mmongo in ruby

mmongo.rb

#!/usr/bin/env ruby

# mmongo: An alternative to "meteor mongo" that lets you pass any
# arguments to mongo after the -- argument, as in:
# mmongo myapp.meteor.com -- myfile.js
#
# I rewrote this with more features in JavaScript with Node.js: 
# https://github.com/skagedal/mmongo 

require 'uri'
require 'open3'

split_point = ARGV.index('--')
if split_point
  meteor_args = ARGV.take(split_point)
  mongo_args = ARGV.drop(split_point + 1)
else
  meteor_args = ARGV
  mongo_args = []
end

out, status = Open3.capture2("meteor", "mongo", "--url", *meteor_args)

if status.exitstatus != 0
  abort("mmongo: meteor mongo --url with arguments #{meteor_args.inspect} failed with status #{status.exitstatus}")
end

uri = URI(out)

port = uri.port ? ":#{uri.port}" : ""
cmdline = ["mongo", "#{uri.host}#{port}#{uri.path}"]
cmdline += ["-u", uri.user] if uri.user
cmdline += ["-p", uri.password] if uri.password
cmdline += mongo_args

exec(*cmdline)