Add Qt3 development HEAD version

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diff --git a/src/codecs/qtextcodecplugin.cpp b/src/codecs/qtextcodecplugin.cpp
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+/****************************************************************************
+**
+** Implementation of QTextCodecPlugin class
+**
+** Created : 010920
+**
+** Copyright (C) 2001-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the tools module of the Qt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free Qt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at [email protected].
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.QPL
+** included in the packaging of this file.  Licensees holding valid Qt
+** Commercial licenses may use this file in accordance with the Qt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#include "qtextcodecplugin.h"
+#ifndef QT_NO_TEXTCODECPLUGIN
+#include "qtextcodecinterface_p.h"
+
+/*!
+    \class QTextCodecPlugin qtextcodecplugin.h
+    \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(),
+    createForName(), mibEnums() and createForMib(), and exporting the
+    class with the \c Q_EXPORT_PLUGIN macro. See the \link
+    plugins-howto.html Qt Plugins documentation \endlink for details.
+
+    See the \link http://www.iana.org/assignments/character-sets IANA
+    character-sets encoding file\endlink for more information on mime
+    names and mib enums.
+*/
+
+/*!
+    \fn QStringList QTextCodecPlugin::names() const
+
+    Returns the list of mime names supported by this plugin.
+
+    \sa createForName()
+*/
+
+/*!
+    \fn QTextCodec *QTextCodecPlugin::createForName( const QString &name );
+
+    Creates a QTextCodec object for the codec called \a name.
+
+    \sa names()
+*/
+
+
+/*!
+    \fn QValueList<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 \link
+    ftp://ftp.isi.edu/in-notes/iana/assignments/character-sets the
+    IANA character-sets encoding file\endlink for more information)
+
+    \sa mibEnums()
+*/
+
+
+
+class QTextCodecPluginPrivate : public QTextCodecFactoryInterface
+{
+public:
+    QTextCodecPluginPrivate( QTextCodecPlugin *p )
+	: plugin( p )
+    {
+    }
+    virtual ~QTextCodecPluginPrivate();
+
+    QRESULT queryInterface( const QUuid &iid, QUnknownInterface **iface );
+    Q_REFCOUNT;
+
+    QStringList featureList() const;
+    QTextCodec *createForMib( int mib );
+    QTextCodec *createForName( const QString &name );
+
+private:
+    QTextCodecPlugin *plugin;
+};
+
+QTextCodecPluginPrivate::~QTextCodecPluginPrivate()
+{
+    delete plugin;
+}
+
+QRESULT QTextCodecPluginPrivate::queryInterface( const QUuid &iid, QUnknownInterface **iface )
+{
+    *iface = 0;
+
+    if ( iid == IID_QUnknown )
+	*iface = this;
+    else if ( iid == IID_QFeatureList )
+	*iface = this;
+    else if ( iid == IID_QTextCodecFactory )
+	*iface = this;
+    else
+	return QE_NOINTERFACE;
+
+    (*iface)->addRef();
+    return QS_OK;
+}
+
+QStringList QTextCodecPluginPrivate::featureList() const
+{
+    QStringList keys = plugin->names();
+    QValueList<int> mibs = plugin->mibEnums();
+    for ( QValueList<int>::Iterator it = mibs.begin(); it != mibs.end(); ++it )
+	keys += QString("MIB-%1").arg( *it );
+    return keys;
+}
+
+QTextCodec *QTextCodecPluginPrivate::createForMib( int mib )
+{
+    return plugin->createForMib( mib );
+}
+
+QTextCodec *QTextCodecPluginPrivate::createForName( const QString &name )
+{
+    return plugin->createForName( name );
+}
+
+
+/*!
+    Constructs a text codec plugin. This is invoked automatically by
+    the \c Q_EXPORT_PLUGIN macro.
+*/
+QTextCodecPlugin::QTextCodecPlugin()
+    : QGPlugin( d = new QTextCodecPluginPrivate( this ) )
+{
+}
+
+/*!
+    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()
+{
+}
+
+#endif // QT_NO_TEXTCODECPLUGIN