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 * 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.
 *
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 * questions.
 */

/* @test
 @bug 7156873,8199776
 @summary ZipFileSystem regression tests
 */

import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.HashMap;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZFSTests {

    public static void main(String[] args) throws Throwable {
        test7156873();
        test8199776();
    }

    static void test7156873() throws Throwable {
        String DIRWITHSPACE = "testdir with spaces";
        Path dir = Paths.get(DIRWITHSPACE);
        Path path = Paths.get(DIRWITHSPACE, "file.zip");
        try {
            Files.createDirectory(dir);
            URI uri = URI.create("jar:" + path.toUri());
            Map<String, Object> env = new HashMap<String, Object>();
            env.put("create", "true");
            try (FileSystem fs = FileSystems.newFileSystem(uri, env)) {}
        } finally {
            Files.deleteIfExists(path);
            Files.deleteIfExists(dir);
        }
    }

    static void test8199776() throws Throwable {

        // root entry "/"
        Path path = Paths.get("rootdir.zip");
        URI uri = URI.create("jar:" + path.toUri());

        Set<String> dirs = new HashSet<>();
        Set<String> files = new HashSet<>();
        try (OutputStream os = Files.newOutputStream(path);
                ZipOutputStream zos = new ZipOutputStream(os)) {
            zos.putNextEntry(new ZipEntry("/"));
            dirs.add("/");
            zos.putNextEntry(new ZipEntry("foo"));
            files.add("/foo");
            zos.write("/foo".getBytes());
            zos.putNextEntry(new ZipEntry("bar"));
            files.add("/bar");
            zos.write("/bar".getBytes());
        }
        AtomicInteger cnt = new AtomicInteger();
        int max = 3;
        try (FileSystem fs = FileSystems.newFileSystem(uri,
                Collections.emptyMap())) {
            Files.walkFileTree(fs.getRootDirectories().iterator().next(),
                    new SimpleFileVisitor<Path>() {

                        @Override
                        public FileVisitResult visitFile(Path file,
                                BasicFileAttributes attrs) throws IOException {
                            if (cnt.incrementAndGet() > max)
                                throw new RuntimeException(
                                        "visited too many files/dirs");
                            files.remove(file.toString());
                            if (!Arrays.equals(Files.readAllBytes(file), file
                                    .toString().getBytes()))
                                throw new RuntimeException(
                                        "visited files has wrong content: "
                                                + file);
                            return FileVisitResult.CONTINUE;
                        }

                        @Override
                        public FileVisitResult preVisitDirectory(Path dir,
                                BasicFileAttributes attrs) throws IOException {
                            if (cnt.incrementAndGet() > max)
                                throw new RuntimeException(
                                        "visited too many files/dirs");
                            dirs.remove(dir.toString());
                            return FileVisitResult.CONTINUE;
                        }
                    });
            if (cnt.get() != max || dirs.size() != 0 || files.size() != 0)
                throw new RuntimeException("walk files/dirs failed");

        } finally {
            Files.deleteIfExists(path);
        }

        // absolute file/dir, no need to test cnt again..
        dirs.clear();
        files.clear();
        try (OutputStream os = Files.newOutputStream(path);
                ZipOutputStream zos = new ZipOutputStream(os)) {
            zos.putNextEntry(new ZipEntry("/"));
            dirs.add("/");
            zos.putNextEntry(new ZipEntry("/fooo/"));
            dirs.add("/fooo/");
            zos.putNextEntry(new ZipEntry("/foo"));
            files.add("/foo");
            zos.write("/foo".getBytes());
            zos.putNextEntry(new ZipEntry("/bar"));
            files.add("/bar");
            zos.write("/bar".getBytes());
            zos.putNextEntry(new ZipEntry("/fooo/bar"));
            files.add("/fooo/bar");
            zos.write("/fooo/bar".getBytes());
        }

        try (FileSystem fs = FileSystems.newFileSystem(uri,
                Collections.emptyMap())) {
            Files.walkFileTree(fs.getRootDirectories().iterator().next(),
                    new SimpleFileVisitor<Path>() {
                        @Override
                        public FileVisitResult visitFile(Path file,
                                BasicFileAttributes attrs) throws IOException {
                            files.remove(file.toString());
                            if (!Arrays.equals(Files.readAllBytes(file), file
                                    .toString().getBytes()))
                                throw new RuntimeException(
                                        "visited files has wrong content: "
                                                + file);
                            return FileVisitResult.CONTINUE;
                        }

                        @Override
                        public FileVisitResult preVisitDirectory(Path dir,
                                BasicFileAttributes attrs) throws IOException {
                            dirs.remove(dir.toString());
                            return FileVisitResult.CONTINUE;
                        }
                    });
            if (dirs.size() != 0 || files.size() != 0)
                throw new RuntimeException("walk files/dirs failed");
        }
    }
}