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/*
* Copyright (C) 2015-2024 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 <unicode/uchar.h>
#include <unicode/uscript.h>
#include <wtf/text/StringCommon.h>
namespace WTF {
inline bool isEmojiGroupCandidate(char32_t character)
{
#define SYMBOLS_AND_PICTOGRAPHS_EXTENDED_A 298
#if U_ICU_VERSION_MAJOR_NUM < 64
#define UBLOCK_SYMBOLS_AND_PICTOGRAPHS_EXTENDED_A SYMBOLS_AND_PICTOGRAPHS_EXTENDED_A
#else
static_assert(UBLOCK_SYMBOLS_AND_PICTOGRAPHS_EXTENDED_A == SYMBOLS_AND_PICTOGRAPHS_EXTENDED_A);
#endif
switch (static_cast<int>(ublock_getCode(character))) {
case UBLOCK_MISCELLANEOUS_SYMBOLS:
case UBLOCK_DINGBATS:
case UBLOCK_MISCELLANEOUS_SYMBOLS_AND_PICTOGRAPHS:
case UBLOCK_EMOTICONS:
case UBLOCK_TRANSPORT_AND_MAP_SYMBOLS:
case UBLOCK_SUPPLEMENTAL_SYMBOLS_AND_PICTOGRAPHS:
case UBLOCK_SYMBOLS_AND_PICTOGRAPHS_EXTENDED_A:
return true;
default:
return false;
}
}
inline bool isEmojiFitzpatrickModifier(char32_t character)
{
// U+1F3FB - EMOJI MODIFIER FITZPATRICK TYPE-1-2
// U+1F3FC - EMOJI MODIFIER FITZPATRICK TYPE-3
// U+1F3FD - EMOJI MODIFIER FITZPATRICK TYPE-4
// U+1F3FE - EMOJI MODIFIER FITZPATRICK TYPE-5
// U+1F3FF - EMOJI MODIFIER FITZPATRICK TYPE-6
return character >= 0x1F3FB && character <= 0x1F3FF;
}
inline bool isVariationSelector(char32_t character)
{
return character >= 0xFE00 && character <= 0xFE0F;
}
inline bool isEmojiKeycapBase(char32_t character)
{
return (character >= '0' && character <= '9') || character == '#' || character == '*';
}
inline bool isEmojiRegionalIndicator(char32_t character)
{
return character >= 0x1F1E6 && character <= 0x1F1FF;
}
inline bool isEmojiWithPresentationByDefault(char32_t character)
{
// No characters in Latin-1 include "Emoji_Presentation"
// https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt
if (isLatin1(character))
return false;
return u_hasBinaryProperty(character, UCHAR_EMOJI_PRESENTATION);
}
inline bool isEmojiModifierBase(char32_t character)
{
// No characters in Latin-1 include "Emoji_Modifier_Base"
// https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt
if (isLatin1(character))
return false;
return u_hasBinaryProperty(character, UCHAR_EMOJI_MODIFIER_BASE);
}
inline bool isDefaultIgnorableCodePoint(char32_t character)
{
return u_hasBinaryProperty(character, UCHAR_DEFAULT_IGNORABLE_CODE_POINT);
}
inline bool isControlCharacter(char32_t character)
{
return u_charType(character) == U_CONTROL_CHAR;
}
inline bool isPrivateUseAreaCharacter(char32_t character)
{
auto block = ublock_getCode(character);
return block == UBLOCK_PRIVATE_USE_AREA || block == UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_A || block == UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_B;
}
inline bool isPunctuation(char32_t character)
{
return U_GET_GC_MASK(character) & U_GC_P_MASK;
}
inline bool isOpeningPunctuation(uint32_t generalCategoryMask)
{
return generalCategoryMask & U_GC_PS_MASK;
}
inline bool isClosingPunctuation(uint32_t generalCategoryMask)
{
return generalCategoryMask & U_GC_PE_MASK;
}
inline bool isOfScriptType(char32_t codePoint, UScriptCode scriptType)
{
UErrorCode error = U_ZERO_ERROR;
UScriptCode script = uscript_getScript(codePoint, &error);
if (error != U_ZERO_ERROR) {
LOG_ERROR("got ICU error while trying to look at scripts: %d", error);
return false;
}
return script == scriptType;
}
inline UEastAsianWidth eastAsianWidth(char32_t character)
{
return static_cast<UEastAsianWidth>(u_getIntPropertyValue(character, UCHAR_EAST_ASIAN_WIDTH));
}
inline bool isEastAsianFullWidth(char32_t character)
{
return eastAsianWidth(character) == UEastAsianWidth::U_EA_FULLWIDTH;
}
inline bool isCJKSymbolOrPunctuation(char32_t character)
{
// CJK Symbols and Punctuation block (U+3000–U+303F)
return character >= 0x3000 && character <= 0x303F;
}
inline bool isFullwidthMiddleDotPunctuation(char32_t character)
{
// U+00B7 MIDDLE DOT
// U+2027 HYPHENATION POINT
// U+30FB KATAKANA MIDDLE DOT
return character == 0x00B7 || character == 0x2027 || character == 0x30FB;
}
inline bool isCombiningMark(char32_t character)
{
return 0x0300 <= character && character <= 0x036F;
}
} // namespace WTF
using WTF::isEmojiGroupCandidate;
using WTF::isEmojiFitzpatrickModifier;
using WTF::isVariationSelector;
using WTF::isEmojiKeycapBase;
using WTF::isEmojiRegionalIndicator;
using WTF::isEmojiWithPresentationByDefault;
using WTF::isEmojiModifierBase;
using WTF::isDefaultIgnorableCodePoint;
using WTF::isControlCharacter;
using WTF::isPrivateUseAreaCharacter;
using WTF::isPunctuation;
using WTF::isOpeningPunctuation;
using WTF::isClosingPunctuation;
using WTF::isOfScriptType;
using WTF::isEastAsianFullWidth;
using WTF::isCJKSymbolOrPunctuation;
using WTF::isFullwidthMiddleDotPunctuation;
using WTF::isCombiningMark;
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