[CLI-246] GnuParser removes first character from longer argument containing single character option

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.2
• Component/s: CLI-1.x

Environment

Windows 64-bit

• Assignee: Unassigned
• Reporter: Pierre-Luc Lacroix
• Created: 16/Sep/14 14:25
• Updated: 17/Sep/14 16:12

Description

Title might be hard to understand, but basically:

Arguments:
String [] cli =

{"-cc", "-ccc", "-c"};

Options:
Options opts = new Options();
opts.addOption(OptionBuilder.create("cc"));
opts.addOption(OptionBuilder.create("c"));

As you can see, "-ccc" is an extra unrecognized argument.

When you try to parse it:

CommandLineParser parser = new GnuParser();
CommandLine line = parser.parse(opts, cli, true);


Content on line:
args: [cc, -c]
line: [[ option: cc :: null ], [ option: c :: null ]]

I would expect:
args: [-ccc]
line: [[ option: cc :: null ], [ option: c :: null ]]


Wrote a few unit tests (3rd one fails):

UnitTest.java

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.junit.Assert;
import org.junit.Test;


public class CommonsCli {

@Test
public void test1() throws ParseException {

String [] cli = {"-cc"};

Options opts = new Options();
opts.addOption(OptionBuilder.create("cc"));


CommandLineParser parser = new GnuParser();
CommandLine line = parser.parse(opts, cli);

if (line.getArgs().length > 0 ) { Assert.fail("Extra argument found: " + line.getArgList().get(0)); }

}

@Test
public void test2() throws ParseException {

String [] cli = {"-cc", "-ccc"};

Options opts = new Options();
opts.addOption(OptionBuilder.create("cc"));

CommandLineParser parser = new GnuParser();
CommandLine line = parser.parse(opts, cli, true);

if (line.getArgs().length > 0 ) { Assert.assertEquals("-ccc", line.getArgList().get(0)); }

}


@Test
public void test3() throws ParseException {

String [] cli = {"-cc", "-ccc", "-c"}

;

Options opts = new Options();
opts.addOption(OptionBuilder.create("cc"));
opts.addOption(OptionBuilder.create("c"));

CommandLineParser parser = new GnuParser();
CommandLine line = parser.parse(opts, cli, true);

if (line.getArgs().length > 0 )

{ Assert.assertEquals("-ccc", line.getArgList().get(0)); }

}

}