Commit | Line | Data |
a0ed51b3 |
1 | /* utf8.c |
2 | * |
af3babe4 |
3 | * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and |
4 | * others |
a0ed51b3 |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. |
8 | * |
9 | */ |
10 | |
11 | /* |
12 | * 'What a fix!' said Sam. 'That's the one place in all the lands we've ever |
13 | * heard of that we don't want to see any closer; and that's the one place |
14 | * we're trying to get to! And that's just where we can't get, nohow.' |
15 | * |
16 | * 'Well do I understand your speech,' he answered in the same language; |
17 | * 'yet few strangers do so. Why then do you not speak in the Common Tongue, |
18 | * as is the custom in the West, if you wish to be answered?' |
19 | * |
20 | * ...the travellers perceived that the floor was paved with stones of many |
21 | * hues; branching runes and strange devices intertwined beneath their feet. |
22 | */ |
23 | |
24 | #include "EXTERN.h" |
864dbfa3 |
25 | #define PERL_IN_UTF8_C |
a0ed51b3 |
26 | #include "perl.h" |
27 | |
27da23d5 |
28 | static const char unees[] = |
29 | "Malformed UTF-8 character (unexpected end of string)"; |
901b21bf |
30 | |
ccfc67b7 |
31 | /* |
32 | =head1 Unicode Support |
a0ed51b3 |
33 | |
166f8a29 |
34 | This file contains various utility functions for manipulating UTF8-encoded |
35 | strings. For the uninitiated, this is a method of representing arbitrary |
61296642 |
36 | Unicode characters as a variable number of bytes, in such a way that |
56da48f7 |
37 | characters in the ASCII range are unmodified, and a zero byte never appears |
38 | within non-zero characters. |
166f8a29 |
39 | |
b851fbc1 |
40 | =for apidoc A|U8 *|uvuni_to_utf8_flags|U8 *d|UV uv|UV flags |
eebe1485 |
41 | |
1e54db1a |
42 | Adds the UTF-8 representation of the Unicode codepoint C<uv> to the end |
89ebb4a3 |
43 | of the string C<d>; C<d> should be have at least C<UTF8_MAXBYTES+1> free |
eebe1485 |
44 | bytes available. The return value is the pointer to the byte after the |
9041c2e3 |
45 | end of the new character. In other words, |
eebe1485 |
46 | |
b851fbc1 |
47 | d = uvuni_to_utf8_flags(d, uv, flags); |
48 | |
49 | or, in most cases, |
50 | |
9041c2e3 |
51 | d = uvuni_to_utf8(d, uv); |
eebe1485 |
52 | |
b851fbc1 |
53 | (which is equivalent to) |
54 | |
55 | d = uvuni_to_utf8_flags(d, uv, 0); |
56 | |
eebe1485 |
57 | is the recommended Unicode-aware way of saying |
58 | |
59 | *(d++) = uv; |
60 | |
61 | =cut |
62 | */ |
63 | |
dfe13c55 |
64 | U8 * |
b851fbc1 |
65 | Perl_uvuni_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags) |
a0ed51b3 |
66 | { |
62961d2e |
67 | if (ckWARN(WARN_UTF8)) { |
b851fbc1 |
68 | if (UNICODE_IS_SURROGATE(uv) && |
69 | !(flags & UNICODE_ALLOW_SURROGATE)) |
9014280d |
70 | Perl_warner(aTHX_ packWARN(WARN_UTF8), "UTF-16 surrogate 0x%04"UVxf, uv); |
b851fbc1 |
71 | else if ( |
72 | ((uv >= 0xFDD0 && uv <= 0xFDEF && |
73 | !(flags & UNICODE_ALLOW_FDD0)) |
74 | || |
c867b360 |
75 | ((uv & 0xFFFE) == 0xFFFE && /* Either FFFE or FFFF. */ |
b851fbc1 |
76 | !(flags & UNICODE_ALLOW_FFFF))) && |
77 | /* UNICODE_ALLOW_SUPER includes |
2a20b9da |
78 | * FFFEs and FFFFs beyond 0x10FFFF. */ |
b851fbc1 |
79 | ((uv <= PERL_UNICODE_MAX) || |
80 | !(flags & UNICODE_ALLOW_SUPER)) |
81 | ) |
9014280d |
82 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
507b9800 |
83 | "Unicode character 0x%04"UVxf" is illegal", uv); |
84 | } |
c4d5f83a |
85 | if (UNI_IS_INVARIANT(uv)) { |
eb160463 |
86 | *d++ = (U8)UTF_TO_NATIVE(uv); |
a0ed51b3 |
87 | return d; |
88 | } |
2d331972 |
89 | #if defined(EBCDIC) |
1d72bdf6 |
90 | else { |
91 | STRLEN len = UNISKIP(uv); |
92 | U8 *p = d+len-1; |
93 | while (p > d) { |
eb160463 |
94 | *p-- = (U8)UTF_TO_NATIVE((uv & UTF_CONTINUATION_MASK) | UTF_CONTINUATION_MARK); |
1d72bdf6 |
95 | uv >>= UTF_ACCUMULATION_SHIFT; |
96 | } |
eb160463 |
97 | *p = (U8)UTF_TO_NATIVE((uv & UTF_START_MASK(len)) | UTF_START_MARK(len)); |
1d72bdf6 |
98 | return d+len; |
99 | } |
100 | #else /* Non loop style */ |
a0ed51b3 |
101 | if (uv < 0x800) { |
eb160463 |
102 | *d++ = (U8)(( uv >> 6) | 0xc0); |
103 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
104 | return d; |
105 | } |
106 | if (uv < 0x10000) { |
eb160463 |
107 | *d++ = (U8)(( uv >> 12) | 0xe0); |
108 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
109 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
110 | return d; |
111 | } |
112 | if (uv < 0x200000) { |
eb160463 |
113 | *d++ = (U8)(( uv >> 18) | 0xf0); |
114 | *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80); |
115 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
116 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
117 | return d; |
118 | } |
119 | if (uv < 0x4000000) { |
eb160463 |
120 | *d++ = (U8)(( uv >> 24) | 0xf8); |
121 | *d++ = (U8)(((uv >> 18) & 0x3f) | 0x80); |
122 | *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80); |
123 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
124 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
125 | return d; |
126 | } |
127 | if (uv < 0x80000000) { |
eb160463 |
128 | *d++ = (U8)(( uv >> 30) | 0xfc); |
129 | *d++ = (U8)(((uv >> 24) & 0x3f) | 0x80); |
130 | *d++ = (U8)(((uv >> 18) & 0x3f) | 0x80); |
131 | *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80); |
132 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
133 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
134 | return d; |
135 | } |
6b8eaf93 |
136 | #ifdef HAS_QUAD |
d7578b48 |
137 | if (uv < UTF8_QUAD_MAX) |
a0ed51b3 |
138 | #endif |
139 | { |
eb160463 |
140 | *d++ = 0xfe; /* Can't match U+FEFF! */ |
141 | *d++ = (U8)(((uv >> 30) & 0x3f) | 0x80); |
142 | *d++ = (U8)(((uv >> 24) & 0x3f) | 0x80); |
143 | *d++ = (U8)(((uv >> 18) & 0x3f) | 0x80); |
144 | *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80); |
145 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
146 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
147 | return d; |
148 | } |
6b8eaf93 |
149 | #ifdef HAS_QUAD |
a0ed51b3 |
150 | { |
eb160463 |
151 | *d++ = 0xff; /* Can't match U+FFFE! */ |
152 | *d++ = 0x80; /* 6 Reserved bits */ |
153 | *d++ = (U8)(((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */ |
154 | *d++ = (U8)(((uv >> 54) & 0x3f) | 0x80); |
155 | *d++ = (U8)(((uv >> 48) & 0x3f) | 0x80); |
156 | *d++ = (U8)(((uv >> 42) & 0x3f) | 0x80); |
157 | *d++ = (U8)(((uv >> 36) & 0x3f) | 0x80); |
158 | *d++ = (U8)(((uv >> 30) & 0x3f) | 0x80); |
159 | *d++ = (U8)(((uv >> 24) & 0x3f) | 0x80); |
160 | *d++ = (U8)(((uv >> 18) & 0x3f) | 0x80); |
161 | *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80); |
162 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
163 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
164 | return d; |
165 | } |
166 | #endif |
1d72bdf6 |
167 | #endif /* Loop style */ |
a0ed51b3 |
168 | } |
b851fbc1 |
169 | |
170 | U8 * |
171 | Perl_uvuni_to_utf8(pTHX_ U8 *d, UV uv) |
172 | { |
173 | return Perl_uvuni_to_utf8_flags(aTHX_ d, uv, 0); |
174 | } |
9041c2e3 |
175 | |
646ca15d |
176 | /* |
177 | |
178 | Tests if some arbitrary number of bytes begins in a valid UTF-8 |
179 | character. Note that an INVARIANT (i.e. ASCII) character is a valid |
180 | UTF-8 character. The actual number of bytes in the UTF-8 character |
181 | will be returned if it is valid, otherwise 0. |
182 | |
183 | This is the "slow" version as opposed to the "fast" version which is |
184 | the "unrolled" IS_UTF8_CHAR(). E.g. for t/uni/class.t the speed |
185 | difference is a factor of 2 to 3. For lengths (UTF8SKIP(s)) of four |
186 | or less you should use the IS_UTF8_CHAR(), for lengths of five or more |
187 | you should use the _slow(). In practice this means that the _slow() |
188 | will be used very rarely, since the maximum Unicode code point (as of |
189 | Unicode 4.1) is U+10FFFF, which encodes in UTF-8 to four bytes. Only |
190 | the "Perl extended UTF-8" (the infamous 'v-strings') will encode into |
191 | five bytes or more. |
192 | |
193 | =cut */ |
194 | STRLEN |
195 | S_is_utf8_char_slow(pTHX_ const U8 *s, const STRLEN len) |
196 | { |
197 | U8 u = *s; |
198 | STRLEN slen; |
199 | UV uv, ouv; |
200 | |
201 | if (UTF8_IS_INVARIANT(u)) |
202 | return 1; |
203 | |
204 | if (!UTF8_IS_START(u)) |
205 | return 0; |
206 | |
207 | if (len < 2 || !UTF8_IS_CONTINUATION(s[1])) |
208 | return 0; |
209 | |
210 | slen = len - 1; |
211 | s++; |
212 | u &= UTF_START_MASK(len); |
213 | uv = u; |
214 | ouv = uv; |
215 | while (slen--) { |
216 | if (!UTF8_IS_CONTINUATION(*s)) |
217 | return 0; |
218 | uv = UTF8_ACCUMULATE(uv, *s); |
219 | if (uv < ouv) |
220 | return 0; |
221 | ouv = uv; |
222 | s++; |
223 | } |
224 | |
225 | if ((STRLEN)UNISKIP(uv) < len) |
226 | return 0; |
227 | |
228 | return len; |
229 | } |
9041c2e3 |
230 | |
231 | /* |
7fc63493 |
232 | =for apidoc A|STRLEN|is_utf8_char|const U8 *s |
eebe1485 |
233 | |
5da9da9e |
234 | Tests if some arbitrary number of bytes begins in a valid UTF-8 |
82686b01 |
235 | character. Note that an INVARIANT (i.e. ASCII) character is a valid |
236 | UTF-8 character. The actual number of bytes in the UTF-8 character |
237 | will be returned if it is valid, otherwise 0. |
9041c2e3 |
238 | |
82686b01 |
239 | =cut */ |
067a85ef |
240 | STRLEN |
7fc63493 |
241 | Perl_is_utf8_char(pTHX_ const U8 *s) |
386d01d6 |
242 | { |
3b0fc154 |
243 | STRLEN len; |
244 | #ifdef IS_UTF8_CHAR |
9f07fdcd |
245 | len = UTF8SKIP(s); |
3b0fc154 |
246 | if (len <= 4) |
247 | return IS_UTF8_CHAR(s, len) ? len : 0; |
248 | #endif /* #ifdef IS_UTF8_CHAR */ |
2c0c5f92 |
249 | return is_utf8_char_slow(s, len); |
386d01d6 |
250 | } |
251 | |
6662521e |
252 | /* |
7fc63493 |
253 | =for apidoc A|bool|is_utf8_string|const U8 *s|STRLEN len |
6662521e |
254 | |
c9ada85f |
255 | Returns true if first C<len> bytes of the given string form a valid |
1e54db1a |
256 | UTF-8 string, false otherwise. Note that 'a valid UTF-8 string' does |
257 | not mean 'a string that contains code points above 0x7F encoded in UTF-8' |
258 | because a valid ASCII string is a valid UTF-8 string. |
6662521e |
259 | |
260 | =cut |
261 | */ |
262 | |
8e84507e |
263 | bool |
7fc63493 |
264 | Perl_is_utf8_string(pTHX_ const U8 *s, STRLEN len) |
6662521e |
265 | { |
7fc63493 |
266 | const U8* x = s; |
267 | const U8* send; |
067a85ef |
268 | |
61468b03 |
269 | if (!len && s) |
e1ec3a88 |
270 | len = strlen((const char *)s); |
1aa99e6b |
271 | send = s + len; |
272 | |
6662521e |
273 | while (x < send) { |
a3b680e6 |
274 | STRLEN c; |
1acdb0da |
275 | /* Inline the easy bits of is_utf8_char() here for speed... */ |
276 | if (UTF8_IS_INVARIANT(*x)) |
277 | c = 1; |
278 | else if (!UTF8_IS_START(*x)) |
279 | return FALSE; |
280 | else { |
281 | /* ... and call is_utf8_char() only if really needed. */ |
646ca15d |
282 | #ifdef IS_UTF8_CHAR |
283 | c = UTF8SKIP(x); |
284 | if (c <= 4) { |
285 | if (!IS_UTF8_CHAR(x, c)) |
286 | return FALSE; |
287 | } else { |
2c0c5f92 |
288 | if (!is_utf8_char_slow(x, c)) |
646ca15d |
289 | return FALSE; |
290 | } |
291 | #else |
292 | c = is_utf8_char(x); |
293 | #endif /* #ifdef IS_UTF8_CHAR */ |
1acdb0da |
294 | if (!c) |
295 | return FALSE; |
296 | } |
6662521e |
297 | x += c; |
6662521e |
298 | } |
60006e79 |
299 | if (x != send) |
300 | return FALSE; |
067a85ef |
301 | |
302 | return TRUE; |
6662521e |
303 | } |
304 | |
67e989fb |
305 | /* |
7fc63493 |
306 | =for apidoc A|bool|is_utf8_string_loc|const U8 *s|STRLEN len|const U8 **p |
81cd54e3 |
307 | |
308 | Like is_ut8_string but store the location of the failure in |
309 | the last argument. |
310 | |
311 | =cut |
312 | */ |
313 | |
314 | bool |
7fc63493 |
315 | Perl_is_utf8_string_loc(pTHX_ const U8 *s, STRLEN len, const U8 **p) |
81cd54e3 |
316 | { |
7fc63493 |
317 | const U8* x = s; |
318 | const U8* send; |
81cd54e3 |
319 | STRLEN c; |
320 | |
61468b03 |
321 | if (!len && s) |
e1ec3a88 |
322 | len = strlen((const char *)s); |
81cd54e3 |
323 | send = s + len; |
324 | |
325 | while (x < send) { |
326 | /* Inline the easy bits of is_utf8_char() here for speed... */ |
327 | if (UTF8_IS_INVARIANT(*x)) |
328 | c = 1; |
329 | else if (!UTF8_IS_START(*x)) { |
330 | if (p) |
331 | *p = x; |
332 | return FALSE; |
333 | } |
334 | else { |
335 | /* ... and call is_utf8_char() only if really needed. */ |
336 | c = is_utf8_char(x); |
337 | if (!c) { |
338 | if (p) |
339 | *p = x; |
340 | return FALSE; |
341 | } |
342 | } |
343 | x += c; |
344 | } |
345 | if (x != send) { |
346 | if (p) |
347 | *p = x; |
348 | return FALSE; |
349 | } |
350 | |
351 | return TRUE; |
352 | } |
353 | |
354 | /* |
7fc63493 |
355 | =for apidoc A|UV|utf8n_to_uvuni|const U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
67e989fb |
356 | |
9041c2e3 |
357 | Bottom level UTF-8 decode routine. |
358 | Returns the unicode code point value of the first character in the string C<s> |
1e54db1a |
359 | which is assumed to be in UTF-8 encoding and no longer than C<curlen>; |
7df053ec |
360 | C<retlen> will be set to the length, in bytes, of that character. |
67e989fb |
361 | |
1e54db1a |
362 | If C<s> does not point to a well-formed UTF-8 character, the behaviour |
dcad2880 |
363 | is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY, |
364 | it is assumed that the caller will raise a warning, and this function |
28d3d195 |
365 | will silently just set C<retlen> to C<-1> and return zero. If the |
366 | C<flags> does not contain UTF8_CHECK_ONLY, warnings about |
367 | malformations will be given, C<retlen> will be set to the expected |
368 | length of the UTF-8 character in bytes, and zero will be returned. |
369 | |
370 | The C<flags> can also contain various flags to allow deviations from |
371 | the strict UTF-8 encoding (see F<utf8.h>). |
67e989fb |
372 | |
9041c2e3 |
373 | Most code should use utf8_to_uvchr() rather than call this directly. |
374 | |
37607a96 |
375 | =cut |
376 | */ |
67e989fb |
377 | |
a0ed51b3 |
378 | UV |
7fc63493 |
379 | Perl_utf8n_to_uvuni(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
a0ed51b3 |
380 | { |
7fc63493 |
381 | const U8 *s0 = s; |
9c5ffd7c |
382 | UV uv = *s, ouv = 0; |
ba210ebe |
383 | STRLEN len = 1; |
7fc63493 |
384 | const bool dowarn = ckWARN_d(WARN_UTF8); |
385 | const UV startbyte = *s; |
ba210ebe |
386 | STRLEN expectlen = 0; |
a0dbb045 |
387 | U32 warning = 0; |
388 | |
389 | /* This list is a superset of the UTF8_ALLOW_XXX. */ |
390 | |
391 | #define UTF8_WARN_EMPTY 1 |
392 | #define UTF8_WARN_CONTINUATION 2 |
393 | #define UTF8_WARN_NON_CONTINUATION 3 |
394 | #define UTF8_WARN_FE_FF 4 |
395 | #define UTF8_WARN_SHORT 5 |
396 | #define UTF8_WARN_OVERFLOW 6 |
397 | #define UTF8_WARN_SURROGATE 7 |
c867b360 |
398 | #define UTF8_WARN_LONG 8 |
399 | #define UTF8_WARN_FFFF 9 /* Also FFFE. */ |
a0dbb045 |
400 | |
401 | if (curlen == 0 && |
402 | !(flags & UTF8_ALLOW_EMPTY)) { |
403 | warning = UTF8_WARN_EMPTY; |
0c443dc2 |
404 | goto malformed; |
405 | } |
406 | |
1d72bdf6 |
407 | if (UTF8_IS_INVARIANT(uv)) { |
a0ed51b3 |
408 | if (retlen) |
409 | *retlen = 1; |
c4d5f83a |
410 | return (UV) (NATIVE_TO_UTF(*s)); |
a0ed51b3 |
411 | } |
67e989fb |
412 | |
421a8bf2 |
413 | if (UTF8_IS_CONTINUATION(uv) && |
fcc8fcf6 |
414 | !(flags & UTF8_ALLOW_CONTINUATION)) { |
a0dbb045 |
415 | warning = UTF8_WARN_CONTINUATION; |
ba210ebe |
416 | goto malformed; |
417 | } |
418 | |
421a8bf2 |
419 | if (UTF8_IS_START(uv) && curlen > 1 && !UTF8_IS_CONTINUATION(s[1]) && |
fcc8fcf6 |
420 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
421 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
422 | goto malformed; |
423 | } |
9041c2e3 |
424 | |
1d72bdf6 |
425 | #ifdef EBCDIC |
75383841 |
426 | uv = NATIVE_TO_UTF(uv); |
1d72bdf6 |
427 | #else |
fcc8fcf6 |
428 | if ((uv == 0xfe || uv == 0xff) && |
429 | !(flags & UTF8_ALLOW_FE_FF)) { |
a0dbb045 |
430 | warning = UTF8_WARN_FE_FF; |
ba210ebe |
431 | goto malformed; |
a0ed51b3 |
432 | } |
1d72bdf6 |
433 | #endif |
434 | |
ba210ebe |
435 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
436 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } |
437 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } |
438 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } |
1d72bdf6 |
439 | #ifdef EBCDIC |
440 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
441 | else { len = 7; uv &= 0x01; } |
442 | #else |
ba210ebe |
443 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
444 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
1d72bdf6 |
445 | else { len = 13; uv = 0; } /* whoa! */ |
446 | #endif |
447 | |
a0ed51b3 |
448 | if (retlen) |
449 | *retlen = len; |
9041c2e3 |
450 | |
ba210ebe |
451 | expectlen = len; |
452 | |
fcc8fcf6 |
453 | if ((curlen < expectlen) && |
454 | !(flags & UTF8_ALLOW_SHORT)) { |
a0dbb045 |
455 | warning = UTF8_WARN_SHORT; |
ba210ebe |
456 | goto malformed; |
457 | } |
458 | |
459 | len--; |
a0ed51b3 |
460 | s++; |
ba210ebe |
461 | ouv = uv; |
462 | |
a0ed51b3 |
463 | while (len--) { |
421a8bf2 |
464 | if (!UTF8_IS_CONTINUATION(*s) && |
465 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
466 | s--; |
467 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
468 | goto malformed; |
a0ed51b3 |
469 | } |
470 | else |
8850bf83 |
471 | uv = UTF8_ACCUMULATE(uv, *s); |
a0dbb045 |
472 | if (!(uv > ouv)) { |
473 | /* These cannot be allowed. */ |
474 | if (uv == ouv) { |
75dbc644 |
475 | if (expectlen != 13 && !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 |
476 | warning = UTF8_WARN_LONG; |
477 | goto malformed; |
478 | } |
479 | } |
480 | else { /* uv < ouv */ |
481 | /* This cannot be allowed. */ |
482 | warning = UTF8_WARN_OVERFLOW; |
483 | goto malformed; |
484 | } |
ba210ebe |
485 | } |
486 | s++; |
487 | ouv = uv; |
488 | } |
489 | |
421a8bf2 |
490 | if (UNICODE_IS_SURROGATE(uv) && |
fcc8fcf6 |
491 | !(flags & UTF8_ALLOW_SURROGATE)) { |
a0dbb045 |
492 | warning = UTF8_WARN_SURROGATE; |
ba210ebe |
493 | goto malformed; |
eb160463 |
494 | } else if ((expectlen > (STRLEN)UNISKIP(uv)) && |
fcc8fcf6 |
495 | !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 |
496 | warning = UTF8_WARN_LONG; |
ba210ebe |
497 | goto malformed; |
421a8bf2 |
498 | } else if (UNICODE_IS_ILLEGAL(uv) && |
a9917092 |
499 | !(flags & UTF8_ALLOW_FFFF)) { |
a0dbb045 |
500 | warning = UTF8_WARN_FFFF; |
a9917092 |
501 | goto malformed; |
a0ed51b3 |
502 | } |
ba210ebe |
503 | |
a0ed51b3 |
504 | return uv; |
ba210ebe |
505 | |
506 | malformed: |
507 | |
fcc8fcf6 |
508 | if (flags & UTF8_CHECK_ONLY) { |
ba210ebe |
509 | if (retlen) |
cc366d4b |
510 | *retlen = -1; |
ba210ebe |
511 | return 0; |
512 | } |
513 | |
a0dbb045 |
514 | if (dowarn) { |
515 | SV* sv = sv_2mortal(newSVpv("Malformed UTF-8 character ", 0)); |
516 | |
517 | switch (warning) { |
518 | case 0: /* Intentionally empty. */ break; |
519 | case UTF8_WARN_EMPTY: |
54667de8 |
520 | Perl_sv_catpv(aTHX_ sv, "(empty string)"); |
a0dbb045 |
521 | break; |
522 | case UTF8_WARN_CONTINUATION: |
097fb8e2 |
523 | Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf", with no preceding start byte)", uv); |
a0dbb045 |
524 | break; |
525 | case UTF8_WARN_NON_CONTINUATION: |
097fb8e2 |
526 | if (s == s0) |
527 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", immediately after start byte 0x%02"UVxf")", |
528 | (UV)s[1], startbyte); |
529 | else |
530 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", %d byte%s after start byte 0x%02"UVxf", expected %d bytes)", |
5d7488b2 |
531 | (UV)s[1], s - s0, s - s0 > 1 ? "s" : "", startbyte, (int)expectlen); |
097fb8e2 |
532 | |
a0dbb045 |
533 | break; |
534 | case UTF8_WARN_FE_FF: |
535 | Perl_sv_catpvf(aTHX_ sv, "(byte 0x%02"UVxf")", uv); |
536 | break; |
537 | case UTF8_WARN_SHORT: |
097fb8e2 |
538 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
5d7488b2 |
539 | (int)curlen, curlen == 1 ? "" : "s", (int)expectlen, startbyte); |
b31f83c2 |
540 | expectlen = curlen; /* distance for caller to skip */ |
a0dbb045 |
541 | break; |
542 | case UTF8_WARN_OVERFLOW: |
097fb8e2 |
543 | Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x, after start byte 0x%02"UVxf")", |
544 | ouv, *s, startbyte); |
a0dbb045 |
545 | break; |
546 | case UTF8_WARN_SURROGATE: |
547 | Perl_sv_catpvf(aTHX_ sv, "(UTF-16 surrogate 0x%04"UVxf")", uv); |
548 | break; |
a0dbb045 |
549 | case UTF8_WARN_LONG: |
097fb8e2 |
550 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
5d7488b2 |
551 | (int)expectlen, expectlen == 1 ? "": "s", UNISKIP(uv), startbyte); |
a0dbb045 |
552 | break; |
553 | case UTF8_WARN_FFFF: |
554 | Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv); |
555 | break; |
556 | default: |
54667de8 |
557 | Perl_sv_catpv(aTHX_ sv, "(unknown reason)"); |
a0dbb045 |
558 | break; |
559 | } |
560 | |
561 | if (warning) { |
504618e9 |
562 | const char *s = SvPVX_const(sv); |
a0dbb045 |
563 | |
564 | if (PL_op) |
9014280d |
565 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
53e06cf0 |
566 | "%s in %s", s, OP_DESC(PL_op)); |
a0dbb045 |
567 | else |
9014280d |
568 | Perl_warner(aTHX_ packWARN(WARN_UTF8), "%s", s); |
a0dbb045 |
569 | } |
570 | } |
571 | |
ba210ebe |
572 | if (retlen) |
28d3d195 |
573 | *retlen = expectlen ? expectlen : len; |
ba210ebe |
574 | |
28d3d195 |
575 | return 0; |
a0ed51b3 |
576 | } |
577 | |
8e84507e |
578 | /* |
7fc63493 |
579 | =for apidoc A|UV|utf8_to_uvchr|const U8 *s|STRLEN *retlen |
9041c2e3 |
580 | |
581 | Returns the native character value of the first character in the string C<s> |
1e54db1a |
582 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the |
9041c2e3 |
583 | length, in bytes, of that character. |
584 | |
1e54db1a |
585 | If C<s> does not point to a well-formed UTF-8 character, zero is |
9041c2e3 |
586 | returned and retlen is set, if possible, to -1. |
587 | |
588 | =cut |
589 | */ |
590 | |
591 | UV |
7fc63493 |
592 | Perl_utf8_to_uvchr(pTHX_ const U8 *s, STRLEN *retlen) |
9041c2e3 |
593 | { |
89ebb4a3 |
594 | return Perl_utf8n_to_uvchr(aTHX_ s, UTF8_MAXBYTES, retlen, |
872c91ae |
595 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
9041c2e3 |
596 | } |
597 | |
598 | /* |
7fc63493 |
599 | =for apidoc A|UV|utf8_to_uvuni|const U8 *s|STRLEN *retlen |
9041c2e3 |
600 | |
601 | Returns the Unicode code point of the first character in the string C<s> |
1e54db1a |
602 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the |
9041c2e3 |
603 | length, in bytes, of that character. |
604 | |
605 | This function should only be used when returned UV is considered |
606 | an index into the Unicode semantic tables (e.g. swashes). |
607 | |
1e54db1a |
608 | If C<s> does not point to a well-formed UTF-8 character, zero is |
ba210ebe |
609 | returned and retlen is set, if possible, to -1. |
8e84507e |
610 | |
611 | =cut |
612 | */ |
613 | |
614 | UV |
7fc63493 |
615 | Perl_utf8_to_uvuni(pTHX_ const U8 *s, STRLEN *retlen) |
8e84507e |
616 | { |
9041c2e3 |
617 | /* Call the low level routine asking for checks */ |
89ebb4a3 |
618 | return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXBYTES, retlen, |
872c91ae |
619 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
8e84507e |
620 | } |
621 | |
b76347f2 |
622 | /* |
35a4481c |
623 | =for apidoc A|STRLEN|utf8_length|const U8 *s|const U8 *e |
b76347f2 |
624 | |
625 | Return the length of the UTF-8 char encoded string C<s> in characters. |
02eb7b47 |
626 | Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end |
627 | up past C<e>, croaks. |
b76347f2 |
628 | |
629 | =cut |
630 | */ |
631 | |
632 | STRLEN |
35a4481c |
633 | Perl_utf8_length(pTHX_ const U8 *s, const U8 *e) |
b76347f2 |
634 | { |
635 | STRLEN len = 0; |
636 | |
8850bf83 |
637 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
638 | * the bitops (especially ~) can create illegal UTF-8. |
639 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
640 | |
a3b680e6 |
641 | if (e < s) |
642 | goto warn_and_return; |
b76347f2 |
643 | while (s < e) { |
4373e329 |
644 | const U8 t = UTF8SKIP(s); |
901b21bf |
645 | if (e - s < t) { |
a3b680e6 |
646 | warn_and_return: |
901b21bf |
647 | if (ckWARN_d(WARN_UTF8)) { |
648 | if (PL_op) |
649 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
a3b680e6 |
650 | "%s in %s", unees, OP_DESC(PL_op)); |
901b21bf |
651 | else |
652 | Perl_warner(aTHX_ packWARN(WARN_UTF8), unees); |
653 | } |
654 | return len; |
655 | } |
b76347f2 |
656 | s += t; |
657 | len++; |
658 | } |
659 | |
660 | return len; |
661 | } |
662 | |
b06226ff |
663 | /* |
35a4481c |
664 | =for apidoc A|IV|utf8_distance|const U8 *a|const U8 *b |
b06226ff |
665 | |
1e54db1a |
666 | Returns the number of UTF-8 characters between the UTF-8 pointers C<a> |
b06226ff |
667 | and C<b>. |
668 | |
669 | WARNING: use only if you *know* that the pointers point inside the |
670 | same UTF-8 buffer. |
671 | |
37607a96 |
672 | =cut |
673 | */ |
a0ed51b3 |
674 | |
02eb7b47 |
675 | IV |
35a4481c |
676 | Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b) |
a0ed51b3 |
677 | { |
02eb7b47 |
678 | IV off = 0; |
679 | |
8850bf83 |
680 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
681 | * the bitops (especially ~) can create illegal UTF-8. |
682 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
683 | |
a0ed51b3 |
684 | if (a < b) { |
685 | while (a < b) { |
35a4481c |
686 | const U8 c = UTF8SKIP(a); |
a3b680e6 |
687 | if (b - a < c) |
688 | goto warn_and_return; |
02eb7b47 |
689 | a += c; |
a0ed51b3 |
690 | off--; |
691 | } |
692 | } |
693 | else { |
694 | while (b < a) { |
4373e329 |
695 | const U8 c = UTF8SKIP(b); |
02eb7b47 |
696 | |
901b21bf |
697 | if (a - b < c) { |
a3b680e6 |
698 | warn_and_return: |
901b21bf |
699 | if (ckWARN_d(WARN_UTF8)) { |
700 | if (PL_op) |
701 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
702 | "%s in %s", unees, OP_DESC(PL_op)); |
703 | else |
704 | Perl_warner(aTHX_ packWARN(WARN_UTF8), unees); |
705 | } |
706 | return off; |
707 | } |
02eb7b47 |
708 | b += c; |
a0ed51b3 |
709 | off++; |
710 | } |
711 | } |
02eb7b47 |
712 | |
a0ed51b3 |
713 | return off; |
714 | } |
715 | |
b06226ff |
716 | /* |
37607a96 |
717 | =for apidoc A|U8 *|utf8_hop|U8 *s|I32 off |
b06226ff |
718 | |
8850bf83 |
719 | Return the UTF-8 pointer C<s> displaced by C<off> characters, either |
720 | forward or backward. |
b06226ff |
721 | |
722 | WARNING: do not use the following unless you *know* C<off> is within |
8850bf83 |
723 | the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned |
724 | on the first byte of character or just after the last byte of a character. |
b06226ff |
725 | |
37607a96 |
726 | =cut |
727 | */ |
a0ed51b3 |
728 | |
729 | U8 * |
4373e329 |
730 | Perl_utf8_hop(pTHX_ const U8 *s, I32 off) |
a0ed51b3 |
731 | { |
8850bf83 |
732 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g |
733 | * the bitops (especially ~) can create illegal UTF-8. |
734 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
735 | |
a0ed51b3 |
736 | if (off >= 0) { |
737 | while (off--) |
738 | s += UTF8SKIP(s); |
739 | } |
740 | else { |
741 | while (off++) { |
742 | s--; |
8850bf83 |
743 | while (UTF8_IS_CONTINUATION(*s)) |
744 | s--; |
a0ed51b3 |
745 | } |
746 | } |
4373e329 |
747 | return (U8 *)s; |
a0ed51b3 |
748 | } |
749 | |
6940069f |
750 | /* |
eebe1485 |
751 | =for apidoc A|U8 *|utf8_to_bytes|U8 *s|STRLEN *len |
6940069f |
752 | |
1e54db1a |
753 | Converts a string C<s> of length C<len> from UTF-8 into byte encoding. |
246fae53 |
754 | Unlike C<bytes_to_utf8>, this over-writes the original string, and |
755 | updates len to contain the new length. |
67e989fb |
756 | Returns zero on failure, setting C<len> to -1. |
6940069f |
757 | |
758 | =cut |
759 | */ |
760 | |
761 | U8 * |
37607a96 |
762 | Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len) |
6940069f |
763 | { |
6940069f |
764 | U8 *send; |
765 | U8 *d; |
dcad2880 |
766 | U8 *save = s; |
246fae53 |
767 | |
1e54db1a |
768 | /* ensure valid UTF-8 and chars < 256 before updating string */ |
dcad2880 |
769 | for (send = s + *len; s < send; ) { |
770 | U8 c = *s++; |
771 | |
1d72bdf6 |
772 | if (!UTF8_IS_INVARIANT(c) && |
773 | (!UTF8_IS_DOWNGRADEABLE_START(c) || (s >= send) |
774 | || !(c = *s++) || !UTF8_IS_CONTINUATION(c))) { |
dcad2880 |
775 | *len = -1; |
776 | return 0; |
777 | } |
246fae53 |
778 | } |
dcad2880 |
779 | |
780 | d = s = save; |
6940069f |
781 | while (s < send) { |
ed646e6e |
782 | STRLEN ulen; |
9041c2e3 |
783 | *d++ = (U8)utf8_to_uvchr(s, &ulen); |
ed646e6e |
784 | s += ulen; |
6940069f |
785 | } |
786 | *d = '\0'; |
246fae53 |
787 | *len = d - save; |
6940069f |
788 | return save; |
789 | } |
790 | |
791 | /* |
e1ec3a88 |
792 | =for apidoc A|U8 *|bytes_from_utf8|const U8 *s|STRLEN *len|bool *is_utf8 |
f9a63242 |
793 | |
1e54db1a |
794 | Converts a string C<s> of length C<len> from UTF-8 into byte encoding. |
35a4481c |
795 | Unlike C<utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to |
ef9edfd0 |
796 | the newly-created string, and updates C<len> to contain the new |
797 | length. Returns the original string if no conversion occurs, C<len> |
798 | is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to |
799 | 0 if C<s> is converted or contains all 7bit characters. |
f9a63242 |
800 | |
37607a96 |
801 | =cut |
802 | */ |
f9a63242 |
803 | |
804 | U8 * |
e1ec3a88 |
805 | Perl_bytes_from_utf8(pTHX_ const U8 *s, STRLEN *len, bool *is_utf8) |
f9a63242 |
806 | { |
f9a63242 |
807 | U8 *d; |
e1ec3a88 |
808 | const U8 *start = s; |
809 | const U8 *send; |
f9a63242 |
810 | I32 count = 0; |
811 | |
812 | if (!*is_utf8) |
73d840c0 |
813 | return (U8 *)start; |
f9a63242 |
814 | |
1e54db1a |
815 | /* ensure valid UTF-8 and chars < 256 before converting string */ |
f9a63242 |
816 | for (send = s + *len; s < send;) { |
e1ec3a88 |
817 | U8 c = *s++; |
1d72bdf6 |
818 | if (!UTF8_IS_INVARIANT(c)) { |
db42d148 |
819 | if (UTF8_IS_DOWNGRADEABLE_START(c) && s < send && |
820 | (c = *s++) && UTF8_IS_CONTINUATION(c)) |
821 | count++; |
822 | else |
73d840c0 |
823 | return (U8 *)start; |
db42d148 |
824 | } |
f9a63242 |
825 | } |
826 | |
827 | *is_utf8 = 0; |
828 | |
f9a63242 |
829 | Newz(801, d, (*len) - count + 1, U8); |
ef9edfd0 |
830 | s = start; start = d; |
f9a63242 |
831 | while (s < send) { |
832 | U8 c = *s++; |
c4d5f83a |
833 | if (!UTF8_IS_INVARIANT(c)) { |
834 | /* Then it is two-byte encoded */ |
835 | c = UTF8_ACCUMULATE(NATIVE_TO_UTF(c), *s++); |
836 | c = ASCII_TO_NATIVE(c); |
837 | } |
838 | *d++ = c; |
f9a63242 |
839 | } |
840 | *d = '\0'; |
841 | *len = d - start; |
73d840c0 |
842 | return (U8 *)start; |
f9a63242 |
843 | } |
844 | |
845 | /* |
35a4481c |
846 | =for apidoc A|U8 *|bytes_to_utf8|const U8 *s|STRLEN *len |
6940069f |
847 | |
1e54db1a |
848 | Converts a string C<s> of length C<len> from ASCII into UTF-8 encoding. |
6662521e |
849 | Returns a pointer to the newly-created string, and sets C<len> to |
850 | reflect the new length. |
6940069f |
851 | |
1e54db1a |
852 | If you want to convert to UTF-8 from other encodings than ASCII, |
c9ada85f |
853 | see sv_recode_to_utf8(). |
854 | |
497711e7 |
855 | =cut |
6940069f |
856 | */ |
857 | |
858 | U8* |
35a4481c |
859 | Perl_bytes_to_utf8(pTHX_ const U8 *s, STRLEN *len) |
6940069f |
860 | { |
35a4481c |
861 | const U8 * const send = s + (*len); |
6940069f |
862 | U8 *d; |
863 | U8 *dst; |
6940069f |
864 | |
6662521e |
865 | Newz(801, d, (*len) * 2 + 1, U8); |
6940069f |
866 | dst = d; |
867 | |
868 | while (s < send) { |
35a4481c |
869 | const UV uv = NATIVE_TO_ASCII(*s++); |
c4d5f83a |
870 | if (UNI_IS_INVARIANT(uv)) |
eb160463 |
871 | *d++ = (U8)UTF_TO_NATIVE(uv); |
6940069f |
872 | else { |
eb160463 |
873 | *d++ = (U8)UTF8_EIGHT_BIT_HI(uv); |
874 | *d++ = (U8)UTF8_EIGHT_BIT_LO(uv); |
6940069f |
875 | } |
876 | } |
877 | *d = '\0'; |
6662521e |
878 | *len = d-dst; |
6940069f |
879 | return dst; |
880 | } |
881 | |
a0ed51b3 |
882 | /* |
dea0fc0b |
883 | * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8. |
a0ed51b3 |
884 | * |
885 | * Destination must be pre-extended to 3/2 source. Do not use in-place. |
886 | * We optimize for native, for obvious reasons. */ |
887 | |
888 | U8* |
dea0fc0b |
889 | Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
890 | { |
dea0fc0b |
891 | U8* pend; |
892 | U8* dstart = d; |
893 | |
1de9afcd |
894 | if (bytelen == 1 && p[0] == 0) { /* Be understanding. */ |
895 | d[0] = 0; |
896 | *newlen = 1; |
897 | return d; |
898 | } |
899 | |
dea0fc0b |
900 | if (bytelen & 1) |
014ead4b |
901 | Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen %"UVf, (UV)bytelen); |
dea0fc0b |
902 | |
903 | pend = p + bytelen; |
904 | |
a0ed51b3 |
905 | while (p < pend) { |
dea0fc0b |
906 | UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */ |
907 | p += 2; |
a0ed51b3 |
908 | if (uv < 0x80) { |
eb160463 |
909 | *d++ = (U8)uv; |
a0ed51b3 |
910 | continue; |
911 | } |
912 | if (uv < 0x800) { |
eb160463 |
913 | *d++ = (U8)(( uv >> 6) | 0xc0); |
914 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
915 | continue; |
916 | } |
917 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ |
30f84f9e |
918 | UV low = (p[0] << 8) + p[1]; |
919 | p += 2; |
dea0fc0b |
920 | if (low < 0xdc00 || low >= 0xdfff) |
921 | Perl_croak(aTHX_ "Malformed UTF-16 surrogate"); |
a0ed51b3 |
922 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
923 | } |
924 | if (uv < 0x10000) { |
eb160463 |
925 | *d++ = (U8)(( uv >> 12) | 0xe0); |
926 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
927 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
928 | continue; |
929 | } |
930 | else { |
eb160463 |
931 | *d++ = (U8)(( uv >> 18) | 0xf0); |
932 | *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80); |
933 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
934 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
935 | continue; |
936 | } |
937 | } |
dea0fc0b |
938 | *newlen = d - dstart; |
a0ed51b3 |
939 | return d; |
940 | } |
941 | |
942 | /* Note: this one is slightly destructive of the source. */ |
943 | |
944 | U8* |
dea0fc0b |
945 | Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
946 | { |
947 | U8* s = (U8*)p; |
948 | U8* send = s + bytelen; |
949 | while (s < send) { |
950 | U8 tmp = s[0]; |
951 | s[0] = s[1]; |
952 | s[1] = tmp; |
953 | s += 2; |
954 | } |
dea0fc0b |
955 | return utf16_to_utf8(p, d, bytelen, newlen); |
a0ed51b3 |
956 | } |
957 | |
958 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ |
959 | |
960 | bool |
84afefe6 |
961 | Perl_is_uni_alnum(pTHX_ UV c) |
a0ed51b3 |
962 | { |
89ebb4a3 |
963 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
964 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
965 | return is_utf8_alnum(tmpbuf); |
966 | } |
967 | |
968 | bool |
84afefe6 |
969 | Perl_is_uni_alnumc(pTHX_ UV c) |
b8c5462f |
970 | { |
89ebb4a3 |
971 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
972 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
973 | return is_utf8_alnumc(tmpbuf); |
974 | } |
975 | |
976 | bool |
84afefe6 |
977 | Perl_is_uni_idfirst(pTHX_ UV c) |
a0ed51b3 |
978 | { |
89ebb4a3 |
979 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
980 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
981 | return is_utf8_idfirst(tmpbuf); |
982 | } |
983 | |
984 | bool |
84afefe6 |
985 | Perl_is_uni_alpha(pTHX_ UV c) |
a0ed51b3 |
986 | { |
89ebb4a3 |
987 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
988 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
989 | return is_utf8_alpha(tmpbuf); |
990 | } |
991 | |
992 | bool |
84afefe6 |
993 | Perl_is_uni_ascii(pTHX_ UV c) |
4d61ec05 |
994 | { |
89ebb4a3 |
995 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
996 | uvchr_to_utf8(tmpbuf, c); |
4d61ec05 |
997 | return is_utf8_ascii(tmpbuf); |
998 | } |
999 | |
1000 | bool |
84afefe6 |
1001 | Perl_is_uni_space(pTHX_ UV c) |
a0ed51b3 |
1002 | { |
89ebb4a3 |
1003 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1004 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1005 | return is_utf8_space(tmpbuf); |
1006 | } |
1007 | |
1008 | bool |
84afefe6 |
1009 | Perl_is_uni_digit(pTHX_ UV c) |
a0ed51b3 |
1010 | { |
89ebb4a3 |
1011 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1012 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1013 | return is_utf8_digit(tmpbuf); |
1014 | } |
1015 | |
1016 | bool |
84afefe6 |
1017 | Perl_is_uni_upper(pTHX_ UV c) |
a0ed51b3 |
1018 | { |
89ebb4a3 |
1019 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1020 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1021 | return is_utf8_upper(tmpbuf); |
1022 | } |
1023 | |
1024 | bool |
84afefe6 |
1025 | Perl_is_uni_lower(pTHX_ UV c) |
a0ed51b3 |
1026 | { |
89ebb4a3 |
1027 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1028 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1029 | return is_utf8_lower(tmpbuf); |
1030 | } |
1031 | |
1032 | bool |
84afefe6 |
1033 | Perl_is_uni_cntrl(pTHX_ UV c) |
b8c5462f |
1034 | { |
89ebb4a3 |
1035 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1036 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
1037 | return is_utf8_cntrl(tmpbuf); |
1038 | } |
1039 | |
1040 | bool |
84afefe6 |
1041 | Perl_is_uni_graph(pTHX_ UV c) |
b8c5462f |
1042 | { |
89ebb4a3 |
1043 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1044 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
1045 | return is_utf8_graph(tmpbuf); |
1046 | } |
1047 | |
1048 | bool |
84afefe6 |
1049 | Perl_is_uni_print(pTHX_ UV c) |
a0ed51b3 |
1050 | { |
89ebb4a3 |
1051 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1052 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1053 | return is_utf8_print(tmpbuf); |
1054 | } |
1055 | |
b8c5462f |
1056 | bool |
84afefe6 |
1057 | Perl_is_uni_punct(pTHX_ UV c) |
b8c5462f |
1058 | { |
89ebb4a3 |
1059 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1060 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
1061 | return is_utf8_punct(tmpbuf); |
1062 | } |
1063 | |
4d61ec05 |
1064 | bool |
84afefe6 |
1065 | Perl_is_uni_xdigit(pTHX_ UV c) |
4d61ec05 |
1066 | { |
89ebb4a3 |
1067 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
230880c1 |
1068 | uvchr_to_utf8(tmpbuf, c); |
4d61ec05 |
1069 | return is_utf8_xdigit(tmpbuf); |
1070 | } |
1071 | |
84afefe6 |
1072 | UV |
1073 | Perl_to_uni_upper(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
1074 | { |
0ebc6274 |
1075 | uvchr_to_utf8(p, c); |
1076 | return to_utf8_upper(p, p, lenp); |
a0ed51b3 |
1077 | } |
1078 | |
84afefe6 |
1079 | UV |
1080 | Perl_to_uni_title(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
1081 | { |
0ebc6274 |
1082 | uvchr_to_utf8(p, c); |
1083 | return to_utf8_title(p, p, lenp); |
a0ed51b3 |
1084 | } |
1085 | |
84afefe6 |
1086 | UV |
1087 | Perl_to_uni_lower(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
1088 | { |
0ebc6274 |
1089 | uvchr_to_utf8(p, c); |
1090 | return to_utf8_lower(p, p, lenp); |
a0ed51b3 |
1091 | } |
1092 | |
84afefe6 |
1093 | UV |
1094 | Perl_to_uni_fold(pTHX_ UV c, U8* p, STRLEN *lenp) |
1095 | { |
0ebc6274 |
1096 | uvchr_to_utf8(p, c); |
1097 | return to_utf8_fold(p, p, lenp); |
84afefe6 |
1098 | } |
1099 | |
a0ed51b3 |
1100 | /* for now these all assume no locale info available for Unicode > 255 */ |
1101 | |
1102 | bool |
84afefe6 |
1103 | Perl_is_uni_alnum_lc(pTHX_ UV c) |
a0ed51b3 |
1104 | { |
1105 | return is_uni_alnum(c); /* XXX no locale support yet */ |
1106 | } |
1107 | |
1108 | bool |
84afefe6 |
1109 | Perl_is_uni_alnumc_lc(pTHX_ UV c) |
b8c5462f |
1110 | { |
1111 | return is_uni_alnumc(c); /* XXX no locale support yet */ |
1112 | } |
1113 | |
1114 | bool |
84afefe6 |
1115 | Perl_is_uni_idfirst_lc(pTHX_ UV c) |
a0ed51b3 |
1116 | { |
1117 | return is_uni_idfirst(c); /* XXX no locale support yet */ |
1118 | } |
1119 | |
1120 | bool |
84afefe6 |
1121 | Perl_is_uni_alpha_lc(pTHX_ UV c) |
a0ed51b3 |
1122 | { |
1123 | return is_uni_alpha(c); /* XXX no locale support yet */ |
1124 | } |
1125 | |
1126 | bool |
84afefe6 |
1127 | Perl_is_uni_ascii_lc(pTHX_ UV c) |
4d61ec05 |
1128 | { |
1129 | return is_uni_ascii(c); /* XXX no locale support yet */ |
1130 | } |
1131 | |
1132 | bool |
84afefe6 |
1133 | Perl_is_uni_space_lc(pTHX_ UV c) |
a0ed51b3 |
1134 | { |
1135 | return is_uni_space(c); /* XXX no locale support yet */ |
1136 | } |
1137 | |
1138 | bool |
84afefe6 |
1139 | Perl_is_uni_digit_lc(pTHX_ UV c) |
a0ed51b3 |
1140 | { |
1141 | return is_uni_digit(c); /* XXX no locale support yet */ |
1142 | } |
1143 | |
1144 | bool |
84afefe6 |
1145 | Perl_is_uni_upper_lc(pTHX_ UV c) |
a0ed51b3 |
1146 | { |
1147 | return is_uni_upper(c); /* XXX no locale support yet */ |
1148 | } |
1149 | |
1150 | bool |
84afefe6 |
1151 | Perl_is_uni_lower_lc(pTHX_ UV c) |
a0ed51b3 |
1152 | { |
1153 | return is_uni_lower(c); /* XXX no locale support yet */ |
1154 | } |
1155 | |
1156 | bool |
84afefe6 |
1157 | Perl_is_uni_cntrl_lc(pTHX_ UV c) |
b8c5462f |
1158 | { |
1159 | return is_uni_cntrl(c); /* XXX no locale support yet */ |
1160 | } |
1161 | |
1162 | bool |
84afefe6 |
1163 | Perl_is_uni_graph_lc(pTHX_ UV c) |
b8c5462f |
1164 | { |
1165 | return is_uni_graph(c); /* XXX no locale support yet */ |
1166 | } |
1167 | |
1168 | bool |
84afefe6 |
1169 | Perl_is_uni_print_lc(pTHX_ UV c) |
a0ed51b3 |
1170 | { |
1171 | return is_uni_print(c); /* XXX no locale support yet */ |
1172 | } |
1173 | |
b8c5462f |
1174 | bool |
84afefe6 |
1175 | Perl_is_uni_punct_lc(pTHX_ UV c) |
b8c5462f |
1176 | { |
1177 | return is_uni_punct(c); /* XXX no locale support yet */ |
1178 | } |
1179 | |
4d61ec05 |
1180 | bool |
84afefe6 |
1181 | Perl_is_uni_xdigit_lc(pTHX_ UV c) |
4d61ec05 |
1182 | { |
1183 | return is_uni_xdigit(c); /* XXX no locale support yet */ |
1184 | } |
1185 | |
b7ac61fa |
1186 | U32 |
1187 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
1188 | { |
ee099d14 |
1189 | /* XXX returns only the first character -- do not use XXX */ |
1190 | /* XXX no locale support yet */ |
1191 | STRLEN len; |
89ebb4a3 |
1192 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
ee099d14 |
1193 | return (U32)to_uni_upper(c, tmpbuf, &len); |
b7ac61fa |
1194 | } |
1195 | |
1196 | U32 |
1197 | Perl_to_uni_title_lc(pTHX_ U32 c) |
1198 | { |
ee099d14 |
1199 | /* XXX returns only the first character XXX -- do not use XXX */ |
1200 | /* XXX no locale support yet */ |
1201 | STRLEN len; |
89ebb4a3 |
1202 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
ee099d14 |
1203 | return (U32)to_uni_title(c, tmpbuf, &len); |
b7ac61fa |
1204 | } |
1205 | |
1206 | U32 |
1207 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
1208 | { |
ee099d14 |
1209 | /* XXX returns only the first character -- do not use XXX */ |
1210 | /* XXX no locale support yet */ |
1211 | STRLEN len; |
89ebb4a3 |
1212 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
ee099d14 |
1213 | return (U32)to_uni_lower(c, tmpbuf, &len); |
b7ac61fa |
1214 | } |
1215 | |
a0ed51b3 |
1216 | bool |
7fc63493 |
1217 | Perl_is_utf8_alnum(pTHX_ const U8 *p) |
a0ed51b3 |
1218 | { |
386d01d6 |
1219 | if (!is_utf8_char(p)) |
1220 | return FALSE; |
a0ed51b3 |
1221 | if (!PL_utf8_alnum) |
289d4f09 |
1222 | /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true |
1223 | * descendant of isalnum(3), in other words, it doesn't |
1224 | * contain the '_'. --jhi */ |
1225 | PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0); |
eb160463 |
1226 | return swash_fetch(PL_utf8_alnum, p, TRUE) != 0; |
a0ed51b3 |
1227 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ |
1228 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1229 | if (!PL_utf8_alnum) |
1230 | PL_utf8_alnum = swash_init("utf8", "", |
1231 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
eb160463 |
1232 | return swash_fetch(PL_utf8_alnum, p, TRUE) != 0; |
a0ed51b3 |
1233 | #endif |
1234 | } |
1235 | |
1236 | bool |
7fc63493 |
1237 | Perl_is_utf8_alnumc(pTHX_ const U8 *p) |
b8c5462f |
1238 | { |
386d01d6 |
1239 | if (!is_utf8_char(p)) |
1240 | return FALSE; |
b8c5462f |
1241 | if (!PL_utf8_alnum) |
1242 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); |
eb160463 |
1243 | return swash_fetch(PL_utf8_alnum, p, TRUE) != 0; |
b8c5462f |
1244 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ |
1245 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1246 | if (!PL_utf8_alnum) |
1247 | PL_utf8_alnum = swash_init("utf8", "", |
1248 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
eb160463 |
1249 | return swash_fetch(PL_utf8_alnum, p, TRUE) != 0; |
b8c5462f |
1250 | #endif |
1251 | } |
1252 | |
1253 | bool |
7fc63493 |
1254 | Perl_is_utf8_idfirst(pTHX_ const U8 *p) /* The naming is historical. */ |
a0ed51b3 |
1255 | { |
82686b01 |
1256 | if (*p == '_') |
1257 | return TRUE; |
1258 | if (!is_utf8_char(p)) |
1259 | return FALSE; |
1260 | if (!PL_utf8_idstart) /* is_utf8_idstart would be more logical. */ |
1261 | PL_utf8_idstart = swash_init("utf8", "IdStart", &PL_sv_undef, 0, 0); |
eb160463 |
1262 | return swash_fetch(PL_utf8_idstart, p, TRUE) != 0; |
82686b01 |
1263 | } |
1264 | |
1265 | bool |
7fc63493 |
1266 | Perl_is_utf8_idcont(pTHX_ const U8 *p) |
82686b01 |
1267 | { |
1268 | if (*p == '_') |
1269 | return TRUE; |
1270 | if (!is_utf8_char(p)) |
1271 | return FALSE; |
1272 | if (!PL_utf8_idcont) |
1273 | PL_utf8_idcont = swash_init("utf8", "IdContinue", &PL_sv_undef, 0, 0); |
eb160463 |
1274 | return swash_fetch(PL_utf8_idcont, p, TRUE) != 0; |
a0ed51b3 |
1275 | } |
1276 | |
1277 | bool |
7fc63493 |
1278 | Perl_is_utf8_alpha(pTHX_ const U8 *p) |
a0ed51b3 |
1279 | { |
386d01d6 |
1280 | if (!is_utf8_char(p)) |
1281 | return FALSE; |
a0ed51b3 |
1282 | if (!PL_utf8_alpha) |
e24b16f9 |
1283 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
eb160463 |
1284 | return swash_fetch(PL_utf8_alpha, p, TRUE) != 0; |
a0ed51b3 |
1285 | } |
1286 | |
1287 | bool |
7fc63493 |
1288 | Perl_is_utf8_ascii(pTHX_ const U8 *p) |
b8c5462f |
1289 | { |
386d01d6 |
1290 | if (!is_utf8_char(p)) |
1291 | return FALSE; |
b8c5462f |
1292 | if (!PL_utf8_ascii) |
1293 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); |
eb160463 |
1294 | return swash_fetch(PL_utf8_ascii, p, TRUE) != 0; |
b8c5462f |
1295 | } |
1296 | |
1297 | bool |
7fc63493 |
1298 | Perl_is_utf8_space(pTHX_ const U8 *p) |
a0ed51b3 |
1299 | { |
386d01d6 |
1300 | if (!is_utf8_char(p)) |
1301 | return FALSE; |
a0ed51b3 |
1302 | if (!PL_utf8_space) |
3bec3564 |
1303 | PL_utf8_space = swash_init("utf8", "IsSpacePerl", &PL_sv_undef, 0, 0); |
eb160463 |
1304 | return swash_fetch(PL_utf8_space, p, TRUE) != 0; |
a0ed51b3 |
1305 | } |
1306 | |
1307 | bool |
7fc63493 |
1308 | Perl_is_utf8_digit(pTHX_ const U8 *p) |
a0ed51b3 |
1309 | { |
386d01d6 |
1310 | if (!is_utf8_char(p)) |
1311 | return FALSE; |
a0ed51b3 |
1312 | if (!PL_utf8_digit) |
e24b16f9 |
1313 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
eb160463 |
1314 | return swash_fetch(PL_utf8_digit, p, TRUE) != 0; |
a0ed51b3 |
1315 | } |
1316 | |
1317 | bool |
7fc63493 |
1318 | Perl_is_utf8_upper(pTHX_ const U8 *p) |
a0ed51b3 |
1319 | { |
386d01d6 |
1320 | if (!is_utf8_char(p)) |
1321 | return FALSE; |
a0ed51b3 |
1322 | if (!PL_utf8_upper) |
c65e4d19 |
1323 | PL_utf8_upper = swash_init("utf8", "IsUppercase", &PL_sv_undef, 0, 0); |
eb160463 |
1324 | return swash_fetch(PL_utf8_upper, p, TRUE) != 0; |
a0ed51b3 |
1325 | } |
1326 | |
1327 | bool |
7fc63493 |
1328 | Perl_is_utf8_lower(pTHX_ const U8 *p) |
a0ed51b3 |
1329 | { |
386d01d6 |
1330 | if (!is_utf8_char(p)) |
1331 | return FALSE; |
a0ed51b3 |
1332 | if (!PL_utf8_lower) |
c65e4d19 |
1333 | PL_utf8_lower = swash_init("utf8", "IsLowercase", &PL_sv_undef, 0, 0); |
eb160463 |
1334 | return swash_fetch(PL_utf8_lower, p, TRUE) != 0; |
a0ed51b3 |
1335 | } |
1336 | |
1337 | bool |
7fc63493 |
1338 | Perl_is_utf8_cntrl(pTHX_ const U8 *p) |
b8c5462f |
1339 | { |
386d01d6 |
1340 | if (!is_utf8_char(p)) |
1341 | return FALSE; |
b8c5462f |
1342 | if (!PL_utf8_cntrl) |
1343 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); |
eb160463 |
1344 | return swash_fetch(PL_utf8_cntrl, p, TRUE) != 0; |
b8c5462f |
1345 | } |
1346 | |
1347 | bool |
7fc63493 |
1348 | Perl_is_utf8_graph(pTHX_ const U8 *p) |
b8c5462f |
1349 | { |
386d01d6 |
1350 | if (!is_utf8_char(p)) |
1351 | return FALSE; |
b8c5462f |
1352 | if (!PL_utf8_graph) |
1353 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); |
eb160463 |
1354 | return swash_fetch(PL_utf8_graph, p, TRUE) != 0; |
b8c5462f |
1355 | } |
1356 | |
1357 | bool |
7fc63493 |
1358 | Perl_is_utf8_print(pTHX_ const U8 *p) |
a0ed51b3 |
1359 | { |
386d01d6 |
1360 | if (!is_utf8_char(p)) |
1361 | return FALSE; |
a0ed51b3 |
1362 | if (!PL_utf8_print) |
e24b16f9 |
1363 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
eb160463 |
1364 | return swash_fetch(PL_utf8_print, p, TRUE) != 0; |
a0ed51b3 |
1365 | } |
1366 | |
1367 | bool |
7fc63493 |
1368 | Perl_is_utf8_punct(pTHX_ const U8 *p) |
b8c5462f |
1369 | { |
386d01d6 |
1370 | if (!is_utf8_char(p)) |
1371 | return FALSE; |
b8c5462f |
1372 | if (!PL_utf8_punct) |
1373 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); |
eb160463 |
1374 | return swash_fetch(PL_utf8_punct, p, TRUE) != 0; |
b8c5462f |
1375 | } |
1376 | |
1377 | bool |
7fc63493 |
1378 | Perl_is_utf8_xdigit(pTHX_ const U8 *p) |
b8c5462f |
1379 | { |
386d01d6 |
1380 | if (!is_utf8_char(p)) |
1381 | return FALSE; |
b8c5462f |
1382 | if (!PL_utf8_xdigit) |
1383 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); |
eb160463 |
1384 | return swash_fetch(PL_utf8_xdigit, p, TRUE) != 0; |
b8c5462f |
1385 | } |
1386 | |
1387 | bool |
7fc63493 |
1388 | Perl_is_utf8_mark(pTHX_ const U8 *p) |
a0ed51b3 |
1389 | { |
386d01d6 |
1390 | if (!is_utf8_char(p)) |
1391 | return FALSE; |
a0ed51b3 |
1392 | if (!PL_utf8_mark) |
e24b16f9 |
1393 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
eb160463 |
1394 | return swash_fetch(PL_utf8_mark, p, TRUE) != 0; |
a0ed51b3 |
1395 | } |
1396 | |
6b5c0936 |
1397 | /* |
1398 | =for apidoc A|UV|to_utf8_case|U8 *p|U8* ustrp|STRLEN *lenp|SV **swash|char *normal|char *special |
1399 | |
1400 | The "p" contains the pointer to the UTF-8 string encoding |
1401 | the character that is being converted. |
1402 | |
1403 | The "ustrp" is a pointer to the character buffer to put the |
1404 | conversion result to. The "lenp" is a pointer to the length |
1405 | of the result. |
1406 | |
0134edef |
1407 | The "swashp" is a pointer to the swash to use. |
6b5c0936 |
1408 | |
0134edef |
1409 | Both the special and normal mappings are stored lib/unicore/To/Foo.pl, |
1410 | and loaded by SWASHGET, using lib/utf8_heavy.pl. The special (usually, |
1411 | but not always, a multicharacter mapping), is tried first. |
6b5c0936 |
1412 | |
0134edef |
1413 | The "special" is a string like "utf8::ToSpecLower", which means the |
1414 | hash %utf8::ToSpecLower. The access to the hash is through |
1415 | Perl_to_utf8_case(). |
6b5c0936 |
1416 | |
0134edef |
1417 | The "normal" is a string like "ToLower" which means the swash |
1418 | %utf8::ToLower. |
1419 | |
1420 | =cut */ |
6b5c0936 |
1421 | |
2104c8d9 |
1422 | UV |
e1ec3a88 |
1423 | Perl_to_utf8_case(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp, SV **swashp, const char *normal, const char *special) |
a0ed51b3 |
1424 | { |
89ebb4a3 |
1425 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
0134edef |
1426 | STRLEN len = 0; |
a0ed51b3 |
1427 | |
7fc63493 |
1428 | const UV uv0 = utf8_to_uvchr(p, 0); |
1feea2c7 |
1429 | /* The NATIVE_TO_UNI() and UNI_TO_NATIVE() mappings |
1430 | * are necessary in EBCDIC, they are redundant no-ops |
1431 | * in ASCII-ish platforms, and hopefully optimized away. */ |
f54cb97a |
1432 | const UV uv1 = NATIVE_TO_UNI(uv0); |
1feea2c7 |
1433 | uvuni_to_utf8(tmpbuf, uv1); |
0134edef |
1434 | |
1435 | if (!*swashp) /* load on-demand */ |
1436 | *swashp = swash_init("utf8", normal, &PL_sv_undef, 4, 0); |
1437 | |
b08cf34e |
1438 | /* The 0xDF is the only special casing Unicode code point below 0x100. */ |
1439 | if (special && (uv1 == 0xDF || uv1 > 0xFF)) { |
0134edef |
1440 | /* It might be "special" (sometimes, but not always, |
2a37f04d |
1441 | * a multicharacter mapping) */ |
983ffd37 |
1442 | HV *hv; |
b08cf34e |
1443 | SV **svp; |
1444 | |
1445 | if ((hv = get_hv(special, FALSE)) && |
1446 | (svp = hv_fetch(hv, (const char*)tmpbuf, UNISKIP(uv1), FALSE)) && |
1447 | (*svp)) { |
1448 | char *s; |
47654450 |
1449 | |
b08cf34e |
1450 | s = SvPV(*svp, len); |
47654450 |
1451 | if (len == 1) |
1452 | len = uvuni_to_utf8(ustrp, NATIVE_TO_UNI(*(U8*)s)) - ustrp; |
2a37f04d |
1453 | else { |
2f9475ad |
1454 | #ifdef EBCDIC |
1455 | /* If we have EBCDIC we need to remap the characters |
1456 | * since any characters in the low 256 are Unicode |
1457 | * code points, not EBCDIC. */ |
7cda7a3d |
1458 | U8 *t = (U8*)s, *tend = t + len, *d; |
2f9475ad |
1459 | |
1460 | d = tmpbuf; |
b08cf34e |
1461 | if (SvUTF8(*svp)) { |
2f9475ad |
1462 | STRLEN tlen = 0; |
1463 | |
1464 | while (t < tend) { |
1465 | UV c = utf8_to_uvchr(t, &tlen); |
1466 | if (tlen > 0) { |
1467 | d = uvchr_to_utf8(d, UNI_TO_NATIVE(c)); |
1468 | t += tlen; |
1469 | } |
1470 | else |
1471 | break; |
1472 | } |
1473 | } |
1474 | else { |
36fec512 |
1475 | while (t < tend) { |
1476 | d = uvchr_to_utf8(d, UNI_TO_NATIVE(*t)); |
1477 | t++; |
1478 | } |
2f9475ad |
1479 | } |
1480 | len = d - tmpbuf; |
1481 | Copy(tmpbuf, ustrp, len, U8); |
1482 | #else |
d2dcd0fb |
1483 | Copy(s, ustrp, len, U8); |
2f9475ad |
1484 | #endif |
29e98929 |
1485 | } |
983ffd37 |
1486 | } |
0134edef |
1487 | } |
1488 | |
1489 | if (!len && *swashp) { |
1490 | UV uv2 = swash_fetch(*swashp, tmpbuf, TRUE); |
1491 | |
1492 | if (uv2) { |
1493 | /* It was "normal" (a single character mapping). */ |
1494 | UV uv3 = UNI_TO_NATIVE(uv2); |
1495 | |
e9101d72 |
1496 | len = uvchr_to_utf8(ustrp, uv3) - ustrp; |
2a37f04d |
1497 | } |
1498 | } |
1feea2c7 |
1499 | |
0134edef |
1500 | if (!len) /* Neither: just copy. */ |
1501 | len = uvchr_to_utf8(ustrp, uv0) - ustrp; |
1502 | |
2a37f04d |
1503 | if (lenp) |
1504 | *lenp = len; |
1505 | |
0134edef |
1506 | return len ? utf8_to_uvchr(ustrp, 0) : 0; |
a0ed51b3 |
1507 | } |
1508 | |
d3e79532 |
1509 | /* |
7fc63493 |
1510 | =for apidoc A|UV|to_utf8_upper|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 |
1511 | |
1512 | Convert the UTF-8 encoded character at p to its uppercase version and |
1513 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
89ebb4a3 |
1514 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since |
1515 | the uppercase version may be longer than the original character. |
d3e79532 |
1516 | |
1517 | The first character of the uppercased version is returned |
1518 | (but note, as explained above, that there may be more.) |
1519 | |
1520 | =cut */ |
1521 | |
2104c8d9 |
1522 | UV |
7fc63493 |
1523 | Perl_to_utf8_upper(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1524 | { |
983ffd37 |
1525 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1526 | &PL_utf8_toupper, "ToUpper", "utf8::ToSpecUpper"); |
983ffd37 |
1527 | } |
a0ed51b3 |
1528 | |
d3e79532 |
1529 | /* |
7fc63493 |
1530 | =for apidoc A|UV|to_utf8_title|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 |
1531 | |
1532 | Convert the UTF-8 encoded character at p to its titlecase version and |
1533 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
89ebb4a3 |
1534 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the |
1535 | titlecase version may be longer than the original character. |
d3e79532 |
1536 | |
1537 | The first character of the titlecased version is returned |
1538 | (but note, as explained above, that there may be more.) |
1539 | |
1540 | =cut */ |
1541 | |
983ffd37 |
1542 | UV |
7fc63493 |
1543 | Perl_to_utf8_title(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
983ffd37 |
1544 | { |
1545 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1546 | &PL_utf8_totitle, "ToTitle", "utf8::ToSpecTitle"); |
a0ed51b3 |
1547 | } |
1548 | |
d3e79532 |
1549 | /* |
7fc63493 |
1550 | =for apidoc A|UV|to_utf8_lower|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 |
1551 | |
1552 | Convert the UTF-8 encoded character at p to its lowercase version and |
1553 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
89ebb4a3 |
1554 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the |
1555 | lowercase version may be longer than the original character. |
d3e79532 |
1556 | |
1557 | The first character of the lowercased version is returned |
1558 | (but note, as explained above, that there may be more.) |
1559 | |
1560 | =cut */ |
1561 | |
2104c8d9 |
1562 | UV |
7fc63493 |
1563 | Perl_to_utf8_lower(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1564 | { |
983ffd37 |
1565 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1566 | &PL_utf8_tolower, "ToLower", "utf8::ToSpecLower"); |
1567 | } |
1568 | |
d3e79532 |
1569 | /* |
7fc63493 |
1570 | =for apidoc A|UV|to_utf8_fold|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 |
1571 | |
1572 | Convert the UTF-8 encoded character at p to its foldcase version and |
1573 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
89ebb4a3 |
1574 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the |
d3e79532 |
1575 | foldcase version may be longer than the original character (up to |
1576 | three characters). |
1577 | |
1578 | The first character of the foldcased version is returned |
1579 | (but note, as explained above, that there may be more.) |
1580 | |
1581 | =cut */ |
1582 | |
b4e400f9 |
1583 | UV |
7fc63493 |
1584 | Perl_to_utf8_fold(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
b4e400f9 |
1585 | { |
1586 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
1587 | &PL_utf8_tofold, "ToFold", "utf8::ToSpecFold"); |
a0ed51b3 |
1588 | } |
1589 | |
1590 | /* a "swash" is a swatch hash */ |
1591 | |
1592 | SV* |
7fc63493 |
1593 | Perl_swash_init(pTHX_ const char* pkg, const char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 |
1594 | { |
27da23d5 |
1595 | dVAR; |
a0ed51b3 |
1596 | SV* retval; |
243b1711 |
1597 | SV* tokenbufsv = sv_newmortal(); |
8e84507e |
1598 | dSP; |
7fc63493 |
1599 | const size_t pkg_len = strlen(pkg); |
1600 | const size_t name_len = strlen(name); |
71bed85a |
1601 | HV *stash = gv_stashpvn(pkg, pkg_len, FALSE); |
f8be5cf0 |
1602 | SV* errsv_save; |
ce3b816e |
1603 | |
96ca9f55 |
1604 | PUSHSTACKi(PERLSI_MAGIC); |
1605 | ENTER; |
1606 | SAVEI32(PL_hints); |
1607 | PL_hints = 0; |
1608 | save_re_context(); |
1b026014 |
1609 | if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */ |
ce3b816e |
1610 | ENTER; |
f8be5cf0 |
1611 | errsv_save = newSVsv(ERRSV); |
71bed85a |
1612 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpvn(pkg,pkg_len), |
1613 | Nullsv); |
f8be5cf0 |
1614 | if (!SvTRUE(ERRSV)) |
1615 | sv_setsv(ERRSV, errsv_save); |
1616 | SvREFCNT_dec(errsv_save); |
ce3b816e |
1617 | LEAVE; |
1618 | } |
1619 | SPAGAIN; |
a0ed51b3 |
1620 | PUSHMARK(SP); |
1621 | EXTEND(SP,5); |
71bed85a |
1622 | PUSHs(sv_2mortal(newSVpvn(pkg, pkg_len))); |
1623 | PUSHs(sv_2mortal(newSVpvn(name, name_len))); |
a0ed51b3 |
1624 | PUSHs(listsv); |
1625 | PUSHs(sv_2mortal(newSViv(minbits))); |
1626 | PUSHs(sv_2mortal(newSViv(none))); |
1627 | PUTBACK; |
923e4eb5 |
1628 | if (IN_PERL_COMPILETIME) { |
bf1fed83 |
1629 | /* XXX ought to be handled by lex_start */ |
82686b01 |
1630 | SAVEI32(PL_in_my); |
2b4bd638 |
1631 | PL_in_my = 0; |
bf1fed83 |
1632 | sv_setpv(tokenbufsv, PL_tokenbuf); |
82686b01 |
1633 | } |
f8be5cf0 |
1634 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1635 | if (call_method("SWASHNEW", G_SCALAR)) |
8e84507e |
1636 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1637 | else |
e24b16f9 |
1638 | retval = &PL_sv_undef; |
f8be5cf0 |
1639 | if (!SvTRUE(ERRSV)) |
1640 | sv_setsv(ERRSV, errsv_save); |
1641 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1642 | LEAVE; |
1643 | POPSTACK; |
923e4eb5 |
1644 | if (IN_PERL_COMPILETIME) { |
bf1fed83 |
1645 | STRLEN len; |
73d840c0 |
1646 | const char* pv = SvPV(tokenbufsv, len); |
bf1fed83 |
1647 | |
1648 | Copy(pv, PL_tokenbuf, len+1, char); |
eb160463 |
1649 | PL_curcop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
a0ed51b3 |
1650 | } |
bc45ce41 |
1651 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) { |
1652 | if (SvPOK(retval)) |
35c1215d |
1653 | Perl_croak(aTHX_ "Can't find Unicode property definition \"%"SVf"\"", |
1654 | retval); |
cea2e8a9 |
1655 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
bc45ce41 |
1656 | } |
a0ed51b3 |
1657 | return retval; |
1658 | } |
1659 | |
035d37be |
1660 | |
1661 | /* This API is wrong for special case conversions since we may need to |
1662 | * return several Unicode characters for a single Unicode character |
1663 | * (see lib/unicore/SpecCase.txt) The SWASHGET in lib/utf8_heavy.pl is |
1664 | * the lower-level routine, and it is similarly broken for returning |
1665 | * multiple values. --jhi */ |
a0ed51b3 |
1666 | UV |
7fc63493 |
1667 | Perl_swash_fetch(pTHX_ SV *sv, const U8 *ptr, bool do_utf8) |
a0ed51b3 |
1668 | { |
27da23d5 |
1669 | dVAR; |
a0ed51b3 |
1670 | HV* hv = (HV*)SvRV(sv); |
3568d838 |
1671 | U32 klen; |
1672 | U32 off; |
a0ed51b3 |
1673 | STRLEN slen; |
7d85a32c |
1674 | STRLEN needents; |
4ea42e7f |
1675 | U8 *tmps = NULL; |
a0ed51b3 |
1676 | U32 bit; |
1677 | SV *retval; |
3568d838 |
1678 | U8 tmputf8[2]; |
1679 | UV c = NATIVE_TO_ASCII(*ptr); |
1680 | |
1681 | if (!do_utf8 && !UNI_IS_INVARIANT(c)) { |
eb160463 |
1682 | tmputf8[0] = (U8)UTF8_EIGHT_BIT_HI(c); |
1683 | tmputf8[1] = (U8)UTF8_EIGHT_BIT_LO(c); |
3568d838 |
1684 | ptr = tmputf8; |
1685 | } |
1686 | /* Given a UTF-X encoded char 0xAA..0xYY,0xZZ |
1687 | * then the "swatch" is a vec() for al the chars which start |
1688 | * with 0xAA..0xYY |
1689 | * So the key in the hash (klen) is length of encoded char -1 |
1690 | */ |
1691 | klen = UTF8SKIP(ptr) - 1; |
1692 | off = ptr[klen]; |
a0ed51b3 |
1693 | |
7d85a32c |
1694 | if (klen == 0) |
1695 | { |
1696 | /* If char in invariant then swatch is for all the invariant chars |
1e54db1a |
1697 | * In both UTF-8 and UTF-8-MOD that happens to be UTF_CONTINUATION_MARK |
7d85a32c |
1698 | */ |
1699 | needents = UTF_CONTINUATION_MARK; |
1700 | off = NATIVE_TO_UTF(ptr[klen]); |
1701 | } |
1702 | else |
1703 | { |
1704 | /* If char is encoded then swatch is for the prefix */ |
1705 | needents = (1 << UTF_ACCUMULATION_SHIFT); |
1706 | off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK; |
1707 | } |
1708 | |
a0ed51b3 |
1709 | /* |
1710 | * This single-entry cache saves about 1/3 of the utf8 overhead in test |
1711 | * suite. (That is, only 7-8% overall over just a hash cache. Still, |
1712 | * it's nothing to sniff at.) Pity we usually come through at least |
1713 | * two function calls to get here... |
1714 | * |
1715 | * NB: this code assumes that swatches are never modified, once generated! |
1716 | */ |
1717 | |
3568d838 |
1718 | if (hv == PL_last_swash_hv && |
a0ed51b3 |
1719 | klen == PL_last_swash_klen && |
27da23d5 |
1720 | (!klen || memEQ((char *)ptr, (char *)PL_last_swash_key, klen)) ) |
a0ed51b3 |
1721 | { |
1722 | tmps = PL_last_swash_tmps; |
1723 | slen = PL_last_swash_slen; |
1724 | } |
1725 | else { |
1726 | /* Try our second-level swatch cache, kept in a hash. */ |
e1ec3a88 |
1727 | SV** svp = hv_fetch(hv, (const char*)ptr, klen, FALSE); |
a0ed51b3 |
1728 | |
1729 | /* If not cached, generate it via utf8::SWASHGET */ |
dfe13c55 |
1730 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
a0ed51b3 |
1731 | dSP; |
2b9d42f0 |
1732 | /* We use utf8n_to_uvuni() as we want an index into |
1733 | Unicode tables, not a native character number. |
1734 | */ |
89ebb4a3 |
1735 | UV code_point = utf8n_to_uvuni(ptr, UTF8_MAXBYTES, 0, |
872c91ae |
1736 | ckWARN(WARN_UTF8) ? |
1737 | 0 : UTF8_ALLOW_ANY); |
f8be5cf0 |
1738 | SV *errsv_save; |
a0ed51b3 |
1739 | ENTER; |
1740 | SAVETMPS; |
1741 | save_re_context(); |
1742 | PUSHSTACKi(PERLSI_MAGIC); |
1743 | PUSHMARK(SP); |
1744 | EXTEND(SP,3); |
1745 | PUSHs((SV*)sv); |
ffbc6a93 |
1746 | /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */ |
3568d838 |
1747 | PUSHs(sv_2mortal(newSViv((klen) ? |
1748 | (code_point & ~(needents - 1)) : 0))); |
a0ed51b3 |
1749 | PUSHs(sv_2mortal(newSViv(needents))); |
1750 | PUTBACK; |
f8be5cf0 |
1751 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1752 | if (call_method("SWASHGET", G_SCALAR)) |
8e84507e |
1753 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1754 | else |
e24b16f9 |
1755 | retval = &PL_sv_undef; |
f8be5cf0 |
1756 | if (!SvTRUE(ERRSV)) |
1757 | sv_setsv(ERRSV, errsv_save); |
1758 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1759 | POPSTACK; |
1760 | FREETMPS; |
1761 | LEAVE; |
923e4eb5 |
1762 | if (IN_PERL_COMPILETIME) |
eb160463 |
1763 | PL_curcop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
a0ed51b3 |
1764 | |
e1ec3a88 |
1765 | svp = hv_store(hv, (const char *)ptr, klen, retval, 0); |
a0ed51b3 |
1766 | |
7d85a32c |
1767 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || (slen << 3) < needents) |
cea2e8a9 |
1768 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 |
1769 | } |
1770 | |
1771 | PL_last_swash_hv = hv; |
1772 | PL_last_swash_klen = klen; |
1773 | PL_last_swash_tmps = tmps; |
1774 | PL_last_swash_slen = slen; |
1775 | if (klen) |
1776 | Copy(ptr, PL_last_swash_key, klen, U8); |
1777 | } |
1778 | |
9faf8d75 |
1779 | switch ((int)((slen << 3) / needents)) { |
a0ed51b3 |
1780 | case 1: |
1781 | bit = 1 << (off & 7); |
1782 | off >>= 3; |
1783 | return (tmps[off] & bit) != 0; |
1784 | case 8: |
1785 | return tmps[off]; |
1786 | case 16: |
1787 | off <<= 1; |
1788 | return (tmps[off] << 8) + tmps[off + 1] ; |
1789 | case 32: |
1790 | off <<= 2; |
1791 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; |
1792 | } |
cea2e8a9 |
1793 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 |
1794 | return 0; |
1795 | } |
2b9d42f0 |
1796 | |
1797 | |
1798 | /* |
37607a96 |
1799 | =for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv |
2b9d42f0 |
1800 | |
1e54db1a |
1801 | Adds the UTF-8 representation of the Native codepoint C<uv> to the end |
89ebb4a3 |
1802 | of the string C<d>; C<d> should be have at least C<UTF8_MAXBYTES+1> free |
2b9d42f0 |
1803 | bytes available. The return value is the pointer to the byte after the |
1804 | end of the new character. In other words, |
1805 | |
1806 | d = uvchr_to_utf8(d, uv); |
1807 | |
1808 | is the recommended wide native character-aware way of saying |
1809 | |
1810 | *(d++) = uv; |
1811 | |
1812 | =cut |
1813 | */ |
1814 | |
1815 | /* On ASCII machines this is normally a macro but we want a |
1816 | real function in case XS code wants it |
1817 | */ |
1818 | #undef Perl_uvchr_to_utf8 |
1819 | U8 * |
1820 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) |
1821 | { |
b851fbc1 |
1822 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), 0); |
2b9d42f0 |
1823 | } |
1824 | |
b851fbc1 |
1825 | U8 * |
1826 | Perl_uvchr_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags) |
1827 | { |
1828 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), flags); |
1829 | } |
2b9d42f0 |
1830 | |
1831 | /* |
37607a96 |
1832 | =for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
2b9d42f0 |
1833 | |
1834 | Returns the native character value of the first character in the string C<s> |
1e54db1a |
1835 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the |
2b9d42f0 |
1836 | length, in bytes, of that character. |
1837 | |
1838 | Allows length and flags to be passed to low level routine. |
1839 | |
1840 | =cut |
1841 | */ |
0a2ef054 |
1842 | /* On ASCII machines this is normally a macro but we want |
1843 | a real function in case XS code wants it |
2b9d42f0 |
1844 | */ |
1845 | #undef Perl_utf8n_to_uvchr |
1846 | UV |
7fc63493 |
1847 | Perl_utf8n_to_uvchr(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
2b9d42f0 |
1848 | { |
1849 | UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); |
1850 | return UNI_TO_NATIVE(uv); |
1851 | } |
1852 | |
d2cc3551 |
1853 | /* |
1854 | =for apidoc A|char *|pv_uni_display|SV *dsv|U8 *spv|STRLEN len|STRLEN pvlim|UV flags |
1855 | |
1856 | Build to the scalar dsv a displayable version of the string spv, |
1857 | length len, the displayable version being at most pvlim bytes long |
1858 | (if longer, the rest is truncated and "..." will be appended). |
0a2ef054 |
1859 | |
9e55ce06 |
1860 | The flags argument can have UNI_DISPLAY_ISPRINT set to display |
00e86452 |
1861 | isPRINT()able characters as themselves, UNI_DISPLAY_BACKSLASH |
0a2ef054 |
1862 | to display the \\[nrfta\\] as the backslashed versions (like '\n') |
1863 | (UNI_DISPLAY_BACKSLASH is preferred over UNI_DISPLAY_ISPRINT for \\). |
1864 | UNI_DISPLAY_QQ (and its alias UNI_DISPLAY_REGEX) have both |
1865 | UNI_DISPLAY_BACKSLASH and UNI_DISPLAY_ISPRINT turned on. |
1866 | |
d2cc3551 |
1867 | The pointer to the PV of the dsv is returned. |
1868 | |
1869 | =cut */ |
e6b2e755 |
1870 | char * |
e1ec3a88 |
1871 | Perl_pv_uni_display(pTHX_ SV *dsv, const U8 *spv, STRLEN len, STRLEN pvlim, UV flags) |
e6b2e755 |
1872 | { |
1873 | int truncated = 0; |
e1ec3a88 |
1874 | const char *s, *e; |
e6b2e755 |
1875 | |
1876 | sv_setpvn(dsv, "", 0); |
e1ec3a88 |
1877 | for (s = (const char *)spv, e = s + len; s < e; s += UTF8SKIP(s)) { |
e6b2e755 |
1878 | UV u; |
a49f32c6 |
1879 | /* This serves double duty as a flag and a character to print after |
1880 | a \ when flags & UNI_DISPLAY_BACKSLASH is true. |
1881 | */ |
1882 | char ok = 0; |
c728cb41 |
1883 | |
e6b2e755 |
1884 | if (pvlim && SvCUR(dsv) >= pvlim) { |
1885 | truncated++; |
1886 | break; |
1887 | } |
1888 | u = utf8_to_uvchr((U8*)s, 0); |
c728cb41 |
1889 | if (u < 256) { |
a3b680e6 |
1890 | const unsigned char c = (unsigned char)u & 0xFF; |
c728cb41 |
1891 | if (!ok && (flags & UNI_DISPLAY_BACKSLASH)) { |
a49f32c6 |
1892 | switch (c) { |
c728cb41 |
1893 | case '\n': |
a49f32c6 |
1894 | ok = 'n'; break; |
c728cb41 |
1895 | case '\r': |
a49f32c6 |
1896 | ok = 'r'; break; |
c728cb41 |
1897 | case '\t': |
a49f32c6 |
1898 | ok = 't'; break; |
c728cb41 |
1899 | case '\f': |
a49f32c6 |
1900 | ok = 'f'; break; |
c728cb41 |
1901 | case '\a': |
a49f32c6 |
1902 | ok = 'a'; break; |
c728cb41 |
1903 | case '\\': |
a49f32c6 |
1904 | ok = '\\'; break; |
c728cb41 |
1905 | default: break; |
1906 | } |
a49f32c6 |
1907 | if (ok) { |
1908 | Perl_sv_catpvf(aTHX_ dsv, "\\%c", ok); |
1909 | } |
c728cb41 |
1910 | } |
00e86452 |
1911 | /* isPRINT() is the locale-blind version. */ |
a49f32c6 |
1912 | if (!ok && (flags & UNI_DISPLAY_ISPRINT) && isPRINT(c)) { |
1913 | Perl_sv_catpvf(aTHX_ dsv, "%c", c); |
1914 | ok = 1; |
0a2ef054 |
1915 | } |
c728cb41 |
1916 | } |
1917 | if (!ok) |
9e55ce06 |
1918 | Perl_sv_catpvf(aTHX_ dsv, "\\x{%"UVxf"}", u); |
e6b2e755 |
1919 | } |
1920 | if (truncated) |
1921 | sv_catpvn(dsv, "...", 3); |
1922 | |
1923 | return SvPVX(dsv); |
1924 | } |
2b9d42f0 |
1925 | |
d2cc3551 |
1926 | /* |
1927 | =for apidoc A|char *|sv_uni_display|SV *dsv|SV *ssv|STRLEN pvlim|UV flags |
1928 | |
1929 | Build to the scalar dsv a displayable version of the scalar sv, |
0a2ef054 |
1930 | the displayable version being at most pvlim bytes long |
d2cc3551 |
1931 | (if longer, the rest is truncated and "..." will be appended). |
0a2ef054 |
1932 | |
1933 | The flags argument is as in pv_uni_display(). |
1934 | |
d2cc3551 |
1935 | The pointer to the PV of the dsv is returned. |
1936 | |
1937 | =cut */ |
e6b2e755 |
1938 | char * |
1939 | Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags) |
1940 | { |
701a277b |
1941 | return Perl_pv_uni_display(aTHX_ dsv, (U8*)SvPVX(ssv), SvCUR(ssv), |
1942 | pvlim, flags); |
1943 | } |
1944 | |
d2cc3551 |
1945 | /* |
d07ddd77 |
1946 | =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 |
1947 | |
1948 | Return true if the strings s1 and s2 differ case-insensitively, false |
1949 | if not (if they are equal case-insensitively). If u1 is true, the |
1950 | string s1 is assumed to be in UTF-8-encoded Unicode. If u2 is true, |
d07ddd77 |
1951 | the string s2 is assumed to be in UTF-8-encoded Unicode. If u1 or u2 |
1952 | are false, the respective string is assumed to be in native 8-bit |
1953 | encoding. |
1954 | |
1955 | If the pe1 and pe2 are non-NULL, the scanning pointers will be copied |
1956 | in there (they will point at the beginning of the I<next> character). |
1957 | If the pointers behind pe1 or pe2 are non-NULL, they are the end |
1958 | pointers beyond which scanning will not continue under any |
4cdaeff7 |
1959 | circumstances. If the byte lengths l1 and l2 are non-zero, s1+l1 and |
d07ddd77 |
1960 | s2+l2 will be used as goal end pointers that will also stop the scan, |
1961 | and which qualify towards defining a successful match: all the scans |
1962 | that define an explicit length must reach their goal pointers for |
1963 | a match to succeed). |
d2cc3551 |
1964 | |
1965 | For case-insensitiveness, the "casefolding" of Unicode is used |
1966 | instead of upper/lowercasing both the characters, see |
1967 | http://www.unicode.org/unicode/reports/tr21/ (Case Mappings). |
1968 | |
1969 | =cut */ |
701a277b |
1970 | I32 |
d07ddd77 |
1971 | 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 |
1972 | { |
e1ec3a88 |
1973 | register const U8 *p1 = (const U8*)s1; |
1974 | register const U8 *p2 = (const U8*)s2; |
1975 | register const U8 *f1 = 0, *f2 = 0; |
1976 | register U8 *e1 = 0, *q1 = 0; |
1977 | register U8 *e2 = 0, *q2 = 0; |
d07ddd77 |
1978 | STRLEN n1 = 0, n2 = 0; |
89ebb4a3 |
1979 | U8 foldbuf1[UTF8_MAXBYTES_CASE+1]; |
1980 | U8 foldbuf2[UTF8_MAXBYTES_CASE+1]; |
d7f013c8 |
1981 | U8 natbuf[1+1]; |
1982 | STRLEN foldlen1, foldlen2; |
d07ddd77 |
1983 | bool match; |
332ddc25 |
1984 | |
d07ddd77 |
1985 | if (pe1) |
1986 | e1 = *(U8**)pe1; |
e1ec3a88 |
1987 | if (e1 == 0 || (l1 && l1 < (UV)(e1 - (const U8*)s1))) |
1988 | f1 = (const U8*)s1 + l1; |
d07ddd77 |
1989 | if (pe2) |
1990 | e2 = *(U8**)pe2; |
e1ec3a88 |
1991 | if (e2 == 0 || (l2 && l2 < (UV)(e2 - (const U8*)s2))) |
1992 | f2 = (const U8*)s2 + l2; |
d07ddd77 |
1993 | |
1994 | if ((e1 == 0 && f1 == 0) || (e2 == 0 && f2 == 0) || (f1 == 0 && f2 == 0)) |
1995 | return 1; /* mismatch; possible infinite loop or false positive */ |
1996 | |
a6872d42 |
1997 | if (!u1 || !u2) |
1998 | natbuf[1] = 0; /* Need to terminate the buffer. */ |
1999 | |
d07ddd77 |
2000 | while ((e1 == 0 || p1 < e1) && |
2001 | (f1 == 0 || p1 < f1) && |
2002 | (e2 == 0 || p2 < e2) && |
2003 | (f2 == 0 || p2 < f2)) { |
2004 | if (n1 == 0) { |
d7f013c8 |
2005 | if (u1) |
2006 | to_utf8_fold(p1, foldbuf1, &foldlen1); |
2007 | else { |
f5cee151 |
2008 | natbuf[0] = *p1; |
d7f013c8 |
2009 | to_utf8_fold(natbuf, foldbuf1, &foldlen1); |
2010 | } |
2011 | q1 = foldbuf1; |
d07ddd77 |
2012 | n1 = foldlen1; |
332ddc25 |
2013 | } |
d07ddd77 |
2014 | if (n2 == 0) { |
d7f013c8 |
2015 | if (u2) |
2016 | to_utf8_fold(p2, foldbuf2, &foldlen2); |
2017 | else { |
f5cee151 |
2018 | natbuf[0] = *p2; |
d7f013c8 |
2019 | to_utf8_fold(natbuf, foldbuf2, &foldlen2); |
2020 | } |
2021 | q2 = foldbuf2; |
d07ddd77 |
2022 | n2 = foldlen2; |
332ddc25 |
2023 | } |
d07ddd77 |
2024 | while (n1 && n2) { |
2025 | if ( UTF8SKIP(q1) != UTF8SKIP(q2) || |
2026 | (UTF8SKIP(q1) == 1 && *q1 != *q2) || |
2027 | memNE((char*)q1, (char*)q2, UTF8SKIP(q1)) ) |
d7f013c8 |
2028 | return 1; /* mismatch */ |
d07ddd77 |
2029 | n1 -= UTF8SKIP(q1); |
d7f013c8 |
2030 | q1 += UTF8SKIP(q1); |
d07ddd77 |
2031 | n2 -= UTF8SKIP(q2); |
d7f013c8 |
2032 | q2 += UTF8SKIP(q2); |
701a277b |
2033 | } |
d07ddd77 |
2034 | if (n1 == 0) |
d7f013c8 |
2035 | p1 += u1 ? UTF8SKIP(p1) : 1; |
d07ddd77 |
2036 | if (n2 == 0) |
d7f013c8 |
2037 | p2 += u2 ? UTF8SKIP(p2) : 1; |
2038 | |
d2cc3551 |
2039 | } |
5469e704 |
2040 | |
d07ddd77 |
2041 | /* A match is defined by all the scans that specified |
2042 | * an explicit length reaching their final goals. */ |
2043 | match = (f1 == 0 || p1 == f1) && (f2 == 0 || p2 == f2); |
5469e704 |
2044 | |
2045 | if (match) { |
d07ddd77 |
2046 | if (pe1) |
2047 | *pe1 = (char*)p1; |
2048 | if (pe2) |
2049 | *pe2 = (char*)p2; |
5469e704 |
2050 | } |
2051 | |
2052 | return match ? 0 : 1; /* 0 match, 1 mismatch */ |
e6b2e755 |
2053 | } |
701a277b |
2054 | |
a49f32c6 |
2055 | /* |
2056 | * Local variables: |
2057 | * c-indentation-style: bsd |
2058 | * c-basic-offset: 4 |
2059 | * indent-tabs-mode: t |
2060 | * End: |
2061 | * |
37442d52 |
2062 | * ex: set ts=8 sts=4 sw=4 noet: |
2063 | */ |