; |
a0ed51b3 |
1132 | if (!PL_utf8_lower) |
e24b16f9 |
1133 | PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0); |
3568d838 |
1134 | return swash_fetch(PL_utf8_lower, p, TRUE); |
a0ed51b3 |
1135 | } |
1136 | |
1137 | bool |
b8c5462f |
1138 | Perl_is_utf8_cntrl(pTHX_ U8 *p) |
1139 | { |
386d01d6 |
1140 | if (!is_utf8_char(p)) |
1141 | return FALSE; |
b8c5462f |
1142 | if (!PL_utf8_cntrl) |
1143 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); |
3568d838 |
1144 | return swash_fetch(PL_utf8_cntrl, p, TRUE); |
b8c5462f |
1145 | } |
1146 | |
1147 | bool |
1148 | Perl_is_utf8_graph(pTHX_ U8 *p) |
1149 | { |
386d01d6 |
1150 | if (!is_utf8_char(p)) |
1151 | return FALSE; |
b8c5462f |
1152 | if (!PL_utf8_graph) |
1153 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); |
3568d838 |
1154 | return swash_fetch(PL_utf8_graph, p, TRUE); |
b8c5462f |
1155 | } |
1156 | |
1157 | bool |
864dbfa3 |
1158 | Perl_is_utf8_print(pTHX_ U8 *p) |
a0ed51b3 |
1159 | { |
386d01d6 |
1160 | if (!is_utf8_char(p)) |
1161 | return FALSE; |
a0ed51b3 |
1162 | if (!PL_utf8_print) |
e24b16f9 |
1163 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
3568d838 |
1164 | return swash_fetch(PL_utf8_print, p, TRUE); |
a0ed51b3 |
1165 | } |
1166 | |
1167 | bool |
b8c5462f |
1168 | Perl_is_utf8_punct(pTHX_ U8 *p) |
1169 | { |
386d01d6 |
1170 | if (!is_utf8_char(p)) |
1171 | return FALSE; |
b8c5462f |
1172 | if (!PL_utf8_punct) |
1173 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); |
3568d838 |
1174 | return swash_fetch(PL_utf8_punct, p, TRUE); |
b8c5462f |
1175 | } |
1176 | |
1177 | bool |
1178 | Perl_is_utf8_xdigit(pTHX_ U8 *p) |
1179 | { |
386d01d6 |
1180 | if (!is_utf8_char(p)) |
1181 | return FALSE; |
b8c5462f |
1182 | if (!PL_utf8_xdigit) |
1183 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); |
3568d838 |
1184 | return swash_fetch(PL_utf8_xdigit, p, TRUE); |
b8c5462f |
1185 | } |
1186 | |
1187 | bool |
864dbfa3 |
1188 | Perl_is_utf8_mark(pTHX_ U8 *p) |
a0ed51b3 |
1189 | { |
386d01d6 |
1190 | if (!is_utf8_char(p)) |
1191 | return FALSE; |
a0ed51b3 |
1192 | if (!PL_utf8_mark) |
e24b16f9 |
1193 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
3568d838 |
1194 | return swash_fetch(PL_utf8_mark, p, TRUE); |
a0ed51b3 |
1195 | } |
1196 | |
6b5c0936 |
1197 | /* |
1198 | =for apidoc A|UV|to_utf8_case|U8 *p|U8* ustrp|STRLEN *lenp|SV **swash|char *normal|char *special |
1199 | |
1200 | The "p" contains the pointer to the UTF-8 string encoding |
1201 | the character that is being converted. |
1202 | |
1203 | The "ustrp" is a pointer to the character buffer to put the |
1204 | conversion result to. The "lenp" is a pointer to the length |
1205 | of the result. |
1206 | |
1207 | The "swash" is a pointer to the swash to use. |
1208 | |
1209 | The "normal" is a string like "ToLower" which means the swash |
1210 | $utf8::ToLower, which is stored in lib/unicore/To/Lower.pl, |
1211 | and loaded by SWASHGET, using lib/utf8_heavy.pl. |
1212 | |
1213 | The "special" is a string like "utf8::ToSpecLower", which means |
d1be9408 |
1214 | the hash %utf8::ToSpecLower, which is stored in the same file, |
6b5c0936 |
1215 | lib/unicore/To/Lower.pl, and also loaded by SWASHGET. The access |
1216 | to the hash is by Perl_to_utf8_case(). |
1217 | |
1218 | =cut |
1219 | */ |
1220 | |
2104c8d9 |
1221 | UV |
983ffd37 |
1222 | Perl_to_utf8_case(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp, SV **swashp,char *normal, char *special) |
a0ed51b3 |
1223 | { |
1224 | UV uv; |
1225 | |
983ffd37 |
1226 | if (!*swashp) |
1227 | *swashp = swash_init("utf8", normal, &PL_sv_undef, 4, 0); |
1228 | uv = swash_fetch(*swashp, p, TRUE); |
1229 | if (uv) |
1230 | uv = UNI_TO_NATIVE(uv); |
1231 | else { |
1232 | HV *hv; |
1233 | SV *keysv; |
1234 | HE *he; |
1235 | |
1236 | uv = utf8_to_uvchr(p, 0); |
1237 | |
1238 | if ((hv = get_hv(special, FALSE)) && |
6d47b937 |
1239 | (keysv = sv_2mortal(Perl_newSVpvf(aTHX_ "%04"UVXf, uv))) && |
983ffd37 |
1240 | (he = hv_fetch_ent(hv, keysv, FALSE, 0))) { |
1241 | SV *val = HeVAL(he); |
1242 | char *s = SvPV(val, *lenp); |
1243 | U8 c = *(U8*)s; |
1244 | if (*lenp > 1 || UNI_IS_INVARIANT(c)) |
1245 | Copy(s, ustrp, *lenp, U8); |
1246 | else { |
1247 | /* something in the 0x80..0xFF range */ |
1248 | ustrp[0] = UTF8_EIGHT_BIT_HI(c); |
1249 | ustrp[1] = UTF8_EIGHT_BIT_LO(c); |
1250 | *lenp = 2; |
1251 | } |
1252 | return 0; |
1253 | } |
1254 | } |
a58d912c |
1255 | if (lenp) |
d90824e8 |
1256 | *lenp = UNISKIP(uv); |
a2a2844f |
1257 | uvuni_to_utf8(ustrp, uv); |
1258 | return uv; |
a0ed51b3 |
1259 | } |
1260 | |
2104c8d9 |
1261 | UV |
983ffd37 |
1262 | Perl_to_utf8_upper(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1263 | { |
983ffd37 |
1264 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1265 | &PL_utf8_toupper, "ToUpper", "utf8::ToSpecUpper"); |
983ffd37 |
1266 | } |
a0ed51b3 |
1267 | |
983ffd37 |
1268 | UV |
1269 | Perl_to_utf8_title(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
1270 | { |
1271 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1272 | &PL_utf8_totitle, "ToTitle", "utf8::ToSpecTitle"); |
a0ed51b3 |
1273 | } |
1274 | |
2104c8d9 |
1275 | UV |
a2a2844f |
1276 | Perl_to_utf8_lower(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1277 | { |
983ffd37 |
1278 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1279 | &PL_utf8_tolower, "ToLower", "utf8::ToSpecLower"); |
1280 | } |
1281 | |
1282 | UV |
1283 | Perl_to_utf8_fold(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
1284 | { |
1285 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
1286 | &PL_utf8_tofold, "ToFold", "utf8::ToSpecFold"); |
a0ed51b3 |
1287 | } |
1288 | |
1289 | /* a "swash" is a swatch hash */ |
1290 | |
1291 | SV* |
864dbfa3 |
1292 | Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 |
1293 | { |
1294 | SV* retval; |
bf1fed83 |
1295 | SV* tokenbufsv = sv_2mortal(NEWSV(0,0)); |
8e84507e |
1296 | dSP; |
1b026014 |
1297 | HV *stash = gv_stashpvn(pkg, strlen(pkg), FALSE); |
f8be5cf0 |
1298 | SV* errsv_save; |
ce3b816e |
1299 | |
1b026014 |
1300 | if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */ |
ce3b816e |
1301 | ENTER; |
f8be5cf0 |
1302 | errsv_save = newSVsv(ERRSV); |
ce3b816e |
1303 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv); |
f8be5cf0 |
1304 | if (!SvTRUE(ERRSV)) |
1305 | sv_setsv(ERRSV, errsv_save); |
1306 | SvREFCNT_dec(errsv_save); |
ce3b816e |
1307 | LEAVE; |
1308 | } |
1309 | SPAGAIN; |
a0ed51b3 |
1310 | PUSHSTACKi(PERLSI_MAGIC); |
1311 | PUSHMARK(SP); |
1312 | EXTEND(SP,5); |
1313 | PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg)))); |
1314 | PUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
1315 | PUSHs(listsv); |
1316 | PUSHs(sv_2mortal(newSViv(minbits))); |
1317 | PUSHs(sv_2mortal(newSViv(none))); |
1318 | PUTBACK; |
1319 | ENTER; |
1320 | SAVEI32(PL_hints); |
1321 | PL_hints = 0; |
1322 | save_re_context(); |
bf1fed83 |
1323 | if (PL_curcop == &PL_compiling) |
1324 | /* XXX ought to be handled by lex_start */ |
1325 | sv_setpv(tokenbufsv, PL_tokenbuf); |
f8be5cf0 |
1326 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1327 | if (call_method("SWASHNEW", G_SCALAR)) |
8e84507e |
1328 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1329 | else |
e24b16f9 |
1330 | retval = &PL_sv_undef; |
f8be5cf0 |
1331 | if (!SvTRUE(ERRSV)) |
1332 | sv_setsv(ERRSV, errsv_save); |
1333 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1334 | LEAVE; |
1335 | POPSTACK; |
e24b16f9 |
1336 | if (PL_curcop == &PL_compiling) { |
bf1fed83 |
1337 | STRLEN len; |
1338 | char* pv = SvPV(tokenbufsv, len); |
1339 | |
1340 | Copy(pv, PL_tokenbuf, len+1, char); |
e24b16f9 |
1341 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1342 | } |
1343 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) |
cea2e8a9 |
1344 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
a0ed51b3 |
1345 | return retval; |
1346 | } |
1347 | |
035d37be |
1348 | |
1349 | /* This API is wrong for special case conversions since we may need to |
1350 | * return several Unicode characters for a single Unicode character |
1351 | * (see lib/unicore/SpecCase.txt) The SWASHGET in lib/utf8_heavy.pl is |
1352 | * the lower-level routine, and it is similarly broken for returning |
1353 | * multiple values. --jhi */ |
a0ed51b3 |
1354 | UV |
3568d838 |
1355 | Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr, bool do_utf8) |
a0ed51b3 |
1356 | { |
1357 | HV* hv = (HV*)SvRV(sv); |
3568d838 |
1358 | U32 klen; |
1359 | U32 off; |
a0ed51b3 |
1360 | STRLEN slen; |
7d85a32c |
1361 | STRLEN needents; |
4ea42e7f |
1362 | U8 *tmps = NULL; |
a0ed51b3 |
1363 | U32 bit; |
1364 | SV *retval; |
3568d838 |
1365 | U8 tmputf8[2]; |
1366 | UV c = NATIVE_TO_ASCII(*ptr); |
1367 | |
1368 | if (!do_utf8 && !UNI_IS_INVARIANT(c)) { |
1369 | tmputf8[0] = UTF8_EIGHT_BIT_HI(c); |
1370 | tmputf8[1] = UTF8_EIGHT_BIT_LO(c); |
1371 | ptr = tmputf8; |
1372 | } |
1373 | /* Given a UTF-X encoded char 0xAA..0xYY,0xZZ |
1374 | * then the "swatch" is a vec() for al the chars which start |
1375 | * with 0xAA..0xYY |
1376 | * So the key in the hash (klen) is length of encoded char -1 |
1377 | */ |
1378 | klen = UTF8SKIP(ptr) - 1; |
1379 | off = ptr[klen]; |
a0ed51b3 |
1380 | |
7d85a32c |
1381 | if (klen == 0) |
1382 | { |
1383 | /* If char in invariant then swatch is for all the invariant chars |
1384 | * In both UTF-8 and UTF8-MOD that happens to be UTF_CONTINUATION_MARK |
1385 | */ |
1386 | needents = UTF_CONTINUATION_MARK; |
1387 | off = NATIVE_TO_UTF(ptr[klen]); |
1388 | } |
1389 | else |
1390 | { |
1391 | /* If char is encoded then swatch is for the prefix */ |
1392 | needents = (1 << UTF_ACCUMULATION_SHIFT); |
1393 | off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK; |
1394 | } |
1395 | |
a0ed51b3 |
1396 | /* |
1397 | * This single-entry cache saves about 1/3 of the utf8 overhead in test |
1398 | * suite. (That is, only 7-8% overall over just a hash cache. Still, |
1399 | * it's nothing to sniff at.) Pity we usually come through at least |
1400 | * two function calls to get here... |
1401 | * |
1402 | * NB: this code assumes that swatches are never modified, once generated! |
1403 | */ |
1404 | |
3568d838 |
1405 | if (hv == PL_last_swash_hv && |
a0ed51b3 |
1406 | klen == PL_last_swash_klen && |
3568d838 |
1407 | (!klen || memEQ((char *)ptr, (char *)PL_last_swash_key, klen)) ) |
a0ed51b3 |
1408 | { |
1409 | tmps = PL_last_swash_tmps; |
1410 | slen = PL_last_swash_slen; |
1411 | } |
1412 | else { |
1413 | /* Try our second-level swatch cache, kept in a hash. */ |
dfe13c55 |
1414 | SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE); |
a0ed51b3 |
1415 | |
1416 | /* If not cached, generate it via utf8::SWASHGET */ |
dfe13c55 |
1417 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
a0ed51b3 |
1418 | dSP; |
2b9d42f0 |
1419 | /* We use utf8n_to_uvuni() as we want an index into |
1420 | Unicode tables, not a native character number. |
1421 | */ |
1422 | UV code_point = utf8n_to_uvuni(ptr, UTF8_MAXLEN, NULL, 0); |
f8be5cf0 |
1423 | SV *errsv_save; |
a0ed51b3 |
1424 | ENTER; |
1425 | SAVETMPS; |
1426 | save_re_context(); |
1427 | PUSHSTACKi(PERLSI_MAGIC); |
1428 | PUSHMARK(SP); |
1429 | EXTEND(SP,3); |
1430 | PUSHs((SV*)sv); |
ffbc6a93 |
1431 | /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */ |
3568d838 |
1432 | PUSHs(sv_2mortal(newSViv((klen) ? |
1433 | (code_point & ~(needents - 1)) : 0))); |
a0ed51b3 |
1434 | PUSHs(sv_2mortal(newSViv(needents))); |
1435 | PUTBACK; |
f8be5cf0 |
1436 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1437 | if (call_method("SWASHGET", G_SCALAR)) |
8e84507e |
1438 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1439 | else |
e24b16f9 |
1440 | retval = &PL_sv_undef; |
f8be5cf0 |
1441 | if (!SvTRUE(ERRSV)) |
1442 | sv_setsv(ERRSV, errsv_save); |
1443 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1444 | POPSTACK; |
1445 | FREETMPS; |
1446 | LEAVE; |
e24b16f9 |
1447 | if (PL_curcop == &PL_compiling) |
1448 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1449 | |
dfe13c55 |
1450 | svp = hv_store(hv, (char*)ptr, klen, retval, 0); |
a0ed51b3 |
1451 | |
7d85a32c |
1452 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || (slen << 3) < needents) |
cea2e8a9 |
1453 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 |
1454 | } |
1455 | |
1456 | PL_last_swash_hv = hv; |
1457 | PL_last_swash_klen = klen; |
1458 | PL_last_swash_tmps = tmps; |
1459 | PL_last_swash_slen = slen; |
1460 | if (klen) |
1461 | Copy(ptr, PL_last_swash_key, klen, U8); |
1462 | } |
1463 | |
9faf8d75 |
1464 | switch ((int)((slen << 3) / needents)) { |
a0ed51b3 |
1465 | case 1: |
1466 | bit = 1 << (off & 7); |
1467 | off >>= 3; |
1468 | return (tmps[off] & bit) != 0; |
1469 | case 8: |
1470 | return tmps[off]; |
1471 | case 16: |
1472 | off <<= 1; |
1473 | return (tmps[off] << 8) + tmps[off + 1] ; |
1474 | case 32: |
1475 | off <<= 2; |
1476 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; |
1477 | } |
cea2e8a9 |
1478 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 |
1479 | return 0; |
1480 | } |
2b9d42f0 |
1481 | |
1482 | |
1483 | /* |
37607a96 |
1484 | =for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv |
2b9d42f0 |
1485 | |
1486 | Adds the UTF8 representation of the Native codepoint C<uv> to the end |
1487 | of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free |
1488 | bytes available. The return value is the pointer to the byte after the |
1489 | end of the new character. In other words, |
1490 | |
1491 | d = uvchr_to_utf8(d, uv); |
1492 | |
1493 | is the recommended wide native character-aware way of saying |
1494 | |
1495 | *(d++) = uv; |
1496 | |
1497 | =cut |
1498 | */ |
1499 | |
1500 | /* On ASCII machines this is normally a macro but we want a |
1501 | real function in case XS code wants it |
1502 | */ |
1503 | #undef Perl_uvchr_to_utf8 |
1504 | U8 * |
1505 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) |
1506 | { |
1507 | return Perl_uvuni_to_utf8(aTHX_ d, NATIVE_TO_UNI(uv)); |
1508 | } |
1509 | |
1510 | |
1511 | /* |
37607a96 |
1512 | =for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
2b9d42f0 |
1513 | |
1514 | Returns the native character value of the first character in the string C<s> |
1515 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
1516 | length, in bytes, of that character. |
1517 | |
1518 | Allows length and flags to be passed to low level routine. |
1519 | |
1520 | =cut |
1521 | */ |
1522 | /* On ASCII machines this is normally a macro but we want a |
1523 | real function in case XS code wants it |
1524 | */ |
1525 | #undef Perl_utf8n_to_uvchr |
1526 | UV |
37607a96 |
1527 | Perl_utf8n_to_uvchr(pTHX_ U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
2b9d42f0 |
1528 | { |
1529 | UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); |
1530 | return UNI_TO_NATIVE(uv); |
1531 | } |
1532 | |
d2cc3551 |
1533 | /* |
1534 | =for apidoc A|char *|pv_uni_display|SV *dsv|U8 *spv|STRLEN len|STRLEN pvlim|UV flags |
1535 | |
1536 | Build to the scalar dsv a displayable version of the string spv, |
1537 | length len, the displayable version being at most pvlim bytes long |
1538 | (if longer, the rest is truncated and "..." will be appended). |
1539 | The flags argument is currently unused but available for future extensions. |
1540 | The pointer to the PV of the dsv is returned. |
1541 | |
1542 | =cut */ |
e6b2e755 |
1543 | char * |
1544 | Perl_pv_uni_display(pTHX_ SV *dsv, U8 *spv, STRLEN len, STRLEN pvlim, UV flags) |
1545 | { |
1546 | int truncated = 0; |
1547 | char *s, *e; |
1548 | |
1549 | sv_setpvn(dsv, "", 0); |
1550 | for (s = (char *)spv, e = s + len; s < e; s += UTF8SKIP(s)) { |
1551 | UV u; |
1552 | if (pvlim && SvCUR(dsv) >= pvlim) { |
1553 | truncated++; |
1554 | break; |
1555 | } |
1556 | u = utf8_to_uvchr((U8*)s, 0); |
1557 | Perl_sv_catpvf(aTHX_ dsv, "\\x{%"UVxf"}", u); |
1558 | } |
1559 | if (truncated) |
1560 | sv_catpvn(dsv, "...", 3); |
1561 | |
1562 | return SvPVX(dsv); |
1563 | } |
2b9d42f0 |
1564 | |
d2cc3551 |
1565 | /* |
1566 | =for apidoc A|char *|sv_uni_display|SV *dsv|SV *ssv|STRLEN pvlim|UV flags |
1567 | |
1568 | Build to the scalar dsv a displayable version of the scalar sv, |
1569 | he displayable version being at most pvlim bytes long |
1570 | (if longer, the rest is truncated and "..." will be appended). |
1571 | The flags argument is currently unused but available for future extensions. |
1572 | The pointer to the PV of the dsv is returned. |
1573 | |
1574 | =cut */ |
e6b2e755 |
1575 | char * |
1576 | Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags) |
1577 | { |
701a277b |
1578 | return Perl_pv_uni_display(aTHX_ dsv, (U8*)SvPVX(ssv), SvCUR(ssv), |
1579 | pvlim, flags); |
1580 | } |
1581 | |
d2cc3551 |
1582 | /* |
1583 | =for apidoc A|I32|ibcmp_utf8|const char *s1|bool u1|const char *s2|bool u2|register I32 len |
1584 | |
1585 | Return true if the strings s1 and s2 differ case-insensitively, false |
1586 | if not (if they are equal case-insensitively). If u1 is true, the |
1587 | string s1 is assumed to be in UTF-8-encoded Unicode. If u2 is true, |
332ddc25 |
1588 | the string s2 is assumed to be in UTF-8-encoded Unicode. |
d2cc3551 |
1589 | |
1590 | For case-insensitiveness, the "casefolding" of Unicode is used |
1591 | instead of upper/lowercasing both the characters, see |
1592 | http://www.unicode.org/unicode/reports/tr21/ (Case Mappings). |
1593 | |
1594 | =cut */ |
701a277b |
1595 | I32 |
332ddc25 |
1596 | Perl_ibcmp_utf8(pTHX_ const char *s1, bool u1, register I32 len1, const char *s2, bool u2, register I32 len2) |
1597 | { |
1598 | register U8 *a = (U8*)s1; |
1599 | register U8 *b = (U8*)s2; |
1600 | register U8 *ae = b + len1; |
1601 | register U8 *be = b + len2; |
1602 | STRLEN la, lb; |
1603 | UV ca, cb; |
1604 | STRLEN ulen1, ulen2; |
e7ae6809 |
1605 | U8 tmpbuf1[UTF8_MAXLEN_FOLD+1]; |
1606 | U8 tmpbuf2[UTF8_MAXLEN_FOLD+1]; |
332ddc25 |
1607 | |
1608 | while (a < ae && b < be) { |
1609 | if (u1) { |
1610 | if (a + UTF8SKIP(a) > ae) |
1611 | break; |
1612 | ca = utf8_to_uvchr((U8*)a, &la); |
1613 | } else { |
1614 | ca = *a; |
1615 | la = 1; |
1616 | } |
1617 | if (u2) { |
1618 | if (b + UTF8SKIP(b) > be) |
1619 | break; |
1620 | cb = utf8_to_uvchr((U8*)b, &lb); |
1621 | } else { |
1622 | cb = *b; |
1623 | lb = 1; |
1624 | } |
1625 | if (ca != cb) { |
701a277b |
1626 | if (u1) |
332ddc25 |
1627 | to_uni_fold(NATIVE_TO_UNI(ca), tmpbuf1, &ulen1); |
1628 | else |
1629 | ulen1 = 1; |
701a277b |
1630 | if (u2) |
332ddc25 |
1631 | to_uni_fold(NATIVE_TO_UNI(cb), tmpbuf2, &ulen2); |
1632 | else |
1633 | ulen2 = 1; |
1634 | if (ulen1 != ulen2 |
1635 | || (ulen1 == 1 && PL_fold[ca] != PL_fold[cb]) |
1636 | || memNE((char *)tmpbuf1, (char *)tmpbuf2, ulen1)) |
1637 | return 1; /* mismatch */ |
701a277b |
1638 | } |
332ddc25 |
1639 | a += la; |
1640 | b += lb; |
d2cc3551 |
1641 | } |
332ddc25 |
1642 | return a == ae && b == be ? 0 : 1; /* 0 match, 1 mismatch */ |
e6b2e755 |
1643 | } |
701a277b |
1644 | |