aws-cfn-tools: drop AmazonWebServicesFormula

Formula/aws-cfn-tools.rb

@@ -1,22 +1,34 @@
-require 'formula'
+class AwsCfnTools < Formula
+  homepage "https://aws.amazon.com/developertools/AWS-CloudFormation/2555753788650372"
+  url "https://s3.amazonaws.com/cloudformation-cli/AWSCloudFormation-cli.zip"
+  version "1.0.12"
+  sha1 "1d308682effb9366b95cf2abf501c464d29ee012"
 
-class AwsCfnTools < AmazonWebServicesFormula
-  homepage 'http://aws.amazon.com/developertools/AWS-CloudFormation/2555753788650372'
-  url 'https://s3.amazonaws.com/cloudformation-cli/AWSCloudFormation-cli.zip'
-  version '1.0.12'
-  sha1 '1d308682effb9366b95cf2abf501c464d29ee012'
+  depends_on "ec2-api-tools"
+  depends_on :java
 
-  depends_on 'ec2-api-tools'
+  def install
+    env = Language::Java.java_home_env.merge(:AWS_CLOUDFORMATION_HOME => libexec)
+    rm Dir["bin/*.cmd"] # Remove Windows versions
+    libexec.install Dir["*"]
+    Pathname.glob("#{libexec}/bin/*") do |file|
+      next if file.directory?
+      basename = file.basename
+      next if basename.to_s == "service"
+      (bin/basename).write_env_script file, env
+    end
+  end
 
   def caveats
-    s = standard_instructions "AWS_CLOUDFORMATION_HOME"
-    s += <<-EOS.undent
-      export AWS_CREDENTIAL_FILE="<Path to the credentials file>"
-
-      Create the credential files with chmod 600 permissions containing two lines:
-      AWSAccessKeyId=<Your AWS Access ID>
-      AWSSecretKey=<Your AWS Secret Key>
+    <<-EOS.undent
+      Before you can use these tools you must export some variables to your $SHELL.
+        export AWS_ACCESS_KEY="<Your AWS Access ID>"
+        export AWS_SECRET_KEY="<Your AWS Secret Key>"
+        export AWS_CREDENTIAL_FILE="<Path to the credentials file>"
     EOS
-    return s
+  end
+
+  test do
+    assert_match version.to_s, shell_output("#{bin}/cfn-version")
   end
 end