check_default_data_path {portalr}

Manage the default path for downloading Portal Data into

Description

check_default_data_path checks if a default data path is set, and prompts the user to set it if it is missing.

get_default_data_path gets the value of the data path environmental variable

use_default_data_path has 3 steps. First, it checks for the presence of a pre-existing setting for the environmental variable. Then it checks if the folder exists and creates it, if needed. Then it provides instructions for setting the environmental variable.

Usage

check_default_data_path(
  ENV_VAR = "PORTALR_DATA_PATH",
  MESSAGE_FUN = message,
  DATA_NAME = "Portal data"
)

get_default_data_path(fallback = "~", ENV_VAR = "PORTALR_DATA_PATH")

use_default_data_path(path = NULL, ENV_VAR = "PORTALR_DATA_PATH")

Arguments

ENV_VAR

the environmental variable to check (by default '"PORTALR_DATA_PATH"“)

MESSAGE_FUN

the function to use to output messages

DATA_NAME

the name of the dataset to use in output messages

fallback

the default value to use if the setting is missing

path

character Folder into which data will be downloaded.

Value

FALSE if there is no path set, TRUE otherwise

None