path.cat: High level function that concatenates paths.

In adamryczkowski/pathcat: Provides path.cat and make.path.relative functions, that enhance system.path() function that concatenates paths.

Description

It tries to concatenate each argument in order from left to right trying to emulate standard OS behaviour when user would put each argument in a separate cd (or in R setwd(...)) command. It also tries to be as platfrom-agnostic, as possible, treating '/' and '\' equally.

Usage

path.cat(..., fsep = .Platform$file.sep)

Arguments

...	character string with each directory component
fsep	Custom path separator. Defaults to .Platform$file.sep

Details

This way it enhances file.path with two features:

• It understands that .. means "go one directory up". When encountering .. the last (the youngest) directory so far parsed gets deleted, or nothing happens if we are already on root.

• It understands when a path is absolute. Absolute path resets parsing from start with the path, just like you would expect from the command line. Path is treated as absolute if it either starts with '/' (or '\'), or with regex ^([^/^\]+:)[/\]

Value

Character string with concatenated path

See Also

file.path

adamryczkowski/pathcat documentation built on May 10, 2019, 5:51 a.m.