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 QHELPDBREADER_H
+#define QHELPDBREADER_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/QObject>
+#include <QtCore/QStringList>
+#include <QtCore/QUrl>
+#include <QtCore/QByteArray>
+#include <QtCore/QSet>
+
+QT_BEGIN_NAMESPACE
+
+class QSqlQuery;
+
+class QHelpDBReader : public QObject
+{
+    Q_OBJECT
+
+public:
+    QHelpDBReader(const QString &dbName); 
+    QHelpDBReader(const QString &dbName, const QString &uniqueId,
+        QObject *parent);
+    ~QHelpDBReader();
+
+    bool init();
+
+    QString errorMessage() const;
+
+    QString databaseName() const;
+    QString namespaceName() const;
+    QString virtualFolder() const;
+    QList<QStringList> filterAttributeSets() const;
+    QStringList files(const QStringList &filterAttributes,
+        const QString &extensionFilter = QString()) const;
+    bool fileExists(const QString &virtualFolder, const QString &filePath,
+        const QStringList &filterAttributes = QStringList()) const;
+    QByteArray fileData(const QString &virtualFolder,
+        const QString &filePath) const;
+
+    QStringList customFilters() const;
+    QStringList filterAttributes(const QString &filterName = QString()) const;
+    QStringList indicesForFilter(const QStringList &filterAttributes) const;
+    void linksForKeyword(const QString &keyword, const QStringList &filterAttributes,
+        QMap<QString, QUrl> &linkMap) const;
+
+    void linksForIdentifier(const QString &id, const QStringList &filterAttributes,
+        QMap<QString, QUrl> &linkMap) const;
+
+    QList<QByteArray> contentsForFilter(const QStringList &filterAttributes) const;
+    QUrl urlOfPath(const QString &relativePath) const;
+
+    QSet<int> indexIds(const QStringList &attributes) const;
+    bool createAttributesCache(const QStringList &attributes,
+        const QSet<int> &indexIds);
+    QVariant metaData(const QString &name) const;
+
+private:
+    void initObject(const QString &dbName, const QString &uniqueId);
+    QUrl buildQUrl(const QString &ns, const QString &folder,
+        const QString &relFileName, const QString &anchor) const;
+    QString mergeList(const QStringList &list) const;
+    QString quote(const QString &string) const;
+
+    bool m_initDone;
+    QString m_dbName;
+    QString m_uniqueId;
+    QString m_error;
+    QSqlQuery *m_query;
+    mutable QString m_namespace;
+    QSet<QString> m_viewAttributes;
+    bool m_useAttributesCache;
+    QSet<int> m_indicesCache;
+};
+
+QT_END_NAMESPACE
+
+#endif