require "formula"

class Leptonica < Formula
  desc "Image processing and image analysis library"
  homepage "http://www.leptonica.org/"
  url "http://www.leptonica.org/source/leptonica-1.72.tar.gz"
  sha256 "79d5eadd32658c9fea38700c975d60aa3d088eaa3e307659f004d40834de1f56"

  bottle do
    cellar :any
    sha256 "6f46198e077161bd40654e29da0bb26243701dcb75069ef169542f006c3b745b" => :yosemite
    sha256 "a4d35adcbf811eb48a2dec51bc6e7dcd3ecf61a0c716ae10de0e55c9eaec5065" => :mavericks
    sha256 "2c747c2e33de6c93958e34353bdad7c9ce41dfbcbc4588cb19411d8956445895" => :mountain_lion
  end

  depends_on "libpng" => :recommended
  depends_on "jpeg" => :recommended
  depends_on "libtiff" => :recommended
  depends_on "giflib" => :optional
  depends_on "openjpeg" => :optional
  depends_on "webp" => :optional
  depends_on "pkg-config" => :build

  conflicts_with "osxutils",
    :because => "both leptonica and osxutils ship a `fileinfo` executable."

  def install
    args = %W[
      --disable-dependency-tracking
      --prefix=#{prefix}
    ]

    %w[libpng jpeg libtiff giflib].each do |dep|
      args << "--without-#{dep}" if build.without?(dep)
    end
    %w[openjpeg webp].each do |dep|
      args << "--with-lib#{dep}" if build.with?(dep)
      args << "--without-lib#{dep}" if build.without?(dep)
    end

    system "./configure", *args
    system "make install"
  end

  test do
    (testpath/"test.cpp").write <<-EOS
    #include <iostream>
    #include <leptonica/allheaders.h>

    int main(int argc, char **argv) {
        std::fprintf(stdout, "%d.%d", LIBLEPT_MAJOR_VERSION, LIBLEPT_MINOR_VERSION);
        return 0;
    }
    EOS

    flags = ["-I#{include}/leptonica"] + ENV.cflags.to_s.split
    system ENV.cxx, "test.cpp", *flags
    assert_equal version.to_s, `./a.out`
  end
end