EAN8Reader.cpp Example File

 // -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
 /*
  *  Copyright 2010 ZXing authors All rights reserved.
  *
  * 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.
  */

 #include "EAN8Reader.h"
 #include <zxing/ReaderException.h>

 using std::vector;
 using zxing::oned::EAN8Reader;

 // VC++
 using zxing::Ref;
 using zxing::BitArray;

 EAN8Reader::EAN8Reader() : decodeMiddleCounters(4, 0) {}

 int EAN8Reader::decodeMiddle(Ref<BitArray> row,
                              Range const& startRange,
                              std::string& result){
   vector<int>& counters (decodeMiddleCounters);
   counters[0] = 0;
   counters[1] = 0;
   counters[2] = 0;
   counters[3] = 0;

   int end = row->getSize();
   int rowOffset = startRange[1];

   for (int x = 0; x < 4 && rowOffset < end; x++) {
     int bestMatch = decodeDigit(row, counters, rowOffset, L_PATTERNS);
     result.append(1, (byte) ('0' + bestMatch));
     for (int i = 0, end = counters.size(); i < end; i++) {
       rowOffset += counters[i];
     }
   }

   Range middleRange =
     findGuardPattern(row, rowOffset, true, MIDDLE_PATTERN);
   rowOffset = middleRange[1];
   for (int x = 0; x < 4 && rowOffset < end; x++) {
     int bestMatch = decodeDigit(row, counters, rowOffset, L_PATTERNS);
     result.append(1, (byte) ('0' + bestMatch));
     for (int i = 0, end = counters.size(); i < end; i++) {
       rowOffset += counters[i];
     }
   }
   return rowOffset;
 }

 zxing::BarcodeFormat EAN8Reader::getBarcodeFormat(){
   return BarcodeFormat::EAN_8;
 }