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/*
* Copyright (C) 2008-2023 Apple Inc. All Rights Reserved.
* Copyright (C) 2010 Google, 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 <array>
#include <span>
#include <unicode/umachine.h>
#include <wtf/Forward.h>
#include <wtf/text/LChar.h>
namespace WebCore {
class DecodedHTMLEntity;
class SegmentedString;
// This function expects a null character at the end, otherwise it assumes the source is partial.
DecodedHTMLEntity consumeHTMLEntity(SegmentedString&, UChar additionalAllowedCharacter = 0);
// This function assumes the source is complete, and does not expect a null character.
DecodedHTMLEntity consumeHTMLEntity(StringParsingBuffer<LChar>&);
DecodedHTMLEntity consumeHTMLEntity(StringParsingBuffer<UChar>&);
// This function does not check for "not enough characters" at all.
DecodedHTMLEntity decodeNamedHTMLEntityForXMLParser(const char*);
class DecodedHTMLEntity {
public:
constexpr DecodedHTMLEntity();
constexpr DecodedHTMLEntity(UChar);
constexpr DecodedHTMLEntity(UChar, UChar);
constexpr DecodedHTMLEntity(UChar, UChar, UChar);
enum ConstructNotEnoughCharactersType { ConstructNotEnoughCharacters };
constexpr DecodedHTMLEntity(ConstructNotEnoughCharactersType);
constexpr bool failed() const { return !m_length; }
constexpr bool notEnoughCharacters() const { return m_notEnoughCharacters; }
constexpr std::span<const UChar> span() const { return std::span { m_characters }.first(m_length); }
private:
uint8_t m_length { 0 };
bool m_notEnoughCharacters { false };
std::array<UChar, 3> m_characters;
};
} // namespace WebCore
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