Quelle SysInfo.h Sprache: C

/*
* 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 1st 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

quality92%

¤ Dauer der Verarbeitung: 0.1 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.