xref: /aoo41x/main/sal/systools/win32/uwinapi/GetLongPathName.cpp (revision cdf0e10c)

/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/


{
	DWORD	dwResult = 0;	// Assume failure

	if ( IsBadStringPtr( lpShortPath, MAX_PATH ) )
	{
		SetLastError( ERROR_INVALID_PARAMETER );
		return dwResult;
	}

	// Assume a not existing buffer means a bufsize of zero
	if ( !lpLongPath )
		cchBuffer = 0;

	if ( _tcslen( lpShortPath ) == 2 && lpShortPath[1] == ':' )
	{
		_tcscpy( lpLongPath, lpShortPath );
		dwResult = _tcslen( lpLongPath );
	}
	else
	{
		HANDLE			hFind;
		WIN32_FIND_DATA	aFindFileData;

		if ( lpShortPath[_tcslen(lpShortPath)-1] == '\\' )
		{
			TCHAR	szFilePath[MAX_PATH];

			_tcscpy( szFilePath, lpShortPath );
			_tcscat( szFilePath, TEXT("*.*") );
			hFind = FindFirstFile( szFilePath, &aFindFileData );;
			aFindFileData.cFileName[0] = 0;
		}
		else
		{
			hFind = FindFirstFile( lpShortPath, &aFindFileData );
			if ( !IsValidHandle( hFind ) )
			{
				TCHAR	szFilePath[MAX_PATH];

				_tcscpy( szFilePath, lpShortPath );
				_tcscat( szFilePath, TEXT("\\*.*") );
				hFind = FindFirstFile( szFilePath, &aFindFileData );;
				aFindFileData.cFileName[0] = 0;
			}
		}

		if ( IsValidHandle( hFind ) )
		{
			FindClose( hFind );

			LPCTSTR	lpLastSlash = _tcsrchr( lpShortPath, '\\' );

			if ( lpLastSlash )
			{
				int	nParentLen = lpLastSlash - lpShortPath;
				LPTSTR	lpParentPath = (LPTSTR)_alloca( (nParentLen + 1) * sizeof(TCHAR) );

				CopyMemory( lpParentPath, lpShortPath, nParentLen * sizeof(TCHAR) );
				lpParentPath[nParentLen] = 0;

				dwResult = GetLongPathName( lpParentPath, lpLongPath, cchBuffer );

				if ( !dwResult )
					_tcscpy( lpLongPath, lpParentPath );
			}
			else
			{
				_tcscpy( lpLongPath, lpShortPath );
				dwResult = _tcslen( lpLongPath );
			}

			if ( dwResult < cchBuffer )
			{
				_tcscat( lpLongPath, TEXT("\\") );
				_tcscat( lpLongPath, aFindFileData.cFileName );
				dwResult = _tcslen( lpLongPath );
			}
			else
				dwResult += _tcslen( aFindFileData.cFileName ) + 1;
		}
	}

	return dwResult;
}