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# frozen_string_literal: true
require 'uri'
module Banzai
module Filter
# HTML filter that "fixes" links to uploads.
#
# Context options:
# :group
# :only_path
# :project
# :system_note
class UploadLinkFilter < BaseRelativeLinkFilter
def call
return doc if context[:system_note]
if Feature.enabled?(:optimize_linkable_attributes, project, default_enabled: :yaml)
# We exclude processed upload links from the linkable attributes to
# prevent further modifications by RepositoryLinkFilter
linkable_attributes.reject! do |attr|
process_link_to_upload_attr(attr)
end
else
linkable_attributes.each do |attr|
process_link_to_upload_attr(attr)
end
end
doc
end
protected
def process_link_to_upload_attr(html_attr)
return unless html_attr.value.start_with?('/uploads/')
path_parts = [unescape_and_scrub_uri(html_attr.value)]
if project
path_parts.unshift(relative_url_root, project.full_path)
elsif group
path_parts.unshift(relative_url_root, 'groups', group.full_path, '-')
else
path_parts.unshift(relative_url_root)
end
begin
path = Addressable::URI.escape(File.join(*path_parts))
rescue Addressable::URI::InvalidURIError
return
end
html_attr.value =
if context[:only_path]
path
else
Addressable::URI.join(Gitlab.config.gitlab.base_url, path).to_s
end
if html_attr.name == 'href'
html_attr.parent.set_attribute('data-link', 'true')
end
html_attr.parent.add_class('gfm')
end
def group
context[:group]
end
end
end
end
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