Interface to extract only the *.yaml metadata

[scarlehoff]

So that the whole eko doesn't need to be extracted.

[felixhekhorn]

There is

eko/src/ekobox/cli/inspect.py

Line 36 in 895f37f

def sub_cards(operator: EKO):

but I'm not sure someone ever used it ... one would need to add the metadata.yaml though

[scarlehoff]

The problem is here

eko/src/eko/io/struct.py

Line 376 in 895f37f

def read(

in order to have the theory card so that it is available to read (with .raw or otherwise), you have to extract it.

[felixhekhorn]

@lol782 if you wish to have another small project - this one might be better suited. It should be a simple file operation involving tarfile.TarFile.extractfile or similar in one way or another. The crucial goal here is to avoid the extraction of the actual (very) big operators, but just obtain the metadata + theory card + operator card (i.e. the (small) yaml files).

[felixhekhorn]

Note that you need to have the metadata already available before you can load the theory or ops card

eko/src/eko/io/struct.py

Lines 133 to 137 in bf40621

	def theory_card(self):
	"""Provide theory card, retrieving from the dump."""
	raw_th = yaml.safe_load(self.paths.theory_card.read_text(encoding="utf-8"))
	if self.metadata.data_version in [1]:
	raw_th = v1.update_theory(raw_th)

In order to have a clear interface it might make sense to strip the loading away from the main class (eko.io.struct.EKO) since that mostly refers to the main (big) operators and then just reuse the new code there