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 */ |
c053b435 |
194 | STATIC STRLEN |
646ca15d |
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 | { |
768c67ee |
243 | STRLEN len = UTF8SKIP(s); |
3b0fc154 |
244 | #ifdef IS_UTF8_CHAR |
768c67ee |
245 | if (IS_UTF8_CHAR_FAST(len)) |
3b0fc154 |
246 | return IS_UTF8_CHAR(s, len) ? len : 0; |
247 | #endif /* #ifdef IS_UTF8_CHAR */ |
2c0c5f92 |
248 | return is_utf8_char_slow(s, len); |
386d01d6 |
249 | } |
250 | |
6662521e |
251 | /* |
7fc63493 |
252 | =for apidoc A|bool|is_utf8_string|const U8 *s|STRLEN len |
6662521e |
253 | |
c9ada85f |
254 | Returns true if first C<len> bytes of the given string form a valid |
1e54db1a |
255 | UTF-8 string, false otherwise. Note that 'a valid UTF-8 string' does |
256 | not mean 'a string that contains code points above 0x7F encoded in UTF-8' |
257 | because a valid ASCII string is a valid UTF-8 string. |
6662521e |
258 | |
768c67ee |
259 | See also is_utf8_string_loclen() and is_utf8_string_loc(). |
260 | |
6662521e |
261 | =cut |
262 | */ |
263 | |
8e84507e |
264 | bool |
7fc63493 |
265 | Perl_is_utf8_string(pTHX_ const U8 *s, STRLEN len) |
6662521e |
266 | { |
7fc63493 |
267 | const U8* x = s; |
268 | const U8* send; |
067a85ef |
269 | |
61468b03 |
270 | if (!len && s) |
e1ec3a88 |
271 | len = strlen((const char *)s); |
1aa99e6b |
272 | send = s + len; |
273 | |
6662521e |
274 | while (x < send) { |
a3b680e6 |
275 | STRLEN c; |
1acdb0da |
276 | /* Inline the easy bits of is_utf8_char() here for speed... */ |
277 | if (UTF8_IS_INVARIANT(*x)) |
278 | c = 1; |
279 | else if (!UTF8_IS_START(*x)) |
768c67ee |
280 | goto out; |
1acdb0da |
281 | else { |
282 | /* ... and call is_utf8_char() only if really needed. */ |
646ca15d |
283 | #ifdef IS_UTF8_CHAR |
284 | c = UTF8SKIP(x); |
768c67ee |
285 | if (IS_UTF8_CHAR_FAST(c)) { |
286 | if (!IS_UTF8_CHAR(x, c)) |
287 | goto out; |
288 | } else if (!is_utf8_char_slow(x, c)) |
289 | goto out; |
646ca15d |
290 | #else |
291 | c = is_utf8_char(x); |
292 | #endif /* #ifdef IS_UTF8_CHAR */ |
1acdb0da |
293 | if (!c) |
768c67ee |
294 | goto out; |
1acdb0da |
295 | } |
6662521e |
296 | x += c; |
6662521e |
297 | } |
768c67ee |
298 | |
299 | out: |
60006e79 |
300 | if (x != send) |
301 | return FALSE; |
067a85ef |
302 | |
303 | return TRUE; |
6662521e |
304 | } |
305 | |
67e989fb |
306 | /* |
768c67ee |
307 | =for apidoc A|bool|is_utf8_string_loclen|const U8 *s|STRLEN len|const U8 **ep|const STRLEN *el |
81cd54e3 |
308 | |
768c67ee |
309 | Like is_ut8_string() but stores the location of the failure (in the |
310 | case of "utf8ness failure") or the location s+len (in the case of |
311 | "utf8ness success") in the C<ep>, and the number of UTF-8 |
312 | encoded characters in the C<el>. |
313 | |
314 | See also is_utf8_string_loc() and is_utf8_string(). |
81cd54e3 |
315 | |
316 | =cut |
317 | */ |
318 | |
319 | bool |
768c67ee |
320 | Perl_is_utf8_string_loclen(pTHX_ const U8 *s, STRLEN len, const U8 **ep, STRLEN *el) |
81cd54e3 |
321 | { |
7fc63493 |
322 | const U8* x = s; |
323 | const U8* send; |
81cd54e3 |
324 | STRLEN c; |
325 | |
61468b03 |
326 | if (!len && s) |
e1ec3a88 |
327 | len = strlen((const char *)s); |
81cd54e3 |
328 | send = s + len; |
768c67ee |
329 | if (el) |
330 | *el = 0; |
81cd54e3 |
331 | |
332 | while (x < send) { |
333 | /* Inline the easy bits of is_utf8_char() here for speed... */ |
334 | if (UTF8_IS_INVARIANT(*x)) |
768c67ee |
335 | c = 1; |
336 | else if (!UTF8_IS_START(*x)) |
337 | goto out; |
81cd54e3 |
338 | else { |
768c67ee |
339 | /* ... and call is_utf8_char() only if really needed. */ |
340 | #ifdef IS_UTF8_CHAR |
341 | c = UTF8SKIP(x); |
342 | if (IS_UTF8_CHAR_FAST(c)) { |
343 | if (!IS_UTF8_CHAR(x, c)) |
344 | c = 0; |
345 | } else |
346 | c = is_utf8_char_slow(x, c); |
347 | #else |
348 | c = is_utf8_char(x); |
349 | #endif /* #ifdef IS_UTF8_CHAR */ |
350 | if (!c) |
351 | goto out; |
81cd54e3 |
352 | } |
768c67ee |
353 | x += c; |
354 | if (el) |
355 | (*el)++; |
81cd54e3 |
356 | } |
768c67ee |
357 | |
358 | out: |
359 | if (ep) |
360 | *ep = x; |
361 | if (x != send) |
81cd54e3 |
362 | return FALSE; |
81cd54e3 |
363 | |
364 | return TRUE; |
365 | } |
366 | |
367 | /* |
768c67ee |
368 | =for apidoc A|bool|is_utf8_string_loc|const U8 *s|STRLEN len|const U8 **ep|const STRLEN *el |
369 | |
370 | Like is_ut8_string() but stores the location of the failure (in the |
371 | case of "utf8ness failure") or the location s+len (in the case of |
372 | "utf8ness success") in the C<ep>. |
373 | |
374 | See also is_utf8_string_loclen() and is_utf8_string(). |
375 | |
376 | =cut |
377 | */ |
378 | |
379 | bool |
380 | Perl_is_utf8_string_loc(pTHX_ const U8 *s, STRLEN len, const U8 **ep) |
381 | { |
382 | return is_utf8_string_loclen(s, len, ep, 0); |
383 | } |
384 | |
385 | /* |
7fc63493 |
386 | =for apidoc A|UV|utf8n_to_uvuni|const U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
67e989fb |
387 | |
9041c2e3 |
388 | Bottom level UTF-8 decode routine. |
389 | Returns the unicode code point value of the first character in the string C<s> |
1e54db1a |
390 | which is assumed to be in UTF-8 encoding and no longer than C<curlen>; |
7df053ec |
391 | C<retlen> will be set to the length, in bytes, of that character. |
67e989fb |
392 | |
1e54db1a |
393 | If C<s> does not point to a well-formed UTF-8 character, the behaviour |
dcad2880 |
394 | is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY, |
395 | it is assumed that the caller will raise a warning, and this function |
28d3d195 |
396 | will silently just set C<retlen> to C<-1> and return zero. If the |
397 | C<flags> does not contain UTF8_CHECK_ONLY, warnings about |
398 | malformations will be given, C<retlen> will be set to the expected |
399 | length of the UTF-8 character in bytes, and zero will be returned. |
400 | |
401 | The C<flags> can also contain various flags to allow deviations from |
402 | the strict UTF-8 encoding (see F<utf8.h>). |
67e989fb |
403 | |
9041c2e3 |
404 | Most code should use utf8_to_uvchr() rather than call this directly. |
405 | |
37607a96 |
406 | =cut |
407 | */ |
67e989fb |
408 | |
a0ed51b3 |
409 | UV |
7fc63493 |
410 | Perl_utf8n_to_uvuni(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
a0ed51b3 |
411 | { |
7fc63493 |
412 | const U8 *s0 = s; |
9c5ffd7c |
413 | UV uv = *s, ouv = 0; |
ba210ebe |
414 | STRLEN len = 1; |
7fc63493 |
415 | const bool dowarn = ckWARN_d(WARN_UTF8); |
416 | const UV startbyte = *s; |
ba210ebe |
417 | STRLEN expectlen = 0; |
a0dbb045 |
418 | U32 warning = 0; |
419 | |
420 | /* This list is a superset of the UTF8_ALLOW_XXX. */ |
421 | |
422 | #define UTF8_WARN_EMPTY 1 |
423 | #define UTF8_WARN_CONTINUATION 2 |
424 | #define UTF8_WARN_NON_CONTINUATION 3 |
425 | #define UTF8_WARN_FE_FF 4 |
426 | #define UTF8_WARN_SHORT 5 |
427 | #define UTF8_WARN_OVERFLOW 6 |
428 | #define UTF8_WARN_SURROGATE 7 |
c867b360 |
429 | #define UTF8_WARN_LONG 8 |
430 | #define UTF8_WARN_FFFF 9 /* Also FFFE. */ |
a0dbb045 |
431 | |
432 | if (curlen == 0 && |
433 | !(flags & UTF8_ALLOW_EMPTY)) { |
434 | warning = UTF8_WARN_EMPTY; |
0c443dc2 |
435 | goto malformed; |
436 | } |
437 | |
1d72bdf6 |
438 | if (UTF8_IS_INVARIANT(uv)) { |
a0ed51b3 |
439 | if (retlen) |
440 | *retlen = 1; |
c4d5f83a |
441 | return (UV) (NATIVE_TO_UTF(*s)); |
a0ed51b3 |
442 | } |
67e989fb |
443 | |
421a8bf2 |
444 | if (UTF8_IS_CONTINUATION(uv) && |
fcc8fcf6 |
445 | !(flags & UTF8_ALLOW_CONTINUATION)) { |
a0dbb045 |
446 | warning = UTF8_WARN_CONTINUATION; |
ba210ebe |
447 | goto malformed; |
448 | } |
449 | |
421a8bf2 |
450 | if (UTF8_IS_START(uv) && curlen > 1 && !UTF8_IS_CONTINUATION(s[1]) && |
fcc8fcf6 |
451 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
452 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
453 | goto malformed; |
454 | } |
9041c2e3 |
455 | |
1d72bdf6 |
456 | #ifdef EBCDIC |
75383841 |
457 | uv = NATIVE_TO_UTF(uv); |
1d72bdf6 |
458 | #else |
fcc8fcf6 |
459 | if ((uv == 0xfe || uv == 0xff) && |
460 | !(flags & UTF8_ALLOW_FE_FF)) { |
a0dbb045 |
461 | warning = UTF8_WARN_FE_FF; |
ba210ebe |
462 | goto malformed; |
a0ed51b3 |
463 | } |
1d72bdf6 |
464 | #endif |
465 | |
ba210ebe |
466 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
467 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } |
468 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } |
469 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } |
1d72bdf6 |
470 | #ifdef EBCDIC |
471 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
472 | else { len = 7; uv &= 0x01; } |
473 | #else |
ba210ebe |
474 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
475 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
1d72bdf6 |
476 | else { len = 13; uv = 0; } /* whoa! */ |
477 | #endif |
478 | |
a0ed51b3 |
479 | if (retlen) |
480 | *retlen = len; |
9041c2e3 |
481 | |
ba210ebe |
482 | expectlen = len; |
483 | |
fcc8fcf6 |
484 | if ((curlen < expectlen) && |
485 | !(flags & UTF8_ALLOW_SHORT)) { |
a0dbb045 |
486 | warning = UTF8_WARN_SHORT; |
ba210ebe |
487 | goto malformed; |
488 | } |
489 | |
490 | len--; |
a0ed51b3 |
491 | s++; |
ba210ebe |
492 | ouv = uv; |
493 | |
a0ed51b3 |
494 | while (len--) { |
421a8bf2 |
495 | if (!UTF8_IS_CONTINUATION(*s) && |
496 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 |
497 | s--; |
498 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe |
499 | goto malformed; |
a0ed51b3 |
500 | } |
501 | else |
8850bf83 |
502 | uv = UTF8_ACCUMULATE(uv, *s); |
a0dbb045 |
503 | if (!(uv > ouv)) { |
504 | /* These cannot be allowed. */ |
505 | if (uv == ouv) { |
75dbc644 |
506 | if (expectlen != 13 && !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 |
507 | warning = UTF8_WARN_LONG; |
508 | goto malformed; |
509 | } |
510 | } |
511 | else { /* uv < ouv */ |
512 | /* This cannot be allowed. */ |
513 | warning = UTF8_WARN_OVERFLOW; |
514 | goto malformed; |
515 | } |
ba210ebe |
516 | } |
517 | s++; |
518 | ouv = uv; |
519 | } |
520 | |
421a8bf2 |
521 | if (UNICODE_IS_SURROGATE(uv) && |
fcc8fcf6 |
522 | !(flags & UTF8_ALLOW_SURROGATE)) { |
a0dbb045 |
523 | warning = UTF8_WARN_SURROGATE; |
ba210ebe |
524 | goto malformed; |
eb160463 |
525 | } else if ((expectlen > (STRLEN)UNISKIP(uv)) && |
fcc8fcf6 |
526 | !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 |
527 | warning = UTF8_WARN_LONG; |
ba210ebe |
528 | goto malformed; |
421a8bf2 |
529 | } else if (UNICODE_IS_ILLEGAL(uv) && |
a9917092 |
530 | !(flags & UTF8_ALLOW_FFFF)) { |
a0dbb045 |
531 | warning = UTF8_WARN_FFFF; |
a9917092 |
532 | goto malformed; |
a0ed51b3 |
533 | } |
ba210ebe |
534 | |
a0ed51b3 |
535 | return uv; |
ba210ebe |
536 | |
537 | malformed: |
538 | |
fcc8fcf6 |
539 | if (flags & UTF8_CHECK_ONLY) { |
ba210ebe |
540 | if (retlen) |
cc366d4b |
541 | *retlen = -1; |
ba210ebe |
542 | return 0; |
543 | } |
544 | |
a0dbb045 |
545 | if (dowarn) { |
546 | SV* sv = sv_2mortal(newSVpv("Malformed UTF-8 character ", 0)); |
547 | |
548 | switch (warning) { |
549 | case 0: /* Intentionally empty. */ break; |
550 | case UTF8_WARN_EMPTY: |
54667de8 |
551 | Perl_sv_catpv(aTHX_ sv, "(empty string)"); |
a0dbb045 |
552 | break; |
553 | case UTF8_WARN_CONTINUATION: |
097fb8e2 |
554 | Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf", with no preceding start byte)", uv); |
a0dbb045 |
555 | break; |
556 | case UTF8_WARN_NON_CONTINUATION: |
097fb8e2 |
557 | if (s == s0) |
558 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", immediately after start byte 0x%02"UVxf")", |
559 | (UV)s[1], startbyte); |
560 | else |
561 | 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 |
562 | (UV)s[1], s - s0, s - s0 > 1 ? "s" : "", startbyte, (int)expectlen); |
097fb8e2 |
563 | |
a0dbb045 |
564 | break; |
565 | case UTF8_WARN_FE_FF: |
566 | Perl_sv_catpvf(aTHX_ sv, "(byte 0x%02"UVxf")", uv); |
567 | break; |
568 | case UTF8_WARN_SHORT: |
097fb8e2 |
569 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
5d7488b2 |
570 | (int)curlen, curlen == 1 ? "" : "s", (int)expectlen, startbyte); |
b31f83c2 |
571 | expectlen = curlen; /* distance for caller to skip */ |
a0dbb045 |
572 | break; |
573 | case UTF8_WARN_OVERFLOW: |
097fb8e2 |
574 | Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x, after start byte 0x%02"UVxf")", |
575 | ouv, *s, startbyte); |
a0dbb045 |
576 | break; |
577 | case UTF8_WARN_SURROGATE: |
578 | Perl_sv_catpvf(aTHX_ sv, "(UTF-16 surrogate 0x%04"UVxf")", uv); |
579 | break; |
a0dbb045 |
580 | case UTF8_WARN_LONG: |
097fb8e2 |
581 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
5d7488b2 |
582 | (int)expectlen, expectlen == 1 ? "": "s", UNISKIP(uv), startbyte); |
a0dbb045 |
583 | break; |
584 | case UTF8_WARN_FFFF: |
585 | Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv); |
586 | break; |
587 | default: |
54667de8 |
588 | Perl_sv_catpv(aTHX_ sv, "(unknown reason)"); |
a0dbb045 |
589 | break; |
590 | } |
591 | |
592 | if (warning) { |
504618e9 |
593 | const char *s = SvPVX_const(sv); |
a0dbb045 |
594 | |
595 | if (PL_op) |
9014280d |
596 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
53e06cf0 |
597 | "%s in %s", s, OP_DESC(PL_op)); |
a0dbb045 |
598 | else |
9014280d |
599 | Perl_warner(aTHX_ packWARN(WARN_UTF8), "%s", s); |
a0dbb045 |
600 | } |
601 | } |
602 | |
ba210ebe |
603 | if (retlen) |
28d3d195 |
604 | *retlen = expectlen ? expectlen : len; |
ba210ebe |
605 | |
28d3d195 |
606 | return 0; |
a0ed51b3 |
607 | } |
608 | |
8e84507e |
609 | /* |
7fc63493 |
610 | =for apidoc A|UV|utf8_to_uvchr|const U8 *s|STRLEN *retlen |
9041c2e3 |
611 | |
612 | Returns the native character value of the first character in the string C<s> |
1e54db1a |
613 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the |
9041c2e3 |
614 | length, in bytes, of that character. |
615 | |
1e54db1a |
616 | If C<s> does not point to a well-formed UTF-8 character, zero is |
9041c2e3 |
617 | returned and retlen is set, if possible, to -1. |
618 | |
619 | =cut |
620 | */ |
621 | |
622 | UV |
7fc63493 |
623 | Perl_utf8_to_uvchr(pTHX_ const U8 *s, STRLEN *retlen) |
9041c2e3 |
624 | { |
89ebb4a3 |
625 | return Perl_utf8n_to_uvchr(aTHX_ s, UTF8_MAXBYTES, retlen, |
872c91ae |
626 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
9041c2e3 |
627 | } |
628 | |
629 | /* |
7fc63493 |
630 | =for apidoc A|UV|utf8_to_uvuni|const U8 *s|STRLEN *retlen |
9041c2e3 |
631 | |
632 | Returns the Unicode code point of the first character in the string C<s> |
1e54db1a |
633 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the |
9041c2e3 |
634 | length, in bytes, of that character. |
635 | |
636 | This function should only be used when returned UV is considered |
637 | an index into the Unicode semantic tables (e.g. swashes). |
638 | |
1e54db1a |
639 | If C<s> does not point to a well-formed UTF-8 character, zero is |
ba210ebe |
640 | returned and retlen is set, if possible, to -1. |
8e84507e |
641 | |
642 | =cut |
643 | */ |
644 | |
645 | UV |
7fc63493 |
646 | Perl_utf8_to_uvuni(pTHX_ const U8 *s, STRLEN *retlen) |
8e84507e |
647 | { |
9041c2e3 |
648 | /* Call the low level routine asking for checks */ |
89ebb4a3 |
649 | return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXBYTES, retlen, |
872c91ae |
650 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
8e84507e |
651 | } |
652 | |
b76347f2 |
653 | /* |
35a4481c |
654 | =for apidoc A|STRLEN|utf8_length|const U8 *s|const U8 *e |
b76347f2 |
655 | |
656 | Return the length of the UTF-8 char encoded string C<s> in characters. |
02eb7b47 |
657 | Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end |
658 | up past C<e>, croaks. |
b76347f2 |
659 | |
660 | =cut |
661 | */ |
662 | |
663 | STRLEN |
35a4481c |
664 | Perl_utf8_length(pTHX_ const U8 *s, const U8 *e) |
b76347f2 |
665 | { |
666 | STRLEN len = 0; |
667 | |
8850bf83 |
668 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
669 | * the bitops (especially ~) can create illegal UTF-8. |
670 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
671 | |
a3b680e6 |
672 | if (e < s) |
673 | goto warn_and_return; |
b76347f2 |
674 | while (s < e) { |
4373e329 |
675 | const U8 t = UTF8SKIP(s); |
901b21bf |
676 | if (e - s < t) { |
a3b680e6 |
677 | warn_and_return: |
901b21bf |
678 | if (ckWARN_d(WARN_UTF8)) { |
679 | if (PL_op) |
680 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
a3b680e6 |
681 | "%s in %s", unees, OP_DESC(PL_op)); |
901b21bf |
682 | else |
683 | Perl_warner(aTHX_ packWARN(WARN_UTF8), unees); |
684 | } |
685 | return len; |
686 | } |
b76347f2 |
687 | s += t; |
688 | len++; |
689 | } |
690 | |
691 | return len; |
692 | } |
693 | |
b06226ff |
694 | /* |
35a4481c |
695 | =for apidoc A|IV|utf8_distance|const U8 *a|const U8 *b |
b06226ff |
696 | |
1e54db1a |
697 | Returns the number of UTF-8 characters between the UTF-8 pointers C<a> |
b06226ff |
698 | and C<b>. |
699 | |
700 | WARNING: use only if you *know* that the pointers point inside the |
701 | same UTF-8 buffer. |
702 | |
37607a96 |
703 | =cut |
704 | */ |
a0ed51b3 |
705 | |
02eb7b47 |
706 | IV |
35a4481c |
707 | Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b) |
a0ed51b3 |
708 | { |
02eb7b47 |
709 | IV off = 0; |
710 | |
8850bf83 |
711 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
712 | * the bitops (especially ~) can create illegal UTF-8. |
713 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
714 | |
a0ed51b3 |
715 | if (a < b) { |
716 | while (a < b) { |
35a4481c |
717 | const U8 c = UTF8SKIP(a); |
a3b680e6 |
718 | if (b - a < c) |
719 | goto warn_and_return; |
02eb7b47 |
720 | a += c; |
a0ed51b3 |
721 | off--; |
722 | } |
723 | } |
724 | else { |
725 | while (b < a) { |
4373e329 |
726 | const U8 c = UTF8SKIP(b); |
02eb7b47 |
727 | |
901b21bf |
728 | if (a - b < c) { |
a3b680e6 |
729 | warn_and_return: |
901b21bf |
730 | if (ckWARN_d(WARN_UTF8)) { |
731 | if (PL_op) |
732 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
733 | "%s in %s", unees, OP_DESC(PL_op)); |
734 | else |
735 | Perl_warner(aTHX_ packWARN(WARN_UTF8), unees); |
736 | } |
737 | return off; |
738 | } |
02eb7b47 |
739 | b += c; |
a0ed51b3 |
740 | off++; |
741 | } |
742 | } |
02eb7b47 |
743 | |
a0ed51b3 |
744 | return off; |
745 | } |
746 | |
b06226ff |
747 | /* |
37607a96 |
748 | =for apidoc A|U8 *|utf8_hop|U8 *s|I32 off |
b06226ff |
749 | |
8850bf83 |
750 | Return the UTF-8 pointer C<s> displaced by C<off> characters, either |
751 | forward or backward. |
b06226ff |
752 | |
753 | WARNING: do not use the following unless you *know* C<off> is within |
8850bf83 |
754 | the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned |
755 | on the first byte of character or just after the last byte of a character. |
b06226ff |
756 | |
37607a96 |
757 | =cut |
758 | */ |
a0ed51b3 |
759 | |
760 | U8 * |
4373e329 |
761 | Perl_utf8_hop(pTHX_ const U8 *s, I32 off) |
a0ed51b3 |
762 | { |
8850bf83 |
763 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g |
764 | * the bitops (especially ~) can create illegal UTF-8. |
765 | * In other words: in Perl UTF-8 is not just for Unicode. */ |
766 | |
a0ed51b3 |
767 | if (off >= 0) { |
768 | while (off--) |
769 | s += UTF8SKIP(s); |
770 | } |
771 | else { |
772 | while (off++) { |
773 | s--; |
8850bf83 |
774 | while (UTF8_IS_CONTINUATION(*s)) |
775 | s--; |
a0ed51b3 |
776 | } |
777 | } |
4373e329 |
778 | return (U8 *)s; |
a0ed51b3 |
779 | } |
780 | |
6940069f |
781 | /* |
eebe1485 |
782 | =for apidoc A|U8 *|utf8_to_bytes|U8 *s|STRLEN *len |
6940069f |
783 | |
1e54db1a |
784 | Converts a string C<s> of length C<len> from UTF-8 into byte encoding. |
246fae53 |
785 | Unlike C<bytes_to_utf8>, this over-writes the original string, and |
786 | updates len to contain the new length. |
67e989fb |
787 | Returns zero on failure, setting C<len> to -1. |
6940069f |
788 | |
789 | =cut |
790 | */ |
791 | |
792 | U8 * |
37607a96 |
793 | Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len) |
6940069f |
794 | { |
6940069f |
795 | U8 *send; |
796 | U8 *d; |
dcad2880 |
797 | U8 *save = s; |
246fae53 |
798 | |
1e54db1a |
799 | /* ensure valid UTF-8 and chars < 256 before updating string */ |
dcad2880 |
800 | for (send = s + *len; s < send; ) { |
801 | U8 c = *s++; |
802 | |
1d72bdf6 |
803 | if (!UTF8_IS_INVARIANT(c) && |
804 | (!UTF8_IS_DOWNGRADEABLE_START(c) || (s >= send) |
805 | || !(c = *s++) || !UTF8_IS_CONTINUATION(c))) { |
dcad2880 |
806 | *len = -1; |
807 | return 0; |
808 | } |
246fae53 |
809 | } |
dcad2880 |
810 | |
811 | d = s = save; |
6940069f |
812 | while (s < send) { |
ed646e6e |
813 | STRLEN ulen; |
9041c2e3 |
814 | *d++ = (U8)utf8_to_uvchr(s, &ulen); |
ed646e6e |
815 | s += ulen; |
6940069f |
816 | } |
817 | *d = '\0'; |
246fae53 |
818 | *len = d - save; |
6940069f |
819 | return save; |
820 | } |
821 | |
822 | /* |
e1ec3a88 |
823 | =for apidoc A|U8 *|bytes_from_utf8|const U8 *s|STRLEN *len|bool *is_utf8 |
f9a63242 |
824 | |
1e54db1a |
825 | Converts a string C<s> of length C<len> from UTF-8 into byte encoding. |
35a4481c |
826 | Unlike C<utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to |
ef9edfd0 |
827 | the newly-created string, and updates C<len> to contain the new |
828 | length. Returns the original string if no conversion occurs, C<len> |
829 | is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to |
830 | 0 if C<s> is converted or contains all 7bit characters. |
f9a63242 |
831 | |
37607a96 |
832 | =cut |
833 | */ |
f9a63242 |
834 | |
835 | U8 * |
e1ec3a88 |
836 | Perl_bytes_from_utf8(pTHX_ const U8 *s, STRLEN *len, bool *is_utf8) |
f9a63242 |
837 | { |
f9a63242 |
838 | U8 *d; |
e1ec3a88 |
839 | const U8 *start = s; |
840 | const U8 *send; |
f9a63242 |
841 | I32 count = 0; |
842 | |
843 | if (!*is_utf8) |
73d840c0 |
844 | return (U8 *)start; |
f9a63242 |
845 | |
1e54db1a |
846 | /* ensure valid UTF-8 and chars < 256 before converting string */ |
f9a63242 |
847 | for (send = s + *len; s < send;) { |
e1ec3a88 |
848 | U8 c = *s++; |
1d72bdf6 |
849 | if (!UTF8_IS_INVARIANT(c)) { |
db42d148 |
850 | if (UTF8_IS_DOWNGRADEABLE_START(c) && s < send && |
851 | (c = *s++) && UTF8_IS_CONTINUATION(c)) |
852 | count++; |
853 | else |
73d840c0 |
854 | return (U8 *)start; |
db42d148 |
855 | } |
f9a63242 |
856 | } |
857 | |
858 | *is_utf8 = 0; |
859 | |
f9a63242 |
860 | Newz(801, d, (*len) - count + 1, U8); |
ef9edfd0 |
861 | s = start; start = d; |
f9a63242 |
862 | while (s < send) { |
863 | U8 c = *s++; |
c4d5f83a |
864 | if (!UTF8_IS_INVARIANT(c)) { |
865 | /* Then it is two-byte encoded */ |
866 | c = UTF8_ACCUMULATE(NATIVE_TO_UTF(c), *s++); |
867 | c = ASCII_TO_NATIVE(c); |
868 | } |
869 | *d++ = c; |
f9a63242 |
870 | } |
871 | *d = '\0'; |
872 | *len = d - start; |
73d840c0 |
873 | return (U8 *)start; |
f9a63242 |
874 | } |
875 | |
876 | /* |
35a4481c |
877 | =for apidoc A|U8 *|bytes_to_utf8|const U8 *s|STRLEN *len |
6940069f |
878 | |
1e54db1a |
879 | Converts a string C<s> of length C<len> from ASCII into UTF-8 encoding. |
6662521e |
880 | Returns a pointer to the newly-created string, and sets C<len> to |
881 | reflect the new length. |
6940069f |
882 | |
1e54db1a |
883 | If you want to convert to UTF-8 from other encodings than ASCII, |
c9ada85f |
884 | see sv_recode_to_utf8(). |
885 | |
497711e7 |
886 | =cut |
6940069f |
887 | */ |
888 | |
889 | U8* |
35a4481c |
890 | Perl_bytes_to_utf8(pTHX_ const U8 *s, STRLEN *len) |
6940069f |
891 | { |
35a4481c |
892 | const U8 * const send = s + (*len); |
6940069f |
893 | U8 *d; |
894 | U8 *dst; |
6940069f |
895 | |
6662521e |
896 | Newz(801, d, (*len) * 2 + 1, U8); |
6940069f |
897 | dst = d; |
898 | |
899 | while (s < send) { |
35a4481c |
900 | const UV uv = NATIVE_TO_ASCII(*s++); |
c4d5f83a |
901 | if (UNI_IS_INVARIANT(uv)) |
eb160463 |
902 | *d++ = (U8)UTF_TO_NATIVE(uv); |
6940069f |
903 | else { |
eb160463 |
904 | *d++ = (U8)UTF8_EIGHT_BIT_HI(uv); |
905 | *d++ = (U8)UTF8_EIGHT_BIT_LO(uv); |
6940069f |
906 | } |
907 | } |
908 | *d = '\0'; |
6662521e |
909 | *len = d-dst; |
6940069f |
910 | return dst; |
911 | } |
912 | |
a0ed51b3 |
913 | /* |
dea0fc0b |
914 | * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8. |
a0ed51b3 |
915 | * |
916 | * Destination must be pre-extended to 3/2 source. Do not use in-place. |
917 | * We optimize for native, for obvious reasons. */ |
918 | |
919 | U8* |
dea0fc0b |
920 | Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
921 | { |
dea0fc0b |
922 | U8* pend; |
923 | U8* dstart = d; |
924 | |
1de9afcd |
925 | if (bytelen == 1 && p[0] == 0) { /* Be understanding. */ |
926 | d[0] = 0; |
927 | *newlen = 1; |
928 | return d; |
929 | } |
930 | |
dea0fc0b |
931 | if (bytelen & 1) |
014ead4b |
932 | Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen %"UVf, (UV)bytelen); |
dea0fc0b |
933 | |
934 | pend = p + bytelen; |
935 | |
a0ed51b3 |
936 | while (p < pend) { |
dea0fc0b |
937 | UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */ |
938 | p += 2; |
a0ed51b3 |
939 | if (uv < 0x80) { |
eb160463 |
940 | *d++ = (U8)uv; |
a0ed51b3 |
941 | continue; |
942 | } |
943 | if (uv < 0x800) { |
eb160463 |
944 | *d++ = (U8)(( uv >> 6) | 0xc0); |
945 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
946 | continue; |
947 | } |
948 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ |
30f84f9e |
949 | UV low = (p[0] << 8) + p[1]; |
950 | p += 2; |
dea0fc0b |
951 | if (low < 0xdc00 || low >= 0xdfff) |
952 | Perl_croak(aTHX_ "Malformed UTF-16 surrogate"); |
a0ed51b3 |
953 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
954 | } |
955 | if (uv < 0x10000) { |
eb160463 |
956 | *d++ = (U8)(( uv >> 12) | 0xe0); |
957 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
958 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
959 | continue; |
960 | } |
961 | else { |
eb160463 |
962 | *d++ = (U8)(( uv >> 18) | 0xf0); |
963 | *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80); |
964 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); |
965 | *d++ = (U8)(( uv & 0x3f) | 0x80); |
a0ed51b3 |
966 | continue; |
967 | } |
968 | } |
dea0fc0b |
969 | *newlen = d - dstart; |
a0ed51b3 |
970 | return d; |
971 | } |
972 | |
973 | /* Note: this one is slightly destructive of the source. */ |
974 | |
975 | U8* |
dea0fc0b |
976 | Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 |
977 | { |
978 | U8* s = (U8*)p; |
979 | U8* send = s + bytelen; |
980 | while (s < send) { |
981 | U8 tmp = s[0]; |
982 | s[0] = s[1]; |
983 | s[1] = tmp; |
984 | s += 2; |
985 | } |
dea0fc0b |
986 | return utf16_to_utf8(p, d, bytelen, newlen); |
a0ed51b3 |
987 | } |
988 | |
989 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ |
990 | |
991 | bool |
84afefe6 |
992 | Perl_is_uni_alnum(pTHX_ UV c) |
a0ed51b3 |
993 | { |
89ebb4a3 |
994 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
995 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
996 | return is_utf8_alnum(tmpbuf); |
997 | } |
998 | |
999 | bool |
84afefe6 |
1000 | Perl_is_uni_alnumc(pTHX_ UV c) |
b8c5462f |
1001 | { |
89ebb4a3 |
1002 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1003 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
1004 | return is_utf8_alnumc(tmpbuf); |
1005 | } |
1006 | |
1007 | bool |
84afefe6 |
1008 | Perl_is_uni_idfirst(pTHX_ UV c) |
a0ed51b3 |
1009 | { |
89ebb4a3 |
1010 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1011 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1012 | return is_utf8_idfirst(tmpbuf); |
1013 | } |
1014 | |
1015 | bool |
84afefe6 |
1016 | Perl_is_uni_alpha(pTHX_ UV c) |
a0ed51b3 |
1017 | { |
89ebb4a3 |
1018 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1019 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1020 | return is_utf8_alpha(tmpbuf); |
1021 | } |
1022 | |
1023 | bool |
84afefe6 |
1024 | Perl_is_uni_ascii(pTHX_ UV c) |
4d61ec05 |
1025 | { |
89ebb4a3 |
1026 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1027 | uvchr_to_utf8(tmpbuf, c); |
4d61ec05 |
1028 | return is_utf8_ascii(tmpbuf); |
1029 | } |
1030 | |
1031 | bool |
84afefe6 |
1032 | Perl_is_uni_space(pTHX_ UV c) |
a0ed51b3 |
1033 | { |
89ebb4a3 |
1034 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1035 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1036 | return is_utf8_space(tmpbuf); |
1037 | } |
1038 | |
1039 | bool |
84afefe6 |
1040 | Perl_is_uni_digit(pTHX_ UV c) |
a0ed51b3 |
1041 | { |
89ebb4a3 |
1042 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1043 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1044 | return is_utf8_digit(tmpbuf); |
1045 | } |
1046 | |
1047 | bool |
84afefe6 |
1048 | Perl_is_uni_upper(pTHX_ UV c) |
a0ed51b3 |
1049 | { |
89ebb4a3 |
1050 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1051 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1052 | return is_utf8_upper(tmpbuf); |
1053 | } |
1054 | |
1055 | bool |
84afefe6 |
1056 | Perl_is_uni_lower(pTHX_ UV c) |
a0ed51b3 |
1057 | { |
89ebb4a3 |
1058 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1059 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1060 | return is_utf8_lower(tmpbuf); |
1061 | } |
1062 | |
1063 | bool |
84afefe6 |
1064 | Perl_is_uni_cntrl(pTHX_ UV c) |
b8c5462f |
1065 | { |
89ebb4a3 |
1066 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1067 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
1068 | return is_utf8_cntrl(tmpbuf); |
1069 | } |
1070 | |
1071 | bool |
84afefe6 |
1072 | Perl_is_uni_graph(pTHX_ UV c) |
b8c5462f |
1073 | { |
89ebb4a3 |
1074 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1075 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
1076 | return is_utf8_graph(tmpbuf); |
1077 | } |
1078 | |
1079 | bool |
84afefe6 |
1080 | Perl_is_uni_print(pTHX_ UV c) |
a0ed51b3 |
1081 | { |
89ebb4a3 |
1082 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1083 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 |
1084 | return is_utf8_print(tmpbuf); |
1085 | } |
1086 | |
b8c5462f |
1087 | bool |
84afefe6 |
1088 | Perl_is_uni_punct(pTHX_ UV c) |
b8c5462f |
1089 | { |
89ebb4a3 |
1090 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 |
1091 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f |
1092 | return is_utf8_punct(tmpbuf); |
1093 | } |
1094 | |
4d61ec05 |
1095 | bool |
84afefe6 |
1096 | Perl_is_uni_xdigit(pTHX_ UV c) |
4d61ec05 |
1097 | { |
89ebb4a3 |
1098 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
230880c1 |
1099 | uvchr_to_utf8(tmpbuf, c); |
4d61ec05 |
1100 | return is_utf8_xdigit(tmpbuf); |
1101 | } |
1102 | |
84afefe6 |
1103 | UV |
1104 | Perl_to_uni_upper(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
1105 | { |
0ebc6274 |
1106 | uvchr_to_utf8(p, c); |
1107 | return to_utf8_upper(p, p, lenp); |
a0ed51b3 |
1108 | } |
1109 | |
84afefe6 |
1110 | UV |
1111 | Perl_to_uni_title(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
1112 | { |
0ebc6274 |
1113 | uvchr_to_utf8(p, c); |
1114 | return to_utf8_title(p, p, lenp); |
a0ed51b3 |
1115 | } |
1116 | |
84afefe6 |
1117 | UV |
1118 | Perl_to_uni_lower(pTHX_ UV c, U8* p, STRLEN *lenp) |
a0ed51b3 |
1119 | { |
0ebc6274 |
1120 | uvchr_to_utf8(p, c); |
1121 | return to_utf8_lower(p, p, lenp); |
a0ed51b3 |
1122 | } |
1123 | |
84afefe6 |
1124 | UV |
1125 | Perl_to_uni_fold(pTHX_ UV c, U8* p, STRLEN *lenp) |
1126 | { |
0ebc6274 |
1127 | uvchr_to_utf8(p, c); |
1128 | return to_utf8_fold(p, p, lenp); |
84afefe6 |
1129 | } |
1130 | |
a0ed51b3 |
1131 | /* for now these all assume no locale info available for Unicode > 255 */ |
1132 | |
1133 | bool |
84afefe6 |
1134 | Perl_is_uni_alnum_lc(pTHX_ UV c) |
a0ed51b3 |
1135 | { |
1136 | return is_uni_alnum(c); /* XXX no locale support yet */ |
1137 | } |
1138 | |
1139 | bool |
84afefe6 |
1140 | Perl_is_uni_alnumc_lc(pTHX_ UV c) |
b8c5462f |
1141 | { |
1142 | return is_uni_alnumc(c); /* XXX no locale support yet */ |
1143 | } |
1144 | |
1145 | bool |
84afefe6 |
1146 | Perl_is_uni_idfirst_lc(pTHX_ UV c) |
a0ed51b3 |
1147 | { |
1148 | return is_uni_idfirst(c); /* XXX no locale support yet */ |
1149 | } |
1150 | |
1151 | bool |
84afefe6 |
1152 | Perl_is_uni_alpha_lc(pTHX_ UV c) |
a0ed51b3 |
1153 | { |
1154 | return is_uni_alpha(c); /* XXX no locale support yet */ |
1155 | } |
1156 | |
1157 | bool |
84afefe6 |
1158 | Perl_is_uni_ascii_lc(pTHX_ UV c) |
4d61ec05 |
1159 | { |
1160 | return is_uni_ascii(c); /* XXX no locale support yet */ |
1161 | } |
1162 | |
1163 | bool |
84afefe6 |
1164 | Perl_is_uni_space_lc(pTHX_ UV c) |
a0ed51b3 |
1165 | { |
1166 | return is_uni_space(c); /* XXX no locale support yet */ |
1167 | } |
1168 | |
1169 | bool |
84afefe6 |
1170 | Perl_is_uni_digit_lc(pTHX_ UV c) |
a0ed51b3 |
1171 | { |
1172 | return is_uni_digit(c); /* XXX no locale support yet */ |
1173 | } |
1174 | |
1175 | bool |
84afefe6 |
1176 | Perl_is_uni_upper_lc(pTHX_ UV c) |
a0ed51b3 |
1177 | { |
1178 | return is_uni_upper(c); /* XXX no locale support yet */ |
1179 | } |
1180 | |
1181 | bool |
84afefe6 |
1182 | Perl_is_uni_lower_lc(pTHX_ UV c) |
a0ed51b3 |
1183 | { |
1184 | return is_uni_lower(c); /* XXX no locale support yet */ |
1185 | } |
1186 | |
1187 | bool |
84afefe6 |
1188 | Perl_is_uni_cntrl_lc(pTHX_ UV c) |
b8c5462f |
1189 | { |
1190 | return is_uni_cntrl(c); /* XXX no locale support yet */ |
1191 | } |
1192 | |
1193 | bool |
84afefe6 |
1194 | Perl_is_uni_graph_lc(pTHX_ UV c) |
b8c5462f |
1195 | { |
1196 | return is_uni_graph(c); /* XXX no locale support yet */ |
1197 | } |
1198 | |
1199 | bool |
84afefe6 |
1200 | Perl_is_uni_print_lc(pTHX_ UV c) |
a0ed51b3 |
1201 | { |
1202 | return is_uni_print(c); /* XXX no locale support yet */ |
1203 | } |
1204 | |
b8c5462f |
1205 | bool |
84afefe6 |
1206 | Perl_is_uni_punct_lc(pTHX_ UV c) |
b8c5462f |
1207 | { |
1208 | return is_uni_punct(c); /* XXX no locale support yet */ |
1209 | } |
1210 | |
4d61ec05 |
1211 | bool |
84afefe6 |
1212 | Perl_is_uni_xdigit_lc(pTHX_ UV c) |
4d61ec05 |
1213 | { |
1214 | return is_uni_xdigit(c); /* XXX no locale support yet */ |
1215 | } |
1216 | |
b7ac61fa |
1217 | U32 |
1218 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
1219 | { |
ee099d14 |
1220 | /* XXX returns only the first character -- do not use XXX */ |
1221 | /* XXX no locale support yet */ |
1222 | STRLEN len; |
89ebb4a3 |
1223 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
ee099d14 |
1224 | return (U32)to_uni_upper(c, tmpbuf, &len); |
b7ac61fa |
1225 | } |
1226 | |
1227 | U32 |
1228 | Perl_to_uni_title_lc(pTHX_ U32 c) |
1229 | { |
ee099d14 |
1230 | /* XXX returns only the first character XXX -- do not use XXX */ |
1231 | /* XXX no locale support yet */ |
1232 | STRLEN len; |
89ebb4a3 |
1233 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
ee099d14 |
1234 | return (U32)to_uni_title(c, tmpbuf, &len); |
b7ac61fa |
1235 | } |
1236 | |
1237 | U32 |
1238 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
1239 | { |
ee099d14 |
1240 | /* XXX returns only the first character -- do not use XXX */ |
1241 | /* XXX no locale support yet */ |
1242 | STRLEN len; |
89ebb4a3 |
1243 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
ee099d14 |
1244 | return (U32)to_uni_lower(c, tmpbuf, &len); |
b7ac61fa |
1245 | } |
1246 | |
a0ed51b3 |
1247 | bool |
7fc63493 |
1248 | Perl_is_utf8_alnum(pTHX_ const U8 *p) |
a0ed51b3 |
1249 | { |
386d01d6 |
1250 | if (!is_utf8_char(p)) |
1251 | return FALSE; |
a0ed51b3 |
1252 | if (!PL_utf8_alnum) |
289d4f09 |
1253 | /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true |
1254 | * descendant of isalnum(3), in other words, it doesn't |
1255 | * contain the '_'. --jhi */ |
1256 | PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0); |
eb160463 |
1257 | return swash_fetch(PL_utf8_alnum, p, TRUE) != 0; |
a0ed51b3 |
1258 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ |
1259 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1260 | if (!PL_utf8_alnum) |
1261 | PL_utf8_alnum = swash_init("utf8", "", |
1262 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
eb160463 |
1263 | return swash_fetch(PL_utf8_alnum, p, TRUE) != 0; |
a0ed51b3 |
1264 | #endif |
1265 | } |
1266 | |
1267 | bool |
7fc63493 |
1268 | Perl_is_utf8_alnumc(pTHX_ const U8 *p) |
b8c5462f |
1269 | { |
386d01d6 |
1270 | if (!is_utf8_char(p)) |
1271 | return FALSE; |
b8c5462f |
1272 | if (!PL_utf8_alnum) |
1273 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); |
eb160463 |
1274 | return swash_fetch(PL_utf8_alnum, p, TRUE) != 0; |
b8c5462f |
1275 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ |
1276 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
1277 | if (!PL_utf8_alnum) |
1278 | PL_utf8_alnum = swash_init("utf8", "", |
1279 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
eb160463 |
1280 | return swash_fetch(PL_utf8_alnum, p, TRUE) != 0; |
b8c5462f |
1281 | #endif |
1282 | } |
1283 | |
1284 | bool |
7fc63493 |
1285 | Perl_is_utf8_idfirst(pTHX_ const U8 *p) /* The naming is historical. */ |
a0ed51b3 |
1286 | { |
82686b01 |
1287 | if (*p == '_') |
1288 | return TRUE; |
1289 | if (!is_utf8_char(p)) |
1290 | return FALSE; |
1291 | if (!PL_utf8_idstart) /* is_utf8_idstart would be more logical. */ |
1292 | PL_utf8_idstart = swash_init("utf8", "IdStart", &PL_sv_undef, 0, 0); |
eb160463 |
1293 | return swash_fetch(PL_utf8_idstart, p, TRUE) != 0; |
82686b01 |
1294 | } |
1295 | |
1296 | bool |
7fc63493 |
1297 | Perl_is_utf8_idcont(pTHX_ const U8 *p) |
82686b01 |
1298 | { |
1299 | if (*p == '_') |
1300 | return TRUE; |
1301 | if (!is_utf8_char(p)) |
1302 | return FALSE; |
1303 | if (!PL_utf8_idcont) |
1304 | PL_utf8_idcont = swash_init("utf8", "IdContinue", &PL_sv_undef, 0, 0); |
eb160463 |
1305 | return swash_fetch(PL_utf8_idcont, p, TRUE) != 0; |
a0ed51b3 |
1306 | } |
1307 | |
1308 | bool |
7fc63493 |
1309 | Perl_is_utf8_alpha(pTHX_ const U8 *p) |
a0ed51b3 |
1310 | { |
386d01d6 |
1311 | if (!is_utf8_char(p)) |
1312 | return FALSE; |
a0ed51b3 |
1313 | if (!PL_utf8_alpha) |
e24b16f9 |
1314 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
eb160463 |
1315 | return swash_fetch(PL_utf8_alpha, p, TRUE) != 0; |
a0ed51b3 |
1316 | } |
1317 | |
1318 | bool |
7fc63493 |
1319 | Perl_is_utf8_ascii(pTHX_ const U8 *p) |
b8c5462f |
1320 | { |
386d01d6 |
1321 | if (!is_utf8_char(p)) |
1322 | return FALSE; |
b8c5462f |
1323 | if (!PL_utf8_ascii) |
1324 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); |
eb160463 |
1325 | return swash_fetch(PL_utf8_ascii, p, TRUE) != 0; |
b8c5462f |
1326 | } |
1327 | |
1328 | bool |
7fc63493 |
1329 | Perl_is_utf8_space(pTHX_ const U8 *p) |
a0ed51b3 |
1330 | { |
386d01d6 |
1331 | if (!is_utf8_char(p)) |
1332 | return FALSE; |
a0ed51b3 |
1333 | if (!PL_utf8_space) |
3bec3564 |
1334 | PL_utf8_space = swash_init("utf8", "IsSpacePerl", &PL_sv_undef, 0, 0); |
eb160463 |
1335 | return swash_fetch(PL_utf8_space, p, TRUE) != 0; |
a0ed51b3 |
1336 | } |
1337 | |
1338 | bool |
7fc63493 |
1339 | Perl_is_utf8_digit(pTHX_ const U8 *p) |
a0ed51b3 |
1340 | { |
386d01d6 |
1341 | if (!is_utf8_char(p)) |
1342 | return FALSE; |
a0ed51b3 |
1343 | if (!PL_utf8_digit) |
e24b16f9 |
1344 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
eb160463 |
1345 | return swash_fetch(PL_utf8_digit, p, TRUE) != 0; |
a0ed51b3 |
1346 | } |
1347 | |
1348 | bool |
7fc63493 |
1349 | Perl_is_utf8_upper(pTHX_ const U8 *p) |
a0ed51b3 |
1350 | { |
386d01d6 |
1351 | if (!is_utf8_char(p)) |
1352 | return FALSE; |
a0ed51b3 |
1353 | if (!PL_utf8_upper) |
c65e4d19 |
1354 | PL_utf8_upper = swash_init("utf8", "IsUppercase", &PL_sv_undef, 0, 0); |
eb160463 |
1355 | return swash_fetch(PL_utf8_upper, p, TRUE) != 0; |
a0ed51b3 |
1356 | } |
1357 | |
1358 | bool |
7fc63493 |
1359 | Perl_is_utf8_lower(pTHX_ const U8 *p) |
a0ed51b3 |
1360 | { |
386d01d6 |
1361 | if (!is_utf8_char(p)) |
1362 | return FALSE; |
a0ed51b3 |
1363 | if (!PL_utf8_lower) |
c65e4d19 |
1364 | PL_utf8_lower = swash_init("utf8", "IsLowercase", &PL_sv_undef, 0, 0); |
eb160463 |
1365 | return swash_fetch(PL_utf8_lower, p, TRUE) != 0; |
a0ed51b3 |
1366 | } |
1367 | |
1368 | bool |
7fc63493 |
1369 | Perl_is_utf8_cntrl(pTHX_ const U8 *p) |
b8c5462f |
1370 | { |
386d01d6 |
1371 | if (!is_utf8_char(p)) |
1372 | return FALSE; |
b8c5462f |
1373 | if (!PL_utf8_cntrl) |
1374 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); |
eb160463 |
1375 | return swash_fetch(PL_utf8_cntrl, p, TRUE) != 0; |
b8c5462f |
1376 | } |
1377 | |
1378 | bool |
7fc63493 |
1379 | Perl_is_utf8_graph(pTHX_ const U8 *p) |
b8c5462f |
1380 | { |
386d01d6 |
1381 | if (!is_utf8_char(p)) |
1382 | return FALSE; |
b8c5462f |
1383 | if (!PL_utf8_graph) |
1384 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); |
eb160463 |
1385 | return swash_fetch(PL_utf8_graph, p, TRUE) != 0; |
b8c5462f |
1386 | } |
1387 | |
1388 | bool |
7fc63493 |
1389 | Perl_is_utf8_print(pTHX_ const U8 *p) |
a0ed51b3 |
1390 | { |
386d01d6 |
1391 | if (!is_utf8_char(p)) |
1392 | return FALSE; |
a0ed51b3 |
1393 | if (!PL_utf8_print) |
e24b16f9 |
1394 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
eb160463 |
1395 | return swash_fetch(PL_utf8_print, p, TRUE) != 0; |
a0ed51b3 |
1396 | } |
1397 | |
1398 | bool |
7fc63493 |
1399 | Perl_is_utf8_punct(pTHX_ const U8 *p) |
b8c5462f |
1400 | { |
386d01d6 |
1401 | if (!is_utf8_char(p)) |
1402 | return FALSE; |
b8c5462f |
1403 | if (!PL_utf8_punct) |
1404 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); |
eb160463 |
1405 | return swash_fetch(PL_utf8_punct, p, TRUE) != 0; |
b8c5462f |
1406 | } |
1407 | |
1408 | bool |
7fc63493 |
1409 | Perl_is_utf8_xdigit(pTHX_ const U8 *p) |
b8c5462f |
1410 | { |
386d01d6 |
1411 | if (!is_utf8_char(p)) |
1412 | return FALSE; |
b8c5462f |
1413 | if (!PL_utf8_xdigit) |
1414 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); |
eb160463 |
1415 | return swash_fetch(PL_utf8_xdigit, p, TRUE) != 0; |
b8c5462f |
1416 | } |
1417 | |
1418 | bool |
7fc63493 |
1419 | Perl_is_utf8_mark(pTHX_ const U8 *p) |
a0ed51b3 |
1420 | { |
386d01d6 |
1421 | if (!is_utf8_char(p)) |
1422 | return FALSE; |
a0ed51b3 |
1423 | if (!PL_utf8_mark) |
e24b16f9 |
1424 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
eb160463 |
1425 | return swash_fetch(PL_utf8_mark, p, TRUE) != 0; |
a0ed51b3 |
1426 | } |
1427 | |
6b5c0936 |
1428 | /* |
1429 | =for apidoc A|UV|to_utf8_case|U8 *p|U8* ustrp|STRLEN *lenp|SV **swash|char *normal|char *special |
1430 | |
1431 | The "p" contains the pointer to the UTF-8 string encoding |
1432 | the character that is being converted. |
1433 | |
1434 | The "ustrp" is a pointer to the character buffer to put the |
1435 | conversion result to. The "lenp" is a pointer to the length |
1436 | of the result. |
1437 | |
0134edef |
1438 | The "swashp" is a pointer to the swash to use. |
6b5c0936 |
1439 | |
0134edef |
1440 | Both the special and normal mappings are stored lib/unicore/To/Foo.pl, |
1441 | and loaded by SWASHGET, using lib/utf8_heavy.pl. The special (usually, |
1442 | but not always, a multicharacter mapping), is tried first. |
6b5c0936 |
1443 | |
0134edef |
1444 | The "special" is a string like "utf8::ToSpecLower", which means the |
1445 | hash %utf8::ToSpecLower. The access to the hash is through |
1446 | Perl_to_utf8_case(). |
6b5c0936 |
1447 | |
0134edef |
1448 | The "normal" is a string like "ToLower" which means the swash |
1449 | %utf8::ToLower. |
1450 | |
1451 | =cut */ |
6b5c0936 |
1452 | |
2104c8d9 |
1453 | UV |
e1ec3a88 |
1454 | Perl_to_utf8_case(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp, SV **swashp, const char *normal, const char *special) |
a0ed51b3 |
1455 | { |
89ebb4a3 |
1456 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
0134edef |
1457 | STRLEN len = 0; |
a0ed51b3 |
1458 | |
7fc63493 |
1459 | const UV uv0 = utf8_to_uvchr(p, 0); |
1feea2c7 |
1460 | /* The NATIVE_TO_UNI() and UNI_TO_NATIVE() mappings |
1461 | * are necessary in EBCDIC, they are redundant no-ops |
1462 | * in ASCII-ish platforms, and hopefully optimized away. */ |
f54cb97a |
1463 | const UV uv1 = NATIVE_TO_UNI(uv0); |
1feea2c7 |
1464 | uvuni_to_utf8(tmpbuf, uv1); |
0134edef |
1465 | |
1466 | if (!*swashp) /* load on-demand */ |
1467 | *swashp = swash_init("utf8", normal, &PL_sv_undef, 4, 0); |
1468 | |
b08cf34e |
1469 | /* The 0xDF is the only special casing Unicode code point below 0x100. */ |
1470 | if (special && (uv1 == 0xDF || uv1 > 0xFF)) { |
0134edef |
1471 | /* It might be "special" (sometimes, but not always, |
2a37f04d |
1472 | * a multicharacter mapping) */ |
983ffd37 |
1473 | HV *hv; |
b08cf34e |
1474 | SV **svp; |
1475 | |
1476 | if ((hv = get_hv(special, FALSE)) && |
1477 | (svp = hv_fetch(hv, (const char*)tmpbuf, UNISKIP(uv1), FALSE)) && |
1478 | (*svp)) { |
cfd0369c |
1479 | const char *s; |
47654450 |
1480 | |
cfd0369c |
1481 | s = SvPV_const(*svp, len); |
47654450 |
1482 | if (len == 1) |
1483 | len = uvuni_to_utf8(ustrp, NATIVE_TO_UNI(*(U8*)s)) - ustrp; |
2a37f04d |
1484 | else { |
2f9475ad |
1485 | #ifdef EBCDIC |
1486 | /* If we have EBCDIC we need to remap the characters |
1487 | * since any characters in the low 256 are Unicode |
1488 | * code points, not EBCDIC. */ |
7cda7a3d |
1489 | U8 *t = (U8*)s, *tend = t + len, *d; |
2f9475ad |
1490 | |
1491 | d = tmpbuf; |
b08cf34e |
1492 | if (SvUTF8(*svp)) { |
2f9475ad |
1493 | STRLEN tlen = 0; |
1494 | |
1495 | while (t < tend) { |
1496 | UV c = utf8_to_uvchr(t, &tlen); |
1497 | if (tlen > 0) { |
1498 | d = uvchr_to_utf8(d, UNI_TO_NATIVE(c)); |
1499 | t += tlen; |
1500 | } |
1501 | else |
1502 | break; |
1503 | } |
1504 | } |
1505 | else { |
36fec512 |
1506 | while (t < tend) { |
1507 | d = uvchr_to_utf8(d, UNI_TO_NATIVE(*t)); |
1508 | t++; |
1509 | } |
2f9475ad |
1510 | } |
1511 | len = d - tmpbuf; |
1512 | Copy(tmpbuf, ustrp, len, U8); |
1513 | #else |
d2dcd0fb |
1514 | Copy(s, ustrp, len, U8); |
2f9475ad |
1515 | #endif |
29e98929 |
1516 | } |
983ffd37 |
1517 | } |
0134edef |
1518 | } |
1519 | |
1520 | if (!len && *swashp) { |
1521 | UV uv2 = swash_fetch(*swashp, tmpbuf, TRUE); |
1522 | |
1523 | if (uv2) { |
1524 | /* It was "normal" (a single character mapping). */ |
1525 | UV uv3 = UNI_TO_NATIVE(uv2); |
1526 | |
e9101d72 |
1527 | len = uvchr_to_utf8(ustrp, uv3) - ustrp; |
2a37f04d |
1528 | } |
1529 | } |
1feea2c7 |
1530 | |
0134edef |
1531 | if (!len) /* Neither: just copy. */ |
1532 | len = uvchr_to_utf8(ustrp, uv0) - ustrp; |
1533 | |
2a37f04d |
1534 | if (lenp) |
1535 | *lenp = len; |
1536 | |
0134edef |
1537 | return len ? utf8_to_uvchr(ustrp, 0) : 0; |
a0ed51b3 |
1538 | } |
1539 | |
d3e79532 |
1540 | /* |
7fc63493 |
1541 | =for apidoc A|UV|to_utf8_upper|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 |
1542 | |
1543 | Convert the UTF-8 encoded character at p to its uppercase version and |
1544 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
89ebb4a3 |
1545 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since |
1546 | the uppercase version may be longer than the original character. |
d3e79532 |
1547 | |
1548 | The first character of the uppercased version is returned |
1549 | (but note, as explained above, that there may be more.) |
1550 | |
1551 | =cut */ |
1552 | |
2104c8d9 |
1553 | UV |
7fc63493 |
1554 | Perl_to_utf8_upper(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1555 | { |
983ffd37 |
1556 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1557 | &PL_utf8_toupper, "ToUpper", "utf8::ToSpecUpper"); |
983ffd37 |
1558 | } |
a0ed51b3 |
1559 | |
d3e79532 |
1560 | /* |
7fc63493 |
1561 | =for apidoc A|UV|to_utf8_title|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 |
1562 | |
1563 | Convert the UTF-8 encoded character at p to its titlecase version and |
1564 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
89ebb4a3 |
1565 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the |
1566 | titlecase version may be longer than the original character. |
d3e79532 |
1567 | |
1568 | The first character of the titlecased version is returned |
1569 | (but note, as explained above, that there may be more.) |
1570 | |
1571 | =cut */ |
1572 | |
983ffd37 |
1573 | UV |
7fc63493 |
1574 | Perl_to_utf8_title(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
983ffd37 |
1575 | { |
1576 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1577 | &PL_utf8_totitle, "ToTitle", "utf8::ToSpecTitle"); |
a0ed51b3 |
1578 | } |
1579 | |
d3e79532 |
1580 | /* |
7fc63493 |
1581 | =for apidoc A|UV|to_utf8_lower|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 |
1582 | |
1583 | Convert the UTF-8 encoded character at p to its lowercase version and |
1584 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
89ebb4a3 |
1585 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the |
1586 | lowercase version may be longer than the original character. |
d3e79532 |
1587 | |
1588 | The first character of the lowercased version is returned |
1589 | (but note, as explained above, that there may be more.) |
1590 | |
1591 | =cut */ |
1592 | |
2104c8d9 |
1593 | UV |
7fc63493 |
1594 | Perl_to_utf8_lower(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 |
1595 | { |
983ffd37 |
1596 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 |
1597 | &PL_utf8_tolower, "ToLower", "utf8::ToSpecLower"); |
1598 | } |
1599 | |
d3e79532 |
1600 | /* |
7fc63493 |
1601 | =for apidoc A|UV|to_utf8_fold|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 |
1602 | |
1603 | Convert the UTF-8 encoded character at p to its foldcase version and |
1604 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note |
89ebb4a3 |
1605 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the |
d3e79532 |
1606 | foldcase version may be longer than the original character (up to |
1607 | three characters). |
1608 | |
1609 | The first character of the foldcased version is returned |
1610 | (but note, as explained above, that there may be more.) |
1611 | |
1612 | =cut */ |
1613 | |
b4e400f9 |
1614 | UV |
7fc63493 |
1615 | Perl_to_utf8_fold(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
b4e400f9 |
1616 | { |
1617 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
1618 | &PL_utf8_tofold, "ToFold", "utf8::ToSpecFold"); |
a0ed51b3 |
1619 | } |
1620 | |
1621 | /* a "swash" is a swatch hash */ |
1622 | |
1623 | SV* |
7fc63493 |
1624 | Perl_swash_init(pTHX_ const char* pkg, const char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 |
1625 | { |
27da23d5 |
1626 | dVAR; |
a0ed51b3 |
1627 | SV* retval; |
243b1711 |
1628 | SV* tokenbufsv = sv_newmortal(); |
8e84507e |
1629 | dSP; |
7fc63493 |
1630 | const size_t pkg_len = strlen(pkg); |
1631 | const size_t name_len = strlen(name); |
71bed85a |
1632 | HV *stash = gv_stashpvn(pkg, pkg_len, FALSE); |
f8be5cf0 |
1633 | SV* errsv_save; |
ce3b816e |
1634 | |
96ca9f55 |
1635 | PUSHSTACKi(PERLSI_MAGIC); |
1636 | ENTER; |
1637 | SAVEI32(PL_hints); |
1638 | PL_hints = 0; |
1639 | save_re_context(); |
1b026014 |
1640 | if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */ |
ce3b816e |
1641 | ENTER; |
f8be5cf0 |
1642 | errsv_save = newSVsv(ERRSV); |
71bed85a |
1643 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpvn(pkg,pkg_len), |
1644 | Nullsv); |
f8be5cf0 |
1645 | if (!SvTRUE(ERRSV)) |
1646 | sv_setsv(ERRSV, errsv_save); |
1647 | SvREFCNT_dec(errsv_save); |
ce3b816e |
1648 | LEAVE; |
1649 | } |
1650 | SPAGAIN; |
a0ed51b3 |
1651 | PUSHMARK(SP); |
1652 | EXTEND(SP,5); |
71bed85a |
1653 | PUSHs(sv_2mortal(newSVpvn(pkg, pkg_len))); |
1654 | PUSHs(sv_2mortal(newSVpvn(name, name_len))); |
a0ed51b3 |
1655 | PUSHs(listsv); |
1656 | PUSHs(sv_2mortal(newSViv(minbits))); |
1657 | PUSHs(sv_2mortal(newSViv(none))); |
1658 | PUTBACK; |
923e4eb5 |
1659 | if (IN_PERL_COMPILETIME) { |
bf1fed83 |
1660 | /* XXX ought to be handled by lex_start */ |
82686b01 |
1661 | SAVEI32(PL_in_my); |
2b4bd638 |
1662 | PL_in_my = 0; |
bf1fed83 |
1663 | sv_setpv(tokenbufsv, PL_tokenbuf); |
82686b01 |
1664 | } |
f8be5cf0 |
1665 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1666 | if (call_method("SWASHNEW", G_SCALAR)) |
8e84507e |
1667 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1668 | else |
e24b16f9 |
1669 | retval = &PL_sv_undef; |
f8be5cf0 |
1670 | if (!SvTRUE(ERRSV)) |
1671 | sv_setsv(ERRSV, errsv_save); |
1672 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1673 | LEAVE; |
1674 | POPSTACK; |
923e4eb5 |
1675 | if (IN_PERL_COMPILETIME) { |
bf1fed83 |
1676 | STRLEN len; |
cfd0369c |
1677 | const char* pv = SvPV_const(tokenbufsv, len); |
bf1fed83 |
1678 | |
1679 | Copy(pv, PL_tokenbuf, len+1, char); |
eb160463 |
1680 | PL_curcop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
a0ed51b3 |
1681 | } |
bc45ce41 |
1682 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) { |
1683 | if (SvPOK(retval)) |
35c1215d |
1684 | Perl_croak(aTHX_ "Can't find Unicode property definition \"%"SVf"\"", |
1685 | retval); |
cea2e8a9 |
1686 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
bc45ce41 |
1687 | } |
a0ed51b3 |
1688 | return retval; |
1689 | } |
1690 | |
035d37be |
1691 | |
1692 | /* This API is wrong for special case conversions since we may need to |
1693 | * return several Unicode characters for a single Unicode character |
1694 | * (see lib/unicore/SpecCase.txt) The SWASHGET in lib/utf8_heavy.pl is |
1695 | * the lower-level routine, and it is similarly broken for returning |
1696 | * multiple values. --jhi */ |
a0ed51b3 |
1697 | UV |
7fc63493 |
1698 | Perl_swash_fetch(pTHX_ SV *sv, const U8 *ptr, bool do_utf8) |
a0ed51b3 |
1699 | { |
27da23d5 |
1700 | dVAR; |
a0ed51b3 |
1701 | HV* hv = (HV*)SvRV(sv); |
3568d838 |
1702 | U32 klen; |
1703 | U32 off; |
a0ed51b3 |
1704 | STRLEN slen; |
7d85a32c |
1705 | STRLEN needents; |
cfd0369c |
1706 | const U8 *tmps = NULL; |
a0ed51b3 |
1707 | U32 bit; |
1708 | SV *retval; |
3568d838 |
1709 | U8 tmputf8[2]; |
1710 | UV c = NATIVE_TO_ASCII(*ptr); |
1711 | |
1712 | if (!do_utf8 && !UNI_IS_INVARIANT(c)) { |
eb160463 |
1713 | tmputf8[0] = (U8)UTF8_EIGHT_BIT_HI(c); |
1714 | tmputf8[1] = (U8)UTF8_EIGHT_BIT_LO(c); |
3568d838 |
1715 | ptr = tmputf8; |
1716 | } |
1717 | /* Given a UTF-X encoded char 0xAA..0xYY,0xZZ |
1718 | * then the "swatch" is a vec() for al the chars which start |
1719 | * with 0xAA..0xYY |
1720 | * So the key in the hash (klen) is length of encoded char -1 |
1721 | */ |
1722 | klen = UTF8SKIP(ptr) - 1; |
1723 | off = ptr[klen]; |
a0ed51b3 |
1724 | |
7d85a32c |
1725 | if (klen == 0) |
1726 | { |
1727 | /* If char in invariant then swatch is for all the invariant chars |
1e54db1a |
1728 | * In both UTF-8 and UTF-8-MOD that happens to be UTF_CONTINUATION_MARK |
7d85a32c |
1729 | */ |
1730 | needents = UTF_CONTINUATION_MARK; |
1731 | off = NATIVE_TO_UTF(ptr[klen]); |
1732 | } |
1733 | else |
1734 | { |
1735 | /* If char is encoded then swatch is for the prefix */ |
1736 | needents = (1 << UTF_ACCUMULATION_SHIFT); |
1737 | off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK; |
1738 | } |
1739 | |
a0ed51b3 |
1740 | /* |
1741 | * This single-entry cache saves about 1/3 of the utf8 overhead in test |
1742 | * suite. (That is, only 7-8% overall over just a hash cache. Still, |
1743 | * it's nothing to sniff at.) Pity we usually come through at least |
1744 | * two function calls to get here... |
1745 | * |
1746 | * NB: this code assumes that swatches are never modified, once generated! |
1747 | */ |
1748 | |
3568d838 |
1749 | if (hv == PL_last_swash_hv && |
a0ed51b3 |
1750 | klen == PL_last_swash_klen && |
27da23d5 |
1751 | (!klen || memEQ((char *)ptr, (char *)PL_last_swash_key, klen)) ) |
a0ed51b3 |
1752 | { |
1753 | tmps = PL_last_swash_tmps; |
1754 | slen = PL_last_swash_slen; |
1755 | } |
1756 | else { |
1757 | /* Try our second-level swatch cache, kept in a hash. */ |
e1ec3a88 |
1758 | SV** svp = hv_fetch(hv, (const char*)ptr, klen, FALSE); |
a0ed51b3 |
1759 | |
1760 | /* If not cached, generate it via utf8::SWASHGET */ |
cfd0369c |
1761 | if (!svp || !SvPOK(*svp) || !(tmps = (const U8*)SvPV_const(*svp, slen))) { |
a0ed51b3 |
1762 | dSP; |
2b9d42f0 |
1763 | /* We use utf8n_to_uvuni() as we want an index into |
1764 | Unicode tables, not a native character number. |
1765 | */ |
89ebb4a3 |
1766 | UV code_point = utf8n_to_uvuni(ptr, UTF8_MAXBYTES, 0, |
872c91ae |
1767 | ckWARN(WARN_UTF8) ? |
1768 | 0 : UTF8_ALLOW_ANY); |
f8be5cf0 |
1769 | SV *errsv_save; |
a0ed51b3 |
1770 | ENTER; |
1771 | SAVETMPS; |
1772 | save_re_context(); |
1773 | PUSHSTACKi(PERLSI_MAGIC); |
1774 | PUSHMARK(SP); |
1775 | EXTEND(SP,3); |
1776 | PUSHs((SV*)sv); |
ffbc6a93 |
1777 | /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */ |
3568d838 |
1778 | PUSHs(sv_2mortal(newSViv((klen) ? |
1779 | (code_point & ~(needents - 1)) : 0))); |
a0ed51b3 |
1780 | PUSHs(sv_2mortal(newSViv(needents))); |
1781 | PUTBACK; |
f8be5cf0 |
1782 | errsv_save = newSVsv(ERRSV); |
864dbfa3 |
1783 | if (call_method("SWASHGET", G_SCALAR)) |
8e84507e |
1784 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 |
1785 | else |
e24b16f9 |
1786 | retval = &PL_sv_undef; |
f8be5cf0 |
1787 | if (!SvTRUE(ERRSV)) |
1788 | sv_setsv(ERRSV, errsv_save); |
1789 | SvREFCNT_dec(errsv_save); |
a0ed51b3 |
1790 | POPSTACK; |
1791 | FREETMPS; |
1792 | LEAVE; |
923e4eb5 |
1793 | if (IN_PERL_COMPILETIME) |
eb160463 |
1794 | PL_curcop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
a0ed51b3 |
1795 | |
e1ec3a88 |
1796 | svp = hv_store(hv, (const char *)ptr, klen, retval, 0); |
a0ed51b3 |
1797 | |
7d85a32c |
1798 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || (slen << 3) < needents) |
cea2e8a9 |
1799 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
a0ed51b3 |
1800 | } |
1801 | |
1802 | PL_last_swash_hv = hv; |
1803 | PL_last_swash_klen = klen; |
cfd0369c |
1804 | /* FIXME change interpvar.h? */ |
1805 | PL_last_swash_tmps = (U8 *) tmps; |
a0ed51b3 |
1806 | PL_last_swash_slen = slen; |
1807 | if (klen) |
1808 | Copy(ptr, PL_last_swash_key, klen, U8); |
1809 | } |
1810 | |
9faf8d75 |
1811 | switch ((int)((slen << 3) / needents)) { |
a0ed51b3 |
1812 | case 1: |
1813 | bit = 1 << (off & 7); |
1814 | off >>= 3; |
1815 | return (tmps[off] & bit) != 0; |
1816 | case 8: |
1817 | return tmps[off]; |
1818 | case 16: |
1819 | off <<= 1; |
1820 | return (tmps[off] << 8) + tmps[off + 1] ; |
1821 | case 32: |
1822 | off <<= 2; |
1823 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; |
1824 | } |
cea2e8a9 |
1825 | Perl_croak(aTHX_ "panic: swash_fetch"); |
a0ed51b3 |
1826 | return 0; |
1827 | } |
2b9d42f0 |
1828 | |
1829 | |
1830 | /* |
37607a96 |
1831 | =for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv |
2b9d42f0 |
1832 | |
1e54db1a |
1833 | Adds the UTF-8 representation of the Native codepoint C<uv> to the end |
89ebb4a3 |
1834 | of the string C<d>; C<d> should be have at least C<UTF8_MAXBYTES+1> free |
2b9d42f0 |
1835 | bytes available. The return value is the pointer to the byte after the |
1836 | end of the new character. In other words, |
1837 | |
1838 | d = uvchr_to_utf8(d, uv); |
1839 | |
1840 | is the recommended wide native character-aware way of saying |
1841 | |
1842 | *(d++) = uv; |
1843 | |
1844 | =cut |
1845 | */ |
1846 | |
1847 | /* On ASCII machines this is normally a macro but we want a |
1848 | real function in case XS code wants it |
1849 | */ |
1850 | #undef Perl_uvchr_to_utf8 |
1851 | U8 * |
1852 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) |
1853 | { |
b851fbc1 |
1854 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), 0); |
2b9d42f0 |
1855 | } |
1856 | |
b851fbc1 |
1857 | U8 * |
1858 | Perl_uvchr_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags) |
1859 | { |
1860 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), flags); |
1861 | } |
2b9d42f0 |
1862 | |
1863 | /* |
37607a96 |
1864 | =for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
2b9d42f0 |
1865 | |
1866 | Returns the native character value of the first character in the string C<s> |
1e54db1a |
1867 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the |
2b9d42f0 |
1868 | length, in bytes, of that character. |
1869 | |
1870 | Allows length and flags to be passed to low level routine. |
1871 | |
1872 | =cut |
1873 | */ |
0a2ef054 |
1874 | /* On ASCII machines this is normally a macro but we want |
1875 | a real function in case XS code wants it |
2b9d42f0 |
1876 | */ |
1877 | #undef Perl_utf8n_to_uvchr |
1878 | UV |
7fc63493 |
1879 | Perl_utf8n_to_uvchr(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
2b9d42f0 |
1880 | { |
1881 | UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); |
1882 | return UNI_TO_NATIVE(uv); |
1883 | } |
1884 | |
d2cc3551 |
1885 | /* |
1886 | =for apidoc A|char *|pv_uni_display|SV *dsv|U8 *spv|STRLEN len|STRLEN pvlim|UV flags |
1887 | |
1888 | Build to the scalar dsv a displayable version of the string spv, |
1889 | length len, the displayable version being at most pvlim bytes long |
1890 | (if longer, the rest is truncated and "..." will be appended). |
0a2ef054 |
1891 | |
9e55ce06 |
1892 | The flags argument can have UNI_DISPLAY_ISPRINT set to display |
00e86452 |
1893 | isPRINT()able characters as themselves, UNI_DISPLAY_BACKSLASH |
0a2ef054 |
1894 | to display the \\[nrfta\\] as the backslashed versions (like '\n') |
1895 | (UNI_DISPLAY_BACKSLASH is preferred over UNI_DISPLAY_ISPRINT for \\). |
1896 | UNI_DISPLAY_QQ (and its alias UNI_DISPLAY_REGEX) have both |
1897 | UNI_DISPLAY_BACKSLASH and UNI_DISPLAY_ISPRINT turned on. |
1898 | |
d2cc3551 |
1899 | The pointer to the PV of the dsv is returned. |
1900 | |
1901 | =cut */ |
e6b2e755 |
1902 | char * |
e1ec3a88 |
1903 | Perl_pv_uni_display(pTHX_ SV *dsv, const U8 *spv, STRLEN len, STRLEN pvlim, UV flags) |
e6b2e755 |
1904 | { |
1905 | int truncated = 0; |
e1ec3a88 |
1906 | const char *s, *e; |
e6b2e755 |
1907 | |
1908 | sv_setpvn(dsv, "", 0); |
e1ec3a88 |
1909 | for (s = (const char *)spv, e = s + len; s < e; s += UTF8SKIP(s)) { |
e6b2e755 |
1910 | UV u; |
a49f32c6 |
1911 | /* This serves double duty as a flag and a character to print after |
1912 | a \ when flags & UNI_DISPLAY_BACKSLASH is true. |
1913 | */ |
1914 | char ok = 0; |
c728cb41 |
1915 | |
e6b2e755 |
1916 | if (pvlim && SvCUR(dsv) >= pvlim) { |
1917 | truncated++; |
1918 | break; |
1919 | } |
1920 | u = utf8_to_uvchr((U8*)s, 0); |
c728cb41 |
1921 | if (u < 256) { |
a3b680e6 |
1922 | const unsigned char c = (unsigned char)u & 0xFF; |
c728cb41 |
1923 | if (!ok && (flags & UNI_DISPLAY_BACKSLASH)) { |
a49f32c6 |
1924 | switch (c) { |
c728cb41 |
1925 | case '\n': |
a49f32c6 |
1926 | ok = 'n'; break; |
c728cb41 |
1927 | case '\r': |
a49f32c6 |
1928 | ok = 'r'; break; |
c728cb41 |
1929 | case '\t': |
a49f32c6 |
1930 | ok = 't'; break; |
c728cb41 |
1931 | case '\f': |
a49f32c6 |
1932 | ok = 'f'; break; |
c728cb41 |
1933 | case '\a': |
a49f32c6 |
1934 | ok = 'a'; break; |
c728cb41 |
1935 | case '\\': |
a49f32c6 |
1936 | ok = '\\'; break; |
c728cb41 |
1937 | default: break; |
1938 | } |
a49f32c6 |
1939 | if (ok) { |
1940 | Perl_sv_catpvf(aTHX_ dsv, "\\%c", ok); |
1941 | } |
c728cb41 |
1942 | } |
00e86452 |
1943 | /* isPRINT() is the locale-blind version. */ |
a49f32c6 |
1944 | if (!ok && (flags & UNI_DISPLAY_ISPRINT) && isPRINT(c)) { |
1945 | Perl_sv_catpvf(aTHX_ dsv, "%c", c); |
1946 | ok = 1; |
0a2ef054 |
1947 | } |
c728cb41 |
1948 | } |
1949 | if (!ok) |
9e55ce06 |
1950 | Perl_sv_catpvf(aTHX_ dsv, "\\x{%"UVxf"}", u); |
e6b2e755 |
1951 | } |
1952 | if (truncated) |
1953 | sv_catpvn(dsv, "...", 3); |
1954 | |
1955 | return SvPVX(dsv); |
1956 | } |
2b9d42f0 |
1957 | |
d2cc3551 |
1958 | /* |
1959 | =for apidoc A|char *|sv_uni_display|SV *dsv|SV *ssv|STRLEN pvlim|UV flags |
1960 | |
1961 | Build to the scalar dsv a displayable version of the scalar sv, |
0a2ef054 |
1962 | the displayable version being at most pvlim bytes long |
d2cc3551 |
1963 | (if longer, the rest is truncated and "..." will be appended). |
0a2ef054 |
1964 | |
1965 | The flags argument is as in pv_uni_display(). |
1966 | |
d2cc3551 |
1967 | The pointer to the PV of the dsv is returned. |
1968 | |
1969 | =cut */ |
e6b2e755 |
1970 | char * |
1971 | Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags) |
1972 | { |
cfd0369c |
1973 | return Perl_pv_uni_display(aTHX_ dsv, (const U8*)SvPVX_const(ssv), |
1974 | SvCUR(ssv), pvlim, flags); |
701a277b |
1975 | } |
1976 | |
d2cc3551 |
1977 | /* |
d07ddd77 |
1978 | =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 |
1979 | |
1980 | Return true if the strings s1 and s2 differ case-insensitively, false |
1981 | if not (if they are equal case-insensitively). If u1 is true, the |
1982 | string s1 is assumed to be in UTF-8-encoded Unicode. If u2 is true, |
d07ddd77 |
1983 | the string s2 is assumed to be in UTF-8-encoded Unicode. If u1 or u2 |
1984 | are false, the respective string is assumed to be in native 8-bit |
1985 | encoding. |
1986 | |
1987 | If the pe1 and pe2 are non-NULL, the scanning pointers will be copied |
1988 | in there (they will point at the beginning of the I<next> character). |
1989 | If the pointers behind pe1 or pe2 are non-NULL, they are the end |
1990 | pointers beyond which scanning will not continue under any |
4cdaeff7 |
1991 | circumstances. If the byte lengths l1 and l2 are non-zero, s1+l1 and |
d07ddd77 |
1992 | s2+l2 will be used as goal end pointers that will also stop the scan, |
1993 | and which qualify towards defining a successful match: all the scans |
1994 | that define an explicit length must reach their goal pointers for |
1995 | a match to succeed). |
d2cc3551 |
1996 | |
1997 | For case-insensitiveness, the "casefolding" of Unicode is used |
1998 | instead of upper/lowercasing both the characters, see |
1999 | http://www.unicode.org/unicode/reports/tr21/ (Case Mappings). |
2000 | |
2001 | =cut */ |
701a277b |
2002 | I32 |
d07ddd77 |
2003 | 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 |
2004 | { |
e1ec3a88 |
2005 | register const U8 *p1 = (const U8*)s1; |
2006 | register const U8 *p2 = (const U8*)s2; |
2007 | register const U8 *f1 = 0, *f2 = 0; |
2008 | register U8 *e1 = 0, *q1 = 0; |
2009 | register U8 *e2 = 0, *q2 = 0; |
d07ddd77 |
2010 | STRLEN n1 = 0, n2 = 0; |
89ebb4a3 |
2011 | U8 foldbuf1[UTF8_MAXBYTES_CASE+1]; |
2012 | U8 foldbuf2[UTF8_MAXBYTES_CASE+1]; |
d7f013c8 |
2013 | U8 natbuf[1+1]; |
2014 | STRLEN foldlen1, foldlen2; |
d07ddd77 |
2015 | bool match; |
332ddc25 |
2016 | |
d07ddd77 |
2017 | if (pe1) |
2018 | e1 = *(U8**)pe1; |
e1ec3a88 |
2019 | if (e1 == 0 || (l1 && l1 < (UV)(e1 - (const U8*)s1))) |
2020 | f1 = (const U8*)s1 + l1; |
d07ddd77 |
2021 | if (pe2) |
2022 | e2 = *(U8**)pe2; |
e1ec3a88 |
2023 | if (e2 == 0 || (l2 && l2 < (UV)(e2 - (const U8*)s2))) |
2024 | f2 = (const U8*)s2 + l2; |
d07ddd77 |
2025 | |
2026 | if ((e1 == 0 && f1 == 0) || (e2 == 0 && f2 == 0) || (f1 == 0 && f2 == 0)) |
2027 | return 1; /* mismatch; possible infinite loop or false positive */ |
2028 | |
a6872d42 |
2029 | if (!u1 || !u2) |
2030 | natbuf[1] = 0; /* Need to terminate the buffer. */ |
2031 | |
d07ddd77 |
2032 | while ((e1 == 0 || p1 < e1) && |
2033 | (f1 == 0 || p1 < f1) && |
2034 | (e2 == 0 || p2 < e2) && |
2035 | (f2 == 0 || p2 < f2)) { |
2036 | if (n1 == 0) { |
d7f013c8 |
2037 | if (u1) |
2038 | to_utf8_fold(p1, foldbuf1, &foldlen1); |
2039 | else { |
f5cee151 |
2040 | natbuf[0] = *p1; |
d7f013c8 |
2041 | to_utf8_fold(natbuf, foldbuf1, &foldlen1); |
2042 | } |
2043 | q1 = foldbuf1; |
d07ddd77 |
2044 | n1 = foldlen1; |
332ddc25 |
2045 | } |
d07ddd77 |
2046 | if (n2 == 0) { |
d7f013c8 |
2047 | if (u2) |
2048 | to_utf8_fold(p2, foldbuf2, &foldlen2); |
2049 | else { |
f5cee151 |
2050 | natbuf[0] = *p2; |
d7f013c8 |
2051 | to_utf8_fold(natbuf, foldbuf2, &foldlen2); |
2052 | } |
2053 | q2 = foldbuf2; |
d07ddd77 |
2054 | n2 = foldlen2; |
332ddc25 |
2055 | } |
d07ddd77 |
2056 | while (n1 && n2) { |
2057 | if ( UTF8SKIP(q1) != UTF8SKIP(q2) || |
2058 | (UTF8SKIP(q1) == 1 && *q1 != *q2) || |
2059 | memNE((char*)q1, (char*)q2, UTF8SKIP(q1)) ) |
d7f013c8 |
2060 | return 1; /* mismatch */ |
d07ddd77 |
2061 | n1 -= UTF8SKIP(q1); |
d7f013c8 |
2062 | q1 += UTF8SKIP(q1); |
d07ddd77 |
2063 | n2 -= UTF8SKIP(q2); |
d7f013c8 |
2064 | q2 += UTF8SKIP(q2); |
701a277b |
2065 | } |
d07ddd77 |
2066 | if (n1 == 0) |
d7f013c8 |
2067 | p1 += u1 ? UTF8SKIP(p1) : 1; |
d07ddd77 |
2068 | if (n2 == 0) |
d7f013c8 |
2069 | p2 += u2 ? UTF8SKIP(p2) : 1; |
2070 | |
d2cc3551 |
2071 | } |
5469e704 |
2072 | |
d07ddd77 |
2073 | /* A match is defined by all the scans that specified |
2074 | * an explicit length reaching their final goals. */ |
2075 | match = (f1 == 0 || p1 == f1) && (f2 == 0 || p2 == f2); |
5469e704 |
2076 | |
2077 | if (match) { |
d07ddd77 |
2078 | if (pe1) |
2079 | *pe1 = (char*)p1; |
2080 | if (pe2) |
2081 | *pe2 = (char*)p2; |
5469e704 |
2082 | } |
2083 | |
2084 | return match ? 0 : 1; /* 0 match, 1 mismatch */ |
e6b2e755 |
2085 | } |
701a277b |
2086 | |
a49f32c6 |
2087 | /* |
2088 | * Local variables: |
2089 | * c-indentation-style: bsd |
2090 | * c-basic-offset: 4 |
2091 | * indent-tabs-mode: t |
2092 | * End: |
2093 | * |
37442d52 |
2094 | * ex: set ts=8 sts=4 sw=4 noet: |
2095 | */ |