/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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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/* @test

   @bug 4867457

   @summary Check for correct byte buffer underflow handling in EUC-JP

 */

import java.io.*;

import java.nio.*;

import java.nio.charset.*;

public class EUCJPUnderflowDecodeTest {

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

        ByteBuffer bb = ByteBuffer.allocateDirect(255);

        CharBuffer cc = CharBuffer.allocate(255);

        // Test both regular EUC-JP and Linux variant

        String[] charsetNames = { "EUC_JP", "EUC-JP-LINUX" };

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

            Charset cs = Charset.forName(charsetNames[i]);

            CharsetDecoder decoder = cs.newDecoder();

            bb.clear();

            cc.clear();

            // Fakes a partial 3 byte EUC_JP (JIS-X-0212 range)

            // encoded character/byte sequence

            bb.put((byte)0x8f);

            bb.put((byte)0xa2);

            bb.flip();

            // Now decode with endOfInput method param set to

            // indicate to decoder that there is more encoded

            // data to follow in a subsequent invocation

            CoderResult result = decoder.decode(bb, cc, false);

            // java.nio.charset.CharsetDecoder spec specifies

            // that the coder ought to return CoderResult.UNDERFLOW

            // when insufficient bytes have been supplied to complete

            // the decoding operation

            if (result != CoderResult.UNDERFLOW) {

                throw new Exception("test failed - UNDERFLOW not returned");

            }

            // Repeat the test with the lead byte (minus its pursuing

            // trail byte) for the EUC-JP 2 byte (JIS208) range

            decoder.reset();

            bb.clear();

            cc.clear();

            bb.put((byte)0xa1);

            bb.flip();

            result = decoder.decode(bb, cc, false);

            if (result != CoderResult.UNDERFLOW) {

                throw new Exception("test failed");

            }

            // finally ensure that a valid JIS208 range EUC-JP

            // 2 byte value is correctly decoded when it is presented

            // at the trailing bounds of a ByteBuffer in the case where

            // charset decoder expects (endOfInput ==false) more

            //input to follow

            decoder.reset();

            bb.clear();

            cc.clear();

            bb.put((byte)0xa1);

            bb.put((byte)0xc0);

            bb.flip();

            result = decoder.decode(bb, cc, false);

            cc.flip();

            if (result != CoderResult.UNDERFLOW && cc.get() != '\uFF3c') {

                throw new Exception("test failed to decode EUC-JP (0xA1C0)");

            }

        }

    }

}