Rakefile

def rst2html
  xs = %w(rst2html rst2html.py)
  xs = xs.map {|x| `which #{x}`.chomp}.delete_if {|x| x == ""}
  r  = xs[0]
  r || (raise "rst2html not found")
end

desc "Builds mpv's manual"
task :build_mpv_manual do
  unless File.exists?('mpv')
    system "git clone https://github.com/mpv-player/mpv.git mpv"
  end
  system("cd mpv && git checkout master && git pull origin master")
  system([
    rst2html,
    '--template=rst2html_template',
    '--strip-elements-with-class=contents',
    '--no-toc-backlinks',
    'mpv/DOCS/man/mpv.rst',
    'source/manual/_master.html.erb'
  ].join(' '))

  ver = `git -C mpv tag -l --contains $(git -C mpv rev-list --tags --max-count=1) | tail -1`
  File.write("source/manual/_stable_version.html.erb", ver)
  system("git -C mpv checkout #{ver}")
  system([
    rst2html,
    '--template=rst2html_template',
    '--strip-elements-with-class=contents',
    '--no-toc-backlinks',
    'mpv/DOCS/man/mpv.rst',
    'source/manual/_stable.html.erb'
  ].join(' '))
end

desc 'Generate site in CI and commit results'
task :travis => :build_mpv_manual do
  preserve = ['.git']
  preserve.each { |x| File.rename "build/#{x}", "tmp_#{x}" }
  system "bundle exec middleman build --verbose"
  preserve.each { |x| File.rename "tmp_#{x}", "build/#{x}" }
  system "cd build && git config user.name 'nadeko'"
  system "cd build && git config user.email 'nadeko@ci'"
  system [
    "cd build",
    "git add -A .",
    "git commit -m 'CI autodeploy'"].join(" && ")
end