Sandbox::https://github.com/bradchoate/developer.github.com/blob/master/Rakefile

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require 'nanoc3/tasks'

desc "Compile the site"

task :compile do

`nanoc compile`

end

desc "Publish to http://developer.github.com"

task :publish => [:clean] do

FileUtils.rm_r('output') if File.exist?('output')

sh "nanoc compile"

ENV['GIT_DIR'] = File.expand_path(`git rev-parse --git-dir`.chomp)

old_sha = `git rev-parse refs/remotes/origin/gh-pages`.chomp

Dir.chdir('output') do

ENV['GIT_INDEX_FILE'] = gif = '/tmp/dev.gh.i'

ENV['GIT_WORK_TREE'] = Dir.pwd

File.unlink(gif) if File.file?(gif)

`git add -A`

tsha = `git write-tree`.strip

puts "Created tree #{tsha}"

if old_sha.size == 40

csha = `echo 'boom' | git commit-tree #{tsha} -p #{old_sha}`.strip

else

csha = `echo 'boom' | git commit-tree #{tsha}`.strip

end

puts "Created commit #{csha}"

puts `git show #{csha} --stat`

puts "Updating gh-pages from #{old_sha}"

`git update-ref refs/heads/gh-pages #{csha}`

`git push origin gh-pages`

end