openconnect 3.18. homebrew formulae

openconnect.rb

require 'formula'

class Openconnect < Formula
  url 'ftp://ftp.infradead.org/pub/openconnect/openconnect-3.18.tar.gz'
  homepage 'http://www.infradead.org/openconnect.html'
  md5 '5a440ad946cfec0f1ee7ee5519081cf1'

  depends_on 'pkg-config' => :build
  depends_on 'gettext' => :build

  def install
    args = ["--prefix=#{prefix}"]
    if which_vpnc
      args << "--with-vpnc-script=#{which_vpnc}"
    else
      get_vpnc_script
      args << "--with-vpnc-script=#{HOMEBREW_PREFIX}/bin/vpnc-script"
    end
    system "./configure", *args
    system "make install"
  end

  def options
    [["--with-vpnc-script=</full/path/to/vpnc-script>", 'Location of the vpnc script']]
  end

  def get_vpnc_script
    curl  "http://git.infradead.org/users/dwmw2/vpnc-scripts.git/blob_plain/HEAD:/vpnc-script",
          "-o",
          "#{HOMEBREW_PREFIX}/bin/vpnc-script"
    chmod 0755, "#{HOMEBREW_PREFIX}/bin/vpnc-script"
  end

  def which_vpnc
    ARGV.each do |a|
      if a.index('--with-vpnc-script')
        return a.sub('--with-vpnc-script=', '')
      end
    end
    return false
  end

  def caveats; <<-EOS
    OpenConnect requires you to install the Mac OS X tun/tap driver.
    Get it here:
      http://tuntaposx.sourceforge.net/
    EOS
  end
end