225 lines
7.4 KiB
C
225 lines
7.4 KiB
C
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2015 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include "gui/text.h"
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void emojiInit();
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EmojiPtr emojiGet(uint32 code);
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EmojiPtr emojiGet(uint32 code, uint32 code2);
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EmojiPtr emojiGet(EmojiPtr emoji, uint32 color);
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EmojiPtr emojiGet(const QChar *from, const QChar *end);
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QString emojiGetSequence(int index);
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inline QString emojiString(EmojiPtr emoji) {
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if ((emoji->code & 0xFFFF0000U) == 0xFFFF0000U) { // sequence
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return emojiGetSequence(emoji->code & 0xFFFFU);
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}
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QString result;
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result.reserve(emoji->len + (emoji->postfix ? 1 : 0));
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if (!(emoji->code >> 16)) {
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result.append(QChar(emoji->code & 0xFFFF));
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} else {
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result.append(QChar((emoji->code >> 16) & 0xFFFF));
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result.append(QChar(emoji->code & 0xFFFF));
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if (emoji->code2) {
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result.append(QChar((emoji->code2 >> 16) & 0xFFFF));
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result.append(QChar(emoji->code2 & 0xFFFF));
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}
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}
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if (emoji->color && ((emoji->color & 0xFFFF0000U) != 0xFFFF0000U)) {
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result.append(QChar((emoji->color >> 16) & 0xFFFF));
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result.append(QChar(emoji->color & 0xFFFF));
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}
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if (emoji->postfix) result.append(QChar(emoji->postfix));
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return result;
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}
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inline uint64 emojiKey(EmojiPtr emoji) {
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uint64 key = emoji->code;
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if (emoji->code2) {
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key = (key << 32) | uint64(emoji->code2);
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} else if (emoji->color && ((emoji->color & 0xFFFF0000U) != 0xFFFF0000U)) {
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key = (key << 32) | uint64(emoji->color);
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}
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return key;
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}
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inline EmojiPtr emojiFromKey(uint64 key) {
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uint32 code = uint32(key >> 32), code2 = uint32(key & 0xFFFFFFFFLLU);
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if (!code && code2) {
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code = code2;
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code2 = 0;
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}
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EmojiPtr emoji = emojiGet(code);
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if (emoji == TwoSymbolEmoji) {
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return emojiGet(code, code2);
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} else if (emoji && emoji->color && code2) {
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return emojiGet(emoji, code2);
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}
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return emoji;
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}
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inline EmojiPtr emojiFromUrl(const QString &url) {
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return emojiFromKey(url.midRef(10).toULongLong(0, 16)); // skip emoji://e.
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}
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inline EmojiPtr emojiFromText(const QChar *ch, const QChar *e, int &len) {
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EmojiPtr emoji = 0;
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if (ch + 1 < e && ((ch->isHighSurrogate() && (ch + 1)->isLowSurrogate()) || (((ch->unicode() >= 48 && ch->unicode() < 58) || ch->unicode() == 35) && (ch + 1)->unicode() == 0x20E3))) {
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uint32 code = (ch->unicode() << 16) | (ch + 1)->unicode();
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emoji = emojiGet(code);
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if (emoji) {
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if (emoji == TwoSymbolEmoji) { // check two symbol
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if (ch + 3 >= e) {
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emoji = 0;
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} else {
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uint32 code2 = ((uint32((ch + 2)->unicode()) << 16) | uint32((ch + 3)->unicode()));
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emoji = emojiGet(code, code2);
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}
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} else {
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if (ch + 2 < e && (ch + 2)->unicode() == 0x200D) { // check sequence
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EmojiPtr seq = emojiGet(ch, e);
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if (seq) {
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emoji = seq;
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}
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}
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}
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}
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} else if (ch < e) {
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emoji = emojiGet(ch->unicode());
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Q_ASSERT(emoji != TwoSymbolEmoji);
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}
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if (emoji) {
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len = emoji->len + ((ch + emoji->len < e && (ch + emoji->len)->unicode() == 0xFE0F) ? 1 : 0);
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if (emoji->color && (ch + len + 1 < e && (ch + len)->isHighSurrogate() && (ch + len + 1)->isLowSurrogate())) { // color
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uint32 color = ((uint32((ch + len)->unicode()) << 16) | uint32((ch + len + 1)->unicode()));
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EmojiPtr col = emojiGet(emoji, color);
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if (col && col != emoji) {
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len += col->len - emoji->len;
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emoji = col;
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if (ch + len < e && (ch + len)->unicode() == 0xFE0F) {
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++len;
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}
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}
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}
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}
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return emoji;
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}
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extern int EmojiSizes[5], EIndex, ESize;
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extern const char *EmojiNames[5], *EName;
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void emojiFind(const QChar *ch, const QChar *e, const QChar *&newEmojiEnd, uint32 &emojiCode);
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inline bool emojiEdge(const QChar *ch) {
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return true;
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switch (ch->unicode()) {
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case '.': case ',': case ':': case ';': case '!': case '?': case '#': case '@':
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case '(': case ')': case '[': case ']': case '{': case '}': case '<': case '>':
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case '+': case '=': case '-': case '_': case '*': case '/': case '\\': case '^': case '$':
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case '"': case '\'':
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case 8212: case 171: case 187: // --, <<, >>
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return true;
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}
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return false;
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}
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inline void appendPartToResult(QString &result, const QChar *start, const QChar *from, const QChar *to, EntitiesInText &entities) {
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if (to > from) {
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for (EntitiesInText::iterator i = entities.begin(), e = entities.end(); i != e; ++i) {
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if (i->offset >= to - start) break;
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if (i->offset + i->length < from - start) continue;
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if (i->offset >= from - start) {
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i->offset -= (from - start - result.size());
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i->length += (from - start - result.size());
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}
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if (i->offset + i->length < to - start) {
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i->length -= (from - start - result.size());
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}
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}
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result.append(from, to - from);
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}
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}
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inline QString replaceEmojis(const QString &text, EntitiesInText &entities) {
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QString result;
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int32 currentEntity = 0, entitiesCount = entities.size();
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const QChar *emojiStart = text.constData(), *emojiEnd = emojiStart, *e = text.constData() + text.size();
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bool canFindEmoji = true;
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for (const QChar *ch = emojiEnd; ch != e;) {
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uint32 emojiCode = 0;
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const QChar *newEmojiEnd = 0;
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if (canFindEmoji) {
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emojiFind(ch, e, newEmojiEnd, emojiCode);
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}
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while (currentEntity < entitiesCount && ch >= emojiStart + entities[currentEntity].offset + entities[currentEntity].length) {
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++currentEntity;
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}
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EmojiPtr emoji = emojiCode ? emojiGet(emojiCode) : 0;
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if (emoji && emoji != TwoSymbolEmoji &&
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(ch == emojiStart || !ch->isLetterOrNumber() || !(ch - 1)->isLetterOrNumber()) &&
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(newEmojiEnd == e || !newEmojiEnd->isLetterOrNumber() || newEmojiEnd == emojiStart || !(newEmojiEnd - 1)->isLetterOrNumber()) &&
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(currentEntity >= entitiesCount || (ch < emojiStart + entities[currentEntity].offset && newEmojiEnd <= emojiStart + entities[currentEntity].offset) || (ch >= emojiStart + entities[currentEntity].offset + entities[currentEntity].length && newEmojiEnd > emojiStart + entities[currentEntity].offset + entities[currentEntity].length))
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) {
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if (result.isEmpty()) result.reserve(text.size());
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appendPartToResult(result, emojiStart, emojiEnd, ch, entities);
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if (emoji->color) {
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EmojiColorVariants::const_iterator it = cEmojiVariants().constFind(emoji->code);
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if (it != cEmojiVariants().cend()) {
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EmojiPtr replace = emojiFromKey(it.value());
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if (replace) {
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if (replace != TwoSymbolEmoji && replace->code == emoji->code && replace->code2 == emoji->code2) {
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emoji = replace;
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}
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}
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}
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}
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result.append(emojiString(emoji));
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ch = emojiEnd = newEmojiEnd;
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canFindEmoji = true;
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} else {
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if (emojiEdge(ch)) {
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canFindEmoji = true;
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} else {
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canFindEmoji = false;
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}
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++ch;
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}
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}
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if (result.isEmpty()) return text;
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appendPartToResult(result, emojiStart, emojiEnd, e, entities);
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return result;
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}
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int emojiPackCount(DBIEmojiTab tab);
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EmojiPack emojiPack(DBIEmojiTab tab);
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