| /* |
| * QR Code generator library (C++) |
| * |
| * Copyright (c) 2016 Project Nayuki |
| * https://www.nayuki.io/page/qr-code-generator-library |
| * |
| * (MIT License) |
| * Permission is hereby granted, free of charge, to any person obtaining a copy of |
| * this software and associated documentation files (the "Software"), to deal in |
| * the Software without restriction, including without limitation the rights to |
| * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of |
| * the Software, and to permit persons to whom the Software is furnished to do so, |
| * subject to the following conditions: |
| * - The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * - The Software is provided "as is", without warranty of any kind, express or |
| * implied, including but not limited to the warranties of merchantability, |
| * fitness for a particular purpose and noninfringement. In no event shall the |
| * authors or copyright holders be liable for any claim, damages or other |
| * liability, whether in an action of contract, tort or otherwise, arising from, |
| * out of or in connection with the Software or the use or other dealings in the |
| * Software. |
| */ |
| |
| #include <stdint.h> |
| #include <stdlib.h> |
| |
| #include <qrcodegen/bitbuffer.h> |
| |
| namespace qrcodegen { |
| |
| BitBuffer::BitBuffer() : |
| data(), |
| bitLength(0), |
| valid(true) {} |
| |
| |
| int BitBuffer::getBitLength() const { |
| return bitLength; |
| } |
| |
| |
| std::vector<uint8_t> BitBuffer::getBytes() const { |
| return data; |
| } |
| |
| |
| void BitBuffer::appendBits(uint32_t val, int len) { |
| if (len < 0 || len > 32 || (len < 32 && (val >> len) != 0)) { |
| valid = false; |
| return; |
| } |
| size_t newBitLen = bitLength + len; |
| while (data.size() * 8 < newBitLen) |
| data.push_back(0); |
| for (int i = len - 1; i >= 0; i--, bitLength++) // Append bit by bit |
| data.at(bitLength >> 3) |= ((val >> i) & 1) << (7 - (bitLength & 7)); |
| } |
| |
| |
| void BitBuffer::appendData(const QrSegment &seg) { |
| size_t newBitLen = bitLength + seg.bitLength; |
| while (data.size() * 8 < newBitLen) |
| data.push_back(0); |
| for (int i = 0; i < seg.bitLength; i++, bitLength++) { // Append bit by bit |
| int bit = (seg.data.at(i >> 3) >> (7 - (i & 7))) & 1; |
| data.at(bitLength >> 3) |= bit << (7 - (bitLength & 7)); |
| } |
| } |
| |
| }; // namespace qrcodegen |