def make(makedir)
  Dir.chdir(makedir) do
    sh(PLATFORM =~ /win32/ ? 'nmake' : 'make')
  end
end


def extconf(dir)
  Dir.chdir(dir) do ruby "extconf.rb" end
end


def setup_tests
  Rake::TestTask.new do |t|
    t.libs << "test"
    t.test_files = FileList['test/test*.rb']
    t.verbose = true
  end
end


def setup_clean otherfiles
  files = ['build/*', '**/*.o', '**/*.so', '**/*.a', 'lib/*-*', '**/*.log'] + otherfiles
  CLEAN.include(files)
end


def setup_rdoc files
  Rake::RDocTask.new do |rdoc|
    rdoc.rdoc_dir = 'doc/rdoc'
    rdoc.options << '--line-numbers'
    rdoc.rdoc_files.add(files)
  end
end


def setup_extension(dir, extension)
  ext = "ext/#{dir}"
  ext_so = "#{ext}/#{extension}.#{Config::CONFIG['DLEXT']}"
  ext_files = FileList[
    "#{ext}/*.c",
    "#{ext}/*.h",
    "#{ext}/extconf.rb",
    "#{ext}/Makefile",
    "lib"
  ] 

  task "lib" do
    directory "lib"
  end

  desc "Builds just the #{extension} extension"
  task extension.to_sym => ["#{ext}/Makefile", ext_so ]

  file "#{ext}/Makefile" => ["#{ext}/extconf.rb"] do
    extconf "#{ext}"
  end

  file ext_so => ext_files do
    make "#{ext}"
    cp ext_so, "lib"
  end
end


def base_gem_spec(pkg_name, pkg_version)
  pkg_version = pkg_version
  pkg_name    = pkg_name
  pkg_file_name = "#{pkg_name}-#{pkg_version}"
  Gem::Specification.new do |s|
    s.name = pkg_name
    s.version = pkg_version
    s.platform = Gem::Platform::RUBY
    s.has_rdoc = true
    s.extra_rdoc_files = [ "README" ]

    s.files = %w(COPYING LICENSE README Rakefile) +
      Dir.glob("{bin,doc/rdoc,test}/**/*") + 
      Dir.glob("ext/**/*.{h,c,rb}") +
      Dir.glob("examples/**/*.rb") +
      Dir.glob("tools/*.rb") + 
      Dir.glob(RUBY_PLATFORM !~ /mswin/ ? "lib/**/*.rb" : "lib/**/*")

    s.require_path = "lib"
    s.extensions = FileList["ext/**/extconf.rb"].to_a
    s.bindir = "bin"
  end
end

def setup_gem(pkg_name, pkg_version)
  spec = base_gem_spec(pkg_name, pkg_version)
  yield spec if block_given?


  Rake::GemPackageTask.new(spec) do |p|
    p.gem_spec = spec
    p.need_tar = true if RUBY_PLATFORM !~ /mswin/
  end
end

def sub_project(project, *targets)
  targets.each do |target|
    Dir.chdir "projects/#{project}" do
      sh %{rake --trace #{target.to_s} }
    end
  end
end

# Conditional require rcov/rcovtask if present
begin
  require 'rcov/rcovtask'
  
  Rcov::RcovTask.new do |t|
    t.test_files = FileList['test/test*.rb']
    t.rcov_opts << "-x /usr"
    t.output_dir = "test/coverage"
  end
rescue Object
end