assert_all_are_existing_files

From assertive.files v0.0-2 by Richard Cotton

Does the file exist?

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

library(assertive.files)

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

Documentation reproduced from package assertive.files, version 0.0-2, License: GPL (>= 3)

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