65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
// Copyright (C) 2002-2007 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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#ifndef __C_LIMIT_READ_FILE_H_INCLUDED__
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#define __C_LIMIT_READ_FILE_H_INCLUDED__
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#include "IReadFile.h"
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#include "irrString.h"
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namespace irr
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{
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class CUnicodeConverter;
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namespace io
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{
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/*! this is a read file, which is limited to some boundaries,
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so that it may only start from a certain file position
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and may only read until a certain file position.
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This can be useful, for example for reading uncompressed files
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in an archive (zip).
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!*/
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class CLimitReadFile : public IReadFile
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{
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public:
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CLimitReadFile(IReadFile* alreadyOpenedFile, s32 areaSize, const c8* name);
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virtual ~CLimitReadFile();
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//! returns how much was read
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virtual s32 read(void* buffer, u32 sizeToRead);
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//! changes position in file, returns true if successful
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//! if relativeMovement==true, the pos is changed relative to current pos,
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//! otherwise from begin of file
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virtual bool seek(s32 finalPos, bool relativeMovement = false);
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//! returns size of file
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virtual s32 getSize();
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//! returns where in the file we are.
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virtual s32 getPos();
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//! returns name of file
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virtual const c8* getFileName();
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private:
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void init();
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core::stringc Filename;
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s32 AreaSize;
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s32 AreaStart;
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s32 AreaEnd;
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IReadFile* File;
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};
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} // end namespace io
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} // end namespace irr
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#endif
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