watch.rb

gistfile1.txt

#!/usr/bin/env ruby
# watch.rb by Brett Terpstra, 2011 <http://brettterpstra.com>
# with credit to Carlo Zottmann <https://github.com/carlo/haml-sass-file-watcher>
# modified for Chrome by vil, 2015-05-16

trap("SIGINT") { exit }

if ARGV.length < 2
  puts "Usage: #{$0} watch_folder keyword"
  puts "Example: #{$0} . mywebproject"
  exit
end

dev_extension = 'dev'
filetypes = ['css','html','htm','php','rb','erb','less','js']
watch_folder = ARGV[0]
keyword = ARGV[1]
puts "Watching #{watch_folder} and subfolders for changes in project files..."

while true do
  files = []
  filetypes.each {|type|
    files += Dir.glob( File.join( watch_folder, "**", "*.#{type}" ) )
  }
  new_hash = files.collect {|f| [ f, File.stat(f).mtime.to_i ] }
  hash ||= new_hash
  diff_hash = new_hash - hash

  unless diff_hash.empty?
    hash = new_hash

    diff_hash.each do |df|
      puts "Detected change in #{df[0]}, refreshing"
      %x{osascript<<ENDGAME
            tell application "Google Chrome"
            set windowList to every window
            repeat with aWindow in windowList
                set tabList to every tab of aWindow
                repeat with atab in tabList
                    if (URL of atab contains "#{keyword}") then
                      reload atab
                    end if
                end repeat
            end repeat
            end tell
ENDGAME
}
    end
  end

  sleep 1
end