J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | import java.io.*; |
| 29 | import java.util.Properties; |
| 30 | |
| 31 | public class JavaProcess { |
| 32 | |
| 33 | protected Process process = null; |
| 34 | |
| 35 | private String classname; |
| 36 | private StringBuilder classArgs; |
| 37 | private StringBuilder javaOptions; |
| 38 | |
| 39 | private static String java = System.getProperty("java.home") |
| 40 | + File.separator + "bin" |
| 41 | + File.separator + "java"; |
| 42 | |
| 43 | public JavaProcess(String classname) { |
| 44 | this(classname, "", ""); |
| 45 | } |
| 46 | |
| 47 | public JavaProcess(String classname, String classArgs) { |
| 48 | this(classname, "", classArgs); |
| 49 | } |
| 50 | |
| 51 | public JavaProcess(String classname, String javaOptions, String classArgs) { |
| 52 | this.classname = classname; |
| 53 | this.javaOptions = new StringBuilder(javaOptions); |
| 54 | this.classArgs = new StringBuilder(classArgs); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * add java options to the java command |
| 59 | */ |
| 60 | public void addOptions(String[] opts) { |
| 61 | if (javaOptions != null && javaOptions.length() > 0) { |
| 62 | javaOptions.append(" "); |
| 63 | } |
| 64 | |
| 65 | for (int i = 0; i < opts.length; i++) { |
| 66 | if (i != 0) { |
| 67 | javaOptions.append(" "); |
| 68 | } |
| 69 | javaOptions.append(opts[i]); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * add arguments to the class arguments |
| 75 | */ |
| 76 | public void addArguments(String[] args) { |
| 77 | if (classArgs != null && classArgs.length() > 0) { |
| 78 | classArgs.append(" "); |
| 79 | } |
| 80 | |
| 81 | for (int i = 0; i < args.length; i++) { |
| 82 | if (i != 0) { |
| 83 | classArgs.append(" "); |
| 84 | } |
| 85 | classArgs.append(args[i]); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * start the java process |
| 91 | */ |
| 92 | public void start() throws IOException { |
| 93 | if (process != null) { |
| 94 | return; |
| 95 | } |
| 96 | |
| 97 | String javaCommand = java + " " + javaOptions + " " |
| 98 | + classname + " " + classArgs; |
| 99 | |
| 100 | System.out.println("exec'ing: " + javaCommand); |
| 101 | |
| 102 | process = Runtime.getRuntime().exec(javaCommand); |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * destroy the java process |
| 107 | */ |
| 108 | public void destroy() { |
| 109 | if (process != null) { |
| 110 | process.destroy(); |
| 111 | } |
| 112 | process = null; |
| 113 | } |
| 114 | |
| 115 | public int exitValue() { |
| 116 | if (process != null) { |
| 117 | return process.exitValue(); |
| 118 | } |
| 119 | throw new RuntimeException("exitValue called with process == null"); |
| 120 | } |
| 121 | |
| 122 | public InputStream getErrorStream() { |
| 123 | if (process != null) { |
| 124 | return process.getErrorStream(); |
| 125 | } |
| 126 | throw new RuntimeException( |
| 127 | "getErrorStream() called with process == null"); |
| 128 | } |
| 129 | |
| 130 | public InputStream getInputStream() { |
| 131 | if (process != null) { |
| 132 | return process.getInputStream(); |
| 133 | } |
| 134 | throw new RuntimeException( |
| 135 | "getInputStream() called with process == null"); |
| 136 | } |
| 137 | |
| 138 | public OutputStream getOutputStream() { |
| 139 | if (process != null) { |
| 140 | return process.getOutputStream(); |
| 141 | } |
| 142 | throw new RuntimeException( |
| 143 | "getOutputStream() called with process == null"); |
| 144 | } |
| 145 | |
| 146 | public int waitFor() throws InterruptedException { |
| 147 | if (process != null) { |
| 148 | return process.waitFor(); |
| 149 | } |
| 150 | throw new RuntimeException("waitFor() called with process == null"); |
| 151 | } |
| 152 | } |