RubyMotion/data/6.0/Rakefile

require 'fileutils'
require 'rubygems'
require 'nokogiri'

def die(*msg)
  $stderr.puts msg
  exit 1
end

xcode = '/Applications/Xcode45-DP4.app'
sdk_version = '6.0'
die "Xcode 4.5 must be installed as '#{xcode}'" unless File.exist?(xcode)

sdk = File.join(xcode, "Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator#{sdk_version}.sdk")
die "Can't locate SDK as '#{sdk}'" unless File.exist?(sdk)
sdk_frameworks = File.join(sdk, 'System/Library/Frameworks')

bridgesupport_dir = File.join(File.dirname(__FILE__), 'BridgeSupport')
iphoneos_dir = File.join(File.dirname(__FILE__), 'iPhoneOS')
iphonesimulator_dir = File.join(File.dirname(__FILE__), 'iPhoneSimulator')

task :apply_exceptions do
  Dir.glob(File.join(sdk_frameworks, "**/*.h")).each do |h|
    h_orig = h + '.orig'
    next if File.exist?(h_orig)
    txt = File.read(h)
    txt.force_encoding(Encoding::ASCII_8BIT) if txt.respond_to?(:force_encoding)
    # workaround for new objc enum parsing bug
    changed = true if txt.gsub!(/NS_(ENUM|OPTIONS)\(([^\s,]+)\s*,\s*([^)]+)\)/, '\2 \3; enum')
    case File.basename(h) 
      when 'CTRunDelegate.h'
        # workaround for missing symbol bug in CoreText headers
        changed = true if txt.sub!(/^(CFTypeID CTRunDelegateGetTypeID)/m, '//\1')
      when 'NSCompoundPredicate.h'
        # workaround for weird ivar name masked by preprocessor macro
        changed = true if txt.sub!(/NSUInteger\s+_type;/, 'NSUInteger _name;')
    end
    if changed
      FileUtils.cp h, h_orig
      File.open(h, 'w') { |io| io.write txt }
    end
  end
end

task :remove_exceptions do
  Dir.glob(File.join(sdk_frameworks, "**/*.h")).each do |h|
    h_orig = h + '.orig'
    FileUtils.mv h_orig, h if File.exist?(h_orig)
  end
end

task :bridgesupport do
  FileUtils.mkdir_p bridgesupport_dir
  Dir.glob(File.join(sdk_frameworks, '*.framework')).each do |framework_path|
    framework = File.basename(framework_path, '.framework')
    next if ['Kernel', 'System', 'IOKit'].include?(framework)
    next unless File.exist?(File.join(framework_path, framework))
    next unless File.exist?(File.join(framework_path, 'Headers'))
    dest = File.join(bridgesupport_dir, "#{framework}.bridgesupport")
    next if File.exist?(dest)
    a = sdk_version.scan(/(\d+)\.(\d+)/)[0]
    sdk_version_headers = ((a[0].to_i * 10000) + (a[1].to_i * 100)).to_s
    sh "/usr/bin/gen_bridge_metadata --format complete --no-64-bit --cflags \"-isysroot #{sdk} -miphoneos-version-min=#{sdk_version} -D__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__=#{sdk_version_headers} -framework #{framework}\" --framework #{sdk_frameworks}/#{framework}.framework > #{dest}"
  end
end

task :stubs do
  Dir.glob(File.join(bridgesupport_dir, '*.bridgesupport')) do |bs_path|
    framework = File.basename(bs_path).sub(/\.bridgesupport/, '')
    includes = case framework
      when 'OpenGLES'
        ['OpenGLES/EAGLDrawable.h']
      else
        ['UIKit/UIKit.h', "#{framework}/#{framework}.h"]
    end

    # Generate code.
    code = File.join(bridgesupport_dir, "#{framework}_stubs.m")
    unless File.exist?(code)
      text = ''
      includes.each { |inc| text << "#import <#{inc}>\n" }
      doc = Nokogiri::XML(File.read(bs_path))
      did_something = false
      doc.xpath("/signatures/function[@inline=\"true\"]").each do |node|
        name = node['name'].to_s
        retval = node.xpath('./retval')[0]['declared_type'].to_s
        args = node.xpath('./arg').map { |node| node['declared_type'].to_s }
        proto = "#{retval} __concrete__#{name}("
        proto << (0...args.size).to_a.map { |i| "#{args[i]} arg#{i}" }.join(', ')
        proto << ")"
        func = ''
        func << proto
        func << "\n{\n  "
        func << "  return " if retval != 'void'
        func << name << '('
        func << (0...args.size).to_a.map { |i| "arg#{i}" }.join(', ')
        func << ");\n}\n\n"
        text << func
        did_something = true
      end
      next unless did_something
      File.open(code, 'w') { |io| io.write(text) }

      # Compile code.
      [%w{iPhoneOS armv6 armv7}, %w{iPhoneSimulator i386}].each do |platform, *archs|
        obj = File.join(platform, "#{framework}_stubs.o")
        next if File.exist?(obj)
        platform_dev = File.join(xcode, "Contents/Developer/Platforms/#{platform}.platform/Developer")
        cflags = "-isysroot #{platform_dev}/SDKs/#{platform}#{sdk_version}.sdk "
        cflags << archs.map { |a| "-arch #{a}" }.join(' ')
        cflags << " -miphoneos-version-min=#{sdk_version} -Wall -Werror -O3 -fobjc-abi-version=2 -fobjc-legacy-dispatch"
        sh "#{platform_dev}/usr/bin/gcc #{cflags} #{code} -c -o #{obj}"
      end
    end
  end
end

desc "Update RubyMotion to latest SDK beta"
task :update  => [:apply_exceptions, :bridgesupport, :remove_exceptions, :stubs]

desc "Clean up generated files"
task :clean do
  Dir.glob(File.join(bridgesupport_dir, '*.{m,bridgesupport}')).each do |bs|
    FileUtils.rm_f bs unless File.basename(bs) == 'RubyMotion.bridgesupport'
  end
  %w{iPhoneOS iPhoneSimulator}.each do |platform|
    Dir.glob(File.join(platform, "*.o")).each { |o| FileUtils.rm_f o }
  end
end