1 /* -*- mode: c; c-basic-offset: 2; tab-width: 2; indent-tabs-mode: nil -*- */
3 * Copyright (c) 2015 Steven G. Johnson, Jiahao Chen, Peter Colberg, Tony Kelman, Scott P. Jones, and other contributors.
4 * Copyright (c) 2009 Public Software Group e. V., Berlin, Germany
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
26 * This library contains derived data from a modified version of the
29 * The original data files are available at
30 * http://www.unicode.org/Public/UNIDATA/
32 * Please notice the copyright statement in the file "utf8proc_data.c".
37 * File name: utf8proc.c
40 * Implementation of libutf8proc.
44 #include "utf8proc_internal.h"
45 #include "utf8proc_data.c"
48 UTF8PROC_DLLEXPORT const utf8proc_int8_t utf8proc_utf8class[256] = {
49 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
50 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
51 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
52 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
53 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
54 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
55 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
56 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
57 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
58 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
59 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
60 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
61 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
62 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
63 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
64 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0 };
66 #define UTF8PROC_HANGUL_SBASE 0xAC00
67 #define UTF8PROC_HANGUL_LBASE 0x1100
68 #define UTF8PROC_HANGUL_VBASE 0x1161
69 #define UTF8PROC_HANGUL_TBASE 0x11A7
70 #define UTF8PROC_HANGUL_LCOUNT 19
71 #define UTF8PROC_HANGUL_VCOUNT 21
72 #define UTF8PROC_HANGUL_TCOUNT 28
73 #define UTF8PROC_HANGUL_NCOUNT 588
74 #define UTF8PROC_HANGUL_SCOUNT 11172
75 /* END is exclusive */
76 #define UTF8PROC_HANGUL_L_START 0x1100
77 #define UTF8PROC_HANGUL_L_END 0x115A
78 #define UTF8PROC_HANGUL_L_FILLER 0x115F
79 #define UTF8PROC_HANGUL_V_START 0x1160
80 #define UTF8PROC_HANGUL_V_END 0x11A3
81 #define UTF8PROC_HANGUL_T_START 0x11A8
82 #define UTF8PROC_HANGUL_T_END 0x11FA
83 #define UTF8PROC_HANGUL_S_START 0xAC00
84 #define UTF8PROC_HANGUL_S_END 0xD7A4
86 /* Should follow semantic-versioning rules (semver.org) based on API
87 compatibility. (Note that the shared-library version number will
88 be different, being based on ABI compatibility.): */
89 #define STRINGIZEx(x) #x
90 #define STRINGIZE(x) STRINGIZEx(x)
91 UTF8PROC_DLLEXPORT const char *utf8proc_version(void) {
92 return STRINGIZE(UTF8PROC_VERSION_MAJOR) "." STRINGIZE(UTF8PROC_VERSION_MINOR) "." STRINGIZE(UTF8PROC_VERSION_PATCH) "";
95 UTF8PROC_DLLEXPORT const char *utf8proc_errmsg(utf8proc_ssize_t errcode) {
97 case UTF8PROC_ERROR_NOMEM:
98 return "Memory for processing UTF-8 data could not be allocated.";
99 case UTF8PROC_ERROR_OVERFLOW:
100 return "UTF-8 string is too long to be processed.";
101 case UTF8PROC_ERROR_INVALIDUTF8:
102 return "Invalid UTF-8 string";
103 case UTF8PROC_ERROR_NOTASSIGNED:
104 return "Unassigned Unicode code point found in UTF-8 string.";
105 case UTF8PROC_ERROR_INVALIDOPTS:
106 return "Invalid options for UTF-8 processing chosen.";
108 return "An unknown error occurred while processing UTF-8 data.";
112 #define utf_cont(ch) (((ch) & 0xc0) == 0x80)
113 UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_iterate(
114 const utf8proc_uint8_t *str, utf8proc_ssize_t strlen, utf8proc_int32_t *dst
116 utf8proc_uint32_t uc;
117 const utf8proc_uint8_t *end;
120 if (!strlen) return 0;
121 end = str + ((strlen < 0) ? 4 : strlen);
127 /* Must be between 0xc2 and 0xf4 inclusive to be valid */
128 if ((uc - 0xc2) > (0xf4-0xc2)) return UTF8PROC_ERROR_INVALIDUTF8;
129 if (uc < 0xe0) { /* 2-byte sequence */
130 /* Must have valid continuation character */
131 if (str >= end || !utf_cont(*str)) return UTF8PROC_ERROR_INVALIDUTF8;
132 *dst = ((uc & 0x1f)<<6) | (*str & 0x3f);
135 if (uc < 0xf0) { /* 3-byte sequence */
136 if ((str + 1 >= end) || !utf_cont(*str) || !utf_cont(str[1]))
137 return UTF8PROC_ERROR_INVALIDUTF8;
138 /* Check for surrogate chars */
139 if (uc == 0xed && *str > 0x9f)
140 return UTF8PROC_ERROR_INVALIDUTF8;
141 uc = ((uc & 0xf)<<12) | ((*str & 0x3f)<<6) | (str[1] & 0x3f);
143 return UTF8PROC_ERROR_INVALIDUTF8;
148 Must have 3 valid continuation characters */
149 if ((str + 2 >= end) || !utf_cont(*str) || !utf_cont(str[1]) || !utf_cont(str[2]))
150 return UTF8PROC_ERROR_INVALIDUTF8;
151 /* Make sure in correct range (0x10000 - 0x10ffff) */
153 if (*str < 0x90) return UTF8PROC_ERROR_INVALIDUTF8;
154 } else if (uc == 0xf4) {
155 if (*str > 0x8f) return UTF8PROC_ERROR_INVALIDUTF8;
157 *dst = ((uc & 7)<<18) | ((*str & 0x3f)<<12) | ((str[1] & 0x3f)<<6) | (str[2] & 0x3f);
161 UTF8PROC_DLLEXPORT utf8proc_bool utf8proc_codepoint_valid(utf8proc_int32_t uc) {
162 return (((utf8proc_uint32_t)uc)-0xd800 > 0x07ff) && ((utf8proc_uint32_t)uc < 0x110000);
165 UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_encode_char(utf8proc_int32_t uc, utf8proc_uint8_t *dst) {
168 } else if (uc < 0x80) {
169 dst[0] = (utf8proc_uint8_t) uc;
171 } else if (uc < 0x800) {
172 dst[0] = (utf8proc_uint8_t)(0xC0 + (uc >> 6));
173 dst[1] = (utf8proc_uint8_t)(0x80 + (uc & 0x3F));
175 /* Note: we allow encoding 0xd800-0xdfff here, so as not to change
176 the API, however, these are actually invalid in UTF-8 */
177 } else if (uc < 0x10000) {
178 dst[0] = (utf8proc_uint8_t)(0xE0 + (uc >> 12));
179 dst[1] = (utf8proc_uint8_t)(0x80 + ((uc >> 6) & 0x3F));
180 dst[2] = (utf8proc_uint8_t)(0x80 + (uc & 0x3F));
182 } else if (uc < 0x110000) {
183 dst[0] = (utf8proc_uint8_t)(0xF0 + (uc >> 18));
184 dst[1] = (utf8proc_uint8_t)(0x80 + ((uc >> 12) & 0x3F));
185 dst[2] = (utf8proc_uint8_t)(0x80 + ((uc >> 6) & 0x3F));
186 dst[3] = (utf8proc_uint8_t)(0x80 + (uc & 0x3F));
191 /* internal "unsafe" version that does not check whether uc is in range */
192 static utf8proc_ssize_t unsafe_encode_char(utf8proc_int32_t uc, utf8proc_uint8_t *dst) {
195 } else if (uc < 0x80) {
196 dst[0] = (utf8proc_uint8_t)uc;
198 } else if (uc < 0x800) {
199 dst[0] = (utf8proc_uint8_t)(0xC0 + (uc >> 6));
200 dst[1] = (utf8proc_uint8_t)(0x80 + (uc & 0x3F));
202 } else if (uc == 0xFFFF) {
203 dst[0] = (utf8proc_uint8_t)0xFF;
205 } else if (uc == 0xFFFE) {
206 dst[0] = (utf8proc_uint8_t)0xFE;
208 } else if (uc < 0x10000) {
209 dst[0] = (utf8proc_uint8_t)(0xE0 + (uc >> 12));
210 dst[1] = (utf8proc_uint8_t)(0x80 + ((uc >> 6) & 0x3F));
211 dst[2] = (utf8proc_uint8_t)(0x80 + (uc & 0x3F));
213 } else if (uc < 0x110000) {
214 dst[0] = (utf8proc_uint8_t)(0xF0 + (uc >> 18));
215 dst[1] = (utf8proc_uint8_t)(0x80 + ((uc >> 12) & 0x3F));
216 dst[2] = (utf8proc_uint8_t)(0x80 + ((uc >> 6) & 0x3F));
217 dst[3] = (utf8proc_uint8_t)(0x80 + (uc & 0x3F));
222 /* internal "unsafe" version that does not check whether uc is in range */
223 static const utf8proc_property_t *unsafe_get_property(utf8proc_int32_t uc) {
224 /* ASSERT: uc >= 0 && uc < 0x110000 */
225 return utf8proc_properties + (
226 utf8proc_stage2table[
227 utf8proc_stage1table[uc >> 8] + (uc & 0xFF)
232 UTF8PROC_DLLEXPORT const utf8proc_property_t *utf8proc_get_property(utf8proc_int32_t uc) {
233 return uc < 0 || uc >= 0x110000 ? utf8proc_properties : unsafe_get_property(uc);
236 /* return whether there is a grapheme break between boundclasses lbc and tbc
237 (according to the definition of extended grapheme clusters)
239 Rule numbering refers to TR29 Version 29 (Unicode 9.0.0):
240 http://www.unicode.org/reports/tr29/tr29-29.html
243 Please note that evaluation of GB10 (grapheme breaks between emoji zwj sequences)
244 and GB 12/13 (regional indicator code points) require knowledge of previous characters
245 and are thus not handled by this function. This may result in an incorrect break before
246 an E_Modifier class codepoint and an incorrectly missing break between two
247 REGIONAL_INDICATOR class code points if such support does not exist in the caller.
249 See the special support in grapheme_break_extended, for required bookkeeping by the caller.
251 static utf8proc_bool grapheme_break_simple(int lbc, int tbc) {
253 (lbc == UTF8PROC_BOUNDCLASS_START) ? true : /* GB1 */
254 (lbc == UTF8PROC_BOUNDCLASS_CR && /* GB3 */
255 tbc == UTF8PROC_BOUNDCLASS_LF) ? false : /* --- */
256 (lbc >= UTF8PROC_BOUNDCLASS_CR && lbc <= UTF8PROC_BOUNDCLASS_CONTROL) ? true : /* GB4 */
257 (tbc >= UTF8PROC_BOUNDCLASS_CR && tbc <= UTF8PROC_BOUNDCLASS_CONTROL) ? true : /* GB5 */
258 (lbc == UTF8PROC_BOUNDCLASS_L && /* GB6 */
259 (tbc == UTF8PROC_BOUNDCLASS_L || /* --- */
260 tbc == UTF8PROC_BOUNDCLASS_V || /* --- */
261 tbc == UTF8PROC_BOUNDCLASS_LV || /* --- */
262 tbc == UTF8PROC_BOUNDCLASS_LVT)) ? false : /* --- */
263 ((lbc == UTF8PROC_BOUNDCLASS_LV || /* GB7 */
264 lbc == UTF8PROC_BOUNDCLASS_V) && /* --- */
265 (tbc == UTF8PROC_BOUNDCLASS_V || /* --- */
266 tbc == UTF8PROC_BOUNDCLASS_T)) ? false : /* --- */
267 ((lbc == UTF8PROC_BOUNDCLASS_LVT || /* GB8 */
268 lbc == UTF8PROC_BOUNDCLASS_T) && /* --- */
269 tbc == UTF8PROC_BOUNDCLASS_T) ? false : /* --- */
270 (tbc == UTF8PROC_BOUNDCLASS_EXTEND || /* GB9 */
271 tbc == UTF8PROC_BOUNDCLASS_ZWJ || /* --- */
272 tbc == UTF8PROC_BOUNDCLASS_SPACINGMARK || /* GB9a */
273 lbc == UTF8PROC_BOUNDCLASS_PREPEND) ? false : /* GB9b */
274 ((lbc == UTF8PROC_BOUNDCLASS_E_BASE || /* GB10 (requires additional handling below) */
275 lbc == UTF8PROC_BOUNDCLASS_E_BASE_GAZ) && /* ---- */
276 tbc == UTF8PROC_BOUNDCLASS_E_MODIFIER) ? false : /* ---- */
277 (lbc == UTF8PROC_BOUNDCLASS_ZWJ && /* GB11 */
278 (tbc == UTF8PROC_BOUNDCLASS_GLUE_AFTER_ZWJ || /* ---- */
279 tbc == UTF8PROC_BOUNDCLASS_E_BASE_GAZ)) ? false : /* ---- */
280 (lbc == UTF8PROC_BOUNDCLASS_REGIONAL_INDICATOR && /* GB12/13 (requires additional handling below) */
281 tbc == UTF8PROC_BOUNDCLASS_REGIONAL_INDICATOR) ? false : /* ---- */
285 static utf8proc_bool grapheme_break_extended(int lbc, int tbc, utf8proc_int32_t *state)
287 utf8proc_bool break_permitted;
288 int lbc_override = lbc;
289 if (state && *state != UTF8PROC_BOUNDCLASS_START)
290 lbc_override = *state;
291 break_permitted = grapheme_break_simple(lbc_override, tbc);
293 /* Special support for GB 12/13 made possible by GB999. After two RI
294 class codepoints we want to force a break. Do this by resetting the
295 second RI's bound class to UTF8PROC_BOUNDCLASS_OTHER, to force a break
296 after that character according to GB999 (unless of course such a break is
297 forbidden by a different rule such as GB9). */
298 if (*state == tbc && tbc == UTF8PROC_BOUNDCLASS_REGIONAL_INDICATOR)
299 *state = UTF8PROC_BOUNDCLASS_OTHER;
300 /* Special support for GB10. Fold any EXTEND codepoints into the previous
301 boundclass if we're dealing with an emoji base boundclass. */
302 else if ((*state == UTF8PROC_BOUNDCLASS_E_BASE ||
303 *state == UTF8PROC_BOUNDCLASS_E_BASE_GAZ) &&
304 tbc == UTF8PROC_BOUNDCLASS_EXTEND)
305 *state = UTF8PROC_BOUNDCLASS_E_BASE;
309 return break_permitted;
312 UTF8PROC_DLLEXPORT utf8proc_bool utf8proc_grapheme_break_stateful(
313 utf8proc_int32_t c1, utf8proc_int32_t c2, utf8proc_int32_t *state) {
315 return grapheme_break_extended(utf8proc_get_property(c1)->boundclass,
316 utf8proc_get_property(c2)->boundclass,
321 UTF8PROC_DLLEXPORT utf8proc_bool utf8proc_grapheme_break(
322 utf8proc_int32_t c1, utf8proc_int32_t c2) {
323 return utf8proc_grapheme_break_stateful(c1, c2, NULL);
326 static utf8proc_int32_t seqindex_decode_entry(const utf8proc_uint16_t **entry)
328 utf8proc_int32_t entry_cp = **entry;
329 if ((entry_cp & 0xF800) == 0xD800) {
331 entry_cp = ((entry_cp & 0x03FF) << 10) | (**entry & 0x03FF);
337 static utf8proc_int32_t seqindex_decode_index(const utf8proc_uint32_t seqindex)
339 const utf8proc_uint16_t *entry = &utf8proc_sequences[seqindex];
340 return seqindex_decode_entry(&entry);
343 static utf8proc_ssize_t seqindex_write_char_decomposed(utf8proc_uint16_t seqindex, utf8proc_int32_t *dst, utf8proc_ssize_t bufsize, utf8proc_option_t options, int *last_boundclass) {
344 utf8proc_ssize_t written = 0;
345 const utf8proc_uint16_t *entry = &utf8proc_sequences[seqindex & 0x1FFF];
346 int len = seqindex >> 13;
351 for (; len >= 0; entry++, len--) {
352 utf8proc_int32_t entry_cp = seqindex_decode_entry(&entry);
354 written += utf8proc_decompose_char(entry_cp, dst+written,
355 (bufsize > written) ? (bufsize - written) : 0, options,
357 if (written < 0) return UTF8PROC_ERROR_OVERFLOW;
362 UTF8PROC_DLLEXPORT utf8proc_int32_t utf8proc_tolower(utf8proc_int32_t c)
364 utf8proc_int32_t cl = utf8proc_get_property(c)->lowercase_seqindex;
365 return cl != UINT16_MAX ? seqindex_decode_index(cl) : c;
368 UTF8PROC_DLLEXPORT utf8proc_int32_t utf8proc_toupper(utf8proc_int32_t c)
370 utf8proc_int32_t cu = utf8proc_get_property(c)->uppercase_seqindex;
371 return cu != UINT16_MAX ? seqindex_decode_index(cu) : c;
374 UTF8PROC_DLLEXPORT utf8proc_int32_t utf8proc_totitle(utf8proc_int32_t c)
376 utf8proc_int32_t cu = utf8proc_get_property(c)->titlecase_seqindex;
377 return cu != UINT16_MAX ? seqindex_decode_index(cu) : c;
380 /* return a character width analogous to wcwidth (except portable and
381 hopefully less buggy than most system wcwidth functions). */
382 UTF8PROC_DLLEXPORT int utf8proc_charwidth(utf8proc_int32_t c) {
383 return utf8proc_get_property(c)->charwidth;
386 UTF8PROC_DLLEXPORT utf8proc_category_t utf8proc_category(utf8proc_int32_t c) {
387 return utf8proc_get_property(c)->category;
390 UTF8PROC_DLLEXPORT const char *utf8proc_category_string(utf8proc_int32_t c) {
391 static const char s[][3] = {"Cn","Lu","Ll","Lt","Lm","Lo","Mn","Mc","Me","Nd","Nl","No","Pc","Pd","Ps","Pe","Pi","Pf","Po","Sm","Sc","Sk","So","Zs","Zl","Zp","Cc","Cf","Cs","Co"};
392 return s[utf8proc_category(c)];
395 #define utf8proc_decompose_lump(replacement_uc) \
396 return utf8proc_decompose_char((replacement_uc), dst, bufsize, \
397 options & ~UTF8PROC_LUMP, last_boundclass)
399 UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_decompose_char(utf8proc_int32_t uc, utf8proc_int32_t *dst, utf8proc_ssize_t bufsize, utf8proc_option_t options, int *last_boundclass) {
400 const utf8proc_property_t *property;
401 utf8proc_propval_t category;
402 utf8proc_int32_t hangul_sindex;
403 if (uc < 0 || uc >= 0x110000) return UTF8PROC_ERROR_NOTASSIGNED;
404 property = unsafe_get_property(uc);
405 category = property->category;
406 hangul_sindex = uc - UTF8PROC_HANGUL_SBASE;
407 if (options & (UTF8PROC_COMPOSE|UTF8PROC_DECOMPOSE)) {
408 if (hangul_sindex >= 0 && hangul_sindex < UTF8PROC_HANGUL_SCOUNT) {
409 utf8proc_int32_t hangul_tindex;
411 dst[0] = UTF8PROC_HANGUL_LBASE +
412 hangul_sindex / UTF8PROC_HANGUL_NCOUNT;
413 if (bufsize >= 2) dst[1] = UTF8PROC_HANGUL_VBASE +
414 (hangul_sindex % UTF8PROC_HANGUL_NCOUNT) / UTF8PROC_HANGUL_TCOUNT;
416 hangul_tindex = hangul_sindex % UTF8PROC_HANGUL_TCOUNT;
417 if (!hangul_tindex) return 2;
418 if (bufsize >= 3) dst[2] = UTF8PROC_HANGUL_TBASE + hangul_tindex;
422 if (options & UTF8PROC_REJECTNA) {
423 if (!category) return UTF8PROC_ERROR_NOTASSIGNED;
425 if (options & UTF8PROC_IGNORE) {
426 if (property->ignorable) return 0;
428 if (options & UTF8PROC_LUMP) {
429 if (category == UTF8PROC_CATEGORY_ZS) utf8proc_decompose_lump(0x0020);
430 if (uc == 0x2018 || uc == 0x2019 || uc == 0x02BC || uc == 0x02C8)
431 utf8proc_decompose_lump(0x0027);
432 if (category == UTF8PROC_CATEGORY_PD || uc == 0x2212)
433 utf8proc_decompose_lump(0x002D);
434 if (uc == 0x2044 || uc == 0x2215) utf8proc_decompose_lump(0x002F);
435 if (uc == 0x2236) utf8proc_decompose_lump(0x003A);
436 if (uc == 0x2039 || uc == 0x2329 || uc == 0x3008)
437 utf8proc_decompose_lump(0x003C);
438 if (uc == 0x203A || uc == 0x232A || uc == 0x3009)
439 utf8proc_decompose_lump(0x003E);
440 if (uc == 0x2216) utf8proc_decompose_lump(0x005C);
441 if (uc == 0x02C4 || uc == 0x02C6 || uc == 0x2038 || uc == 0x2303)
442 utf8proc_decompose_lump(0x005E);
443 if (category == UTF8PROC_CATEGORY_PC || uc == 0x02CD)
444 utf8proc_decompose_lump(0x005F);
445 if (uc == 0x02CB) utf8proc_decompose_lump(0x0060);
446 if (uc == 0x2223) utf8proc_decompose_lump(0x007C);
447 if (uc == 0x223C) utf8proc_decompose_lump(0x007E);
448 if ((options & UTF8PROC_NLF2LS) && (options & UTF8PROC_NLF2PS)) {
449 if (category == UTF8PROC_CATEGORY_ZL ||
450 category == UTF8PROC_CATEGORY_ZP)
451 utf8proc_decompose_lump(0x000A);
454 if (options & UTF8PROC_STRIPMARK) {
455 if (category == UTF8PROC_CATEGORY_MN ||
456 category == UTF8PROC_CATEGORY_MC ||
457 category == UTF8PROC_CATEGORY_ME) return 0;
459 if (options & UTF8PROC_CASEFOLD) {
460 if (property->casefold_seqindex != UINT16_MAX) {
461 return seqindex_write_char_decomposed(property->casefold_seqindex, dst, bufsize, options, last_boundclass);
464 if (options & (UTF8PROC_COMPOSE|UTF8PROC_DECOMPOSE)) {
465 if (property->decomp_seqindex != UINT16_MAX &&
466 (!property->decomp_type || (options & UTF8PROC_COMPAT))) {
467 return seqindex_write_char_decomposed(property->decomp_seqindex, dst, bufsize, options, last_boundclass);
470 if (options & UTF8PROC_CHARBOUND) {
471 utf8proc_bool boundary;
472 int tbc = property->boundclass;
473 boundary = grapheme_break_extended(*last_boundclass, tbc, last_boundclass);
475 if (bufsize >= 1) dst[0] = 0xFFFF;
476 if (bufsize >= 2) dst[1] = uc;
480 if (bufsize >= 1) *dst = uc;
484 UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_decompose(
485 const utf8proc_uint8_t *str, utf8proc_ssize_t strlen,
486 utf8proc_int32_t *buffer, utf8proc_ssize_t bufsize, utf8proc_option_t options
488 return utf8proc_decompose_custom(str, strlen, buffer, bufsize, options, NULL, NULL);
491 UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_decompose_custom(
492 const utf8proc_uint8_t *str, utf8proc_ssize_t strlen,
493 utf8proc_int32_t *buffer, utf8proc_ssize_t bufsize, utf8proc_option_t options,
494 utf8proc_custom_func custom_func, void *custom_data
496 /* strlen will be ignored, if UTF8PROC_NULLTERM is set in options */
497 utf8proc_ssize_t wpos = 0;
498 if ((options & UTF8PROC_COMPOSE) && (options & UTF8PROC_DECOMPOSE))
499 return UTF8PROC_ERROR_INVALIDOPTS;
500 if ((options & UTF8PROC_STRIPMARK) &&
501 !(options & UTF8PROC_COMPOSE) && !(options & UTF8PROC_DECOMPOSE))
502 return UTF8PROC_ERROR_INVALIDOPTS;
505 utf8proc_ssize_t rpos = 0;
506 utf8proc_ssize_t decomp_result;
507 int boundclass = UTF8PROC_BOUNDCLASS_START;
509 if (options & UTF8PROC_NULLTERM) {
510 rpos += utf8proc_iterate(str + rpos, -1, &uc);
511 /* checking of return value is not necessary,
512 as 'uc' is < 0 in case of error */
513 if (uc < 0) return UTF8PROC_ERROR_INVALIDUTF8;
514 if (rpos < 0) return UTF8PROC_ERROR_OVERFLOW;
517 if (rpos >= strlen) break;
518 rpos += utf8proc_iterate(str + rpos, strlen - rpos, &uc);
519 if (uc < 0) return UTF8PROC_ERROR_INVALIDUTF8;
521 if (custom_func != NULL) {
522 uc = custom_func(uc, custom_data); /* user-specified custom mapping */
524 decomp_result = utf8proc_decompose_char(
525 uc, buffer + wpos, (bufsize > wpos) ? (bufsize - wpos) : 0, options,
528 if (decomp_result < 0) return decomp_result;
529 wpos += decomp_result;
530 /* prohibiting integer overflows due to too long strings: */
532 wpos > (utf8proc_ssize_t)(SSIZE_MAX/sizeof(utf8proc_int32_t)/2))
533 return UTF8PROC_ERROR_OVERFLOW;
536 if ((options & (UTF8PROC_COMPOSE|UTF8PROC_DECOMPOSE)) && bufsize >= wpos) {
537 utf8proc_ssize_t pos = 0;
538 while (pos < wpos-1) {
539 utf8proc_int32_t uc1, uc2;
540 const utf8proc_property_t *property1, *property2;
543 property1 = unsafe_get_property(uc1);
544 property2 = unsafe_get_property(uc2);
545 if (property1->combining_class > property2->combining_class &&
546 property2->combining_class > 0) {
549 if (pos > 0) pos--; else pos++;
558 UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_normalize_utf32(utf8proc_int32_t *buffer, utf8proc_ssize_t length, utf8proc_option_t options) {
559 /* UTF8PROC_NULLTERM option will be ignored, 'length' is never ignored */
560 if (options & (UTF8PROC_NLF2LS | UTF8PROC_NLF2PS | UTF8PROC_STRIPCC)) {
561 utf8proc_ssize_t rpos;
562 utf8proc_ssize_t wpos = 0;
564 for (rpos = 0; rpos < length; rpos++) {
566 if (uc == 0x000D && rpos < length-1 && buffer[rpos+1] == 0x000A) rpos++;
567 if (uc == 0x000A || uc == 0x000D || uc == 0x0085 ||
568 ((options & UTF8PROC_STRIPCC) && (uc == 0x000B || uc == 0x000C))) {
569 if (options & UTF8PROC_NLF2LS) {
570 if (options & UTF8PROC_NLF2PS) {
571 buffer[wpos++] = 0x000A;
573 buffer[wpos++] = 0x2028;
576 if (options & UTF8PROC_NLF2PS) {
577 buffer[wpos++] = 0x2029;
579 buffer[wpos++] = 0x0020;
582 } else if ((options & UTF8PROC_STRIPCC) &&
583 (uc < 0x0020 || (uc >= 0x007F && uc < 0x00A0))) {
584 if (uc == 0x0009) buffer[wpos++] = 0x0020;
591 if (options & UTF8PROC_COMPOSE) {
592 utf8proc_int32_t *starter = NULL;
593 utf8proc_int32_t current_char;
594 const utf8proc_property_t *starter_property = NULL, *current_property;
595 utf8proc_propval_t max_combining_class = -1;
596 utf8proc_ssize_t rpos;
597 utf8proc_ssize_t wpos = 0;
598 utf8proc_int32_t composition;
599 for (rpos = 0; rpos < length; rpos++) {
600 current_char = buffer[rpos];
601 current_property = unsafe_get_property(current_char);
602 if (starter && current_property->combining_class > max_combining_class) {
603 /* combination perhaps possible */
604 utf8proc_int32_t hangul_lindex;
605 utf8proc_int32_t hangul_sindex;
606 hangul_lindex = *starter - UTF8PROC_HANGUL_LBASE;
607 if (hangul_lindex >= 0 && hangul_lindex < UTF8PROC_HANGUL_LCOUNT) {
608 utf8proc_int32_t hangul_vindex;
609 hangul_vindex = current_char - UTF8PROC_HANGUL_VBASE;
610 if (hangul_vindex >= 0 && hangul_vindex < UTF8PROC_HANGUL_VCOUNT) {
611 *starter = UTF8PROC_HANGUL_SBASE +
612 (hangul_lindex * UTF8PROC_HANGUL_VCOUNT + hangul_vindex) *
613 UTF8PROC_HANGUL_TCOUNT;
614 starter_property = NULL;
618 hangul_sindex = *starter - UTF8PROC_HANGUL_SBASE;
619 if (hangul_sindex >= 0 && hangul_sindex < UTF8PROC_HANGUL_SCOUNT &&
620 (hangul_sindex % UTF8PROC_HANGUL_TCOUNT) == 0) {
621 utf8proc_int32_t hangul_tindex;
622 hangul_tindex = current_char - UTF8PROC_HANGUL_TBASE;
623 if (hangul_tindex >= 0 && hangul_tindex < UTF8PROC_HANGUL_TCOUNT) {
624 *starter += hangul_tindex;
625 starter_property = NULL;
629 if (!starter_property) {
630 starter_property = unsafe_get_property(*starter);
632 if (starter_property->comb_index < 0x8000 &&
633 current_property->comb_index != UINT16_MAX &&
634 current_property->comb_index >= 0x8000) {
635 int sidx = starter_property->comb_index;
636 int idx = (current_property->comb_index & 0x3FFF) - utf8proc_combinations[sidx];
637 if (idx >= 0 && idx <= utf8proc_combinations[sidx + 1] ) {
639 if (current_property->comb_index & 0x4000) {
640 composition = (utf8proc_combinations[idx] << 16) | utf8proc_combinations[idx+1];
642 composition = utf8proc_combinations[idx];
644 if (composition > 0 && (!(options & UTF8PROC_STABLE) ||
645 !(unsafe_get_property(composition)->comp_exclusion))) {
646 *starter = composition;
647 starter_property = NULL;
653 buffer[wpos] = current_char;
654 if (current_property->combining_class) {
655 if (current_property->combining_class > max_combining_class) {
656 max_combining_class = current_property->combining_class;
659 starter = buffer + wpos;
660 starter_property = NULL;
661 max_combining_class = -1;
670 UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_reencode(utf8proc_int32_t *buffer, utf8proc_ssize_t length, utf8proc_option_t options) {
671 /* UTF8PROC_NULLTERM option will be ignored, 'length' is never ignored
672 ASSERT: 'buffer' has one spare byte of free space at the end! */
673 length = utf8proc_normalize_utf32(buffer, length, options);
674 if (length < 0) return length;
676 utf8proc_ssize_t rpos, wpos = 0;
678 if (options & UTF8PROC_CHARBOUND) {
679 for (rpos = 0; rpos < length; rpos++) {
681 wpos += unsafe_encode_char(uc, ((utf8proc_uint8_t *)buffer) + wpos);
684 for (rpos = 0; rpos < length; rpos++) {
686 wpos += utf8proc_encode_char(uc, ((utf8proc_uint8_t *)buffer) + wpos);
689 ((utf8proc_uint8_t *)buffer)[wpos] = 0;
694 UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_map(
695 const utf8proc_uint8_t *str, utf8proc_ssize_t strlen, utf8proc_uint8_t **dstptr, utf8proc_option_t options
697 return utf8proc_map_custom(str, strlen, dstptr, options, NULL, NULL);
700 UTF8PROC_DLLEXPORT utf8proc_ssize_t utf8proc_map_custom(
701 const utf8proc_uint8_t *str, utf8proc_ssize_t strlen, utf8proc_uint8_t **dstptr, utf8proc_option_t options,
702 utf8proc_custom_func custom_func, void *custom_data
704 utf8proc_int32_t *buffer;
705 utf8proc_ssize_t result;
707 result = utf8proc_decompose_custom(str, strlen, NULL, 0, options, custom_func, custom_data);
708 if (result < 0) return result;
709 buffer = (utf8proc_int32_t *) malloc(result * sizeof(utf8proc_int32_t) + 1);
710 if (!buffer) return UTF8PROC_ERROR_NOMEM;
711 result = utf8proc_decompose_custom(str, strlen, buffer, result, options, custom_func, custom_data);
716 result = utf8proc_reencode(buffer, result, options);
722 utf8proc_int32_t *newptr;
723 newptr = (utf8proc_int32_t *) realloc(buffer, (size_t)result+1);
724 if (newptr) buffer = newptr;
726 *dstptr = (utf8proc_uint8_t *)buffer;
730 UTF8PROC_DLLEXPORT utf8proc_uint8_t *utf8proc_NFD(const utf8proc_uint8_t *str) {
731 utf8proc_uint8_t *retval;
732 utf8proc_map(str, 0, &retval, UTF8PROC_NULLTERM | UTF8PROC_STABLE |
737 UTF8PROC_DLLEXPORT utf8proc_uint8_t *utf8proc_NFC(const utf8proc_uint8_t *str) {
738 utf8proc_uint8_t *retval;
739 utf8proc_map(str, 0, &retval, UTF8PROC_NULLTERM | UTF8PROC_STABLE |
744 UTF8PROC_DLLEXPORT utf8proc_uint8_t *utf8proc_NFKD(const utf8proc_uint8_t *str) {
745 utf8proc_uint8_t *retval;
746 utf8proc_map(str, 0, &retval, UTF8PROC_NULLTERM | UTF8PROC_STABLE |
747 UTF8PROC_DECOMPOSE | UTF8PROC_COMPAT);
751 UTF8PROC_DLLEXPORT utf8proc_uint8_t *utf8proc_NFKC(const utf8proc_uint8_t *str) {
752 utf8proc_uint8_t *retval;
753 utf8proc_map(str, 0, &retval, UTF8PROC_NULLTERM | UTF8PROC_STABLE |
754 UTF8PROC_COMPOSE | UTF8PROC_COMPAT);