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/*
* 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/Intrinsics.h>
#include <LibWeb/Encoding/TextDecoder.h>
#include <LibWeb/WebIDL/AbstractOperations.h>
namespace Web::Encoding {
WebIDL::ExceptionOr<JS::NonnullGCPtr<TextDecoder>> TextDecoder::construct_impl(JS::Realm& realm, FlyString encoding)
{
auto decoder = TextCodec::decoder_for(encoding);
if (!decoder)
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, String::formatted("Invalid encoding {}", encoding) };
return JS::NonnullGCPtr(*realm.heap().allocate<TextDecoder>(realm, realm, *decoder, move(encoding), false, false));
}
// https://encoding.spec.whatwg.org/#dom-textdecoder
TextDecoder::TextDecoder(JS::Realm& realm, TextCodec::Decoder& decoder, FlyString encoding, bool fatal, bool ignore_bom)
: PlatformObject(realm)
, m_decoder(decoder)
, m_encoding(move(encoding))
, m_fatal(fatal)
, m_ignore_bom(ignore_bom)
{
set_prototype(&Bindings::cached_web_prototype(realm, "TextDecoder"));
}
TextDecoder::~TextDecoder() = default;
// https://encoding.spec.whatwg.org/#dom-textdecoder-decode
WebIDL::ExceptionOr<String> TextDecoder::decode(JS::Handle<JS::Object> const& input) const
{
// FIXME: Implement the streaming stuff.
auto data_buffer_or_error = WebIDL::get_buffer_source_copy(*input.cell());
if (data_buffer_or_error.is_error())
return WebIDL::OperationError::create(realm(), "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() });
}
}
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