[14982] | 1 | /*
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| 2 | * Copyright 2000,2002,2004 The Apache Software Foundation
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | *
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| 16 | */
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| 17 |
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| 18 | package org.apache.tools.ant.taskdefs;
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| 19 |
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| 20 | import java.io.BufferedReader;
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| 21 | import java.io.File;
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| 22 | import java.io.FileWriter;
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| 23 | import java.io.IOException;
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| 24 | import java.io.InputStream;
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| 25 | import java.io.InputStreamReader;
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| 26 | import java.io.PrintWriter;
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| 27 | import org.apache.tools.ant.BuildException;
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| 28 | import org.apache.tools.ant.Project;
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| 29 | import org.apache.tools.ant.Task;
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| 30 |
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| 31 | /**
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| 32 | * Executes a given command if the os platform is appropriate.
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| 33 | *
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| 34 | * <p><strong>As of Ant 1.2, this class is no longer the
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| 35 | * implementation of Ant's <exec> task - it is considered to be
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| 36 | * dead code by the Ant developers and is unmaintained. Don't use
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| 37 | * it.</strong></p>
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| 38 |
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| 39 | *
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| 40 | * @deprecated delegate to {@link org.apache.tools.ant.taskdefs.Execute Execute}
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| 41 | * instead.
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| 42 | */
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| 43 | public class Exec extends Task {
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| 44 | private String os;
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| 45 | private String out;
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| 46 | private File dir;
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| 47 | private String command;
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| 48 | protected PrintWriter fos = null;
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| 49 | private boolean failOnError = false;
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| 50 |
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| 51 | public Exec() {
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| 52 | System.err.println("As of Ant 1.2 released in October 2000, "
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| 53 | + "the Exec class");
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| 54 | System.err.println("is considered to be dead code by the Ant "
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| 55 | + "developers and is unmaintained.");
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| 56 | System.err.println("Don\'t use it!");
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| 57 | }
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| 58 |
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| 59 | public void execute() throws BuildException {
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| 60 | run(command);
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| 61 | }
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| 62 |
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| 63 | protected int run(String command) throws BuildException {
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| 64 |
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| 65 | int err = -1; // assume the worst
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| 66 |
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| 67 | // test if os match
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| 68 | String myos = System.getProperty("os.name");
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| 69 | log("Myos = " + myos, Project.MSG_VERBOSE);
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| 70 | if ((os != null) && (os.indexOf(myos) < 0)) {
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| 71 | // this command will be executed only on the specified OS
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| 72 | log("Not found in " + os, Project.MSG_VERBOSE);
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| 73 | return 0;
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| 74 | }
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| 75 |
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| 76 | // default directory to the project's base directory
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| 77 | if (dir == null) {
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| 78 | dir = getProject().getBaseDir();
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| 79 | }
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| 80 |
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| 81 | if (myos.toLowerCase().indexOf("windows") >= 0) {
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| 82 | if (!dir.equals(getProject().resolveFile("."))) {
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| 83 | if (myos.toLowerCase().indexOf("nt") >= 0) {
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| 84 | command = "cmd /c cd " + dir + " && " + command;
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| 85 | } else {
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| 86 | String ant = getProject().getProperty("ant.home");
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| 87 | if (ant == null) {
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| 88 | throw new BuildException("Property 'ant.home' not "
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| 89 | + "found", getLocation());
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| 90 | }
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| 91 |
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| 92 | String antRun = getProject().resolveFile(ant + "/bin/antRun.bat").toString();
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| 93 | command = antRun + " " + dir + " " + command;
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| 94 | }
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| 95 | }
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| 96 | } else {
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| 97 | String ant = getProject().getProperty("ant.home");
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| 98 | if (ant == null) {
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| 99 | throw new BuildException("Property 'ant.home' not found",
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| 100 | getLocation());
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| 101 | }
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| 102 | String antRun = getProject().resolveFile(ant + "/bin/antRun").toString();
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| 103 |
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| 104 | command = antRun + " " + dir + " " + command;
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| 105 | }
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| 106 |
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| 107 | try {
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| 108 | // show the command
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| 109 | log(command, Project.MSG_VERBOSE);
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| 110 |
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| 111 | // exec command on system runtime
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| 112 | Process proc = Runtime.getRuntime().exec(command);
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| 113 |
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| 114 | if (out != null) {
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| 115 | fos = new PrintWriter(new FileWriter(out));
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| 116 | log("Output redirected to " + out, Project.MSG_VERBOSE);
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| 117 | }
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| 118 |
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| 119 | // copy input and error to the output stream
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| 120 | StreamPumper inputPumper =
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| 121 | new StreamPumper(proc.getInputStream(), Project.MSG_INFO);
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| 122 | StreamPumper errorPumper =
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| 123 | new StreamPumper(proc.getErrorStream(), Project.MSG_WARN);
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| 124 |
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| 125 | // starts pumping away the generated output/error
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| 126 | inputPumper.start();
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| 127 | errorPumper.start();
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| 128 |
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| 129 | // Wait for everything to finish
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| 130 | proc.waitFor();
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| 131 | inputPumper.join();
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| 132 | errorPumper.join();
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| 133 | proc.destroy();
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| 134 |
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| 135 | // close the output file if required
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| 136 | logFlush();
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| 137 |
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| 138 | // check its exit value
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| 139 | err = proc.exitValue();
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| 140 | if (err != 0) {
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| 141 | if (failOnError) {
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| 142 | throw new BuildException("Exec returned: " + err, getLocation());
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| 143 | } else {
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| 144 | log("Result: " + err, Project.MSG_ERR);
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| 145 | }
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| 146 | }
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| 147 | } catch (IOException ioe) {
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| 148 | throw new BuildException("Error exec: " + command, ioe, getLocation());
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| 149 | } catch (InterruptedException ex) {
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| 150 | //ignore
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| 151 | }
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| 152 |
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| 153 | return err;
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| 154 | }
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| 155 |
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| 156 | public void setDir(String d) {
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| 157 | this.dir = getProject().resolveFile(d);
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| 158 | }
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| 159 |
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| 160 | public void setOs(String os) {
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| 161 | this.os = os;
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| 162 | }
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| 163 |
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| 164 | public void setCommand(String command) {
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| 165 | this.command = command;
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| 166 | }
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| 167 |
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| 168 | public void setOutput(String out) {
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| 169 | this.out = out;
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| 170 | }
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| 171 |
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| 172 | public void setFailonerror(boolean fail) {
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| 173 | failOnError = fail;
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| 174 | }
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| 175 |
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| 176 | protected void outputLog(String line, int messageLevel) {
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| 177 | if (fos == null) {
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| 178 | log(line, messageLevel);
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| 179 | } else {
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| 180 | fos.println(line);
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| 181 | }
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| 182 | }
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| 183 |
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| 184 | protected void logFlush() {
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| 185 | if (fos != null) {
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| 186 | fos.close();
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| 187 | }
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| 188 | }
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| 189 |
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| 190 | // Inner class for continually pumping the input stream during
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| 191 | // Process's runtime.
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| 192 | class StreamPumper extends Thread {
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| 193 | private BufferedReader din;
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| 194 | private int messageLevel;
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| 195 | private boolean endOfStream = false;
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| 196 | private int SLEEP_TIME = 5;
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| 197 |
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| 198 | public StreamPumper(InputStream is, int messageLevel) {
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| 199 | this.din = new BufferedReader(new InputStreamReader(is));
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| 200 | this.messageLevel = messageLevel;
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| 201 | }
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| 202 |
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| 203 | public void pumpStream() throws IOException {
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| 204 | if (!endOfStream) {
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| 205 | String line = din.readLine();
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| 206 |
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| 207 | if (line != null) {
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| 208 | outputLog(line, messageLevel);
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| 209 | } else {
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| 210 | endOfStream = true;
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| 211 | }
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| 212 | }
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| 213 | }
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| 214 |
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| 215 | public void run() {
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| 216 | try {
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| 217 | try {
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| 218 | while (!endOfStream) {
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| 219 | pumpStream();
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| 220 | sleep(SLEEP_TIME);
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| 221 | }
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| 222 | } catch (InterruptedException ie) {
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| 223 | //ignore
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| 224 | }
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| 225 | din.close();
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| 226 | } catch (IOException ioe) {
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| 227 | // ignore
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| 228 | }
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| 229 | }
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| 230 | }
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| 231 | }
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