specify a remote packages.yml on github

brewpack

@@ -2,10 +2,11 @@
 require 'yaml'
 require 'optparse'
 require 'set'
+require 'net/http'
 
 $filename = './packages.yml'
 
-$default_options = { 'update' => true, 'doctor' => true, 'prune' => true, 'analytics' => true, }
+$default_options = { 'update' => true, 'doctor' => true, 'prune' => true, 'analytics' => true }
 
 $user_packages = YAML.load_file($filename) || {}
 
@@ -31,6 +32,18 @@ def cask_install(cask, save = false)
  command "brew cask install #{cask}", "Installing cask '#{cask}'"
 end
 
+def install_formulae formulae
+ STDOUT.puts 'Installing packages with brew'
+ formulae['packages'].each do |package|
+ brew_install package
+ end
+
+ STDOUT.puts 'Installing applications with brew cask'
+ formulae['casks'].each do |cask|
+ cask_install cask
+ end
+end
+
 def install
  options = $default_options.merge($user_packages['options'])
 
@@ -52,17 +65,9 @@ def install
  command 'brew analytics off', 'Opting out of homebrew analytics'
  end
 
- STDOUT.puts 'Installing packages with brew'
- $user_packages['packages'].each do |package|
- brew_install package
- end
-
  command 'brew tap caskroom/cask', 'Setting up brew cask'
 
- STDOUT.puts 'Installing applications with brew cask'
- $user_packages['casks'].each do |cask|
- cask_install cask
- end
+ install_formulae $user_packages
 
  STDOUT.puts 'install complete'
 end
@@ -76,13 +81,24 @@ OptionParser.new do |op|
  op.on('-s', '--save', 'install one formula and add to your packages.yml file') do |val|
  $opts[:save] = true
  end
+ op.on('-r', '--repo REPO', "install formula from someone's packages.yml on GitHub") do |repo|
+ $opts[:repo] = repo
+ end
 end.parse!
 
 case ARGV[0]
 when 'install', 'i'
  if ARGV[1]
  formula = ARGV[1]
  $opts[:cask] ? cask_install(formula, $opts[:save]) : brew_install(formula, $opts[:save])
+ elsif $opts[:repo]
+ uri = URI("https://raw.githubusercontent.com/#{$opts[:repo]}/master/packages.yml")
+ response = Net::HTTP.get_response(uri)
+ unless (response.code == '200')
+ STDOUT.puts 'Could not find packages.yml file. Specify in the format "user/repo" e.g. "rouanw/test-packages". The repo must contain a valid "packages.yml" file at its root.'
+ exit 1
+ end
+ install_formulae YAML.load(response.body)
  else
  install
  end