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38 lines
888 B
38 lines
888 B
/* |
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* Copyright 2016 Nu-book Inc. |
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* Copyright 2016 ZXing authors |
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*/ |
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// SPDX-License-Identifier: Apache-2.0 |
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#include "BitArray.h" |
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#include "ByteArray.h" |
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#include <cstddef> |
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#include <stdexcept> |
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namespace ZXing { |
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void |
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BitArray::bitwiseXOR(const BitArray& other) |
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{ |
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if (size() != other.size()) { |
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throw std::invalid_argument("BitArray::xor(): Sizes don't match"); |
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} |
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for (size_t i = 0; i < _bits.size(); i++) { |
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// The last int could be incomplete (i.e. not have 32 bits in |
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// it) but there is no problem since 0 XOR 0 == 0. |
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_bits[i] ^= other._bits[i]; |
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} |
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} |
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ByteArray BitArray::toBytes(int bitOffset, int numBytes) const |
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{ |
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ByteArray res(numBytes == -1 ? (size() - bitOffset + 7) / 8 : numBytes); |
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for (int i = 0; i < Size(res); i++) |
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for (int j = 0; j < 8; j++) |
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AppendBit(res[i], (numBytes != -1 || bitOffset < size()) ? get(bitOffset++) : false); |
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return res; |
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} |
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} // ZXing
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