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1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  */
18
19 package org.apache.tools.ant.taskdefs.compilers;
20
21 import java.io.IOException JavaDoc;
22 import java.io.File JavaDoc;
23
24 import org.apache.tools.ant.BuildException;
25 import org.apache.tools.ant.Project;
26 import org.apache.tools.ant.types.Commandline;
27 import org.apache.tools.ant.taskdefs.condition.Os;
28 import org.apache.tools.ant.util.JavaEnvUtils;
29 import org.apache.tools.ant.util.FileUtils;
30
31 /**
32  * Performs a compile using javac externally.
33  *
34  * @since Ant 1.4
35  */
36 public class JavacExternal extends DefaultCompilerAdapter {
37
38     /**
39      * Performs a compile using the Javac externally.
40      * @return true if the compilation succeeded
41      * @throws BuildException on error
42      */
43     public boolean execute() throws BuildException {
44         attributes.log("Using external javac compiler", Project.MSG_VERBOSE);
45
46         Commandline cmd = new Commandline();
47         cmd.setExecutable(getJavac().getJavacExecutable());
48         if (!assumeJava11() && !assumeJava12()) {
49             setupModernJavacCommandlineSwitches(cmd);
50         } else {
51             setupJavacCommandlineSwitches(cmd, true);
52         }
53         int firstFileName = assumeJava11() ? -1 : cmd.size();
54         logAndAddFilesToCompile(cmd);
55         //On VMS platform, we need to create a special java options file
56 //containing the arguments and classpath for the javac command.
57 //The special file is supported by the "-V" switch on the VMS JVM.
58 if (Os.isFamily("openvms")) {
59             return execOnVMS(cmd, firstFileName);
60         }
61         return
62                 executeExternalCompile(cmd.getCommandline(), firstFileName,
63                         true)
64                 == 0;
65     }
66
67     /**
68      * helper method to execute our command on VMS.
69      * @param cmd
70      * @param firstFileName
71      * @return
72      */
73     private boolean execOnVMS(Commandline cmd, int firstFileName) {
74         File JavaDoc vmsFile = null;
75         try {
76             vmsFile = JavaEnvUtils.createVmsJavaOptionFile(cmd.getArguments());
77             String JavaDoc[] commandLine = {cmd.getExecutable(),
78                                     "-V",
79                                     vmsFile.getPath()};
80             return 0 == executeExternalCompile(commandLine,
81                             firstFileName,
82                             true);
83
84         } catch (IOException JavaDoc e) {
85             throw new BuildException("Failed to create a temporary file for \"-V\" switch");
86         } finally {
87             FileUtils.delete(vmsFile);
88         }
89     }
90
91 }
92
93
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