58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: BlobSeekableReader.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::Buffered
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{
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struct BlobSeekableReader : ISeekingReader
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{
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AU_NO_COPY_NO_MOVE(BlobSeekableReader)
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inline BlobSeekableReader(const AuSPtr<Memory::ByteBuffer> &buffer) : buffer_(buffer) {}
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inline BlobSeekableReader(Memory::ByteBuffer &&buffer) : buffer_(AuMakeShared<Memory::ByteBuffer>(AuMove(buffer))) {}
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inline BlobSeekableReader(const Memory::ByteBuffer &buffer) : buffer_(AuMakeShared<Memory::ByteBuffer>(buffer)) {}
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inline BlobSeekableReader() {}
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inline ~BlobSeekableReader(){}
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inline virtual EStreamError IsOpen() override
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{
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if (!this->buffer_)
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{
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return EStreamError::eErrorStreamNotOpen;
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}
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return EStreamError::eErrorNone;
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}
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inline virtual EStreamError ArbitraryRead(AuUInt offset, const Memory::MemoryViewStreamWrite ¶meters) override
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{
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if (!this->buffer_)
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{
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return EStreamError::eErrorStreamNotOpen;
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}
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if (this->buffer_->empty())
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{
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return EStreamError::eErrorEndOfStream;
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}
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this->buffer_->readPtr = this->buffer_->base + offset;
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parameters.outVariable = this->buffer_->Read(parameters.ptr, parameters.length);
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return parameters.outVariable == 0 ? EStreamError::eErrorEndOfStream : EStreamError::eErrorNone;
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}
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inline virtual void Close() override
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{
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AuResetMember(this->buffer_);
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}
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private:
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AuSPtr<Memory::ByteBuffer> buffer_;
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};
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} |