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04bee896be
cppkore uses string/wstring as StringBase while we use std::string/std::wstring as string/wstring. Changed all types in cppkore to String/WString instead.
79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
#pragma once
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#include <cstdint>
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#include <memory>
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#include "Stream.h"
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#include "StringBase.h"
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#include "FileMode.h"
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#include "FileAccess.h"
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#include "FileShare.h"
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namespace IO
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{
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// FileStream supports reading and writing files to the disk
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class FileStream : public Stream
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{
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public:
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FileStream(const String& Path, FileMode Mode);
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FileStream(const String& Path, FileMode Mode, FileAccess Access);
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FileStream(const String& Path, FileMode Mode, FileAccess Access, FileShare Share);
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FileStream(const String& Path, FileMode Mode, FileAccess Access, FileShare Share, uint32_t BufferSize);
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virtual ~FileStream();
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// Implement Getters and Setters
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virtual bool CanRead();
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virtual bool CanWrite();
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virtual bool CanSeek();
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virtual bool GetIsEndOfFile();
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virtual uint64_t GetLength();
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virtual uint64_t GetPosition();
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virtual void SetLength(uint64_t Length);
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virtual void SetPosition(uint64_t Position);
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// Implement functions
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virtual void Close();
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virtual void Flush();
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virtual void Seek(uint64_t Offset, SeekOrigin Origin);
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virtual uint64_t Read(uint8_t* Buffer, uint64_t Offset, uint64_t Count);
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virtual uint64_t Read(uint8_t* Buffer, uint64_t Offset, uint64_t Count, uint64_t Position);
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virtual void Write(uint8_t* Buffer, uint64_t Offset, uint64_t Count);
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virtual void Write(uint8_t* Buffer, uint64_t Offset, uint64_t Count, uint64_t Position);
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private:
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// FileMode flags cached
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bool _CanRead;
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bool _CanWrite;
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bool _CanSeek;
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// Internal buffer
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std::unique_ptr<uint8_t[]> _Buffer;
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uint32_t _BufferSize;
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// Internal cached positions
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int32_t _ReadLength;
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int32_t _ReadPosition;
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int32_t _WritePosition;
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int64_t _Position;
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// The file handle
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HANDLE _Handle;
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// Internal routines to flush the buffers
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void FlushWrite();
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void FlushRead();
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// Internal routine to verify the handle position
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void VerifyOSHandlePosition();
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// Internal routines for reading and writing
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void WriteCore(uint8_t* Buffer, uint64_t Offset, uint64_t Count);
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uint64_t ReadCore(uint8_t* Buffer, uint64_t Offset, uint64_t Count);
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// Sets up the FileStream
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void SetupStream(const String& Path, FileMode Mode, FileAccess Access, FileShare Share, uint32_t BufferSize);
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// Internal buffer size default 4k
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constexpr static uint32_t DefaultBufferSize = 4096;
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};
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} |