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|
# frozen_string_literal: true
module Listen
module Adapter
# Adapter implementation for Windows `wdm`.
#
class Windows < Base
OS_REGEXP = /mswin|mingw|cygwin/i.freeze
BUNDLER_DECLARE_GEM = <<-EOS.gsub(/^ {6}/, '')
Please add the following to your Gemfile to avoid polling for changes:
gem 'wdm', '>= 0.1.0' if Gem.win_platform?
EOS
def self.usable?
return false unless super
require 'wdm'
true
rescue LoadError
Listen.logger.debug format('wdm - load failed: %s:%s', $ERROR_INFO,
$ERROR_POSITION * "\n")
Listen.adapter_warn(BUNDLER_DECLARE_GEM)
false
end
private
def _configure(dir)
require 'wdm'
Listen.logger.debug 'wdm - starting...'
@worker ||= WDM::Monitor.new
@worker.watch_recursively(dir.to_s, :files) do |change|
yield([:file, change])
end
@worker.watch_recursively(dir.to_s, :directories) do |change|
yield([:dir, change])
end
@worker.watch_recursively(dir.to_s, :attributes, :last_write) do |change|
yield([:attr, change])
end
end
def _run
@worker.run!
end
# rubocop:disable Metrics/MethodLength
def _process_event(dir, event)
Listen.logger.debug "wdm - callback: #{event.inspect}"
type, change = event
full_path = Pathname(change.path)
rel_path = full_path.relative_path_from(dir).to_s
options = { change: _change(change.type) }
case type
when :file
_queue_change(:file, dir, rel_path, options)
when :attr
unless full_path.directory?
_queue_change(:file, dir, rel_path, options)
end
when :dir
case change.type
when :removed
# TODO: check if watched dir?
_queue_change(:dir, dir, Pathname(rel_path).dirname.to_s, {})
when :added
_queue_change(:dir, dir, rel_path, {})
# do nothing - changed directory means either:
# - removed subdirs (handled above)
# - added subdirs (handled above)
# - removed files (handled by _file_callback)
# - added files (handled by _file_callback)
# so what's left?
end
end
end
# rubocop:enable Metrics/MethodLength
def _change(type)
{ modified: [:modified, :attrib], # TODO: is attrib really passed?
added: [:added, :renamed_new_file],
removed: [:removed, :renamed_old_file] }.find do |change, types|
types.include?(type) and break change
end
end
end
end
end
|
