/*
* Copyright ( c ) 2019 , 2021 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation . Oracle designates this
* particular file as subject to the " Classpath " exception as provided
* by Oracle in the LICENSE file that accompanied this code .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
#ifndef SYSINFO_H
#define SYSINFO_H
#include "tstrings.h"
//
// This namespace provides information about environment in which
// the current application runs.
// It is for general purpose use.
// Functions in this namespaces are just queries about the environment.
// Functions that change the existing environment like file or directory
// creation should not be added to this namespace.
//
namespace SysInfo {
/**
* Returns temp dir ( for the current user ) .
*/
tstring getTempDir();
/**
* Returns absolute path to the process executable .
*/
tstring getProcessModulePath();
/**
* Returns absolute path to the current executable module .
*/
tstring getCurrentModulePath();
enum CommandArgProgramNameMode {
IncludeProgramName,
ExcludeProgramName
};
/**
* Retrieves the command - line arguments for the current process .
* With IncludeProgramName option returns result similar to argv / argc .
* With ExcludeProgramName option program name
* ( the 1 st element of command line )
* is excluded .
*/
tstring_array getCommandArgs(
CommandArgProgramNameMode progNameMode = ExcludeProgramName);
/**
* Returns value of environment variable with the given name .
* Throws exception if variable is not set or any other error occurred
* reading the value .
*/
tstring getEnvVariable(const tstring& name);
/**
* Returns value of environment variable with the given name .
* Returns value of ' defValue ' parameter if variable is not set or any
* other error occurred reading the value .
*/
tstring getEnvVariable(const std::nothrow_t&, const tstring& name,
const tstring& defValue=tstring());
/**
* Sets the value of environment variable with the given name to the given value .
*/
void setEnvVariable(const tstring& name, const tstring& value);
/**
* Returns ' true ' if environment variable with the given name is set .
*/
bool isEnvVariableSet(const tstring& name);
}
#endif // SYSINFO_H
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