| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.lucene.util; |
| |
| |
| /** Used for parsing Version strings so we don't have to |
| * use overkill String.split nor StringTokenizer (which silently |
| * skips empty tokens). */ |
| |
| final class StrictStringTokenizer { |
| |
| public StrictStringTokenizer(String s, char delimiter) { |
| this.s = s; |
| this.delimiter = delimiter; |
| } |
| |
| public final String nextToken() { |
| if (pos < 0) { |
| throw new IllegalStateException("no more tokens"); |
| } |
| |
| int pos1 = s.indexOf(delimiter, pos); |
| String s1; |
| if (pos1 >= 0) { |
| s1 = s.substring(pos, pos1); |
| pos = pos1+1; |
| } else { |
| s1 = s.substring(pos); |
| pos=-1; |
| } |
| |
| return s1; |
| } |
| |
| public final boolean hasMoreTokens() { |
| return pos >= 0; |
| } |
| |
| private final String s; |
| private final char delimiter; |
| private int pos; |
| } |