Bug 214204 Only document content in document folder should be removed.[0601]
Description: Only document related content in document folder should be removed. Build number:2.3.0.v20080103 Steps to reproduce: 1. Deploy BIRT. 2. Edit web.xml to set BIRT_VIEWER_DOCUMENT_FOLDER to your local path and there are content inside the path. 3. Start server and click View Example to preview sample report. Expected result: Only content created by viewer should be removed in specified document folder. Actual result: All contents are deleted despite whether they are related with BIRT. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
if ( format == null )
			return null;
		String key = "viewer.label." + format.replaceAll( " ", "_" ); 
		String label = DataUtil.trimString( getInitProp( key ) );
		if ( label.length( ) <= 0 )
			label = format;
		return label;
	}
	/**
	 * Returns the base url defined in config file
	 * 
	 * @return
	 */
	public static String getBaseURL( )
	{
		String baseURL = getInitProp( PROP_BASE_URL );
		if ( baseURL != null && baseURL.length( ) > 0 )
		{
			if ( baseURL.endsWith( "/" ) ) 
				baseURL = baseURL.substring( 0, baseURL.length( ) - 1 );
		}
		return baseURL;
	}
	/**
	 * convert path from System Properties Definition. For example:
	 * ${java.io.tmpdir}
	 * 
	 * @param path
	 * @return
	 */