/**
 * 
 */
package edu.unc.genomics;

import java.nio.file.Files;
import java.nio.file.Path;

import com.beust.jcommander.IParameterValidator;
import com.beust.jcommander.ParameterException;

/**
 * @author timpalpant
 *
 */
public class ReadablePathValidator implements IParameterValidator {

	/* (non-Javadoc)
	 * @see com.beust.jcommander.IParameterValidator#validate(java.lang.String, java.lang.String)
	 */
	@Override
	public void validate(String name, String value) throws ParameterException {
		PathConverter converter = new PathConverter();
		Path p = converter.convert(value);
		if (!Files.isReadable(p)) {
			throw new ParameterException("Parameter " + name + " should be a readable file");
		}
	}

}