master/lib/guard.rb
Rémy Coutable a318e03ad1 Added a debug message when running run_on_change
So the debug mode is a little more useful...

Also added timestamp in debug print
2011-07-21 01:21:04 +02:00

121 lines
3.7 KiB
Ruby

module Guard
autoload :UI, 'guard/ui'
autoload :Dsl, 'guard/dsl'
autoload :DslDescriber, 'guard/dsl_describer'
autoload :Interactor, 'guard/interactor'
autoload :Listener, 'guard/listener'
autoload :Watcher, 'guard/watcher'
autoload :Notifier, 'guard/notifier'
class << self
attr_accessor :options, :guards, :listener
# initialize this singleton
def setup(options = {})
@options = options
@listener = Listener.select_and_init
@guards = []
@options[:notify] && ENV["GUARD_NOTIFY"] != 'false' ? Notifier.turn_on : Notifier.turn_off
self
end
def start(options = {})
UI.clear if options[:clear]
setup(options)
Interactor.init_signal_traps
Dsl.evaluate_guardfile(options)
listener.on_change do |files|
Dsl.revaluate_guardfile if Watcher.match_guardfile?(files)
run { run_on_change_for_all_guards(files) } if Watcher.match_files?(guards, files)
end
UI.info "Guard is now watching at '#{Dir.pwd}'"
guards.each { |guard| supervised_task(guard, :start) }
listener.start
end
def run_on_change_for_all_guards(files)
guards.each do |guard|
paths = Watcher.match_files(guard, files)
unless paths.empty?
UI.debug "#{guard.class.name}#run_on_change with #{paths.inspect}"
supervised_task(guard, :run_on_change, paths)
end
end
# Reparse the whole directory to catch new files modified during the guards run
new_modified_files = listener.modified_files([Dir.pwd + '/'], :all => true)
listener.update_last_event
if !new_modified_files.empty? && Watcher.match_files?(guards, new_modified_files)
run { run_on_change_for_all_guards(new_modified_files) }
end
end
# Let a guard execute its task but
# fire it if his work leads to a system failure
def supervised_task(guard, task_to_supervise, *args)
guard.send(task_to_supervise, *args)
rescue Exception => ex
UI.error("#{guard.class.name} failed to achieve its <#{task_to_supervise.to_s}>, exception was:" +
"\n#{ex.class}: #{ex.message}\n#{ex.backtrace.join("\n")}")
guards.delete guard
UI.info("\n#{guard.class.name} has just been fired")
return ex
end
def run
listener.stop
UI.clear if options[:clear]
begin
yield
rescue Interrupt
end
listener.start
end
def add_guard(name, watchers = [], options = {})
if name.downcase == 'ego'
UI.deprecation("Guard::Ego is now part of Guard. You can remove it from your Guardfile.")
else
guard_class = get_guard_class(name)
@guards << guard_class.new(watchers, options)
end
end
def get_guard_class(name)
try_require = false
const_name = name.to_s.downcase.gsub('-', '')
begin
require "guard/#{name.to_s.downcase}" if try_require
self.const_get(self.constants.find {|c| c.to_s.downcase == const_name })
rescue TypeError
unless try_require
try_require = true
retry
else
UI.error "Could not find class Guard::#{const_name.capitalize}"
end
rescue LoadError
UI.error "Could not load 'guard/#{name.downcase}' or find class Guard::#{const_name.capitalize}"
end
end
def locate_guard(name)
if Gem::Version.create(Gem::VERSION) >= Gem::Version.create('1.8.0')
Gem::Specification.find_by_name("guard-#{name}").full_gem_path
else
Gem.source_index.find_name("guard-#{name}").last.full_gem_path
end
rescue
UI.error "Could not find 'guard-#{name}' gem path."
end
end
end