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/*
* Copyright (C) 2004-2020 Apple Inc. All rights reserved.
* Copyright (C) 2006 Alexey Proskuryakov <ap@nypop.com>
*
* 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 "UnencodableHandling.h"
#include <array>
#include <memory>
#include <span>
#include <unicode/umachine.h>
#include <wtf/Forward.h>
#include <wtf/Noncopyable.h>
#include <wtf/TZoneMalloc.h>
namespace PAL {
class TextEncoding;
using UnencodableReplacementArray = std::array<char, 32>;
class TextCodec {
WTF_MAKE_TZONE_ALLOCATED(TextCodec);
WTF_MAKE_NONCOPYABLE(TextCodec);
public:
TextCodec() = default;
virtual ~TextCodec() = default;
virtual void stripByteOrderMark() { }
virtual String decode(std::span<const uint8_t> data, bool flush, bool stopOnError, bool& sawError) = 0;
virtual Vector<uint8_t> encode(StringView, UnencodableHandling) const = 0;
// Fills a null-terminated string representation of the given
// unencodable character into the given replacement buffer.
// The length of the string (not including the null) will be returned.
static std::span<char> getUnencodableReplacement(char32_t, UnencodableHandling, UnencodableReplacementArray& replacement LIFETIME_BOUND);
};
Function<void(char32_t, Vector<uint8_t>&)> unencodableHandler(UnencodableHandling);
using EncodingNameRegistrar = void (*)(ASCIILiteral alias, ASCIILiteral name);
using NewTextCodecFunction = Function<std::unique_ptr<TextCodec>()>;
using TextCodecRegistrar = void (*)(ASCIILiteral name, NewTextCodecFunction&&);
} // namespace PAL
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