Method: InformWriter#new_tag

Defined in:
lib/IFMapper/InformWriter.rb

#new_tag(elem, str) ⇒ Object 



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# File 'lib/IFMapper/InformWriter.rb', line 36

def new_tag(elem, str)
  tag = str.dup
  if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('1.9.0')
    utf = Iconv.new( 'iso-8859-1', 'utf-8' )
    tag = utf.iconv( tag )
  else
    tag = tag.encode( 'utf-8', :invalid => :replace, 
                      :undef => :replace, :replace => '' )
  end

  # Invalid tag characters, replaced with _
  tag.gsub!(/[\s"'\/\\\-&#\,.:;!\?\n\(\)]/,'_')
 
  tag.gsub!(/__/, '')                  # remove reduntant __ repetitions
  tag.sub!(/^([\d]+)_?(.*)/, '\2\1')   # No numbers allowed at start of tag
  tag.downcase!                        # All tags are lowercase

  

  tag = tag[0..31]                     # Max. 32 chars. in tag (inform limit)

  # tag cannot be keyword (Doorway, Room, Class, etc)
  if tag =~ @keyword
    tag << '1'
  end

  if @tags.values.include?(tag)
    idx  = 2
    root = tag[0..29]  # to leave room for number
    while @tags.values.include?(tag)
	tag = "#{root}#{idx}"
	idx += 1
    end
  end
  if elem.kind_of?(String)
    @tags[tag] = tag
  else
    @tags[elem] = tag
  end
  return tag
end