/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtXmlPatterns module of the Qt Toolkit.

**

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** 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 Technology Preview License Agreement accompanying

** this package.

**

** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

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** $QT_END_LICENSE$

**

****************************************************************************/

#include <QStringList>

#include "private/qxmlutils_p.h"

#include "qbuiltintypes_p.h"

#include "qcommonvalues_p.h"

#include "qnamepool_p.h"

#include "qxpathhelper_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

bool XPathHelper::isReservedNamespace(const QXmlName::NamespaceCode ns)

{

    /* The order is because of that XFN and WXS are the most common. */

    return ns == StandardNamespaces::fn     ||

           ns == StandardNamespaces::xs     ||

           ns == StandardNamespaces::xml    ||

           ns == StandardNamespaces::xsi;

}

bool XPathHelper::isQName(const QString &qName)

{

    const QStringList result(qName.split(QLatin1Char(':')));

    const int c = result.count();

    if(c == 2)

    {

        return QXmlUtils::isNCName(result.first()) &&

               QXmlUtils::isNCName(result.last());

    }

    else if(c == 1)

        return QXmlUtils::isNCName(result.first());

    else

        return false;

}

void XPathHelper::splitQName(const QString &qName, QString &prefix, QString &ncName)

{

    Q_ASSERT_X(isQName(qName), Q_FUNC_INFO,

               "qName must be a valid QName.");

    const QStringList result(qName.split(QLatin1Char(':')));

    if(result.count() == 1)

    {

        Q_ASSERT(QXmlUtils::isNCName(result.first()));

        ncName = result.first();

    }

    else

    {

        Q_ASSERT(result.count() == 2);

        Q_ASSERT(QXmlUtils::isNCName(result.first()));

        Q_ASSERT(QXmlUtils::isNCName(result.last()));

        prefix = result.first();

        ncName = result.last();

    }

}

ItemType::Ptr XPathHelper::typeFromKind(const QXmlNodeModelIndex::NodeKind nodeKind)

{

    switch(nodeKind)

    {

        case QXmlNodeModelIndex::Element:

            return BuiltinTypes::element;

        case QXmlNodeModelIndex::Attribute:

            return BuiltinTypes::attribute;

        case QXmlNodeModelIndex::Text:

            return BuiltinTypes::text;

        case QXmlNodeModelIndex::ProcessingInstruction:

            return BuiltinTypes::pi;

        case QXmlNodeModelIndex::Comment:

            return BuiltinTypes::comment;

        case QXmlNodeModelIndex::Document:

            return BuiltinTypes::document;

        default:

        {

            Q_ASSERT_X(false, Q_FUNC_INFO,

                       "A node type that doesn't exist in the XPath Data Model was encountered.");

            return ItemType::Ptr(); /* Dummy, silence compiler warning. */

        }

    }

}

QUrl XPathHelper::normalizeQueryURI(const QUrl &uri)

{

    Q_ASSERT_X(uri.isEmpty() || uri.isValid(), Q_FUNC_INFO,

               "The URI passed to QXmlQuery::setQuery() must be valid or empty.");

    if(uri.isEmpty())

        return QUrl::fromLocalFile(QCoreApplication::applicationFilePath());

    else if(uri.isRelative())

        return QUrl::fromLocalFile(QCoreApplication::applicationFilePath()).resolved(uri);

    else

        return uri;

}

QT_END_NAMESPACE