Class: Wovnrb::ImageReplacer

Inherits:
ReplacerBase show all
Defined in:
lib/wovnrb/html_replacers/image_replacer.rb

Instance Method Summary collapse

Constructor Details

#initialize(url, text_index, src_index, img_src_prefix) ⇒ ImageReplacer 



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# File 'lib/wovnrb/html_replacers/image_replacer.rb', line 3

def initialize(url, text_index, src_index, img_src_prefix)
  @url = url
  @text_index = text_index
  @src_index = src_index
  @img_src_prefix = img_src_prefix
end

Instance Method Details

#replace(dom, lang) ⇒ Object 



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# File 'lib/wovnrb/html_replacers/image_replacer.rb', line 10

def replace(dom, lang)
  dom.xpath('//img').each do |node|
    next if wovn_ignore?(node)

    # use regular expressions to support case insensitivity (right?)
    if node.to_html =~ /src=['"][^'"]*['"]/i
      src = node.to_html.match(/src=['"]([^'"]*)['"]/i)[1]
      # THIS SRC CORRECTION DOES NOT HANDLE ONE IMPORTANT CASE
      # 1) "../path/with/ellipse"
      # if this is not an absolute src
      if src !~ /:\/\//
        # if this is a path with a leading slash
        if src =~ /^\//
          src = "#{@url[:protocol]}://#{@url[:host]}#{src}"
        else
          src = "#{@url[:protocol]}://#{@url[:host]}#{@url[:path]}#{src}"
        end
      end

      # shouldn't need size check, but for now...
      if @src_index[src] && @src_index[src][lang.lang_code] && @src_index[src][lang.lang_code].size > 0
        node.attribute('src').value = "#{@img_src_prefix}#{@src_index[src][lang.lang_code][0]['data']}"
      end
    end

    if node.get_attribute('alt')
      alt = node.get_attribute('alt').strip
      if @text_index[alt] && @text_index[alt][lang.lang_code] && @text_index[alt][lang.lang_code].size > 0
        node.attribute('alt').value = replace_text(alt, @text_index[alt][lang.lang_code][0]['data'])
      end
    end
  end
end