/*
 * Copyright (c) 2005, 2015, 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
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package org.openjdk.jmh.runner;

import org.openjdk.jmh.util.Utils;

import java.io.BufferedOutputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Paths;

/**
 * Main program entry point for exporting the system properties, used for detecting the VM version.
 */
class PrintPropertiesMain {

    /**
     * @param argv Command line arguments
     */
    public static void main(String[] argv) throws Exception {
        if (argv.length != 1) {
            throw new IllegalArgumentException("Usage: java " + PrintPropertiesMain.class.getName() + " <xml-output-file>");
        }
        try (OutputStream os = new BufferedOutputStream(Files.newOutputStream(Paths.get(argv[0])))) {
            Utils.getRecordedSystemProperties().storeToXML(
                    os,
                    "JMH properties export for target JVM",
                    "UTF-8");
        }
    }

}
