rdoc_to_mmd.rb

#!/usr/bin/env ruby
# frozen_string_literal: true

input = IO.read('doing.rdoc')

input.gsub!(/^======= Options/, "###### Options\n\n")
input.gsub!(/^===== Options/, "##### Options\n\n")
input.gsub!(/^===== Commands/, "### Commands\n")
input.gsub!(/^=== Commands/, "## Commands\n")

input.gsub!(/^(?<pre>={4,6}) Command: <tt>(?<cmd>.*?) (?<arg> .*?)?<\/tt>\n(?<after>.*?)$/) do
  m = Regexp.last_match
  level = m['pre'].length == 6 ? '####' : '###'
  r = "#{level} #{m['cmd'].sub(/\|(.*?)$/, ' (*or* \1)')}"
  r += " #{m['arg']}" if m['arg']
  r += " {##{m['cmd'].gsub(/\|.*?$/, '')}}" if m['pre'].length == 4
  r += "\n\n"
  "#{r}**#{m['after']}**{:.description}\n"
end

input.gsub!(/(?<=\n)={5,7} (.*?)\n+((.|\n)+?)(?=\n=|$)/s) do
  m = Regexp.last_match
  "`#{m[1]}`\n: #{m[2].gsub(/\|/, '\\|')}"
end

input.gsub!(/^=== Global Options/, "## Global Options\n")
input.gsub!(/^=== (.*?)\n+(.*?)$/) do
  m = Regexp.last_match
  "`#{m[1]}`\n: #{m[2].gsub(/\|/, '\\|')}"
end
input.gsub!(/^== (.*?) - (.*?)$\n\n(.*?)$/, "**\\1: \\2**\n\n*\\3*\n\n## Table of Contents\n{:.no_toc}\n\n* Table of Contents\n{:toc}")
input.gsub!(/^\[(Default Value|Must Match)\] (.*?)$/, ': *\1:* `\2`')
input.gsub!(/\n  (?=\S)/, ' ')
input.gsub!(/^([^:`\n#*](.*?))$/, "\\1\n")
input.gsub!(/\n{3,}/, "\n\n")
input.gsub!(/^(: .*?)\n\n(:.*?)$/, "\\1\n\\2")
input.gsub!(/^\[Default Command\] (.*?)$/, '> **Default Command:** [`\1`](#\1)')
input.gsub!(/\/Users\/ttscoff\/scripts\/editor.sh/, '$EDITOR')
input.gsub!(/\/Users\/ttscoff/, '~')
puts %(---
layout: page
title: "Doing - All Commands"
comments: false
footer: true
body_id: doingcommands
---
)
puts input