/*

 * 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 4313887 6838333 6925932

 * @summary Unit test for java.nio.file.Path path operations

 */

import java.nio.file.*;

public class PathOps {

    static final java.io.PrintStream out = System.out;

    private String input;

    private Path path;

    private Exception exc;

    private PathOps(String s) {

        out.println();

        input = s;

        try {

            path = FileSystems.getDefault().getPath(s);

            out.format("%s -> %s", s, path);

        } catch (Exception x) {

            exc = x;

            out.format("%s -> %s", s, x);

        }

        out.println();

    }

    Path path() {

        return path;

    }

    void fail() {

        throw new RuntimeException("PathOps failed");

    }

    void checkPath() {

        if (path == null) {

            throw new InternalError("path is null");

        }

    }

    void check(Object result, String expected) {

        out.format("\tExpected: %s\n", expected);

        out.format("\tActual: %s\n",  result);

        if (result == null) {

            if (expected == null) return;

        } else {

            // compare string representations

            if (expected != null && result.toString().equals(expected.toString()))

                return;

        }

        fail();

    }

    void check(Object result, boolean expected) {

        check(result, Boolean.toString(expected));

    }

    PathOps root(String expected) {

        out.println("check root");

        checkPath();

        check(path.getRoot(), expected);

        return this;

    }

    PathOps parent(String expected) {

        out.println("check parent");

        checkPath();

        check(path.getParent(), expected);

        return this;

    }

    PathOps name(String expected) {

        out.println("check name");

        checkPath();

        check(path.getName(), expected);

        return this;

    }

    PathOps element(int index, String expected) {

        out.format("check element %d\n", index);

        checkPath();

        check(path.getName(index), expected);

        return this;

    }

    PathOps subpath(int startIndex, int endIndex, String expected) {

        out.format("test subpath(%d,%d)\n", startIndex, endIndex);

        checkPath();

        check(path.subpath(startIndex, endIndex), expected);

        return this;

    }

    PathOps starts(String prefix) {

        out.format("test startsWith with %s\n", prefix);

        checkPath();

        Path s = FileSystems.getDefault().getPath(prefix);

        check(path.startsWith(s), true);

        return this;

    }

    PathOps notStarts(String prefix) {

        out.format("test not startsWith with %s\n", prefix);

        checkPath();

        Path s = FileSystems.getDefault().getPath(prefix);

        check(path.startsWith(s), false);

        return this;

    }

    PathOps ends(String suffix) {

        out.format("test endsWith %s\n", suffix);

        checkPath();

        Path s = FileSystems.getDefault().getPath(suffix);

        check(path.endsWith(s), true);

        return this;

    }

    PathOps notEnds(String suffix) {

        out.format("test not endsWith %s\n", suffix);

        checkPath();

        Path s = FileSystems.getDefault().getPath(suffix);

        check(path.endsWith(s), false);

        return this;

    }

    PathOps absolute() {

        out.println("check path is absolute");

        checkPath();

        check(path.isAbsolute(), true);

        return this;

    }

    PathOps notAbsolute() {

        out.println("check path is not absolute");

        checkPath();

        check(path.isAbsolute(), false);

        return this;

    }

    PathOps resolve(String other, String expected) {

        out.format("test resolve %s\n", other);

        checkPath();

        check(path.resolve(other), expected);

        return this;

    }

    PathOps relativize(String other, String expected) {

        out.format("test relativize %s\n", other);

        checkPath();

        Path that = FileSystems.getDefault().getPath(other);

        check(path.relativize(that), expected);

        return this;

    }

    PathOps normalize(String expected) {

        out.println("check normalized path");

        checkPath();

        check(path.normalize(), expected);

        return this;

    }

    PathOps string(String expected) {

        out.println("check string representation");

        checkPath();

        check(path, expected);

        return this;

    }

    PathOps invalid() {

        if (!(exc instanceof InvalidPathException)) {

            out.println("InvalidPathException not thrown as expected");

            fail();

        }

        return this;

    }

    static PathOps test(String s) {

        return new PathOps(s);

    }

    // -- PathOpss --

    static void header(String s) {

        out.println();

        out.println();

        out.println("-- " + s + " --");

    }

    static void doWindowsTests() {

        header("Windows specific tests");

        // all components present

        test("C:\\a\\b\\c")

            .root("C:\\")

            .parent("C:\\a\\b")

            .name("c");

        test("C:a\\b\\c")

            .root("C:")

            .parent("C:a\\b")

            .name("c");

        test("\\\\server\\share\\a")

            .root("\\\\server\\share\\")

            .parent("\\\\server\\share\\")

            .name("a");

        // root component only

        test("C:\\")

            .root("C:\\")

            .parent(null)

            .name(null);

        test("C:")

            .root("C:")

            .parent(null)

            .name(null);

        test("\\\\server\\share\\")

            .root("\\\\server\\share\\")

            .parent(null)

            .name(null);

        // no root component

        test("a\\b")

            .root(null)

            .parent("a")

            .name("b");

        // name component only

        test("foo")

            .root(null)

            .parent(null)

            .name("foo");

        // startsWith

        test("C:\\")

            .starts("C:\\")

            .starts("c:\\")

            .notStarts("C")

            .notStarts("C:");

        test("C:")

            .starts("C:")

            .starts("c:")

            .notStarts("C");

        test("\\")

            .starts("\\");

        test("C:\\foo\\bar")

            .starts("C:\\")

            .starts("C:\\foo")

            .starts("C:\\FOO")

            .starts("C:\\foo\\bar")

            .starts("C:\\Foo\\Bar")

            .notStarts("C:")

            .notStarts("C")

            .notStarts("C:foo");

        test("\\foo\\bar")

            .starts("\\")

            .starts("\\foo")

            .starts("\\foO")

            .starts("\\foo\\bar")

            .starts("\\fOo\\BaR")

            .notStarts("foo")

            .notStarts("foo\\bar");

        test("foo\\bar")

            .starts("foo")

            .starts("foo\\bar")

            .notStarts("\\");

        test("\\\\server\\share")

            .starts("\\\\server\\share")

            .starts("\\\\server\\share\\")

            .notStarts("\\");

        // endsWith

        test("C:\\")

            .ends("C:\\")

            .ends("c:\\")

            .notEnds("\\");

        test("C:")

            .ends("C:")

            .ends("c:");

        test("\\")

            .ends("\\");

        test("C:\\foo\\bar")

            .ends("bar")

            .ends("BAR")

            .ends("foo\\bar")

            .ends("Foo\\Bar")

            .ends("C:\\foo\\bar")

            .ends("c:\\foO\\baR")

            .notEnds("r")

            .notEnds("\\foo\\bar");

        test("\\foo\\bar")

            .ends("bar")

            .ends("BaR")

            .ends("foo\\bar")

            .ends("foO\\baR")

            .ends("\\foo\\bar")

            .ends("\\Foo\\Bar")

            .notEnds("oo\\bar");

        test("foo\\bar")

            .ends("bar")

            .ends("BAR")

            .ends("foo\\bar")

            .ends("Foo\\Bar")

            .notEnds("ar");

        test("\\\\server\\share")

            .ends("\\\\server\\share")

            .ends("\\\\server\\share\\")

            .notEnds("shared")

            .notEnds("\\");

        // elements

        test("C:\\a\\b\\c")

            .element(0, "a")

            .element(1, "b")

            .element(2, "c");

        test("foo.bar\\gus.alice")

            .element(0, "foo.bar")

            .element(1, "gus.alice");

        // subpath

        test("C:\\foo")

            .subpath(0, 1, "foo");

        test("C:foo")

            .subpath(0, 1, "foo");

        test("foo")

            .subpath(0, 1, "foo");

        test("C:\\foo\\bar\\gus")

            .subpath(0, 1, "foo")

            .subpath(0, 2, "foo\\bar")

            .subpath(0, 3, "foo\\bar\\gus")

            .subpath(1, 2, "bar")

            .subpath(1, 3, "bar\\gus")

            .subpath(2, 3, "gus");

        test("\\\\server\\share\\foo")

            .subpath(0, 1, "foo");

        // isAbsolute

        test("foo").notAbsolute();

        test("C:").notAbsolute();

        test("C:\\").absolute();

        test("C:\\abc").absolute();

        test("\\\\server\\share\\").absolute();

        // resolve

        test("C:\\")

            .resolve("foo", "C:\\foo")

            .resolve("D:\\bar", "D:\\bar")

            .resolve("\\\\server\\share\\bar", "\\\\server\\share\\bar")

            .resolve("C:foo", "C:\\foo")

            .resolve("D:foo", "D:foo");

        test("\\")

            .resolve("foo", "\\foo")

            .resolve("D:bar", "D:bar")

            .resolve("C:\\bar", "C:\\bar")

            .resolve("\\\\server\\share\\bar", "\\\\server\\share\\bar")

            .resolve("\\foo", "\\foo");

        test("\\foo")

            .resolve("bar", "\\foo\\bar")

            .resolve("D:bar", "D:bar")

            .resolve("C:\\bar", "C:\\bar")

            .resolve("\\\\server\\share\\bar", "\\\\server\\share\\bar")

            .resolve("\\bar", "\\bar");

        test("foo")

            .resolve("bar", "foo\\bar")

            .resolve("D:\\bar", "D:\\bar")

            .resolve("\\\\server\\share\\bar", "\\\\server\\share\\bar")

            .resolve("C:bar", "C:bar")

            .resolve("D:foo", "D:foo");

        test("C:")

            .resolve("foo", "C:foo");

        test("\\\\server\\share\\foo")

            .resolve("bar", "\\\\server\\share\\foo\\bar")

            .resolve("\\bar", "\\\\server\\share\\bar")

            .resolve("D:\\bar", "D:\\bar")

            .resolve("\\\\other\\share\\bar", "\\\\other\\share\\bar")

            .resolve("D:bar", "D:bar");

        // relativize

        test("foo\\bar")

            .relativize("foo\\bar", null)

            .relativize("foo", "..");

        test("C:\\a\\b\\c")

            .relativize("C:\\a", "..\\..");

        test("\\\\server\\share\\foo")

            .relativize("\\\\server\\share\\bar", "..\\bar");

        // normalize

        test("C:\\")

            .normalize("C:\\");

        test("C:\\.")

            .normalize("C:\\");

        test("C:\\..")

            .normalize("C:\\");

        test("\\\\server\\share")

            .normalize("\\\\server\\share\\");

        test("\\\\server\\share\\.")

            .normalize("\\\\server\\share\\");

        test("\\\\server\\share\\..")

            .normalize("\\\\server\\share\\");

        test("C:")

            .normalize("C:");

        test("C:.")

            .normalize("C:");

        test("C:..")

            .normalize("C:..");

        test("\\")

            .normalize("\\");

        test("\\.")

            .normalize("\\");

        test("\\..")

            .normalize("\\");

        test("foo")

            .normalize("foo");

        test("foo\\.")

            .normalize("foo");

        test("foo\\..")

            .normalize(null);

        test("C:\\foo")

            .normalize("C:\\foo");

        test("C:\\foo\\.")

            .normalize("C:\\foo");

        test("C:\\.\\foo")

            .normalize("C:\\foo");

        test("C:\\foo\\..")

            .normalize("C:\\");

        test("C:\\..\\foo")

            .normalize("C:\\foo");

        test("\\\\server\\share\\foo")

            .normalize("\\\\server\\share\\foo");

        test("\\\\server\\share\\foo\\.")

            .normalize("\\\\server\\share\\foo");

        test("\\\\server\\share\\.\\foo")

            .normalize("\\\\server\\share\\foo");

        test("\\\\server\\share\\foo\\..")

            .normalize("\\\\server\\share\\");

        test("\\\\server\\share\\..\\foo")

            .normalize("\\\\server\\share\\foo");

        test("C:foo")

            .normalize("C:foo");

        test("C:foo\\.")

            .normalize("C:foo");

        test("C:.\\foo")

            .normalize("C:foo");

        test("C:foo\\..")

            .normalize("C:");

        test("C:..\\foo")

            .normalize("C:..\\foo");

        test("\\foo")

            .normalize("\\foo");

        test("\\foo\\.")

            .normalize("\\foo");

        test("\\.\\foo")

            .normalize("\\foo");

        test("\\foo\\..")

            .normalize("\\");

        test("\\..\\foo")

            .normalize("\\foo");

        test(".")

            .normalize(null);

        test("..")

            .normalize("..");

        test("\\..\\..")

            .normalize("\\");

        test("..\\..\\foo")

            .normalize("..\\..\\foo");

        test("foo\\bar\\..")

            .normalize("foo");

        test("foo\\bar\\.\\..")

            .normalize("foo");

        test("foo\\bar\\gus\\..\\..")

            .normalize("foo");

        test(".\\foo\\.\\bar\\.\\gus\\..\\.\\..")

            .normalize("foo");

        // UNC corner cases

        test("\\\\server\\share\\")

            .root("\\\\server\\share\\")

            .parent(null)

            .name(null);

        test("\\\\server")

            .invalid();

        test("\\\\server\\")

            .invalid();

        test("\\\\server\\share")

            .root("\\\\server\\share\\")

            .parent(null)

            .name(null);

        // invalid

        test(":\\foo")

            .invalid();

        test("C::")

            .invalid();

        test("C:\\?")           // invalid character

            .invalid();

        test("C:\\*")           // invalid character

            .invalid();

        test("C:\\abc\u0001\\foo")

            .invalid();

        test("C:\\\u0019\\foo")

            .invalid();

        test("\\\\server\u0019\\share")

            .invalid();

        test("\\\\server\\share\u0019")

            .invalid();

        test("foo\u0000\bar")