/usr/include/Poco/Environment.h is in libpoco-dev 1.8.0.1-1ubuntu4.
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// 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
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