hg-divide.rb

#!/usr/bin/env ruby
require 'fileutils'
require 'tempfile'

unless ARGV.size == 2
  $stderr.puts "usage: #{$0} SOURCE DEST"
  exit(1)
end

src, dest = ARGV
FileUtils.mkdir dest

Dir.glob("#{src}/*/") do |path|
  dir = File.basename(path)

  map = Tempfile.new('filemap').tap do |f|
    f.print <<-MAP
include #{dir}
rename #{dir} .
    MAP

    f.flush
  end

  system "hg convert --filemap #{map.path} #{src} #{File.join(dest, dir)}"
end