mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-17 03:42:48 +00:00
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
79 lines
1.4 KiB
C++
79 lines
1.4 KiB
C++
//
|
|
// Timezone_VXX.cpp
|
|
//
|
|
// Library: Foundation
|
|
// Package: DateTime
|
|
// Module: Timezone
|
|
//
|
|
// Copyright (c) 2004-2011, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#include "Poco/Timezone.h"
|
|
#include "Poco/Exception.h"
|
|
#include "Poco/Environment.h"
|
|
#include <ctime>
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
int Timezone::utcOffset()
|
|
{
|
|
std::time_t now = std::time(NULL);
|
|
struct std::tm t;
|
|
gmtime_r(&now, &t);
|
|
std::time_t utc = std::mktime(&t);
|
|
return now - utc;
|
|
}
|
|
|
|
|
|
int Timezone::dst()
|
|
{
|
|
std::time_t now = std::time(NULL);
|
|
struct std::tm t;
|
|
if (localtime_r(&now, &t) != OK)
|
|
throw Poco::SystemException("cannot get local time DST offset");
|
|
return t.tm_isdst == 1 ? 3600 : 0;
|
|
}
|
|
|
|
|
|
bool Timezone::isDst(const Timestamp& timestamp)
|
|
{
|
|
std::time_t time = timestamp.epochTime();
|
|
struct std::tm* tms = std::localtime(&time);
|
|
if (!tms) throw Poco::SystemException("cannot get local time DST flag");
|
|
return tms->tm_isdst > 0;
|
|
}
|
|
|
|
|
|
std::string Timezone::name()
|
|
{
|
|
// format of TIMEZONE environment variable:
|
|
// name_of_zone:<(unused)>:time_in_minutes_from_UTC:daylight_start:daylight_end
|
|
std::string tz = Environment::get("TIMEZONE", "UTC");
|
|
std::string::size_type pos = tz.find(':');
|
|
if (pos != std::string::npos)
|
|
return tz.substr(0, pos);
|
|
else
|
|
return tz;
|
|
}
|
|
|
|
|
|
std::string Timezone::standardName()
|
|
{
|
|
return name();
|
|
}
|
|
|
|
|
|
std::string Timezone::dstName()
|
|
{
|
|
return name();
|
|
}
|
|
|
|
|
|
} // namespace Poco
|