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# frozen_string_literal: true require_relative '../command' require_relative '../package' require_relative '../version_option' class Gem::Commands::BuildCommand < Gem::Command include Gem::VersionOption def initialize super 'build', 'Build a gem from a gemspec' add_platform_option add_option '--force', 'skip validation of the spec' do |value, options| options[:force] = true end add_option '--strict', 'consider warnings as errors when validating the spec' do |value, options| options[:strict] = true end add_option '-o', '--output FILE', 'output gem with the given filename' do |value, options| options[:output] = value end add_option '-C PATH', 'Run as if gem build was started in <PATH> instead of the current working directory.' do |value, options| options[:build_path] = value end end def arguments # :nodoc: "GEMSPEC_FILE gemspec file name to build a gem for" end def description # :nodoc: <<-EOF The build command allows you to create a gem from a ruby gemspec. The best way to build a gem is to use a Rakefile and the Gem::PackageTask which ships with RubyGems. The gemspec can either be created by hand or extracted from an existing gem with gem spec: $ gem unpack my_gem-1.0.gem Unpacked gem: '.../my_gem-1.0' $ gem spec my_gem-1.0.gem --ruby > my_gem-1.0/my_gem-1.0.gemspec $ cd my_gem-1.0 [edit gem contents] $ gem build my_gem-1.0.gemspec Gems can be saved to a specified filename with the output option: $ gem build my_gem-1.0.gemspec --output=release.gem EOF end def usage # :nodoc: "#{program_name} GEMSPEC_FILE" end def execute if build_path = options[:build_path] Dir.chdir(build_path) { build_gem } return end build_gem end private def find_gemspec(glob = "*.gemspec") gemspecs = Dir.glob(glob).sort if gemspecs.size > 1 alert_error "Multiple gemspecs found: #{gemspecs}, please specify one" terminate_interaction(1) end gemspecs.first end def build_gem gemspec = resolve_gem_name if gemspec build_package(gemspec) else alert_error error_message terminate_interaction(1) end end def build_package(gemspec) spec = Gem::Specification.load(gemspec) if spec Gem::Package.build( spec, options[:force], options[:strict], options[:output] ) else alert_error "Error loading gemspec. Aborting." terminate_interaction 1 end end def resolve_gem_name return find_gemspec unless gem_name if File.exist?(gem_name) gem_name else find_gemspec("#{gem_name}.gemspec") || find_gemspec(gem_name) end end def error_message if gem_name "Couldn't find a gemspec file matching '#{gem_name}' in #{Dir.pwd}" else "Couldn't find a gemspec file in #{Dir.pwd}" end end def gem_name get_one_optional_argument end end