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BAN: Implement GUID::to_string

This commit is contained in:
Bananymous 2024-08-14 13:20:13 +03:00
parent e000c7d818
commit fd018b32d0
1 changed files with 49 additions and 1 deletions
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50
BAN/include/BAN/GUID.h
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@ -1,7 +1,7 @@
#pragma once
#include <BAN/Optional.h>
#include <BAN/StringView.h>
#include <BAN/String.h>
#include <string.h>
@ -19,6 +19,54 @@ namespace BAN
{
return memcmp(this, &other, sizeof(GUID)) == 0;
}
BAN::ErrorOr<BAN::String> to_string() const
{
char buffer[37];
char* ptr = buffer;
const auto append_hex_nibble =
[&ptr](uint8_t nibble)
{
if (nibble < 10)
*ptr++ = '0' + nibble;
else
*ptr++ = 'A' + nibble - 10;
};
const auto append_hex_byte =
[&append_hex_nibble](uint8_t byte)
{
append_hex_nibble(byte >> 4);
append_hex_nibble(byte & 0xF);
};
append_hex_byte((component1 >> 24) & 0xFF);
append_hex_byte((component1 >> 16) & 0xFF);
append_hex_byte((component1 >> 8) & 0xFF);
append_hex_byte((component1 >> 0) & 0xFF);
*ptr++ = '-';
append_hex_byte((component2 >> 8) & 0xFF);
append_hex_byte((component2 >> 0) & 0xFF);
*ptr++ = '-';
append_hex_byte((component3 >> 8) & 0xFF);
append_hex_byte((component3 >> 0) & 0xFF);
*ptr++ = '-';
append_hex_byte(component45[0]);
append_hex_byte(component45[1]);
*ptr++ = '-';
append_hex_byte(component45[2]);
append_hex_byte(component45[3]);
append_hex_byte(component45[4]);
append_hex_byte(component45[5]);
append_hex_byte(component45[6]);
append_hex_byte(component45[7]);
*ptr = '\0';
BAN::String guid;
TRY(guid.append(buffer));
return BAN::move(guid);
}
};
static_assert(sizeof(GUID) == 16);