压缩解压

开发平台：
Visual C++

UnrarObject.cpp：源码内容
							// UnrarObject.cpp: implementation of the CUnrarObject class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "UnrarObject.h"
#include "gAPI.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
//------------------------------------------------------------------------
CUnrarObject::CUnrarObject()
{
	m_hArchive=NULL;
	bCleanOriginalArchive=FALSE;
	ResetGuiControls();
}
//------------------------------------------------------------------------
CUnrarObject::~CUnrarObject()
{
	if(pGUIWindows)	delete pGUIWindows;
	if(m_hArchive)
	{
		RARCloseArchive(m_hArchive);
		m_hArchive=NULL;
	}
}
//------------------------------------------------------------------------
//------------------------------------------------------------------------
int CUnrarObject::SetInputPath(CString InputPath)
{
	m_InputPath=InputPath;
		
	//[1] Get the handle 
	char CmtBuf[16384];					//Comment buffer
	RAROpenArchiveDataEx ArchiveData;
	memset(&ArchiveData,0,sizeof(ArchiveData));
	ArchiveData.ArcName=InputPath.GetBuffer(1024);
	ArchiveData.CmtBuf=CmtBuf;
	ArchiveData.CmtBufSize=sizeof(CmtBuf);
	ArchiveData.OpenMode=RAR_OM_EXTRACT;	
	m_hArchive=RAROpenArchiveEx(&ArchiveData);
	if(m_hArchive==NULL)
	{
		printf("Error open packed files %s",InputPath);
		return 0;	
	}
	//[2] hook the callback functions for GUI display
	RARSetCallback(m_hArchive,ExtractCallbackProc,(LONG)this);
	return 1;
}
void CUnrarObject::SetCleanArchiveOption(bool bRemove)
{
	bCleanOriginalArchive=bRemove;
}
//------------------------------------------------------------------------
//////////////////////////////////////////////////////////////////////
// Unpacking operations
//////////////////////////////////////////////////////////////////////
//------------------------------------------------------------------------
//The multi-thread function
UINT CUnrarObject::UnpackThreadFun(LPVOID pParam)
{
	CUnrarObject* pThis=(CUnrarObject*)pParam;
	if(pThis==NULL)
		return -1;		
	if(pThis->m_hArchive)
	{
		pThis->Update_Gui_Info(_T("-Unpacking ")+ApiGetFileName(pThis->m_InputPath));
		pThis->UnpackedArchives.Add(pThis->m_InputPath);		//For the final deletion/cleaning 
				
		RARHeaderData HeaderData;
		int ReadHeaderCode;
		///////////////////////////////////////////////////////////////////
		//For each file in the rar 
		while ((ReadHeaderCode=RARReadHeader(pThis->m_hArchive,&HeaderData)==0))
		{
			CString Info;
			Info.Format("        ==> %s Extracted",HeaderData.FileName);
			pThis->Update_Gui_Info(Info);
			int nReturnCode=RARProcessFile(	pThis->m_hArchive,RAR_EXTRACT,
											pThis->m_OutputPath.GetBuffer(1024),NULL);
			switch(nReturnCode)
			{
			case 0:						break;		//Success
			case ERAR_BAD_DATA:        	TRACE("File Extraction: Bad data, possibly CRC error");		return FALSE;
			case ERAR_BAD_ARCHIVE:      TRACE("File Extraction:	Volume is not valid RAR archive");	return FALSE;
			case ERAR_UNKNOWN_FORMAT:   TRACE("File Extraction:	Unknown archive format");			return FALSE;
			case ERAR_EOPEN:            TRACE("File Extraction:	Volume open error");				return FALSE;
			case ERAR_ECREATE:          TRACE("File Extraction:	File create error");				return FALSE;
			case ERAR_ECLOSE:           TRACE("File Extraction:	File close error");					return FALSE;
			case ERAR_EREAD:            TRACE("File Extraction:	Read error");						return FALSE;
			case ERAR_EWRITE:           TRACE("File Extraction:	Write error");						return FALSE;
			}
		}
		///////////////////////////////////////////////////////////////////
		
	}
	pThis->Update_Gui_Info("Success!");
	pThis->CleanOriginalArchive(pThis->bCleanOriginalArchive);
	return 0;
}
//------------------------------------------------------------------------
//------------------------------------------------------------------------
//Use this to call the unpack function
void CUnrarObject::Unpack(bool bMultiThread)
{
	if(SetInputPath(m_InputPath)==0)return;
	if(m_hArchive==NULL)return;	
	if(bMultiThread)	
		AfxBeginThread(UnpackThreadFun,this);
	else
    	UnpackThreadFun((LPVOID)this);
}
//------------------------------------------------------------------------
//The callback function, following the signature of RARLAB API
int CUnrarObject::ExtractCallbackProc(UINT msg, LONG UserData, LONG P1, LONG P2)
{
	CUnrarObject* pThis=(CUnrarObject*)UserData;
	switch(msg)
	{
    case UCM_CHANGEVOLUME:
		if (P2==RAR_VOL_ASK)
		{
			CString Info; 
			Info.Format("A volume %s is required, terminate now",ApiGetFileName((char *)P1));
			TRACE(Info);
			exit(-1); 
		}
		if (P2==RAR_VOL_NOTIFY)
		{
			CString Path=(char *)P1;
			pThis->UnpackedArchives.Add(Path);							//For file deletions;
			pThis->Update_Gui_Info(_T("-Unpacking ")+ApiGetFileName(Path));
		}
    case UCM_PROCESSDATA: {	}
    case UCM_NEEDPASSWORD:{ }
	}
	return(0);
}
//------------------------------------------------------------------------
void CUnrarObject::CleanOriginalArchive(BOOL bClearFilesOnSuccess)
{
	if(bClearFilesOnSuccess)
	{
		RARCloseArchive(m_hArchive);
		m_hArchive=NULL;
		for(int i=0;i<UnpackedArchives.GetSize();i++)
			DeleteFile(UnpackedArchives[i]);			//Direct delete, not RecycleBin!
	}
}
//------------------------------------------------------------------------
//////////////////////////////////////////////////////////////////////
// GUI Controls 
//////////////////////////////////////////////////////////////////////
//------------------------------------------------------------------------
void CUnrarObject::ResetGuiControls()
{
	pGUIWindows=new CGuiStruct;
	pGUIWindows->m_pListBox=NULL;
	pGUIWindows->m_pstatic=NULL;
}
void CUnrarObject::Update_Gui_Info(CString Info,  BOOL bClearDataFirst)
{
	if(Info.IsEmpty())
		return;
	if(pGUIWindows->m_pListBox)
	{	
		if(bClearDataFirst)
			pGUIWindows->m_pListBox->ResetContent();
		int n=pGUIWindows->m_pListBox->GetCount();
		pGUIWindows->m_pListBox->InsertString(n,Info);
		pGUIWindows->m_pListBox->SetCurSel(n);
		pGUIWindows->m_pListBox->Invalidate();
	}
	if(pGUIWindows->m_pstatic)
	{
		pGUIWindows->m_pstatic->SetWindowText(Info);
		pGUIWindows->m_pstatic->Invalidate();
	}
	//Append your own GUI control update code here
}
//------------------------------------------------------------------------

						