Rakefile

require 'rake'
require 'rake/clean'
require 'rbconfig'
require 'digest/md5'
require 'fileutils'
include RbConfig
include FileUtils

module FileUtils
	def fu_output_message(msg)
		puts msg if $verbose
	end
end

module OS
	def OS.windows?
		(/cygwin|mswin|mingw|bccwin|wince|emx/ =~ RUBY_PLATFORM) != nil
	end

	def OS.mac?
		(/darwin/ =~ RUBY_PLATFORM) != nil
	end

	def OS.unix?
		!OS.windows?
	end

	def OS.linux?
		OS.unix? and not OS.mac?
	end
end

RakeFileUtils.verbose_flag = false

OBJ_DIR = 'obj'
SO_DIR = 'lib/sfml'
DOC_DIR = 'doc'
EXT_DIR = './ext'
INST_DIR = File.join(CONFIG['sitearchdir'], "sfml")

SFML_INC = ENV['SFML_INCLUDE']
SFML_LIB = ENV['SFML_LIB']

GLEW_INC = ENV['GLEW_INCLUDE']
GLEW_LIB = ENV['GLEW_LIB']

RUBY_INC = CONFIG['rubyhdrdir']
RUBY_LIB = CONFIG['libdir']
RUBY_LINK = CONFIG['SOLIBS'] + (CONFIG['ENABLE_SHARED'] == 'yes' ? CONFIG['LIBRUBYARG_SHARED'] : CONFIG['LIBRUBYARG_STATIC'])

CXX = CONFIG['CXX']
CXXFLAGS = "-std=c++11 #{SFML_INC ? "-I#{SFML_INC}" : ''} #{GLEW_INC ? "-I#{GLEW_INC}" : ''} -I#{RUBY_INC} -I#{RUBY_INC}/#{CONFIG['arch']} -DGLEW_BUILD"

LINK = CONFIG['LDSHAREDXX'].sub("$(if $(filter-out -g -g0,#{CONFIG['debugflags']}),,-s)", "")
LINK_FLAGS = "#{CONFIG['DLDFLAGS']} #{CONFIG['LDFLAGS']} #{SFML_LIB ? "-L#{SFML_LIB}" : ''} #{GLEW_LIB ? "-L#{GLEW_LIB}" : ''} -L#{RUBY_LIB} #{RUBY_LINK}".sub("$(DEFFILE)", "")

SRCS = {:rbsfml    => FileList.new("#{EXT_DIR}/rbsfml/*.cpp")}

SHARED = []

LIBS = []
OBJS = {}
SRCS.each_key {|file| LIBS << "#{SO_DIR}/#{file}.#{CONFIG['DLEXT']}"}

CLEAN.include(OBJ_DIR)
CLOBBER.include(SO_DIR)
CLOBBER.include(DOC_DIR)

desc "Turn on verbose mode."
task :verbose do
	$verbose = true
	CXXFLAGS << " -Wall -Wextra "
	puts RUBY_DESCRIPTION
	puts ""
	puts "OBJ_DIR    = #{OBJ_DIR.inspect}"
	puts "SO_DIR     = #{SO_DIR.inspect}"
	puts "DOC_DIR    = #{DOC_DIR.inspect}"
	puts "EXT_DIR    = #{EXT_DIR.inspect}"
	puts "INST_DIR   = #{INST_DIR.inspect} (#{"not " unless File.exist?(INST_DIR)}found)"
	puts ""
	puts "SFML_INC   = #{SFML_INC.inspect} (#{"not " unless File.exist?(SFML_INC)}found)"
	puts "SFML_LIB   = #{SFML_LIB.inspect} (#{"not " unless File.exist?(SFML_LIB)}found)"
  puts ""
  puts "GLEW_INC   = #{GLEW_INC.inspect} (#{"not " unless File.exist?(GLEW_INC)}found)"
  puts "GLEW_LIB   = #{GLEW_LIB.inspect} (#{"not " unless File.exist?(GLEW_LIB)}found)"
	puts ""
	puts "RUBY_INC   = #{RUBY_INC.inspect} (#{"not " unless File.exist?(RUBY_INC)}found)"
	puts "RUBY_LIB   = #{RUBY_LIB.inspect} (#{"not " unless File.exist?(RUBY_LIB)}found)"
	puts "RUBY_LINK  = #{RUBY_LINK.inspect}"
	puts ""
	puts "CXX        = #{CXX.inspect}"
	puts "CXXFLAGS   = #{CXXFLAGS.inspect}"
	puts ""
	puts "LINK       = #{LINK.inspect}"
	puts "LINK_FLAGS = #{LINK_FLAGS.inspect}"
	puts ""
end

def calc_md5(src)
	list = SRCS[src]
	OBJS[src] = []
	list.each do |file|
		code = File.read(file)
		digest = Digest::MD5.hexdigest(code)
		s = ".s" if ARGV.include? "static"
		OBJS[src] << "#{OBJ_DIR}/#{File.basename(file)}.#{digest}#{s}.o"
	end
	#if src == :sfml
	#	OBJS[:sfml] += OBJS[:audio] + OBJS[:graphics] + OBJS[:window] + OBJS[:system]
	#end
end

def compile_o(src)
	calc_md5(src)
	mkdir_p OBJ_DIR
	defines = []
	defines << "SFML_STATIC" if ARGV.include? "static"
	#if ARGV.include? "sfml"
	#	defines << "RBSFML_SYSTEM"
	#	defines << "RBSFML_WINDOW"
	#	defines << "RBSFML_GRAPHICS"
	#	defines << "RBSFML_AUDIO"
	#	defines << "RBSFML_SFML"
	#else
	#	defines << "RBSFML_#{src.to_s.upcase}"
	#end
	d = defines.map{|m|"-D#{m}"}.join(" ")
	SRCS[src].each_with_index do |file, i|
		obj = OBJS[src][i]
		next if File.exist?(obj)
		puts "Compiling #{file}"
		sh "#{CXX} #{CXXFLAGS} -c #{file} -o #{obj} #{d}"
	end
end

def create_so(src)
	so = "#{SO_DIR}/#{src}.#{CONFIG['DLEXT']}"
	mkdir_p SO_DIR
	puts "Creating #{so}"
	objs = OBJS[src].join(" ")
	s = "-s" if ARGV.include? "static"
	sfml_link = case src
	#							when :audio;    "-lsfml-audio#{s} -lsfml-system#{s}"
	#							when :graphics; "-lsfml-graphics#{s} -lsfml-window#{s} -lsfml-system#{s}"
	#							when :window;   "-lsfml-window#{s} -lsfml-system#{s}"
	#							when :system;   "-lsfml-system#{s}"
	#							when :sfml;     "-lsfml-audio#{s} -lsfml-graphics#{s} -lsfml-window#{s} -lsfml-system#{s}"
								when :rbsfml;   "-lsfml-audio#{s} -lsfml-graphics#{s} -lsfml-window#{s} -lsfml-system#{s}"
							end
	if ARGV.include? "static"
		external_link = "-lfreetype -ljpeg "
		external_link += "-lglew -lGL -lopenal" unless OS.windows?
		external_link += "-lglew32 -lgdi32 -lopengl32 -lopenal32 -lwinmm" if OS.windows?
	end
	sh "#{LINK} #{objs} -o #{so} #{LINK_FLAGS} #{sfml_link} #{external_link}"
end

task :default => [:rbsfml]

desc "Link statically against SFML."
task :static do
	unless ARGV.any? {|arg| ["rbsfml"].include? arg }
		ARGV << "rbsfml"
		Rake::Task["rbsfml"].invoke
	end
end

#desc "Build all modules."
#task :all => [:system, :window, :graphics, :audio, :extra] do
#	compile_o(:all)
#	create_so(:all)
#end

#desc "Build audio module (audio.#{CONFIG['DLEXT']})."
#task :audio => [:system] do
#	SRCS[:audio] += SHARED
#	compile_o(:audio)
#	create_so(:audio)
#end

#desc "Build graphics module (graphics.#{CONFIG['DLEXT']})."
#task :graphics => [:system, :window] do
#	SRCS[:graphics] += SHARED
#	compile_o(:graphics)
#	create_so(:graphics)
#end

#desc "Build window module (window.#{CONFIG['DLEXT']})."
#task :window => [:system] do
#	SRCS[:window] += SHARED
#	compile_o(:window)
#	create_so(:window)
#end

#desc "Build system module (system.#{CONFIG['DLEXT']})."
#task :system do
#	SRCS[:system] += SHARED
#	compile_o(:system)
#	create_so(:system)
#end

#desc "Build all modules as a single file (sfml.#{CONFIG['DLEXT']})."
#task :sfml do
#	SRCS[:sfml] += SHARED
#	compile_o(:system)
#	compile_o(:window)
#	compile_o(:graphics)
#	compile_o(:audio)
#	compile_o(:sfml)
#	create_so(:sfml)
#end

desc "Build all modules as a single file (rbsfml.#{CONFIG['DLEXT']})."
task :rbsfml do
	SRCS[:rbsfml] += SHARED
	compile_o(:rbsfml)
	create_so(:rbsfml)
end

desc "Install rbSFML."
task :install => [:uninstall] do
	mkdir_p SO_DIR
	list = FileList.new("#{SO_DIR}/*.#{CONFIG['DLEXT']}")
	if list.size == 0
		puts "Nothing to install."
	else
		mkdir_p INST_DIR
		puts "Installing library to #{INST_DIR}"
		list.each do |file|
			puts "Installing #{file}..."
			copy_file(file, File.join(INST_DIR, File.basename(file)))
		end
	end
end

desc "Uninstall rbSFML."
task :uninstall do
	if !File.exist?(INST_DIR)
		puts "Nothing to uninstall."
	else
		puts "Uninstalling library from #{INST_DIR}"
		remove_dir(INST_DIR, true)
	end
end

desc "Run tests."
task :test do
	ARGV.replace []
	if $verbose
		ARGV << "-v"
	end

	sh "rspec spec"
end

desc "Run samples."
task :samples do
	cd "samples"
	Dir.entries(".").select{|e| e =~ /\.rb$/ }.each do |sample|
		ruby("#{sample}", verbose: true) { }
	end
end

desc "Build Ruby Gem."
task :gem => [:rbsfml] do
	sh 'gem build rbsfml.gemspec'
end