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////////////////////////////////////////////////////////////////////////////////
// This source file is part of the ZipArchive Library Open Source distribution
// and is Copyrighted 2000 - 2022 by Artpol Software - Tadeusz Dracz
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// For the licensing details refer to the License.txt file.
//
// Web Site: https://www.artpol-software.com
////////////////////////////////////////////////////////////////////////////////
/**
* \file ZipAbstractFile.h
* Includes the CZipAbstractFile class.
*
*/
#if !defined(ZIPARCHIVE_ZIPABSTRACTFILE_DOT_H)
#define ZIPARCHIVE_ZIPABSTRACTFILE_DOT_H
#if _MSC_VER > 1000
#pragma once
#pragma warning( push )
#endif
#include "ZipExport.h"
#include "ZipString.h"
class ZIP_API CZipAbstractFile
{
public:
enum
{ begin = SEEK_SET, // 0
current = SEEK_CUR, // 1
end = SEEK_END // 2
};
#if _MSC_VER > 1000
#pragma warning (disable : 26455)
#pragma warning (disable : 26432)
#endif
CZipAbstractFile(){}
virtual bool Open(LPCTSTR , UINT , bool ){return false;}
virtual void Close() = 0;
virtual void Flush() = 0;
virtual ZIP_FILE_USIZE GetPosition() const = 0;
virtual ZIP_FILE_USIZE Seek(ZIP_FILE_SIZE lOff, int nFrom) = 0;
ZIP_FILE_USIZE SafeSeek(ZIP_FILE_USIZE lOff, bool fromBeginning = true)
{
ZIP_FILE_SIZE offset = 0;
if (lOff > ZIP_FILE_SIZEMAX)
{
offset = GetLength() - lOff;
fromBeginning = !fromBeginning;
}
else
offset = (ZIP_FILE_USIZE)lOff;
if (fromBeginning)
return Seek(offset, CZipAbstractFile::begin);
else
return Seek(-offset, CZipAbstractFile::end);
}
virtual ZIP_FILE_USIZE GetLength() const = 0;
virtual void SetLength(ZIP_FILE_USIZE nNewLen) = 0;
virtual ZIP_FILE_USIZE SeekToBegin(){return Seek(0, begin);}
virtual ZIP_FILE_USIZE SeekToEnd(){return Seek(0, end);}
virtual CZipString GetFilePath() const = 0;
virtual bool HasFilePath() const = 0;
virtual size_t Read(void *lpBuf, size_t nCount) = 0;
virtual void Write(const void* lpBuf, size_t nCount) = 0;
virtual bool IsClosed() const = 0;
virtual ~CZipAbstractFile(){};
};
#if _MSC_VER > 1000
#pragma warning( pop )
#endif
#endif // !defined(ZIPARCHIVE_ZIPABSTRACTFILE_DOT_H)
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