mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-29 02:50:26 +00:00
38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
/*
|
|
* Copyright (c) 2021, Max Wipfli <mail@maxwipfli.ch>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Forward.h>
|
|
|
|
namespace AK::UnicodeUtils {
|
|
|
|
template<typename Callback>
|
|
[[nodiscard]] constexpr int code_point_to_utf8(u32 code_point, Callback callback)
|
|
{
|
|
if (code_point <= 0x7f) {
|
|
callback((char)code_point);
|
|
return 1;
|
|
} else if (code_point <= 0x07ff) {
|
|
callback((char)(((code_point >> 6) & 0x1f) | 0xc0));
|
|
callback((char)(((code_point >> 0) & 0x3f) | 0x80));
|
|
return 2;
|
|
} else if (code_point <= 0xffff) {
|
|
callback((char)(((code_point >> 12) & 0x0f) | 0xe0));
|
|
callback((char)(((code_point >> 6) & 0x3f) | 0x80));
|
|
callback((char)(((code_point >> 0) & 0x3f) | 0x80));
|
|
return 3;
|
|
} else if (code_point <= 0x10ffff) {
|
|
callback((char)(((code_point >> 18) & 0x07) | 0xf0));
|
|
callback((char)(((code_point >> 12) & 0x3f) | 0x80));
|
|
callback((char)(((code_point >> 6) & 0x3f) | 0x80));
|
|
callback((char)(((code_point >> 0) & 0x3f) | 0x80));
|
|
return 4;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
}
|