plc4j/spi/src/main/java/org/apache/plc4x/java/spi/generation/WriteBufferByteBased.java - plc4x - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
  *
  *   https://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
  */
 package org.apache.plc4x.java.spi.generation;

 import com.github.jinahya.bit.io.BufferByteOutput;
 import org.apache.commons.lang3.ArrayUtils;
 import org.apache.plc4x.java.spi.generation.io.MyDefaultBitOutput;

 import java.io.IOException;
 import java.math.BigDecimal;
 import java.math.BigInteger;
 import java.nio.ByteBuffer;
 import java.nio.charset.Charset;

 import static org.apache.commons.lang3.ArrayUtils.subarray;

 public class WriteBufferByteBased implements WriteBuffer {

     private final ByteBuffer bb;
     private final MyDefaultBitOutput bo;
     private ByteOrder byteOrder;

     public WriteBufferByteBased(int size) {
         this(size, ByteOrder.BIG_ENDIAN);
     }

     public WriteBufferByteBased(int size, ByteOrder byteOrder) {
         bb = ByteBuffer.allocate(size);
         BufferByteOutput<?> bbo = new BufferByteOutput<>(bb);
         bo = new MyDefaultBitOutput(bbo);
         this.byteOrder = byteOrder;
     }

     public ByteOrder getByteOrder() {
         return byteOrder;
     }

     public void setByteOrder(ByteOrder byteOrder) {
         this.byteOrder = byteOrder;
     }

     public void setPos(int position) {
         bb.position(position);
     }

     /**
      * @deprecated use {@link WriteBufferByteBased#getBytes()}
      */
     @Deprecated
     public byte[] getData() {
         return getBytes();
     }

     public byte[] getBytes() {
         return ArrayUtils.subarray(bb.array(), 0, getPos());
     }

     @Override
     public int getPos() {
         return (int) bo.getPos();
     }

     @Override
     public void pushContext(String logicalName, WithWriterArgs... writerArgs) {
         // byte buffer need no context handling
     }

     @Override
     public void writeBit(String logicalName, boolean value, WithWriterArgs... writerArgs) throws SerializationException {
         try {
             bo.writeBoolean(value);
         } catch (IOException e) {
             throw new SerializationException("Error writing bit", e);
         }
     }

     @Override
     public void writeByte(String logicalName, byte value, WithWriterArgs... writerArgs) throws SerializationException {
         writeSignedByte(logicalName, 8, value, writerArgs);
     }

     @Override
     public void writeByteArray(String logicalName, byte[] bytes, WithWriterArgs... writerArgs) throws SerializationException {
         for (byte aByte : bytes) {
             writeSignedByte(logicalName, 8, aByte, writerArgs);
         }
     }

     @Override
     public void writeUnsignedByte(String logicalName, int bitLength, byte value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("unsigned byte must contain at least 1 bit");
         }
         if (bitLength > 8) {
             throw new SerializationException("unsigned byte can only contain max 8 bits");
         }
         try {
             bo.writeByte(true, bitLength, value);
         } catch (IOException e) {
             throw new SerializationException("Error writing unsigned byte", e);
         }
     }

     @Override
     public void writeUnsignedShort(String logicalName, int bitLength, short value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("unsigned short must contain at least 1 bit");
         }
         if (bitLength > 16) {
             throw new SerializationException("unsigned short can only contain max 16 bits");
         }
         try {
             bo.writeShort(true, bitLength, value);
         } catch (IOException e) {
             throw new SerializationException("Error writing unsigned short", e);
         }
     }

     @Override
     public void writeUnsignedInt(String logicalName, int bitLength, int value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("unsigned int must contain at least 1 bit");
         }
         if (bitLength > 32) {
             throw new SerializationException("unsigned int can only contain max 32 bits");
         }
         try {
             if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
                 value = Integer.reverseBytes(value) >> 16;
             }
             bo.writeInt(true, bitLength, value);
         } catch (IOException e) {
             throw new SerializationException("Error writing unsigned int", e);
         }
     }

     @Override
     public void writeUnsignedLong(String logicalName, int bitLength, long value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("unsigned long must contain at least 1 bit");
         }
         if (bitLength > 63) {
             throw new SerializationException("unsigned long can only contain max 63 bits");
         }
         try {
             if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
                 value = Long.reverseBytes(value) >> 32;
             }
             bo.writeLong(true, bitLength, value);
         } catch (IOException e) {
             throw new SerializationException("Error writing unsigned long", e);
         }
     }

     @Override
     public void writeUnsignedBigInteger(String logicalName, int bitLength, BigInteger value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("long must contain at least 1 bit");
         }
         if (value.compareTo(BigInteger.ZERO) < 0) {
             throw new SerializationException("value " + value + " is below 0");
         }
         int actualBitLength = value.bitLength();
         if (bitLength < actualBitLength) {
             throw new SerializationException("bit length" + actualBitLength + " exceeds supplied bit length " + bitLength);
         }
         byte[] bytes = value.toByteArray();
         int remainingBitLength = actualBitLength;
         try {
             if (byteOrder != ByteOrder.LITTLE_ENDIAN) {
                 // MSB in 0
                 for (int i = 0; i < bytes.length; i++) {
                     int bitsToWrite = Math.min(remainingBitLength, 8);
                     bo.writeByte(false, bitsToWrite, bytes[i]);
                     remainingBitLength -= bitsToWrite;
                 }
             } else {
                 // MSB in bytes.length
                 for (int i = bytes.length - 1; i >= 0; i--) {
                     int bitsToWrite = Math.min(remainingBitLength, 8);
                     bo.writeByte(false, bitsToWrite, bytes[i]);
                     remainingBitLength -= bitsToWrite;
                 }
             }
         } catch (IOException e) {
             throw new SerializationException("Error reading", e);
         }
     }

     @Override
     public void writeSignedByte(String logicalName, int bitLength, byte value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("byte must contain at least 1 bit");
         }
         if (bitLength > 8) {
             throw new SerializationException("byte can only contain max 8 bits");
         }
         try {
             bo.writeByte(false, bitLength, value);
         } catch (IOException e) {
             throw new SerializationException("Error writing signed byte", e);
         }
     }

     @Override
     public void writeShort(String logicalName, int bitLength, short value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("short must contain at least 1 bit");
         }
         if (bitLength > 16) {
             throw new SerializationException("short can only contain max 16 bits");
         }
         try {
             if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
                 value = Short.reverseBytes(value);
             }
             bo.writeShort(false, bitLength, value);
         } catch (IOException e) {
             throw new SerializationException("Error writing signed short", e);
         }
     }

     @Override
     public void writeInt(String logicalName, int bitLength, int value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("int must contain at least 1 bit");
         }
         if (bitLength > 32) {
             throw new SerializationException("int can only contain max 32 bits");
         }
         try {
             if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
                 value = Integer.reverseBytes(value);
             }
             bo.writeInt(false, bitLength, value);
         } catch (IOException e) {
             throw new SerializationException("Error writing signed int", e);
         }
     }

     @Override
     public void writeLong(String logicalName, int bitLength, long value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("long must contain at least 1 bit");
         }
         if (bitLength > 64) {
             throw new SerializationException("long can only contain max 64 bits");
         }
         try {
             if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
                 value = Long.reverseBytes(value);
             }
             bo.writeLong(false, bitLength, value);
         } catch (IOException e) {
             throw new SerializationException("Error writing signed long", e);
         }
     }

     @Override
     public void writeBigInteger(String logicalName, int bitLength, BigInteger value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength <= 0) {
             throw new SerializationException("long must contain at least 1 bit");
         }
         int actualBitLength = value.bitLength();
         boolean negative = value.compareTo(BigInteger.ZERO) < 0;
         int bitLengthIncludingPossibleSign = actualBitLength + (negative ? 1 : 0);
         if (bitLength < bitLengthIncludingPossibleSign) {
             throw new SerializationException("bit length including possible sign " + bitLengthIncludingPossibleSign + " exceeds supplied bit length " + bitLength);
         }
         byte[] bytes = value.toByteArray();
         int remainingBitLength = bitLengthIncludingPossibleSign;
         try {
             if (byteOrder != ByteOrder.LITTLE_ENDIAN) {
                 // MSB in 0
                 for (int i = 0; i < bytes.length; i++) {
                     int bitsToWrite = Math.min(remainingBitLength, 8);
                     bo.writeByte(false, bitsToWrite, bytes[i]);
                     remainingBitLength -= bitsToWrite;
                 }
             } else {
                 // MSB in bytes.length
                 for (int i = bytes.length - 1; i >= 0; i--) {
                     int bitsToWrite = Math.min(remainingBitLength, 8);
                     bo.writeByte(false, bitsToWrite, bytes[i]);
                     remainingBitLength -= bitsToWrite;
                 }
             }
         } catch (IOException e) {
             throw new SerializationException("Error reading", e);
         }
     }

     @Override
     public void writeFloat(String logicalName, int bitLength, float value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength != 32) {
             throw new UnsupportedOperationException("Error writing float: Exponent and/or Mantissa non standard size");
         }
         // TODO: This assumes the default encoding of IEEE 32 bit floating point
         writeInt(logicalName, bitLength, Float.floatToRawIntBits(value));
     }

     @Override
     public void writeDouble(String logicalName, int bitLength, double value, WithWriterArgs... writerArgs) throws SerializationException {
         if (bitLength != 64) {
             throw new UnsupportedOperationException("Error writing double: Exponent and/or Mantissa non standard size");
         }
         // TODO: This assumes the default encoding of IEEE 64 bit floating point
         writeLong(logicalName, bitLength, Double.doubleToRawLongBits(value));
     }

     @Override
     public void writeBigDecimal(String logicalName, int bitLength, BigDecimal value, WithWriterArgs... writerArgs) {
         throw new UnsupportedOperationException("not implemented yet");
     }

     @Override
     public void writeString(String logicalName, int bitLength, String encoding, String value, WithWriterArgs... writerArgs) throws SerializationException {
         final byte[] bytes = value.getBytes(Charset.forName(encoding.replaceAll("[^a-zA-Z0-9]", "")));
         int fixedByteLength = (int) Math.ceil((float) bitLength / 8.0);

         if (bitLength == 0) {
             fixedByteLength = bytes.length;
         }

         try {
             int offset = bytes.length - fixedByteLength;
             while (offset < 0) {
                 bo.writeByte(false, 8, (byte) 0x00);
                 offset++;
             }
             for (int i = offset; i < bytes.length; i++) {
                 bo.writeByte(false, 8, bytes[i]);
             }
         } catch (IOException e) {
             throw new SerializationException("Error writing string", e);
         }
     }

     @Override
     public void popContext(String logicalName, WithWriterArgs... writerArgs) {
         // byte buffer need no context handling
     }

 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you under the Apache License, Version 2.0 (the
	* "License"); you may not use this file except in compliance
	* with the License. You may obtain a copy of the License at
	*
	* https://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing,
	* software distributed under the License is distributed on an
	* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	* KIND, either express or implied. See the License for the
	* specific language governing permissions and limitations
	* under the License.
	*/
	package org.apache.plc4x.java.spi.generation;

	import com.github.jinahya.bit.io.BufferByteOutput;
	import org.apache.commons.lang3.ArrayUtils;
	import org.apache.plc4x.java.spi.generation.io.MyDefaultBitOutput;

	import java.io.IOException;
	import java.math.BigDecimal;
	import java.math.BigInteger;
	import java.nio.ByteBuffer;
	import java.nio.charset.Charset;

	import static org.apache.commons.lang3.ArrayUtils.subarray;

	public class WriteBufferByteBased implements WriteBuffer {

	private final ByteBuffer bb;
	private final MyDefaultBitOutput bo;
	private ByteOrder byteOrder;

	public WriteBufferByteBased(int size) {
	this(size, ByteOrder.BIG_ENDIAN);
	}

	public WriteBufferByteBased(int size, ByteOrder byteOrder) {
	bb = ByteBuffer.allocate(size);
	BufferByteOutput<?> bbo = new BufferByteOutput<>(bb);
	bo = new MyDefaultBitOutput(bbo);
	this.byteOrder = byteOrder;
	}

	public ByteOrder getByteOrder() {
	return byteOrder;
	}

	public void setByteOrder(ByteOrder byteOrder) {
	this.byteOrder = byteOrder;
	}

	public void setPos(int position) {
	bb.position(position);
	}

	/**
	* @deprecated use {@link WriteBufferByteBased#getBytes()}
	*/
	@Deprecated
	public byte[] getData() {
	return getBytes();
	}

	public byte[] getBytes() {
	return ArrayUtils.subarray(bb.array(), 0, getPos());
	}

	@Override
	public int getPos() {
	return (int) bo.getPos();
	}

	@Override
	public void pushContext(String logicalName, WithWriterArgs... writerArgs) {
	// byte buffer need no context handling
	}

	@Override
	public void writeBit(String logicalName, boolean value, WithWriterArgs... writerArgs) throws SerializationException {
	try {
	bo.writeBoolean(value);
	} catch (IOException e) {
	throw new SerializationException("Error writing bit", e);
	}
	}

	@Override
	public void writeByte(String logicalName, byte value, WithWriterArgs... writerArgs) throws SerializationException {
	writeSignedByte(logicalName, 8, value, writerArgs);
	}

	@Override
	public void writeByteArray(String logicalName, byte[] bytes, WithWriterArgs... writerArgs) throws SerializationException {
	for (byte aByte : bytes) {
	writeSignedByte(logicalName, 8, aByte, writerArgs);
	}
	}

	@Override
	public void writeUnsignedByte(String logicalName, int bitLength, byte value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("unsigned byte must contain at least 1 bit");
	}
	if (bitLength > 8) {
	throw new SerializationException("unsigned byte can only contain max 8 bits");
	}
	try {
	bo.writeByte(true, bitLength, value);
	} catch (IOException e) {
	throw new SerializationException("Error writing unsigned byte", e);
	}
	}

	@Override
	public void writeUnsignedShort(String logicalName, int bitLength, short value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("unsigned short must contain at least 1 bit");
	}
	if (bitLength > 16) {
	throw new SerializationException("unsigned short can only contain max 16 bits");
	}
	try {
	bo.writeShort(true, bitLength, value);
	} catch (IOException e) {
	throw new SerializationException("Error writing unsigned short", e);
	}
	}

	@Override
	public void writeUnsignedInt(String logicalName, int bitLength, int value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("unsigned int must contain at least 1 bit");
	}
	if (bitLength > 32) {
	throw new SerializationException("unsigned int can only contain max 32 bits");
	}
	try {
	if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
	value = Integer.reverseBytes(value) >> 16;
	}
	bo.writeInt(true, bitLength, value);
	} catch (IOException e) {
	throw new SerializationException("Error writing unsigned int", e);
	}
	}

	@Override
	public void writeUnsignedLong(String logicalName, int bitLength, long value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("unsigned long must contain at least 1 bit");
	}
	if (bitLength > 63) {
	throw new SerializationException("unsigned long can only contain max 63 bits");
	}
	try {
	if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
	value = Long.reverseBytes(value) >> 32;
	}
	bo.writeLong(true, bitLength, value);
	} catch (IOException e) {
	throw new SerializationException("Error writing unsigned long", e);
	}
	}

	@Override
	public void writeUnsignedBigInteger(String logicalName, int bitLength, BigInteger value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("long must contain at least 1 bit");
	}
	if (value.compareTo(BigInteger.ZERO) < 0) {
	throw new SerializationException("value " + value + " is below 0");
	}
	int actualBitLength = value.bitLength();
	if (bitLength < actualBitLength) {
	throw new SerializationException("bit length" + actualBitLength + " exceeds supplied bit length " + bitLength);
	}
	byte[] bytes = value.toByteArray();
	int remainingBitLength = actualBitLength;
	try {
	if (byteOrder != ByteOrder.LITTLE_ENDIAN) {
	// MSB in 0
	for (int i = 0; i < bytes.length; i++) {
	int bitsToWrite = Math.min(remainingBitLength, 8);
	bo.writeByte(false, bitsToWrite, bytes[i]);
	remainingBitLength -= bitsToWrite;
	}
	} else {
	// MSB in bytes.length
	for (int i = bytes.length - 1; i >= 0; i--) {
	int bitsToWrite = Math.min(remainingBitLength, 8);
	bo.writeByte(false, bitsToWrite, bytes[i]);
	remainingBitLength -= bitsToWrite;
	}
	}
	} catch (IOException e) {
	throw new SerializationException("Error reading", e);
	}
	}

	@Override
	public void writeSignedByte(String logicalName, int bitLength, byte value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("byte must contain at least 1 bit");
	}
	if (bitLength > 8) {
	throw new SerializationException("byte can only contain max 8 bits");
	}
	try {
	bo.writeByte(false, bitLength, value);
	} catch (IOException e) {
	throw new SerializationException("Error writing signed byte", e);
	}
	}

	@Override
	public void writeShort(String logicalName, int bitLength, short value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("short must contain at least 1 bit");
	}
	if (bitLength > 16) {
	throw new SerializationException("short can only contain max 16 bits");
	}
	try {
	if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
	value = Short.reverseBytes(value);
	}
	bo.writeShort(false, bitLength, value);
	} catch (IOException e) {
	throw new SerializationException("Error writing signed short", e);
	}
	}

	@Override
	public void writeInt(String logicalName, int bitLength, int value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("int must contain at least 1 bit");
	}
	if (bitLength > 32) {
	throw new SerializationException("int can only contain max 32 bits");
	}
	try {
	if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
	value = Integer.reverseBytes(value);
	}
	bo.writeInt(false, bitLength, value);
	} catch (IOException e) {
	throw new SerializationException("Error writing signed int", e);
	}
	}

	@Override
	public void writeLong(String logicalName, int bitLength, long value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("long must contain at least 1 bit");
	}
	if (bitLength > 64) {
	throw new SerializationException("long can only contain max 64 bits");
	}
	try {
	if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
	value = Long.reverseBytes(value);
	}
	bo.writeLong(false, bitLength, value);
	} catch (IOException e) {
	throw new SerializationException("Error writing signed long", e);
	}
	}

	@Override
	public void writeBigInteger(String logicalName, int bitLength, BigInteger value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength <= 0) {
	throw new SerializationException("long must contain at least 1 bit");
	}
	int actualBitLength = value.bitLength();
	boolean negative = value.compareTo(BigInteger.ZERO) < 0;
	int bitLengthIncludingPossibleSign = actualBitLength + (negative ? 1 : 0);
	if (bitLength < bitLengthIncludingPossibleSign) {
	throw new SerializationException("bit length including possible sign " + bitLengthIncludingPossibleSign + " exceeds supplied bit length " + bitLength);
	}
	byte[] bytes = value.toByteArray();
	int remainingBitLength = bitLengthIncludingPossibleSign;
	try {
	if (byteOrder != ByteOrder.LITTLE_ENDIAN) {
	// MSB in 0
	for (int i = 0; i < bytes.length; i++) {
	int bitsToWrite = Math.min(remainingBitLength, 8);
	bo.writeByte(false, bitsToWrite, bytes[i]);
	remainingBitLength -= bitsToWrite;
	}
	} else {
	// MSB in bytes.length
	for (int i = bytes.length - 1; i >= 0; i--) {
	int bitsToWrite = Math.min(remainingBitLength, 8);
	bo.writeByte(false, bitsToWrite, bytes[i]);
	remainingBitLength -= bitsToWrite;
	}
	}
	} catch (IOException e) {
	throw new SerializationException("Error reading", e);
	}
	}

	@Override
	public void writeFloat(String logicalName, int bitLength, float value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength != 32) {
	throw new UnsupportedOperationException("Error writing float: Exponent and/or Mantissa non standard size");
	}
	// TODO: This assumes the default encoding of IEEE 32 bit floating point
	writeInt(logicalName, bitLength, Float.floatToRawIntBits(value));
	}

	@Override
	public void writeDouble(String logicalName, int bitLength, double value, WithWriterArgs... writerArgs) throws SerializationException {
	if (bitLength != 64) {
	throw new UnsupportedOperationException("Error writing double: Exponent and/or Mantissa non standard size");
	}
	// TODO: This assumes the default encoding of IEEE 64 bit floating point
	writeLong(logicalName, bitLength, Double.doubleToRawLongBits(value));
	}

	@Override
	public void writeBigDecimal(String logicalName, int bitLength, BigDecimal value, WithWriterArgs... writerArgs) {
	throw new UnsupportedOperationException("not implemented yet");
	}

	@Override
	public void writeString(String logicalName, int bitLength, String encoding, String value, WithWriterArgs... writerArgs) throws SerializationException {
	final byte[] bytes = value.getBytes(Charset.forName(encoding.replaceAll("[^a-zA-Z0-9]", "")));
	int fixedByteLength = (int) Math.ceil((float) bitLength / 8.0);

	if (bitLength == 0) {
	fixedByteLength = bytes.length;
	}

	try {
	int offset = bytes.length - fixedByteLength;
	while (offset < 0) {
	bo.writeByte(false, 8, (byte) 0x00);
	offset++;
	}
	for (int i = offset; i < bytes.length; i++) {
	bo.writeByte(false, 8, bytes[i]);
	}
	} catch (IOException e) {
	throw new SerializationException("Error writing string", e);
	}
	}

	@Override
	public void popContext(String logicalName, WithWriterArgs... writerArgs) {
	// byte buffer need no context handling
	}

	}