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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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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);
static QTextCodec *codecForUtfText(const QByteArray &ba);
static QTextCodec *codecForUtfText(const QByteArray &ba, QTextCodec *defaultCodec);
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); }
// ### Qt 5: merge these functions.
QTextDecoder* makeDecoder() const;
QTextDecoder* makeDecoder(ConversionFlags flags) const;
QTextEncoder* makeEncoder() const;
QTextEncoder* makeEncoder(ConversionFlags flags) const;
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;
static bool validCodecs();
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QTextCodec::ConversionFlags)
inline QTextCodec* QTextCodec::codecForTr() { return validCodecs() ? cftr : 0; }
inline void QTextCodec::setCodecForTr(QTextCodec *c) { cftr = c; }
inline QTextCodec* QTextCodec::codecForCStrings() { return validCodecs() ? QString::codecForCStrings : 0; }
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(const QTextCodec *codec, QTextCodec::ConversionFlags flags);
~QTextEncoder();
QByteArray fromUnicode(const QString& str);
QByteArray fromUnicode(const QChar *uc, int len);
#ifdef QT3_SUPPORT
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(const QTextCodec *codec, QTextCodec::ConversionFlags flags);
~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
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