1 files changed, 63 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..3a71f8d3f8
--- /dev/null
+++ b/railties/lib/rails/commands/runner.rb
@@ -0,0 +1,63 @@
+require 'optparse'
+require 'rbconfig'
+
+options = { environment: (ENV['RAILS_ENV'] || ENV['RACK_ENV'] || "development").dup }
+code_or_file = nil
+
+if ARGV.first.nil?
+  ARGV.push "-h"
+end
+
+ARGV.clone.options do |opts|
+  opts.banner = "Usage: rails runner [options] [<'Some.ruby(code)'> | <filename.rb>]"
+
+  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.") { $stdout.puts opts; exit }
+
+    opts.separator ""
+    opts.separator "Examples: "
+
+    opts.separator "    rails runner 'puts Rails.env'"
+    opts.separator "        This runs the code `puts Rails.env` after loading the app"
+    opts.separator ""
+    opts.separator "    rails runner path/to/filename.rb"
+    opts.separator "        This runs the Ruby file located at `path/to/filename.rb` after loading the app"
+
+  if RbConfig::CONFIG['host_os'] !~ /mswin|mingw/
+    opts.separator ""
+    opts.separator "You can also use runner as a shebang line for your executables:"
+    opts.separator "    -------------------------------------------------------------"
+    opts.separator "    #!/usr/bin/env #{File.expand_path($0)} runner"
+    opts.separator ""
+    opts.separator "    Product.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]
+
+require APP_PATH
+Rails.application.require_environment!
+Rails.application.load_runner
+
+if code_or_file.nil?
+  $stderr.puts "Run '#{$0} -h' for help."
+  exit 1
+elsif File.exist?(code_or_file)
+  $0 = code_or_file
+  Kernel.load code_or_file
+else
+  eval(code_or_file, binding, __FILE__, __LINE__)
+end