adfExplorer (version 2.0.3)

adf_file_exists: Test if an entry exists on a virtual device

Description

Test if an entry (file or directory) exists on a virtual ADF device. adf_file_exists() is the equivalent of file.exists() on a virtual ADF device. adf_dir_exists() is the equivalent of dir.exists() on a virtual ADF device.

Usage

adf_file_exists(x, path, ...)
# S3 method for adf_device
adf_file_exists(x, path, ...)
# S3 method for virtual_path
adf_file_exists(x, path, ...)
adf_dir_exists(x, path, ...)
# S3 method for adf_device
adf_dir_exists(x, path, ...)
# S3 method for virtual_path
adf_dir_exists(x, path, ...)

Value

adf_file_exists() returns TRUE if the path exists on the virtual device, FALSE otherwise. adf_dir_exists() returns TRUE when the path exists and is a directory, FALSE otherwise.

Arguments

x

Either a virtual device or virtual path.

path

A virtual_path() pointing to the targeted entry (file or directory). Should be omitted when x is already a virtual path.

...

Ignored

Author

Pepijn de Vries

Examples

## First setup a connection to a virtual device
my_device <- demo_adf()

adf_file_exists(my_device, "s/startup-sequence")
adf_dir_exists(my_device, "s/startup-sequence")

close(my_device)