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require 'asciidoctor'
require 'html/pipeline'
module Gitlab
# Parser/renderer for the AsciiDoc format that uses Asciidoctor and filters
# the resulting HTML through HTML pipeline filters.
module Asciidoc
# Provide autoload paths for filters to prevent a circular dependency error
autoload :RelativeLinkFilter, 'gitlab/markdown/relative_link_filter'
DEFAULT_ADOC_ATTRS = [
'showtitle', 'idprefix=user-content-', 'idseparator=-', 'env=gitlab',
'env-gitlab', 'source-highlighter=html-pipeline'
].freeze
# Public: Converts the provided Asciidoc markup into HTML.
#
# input - the source text in Asciidoc format
# context - a Hash with the template context:
# :commit
# :project
# :project_wiki
# :requested_path
# :ref
# asciidoc_opts - a Hash of options to pass to the Asciidoctor converter
# html_opts - a Hash of options for HTML output:
# :xhtml - output XHTML instead of HTML
#
def self.render(input, context, asciidoc_opts = {}, html_opts = {})
asciidoc_opts = asciidoc_opts.reverse_merge(
safe: :secure,
backend: html_opts[:xhtml] ? :xhtml5 : :html5,
attributes: []
)
asciidoc_opts[:attributes].unshift(*DEFAULT_ADOC_ATTRS)
html = ::Asciidoctor.convert(input, asciidoc_opts)
if context[:project]
result = HTML::Pipeline.new(filters).call(html, context)
save_opts = html_opts[:xhtml] ?
Nokogiri::XML::Node::SaveOptions::AS_XHTML : 0
html = result[:output].to_html(save_with: save_opts)
end
html.html_safe
end
private
def self.filters
[
Gitlab::Markdown::RelativeLinkFilter
]
end
end
end
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