class RubyMark

# File lib/rubymark.rb, line 2
def initialize(markdown)
  @markdown = markdown
end

# File lib/rubymark.rb, line 73
def blockquotes(markdown)
  markdown.gsub!(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/) do
        bq = $1
        if bq
      bq.gsub!(/^[ \t]*>[ \t]?/, "") # trim one level of quoting
                  bq.gsub!(/^[ \t]+$/, "")       # trim whitespace-only lines
                  bq.strip!
                
                  "<blockquote><p>\n#{bq}\n</p></blockquote>\n\n"
                else
                  $&
          end
  end
  markdown
end

# File lib/rubymark.rb, line 20
def emphasis(markdown)
  markdown
    .gsub(/__(.*)__/, "<strong>\\1</strong>")
    .gsub(/_(.*)_/, "<em>\\1</em>")
    .gsub(/ <em> /, " _ ")
    .gsub(/ <\/em> /, " _ ")
    .gsub(/\\<em>/, "_")
    .gsub(/\\<\/em>/, "_")
    .gsub(/\*\*(.*)\*\*/, "<strong>\\1</strong>")
    .gsub(/\*(.*)\*/, "<em>\\1</em>")
    .gsub(/ <em> /, " * ")
    .gsub(/ <\/em> /, " * ")
    .gsub(/\\<em>/, "*")
    .gsub(/\\<\/em>/, "*")
end

# File lib/rubymark.rb, line 36
def headings(markdown)
   markdown
      .gsub(/^\#\#\#\#\#\# (.*) \#\#\#\#\#\#/, '<h6>\1</h6>')
      .gsub(/^\#\#\#\#\#\# (.*)/, '<h6>\1</h6>')
      .gsub(/^\#\#\#\#\# (.*) \#\#\#\#\#/, '<h5>\1</h5>')
      .gsub(/^\#\#\#\#\# (.*)/, '<h5>\1</h5>')
      .gsub(/^\#\#\#\# (.*) \#\#\#\#/, '<h4>\1</h4>')
      .gsub(/^\#\#\#\# (.*)/, '<h4>\1</h4>')
      .gsub(/^\#\#\# (.*) \#\#\#/, '<h3>\1</h3>')
      .gsub(/^\#\#\# (.*)/, '<h3>\1</h3>')
      .gsub(/^\#\# (.*) \#\#/, '<h2>\1</h2>')
      .gsub(/^\#\# (.*)/, '<h2>\1</h2>')
      .gsub(/^\# (.*) \#/, '<h1>\1</h1>')
      .gsub(/^\# (.*)/, '<h1>\1</h1>')
end

# File lib/rubymark.rb, line 67
def links(markdown)
  markdown
    .gsub(/\[(.*)\]\((.*) "(.*)"\)/, "<a href=\"\\2\" title=\"\\3\">\\1</a>")
    .gsub(/\[(.*)\]\((.*)\)/, "<a href=\"\\2\">\\1</a>")
end

# File lib/rubymark.rb, line 6
def ordered_lists(markdown)
  markdown
    .gsub(/\n\n(\d*\. .*)/, "\n<ol>\n\\1")
    .gsub(/^(\d*\. .*)\n\n/, "\\1\n</ol>\n")
    .gsub(/^\d*\. (.*)/, "<li>\\1</li>")
end

# File lib/rubymark.rb, line 52
def paragraphs(markdown)
  markdown
    .gsub(/^\n(.+)\n$/, "\n<p>\\1</p>\n")
    .gsub(/\A(.+)/, "<p>\\1")
    .gsub(/(.+)\Z/, "\\1</p>")
    .gsub(/\n\n/, "</p>\n\n<p>")
    .gsub(/\n\n<p><\/p>\n\n/, "\n\n")
    .gsub(/\A<\/p>/, "")
    .gsub(/<p>\Z/, "")
    .gsub(/<p>(<.*>)/, "\\1")
    .gsub(/(<.*>)<\/p>/, "\\1")
    .gsub(/<p>(<.*>)/, "\\1")
    .gsub(/(<.*>)<\/p>/, "\\1")
end

# File lib/rubymark.rb, line 89
def to_html
  links(paragraphs(headings(emphasis(unordered_lists(ordered_lists(blockquotes(@markdown)))))))
end

# File lib/rubymark.rb, line 13
def unordered_lists(markdown)
  markdown
    .gsub(/\n\n(\* .*)/, "<ul>\n\\1")
    .gsub(/^(\* .*)\n\n/, "\\1\n</ul>\n\n")
    .gsub(/^\* (.*)/, "<li>\\1</li>")
end