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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 :
21 : #include <breakiteratorImpl.hxx>
22 : #include <unicode/uchar.h>
23 : #include <i18nutil/unicode.hxx>
24 : #include <rtl/ustrbuf.hxx>
25 :
26 : using namespace ::com::sun::star::uno;
27 : using namespace ::com::sun::star::lang;
28 : using namespace ::rtl;
29 :
30 : namespace com { namespace sun { namespace star { namespace i18n {
31 :
32 1343 : BreakIteratorImpl::BreakIteratorImpl( const Reference < XComponentContext >& rxContext ) : m_xContext( rxContext )
33 : {
34 1343 : }
35 :
36 93 : BreakIteratorImpl::BreakIteratorImpl()
37 : {
38 93 : }
39 :
40 4010 : BreakIteratorImpl::~BreakIteratorImpl()
41 : {
42 : // Clear lookuptable
43 1525 : for (size_t l = 0; l < lookupTable.size(); l++)
44 165 : delete lookupTable[l];
45 1360 : lookupTable.clear();
46 2650 : }
47 :
48 : #define LBI getLocaleSpecificBreakIterator(rLocale)
49 :
50 9649 : sal_Int32 SAL_CALL BreakIteratorImpl::nextCharacters( const OUString& Text, sal_Int32 nStartPos,
51 : const Locale &rLocale, sal_Int16 nCharacterIteratorMode, sal_Int32 nCount, sal_Int32& nDone )
52 : throw(RuntimeException)
53 : {
54 9649 : if (nCount < 0) throw RuntimeException();
55 :
56 9649 : return LBI->nextCharacters( Text, nStartPos, rLocale, nCharacterIteratorMode, nCount, nDone);
57 : }
58 :
59 31 : sal_Int32 SAL_CALL BreakIteratorImpl::previousCharacters( const OUString& Text, sal_Int32 nStartPos,
60 : const Locale& rLocale, sal_Int16 nCharacterIteratorMode, sal_Int32 nCount, sal_Int32& nDone )
61 : throw(RuntimeException)
62 : {
63 31 : if (nCount < 0) throw RuntimeException();
64 :
65 31 : return LBI->previousCharacters( Text, nStartPos, rLocale, nCharacterIteratorMode, nCount, nDone);
66 : }
67 :
68 : #define isZWSP(c) (ch == 0x200B)
69 :
70 8461 : static sal_Int32 skipSpace(const OUString& Text, sal_Int32 nPos, sal_Int32 len, sal_Int16 rWordType, sal_Bool bDirection)
71 : {
72 8461 : sal_uInt32 ch=0;
73 8461 : sal_Int32 pos=nPos;
74 8461 : switch (rWordType) {
75 : case WordType::ANYWORD_IGNOREWHITESPACES:
76 25 : if (bDirection)
77 13 : while (nPos < len && (u_isWhitespace(ch = Text.iterateCodePoints(&pos, 1)) || isZWSP(ch))) nPos=pos;
78 : else
79 12 : while (nPos > 0 && (u_isWhitespace(ch = Text.iterateCodePoints(&pos, -1)) || isZWSP(ch))) nPos=pos;
80 25 : break;
81 : case WordType::DICTIONARY_WORD:
82 6806 : if (bDirection)
83 6972 : while (nPos < len && (u_isWhitespace(ch = Text.iterateCodePoints(&pos, 1)) || isZWSP(ch) ||
84 3525 : ! (ch == 0x002E || u_isalnum(ch)))) nPos=pos;
85 : else
86 8544 : while (nPos > 0 && (u_isWhitespace(ch = Text.iterateCodePoints(&pos, -1)) || isZWSP(ch) ||
87 3140 : ! (ch == 0x002E || u_isalnum(ch)))) nPos=pos;
88 6806 : break;
89 : case WordType::WORD_COUNT:
90 1352 : if (bDirection)
91 676 : while (nPos < len && (u_isUWhiteSpace(ch = Text.iterateCodePoints(&pos, 1)) || isZWSP(ch))) nPos=pos;
92 : else
93 676 : while (nPos > 0 && (u_isUWhiteSpace(ch = Text.iterateCodePoints(&pos, -1)) || isZWSP(ch))) nPos=pos;
94 1352 : break;
95 : }
96 8461 : return nPos;
97 : }
98 :
99 16 : Boundary SAL_CALL BreakIteratorImpl::nextWord( const OUString& Text, sal_Int32 nStartPos,
100 : const Locale& rLocale, sal_Int16 rWordType ) throw(RuntimeException)
101 : {
102 16 : sal_Int32 len = Text.getLength();
103 16 : if( nStartPos < 0 || len == 0 )
104 1 : result.endPos = result.startPos = 0;
105 15 : else if (nStartPos >= len)
106 0 : result.endPos = result.startPos = len;
107 : else {
108 15 : result = LBI->nextWord(Text, nStartPos, rLocale, rWordType);
109 :
110 15 : nStartPos = skipSpace(Text, result.startPos, len, rWordType, sal_True);
111 :
112 15 : if ( nStartPos != result.startPos) {
113 0 : if( nStartPos >= len )
114 0 : result.startPos = result.endPos = len;
115 : else {
116 0 : result = LBI->getWordBoundary(Text, nStartPos, rLocale, rWordType, sal_True);
117 : // i88041: avoid startPos goes back to nStartPos when switching between Latin and CJK scripts
118 0 : if (result.startPos < nStartPos) result.startPos = nStartPos;
119 : }
120 : }
121 : }
122 16 : return result;
123 : }
124 :
125 0 : static inline sal_Bool SAL_CALL isCJK( const Locale& rLocale ) {
126 0 : return rLocale.Language == "zh" || rLocale.Language == "ja" || rLocale.Language == "ko";
127 : }
128 :
129 10 : Boundary SAL_CALL BreakIteratorImpl::previousWord( const OUString& Text, sal_Int32 nStartPos,
130 : const Locale& rLocale, sal_Int16 rWordType) throw(RuntimeException)
131 : {
132 10 : sal_Int32 len = Text.getLength();
133 10 : if( nStartPos <= 0 || len == 0 ) {
134 0 : result.endPos = result.startPos = 0;
135 0 : return result;
136 10 : } else if (nStartPos > len) {
137 0 : result.endPos = result.startPos = len;
138 0 : return result;
139 : }
140 :
141 10 : sal_Int32 nPos = skipSpace(Text, nStartPos, len, rWordType, sal_False);
142 :
143 : // if some spaces are skiped, and the script type is Asian with no CJK rLocale, we have to return
144 : // (nStartPos, -1) for caller to send correct rLocale for loading correct dictionary.
145 10 : result.startPos = nPos;
146 10 : if (nPos != nStartPos && nPos > 0 && !isCJK(rLocale) && getScriptClass(Text.iterateCodePoints(&nPos, -1)) == ScriptType::ASIAN) {
147 0 : result.endPos = -1;
148 0 : return result;
149 : }
150 :
151 10 : return LBI->previousWord(Text, result.startPos, rLocale, rWordType);
152 : }
153 :
154 :
155 7052 : Boundary SAL_CALL BreakIteratorImpl::getWordBoundary( const OUString& Text, sal_Int32 nPos, const Locale& rLocale,
156 : sal_Int16 rWordType, sal_Bool bDirection ) throw(RuntimeException)
157 : {
158 7052 : sal_Int32 len = Text.getLength();
159 7052 : if( nPos < 0 || len == 0 )
160 2834 : result.endPos = result.startPos = 0;
161 4218 : else if (nPos > len)
162 0 : result.endPos = result.startPos = len;
163 : else {
164 : sal_Int32 next, prev;
165 4218 : next = skipSpace(Text, nPos, len, rWordType, sal_True);
166 4218 : prev = skipSpace(Text, nPos, len, rWordType, sal_False);
167 4218 : if (prev == 0 && next == len) {
168 0 : result.endPos = result.startPos = nPos;
169 4218 : } else if (prev == 0 && ! bDirection) {
170 0 : result.endPos = result.startPos = 0;
171 4218 : } else if (next == len && bDirection) {
172 134 : result.endPos = result.startPos = len;
173 : } else {
174 4084 : if (next != prev) {
175 1247 : if (next == nPos && next != len)
176 1206 : bDirection = sal_True;
177 41 : else if (prev == nPos && prev != 0)
178 0 : bDirection = sal_False;
179 : else
180 41 : nPos = bDirection ? next : prev;
181 : }
182 4084 : result = LBI->getWordBoundary(Text, nPos, rLocale, rWordType, bDirection);
183 : }
184 : }
185 7052 : return result;
186 : }
187 :
188 0 : sal_Bool SAL_CALL BreakIteratorImpl::isBeginWord( const OUString& Text, sal_Int32 nPos,
189 : const Locale& rLocale, sal_Int16 rWordType ) throw(RuntimeException)
190 : {
191 0 : sal_Int32 len = Text.getLength();
192 :
193 0 : if (nPos < 0 || nPos >= len) return sal_False;
194 :
195 0 : sal_Int32 tmp = skipSpace(Text, nPos, len, rWordType, sal_True);
196 :
197 0 : if (tmp != nPos) return sal_False;
198 :
199 0 : result = getWordBoundary(Text, nPos, rLocale, rWordType, sal_True);
200 :
201 0 : return result.startPos == nPos;
202 : }
203 :
204 0 : sal_Bool SAL_CALL BreakIteratorImpl::isEndWord( const OUString& Text, sal_Int32 nPos,
205 : const Locale& rLocale, sal_Int16 rWordType ) throw(RuntimeException)
206 : {
207 0 : sal_Int32 len = Text.getLength();
208 :
209 0 : if (nPos <= 0 || nPos > len) return sal_False;
210 :
211 0 : sal_Int32 tmp = skipSpace(Text, nPos, len, rWordType, sal_False);
212 :
213 0 : if (tmp != nPos) return sal_False;
214 :
215 0 : result = getWordBoundary(Text, nPos, rLocale, rWordType, sal_False);
216 :
217 0 : return result.endPos == nPos;
218 : }
219 :
220 0 : sal_Int32 SAL_CALL BreakIteratorImpl::beginOfSentence( const OUString& Text, sal_Int32 nStartPos,
221 : const Locale &rLocale ) throw(RuntimeException)
222 : {
223 0 : if (nStartPos < 0 || nStartPos > Text.getLength())
224 0 : return -1;
225 0 : if (Text.isEmpty()) return 0;
226 0 : return LBI->beginOfSentence(Text, nStartPos, rLocale);
227 : }
228 :
229 5 : sal_Int32 SAL_CALL BreakIteratorImpl::endOfSentence( const OUString& Text, sal_Int32 nStartPos,
230 : const Locale &rLocale ) throw(RuntimeException)
231 : {
232 5 : if (nStartPos < 0 || nStartPos > Text.getLength())
233 0 : return -1;
234 5 : if (Text.isEmpty()) return 0;
235 5 : return LBI->endOfSentence(Text, nStartPos, rLocale);
236 : }
237 :
238 4354 : LineBreakResults SAL_CALL BreakIteratorImpl::getLineBreak( const OUString& Text, sal_Int32 nStartPos,
239 : const Locale& rLocale, sal_Int32 nMinBreakPos, const LineBreakHyphenationOptions& hOptions,
240 : const LineBreakUserOptions& bOptions ) throw(RuntimeException)
241 : {
242 4354 : return LBI->getLineBreak(Text, nStartPos, rLocale, nMinBreakPos, hOptions, bOptions);
243 : }
244 :
245 290819 : sal_Int16 SAL_CALL BreakIteratorImpl::getScriptType( const OUString& Text, sal_Int32 nPos )
246 : throw(RuntimeException)
247 : {
248 290816 : return (nPos < 0 || nPos >= Text.getLength()) ? ScriptType::WEAK :
249 581635 : getScriptClass(Text.iterateCodePoints(&nPos, 0));
250 : }
251 :
252 :
253 : /** Increments/decrements position first, then obtains character.
254 : @return current position, may be -1 or text length if string was consumed.
255 : */
256 148394 : static sal_Int32 SAL_CALL iterateCodePoints(const OUString& Text, sal_Int32 &nStartPos, sal_Int32 inc, sal_uInt32& ch) {
257 148394 : sal_Int32 nLen = Text.getLength();
258 148394 : if (nStartPos + inc < 0 || nStartPos + inc >= nLen) {
259 17754 : ch = 0;
260 17754 : nStartPos = nStartPos + inc < 0 ? -1 : nLen;
261 : } else {
262 130640 : ch = Text.iterateCodePoints(&nStartPos, inc);
263 : // Fix for #i80436#.
264 : // erAck: 2009-06-30T21:52+0200 This logic looks somewhat
265 : // suspicious as if it cures a symptom.. anyway, had to add
266 : // nStartPos < Text.getLength() to silence the (correct) assertion
267 : // in rtl_uString_iterateCodePoints() if Text was one character
268 : // (codepoint) only, made up of a surrogate pair.
269 : //if (inc > 0 && nStartPos < Text.getLength())
270 : // ch = Text.iterateCodePoints(&nStartPos, 0);
271 : // With surrogates, nStartPos may actually point behind string
272 : // now, even if inc is only +1
273 130640 : if (inc > 0)
274 129760 : ch = (nStartPos < nLen ? Text.iterateCodePoints(&nStartPos, 0) : 0);
275 : }
276 148394 : return nStartPos;
277 : }
278 :
279 :
280 242 : sal_Int32 SAL_CALL BreakIteratorImpl::beginOfScript( const OUString& Text,
281 : sal_Int32 nStartPos, sal_Int16 ScriptType ) throw(RuntimeException)
282 : {
283 242 : if (nStartPos < 0 || nStartPos >= Text.getLength())
284 0 : return -1;
285 :
286 242 : if(ScriptType != getScriptClass(Text.iterateCodePoints(&nStartPos, 0)))
287 0 : return -1;
288 :
289 242 : if (nStartPos == 0) return 0;
290 242 : sal_uInt32 ch=0;
291 1122 : while (iterateCodePoints(Text, nStartPos, -1, ch) >= 0 && ScriptType == getScriptClass(ch)) {
292 858 : if (nStartPos == 0) return 0;
293 : }
294 :
295 22 : return iterateCodePoints(Text, nStartPos, 1, ch);
296 : }
297 :
298 18383 : sal_Int32 SAL_CALL BreakIteratorImpl::endOfScript( const OUString& Text,
299 : sal_Int32 nStartPos, sal_Int16 ScriptType ) throw(RuntimeException)
300 : {
301 18383 : if (nStartPos < 0 || nStartPos >= Text.getLength())
302 73 : return -1;
303 :
304 18310 : if(ScriptType != getScriptClass(Text.iterateCodePoints(&nStartPos, 0)))
305 0 : return -1;
306 :
307 18310 : sal_Int32 strLen = Text.getLength();
308 18310 : sal_uInt32 ch=0;
309 165802 : while(iterateCodePoints(Text, nStartPos, 1, ch) < strLen ) {
310 129738 : sal_Int16 currentCharScriptType = getScriptClass(ch);
311 129738 : if(ScriptType != currentCharScriptType && currentCharScriptType != ScriptType::WEAK)
312 556 : break;
313 : }
314 18310 : return nStartPos;
315 : }
316 :
317 0 : sal_Int32 SAL_CALL BreakIteratorImpl::previousScript( const OUString& Text,
318 : sal_Int32 nStartPos, sal_Int16 ScriptType ) throw(RuntimeException)
319 : {
320 0 : if (nStartPos < 0)
321 0 : return -1;
322 0 : if (nStartPos > Text.getLength())
323 0 : nStartPos = Text.getLength();
324 :
325 0 : sal_Int16 numberOfChange = (ScriptType == getScriptClass(Text.iterateCodePoints(&nStartPos, 0))) ? 3 : 2;
326 :
327 0 : sal_uInt32 ch=0;
328 0 : while (numberOfChange > 0 && iterateCodePoints(Text, nStartPos, -1, ch) >= 0) {
329 0 : if ((((numberOfChange % 2) == 0) ^ (ScriptType != getScriptClass(ch))))
330 0 : numberOfChange--;
331 0 : else if (nStartPos == 0) {
332 0 : if (numberOfChange > 0)
333 0 : numberOfChange--;
334 0 : if (nStartPos > 0)
335 0 : Text.iterateCodePoints(&nStartPos, -1);
336 : else
337 0 : return -1;
338 : }
339 : }
340 0 : return numberOfChange == 0 ? iterateCodePoints(Text, nStartPos, 1, ch) : -1;
341 : }
342 :
343 0 : sal_Int32 SAL_CALL BreakIteratorImpl::nextScript( const OUString& Text, sal_Int32 nStartPos,
344 : sal_Int16 ScriptType ) throw(RuntimeException)
345 :
346 : {
347 0 : if (nStartPos < 0)
348 0 : nStartPos = 0;
349 0 : sal_Int32 strLen = Text.getLength();
350 0 : if (nStartPos > strLen)
351 0 : return -1;
352 :
353 0 : sal_Int16 numberOfChange = (ScriptType == getScriptClass(Text.iterateCodePoints(&nStartPos, 0))) ? 2 : 1;
354 :
355 0 : sal_uInt32 ch=0;
356 0 : while (numberOfChange > 0 && iterateCodePoints(Text, nStartPos, 1, ch) < strLen) {
357 0 : sal_Int16 currentCharScriptType = getScriptClass(ch);
358 0 : if ((numberOfChange == 1) ? (ScriptType == currentCharScriptType) :
359 : (ScriptType != currentCharScriptType && currentCharScriptType != ScriptType::WEAK))
360 0 : numberOfChange--;
361 : }
362 0 : return numberOfChange == 0 ? nStartPos : -1;
363 : }
364 :
365 0 : sal_Int32 SAL_CALL BreakIteratorImpl::beginOfCharBlock( const OUString& Text, sal_Int32 nStartPos,
366 : const Locale& /*rLocale*/, sal_Int16 CharType ) throw(RuntimeException)
367 : {
368 0 : if (CharType == CharType::ANY_CHAR) return 0;
369 0 : if (nStartPos < 0 || nStartPos >= Text.getLength()) return -1;
370 0 : if (CharType != (sal_Int16)u_charType( Text.iterateCodePoints(&nStartPos, 0))) return -1;
371 :
372 0 : sal_Int32 nPos=nStartPos;
373 0 : while(nStartPos > 0 && CharType == (sal_Int16)u_charType(Text.iterateCodePoints(&nPos, -1))) { nStartPos=nPos; }
374 0 : return nStartPos; // begin of char block is inclusive
375 : }
376 :
377 0 : sal_Int32 SAL_CALL BreakIteratorImpl::endOfCharBlock( const OUString& Text, sal_Int32 nStartPos,
378 : const Locale& /*rLocale*/, sal_Int16 CharType ) throw(RuntimeException)
379 : {
380 0 : sal_Int32 strLen = Text.getLength();
381 :
382 0 : if (CharType == CharType::ANY_CHAR) return strLen; // end of char block is exclusive
383 0 : if (nStartPos < 0 || nStartPos >= strLen) return -1;
384 0 : if (CharType != (sal_Int16)u_charType(Text.iterateCodePoints(&nStartPos, 0))) return -1;
385 :
386 0 : sal_uInt32 ch=0;
387 0 : while(iterateCodePoints(Text, nStartPos, 1, ch) < strLen && CharType == (sal_Int16)u_charType(ch)) {}
388 0 : return nStartPos; // end of char block is exclusive
389 : }
390 :
391 0 : sal_Int32 SAL_CALL BreakIteratorImpl::nextCharBlock( const OUString& Text, sal_Int32 nStartPos,
392 : const Locale& /*rLocale*/, sal_Int16 CharType ) throw(RuntimeException)
393 : {
394 0 : if (CharType == CharType::ANY_CHAR) return -1;
395 0 : if (nStartPos < 0 || nStartPos >= Text.getLength()) return -1;
396 :
397 0 : sal_Int16 numberOfChange = (CharType == (sal_Int16)u_charType(Text.iterateCodePoints(&nStartPos, 0))) ? 2 : 1;
398 0 : sal_Int32 strLen = Text.getLength();
399 :
400 0 : sal_uInt32 ch=0;
401 0 : while (numberOfChange > 0 && iterateCodePoints(Text, nStartPos, 1, ch) < strLen) {
402 0 : if ((CharType != (sal_Int16)u_charType(ch)) ^ (numberOfChange == 1))
403 0 : numberOfChange--;
404 : }
405 0 : return numberOfChange == 0 ? nStartPos : -1;
406 : }
407 :
408 0 : sal_Int32 SAL_CALL BreakIteratorImpl::previousCharBlock( const OUString& Text, sal_Int32 nStartPos,
409 : const Locale& /*rLocale*/, sal_Int16 CharType ) throw(RuntimeException)
410 : {
411 0 : if(CharType == CharType::ANY_CHAR) return -1;
412 0 : if (nStartPos < 0 || nStartPos >= Text.getLength()) return -1;
413 :
414 0 : sal_Int16 numberOfChange = (CharType == (sal_Int16)u_charType(Text.iterateCodePoints(&nStartPos, 0))) ? 3 : 2;
415 :
416 0 : sal_uInt32 ch=0;
417 0 : while (numberOfChange > 0 && iterateCodePoints(Text, nStartPos, -1, ch) >= 0) {
418 0 : if (((numberOfChange % 2) == 0) ^ (CharType != (sal_Int16)u_charType(ch)))
419 0 : numberOfChange--;
420 0 : if (nStartPos == 0 && numberOfChange > 0) {
421 0 : numberOfChange--;
422 0 : if (numberOfChange == 0) return nStartPos;
423 : }
424 : }
425 0 : return numberOfChange == 0 ? iterateCodePoints(Text, nStartPos, 1, ch) : -1;
426 : }
427 :
428 :
429 :
430 1953 : sal_Int16 SAL_CALL BreakIteratorImpl::getWordType( const OUString& /*Text*/,
431 : sal_Int32 /*nPos*/, const Locale& /*rLocale*/ ) throw(RuntimeException)
432 : {
433 1953 : return 0;
434 : }
435 :
436 : namespace
437 : {
438 597 : sal_Int16 getScriptClassByUAX24Script(sal_uInt32 currentChar)
439 : {
440 597 : int32_t script = u_getIntPropertyValue(currentChar, UCHAR_SCRIPT);
441 597 : return unicode::getScriptClassFromUScriptCode(static_cast<UScriptCode>(script));
442 : }
443 :
444 : struct UBlock2Script
445 : {
446 : UBlockCode from;
447 : UBlockCode to;
448 : sal_Int16 script;
449 : };
450 :
451 : static UBlock2Script scriptList[] =
452 : {
453 : {UBLOCK_NO_BLOCK, UBLOCK_NO_BLOCK, ScriptType::WEAK},
454 : {UBLOCK_BASIC_LATIN, UBLOCK_ARMENIAN, ScriptType::LATIN},
455 : {UBLOCK_HEBREW, UBLOCK_MYANMAR, ScriptType::COMPLEX},
456 : {UBLOCK_GEORGIAN, UBLOCK_GEORGIAN, ScriptType::LATIN},
457 : {UBLOCK_HANGUL_JAMO, UBLOCK_HANGUL_JAMO, ScriptType::ASIAN},
458 : {UBLOCK_ETHIOPIC, UBLOCK_ETHIOPIC, ScriptType::COMPLEX},
459 : {UBLOCK_CHEROKEE, UBLOCK_RUNIC, ScriptType::LATIN},
460 : {UBLOCK_KHMER, UBLOCK_MONGOLIAN, ScriptType::COMPLEX},
461 : {UBLOCK_LATIN_EXTENDED_ADDITIONAL, UBLOCK_GREEK_EXTENDED, ScriptType::LATIN},
462 : {UBLOCK_NUMBER_FORMS, UBLOCK_NUMBER_FORMS, ScriptType::WEAK},
463 : {UBLOCK_CJK_RADICALS_SUPPLEMENT, UBLOCK_HANGUL_SYLLABLES, ScriptType::ASIAN},
464 : {UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS, UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS, ScriptType::ASIAN},
465 : {UBLOCK_ARABIC_PRESENTATION_FORMS_A, UBLOCK_ARABIC_PRESENTATION_FORMS_A, ScriptType::COMPLEX},
466 : {UBLOCK_CJK_COMPATIBILITY_FORMS, UBLOCK_CJK_COMPATIBILITY_FORMS, ScriptType::ASIAN},
467 : {UBLOCK_ARABIC_PRESENTATION_FORMS_B, UBLOCK_ARABIC_PRESENTATION_FORMS_B, ScriptType::COMPLEX},
468 : {UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS, UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS, ScriptType::ASIAN},
469 : {UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B, UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT, ScriptType::ASIAN},
470 : {UBLOCK_CJK_STROKES, UBLOCK_CJK_STROKES, ScriptType::ASIAN},
471 : {UBLOCK_LATIN_EXTENDED_C, UBLOCK_LATIN_EXTENDED_D, ScriptType::LATIN}
472 : };
473 :
474 : #define scriptListCount SAL_N_ELEMENTS(scriptList)
475 :
476 : //always sets rScriptType
477 : //
478 : //returns true for characters historically explicitly assigned to
479 : //latin/weak/asian
480 : //
481 : //returns false for characters that historically implicitly assigned to
482 : //weak as unknown
483 328009 : bool getCompatibilityScriptClassByBlock(sal_uInt32 currentChar, sal_Int16 &rScriptType)
484 : {
485 328009 : bool bKnown = true;
486 : //handle specific characters always as weak:
487 : // 0x01 - this breaks a word
488 : // 0x02 - this can be inside a word
489 : // 0x20 & 0xA0 - Bug 102975, declare western space and non-break space as WEAK char.
490 328009 : if( 0x01 == currentChar || 0x02 == currentChar || 0x20 == currentChar || 0xA0 == currentChar)
491 57546 : rScriptType = ScriptType::WEAK;
492 : // workaround for Coptic
493 270463 : else if ( 0x2C80 <= currentChar && 0x2CE3 >= currentChar)
494 0 : rScriptType = ScriptType::LATIN;
495 : else
496 : {
497 270463 : UBlockCode block=ublock_getCode(currentChar);
498 270463 : size_t i = 0;
499 824024 : while (i < scriptListCount)
500 : {
501 553561 : if (block <= scriptList[i].to)
502 270463 : break;
503 283098 : ++i;
504 : }
505 270463 : if (i < scriptListCount && block >= scriptList[i].from)
506 269866 : rScriptType = scriptList[i].script;
507 : else
508 : {
509 597 : rScriptType = ScriptType::WEAK;
510 597 : bKnown = false;
511 : }
512 : }
513 328009 : return bKnown;
514 : }
515 : }
516 :
517 439744 : sal_Int16 BreakIteratorImpl::getScriptClass(sal_uInt32 currentChar)
518 : {
519 : static sal_uInt32 lastChar = 0;
520 : static sal_Int16 nRet = 0;
521 :
522 439744 : if (currentChar != lastChar)
523 : {
524 328009 : lastChar = currentChar;
525 :
526 328009 : if (!getCompatibilityScriptClassByBlock(currentChar, nRet))
527 597 : nRet = getScriptClassByUAX24Script(currentChar);
528 : }
529 :
530 439744 : return nRet;
531 : }
532 :
533 22580 : static inline sal_Bool operator == (const Locale& l1, const Locale& l2) {
534 22580 : return l1.Language == l2.Language && l1.Country == l2.Country && l1.Variant == l2.Variant;
535 : }
536 :
537 342 : sal_Bool SAL_CALL BreakIteratorImpl::createLocaleSpecificBreakIterator(const OUString& aLocaleName) throw( RuntimeException )
538 : {
539 : // to share service between same Language but different Country code, like zh_CN and zh_TW
540 513 : for (size_t l = 0; l < lookupTable.size(); l++) {
541 200 : lookupTableItem *listItem = lookupTable[l];
542 200 : if (aLocaleName == listItem->aLocale.Language) {
543 29 : xBI = listItem->xBI;
544 29 : return sal_True;
545 : }
546 : }
547 :
548 626 : Reference < uno::XInterface > xI = m_xContext->getServiceManager()->createInstanceWithContext(
549 313 : OUString("com.sun.star.i18n.BreakIterator_") + aLocaleName, m_xContext);
550 :
551 313 : if ( xI.is() ) {
552 93 : xI->queryInterface( getCppuType((const Reference< XBreakIterator>*)0) ) >>= xBI;
553 93 : if (xBI.is()) {
554 93 : lookupTable.push_back(new lookupTableItem(Locale(aLocaleName, aLocaleName, aLocaleName), xBI));
555 93 : return sal_True;
556 : }
557 : }
558 220 : return sal_False;
559 : }
560 :
561 : Reference < XBreakIterator > SAL_CALL
562 18148 : BreakIteratorImpl::getLocaleSpecificBreakIterator(const Locale& rLocale) throw (RuntimeException)
563 : {
564 18148 : if (xBI.is() && rLocale == aLocale)
565 16666 : return xBI;
566 1482 : else if (m_xContext.is()) {
567 1482 : aLocale = rLocale;
568 :
569 4645 : for (size_t i = 0; i < lookupTable.size(); i++) {
570 4523 : lookupTableItem *listItem = lookupTable[i];
571 4523 : if (rLocale == listItem->aLocale)
572 1360 : return xBI = listItem->xBI;
573 : }
574 :
575 122 : sal_Unicode under = (sal_Unicode)'_';
576 :
577 122 : sal_Int32 l = rLocale.Language.getLength();
578 122 : sal_Int32 c = rLocale.Country.getLength();
579 122 : sal_Int32 v = rLocale.Variant.getLength();
580 122 : OUStringBuffer aBuf(l+c+v+3);
581 :
582 931 : if ((l > 0 && c > 0 && v > 0 &&
583 : // load service with name <base>_<lang>_<country>_<varian>
584 0 : createLocaleSpecificBreakIterator(aBuf.append(rLocale.Language).append(under).append(
585 122 : rLocale.Country).append(under).append(rLocale.Variant).makeStringAndClear())) ||
586 : (l > 0 && c > 0 &&
587 : // load service with name <base>_<lang>_<country>
588 113 : createLocaleSpecificBreakIterator(aBuf.append(rLocale.Language).append(under).append(
589 461 : rLocale.Country).makeStringAndClear())) ||
590 113 : (l > 0 && c > 0 && rLocale.Language.compareToAscii("zh") == 0 &&
591 2 : (rLocale.Country.compareToAscii("HK") == 0 ||
592 2 : rLocale.Country.compareToAscii("MO") == 0) &&
593 : // if the country code is HK or MO, one more step to try TW.
594 0 : createLocaleSpecificBreakIterator(aBuf.append(rLocale.Language).append(under).appendAscii(
595 122 : "TW").makeStringAndClear())) ||
596 : (l > 0 &&
597 : // load service with name <base>_<lang>
598 114 : createLocaleSpecificBreakIterator(rLocale.Language)) ||
599 : // load default service with name <base>_Unicode
600 352 : createLocaleSpecificBreakIterator(OUString("Unicode"))) {
601 122 : lookupTable.push_back( new lookupTableItem(aLocale, xBI) );
602 122 : return xBI;
603 122 : }
604 : }
605 0 : throw RuntimeException();
606 : }
607 :
608 : const sal_Char cBreakIterator[] = "com.sun.star.i18n.BreakIterator";
609 :
610 : OUString SAL_CALL
611 0 : BreakIteratorImpl::getImplementationName(void) throw( RuntimeException )
612 : {
613 0 : return OUString::createFromAscii(cBreakIterator);
614 : }
615 :
616 : sal_Bool SAL_CALL
617 0 : BreakIteratorImpl::supportsService(const OUString& rServiceName) throw( RuntimeException )
618 : {
619 0 : return !rServiceName.compareToAscii(cBreakIterator);
620 : }
621 :
622 : Sequence< OUString > SAL_CALL
623 0 : BreakIteratorImpl::getSupportedServiceNames(void) throw( RuntimeException )
624 : {
625 0 : Sequence< OUString > aRet(1);
626 0 : aRet[0] = OUString::createFromAscii(cBreakIterator);
627 0 : return aRet;
628 : }
629 :
630 : } } } }
631 :
632 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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