erbcheck.rb

#!/usr/bin/env ruby

require 'erb'
require 'find'
require 'open3'

require 'rubygems'
begin
  require 'colorize'
rescue LoadError
  abort "Please install the `colorize' gem"
end

trap(:SIGINT) { puts "\nThanks!"; exit }

Find.find(Dir.pwd) do |path|
  next unless File.file?(path)
  next unless File.extname(path) == '.erb'
  next if path =~ /vendor/  
  short_path = path[(Dir.pwd.size + 1)..-1]
  source = ERB.new(File.read(path), 0, '-').src
  error = Open3.popen3('ruby -c') do |stdin, stdout, stderr|
    stdin.write source
    stdin.close
    if stdout.read == ""
      stderr.read
    end
  end
  unless error
    puts short_path.colorize(:green)
  else
    puts short_path.colorize(:red).underline
    puts error.split(/\r?\n/).map { |l| "  #{l}" }.join("\n")
  end
  next
end