Java Args Parse parseCommandLineArguments(String[] args)

Description

As the name implies, this method parses command line arguments, provided in the standard form of an array of String-objects into a Map.

License

Open Source License

Parameter

Parameter	Description
args	the parameters to be turned into a <code>Map</code>-object

Return

a Map

Declaration

public static Map parseCommandLineArguments(String[] args) 

Method Source Code

//package com.java2s;
/*/*from   w  w w.  j  a  v  a  2 s .c  o  m*/
 * This file is part of ROOSSTER.
 * Copyright 2004, Benjamin Reitzammer <benjamin@roosster.org>
 * All rights reserved.
 *
 * ROOSSTER is free software; you can redistribute it and/or modify
 * it under the terms of the Artistic License.
 *
 * You should have received a copy of the Artistic License
 * along with ROOSSTER; if not, go to
 * http://www.opensource.org/licenses/artistic-license.php for details
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.util.HashMap;

import java.util.Map;

public class Main {
    /**
     * As the name implies, this method parses command line arguments, provided
     * in the standard form of an array of <code>String</code>-objects into a
     * <code>Map</code>. <br/>
     * Strings from the array, that start with a single dash ("-") become keys
     * in the map, while the following array element becomes the value, except
     * when the dash-preceded String contains an equal sign ("="). In this case
     * the String will be split a the position of the equal sign. The
     * left-hand-side will be turned into the key of a Map-entry, while the
     * right-hand-side becomes the value of the corresponding Map-entry. <br />
     * Example:<br />
     *
     * @param args the parameters to be turned into a <code>Map</code>-object
     * @return a <code>Map</code>
     */
    public static Map parseCommandLineArguments(String[] args) {
        HashMap retMap = new HashMap();
        String lastArg = null;
        for (int i = 0; i < args.length; i++) {

            String arg = args[i];
            if (arg.startsWith("-")) {
                arg = arg.substring(1, arg.length());
                String[] values = arg.split("=", 2);
                lastArg = arg;
                retMap.put(values[0], values.length > 1 ? values[1] : "");
            } else if (lastArg != null) {
                String val = (String) retMap.get(lastArg);
                if ("".equals(val))
                    retMap.put(lastArg, arg);
            }
        }

        return retMap;
    }
}

Related

1. parseArguments(final String[] args)
2. parseArguments(String[] args)
3. parseCLInput(String[] args)
4. parseCommandLine(String[] args)
5. parseCommandLineArguments(String[] args)
6. parseLines(String[] lines)
7. parseProgramArguments(String[] args)
8. parseProviderOptions(String[] options)
9. parseStringArrayToSet(String[] value)