calamares/src/libcalamares/modulesystem/InstanceKey.h
Adriaan de Groot 1cd9b93a22 REUSE: Giant boilerplate cleanup
- point to main Calamares site in the 'part of' headers instead
  of to github (this is the "this file is part of Calamares"
  opening line for most files).
- remove boilerplate from all source files, CMake modules and completions,
  this is the 3-paragraph summary of the GPL-3.0-or-later, which has
  a meaning entirely covered by the SPDX tag.
2020-08-26 02:28:38 +02:00

98 lines
2.5 KiB
C++

/* === This file is part of Calamares - <https://calamares.io> ===
*
* SPDX-FileCopyrightText: 2014-2015 Teo Mrnjavac <teo@kde.org>
* SPDX-FileCopyrightText: 2018-2019 Adriaan de Groot <groot@kde.org>
* SPDX-License-Identifier: GPL-3.0-or-later
*
* Calamares is Free Software: see the License-Identifier above.
*
*
*/
#ifndef MODULESYSTEM_INSTANCEKEY_H
#define MODULESYSTEM_INSTANCEKEY_H
#include <QDebug>
#include <QList>
#include <QPair>
#include <QString>
namespace Calamares
{
namespace ModuleSystem
{
/** @brief A module instance's key (`module@id`)
*
* A module instance is identified by both the module's name
* (a Calamares module, e.g. `users`) and an instance id.
* Usually, the instance id is the same as the module name
* and the whole module instance key is `users@users`, but
* it is possible to use the same module more than once
* and then you distinguish those module instances by their
* secondary id (e.g. `users@one`).
*
* This is supported by the *instances* configuration entry
* in `settings.conf`.
*/
class InstanceKey : public QPair< QString, QString >
{
public:
/// @brief Create an instance key from explicit module and id.
InstanceKey( const QString& module, const QString& id )
: QPair( module, id )
{
if ( second.isEmpty() )
{
second = first;
}
validate();
}
/// @brief Create unusual, invalid instance key
InstanceKey()
: QPair( QString(), QString() )
{
}
/// @brief A valid module has both name and id
bool isValid() const { return !first.isEmpty() && !second.isEmpty(); }
/// @brief A custom module has a non-default id
bool isCustom() const { return first != second; }
QString module() const { return first; }
QString id() const { return second; }
/// @brief Create instance key from stringified version
static InstanceKey fromString( const QString& s );
QString toString() const
{
if ( isValid() )
{
return first + '@' + second;
}
return QString();
}
private:
/** @brief Check validity and reset module and id if needed. */
void validate()
{
if ( first.contains( '@' ) || second.contains( '@' ) )
{
first = QString();
second = QString();
}
}
};
using InstanceKeyList = QList< InstanceKey >;
QDebug& operator<<( QDebug& s, const Calamares::ModuleSystem::InstanceKey& i );
} // namespace ModuleSystem
} // namespace Calamares
#endif