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Diffstat (limited to 'dviware/dvisvgm/src/CRC32.hpp')
| -rw-r--r-- | dviware/dvisvgm/src/CRC32.hpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/CRC32.hpp b/dviware/dvisvgm/src/CRC32.hpp new file mode 100644 index 0000000000..880f8b737e --- /dev/null +++ b/dviware/dvisvgm/src/CRC32.hpp @@ -0,0 +1,47 @@ +/************************************************************************* +** CRC32.hpp ** +** ** +** This file is part of dvisvgm -- a fast DVI to SVG converter ** +** Copyright (C) 2005-2019 Martin Gieseking <martin.gieseking@uos.de> ** +** ** +** 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 <http://www.gnu.org/licenses/>. ** +*************************************************************************/ + +#ifndef CRC32_HPP +#define CRC32_HPP + +#include <cstdlib> +#include <istream> + +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 |