48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: FileSeekableReader.hpp
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Date: 2021-6-10
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Author: Reece
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***/
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#pragma once
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namespace Aurora::IO::FS
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{
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struct FileSeekableReader : public ISeekingReader
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{
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AU_NO_COPY_NO_MOVE(FileSeekableReader)
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inline FileSeekableReader() {}
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inline ~FileSeekableReader() {}
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template<typename... T>
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bool OpenFile(T... args)
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{
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stream_ = OpenReadUnique(args...);
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return stream_ != nullptr;
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}
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virtual EStreamError IsOpen() override
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{
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return stream_ ? EStreamError::eErrorNone : EStreamError::eErrorStreamInterrupted;
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}
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virtual EStreamError ArbitraryRead(AuUInt offset, const Memory::MemoryViewStreamWrite ¶mters) override
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{
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if (!stream_) return EStreamError::eErrorStreamNotOpen;
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if (!stream_->SetOffset(offset)) return EStreamError::eErrorEndOfStream;
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if (!stream_->Read(paramters)) return EStreamError::eErrorStreamInterrupted;
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if (paramters.outVariable== 0) return EStreamError::eErrorEndOfStream;
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return EStreamError::eErrorNone;
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}
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virtual void Close() override
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{
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stream_.reset();
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}
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private:
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OpenReadUnique_t stream_{};
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};
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} |