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/*
* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/FlyString.h>
#include <LibJS/Runtime/TypedArray.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Encoding/TextEncoder.h>
namespace Web::Encoding {
JS::NonnullGCPtr<TextEncoder> TextEncoder::construct_impl(JS::Realm& realm)
{
return *realm.heap().allocate<TextEncoder>(realm, realm);
}
TextEncoder::TextEncoder(JS::Realm& realm)
: PlatformObject(realm)
{
set_prototype(&Bindings::cached_web_prototype(realm, "TextEncoder"));
}
TextEncoder::~TextEncoder() = default;
// https://encoding.spec.whatwg.org/#dom-textencoder-encode
JS::Uint8Array* TextEncoder::encode(DeprecatedString const& input) const
{
// NOTE: The AK::DeprecatedString returned from PrimitiveString::string() is always UTF-8, regardless of the internal string type, so most of these steps are no-ops.
// 1. Convert input to an I/O queue of scalar values.
// 2. Let output be the I/O queue of bytes « end-of-queue ».
// 3. While true:
// 1. Let item be the result of reading from input.
// 2. Let result be the result of processing an item with item, an instance of the UTF-8 encoder, input, output, and "fatal".
// 3. Assert: result is not an error.
// 4. If result is finished, then convert output into a byte sequence and return a Uint8Array object wrapping an ArrayBuffer containing output.
auto byte_buffer = input.to_byte_buffer();
auto array_length = byte_buffer.size();
auto array_buffer = JS::ArrayBuffer::create(realm(), move(byte_buffer));
return JS::Uint8Array::create(realm(), array_length, *array_buffer);
}
// https://encoding.spec.whatwg.org/#dom-textencoder-encoding
FlyString const& TextEncoder::encoding()
{
static FlyString encoding = "utf-8"sv;
return encoding;
}
}
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