ruby-cli-tree

A command line printer of tree structures (e.g. directory tree) written in Ruby.

This library can be used to build a tree structure, and render or print it like an ASCII graph.

e.g. it can be used to implement a directory tree printer just like the Linux utility tree. See bin/tree.rb

Installation

gem install cli-tree

Usage

1. require 'cli-tree'
2. Create a TreeNode: tree = TreeNode.new(node_name, children = [])
3. Add more TreeNode objects to children: tree.children << child_node
4. Add more TreeNode objects to child_node, and so on.
5. Call puts tree.render or tree.print to print the tree.

Example

require 'cli-tree'

tree = TreeNode.new("root", [
  TreeNode.new("foo", [
    TreeNode.new("bar"),
    TreeNode.new("baz")
  ])
])

puts tree.render
# or simply
tree.print

Output:

root
└── foo
    ├── bar
    └── baz