Method: REXML::Parsers::XPathParser#abbreviate

Defined in:
lib/rexml/parsers/xpathparser.rb

#abbreviate(path) ⇒ Object



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# File 'lib/rexml/parsers/xpathparser.rb', line 34

def abbreviate( path )
  path = path.kind_of?(String) ? parse( path ) : path
  string = ""
  document = false
  while path.size > 0
    op = path.shift
    case op
    when :node
    when :attribute
      string << "/" if string.size > 0
      string << "@"
    when :child
      string << "/" if string.size > 0
    when :descendant_or_self
      string << "/"
    when :self
      string << "."
    when :parent
      string << ".."
    when :any
      string << "*"
    when :text
      string << "text()"
    when :following, :following_sibling,
          :ancestor, :ancestor_or_self, :descendant,
          :namespace, :preceding, :preceding_sibling
      string << "/" unless string.size == 0
      string << op.to_s.tr("_", "-")
      string << "::"
    when :qname
      prefix = path.shift
      name = path.shift
      string << prefix+":" if prefix.size > 0
      string << name
    when :predicate
      string << '['
      string << predicate_to_string( path.shift ) {|x| abbreviate( x ) }
      string << ']'
    when :document
      document = true
    when :function
      string << path.shift
      string << "( "
      string << predicate_to_string( path.shift[0] ) {|x| abbreviate( x )}
      string << " )"
    when :literal
      string << %Q{ "#{path.shift}" }
    else
      string << "/" unless string.size == 0
      string << "UNKNOWN("
      string << op.inspect
      string << ")"
    end
  end
  string = "/"+string if document
  return string
end