is_empty_file: Is a file too big or small?

In assertive.files: Assertions to Check Properties of Files

Description

Checks to see if a file is within a given size range.

Usage

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

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

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

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

assert_all_file_sizes_are_in_range(x, lower = 0, upper = Inf,
  lower_is_strict = FALSE, upper_is_strict = FALSE, na_ignore = FALSE,
  severity = getOption("assertive.severity", "stop"))

assert_any_file_sizes_are_in_range(x, lower = 0, upper = Inf,
  lower_is_strict = FALSE, upper_is_strict = FALSE,
  severity = getOption("assertive.severity", "stop"))

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

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

is_file_size_in_range(x, lower = 0, upper = Inf, lower_is_strict = FALSE,
  upper_is_strict = FALSE, .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".
lower	Smallest file size allowed, in bytes.
upper	Largest file size allowed, in bytes.
lower_is_strict	If TRUE, the lower bound is open (strict) otherwise it is closed.
upper_is_strict	If TRUE, the upper bound is open (strict) otherwise it is closed.
na_ignore	A logical value. If FALSE, NA values cause an error; otherwise they do not. Like na.rm in many stats package functions, except that the position of the failing values does not change.
.xname	Not intended to be used directly.

Value

is_empty_file wraps file.info, retuning TRUE when the input is a file that exists with size zero. assert_*_are_empty_files return nothing but throws an error if is_empty_file returns FALSE.

See Also

file.info.

Examples

tf <- tempfile()
file.create(tf)
is_empty_file(tf)
cat("some stuff", file = tf)
is_non_empty_file(tf)
assertive.base::dont_stop(assert_all_file_sizes_are_in_range(tf, lower = 100))
unlink(tf)  

assertive.files documentation built on May 2, 2019, 1:29 p.m.