kde-extraapps/kompare/libkomparediff2/stringlistpair.cpp
2014-11-21 16:50:57 +00:00

97 lines
2.6 KiB
C++

/*
* This file is part of KDevelop
* Copyright 2011 Dmitry Risenberg <dmitry.risenberg@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "stringlistpair.h"
#include <QHash>
using namespace Diff2;
unsigned int StringListPair::lengthFirst() const
{
return m_lengthFirst;
}
unsigned int StringListPair::lengthSecond() const
{
return m_lengthSecond;
}
MarkerList StringListPair::markerListFirst() const
{
return m_markersFirst;
}
MarkerList StringListPair::markerListSecond() const
{
return m_markersSecond;
}
void StringListPair::prependFirst(Marker* marker)
{
m_markersFirst.prepend(marker);
}
void StringListPair::prependSecond(Marker* marker)
{
m_markersSecond.prepend(marker);
}
StringListPair::StringListPair(const QStringList& first, const QStringList& second)
: m_first(first), m_second(second)
{
// Do not forget about 1 virtual element - see LevenshteinTable
m_lengthFirst = first.length() + 1;
m_lengthSecond = second.length() + 1;
m_hashesFirst = new unsigned int[m_lengthFirst];
m_hashesSecond = new unsigned int[m_lengthSecond];
m_hashesFirst[0] = qHash(QString(""));
for (unsigned int i = 1; i < m_lengthFirst; ++i) {
m_hashesFirst[i] = qHash(first[i - 1]);
}
m_hashesSecond[0] = qHash(QString(""));
for (unsigned int i = 1; i < m_lengthSecond; ++i) {
m_hashesSecond[i] = qHash(second[i - 1]);
}
}
StringListPair::~StringListPair()
{
delete[] m_hashesFirst;
delete[] m_hashesSecond;
}
bool StringListPair::equal(unsigned int firstIndex, unsigned int secondIndex) const
{
if (m_hashesFirst[firstIndex] != m_hashesSecond[secondIndex]) {
return false;
}
if (firstIndex == 0 || secondIndex == 0) {
return firstIndex == 0 && secondIndex == 0;
}
return m_first[firstIndex - 1] == m_second[secondIndex - 1];
}
bool StringListPair::needFineGrainedOutput(unsigned int) const
{
return true;
}