Add Gemfile, Rakefile and Rackup file for local dev

Author: nicksieger

Gemfile

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+source :rubygems
+
+gem "jekyll"
+gem "rack"
+gem "jruby-openssl", :platform => "jruby"

Gemfile.lock

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+GEM
+  remote: http://rubygems.org/
+  specs:
+    albino (1.3.3)
+      posix-spawn (>= 0.3.6)
+    bouncy-castle-java (1.5.0146.1)
+    classifier (1.3.3)
+      fast-stemmer (>= 1.0.0)
+    directory_watcher (1.4.1)
+    fast-stemmer (1.0.0)
+    jekyll (0.11.0)
+      albino (>= 1.3.2)
+      classifier (>= 1.3.1)
+      directory_watcher (>= 1.1.1)
+      kramdown (>= 0.13.2)
+      liquid (>= 1.9.0)
+      maruku (>= 0.5.9)
+    jruby-openssl (0.7.4)
+      bouncy-castle-java
+    kramdown (0.13.3)
+    liquid (2.2.2)
+    maruku (0.6.0)
+      syntax (>= 1.0.0)
+    posix-spawn (0.3.6)
+    rack (1.3.2)
+    syntax (1.0.0)
+
+PLATFORMS
+  java
+  ruby
+
+DEPENDENCIES
+  jekyll
+  jruby-openssl
+  rack

Rakefile

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+begin
+  require 'bundler/setup'
+rescue LoadError
+  puts "Please install Bundler and run 'bundle install' to ensure you have all dependencies"
+end
+
+desc "Clean the site"
+task :clean do
+  rm_rf "_site"
+end
+
+desc "Generate the site using Jekyll"
+task :generate => :check_pygments do
+  ruby "-S bundle exec jekyll"
+end
+task :gen => :generate
+task :default => :generate
+
+desc "Run a file server that serves and regenerates the files"
+task :server  do
+  ruby "-S bundle exec rackup"
+end
+
+task :check_pygments do
+  `pygmentize -V`
+  $?.success? or raise "Pygments not installed, see http://pygments.org/docs/installation/"
+end

config.ru

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+# -*- ruby -*-
+#
+# This rackup file runs the equivalent of jekyll --server --auto, but
+# uses Rack to add a couple of rewrite rules to make it equivalent to the
+# Apache configuration.
+
+### This section copied from bin/jekyll file
+require 'jekyll'
+
+options = Jekyll.configuration({})
+source      = options['source']
+destination = options['destination']
+
+# Files to watch
+def globs(source)
+  Dir.chdir(source) do
+    dirs = Dir['*'].select { |x| File.directory?(x) }
+    dirs -= ['_site']
+    dirs = dirs.map { |x| "#{x}/**/*" }
+    dirs += ['*']
+  end
+end
+
+# Create the Site
+site = Jekyll::Site.new(options)
+
+# Watch for updates
+require 'directory_watcher'
+
+puts "Auto-regenerating enabled: #{source} -> #{destination}"
+
+dw = DirectoryWatcher.new(source)
+dw.interval = 1
+dw.glob = globs(source)
+
+dw.add_observer do |*args|
+  t = Time.now.strftime("%Y-%m-%d %H:%M:%S")
+  puts "[#{t}] regeneration: #{args.size} files changed"
+  site.process
+end
+
+dw.start
+
+### Rackup server stuff starts here
+
+# Emulate the following Apache config:
+# * / => /index.html
+# * RewriteRule ([^.]+)$ $1.html
+# * ErrorDocument 404 /404.html
+class DotHtmlRewriter
+  def initialize(app, fourohfour)
+    @app = app
+    @fourohfour = fourohfour
+  end
+
+  def call(env)
+    env["PATH_INFO"] += "index.html" if env["PATH_INFO"] =~ /\/$/
+    result = @app.call(env)
+    if result[0] == 404 && env["PATH_INFO"] !~ /\.html$/
+      env["PATH_INFO"] += ".html"
+      second_result = @app.call(env)
+      if second_result[0] != 404
+        result = second_result
+      else
+        result[2] = [File.read(@fourohfour)]
+        result[1]["Content-Type"] = "text/html"
+        result[1]["Content-Length"] = result[2][0].length.to_s
+      end
+    end
+    result
+  end
+end
+
+puts "Server running on http://localhost:9292"
+use DotHtmlRewriter, "#{destination}/404.html"
+run Rack::File.new(destination)