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TuGraph-DB-OGM is an Object Graph Mapping Library for TuGraph.

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/*
 * Copyright (c) 2002-2022 "Neo4j,"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * 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 com.antgroup.tugraph.ogm.utils;

/**
 * @author Michael J. Simons
 */
public final class StringUtils {

    /**
     * Verbatim copy of {@literal org.apache.commons.lang3.StringUtils#isBlank(java.lang.CharSequence)}.
     *
     * @param cs the CharSequence to check, may be null
     * @return {@code true} if the CharSequence is null, empty or whitespace only
     */
    @SuppressWarnings("InnerAssignment")
    public static boolean isBlank(final CharSequence cs) {
        int strLen;
        if (cs == null || (strLen = cs.length()) == 0) {
            return true;
        }
        for (int i = 0; i < strLen; i++) {
            if (!Character.isWhitespace(cs.charAt(i))) {
                return false;
            }
        }
        return true;
    }

    private StringUtils() {
    }
}