Line data    Source code

       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 <com/sun/star/i18n/CharacterIteratorMode.hpp>
      22             : #include <breakiterator_ctl.hxx>
      23             : 
      24             : using namespace ::com::sun::star::uno;
      25             : using namespace ::com::sun::star::lang;
      26             : using namespace ::rtl;
      27             : 
      28             : namespace com { namespace sun { namespace star { namespace i18n {
      29             : 
      30             : /**
      31             :  * Constructor.
      32             :  */
      33           0 : BreakIterator_CTL::BreakIterator_CTL() :
      34             :     cachedText(),
      35             :     nextCellIndex( NULL ),
      36             :     previousCellIndex( NULL ),
      37           0 :     cellIndexSize( 512 )
      38             : {
      39           0 :     cBreakIterator = "com.sun.star.i18n.BreakIterator_CTL";
      40             :     // to improve performance, alloc big enough memory in construct.
      41           0 :     nextCellIndex = (sal_Int32*) calloc(cellIndexSize, sizeof(sal_Int32));
      42           0 :     previousCellIndex = (sal_Int32*) calloc(cellIndexSize, sizeof(sal_Int32));
      43           0 : }
      44             : 
      45             : /**
      46             :  * Deconstructor.
      47             :  */
      48           0 : BreakIterator_CTL::~BreakIterator_CTL()
      49             : {
      50           0 :     free(nextCellIndex);
      51           0 :     free(previousCellIndex);
      52           0 : }
      53             : 
      54           0 : sal_Int32 SAL_CALL BreakIterator_CTL::previousCharacters( const OUString& Text,
      55             :     sal_Int32 nStartPos, const lang::Locale& rLocale,
      56             :     sal_Int16 nCharacterIteratorMode, sal_Int32 nCount, sal_Int32& nDone )
      57             :     throw(RuntimeException, std::exception)
      58             : {
      59           0 :     if (nCharacterIteratorMode == CharacterIteratorMode::SKIPCELL ) {
      60           0 :         nDone = 0;
      61           0 :         if (nStartPos > 0) {    // for others to skip cell.
      62           0 :             makeIndex(Text, nStartPos);
      63             : 
      64           0 :             if (nextCellIndex[nStartPos-1] == 0) // not a CTL character
      65             :                 return BreakIterator_Unicode::previousCharacters(Text, nStartPos, rLocale,
      66           0 :                     nCharacterIteratorMode, nCount, nDone);
      67           0 :             else while (nCount > 0 && nextCellIndex[nStartPos - 1] > 0) {
      68           0 :                 nCount--; nDone++;
      69           0 :                 nStartPos = previousCellIndex[nStartPos - 1];
      70             :             }
      71             :         } else
      72           0 :             nStartPos = 0;
      73             :     } else { // for BS to delete one char.
      74           0 :         nDone = (nStartPos > nCount) ? nCount : nStartPos;
      75           0 :         nStartPos -= nDone;
      76             :     }
      77             : 
      78           0 :     return nStartPos;
      79             : }
      80             : 
      81           0 : sal_Int32 SAL_CALL BreakIterator_CTL::nextCharacters(const OUString& Text,
      82             :     sal_Int32 nStartPos, const lang::Locale& rLocale,
      83             :     sal_Int16 nCharacterIteratorMode, sal_Int32 nCount, sal_Int32& nDone)
      84             :     throw(RuntimeException, std::exception)
      85             : {
      86           0 :     sal_Int32 len = Text.getLength();
      87           0 :     if (nCharacterIteratorMode == CharacterIteratorMode::SKIPCELL ) {
      88           0 :         nDone = 0;
      89           0 :         if (nStartPos < len) {
      90           0 :             makeIndex(Text, nStartPos);
      91             : 
      92           0 :             if (nextCellIndex[nStartPos] == 0) // not a CTL character
      93             :                 return BreakIterator_Unicode::nextCharacters(Text, nStartPos, rLocale,
      94           0 :                     nCharacterIteratorMode, nCount, nDone);
      95           0 :             else while (nCount > 0 && nextCellIndex[nStartPos] > 0) {
      96           0 :                 nCount--; nDone++;
      97           0 :                 nStartPos = nextCellIndex[nStartPos];
      98             :             }
      99             :         } else
     100           0 :             nStartPos = len;
     101             :     } else {
     102           0 :         nDone = (len - nStartPos > nCount) ? nCount : len - nStartPos;
     103           0 :         nStartPos += nDone;
     104             :     }
     105             : 
     106           0 :     return nStartPos;
     107             : }
     108             : 
     109             : // This method should be overwritten by derived language specific class.
     110           0 : void SAL_CALL BreakIterator_CTL::makeIndex(const OUString& /*text*/, sal_Int32 /*pos*/)
     111             :     throw(RuntimeException)
     112             : {
     113           0 :     throw RuntimeException();
     114             : }
     115             : 
     116             : // Make sure line is broken on cell boundary if we implement cell iterator.
     117           0 : LineBreakResults SAL_CALL BreakIterator_CTL::getLineBreak(
     118             :     const OUString& Text, sal_Int32 nStartPos,
     119             :     const lang::Locale& rLocale, sal_Int32 nMinBreakPos,
     120             :     const LineBreakHyphenationOptions& hOptions,
     121             :     const LineBreakUserOptions& bOptions ) throw(RuntimeException, std::exception)
     122             : {
     123             :     LineBreakResults lbr = BreakIterator_Unicode::getLineBreak(Text, nStartPos,
     124           0 :                     rLocale, nMinBreakPos, hOptions, bOptions );
     125           0 :     if (lbr.breakIndex < Text.getLength()) {
     126           0 :         makeIndex(Text, lbr.breakIndex);
     127           0 :         lbr.breakIndex = previousCellIndex[ lbr.breakIndex ];
     128             :     }
     129           0 :     return lbr;
     130             : }
     131             : 
     132             : } } } }
     133             : 
     134             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */