master/lib/guard/watcher.rb

46 lines
1.1 KiB
Ruby

module Guard
class Watcher
attr_accessor :pattern, :action
def initialize(pattern, action = nil)
@pattern, @action = pattern, action
end
def self.match_files(guard, files)
guard.watchers.inject([]) do |paths, watcher|
files.each do |file|
if matches = watcher.match_file?(file)
if watcher.action
result = watcher.call_action(matches)
paths << Array(result) if result.respond_to?(:empty?) && !result.empty?
else
paths << matches[0]
end
end
end
paths.flatten.map { |p| p.to_s }
end
end
def self.match_files?(guards, files)
guards.any? do |guard|
guard.watchers.any? do |watcher|
files.any? { |file| watcher.match_file?(file) }
end
end
end
def match_file?(file)
file.match(@pattern)
end
def call_action(matches)
begin
@action.arity > 0 ? @action.call(matches) : @action.call
rescue
UI.error "Problem with watch action!"
end
end
end
end