KSG-Framework/Reader.h

#pragma once

#include "ReferenceCounter.h"

namespace Framework
{
    class Text;

    class StreamReader
    {
    public:
        //! Reads from the resource
        //! \param bytes An array to be filled with bytes from the resource
        //! \param len How many bytes should be read from the resource
        virtual void read(char* bytes, int len) = 0;
        //! Reads the next line of the resource
        //! \return The read line as Text with line break
        virtual Text* readLine() = 0;
        //! Checks whether the resource has been fully read
        //!  return 1 if the resource has been fully read. 0 otherwise
        virtual bool isEnd() const = 0;
    };

    class Reader : public StreamReader
    {
    public:
        //! Sets the position of the byte to be read next
        //! \param pos The index of the byte
        //! \param ende 1 if the index counts from the end of the resource. 0 if
        //! the index counts from the beginning of the resource
        virtual void setLPosition(__int64 pos, bool ende) = 0;
        //! Returns the index of the byte from the resource that would be read next
        //! return -1 if an error occurred. Otherwise the position of the read pointer
        virtual __int64 getLPosition() const = 0;
        //! Returns the number of bytes to be read
        virtual __int64 getSize() const = 0;
    };

    class ByteArrayReader : public Reader,
                            public ReferenceCounter
    {
    private:
        int length;
        const char* buffer;
        bool deleteBuffer;
        int position;

    public:
        //! \param buffer The buffer to be read
        //! \param length The length of the buffer
        //! \param deleteBuffer true if the buffer should be automatically deleted
        //! with delete[]
        DLLEXPORT ByteArrayReader(
            const char* buffer, int length, bool deleteBuffer);
        DLLEXPORT ~ByteArrayReader();
        //! Reads from the resource
        //! \param bytes An array to be filled with bytes from the resource
        //! \param len How many bytes should be read from the resource
        DLLEXPORT void read(char* bytes, int len) override;
        //! Reads the next line of the resource
        //! \return The read line as Text with line break
        DLLEXPORT Text* readLine() override;
        //! Checks whether the resource has been fully read
        //!  return 1 if the resource has been fully read. 0 otherwise
        DLLEXPORT bool isEnd() const override;
        //! Sets the position of the byte to be read next
        //! \param pos The index of the byte
        //! \param ende 1 if the index counts from the end of the resource. 0 if
        //! the index counts from the beginning of the resource
        DLLEXPORT void setLPosition(__int64 pos, bool ende) override;
        //! Returns the index of the byte from the resource that would be read next
        //! return -1 if an error occurred. Otherwise the position of the read pointer
        DLLEXPORT __int64 getLPosition() const override;
        //! Returns the number of bytes to be read
        DLLEXPORT __int64 getSize() const override;
    };
} // namespace Framework