| /* |
| * 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); |
| } |
| } |