BaseSimpleField.java

// <editor-fold defaultstate="collapsed" desc="license">
/*
 * Copyright (c) 2014, Karl H. Beckers
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * * Neither the name of the <ORGANIZATION> nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 **/
// </editor-fold>
package net.jarre_de_the.griffin.types.field;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.io.RandomAccessFile;
import java.util.List;
import net.jarre_de_the.griffin.Util;
import net.jarre_de_the.griffin.exception.ValueTooLargeException;
import net.jarre_de_the.griffin.file.Gff;
import net.jarre_de_the.griffin.types.data.AbstractFixedLengthData;
import net.jarre_de_the.griffin.types.data.DWordData;

/**
 *
 * @author charly4711
 */
public abstract class BaseSimpleField
        extends AbstractField<AbstractFixedLengthData> {
    /*
     *
     * constructors
     *
     */
    protected BaseSimpleField(FieldType t,
                              AbstractFixedLengthData d) {
        super(t, d);
    }

    protected BaseSimpleField(RandomAccessFile in,
                              Gff file,
                              Class<? extends AbstractFixedLengthData> dataClass) throws IOException {
        super(in, file, (Class<AbstractFixedLengthData>) dataClass);
    }

    /*
     *
     * read / write
     *
     */
    @Override
    public void persist(ByteArrayOutputStream structArray,
                        ByteArrayOutputStream fieldArray,
                        List<AbstractField.LabelWrapper> labelArrayList,
                        ByteArrayOutputStream fieldIndicesArray,
                        ByteArrayOutputStream listIndicesList,
                        ByteArrayOutputStream fieldData)
            throws IOException {
        // buffer for the field itself
        DWordData fBuf[] = persistTypeAndLabel(labelArrayList);
        // data pointer

        AbstractFixedLengthData d = (AbstractFixedLengthData) getValue();
        if (DWordData.class.equals(d.getClass())) {
            fBuf[2] = (DWordData) d;
        } else {
            if (d.length() > DWordData.LENGTH) {
                // this should not happen, because Fileds that have a higher
                // length or otherwise need special handling are supposed to
                // override persist()
                throw new ValueTooLargeException(DWordData.LENGTH, d.length());
            } else {
                fBuf[2] = new DWordData(Util.getUnsignedInt(d.getValue()));
            }
        }

        for (DWordData b : fBuf) {
            fieldArray.write(b.getValueAsByteArray());
        }
    }

    /*
     *
     * utility
     *
     */
    @Override
    public void printString(PrintStream out,
                            int align) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < align; i++) {
            sb.append(" ");
        }
        sb.append(this.toString());
        out.println(sb.toString());
    }
}