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/*
* Copyright (C) 2013-2026 Jolla Ltd.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef MASTODONTEXTUTILS_H
#define MASTODONTEXTUTILS_H
#include <QtCore/QDateTime>
#include <QtCore/QRegularExpression>
#include <QtCore/QString>
namespace MastodonTextUtils {
inline QString decodeHtmlEntities(QString text)
{
text.replace(QStringLiteral("""), QStringLiteral("\""));
text.replace(QStringLiteral("'"), QStringLiteral("'"));
text.replace(QStringLiteral("<"), QStringLiteral("<"));
text.replace(QStringLiteral(">"), QStringLiteral(">"));
text.replace(QStringLiteral("&"), QStringLiteral("&"));
text.replace(QStringLiteral(" "), QStringLiteral(" "));
static const QRegularExpression decimalEntity(QStringLiteral("&#(\\d+);"));
QRegularExpressionMatch match;
int index = 0;
while ((index = text.indexOf(decimalEntity, index, &match)) != -1) {
bool ok = false;
const uint value = match.captured(1).toUInt(&ok, 10);
QString replacement;
if (ok && value > 0 && value <= 0x10FFFF) {
replacement = QString::fromUcs4(&value, 1);
}
text.replace(index, match.capturedLength(0), replacement);
index += replacement.size();
}
static const QRegularExpression hexEntity(QStringLiteral("&#x([0-9a-fA-F]+);"));
index = 0;
while ((index = text.indexOf(hexEntity, index, &match)) != -1) {
bool ok = false;
const uint value = match.captured(1).toUInt(&ok, 16);
QString replacement;
if (ok && value > 0 && value <= 0x10FFFF) {
replacement = QString::fromUcs4(&value, 1);
}
text.replace(index, match.capturedLength(0), replacement);
index += replacement.size();
}
return text;
}
inline QString sanitizeContent(const QString &content)
{
QString plain = content;
plain.replace(QRegularExpression(QStringLiteral("<\\s*br\\s*/?\\s*>"), QRegularExpression::CaseInsensitiveOption),
QStringLiteral("\n"));
plain.replace(QRegularExpression(QStringLiteral("<\\s*/\\s*p\\s*>"), QRegularExpression::CaseInsensitiveOption),
QStringLiteral("\n"));
plain.remove(QRegularExpression(QStringLiteral("<[^>]+>"), QRegularExpression::CaseInsensitiveOption));
return decodeHtmlEntities(plain).trimmed();
}
inline QDateTime parseTimestamp(const QString ×tampString)
{
QDateTime timestamp;
#if QT_VERSION >= QT_VERSION_CHECK(5, 8, 0)
timestamp = QDateTime::fromString(timestampString, Qt::ISODateWithMs);
if (timestamp.isValid()) {
return timestamp;
}
#endif
timestamp = QDateTime::fromString(timestampString, Qt::ISODate);
if (timestamp.isValid()) {
return timestamp;
}
// Qt 5.6 cannot parse ISO-8601 timestamps with fractional seconds.
const int timeSeparator = timestampString.indexOf(QLatin1Char('T'));
const int fractionSeparator = timestampString.indexOf(QLatin1Char('.'), timeSeparator + 1);
if (timeSeparator > -1 && fractionSeparator > -1) {
int timezoneSeparator = timestampString.indexOf(QLatin1Char('Z'), fractionSeparator + 1);
if (timezoneSeparator == -1) {
timezoneSeparator = timestampString.indexOf(QLatin1Char('+'), fractionSeparator + 1);
}
if (timezoneSeparator == -1) {
timezoneSeparator = timestampString.indexOf(QLatin1Char('-'), fractionSeparator + 1);
}
QString stripped = timestampString;
if (timezoneSeparator > -1) {
stripped.remove(fractionSeparator, timezoneSeparator - fractionSeparator);
} else {
stripped.truncate(fractionSeparator);
}
timestamp = QDateTime::fromString(stripped, Qt::ISODate);
}
return timestamp;
}
} // namespace MastodonTextUtils
#endif // MASTODONTEXTUTILS_H
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