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#ifndef QTIOCOMPRESSOR_H
#define QTIOCOMPRESSOR_H

#include <QIODevice>

class QtIOCompressorPrivate;
class QtIOCompressor : public QIODevice
{
Q_OBJECT
public:
enum StreamFormat { ZlibFormat, GzipFormat, RawZipFormat };
    QtIOCompressor(QIODevice *device, int compressionLevel = 6, int bufferSize = 65500);
    ~QtIOCompressor() override;
    void setStreamFormat(StreamFormat format);
    StreamFormat streamFormat() const;
    static bool isGzipSupported();
    bool isSequential() const override;
    bool open(OpenMode mode) override;
    void close() override;
    void flush();
    qint64 bytesAvailable() const override;

protected:
    qint64 readData(char* data, qint64 maxSize) override;
    qint64 writeData(const char* data, qint64 maxSize) override;

private:
    static bool checkGzipSupport(const char * const versionString);
    QtIOCompressorPrivate *d_ptr;
    Q_DECLARE_PRIVATE(QtIOCompressor)
    Q_DISABLE_COPY(QtIOCompressor)
};

#endif
