69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
/************************************************************************
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* Minetest
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* Copyright (C) 2013 Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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*
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* hex.h
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* voxelands - 3d voxel world sandbox game
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* Copyright (C) Lisa 'darkrose' Milne 2014 <lisa@ltmnet.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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* License updated from GPLv2 or later to GPLv3 or later by Lisa Milne
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* for Voxelands.
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************************************************************************/
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#ifndef HEX_HEADER
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#define HEX_HEADER
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#include <string>
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static const char hex_chars[] = "0123456789abcdef";
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static inline std::string hex_encode(const char *data, unsigned int data_size)
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{
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std::string ret;
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char buf2[3];
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buf2[2] = '\0';
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for(unsigned int i = 0; i < data_size; i++)
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{
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unsigned char c = (unsigned char) data[i];
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buf2[0] = hex_chars[(c & 0xf0) >> 4];
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buf2[1] = hex_chars[c & 0x0f];
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ret.append(buf2);
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}
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return ret;
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}
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static inline std::string hex_encode(const std::string &data)
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{
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return hex_encode(data.c_str(), data.size());
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}
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static inline bool hex_digit_decode(char hexdigit, unsigned char &value)
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{
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if(hexdigit >= '0' && hexdigit <= '9')
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value = hexdigit - '0';
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else if(hexdigit >= 'A' && hexdigit <= 'F')
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value = hexdigit - 'A' + 10;
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else if(hexdigit >= 'a' && hexdigit <= 'f')
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value = hexdigit - 'a' + 10;
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else
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return false;
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return true;
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}
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#endif
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