| /* gnuStringIntMapper.java -- |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath 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 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.javax.swing.text.html.parser.support; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.TreeMap; |
| |
| /** |
| * A helper class, mapping between the strings and they unique integer |
| * identifiers. |
| * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) |
| */ |
| public abstract class gnuStringIntMapper |
| { |
| /** |
| * Maps argument integer values from DTDConstants into they string |
| * names. Initialized on demand. |
| */ |
| private Map is_Map; |
| |
| /** |
| * Maps argument string names into they integer values from DTDConstants. |
| * Initialized on demand. |
| */ |
| private Map si_Map; |
| |
| /** |
| * Get string from id or null if no such id is present in the mapper. |
| */ |
| public final String get(int id) |
| { |
| if (is_Map == null) |
| createTheMap(); |
| |
| return (String) is_Map.get(new Integer(id)); |
| } |
| |
| /** Get id from string or 0 if no such string is present in the mapper. */ |
| public final int get(String id) |
| { |
| if (si_Map == null) |
| createTheMap(); |
| |
| Integer i = (Integer) si_Map.get(id); |
| |
| return i != null ? i.intValue() : 0; |
| } |
| |
| /** |
| * Create the mapping table for this mapper by adding the required |
| * String/int pairs. The method is invoked |
| * only once for each instance, after the first invocation of the any |
| * form of the <code>get</code> method. Use <code>add</code> to |
| * create a map for a concrete instance. |
| */ |
| protected abstract void create(); |
| |
| /** |
| * Add an id/string pair to this mapper. This is called from |
| * the method <code>create</code> only. |
| */ |
| protected void add(String name, int id) |
| { |
| Integer i = new Integer(id); |
| si_Map.put(name, i); |
| is_Map.put(i, name); |
| } |
| |
| private void createTheMap() |
| { |
| is_Map = new HashMap(); |
| si_Map = new TreeMap(); |
| create(); |
| } |
| } |