class Idlc::Workspace

def flatten(base_path, file_ext)
  Dir["#{base_path}/**/*.#{file_ext}"].each do |file|
    # get the filename and parent dir
    filename = file.tr('/', '-')
    # copy the files to a single temp directory.
    debug("copying #{file} to #{@tmp_dir}/#{filename} ...")
    FileUtils.cp(file, "#{@tmp_dir}/#{filename}")
  end
end