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43 lines
1,003 B
C++
43 lines
1,003 B
C++
// Luanti
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// SPDX-License-Identifier: LGPL-2.1-or-later
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// Copyright (C) 2013 Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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#pragma once
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#include <string>
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#include <string_view>
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static const char hex_chars[] = "0123456789abcdef";
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[[nodiscard]]
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static inline std::string hex_encode(std::string_view data)
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{
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std::string ret;
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ret.reserve(data.size() * 2);
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for (unsigned char c : data) {
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ret.push_back(hex_chars[(c & 0xf0) >> 4]);
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ret.push_back(hex_chars[c & 0x0f]);
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}
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return ret;
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}
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[[nodiscard]]
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static inline std::string hex_encode(const char *data, size_t data_size)
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{
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if (!data_size)
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return "";
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return hex_encode(std::string_view(data, 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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