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     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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    16 ** GNU Lesser General Public License Usage

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    40 ****************************************************************************/

    41 

    42 #ifndef INDEX_H

    43 #define INDEX_H

    44 

    45 #include <QStringList>

    46 #include <QHash>

    47 #include <QDataStream>

    48 #include <QObject>

    49 #include <QList>

    50 #include <QFile>

    51 #include <QVector>

    52 

    53 QT_BEGIN_NAMESPACE

    54 

    55 struct Document {

    56     Document( int d, int f ) : docNumber( d ), frequency( f ) {}

    57     Document() : docNumber( -1 ), frequency( 0 ) {}

    58     bool operator==( const Document &doc ) const {

    59 	return docNumber == doc.docNumber;

    60     }

    61     bool operator<( const Document &doc ) const {

    62 	return frequency > doc.frequency;

    63     }

    64     bool operator<=( const Document &doc ) const {

    65 	return frequency >= doc.frequency;

    66     }

    67     bool operator>( const Document &doc ) const {

    68 	return frequency < doc.frequency;

    69     }

    70     qint16 docNumber;

    71     qint16 frequency;

    72 };

    73 

    74 QDataStream &operator>>( QDataStream &s, Document &l );

    75 QDataStream &operator<<( QDataStream &s, const Document &l );

    76 

    77 class Index : public QObject

    78 {

    79     Q_OBJECT

    80 public:

    81     struct Entry {

    82 	    Entry( int d ) { documents.append( Document( d, 1 ) ); }

    83 	    Entry( QVector<Document> l ) : documents( l ) {}

    84 	    QVector<Document> documents;

    85     };

    86     struct PosEntry {

    87 	    PosEntry( int p ) { positions.append( p ); }

    88 	    QList<uint> positions;

    89     };

    90 

    91     Index( const QString &dp, const QString &hp );

    92     Index( const QStringList &dl, const QString &hp );

    93     void writeDict();

    94     void readDict();

    95     int makeIndex();

    96     QStringList query( const QStringList&, const QStringList&, const QStringList& );

    97     QString getDocumentTitle( const QString& );

    98     void setDictionaryFile( const QString& );

    99     void setDocListFile( const QString& );

   100     void setDocList( const QStringList & );

   101 

   102 signals:

   103     void indexingProgress( int );

   104 

   105 private slots:

   106     void setLastWinClosed();

   107 

   108 private:

   109     void setupDocumentList();

   110     void parseDocument( const QString&, int );

   111     void insertInDict( const QString&, int );

   112     void writeDocumentList();

   113     void readDocumentList();

   114     QStringList getWildcardTerms( const QString& );

   115     QStringList split( const QString& );

   116     QVector<Document> setupDummyTerm( const QStringList& );

   117     bool searchForPattern( const QStringList&, const QStringList&, const QString& );

   118     void buildMiniDict( const QString& );

   119     QString getCharsetForDocument(QFile *);

   120     QStringList docList;

   121     QHash<QString, Entry*> dict;

   122     QHash<QString, PosEntry*> miniDict;

   123     uint wordNum;

   124     QString docPath;

   125     QString dictFile, docListFile;

   126     bool alreadyHaveDocList;

   127     bool lastWindowClosed;

   128     QHash<QString, QString> documentTitleCache;

   129 };

   130 

   131 #endif

   132 

   133 QT_END_NAMESPACE