class ChefCLI::Command::Diff

def apply_params!(params)
  remaining_args = parse_options(params)
  if no_comparison_specified?(remaining_args)
    ui.err("No comparison specified")
    ui.err("")
    ui.err(opt_parser)
    false
  elsif conflicting_args_and_opts_given?(remaining_args)
    ui.err("Conflicting arguments and options: git and Policy Group comparisons cannot be mixed")
    ui.err("")
    ui.err(opt_parser)
    false
  elsif conflicting_git_options_given?
    ui.err("Conflicting git options: --head and --git are exclusive")
    ui.err("")
    ui.err(opt_parser)
    false
  elsif config[:head]
    set_policyfile_path_from_args(remaining_args)
    @old_base = Policyfile::ComparisonBase::Git.new("HEAD", policyfile_lock_relpath)
    @new_base = Policyfile::ComparisonBase::Local.new(policyfile_lock_relpath)
    true
  elsif config[:git]
    set_policyfile_path_from_args(remaining_args)
    parse_git_comparison(config[:git])
  else
    set_policyfile_path_from_args(remaining_args)
    parse_server_comparison(remaining_args)
  end
end