Rakefile

require 'time'

def convert_block_area(file_name)
  flag_in_block = false
  lines = IO.readlines(file_name).map do |l|
    if l.chomp.match /(\s*)```(.*)$/
      if flag_in_block
        flag_in_block = false
        "{% endhighlight %}\n"
      else
        if $2.length > 0
          flag_in_block = true
          "#{$1}{% highlight #{$2} %}\n"
        else
          l
        end
      end
    else
      l
    end
  end

  File.open(file_name,'w') do |f|
    f.puts lines
  end
end

desc "Auto Check on my jekyll server."
task :autocheck do
  exec "god start -c .autocheck.god"
end

desc "Check Github update and build on my jekyll server."
task :check_and_build do
  Dir.chdir File.expand_path('..',__FILE__)
  remote_head = `git ls-remote origin`.lines.map(&:split).first[0]
  locale_head = `git show-ref`.lines.map(&:split).first[0]

  unless remote_head == locale_head
    system 'git checkout .'
    system 'git pull origin master > /dev/null'
    system "jekyll build"
  end
end


desc "Build my site ..."
task :build do
  Dir.chdir File.expand_path('..',__FILE__)
  Dir['_posts/*.md'].each do |md_file|
    convert_block_area md_file
  end
  system "jekyll build"
  system "cd ../echohn.github.io && git add ./ && git commit -m 'auto commit' && git push origin master"
end

desc "Start a locally server"
task :s do
  system "jekyll server -s . -d _site -P 3000 -w"
end

# Usage: rake post title="A Title" [date="2014-04-14"]
desc "Create a new post"
task :new do
  unless FileTest.directory?('./_posts')
    abort("rake aborted: '_posts' directory not found.")
  end

  title = ENV["title"] || "new-post"
  slug = title.downcase.strip.gsub(' ', '-').gsub(/[^\w-]/, '')
  begin
    date = (ENV['date'] ? Time.parse(ENV['date']) : Time.now)
           .strftime('%Y-%m-%d')
  rescue Exception => e
    puts "Error: date format must be YYYY-MM-DD!"
    exit -1
  end

  filename = File.join('.', '_posts', "#{date}-#{slug}.md")
  if File.exist?(filename)
    abort("rake aborted: #{filename} already exists.")
  end

  yaml_header = <<-EOF.gsub(/^\s+\|/,'')
    |---
    |layout: post
    |title: \"#{title.gsub(/-/,' ')}\"
    |subtitle: \'\'
    |date: #{date}
    |header-img: \"img/post-bg-unix-linux.jpg\"
    |author: \"Echo\"
    |tags:
    |keywords:
    |---
    EOF

  puts "Creating new post: #{filename}"
  open(filename, 'w') do |post|
    post.puts yaml_header
  end

  exec "open #{filename}"
end

# Usage: rake post title="A Title" [date="2014-04-14"]
desc "Create a new slide"
task :slide do
  unless FileTest.directory?('./_slides')
    abort("rake aborted: '_slides' directory not found.")
  end

  title = ENV["title"] || "new-slide"
  slug = title.downcase.strip.gsub(' ', '-').gsub(/[^\w-]/, '')
  begin
    date = (ENV['date'] ? Time.parse(ENV['date']) : Time.now)
           .strftime('%Y-%m-%d')
  rescue Exception => e
    puts "Error: date format must be YYYY-MM-DD!"
    exit -1
  end

  filename = File.join('.', '_slides', "#{date}-#{slug}.haml")
  if File.exist?(filename)
    abort("rake aborted: #{filename} already exists.")
  end

  slide_home_page = <<-EOF.gsub(/^\s+\|/,'')
    |%section
    |  %h1 #{title}
    |  %h3 #{date.gsub(/\-/,'.')}
    |  %p
    |    %small
    |      Created by
    |      %a{:href => "http://echohn.github.io"} Echo Hon
    |      \/
    |      %a{:href => "http://twitter.com/echo_hon"} @echohn
    EOF
  yaml_header = <<-EOF.gsub(/^\s+\|/,'')
    |---
    |layout: slide
    |title: \"#{title.gsub(/-/,' ')}\"
    |date: #{date}
    |author: \"Echo\"
    |tags:
    |keywords:
    |---
    EOF

  puts "Creating new slide: #{filename}"
  open(filename, 'w') do |post|
    post.puts yaml_header
    post.puts slide_home_page
  end

  exec "open #{filename}"
end