qtextcodec.h
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上传日期:2022-06-22
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- /****************************************************************************
- **
- ** Copyright (C) 2008 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.
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- ** accordance with the Qt Commercial License Agreement provided with the
- ** Software or, alternatively, in accordance with the terms contained in
- ** a written agreement between you and Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, 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 file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
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- #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
- };
- Q_DECLARE_FLAGS(ConversionFlags, ConversionFlag)
- struct ConverterState {
- ConverterState(ConversionFlags f = DefaultConversion)
- : flags(f), remainingChars(0), invalidChars(0), d(0) { state_data[0] = state_data[1] = state_data[2] = 0; }
- ~ConverterState() { if (d) qFree(d); }
- 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().at(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
- 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