107 lines
3.1 KiB
Ruby
107 lines
3.1 KiB
Ruby
module Guard
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autoload :UI, 'guard/ui'
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autoload :Dsl, 'guard/dsl'
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autoload :Interactor, 'guard/interactor'
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autoload :Listener, 'guard/listener'
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autoload :Watcher, 'guard/watcher'
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autoload :Notifier, 'guard/notifier'
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class << self
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attr_accessor :options, :guards, :listener
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# initialize this singleton
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def setup(options = {})
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@options = options
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@listener = Listener.select_and_init
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@guards = []
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!@options[:notify] || ENV["GUARD_NOTIFY"] == 'false' ? Notifier.turn_off : Notifier.turn_on
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self
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end
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def start(options = {})
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setup(options)
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Interactor.init_signal_traps
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Dsl.evaluate_guardfile(options)
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if guards.empty?
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UI.error "No guards found in Guardfile, please add at least one."
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else
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listener.on_change do |files|
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run { run_on_change_for_all_guards(files) } if Watcher.match_files?(guards, files)
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end
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UI.info "Guard is now watching at '#{Dir.pwd}'"
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guards.each { |guard| supervised_task(guard, :start) }
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listener.start
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end
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end
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def run_on_change_for_all_guards(files)
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guards.each do |guard|
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paths = Watcher.match_files(guard, files)
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supervised_task(guard, :run_on_change, paths) unless paths.empty?
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end
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# Reparse the whole directory to catch new files modified during the guards run
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new_modified_files = listener.modified_files([Dir.pwd + '/'], :all => true)
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listener.update_last_event
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if !new_modified_files.empty? && Watcher.match_files?(guards, new_modified_files)
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run { run_on_change_for_all_guards(new_modified_files) }
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end
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end
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# Let a guard execute its task but
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# fire it if his work leads to a system failure
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def supervised_task(guard, task_to_supervise, *args)
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guard.send(task_to_supervise, *args)
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rescue Exception
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UI.error("#{guard.class.name} guard failed to achieve its <#{task_to_supervise.to_s}> command: #{$!}")
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guards.delete guard
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UI.info("Guard #{guard.class.name} has just been fired")
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return $!
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end
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def run
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listener.stop
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UI.clear if options[:clear]
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begin
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yield
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rescue Interrupt
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end
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listener.start
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end
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def add_guard(name, watchers = [], options = {})
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guard_class = get_guard_class(name)
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@guards << guard_class.new(watchers, options)
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end
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def get_guard_class(name)
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try_to_load_gem name
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self.const_get(self.constants.find{ |klass_name| klass_name.to_s.downcase == name.downcase })
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rescue TypeError
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UI.error "Could not find load find gem 'guard-#{name}' or find class Guard::#{name}"
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end
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def try_to_load_gem(name)
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require "guard/#{name.downcase}"
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rescue LoadError
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end
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def locate_guard(name)
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if Gem::Version.create(Gem::VERSION) >= Gem::Version.create('1.8.0')
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Gem::Specification.find_by_name("guard-#{name}").full_gem_path
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else
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Gem.source_index.find_name("guard-#{name}").last.full_gem_path
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end
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rescue
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UI.error "Could not find 'guard-#{name}' gem path."
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end
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end
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end
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