package de.intevation.artifactdatabase;

import java.io.UnsupportedEncodingException;

import java.util.UUID;

import org.apache.commons.codec.DecoderException;

import org.apache.commons.codec.binary.Hex;

import org.apache.log4j.Logger;

/**
 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
 */
public final class StringUtils
{
    private static Logger logger = Logger.getLogger(StringUtils.class);

    public static final String newUUID() {
        return UUID.randomUUID().toString();
    }

    public static final boolean checkUUID(String uuid) {
        try {
            UUID.fromString(uuid);
        }
        catch (IllegalArgumentException iae) {
            logger.warn(iae.getLocalizedMessage());
            return false;
        }
        return true;
    }

    public static final byte [] getUTF8Bytes(String s) {
        try {
            return s.getBytes("UTF-8");
        }
        catch (UnsupportedEncodingException usee) {
            logger.error(usee.getLocalizedMessage(), usee);
            return s.getBytes();
        }
    }

    public static final byte [] decodeHex(String s) {
        try {
            return Hex.decodeHex(s.toCharArray());
        }
        catch (DecoderException de) {
            return null;
        }
    }
}
// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :