/**
 *  @file  tools.cc
 *  @brief  Implementation of miscellaneous tools.
 *  @author Andreas Aardal Hanssen
 *  @date 2002-2005
 */

#include "tools.h"

#include <cstring>

#include <errno.h>

using namespace Binc;
using std::string;

Tools::Tools() {}

Tools &Tools::getInstance()
{
  static Tools tools;
  return tools;
}

void Tools::setenv(const string &key, const string &value) const
{
  char *c = strdup((key + "=" + value).c_str());
  putenv(c);
}

string Tools::getenv(const string &key) const
{
  static const string NIL = "";

  const char *c = ::getenv((char *)key.c_str());
  if (c == nullptr)
    return NIL;
  else
    return string(c);
}