gistfile1.rb

REE_VERSION = "20090201"
VENDOR_RUBY_VERSION = begin
	data = File.read("version.h")
	data =~ /RUBY_VERSION "(.*)"/
	$1
end
DISTDIR = "ruby-enterprise-#{VENDOR_RUBY_VERSION}-#{REE_VERSION}"
RUBYGEMS_URL = "http://rubyforge.org/frs/download.php/45905/rubygems-1.3.1.tgz"
RUBYGEMS_PACKAGE = RUBYGEMS_URL.sub(/.*\//, '')

desc "Create a distribution directory"
task :distdir do
	create_distdir
end

desc "Create a distribution package"
task :package do
	create_distdir
	ENV['GZIP'] = '--best'
	sh "tar -czf #{DISTDIR}.tar.gz #{DISTDIR}"
	sh "rm -rf #{DISTDIR}"
end

desc "Test the installer script"
task :test_installer do
	distdir = "/tmp/r8ee-test"
	create_distdir(distdir)
	sh "#{distdir}/installer #{ENV['ARGS']}"
end

desc "Auto-install into a fake root directory"
task :fakeroot do
	distdir = "/tmp/r8ee-test"
	create_distdir(distdir)
	sh "rm -rf fakeroot"
	sh "mkdir fakeroot"
	fakeroot = File.expand_path("fakeroot")
	sh "#{distdir}/installer --auto='/usr/local' --destdir='#{fakeroot}' #{ENV['ARGS']}"
	each_elf_binary(fakeroot) do |filename|
	#	sh "strip --strip-debug '#{filename}'"
	end
	puts "*** Ruby Enterprise Edition has been installed to #{fakeroot}"
end

desc "Create a Debian package."
task 'package:debian' => :fakeroot do
	sh "cp -R distro/debian fakeroot/DEBIAN"
	sh "fakeroot dpkg -b fakeroot ruby-enterprise_#{VENDOR_RUBY_VERSION}-#{REE_VERSION}_amd64.deb"
end

# Check whether the specified command is in $PATH, and return its
# absolute filename. Returns nil if the command is not found.
#
# This function exists because system('which') doesn't always behave
# correctly, for some weird reason.
def self.find_command(name)
	ENV['PATH'].split(File::PATH_SEPARATOR).detect do |directory|
		path = File.join(directory, name.to_s)
		if File.executable?(path)
			return path
		end
	end
	return nil
end

def download(url)
	if find_command('wget')
		sh "wget", RUBYGEMS_URL
	else
		sh "curl", "-O", "-L", RUBYGEMS_URL
	end
end

def create_distdir(distdir = DISTDIR)
	sh "rm -rf #{distdir}"
	sh "mkdir #{distdir}"
	
	sh "mkdir #{distdir}/source"
	sh "git archive HEAD | tar -C #{distdir}/source -xf -"
	Dir.chdir("#{distdir}/source") do
		sh "autoconf"
		sh 'rm', '-rf', 'autom4te.cache'
		system 'bison', '-y', '-o', 'parse.c', 'parse.y'
	end
	
	sh "cp distro/installer distro/installer.rb distro/platform_info.rb " <<
		"distro/dependencies.rb distro/optparse.rb #{distdir}/"
	sh "cd #{distdir} && ln -s source/distro/runtime ."
	File.open("#{distdir}/version.txt", "w") do |f|
		f.write("#{VENDOR_RUBY_VERSION}-#{REE_VERSION}")
	end
	
	if !File.exist?("distro/#{RUBYGEMS_PACKAGE}")
		Dir.chdir("distro") do
			download(RUBYGEMS_URL)
		end
	end
	rubygems_package = File.expand_path("distro/#{RUBYGEMS_PACKAGE}")
	Dir.chdir(distdir) do
		sh "tar", "xzf", rubygems_package
		sh "mv rubygems* rubygems"
	end
end

def elf_binary?(filename)
	if File.executable?(filename)
		return File.read(filename, 4) == "\177ELF"
	else
		return false
	end
end

def each_elf_binary(dir, &block)
	Dir["#{dir}/*"].each do |filename|
		if File.directory?(filename)
			each_elf_binary(filename, &block)
		elsif elf_binary?(filename)
			block.call(filename)
		end
	end
end