Resolve the FFIEC Parquet data repository directory

Resolves the root directory used for processed Parquet data from an explicit argument or the `DATA_DIR` environment variable. In an interactive session, when neither is available, the helper asks the user to choose or enter a directory and offers to persist it in either project-level `.Renviron` or user-level `~/.Renviron`.

Usage

ffiec_data_dir(data_dir = NULL, prompt = interactive(), fallback = ".")

Arguments

data_dir

Optional Parquet data repository root.

prompt

If `TRUE`, prompt interactively when `data_dir` and `DATA_DIR` are both missing.

fallback

Directory used as the default when prompting.

Value

A directory path as a character string, or `NULL` when prompting is disabled and no directory can be resolved.