meta_info.cpp

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// Tell catch_ros about the package we are using it in
// Original Author: Max Schwarz <max.schwarz@uni-bonn.de>
// Rewritten using dlopen() by Timo Röhling <timo.roehling@fkie.fraunhofer.de>

#include <dlfcn.h>

namespace catch_ros
{
        namespace meta
        {
                const char* packageName()
                {
                        static const char* package_name = nullptr;
                        if (package_name == nullptr)
                        {
                                void* handle = dlopen(nullptr, RTLD_NOW);
                                if (handle)
                                {
                                        const char* const* package_name_ptr = reinterpret_cast<const char* const*>(dlsym(handle, "catch_ros_local_package_name"));
                                        if (package_name_ptr)
                                                package_name = *package_name_ptr;
                                        dlclose(handle);
                                }
                                if (package_name == nullptr)
                                        package_name = "UNKNOWN";
                        }
                        return package_name;
                }
        }
}