TTY::Tree

Print directory or structured data in a tree like format.

TTY::Tree provides independent directory or hash data rendering component for TTY toolkit.

Installation

Add this line to your application's Gemfile:

gem 'tty-tree'

And then execute:

$ bundle

Or install it yourself as:

$ gem install tty-tree

Contents

• 1. Usage
• 2. Interface
  • 2.1 new
  • 2.1.1 :level
  • 2.1.2 :file_limit
  • 2.1.3 :show_hidden
  • 2.1.4 :only_dirs
  • 2.2 render
  • 2.2.1 :indent

1. Usage

TTY::Tree accepts as input a directory path:

tree = TTY::Tree.new(Dir.pwd)
tree = TTY::Tree.new('dir-name')

or can be given as its input a hash data structure with keys representing directories and values as arrays representing directory contents:

data = {
  dir1: [
    'config.dat',
    { dir2: [
      { dir3: [ 'file3-1.txt' ] },
      'file2-1.txt'
      ]
    },
    'file1-1.txt',
    'file1-2.txt'
  ]
}

tree = TTY::Tree.new(data)

You can also construct tree with a DSL:

tree = TTY::Tree.new do
  node 'dir1' do
    node 'config.dat'
    node 'dir2' do
      node 'dir3' do
        leaf 'file3-1.txt'
      end
      leaf 'file2-1.txt'
    end
    node 'file1-1.txt'
    leaf 'file1-2.txt'
  end
end

The TTY::Tree can print the content in various formats. By default, a directory format is used by invoking render:

puts tree.render
# =>
# dir1
# ├── config.dat
# ├── dir2
# │   ├── dir3
# │   │   └── file3-1.txt
# │   └── file2-1.txt
# ├── file1-1.txt
# └── file1-2.txt

The render call returns a string and leaves it up to api consumer how to handle the tree like output.

2. Interface

2.1 new

In order to create TTY::Tree you need to provide either a path to directory which can be a String, Pathname or Dir:

tree = TTY::Tree.new(Dir.pwd)
tree = TTY::Tree.new('dir-name')
tree = TTY::Tree.new(Pathname.pwd)

Or hash data structure:

data = {
  dir1: [
    'config.dat',
    ...
  ]
}

tree = TTY::Tree.new(data)

As as shortcut notation you can call [] like so:

tree = TTY::Tree[Dir.pwd]

You can also use DSL to build tree by using node & leaf:

tree = TTY::Tree.new do
  node 'dir1' do
    node 'config.dat'
    node 'dir2' do
      node 'dir3' do
        leaf 'file3-1.txt'
      end
      leaf 'file2-1.txt'
    end
    node 'file1-1.txt'
    leaf 'file1-2.txt'
  end
end

2.1.1 level

The maximum level of depth for this tree when parsing directory. The initial directory is treated as index 0.

tree = TTY::Tree.new('dir-name', level: 2)
# => parse directories as deep as 2 levels

2.1.2 :file_limit

Prevent TTY::Tree descending directories more than # entries:

tree = TTY::Tree.new('dir-name', file_limit: 2)

2.1.3 :show_hidden

In order to for TTY::Tree to include hidden files in its output use :show_hidden option like so:

tree = TTY::Tree.new('dir-name', show_hidden: true)

2.1.4 only_dirs

To only display directory entries in the output use :only_dirs option:

tree = TTY::Tree.new('dir-name', only_dirs: true)

Listing directories does not inlucde hidden ones. If you wish to show hidden directories as well do:

tree = TTY::Tree.new('dir-name', only_dirs: true, show_hidden: true)

2.2 render

By deafult content is printed using TTY::PathRenderer.

If you prefer a numeric notation of nested content you can use TTY::NumberRenderer to enumerates each nested node like so:

puts tree.render(as: :number)
# =>
# dir1
# 1.1 config.dat
# 1.2 dir2
#     2.3 dir3
#         3.4 file3-1.txt
#     2.5 file2-1.txt
# 1.6 file1-1.txt
# 1.7 file1-2.txt

2.2.1 :indent

The number of spaces to use when indenting nested directories. By default 4 spaces are used.

tree.render(as: :dir, indent: 2)

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/piotrmurach/tty-tree. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

Copyright

Copyright (c) 2017 Piotr Murach. See LICENSE for further details.