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//
// Timezone.h
//
// Library: Foundation
// Package: DateTime
// Module: Timezone
//
// Definition of the Timezone class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#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 int dst(const Poco::Timestamp& timestamp);
/// Returns the daylight saving time offset in seconds if
/// daylight saving time is in use for the given time.
/// 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
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