mirror of
https://github.com/SerenityOS/serenity
synced 2024-07-21 10:05:32 +00:00
6e19ab2bbc
We have a new, improved string type coming up in AK (OOM aware, no null state), and while it's going to use UTF-8, the name UTF8String is a mouthful - so let's free up the String name by renaming the existing class. Making the old one have an annoying name will hopefully also help with quick adoption :^)
61 lines
1.5 KiB
C++
61 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Array.h>
|
|
#include <AK/Hex.h>
|
|
#include <AK/StringBuilder.h>
|
|
#include <AK/Types.h>
|
|
#include <AK/Vector.h>
|
|
|
|
namespace AK {
|
|
|
|
ErrorOr<ByteBuffer> decode_hex(StringView input)
|
|
{
|
|
if ((input.length() % 2) != 0)
|
|
return Error::from_string_literal("Hex string was not an even length");
|
|
|
|
auto output = TRY(ByteBuffer::create_zeroed(input.length() / 2));
|
|
|
|
for (size_t i = 0; i < input.length() / 2; ++i) {
|
|
auto const c1 = decode_hex_digit(input[i * 2]);
|
|
if (c1 >= 16)
|
|
return Error::from_string_literal("Hex string contains invalid digit");
|
|
|
|
auto const c2 = decode_hex_digit(input[i * 2 + 1]);
|
|
if (c2 >= 16)
|
|
return Error::from_string_literal("Hex string contains invalid digit");
|
|
|
|
output[i] = (c1 << 4) + c2;
|
|
}
|
|
|
|
return { move(output) };
|
|
}
|
|
|
|
#ifdef KERNEL
|
|
ErrorOr<NonnullOwnPtr<Kernel::KString>> encode_hex(const ReadonlyBytes input)
|
|
{
|
|
StringBuilder output(input.size() * 2);
|
|
|
|
for (auto ch : input)
|
|
TRY(output.try_appendff("{:02x}", ch));
|
|
|
|
return Kernel::KString::try_create(output.string_view());
|
|
}
|
|
#else
|
|
DeprecatedString encode_hex(const ReadonlyBytes input)
|
|
{
|
|
StringBuilder output(input.size() * 2);
|
|
|
|
for (auto ch : input)
|
|
output.appendff("{:02x}", ch);
|
|
|
|
return output.build();
|
|
}
|
|
#endif
|
|
|
|
}
|