org.mutabilitydetector.cli.OptionParserHelper Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of MutabilityDetector Show documentation

Lightweight analysis tool for detecting mutability in Java classes.

There is a newer version: 0.10.6

/* 
 * Mutability Detector
 *
 * Copyright 2009 Graham Allan
 * 
 * Licensed 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.mutabilitydetector.cli;

import static java.util.Arrays.copyOf;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;

/**
 * Interacts with the Apache CLI to parse the options from the command line
 * arguments. Delegates to a {@link ParsingAction} to allow extracting the
 * options.
 */
public class OptionParserHelper {

	private Options options;
	private String[] args;

	public OptionParserHelper(Options options, String[] args) {
		this.options = options;
		this.args = copyOf(args, args.length);
	}

	public void parseOptions(ParsingAction action) {
		try {
			CommandLineParser parser = new GnuParser();
			CommandLine line = parser.parse(options, args);
			action.doParsingAction(line);
		} catch (ParseException e) {
			System.out.println("Parsing command line options failed.%nReason: " + e.getMessage());
			throw new CommandLineOptionsException(e);
		}

	}
}

interface ParsingAction {
	void doParsingAction(CommandLine line);
}