Sha256: 3cb4577c5b1bff87b4bd10ba23eb0fb951322c4a7872b13a77085c9796df9667
Contents?: true
Size: 1.52 KB
Versions: 37
Compression:
Stored size: 1.52 KB
Contents
require 'uri'
module HTML
class Pipeline
class AbsoluteSourceFilter < Filter
# 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.
# This filter would need to be run before CamoFilter.
def call
doc.search("img").each do |element|
next if element['src'].nil? || element['src'].empty?
src = element['src'].strip
unless src.start_with? 'http'
if src.start_with? '/'
base = image_base_url
else
base = image_subpage_url
end
element["src"] = URI.join(base, src).to_s
end
end
doc
end
# Private: the base url you want to use
def image_base_url
context[:image_base_url] or 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] or raise "Missing context :image_subpage_url for #{self.class.name}"
end
end
end
end
Version data entries
37 entries across 37 versions & 2 rubygems