Check if data directory exists and create a new directory if needed

Get the path for a package-specific cache directory with rappdirs::user_cache_dir(), check for the existence of a data directory, optionally create a new directory at the provided path location.

Usage

get_data_dir(
  path = NULL,
  cache = FALSE,
  create = TRUE,
  pkg = "sfext",
  allow_null = TRUE
)

list_data_files(
  path = NULL,
  pkg = "sfext",
  cache = FALSE,
  fileext = NULL,
  pattern = NULL,
  full.names = TRUE,
  ignore.case = TRUE,
  ...
)

Arguments

path: Path to directory for use as data directory.
cache: If TRUE, and path is NULL set path to rappdirs::user_cache_dir (using value of pkg as appname). If path is not NULL, the path is returned even if cache is TRUE.
create: If FALSE and path does not exist, return path with a warning. If TRUE and rlang::is_interactive is TRUE, ask user if directory should be created. If the session not interactive and create is TRUE, a new directory will be created.
pkg: Package name; defaults to "sfext"
allow_null: If TRUE, path is NULL, cache is FALSE, return the NULL path value; defaults to TRUE.
fileext: If pattern is NULL, fileext is used to set the pattern and filter listed files to those matching the file extension.
pattern: an optional regular expression. Only file names which match the regular expression will be returned.
full.names: a logical value. If TRUE, the directory path is prepended to the file names to give a relative file path. If FALSE, the file names (rather than paths) are returned.
ignore.case: logical. Should pattern-matching be case-insensitive?
...: Additional parameters passed to list.files()