FairMQ: Add plugin mechanism (Plugin and PluginManager classes)

fairmq/tools/Strings.h

@@ -0,0 +1,53 @@
+/********************************************************************************
+ *    Copyright (C) 2017 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
+ *                                                                              *
+ *              This software is distributed under the terms of the             *
+ *              GNU Lesser General Public Licence (LGPL) version 3,             *
+ *                  copied verbatim in the file "LICENSE"                       *
+ ********************************************************************************/
+
+#ifndef FAIR_MQ_TOOLS_STRINGS_H
+#define FAIR_MQ_TOOLS_STRINGS_H
+
+#include <initializer_list>
+#include <sstream>
+#include <string>
+#include <vector>
+
+namespace fair
+{
+namespace mq
+{
+namespace tools
+{
+
+/// @brief concatenates a variable number of args with the << operator via a stringstream
+/// @param t objects to be concatenated
+/// @return concatenated string
+template<typename ... T>
+auto ToString(T&&... t) -> std::string
+{
+    std::stringstream ss;
+    (void)std::initializer_list<int>{(ss << t, 0)...};
+    return ss.str();
+}
+
+/// @brief convert command line arguments from main function to vector of strings
+inline auto ToStrVector(const int argc, const char* argv[], const bool dropProgramName = true) -> std::vector<std::string>
+{
+    auto res = std::vector<std::string>{};
+    if (dropProgramName)
+    {
+        res.assign(argv + 1, argv + argc);
+    } else
+    {
+        res.assign(argv, argv + argc);
+    }
+    return res;
+}
+
+} /* namespace tools */
+} /* namespace mq */
+} /* namespace fair */
+
+#endif /* FAIR_MQ_TOOLS_STRINGS_H */