Module: JekyllImport::Util

Defined in:
lib/jekyll-import/util.rb

Class Method Summary collapse

Class Method Details

.wpautop(pee, br = true) ⇒ Object

Ruby translation of wordpress wpautop (see core.trac.wordpress.org/browser/trunk/src/wp-includes/formatting.php)

A group of regex replaces used to identify text formatted with newlines and replace double line-breaks with HTML paragraph tags. The remaining line-breaks after conversion become <<br />> tags, unless $br is set to false

Parameters:

  • string —

    pee The text which has to be formatted.

  • bool —

    br Optional. If set, this will convert all remaining line-breaks after paragraphing. Default true.

Returns:

  • string Text which has been converted into correct paragraph tags.



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# File 'lib/jekyll-import/util.rb', line 15

def self.wpautop(pee, br = true)
  return "" if pee.strip == ""

  allblocks = "(?:table|thead|tfoot|caption|col|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|option|form|map|area|blockquote|address|math|style|p|h[1-6]|hr|fieldset|noscript|legend|section|article|aside|hgroup|header|footer|nav|figure|figcaption|details|menu|summary)"
  pre_tags = {}
  pee += "\n"

  if pee.include?("<pre")
    pee_parts = pee.split("</pre>")
    last_pee = pee_parts.pop
    pee = ""
    pee_parts.each_with_index do |pee_part, i|
      start = pee_part.index("<pre")

      unless start
        pee += pee_part
        next
      end

      name = "<pre wp-pre-tag-#{i}></pre>"
      pre_tags[name] = (pee_part[start..-1] + "</pre>").gsub('\\', '\\\\\\\\')

      pee += pee_part[0, start] + name
    end
    pee += last_pee
  end

  pee = pee.gsub(Regexp.new('<br />\s*<br />'), "\n\n")
  pee = pee.gsub(Regexp.new("(<" + allblocks + "[^>]*>)"), "\n\\1")
  pee = pee.gsub(Regexp.new("(</" + allblocks + ">)"), "\\1\n\n")
  pee = pee.gsub("\r\n", "\n").tr("\r", "\n")
  if pee.include? "<object"
    pee = pee.gsub(Regexp.new('\s*<param([^>]*)>\s*'), "<param\\1>")
    pee = pee.gsub(Regexp.new('\s*</embed>\s*'), "</embed>")
  end

  pees = pee.split(%r!\n\s*\n!).compact
  pee = ""
  pees.each { |tinkle| pee += "<p>" + tinkle.chomp("\n") + "</p>\n" }
  pee = pee.gsub(Regexp.new('<p>\s*</p>'), "")
  pee = pee.gsub(Regexp.new("<p>([^<]+)</(div|address|form)>"), "<p>\\1</p></\\2>")
  pee = pee.gsub(Regexp.new('<p>\s*(</?' + allblocks + '[^>]*>)\s*</p>'), "\\1")
  pee = pee.gsub(Regexp.new("<p>(<li.+?)</p>"), "\\1")
  pee = pee.gsub(Regexp.new("<p><blockquote([^>]*)>", "i"), "<blockquote\\1><p>")
  pee = pee.gsub("</blockquote></p>", "</p></blockquote>")
  pee = pee.gsub(Regexp.new('<p>\s*(</?' + allblocks + "[^>]*>)"), "\\1")
  pee = pee.gsub(Regexp.new("(</?" + allblocks + '[^>]*>)\s*</p>'), "\\1")
  if br
    pee = pee.gsub(Regexp.new('<(script|style).*?</\1>')) { |match| match.gsub("\n", "<WPPreserveNewline />") }
    pee = pee.gsub(Regexp.new('(?<!<br />)\s*\n'), "<br />\n")
    pee = pee.gsub("<WPPreserveNewline />", "\n")
  end
  pee = pee.gsub(Regexp.new("(</?" + allblocks + '[^>]*>)\s*<br />'), "\\1")
  pee = pee.gsub(Regexp.new('<br />(\s*</?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)'), "\\1")
  pee = pee.gsub(Regexp.new('\n</p>$'), "</p>")

  pre_tags.each do |name, value|
    pee.gsub!(name, value)
  end
  pee
end