// Time Zones
//
// Douglas Thrift
//
// $Id$

#ifndef _TimeZones_hpp_
#define _TimeZones_hpp_

#include <iostream>
#include <string>
#include <cstdlib>
#include <cstdio>
#include <ctime>

using namespace std;

inline string sgetenv(const string& name)
{
	char* value = getenv(name.c_str());

	return value != NULL ? value : "";
}

inline int sputenv(const string& name)
{
	char* value = new char[name.size() + 1];

	sprintf(value, name.c_str());

	int code = putenv(value);

	delete [] value;

	return code;
}

inline void sunsetenv(const string& name) { unsetenv(name.c_str()); }

#ifdef __CYGWIN__

inline time_t timegm(struct tm* time)
{
	string zone = sgetenv("TZ");

	sputenv("TZ=");
	tzset();

	time_t when = mktime(time);

	sputenv("TZ=" + zone);
	tzset();

	return when;
}

#endif

class TimeZones
{
private:
	//
public:
	TimeZones();
	~TimeZones() {}
};

#endif // _TimeZones_hpp_