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This is the parser library for the PDS4 planetary data standard.
There is a newer version: 2.8.4
// Copyright 2019, California Institute of Technology ("Caltech").
// U.S. Government sponsorship acknowledged.
//
// 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 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 Caltech nor its operating division, the Jet Propulsion
// Laboratory, 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 OWNER 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.

package gov.nasa.pds.objectAccess.table;

import java.math.BigInteger;
import java.nio.ByteBuffer;

/**
 * Implements a field adapter for numeric fields stored in
 * textual format, as in a character table.
 */
public class NumericTextFieldAdapter extends DefaultFieldAdapter {

	@Override
	public byte getByte(byte[] buf, int offset, int length, int startBit, int stopBit) {
		int value = Integer.parseInt(getString(buf, offset, length, startBit, stopBit).trim());
		if (value < Byte.MIN_VALUE || value > Byte.MAX_VALUE) {
			throw new NumberFormatException("Value is out of range of a byte (" + value + ")");
		}

		return (byte) value;
	}

	@Override
	public short getShort(byte[] buf, int offset, int length, int startBit, int stopBit) {
		int value = Integer.parseInt(getString(buf, offset, length, startBit, stopBit).trim());
		if (value < Short.MIN_VALUE || value > Short.MAX_VALUE) {
			throw new NumberFormatException("Value is out of range of a short (" + value + ")");
		}

		return (short) value;
	}

	@Override
	public int getInt(byte[] buf, int offset, int length, int startBit, int stopBit) {
		return Integer.parseInt(getString(buf, offset, length, startBit, stopBit).trim());
	}

	@Override
	public long getLong(byte[] buf, int offset, int length, int startBit, int stopBit) {
		return Long.parseLong(getString(buf, offset, length, startBit, stopBit).trim());
	}

	@Override
	public float getFloat(byte[] buf, int offset, int length, int startBit, int stopBit) {
		return Float.parseFloat(getString(buf, offset, length, startBit, stopBit).trim());
	}

	@Override
	public double getDouble(byte[] buf, int offset, int length, int startBit, int stopBit) {
		return Double.parseDouble(getString(buf, offset, length, startBit, stopBit).trim());
	}

	@Override
	public BigInteger getBigInteger(byte[] buf, int offset, int length,
			int startBit, int stopBit) {
		return new BigInteger(getString(buf, offset, length, startBit, stopBit));
	}

	//
	// TODO: need to pass in charset to setString() in all setter?
	//

	@Override
	public void setByte(byte value, int offset, int length, ByteBuffer buffer, boolean isRightJustified) {
		setString(Byte.toString(value), offset, length, buffer, isRightJustified);
	}

	@Override
	public void setShort(short value, int offset, int length, ByteBuffer buffer, boolean isRightJustified) {
		setString(Short.toString(value), offset, length, buffer, isRightJustified);
	}

	@Override
	public void setInt(int value, int offset, int length, ByteBuffer buffer, boolean isRightJustified) {
		setString(Integer.toString(value), offset, length, buffer, isRightJustified);
	}

	@Override
	public void setLong(long value, int offset, int length, ByteBuffer buffer, boolean isRightJustified) {
		setString(Long.toString(value), offset, length, buffer, isRightJustified);
	}

	@Override
	public void setFloat(float value, int offset, int length, ByteBuffer buffer, boolean isRightJustified) {
		setString(Float.toString(value), offset, length, buffer, isRightJustified);
	}

	@Override
	public void setDouble(double value, int offset, int length, ByteBuffer buffer, boolean isRightJustified) {
		setString(Double.toString(value), offset, length, buffer, isRightJustified);
	}

	@Override
	public void setBigInteger(BigInteger value, int offset, int length,
			ByteBuffer buffer, boolean isRightJustified) {
		setString(value.toString(), offset, length, buffer, isRightJustified);
	}

}