/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the Qt Assistant of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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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 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt 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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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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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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#ifndef QHELP_GLOBAL_H+
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#define QHELP_GLOBAL_H+
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+
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#include <QtCore/qglobal.h>+
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#include <QtCore/QString>+
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#include <QtCore/QObject>+
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#include <QtCore/QRegExp>+
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#include <QtCore/QMutexLocker>+
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#include <QtGui/QTextDocument>+
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+
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QT_BEGIN_HEADER+
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+
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QT_BEGIN_NAMESPACE+
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+
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QT_MODULE(Help)+
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+
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#if !defined(QT_SHARED) && !defined(QT_DLL)+
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#   define QHELP_EXPORT+
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#elif defined(QHELP_LIB)+
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#   define QHELP_EXPORT Q_DECL_EXPORT+
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#else+
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#   define QHELP_EXPORT Q_DECL_IMPORT+
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#endif+
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+
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class QHelpGlobal {+
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public:+
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    static QString uniquifyConnectionName(const QString &name, void *pointer)+
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    {+
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        static int counter = 0;+
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        static QMutex mutex;+
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+
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        QMutexLocker locker(&mutex);+
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        if (++counter > 1000)+
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            counter = 0;+
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        +
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        return QString::fromLatin1("%1-%2-%3")+
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            .arg(name).arg(long(pointer)).arg(counter);+
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    };+
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+
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    static QString documentTitle(const QString &content)+
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    {+
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        QString title = QObject::tr("Untitled");+
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        if (!content.isEmpty()) {+
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            int start = content.indexOf(QLatin1String("<title>"), 0, Qt::CaseInsensitive) + 7;+
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            int end = content.indexOf(QLatin1String("</title>"), 0, Qt::CaseInsensitive);+
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            if ((end - start) > 0) {+
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                title = content.mid(start, end - start);+
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                if (Qt::mightBeRichText(title) || title.contains(QLatin1Char('&'))) {+
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                    QTextDocument doc;+
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                    doc.setHtml(title);+
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                    title = doc.toPlainText();+
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                }+
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            }+
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        }+
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        return title;+
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    };+
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+
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    static QString charsetFromData(const QByteArray &data)+
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    {+
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        QString content = QString::fromUtf8(data.constData(), data.size());+
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        int start =+
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            content.indexOf(QLatin1String("<meta"), 0, Qt::CaseInsensitive);+
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        if (start > 0) {+
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            int end;+
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            QRegExp r(QLatin1String("charset=([^\"\\s]+)"));+
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            while (start != -1) {+
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                end = content.indexOf(QLatin1Char('>'), start) + 1;+
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                const QString &meta = content.mid(start, end - start).toLower();+
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                if (r.indexIn(meta) != -1)+
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                    return r.cap(1);+
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                start = content.indexOf(QLatin1String("<meta"), end,+
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                    Qt::CaseInsensitive);+
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            }+
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        }+
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        return QLatin1String("utf-8");+
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    }+
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};+
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+
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QT_END_NAMESPACE+
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+
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QT_END_HEADER+
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+
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#endif // QHELP_GLOBAL_H+
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