hatena blog 2 markdown

mt2md.rb

#!/usr/bin/env ruby

# Forked from: http://hamasyou.com/blog/2014/02/13/movable-type-to-octopress/

require 'date'
require 'mustache'
require 'stringex'
require 'cgi'
require 'reverse_markdown'

export     = File.open(ARGV[0])
target_dir = ARGV[1]

class Post < Mustache
  self.template = <<-MARKDOWN
---
title: "{{title}}"
subtitle: ""
summary: ""
authors: ["author name"]
tags: []
categories: {{formatted_category}}
date: {{formatted_date}}
lastmod: {{formatted_date}}
featured: false
draft: false

image:
  caption: ""
  focal_point: ""
  preview_only: false

projects: []
---
{{formatted_body}}
MARKDOWN

  attr_accessor :author, :title, :category, :comments, :status, :body

  def initialize
    @body = []
  end

  def date=(date)
    case date
    when String
      @date = DateTime.strptime(date, "%m/%d/%Y %H:%M:%S")
    else
      @date = date
    end
  end

  def date
    @date
  end

  def formatted_categories
    if @categories.empty?
      "[]"
    else
      @categories.to_s
    end
  end

  def formatted_date
    @date.rfc3339
  end

  def comments=(comments)
    @comments = comments == "1" ? true : false
  end

  def formatted_body
    ReverseMarkdown.convert(CGI.unescapeHTML(body.join).
      #gsub(/<a href="(.+?)"(?: target=".+")?>*(.*?)<\/a>/i, '[\2](\1)').
      gsub(/<a class="keyword" href="(?:.+?)">(.*?)<\/a>/i, '\1').
      gsub("<!--more-->", "\n\n<!-- more -->\n\n"))
  end

  def file_name
    "#{date.strftime("%Y-%m-%d") unless date.nil?}-#{title.to_url unless title.nil?}"
  end
end

posts = [Post.new]

KEYWORDS = /(AUTHOR|TITLE|STATUS|COMMENTS|CATEGORY|DATE): (.*)/

def attr_and_value(line)
  line =~ KEYWORDS
  ["#{$1.downcase}=", $2]
end

puts " # Reading from data '#{ARGV[0]}' ..."

puts " # Generating Markdown ..."

comment_section = false

export.each do |line|
  if line.strip == "--------"
    posts << Post.new
    print '.'
    comment_section = false
    next
  end

  next if comment_section

  case line.strip
  when KEYWORDS
    posts.last.send(*attr_and_value(line))
  when /BODY/
    next
  when /BASENAME/
    next
  when /CONVERT BREAKS/
    next
  when /IMAGE/
    next
  when "-----"
    next
  when /COMMENT:/
    comment_section = true
    next
  else
    posts.last.body << line
  end
end

puts
puts " # Writing files to #{target_dir} ..."
`mkdir -p #{target_dir}`
`cd #{target_dir} && rm -rf _posts && mkdir _posts`

ok, fails = 0, 0

posts.each do |post|
  begin
    dir_name = File.join(target_dir, "_posts", post.file_name)
    Dir.mkdir(dir_name)
    File.open(File.join(dir_name, "index.md"), "w+") { |f| f.puts post.render }
    puts " -> #{post.file_name}"
    ok += 1
  rescue
    puts " # Could not write file for '#{post.title}' and #{post.file_name}"
    fails += 1
  end
end

puts
puts " # All done! (#{ok}/#{fails})"