Sha256: 1eb15ade642b3801049bf95f1daa58be1a586f888fe9157c197509efb354f981
Contents?: true
Size: 1.08 KB
Versions: 16
Compression:
Stored size: 1.08 KB
Contents
/**
* @file
* Declares the scoped resource for temporarily changing an environment variable.
*/
#pragma once
#include <leatherman/util/scoped_resource.hpp>
#include <string>
#include <boost/optional.hpp>
namespace leatherman { namespace util {
/**
* This is an RAII wrapper for temporarily changing an environment variable.
* It sets the environment on construction and restores it on destruction.
*/
struct scoped_env : scoped_resource<std::tuple<std::string, boost::optional<std::string>>>
{
/**
* Temporarily overrides the value of an environment variable.
* @param var The environment variable to update.
* @param newval The value to set it to during existence of this object.
*/
explicit scoped_env(std::string var, std::string const& newval);
/**
* Temporarily unsets an environment variable.
*/
explicit scoped_env(std::string var);
private:
static void restore(std::tuple<std::string, boost::optional<std::string>> &);
};
}} // namespace leatherman::util
Version data entries
16 entries across 16 versions & 2 rubygems