scrapbox2md

#!/usr/env ruby
require 'pp'
require 'json'
require 'fileutils'

FILENAME = 'xxx.json'
DIRNAME = 'converted'

def convert(scrapbox_format)
  md = scrapbox_format

  # remove backspace
  md.gsub!(/\b/) { '' }

  # custom links
  md.gsub!('[todo.icon]') { 'ToDo' }
  md.gsub!('[mtg.icon]') { 'MTG' }
  md.gsub!('[_.icon]') { '- [ ]' }
  md.gsub!('[x.icon]') { '- [x]' }
  md.gsub!('[hr.icon]') { "---" }

  # heading
  #  md.gsub!(/[**** (.*)]/, "# #{$1}")
  md.gsub!(/\A\[\*\*\* (.*)\]/) { "## #{$1}" }
  md.gsub!(/\A\[\*\* (.*)\]/) { "### #{$1}" }
  md.gsub!(/\A\[\* (.*)\]/) { "#### #{$1}" }

  # list
  md.gsub!(/\A[\s|　]{1}(\S.*)\z/) { "* #{$1}" }
  md.gsub!(/\A[\s|　]{2}(\S.*)\z/) { "  * #{$1}" }
  md.gsub!(/\A[\s|　]{3}(\S.*)\z/) { "    * #{$1}" }
  md.gsub!(/\A[\s|　]{4}(\S.*)\z/) { "      * #{$1}" }
  md.gsub!(/\A[\s|　]{5}(\S.*)\z/) { "        * #{$1}" }

  # code
  md.gsub!(/\A>\s(.*)$\z/) { "`#{$1}`" }
  md.gsub!(/\A\$\s*(.*)$\z/) { "`$ #{$1}`" }

  # remove escape chars
  md.delete!("\b")
  md.delete!("\e")

  md
end

label = "日報"

file = File.open(FILENAME)
pages = JSON.load(file)['pages']
dir = "#{DIRNAME}/#{label}"
FileUtils.mkdir_p(dir)
pages.each do |page|
  Dir.chdir(dir) do
    if page['title'] =~ Regexp.new("\\A#{label}")
      filename = "#{page['title'].gsub('/', '_').delete("\b").delete("\e")}.md"
      md = '';
      md << %Q|* Created: #{Time.at(page['created']).to_s}\n|
      md << %Q|* Updated: #{Time.at(page['updated']).to_s}\n\n|
      md << page['lines'][1..].map {|line| convert line }.join("\n\n")
      File.open(filename, 'w') {|f| f.puts md }
    end
  end
end