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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Assistant of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef INDEX_H
#define INDEX_H
#include <QStringList>
#include <QHash>
#include <QDataStream>
#include <QObject>
#include <QList>
#include <QFile>
#include <QVector>
QT_BEGIN_NAMESPACE
struct Document {
Document( int d, int f ) : docNumber( d ), frequency( f ) {}
Document() : docNumber( -1 ), frequency( 0 ) {}
bool operator==( const Document &doc ) const {
return docNumber == doc.docNumber;
}
bool operator<( const Document &doc ) const {
return frequency > doc.frequency;
}
bool operator<=( const Document &doc ) const {
return frequency >= doc.frequency;
}
bool operator>( const Document &doc ) const {
return frequency < doc.frequency;
}
qint16 docNumber;
qint16 frequency;
};
QDataStream &operator>>( QDataStream &s, Document &l );
QDataStream &operator<<( QDataStream &s, const Document &l );
class Index : public QObject
{
Q_OBJECT
public:
struct Entry {
Entry( int d ) { documents.append( Document( d, 1 ) ); }
Entry( QVector<Document> l ) : documents( l ) {}
QVector<Document> documents;
};
struct PosEntry {
PosEntry( int p ) { positions.append( p ); }
QList<uint> positions;
};
Index( const QString &dp, const QString &hp );
Index( const QStringList &dl, const QString &hp );
void writeDict();
void readDict();
int makeIndex();
QStringList query( const QStringList&, const QStringList&, const QStringList& );
QString getDocumentTitle( const QString& );
void setDictionaryFile( const QString& );
void setDocListFile( const QString& );
void setDocList( const QStringList & );
signals:
void indexingProgress( int );
private slots:
void setLastWinClosed();
private:
void setupDocumentList();
void parseDocument( const QString&, int );
void insertInDict( const QString&, int );
void writeDocumentList();
void readDocumentList();
QStringList getWildcardTerms( const QString& );
QStringList split( const QString& );
QVector<Document> setupDummyTerm( const QStringList& );
bool searchForPattern( const QStringList&, const QStringList&, const QString& );
void buildMiniDict( const QString& );
QString getCharsetForDocument(QFile *);
QStringList docList;
QHash<QString, Entry*> dict;
QHash<QString, PosEntry*> miniDict;
uint wordNum;
QString docPath;
QString dictFile, docListFile;
bool alreadyHaveDocList;
bool lastWindowClosed;
QHash<QString, QString> documentTitleCache;
};
#endif
QT_END_NAMESPACE
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