cli.rb in brew-gem-0.8.2

- old
+ new

@@ -8,10 +8,11 @@
     "install"   => ("Install a brew gem, accepts an optional version argument\n" +
                     "            (e.g. brew gem install <name> [version])"),
     "upgrade"   => "Upgrade to the latest version of a brew gem",
     "uninstall" => "Uninstall a brew gem",
     "info"      => "Show information for an installed gem",
+    "formula"   => "Print out the generated formula for a gem",
     "help"      => "This message"
   }
 
   def help_msg
     (["Please specify a gem name (e.g. brew gem command <name>)"] +
@@ -40,14 +41,15 @@
 
     args[0..3]
   end
 
   def expand_formula(name, version, use_homebrew_ruby=false)
-    klass         = 'Gem' + name.capitalize.gsub(/[-_.\s]([a-zA-Z0-9])/) { $1.upcase }.gsub('+', 'x')
-    user_gemrc    = "#{ENV['HOME']}/.gemrc"
-    template_file = File.expand_path('../formula.rb.erb', __FILE__)
-    template      = ERB.new(File.read(template_file))
+    klass           = 'Gem' + name.capitalize.gsub(/[-_.\s]([a-zA-Z0-9])/) { $1.upcase }.gsub('+', 'x')
+    user_gemrc      = "#{ENV['HOME']}/.gemrc"
+    homebrew_prefix = ENV['HOMEBREW_PREFIX'] || `brew --prefix`.chomp
+    template_file   = File.expand_path('../formula.rb.erb', __FILE__)
+    template        = ERB.new(File.read(template_file))
     template.result(binding)
   end
 
   def with_temp_formula(name, version, use_homebrew_ruby)
     filename = File.join Dir.tmpdir, "gem-#{name}.rb"
@@ -72,10 +74,15 @@
     use_homebrew_ruby = homebrew_ruby == homebrew_ruby_flag
 
     version = fetch_version(name, supplied_version)
 
     with_temp_formula(name, version, use_homebrew_ruby) do |filename|
-      system "brew #{command} #{filename}"
-      exit $?.exitstatus unless $?.success?
+      case command
+      when "formula"
+        $stdout.puts File.read(filename)
+      else
+        system "brew #{command} #{filename}"
+        exit $?.exitstatus unless $?.success?
+      end
     end
   end
 end