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diff --git a/src/corelib/codecs/qtextcodec.h b/src/corelib/codecs/qtextcodec.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTEXTCODEC_H
+#define QTEXTCODEC_H
+
+#include <QtCore/qstring.h>
+#include <QtCore/qlist.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+#ifndef QT_NO_TEXTCODEC
+
+class QTextCodec;
+class QIODevice;
+
+class QTextDecoder;
+class QTextEncoder;
+
+class Q_CORE_EXPORT QTextCodec
+{
+    Q_DISABLE_COPY(QTextCodec)
+public:
+    static QTextCodec* codecForName(const QByteArray &name);
+    static QTextCodec* codecForName(const char *name) { return codecForName(QByteArray(name)); }
+    static QTextCodec* codecForMib(int mib);
+
+    static QList<QByteArray> availableCodecs();
+    static QList<int> availableMibs();
+
+    static QTextCodec* codecForLocale();
+    static void setCodecForLocale(QTextCodec *c);
+
+    static QTextCodec* codecForTr();
+    static void setCodecForTr(QTextCodec *c);
+
+    static QTextCodec* codecForCStrings();
+    static void setCodecForCStrings(QTextCodec *c);
+
+    static QTextCodec *codecForHtml(const QByteArray &ba);
+    static QTextCodec *codecForHtml(const QByteArray &ba, QTextCodec *defaultCodec);
+
+    QTextDecoder* makeDecoder() const;
+    QTextEncoder* makeEncoder() const;
+
+    bool canEncode(QChar) const;
+    bool canEncode(const QString&) const;
+
+    QString toUnicode(const QByteArray&) const;
+    QString toUnicode(const char* chars) const;
+    QByteArray fromUnicode(const QString& uc) const;
+    enum ConversionFlag {
+        DefaultConversion,
+        ConvertInvalidToNull = 0x80000000,
+        IgnoreHeader = 0x1,
+        FreeFunction = 0x2
+    };
+    Q_DECLARE_FLAGS(ConversionFlags, ConversionFlag)
+
+    struct Q_CORE_EXPORT ConverterState {
+        ConverterState(ConversionFlags f = DefaultConversion)
+            : flags(f), remainingChars(0), invalidChars(0), d(0) { state_data[0] = state_data[1] = state_data[2] = 0; }
+        ~ConverterState();
+        ConversionFlags flags;
+        int remainingChars;
+        int invalidChars;
+        uint state_data[3];
+        void *d;
+    private:
+        Q_DISABLE_COPY(ConverterState)
+    };
+
+    QString toUnicode(const char *in, int length, ConverterState *state = 0) const
+        { return convertToUnicode(in, length, state); }
+    QByteArray fromUnicode(const QChar *in, int length, ConverterState *state = 0) const
+        { return convertFromUnicode(in, length, state); }
+
+    virtual QByteArray name() const = 0;
+    virtual QList<QByteArray> aliases() const;
+    virtual int mibEnum() const = 0;
+
+protected:
+    virtual QString convertToUnicode(const char *in, int length, ConverterState *state) const = 0;
+    virtual QByteArray convertFromUnicode(const QChar *in, int length, ConverterState *state) const = 0;
+
+    QTextCodec();
+    virtual ~QTextCodec();
+
+public:
+#ifdef QT3_SUPPORT
+    static QT3_SUPPORT QTextCodec* codecForContent(const char*, int) { return 0; }
+    static QT3_SUPPORT const char* locale();
+    static QT3_SUPPORT QTextCodec* codecForName(const char* hint, int) { return codecForName(QByteArray(hint)); }
+    QT3_SUPPORT QByteArray fromUnicode(const QString& uc, int& lenInOut) const;
+    QT3_SUPPORT QString toUnicode(const QByteArray&, int len) const;
+    QT3_SUPPORT QByteArray mimeName() const { return name(); }
+    static QT3_SUPPORT QTextCodec *codecForIndex(int i) { return codecForName(availableCodecs().value(i)); }
+#endif
+
+private:
+    friend class QTextCodecCleanup;
+    static QTextCodec *cftr;
+};
+Q_DECLARE_OPERATORS_FOR_FLAGS(QTextCodec::ConversionFlags)
+
+inline QTextCodec* QTextCodec::codecForTr() { return cftr; }
+inline void QTextCodec::setCodecForTr(QTextCodec *c) { cftr = c; }
+inline QTextCodec* QTextCodec::codecForCStrings() { return QString::codecForCStrings; }
+inline void QTextCodec::setCodecForCStrings(QTextCodec *c) { QString::codecForCStrings = c; }
+
+class Q_CORE_EXPORT QTextEncoder {
+    Q_DISABLE_COPY(QTextEncoder)
+public:
+    explicit QTextEncoder(const QTextCodec *codec) : c(codec), state() {}
+    ~QTextEncoder();
+    QByteArray fromUnicode(const QString& str);
+    QByteArray fromUnicode(const QChar *uc, int len);
+#ifdef QT3_SUPPORT
+    QByteArray fromUnicode(const QString& uc, int& lenInOut);
+#endif
+    bool hasFailure() const;
+private:
+    const QTextCodec *c;
+    QTextCodec::ConverterState state;
+};
+
+class Q_CORE_EXPORT QTextDecoder {
+    Q_DISABLE_COPY(QTextDecoder)
+public:
+    explicit QTextDecoder(const QTextCodec *codec) : c(codec), state() {}
+    ~QTextDecoder();
+    QString toUnicode(const char* chars, int len);
+    QString toUnicode(const QByteArray &ba);
+    void toUnicode(QString *target, const char *chars, int len);
+    bool hasFailure() const;
+private:
+    const QTextCodec *c;
+    QTextCodec::ConverterState state;
+};
+
+#endif // QT_NO_TEXTCODEC
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QTEXTCODEC_H