gistfile1.rb

#!/usr/bin/env ruby
require 'ftools'

def get_sub_dirs_in_dir(dir)
  `find #{dir} -type d`.split("\n") - [dir]
end

def get_sub_dirs_in_current_dir
  get_sub_dirs_in_dir Dir.pwd
end

def get_files_in_dir(dir, base = false)
  list =`find #{dir} -type f`.split("\n")
  list = list.map { |f| File.basename(f) } if base
  list
end

def ask_source_files(array, msg)
  puts msg
  array.each_with_index do |f, index|
    puts "  (#{index}) - #{f}"
  end
  array[gets.chomp.to_i]
end

def copy_missing_file_to_dir(src, dir)
  puts "** copy #{src} to #{dir}, confirm?(y/N)"
  loop do
    break if gets.chomp =~ /y|yes/i
  end
  File::copy(src, dir, true)
end

if __FILE__ == $0 && ARGV.size == 0

  base_dir = Dir.pwd
  puts "BASE DIR - #{base_dir}"

  subdirs = get_sub_dirs_in_current_dir
  files_index, subdirs_hash = Hash.new, Hash.new 
  subdirs.each do |sdir|
    subdirs_hash[sdir] = get_files_in_dir(sdir)
    get_files_in_dir(sdir).each do |f|
      fname = File.basename f
      files_index[fname] ||= []
      files_index[fname] << File.join(sdir, fname)
    end
  end
  all_files = files_index.keys
  subdirs.each do |sdir|
    missings = all_files - get_files_in_dir(sdir, true)
    missings.each do |mf|
      if files_index[mf].size > 1
        msg = "** Please select a source file of #{mf} to #{sdir}"
        src = ask_source_files(files_index[mf], msg)
      end
      src ||= files_index[mf].first
      copy_missing_file_to_dir(src, sdir)
    end
  end

end