| /* |
| * 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.uima.internal.util; |
| |
| import java.io.BufferedReader; |
| import java.io.InputStreamReader; |
| import java.util.Properties; |
| |
| /** |
| * Return a java Properties object containing environment variables. |
| * |
| */ |
| public class SystemEnvReader { |
| /** |
| * Returns system environment settings. It uses OS specific system command to obtain variables. |
| * |
| * @return Java Properties object containing environment variables. |
| * @throws Throwable |
| * If any error occurred. |
| */ |
| public static Properties getEnvVars() throws Throwable { |
| Process p = null; |
| Properties envVars = new Properties(); |
| Runtime r = Runtime.getRuntime(); |
| String OS = System.getProperty("os.name").toLowerCase(); |
| if (OS.indexOf("windows 9") > -1) { |
| p = r.exec("command.com /c set"); |
| } else if ((OS.indexOf("nt") > -1) || (OS.indexOf("windows 2000") > -1) |
| || (OS.indexOf("windows xp") > -1)) { |
| p = r.exec("cmd.exe /c set"); |
| } else { |
| // our last hope, we assume Unix |
| p = r.exec("env"); |
| } |
| BufferedReader br = null; |
| try { |
| br = new BufferedReader(new InputStreamReader(p.getInputStream())); |
| String line; |
| while ((line = br.readLine()) != null) { |
| int idx = line.indexOf('='); |
| if (idx < 0) |
| continue; |
| String key = line.substring(0, idx); |
| String value = (idx < line.length() - 1) ? line.substring(idx + 1) : ""; |
| envVars.setProperty(key, value); |
| } |
| } finally { |
| if (br != null) { |
| try { |
| br.close(); |
| } catch (Exception e) { |
| // do nothing |
| } |
| } |
| } |
| return envVars; |
| } |
| |
| } |