require 'formula'

class Gdal < Formula
  homepage 'http://www.gdal.org/'
  url 'http://download.osgeo.org/gdal/1.11.0/gdal-1.11.0.tar.gz'
  sha1 '25efd2bffdea2e841377ca8c1fd49d89d02ac87e'

  bottle do
    sha1 "e6f7fd48a09a28796d3f721d0c208dd15a1310bb" => :mavericks
    sha1 "2e9f478b59008df1b96461a55a031522ab0ba7ad" => :mountain_lion
    sha1 "319300ab6951e4b25feb8475e28ac66deb16811a" => :lion
  end

  head do
    url 'https://svn.osgeo.org/gdal/trunk/gdal'
    depends_on 'doxygen' => :build
  end

  option 'complete', 'Use additional Homebrew libraries to provide more drivers.'
  option 'enable-opencl', 'Build with OpenCL acceleration.'
  option 'enable-armadillo', 'Build with Armadillo accelerated TPS transforms.'
  option 'enable-unsupported', "Allow configure to drag in any library it can find. Invoke this at your own risk."
  option 'enable-mdb', 'Build with Access MDB driver (requires Java 1.6+ JDK/JRE, from Apple or Oracle).'
  option "with-libkml", "Build with Google's libkml driver (requires libkml --HEAD or >= 1.3)"

  depends_on :python => :optional
  if build.with? "python"
    depends_on :fortran => :build
  end

  depends_on 'libpng'
  depends_on 'jpeg'
  depends_on 'giflib'
  depends_on 'libtiff'
  depends_on 'libgeotiff'
  depends_on 'proj'
  depends_on 'geos'

  depends_on 'sqlite' # To ensure compatibility with SpatiaLite.
  depends_on 'freexl'
  depends_on 'libspatialite'

  depends_on "postgresql" => :optional
  depends_on "mysql" => :optional

  depends_on 'homebrew/science/armadillo' if build.include? 'enable-armadillo'

  if build.with? "libkml"
    depends_on "autoconf" => :build
    depends_on "automake" => :build
    depends_on "libtool" => :build
  end

  if build.include? 'complete'
    # Raster libraries
    depends_on "homebrew/science/netcdf" # Also brings in HDF5
    depends_on "jasper"
    depends_on "webp"
    depends_on "cfitsio"
    depends_on "epsilon"
    depends_on "libdap"

    # Vector libraries
    depends_on "unixodbc" # OS X version is not complete enough
    depends_on "xerces-c"

    # Other libraries
    depends_on "xz" # get liblzma compression algorithm library from XZutils
    depends_on "poppler"
    depends_on "json-c"
  end

  # Extra linking libraries in configure test of armadillo may throw warning
  # see: https://trac.osgeo.org/gdal/ticket/5455
  # including prefix lib dir added by Homebrew:
  #    ld: warning: directory not found for option '-L/usr/local/Cellar/gdal/1.11.0/lib'
  patch do
    url "https://gist.githubusercontent.com/dakcarto/7abad108aa31a1e53fb4/raw/b56887208fd91d0434d5a901dae3806fb1bd32f8/gdal-armadillo.patch"
    sha1 "3af1cae94a977d55541adba0d86c697d77bd1320"
  end if build.include? "enable-armadillo"

  resource 'numpy' do
    url 'http://downloads.sourceforge.net/project/numpy/NumPy/1.8.1/numpy-1.8.1.tar.gz'
    sha1 '8fe1d5f36bab3f1669520b4c7d8ab59a21a984da'
  end

  resource "libkml" do
    # Until 1.3 is stable, use master branch
    url "https://github.com/google/libkml.git",
        :revision => "9b50572641f671194e523ad21d0171ea6537426e"
    version "1.3-dev"
  end

  def get_configure_args
    args = [
      # Base configuration.
      "--prefix=#{prefix}",
      "--mandir=#{man}",
      "--disable-debug",
      "--with-local=#{prefix}",
      "--with-threads",
      "--with-libtool",

      # GDAL native backends.
      "--with-pcraster=internal",
      "--with-pcidsk=internal",
      "--with-bsb",
      "--with-grib",
      "--with-pam",

      # Backends supported by OS X.
      "--with-libiconv-prefix=/usr",
      "--with-libz=/usr",
      "--with-png=#{Formula["libpng"].opt_prefix}",
      "--with-expat=/usr",
      "--with-curl=/usr/bin/curl-config",

      # Default Homebrew backends.
      "--with-jpeg=#{HOMEBREW_PREFIX}",
      "--without-jpeg12", # Needs specially configured JPEG and TIFF libraries.
      "--with-gif=#{HOMEBREW_PREFIX}",
      "--with-libtiff=#{HOMEBREW_PREFIX}",
      "--with-geotiff=#{HOMEBREW_PREFIX}",
      "--with-sqlite3=#{Formula["sqlite"].opt_prefix}",
      "--with-freexl=#{HOMEBREW_PREFIX}",
      "--with-spatialite=#{HOMEBREW_PREFIX}",
      "--with-geos=#{HOMEBREW_PREFIX}/bin/geos-config",
      "--with-static-proj4=#{HOMEBREW_PREFIX}",
      "--with-libjson-c=#{Formula["json-c"].opt_prefix}",

      # GRASS backend explicitly disabled.  Creates a chicken-and-egg problem.
      # Should be installed separately after GRASS installation using the
      # official GDAL GRASS plugin.
      "--without-grass",
      "--without-libgrass"
    ]

    # Optional Homebrew packages supporting additional formats.
    supported_backends = %w[
      liblzma
      cfitsio
      hdf5
      netcdf
      jasper
      xerces
      odbc
      dods-root
      epsilon
      webp
      poppler
    ]
    if build.include? 'complete'
      supported_backends.delete 'liblzma'
      args << '--with-liblzma=yes'
      args.concat supported_backends.map {|b| '--with-' + b + '=' + HOMEBREW_PREFIX}
    else
      args.concat supported_backends.map {|b| '--without-' + b} unless build.include? 'enable-unsupported'
    end

    # The following libraries are either proprietary, not available for public
    # download or have no stable version in the Homebrew core that is
    # compatible with GDAL. Interested users will have to install such software
    # manually and most likely have to tweak the install routine.
    #
    # Podofo is disabled because Poppler provides the same functionality and
    # then some.
    unsupported_backends = %w[
      gta
      ogdi
      fme
      hdf4
      openjpeg
      fgdb
      ecw
      kakadu
      mrsid
      jp2mrsid
      mrsid_lidar
      msg
      oci
      ingres
      dwgdirect
      idb
      sde
      podofo
      rasdaman
      sosi
    ]
    args.concat unsupported_backends.map {|b| '--without-' + b} unless build.include? 'enable-unsupported'

    # Database support.
    args << (build.with?("postgresql") ? "--with-pg=#{HOMEBREW_PREFIX}/bin/pg_config" : "--without-pg")
    args << (build.with?("mysql") ? "--with-mysql=#{HOMEBREW_PREFIX}/bin/mysql_config" : "--without-mysql")

    if build.include? 'enable-mdb'
      args << "--with-java=yes"
      # The rpath is only embedded for Oracle (non-framework) installs
      args << "--with-jvm-lib-add-rpath=yes"
      args << "--with-mdb=yes"
    end

    args << "--with-libkml=#{libexec}" if build.with? "libkml"

    # Python is installed manually to ensure everything is properly sandboxed.
    args << '--without-python'

    # Scripting APIs that have not been re-worked to respect Homebrew prefixes.
    #
    # Currently disabled as they install willy-nilly into locations outside of
    # the Homebrew prefix.  Enable if you feel like it, but uninstallation may be
    # a manual affair.
    #
    # TODO: Fix installation of script bindings so they install into the
    # Homebrew prefix.
    args << "--without-perl"
    args << "--without-php"
    args << "--without-ruby"

    args << (build.include?("enable-opencl") ? "--with-opencl" : "--without-opencl")
    args << (build.include?("enable-armadillo") ? "--with-armadillo=#{Formula["armadillo"].opt_prefix}" : "--with-armadillo=no")

    return args
  end

  def install
    if build.with? 'python'
      ENV.prepend_create_path 'PYTHONPATH', libexec+'lib/python2.7/site-packages'
      numpy_args = [ "build", "--fcompiler=gnu95",
                     "install", "--prefix=#{libexec}" ]
      resource('numpy').stage { system "python", "setup.py", *numpy_args }
    end

    if build.with? "libkml"
      resource("libkml").stage do
        # See main `libkml` formula for info on patches
        inreplace "configure.ac", "-Werror", ""
        inreplace "third_party/Makefile.am" do |s|
          s.sub! /(lib_LTLIBRARIES =) libminizip.la liburiparser.la/, "\\1"
          s.sub! /(noinst_LTLIBRARIES = libgtest.la libgtest_main.la)/,
                 "\\1 libminizip.la liburiparser.la"
          s.sub! /(libminizip_la_LDFLAGS =)/, "\\1 -static"
          s.sub! /(liburiparser_la_LDFLAGS =)/, "\\1 -static"
        end

        system "./autogen.sh"
        system "./configure", "--prefix=#{libexec}"
        system "make", "install"
      end
    end

    # Linking flags for SQLite are not added at a critical moment when the GDAL
    # library is being assembled. This causes the build to fail due to missing
    # symbols. Also, ensure Homebrew SQLite is used so that Spatialite is
    # functional.
    #
    # Fortunately, this can be remedied using LDFLAGS.
    sqlite = Formula["sqlite"]
    ENV.append 'LDFLAGS', "-L#{sqlite.opt_lib} -lsqlite3"
    ENV.append 'CFLAGS', "-I#{sqlite.opt_include}"
    # Needed by libdap
    ENV.libxml2 if build.include? 'complete'

    # Reset ARCHFLAGS to match how we build.
    ENV['ARCHFLAGS'] = "-arch #{MacOS.preferred_arch}"

    # Fix hardcoded mandir: http://trac.osgeo.org/gdal/ticket/5092
    inreplace 'configure', %r[^mandir='\$\{prefix\}/man'$], ''

    # These libs are statically linked in vendored libkml and libkml formula
    inreplace "configure", " -lminizip -luriparser", "" if build.with? "libkml"

    system "./configure", *get_configure_args
    system "make"
    system "make install"

    # `python-config` may try to talk us into building bindings for more
    # architectures than we really should.
    if MacOS.prefer_64_bit?
      ENV.append_to_cflags "-arch #{Hardware::CPU.arch_64_bit}"
    else
      ENV.append_to_cflags "-arch #{Hardware::CPU.arch_32_bit}"
    end

    cd 'swig/python' do
      system "python", "setup.py", "install", "--prefix=#{prefix}", "--record=installed.txt", "--single-version-externally-managed"
      bin.install Dir['scripts/*']
    end

    system 'make', 'man' if build.head?
    system 'make', 'install-man'
    # Clean up any stray doxygen files.
    Dir.glob("#{bin}/*.dox") { |p| rm p }
  end

  def caveats
    if build.include? 'enable-mdb'
      <<-EOS.undent

      To have a functional MDB driver, install supporting .jar files in:
        `/Library/Java/Extensions/`

      See: `http://www.gdal.org/ogr/drv_mdb.html`
      EOS
    end
  end

  test do
    # basic tests to see if third-party dylibs are loading OK
    system "#{bin}/gdalinfo", "--formats"
    system "#{bin}/ogrinfo", "--formats"
  end
end