File indexing completed on 2025-01-26 04:24:53
0001 /* 0002 Copyright (C) 2005-2014 Sergey A. Tachenov 0003 0004 This file is part of QuaZIP. 0005 0006 QuaZIP is free software: you can redistribute it and/or modify 0007 it under the terms of the GNU Lesser General Public License as published by 0008 the Free Software Foundation, either version 2.1 of the License, or 0009 (at your option) any later version. 0010 0011 QuaZIP is distributed in the hope that it will be useful, 0012 but WITHOUT ANY WARRANTY; without even the implied warranty of 0013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0014 GNU Lesser General Public License for more details. 0015 0016 You should have received a copy of the GNU Lesser General Public License 0017 along with QuaZIP. If not, see <http://www.gnu.org/licenses/>. 0018 0019 See COPYING file for the full LGPL text. 0020 0021 Original ZIP package is copyrighted by Gilles Vollant and contributors, 0022 see quazip/(un)zip.h files for details. Basically it's the zlib license. 0023 */ 0024 0025 #include "quacrc32.h" 0026 0027 #include "zlib.h" 0028 0029 QuaCrc32::QuaCrc32() 0030 { 0031 reset(); 0032 } 0033 0034 quint32 QuaCrc32::calculate(const QByteArray &data) 0035 { 0036 return crc32( crc32(0L, Z_NULL, 0), (const Bytef*)data.data(), data.size() ); 0037 } 0038 0039 void QuaCrc32::reset() 0040 { 0041 checksum = crc32(0L, Z_NULL, 0); 0042 } 0043 0044 void QuaCrc32::update(const QByteArray &buf) 0045 { 0046 checksum = crc32( checksum, (const Bytef*)buf.data(), buf.size() ); 0047 } 0048 0049 quint32 QuaCrc32::value() 0050 { 0051 return checksum; 0052 }