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