Sources/os.cpp

   1 /*
   2  * miniREPL
   3  * https://github.com/vrmiguel/minirepl
   4  *
   5  * Copyright (c) 2020 Vinícius R. Miguel <vinicius.miguel at unifesp.br>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in all
  15  * copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  */
  25
  26 #include "Headers/os.h"
  27
  28 bool is_verbose;
  29 std::unordered_map<std::string, std::string> var_list;  // extern variable
  30
  31 void signal_handler(int s)
  32 {
  33     if (s==SIGINT)
  34     {
  35         cout << "\nSIGINT (Ctrl+C) received. Code " << s << ". Exiting.\n";
  36         exit(s);
  37     }
  38
  39     if (s==SIGHUP)
  40     {
  41         cout << "\nSIGHUP received. Code " << s << ". Exiting.\n";
  42         exit(s);
  43     }
  44 }
  45
  46 SignalHandler::SignalHandler()
  47 {
  48     signal_action.sa_handler = signal_handler;
  49     sigemptyset(&signal_action.sa_mask);
  50     signal_action.sa_flags = 0;
  51     sigaction(SIGINT, &signal_action, NULL);
  52 }
  53
  54 CLIInputs::CLIInputs(int argc, char **argv)
  55 {
  56     if(argc > 1)
  57     {
  58         for(short unsigned int i = 1; i < argc; i++)
  59         {
  60             string s_argv = argv[i];
  61             if (!s_argv.compare("-h") || !s_argv.compare("--help"))
  62             {
  63                 printf("%-20s\tObtain help.\n", "-h, --help");
  64                 printf("%-20s\tShows additional execution data.\n", "-v, --verbose");
  65                 exit(0);
  66             }
  67             if (!s_argv.compare("-v") || !s_argv.compare("--verbose"))
  68             {
  69                 printf("Executing in verbose mode.\n");
  70                 is_verbose = true;
  71             }
  72         }
  73     }
  74 }
  75
  76 findres_t var_find(string var_name)
  77 {
  78     auto res = var_list.find(var_name);
  79     if (res != var_list.end()) {
  80         return {res->second, true};
  81     }
  82     return {"unused", false};   // In case the variable was not found.
  83 }