org.jline.reader.impl.SimpleMaskingCallback Maven / Gradle / Ivy
/*
* Copyright (c) 2002-2017, the original author or authors.
*
* This software is distributable under the BSD license. See the terms of the
* BSD license in the documentation provided with this software.
*
* http://www.opensource.org/licenses/bsd-license.php
*/
package org.jline.reader.impl;
import org.jline.reader.MaskingCallback;
import java.util.Objects;
/**
* Simple {@link MaskingCallback} that will replace all the characters in the line with the given mask.
* If the given mask is equal to {@link LineReaderImpl#NULL_MASK} then the line will be replaced with an empty String.
*/
public final class SimpleMaskingCallback implements MaskingCallback {
private final Character mask;
public SimpleMaskingCallback(Character mask) {
this.mask = Objects.requireNonNull(mask, "mask must be a non null character");
}
@Override
public String display(String line) {
if (mask.equals(LineReaderImpl.NULL_MASK)) {
return "";
} else {
StringBuilder sb = new StringBuilder(line.length());
for (int i = line.length(); i-- > 0;) {
sb.append((char) mask);
}
return sb.toString();
}
}
@Override
public String history(String line) {
return null;
}
}