com.greenpepper.util.cli.PosixParser Maven / Gradle / Ivy
/*
* Copyright (c) 2007 Pyxis Technologies inc.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA,
* or see the FSF site: http://www.fsf.org.
*/
package com.greenpepper.util.cli;
import com.greenpepper.util.CollectionUtil;
import com.greenpepper.util.StringUtil;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* PosixParser class.
*
* @author oaouattara
* @version $Id: $Id
*/
public class PosixParser implements CommandLineParser
{
/**
* build.
*
* @param option a {@link com.greenpepper.util.cli.OptionBuilder} object.
* @param options a {@link java.lang.String} object.
*/
public void build( OptionBuilder option, String... options )
{
for (String opt : options)
{
Matcher matcher = Pattern.compile( "(--[^\\s]*)(\\s(.+))?" ).matcher( opt );
if (matcher.matches())
{
option.withLongForm( matcher.group( 1 ) );
if (!StringUtil.isBlank( matcher.group( 3 ) )) option.wantsArgument( matcher.group( 3 ) );
continue;
}
matcher = Pattern.compile( "(-.)(\\s+(.+))?" ).matcher( opt );
if (matcher.matches())
{
option.withShortForm( matcher.group( 1 ) );
if (!StringUtil.isBlank( matcher.group( 3 ) )) option.wantsArgument( matcher.group( 3 ) );
continue;
}
option.withDescription( opt );
}
}
/**
* parse.
*
* @param cli a {@link com.greenpepper.util.cli.CommandLine} object.
* @param args an array of {@link java.lang.String} objects.
* @throws com.greenpepper.util.cli.InvalidOptionException if any.
* @throws com.greenpepper.util.cli.WrongOptionUsageException if any.
*/
public void parse( CommandLine cli, String[] args ) throws InvalidOptionException, WrongOptionUsageException
{
List tokens = CollectionUtil.toList( args );
while (!tokens.isEmpty())
{
String token = CollectionUtil.shift( tokens );
if (Pattern.compile( "(--.+)" ).matcher( token ).lookingAt())
{
cli.getOptionWithLongForm( token ).consume( tokens );
}
else if (Pattern.compile( "(-.)" ).matcher( token ).lookingAt())
{
cli.getOptionWithShortForm( token ).consume( tokens );
}
else
{
cli.addArgument( token );
}
}
}
}