require 'rdoc/task'

versions = {

"trunk" => "trunk",

"2.5.0" => "ruby_2_5",

"2.4.0" => "ruby_2_4",

"2.3.0" => "ruby_2_3",

}

versions.each do |version, branch_name|

source_dir = "sources/#{version}"

directory source_dir do

sh "git clone --depth=1 --branch=#{branch_name} git://github.com/ruby/ruby.git #{source_dir}"

end

desc "Checks out source for #{version}"

task "source:#{version}" => source_dir

desc "Updates source for #{version}"

task "update:#{version}" => source_dir do

Dir.chdir source_dir do

sh "git fetch origin"

sh "git reset origin/#{branch_name} --hard"

end

end

desc "Compile source for #{version}"

task "compile:#{version}" => source_dir do

Dir.chdir source_dir do

sh "make clean" if File.exists?("Makefile")

sh "autoconf && ./configure && make"

end

end

namespace :rdoc do

lang_version = File.join("en", version)

RDoc::Task.new(lang_version) do |rdoc|

rdoc.title = "Documentation for Ruby #{version}"

rdoc.main = "README.md"

rdoc.rdoc_dir = version

rdoc.rdoc_files << source_dir

rdoc.options << "-U"

rdoc.options << "--all"

rdoc.options << "--root=#{source_dir}"

rdoc.options << "--page-dir=#{source_dir}/doc"

rdoc.options << "--encoding=UTF-8"

end

end

task "rdoc:#{version}" => ["update:#{version}", "compile:#{version}"]

end

desc "Checks out sources for all versions"

task "source" => versions.keys.map { |version| "source:#{version}" }

desc "Updates sources for all versions"

task "update" => versions.keys.map { |version| "update:#{version}" }

desc "Build RDoc HTML files for all versions"

task "rdoc" => versions.keys.map { |version| "rdoc:#{version}" }