ruby fsevent wrapper to sync directories

dirsync-monitor.rb

#!/usr/bin/env ruby
#requires osx fsevent
#requires growl with network registration enabled (at least once)
#requires the below rubygems
#requires rsync

require 'rubygems'
require 'rb-fsevent'
require 'ruby-growl'

local='/Volumes/Work/dev/'
remote='dev:/home/username/dev/'

# Decide on the local path.
Dir.mkdir(local) unless File.directory?(local)
local = File.expand_path(local)

# Parse the server and remote path.  Decide on the remote username.
raise unless remote =~ /^(?:([^@]+)@)?([^:]+):(.+)$/
    user, server, remote = $1, $2, $3
user ||= ENV["USER"]

g = Growl.new("localhost", "dirsync-monitor", ["dirsync-monitor Push"])
g.notify("dirsync-monitor Push", "Watch Started", "#{local} => #{remote}")

fsevent = FSEvent.new
fsevent.watch local do |directories|
    #$stderr.puts "# detected change inside: #{directories.inspect}"
    directories.each do |dir|
        pathname2 = "#{dir.sub(local, "")}"
        #ignore some stuff
        if pathname2.match('/\.svn/.*$') != nil || 
            pathname2.match('/\.hg/.*$') != nil || 
            pathname2.match('/compile/$') != nil || 
            pathname2.match('/cache/$') != nil then
            next
        end
        l = "#{local}#{pathname2}".gsub(' ', '\\\\ ')
        r =  "#{user}@#{server}:#{remote}#{pathname2}".gsub(' ', '\\\\ ')

        cmd = "rsync -tzplr --delete-after --exclude='/*/*' --exclude='custom.ini' --exclude='.svn' --exclude='.hg' --exclude='compile' --exclude='cache' --exclude='*.swp' #{l} #{r}"
        #$stderr.puts cmd
        g.notify("dirsync-monitor Push", "Sync", "#{l} => #{r}")
        system(cmd)
    end
end
fsevent.run