AuroraRuntime/Source/IO/IOAdapterSeeking.cpp

/***
    Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: IOAdapterSeeking.cpp
    Date: 2022-6-6
    Author: Reece
***/
#include <Source/RuntimeInternal.hpp>
#include <Aurora/IO/IOExperimental.hpp>
#include "IOAdapterSeeking.hpp"

namespace Aurora::IO
{
    SeekingReader::SeekingReader(const AuSPtr<ISeekingReader> &reader) : reader(reader)
    {

    }

    EStreamError SeekingReader::IsOpen()
    {
        return this->reader ? this->reader->IsOpen() : EStreamError::eErrorStreamNotOpen;
    }

    EStreamError SeekingReader::Read(const Memory::MemoryViewStreamWrite &parameters)
    {
        auto error = this->reader ? this->reader->ArbitraryRead(this->index, parameters) : EStreamError::eErrorStreamNotOpen;
        if (error == EStreamError::eErrorNone)
        {
            this->index += parameters.outVariable;
        }
        return error;
    }

    void SeekingReader::Close()
    {
        if (this->reader)
        {
            this->reader->Close();
        }
    }

    AUKN_SYM AuSPtr<IStreamReader>  NewSeekingReadAdapter(const AuSPtr<ISeekingReader> &reader)
    {
        return AuMakeShared<SeekingReader>(reader);
    }
}