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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTEXTCODEC_H
#define QTEXTCODEC_H
#include <QtCore/qstring.h>
#include <QtCore/qlist.h>
QT_REQUIRE_CONFIG(textcodec);
QT_BEGIN_NAMESPACE
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);
#if QT_DEPRECATED_SINCE(5, 0)
QT_DEPRECATED static QTextCodec *codecForTr() { return codecForMib(106); /* Utf8 */ }
#endif
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;
#if QT_STRINGVIEW_LEVEL < 2
bool canEncode(const QString&) const;
#endif
bool canEncode(QStringView) const;
QString toUnicode(const QByteArray&) const;
QString toUnicode(const char* chars) const;
#if QT_STRINGVIEW_LEVEL < 2
QByteArray fromUnicode(const QString& uc) const;
#endif
QByteArray fromUnicode(QStringView 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(nullptr) { 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 = nullptr) const
{ return convertToUnicode(in, length, state); }
QByteArray fromUnicode(const QChar *in, int length, ConverterState *state = nullptr) const
{ return convertFromUnicode(in, length, state); }
QTextDecoder* makeDecoder(ConversionFlags flags = DefaultConversion) const;
QTextEncoder* makeEncoder(ConversionFlags flags = DefaultConversion) 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();
private:
friend struct QCoreGlobalData;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QTextCodec::ConversionFlags)
class Q_CORE_EXPORT QTextEncoder {
Q_DISABLE_COPY(QTextEncoder)
public:
explicit QTextEncoder(const QTextCodec *codec) : c(codec), state() {}
explicit QTextEncoder(const QTextCodec *codec, QTextCodec::ConversionFlags flags);
~QTextEncoder();
#if QT_STRINGVIEW_LEVEL < 2
QByteArray fromUnicode(const QString& str);
#endif
QByteArray fromUnicode(QStringView str);
QByteArray fromUnicode(const QChar *uc, int len);
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() {}
explicit 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;
bool needsMoreData() const;
private:
const QTextCodec *c;
QTextCodec::ConverterState state;
};
QT_END_NAMESPACE
#endif // QTEXTCODEC_H
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