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