| /* |
| * Copyright 2013 Google Inc. |
| * |
| * 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 com.google.gwt.logging.impl; |
| |
| import java.io.FilterOutputStream; |
| import java.io.PrintStream; |
| |
| /** |
| * A {@link PrintStream} implementation that implements only a subset of methods that is enough to |
| * be used with {@link Throwable#printStackTrace(PrintStream)}. |
| * <p> |
| * Note that all implemented methods marked as final except two methods that are safe to be |
| * overridden by the subclasses: {@link #append(String)} {@link #newLine()}. |
| */ |
| public class StackTracePrintStream extends PrintStream { |
| |
| private final StringBuilder builder; |
| |
| public StackTracePrintStream(StringBuilder builder) { |
| super(new FilterOutputStream(null)); |
| this.builder = builder; |
| } |
| |
| /** |
| * Appends some text to the output. |
| */ |
| protected void append(String text) { |
| builder.append(text); |
| } |
| |
| /** |
| * Appends a newline to the output. |
| */ |
| protected void newLine() { |
| builder.append("\n"); |
| } |
| |
| @Override |
| public final void print(Object obj) { |
| append(String.valueOf(obj)); |
| } |
| |
| @Override |
| public final void println(Object obj) { |
| append(String.valueOf(obj)); |
| newLine(); |
| } |
| |
| @Override |
| public final void print(String str) { |
| append(str); |
| } |
| |
| @Override |
| public final void println() { |
| newLine(); |
| } |
| |
| @Override |
| public final void println(String str) { |
| append(str); |
| newLine(); |
| } |
| } |