Commit | Line | Data |
---|---|---|
a0ed51b3 LW |
1 | /* utf8.c |
2 | * | |
b94e2f88 RGS |
3 | * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
4 | * by Larry Wall and 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 | } |
9041c2e3 | 169 | |
646ca15d JH |
170 | /* |
171 | ||
172 | Tests if some arbitrary number of bytes begins in a valid UTF-8 | |
173 | character. Note that an INVARIANT (i.e. ASCII) character is a valid | |
174 | UTF-8 character. The actual number of bytes in the UTF-8 character | |
175 | will be returned if it is valid, otherwise 0. | |
176 | ||
177 | This is the "slow" version as opposed to the "fast" version which is | |
178 | the "unrolled" IS_UTF8_CHAR(). E.g. for t/uni/class.t the speed | |
179 | difference is a factor of 2 to 3. For lengths (UTF8SKIP(s)) of four | |
180 | or less you should use the IS_UTF8_CHAR(), for lengths of five or more | |
181 | you should use the _slow(). In practice this means that the _slow() | |
182 | will be used very rarely, since the maximum Unicode code point (as of | |
183 | Unicode 4.1) is U+10FFFF, which encodes in UTF-8 to four bytes. Only | |
184 | the "Perl extended UTF-8" (the infamous 'v-strings') will encode into | |
185 | five bytes or more. | |
186 | ||
187 | =cut */ | |
c053b435 | 188 | STATIC STRLEN |
5f66b61c | 189 | S_is_utf8_char_slow(const U8 *s, const STRLEN len) |
646ca15d JH |
190 | { |
191 | U8 u = *s; | |
192 | STRLEN slen; | |
193 | UV uv, ouv; | |
194 | ||
195 | if (UTF8_IS_INVARIANT(u)) | |
196 | return 1; | |
197 | ||
198 | if (!UTF8_IS_START(u)) | |
199 | return 0; | |
200 | ||
201 | if (len < 2 || !UTF8_IS_CONTINUATION(s[1])) | |
202 | return 0; | |
203 | ||
204 | slen = len - 1; | |
205 | s++; | |
77263263 TS |
206 | #ifdef EBCDIC |
207 | u = NATIVE_TO_UTF(u); | |
208 | #endif | |
646ca15d JH |
209 | u &= UTF_START_MASK(len); |
210 | uv = u; | |
211 | ouv = uv; | |
212 | while (slen--) { | |
213 | if (!UTF8_IS_CONTINUATION(*s)) | |
214 | return 0; | |
215 | uv = UTF8_ACCUMULATE(uv, *s); | |
216 | if (uv < ouv) | |
217 | return 0; | |
218 | ouv = uv; | |
219 | s++; | |
220 | } | |
221 | ||
222 | if ((STRLEN)UNISKIP(uv) < len) | |
223 | return 0; | |
224 | ||
225 | return len; | |
226 | } | |
9041c2e3 NIS |
227 | |
228 | /* | |
7fc63493 | 229 | =for apidoc A|STRLEN|is_utf8_char|const U8 *s |
eebe1485 | 230 | |
5da9da9e | 231 | Tests if some arbitrary number of bytes begins in a valid UTF-8 |
82686b01 JH |
232 | character. Note that an INVARIANT (i.e. ASCII) character is a valid |
233 | UTF-8 character. The actual number of bytes in the UTF-8 character | |
234 | will be returned if it is valid, otherwise 0. | |
9041c2e3 | 235 | |
82686b01 | 236 | =cut */ |
067a85ef | 237 | STRLEN |
7fc63493 | 238 | Perl_is_utf8_char(pTHX_ const U8 *s) |
386d01d6 | 239 | { |
44f8325f | 240 | const STRLEN len = UTF8SKIP(s); |
96a5add6 | 241 | PERL_UNUSED_CONTEXT; |
3b0fc154 | 242 | #ifdef IS_UTF8_CHAR |
768c67ee | 243 | if (IS_UTF8_CHAR_FAST(len)) |
3b0fc154 JH |
244 | return IS_UTF8_CHAR(s, len) ? len : 0; |
245 | #endif /* #ifdef IS_UTF8_CHAR */ | |
2c0c5f92 | 246 | return is_utf8_char_slow(s, len); |
386d01d6 GS |
247 | } |
248 | ||
6662521e | 249 | /* |
7fc63493 | 250 | =for apidoc A|bool|is_utf8_string|const U8 *s|STRLEN len |
6662521e | 251 | |
c9ada85f | 252 | Returns true if first C<len> bytes of the given string form a valid |
1e54db1a JH |
253 | UTF-8 string, false otherwise. Note that 'a valid UTF-8 string' does |
254 | not mean 'a string that contains code points above 0x7F encoded in UTF-8' | |
255 | because a valid ASCII string is a valid UTF-8 string. | |
6662521e | 256 | |
768c67ee JH |
257 | See also is_utf8_string_loclen() and is_utf8_string_loc(). |
258 | ||
6662521e GS |
259 | =cut |
260 | */ | |
261 | ||
8e84507e | 262 | bool |
7fc63493 | 263 | Perl_is_utf8_string(pTHX_ const U8 *s, STRLEN len) |
6662521e | 264 | { |
35da51f7 | 265 | const U8* const send = s + (len ? len : strlen((const char *)s)); |
7fc63493 | 266 | const U8* x = s; |
067a85ef | 267 | |
96a5add6 | 268 | PERL_UNUSED_CONTEXT; |
1aa99e6b | 269 | |
6662521e | 270 | while (x < send) { |
a3b680e6 | 271 | STRLEN c; |
1acdb0da JH |
272 | /* Inline the easy bits of is_utf8_char() here for speed... */ |
273 | if (UTF8_IS_INVARIANT(*x)) | |
274 | c = 1; | |
275 | else if (!UTF8_IS_START(*x)) | |
768c67ee | 276 | goto out; |
1acdb0da JH |
277 | else { |
278 | /* ... and call is_utf8_char() only if really needed. */ | |
646ca15d JH |
279 | #ifdef IS_UTF8_CHAR |
280 | c = UTF8SKIP(x); | |
768c67ee JH |
281 | if (IS_UTF8_CHAR_FAST(c)) { |
282 | if (!IS_UTF8_CHAR(x, c)) | |
3c614e38 AD |
283 | c = 0; |
284 | } | |
285 | else | |
286 | c = is_utf8_char_slow(x, c); | |
646ca15d JH |
287 | #else |
288 | c = is_utf8_char(x); | |
289 | #endif /* #ifdef IS_UTF8_CHAR */ | |
1acdb0da | 290 | if (!c) |
768c67ee | 291 | goto out; |
1acdb0da | 292 | } |
6662521e | 293 | x += c; |
6662521e | 294 | } |
768c67ee JH |
295 | |
296 | out: | |
60006e79 JH |
297 | if (x != send) |
298 | return FALSE; | |
067a85ef A |
299 | |
300 | return TRUE; | |
6662521e GS |
301 | } |
302 | ||
67e989fb | 303 | /* |
814fafa7 NC |
304 | Implemented as a macro in utf8.h |
305 | ||
306 | =for apidoc A|bool|is_utf8_string_loc|const U8 *s|STRLEN len|const U8 **ep | |
307 | ||
308 | Like is_utf8_string() but stores the location of the failure (in the | |
309 | case of "utf8ness failure") or the location s+len (in the case of | |
310 | "utf8ness success") in the C<ep>. | |
311 | ||
312 | See also is_utf8_string_loclen() and is_utf8_string(). | |
313 | ||
768c67ee | 314 | =for apidoc A|bool|is_utf8_string_loclen|const U8 *s|STRLEN len|const U8 **ep|const STRLEN *el |
81cd54e3 | 315 | |
e3e4599f | 316 | Like is_utf8_string() but stores the location of the failure (in the |
768c67ee JH |
317 | case of "utf8ness failure") or the location s+len (in the case of |
318 | "utf8ness success") in the C<ep>, and the number of UTF-8 | |
319 | encoded characters in the C<el>. | |
320 | ||
321 | See also is_utf8_string_loc() and is_utf8_string(). | |
81cd54e3 JH |
322 | |
323 | =cut | |
324 | */ | |
325 | ||
326 | bool | |
768c67ee | 327 | Perl_is_utf8_string_loclen(pTHX_ const U8 *s, STRLEN len, const U8 **ep, STRLEN *el) |
81cd54e3 | 328 | { |
35da51f7 | 329 | const U8* const send = s + (len ? len : strlen((const char *)s)); |
7fc63493 | 330 | const U8* x = s; |
81cd54e3 | 331 | STRLEN c; |
3ebfea28 | 332 | STRLEN outlen = 0; |
96a5add6 | 333 | PERL_UNUSED_CONTEXT; |
81cd54e3 | 334 | |
81cd54e3 JH |
335 | while (x < send) { |
336 | /* Inline the easy bits of is_utf8_char() here for speed... */ | |
337 | if (UTF8_IS_INVARIANT(*x)) | |
768c67ee JH |
338 | c = 1; |
339 | else if (!UTF8_IS_START(*x)) | |
340 | goto out; | |
81cd54e3 | 341 | else { |
768c67ee JH |
342 | /* ... and call is_utf8_char() only if really needed. */ |
343 | #ifdef IS_UTF8_CHAR | |
344 | c = UTF8SKIP(x); | |
345 | if (IS_UTF8_CHAR_FAST(c)) { | |
346 | if (!IS_UTF8_CHAR(x, c)) | |
347 | c = 0; | |
348 | } else | |
349 | c = is_utf8_char_slow(x, c); | |
350 | #else | |
351 | c = is_utf8_char(x); | |
352 | #endif /* #ifdef IS_UTF8_CHAR */ | |
353 | if (!c) | |
354 | goto out; | |
81cd54e3 | 355 | } |
768c67ee | 356 | x += c; |
3ebfea28 | 357 | outlen++; |
81cd54e3 | 358 | } |
768c67ee JH |
359 | |
360 | out: | |
3ebfea28 AL |
361 | if (el) |
362 | *el = outlen; | |
363 | ||
768c67ee JH |
364 | if (ep) |
365 | *ep = x; | |
3ebfea28 | 366 | return (x == send); |
81cd54e3 JH |
367 | } |
368 | ||
369 | /* | |
768c67ee | 370 | |
7fc63493 | 371 | =for apidoc A|UV|utf8n_to_uvuni|const U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags |
67e989fb | 372 | |
9041c2e3 NIS |
373 | Bottom level UTF-8 decode routine. |
374 | Returns the unicode code point value of the first character in the string C<s> | |
1e54db1a | 375 | which is assumed to be in UTF-8 encoding and no longer than C<curlen>; |
7df053ec | 376 | C<retlen> will be set to the length, in bytes, of that character. |
67e989fb | 377 | |
1e54db1a | 378 | If C<s> does not point to a well-formed UTF-8 character, the behaviour |
dcad2880 JH |
379 | is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY, |
380 | it is assumed that the caller will raise a warning, and this function | |
28d3d195 JH |
381 | will silently just set C<retlen> to C<-1> and return zero. If the |
382 | C<flags> does not contain UTF8_CHECK_ONLY, warnings about | |
383 | malformations will be given, C<retlen> will be set to the expected | |
384 | length of the UTF-8 character in bytes, and zero will be returned. | |
385 | ||
386 | The C<flags> can also contain various flags to allow deviations from | |
387 | the strict UTF-8 encoding (see F<utf8.h>). | |
67e989fb | 388 | |
9041c2e3 NIS |
389 | Most code should use utf8_to_uvchr() rather than call this directly. |
390 | ||
37607a96 PK |
391 | =cut |
392 | */ | |
67e989fb | 393 | |
a0ed51b3 | 394 | UV |
7fc63493 | 395 | Perl_utf8n_to_uvuni(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags) |
a0ed51b3 | 396 | { |
97aff369 | 397 | dVAR; |
d4c19fe8 | 398 | const U8 * const s0 = s; |
9c5ffd7c | 399 | UV uv = *s, ouv = 0; |
ba210ebe | 400 | STRLEN len = 1; |
7fc63493 AL |
401 | const bool dowarn = ckWARN_d(WARN_UTF8); |
402 | const UV startbyte = *s; | |
ba210ebe | 403 | STRLEN expectlen = 0; |
a0dbb045 JH |
404 | U32 warning = 0; |
405 | ||
406 | /* This list is a superset of the UTF8_ALLOW_XXX. */ | |
407 | ||
408 | #define UTF8_WARN_EMPTY 1 | |
409 | #define UTF8_WARN_CONTINUATION 2 | |
410 | #define UTF8_WARN_NON_CONTINUATION 3 | |
411 | #define UTF8_WARN_FE_FF 4 | |
412 | #define UTF8_WARN_SHORT 5 | |
413 | #define UTF8_WARN_OVERFLOW 6 | |
414 | #define UTF8_WARN_SURROGATE 7 | |
c867b360 JH |
415 | #define UTF8_WARN_LONG 8 |
416 | #define UTF8_WARN_FFFF 9 /* Also FFFE. */ | |
a0dbb045 JH |
417 | |
418 | if (curlen == 0 && | |
419 | !(flags & UTF8_ALLOW_EMPTY)) { | |
420 | warning = UTF8_WARN_EMPTY; | |
0c443dc2 JH |
421 | goto malformed; |
422 | } | |
423 | ||
1d72bdf6 | 424 | if (UTF8_IS_INVARIANT(uv)) { |
a0ed51b3 LW |
425 | if (retlen) |
426 | *retlen = 1; | |
c4d5f83a | 427 | return (UV) (NATIVE_TO_UTF(*s)); |
a0ed51b3 | 428 | } |
67e989fb | 429 | |
421a8bf2 | 430 | if (UTF8_IS_CONTINUATION(uv) && |
fcc8fcf6 | 431 | !(flags & UTF8_ALLOW_CONTINUATION)) { |
a0dbb045 | 432 | warning = UTF8_WARN_CONTINUATION; |
ba210ebe JH |
433 | goto malformed; |
434 | } | |
435 | ||
421a8bf2 | 436 | if (UTF8_IS_START(uv) && curlen > 1 && !UTF8_IS_CONTINUATION(s[1]) && |
fcc8fcf6 | 437 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { |
a0dbb045 | 438 | warning = UTF8_WARN_NON_CONTINUATION; |
ba210ebe JH |
439 | goto malformed; |
440 | } | |
9041c2e3 | 441 | |
1d72bdf6 | 442 | #ifdef EBCDIC |
75383841 | 443 | uv = NATIVE_TO_UTF(uv); |
1d72bdf6 | 444 | #else |
fcc8fcf6 JH |
445 | if ((uv == 0xfe || uv == 0xff) && |
446 | !(flags & UTF8_ALLOW_FE_FF)) { | |
a0dbb045 | 447 | warning = UTF8_WARN_FE_FF; |
ba210ebe | 448 | goto malformed; |
a0ed51b3 | 449 | } |
1d72bdf6 NIS |
450 | #endif |
451 | ||
ba210ebe JH |
452 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
453 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } | |
454 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } | |
455 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } | |
1d72bdf6 NIS |
456 | #ifdef EBCDIC |
457 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } | |
458 | else { len = 7; uv &= 0x01; } | |
459 | #else | |
ba210ebe JH |
460 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
461 | else if (!(uv & 0x01)) { len = 7; uv = 0; } | |
1d72bdf6 NIS |
462 | else { len = 13; uv = 0; } /* whoa! */ |
463 | #endif | |
464 | ||
a0ed51b3 LW |
465 | if (retlen) |
466 | *retlen = len; | |
9041c2e3 | 467 | |
ba210ebe JH |
468 | expectlen = len; |
469 | ||
fcc8fcf6 JH |
470 | if ((curlen < expectlen) && |
471 | !(flags & UTF8_ALLOW_SHORT)) { | |
a0dbb045 | 472 | warning = UTF8_WARN_SHORT; |
ba210ebe JH |
473 | goto malformed; |
474 | } | |
475 | ||
476 | len--; | |
a0ed51b3 | 477 | s++; |
ba210ebe JH |
478 | ouv = uv; |
479 | ||
a0ed51b3 | 480 | while (len--) { |
421a8bf2 JH |
481 | if (!UTF8_IS_CONTINUATION(*s) && |
482 | !(flags & UTF8_ALLOW_NON_CONTINUATION)) { | |
a0dbb045 JH |
483 | s--; |
484 | warning = UTF8_WARN_NON_CONTINUATION; | |
ba210ebe | 485 | goto malformed; |
a0ed51b3 LW |
486 | } |
487 | else | |
8850bf83 | 488 | uv = UTF8_ACCUMULATE(uv, *s); |
a0dbb045 JH |
489 | if (!(uv > ouv)) { |
490 | /* These cannot be allowed. */ | |
491 | if (uv == ouv) { | |
75dbc644 | 492 | if (expectlen != 13 && !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 JH |
493 | warning = UTF8_WARN_LONG; |
494 | goto malformed; | |
495 | } | |
496 | } | |
497 | else { /* uv < ouv */ | |
498 | /* This cannot be allowed. */ | |
499 | warning = UTF8_WARN_OVERFLOW; | |
500 | goto malformed; | |
501 | } | |
ba210ebe JH |
502 | } |
503 | s++; | |
504 | ouv = uv; | |
505 | } | |
506 | ||
421a8bf2 | 507 | if (UNICODE_IS_SURROGATE(uv) && |
fcc8fcf6 | 508 | !(flags & UTF8_ALLOW_SURROGATE)) { |
a0dbb045 | 509 | warning = UTF8_WARN_SURROGATE; |
ba210ebe | 510 | goto malformed; |
eb160463 | 511 | } else if ((expectlen > (STRLEN)UNISKIP(uv)) && |
fcc8fcf6 | 512 | !(flags & UTF8_ALLOW_LONG)) { |
a0dbb045 | 513 | warning = UTF8_WARN_LONG; |
ba210ebe | 514 | goto malformed; |
421a8bf2 | 515 | } else if (UNICODE_IS_ILLEGAL(uv) && |
a9917092 | 516 | !(flags & UTF8_ALLOW_FFFF)) { |
a0dbb045 | 517 | warning = UTF8_WARN_FFFF; |
a9917092 | 518 | goto malformed; |
a0ed51b3 | 519 | } |
ba210ebe | 520 | |
a0ed51b3 | 521 | return uv; |
ba210ebe JH |
522 | |
523 | malformed: | |
524 | ||
fcc8fcf6 | 525 | if (flags & UTF8_CHECK_ONLY) { |
ba210ebe | 526 | if (retlen) |
cc366d4b | 527 | *retlen = -1; |
ba210ebe JH |
528 | return 0; |
529 | } | |
530 | ||
a0dbb045 | 531 | if (dowarn) { |
396482e1 | 532 | SV* const sv = sv_2mortal(newSVpvs("Malformed UTF-8 character ")); |
a0dbb045 JH |
533 | |
534 | switch (warning) { | |
535 | case 0: /* Intentionally empty. */ break; | |
536 | case UTF8_WARN_EMPTY: | |
396482e1 | 537 | sv_catpvs(sv, "(empty string)"); |
a0dbb045 JH |
538 | break; |
539 | case UTF8_WARN_CONTINUATION: | |
097fb8e2 | 540 | Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf", with no preceding start byte)", uv); |
a0dbb045 JH |
541 | break; |
542 | case UTF8_WARN_NON_CONTINUATION: | |
097fb8e2 JH |
543 | if (s == s0) |
544 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", immediately after start byte 0x%02"UVxf")", | |
545 | (UV)s[1], startbyte); | |
551405c4 AL |
546 | else { |
547 | const int len = (int)(s-s0); | |
097fb8e2 | 548 | Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", %d byte%s after start byte 0x%02"UVxf", expected %d bytes)", |
551405c4 AL |
549 | (UV)s[1], len, len > 1 ? "s" : "", startbyte, (int)expectlen); |
550 | } | |
551 | ||
a0dbb045 JH |
552 | break; |
553 | case UTF8_WARN_FE_FF: | |
554 | Perl_sv_catpvf(aTHX_ sv, "(byte 0x%02"UVxf")", uv); | |
555 | break; | |
556 | case UTF8_WARN_SHORT: | |
097fb8e2 | 557 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
5d7488b2 | 558 | (int)curlen, curlen == 1 ? "" : "s", (int)expectlen, startbyte); |
b31f83c2 | 559 | expectlen = curlen; /* distance for caller to skip */ |
a0dbb045 JH |
560 | break; |
561 | case UTF8_WARN_OVERFLOW: | |
097fb8e2 JH |
562 | Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x, after start byte 0x%02"UVxf")", |
563 | ouv, *s, startbyte); | |
a0dbb045 JH |
564 | break; |
565 | case UTF8_WARN_SURROGATE: | |
566 | Perl_sv_catpvf(aTHX_ sv, "(UTF-16 surrogate 0x%04"UVxf")", uv); | |
567 | break; | |
a0dbb045 | 568 | case UTF8_WARN_LONG: |
097fb8e2 | 569 | Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")", |
5d7488b2 | 570 | (int)expectlen, expectlen == 1 ? "": "s", UNISKIP(uv), startbyte); |
a0dbb045 JH |
571 | break; |
572 | case UTF8_WARN_FFFF: | |
573 | Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv); | |
574 | break; | |
575 | default: | |
396482e1 | 576 | sv_catpvs(sv, "(unknown reason)"); |
a0dbb045 JH |
577 | break; |
578 | } | |
579 | ||
580 | if (warning) { | |
44f8325f | 581 | const char * const s = SvPVX_const(sv); |
a0dbb045 JH |
582 | |
583 | if (PL_op) | |
9014280d | 584 | Perl_warner(aTHX_ packWARN(WARN_UTF8), |
53e06cf0 | 585 | "%s in %s", s, OP_DESC(PL_op)); |
a0dbb045 | 586 | else |
9014280d | 587 | Perl_warner(aTHX_ packWARN(WARN_UTF8), "%s", s); |
a0dbb045 JH |
588 | } |
589 | } | |
590 | ||
ba210ebe | 591 | if (retlen) |
28d3d195 | 592 | *retlen = expectlen ? expectlen : len; |
ba210ebe | 593 | |
28d3d195 | 594 | return 0; |
a0ed51b3 LW |
595 | } |
596 | ||
8e84507e | 597 | /* |
7fc63493 | 598 | =for apidoc A|UV|utf8_to_uvchr|const U8 *s|STRLEN *retlen |
9041c2e3 NIS |
599 | |
600 | Returns the native character value of the first character in the string C<s> | |
1e54db1a | 601 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the |
9041c2e3 NIS |
602 | length, in bytes, of that character. |
603 | ||
1e54db1a | 604 | If C<s> does not point to a well-formed UTF-8 character, zero is |
9041c2e3 NIS |
605 | returned and retlen is set, if possible, to -1. |
606 | ||
607 | =cut | |
608 | */ | |
609 | ||
610 | UV | |
7fc63493 | 611 | Perl_utf8_to_uvchr(pTHX_ const U8 *s, STRLEN *retlen) |
9041c2e3 | 612 | { |
1754c1a1 NC |
613 | return utf8n_to_uvchr(s, UTF8_MAXBYTES, retlen, |
614 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); | |
9041c2e3 NIS |
615 | } |
616 | ||
617 | /* | |
7fc63493 | 618 | =for apidoc A|UV|utf8_to_uvuni|const U8 *s|STRLEN *retlen |
9041c2e3 NIS |
619 | |
620 | Returns the Unicode code point of the first character in the string C<s> | |
1e54db1a | 621 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the |
9041c2e3 NIS |
622 | length, in bytes, of that character. |
623 | ||
624 | This function should only be used when returned UV is considered | |
625 | an index into the Unicode semantic tables (e.g. swashes). | |
626 | ||
1e54db1a | 627 | If C<s> does not point to a well-formed UTF-8 character, zero is |
ba210ebe | 628 | returned and retlen is set, if possible, to -1. |
8e84507e NIS |
629 | |
630 | =cut | |
631 | */ | |
632 | ||
633 | UV | |
7fc63493 | 634 | Perl_utf8_to_uvuni(pTHX_ const U8 *s, STRLEN *retlen) |
8e84507e | 635 | { |
9041c2e3 | 636 | /* Call the low level routine asking for checks */ |
89ebb4a3 | 637 | return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXBYTES, retlen, |
872c91ae | 638 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
8e84507e NIS |
639 | } |
640 | ||
b76347f2 | 641 | /* |
35a4481c | 642 | =for apidoc A|STRLEN|utf8_length|const U8 *s|const U8 *e |
b76347f2 JH |
643 | |
644 | Return the length of the UTF-8 char encoded string C<s> in characters. | |
02eb7b47 JH |
645 | Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end |
646 | up past C<e>, croaks. | |
b76347f2 JH |
647 | |
648 | =cut | |
649 | */ | |
650 | ||
651 | STRLEN | |
35a4481c | 652 | Perl_utf8_length(pTHX_ const U8 *s, const U8 *e) |
b76347f2 | 653 | { |
97aff369 | 654 | dVAR; |
b76347f2 JH |
655 | STRLEN len = 0; |
656 | ||
8850bf83 JH |
657 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g. |
658 | * the bitops (especially ~) can create illegal UTF-8. | |
659 | * In other words: in Perl UTF-8 is not just for Unicode. */ | |
660 | ||
a3b680e6 AL |
661 | if (e < s) |
662 | goto warn_and_return; | |
b76347f2 | 663 | while (s < e) { |
4373e329 | 664 | const U8 t = UTF8SKIP(s); |
901b21bf | 665 | if (e - s < t) { |
a3b680e6 | 666 | warn_and_return: |
901b21bf JH |
667 | if (ckWARN_d(WARN_UTF8)) { |
668 | if (PL_op) | |
669 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
a3b680e6 | 670 | "%s in %s", unees, OP_DESC(PL_op)); |
901b21bf JH |
671 | else |
672 | Perl_warner(aTHX_ packWARN(WARN_UTF8), unees); | |
673 | } | |
674 | return len; | |
675 | } | |
b76347f2 JH |
676 | s += t; |
677 | len++; | |
678 | } | |
679 | ||
680 | return len; | |
681 | } | |
682 | ||
b06226ff | 683 | /* |
35a4481c | 684 | =for apidoc A|IV|utf8_distance|const U8 *a|const U8 *b |
b06226ff | 685 | |
1e54db1a | 686 | Returns the number of UTF-8 characters between the UTF-8 pointers C<a> |
b06226ff JH |
687 | and C<b>. |
688 | ||
689 | WARNING: use only if you *know* that the pointers point inside the | |
690 | same UTF-8 buffer. | |
691 | ||
37607a96 PK |
692 | =cut |
693 | */ | |
a0ed51b3 | 694 | |
02eb7b47 | 695 | IV |
35a4481c | 696 | Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b) |
a0ed51b3 | 697 | { |
bf1665bc | 698 | return (a < b) ? -1 * (IV) utf8_length(a, b) : (IV) utf8_length(b, a); |
a0ed51b3 LW |
699 | } |
700 | ||
b06226ff | 701 | /* |
37607a96 | 702 | =for apidoc A|U8 *|utf8_hop|U8 *s|I32 off |
b06226ff | 703 | |
8850bf83 JH |
704 | Return the UTF-8 pointer C<s> displaced by C<off> characters, either |
705 | forward or backward. | |
b06226ff JH |
706 | |
707 | WARNING: do not use the following unless you *know* C<off> is within | |
8850bf83 JH |
708 | the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned |
709 | on the first byte of character or just after the last byte of a character. | |
b06226ff | 710 | |
37607a96 PK |
711 | =cut |
712 | */ | |
a0ed51b3 LW |
713 | |
714 | U8 * | |
4373e329 | 715 | Perl_utf8_hop(pTHX_ const U8 *s, I32 off) |
a0ed51b3 | 716 | { |
96a5add6 | 717 | PERL_UNUSED_CONTEXT; |
8850bf83 JH |
718 | /* Note: cannot use UTF8_IS_...() too eagerly here since e.g |
719 | * the bitops (especially ~) can create illegal UTF-8. | |
720 | * In other words: in Perl UTF-8 is not just for Unicode. */ | |
721 | ||
a0ed51b3 LW |
722 | if (off >= 0) { |
723 | while (off--) | |
724 | s += UTF8SKIP(s); | |
725 | } | |
726 | else { | |
727 | while (off++) { | |
728 | s--; | |
8850bf83 JH |
729 | while (UTF8_IS_CONTINUATION(*s)) |
730 | s--; | |
a0ed51b3 LW |
731 | } |
732 | } | |
4373e329 | 733 | return (U8 *)s; |
a0ed51b3 LW |
734 | } |
735 | ||
6940069f | 736 | /* |
eebe1485 | 737 | =for apidoc A|U8 *|utf8_to_bytes|U8 *s|STRLEN *len |
6940069f | 738 | |
1e54db1a | 739 | Converts a string C<s> of length C<len> from UTF-8 into byte encoding. |
246fae53 MG |
740 | Unlike C<bytes_to_utf8>, this over-writes the original string, and |
741 | updates len to contain the new length. | |
67e989fb | 742 | Returns zero on failure, setting C<len> to -1. |
6940069f | 743 | |
95be277c NC |
744 | If you need a copy of the string, see C<bytes_from_utf8>. |
745 | ||
6940069f GS |
746 | =cut |
747 | */ | |
748 | ||
749 | U8 * | |
37607a96 | 750 | Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len) |
6940069f | 751 | { |
d4c19fe8 AL |
752 | U8 * const save = s; |
753 | U8 * const send = s + *len; | |
6940069f | 754 | U8 *d; |
246fae53 | 755 | |
1e54db1a | 756 | /* ensure valid UTF-8 and chars < 256 before updating string */ |
d4c19fe8 | 757 | while (s < send) { |
dcad2880 JH |
758 | U8 c = *s++; |
759 | ||
1d72bdf6 NIS |
760 | if (!UTF8_IS_INVARIANT(c) && |
761 | (!UTF8_IS_DOWNGRADEABLE_START(c) || (s >= send) | |
762 | || !(c = *s++) || !UTF8_IS_CONTINUATION(c))) { | |
dcad2880 JH |
763 | *len = -1; |
764 | return 0; | |
765 | } | |
246fae53 | 766 | } |
dcad2880 JH |
767 | |
768 | d = s = save; | |
6940069f | 769 | while (s < send) { |
ed646e6e | 770 | STRLEN ulen; |
9041c2e3 | 771 | *d++ = (U8)utf8_to_uvchr(s, &ulen); |
ed646e6e | 772 | s += ulen; |
6940069f GS |
773 | } |
774 | *d = '\0'; | |
246fae53 | 775 | *len = d - save; |
6940069f GS |
776 | return save; |
777 | } | |
778 | ||
779 | /* | |
e1ec3a88 | 780 | =for apidoc A|U8 *|bytes_from_utf8|const U8 *s|STRLEN *len|bool *is_utf8 |
f9a63242 | 781 | |
1e54db1a | 782 | Converts a string C<s> of length C<len> from UTF-8 into byte encoding. |
35a4481c | 783 | Unlike C<utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to |
ef9edfd0 JH |
784 | the newly-created string, and updates C<len> to contain the new |
785 | length. Returns the original string if no conversion occurs, C<len> | |
786 | is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to | |
787 | 0 if C<s> is converted or contains all 7bit characters. | |
f9a63242 | 788 | |
37607a96 PK |
789 | =cut |
790 | */ | |
f9a63242 JH |
791 | |
792 | U8 * | |
e1ec3a88 | 793 | Perl_bytes_from_utf8(pTHX_ const U8 *s, STRLEN *len, bool *is_utf8) |
f9a63242 | 794 | { |
f9a63242 | 795 | U8 *d; |
e1ec3a88 AL |
796 | const U8 *start = s; |
797 | const U8 *send; | |
f9a63242 JH |
798 | I32 count = 0; |
799 | ||
96a5add6 | 800 | PERL_UNUSED_CONTEXT; |
f9a63242 | 801 | if (!*is_utf8) |
73d840c0 | 802 | return (U8 *)start; |
f9a63242 | 803 | |
1e54db1a | 804 | /* ensure valid UTF-8 and chars < 256 before converting string */ |
f9a63242 | 805 | for (send = s + *len; s < send;) { |
e1ec3a88 | 806 | U8 c = *s++; |
1d72bdf6 | 807 | if (!UTF8_IS_INVARIANT(c)) { |
db42d148 NIS |
808 | if (UTF8_IS_DOWNGRADEABLE_START(c) && s < send && |
809 | (c = *s++) && UTF8_IS_CONTINUATION(c)) | |
810 | count++; | |
811 | else | |
73d840c0 | 812 | return (U8 *)start; |
db42d148 | 813 | } |
f9a63242 JH |
814 | } |
815 | ||
35da51f7 | 816 | *is_utf8 = FALSE; |
f9a63242 | 817 | |
212542aa | 818 | Newx(d, (*len) - count + 1, U8); |
ef9edfd0 | 819 | s = start; start = d; |
f9a63242 JH |
820 | while (s < send) { |
821 | U8 c = *s++; | |
c4d5f83a NIS |
822 | if (!UTF8_IS_INVARIANT(c)) { |
823 | /* Then it is two-byte encoded */ | |
824 | c = UTF8_ACCUMULATE(NATIVE_TO_UTF(c), *s++); | |
825 | c = ASCII_TO_NATIVE(c); | |
826 | } | |
827 | *d++ = c; | |
f9a63242 JH |
828 | } |
829 | *d = '\0'; | |
830 | *len = d - start; | |
73d840c0 | 831 | return (U8 *)start; |
f9a63242 JH |
832 | } |
833 | ||
834 | /* | |
35a4481c | 835 | =for apidoc A|U8 *|bytes_to_utf8|const U8 *s|STRLEN *len |
6940069f | 836 | |
1e54db1a | 837 | Converts a string C<s> of length C<len> from ASCII into UTF-8 encoding. |
6662521e GS |
838 | Returns a pointer to the newly-created string, and sets C<len> to |
839 | reflect the new length. | |
6940069f | 840 | |
1e54db1a | 841 | If you want to convert to UTF-8 from other encodings than ASCII, |
c9ada85f JH |
842 | see sv_recode_to_utf8(). |
843 | ||
497711e7 | 844 | =cut |
6940069f GS |
845 | */ |
846 | ||
847 | U8* | |
35a4481c | 848 | Perl_bytes_to_utf8(pTHX_ const U8 *s, STRLEN *len) |
6940069f | 849 | { |
35a4481c | 850 | const U8 * const send = s + (*len); |
6940069f GS |
851 | U8 *d; |
852 | U8 *dst; | |
96a5add6 | 853 | PERL_UNUSED_CONTEXT; |
6940069f | 854 | |
212542aa | 855 | Newx(d, (*len) * 2 + 1, U8); |
6940069f GS |
856 | dst = d; |
857 | ||
858 | while (s < send) { | |
35a4481c | 859 | const UV uv = NATIVE_TO_ASCII(*s++); |
c4d5f83a | 860 | if (UNI_IS_INVARIANT(uv)) |
eb160463 | 861 | *d++ = (U8)UTF_TO_NATIVE(uv); |
6940069f | 862 | else { |
eb160463 GS |
863 | *d++ = (U8)UTF8_EIGHT_BIT_HI(uv); |
864 | *d++ = (U8)UTF8_EIGHT_BIT_LO(uv); | |
6940069f GS |
865 | } |
866 | } | |
867 | *d = '\0'; | |
6662521e | 868 | *len = d-dst; |
6940069f GS |
869 | return dst; |
870 | } | |
871 | ||
a0ed51b3 | 872 | /* |
dea0fc0b | 873 | * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8. |
a0ed51b3 LW |
874 | * |
875 | * Destination must be pre-extended to 3/2 source. Do not use in-place. | |
876 | * We optimize for native, for obvious reasons. */ | |
877 | ||
878 | U8* | |
dea0fc0b | 879 | Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 | 880 | { |
dea0fc0b JH |
881 | U8* pend; |
882 | U8* dstart = d; | |
883 | ||
1de9afcd RGS |
884 | if (bytelen == 1 && p[0] == 0) { /* Be understanding. */ |
885 | d[0] = 0; | |
886 | *newlen = 1; | |
887 | return d; | |
888 | } | |
889 | ||
dea0fc0b | 890 | if (bytelen & 1) |
014ead4b | 891 | Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen %"UVf, (UV)bytelen); |
dea0fc0b JH |
892 | |
893 | pend = p + bytelen; | |
894 | ||
a0ed51b3 | 895 | while (p < pend) { |
dea0fc0b JH |
896 | UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */ |
897 | p += 2; | |
a0ed51b3 | 898 | if (uv < 0x80) { |
eb160463 | 899 | *d++ = (U8)uv; |
a0ed51b3 LW |
900 | continue; |
901 | } | |
902 | if (uv < 0x800) { | |
eb160463 GS |
903 | *d++ = (U8)(( uv >> 6) | 0xc0); |
904 | *d++ = (U8)(( uv & 0x3f) | 0x80); | |
a0ed51b3 LW |
905 | continue; |
906 | } | |
907 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ | |
30f84f9e TD |
908 | UV low = (p[0] << 8) + p[1]; |
909 | p += 2; | |
dea0fc0b JH |
910 | if (low < 0xdc00 || low >= 0xdfff) |
911 | Perl_croak(aTHX_ "Malformed UTF-16 surrogate"); | |
a0ed51b3 LW |
912 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
913 | } | |
914 | if (uv < 0x10000) { | |
eb160463 GS |
915 | *d++ = (U8)(( uv >> 12) | 0xe0); |
916 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); | |
917 | *d++ = (U8)(( uv & 0x3f) | 0x80); | |
a0ed51b3 LW |
918 | continue; |
919 | } | |
920 | else { | |
eb160463 GS |
921 | *d++ = (U8)(( uv >> 18) | 0xf0); |
922 | *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80); | |
923 | *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80); | |
924 | *d++ = (U8)(( uv & 0x3f) | 0x80); | |
a0ed51b3 LW |
925 | continue; |
926 | } | |
927 | } | |
dea0fc0b | 928 | *newlen = d - dstart; |
a0ed51b3 LW |
929 | return d; |
930 | } | |
931 | ||
932 | /* Note: this one is slightly destructive of the source. */ | |
933 | ||
934 | U8* | |
dea0fc0b | 935 | Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen) |
a0ed51b3 LW |
936 | { |
937 | U8* s = (U8*)p; | |
d4c19fe8 | 938 | U8* const send = s + bytelen; |
a0ed51b3 | 939 | while (s < send) { |
d4c19fe8 | 940 | const U8 tmp = s[0]; |
a0ed51b3 LW |
941 | s[0] = s[1]; |
942 | s[1] = tmp; | |
943 | s += 2; | |
944 | } | |
dea0fc0b | 945 | return utf16_to_utf8(p, d, bytelen, newlen); |
a0ed51b3 LW |
946 | } |
947 | ||
948 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ | |
949 | ||
950 | bool | |
84afefe6 | 951 | Perl_is_uni_alnum(pTHX_ UV c) |
a0ed51b3 | 952 | { |
89ebb4a3 | 953 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 954 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 LW |
955 | return is_utf8_alnum(tmpbuf); |
956 | } | |
957 | ||
958 | bool | |
84afefe6 | 959 | Perl_is_uni_alnumc(pTHX_ UV c) |
b8c5462f | 960 | { |
89ebb4a3 | 961 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 962 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f JH |
963 | return is_utf8_alnumc(tmpbuf); |
964 | } | |
965 | ||
966 | bool | |
84afefe6 | 967 | Perl_is_uni_idfirst(pTHX_ UV c) |
a0ed51b3 | 968 | { |
89ebb4a3 | 969 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 970 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 LW |
971 | return is_utf8_idfirst(tmpbuf); |
972 | } | |
973 | ||
974 | bool | |
84afefe6 | 975 | Perl_is_uni_alpha(pTHX_ UV c) |
a0ed51b3 | 976 | { |
89ebb4a3 | 977 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 978 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 LW |
979 | return is_utf8_alpha(tmpbuf); |
980 | } | |
981 | ||
982 | bool | |
84afefe6 | 983 | Perl_is_uni_ascii(pTHX_ UV c) |
4d61ec05 | 984 | { |
89ebb4a3 | 985 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 986 | uvchr_to_utf8(tmpbuf, c); |
4d61ec05 GS |
987 | return is_utf8_ascii(tmpbuf); |
988 | } | |
989 | ||
990 | bool | |
84afefe6 | 991 | Perl_is_uni_space(pTHX_ UV c) |
a0ed51b3 | 992 | { |
89ebb4a3 | 993 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 994 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 LW |
995 | return is_utf8_space(tmpbuf); |
996 | } | |
997 | ||
998 | bool | |
84afefe6 | 999 | Perl_is_uni_digit(pTHX_ UV c) |
a0ed51b3 | 1000 | { |
89ebb4a3 | 1001 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 1002 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 LW |
1003 | return is_utf8_digit(tmpbuf); |
1004 | } | |
1005 | ||
1006 | bool | |
84afefe6 | 1007 | Perl_is_uni_upper(pTHX_ UV c) |
a0ed51b3 | 1008 | { |
89ebb4a3 | 1009 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 1010 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 LW |
1011 | return is_utf8_upper(tmpbuf); |
1012 | } | |
1013 | ||
1014 | bool | |
84afefe6 | 1015 | Perl_is_uni_lower(pTHX_ UV c) |
a0ed51b3 | 1016 | { |
89ebb4a3 | 1017 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 1018 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 LW |
1019 | return is_utf8_lower(tmpbuf); |
1020 | } | |
1021 | ||
1022 | bool | |
84afefe6 | 1023 | Perl_is_uni_cntrl(pTHX_ UV c) |
b8c5462f | 1024 | { |
89ebb4a3 | 1025 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 1026 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f JH |
1027 | return is_utf8_cntrl(tmpbuf); |
1028 | } | |
1029 | ||
1030 | bool | |
84afefe6 | 1031 | Perl_is_uni_graph(pTHX_ UV c) |
b8c5462f | 1032 | { |
89ebb4a3 | 1033 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 1034 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f JH |
1035 | return is_utf8_graph(tmpbuf); |
1036 | } | |
1037 | ||
1038 | bool | |
84afefe6 | 1039 | Perl_is_uni_print(pTHX_ UV c) |
a0ed51b3 | 1040 | { |
89ebb4a3 | 1041 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 1042 | uvchr_to_utf8(tmpbuf, c); |
a0ed51b3 LW |
1043 | return is_utf8_print(tmpbuf); |
1044 | } | |
1045 | ||
b8c5462f | 1046 | bool |
84afefe6 | 1047 | Perl_is_uni_punct(pTHX_ UV c) |
b8c5462f | 1048 | { |
89ebb4a3 | 1049 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
230880c1 | 1050 | uvchr_to_utf8(tmpbuf, c); |
b8c5462f JH |
1051 | return is_utf8_punct(tmpbuf); |
1052 | } | |
1053 | ||
4d61ec05 | 1054 | bool |
84afefe6 | 1055 | Perl_is_uni_xdigit(pTHX_ UV c) |
4d61ec05 | 1056 | { |
89ebb4a3 | 1057 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
230880c1 | 1058 | uvchr_to_utf8(tmpbuf, c); |
4d61ec05 GS |
1059 | return is_utf8_xdigit(tmpbuf); |
1060 | } | |
1061 | ||
84afefe6 JH |
1062 | UV |
1063 | Perl_to_uni_upper(pTHX_ UV c, U8* p, STRLEN *lenp) | |
a0ed51b3 | 1064 | { |
0ebc6274 JH |
1065 | uvchr_to_utf8(p, c); |
1066 | return to_utf8_upper(p, p, lenp); | |
a0ed51b3 LW |
1067 | } |
1068 | ||
84afefe6 JH |
1069 | UV |
1070 | Perl_to_uni_title(pTHX_ UV c, U8* p, STRLEN *lenp) | |
a0ed51b3 | 1071 | { |
0ebc6274 JH |
1072 | uvchr_to_utf8(p, c); |
1073 | return to_utf8_title(p, p, lenp); | |
a0ed51b3 LW |
1074 | } |
1075 | ||
84afefe6 JH |
1076 | UV |
1077 | Perl_to_uni_lower(pTHX_ UV c, U8* p, STRLEN *lenp) | |
a0ed51b3 | 1078 | { |
0ebc6274 JH |
1079 | uvchr_to_utf8(p, c); |
1080 | return to_utf8_lower(p, p, lenp); | |
a0ed51b3 LW |
1081 | } |
1082 | ||
84afefe6 JH |
1083 | UV |
1084 | Perl_to_uni_fold(pTHX_ UV c, U8* p, STRLEN *lenp) | |
1085 | { | |
0ebc6274 JH |
1086 | uvchr_to_utf8(p, c); |
1087 | return to_utf8_fold(p, p, lenp); | |
84afefe6 JH |
1088 | } |
1089 | ||
a0ed51b3 LW |
1090 | /* for now these all assume no locale info available for Unicode > 255 */ |
1091 | ||
1092 | bool | |
84afefe6 | 1093 | Perl_is_uni_alnum_lc(pTHX_ UV c) |
a0ed51b3 LW |
1094 | { |
1095 | return is_uni_alnum(c); /* XXX no locale support yet */ | |
1096 | } | |
1097 | ||
1098 | bool | |
84afefe6 | 1099 | Perl_is_uni_alnumc_lc(pTHX_ UV c) |
b8c5462f JH |
1100 | { |
1101 | return is_uni_alnumc(c); /* XXX no locale support yet */ | |
1102 | } | |
1103 | ||
1104 | bool | |
84afefe6 | 1105 | Perl_is_uni_idfirst_lc(pTHX_ UV c) |
a0ed51b3 LW |
1106 | { |
1107 | return is_uni_idfirst(c); /* XXX no locale support yet */ | |
1108 | } | |
1109 | ||
1110 | bool | |
84afefe6 | 1111 | Perl_is_uni_alpha_lc(pTHX_ UV c) |
a0ed51b3 LW |
1112 | { |
1113 | return is_uni_alpha(c); /* XXX no locale support yet */ | |
1114 | } | |
1115 | ||
1116 | bool | |
84afefe6 | 1117 | Perl_is_uni_ascii_lc(pTHX_ UV c) |
4d61ec05 GS |
1118 | { |
1119 | return is_uni_ascii(c); /* XXX no locale support yet */ | |
1120 | } | |
1121 | ||
1122 | bool | |
84afefe6 | 1123 | Perl_is_uni_space_lc(pTHX_ UV c) |
a0ed51b3 LW |
1124 | { |
1125 | return is_uni_space(c); /* XXX no locale support yet */ | |
1126 | } | |
1127 | ||
1128 | bool | |
84afefe6 | 1129 | Perl_is_uni_digit_lc(pTHX_ UV c) |
a0ed51b3 LW |
1130 | { |
1131 | return is_uni_digit(c); /* XXX no locale support yet */ | |
1132 | } | |
1133 | ||
1134 | bool | |
84afefe6 | 1135 | Perl_is_uni_upper_lc(pTHX_ UV c) |
a0ed51b3 LW |
1136 | { |
1137 | return is_uni_upper(c); /* XXX no locale support yet */ | |
1138 | } | |
1139 | ||
1140 | bool | |
84afefe6 | 1141 | Perl_is_uni_lower_lc(pTHX_ UV c) |
a0ed51b3 LW |
1142 | { |
1143 | return is_uni_lower(c); /* XXX no locale support yet */ | |
1144 | } | |
1145 | ||
1146 | bool | |
84afefe6 | 1147 | Perl_is_uni_cntrl_lc(pTHX_ UV c) |
b8c5462f JH |
1148 | { |
1149 | return is_uni_cntrl(c); /* XXX no locale support yet */ | |
1150 | } | |
1151 | ||
1152 | bool | |
84afefe6 | 1153 | Perl_is_uni_graph_lc(pTHX_ UV c) |
b8c5462f JH |
1154 | { |
1155 | return is_uni_graph(c); /* XXX no locale support yet */ | |
1156 | } | |
1157 | ||
1158 | bool | |
84afefe6 | 1159 | Perl_is_uni_print_lc(pTHX_ UV c) |
a0ed51b3 LW |
1160 | { |
1161 | return is_uni_print(c); /* XXX no locale support yet */ | |
1162 | } | |
1163 | ||
b8c5462f | 1164 | bool |
84afefe6 | 1165 | Perl_is_uni_punct_lc(pTHX_ UV c) |
b8c5462f JH |
1166 | { |
1167 | return is_uni_punct(c); /* XXX no locale support yet */ | |
1168 | } | |
1169 | ||
4d61ec05 | 1170 | bool |
84afefe6 | 1171 | Perl_is_uni_xdigit_lc(pTHX_ UV c) |
4d61ec05 GS |
1172 | { |
1173 | return is_uni_xdigit(c); /* XXX no locale support yet */ | |
1174 | } | |
1175 | ||
b7ac61fa JH |
1176 | U32 |
1177 | Perl_to_uni_upper_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_upper(c, tmpbuf, &len); |
b7ac61fa JH |
1184 | } |
1185 | ||
1186 | U32 | |
1187 | Perl_to_uni_title_lc(pTHX_ U32 c) | |
1188 | { | |
ee099d14 JH |
1189 | /* XXX returns only the first character XXX -- do not use XXX */ |
1190 | /* XXX no locale support yet */ | |
1191 | STRLEN len; | |
89ebb4a3 | 1192 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
ee099d14 | 1193 | return (U32)to_uni_title(c, tmpbuf, &len); |
b7ac61fa JH |
1194 | } |
1195 | ||
1196 | U32 | |
1197 | Perl_to_uni_lower_lc(pTHX_ U32 c) | |
1198 | { | |
ee099d14 JH |
1199 | /* XXX returns only the first character -- do not use XXX */ |
1200 | /* XXX no locale support yet */ | |
1201 | STRLEN len; | |
89ebb4a3 | 1202 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
ee099d14 | 1203 | return (U32)to_uni_lower(c, tmpbuf, &len); |
b7ac61fa JH |
1204 | } |
1205 | ||
7452cf6a | 1206 | static bool |
5141f98e | 1207 | S_is_utf8_common(pTHX_ const U8 *const p, SV **swash, |
bde6a22d NC |
1208 | const char *const swashname) |
1209 | { | |
97aff369 | 1210 | dVAR; |
bde6a22d NC |
1211 | if (!is_utf8_char(p)) |
1212 | return FALSE; | |
1213 | if (!*swash) | |
711a919c | 1214 | *swash = swash_init("utf8", swashname, &PL_sv_undef, 1, 0); |
bde6a22d NC |
1215 | return swash_fetch(*swash, p, TRUE) != 0; |
1216 | } | |
1217 | ||
1218 | bool | |
7fc63493 | 1219 | Perl_is_utf8_alnum(pTHX_ const U8 *p) |
a0ed51b3 | 1220 | { |
97aff369 | 1221 | dVAR; |
671c33bf NC |
1222 | /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true |
1223 | * descendant of isalnum(3), in other words, it doesn't | |
1224 | * contain the '_'. --jhi */ | |
d4c19fe8 | 1225 | return is_utf8_common(p, &PL_utf8_alnum, "IsWord"); |
a0ed51b3 LW |
1226 | } |
1227 | ||
1228 | bool | |
7fc63493 | 1229 | Perl_is_utf8_alnumc(pTHX_ const U8 *p) |
b8c5462f | 1230 | { |
97aff369 | 1231 | dVAR; |
d4c19fe8 | 1232 | return is_utf8_common(p, &PL_utf8_alnumc, "IsAlnumC"); |
b8c5462f JH |
1233 | } |
1234 | ||
1235 | bool | |
7fc63493 | 1236 | Perl_is_utf8_idfirst(pTHX_ const U8 *p) /* The naming is historical. */ |
a0ed51b3 | 1237 | { |
97aff369 | 1238 | dVAR; |
82686b01 JH |
1239 | if (*p == '_') |
1240 | return TRUE; | |
bde6a22d | 1241 | /* is_utf8_idstart would be more logical. */ |
d4c19fe8 | 1242 | return is_utf8_common(p, &PL_utf8_idstart, "IdStart"); |
82686b01 JH |
1243 | } |
1244 | ||
1245 | bool | |
7fc63493 | 1246 | Perl_is_utf8_idcont(pTHX_ const U8 *p) |
82686b01 | 1247 | { |
97aff369 | 1248 | dVAR; |
82686b01 JH |
1249 | if (*p == '_') |
1250 | return TRUE; | |
d4c19fe8 | 1251 | return is_utf8_common(p, &PL_utf8_idcont, "IdContinue"); |
a0ed51b3 LW |
1252 | } |
1253 | ||
1254 | bool | |
7fc63493 | 1255 | Perl_is_utf8_alpha(pTHX_ const U8 *p) |
a0ed51b3 | 1256 | { |
97aff369 | 1257 | dVAR; |
d4c19fe8 | 1258 | return is_utf8_common(p, &PL_utf8_alpha, "IsAlpha"); |
a0ed51b3 LW |
1259 | } |
1260 | ||
1261 | bool | |
7fc63493 | 1262 | Perl_is_utf8_ascii(pTHX_ const U8 *p) |
b8c5462f | 1263 | { |
97aff369 | 1264 | dVAR; |
d4c19fe8 | 1265 | return is_utf8_common(p, &PL_utf8_ascii, "IsAscii"); |
b8c5462f JH |
1266 | } |
1267 | ||
1268 | bool | |
7fc63493 | 1269 | Perl_is_utf8_space(pTHX_ const U8 *p) |
a0ed51b3 | 1270 | { |
97aff369 | 1271 | dVAR; |
d4c19fe8 | 1272 | return is_utf8_common(p, &PL_utf8_space, "IsSpacePerl"); |
a0ed51b3 LW |
1273 | } |
1274 | ||
1275 | bool | |
7fc63493 | 1276 | Perl_is_utf8_digit(pTHX_ const U8 *p) |
a0ed51b3 | 1277 | { |
97aff369 | 1278 | dVAR; |
d4c19fe8 | 1279 | return is_utf8_common(p, &PL_utf8_digit, "IsDigit"); |
a0ed51b3 LW |
1280 | } |
1281 | ||
1282 | bool | |
7fc63493 | 1283 | Perl_is_utf8_upper(pTHX_ const U8 *p) |
a0ed51b3 | 1284 | { |
97aff369 | 1285 | dVAR; |
d4c19fe8 | 1286 | return is_utf8_common(p, &PL_utf8_upper, "IsUppercase"); |
a0ed51b3 LW |
1287 | } |
1288 | ||
1289 | bool | |
7fc63493 | 1290 | Perl_is_utf8_lower(pTHX_ const U8 *p) |
a0ed51b3 | 1291 | { |
97aff369 | 1292 | dVAR; |
d4c19fe8 | 1293 | return is_utf8_common(p, &PL_utf8_lower, "IsLowercase"); |
a0ed51b3 LW |
1294 | } |
1295 | ||
1296 | bool | |
7fc63493 | 1297 | Perl_is_utf8_cntrl(pTHX_ const U8 *p) |
b8c5462f | 1298 | { |
97aff369 | 1299 | dVAR; |
d4c19fe8 | 1300 | return is_utf8_common(p, &PL_utf8_cntrl, "IsCntrl"); |
b8c5462f JH |
1301 | } |
1302 | ||
1303 | bool | |
7fc63493 | 1304 | Perl_is_utf8_graph(pTHX_ const U8 *p) |
b8c5462f | 1305 | { |
97aff369 | 1306 | dVAR; |
d4c19fe8 | 1307 | return is_utf8_common(p, &PL_utf8_graph, "IsGraph"); |
b8c5462f JH |
1308 | } |
1309 | ||
1310 | bool | |
7fc63493 | 1311 | Perl_is_utf8_print(pTHX_ const U8 *p) |
a0ed51b3 | 1312 | { |
97aff369 | 1313 | dVAR; |
d4c19fe8 | 1314 | return is_utf8_common(p, &PL_utf8_print, "IsPrint"); |
a0ed51b3 LW |
1315 | } |
1316 | ||
1317 | bool | |
7fc63493 | 1318 | Perl_is_utf8_punct(pTHX_ const U8 *p) |
b8c5462f | 1319 | { |
97aff369 | 1320 | dVAR; |
d4c19fe8 | 1321 | return is_utf8_common(p, &PL_utf8_punct, "IsPunct"); |
b8c5462f JH |
1322 | } |
1323 | ||
1324 | bool | |
7fc63493 | 1325 | Perl_is_utf8_xdigit(pTHX_ const U8 *p) |
b8c5462f | 1326 | { |
97aff369 | 1327 | dVAR; |
d4c19fe8 | 1328 | return is_utf8_common(p, &PL_utf8_xdigit, "Isxdigit"); |
b8c5462f JH |
1329 | } |
1330 | ||
1331 | bool | |
7fc63493 | 1332 | Perl_is_utf8_mark(pTHX_ const U8 *p) |
a0ed51b3 | 1333 | { |
97aff369 | 1334 | dVAR; |
d4c19fe8 | 1335 | return is_utf8_common(p, &PL_utf8_mark, "IsM"); |
a0ed51b3 LW |
1336 | } |
1337 | ||
6b5c0936 JH |
1338 | /* |
1339 | =for apidoc A|UV|to_utf8_case|U8 *p|U8* ustrp|STRLEN *lenp|SV **swash|char *normal|char *special | |
1340 | ||
1341 | The "p" contains the pointer to the UTF-8 string encoding | |
1342 | the character that is being converted. | |
1343 | ||
1344 | The "ustrp" is a pointer to the character buffer to put the | |
1345 | conversion result to. The "lenp" is a pointer to the length | |
1346 | of the result. | |
1347 | ||
0134edef | 1348 | The "swashp" is a pointer to the swash to use. |
6b5c0936 | 1349 | |
0134edef | 1350 | Both the special and normal mappings are stored lib/unicore/To/Foo.pl, |
8fe4d5b2 | 1351 | and loaded by SWASHNEW, using lib/utf8_heavy.pl. The special (usually, |
0134edef | 1352 | but not always, a multicharacter mapping), is tried first. |
6b5c0936 | 1353 | |
0134edef JH |
1354 | The "special" is a string like "utf8::ToSpecLower", which means the |
1355 | hash %utf8::ToSpecLower. The access to the hash is through | |
1356 | Perl_to_utf8_case(). | |
6b5c0936 | 1357 | |
0134edef JH |
1358 | The "normal" is a string like "ToLower" which means the swash |
1359 | %utf8::ToLower. | |
1360 | ||
1361 | =cut */ | |
6b5c0936 | 1362 | |
2104c8d9 | 1363 | UV |
9a957fbc AL |
1364 | Perl_to_utf8_case(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp, |
1365 | SV **swashp, const char *normal, const char *special) | |
a0ed51b3 | 1366 | { |
97aff369 | 1367 | dVAR; |
89ebb4a3 | 1368 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; |
0134edef | 1369 | STRLEN len = 0; |
a0ed51b3 | 1370 | |
aec46f14 | 1371 | const UV uv0 = utf8_to_uvchr(p, NULL); |
1feea2c7 JH |
1372 | /* The NATIVE_TO_UNI() and UNI_TO_NATIVE() mappings |
1373 | * are necessary in EBCDIC, they are redundant no-ops | |
1374 | * in ASCII-ish platforms, and hopefully optimized away. */ | |
f54cb97a | 1375 | const UV uv1 = NATIVE_TO_UNI(uv0); |
1feea2c7 | 1376 | uvuni_to_utf8(tmpbuf, uv1); |
0134edef JH |
1377 | |
1378 | if (!*swashp) /* load on-demand */ | |
1379 | *swashp = swash_init("utf8", normal, &PL_sv_undef, 4, 0); | |
1380 | ||
b08cf34e JH |
1381 | /* The 0xDF is the only special casing Unicode code point below 0x100. */ |
1382 | if (special && (uv1 == 0xDF || uv1 > 0xFF)) { | |
0134edef | 1383 | /* It might be "special" (sometimes, but not always, |
2a37f04d | 1384 | * a multicharacter mapping) */ |
35da51f7 | 1385 | HV * const hv = get_hv(special, FALSE); |
b08cf34e JH |
1386 | SV **svp; |
1387 | ||
35da51f7 | 1388 | if (hv && |
b08cf34e JH |
1389 | (svp = hv_fetch(hv, (const char*)tmpbuf, UNISKIP(uv1), FALSE)) && |
1390 | (*svp)) { | |
cfd0369c | 1391 | const char *s; |
47654450 | 1392 | |
cfd0369c | 1393 | s = SvPV_const(*svp, len); |
47654450 JH |
1394 | if (len == 1) |
1395 | len = uvuni_to_utf8(ustrp, NATIVE_TO_UNI(*(U8*)s)) - ustrp; | |
2a37f04d | 1396 | else { |
2f9475ad JH |
1397 | #ifdef EBCDIC |
1398 | /* If we have EBCDIC we need to remap the characters | |
1399 | * since any characters in the low 256 are Unicode | |
1400 | * code points, not EBCDIC. */ | |
7cda7a3d | 1401 | U8 *t = (U8*)s, *tend = t + len, *d; |
2f9475ad JH |
1402 | |
1403 | d = tmpbuf; | |
b08cf34e | 1404 | if (SvUTF8(*svp)) { |
2f9475ad JH |
1405 | STRLEN tlen = 0; |
1406 | ||
1407 | while (t < tend) { | |
d4c19fe8 | 1408 | const UV c = utf8_to_uvchr(t, &tlen); |
2f9475ad JH |
1409 | if (tlen > 0) { |
1410 | d = uvchr_to_utf8(d, UNI_TO_NATIVE(c)); | |
1411 | t += tlen; | |
1412 | } | |
1413 | else | |
1414 | break; | |
1415 | } | |
1416 | } | |
1417 | else { | |
36fec512 JH |
1418 | while (t < tend) { |
1419 | d = uvchr_to_utf8(d, UNI_TO_NATIVE(*t)); | |
1420 | t++; | |
1421 | } | |
2f9475ad JH |
1422 | } |
1423 | len = d - tmpbuf; | |
1424 | Copy(tmpbuf, ustrp, len, U8); | |
1425 | #else | |
d2dcd0fb | 1426 | Copy(s, ustrp, len, U8); |
2f9475ad | 1427 | #endif |
29e98929 | 1428 | } |
983ffd37 | 1429 | } |
0134edef JH |
1430 | } |
1431 | ||
1432 | if (!len && *swashp) { | |
d4c19fe8 AL |
1433 | const UV uv2 = swash_fetch(*swashp, tmpbuf, TRUE); |
1434 | ||
0134edef JH |
1435 | if (uv2) { |
1436 | /* It was "normal" (a single character mapping). */ | |
d4c19fe8 | 1437 | const UV uv3 = UNI_TO_NATIVE(uv2); |
e9101d72 | 1438 | len = uvchr_to_utf8(ustrp, uv3) - ustrp; |
2a37f04d JH |
1439 | } |
1440 | } | |
1feea2c7 | 1441 | |
0134edef JH |
1442 | if (!len) /* Neither: just copy. */ |
1443 | len = uvchr_to_utf8(ustrp, uv0) - ustrp; | |
1444 | ||
2a37f04d JH |
1445 | if (lenp) |
1446 | *lenp = len; | |
1447 | ||
0134edef | 1448 | return len ? utf8_to_uvchr(ustrp, 0) : 0; |
a0ed51b3 LW |
1449 | } |
1450 | ||
d3e79532 | 1451 | /* |
7fc63493 | 1452 | =for apidoc A|UV|to_utf8_upper|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 JH |
1453 | |
1454 | Convert the UTF-8 encoded character at p to its uppercase version and | |
1455 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note | |
89ebb4a3 JH |
1456 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since |
1457 | the uppercase version may be longer than the original character. | |
d3e79532 JH |
1458 | |
1459 | The first character of the uppercased version is returned | |
1460 | (but note, as explained above, that there may be more.) | |
1461 | ||
1462 | =cut */ | |
1463 | ||
2104c8d9 | 1464 | UV |
7fc63493 | 1465 | Perl_to_utf8_upper(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 | 1466 | { |
97aff369 | 1467 | dVAR; |
983ffd37 | 1468 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 | 1469 | &PL_utf8_toupper, "ToUpper", "utf8::ToSpecUpper"); |
983ffd37 | 1470 | } |
a0ed51b3 | 1471 | |
d3e79532 | 1472 | /* |
7fc63493 | 1473 | =for apidoc A|UV|to_utf8_title|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 JH |
1474 | |
1475 | Convert the UTF-8 encoded character at p to its titlecase version and | |
1476 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note | |
89ebb4a3 JH |
1477 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the |
1478 | titlecase version may be longer than the original character. | |
d3e79532 JH |
1479 | |
1480 | The first character of the titlecased version is returned | |
1481 | (but note, as explained above, that there may be more.) | |
1482 | ||
1483 | =cut */ | |
1484 | ||
983ffd37 | 1485 | UV |
7fc63493 | 1486 | Perl_to_utf8_title(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
983ffd37 | 1487 | { |
97aff369 | 1488 | dVAR; |
983ffd37 | 1489 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 | 1490 | &PL_utf8_totitle, "ToTitle", "utf8::ToSpecTitle"); |
a0ed51b3 LW |
1491 | } |
1492 | ||
d3e79532 | 1493 | /* |
7fc63493 | 1494 | =for apidoc A|UV|to_utf8_lower|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 JH |
1495 | |
1496 | Convert the UTF-8 encoded character at p to its lowercase version and | |
1497 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note | |
89ebb4a3 JH |
1498 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the |
1499 | lowercase version may be longer than the original character. | |
d3e79532 JH |
1500 | |
1501 | The first character of the lowercased version is returned | |
1502 | (but note, as explained above, that there may be more.) | |
1503 | ||
1504 | =cut */ | |
1505 | ||
2104c8d9 | 1506 | UV |
7fc63493 | 1507 | Perl_to_utf8_lower(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
a0ed51b3 | 1508 | { |
97aff369 | 1509 | dVAR; |
983ffd37 | 1510 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
b4e400f9 JH |
1511 | &PL_utf8_tolower, "ToLower", "utf8::ToSpecLower"); |
1512 | } | |
1513 | ||
d3e79532 | 1514 | /* |
7fc63493 | 1515 | =for apidoc A|UV|to_utf8_fold|const U8 *p|U8 *ustrp|STRLEN *lenp |
d3e79532 JH |
1516 | |
1517 | Convert the UTF-8 encoded character at p to its foldcase version and | |
1518 | store that in UTF-8 in ustrp and its length in bytes in lenp. Note | |
89ebb4a3 | 1519 | that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the |
d3e79532 JH |
1520 | foldcase version may be longer than the original character (up to |
1521 | three characters). | |
1522 | ||
1523 | The first character of the foldcased version is returned | |
1524 | (but note, as explained above, that there may be more.) | |
1525 | ||
1526 | =cut */ | |
1527 | ||
b4e400f9 | 1528 | UV |
7fc63493 | 1529 | Perl_to_utf8_fold(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp) |
b4e400f9 | 1530 | { |
97aff369 | 1531 | dVAR; |
b4e400f9 JH |
1532 | return Perl_to_utf8_case(aTHX_ p, ustrp, lenp, |
1533 | &PL_utf8_tofold, "ToFold", "utf8::ToSpecFold"); | |
a0ed51b3 LW |
1534 | } |
1535 | ||
711a919c TS |
1536 | /* Note: |
1537 | * A "swash" is a swatch hash. | |
1538 | * A "swatch" is a bit vector generated by utf8.c:S_swash_get(). | |
1539 | * C<pkg> is a pointer to a package name for SWASHNEW, should be "utf8". | |
1540 | * For other parameters, see utf8::SWASHNEW in lib/utf8_heavy.pl. | |
1541 | */ | |
a0ed51b3 | 1542 | SV* |
7fc63493 | 1543 | Perl_swash_init(pTHX_ const char* pkg, const char* name, SV *listsv, I32 minbits, I32 none) |
a0ed51b3 | 1544 | { |
27da23d5 | 1545 | dVAR; |
a0ed51b3 | 1546 | SV* retval; |
9a957fbc | 1547 | SV* const tokenbufsv = sv_newmortal(); |
8e84507e | 1548 | dSP; |
7fc63493 AL |
1549 | const size_t pkg_len = strlen(pkg); |
1550 | const size_t name_len = strlen(name); | |
aec46f14 | 1551 | HV * const stash = gv_stashpvn(pkg, pkg_len, FALSE); |
f8be5cf0 | 1552 | SV* errsv_save; |
ce3b816e | 1553 | |
96ca9f55 DM |
1554 | PUSHSTACKi(PERLSI_MAGIC); |
1555 | ENTER; | |
1556 | SAVEI32(PL_hints); | |
1557 | PL_hints = 0; | |
1558 | save_re_context(); | |
1b026014 | 1559 | if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */ |
ce3b816e | 1560 | ENTER; |
f8be5cf0 | 1561 | errsv_save = newSVsv(ERRSV); |
dc0c6abb NC |
1562 | /* It is assumed that callers of this routine are not passing in any |
1563 | user derived data. */ | |
1564 | /* Need to do this after save_re_context() as it will set PL_tainted to | |
1565 | 1 while saving $1 etc (see the code after getrx: in Perl_magic_get). | |
1566 | Even line to create errsv_save can turn on PL_tainted. */ | |
1567 | SAVEBOOL(PL_tainted); | |
1568 | PL_tainted = 0; | |
71bed85a | 1569 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpvn(pkg,pkg_len), |
a0714e2c | 1570 | NULL); |
f8be5cf0 JH |
1571 | if (!SvTRUE(ERRSV)) |
1572 | sv_setsv(ERRSV, errsv_save); | |
1573 | SvREFCNT_dec(errsv_save); | |
ce3b816e GS |
1574 | LEAVE; |
1575 | } | |
1576 | SPAGAIN; | |
a0ed51b3 LW |
1577 | PUSHMARK(SP); |
1578 | EXTEND(SP,5); | |
71bed85a NC |
1579 | PUSHs(sv_2mortal(newSVpvn(pkg, pkg_len))); |
1580 | PUSHs(sv_2mortal(newSVpvn(name, name_len))); | |
a0ed51b3 LW |
1581 | PUSHs(listsv); |
1582 | PUSHs(sv_2mortal(newSViv(minbits))); | |
1583 | PUSHs(sv_2mortal(newSViv(none))); | |
1584 | PUTBACK; | |
923e4eb5 | 1585 | if (IN_PERL_COMPILETIME) { |
bf1fed83 | 1586 | /* XXX ought to be handled by lex_start */ |
82686b01 | 1587 | SAVEI32(PL_in_my); |
2b4bd638 | 1588 | PL_in_my = 0; |
bf1fed83 | 1589 | sv_setpv(tokenbufsv, PL_tokenbuf); |
82686b01 | 1590 | } |
f8be5cf0 | 1591 | errsv_save = newSVsv(ERRSV); |
864dbfa3 | 1592 | if (call_method("SWASHNEW", G_SCALAR)) |
8e84507e | 1593 | retval = newSVsv(*PL_stack_sp--); |
a0ed51b3 | 1594 | else |
e24b16f9 | 1595 | retval = &PL_sv_undef; |
f8be5cf0 JH |
1596 | if (!SvTRUE(ERRSV)) |
1597 | sv_setsv(ERRSV, errsv_save); | |
1598 | SvREFCNT_dec(errsv_save); | |
a0ed51b3 LW |
1599 | LEAVE; |
1600 | POPSTACK; | |
923e4eb5 | 1601 | if (IN_PERL_COMPILETIME) { |
bf1fed83 | 1602 | STRLEN len; |
aec46f14 | 1603 | const char* const pv = SvPV_const(tokenbufsv, len); |
bf1fed83 JH |
1604 | |
1605 | Copy(pv, PL_tokenbuf, len+1, char); | |
623e6609 | 1606 | CopHINTS_set(PL_curcop, PL_hints); |
a0ed51b3 | 1607 | } |
bc45ce41 JH |
1608 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) { |
1609 | if (SvPOK(retval)) | |
35c1215d | 1610 | Perl_croak(aTHX_ "Can't find Unicode property definition \"%"SVf"\"", |
95b63a38 | 1611 | (void*)retval); |
cea2e8a9 | 1612 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
bc45ce41 | 1613 | } |
a0ed51b3 LW |
1614 | return retval; |
1615 | } | |
1616 | ||
035d37be JH |
1617 | |
1618 | /* This API is wrong for special case conversions since we may need to | |
1619 | * return several Unicode characters for a single Unicode character | |
1620 | * (see lib/unicore/SpecCase.txt) The SWASHGET in lib/utf8_heavy.pl is | |
1621 | * the lower-level routine, and it is similarly broken for returning | |
1622 | * multiple values. --jhi */ | |
979f2922 | 1623 | /* Now SWASHGET is recasted into S_swash_get in this file. */ |
680c470c TS |
1624 | |
1625 | /* Note: | |
1626 | * Returns the value of property/mapping C<swash> for the first character | |
1627 | * of the string C<ptr>. If C<do_utf8> is true, the string C<ptr> is | |
1628 | * assumed to be in utf8. If C<do_utf8> is false, the string C<ptr> is | |
1629 | * assumed to be in native 8-bit encoding. Caches the swatch in C<swash>. | |
1630 | */ | |
a0ed51b3 | 1631 | UV |
680c470c | 1632 | Perl_swash_fetch(pTHX_ SV *swash, const U8 *ptr, bool do_utf8) |
a0ed51b3 | 1633 | { |
27da23d5 | 1634 | dVAR; |
680c470c | 1635 | HV* const hv = (HV*)SvRV(swash); |
3568d838 JH |
1636 | U32 klen; |
1637 | U32 off; | |
a0ed51b3 | 1638 | STRLEN slen; |
7d85a32c | 1639 | STRLEN needents; |
cfd0369c | 1640 | const U8 *tmps = NULL; |
a0ed51b3 | 1641 | U32 bit; |
979f2922 | 1642 | SV *swatch; |
3568d838 | 1643 | U8 tmputf8[2]; |
35da51f7 | 1644 | const UV c = NATIVE_TO_ASCII(*ptr); |
3568d838 JH |
1645 | |
1646 | if (!do_utf8 && !UNI_IS_INVARIANT(c)) { | |
979f2922 TS |
1647 | tmputf8[0] = (U8)UTF8_EIGHT_BIT_HI(c); |
1648 | tmputf8[1] = (U8)UTF8_EIGHT_BIT_LO(c); | |
1649 | ptr = tmputf8; | |
3568d838 JH |
1650 | } |
1651 | /* Given a UTF-X encoded char 0xAA..0xYY,0xZZ | |
1652 | * then the "swatch" is a vec() for al the chars which start | |
1653 | * with 0xAA..0xYY | |
1654 | * So the key in the hash (klen) is length of encoded char -1 | |
1655 | */ | |
1656 | klen = UTF8SKIP(ptr) - 1; | |
1657 | off = ptr[klen]; | |
a0ed51b3 | 1658 | |
979f2922 | 1659 | if (klen == 0) { |
7d85a32c | 1660 | /* If char in invariant then swatch is for all the invariant chars |
1e54db1a | 1661 | * In both UTF-8 and UTF-8-MOD that happens to be UTF_CONTINUATION_MARK |
7d85a32c | 1662 | */ |
979f2922 TS |
1663 | needents = UTF_CONTINUATION_MARK; |
1664 | off = NATIVE_TO_UTF(ptr[klen]); | |
1665 | } | |
1666 | else { | |
7d85a32c | 1667 | /* If char is encoded then swatch is for the prefix */ |
979f2922 TS |
1668 | needents = (1 << UTF_ACCUMULATION_SHIFT); |
1669 | off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK; | |
1670 | } | |
7d85a32c | 1671 | |
a0ed51b3 LW |
1672 | /* |
1673 | * This single-entry cache saves about 1/3 of the utf8 overhead in test | |
1674 | * suite. (That is, only 7-8% overall over just a hash cache. Still, | |
1675 | * it's nothing to sniff at.) Pity we usually come through at least | |
1676 | * two function calls to get here... | |
1677 | * | |
1678 | * NB: this code assumes that swatches are never modified, once generated! | |
1679 | */ | |
1680 | ||
3568d838 | 1681 | if (hv == PL_last_swash_hv && |
a0ed51b3 | 1682 | klen == PL_last_swash_klen && |
27da23d5 | 1683 | (!klen || memEQ((char *)ptr, (char *)PL_last_swash_key, klen)) ) |
a0ed51b3 LW |
1684 | { |
1685 | tmps = PL_last_swash_tmps; | |
1686 | slen = PL_last_swash_slen; | |
1687 | } | |
1688 | else { | |
1689 | /* Try our second-level swatch cache, kept in a hash. */ | |
e1ec3a88 | 1690 | SV** svp = hv_fetch(hv, (const char*)ptr, klen, FALSE); |
a0ed51b3 | 1691 | |
979f2922 TS |
1692 | /* If not cached, generate it via swash_get */ |
1693 | if (!svp || !SvPOK(*svp) | |
1694 | || !(tmps = (const U8*)SvPV_const(*svp, slen))) { | |
2b9d42f0 NIS |
1695 | /* We use utf8n_to_uvuni() as we want an index into |
1696 | Unicode tables, not a native character number. | |
1697 | */ | |
aec46f14 | 1698 | const UV code_point = utf8n_to_uvuni(ptr, UTF8_MAXBYTES, 0, |
872c91ae JH |
1699 | ckWARN(WARN_UTF8) ? |
1700 | 0 : UTF8_ALLOW_ANY); | |
680c470c | 1701 | swatch = swash_get(swash, |
979f2922 TS |
1702 | /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */ |
1703 | (klen) ? (code_point & ~(needents - 1)) : 0, | |
1704 | needents); | |
1705 | ||
923e4eb5 | 1706 | if (IN_PERL_COMPILETIME) |
623e6609 | 1707 | CopHINTS_set(PL_curcop, PL_hints); |
a0ed51b3 | 1708 | |
979f2922 | 1709 | svp = hv_store(hv, (const char *)ptr, klen, swatch, 0); |
a0ed51b3 | 1710 | |
979f2922 TS |
1711 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) |
1712 | || (slen << 3) < needents) | |
660a4616 | 1713 | Perl_croak(aTHX_ "panic: swash_fetch got improper swatch"); |
a0ed51b3 LW |
1714 | } |
1715 | ||
1716 | PL_last_swash_hv = hv; | |
1717 | PL_last_swash_klen = klen; | |
cfd0369c NC |
1718 | /* FIXME change interpvar.h? */ |
1719 | PL_last_swash_tmps = (U8 *) tmps; | |
a0ed51b3 LW |
1720 | PL_last_swash_slen = slen; |
1721 | if (klen) | |
1722 | Copy(ptr, PL_last_swash_key, klen, U8); | |
1723 | } | |
1724 | ||
9faf8d75 | 1725 | switch ((int)((slen << 3) / needents)) { |
a0ed51b3 LW |
1726 | case 1: |
1727 | bit = 1 << (off & 7); | |
1728 | off >>= 3; | |
1729 | return (tmps[off] & bit) != 0; | |
1730 | case 8: | |
1731 | return tmps[off]; | |
1732 | case 16: | |
1733 | off <<= 1; | |
1734 | return (tmps[off] << 8) + tmps[off + 1] ; | |
1735 | case 32: | |
1736 | off <<= 2; | |
1737 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; | |
1738 | } | |
660a4616 | 1739 | Perl_croak(aTHX_ "panic: swash_fetch got swatch of unexpected bit width"); |
a0ed51b3 | 1740 | } |
2b9d42f0 | 1741 | |
979f2922 TS |
1742 | /* Note: |
1743 | * Returns a swatch (a bit vector string) for a code point sequence | |
1744 | * that starts from the value C<start> and comprises the number C<span>. | |
1745 | * A C<swash> must be an object created by SWASHNEW (see lib/utf8_heavy.pl). | |
1746 | * Should be used via swash_fetch, which will cache the swatch in C<swash>. | |
1747 | */ | |
1748 | STATIC SV* | |
1749 | S_swash_get(pTHX_ SV* swash, UV start, UV span) | |
1750 | { | |
1751 | SV *swatch; | |
711a919c | 1752 | U8 *l, *lend, *x, *xend, *s; |
979f2922 TS |
1753 | STRLEN lcur, xcur, scur; |
1754 | ||
1755 | HV* const hv = (HV*)SvRV(swash); | |
017a3ce5 GA |
1756 | SV** const listsvp = hv_fetchs(hv, "LIST", FALSE); |
1757 | SV** const typesvp = hv_fetchs(hv, "TYPE", FALSE); | |
1758 | SV** const bitssvp = hv_fetchs(hv, "BITS", FALSE); | |
1759 | SV** const nonesvp = hv_fetchs(hv, "NONE", FALSE); | |
1760 | SV** const extssvp = hv_fetchs(hv, "EXTRAS", FALSE); | |
0bd48802 AL |
1761 | const U8* const typestr = (U8*)SvPV_nolen(*typesvp); |
1762 | const int typeto = typestr[0] == 'T' && typestr[1] == 'o'; | |
1763 | const STRLEN bits = SvUV(*bitssvp); | |
1764 | const STRLEN octets = bits >> 3; /* if bits == 1, then octets == 0 */ | |
1765 | const UV none = SvUV(*nonesvp); | |
1766 | const UV end = start + span; | |
979f2922 TS |
1767 | |
1768 | if (bits != 1 && bits != 8 && bits != 16 && bits != 32) { | |
660a4616 TS |
1769 | Perl_croak(aTHX_ "panic: swash_get doesn't expect bits %"UVuf, |
1770 | (UV)bits); | |
979f2922 TS |
1771 | } |
1772 | ||
1773 | /* create and initialize $swatch */ | |
396482e1 | 1774 | swatch = newSVpvs(""); |
979f2922 TS |
1775 | scur = octets ? (span * octets) : (span + 7) / 8; |
1776 | SvGROW(swatch, scur + 1); | |
1777 | s = (U8*)SvPVX(swatch); | |
1778 | if (octets && none) { | |
0bd48802 | 1779 | const U8* const e = s + scur; |
979f2922 TS |
1780 | while (s < e) { |
1781 | if (bits == 8) | |
1782 | *s++ = (U8)(none & 0xff); | |
1783 | else if (bits == 16) { | |
1784 | *s++ = (U8)((none >> 8) & 0xff); | |
1785 | *s++ = (U8)( none & 0xff); | |
1786 | } | |
1787 | else if (bits == 32) { | |
1788 | *s++ = (U8)((none >> 24) & 0xff); | |
1789 | *s++ = (U8)((none >> 16) & 0xff); | |
1790 | *s++ = (U8)((none >> 8) & 0xff); | |
1791 | *s++ = (U8)( none & 0xff); | |
1792 | } | |
1793 | } | |
1794 | *s = '\0'; | |
1795 | } | |
1796 | else { | |
1797 | (void)memzero((U8*)s, scur + 1); | |
1798 | } | |
1799 | SvCUR_set(swatch, scur); | |
1800 | s = (U8*)SvPVX(swatch); | |
1801 | ||
1802 | /* read $swash->{LIST} */ | |
1803 | l = (U8*)SvPV(*listsvp, lcur); | |
1804 | lend = l + lcur; | |
1805 | while (l < lend) { | |
35da51f7 | 1806 | UV min, max, val; |
979f2922 TS |
1807 | STRLEN numlen; |
1808 | I32 flags = PERL_SCAN_SILENT_ILLDIGIT | PERL_SCAN_DISALLOW_PREFIX; | |
1809 | ||
0bd48802 | 1810 | U8* const nl = (U8*)memchr(l, '\n', lend - l); |
979f2922 TS |
1811 | |
1812 | numlen = lend - l; | |
1813 | min = grok_hex((char *)l, &numlen, &flags, NULL); | |
1814 | if (numlen) | |
1815 | l += numlen; | |
1816 | else if (nl) { | |
1817 | l = nl + 1; /* 1 is length of "\n" */ | |
1818 | continue; | |
1819 | } | |
1820 | else { | |
1821 | l = lend; /* to LIST's end at which \n is not found */ | |
1822 | break; | |
1823 | } | |
1824 | ||
1825 | if (isBLANK(*l)) { | |
1826 | ++l; | |
1827 | flags = PERL_SCAN_SILENT_ILLDIGIT | PERL_SCAN_DISALLOW_PREFIX; | |
1828 | numlen = lend - l; | |
1829 | max = grok_hex((char *)l, &numlen, &flags, NULL); | |
1830 | if (numlen) | |
1831 | l += numlen; | |
1832 | else | |
1833 | max = min; | |
1834 | ||
1835 | if (octets) { | |
1836 | if (isBLANK(*l)) { | |
1837 | ++l; | |
1838 | flags = PERL_SCAN_SILENT_ILLDIGIT | | |
1839 | PERL_SCAN_DISALLOW_PREFIX; | |
1840 | numlen = lend - l; | |
1841 | val = grok_hex((char *)l, &numlen, &flags, NULL); | |
1842 | if (numlen) | |
1843 | l += numlen; | |
1844 | else | |
1845 | val = 0; | |
1846 | } | |
1847 | else { | |
1848 | val = 0; | |
1849 | if (typeto) { | |
1850 | Perl_croak(aTHX_ "%s: illegal mapping '%s'", | |
1851 | typestr, l); | |
1852 | } | |
1853 | } | |
1854 | } | |
711a919c TS |
1855 | else |
1856 | val = 0; /* bits == 1, then val should be ignored */ | |
979f2922 TS |
1857 | } |
1858 | else { | |
1859 | max = min; | |
1860 | if (octets) { | |
1861 | val = 0; | |
1862 | if (typeto) { | |
1863 | Perl_croak(aTHX_ "%s: illegal mapping '%s'", typestr, l); | |
1864 | } | |
1865 | } | |
711a919c TS |
1866 | else |
1867 | val = 0; /* bits == 1, then val should be ignored */ | |
979f2922 TS |
1868 | } |
1869 | ||
1870 | if (nl) | |
1871 | l = nl + 1; | |
1872 | else | |
1873 | l = lend; | |
1874 | ||
1875 | if (max < start) | |
1876 | continue; | |
1877 | ||
1878 | if (octets) { | |
35da51f7 | 1879 | UV key; |
979f2922 TS |
1880 | if (min < start) { |
1881 | if (!none || val < none) { | |
1882 | val += start - min; | |
1883 | } | |
1884 | min = start; | |
1885 | } | |
1886 | for (key = min; key <= max; key++) { | |
1887 | STRLEN offset; | |
1888 | if (key >= end) | |
1889 | goto go_out_list; | |
1890 | /* offset must be non-negative (start <= min <= key < end) */ | |
1891 | offset = octets * (key - start); | |
1892 | if (bits == 8) | |
1893 | s[offset] = (U8)(val & 0xff); | |
1894 | else if (bits == 16) { | |
1895 | s[offset ] = (U8)((val >> 8) & 0xff); | |
1896 | s[offset + 1] = (U8)( val & 0xff); | |
1897 | } | |
1898 | else if (bits == 32) { | |
1899 | s[offset ] = (U8)((val >> 24) & 0xff); | |
1900 | s[offset + 1] = (U8)((val >> 16) & 0xff); | |
1901 | s[offset + 2] = (U8)((val >> 8) & 0xff); | |
1902 | s[offset + 3] = (U8)( val & 0xff); | |
1903 | } | |
1904 | ||
1905 | if (!none || val < none) | |
1906 | ++val; | |
1907 | } | |
1908 | } | |
711a919c | 1909 | else { /* bits == 1, then val should be ignored */ |
35da51f7 | 1910 | UV key; |
979f2922 TS |
1911 | if (min < start) |
1912 | min = start; | |
1913 | for (key = min; key <= max; key++) { | |
0bd48802 | 1914 | const STRLEN offset = (STRLEN)(key - start); |
979f2922 TS |
1915 | if (key >= end) |
1916 | goto go_out_list; | |
1917 | s[offset >> 3] |= 1 << (offset & 7); | |
1918 | } | |
1919 | } | |
1920 | } /* while */ | |
1921 | go_out_list: | |
1922 | ||
1923 | /* read $swash->{EXTRAS} */ | |
1924 | x = (U8*)SvPV(*extssvp, xcur); | |
1925 | xend = x + xcur; | |
1926 | while (x < xend) { | |
1927 | STRLEN namelen; | |
1928 | U8 *namestr; | |
1929 | SV** othersvp; | |
1930 | HV* otherhv; | |
1931 | STRLEN otherbits; | |
1932 | SV **otherbitssvp, *other; | |
711a919c | 1933 | U8 *s, *o, *nl; |
979f2922 TS |
1934 | STRLEN slen, olen; |
1935 | ||
35da51f7 | 1936 | const U8 opc = *x++; |
979f2922 TS |
1937 | if (opc == '\n') |
1938 | continue; | |
1939 | ||
1940 | nl = (U8*)memchr(x, '\n', xend - x); | |
1941 | ||
1942 | if (opc != '-' && opc != '+' && opc != '!' && opc != '&') { | |
1943 | if (nl) { | |
1944 | x = nl + 1; /* 1 is length of "\n" */ | |
1945 | continue; | |
1946 | } | |
1947 | else { | |
1948 | x = xend; /* to EXTRAS' end at which \n is not found */ | |
1949 | break; | |
1950 | } | |
1951 | } | |
1952 | ||
1953 | namestr = x; | |
1954 | if (nl) { | |
1955 | namelen = nl - namestr; | |
1956 | x = nl + 1; | |
1957 | } | |
1958 | else { | |
1959 | namelen = xend - namestr; | |
1960 | x = xend; | |
1961 | } | |
1962 | ||
1963 | othersvp = hv_fetch(hv, (char *)namestr, namelen, FALSE); | |
660a4616 | 1964 | otherhv = (HV*)SvRV(*othersvp); |
017a3ce5 | 1965 | otherbitssvp = hv_fetchs(otherhv, "BITS", FALSE); |
979f2922 TS |
1966 | otherbits = (STRLEN)SvUV(*otherbitssvp); |
1967 | if (bits < otherbits) | |
660a4616 | 1968 | Perl_croak(aTHX_ "panic: swash_get found swatch size mismatch"); |
979f2922 TS |
1969 | |
1970 | /* The "other" swatch must be destroyed after. */ | |
1971 | other = swash_get(*othersvp, start, span); | |
1972 | o = (U8*)SvPV(other, olen); | |
1973 | ||
1974 | if (!olen) | |
660a4616 | 1975 | Perl_croak(aTHX_ "panic: swash_get got improper swatch"); |
979f2922 TS |
1976 | |
1977 | s = (U8*)SvPV(swatch, slen); | |
1978 | if (bits == 1 && otherbits == 1) { | |
1979 | if (slen != olen) | |
660a4616 | 1980 | Perl_croak(aTHX_ "panic: swash_get found swatch length mismatch"); |
979f2922 TS |
1981 | |
1982 | switch (opc) { | |
1983 | case '+': | |
1984 | while (slen--) | |
1985 | *s++ |= *o++; | |
1986 | break; | |
1987 | case '!': | |
1988 | while (slen--) | |
1989 | *s++ |= ~*o++; | |
1990 | break; | |
1991 | case '-': | |
1992 | while (slen--) | |
1993 | *s++ &= ~*o++; | |
1994 | break; | |
1995 | case '&': | |
1996 | while (slen--) | |
1997 | *s++ &= *o++; | |
1998 | break; | |
1999 | default: | |
2000 | break; | |
2001 | } | |
2002 | } | |
711a919c | 2003 | else { |
979f2922 TS |
2004 | STRLEN otheroctets = otherbits >> 3; |
2005 | STRLEN offset = 0; | |
35da51f7 | 2006 | U8* const send = s + slen; |
979f2922 TS |
2007 | |
2008 | while (s < send) { | |
2009 | UV otherval = 0; | |
2010 | ||
2011 | if (otherbits == 1) { | |
2012 | otherval = (o[offset >> 3] >> (offset & 7)) & 1; | |
2013 | ++offset; | |
2014 | } | |
2015 | else { | |
2016 | STRLEN vlen = otheroctets; | |
2017 | otherval = *o++; | |
2018 | while (--vlen) { | |
2019 | otherval <<= 8; | |
2020 | otherval |= *o++; | |
2021 | } | |
2022 | } | |
2023 | ||
711a919c | 2024 | if (opc == '+' && otherval) |
6f207bd3 | 2025 | NOOP; /* replace with otherval */ |
979f2922 TS |
2026 | else if (opc == '!' && !otherval) |
2027 | otherval = 1; | |
2028 | else if (opc == '-' && otherval) | |
2029 | otherval = 0; | |
2030 | else if (opc == '&' && !otherval) | |
2031 | otherval = 0; | |
2032 | else { | |
711a919c | 2033 | s += octets; /* no replacement */ |
979f2922 TS |
2034 | continue; |
2035 | } | |
2036 | ||
2037 | if (bits == 8) | |
2038 | *s++ = (U8)( otherval & 0xff); | |
2039 | else if (bits == 16) { | |
2040 | *s++ = (U8)((otherval >> 8) & 0xff); | |
2041 | *s++ = (U8)( otherval & 0xff); | |
2042 | } | |
2043 | else if (bits == 32) { | |
2044 | *s++ = (U8)((otherval >> 24) & 0xff); | |
2045 | *s++ = (U8)((otherval >> 16) & 0xff); | |
2046 | *s++ = (U8)((otherval >> 8) & 0xff); | |
2047 | *s++ = (U8)( otherval & 0xff); | |
2048 | } | |
2049 | } | |
2050 | } | |
2051 | sv_free(other); /* through with it! */ | |
2052 | } /* while */ | |
2053 | return swatch; | |
2054 | } | |
2055 | ||
0f830e0b NC |
2056 | /* |
2057 | =for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv | |
2058 | ||
2059 | Adds the UTF-8 representation of the Native codepoint C<uv> to the end | |
2060 | of the string C<d>; C<d> should be have at least C<UTF8_MAXBYTES+1> free | |
2061 | bytes available. The return value is the pointer to the byte after the | |
2062 | end of the new character. In other words, | |
2063 | ||
2064 | d = uvchr_to_utf8(d, uv); | |
2065 | ||
2066 | is the recommended wide native character-aware way of saying | |
2067 | ||
2068 | *(d++) = uv; | |
2069 | ||
2070 | =cut | |
2071 | */ | |
2072 | ||
2073 | /* On ASCII machines this is normally a macro but we want a | |
2074 | real function in case XS code wants it | |
2075 | */ | |
0f830e0b NC |
2076 | U8 * |
2077 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) | |
2078 | { | |
2079 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), 0); | |
2080 | } | |
2081 | ||
b851fbc1 JH |
2082 | U8 * |
2083 | Perl_uvchr_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags) | |
2084 | { | |
2085 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), flags); | |
2086 | } | |
2b9d42f0 NIS |
2087 | |
2088 | /* | |
0f830e0b NC |
2089 | =for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32 |
2090 | flags | |
2091 | ||
2092 | Returns the native character value of the first character in the string | |
2093 | C<s> | |
2094 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the | |
2095 | length, in bytes, of that character. | |
2096 | ||
2097 | Allows length and flags to be passed to low level routine. | |
2098 | ||
2099 | =cut | |
2100 | */ | |
2101 | /* On ASCII machines this is normally a macro but we want | |
2102 | a real function in case XS code wants it | |
2103 | */ | |
0f830e0b NC |
2104 | UV |
2105 | Perl_utf8n_to_uvchr(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, | |
2106 | U32 flags) | |
2107 | { | |
2108 | const UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); | |
2109 | return UNI_TO_NATIVE(uv); | |
2110 | } | |
2111 | ||
2112 | /* | |
d2cc3551 JH |
2113 | =for apidoc A|char *|pv_uni_display|SV *dsv|U8 *spv|STRLEN len|STRLEN pvlim|UV flags |
2114 | ||
2115 | Build to the scalar dsv a displayable version of the string spv, | |
2116 | length len, the displayable version being at most pvlim bytes long | |
2117 | (if longer, the rest is truncated and "..." will be appended). | |
0a2ef054 | 2118 | |
9e55ce06 | 2119 | The flags argument can have UNI_DISPLAY_ISPRINT set to display |
00e86452 | 2120 | isPRINT()able characters as themselves, UNI_DISPLAY_BACKSLASH |
0a2ef054 JH |
2121 | to display the \\[nrfta\\] as the backslashed versions (like '\n') |
2122 | (UNI_DISPLAY_BACKSLASH is preferred over UNI_DISPLAY_ISPRINT for \\). | |
2123 | UNI_DISPLAY_QQ (and its alias UNI_DISPLAY_REGEX) have both | |
2124 | UNI_DISPLAY_BACKSLASH and UNI_DISPLAY_ISPRINT turned on. | |
2125 | ||
d2cc3551 JH |
2126 | The pointer to the PV of the dsv is returned. |
2127 | ||
2128 | =cut */ | |
e6b2e755 | 2129 | char * |
e1ec3a88 | 2130 | Perl_pv_uni_display(pTHX_ SV *dsv, const U8 *spv, STRLEN len, STRLEN pvlim, UV flags) |
e6b2e755 JH |
2131 | { |
2132 | int truncated = 0; | |
e1ec3a88 | 2133 | const char *s, *e; |
e6b2e755 JH |
2134 | |
2135 | sv_setpvn(dsv, "", 0); | |
e1ec3a88 | 2136 | for (s = (const char *)spv, e = s + len; s < e; s += UTF8SKIP(s)) { |
e6b2e755 | 2137 | UV u; |
a49f32c6 NC |
2138 | /* This serves double duty as a flag and a character to print after |
2139 | a \ when flags & UNI_DISPLAY_BACKSLASH is true. | |
2140 | */ | |
2141 | char ok = 0; | |
c728cb41 | 2142 | |
e6b2e755 JH |
2143 | if (pvlim && SvCUR(dsv) >= pvlim) { |
2144 | truncated++; | |
2145 | break; | |
2146 | } | |
2147 | u = utf8_to_uvchr((U8*)s, 0); | |
c728cb41 | 2148 | if (u < 256) { |
a3b680e6 | 2149 | const unsigned char c = (unsigned char)u & 0xFF; |
0bd48802 | 2150 | if (flags & UNI_DISPLAY_BACKSLASH) { |
a49f32c6 | 2151 | switch (c) { |
c728cb41 | 2152 | case '\n': |
a49f32c6 | 2153 | ok = 'n'; break; |
c728cb41 | 2154 | case '\r': |
a49f32c6 | 2155 | ok = 'r'; break; |
c728cb41 | 2156 | case '\t': |
a49f32c6 | 2157 | ok = 't'; break; |
c728cb41 | 2158 | case '\f': |
a49f32c6 | 2159 | ok = 'f'; break; |
c728cb41 | 2160 | case '\a': |
a49f32c6 | 2161 | ok = 'a'; break; |
c728cb41 | 2162 | case '\\': |
a49f32c6 | 2163 | ok = '\\'; break; |
c728cb41 JH |
2164 | default: break; |
2165 | } | |
a49f32c6 NC |
2166 | if (ok) { |
2167 | Perl_sv_catpvf(aTHX_ dsv, "\\%c", ok); | |
2168 | } | |
c728cb41 | 2169 | } |
00e86452 | 2170 | /* isPRINT() is the locale-blind version. */ |
a49f32c6 NC |
2171 | if (!ok && (flags & UNI_DISPLAY_ISPRINT) && isPRINT(c)) { |
2172 | Perl_sv_catpvf(aTHX_ dsv, "%c", c); | |
2173 | ok = 1; | |
0a2ef054 | 2174 | } |
c728cb41 JH |
2175 | } |
2176 | if (!ok) | |
9e55ce06 | 2177 | Perl_sv_catpvf(aTHX_ dsv, "\\x{%"UVxf"}", u); |
e6b2e755 JH |
2178 | } |
2179 | if (truncated) | |
396482e1 | 2180 | sv_catpvs(dsv, "..."); |
e6b2e755 JH |
2181 | |
2182 | return SvPVX(dsv); | |
2183 | } | |
2b9d42f0 | 2184 | |
d2cc3551 JH |
2185 | /* |
2186 | =for apidoc A|char *|sv_uni_display|SV *dsv|SV *ssv|STRLEN pvlim|UV flags | |
2187 | ||
2188 | Build to the scalar dsv a displayable version of the scalar sv, | |
0a2ef054 | 2189 | the displayable version being at most pvlim bytes long |
d2cc3551 | 2190 | (if longer, the rest is truncated and "..." will be appended). |
0a2ef054 JH |
2191 | |
2192 | The flags argument is as in pv_uni_display(). | |
2193 | ||
d2cc3551 JH |
2194 | The pointer to the PV of the dsv is returned. |
2195 | ||
d4c19fe8 AL |
2196 | =cut |
2197 | */ | |
e6b2e755 JH |
2198 | char * |
2199 | Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags) | |
2200 | { | |
cfd0369c NC |
2201 | return Perl_pv_uni_display(aTHX_ dsv, (const U8*)SvPVX_const(ssv), |
2202 | SvCUR(ssv), pvlim, flags); | |
701a277b JH |
2203 | } |
2204 | ||
d2cc3551 | 2205 | /* |
d07ddd77 | 2206 | =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 |
2207 | |
2208 | Return true if the strings s1 and s2 differ case-insensitively, false | |
2209 | if not (if they are equal case-insensitively). If u1 is true, the | |
2210 | string s1 is assumed to be in UTF-8-encoded Unicode. If u2 is true, | |
d07ddd77 JH |
2211 | the string s2 is assumed to be in UTF-8-encoded Unicode. If u1 or u2 |
2212 | are false, the respective string is assumed to be in native 8-bit | |
2213 | encoding. | |
2214 | ||
2215 | If the pe1 and pe2 are non-NULL, the scanning pointers will be copied | |
2216 | in there (they will point at the beginning of the I<next> character). | |
2217 | If the pointers behind pe1 or pe2 are non-NULL, they are the end | |
2218 | pointers beyond which scanning will not continue under any | |
4cdaeff7 | 2219 | circumstances. If the byte lengths l1 and l2 are non-zero, s1+l1 and |
d07ddd77 JH |
2220 | s2+l2 will be used as goal end pointers that will also stop the scan, |
2221 | and which qualify towards defining a successful match: all the scans | |
2222 | that define an explicit length must reach their goal pointers for | |
2223 | a match to succeed). | |
d2cc3551 JH |
2224 | |
2225 | For case-insensitiveness, the "casefolding" of Unicode is used | |
2226 | instead of upper/lowercasing both the characters, see | |
2227 | http://www.unicode.org/unicode/reports/tr21/ (Case Mappings). | |
2228 | ||
2229 | =cut */ | |
701a277b | 2230 | I32 |
d07ddd77 | 2231 | 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 | 2232 | { |
97aff369 | 2233 | dVAR; |
e1ec3a88 AL |
2234 | register const U8 *p1 = (const U8*)s1; |
2235 | register const U8 *p2 = (const U8*)s2; | |
cbbf8932 | 2236 | register const U8 *f1 = NULL; |
2f73348c | 2237 | register const U8 *f2 = NULL; |
cbbf8932 AL |
2238 | register U8 *e1 = NULL; |
2239 | register U8 *q1 = NULL; | |
2240 | register U8 *e2 = NULL; | |
2241 | register U8 *q2 = NULL; | |
d07ddd77 | 2242 | STRLEN n1 = 0, n2 = 0; |
89ebb4a3 JH |
2243 | U8 foldbuf1[UTF8_MAXBYTES_CASE+1]; |
2244 | U8 foldbuf2[UTF8_MAXBYTES_CASE+1]; | |
d7f013c8 JH |
2245 | U8 natbuf[1+1]; |
2246 | STRLEN foldlen1, foldlen2; | |
d07ddd77 | 2247 | bool match; |
332ddc25 | 2248 | |
d07ddd77 JH |
2249 | if (pe1) |
2250 | e1 = *(U8**)pe1; | |
e1ec3a88 AL |
2251 | if (e1 == 0 || (l1 && l1 < (UV)(e1 - (const U8*)s1))) |
2252 | f1 = (const U8*)s1 + l1; | |
d07ddd77 JH |
2253 | if (pe2) |
2254 | e2 = *(U8**)pe2; | |
e1ec3a88 AL |
2255 | if (e2 == 0 || (l2 && l2 < (UV)(e2 - (const U8*)s2))) |
2256 | f2 = (const U8*)s2 + l2; | |
d07ddd77 JH |
2257 | |
2258 | if ((e1 == 0 && f1 == 0) || (e2 == 0 && f2 == 0) || (f1 == 0 && f2 == 0)) | |
2259 | return 1; /* mismatch; possible infinite loop or false positive */ | |
2260 | ||
a6872d42 JH |
2261 | if (!u1 || !u2) |
2262 | natbuf[1] = 0; /* Need to terminate the buffer. */ | |
2263 | ||
d07ddd77 JH |
2264 | while ((e1 == 0 || p1 < e1) && |
2265 | (f1 == 0 || p1 < f1) && | |
2266 | (e2 == 0 || p2 < e2) && | |
2267 | (f2 == 0 || p2 < f2)) { | |
2268 | if (n1 == 0) { | |
d7f013c8 JH |
2269 | if (u1) |
2270 | to_utf8_fold(p1, foldbuf1, &foldlen1); | |
2271 | else { | |
809e8e66 | 2272 | uvuni_to_utf8(natbuf, (UV) NATIVE_TO_UNI(((UV)*p1))); |
d7f013c8 JH |
2273 | to_utf8_fold(natbuf, foldbuf1, &foldlen1); |
2274 | } | |
2275 | q1 = foldbuf1; | |
d07ddd77 | 2276 | n1 = foldlen1; |
332ddc25 | 2277 | } |
d07ddd77 | 2278 | if (n2 == 0) { |
d7f013c8 JH |
2279 | if (u2) |
2280 | to_utf8_fold(p2, foldbuf2, &foldlen2); | |
2281 | else { | |
809e8e66 | 2282 | uvuni_to_utf8(natbuf, (UV) NATIVE_TO_UNI(((UV)*p2))); |
d7f013c8 JH |
2283 | to_utf8_fold(natbuf, foldbuf2, &foldlen2); |
2284 | } | |
2285 | q2 = foldbuf2; | |
d07ddd77 | 2286 | n2 = foldlen2; |
332ddc25 | 2287 | } |
d07ddd77 JH |
2288 | while (n1 && n2) { |
2289 | if ( UTF8SKIP(q1) != UTF8SKIP(q2) || | |
2290 | (UTF8SKIP(q1) == 1 && *q1 != *q2) || | |
2291 | memNE((char*)q1, (char*)q2, UTF8SKIP(q1)) ) | |
d7f013c8 | 2292 | return 1; /* mismatch */ |
d07ddd77 | 2293 | n1 -= UTF8SKIP(q1); |
d7f013c8 | 2294 | q1 += UTF8SKIP(q1); |
d07ddd77 | 2295 | n2 -= UTF8SKIP(q2); |
d7f013c8 | 2296 | q2 += UTF8SKIP(q2); |
701a277b | 2297 | } |
d07ddd77 | 2298 | if (n1 == 0) |
d7f013c8 | 2299 | p1 += u1 ? UTF8SKIP(p1) : 1; |
d07ddd77 | 2300 | if (n2 == 0) |
d7f013c8 JH |
2301 | p2 += u2 ? UTF8SKIP(p2) : 1; |
2302 | ||
d2cc3551 | 2303 | } |
5469e704 | 2304 | |
d07ddd77 JH |
2305 | /* A match is defined by all the scans that specified |
2306 | * an explicit length reaching their final goals. */ | |
2307 | match = (f1 == 0 || p1 == f1) && (f2 == 0 || p2 == f2); | |
5469e704 JH |
2308 | |
2309 | if (match) { | |
d07ddd77 JH |
2310 | if (pe1) |
2311 | *pe1 = (char*)p1; | |
2312 | if (pe2) | |
2313 | *pe2 = (char*)p2; | |
5469e704 JH |
2314 | } |
2315 | ||
2316 | return match ? 0 : 1; /* 0 match, 1 mismatch */ | |
e6b2e755 | 2317 | } |
701a277b | 2318 | |
a49f32c6 NC |
2319 | /* |
2320 | * Local variables: | |
2321 | * c-indentation-style: bsd | |
2322 | * c-basic-offset: 4 | |
2323 | * indent-tabs-mode: t | |
2324 | * End: | |
2325 | * | |
37442d52 RGS |
2326 | * ex: set ts=8 sts=4 sw=4 noet: |
2327 | */ |