qtextstream_p.h - mozsearch

Enable keyboard shortcuts

// Copyright (C) 2016 The Qt Company Ltd.

// Copyright (C) 2016 Intel Corporation.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:header-decls-only

#ifndef QTEXTSTREAM_P_H

#define QTEXTSTREAM_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtCore/private/qglobal_p.h>

#include <QtCore/qstringconverter.h>

#include <QtCore/qiodevice.h>

#include <QtCore/qlocale.h>

#include "qtextstream.h"

QT_BEGIN_NAMESPACE

class QTextStreamPrivate

    Q_DECLARE_PUBLIC(QTextStream)

public:

    // streaming parameters

    class Params

    public:

        void reset();

        // As for QString, QLocale functions taking these: the values of

        // precision, base and width can't sensibly need even eight bits, so

        // there's no sense expanding beyond int.

        int realNumberPrecision;

        int integerBase;

        int fieldWidth;

        QChar padChar;

        QTextStream::FieldAlignment fieldAlignment;

        QTextStream::RealNumberNotation realNumberNotation;

        QTextStream::NumberFlags numberFlags;

};

    QTextStreamPrivate(QTextStream *q_ptr);

    ~QTextStreamPrivate();

    void reset();

    inline void setupDevice(QIODevice *device);

    inline void disconnectFromDevice();

    // device

    QIODevice *device;

#ifndef QT_NO_QOBJECT

    QMetaObject::Connection aboutToCloseConnection;

#endif

    // string

    QString *string;

    qsizetype stringOffset;

    QIODevice::OpenMode stringOpenMode;

    QStringConverter::Encoding encoding = QStringConverter::Utf8;

    QStringEncoder fromUtf16;

    QStringDecoder toUtf16;

    QStringDecoder savedToUtf16;

    QString writeBuffer;

    QString readBuffer;

    qsizetype readBufferOffset;

    qsizetype readConverterSavedStateOffset; //the offset between readBufferStartDevicePos and that start of the buffer

    qint64 readBufferStartDevicePos;

    Params params;

    // status

    QTextStream::Status status;

    QLocale locale;

    QTextStream *q_ptr;

    qsizetype lastTokenSize;

    bool deleteDevice;

    bool autoDetectUnicode;

    bool hasWrittenData = false;

    bool generateBOM = false;

    // i/o

    enum TokenDelimiter {

        Space,

        NotSpace,

        EndOfLine

};

    QString read(qsizetype maxlen);

    bool scan(const QChar **ptr, qsizetype *tokenLength,

              qsizetype maxlen, TokenDelimiter delimiter);

    inline const QChar *readPtr() const;

    inline void consumeLastToken();

    inline void consume(qsizetype nchars);

    void saveConverterState(qint64 newPos);

    void restoreToSavedConverterState();

    // Return value type for getNumber()

    enum NumberParsingStatus {

        npsOk,

        npsMissingDigit,

        npsInvalidPrefix

};

    inline bool getChar(QChar *ch);

    inline void ungetChar(QChar ch);

    NumberParsingStatus getNumber(qulonglong *l);

    bool getReal(double *f);

    void write(QStringView data);

    void write(QChar ch);

    void write(QLatin1StringView data);

    void writePadding(qsizetype len);

    enum class PutStringMode : bool { String, Number };

    void putString(QStringView string, PutStringMode = PutStringMode::String);

    void putString(QLatin1StringView data, PutStringMode = PutStringMode::String);

    void putString(QUtf8StringView data, PutStringMode = PutStringMode::String);

    inline void putChar(QChar ch);

    void putNumber(qulonglong number, bool negative);

    struct PaddingResult {

        qsizetype left, right;

};

    PaddingResult padding(qsizetype len) const;

    // buffers

    bool fillReadBuffer(qint64 maxBytes = -1);

    void resetReadBuffer();

    void flushWriteBuffer();

private:

    template <typename Appendable>

    void writeImpl(Appendable data);

    template <typename StringView>

    void putStringImpl(StringView view, PutStringMode mode);

};

QT_END_NAMESPACE

#endif // QTEXTSTREAM_P_H