libmanager.cpp

所有压缩格式的压缩解压缩。

// LibManager.cpp: implementation of the CLibManager class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Compress.h"
#include "LibManager.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CLibManager::CLibManager(LPCTSTR szPath)
{
	HANDLE hFindFile;
	WIN32_FIND_DATA FindFileData;

	CString FileName,FullPath=szPath;
	if (FullPath[lstrlen(FullPath)-1]!='\\') FullPath+='\\';

	FileName=FullPath+"*.cdl";
	if ((hFindFile=FindFirstFile((LPCTSTR)FileName,&FindFileData))
			==INVALID_HANDLE_VALUE)
	{	//找不到库
		m_lpAllInfo=NULL;
		m_nNoCDL=0;
	}
	else
	{
		int n=1;
		HMODULE hModule;
		LPFNGETDLLINFO GetDllInfo;
		//有多少库
		while (FindNextFile(hFindFile,&FindFileData)) n++;
		FindClose(hFindFile);

		m_lpAllInfo=new EVERYLIBINFO[n];
		m_nNoCDL=0;
		hFindFile=FindFirstFile((LPCTSTR)FileName,&FindFileData);
		do{
			if ((hModule=(HMODULE)LoadLibrary
					(LPCTSTR(FullPath+FindFileData.cFileName)))==0)
				continue;

			GetDllInfo=(LPFNGETDLLINFO)GetProcAddress(hModule,"GetDllInfo");
			if (GetDllInfo)
			{
				GetDllInfo(&m_lpAllInfo[m_nNoCDL].CDLInfo);
				if ((m_lpAllInfo[m_nNoCDL].CDLInfo.dwVersion&0xFF000000)
						<=CDL_CUR_VERSION_NUMBER)	//可以使用低版本库
				{
					m_lpAllInfo[m_nNoCDL].hModule=0;
					m_lpAllInfo[m_nNoCDL].szFileName=FullPath+FindFileData.cFileName;
					m_nNoCDL++;
				}
			}
			FreeLibrary(hModule);
		}while(FindNextFile(hFindFile,&FindFileData));

		FindClose(hFindFile);
	}
}

CLibManager::~CLibManager()
{
	if (m_lpAllInfo)
		delete m_lpAllInfo;
}
int CLibManager::LoadLib(int nIndex)
{
	if (nIndex<0 || nIndex>=m_nNoCDL)	return -1;

	if (m_lpAllInfo[nIndex].hModule)	//已经装入
		return nIndex;

	m_lpAllInfo[nIndex].hModule
		=LoadLibrary((LPCTSTR)m_lpAllInfo[nIndex].szFileName);

	return nIndex;
}
int CLibManager::LoadLib(LPCTSTR szExtName)
{
	if (!szExtName || !szExtName[0]) return -1;
	CString filter,ext(szExtName);
	ext.MakeLower();
	for (int i=0;i<m_nNoCDL;i++)
	{
		filter=m_lpAllInfo[i].CDLInfo.szFileFilter;
		filter.MakeLower();
		if (filter.Find(ext)>=0) break;
	}
	return LoadLib(i);
}
void CLibManager::FreeLib(int nIndex)
{
	if (nIndex<0 && nIndex>=m_nNoCDL) return;

	if (m_lpAllInfo[nIndex].hModule) FreeLibrary(m_lpAllInfo[nIndex].hModule);
	m_lpAllInfo[nIndex].hModule=0;
}
void CLibManager::FreeAll()
{
	for (int i=0;i<m_nNoCDL;i++)	FreeLib(i);
}
void CLibManager::GetFuncInfo(int nIndex,LPFUNCTIONINFO lpfi)
{
	lpfi->lpfnCreate=NULL;
	lpfi->lpfnRelease=NULL;
	lpfi->lpfnGetNoEntries=NULL;
	lpfi->lpfnGetFileInfo=NULL;
	lpfi->lpfnAddNewFile=NULL;
	lpfi->lpfnExtractFile=NULL;
	lpfi->lpfnDeleteFiles=NULL;
	lpfi->lpfnTestFile=NULL;
	lpfi->lpfnSetPassword=NULL;
	lpfi->lpfnGetComment=NULL;
	lpfi->lpfnSetComment=NULL;

	if (!IsLoaded(nIndex)) return;

	LPFNGETFUNCTIONINFO GetFunctionInfo=(LPFNGETFUNCTIONINFO)
		GetProcAddress(m_lpAllInfo[nIndex].hModule,"GetFunctionInfo");

	GetFunctionInfo(lpfi);
}
LPFNCDLABOUTBOX CLibManager::GetFnGetAboutBox(int nIndex)
{
	if (!IsLoaded(nIndex)) return NULL;

	return (LPFNCDLABOUTBOX)
		GetProcAddress(m_lpAllInfo[nIndex].hModule,"CDLAboutBox");
}