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AK+LibUnicode: Provide Unicode-aware String case transformations

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Since AK can't refer to LibUnicode directly, the strategy here is that
if you need case transformations, you can link LibUnicode and receive
them. If you try to use either of these methods without linking it, then
you'll of course get a linker error (note we don't do any fallbacks to
e.g. ASCII case transformations). If you don't need these methods, you
don't have to link LibUnicode.
This commit is contained in:
Timothy Flynn 2023-01-08 16:33:30 -05:00 • committed by Andrew Kaster
parent 12f6793223
commit 6fcc1c7426
6 changed files with 77 additions and 0 deletions
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29
Userland/Libraries/LibUnicode/String.cpp Normal file
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/*
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/String.h>
#include <AK/StringBuilder.h>
#include <LibUnicode/UnicodeUtils.h>
// This file contains definitions of AK::String methods which require UCD data.
namespace AK {
ErrorOr<String> String::to_lowercase(Optional<StringView> const& locale) const
{
StringBuilder builder;
TRY(Unicode::Detail::build_lowercase_string(code_points(), builder, locale));
return builder.to_string();
}
ErrorOr<String> String::to_uppercase(Optional<StringView> const& locale) const
{
StringBuilder builder;
TRY(Unicode::Detail::build_uppercase_string(code_points(), builder, locale));
return builder.to_string();
}
}