i18npool/source/indexentry/indexentrysupplier_default.cxx

   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 #include <indexentrysupplier_default.hxx>
  21 #include <collatorImpl.hxx>
  22 #include <localedata.hxx>
  23 #include <i18nutil/unicode.hxx>
  24 #include <com/sun/star/i18n/CollatorOptions.hpp>
  25
  26 using namespace ::com::sun::star;
  27 using namespace ::com::sun::star::uno;
  28 using namespace ::com::sun::star::i18n;
  29 using namespace ::com::sun::star::lang;
  30
  31 namespace i18npool {
  32
  33 IndexEntrySupplier_Unicode::IndexEntrySupplier_Unicode(
  34     const css::uno::Reference < css::uno::XComponentContext >& rxContext ) :
  35     IndexEntrySupplier_Common(rxContext)
  36 {
  37     implementationName = "com.sun.star.i18n.IndexEntrySupplier_Unicode";
  38     index.reset( new Index(rxContext) );
  39 }
  40
  41 IndexEntrySupplier_Unicode::~IndexEntrySupplier_Unicode()
  42 {
  43 }
  44
  45 sal_Bool SAL_CALL IndexEntrySupplier_Unicode::loadAlgorithm( const lang::Locale& rLocale,
  46     const OUString& rAlgorithm, sal_Int32 collatorOptions )
  47 {
  48     index->init(rLocale, rAlgorithm);
  49     return IndexEntrySupplier_Common::loadAlgorithm(rLocale, rAlgorithm, collatorOptions);
  50 }
  51
  52 OUString SAL_CALL IndexEntrySupplier_Unicode::getIndexKey( const OUString& rIndexEntry,
  53     const OUString& rPhoneticEntry, const lang::Locale& rLocale )
  54 {
  55     return index->getIndexDescription(getEntry(rIndexEntry, rPhoneticEntry, rLocale));
  56 }
  57
  58 sal_Int16 SAL_CALL IndexEntrySupplier_Unicode::compareIndexEntry(
  59     const OUString& rIndexEntry1, const OUString& rPhoneticEntry1, const lang::Locale& rLocale1,
  60     const OUString& rIndexEntry2, const OUString& rPhoneticEntry2, const lang::Locale& rLocale2 )
  61 {
  62     sal_Int16 result =
  63             index->getIndexWeight(getEntry(rIndexEntry1, rPhoneticEntry1, rLocale1)) -
  64             index->getIndexWeight(getEntry(rIndexEntry2, rPhoneticEntry2, rLocale2));
  65     if (result == 0)
  66         return IndexEntrySupplier_Common::compareIndexEntry(
  67                     rIndexEntry1, rPhoneticEntry1, rLocale1,
  68                     rIndexEntry2, rPhoneticEntry2, rLocale2);
  69     return result > 0 ? 1 : -1;
  70 }
  71
  72 OUString SAL_CALL IndexEntrySupplier_Unicode::getIndexCharacter( const OUString& rIndexEntry,
  73     const lang::Locale& rLocale, const OUString& rAlgorithm ) {
  74
  75     if (loadAlgorithm( rLocale, rAlgorithm, CollatorOptions::CollatorOptions_IGNORE_CASE_ACCENT))
  76         return index->getIndexDescription(rIndexEntry);
  77     else
  78         return IndexEntrySupplier_Common::getIndexCharacter(rIndexEntry, rLocale, rAlgorithm);
  79 }
  80
  81 IndexTable::IndexTable()
  82     : start(0)
  83     , end(0)
  84     , table(nullptr)
  85 {
  86 }
  87
  88 IndexTable::~IndexTable()
  89 {
  90     if (table) free(table);
  91 }
  92
  93 void IndexTable::init(sal_Unicode start_, sal_Unicode end_, IndexKey const *keys, sal_Int16 key_count, Index *index)
  94 {
  95     start=start_;
  96     end=end_;
  97     table = static_cast<sal_uInt8*>(malloc((end-start+1)*sizeof(sal_uInt8)));
  98     for (sal_Unicode i = start; i <= end; i++) {
  99         sal_Int16 j;
 100         for (j = 0; j < key_count; j++) {
 101             if (keys[j].key > 0 && (i == keys[j].key || index->compare(i, keys[j].key) == 0)) {
 102                 table[i-start] = sal::static_int_cast<sal_uInt8>(j);
 103                 break;
 104             }
 105         }
 106         if (j == key_count)
 107             table[i-start] = 0xFF;
 108     }
 109 }
 110
 111 Index::Index(const css::uno::Reference < css::uno::XComponentContext >& rxContext)
 112     : table_count(0)
 113     , key_count(0)
 114     , mkey_count(0)
 115     , collator( new CollatorImpl(rxContext) )
 116 {
 117 }
 118
 119 Index::~Index()
 120 {
 121 }
 122
 123 sal_Int16 Index::compare(sal_Unicode c1, sal_Unicode c2)
 124 {
 125     return sal::static_int_cast<sal_Int16>( collator->compareString(OUString(&c1, 1), OUString(&c2, 1)) );
 126 }
 127
 128 sal_Int16 Index::getIndexWeight(const OUString& rIndexEntry)
 129 {
 130     sal_Int32 startPos=0;
 131     if (!skipping_chars.isEmpty())
 132         while (skipping_chars.indexOf(rIndexEntry[startPos]) >= 0)
 133             startPos++;
 134     if (mkey_count > 0) {
 135         for (sal_Int16 i = 0; i < mkey_count; i++) {
 136             sal_Int32 len = keys[mkeys[i]].mkey.getLength();
 137             if (collator->compareSubstring(rIndexEntry, startPos, len,
 138                                     keys[mkeys[i]].mkey, 0, len) == 0)
 139                 return mkeys[i];
 140         }
 141     }
 142     sal_Unicode code = startPos < rIndexEntry.getLength() ? rIndexEntry[startPos] : 0;
 143     for (sal_Int16 i = 0; i < table_count; i++) {
 144         if (tables[i].start <= code && code <= tables[i].end)
 145             return tables[i].table[code-tables[i].start];
 146     }
 147     return 0xFF;
 148 }
 149
 150 OUString Index::getIndexDescription(const OUString& rIndexEntry)
 151 {
 152     sal_Int16 wgt = getIndexWeight(rIndexEntry);
 153     if (wgt < MAX_KEYS) {
 154         if (!keys[wgt].desc.isEmpty())
 155             return keys[wgt].desc;
 156         else if (keys[wgt].key > 0)
 157             return OUString(&keys[wgt].key, 1);
 158         else
 159             return keys[wgt].mkey;
 160     }
 161     sal_Int32 nPos=0;
 162     sal_uInt32 indexChar=rIndexEntry.iterateCodePoints(&nPos, 0);
 163     return OUString(&indexChar, 1);
 164 }
 165
 166 #define LOCALE_EN lang::Locale("en", OUString(), OUString())
 167
 168 void Index::makeIndexKeys(const lang::Locale &rLocale, const OUString &algorithm)
 169 {
 170     OUString keyStr = LocaleDataImpl::get()->getIndexKeysByAlgorithm(rLocale, algorithm);
 171
 172     if (keyStr.isEmpty()) {
 173         keyStr = LocaleDataImpl::get()->getIndexKeysByAlgorithm(LOCALE_EN,
 174                     LocaleDataImpl::get()->getDefaultIndexAlgorithm(LOCALE_EN));
 175         if (keyStr.isEmpty())
 176             throw RuntimeException();
 177     }
 178
 179     sal_Int16 len = sal::static_int_cast<sal_Int16>( keyStr.getLength() );
 180     mkey_count=key_count=0;
 181     skipping_chars=OUString();
 182     sal_Int16 i, j;
 183
 184     for (i = 0; i < len && key_count < MAX_KEYS; i++)
 185     {
 186         sal_Unicode curr = keyStr[i];
 187         sal_Unicode close = ')';
 188
 189         if (unicode::isWhiteSpace(curr))
 190             continue;
 191
 192         switch(curr) {
 193             case u'-': {
 194                     if (key_count <= 0 || i + 1 >= len)
 195                         throw RuntimeException();
 196                     for (curr = keyStr[++i]; key_count < MAX_KEYS && keys[key_count-1].key < curr; key_count++) {
 197                         keys[key_count].key = keys[key_count-1].key+1;
 198                         keys[key_count].desc.clear();
 199                     }
 200                     break;
 201                 }
 202             case u'[':
 203                 for (i++; i < len && keyStr[i] != ']'; i++) {
 204                     if (unicode::isWhiteSpace(keyStr[i])) {
 205                         continue;
 206                     } else if (keyStr[i] == '_') {
 207                         for (curr=keyStr[i-1]+1;  curr <= keyStr[i+1]; curr++)
 208                             skipping_chars+=OUStringLiteral1(curr);
 209                         i+=2;
 210                     } else {
 211                         skipping_chars+=OUStringLiteral1(keyStr[i]);
 212                     }
 213                 }
 214                 break;
 215             case u'{':
 216                 close = '}';
 217                 [[fallthrough]];
 218             case u'(': {
 219                     if (key_count <= 0)
 220                         throw RuntimeException();
 221
 222                     sal_Int16 end = i+1;
 223                     for (; end < len && keyStr[end] != close; end++) ;
 224
 225                     if (end >= len) // no found
 226                         throw RuntimeException();
 227                     if (close == ')')
 228                         keys[key_count-1].desc = keyStr.copy(i+1, end-i-1);
 229                     else {
 230                         mkeys[mkey_count++]=key_count;
 231                         keys[key_count].key = 0;
 232                         keys[key_count].mkey = keyStr.copy(i+1, end-i-1);
 233                         keys[key_count++].desc.clear();
 234                     }
 235                     i=end+1;
 236                     break;
 237                 }
 238             default:
 239                 keys[key_count].key = curr;
 240                 keys[key_count++].desc.clear();
 241                 break;
 242         }
 243     }
 244     for (i = 0; i < mkey_count; i++) {
 245         for (j=i+1; j < mkey_count; j++) {
 246             if (keys[mkeys[i]].mkey.getLength() < keys[mkeys[j]].mkey.getLength()) {
 247                 sal_Int16 k = mkeys[i];
 248                 mkeys[i] = mkeys[j];
 249                 mkeys[j] = k;
 250             }
 251         }
 252     }
 253 }
 254
 255 void Index::init(const lang::Locale &rLocale, const OUString& algorithm)
 256 {
 257     makeIndexKeys(rLocale, algorithm);
 258
 259     Sequence< UnicodeScript > scriptList = LocaleDataImpl::get()->getUnicodeScripts( rLocale );
 260
 261     if (!scriptList.hasElements()) {
 262         scriptList = LocaleDataImpl::get()->getUnicodeScripts(LOCALE_EN);
 263         if (!scriptList.hasElements())
 264             throw RuntimeException();
 265     }
 266
 267     table_count = sal::static_int_cast<sal_Int16>( scriptList.getLength() );
 268     if (table_count > MAX_TABLES)
 269         throw RuntimeException();
 270
 271     collator->loadCollatorAlgorithm(algorithm, rLocale, CollatorOptions::CollatorOptions_IGNORE_CASE_ACCENT);
 272     sal_Int16 j=0;
 273     sal_Unicode start = unicode::getUnicodeScriptStart(UnicodeScript(0));
 274     sal_Unicode end = unicode::getUnicodeScriptEnd(UnicodeScript(0));
 275     for (sal_Int32 i= (scriptList[0] == UnicodeScript(0)) ? 1 : 0; i< scriptList.getLength(); i++) {
 276         if (unicode::getUnicodeScriptStart(scriptList[i]) != end+1) {
 277             tables[j++].init(start, end, keys, key_count, this);
 278             start = unicode::getUnicodeScriptStart(scriptList[i]);
 279         }
 280         end = unicode::getUnicodeScriptEnd(scriptList[i]);
 281     }
 282     tables[j++].init(start, end, keys, key_count, this);
 283     table_count = j;
 284 }
 285
 286 }
 287
 288 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */