Sha256: 17f3f7609d757526c67b2dddd173214a89521b9a42fb5f47aa8d8023b44b70ff
Contents?: true
Size: 1.55 KB
Versions: 10
Compression:
Stored size: 1.55 KB
Contents
# frozen_string_literal: true
require "uri"
class HTMLPipeline
class NodeFilter
# HTML Filter for replacing relative and root relative image URLs with
# fully qualified URLs
#
# This is useful if an image is root relative but should really be going
# through a cdn, or if the content for the page assumes the host is known
# i.e. scraped webpages and some RSS feeds.
#
# Context options:
# :image_base_url - Base URL for image host for root relative src.
# :image_subpage_url - For relative src.
#
# This filter does not write additional information to the context.
# Note: This filter would need to be run before AssetProxyFilter.
class AbsoluteSourceFilter < NodeFilter
SELECTOR = Selma::Selector.new(match_element: "img")
def selector
SELECTOR
end
def handle_element(element)
src = element["src"]
return if src.nil? || src.empty?
src = src.strip
return if src.start_with?("http")
base = if src.start_with?("/")
image_base_url
else
image_subpage_url
end
element["src"] = URI.join(base, src).to_s
end
# Private: the base url you want to use
def image_base_url
context[:image_base_url] || raise("Missing context :image_base_url for #{self.class.name}")
end
# Private: the relative url you want to use
def image_subpage_url
context[:image_subpage_url] || raise("Missing context :image_subpage_url for #{self.class.name}")
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems