jeanlemotan
50 lines
933 B
C++
50 lines
933 B
C++
#pragma once
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#include "tl/ptr.h"
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#include "fs/IMapSource.h"
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#include "fs/AbsPath.h"
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#include "fs/Api.h"
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namespace fs
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{
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class NativeFilesystem;
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class FS_API FileMapSource final : public IMapSource
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{
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friend class NativeFilesystem;
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public:
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explicit FileMapSource(const AbsPath& filepath);
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FileMapSource(const AbsPath& filepath, uint64_t start, size_t size);
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~FileMapSource() override;
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bool isValid() const;
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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 offset) override;
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void seekRel(int64_t offset) override;
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uint64_t tell() const override;
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uint64_t getSize() const override;
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tl::span<const uint8_t> map(size_t size) 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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uint64_t m_offset = 0;
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mutable tl::optional<Error> m_optLastError;
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struct Impl;
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tl::unique_ptr<Impl> m_impl;
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};
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}
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