Commit | Line | Data |
a0ed51b3 |
1 | /* utf8.c |
2 | * |
be3c0a43 |
3 | * Copyright (c) 1998-2002, 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 | |
ccfc67b7 |
27 | /* |
28 | =head1 Unicode Support |
a0ed51b3 |
29 | |
b851fbc1 |
30 | =for apidoc A|U8 *|uvuni_to_utf8_flags|U8 *d|UV uv|UV flags |
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 | |
b851fbc1 |
37 | d = uvuni_to_utf8_flags(d, uv, flags); |
38 | |
39 | or, in most cases, |
40 | |
9041c2e3 |
41 | d = uvuni_to_utf8(d, uv); |
eebe1485 |
42 | |
b851fbc1 |
43 | (which is equivalent to) |
44 | |
45 | d = uvuni_to_utf8_flags(d, uv, 0); |
46 | |
eebe1485 |
47 | is the recommended Unicode-aware way of saying |
48 | |
49 | *(d++) = uv; |
50 | |
51 | =cut |
52 | */ |
53 | |
dfe13c55 |
54 | U8 * |
b851fbc1 |
55 | Perl_uvuni_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags) |
a0ed51b3 |
56 | { |
62961d2e |
57 | if (ckWARN(WARN_UTF8)) { |
b851fbc1 |
58 | if (UNICODE_IS_SURROGATE(uv) && |
59 | !(flags & UNICODE_ALLOW_SURROGATE)) |
507b9800 |
60 | Perl_warner(aTHX_ WARN_UTF8, "UTF-16 surrogate 0x%04"UVxf, uv); |
b851fbc1 |
61 | else if ( |
62 | ((uv >= 0xFDD0 && uv <= 0xFDEF && |
63 | !(flags & UNICODE_ALLOW_FDD0)) |
64 | || |
65 | ((uv & 0xFFFF) == 0xFFFE && |
66 | !(flags & UNICODE_ALLOW_FFFE)) |
67 | || |
68 | ((uv & 0xFFFF) == 0xFFFF && |
69 | !(flags & UNICODE_ALLOW_FFFF))) && |
70 | /* UNICODE_ALLOW_SUPER includes |
71 | * FFFEs and FFFFs beyond 0x10FFFF. */ |
72 | ((uv <= PERL_UNICODE_MAX) || |
73 | !(flags & UNICODE_ALLOW_SUPER)) |
74 | ) |
507b9800 |
75 | Perl_warner(aTHX_ WARN_UTF8, |
76 | "Unicode character 0x%04"UVxf" is illegal", uv); |
77 | } |
c4d5f83a |
78 | if (UNI_IS_INVARIANT(uv)) { |
79 | *d++ = UTF_TO_NATIVE(uv); |
a0ed51b3 |
80 | return d; |
81 | } |
2d331972 |
82 | #if defined(EBCDIC) |
1d72bdf6 |
83 | else { |
84 | STRLEN len = UNISKIP(uv); |
85 | U8 *p = d+len-1; |
86 | while (p > d) { |
87 | *p-- = UTF_TO_NATIVE((uv & UTF_CONTINUATION_MASK) | UTF_CONTINUATION_MARK); |
88 | uv >>= UTF_ACCUMULATION_SHIFT; |
89 | } |
90 | *p = UTF_TO_NATIVE((uv & UTF_START_MASK(len)) | UTF_START_MARK(len)); |
91 | return d+len; |
92 | } |
93 | #else /* Non loop style */ |
a0ed51b3 |
94 | if (uv < 0x800) { |
95 | *d++ = (( uv >> 6) | 0xc0); |
96 | *d++ = (( uv & 0x3f) | 0x80); |
97 | return d; |
98 | } |
99 | if (uv < 0x10000) { |
100 | *d++ = (( uv >> 12) | 0xe0); |
101 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
102 | *d++ = (( uv & 0x3f) | 0x80); |
103 | return d; |
104 | } |
105 | if (uv < 0x200000) { |
106 | *d++ = (( uv >> 18) | 0xf0); |
107 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
108 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
109 | *d++ = (( uv & 0x3f) | 0x80); |
110 | return d; |
111 | } |
112 | if (uv < 0x4000000) { |
113 | *d++ = (( uv >> 24) | 0xf8); |
114 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
115 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
116 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
117 | *d++ = (( uv & 0x3f) | 0x80); |
118 | return d; |
119 | } |
120 | if (uv < 0x80000000) { |
121 | *d++ = (( uv >> 30) | 0xfc); |
122 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
123 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
124 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
125 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
126 | *d++ = (( uv & 0x3f) | 0x80); |
127 | return d; |
128 | } |
6b8eaf93 |
129 | #ifdef HAS_QUAD |
d7578b48 |
130 | if (uv < UTF8_QUAD_MAX) |
a0ed51b3 |
131 | #endif |
132 | { |
133 | *d++ = 0xfe; /* Can't match U+FEFF! */ |
134 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
135 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
136 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
137 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
138 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
139 | *d++ = (( uv & 0x3f) | 0x80); |
140 | return d; |
141 | } |
6b8eaf93 |
142 | #ifdef HAS_QUAD |
a0ed51b3 |
143 | { |
144 | *d++ = 0xff; /* Can't match U+FFFE! */ |
3c77ea2b |
145 | *d++ = 0x80; /* 6 Reserved bits */ |
146 | *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */ |
147 | *d++ = (((uv >> 54) & 0x3f) | 0x80); |
148 | *d++ = (((uv >> 48) & 0x3f) | 0x80); |
149 | *d++ = (((uv >> 42) & 0x3f) | 0x80); |
a0ed51b3 |
150 | *d++ = (((uv >> 36) & 0x3f) | 0x80); |
151 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
152 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
153 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
154 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
155 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
156 | *d++ = (( uv & 0x3f) | 0x80); |
157 | return d; |
158 | } |
159 | #endif |
1d72bdf6 |
160 | #endif /* Loop style */ |
a0ed51b3 |
161 | } |
b851fbc1 |
162 | |
163 | U8 * |
164 | Perl_uvuni_to_utf8(pTHX_ U8 *d, UV uv) |
165 | { |
166 | return Perl_uvuni_to_utf8_flags(aTHX_ d, uv, 0); |
167 | } |
9041c2e3 |
168 | |
169 | |
170 | /* |
eebe1485 |
171 | =for apidoc A|STRLEN|is_utf8_char|U8 *s |
172 | |
5da9da9e |
173 | Tests if some arbitrary number of bytes begins in a valid UTF-8 |
1d72bdf6 |
174 | character. Note that an INVARIANT (i.e. ASCII) character is a valid UTF-8 character. |
5da9da9e |
175 | The actual number of bytes in the UTF-8 character will be returned if |
176 | it is valid, otherwise 0. |
9041c2e3 |
177 | |
37607a96 |
178 | =cut |
179 | */ |
067a85ef |
180 | STRLEN |
386d01d6 |
181 | Perl_is_utf8_char(pTHX_ U8 *s) |
182 | { |
183 | U8 u = *s; |
067a85ef |
184 | STRLEN slen, len; |
185 | UV uv, ouv; |
386d01d6 |
186 | |
1d72bdf6 |
187 | if (UTF8_IS_INVARIANT(u)) |
386d01d6 |
188 | return 1; |
189 | |
60006e79 |
190 | if (!UTF8_IS_START(u)) |
386d01d6 |
191 | return 0; |
192 | |
9f07fdcd |
193 | len = UTF8SKIP(s); |
386d01d6 |
194 | |
60006e79 |
195 | if (len < 2 || !UTF8_IS_CONTINUATION(s[1])) |
067a85ef |
196 | return 0; |
197 | |
386d01d6 |
198 | slen = len - 1; |
199 | s++; |
6eb6869e |
200 | u &= UTF_START_MASK(len); |
1d72bdf6 |
201 | uv = u; |
067a85ef |
202 | ouv = uv; |
386d01d6 |
203 | while (slen--) { |
60006e79 |
204 | if (!UTF8_IS_CONTINUATION(*s)) |
386d01d6 |
205 | return 0; |
8850bf83 |
206 | uv = UTF8_ACCUMULATE(uv, *s); |
209a9bc1 |
207 | if (uv < ouv) |
067a85ef |
208 | return 0; |
209 | ouv = uv; |
386d01d6 |
210 | s++; |
211 | } |
067a85ef |
212 | |
5bbb0b5a |
213 | if (UNISKIP(uv) < len) |
067a85ef |
214 | return 0; |
215 | |
386d01d6 |
216 | return len; |
217 | } |
218 | |
6662521e |
219 | /* |
eebe1485 |
220 | =for apidoc A|bool|is_utf8_string|U8 *s|STRLEN len |
6662521e |
221 | |
5da9da9e |
222 | Returns true if first C<len> bytes of the given string form a valid UTF8 |
223 | string, false otherwise. Note that 'a valid UTF8 string' does not mean |
224 | 'a string that contains UTF8' because a valid ASCII string is a valid |
225 | UTF8 string. |
6662521e |
226 | |
227 | =cut |
228 | */ |
229 | |
8e84507e |
230 | bool |
6662521e |
231 | Perl_is_utf8_string(pTHX_ U8 *s, STRLEN len) |
232 | { |
067a85ef |
233 | U8* x = s; |
1aa99e6b |
234 | U8* send; |
067a85ef |
235 | STRLEN c; |
236 | |
1aa99e6b |
237 | if (!len) |
6cd5fe39 |
238 | len = strlen((char *)s); |
1aa99e6b |
239 | send = s + len; |
240 | |
6662521e |
241 | while (x < send) { |
242 | c = is_utf8_char(x); |
067a85ef |
243 | if (!c) |
244 | return FALSE; |
6662521e |
245 | x += c; |
6662521e |
246 | } |
60006e79 |
247 | if (x != send) |
248 | return FALSE; |
067a85ef |
249 | |
250 | return TRUE; |
6662521e |
251 | } |
252 | |
67e989fb |
253 | /* |
9041c2e3 |
254 | =for apidoc A|UV|utf8n_to_uvuni|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
67e989fb |
255 | |
9041c2e3 |
256 | Bottom level UTF-8 decode routine. |
257 | Returns the unicode code point value of the first character in the string C<s> |
ba210ebe |
258 | which is assumed to be in UTF8 encoding and no longer than C<curlen>; |
7df053ec |
259 | C<retlen> will be set to the length, in bytes, of that character. |
67e989fb |
260 | |
261 | If C<s> does not point to a well-formed UTF8 character, the behaviour |
dcad2880 |
262 | is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY, |
263 | it is assumed that the caller will raise a warning, and this function |
28d3d195 |
264 | will silently just set C<retlen> to C<-1> and return zero. If the |
265 | C<flags> does not contain UTF8_CHECK_ONLY, warnings about |
266 | malformations will be given, C<retlen> will be set to the expected |
267 | length of the UTF-8 character in bytes, and zero will be returned. |
268 | |
269 | The C<flags> can also contain various flags to allow deviations from |
270 | the strict UTF-8 encoding (see F<utf8.h>). |
67e989fb |
271 | |
9041c2e3 |
272 | Most code should use utf8_to_uvchr() rather than call this directly. |
273 | |
37607a96 |
274 | =cut |
275 | */ |
67e989fb |
276 | |
a0ed51b3 |
277 | UV |
37607a96 |
278 | Perl_utf8n_to_uvuni(pTHX_ U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
a0ed51b3 |
279 | { |
097fb8e2 |
280 | U8 *s0 = s; |
9c5ffd7c |
281 | UV uv = *s, ouv = 0; |
ba210ebe |
282 | STRLEN len = 1; |
283 | bool dowarn = ckWARN_d(WARN_UTF8); |
4f849cb6 |
284 | UV startbyte = *s; |
ba210ebe |
285 | STRLEN expectlen = 0; |
a0dbb045 |
286 | U32 warning = 0; |
287 | |
288 | /* This list is a superset of the UTF8_ALLOW_XXX. */ |
289 | |
290 | #define UTF8_WARN_EMPTY 1 |
291 | #define UTF8_WARN_CONTINUATION 2 |
292 | #define UTF8_WARN_NON_CONTINUATION 3 |
293 | #define UTF8_WARN_FE_FF 4 |
294 | #define UTF8_WARN_SHORT 5 |
295 | #define UTF8_WARN_OVERFLOW 6 |
296 | #define UTF8_WARN_SURROGATE 7 |
297 | #define UTF8_WARN_BOM 8 |
298 | #define UTF8_WARN_LONG 9 |
299 | #define UTF8_WARN_FFFF 10 |
300 | |
301 | if (curlen == 0 && |
302 | !(flags & UTF8_ALLOW_EMPTY)) { |
303 | warning = UTF8_WARN_EMPTY; |
0c443dc2 |
304 | goto malformed; |
305 | } |
306 | |
1d72bdf6 |
307 | if (UTF8_IS_INVARIANT(uv)) { |
a0ed51b3 |
308 | if (retlen) |
309 | *retlen = 1; |
c4d5f83a |
310 | return (UV) (NATIVE_TO_UTF(*s)); |
a0ed51b3 |
311 | } |
67e989fb |
312 | |
421a8bf2 |
313 | if (UTF8_IS_CONTINUATION(uv) && |
fcc8fcf6 |
314 | !(flags & UTF8_ALLOW_CONTINUATION)) { |
a0dbb045 |
315 | warning = UTF8_WARN_CONTINUATION; |
ba210ebe |
316 | goto malformed; |
317 | } |
318 | |
421a8bf2 |
319 | if (UTF8_IS_START(uv) && curlen > 1 && !UTF8_IS_CONTINUATION(s[1]) && |
fcc8fcf6 |
320 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
321 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
322 | goto malformed; |
323 | } |
9041c2e3 |
324 | |
1d72bdf6 |
325 | #ifdef EBCDIC |
75383841 |
326 | uv = NATIVE_TO_UTF(uv); |
1d72bdf6 |
327 | #else |
fcc8fcf6 |
328 | if ((uv == 0xfe || uv == 0xff) && |
329 | !(flags & UTF8_ALLOW_FE_FF)) { |
a0dbb045 |
330 | warning = UTF8_WARN_FE_FF; |
ba210ebe |
331 | goto malformed; |
a0ed51b3 |
332 | } |
1d72bdf6 |
333 | #endif |
334 | |
ba210ebe |
335 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
336 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } |
337 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } |
338 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } |
1d72bdf6 |
339 | #ifdef EBCDIC |
340 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
341 | else { len = 7; uv &= 0x01; } |
342 | #else |
ba210ebe |
343 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
344 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
1d72bdf6 |
345 | else { len = 13; uv = 0; } /* whoa! */ |
346 | #endif |
347 | |
a0ed51b3 |
348 | if (retlen) |
349 | *retlen = len; |
9041c2e3 |
350 | |
ba210ebe |
351 | expectlen = len; |
352 | |
fcc8fcf6 |
353 | if ((curlen < expectlen) && |
354 | !(flags & UTF8_ALLOW_SHORT)) { |
a0dbb045 |
355 | warning = UTF8_WARN_SHORT; |
ba210ebe |
356 | goto malformed; |
357 | } |
358 | |
359 | len--; |
a0ed51b3 |
360 | s++; |
ba210ebe |
361 | ouv = uv; |
362 | |
a0ed51b3 |
363 | while (len--) { |
421a8bf2 |
364 | if (!UTF8_IS_CONTINUATION(*s) && |
365 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
366 | s--; |
367 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
368 | goto malformed; |
a0ed51b3 |
369 | } |
370 | else |
8850bf83 |
371 | uv = UTF8_ACCUMULATE(uv, *s); |
a0dbb045 |
372 | if (!(uv > ouv)) { |
373 | /* These cannot be allowed. */ |
374 | if (uv == ouv) { |
375 | if (!(flags & UTF8_ALLOW_LONG)) { |
376 | warning = UTF8_WARN_LONG; |
377 | goto malformed; |
378 | } |
379 | } |
380 | else { /* uv < ouv */ |
381 | /* This cannot be allowed. */ |
382 | warning = UTF8_WARN_OVERFLOW; |
383 | goto malformed; |
384 | } |
ba210ebe |
385 | } |
386 | s++; |
387 | ouv = uv; |
388 | } |
389 | |
421a8bf2 |
390 | if (UNICODE_IS_SURROGATE(uv) && |
fcc8fcf6 |
391 | !(flags & UTF8_ALLOW_SURROGATE)) { |
a0dbb045 |
392 | warning = UTF8_WARN_SURROGATE; |
ba210ebe |
393 | goto malformed; |
421a8bf2 |
394 | } else if (UNICODE_IS_BYTE_ORDER_MARK(uv) && |
fcc8fcf6 |
395 | !(flags & UTF8_ALLOW_BOM)) { |
a0dbb045 |
396 | warning = UTF8_WARN_BOM; |
ba210ebe |
397 | goto malformed; |
fcc8fcf6 |
398 | } else if ((expectlen > UNISKIP(uv)) && |
399 | !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 |
400 | warning = UTF8_WARN_LONG; |
ba210ebe |
401 | goto malformed; |
421a8bf2 |
402 | } else if (UNICODE_IS_ILLEGAL(uv) && |
a9917092 |
403 | !(flags & UTF8_ALLOW_FFFF)) { |
a0dbb045 |
404 | warning = UTF8_WARN_FFFF; |
a9917092 |
405 | goto malformed; |
a0ed51b3 |
406 | } |
ba210ebe |
407 | |
a0ed51b3 |
408 | return uv; |
ba210ebe |
409 | |
410 | malformed: |
411 | |
fcc8fcf6 |
412 | if (flags & UTF8_CHECK_ONLY) { |
ba210ebe |
413 | if (retlen) |
cc366d4b |
414 | *retlen = -1; |
ba210ebe |
415 | return 0; |
416 | } |
417 | |
a0dbb045 |
418 | if (dowarn) { |
419 | SV* sv = sv_2mortal(newSVpv("Malformed UTF-8 character ", 0)); |
420 | |
421 | switch (warning) { |
422 | case 0: /* Intentionally empty. */ break; |
423 | case UTF8_WARN_EMPTY: |
424 | Perl_sv_catpvf(aTHX_ sv, "(empty string)"); |
425 | break; |
426 | case UTF8_WARN_CONTINUATION: |
097fb8e2 |
427 | Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf", with no preceding start byte)", uv); |
a0dbb045 |
428 | break; |
429 | case UTF8_WARN_NON_CONTINUATION: |
097fb8e2 |
430 | if (s == s0) |
431 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", immediately after start byte 0x%02"UVxf")", |
432 | (UV)s[1], startbyte); |
433 | else |
434 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", %d byte%s after start byte 0x%02"UVxf", expected %d bytes)", |
435 | (UV)s[1], s - s0, s - s0 > 1 ? "s" : "", startbyte, expectlen); |
436 | |
a0dbb045 |
437 | break; |
438 | case UTF8_WARN_FE_FF: |
439 | Perl_sv_catpvf(aTHX_ sv, "(byte 0x%02"UVxf")", uv); |
440 | break; |
441 | case UTF8_WARN_SHORT: |
097fb8e2 |
442 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
443 | curlen, curlen == 1 ? "" : "s", expectlen, startbyte); |
b31f83c2 |
444 | expectlen = curlen; /* distance for caller to skip */ |
a0dbb045 |
445 | break; |
446 | case UTF8_WARN_OVERFLOW: |
097fb8e2 |
447 | Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x, after start byte 0x%02"UVxf")", |
448 | ouv, *s, startbyte); |
a0dbb045 |
449 | break; |
450 | case UTF8_WARN_SURROGATE: |
451 | Perl_sv_catpvf(aTHX_ sv, "(UTF-16 surrogate 0x%04"UVxf")", uv); |
452 | break; |
453 | case UTF8_WARN_BOM: |
454 | Perl_sv_catpvf(aTHX_ sv, "(byte order mark 0x%04"UVxf")", uv); |
455 | break; |
456 | case UTF8_WARN_LONG: |
097fb8e2 |
457 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
458 | expectlen, expectlen == 1 ? "": "s", UNISKIP(uv), startbyte); |
a0dbb045 |
459 | break; |
460 | case UTF8_WARN_FFFF: |
461 | Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv); |
462 | break; |
463 | default: |
464 | Perl_sv_catpvf(aTHX_ sv, "(unknown reason)"); |
465 | break; |
466 | } |
467 | |
468 | if (warning) { |
469 | char *s = SvPVX(sv); |
470 | |
471 | if (PL_op) |
472 | Perl_warner(aTHX_ WARN_UTF8, |
53e06cf0 |
473 | "%s in %s", s, OP_DESC(PL_op)); |
a0dbb045 |
474 | else |
475 | Perl_warner(aTHX_ WARN_UTF8, "%s", s); |
476 | } |
477 | } |
478 | |
ba210ebe |
479 | if (retlen) |
28d3d195 |
480 | *retlen = expectlen ? expectlen : len; |
ba210ebe |
481 | |
28d3d195 |
482 | return 0; |
a0ed51b3 |
483 | } |
484 | |
8e84507e |
485 | /* |
37607a96 |
486 | =for apidoc A|UV|utf8_to_uvchr|U8 *s|STRLEN *retlen |
9041c2e3 |
487 | |
488 | Returns the native character value of the first character in the string C<s> |
489 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
490 | length, in bytes, of that character. |
491 | |
492 | If C<s> does not point to a well-formed UTF8 character, zero is |
493 | returned and retlen is set, if possible, to -1. |
494 | |
495 | =cut |
496 | */ |
497 | |
498 | UV |
37607a96 |
499 | Perl_utf8_to_uvchr(pTHX_ U8 *s, STRLEN *retlen) |
9041c2e3 |
500 | { |
501 | return Perl_utf8n_to_uvchr(aTHX_ s, UTF8_MAXLEN, retlen, 0); |
502 | } |
503 | |
504 | /* |
37607a96 |
505 | =for apidoc A|UV|utf8_to_uvuni|U8 *s|STRLEN *retlen |
9041c2e3 |
506 | |
507 | Returns the Unicode code point of the first character in the string C<s> |
508 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
509 | length, in bytes, of that character. |
510 | |
511 | This function should only be used when returned UV is considered |
512 | an index into the Unicode semantic tables (e.g. swashes). |
513 | |
ba210ebe |
514 | If C<s> does not point to a well-formed UTF8 character, zero is |
515 | returned and retlen is set, if possible, to -1. |
8e84507e |
516 | |
517 | =cut |
518 | */ |
519 | |
520 | UV |
37607a96 |
521 | Perl_utf8_to_uvuni(pTHX_ U8 *s, STRLEN *retlen) |
8e84507e |
522 | { |
9041c2e3 |
523 | /* Call the low level routine asking for checks */ |
524 | return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXLEN, retlen, 0); |
8e84507e |
525 | } |
526 | |
b76347f2 |
527 | /* |
37607a96 |
528 | =for apidoc A|STRLEN|utf8_length|U8 *s|U8 *e |
b76347f2 |
529 | |
530 | Return the length of the UTF-8 char encoded string C<s> in characters. |
02eb7b47 |
531 | Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end |
532 | up past C<e>, croaks. |
b76347f2 |
533 | |
534 | =cut |
535 | */ |
536 | |
537 | STRLEN |
37607a96 |
538 | Perl_utf8_length(pTHX_ U8 *s, U8 *e) |
b76347f2 |
539 | { |
540 | STRLEN len = 0; |
541 | |
8850bf83 |
542 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
543 | * the bitops (especially ~) can create illegal UTF-8. |
544 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
545 | |
b76347f2 |
546 | if (e < s) |
02eb7b47 |
547 | Perl_croak(aTHX_ "panic: utf8_length: unexpected end"); |
b76347f2 |
548 | while (s < e) { |
02eb7b47 |
549 | U8 t = UTF8SKIP(s); |
b76347f2 |
550 | |
551 | if (e - s < t) |
0064a8a9 |
552 | Perl_croak(aTHX_ "panic: utf8_length: unaligned end"); |
b76347f2 |
553 | s += t; |
554 | len++; |
555 | } |
556 | |
557 | return len; |
558 | } |
559 | |
b06226ff |
560 | /* |
eebe1485 |
561 | =for apidoc A|IV|utf8_distance|U8 *a|U8 *b |
b06226ff |
562 | |
563 | Returns the number of UTF8 characters between the UTF-8 pointers C<a> |
564 | and C<b>. |
565 | |
566 | WARNING: use only if you *know* that the pointers point inside the |
567 | same UTF-8 buffer. |
568 | |
37607a96 |
569 | =cut |
570 | */ |
a0ed51b3 |
571 | |
02eb7b47 |
572 | IV |
864dbfa3 |
573 | Perl_utf8_distance(pTHX_ U8 *a, U8 *b) |
a0ed51b3 |
574 | { |
02eb7b47 |
575 | IV off = 0; |
576 | |
8850bf83 |
577 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
578 | * the bitops (especially ~) can create illegal UTF-8. |
579 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
580 | |
a0ed51b3 |
581 | if (a < b) { |
582 | while (a < b) { |
02eb7b47 |
583 | U8 c = UTF8SKIP(a); |
584 | |
585 | if (b - a < c) |
586 | Perl_croak(aTHX_ "panic: utf8_distance: unaligned end"); |
587 | a += c; |
a0ed51b3 |
588 | off--; |
589 | } |
590 | } |
591 | else { |
592 | while (b < a) { |
02eb7b47 |
593 | U8 c = UTF8SKIP(b); |
594 | |
595 | if (a - b < c) |
596 | Perl_croak(aTHX_ "panic: utf8_distance: unaligned end"); |
597 | b += c; |
a0ed51b3 |
598 | off++; |
599 | } |
600 | } |
02eb7b47 |
601 | |
a0ed51b3 |
602 | return off; |
603 | } |
604 | |
b06226ff |
605 | /* |
37607a96 |
606 | =for apidoc A|U8 *|utf8_hop|U8 *s|I32 off |
b06226ff |
607 | |
8850bf83 |
608 | Return the UTF-8 pointer C<s> displaced by C<off> characters, either |
609 | forward or backward. |
b06226ff |
610 | |
611 | WARNING: do not use the following unless you *know* C<off> is within |
8850bf83 |
612 | the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned |
613 | on the first byte of character or just after the last byte of a character. |
b06226ff |
614 | |
37607a96 |
615 | =cut |
616 | */ |
a0ed51b3 |
617 | |
618 | U8 * |
864dbfa3 |
619 | Perl_utf8_hop(pTHX_ U8 *s, I32 off) |
a0ed51b3 |
620 | { |
8850bf83 |
621 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g |
622 | * the bitops (especially ~) can create illegal UTF-8. |
623 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
624 | |
a0ed51b3 |
625 | if (off >= 0) { |
626 | while (off--) |
627 | s += UTF8SKIP(s); |
628 | } |
629 | else { |
630 | while (off++) { |
631 | s--; |
8850bf83 |
632 | while (UTF8_IS_CONTINUATION(*s)) |
633 | s--; |
a0ed51b3 |
634 | } |
635 | } |
636 | return s; |
637 | } |
638 | |
6940069f |
639 | /* |
eebe1485 |
640 | =for apidoc A|U8 *|utf8_to_bytes|U8 *s|STRLEN *len |
6940069f |
641 | |
246fae53 |
642 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
643 | Unlike C<bytes_to_utf8>, this over-writes the original string, and |
644 | updates len to contain the new length. |
67e989fb |
645 | Returns zero on failure, setting C<len> to -1. |
6940069f |
646 | |
647 | =cut |
648 | */ |
649 | |
650 | U8 * |
37607a96 |
651 | Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len) |
6940069f |
652 | { |
6940069f |
653 | U8 *send; |
654 | U8 *d; |
dcad2880 |
655 | U8 *save = s; |
246fae53 |
656 | |
657 | /* ensure valid UTF8 and chars < 256 before updating string */ |
dcad2880 |
658 | for (send = s + *len; s < send; ) { |
659 | U8 c = *s++; |
660 | |
1d72bdf6 |
661 | if (!UTF8_IS_INVARIANT(c) && |
662 | (!UTF8_IS_DOWNGRADEABLE_START(c) || (s >= send) |
663 | || !(c = *s++) || !UTF8_IS_CONTINUATION(c))) { |
dcad2880 |
664 | *len = -1; |
665 | return 0; |
666 | } |
246fae53 |
667 | } |
dcad2880 |
668 | |
669 | d = s = save; |
6940069f |
670 | while (s < send) { |
ed646e6e |
671 | STRLEN ulen; |
9041c2e3 |
672 | *d++ = (U8)utf8_to_uvchr(s, &ulen); |
ed646e6e |
673 | s += ulen; |
6940069f |
674 | } |
675 | *d = '\0'; |
246fae53 |
676 | *len = d - save; |
6940069f |
677 | return save; |
678 | } |
679 | |
680 | /* |
f9a63242 |
681 | =for apidoc A|U8 *|bytes_from_utf8|U8 *s|STRLEN *len|bool *is_utf8 |
682 | |
683 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
684 | Unlike <utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to |
ef9edfd0 |
685 | the newly-created string, and updates C<len> to contain the new |
686 | length. Returns the original string if no conversion occurs, C<len> |
687 | is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to |
688 | 0 if C<s> is converted or contains all 7bit characters. |
f9a63242 |
689 | |
37607a96 |
690 | =cut |
691 | */ |
f9a63242 |
692 | |
693 | U8 * |
37607a96 |
694 | Perl_bytes_from_utf8(pTHX_ U8 *s, STRLEN *len, bool *is_utf8) |
f9a63242 |
695 | { |
f9a63242 |
696 | U8 *d; |
697 | U8 *start = s; |
db42d148 |
698 | U8 *send; |
f9a63242 |
699 | I32 count = 0; |
700 | |
701 | if (!*is_utf8) |
702 | return start; |
703 | |
ef9edfd0 |
704 | /* ensure valid UTF8 and chars < 256 before converting string */ |
f9a63242 |
705 | for (send = s + *len; s < send;) { |
706 | U8 c = *s++; |
1d72bdf6 |
707 | if (!UTF8_IS_INVARIANT(c)) { |
db42d148 |
708 | if (UTF8_IS_DOWNGRADEABLE_START(c) && s < send && |
709 | (c = *s++) && UTF8_IS_CONTINUATION(c)) |
710 | count++; |
711 | else |
f9a63242 |
712 | return start; |
db42d148 |
713 | } |
f9a63242 |
714 | } |
715 | |
716 | *is_utf8 = 0; |
717 | |
f9a63242 |
718 | Newz(801, d, (*len) - count + 1, U8); |
ef9edfd0 |
719 | s = start; start = d; |
f9a63242 |
720 | while (s < send) { |
721 | U8 c = *s++; |
c4d5f83a |
722 | if (!UTF8_IS_INVARIANT(c)) { |
723 | /* Then it is two-byte encoded */ |
724 | c = UTF8_ACCUMULATE(NATIVE_TO_UTF(c), *s++); |
725 | c = ASCII_TO_NATIVE(c); |
726 | } |
727 | *d++ = c; |
f9a63242 |
728 | } |
729 | *d = '\0'; |
730 | *len = d - start; |
731 | return start; |
732 | } |
733 | |
734 | /* |
eebe1485 |
735 | =for apidoc A|U8 *|bytes_to_utf8|U8 *s|STRLEN *len |
6940069f |
736 | |
737 | Converts a string C<s> of length C<len> from ASCII into UTF8 encoding. |
6662521e |
738 | Returns a pointer to the newly-created string, and sets C<len> to |
739 | reflect the new length. |
6940069f |
740 | |
497711e7 |
741 | =cut |
6940069f |
742 | */ |
743 | |
744 | U8* |
37607a96 |
745 | Perl_bytes_to_utf8(pTHX_ U8 *s, STRLEN *len) |
6940069f |
746 | { |
6940069f |
747 | U8 *send; |
748 | U8 *d; |
749 | U8 *dst; |
6662521e |
750 | send = s + (*len); |
6940069f |
751 | |
6662521e |
752 | Newz(801, d, (*len) * 2 + 1, U8); |
6940069f |
753 | dst = d; |
754 | |
755 | while (s < send) { |
db42d148 |
756 | UV uv = NATIVE_TO_ASCII(*s++); |
c4d5f83a |
757 | if (UNI_IS_INVARIANT(uv)) |
758 | *d++ = UTF_TO_NATIVE(uv); |
6940069f |
759 | else { |
90f44359 |
760 | *d++ = UTF8_EIGHT_BIT_HI(uv); |
761 | *d++ = UTF8_EIGHT_BIT_LO(uv); |
6940069f |
762 | } |
763 | } |
764 | *d = '\0'; |
6662521e |
765 | *len = d-dst; |
6940069f |
766 | return dst; |
767 | } |
768 | |
a0ed51b3 |
769 | /* |
dea0fc0b |
770 | * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8. |
a0ed51b3 |
771 | * |
772 | * Destination must be pre-extended to 3/2 source. Do not use in-place. |
773 | * We optimize for native, for obvious reasons. */ |
774 | |
775 | U8* |
dea0fc0b |
776 | Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
777 | { |
dea0fc0b |
778 | U8* pend; |
779 | U8* dstart = d; |
780 | |
781 | if (bytelen & 1) |
a7867d0a |
782 | Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen"); |
dea0fc0b |
783 | |
784 | pend = p + bytelen; |
785 | |
a0ed51b3 |
786 | while (p < pend) { |
dea0fc0b |
787 | UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */ |
788 | p += 2; |
a0ed51b3 |
789 | if (uv < 0x80) { |
790 | *d++ = uv; |
791 | continue; |
792 | } |
793 | if (uv < 0x800) { |
794 | *d++ = (( uv >> 6) | 0xc0); |
795 | *d++ = (( uv & 0x3f) | 0x80); |
796 | continue; |
797 | } |
798 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ |
dea0fc0b |
799 | UV low = *p++; |
800 | if (low < 0xdc00 || low >= 0xdfff) |
801 | Perl_croak(aTHX_ "Malformed UTF-16 surrogate"); |
a0ed51b3 |
802 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
803 | } |
804 | if (uv < 0x10000) { |
805 | *d++ = (( uv >> 12) | 0xe0); |
806 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
807 | *d++ = (( uv & 0x3f) | 0x80); |
808 | continue; |
809 | } |
810 | else { |
811 | *d++ = (( uv >> 18) | 0xf0); |
812 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
813 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
814 | *d++ = (( uv & 0x3f) | 0x80); |
815 | continue; |
816 | } |
817 | } |
dea0fc0b |
818 | *newlen = d - dstart; |
a0ed51b3 |
819 | return d; |
820 | } |
821 | |
822 | /* Note: this one is slightly destructive of the source. */ |
823 | |
824 | U8* |
dea0fc0b |
825 | Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
826 | { |
827 | U8* s = (U8*)p; |
828 | U8* send = s + bytelen; |
829 | while (s < send) { |
830 | U8 tmp = s[0]; |
831 | s[0] = s[1]; |
832 | s[1] = tmp; |
833 | s += 2; |
834 | } |
dea0fc0b |
835 | return utf16_to_utf8(p, d, bytelen, newlen); |
a0ed51b3 |
836 | } |
837 | |
838 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ |
839 | |
840 | bool |
84afefe6 |
841 | Perl_is_uni_alnum(pTHX_ UV c) |
a0ed51b3 |
842 | { |
ad391ad9 |
843 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
844 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
845 | return is_utf8_alnum(tmpbuf); |
846 | } |
847 | |
848 | bool |
84afefe6 |
849 | Perl_is_uni_alnumc(pTHX_ UV c) |
b8c5462f |
850 | { |
ad391ad9 |
851 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
852 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
853 | return is_utf8_alnumc(tmpbuf); |
854 | } |
855 | |
856 | bool |
84afefe6 |
857 | Perl_is_uni_idfirst(pTHX_ UV c) |
a0ed51b3 |
858 | { |
ad391ad9 |
859 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
860 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
861 | return is_utf8_idfirst(tmpbuf); |
862 | } |
863 | |
864 | bool |
84afefe6 |
865 | Perl_is_uni_alpha(pTHX_ UV c) |
a0ed51b3 |
866 | { |
ad391ad9 |
867 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
868 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
869 | return is_utf8_alpha(tmpbuf); |
870 | } |
871 | |
872 | bool |
84afefe6 |
873 | Perl_is_uni_ascii(pTHX_ UV c) |
4d61ec05 |
874 | { |
ad391ad9 |
875 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
876 | uvchr_to_utf8(tmpbuf, (UV)c); |
4d61ec05 |
877 | return is_utf8_ascii(tmpbuf); |
878 | } |
879 | |
880 | bool |
84afefe6 |
881 | Perl_is_uni_space(pTHX_ UV c) |
a0ed51b3 |
882 | { |
ad391ad9 |
883 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
884 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
885 | return is_utf8_space(tmpbuf); |
886 | } |
887 | |
888 | bool |
84afefe6 |
889 | Perl_is_uni_digit(pTHX_ UV c) |
a0ed51b3 |
890 | { |
ad391ad9 |
891 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
892 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
893 | return is_utf8_digit(tmpbuf); |
894 | } |
895 | |
896 | bool |
84afefe6 |
897 | Perl_is_uni_upper(pTHX_ UV c) |
a0ed51b3 |
898 | { |
ad391ad9 |
899 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
900 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
901 | return is_utf8_upper(tmpbuf); |
902 | } |
903 | |
904 | bool |
84afefe6 |
905 | Perl_is_uni_lower(pTHX_ UV c) |
a0ed51b3 |
906 | { |
ad391ad9 |
907 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
908 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
909 | return is_utf8_lower(tmpbuf); |
910 | } |
911 | |
912 | bool |
84afefe6 |
913 | Perl_is_uni_cntrl(pTHX_ UV c) |
b8c5462f |
914 | { |
ad391ad9 |
915 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
916 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
917 | return is_utf8_cntrl(tmpbuf); |
918 | } |
919 | |
920 | bool |
84afefe6 |
921 | Perl_is_uni_graph(pTHX_ UV c) |
b8c5462f |
922 | { |
ad391ad9 |
923 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
924 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
925 | return is_utf8_graph(tmpbuf); |
926 | } |
927 | |
928 | bool |
84afefe6 |
929 | Perl_is_uni_print(pTHX_ UV c) |
a0ed51b3 |
930 | { |
ad391ad9 |
931 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
932 | uvchr_to_utf8(tmpbuf, (UV)c); |
a0ed51b3 |
933 | return is_utf8_print(tmpbuf); |
934 | } |
935 | |
b8c5462f |
936 | bool |
84afefe6 |
937 | Perl_is_uni_punct(pTHX_ UV c) |
b8c5462f |
938 | { |
ad391ad9 |
939 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 |
940 | uvchr_to_utf8(tmpbuf, (UV)c); |
b8c5462f |
941 | return is_utf8_punct(tmpbuf); |
942 | } |
943 | |
4d61ec05 |
944 | bool |
84afefe6 |
945 | Perl_is_uni_xdigit(pTHX_ UV c) |
4d61ec05 |
946 | { |
e7ae6809 |
947 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
948 | uvchr_to_utf8(tmpbuf, (UV)c); |
4d61ec05 |
949 | return is_utf8_xdigit(tmpbuf); |
950 | } |
951 | |
84afefe6 |
952 | UV |
953 | Perl_to_uni_upper(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
954 | { |
e7ae6809 |
955 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
956 | uvchr_to_utf8(tmpbuf, (UV)c); |
a2a2844f |
957 | return to_utf8_upper(tmpbuf, p, lenp); |
a0ed51b3 |
958 | } |
959 | |
84afefe6 |
960 | UV |
961 | Perl_to_uni_title(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
962 | { |
e7ae6809 |
963 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
964 | uvchr_to_utf8(tmpbuf, (UV)c); |
a2a2844f |
965 | return to_utf8_title(tmpbuf, p, lenp); |
a0ed51b3 |
966 | } |
967 | |
84afefe6 |
968 | UV |
969 | Perl_to_uni_lower(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
970 | { |
d90824e8 |
971 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
2b9d42f0 |
972 | uvchr_to_utf8(tmpbuf, (UV)c); |
a2a2844f |
973 | return to_utf8_lower(tmpbuf, p, lenp); |
a0ed51b3 |
974 | } |
975 | |
84afefe6 |
976 | UV |
977 | Perl_to_uni_fold(pTHX_ UV c, U8* p, STRLEN *lenp) |
978 | { |
d90824e8 |
979 | U8 tmpbuf[UTF8_MAXLEN_FOLD+1]; |
84afefe6 |
980 | uvchr_to_utf8(tmpbuf, (UV)c); |
981 | return to_utf8_fold(tmpbuf, p, lenp); |
982 | } |
983 | |
a0ed51b3 |
984 | /* for now these all assume no locale info available for Unicode > 255 */ |
985 | |
986 | bool |
84afefe6 |
987 | Perl_is_uni_alnum_lc(pTHX_ UV c) |
a0ed51b3 |
988 | { |
989 | return is_uni_alnum(c); /* XXX no locale support yet */ |
990 | } |
991 | |
992 | bool |
84afefe6 |
993 | Perl_is_uni_alnumc_lc(pTHX_ UV c) |
b8c5462f |
994 | { |
995 | return is_uni_alnumc(c); /* XXX no locale support yet */ |
996 | } |
997 | |
998 | bool |
84afefe6 |
999 | Perl_is_uni_idfirst_lc(pTHX_ UV c) |
a0ed51b3 |
1000 | { |
1001 | return is_uni_idfirst(c); /* XXX no locale support yet */ |
1002 | } |
1003 | |
1004 | bool |
84afefe6 |
1005 | Perl_is_uni_alpha_lc(pTHX_ UV c) |
a0ed51b3 |
1006 | { |
1007 | return is_uni_alpha(c); /* XXX no locale support yet */ |
1008 | } |
1009 | |
1010 | bool |
84afefe6 |
1011 | Perl_is_uni_ascii_lc(pTHX_ UV c) |
4d61ec05 |
1012 | { |
1013 | return is_uni_ascii(c); /* XXX no locale support yet */ |
1014 | } |
1015 | |
1016 | bool |
84afefe6 |
1017 | Perl_is_uni_space_lc(pTHX_ UV c) |
a0ed51b3 |
1018 | { |
1019 | return is_uni_space(c); /* XXX no locale support yet */ |
1020 | } |
1021 | |
1022 | bool |
84afefe6 |
1023 | Perl_is_uni_digit_lc(pTHX_ UV c) |
a0ed51b3 |
1024 | { |
1025 | return is_uni_digit(c); /* XXX no locale support yet */ |
1026 | } |
1027 | |
1028 | bool |
84afefe6 |
1029 | Perl_is_uni_upper_lc(pTHX_ UV c) |
a0ed51b3 |
1030 | { |
1031 | return is_uni_upper(c); /* XXX no locale support yet */ |
1032 | } |
1033 | |
1034 | bool |
84afefe6 |
1035 | Perl_is_uni_lower_lc(pTHX_ UV c) |
a0ed51b3 |
1036 | { |
1037 | return is_uni_lower(c); /* XXX no locale support yet */ |
1038 | } |
1039 | |
1040 | bool |
84afefe6 |
1041 | Perl_is_uni_cntrl_lc(pTHX_ UV c) |
b8c5462f |
1042 | { |
1043 | return is_uni_cntrl(c); /* XXX no locale support yet */ |
1044 | } |
1045 | |
1046 | bool |
84afefe6 |
1047 | Perl_is_uni_graph_lc(pTHX_ UV c) |
b8c5462f |
1048 | { |
1049 | return is_uni_graph(c); /* XXX no locale support yet */ |
1050 | } |
1051 | |
1052 | bool |
84afefe6 |
1053 | Perl_is_uni_print_lc(pTHX_ UV c) |
a0ed51b3 |
1054 | { |
1055 | return is_uni_print(c); /* XXX no locale support yet */ |
1056 | } |
1057 | |
b8c5462f |
1058 | bool |
84afefe6 |
1059 | Perl_is_uni_punct_lc(pTHX_ UV c) |
b8c5462f |
1060 | { |
1061 | return is_uni_punct(c); /* XXX no locale support yet */ |
1062 | } |
1063 | |
4d61ec05 |
1064 | bool |
84afefe6 |
1065 | Perl_is_uni_xdigit_lc(pTHX_ UV c) |
4d61ec05 |
1066 | { |
1067 | return is_uni_xdigit(c); /* XXX no locale support yet */ |
1068 | } |
1069 | |
b7ac61fa |
1070 | U32 |
1071 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
1072 | { |
ee099d14 |
1073 | /* XXX returns only the first character -- do not use XXX */ |
1074 | /* XXX no locale support yet */ |
1075 | STRLEN len; |
1076 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
1077 | return (U32)to_uni_upper(c, tmpbuf, &len); |
b7ac61fa |
1078 | } |
1079 | |
1080 | U32 |
1081 | Perl_to_uni_title_lc(pTHX_ U32 c) |
1082 | { |
ee099d14 |
1083 | /* XXX returns only the first character XXX -- do not use XXX */ |
1084 | /* XXX no locale support yet */ |
1085 | STRLEN len; |
1086 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
1087 | return (U32)to_uni_title(c, tmpbuf, &len); |
b7ac61fa |
1088 | } |
1089 | |
1090 | U32 |
1091 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
1092 | { |
ee099d14 |
1093 | /* XXX returns only the first character -- do not use XXX */ |
1094 | /* XXX no locale support yet */ |
1095 | STRLEN len; |
1096 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
1097 | return (U32)to_uni_lower(c, tmpbuf, &len); |
b7ac61fa |
1098 | } |
1099 | |
a0ed51b3 |
1100 | bool |
864dbfa3 |
1101 | Perl_is_utf8_alnum(pTHX_ U8 *p) |
a0ed51b3 |
1102 | { |
386d01d6 |
1103 | if (!is_utf8_char(p)) |
1104 | return FALSE; |
a0ed51b3 |
1105 | if (!PL_utf8_alnum) |
289d4f09 |
1106 | /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true |
1107 | * descendant of isalnum(3), in other words, it doesn't |
1108 | * contain the '_'. --jhi */ |
1109 | PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0); |
3568d838 |
1110 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
a0ed51b3 |
1111 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ |
1112 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1113 | if (!PL_utf8_alnum) |
1114 | PL_utf8_alnum = swash_init("utf8", "", |
1115 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
3568d838 |
1116 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
a0ed51b3 |
1117 | #endif |
1118 | } |
1119 | |
1120 | bool |
b8c5462f |
1121 | Perl_is_utf8_alnumc(pTHX_ U8 *p) |
1122 | { |
386d01d6 |
1123 | if (!is_utf8_char(p)) |
1124 | return FALSE; |
b8c5462f |
1125 | if (!PL_utf8_alnum) |
1126 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); |
3568d838 |
1127 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
b8c5462f |
1128 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ |
1129 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1130 | if (!PL_utf8_alnum) |
1131 | PL_utf8_alnum = swash_init("utf8", "", |
1132 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
3568d838 |
1133 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
b8c5462f |
1134 | #endif |
1135 | } |
1136 | |
1137 | bool |
864dbfa3 |
1138 | Perl_is_utf8_idfirst(pTHX_ U8 *p) |
a0ed51b3 |
1139 | { |
1140 | return *p == '_' || is_utf8_alpha(p); |
1141 | } |
1142 | |
1143 | bool |
864dbfa3 |
1144 | Perl_is_utf8_alpha(pTHX_ U8 *p) |
a0ed51b3 |
1145 | { |
386d01d6 |
1146 | if (!is_utf8_char(p)) |
1147 | return FALSE; |
a0ed51b3 |
1148 | if (!PL_utf8_alpha) |
e24b16f9 |
1149 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
3568d838 |
1150 | return swash_fetch(PL_utf8_alpha, p, TRUE); |
a0ed51b3 |
1151 | } |
1152 | |
1153 | bool |
b8c5462f |
1154 | Perl_is_utf8_ascii(pTHX_ U8 *p) |
1155 | { |
386d01d6 |
1156 | if (!is_utf8_char(p)) |
1157 | return FALSE; |
b8c5462f |
1158 | if (!PL_utf8_ascii) |
1159 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); |
3568d838 |
1160 | return swash_fetch(PL_utf8_ascii, p, TRUE); |
b8c5462f |
1161 | } |
1162 | |
1163 | bool |
864dbfa3 |
1164 | Perl_is_utf8_space(pTHX_ U8 *p) |
a0ed51b3 |
1165 | { |
386d01d6 |
1166 | if (!is_utf8_char(p)) |
1167 | return FALSE; |
a0ed51b3 |
1168 | if (!PL_utf8_space) |
3bec3564 |
1169 | PL_utf8_space = swash_init("utf8", "IsSpacePerl", &PL_sv_undef, 0, 0); |
3568d838 |
1170 | return swash_fetch(PL_utf8_space, p, TRUE); |
a0ed51b3 |
1171 | } |
1172 | |
1173 | bool |
864dbfa3 |
1174 | Perl_is_utf8_digit(pTHX_ U8 *p) |
a0ed51b3 |
1175 | { |
386d01d6 |
1176 | if (!is_utf8_char(p)) |
1177 | return FALSE; |
a0ed51b3 |
1178 | if (!PL_utf8_digit) |
e24b16f9 |
1179 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
3568d838 |
1180 | return swash_fetch(PL_utf8_digit, p, TRUE); |
a0ed51b3 |
1181 | } |
1182 | |
1183 | bool |
864dbfa3 |
1184 | Perl_is_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 |
1185 | { |
386d01d6 |
1186 | if (!is_utf8_char(p)) |
1187 | return FALSE; |
a0ed51b3 |
1188 | if (!PL_utf8_upper) |
e24b16f9 |
1189 | PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0); |
3568d838 |
1190 | return swash_fetch(PL_utf8_upper, p, TRUE); |
a0ed51b3 |
1191 | } |
1192 | |
1193 | bool |
864dbfa3 |
1194 | Perl_is_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 |
1195 | { |
386d01d6 |
1196 | if (!is_utf8_char(p)) |
1197 | return FALSE; |
a0ed51b3 |
1198 | if (!PL_utf8_lower) |
e24b16f9 |
1199 | PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0); |
3568d838 |
1200 | return swash_fetch(PL_utf8_lower, p, TRUE); |
a0ed51b3 |
1201 | } |
1202 | |
1203 | bool |
b8c5462f |
1204 | Perl_is_utf8_cntrl(pTHX_ U8 *p) |
1205 | { |
386d01d6 |
1206 | if (!is_utf8_char(p)) |
1207 | return FALSE; |
b8c5462f |
1208 | if (!PL_utf8_cntrl) |
1209 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); |
3568d838 |
1210 | return swash_fetch(PL_utf8_cntrl, p, TRUE); |
b8c5462f |
1211 | } |
1212 | |
1213 | bool |
1214 | Perl_is_utf8_graph(pTHX_ U8 *p) |
1215 | { |
386d01d6 |
1216 | if (!is_utf8_char(p)) |
1217 | return FALSE; |
b8c5462f |
1218 | if (!PL_utf8_graph) |
1219 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); |
3568d838 |
1220 | return swash_fetch(PL_utf8_graph, p, TRUE); |
b8c5462f |
1221 | } |
1222 | |
1223 | bool |
864dbfa3 |
1224 | Perl_is_utf8_print(pTHX_ U8 *p) |
a0ed51b3 |
1225 | { |
386d01d6 |
1226 | if (!is_utf8_char(p)) |
1227 | return FALSE; |
a0ed51b3 |
1228 | if (!PL_utf8_print) |
e24b16f9 |
1229 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
3568d838 |
1230 | return swash_fetch(PL_utf8_print, p, TRUE); |
a0ed51b3 |
1231 | } |
1232 | |
1233 | bool |
b8c5462f |
1234 | Perl_is_utf8_punct(pTHX_ U8 *p) |
1235 | { |
386d01d6 |
1236 | if (!is_utf8_char(p)) |
1237 | return FALSE; |
b8c5462f |
1238 | if (!PL_utf8_punct) |
1239 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); |
3568d838 |
1240 | return swash_fetch(PL_utf8_punct, p, TRUE); |
b8c5462f |
1241 | } |
1242 | |
1243 | bool |
1244 | Perl_is_utf8_xdigit(pTHX_ U8 *p) |
1245 | { |
386d01d6 |
1246 | if (!is_utf8_char(p)) |
1247 | return FALSE; |
b8c5462f |
1248 | if (!PL_utf8_xdigit) |
1249 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); |
3568d838 |
1250 | return swash_fetch(PL_utf8_xdigit, p, TRUE); |
b8c5462f |
1251 | } |
1252 | |
1253 | bool |
864dbfa3 |
1254 | Perl_is_utf8_mark(pTHX_ U8 *p) |
a0ed51b3 |
1255 | { |
386d01d6 |
1256 | if (!is_utf8_char(p)) |
1257 | return FALSE; |
a0ed51b3 |
1258 | if (!PL_utf8_mark) |
e24b16f9 |
1259 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
3568d838 |
1260 | return swash_fetch(PL_utf8_mark, p, TRUE); |
a0ed51b3 |
1261 | } |
1262 | |
6b5c0936 |
1263 | /* |
1264 | =for apidoc A|UV|to_utf8_case|U8 *p|U8* ustrp|STRLEN *lenp|SV **swash|char *normal|char *special |
1265 | |
1266 | The "p" contains the pointer to the UTF-8 string encoding |
1267 | the character that is being converted. |
1268 | |
1269 | The "ustrp" is a pointer to the character buffer to put the |
1270 | conversion result to. The "lenp" is a pointer to the length |
1271 | of the result. |
1272 | |
1273 | The "swash" is a pointer to the swash to use. |
1274 | |
1275 | The "normal" is a string like "ToLower" which means the swash |
1276 | $utf8::ToLower, which is stored in lib/unicore/To/Lower.pl, |
1277 | and loaded by SWASHGET, using lib/utf8_heavy.pl. |
1278 | |
1279 | The "special" is a string like "utf8::ToSpecLower", which means |
d1be9408 |
1280 | the hash %utf8::ToSpecLower, which is stored in the same file, |
6b5c0936 |
1281 | lib/unicore/To/Lower.pl, and also loaded by SWASHGET. The access |
1282 | to the hash is by Perl_to_utf8_case(). |
1283 | |
1284 | =cut |
1285 | */ |
1286 | |
2104c8d9 |
1287 | UV |
a6872d42 |
1288 | Perl_to_utf8_case(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp, SV **swashp, char *normal, char *special) |
a0ed51b3 |
1289 | { |
1290 | UV uv; |
1291 | |
983ffd37 |
1292 | if (!*swashp) |
1293 | *swashp = swash_init("utf8", normal, &PL_sv_undef, 4, 0); |
1294 | uv = swash_fetch(*swashp, p, TRUE); |
a241e37b |
1295 | if (!uv) { |
983ffd37 |
1296 | HV *hv; |
1297 | SV *keysv; |
1298 | HE *he; |
1299 | |
1300 | uv = utf8_to_uvchr(p, 0); |
1301 | |
1302 | if ((hv = get_hv(special, FALSE)) && |
6d47b937 |
1303 | (keysv = sv_2mortal(Perl_newSVpvf(aTHX_ "%04"UVXf, uv))) && |
983ffd37 |
1304 | (he = hv_fetch_ent(hv, keysv, FALSE, 0))) { |
1305 | SV *val = HeVAL(he); |
1306 | char *s = SvPV(val, *lenp); |
1307 | U8 c = *(U8*)s; |
a6872d42 |
1308 | |
983ffd37 |
1309 | if (*lenp > 1 || UNI_IS_INVARIANT(c)) |
1310 | Copy(s, ustrp, *lenp, U8); |
1311 | else { |
1312 | /* something in the 0x80..0xFF range */ |
1313 | ustrp[0] = UTF8_EIGHT_BIT_HI(c); |
1314 | ustrp[1] = UTF8_EIGHT_BIT_LO(c); |
1315 | *lenp = 2; |
1316 | } |
a241e37b |
1317 | #ifdef EBCDIC |
1318 | { |
1319 | U8 tmpbuf[UTF8_MAXLEN_FOLD+1]; |
1320 | U8 *d = tmpbuf; |
1321 | U8 *t, *tend; |
1322 | STRLEN tlen; |
1323 | |
1324 | for (t = ustrp, tend = t + *lenp; t < tend; t += tlen) { |
1325 | UV c = utf8_to_uvchr(t, &tlen); |
1326 | d = uvchr_to_utf8(d, UNI_TO_NATIVE(c)); |
1327 | } |
1328 | *lenp = d - tmpbuf; |
1329 | Copy(tmpbuf, ustrp, *lenp, U8); |
1330 | } |
1331 | #endif |
d3e79532 |
1332 | return utf8_to_uvchr(ustrp, 0); |
983ffd37 |
1333 | } |
fc77cbd6 |
1334 | uv = NATIVE_TO_UNI(uv); |
983ffd37 |
1335 | } |
a58d912c |
1336 | if (lenp) |
d90824e8 |
1337 | *lenp = UNISKIP(uv); |
a2a2844f |
1338 | uvuni_to_utf8(ustrp, uv); |
1339 | return uv; |
a0ed51b3 |
1340 | } |
1341 | |
d3e79532 |
1342 | /* |
1343 | =for apidoc A|UV|to_utf8_upper|U8 *p|U8 *ustrp|STRLEN *lenp |
1344 | |
1345 | Convert the UTF-8 encoded character at p to its uppercase version and |
1346 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
1347 | that the ustrp needs to be at least UTF8_MAXLEN_UCLC+1 bytes since the |
1348 | uppercase version may be longer than the original character (up to two |
1349 | characters). |
1350 | |
1351 | The first character of the uppercased version is returned |
1352 | (but note, as explained above, that there may be more.) |
1353 | |
1354 | =cut */ |
1355 | |
2104c8d9 |
1356 | UV |
983ffd37 |
1357 | Perl_to_utf8_upper(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1358 | { |
983ffd37 |
1359 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1360 | &PL_utf8_toupper, "ToUpper", "utf8::ToSpecUpper"); |
983ffd37 |
1361 | } |
a0ed51b3 |
1362 | |
d3e79532 |
1363 | /* |
1364 | =for apidoc A|UV|to_utf8_title|U8 *p|U8 *ustrp|STRLEN *lenp |
1365 | |
1366 | Convert the UTF-8 encoded character at p to its titlecase version and |
1367 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
1368 | that the ustrp needs to be at least UTF8_MAXLEN_UCLC+1 bytes since the |
1369 | titlecase version may be longer than the original character (up to two |
1370 | characters). |
1371 | |
1372 | The first character of the titlecased version is returned |
1373 | (but note, as explained above, that there may be more.) |
1374 | |
1375 | =cut */ |
1376 | |
983ffd37 |
1377 | UV |
1378 | Perl_to_utf8_title(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
1379 | { |
1380 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1381 | &PL_utf8_totitle, "ToTitle", "utf8::ToSpecTitle"); |
a0ed51b3 |
1382 | } |
1383 | |
d3e79532 |
1384 | /* |
1385 | =for apidoc A|UV|to_utf8_lower|U8 *p|U8 *ustrp|STRLEN *lenp |
1386 | |
1387 | Convert the UTF-8 encoded character at p to its lowercase version and |
1388 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
1389 | that the ustrp needs to be at least UTF8_MAXLEN_UCLC+1 bytes since the |
1390 | lowercase version may be longer than the original character (up to two |
1391 | characters). |
1392 | |
1393 | The first character of the lowercased version is returned |
1394 | (but note, as explained above, that there may be more.) |
1395 | |
1396 | =cut */ |
1397 | |
2104c8d9 |
1398 | UV |
a2a2844f |
1399 | Perl_to_utf8_lower(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1400 | { |
983ffd37 |
1401 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1402 | &PL_utf8_tolower, "ToLower", "utf8::ToSpecLower"); |
1403 | } |
1404 | |
d3e79532 |
1405 | /* |
1406 | =for apidoc A|UV|to_utf8_fold|U8 *p|U8 *ustrp|STRLEN *lenp |
1407 | |
1408 | Convert the UTF-8 encoded character at p to its foldcase version and |
1409 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
1410 | that the ustrp needs to be at least UTF8_MAXLEN_FOLD+1 bytes since the |
1411 | foldcase version may be longer than the original character (up to |
1412 | three characters). |
1413 | |
1414 | The first character of the foldcased version is returned |
1415 | (but note, as explained above, that there may be more.) |
1416 | |
1417 | =cut */ |
1418 | |
b4e400f9 |
1419 | UV |
1420 | Perl_to_utf8_fold(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
1421 | { |
1422 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
1423 | &PL_utf8_tofold, "ToFold", "utf8::ToSpecFold"); |
a0ed51b3 |
1424 | } |
1425 | |
1426 | /* a "swash" is a swatch hash */ |
1427 | |
1428 | SV* |
864dbfa3 |
1429 | Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 |
1430 | { |
1431 | SV* retval; |
bf1fed83 |
1432 | SV* tokenbufsv = sv_2mortal(NEWSV(0,0)); |
8e84507e |
1433 | dSP; |
1b026014 |
1434 | HV *stash = gv_stashpvn(pkg, strlen(pkg), FALSE); |
f8be5cf0 |
1435 | SV* errsv_save; |
ce3b816e |
1436 | |
1b026014 |
1437 | if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */ |
ce3b816e |
1438 | ENTER; |
f8be5cf0 |
1439 | errsv_save = newSVsv(ERRSV); |
ce3b816e |
1440 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv); |
f8be5cf0 |
1441 | if (!SvTRUE(ERRSV)) |
1442 | sv_setsv(ERRSV, errsv_save); |
1443 | SvREFCNT_dec(errsv_save); |
ce3b816e |
1444 | LEAVE; |
1445 | } |
1446 | SPAGAIN; |
a0ed51b3 |
1447 | PUSHSTACKi(PERLSI_MAGIC); |
1448 | PUSHMARK(SP); |
1449 | EXTEND(SP,5); |
1450 | PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg)))); |
1451 | PUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
1452 | PUSHs(listsv); |
1453 | PUSHs(sv_2mortal(newSViv(minbits))); |
1454 | PUSHs(sv_2mortal(newSViv(none))); |
1455 | PUTBACK; |
1456 | ENTER; |
1457 | SAVEI32(PL_hints); |
1458 | PL_hints = 0; |
1459 | save_re_context(); |
bf1fed83 |
1460 | if (PL_curcop == &PL_compiling) |
1461 | /* XXX ought to be handled by lex_start */ |
1462 | sv_setpv(tokenbufsv, PL_tokenbuf); |
f8be5cf0 |
1463 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1464 | if (call_method("SWASHNEW", G_SCALAR)) |
8e84507e |
1465 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1466 | else |
e24b16f9 |
1467 | retval = &PL_sv_undef; |
f8be5cf0 |
1468 | if (!SvTRUE(ERRSV)) |
1469 | sv_setsv(ERRSV, errsv_save); |
1470 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1471 | LEAVE; |
1472 | POPSTACK; |
e24b16f9 |
1473 | if (PL_curcop == &PL_compiling) { |
bf1fed83 |
1474 | STRLEN len; |
1475 | char* pv = SvPV(tokenbufsv, len); |
1476 | |
1477 | Copy(pv, PL_tokenbuf, len+1, char); |
e24b16f9 |
1478 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1479 | } |
1480 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) |
cea2e8a9 |
1481 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
a0ed51b3 |
1482 | return retval; |
1483 | } |
1484 | |
035d37be |
1485 | |
1486 | /* This API is wrong for special case conversions since we may need to |
1487 | * return several Unicode characters for a single Unicode character |
1488 | * (see lib/unicore/SpecCase.txt) The SWASHGET in lib/utf8_heavy.pl is |
1489 | * the lower-level routine, and it is similarly broken for returning |
1490 | * multiple values. --jhi */ |
a0ed51b3 |
1491 | UV |
3568d838 |
1492 | Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr, bool do_utf8) |
a0ed51b3 |
1493 | { |
1494 | HV* hv = (HV*)SvRV(sv); |
3568d838 |
1495 | U32 klen; |
1496 | U32 off; |
a0ed51b3 |
1497 | STRLEN slen; |
7d85a32c |
1498 | STRLEN needents; |
4ea42e7f |
1499 | U8 *tmps = NULL; |
a0ed51b3 |
1500 | U32 bit; |
1501 | SV *retval; |
3568d838 |
1502 | U8 tmputf8[2]; |
1503 | UV c = NATIVE_TO_ASCII(*ptr); |
1504 | |
1505 | if (!do_utf8 && !UNI_IS_INVARIANT(c)) { |
1506 | tmputf8[0] = UTF8_EIGHT_BIT_HI(c); |
1507 | tmputf8[1] = UTF8_EIGHT_BIT_LO(c); |
1508 | ptr = tmputf8; |
1509 | } |
1510 | /* Given a UTF-X encoded char 0xAA..0xYY,0xZZ |
1511 | * then the "swatch" is a vec() for al the chars which start |
1512 | * with 0xAA..0xYY |
1513 | * So the key in the hash (klen) is length of encoded char -1 |
1514 | */ |
1515 | klen = UTF8SKIP(ptr) - 1; |
1516 | off = ptr[klen]; |
a0ed51b3 |
1517 | |
7d85a32c |
1518 | if (klen == 0) |
1519 | { |
1520 | /* If char in invariant then swatch is for all the invariant chars |
1521 | * In both UTF-8 and UTF8-MOD that happens to be UTF_CONTINUATION_MARK |
1522 | */ |
1523 | needents = UTF_CONTINUATION_MARK; |
1524 | off = NATIVE_TO_UTF(ptr[klen]); |
1525 | } |
1526 | else |
1527 | { |
1528 | /* If char is encoded then swatch is for the prefix */ |
1529 | needents = (1 << UTF_ACCUMULATION_SHIFT); |
1530 | off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK; |
1531 | } |
1532 | |
a0ed51b3 |
1533 | /* |
1534 | * This single-entry cache saves about 1/3 of the utf8 overhead in test |
1535 | * suite. (That is, only 7-8% overall over just a hash cache. Still, |
1536 | * it's nothing to sniff at.) Pity we usually come through at least |
1537 | * two function calls to get here... |
1538 | * |
1539 | * NB: this code assumes that swatches are never modified, once generated! |
1540 | */ |
1541 | |
3568d838 |
1542 | if (hv == PL_last_swash_hv && |
a0ed51b3 |
1543 | klen == PL_last_swash_klen && |
3568d838 |
1544 | (!klen || memEQ((char *)ptr, (char *)PL_last_swash_key, klen)) ) |
a0ed51b3 |
1545 | { |
1546 | tmps = PL_last_swash_tmps; |
1547 | slen = PL_last_swash_slen; |
1548 | } |
1549 | else { |
1550 | /* Try our second-level swatch cache, kept in a hash. */ |
dfe13c55 |
1551 | SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE); |
a0ed51b3 |
1552 | |
1553 | /* If not cached, generate it via utf8::SWASHGET */ |
dfe13c55 |
1554 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
a0ed51b3 |
1555 | dSP; |
2b9d42f0 |
1556 | /* We use utf8n_to_uvuni() as we want an index into |
1557 | Unicode tables, not a native character number. |
1558 | */ |
1559 | UV code_point = utf8n_to_uvuni(ptr, UTF8_MAXLEN, NULL, 0); |
f8be5cf0 |
1560 | SV *errsv_save; |
a0ed51b3 |
1561 | ENTER; |
1562 | SAVETMPS; |
1563 | save_re_context(); |
1564 | PUSHSTACKi(PERLSI_MAGIC); |
1565 | PUSHMARK(SP); |
1566 | EXTEND(SP,3); |
1567 | PUSHs((SV*)sv); |
ffbc6a93 |
1568 | /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */ |
3568d838 |
1569 | PUSHs(sv_2mortal(newSViv((klen) ? |
1570 | (code_point & ~(needents - 1)) : 0))); |
a0ed51b3 |
1571 | PUSHs(sv_2mortal(newSViv(needents))); |
1572 | PUTBACK; |
f8be5cf0 |
1573 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1574 | if (call_method("SWASHGET", G_SCALAR)) |
8e84507e |
1575 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1576 | else |
e24b16f9 |
1577 | retval = &PL_sv_undef; |
f8be5cf0 |
1578 | if (!SvTRUE(ERRSV)) |
1579 | sv_setsv(ERRSV, errsv_save); |
1580 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1581 | POPSTACK; |
1582 | FREETMPS; |
1583 | LEAVE; |
e24b16f9 |
1584 | if (PL_curcop == &PL_compiling) |
1585 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1586 | |
dfe13c55 |
1587 | svp = hv_store(hv, (char*)ptr, klen, retval, 0); |
a0ed51b3 |
1588 | |
7d85a32c |
1589 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || (slen << 3) < needents) |
cea2e8a9 |
1590 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 |
1591 | } |
1592 | |
1593 | PL_last_swash_hv = hv; |
1594 | PL_last_swash_klen = klen; |
1595 | PL_last_swash_tmps = tmps; |
1596 | PL_last_swash_slen = slen; |
1597 | if (klen) |
1598 | Copy(ptr, PL_last_swash_key, klen, U8); |
1599 | } |
1600 | |
9faf8d75 |
1601 | switch ((int)((slen << 3) / needents)) { |
a0ed51b3 |
1602 | case 1: |
1603 | bit = 1 << (off & 7); |
1604 | off >>= 3; |
1605 | return (tmps[off] & bit) != 0; |
1606 | case 8: |
1607 | return tmps[off]; |
1608 | case 16: |
1609 | off <<= 1; |
1610 | return (tmps[off] << 8) + tmps[off + 1] ; |
1611 | case 32: |
1612 | off <<= 2; |
1613 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; |
1614 | } |
cea2e8a9 |
1615 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 |
1616 | return 0; |
1617 | } |
2b9d42f0 |
1618 | |
1619 | |
1620 | /* |
37607a96 |
1621 | =for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv |
2b9d42f0 |
1622 | |
1623 | Adds the UTF8 representation of the Native codepoint C<uv> to the end |
1624 | of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free |
1625 | bytes available. The return value is the pointer to the byte after the |
1626 | end of the new character. In other words, |
1627 | |
1628 | d = uvchr_to_utf8(d, uv); |
1629 | |
1630 | is the recommended wide native character-aware way of saying |
1631 | |
1632 | *(d++) = uv; |
1633 | |
1634 | =cut |
1635 | */ |
1636 | |
1637 | /* On ASCII machines this is normally a macro but we want a |
1638 | real function in case XS code wants it |
1639 | */ |
1640 | #undef Perl_uvchr_to_utf8 |
1641 | U8 * |
1642 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) |
1643 | { |
b851fbc1 |
1644 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), 0); |
2b9d42f0 |
1645 | } |
1646 | |
b851fbc1 |
1647 | U8 * |
1648 | Perl_uvchr_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags) |
1649 | { |
1650 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), flags); |
1651 | } |
2b9d42f0 |
1652 | |
1653 | /* |
37607a96 |
1654 | =for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
2b9d42f0 |
1655 | |
1656 | Returns the native character value of the first character in the string C<s> |
1657 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
1658 | length, in bytes, of that character. |
1659 | |
1660 | Allows length and flags to be passed to low level routine. |
1661 | |
1662 | =cut |
1663 | */ |
0a2ef054 |
1664 | /* On ASCII machines this is normally a macro but we want |
1665 | a real function in case XS code wants it |
2b9d42f0 |
1666 | */ |
1667 | #undef Perl_utf8n_to_uvchr |
1668 | UV |
37607a96 |
1669 | Perl_utf8n_to_uvchr(pTHX_ U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
2b9d42f0 |
1670 | { |
1671 | UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); |
1672 | return UNI_TO_NATIVE(uv); |
1673 | } |
1674 | |
d2cc3551 |
1675 | /* |
1676 | =for apidoc A|char *|pv_uni_display|SV *dsv|U8 *spv|STRLEN len|STRLEN pvlim|UV flags |
1677 | |
1678 | Build to the scalar dsv a displayable version of the string spv, |
1679 | length len, the displayable version being at most pvlim bytes long |
1680 | (if longer, the rest is truncated and "..." will be appended). |
0a2ef054 |
1681 | |
9e55ce06 |
1682 | The flags argument can have UNI_DISPLAY_ISPRINT set to display |
00e86452 |
1683 | isPRINT()able characters as themselves, UNI_DISPLAY_BACKSLASH |
0a2ef054 |
1684 | to display the \\[nrfta\\] as the backslashed versions (like '\n') |
1685 | (UNI_DISPLAY_BACKSLASH is preferred over UNI_DISPLAY_ISPRINT for \\). |
1686 | UNI_DISPLAY_QQ (and its alias UNI_DISPLAY_REGEX) have both |
1687 | UNI_DISPLAY_BACKSLASH and UNI_DISPLAY_ISPRINT turned on. |
1688 | |
d2cc3551 |
1689 | The pointer to the PV of the dsv is returned. |
1690 | |
1691 | =cut */ |
e6b2e755 |
1692 | char * |
1693 | Perl_pv_uni_display(pTHX_ SV *dsv, U8 *spv, STRLEN len, STRLEN pvlim, UV flags) |
1694 | { |
1695 | int truncated = 0; |
1696 | char *s, *e; |
1697 | |
1698 | sv_setpvn(dsv, "", 0); |
1699 | for (s = (char *)spv, e = s + len; s < e; s += UTF8SKIP(s)) { |
1700 | UV u; |
c728cb41 |
1701 | bool ok = FALSE; |
1702 | |
e6b2e755 |
1703 | if (pvlim && SvCUR(dsv) >= pvlim) { |
1704 | truncated++; |
1705 | break; |
1706 | } |
1707 | u = utf8_to_uvchr((U8*)s, 0); |
c728cb41 |
1708 | if (u < 256) { |
c728cb41 |
1709 | if (!ok && (flags & UNI_DISPLAY_BACKSLASH)) { |
1710 | switch (u & 0xFF) { |
1711 | case '\n': |
1712 | Perl_sv_catpvf(aTHX_ dsv, "\\n"); ok = TRUE; break; |
1713 | case '\r': |
1714 | Perl_sv_catpvf(aTHX_ dsv, "\\r"); ok = TRUE; break; |
1715 | case '\t': |
1716 | Perl_sv_catpvf(aTHX_ dsv, "\\t"); ok = TRUE; break; |
1717 | case '\f': |
1718 | Perl_sv_catpvf(aTHX_ dsv, "\\f"); ok = TRUE; break; |
1719 | case '\a': |
1720 | Perl_sv_catpvf(aTHX_ dsv, "\\a"); ok = TRUE; break; |
1721 | case '\\': |
1722 | Perl_sv_catpvf(aTHX_ dsv, "\\" ); ok = TRUE; break; |
1723 | default: break; |
1724 | } |
1725 | } |
00e86452 |
1726 | /* isPRINT() is the locale-blind version. */ |
1727 | if (!ok && (flags & UNI_DISPLAY_ISPRINT) && isPRINT(u & 0xFF)) { |
0a2ef054 |
1728 | Perl_sv_catpvf(aTHX_ dsv, "%c", u); |
1729 | ok = TRUE; |
1730 | } |
c728cb41 |
1731 | } |
1732 | if (!ok) |
9e55ce06 |
1733 | Perl_sv_catpvf(aTHX_ dsv, "\\x{%"UVxf"}", u); |
e6b2e755 |
1734 | } |
1735 | if (truncated) |
1736 | sv_catpvn(dsv, "...", 3); |
1737 | |
1738 | return SvPVX(dsv); |
1739 | } |
2b9d42f0 |
1740 | |
d2cc3551 |
1741 | /* |
1742 | =for apidoc A|char *|sv_uni_display|SV *dsv|SV *ssv|STRLEN pvlim|UV flags |
1743 | |
1744 | Build to the scalar dsv a displayable version of the scalar sv, |
0a2ef054 |
1745 | the displayable version being at most pvlim bytes long |
d2cc3551 |
1746 | (if longer, the rest is truncated and "..." will be appended). |
0a2ef054 |
1747 | |
1748 | The flags argument is as in pv_uni_display(). |
1749 | |
d2cc3551 |
1750 | The pointer to the PV of the dsv is returned. |
1751 | |
1752 | =cut */ |
e6b2e755 |
1753 | char * |
1754 | Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags) |
1755 | { |
701a277b |
1756 | return Perl_pv_uni_display(aTHX_ dsv, (U8*)SvPVX(ssv), SvCUR(ssv), |
1757 | pvlim, flags); |
1758 | } |
1759 | |
d2cc3551 |
1760 | /* |
d07ddd77 |
1761 | =for apidoc A|I32|ibcmp_utf8|const char *s1|char **pe1|register UV l1|bool u1|const char *s2|char **pe2|register UV l2|bool u2 |
d2cc3551 |
1762 | |
1763 | Return true if the strings s1 and s2 differ case-insensitively, false |
1764 | if not (if they are equal case-insensitively). If u1 is true, the |
1765 | string s1 is assumed to be in UTF-8-encoded Unicode. If u2 is true, |
d07ddd77 |
1766 | the string s2 is assumed to be in UTF-8-encoded Unicode. If u1 or u2 |
1767 | are false, the respective string is assumed to be in native 8-bit |
1768 | encoding. |
1769 | |
1770 | If the pe1 and pe2 are non-NULL, the scanning pointers will be copied |
1771 | in there (they will point at the beginning of the I<next> character). |
1772 | If the pointers behind pe1 or pe2 are non-NULL, they are the end |
1773 | pointers beyond which scanning will not continue under any |
1774 | circustances. If the byte lengths l1 and l2 are non-zero, s1+l1 and |
1775 | s2+l2 will be used as goal end pointers that will also stop the scan, |
1776 | and which qualify towards defining a successful match: all the scans |
1777 | that define an explicit length must reach their goal pointers for |
1778 | a match to succeed). |
d2cc3551 |
1779 | |
1780 | For case-insensitiveness, the "casefolding" of Unicode is used |
1781 | instead of upper/lowercasing both the characters, see |
1782 | http://www.unicode.org/unicode/reports/tr21/ (Case Mappings). |
1783 | |
1784 | =cut */ |
701a277b |
1785 | I32 |
d07ddd77 |
1786 | Perl_ibcmp_utf8(pTHX_ const char *s1, char **pe1, register UV l1, bool u1, const char *s2, char **pe2, register UV l2, bool u2) |
332ddc25 |
1787 | { |
5469e704 |
1788 | register U8 *p1 = (U8*)s1; |
1789 | register U8 *p2 = (U8*)s2; |
d07ddd77 |
1790 | register U8 *e1 = 0, *f1 = 0, *q1 = 0; |
1791 | register U8 *e2 = 0, *f2 = 0, *q2 = 0; |
1792 | STRLEN n1 = 0, n2 = 0; |
ffce6cc2 |
1793 | U8 foldbuf1[UTF8_MAXLEN_FOLD+1]; |
1794 | U8 foldbuf2[UTF8_MAXLEN_FOLD+1]; |
d7f013c8 |
1795 | U8 natbuf[1+1]; |
1796 | STRLEN foldlen1, foldlen2; |
d07ddd77 |
1797 | bool match; |
332ddc25 |
1798 | |
d07ddd77 |
1799 | if (pe1) |
1800 | e1 = *(U8**)pe1; |
1801 | if (e1 == 0 || (l1 && l1 < e1 - (U8*)s1)) |
1802 | f1 = (U8*)s1 + l1; |
1803 | if (pe2) |
1804 | e2 = *(U8**)pe2; |
1805 | if (e2 == 0 || (l2 && l2 < e2 - (U8*)s2)) |
1806 | f2 = (U8*)s2 + l2; |
1807 | |
1808 | if ((e1 == 0 && f1 == 0) || (e2 == 0 && f2 == 0) || (f1 == 0 && f2 == 0)) |
1809 | return 1; /* mismatch; possible infinite loop or false positive */ |
1810 | |
a6872d42 |
1811 | if (!u1 || !u2) |
1812 | natbuf[1] = 0; /* Need to terminate the buffer. */ |
1813 | |
d07ddd77 |
1814 | while ((e1 == 0 || p1 < e1) && |
1815 | (f1 == 0 || p1 < f1) && |
1816 | (e2 == 0 || p2 < e2) && |
1817 | (f2 == 0 || p2 < f2)) { |
1818 | if (n1 == 0) { |
d7f013c8 |
1819 | if (u1) |
1820 | to_utf8_fold(p1, foldbuf1, &foldlen1); |
1821 | else { |
1822 | natbuf[0] = NATIVE_TO_UNI(*p1); |
1823 | to_utf8_fold(natbuf, foldbuf1, &foldlen1); |
1824 | } |
1825 | q1 = foldbuf1; |
d07ddd77 |
1826 | n1 = foldlen1; |
332ddc25 |
1827 | } |
d07ddd77 |
1828 | if (n2 == 0) { |
d7f013c8 |
1829 | if (u2) |
1830 | to_utf8_fold(p2, foldbuf2, &foldlen2); |
1831 | else { |
d07ddd77 |
1832 | natbuf[0] = NATIVE_TO_UNI(*p2); |
d7f013c8 |
1833 | to_utf8_fold(natbuf, foldbuf2, &foldlen2); |
1834 | } |
1835 | q2 = foldbuf2; |
d07ddd77 |
1836 | n2 = foldlen2; |
332ddc25 |
1837 | } |
d07ddd77 |
1838 | while (n1 && n2) { |
1839 | if ( UTF8SKIP(q1) != UTF8SKIP(q2) || |
1840 | (UTF8SKIP(q1) == 1 && *q1 != *q2) || |
1841 | memNE((char*)q1, (char*)q2, UTF8SKIP(q1)) ) |
d7f013c8 |
1842 | return 1; /* mismatch */ |
d07ddd77 |
1843 | n1 -= UTF8SKIP(q1); |
d7f013c8 |
1844 | q1 += UTF8SKIP(q1); |
d07ddd77 |
1845 | n2 -= UTF8SKIP(q2); |
d7f013c8 |
1846 | q2 += UTF8SKIP(q2); |
701a277b |
1847 | } |
d07ddd77 |
1848 | if (n1 == 0) |
d7f013c8 |
1849 | p1 += u1 ? UTF8SKIP(p1) : 1; |
d07ddd77 |
1850 | if (n2 == 0) |
d7f013c8 |
1851 | p2 += u2 ? UTF8SKIP(p2) : 1; |
1852 | |
d2cc3551 |
1853 | } |
5469e704 |
1854 | |
d07ddd77 |
1855 | /* A match is defined by all the scans that specified |
1856 | * an explicit length reaching their final goals. */ |
1857 | match = (f1 == 0 || p1 == f1) && (f2 == 0 || p2 == f2); |
5469e704 |
1858 | |
1859 | if (match) { |
d07ddd77 |
1860 | if (pe1) |
1861 | *pe1 = (char*)p1; |
1862 | if (pe2) |
1863 | *pe2 = (char*)p2; |
5469e704 |
1864 | } |
1865 | |
1866 | return match ? 0 : 1; /* 0 match, 1 mismatch */ |
e6b2e755 |
1867 | } |
701a277b |
1868 | |