Merge pull request #140 from jc00ke/foreman

---

Fixes #2

This is my first patch for JRuby, so any feedback would be appreciated. The specs do not run (Ill file a separate issue) but I am able to successfully start up & run the contents of a `Procfile`.

I based this patch on [launchys JRuby support](https://github.com/copiousfreetime/launchy/pull/10) and I too confirmed these changes did not break 1.8.7, 1.9.2 or 1.9.3.

Gemfile

@@ -2,6 +2,10 @@ source "http://rubygems.org"
 
 gemspec
 
+platform :jruby do
+  gem 'spoon', '~> 0.0.1'
+end
+
 group :development do
   gem 'parka'
   gem 'rake'

Gemfile.lock

@@ -17,6 +17,7 @@ GEM
     diff-lcs (1.1.3)
     fakefs (0.3.2)
     hpricot (0.8.2)
+    hpricot (0.8.2-java)
     mime-types (1.16)
     mustache (0.11.2)
     parka (0.6.2)
@@ -25,6 +26,7 @@ GEM
       thor
     rake (0.9.2.2)
     rcov (0.9.8)
+    rcov (0.9.8-java)
     rdiscount (1.6.5)
     rest-client (1.6.1)
       mime-types (>= 1.16)
@@ -42,11 +44,13 @@ GEM
       diff-lcs (~> 1.1.2)
     rspec-mocks (2.8.0)
     rubyzip (0.9.4)
+    spoon (0.0.1)
     term-ansicolor (1.0.7)
     thor (0.14.6)
     xml-simple (1.0.15)
 
 PLATFORMS
+  java
   ruby
 
 DEPENDENCIES
@@ -60,3 +64,4 @@ DEPENDENCIES
   rr (~> 1.0.2)
   rspec (~> 2.0)
   rubyzip
+  spoon (~> 0.0.1)

lib/foreman/process.rb

@@ -1,4 +1,6 @@
 require "foreman"
+require "rubygems"
+require "spoon" if RUBY_PLATFORM == "java"
 
 class Foreman::Process
 
@@ -27,15 +29,24 @@ class Foreman::Process
 
 private
 
+  def jruby?
+    defined?(RUBY_PLATFORM) and RUBY_PLATFORM == "java"
+  end
+
   def fork_with_io(command)
     reader, writer = IO.pipe
-    pid = fork do
-      trap("INT", "IGNORE")
-      writer.sync = true
-      $stdout.reopen writer
-      $stderr.reopen writer
-      reader.close
-      exec Foreman.runner, replace_command_env(command)
+    command = replace_command_env(command)
+    pid = if jruby?
+      Spoon.spawnp Foreman.runner, command
+    else
+      fork do
+        trap("INT", "IGNORE")
+        writer.sync = true
+        $stdout.reopen writer
+        $stderr.reopen writer
+        reader.close
+        exec Foreman.runner, command
+      end
     end
     [ reader, pid ]
   end