SimpleQtIO.h

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#ifndef SIMPLEQTIO_H
#define SIMPLEQTIO_H
 
#include "common/AbstractSimpleIO.h"
#include <QIODevice>
 
class SimpleQtReader : public AbstractSimpleReader {
private:
    QIODevice *input_;
public:
    SimpleQtReader(QIODevice *input)
        : input_(input)
    {
        if (!input_) {
            throw std::runtime_error("input device is null");
        }
    }
    int read(void *ptr, size_t len)
    {
        if (!input_) {
            throw std::runtime_error("input device is null");
        }
        if (len <= 0) {
            return 0;
        }
        return input_->read(static_cast<char *>(ptr), len);
    }
    int64_t pos() const
    {
        if (!input_) {
            throw std::runtime_error("input device is null");
        }
        return input_->pos();
    }
    void seek(int64_t pos)
    {
        if (!input_) {
            throw std::runtime_error("input device is null");
        }
        input_->seek(pos);
    }
};
 
class SimpleQtWriter : public AbstractSimpleWriter {
private:
    QIODevice *output_;
public:
    SimpleQtWriter(QIODevice *output)
        : output_(output)
    {
        if (!output_) {
            throw std::runtime_error("output device is null");
        }
    }
    int write(void const *ptr, size_t len)
    {
        if (!output_) {
            throw std::runtime_error("output device is null");
        }
        if (len <= 0) {
            return 0;
        }
        return output_->write(static_cast<const char *>(ptr), len);
    }
};
 
#endif // SIMPLEQTIO_H