irrlicht/source/Irrlicht/CReadFile.h

// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h

#pragma once

#include <stdio.h>
#include "IReadFile.h"
#include "irrString.h"

namespace irr
{

namespace io
{

	/*!
		Class for reading a real file from disk.
	*/
	class CReadFile : public IReadFile
	{
	public:

		CReadFile(const io::path& fileName);

		virtual ~CReadFile();

		//! returns how much was read
		size_t read(void* buffer, size_t sizeToRead) override;

		//! changes position in file, returns true if successful
		bool seek(long finalPos, bool relativeMovement = false) override;

		//! returns size of file
		long getSize() const override;

		//! returns if file is open
		bool isOpen() const
		{
			return File != 0;
		}

		//! returns where in the file we are.
		long getPos() const override;

		//! returns name of file
		const io::path& getFileName() const override;

		//! Get the type of the class implementing this interface
		EREAD_FILE_TYPE getType() const override
		{
			return ERFT_READ_FILE;
		}

		//! create read file on disk.
		static IReadFile* createReadFile(const io::path& fileName);

	private:

		//! opens the file
		void openFile();

		FILE* File;
		long FileSize;
		io::path Filename;
	};

} // end namespace io
} // end namespace irr