93 lines
2.5 KiB
Ruby
93 lines
2.5 KiB
Ruby
require 'bundler'
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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 init(options = {})
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@options = options
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@listener = Listener.init
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@guards = []
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return self
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end
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def start(options = {})
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init(options)
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Dsl.evaluate_guardfile
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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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Interactor.init_signal_traps
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listener.on_change do |files|
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if Watcher.match_files?(guards, files)
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run do
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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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end
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end
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end
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UI.info "Guard is now watching at '#{Dir.pwd}'"
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guards.each { |g| supervised_task(g, :start) }
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listener.start
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end
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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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require "guard/#{name.downcase}"
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klasses = []
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ObjectSpace.each_object(Class) do |klass|
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klasses << klass if klass.to_s.downcase.match "^guard::#{name.downcase}"
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end
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klasses.first
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rescue LoadError
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UI.error "Could not find gem 'guard-#{name}' in the current Gemfile."
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end
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# Let a guard execute his task but
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# fire it if his work lead to 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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::Guard.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 locate_guard(name)
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`gem open guard-#{name} --latest --command echo`.chomp
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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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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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end
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end |