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AK: Use new simdutf option to add padding to Base64URL encodings

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This commit is contained in:
Timothy Flynn 2024-08-30 09:41:01 -04:00 • committed by Tim Flynn
commit 408532c910
Notes: github-actions[bot] 2024-08-31 05:48:18 +00:00
1 changed files with 3 additions and 11 deletions
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14
AK/Base64.cpp
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@ -33,22 +33,14 @@ static ErrorOr<ByteBuffer> decode_base64_impl(StringView input, simdutf::base64_
static ErrorOr<String> encode_base64_impl(StringView input, simdutf::base64_options options) static ErrorOr<String> encode_base64_impl(StringView input, simdutf::base64_options options)
{ {
Vector<u8> output; Vector<u8> output;
TRY(output.try_resize(simdutf::base64_length_from_binary(input.length(), options)));
// simdutf does not append padding to base64url encodings. We use the default encoding option here to allocate room simdutf::binary_to_base64(
// for the padding characters that we will later append ourselves if necessary.
TRY(output.try_resize(simdutf::base64_length_from_binary(input.length(), simdutf::base64_default)));
auto size_written = simdutf::binary_to_base64(
input.characters_without_null_termination(), input.characters_without_null_termination(),
input.length(), input.length(),
reinterpret_cast<char*>(output.data()), reinterpret_cast<char*>(output.data()),
options); options);
if (options == simdutf::base64_url) {
for (size_t i = size_written; i < output.size(); ++i)
output[i] = '=';
}
return String::from_utf8_without_validation(output); return String::from_utf8_without_validation(output);
} }
@ -69,7 +61,7 @@ ErrorOr<String> encode_base64(ReadonlyBytes input)
ErrorOr<String> encode_base64url(ReadonlyBytes input) ErrorOr<String> encode_base64url(ReadonlyBytes input)
{ {
return encode_base64_impl(input, simdutf::base64_url); return encode_base64_impl(input, simdutf::base64_url_with_padding);
} }
} }