Class: Lather::Watcher

Inherits:
Object
  • Object
show all
Defined in:
lib/lather/watcher.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*globs, &callback) ⇒ Watcher

Returns a new instance of Watcher.

Raises:

  • (ArgumentError) 


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# File 'lib/lather/watcher.rb', line 6

def initialize *globs, &callback
  raise ArgumentError, "need a callback" unless block_given?
  @callback = callback

  @options = { :force => false, :sleep => 1 }
  @options.merge!(globs.pop) if globs.last.is_a? Hash

  @globs = globs.flatten
  @files = find_files
end

Instance Attribute Details

#files ⇒ Object (readonly)

Returns the value of attribute files.



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# File 'lib/lather/watcher.rb', line 3

def files
  @files
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/lather/watcher.rb', line 4

def options
  @options
end

Instance Method Details

#go! ⇒ Object 



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# File 'lib/lather/watcher.rb', line 17

def go!
  @timestamp = Time.now

  @callback[@files.keys] if @options[:force]

  loop do
    unless (changed = update_files_and_timestamp).empty?
      @callback[changed]
    end

    Kernel.sleep @options[:sleep]
  end
end