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diff --git a/src/corelib/codecs/qtextcodecplugin.cpp b/src/corelib/codecs/qtextcodecplugin.cpp
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+++ b/src/corelib/codecs/qtextcodecplugin.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore 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 "qtextcodecplugin.h"
+#include "qstringlist.h"
+
+#ifndef QT_NO_TEXTCODECPLUGIN
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QTextCodecPlugin
+    \brief The QTextCodecPlugin class provides an abstract base for custom QTextCodec plugins.
+    \reentrant
+    \ingroup plugins
+
+    The text codec plugin is a simple plugin interface that makes it
+    easy to create custom text codecs that can be loaded dynamically
+    into applications.
+
+    Writing a text codec plugin is achieved by subclassing this base
+    class, reimplementing the pure virtual functions names(),
+    aliases(), createForName(), mibEnums() and createForMib(), and
+    exporting the class with the Q_EXPORT_PLUGIN2() macro. See \l{How
+    to Create Qt Plugins} for details.
+
+    See the \l{http://www.iana.org/assignments/character-sets}{IANA
+    character-sets encoding file} for more information on mime
+    names and mib enums.
+*/
+
+/*!
+    \fn QStringList QTextCodecPlugin::names() const
+
+    Returns the list of MIME names supported by this plugin.
+
+    If a codec has several names, the extra names are returned by aliases().
+
+    \sa createForName(), aliases()
+*/
+
+/*!
+    \fn QList<QByteArray> QTextCodecPlugin::aliases() const
+
+    Returns the list of aliases supported by this plugin.
+*/
+
+/*!
+    \fn QTextCodec *QTextCodecPlugin::createForName(const QByteArray &name)
+
+    Creates a QTextCodec object for the codec called \a name. The \a name
+    must come from the list of encodings returned by names(). Encoding
+    names are case sensitive.
+
+    Example:
+
+    \snippet doc/src/snippets/code/src_corelib_codecs_qtextcodecplugin.cpp 0
+
+    \sa names()
+*/
+
+
+/*!
+    \fn QList<int> QTextCodecPlugin::mibEnums() const
+
+    Returns the list of mib enums supported by this plugin.
+
+    \sa createForMib()
+*/
+
+/*!
+    \fn QTextCodec *QTextCodecPlugin::createForMib(int mib);
+
+    Creates a QTextCodec object for the mib enum \a mib.
+
+    See \l{http://www.iana.org/assignments/character-sets}{the
+    IANA character-sets encoding file} for more information.
+
+    \sa mibEnums()
+*/
+
+/*!
+    Constructs a text codec plugin with the given \a parent. This is
+    invoked automatically by the Q_EXPORT_PLUGIN2() macro.
+*/
+QTextCodecPlugin::QTextCodecPlugin(QObject *parent)
+    : QObject(parent)
+{
+}
+
+/*!
+    Destroys the text codec plugin.
+
+    You never have to call this explicitly. Qt destroys a plugin
+    automatically when it is no longer used.
+*/
+QTextCodecPlugin::~QTextCodecPlugin()
+{
+}
+
+QStringList QTextCodecPlugin::keys() const
+{
+    QStringList keys;
+    QList<QByteArray> list = names();
+    list += aliases();
+    for (int i = 0; i < list.size(); ++i)
+        keys += QString::fromLatin1(list.at(i));
+    QList<int> mibs = mibEnums();
+    for (int i = 0; i < mibs.count(); ++i)
+        keys += QLatin1String("MIB: ") + QString::number(mibs.at(i));
+    return keys;
+}
+
+QTextCodec *QTextCodecPlugin::create(const QString &name)
+{
+    if (name.startsWith(QLatin1String("MIB: ")))
+        return createForMib(name.mid(4).toInt());
+    return createForName(name.toLatin1());
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_TEXTCODECPLUGIN