text: // Copyright (c) 2021-2021, The EVOLUTION Project
  // Copyright (c) 2017-2018, The Monero Project
  //
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without modification, are
  // permitted provided that the following conditions are met:
  //
  // 1. Redistributions of source code must retain the above copyright notice, this list of
  //    conditions and the following disclaimer.
  //
  // 2. Redistributions in binary form must reproduce the above copyright notice, this list
  //    of conditions and the following disclaimer in the documentation and/or other
  //    materials provided with the distribution.
  //
  // 3. Neither the name of the copyright holder nor the names of its contributors may be
  //    used to endorse or promote products derived from this software without specific
  //    prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  
  #include "device.hpp"
  #include "device_default.hpp"
  #ifdef WITH_DEVICE_LEDGER
  #include "device_ledger.hpp"
  #endif
  #include "misc_log_ex.h"
  
  
  namespace hw {
  
      /* ======================================================================= */
      /*  SETUP                                                                  */
      /* ======================================================================= */
  
      static device_registry *get_device_registry(bool clear = false){
        static device_registry *registry = new device_registry();
        if (clear)
        {
          delete registry;
          registry = NULL;
        }
        return registry;
      }
  
      static void clear_device_registry(){
        get_device_registry(true);
      }
  
      device_registry::device_registry(){
          hw::core::register_all(registry);
          #ifdef WITH_DEVICE_LEDGER
          hw::ledger::register_all(registry);
          #endif
          atexit(clear_device_registry);
      }
  
      bool device_registry::register_device(const std::string & device_name, device * hw_device){
          auto search = registry.find(device_name);
          if (search != registry.end()){
              return false;
          }
  
          registry.insert(std::make_pair(device_name, std::unique_ptr<device>(hw_device)));
          return true;
      }
  
      device& device_registry::get_device(const std::string & device_descriptor){
          // Device descriptor can contain further specs after first :
          auto delim = device_descriptor.find(':');
          auto device_descriptor_lookup = device_descriptor;
          if (delim != std::string::npos) {
              device_descriptor_lookup = device_descriptor.substr(0, delim);
          }
  
          auto device = registry.find(device_descriptor_lookup);
          if (device == registry.end()) {
              MERROR("Device not found in registry: '" << device_descriptor << "'. Known devices: ");
              for( const auto& sm_pair : registry ) {
                  MERROR(" - " << sm_pair.first);
              }
              throw std::runtime_error("device not found: " + device_descriptor);
          }
          return *device->second;
      }
  
      device& get_device(const std::string & device_descriptor) {
          device_registry *registry = get_device_registry();
          return registry->get_device(device_descriptor);
      }
  
      bool register_device(const std::string & device_name, device * hw_device){
          device_registry *registry = get_device_registry();
          return registry->register_device(device_name, hw_device);
      }
  
  }
  