valentina_old/src/libs/vmisc/appimage.cpp

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/************************************************************************
**
** @file appimage.cpp
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date 29 11, 2019
**
** @brief
** @copyright
** This source code is part of the Valentina project, a pattern making
** program, whose allow create and modeling patterns of clothing.
** Copyright (C) 2019 Valentina project
** <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
**
** Valentina 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 3 of the License, or
** (at your option) any later version.
**
** Valentina 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 Valentina. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
#include "appimage.h"
#include <stdlib.h>
#include <unicode/putil.h>
#include <QString>
#include <QCoreApplication>
#include <cstring>
#include <QVector>
extern "C" {
#include "binreloc.h"
}
#include "../vmisc/def.h"
#include "compatibility.h"
namespace
{
//---------------------------------------------------------------------------------------------------------------------
QStringList ReverseList(const QStringList &list)
{
if (list.isEmpty())
{
return list;
}
QVector<QString> reversedList(list.size());
qint32 j = 0;
for (qint32 i = list.size() - 1; i >= 0; --i)
{
reversedList.replace(j, list.at(i));
++j;
}
return ConvertToList(reversedList);
}
}
//---------------------------------------------------------------------------------------------------------------------
/* When deploying with AppImage based on OpenSuse, the ICU library has a hardcoded path to the icudt*.dat file.
* This prevents the library from using shared in memory data. There are few ways to resolve this issue. According
* to documentation we can either use ICU_DATA environment variable or the function u_setDataDirectory().
*/
char* IcuDataPath(const char* correction)
{
char * data_path = nullptr;
BrInitError error;
if (br_init (&error))
{
char *path = br_find_exe_dir(nullptr);
if (path)
{
data_path = static_cast<char *> (malloc(strlen(path) + strlen(correction) + 1));
if(data_path)
{
strcpy(data_path, path);
strcat(data_path, correction);
u_setDataDirectory(data_path);
}
free(path);
}
}
return data_path;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief AppImageRoot returns path to AppImage root folder. Because after mount path to /usr folder looks like
* /tmp/.mount_valentXwmbwE/usr, the root part must be extracted to fix all paths when application is in AppImage
* format.
*
* Function we return empty if expected path is not compatible with current application directory path.
* @return path to AppImage root folder
*/
QString AppImageRoot()
{
return AppImageRoot(QCoreApplication::applicationDirPath(), QString(BINDIR));
}
//---------------------------------------------------------------------------------------------------------------------
QString AppImageRoot(const QString &applicationDir, const QString &defaultAppDir)
{
QStringList appSub = SplitFilePaths(applicationDir);
QStringList defaultSub = SplitFilePaths(defaultAppDir);
if (appSub.isEmpty() || defaultSub.isEmpty() || appSub.size() <= defaultSub.size())
{
return QString();
}
appSub = ReverseList(appSub);
defaultSub = ReverseList(defaultSub);
for (int i = 0; i < defaultSub.size(); ++i)
{
if (defaultSub.at(i) != appSub.at(i))
{
return QString();
}
}
QStringList rootSub = appSub.mid(defaultSub.size());
rootSub = ReverseList(rootSub);
return '/' + rootSub.join('/');
}