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# frozen_string_literal: true
require 'thor'
require 'listen'
require 'logger'
module Listen
class CLI < Thor
default_task :start
desc 'start', 'Starts Listen'
class_option :verbose,
type: :boolean,
default: false,
aliases: '-v',
banner: 'Verbose'
class_option :directory,
type: :array,
default: ['.'],
aliases: '-d',
banner: 'One or more directories to listen to'
class_option :relative,
type: :boolean,
default: false,
aliases: '-r',
banner: 'Convert paths relative to current directory'
def start
Listen::Forwarder.new(options).start
end
end
class Forwarder
attr_reader :logger
def initialize(options)
@options = options
@logger = ::Logger.new(STDOUT, level: ::Logger::INFO)
@logger.formatter = proc { |_, _, _, msg| "#{msg}\n" }
end
def start
logger.info 'Starting listen...'
directory = @options[:directory]
relative = @options[:relative]
callback = proc do |modified, added, removed|
if @options[:verbose]
logger.info "+ #{added}" unless added.empty?
logger.info "- #{removed}" unless removed.empty?
logger.info "> #{modified}" unless modified.empty?
end
end
listener = Listen.to(*directory, relative: relative, &callback)
listener.start
sleep 0.5 while listener.processing?
end
end
end
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