/****************************************************************************+
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**+
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** Copyright (C) 2010 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 QtXmlPatterns module 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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#include <QStringList>+
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+
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#include "private/qxmlutils_p.h"+
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#include "qbuiltintypes_p.h"+
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#include "qcommonvalues_p.h"+
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#include "qnamepool_p.h"+
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+
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#include "qxpathhelper_p.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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using namespace QPatternist;+
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+
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bool XPathHelper::isReservedNamespace(const QXmlName::NamespaceCode ns)+
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{+
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    /* The order is because of that XFN and WXS are the most common. */+
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    return ns == StandardNamespaces::fn     ||+
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           ns == StandardNamespaces::xs     ||+
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           ns == StandardNamespaces::xml    ||+
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           ns == StandardNamespaces::xsi;+
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}+
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+
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bool XPathHelper::isQName(const QString &qName)+
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{+
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    const QStringList result(qName.split(QLatin1Char(':')));+
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    const int c = result.count();+
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+
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    if(c == 2)+
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    {+
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        return QXmlUtils::isNCName(result.first()) &&+
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               QXmlUtils::isNCName(result.last());+
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    }+
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    else if(c == 1)+
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        return QXmlUtils::isNCName(result.first());+
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    else+
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        return false;+
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}+
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+
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void XPathHelper::splitQName(const QString &qName, QString &prefix, QString &ncName)+
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{+
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    Q_ASSERT_X(isQName(qName), Q_FUNC_INFO,+
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               "qName must be a valid QName.");+
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+
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    const QStringList result(qName.split(QLatin1Char(':')));+
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+
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    if(result.count() == 1)+
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    {+
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        Q_ASSERT(QXmlUtils::isNCName(result.first()));+
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        ncName = result.first();+
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    }+
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    else+
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    {+
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        Q_ASSERT(result.count() == 2);+
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        Q_ASSERT(QXmlUtils::isNCName(result.first()));+
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        Q_ASSERT(QXmlUtils::isNCName(result.last()));+
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+
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        prefix = result.first();+
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        ncName = result.last();+
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    }+
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}+
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+
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ItemType::Ptr XPathHelper::typeFromKind(const QXmlNodeModelIndex::NodeKind nodeKind)+
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{+
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    switch(nodeKind)+
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    {+
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        case QXmlNodeModelIndex::Element:+
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            return BuiltinTypes::element;+
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        case QXmlNodeModelIndex::Attribute:+
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            return BuiltinTypes::attribute;+
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        case QXmlNodeModelIndex::Text:+
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            return BuiltinTypes::text;+
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        case QXmlNodeModelIndex::ProcessingInstruction:+
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            return BuiltinTypes::pi;+
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        case QXmlNodeModelIndex::Comment:+
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            return BuiltinTypes::comment;+
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        case QXmlNodeModelIndex::Document:+
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            return BuiltinTypes::document;+
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        default:+
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        {+
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            Q_ASSERT_X(false, Q_FUNC_INFO,+
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                       "A node type that doesn't exist in the XPath Data Model was encountered.");+
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            return ItemType::Ptr(); /* Dummy, silence compiler warning. */+
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        }+
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    }+
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}+
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+
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QUrl XPathHelper::normalizeQueryURI(const QUrl &uri)+
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{+
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    Q_ASSERT_X(uri.isEmpty() || uri.isValid(), Q_FUNC_INFO,+
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               "The URI passed to QXmlQuery::setQuery() must be valid or empty.");+
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    if(uri.isEmpty())+
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        return QUrl::fromLocalFile(QCoreApplication::applicationFilePath());+
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    else if(uri.isRelative())+
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        return QUrl::fromLocalFile(QCoreApplication::applicationFilePath()).resolved(uri);+
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    else+
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        return uri;+
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}+
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+
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QT_END_NAMESPACE+
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