| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.geronimo.gshell.ansi; |
| |
| import jline.Terminal; |
| |
| /** |
| * Provides support for using ANSI color escape codes. |
| * |
| * @version $Rev$ $Date$ |
| */ |
| public class Ansi |
| { |
| /** |
| * Tries to detect if the current system supports ANSI. |
| */ |
| private static boolean detect() { |
| boolean enabled = Terminal.getTerminal().isANSISupported(); |
| |
| if (!enabled) { |
| String force = System.getProperty(Ansi.class.getName() + ".force", "false"); |
| enabled = Boolean.valueOf(force); |
| } |
| |
| return enabled; |
| } |
| |
| public static boolean isDetected() { |
| return detect(); |
| } |
| |
| private static final InheritableThreadLocal<Boolean> holder = new InheritableThreadLocal<Boolean>() { |
| @Override |
| protected Boolean initialValue() { |
| return isDetected(); |
| } |
| }; |
| |
| public static void setEnabled(final boolean flag) { |
| holder.set(flag); |
| } |
| |
| public static boolean isEnabled() { |
| return holder.get(); |
| } |
| } |