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/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.apache.groovy.util;

public class SystemUtil {
    /**
     * Sets a system property from a name=value String
     *
     * @param nameValue the non-null name=value String
     * @return the found name
     */
    public static String setSystemPropertyFrom(final String nameValue) {
        if (nameValue == null) throw new IllegalArgumentException("argument should not be null");

        String name, value;
        int i = nameValue.indexOf("=");

        if (i == -1) {
            name = nameValue;
            value = Boolean.TRUE.toString();
        } else {
            name = nameValue.substring(0, i);
            value = nameValue.substring(i + 1, nameValue.length());
        }
        name = name.trim();

        System.setProperty(name, value);
        return name;
    }
}