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package org.codehaus.plexus.interpolation.os;

/*
 * The MIT License
 *
 * Copyright (c) 2004, The Codehaus
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import java.io.IOException;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;

/**
 * NOTE: This class was copied from plexus-utils, to allow this library
 * to stand completely self-contained.
 * 
* @author Trygve Laugstøl * @version $Id$ */ public final class OperatingSystemUtils { private OperatingSystemUtils() { } public static Properties getSystemEnvVars() throws IOException { return getSystemEnvVars( true ); } /** * Return the shell environment variables. If caseSensitive == true, then envar * keys will all be upper-case. * * @param caseSensitive Whether environment variable keys should be treated case-sensitively. * @return Properties object of (possibly modified) envar keys mapped to their values. * @throws IOException */ public static Properties getSystemEnvVars( boolean caseSensitive ) throws IOException { Properties envVars = new Properties(); Map envs = System.getenv(); for ( String key : envs.keySet() ) { String value = envs.get( key ); if ( !caseSensitive) { key = key.toUpperCase( Locale.ENGLISH ); } envVars.put( key, value ); } return envVars; } }




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