Files
ANSLibs/QRCode/aztec/AZToken.cpp

45 lines
989 B
C++

/*
* Copyright 2016 Huy Cuong Nguyen
* Copyright 2016 ZXing authors
*/
// SPDX-License-Identifier: Apache-2.0
#include "AZToken.h"
#include "BitArray.h"
#include <algorithm>
namespace ZXing::Aztec {
void
Token::appendTo(BitArray& bitArray, const std::string& text) const
{
if (_count < 0) {
bitArray.appendBits(_value, -_count);
}
else {
for (int i = 0; i < _count; i++) {
if (i == 0 || (i == 31 && _count <= 62)) {
// We need a header before the first character, and before
// character 31 when the total byte code is <= 62
bitArray.appendBits(31, 5); // BINARY_SHIFT
if (_count > 62) {
bitArray.appendBits(_count - 31, 16);
}
else if (i == 0) {
// 1 <= binaryShiftByteCode <= 62
bitArray.appendBits(std::min((int)_count, 31), 5);
}
else {
// 32 <= binaryShiftCount <= 62 and i == 31
bitArray.appendBits(_count - 31, 5);
}
}
bitArray.appendBits(text[_value + i], 8);
}
}
}
} // namespace ZXing::Aztec