class HTree::XMLDecl

# File htree/leaf.rb, line 6
def initialize(version, encoding=nil, standalone=nil)
  init_raw_string
  if /\A[a-zA-Z0-9_.:-]+\z/ !~ version
    raise HTree::Error, "invalid version in XML declaration: #{version.inspect}"
  end
  if encoding && /\A[A-Za-z][A-Za-z0-9._-]*\z/ !~ encoding
    raise HTree::Error, "invalid encoding in XML declaration: #{encoding.inspect}"
  end
  unless standalone == nil || standalone == true || standalone == false
    raise HTree::Error, "invalid standalone document declaration in XML declaration: #{standalone.inspect}"
  end
  @version = version
  @encoding = encoding
  @standalone = standalone
end

# File htree/parse.rb, line 351
def XMLDecl.parse(raw_string)
  unless /\A#{Pat::XmlDecl_C}\z/o =~ raw_string
    raise HTree::Error, "cannot recognize as XML declaration: #{raw_string.inspect}"
  end

  version = $1 || $2
  encoding = $3 || $4
  case $5 || $6
  when 'yes'
    standalone = true
  when 'no'
    standalone = false
  else
    standalone = nil
  end

  result = XMLDecl.new(version, encoding, standalone)
  result.raw_string = raw_string
  result
end