1 package org.sentrysoftware.jawk.jrt;
2
3 /*-
4 * ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
5 * Jawk
6 * ჻჻჻჻჻჻
7 * Copyright (C) 2006 - 2023 Sentry Software
8 * ჻჻჻჻჻჻
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation, either version 3 of the
12 * License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Lesser Public License for more details.
18 *
19 * You should have received a copy of the GNU General Lesser Public
20 * License along with this program. If not, see
21 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
22 * ╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱
23 */
24
25 import java.util.Enumeration;
26
27 /**
28 * Similar to StringTokenizer, except that tokens are delimited
29 * by a single character.
30 *
31 * @author Danny Daglas
32 */
33 public class SingleCharacterTokenizer implements Enumeration<Object> {
34
35 private String input;
36 private int splitChar;
37 private int idx = 0;
38
39 /**
40 * Construct a RegexTokenizer.
41 *
42 * @param input The input string to tokenize.
43 * @param splitChar The character which delineates tokens
44 * within the input string.
45 */
46 public SingleCharacterTokenizer(String input, int splitChar) {
47 // input + sentinel
48 this.input = input + ((char) splitChar);
49 this.splitChar = splitChar;
50 }
51
52 /** {@inheritDoc} */
53 @Override
54 public boolean hasMoreElements() {
55 return idx < input.length();
56 }
57
58 private StringBuffer sb = new StringBuffer();
59
60 /** {@inheritDoc} */
61 @Override
62 public Object nextElement() {
63 sb.setLength(0);
64 while (idx < input.length()) {
65 if (input.charAt(idx) == splitChar) {
66 ++idx;
67 break;
68 } else {
69 sb.append(input.charAt(idx++));
70 }
71 }
72
73 return sb.toString();
74 }
75 }