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require 'asciidoctor/extensions' unless RUBY_ENGINE == 'opal'
include ::Asciidoctor
class InterDocumentReferencesMacro < Asciidoctor::Extensions::InlineMacroProcessor
use_dsl
# Macro to handle cross references to different files in the same book.
named :crossref
def process parent, target, attrs
anchor = attrs[1]
text = attrs[2]
if text.nil? || text.empty?
warn "Crossref '#{anchor}' needs a description."
end
doc = parent.document
if doc.backend == 'html5'
if doc.attributes['book'] == "true"
if doc.attributes['isonline'] == "1"
(create_anchor parent, text, type: :link, target: %(./##{anchor})).render
else
(create_anchor parent, text, type: :link, target: %(./index.html##{anchor})).render
end
else
if doc.attributes['isonline'] == "1"
(create_anchor parent, text, type: :link, target: %(../#{target}/##{anchor})).render
else
(create_anchor parent, text, type: :link, target: %(../#{target}/index.html##{anchor})).render
end
end
else
xref_attrs = { 'refid' => anchor }
xref_node = create_anchor parent, text, type: :xref, target: target, attributes: xref_attrs
# Return the node
xref_node
end
end # process
end # class
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