Alessandro Bonazzi
8c43d5cf2f
Files correlati : cg0.exe cg0700a.msk cg0700b.msk cg3.exe cg4.exe Bug : Commento: Merge 1.0 libraries
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the tools applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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/*
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editdistance.cpp
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*/
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#include "editdistance.h"
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QT_BEGIN_NAMESPACE
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int editDistance( const QString& s, const QString& t )
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{
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#define D( i, j ) d[(i) * n + (j)]
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int i;
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int j;
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int m = s.length() + 1;
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int n = t.length() + 1;
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int *d = new int[m * n];
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int result;
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for ( i = 0; i < m; i++ )
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D( i, 0 ) = i;
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for ( j = 0; j < n; j++ )
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D( 0, j ) = j;
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for ( i = 1; i < m; i++ ) {
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for ( j = 1; j < n; j++ ) {
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if ( s[i - 1] == t[j - 1] ) {
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D( i, j ) = D( i - 1, j - 1 );
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} else {
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int x = D( i - 1, j );
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int y = D( i - 1, j - 1 );
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int z = D( i, j - 1 );
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D( i, j ) = 1 + qMin( qMin(x, y), z );
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}
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}
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}
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result = D( m - 1, n - 1 );
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delete[] d;
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return result;
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#undef D
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}
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QString nearestName( const QString& actual, const QSet<QString>& candidates )
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{
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int deltaBest = 10000;
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int numBest = 0;
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QString best;
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QSet<QString>::ConstIterator c = candidates.begin();
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while ( c != candidates.end() ) {
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if ( (*c)[0] == actual[0] ) {
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int delta = editDistance( actual, *c );
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if ( delta < deltaBest ) {
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deltaBest = delta;
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numBest = 1;
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best = *c;
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} else if ( delta == deltaBest ) {
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numBest++;
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}
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}
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++c;
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}
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if ( numBest == 1 && deltaBest <= 2 &&
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actual.length() + best.length() >= 5 ) {
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return best;
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} else {
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return "";
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}
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}
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QT_END_NAMESPACE
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