Long live Qt 4.5!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QHELPSEARCHINDEXDEFAULT_H
+#define QHELPSEARCHINDEXDEFAULT_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of the help generator tools. This header file may change from version
+// to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/QString>
+#include <QtCore/QVector>
+#include <QtCore/QDataStream>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtHelpInternal {
+
+struct Document {
+    Document(qint16 d, qint16 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;
+};
+
+struct DocumentInfo : public Document {
+    DocumentInfo()
+        : Document(-1, 0), documentTitle(QString()), documentUrl(QString()) {}
+
+    DocumentInfo(qint16 d, qint16 f, const QString &title, const QString &url)
+        : Document(d, f), documentTitle(title), documentUrl(url) {}
+
+    DocumentInfo(const Document &document, const QString &title, const QString &url)
+        : Document(document.docNumber, document.frequency), documentTitle(title), documentUrl(url) {}
+
+    QString documentTitle;
+    QString documentUrl;
+};
+
+struct Entry {
+    Entry(qint16 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;
+};
+
+struct Term {
+    Term() : frequency(-1) {}
+    Term(const QString &t, int f, QVector<Document> l) : term(t), frequency(f), documents(l) {}
+    QString term;
+    int frequency;
+    QVector<Document>documents;
+    bool operator<(const Term &i2) const { return frequency < i2.frequency; }
+};
+
+struct TermInfo {
+    TermInfo() : frequency(-1) {}
+    TermInfo(const QString &t, int f, QVector<DocumentInfo> l)
+        : term(t), frequency(f), documents(l) {}
+
+    bool operator<(const TermInfo &i2) const { return frequency < i2.frequency; }
+
+    QString term;
+    int frequency;
+    QVector<DocumentInfo>documents;
+};
+
+} // namespace QtHelpInternal
+
+using QtHelpInternal::Document;
+using QtHelpInternal::DocumentInfo;
+using QtHelpInternal::Entry;
+using QtHelpInternal::PosEntry;
+using QtHelpInternal::Term;
+using QtHelpInternal::TermInfo;
+
+QDataStream &operator>>(QDataStream &s, Document &l);
+QDataStream &operator<<(QDataStream &s, const Document &l);
+
+QT_END_NAMESPACE
+
+#endif  // QHELPSEARCHINDEXDEFAULT_H