/**********************************************
    * Copyright (C) 2011 Lukas Laag
    * This file is part of svgreal.
    * 
    * svgreal is free software: you can redistribute it and/or modify
    * it under the terms of the GNU General Public License as published by
    * the Free Software Foundation, either version 3 of the License, or
    * (at your option) any later version.
    * 
   * svgreal is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   * 
   * You should have received a copy of the GNU General Public License
   * along with svgreal.  If not, see http://www.gnu.org/licenses/
   **********************************************/
  package org.vectomatic.svg.edit.client.engine;
  
  
  /**
   * Opera version of IdRefTokenizer (required because Opera
   * transforms urls into absolute urls).
   * @author laaglu
   */
  public class IdRefTokenizerOpera extends IdRefTokenizer {
  	protected static final String START2 = "url(";
  	protected static final String END2 = ")";
  
  	public IdRefToken nextToken() {
  		if (index1 != str.length()) {
  			if (token.kind == IdRefToken.IDREF) {
  				boolean notFirst = token.value != null;
  				token.kind = IdRefToken.DATA;
  				index2 = str.indexOf(START2, index1);
  				if (index2 != -1) {
  					token.value = str.substring(index1, index2 + START2.length()) + "'#";
  					index1 = index2 + START2.length();
  				} else {
  					token.value = str.substring(index1);
  					index1 = str.length();
  				}
  				if (notFirst) {
  					token.value = "'" + token.value;
  				}
  			} else {
  				index2 = str.indexOf(END2, index1);
  				if (index2 != -1) {
  					token.value = str.substring(index1, index2);
  					int index3 = token.value.indexOf("#");
  					if (index3 != -1) {
  						token.value = token.value.substring(1 + index3);
  					}
  					if (token.value.endsWith("'")) {
  						token.value = token.value.substring(0, token.value.length() - 1);
  					}
  					if (token.value.endsWith("\"")) {
  						token.value = token.value.substring(0, token.value.length() - 1);
  					}
  					index1 = index2;
  					token.kind = IdRefToken.IDREF;
  				} else {
  					token.value = str.substring(index1);
  					index1 = str.length();
  				}
  			}
  			return token;
  		}
  		return null;
  	}
  }