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