mirror of
https://github.com/luanti-org/luanti.git
synced 2025-11-07 18:55:18 +01:00
47 lines
1.0 KiB
C++
47 lines
1.0 KiB
C++
// Luanti
|
|
// SPDX-License-Identifier: LGPL-2.1-or-later
|
|
// Copyright (C) 2013 Jonathan Neuschäfer <j.neuschaefer@gmx.net>
|
|
|
|
#pragma once
|
|
|
|
#include <string>
|
|
#include <string_view>
|
|
|
|
static const char hex_chars[] = "0123456789abcdef";
|
|
|
|
static inline std::string hex_encode(const char *data, unsigned int data_size)
|
|
{
|
|
std::string ret;
|
|
ret.reserve(data_size * 2);
|
|
|
|
char buf2[3];
|
|
buf2[2] = '\0';
|
|
|
|
for (unsigned int i = 0; i < data_size; i++) {
|
|
unsigned char c = (unsigned char)data[i];
|
|
buf2[0] = hex_chars[(c & 0xf0) >> 4];
|
|
buf2[1] = hex_chars[c & 0x0f];
|
|
ret.append(buf2);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline std::string hex_encode(std::string_view data)
|
|
{
|
|
return hex_encode(data.data(), data.size());
|
|
}
|
|
|
|
static inline bool hex_digit_decode(char hexdigit, unsigned char &value)
|
|
{
|
|
if (hexdigit >= '0' && hexdigit <= '9')
|
|
value = hexdigit - '0';
|
|
else if (hexdigit >= 'A' && hexdigit <= 'F')
|
|
value = hexdigit - 'A' + 10;
|
|
else if (hexdigit >= 'a' && hexdigit <= 'f')
|
|
value = hexdigit - 'a' + 10;
|
|
else
|
|
return false;
|
|
return true;
|
|
}
|