zxing-js/library

import BitArray from '../../../../common/BitArray';
import StringBuilder from '../../../../util/StringBuilder';
import AI01decoder from './AI01decoder';

export default abstract class AI01weightDecoder extends AI01decoder {

  constructor(information: BitArray) {
    super(information);
  }

  encodeCompressedWeight(buf: StringBuilder, currentPos: number, weightSize: number): void {
    let originalWeightNumeric = this.getGeneralDecoder().extractNumericValueFromBitArray(currentPos, weightSize);
    this.addWeightCode(buf, originalWeightNumeric);

    let weightNumeric = this.checkWeight(originalWeightNumeric);

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

  protected abstract addWeightCode(buf: StringBuilder, weight: number): void;

  protected abstract checkWeight(weight: number): number;
}