| // Copyright 2020 The Bazel Authors. All rights reserved. |
| // |
| // 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.devtools.build.lib.runtime.commands.info; |
| |
| import com.google.common.base.Supplier; |
| import com.google.devtools.build.lib.analysis.config.BuildConfiguration; |
| import com.google.devtools.build.lib.runtime.CommandEnvironment; |
| import com.google.devtools.build.lib.runtime.InfoItem; |
| import com.google.devtools.build.lib.vfs.Path; |
| |
| /** Info item for the location of the Java runtime. */ |
| public final class JavaHomeInfoItem extends InfoItem { |
| public JavaHomeInfoItem() { |
| super("java-home", "Location of the current Java runtime.", false); |
| } |
| |
| @Override |
| public byte[] get(Supplier<BuildConfiguration> configurationSupplier, CommandEnvironment env) { |
| String javaHome = System.getProperty("java.home"); |
| if (javaHome == null) { |
| return print("unknown"); |
| } |
| // Tunnel through a Path object in order to normalize the representation of the path. |
| Path javaHomePath = env.getRuntime().getFileSystem().getPath(javaHome); |
| return print(javaHomePath.getPathString()); |
| } |
| } |