def loadXML(self, xmlfile=None, strict=False, xmlstring='', basepath=''): """Loads and stores a complete map definition in leiu of a set of layers. Stores an empty style of the same name, which is the only option for rendering. The map will be rendered as prescribed in the XML.""" config = ConfigParser.SafeConfigParser() map_wms_srs = None if self.configpath: config.readfp(open(self.configpath)) if config.has_option('map', 'wms_srs'): map_wms_srs = config.get('map', 'wms_srs') tmp_map = Map(0,0) if xmlfile: load_map(tmp_map, xmlfile, strict) elif xmlstring: load_map_from_string(tmp_map, xmlstring, strict, basepath) else: raise ServerConfigurationError("Mapnik configuration XML is not specified - 'xmlfile' and 'xmlstring' variables are empty.\ Please set one of this variables to load mapnik map object.") # parse map level attributes if tmp_map.background: self.map_attributes['bgcolor'] = tmp_map.background if tmp_map.buffer_size: self.map_attributes['buffer_size'] = tmp_map.buffer_size if xmlfile is None : # Map objects have no name, so just call it default. layer_name = 'default' else : # The layer name is the basename of the xml file or the # whole file name layer_name = xmlfile fname_match = re.match('([A-Za-z0-9_\-\.]+).xml', xmlfile) if fname_match is not None : layer_name = fname_match.group(1) else : layer_name = xmlfile style_name = layer_name style_obj = Style() # Make the map have attributes expected of layers tmp_map.name = layer_name map_p = common.Projection(tmp_map.srs) if map_wms_srs is None : tmp_map.wms_srs = map_p.epsgstring() else : tmp_map.wms_srs = map_wms_srs tmp_map.queryable = False # set map extent from config file. geog_coords = config.get('map','wms_extent').split(',') geog_box = Box2d(float(geog_coords[0]), float(geog_coords[1]), float(geog_coords[2]), float(geog_coords[3])) proj_box = geog_box.forward(map_p) tmp_map.zoom_to_box(proj_box) tmp_map.maximum_extent = proj_box self.register_style(style_name, style_obj) self.register_layer(tmp_map, style_name)