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e8f27160bf
Note that we can currently only use simdutf for Base64 decoding if the provided stopBeforePartial option is loose, which is the default. There is an open issue for simdutf to implement strict and stop-before-partial options. Until then, for those options, we implement a slow decoder that is written exactly as the spec steps dictate. See: https://github.com/simdutf/simdutf/issues/440
57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
/*
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* Copyright (c) 2024, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/ByteBuffer.h>
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#include <AK/Optional.h>
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#include <AK/StringView.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Heap/GCPtr.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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class Uint8ArrayConstructorHelpers {
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public:
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static void initialize(Realm&, Object& constructor);
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private:
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JS_DECLARE_NATIVE_FUNCTION(from_base64);
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};
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class Uint8ArrayPrototypeHelpers {
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public:
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static void initialize(Realm&, Object& prototype);
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private:
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JS_DECLARE_NATIVE_FUNCTION(to_base64);
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JS_DECLARE_NATIVE_FUNCTION(to_hex);
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};
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enum class Alphabet {
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Base64,
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Base64URL,
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};
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enum class LastChunkHandling {
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Loose,
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Strict,
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StopBeforePartial,
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};
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struct DecodeResult {
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size_t read { 0 }; // [[Read]]
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ByteBuffer bytes; // [[Bytes]]
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Optional<Completion> error; // [[Error]]
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};
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ThrowCompletionOr<NonnullGCPtr<TypedArrayBase>> validate_uint8_array(VM&);
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ThrowCompletionOr<ByteBuffer> get_uint8_array_bytes(VM&, TypedArrayBase const&);
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DecodeResult from_base64(VM&, StringView string, Alphabet alphabet, LastChunkHandling last_chunk_handling, Optional<size_t> max_length = {});
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}
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