cpp/core/src/qrcode/decoder/DecodedBitStreamParser.h

   1 #ifndef __DECODED_BIT_STREAM_PARSER_H__
   2 #define __DECODED_BIT_STREAM_PARSER_H__
   3
   4 /*
   5  *  DecodedBitStreamParser.h
   6  *  zxing
   7  *
   8  *  Created by Christian Brunschen on 20/05/2008.
   9  *  Copyright 2008 ZXing authors All rights reserved.
  10  *
  11  * Licensed under the Apache License, Version 2.0 (the "License");
  12  * you may not use this file except in compliance with the License.
  13  * You may obtain a copy of the License at
  14  *
  15  *      http://www.apache.org/licenses/LICENSE-2.0
  16  *
  17  * Unless required by applicable law or agreed to in writing, software
  18  * distributed under the License is distributed on an "AS IS" BASIS,
  19  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20  * See the License for the specific language governing permissions and
  21  * limitations under the License.
  22  */
  23
  24 #include <string>
  25 #include <sstream>
  26 #include "Mode.h"
  27 #include "../../common/BitSource.h"
  28 #include "../../common/Counted.h"
  29 #include "../../common/Array.h"
  30
  31 #include <iconv.h>
  32
  33 namespace qrcode {
  34   namespace decoder {
  35
  36     using namespace common;
  37     using namespace std;
  38
  39     class DecodedBitStreamParser {
  40     private:
  41       static char ALPHANUMERIC_CHARS[];
  42
  43       static char *ASCII;
  44       static char *ISO88591;
  45       static char *UTF8;
  46       static char *SHIFT_JIS;
  47       static char *EUC_JP;
  48
  49       static void decodeKanjiSegment(Ref<BitSource> bits,
  50                                      ostringstream &result,
  51                                      int count);
  52       static void decodeByteSegment(Ref<BitSource> bits,
  53                                     ostringstream &result,
  54                                     int count);
  55       static void decodeAlphanumericSegment(Ref<BitSource> bits,
  56                                             ostringstream &result,
  57                                             int count);
  58       static void decodeNumericSegment(Ref<BitSource> bits,
  59                                        ostringstream &result,
  60                                        int count);
  61       static char *guessEncoding(unsigned char *bytes, int length);
  62       static void append(ostream &ost, unsigned char *bufIn,
  63                          size_t nIn, const char *src);
  64
  65     public:
  66       static string decode(ArrayRef<unsigned char> bytes, Version *version);
  67     };
  68
  69   }
  70 }
  71
  72 #endif // __DECODED_BIT_STREAM_PARSER_H__