1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

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

     6 **

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

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

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

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

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

    30 **

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    36 **

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include <QtDebug>

    43 

    44 #include "qpatternistlocale_p.h"

    45 

    46 #include "qiodevicedelegate_p.h"

    47 

    48 QT_BEGIN_NAMESPACE

    49 

    50 using namespace QPatternist;

    51 

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

    53 {

    54     Q_ASSERT(m_source);

    55 

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

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

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

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

    60 

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

    62      * instead for a minor but significant reason. */

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

    64 

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

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

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

    68     if(m_source->isSequential())

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

    70     else

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

    72 

    73     setOpenMode(QIODevice::ReadOnly);

    74 

    75     /* Set up the timeout timer. */

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

    77 

    78     m_timeout.setSingleShot(true);

    79     m_timeout.start(Timeout);

    80 }

    81 

    82 void QIODeviceDelegate::networkTimeout()

    83 {

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

    85     error(QNetworkReply::TimeoutError);

    86 }

    87 

    88 void QIODeviceDelegate::abort()

    89 {

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

    91 }

    92 

    93 bool QIODeviceDelegate::atEnd() const

    94 {

    95     return m_source->atEnd();

    96 }

    97 

    98 qint64 QIODeviceDelegate::bytesAvailable() const

    99 {

   100     return m_source->bytesAvailable();

   101 }

   102 

   103 qint64 QIODeviceDelegate::bytesToWrite() const

   104 {

   105     return m_source->bytesToWrite();

   106 }

   107 

   108 bool QIODeviceDelegate::canReadLine() const

   109 {

   110     return m_source->canReadLine();

   111 }

   112 

   113 void QIODeviceDelegate::close()

   114 {

   115     return m_source->close();

   116 }

   117 

   118 bool QIODeviceDelegate::isSequential() const

   119 {

   120     return m_source->isSequential();

   121 }

   122 

   123 bool QIODeviceDelegate::open(OpenMode mode)

   124 {

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

   126     setOpenMode(m_source->openMode());

   127     return success;

   128 }

   129 

   130 qint64 QIODeviceDelegate::pos() const

   131 {

   132     return m_source->pos();

   133 }

   134 

   135 bool QIODeviceDelegate::reset()

   136 {

   137     return m_source->reset();

   138 }

   139 

   140 bool QIODeviceDelegate::seek(qint64 pos)

   141 {

   142     return m_source->seek(pos);

   143 }

   144 

   145 qint64 QIODeviceDelegate::size() const

   146 {

   147     return m_source->size();

   148 }

   149 

   150 bool QIODeviceDelegate::waitForBytesWritten(int msecs)

   151 {

   152     return m_source->waitForBytesWritten(msecs);

   153 }

   154 

   155 bool QIODeviceDelegate::waitForReadyRead(int msecs)

   156 {

   157     return m_source->waitForReadyRead(msecs);

   158 }

   159 

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

   161 {

   162     return m_source->read(data, maxSize);

   163 }

   164 

   165 QT_END_NAMESPACE

   166