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Add support for different configurations. Partially closes #465

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It may be useful to have different configurations either for portable
versions or for debugging purposes. To implement this we add two
options, avaliable via command line switches
1. An option to change configuration name ("--configuration"). The name
supplied via this option is appended to
QCoreApplication::applicationName() to form "qBittorrent_<conf_name>"
name for the configuration files.
2. An option to provide a path do directory where all the settings are
stored (kind of profile directory). There is a shortcut "--portable"
which means "use directory 'profile' near the executable location".

In order to implement that we have to perform initialisation of the
profile directories before the SettingStorage and Preferences singletones
are initialised. Thus, options parsing shall be performed without defaults
read from preferences.
This commit is contained in:
Eugene Shalygin 2016-05-03 21:45:06 +02:00
commit 0f746ffd5a
20 changed files with 901 additions and 398 deletions
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80
src/base/profile.h Normal file
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/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2016 Eugene Shalygin <eugene.shalygin@gmail.com>
* Copyright (C) 2012 Christophe Dumez
*
* 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.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
*/
#ifndef QBT_PROFILE_H
#define QBT_PROFILE_H
#include <memory>
#include <QString>
#include <QScopedPointer>
#include <QSettings>
class Application;
namespace Private
{
class Profile;
}
using SettingsPtr = std::unique_ptr<QSettings>;
enum class SpecialFolder
{
Cache,
Config,
Data,
Downloads
};
class Profile
{
public:
QString location(SpecialFolder folder) const;
SettingsPtr applicationSettings(const QString &name) const;
/// Returns either default name for configuration file (QCoreApplication::applicationName())
/// or the value, supplied via parameters
QString configurationName() const;
static const Profile &instance();
private:
Profile(Private::Profile *impl);
~Profile();
friend class ::Application;
static void initialize(const QString &rootProfilePath, const QString &configurationName);
void ensureDirectoryExists(SpecialFolder folder);
QScopedPointer<Private::Profile> m_impl;
static Profile *m_instance;
};
#endif // QBT_PROFILE_H