def run
raise InvalidOption, "You can not specify `--strict` and `--optimistic` at the same time." if @options[:strict] && @options[:optimistic]
raise InvalidOption, "Please specify gems to add." if @gems.empty?
version = @options[:version].nil? ? nil : @options[:version].split(",").map(&:strip)
unless version.nil?
version.each do |v|
raise InvalidOption, "Invalid gem requirement pattern '#{v}'" unless Gem::Requirement::PATTERN =~ v.to_s
end
end
dependencies = @gems.map {|g| Bundler::Dependency.new(g, version, @options) }
Injector.inject(dependencies,
:conservative_versioning => @options[:version].nil?,
:optimistic => @options[:optimistic],
:strict => @options[:strict])
Installer.install(Bundler.root, Bundler.definition) unless @options["skip-install"]
end