jeanlemotan
40 lines
789 B
C++
40 lines
789 B
C++
#pragma once
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#include "ISource.h"
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#include <tl/ptr.h>
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#include "fs/Api.h"
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namespace fs
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{
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class FS_API SourceView final : public ISource
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{
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public:
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SourceView(tl::unique_ref<ISource>&& i_srcSource, uint64_t i_offset, uint64_t i_size);
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~SourceView() override = default;
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tl::optional<Error> getLastError() const override;
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size_t read(tl::span<uint8_t> data) override;
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void seekBeg(uint64_t i_offset) override;
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void seekRel(int64_t i_offset) override;
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uint64_t tell() const override;
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uint64_t getSize() const override;
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bool isEOS() const override;
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size_t getPreferredBufferSize() const override;
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private:
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tl::unique_ref<ISource> m_srcSource;
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mutable tl::optional<Error> m_optLastError;
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uint64_t m_viewOffset = 0;
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uint64_t m_viewSize = 0;
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uint64_t m_offset = 0;
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};
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}
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