/*

 * Copyright (c) 2009, 2015, 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.

 */

/*

 * @test

 * @bug 6879371

 * @summary javap does not close internal default file manager

 */

import java.io.*;

import java.util.zip.*;

public class T6879371 {

    public static void main(String[] args) throws Exception {

        new T6879371().run();

    }

    public void run() throws Exception {

        // create a simple test class which we can put into

        // a test zip file and know that it will be used by

        // javap.

        File classDir = new File("classes");

        classDir.mkdir();

        String className = "Test";

        File javaFile = writeTestFile(className);

        compileTestFile(classDir, javaFile);

        test(classDir, className, false);

        test(classDir, className, true);

    }

    void test(File classDir, String className, boolean useJavaUtilZip) throws Exception {

        // javac should really not be using system properties like this

        // -- it should really be using (hidden) options -- but until then

        // take care to leave system properties as we find them, so as not

        // to adversely affect other tests that might follow.

        String prev = System.getProperty("useJavaUtilZip");

        setProperty("useJavaUtilZip", (useJavaUtilZip ? "true" : null));

        try {

            File zipFile = zip(classDir, new File(classDir + ".zip"));

            javap("-classpath", zipFile.getPath(), className);

            if (!zipFile.delete())

                throw new Exception("failed to delete " + zipFile);

        } finally {

            setProperty("useJavaUtilZip", prev);

        }

    }

    File writeTestFile(String name) throws IOException {

        File f = new File(name + ".java");

        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));

        out.println("class " + name + " { }");

        out.close();

        return f;

    }

    void compileTestFile(File classDir, File file) {

        int rc = com.sun.tools.javac.Main.compile(

           new String[] { "-d", classDir.getPath(), file.getPath() });

        if (rc != 0)

            throw new Error("compilation failed. rc=" + rc);

    }

    File zip(File dir, File zipFile) throws IOException {

        ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));

        for (File file: dir.listFiles()) {

            if (file.isFile()) {

                byte[] data = new byte[(int) file.length()];

                DataInputStream in = new DataInputStream(new FileInputStream(file));

                in.readFully(data);

                in.close();

                zipOut.putNextEntry(new ZipEntry(file.getName()));

                zipOut.write(data, 0, data.length);

                zipOut.closeEntry();

            }

        }

        zipOut.close();

        return zipFile;

    }

    String javap(String... args) {

        StringWriter sw = new StringWriter();

        PrintWriter out = new PrintWriter(sw);

        int rc = com.sun.tools.javap.Main.run(args, out);

        if (rc != 0)

            throw new Error("javap failed. rc=" + rc);

        out.close();

        return sw.toString();

    }

    void setProperty(String key, String value) {

        if (value != null)

            System.setProperty(key, value);

        else

            System.getProperties().remove(key);

    }

}