flawfinder 1.31

Closes Homebrew/homebrew#38949.

Signed-off-by: Xu Cheng <xucheng@me.com>

Formula/flawfinder.rb

@@ -1,15 +1,24 @@
-require 'formula'
-
 class Flawfinder < Formula
-  homepage 'http://www.dwheeler.com/flawfinder/'
-  url 'http://www.dwheeler.com/flawfinder/flawfinder-1.27.tar.gz'
-  sha1 '0af702c1e0cbd0385a78be6ef1f2f7752ba6193f'
-  head 'git://git.code.sf.net/p/flawfinder/code'
+  homepage "http://www.dwheeler.com/flawfinder/"
+  url "http://www.dwheeler.com/flawfinder/flawfinder-1.31.tar.gz"
+  mirror "https://downloads.sourceforge.net/project/flawfinder/flawfinder-1.31.tar.gz"
+  sha256 "bca7256fdf71d778eb59c9d61fc22b95792b997cc632b222baf79cfc04887c30"
+
+  head "git://git.code.sf.net/p/flawfinder/code"
+
+  resource "flaws" do
+    url "http://www.dwheeler.com/flawfinder/test.c"
+    sha256 "4a9687a091b87eed864d3e35a864146a85a3467eb2ae0800a72e330496f0aec3"
+  end
 
   def install
-    system "make", "INSTALL_DIR=#{prefix}",
-                   "INSTALL_DIR_BIN=#{bin}",
-                   "INSTALL_DIR_MAN=#{man1}",
-                   "install"
+    system "make", "prefix=#{prefix}", "install"
+  end
+
+  test do
+    resource("flaws").stage do
+      assert_match "Hits = 36",
+                   shell_output("#{bin}/flawfinder test.c")
+    end
   end
 end