Atmosphere/libraries/libvapours/include/vapours/util/util_uuid.hpp

84 lines
3 KiB
C++

/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util/util_format_string.hpp>
namespace ams::util {
struct Uuid {
static constexpr size_t Size = 0x10;
static constexpr size_t StringSize = sizeof("XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX");
u8 data[Size];
friend bool operator==(const Uuid &lhs, const Uuid &rhs) {
return std::memcmp(lhs.data, rhs.data, Size) == 0;
}
friend bool operator!=(const Uuid &lhs, const Uuid &rhs) {
return !(lhs == rhs);
}
const char *ToString(char *dst, size_t dst_size) const {
util::SNPrintf(dst, dst_size, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
this->data[ 0], this->data[ 1], this->data[ 2], this->data[ 3], this->data[ 4], this->data[ 5], this->data[ 6], this->data[ 7],
this->data[ 8], this->data[ 9], this->data[10], this->data[11], this->data[12], this->data[13], this->data[14], this->data[15]);
return dst;
}
void FromString(const char *str) {
char buf[2 + 1] = {};
char *end;
s32 i = 0;
for (/* ... */; i < 4; ++i, str += 2) {
std::memcpy(buf, str, 2);
this->data[i] = static_cast<u8>(std::strtoul(buf, std::addressof(end), 16));
}
++str;
for (/* ... */; i < 6; ++i, str += 2) {
std::memcpy(buf, str, 2);
this->data[i] = static_cast<u8>(std::strtoul(buf, std::addressof(end), 16));
}
++str;
for (/* ... */; i < 8; ++i, str += 2) {
std::memcpy(buf, str, 2);
this->data[i] = static_cast<u8>(std::strtoul(buf, std::addressof(end), 16));
}
++str;
for (/* ... */; i < 10; ++i, str += 2) {
std::memcpy(buf, str, 2);
this->data[i] = static_cast<u8>(std::strtoul(buf, std::addressof(end), 16));
}
++str;
for (/* ... */; i < 16; ++i, str += 2) {
std::memcpy(buf, str, 2);
this->data[i] = static_cast<u8>(std::strtoul(buf, std::addressof(end), 16));
}
}
};
constexpr inline Uuid InvalidUuid = {};
}