mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 01:12:12 +00:00
125 lines
3.6 KiB
C++
125 lines
3.6 KiB
C++
//
|
|
// Environment.h
|
|
//
|
|
// Library: Foundation
|
|
// Package: Core
|
|
// Module: Environment
|
|
//
|
|
// Definition of the Environment class.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#ifndef Foundation_Environment_INCLUDED
|
|
#define Foundation_Environment_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
|
|
|
|
namespace Poco
|
|
{
|
|
|
|
|
|
class Foundation_API Environment
|
|
/// This class provides access to environment variables
|
|
/// and some general system information.
|
|
{
|
|
public:
|
|
typedef UInt8 NodeId[6]; /// Ethernet address.
|
|
|
|
static std::string get(const std::string & name);
|
|
/// Returns the value of the environment variable
|
|
/// with the given name. Throws a NotFoundException
|
|
/// if the variable does not exist.
|
|
|
|
static std::string get(const std::string & name, const std::string & defaultValue);
|
|
/// Returns the value of the environment variable
|
|
/// with the given name. If the environment variable
|
|
/// is undefined, returns defaultValue instead.
|
|
|
|
static bool has(const std::string & name);
|
|
/// Returns true iff an environment variable
|
|
/// with the given name is defined.
|
|
|
|
static void set(const std::string & name, const std::string & value);
|
|
/// Sets the environment variable with the given name
|
|
/// to the given value.
|
|
|
|
static std::string osName();
|
|
/// Returns the operating system name.
|
|
|
|
static std::string osDisplayName();
|
|
/// Returns the operating system name in a
|
|
/// "user-friendly" way.
|
|
///
|
|
/// Currently this is only implemented for
|
|
/// Windows. There it will return names like
|
|
/// "Windows XP" or "Windows 7/Server 2008 SP2".
|
|
/// On other platforms, returns the same as
|
|
/// osName().
|
|
|
|
static std::string osVersion();
|
|
/// Returns the operating system version.
|
|
|
|
static std::string osArchitecture();
|
|
/// Returns the operating system architecture.
|
|
|
|
static std::string nodeName();
|
|
/// Returns the node (or host) name.
|
|
|
|
static void nodeId(NodeId & id);
|
|
/// Returns the Ethernet address of the first Ethernet
|
|
/// adapter found on the system.
|
|
///
|
|
/// Throws a SystemException if no Ethernet adapter is available.
|
|
|
|
static std::string nodeId();
|
|
/// Returns the Ethernet address (format "xx:xx:xx:xx:xx:xx")
|
|
/// of the first Ethernet adapter found on the system.
|
|
///
|
|
/// Throws a SystemException if no Ethernet adapter is available.
|
|
|
|
static unsigned processorCount();
|
|
/// Returns the number of processors installed in the system.
|
|
///
|
|
/// If the number of processors cannot be determined, returns 1.
|
|
|
|
static Poco::UInt32 libraryVersion();
|
|
/// Returns the POCO C++ Libraries version as a hexadecimal
|
|
/// number in format 0xAABBCCDD, where
|
|
/// - AA is the major version number,
|
|
/// - BB is the minor version number,
|
|
/// - CC is the revision number, and
|
|
/// - DD is the patch level number.
|
|
///
|
|
/// Some patch level ranges have special meanings:
|
|
/// - Dx mark development releases,
|
|
/// - Ax mark alpha releases, and
|
|
/// - Bx mark beta releases.
|
|
|
|
static Poco::Int32 os();
|
|
/// Return the operating system as defined
|
|
/// in the include Foundation/Platform.h (POCO_OS)
|
|
|
|
static Poco::Int32 arch();
|
|
/// Return the underlying cpu architecture that runs this operating system
|
|
/// as defined in Foundation/Platform (POCO_ARCH)
|
|
|
|
static bool isUnix();
|
|
/// Return true if the operating system belongs to the Linux family
|
|
|
|
static bool isWindows();
|
|
/// Return true if the operating system belongs to the Windows family
|
|
};
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_Environment_INCLUDED
|