From 3c8cf5f5dbc90fecb77bb87555b99fe964d03025 Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Wed, 6 Mar 2024 17:35:19 +0300
Subject: [PATCH] Added storage of surrogate pairs count to every emoji.

---
 ui/emoji_config.cpp | 34 ++++++++++++++++++++++++++++++
 ui/emoji_config.h   | 50 ++++++++++++++++++++++++---------------------
 2 files changed, 61 insertions(+), 23 deletions(-)

diff --git a/ui/emoji_config.cpp b/ui/emoji_config.cpp
index 49f29e9..349d939 100644
--- a/ui/emoji_config.cpp
+++ b/ui/emoji_config.cpp
@@ -373,6 +373,24 @@ void ClearUniversalChecked() {
 	}
 }
 
+[[nodiscard]] uint8 EmojiSurrogatePairs(const QString &e) {
+	if (e.size() > 1) {
+		auto count = uint8(0);
+		const auto begin = e.data();
+		auto ch = begin;
+		for (const auto end = begin + e.size(); ch != end; ++ch) {
+			if ((ch + 1 < end)
+				&& ch->isHighSurrogate()
+				&& (ch + 1)->isLowSurrogate()) {
+				count++;
+			}
+		}
+		return count;
+	} else {
+		return 0;
+	}
+}
+
 } // namespace
 
 namespace internal {
@@ -627,6 +645,22 @@ int GetSizeTouchbar() {
 }
 #endif
 
+One::One(
+	const QString &id,
+	EmojiPtr original,
+	uint32 index,
+	bool hasPostfix,
+	bool colorizable,
+	const CreationTag &)
+: _id(id)
+, _original(original)
+, _index(index)
+, _hasPostfix(hasPostfix)
+, _colorizable(colorizable)
+, _surrogatePairs(EmojiSurrogatePairs(text())) {
+	Expects(!_colorizable || !colored());
+}
+
 int One::variantsCount() const {
 	return hasVariants() ? 5 : 0;
 }
diff --git a/ui/emoji_config.h b/ui/emoji_config.h
index 95dd23b..30fbc77 100644
--- a/ui/emoji_config.h
+++ b/ui/emoji_config.h
@@ -51,66 +51,70 @@ class One {
 
 public:
 	One(One &&other) = default;
-	One(const QString &id, EmojiPtr original, uint32 index, bool hasPostfix, bool colorizable, const CreationTag &)
-	: _id(id)
-	, _original(original)
-	, _index(index)
-	, _hasPostfix(hasPostfix)
-	, _colorizable(colorizable) {
-		Expects(!_colorizable || !colored());
-	}
+	One(
+		const QString &id,
+		EmojiPtr original,
+		uint32 index,
+		bool hasPostfix,
+		bool colorizable,
+		const CreationTag &);
 
-	QString id() const {
+	[[nodiscard]] QString id() const {
 		return _id;
 	}
-	QString text() const {
+	[[nodiscard]] QString text() const {
 		return hasPostfix() ? (_id + QChar(kPostfix)) : _id;
 	}
 
-	bool colored() const {
+	[[nodiscard]] bool colored() const {
 		return (_original != nullptr);
 	}
-	EmojiPtr original() const {
+	[[nodiscard]] EmojiPtr original() const {
 		return _original ? _original : this;
 	}
-	QString nonColoredId() const {
+	[[nodiscard]] QString nonColoredId() const {
 		return original()->id();
 	}
 
-	bool hasPostfix() const {
+	[[nodiscard]] bool hasPostfix() const {
 		return _hasPostfix;
 	}
 
-	bool hasVariants() const {
+	[[nodiscard]] bool hasVariants() const {
 		return _colorizable || colored();
 	}
-	int variantsCount() const;
-	int variantIndex(EmojiPtr variant) const;
-	EmojiPtr variant(int index) const;
+	[[nodiscard]] int variantsCount() const;
+	[[nodiscard]] int variantIndex(EmojiPtr variant) const;
+	[[nodiscard]] EmojiPtr variant(int index) const;
 
-	int index() const {
+	[[nodiscard]] int index() const {
 		return _index;
 	}
-	int sprite() const {
+	[[nodiscard]] int sprite() const {
 		return int(_index >> 9);
 	}
-	int row() const {
+	[[nodiscard]] int row() const {
 		return int((_index >> 5) & 0x0FU);
 	}
-	int column() const {
+	[[nodiscard]] int column() const {
 		return int(_index & 0x1FU);
 	}
 
-	QString toUrl() const {
+	[[nodiscard]] QString toUrl() const {
 		return "emoji://e." + QString::number(index());
 	}
 
+	[[nodiscard]] uint8 surrogatePairs() const {
+		return _surrogatePairs;
+	}
+
 private:
 	const QString _id;
 	const EmojiPtr _original = nullptr;
 	const uint32 _index = 0;
 	const bool _hasPostfix = false;
 	const bool _colorizable = false;
+	const uint8 _surrogatePairs;
 
 	friend void internal::Init();