mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-26 22:51:12 +00:00
104 lines
3.7 KiB
C++
104 lines
3.7 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/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "os_utility.hpp"
|
|
|
|
namespace ams::os::impl {
|
|
|
|
namespace {
|
|
|
|
constexpr void ExpandUnsignedValueToAsciiImpl(char *dst, u64 value) {
|
|
/* Determine size needed. */
|
|
constexpr size_t SizeNeeded = (BITSIZEOF(value) / 4) * sizeof(char);
|
|
|
|
/* Write null-terminator. */
|
|
dst[SizeNeeded] = '\x00';
|
|
|
|
/* Write characters. */
|
|
for (size_t i = 0; i < SizeNeeded; ++i) {
|
|
/* Determine current character. */
|
|
const auto nybble = (value & 0xF);
|
|
const char cur_c = (nybble < 10) ? ('0' + nybble) : ('A' + nybble - 10);
|
|
|
|
/* Write current character. */
|
|
dst[SizeNeeded - 1 - i] = cur_c;
|
|
|
|
/* Shift to next nybble. */
|
|
value >>= 4;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
void ExpandUnsignedValueToAscii(char *dst, u64 value) {
|
|
return ExpandUnsignedValueToAsciiImpl(dst, value);
|
|
}
|
|
|
|
/* Test correctness. */
|
|
#if 0
|
|
namespace {
|
|
|
|
consteval bool TestExpandUnsignedValueToAsciiImpl(const char *expected, u64 value) {
|
|
/* Create buffer. */
|
|
char buffer[17] = {
|
|
'\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC', '\xCC'
|
|
};
|
|
|
|
/* Validate buffer is initially garbage. */
|
|
for (size_t i = 0; i < util::size(buffer); ++i) {
|
|
if (buffer[i] != '\xCC') {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Expand the value into the buffer. */
|
|
ExpandUnsignedValueToAsciiImpl(buffer, value);
|
|
|
|
/* Verify the result. */
|
|
for (size_t i = 0; i < util::size(buffer); ++i) {
|
|
if (buffer[i] != expected[i]) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Verify null-termination. */
|
|
if (buffer[util::size(buffer) - 1] != 0) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#define DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(v) static_assert(TestExpandUnsignedValueToAsciiImpl( #v , UINT64_C(0x##v)))
|
|
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(0000000000000000);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(FFFFFFFFFFFFFFFF);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(FFFFFFFF00000000);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(00000000FFFFFFFF);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(FFFF0000FFFF0000);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(0000FFFF0000FFFF);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(F0F0F0F0F0F0F0F0);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(0F0F0F0F0F0F0F0F);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(0123456789ABCDEF);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(FEDCBA9876543210);
|
|
DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL(A5A5A5A5A5A5A5A5);
|
|
|
|
#undef DO_TEST_EXPAND_UNSIGNED_VALUE_TO_ASCII_IMPL
|
|
|
|
}
|
|
#endif
|
|
|
|
}
|