class Touch_Up

# File lib/touch_up.rb, line 16
def initialize str
  @origin = str
end

# File lib/touch_up.rb, line 20
def to_html
  splits = Escape_Escape_Escape.html(@origin).gsub(HREFS) { |full, match|

    raw_text   = $2 ? Escape_Escape_Escape.decode_html($2) : nil
    raw_append = Escape_Escape_Escape.decode_html $3
    raw_link   = extract_urls(raw_append).first

    if !raw_link
      full
    else

      append   = Escape_Escape_Escape.html raw_append.sub(raw_link, NOTHING)
      text     = if raw_text
                   Escape_Escape_Escape.html(raw_text)
                 else
                   Escape_Escape_Escape.html(raw_link)
                 end

      raw_link = Escape_Escape_Escape.decode_html(raw_link)

      if !raw_link['://']
        raw_link = 'http://' + raw_link
      end

      begin
        link = Escape_Escape_Escape.href(raw_link)

        "<a href=\"#{link}\">#{text}</a>#{append}"

      rescue Escape_Escape_Escape::Invalid_HREF
        full
      end # begin

    end # if


  }.split(/(\<[^\>]+\>[^\<]+\<\/[^\>]+\>)/)

  # "i", "del", "strong" tags
  final = ""
  i = 0
  while i < splits.size
    final << (splits[i].gsub(MARK_DOWNS) { |full, match|
      case
      when $1 == $3 && $1 == '&#47;'
        "<i>#{$2}</i>"
      when $1 == '~~' && $3 == '~~'
        "<del>#{$2}</del>"
      when $1 == $3 && $1 == '*'
        "<strong>#{$2}</strong>"
      else
        full
      end
    })

    i += 1
    if splits[i]
      final << splits[i]
      i += 1
    end
  end

  final

end