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/*
 * Copyright 2021 original authors
 *
 * 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
 *
 * https://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 com.tailrocks.jambalaya.tenancy;

import edu.umd.cs.findbugs.annotations.Nullable;

/**
 * @author Alexey Zhokhov
 */
public final class StringUtils {

    private StringUtils() {
    }

    public static boolean isEmpty(@Nullable CharSequence str) {
        return str == null || str.length() == 0;
    }

    public static boolean isNotEmpty(@Nullable CharSequence str) {
        return !isEmpty(str);
    }

    public static boolean hasText(@Nullable CharSequence str) {
        if (isEmpty(str)) {
            return false;
        }

        int strLen = str.length();
        for (int i = 0; i < strLen; i++) {
            if (!Character.isWhitespace(str.charAt(i))) {
                return true;
            }
        }
        return false;
    }

}