Class Gem::Commands::BuildCommand < Gem::Command

# File ../ruby/lib/rubygems/commands/build_command.rb, line 6
def initialize
  super 'build', 'Build a gem from a gemspec'

  add_option '--force', 'skip validation of the spec' do |value, options|
    options[:force] = true
  end
end

# File ../ruby/lib/rubygems/commands/build_command.rb, line 22
def execute
  gemspec = get_one_gem_name

  if File.exist? gemspec
    spec = load_gemspec gemspec

    if spec then
      Gem::Builder.new(spec).build options[:force]
    else
      alert_error "Error loading gemspec. Aborting."
      terminate_interaction 1
    end
  else
    alert_error "Gemspec file not found: #{gemspec}"
    terminate_interaction 1
  end
end

# File ../ruby/lib/rubygems/commands/build_command.rb, line 40
def load_gemspec filename
  if yaml?(filename)
    open(filename) do |f|
      begin
        Gem::Specification.from_yaml(f)
      rescue Gem::EndOfYAMLException
        nil
      end
    end
  else
    Gem::Specification.load(filename) # can return nil
  end
end

# File ../ruby/lib/rubygems/commands/build_command.rb, line 54
def yaml?(filename)
  line = open(filename) { |f| line = f.gets }
  result = line =~ %r{!ruby/object:Gem::Specification}
  result
end