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// -*- c++ -*-
/* $Id$ */
/* timeval.cc
*
* Copyright (C) 2002 The gtkmm Development Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <glibmm/timeval.h>
namespace Glib
{
void TimeVal::assign_current_time()
{
g_get_current_time(this);
}
bool TimeVal::assign_from_iso8601(const Glib::ustring& iso_date)
{
return g_time_val_from_iso8601(iso_date.c_str(), this);
}
void TimeVal::add(const TimeVal& rhs)
{
g_return_if_fail(tv_usec >= 0 && tv_usec < G_USEC_PER_SEC);
g_return_if_fail(rhs.tv_usec >= 0 && rhs.tv_usec < G_USEC_PER_SEC);
tv_usec += rhs.tv_usec;
if(tv_usec >= G_USEC_PER_SEC)
{
tv_usec -= G_USEC_PER_SEC;
++tv_sec;
}
tv_sec += rhs.tv_sec;
}
void TimeVal::subtract(const TimeVal& rhs)
{
g_return_if_fail(tv_usec >= 0 && tv_usec < G_USEC_PER_SEC);
g_return_if_fail(rhs.tv_usec >= 0 && rhs.tv_usec < G_USEC_PER_SEC);
tv_usec -= rhs.tv_usec;
if(tv_usec < 0)
{
tv_usec += G_USEC_PER_SEC;
--tv_sec;
}
tv_sec -= rhs.tv_sec;
}
void TimeVal::add_seconds(long seconds)
{
g_return_if_fail(tv_usec >= 0 && tv_usec < G_USEC_PER_SEC);
tv_sec += seconds;
}
void TimeVal::subtract_seconds(long seconds)
{
g_return_if_fail(tv_usec >= 0 && tv_usec < G_USEC_PER_SEC);
tv_sec -= seconds;
}
void TimeVal::add_milliseconds(long milliseconds)
{
g_return_if_fail(tv_usec >= 0 && tv_usec < G_USEC_PER_SEC);
tv_usec += (milliseconds % 1000) * 1000;
if(tv_usec < 0)
{
tv_usec += G_USEC_PER_SEC;
--tv_sec;
}
else if(tv_usec >= G_USEC_PER_SEC)
{
tv_usec -= G_USEC_PER_SEC;
++tv_sec;
}
tv_sec += milliseconds / 1000;
}
void TimeVal::subtract_milliseconds(long milliseconds)
{
add_milliseconds(-1 * milliseconds);
}
void TimeVal::add_microseconds(long microseconds)
{
g_time_val_add(this, microseconds);
}
void TimeVal::subtract_microseconds(long microseconds)
{
g_time_val_add(this, -1 * microseconds);
}
Glib::ustring TimeVal::as_iso8601() const
{
gchar *retval = g_time_val_to_iso8601(const_cast<Glib::TimeVal*>(this));
if (retval)
{
Glib::ustring iso_date(retval);
g_free(retval);
return iso_date;
}
return Glib::ustring();
}
} // namespace Glib
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