D:/opendownloadmanager/ODM-1.x/vms7zipFormatDLL.cpp

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/*
  Free Download Manager Copyright (c) 2003-2007 FreeDownloadManager.ORG
  Open Download Manager Copyright (c) 2008-2010 OpenDownloadManager.ORG
*/        

#include "stdafx.h"
#include "FdmApp.h"
#include "vms7zipFormatDLL.h"
#include <archive\IArchive.h>

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

vms7zipFormatDLL::vms7zipFormatDLL(LPCSTR pszDll)
{
        m_hDll = NULL;
        m_pfnCreateObject = NULL;
        m_pfnGetHandlerProperty = NULL;

        if (pszDll)
                Load (pszDll);
}

vms7zipFormatDLL::~vms7zipFormatDLL()
{
        Free ();
}

bool vms7zipFormatDLL::Load(LPCSTR pszDll)
{
        Free ();
        m_hDll = LoadLibrary (pszDll);
        if (m_hDll == NULL)
                return false;
        m_pfnCreateObject = (FNCreateObject)GetProcAddress (m_hDll, "CreateObject");
        m_pfnGetHandlerProperty = (FNGetHandlerProperty)GetProcAddress (m_hDll, "GetHandlerProperty");;
        return m_pfnCreateObject != NULL && m_pfnGetHandlerProperty != NULL;
}

void vms7zipFormatDLL::Free()
{
        if (m_hDll) 
        {
                FreeLibrary (m_hDll);
                m_hDll = NULL;
                m_pfnCreateObject = NULL;
                m_pfnGetHandlerProperty = NULL;
        }
}

HRESULT vms7zipFormatDLL::CreateObject(const GUID *classID, const GUID *interfaceID, void **outObject)
{
        if (m_pfnCreateObject == NULL)
                return E_NOTIMPL;

        return m_pfnCreateObject (classID, interfaceID, outObject);
}

HRESULT vms7zipFormatDLL::GetHandlerProperty(PROPID propID, PROPVARIANT *value)
{
        if (m_pfnGetHandlerProperty == NULL)
                return E_NOTIMPL;

        return m_pfnGetHandlerProperty (propID, value);
}

bool vms7zipFormatDLL::IsSupportedArchive(LPCSTR pszArchive)
{
        LPCSTR pszExt;
        pszExt = strrchr (pszArchive, '.');
        if (pszExt == NULL)
                return false;
        pszExt++;

        PROPVARIANT vt;
        PropVariantInit (&vt);
        if (FAILED (GetHandlerProperty (NArchive::kExtension, &vt)))
                return false;

        CString str = vt.bstrVal;
        SysFreeString (vt.bstrVal);

        if (FALSE == IsExtInExtsStr (str, pszExt))
                return false;

        return true;
}

HRESULT vms7zipFormatDLL::get_GUID(GUID *guid)
{
        PROPVARIANT vt;
        HRESULT hr;
        hr = GetHandlerProperty (NArchive::kClassID, &vt);
        if (FAILED (hr))
                return hr;

        CopyMemory (guid, vt.bstrVal, sizeof (GUID));
        SysFreeString (vt.bstrVal);

        return S_OK;
}

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