Recursively (probably a bad idea) changes filename to the name of it's parent directory

unsubderictify.rb

#!/usr/bin/env ruby

require 'docopt'
require 'fileutils'

@app = File.basename(__FILE__).chomp('.rb')
@doc = <<DOCOPT
@app

Recursively (probably a bad idea) changes filename to the name of it's parent directory.
Copyright (C) 2015 William Myers https://github.com/mkwmms

Usage: #{@app} [options] FILE ...

Arguements:
FILE  the file to change its name

Options:
-h --help          show this help message and exit
-V --version       show version and exit
-q --quiet         suppress message output
-n --dry-run       perform a trial run with no changes made
DOCOPT

def dry_run?
  @args['--dry-run'] == true ? true : false
end

def verbose?
  @args['--quiet'] == false || @args.nil? || dry_run? ? true : false
end

def info(title, *sput)
  $stdout.puts "#{'==>'.blue} #{title}".bold
  $stdout.puts sput if verbose?
end

def process_file(old_file)
  info "#{dry_run? ? '(DRY-RUN) ' : ''}Processing: #{old_file}" if verbose?
  old_dir = File.dirname(old_file)
  ext = File.extname(old_file).downcase
  dir_name = File.basename(old_dir)
  dest_dir =  File.dirname(old_dir)
  new_file = File.join(dest_dir, "#{dir_name}#{ext}")
  # TODO: don't overwrite existing files...
  # TODO: move files to trash instead...
  FileUtils.mv old_file, new_file, verbose: verbose?, noop: dry_run?
  if Dir.entries(old_dir).size == 2
    # Or recursively do it (but not in this method):
    # Dir[File.join(dest_dir, '**/'].reverse_each { |d| Dir.rmdir d if Dir.entries(d).size == 2 }
    FileUtils.rmdir old_dir, verbose: verbose?, noop: dry_run?
  end
end

def main
  @args = Docopt.docopt(@doc, version: "#{@app} 0.0.1")
  @args['FILE'].each do |file|
    file = File.expand_path(file)
    if File.directory? file
      files = File.join("#{file}/**", '*.*')
      Dir[files].each do |f|
        f = File.absolute_path(f)
        process_file f
      end
    else
      process_file file
    end
  end
rescue Docopt::Exit, RegexpError => e
  puts e.message
end

main if $PROGRAM_NAME == __FILE__

# vim: tw=79 fenc=utf-8 ft=ruby