DecodedView#

class barecat.DecodedView(store)[source]#

Bases: collections.abc.MutableMapping[str, Any]

Dict-like view that always encodes/decodes based on file extension.

Wraps a raw bytes store (like Barecat) and automatically encodes on write and decodes on read based on the file extension. Raises an error if no codec is registered for the extension.

Parameters:: store (MutableMapping[str, bytes]) – A MutableMapping[str, bytes] to wrap (e.g., a Barecat instance).

Examples

>>> bc = Barecat('data.barecat', readonly=False)
>>> dec = DecodedView(bc)
>>> dec['config.json'] = {'key': 'value'}
>>> dec['config.json']
{'key': 'value'}
>>> dec['image.png'] = numpy_array
>>> # For raw bytes, use the store directly: bc['data.raw'] = b'...'

Instance Methods#

`register_codec`(exts, encoder, decoder[, nonfinal])	Register a codec for the given extensions.
`clear_codecs`()	Remove all registered codecs.
`keys`()	D.keys() -> a set-like object providing a view on D's keys
`items`()	D.items() -> a set-like object providing a view on D's items
`values`()	D.values() -> an object providing a view on D's values