AI01weightDecoder.java

/*
 * Copyright (C) 2010 ZXing authors
 *
 * Licensed 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
 *
 *      http://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.
 */

/*
 * These authors would like to acknowledge the Spanish Ministry of Industry,
 * Tourism and Trade, for the support in the project TSI020301-2008-2
 * "PIRAmIDE: Personalizable Interactions with Resources on AmI-enabled
 * Mobile Dynamic Environments", led by Treelogic
 * ( http://www.treelogic.com/ ):
 *
 *   http://www.piramidepse.com/
 */

package com.google.zxing.oned.rss.expanded.decoders;

import com.google.zxing.common.BitArray;

/**
 * @author Pablo Orduña, University of Deusto (pablo.orduna@deusto.es)
 */
abstract class AI01weightDecoder extends AI01decoder {

  AI01weightDecoder(BitArray information) {
    super(information);
  }

  protected final void encodeCompressedWeight(StringBuilder buf, int currentPos, int weightSize) {
    int originalWeightNumeric = this.getGeneralDecoder().extractNumericValueFromBitArray(currentPos, weightSize);
    addWeightCode(buf, originalWeightNumeric);

    int weightNumeric = checkWeight(originalWeightNumeric);

    int currentDivisor = 100000;
    for(int i = 0; i < 5; ++i){
      if (weightNumeric / currentDivisor == 0) {
        buf.append('0');
      }
      currentDivisor /= 10;
    }
    buf.append(weightNumeric);
  }

  protected abstract void addWeightCode(StringBuilder buf, int weight);

  protected abstract int checkWeight(int weight);

}