/*
* 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;
}