a fssm-based watcher so that browsing is snappier. run rake watch to use it.

doc-src/Gemfile

@@ -1,3 +1,5 @@
+gem 'fssm'
 gem 'nanoc3', :require_as => false
 gem 'rdiscount'
+gem 'serve'
 gem 'thor'

doc-src/Rakefile

@@ -1 +1,62 @@
+require File.join(File.dirname(__FILE__), 'vendor/gems/environment')
 require 'nanoc3/tasks'
+$: << "lib"
+
+desc "watch for changes and recompile"
+task :watch do
+  require 'fssm'
+  require 'nanoc3'
+  require 'nanoc3/cli'
+  Dir['lib/commands/*.rb'].map{|d| d[4..-1]}.sort.each     { |f| require f }
+  Dir['lib/data_sources/*.rb'].map{|d| d[4..-1]}.sort.each { |f| require f }
+  Nanoc3::NotificationCenter.on(:compilation_started) do |rep|
+    puts "Compiling: #{rep.path}"
+  end
+
+  rebuild_site = lambda do |base, relative|
+    if relative
+      puts ">>> Change Detected to #{relative} <<<"
+    else
+      puts ">>> Compiling <<<"
+    end
+    start = Time.now
+    # Nanoc3::CLI::Base.new.run(["co"])
+    site = Nanoc3::Site.new('.')
+    site.load_data
+    begin
+      site.compiler.run
+      puts ">>> Done in #{((Time.now - start)*10000).round.to_f / 10}ms <<<"
+      `growlnotify -m "Compilation Complete" --image misc/success-icon.png; exit 0`
+    rescue Exception => e
+      puts ">>> ERROR: #{e.message} <<<"
+      `growlnotify -m "Compilation Error!" --image misc/error-icon.png; exit 0`
+    end
+  end
+  rebuild_site.call(nil,nil)
+
+  puts ">>> Watching for Changes <<<"
+  puts "Run: ./bin/serve .."
+  monitor = FSSM::Monitor.new
+  monitor.path("#{File.dirname(__FILE__)}/content", '**/*') do
+    update(&rebuild_site)
+    delete(&rebuild_site)
+    create(&rebuild_site)
+  end
+  monitor.path("#{File.dirname(__FILE__)}/lib", '**/*') do
+    update(&rebuild_site)
+    delete(&rebuild_site)
+    create(&rebuild_site)
+  end
+  monitor.path("#{File.dirname(__FILE__)}/layouts", '**/*') do
+    update(&rebuild_site)
+    delete(&rebuild_site)
+    create(&rebuild_site)
+  end
+  monitor.path("#{File.dirname(__FILE__)}/assets", '**/*') do
+    update(&rebuild_site)
+    delete(&rebuild_site)
+    create(&rebuild_site)
+  end
+  monitor.run
+end
+