OpenGLContext.loaders.loader

Load-manager for downloading multi-value URLs

The Singleton "Loader" should be used for most interactions.

Classes

class _Loader( object ):

(Singleton) Manager for downloading resources

Is a generic class which provides download services which follow VRML97 semantics (multiple-URL definitions, with chaining to the first successful URL).

The loader will attempt to use a local cache of files to prevent multiple downloading.

__call__( self , url , baseURL = None )

Load the given multi-value url and call callbacks

url: vrml97-style url (multi-value string)
baseURL: optional base url from which items in url will be resolved. protofunctions.root(node).baseURI will give you the baseURL normally used for the given node.

raises IOError on failure returns (successfulURL, filename, open_file, headers) on success

headers will be None for local files

__init__( self )

Initialize the Loader

download( self , url )

Download the given url to local disk, return local filename

findHandler( self , url )

Find registered handler for the url's apparent suffix

TODO: allow for content-type operations after downloading the URL

get( self , url )

Retrieve the given single-value URL