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

**

** All rights reserved.

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

**

** This file is part of the QtXmlPatterns module 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 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.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

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

#include <QtDebug>

#include "qpatternistlocale_p.h"

#include "qiodevicedelegate_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

QIODeviceDelegate::QIODeviceDelegate(QIODevice *const source) : m_source(source)

{

    Q_ASSERT(m_source);

    connect(source, SIGNAL(aboutToClose()),         SIGNAL(aboutToClose()));

    connect(source, SIGNAL(bytesWritten(qint64)),   SIGNAL(bytesWritten(qint64)));

    connect(source, SIGNAL(readChannelFinished()),  SIGNAL(readChannelFinished()));

    connect(source, SIGNAL(readyRead()),            SIGNAL(readyRead()));

    /* According to Thiago these two signals are very similar, but QtNetworkAccess uses finished()

     * instead for a minor but significant reason. */

    connect(source, SIGNAL(readChannelFinished()), SIGNAL(finished()));

    /* For instance QFile emits no signals, so how do we know if the device has all data available

     * and it therefore is safe and correct to emit finished()? isSequential() tells us whether it's

     * not random access, and whether it's safe to emit finished(). */

    if(m_source->isSequential())

        QMetaObject::invokeMethod(this, "readyRead", Qt::QueuedConnection);

    else

        QMetaObject::invokeMethod(this, "finished", Qt::QueuedConnection);

    setOpenMode(QIODevice::ReadOnly);

    /* Set up the timeout timer. */

    connect(&m_timeout, SIGNAL(timeout()), SLOT(networkTimeout()));

    m_timeout.setSingleShot(true);

    m_timeout.start(Timeout);

}

void QIODeviceDelegate::networkTimeout()

{

    setErrorString(QtXmlPatterns::tr("Network timeout."));

    error(QNetworkReply::TimeoutError);

}

void QIODeviceDelegate::abort()

{

    /* Do nothing, just to please QNetworkReply's pure virtual. */

}

bool QIODeviceDelegate::atEnd() const

{

    return m_source->atEnd();

}

qint64 QIODeviceDelegate::bytesAvailable() const

{

    return m_source->bytesAvailable();

}

qint64 QIODeviceDelegate::bytesToWrite() const

{

    return m_source->bytesToWrite();

}

bool QIODeviceDelegate::canReadLine() const

{

    return m_source->canReadLine();

}

void QIODeviceDelegate::close()

{

    return m_source->close();

}

bool QIODeviceDelegate::isSequential() const

{

    return m_source->isSequential();

}

bool QIODeviceDelegate::open(OpenMode mode)

{

    const bool success = m_source->open(mode);

    setOpenMode(m_source->openMode());

    return success;

}

qint64 QIODeviceDelegate::pos() const

{

    return m_source->pos();

}

bool QIODeviceDelegate::reset()

{

    return m_source->reset();

}

bool QIODeviceDelegate::seek(qint64 pos)

{

    return m_source->seek(pos);

}

qint64 QIODeviceDelegate::size() const

{

    return m_source->size();

}

bool QIODeviceDelegate::waitForBytesWritten(int msecs)

{

    return m_source->waitForBytesWritten(msecs);

}

bool QIODeviceDelegate::waitForReadyRead(int msecs)

{

    return m_source->waitForReadyRead(msecs);

}

qint64 QIODeviceDelegate::readData(char *data, qint64 maxSize)

{

    return m_source->read(data, maxSize);

}

QT_END_NAMESPACE