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75 lines
1.3 KiB
75 lines
1.3 KiB
10 months ago
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#include "SevenZipLibrary.h"
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#include "GUIDs.h"
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namespace SevenZip
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{
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const TString DefaultLibraryPath = _T( "7z.dll" );
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SevenZipLibrary::SevenZipLibrary()
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: m_dll( NULL )
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, m_func( NULL )
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{
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}
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SevenZipLibrary::~SevenZipLibrary()
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{
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Free();
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}
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bool SevenZipLibrary::Load()
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{
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return Load( DefaultLibraryPath );
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}
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bool SevenZipLibrary::Load( const TString& libraryPath )
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{
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Free();
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m_dll = LoadLibrary( libraryPath.c_str() );
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if ( m_dll == NULL )
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{
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return false;
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//throw SevenZipException( GetWinErrMsg( _T( "LoadLibrary" ), GetLastError() ) );
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}
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m_func = reinterpret_cast< CreateObjectFunc >( GetProcAddress( m_dll, "CreateObject" ) );
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if ( m_func == NULL )
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{
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Free();
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return false;
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//throw SevenZipException( _T( "Loaded library is missing required CreateObject function" ) );
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}
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return true;
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}
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void SevenZipLibrary::Free()
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{
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if ( m_dll != NULL )
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{
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FreeLibrary( m_dll );
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m_dll = NULL;
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m_func = NULL;
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}
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}
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bool SevenZipLibrary::CreateObject( const GUID& clsID, const GUID& interfaceID, void** outObject ) const
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{
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if ( m_func == NULL )
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{
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return false;
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//throw SevenZipException( _T( "Library is not loaded" ) );
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}
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HRESULT hr = m_func( &clsID, &interfaceID, outObject );
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if ( FAILED( hr ) )
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{
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return false;
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//throw SevenZipException( GetCOMErrMsg( _T( "CreateObject" ), hr ) );
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}
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return true;
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}
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}
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