* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.internal.util;


/**
 * 
 */
public final class StringUtil {

    /**
     * 
     */
    private StringUtil () {}


    /**
     * Implementation of {@link java.lang.String#join} backported for JDK7.
     * 
     * @param delimiter
     * @param elements

     * <p>
     * 次のように使います．
     * </p>
     *
     * <pre>
     * StringUtil.defaultString(null, "NULL")  = "NULL"
     * StringUtil.defaultString("", "NULL")    = ""
     * StringUtil.defaultString("aaa", "NULL") = "aaa"
     * StringUtil.defaultString("aaa", null) = "aaa"
     * StringUtil.defaultString(null, null) = null
     * </pre>
     *
     * @param str

            if (StringUtil.isBlank(value)) {
                map = Collections.emptyMap();
            } else {
                final Set<String> keySet = new HashSet<>();
                map = split(value, "\n").get(stream -> stream.filter(StringUtil::isNotBlank).map(s -> {
                    final String[] pair = s.split("=");
                    if (pair.length == 1) {
                        return new Pair<>(StringUtil.EMPTY, pair[0].trim());

    FessConfig getFessConfig();

    Logger getLogger();

    default String getHost(final String u) {
        if (StringUtil.isBlank(u)) {
            return StringUtil.EMPTY; // empty
        }

        String url = u;
        final String originalUrl = url;

        int idx = url.indexOf("://");
        if (idx >= 0) {

        final String slackWebhookUrls = fessConfig.getSlackWebhookUrls();
        if (StringUtil.isBlank(slackWebhookUrls)) {
            return;
        }
        final String body = toSlackMessage(discloser);
        StreamUtil.split(slackWebhookUrls, "[,\\s]").of(stream -> stream.filter(StringUtil::isNotBlank).forEach(url -> {

        if (StringUtil.isNotBlank(appType)) {
            return appType;
        }
        return StringUtil.EMPTY;
    }

    public static OptionalEntity<String> getOverrideConfPath() {
        if (FESS_APP_DOCKER.equalsIgnoreCase(getAppType())) {
            final String confPath = System.getenv(FESS_OVERRIDE_CONF_PATH);
            if (StringUtil.isNotBlank(confPath)) {

            return stream(values).get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).collect(Collectors.joining(" ")));
        }
        return StringUtil.EMPTY;
    }

    public static String replace(final Object input, final String regex, final String replacement) {
        if (input == null) {
            return StringUtil.EMPTY;
        }

        final String value = ComponentUtil.getFessConfig().getSystemProperty("oic.default.groups");
        if (StringUtil.isBlank(value)) {
            return StringUtil.EMPTY_STRINGS;
        }
        return split(value, ",").get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).toArray(n -> new String[n]));
    }

    protected static String[] getDefaultRolesAsArray() {

        assertEquals("c", StringUtil.substringToLast("abc", "b"));
        assertEquals("c", StringUtil.substringToLast("abcbc", "b"));
        assertEquals("abc", StringUtil.substringToLast("abc", ""));
        assertEquals("abc", StringUtil.substringToLast("abc", null));
        assertEquals("abc", StringUtil.substringToLast("abc", "dddd"));
    }

    /**
     * @throws Exception
     */

        final String tokenPattern = getParameter(TOKEN_PATTERN);
        final List<Pair<String, String>> responseParams = new ArrayList<>();
        final String encoding = getParameter(ENCODING);
        if (StringUtil.isNotBlank(tokenUrl) && StringUtil.isNotBlank(tokenPattern)) {
            final String tokenHttpMethod = getParameter(TOKEN_METHOD);
            final String tokenReqParams = getParameter(TOKEN_PARAMTERS);