Class: HtmlEmailCreator::Processor

Inherits:
Object
  • Object
show all
Defined in:
lib/html_email_creator/processor.rb

Instance Method Summary collapse

Constructor Details

#initialize(email_string, settings = HtmlEmailCreator::settings) ⇒ Processor

Returns a new instance of Processor.



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# File 'lib/html_email_creator/processor.rb', line 8

def initialize(email_string, settings = HtmlEmailCreator::settings)
  @email = email_string
  @settings = settings
end

Instance Method Details

#original_email ⇒ Object 



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# File 'lib/html_email_creator/processor.rb', line 13

def original_email
  @email
end

#to_html ⇒ Object 



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# File 'lib/html_email_creator/processor.rb', line 17

def to_html
  return @processed_html_email if @processed_html_email
  
  doc = Nokogiri::HTML(@email)
  headers = ["h1", "h2", "h3", "h4", "h5"]

  # wrap headers with div

  headers.each do |hx|
    nodes = doc.css hx
    nodes.wrap("<div class='#{hx}'></div>")
  end

  # replace headers with divs

  headers.each do |hx|
    doc.css(hx).each { |h| h.name = "div" }
  end

  # replace paragraphs with divs

  #doc.css("p").each { |p| p.name = "div" }

  # store file

  html_email = doc.to_html
  
  # process and then call callback
  inlined_html_email = InlineStyle.process(html_email)  
  HtmlEmailCreator::callbacks(@settings).html_created(inlined_html_email)
end

#to_plain_text ⇒ Object 



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# File 'lib/html_email_creator/processor.rb', line 49

def to_plain_text
  return @processed_plain_text_email if @processed_plain_text_email
  
  doc = Nokogiri::HTML(to_html)
  doc.css('style').each { |node| node.remove }
  doc.css('title').each { |node| node.remove }
  doc.css('script').each { |node| node.remove }
  doc.css('link').each { |node| node.remove }
  doc.css('a').each do |node|
    img = node.at_css('img')
    node.content = if img
      "#{img['alt']} (#{node['href']})"
    else
      "#{node.content} (#{node['href']})"
    end
  end
  doc.css('img').each do |node|
    node.content = "#{node['alt']} (#{node['src']})"
  end
  doc.css('strong').each do |node| 
    node.content = "*#{node.content}*"
  end
  doc.css('li').each { |node| node.content = "- #{node.content.strip}" }

  # format all content that must have an empty line on top of them

  doc.css('div.h1 div').each do |node| 
    node.content = "\n#{'=' * 77}\n#{node.content}"
  end
  doc.css('div.h2 div').each do |node| 
    node.content = "\n#{'-' * 77}\n#{node.content}"
  end
  doc.css('div.h3 div').each do |node| 
    node.content = "\n#{'- ' * 39}\n#{node.content}"
  end
  doc.css('div.h4 div').each do |node| 
    node.content = "\n#{node.content}"
  end
  doc.css('p').each do |node| 
    node.content = "\n#{node.content}"
  end 

  doc.css('table.inline').each do |table|
    content = []
    table.css('tr').each do |row|
      # each_index method is missing
      i = 0
      row.css('td').each do |column|
        empty_column = column.content.strip.gsub(/^\p{Space}+|\p{Space}+$/, "").empty?
        if content[i]
          content[i] = content[i] + "\n* #{column.content}" unless empty_column
        else
          content[i] = "\n#{column.content}" unless empty_column
        end
        i = i + 1
      end
    end

    table.content = "#{content.join("\n")}\n"
  end

  # remove unnecessary whitespaces and empty lines
  previous = ""
  @processed_plain_text_email = doc.css('body').text.split("\n").map do |line|
    # Nokogiri uses UTF-8 whitespace character for &nbsp and strip doesn't support those
    res = line.gsub(/^\p{Space}+|\p{Space}+$/, "")
    new_previous = res
    res = nil if res.empty? && previous.empty?
    previous = new_previous
    res
  end.compact.join("\n")
end