////////////////////////////////////////////////////////////////////////////////
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// This source file is part of the ZipArchive library source distribution and
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// is Copyrighted 2000 - 2011 by Artpol Software - Tadeusz Dracz
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// For the licensing details refer to the License.txt file.
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//
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// Web Site: http://www.artpol-software.com
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////////////////////////////////////////////////////////////////////////////////
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/**
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* \file ZipAbstractFile.h
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* Includes the CZipAbstractFile class.
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*
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*/
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#if !defined(ZIPARCHIVE_ZIPABSTRACTFILE_DOT_H)
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#define ZIPARCHIVE_ZIPABSTRACTFILE_DOT_H
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#if _MSC_VER > 1000
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#pragma once
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#endif
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#include "ZipExport.h"
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#include "ZipString.h"
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class ZIP_API CZipAbstractFile
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{
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public:
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enum
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{ begin = SEEK_SET, // 0
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current = SEEK_CUR, // 1
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end = SEEK_END // 2
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};
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CZipAbstractFile(){}
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virtual bool Open(LPCTSTR , UINT , bool ){return false;}
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virtual void Close() = 0;
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virtual void Flush() = 0;
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virtual ZIP_FILE_USIZE GetPosition() const = 0;
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virtual ZIP_FILE_USIZE Seek(ZIP_FILE_SIZE lOff, int nFrom) = 0;
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ZIP_FILE_USIZE SafeSeek(ZIP_FILE_USIZE lOff, bool fromBeginning = true)
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{
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ZIP_FILE_SIZE offset;
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if (lOff > ZIP_FILE_SIZEMAX)
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{
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offset = GetLength() - lOff;
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fromBeginning = !fromBeginning;
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}
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else
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offset = (ZIP_FILE_USIZE)lOff;
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if (fromBeginning)
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return Seek(offset, CZipAbstractFile::begin);
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else
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return Seek(-offset, CZipAbstractFile::end);
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}
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virtual ZIP_FILE_USIZE GetLength() const = 0;
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virtual void SetLength(ZIP_FILE_USIZE nNewLen) = 0;
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virtual ZIP_FILE_USIZE SeekToBegin(){return Seek(0, begin);}
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virtual ZIP_FILE_USIZE SeekToEnd(){return Seek(0, end);}
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virtual CZipString GetFilePath() const = 0;
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virtual bool HasFilePath() const = 0;
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virtual UINT Read(void *lpBuf, UINT nCount) = 0;
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virtual void Write(const void* lpBuf, UINT nCount) = 0;
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virtual bool IsClosed() const = 0;
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virtual ~CZipAbstractFile(){};
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};
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#endif // !defined(ZIPARCHIVE_ZIPABSTRACTFILE_DOT_H)
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