/*
 * 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/
 */

using System.Text;
using ZXing.Common;

namespace ZXing.OneD.RSS.Expanded.Decoders
{
    /// <summary>
    /// <author>Pablo Orduña, University of Deusto (pablo.orduna@deusto.es)</author>
    /// </summary>
    abstract class AI01weightDecoder : AI01decoder
    {
        internal AI01weightDecoder(BitArray information)
           : base(information)
        {
        }

        protected 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);
    }
}
