Repeated usage of macro DB / registry

[hroncok]

The README shows:

registry = system_macro_registry()
with open("SPEC", "r", encoding="utf8") as fd:
    expanded_specfile = specfile_expand(fd.read(), registry)
    print("Name:", registry["name"].value)
    print("Version:", registry["version"].value)

That makes me think everything operates on one registry.

How do I parse multiple specfiles without polluting the registry or without calling IO-expensive system_macro_registry for each?

[praiskup]

Great observation! For rpmautospec, I'm proposing using copy.deepcopy(). See here: https://github.com/fedora-infra/rpmautospec/blob/54f3a5cfdc67f5161d7a47eaa97495eaf9b13f8a/rpmautospec/specparser.py#L103

If you have any more clever proposals, please share them. Right now, the handling of the registry/database is rather naive; we don't have a separate registry for macros defined within the parsed spec file.