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module WikiCloth
class ReferencesExtension < Extension
# <ref>reference content</ref>
# <ref name="named">reference content</ref>
# <ref name="named" />
# <ref group="group_name">reference content</ref>
#
element 'ref' do |buffer|
# find our named reference reference if it exists
named_ref = buffer.get_attribute_by_name("name")
ref = @options[:link_handler].find_reference_by_name(named_ref) unless named_ref.nil?
# reference either not "named" or first time in document
if ref.nil?
@options[:link_handler].references << { :name => named_ref, :value => buffer.element_content, :count => 0, :group => buffer.get_attribute_by_name("group") }
ref = @options[:link_handler].references.last
end
ref_id = (named_ref.nil? ? "" : "#{named_ref}_") + "#{@options[:link_handler].reference_index(ref)}-#{ref[:count]}"
cite_anchor = "#cite_note-" + (named_ref.nil? ? "" : "#{named_ref}_") + @options[:link_handler].reference_index(ref).to_s
group_label = buffer.get_attribute_by_name("group") ? "#{buffer.get_attribute_by_name("group")} " : ""
ref_link = "<a href=\"#{cite_anchor}\">#{@options[:link_handler].reference_index(ref)}</a>"
ref[:count] += 1
"<sup class=\"reference\" id=\"cite_ref-#{ref_id}\">[#{group_label}#{ref_link}]</sup>"
end
# <references />
# <references group="group_name" />
#
element 'references' do |buffer|
ref_count = 0
group_match = buffer.get_attribute_by_name("group")
refs = @options[:link_handler].references.collect { |r|
next if r[:group] != group_match
ref_count += 1
ref_name = (r[:name].nil? ? "" : r[:name].to_slug + "_")
ret = "<li id=\"cite_note-#{ref_name}#{ref_count}\"><b>"
1.upto(r[:count]) { |x| ret += "<a href=\"#cite_ref-#{ref_name}#{ref_count}-#{x-1}\">" +
(r[:count] == 1 ? "^" : (x-1).to_s(26).tr('0-9a-p', 'a-z')) + "</a> " }
ret += "</b> #{r[:value]}</li>"
}.join("\n")
"<ol>#{refs}</ol>"
end
end
end
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