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#ifndef DATE_CLOCK_DEVICE_HPP___
#define DATE_CLOCK_DEVICE_HPP___
/* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc.
* Use, modification and distribution is subject to the
* Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
* Author: Jeff Garland, Bart Garst
* $Date$
*/
#include "boost/date_time/c_time.hpp"
namespace boost {
namespace date_time {
//! A clock providing day level services based on C time_t capabilities
/*! This clock uses Posix interfaces as its implementation and hence
* uses the timezone settings of the operating system. Incorrect
* user settings will result in incorrect results for the calls
* to local_day.
*/
template<class date_type>
class day_clock
{
public:
typedef typename date_type::ymd_type ymd_type;
//! Get the local day as a date type
static date_type local_day()
{
return date_type(local_day_ymd());
}
//! Get the local day as a ymd_type
static typename date_type::ymd_type local_day_ymd()
{
::std::tm result;
::std::tm* curr = get_local_time(result);
return ymd_type(static_cast<unsigned short>(curr->tm_year + 1900),
static_cast<unsigned short>(curr->tm_mon + 1),
static_cast<unsigned short>(curr->tm_mday));
}
//! Get the current day in universal date as a ymd_type
static typename date_type::ymd_type universal_day_ymd()
{
::std::tm result;
::std::tm* curr = get_universal_time(result);
return ymd_type(static_cast<unsigned short>(curr->tm_year + 1900),
static_cast<unsigned short>(curr->tm_mon + 1),
static_cast<unsigned short>(curr->tm_mday));
}
//! Get the UTC day as a date type
static date_type universal_day()
{
return date_type(universal_day_ymd());
}
private:
static ::std::tm* get_local_time(std::tm& result)
{
::std::time_t t;
::std::time(&t);
return c_time::localtime(&t, &result);
}
static ::std::tm* get_universal_time(std::tm& result)
{
::std::time_t t;
::std::time(&t);
return c_time::gmtime(&t, &result);
}
};
} } //namespace date_time
#endif
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