56 lines
2 KiB
C++
56 lines
2 KiB
C++
/*
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* Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/DeprecatedFlyString.h>
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#include <LibJS/Runtime/TypedArray.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Encoding/TextDecoder.h>
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#include <LibWeb/WebIDL/AbstractOperations.h>
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namespace Web::Encoding {
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WebIDL::ExceptionOr<JS::NonnullGCPtr<TextDecoder>> TextDecoder::construct_impl(JS::Realm& realm, DeprecatedFlyString encoding)
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{
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auto decoder = TextCodec::decoder_for(encoding);
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if (!decoder.has_value())
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, DeprecatedString::formatted("Invalid encoding {}", encoding) };
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return MUST_OR_THROW_OOM(realm.heap().allocate<TextDecoder>(realm, realm, *decoder, move(encoding), false, false));
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}
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// https://encoding.spec.whatwg.org/#dom-textdecoder
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TextDecoder::TextDecoder(JS::Realm& realm, TextCodec::Decoder& decoder, DeprecatedFlyString encoding, bool fatal, bool ignore_bom)
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: PlatformObject(realm)
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, m_decoder(decoder)
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, m_encoding(move(encoding))
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, m_fatal(fatal)
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, m_ignore_bom(ignore_bom)
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{
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}
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TextDecoder::~TextDecoder() = default;
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JS::ThrowCompletionOr<void> TextDecoder::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::TextDecoderPrototype>(realm, "TextDecoder"));
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return {};
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}
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// https://encoding.spec.whatwg.org/#dom-textdecoder-decode
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WebIDL::ExceptionOr<DeprecatedString> TextDecoder::decode(JS::Handle<JS::Object> const& input) const
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{
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// FIXME: Implement the streaming stuff.
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auto data_buffer_or_error = WebIDL::get_buffer_source_copy(*input.cell());
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if (data_buffer_or_error.is_error())
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return WebIDL::OperationError::create(realm(), "Failed to copy bytes from ArrayBuffer");
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auto& data_buffer = data_buffer_or_error.value();
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return m_decoder.to_utf8({ data_buffer.data(), data_buffer.size() });
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}
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}
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