DeferredFileWriter.h

#pragma once
 
#include <Foundation/IO/FileSystem/FileWriter.h>
#include <Foundation/IO/MemoryStream.h>
 
class PL_FOUNDATION_DLL plDeferredFileWriter : public plStreamWriter
{
  PL_DISALLOW_COPY_AND_ASSIGN(plDeferredFileWriter);
 
public:
  plDeferredFileWriter();
 
  ~plDeferredFileWriter() { Close().IgnoreResult(); }
 
  void SetOutput(plStringView sFileToWriteTo, bool bOnlyWriteIfDifferent = false);         // [tested]
 
  virtual plResult WriteBytes(const void* pWriteBuffer, plUInt64 uiBytesToWrite) override; // [tested]
 
  plResult Close(bool* out_pWasWrittenTo = nullptr); // [tested]
 
  void Discard(); // [tested]
 
private:
  bool m_bOnlyWriteIfDifferent = false;
  bool m_bAlreadyClosed = false;
  plString m_sOutputFile;
  plDefaultMemoryStreamStorage m_Storage;
  plMemoryStreamWriter m_Writer;
};