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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkFileResourceStream_h
#define vtkFileResourceStream_h
#include "vtkIOCoreModule.h" // For export macro
#include "vtkResourceStream.h"
#include <memory> // for std::unique_ptr
VTK_ABI_NAMESPACE_BEGIN
/**
* @brief vtkResourceStream implementation for file input
*/
class VTKIOCORE_EXPORT vtkFileResourceStream : public vtkResourceStream
{
struct vtkInternals;
public:
vtkTypeMacro(vtkFileResourceStream, vtkResourceStream);
static vtkFileResourceStream* New();
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* @brief Open a file
*
* Opening a file reset the stream to initial position: Tell() = 0.
* EndOfStream is set to true if file opening failed.
* If path is nullptr, the file will only be closed.
* This function will increase modified time.
*
* @param path the file path
* @return true if file was successfully opened, false otherwise.
* Return false if path is nullptr.
*/
bool Open(VTK_FILEPATH const char* path);
///@{
/**
* @brief Override vtkResourceStream functions
*/
std::size_t Read(void* buffer, std::size_t bytes) override;
bool EndOfStream() override;
vtkTypeInt64 Seek(vtkTypeInt64 pos, SeekDirection dir) override;
vtkTypeInt64 Tell() override;
///@}
protected:
vtkFileResourceStream();
~vtkFileResourceStream() override;
vtkFileResourceStream(const vtkFileResourceStream&) = delete;
vtkFileResourceStream& operator=(const vtkFileResourceStream&) = delete;
private:
std::unique_ptr<vtkInternals> Impl;
};
VTK_ABI_NAMESPACE_END
#endif
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