GetFilePointer.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * 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).
 *
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 * 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
   @summary Test RiffReader getFilePointer method
   @modules java.desktop/com.sun.media.sound
*/

import java.io.File;
import java.io.FileInputStream;
import java.nio.file.Files;
import java.nio.file.Paths;

import com.sun.media.sound.RIFFReader;
import com.sun.media.sound.RIFFWriter;

public class GetFilePointer {

    private static void assertEquals(Object a, Object b) throws Exception
    {
        if(!a.equals(b))
            throw new RuntimeException("assertEquals fails!");
    }

    public static void main(String[] args) throws Exception {
        RIFFWriter writer = null;
        RIFFReader reader = null;
        File tempfile = File.createTempFile("test",".riff");
        try
        {
            writer = new RIFFWriter(tempfile, "TEST");
            RIFFWriter chunk = writer.writeChunk("TSCH");
            chunk.writeByte(10);
            writer.close();
            writer = null;
            FileInputStream fis = new FileInputStream(tempfile);
            reader = new RIFFReader(fis);
            RIFFReader readchunk = reader.nextChunk();
            long p = readchunk.getFilePointer();
            readchunk.readByte();
            assertEquals(p+1,readchunk.getFilePointer());
            fis.close();
            reader = null;
        }
        finally
        {
            if(writer != null)
                writer.close();
            if(reader != null)
                reader.close();
            Files.delete(Paths.get(tempfile.getAbsolutePath()));
        }
    }
}