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 | |
901b21bf |
27 | static char unees[] = "Malformed UTF-8 character (unexpected end of string)"; |
28 | |
ccfc67b7 |
29 | /* |
30 | =head1 Unicode Support |
a0ed51b3 |
31 | |
b851fbc1 |
32 | =for apidoc A|U8 *|uvuni_to_utf8_flags|U8 *d|UV uv|UV flags |
eebe1485 |
33 | |
34 | Adds the UTF8 representation of the Unicode codepoint C<uv> to the end |
35 | of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free |
36 | bytes available. The return value is the pointer to the byte after the |
9041c2e3 |
37 | end of the new character. In other words, |
eebe1485 |
38 | |
b851fbc1 |
39 | d = uvuni_to_utf8_flags(d, uv, flags); |
40 | |
41 | or, in most cases, |
42 | |
9041c2e3 |
43 | d = uvuni_to_utf8(d, uv); |
eebe1485 |
44 | |
b851fbc1 |
45 | (which is equivalent to) |
46 | |
47 | d = uvuni_to_utf8_flags(d, uv, 0); |
48 | |
eebe1485 |
49 | is the recommended Unicode-aware way of saying |
50 | |
51 | *(d++) = uv; |
52 | |
53 | =cut |
54 | */ |
55 | |
dfe13c55 |
56 | U8 * |
b851fbc1 |
57 | Perl_uvuni_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags) |
a0ed51b3 |
58 | { |
62961d2e |
59 | if (ckWARN(WARN_UTF8)) { |
b851fbc1 |
60 | if (UNICODE_IS_SURROGATE(uv) && |
61 | !(flags & UNICODE_ALLOW_SURROGATE)) |
9014280d |
62 | Perl_warner(aTHX_ packWARN(WARN_UTF8), "UTF-16 surrogate 0x%04"UVxf, uv); |
b851fbc1 |
63 | else if ( |
64 | ((uv >= 0xFDD0 && uv <= 0xFDEF && |
65 | !(flags & UNICODE_ALLOW_FDD0)) |
66 | || |
c867b360 |
67 | ((uv & 0xFFFE) == 0xFFFE && /* Either FFFE or FFFF. */ |
b851fbc1 |
68 | !(flags & UNICODE_ALLOW_FFFF))) && |
69 | /* UNICODE_ALLOW_SUPER includes |
2a20b9da |
70 | * FFFEs and FFFFs beyond 0x10FFFF. */ |
b851fbc1 |
71 | ((uv <= PERL_UNICODE_MAX) || |
72 | !(flags & UNICODE_ALLOW_SUPER)) |
73 | ) |
9014280d |
74 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
507b9800 |
75 | "Unicode character 0x%04"UVxf" is illegal", uv); |
76 | } |
c4d5f83a |
77 | if (UNI_IS_INVARIANT(uv)) { |
78 | *d++ = UTF_TO_NATIVE(uv); |
a0ed51b3 |
79 | return d; |
80 | } |
2d331972 |
81 | #if defined(EBCDIC) |
1d72bdf6 |
82 | else { |
83 | STRLEN len = UNISKIP(uv); |
84 | U8 *p = d+len-1; |
85 | while (p > d) { |
86 | *p-- = UTF_TO_NATIVE((uv & UTF_CONTINUATION_MASK) | UTF_CONTINUATION_MARK); |
87 | uv >>= UTF_ACCUMULATION_SHIFT; |
88 | } |
89 | *p = UTF_TO_NATIVE((uv & UTF_START_MASK(len)) | UTF_START_MARK(len)); |
90 | return d+len; |
91 | } |
92 | #else /* Non loop style */ |
a0ed51b3 |
93 | if (uv < 0x800) { |
94 | *d++ = (( uv >> 6) | 0xc0); |
95 | *d++ = (( uv & 0x3f) | 0x80); |
96 | return d; |
97 | } |
98 | if (uv < 0x10000) { |
99 | *d++ = (( uv >> 12) | 0xe0); |
100 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
101 | *d++ = (( uv & 0x3f) | 0x80); |
102 | return d; |
103 | } |
104 | if (uv < 0x200000) { |
105 | *d++ = (( uv >> 18) | 0xf0); |
106 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
107 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
108 | *d++ = (( uv & 0x3f) | 0x80); |
109 | return d; |
110 | } |
111 | if (uv < 0x4000000) { |
112 | *d++ = (( uv >> 24) | 0xf8); |
113 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
114 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
115 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
116 | *d++ = (( uv & 0x3f) | 0x80); |
117 | return d; |
118 | } |
119 | if (uv < 0x80000000) { |
120 | *d++ = (( uv >> 30) | 0xfc); |
121 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
122 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
123 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
124 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
125 | *d++ = (( uv & 0x3f) | 0x80); |
126 | return d; |
127 | } |
6b8eaf93 |
128 | #ifdef HAS_QUAD |
d7578b48 |
129 | if (uv < UTF8_QUAD_MAX) |
a0ed51b3 |
130 | #endif |
131 | { |
132 | *d++ = 0xfe; /* Can't match U+FEFF! */ |
133 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
134 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
135 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
136 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
137 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
138 | *d++ = (( uv & 0x3f) | 0x80); |
139 | return d; |
140 | } |
6b8eaf93 |
141 | #ifdef HAS_QUAD |
a0ed51b3 |
142 | { |
143 | *d++ = 0xff; /* Can't match U+FFFE! */ |
3c77ea2b |
144 | *d++ = 0x80; /* 6 Reserved bits */ |
145 | *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */ |
146 | *d++ = (((uv >> 54) & 0x3f) | 0x80); |
147 | *d++ = (((uv >> 48) & 0x3f) | 0x80); |
148 | *d++ = (((uv >> 42) & 0x3f) | 0x80); |
a0ed51b3 |
149 | *d++ = (((uv >> 36) & 0x3f) | 0x80); |
150 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
151 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
152 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
153 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
154 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
155 | *d++ = (( uv & 0x3f) | 0x80); |
156 | return d; |
157 | } |
158 | #endif |
1d72bdf6 |
159 | #endif /* Loop style */ |
a0ed51b3 |
160 | } |
b851fbc1 |
161 | |
162 | U8 * |
163 | Perl_uvuni_to_utf8(pTHX_ U8 *d, UV uv) |
164 | { |
165 | return Perl_uvuni_to_utf8_flags(aTHX_ d, uv, 0); |
166 | } |
9041c2e3 |
167 | |
168 | |
169 | /* |
eebe1485 |
170 | =for apidoc A|STRLEN|is_utf8_char|U8 *s |
171 | |
5da9da9e |
172 | Tests if some arbitrary number of bytes begins in a valid UTF-8 |
1d72bdf6 |
173 | character. Note that an INVARIANT (i.e. ASCII) character is a valid UTF-8 character. |
5da9da9e |
174 | The actual number of bytes in the UTF-8 character will be returned if |
175 | it is valid, otherwise 0. |
9041c2e3 |
176 | |
37607a96 |
177 | =cut |
178 | */ |
067a85ef |
179 | STRLEN |
386d01d6 |
180 | Perl_is_utf8_char(pTHX_ U8 *s) |
181 | { |
182 | U8 u = *s; |
067a85ef |
183 | STRLEN slen, len; |
184 | UV uv, ouv; |
386d01d6 |
185 | |
1d72bdf6 |
186 | if (UTF8_IS_INVARIANT(u)) |
386d01d6 |
187 | return 1; |
188 | |
60006e79 |
189 | if (!UTF8_IS_START(u)) |
386d01d6 |
190 | return 0; |
191 | |
9f07fdcd |
192 | len = UTF8SKIP(s); |
386d01d6 |
193 | |
60006e79 |
194 | if (len < 2 || !UTF8_IS_CONTINUATION(s[1])) |
067a85ef |
195 | return 0; |
196 | |
386d01d6 |
197 | slen = len - 1; |
198 | s++; |
6eb6869e |
199 | u &= UTF_START_MASK(len); |
1d72bdf6 |
200 | uv = u; |
067a85ef |
201 | ouv = uv; |
386d01d6 |
202 | while (slen--) { |
60006e79 |
203 | if (!UTF8_IS_CONTINUATION(*s)) |
386d01d6 |
204 | return 0; |
8850bf83 |
205 | uv = UTF8_ACCUMULATE(uv, *s); |
209a9bc1 |
206 | if (uv < ouv) |
067a85ef |
207 | return 0; |
208 | ouv = uv; |
386d01d6 |
209 | s++; |
210 | } |
067a85ef |
211 | |
5bbb0b5a |
212 | if (UNISKIP(uv) < len) |
067a85ef |
213 | return 0; |
214 | |
386d01d6 |
215 | return len; |
216 | } |
217 | |
6662521e |
218 | /* |
eebe1485 |
219 | =for apidoc A|bool|is_utf8_string|U8 *s|STRLEN len |
6662521e |
220 | |
5da9da9e |
221 | Returns true if first C<len> bytes of the given string form a valid UTF8 |
222 | string, false otherwise. Note that 'a valid UTF8 string' does not mean |
223 | 'a string that contains UTF8' because a valid ASCII string is a valid |
224 | UTF8 string. |
6662521e |
225 | |
226 | =cut |
227 | */ |
228 | |
8e84507e |
229 | bool |
6662521e |
230 | Perl_is_utf8_string(pTHX_ U8 *s, STRLEN len) |
231 | { |
067a85ef |
232 | U8* x = s; |
1aa99e6b |
233 | U8* send; |
067a85ef |
234 | STRLEN c; |
235 | |
1aa99e6b |
236 | if (!len) |
6cd5fe39 |
237 | len = strlen((char *)s); |
1aa99e6b |
238 | send = s + len; |
239 | |
6662521e |
240 | while (x < send) { |
241 | c = is_utf8_char(x); |
067a85ef |
242 | if (!c) |
243 | return FALSE; |
6662521e |
244 | x += c; |
6662521e |
245 | } |
60006e79 |
246 | if (x != send) |
247 | return FALSE; |
067a85ef |
248 | |
249 | return TRUE; |
6662521e |
250 | } |
251 | |
67e989fb |
252 | /* |
9041c2e3 |
253 | =for apidoc A|UV|utf8n_to_uvuni|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
67e989fb |
254 | |
9041c2e3 |
255 | Bottom level UTF-8 decode routine. |
256 | Returns the unicode code point value of the first character in the string C<s> |
ba210ebe |
257 | which is assumed to be in UTF8 encoding and no longer than C<curlen>; |
7df053ec |
258 | C<retlen> will be set to the length, in bytes, of that character. |
67e989fb |
259 | |
260 | If C<s> does not point to a well-formed UTF8 character, the behaviour |
dcad2880 |
261 | is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY, |
262 | it is assumed that the caller will raise a warning, and this function |
28d3d195 |
263 | will silently just set C<retlen> to C<-1> and return zero. If the |
264 | C<flags> does not contain UTF8_CHECK_ONLY, warnings about |
265 | malformations will be given, C<retlen> will be set to the expected |
266 | length of the UTF-8 character in bytes, and zero will be returned. |
267 | |
268 | The C<flags> can also contain various flags to allow deviations from |
269 | the strict UTF-8 encoding (see F<utf8.h>). |
67e989fb |
270 | |
9041c2e3 |
271 | Most code should use utf8_to_uvchr() rather than call this directly. |
272 | |
37607a96 |
273 | =cut |
274 | */ |
67e989fb |
275 | |
a0ed51b3 |
276 | UV |
37607a96 |
277 | Perl_utf8n_to_uvuni(pTHX_ U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
a0ed51b3 |
278 | { |
097fb8e2 |
279 | U8 *s0 = s; |
9c5ffd7c |
280 | UV uv = *s, ouv = 0; |
ba210ebe |
281 | STRLEN len = 1; |
282 | bool dowarn = ckWARN_d(WARN_UTF8); |
4f849cb6 |
283 | UV startbyte = *s; |
ba210ebe |
284 | STRLEN expectlen = 0; |
a0dbb045 |
285 | U32 warning = 0; |
286 | |
287 | /* This list is a superset of the UTF8_ALLOW_XXX. */ |
288 | |
289 | #define UTF8_WARN_EMPTY 1 |
290 | #define UTF8_WARN_CONTINUATION 2 |
291 | #define UTF8_WARN_NON_CONTINUATION 3 |
292 | #define UTF8_WARN_FE_FF 4 |
293 | #define UTF8_WARN_SHORT 5 |
294 | #define UTF8_WARN_OVERFLOW 6 |
295 | #define UTF8_WARN_SURROGATE 7 |
c867b360 |
296 | #define UTF8_WARN_LONG 8 |
297 | #define UTF8_WARN_FFFF 9 /* Also FFFE. */ |
a0dbb045 |
298 | |
299 | if (curlen == 0 && |
300 | !(flags & UTF8_ALLOW_EMPTY)) { |
301 | warning = UTF8_WARN_EMPTY; |
0c443dc2 |
302 | goto malformed; |
303 | } |
304 | |
1d72bdf6 |
305 | if (UTF8_IS_INVARIANT(uv)) { |
a0ed51b3 |
306 | if (retlen) |
307 | *retlen = 1; |
c4d5f83a |
308 | return (UV) (NATIVE_TO_UTF(*s)); |
a0ed51b3 |
309 | } |
67e989fb |
310 | |
421a8bf2 |
311 | if (UTF8_IS_CONTINUATION(uv) && |
fcc8fcf6 |
312 | !(flags & UTF8_ALLOW_CONTINUATION)) { |
a0dbb045 |
313 | warning = UTF8_WARN_CONTINUATION; |
ba210ebe |
314 | goto malformed; |
315 | } |
316 | |
421a8bf2 |
317 | if (UTF8_IS_START(uv) && curlen > 1 && !UTF8_IS_CONTINUATION(s[1]) && |
fcc8fcf6 |
318 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
319 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
320 | goto malformed; |
321 | } |
9041c2e3 |
322 | |
1d72bdf6 |
323 | #ifdef EBCDIC |
75383841 |
324 | uv = NATIVE_TO_UTF(uv); |
1d72bdf6 |
325 | #else |
fcc8fcf6 |
326 | if ((uv == 0xfe || uv == 0xff) && |
327 | !(flags & UTF8_ALLOW_FE_FF)) { |
a0dbb045 |
328 | warning = UTF8_WARN_FE_FF; |
ba210ebe |
329 | goto malformed; |
a0ed51b3 |
330 | } |
1d72bdf6 |
331 | #endif |
332 | |
ba210ebe |
333 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
334 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } |
335 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } |
336 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } |
1d72bdf6 |
337 | #ifdef EBCDIC |
338 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
339 | else { len = 7; uv &= 0x01; } |
340 | #else |
ba210ebe |
341 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
342 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
1d72bdf6 |
343 | else { len = 13; uv = 0; } /* whoa! */ |
344 | #endif |
345 | |
a0ed51b3 |
346 | if (retlen) |
347 | *retlen = len; |
9041c2e3 |
348 | |
ba210ebe |
349 | expectlen = len; |
350 | |
fcc8fcf6 |
351 | if ((curlen < expectlen) && |
352 | !(flags & UTF8_ALLOW_SHORT)) { |
a0dbb045 |
353 | warning = UTF8_WARN_SHORT; |
ba210ebe |
354 | goto malformed; |
355 | } |
356 | |
357 | len--; |
a0ed51b3 |
358 | s++; |
ba210ebe |
359 | ouv = uv; |
360 | |
a0ed51b3 |
361 | while (len--) { |
421a8bf2 |
362 | if (!UTF8_IS_CONTINUATION(*s) && |
363 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
364 | s--; |
365 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
366 | goto malformed; |
a0ed51b3 |
367 | } |
368 | else |
8850bf83 |
369 | uv = UTF8_ACCUMULATE(uv, *s); |
a0dbb045 |
370 | if (!(uv > ouv)) { |
371 | /* These cannot be allowed. */ |
372 | if (uv == ouv) { |
373 | if (!(flags & UTF8_ALLOW_LONG)) { |
374 | warning = UTF8_WARN_LONG; |
375 | goto malformed; |
376 | } |
377 | } |
378 | else { /* uv < ouv */ |
379 | /* This cannot be allowed. */ |
380 | warning = UTF8_WARN_OVERFLOW; |
381 | goto malformed; |
382 | } |
ba210ebe |
383 | } |
384 | s++; |
385 | ouv = uv; |
386 | } |
387 | |
421a8bf2 |
388 | if (UNICODE_IS_SURROGATE(uv) && |
fcc8fcf6 |
389 | !(flags & UTF8_ALLOW_SURROGATE)) { |
a0dbb045 |
390 | warning = UTF8_WARN_SURROGATE; |
ba210ebe |
391 | goto malformed; |
fcc8fcf6 |
392 | } else if ((expectlen > UNISKIP(uv)) && |
393 | !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 |
394 | warning = UTF8_WARN_LONG; |
ba210ebe |
395 | goto malformed; |
421a8bf2 |
396 | } else if (UNICODE_IS_ILLEGAL(uv) && |
a9917092 |
397 | !(flags & UTF8_ALLOW_FFFF)) { |
a0dbb045 |
398 | warning = UTF8_WARN_FFFF; |
a9917092 |
399 | goto malformed; |
a0ed51b3 |
400 | } |
ba210ebe |
401 | |
a0ed51b3 |
402 | return uv; |
ba210ebe |
403 | |
404 | malformed: |
405 | |
fcc8fcf6 |
406 | if (flags & UTF8_CHECK_ONLY) { |
ba210ebe |
407 | if (retlen) |
cc366d4b |
408 | *retlen = -1; |
ba210ebe |
409 | return 0; |
410 | } |
411 | |
a0dbb045 |
412 | if (dowarn) { |
413 | SV* sv = sv_2mortal(newSVpv("Malformed UTF-8 character ", 0)); |
414 | |
415 | switch (warning) { |
416 | case 0: /* Intentionally empty. */ break; |
417 | case UTF8_WARN_EMPTY: |
418 | Perl_sv_catpvf(aTHX_ sv, "(empty string)"); |
419 | break; |
420 | case UTF8_WARN_CONTINUATION: |
097fb8e2 |
421 | Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf", with no preceding start byte)", uv); |
a0dbb045 |
422 | break; |
423 | case UTF8_WARN_NON_CONTINUATION: |
097fb8e2 |
424 | if (s == s0) |
425 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", immediately after start byte 0x%02"UVxf")", |
426 | (UV)s[1], startbyte); |
427 | else |
428 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", %d byte%s after start byte 0x%02"UVxf", expected %d bytes)", |
429 | (UV)s[1], s - s0, s - s0 > 1 ? "s" : "", startbyte, expectlen); |
430 | |
a0dbb045 |
431 | break; |
432 | case UTF8_WARN_FE_FF: |
433 | Perl_sv_catpvf(aTHX_ sv, "(byte 0x%02"UVxf")", uv); |
434 | break; |
435 | case UTF8_WARN_SHORT: |
097fb8e2 |
436 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
437 | curlen, curlen == 1 ? "" : "s", expectlen, startbyte); |
b31f83c2 |
438 | expectlen = curlen; /* distance for caller to skip */ |
a0dbb045 |
439 | break; |
440 | case UTF8_WARN_OVERFLOW: |
097fb8e2 |
441 | Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x, after start byte 0x%02"UVxf")", |
442 | ouv, *s, startbyte); |
a0dbb045 |
443 | break; |
444 | case UTF8_WARN_SURROGATE: |
445 | Perl_sv_catpvf(aTHX_ sv, "(UTF-16 surrogate 0x%04"UVxf")", uv); |
446 | break; |
a0dbb045 |
447 | case UTF8_WARN_LONG: |
097fb8e2 |
448 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
449 | expectlen, expectlen == 1 ? "": "s", UNISKIP(uv), startbyte); |
a0dbb045 |
450 | break; |
451 | case UTF8_WARN_FFFF: |
452 | Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv); |
453 | break; |
454 | default: |
455 | Perl_sv_catpvf(aTHX_ sv, "(unknown reason)"); |
456 | break; |
457 | } |
458 | |
459 | if (warning) { |
460 | char *s = SvPVX(sv); |
461 | |
462 | if (PL_op) |
9014280d |
463 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
53e06cf0 |
464 | "%s in %s", s, OP_DESC(PL_op)); |
a0dbb045 |
465 | else |
9014280d |
466 | Perl_warner(aTHX_ packWARN(WARN_UTF8), "%s", s); |
a0dbb045 |
467 | } |
468 | } |
469 | |
ba210ebe |
470 | if (retlen) |
28d3d195 |
471 | *retlen = expectlen ? expectlen : len; |
ba210ebe |
472 | |
28d3d195 |
473 | return 0; |
a0ed51b3 |
474 | } |
475 | |
8e84507e |
476 | /* |
37607a96 |
477 | =for apidoc A|UV|utf8_to_uvchr|U8 *s|STRLEN *retlen |
9041c2e3 |
478 | |
479 | Returns the native character value of the first character in the string C<s> |
480 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
481 | length, in bytes, of that character. |
482 | |
483 | If C<s> does not point to a well-formed UTF8 character, zero is |
484 | returned and retlen is set, if possible, to -1. |
485 | |
486 | =cut |
487 | */ |
488 | |
489 | UV |
37607a96 |
490 | Perl_utf8_to_uvchr(pTHX_ U8 *s, STRLEN *retlen) |
9041c2e3 |
491 | { |
872c91ae |
492 | return Perl_utf8n_to_uvchr(aTHX_ s, UTF8_MAXLEN, retlen, |
493 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
9041c2e3 |
494 | } |
495 | |
496 | /* |
37607a96 |
497 | =for apidoc A|UV|utf8_to_uvuni|U8 *s|STRLEN *retlen |
9041c2e3 |
498 | |
499 | Returns the Unicode code point of the first character in the string C<s> |
500 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
501 | length, in bytes, of that character. |
502 | |
503 | This function should only be used when returned UV is considered |
504 | an index into the Unicode semantic tables (e.g. swashes). |
505 | |
ba210ebe |
506 | If C<s> does not point to a well-formed UTF8 character, zero is |
507 | returned and retlen is set, if possible, to -1. |
8e84507e |
508 | |
509 | =cut |
510 | */ |
511 | |
512 | UV |
37607a96 |
513 | Perl_utf8_to_uvuni(pTHX_ U8 *s, STRLEN *retlen) |
8e84507e |
514 | { |
9041c2e3 |
515 | /* Call the low level routine asking for checks */ |
872c91ae |
516 | return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXLEN, retlen, |
517 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
8e84507e |
518 | } |
519 | |
b76347f2 |
520 | /* |
37607a96 |
521 | =for apidoc A|STRLEN|utf8_length|U8 *s|U8 *e |
b76347f2 |
522 | |
523 | Return the length of the UTF-8 char encoded string C<s> in characters. |
02eb7b47 |
524 | Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end |
525 | up past C<e>, croaks. |
b76347f2 |
526 | |
527 | =cut |
528 | */ |
529 | |
530 | STRLEN |
37607a96 |
531 | Perl_utf8_length(pTHX_ U8 *s, U8 *e) |
b76347f2 |
532 | { |
533 | STRLEN len = 0; |
534 | |
8850bf83 |
535 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
536 | * the bitops (especially ~) can create illegal UTF-8. |
537 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
538 | |
901b21bf |
539 | if (e < s) { |
540 | if (ckWARN_d(WARN_UTF8)) { |
541 | if (PL_op) |
542 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
543 | "%s in %s", unees, OP_DESC(PL_op)); |
544 | else |
545 | Perl_warner(aTHX_ packWARN(WARN_UTF8), unees); |
546 | } |
547 | return 0; |
548 | } |
b76347f2 |
549 | while (s < e) { |
02eb7b47 |
550 | U8 t = UTF8SKIP(s); |
b76347f2 |
551 | |
901b21bf |
552 | if (e - s < t) { |
553 | if (ckWARN_d(WARN_UTF8)) { |
554 | if (PL_op) |
555 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
556 | unees, OP_DESC(PL_op)); |
557 | else |
558 | Perl_warner(aTHX_ packWARN(WARN_UTF8), unees); |
559 | } |
560 | return len; |
561 | } |
b76347f2 |
562 | s += t; |
563 | len++; |
564 | } |
565 | |
566 | return len; |
567 | } |
568 | |
b06226ff |
569 | /* |
eebe1485 |
570 | =for apidoc A|IV|utf8_distance|U8 *a|U8 *b |
b06226ff |
571 | |
572 | Returns the number of UTF8 characters between the UTF-8 pointers C<a> |
573 | and C<b>. |
574 | |
575 | WARNING: use only if you *know* that the pointers point inside the |
576 | same UTF-8 buffer. |
577 | |
37607a96 |
578 | =cut |
579 | */ |
a0ed51b3 |
580 | |
02eb7b47 |
581 | IV |
864dbfa3 |
582 | Perl_utf8_distance(pTHX_ U8 *a, U8 *b) |
a0ed51b3 |
583 | { |
02eb7b47 |
584 | IV off = 0; |
585 | |
8850bf83 |
586 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
587 | * the bitops (especially ~) can create illegal UTF-8. |
588 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
589 | |
a0ed51b3 |
590 | if (a < b) { |
591 | while (a < b) { |
02eb7b47 |
592 | U8 c = UTF8SKIP(a); |
593 | |
901b21bf |
594 | if (b - a < c) { |
595 | if (ckWARN_d(WARN_UTF8)) { |
596 | if (PL_op) |
597 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
598 | "%s in %s", unees, OP_DESC(PL_op)); |
599 | else |
600 | Perl_warner(aTHX_ packWARN(WARN_UTF8), unees); |
601 | } |
602 | return off; |
603 | } |
02eb7b47 |
604 | a += c; |
a0ed51b3 |
605 | off--; |
606 | } |
607 | } |
608 | else { |
609 | while (b < a) { |
02eb7b47 |
610 | U8 c = UTF8SKIP(b); |
611 | |
901b21bf |
612 | if (a - b < c) { |
613 | if (ckWARN_d(WARN_UTF8)) { |
614 | if (PL_op) |
615 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
616 | "%s in %s", unees, OP_DESC(PL_op)); |
617 | else |
618 | Perl_warner(aTHX_ packWARN(WARN_UTF8), unees); |
619 | } |
620 | return off; |
621 | } |
02eb7b47 |
622 | b += c; |
a0ed51b3 |
623 | off++; |
624 | } |
625 | } |
02eb7b47 |
626 | |
a0ed51b3 |
627 | return off; |
628 | } |
629 | |
b06226ff |
630 | /* |
37607a96 |
631 | =for apidoc A|U8 *|utf8_hop|U8 *s|I32 off |
b06226ff |
632 | |
8850bf83 |
633 | Return the UTF-8 pointer C<s> displaced by C<off> characters, either |
634 | forward or backward. |
b06226ff |
635 | |
636 | WARNING: do not use the following unless you *know* C<off> is within |
8850bf83 |
637 | the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned |
638 | on the first byte of character or just after the last byte of a character. |
b06226ff |
639 | |
37607a96 |
640 | =cut |
641 | */ |
a0ed51b3 |
642 | |
643 | U8 * |
864dbfa3 |
644 | Perl_utf8_hop(pTHX_ U8 *s, I32 off) |
a0ed51b3 |
645 | { |
8850bf83 |
646 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g |
647 | * the bitops (especially ~) can create illegal UTF-8. |
648 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
649 | |
a0ed51b3 |
650 | if (off >= 0) { |
651 | while (off--) |
652 | s += UTF8SKIP(s); |
653 | } |
654 | else { |
655 | while (off++) { |
656 | s--; |
8850bf83 |
657 | while (UTF8_IS_CONTINUATION(*s)) |
658 | s--; |
a0ed51b3 |
659 | } |
660 | } |
661 | return s; |
662 | } |
663 | |
6940069f |
664 | /* |
eebe1485 |
665 | =for apidoc A|U8 *|utf8_to_bytes|U8 *s|STRLEN *len |
6940069f |
666 | |
246fae53 |
667 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
668 | Unlike C<bytes_to_utf8>, this over-writes the original string, and |
669 | updates len to contain the new length. |
67e989fb |
670 | Returns zero on failure, setting C<len> to -1. |
6940069f |
671 | |
672 | =cut |
673 | */ |
674 | |
675 | U8 * |
37607a96 |
676 | Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len) |
6940069f |
677 | { |
6940069f |
678 | U8 *send; |
679 | U8 *d; |
dcad2880 |
680 | U8 *save = s; |
246fae53 |
681 | |
682 | /* ensure valid UTF8 and chars < 256 before updating string */ |
dcad2880 |
683 | for (send = s + *len; s < send; ) { |
684 | U8 c = *s++; |
685 | |
1d72bdf6 |
686 | if (!UTF8_IS_INVARIANT(c) && |
687 | (!UTF8_IS_DOWNGRADEABLE_START(c) || (s >= send) |
688 | || !(c = *s++) || !UTF8_IS_CONTINUATION(c))) { |
dcad2880 |
689 | *len = -1; |
690 | return 0; |
691 | } |
246fae53 |
692 | } |
dcad2880 |
693 | |
694 | d = s = save; |
6940069f |
695 | while (s < send) { |
ed646e6e |
696 | STRLEN ulen; |
9041c2e3 |
697 | *d++ = (U8)utf8_to_uvchr(s, &ulen); |
ed646e6e |
698 | s += ulen; |
6940069f |
699 | } |
700 | *d = '\0'; |
246fae53 |
701 | *len = d - save; |
6940069f |
702 | return save; |
703 | } |
704 | |
705 | /* |
f9a63242 |
706 | =for apidoc A|U8 *|bytes_from_utf8|U8 *s|STRLEN *len|bool *is_utf8 |
707 | |
708 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
709 | Unlike <utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to |
ef9edfd0 |
710 | the newly-created string, and updates C<len> to contain the new |
711 | length. Returns the original string if no conversion occurs, C<len> |
712 | is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to |
713 | 0 if C<s> is converted or contains all 7bit characters. |
f9a63242 |
714 | |
37607a96 |
715 | =cut |
716 | */ |
f9a63242 |
717 | |
718 | U8 * |
37607a96 |
719 | Perl_bytes_from_utf8(pTHX_ U8 *s, STRLEN *len, bool *is_utf8) |
f9a63242 |
720 | { |
f9a63242 |
721 | U8 *d; |
722 | U8 *start = s; |
db42d148 |
723 | U8 *send; |
f9a63242 |
724 | I32 count = 0; |
725 | |
726 | if (!*is_utf8) |
727 | return start; |
728 | |
ef9edfd0 |
729 | /* ensure valid UTF8 and chars < 256 before converting string */ |
f9a63242 |
730 | for (send = s + *len; s < send;) { |
731 | U8 c = *s++; |
1d72bdf6 |
732 | if (!UTF8_IS_INVARIANT(c)) { |
db42d148 |
733 | if (UTF8_IS_DOWNGRADEABLE_START(c) && s < send && |
734 | (c = *s++) && UTF8_IS_CONTINUATION(c)) |
735 | count++; |
736 | else |
f9a63242 |
737 | return start; |
db42d148 |
738 | } |
f9a63242 |
739 | } |
740 | |
741 | *is_utf8 = 0; |
742 | |
f9a63242 |
743 | Newz(801, d, (*len) - count + 1, U8); |
ef9edfd0 |
744 | s = start; start = d; |
f9a63242 |
745 | while (s < send) { |
746 | U8 c = *s++; |
c4d5f83a |
747 | if (!UTF8_IS_INVARIANT(c)) { |
748 | /* Then it is two-byte encoded */ |
749 | c = UTF8_ACCUMULATE(NATIVE_TO_UTF(c), *s++); |
750 | c = ASCII_TO_NATIVE(c); |
751 | } |
752 | *d++ = c; |
f9a63242 |
753 | } |
754 | *d = '\0'; |
755 | *len = d - start; |
756 | return start; |
757 | } |
758 | |
759 | /* |
eebe1485 |
760 | =for apidoc A|U8 *|bytes_to_utf8|U8 *s|STRLEN *len |
6940069f |
761 | |
762 | Converts a string C<s> of length C<len> from ASCII into UTF8 encoding. |
6662521e |
763 | Returns a pointer to the newly-created string, and sets C<len> to |
764 | reflect the new length. |
6940069f |
765 | |
497711e7 |
766 | =cut |
6940069f |
767 | */ |
768 | |
769 | U8* |
37607a96 |
770 | Perl_bytes_to_utf8(pTHX_ U8 *s, STRLEN *len) |
6940069f |
771 | { |
6940069f |
772 | U8 *send; |
773 | U8 *d; |
774 | U8 *dst; |
6662521e |
775 | send = s + (*len); |
6940069f |
776 | |
6662521e |
777 | Newz(801, d, (*len) * 2 + 1, U8); |
6940069f |
778 | dst = d; |
779 | |
780 | while (s < send) { |
db42d148 |
781 | UV uv = NATIVE_TO_ASCII(*s++); |
c4d5f83a |
782 | if (UNI_IS_INVARIANT(uv)) |
783 | *d++ = UTF_TO_NATIVE(uv); |
6940069f |
784 | else { |
90f44359 |
785 | *d++ = UTF8_EIGHT_BIT_HI(uv); |
786 | *d++ = UTF8_EIGHT_BIT_LO(uv); |
6940069f |
787 | } |
788 | } |
789 | *d = '\0'; |
6662521e |
790 | *len = d-dst; |
6940069f |
791 | return dst; |
792 | } |
793 | |
a0ed51b3 |
794 | /* |
dea0fc0b |
795 | * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8. |
a0ed51b3 |
796 | * |
797 | * Destination must be pre-extended to 3/2 source. Do not use in-place. |
798 | * We optimize for native, for obvious reasons. */ |
799 | |
800 | U8* |
dea0fc0b |
801 | Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
802 | { |
dea0fc0b |
803 | U8* pend; |
804 | U8* dstart = d; |
805 | |
806 | if (bytelen & 1) |
a7867d0a |
807 | Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen"); |
dea0fc0b |
808 | |
809 | pend = p + bytelen; |
810 | |
a0ed51b3 |
811 | while (p < pend) { |
dea0fc0b |
812 | UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */ |
813 | p += 2; |
a0ed51b3 |
814 | if (uv < 0x80) { |
815 | *d++ = uv; |
816 | continue; |
817 | } |
818 | if (uv < 0x800) { |
819 | *d++ = (( uv >> 6) | 0xc0); |
820 | *d++ = (( uv & 0x3f) | 0x80); |
821 | continue; |
822 | } |
823 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ |
dea0fc0b |
824 | UV low = *p++; |
825 | if (low < 0xdc00 || low >= 0xdfff) |
826 | Perl_croak(aTHX_ "Malformed UTF-16 surrogate"); |
a0ed51b3 |
827 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
828 | } |
829 | if (uv < 0x10000) { |
830 | *d++ = (( uv >> 12) | 0xe0); |
831 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
832 | *d++ = (( uv & 0x3f) | 0x80); |
833 | continue; |
834 | } |
835 | else { |
836 | *d++ = (( uv >> 18) | 0xf0); |
837 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
838 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
839 | *d++ = (( uv & 0x3f) | 0x80); |
840 | continue; |
841 | } |
842 | } |
dea0fc0b |
843 | *newlen = d - dstart; |
a0ed51b3 |
844 | return d; |
845 | } |
846 | |
847 | /* Note: this one is slightly destructive of the source. */ |
848 | |
849 | U8* |
dea0fc0b |
850 | Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
851 | { |
852 | U8* s = (U8*)p; |
853 | U8* send = s + bytelen; |
854 | while (s < send) { |
855 | U8 tmp = s[0]; |
856 | s[0] = s[1]; |
857 | s[1] = tmp; |
858 | s += 2; |
859 | } |
dea0fc0b |
860 | return utf16_to_utf8(p, d, bytelen, newlen); |
a0ed51b3 |
861 | } |
862 | |
863 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ |
864 | |
865 | bool |
84afefe6 |
866 | Perl_is_uni_alnum(pTHX_ UV c) |
a0ed51b3 |
867 | { |
ad391ad9 |
868 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
869 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
870 | return is_utf8_alnum(tmpbuf); |
871 | } |
872 | |
873 | bool |
84afefe6 |
874 | Perl_is_uni_alnumc(pTHX_ UV c) |
b8c5462f |
875 | { |
ad391ad9 |
876 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
877 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
878 | return is_utf8_alnumc(tmpbuf); |
879 | } |
880 | |
881 | bool |
84afefe6 |
882 | Perl_is_uni_idfirst(pTHX_ UV c) |
a0ed51b3 |
883 | { |
ad391ad9 |
884 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
885 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
886 | return is_utf8_idfirst(tmpbuf); |
887 | } |
888 | |
889 | bool |
84afefe6 |
890 | Perl_is_uni_alpha(pTHX_ UV c) |
a0ed51b3 |
891 | { |
ad391ad9 |
892 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
893 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
894 | return is_utf8_alpha(tmpbuf); |
895 | } |
896 | |
897 | bool |
84afefe6 |
898 | Perl_is_uni_ascii(pTHX_ UV c) |
4d61ec05 |
899 | { |
ad391ad9 |
900 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
901 | uvchr_to_utf8(tmpbuf, c); |
4d61ec05 |
902 | return is_utf8_ascii(tmpbuf); |
903 | } |
904 | |
905 | bool |
84afefe6 |
906 | Perl_is_uni_space(pTHX_ UV c) |
a0ed51b3 |
907 | { |
ad391ad9 |
908 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
909 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
910 | return is_utf8_space(tmpbuf); |
911 | } |
912 | |
913 | bool |
84afefe6 |
914 | Perl_is_uni_digit(pTHX_ UV c) |
a0ed51b3 |
915 | { |
ad391ad9 |
916 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
917 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
918 | return is_utf8_digit(tmpbuf); |
919 | } |
920 | |
921 | bool |
84afefe6 |
922 | Perl_is_uni_upper(pTHX_ UV c) |
a0ed51b3 |
923 | { |
ad391ad9 |
924 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
925 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
926 | return is_utf8_upper(tmpbuf); |
927 | } |
928 | |
929 | bool |
84afefe6 |
930 | Perl_is_uni_lower(pTHX_ UV c) |
a0ed51b3 |
931 | { |
ad391ad9 |
932 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
933 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
934 | return is_utf8_lower(tmpbuf); |
935 | } |
936 | |
937 | bool |
84afefe6 |
938 | Perl_is_uni_cntrl(pTHX_ UV c) |
b8c5462f |
939 | { |
ad391ad9 |
940 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
941 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
942 | return is_utf8_cntrl(tmpbuf); |
943 | } |
944 | |
945 | bool |
84afefe6 |
946 | Perl_is_uni_graph(pTHX_ UV c) |
b8c5462f |
947 | { |
ad391ad9 |
948 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
949 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
950 | return is_utf8_graph(tmpbuf); |
951 | } |
952 | |
953 | bool |
84afefe6 |
954 | Perl_is_uni_print(pTHX_ UV c) |
a0ed51b3 |
955 | { |
ad391ad9 |
956 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
957 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
958 | return is_utf8_print(tmpbuf); |
959 | } |
960 | |
b8c5462f |
961 | bool |
84afefe6 |
962 | Perl_is_uni_punct(pTHX_ UV c) |
b8c5462f |
963 | { |
ad391ad9 |
964 | U8 tmpbuf[UTF8_MAXLEN+1]; |
230880c1 |
965 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
966 | return is_utf8_punct(tmpbuf); |
967 | } |
968 | |
4d61ec05 |
969 | bool |
84afefe6 |
970 | Perl_is_uni_xdigit(pTHX_ UV c) |
4d61ec05 |
971 | { |
e7ae6809 |
972 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
230880c1 |
973 | uvchr_to_utf8(tmpbuf, c); |
4d61ec05 |
974 | return is_utf8_xdigit(tmpbuf); |
975 | } |
976 | |
84afefe6 |
977 | UV |
978 | Perl_to_uni_upper(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
979 | { |
0ebc6274 |
980 | uvchr_to_utf8(p, c); |
981 | return to_utf8_upper(p, p, lenp); |
a0ed51b3 |
982 | } |
983 | |
84afefe6 |
984 | UV |
985 | Perl_to_uni_title(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
986 | { |
0ebc6274 |
987 | uvchr_to_utf8(p, c); |
988 | return to_utf8_title(p, p, lenp); |
a0ed51b3 |
989 | } |
990 | |
84afefe6 |
991 | UV |
992 | Perl_to_uni_lower(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
993 | { |
0ebc6274 |
994 | uvchr_to_utf8(p, c); |
995 | return to_utf8_lower(p, p, lenp); |
a0ed51b3 |
996 | } |
997 | |
84afefe6 |
998 | UV |
999 | Perl_to_uni_fold(pTHX_ UV c, U8* p, STRLEN *lenp) |
1000 | { |
0ebc6274 |
1001 | uvchr_to_utf8(p, c); |
1002 | return to_utf8_fold(p, p, lenp); |
84afefe6 |
1003 | } |
1004 | |
a0ed51b3 |
1005 | /* for now these all assume no locale info available for Unicode > 255 */ |
1006 | |
1007 | bool |
84afefe6 |
1008 | Perl_is_uni_alnum_lc(pTHX_ UV c) |
a0ed51b3 |
1009 | { |
1010 | return is_uni_alnum(c); /* XXX no locale support yet */ |
1011 | } |
1012 | |
1013 | bool |
84afefe6 |
1014 | Perl_is_uni_alnumc_lc(pTHX_ UV c) |
b8c5462f |
1015 | { |
1016 | return is_uni_alnumc(c); /* XXX no locale support yet */ |
1017 | } |
1018 | |
1019 | bool |
84afefe6 |
1020 | Perl_is_uni_idfirst_lc(pTHX_ UV c) |
a0ed51b3 |
1021 | { |
1022 | return is_uni_idfirst(c); /* XXX no locale support yet */ |
1023 | } |
1024 | |
1025 | bool |
84afefe6 |
1026 | Perl_is_uni_alpha_lc(pTHX_ UV c) |
a0ed51b3 |
1027 | { |
1028 | return is_uni_alpha(c); /* XXX no locale support yet */ |
1029 | } |
1030 | |
1031 | bool |
84afefe6 |
1032 | Perl_is_uni_ascii_lc(pTHX_ UV c) |
4d61ec05 |
1033 | { |
1034 | return is_uni_ascii(c); /* XXX no locale support yet */ |
1035 | } |
1036 | |
1037 | bool |
84afefe6 |
1038 | Perl_is_uni_space_lc(pTHX_ UV c) |
a0ed51b3 |
1039 | { |
1040 | return is_uni_space(c); /* XXX no locale support yet */ |
1041 | } |
1042 | |
1043 | bool |
84afefe6 |
1044 | Perl_is_uni_digit_lc(pTHX_ UV c) |
a0ed51b3 |
1045 | { |
1046 | return is_uni_digit(c); /* XXX no locale support yet */ |
1047 | } |
1048 | |
1049 | bool |
84afefe6 |
1050 | Perl_is_uni_upper_lc(pTHX_ UV c) |
a0ed51b3 |
1051 | { |
1052 | return is_uni_upper(c); /* XXX no locale support yet */ |
1053 | } |
1054 | |
1055 | bool |
84afefe6 |
1056 | Perl_is_uni_lower_lc(pTHX_ UV c) |
a0ed51b3 |
1057 | { |
1058 | return is_uni_lower(c); /* XXX no locale support yet */ |
1059 | } |
1060 | |
1061 | bool |
84afefe6 |
1062 | Perl_is_uni_cntrl_lc(pTHX_ UV c) |
b8c5462f |
1063 | { |
1064 | return is_uni_cntrl(c); /* XXX no locale support yet */ |
1065 | } |
1066 | |
1067 | bool |
84afefe6 |
1068 | Perl_is_uni_graph_lc(pTHX_ UV c) |
b8c5462f |
1069 | { |
1070 | return is_uni_graph(c); /* XXX no locale support yet */ |
1071 | } |
1072 | |
1073 | bool |
84afefe6 |
1074 | Perl_is_uni_print_lc(pTHX_ UV c) |
a0ed51b3 |
1075 | { |
1076 | return is_uni_print(c); /* XXX no locale support yet */ |
1077 | } |
1078 | |
b8c5462f |
1079 | bool |
84afefe6 |
1080 | Perl_is_uni_punct_lc(pTHX_ UV c) |
b8c5462f |
1081 | { |
1082 | return is_uni_punct(c); /* XXX no locale support yet */ |
1083 | } |
1084 | |
4d61ec05 |
1085 | bool |
84afefe6 |
1086 | Perl_is_uni_xdigit_lc(pTHX_ UV c) |
4d61ec05 |
1087 | { |
1088 | return is_uni_xdigit(c); /* XXX no locale support yet */ |
1089 | } |
1090 | |
b7ac61fa |
1091 | U32 |
1092 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
1093 | { |
ee099d14 |
1094 | /* XXX returns only the first character -- do not use XXX */ |
1095 | /* XXX no locale support yet */ |
1096 | STRLEN len; |
1097 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
1098 | return (U32)to_uni_upper(c, tmpbuf, &len); |
b7ac61fa |
1099 | } |
1100 | |
1101 | U32 |
1102 | Perl_to_uni_title_lc(pTHX_ U32 c) |
1103 | { |
ee099d14 |
1104 | /* XXX returns only the first character XXX -- do not use XXX */ |
1105 | /* XXX no locale support yet */ |
1106 | STRLEN len; |
1107 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
1108 | return (U32)to_uni_title(c, tmpbuf, &len); |
b7ac61fa |
1109 | } |
1110 | |
1111 | U32 |
1112 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
1113 | { |
ee099d14 |
1114 | /* XXX returns only the first character -- do not use XXX */ |
1115 | /* XXX no locale support yet */ |
1116 | STRLEN len; |
1117 | U8 tmpbuf[UTF8_MAXLEN_UCLC+1]; |
1118 | return (U32)to_uni_lower(c, tmpbuf, &len); |
b7ac61fa |
1119 | } |
1120 | |
a0ed51b3 |
1121 | bool |
864dbfa3 |
1122 | Perl_is_utf8_alnum(pTHX_ U8 *p) |
a0ed51b3 |
1123 | { |
386d01d6 |
1124 | if (!is_utf8_char(p)) |
1125 | return FALSE; |
a0ed51b3 |
1126 | if (!PL_utf8_alnum) |
289d4f09 |
1127 | /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true |
1128 | * descendant of isalnum(3), in other words, it doesn't |
1129 | * contain the '_'. --jhi */ |
1130 | PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0); |
3568d838 |
1131 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
a0ed51b3 |
1132 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ |
1133 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1134 | if (!PL_utf8_alnum) |
1135 | PL_utf8_alnum = swash_init("utf8", "", |
1136 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
3568d838 |
1137 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
a0ed51b3 |
1138 | #endif |
1139 | } |
1140 | |
1141 | bool |
b8c5462f |
1142 | Perl_is_utf8_alnumc(pTHX_ U8 *p) |
1143 | { |
386d01d6 |
1144 | if (!is_utf8_char(p)) |
1145 | return FALSE; |
b8c5462f |
1146 | if (!PL_utf8_alnum) |
1147 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); |
3568d838 |
1148 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
b8c5462f |
1149 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ |
1150 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1151 | if (!PL_utf8_alnum) |
1152 | PL_utf8_alnum = swash_init("utf8", "", |
1153 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
3568d838 |
1154 | return swash_fetch(PL_utf8_alnum, p, TRUE); |
b8c5462f |
1155 | #endif |
1156 | } |
1157 | |
1158 | bool |
864dbfa3 |
1159 | Perl_is_utf8_idfirst(pTHX_ U8 *p) |
a0ed51b3 |
1160 | { |
1161 | return *p == '_' || is_utf8_alpha(p); |
1162 | } |
1163 | |
1164 | bool |
864dbfa3 |
1165 | Perl_is_utf8_alpha(pTHX_ U8 *p) |
a0ed51b3 |
1166 | { |
386d01d6 |
1167 | if (!is_utf8_char(p)) |
1168 | return FALSE; |
a0ed51b3 |
1169 | if (!PL_utf8_alpha) |
e24b16f9 |
1170 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
3568d838 |
1171 | return swash_fetch(PL_utf8_alpha, p, TRUE); |
a0ed51b3 |
1172 | } |
1173 | |
1174 | bool |
b8c5462f |
1175 | Perl_is_utf8_ascii(pTHX_ U8 *p) |
1176 | { |
386d01d6 |
1177 | if (!is_utf8_char(p)) |
1178 | return FALSE; |
b8c5462f |
1179 | if (!PL_utf8_ascii) |
1180 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); |
3568d838 |
1181 | return swash_fetch(PL_utf8_ascii, p, TRUE); |
b8c5462f |
1182 | } |
1183 | |
1184 | bool |
864dbfa3 |
1185 | Perl_is_utf8_space(pTHX_ U8 *p) |
a0ed51b3 |
1186 | { |
386d01d6 |
1187 | if (!is_utf8_char(p)) |
1188 | return FALSE; |
a0ed51b3 |
1189 | if (!PL_utf8_space) |
3bec3564 |
1190 | PL_utf8_space = swash_init("utf8", "IsSpacePerl", &PL_sv_undef, 0, 0); |
3568d838 |
1191 | return swash_fetch(PL_utf8_space, p, TRUE); |
a0ed51b3 |
1192 | } |
1193 | |
1194 | bool |
864dbfa3 |
1195 | Perl_is_utf8_digit(pTHX_ U8 *p) |
a0ed51b3 |
1196 | { |
386d01d6 |
1197 | if (!is_utf8_char(p)) |
1198 | return FALSE; |
a0ed51b3 |
1199 | if (!PL_utf8_digit) |
e24b16f9 |
1200 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
3568d838 |
1201 | return swash_fetch(PL_utf8_digit, p, TRUE); |
a0ed51b3 |
1202 | } |
1203 | |
1204 | bool |
864dbfa3 |
1205 | Perl_is_utf8_upper(pTHX_ U8 *p) |
a0ed51b3 |
1206 | { |
386d01d6 |
1207 | if (!is_utf8_char(p)) |
1208 | return FALSE; |
a0ed51b3 |
1209 | if (!PL_utf8_upper) |
e24b16f9 |
1210 | PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0); |
3568d838 |
1211 | return swash_fetch(PL_utf8_upper, p, TRUE); |
a0ed51b3 |
1212 | } |
1213 | |
1214 | bool |
864dbfa3 |
1215 | Perl_is_utf8_lower(pTHX_ U8 *p) |
a0ed51b3 |
1216 | { |
386d01d6 |
1217 | if (!is_utf8_char(p)) |
1218 | return FALSE; |
a0ed51b3 |
1219 | if (!PL_utf8_lower) |
e24b16f9 |
1220 | PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0); |
3568d838 |
1221 | return swash_fetch(PL_utf8_lower, p, TRUE); |
a0ed51b3 |
1222 | } |
1223 | |
1224 | bool |
b8c5462f |
1225 | Perl_is_utf8_cntrl(pTHX_ U8 *p) |
1226 | { |
386d01d6 |
1227 | if (!is_utf8_char(p)) |
1228 | return FALSE; |
b8c5462f |
1229 | if (!PL_utf8_cntrl) |
1230 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); |
3568d838 |
1231 | return swash_fetch(PL_utf8_cntrl, p, TRUE); |
b8c5462f |
1232 | } |
1233 | |
1234 | bool |
1235 | Perl_is_utf8_graph(pTHX_ U8 *p) |
1236 | { |
386d01d6 |
1237 | if (!is_utf8_char(p)) |
1238 | return FALSE; |
b8c5462f |
1239 | if (!PL_utf8_graph) |
1240 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); |
3568d838 |
1241 | return swash_fetch(PL_utf8_graph, p, TRUE); |
b8c5462f |
1242 | } |
1243 | |
1244 | bool |
864dbfa3 |
1245 | Perl_is_utf8_print(pTHX_ U8 *p) |
a0ed51b3 |
1246 | { |
386d01d6 |
1247 | if (!is_utf8_char(p)) |
1248 | return FALSE; |
a0ed51b3 |
1249 | if (!PL_utf8_print) |
e24b16f9 |
1250 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
3568d838 |
1251 | return swash_fetch(PL_utf8_print, p, TRUE); |
a0ed51b3 |
1252 | } |
1253 | |
1254 | bool |
b8c5462f |
1255 | Perl_is_utf8_punct(pTHX_ U8 *p) |
1256 | { |
386d01d6 |
1257 | if (!is_utf8_char(p)) |
1258 | return FALSE; |
b8c5462f |
1259 | if (!PL_utf8_punct) |
1260 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); |
3568d838 |
1261 | return swash_fetch(PL_utf8_punct, p, TRUE); |
b8c5462f |
1262 | } |
1263 | |
1264 | bool |
1265 | Perl_is_utf8_xdigit(pTHX_ U8 *p) |
1266 | { |
386d01d6 |
1267 | if (!is_utf8_char(p)) |
1268 | return FALSE; |
b8c5462f |
1269 | if (!PL_utf8_xdigit) |
1270 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); |
3568d838 |
1271 | return swash_fetch(PL_utf8_xdigit, p, TRUE); |
b8c5462f |
1272 | } |
1273 | |
1274 | bool |
864dbfa3 |
1275 | Perl_is_utf8_mark(pTHX_ U8 *p) |
a0ed51b3 |
1276 | { |
386d01d6 |
1277 | if (!is_utf8_char(p)) |
1278 | return FALSE; |
a0ed51b3 |
1279 | if (!PL_utf8_mark) |
e24b16f9 |
1280 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
3568d838 |
1281 | return swash_fetch(PL_utf8_mark, p, TRUE); |
a0ed51b3 |
1282 | } |
1283 | |
6b5c0936 |
1284 | /* |
1285 | =for apidoc A|UV|to_utf8_case|U8 *p|U8* ustrp|STRLEN *lenp|SV **swash|char *normal|char *special |
1286 | |
1287 | The "p" contains the pointer to the UTF-8 string encoding |
1288 | the character that is being converted. |
1289 | |
1290 | The "ustrp" is a pointer to the character buffer to put the |
1291 | conversion result to. The "lenp" is a pointer to the length |
1292 | of the result. |
1293 | |
0134edef |
1294 | The "swashp" is a pointer to the swash to use. |
6b5c0936 |
1295 | |
0134edef |
1296 | Both the special and normal mappings are stored lib/unicore/To/Foo.pl, |
1297 | and loaded by SWASHGET, using lib/utf8_heavy.pl. The special (usually, |
1298 | but not always, a multicharacter mapping), is tried first. |
6b5c0936 |
1299 | |
0134edef |
1300 | The "special" is a string like "utf8::ToSpecLower", which means the |
1301 | hash %utf8::ToSpecLower. The access to the hash is through |
1302 | Perl_to_utf8_case(). |
6b5c0936 |
1303 | |
0134edef |
1304 | The "normal" is a string like "ToLower" which means the swash |
1305 | %utf8::ToLower. |
1306 | |
1307 | =cut */ |
6b5c0936 |
1308 | |
2104c8d9 |
1309 | UV |
a6872d42 |
1310 | Perl_to_utf8_case(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp, SV **swashp, char *normal, char *special) |
a0ed51b3 |
1311 | { |
0134edef |
1312 | UV uv0, uv1; |
2f9475ad |
1313 | U8 tmpbuf[UTF8_MAXLEN_FOLD+1]; |
0134edef |
1314 | STRLEN len = 0; |
a0ed51b3 |
1315 | |
1feea2c7 |
1316 | uv0 = utf8_to_uvchr(p, 0); |
1317 | /* The NATIVE_TO_UNI() and UNI_TO_NATIVE() mappings |
1318 | * are necessary in EBCDIC, they are redundant no-ops |
1319 | * in ASCII-ish platforms, and hopefully optimized away. */ |
1320 | uv1 = NATIVE_TO_UNI(uv0); |
1321 | uvuni_to_utf8(tmpbuf, uv1); |
0134edef |
1322 | |
1323 | if (!*swashp) /* load on-demand */ |
1324 | *swashp = swash_init("utf8", normal, &PL_sv_undef, 4, 0); |
1325 | |
1326 | if (special) { |
1327 | /* It might be "special" (sometimes, but not always, |
2a37f04d |
1328 | * a multicharacter mapping) */ |
983ffd37 |
1329 | HV *hv; |
1330 | SV *keysv; |
1331 | HE *he; |
2a37f04d |
1332 | SV *val; |
2f9475ad |
1333 | |
983ffd37 |
1334 | if ((hv = get_hv(special, FALSE)) && |
1feea2c7 |
1335 | (keysv = sv_2mortal(Perl_newSVpvf(aTHX_ "%04"UVXf, uv1))) && |
2a37f04d |
1336 | (he = hv_fetch_ent(hv, keysv, FALSE, 0)) && |
1337 | (val = HeVAL(he))) { |
47654450 |
1338 | char *s; |
47654450 |
1339 | |
2a37f04d |
1340 | s = SvPV(val, len); |
47654450 |
1341 | if (len == 1) |
1342 | len = uvuni_to_utf8(ustrp, NATIVE_TO_UNI(*(U8*)s)) - ustrp; |
2a37f04d |
1343 | else { |
2f9475ad |
1344 | #ifdef EBCDIC |
1345 | /* If we have EBCDIC we need to remap the characters |
1346 | * since any characters in the low 256 are Unicode |
1347 | * code points, not EBCDIC. */ |
7cda7a3d |
1348 | U8 *t = (U8*)s, *tend = t + len, *d; |
2f9475ad |
1349 | |
1350 | d = tmpbuf; |
1351 | if (SvUTF8(val)) { |
1352 | STRLEN tlen = 0; |
1353 | |
1354 | while (t < tend) { |
1355 | UV c = utf8_to_uvchr(t, &tlen); |
1356 | if (tlen > 0) { |
1357 | d = uvchr_to_utf8(d, UNI_TO_NATIVE(c)); |
1358 | t += tlen; |
1359 | } |
1360 | else |
1361 | break; |
1362 | } |
1363 | } |
1364 | else { |
36fec512 |
1365 | while (t < tend) { |
1366 | d = uvchr_to_utf8(d, UNI_TO_NATIVE(*t)); |
1367 | t++; |
1368 | } |
2f9475ad |
1369 | } |
1370 | len = d - tmpbuf; |
1371 | Copy(tmpbuf, ustrp, len, U8); |
1372 | #else |
d2dcd0fb |
1373 | Copy(s, ustrp, len, U8); |
2f9475ad |
1374 | #endif |
29e98929 |
1375 | } |
983ffd37 |
1376 | } |
0134edef |
1377 | } |
1378 | |
1379 | if (!len && *swashp) { |
1380 | UV uv2 = swash_fetch(*swashp, tmpbuf, TRUE); |
1381 | |
1382 | if (uv2) { |
1383 | /* It was "normal" (a single character mapping). */ |
1384 | UV uv3 = UNI_TO_NATIVE(uv2); |
1385 | |
e9101d72 |
1386 | len = uvchr_to_utf8(ustrp, uv3) - ustrp; |
2a37f04d |
1387 | } |
1388 | } |
1feea2c7 |
1389 | |
0134edef |
1390 | if (!len) /* Neither: just copy. */ |
1391 | len = uvchr_to_utf8(ustrp, uv0) - ustrp; |
1392 | |
2a37f04d |
1393 | if (lenp) |
1394 | *lenp = len; |
1395 | |
0134edef |
1396 | return len ? utf8_to_uvchr(ustrp, 0) : 0; |
a0ed51b3 |
1397 | } |
1398 | |
d3e79532 |
1399 | /* |
1400 | =for apidoc A|UV|to_utf8_upper|U8 *p|U8 *ustrp|STRLEN *lenp |
1401 | |
1402 | Convert the UTF-8 encoded character at p to its uppercase version and |
1403 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
1404 | that the ustrp needs to be at least UTF8_MAXLEN_UCLC+1 bytes since the |
1405 | uppercase version may be longer than the original character (up to two |
1406 | characters). |
1407 | |
1408 | The first character of the uppercased version is returned |
1409 | (but note, as explained above, that there may be more.) |
1410 | |
1411 | =cut */ |
1412 | |
2104c8d9 |
1413 | UV |
983ffd37 |
1414 | Perl_to_utf8_upper(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1415 | { |
983ffd37 |
1416 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1417 | &PL_utf8_toupper, "ToUpper", "utf8::ToSpecUpper"); |
983ffd37 |
1418 | } |
a0ed51b3 |
1419 | |
d3e79532 |
1420 | /* |
1421 | =for apidoc A|UV|to_utf8_title|U8 *p|U8 *ustrp|STRLEN *lenp |
1422 | |
1423 | Convert the UTF-8 encoded character at p to its titlecase version and |
1424 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
1425 | that the ustrp needs to be at least UTF8_MAXLEN_UCLC+1 bytes since the |
1426 | titlecase version may be longer than the original character (up to two |
1427 | characters). |
1428 | |
1429 | The first character of the titlecased version is returned |
1430 | (but note, as explained above, that there may be more.) |
1431 | |
1432 | =cut */ |
1433 | |
983ffd37 |
1434 | UV |
1435 | Perl_to_utf8_title(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
1436 | { |
1437 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1438 | &PL_utf8_totitle, "ToTitle", "utf8::ToSpecTitle"); |
a0ed51b3 |
1439 | } |
1440 | |
d3e79532 |
1441 | /* |
1442 | =for apidoc A|UV|to_utf8_lower|U8 *p|U8 *ustrp|STRLEN *lenp |
1443 | |
1444 | Convert the UTF-8 encoded character at p to its lowercase version and |
1445 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
1446 | that the ustrp needs to be at least UTF8_MAXLEN_UCLC+1 bytes since the |
1447 | lowercase version may be longer than the original character (up to two |
1448 | characters). |
1449 | |
1450 | The first character of the lowercased version is returned |
1451 | (but note, as explained above, that there may be more.) |
1452 | |
1453 | =cut */ |
1454 | |
2104c8d9 |
1455 | UV |
a2a2844f |
1456 | Perl_to_utf8_lower(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1457 | { |
983ffd37 |
1458 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1459 | &PL_utf8_tolower, "ToLower", "utf8::ToSpecLower"); |
1460 | } |
1461 | |
d3e79532 |
1462 | /* |
1463 | =for apidoc A|UV|to_utf8_fold|U8 *p|U8 *ustrp|STRLEN *lenp |
1464 | |
1465 | Convert the UTF-8 encoded character at p to its foldcase version and |
1466 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
1467 | that the ustrp needs to be at least UTF8_MAXLEN_FOLD+1 bytes since the |
1468 | foldcase version may be longer than the original character (up to |
1469 | three characters). |
1470 | |
1471 | The first character of the foldcased version is returned |
1472 | (but note, as explained above, that there may be more.) |
1473 | |
1474 | =cut */ |
1475 | |
b4e400f9 |
1476 | UV |
1477 | Perl_to_utf8_fold(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp) |
1478 | { |
1479 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
1480 | &PL_utf8_tofold, "ToFold", "utf8::ToSpecFold"); |
a0ed51b3 |
1481 | } |
1482 | |
1483 | /* a "swash" is a swatch hash */ |
1484 | |
1485 | SV* |
864dbfa3 |
1486 | Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 |
1487 | { |
1488 | SV* retval; |
bf1fed83 |
1489 | SV* tokenbufsv = sv_2mortal(NEWSV(0,0)); |
8e84507e |
1490 | dSP; |
1b026014 |
1491 | HV *stash = gv_stashpvn(pkg, strlen(pkg), FALSE); |
f8be5cf0 |
1492 | SV* errsv_save; |
ce3b816e |
1493 | |
1b026014 |
1494 | if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */ |
ce3b816e |
1495 | ENTER; |
f8be5cf0 |
1496 | errsv_save = newSVsv(ERRSV); |
ce3b816e |
1497 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv); |
f8be5cf0 |
1498 | if (!SvTRUE(ERRSV)) |
1499 | sv_setsv(ERRSV, errsv_save); |
1500 | SvREFCNT_dec(errsv_save); |
ce3b816e |
1501 | LEAVE; |
1502 | } |
1503 | SPAGAIN; |
a0ed51b3 |
1504 | PUSHSTACKi(PERLSI_MAGIC); |
1505 | PUSHMARK(SP); |
1506 | EXTEND(SP,5); |
1507 | PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg)))); |
1508 | PUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
1509 | PUSHs(listsv); |
1510 | PUSHs(sv_2mortal(newSViv(minbits))); |
1511 | PUSHs(sv_2mortal(newSViv(none))); |
1512 | PUTBACK; |
1513 | ENTER; |
1514 | SAVEI32(PL_hints); |
1515 | PL_hints = 0; |
1516 | save_re_context(); |
bf1fed83 |
1517 | if (PL_curcop == &PL_compiling) |
1518 | /* XXX ought to be handled by lex_start */ |
1519 | sv_setpv(tokenbufsv, PL_tokenbuf); |
f8be5cf0 |
1520 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1521 | if (call_method("SWASHNEW", G_SCALAR)) |
8e84507e |
1522 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1523 | else |
e24b16f9 |
1524 | retval = &PL_sv_undef; |
f8be5cf0 |
1525 | if (!SvTRUE(ERRSV)) |
1526 | sv_setsv(ERRSV, errsv_save); |
1527 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1528 | LEAVE; |
1529 | POPSTACK; |
e24b16f9 |
1530 | if (PL_curcop == &PL_compiling) { |
bf1fed83 |
1531 | STRLEN len; |
1532 | char* pv = SvPV(tokenbufsv, len); |
1533 | |
1534 | Copy(pv, PL_tokenbuf, len+1, char); |
e24b16f9 |
1535 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1536 | } |
bc45ce41 |
1537 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) { |
1538 | if (SvPOK(retval)) |
1539 | Perl_croak(aTHX_ "Can't find Unicode property definition \"%s\"", |
1540 | SvPV_nolen(retval)); |
cea2e8a9 |
1541 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
bc45ce41 |
1542 | } |
a0ed51b3 |
1543 | return retval; |
1544 | } |
1545 | |
035d37be |
1546 | |
1547 | /* This API is wrong for special case conversions since we may need to |
1548 | * return several Unicode characters for a single Unicode character |
1549 | * (see lib/unicore/SpecCase.txt) The SWASHGET in lib/utf8_heavy.pl is |
1550 | * the lower-level routine, and it is similarly broken for returning |
1551 | * multiple values. --jhi */ |
a0ed51b3 |
1552 | UV |
3568d838 |
1553 | Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr, bool do_utf8) |
a0ed51b3 |
1554 | { |
1555 | HV* hv = (HV*)SvRV(sv); |
3568d838 |
1556 | U32 klen; |
1557 | U32 off; |
a0ed51b3 |
1558 | STRLEN slen; |
7d85a32c |
1559 | STRLEN needents; |
4ea42e7f |
1560 | U8 *tmps = NULL; |
a0ed51b3 |
1561 | U32 bit; |
1562 | SV *retval; |
3568d838 |
1563 | U8 tmputf8[2]; |
1564 | UV c = NATIVE_TO_ASCII(*ptr); |
1565 | |
1566 | if (!do_utf8 && !UNI_IS_INVARIANT(c)) { |
1567 | tmputf8[0] = UTF8_EIGHT_BIT_HI(c); |
1568 | tmputf8[1] = UTF8_EIGHT_BIT_LO(c); |
1569 | ptr = tmputf8; |
1570 | } |
1571 | /* Given a UTF-X encoded char 0xAA..0xYY,0xZZ |
1572 | * then the "swatch" is a vec() for al the chars which start |
1573 | * with 0xAA..0xYY |
1574 | * So the key in the hash (klen) is length of encoded char -1 |
1575 | */ |
1576 | klen = UTF8SKIP(ptr) - 1; |
1577 | off = ptr[klen]; |
a0ed51b3 |
1578 | |
7d85a32c |
1579 | if (klen == 0) |
1580 | { |
1581 | /* If char in invariant then swatch is for all the invariant chars |
1582 | * In both UTF-8 and UTF8-MOD that happens to be UTF_CONTINUATION_MARK |
1583 | */ |
1584 | needents = UTF_CONTINUATION_MARK; |
1585 | off = NATIVE_TO_UTF(ptr[klen]); |
1586 | } |
1587 | else |
1588 | { |
1589 | /* If char is encoded then swatch is for the prefix */ |
1590 | needents = (1 << UTF_ACCUMULATION_SHIFT); |
1591 | off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK; |
1592 | } |
1593 | |
a0ed51b3 |
1594 | /* |
1595 | * This single-entry cache saves about 1/3 of the utf8 overhead in test |
1596 | * suite. (That is, only 7-8% overall over just a hash cache. Still, |
1597 | * it's nothing to sniff at.) Pity we usually come through at least |
1598 | * two function calls to get here... |
1599 | * |
1600 | * NB: this code assumes that swatches are never modified, once generated! |
1601 | */ |
1602 | |
3568d838 |
1603 | if (hv == PL_last_swash_hv && |
a0ed51b3 |
1604 | klen == PL_last_swash_klen && |
3568d838 |
1605 | (!klen || memEQ((char *)ptr, (char *)PL_last_swash_key, klen)) ) |
a0ed51b3 |
1606 | { |
1607 | tmps = PL_last_swash_tmps; |
1608 | slen = PL_last_swash_slen; |
1609 | } |
1610 | else { |
1611 | /* Try our second-level swatch cache, kept in a hash. */ |
dfe13c55 |
1612 | SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE); |
a0ed51b3 |
1613 | |
1614 | /* If not cached, generate it via utf8::SWASHGET */ |
dfe13c55 |
1615 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
a0ed51b3 |
1616 | dSP; |
2b9d42f0 |
1617 | /* We use utf8n_to_uvuni() as we want an index into |
1618 | Unicode tables, not a native character number. |
1619 | */ |
872c91ae |
1620 | UV code_point = utf8n_to_uvuni(ptr, UTF8_MAXLEN, 0, |
1621 | ckWARN(WARN_UTF8) ? |
1622 | 0 : UTF8_ALLOW_ANY); |
f8be5cf0 |
1623 | SV *errsv_save; |
a0ed51b3 |
1624 | ENTER; |
1625 | SAVETMPS; |
1626 | save_re_context(); |
1627 | PUSHSTACKi(PERLSI_MAGIC); |
1628 | PUSHMARK(SP); |
1629 | EXTEND(SP,3); |
1630 | PUSHs((SV*)sv); |
ffbc6a93 |
1631 | /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */ |
3568d838 |
1632 | PUSHs(sv_2mortal(newSViv((klen) ? |
1633 | (code_point & ~(needents - 1)) : 0))); |
a0ed51b3 |
1634 | PUSHs(sv_2mortal(newSViv(needents))); |
1635 | PUTBACK; |
f8be5cf0 |
1636 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1637 | if (call_method("SWASHGET", G_SCALAR)) |
8e84507e |
1638 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1639 | else |
e24b16f9 |
1640 | retval = &PL_sv_undef; |
f8be5cf0 |
1641 | if (!SvTRUE(ERRSV)) |
1642 | sv_setsv(ERRSV, errsv_save); |
1643 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1644 | POPSTACK; |
1645 | FREETMPS; |
1646 | LEAVE; |
e24b16f9 |
1647 | if (PL_curcop == &PL_compiling) |
1648 | PL_curcop->op_private = PL_hints; |
a0ed51b3 |
1649 | |
dfe13c55 |
1650 | svp = hv_store(hv, (char*)ptr, klen, retval, 0); |
a0ed51b3 |
1651 | |
7d85a32c |
1652 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || (slen << 3) < needents) |
cea2e8a9 |
1653 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 |
1654 | } |
1655 | |
1656 | PL_last_swash_hv = hv; |
1657 | PL_last_swash_klen = klen; |
1658 | PL_last_swash_tmps = tmps; |
1659 | PL_last_swash_slen = slen; |
1660 | if (klen) |
1661 | Copy(ptr, PL_last_swash_key, klen, U8); |
1662 | } |
1663 | |
9faf8d75 |
1664 | switch ((int)((slen << 3) / needents)) { |
a0ed51b3 |
1665 | case 1: |
1666 | bit = 1 << (off & 7); |
1667 | off >>= 3; |
1668 | return (tmps[off] & bit) != 0; |
1669 | case 8: |
1670 | return tmps[off]; |
1671 | case 16: |
1672 | off <<= 1; |
1673 | return (tmps[off] << 8) + tmps[off + 1] ; |
1674 | case 32: |
1675 | off <<= 2; |
1676 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; |
1677 | } |
cea2e8a9 |
1678 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 |
1679 | return 0; |
1680 | } |
2b9d42f0 |
1681 | |
1682 | |
1683 | /* |
37607a96 |
1684 | =for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv |
2b9d42f0 |
1685 | |
1686 | Adds the UTF8 representation of the Native codepoint C<uv> to the end |
1687 | of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free |
1688 | bytes available. The return value is the pointer to the byte after the |
1689 | end of the new character. In other words, |
1690 | |
1691 | d = uvchr_to_utf8(d, uv); |
1692 | |
1693 | is the recommended wide native character-aware way of saying |
1694 | |
1695 | *(d++) = uv; |
1696 | |
1697 | =cut |
1698 | */ |
1699 | |
1700 | /* On ASCII machines this is normally a macro but we want a |
1701 | real function in case XS code wants it |
1702 | */ |
1703 | #undef Perl_uvchr_to_utf8 |
1704 | U8 * |
1705 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) |
1706 | { |
b851fbc1 |
1707 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), 0); |
2b9d42f0 |
1708 | } |
1709 | |
b851fbc1 |
1710 | U8 * |
1711 | Perl_uvchr_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags) |
1712 | { |
1713 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), flags); |
1714 | } |
2b9d42f0 |
1715 | |
1716 | /* |
37607a96 |
1717 | =for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
2b9d42f0 |
1718 | |
1719 | Returns the native character value of the first character in the string C<s> |
1720 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
1721 | length, in bytes, of that character. |
1722 | |
1723 | Allows length and flags to be passed to low level routine. |
1724 | |
1725 | =cut |
1726 | */ |
0a2ef054 |
1727 | /* On ASCII machines this is normally a macro but we want |
1728 | a real function in case XS code wants it |
2b9d42f0 |
1729 | */ |
1730 | #undef Perl_utf8n_to_uvchr |
1731 | UV |
37607a96 |
1732 | Perl_utf8n_to_uvchr(pTHX_ U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
2b9d42f0 |
1733 | { |
1734 | UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); |
1735 | return UNI_TO_NATIVE(uv); |
1736 | } |
1737 | |
d2cc3551 |
1738 | /* |
1739 | =for apidoc A|char *|pv_uni_display|SV *dsv|U8 *spv|STRLEN len|STRLEN pvlim|UV flags |
1740 | |
1741 | Build to the scalar dsv a displayable version of the string spv, |
1742 | length len, the displayable version being at most pvlim bytes long |
1743 | (if longer, the rest is truncated and "..." will be appended). |
0a2ef054 |
1744 | |
9e55ce06 |
1745 | The flags argument can have UNI_DISPLAY_ISPRINT set to display |
00e86452 |
1746 | isPRINT()able characters as themselves, UNI_DISPLAY_BACKSLASH |
0a2ef054 |
1747 | to display the \\[nrfta\\] as the backslashed versions (like '\n') |
1748 | (UNI_DISPLAY_BACKSLASH is preferred over UNI_DISPLAY_ISPRINT for \\). |
1749 | UNI_DISPLAY_QQ (and its alias UNI_DISPLAY_REGEX) have both |
1750 | UNI_DISPLAY_BACKSLASH and UNI_DISPLAY_ISPRINT turned on. |
1751 | |
d2cc3551 |
1752 | The pointer to the PV of the dsv is returned. |
1753 | |
1754 | =cut */ |
e6b2e755 |
1755 | char * |
1756 | Perl_pv_uni_display(pTHX_ SV *dsv, U8 *spv, STRLEN len, STRLEN pvlim, UV flags) |
1757 | { |
1758 | int truncated = 0; |
1759 | char *s, *e; |
1760 | |
1761 | sv_setpvn(dsv, "", 0); |
1762 | for (s = (char *)spv, e = s + len; s < e; s += UTF8SKIP(s)) { |
1763 | UV u; |
c728cb41 |
1764 | bool ok = FALSE; |
1765 | |
e6b2e755 |
1766 | if (pvlim && SvCUR(dsv) >= pvlim) { |
1767 | truncated++; |
1768 | break; |
1769 | } |
1770 | u = utf8_to_uvchr((U8*)s, 0); |
c728cb41 |
1771 | if (u < 256) { |
c728cb41 |
1772 | if (!ok && (flags & UNI_DISPLAY_BACKSLASH)) { |
1773 | switch (u & 0xFF) { |
1774 | case '\n': |
1775 | Perl_sv_catpvf(aTHX_ dsv, "\\n"); ok = TRUE; break; |
1776 | case '\r': |
1777 | Perl_sv_catpvf(aTHX_ dsv, "\\r"); ok = TRUE; break; |
1778 | case '\t': |
1779 | Perl_sv_catpvf(aTHX_ dsv, "\\t"); ok = TRUE; break; |
1780 | case '\f': |
1781 | Perl_sv_catpvf(aTHX_ dsv, "\\f"); ok = TRUE; break; |
1782 | case '\a': |
1783 | Perl_sv_catpvf(aTHX_ dsv, "\\a"); ok = TRUE; break; |
1784 | case '\\': |
d79a7a3d |
1785 | Perl_sv_catpvf(aTHX_ dsv, "\\\\" ); ok = TRUE; break; |
c728cb41 |
1786 | default: break; |
1787 | } |
1788 | } |
00e86452 |
1789 | /* isPRINT() is the locale-blind version. */ |
1790 | if (!ok && (flags & UNI_DISPLAY_ISPRINT) && isPRINT(u & 0xFF)) { |
2c4547fe |
1791 | Perl_sv_catpvf(aTHX_ dsv, "%c", (char)(u & 0xFF)); |
0a2ef054 |
1792 | ok = TRUE; |
1793 | } |
c728cb41 |
1794 | } |
1795 | if (!ok) |
9e55ce06 |
1796 | Perl_sv_catpvf(aTHX_ dsv, "\\x{%"UVxf"}", u); |
e6b2e755 |
1797 | } |
1798 | if (truncated) |
1799 | sv_catpvn(dsv, "...", 3); |
1800 | |
1801 | return SvPVX(dsv); |
1802 | } |
2b9d42f0 |
1803 | |
d2cc3551 |
1804 | /* |
1805 | =for apidoc A|char *|sv_uni_display|SV *dsv|SV *ssv|STRLEN pvlim|UV flags |
1806 | |
1807 | Build to the scalar dsv a displayable version of the scalar sv, |
0a2ef054 |
1808 | the displayable version being at most pvlim bytes long |
d2cc3551 |
1809 | (if longer, the rest is truncated and "..." will be appended). |
0a2ef054 |
1810 | |
1811 | The flags argument is as in pv_uni_display(). |
1812 | |
d2cc3551 |
1813 | The pointer to the PV of the dsv is returned. |
1814 | |
1815 | =cut */ |
e6b2e755 |
1816 | char * |
1817 | Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags) |
1818 | { |
701a277b |
1819 | return Perl_pv_uni_display(aTHX_ dsv, (U8*)SvPVX(ssv), SvCUR(ssv), |
1820 | pvlim, flags); |
1821 | } |
1822 | |
d2cc3551 |
1823 | /* |
d07ddd77 |
1824 | =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 |
1825 | |
1826 | Return true if the strings s1 and s2 differ case-insensitively, false |
1827 | if not (if they are equal case-insensitively). If u1 is true, the |
1828 | string s1 is assumed to be in UTF-8-encoded Unicode. If u2 is true, |
d07ddd77 |
1829 | the string s2 is assumed to be in UTF-8-encoded Unicode. If u1 or u2 |
1830 | are false, the respective string is assumed to be in native 8-bit |
1831 | encoding. |
1832 | |
1833 | If the pe1 and pe2 are non-NULL, the scanning pointers will be copied |
1834 | in there (they will point at the beginning of the I<next> character). |
1835 | If the pointers behind pe1 or pe2 are non-NULL, they are the end |
1836 | pointers beyond which scanning will not continue under any |
1837 | circustances. If the byte lengths l1 and l2 are non-zero, s1+l1 and |
1838 | s2+l2 will be used as goal end pointers that will also stop the scan, |
1839 | and which qualify towards defining a successful match: all the scans |
1840 | that define an explicit length must reach their goal pointers for |
1841 | a match to succeed). |
d2cc3551 |
1842 | |
1843 | For case-insensitiveness, the "casefolding" of Unicode is used |
1844 | instead of upper/lowercasing both the characters, see |
1845 | http://www.unicode.org/unicode/reports/tr21/ (Case Mappings). |
1846 | |
1847 | =cut */ |
701a277b |
1848 | I32 |
d07ddd77 |
1849 | 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 |
1850 | { |
5469e704 |
1851 | register U8 *p1 = (U8*)s1; |
1852 | register U8 *p2 = (U8*)s2; |
d07ddd77 |
1853 | register U8 *e1 = 0, *f1 = 0, *q1 = 0; |
1854 | register U8 *e2 = 0, *f2 = 0, *q2 = 0; |
1855 | STRLEN n1 = 0, n2 = 0; |
ffce6cc2 |
1856 | U8 foldbuf1[UTF8_MAXLEN_FOLD+1]; |
1857 | U8 foldbuf2[UTF8_MAXLEN_FOLD+1]; |
d7f013c8 |
1858 | U8 natbuf[1+1]; |
1859 | STRLEN foldlen1, foldlen2; |
d07ddd77 |
1860 | bool match; |
332ddc25 |
1861 | |
d07ddd77 |
1862 | if (pe1) |
1863 | e1 = *(U8**)pe1; |
1864 | if (e1 == 0 || (l1 && l1 < e1 - (U8*)s1)) |
1865 | f1 = (U8*)s1 + l1; |
1866 | if (pe2) |
1867 | e2 = *(U8**)pe2; |
1868 | if (e2 == 0 || (l2 && l2 < e2 - (U8*)s2)) |
1869 | f2 = (U8*)s2 + l2; |
1870 | |
1871 | if ((e1 == 0 && f1 == 0) || (e2 == 0 && f2 == 0) || (f1 == 0 && f2 == 0)) |
1872 | return 1; /* mismatch; possible infinite loop or false positive */ |
1873 | |
a6872d42 |
1874 | if (!u1 || !u2) |
1875 | natbuf[1] = 0; /* Need to terminate the buffer. */ |
1876 | |
d07ddd77 |
1877 | while ((e1 == 0 || p1 < e1) && |
1878 | (f1 == 0 || p1 < f1) && |
1879 | (e2 == 0 || p2 < e2) && |
1880 | (f2 == 0 || p2 < f2)) { |
1881 | if (n1 == 0) { |
d7f013c8 |
1882 | if (u1) |
1883 | to_utf8_fold(p1, foldbuf1, &foldlen1); |
1884 | else { |
f5cee151 |
1885 | natbuf[0] = *p1; |
d7f013c8 |
1886 | to_utf8_fold(natbuf, foldbuf1, &foldlen1); |
1887 | } |
1888 | q1 = foldbuf1; |
d07ddd77 |
1889 | n1 = foldlen1; |
332ddc25 |
1890 | } |
d07ddd77 |
1891 | if (n2 == 0) { |
d7f013c8 |
1892 | if (u2) |
1893 | to_utf8_fold(p2, foldbuf2, &foldlen2); |
1894 | else { |
f5cee151 |
1895 | natbuf[0] = *p2; |
d7f013c8 |
1896 | to_utf8_fold(natbuf, foldbuf2, &foldlen2); |
1897 | } |
1898 | q2 = foldbuf2; |
d07ddd77 |
1899 | n2 = foldlen2; |
332ddc25 |
1900 | } |
d07ddd77 |
1901 | while (n1 && n2) { |
1902 | if ( UTF8SKIP(q1) != UTF8SKIP(q2) || |
1903 | (UTF8SKIP(q1) == 1 && *q1 != *q2) || |
1904 | memNE((char*)q1, (char*)q2, UTF8SKIP(q1)) ) |
d7f013c8 |
1905 | return 1; /* mismatch */ |
d07ddd77 |
1906 | n1 -= UTF8SKIP(q1); |
d7f013c8 |
1907 | q1 += UTF8SKIP(q1); |
d07ddd77 |
1908 | n2 -= UTF8SKIP(q2); |
d7f013c8 |
1909 | q2 += UTF8SKIP(q2); |
701a277b |
1910 | } |
d07ddd77 |
1911 | if (n1 == 0) |
d7f013c8 |
1912 | p1 += u1 ? UTF8SKIP(p1) : 1; |
d07ddd77 |
1913 | if (n2 == 0) |
d7f013c8 |
1914 | p2 += u2 ? UTF8SKIP(p2) : 1; |
1915 | |
d2cc3551 |
1916 | } |
5469e704 |
1917 | |
d07ddd77 |
1918 | /* A match is defined by all the scans that specified |
1919 | * an explicit length reaching their final goals. */ |
1920 | match = (f1 == 0 || p1 == f1) && (f2 == 0 || p2 == f2); |
5469e704 |
1921 | |
1922 | if (match) { |
d07ddd77 |
1923 | if (pe1) |
1924 | *pe1 = (char*)p1; |
1925 | if (pe2) |
1926 | *pe2 = (char*)p2; |
5469e704 |
1927 | } |
1928 | |
1929 | return match ? 0 : 1; /* 0 match, 1 mismatch */ |
e6b2e755 |
1930 | } |
701a277b |
1931 | |