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/*
* qtmaildir - a Qt6 mail client for notmuch-indexed Maildirs
* Copyright (C) 2026 Danilo M. <danix@danix.xyz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "calendarwriter.h"
#include <QFile>
#include <QFileInfo>
#include <QSaveFile>
namespace CalendarWriter {
Result replace(const QString &path, const std::optional<QByteArray> &expected,
const std::optional<QByteArray> &newText, QString *error)
{
QFile current(path);
const bool exists = current.exists();
if (expected.has_value() != exists)
return Result::Stale;
if (exists) {
if (!current.open(QIODevice::ReadOnly)) {
*error = current.errorString();
return Result::IoError;
}
if (current.readAll() != *expected)
return Result::Stale;
current.close();
}
if (!newText) {
if (!QFile::remove(path)) {
*error = QFile(path).errorString();
return Result::IoError;
}
return Result::Ok;
}
// QSaveFile is the platform's atomic write: a temporary in the same
// directory, renamed on commit(). Its temporary is named "<name>.XXXXXX",
// which does not end in .ics, so vdirsyncer never lists it.
QSaveFile file(path);
if (!file.open(QIODevice::WriteOnly) || file.write(*newText) != newText->size()
|| !file.commit()) {
*error = file.errorString();
return Result::IoError;
}
return Result::Ok;
}
} // namespace CalendarWriter
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