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Alpheus AFP Parser is a library and parser for the IBM Advanced Function Presentation (AFP) document/print stream format. Alpheus covers all AFP specifications: MO:DCA, BCOCA, CMOCA, FOCA, GOCA, IOCA, and PTOCA. It is a complete implementation. Every Structured Field, Repeating Group, and Triplet is fully implemented as Java class. Alpheus AFP Parser was written from scratch and has no external dependencies. Copyright 2015,2016 Rudolf Fiala Alpheus AFP Parser is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

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/*
Copyright 2015 Rudolf Fiala

This file is part of Alpheus AFP Parser.

Alpheus AFP Parser is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Alpheus AFP Parser 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 for more details.

You should have received a copy of the GNU General Public License
along with Alpheus AFP Parser.  If not, see 
*/
package com.mgz.afp.lineData;

import com.mgz.afp.base.StructuredField;
import com.mgz.afp.exceptions.AFPParserException;
import com.mgz.afp.parser.AFPParserConfiguration;
import com.mgz.util.UtilBinaryDecoding;

import java.io.IOException;
import java.io.OutputStream;

/**
 * Programming Guide and Line Data Reference (ha3l3r04.pdf), page 91
 
 The {@link
 * FDS_FixedDataSize} structured field specifies the number of bytes of text found in the following
 * {@link FDX_FixedDataText} structured fields.
 */
public class FDS_FixedDataSize extends StructuredField {
  int numberOfDataBytesInFollowingFDX;

  @Override
  public void decodeAFP(byte[] sfData, int offset, int length, AFPParserConfiguration config) throws AFPParserException {
    checkDataLength(sfData, offset, length, 2);
    numberOfDataBytesInFollowingFDX = UtilBinaryDecoding.parseInt(sfData, offset, 2);
  }

  @Override
  public void writeAFP(OutputStream os, AFPParserConfiguration config) throws IOException {
    writeFullStructuredField(os, UtilBinaryDecoding.intToByteArray(numberOfDataBytesInFollowingFDX, 2));
  }

  /**
   * Number of data bytes in following FDX structured fields
   *
   * @return number of data bytes in following FDX structured fields.
   */
  public int getNumberOfDataBytesInFollowingFDX() {
    return numberOfDataBytesInFollowingFDX;
  }

  /**
   * Sets the number of data bytes in following FDX structured fields.
   */
  public void setNumberOfDataBytesInFollowingFDX(
      int numberOfDataBytesInFollowingFDX) {
    this.numberOfDataBytesInFollowingFDX = numberOfDataBytesInFollowingFDX;
  }
}