2017-04-12 10:52:52 -04:00
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require 'listen'
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module Stylesheet
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class Watcher
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2017-07-27 21:20:09 -04:00
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def self.watch(paths = nil)
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2017-04-12 10:52:52 -04:00
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watcher = new(paths)
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watcher.start
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watcher
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end
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def initialize(paths)
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2017-08-09 11:06:27 -04:00
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@paths = paths || Watcher.default_paths
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2017-04-12 10:52:52 -04:00
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@queue = Queue.new
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end
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2017-08-09 11:06:27 -04:00
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def self.default_paths
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return @default_paths if @default_paths
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@default_paths = ["app/assets/stylesheets"]
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Discourse.plugins.each do |p|
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@default_paths << File.dirname(p.path).sub(Rails.root.to_s, '').sub(/^\//, '')
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end
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@default_paths
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end
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2017-04-12 10:52:52 -04:00
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def start
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Thread.new do
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begin
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while true
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worker_loop
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end
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rescue => e
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STDERR.puts "CSS change notifier crashed #{e}"
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end
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end
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root = Rails.root.to_s
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2017-08-16 12:59:21 -04:00
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listener_opts = { ignore: /xxxx/ }
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listener_opts[:force_polling] = true if ENV['FORCE_POLLING']
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2017-04-12 10:52:52 -04:00
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@paths.each do |watch|
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Thread.new do
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begin
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2017-08-16 12:59:21 -04:00
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listener = Listen.to("#{root}/#{watch}", listener_opts) do |modified, added, _|
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2017-04-12 10:52:52 -04:00
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paths = [modified, added].flatten
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paths.compact!
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2017-07-27 21:20:09 -04:00
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paths.map! { |long| long[(root.length + 1)..-1] }
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2017-04-12 10:52:52 -04:00
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process_change(paths)
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end
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rescue => e
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STDERR.puts "Failed to listen for CSS changes at: #{watch}\n#{e}"
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end
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2017-04-13 10:26:07 -04:00
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listener.start
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sleep
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2017-04-12 10:52:52 -04:00
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end
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end
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end
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def worker_loop
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@queue.pop
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while @queue.length > 0
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@queue.pop
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end
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2017-04-18 16:48:15 -04:00
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Stylesheet::Manager.cache.clear
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2017-04-12 10:52:52 -04:00
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message = ["desktop", "mobile", "admin"].map do |name|
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2018-03-09 01:47:57 -05:00
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{
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target: name,
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new_href: Stylesheet::Manager.stylesheet_href(name.to_sym),
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theme_key: SiteSetting.default_theme_key
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}
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2017-04-12 10:52:52 -04:00
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end
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MessageBus.publish '/file-change', message
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end
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def process_change(paths)
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paths.each do |path|
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if path =~ /\.(css|scss)$/
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@queue.push path
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end
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end
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end
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end
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end
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