/************************************************************************* ** CRC32.hpp ** ** ** ** This file is part of dvisvgm -- a fast DVI to SVG converter ** ** Copyright (C) 2005-2019 Martin Gieseking ** ** ** ** This program is free software; you can redistribute it and/or ** ** modify it under the terms of the GNU General Public License as ** ** published by the Free Software Foundation; either version 3 of ** ** the License, or (at your option) any later version. ** ** ** ** This program is distributed in the hope that it will be useful, but ** ** WITHOUT ANY WARRANTY; without even the implied warranty of ** ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ** ** GNU General Public License for more details. ** ** ** ** You should have received a copy of the GNU General Public License ** ** along with this program; if not, see . ** *************************************************************************/ #ifndef CRC32_HPP #define CRC32_HPP #include #include class CRC32 { public: CRC32 (); CRC32 (const CRC32 &crc32) =delete; void update (const uint8_t *bytes, size_t len); void update (uint32_t n, int bytes=4); void update (const char *str); void update (std::istream &is); uint32_t get () const; void reset (); static uint32_t compute (const uint8_t *bytes, size_t len); static uint32_t compute (const char *str); static uint32_t compute (std::istream &is); private: uint32_t _crc32; uint32_t _tab[256]; }; #endif