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/*
* Copyright (C) 2004-2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "TextCodec.h"
#include <optional>
#include <wtf/TZoneMalloc.h>
namespace PAL {
class TextCodecUTF16 final : public TextCodec {
WTF_MAKE_TZONE_ALLOCATED(TextCodecUTF16);
public:
static void registerEncodingNames(EncodingNameRegistrar);
static void registerCodecs(TextCodecRegistrar);
explicit TextCodecUTF16(bool littleEndian);
private:
void stripByteOrderMark() final { m_shouldStripByteOrderMark = true; }
String decode(std::span<const uint8_t>, bool flush, bool stopOnError, bool& sawError) final;
Vector<uint8_t> encode(StringView, UnencodableHandling) const final;
bool m_littleEndian;
std::optional<uint8_t> m_leadByte;
std::optional<UChar> m_leadSurrogate;
bool m_shouldStripByteOrderMark { false };
};
} // namespace PAL
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