R: Does the file exist?

assert_all_are_existing_files {assertive.files}

R Documentation

Does the file exist?

Description

Checks to see if the input files exist.

Usage

assert_all_are_existing_files(x, severity = getOption("assertive.severity",
  "stop"))

assert_any_are_existing_files(x, severity = getOption("assertive.severity",
  "stop"))

is_existing_file(x, .xname = get_name_in_parent(x))

Arguments

`x`	Input to check.
`severity`	How severe should the consequences of the assertion be? Either `"stop"`, `"warning"`, `"message"`, or `"none"`.
`.xname`	Not intended to be used directly.

Value

is_existing_file wraps file.exists, showing the names of the inputs in the answer. assert_*_are_existing_files return nothing but throws an error if is_existing_file returns FALSE.

Note

Trailing slashes are removed from paths to avoid a lot of false negatives by the underlying function file.exists.

Examples

assert_all_are_existing_files(dir())
# These examples should fail.
assertive.base::dont_stop(
  assert_all_are_existing_files("not an existing file (probably)")
)

[Package assertive.files version 0.0-2 Index]