/*

 * 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

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 */

/* @test

 * @bug 6237956

 * @summary We must be able to read zip files created by Unix Info-Zip

 * @author Martin Buchholz

 */

import java.util.*;

import java.util.zip.*;

import java.io.*;

public class InfoZip {

    static int passed = 0, failed = 0;

    static void fail(String msg) {

        failed++;

        new Exception(msg).printStackTrace();

    }

    static void unexpected(Throwable t) {

        failed++;

        t.printStackTrace();

    }

    static void check(boolean condition, String msg) {

        if (! condition)

            fail(msg);

    }

    static void check(boolean condition) {

        check(condition, "Something's wrong");

    }

    private static String contents(ZipFile zf, ZipEntry ze) throws Exception {

        InputStream is = zf.getInputStream(ze);

        String result = contents(is);

        is.close();

        return result;

    }

    private static String contents(InputStream is) throws Exception {

        StringBuilder sb = new StringBuilder();

        int c;

        while ((c = is.read()) != -1)

            sb.append((char)c);

        return sb.toString();

    }

    private static void checkZipEntry(ZipEntry ze, String contents) {

        check(ze.getName().equals("someFile"), "filename");

        check(ze.getExtra() != null, "extra");

        check(contents.equals("Message in a Bottle\n"), "contents");

        check(ze.getSize() == "Message in a Bottle\n".length());

    }

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

        //----------------------------------------------------------------

        // The file InfoZip.zip was created using Unix Info-Zip's zip, thus:

        // echo Message in a Bottle > someFile; zip InfoZip.zip someFile

        // Such a file has a LOC extra different from the CEN extra,

        // which cannot happen using JDK APIs.

        //----------------------------------------------------------------

        File f = new File("InfoZip.zip");

        try (OutputStream os = new FileOutputStream(f)) {

            os.write(new byte[]

                {'P', 'K', 3, 4, 10, 0, 0, 0, 0, 0, -68, 8, 'k',

                 '2', 'V', -7, 'm', 9, 20, 0, 0, 0, 20, 0, 0, 0,

                 8, 0, 21, 0, 's', 'o', 'm', 'e', 'F', 'i', 'l', 'e', 'U',

                 'T', 9, 0, 3, 't', '_', '1', 'B', 't', '_', '1', 'B', 'U',

                 'x', 4, 0, -14, 'v', 26, 4, 'M', 'e', 's', 's', 'a', 'g',

                 'e', ' ', 'i', 'n', ' ', 'a', ' ', 'B', 'o', 't', 't', 'l', 'e',

                 10, 'P', 'K', 1, 2, 23, 3, 10, 0, 0, 0, 0, 0,

                 -68, 8, 'k', '2', 'V', -7, 'm', 9, 20, 0, 0, 0, 20,

                 0, 0, 0, 8, 0, 13, 0, 0, 0, 0, 0, 1, 0,

                 0, 0, -92, -127, 0, 0, 0, 0, 's', 'o', 'm', 'e', 'F',

                 'i', 'l', 'e', 'U', 'T', 5, 0, 3, 't', '_', '1', 'B', 'U',

                 'x', 0, 0, 'P', 'K', 5, 6, 0, 0, 0, 0, 1, 0,

                 1, 0, 'C', 0, 0, 0, 'O', 0, 0, 0, 0, 0, });

        }

        ZipEntry ze = null;

        try (ZipFile zf = new ZipFile(f)) {

            Enumeration<? extends ZipEntry> entries = zf.entries();

            ze = entries.nextElement();

            check(! entries.hasMoreElements());

            checkZipEntry(ze, contents(zf, ze));

        }

        try (FileInputStream fis = new FileInputStream(f);

             ZipInputStream is = new ZipInputStream(fis))

        {

            ze = is.getNextEntry();

            checkZipEntry(ze, contents(is));

            check(is.getNextEntry() == null);

        }

        f.delete();

        System.out.printf("passed = %d, failed = %d%n", passed, failed);

        if (failed > 0) throw new Exception("Some tests failed");

    }

}