Get file extensions for files at a path — get_path

If fileext is provided, get_path_fileext() will pass the file extension forward without checking it. list_path_fileext() is a more basic function that list file extensions at a path directory.

Usage

get_path_fileext(
  path,
  fileext = NULL,
  n = 1,
  quiet = FALSE,
  call = caller_env()
)

list_path_fileext(path, allow_null = FALSE, call = caller_env(), ...)

Arguments

path: A single directory or file path. The directory or file must exist.
fileext: If fileext is supplied, the function returns the file extension as is. If NULL (default), one or more file extensions are extracted from files at the path location.
n: Max number of unique file types to return. Returns warning and n most common file types if path has more than n unique file types.
quiet: If TRUE, suppress informational messages.
call: The execution environment of a currently running function, e.g. caller_env(). The function will be mentioned in error messages as the source of the error. See the call argument of abort() for more information.
allow_null: If TRUE, list_path_fileext() returns NULL if path is NULL or if no files exist at the path location. If FALSE (default), abort if either condition is met.
...: Additional parameters passed by list_path_fileext() to list.files().