mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-13 10:32:57 +01:00
90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
//
|
|
// Timezone.h
|
|
//
|
|
// $Id: //poco/1.4/Foundation/include/Poco/Timezone.h#1 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: DateTime
|
|
// Module: Timezone
|
|
//
|
|
// Definition of the Timezone class.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person or organization
|
|
// obtaining a copy of the software and accompanying documentation covered by
|
|
// this license (the "Software") to use, reproduce, display, distribute,
|
|
// execute, and transmit the Software, and to prepare derivative works of the
|
|
// Software, and to permit third-parties to whom the Software is furnished to
|
|
// do so, all subject to the following:
|
|
//
|
|
// The copyright notices in the Software and this entire statement, including
|
|
// the above license grant, this restriction and the following disclaimer,
|
|
// must be included in all copies of the Software, in whole or in part, and
|
|
// all derivative works of the Software, unless such copies or derivative
|
|
// works are solely in the form of machine-executable object code generated by
|
|
// a source language processor.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
|
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
|
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
|
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
// DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
|
|
#ifndef Foundation_Timezone_INCLUDED
|
|
#define Foundation_Timezone_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include "Poco/Timestamp.h"
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
class Foundation_API Timezone
|
|
/// This class provides information about the current timezone.
|
|
{
|
|
public:
|
|
static int utcOffset();
|
|
/// Returns the offset of local time to UTC, in seconds.
|
|
/// local time = UTC + utcOffset() + dst().
|
|
|
|
static int dst();
|
|
/// Returns the daylight saving time offset in seconds if
|
|
/// daylight saving time is in use.
|
|
/// local time = UTC + utcOffset() + dst().
|
|
|
|
static bool isDst(const Timestamp& timestamp);
|
|
/// Returns true if daylight saving time is in effect
|
|
/// for the given time. Depending on the operating system
|
|
/// platform this might only work reliably for certain
|
|
/// date ranges, as the C library's localtime() function
|
|
/// is used.
|
|
|
|
static int tzd();
|
|
/// Returns the time zone differential for the current timezone.
|
|
/// The timezone differential is computed as utcOffset() + dst()
|
|
/// and is expressed in seconds.
|
|
|
|
static std::string name();
|
|
/// Returns the timezone name currently in effect.
|
|
|
|
static std::string standardName();
|
|
/// Returns the timezone name if not daylight saving time is in effect.
|
|
|
|
static std::string dstName();
|
|
/// Returns the timezone name if daylight saving time is in effect.
|
|
};
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_Timezone_INCLUDED
|