mirror of
https://github.com/ClickHouse/ClickHouse.git
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b79ead9c84
* Replicate poco into base/poco/ * De-register poco submodule * Build poco from ClickHouse * Exclude poco from stylecheck * Exclude poco from whitespace check * Exclude poco from typo check * Remove x bit from sources/headers (the style check complained) * Exclude poco from duplicate include check * Fix fasttest * Remove contrib/poco-cmake/* * Simplify poco build descriptions * Remove poco stuff not used by ClickHouse * Glob poco sources * Exclude poco from clang-tidy
68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
//
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// Timezone.h
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//
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// Library: Foundation
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// Package: DateTime
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// Module: Timezone
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//
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// Definition of the Timezone class.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_Timezone_INCLUDED
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#define Foundation_Timezone_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/Timestamp.h"
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namespace Poco {
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class Foundation_API Timezone
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/// This class provides information about the current timezone.
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{
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public:
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static int utcOffset();
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/// Returns the offset of local time to UTC, in seconds.
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/// local time = UTC + utcOffset() + dst().
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static int dst();
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/// Returns the daylight saving time offset in seconds if
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/// daylight saving time is in use.
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/// local time = UTC + utcOffset() + dst().
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static bool isDst(const Timestamp& timestamp);
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/// Returns true if daylight saving time is in effect
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/// for the given time. Depending on the operating system
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/// platform this might only work reliably for certain
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/// date ranges, as the C library's localtime() function
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/// is used.
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static int tzd();
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/// Returns the time zone differential for the current timezone.
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/// The timezone differential is computed as utcOffset() + dst()
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/// and is expressed in seconds.
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static std::string name();
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/// Returns the timezone name currently in effect.
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static std::string standardName();
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/// Returns the timezone name if not daylight saving time is in effect.
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static std::string dstName();
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/// Returns the timezone name if daylight saving time is in effect.
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};
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} // namespace Poco
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#endif // Foundation_Timezone_INCLUDED
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