www.pudn.com > LZ77.rar > LZWCompression.h

// LZWCompression.h: interface for the CLZWCompression class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#if !defined(AFX_LZWCOMPRESSION_H__6C8D7CDC_4AF5_426D_A4AF_49682963D8C3__INCLUDED_) 
#define AFX_LZWCOMPRESSION_H__6C8D7CDC_4AF5_426D_A4AF_49682963D8C3__INCLUDED_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
 
#include "Dictionary.h" 
 
class CLZWCompression   
{ 
public: 
	//	These two functions were added to use the log file with the application 
	BOOL DecompressWithLog(CFile &source, CFile &destination, CStringArray *pLog); 
	BOOL CompressWithLog(CFile &source, CFile &destination, CStringArray *pLog = NULL); 
	void Log(CString data); 
private: 
	CStringArray * p_Log; 
 
public: 
	void ClearDictionary(); 
	BOOL Decompress(CFile &source, CFile &destination); 
	BOOL Compress(CFile &source, CFile &destination); 
	void CreateDictionary(); 
	CLZWCompression(); 
	virtual ~CLZWCompression(); 
private: 
	CString convertASCIIToText(BYTE ascii); 
	void Init(); 
	void CalculateBitSize(DWORD value); 
	void CloseCompressedFile(CFile &source); 
	DWORD DecompressData(CFile &source); 
	BYTE m_MaxBits; 
	DWORD m_MaxCode[32]; 
	int m_TotalBits; 
	void CompressData(CFile &dest, long toSave); 
	DWORD m_SavedData; 
	CDictionary *m_dictionary; 
}; 
 
#endif // !defined(AFX_LZWCOMPRESSION_H__6C8D7CDC_4AF5_426D_A4AF_49682963D8C3__INCLUDED_)