67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "ui/text/text_utilities.h"
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namespace Ui {
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namespace Text {
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namespace {
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TextWithEntities WithSingleEntity(
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const QString &text,
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EntityType type,
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const QString &data = QString()) {
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auto result = TextWithEntities{ text };
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result.entities.push_back({ type, 0, text.size(), data });
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return result;
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}
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} // namespace
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TextWithEntities Bold(const QString &text) {
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return WithSingleEntity(text, EntityType::Bold);
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}
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TextWithEntities Link(const QString &text, const QString &url) {
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return WithSingleEntity(text, EntityType::CustomUrl, url);
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}
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TextWithEntities RichLangValue(const QString &text) {
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static const auto kStart = QRegularExpression("(\\*\\*|__)");
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auto result = TextWithEntities();
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auto offset = 0;
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while (offset < text.size()) {
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const auto m = kStart.match(text, offset);
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if (!m.hasMatch()) {
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result.text.append(text.midRef(offset));
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break;
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}
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const auto position = m.capturedStart();
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const auto from = m.capturedEnd();
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const auto tag = m.capturedRef();
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const auto till = text.indexOf(tag, from + 1);
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if (till <= from) {
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offset = from;
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continue;
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}
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if (position > offset) {
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result.text.append(text.midRef(offset, position - offset));
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}
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const auto type = (tag == qstr("__"))
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? EntityType::Italic
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: EntityType::Bold;
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result.entities.push_back({ type, result.text.size(), till - from });
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result.text.append(text.midRef(from, till - from));
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offset = till + tag.size();
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}
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return result;
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}
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} // namespace Text
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} // namespace Ui
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