rdup: 1.1.14 (new formula)

Closes Homebrew/homebrew#16617.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/rdup.rb

@@ -0,0 +1,48 @@
+require 'formula'
+
+class LibarchiveHeader < Formula
+  url 'https://raw.github.com/libarchive/libarchive/8076b31490c90aaf0edccecf760004c30bd95edc/libarchive/archive.h'
+  sha1 '03c57e135cad9ca9d52604324d798ca1115838ce'
+  version '3.0.4'
+end
+class LibarchiveEntryHeader < Formula
+  url 'https://raw.github.com/libarchive/libarchive/8076b31490c90aaf0edccecf760004c30bd95edc/libarchive/archive_entry.h'
+  sha1 '7eaee18321409fbb249cb59e9997757c740d7ecf'
+  version '3.0.4'
+end
+
+class Rdup < Formula
+  homepage 'http://miek.nl/projects/rdup/index.html'
+  url 'http://miek.nl/projects/rdup/rdup-1.1.14.tar.bz2'
+  sha1 '49dc7570122bfa362f36a26a2ffa8bfe8ad55182'
+
+  depends_on 'automake' => :build
+  depends_on 'nettle'
+  depends_on 'pcre'
+  depends_on 'glib'
+
+  def install
+    ENV.deparallelize
+    # to pick up locally downloaded libarchive headers
+    ENV.append 'CFLAGS', "-I."
+
+    system "./configure", "--prefix=#{prefix}"
+
+    # let rdup know that we actually have dirfd
+    system "echo '#define HAVE_DIRFD 1' >> config.h"
+
+    # get required libarchive headers (they don't come with OS X,
+    #   although libarchive itself is there)
+    LibarchiveHeader.new.brew { cp "archive.h", buildpath }
+    LibarchiveEntryHeader.new.brew { cp "archive_entry.h", buildpath }
+
+    system "make", "install"
+  end
+
+  def test
+    # tell rdup to archive itself, then let rdup-tr make a tar archive of it,
+    # and test with tar and grep whether the resulting tar archive actually
+    # contains rdup
+    system "#{bin}/rdup /dev/null #{bin}/rdup | #{bin}/rdup-tr -O tar | tar tvf - | grep #{bin}/rdup"
+  end
+end