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- /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla embedding code.
- *
- * The Initial Developers of the Original Code are
- * Benjamin Smedberg <bsmedberg@covad.net> and
- * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>.
- *
- * Portions created by the Initial Developer are Copyright (C) 2003/2004
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- #include "nsISupports.idl"
-
- /**
- * Scriptable access to the current process environment.
- *
- */
- [scriptable, uuid(101d5941-d820-4e85-a266-9a3469940807)]
- interface nsIEnvironment : nsISupports
- {
- /**
- * Set the value of an environment variable.
- *
- * @param aName the variable name to set.
- * @param aValue the value to set.
- */
- void set(in AString aName, in AString aValue);
-
- /**
- * Get the value of an environment variable.
- *
- * @param aName the variable name to retrieve.
- * @return returns the value of the env variable. An empty string
- * will be returned when the env variable does not exist or
- * when the value itself is an empty string - please use
- * |exists()| to probe whether the env variable exists
- * or not.
- */
- AString get(in AString aName);
-
- /**
- * Check the existence of an environment variable.
- * This method checks whether an environment variable is present in
- * the environment or not.
- *
- * - For Unix/Linux platforms we follow the Unix definition:
- * An environment variable exists when |getenv()| returns a non-NULL value.
- * An environment variable does not exist when |getenv()| returns NULL.
- * - For non-Unix/Linux platforms we have to fall back to a
- * "portable" definition (which is incorrect for Unix/Linux!!!!)
- * which simply checks whether the string returned by |Get()| is empty
- * or not.
- *
- * @param aName the variable name to probe.
- * @return if the variable has been set, the value returned is
- * PR_TRUE. If the variable was not defined in the
- * environment PR_FALSE will be returned.
- */
- boolean exists(in AString aName);
- };
-
-