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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 <rtl/ustrbuf.hxx>
22 : #include <i18nutil/casefolding.hxx>
23 : #include <i18nutil/unicode.hxx>
24 :
25 : #include <comphelper/processfactory.hxx>
26 : #include <comphelper/string.hxx>
27 : #include <osl/diagnose.h>
28 :
29 : #include <string.h>
30 :
31 : #include "characterclassificationImpl.hxx"
32 : #include "breakiteratorImpl.hxx"
33 :
34 : #define TRANSLITERATION_ALL
35 : #include "transliteration_body.hxx"
36 :
37 : using namespace ::com::sun::star::uno;
38 : using namespace ::com::sun::star::lang;
39 : using namespace ::rtl;
40 :
41 : namespace com { namespace sun { namespace star { namespace i18n {
42 :
43 :
44 15827 : Transliteration_body::Transliteration_body()
45 : {
46 15827 : nMappingType = 0;
47 15827 : transliterationName = "Transliteration_body";
48 15827 : implementationName = "com.sun.star.i18n.Transliteration.Transliteration_body";
49 15827 : }
50 :
51 0 : sal_Int16 SAL_CALL Transliteration_body::getType() throw(RuntimeException)
52 : {
53 0 : return TransliterationType::ONE_TO_ONE;
54 : }
55 :
56 0 : sal_Bool SAL_CALL Transliteration_body::equals(
57 : const OUString& /*str1*/, sal_Int32 /*pos1*/, sal_Int32 /*nCount1*/, sal_Int32& /*nMatch1*/,
58 : const OUString& /*str2*/, sal_Int32 /*pos2*/, sal_Int32 /*nCount2*/, sal_Int32& /*nMatch2*/)
59 : throw(RuntimeException)
60 : {
61 0 : throw RuntimeException();
62 : }
63 :
64 : Sequence< OUString > SAL_CALL
65 0 : Transliteration_body::transliterateRange( const OUString& str1, const OUString& str2 )
66 : throw( RuntimeException)
67 : {
68 0 : Sequence< OUString > ostr(2);
69 0 : ostr[0] = str1;
70 0 : ostr[1] = str2;
71 0 : return ostr;
72 : }
73 :
74 :
75 12 : static sal_uInt8 lcl_getMappingTypeForToggleCase( sal_uInt8 nMappingType, sal_Unicode cChar )
76 : {
77 12 : sal_uInt8 nRes = nMappingType;
78 :
79 : // take care of TOGGLE_CASE transliteration:
80 : // nMappingType should not be a combination of flags, thuse we decide now
81 : // which one to use.
82 12 : if (nMappingType == (MappingTypeLowerToUpper | MappingTypeUpperToLower))
83 : {
84 12 : const sal_Int16 nType = unicode::getUnicodeType( cChar );
85 12 : if (nType & 0x02 /* lower case*/)
86 10 : nRes = MappingTypeLowerToUpper;
87 : else
88 : {
89 : // should also work properly for non-upper characters like white spacs, numbers, ...
90 2 : nRes = MappingTypeUpperToLower;
91 : }
92 : }
93 :
94 12 : return nRes;
95 : }
96 :
97 :
98 : OUString SAL_CALL
99 756421 : Transliteration_body::transliterate(
100 : const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount,
101 : Sequence< sal_Int32 >& offset)
102 : throw(RuntimeException)
103 : {
104 :
105 756421 : const sal_Unicode *in = inStr.getStr() + startPos;
106 :
107 : // Two different blocks to eliminate the if(useOffset) condition inside the
108 : // inner k loop. Yes, on massive use even such small things do count.
109 756421 : if ( useOffset )
110 : {
111 474 : sal_Int32 nOffCount = 0, i;
112 14787 : for (i = 0; i < nCount; i++)
113 : {
114 : // take care of TOGGLE_CASE transliteration:
115 14313 : sal_uInt8 nTmpMappingType = nMappingType;
116 14313 : if (nMappingType == (MappingTypeLowerToUpper | MappingTypeUpperToLower))
117 6 : nTmpMappingType = lcl_getMappingTypeForToggleCase( nMappingType, in[i] );
118 :
119 14313 : const Mapping &map = casefolding::getValue( in, i, nCount, aLocale, nTmpMappingType );
120 14313 : nOffCount += map.nmap;
121 : }
122 474 : rtl_uString* pStr = rtl_uString_alloc(nOffCount);
123 474 : sal_Unicode* out = pStr->buffer;
124 :
125 474 : if ( nOffCount != offset.getLength() )
126 0 : offset.realloc( nOffCount );
127 :
128 474 : sal_Int32 j = 0;
129 474 : sal_Int32 * pArr = offset.getArray();
130 14787 : for (i = 0; i < nCount; i++)
131 : {
132 : // take care of TOGGLE_CASE transliteration:
133 14313 : sal_uInt8 nTmpMappingType = nMappingType;
134 14313 : if (nMappingType == (MappingTypeLowerToUpper | MappingTypeUpperToLower))
135 6 : nTmpMappingType = lcl_getMappingTypeForToggleCase( nMappingType, in[i] );
136 :
137 14313 : const Mapping &map = casefolding::getValue( in, i, nCount, aLocale, nTmpMappingType );
138 28626 : for (sal_Int32 k = 0; k < map.nmap; k++)
139 : {
140 14313 : pArr[j] = i + startPos;
141 14313 : out[j++] = map.map[k];
142 : }
143 : }
144 474 : out[j] = 0;
145 :
146 474 : return OUString( pStr, SAL_NO_ACQUIRE );
147 : }
148 : else
149 : {
150 : // In the simple case of no offset sequence used we can eliminate the
151 : // first getValue() loop. We could also assume that most calls result
152 : // in identical string lengths, thus using a preallocated
153 : // OUStringBuffer could be an easy way to assemble the return string
154 : // without too much hassle. However, for single characters the
155 : // OUStringBuffer::append() method is quite expensive compared to a
156 : // simple array operation, so it pays here to copy the final result
157 : // instead.
158 :
159 : // Allocate the max possible buffer. Try to use stack instead of heap,
160 : // which would have to be reallocated most times anyways.
161 755947 : const sal_Int32 nLocalBuf = 2048;
162 755947 : sal_Unicode aLocalBuf[ nLocalBuf * NMAPPINGMAX ], *out = aLocalBuf, *pHeapBuf = NULL;
163 755947 : if ( nCount > nLocalBuf )
164 0 : out = pHeapBuf = new sal_Unicode[ nCount * NMAPPINGMAX ];
165 :
166 755947 : sal_Int32 j = 0;
167 7103170 : for ( sal_Int32 i = 0; i < nCount; i++)
168 : {
169 : // take care of TOGGLE_CASE transliteration:
170 6347223 : sal_uInt8 nTmpMappingType = nMappingType;
171 6347223 : if (nMappingType == (MappingTypeLowerToUpper | MappingTypeUpperToLower))
172 0 : nTmpMappingType = lcl_getMappingTypeForToggleCase( nMappingType, in[i] );
173 :
174 6347223 : const Mapping &map = casefolding::getValue( in, i, nCount, aLocale, nTmpMappingType );
175 12694446 : for (sal_Int32 k = 0; k < map.nmap; k++)
176 : {
177 6347223 : out[j++] = map.map[k];
178 : }
179 : }
180 :
181 755947 : OUString aRet( out, j );
182 755947 : if ( pHeapBuf )
183 0 : delete [] pHeapBuf;
184 755947 : return aRet;
185 : }
186 : }
187 :
188 : OUString SAL_CALL
189 0 : Transliteration_body::transliterateChar2String( sal_Unicode inChar ) throw(RuntimeException)
190 : {
191 0 : const Mapping &map = casefolding::getValue(&inChar, 0, 1, aLocale, nMappingType);
192 0 : rtl_uString* pStr = rtl_uString_alloc(map.nmap);
193 0 : sal_Unicode* out = pStr->buffer;
194 : sal_Int32 i;
195 :
196 0 : for (i = 0; i < map.nmap; i++)
197 0 : out[i] = map.map[i];
198 0 : out[i] = 0;
199 :
200 0 : return OUString( pStr, SAL_NO_ACQUIRE );
201 : }
202 :
203 : sal_Unicode SAL_CALL
204 8 : Transliteration_body::transliterateChar2Char( sal_Unicode inChar ) throw(MultipleCharsOutputException, RuntimeException)
205 : {
206 8 : const Mapping &map = casefolding::getValue(&inChar, 0, 1, aLocale, nMappingType);
207 8 : if (map.nmap > 1)
208 0 : throw MultipleCharsOutputException();
209 8 : return map.map[0];
210 : }
211 :
212 : OUString SAL_CALL
213 0 : Transliteration_body::folding( const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount,
214 : Sequence< sal_Int32 >& offset) throw(RuntimeException)
215 : {
216 0 : return this->transliterate(inStr, startPos, nCount, offset);
217 : }
218 :
219 15729 : Transliteration_casemapping::Transliteration_casemapping()
220 : {
221 15729 : nMappingType = 0;
222 15729 : transliterationName = "casemapping(generic)";
223 15729 : implementationName = "com.sun.star.i18n.Transliteration.Transliteration_casemapping";
224 15729 : }
225 :
226 : void SAL_CALL
227 755918 : Transliteration_casemapping::setMappingType( const sal_uInt8 rMappingType, const Locale& rLocale )
228 : {
229 755918 : nMappingType = rMappingType;
230 755918 : aLocale = rLocale;
231 755918 : }
232 :
233 2 : Transliteration_u2l::Transliteration_u2l()
234 : {
235 2 : nMappingType = MappingTypeUpperToLower;
236 2 : transliterationName = "upper_to_lower(generic)";
237 2 : implementationName = "com.sun.star.i18n.Transliteration.Transliteration_u2l";
238 2 : }
239 :
240 4 : Transliteration_l2u::Transliteration_l2u()
241 : {
242 4 : nMappingType = MappingTypeLowerToUpper;
243 4 : transliterationName = "lower_to_upper(generic)";
244 4 : implementationName = "com.sun.star.i18n.Transliteration.Transliteration_l2u";
245 4 : }
246 :
247 1 : Transliteration_togglecase::Transliteration_togglecase()
248 : {
249 : // usually nMappingType must NOT be a combiantion of different flages here,
250 : // but we take care of that problem in Transliteration_body::transliterate above
251 : // before that value is used. There we will decide which of both is to be used on
252 : // a per character basis.
253 1 : nMappingType = MappingTypeLowerToUpper | MappingTypeUpperToLower;
254 1 : transliterationName = "toggle(generic)";
255 1 : implementationName = "com.sun.star.i18n.Transliteration.Transliteration_togglecase";
256 1 : }
257 :
258 1 : Transliteration_titlecase::Transliteration_titlecase()
259 : {
260 1 : nMappingType = MappingTypeToTitle;
261 1 : transliterationName = "title(generic)";
262 1 : implementationName = "com.sun.star.i18n.Transliteration.Transliteration_titlecase";
263 1 : }
264 :
265 2 : static OUString transliterate_titlecase_Impl(
266 : const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount,
267 : const Locale &rLocale,
268 : Sequence< sal_Int32 >& offset )
269 : throw(RuntimeException)
270 : {
271 2 : const OUString aText( inStr.copy( startPos, nCount ) );
272 :
273 2 : OUString aRes;
274 2 : if (!aText.isEmpty())
275 : {
276 2 : Reference< XComponentContext > xContext = ::comphelper::getProcessComponentContext();
277 4 : CharacterClassificationImpl aCharClassImpl( xContext );
278 :
279 : // because aCharClassImpl.toTitle does not handle ligatures or ß but will raise
280 : // an exception we need to handle the first chara manually...
281 :
282 : // we don't want to change surrogates by accident, thuse we use proper code point iteration
283 2 : sal_Int32 nPos = 0;
284 2 : sal_uInt32 cFirstChar = aText.iterateCodePoints( &nPos );
285 4 : OUString aResolvedLigature( &cFirstChar, 1 ); //lcl_ResolveLigature( cFirstChar ) );
286 : // toUpper can be used to properly resolve ligatures and characters like ß
287 2 : aResolvedLigature = aCharClassImpl.toUpper( aResolvedLigature, 0, aResolvedLigature.getLength(), rLocale );
288 : // since toTitle will leave all-uppercase text unchanged we first need to
289 : // use toLower to bring possible 2nd and following charas in lowercase
290 2 : aResolvedLigature = aCharClassImpl.toLower( aResolvedLigature, 0, aResolvedLigature.getLength(), rLocale );
291 2 : sal_Int32 nResolvedLen = aResolvedLigature.getLength();
292 :
293 : // now we can properly use toTitle to get the expected result for the resolved string.
294 : // The rest of the text should just become lowercase.
295 2 : aRes = aCharClassImpl.toTitle( aResolvedLigature, 0, nResolvedLen, rLocale );
296 2 : aRes += aCharClassImpl.toLower( aText, 1, aText.getLength() - 1, rLocale );
297 2 : offset.realloc( aRes.getLength() );
298 :
299 2 : sal_Int32 *pOffset = offset.getArray();
300 2 : sal_Int32 nLen = offset.getLength();
301 14 : for (sal_Int32 i = 0; i < nLen; ++i)
302 : {
303 12 : sal_Int32 nIdx = 0;
304 12 : if (i >= nResolvedLen)
305 10 : nIdx = i - nResolvedLen + 1;
306 12 : pOffset[i] = nIdx;
307 2 : }
308 : }
309 : #if OSL_DEBUG_LEVEL > 1
310 : const sal_Int32 *pCOffset = offset.getConstArray();
311 : (void) pCOffset;
312 : #endif
313 :
314 2 : return aRes;
315 : }
316 :
317 :
318 : // this function expects to be called on a word-by-word basis,
319 : // namely that startPos points to the first char of the word
320 1 : OUString SAL_CALL Transliteration_titlecase::transliterate(
321 : const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount,
322 : Sequence< sal_Int32 >& offset )
323 : throw(RuntimeException)
324 : {
325 1 : return transliterate_titlecase_Impl( inStr, startPos, nCount, aLocale, offset );
326 : }
327 :
328 :
329 1 : Transliteration_sentencecase::Transliteration_sentencecase()
330 : {
331 1 : nMappingType = MappingTypeToTitle; // though only to be applied to the first word...
332 1 : transliterationName = "sentence(generic)";
333 1 : implementationName = "com.sun.star.i18n.Transliteration.Transliteration_sentencecase";
334 1 : }
335 :
336 :
337 : // this function expects to be called on a sentence-by-sentence basis,
338 : // namely that startPos points to the first word (NOT first char!) in the sentence
339 1 : OUString SAL_CALL Transliteration_sentencecase::transliterate(
340 : const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount,
341 : Sequence< sal_Int32 >& offset )
342 : throw(RuntimeException)
343 : {
344 1 : return transliterate_titlecase_Impl( inStr, startPos, nCount, aLocale, offset );
345 : }
346 :
347 :
348 : } } } }
349 :
350 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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