instiki/lib/chunks/include.rb

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require 'chunks/wiki'
# Includes the contents of another page for rendering.
# The include command looks like this: "[[!include PageName]]".
# It is a WikiReference since it refers to another page (PageName)
# and the wiki content using this command must be notified
# of changes to that page.
# If the included page could not be found, a warning is displayed.
class Include < WikiChunk::WikiReference
INCLUDE_PATTERN = /\[\[!include\s+(.*?)\]\]\s*/i
def self.pattern() INCLUDE_PATTERN end
def initialize(match_data, content)
super
@page_name = match_data[1].strip
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rendering_mode = content.options[:mode] || :show
@unmask_text = get_unmask_text_avoiding_recursion_loops(rendering_mode)
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end
private
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def get_unmask_text_avoiding_recursion_loops(rendering_mode)
if refpage
# TODO This way of instantiating a renderer is ugly.
renderer = PageRenderer.new(refpage.current_revision)
if renderer.wiki_includes.include?(@content.page_name)
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# this will break the recursion
@content.delete_chunk(self)
return "<em>Recursive include detected; #{@page_name} --> #{@content.page_name} " +
"--> #{@page_name}</em>\n"
else
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included_content =
case rendering_mode
when :show then renderer.display_content
when :publish then renderer.display_published
when :export then renderer.display_content_for_export
else raise "Unsupported rendering mode #{@mode.inspect}"
end
@content.merge_chunks(included_content)
return included_content.pre_rendered
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end
else
return "<em>Could not include #{@page_name}</em>\n"
end
end
end