drools-eclipse/org.guvnor.tools/src/org/guvnor/tools/utils/PlatformUtils.java
public static IFile getResourceFromFSPath(String location) {
        return Activator.getDefault().getWorkspace().
                getRoot().getFileForLocation(new Path(location));
    }
public static IFile getResourceFromFSPath(String location) {
        return Activator.getDefault().getWorkspace().
                getRoot().getFileForLocation(new Path(location));
    }
Resolves a file system location to an Eclipse workspace resource.
@param location The file system location
@return The Eclipse <code>IFile</code>, null if not found