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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.util;
/**
* PrefixPrinter is a Printer which prefixes all lines with a given
* prefix.
*
* @hide
*/
public class PrefixPrinter implements Printer {
private final Printer mPrinter;
private final String mPrefix;
/**
* Creates a new PrefixPrinter.
*
* <p>If prefix is null or empty, the provided printer is returned, rather
* than making a prefixing printer.
*/
public static Printer create(Printer printer, String prefix) {
if (prefix == null || prefix.equals("")) {
return printer;
}
return new PrefixPrinter(printer, prefix);
}
private PrefixPrinter(Printer printer, String prefix) {
mPrinter = printer;
mPrefix = prefix;
}
public void println(String str) {
mPrinter.println(mPrefix + str);
}
}
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