require 'kde-build/build_system/base'

require 'kde-build/tools/make'

module BuildTool

    module BuildSystem

        class CMakeConfiguration < BaseConfiguration

            option( 'options', "Command line options for cmake" )
            option( 'cmake-prefix-path', "CMAKE_PREFIX_PATH environment variable" )

            def initialize
                super
                self.name = "cmake"
            end

        end

        class CMake < BuildSystem::Base

            def initialize( mod )
                super
            end

            def self.guess( path )
                return File.exist? "#{path}/CMakeLists.txt"
            end

            def self.config
                CMakeConfiguration
            end

            # Execute a cmake command in the context of the build directory
            def cmake( command, wd = build_directory )
                myenv = env
                myenv['CMAKE_PREFIX_PATH'] = cmake_prefix_path
                self.class.execute "cmake #{command}", wd, env
            end

            def cmake_prefix_path
                @configuration.cmake_prefix_path
            end

            def make( command = "", wd = build_directory )
                BuildTool::Make.new.make "#{command}", wd
            end

            def build( target )
                check_build_directory( true )
                make target
            end

            def reconfigure( clean )
                if clean
                    return false if make( "clean" ) != 0
                end
                return false if self.class.execute( "rm #{build_directory}/CMakeCache.txt" ) != 0
                configure
            end

            def configure
                check_build_directory( true )
                opt = options
                opt += " -DCMAKE_INSTALL_PREFIX=#{prefix}" if prefix
                rc = cmake "#{self.source_directory} #{opt}"
                rc
            end

            def configured?
                File.exist? "#{build_directory}/Makefile"
            end

            def info
                super
                puts "  CMAKE_PREFIX_PATH:   #{cmake_prefix_path}"
            end

            def name
                "CMake"
            end

            def options
                @configuration.options
            end

            Registry.register( 'CMake', CMake )

        end

    end

end