Line data    Source code

       1              : // DUNE DAQ modification notice:
       2              : // This file has been modified from the original ATLAS system source for the DUNE DAQ project.
       3              : // Fork baseline commit: system-00-00-20 (2020-09-25).
       4              : // Renamed since fork: yes (from src/Environment.cxx to src/Environment.cpp).
       5              : 
       6              : /*
       7              :  *  Environment.cxx
       8              :  *  ers
       9              :  *
      10              :  *  Created by Matthias Wiesmann on 11.01.05.
      11              :  *  Copyright 2005 CERN. All rights reserved.
      12              :  *
      13              :  */
      14              : 
      15              : #include <stdlib.h>
      16              : 
      17              : #include "okssystem/Environment.hpp"
      18              : #include "okssystem/exceptions.hpp"
      19              : 
      20              : using namespace OksSystem;
      21              : 
      22              : /** Sets an environnement variable
      23              :  * \param key the name of the variable
      24              :  * \param value the value of the variable
      25              :  * \exception PosixIssue unable to set environnement variable
      26              :  */
      27              : 
      28              : void
      29            0 : OksSystem::Environment::set(const std::string& key, const std::string& value)
      30              : {
      31            0 :   const char* c_key = key.c_str();
      32            0 :   const char* c_value = value.c_str();
      33            0 :   const int status = ::setenv(c_key, c_value, 1);
      34            0 :   if (status < 0) {
      35            0 :     std::string message = "while setting " + key + " to " + value;
      36            0 :     throw OksSystemCallIssue(ERS_HERE, errno, "setenv", message.c_str());
      37            0 :   }
      38            0 : } // set
      39              : 
      40              : /** Sets a collection of environnement variables.
      41              :  * \param values The  map of string string pairs containing the name / values pairs
      42              :  * \exception PosixIssue unable to set environnement variable
      43              :  */
      44              : 
      45              : void
      46            0 : OksSystem::Environment::set(const std::map<std::string, std::string>& values)
      47              : {
      48            0 :   for (std::map<std::string, std::string>::const_iterator pos = values.begin(); pos != values.end(); ++pos) {
      49            0 :     set(pos->first, pos->second);
      50              :   } // for
      51            0 : } // set
      52              : 
      53              : /** Gets an environnement variable
      54              :  * \param key the name of the variable
      55              :  * \return the value of the variable, of the string \c NO_VALUE if the variable is unknown.
      56              :  */
      57              : 
      58              : std::string
      59            0 : OksSystem::Environment::get(const std::string& key)
      60              : {
      61            0 :   const char* c_value = ::getenv(key.c_str());
      62            0 :   if (c_value == 0)
      63            0 :     return std::string();
      64            0 :   return std::string(c_value);
      65              : } // get