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Diffstat (limited to 'tools/source/memtools/multisel.cxx')
| -rw-r--r-- | tools/source/memtools/multisel.cxx | 739 |
1 files changed, 739 insertions, 0 deletions
diff --git a/tools/source/memtools/multisel.cxx b/tools/source/memtools/multisel.cxx new file mode 100644 index 000000000..7a8df48d0 --- /dev/null +++ b/tools/source/memtools/multisel.cxx @@ -0,0 +1,739 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <tools/debug.hxx> +#include <tools/multisel.hxx> + +#include <rtl/ustrbuf.hxx> + +void MultiSelection::ImplClear() +{ + // no selected indexes + nSelCount = 0; + aSels.clear(); +} + +sal_Int32 MultiSelection::ImplFindSubSelection( sal_Int32 nIndex ) const +{ + // iterate through the sub selections + sal_Int32 n = 0; + for ( ; + n < sal_Int32(aSels.size()) && nIndex > aSels[ n ].Max(); + ++n ) {} /* empty loop */ + return n; +} + +void MultiSelection::ImplMergeSubSelections( sal_Int32 nPos1, sal_Int32 nPos2 ) +{ + // didn't a sub selection at nPos2 exist? + if ( nPos2 >= sal_Int32(aSels.size()) ) + return; + + // did the sub selections touch each other? + if ( (aSels[ nPos1 ].Max() + 1) == aSels[ nPos2 ].Min() ) + { + // merge them + aSels[ nPos1 ].Max() = aSels[ nPos2 ].Max(); + aSels.erase( aSels.begin() + nPos2 ); + } +} + +MultiSelection::MultiSelection(): + aTotRange( 0, -1 ), + nCurSubSel(0), + nCurIndex(0), + nSelCount(0), + bCurValid(false) +{ +} + +void MultiSelection::Reset() +{ + aTotRange = Range(0, -1); + bCurValid = false; + // clear the old sub selections + ImplClear(); +} + +MultiSelection::MultiSelection( const MultiSelection& rOrig ) : + aTotRange(rOrig.aTotRange), + nSelCount(rOrig.nSelCount), + bCurValid(rOrig.bCurValid) +{ + if ( bCurValid ) + { + nCurSubSel = rOrig.nCurSubSel; + nCurIndex = rOrig.nCurIndex; + } + else + { + nCurSubSel = 0; + nCurIndex = 0; + } + + // copy the sub selections + for (const Range & rSel : rOrig.aSels) + aSels.push_back( rSel ); +} + +MultiSelection::MultiSelection( const Range& rRange ): + aTotRange(rRange), + nCurSubSel(0), + nCurIndex(0), + nSelCount(0), + bCurValid(false) +{ +} + +MultiSelection::~MultiSelection() +{ +} + +MultiSelection& MultiSelection::operator= ( const MultiSelection& rOrig ) +{ + aTotRange = rOrig.aTotRange; + bCurValid = rOrig.bCurValid; + if ( bCurValid ) + { + nCurSubSel = rOrig.nCurSubSel; + nCurIndex = rOrig.nCurIndex; + } + + // clear the old and copy the sub selections + ImplClear(); + for (const Range& rSel : rOrig.aSels) + aSels.push_back( rSel ); + nSelCount = rOrig.nSelCount; + + return *this; +} + +void MultiSelection::SelectAll( bool bSelect ) +{ + ImplClear(); + if ( bSelect ) + { + aSels.push_back( aTotRange ); + nSelCount = aTotRange.Len(); + } +} + +bool MultiSelection::Select( sal_Int32 nIndex, bool bSelect ) +{ + DBG_ASSERT( aTotRange.IsInside(nIndex), "selected index out of range" ); + + // out of range? + if ( !aTotRange.IsInside(nIndex) ) + return false; + + // find the virtual target position + sal_Int32 nSubSelPos = ImplFindSubSelection( nIndex ); + + if ( bSelect ) + { + // is it included in the found sub selection? + if ( nSubSelPos < sal_Int32(aSels.size()) && aSels[ nSubSelPos ].IsInside( nIndex ) ) + // already selected, nothing to do + return false; + + // it will become selected + ++nSelCount; + + // is it at the end of the previous sub selection + if ( nSubSelPos > 0 && + aSels[ nSubSelPos-1 ].Max() == (nIndex-1) ) + { + // expand the previous sub selection + aSels[ nSubSelPos-1 ].Max() = nIndex; + + // try to merge the previous sub selection + ImplMergeSubSelections( nSubSelPos-1, nSubSelPos ); + } + // is it at the beginning of the found sub selection + else if ( nSubSelPos < sal_Int32(aSels.size()) + && aSels[ nSubSelPos ].Min() == (nIndex+1) + ) + // expand the found sub selection + aSels[ nSubSelPos ].Min() = nIndex; + else + { + // create a new sub selection + if ( nSubSelPos < sal_Int32(aSels.size()) ) { + aSels.insert( aSels.begin() + nSubSelPos, Range( nIndex, nIndex ) ); + } else { + aSels.push_back( Range( nIndex, nIndex ) ); + } + if ( bCurValid && nCurSubSel >= nSubSelPos ) + ++nCurSubSel; + } + } + else + { + // is it excluded from the found sub selection? + if ( nSubSelPos >= sal_Int32(aSels.size()) + || !aSels[ nSubSelPos ].IsInside( nIndex ) + ) { + // not selected, nothing to do + return false; + } + + // it will become deselected + --nSelCount; + + // is it the only index in the found sub selection? + if ( aSels[ nSubSelPos ].Len() == 1 ) + { + // remove the complete sub selection + aSels.erase( aSels.begin() + nSubSelPos ); + return true; + } + + // is it at the beginning of the found sub selection? + if ( aSels[ nSubSelPos ].Min() == nIndex ) + ++aSels[ nSubSelPos ].Min(); + // is it at the end of the found sub selection? + else if ( aSels[ nSubSelPos ].Max() == nIndex ) + --aSels[ nSubSelPos ].Max(); + // it is in the middle of the found sub selection? + else + { + // split the sub selection + if ( nSubSelPos < sal_Int32(aSels.size()) ) { + aSels.insert( aSels.begin() + nSubSelPos, Range( aSels[ nSubSelPos ].Min(), nIndex-1 ) ); + } else { + aSels.push_back( Range( aSels[ nSubSelPos ].Min(), nIndex-1 ) ); + } + aSels[ nSubSelPos+1 ].Min() = nIndex + 1; + } + } + + return true; +} + +void MultiSelection::Select( const Range& rIndexRange, bool bSelect ) +{ + sal_Int32 nOld; + + sal_Int32 nTmpMin = rIndexRange.Min(); + sal_Int32 nTmpMax = rIndexRange.Max(); + sal_Int32 nCurMin = FirstSelected(); + sal_Int32 nCurMax = LastSelected(); + DBG_ASSERT(aTotRange.IsInside(nTmpMax), "selected index out of range" ); + DBG_ASSERT(aTotRange.IsInside(nTmpMin), "selected index out of range" ); + + // replace whole selection? + if( aSels.empty() || (nTmpMin <= nCurMin && nTmpMax >= nCurMax ) ) + { + ImplClear(); + if ( bSelect ) + { + aSels.push_back( rIndexRange ); + nSelCount = rIndexRange.Len(); + } + return; + } + // expand on left side? + if( nTmpMax < nCurMin ) + { + if( bSelect ) + { + // extend first range? + if( nCurMin > (nTmpMax+1) ) + { + aSels.insert( aSels.begin(), rIndexRange ); + nSelCount += rIndexRange.Len(); + } + else + { + auto & rRange = aSels.front(); + nOld = rRange.Min(); + rRange.Min() = nTmpMin; + nSelCount += ( nOld - nTmpMin ); + } + bCurValid = false; + } + return; + } + // expand on right side? + else if( nTmpMin > nCurMax ) + { + if( bSelect ) + { + // extend last range? + if( nTmpMin > (nCurMax+1) ) + { + aSels.push_back( rIndexRange ); + nSelCount += rIndexRange.Len(); + } + else + { + auto & rRange = aSels.back(); + nOld = rRange.Max(); + rRange.Max() = nTmpMax; + nSelCount += ( nTmpMax - nOld ); + } + bCurValid = false; + } + return; + } + + // TODO here is potential for optimization + while( nTmpMin <= nTmpMax ) + { + Select( nTmpMin, bSelect ); + nTmpMin++; + } +} + +bool MultiSelection::IsSelected( sal_Int32 nIndex ) const +{ + // find the virtual target position + sal_Int32 nSubSelPos = ImplFindSubSelection( nIndex ); + + return nSubSelPos < sal_Int32(aSels.size()) && aSels[ nSubSelPos ].IsInside(nIndex); +} + +void MultiSelection::Insert( sal_Int32 nIndex, sal_Int32 nCount ) +{ + // find the virtual target position + sal_Int32 nSubSelPos = ImplFindSubSelection( nIndex ); + + // did we need to shift the sub selections? + if ( nSubSelPos < sal_Int32(aSels.size()) ) + { // did we insert an unselected into an existing sub selection? + if ( aSels[ nSubSelPos ].Min() != nIndex + && aSels[ nSubSelPos ].IsInside(nIndex) + ) { // split the sub selection + if ( nSubSelPos < sal_Int32(aSels.size()) ) { + aSels.insert( aSels.begin() + nSubSelPos, Range( aSels[ nSubSelPos ].Min(), nIndex-1 ) ); + } else { + aSels.push_back( Range( aSels[ nSubSelPos ].Min(), nIndex-1 ) ); + } + ++nSubSelPos; + aSels[ nSubSelPos ].Min() = nIndex; + } + + // shift the sub selections behind the inserting position + for ( sal_Int32 nPos = nSubSelPos; nPos < sal_Int32(aSels.size()); ++nPos ) + { + aSels[ nPos ].Min() += nCount; + aSels[ nPos ].Max() += nCount; + } + } + + bCurValid = false; + aTotRange.Max() += nCount; +} + +void MultiSelection::Remove( sal_Int32 nIndex ) +{ + // find the virtual target position + sal_Int32 nSubSelPos = ImplFindSubSelection( nIndex ); + + // did we remove from an existing sub selection? + if ( nSubSelPos < sal_Int32(aSels.size()) + && aSels[ nSubSelPos ].IsInside(nIndex) + ) { + // does this sub selection only contain the index to be deleted + if ( aSels[ nSubSelPos ].Len() == 1 ) { + // completely remove the sub selection + aSels.erase( aSels.begin() + nSubSelPos ); + } else { + // shorten this sub selection + --( aSels[ nSubSelPos++ ].Max() ); + } + + // adjust the selected counter + --nSelCount; + } + + // shift the sub selections behind the removed index + for ( sal_Int32 nPos = nSubSelPos; nPos < sal_Int32(aSels.size()); ++nPos ) + { + --( aSels[ nPos ].Min() ); + --( aSels[ nPos ].Max() ); + } + + bCurValid = false; + aTotRange.Max() -= 1; +} + +sal_Int32 MultiSelection::FirstSelected() +{ + nCurSubSel = 0; + + bCurValid = !aSels.empty(); + if ( !bCurValid ) + return SFX_ENDOFSELECTION; + + nCurIndex = aSels[ 0 ].Min(); + return nCurIndex; +} + +sal_Int32 MultiSelection::LastSelected() +{ + nCurSubSel = aSels.size() - 1; + bCurValid = !aSels.empty(); + + if ( !bCurValid ) + return SFX_ENDOFSELECTION; + + nCurIndex = aSels[ nCurSubSel ].Max(); + return nCurIndex; +} + +sal_Int32 MultiSelection::NextSelected() +{ + if ( !bCurValid ) + return SFX_ENDOFSELECTION; + + // is the next index in the current sub selection too? + if ( nCurIndex < aSels[ nCurSubSel ].Max() ) + return ++nCurIndex; + + // are there further sub selections? + if ( ++nCurSubSel >= sal_Int32(aSels.size()) ) + // we are at the end! + return SFX_ENDOFSELECTION; + + nCurIndex = aSels[ nCurSubSel ].Min(); + return nCurIndex; +} + +void MultiSelection::SetTotalRange( const Range& rTotRange ) +{ + aTotRange = rTotRange; + + // adjust lower boundary + Range* pRange = aSels.empty() ? nullptr : &aSels.front(); + while( pRange ) + { + if( pRange->Max() < aTotRange.Min() ) + { + aSels.erase( aSels.begin() ); + } + else if( pRange->Min() < aTotRange.Min() ) + { + pRange->Min() = aTotRange.Min(); + break; + } + else + break; + + pRange = aSels.empty() ? nullptr : &aSels.front(); + } + + // adjust upper boundary + sal_Int32 nCount = aSels.size(); + while( nCount ) + { + pRange = &aSels[ nCount - 1 ]; + if( pRange->Min() > aTotRange.Max() ) + { + aSels.pop_back(); + } + else if( pRange->Max() > aTotRange.Max() ) + { + pRange->Max() = aTotRange.Max(); + break; + } + else + break; + + nCount = aSels.size(); + } + + // re-calculate selection count + nSelCount = 0; + for (Range const & rSel : aSels) + nSelCount += rSel.Len(); + + bCurValid = false; + nCurIndex = 0; +} + +// StringRangeEnumerator + +StringRangeEnumerator::StringRangeEnumerator( const OUString& i_rInput, + sal_Int32 i_nMinNumber, + sal_Int32 i_nMaxNumber, + sal_Int32 i_nLogicalOffset + ) + : mnCount( 0 ) + , mnMin( i_nMinNumber ) + , mnMax( i_nMaxNumber ) + , mnOffset( i_nLogicalOffset ) + , mbValidInput( false ) +{ + // Parse string only if boundaries are valid. + if( mnMin >= 0 && mnMax >= 0 && mnMin <= mnMax ) + mbValidInput = setRange( i_rInput ); +} + +bool StringRangeEnumerator::checkValue( sal_Int32 i_nValue, const std::set< sal_Int32 >* i_pPossibleValues ) const +{ + if( i_nValue < 0 || i_nValue < mnMin || i_nValue > mnMax ) + return false; + if( i_pPossibleValues && i_pPossibleValues->find( i_nValue ) == i_pPossibleValues->end() ) + return false; + return true; +} + +bool StringRangeEnumerator::insertRange( sal_Int32 i_nFirst, sal_Int32 i_nLast, bool bSequence ) +{ + bool bSuccess = true; + if( bSequence ) + { + // Check if the range is completely outside of possible pages range + if ((i_nFirst < mnMin && i_nLast < mnMin) || + (i_nFirst > mnMax && i_nLast > mnMax)) + return false; + if( i_nFirst < mnMin ) + i_nFirst = mnMin; + if( i_nFirst > mnMax ) + i_nFirst = mnMax; + if( i_nLast < mnMin ) + i_nLast = mnMin; + if( i_nLast > mnMax ) + i_nLast = mnMax; + if( checkValue( i_nFirst ) && checkValue( i_nLast ) ) + { + maSequence.push_back( Range( i_nFirst, i_nLast ) ); + sal_Int32 nNumber = i_nLast - i_nFirst; + nNumber = nNumber < 0 ? -nNumber : nNumber; + mnCount += nNumber + 1; + } + else + bSuccess = false; + } + else + { + if( checkValue( i_nFirst ) ) + { + maSequence.push_back( Range( i_nFirst, i_nFirst ) ); + mnCount++; + } + else if( checkValue( i_nLast ) ) + { + maSequence.push_back( Range( i_nLast, i_nLast ) ); + mnCount++; + } + else + bSuccess = false; + } + + return bSuccess; +} + +void StringRangeEnumerator::insertJoinedRanges( + const std::vector< sal_Int32 >& rNumbers ) +{ + size_t nCount = rNumbers.size(); + if( nCount == 0 ) + return; + + if( nCount == 1 ) + { + insertRange( rNumbers[0], -1, false ); + return; + } + + for( size_t i = 0; i < nCount - 1; i++ ) + { + sal_Int32 nFirst = rNumbers[i]; + sal_Int32 nLast = rNumbers[i + 1]; + if( i > 0 ) + { + if ( nFirst > nLast ) nFirst--; + else if( nFirst < nLast ) nFirst++; + } + + insertRange( nFirst, nLast, nFirst != nLast ); + } +} + +bool StringRangeEnumerator::setRange( const OUString& i_rNewRange ) +{ + mnCount = 0; + maSequence.clear(); + + const sal_Unicode* pInput = i_rNewRange.getStr(); + OUStringBuffer aNumberBuf( 16 ); + std::vector< sal_Int32 > aNumbers; + bool bSequence = false; + while( *pInput ) + { + while( *pInput >= '0' && *pInput <= '9' ) + aNumberBuf.append( *pInput++ ); + if( !aNumberBuf.isEmpty() ) + { + sal_Int32 nNumber = aNumberBuf.makeStringAndClear().toInt32() + mnOffset; + aNumbers.push_back( nNumber ); + bSequence = false; + } + + if( *pInput == '-' ) + { + bSequence = true; + if( aNumbers.empty() ) + { + // push out-of-range small value, to exclude ranges totally outside of possible range + aNumbers.push_back( mnMin-1 ); + } + } + else if( *pInput == ',' || *pInput == ';' ) + { + if( bSequence && !aNumbers.empty() ) + { + // push out-of-range large value, to exclude ranges totally outside of possible range + aNumbers.push_back( mnMax+1 ); + } + insertJoinedRanges( aNumbers ); + + aNumbers.clear(); + bSequence = false; + } + else if( *pInput && *pInput != ' ' ) + return false; // parse error + + if( *pInput ) + pInput++; + } + // insert last entries + if( bSequence && !aNumbers.empty() ) + { + // push out-of-range large value, to exclude ranges totally outside of possible range + aNumbers.push_back( mnMax+1 ); + } + insertJoinedRanges( aNumbers ); + + return true; +} + +bool StringRangeEnumerator::hasValue( sal_Int32 i_nValue, const std::set< sal_Int32 >* i_pPossibleValues ) const +{ + if( i_pPossibleValues && i_pPossibleValues->find( i_nValue ) == i_pPossibleValues->end() ) + return false; + size_t n = maSequence.size(); + for( size_t i= 0; i < n; ++i ) + { + const StringRangeEnumerator::Range rRange( maSequence[i] ); + if( rRange.nFirst < rRange.nLast ) + { + if( i_nValue >= rRange.nFirst && i_nValue <= rRange.nLast ) + return true; + } + else + { + if( i_nValue >= rRange.nLast && i_nValue <= rRange.nFirst ) + return true; + } + } + return false; +} + +StringRangeEnumerator::Iterator& StringRangeEnumerator::Iterator::operator++() +{ + if( nRangeIndex >= 0 && nCurrent >= 0 && pEnumerator ) + { + const StringRangeEnumerator::Range& rRange( pEnumerator->maSequence[nRangeIndex] ); + bool bRangeChange = false; + if( rRange.nLast < rRange.nFirst ) + { + // backward range + if( nCurrent > rRange.nLast ) + nCurrent--; + else + bRangeChange = true; + } + else + { + // forward range + if( nCurrent < rRange.nLast ) + nCurrent++; + else + bRangeChange = true; + } + if( bRangeChange ) + { + nRangeIndex++; + if( size_t(nRangeIndex) == pEnumerator->maSequence.size() ) + { + // reached the end + nRangeIndex = nCurrent = -1; + } + else + nCurrent = pEnumerator->maSequence[nRangeIndex].nFirst; + } + if( nRangeIndex != -1 && nCurrent != -1 ) + { + if( ! pEnumerator->checkValue( nCurrent, pPossibleValues ) ) + return ++(*this); + } + } + return *this; +} + + +bool StringRangeEnumerator::Iterator::operator==( const Iterator& i_rCompare ) const +{ + return i_rCompare.pEnumerator == pEnumerator && i_rCompare.nRangeIndex == nRangeIndex && i_rCompare.nCurrent == nCurrent; +} + +StringRangeEnumerator::Iterator StringRangeEnumerator::begin( const std::set< sal_Int32 >* i_pPossibleValues ) const +{ + StringRangeEnumerator::Iterator it( this, + i_pPossibleValues, + maSequence.empty() ? -1 : 0, + maSequence.empty() ? -1 : maSequence[0].nFirst ); + if( ! checkValue(*it, i_pPossibleValues ) ) + ++it; + return it; +} + +StringRangeEnumerator::Iterator StringRangeEnumerator::end( const std::set< sal_Int32 >* i_pPossibleValues ) const +{ + return StringRangeEnumerator::Iterator( this, i_pPossibleValues, -1, -1 ); +} + +bool StringRangeEnumerator::getRangesFromString( const OUString& i_rPageRange, + std::vector< sal_Int32 >& o_rPageVector, + sal_Int32 i_nMinNumber, + sal_Int32 i_nMaxNumber, + sal_Int32 i_nLogicalOffset, + std::set< sal_Int32 > const * i_pPossibleValues + ) +{ + o_rPageVector.clear(); + + StringRangeEnumerator aEnum( i_rPageRange, i_nMinNumber, i_nMaxNumber, i_nLogicalOffset ) ; + + //Even if the input range wasn't completely valid, return what ranges could + //be extracted from the input. + o_rPageVector.reserve( static_cast< size_t >( aEnum.size() ) ); + for( StringRangeEnumerator::Iterator it = aEnum.begin( i_pPossibleValues ); + it != aEnum.end( i_pPossibleValues ); ++it ) + { + o_rPageVector.push_back( *it ); + } + + return aEnum.mbValidInput; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |