MemoryReader.h

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#ifndef MEMORYREADER_H
#define MEMORYREADER_H
 
#include <QBuffer>
#include <QIODevice>
 
class MemoryReader : public QIODevice {
private:
    char const *begin;
    char const *end;
public:
    MemoryReader(char const *ptr = nullptr, qint64 len = 0);
    void setData(char const *ptr, qint64 len);
    bool isSequential() const override;
    bool open(OpenMode mode) override;
    qint64 pos() const override;
    qint64 size() const override;
    bool seek(qint64 pos) override;
    bool atEnd() const override;
    bool reset() override;
    qint64 bytesToWrite() const override;
    bool canReadLine() const override;
    bool waitForReadyRead(int msecs) override;
    bool waitForBytesWritten(int msecs) override;
protected:
    qint64 readData(char *data, qint64 maxlen) override;
    qint64 writeData(char const *data, qint64 len) override;
};
 
#endif // MEMORYREADER_H