hiodev.h

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#ifndef INCLUDED_HWPFILTER_SOURCE_HIODEV_H
#define INCLUDED_HWPFILTER_SOURCE_HIODEV_H
 
#include <sal/config.h>
 
#include <stdio.h>
 
#include <memory>
#include <sal/types.h>
 
#include "hwplib.h"
class DLLEXPORT HIODev
{
    protected:
        bool compressed;
        virtual void init();
    public:
        HIODev();
        virtual ~HIODev();
 
        virtual bool open() = 0;
        virtual void flush() = 0;
        virtual bool state() const = 0;
/* gzip routine wrapper */
        virtual bool setCompressed( bool ) = 0;
 
        virtual bool read1b(unsigned char &out) = 0;
        virtual bool read1b(char &out) = 0;
        virtual bool read2b(unsigned short &out) = 0;
        virtual bool read4b(unsigned int &out) = 0;
        virtual bool read4b(int &out) = 0;
        virtual size_t readBlock( void *ptr, size_t size ) = 0;
        virtual size_t skipBlock( size_t size ) = 0;
 
        size_t read2b( void *ptr, size_t nmemb );
        size_t read4b( void *ptr, size_t nmemb );
};
 
struct gz_stream;
 
/* File input and output devices */
 
class HStreamIODev final: public HIODev
{
    private:
/* zlib으로 압축을 풀기 위한 자료 구조 */
        std::unique_ptr<HStream> _stream;
        gz_stream *_gzfp;
    public:
        explicit HStreamIODev(std::unique_ptr<HStream> stream);
        virtual ~HStreamIODev() override;
        virtual bool open() override;
        virtual void flush() override;
        virtual bool state() const override;
        virtual bool setCompressed( bool ) override;
        virtual bool read1b(unsigned char &out) override;
        virtual bool read1b(char &out) override;
        using HIODev::read2b;
        virtual bool read2b(unsigned short &out) override;
        using HIODev::read4b;
        virtual bool read4b(unsigned int &out) override;
        virtual bool read4b(int &out) override;
        virtual size_t readBlock( void *ptr, size_t size ) override;
        virtual size_t skipBlock( size_t size ) override;
    private:
        virtual void init() override;
};
 
/* Memory, input and output devices */
class HMemIODev final: public HIODev
{
    uchar *ptr;
    size_t pos, length;
    public:
        HMemIODev(char *s, size_t len);
        virtual ~HMemIODev() override;
 
        virtual bool open() override;
        virtual void flush() override;
        virtual bool state() const override;
/* gzip routine wrapper */
        virtual bool setCompressed( bool ) override;
        virtual bool read1b(unsigned char &out) override;
        virtual bool read1b(char &out) override;
        using HIODev::read2b;
        virtual bool read2b(unsigned short &out) override;
        using HIODev::read4b;
        virtual bool read4b(unsigned int &out) override;
        virtual bool read4b(int &out) override;
        virtual size_t readBlock( void *ptr, size_t size ) override;
        virtual size_t skipBlock( size_t size ) override;
    private:
        virtual void init() override;
};
#endif // INCLUDED_HWPFILTER_SOURCE_HIODEV_H
 
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