src/can-signals.cpp

   1 /*
   2  * Copyright (C) 2015, 2016 "IoT.bzh"
   3  * Author "Romain Forlot" <romain.forlot@iot.bzh>
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *       http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #include <string>
  19 #include <vector>
  20 #include <fnmatch.h>
  21 #include "can-signals.h"
  22
  23 /* Can signal event map making access to afb_event
  24  * external to openxc existing structure.
  25  */
  26 std::map <CanSignal, struct afb_event> subscribed_signals;
  27 std::map <CanSignal, struct afb_event>::iterator subscribed_signals_i;
  28
  29 /* Find one or many signals based on its name or id
  30 * passed through openxc_DynamicField.
  31 */
  32 #define MESSAGE_SET_ID 0
  33 std::vector <CanSignal> find_can_signals(openxc_DynamicField &key)
  34 {
  35     std::vector <CanSignal> signals;
  36         int n_signals, i;
  37
  38         n_signals = getSignalCount();
  39
  40         switch(key->type):
  41         {
  42                 case openxc_DynamicField_Type::openxc_DynamicField_Type_STRING:
  43                         for(const CanSignal& s : SIGNALS[MESSAGE_SET_ID])
  44                         {
  45                                 if(fnmatch(key->string_value, s.genericName) == 0)
  46                                         signals.push_back(s);
  47                         }
  48                         break;
  49                 case openxc_DynamicField_Type::openxc_DynamicField_Type_NUM:
  50                         for(const CanSignal& s : SIGNALS[MESSAGE_SET_ID])
  51                         {
  52                                 CanMessageDefinition *msg_def = s.message;
  53                                 if(msg_def->id == key->numeric_value)
  54                                         signals.push_back(s)
  55                         }
  56                         break;
  57                 default:
  58                         ERROR(interface, "find_can_signals: wrong openxc_DynamicField specified. Use openxc_DynamicField_Type_NUM or openxc_DynamicField_Type_STRING type only.");
  59                         return NULL;
  60                         break;
  61         }
  62
  63         return signals;
  64 }
  65
  66 std::vector<CanSignal>& getSignals()
  67 {
  68         return SIGNALS[MESSAGE_SET_ID];
  69 }
  70
  71 int getSignalCount()
  72 {
  73         return SIGNALS[MESSAGE_SET_ID].size();
  74 }