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#' @title Manage locally cached CRU CL v. 2.0 files
#'
#' @description Manage cached \pkg{getCRUCLdata} files with \pkg{hoardr}
#'
#' @export
#' @name manage_cache
#'
#' @details The default cache directory is
#' \code{file.path(rappdirs::user_cache_dir(), "R/getCRUCLdata")}, but you can
#' set your own path using \code{manage_cache$cache_path_set()}
#'
#' \code{manage_cache$cache_delete} only accepts one file name, while
#' \code{manage_cache$cache_delete_all}
#' does not accept any names, but deletes all files. For deleting many specific
#' files, use \code{manage_cache$cache_delete} in an
#' \code{\link[base]{lapply}()} type call.
#'
#' @section Useful user functions:
#' \itemize{
#' \item \code{manage_cache$cache_path_get()} - get cache path
#' \item \code{manage_cache$cache_path_set()} - set cache path
#' \item \code{manage_cache$list()} - returns a character vector of full
#' path file names
#' \item \code{manage_cache$files()} - returns file objects with metadata
#' \item \code{manage_cache$details()} - returns files with details
#' \item \code{manage_cache$delete()} - delete specific files
#' \item \code{manage_cache$delete_all()} - delete all files, returns
#' nothing
#' }
#'
#' @author Adam H. Sparks, \email{adamhsparks@@gmail.com}
#'
#' @examples \dontrun{
#'
#' # list files in cache
#' manage_cache$list()
#'
#' # delete certain database files
#' manage_cache$delete("file path")
#' manage_cache$list()
#'
#' # delete all files in cache
#' manage_cache$delete_all()
#' manage_cache$list()
#'
#' # set a different cache path from the default
#' manage_cache$cache_path_set("~/tmp")
#' }
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