001    package org.apache.myfaces.tobago.util;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one or more
005     * contributor license agreements.  See the NOTICE file distributed with
006     * this work for additional information regarding copyright ownership.
007     * The ASF licenses this file to You under the Apache License, Version 2.0
008     * (the "License"); you may not use this file except in compliance with
009     * the License.  You may obtain a copy of the License at
010     *
011     *      http://www.apache.org/licenses/LICENSE-2.0
012     *
013     * Unless required by applicable law or agreed to in writing, software
014     * distributed under the License is distributed on an "AS IS" BASIS,
015     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016     * See the License for the specific language governing permissions and
017     * limitations under the License.
018     */
019    
020    /*
021     * Created 29.03.2004 at 14:58:11.
022     * $Id: RangeParser.java 578592 2007-09-23 18:51:32Z bommel $
023     */
024    
025    import java.util.ArrayList;
026    import java.util.List;
027    import java.util.StringTokenizer;
028    
029    public class RangeParser {
030    
031      public static int[] getIndices(String list) {
032        List indexList = new ArrayList();
033        StringTokenizer st = new StringTokenizer(list, ",");
034        while (st.hasMoreTokens()) {
035          String token = st.nextToken().trim();
036          int idx = token.indexOf('-');
037          if (idx == -1) {
038            indexList.add(token);
039          } else {
040            int start = Integer.parseInt(token.substring(0, idx).trim());
041            int end = Integer.parseInt(token.substring(idx + 1).trim());
042            if (start < end) {
043              for (int i = start; i < end + 1; i++) {
044                indexList.add(Integer.toString(i));
045              }
046            } else {
047              for (int i = start; i > end - 1; i--) {
048                indexList.add(Integer.toString(i));
049              }
050            }
051          }
052        }
053    
054        int[] indices = new int[indexList.size()];
055        for (int i = 0; i < indices.length; i++) {
056          indices[i] = Integer.parseInt((String) indexList.get(i));
057        }
058        return indices;
059      }
060    }