Read and write registry files — registry

The stored form is an R object serialised with saveRDS(). YAML and JSON are supported as optional authoring formats only; they never define the internal model and never become a hard dependency.

Usage

registry_write(registry, path, created = Sys.time())

registry_read(path)

Arguments

registry: A registry() object.
path: File path. For registry_write(), the conventional location inside a package source tree is inst/getaca/registry.rds.
created: Publication time recorded in the file. Pass a fixed value to keep a build byte-reproducible.

Value

registry_write() returns path invisibly. registry_read() returns a getaca_registry.

Details

Writing stamps created, since publishing a state is what dates it. created is what orders two states in time, which a content digest cannot do; registry_digest() says whether two states are the same, and created says which came first. It is deliberately outside the digest, so writing an unchanged registry out again leaves its identity alone.