qbuffer.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QBUFFER_H
#define QBUFFER_H
 
#include <QtCore/qiodevice.h>
#include <QtCore/qbytearray.h>
 
QT_BEGIN_NAMESPACE
 
class QObject;
class QBufferPrivate;
 
class Q_CORE_EXPORT QBuffer : public QIODevice
{
#ifndef QT_NO_QOBJECT
    Q_OBJECT
#endif
 
public:
#ifndef QT_NO_QOBJECT
    explicit QBuffer(QObject *parent = nullptr);
    QBuffer(QByteArray *buf, QObject *parent = nullptr);
#else
    QBuffer();
    explicit QBuffer(QByteArray *buf);
#endif
    ~QBuffer();
 
    QByteArray &buffer();
    const QByteArray &buffer() const;
    void setBuffer(QByteArray *a);
 
    void setData(const QByteArray &data);
#if QT_CORE_REMOVED_SINCE(6, 5) && QT_POINTER_SIZE != 4
    void setData(const char *data, int len) { setData(data, qsizetype(len)); }
#endif
    void setData(const char *data, qsizetype len);
    const QByteArray &data() const;
 
    bool open(OpenMode openMode) override;
 
    void close() override;
    qint64 size() const override;
    qint64 pos() const override;
    bool seek(qint64 off) override;
    bool atEnd() const override;
    bool canReadLine() const override;
 
protected:
#ifndef QT_NO_QOBJECT
    void connectNotify(const QMetaMethod &) override;
    void disconnectNotify(const QMetaMethod &) override;
#endif
    qint64 readData(char *data, qint64 maxlen) override;
    qint64 writeData(const char *data, qint64 len) override;
 
private:
    Q_DECLARE_PRIVATE(QBuffer)
    Q_DISABLE_COPY(QBuffer)
 
    Q_PRIVATE_SLOT(d_func(), void _q_emitSignals())
};
 
QT_END_NAMESPACE
 
#endif // QBUFFER_H