org.apache.tools.ant.taskdefs.compilers.JavacExternal Maven / Gradle / Ivy
/*
* 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.tools.ant.taskdefs.compilers;
import java.io.File;
import java.io.IOException;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.condition.Os;
import org.apache.tools.ant.types.Commandline;
import org.apache.tools.ant.util.FileUtils;
import org.apache.tools.ant.util.JavaEnvUtils;
/**
* Performs a compile using javac externally.
*
* @since Ant 1.4
*/
public class JavacExternal extends DefaultCompilerAdapter {
/**
* Performs a compile using the Javac externally.
* @return true if the compilation succeeded
* @throws BuildException on error
*/
public boolean execute() throws BuildException {
attributes.log("Using external javac compiler", Project.MSG_VERBOSE);
Commandline cmd = new Commandline();
cmd.setExecutable(getJavac().getJavacExecutable());
if (!assumeJava11() && !assumeJava12()) {
setupModernJavacCommandlineSwitches(cmd);
} else {
setupJavacCommandlineSwitches(cmd, true);
}
int firstFileName = assumeJava11() ? -1 : cmd.size();
logAndAddFilesToCompile(cmd);
//On VMS platform, we need to create a special java options file
//containing the arguments and classpath for the javac command.
//The special file is supported by the "-V" switch on the VMS JVM.
if (Os.isFamily("openvms")) {
return execOnVMS(cmd, firstFileName);
}
return
executeExternalCompile(cmd.getCommandline(), firstFileName,
true)
== 0;
}
/**
* helper method to execute our command on VMS.
* @param cmd Commandline
* @param firstFileName int
* @return boolean
*/
private boolean execOnVMS(Commandline cmd, int firstFileName) {
File vmsFile = null;
try {
vmsFile = JavaEnvUtils.createVmsJavaOptionFile(cmd.getArguments());
String[] commandLine = {cmd.getExecutable(),
"-V",
vmsFile.getPath()};
return 0 == executeExternalCompile(commandLine,
firstFileName,
true);
} catch (IOException e) {
throw new BuildException("Failed to create a temporary file for \"-V\" switch");
} finally {
FileUtils.delete(vmsFile);
}
}
}