/*

 * Copyright (c) 2010, 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.

 */

import java.io.*;

import java.nio.charset.*;

import java.util.*;

public class Test {

    private static PrintStream out = System.err;

    private static final SortedMap available = Charset.availableCharsets();

    private static void fail(String csn, String msg) {

        throw new RuntimeException(csn + ": " + msg);

    }

    private static void testPositive(String csn) {

        if (!Charset.isSupported(csn))

            fail(csn, "Not supported");

        Charset cs = Charset.forName(csn);

        out.println(csn + " --> " + cs.getClass().getName());

        out.println("  " + cs.name() + " " + cs.aliases());

        if (!available.containsKey(cs.name()))

            fail(csn, "Not in available charsets: " + available.keySet());

        if (!((Charset)available.get(cs.name())).equals(cs))

            fail(csn, "Available charset != looked-up charset");

        if (csn.equalsIgnoreCase("FOO")) {

            if (!(cs instanceof FooCharset))

                fail(csn, "instanceof failed");

        }

    }

    private static void testNegative(String csn) {

        if (Charset.isSupported(csn))

            fail(csn, "Supported");

        if (available.containsKey(csn))

            fail(csn, "Available");

        try {

            Charset.forName(csn);

        } catch (UnsupportedCharsetException x) {

            out.println(csn + " not supported, as expected");

            return;

        }

        fail(csn, "Lookup succeeded");

    }

    public static void main(String [] args) {

        out.println("Default: "

                    + new InputStreamReader(System.in).getEncoding());

        out.print("Available:");

        for (Iterator i = available.keySet().iterator(); i.hasNext();)

            out.print(" " + (String)i.next());

        out.println();

        for (int i = 0; i < args.length; i++) {

            String a = args[i];

            boolean not = a.startsWith("!");

            String csn = (not ? a.substring(1) : a);

            if (not)

                testNegative(csn);

            else

                testPositive(csn);

        }

    }

}