linphone-desktop/src/utils/Utils.hpp
Ronan Abhamon 23939aaa2a feat(core): supports H264 download
Co-authored-by: Danmei Chen <danmei.chen@belledonne-communications.com>
2018-03-23 10:43:48 +01:00

100 lines
3.2 KiB
C++

/*
* utils.hpp
* Copyright (C) 2017-2018 Belledonne Communications, Grenoble, France
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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.
*
* Created on: February 2, 2017
* Author: Ronan Abhamon
*/
#ifndef UTILS_H_
#define UTILS_H_
#include <QObject>
#include <QString>
// =============================================================================
/*
* Define telling g++ that a 'break' statement has been deliberately omitted
* in switch block.
*/
#ifndef UTILS_NO_BREAK
#if defined(__GNUC__) && __GNUC__ >= 7
#define UTILS_NO_BREAK __attribute__((fallthrough))
#else
#define UTILS_NO_BREAK
#endif // if defined(__GNUC__) && __GNUC__ >= 7
#endif // ifndef UTILS_NO_BREAK
namespace Utils {
inline QString coreStringToAppString (const std::string &str) {
return QString::fromLocal8Bit(str.c_str(), int(str.size()));
}
inline std::string appStringToCoreString (const QString &str) {
return qPrintable(str);
}
// Reverse function of strstr.
char *rstrstr (const char *a, const char *b);
// Returns the same path given in parameter if `filePath` exists.
// Otherwise returns a safe path with a unique number before the extension.
QString getSafeFilePath (const QString &filePath, bool *soFarSoGood = nullptr);
// Connect once to a member function.
template<typename Func1, typename Func2>
static inline QMetaObject::Connection connectOnce (
typename QtPrivate::FunctionPointer<Func1>::Object *sender,
Func1 signal,
typename QtPrivate::FunctionPointer<Func2>::Object *receiver,
Func2 slot
) {
QMetaObject::Connection connection = QObject::connect(sender, signal, receiver, slot);
QMetaObject::Connection *deleter = new QMetaObject::Connection();
*deleter = QObject::connect(sender, signal, [connection, deleter] {
QObject::disconnect(connection);
QObject::disconnect(*deleter);
delete deleter;
});
return connection;
}
// Connect once to a function.
template<typename Func1, typename Func2>
static inline QMetaObject::Connection connectOnce (
typename QtPrivate::FunctionPointer<Func1>::Object *sender,
Func1 signal,
const QObject *receiver,
Func2 slot
) {
QMetaObject::Connection connection = QObject::connect(sender, signal, receiver, slot);
QMetaObject::Connection *deleter = new QMetaObject::Connection();
*deleter = QObject::connect(sender, signal, [connection, deleter] {
QObject::disconnect(connection);
QObject::disconnect(*deleter);
delete deleter;
});
return connection;
}
}
#endif // UTILS_H_