From 3179e6d69e3ee8973327d6f0eea5d47c998dcba4 Mon Sep 17 00:00:00 2001
From: Adam Vandenberg <flangy@gmail.com>
Date: Tue, 8 Apr 2014 20:39:28 -0700
Subject: [PATCH] closure-compiler: requires Java 7

Closes Homebrew/homebrew#27938.
---
 Formula/closure-compiler.rb | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Formula/closure-compiler.rb b/Formula/closure-compiler.rb
index 1bbe9d02c7..ba597669f8 100644
--- a/Formula/closure-compiler.rb
+++ b/Formula/closure-compiler.rb
@@ -1,5 +1,17 @@
 require 'formula'
 
+class Java7 < Requirement
+  fatal true
+
+  def satisfied?
+    `java -version`.split("\n")[0] =~ /"1\.7/
+  end
+
+  def message
+    "Java 7 is required."
+  end
+end
+
 class ClosureCompiler < Formula
   homepage 'http://code.google.com/p/closure-compiler/'
   url 'https://code.google.com/p/closure-compiler/', :using => :git, :tag => 'v20140303'
@@ -7,6 +19,7 @@ class ClosureCompiler < Formula
   head 'https://code.google.com/p/closure-compiler/', :using => :git
 
   depends_on :ant
+  depends_on Java7
 
   def install
     system "ant", "clean"