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/*************************************************************************
** DLLoader.cpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2022 Martin Gieseking <martin.gieseking@uos.de> **
** **
** 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 3 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, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#include "DLLoader.hpp"
using namespace std;
/** Creates a new DLLoader object and tries to load the given dynamic/shared library.
* @param[in] dlname name of library to load */
DLLoader::DLLoader (const string &dlname) : _handle(nullptr) {
loadLibrary(dlname);
}
/** Releases the currently assigned dynamic/shared library and loads another one.
* @param[in] dlname name of library to load */
bool DLLoader::loadLibrary (const string &dlname) {
closeLibrary();
if (!dlname.empty()) {
#ifdef _WIN32
_handle = LoadLibrary(dlname.c_str());
#else
_handle = dlopen(dlname.c_str(), RTLD_LAZY);
#endif
}
return _handle != nullptr;
}
/** Releases the library currently assigned to the DLLoader object. */
void DLLoader::closeLibrary () {
if (_handle) {
#ifdef _WIN32
FreeLibrary(_handle);
#else
dlclose(_handle);
#endif
_handle = nullptr;
}
}
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