cpp/core/src/zxing/oned/Code39Reader.h

   1 /*
   2  *  Code39Reader.h
   3  *  ZXing
   4  *
   5  *  Created by Lukasz Warchol on 10-01-26.
   6  *  Copyright 2010 ZXing authors All rights reserved.
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  */
  20
  21 #include <zxing/oned/OneDReader.h>
  22 #include <zxing/common/BitArray.h>
  23 #include <zxing/Result.h>
  24
  25 namespace zxing {
  26         namespace oned {
  27
  28                 /**
  29                  * <p>Decodes Code 39 barcodes. This does not support "Full ASCII Code 39" yet.</p>
  30                  * Ported form Java (author Sean Owen)
  31                  * @author Lukasz Warchol
  32                  */
  33                 class Code39Reader : public OneDReader {
  34
  35                 private:
  36                         std::string alphabet_string;
  37
  38                         bool usingCheckDigit;
  39                         bool extendedMode;
  40
  41                         static int* findAsteriskPattern(Ref<BitArray> row);                                                                                                             //throws ReaderException
  42                         static int toNarrowWidePattern(int counters[], int countersLen);
  43                         static char patternToChar(int pattern);                                                                                                                                 //throws ReaderException
  44                         static Ref<String> decodeExtended(std::string encoded);                                                                                                 //throws ReaderException
  45
  46                         void append(char* s, char c);
  47                 public:
  48                         Code39Reader();
  49                         Code39Reader(bool usingCheckDigit_);
  50
  51                         Ref<Result> decodeRow(int rowNumber, Ref<BitArray> row);
  52     };
  53         }
  54 }
  55