class HTML::Pipeline::ImageLinkFilter

Constants

IGNORE_PARENTS

Public Instance Methods

apply_filter(content) click to toggle source
# File lib/html/pipeline/image_link/filter.rb, line 21
def apply_filter(content)
  protocols = https_only? ? %w[https] : %w[https http]
  content.gsub(/#{Regexp.union(protocols)}:\/\/.+\.#{Regexp.union(image_extensions)}(\?\S+)?/i) do |match|
    %(<a href="#{match}"><img src="#{match}" alt=""></a>)
  end
end
call() click to toggle source
# File lib/html/pipeline/image_link/filter.rb, line 8
def call
  doc.xpath('.//text()').each do |node|
    next if has_ancestor?(node, IGNORE_PARENTS)

    content = node.to_html
    html = apply_filter(content)
    next if html == content

    node.replace(html)
  end
  doc
end

Private Instance Methods

https_only?() click to toggle source
# File lib/html/pipeline/image_link/filter.rb, line 30
def https_only?
  @context.key?(:https_only) ? @context[:https_only] : true
end
image_extensions() click to toggle source
# File lib/html/pipeline/image_link/filter.rb, line 34
def image_extensions
  @context[:image_extensions] || %w[jpg jpeg bmp gif png]
end