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