watch_server

#!/usr/bin/env ruby

# SERVER_COMMAND = 'spin'
SERVER_COMMAND = 'script/server'

POLL_TIME = 1.1     # In Seconds

@states = {}

def check_for_changes
  changes = []
  Dir.glob("./**/*").reject do |file|
    file =~ %r{^\./(log|public|doc)}
  end.each do |file|
    unless File.symlink?(file)
      new_time = File.stat(file).mtime
      if @states[file] != new_time
        @states[file] = new_time
        changes << file
      end
    end
  end
  changes
end

p1 = fork { exec SERVER_COMMAND }

Signal.trap(0) do
  Process.kill("KILL", p1)
end

check_for_changes

loop do
  sleep POLL_TIME
  changes = check_for_changes
  unless changes.empty?
    print "\n\n\nChanges found..."
    p changes
    puts "\n\n"
    Process.kill("KILL", p1)
    p1 = fork { exec SERVER_COMMAND }
  end
end