ladybird/Userland/Libraries/LibWeb/Encoding/TextDecoder.cpp

/*
 * Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <AK/FlyString.h>
#include <LibJS/Runtime/TypedArray.h>
#include <LibWeb/Bindings/IDLAbstractOperations.h>
#include <LibWeb/Bindings/Wrapper.h>
#include <LibWeb/Encoding/TextDecoder.h>

namespace Web::Encoding {

// https://encoding.spec.whatwg.org/#dom-textdecoder-decode
DOM::ExceptionOr<String> TextDecoder::decode(JS::Handle<JS::Object> const& input) const
{
    // FIXME: Implement the streaming stuff.

    auto data_buffer_or_error = Bindings::IDL::get_buffer_source_copy(*input.cell());
    if (data_buffer_or_error.is_error())
        return DOM::OperationError::create("Failed to copy bytes from ArrayBuffer");
    auto& data_buffer = data_buffer_or_error.value();
    return m_decoder.to_utf8({ data_buffer.data(), data_buffer.size() });
}

}