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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2017, Arnaud Roques
*
* Project Info: http://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* http://plantuml.com/patreon (only 1$ per month!)
* http://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.suggest;
public class VariatorSwapLetter extends VariatorIteratorAdaptor {
private final String data;
private int i;
public VariatorSwapLetter(String data) {
this.data = data;
ensureTwoLetters();
}
private void ensureTwoLetters() {
while (i < data.length() - 1 && areTwoLetters() == false) {
i++;
}
}
private boolean areTwoLetters() {
return Character.isLetter(data.charAt(i)) && Character.isLetter(data.charAt(i + 1));
}
@Override
Variator getVariator() {
return new Variator() {
public String getData() {
if (i >= data.length() - 1) {
return null;
}
return data.substring(0, i) + data.charAt(i + 1) + data.charAt(i) + data.substring(i + 2);
}
public void nextStep() {
i++;
ensureTwoLetters();
}
};
}
}
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