Environment.cpp

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// DUNE DAQ modification notice:
// This file has been modified from the original ATLAS system source for the DUNE DAQ project.
// Fork baseline commit: system-00-00-20 (2020-09-25).
// Renamed since fork: yes (from src/Environment.cxx to src/Environment.cpp).
 
/*
 *  Environment.cxx
 *  ers
 *
 *  Created by Matthias Wiesmann on 11.01.05.
 *  Copyright 2005 CERN. All rights reserved.
 *
 */
 
#include <stdlib.h>
 
#include "okssystem/Environment.hpp"
#include "okssystem/exceptions.hpp"
 
using namespace OksSystem;

 
void
OksSystem::Environment::set(const std::string& key, const std::string& value)
{
  const char* c_key = key.c_str();
  const char* c_value = value.c_str();
  const int status = ::setenv(c_key, c_value, 1);
  if (status < 0) {
    std::string message = "while setting " + key + " to " + value;
    throw OksSystemCallIssue(ERS_HERE, errno, "setenv", message.c_str());
  }
} // set

 
void
OksSystem::Environment::set(const std::map<std::string, std::string>& values)
{
  for (std::map<std::string, std::string>::const_iterator pos = values.begin(); pos != values.end(); ++pos) {
    set(pos->first, pos->second);
  } // for
} // set

 
std::string
OksSystem::Environment::get(const std::string& key)
{
  const char* c_value = ::getenv(key.c_str());
  if (c_value == 0)
    return std::string();
  return std::string(c_value);
} // get