R: Is the file accessible?

assert_all_are_executable_files {assertive.files}

R Documentation

Is the file accessible?

Description

Checks to see if the input files can be executed/read/written to.

Usage

assert_all_are_executable_files(x, warn_about_windows = TRUE,
  severity = getOption("assertive.severity", "stop"))

assert_any_are_executable_files(x, warn_about_windows = TRUE,
  severity = getOption("assertive.severity", "stop"))

assert_all_are_readable_files(x, warn_about_windows = TRUE,
  severity = getOption("assertive.severity", "stop"))

assert_any_are_readable_files(x, warn_about_windows = TRUE,
  severity = getOption("assertive.severity", "stop"))

assert_all_are_writable_files(x, warn_about_windows = TRUE,
  severity = getOption("assertive.severity", "stop"))

assert_any_are_writable_files(x, warn_about_windows = TRUE,
  severity = getOption("assertive.severity", "stop"))

is_executable_file(x, warn_about_windows = TRUE,
  .xname = get_name_in_parent(x))

is_ex_file(x)

is_readable_file(x, warn_about_windows = TRUE,
  .xname = get_name_in_parent(x))

is_writable_file(x, warn_about_windows = TRUE,
  .xname = get_name_in_parent(x))

Arguments

`x`	Input to check.
`warn_about_windows`	Logical. If `TRUE`, then calling the function under Windows will throw a warning about the problems with `file.access`.
`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_executable_file wraps file.access, showing the names of the inputs in the answer. assert_is_executable_file returns nothing but throws an error if is_executable_file returns FALSE.

Examples

files <- dir()
is_readable_file(files)
is_writable_file(files, warn_about_windows = FALSE)
is_executable_file(files, warn_about_windows = FALSE)