extract_short_path: Extract the Last Two Path Components from a File Path

In test.assessr: Assessing Package Test Reliability and Quality

Extract the Last Two Path Components from a File Path

Description

This helper function takes any full file path and extracts only the last two components, such as '"R/add.R"'. It supports both forward slashes ('/') and backslashes ('\') to accommodate Windows, macOS, and Linux paths.

Usage

extract_short_path(long_file_name)

Arguments

long_file_name

Character string. A full file path using '/' or '\' as separators.

Details

Trailing separators are preserved where meaningful (e.g., '"R/"' when the input ends with a slash). Empty path components are removed except when required to detect a trailing separator.

Value

A character scalar containing the last two components of the path joined with a forward slash—for example '"R/add.R"'—or a single component if only one exists. The returned value is always of class character.

Output Meaning

This function is intended for display and logging purposes, where only the tail portion of a full file path is meaningful. It does not check for file existence; it simply processes the string supplied by the user.

Examples

extract_short_path("pkg/R/add.R")
extract_short_path("C:\\\\projects\\\\mypkg\\\\R\\\\helper.R")

test.assessr documentation built on March 3, 2026, 1:06 a.m.