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/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/AllOf.h>
#include <AK/Hex.h>
#include <AK/StringBuilder.h>
#include <AK/UUID.h>
namespace AK {
UUID::UUID()
{
}
UUID::UUID(Array<u8, 16> uuid_buffer)
{
uuid_buffer.span().copy_to(m_uuid_buffer);
}
void UUID::convert_string_view_to_uuid(const StringView& uuid_string_view)
{
VERIFY(uuid_string_view.length() == 36);
auto first_unit = decode_hex(uuid_string_view.substring_view(0, 8));
auto second_unit = decode_hex(uuid_string_view.substring_view(9, 4));
auto third_unit = decode_hex(uuid_string_view.substring_view(14, 4));
auto fourth_unit = decode_hex(uuid_string_view.substring_view(19, 4));
auto fifth_unit = decode_hex(uuid_string_view.substring_view(24, 12));
VERIFY(first_unit.value().size() == 4 && second_unit.value().size() == 2
&& third_unit.value().size() == 2 && fourth_unit.value().size() == 2
&& fifth_unit.value().size() == 6);
m_uuid_buffer.span().overwrite(0, first_unit.value().data(), first_unit.value().size());
m_uuid_buffer.span().overwrite(4, second_unit.value().data(), second_unit.value().size());
m_uuid_buffer.span().overwrite(6, third_unit.value().data(), third_unit.value().size());
m_uuid_buffer.span().overwrite(8, fourth_unit.value().data(), fourth_unit.value().size());
m_uuid_buffer.span().overwrite(10, fifth_unit.value().data(), fifth_unit.value().size());
}
UUID::UUID(const StringView& uuid_string_view)
{
convert_string_view_to_uuid(uuid_string_view);
}
String UUID::to_string() const
{
StringBuilder builder(36);
builder.append(encode_hex(m_uuid_buffer.span().trim(4)).view());
builder.append('-');
builder.append(encode_hex(m_uuid_buffer.span().slice(4).trim(2)).view());
builder.append('-');
builder.append(encode_hex(m_uuid_buffer.span().slice(6).trim(2)).view());
builder.append('-');
builder.append(encode_hex(m_uuid_buffer.span().slice(8).trim(2)).view());
builder.append('-');
builder.append(encode_hex(m_uuid_buffer.span().slice(10).trim(6)).view());
return builder.to_string();
}
bool UUID::operator==(const UUID& other) const
{
for (size_t index = 0; index < 16; index++) {
if (m_uuid_buffer[index] != other.m_uuid_buffer[index])
return false;
}
return true;
}
bool UUID::is_zero() const
{
return all_of(m_uuid_buffer.begin(), m_uuid_buffer.end(), [](const auto octet) { return octet == 0; });
}
}
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