adf.exists: Test file or directory existence in an amigaDisk object

In adfExplorer: Import from and Export to Amiga Disk Files

Test file or directory existence in an amigaDisk object

Description

Tests whether a specific file (or directory) exists in an amigaDisk object.

Usage

## S4 method for signature 'amigaDisk,character'
adf.file.exists(x, file)

## S4 method for signature 'amigaDisk,character'
dir.exists.adf(x, path)

Arguments

x	An amigaDisk object in which this method will check for the file's existence.
file	A (vector of) character string(s) representing a file or directory name. Use Amiga specifications for file name (see current.adf.dir). Wildcards are not allowed.
path	file A (vector of) character string(s) representing a directory name. Use Amiga specifications for the path name (see current.adf.dir). Wildcards are not allowed.

Details

This method will look for a file/directory header, based on its name. If such a header exists, it is assumed that the file exists. The file/directory itself is not checked for validity.

Value

Returns a logical value indicating whether the file exists or not. In case of dir.exists.adf the path needs to exist and it needs to be a directory in order to return TRUE.

Author(s)

Pepijn de Vries

Examples

data(adf.example)

## This file exists:
adf.file.exists(adf.example, "df0:mods/mod.intro")

## But it doesn't exist as a directory
dir.exists.adf(adf.example, "df0:mods/mod.intro")

## This file also doesn't:
adf.file.exists(adf.example, "df0:idontexist")

adfExplorer documentation built on May 29, 2024, 11:23 a.m.