class Tinysvm < Formula
  desc "Support vector machine library for pattern recognition"
  homepage "http://chasen.org/~taku/software/TinySVM/"
  url "http://chasen.org/~taku/software/TinySVM/src/TinySVM-0.09.tar.gz"
  sha256 "e377f7ede3e022247da31774a4f75f3595ce768bc1afe3de9fc8e962242c7ab8"

  bottle do
    cellar :any_skip_relocation
    sha256 "56f1afa09c931eb7e8dfaf46f1a814c1df306e4c20269ef78fddfbdf85a7251a" => :mojave
    sha256 "62f0920fdf8f5b7f29cebacc1add1396daef668c67e3d10644d9d35d1b49afc5" => :high_sierra
    sha256 "a6ad14c984b337bee83372ac6a29ffe7c0491180a302cfcd8f53b1a3ee6816e1" => :sierra
    sha256 "2b84b75043ba1d97172e2756e3da870a8ec8e074167ab5402e7a4e1b4c923864" => :el_capitan
    sha256 "ea90446332244176d4ec3bc4ff0c6175810c3a39d942f225bb55c0fb6252858d" => :yosemite
    sha256 "c3464518eb4a82d123939aca024c328d885c3f14e74df31b4deed9588bb495b1" => :mavericks
    sha256 "3d55eaafeeef653a2e41f6d521a2050dc9dac24cfdaf49ba21c311cbcdfa676d" => :mountain_lion
  end

  # Use correct compilation flag, via MacPorts.
  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/838f605/tinysvm/patch-configure.diff"
    sha256 "b4cd84063fd56cdcb0212528c6d424788528a9d6b8b0a17aa01294773c62e8a7"
  end

  def install
    # Needed to select proper getopt, per MacPorts
    ENV.append_to_cflags "-D__GNU_LIBRARY__"

    inreplace "configure", "-O9", "" # clang barfs on -O9

    system "./configure", "--disable-debug",
                          "--disable-dependency-tracking",
                          "--prefix=#{prefix}",
                          "--mandir=#{man}",
                          "--disable-shared"
    system "make", "install"
  end

  test do
    (testpath/"train.svmdata").write <<~EOS
      +1 201:1.2 3148:1.8 3983:1 4882:1
      -1 874:0.3 3652:1.1 3963:1 6179:1
      +1 1168:1.2 3318:1.2 3938:1.8 4481:1
      +1 350:1 3082:1.5 3965:1 6122:0.2
      -1 99:1 3057:1 3957:1 5838:0.3
    EOS

    (testpath/"train.svrdata").write <<~EOS
      0.23 201:1.2 3148:1.8 3983:1 4882:1
      0.33 874:0.3 3652:1.1 3963:1 6179:1
      -0.12 1168:1.2 3318:1.2 3938:1.8 4481:1
    EOS

    system "#{bin}/svm_learn", "-t", "1", "-d", "2", "-c", "train.svmdata", "test"
    system "#{bin}/svm_classify", "-V", "train.svmdata", "test"
    system "#{bin}/svm_model", "test"

    assert_predicate testpath/"test", :exist?
  end
end