homebrew-core/Formula/bgrep.rb

class Bgrep < Formula
  desc "Like grep but for binary strings"
  homepage "https://github.com/tmbinc/bgrep"
  url "https://github.com/tmbinc/bgrep/archive/bgrep-0.2.tar.gz"
  sha256 "24c02393fb436d7a2eb02c6042ec140f9502667500b13a59795388c1af91f9ba"

  def install
    system ENV.cc, ENV.cflags, "-o", "bgrep", "bgrep.c"
    bin.install "bgrep"
  end

  test do
    path = testpath/"hi.prg"
    path.binwrite [0x00, 0xc0, 0xa9, 0x48, 0x20, 0xd2, 0xff,
                   0xa9, 0x49, 0x20, 0xd2, 0xff, 0x60,
                  ].pack("C*")

    assert_equal ["#{path}: 00000004", "#{path}: 00000009"],
                 shell_output("#{bin}/bgrep 20d2ff #{path}").split("\n")
  end
end