1 files changed, 54 insertions, 0 deletions
diff --git a/railties/lib/rails/commands/runner.rb b/railties/lib/rails/commands/runner.rb
new file mode 100644
index 0000000000..510128318a
--- /dev/null
+++ b/railties/lib/rails/commands/runner.rb
@@ -0,0 +1,54 @@
+require 'optparse'
+
+options = { :environment => (ENV['RAILS_ENV'] || "development").dup }
+code_or_file = nil
+
+ARGV.clone.options do |opts|
+  script_name = File.basename($0)
+  opts.banner = "Usage: #{$0} [options] ('Some.ruby(code)' or a filename)"
+
+  opts.separator ""
+
+  opts.on("-e", "--environment=name", String,
+          "Specifies the environment for the runner to operate under (test/development/production).",
+          "Default: development") { |v| options[:environment] = v }
+
+  opts.separator ""
+
+  opts.on("-h", "--help",
+          "Show this help message.") { $stderr.puts opts; exit }
+
+  if RUBY_PLATFORM !~ /mswin/
+    opts.separator ""
+    opts.separator "You can also use runner as a shebang line for your scripts like this:"
+    opts.separator "-------------------------------------------------------------"
+    opts.separator "#!/usr/bin/env #{File.expand_path($0)}"
+    opts.separator ""
+    opts.separator "Product.find(:all).each { |p| p.price *= 2 ; p.save! }"
+    opts.separator "-------------------------------------------------------------"
+  end
+
+  opts.order! { |o| code_or_file ||= o } rescue retry
+end
+
+ARGV.delete(code_or_file)
+
+ENV["RAILS_ENV"] = options[:environment]
+RAILS_ENV.replace(options[:environment]) if defined?(RAILS_ENV)
+
+require RAILS_ROOT + '/config/environment'
+
+begin
+  if code_or_file.nil?
+    $stderr.puts "Run '#{$0} -h' for help."
+    exit 1
+  elsif File.exist?(code_or_file)
+    eval(File.read(code_or_file), nil, code_or_file)
+  else
+    eval(code_or_file)
+  end
+ensure
+  if defined? Rails
+    Rails.logger.flush if Rails.logger.respond_to?(:flush)
+  end
+end