findent 3.1.3 (new formula)

Closes #47946.

Signed-off-by: Izaak Beekman <zbeekman@gmail.com>

Formula/findent.rb

@@ -0,0 +1,24 @@
+class Findent < Formula
+  desc "Indent and beautify Fortran sources and generate dependency information"
+  homepage "https://www.ratrabbit.nl/ratrabbit/content/findent/introduction"
+  url "https://downloads.sourceforge.net/project/findent/findent-3.1.3.tar.gz"
+  sha256 "046c2a274536bd29a07385019c51b3c63e6b553df25b45b41b757b5cf2dab607"
+
+  def install
+    system "./configure", "--disable-debug",
+                          "--disable-dependency-tracking",
+                          "--disable-silent-rules",
+                          "--prefix=#{prefix}"
+    system "make", "install"
+    (pkgshare/"test").install %w[test/progfree.f.in test/progfree.f.try.f.ref]
+  end
+
+  test do
+    cp_r pkgshare/"test/progfree.f.in", testpath
+    cp_r pkgshare/"test/progfree.f.try.f.ref", testpath
+    flags = File.open(testpath/"progfree.f.in", &:readline).sub(/ *[!] */, "").chomp
+    system "#{bin}/findent #{flags} < progfree.f.in > progfree.f.out.f90"
+    assert_predicate testpath/"progfree.f.out.f90", :exist?
+    assert compare_file(testpath/"progfree.f.try.f.ref", testpath/"progfree.f.out.f90")
+  end
+end