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/*
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* Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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*******************************************************************************
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* Copyright (C) 2009, International Business Machines Corporation and *
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* others. All Rights Reserved. *
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*******************************************************************************
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*/
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package sun.util.locale;
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public class StringTokenIterator {
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private String text;
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private String dlms; // null if a single char delimiter
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private char delimiterChar; // delimiter if a single char delimiter
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private String token;
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private int start;
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private int end;
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private boolean done;
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public StringTokenIterator(String text, String dlms) {
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this.text = text;
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if (dlms.length() == 1) {
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delimiterChar = dlms.charAt(0);
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} else {
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this.dlms = dlms;
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}
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setStart(0);
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}
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public String first() {
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setStart(0);
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return token;
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}
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public String current() {
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return token;
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}
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public int currentStart() {
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return start;
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}
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public int currentEnd() {
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return end;
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}
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public boolean isDone() {
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return done;
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}
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public String next() {
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if (hasNext()) {
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start = end + 1;
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end = nextDelimiter(start);
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token = text.substring(start, end);
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} else {
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start = end;
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token = null;
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done = true;
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}
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return token;
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}
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public boolean hasNext() {
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return (end < text.length());
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}
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public StringTokenIterator setStart(int offset) {
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if (offset > text.length()) {
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throw new IndexOutOfBoundsException();
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}
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start = offset;
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end = nextDelimiter(start);
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token = text.substring(start, end);
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done = false;
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return this;
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}
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public StringTokenIterator setText(String text) {
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this.text = text;
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setStart(0);
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return this;
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}
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private int nextDelimiter(int start) {
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int textlen = this.text.length();
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if (dlms == null) {
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for (int idx = start; idx < textlen; idx++) {
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if (text.charAt(idx) == delimiterChar) {
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return idx;
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}
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}
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} else {
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int dlmslen = dlms.length();
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for (int idx = start; idx < textlen; idx++) {
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char c = text.charAt(idx);
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for (int i = 0; i < dlmslen; i++) {
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if (c == dlms.charAt(i)) {
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return idx;
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}
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}
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}
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}
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return textlen;
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}
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}
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