| // $Id$ |
| // |
| // 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. |
| // |
| using System; |
| |
| namespace Org.Apache.Etch.Bindings.Csharp.Util |
| { |
| public class StringTokenizer |
| { |
| public StringTokenizer(string s, string seps) |
| { |
| this.s = s; |
| this.seps = seps; |
| } |
| |
| private readonly string s; |
| |
| private readonly string seps; |
| |
| private int index = 0; |
| |
| public bool HasMoreTokens() |
| { |
| if (token == null) |
| token = GetNextToken(); |
| |
| return token != null; |
| } |
| |
| public string NextToken() |
| { |
| if (token == null) |
| { |
| token = GetNextToken(); |
| if (token == null) |
| throw new IndexOutOfRangeException("no more tokens"); |
| } |
| |
| string t = token; |
| token = null; |
| return t; |
| } |
| |
| private string GetNextToken() |
| { |
| SkipSeps(); |
| |
| int i = index; |
| while (index < s.Length && !IsSep(s[index])) |
| index++; |
| |
| if (index > i) |
| return s.Substring(i, index - i); |
| |
| return null; |
| } |
| |
| private void SkipSeps() |
| { |
| while (index < s.Length && IsSep(s[index])) |
| index++; |
| } |
| |
| private bool IsSep(char c) |
| { |
| return seps.IndexOf(c) >= 0; |
| } |
| |
| private string token; |
| } |
| } |