jflex 1.6.1 (new formula)

Closes Homebrew/homebrew#49626.

Signed-off-by: Tim D. Smith <git@tim-smith.us>

Formula/jflex.rb

@@ -0,0 +1,18 @@
+class Jflex < Formula
+  desc "Lexical analyzer generator for Java, written in Java."
+  homepage "http://jflex.de/"
+  url "http://jflex.de/release/jflex-1.6.1.zip"
+  sha256 "6da3c573db065f535c9b544e46ab4d49caa629b0354f8340df027f35e3368a51"
+
+  depends_on :java => "1.7+"
+
+  def install
+    libexec.install "lib/jflex-#{version}.jar"
+    bin.write_jar_script libexec/"jflex-#{version}.jar", "jflex"
+  end
+
+  test do
+    # jflex returns non-zero exit code on success, see https://github.com/jflex-de/jflex/issues/194
+    assert_equal "This is JFlex #{version}", shell_output("#{bin}/jflex --version", 1).strip
+  end
+end