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/*
* Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package toolbox;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* A task to configure and run the disassembler tool, javap.
*/
public class JavapTask extends AbstractTask<JavapTask> {
private String classpath;
private List<String> options;
private List<String> classes;
/**
* Create a task to execute {@code javap} using {@code CMDLINE} mode.
* @param toolBox the {@code ToolBox} to use
*/
public JavapTask(ToolBox toolBox) {
super(toolBox, Task.Mode.CMDLINE);
}
/**
* Sets the classpath.
* @param classpath the classpath
* @return this task object
*/
public JavapTask classpath(String classpath) {
this.classpath = classpath;
return this;
}
/**
* Sets the options.
* @param options the options
* @return this task object
*/
public JavapTask options(String... options) {
this.options = Arrays.asList(options);
return this;
}
/**
* Sets the classes to be analyzed.
* @param classes the classes
* @return this task object
*/
public JavapTask classes(String... classes) {
this.classes = Arrays.asList(classes);
return this;
}
/**
* {@inheritDoc}
* @return the name "javap"
*/
@Override
public String name() {
return "javap";
}
/**
* Calls the javap tool with the arguments as currently configured.
* @return a Result object indicating the outcome of the task
* and the content of any output written to stdout, stderr, or the
* main stream.
* @throws TaskError if the outcome of the task is not as expected.
*/
@Override
public Task.Result run() {
List<String> args = new ArrayList<>();
if (options != null)
args.addAll(options);
if (classpath != null) {
args.add("-classpath");
args.add(classpath);
}
if (classes != null)
args.addAll(classes);
AbstractTask.WriterOutput direct = new AbstractTask.WriterOutput();
// These are to catch output to System.out and System.err,
// in case these are used instead of the primary streams
AbstractTask.StreamOutput sysOut = new AbstractTask.StreamOutput(System.out, System::setOut);
AbstractTask.StreamOutput sysErr = new AbstractTask.StreamOutput(System.err, System::setErr);
int rc;
Map<Task.OutputKind, String> outputMap = new HashMap<>();
try {
rc = com.sun.tools.javap.Main.run(args.toArray(new String[args.size()]), direct.pw);
} finally {
outputMap.put(Task.OutputKind.STDOUT, sysOut.close());
outputMap.put(Task.OutputKind.STDERR, sysErr.close());
outputMap.put(Task.OutputKind.DIRECT, direct.close());
}
return checkExit(new Task.Result(toolBox, this, rc, outputMap));
}
}
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