DwmTimeUtil.hh

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//===========================================================================
// @(#) $DwmPath$
//===========================================================================
//  Copyright (c) Daniel W. McRobb 1999-2007
//  All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions
//  are met:
//
//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
//  2. Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
//  3. The names of the authors and copyright holders may not be used to
//     endorse or promote products derived from this software without
//     specific prior written permission.
//
//  IN NO EVENT SHALL DANIEL W. MCROBB BE LIABLE TO ANY PARTY FOR
//  DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
//  INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE,
//  EVEN IF DANIEL W. MCROBB HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
//  DAMAGE.
//
//  THE SOFTWARE PROVIDED HEREIN IS ON AN "AS IS" BASIS, AND
//  DANIEL W. MCROBB HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
//  UPDATES, ENHANCEMENTS, OR MODIFICATIONS. DANIEL W. MCROBB MAKES NO
//  REPRESENTATIONS AND EXTENDS NO WARRANTIES OF ANY KIND, EITHER
//  IMPLIED OR EXPRESS, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//  WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,
//  OR THAT THE USE OF THIS SOFTWARE WILL NOT INFRINGE ANY PATENT,
//  TRADEMARK OR OTHER RIGHTS.
//===========================================================================
 
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
 
#ifndef _DWMTIMEUTIL_HH_
#define _DWMTIMEUTIL_HH_
 
extern "C" {
#include <time.h>
#include <sys/time.h>
}
 
#include <string>
 
namespace Dwm {
  
  //--------------------------------------------------------------------------
  //      class TimeUtil 
  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------
  class TimeUtil
  {
  public:
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    static void GmTime(time_t unixsecs, struct tm & result);
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    static void LocalTime(time_t unixsecs, struct tm & result);
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    static bool SubtractTimeval(const struct timeval & lhs,
                                const struct timeval & rhs,
                                struct timeval & result);
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    static bool ParseDateTime(const std::string & dateTimeString, 
                              struct tm & tm);
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    static bool ParseDateTime(const std::string & dateTimeString, time_t & t);
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    static time_t MidnightDaysLater(int daysLater);
  };
  
  
}  // namespace Dwm
 
#endif  // _DWMTIMEUTIL_HH_
 
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