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# File 'lib/gems/haml-2.0.4/lib/haml/html.rb', line 94
def to_haml(tabs = 0)
attrs = public_id.scan(/DTD\s+([^\s]+)\s*([^\s]*)\s*([^\s]*)\s*\/\//)[0]
if attrs == nil
raise Exception.new("Invalid doctype")
end
type, version, strictness = attrs.map { |a| a.downcase }
if type == "html"
version = "1.0"
strictness = "transitional"
end
if version == "1.0" || version.empty?
version = nil
end
if strictness == 'transitional' || strictness.empty?
strictness = nil
end
version = " #{version}" if version
if strictness
strictness[0] = strictness[0] - 32
strictness = " #{strictness}"
end
"#{tabulate(tabs)}!!!#{version}#{strictness}\n"
end
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