Computer Science Canada

Listing a Directory Tree
Author:  Cervantes [ Mon Jun 26, 2006 8:28 pm ]
Post subject:  Listing a Directory Tree
This code adds a class method to the Dir class that generates a nice text graphic for a directory. For example, using this program on my Rubidium directory produces:
tree:

|-- plugins
|   |-- help
|   |   |-- help.txt
|   |   |-- help.rb
|   |-- about
|   |   |-- about.txt
|   |   |-- about.rb
|   |-- kickban.rb
|   |-- license.rb
|   |-- clear.rb
|-- logs
|-- img
|   |-- rubidium-splash.png
|-- testing
|   |-- ansicolor.rb
|   |-- colourful.rb
|-- README.txt
|-- IRC.rb
|-- client.rb
|-- plugin.rb
|-- run.rb

I took the idea from the 'tree' package in the Ubuntu (and probably others) repositories.

The source:
Ruby:

class Dir
  def Dir.print_tree(dir = ".", nesting = 0)
    Dir.foreach(dir) do |entry|
      next if entry =~ /^\.{1,2}/   # Ignore ".", "..", or hidden files
      puts "|   " * nesting + "|-- #{entry}"
      if File.stat(d = "#{dir}#{File::SEPARATOR}#{entry}").directory?
        print_tree(d, nesting + 1)
      end
    end
  end
end

Use it like so:
Ruby:

Dir.print_tree                                      # print a tree of the current directory
Dir.print_tree("plugins")                      # print a tree of the "plugins" subdirectory
Dir.print_tree("/usr/lib/ruby/1.8/irb")    # print a tree of the "irb" directory in the ruby library

Thanks to wtd who helped me with something similar earlier.
Author:  Null [ Tue Jun 27, 2006 11:33 am ]
Post subject: 
That's great!

Thanks.
Author:  rdrake [ Tue Jun 27, 2006 1:36 pm ]
Post subject: 
Very nice, Cervantes. Now, back to the IRC channel with you Wink.

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