Elements  5.8
A C++ base framework for the Euclid Software.
Auxiliary.icpp
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1 /**
2  * @file ElementsKernel/_impl/Auxiliary.icpp
3  * @brief implementation of the templates declared in ElementsKernel/Auxiliary.h
4  * @date Feb 8, 2017
5  * @author Hubert Degaudenzi
6  *
7  * @copyright 2012-2020 Euclid Science Ground Segment
8  *
9  * This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General
10  * Public License as published by the Free Software Foundation; either version 3.0 of the License, or (at your option)
11  * any later version.
12  *
13  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
14  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
15  * details.
16  *
17  * You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to
18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef ELEMENTSKERNEL_ELEMENTSKERNEL__IMPL_AUXILIARY_ICPP_
22 #define ELEMENTSKERNEL_ELEMENTSKERNEL__IMPL_AUXILIARY_ICPP_
23 
24 #include <boost/filesystem.hpp> // for boost::filesystem
25 
26 #include "ElementsKernel/System.h" // for DEFAULT_INSTALL_PREFIX
27 #include "ElementsKernel/Exception.h" // for Exception
28 #include "ElementsKernel/Path.h" // for Path::VARIABLE, Path::Type
29  // for Path::getPathFromEnvVariable
30 namespace Elements {
31 
32 template <typename T>
33 boost::filesystem::path getAuxiliaryPath(const T& file_name, bool raise_exception) {
34 
35  auto location_list = getAuxiliaryLocations();
36 
37  auto result = Path::getPathFromLocations(file_name, location_list);
38 
39  if (result.empty() and raise_exception) {
40  throw Exception() << "The auxiliary path \"" << file_name << "\" cannot be found!";
41  }
42 
43  return result;
44 }
45 
46 } // namespace Elements
47 
48 #endif // ELEMENTSKERNEL_ELEMENTSKERNEL__IMPL_AUXILIARY_ICPP_