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 | { |
507b9800 |
49 | if (ckWARN_d(WARN_UTF8)) { |
50 | if (UNICODE_IS_SURROGATE(uv)) |
51 | Perl_warner(aTHX_ WARN_UTF8, "UTF-16 surrogate 0x%04"UVxf, uv); |
52 | else if ((uv >= 0xFDD0 && uv <= 0xFDEF) || |
53 | (uv == 0xFFFE || uv == 0xFFFF)) |
54 | Perl_warner(aTHX_ WARN_UTF8, |
55 | "Unicode character 0x%04"UVxf" is illegal", uv); |
56 | } |
c4d5f83a |
57 | if (UNI_IS_INVARIANT(uv)) { |
58 | *d++ = UTF_TO_NATIVE(uv); |
a0ed51b3 |
59 | return d; |
60 | } |
2d331972 |
61 | #if defined(EBCDIC) |
1d72bdf6 |
62 | else { |
63 | STRLEN len = UNISKIP(uv); |
64 | U8 *p = d+len-1; |
65 | while (p > d) { |
66 | *p-- = UTF_TO_NATIVE((uv & UTF_CONTINUATION_MASK) | UTF_CONTINUATION_MARK); |
67 | uv >>= UTF_ACCUMULATION_SHIFT; |
68 | } |
69 | *p = UTF_TO_NATIVE((uv & UTF_START_MASK(len)) | UTF_START_MARK(len)); |
70 | return d+len; |
71 | } |
72 | #else /* Non loop style */ |
a0ed51b3 |
73 | if (uv < 0x800) { |
74 | *d++ = (( uv >> 6) | 0xc0); |
75 | *d++ = (( uv & 0x3f) | 0x80); |
76 | return d; |
77 | } |
78 | if (uv < 0x10000) { |
79 | *d++ = (( uv >> 12) | 0xe0); |
80 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
81 | *d++ = (( uv & 0x3f) | 0x80); |
82 | return d; |
83 | } |
84 | if (uv < 0x200000) { |
85 | *d++ = (( uv >> 18) | 0xf0); |
86 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
87 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
88 | *d++ = (( uv & 0x3f) | 0x80); |
89 | return d; |
90 | } |
91 | if (uv < 0x4000000) { |
92 | *d++ = (( uv >> 24) | 0xf8); |
93 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
94 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
95 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
96 | *d++ = (( uv & 0x3f) | 0x80); |
97 | return d; |
98 | } |
99 | if (uv < 0x80000000) { |
100 | *d++ = (( uv >> 30) | 0xfc); |
101 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
102 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
103 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
104 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
105 | *d++ = (( uv & 0x3f) | 0x80); |
106 | return d; |
107 | } |
6b8eaf93 |
108 | #ifdef HAS_QUAD |
d7578b48 |
109 | if (uv < UTF8_QUAD_MAX) |
a0ed51b3 |
110 | #endif |
111 | { |
112 | *d++ = 0xfe; /* Can't match U+FEFF! */ |
113 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
114 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
115 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
116 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
117 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
118 | *d++ = (( uv & 0x3f) | 0x80); |
119 | return d; |
120 | } |
6b8eaf93 |
121 | #ifdef HAS_QUAD |
a0ed51b3 |
122 | { |
123 | *d++ = 0xff; /* Can't match U+FFFE! */ |
3c77ea2b |
124 | *d++ = 0x80; /* 6 Reserved bits */ |
125 | *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */ |
126 | *d++ = (((uv >> 54) & 0x3f) | 0x80); |
127 | *d++ = (((uv >> 48) & 0x3f) | 0x80); |
128 | *d++ = (((uv >> 42) & 0x3f) | 0x80); |
a0ed51b3 |
129 | *d++ = (((uv >> 36) & 0x3f) | 0x80); |
130 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
131 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
132 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
133 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
134 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
135 | *d++ = (( uv & 0x3f) | 0x80); |
136 | return d; |
137 | } |
138 | #endif |
1d72bdf6 |
139 | #endif /* Loop style */ |
a0ed51b3 |
140 | } |
141 | |
9041c2e3 |
142 | |
143 | |
144 | /* |
eebe1485 |
145 | =for apidoc A|STRLEN|is_utf8_char|U8 *s |
146 | |
5da9da9e |
147 | Tests if some arbitrary number of bytes begins in a valid UTF-8 |
1d72bdf6 |
148 | character. Note that an INVARIANT (i.e. ASCII) character is a valid UTF-8 character. |
5da9da9e |
149 | The actual number of bytes in the UTF-8 character will be returned if |
150 | it is valid, otherwise 0. |
9041c2e3 |
151 | |
37607a96 |
152 | =cut |
153 | */ |
067a85ef |
154 | STRLEN |
386d01d6 |
155 | Perl_is_utf8_char(pTHX_ U8 *s) |
156 | { |
157 | U8 u = *s; |
067a85ef |
158 | STRLEN slen, len; |
159 | UV uv, ouv; |
386d01d6 |
160 | |
1d72bdf6 |
161 | if (UTF8_IS_INVARIANT(u)) |
386d01d6 |
162 | return 1; |
163 | |
60006e79 |
164 | if (!UTF8_IS_START(u)) |
386d01d6 |
165 | return 0; |
166 | |
9f07fdcd |
167 | len = UTF8SKIP(s); |
386d01d6 |
168 | |
60006e79 |
169 | if (len < 2 || !UTF8_IS_CONTINUATION(s[1])) |
067a85ef |
170 | return 0; |
171 | |
386d01d6 |
172 | slen = len - 1; |
173 | s++; |
6eb6869e |
174 | u &= UTF_START_MASK(len); |
1d72bdf6 |
175 | uv = u; |
067a85ef |
176 | ouv = uv; |
386d01d6 |
177 | while (slen--) { |
60006e79 |
178 | if (!UTF8_IS_CONTINUATION(*s)) |
386d01d6 |
179 | return 0; |
8850bf83 |
180 | uv = UTF8_ACCUMULATE(uv, *s); |
209a9bc1 |
181 | if (uv < ouv) |
067a85ef |
182 | return 0; |
183 | ouv = uv; |
386d01d6 |
184 | s++; |
185 | } |
067a85ef |
186 | |
5bbb0b5a |
187 | if (UNISKIP(uv) < len) |
067a85ef |
188 | return 0; |
189 | |
386d01d6 |
190 | return len; |
191 | } |
192 | |
6662521e |
193 | /* |
eebe1485 |
194 | =for apidoc A|bool|is_utf8_string|U8 *s|STRLEN len |
6662521e |
195 | |
5da9da9e |
196 | Returns true if first C<len> bytes of the given string form a valid UTF8 |
197 | string, false otherwise. Note that 'a valid UTF8 string' does not mean |
198 | 'a string that contains UTF8' because a valid ASCII string is a valid |
199 | UTF8 string. |
6662521e |
200 | |
201 | =cut |
202 | */ |
203 | |
8e84507e |
204 | bool |
6662521e |
205 | Perl_is_utf8_string(pTHX_ U8 *s, STRLEN len) |
206 | { |
067a85ef |
207 | U8* x = s; |
1aa99e6b |
208 | U8* send; |
067a85ef |
209 | STRLEN c; |
210 | |
1aa99e6b |
211 | if (!len) |
6cd5fe39 |
212 | len = strlen((char *)s); |
1aa99e6b |
213 | send = s + len; |
214 | |
6662521e |
215 | while (x < send) { |
216 | c = is_utf8_char(x); |
067a85ef |
217 | if (!c) |
218 | return FALSE; |
6662521e |
219 | x += c; |
6662521e |
220 | } |
60006e79 |
221 | if (x != send) |
222 | return FALSE; |
067a85ef |
223 | |
224 | return TRUE; |
6662521e |
225 | } |
226 | |
67e989fb |
227 | /* |
9041c2e3 |
228 | =for apidoc A|UV|utf8n_to_uvuni|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
67e989fb |
229 | |
9041c2e3 |
230 | Bottom level UTF-8 decode routine. |
231 | Returns the unicode code point value of the first character in the string C<s> |
ba210ebe |
232 | which is assumed to be in UTF8 encoding and no longer than C<curlen>; |
7df053ec |
233 | C<retlen> will be set to the length, in bytes, of that character. |
67e989fb |
234 | |
235 | If C<s> does not point to a well-formed UTF8 character, the behaviour |
dcad2880 |
236 | is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY, |
237 | it is assumed that the caller will raise a warning, and this function |
28d3d195 |
238 | will silently just set C<retlen> to C<-1> and return zero. If the |
239 | C<flags> does not contain UTF8_CHECK_ONLY, warnings about |
240 | malformations will be given, C<retlen> will be set to the expected |
241 | length of the UTF-8 character in bytes, and zero will be returned. |
242 | |
243 | The C<flags> can also contain various flags to allow deviations from |
244 | the strict UTF-8 encoding (see F<utf8.h>). |
67e989fb |
245 | |
9041c2e3 |
246 | Most code should use utf8_to_uvchr() rather than call this directly. |
247 | |
37607a96 |
248 | =cut |
249 | */ |
67e989fb |
250 | |
a0ed51b3 |
251 | UV |
37607a96 |
252 | Perl_utf8n_to_uvuni(pTHX_ U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
a0ed51b3 |
253 | { |
097fb8e2 |
254 | U8 *s0 = s; |
9c5ffd7c |
255 | UV uv = *s, ouv = 0; |
ba210ebe |
256 | STRLEN len = 1; |
257 | bool dowarn = ckWARN_d(WARN_UTF8); |
4f849cb6 |
258 | UV startbyte = *s; |
ba210ebe |
259 | STRLEN expectlen = 0; |
a0dbb045 |
260 | U32 warning = 0; |
261 | |
262 | /* This list is a superset of the UTF8_ALLOW_XXX. */ |
263 | |
264 | #define UTF8_WARN_EMPTY 1 |
265 | #define UTF8_WARN_CONTINUATION 2 |
266 | #define UTF8_WARN_NON_CONTINUATION 3 |
267 | #define UTF8_WARN_FE_FF 4 |
268 | #define UTF8_WARN_SHORT 5 |
269 | #define UTF8_WARN_OVERFLOW 6 |
270 | #define UTF8_WARN_SURROGATE 7 |
271 | #define UTF8_WARN_BOM 8 |
272 | #define UTF8_WARN_LONG 9 |
273 | #define UTF8_WARN_FFFF 10 |
274 | |
275 | if (curlen == 0 && |
276 | !(flags & UTF8_ALLOW_EMPTY)) { |
277 | warning = UTF8_WARN_EMPTY; |
0c443dc2 |
278 | goto malformed; |
279 | } |
280 | |
1d72bdf6 |
281 | if (UTF8_IS_INVARIANT(uv)) { |
a0ed51b3 |
282 | if (retlen) |
283 | *retlen = 1; |
c4d5f83a |
284 | return (UV) (NATIVE_TO_UTF(*s)); |
a0ed51b3 |
285 | } |
67e989fb |
286 | |
421a8bf2 |
287 | if (UTF8_IS_CONTINUATION(uv) && |
fcc8fcf6 |
288 | !(flags & UTF8_ALLOW_CONTINUATION)) { |
a0dbb045 |
289 | warning = UTF8_WARN_CONTINUATION; |
ba210ebe |
290 | goto malformed; |
291 | } |
292 | |
421a8bf2 |
293 | if (UTF8_IS_START(uv) && curlen > 1 && !UTF8_IS_CONTINUATION(s[1]) && |
fcc8fcf6 |
294 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
295 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
296 | goto malformed; |
297 | } |
9041c2e3 |
298 | |
1d72bdf6 |
299 | #ifdef EBCDIC |
75383841 |
300 | uv = NATIVE_TO_UTF(uv); |
1d72bdf6 |
301 | #else |
fcc8fcf6 |
302 | if ((uv == 0xfe || uv == 0xff) && |
303 | !(flags & UTF8_ALLOW_FE_FF)) { |
a0dbb045 |
304 | warning = UTF8_WARN_FE_FF; |
ba210ebe |
305 | goto malformed; |
a0ed51b3 |
306 | } |
1d72bdf6 |
307 | #endif |
308 | |
ba210ebe |
309 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
310 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } |
311 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } |
312 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } |
1d72bdf6 |
313 | #ifdef EBCDIC |
314 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
315 | else { len = 7; uv &= 0x01; } |
316 | #else |
ba210ebe |
317 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
318 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
1d72bdf6 |
319 | else { len = 13; uv = 0; } /* whoa! */ |
320 | #endif |
321 | |
a0ed51b3 |
322 | if (retlen) |
323 | *retlen = len; |
9041c2e3 |
324 | |
ba210ebe |
325 | expectlen = len; |
326 | |
fcc8fcf6 |
327 | if ((curlen < expectlen) && |
328 | !(flags & UTF8_ALLOW_SHORT)) { |
a0dbb045 |
329 | warning = UTF8_WARN_SHORT; |
ba210ebe |
330 | goto malformed; |
331 | } |
332 | |
333 | len--; |
a0ed51b3 |
334 | s++; |
ba210ebe |
335 | ouv = uv; |
336 | |
a0ed51b3 |
337 | while (len--) { |
421a8bf2 |
338 | if (!UTF8_IS_CONTINUATION(*s) && |
339 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
340 | s--; |
341 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
342 | goto malformed; |
a0ed51b3 |
343 | } |
344 | else |
8850bf83 |
345 | uv = UTF8_ACCUMULATE(uv, *s); |
a0dbb045 |
346 | if (!(uv > ouv)) { |
347 | /* These cannot be allowed. */ |
348 | if (uv == ouv) { |
349 | if (!(flags & UTF8_ALLOW_LONG)) { |
350 | warning = UTF8_WARN_LONG; |
351 | goto malformed; |
352 | } |
353 | } |
354 | else { /* uv < ouv */ |
355 | /* This cannot be allowed. */ |
356 | warning = UTF8_WARN_OVERFLOW; |
357 | goto malformed; |
358 | } |
ba210ebe |
359 | } |
360 | s++; |
361 | ouv = uv; |
362 | } |
363 | |
421a8bf2 |
364 | if (UNICODE_IS_SURROGATE(uv) && |
fcc8fcf6 |
365 | !(flags & UTF8_ALLOW_SURROGATE)) { |
a0dbb045 |
366 | warning = UTF8_WARN_SURROGATE; |
ba210ebe |
367 | goto malformed; |
421a8bf2 |
368 | } else if (UNICODE_IS_BYTE_ORDER_MARK(uv) && |
fcc8fcf6 |
369 | !(flags & UTF8_ALLOW_BOM)) { |
a0dbb045 |
370 | warning = UTF8_WARN_BOM; |
ba210ebe |
371 | goto malformed; |
fcc8fcf6 |
372 | } else if ((expectlen > UNISKIP(uv)) && |
373 | !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 |
374 | warning = UTF8_WARN_LONG; |
ba210ebe |
375 | goto malformed; |
421a8bf2 |
376 | } else if (UNICODE_IS_ILLEGAL(uv) && |
a9917092 |
377 | !(flags & UTF8_ALLOW_FFFF)) { |
a0dbb045 |
378 | warning = UTF8_WARN_FFFF; |
a9917092 |
379 | goto malformed; |
a0ed51b3 |
380 | } |
ba210ebe |
381 | |
a0ed51b3 |
382 | return uv; |
ba210ebe |
383 | |
384 | malformed: |
385 | |
fcc8fcf6 |
386 | if (flags & UTF8_CHECK_ONLY) { |
ba210ebe |
387 | if (retlen) |
cc366d4b |
388 | *retlen = -1; |
ba210ebe |
389 | return 0; |
390 | } |
391 | |
a0dbb045 |
392 | if (dowarn) { |
393 | SV* sv = sv_2mortal(newSVpv("Malformed UTF-8 character ", 0)); |
394 | |
395 | switch (warning) { |
396 | case 0: /* Intentionally empty. */ break; |
397 | case UTF8_WARN_EMPTY: |
398 | Perl_sv_catpvf(aTHX_ sv, "(empty string)"); |
399 | break; |
400 | case UTF8_WARN_CONTINUATION: |
097fb8e2 |
401 | Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf", with no preceding start byte)", uv); |
a0dbb045 |
402 | break; |
403 | case UTF8_WARN_NON_CONTINUATION: |
097fb8e2 |
404 | if (s == s0) |
405 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", immediately after start byte 0x%02"UVxf")", |
406 | (UV)s[1], startbyte); |
407 | else |
408 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", %d byte%s after start byte 0x%02"UVxf", expected %d bytes)", |
409 | (UV)s[1], s - s0, s - s0 > 1 ? "s" : "", startbyte, expectlen); |
410 | |
a0dbb045 |
411 | break; |
412 | case UTF8_WARN_FE_FF: |
413 | Perl_sv_catpvf(aTHX_ sv, "(byte 0x%02"UVxf")", uv); |
414 | break; |
415 | case UTF8_WARN_SHORT: |
097fb8e2 |
416 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
417 | curlen, curlen == 1 ? "" : "s", expectlen, startbyte); |
b31f83c2 |
418 | expectlen = curlen; /* distance for caller to skip */ |
a0dbb045 |
419 | break; |
420 | case UTF8_WARN_OVERFLOW: |
097fb8e2 |
421 | Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x, after start byte 0x%02"UVxf")", |
422 | ouv, *s, startbyte); |
a0dbb045 |
423 | break; |
424 | case UTF8_WARN_SURROGATE: |
425 | Perl_sv_catpvf(aTHX_ sv, "(UTF-16 surrogate 0x%04"UVxf")", uv); |
426 | break; |
427 | case UTF8_WARN_BOM: |
428 | Perl_sv_catpvf(aTHX_ sv, "(byte order mark 0x%04"UVxf")", uv); |
429 | break; |
430 | case UTF8_WARN_LONG: |
097fb8e2 |
431 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
432 | expectlen, expectlen == 1 ? "": "s", UNISKIP(uv), startbyte); |
a0dbb045 |
433 | break; |
434 | case UTF8_WARN_FFFF: |
435 | Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv); |
436 | break; |
437 | default: |
438 | Perl_sv_catpvf(aTHX_ sv, "(unknown reason)"); |
439 | break; |
440 | } |
441 | |
442 | if (warning) { |
443 | char *s = SvPVX(sv); |
444 | |
445 | if (PL_op) |
446 | Perl_warner(aTHX_ WARN_UTF8, |
53e06cf0 |
447 | "%s in %s", s, OP_DESC(PL_op)); |
a0dbb045 |
448 | else |
449 | Perl_warner(aTHX_ WARN_UTF8, "%s", s); |
450 | } |
451 | } |
452 | |
ba210ebe |
453 | if (retlen) |
28d3d195 |
454 | *retlen = expectlen ? expectlen : len; |
ba210ebe |
455 | |
28d3d195 |
456 | return 0; |
a0ed51b3 |
457 | } |
458 | |
8e84507e |
459 | /* |
37607a96 |
460 | =for apidoc A|UV|utf8_to_uvchr|U8 *s|STRLEN *retlen |
9041c2e3 |
461 | |
462 | Returns the native character value of the first character in the string C<s> |
463 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
464 | length, in bytes, of that character. |
465 | |
466 | If C<s> does not point to a well-formed UTF8 character, zero is |
467 | returned and retlen is set, if possible, to -1. |
468 | |
469 | =cut |
470 | */ |
471 | |
472 | UV |
37607a96 |
473 | Perl_utf8_to_uvchr(pTHX_ U8 *s, STRLEN *retlen) |
9041c2e3 |
474 | { |
475 | return Perl_utf8n_to_uvchr(aTHX_ s, UTF8_MAXLEN, retlen, 0); |
476 | } |
477 | |
478 | /* |
37607a96 |
479 | =for apidoc A|UV|utf8_to_uvuni|U8 *s|STRLEN *retlen |
9041c2e3 |
480 | |
481 | Returns the Unicode code point of the first character in the string C<s> |
482 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
483 | length, in bytes, of that character. |
484 | |
485 | This function should only be used when returned UV is considered |
486 | an index into the Unicode semantic tables (e.g. swashes). |
487 | |
ba210ebe |
488 | If C<s> does not point to a well-formed UTF8 character, zero is |
489 | returned and retlen is set, if possible, to -1. |
8e84507e |
490 | |
491 | =cut |
492 | */ |
493 | |
494 | UV |
37607a96 |
495 | Perl_utf8_to_uvuni(pTHX_ U8 *s, STRLEN *retlen) |
8e84507e |
496 | { |
9041c2e3 |
497 | /* Call the low level routine asking for checks */ |
498 | return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXLEN, retlen, 0); |
8e84507e |
499 | } |
500 | |
b76347f2 |
501 | /* |
37607a96 |
502 | =for apidoc A|STRLEN|utf8_length|U8 *s|U8 *e |
b76347f2 |
503 | |
504 | Return the length of the UTF-8 char encoded string C<s> in characters. |
02eb7b47 |
505 | Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end |
506 | up past C<e>, croaks. |
b76347f2 |
507 | |
508 | =cut |
509 | */ |
510 | |
511 | STRLEN |
37607a96 |
512 | Perl_utf8_length(pTHX_ U8 *s, U8 *e) |
b76347f2 |
513 | { |
514 | STRLEN len = 0; |
515 | |
8850bf83 |
516 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
517 | * the bitops (especially ~) can create illegal UTF-8. |
518 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
519 | |
b76347f2 |
520 | if (e < s) |
02eb7b47 |
521 | Perl_croak(aTHX_ "panic: utf8_length: unexpected end"); |
b76347f2 |
522 | while (s < e) { |
02eb7b47 |
523 | U8 t = UTF8SKIP(s); |
b76347f2 |
524 | |
525 | if (e - s < t) |
0064a8a9 |
526 | Perl_croak(aTHX_ "panic: utf8_length: unaligned end"); |
b76347f2 |
527 | s += t; |
528 | len++; |
529 | } |
530 | |
531 | return len; |
532 | } |
533 | |
b06226ff |
534 | /* |
eebe1485 |
535 | =for apidoc A|IV|utf8_distance|U8 *a|U8 *b |
b06226ff |
536 | |
537 | Returns the number of UTF8 characters between the UTF-8 pointers C<a> |
538 | and C<b>. |
539 | |
540 | WARNING: use only if you *know* that the pointers point inside the |
541 | same UTF-8 buffer. |
542 | |
37607a96 |
543 | =cut |
544 | */ |
a0ed51b3 |
545 | |
02eb7b47 |
546 | IV |
864dbfa3 |
547 | Perl_utf8_distance(pTHX_ U8 *a, U8 *b) |
a0ed51b3 |
548 | { |
02eb7b47 |
549 | IV off = 0; |
550 | |
8850bf83 |
551 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
552 | * the bitops (especially ~) can create illegal UTF-8. |
553 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
554 | |
a0ed51b3 |
555 | if (a < b) { |
556 | while (a < b) { |
02eb7b47 |
557 | U8 c = UTF8SKIP(a); |
558 | |
559 | if (b - a < c) |
560 | Perl_croak(aTHX_ "panic: utf8_distance: unaligned end"); |
561 | a += c; |
a0ed51b3 |
562 | off--; |
563 | } |
564 | } |
565 | else { |
566 | while (b < a) { |
02eb7b47 |
567 | U8 c = UTF8SKIP(b); |
568 | |
569 | if (a - b < c) |
570 | Perl_croak(aTHX_ "panic: utf8_distance: unaligned end"); |
571 | b += c; |
a0ed51b3 |
572 | off++; |
573 | } |
574 | } |
02eb7b47 |
575 | |
a0ed51b3 |
576 | return off; |
577 | } |
578 | |
b06226ff |
579 | /* |
37607a96 |
580 | =for apidoc A|U8 *|utf8_hop|U8 *s|I32 off |
b06226ff |
581 | |
8850bf83 |
582 | Return the UTF-8 pointer C<s> displaced by C<off> characters, either |
583 | forward or backward. |
b06226ff |
584 | |
585 | WARNING: do not use the following unless you *know* C<off> is within |
8850bf83 |
586 | the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned |
587 | on the first byte of character or just after the last byte of a character. |
b06226ff |
588 | |
37607a96 |
589 | =cut |
590 | */ |
a0ed51b3 |
591 | |
592 | U8 * |
864dbfa3 |
593 | Perl_utf8_hop(pTHX_ U8 *s, I32 off) |
a0ed51b3 |
594 | { |
8850bf83 |
595 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g |
596 | * the bitops (especially ~) can create illegal UTF-8. |
597 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
598 | |
a0ed51b3 |
599 | if (off >= 0) { |
600 | while (off--) |
601 | s += UTF8SKIP(s); |
602 | } |
603 | else { |
604 | while (off++) { |
605 | s--; |
8850bf83 |
606 | while (UTF8_IS_CONTINUATION(*s)) |
607 | s--; |
a0ed51b3 |
608 | } |
609 | } |
610 | return s; |
611 | } |
612 | |
6940069f |
613 | /* |
eebe1485 |
614 | =for apidoc A|U8 *|utf8_to_bytes|U8 *s|STRLEN *len |
6940069f |
615 | |
246fae53 |
616 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
617 | Unlike C<bytes_to_utf8>, this over-writes the original string, and |
618 | updates len to contain the new length. |
67e989fb |
619 | Returns zero on failure, setting C<len> to -1. |
6940069f |
620 | |
621 | =cut |
622 | */ |
623 | |
624 | U8 * |
37607a96 |
625 | Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len) |
6940069f |
626 | { |
6940069f |
627 | U8 *send; |
628 | U8 *d; |
dcad2880 |
629 | U8 *save = s; |
246fae53 |
630 | |
631 | /* ensure valid UTF8 and chars < 256 before updating string */ |
dcad2880 |
632 | for (send = s + *len; s < send; ) { |
633 | U8 c = *s++; |
634 | |
1d72bdf6 |
635 | if (!UTF8_IS_INVARIANT(c) && |
636 | (!UTF8_IS_DOWNGRADEABLE_START(c) || (s >= send) |
637 | || !(c = *s++) || !UTF8_IS_CONTINUATION(c))) { |
dcad2880 |
638 | *len = -1; |
639 | return 0; |
640 | } |
246fae53 |
641 | } |
dcad2880 |
642 | |
643 | d = s = save; |
6940069f |
644 | while (s < send) { |
ed646e6e |
645 | STRLEN ulen; |
9041c2e3 |
646 | *d++ = (U8)utf8_to_uvchr(s, &ulen); |
ed646e6e |
647 | s += ulen; |
6940069f |
648 | } |
649 | *d = '\0'; |
246fae53 |
650 | *len = d - save; |
6940069f |
651 | return save; |
652 | } |
653 | |
654 | /* |
f9a63242 |
655 | =for apidoc A|U8 *|bytes_from_utf8|U8 *s|STRLEN *len|bool *is_utf8 |
656 | |
657 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
658 | Unlike <utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to |
ef9edfd0 |
659 | the newly-created string, and updates C<len> to contain the new |
660 | length. Returns the original string if no conversion occurs, C<len> |
661 | is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to |
662 | 0 if C<s> is converted or contains all 7bit characters. |
f9a63242 |
663 | |
37607a96 |
664 | =cut |
665 | */ |
f9a63242 |
666 | |
667 | U8 * |
37607a96 |
668 | Perl_bytes_from_utf8(pTHX_ U8 *s, STRLEN *len, bool *is_utf8) |
f9a63242 |
669 | { |
f9a63242 |
670 | U8 *d; |
671 | U8 *start = s; |
db42d148 |
672 | U8 *send; |
f9a63242 |
673 | I32 count = 0; |
674 | |
675 | if (!*is_utf8) |
676 | return start; |
677 | |
ef9edfd0 |
678 | /* ensure valid UTF8 and chars < 256 before converting string */ |
f9a63242 |
679 | for (send = s + *len; s < send;) { |
680 | U8 c = *s++; |
1d72bdf6 |
681 | if (!UTF8_IS_INVARIANT(c)) { |
db42d148 |
682 | if (UTF8_IS_DOWNGRADEABLE_START(c) && s < send && |
683 | (c = *s++) && UTF8_IS_CONTINUATION(c)) |
684 | count++; |
685 | else |
f9a63242 |
686 | return start; |
db42d148 |
687 | } |
f9a63242 |
688 | } |
689 | |
690 | *is_utf8 = 0; |
691 | |
f9a63242 |
692 | Newz(801, d, (*len) - count + 1, U8); |
ef9edfd0 |
693 | s = start; start = d; |
f9a63242 |
694 | while (s < send) { |
695 | U8 c = *s++; |
c4d5f83a |
696 | if (!UTF8_IS_INVARIANT(c)) { |
697 | /* Then it is two-byte encoded */ |
698 | c = UTF8_ACCUMULATE(NATIVE_TO_UTF(c), *s++); |
699 | c = ASCII_TO_NATIVE(c); |
700 | } |
701 | *d++ = c; |
f9a63242 |
702 | } |
703 | *d = '\0'; |
704 | *len = d - start; |
705 | return start; |
706 | } |
707 | |
708 | /* |
eebe1485 |
709 | =for apidoc A|U8 *|bytes_to_utf8|U8 *s|STRLEN *len |
6940069f |
710 | |
711 | Converts a string C<s> of length C<len> from ASCII into UTF8 encoding. |
6662521e |
712 | Returns a pointer to the newly-created string, and sets C<len> to |
713 | reflect the new length. |
6940069f |
714 | |
497711e7 |
715 | =cut |
6940069f |
716 | */ |
717 | |
718 | U8* |
37607a96 |
719 | Perl_bytes_to_utf8(pTHX_ U8 *s, STRLEN *len) |
6940069f |
720 | { |
6940069f |
721 | U8 *send; |
722 | U8 *d; |
723 | U8 *dst; |
6662521e |
724 | send = s + (*len); |
6940069f |
725 | |
6662521e |
726 | Newz(801, d, (*len) * 2 + 1, U8); |
6940069f |
727 | dst = d; |
728 | |
729 | while (s < send) { |
db42d148 |
730 | UV uv = NATIVE_TO_ASCII(*s++); |
c4d5f83a |
731 | if (UNI_IS_INVARIANT(uv)) |
732 | *d++ = UTF_TO_NATIVE(uv); |
6940069f |
733 | else { |
90f44359 |
734 | *d++ = UTF8_EIGHT_BIT_HI(uv); |
735 | *d++ = UTF8_EIGHT_BIT_LO(uv); |
6940069f |
736 | } |
737 | } |
738 | *d = '\0'; |
6662521e |
739 | *len = d-dst; |
6940069f |
740 | return dst; |
741 | } |
742 | |
a0ed51b3 |
743 | /* |
dea0fc0b |
744 | * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8. |
a0ed51b3 |
745 | * |
746 | * Destination must be pre-extended to 3/2 source. Do not use in-place. |
747 | * We optimize for native, for obvious reasons. */ |
748 | |
749 | U8* |
dea0fc0b |
750 | Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
751 | { |
dea0fc0b |
752 | U8* pend; |
753 | U8* dstart = d; |
754 | |
755 | if (bytelen & 1) |
a7867d0a |
756 | Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen"); |
dea0fc0b |
757 | |
758 | pend = p + bytelen; |
759 | |
a0ed51b3 |
760 | while (p < pend) { |
dea0fc0b |
761 | UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */ |
762 | p += 2; |
a0ed51b3 |
763 | if (uv < 0x80) { |
764 | *d++ = uv; |
765 | continue; |
766 | } |
767 | if (uv < 0x800) { |
768 | *d++ = (( uv >> 6) | 0xc0); |
769 | *d++ = (( uv & 0x3f) | 0x80); |
770 | continue; |
771 | } |
772 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ |
dea0fc0b |
773 | UV low = *p++; |
774 | if (low < 0xdc00 || low >= 0xdfff) |
775 | Perl_croak(aTHX_ "Malformed UTF-16 surrogate"); |
a0ed51b3 |
776 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
777 | } |
778 | if (uv < 0x10000) { |
779 | *d++ = (( uv >> 12) | 0xe0); |
780 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
781 | *d++ = (( uv & 0x3f) | 0x80); |
782 | continue; |
783 | } |
784 | else { |
785 | *d++ = (( uv >> 18) | 0xf0); |
786 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
787 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
788 | *d++ = (( uv & 0x3f) | 0x80); |
789 | continue; |
790 | } |
791 | } |
dea0fc0b |
792 | *newlen = d - dstart; |
a0ed51b3 |
793 | return d; |
794 | } |
795 | |
796 | /* Note: this one is slightly destructive of the source. */ |
797 | |
798 | U8* |
dea0fc0b |
799 | Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
800 | { |
801 | U8* s = (U8*)p; |
802 | U8* send = s + bytelen; |
803 | while (s < send) { |
804 | U8 tmp = s[0]; |
805 | s[0] = s[1]; |
806 | s[1] = tmp; |
807 | s += 2; |
808 | } |
dea0fc0b |
809 | return utf16_to_utf8(p, d, bytelen, newlen); |
a0ed51b3 |
810 | } |
811 | |
812 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ |
813 | |
814 | bool |
84afefe6 |
815 | Perl_is_uni_alnum(pTHX_ UV c) |
a0ed51b3 |
816 | { |
ad391ad9 |
817 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
818 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
819 | return is_utf8_alnum(tmpbuf); |
820 | } |
821 | |
822 | bool |
84afefe6 |
823 | Perl_is_uni_alnumc(pTHX_ UV c) |
b8c5462f |
824 | { |
ad391ad9 |
825 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
826 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
827 | return is_utf8_alnumc(tmpbuf); |
828 | } |
829 | |
830 | bool |
84afefe6 |
831 | Perl_is_uni_idfirst(pTHX_ UV c) |
a0ed51b3 |
832 | { |
ad391ad9 |
833 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
834 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
835 | return is_utf8_idfirst(tmpbuf); |
836 | } |
837 | |
838 | bool |
84afefe6 |
839 | Perl_is_uni_alpha(pTHX_ UV c) |
a0ed51b3 |
840 | { |
ad391ad9 |
841 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
842 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
843 | return is_utf8_alpha(tmpbuf); |
844 | } |
845 | |
846 | bool |
84afefe6 |
847 | Perl_is_uni_ascii(pTHX_ UV c) |
4d61ec05 |
848 | { |
ad391ad9 |
849 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
850 | uvchr_to_utf8(tmpbuf, (UV)c); |
4d61ec05 |
851 | return is_utf8_ascii(tmpbuf); |
852 | } |
853 | |
854 | bool |
84afefe6 |
855 | Perl_is_uni_space(pTHX_ UV c) |
a0ed51b3 |
856 | { |
ad391ad9 |
857 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
858 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
859 | return is_utf8_space(tmpbuf); |
860 | } |
861 | |
862 | bool |
84afefe6 |
863 | Perl_is_uni_digit(pTHX_ UV c) |
a0ed51b3 |
864 | { |
ad391ad9 |
865 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
866 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
867 | return is_utf8_digit(tmpbuf); |
868 | } |
869 | |
870 | bool |
84afefe6 |
871 | Perl_is_uni_upper(pTHX_ UV c) |
a0ed51b3 |
872 | { |
ad391ad9 |
873 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
874 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
875 | return is_utf8_upper(tmpbuf); |
876 | } |
877 | |
878 | bool |
84afefe6 |
879 | Perl_is_uni_lower(pTHX_ UV c) |
a0ed51b3 |
880 | { |
ad391ad9 |
881 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
882 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
883 | return is_utf8_lower(tmpbuf); |
884 | } |
885 | |
886 | bool |
84afefe6 |
887 | Perl_is_uni_cntrl(pTHX_ UV c) |
b8c5462f |
888 | { |
ad391ad9 |
889 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
890 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
891 | return is_utf8_cntrl(tmpbuf); |
892 | } |
893 | |
894 | bool |
84afefe6 |
895 | Perl_is_uni_graph(pTHX_ UV c) |
b8c5462f |
896 | { |
ad391ad9 |
897 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
898 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
899 | return is_utf8_graph(tmpbuf); |
900 | } |
901 | |
902 | bool |
84afefe6 |
903 | Perl_is_uni_print(pTHX_ UV c) |
a0ed51b3 |
904 | { |
ad391ad9 |
905 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
906 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
907 | return is_utf8_print(tmpbuf); |
908 | } |
909 | |
b8c5462f |
910 | bool |
84afefe6 |
911 | Perl_is_uni_punct(pTHX_ UV c) |
b8c5462f |
912 | { |
ad391ad9 |
913 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
914 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
915 | return is_utf8_punct(tmpbuf); |
916 | } |
917 | |
4d61ec05 |
918 | bool |
84afefe6 |
919 | Perl_is_uni_xdigit(pTHX_ UV c) |
4d61ec05 |
920 | { |
e7ae6809 |
921 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
922 | uvchr_to_utf8(tmpbuf, (UV)c); |
4d61ec05 |
923 | return is_utf8_xdigit(tmpbuf); |
924 | } |
925 | |
84afefe6 |
926 | UV |
927 | Perl_to_uni_upper(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
928 | { |
e7ae6809 |
929 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
930 | uvchr_to_utf8(tmpbuf, (UV)c); |
a2a2844f |
931 | return to_utf8_upper(tmpbuf, p, lenp); |
a0ed51b3 |
932 | } |
933 | |
84afefe6 |
934 | UV |
935 | Perl_to_uni_title(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
936 | { |
e7ae6809 |
937 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
938 | uvchr_to_utf8(tmpbuf, (UV)c); |
a2a2844f |
939 | return to_utf8_title(tmpbuf, p, lenp); |
a0ed51b3 |
940 | } |
941 | |
84afefe6 |
942 | UV |
943 | Perl_to_uni_lower(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
944 | { |
d90824e8 |
945 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
946 | uvchr_to_utf8(tmpbuf, (UV)c); |
a2a2844f |
947 | return to_utf8_lower(tmpbuf, p, lenp); |
a0ed51b3 |
948 | } |
949 | |
84afefe6 |
950 | UV |
951 | Perl_to_uni_fold(pTHX_ UV c, U8* p, STRLEN *lenp) |
952 | { |
d90824e8 |
953 | U8 tmpbuf[UTF8_MAXLEN_FOLD+1]; |
84afefe6 |
954 | uvchr_to_utf8(tmpbuf, (UV)c); |
955 | return to_utf8_fold(tmpbuf, p, lenp); |
956 | } |
957 | |
a0ed51b3 |
958 | /* for now these all assume no locale info available for Unicode > 255 */ |
959 | |
960 | bool |
84afefe6 |
961 | Perl_is_uni_alnum_lc(pTHX_ UV c) |
a0ed51b3 |
962 | { |
963 | return is_uni_alnum(c); /* XXX no locale support yet */ |
964 | } |
965 | |
966 | bool |
84afefe6 |
967 | Perl_is_uni_alnumc_lc(pTHX_ UV c) |
b8c5462f |
968 | { |
969 | return is_uni_alnumc(c); /* XXX no locale support yet */ |
970 | } |
971 | |
972 | bool |
84afefe6 |
973 | Perl_is_uni_idfirst_lc(pTHX_ UV c) |
a0ed51b3 |
974 | { |
975 | return is_uni_idfirst(c); /* XXX no locale support yet */ |
976 | } |
977 | |
978 | bool |
84afefe6 |
979 | Perl_is_uni_alpha_lc(pTHX_ UV c) |
a0ed51b3 |
980 | { |
981 | return is_uni_alpha(c); /* XXX no locale support yet */ |
982 | } |
983 | |
984 | bool |
84afefe6 |
985 | Perl_is_uni_ascii_lc(pTHX_ UV c) |
4d61ec05 |
986 | { |
987 | return is_uni_ascii(c); /* XXX no locale support yet */ |
988 | } |
989 | |
990 | bool |
84afefe6 |
991 | Perl_is_uni_space_lc(pTHX_ UV c) |
a0ed51b3 |
992 | { |
993 | return is_uni_space(c); /* XXX no locale support yet */ |
994 | } |
995 | |
996 | bool |
84afefe6 |
997 | Perl_is_uni_digit_lc(pTHX_ UV c) |
a0ed51b3 |
998 | { |
999 | return is_uni_digit(c); /* XXX no locale support yet */ |
1000 | } |
1001 | |
1002 | bool |
84afefe6 |
1003 | Perl_is_uni_upper_lc(pTHX_ UV c) |
a0ed51b3 |
1004 | { |
1005 | return is_uni_upper(c); /* XXX no locale support yet */ |
1006 | } |
1007 | |
1008 | bool |
84afefe6 |
1009 | Perl_is_uni_lower_lc(pTHX_ UV c) |
a0ed51b3 |
1010 | { |
1011 | return is_uni_lower(c); /* XXX no locale support yet */ |
1012 | } |
1013 | |
1014 | bool |
84afefe6 |
1015 | Perl_is_uni_cntrl_lc(pTHX_ UV c) |
b8c5462f |
1016 | { |
1017 | return is_uni_cntrl(c); /* XXX no locale support yet */ |
1018 | } |
1019 | |
1020 | bool |
84afefe6 |
1021 | Perl_is_uni_graph_lc(pTHX_ UV c) |
b8c5462f |
1022 | { |
1023 | return is_uni_graph(c); /* XXX no locale support yet */ |
1024 | } |
1025 | |
1026 | bool |
84afefe6 |
1027 | Perl_is_uni_print_lc(pTHX_ UV c) |
a0ed51b3 |
1028 | { |
1029 | return is_uni_print(c); /* XXX no locale support yet */ |
1030 | } |
1031 | |
b8c5462f |
1032 | bool |
84afefe6 |
1033 | Perl_is_uni_punct_lc(pTHX_ UV c) |
b8c5462f |
1034 | { |
1035 | return is_uni_punct(c); /* XXX no locale support yet */ |
1036 | } |
1037 | |
4d61ec05 |
1038 | bool |
84afefe6 |
1039 | Perl_is_uni_xdigit_lc(pTHX_ UV c) |
4d61ec05 |
1040 | { |
1041 | return is_uni_xdigit(c); /* XXX no locale support yet */ |
1042 | } |
1043 | |
b7ac61fa |
1044 | U32 |
1045 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
1046 | { |
1047 | return to_uni_upper(c); /* XXX no locale support yet */ |
1048 | } |
1049 | |
1050 | U32 |
1051 | Perl_to_uni_title_lc(pTHX_ U32 c) |
1052 | { |
1053 | return to_uni_title(c); /* XXX no locale support yet */ |
1054 | } |
1055 | |
1056 | U32 |
1057 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
1058 | { |
1059 | return to_uni_lower(c); /* XXX no locale support yet */ |
1060 | } |
1061 | |
a0ed51b3 |
1062 | bool |
864dbfa3 |
1063 | Perl_is_utf8_alnum(pTHX_ U8 *p) |
a0ed51b3 |
1064 | { |
386d01d6 |
1065 | if (!is_utf8_char(p)) |
1066 | return FALSE; |
a0ed51b3 |
1067 | if (!PL_utf8_alnum) |
289d4f09 |
1068 | /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true |
1069 | * descendant of isalnum(3), in other words, it doesn't |
1070 | * contain the '_'. --jhi */ |
1071 | PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0); |
3568d838 |
1072 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
a0ed51b3 |
1073 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ |
1074 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1075 | if (!PL_utf8_alnum) |
1076 | PL_utf8_alnum = swash_init("utf8", "", |
1077 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
3568d838 |
1078 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
a0ed51b3 |
1079 | #endif |
1080 | } |
1081 | |
1082 | bool |
b8c5462f |
1083 | Perl_is_utf8_alnumc(pTHX_ U8 *p) |
1084 | { |
386d01d6 |
1085 | if (!is_utf8_char(p)) |
1086 | return FALSE; |
b8c5462f |
1087 | if (!PL_utf8_alnum) |
1088 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); |
3568d838 |
1089 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
b8c5462f |
1090 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ |
1091 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1092 | if (!PL_utf8_alnum) |
1093 | PL_utf8_alnum = swash_init("utf8", "", |
1094 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
3568d838 |
1095 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
b8c5462f |
1096 | #endif |
1097 | } |
1098 | |
1099 | bool |
864dbfa3 |
1100 | Perl_is_utf8_idfirst(pTHX_ U8 *p) |
a0ed51b3 |
1101 | { |
1102 | return *p == '_' || is_utf8_alpha(p); |
1103 | } |
1104 | |
1105 | bool |
864dbfa3 |
1106 | Perl_is_utf8_alpha(pTHX_ U8 *p) |
a0ed51b3 |
1107 | { |
386d01d6 |
1108 | if (!is_utf8_char(p)) |
1109 | return FALSE; |
a0ed51b3 |
1110 | if (!PL_utf8_alpha) |
e24b16f9 |
1111 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
3568d838 |
1112 | return swash_fetch(PL_utf8_alpha, p, TRUE); |
a0ed51b3 |
1113 | } |
1114 | |
1115 | bool |
b8c5462f |
1116 | Perl_is_utf8_ascii(pTHX_ U8 *p) |
1117 | { |
386d01d6 |
1118 | if (!is_utf8_char(p)) |
1119 | return FALSE; |
b8c5462f |
1120 | if (!PL_utf8_ascii) |
1121 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); |
3568d838 |
1122 | return swash_fetch(PL_utf8_ascii, p, TRUE); |
b8c5462f |
1123 | } |
1124 | |
1125 | bool |
864dbfa3 |
1126 | Perl_is_utf8_space(pTHX_ U8 *p) |
a0ed51b3 |
1127 | { |
386d01d6 |
1128 | if (!is_utf8_char(p)) |
1129 | return FALSE; |
a0ed51b3 |
1130 | if (!PL_utf8_space) |
3bec3564 |
1131 | PL_utf8_space = swash_init("utf8", "IsSpacePerl", &PL_sv_undef, 0, 0); |
3568d838 |
1132 | return swash_fetch(PL_utf8_space, p, TRUE); |
a0ed51b3 |
1133 | } |
1134 | |
1135 | bool |
864dbfa3 |
1136 | Perl_is_utf8_digit(pTHX_ U8 *p) |
a0ed51b3 |
1137 | { |
386d01d6 |
1138 | if (!is_utf8_char(p)) |
1139 | return FALSE; |
a0ed51b3 |
1140 | if (!PL_utf8_digit) |
e24b16f9 |
1141 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
3568d838 |
1142 | return swash_fetch(PL_utf8_digit, p, TRUE); |
a0ed51b3 |
1143 | } |
1144 | |
1145 | bool |
864dbfa3 |
1146 | Perl_is_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 |
1147 | { |
386d01d6 |
1148 | if (!is_utf8_char(p)) |
1149 | return FALSE; |
a0ed51b3 |
1150 | if (!PL_utf8_upper) |
e24b16f9 |
1151 | PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0); |
3568d838 |
1152 | return swash_fetch(PL_utf8_upper, p, TRUE); |
a0ed51b3 |
1153 | } |
1154 | |
1155 | bool |
864dbfa3 |
1156 | Perl_is_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 |
1157 | { |
386d01d6 |
1158 | if (!is_utf8_char(p)) |
1159 | return FALSE; |
a0ed51b3 |
1160 | if (!PL_utf8_lower) |
e24b16f9 |
1161 | PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0); |
3568d838 |
1162 | return swash_fetch(PL_utf8_lower, p, TRUE); |
a0ed51b3 |
1163 | } |
1164 | |
1165 | bool |
b8c5462f |
1166 | Perl_is_utf8_cntrl(pTHX_ U8 *p) |
1167 | { |
386d01d6 |
1168 | if (!is_utf8_char(p)) |
1169 | return FALSE; |
b8c5462f |
1170 | if (!PL_utf8_cntrl) |
1171 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); |
3568d838 |
1172 | return swash_fetch(PL_utf8_cntrl, p, TRUE); |
b8c5462f |
1173 | } |
1174 | |
1175 | bool |
1176 | Perl_is_utf8_graph(pTHX_ U8 *p) |
1177 | { |
386d01d6 |
1178 | if (!is_utf8_char(p)) |
1179 | return FALSE; |
b8c5462f |
1180 | if (!PL_utf8_graph) |
1181 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); |
3568d838 |
1182 | return swash_fetch(PL_utf8_graph, p, TRUE); |
b8c5462f |
1183 | } |
1184 | |
1185 | bool |
864dbfa3 |
1186 | Perl_is_utf8_print(pTHX_ U8 *p) |
a0ed51b3 |
1187 | { |
386d01d6 |
1188 | if (!is_utf8_char(p)) |
1189 | return FALSE; |
a0ed51b3 |
1190 | if (!PL_utf8_print) |
e24b16f9 |
1191 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
3568d838 |
1192 | return swash_fetch(PL_utf8_print, p, TRUE); |
a0ed51b3 |
1193 | } |
1194 | |
1195 | bool |
b8c5462f |
1196 | Perl_is_utf8_punct(pTHX_ U8 *p) |
1197 | { |
386d01d6 |
1198 | if (!is_utf8_char(p)) |
1199 | return FALSE; |
b8c5462f |
1200 | if (!PL_utf8_punct) |
1201 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); |
3568d838 |
1202 | return swash_fetch(PL_utf8_punct, p, TRUE); |
b8c5462f |
1203 | } |
1204 | |
1205 | bool |
1206 | Perl_is_utf8_xdigit(pTHX_ U8 *p) |
1207 | { |
386d01d6 |
1208 | if (!is_utf8_char(p)) |
1209 | return FALSE; |
b8c5462f |
1210 | if (!PL_utf8_xdigit) |
1211 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); |
3568d838 |
1212 | return swash_fetch(PL_utf8_xdigit, p, TRUE); |
b8c5462f |
1213 | } |
1214 | |
1215 | bool |
864dbfa3 |
1216 | Perl_is_utf8_mark(pTHX_ U8 *p) |
a0ed51b3 |
1217 | { |
386d01d6 |
1218 | if (!is_utf8_char(p)) |
1219 | return FALSE; |
a0ed51b3 |
1220 | if (!PL_utf8_mark) |
e24b16f9 |
1221 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
3568d838 |
1222 | return swash_fetch(PL_utf8_mark, p, TRUE); |
a0ed51b3 |
1223 | } |
1224 | |
6b5c0936 |
1225 | /* |
1226 | =for apidoc A|UV|to_utf8_case|U8 *p|U8* ustrp|STRLEN *lenp|SV **swash|char *normal|char *special |
1227 | |
1228 | The "p" contains the pointer to the UTF-8 string encoding |
1229 | the character that is being converted. |
1230 | |
1231 | The "ustrp" is a pointer to the character buffer to put the |
1232 | conversion result to. The "lenp" is a pointer to the length |
1233 | of the result. |
1234 | |
1235 | The "swash" is a pointer to the swash to use. |
1236 | |
1237 | The "normal" is a string like "ToLower" which means the swash |
1238 | $utf8::ToLower, which is stored in lib/unicore/To/Lower.pl, |
1239 | and loaded by SWASHGET, using lib/utf8_heavy.pl. |
1240 | |
1241 | The "special" is a string like "utf8::ToSpecLower", which means |
d1be9408 |
1242 | the hash %utf8::ToSpecLower, which is stored in the same file, |
6b5c0936 |
1243 | lib/unicore/To/Lower.pl, and also loaded by SWASHGET. The access |
1244 | to the hash is by Perl_to_utf8_case(). |
1245 | |
1246 | =cut |
1247 | */ |
1248 | |
2104c8d9 |
1249 | UV |
983ffd37 |
1250 | Perl_to_utf8_case(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp, SV **swashp,char *normal, char *special) |
a0ed51b3 |
1251 | { |
1252 | UV uv; |
1253 | |
983ffd37 |
1254 | if (!*swashp) |
1255 | *swashp = swash_init("utf8", normal, &PL_sv_undef, 4, 0); |
1256 | uv = swash_fetch(*swashp, p, TRUE); |
1257 | if (uv) |
1258 | uv = UNI_TO_NATIVE(uv); |
1259 | else { |
1260 | HV *hv; |
1261 | SV *keysv; |
1262 | HE *he; |
1263 | |
1264 | uv = utf8_to_uvchr(p, 0); |
1265 | |
1266 | if ((hv = get_hv(special, FALSE)) && |
6d47b937 |
1267 | (keysv = sv_2mortal(Perl_newSVpvf(aTHX_ "%04"UVXf, uv))) && |
983ffd37 |
1268 | (he = hv_fetch_ent(hv, keysv, FALSE, 0))) { |
1269 | SV *val = HeVAL(he); |
1270 | char *s = SvPV(val, *lenp); |
1271 | U8 c = *(U8*)s; |
1272 | if (*lenp > 1 || UNI_IS_INVARIANT(c)) |
1273 | Copy(s, ustrp, *lenp, U8); |
1274 | else { |
1275 | /* something in the 0x80..0xFF range */ |
1276 | ustrp[0] = UTF8_EIGHT_BIT_HI(c); |
1277 | ustrp[1] = UTF8_EIGHT_BIT_LO(c); |
1278 | *lenp = 2; |
1279 | } |
1280 | return 0; |
1281 | } |
1282 | } |
a58d912c |
1283 | if (lenp) |
d90824e8 |
1284 | *lenp = UNISKIP(uv); |
a2a2844f |
1285 | uvuni_to_utf8(ustrp, uv); |
1286 | return uv; |
a0ed51b3 |
1287 | } |
1288 | |
2104c8d9 |
1289 | UV |
983ffd37 |
1290 | Perl_to_utf8_upper(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1291 | { |
983ffd37 |
1292 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1293 | &PL_utf8_toupper, "ToUpper", "utf8::ToSpecUpper"); |
983ffd37 |
1294 | } |
a0ed51b3 |
1295 | |
983ffd37 |
1296 | UV |
1297 | Perl_to_utf8_title(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
1298 | { |
1299 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1300 | &PL_utf8_totitle, "ToTitle", "utf8::ToSpecTitle"); |
a0ed51b3 |
1301 | } |
1302 | |
2104c8d9 |
1303 | UV |
a2a2844f |
1304 | Perl_to_utf8_lower(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1305 | { |
983ffd37 |
1306 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1307 | &PL_utf8_tolower, "ToLower", "utf8::ToSpecLower"); |
1308 | } |
1309 | |
1310 | UV |
1311 | Perl_to_utf8_fold(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
1312 | { |
1313 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
1314 | &PL_utf8_tofold, "ToFold", "utf8::ToSpecFold"); |
a0ed51b3 |
1315 | } |
1316 | |
1317 | /* a "swash" is a swatch hash */ |
1318 | |
1319 | SV* |
864dbfa3 |
1320 | Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 |
1321 | { |
1322 | SV* retval; |
bf1fed83 |
1323 | SV* tokenbufsv = sv_2mortal(NEWSV(0,0)); |
8e84507e |
1324 | dSP; |
1b026014 |
1325 | HV *stash = gv_stashpvn(pkg, strlen(pkg), FALSE); |
f8be5cf0 |
1326 | SV* errsv_save; |
ce3b816e |
1327 | |
1b026014 |
1328 | if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */ |
ce3b816e |
1329 | ENTER; |
f8be5cf0 |
1330 | errsv_save = newSVsv(ERRSV); |
ce3b816e |
1331 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv); |
f8be5cf0 |
1332 | if (!SvTRUE(ERRSV)) |
1333 | sv_setsv(ERRSV, errsv_save); |
1334 | SvREFCNT_dec(errsv_save); |
ce3b816e |
1335 | LEAVE; |
1336 | } |
1337 | SPAGAIN; |
a0ed51b3 |
1338 | PUSHSTACKi(PERLSI_MAGIC); |
1339 | PUSHMARK(SP); |
1340 | EXTEND(SP,5); |
1341 | PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg)))); |
1342 | PUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
1343 | PUSHs(listsv); |
1344 | PUSHs(sv_2mortal(newSViv(minbits))); |
1345 | PUSHs(sv_2mortal(newSViv(none))); |
1346 | PUTBACK; |
1347 | ENTER; |
1348 | SAVEI32(PL_hints); |
1349 | PL_hints = 0; |
1350 | save_re_context(); |
bf1fed83 |
1351 | if (PL_curcop == &PL_compiling) |
1352 | /* XXX ought to be handled by lex_start */ |
1353 | sv_setpv(tokenbufsv, PL_tokenbuf); |
f8be5cf0 |
1354 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1355 | if (call_method("SWASHNEW", G_SCALAR)) |
8e84507e |
1356 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1357 | else |
e24b16f9 |
1358 | retval = &PL_sv_undef; |
f8be5cf0 |
1359 | if (!SvTRUE(ERRSV)) |
1360 | sv_setsv(ERRSV, errsv_save); |
1361 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1362 | LEAVE; |
1363 | POPSTACK; |
e24b16f9 |
1364 | if (PL_curcop == &PL_compiling) { |
bf1fed83 |
1365 | STRLEN len; |
1366 | char* pv = SvPV(tokenbufsv, len); |
1367 | |
1368 | Copy(pv, PL_tokenbuf, len+1, char); |
e24b16f9 |
1369 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1370 | } |
1371 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) |
cea2e8a9 |
1372 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
a0ed51b3 |
1373 | return retval; |
1374 | } |
1375 | |
035d37be |
1376 | |
1377 | /* This API is wrong for special case conversions since we may need to |
1378 | * return several Unicode characters for a single Unicode character |
1379 | * (see lib/unicore/SpecCase.txt) The SWASHGET in lib/utf8_heavy.pl is |
1380 | * the lower-level routine, and it is similarly broken for returning |
1381 | * multiple values. --jhi */ |
a0ed51b3 |
1382 | UV |
3568d838 |
1383 | Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr, bool do_utf8) |
a0ed51b3 |
1384 | { |
1385 | HV* hv = (HV*)SvRV(sv); |
3568d838 |
1386 | U32 klen; |
1387 | U32 off; |
a0ed51b3 |
1388 | STRLEN slen; |
7d85a32c |
1389 | STRLEN needents; |
4ea42e7f |
1390 | U8 *tmps = NULL; |
a0ed51b3 |
1391 | U32 bit; |
1392 | SV *retval; |
3568d838 |
1393 | U8 tmputf8[2]; |
1394 | UV c = NATIVE_TO_ASCII(*ptr); |
1395 | |
1396 | if (!do_utf8 && !UNI_IS_INVARIANT(c)) { |
1397 | tmputf8[0] = UTF8_EIGHT_BIT_HI(c); |
1398 | tmputf8[1] = UTF8_EIGHT_BIT_LO(c); |
1399 | ptr = tmputf8; |
1400 | } |
1401 | /* Given a UTF-X encoded char 0xAA..0xYY,0xZZ |
1402 | * then the "swatch" is a vec() for al the chars which start |
1403 | * with 0xAA..0xYY |
1404 | * So the key in the hash (klen) is length of encoded char -1 |
1405 | */ |
1406 | klen = UTF8SKIP(ptr) - 1; |
1407 | off = ptr[klen]; |
a0ed51b3 |
1408 | |
7d85a32c |
1409 | if (klen == 0) |
1410 | { |
1411 | /* If char in invariant then swatch is for all the invariant chars |
1412 | * In both UTF-8 and UTF8-MOD that happens to be UTF_CONTINUATION_MARK |
1413 | */ |
1414 | needents = UTF_CONTINUATION_MARK; |
1415 | off = NATIVE_TO_UTF(ptr[klen]); |
1416 | } |
1417 | else |
1418 | { |
1419 | /* If char is encoded then swatch is for the prefix */ |
1420 | needents = (1 << UTF_ACCUMULATION_SHIFT); |
1421 | off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK; |
1422 | } |
1423 | |
a0ed51b3 |
1424 | /* |
1425 | * This single-entry cache saves about 1/3 of the utf8 overhead in test |
1426 | * suite. (That is, only 7-8% overall over just a hash cache. Still, |
1427 | * it's nothing to sniff at.) Pity we usually come through at least |
1428 | * two function calls to get here... |
1429 | * |
1430 | * NB: this code assumes that swatches are never modified, once generated! |
1431 | */ |
1432 | |
3568d838 |
1433 | if (hv == PL_last_swash_hv && |
a0ed51b3 |
1434 | klen == PL_last_swash_klen && |
3568d838 |
1435 | (!klen || memEQ((char *)ptr, (char *)PL_last_swash_key, klen)) ) |
a0ed51b3 |
1436 | { |
1437 | tmps = PL_last_swash_tmps; |
1438 | slen = PL_last_swash_slen; |
1439 | } |
1440 | else { |
1441 | /* Try our second-level swatch cache, kept in a hash. */ |
dfe13c55 |
1442 | SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE); |
a0ed51b3 |
1443 | |
1444 | /* If not cached, generate it via utf8::SWASHGET */ |
dfe13c55 |
1445 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
a0ed51b3 |
1446 | dSP; |
2b9d42f0 |
1447 | /* We use utf8n_to_uvuni() as we want an index into |
1448 | Unicode tables, not a native character number. |
1449 | */ |
1450 | UV code_point = utf8n_to_uvuni(ptr, UTF8_MAXLEN, NULL, 0); |
f8be5cf0 |
1451 | SV *errsv_save; |
a0ed51b3 |
1452 | ENTER; |
1453 | SAVETMPS; |
1454 | save_re_context(); |
1455 | PUSHSTACKi(PERLSI_MAGIC); |
1456 | PUSHMARK(SP); |
1457 | EXTEND(SP,3); |
1458 | PUSHs((SV*)sv); |
ffbc6a93 |
1459 | /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */ |
3568d838 |
1460 | PUSHs(sv_2mortal(newSViv((klen) ? |
1461 | (code_point & ~(needents - 1)) : 0))); |
a0ed51b3 |
1462 | PUSHs(sv_2mortal(newSViv(needents))); |
1463 | PUTBACK; |
f8be5cf0 |
1464 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1465 | if (call_method("SWASHGET", G_SCALAR)) |
8e84507e |
1466 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1467 | else |
e24b16f9 |
1468 | retval = &PL_sv_undef; |
f8be5cf0 |
1469 | if (!SvTRUE(ERRSV)) |
1470 | sv_setsv(ERRSV, errsv_save); |
1471 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1472 | POPSTACK; |
1473 | FREETMPS; |
1474 | LEAVE; |
e24b16f9 |
1475 | if (PL_curcop == &PL_compiling) |
1476 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1477 | |
dfe13c55 |
1478 | svp = hv_store(hv, (char*)ptr, klen, retval, 0); |
a0ed51b3 |
1479 | |
7d85a32c |
1480 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || (slen << 3) < needents) |
cea2e8a9 |
1481 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 |
1482 | } |
1483 | |
1484 | PL_last_swash_hv = hv; |
1485 | PL_last_swash_klen = klen; |
1486 | PL_last_swash_tmps = tmps; |
1487 | PL_last_swash_slen = slen; |
1488 | if (klen) |
1489 | Copy(ptr, PL_last_swash_key, klen, U8); |
1490 | } |
1491 | |
9faf8d75 |
1492 | switch ((int)((slen << 3) / needents)) { |
a0ed51b3 |
1493 | case 1: |
1494 | bit = 1 << (off & 7); |
1495 | off >>= 3; |
1496 | return (tmps[off] & bit) != 0; |
1497 | case 8: |
1498 | return tmps[off]; |
1499 | case 16: |
1500 | off <<= 1; |
1501 | return (tmps[off] << 8) + tmps[off + 1] ; |
1502 | case 32: |
1503 | off <<= 2; |
1504 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; |
1505 | } |
cea2e8a9 |
1506 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 |
1507 | return 0; |
1508 | } |
2b9d42f0 |
1509 | |
1510 | |
1511 | /* |
37607a96 |
1512 | =for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv |
2b9d42f0 |
1513 | |
1514 | Adds the UTF8 representation of the Native codepoint C<uv> to the end |
1515 | of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free |
1516 | bytes available. The return value is the pointer to the byte after the |
1517 | end of the new character. In other words, |
1518 | |
1519 | d = uvchr_to_utf8(d, uv); |
1520 | |
1521 | is the recommended wide native character-aware way of saying |
1522 | |
1523 | *(d++) = uv; |
1524 | |
1525 | =cut |
1526 | */ |
1527 | |
1528 | /* On ASCII machines this is normally a macro but we want a |
1529 | real function in case XS code wants it |
1530 | */ |
1531 | #undef Perl_uvchr_to_utf8 |
1532 | U8 * |
1533 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) |
1534 | { |
1535 | return Perl_uvuni_to_utf8(aTHX_ d, NATIVE_TO_UNI(uv)); |
1536 | } |
1537 | |
1538 | |
1539 | /* |
37607a96 |
1540 | =for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
2b9d42f0 |
1541 | |
1542 | Returns the native character value of the first character in the string C<s> |
1543 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
1544 | length, in bytes, of that character. |
1545 | |
1546 | Allows length and flags to be passed to low level routine. |
1547 | |
1548 | =cut |
1549 | */ |
1550 | /* On ASCII machines this is normally a macro but we want a |
1551 | real function in case XS code wants it |
1552 | */ |
1553 | #undef Perl_utf8n_to_uvchr |
1554 | UV |
37607a96 |
1555 | Perl_utf8n_to_uvchr(pTHX_ U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
2b9d42f0 |
1556 | { |
1557 | UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); |
1558 | return UNI_TO_NATIVE(uv); |
1559 | } |
1560 | |
d2cc3551 |
1561 | /* |
1562 | =for apidoc A|char *|pv_uni_display|SV *dsv|U8 *spv|STRLEN len|STRLEN pvlim|UV flags |
1563 | |
1564 | Build to the scalar dsv a displayable version of the string spv, |
1565 | length len, the displayable version being at most pvlim bytes long |
1566 | (if longer, the rest is truncated and "..." will be appended). |
1567 | The flags argument is currently unused but available for future extensions. |
1568 | The pointer to the PV of the dsv is returned. |
1569 | |
1570 | =cut */ |
e6b2e755 |
1571 | char * |
1572 | Perl_pv_uni_display(pTHX_ SV *dsv, U8 *spv, STRLEN len, STRLEN pvlim, UV flags) |
1573 | { |
1574 | int truncated = 0; |
1575 | char *s, *e; |
1576 | |
1577 | sv_setpvn(dsv, "", 0); |
1578 | for (s = (char *)spv, e = s + len; s < e; s += UTF8SKIP(s)) { |
1579 | UV u; |
1580 | if (pvlim && SvCUR(dsv) >= pvlim) { |
1581 | truncated++; |
1582 | break; |
1583 | } |
1584 | u = utf8_to_uvchr((U8*)s, 0); |
1585 | Perl_sv_catpvf(aTHX_ dsv, "\\x{%"UVxf"}", u); |
1586 | } |
1587 | if (truncated) |
1588 | sv_catpvn(dsv, "...", 3); |
1589 | |
1590 | return SvPVX(dsv); |
1591 | } |
2b9d42f0 |
1592 | |
d2cc3551 |
1593 | /* |
1594 | =for apidoc A|char *|sv_uni_display|SV *dsv|SV *ssv|STRLEN pvlim|UV flags |
1595 | |
1596 | Build to the scalar dsv a displayable version of the scalar sv, |
1597 | he displayable version being at most pvlim bytes long |
1598 | (if longer, the rest is truncated and "..." will be appended). |
1599 | The flags argument is currently unused but available for future extensions. |
1600 | The pointer to the PV of the dsv is returned. |
1601 | |
1602 | =cut */ |
e6b2e755 |
1603 | char * |
1604 | Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags) |
1605 | { |
701a277b |
1606 | return Perl_pv_uni_display(aTHX_ dsv, (U8*)SvPVX(ssv), SvCUR(ssv), |
1607 | pvlim, flags); |
1608 | } |
1609 | |
d2cc3551 |
1610 | /* |
1611 | =for apidoc A|I32|ibcmp_utf8|const char *s1|bool u1|const char *s2|bool u2|register I32 len |
1612 | |
1613 | Return true if the strings s1 and s2 differ case-insensitively, false |
1614 | if not (if they are equal case-insensitively). If u1 is true, the |
1615 | string s1 is assumed to be in UTF-8-encoded Unicode. If u2 is true, |
332ddc25 |
1616 | the string s2 is assumed to be in UTF-8-encoded Unicode. |
d2cc3551 |
1617 | |
1618 | For case-insensitiveness, the "casefolding" of Unicode is used |
1619 | instead of upper/lowercasing both the characters, see |
1620 | http://www.unicode.org/unicode/reports/tr21/ (Case Mappings). |
1621 | |
1622 | =cut */ |
701a277b |
1623 | I32 |
332ddc25 |
1624 | Perl_ibcmp_utf8(pTHX_ const char *s1, bool u1, register I32 len1, const char *s2, bool u2, register I32 len2) |
1625 | { |
1626 | register U8 *a = (U8*)s1; |
1627 | register U8 *b = (U8*)s2; |
1628 | register U8 *ae = b + len1; |
1629 | register U8 *be = b + len2; |
1630 | STRLEN la, lb; |
1631 | UV ca, cb; |
1632 | STRLEN ulen1, ulen2; |
e7ae6809 |
1633 | U8 tmpbuf1[UTF8_MAXLEN_FOLD+1]; |
1634 | U8 tmpbuf2[UTF8_MAXLEN_FOLD+1]; |
332ddc25 |
1635 | |
1636 | while (a < ae && b < be) { |
1637 | if (u1) { |
1638 | if (a + UTF8SKIP(a) > ae) |
1639 | break; |
1640 | ca = utf8_to_uvchr((U8*)a, &la); |
1641 | } else { |
1642 | ca = *a; |
1643 | la = 1; |
1644 | } |
1645 | if (u2) { |
1646 | if (b + UTF8SKIP(b) > be) |
1647 | break; |
1648 | cb = utf8_to_uvchr((U8*)b, &lb); |
1649 | } else { |
1650 | cb = *b; |
1651 | lb = 1; |
1652 | } |
1653 | if (ca != cb) { |
701a277b |
1654 | if (u1) |
332ddc25 |
1655 | to_uni_fold(NATIVE_TO_UNI(ca), tmpbuf1, &ulen1); |
1656 | else |
1657 | ulen1 = 1; |
701a277b |
1658 | if (u2) |
332ddc25 |
1659 | to_uni_fold(NATIVE_TO_UNI(cb), tmpbuf2, &ulen2); |
1660 | else |
1661 | ulen2 = 1; |
1662 | if (ulen1 != ulen2 |
1663 | || (ulen1 == 1 && PL_fold[ca] != PL_fold[cb]) |
1664 | || memNE((char *)tmpbuf1, (char *)tmpbuf2, ulen1)) |
1665 | return 1; /* mismatch */ |
701a277b |
1666 | } |
332ddc25 |
1667 | a += la; |
1668 | b += lb; |
d2cc3551 |
1669 | } |
332ddc25 |
1670 | return a == ae && b == be ? 0 : 1; /* 0 match, 1 mismatch */ |
e6b2e755 |
1671 | } |
701a277b |
1672 | |