mirror of https://github.com/minetest/irrlicht.git
58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#pragma once
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#include "IReferenceCounted.h"
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#include "coreutil.h"
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#include "EReadFileType.h"
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namespace irr
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{
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namespace io
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{
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//! Interface providing read access to a file.
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class IReadFile : public virtual IReferenceCounted
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{
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public:
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//! Reads an amount of bytes from the file.
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/** \param buffer Pointer to buffer where read bytes are written to.
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\param sizeToRead Amount of bytes to read from the file.
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\return How many bytes were read. */
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virtual size_t read(void *buffer, size_t sizeToRead) = 0;
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//! Changes position in file
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/** \param finalPos Destination position in the file.
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\param relativeMovement If set to true, the position in the file is
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changed relative to current position. Otherwise the position is changed
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from beginning of file.
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\return True if successful, otherwise false. */
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virtual bool seek(long finalPos, bool relativeMovement = false) = 0;
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//! Get size of file.
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/** \return Size of the file in bytes. */
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virtual long getSize() const = 0;
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//! Get the current position in the file.
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/** \return Current position in the file in bytes on success or -1L on failure. */
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virtual long getPos() const = 0;
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//! Get name of file.
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/** \return File name as zero terminated character string. */
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virtual const io::path &getFileName() const = 0;
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//! Get the type of the class implementing this interface
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virtual EREAD_FILE_TYPE getType() const
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{
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return EFIT_UNKNOWN;
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}
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};
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//! Internal function, please do not use.
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IReadFile *createLimitReadFile(const io::path &fileName, IReadFile *alreadyOpenedFile, long pos, long areaSize);
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} // end namespace io
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} // end namespace irr
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